diff --git a/.azure-pipelines/ci.yml b/.azure-pipelines/ci.yml
index 6302b547982118..b5b2765e43844f 100644
--- a/.azure-pipelines/ci.yml
+++ b/.azure-pipelines/ci.yml
@@ -1,7 +1,4 @@
-variables:
-  coverage: false
-
-trigger: ['main', '3.11', '3.10', '3.9', '3.8', '3.7']
+trigger: ['main', '3.12', '3.11', '3.10', '3.9', '3.8', '3.7']
 
 jobs:
 - job: Prebuild
@@ -14,84 +11,6 @@ jobs:
   - template: ./prebuild-checks.yml
 
 
-- job: Docs_PR
-  displayName: Docs PR
-  dependsOn: Prebuild
-  condition: and(succeeded(), eq(dependencies.Prebuild.outputs['docs.run'], 'true'))
-
-  pool:
-    vmImage: ubuntu-22.04
-
-  steps:
-  - template: ./docs-steps.yml
-    parameters:
-      upload: true
-
-
-- job: macOS_CI_Tests
-  displayName: macOS CI Tests
-  dependsOn: Prebuild
-  #condition: and(succeeded(), eq(dependencies.Prebuild.outputs['tests.run'], 'true'))
-  # bpo-39837: macOS tests on Azure Pipelines are disabled
-  condition: false
-
-  variables:
-    testRunTitle: '$(build.sourceBranchName)-macos'
-    testRunPlatform: macos
-
-  pool:
-    vmImage: macos-10.15
-
-  steps:
-  - template: ./macos-steps.yml
-
-
-- job: Ubuntu_CI_Tests
-  displayName: Ubuntu CI Tests
-  dependsOn: Prebuild
-  condition: and(succeeded(), eq(dependencies.Prebuild.outputs['tests.run'], 'true'))
-
-  pool:
-    vmImage: ubuntu-22.04
-
-  variables:
-    testRunTitle: '$(build.sourceBranchName)-linux'
-    testRunPlatform: linux
-    openssl_version: 1.1.1t
-
-  steps:
-  - template: ./posix-steps.yml
-    parameters:
-      dependencies: apt
-
-
-- job: Ubuntu_Coverage_CI_Tests
-  displayName: Ubuntu CI Tests (coverage)
-  dependsOn: Prebuild
-  condition: |
-    and(
-        and(
-            succeeded(),
-            eq(variables['coverage'], 'true')
-        ),
-        eq(dependencies.Prebuild.outputs['tests.run'], 'true')
-    )
-
-  pool:
-    vmImage: ubuntu-22.04
-
-  variables:
-    testRunTitle: '$(Build.SourceBranchName)-linux-coverage'
-    testRunPlatform: linux-coverage
-    openssl_version: 1.1.1t
-
-  steps:
-  - template: ./posix-steps.yml
-    parameters:
-      dependencies: apt
-      coverage: true
-
-
 - job: Windows_CI_Tests
   displayName: Windows CI Tests
   dependsOn: Prebuild
diff --git a/.azure-pipelines/docs-steps.yml b/.azure-pipelines/docs-steps.yml
deleted file mode 100644
index 647daff7a033a8..00000000000000
--- a/.azure-pipelines/docs-steps.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-parameters:
-  latex: false
-  upload: false
-
-steps:
-- checkout: self
-  clean: true
-  fetchDepth: 5
-
-- task: UsePythonVersion@0
-  displayName: 'Use Python 3.6 or later'
-  inputs:
-    versionSpec: '>=3.6'
-
-- script: python -m pip install -r requirements.txt
-  workingDirectory: '$(build.sourcesDirectory)/Doc'
-  displayName: 'Install build dependencies'
-
-- ${{ if ne(parameters.latex, 'true') }}:
-  - script: make check html PYTHON=python
-    workingDirectory: '$(build.sourcesDirectory)/Doc'
-    displayName: 'Build documentation'
-
-- ${{ if eq(parameters.latex, 'true') }}:
-  - script: sudo apt-get update && sudo apt-get install -qy --force-yes texlive-full
-    displayName: 'Install LaTeX'
-
-  - script: make dist PYTHON=python SPHINXBUILD='python -m sphinx' BLURB='python -m blurb'
-    workingDirectory: '$(build.sourcesDirectory)/Doc'
-    displayName: 'Build documentation'
-
-- ${{ if eq(parameters.upload, 'true') }}:
-  - task: PublishBuildArtifacts@1
-    displayName: 'Publish docs'
-
-    inputs:
-      PathToPublish: '$(build.sourcesDirectory)/Doc/build'
-      ArtifactName: docs
-      publishLocation: Container
-
-  - ${{ if eq(parameters.latex, 'true') }}:
-    - task: PublishBuildArtifacts@1
-      displayName: 'Publish dist'
-      inputs:
-        PathToPublish: '$(build.sourcesDirectory)/Doc/dist'
-        ArtifactName: docs_dist
-        publishLocation: Container
diff --git a/.azure-pipelines/macos-steps.yml b/.azure-pipelines/macos-steps.yml
deleted file mode 100644
index fa38a0df8c87b8..00000000000000
--- a/.azure-pipelines/macos-steps.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-steps:
-- checkout: self
-  clean: true
-  fetchDepth: 5
-
-- script: ./configure --with-pydebug --with-openssl=/usr/local/opt/openssl --prefix=/opt/python-azdev
-  displayName: 'Configure CPython (debug)'
-
-- script: make -j4
-  displayName: 'Build CPython'
-
-- script: make pythoninfo
-  displayName: 'Display build info'
-
-- script: make buildbottest TESTOPTS="-j4 -uall,-cpu --junit-xml=$(build.binariesDirectory)/test-results.xml"
-  displayName: 'Tests'
-  continueOnError: true
-  timeoutInMinutes: 30
-
-- task: PublishTestResults@2
-  displayName: 'Publish Test Results'
-  inputs:
-    testResultsFiles: '$(build.binariesDirectory)/test-results.xml'
-    mergeTestResults: true
-    testRunTitle: $(testRunTitle)
-    platform: $(testRunPlatform)
-  condition: succeededOrFailed()
diff --git a/.azure-pipelines/posix-steps.yml b/.azure-pipelines/posix-steps.yml
index 9d7c5e1279f46d..e23c7b1dcb55c1 100644
--- a/.azure-pipelines/posix-steps.yml
+++ b/.azure-pipelines/posix-steps.yml
@@ -1,10 +1,3 @@
-parameters:
-  coverage: false
-  sudo_dependencies: sudo
-  dependencies: apt
-  patchcheck: true
-  xvfb: true
-
 steps:
 - checkout: self
   clean: true
@@ -14,7 +7,7 @@ steps:
 - script: sudo setfacl -Rb /home/vsts
   displayName: 'Workaround ACL issue'
 
-- script: ${{ parameters.sudo_dependencies }} ./.azure-pipelines/posix-deps-${{ parameters.dependencies }}.sh $(openssl_version)
+- script: sudo ./.azure-pipelines/posix-deps-apt.sh $(openssl_version)
   displayName: 'Install dependencies'
 
 - script: ./configure --with-pydebug
@@ -23,61 +16,11 @@ steps:
 - script: make -j4
   displayName: 'Build CPython'
 
-- ${{ if eq(parameters.coverage, 'true') }}:
-  - script: ./python -m venv venv && ./venv/bin/python -m pip install -U coverage
-    displayName: 'Set up virtual environment'
-
-  - script: ./venv/bin/python -m test.pythoninfo
-    displayName: 'Display build info'
-
-  - script: |
-      $COMMAND -m coverage run --pylib -m test \
-                --fail-env-changed \
-                -uall,-cpu \
-                --junit-xml=$(build.binariesDirectory)/test-results.xml \
-                -x test_multiprocessing_fork \
-                -x test_multiprocessing_forkserver \
-                -x test_multiprocessing_spawn \
-                -x test_concurrent_futures
-    displayName: 'Tests with coverage'
-    env:
-      ${{ if eq(parameters.xvfb, 'true') }}:
-        COMMAND: xvfb-run ./venv/bin/python
-      ${{ if ne(parameters.xvfb, 'true') }}:
-        COMMAND: ./venv/bin/python
-
-  - script: ./venv/bin/python -m coverage xml
-    displayName: 'Generate coverage.xml'
-
-  - script: source ./venv/bin/activate && bash <(curl -s https://codecov.io/bash) -y .github/codecov.yml
-    displayName: 'Publish code coverage results'
-
-
-- ${{ if ne(parameters.coverage, 'true') }}:
-  - script: make pythoninfo
-    displayName: 'Display build info'
-
-  - script: $COMMAND buildbottest TESTOPTS="-j4 -uall,-cpu --junit-xml=$(build.binariesDirectory)/test-results.xml"
-    displayName: 'Tests'
-    env:
-      ${{ if eq(parameters.xvfb, 'true') }}:
-        COMMAND: xvfb-run make
-      ${{ if ne(parameters.xvfb, 'true') }}:
-        COMMAND: make
-
-- ${{ if eq(parameters.patchcheck, 'true') }}:
-  - script: |
-      git fetch origin
-      ./python Tools/patchcheck/patchcheck.py --ci true
-    displayName: 'Run patchcheck.py'
-    condition: and(succeeded(), eq(variables['Build.Reason'], 'PullRequest'))
-
+- script: make pythoninfo
+  displayName: 'Display build info'
 
-- task: PublishTestResults@2
-  displayName: 'Publish Test Results'
-  inputs:
-    testResultsFiles: '$(build.binariesDirectory)/test-results.xml'
-    mergeTestResults: true
-    testRunTitle: $(testRunTitle)
-    platform: $(testRunPlatform)
-  condition: succeededOrFailed()
+- script: |
+    git fetch origin
+    ./python Tools/patchcheck/patchcheck.py --ci true
+  displayName: 'Run patchcheck.py'
+  condition: and(succeeded(), eq(variables['Build.Reason'], 'PullRequest'))
diff --git a/.azure-pipelines/pr.yml b/.azure-pipelines/pr.yml
index 5f7218768c18af..335a4b407cb83c 100644
--- a/.azure-pipelines/pr.yml
+++ b/.azure-pipelines/pr.yml
@@ -1,7 +1,4 @@
-variables:
-  coverage: false
-
-pr: ['main', '3.11', '3.10', '3.9', '3.8', '3.7']
+pr: ['main', '3.12', '3.11', '3.10', '3.9', '3.8', '3.7']
 
 jobs:
 - job: Prebuild
@@ -14,40 +11,8 @@ jobs:
   - template: ./prebuild-checks.yml
 
 
-- job: Docs_PR
-  displayName: Docs PR
-  dependsOn: Prebuild
-  condition: and(succeeded(), eq(dependencies.Prebuild.outputs['docs.run'], 'true'))
-
-  pool:
-    vmImage: ubuntu-22.04
-
-  steps:
-  - template: ./docs-steps.yml
-
-
-- job: macOS_PR_Tests
-  displayName: macOS PR Tests
-  dependsOn: Prebuild
-  #condition: and(succeeded(), eq(dependencies.Prebuild.outputs['tests.run'], 'true'))
-  # bpo-39837: macOS tests on Azure Pipelines are disabled
-  condition: false
-
-  variables:
-    testRunTitle: '$(system.pullRequest.TargetBranch)-macos'
-    testRunPlatform: macos
-
-  pool:
-    vmImage: macos-10.15
-
-  steps:
-  - template: ./macos-steps.yml
-    parameters:
-      targetBranch: $(System.PullRequest.TargetBranch)
-
-
-- job: Ubuntu_PR_Tests
-  displayName: Ubuntu PR Tests
+- job: Ubuntu_Patchcheck
+  displayName: Ubuntu patchcheck
   dependsOn: Prebuild
   condition: and(succeeded(), eq(dependencies.Prebuild.outputs['tests.run'], 'true'))
 
@@ -57,67 +22,7 @@ jobs:
   variables:
     testRunTitle: '$(system.pullRequest.TargetBranch)-linux'
     testRunPlatform: linux
-    openssl_version: 1.1.1t
-
-  steps:
-  - template: ./posix-steps.yml
-    parameters:
-      dependencies: apt
-
-
-- job: Ubuntu_Coverage_PR_Tests
-  displayName: Ubuntu PR Tests (coverage)
-  dependsOn: Prebuild
-  condition: |
-    and(
-        and(
-            succeeded(),
-            eq(variables['coverage'], 'true')
-        ),
-        eq(dependencies.Prebuild.outputs['tests.run'], 'true')
-    )
-
-  pool:
-    vmImage: ubuntu-22.04
-
-  variables:
-    testRunTitle: '$(Build.SourceBranchName)-linux-coverage'
-    testRunPlatform: linux-coverage
-    openssl_version: 1.1.1t
+    openssl_version: 1.1.1u
 
   steps:
   - template: ./posix-steps.yml
-    parameters:
-      dependencies: apt
-      coverage: true
-
-
-- job: Windows_PR_Tests
-  displayName: Windows PR Tests
-  dependsOn: Prebuild
-  condition: and(succeeded(), eq(dependencies.Prebuild.outputs['tests.run'], 'true'))
-
-  pool:
-    vmImage: windows-2022
-
-  strategy:
-    matrix:
-      win32:
-        arch: win32
-        buildOpt: '-p Win32'
-        testRunTitle: '$(System.PullRequest.TargetBranch)-win32'
-        testRunPlatform: win32
-      win64:
-        arch: amd64
-        buildOpt: '-p x64'
-        testRunTitle: '$(System.PullRequest.TargetBranch)-win64'
-        testRunPlatform: win64
-      winarm64:
-        arch: arm64
-        buildOpt: '-p arm64'
-    maxParallel: 4
-
-  steps:
-  - template: ./windows-steps.yml
-    parameters:
-      targetBranch: $(System.PullRequest.TargetBranch)
diff --git a/.azure-pipelines/prebuild-checks.yml b/.azure-pipelines/prebuild-checks.yml
index 30ff642d1267a1..2c6460d2386735 100644
--- a/.azure-pipelines/prebuild-checks.yml
+++ b/.azure-pipelines/prebuild-checks.yml
@@ -11,18 +11,6 @@ steps:
   displayName: Fetch comparison tree
   condition: and(succeeded(), variables['System.PullRequest.TargetBranch'])
 
-- script: |
-   if ! git diff --name-only $(diffTarget) | grep -qE '(\.rst$|^Doc|^Misc)'
-   then
-     echo "No docs were updated: docs.run=false"
-     echo "##vso[task.setvariable variable=run;isOutput=true]false"
-   else
-     echo "Docs were updated: docs.run=true"
-     echo "##vso[task.setvariable variable=run;isOutput=true]true"
-   fi
-  displayName: Detect documentation changes
-  name: docs
-
 - script: |
    if ! git diff --name-only $(diffTarget) | grep -qvE '(\.rst$|^Doc|^Misc)'
    then
diff --git a/.cirrus-DISABLED.yml b/.cirrus-DISABLED.yml
new file mode 100644
index 00000000000000..f20835cb6cac2a
--- /dev/null
+++ b/.cirrus-DISABLED.yml
@@ -0,0 +1,29 @@
+# gh-91960: Job disabled since Python is out of free credit (September 2023):
+# https://discuss.python.org/t/freebsd-gets-a-new-cirrus-ci-github-action-job-and-a-new-buildbot/33122/26
+
+freebsd_task:
+  freebsd_instance:
+    matrix:
+    - image: freebsd-13-2-release-amd64
+  # Turn off TCP and UDP blackhole.  It is not enabled by default in FreeBSD,
+  # but it is in the FreeBSD GCE images as used by Cirrus-CI.  It causes even
+  # local local connections to fail with ETIMEDOUT instead of ECONNREFUSED.
+  # For more information see https://reviews.freebsd.org/D41751 and
+  # https://github.com/cirruslabs/cirrus-ci-docs/issues/483.
+  sysctl_script:
+    - sysctl net.inet.tcp.blackhole=0
+    - sysctl net.inet.udp.blackhole=0
+  configure_script:
+    - mkdir build
+    - cd build
+    - ../configure --with-pydebug
+  build_script:
+    - cd build
+    - make -j$(sysctl -n hw.ncpu)
+  pythoninfo_script:
+    - cd build
+    - make pythoninfo
+  test_script:
+    - cd build
+    # dtrace fails to build on FreeBSD - see gh-73263
+    - make buildbottest TESTOPTS="-j0 -x test_dtrace --timeout=600"
diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 00000000000000..b5d94317e8aa8b
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,24 @@
+[run]
+branch = True
+
+[report]
+# Regexes for lines to exclude from consideration
+exclude_lines =
+    # Don't complain if non-runnable code isn't run:
+    if 0:
+    if __name__ == .__main__.:
+    raise AssertionError\(
+
+    # Empty bodies in protocols or abstract methods
+    ^\s*def [a-zA-Z0-9_]+\(.*\)(\s*->.*)?:\s*\.\.\.(\s*#.*)?$
+    ^\s*\.\.\.(\s*#.*)?$
+
+    .*# pragma: no cover
+    .*# pragma: no branch
+
+    # Additions for IDLE:
+    .*# htest #
+    if not (_htest or _utest):
+    if not .*_utest:
+    if .*_htest:
+    
diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index efbdcd402cdf67..9f808af38e69df 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -2,11 +2,11 @@ FROM docker.io/library/fedora:37
 
 ENV CC=clang
 
-ENV WASI_SDK_VERSION=19
+ENV WASI_SDK_VERSION=20
 ENV WASI_SDK_PATH=/opt/wasi-sdk
 
 ENV WASMTIME_HOME=/opt/wasmtime
-ENV WASMTIME_VERSION=7.0.0
+ENV WASMTIME_VERSION=14.0.4
 ENV WASMTIME_CPU_ARCH=x86_64
 
 RUN dnf -y --nodocs --setopt=install_weak_deps=False install /usr/bin/{blurb,clang,curl,git,ln,tar,xz} 'dnf-command(builddep)' && \
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 9fbaf7fddd8514..0dc303015df5c7 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -9,7 +9,9 @@
         "-y",
         "which",
         "zsh",
-        "fish"
+        "fish",
+        // For umask fix below.
+        "/usr/bin/setfacl"
     ],
     "updateContentCommand": {
         // Using the shell for `nproc` usage.
@@ -22,6 +24,11 @@
             "html"
         ]
     },
+    "postCreateCommand": {
+        // https://github.com/orgs/community/discussions/26026
+        "umask fix: workspace": ["sudo", "setfacl", "-bnR", "."],
+        "umask fix: /tmp": ["sudo", "setfacl", "-bnR", "/tmp"]
+    },
     "customizations": {
         "vscode": {
             "extensions": [
@@ -31,10 +38,10 @@
                 "maelvalais.autoconf",
                 // C auto-complete.
                 "ms-vscode.cpptools",
-                // To view built docs.
-                "ms-vscode.live-server"
-                // https://github.com/microsoft/vscode-python/issues/18073
-                // "ms-python.python"
+                // To view HTML build of docs.
+                "ms-vscode.live-server",
+                // Python auto-complete.
+                "ms-python.python"
             ],
             "settings": {
                 "C_Cpp.default.compilerPath": "/usr/bin/clang",
diff --git a/.editorconfig b/.editorconfig
index 81445d2d79c739..0169eed951cd3f 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -8,5 +8,8 @@ indent_style = space
 [*.{py,c,cpp,h}]
 indent_size = 4
 
+[*.rst]
+indent_size = 3
+
 [*.yml]
 indent_size = 2
diff --git a/.gitattributes b/.gitattributes
index 4ed95069442f3d..acfd62411542f1 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -18,14 +18,13 @@
 *.zip binary
 
 # Specific binary files
-Lib/test/sndhdrdata/sndhdr.* binary
 PC/classicAppCompat.* binary
 
 # Text files that should not be subject to eol conversion
 [attr]noeol -text
 
 Lib/test/cjkencodings/*                    noeol
-Lib/test/coding20731.py                    noeol
+Lib/test/tokenizedata/coding20731.py       noeol
 Lib/test/decimaltestdata/*.decTest         noeol
 Lib/test/test_email/data/*.txt             noeol
 Lib/test/test_importlib/resources/data01/*           noeol
@@ -67,26 +66,34 @@ PCbuild/readme.txt  dos
 [attr]generated linguist-generated=true diff=generated
 
 **/clinic/*.c.h                                     generated
+**/clinic/*.cpp.h                                   generated
+**/clinic/*.h.h                                     generated
 *_db.h                                              generated
 Doc/data/stable_abi.dat                             generated
 Doc/library/token-list.inc                          generated
 Include/internal/pycore_ast.h                       generated
 Include/internal/pycore_ast_state.h                 generated
 Include/internal/pycore_opcode.h                    generated
+Include/internal/pycore_opcode_metadata.h           generated
 Include/internal/pycore_*_generated.h               generated
 Include/opcode.h                                    generated
+Include/opcode_ids.h                                generated
 Include/token.h                                     generated
+Lib/_opcode_metadata.py                             generated
 Lib/keyword.py                                      generated
 Lib/test/levenshtein_examples.json                  generated
 Lib/test/test_stable_abi_ctypes.py                  generated
 Lib/token.py                                        generated
+Misc/sbom.spdx.json                                 generated
 Objects/typeslots.inc                               generated
 PC/python3dll.c                                     generated
 Parser/parser.c                                     generated
 Parser/token.c                                      generated
 Programs/test_frozenmain.h                          generated
 Python/Python-ast.c                                 generated
+Python/executor_cases.c.h                           generated
 Python/generated_cases.c.h                          generated
+Python/abstract_interp_cases.c.h                    generated
 Python/opcode_targets.h                             generated
 Python/stdlib_module_names.h                        generated
 Tools/peg_generator/pegen/grammar_parser.py         generated
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index d40519e40d3cc2..aa6d937d9cbc31 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -9,6 +9,7 @@
 
 # pre-commit
 .pre-commit-config.yaml       @hugovk @AlexWaygood
+.ruff.toml                    @hugovk @AlexWaygood
 
 # Build system
 configure*                    @erlend-aasland @corona10
@@ -22,17 +23,23 @@ configure*                    @erlend-aasland @corona10
 **/*hamt*                     @1st1
 Objects/set*                  @rhettinger
 Objects/dict*                 @methane @markshannon
+Objects/typevarobject.c       @JelleZijlstra
 Objects/type*                 @markshannon
 Objects/codeobject.c          @markshannon
 Objects/frameobject.c         @markshannon
 Objects/call.c                @markshannon
-Python/ceval.c                @markshannon
+Python/ceval*.c               @markshannon @gvanrossum
+Python/ceval*.h               @markshannon @gvanrossum
 Python/compile.c              @markshannon @iritkatriel
 Python/assemble.c             @markshannon @iritkatriel
 Python/flowgraph.c            @markshannon @iritkatriel
 Python/ast_opt.c              @isidentical
+Python/bytecodes.c            @markshannon @gvanrossum
+Python/optimizer*.c           @markshannon @gvanrossum
 Lib/test/test_patma.py        @brandtbucher
 Lib/test/test_peepholer.py    @brandtbucher
+Lib/test/test_type_*.py       @JelleZijlstra
+Lib/test/test_capi/test_misc.py  @markshannon @gvanrossum
 
 # Exceptions
 Lib/traceback.py              @iritkatriel
@@ -66,7 +73,8 @@ Python/traceback.c            @iritkatriel
 /Tools/build/parse_html5_entities.py   @ezio-melotti
 
 # Import (including importlib).
-**/*import*                   @brettcannon @encukou @ericsnowcurrently @ncoghlan @warsaw
+**/*import*                   @brettcannon @ericsnowcurrently @ncoghlan @warsaw
+/Python/import.c              @kumaraditya303
 **/*importlib/resources/*      @jaraco @warsaw @FFY00
 **/importlib/metadata/*       @jaraco @warsaw
 
@@ -77,7 +85,7 @@ Doc/library/time.rst          @pganssle @abalkin
 Lib/test/test_time.py         @pganssle @abalkin
 Modules/timemodule.c          @pganssle @abalkin
 Python/pytime.c               @pganssle @abalkin
-Include/pytime.h              @pganssle @abalkin
+Include/internal/pycore_time.h  @pganssle @abalkin
 
 # Email and related
 **/*mail*                     @python/email-team
@@ -95,6 +103,11 @@ Include/pytime.h              @pganssle @abalkin
 /Tools/peg_generator/         @pablogsal @lysnikolaou
 /Lib/test/test_peg_generator/ @pablogsal @lysnikolaou
 /Grammar/python.gram          @pablogsal @lysnikolaou
+/Lib/tokenize.py              @pablogsal @lysnikolaou
+/Lib/test/test_tokenize.py    @pablogsal @lysnikolaou
+
+# Code generator
+/Tools/cases_generator/        @gvanrossum
 
 # AST
 Python/ast.c                  @isidentical
@@ -114,6 +127,12 @@ Lib/ast.py                    @isidentical
 /Lib/test/test_subprocess.py  @gpshead
 /Modules/*subprocess*         @gpshead
 
+# Limited C API & stable ABI
+Tools/build/stable_abi.py     @encukou
+Misc/stable_abi.toml          @encukou
+Doc/data/*.abi                @encukou
+Doc/c-api/stable.rst          @encukou
+
 # Windows
 /PC/                          @python/windows-team
 /PCbuild/                     @python/windows-team
@@ -139,7 +158,7 @@ Lib/ast.py                    @isidentical
 
 **/*idlelib*                  @terryjreedy
 
-**/*typing*                   @gvanrossum @Fidget-Spinner @JelleZijlstra @AlexWaygood
+**/*typing*                   @JelleZijlstra @AlexWaygood
 
 **/*ftplib                    @giampaolo
 **/*shutil                    @giampaolo
@@ -162,4 +181,16 @@ Lib/ast.py                    @isidentical
 **/*pathlib*                  @barneygale
 
 # zipfile.Path
-**/*zipfile/*_path.py         @jaraco
+**/*zipfile/_path/*           @jaraco
+
+# Argument Clinic
+/Tools/clinic/**              @erlend-aasland @AlexWaygood
+/Lib/test/test_clinic.py      @erlend-aasland @AlexWaygood
+Doc/howto/clinic.rst          @erlend-aasland
+
+# WebAssembly
+/Tools/wasm/                  @brettcannon
+
+# SBOM
+/Misc/sbom.spdx.json          @sethmlarson
+/Tools/build/generate_sbom.py @sethmlarson
diff --git a/.github/ISSUE_TEMPLATE/bug.md b/.github/ISSUE_TEMPLATE/bug.md
deleted file mode 100644
index 1d93e0735e50f3..00000000000000
--- a/.github/ISSUE_TEMPLATE/bug.md
+++ /dev/null
@@ -1,32 +0,0 @@
----
-name: Bug report
-about: Submit a bug report
-labels: "type-bug"
----
-
-<!--
-  If you're new to Python and you're not sure whether what you're experiencing is a bug, the CPython issue tracker is not
-  the right place to seek help. Consider the following options instead:
-
-  - reading the Python tutorial: https://docs.python.org/3/tutorial/
-  - posting in the "Users" category on discuss.python.org: https://discuss.python.org/c/users/7
-  - emailing the Python-list mailing list: https://mail.python.org/mailman/listinfo/python-list
-  - searching our issue tracker (https://github.com/python/cpython/issues) to see if
-    your problem has already been reported
--->
-
-# Bug report
-
-A clear and concise description of what the bug is.
-Include a minimal, reproducible example (https://stackoverflow.com/help/minimal-reproducible-example), if possible.
-
-# Your environment
-
-<!-- Include as many relevant details as possible about the environment you experienced the bug in -->
-
-- CPython versions tested on:
-- Operating system and architecture:
-
-<!--
-You can freely edit this text. Remove any lines you believe are unnecessary.
--->
diff --git a/.github/ISSUE_TEMPLATE/bug.yml b/.github/ISSUE_TEMPLATE/bug.yml
new file mode 100644
index 00000000000000..395516f29b037c
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/bug.yml
@@ -0,0 +1,56 @@
+name: Bug report
+description: Submit a bug report
+labels: ["type-bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **New to Python?**
+
+        For help or advice on using Python, try one of the following options instead of opening a GitHub issue:
+
+          - Asking on [Discourse](https://discuss.python.org/c/users/7) or [Stack Overflow](https://stackoverflow.com)
+          - Reading the [Python tutorial](https://docs.python.org/3/tutorial/)
+          - Emailing [python-list](https://mail.python.org/mailman/listinfo/python-list)
+
+        Make sure to also search the [CPython issue tracker](https://github.com/python/cpython/issues?q=is%3Aissue+sort%3Acreated-desc) to check that the bug has not already been reported.
+  - type: textarea
+    attributes:
+      label: "Bug description:"
+      description: >
+        Give a clear and concise description of what happened.
+        Include a [minimal, reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) if possible.
+        [Copy and paste code where possible rather than using screenshots](https://meta.stackoverflow.com/a/285557/13990016),
+        and put any code blocks inside triple backticks.
+
+      value: |
+        ```python
+        # Add a code block here, if required
+        ```
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "CPython versions tested on:"
+      multiple: true
+      options:
+        - "3.8"
+        - "3.9"
+        - "3.10"
+        - "3.11"
+        - "3.12"
+        - "3.13"
+        - "CPython main branch"
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "Operating systems tested on:"
+      multiple: true
+      options:
+        - Linux
+        - macOS
+        - Windows
+        - Other
+    validations:
+      required: false
diff --git a/.github/ISSUE_TEMPLATE/crash.md b/.github/ISSUE_TEMPLATE/crash.md
deleted file mode 100644
index dad3423db03410..00000000000000
--- a/.github/ISSUE_TEMPLATE/crash.md
+++ /dev/null
@@ -1,33 +0,0 @@
----
-name: Crash report
-about: A hard crash of the interpreter, possibly with a core dump
-labels: "type-crash"
----
-
-<!--
-  Use this template for hard crashes of the interpreter, segmentation faults, failed C-level assertions, and similar.
-  Do not submit this form if you encounter an exception being unexpectedly raised from a Python function.
-  Most of the time, these should be filed as bugs, rather than crashes.
-
-  The CPython interpreter is itself written in a different programming language, C.
-  For CPython, a "crash" is when Python itself fails, leading to a traceback in the C stack.
--->
-
-# Crash report
-
-Tell us what happened, ideally including a minimal, reproducible example (https://stackoverflow.com/help/minimal-reproducible-example).
-
-# Error messages
-
-Enter any relevant error message caused by the crash, including a core dump if there is one.
-
-# Your environment
-
-<!-- Include as many relevant details as possible about the environment you experienced the bug in -->
-
-- CPython versions tested on:
-- Operating system and architecture:
-
-<!--
-You can freely edit this text. Remove any lines you believe are unnecessary.
--->
diff --git a/.github/ISSUE_TEMPLATE/crash.yml b/.github/ISSUE_TEMPLATE/crash.yml
new file mode 100644
index 00000000000000..c14d7cf2599d4c
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/crash.yml
@@ -0,0 +1,54 @@
+name: Crash report
+description: A hard crash of the interpreter, possibly with a core dump
+labels: ["type-crash"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+          This form is for hard crashes of the Python interpreter, segmentation faults, failed C-level assertions, and similar. Unexpected exceptions raised from Python functions in the standard library count as bugs rather than crashes.
+
+          The CPython interpreter is written in a different programming language, C. A "CPython crash" is when Python itself fails, leading to a traceback in the C stack.
+  - type: textarea
+    attributes:
+      label: What happened?
+      description: >
+        Include a [minimal, reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) if possible.
+        [Copy and paste code where possible rather than using screenshots](https://meta.stackoverflow.com/a/285557/13990016),
+        and put any code blocks inside triple backticks.
+
+      value: |
+        ```python
+        # Add a code block here, if required
+        ```
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "CPython versions tested on:"
+      multiple: true
+      options:
+        - "3.8"
+        - "3.9"
+        - "3.10"
+        - "3.11"
+        - "3.12"
+        - "CPython main branch"
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "Operating systems tested on:"
+      multiple: true
+      options:
+        - Linux
+        - macOS
+        - Windows
+        - Other
+    validations:
+      required: false
+  - type: input
+    attributes:
+      label: "Output from running 'python -VV' on the command line:"
+      description: If you tested with multiple operating systems or architectures, feel free to provide details in the main bug description.
+    validations:
+      required: false
diff --git a/.github/ISSUE_TEMPLATE/feature.md b/.github/ISSUE_TEMPLATE/feature.md
deleted file mode 100644
index ed051e945f8120..00000000000000
--- a/.github/ISSUE_TEMPLATE/feature.md
+++ /dev/null
@@ -1,28 +0,0 @@
----
-name: Feature or enhancement
-about: Submit a proposal for a new CPython feature or enhancement
-labels: "type-feature"
----
-
-# Feature or enhancement
-
-(A clear and concise description of your proposal.)
-
-# Pitch
-
-(Explain why this feature or enhancement should be implemented and how it would be used.
- Add examples, if applicable.)
-
-# Previous discussion
-
-<!--
-  New features to Python should first be discussed elsewhere before creating issues on GitHub,
-  for example in the "ideas" category (https://discuss.python.org/c/ideas/6) of discuss.python.org,
-  or the python-ideas mailing list (https://mail.python.org/mailman3/lists/python-ideas.python.org/).
-  Use this space to post links to the places where you have already discussed this feature proposal:
--->
-
-
-<!--
-You can freely edit this text. Remove any lines you believe are unnecessary.
--->
diff --git a/.github/ISSUE_TEMPLATE/feature.yml b/.github/ISSUE_TEMPLATE/feature.yml
new file mode 100644
index 00000000000000..4361ab2bf827fb
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/feature.yml
@@ -0,0 +1,40 @@
+name: Feature or enhancement
+description: Submit a proposal for a new CPython feature or enhancement
+labels: ["type-feature"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        # Proposing a feature to CPython?
+
+        You'll need to demonstrate widespread support for your idea among the community.
+
+        Major feature proposals should generally be discussed on [Discourse](https://discuss.python.org/c/ideas/6) before opening a GitHub issue. Wait until it's clear that most people support your idea before filling in this form.
+  - type: textarea
+    attributes:
+      label: "Proposal:"
+      description: >
+        Explain your proposal, why it should be implemented, and how it would be used.
+        Add examples, if applicable.
+        Put any code blocks inside triple backticks.
+      value: |
+        ```python
+        # Add a code block here, if required
+        ```
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: Has this already been discussed elsewhere?
+      options:
+        - No response given
+        - I have already discussed this feature proposal on Discourse
+        - This is a minor feature, which does not need previous discussion elsewhere
+      multiple: false
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Links to previous discussion of this feature:"
+    validations:
+      required: false
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index f026b0f5f9454a..c8a3165d690364 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -13,7 +13,7 @@ updates:
           - "version-update:semver-minor"
           - "version-update:semver-patch"
   - package-ecosystem: "pip"
-    directory: "/Tools/clinic/"
+    directory: "/Tools/"
     schedule:
       interval: "monthly"
     labels:
diff --git a/.github/problem-matchers/sphinx.json b/.github/problem-matchers/sphinx.json
deleted file mode 100644
index 09848608a7b034..00000000000000
--- a/.github/problem-matchers/sphinx.json
+++ /dev/null
@@ -1,40 +0,0 @@
-{
-    "problemMatcher": [
-        {
-            "owner": "sphinx-problem-matcher",
-            "pattern": [
-                {
-                    "regexp": "^(.*):(\\d+):\\s+(\\w*):\\s+(.*)$",
-                    "file": 1,
-                    "line": 2,
-                    "severity": 3,
-                    "message": 4
-                }
-            ]
-        },
-        {
-            "owner": "sphinx-problem-matcher-loose",
-            "pattern": [
-                {
-                    "_comment": "A bit of a looser pattern, doesn't look for line numbers, just looks for file names relying on them to start with / and end with .rst",
-                    "regexp": "(\/.*\\.rst):\\s+(\\w*):\\s+(.*)$",
-                    "file": 1,
-                    "severity": 2,
-                    "message": 3
-                }
-            ]
-        },
-        {
-            "owner": "sphinx-problem-matcher-loose-no-severity",
-            "pattern": [
-                {
-                    "_comment": "Looks for file names ending with .rst and line numbers but without severity",
-                    "regexp": "^(.*\\.rst):(\\d+):(.*)$",
-                    "file": 1,
-                    "line": 2,
-                    "message": 3
-                }
-            ]
-        }
-    ]
-}
\ No newline at end of file
diff --git a/.github/workflows/add-issue-header.yml b/.github/workflows/add-issue-header.yml
new file mode 100644
index 00000000000000..570b8779994a0f
--- /dev/null
+++ b/.github/workflows/add-issue-header.yml
@@ -0,0 +1,53 @@
+name: Add issue header
+# Automatically edits an issue's descriptions with a header,
+# one of:
+#
+# - Bug report
+# - Crash report
+# - Feature or enhancement
+
+on:
+  issues:
+    types:
+      # Only ever run once
+      - opened
+
+
+jobs:
+  add-header:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          # language=JavaScript
+          script: |
+            // https://devguide.python.org/triage/labels/#type-labels
+            const HEADERS = new Map([
+              ['type-bug', 'Bug report'],
+              ['type-crash', 'Crash report'],
+              ['type-feature', 'Feature or enhancement'],
+            ]);
+            let issue_data = await github.rest.issues.get({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo
+            }).then(issue => issue.data);
+            let header = '';
+            for (const label_data of issue_data.labels) {
+                const label_name = (typeof label_data === 'string') ? label_data : label_data.name;
+                if (HEADERS.has(label_name)) {
+                    header = HEADERS.get(label_name);
+                    break;
+                }
+            }
+            if (header !== '') {
+              console.log(`Setting new header: ${header}`);
+              await github.rest.issues.update({
+                  issue_number: context.issue.number,
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  body: `# ${header}\n\n${issue_data.body.replaceAll('\r', '')}`
+              });
+            }
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 69b78e5567adb1..cfb36c8c32e18d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,25 +8,25 @@ on:
   push:
     branches:
     - 'main'
+    - '3.12'
     - '3.11'
     - '3.10'
     - '3.9'
     - '3.8'
-    - '3.7'
   pull_request:
     branches:
     - 'main'
+    - '3.12'
     - '3.11'
     - '3.10'
     - '3.9'
     - '3.8'
-    - '3.7'
 
 permissions:
   contents: read
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}-reusable
   cancel-in-progress: true
 
 jobs:
@@ -35,10 +35,13 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     outputs:
+      run-docs: ${{ steps.docs-changes.outputs.run-docs || false }}
       run_tests: ${{ steps.check.outputs.run_tests }}
       run_hypothesis: ${{ steps.check.outputs.run_hypothesis }}
+      run_cifuzz: ${{ steps.check.outputs.run_cifuzz }}
+      config_hash: ${{ steps.config_hash.outputs.hash }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Check for source changes
         id: check
         run: |
@@ -59,7 +62,7 @@ jobs:
             # into the PR branch anyway.
             #
             # https://github.com/python/core-workflow/issues/373
-            git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qvE '(\.rst$|^Doc|^Misc)' && echo "run_tests=true" >> $GITHUB_OUTPUT || true
+            git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qvE '(\.rst$|^Doc|^Misc|^\.pre-commit-config\.yaml$|\.ruff\.toml$)' && echo "run_tests=true" >> $GITHUB_OUTPUT || true
           fi
 
           # Check if we should run hypothesis tests
@@ -73,38 +76,87 @@ jobs:
             echo "run_hypothesis=true" >> $GITHUB_OUTPUT
           fi
 
+          # oss-fuzz maintains a configuration for fuzzing the main branch of
+          # CPython, so CIFuzz should be run only for code that is likely to be
+          # merged into the main branch; compatibility with older branches may
+          # be broken.
+          FUZZ_RELEVANT_FILES='(\.c$|\.h$|\.cpp$|^configure$|^\.github/workflows/build\.yml$|^Modules/_xxtestfuzz)'
+          if [ "$GITHUB_BASE_REF" = "main" ] && [ "$(git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qE $FUZZ_RELEVANT_FILES; echo $?)" -eq 0 ]; then
+            # The tests are pretty slow so they are executed only for PRs
+            # changing relevant files.
+            echo "Run CIFuzz tests"
+            echo "run_cifuzz=true" >> $GITHUB_OUTPUT
+          else
+            echo "Branch too old for CIFuzz tests; or no C files were changed"
+            echo "run_cifuzz=false" >> $GITHUB_OUTPUT
+          fi
+      - name: Compute hash for config cache key
+        id: config_hash
+        run: |
+          echo "hash=${{ hashFiles('configure', 'configure.ac', '.github/workflows/build.yml') }}" >> $GITHUB_OUTPUT
+      - name: Get a list of the changed documentation-related files
+        if: github.event_name == 'pull_request'
+        id: changed-docs-files
+        uses: Ana06/get-changed-files@v2.2.0
+        with:
+          filter: |
+            Doc/**
+            Misc/**
+            .github/workflows/reusable-docs.yml
+          format: csv  # works for paths with spaces
+      - name: Check for docs changes
+        if: >-
+          github.event_name == 'pull_request'
+          && steps.changed-docs-files.outputs.added_modified_renamed != ''
+        id: docs-changes
+        run: |
+          echo "run-docs=true" >> "${GITHUB_OUTPUT}"
+
+  check-docs:
+    name: Docs
+    needs: check_source
+    if: fromJSON(needs.check_source.outputs.run-docs)
+    uses: ./.github/workflows/reusable-docs.yml
+
   check_generated_files:
     name: 'Check if generated files are up to date'
-    runs-on: ubuntu-latest
+    # Don't use ubuntu-latest but a specific version to make the job
+    # reproducible: to get the same tools versions (autoconf, aclocal, ...)
+    runs-on: ubuntu-22.04
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
+      - name: Restore config.cache
+        uses: actions/cache@v3
+        with:
+          path: config.cache
+          key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}-${{ env.pythonLocation }}
       - name: Install Dependencies
         run: sudo ./.github/workflows/posix-deps-apt.sh
       - name: Add ccache to PATH
         run: echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
       - name: Configure ccache action
         uses: hendrikmuhs/ccache-action@v1.2
-      - name: Check Autoconf version 2.69 and aclocal 1.16.3
+      - name: Check Autoconf and aclocal versions
         run: |
-          grep "Generated by GNU Autoconf 2.69" configure
-          grep "aclocal 1.16.3" aclocal.m4
+          grep "Generated by GNU Autoconf 2.71" configure
+          grep "aclocal 1.16.5" aclocal.m4
           grep -q "runstatedir" configure
           grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
       - name: Configure CPython
         run: |
           # Build Python with the libpython dynamic library
-          ./configure --with-pydebug --enable-shared
-      - name: Regenerate autoconf files with container image
-        run: make regen-configure
+          ./configure --config-cache --with-pydebug --enable-shared
+      - name: Regenerate autoconf files
+        # Same command used by Tools/build/regen-configure.sh ($AUTORECONF)
+        run: autoreconf -ivf -Werror
       - name: Build CPython
         run: |
-          # Deepfreeze will usually cause global objects to be added or removed,
-          # so we run it before regen-global-objects gets rum (in regen-all).
-          make regen-deepfreeze
           make -j4 regen-all
           make regen-stdlib-module-names
       - name: Check for changes
@@ -129,130 +181,63 @@ jobs:
         if: github.event_name == 'pull_request'  # $GITHUB_EVENT_NAME
         run: make check-c-globals
 
-  build_win32:
-    name: 'Windows (x86)'
-    runs-on: windows-latest
-    timeout-minutes: 60
+  build_windows:
+    name: 'Windows'
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
-    env:
-       IncludeUwp: 'true'
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build CPython
-      run: .\PCbuild\build.bat -e -d -p Win32
-    - name: Display build info
-      run: .\python.bat -m test.pythoninfo
-    - name: Tests
-      run: .\PCbuild\rt.bat -p Win32 -d -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0
+    uses: ./.github/workflows/reusable-windows.yml
 
-  build_win_amd64:
-    name: 'Windows (x64)'
-    runs-on: windows-latest
-    timeout-minutes: 60
+  build_windows_free_threaded:
+    name: 'Windows (free-threaded)'
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
-    env:
-       IncludeUwp: 'true'
-    steps:
-    - uses: actions/checkout@v3
-    - name: Register MSVC problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/msvc.json"
-    - name: Build CPython
-      run: .\PCbuild\build.bat -e -d -p x64
-    - name: Display build info
-      run: .\python.bat -m test.pythoninfo
-    - name: Tests
-      run: .\PCbuild\rt.bat -p x64 -d -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0
+    uses: ./.github/workflows/reusable-windows.yml
+    with:
+      free-threaded: true
 
   build_macos:
     name: 'macOS'
-    runs-on: macos-latest
-    timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
-    env:
-      HOMEBREW_NO_ANALYTICS: 1
-      HOMEBREW_NO_AUTO_UPDATE: 1
-      HOMEBREW_NO_INSTALL_CLEANUP: 1
-      PYTHONSTRICTEXTENSIONBUILD: 1
-    steps:
-    - uses: actions/checkout@v3
-    - name: Install Homebrew dependencies
-      run: brew install pkg-config openssl@1.1 xz gdbm tcl-tk
-    - name: Configure CPython
-      run: |
-        CFLAGS="-I$(brew --prefix gdbm)/include -I$(brew --prefix xz)/include" \
-        LDFLAGS="-L$(brew --prefix gdbm)/lib -I$(brew --prefix xz)/lib" \
-        PKG_CONFIG_PATH="$(brew --prefix tcl-tk)/lib/pkgconfig" \
-        ./configure \
-          --with-pydebug \
-          --prefix=/opt/python-dev \
-          --with-openssl="$(brew --prefix openssl@1.1)"
-    - name: Build CPython
-      run: make -j4
-    - name: Display build info
-      run: make pythoninfo
-    - name: Tests
-      run: make buildbottest TESTOPTS="-j4 -uall,-cpu"
+    uses: ./.github/workflows/reusable-macos.yml
+    with:
+      config_hash: ${{ needs.check_source.outputs.config_hash }}
+
+  build_macos_free_threaded:
+    name: 'macOS (free-threaded)'
+    needs: check_source
+    if: needs.check_source.outputs.run_tests == 'true'
+    uses: ./.github/workflows/reusable-macos.yml
+    with:
+      config_hash: ${{ needs.check_source.outputs.config_hash }}
+      free-threaded: true
 
   build_ubuntu:
     name: 'Ubuntu'
-    runs-on: ubuntu-20.04
-    timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
-    env:
-      OPENSSL_VER: 1.1.1t
-      PYTHONSTRICTEXTENSIONBUILD: 1
-    steps:
-    - uses: actions/checkout@v3
-    - name: Register gcc problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
-    - name: Install Dependencies
-      run: sudo ./.github/workflows/posix-deps-apt.sh
-    - name: Configure OpenSSL env vars
-      run: |
-        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> $GITHUB_ENV
-        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> $GITHUB_ENV
-        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
-    - name: 'Restore OpenSSL build'
-      id: cache-openssl
-      uses: actions/cache@v3
-      with:
-        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
-    - name: Install OpenSSL
-      if: steps.cache-openssl.outputs.cache-hit != 'true'
-      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
-    - name: Configure ccache action
-      uses: hendrikmuhs/ccache-action@v1.2
-    - name: Setup directory envs for out-of-tree builds
-      run: |
-        echo "CPYTHON_RO_SRCDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-ro-srcdir)" >> $GITHUB_ENV
-        echo "CPYTHON_BUILDDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-builddir)" >> $GITHUB_ENV
-    - name: Create directories for read-only out-of-tree builds
-      run: mkdir -p $CPYTHON_RO_SRCDIR $CPYTHON_BUILDDIR
-    - name: Bind mount sources read-only
-      run: sudo mount --bind -o ro $GITHUB_WORKSPACE $CPYTHON_RO_SRCDIR
-    - name: Configure CPython out-of-tree
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: ../cpython-ro-srcdir/configure --with-pydebug --with-openssl=$OPENSSL_DIR
-    - name: Build CPython out-of-tree
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: make -j4
-    - name: Display build info
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: make pythoninfo
-    - name: Remount sources writable for tests
-      # some tests write to srcdir, lack of pyc files slows down testing
-      run: sudo mount $CPYTHON_RO_SRCDIR -oremount,rw
-    - name: Tests
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: xvfb-run make buildbottest TESTOPTS="-j4 -uall,-cpu"
+    uses: ./.github/workflows/reusable-ubuntu.yml
+    with:
+      config_hash: ${{ needs.check_source.outputs.config_hash }}
+      options: |
+        ../cpython-ro-srcdir/configure \
+          --config-cache \
+          --with-pydebug \
+          --with-openssl=$OPENSSL_DIR
+
+  build_ubuntu_free_threaded:
+    name: 'Ubuntu (free-threaded)'
+    needs: check_source
+    if: needs.check_source.outputs.run_tests == 'true'
+    uses: ./.github/workflows/reusable-ubuntu.yml
+    with:
+      config_hash: ${{ needs.check_source.outputs.config_hash }}
+      options: |
+        ../cpython-ro-srcdir/configure \
+          --config-cache \
+          --with-pydebug \
+          --with-openssl=$OPENSSL_DIR \
+          --disable-gil
 
   build_ubuntu_ssltests:
     name: 'Ubuntu SSL tests with OpenSSL'
@@ -263,14 +248,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        openssl_ver: [1.1.1t, 3.0.8, 3.1.0-beta1]
+        openssl_ver: [1.1.1w, 3.0.11, 3.1.3]
     env:
       OPENSSL_VER: ${{ matrix.openssl_ver }}
       MULTISSL_DIR: ${{ github.workspace }}/multissl
       OPENSSL_DIR: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}
       LD_LIBRARY_PATH: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}/lib
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+    - name: Restore config.cache
+      uses: actions/cache@v3
+      with:
+        path: config.cache
+        key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -295,7 +285,7 @@ jobs:
     - name: Configure ccache action
       uses: hendrikmuhs/ccache-action@v1.2
     - name: Configure CPython
-      run: ./configure --with-pydebug --with-openssl=$OPENSSL_DIR
+      run: ./configure --config-cache --with-pydebug --with-openssl=$OPENSSL_DIR
     - name: Build CPython
       run: make -j4
     - name: Display build info
@@ -304,16 +294,16 @@ jobs:
       run: ./python Lib/test/ssltests.py
 
   test_hypothesis:
-    name: "Hypothesis Tests on Ubuntu"
+    name: "Hypothesis tests on Ubuntu"
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true' && needs.check_source.outputs.run_hypothesis == 'true'
     env:
-      OPENSSL_VER: 1.1.1t
+      OPENSSL_VER: 3.0.11
       PYTHONSTRICTEXTENSIONBUILD: 1
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -345,9 +335,18 @@ jobs:
       run: mkdir -p $CPYTHON_RO_SRCDIR $CPYTHON_BUILDDIR
     - name: Bind mount sources read-only
       run: sudo mount --bind -o ro $GITHUB_WORKSPACE $CPYTHON_RO_SRCDIR
+    - name: Restore config.cache
+      uses: actions/cache@v3
+      with:
+        path: ${{ env.CPYTHON_BUILDDIR }}/config.cache
+        key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}
     - name: Configure CPython out-of-tree
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: ../cpython-ro-srcdir/configure --with-pydebug --with-openssl=$OPENSSL_DIR
+      run: |
+        ../cpython-ro-srcdir/configure \
+          --config-cache \
+          --with-pydebug \
+          --with-openssl=$OPENSSL_DIR
     - name: Build CPython out-of-tree
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
       run: make -j4
@@ -367,7 +366,15 @@ jobs:
         VENV_PYTHON=$VENV_LOC/bin/python
         echo "HYPOVENV=${VENV_LOC}" >> $GITHUB_ENV
         echo "VENV_PYTHON=${VENV_PYTHON}" >> $GITHUB_ENV
-        ./python -m venv $VENV_LOC && $VENV_PYTHON -m pip install -U hypothesis
+        ./python -m venv $VENV_LOC && $VENV_PYTHON -m pip install -r ${GITHUB_WORKSPACE}/Tools/requirements-hypothesis.txt
+    - name: 'Restore Hypothesis database'
+      id: cache-hypothesis-database
+      uses: actions/cache@v3
+      with:
+        path: ./hypothesis
+        key: hypothesis-database-${{ github.head_ref || github.run_id }}
+        restore-keys: |
+          - hypothesis-database-
     - name: "Run tests"
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
       run: |
@@ -388,6 +395,11 @@ jobs:
           -x test_subprocess \
           -x test_signal \
           -x test_sysconfig
+    - uses: actions/upload-artifact@v3
+      if: always()
+      with:
+        name: hypothesis-example-db
+        path: .hypothesis/examples/
 
 
   build_asan:
@@ -397,11 +409,16 @@ jobs:
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     env:
-      OPENSSL_VER: 1.1.1t
+      OPENSSL_VER: 3.0.11
       PYTHONSTRICTEXTENSIONBUILD: 1
       ASAN_OPTIONS: detect_leaks=0:allocator_may_return_null=1:handle_segv=0
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+    - name: Restore config.cache
+      uses: actions/cache@v3
+      with:
+        path: config.cache
+        key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -430,10 +447,118 @@ jobs:
     - name: Configure ccache action
       uses: hendrikmuhs/ccache-action@v1.2
     - name: Configure CPython
-      run: ./configure --with-address-sanitizer --without-pymalloc
+      run: ./configure --config-cache --with-address-sanitizer --without-pymalloc
     - name: Build CPython
       run: make -j4
     - name: Display build info
       run: make pythoninfo
     - name: Tests
-      run: xvfb-run make buildbottest TESTOPTS="-j4 -uall,-cpu"
+      run: xvfb-run make test
+
+  # CIFuzz job based on https://google.github.io/oss-fuzz/getting-started/continuous-integration/
+  cifuzz:
+    name: CIFuzz
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    needs: check_source
+    if: needs.check_source.outputs.run_cifuzz == 'true'
+    permissions:
+      security-events: write
+    strategy:
+      fail-fast: false
+      matrix:
+        sanitizer: [address, undefined, memory]
+    steps:
+      - name: Build fuzzers (${{ matrix.sanitizer }})
+        id: build
+        uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+        with:
+          oss-fuzz-project-name: cpython3
+          sanitizer: ${{ matrix.sanitizer }}
+      - name: Run fuzzers (${{ matrix.sanitizer }})
+        uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+        with:
+          fuzz-seconds: 600
+          oss-fuzz-project-name: cpython3
+          output-sarif: true
+          sanitizer: ${{ matrix.sanitizer }}
+      - name: Upload crash
+        uses: actions/upload-artifact@v3
+        if: failure() && steps.build.outcome == 'success'
+        with:
+          name: ${{ matrix.sanitizer }}-artifacts
+          path: ./out/artifacts
+      - name: Upload SARIF
+        if: always() && steps.build.outcome == 'success'
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: cifuzz-sarif/results.sarif
+          checkout_path: cifuzz-sarif
+
+  all-required-green:  # This job does nothing and is only used for the branch protection
+    name: All required checks pass
+    if: always()
+
+    needs:
+    - check_source  # Transitive dependency, needed to access `run_tests` value
+    - check-docs
+    - check_generated_files
+    - build_macos
+    - build_macos_free_threaded
+    - build_ubuntu
+    - build_ubuntu_free_threaded
+    - build_ubuntu_ssltests
+    - build_windows
+    - build_windows_free_threaded
+    - test_hypothesis
+    - build_asan
+    - cifuzz
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check whether the needed jobs succeeded or failed
+      uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe
+      with:
+        allowed-failures: >-
+          build_ubuntu_ssltests,
+          cifuzz,
+          test_hypothesis,
+        allowed-skips: >-
+          ${{
+            !fromJSON(needs.check_source.outputs.run-docs)
+            && '
+            check-docs,
+            '
+            || ''
+          }}
+          ${{
+            needs.check_source.outputs.run_tests != 'true'
+            && '
+            check_generated_files,
+            build_macos,
+            build_macos_free_threaded,
+            build_ubuntu,
+            build_ubuntu_free_threaded,
+            build_ubuntu_ssltests,
+            build_windows,
+            build_windows_free_threaded,
+            build_asan,
+            '
+            || ''
+          }}
+          ${{
+            !fromJSON(needs.check_source.outputs.run_cifuzz)
+            && '
+            cifuzz,
+            '
+            || ''
+          }}
+          ${{
+            !fromJSON(needs.check_source.outputs.run_hypothesis)
+            && '
+            test_hypothesis,
+            '
+            || ''
+          }}
+        jobs: ${{ toJSON(needs) }}
diff --git a/.github/workflows/build_msi.yml b/.github/workflows/build_msi.yml
index 2bed09014e0ff2..29282dffa37ec0 100644
--- a/.github/workflows/build_msi.yml
+++ b/.github/workflows/build_msi.yml
@@ -8,12 +8,14 @@ on:
     - '3.*'
     paths:
     - 'Tools/msi/**'
+    - '.github/workflows/build_msi.yml'
   pull_request:
     branches:
     - 'main'
     - '3.*'
     paths:
     - 'Tools/msi/**'
+    - '.github/workflows/build_msi.yml'
 
 permissions:
   contents: read
@@ -31,6 +33,6 @@ jobs:
       matrix:
         type: [x86, x64, arm64]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build CPython installer
-      run: .\Tools\msi\build.bat -${{ matrix.type }}
+      run: .\Tools\msi\build.bat --doc -${{ matrix.type }}
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
deleted file mode 100644
index 3f7550cc72943b..00000000000000
--- a/.github/workflows/doc.yml
+++ /dev/null
@@ -1,127 +0,0 @@
-name: Docs
-
-on:
-  workflow_dispatch:
-  #push:
-  #  branches:
-  #  - 'main'
-  #  - '3.11'
-  #  - '3.10'
-  #  - '3.9'
-  #  - '3.8'
-  #  - '3.7'
-  #  paths:
-  #  - 'Doc/**'
-  pull_request:
-    branches:
-    - 'main'
-    - '3.11'
-    - '3.10'
-    - '3.9'
-    - '3.8'
-    - '3.7'
-    paths:
-    - 'Doc/**'
-    - 'Misc/**'
-    - '.github/workflows/doc.yml'
-
-permissions:
-  contents: read
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  build_doc:
-    name: 'Docs'
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v3
-    - name: Register Sphinx problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/sphinx.json"
-    - name: 'Set up Python'
-      uses: actions/setup-python@v4
-      with:
-        python-version: '3'
-        cache: 'pip'
-        cache-dependency-path: 'Doc/requirements.txt'
-    - name: 'Install build dependencies'
-      run: make -C Doc/ venv
-    - name: 'Check documentation'
-      run: make -C Doc/ check
-    - name: 'Build HTML documentation'
-      run: make -C Doc/ SPHINXOPTS="-q" SPHINXERRORHANDLING="-W --keep-going" html
-
-    # Add pull request annotations for Sphinx nitpicks (missing references)
-    - name: 'Get list of changed files'
-      if: github.event_name == 'pull_request'
-      id: changed_files
-      uses: Ana06/get-changed-files@v2.2.0
-      with:
-        filter: "Doc/**"
-    - name: 'Build changed files in nit-picky mode'
-      if: github.event_name == 'pull_request'
-      continue-on-error: true
-      run: |
-        # Mark files the pull request modified
-        touch ${{ steps.changed_files.outputs.added_modified }}
-        # Build docs with the '-n' (nit-picky) option; convert warnings to annotations
-        make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n --keep-going" html 2>&1 |
-            python Doc/tools/warnings-to-gh-actions.py
-
-    # Ensure some files always pass Sphinx nit-picky mode (no missing references)
-    - name: 'Build known-good files in nit-picky mode'
-      run: |
-        # Mark files that must pass nit-picky
-        python Doc/tools/touch-clean-files.py
-        # Build docs with the '-n' (nit-picky) option, convert warnings to errors (-W)
-        make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n -W --keep-going" html 2>&1
-
-  # This build doesn't use problem matchers or check annotations
-  # It also does not run 'make check', as sphinx-lint is not installed into the
-  # environment.
-  build_doc_oldest_supported_sphinx:
-    name: 'Docs (Oldest Sphinx)'
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v3
-    - name: 'Set up Python'
-      uses: actions/setup-python@v4
-      with:
-        python-version: '3.11'  # known to work with Sphinx 3.2
-        cache: 'pip'
-        cache-dependency-path: 'Doc/requirements-oldest-sphinx.txt'
-    - name: 'Install build dependencies'
-      run: make -C Doc/ venv REQUIREMENTS="requirements-oldest-sphinx.txt"
-    - name: 'Build HTML documentation'
-      run: make -C Doc/ SPHINXOPTS="-q" SPHINXERRORHANDLING="-W --keep-going" html
-
-  # Run "doctest" on HEAD as new syntax doesn't exist in the latest stable release
-  doctest:
-    name: 'Doctest'
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v3
-    - name: Register Sphinx problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/sphinx.json"
-    - uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}
-        restore-keys: |
-          ubuntu-doc-
-    - name: 'Install Dependencies'
-      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install wamerican
-    - name: 'Configure CPython'
-      run: ./configure --with-pydebug
-    - name: 'Build CPython'
-      run: make -j4
-    - name: 'Install build dependencies'
-      run: make -C Doc/ PYTHON=../python venv
-    # Use "xvfb-run" since some doctest tests open GUI windows
-    - name: 'Run documentation doctest'
-      run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="-W --keep-going" doctest
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 4481ea80bfd936..6c1c29a58cf4fc 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -5,6 +5,10 @@ on: [push, pull_request, workflow_dispatch]
 permissions:
   contents: read
 
+env:
+  FORCE_COLOR: 1
+  RUFF_OUTPUT_FORMAT: github
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
@@ -15,7 +19,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: "3.x"
diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 1315bb5a966f01..792903a90a4880 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -7,8 +7,14 @@ on:
       - main
   pull_request:
     paths:
-      - "Tools/clinic/**"
       - ".github/workflows/mypy.yml"
+      - "Lib/test/libregrtest/**"
+      - "Tools/build/generate_sbom.py"
+      - "Tools/cases_generator/**"
+      - "Tools/clinic/**"
+      - "Tools/peg_generator/**"
+      - "Tools/requirements-dev.txt"
+      - "Tools/wasm/**"
   workflow_dispatch:
 
 permissions:
@@ -25,15 +31,25 @@ concurrency:
 
 jobs:
   mypy:
-    name: Run mypy on Tools/clinic/
+    strategy:
+      matrix:
+        target: [
+          "Lib/test/libregrtest",
+          "Tools/build/",
+          "Tools/cases_generator",
+          "Tools/clinic",
+          "Tools/peg_generator",
+          "Tools/wasm",
+        ]
+    name: Run mypy on ${{ matrix.target }}
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.x"
+          python-version: "3.11"
           cache: pip
-          cache-dependency-path: Tools/clinic/requirements-dev.txt
-      - run: pip install -r Tools/clinic/requirements-dev.txt
-      - run: mypy --config-file Tools/clinic/mypy.ini
+          cache-dependency-path: Tools/requirements-dev.txt
+      - run: pip install -r Tools/requirements-dev.txt
+      - run: mypy --config-file ${{ matrix.target }}/mypy.ini
diff --git a/.github/workflows/new-bugs-announce-notifier.yml b/.github/workflows/new-bugs-announce-notifier.yml
index 73806c5d6d58af..9f1a8a824e5f19 100644
--- a/.github/workflows/new-bugs-announce-notifier.yml
+++ b/.github/workflows/new-bugs-announce-notifier.yml
@@ -13,12 +13,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 20
       - run: npm install mailgun.js form-data
       - name: Send notification
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         env:
           MAILGUN_API_KEY: ${{ secrets.MAILGUN_PYTHON_ORG_MAILGUN_KEY }}
         with:
@@ -41,7 +41,10 @@ jobs:
                 url    : issue.data.html_url,
                 labels : issue.data.labels.map(label => { return label.name }).join(", "),
                 assignee : issue.data.assignees.map(assignee => { return assignee.login }),
-                body   : issue.data.body
+                // We need to truncate the body size, because the max size for
+                // the whole payload is 16kb. We want to be safe and assume that
+                // body can take up to ~8kb of space.
+                body   : issue.data.body.substring(0, 8000)
               };
 
               const data = {
diff --git a/.github/workflows/posix-deps-apt.sh b/.github/workflows/posix-deps-apt.sh
index a220896f2cd7be..0800401f4cd113 100755
--- a/.github/workflows/posix-deps-apt.sh
+++ b/.github/workflows/posix-deps-apt.sh
@@ -1,9 +1,11 @@
 #!/bin/sh
 apt-get update
 
+# autoconf-archive is needed by autoreconf (check_generated_files job)
 apt-get -yq install \
     build-essential \
     pkg-config \
+    autoconf-archive \
     ccache \
     gdb \
     lcov \
@@ -19,6 +21,7 @@ apt-get -yq install \
     libssl-dev \
     lzma \
     lzma-dev \
+    strace \
     tk-dev \
     uuid-dev \
     xvfb \
diff --git a/.github/workflows/require-pr-label.yml b/.github/workflows/require-pr-label.yml
index 88aaea039f04f4..080204bcfd3b94 100644
--- a/.github/workflows/require-pr-label.yml
+++ b/.github/workflows/require-pr-label.yml
@@ -5,8 +5,8 @@ on:
     types: [opened, reopened, labeled, unlabeled, synchronize]
 
 permissions:
-  issues: read
-  pull-requests: read
+  issues: write
+  pull-requests: write
 
 jobs:
   label:
@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: mheap/github-action-required-labels@v4
+      - uses: mheap/github-action-required-labels@v5
         with:
           mode: exactly
           count: 0
diff --git a/.github/workflows/reusable-docs.yml b/.github/workflows/reusable-docs.yml
new file mode 100644
index 00000000000000..1c4fa4239c1e34
--- /dev/null
+++ b/.github/workflows/reusable-docs.yml
@@ -0,0 +1,108 @@
+name: Docs
+
+on:
+  workflow_call:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  build_doc:
+    name: 'Docs'
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    env:
+      branch_base: 'origin/${{ github.event.pull_request.base.ref }}'
+      branch_pr: 'origin/${{ github.event.pull_request.head.ref }}'
+      refspec_base: '+${{ github.event.pull_request.base.sha }}:remotes/origin/${{ github.event.pull_request.base.ref }}'
+      refspec_pr: '+${{ github.event.pull_request.head.sha }}:remotes/origin/${{ github.event.pull_request.head.ref }}'
+    steps:
+    - name: 'Check out latest PR branch commit'
+      uses: actions/checkout@v4
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
+    # Adapted from https://github.com/actions/checkout/issues/520#issuecomment-1167205721
+    - name: 'Fetch commits to get branch diff'
+      run: |
+        # Fetch enough history to find a common ancestor commit (aka merge-base):
+        git fetch origin ${{ env.refspec_pr }} --depth=$(( ${{ github.event.pull_request.commits }} + 1 )) \
+          --no-tags --prune --no-recurse-submodules
+
+        # This should get the oldest commit in the local fetched history (which may not be the commit the PR branched from):
+        COMMON_ANCESTOR=$( git rev-list --first-parent --max-parents=0 --max-count=1 ${{ env.branch_pr }} )
+        DATE=$( git log --date=iso8601 --format=%cd "${COMMON_ANCESTOR}" )
+
+        # Get all commits since that commit date from the base branch (eg: master or main):
+        git fetch origin ${{ env.refspec_base }} --shallow-since="${DATE}" \
+          --no-tags --prune --no-recurse-submodules
+    - name: 'Set up Python'
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3'
+        cache: 'pip'
+        cache-dependency-path: 'Doc/requirements.txt'
+    - name: 'Install build dependencies'
+      run: make -C Doc/ venv
+
+    # To annotate PRs with Sphinx nitpicks (missing references)
+    - name: 'Build HTML documentation'
+      continue-on-error: true
+      run: |
+        set -Eeuo pipefail
+        # Build docs with the '-n' (nit-picky) option; write warnings to file
+        make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n -W --keep-going -w sphinx-warnings.txt" html
+    - name: 'Check warnings'
+      if: github.event_name == 'pull_request'
+      run: |
+        python Doc/tools/check-warnings.py \
+          --annotate-diff '${{ env.branch_base }}' '${{ env.branch_pr }}' \
+          --fail-if-regression \
+          --fail-if-improved
+
+  # This build doesn't use problem matchers or check annotations
+  build_doc_oldest_supported_sphinx:
+    name: 'Docs (Oldest Sphinx)'
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+    - uses: actions/checkout@v4
+    - name: 'Set up Python'
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11'  # known to work with Sphinx 4.2
+        cache: 'pip'
+        cache-dependency-path: 'Doc/requirements-oldest-sphinx.txt'
+    - name: 'Install build dependencies'
+      run: make -C Doc/ venv REQUIREMENTS="requirements-oldest-sphinx.txt"
+    - name: 'Build HTML documentation'
+      run: make -C Doc/ SPHINXOPTS="-q" SPHINXERRORHANDLING="-W --keep-going" html
+
+  # Run "doctest" on HEAD as new syntax doesn't exist in the latest stable release
+  doctest:
+    name: 'Doctest'
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}
+        restore-keys: |
+          ubuntu-doc-
+    - name: 'Install Dependencies'
+      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install wamerican
+    - name: 'Configure CPython'
+      run: ./configure --with-pydebug
+    - name: 'Build CPython'
+      run: make -j4
+    - name: 'Install build dependencies'
+      run: make -C Doc/ PYTHON=../python venv
+    # Use "xvfb-run" since some doctest tests open GUI windows
+    - name: 'Run documentation doctest'
+      run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="-W --keep-going" doctest
diff --git a/.github/workflows/reusable-macos.yml b/.github/workflows/reusable-macos.yml
new file mode 100644
index 00000000000000..22f46d18e1b43a
--- /dev/null
+++ b/.github/workflows/reusable-macos.yml
@@ -0,0 +1,46 @@
+on:
+  workflow_call:
+    inputs:
+      config_hash:
+        required: true
+        type: string
+      free-threaded:
+        required: false
+        type: boolean
+        default: false
+
+jobs:
+  build_macos:
+    name: 'build and test'
+    runs-on: macos-latest
+    timeout-minutes: 60
+    env:
+      HOMEBREW_NO_ANALYTICS: 1
+      HOMEBREW_NO_AUTO_UPDATE: 1
+      HOMEBREW_NO_INSTALL_CLEANUP: 1
+      PYTHONSTRICTEXTENSIONBUILD: 1
+    steps:
+    - uses: actions/checkout@v4
+    - name: Restore config.cache
+      uses: actions/cache@v3
+      with:
+        path: config.cache
+        key: ${{ github.job }}-${{ runner.os }}-${{ inputs.config_hash }}
+    - name: Install Homebrew dependencies
+      run: brew install pkg-config openssl@3.0 xz gdbm tcl-tk
+    - name: Configure CPython
+      run: |
+        GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \
+        GDBM_LIBS="-L$(brew --prefix gdbm)/lib -lgdbm" \
+        ./configure \
+          --config-cache \
+          --with-pydebug \
+          ${{ inputs.free-threaded && '--disable-gil' || '' }} \
+          --prefix=/opt/python-dev \
+          --with-openssl="$(brew --prefix openssl@3.0)"
+    - name: Build CPython
+      run: make -j4
+    - name: Display build info
+      run: make pythoninfo
+    - name: Tests
+      run: make test
diff --git a/.github/workflows/reusable-ubuntu.yml b/.github/workflows/reusable-ubuntu.yml
new file mode 100644
index 00000000000000..819b45bda7f980
--- /dev/null
+++ b/.github/workflows/reusable-ubuntu.yml
@@ -0,0 +1,71 @@
+on:
+  workflow_call:
+    inputs:
+      config_hash:
+        required: true
+        type: string
+      options:
+        required: true
+        type: string
+
+jobs:
+  build_ubuntu_reusable:
+    name: 'build and test'
+    timeout-minutes: 60
+    runs-on: ubuntu-20.04
+    env:
+      OPENSSL_VER: 3.0.11
+      PYTHONSTRICTEXTENSIONBUILD: 1
+    steps:
+    - uses: actions/checkout@v4
+    - name: Register gcc problem matcher
+      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
+    - name: Install dependencies
+      run: sudo ./.github/workflows/posix-deps-apt.sh
+    - name: Configure OpenSSL env vars
+      run: |
+        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> $GITHUB_ENV
+        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
+    - name: 'Restore OpenSSL build'
+      id: cache-openssl
+      uses: actions/cache@v3
+      with:
+        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
+        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
+    - name: Install OpenSSL
+      if: steps.cache-openssl.outputs.cache-hit != 'true'
+      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
+    - name: Add ccache to PATH
+      run: |
+        echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
+    - name: Configure ccache action
+      uses: hendrikmuhs/ccache-action@v1.2
+    - name: Setup directory envs for out-of-tree builds
+      run: |
+        echo "CPYTHON_RO_SRCDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-ro-srcdir)" >> $GITHUB_ENV
+        echo "CPYTHON_BUILDDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-builddir)" >> $GITHUB_ENV
+    - name: Create directories for read-only out-of-tree builds
+      run: mkdir -p $CPYTHON_RO_SRCDIR $CPYTHON_BUILDDIR
+    - name: Bind mount sources read-only
+      run: sudo mount --bind -o ro $GITHUB_WORKSPACE $CPYTHON_RO_SRCDIR
+    - name: Restore config.cache
+      uses: actions/cache@v3
+      with:
+        path: ${{ env.CPYTHON_BUILDDIR }}/config.cache
+        key: ${{ github.job }}-${{ runner.os }}-${{ inputs.config_hash }}
+    - name: Configure CPython out-of-tree
+      working-directory: ${{ env.CPYTHON_BUILDDIR }}
+      run: ${{ inputs.options }}
+    - name: Build CPython out-of-tree
+      working-directory: ${{ env.CPYTHON_BUILDDIR }}
+      run: make -j4
+    - name: Display build info
+      working-directory: ${{ env.CPYTHON_BUILDDIR }}
+      run: make pythoninfo
+    - name: Remount sources writable for tests
+      # some tests write to srcdir, lack of pyc files slows down testing
+      run: sudo mount $CPYTHON_RO_SRCDIR -oremount,rw
+    - name: Tests
+      working-directory: ${{ env.CPYTHON_BUILDDIR }}
+      run: xvfb-run make test
diff --git a/.github/workflows/reusable-windows.yml b/.github/workflows/reusable-windows.yml
new file mode 100644
index 00000000000000..29e0a7e35b5450
--- /dev/null
+++ b/.github/workflows/reusable-windows.yml
@@ -0,0 +1,53 @@
+on:
+  workflow_call:
+    inputs:
+      free-threaded:
+        required: false
+        type: boolean
+        default: false
+
+jobs:
+  build_win32:
+    name: 'build and test (x86)'
+    runs-on: windows-latest
+    timeout-minutes: 60
+    env:
+      IncludeUwp: 'true'
+    steps:
+    - uses: actions/checkout@v4
+    - name: Build CPython
+      run: .\PCbuild\build.bat -e -d -p Win32 ${{ inputs.free-threaded && '--disable-gil' || '' }}
+    - name: Display build info
+      run: .\python.bat -m test.pythoninfo
+    - name: Tests
+      run: .\PCbuild\rt.bat -p Win32 -d -q --fast-ci
+
+  build_win_amd64:
+    name: 'build and test (x64)'
+    runs-on: windows-latest
+    timeout-minutes: 60
+    env:
+       IncludeUwp: 'true'
+    steps:
+    - uses: actions/checkout@v4
+    - name: Register MSVC problem matcher
+      run: echo "::add-matcher::.github/problem-matchers/msvc.json"
+    - name: Build CPython
+      run: .\PCbuild\build.bat -e -d -p x64 ${{ inputs.free-threaded && '--disable-gil' || '' }}
+    - name: Display build info
+      run: .\python.bat -m test.pythoninfo
+    - name: Tests
+      run: .\PCbuild\rt.bat -p x64 -d -q --fast-ci
+
+  build_win_arm64:
+    name: 'build (arm64)'
+    runs-on: windows-latest
+    timeout-minutes: 60
+    env:
+      IncludeUwp: 'true'
+    steps:
+    - uses: actions/checkout@v4
+    - name: Register MSVC problem matcher
+      run: echo "::add-matcher::.github/problem-matchers/msvc.json"
+    - name: Build CPython
+      run: .\PCbuild\build.bat -e -d -p arm64 ${{ inputs.free-threaded && '--disable-gil' || '' }}
diff --git a/.github/workflows/verify-ensurepip-wheels.yml b/.github/workflows/verify-ensurepip-wheels.yml
index 17d841f1f1c54a..4a545037bf6e2b 100644
--- a/.github/workflows/verify-ensurepip-wheels.yml
+++ b/.github/workflows/verify-ensurepip-wheels.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3'
diff --git a/.gitignore b/.gitignore
index d9c4a7972f076d..c424a894c2a6e0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,10 @@
 *.gc??
 *.profclang?
 *.profraw
+# Copies of binaries before BOLT optimizations.
+*.prebolt
+# BOLT profile data.
+*.fdata
 *.dyn
 .gdb_history
 .purify
@@ -38,6 +42,7 @@ gmon.out
 .coverage
 .mypy_cache/
 .pytest_cache/
+.ruff_cache/
 .DS_Store
 
 *.exe
@@ -57,7 +62,6 @@ Doc/.venv/
 Doc/env/
 Doc/.env/
 Include/pydtrace_probes.h
-Lib/lib2to3/*.pickle
 Lib/site-packages/*
 !Lib/site-packages/README.txt
 Lib/test/data/*
@@ -121,9 +125,11 @@ Tools/unicode/data/
 /config.status.lineno
 # hendrikmuhs/ccache-action@v1
 /.ccache
+/cross-build/
 /platform
 /profile-clean-stamp
 /profile-run-stamp
+/profile-bolt-stamp
 /Python/deepfreeze/*.c
 /pybuilddir.txt
 /pyconfig.h
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 808622f19a3dbf..35d9c64a8c5c15 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,36 @@
 repos:
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.1.2
+    hooks:
+      - id: ruff
+        name: Run Ruff on Lib/test/
+        args: [--exit-non-zero-on-fix]
+        files: ^Lib/test/
+      - id: ruff
+        name: Run Ruff on Argument Clinic
+        args: [--exit-non-zero-on-fix, --config=Tools/clinic/.ruff.toml]
+        files: ^Tools/clinic/|Lib/test/test_clinic.py
+
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v4.5.0
     hooks:
+      - id: check-toml
+        exclude: ^Lib/test/test_tomllib/
       - id: check-yaml
+      - id: end-of-file-fixer
+        types: [python]
+        exclude: Lib/test/tokenizedata/coding20731.py
       - id: trailing-whitespace
-        types_or: [c, python, rst]
+        types_or: [c, inc, python, rst]
+
+  - repo: https://github.com/sphinx-contrib/sphinx-lint
+    rev: v0.8.1
+    hooks:
+      - id: sphinx-lint
+        args: [--enable=default-role]
+        files: ^Doc/|^Misc/NEWS.d/next/
+
+  - repo: meta
+    hooks:
+      - id: check-hooks-apply
+      - id: check-useless-excludes
diff --git a/.readthedocs.yml b/.readthedocs.yml
index 898a9ae89dbb92..59830c79a404e0 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -13,6 +13,20 @@ build:
     python: "3"
 
   commands:
+    # https://docs.readthedocs.io/en/stable/build-customization.html#cancel-build-based-on-a-condition
+    #
+    # Cancel building pull requests when there aren't changes in the Doc directory.
+    #
+    # If there are no changes (git diff exits with 0) we force the command to return with 183.
+    # This is a special exit code on Read the Docs that will cancel the build immediately.
+    - |
+      if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && [ "$(git diff --quiet origin/main -- Doc/ .readthedocs.yml; echo $?)" -eq 0 ];
+      then
+        echo "No changes to Doc/ - exiting the build.";
+        exit 183;
+      fi
+
     - make -C Doc venv html
     - mkdir _readthedocs
     - mv Doc/build/html _readthedocs/html
+
diff --git a/Doc/Makefile b/Doc/Makefile
index c11ea6ce03e8a4..7af56e965e1be4 100644
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -7,7 +7,6 @@
 PYTHON       = python3
 VENVDIR      = ./venv
 SPHINXBUILD  = PATH=$(VENVDIR)/bin:$$PATH sphinx-build
-SPHINXLINT   = PATH=$(VENVDIR)/bin:$$PATH sphinx-lint
 BLURB        = PATH=$(VENVDIR)/bin:$$PATH blurb
 JOBS         = auto
 PAPER        =
@@ -30,6 +29,7 @@ help:
 	@echo "  venv       to create a venv with necessary tools"
 	@echo "  html       to make standalone HTML files"
 	@echo "  htmlview   to open the index page built by the html target in your browser"
+	@echo "  htmllive   to rebuild and reload HTML files in your browser"
 	@echo "  htmlhelp   to make HTML files and a HTML help project"
 	@echo "  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
 	@echo "  text       to make plain text files"
@@ -140,6 +140,11 @@ pydoc-topics: build
 htmlview: html
 	$(PYTHON) -c "import os, webbrowser; webbrowser.open('file://' + os.path.realpath('build/html/index.html'))"
 
+.PHONY: htmllive
+htmllive: SPHINXBUILD = $(VENVDIR)/bin/sphinx-autobuild
+htmllive: SPHINXOPTS = --re-ignore="/venv/"
+htmllive: html
+
 .PHONY: clean
 clean: clean-venv
 	-rm -rf build/*
@@ -216,11 +221,9 @@ dist:
 	rm dist/python-$(DISTVERSION)-docs-texinfo.tar
 
 .PHONY: check
-check:
-	# Check the docs and NEWS files with sphinx-lint.
-	# Ignore the tools and venv dirs and check that the default role is not used.
-	$(SPHINXLINT) -i tools -i $(VENVDIR) --enable default-role
-	$(SPHINXLINT) --enable default-role ../Misc/NEWS.d/next/
+check: venv
+	$(VENVDIR)/bin/python3 -m pre_commit --version > /dev/null || $(VENVDIR)/bin/python3 -m pip install pre-commit
+	$(VENVDIR)/bin/python3 -m pre_commit run --all-files
 
 .PHONY: serve
 serve:
diff --git a/Doc/bugs.rst b/Doc/bugs.rst
index d98192b369603e..908987cf41ff6e 100644
--- a/Doc/bugs.rst
+++ b/Doc/bugs.rst
@@ -38,7 +38,7 @@ though it may take a while to be processed.
    `Helping with Documentation <https://devguide.python.org/docquality/#helping-with-documentation>`_
       Comprehensive guide for individuals that are interested in contributing to Python documentation.
 
-   `Documentation Translations <https://devguide.python.org/documenting/#translating>`_
+   `Documentation Translations <https://devguide.python.org/documentation/translating/>`_
       A list of GitHub pages for documentation translation and their primary contacts.
 
 
diff --git a/Doc/c-api/abstract.rst b/Doc/c-api/abstract.rst
index 1823f9d70c79f3..f5df09fa7fd786 100644
--- a/Doc/c-api/abstract.rst
+++ b/Doc/c-api/abstract.rst
@@ -24,4 +24,3 @@ but whose items have not been set to some non-\ ``NULL`` value yet.
    mapping.rst
    iter.rst
    buffer.rst
-   objbuffer.rst
diff --git a/Doc/c-api/allocation.rst b/Doc/c-api/allocation.rst
index 0a8fcc5ae5fcdf..b3609c233156b6 100644
--- a/Doc/c-api/allocation.rst
+++ b/Doc/c-api/allocation.rst
@@ -27,22 +27,26 @@ Allocating Objects on the Heap
    length information for a variable-size object.
 
 
-.. c:function:: TYPE* PyObject_New(TYPE, PyTypeObject *type)
+.. c:macro:: PyObject_New(TYPE, typeobj)
 
-   Allocate a new Python object using the C structure type *TYPE* and the
-   Python type object *type*.  Fields not defined by the Python object header
-   are not initialized; the object's reference count will be one.  The size of
-   the memory allocation is determined from the :c:member:`~PyTypeObject.tp_basicsize` field of
-   the type object.
+   Allocate a new Python object using the C structure type *TYPE*
+   and the Python type object *typeobj* (``PyTypeObject*``).
+   Fields not defined by the Python object header are not initialized.
+   The caller will own the only reference to the object
+   (i.e. its reference count will be one).
+   The size of the memory allocation is determined from the
+   :c:member:`~PyTypeObject.tp_basicsize` field of the type object.
 
 
-.. c:function:: TYPE* PyObject_NewVar(TYPE, PyTypeObject *type, Py_ssize_t size)
+.. c:macro:: PyObject_NewVar(TYPE, typeobj, size)
 
    Allocate a new Python object using the C structure type *TYPE* and the
-   Python type object *type*.  Fields not defined by the Python object header
+   Python type object *typeobj* (``PyTypeObject*``).
+   Fields not defined by the Python object header
    are not initialized.  The allocated memory allows for the *TYPE* structure
-   plus *size* fields of the size given by the :c:member:`~PyTypeObject.tp_itemsize` field of
-   *type*.  This is useful for implementing objects like tuples, which are
+   plus *size* (``Py_ssize_t``) fields of the size
+   given by the :c:member:`~PyTypeObject.tp_itemsize` field of
+   *typeobj*.  This is useful for implementing objects like tuples, which are
    able to determine their size at construction time.  Embedding the array of
    fields into the same allocation decreases the number of allocations,
    improving the memory management efficiency.
@@ -50,8 +54,8 @@ Allocating Objects on the Heap
 
 .. c:function:: void PyObject_Del(void *op)
 
-   Releases memory allocated to an object using :c:func:`PyObject_New` or
-   :c:func:`PyObject_NewVar`.  This is normally called from the
+   Releases memory allocated to an object using :c:macro:`PyObject_New` or
+   :c:macro:`PyObject_NewVar`.  This is normally called from the
    :c:member:`~PyTypeObject.tp_dealloc` handler specified in the object's type.  The fields of
    the object should not be accessed after this call as the memory is no
    longer a valid Python object.
diff --git a/Doc/c-api/apiabiversion.rst b/Doc/c-api/apiabiversion.rst
index 62d542966622ce..f6c8284daeacb0 100644
--- a/Doc/c-api/apiabiversion.rst
+++ b/Doc/c-api/apiabiversion.rst
@@ -60,7 +60,7 @@ See :ref:`stable` for a discussion of API and ABI stability across versions.
 
    Use this for numeric comparisons, e.g. ``#if PY_VERSION_HEX >= ...``.
 
-   This version is also available via the symbol :data:`Py_Version`.
+   This version is also available via the symbol :c:var:`Py_Version`.
 
 .. c:var:: const unsigned long Py_Version
 
diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
index 9713431688d499..834aae9372fe3b 100644
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -27,9 +27,18 @@ unit; the entry in (round) parentheses is the Python object type that matches
 the format unit; and the entry in [square] brackets is the type of the C
 variable(s) whose address should be passed.
 
+.. _arg-parsing-string-and-buffers:
+
 Strings and buffers
 -------------------
 
+.. note::
+
+   On Python 3.12 and older, the macro :c:macro:`!PY_SSIZE_T_CLEAN` must be
+   defined before including :file:`Python.h` to use all ``#`` variants of
+   formats (``s#``, ``y#``, etc.) explained below.
+   This is not necessary on Python 3.13 and later.
+
 These formats allow accessing an object as a contiguous chunk of memory.
 You don't have to provide raw storage for the returned unicode or bytes
 area.
@@ -68,15 +77,6 @@ There are three ways strings and buffers can be converted to C:
    whether the input object is immutable (e.g. whether it would honor a request
    for a writable buffer, or whether another thread can mutate the data).
 
-.. note::
-
-   For all ``#`` variants of formats (``s#``, ``y#``, etc.), the macro
-   :c:macro:`PY_SSIZE_T_CLEAN` must be defined before including
-   :file:`Python.h`. On Python 3.9 and older, the type of the length argument
-   is :c:type:`Py_ssize_t` if the :c:macro:`PY_SSIZE_T_CLEAN` macro is defined,
-   or int otherwise.
-
-
 ``s`` (:class:`str`) [const char \*]
    Convert a Unicode object to a C pointer to a character string.
    A pointer to an existing string is stored in the character pointer
@@ -293,8 +293,10 @@ Other objects
 
 ``O`` (object) [PyObject \*]
    Store a Python object (without any conversion) in a C object pointer.  The C
-   program thus receives the actual object that was passed.  The object's reference
-   count is not increased.  The pointer stored is not ``NULL``.
+   program thus receives the actual object that was passed.  A new
+   :term:`strong reference` to the object is not created
+   (i.e. its reference count is not increased).
+   The pointer stored is not ``NULL``.
 
 ``O!`` (object) [*typeobject*, PyObject \*]
    Store a Python object in a C object pointer.  This is similar to ``O``, but
@@ -343,7 +345,7 @@ Other objects
    *items*.  Format units for sequences may be nested.
 
 It is possible to pass "long" integers (integers whose value exceeds the
-platform's :const:`LONG_MAX`) however no proper range checking is done --- the
+platform's :c:macro:`LONG_MAX`) however no proper range checking is done --- the
 most significant bits are silently truncated when the receiving field is too
 small to receive the value (actually, the semantics are inherited from downcasts
 in C --- your mileage may vary).
@@ -378,7 +380,8 @@ inside nested parentheses.  They are:
    mutually exclude each other.
 
 Note that any Python object references which are provided to the caller are
-*borrowed* references; do not decrement their reference count!
+*borrowed* references; do not release them
+(i.e. do not decrement their reference count)!
 
 Additional arguments passed to these functions must be addresses of variables
 whose type is determined by the format string; these are used to store values
@@ -410,21 +413,35 @@ API Functions
    than a variable number of arguments.
 
 
-.. c:function:: int PyArg_ParseTupleAndKeywords(PyObject *args, PyObject *kw, const char *format, char *keywords[], ...)
+.. c:function:: int PyArg_ParseTupleAndKeywords(PyObject *args, PyObject *kw, const char *format, char * const *keywords, ...)
 
    Parse the parameters of a function that takes both positional and keyword
-   parameters into local variables.  The *keywords* argument is a
-   ``NULL``-terminated array of keyword parameter names.  Empty names denote
+   parameters into local variables.
+   The *keywords* argument is a ``NULL``-terminated array of keyword parameter
+   names specified as null-terminated ASCII or UTF-8 encoded C strings.
+   Empty names denote
    :ref:`positional-only parameters <positional-only_parameter>`.
    Returns true on success; on failure, it returns false and raises the
    appropriate exception.
 
+   .. note::
+
+      The *keywords* parameter declaration is :c:expr:`char * const *` in C and
+      :c:expr:`const char * const *` in C++.
+      This can be overridden with the :c:macro:`PY_CXX_CONST` macro.
+
    .. versionchanged:: 3.6
       Added support for :ref:`positional-only parameters
       <positional-only_parameter>`.
 
+   .. versionchanged:: 3.13
+      The *keywords* parameter has now type :c:expr:`char * const *` in C and
+      :c:expr:`const char * const *` in C++, instead of :c:expr:`char **`.
+      Added support for non-ASCII keyword parameter names.
+
 
-.. c:function:: int PyArg_VaParseTupleAndKeywords(PyObject *args, PyObject *kw, const char *format, char *keywords[], va_list vargs)
+
+.. c:function:: int PyArg_VaParseTupleAndKeywords(PyObject *args, PyObject *kw, const char *format, char * const *keywords, va_list vargs)
 
    Identical to :c:func:`PyArg_ParseTupleAndKeywords`, except that it accepts a
    va_list rather than a variable number of arguments.
@@ -439,23 +456,31 @@ API Functions
    .. versionadded:: 3.2
 
 
-.. XXX deprecated, will be removed
 .. c:function:: int PyArg_Parse(PyObject *args, const char *format, ...)
 
-   Function used to deconstruct the argument lists of "old-style" functions ---
-   these are functions which use the :const:`METH_OLDARGS` parameter parsing
-   method, which has been removed in Python 3.  This is not recommended for use
-   in parameter parsing in new code, and most code in the standard interpreter
-   has been modified to no longer use this for that purpose.  It does remain a
-   convenient way to decompose other tuples, however, and may continue to be
-   used for that purpose.
+   Parse the parameter of a function that takes a single positional parameter
+   into a local variable.  Returns true on success; on failure, it returns
+   false and raises the appropriate exception.
+
+   Example::
+
+       // Function using METH_O calling convention
+       static PyObject*
+       my_function(PyObject *module, PyObject *arg)
+       {
+           int value;
+           if (!PyArg_Parse(arg, "i:my_function", &value)) {
+               return NULL;
+           }
+           // ... use value ...
+       }
 
 
 .. c:function:: int PyArg_UnpackTuple(PyObject *args, const char *name, Py_ssize_t min, Py_ssize_t max, ...)
 
    A simpler form of parameter retrieval which does not use a format string to
    specify the types of the arguments.  Functions which use this method to retrieve
-   their parameters should be declared as :const:`METH_VARARGS` in function or
+   their parameters should be declared as :c:macro:`METH_VARARGS` in function or
    method tables.  The tuple containing the actual parameters should be passed as
    *args*; it must actually be a tuple.  The length of the tuple must be at least
    *min* and no more than *max*; *min* and *max* may be equal.  Additional
@@ -469,7 +494,7 @@ API Functions
    will be set if there was a failure.
 
    This is an example of the use of this function, taken from the sources for the
-   :mod:`_weakref` helper module for weak references::
+   :mod:`!_weakref` helper module for weak references::
 
       static PyObject *
       weakref_ref(PyObject *self, PyObject *args)
@@ -489,6 +514,19 @@ API Functions
 
       PyArg_ParseTuple(args, "O|O:ref", &object, &callback)
 
+.. c:macro:: PY_CXX_CONST
+
+   The value to be inserted, if any, before :c:expr:`char * const *`
+   in the *keywords* parameter declaration of
+   :c:func:`PyArg_ParseTupleAndKeywords` and
+   :c:func:`PyArg_VaParseTupleAndKeywords`.
+   Default empty for C and ``const`` for C++
+   (:c:expr:`const char * const *`).
+   To override, define it to the desired value before including
+   :file:`Python.h`.
+
+   .. versionadded:: 3.13
+
 
 ---------------
 Building values
@@ -547,7 +585,7 @@ Building values
       Same as ``s#``.
 
    ``u`` (:class:`str`) [const wchar_t \*]
-      Convert a null-terminated :c:expr:`wchar_t` buffer of Unicode (UTF-16 or UCS-4)
+      Convert a null-terminated :c:type:`wchar_t` buffer of Unicode (UTF-16 or UCS-4)
       data to a Python Unicode object.  If the Unicode buffer pointer is ``NULL``,
       ``None`` is returned.
 
@@ -613,8 +651,10 @@ Building values
       Convert a C :c:type:`Py_complex` structure to a Python complex number.
 
    ``O`` (object) [PyObject \*]
-      Pass a Python object untouched (except for its reference count, which is
-      incremented by one).  If the object passed in is a ``NULL`` pointer, it is assumed
+      Pass a Python object untouched but create a new
+      :term:`strong reference` to it
+      (i.e. its reference count is incremented by one).
+      If the object passed in is a ``NULL`` pointer, it is assumed
       that this was caused because the call producing the argument found an error and
       set an exception. Therefore, :c:func:`Py_BuildValue` will return ``NULL`` but won't
       raise an exception.  If no exception has been raised yet, :exc:`SystemError` is
@@ -624,7 +664,7 @@ Building values
       Same as ``O``.
 
    ``N`` (object) [PyObject \*]
-      Same as ``O``, except it doesn't increment the reference count on the object.
+      Same as ``O``, except it doesn't create a new :term:`strong reference`.
       Useful when the object is created by a call to an object constructor in the
       argument list.
 
diff --git a/Doc/c-api/bool.rst b/Doc/c-api/bool.rst
index c197d447e9618c..b4dc4849d044e1 100644
--- a/Doc/c-api/bool.rst
+++ b/Doc/c-api/bool.rst
@@ -6,11 +6,17 @@ Boolean Objects
 ---------------
 
 Booleans in Python are implemented as a subclass of integers.  There are only
-two booleans, :const:`Py_False` and :const:`Py_True`.  As such, the normal
+two booleans, :c:data:`Py_False` and :c:data:`Py_True`.  As such, the normal
 creation and deletion functions don't apply to booleans.  The following macros
 are available, however.
 
 
+.. c:var:: PyTypeObject PyBool_Type
+
+   This instance of :c:type:`PyTypeObject` represents the Python boolean type; it
+   is the same object as :class:`bool` in the Python layer.
+
+
 .. c:function:: int PyBool_Check(PyObject *o)
 
    Return true if *o* is of type :c:data:`PyBool_Type`.  This function always
@@ -19,29 +25,32 @@ are available, however.
 
 .. c:var:: PyObject* Py_False
 
-   The Python ``False`` object.  This object has no methods.  It needs to be
-   treated just like any other object with respect to reference counts.
+   The Python ``False`` object.  This object has no methods and is
+   :term:`immortal`.
+
+   .. versionchanged:: 3.12
+      :c:data:`Py_False` is :term:`immortal`.
 
 
 .. c:var:: PyObject* Py_True
 
-   The Python ``True`` object.  This object has no methods.  It needs to be treated
-   just like any other object with respect to reference counts.
+   The Python ``True`` object.  This object has no methods and is
+   :term:`immortal`.
+
+   .. versionchanged:: 3.12
+      :c:data:`Py_True` is :term:`immortal`.
 
 
 .. c:macro:: Py_RETURN_FALSE
 
-   Return :const:`Py_False` from a function, properly incrementing its reference
-   count.
+   Return :c:data:`Py_False` from a function.
 
 
 .. c:macro:: Py_RETURN_TRUE
 
-   Return :const:`Py_True` from a function, properly incrementing its reference
-   count.
+   Return :c:data:`Py_True` from a function.
 
 
 .. c:function:: PyObject* PyBool_FromLong(long v)
 
-   Return a new reference to :const:`Py_True` or :const:`Py_False` depending on the
-   truth value of *v*.
+   Return :c:data:`Py_True` or :c:data:`Py_False`, depending on the truth value of *v*.
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index 91d1edd9b2ec46..e572815ffd6259 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -44,7 +44,7 @@ the elements exposed by an :class:`array.array` can be multi-byte values.
 
 An example consumer of the buffer interface is the :meth:`~io.BufferedIOBase.write`
 method of file objects: any object that can export a series of bytes through
-the buffer interface can be written to a file.  While :meth:`write` only
+the buffer interface can be written to a file.  While :meth:`!write` only
 needs read-only access to the internal contents of the object passed to it,
 other methods such as :meth:`~io.BufferedIOBase.readinto` need write access
 to the contents of their argument.  The buffer interface allows objects to
@@ -102,7 +102,9 @@ a buffer, see :c:func:`PyObject_GetBuffer`.
    .. c:member:: PyObject *obj
 
       A new reference to the exporting object. The reference is owned by
-      the consumer and automatically decremented and set to ``NULL`` by
+      the consumer and automatically released
+      (i.e. reference count decremented)
+      and set to ``NULL`` by
       :c:func:`PyBuffer_Release`. The field is the equivalent of the return
       value of any standard C-API function.
 
@@ -159,10 +161,7 @@ a buffer, see :c:func:`PyObject_GetBuffer`.
       If it is ``0``, :c:member:`~Py_buffer.buf` points to a single item representing
       a scalar. In this case, :c:member:`~Py_buffer.shape`, :c:member:`~Py_buffer.strides`
       and :c:member:`~Py_buffer.suboffsets` MUST be ``NULL``.
-
-      The macro :c:macro:`PyBUF_MAX_NDIM` limits the maximum number of dimensions
-      to 64. Exporters MUST respect this limit, consumers of multi-dimensional
-      buffers SHOULD be able to handle up to :c:macro:`PyBUF_MAX_NDIM` dimensions.
+      The maximum number of dimensions is given by :c:macro:`PyBUF_MAX_NDIM`.
 
    .. c:member:: Py_ssize_t *shape
 
@@ -215,6 +214,17 @@ a buffer, see :c:func:`PyObject_GetBuffer`.
       freed when the buffer is released. The consumer MUST NOT alter this
       value.
 
+
+Constants:
+
+.. c:macro:: PyBUF_MAX_NDIM
+
+   The maximum number of dimensions the memory represents.
+   Exporters MUST respect this limit, consumers of multi-dimensional
+   buffers SHOULD be able to handle up to :c:macro:`!PyBUF_MAX_NDIM` dimensions.
+   Currently set to 64.
+
+
 .. _buffer-request-types:
 
 Buffer request types
@@ -225,7 +235,7 @@ object via :c:func:`PyObject_GetBuffer`. Since the complexity of the logical
 structure of the memory can vary drastically, the consumer uses the *flags*
 argument to specify the exact buffer type it can handle.
 
-All :c:data:`Py_buffer` fields are unambiguously defined by the request
+All :c:type:`Py_buffer` fields are unambiguously defined by the request
 type.
 
 request-independent fields
@@ -438,7 +448,7 @@ Buffer-related functions
 
    Send a request to *exporter* to fill in *view* as specified by  *flags*.
    If the exporter cannot provide a buffer of the exact type, it MUST raise
-   :c:data:`PyExc_BufferError`, set ``view->obj`` to ``NULL`` and
+   :exc:`BufferError`, set ``view->obj`` to ``NULL`` and
    return ``-1``.
 
    On success, fill in *view*, set ``view->obj`` to a new reference
@@ -454,7 +464,8 @@ Buffer-related functions
 
 .. c:function:: void PyBuffer_Release(Py_buffer *view)
 
-   Release the buffer *view* and decrement the reference count for
+   Release the buffer *view* and release the :term:`strong reference`
+   (i.e. decrement the reference count) to the view's supporting object,
    ``view->obj``. This function MUST be called when the buffer
    is no longer being used, otherwise reference leaks may occur.
 
@@ -464,7 +475,7 @@ Buffer-related functions
 
 .. c:function:: Py_ssize_t PyBuffer_SizeFromFormat(const char *format)
 
-   Return the implied :c:data:`~Py_buffer.itemsize` from :c:data:`~Py_buffer.format`.
+   Return the implied :c:member:`~Py_buffer.itemsize` from :c:member:`~Py_buffer.format`.
    On error, raise an exception and return -1.
 
    .. versionadded:: 3.9
@@ -524,7 +535,7 @@ Buffer-related functions
    and :c:macro:`PyBUF_WRITABLE` is set in *flags*.
 
    On success, set ``view->obj`` to a new reference to *exporter* and
-   return 0. Otherwise, raise :c:data:`PyExc_BufferError`, set
+   return 0. Otherwise, raise :exc:`BufferError`, set
    ``view->obj`` to ``NULL`` and return ``-1``;
 
    If this function is used as part of a :ref:`getbufferproc <buffer-structs>`,
diff --git a/Doc/c-api/bytes.rst b/Doc/c-api/bytes.rst
index 9f48f2ffafe170..4790d3b2da4375 100644
--- a/Doc/c-api/bytes.rst
+++ b/Doc/c-api/bytes.rst
@@ -64,39 +64,39 @@ called with a non-bytes parameter.
    +-------------------+---------------+--------------------------------+
    | Format Characters | Type          | Comment                        |
    +===================+===============+================================+
-   | :attr:`%%`        | *n/a*         | The literal % character.       |
+   | ``%%``            | *n/a*         | The literal % character.       |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%c`        | int           | A single byte,                 |
+   | ``%c``            | int           | A single byte,                 |
    |                   |               | represented as a C int.        |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%d`        | int           | Equivalent to                  |
+   | ``%d``            | int           | Equivalent to                  |
    |                   |               | ``printf("%d")``. [1]_         |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%u`        | unsigned int  | Equivalent to                  |
+   | ``%u``            | unsigned int  | Equivalent to                  |
    |                   |               | ``printf("%u")``. [1]_         |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%ld`       | long          | Equivalent to                  |
+   | ``%ld``           | long          | Equivalent to                  |
    |                   |               | ``printf("%ld")``. [1]_        |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%lu`       | unsigned long | Equivalent to                  |
+   | ``%lu``           | unsigned long | Equivalent to                  |
    |                   |               | ``printf("%lu")``. [1]_        |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%zd`       | :c:type:`\    | Equivalent to                  |
+   | ``%zd``           | :c:type:`\    | Equivalent to                  |
    |                   | Py_ssize_t`   | ``printf("%zd")``. [1]_        |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%zu`       | size_t        | Equivalent to                  |
+   | ``%zu``           | size_t        | Equivalent to                  |
    |                   |               | ``printf("%zu")``. [1]_        |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%i`        | int           | Equivalent to                  |
+   | ``%i``            | int           | Equivalent to                  |
    |                   |               | ``printf("%i")``. [1]_         |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%x`        | int           | Equivalent to                  |
+   | ``%x``            | int           | Equivalent to                  |
    |                   |               | ``printf("%x")``. [1]_         |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%s`        | const char\*  | A null-terminated C character  |
+   | ``%s``            | const char\*  | A null-terminated C character  |
    |                   |               | array.                         |
    +-------------------+---------------+--------------------------------+
-   | :attr:`%p`        | const void\*  | The hex representation of a C  |
+   | ``%p``            | const void\*  | The hex representation of a C  |
    |                   |               | pointer. Mostly equivalent to  |
    |                   |               | ``printf("%p")`` except that   |
    |                   |               | it is guaranteed to start with |
@@ -155,6 +155,7 @@ called with a non-bytes parameter.
 
    Return the null-terminated contents of the object *obj*
    through the output variables *buffer* and *length*.
+   Returns ``0`` on success.
 
    If *length* is ``NULL``, the bytes object
    may not contain embedded null bytes;
@@ -184,8 +185,8 @@ called with a non-bytes parameter.
 .. c:function:: void PyBytes_ConcatAndDel(PyObject **bytes, PyObject *newpart)
 
    Create a new bytes object in *\*bytes* containing the contents of *newpart*
-   appended to *bytes*.  This version decrements the reference count of
-   *newpart*.
+   appended to *bytes*.  This version releases the :term:`strong reference`
+   to *newpart* (i.e. decrements its reference count).
 
 
 .. c:function:: int _PyBytes_Resize(PyObject **bytes, Py_ssize_t newsize)
diff --git a/Doc/c-api/call.rst b/Doc/c-api/call.rst
index 4dc66e318cd12e..7198d6bc056eb4 100644
--- a/Doc/c-api/call.rst
+++ b/Doc/c-api/call.rst
@@ -59,12 +59,12 @@ This bears repeating:
 
 .. versionchanged:: 3.12
 
-   The :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
+   The :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
    when the class's :py:meth:`~object.__call__` method is reassigned.
    (This internally sets :c:member:`~PyTypeObject.tp_call` only, and thus
    may make it behave differently than the vectorcall function.)
    In earlier Python versions, vectorcall should only be used with
-   :const:`immutable <Py_TPFLAGS_IMMUTABLETYPE>` or static types.
+   :c:macro:`immutable <Py_TPFLAGS_IMMUTABLETYPE>` or static types.
 
 A class should not implement vectorcall if that would be slower
 than *tp_call*. For example, if the callee needs to convert
@@ -72,7 +72,7 @@ the arguments to an args tuple and kwargs dict anyway, then there is no point
 in implementing vectorcall.
 
 Classes can implement the vectorcall protocol by enabling the
-:const:`Py_TPFLAGS_HAVE_VECTORCALL` flag and setting
+:c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag and setting
 :c:member:`~PyTypeObject.tp_vectorcall_offset` to the offset inside the
 object structure where a *vectorcallfunc* appears.
 This is a pointer to a function with the following signature:
@@ -84,7 +84,7 @@ This is a pointer to a function with the following signature:
    values of the keyword arguments.
    This can be *NULL* if there are no arguments.
 - *nargsf* is the number of positional arguments plus possibly the
-   :const:`PY_VECTORCALL_ARGUMENTS_OFFSET` flag.
+   :c:macro:`PY_VECTORCALL_ARGUMENTS_OFFSET` flag.
    To get the actual number of positional arguments from *nargsf*,
    use :c:func:`PyVectorcall_NARGS`.
 - *kwnames* is a tuple containing the names of the keyword arguments;
@@ -93,7 +93,7 @@ This is a pointer to a function with the following signature:
    and they must be unique.
    If there are no keyword arguments, then *kwnames* can instead be *NULL*.
 
-.. data:: PY_VECTORCALL_ARGUMENTS_OFFSET
+.. c:macro:: PY_VECTORCALL_ARGUMENTS_OFFSET
 
    If this flag is set in a vectorcall *nargsf* argument, the callee is allowed
    to temporarily change ``args[-1]``. In other words, *args* points to
@@ -104,28 +104,17 @@ This is a pointer to a function with the following signature:
    ``args[0]`` may be changed.
 
    Whenever they can do so cheaply (without additional allocation), callers
-   are encouraged to use :const:`PY_VECTORCALL_ARGUMENTS_OFFSET`.
+   are encouraged to use :c:macro:`PY_VECTORCALL_ARGUMENTS_OFFSET`.
    Doing so will allow callables such as bound methods to make their onward
    calls (which include a prepended *self* argument) very efficiently.
 
+   .. versionadded:: 3.8
+
 To call an object that implements vectorcall, use a :ref:`call API <capi-call>`
 function as with any other callable.
 :c:func:`PyObject_Vectorcall` will usually be most efficient.
 
 
-.. note::
-
-   In CPython 3.8, the vectorcall API and related functions were available
-   provisionally under names with a leading underscore:
-   ``_PyObject_Vectorcall``, ``_Py_TPFLAGS_HAVE_VECTORCALL``,
-   ``_PyObject_VectorcallMethod``, ``_PyVectorcall_Function``,
-   ``_PyObject_CallOneArg``, ``_PyObject_CallMethodNoArgs``,
-   ``_PyObject_CallMethodOneArg``.
-   Additionally, ``PyObject_VectorcallDict`` was available as
-   ``_PyObject_FastCallDict``.
-   The old names are still defined as aliases of the new, non-underscored names.
-
-
 Recursion Control
 .................
 
@@ -165,7 +154,7 @@ Vectorcall Support API
    This is mostly useful to check whether or not *op* supports vectorcall,
    which can be done by checking ``PyVectorcall_Function(op) != NULL``.
 
-   .. versionadded:: 3.8
+   .. versionadded:: 3.9
 
 .. c:function:: PyObject* PyVectorcall_Call(PyObject *callable, PyObject *tuple, PyObject *dict)
 
@@ -174,7 +163,7 @@ Vectorcall Support API
 
    This is a specialized function, intended to be put in the
    :c:member:`~PyTypeObject.tp_call` slot or be used in an implementation of ``tp_call``.
-   It does not check the :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag
+   It does not check the :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag
    and it does not fall back to ``tp_call``.
 
    .. versionadded:: 3.8
@@ -392,11 +381,11 @@ please see individual documentation for details.
    *args[0]*, and the *args* array starting at *args[1]* represents the arguments
    of the call. There must be at least one positional argument.
    *nargsf* is the number of positional arguments including *args[0]*,
-   plus :const:`PY_VECTORCALL_ARGUMENTS_OFFSET` if the value of ``args[0]`` may
+   plus :c:macro:`PY_VECTORCALL_ARGUMENTS_OFFSET` if the value of ``args[0]`` may
    temporarily be changed. Keyword arguments can be passed just like in
    :c:func:`PyObject_Vectorcall`.
 
-   If the object has the :const:`Py_TPFLAGS_METHOD_DESCRIPTOR` feature,
+   If the object has the :c:macro:`Py_TPFLAGS_METHOD_DESCRIPTOR` feature,
    this will call the unbound method object with the full
    *args* vector as arguments.
 
diff --git a/Doc/c-api/capsule.rst b/Doc/c-api/capsule.rst
index 427ed959c58568..cdb8aa33e9fd32 100644
--- a/Doc/c-api/capsule.rst
+++ b/Doc/c-api/capsule.rst
@@ -64,7 +64,7 @@ Refer to :ref:`using-capsules` for more information on using these objects.
 
    The *name* parameter must compare exactly to the name stored in the capsule.
    If the name stored in the capsule is ``NULL``, the *name* passed in must also
-   be ``NULL``.  Python uses the C function :c:func:`strcmp` to compare capsule
+   be ``NULL``.  Python uses the C function :c:func:`!strcmp` to compare capsule
    names.
 
 
@@ -121,7 +121,7 @@ Refer to :ref:`using-capsules` for more information on using these objects.
    compared.)
 
    In other words, if :c:func:`PyCapsule_IsValid` returns a true value, calls to
-   any of the accessors (any function starting with :c:func:`PyCapsule_Get`) are
+   any of the accessors (any function starting with ``PyCapsule_Get``) are
    guaranteed to succeed.
 
    Return a nonzero value if the object is valid and matches the name passed in.
diff --git a/Doc/c-api/cell.rst b/Doc/c-api/cell.rst
index ac4ef5adc5cc20..f8cd0344fdd1c0 100644
--- a/Doc/c-api/cell.rst
+++ b/Doc/c-api/cell.rst
@@ -25,7 +25,7 @@ Cell objects are not likely to be useful elsewhere.
    The type object corresponding to cell objects.
 
 
-.. c:function:: int PyCell_Check(ob)
+.. c:function:: int PyCell_Check(PyObject *ob)
 
    Return true if *ob* is a cell object; *ob* must not be ``NULL``.  This
    function always succeeds.
diff --git a/Doc/c-api/code.rst b/Doc/c-api/code.rst
index a99de9904c0740..5082b0cb6ad3f3 100644
--- a/Doc/c-api/code.rst
+++ b/Doc/c-api/code.rst
@@ -33,20 +33,20 @@ bound into a function.
 
    Return the number of free variables in *co*.
 
-.. c:function:: PyCodeObject* PyUnstable_Code_New(int argcount, int kwonlyargcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, int firstlineno, PyObject *linetable, PyObject *exceptiontable)
+.. c:function:: PyCodeObject* PyUnstable_Code_New(int argcount, int kwonlyargcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, PyObject *qualname, int firstlineno, PyObject *linetable, PyObject *exceptiontable)
 
    Return a new code object.  If you need a dummy code object to create a frame,
    use :c:func:`PyCode_NewEmpty` instead.
 
    Since the definition of the bytecode changes often, calling
-   :c:func:`PyCode_New` directly can bind you to a precise Python version.
+   :c:func:`PyUnstable_Code_New` directly can bind you to a precise Python version.
 
    The many arguments of this function are inter-dependent in complex
    ways, meaning that subtle changes to values are likely to result in incorrect
    execution or VM crashes. Use this function only with extreme care.
 
    .. versionchanged:: 3.11
-      Added ``exceptiontable`` parameter.
+      Added ``qualname`` and ``exceptiontable`` parameters.
 
    .. index:: single: PyCode_New
 
@@ -56,17 +56,17 @@ bound into a function.
       The old name is deprecated, but will remain available until the
       signature changes again.
 
-.. c:function:: PyCodeObject* PyUnstable_Code_NewWithPosOnlyArgs(int argcount, int posonlyargcount, int kwonlyargcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, int firstlineno, PyObject *linetable, PyObject *exceptiontable)
+.. c:function:: PyCodeObject* PyUnstable_Code_NewWithPosOnlyArgs(int argcount, int posonlyargcount, int kwonlyargcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, PyObject *qualname, int firstlineno, PyObject *linetable, PyObject *exceptiontable)
 
-   Similar to :c:func:`PyCode_New`, but with an extra "posonlyargcount" for positional-only arguments.
-   The same caveats that apply to ``PyCode_New`` also apply to this function.
+   Similar to :c:func:`PyUnstable_Code_New`, but with an extra "posonlyargcount" for positional-only arguments.
+   The same caveats that apply to ``PyUnstable_Code_New`` also apply to this function.
 
    .. index:: single: PyCode_NewWithPosOnlyArgs
 
    .. versionadded:: 3.8 as ``PyCode_NewWithPosOnlyArgs``
 
    .. versionchanged:: 3.11
-      Added ``exceptiontable`` parameter.
+      Added ``qualname`` and  ``exceptiontable`` parameters.
 
    .. versionchanged:: 3.12
 
diff --git a/Doc/c-api/codec.rst b/Doc/c-api/codec.rst
index 235c77c945cc5b..8ae5c4fecd6248 100644
--- a/Doc/c-api/codec.rst
+++ b/Doc/c-api/codec.rst
@@ -7,7 +7,7 @@ Codec registry and support functions
 
    Register a new codec search function.
 
-   As side effect, this tries to load the :mod:`encodings` package, if not yet
+   As side effect, this tries to load the :mod:`!encodings` package, if not yet
    done, to make sure that it is always first in the list of search functions.
 
 .. c:function:: int PyCodec_Unregister(PyObject *search_function)
diff --git a/Doc/c-api/complex.rst b/Doc/c-api/complex.rst
index 344da903da4c1a..e3fd001c599c80 100644
--- a/Doc/c-api/complex.rst
+++ b/Doc/c-api/complex.rst
@@ -64,7 +64,7 @@ pointers.  This is consistent throughout the API.
    representation.
 
    If *divisor* is null, this method returns zero and sets
-   :c:data:`errno` to :c:data:`EDOM`.
+   :c:data:`errno` to :c:macro:`!EDOM`.
 
 
 .. c:function:: Py_complex _Py_c_pow(Py_complex num, Py_complex exp)
@@ -73,7 +73,7 @@ pointers.  This is consistent throughout the API.
    representation.
 
    If *num* is null and *exp* is not a positive real number,
-   this method returns zero and sets :c:data:`errno` to :c:data:`EDOM`.
+   this method returns zero and sets :c:data:`errno` to :c:macro:`!EDOM`.
 
 
 Complex Numbers as Python Objects
@@ -127,12 +127,12 @@ Complex Numbers as Python Objects
 
    Return the :c:type:`Py_complex` value of the complex number *op*.
 
-   If *op* is not a Python complex number object but has a :meth:`__complex__`
+   If *op* is not a Python complex number object but has a :meth:`~object.__complex__`
    method, this method will first be called to convert *op* to a Python complex
-   number object.  If ``__complex__()`` is not defined then it falls back to
-   :meth:`__float__`.  If ``__float__()`` is not defined then it falls back
-   to :meth:`__index__`.  Upon failure, this method returns ``-1.0`` as a real
+   number object.  If :meth:`!__complex__` is not defined then it falls back to
+   :meth:`~object.__float__`.  If :meth:`!__float__` is not defined then it falls back
+   to :meth:`~object.__index__`.  Upon failure, this method returns ``-1.0`` as a real
    value.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
diff --git a/Doc/c-api/conversion.rst b/Doc/c-api/conversion.rst
index fdb321fe7ab3f2..c5350123dfdfdc 100644
--- a/Doc/c-api/conversion.rst
+++ b/Doc/c-api/conversion.rst
@@ -119,10 +119,10 @@ The following functions provide locale-independent string to number conversions.
 .. c:function:: int PyOS_stricmp(const char *s1, const char *s2)
 
    Case insensitive comparison of strings. The function works almost
-   identically to :c:func:`strcmp` except that it ignores the case.
+   identically to :c:func:`!strcmp` except that it ignores the case.
 
 
 .. c:function:: int PyOS_strnicmp(const char *s1, const char *s2, Py_ssize_t  size)
 
    Case insensitive comparison of strings. The function works almost
-   identically to :c:func:`strncmp` except that it ignores the case.
+   identically to :c:func:`!strncmp` except that it ignores the case.
diff --git a/Doc/c-api/datetime.rst b/Doc/c-api/datetime.rst
index 72fc07afbf1f4d..97522da773477e 100644
--- a/Doc/c-api/datetime.rst
+++ b/Doc/c-api/datetime.rst
@@ -8,11 +8,54 @@ DateTime Objects
 Various date and time objects are supplied by the :mod:`datetime` module.
 Before using any of these functions, the header file :file:`datetime.h` must be
 included in your source (note that this is not included by :file:`Python.h`),
-and the macro :c:macro:`PyDateTime_IMPORT` must be invoked, usually as part of
+and the macro :c:macro:`!PyDateTime_IMPORT` must be invoked, usually as part of
 the module initialisation function.  The macro puts a pointer to a C structure
-into a static variable, :c:data:`PyDateTimeAPI`, that is used by the following
+into a static variable, :c:data:`!PyDateTimeAPI`, that is used by the following
 macros.
 
+.. c:type:: PyDateTime_Date
+
+   This subtype of :c:type:`PyObject` represents a Python date object.
+
+.. c:type:: PyDateTime_DateTime
+
+   This subtype of :c:type:`PyObject` represents a Python datetime object.
+
+.. c:type:: PyDateTime_Time
+
+   This subtype of :c:type:`PyObject` represents a Python time object.
+
+.. c:type:: PyDateTime_Delta
+
+   This subtype of :c:type:`PyObject` represents the difference between two datetime values.
+
+.. c:var:: PyTypeObject PyDateTime_DateType
+
+   This instance of :c:type:`PyTypeObject` represents the Python date type;
+   it is the same object as :class:`datetime.date` in the Python layer.
+
+.. c:var:: PyTypeObject PyDateTime_DateTimeType
+
+   This instance of :c:type:`PyTypeObject` represents the Python datetime type;
+   it is the same object as :class:`datetime.datetime` in the Python layer.
+
+.. c:var:: PyTypeObject PyDateTime_TimeType
+
+   This instance of :c:type:`PyTypeObject` represents the Python time type;
+   it is the same object as :class:`datetime.time` in the Python layer.
+
+.. c:var:: PyTypeObject PyDateTime_DeltaType
+
+   This instance of :c:type:`PyTypeObject` represents Python type for
+   the difference between two datetime values;
+   it is the same object as :class:`datetime.timedelta` in the Python layer.
+
+.. c:var:: PyTypeObject PyDateTime_TZInfoType
+
+   This instance of :c:type:`PyTypeObject` represents the Python time zone info type;
+   it is the same object as :class:`datetime.tzinfo` in the Python layer.
+
+
 Macro for access to the UTC singleton:
 
 .. c:var:: PyObject* PyDateTime_TimeZone_UTC
@@ -28,7 +71,7 @@ Type-check macros:
 .. c:function:: int PyDate_Check(PyObject *ob)
 
    Return true if *ob* is of type :c:data:`PyDateTime_DateType` or a subtype of
-   :c:data:`PyDateTime_DateType`.  *ob* must not be ``NULL``.  This function always
+   :c:data:`!PyDateTime_DateType`.  *ob* must not be ``NULL``.  This function always
    succeeds.
 
 
@@ -41,7 +84,7 @@ Type-check macros:
 .. c:function:: int PyDateTime_Check(PyObject *ob)
 
    Return true if *ob* is of type :c:data:`PyDateTime_DateTimeType` or a subtype of
-   :c:data:`PyDateTime_DateTimeType`.  *ob* must not be ``NULL``.  This function always
+   :c:data:`!PyDateTime_DateTimeType`.  *ob* must not be ``NULL``.  This function always
    succeeds.
 
 
@@ -54,7 +97,7 @@ Type-check macros:
 .. c:function:: int PyTime_Check(PyObject *ob)
 
    Return true if *ob* is of type :c:data:`PyDateTime_TimeType` or a subtype of
-   :c:data:`PyDateTime_TimeType`.  *ob* must not be ``NULL``.  This function always
+   :c:data:`!PyDateTime_TimeType`.  *ob* must not be ``NULL``.  This function always
    succeeds.
 
 
@@ -67,7 +110,7 @@ Type-check macros:
 .. c:function:: int PyDelta_Check(PyObject *ob)
 
    Return true if *ob* is of type :c:data:`PyDateTime_DeltaType` or a subtype of
-   :c:data:`PyDateTime_DeltaType`.  *ob* must not be ``NULL``.  This function always
+   :c:data:`!PyDateTime_DeltaType`.  *ob* must not be ``NULL``.  This function always
    succeeds.
 
 
@@ -80,7 +123,7 @@ Type-check macros:
 .. c:function:: int PyTZInfo_Check(PyObject *ob)
 
    Return true if *ob* is of type :c:data:`PyDateTime_TZInfoType` or a subtype of
-   :c:data:`PyDateTime_TZInfoType`.  *ob* must not be ``NULL``.  This function always
+   :c:data:`!PyDateTime_TZInfoType`.  *ob* must not be ``NULL``.  This function always
    succeeds.
 
 
@@ -133,7 +176,7 @@ Macros to create objects:
    :class:`datetime.timedelta` objects.
 
 
-.. c:function:: PyObject* PyTimeZone_FromOffset(PyDateTime_DeltaType* offset)
+.. c:function:: PyObject* PyTimeZone_FromOffset(PyObject *offset)
 
    Return a :class:`datetime.timezone` object with an unnamed fixed offset
    represented by the *offset* argument.
@@ -141,7 +184,7 @@ Macros to create objects:
    .. versionadded:: 3.7
 
 
-.. c:function:: PyObject* PyTimeZone_FromOffsetAndName(PyDateTime_DeltaType* offset, PyUnicode* name)
+.. c:function:: PyObject* PyTimeZone_FromOffsetAndName(PyObject *offset, PyObject *name)
 
    Return a :class:`datetime.timezone` object with a fixed offset represented
    by the *offset* argument and with tzname *name*.
@@ -150,8 +193,8 @@ Macros to create objects:
 
 
 Macros to extract fields from date objects.  The argument must be an instance of
-:c:data:`PyDateTime_Date`, including subclasses (such as
-:c:data:`PyDateTime_DateTime`).  The argument must not be ``NULL``, and the type is
+:c:type:`PyDateTime_Date`, including subclasses (such as
+:c:type:`PyDateTime_DateTime`).  The argument must not be ``NULL``, and the type is
 not checked:
 
 .. c:function:: int PyDateTime_GET_YEAR(PyDateTime_Date *o)
@@ -170,7 +213,7 @@ not checked:
 
 
 Macros to extract fields from datetime objects.  The argument must be an
-instance of :c:data:`PyDateTime_DateTime`, including subclasses. The argument
+instance of :c:type:`PyDateTime_DateTime`, including subclasses. The argument
 must not be ``NULL``, and the type is not checked:
 
 .. c:function:: int PyDateTime_DATE_GET_HOUR(PyDateTime_DateTime *o)
@@ -208,7 +251,7 @@ must not be ``NULL``, and the type is not checked:
 
 
 Macros to extract fields from time objects.  The argument must be an instance of
-:c:data:`PyDateTime_Time`, including subclasses. The argument must not be ``NULL``,
+:c:type:`PyDateTime_Time`, including subclasses. The argument must not be ``NULL``,
 and the type is not checked:
 
 .. c:function:: int PyDateTime_TIME_GET_HOUR(PyDateTime_Time *o)
@@ -246,7 +289,7 @@ and the type is not checked:
 
 
 Macros to extract fields from time delta objects.  The argument must be an
-instance of :c:data:`PyDateTime_Delta`, including subclasses. The argument must
+instance of :c:type:`PyDateTime_Delta`, including subclasses. The argument must
 not be ``NULL``, and the type is not checked:
 
 .. c:function:: int PyDateTime_DELTA_GET_DAYS(PyDateTime_Delta *o)
diff --git a/Doc/c-api/dict.rst b/Doc/c-api/dict.rst
index 0ca8ad624b2034..8471c98d044872 100644
--- a/Doc/c-api/dict.rst
+++ b/Doc/c-api/dict.rst
@@ -55,6 +55,15 @@ Dictionary Objects
    This is equivalent to the Python expression ``key in p``.
 
 
+.. c:function:: int PyDict_ContainsString(PyObject *p, const char *key)
+
+   This is the same as :c:func:`PyDict_Contains`, but *key* is specified as a
+   :c:expr:`const char*` UTF-8 encoded bytes string, rather than a
+   :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: PyObject* PyDict_Copy(PyObject *p)
 
    Return a new dictionary that contains the same key-value pairs as *p*.
@@ -70,12 +79,9 @@ Dictionary Objects
 
 .. c:function:: int PyDict_SetItemString(PyObject *p, const char *key, PyObject *val)
 
-   .. index:: single: PyUnicode_FromString()
-
-   Insert *val* into the dictionary *p* using *key* as a key. *key* should
-   be a :c:expr:`const char*`.  The key object is created using
-   ``PyUnicode_FromString(key)``.  Return ``0`` on success or ``-1`` on
-   failure.  This function *does not* steal a reference to *val*.
+   This is the same as :c:func:`PyDict_SetItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
 
 
 .. c:function:: int PyDict_DelItem(PyObject *p, PyObject *key)
@@ -88,19 +94,37 @@ Dictionary Objects
 
 .. c:function:: int PyDict_DelItemString(PyObject *p, const char *key)
 
-   Remove the entry in dictionary *p* which has a key specified by the string *key*.
-   If *key* is not in the dictionary, :exc:`KeyError` is raised.
-   Return ``0`` on success or ``-1`` on failure.
+   This is the same as :c:func:`PyDict_DelItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+
+.. c:function:: int PyDict_GetItemRef(PyObject *p, PyObject *key, PyObject **result)
+
+   Return a new :term:`strong reference` to the object from dictionary *p*
+   which has a key *key*:
+
+   * If the key is present, set *\*result* to a new :term:`strong reference`
+     to the value and return ``1``.
+   * If the key is missing, set *\*result* to ``NULL`` and return ``0``.
+   * On error, raise an exception and return ``-1``.
+
+   .. versionadded:: 3.13
+
+   See also the :c:func:`PyObject_GetItem` function.
 
 
 .. c:function:: PyObject* PyDict_GetItem(PyObject *p, PyObject *key)
 
-   Return the object from dictionary *p* which has a key *key*.  Return ``NULL``
-   if the key *key* is not present, but *without* setting an exception.
+   Return a :term:`borrowed reference` to the object from dictionary *p* which
+   has a key *key*.  Return ``NULL`` if the key *key* is missing *without*
+   setting an exception.
+
+   .. note::
 
-   Note that exceptions which occur while calling :meth:`__hash__` and
-   :meth:`__eq__` methods will get suppressed.
-   To get error reporting use :c:func:`PyDict_GetItemWithError()` instead.
+      Exceptions that occur while this calls :meth:`~object.__hash__` and
+      :meth:`~object.__eq__` methods are silently ignored.
+      Prefer the :c:func:`PyDict_GetItemWithError` function instead.
 
    .. versionchanged:: 3.10
       Calling this API without :term:`GIL` held had been allowed for historical
@@ -118,12 +142,25 @@ Dictionary Objects
 .. c:function:: PyObject* PyDict_GetItemString(PyObject *p, const char *key)
 
    This is the same as :c:func:`PyDict_GetItem`, but *key* is specified as a
-   :c:expr:`const char*`, rather than a :c:expr:`PyObject*`.
+   :c:expr:`const char*` UTF-8 encoded bytes string, rather than a
+   :c:expr:`PyObject*`.
+
+   .. note::
 
-   Note that exceptions which occur while calling :meth:`__hash__` and
-   :meth:`__eq__` methods and creating a temporary string object
-   will get suppressed.
-   To get error reporting use :c:func:`PyDict_GetItemWithError()` instead.
+      Exceptions that occur while this calls :meth:`~object.__hash__` and
+      :meth:`~object.__eq__` methods or while creating the temporary :class:`str`
+      object are silently ignored.
+      Prefer using the :c:func:`PyDict_GetItemWithError` function with your own
+      :c:func:`PyUnicode_FromString` *key* instead.
+
+
+.. c:function:: int PyDict_GetItemStringRef(PyObject *p, const char *key, PyObject **result)
+
+   Similar than :c:func:`PyDict_GetItemRef`, but *key* is specified as a
+   :c:expr:`const char*` UTF-8 encoded bytes string, rather than a
+   :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
 
 
 .. c:function:: PyObject* PyDict_SetDefault(PyObject *p, PyObject *key, PyObject *defaultobj)
@@ -136,6 +173,33 @@ Dictionary Objects
 
    .. versionadded:: 3.4
 
+
+.. c:function:: int PyDict_Pop(PyObject *p, PyObject *key, PyObject **result)
+
+   Remove *key* from dictionary *p* and optionally return the removed value.
+   Do not raise :exc:`KeyError` if the key missing.
+
+   - If the key is present, set *\*result* to a new reference to the removed
+     value if *result* is not ``NULL``, and return ``1``.
+   - If the key is missing, set *\*result* to ``NULL`` if *result* is not
+     ``NULL``, and return ``0``.
+   - On error, raise an exception and return ``-1``.
+
+   This is similar to :meth:`dict.pop`, but without the default value and
+   not raising :exc:`KeyError` if the key missing.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyDict_PopString(PyObject *p, const char *key, PyObject **result)
+
+   Similar to :c:func:`PyDict_Pop`, but *key* is specified as a
+   :c:expr:`const char*` UTF-8 encoded bytes string, rather than a
+   :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: PyObject* PyDict_Items(PyObject *p)
 
    Return a :c:type:`PyListObject` containing all the items from the dictionary.
diff --git a/Doc/c-api/exceptions.rst b/Doc/c-api/exceptions.rst
index 4ed96f01dbbc3e..a3a63b38c432f2 100644
--- a/Doc/c-api/exceptions.rst
+++ b/Doc/c-api/exceptions.rst
@@ -60,9 +60,14 @@ Printing and clearing
    Call this function **only** when the error indicator is set.  Otherwise it
    will cause a fatal error!
 
-   If *set_sys_last_vars* is nonzero, the variables :data:`sys.last_type`,
-   :data:`sys.last_value` and :data:`sys.last_traceback` will be set to the
-   type, value and traceback of the printed exception, respectively.
+   If *set_sys_last_vars* is nonzero, the variable :data:`sys.last_exc` is
+   set to the printed exception. For backwards compatibility, the
+   deprecated variables :data:`sys.last_type`, :data:`sys.last_value` and
+   :data:`sys.last_traceback` are also set to the type, value and traceback
+   of this exception, respectively.
+
+   .. versionchanged:: 3.12
+      The setting of :data:`sys.last_exc` was added.
 
 
 .. c:function:: void PyErr_Print()
@@ -78,14 +83,34 @@ Printing and clearing
    This utility function prints a warning message to ``sys.stderr`` when an
    exception has been set but it is impossible for the interpreter to actually
    raise the exception.  It is used, for example, when an exception occurs in an
-   :meth:`__del__` method.
+   :meth:`~object.__del__` method.
 
    The function is called with a single argument *obj* that identifies the context
    in which the unraisable exception occurred. If possible,
    the repr of *obj* will be printed in the warning message.
+   If *obj* is ``NULL``, only the traceback is printed.
 
    An exception must be set when calling this function.
 
+   .. versionchanged:: 3.4
+      Print a traceback. Print only traceback if *obj* is ``NULL``.
+
+   .. versionchanged:: 3.8
+      Use :func:`sys.unraisablehook`.
+
+
+.. c:function:: void PyErr_FormatUnraisable(const char *format, ...)
+
+   Similar to :c:func:`PyErr_WriteUnraisable`, but the *format* and subsequent
+   parameters help format the warning message; they have the same meaning and
+   values as in :c:func:`PyUnicode_FromFormat`.
+   ``PyErr_WriteUnraisable(obj)`` is roughtly equivalent to
+   ``PyErr_FormatUnraisable("Exception ignored in: %R, obj)``.
+   If *format* is ``NULL``, only the traceback is printed.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: void PyErr_DisplayException(PyObject *exc)
 
    Print the standard traceback display of ``exc`` to ``sys.stderr``, including
@@ -93,6 +118,7 @@ Printing and clearing
 
    .. versionadded:: 3.12
 
+
 Raising exceptions
 ==================
 
@@ -105,7 +131,8 @@ For convenience, some of these functions will always return a
 
    This is the most common way to set the error indicator.  The first argument
    specifies the exception type; it is normally one of the standard exceptions,
-   e.g. :c:data:`PyExc_RuntimeError`.  You need not increment its reference count.
+   e.g. :c:data:`PyExc_RuntimeError`.  You need not create a new
+   :term:`strong reference` to it (e.g. with :c:func:`Py_INCREF`).
    The second argument is an error message; it is decoded from ``'utf-8'``.
 
 
@@ -158,9 +185,9 @@ For convenience, some of these functions will always return a
    This is a convenience function to raise an exception when a C library function
    has returned an error and set the C variable :c:data:`errno`.  It constructs a
    tuple object whose first item is the integer :c:data:`errno` value and whose
-   second item is the corresponding error message (gotten from :c:func:`strerror`),
+   second item is the corresponding error message (gotten from :c:func:`!strerror`),
    and then calls ``PyErr_SetObject(type, object)``.  On Unix, when the
-   :c:data:`errno` value is :const:`EINTR`, indicating an interrupted system call,
+   :c:data:`errno` value is :c:macro:`!EINTR`, indicating an interrupted system call,
    this calls :c:func:`PyErr_CheckSignals`, and if that set the error indicator,
    leaves it set to that.  The function always returns ``NULL``, so a wrapper
    function around a system call can write ``return PyErr_SetFromErrno(type);``
@@ -172,7 +199,7 @@ For convenience, some of these functions will always return a
    Similar to :c:func:`PyErr_SetFromErrno`, with the additional behavior that if
    *filenameObject* is not ``NULL``, it is passed to the constructor of *type* as
    a third parameter.  In the case of :exc:`OSError` exception,
-   this is used to define the :attr:`filename` attribute of the
+   this is used to define the :attr:`!filename` attribute of the
    exception instance.
 
 
@@ -195,12 +222,12 @@ For convenience, some of these functions will always return a
 .. c:function:: PyObject* PyErr_SetFromWindowsErr(int ierr)
 
    This is a convenience function to raise :exc:`WindowsError`. If called with
-   *ierr* of ``0``, the error code returned by a call to :c:func:`GetLastError`
-   is used instead.  It calls the Win32 function :c:func:`FormatMessage` to retrieve
-   the Windows description of error code given by *ierr* or :c:func:`GetLastError`,
+   *ierr* of ``0``, the error code returned by a call to :c:func:`!GetLastError`
+   is used instead.  It calls the Win32 function :c:func:`!FormatMessage` to retrieve
+   the Windows description of error code given by *ierr* or :c:func:`!GetLastError`,
    then it constructs a tuple object whose first item is the *ierr* value and whose
    second item is the corresponding error message (gotten from
-   :c:func:`FormatMessage`), and then calls ``PyErr_SetObject(PyExc_WindowsError,
+   :c:func:`!FormatMessage`), and then calls ``PyErr_SetObject(PyExc_WindowsError,
    object)``. This function always returns ``NULL``.
 
    .. availability:: Windows.
@@ -216,17 +243,21 @@ For convenience, some of these functions will always return a
 
 .. c:function:: PyObject* PyErr_SetFromWindowsErrWithFilename(int ierr, const char *filename)
 
-   Similar to :c:func:`PyErr_SetFromWindowsErrWithFilenameObject`, but the
-   filename is given as a C string.  *filename* is decoded from the filesystem
-   encoding (:func:`os.fsdecode`).
+   Similar to :c:func:`PyErr_SetFromWindowsErr`, with the additional behavior
+   that if *filename* is not ``NULL``, it is decoded from the filesystem
+   encoding (:func:`os.fsdecode`) and passed to the constructor of
+   :exc:`OSError` as a third parameter to be used to define the
+   :attr:`!filename` attribute of the exception instance.
 
    .. availability:: Windows.
 
 
 .. c:function:: PyObject* PyErr_SetExcFromWindowsErrWithFilenameObject(PyObject *type, int ierr, PyObject *filename)
 
-   Similar to :c:func:`PyErr_SetFromWindowsErrWithFilenameObject`, with an
-   additional parameter specifying the exception type to be raised.
+   Similar to :c:func:`PyErr_SetExcFromWindowsErr`, with the additional behavior
+   that if *filename* is not ``NULL``, it is passed to the constructor of
+   :exc:`OSError` as a third parameter to be used to define the
+   :attr:`!filename` attribute of the exception instance.
 
    .. availability:: Windows.
 
@@ -626,7 +657,7 @@ Signal Handling
    be interruptible by user requests (such as by pressing Ctrl-C).
 
    .. note::
-      The default Python signal handler for :const:`SIGINT` raises the
+      The default Python signal handler for :c:macro:`!SIGINT` raises the
       :exc:`KeyboardInterrupt` exception.
 
 
@@ -637,7 +668,7 @@ Signal Handling
       single: SIGINT
       single: KeyboardInterrupt (built-in exception)
 
-   Simulate the effect of a :const:`SIGINT` signal arriving.
+   Simulate the effect of a :c:macro:`!SIGINT` signal arriving.
    This is equivalent to ``PyErr_SetInterruptEx(SIGINT)``.
 
    .. note::
@@ -661,7 +692,7 @@ Signal Handling
    to interrupt an operation).
 
    If the given signal isn't handled by Python (it was set to
-   :data:`signal.SIG_DFL` or :data:`signal.SIG_IGN`), it will be ignored.
+   :py:const:`signal.SIG_DFL` or :py:const:`signal.SIG_IGN`), it will be ignored.
 
    If *signum* is outside of the allowed range of signal numbers, ``-1``
    is returned.  Otherwise, ``0`` is returned.  The error indicator is
@@ -749,7 +780,7 @@ Exception Objects
 
 .. c:function:: PyObject* PyException_GetCause(PyObject *ex)
 
-   Return the cause (either an exception instance, or :const:`None`,
+   Return the cause (either an exception instance, or ``None``,
    set by ``raise ... from ...``) associated with the exception as a new
    reference, as accessible from Python through :attr:`__cause__`.
 
@@ -758,7 +789,7 @@ Exception Objects
 
    Set the cause associated with the exception to *cause*.  Use ``NULL`` to clear
    it.  There is no type check to make sure that *cause* is either an exception
-   instance or :const:`None`.  This steals a reference to *cause*.
+   instance or ``None``.  This steals a reference to *cause*.
 
    :attr:`__suppress_context__` is implicitly set to ``True`` by this function.
 
@@ -772,6 +803,18 @@ Exception Objects
 
    Set :attr:`~BaseException.args` of exception *ex* to *args*.
 
+.. c:function:: PyObject* PyUnstable_Exc_PrepReraiseStar(PyObject *orig, PyObject *excs)
+
+   Implement part of the interpreter's implementation of :keyword:`!except*`.
+   *orig* is the original exception that was caught, and *excs* is the list of
+   the exceptions that need to be raised. This list contains the unhandled
+   part of *orig*, if any, as well as the exceptions that were raised from the
+   :keyword:`!except*` clauses (so they have a different traceback from *orig*) and
+   those that were reraised (and have the same traceback as *orig*).
+   Return the :exc:`ExceptionGroup` that needs to be reraised in the end, or
+   ``None`` if there is nothing to reraise.
+
+   .. versionadded:: 3.12
 
 .. _unicodeexceptions:
 
@@ -857,7 +900,7 @@ because the :ref:`call protocol <call>` takes care of recursion handling.
 
    Marks a point where a recursive C-level call is about to be performed.
 
-   If :const:`USE_STACKCHECK` is defined, this function checks if the OS
+   If :c:macro:`USE_STACKCHECK` is defined, this function checks if the OS
    stack overflowed using :c:func:`PyOS_CheckStack`.  In this is the case, it
    sets a :exc:`MemoryError` and returns a nonzero value.
 
@@ -870,7 +913,7 @@ because the :ref:`call protocol <call>` takes care of recursion handling.
    depth limit.
 
    .. versionchanged:: 3.9
-      This function is now also available in the limited API.
+      This function is now also available in the :ref:`limited API <limited-c-api>`.
 
 .. c:function:: void Py_LeaveRecursiveCall(void)
 
@@ -878,7 +921,7 @@ because the :ref:`call protocol <call>` takes care of recursion handling.
    *successful* invocation of :c:func:`Py_EnterRecursiveCall`.
 
    .. versionchanged:: 3.9
-      This function is now also available in the limited API.
+      This function is now also available in the :ref:`limited API <limited-c-api>`.
 
 Properly implementing :c:member:`~PyTypeObject.tp_repr` for container types requires
 special recursion handling.  In addition to protecting the stack,
diff --git a/Doc/c-api/file.rst b/Doc/c-api/file.rst
index f32ecba9f27029..b36c800e00444a 100644
--- a/Doc/c-api/file.rst
+++ b/Doc/c-api/file.rst
@@ -93,7 +93,7 @@ the :mod:`io` APIs instead.
    .. index:: single: Py_PRINT_RAW
 
    Write object *obj* to file object *p*.  The only supported flag for *flags* is
-   :const:`Py_PRINT_RAW`; if given, the :func:`str` of the object is written
+   :c:macro:`Py_PRINT_RAW`; if given, the :func:`str` of the object is written
    instead of the :func:`repr`.  Return ``0`` on success or ``-1`` on failure; the
    appropriate exception will be set.
 
diff --git a/Doc/c-api/float.rst b/Doc/c-api/float.rst
index 05b2d100d575cb..4f6ac0d8175c6b 100644
--- a/Doc/c-api/float.rst
+++ b/Doc/c-api/float.rst
@@ -3,7 +3,7 @@
 .. _floatobjects:
 
 Floating Point Objects
-----------------------
+======================
 
 .. index:: pair: object; floating point
 
@@ -45,14 +45,14 @@ Floating Point Objects
 .. c:function:: double PyFloat_AsDouble(PyObject *pyfloat)
 
    Return a C :c:expr:`double` representation of the contents of *pyfloat*.  If
-   *pyfloat* is not a Python floating point object but has a :meth:`__float__`
+   *pyfloat* is not a Python floating point object but has a :meth:`~object.__float__`
    method, this method will first be called to convert *pyfloat* into a float.
-   If ``__float__()`` is not defined then it falls back to :meth:`__index__`.
+   If :meth:`!__float__` is not defined then it falls back to :meth:`~object.__index__`.
    This method returns ``-1.0`` upon failure, so one should call
    :c:func:`PyErr_Occurred` to check for errors.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
 
 .. c:function:: double PyFloat_AS_DOUBLE(PyObject *pyfloat)
@@ -79,7 +79,7 @@ Floating Point Objects
 
 
 Pack and Unpack functions
-=========================
+-------------------------
 
 The pack and unpack functions provide an efficient platform-independent way to
 store floating-point values as byte strings. The Pack routines produce a bytes
@@ -104,12 +104,12 @@ happens in such cases is partly accidental (alas).
 .. versionadded:: 3.11
 
 Pack functions
---------------
+^^^^^^^^^^^^^^
 
 The pack routines write 2, 4 or 8 bytes, starting at *p*. *le* is an
 :c:expr:`int` argument, non-zero if you want the bytes string in little-endian
 format (exponent last, at ``p+1``, ``p+3``, or ``p+6`` ``p+7``), zero if you
-want big-endian format (exponent first, at *p*). The :c:data:`PY_BIG_ENDIAN`
+want big-endian format (exponent first, at *p*). The :c:macro:`PY_BIG_ENDIAN`
 constant can be used to use the native endian: it is equal to ``1`` on big
 endian processor, or ``0`` on little endian processor.
 
@@ -135,12 +135,12 @@ There are two problems on non-IEEE platforms:
 
 
 Unpack functions
-----------------
+^^^^^^^^^^^^^^^^
 
 The unpack routines read 2, 4 or 8 bytes, starting at *p*.  *le* is an
 :c:expr:`int` argument, non-zero if the bytes string is in little-endian format
 (exponent last, at ``p+1``, ``p+3`` or ``p+6`` and ``p+7``), zero if big-endian
-(exponent first, at *p*). The :c:data:`PY_BIG_ENDIAN` constant can be used to
+(exponent first, at *p*). The :c:macro:`PY_BIG_ENDIAN` constant can be used to
 use the native endian: it is equal to ``1`` on big endian processor, or ``0``
 on little endian processor.
 
diff --git a/Doc/c-api/frame.rst b/Doc/c-api/frame.rst
index 1ac8f03d6e48f8..6bb1e9b5803b58 100644
--- a/Doc/c-api/frame.rst
+++ b/Doc/c-api/frame.rst
@@ -50,7 +50,7 @@ See also :ref:`Reflection <reflection>`.
 
 .. c:function:: PyObject* PyFrame_GetBuiltins(PyFrameObject *frame)
 
-   Get the *frame*'s ``f_builtins`` attribute.
+   Get the *frame*'s :attr:`~frame.f_builtins` attribute.
 
    Return a :term:`strong reference`. The result cannot be ``NULL``.
 
@@ -81,7 +81,7 @@ See also :ref:`Reflection <reflection>`.
 
 .. c:function:: PyObject* PyFrame_GetGlobals(PyFrameObject *frame)
 
-   Get the *frame*'s ``f_globals`` attribute.
+   Get the *frame*'s :attr:`~frame.f_globals` attribute.
 
    Return a :term:`strong reference`. The result cannot be ``NULL``.
 
@@ -90,7 +90,7 @@ See also :ref:`Reflection <reflection>`.
 
 .. c:function:: int PyFrame_GetLasti(PyFrameObject *frame)
 
-   Get the *frame*'s ``f_lasti`` attribute.
+   Get the *frame*'s :attr:`~frame.f_lasti` attribute.
 
    Returns -1 if ``frame.f_lasti`` is ``None``.
 
@@ -120,7 +120,7 @@ See also :ref:`Reflection <reflection>`.
 
 .. c:function:: PyObject* PyFrame_GetLocals(PyFrameObject *frame)
 
-   Get the *frame*'s ``f_locals`` attribute (:class:`dict`).
+   Get the *frame*'s :attr:`~frame.f_locals` attribute (:class:`dict`).
 
    Return a :term:`strong reference`.
 
@@ -130,3 +130,38 @@ See also :ref:`Reflection <reflection>`.
 .. c:function:: int PyFrame_GetLineNumber(PyFrameObject *frame)
 
    Return the line number that *frame* is currently executing.
+
+
+
+Internal Frames
+^^^^^^^^^^^^^^^
+
+Unless using :pep:`523`, you will not need this.
+
+.. c:struct:: _PyInterpreterFrame
+
+   The interpreter's internal frame representation.
+
+   .. versionadded:: 3.11
+
+.. c:function:: PyObject* PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame);
+
+    Return a :term:`strong reference` to the code object for the frame.
+
+   .. versionadded:: 3.12
+
+
+.. c:function:: int PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame);
+
+   Return the byte offset into the last executed instruction.
+
+   .. versionadded:: 3.12
+
+
+.. c:function:: int PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame);
+
+   Return the currently executing line number, or -1 if there is no line number.
+
+   .. versionadded:: 3.12
+
+
diff --git a/Doc/c-api/function.rst b/Doc/c-api/function.rst
index 5857dba82c11c6..0a18e63c7e7a2c 100644
--- a/Doc/c-api/function.rst
+++ b/Doc/c-api/function.rst
@@ -37,7 +37,7 @@ There are a few functions specific to Python functions.
    The function's docstring and name are retrieved from the code object. *__module__*
    is retrieved from *globals*. The argument defaults, annotations and closure are
    set to ``NULL``. *__qualname__* is set to the same value as the code object's
-   ``co_qualname`` field.
+   :attr:`~codeobject.co_qualname` field.
 
 
 .. c:function:: PyObject* PyFunction_NewWithQualName(PyObject *code, PyObject *globals, PyObject *qualname)
@@ -45,7 +45,7 @@ There are a few functions specific to Python functions.
    As :c:func:`PyFunction_New`, but also allows setting the function object's
    ``__qualname__`` attribute.  *qualname* should be a unicode object or ``NULL``;
    if ``NULL``, the ``__qualname__`` attribute is set to the same value as the
-   code object's ``co_qualname`` field.
+   code object's :attr:`~codeobject.co_qualname` field.
 
    .. versionadded:: 3.3
 
diff --git a/Doc/c-api/gcsupport.rst b/Doc/c-api/gcsupport.rst
index c3260a21bc7f8b..6b2494ee4f0ed4 100644
--- a/Doc/c-api/gcsupport.rst
+++ b/Doc/c-api/gcsupport.rst
@@ -13,22 +13,20 @@ or strings), do not need to provide any explicit support for garbage
 collection.
 
 To create a container type, the :c:member:`~PyTypeObject.tp_flags` field of the type object must
-include the :const:`Py_TPFLAGS_HAVE_GC` and provide an implementation of the
+include the :c:macro:`Py_TPFLAGS_HAVE_GC` and provide an implementation of the
 :c:member:`~PyTypeObject.tp_traverse` handler.  If instances of the type are mutable, a
 :c:member:`~PyTypeObject.tp_clear` implementation must also be provided.
 
 
-.. data:: Py_TPFLAGS_HAVE_GC
-   :noindex:
-
+:c:macro:`Py_TPFLAGS_HAVE_GC`
    Objects with a type with this flag set must conform with the rules
    documented here.  For convenience these objects will be referred to as
    container objects.
 
 Constructors for container types must conform to two rules:
 
-#. The memory for the object must be allocated using :c:func:`PyObject_GC_New`
-   or :c:func:`PyObject_GC_NewVar`.
+#. The memory for the object must be allocated using :c:macro:`PyObject_GC_New`
+   or :c:macro:`PyObject_GC_NewVar`.
 
 #. Once all the fields which may contain references to other containers are
    initialized, it must call :c:func:`PyObject_GC_Track`.
@@ -52,21 +50,21 @@ rules:
       :c:member:`~PyTypeObject.tp_flags`, :c:member:`~PyTypeObject.tp_traverse`
       and :c:member:`~PyTypeObject.tp_clear` fields if the type inherits from a
       class that implements the garbage collector protocol and the child class
-      does *not* include the :const:`Py_TPFLAGS_HAVE_GC` flag.
+      does *not* include the :c:macro:`Py_TPFLAGS_HAVE_GC` flag.
 
-.. c:function:: TYPE* PyObject_GC_New(TYPE, PyTypeObject *type)
+.. c:macro:: PyObject_GC_New(TYPE, typeobj)
 
-   Analogous to :c:func:`PyObject_New` but for container objects with the
-   :const:`Py_TPFLAGS_HAVE_GC` flag set.
+   Analogous to :c:macro:`PyObject_New` but for container objects with the
+   :c:macro:`Py_TPFLAGS_HAVE_GC` flag set.
 
-.. c:function:: TYPE* PyObject_GC_NewVar(TYPE, PyTypeObject *type, Py_ssize_t size)
+.. c:macro:: PyObject_GC_NewVar(TYPE, typeobj, size)
 
-   Analogous to :c:func:`PyObject_NewVar` but for container objects with the
-   :const:`Py_TPFLAGS_HAVE_GC` flag set.
+   Analogous to :c:macro:`PyObject_NewVar` but for container objects with the
+   :c:macro:`Py_TPFLAGS_HAVE_GC` flag set.
 
 .. c:function:: PyObject* PyUnstable_Object_GC_NewWithExtraData(PyTypeObject *type, size_t extra_size)
 
-   Analogous to :c:func:`PyObject_GC_New` but allocates *extra_size*
+   Analogous to :c:macro:`PyObject_GC_New` but allocates *extra_size*
    bytes at the end of the object (at offset
    :c:member:`~PyTypeObject.tp_basicsize`).
    The allocated memory is initialized to zeros,
@@ -87,7 +85,7 @@ rules:
 
 .. c:function:: TYPE* PyObject_GC_Resize(TYPE, PyVarObject *op, Py_ssize_t newsize)
 
-   Resize an object allocated by :c:func:`PyObject_NewVar`.  Returns the
+   Resize an object allocated by :c:macro:`PyObject_NewVar`.  Returns the
    resized object or ``NULL`` on failure.  *op* must not be tracked by the collector yet.
 
 
@@ -130,8 +128,8 @@ rules:
 
 .. c:function:: void PyObject_GC_Del(void *op)
 
-   Releases memory allocated to an object using :c:func:`PyObject_GC_New` or
-   :c:func:`PyObject_GC_NewVar`.
+   Releases memory allocated to an object using :c:macro:`PyObject_GC_New` or
+   :c:macro:`PyObject_GC_NewVar`.
 
 
 .. c:function:: void PyObject_GC_UnTrack(void *op)
@@ -145,7 +143,7 @@ rules:
 
 .. versionchanged:: 3.8
 
-   The :c:func:`_PyObject_GC_TRACK` and :c:func:`_PyObject_GC_UNTRACK` macros
+   The :c:func:`!_PyObject_GC_TRACK` and :c:func:`!_PyObject_GC_UNTRACK` macros
    have been removed from the public C API.
 
 The :c:member:`~PyTypeObject.tp_traverse` handler accepts a function parameter of this type:
diff --git a/Doc/c-api/hash.rst b/Doc/c-api/hash.rst
new file mode 100644
index 00000000000000..91d88ae27bc9f4
--- /dev/null
+++ b/Doc/c-api/hash.rst
@@ -0,0 +1,61 @@
+.. highlight:: c
+
+PyHash API
+----------
+
+See also the :c:member:`PyTypeObject.tp_hash` member.
+
+.. c:type:: Py_hash_t
+
+   Hash value type: signed integer.
+
+   .. versionadded:: 3.2
+
+.. c:type:: Py_uhash_t
+
+   Hash value type: unsigned integer.
+
+   .. versionadded:: 3.2
+
+
+.. c:type:: PyHash_FuncDef
+
+   Hash function definition used by :c:func:`PyHash_GetFuncDef`.
+
+   .. c::member:: Py_hash_t (*const hash)(const void *, Py_ssize_t)
+
+      Hash function.
+
+   .. c:member:: const char *name
+
+      Hash function name (UTF-8 encoded string).
+
+   .. c:member:: const int hash_bits
+
+      Internal size of the hash value in bits.
+
+   .. c:member:: const int seed_bits
+
+      Size of seed input in bits.
+
+   .. versionadded:: 3.4
+
+
+.. c:function:: PyHash_FuncDef* PyHash_GetFuncDef(void)
+
+   Get the hash function definition.
+
+   .. seealso::
+      :pep:`456` "Secure and interchangeable hash algorithm".
+
+   .. versionadded:: 3.4
+
+
+.. c:function:: Py_hash_t Py_HashPointer(const void *ptr)
+
+   Hash a pointer value: process the pointer value as an integer (cast it to
+   ``uintptr_t`` internally). The pointer is not dereferenced.
+
+   The function cannot fail: it cannot return ``-1``.
+
+   .. versionadded:: 3.13
diff --git a/Doc/c-api/import.rst b/Doc/c-api/import.rst
index 79843ba521ab93..51c20b202f091c 100644
--- a/Doc/c-api/import.rst
+++ b/Doc/c-api/import.rst
@@ -38,6 +38,9 @@ Importing Modules
       to per-module locks for most purposes, so this function's special
       behaviour isn't needed anymore.
 
+   .. deprecated-removed:: 3.13 3.15
+      Use :c:func:`PyImport_ImportModule` instead.
+
 
 .. c:function:: PyObject* PyImport_ImportModuleEx(const char *name, PyObject *globals, PyObject *locals, PyObject *fromlist)
 
@@ -95,27 +98,40 @@ Importing Modules
    an exception set on failure (the module still exists in this case).
 
 
-.. c:function:: PyObject* PyImport_AddModuleObject(PyObject *name)
+.. c:function:: PyObject* PyImport_AddModuleRef(const char *name)
+
+   Return the module object corresponding to a module name.
+
+   The *name* argument may be of the form ``package.module``. First check the
+   modules dictionary if there's one there, and if not, create a new one and
+   insert it in the modules dictionary.
 
-   Return the module object corresponding to a module name.  The *name* argument
-   may be of the form ``package.module``. First check the modules dictionary if
-   there's one there, and if not, create a new one and insert it in the modules
-   dictionary. Return ``NULL`` with an exception set on failure.
+   Return a :term:`strong reference` to the module on success. Return ``NULL``
+   with an exception set on failure.
 
-   .. note::
+   The module name *name* is decoded from UTF-8.
 
-      This function does not load or import the module; if the module wasn't already
-      loaded, you will get an empty module object. Use :c:func:`PyImport_ImportModule`
-      or one of its variants to import a module.  Package structures implied by a
-      dotted name for *name* are not created if not already present.
+   This function does not load or import the module; if the module wasn't
+   already loaded, you will get an empty module object. Use
+   :c:func:`PyImport_ImportModule` or one of its variants to import a module.
+   Package structures implied by a dotted name for *name* are not created if
+   not already present.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: PyObject* PyImport_AddModuleObject(PyObject *name)
+
+   Similar to :c:func:`PyImport_AddModuleRef`, but return a :term:`borrowed
+   reference` and *name* is a Python :class:`str` object.
 
    .. versionadded:: 3.3
 
 
 .. c:function:: PyObject* PyImport_AddModule(const char *name)
 
-   Similar to :c:func:`PyImport_AddModuleObject`, but the name is a UTF-8
-   encoded string instead of a Unicode object.
+   Similar to :c:func:`PyImport_AddModuleRef`, but return a :term:`borrowed
+   reference`.
 
 
 .. c:function:: PyObject* PyImport_ExecCodeModule(const char *name, PyObject *co)
@@ -126,19 +142,19 @@ Importing Modules
    read from a Python bytecode file or obtained from the built-in function
    :func:`compile`, load the module.  Return a new reference to the module object,
    or ``NULL`` with an exception set if an error occurred.  *name*
-   is removed from :attr:`sys.modules` in error cases, even if *name* was already
-   in :attr:`sys.modules` on entry to :c:func:`PyImport_ExecCodeModule`.  Leaving
-   incompletely initialized modules in :attr:`sys.modules` is dangerous, as imports of
+   is removed from :data:`sys.modules` in error cases, even if *name* was already
+   in :data:`sys.modules` on entry to :c:func:`PyImport_ExecCodeModule`.  Leaving
+   incompletely initialized modules in :data:`sys.modules` is dangerous, as imports of
    such modules have no way to know that the module object is an unknown (and
    probably damaged with respect to the module author's intents) state.
 
    The module's :attr:`__spec__` and :attr:`__loader__` will be set, if
    not set already, with the appropriate values.  The spec's loader will
    be set to the module's ``__loader__`` (if set) and to an instance of
-   :class:`SourceFileLoader` otherwise.
+   :class:`~importlib.machinery.SourceFileLoader` otherwise.
 
    The module's :attr:`__file__` attribute will be set to the code object's
-   :c:member:`co_filename`.  If applicable, :attr:`__cached__` will also
+   :attr:`~codeobject.co_filename`.  If applicable, :attr:`__cached__` will also
    be set.
 
    This function will reload the module if it was already imported.  See
@@ -225,7 +241,7 @@ Importing Modules
 
 .. c:function:: PyObject* PyImport_GetImporter(PyObject *path)
 
-   Return a finder object for a :data:`sys.path`/:attr:`pkg.__path__` item
+   Return a finder object for a :data:`sys.path`/:attr:`!pkg.__path__` item
    *path*, possibly by fetching it from the :data:`sys.path_importer_cache`
    dict.  If it wasn't yet cached, traverse :data:`sys.path_hooks` until a hook
    is found that can handle the path item.  Return ``None`` if no hook could;
@@ -294,23 +310,25 @@ Importing Modules
 
 .. c:struct:: _inittab
 
-   Structure describing a single entry in the list of built-in modules.  Each of
-   these structures gives the name and initialization function for a module built
-   into the interpreter.  The name is an ASCII encoded string.  Programs which
+   Structure describing a single entry in the list of built-in modules.
+   Programs which
    embed Python may use an array of these structures in conjunction with
    :c:func:`PyImport_ExtendInittab` to provide additional built-in modules.
-   The structure is defined in :file:`Include/import.h` as::
+   The structure consists of two members:
 
-      struct _inittab {
-          const char *name;           /* ASCII encoded string */
-          PyObject* (*initfunc)(void);
-      };
+   .. c:member:: const char *name
+
+      The module name, as an ASCII encoded string.
+
+   .. c: member:: PyObject* (*initfunc)(void)
+
+      Initialization function for a module built into the interpreter.
 
 
 .. c:function:: int PyImport_ExtendInittab(struct _inittab *newtab)
 
    Add a collection of modules to the table of built-in modules.  The *newtab*
-   array must end with a sentinel entry which contains ``NULL`` for the :attr:`name`
+   array must end with a sentinel entry which contains ``NULL`` for the :c:member:`~_inittab.name`
    field; failure to provide the sentinel value can result in a memory fault.
    Returns ``0`` on success or ``-1`` if insufficient memory could be allocated to
    extend the internal table.  In the event of failure, no modules are added to the
diff --git a/Doc/c-api/init.rst b/Doc/c-api/init.rst
index 26762969ef8eba..f8fd48e781d6da 100644
--- a/Doc/c-api/init.rst
+++ b/Doc/c-api/init.rst
@@ -25,16 +25,10 @@ The following functions can be safely called before Python is initialized:
 
   * :c:func:`PyImport_AppendInittab`
   * :c:func:`PyImport_ExtendInittab`
-  * :c:func:`PyInitFrozenExtensions`
+  * :c:func:`!PyInitFrozenExtensions`
   * :c:func:`PyMem_SetAllocator`
   * :c:func:`PyMem_SetupDebugHooks`
   * :c:func:`PyObject_SetArenaAllocator`
-  * :c:func:`Py_SetPath`
-  * :c:func:`Py_SetProgramName`
-  * :c:func:`Py_SetPythonHome`
-  * :c:func:`Py_SetStandardStreamEncoding`
-  * :c:func:`PySys_AddWarnOption`
-  * :c:func:`PySys_AddXOption`
   * :c:func:`PySys_ResetWarnOptions`
 
 * Informative functions:
@@ -65,7 +59,7 @@ The following functions can be safely called before Python is initialized:
    :c:func:`Py_Initialize`: :c:func:`Py_EncodeLocale`, :c:func:`Py_GetPath`,
    :c:func:`Py_GetPrefix`, :c:func:`Py_GetExecPrefix`,
    :c:func:`Py_GetProgramFullPath`, :c:func:`Py_GetPythonHome`,
-   :c:func:`Py_GetProgramName` and :c:func:`PyEval_InitThreads`.
+   and :c:func:`Py_GetProgramName`.
 
 
 .. _global-conf-vars:
@@ -93,7 +87,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    Set by the :option:`-b` option.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_DebugFlag
 
@@ -107,7 +101,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-d` option and the :envvar:`PYTHONDEBUG` environment
    variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_DontWriteBytecodeFlag
 
@@ -121,7 +115,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-B` option and the :envvar:`PYTHONDONTWRITEBYTECODE`
    environment variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_FrozenFlag
 
@@ -134,7 +128,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    Private flag used by ``_freeze_module`` and ``frozenmain`` programs.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_HashRandomizationFlag
 
@@ -149,7 +143,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    If the flag is non-zero, read the :envvar:`PYTHONHASHSEED` environment
    variable to initialize the secret hash seed.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_IgnoreEnvironmentFlag
 
@@ -157,12 +151,12 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    :c:member:`PyConfig.use_environment` should be used instead, see
    :ref:`Python Initialization Configuration <init-config>`.
 
-   Ignore all :envvar:`PYTHON*` environment variables, e.g.
+   Ignore all :envvar:`!PYTHON*` environment variables, e.g.
    :envvar:`PYTHONPATH` and :envvar:`PYTHONHOME`, that might be set.
 
    Set by the :option:`-E` and :option:`-I` options.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_InspectFlag
 
@@ -177,7 +171,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-i` option and the :envvar:`PYTHONINSPECT` environment
    variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_InteractiveFlag
 
@@ -202,7 +196,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    .. versionadded:: 3.4
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_LegacyWindowsFSEncodingFlag
 
@@ -221,7 +215,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    .. availability:: Windows.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_LegacyWindowsStdioFlag
 
@@ -230,7 +224,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    :ref:`Python Initialization Configuration <init-config>`.
 
    If the flag is non-zero, use :class:`io.FileIO` instead of
-   :class:`WindowsConsoleIO` for :mod:`sys` standard streams.
+   :class:`!io._WindowsConsoleIO` for :mod:`sys` standard streams.
 
    Set to ``1`` if the :envvar:`PYTHONLEGACYWINDOWSSTDIO` environment
    variable is set to a non-empty string.
@@ -239,7 +233,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    .. availability:: Windows.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_NoSiteFlag
 
@@ -254,7 +248,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    Set by the :option:`-S` option.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_NoUserSiteDirectory
 
@@ -268,7 +262,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-s` and :option:`-I` options, and the
    :envvar:`PYTHONNOUSERSITE` environment variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_OptimizeFlag
 
@@ -279,7 +273,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-O` option and the :envvar:`PYTHONOPTIMIZE` environment
    variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_QuietFlag
 
@@ -293,7 +287,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
 
    .. versionadded:: 3.2
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_UnbufferedStdioFlag
 
@@ -306,7 +300,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-u` option and the :envvar:`PYTHONUNBUFFERED`
    environment variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 .. c:var:: int Py_VerboseFlag
 
@@ -322,7 +316,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
    Set by the :option:`-v` option and the :envvar:`PYTHONVERBOSE` environment
    variable.
 
-   .. deprecated:: 3.12
+   .. deprecated-removed:: 3.12 3.14
 
 
 Initializing and finalizing the interpreter
@@ -332,16 +326,12 @@ Initializing and finalizing the interpreter
 .. c:function:: void Py_Initialize()
 
    .. index::
-      single: Py_SetProgramName()
-      single: PyEval_InitThreads()
       single: modules (in module sys)
       single: path (in module sys)
       pair: module; builtins
       pair: module; __main__
       pair: module; sys
       triple: module; search; path
-      single: PySys_SetArgv()
-      single: PySys_SetArgvEx()
       single: Py_FinalizeEx()
 
    Initialize the Python interpreter.  In an application embedding  Python,
@@ -352,7 +342,9 @@ Initializing and finalizing the interpreter
    the table of loaded modules (``sys.modules``), and creates the fundamental
    modules :mod:`builtins`, :mod:`__main__` and :mod:`sys`.  It also initializes
    the module search path (``sys.path``). It does not set ``sys.argv``; use
-   :c:func:`PySys_SetArgvEx` for that.  This is a no-op when called for a second time
+   the new :c:type:`PyConfig` API of the :ref:`Python Initialization
+   Configuration <init-config>` for that.  This is a no-op when called for a
+   second time
    (without calling :c:func:`Py_FinalizeEx` first).  There is no return value; it is a
    fatal error if the initialization fails.
 
@@ -381,6 +373,14 @@ Initializing and finalizing the interpreter
    :c:func:`Py_Initialize` is called again.
 
 
+.. c:function:: int Py_IsFinalizing()
+
+   Return true (non-zero) if the main Python interpreter is
+   :term:`shutting down <interpreter shutdown>`. Return false (zero) otherwise.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: int Py_FinalizeEx()
 
    Undo all initializations made by :c:func:`Py_Initialize` and subsequent use of
@@ -401,7 +401,7 @@ Initializing and finalizing the interpreter
    the application.
 
    **Bugs and caveats:** The destruction of modules and objects in modules is done
-   in random order; this may cause destructors (:meth:`__del__` methods) to fail
+   in random order; this may cause destructors (:meth:`~object.__del__` methods) to fail
    when they depend on other objects (even functions) or modules.  Dynamically
    loaded extension modules loaded by Python are not unloaded.  Small amounts of
    memory allocated by the Python interpreter may not be freed (if you find a leak,
@@ -425,76 +425,9 @@ Process-wide parameters
 =======================
 
 
-.. c:function:: int Py_SetStandardStreamEncoding(const char *encoding, const char *errors)
-
-   .. index::
-      single: Py_Initialize()
-      single: main()
-      triple: stdin; stdout; sdterr
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.stdio_encoding` and :c:member:`PyConfig.stdio_errors`
-   should be used instead, see :ref:`Python Initialization Configuration
-   <init-config>`.
-
-   This function should be called before :c:func:`Py_Initialize`, if it is
-   called at all. It specifies which encoding and error handling to use
-   with standard IO, with the same meanings as in :func:`str.encode`.
-
-   It overrides :envvar:`PYTHONIOENCODING` values, and allows embedding code
-   to control IO encoding when the environment variable does not work.
-
-   *encoding* and/or *errors* may be ``NULL`` to use
-   :envvar:`PYTHONIOENCODING` and/or default values (depending on other
-   settings).
-
-   Note that :data:`sys.stderr` always uses the "backslashreplace" error
-   handler, regardless of this (or any other) setting.
-
-   If :c:func:`Py_FinalizeEx` is called, this function will need to be called
-   again in order to affect subsequent calls to :c:func:`Py_Initialize`.
-
-   Returns ``0`` if successful, a nonzero value on error (e.g. calling after the
-   interpreter has already been initialized).
+.. c:function:: wchar_t* Py_GetProgramName()
 
-   .. versionadded:: 3.4
-
-   .. deprecated:: 3.11
-
-
-.. c:function:: void Py_SetProgramName(const wchar_t *name)
-
-   .. index::
-      single: Py_Initialize()
-      single: main()
-      single: Py_GetPath()
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.program_name` should be used instead, see :ref:`Python
-   Initialization Configuration <init-config>`.
-
-   This function should be called before :c:func:`Py_Initialize` is called for
-   the first time, if it is called at all.  It tells the interpreter the value
-   of the ``argv[0]`` argument to the :c:func:`main` function of the program
-   (converted to wide characters).
-   This is used by :c:func:`Py_GetPath` and some other functions below to find
-   the Python run-time libraries relative to the interpreter executable.  The
-   default value is ``'python'``.  The argument should point to a
-   zero-terminated wide character string in static storage whose contents will not
-   change for the duration of the program's execution.  No code in the Python
-   interpreter will change the contents of this storage.
-
-   Use :c:func:`Py_DecodeLocale` to decode a bytes string to get a
-   :c:expr:`wchar_*` string.
-
-   .. deprecated:: 3.11
-
-
-.. c:function:: wchar* Py_GetProgramName()
-
-   .. index:: single: Py_SetProgramName()
-
-   Return the program name set with :c:func:`Py_SetProgramName`, or the default.
+   Return the program name set with :c:member:`PyConfig.program_name`, or the default.
    The returned string points into static storage; the caller should not modify its
    value.
 
@@ -504,12 +437,15 @@ Process-wide parameters
    .. versionchanged:: 3.10
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
+   .. deprecated-removed:: 3.13 3.15
+      Get :data:`sys.executable` instead.
+
 
 .. c:function:: wchar_t* Py_GetPrefix()
 
    Return the *prefix* for installed platform-independent files. This is derived
    through a number of complicated rules from the program name set with
-   :c:func:`Py_SetProgramName` and some environment variables; for example, if the
+   :c:member:`PyConfig.program_name` and some environment variables; for example, if the
    program name is ``'/usr/local/bin/python'``, the prefix is ``'/usr/local'``. The
    returned string points into static storage; the caller should not modify its
    value.  This corresponds to the :makevar:`prefix` variable in the top-level
@@ -523,12 +459,15 @@ Process-wide parameters
    .. versionchanged:: 3.10
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
+   .. deprecated-removed:: 3.13 3.15
+      Get :data:`sys.prefix` instead.
+
 
 .. c:function:: wchar_t* Py_GetExecPrefix()
 
    Return the *exec-prefix* for installed platform-*dependent* files.  This is
    derived through a number of complicated rules from the program name set with
-   :c:func:`Py_SetProgramName` and some environment variables; for example, if the
+   :c:member:`PyConfig.program_name` and some environment variables; for example, if the
    program name is ``'/usr/local/bin/python'``, the exec-prefix is
    ``'/usr/local'``.  The returned string points into static storage; the caller
    should not modify its value.  This corresponds to the :makevar:`exec_prefix`
@@ -564,16 +503,18 @@ Process-wide parameters
    .. versionchanged:: 3.10
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
+   .. deprecated-removed:: 3.13 3.15
+      Get :data:`sys.exec_prefix` instead.
+
 
 .. c:function:: wchar_t* Py_GetProgramFullPath()
 
    .. index::
-      single: Py_SetProgramName()
       single: executable (in module sys)
 
    Return the full program name of the Python executable; this is  computed as a
    side-effect of deriving the default module search path  from the program name
-   (set by :c:func:`Py_SetProgramName` above). The returned string points into
+   (set by :c:member:`PyConfig.program_name`). The returned string points into
    static storage; the caller should not modify its value.  The value is available
    to Python code as ``sys.executable``.
 
@@ -583,16 +524,18 @@ Process-wide parameters
    .. versionchanged:: 3.10
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
+   .. deprecated-removed:: 3.13 3.15
+      Get :data:`sys.executable` instead.
+
 
 .. c:function:: wchar_t* Py_GetPath()
 
    .. index::
       triple: module; search; path
       single: path (in module sys)
-      single: Py_SetPath()
 
    Return the default module search path; this is computed from the program name
-   (set by :c:func:`Py_SetProgramName` above) and some environment variables.
+   (set by :c:member:`PyConfig.program_name`) and some environment variables.
    The returned string consists of a series of directory names separated by a
    platform dependent delimiter character.  The delimiter character is ``':'``
    on Unix and macOS, ``';'`` on Windows.  The returned string points into
@@ -609,43 +552,8 @@ Process-wide parameters
    .. versionchanged:: 3.10
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
-
-.. c:function::  void Py_SetPath(const wchar_t *)
-
-   .. index::
-      triple: module; search; path
-      single: path (in module sys)
-      single: Py_GetPath()
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.module_search_paths` and
-   :c:member:`PyConfig.module_search_paths_set` should be used instead, see
-   :ref:`Python Initialization Configuration <init-config>`.
-
-   Set the default module search path.  If this function is called before
-   :c:func:`Py_Initialize`, then :c:func:`Py_GetPath` won't attempt to compute a
-   default search path but uses the one provided instead.  This is useful if
-   Python is embedded by an application that has full knowledge of the location
-   of all modules.  The path components should be separated by the platform
-   dependent delimiter character, which is ``':'`` on Unix and macOS, ``';'``
-   on Windows.
-
-   This also causes :data:`sys.executable` to be set to the program
-   full path (see :c:func:`Py_GetProgramFullPath`) and for :data:`sys.prefix` and
-   :data:`sys.exec_prefix` to be empty.  It is up to the caller to modify these
-   if required after calling :c:func:`Py_Initialize`.
-
-   Use :c:func:`Py_DecodeLocale` to decode a bytes string to get a
-   :c:expr:`wchar_*` string.
-
-   The path argument is copied internally, so the caller may free it after the
-   call completes.
-
-   .. versionchanged:: 3.8
-      The program full path is now used for :data:`sys.executable`, instead
-      of the program name.
-
-   .. deprecated:: 3.11
+   .. deprecated-removed:: 3.13 3.15
+      Get :data:`sys.path` instead.
 
 
 .. c:function:: const char* Py_GetVersion()
@@ -718,110 +626,10 @@ Process-wide parameters
    ``sys.version``.
 
 
-.. c:function:: void PySys_SetArgvEx(int argc, wchar_t **argv, int updatepath)
-
-   .. index::
-      single: main()
-      single: Py_FatalError()
-      single: argv (in module sys)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.argv`, :c:member:`PyConfig.parse_argv` and
-   :c:member:`PyConfig.safe_path` should be used instead, see :ref:`Python
-   Initialization Configuration <init-config>`.
-
-   Set :data:`sys.argv` based on *argc* and *argv*.  These parameters are
-   similar to those passed to the program's :c:func:`main` function with the
-   difference that the first entry should refer to the script file to be
-   executed rather than the executable hosting the Python interpreter.  If there
-   isn't a script that will be run, the first entry in *argv* can be an empty
-   string.  If this function fails to initialize :data:`sys.argv`, a fatal
-   condition is signalled using :c:func:`Py_FatalError`.
-
-   If *updatepath* is zero, this is all the function does.  If *updatepath*
-   is non-zero, the function also modifies :data:`sys.path` according to the
-   following algorithm:
-
-   - If the name of an existing script is passed in ``argv[0]``, the absolute
-     path of the directory where the script is located is prepended to
-     :data:`sys.path`.
-   - Otherwise (that is, if *argc* is ``0`` or ``argv[0]`` doesn't point
-     to an existing file name), an empty string is prepended to
-     :data:`sys.path`, which is the same as prepending the current working
-     directory (``"."``).
-
-   Use :c:func:`Py_DecodeLocale` to decode a bytes string to get a
-   :c:expr:`wchar_*` string.
-
-   See also :c:member:`PyConfig.orig_argv` and :c:member:`PyConfig.argv`
-   members of the :ref:`Python Initialization Configuration <init-config>`.
-
-   .. note::
-      It is recommended that applications embedding the Python interpreter
-      for purposes other than executing a single script pass ``0`` as *updatepath*,
-      and update :data:`sys.path` themselves if desired.
-      See `CVE-2008-5983 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5983>`_.
-
-      On versions before 3.1.3, you can achieve the same effect by manually
-      popping the first :data:`sys.path` element after having called
-      :c:func:`PySys_SetArgv`, for example using::
-
-         PyRun_SimpleString("import sys; sys.path.pop(0)\n");
-
-   .. versionadded:: 3.1.3
-
-   .. XXX impl. doesn't seem consistent in allowing ``0``/``NULL`` for the params;
-      check w/ Guido.
-
-   .. deprecated:: 3.11
-
-
-.. c:function:: void PySys_SetArgv(int argc, wchar_t **argv)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.argv` and :c:member:`PyConfig.parse_argv` should be used
-   instead, see :ref:`Python Initialization Configuration <init-config>`.
-
-   This function works like :c:func:`PySys_SetArgvEx` with *updatepath* set
-   to ``1`` unless the :program:`python` interpreter was started with the
-   :option:`-I`.
-
-   Use :c:func:`Py_DecodeLocale` to decode a bytes string to get a
-   :c:expr:`wchar_*` string.
-
-   See also :c:member:`PyConfig.orig_argv` and :c:member:`PyConfig.argv`
-   members of the :ref:`Python Initialization Configuration <init-config>`.
-
-   .. versionchanged:: 3.4 The *updatepath* value depends on :option:`-I`.
-
-   .. deprecated:: 3.11
-
-
-.. c:function:: void Py_SetPythonHome(const wchar_t *home)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.home` should be used instead, see :ref:`Python
-   Initialization Configuration <init-config>`.
-
-   Set the default "home" directory, that is, the location of the standard
-   Python libraries.  See :envvar:`PYTHONHOME` for the meaning of the
-   argument string.
-
-   The argument should point to a zero-terminated character string in static
-   storage whose contents will not change for the duration of the program's
-   execution.  No code in the Python interpreter will change the contents of
-   this storage.
-
-   Use :c:func:`Py_DecodeLocale` to decode a bytes string to get a
-   :c:expr:`wchar_*` string.
-
-   .. deprecated:: 3.11
-
-
 .. c:function:: wchar_t* Py_GetPythonHome()
 
-   Return the default "home", that is, the value set by a previous call to
-   :c:func:`Py_SetPythonHome`, or the value of the :envvar:`PYTHONHOME`
+   Return the default "home", that is, the value set by
+   :c:member:`PyConfig.home`, or the value of the :envvar:`PYTHONHOME`
    environment variable if it is set.
 
    This function should not be called before :c:func:`Py_Initialize`, otherwise
@@ -830,6 +638,10 @@ Process-wide parameters
    .. versionchanged:: 3.10
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
+   .. deprecated-removed:: 3.13 3.15
+      Get :c:member:`PyConfig.home` or :envvar:`PYTHONHOME` environment
+      variable instead.
+
 
 .. _threads:
 
@@ -981,7 +793,7 @@ the fork, and releasing them afterwards. In addition, it resets any
 :ref:`lock-objects` in the child. When extending or embedding Python, there
 is no way to inform Python of additional (non-Python) locks that need to be
 acquired before or reset after a fork. OS facilities such as
-:c:func:`pthread_atfork` would need to be used to accomplish the same thing.
+:c:func:`!pthread_atfork` would need to be used to accomplish the same thing.
 Additionally, when extending or embedding Python, calling :c:func:`fork`
 directly rather than through :func:`os.fork` (and returning to or calling
 into Python) may result in a deadlock by one of Python's internal locks
@@ -1023,47 +835,11 @@ code, or when embedding the Python interpreter:
 .. c:type:: PyThreadState
 
    This data structure represents the state of a single thread.  The only public
-   data member is :attr:`interp` (:c:expr:`PyInterpreterState *`), which points to
-   this thread's interpreter state.
+   data member is:
 
+   .. c:member:: PyInterpreterState *interp
 
-.. c:function:: void PyEval_InitThreads()
-
-   .. index::
-      single: PyEval_AcquireThread()
-      single: PyEval_ReleaseThread()
-      single: PyEval_SaveThread()
-      single: PyEval_RestoreThread()
-
-   Deprecated function which does nothing.
-
-   In Python 3.6 and older, this function created the GIL if it didn't exist.
-
-   .. versionchanged:: 3.9
-      The function now does nothing.
-
-   .. versionchanged:: 3.7
-      This function is now called by :c:func:`Py_Initialize()`, so you don't
-      have to call it yourself anymore.
-
-   .. versionchanged:: 3.2
-      This function cannot be called before :c:func:`Py_Initialize()` anymore.
-
-   .. deprecated:: 3.9
-
-   .. index:: pair: module; _thread
-
-
-.. c:function:: int PyEval_ThreadsInitialized()
-
-   Returns a non-zero value if :c:func:`PyEval_InitThreads` has been called.  This
-   function can be called without holding the GIL, and therefore can be used to
-   avoid calls to the locking API when running single-threaded.
-
-   .. versionchanged:: 3.7
-      The :term:`GIL` is now initialized by :c:func:`Py_Initialize()`.
-
-   .. deprecated:: 3.9
+      This thread's interpreter state.
 
 
 .. c:function:: PyThreadState* PyEval_SaveThread()
@@ -1084,7 +860,7 @@ code, or when embedding the Python interpreter:
    .. note::
       Calling this function from a thread when the runtime is finalizing
       will terminate the thread, even if the thread was not created by Python.
-      You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
+      You can use :c:func:`Py_IsFinalizing` or :func:`sys.is_finalizing` to
       check if the interpreter is in process of being finalized before calling
       this function to avoid unwanted termination.
 
@@ -1094,6 +870,19 @@ code, or when embedding the Python interpreter:
    When the current thread state is ``NULL``, this issues a fatal error (so that
    the caller needn't check for ``NULL``).
 
+   See also :c:func:`PyThreadState_GetUnchecked`.
+
+
+.. c:function:: PyThreadState* PyThreadState_GetUnchecked()
+
+   Similar to :c:func:`PyThreadState_Get`, but don't kill the process with a
+   fatal error if it is NULL. The caller is responsible to check if the result
+   is NULL.
+
+   .. versionadded:: 3.13
+      In Python 3.5 to 3.12, the function was private and known as
+      ``_PyThreadState_UncheckedGet()``.
+
 
 .. c:function:: PyThreadState* PyThreadState_Swap(PyThreadState *tstate)
 
@@ -1130,7 +919,7 @@ with sub-interpreters:
    .. note::
       Calling this function from a thread when the runtime is finalizing
       will terminate the thread, even if the thread was not created by Python.
-      You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
+      You can use :c:func:`Py_IsFinalizing` or :func:`sys.is_finalizing` to
       check if the interpreter is in process of being finalized before calling
       this function to avoid unwanted termination.
 
@@ -1396,7 +1185,7 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
    function does not steal any references to *exc*. To prevent naive misuse, you
    must write your own C extension to call this.  Must be called with the GIL held.
    Returns the number of thread states modified; this is normally one, but will be
-   zero if the thread id isn't found.  If *exc* is :const:`NULL`, the pending
+   zero if the thread id isn't found.  If *exc* is ``NULL``, the pending
    exception (if any) for the thread is cleared. This raises no exceptions.
 
    .. versionchanged:: 3.7
@@ -1412,7 +1201,7 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
    .. note::
       Calling this function from a thread when the runtime is finalizing
       will terminate the thread, even if the thread was not created by Python.
-      You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
+      You can use :c:func:`Py_IsFinalizing` or :func:`sys.is_finalizing` to
       check if the interpreter is in process of being finalized before calling
       this function to avoid unwanted termination.
 
@@ -1437,39 +1226,6 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
    available (even when threads have not been initialized).
 
 
-.. c:function:: void PyEval_AcquireLock()
-
-   Acquire the global interpreter lock.  The lock must have been created earlier.
-   If this thread already has the lock, a deadlock ensues.
-
-   .. deprecated:: 3.2
-      This function does not update the current thread state.  Please use
-      :c:func:`PyEval_RestoreThread` or :c:func:`PyEval_AcquireThread`
-      instead.
-
-   .. note::
-      Calling this function from a thread when the runtime is finalizing
-      will terminate the thread, even if the thread was not created by Python.
-      You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
-      check if the interpreter is in process of being finalized before calling
-      this function to avoid unwanted termination.
-
-   .. versionchanged:: 3.8
-      Updated to be consistent with :c:func:`PyEval_RestoreThread`,
-      :c:func:`Py_END_ALLOW_THREADS`, and :c:func:`PyGILState_Ensure`,
-      and terminate the current thread if called while the interpreter is finalizing.
-
-
-.. c:function:: void PyEval_ReleaseLock()
-
-   Release the global interpreter lock.  The lock must have been created earlier.
-
-   .. deprecated:: 3.2
-      This function does not update the current thread state.  Please use
-      :c:func:`PyEval_SaveThread` or :c:func:`PyEval_ReleaseThread`
-      instead.
-
-
 .. _sub-interpreter-support:
 
 Sub-interpreter support
@@ -1491,7 +1247,96 @@ You can switch between sub-interpreters using the :c:func:`PyThreadState_Swap`
 function. You can create and destroy them using the following functions:
 
 
-.. c:function:: PyThreadState* Py_NewInterpreter()
+.. c:type:: PyInterpreterConfig
+
+   Structure containing most parameters to configure a sub-interpreter.
+   Its values are used only in :c:func:`Py_NewInterpreterFromConfig` and
+   never modified by the runtime.
+
+   .. versionadded:: 3.12
+
+   Structure fields:
+
+   .. c:member:: int use_main_obmalloc
+
+      If this is ``0`` then the sub-interpreter will use its own
+      "object" allocator state.
+      Otherwise it will use (share) the main interpreter's.
+
+      If this is ``0`` then
+      :c:member:`~PyInterpreterConfig.check_multi_interp_extensions`
+      must be ``1`` (non-zero).
+      If this is ``1`` then :c:member:`~PyInterpreterConfig.gil`
+      must not be :c:macro:`PyInterpreterConfig_OWN_GIL`.
+
+   .. c:member:: int allow_fork
+
+      If this is ``0`` then the runtime will not support forking the
+      process in any thread where the sub-interpreter is currently active.
+      Otherwise fork is unrestricted.
+
+      Note that the :mod:`subprocess` module still works
+      when fork is disallowed.
+
+   .. c:member:: int allow_exec
+
+      If this is ``0`` then the runtime will not support replacing the
+      current process via exec (e.g. :func:`os.execv`) in any thread
+      where the sub-interpreter is currently active.
+      Otherwise exec is unrestricted.
+
+      Note that the :mod:`subprocess` module still works
+      when exec is disallowed.
+
+   .. c:member:: int allow_threads
+
+      If this is ``0`` then the sub-interpreter's :mod:`threading` module
+      won't create threads.
+      Otherwise threads are allowed.
+
+   .. c:member:: int allow_daemon_threads
+
+      If this is ``0`` then the sub-interpreter's :mod:`threading` module
+      won't create daemon threads.
+      Otherwise daemon threads are allowed (as long as
+      :c:member:`~PyInterpreterConfig.allow_threads` is non-zero).
+
+   .. c:member:: int check_multi_interp_extensions
+
+      If this is ``0`` then all extension modules may be imported,
+      including legacy (single-phase init) modules,
+      in any thread where the sub-interpreter is currently active.
+      Otherwise only multi-phase init extension modules
+      (see :pep:`489`) may be imported.
+      (Also see :c:macro:`Py_mod_multiple_interpreters`.)
+
+      This must be ``1`` (non-zero) if
+      :c:member:`~PyInterpreterConfig.use_main_obmalloc` is ``0``.
+
+   .. c:member:: int gil
+
+      This determines the operation of the GIL for the sub-interpreter.
+      It may be one of the following:
+
+      .. c:namespace:: NULL
+
+      .. c:macro:: PyInterpreterConfig_DEFAULT_GIL
+
+         Use the default selection (:c:macro:`PyInterpreterConfig_SHARED_GIL`).
+
+      .. c:macro:: PyInterpreterConfig_SHARED_GIL
+
+         Use (share) the main interpreter's GIL.
+
+      .. c:macro:: PyInterpreterConfig_OWN_GIL
+
+         Use the sub-interpreter's own GIL.
+
+      If this is :c:macro:`PyInterpreterConfig_OWN_GIL` then
+      :c:member:`PyInterpreterConfig.use_main_obmalloc` must be ``0``.
+
+
+.. c:function:: PyStatus Py_NewInterpreterFromConfig(PyThreadState **tstate_p, const PyInterpreterConfig *config)
 
    .. index::
       pair: module; builtins
@@ -1511,16 +1356,47 @@ function. You can create and destroy them using the following functions:
    ``sys.stdout`` and ``sys.stderr`` (however these refer to the same underlying
    file descriptors).
 
-   The return value points to the first thread state created in the new
+   The given *config* controls the options with which the interpreter
+   is initialized.
+
+   Upon success, *tstate_p* will be set to the first thread state
+   created in the new
    sub-interpreter.  This thread state is made in the current thread state.
    Note that no actual thread is created; see the discussion of thread states
-   below.  If creation of the new interpreter is unsuccessful, ``NULL`` is
-   returned; no exception is set since the exception state is stored in the
-   current thread state and there may not be a current thread state.  (Like all
-   other Python/C API functions, the global interpreter lock must be held before
-   calling this function and is still held when it returns; however, unlike most
-   other Python/C API functions, there needn't be a current thread state on
-   entry.)
+   below.  If creation of the new interpreter is unsuccessful,
+   *tstate_p* is set to ``NULL``;
+   no exception is set since the exception state is stored in the
+   current thread state and there may not be a current thread state.
+
+   Like all other Python/C API functions, the global interpreter lock
+   must be held before calling this function and is still held when it
+   returns.  Likewise a current thread state must be set on entry.  On
+   success, the returned thread state will be set as current.  If the
+   sub-interpreter is created with its own GIL then the GIL of the
+   calling interpreter will be released.  When the function returns,
+   the new interpreter's GIL will be held by the current thread and
+   the previously interpreter's GIL will remain released here.
+
+   .. versionadded:: 3.12
+
+   Sub-interpreters are most effective when isolated from each other,
+   with certain functionality restricted::
+
+      PyInterpreterConfig config = {
+          .use_main_obmalloc = 0,
+          .allow_fork = 0,
+          .allow_exec = 0,
+          .allow_threads = 1,
+          .allow_daemon_threads = 0,
+          .check_multi_interp_extensions = 1,
+          .gil = PyInterpreterConfig_OWN_GIL,
+      };
+      PyThreadState *tstate = Py_NewInterpreterFromConfig(&config);
+
+   Note that the config is used only briefly and does not get modified.
+   During initialization the config's values are converted into various
+   :c:type:`PyInterpreterState` values.  A read-only copy of the config
+   may be stored internally on the :c:type:`PyInterpreterState`.
 
    .. index::
       single: Py_FinalizeEx()
@@ -1555,19 +1431,79 @@ function. You can create and destroy them using the following functions:
    .. index:: single: close() (in module os)
 
 
+.. c:function:: PyThreadState* Py_NewInterpreter(void)
+
+   .. index::
+      pair: module; builtins
+      pair: module; __main__
+      pair: module; sys
+      single: stdout (in module sys)
+      single: stderr (in module sys)
+      single: stdin (in module sys)
+
+   Create a new sub-interpreter.  This is essentially just a wrapper
+   around :c:func:`Py_NewInterpreterFromConfig` with a config that
+   preserves the existing behavior.  The result is an unisolated
+   sub-interpreter that shares the main interpreter's GIL, allows
+   fork/exec, allows daemon threads, and allows single-phase init
+   modules.
+
+
 .. c:function:: void Py_EndInterpreter(PyThreadState *tstate)
 
    .. index:: single: Py_FinalizeEx()
 
-   Destroy the (sub-)interpreter represented by the given thread state. The given
-   thread state must be the current thread state.  See the discussion of thread
-   states below.  When the call returns, the current thread state is ``NULL``.  All
-   thread states associated with this interpreter are destroyed.  (The global
-   interpreter lock must be held before calling this function and is still held
-   when it returns.)  :c:func:`Py_FinalizeEx` will destroy all sub-interpreters that
+   Destroy the (sub-)interpreter represented by the given thread state.
+   The given thread state must be the current thread state.  See the
+   discussion of thread states below.  When the call returns,
+   the current thread state is ``NULL``.  All thread states associated
+   with this interpreter are destroyed.  The global interpreter lock
+   used by the target interpreter must be held before calling this
+   function.  No GIL is held when it returns.
+
+   :c:func:`Py_FinalizeEx` will destroy all sub-interpreters that
    haven't been explicitly destroyed at that point.
 
 
+A Per-Interpreter GIL
+---------------------
+
+Using :c:func:`Py_NewInterpreterFromConfig` you can create
+a sub-interpreter that is completely isolated from other interpreters,
+including having its own GIL.  The most important benefit of this
+isolation is that such an interpreter can execute Python code without
+being blocked by other interpreters or blocking any others.  Thus a
+single Python process can truly take advantage of multiple CPU cores
+when running Python code.  The isolation also encourages a different
+approach to concurrency than that of just using threads.
+(See :pep:`554`.)
+
+Using an isolated interpreter requires vigilance in preserving that
+isolation.  That especially means not sharing any objects or mutable
+state without guarantees about thread-safety.  Even objects that are
+otherwise immutable (e.g. ``None``, ``(1, 5)``) can't normally be shared
+because of the refcount.  One simple but less-efficient approach around
+this is to use a global lock around all use of some state (or object).
+Alternately, effectively immutable objects (like integers or strings)
+can be made safe in spite of their refcounts by making them :term:`immortal`.
+In fact, this has been done for the builtin singletons, small integers,
+and a number of other builtin objects.
+
+If you preserve isolation then you will have access to proper multi-core
+computing without the complications that come with free-threading.
+Failure to preserve isolation will expose you to the full consequences
+of free-threading, including races and hard-to-debug crashes.
+
+Aside from that, one of the main challenges of using multiple isolated
+interpreters is how to communicate between them safely (not break
+isolation) and efficiently.  The runtime and stdlib do not provide
+any standard approach to this yet.  A future stdlib module would help
+mitigate the effort of preserving isolation and expose effective tools
+for communicating (and sharing) data between interpreters.
+
+.. versionadded:: 3.12
+
+
 Bugs and caveats
 ----------------
 
@@ -1675,32 +1611,32 @@ Python-level trace functions in previous versions.
    The type of the trace function registered using :c:func:`PyEval_SetProfile` and
    :c:func:`PyEval_SetTrace`. The first parameter is the object passed to the
    registration function as *obj*, *frame* is the frame object to which the event
-   pertains, *what* is one of the constants :const:`PyTrace_CALL`,
-   :const:`PyTrace_EXCEPTION`, :const:`PyTrace_LINE`, :const:`PyTrace_RETURN`,
-   :const:`PyTrace_C_CALL`, :const:`PyTrace_C_EXCEPTION`, :const:`PyTrace_C_RETURN`,
-   or :const:`PyTrace_OPCODE`, and *arg* depends on the value of *what*:
-
-   +------------------------------+----------------------------------------+
-   | Value of *what*              | Meaning of *arg*                       |
-   +==============================+========================================+
-   | :const:`PyTrace_CALL`        | Always :c:data:`Py_None`.              |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_EXCEPTION`   | Exception information as returned by   |
-   |                              | :func:`sys.exc_info`.                  |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_LINE`        | Always :c:data:`Py_None`.              |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_RETURN`      | Value being returned to the caller,    |
-   |                              | or ``NULL`` if caused by an exception. |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_C_CALL`      | Function object being called.          |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_C_EXCEPTION` | Function object being called.          |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_C_RETURN`    | Function object being called.          |
-   +------------------------------+----------------------------------------+
-   | :const:`PyTrace_OPCODE`      | Always :c:data:`Py_None`.              |
-   +------------------------------+----------------------------------------+
+   pertains, *what* is one of the constants :c:data:`PyTrace_CALL`,
+   :c:data:`PyTrace_EXCEPTION`, :c:data:`PyTrace_LINE`, :c:data:`PyTrace_RETURN`,
+   :c:data:`PyTrace_C_CALL`, :c:data:`PyTrace_C_EXCEPTION`, :c:data:`PyTrace_C_RETURN`,
+   or :c:data:`PyTrace_OPCODE`, and *arg* depends on the value of *what*:
+
+   +-------------------------------+----------------------------------------+
+   | Value of *what*               | Meaning of *arg*                       |
+   +===============================+========================================+
+   | :c:data:`PyTrace_CALL`        | Always :c:data:`Py_None`.              |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_EXCEPTION`   | Exception information as returned by   |
+   |                               | :func:`sys.exc_info`.                  |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_LINE`        | Always :c:data:`Py_None`.              |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_RETURN`      | Value being returned to the caller,    |
+   |                               | or ``NULL`` if caused by an exception. |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_C_CALL`      | Function object being called.          |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_C_EXCEPTION` | Function object being called.          |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_C_RETURN`    | Function object being called.          |
+   +-------------------------------+----------------------------------------+
+   | :c:data:`PyTrace_OPCODE`      | Always :c:data:`Py_None`.              |
+   +-------------------------------+----------------------------------------+
 
 .. c:var:: int PyTrace_CALL
 
@@ -1726,7 +1662,8 @@ Python-level trace functions in previous versions.
 
    The value passed as the *what* parameter to a :c:type:`Py_tracefunc` function
    (but not a profiling function) when a line-number event is being reported.
-   It may be disabled for a frame by setting :attr:`f_trace_lines` to *0* on that frame.
+   It may be disabled for a frame by setting :attr:`~frame.f_trace_lines` to
+   *0* on that frame.
 
 
 .. c:var:: int PyTrace_RETURN
@@ -1758,7 +1695,7 @@ Python-level trace functions in previous versions.
    The value for the *what* parameter to :c:type:`Py_tracefunc` functions (but not
    profiling functions) when a new opcode is about to be executed.  This event is
    not emitted by default: it must be explicitly requested by setting
-   :attr:`f_trace_opcodes` to *1* on the frame.
+   :attr:`~frame.f_trace_opcodes` to *1* on the frame.
 
 
 .. c:function:: void PyEval_SetProfile(Py_tracefunc func, PyObject *obj)
@@ -1767,8 +1704,8 @@ Python-level trace functions in previous versions.
    function as its first parameter, and may be any Python object, or ``NULL``.  If
    the profile function needs to maintain state, using a different value for *obj*
    for each thread provides a convenient and thread-safe place to store it.  The
-   profile function is called for all monitored events except :const:`PyTrace_LINE`
-   :const:`PyTrace_OPCODE` and :const:`PyTrace_EXCEPTION`.
+   profile function is called for all monitored events except :c:data:`PyTrace_LINE`
+   :c:data:`PyTrace_OPCODE` and :c:data:`PyTrace_EXCEPTION`.
 
    See also the :func:`sys.setprofile` function.
 
@@ -1793,8 +1730,8 @@ Python-level trace functions in previous versions.
    :c:func:`PyEval_SetProfile`, except the tracing function does receive line-number
    events and per-opcode events, but does not receive any event related to C function
    objects being called.  Any trace function registered using :c:func:`PyEval_SetTrace`
-   will not receive :const:`PyTrace_C_CALL`, :const:`PyTrace_C_EXCEPTION` or
-   :const:`PyTrace_C_RETURN` as a value for the *what* parameter.
+   will not receive :c:data:`PyTrace_C_CALL`, :c:data:`PyTrace_C_EXCEPTION` or
+   :c:data:`PyTrace_C_RETURN` as a value for the *what* parameter.
 
    See also the :func:`sys.settrace` function.
 
diff --git a/Doc/c-api/init_config.rst b/Doc/c-api/init_config.rst
index 161def0b4baf3a..47a8fbb2cd9c97 100644
--- a/Doc/c-api/init_config.rst
+++ b/Doc/c-api/init_config.rst
@@ -82,6 +82,8 @@ PyWideStringList
    If *length* is non-zero, *items* must be non-``NULL`` and all strings must be
    non-``NULL``.
 
+   .. c:namespace:: NULL
+
    Methods:
 
    .. c:function:: PyStatus PyWideStringList_Append(PyWideStringList *list, const wchar_t *item)
@@ -101,6 +103,8 @@ PyWideStringList
 
       Python must be preinitialized to call this function.
 
+   .. c:namespace:: PyWideStringList
+
    Structure fields:
 
    .. c:member:: Py_ssize_t length
@@ -135,6 +139,8 @@ PyStatus
 
       Name of the function which created an error, can be ``NULL``.
 
+   .. c:namespace:: NULL
+
    Functions to create a status:
 
    .. c:function:: PyStatus PyStatus_Ok(void)
@@ -210,6 +216,8 @@ PyPreConfig
 
    Structure used to preinitialize Python.
 
+   .. c:namespace:: NULL
+
    Function to initialize a preconfiguration:
 
    .. c:function:: void PyPreConfig_InitPythonConfig(PyPreConfig *preconfig)
@@ -222,6 +230,8 @@ PyPreConfig
       Initialize the preconfiguration with :ref:`Isolated Configuration
       <init-isolated-conf>`.
 
+   .. c:namespace:: PyPreConfig
+
    Structure fields:
 
    .. c:member:: int allocator
@@ -243,11 +253,21 @@ PyPreConfig
       * ``PYMEM_ALLOCATOR_PYMALLOC_DEBUG`` (``6``): :ref:`Python pymalloc
         memory allocator <pymalloc>` with :ref:`debug hooks
         <pymem-debug-hooks>`.
+      * ``PYMEM_ALLOCATOR_MIMALLOC`` (``6``): use ``mimalloc``, a fast
+        malloc replacement.
+      * ``PYMEM_ALLOCATOR_MIMALLOC_DEBUG`` (``7``): use ``mimalloc``, a fast
+        malloc replacement with :ref:`debug hooks <pymem-debug-hooks>`.
+
 
       ``PYMEM_ALLOCATOR_PYMALLOC`` and ``PYMEM_ALLOCATOR_PYMALLOC_DEBUG`` are
       not supported if Python is :option:`configured using --without-pymalloc
       <--without-pymalloc>`.
 
+      ``PYMEM_ALLOCATOR_MIMALLOC`` and ``PYMEM_ALLOCATOR_MIMALLOC_DEBUG`` are
+      not supported if Python is :option:`configured using --without-mimalloc
+      <--without-mimalloc>` or if the underlying atomic support isn't
+      available.
+
       See :ref:`Memory Management <memory>`.
 
       Default: ``PYMEM_ALLOCATOR_NOT_SET``.
@@ -429,6 +449,8 @@ PyConfig
    When done, the :c:func:`PyConfig_Clear` function must be used to release the
    configuration memory.
 
+   .. c:namespace:: NULL
+
    Structure methods:
 
    .. c:function:: void PyConfig_InitPythonConfig(PyConfig *config)
@@ -522,16 +544,28 @@ PyConfig
    Moreover, if :c:func:`PyConfig_SetArgv` or :c:func:`PyConfig_SetBytesArgv`
    is used, this method must be called before other methods, since the
    preinitialization configuration depends on command line arguments (if
-   :c:member:`parse_argv` is non-zero).
+   :c:member:`~PyConfig.parse_argv` is non-zero).
 
    The caller of these methods is responsible to handle exceptions (error or
    exit) using ``PyStatus_Exception()`` and ``Py_ExitStatusException()``.
 
+   .. c:namespace:: PyConfig
+
    Structure fields:
 
    .. c:member:: PyWideStringList argv
 
-      Command line arguments: :data:`sys.argv`.
+      .. index::
+         single: main()
+         single: argv (in module sys)
+
+      Set :data:`sys.argv` command line arguments based on
+      :c:member:`~PyConfig.argv`.  These parameters are similar to those passed
+      to the program's :c:func:`main` function with the difference that the
+      first entry should refer to the script file to be executed rather than
+      the executable hosting the Python interpreter.  If there isn't a script
+      that will be run, the first entry in :c:member:`~PyConfig.argv` can be an
+      empty string.
 
       Set :c:member:`~PyConfig.parse_argv` to ``1`` to parse
       :c:member:`~PyConfig.argv` the same way the regular Python parses Python
@@ -572,6 +606,8 @@ PyConfig
 
       Part of the :ref:`Python Path Configuration <init-path-config>` output.
 
+      See also :c:member:`PyConfig.exec_prefix`.
+
    .. c:member:: wchar_t* base_executable
 
       Python base executable: :data:`sys._base_executable`.
@@ -584,6 +620,8 @@ PyConfig
 
       Part of the :ref:`Python Path Configuration <init-path-config>` output.
 
+      See also :c:member:`PyConfig.executable`.
+
    .. c:member:: wchar_t* base_prefix
 
       :data:`sys.base_prefix`.
@@ -592,6 +630,8 @@ PyConfig
 
       Part of the :ref:`Python Path Configuration <init-path-config>` output.
 
+      See also :c:member:`PyConfig.prefix`.
+
    .. c:member:: int buffered_stdio
 
       If equals to ``0`` and :c:member:`~PyConfig.configure_c_stdio` is non-zero,
@@ -686,7 +726,7 @@ PyConfig
 
       Set to ``1`` by the :envvar:`PYTHONDUMPREFS` environment variable.
 
-      Need a special build of Python with the ``Py_TRACE_REFS`` macro defined:
+      Needs a special build of Python with the ``Py_TRACE_REFS`` macro defined:
       see the :option:`configure --with-trace-refs option <--with-trace-refs>`.
 
       Default: ``0``.
@@ -700,6 +740,8 @@ PyConfig
 
       Part of the :ref:`Python Path Configuration <init-path-config>` output.
 
+      See also :c:member:`PyConfig.base_exec_prefix`.
+
    .. c:member:: wchar_t* executable
 
       The absolute path of the executable binary for the Python interpreter:
@@ -709,6 +751,8 @@ PyConfig
 
       Part of the :ref:`Python Path Configuration <init-path-config>` output.
 
+      See also :c:member:`PyConfig.base_executable`.
+
    .. c:member:: int faulthandler
 
       Enable faulthandler?
@@ -780,10 +824,8 @@ PyConfig
 
    .. c:member:: wchar_t* home
 
-      Python home directory.
-
-      If :c:func:`Py_SetPythonHome` has been called, use its argument if it is
-      not ``NULL``.
+      Set the default Python "home" directory, that is, the location of the
+      standard Python libraries (see :envvar:`PYTHONHOME`).
 
       Set by the :envvar:`PYTHONHOME` environment variable.
 
@@ -846,6 +888,19 @@ PyConfig
 
       .. versionadded:: 3.12
 
+   .. c:member:: int cpu_count
+
+      If the value of :c:member:`~PyConfig.cpu_count` is not ``-1`` then it will
+      override the return values of :func:`os.cpu_count`,
+      :func:`os.process_cpu_count`, and :func:`multiprocessing.cpu_count`.
+
+      Configured by the :samp:`-X cpu_count={n|default}` command line
+      flag or the :envvar:`PYTHON_CPU_COUNT` environment variable.
+
+      Default: ``-1``.
+
+      .. versionadded:: 3.13
+
    .. c:member:: int isolated
 
       If greater than ``0``, enable isolated mode:
@@ -871,7 +926,7 @@ PyConfig
    .. c:member:: int legacy_windows_stdio
 
       If non-zero, use :class:`io.FileIO` instead of
-      :class:`io.WindowsConsoleIO` for :data:`sys.stdin`, :data:`sys.stdout`
+      :class:`!io._WindowsConsoleIO` for :data:`sys.stdin`, :data:`sys.stdout`
       and :data:`sys.stderr`.
 
       Set to ``1`` if the :envvar:`PYTHONLEGACYWINDOWSSTDIO` environment
@@ -920,7 +975,7 @@ PyConfig
    .. c:member:: wchar_t* pythonpath_env
 
       Module search paths (:data:`sys.path`) as a string separated by ``DELIM``
-      (:data:`os.path.pathsep`).
+      (:data:`os.pathsep`).
 
       Set by the :envvar:`PYTHONPATH` environment variable.
 
@@ -1003,7 +1058,7 @@ PyConfig
       Incremented by the :option:`-d` command line option. Set to the
       :envvar:`PYTHONDEBUG` environment variable value.
 
-      Need a :ref:`debug build of Python <debug-build>` (the ``Py_DEBUG`` macro
+      Needs a :ref:`debug build of Python <debug-build>` (the ``Py_DEBUG`` macro
       must be defined).
 
       Default: ``0``.
@@ -1029,12 +1084,13 @@ PyConfig
 
       Part of the :ref:`Python Path Configuration <init-path-config>` output.
 
+      See also :c:member:`PyConfig.base_prefix`.
+
    .. c:member:: wchar_t* program_name
 
       Program name used to initialize :c:member:`~PyConfig.executable` and in
       early error messages during Python initialization.
 
-      * If :func:`Py_SetProgramName` has been called, use its argument.
       * On macOS, use :envvar:`PYTHONEXECUTABLE` environment variable if set.
       * If the ``WITH_NEXT_FRAMEWORK`` macro is defined, use
         :envvar:`__PYVENV_LAUNCHER__` environment variable if set.
@@ -1054,6 +1110,7 @@ PyConfig
 
       Set by the :option:`-X pycache_prefix=PATH <-X>` command line option and
       the :envvar:`PYTHONPYCACHEPREFIX` environment variable.
+      The command-line option takes precedence.
 
       If ``NULL``, :data:`sys.pycache_prefix` is set to ``None``.
 
@@ -1097,13 +1154,27 @@ PyConfig
 
       Default: ``NULL``.
 
+   .. c:member:: wchar_t* run_presite
+
+      ``package.module`` path to module that should be imported before
+      ``site.py`` is run.
+
+      Set by the :option:`-X presite=package.module <-X>` command-line
+      option and the :envvar:`PYTHON_PRESITE` environment variable.
+      The command-line option takes precedence.
+
+      Needs a :ref:`debug build of Python <debug-build>` (the ``Py_DEBUG`` macro
+      must be defined).
+
+      Default: ``NULL``.
+
    .. c:member:: int show_ref_count
 
-      Show total reference count at exit?
+      Show total reference count at exit (excluding :term:`immortal` objects)?
 
       Set to ``1`` by :option:`-X showrefcount <-X>` command line option.
 
-      Need a :ref:`debug build of Python <debug-build>` (the ``Py_REF_DEBUG``
+      Needs a :ref:`debug build of Python <debug-build>` (the ``Py_REF_DEBUG``
       macro must be defined).
 
       Default: ``0``.
@@ -1120,7 +1191,7 @@ PyConfig
 
       Set to ``0`` by the :option:`-S` command line option.
 
-      :data:`sys.flags.no_site` is set to the inverted value of
+      :data:`sys.flags.no_site <sys.flags>` is set to the inverted value of
       :c:member:`~PyConfig.site_import`.
 
       Default: ``1``.
@@ -1144,9 +1215,6 @@ PyConfig
       :data:`sys.stderr` (but :data:`sys.stderr` always uses
       ``"backslashreplace"`` error handler).
 
-      If :c:func:`Py_SetStandardStreamEncoding` has been called, use its
-      *error* and *errors* arguments if they are not ``NULL``.
-
       Use the :envvar:`PYTHONIOENCODING` environment variable if it is
       non-empty.
 
@@ -1162,6 +1230,8 @@ PyConfig
         or if the LC_CTYPE locale is "C" or "POSIX".
       * ``"strict"`` otherwise.
 
+      See also :c:member:`PyConfig.legacy_windows_stdio`.
+
    .. c:member:: int tracemalloc
 
       Enable tracemalloc?
@@ -1509,7 +1579,7 @@ If a ``._pth`` file is present:
 * Set :c:member:`~PyConfig.safe_path` to ``1``.
 
 The ``__PYVENV_LAUNCHER__`` environment variable is used to set
-:c:member:`PyConfig.base_executable`
+:c:member:`PyConfig.base_executable`.
 
 
 Py_RunMain()
diff --git a/Doc/c-api/intro.rst b/Doc/c-api/intro.rst
index 8de76e55cd0586..4dbca92b18b5cd 100644
--- a/Doc/c-api/intro.rst
+++ b/Doc/c-api/intro.rst
@@ -105,6 +105,30 @@ defined closer to where they are useful (e.g. :c:macro:`Py_RETURN_NONE`).
 Others of a more general utility are defined here.  This is not necessarily a
 complete listing.
 
+.. c:macro:: PyMODINIT_FUNC
+
+   Declare an extension module ``PyInit`` initialization function. The function
+   return type is :c:expr:`PyObject*`. The macro declares any special linkage
+   declarations required by the platform, and for C++ declares the function as
+   ``extern "C"``.
+
+   The initialization function must be named :samp:`PyInit_{name}`, where
+   *name* is the name of the module, and should be the only non-\ ``static``
+   item defined in the module file. Example::
+
+       static struct PyModuleDef spam_module = {
+           PyModuleDef_HEAD_INIT,
+           .m_name = "spam",
+           ...
+       };
+
+       PyMODINIT_FUNC
+       PyInit_spam(void)
+       {
+           return PyModule_Create(&spam_module);
+       }
+
+
 .. c:macro:: Py_ABS(x)
 
    Return the absolute value of ``x``.
@@ -287,52 +311,58 @@ true if (and only if) the object pointed to by *a* is a Python list.
 Reference Counts
 ----------------
 
-The reference count is important because today's computers have a  finite (and
-often severely limited) memory size; it counts how many  different places there
-are that have a reference to an object.  Such a  place could be another object,
-or a global (or static) C variable, or  a local variable in some C function.
-When an object's reference count  becomes zero, the object is deallocated.  If
-it contains references to  other objects, their reference count is decremented.
-Those other  objects may be deallocated in turn, if this decrement makes their
-reference count become zero, and so on.  (There's an obvious problem  with
-objects that reference each other here; for now, the solution is  "don't do
-that.")
+The reference count is important because today's computers have a  finite
+(and often severely limited) memory size; it counts how many different
+places there are that have a :term:`strong reference` to an object.
+Such a place could be another object, or a global (or static) C variable,
+or a local variable in some C function.
+When the last :term:`strong reference` to an object is released
+(i.e. its reference count becomes zero), the object is deallocated.
+If it contains references to other objects, those references are released.
+Those other objects may be deallocated in turn, if there are no more
+references to them, and so on.  (There's an obvious problem  with
+objects that reference each other here; for now, the solution
+is "don't do that.")
 
 .. index::
    single: Py_INCREF()
    single: Py_DECREF()
 
-Reference counts are always manipulated explicitly.  The normal way is  to use
-the macro :c:func:`Py_INCREF` to increment an object's reference count by one,
-and :c:func:`Py_DECREF` to decrement it by   one.  The :c:func:`Py_DECREF` macro
+Reference counts are always manipulated explicitly.  The normal way is
+to use the macro :c:func:`Py_INCREF` to take a new reference to an
+object (i.e. increment its reference count by one),
+and :c:func:`Py_DECREF` to release that reference (i.e. decrement the
+reference count by one).  The :c:func:`Py_DECREF` macro
 is considerably more complex than the incref one, since it must check whether
 the reference count becomes zero and then cause the object's deallocator to be
-called. The deallocator is a function pointer contained in the object's type
-structure.  The type-specific deallocator takes care of decrementing the
-reference counts for other objects contained in the object if this is a compound
+called.  The deallocator is a function pointer contained in the object's type
+structure.  The type-specific deallocator takes care of releasing references
+for other objects contained in the object if this is a compound
 object type, such as a list, as well as performing any additional finalization
 that's needed.  There's no chance that the reference count can overflow; at
 least as many bits are used to hold the reference count as there are distinct
 memory locations in virtual memory (assuming ``sizeof(Py_ssize_t) >= sizeof(void*)``).
 Thus, the reference count increment is a simple operation.
 
-It is not necessary to increment an object's reference count for every  local
-variable that contains a pointer to an object.  In theory, the  object's
+It is not necessary to hold a :term:`strong reference` (i.e. increment
+the reference count) for every local variable that contains a pointer
+to an object.  In theory, the  object's
 reference count goes up by one when the variable is made to  point to it and it
 goes down by one when the variable goes out of  scope.  However, these two
 cancel each other out, so at the end the  reference count hasn't changed.  The
 only real reason to use the  reference count is to prevent the object from being
 deallocated as  long as our variable is pointing to it.  If we know that there
 is at  least one other reference to the object that lives at least as long as
-our variable, there is no need to increment the reference count  temporarily.
+our variable, there is no need to take a new :term:`strong reference`
+(i.e. increment the reference count) temporarily.
 An important situation where this arises is in objects  that are passed as
 arguments to C functions in an extension module  that are called from Python;
 the call mechanism guarantees to hold a  reference to every argument for the
 duration of the call.
 
 However, a common pitfall is to extract an object from a list and hold on to it
-for a while without incrementing its reference count. Some other operation might
-conceivably remove the object from the list, decrementing its reference count
+for a while without taking a new reference.  Some other operation might
+conceivably remove the object from the list, releasing that reference,
 and possibly deallocating it. The real danger is that innocent-looking
 operations may invoke arbitrary Python code which could do this; there is a code
 path which allows control to flow back to the user from a :c:func:`Py_DECREF`, so
@@ -340,7 +370,8 @@ almost any operation is potentially dangerous.
 
 A safe approach is to always use the generic operations (functions  whose name
 begins with ``PyObject_``, ``PyNumber_``, ``PySequence_`` or ``PyMapping_``).
-These operations always increment the reference count of the object they return.
+These operations always create a new :term:`strong reference`
+(i.e. increment the reference count) of the object they return.
 This leaves the caller with the responsibility to call :c:func:`Py_DECREF` when
 they are done with the result; this soon becomes second nature.
 
@@ -356,7 +387,7 @@ to objects (objects are not owned: they are always shared).  "Owning a
 reference" means being responsible for calling Py_DECREF on it when the
 reference is no longer needed.  Ownership can also be transferred, meaning that
 the code that receives ownership of the reference then becomes responsible for
-eventually decref'ing it by calling :c:func:`Py_DECREF` or :c:func:`Py_XDECREF`
+eventually releasing it by calling :c:func:`Py_DECREF` or :c:func:`Py_XDECREF`
 when it's no longer needed---or passing on this responsibility (usually to its
 caller). When a function passes ownership of a reference on to its caller, the
 caller is said to receive a *new* reference.  When no ownership is transferred,
@@ -414,9 +445,9 @@ For example, the above two blocks of code could be replaced by the following
 
 It is much more common to use :c:func:`PyObject_SetItem` and friends with items
 whose references you are only borrowing, like arguments that were passed in to
-the function you are writing.  In that case, their behaviour regarding reference
-counts is much saner, since you don't have to increment a reference count so you
-can give a reference away ("have it be stolen").  For example, this function
+the function you are writing.  In that case, their behaviour regarding references
+is much saner, since you don't have to take a new reference just so you
+can give that reference away ("have it be stolen").  For example, this function
 sets all items of a list (actually, any mutable sequence) to a given item::
 
    int
@@ -616,7 +647,7 @@ and lose important information about the exact cause of the error.
 .. index:: single: sum_sequence()
 
 A simple example of detecting exceptions and passing them on is shown in the
-:c:func:`sum_sequence` example above.  It so happens that this example doesn't
+:c:func:`!sum_sequence` example above.  It so happens that this example doesn't
 need to clean up any owned references when it detects an error.  The following
 example function shows some error cleanup.  First, to remind you why you like
 Python, we show the equivalent Python code::
@@ -739,14 +770,14 @@ environment variable :envvar:`PYTHONHOME`, or insert additional directories in
 front of the standard path by setting :envvar:`PYTHONPATH`.
 
 .. index::
-   single: Py_SetProgramName()
    single: Py_GetPath()
    single: Py_GetPrefix()
    single: Py_GetExecPrefix()
    single: Py_GetProgramFullPath()
 
-The embedding application can steer the search by calling
-``Py_SetProgramName(file)`` *before* calling  :c:func:`Py_Initialize`.  Note that
+The embedding application can steer the search by setting
+:c:member:`PyConfig.program_name` *before* calling
+:c:func:`Py_InitializeFromConfig`. Note that
 :envvar:`PYTHONHOME` still overrides this and :envvar:`PYTHONPATH` is still
 inserted in front of the standard path.  An application that requires total
 control has to provide its own implementation of :c:func:`Py_GetPath`,
diff --git a/Doc/c-api/iterator.rst b/Doc/c-api/iterator.rst
index 3fcf099134d4dd..6b7ba8c9979163 100644
--- a/Doc/c-api/iterator.rst
+++ b/Doc/c-api/iterator.rst
@@ -6,7 +6,7 @@ Iterator Objects
 ----------------
 
 Python provides two general-purpose iterator objects.  The first, a sequence
-iterator, works with an arbitrary sequence supporting the :meth:`__getitem__`
+iterator, works with an arbitrary sequence supporting the :meth:`~object.__getitem__`
 method.  The second works with a callable object and a sentinel value, calling
 the callable for each item in the sequence, and ending the iteration when the
 sentinel value is returned.
@@ -19,7 +19,7 @@ sentinel value is returned.
    types.
 
 
-.. c:function:: int PySeqIter_Check(op)
+.. c:function:: int PySeqIter_Check(PyObject *op)
 
    Return true if the type of *op* is :c:data:`PySeqIter_Type`.  This function
    always succeeds.
@@ -38,7 +38,7 @@ sentinel value is returned.
    two-argument form of the :func:`iter` built-in function.
 
 
-.. c:function:: int PyCallIter_Check(op)
+.. c:function:: int PyCallIter_Check(PyObject *op)
 
    Return true if the type of *op* is :c:data:`PyCallIter_Type`.  This
    function always succeeds.
diff --git a/Doc/c-api/list.rst b/Doc/c-api/list.rst
index dbf35611eccd3e..c8b64bad702f50 100644
--- a/Doc/c-api/list.rst
+++ b/Doc/c-api/list.rst
@@ -86,6 +86,10 @@ List Objects
    Macro form of :c:func:`PyList_SetItem` without error checking. This is
    normally only used to fill in new lists where there is no previous content.
 
+   Bounds checking is performed as an assertion if Python is built in
+   :ref:`debug mode <debug-build>` or :option:`with assertions
+   <--with-assertions>`.
+
    .. note::
 
       This macro "steals" a reference to *item*, and, unlike
@@ -124,6 +128,30 @@ List Objects
    list is not supported.
 
 
+.. c:function:: int PyList_Extend(PyObject *list, PyObject *iterable)
+
+   Extend *list* with the contents of *iterable*.  This is the same as
+   ``PyList_SetSlice(list, PY_SSIZE_T_MAX, PY_SSIZE_T_MAX, iterable)``
+   and analogous to ``list.extend(iterable)`` or ``list += iterable``.
+
+   Raise an exception and return ``-1`` if *list* is not a :class:`list`
+   object. Return 0 on success.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyList_Clear(PyObject *list)
+
+   Remove all items from *list*.  This is the same as
+   ``PyList_SetSlice(list, 0, PY_SSIZE_T_MAX, NULL)`` and analogous to
+   ``list.clear()`` or ``del list[:]``.
+
+   Raise an exception and return ``-1`` if *list* is not a :class:`list`
+   object.  Return 0 on success.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: int PyList_Sort(PyObject *list)
 
    Sort the items of *list* in place.  Return ``0`` on success, ``-1`` on
diff --git a/Doc/c-api/long.rst b/Doc/c-api/long.rst
index 4a71c89ad85d31..045604870d3c84 100644
--- a/Doc/c-api/long.rst
+++ b/Doc/c-api/long.rst
@@ -121,7 +121,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
       single: OverflowError (built-in exception)
 
    Return a C :c:expr:`long` representation of *obj*.  If *obj* is not an
-   instance of :c:type:`PyLongObject`, first call its :meth:`__index__` method
+   instance of :c:type:`PyLongObject`, first call its :meth:`~object.__index__` method
    (if present) to convert it to a :c:type:`PyLongObject`.
 
    Raise :exc:`OverflowError` if the value of *obj* is out of range for a
@@ -130,30 +130,38 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
    .. versionchanged:: 3.10
-      This function will no longer use :meth:`__int__`.
+      This function will no longer use :meth:`~object.__int__`.
+
+
+.. c:function:: int PyLong_AsInt(PyObject *obj)
+
+   Similar to :c:func:`PyLong_AsLong`, but store the result in a C
+   :c:expr:`int` instead of a C :c:expr:`long`.
+
+   .. versionadded:: 3.13
 
 
 .. c:function:: long PyLong_AsLongAndOverflow(PyObject *obj, int *overflow)
 
    Return a C :c:expr:`long` representation of *obj*.  If *obj* is not an
-   instance of :c:type:`PyLongObject`, first call its :meth:`__index__`
+   instance of :c:type:`PyLongObject`, first call its :meth:`~object.__index__`
    method (if present) to convert it to a :c:type:`PyLongObject`.
 
-   If the value of *obj* is greater than :const:`LONG_MAX` or less than
-   :const:`LONG_MIN`, set *\*overflow* to ``1`` or ``-1``, respectively, and
+   If the value of *obj* is greater than :c:macro:`LONG_MAX` or less than
+   :c:macro:`LONG_MIN`, set *\*overflow* to ``1`` or ``-1``, respectively, and
    return ``-1``; otherwise, set *\*overflow* to ``0``.  If any other exception
    occurs set *\*overflow* to ``0`` and return ``-1`` as usual.
 
    Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
    .. versionchanged:: 3.10
-      This function will no longer use :meth:`__int__`.
+      This function will no longer use :meth:`~object.__int__`.
 
 
 .. c:function:: long long PyLong_AsLongLong(PyObject *obj)
@@ -162,7 +170,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
       single: OverflowError (built-in exception)
 
    Return a C :c:expr:`long long` representation of *obj*.  If *obj* is not an
-   instance of :c:type:`PyLongObject`, first call its :meth:`__index__` method
+   instance of :c:type:`PyLongObject`, first call its :meth:`~object.__index__` method
    (if present) to convert it to a :c:type:`PyLongObject`.
 
    Raise :exc:`OverflowError` if the value of *obj* is out of range for a
@@ -171,20 +179,20 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
    .. versionchanged:: 3.10
-      This function will no longer use :meth:`__int__`.
+      This function will no longer use :meth:`~object.__int__`.
 
 
 .. c:function:: long long PyLong_AsLongLongAndOverflow(PyObject *obj, int *overflow)
 
    Return a C :c:expr:`long long` representation of *obj*.  If *obj* is not an
-   instance of :c:type:`PyLongObject`, first call its :meth:`__index__` method
+   instance of :c:type:`PyLongObject`, first call its :meth:`~object.__index__` method
    (if present) to convert it to a :c:type:`PyLongObject`.
 
-   If the value of *obj* is greater than :const:`LLONG_MAX` or less than
-   :const:`LLONG_MIN`, set *\*overflow* to ``1`` or ``-1``, respectively,
+   If the value of *obj* is greater than :c:macro:`LLONG_MAX` or less than
+   :c:macro:`LLONG_MIN`, set *\*overflow* to ``1`` or ``-1``, respectively,
    and return ``-1``; otherwise, set *\*overflow* to ``0``.  If any other
    exception occurs set *\*overflow* to ``0`` and return ``-1`` as usual.
 
@@ -193,10 +201,10 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    .. versionadded:: 3.2
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
    .. versionchanged:: 3.10
-      This function will no longer use :meth:`__int__`.
+      This function will no longer use :meth:`~object.__int__`.
 
 
 .. c:function:: Py_ssize_t PyLong_AsSsize_t(PyObject *pylong)
@@ -267,7 +275,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
 .. c:function:: unsigned long PyLong_AsUnsignedLongMask(PyObject *obj)
 
    Return a C :c:expr:`unsigned long` representation of *obj*.  If *obj* is not
-   an instance of :c:type:`PyLongObject`, first call its :meth:`__index__`
+   an instance of :c:type:`PyLongObject`, first call its :meth:`~object.__index__`
    method (if present) to convert it to a :c:type:`PyLongObject`.
 
    If the value of *obj* is out of range for an :c:expr:`unsigned long`,
@@ -277,17 +285,17 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    disambiguate.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
    .. versionchanged:: 3.10
-      This function will no longer use :meth:`__int__`.
+      This function will no longer use :meth:`~object.__int__`.
 
 
 .. c:function:: unsigned long long PyLong_AsUnsignedLongLongMask(PyObject *obj)
 
    Return a C :c:expr:`unsigned long long` representation of *obj*.  If *obj*
    is not an instance of :c:type:`PyLongObject`, first call its
-   :meth:`__index__` method (if present) to convert it to a
+   :meth:`~object.__index__` method (if present) to convert it to a
    :c:type:`PyLongObject`.
 
    If the value of *obj* is out of range for an :c:expr:`unsigned long long`,
@@ -297,10 +305,10 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    to disambiguate.
 
    .. versionchanged:: 3.8
-      Use :meth:`__index__` if available.
+      Use :meth:`~object.__index__` if available.
 
    .. versionchanged:: 3.10
-      This function will no longer use :meth:`__int__`.
+      This function will no longer use :meth:`~object.__int__`.
 
 
 .. c:function:: double PyLong_AsDouble(PyObject *pylong)
@@ -322,3 +330,27 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    with :c:func:`PyLong_FromVoidPtr`.
 
    Returns ``NULL`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+
+
+.. c:function:: int PyUnstable_Long_IsCompact(const PyLongObject* op)
+
+   Return 1 if *op* is compact, 0 otherwise.
+
+   This function makes it possible for performance-critical code to implement
+   a “fast path� for small integers. For compact values use
+   :c:func:`PyUnstable_Long_CompactValue`; for others fall back to a
+   :c:func:`PyLong_As* <PyLong_AsSize_t>` function or
+   :c:func:`calling <PyObject_CallMethod>` :meth:`int.to_bytes`.
+
+   The speedup is expected to be negligible for most users.
+
+   Exactly what values are considered compact is an implementation detail
+   and is subject to change.
+
+.. c:function:: Py_ssize_t PyUnstable_Long_CompactValue(const PyLongObject* op)
+
+   If *op* is compact, as determined by :c:func:`PyUnstable_Long_IsCompact`,
+   return its value.
+
+   Otherwise, the return value is undefined.
+
diff --git a/Doc/c-api/mapping.rst b/Doc/c-api/mapping.rst
index cffb0ed50fb77d..1f55c0aa955c75 100644
--- a/Doc/c-api/mapping.rst
+++ b/Doc/c-api/mapping.rst
@@ -13,7 +13,7 @@ See also :c:func:`PyObject_GetItem`, :c:func:`PyObject_SetItem` and
 
    Return ``1`` if the object provides the mapping protocol or supports slicing,
    and ``0`` otherwise.  Note that it returns ``1`` for Python classes with
-   a :meth:`__getitem__` method, since in general it is impossible to
+   a :meth:`~object.__getitem__` method, since in general it is impossible to
    determine what type of keys the class supports. This function always succeeds.
 
 
@@ -28,52 +28,100 @@ See also :c:func:`PyObject_GetItem`, :c:func:`PyObject_SetItem` and
 
 .. c:function:: PyObject* PyMapping_GetItemString(PyObject *o, const char *key)
 
-   Return element of *o* corresponding to the string *key* or ``NULL`` on failure.
-   This is the equivalent of the Python expression ``o[key]``.
-   See also :c:func:`PyObject_GetItem`.
+   This is the same as :c:func:`PyObject_GetItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+
+.. c:function:: int PyMapping_GetOptionalItem(PyObject *obj, PyObject *key, PyObject **result)
+
+   Variant of :c:func:`PyObject_GetItem` which doesn't raise
+   :exc:`KeyError` if the key is not found.
+
+   If the key is found, return ``1`` and set *\*result* to a new
+   :term:`strong reference` to the corresponding value.
+   If the key is not found, return ``0`` and set *\*result* to ``NULL``;
+   the :exc:`KeyError` is silenced.
+   If an error other than :exc:`KeyError` is raised, return ``-1`` and
+   set *\*result* to ``NULL``.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyMapping_GetOptionalItemString(PyObject *obj, const char *key, PyObject **result)
+
+   This is the same as :c:func:`PyMapping_GetOptionalItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
 
 
 .. c:function:: int PyMapping_SetItemString(PyObject *o, const char *key, PyObject *v)
 
-   Map the string *key* to the value *v* in object *o*.  Returns ``-1`` on
-   failure.  This is the equivalent of the Python statement ``o[key] = v``.
-   See also :c:func:`PyObject_SetItem`.  This function *does not* steal a
-   reference to *v*.
+   This is the same as :c:func:`PyObject_SetItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
 
 
 .. c:function:: int PyMapping_DelItem(PyObject *o, PyObject *key)
 
-   Remove the mapping for the object *key* from the object *o*.  Return ``-1``
-   on failure.  This is equivalent to the Python statement ``del o[key]``.
    This is an alias of :c:func:`PyObject_DelItem`.
 
 
 .. c:function:: int PyMapping_DelItemString(PyObject *o, const char *key)
 
-   Remove the mapping for the string *key* from the object *o*.  Return ``-1``
-   on failure.  This is equivalent to the Python statement ``del o[key]``.
+   This is the same as :c:func:`PyObject_DelItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
 
 
-.. c:function:: int PyMapping_HasKey(PyObject *o, PyObject *key)
+.. c:function:: int PyMapping_HasKeyWithError(PyObject *o, PyObject *key)
 
    Return ``1`` if the mapping object has the key *key* and ``0`` otherwise.
    This is equivalent to the Python expression ``key in o``.
-   This function always succeeds.
+   On failure, return ``-1``.
 
-   Note that exceptions which occur while calling the :meth:`__getitem__`
-   method will get suppressed.
-   To get error reporting use :c:func:`PyObject_GetItem()` instead.
+   .. versionadded:: 3.13
 
 
-.. c:function:: int PyMapping_HasKeyString(PyObject *o, const char *key)
+.. c:function:: int PyMapping_HasKeyStringWithError(PyObject *o, const char *key)
+
+   This is the same as :c:func:`PyMapping_HasKeyWithError`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyMapping_HasKey(PyObject *o, PyObject *key)
 
    Return ``1`` if the mapping object has the key *key* and ``0`` otherwise.
    This is equivalent to the Python expression ``key in o``.
    This function always succeeds.
 
-   Note that exceptions which occur while calling the :meth:`__getitem__`
-   method and creating a temporary string object will get suppressed.
-   To get error reporting use :c:func:`PyMapping_GetItemString()` instead.
+   .. note::
+
+      Exceptions which occur when this calls :meth:`~object.__getitem__`
+      method are silently ignored.
+      For proper error handling, use :c:func:`PyMapping_HasKeyWithError`,
+      :c:func:`PyMapping_GetOptionalItem` or :c:func:`PyObject_GetItem()` instead.
+
+
+.. c:function:: int PyMapping_HasKeyString(PyObject *o, const char *key)
+
+   This is the same as :c:func:`PyMapping_HasKey`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   .. note::
+
+      Exceptions that occur when this calls :meth:`~object.__getitem__`
+      method or while creating the temporary :class:`str`
+      object are silently ignored.
+      For proper error handling, use :c:func:`PyMapping_HasKeyStringWithError`,
+      :c:func:`PyMapping_GetOptionalItemString` or
+      :c:func:`PyMapping_GetItemString` instead.
 
 
 .. c:function:: PyObject* PyMapping_Keys(PyObject *o)
diff --git a/Doc/c-api/marshal.rst b/Doc/c-api/marshal.rst
index 8e25968c6909fd..489f1580a414b2 100644
--- a/Doc/c-api/marshal.rst
+++ b/Doc/c-api/marshal.rst
@@ -25,12 +25,16 @@ unmarshalling.  Version 2 uses a binary format for floating point numbers.
    the least-significant 32 bits of *value*; regardless of the size of the
    native :c:expr:`long` type.  *version* indicates the file format.
 
+   This function can fail, in which case it sets the error indicator.
+   Use :c:func:`PyErr_Occurred` to check for that.
 
 .. c:function:: void PyMarshal_WriteObjectToFile(PyObject *value, FILE *file, int version)
 
    Marshal a Python object, *value*, to *file*.
    *version* indicates the file format.
 
+   This function can fail, in which case it sets the error indicator.
+   Use :c:func:`PyErr_Occurred` to check for that.
 
 .. c:function:: PyObject* PyMarshal_WriteObjectToString(PyObject *value, int version)
 
diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst
index 7041c15d23fb83..1f392e55078e77 100644
--- a/Doc/c-api/memory.rst
+++ b/Doc/c-api/memory.rst
@@ -136,7 +136,7 @@ need to be held.
 
 The :ref:`default raw memory allocator <default-memory-allocators>` uses
 the following functions: :c:func:`malloc`, :c:func:`calloc`, :c:func:`realloc`
-and :c:func:`free`; call ``malloc(1)`` (or ``calloc(1, 1)``) when requesting
+and :c:func:`!free`; call ``malloc(1)`` (or ``calloc(1, 1)``) when requesting
 zero bytes.
 
 .. versionadded:: 3.4
@@ -264,14 +264,14 @@ The following type-oriented macros are provided for convenience.  Note  that
 *TYPE* refers to any C type.
 
 
-.. c:function:: TYPE* PyMem_New(TYPE, size_t n)
+.. c:macro:: PyMem_New(TYPE, n)
 
    Same as :c:func:`PyMem_Malloc`, but allocates ``(n * sizeof(TYPE))`` bytes of
    memory.  Returns a pointer cast to :c:expr:`TYPE*`.  The memory will not have
    been initialized in any way.
 
 
-.. c:function:: TYPE* PyMem_Resize(void *p, TYPE, size_t n)
+.. c:macro:: PyMem_Resize(p, TYPE, n)
 
    Same as :c:func:`PyMem_Realloc`, but the memory block is resized to ``(n *
    sizeof(TYPE))`` bytes.  Returns a pointer cast to :c:expr:`TYPE*`. On return,
@@ -391,6 +391,8 @@ Legend:
 * ``malloc``: system allocators from the standard C library, C functions:
   :c:func:`malloc`, :c:func:`calloc`, :c:func:`realloc` and :c:func:`free`.
 * ``pymalloc``: :ref:`pymalloc memory allocator <pymalloc>`.
+* ``mimalloc``: :ref:`mimalloc memory allocator <mimalloc>`.  The pymalloc
+  allocator will be used if mimalloc support isn't available.
 * "+ debug": with :ref:`debug hooks on the Python memory allocators
   <pymem-debug-hooks>`.
 * "Debug build": :ref:`Python build in debug mode <debug-build>`.
@@ -423,7 +425,7 @@ Customize Memory Allocators
    +----------------------------------------------------------+---------------------------------------+
 
    .. versionchanged:: 3.5
-      The :c:type:`PyMemAllocator` structure was renamed to
+      The :c:type:`!PyMemAllocator` structure was renamed to
       :c:type:`PyMemAllocatorEx` and a new ``calloc`` field was added.
 
 
@@ -431,6 +433,8 @@ Customize Memory Allocators
 
    Enum used to identify an allocator domain. Domains:
 
+   .. c:namespace:: NULL
+
    .. c:macro:: PYMEM_DOMAIN_RAW
 
       Functions:
@@ -470,10 +474,14 @@ Customize Memory Allocators
    The new allocator must return a distinct non-``NULL`` pointer when requesting
    zero bytes.
 
-   For the :c:data:`PYMEM_DOMAIN_RAW` domain, the allocator must be
+   For the :c:macro:`PYMEM_DOMAIN_RAW` domain, the allocator must be
    thread-safe: the :term:`GIL <global interpreter lock>` is not held when the
    allocator is called.
 
+   For the remaining domains, the allocator must also be thread-safe:
+   the allocator may be called in different interpreters that do not
+   share a ``GIL``.
+
    If the new allocator is not a hook (does not call the previous allocator),
    the :c:func:`PyMem_SetupDebugHooks` function must be called to reinstall the
    debug hooks on top on the new allocator.
@@ -485,19 +493,21 @@ Customize Memory Allocators
 
        :c:func:`PyMem_SetAllocator` does have the following contract:
 
-        * It can be called after :c:func:`Py_PreInitialize` and before
-          :c:func:`Py_InitializeFromConfig` to install a custom memory
-          allocator. There are no restrictions over the installed allocator
-          other than the ones imposed by the domain (for instance, the Raw
-          Domain allows the allocator to be called without the GIL held). See
-          :ref:`the section on allocator domains <allocator-domains>` for more
-          information.
+       * It can be called after :c:func:`Py_PreInitialize` and before
+         :c:func:`Py_InitializeFromConfig` to install a custom memory
+         allocator. There are no restrictions over the installed allocator
+         other than the ones imposed by the domain (for instance, the Raw
+         Domain allows the allocator to be called without the GIL held). See
+         :ref:`the section on allocator domains <allocator-domains>` for more
+         information.
 
-        * If called after Python has finish initializing (after
-          :c:func:`Py_InitializeFromConfig` has been called) the allocator
-          **must** wrap the existing allocator. Substituting the current
-          allocator for some other arbitrary one is **not supported**.
+       * If called after Python has finish initializing (after
+         :c:func:`Py_InitializeFromConfig` has been called) the allocator
+         **must** wrap the existing allocator. Substituting the current
+         allocator for some other arbitrary one is **not supported**.
 
+   .. versionchanged:: 3.12
+      All allocators must be thread-safe.
 
 
 .. c:function:: void PyMem_SetupDebugHooks(void)
@@ -536,8 +546,8 @@ Runtime checks:
 - Detect write before the start of the buffer (buffer underflow).
 - Detect write after the end of the buffer (buffer overflow).
 - Check that the :term:`GIL <global interpreter lock>` is held when
-  allocator functions of :c:data:`PYMEM_DOMAIN_OBJ` (ex:
-  :c:func:`PyObject_Malloc`) and :c:data:`PYMEM_DOMAIN_MEM` (ex:
+  allocator functions of :c:macro:`PYMEM_DOMAIN_OBJ` (ex:
+  :c:func:`PyObject_Malloc`) and :c:macro:`PYMEM_DOMAIN_MEM` (ex:
   :c:func:`PyMem_Malloc`) domains are called.
 
 On error, the debug hooks use the :mod:`tracemalloc` module to get the
@@ -557,9 +567,9 @@ that the treatment of negative indices differs from a Python slice):
 ``p[-S]``
     API identifier (ASCII character):
 
-    * ``'r'`` for :c:data:`PYMEM_DOMAIN_RAW`.
-    * ``'m'`` for :c:data:`PYMEM_DOMAIN_MEM`.
-    * ``'o'`` for :c:data:`PYMEM_DOMAIN_OBJ`.
+    * ``'r'`` for :c:macro:`PYMEM_DOMAIN_RAW`.
+    * ``'m'`` for :c:macro:`PYMEM_DOMAIN_MEM`.
+    * ``'o'`` for :c:macro:`PYMEM_DOMAIN_OBJ`.
 
 ``p[-S+1:0]``
     Copies of PYMEM_FORBIDDENBYTE.  Used to catch under- writes and reads.
@@ -581,7 +591,7 @@ that the treatment of negative indices differs from a Python slice):
     default).
 
     A serial number, incremented by 1 on each call to a malloc-like or
-    realloc-like function.  Big-endian ``size_t``.  If "bad memory" is detected
+    realloc-like function.  Big-endian :c:type:`size_t`.  If "bad memory" is detected
     later, the serial number gives an excellent way to set a breakpoint on the
     next run, to capture the instant at which this block was passed out.  The
     static function bumpserialno() in obmalloc.c is the only place the serial
@@ -601,7 +611,7 @@ PYMEM_CLEANBYTE (meaning uninitialized memory is getting used).
    compiled in release mode.  On error, the debug hooks now use
    :mod:`tracemalloc` to get the traceback where a memory block was allocated.
    The debug hooks now also check if the GIL is held when functions of
-   :c:data:`PYMEM_DOMAIN_OBJ` and :c:data:`PYMEM_DOMAIN_MEM` domains are
+   :c:macro:`PYMEM_DOMAIN_OBJ` and :c:macro:`PYMEM_DOMAIN_MEM` domains are
    called.
 
 .. versionchanged:: 3.8
@@ -618,17 +628,18 @@ The pymalloc allocator
 
 Python has a *pymalloc* allocator optimized for small objects (smaller or equal
 to 512 bytes) with a short lifetime. It uses memory mappings called "arenas"
-with a fixed size of 256 KiB. It falls back to :c:func:`PyMem_RawMalloc` and
+with a fixed size of either 256 KiB on 32-bit platforms or 1 MiB on 64-bit
+platforms. It falls back to :c:func:`PyMem_RawMalloc` and
 :c:func:`PyMem_RawRealloc` for allocations larger than 512 bytes.
 
 *pymalloc* is the :ref:`default allocator <default-memory-allocators>` of the
-:c:data:`PYMEM_DOMAIN_MEM` (ex: :c:func:`PyMem_Malloc`) and
-:c:data:`PYMEM_DOMAIN_OBJ` (ex: :c:func:`PyObject_Malloc`) domains.
+:c:macro:`PYMEM_DOMAIN_MEM` (ex: :c:func:`PyMem_Malloc`) and
+:c:macro:`PYMEM_DOMAIN_OBJ` (ex: :c:func:`PyObject_Malloc`) domains.
 
 The arena allocator uses the following functions:
 
-* :c:func:`VirtualAlloc` and :c:func:`VirtualFree` on Windows,
-* :c:func:`mmap` and :c:func:`munmap` if available,
+* :c:func:`!VirtualAlloc` and :c:func:`!VirtualFree` on Windows,
+* :c:func:`!mmap` and :c:func:`!munmap` if available,
 * :c:func:`malloc` and :c:func:`free` otherwise.
 
 This allocator is disabled if Python is configured with the
@@ -663,6 +674,16 @@ Customize pymalloc Arena Allocator
 
    Set the arena allocator.
 
+.. _mimalloc:
+
+The mimalloc allocator
+======================
+
+.. versionadded:: 3.13
+
+Python supports the mimalloc allocator when the underlying platform support is available.
+mimalloc "is a general purpose allocator with excellent performance characteristics.
+Initially developed by Daan Leijen for the runtime systems of the Koka and Lean languages."
 
 tracemalloc C API
 =================
@@ -732,8 +753,8 @@ allocators operating on different heaps. ::
    free(buf1);       /* Fatal -- should be PyMem_Del()  */
 
 In addition to the functions aimed at handling raw memory blocks from the Python
-heap, objects in Python are allocated and released with :c:func:`PyObject_New`,
-:c:func:`PyObject_NewVar` and :c:func:`PyObject_Del`.
+heap, objects in Python are allocated and released with :c:macro:`PyObject_New`,
+:c:macro:`PyObject_NewVar` and :c:func:`PyObject_Del`.
 
 These will be explained in the next chapter on defining and implementing new
 object types in C.
diff --git a/Doc/c-api/method.rst b/Doc/c-api/method.rst
index 93ad30cd4f7a8d..0d75ab8e1af111 100644
--- a/Doc/c-api/method.rst
+++ b/Doc/c-api/method.rst
@@ -7,8 +7,8 @@ Instance Method Objects
 
 .. index:: pair: object; instancemethod
 
-An instance method is a wrapper for a :c:data:`PyCFunction` and the new way
-to bind a :c:data:`PyCFunction` to a class object. It replaces the former call
+An instance method is a wrapper for a :c:type:`PyCFunction` and the new way
+to bind a :c:type:`PyCFunction` to a class object. It replaces the former call
 ``PyMethod_New(func, NULL, class)``.
 
 
diff --git a/Doc/c-api/module.rst b/Doc/c-api/module.rst
index 230b471d473be7..979b22261efa3b 100644
--- a/Doc/c-api/module.rst
+++ b/Doc/c-api/module.rst
@@ -119,7 +119,7 @@ Module Objects
    encoded to 'utf-8'.
 
    .. deprecated:: 3.2
-      :c:func:`PyModule_GetFilename` raises :c:type:`UnicodeEncodeError` on
+      :c:func:`PyModule_GetFilename` raises :exc:`UnicodeEncodeError` on
       unencodable filenames, use :c:func:`PyModule_GetFilenameObject` instead.
 
 
@@ -145,7 +145,7 @@ or request "multi-phase initialization" by returning the definition struct itsel
 
    .. c:member:: PyModuleDef_Base m_base
 
-      Always initialize this member to :const:`PyModuleDef_HEAD_INIT`.
+      Always initialize this member to :c:macro:`PyModuleDef_HEAD_INIT`.
 
    .. c:member:: const char *m_name
 
@@ -164,7 +164,7 @@ or request "multi-phase initialization" by returning the definition struct itsel
 
       This memory area is allocated based on *m_size* on module creation,
       and freed when the module object is deallocated, after the
-      :c:member:`m_free` function has been called, if present.
+      :c:member:`~PyModuleDef.m_free` function has been called, if present.
 
       Setting ``m_size`` to ``-1`` means that the module does not support
       sub-interpreters, because it has global state.
@@ -202,7 +202,7 @@ or request "multi-phase initialization" by returning the definition struct itsel
       This function is not called if the module state was requested but is not
       allocated yet. This is the case immediately after the module is created
       and before the module is executed (:c:data:`Py_mod_exec` function). More
-      precisely, this function is not called if :c:member:`m_size` is greater
+      precisely, this function is not called if :c:member:`~PyModuleDef.m_size` is greater
       than 0 and the module state (as returned by :c:func:`PyModule_GetState`)
       is ``NULL``.
 
@@ -217,7 +217,7 @@ or request "multi-phase initialization" by returning the definition struct itsel
       This function is not called if the module state was requested but is not
       allocated yet. This is the case immediately after the module is created
       and before the module is executed (:c:data:`Py_mod_exec` function). More
-      precisely, this function is not called if :c:member:`m_size` is greater
+      precisely, this function is not called if :c:member:`~PyModuleDef.m_size` is greater
       than 0 and the module state (as returned by :c:func:`PyModule_GetState`)
       is ``NULL``.
 
@@ -238,7 +238,7 @@ or request "multi-phase initialization" by returning the definition struct itsel
       This function is not called if the module state was requested but is not
       allocated yet. This is the case immediately after the module is created
       and before the module is executed (:c:data:`Py_mod_exec` function). More
-      precisely, this function is not called if :c:member:`m_size` is greater
+      precisely, this function is not called if :c:member:`~PyModuleDef.m_size` is greater
       than 0 and the module state (as returned by :c:func:`PyModule_GetState`)
       is ``NULL``.
 
@@ -256,7 +256,7 @@ of the following two module creation functions:
 
    Create a new module object, given the definition in *def*.  This behaves
    like :c:func:`PyModule_Create2` with *module_api_version* set to
-   :const:`PYTHON_API_VERSION`.
+   :c:macro:`PYTHON_API_VERSION`.
 
 
 .. c:function:: PyObject* PyModule_Create2(PyModuleDef *def, int module_api_version)
@@ -282,7 +282,7 @@ An alternate way to specify extensions is to request "multi-phase initialization
 Extension modules created this way behave more like Python modules: the
 initialization is split between the *creation phase*, when the module object
 is created, and the *execution phase*, when it is populated.
-The distinction is similar to the :py:meth:`__new__` and :py:meth:`__init__` methods
+The distinction is similar to the :py:meth:`!__new__` and :py:meth:`!__init__` methods
 of classes.
 
 Unlike modules created using single-phase initialization, these modules are not
@@ -293,7 +293,7 @@ By default, multiple modules created from the same definition should be
 independent: changes to one should not affect the others.
 This means that all state should be specific to the module object (using e.g.
 using :c:func:`PyModule_GetState`), or its contents (such as the module's
-:attr:`__dict__` or individual classes created with :c:func:`PyType_FromSpec`).
+:attr:`~object.__dict__` or individual classes created with :c:func:`PyType_FromSpec`).
 
 All modules created using multi-phase initialization are expected to support
 :ref:`sub-interpreters <sub-interpreter-support>`. Making sure multiple modules
@@ -338,6 +338,7 @@ The available slot types are:
    The *value* pointer of this slot must point to a function of the signature:
 
    .. c:function:: PyObject* create_module(PyObject *spec, PyModuleDef *def)
+      :noindex:
 
    The function receives a :py:class:`~importlib.machinery.ModuleSpec`
    instance, as defined in :PEP:`451`, and the module definition.
@@ -372,10 +373,44 @@ The available slot types are:
    The signature of the function is:
 
    .. c:function:: int exec_module(PyObject* module)
+      :noindex:
 
    If multiple ``Py_mod_exec`` slots are specified, they are processed in the
    order they appear in the *m_slots* array.
 
+.. c:macro:: Py_mod_multiple_interpreters
+
+   Specifies one of the following values:
+
+   .. c:namespace:: NULL
+
+   .. c:macro:: Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED
+
+      The module does not support being imported in subinterpreters.
+
+   .. c:macro:: Py_MOD_MULTIPLE_INTERPRETERS_SUPPORTED
+
+      The module supports being imported in subinterpreters,
+      but only when they share the main interpreter's GIL.
+      (See :ref:`isolating-extensions-howto`.)
+
+   .. c:macro:: Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+
+      The module supports being imported in subinterpreters,
+      even when they have their own GIL.
+      (See :ref:`isolating-extensions-howto`.)
+
+   This slot determines whether or not importing this module
+   in a subinterpreter will fail.
+
+   Multiple ``Py_mod_multiple_interpreters`` slots may not be specified
+   in one module definition.
+
+   If ``Py_mod_multiple_interpreters`` is not specified, the import
+   machinery defaults to ``Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED``.
+
+   .. versionadded:: 3.12
+
 See :PEP:`489` for more details on multi-phase initialization.
 
 Low-level module creation functions
@@ -390,7 +425,7 @@ objects dynamically. Note that both ``PyModule_FromDefAndSpec`` and
 
    Create a new module object, given the definition in *def* and the
    ModuleSpec *spec*.  This behaves like :c:func:`PyModule_FromDefAndSpec2`
-   with *module_api_version* set to :const:`PYTHON_API_VERSION`.
+   with *module_api_version* set to :c:macro:`PYTHON_API_VERSION`.
 
    .. versionadded:: 3.5
 
@@ -486,59 +521,56 @@ state:
    .. versionadded:: 3.10
 
 
+.. c:function:: int PyModule_Add(PyObject *module, const char *name, PyObject *value)
+
+   Similar to :c:func:`PyModule_AddObjectRef`, but "steals" a reference
+   to *value*.
+   It can be called with a result of function that returns a new reference
+   without bothering to check its result or even saving it to a variable.
+
+   Example usage::
+
+        if (PyModule_Add(module, "spam", PyBytes_FromString(value)) < 0) {
+            goto error;
+        }
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: int PyModule_AddObject(PyObject *module, const char *name, PyObject *value)
 
    Similar to :c:func:`PyModule_AddObjectRef`, but steals a reference to
    *value* on success (if it returns ``0``).
 
-   The new :c:func:`PyModule_AddObjectRef` function is recommended, since it is
+   The new :c:func:`PyModule_Add` or :c:func:`PyModule_AddObjectRef`
+   functions are recommended, since it is
    easy to introduce reference leaks by misusing the
    :c:func:`PyModule_AddObject` function.
 
    .. note::
 
       Unlike other functions that steal references, ``PyModule_AddObject()``
-      only decrements the reference count of *value* **on success**.
+      only releases the reference to *value* **on success**.
 
       This means that its return value must be checked, and calling code must
-      :c:func:`Py_DECREF` *value* manually on error.
+      :c:func:`Py_XDECREF` *value* manually on error.
 
    Example usage::
 
-      static int
-      add_spam(PyObject *module, int value)
-      {
-          PyObject *obj = PyLong_FromLong(value);
-          if (obj == NULL) {
-              return -1;
-          }
-          if (PyModule_AddObject(module, "spam", obj) < 0) {
-              Py_DECREF(obj);
-              return -1;
-          }
-          // PyModule_AddObject() stole a reference to obj:
-          // Py_DECREF(obj) is not needed here
-          return 0;
-      }
-
-   The example can also be written without checking explicitly if *obj* is
-   ``NULL``::
+        PyObject *obj = PyBytes_FromString(value);
+        if (PyModule_AddObject(module, "spam", obj) < 0) {
+            // If 'obj' is not NULL and PyModule_AddObject() failed,
+            // 'obj' strong reference must be deleted with Py_XDECREF().
+            // If 'obj' is NULL, Py_XDECREF() does nothing.
+            Py_XDECREF(obj);
+            goto error;
+        }
+        // PyModule_AddObject() stole a reference to obj:
+        // Py_XDECREF(obj) is not needed here.
 
-      static int
-      add_spam(PyObject *module, int value)
-      {
-          PyObject *obj = PyLong_FromLong(value);
-          if (PyModule_AddObject(module, "spam", obj) < 0) {
-              Py_XDECREF(obj);
-              return -1;
-          }
-          // PyModule_AddObject() stole a reference to obj:
-          // Py_DECREF(obj) is not needed here
-          return 0;
-      }
+   .. deprecated:: 3.13
 
-   Note that ``Py_XDECREF()`` should be used instead of ``Py_DECREF()`` in
-   this case, since *obj* can be ``NULL``.
+      :c:func:`PyModule_AddObject` is :term:`soft deprecated`.
 
 
 .. c:function:: int PyModule_AddIntConstant(PyObject *module, const char *name, long value)
@@ -555,7 +587,7 @@ state:
    ``NULL``-terminated.  Return ``-1`` on error, ``0`` on success.
 
 
-.. c:function:: int PyModule_AddIntMacro(PyObject *module, macro)
+.. c:macro:: PyModule_AddIntMacro(module, macro)
 
    Add an int constant to *module*. The name and the value are taken from
    *macro*. For example ``PyModule_AddIntMacro(module, AF_INET)`` adds the int
@@ -563,7 +595,7 @@ state:
    Return ``-1`` on error, ``0`` on success.
 
 
-.. c:function:: int PyModule_AddStringMacro(PyObject *module, macro)
+.. c:macro:: PyModule_AddStringMacro(module, macro)
 
    Add a string constant to *module*.
 
diff --git a/Doc/c-api/none.rst b/Doc/c-api/none.rst
index b84a16a28ead56..f1941fc4bc4e85 100644
--- a/Doc/c-api/none.rst
+++ b/Doc/c-api/none.rst
@@ -9,18 +9,18 @@ The ``None`` Object
 
 Note that the :c:type:`PyTypeObject` for ``None`` is not directly exposed in the
 Python/C API.  Since ``None`` is a singleton, testing for object identity (using
-``==`` in C) is sufficient. There is no :c:func:`PyNone_Check` function for the
+``==`` in C) is sufficient. There is no :c:func:`!PyNone_Check` function for the
 same reason.
 
 
 .. c:var:: PyObject* Py_None
 
-   The Python ``None`` object, denoting lack of value.  This object has no methods.
-   It needs to be treated just like any other object with respect to reference
-   counts.
+   The Python ``None`` object, denoting lack of value.  This object has no methods
+   and is :term:`immortal`.
 
+   .. versionchanged:: 3.12
+      :c:data:`Py_None` is :term:`immortal`.
 
 .. c:macro:: Py_RETURN_NONE
 
-   Properly handle returning :c:data:`Py_None` from within a C function (that is,
-   increment the reference count of ``None`` and return it.)
+   Return :c:data:`Py_None` from a function.
diff --git a/Doc/c-api/objbuffer.rst b/Doc/c-api/objbuffer.rst
deleted file mode 100644
index 6b82a642d7ee42..00000000000000
--- a/Doc/c-api/objbuffer.rst
+++ /dev/null
@@ -1,55 +0,0 @@
-.. highlight:: c
-
-Old Buffer Protocol
--------------------
-
-.. deprecated:: 3.0
-
-These functions were part of the "old buffer protocol" API in Python 2.
-In Python 3, this protocol doesn't exist anymore but the functions are still
-exposed to ease porting 2.x code.  They act as a compatibility wrapper
-around the :ref:`new buffer protocol <bufferobjects>`, but they don't give
-you control over the lifetime of the resources acquired when a buffer is
-exported.
-
-Therefore, it is recommended that you call :c:func:`PyObject_GetBuffer`
-(or the ``y*`` or ``w*`` :ref:`format codes <arg-parsing>` with the
-:c:func:`PyArg_ParseTuple` family of functions) to get a buffer view over
-an object, and :c:func:`PyBuffer_Release` when the buffer view can be released.
-
-
-.. c:function:: int PyObject_AsCharBuffer(PyObject *obj, const char **buffer, Py_ssize_t *buffer_len)
-
-   Returns a pointer to a read-only memory location usable as character-based
-   input.  The *obj* argument must support the single-segment character buffer
-   interface.  On success, returns ``0``, sets *buffer* to the memory location
-   and *buffer_len* to the buffer length.  Returns ``-1`` and sets a
-   :exc:`TypeError` on error.
-
-
-.. c:function:: int PyObject_AsReadBuffer(PyObject *obj, const void **buffer, Py_ssize_t *buffer_len)
-
-   Returns a pointer to a read-only memory location containing arbitrary data.
-   The *obj* argument must support the single-segment readable buffer
-   interface.  On success, returns ``0``, sets *buffer* to the memory location
-   and *buffer_len* to the buffer length.  Returns ``-1`` and sets a
-   :exc:`TypeError` on error.
-
-
-.. c:function:: int PyObject_CheckReadBuffer(PyObject *o)
-
-   Returns ``1`` if *o* supports the single-segment readable buffer interface.
-   Otherwise returns ``0``.  This function always succeeds.
-
-   Note that this function tries to get and release a buffer, and exceptions
-   which occur while calling corresponding functions will get suppressed.
-   To get error reporting use :c:func:`PyObject_GetBuffer()` instead.
-
-
-.. c:function:: int PyObject_AsWriteBuffer(PyObject *obj, void **buffer, Py_ssize_t *buffer_len)
-
-   Returns a pointer to a writable memory location.  The *obj* argument must
-   support the single-segment, character buffer interface.  On success,
-   returns ``0``, sets *buffer* to the memory location and *buffer_len* to the
-   buffer length.  Returns ``-1`` and sets a :exc:`TypeError` on error.
-
diff --git a/Doc/c-api/object.rst b/Doc/c-api/object.rst
index a25ff244c9f07c..a4e3e74861a315 100644
--- a/Doc/c-api/object.rst
+++ b/Doc/c-api/object.rst
@@ -15,39 +15,64 @@ Object Protocol
 .. c:macro:: Py_RETURN_NOTIMPLEMENTED
 
    Properly handle returning :c:data:`Py_NotImplemented` from within a C
-   function (that is, increment the reference count of NotImplemented and
-   return it).
+   function (that is, create a new :term:`strong reference`
+   to NotImplemented and return it).
 
 
 .. c:function:: int PyObject_Print(PyObject *o, FILE *fp, int flags)
 
    Print an object *o*, on file *fp*.  Returns ``-1`` on error.  The flags argument
    is used to enable certain printing options.  The only option currently supported
-   is :const:`Py_PRINT_RAW`; if given, the :func:`str` of the object is written
+   is :c:macro:`Py_PRINT_RAW`; if given, the :func:`str` of the object is written
    instead of the :func:`repr`.
 
 
+.. c:function:: int PyObject_HasAttrWithError(PyObject *o, const char *attr_name)
+
+   Returns ``1`` if *o* has the attribute *attr_name*, and ``0`` otherwise.
+   This is equivalent to the Python expression ``hasattr(o, attr_name)``.
+   On failure, return ``-1``.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyObject_HasAttrStringWithError(PyObject *o, const char *attr_name)
+
+   This is the same as :c:func:`PyObject_HasAttrWithError`, but *attr_name* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: int PyObject_HasAttr(PyObject *o, PyObject *attr_name)
 
    Returns ``1`` if *o* has the attribute *attr_name*, and ``0`` otherwise.  This
    is equivalent to the Python expression ``hasattr(o, attr_name)``.  This function
    always succeeds.
 
-   Note that exceptions which occur while calling :meth:`__getattr__` and
-   :meth:`__getattribute__` methods will get suppressed.
-   To get error reporting use :c:func:`PyObject_GetAttr()` instead.
+   .. note::
+
+      Exceptions that occur when this calls :meth:`~object.__getattr__` and
+      :meth:`~object.__getattribute__` methods are silently ignored.
+      For proper error handling, use :c:func:`PyObject_HasAttrWithError`,
+      :c:func:`PyObject_GetOptionalAttr` or :c:func:`PyObject_GetAttr` instead.
 
 
 .. c:function:: int PyObject_HasAttrString(PyObject *o, const char *attr_name)
 
-   Returns ``1`` if *o* has the attribute *attr_name*, and ``0`` otherwise.  This
-   is equivalent to the Python expression ``hasattr(o, attr_name)``.  This function
-   always succeeds.
+   This is the same as :c:func:`PyObject_HasAttr`, but *attr_name* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   .. note::
 
-   Note that exceptions which occur while calling :meth:`__getattr__` and
-   :meth:`__getattribute__` methods and creating a temporary string object
-   will get suppressed.
-   To get error reporting use :c:func:`PyObject_GetAttrString()` instead.
+      Exceptions that occur when this calls :meth:`~object.__getattr__` and
+      :meth:`~object.__getattribute__` methods or while creating the temporary
+      :class:`str` object are silently ignored.
+      For proper error handling, use :c:func:`PyObject_HasAttrStringWithError`,
+      :c:func:`PyObject_GetOptionalAttrString`
+      or :c:func:`PyObject_GetAttrString` instead.
 
 
 .. c:function:: PyObject* PyObject_GetAttr(PyObject *o, PyObject *attr_name)
@@ -56,13 +81,42 @@ Object Protocol
    value on success, or ``NULL`` on failure.  This is the equivalent of the Python
    expression ``o.attr_name``.
 
+   If the missing attribute should not be treated as a failure, you can use
+   :c:func:`PyObject_GetOptionalAttr` instead.
+
 
 .. c:function:: PyObject* PyObject_GetAttrString(PyObject *o, const char *attr_name)
 
-   Retrieve an attribute named *attr_name* from object *o*. Returns the attribute
-   value on success, or ``NULL`` on failure. This is the equivalent of the Python
-   expression ``o.attr_name``.
+   This is the same as :c:func:`PyObject_GetAttr`, but *attr_name* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   If the missing attribute should not be treated as a failure, you can use
+   :c:func:`PyObject_GetOptionalAttrString` instead.
+
+
+.. c:function:: int PyObject_GetOptionalAttr(PyObject *obj, PyObject *attr_name, PyObject **result);
+
+   Variant of :c:func:`PyObject_GetAttr` which doesn't raise
+   :exc:`AttributeError` if the attribute is not found.
 
+   If the attribute is found, return ``1`` and set *\*result* to a new
+   :term:`strong reference` to the attribute.
+   If the attribute is not found, return ``0`` and set *\*result* to ``NULL``;
+   the :exc:`AttributeError` is silenced.
+   If an error other than :exc:`AttributeError` is raised, return ``-1`` and
+   set *\*result* to ``NULL``.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyObject_GetOptionalAttrString(PyObject *obj, const char *attr_name, PyObject **result);
+
+   This is the same as :c:func:`PyObject_GetOptionalAttr`, but *attr_name* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+   .. versionadded:: 3.13
 
 .. c:function:: PyObject* PyObject_GenericGetAttr(PyObject *o, PyObject *name)
 
@@ -88,10 +142,9 @@ Object Protocol
 
 .. c:function:: int PyObject_SetAttrString(PyObject *o, const char *attr_name, PyObject *v)
 
-   Set the value of the attribute named *attr_name*, for object *o*, to the value
-   *v*. Raise an exception and return ``-1`` on failure;
-   return ``0`` on success.  This is the equivalent of the Python statement
-   ``o.attr_name = v``.
+   This is the same as :c:func:`PyObject_SetAttr`, but *attr_name* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
 
    If *v* is ``NULL``, the attribute is deleted, but this feature is
    deprecated in favour of using :c:func:`PyObject_DelAttrString`.
@@ -117,8 +170,9 @@ Object Protocol
 
 .. c:function:: int PyObject_DelAttrString(PyObject *o, const char *attr_name)
 
-   Delete attribute named *attr_name*, for object *o*. Returns ``-1`` on failure.
-   This is the equivalent of the Python statement ``del o.attr_name``.
+   This is the same as :c:func:`PyObject_DelAttr`, but *attr_name* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
 
 
 .. c:function:: PyObject* PyObject_GenericGetDict(PyObject *o, void *context)
@@ -158,8 +212,8 @@ Object Protocol
 .. c:function:: PyObject* PyObject_RichCompare(PyObject *o1, PyObject *o2, int opid)
 
    Compare the values of *o1* and *o2* using the operation specified by *opid*,
-   which must be one of :const:`Py_LT`, :const:`Py_LE`, :const:`Py_EQ`,
-   :const:`Py_NE`, :const:`Py_GT`, or :const:`Py_GE`, corresponding to ``<``,
+   which must be one of :c:macro:`Py_LT`, :c:macro:`Py_LE`, :c:macro:`Py_EQ`,
+   :c:macro:`Py_NE`, :c:macro:`Py_GT`, or :c:macro:`Py_GE`, corresponding to ``<``,
    ``<=``, ``==``, ``!=``, ``>``, or ``>=`` respectively. This is the equivalent of
    the Python expression ``o1 op o2``, where ``op`` is the operator corresponding
    to *opid*. Returns the value of the comparison on success, or ``NULL`` on failure.
@@ -168,8 +222,8 @@ Object Protocol
 .. c:function:: int PyObject_RichCompareBool(PyObject *o1, PyObject *o2, int opid)
 
    Compare the values of *o1* and *o2* using the operation specified by *opid*,
-   which must be one of :const:`Py_LT`, :const:`Py_LE`, :const:`Py_EQ`,
-   :const:`Py_NE`, :const:`Py_GT`, or :const:`Py_GE`, corresponding to ``<``,
+   which must be one of :c:macro:`Py_LT`, :c:macro:`Py_LE`, :c:macro:`Py_EQ`,
+   :c:macro:`Py_NE`, :c:macro:`Py_GT`, or :c:macro:`Py_GE`, corresponding to ``<``,
    ``<=``, ``==``, ``!=``, ``>``, or ``>=`` respectively. Returns ``-1`` on error,
    ``0`` if the result is false, ``1`` otherwise. This is the equivalent of the
    Python expression ``o1 op o2``, where ``op`` is the operator corresponding to
@@ -177,7 +231,7 @@ Object Protocol
 
 .. note::
    If *o1* and *o2* are the same object, :c:func:`PyObject_RichCompareBool`
-   will always return ``1`` for :const:`Py_EQ` and ``0`` for :const:`Py_NE`.
+   will always return ``1`` for :c:macro:`Py_EQ` and ``0`` for :c:macro:`Py_NE`.
 
 .. c:function:: PyObject* PyObject_Format(PyObject *obj, PyObject *format_spec)
 
@@ -252,7 +306,7 @@ Object Protocol
 
    Normally only class objects, i.e. instances of :class:`type` or a derived
    class, are considered classes.  However, objects can override this by having
-   a :attr:`__bases__` attribute (which must be a tuple of base classes).
+   a :attr:`~class.__bases__` attribute (which must be a tuple of base classes).
 
 
 .. c:function:: int PyObject_IsInstance(PyObject *inst, PyObject *cls)
@@ -269,10 +323,10 @@ Object Protocol
    is an instance of *cls* if its class is a subclass of *cls*.
 
    An instance *inst* can override what is considered its class by having a
-   :attr:`__class__` attribute.
+   :attr:`~instance.__class__` attribute.
 
    An object *cls* can override if it is considered a class, and what its base
-   classes are, by having a :attr:`__bases__` attribute (which must be a tuple
+   classes are, by having a :attr:`~class.__bases__` attribute (which must be a tuple
    of base classes).
 
 
@@ -316,11 +370,12 @@ Object Protocol
 
    When *o* is non-``NULL``, returns a type object corresponding to the object type
    of object *o*. On failure, raises :exc:`SystemError` and returns ``NULL``.  This
-   is equivalent to the Python expression ``type(o)``. This function increments the
-   reference count of the return value. There's really no reason to use this
+   is equivalent to the Python expression ``type(o)``.
+   This function creates a new :term:`strong reference` to the return value.
+   There's really no reason to use this
    function instead of the :c:func:`Py_TYPE()` function, which returns a
-   pointer of type :c:expr:`PyTypeObject*`, except when the incremented reference
-   count is needed.
+   pointer of type :c:expr:`PyTypeObject*`, except when a new
+   :term:`strong reference` is needed.
 
 
 .. c:function:: int PyObject_TypeCheck(PyObject *o, PyTypeObject *type)
@@ -427,10 +482,28 @@ Object Protocol
 .. c:function:: void *PyObject_GetItemData(PyObject *o)
 
    Get a pointer to per-item data for a class with
-   :const:`Py_TPFLAGS_ITEMS_AT_END`.
+   :c:macro:`Py_TPFLAGS_ITEMS_AT_END`.
 
    On error, set an exception and return ``NULL``.
    :py:exc:`TypeError` is raised if *o* does not have
-   :const:`Py_TPFLAGS_ITEMS_AT_END` set.
+   :c:macro:`Py_TPFLAGS_ITEMS_AT_END` set.
 
    .. versionadded:: 3.12
+
+.. c:function:: int PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg)
+
+   Visit the managed dictionary of *obj*.
+
+   This function must only be called in a traverse function of the type which
+   has the :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag set.
+
+   .. versionadded:: 3.13
+
+.. c:function:: void PyObject_ClearManagedDict(PyObject *obj)
+
+   Clear the managed dictionary of *obj*.
+
+   This function must only be called in a traverse function of the type which
+   has the :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag set.
+
+   .. versionadded:: 3.13
diff --git a/Doc/c-api/perfmaps.rst b/Doc/c-api/perfmaps.rst
new file mode 100644
index 00000000000000..3d44d2eb6bf41d
--- /dev/null
+++ b/Doc/c-api/perfmaps.rst
@@ -0,0 +1,50 @@
+.. highlight:: c
+
+.. _perfmaps:
+
+Support for Perf Maps
+----------------------
+
+On supported platforms (as of this writing, only Linux), the runtime can take
+advantage of *perf map files* to make Python functions visible to an external
+profiling tool (such as `perf <https://perf.wiki.kernel.org/index.php/Main_Page>`_).
+A running process may create a file in the ``/tmp`` directory, which contains entries
+that can map a section of executable code to a name. This interface is described in the
+`documentation of the Linux Perf tool <https://git.kernel.org/pub/scm/linux/
+kernel/git/torvalds/linux.git/tree/tools/perf/Documentation/jit-interface.txt>`_.
+
+In Python, these helper APIs can be used by libraries and features that rely
+on generating machine code on the fly.
+
+Note that holding the Global Interpreter Lock (GIL) is not required for these APIs.
+
+.. c:function:: int PyUnstable_PerfMapState_Init(void)
+
+   Open the ``/tmp/perf-$pid.map`` file, unless it's already opened, and create
+   a lock to ensure thread-safe writes to the file (provided the writes are
+   done through :c:func:`PyUnstable_WritePerfMapEntry`). Normally, there's no need
+   to call this explicitly; just use :c:func:`PyUnstable_WritePerfMapEntry`
+   and it will initialize the state on first call.
+
+   Returns ``0`` on success, ``-1`` on failure to create/open the perf map file,
+   or ``-2`` on failure to create a lock. Check ``errno`` for more information
+   about the cause of a failure.
+
+.. c:function:: int PyUnstable_WritePerfMapEntry(const void *code_addr, unsigned int code_size, const char *entry_name)
+
+   Write one single entry to the ``/tmp/perf-$pid.map`` file. This function is
+   thread safe. Here is what an example entry looks like::
+
+      # address      size  name
+      7f3529fcf759 b     py::bar:/run/t.py
+
+   Will call :c:func:`PyUnstable_PerfMapState_Init` before writing the entry, if
+   the perf map file is not already opened. Returns ``0`` on success, or the
+   same error codes as :c:func:`PyUnstable_PerfMapState_Init` on failure.
+
+.. c:function:: void PyUnstable_PerfMapState_Fini(void)
+
+   Close the perf map file opened by :c:func:`PyUnstable_PerfMapState_Init`.
+   This is called by the runtime itself during interpreter shut-down. In
+   general, there shouldn't be a reason to explicitly call this, except to
+   handle specific scenarios such as forking.
diff --git a/Doc/c-api/refcounting.rst b/Doc/c-api/refcounting.rst
index d8e9c2da6f3ff3..75e1d46474f1e7 100644
--- a/Doc/c-api/refcounting.rst
+++ b/Doc/c-api/refcounting.rst
@@ -15,6 +15,12 @@ of Python objects.
 
    Get the reference count of the Python object *o*.
 
+   Note that the returned value may not actually reflect how many
+   references to the object are actually held.  For example, some
+   objects are :term:`immortal` and have a very high refcount that does not
+   reflect the actual number of references.  Consequently, do not rely
+   on the returned value to be accurate, other than a value of 0 or 1.
+
    Use the :c:func:`Py_SET_REFCNT()` function to set an object reference count.
 
    .. versionchanged:: 3.11
@@ -28,36 +34,56 @@ of Python objects.
 
    Set the object *o* reference counter to *refcnt*.
 
+   On :ref:`Python build with Free Threading <free-threading-build>`, if
+   *refcnt* is larger than ``UINT32_MAX``, the object is made :term:`immortal`.
+
+   This function has no effect on :term:`immortal` objects.
+
    .. versionadded:: 3.9
 
+   .. versionchanged:: 3.12
+      Immortal objects are not modified.
+
 
 .. c:function:: void Py_INCREF(PyObject *o)
 
-   Increment the reference count for object *o*.
+   Indicate taking a new :term:`strong reference` to object *o*,
+   indicating it is in use and should not be destroyed.
+
+   This function has no effect on :term:`immortal` objects.
 
    This function is usually used to convert a :term:`borrowed reference` to a
    :term:`strong reference` in-place. The :c:func:`Py_NewRef` function can be
    used to create a new :term:`strong reference`.
 
+   When done using the object, release is by calling :c:func:`Py_DECREF`.
+
    The object must not be ``NULL``; if you aren't sure that it isn't
    ``NULL``, use :c:func:`Py_XINCREF`.
 
+   Do not expect this function to actually modify *o* in any way.
+   For at least `some objects <https://peps.python.org/pep-0683/>`_,
+   this function has no effect.
+
+   .. versionchanged:: 3.12
+      Immortal objects are not modified.
+
 
 .. c:function:: void Py_XINCREF(PyObject *o)
 
-   Increment the reference count for object *o*.  The object may be ``NULL``, in
-   which case the macro has no effect.
+   Similar to :c:func:`Py_INCREF`, but the object *o* can be ``NULL``,
+   in which case this has no effect.
 
    See also :c:func:`Py_XNewRef`.
 
 
 .. c:function:: PyObject* Py_NewRef(PyObject *o)
 
-   Create a new :term:`strong reference` to an object: increment the reference
-   count of the object *o* and return the object *o*.
+   Create a new :term:`strong reference` to an object:
+   call :c:func:`Py_INCREF` on *o* and return the object *o*.
 
    When the :term:`strong reference` is no longer needed, :c:func:`Py_DECREF`
-   should be called on it to decrement the object reference count.
+   should be called on it to release the reference.
 
    The object *o* must not be ``NULL``; use :c:func:`Py_XNewRef` if *o* can be
    ``NULL``.
@@ -87,9 +113,14 @@ of Python objects.
 
 .. c:function:: void Py_DECREF(PyObject *o)
 
-   Decrement the reference count for object *o*.
+   Release a :term:`strong reference` to object *o*, indicating the
+   reference is no longer used.
 
-   If the reference count reaches zero, the object's type's deallocation
+   This function has no effect on :term:`immortal` objects.
+
+   Once the last :term:`strong reference` is released
+   (i.e. the object's reference count reaches 0),
+   the object's type's deallocation
    function (which must not be ``NULL``) is invoked.
 
    This function is usually used to delete a :term:`strong reference` before
@@ -98,10 +129,14 @@ of Python objects.
    The object must not be ``NULL``; if you aren't sure that it isn't ``NULL``,
    use :c:func:`Py_XDECREF`.
 
+   Do not expect this function to actually modify *o* in any way.
+   For at least `some objects <https://peps.python.org/pep-0683/>`_,
+   this function has no effect.
+
    .. warning::
 
       The deallocation function can cause arbitrary Python code to be invoked (e.g.
-      when a class instance with a :meth:`__del__` method is deallocated).  While
+      when a class instance with a :meth:`~object.__del__` method is deallocated).  While
       exceptions in such code are not propagated, the executed code has free access to
       all Python global variables.  This means that any object that is reachable from
       a global variable should be in a consistent state before :c:func:`Py_DECREF` is
@@ -109,25 +144,29 @@ of Python objects.
       reference to the deleted object in a temporary variable, update the list data
       structure, and then call :c:func:`Py_DECREF` for the temporary variable.
 
+   .. versionchanged:: 3.12
+      Immortal objects are not modified.
+
 
 .. c:function:: void Py_XDECREF(PyObject *o)
 
-   Decrement the reference count for object *o*.  The object may be ``NULL``, in
-   which case the macro has no effect; otherwise the effect is the same as for
-   :c:func:`Py_DECREF`, and the same warning applies.
+   Similar to :c:func:`Py_DECREF`, but the object *o* can be ``NULL``,
+   in which case this has no effect.
+   The same warning from :c:func:`Py_DECREF` applies here as well.
 
 
 .. c:function:: void Py_CLEAR(PyObject *o)
 
-   Decrement the reference count for object *o*.  The object may be ``NULL``, in
+   Release a :term:`strong reference` for object *o*.
+   The object may be ``NULL``, in
    which case the macro has no effect; otherwise the effect is the same as for
    :c:func:`Py_DECREF`, except that the argument is also set to ``NULL``.  The warning
    for :c:func:`Py_DECREF` does not apply with respect to the object passed because
    the macro carefully uses a temporary variable and sets the argument to ``NULL``
-   before decrementing its reference count.
+   before releasing the reference.
 
-   It is a good idea to use this macro whenever decrementing the reference
-   count of an object that might be traversed during garbage collection.
+   It is a good idea to use this macro whenever releasing a reference
+   to an object that might be traversed during garbage collection.
 
    .. versionchanged:: 3.12
       The macro argument is now only evaluated once. If the argument has side
@@ -136,20 +175,22 @@ of Python objects.
 
 .. c:function:: void Py_IncRef(PyObject *o)
 
-   Increment the reference count for object *o*. A function version of :c:func:`Py_XINCREF`.
+   Indicate taking a new :term:`strong reference` to object *o*.
+   A function version of :c:func:`Py_XINCREF`.
    It can be used for runtime dynamic embedding of Python.
 
 
 .. c:function:: void Py_DecRef(PyObject *o)
 
-   Decrement the reference count for object *o*. A function version of :c:func:`Py_XDECREF`.
+   Release a :term:`strong reference` to object *o*.
+   A function version of :c:func:`Py_XDECREF`.
    It can be used for runtime dynamic embedding of Python.
 
 
 .. c:macro:: Py_SETREF(dst, src)
 
-   Macro safely decrementing the `dst` reference count and setting `dst` to
-   `src`.
+   Macro safely releasing a :term:`strong reference` to object *dst*
+   and setting *dst* to *src*.
 
    As in case of :c:func:`Py_CLEAR`, "the obvious" code can be deadly::
 
@@ -160,9 +201,10 @@ of Python objects.
 
         Py_SETREF(dst, src);
 
-   That arranges to set `dst` to `src` _before_ decrementing reference count of
-   *dst* old value, so that any code triggered as a side-effect of `dst`
-   getting torn down no longer believes `dst` points to a valid object.
+   That arranges to set *dst* to *src* _before_ releasing the reference
+   to the old value of *dst*, so that any code triggered as a side-effect
+   of *dst* getting torn down no longer believes *dst* points
+   to a valid object.
 
    .. versionadded:: 3.6
 
diff --git a/Doc/c-api/sequence.rst b/Doc/c-api/sequence.rst
index 402a3e5e09ff56..ce28839f5ba739 100644
--- a/Doc/c-api/sequence.rst
+++ b/Doc/c-api/sequence.rst
@@ -9,7 +9,7 @@ Sequence Protocol
 .. c:function:: int PySequence_Check(PyObject *o)
 
    Return ``1`` if the object provides the sequence protocol, and ``0`` otherwise.
-   Note that it returns ``1`` for Python classes with a :meth:`__getitem__`
+   Note that it returns ``1`` for Python classes with a :meth:`~object.__getitem__`
    method, unless they are :class:`dict` subclasses, since in general it
    is impossible to determine what type of keys the class supports.  This
    function always succeeds.
diff --git a/Doc/c-api/set.rst b/Doc/c-api/set.rst
index d642a5f1902e2e..cba823aa027bd6 100644
--- a/Doc/c-api/set.rst
+++ b/Doc/c-api/set.rst
@@ -110,7 +110,7 @@ or :class:`frozenset` or instances of their subtypes.
    .. index:: pair: built-in function; len
 
    Return the length of a :class:`set` or :class:`frozenset` object. Equivalent to
-   ``len(anyset)``.  Raises a :exc:`PyExc_SystemError` if *anyset* is not a
+   ``len(anyset)``.  Raises a :exc:`SystemError` if *anyset* is not a
    :class:`set`, :class:`frozenset`, or an instance of a subtype.
 
 
@@ -122,9 +122,9 @@ or :class:`frozenset` or instances of their subtypes.
 .. c:function:: int PySet_Contains(PyObject *anyset, PyObject *key)
 
    Return ``1`` if found, ``0`` if not found, and ``-1`` if an error is encountered.  Unlike
-   the Python :meth:`__contains__` method, this function does not automatically
+   the Python :meth:`~object.__contains__` method, this function does not automatically
    convert unhashable sets into temporary frozensets.  Raise a :exc:`TypeError` if
-   the *key* is unhashable. Raise :exc:`PyExc_SystemError` if *anyset* is not a
+   the *key* is unhashable. Raise :exc:`SystemError` if *anyset* is not a
    :class:`set`, :class:`frozenset`, or an instance of a subtype.
 
 
@@ -147,9 +147,9 @@ subtypes but not for instances of :class:`frozenset` or its subtypes.
 
    Return ``1`` if found and removed, ``0`` if not found (no action taken), and ``-1`` if an
    error is encountered.  Does not raise :exc:`KeyError` for missing keys.  Raise a
-   :exc:`TypeError` if the *key* is unhashable.  Unlike the Python :meth:`~set.discard`
+   :exc:`TypeError` if the *key* is unhashable.  Unlike the Python :meth:`~frozenset.discard`
    method, this function does not automatically convert unhashable sets into
-   temporary frozensets. Raise :exc:`PyExc_SystemError` if *set* is not an
+   temporary frozensets. Raise :exc:`SystemError` if *set* is not an
    instance of :class:`set` or its subtype.
 
 
@@ -163,4 +163,6 @@ subtypes but not for instances of :class:`frozenset` or its subtypes.
 
 .. c:function:: int PySet_Clear(PyObject *set)
 
-   Empty an existing set of all elements.
+   Empty an existing set of all elements. Return ``0`` on
+   success. Return ``-1`` and raise :exc:`SystemError` if *set* is not an instance of
+   :class:`set` or its subtype.
diff --git a/Doc/c-api/slice.rst b/Doc/c-api/slice.rst
index 8271d9acfb645e..27a1757c745d8b 100644
--- a/Doc/c-api/slice.rst
+++ b/Doc/c-api/slice.rst
@@ -34,7 +34,7 @@ Slice Objects
    *length* as errors.
 
    Returns ``0`` on success and ``-1`` on error with no exception set (unless one of
-   the indices was not :const:`None` and failed to be converted to an integer,
+   the indices was not ``None`` and failed to be converted to an integer,
    in which case ``-1`` is returned with an exception set).
 
    You probably do not want to use this function.
@@ -113,11 +113,13 @@ Slice Objects
 
 
 Ellipsis Object
----------------
+^^^^^^^^^^^^^^^
 
 
 .. c:var:: PyObject *Py_Ellipsis
 
-   The Python ``Ellipsis`` object.  This object has no methods.  It needs to be
-   treated just like any other object with respect to reference counts.  Like
-   :c:data:`Py_None` it is a singleton object.
+   The Python ``Ellipsis`` object.  This object has no methods.  Like
+   :c:data:`Py_None`, it is an :term:`immortal` singleton object.
+
+   .. versionchanged:: 3.12
+      :c:data:`Py_Ellipsis` is immortal.
diff --git a/Doc/c-api/stable.rst b/Doc/c-api/stable.rst
index 3721fc0697f5cd..63a100a6f26f24 100644
--- a/Doc/c-api/stable.rst
+++ b/Doc/c-api/stable.rst
@@ -18,11 +18,11 @@ way; see :ref:`stable-abi-platform` below).
 So, code compiled for Python 3.10.0 will work on 3.10.8 and vice versa,
 but will need to be compiled separately for 3.9.x and 3.10.x.
 
-There are two tiers of C API with different stability exepectations:
+There are two tiers of C API with different stability expectations:
 
-- *Unstable API*, may change in minor versions without a deprecation period.
-  It is marked by the ``PyUnstable`` prefix in names.
-- *Limited API*, is compatible across several minor releases.
+- :ref:`Unstable API <unstable-c-api>`, may change in minor versions without
+  a deprecation period. It is marked by the ``PyUnstable`` prefix in names.
+- :ref:`Limited API <limited-c-api>`, is compatible across several minor releases.
   When :c:macro:`Py_LIMITED_API` is defined, only this subset is exposed
   from ``Python.h``.
 
@@ -55,26 +55,26 @@ CPython development and spend extra effort adjusting to changes.
 Stable Application Binary Interface
 ===================================
 
+For simplicity, this document talks about *extensions*, but the Limited API
+and Stable ABI work the same way for all uses of the API – for example,
+embedding Python.
+
+.. _limited-c-api:
+
+Limited C API
+-------------
+
 Python 3.2 introduced the *Limited API*, a subset of Python's C API.
 Extensions that only use the Limited API can be
 compiled once and work with multiple versions of Python.
-Contents of the Limited API are :ref:`listed below <stable-abi-list>`.
-
-To enable this, Python provides a *Stable ABI*: a set of symbols that will
-remain compatible across Python 3.x versions. The Stable ABI contains symbols
-exposed in the Limited API, but also other ones – for example, functions
-necessary to support older versions of the Limited API.
-
-(For simplicity, this document talks about *extensions*, but the Limited API
-and Stable ABI work the same way for all uses of the API – for example,
-embedding Python.)
+Contents of the Limited API are :ref:`listed below <limited-api-list>`.
 
 .. c:macro:: Py_LIMITED_API
 
    Define this macro before including ``Python.h`` to opt in to only use
    the Limited API, and to select the Limited API version.
 
-   Define ``Py_LIMITED_API`` to the value of :c:data:`PY_VERSION_HEX`
+   Define ``Py_LIMITED_API`` to the value of :c:macro:`PY_VERSION_HEX`
    corresponding to the lowest Python version your extension supports.
    The extension will work without recompilation with all Python 3 releases
    from the specified one onward, and can use Limited API introduced up to that
@@ -87,6 +87,19 @@ embedding Python.)
    You can also define ``Py_LIMITED_API`` to ``3``. This works the same as
    ``0x03020000`` (Python 3.2, the version that introduced Limited API).
 
+
+.. _stable-abi:
+
+Stable ABI
+----------
+
+To enable this, Python provides a *Stable ABI*: a set of symbols that will
+remain compatible across Python 3.x versions.
+
+The Stable ABI contains symbols exposed in the :ref:`Limited API
+<limited-c-api>`, but also other ones – for example, functions necessary to
+support older versions of the Limited API.
+
 On Windows, extensions that use the Stable ABI should be linked against
 ``python3.dll`` rather than a version-specific library such as
 ``python39.dll``.
@@ -131,9 +144,9 @@ Limited API Caveats
 -------------------
 
 Note that compiling with ``Py_LIMITED_API`` is *not* a complete guarantee that
-code conforms to the Limited API or the Stable ABI. ``Py_LIMITED_API`` only
-covers definitions, but an API also includes other issues, such as expected
-semantics.
+code conforms to the :ref:`Limited API <limited-c-api>` or the :ref:`Stable ABI
+<stable-abi>`. ``Py_LIMITED_API`` only covers definitions, but an API also
+includes other issues, such as expected semantics.
 
 One issue that ``Py_LIMITED_API`` does not guard against is calling a function
 with arguments that are invalid in a lower Python version.
@@ -166,9 +179,9 @@ Platform Considerations
 =======================
 
 ABI stability depends not only on Python, but also on the compiler used,
-lower-level libraries and compiler options. For the purposes of the Stable ABI,
-these details define a “platform�. They usually depend on the OS
-type and processor architecture
+lower-level libraries and compiler options. For the purposes of
+the :ref:`Stable ABI <stable-abi>`, these details define a “platform�. They
+usually depend on the OS type and processor architecture
 
 It is the responsibility of each particular distributor of Python
 to ensure that all Python versions on a particular platform are built
@@ -177,12 +190,12 @@ This is the case with Windows and macOS releases from ``python.org`` and many
 third-party distributors.
 
 
-.. _stable-abi-list:
+.. _limited-api-list:
 
 Contents of Limited API
 =======================
 
 
-Currently, the Limited API includes the following items:
+Currently, the :ref:`Limited API <limited-c-api>` includes the following items:
 
 .. limited-api-list::
diff --git a/Doc/c-api/structures.rst b/Doc/c-api/structures.rst
index aae1b951804491..528813c255c0a5 100644
--- a/Doc/c-api/structures.rst
+++ b/Doc/c-api/structures.rst
@@ -35,7 +35,7 @@ under :ref:`reference counting <countingrefs>`.
 
 .. c:type:: PyVarObject
 
-   This is an extension of :c:type:`PyObject` that adds the :attr:`ob_size`
+   This is an extension of :c:type:`PyObject` that adds the :c:member:`~PyVarObject.ob_size`
    field.  This is only used for objects that have some notion of *length*.
    This type does not often appear in the Python/C API.
    Access to the members must be done by using the macros
@@ -152,7 +152,7 @@ under :ref:`reference counting <countingrefs>`.
 .. c:macro:: PyVarObject_HEAD_INIT(type, size)
 
    This is a macro which expands to initialization values for a new
-   :c:type:`PyVarObject` type, including the :attr:`ob_size` field.
+   :c:type:`PyVarObject` type, including the :c:member:`~PyVarObject.ob_size` field.
    This macro expands to::
 
       _PyObject_EXTRA_INIT
@@ -179,7 +179,7 @@ Implementing functions and methods
 .. c:type:: PyCFunctionWithKeywords
 
    Type of the functions used to implement Python callables in C
-   with signature :const:`METH_VARARGS | METH_KEYWORDS`.
+   with signature :ref:`METH_VARARGS | METH_KEYWORDS <METH_VARARGS-METH_KEYWORDS>`.
    The function signature is::
 
       PyObject *PyCFunctionWithKeywords(PyObject *self,
@@ -190,7 +190,7 @@ Implementing functions and methods
 .. c:type:: _PyCFunctionFast
 
    Type of the functions used to implement Python callables in C
-   with signature :const:`METH_FASTCALL`.
+   with signature :c:macro:`METH_FASTCALL`.
    The function signature is::
 
       PyObject *_PyCFunctionFast(PyObject *self,
@@ -200,7 +200,7 @@ Implementing functions and methods
 .. c:type:: _PyCFunctionFastWithKeywords
 
    Type of the functions used to implement Python callables in C
-   with signature :const:`METH_FASTCALL | METH_KEYWORDS`.
+   with signature :ref:`METH_FASTCALL | METH_KEYWORDS <METH_FASTCALL-METH_KEYWORDS>`.
    The function signature is::
 
       PyObject *_PyCFunctionFastWithKeywords(PyObject *self,
@@ -211,7 +211,7 @@ Implementing functions and methods
 .. c:type:: PyCMethod
 
    Type of the functions used to implement Python callables in C
-   with signature :const:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS`.
+   with signature :ref:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS <METH_METHOD-METH_FASTCALL-METH_KEYWORDS>`.
    The function signature is::
 
       PyObject *PyCMethod(PyObject *self,
@@ -228,36 +228,38 @@ Implementing functions and methods
    Structure used to describe a method of an extension type.  This structure has
    four fields:
 
-   .. c:member:: const char* ml_name
+   .. c:member:: const char *ml_name
 
-      name of the method
+      Name of the method.
 
    .. c:member:: PyCFunction ml_meth
 
-      pointer to the C implementation
+      Pointer to the C implementation.
 
    .. c:member:: int ml_flags
 
-      flags bits indicating how the call should be constructed
+      Flags bits indicating how the call should be constructed.
 
-   .. c:member:: const char* ml_doc
+   .. c:member:: const char *ml_doc
 
-      points to the contents of the docstring
+      Points to the contents of the docstring.
 
-The :c:member:`ml_meth` is a C function pointer.  The functions may be of different
+The :c:member:`~PyMethodDef.ml_meth` is a C function pointer.
+The functions may be of different
 types, but they always return :c:expr:`PyObject*`.  If the function is not of
 the :c:type:`PyCFunction`, the compiler will require a cast in the method table.
 Even though :c:type:`PyCFunction` defines the first parameter as
 :c:expr:`PyObject*`, it is common that the method implementation uses the
 specific C type of the *self* object.
 
-The :c:member:`ml_flags` field is a bitfield which can include the following flags.
+The :c:member:`~PyMethodDef.ml_flags` field is a bitfield which can include
+the following flags.
 The individual flags indicate either a calling convention or a binding
 convention.
 
 There are these calling conventions:
 
-.. data:: METH_VARARGS
+.. c:macro:: METH_VARARGS
 
    This is the typical calling convention, where the methods have the type
    :c:type:`PyCFunction`. The function expects two :c:expr:`PyObject*` values.
@@ -267,8 +269,17 @@ There are these calling conventions:
    using :c:func:`PyArg_ParseTuple` or :c:func:`PyArg_UnpackTuple`.
 
 
-.. data:: METH_VARARGS | METH_KEYWORDS
+.. c:macro:: METH_KEYWORDS
 
+   Can only be used in certain combinations with other flags:
+   :ref:`METH_VARARGS | METH_KEYWORDS <METH_VARARGS-METH_KEYWORDS>`,
+   :ref:`METH_FASTCALL | METH_KEYWORDS <METH_FASTCALL-METH_KEYWORDS>` and
+   :ref:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS <METH_METHOD-METH_FASTCALL-METH_KEYWORDS>`.
+
+
+.. _METH_VARARGS-METH_KEYWORDS:
+
+:c:expr:`METH_VARARGS | METH_KEYWORDS`
    Methods with these flags must be of type :c:type:`PyCFunctionWithKeywords`.
    The function expects three parameters: *self*, *args*, *kwargs* where
    *kwargs* is a dictionary of all the keyword arguments or possibly ``NULL``
@@ -276,7 +287,7 @@ There are these calling conventions:
    using :c:func:`PyArg_ParseTupleAndKeywords`.
 
 
-.. data:: METH_FASTCALL
+.. c:macro:: METH_FASTCALL
 
    Fast calling convention supporting only positional arguments.
    The methods have the type :c:type:`_PyCFunctionFast`.
@@ -288,12 +299,13 @@ There are these calling conventions:
 
    .. versionchanged:: 3.10
 
-      ``METH_FASTCALL`` is now part of the stable ABI.
+      ``METH_FASTCALL`` is now part of the :ref:`stable ABI <stable-abi>`.
 
 
-.. data:: METH_FASTCALL | METH_KEYWORDS
+.. _METH_FASTCALL-METH_KEYWORDS:
 
-   Extension of :const:`METH_FASTCALL` supporting also keyword arguments,
+:c:expr:`METH_FASTCALL | METH_KEYWORDS`
+   Extension of :c:macro:`METH_FASTCALL` supporting also keyword arguments,
    with methods of type :c:type:`_PyCFunctionFastWithKeywords`.
    Keyword arguments are passed the same way as in the
    :ref:`vectorcall protocol <vectorcall>`:
@@ -306,10 +318,18 @@ There are these calling conventions:
    .. versionadded:: 3.7
 
 
-.. data:: METH_METHOD | METH_FASTCALL | METH_KEYWORDS
+.. c:macro:: METH_METHOD
+
+   Can only be used in the combination with other flags:
+   :ref:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS <METH_METHOD-METH_FASTCALL-METH_KEYWORDS>`.
+
 
-   Extension of :const:`METH_FASTCALL | METH_KEYWORDS` supporting the *defining
-   class*, that is, the class that contains the method in question.
+.. _METH_METHOD-METH_FASTCALL-METH_KEYWORDS:
+
+:c:expr:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS`
+   Extension of :ref:`METH_FASTCALL | METH_KEYWORDS <METH_FASTCALL-METH_KEYWORDS>`
+   supporting the *defining class*, that is,
+   the class that contains the method in question.
    The defining class might be a superclass of ``Py_TYPE(self)``.
 
    The method needs to be of type :c:type:`PyCMethod`, the same as for
@@ -319,10 +339,10 @@ There are these calling conventions:
    .. versionadded:: 3.9
 
 
-.. data:: METH_NOARGS
+.. c:macro:: METH_NOARGS
 
    Methods without parameters don't need to check whether arguments are given if
-   they are listed with the :const:`METH_NOARGS` flag.  They need to be of type
+   they are listed with the :c:macro:`METH_NOARGS` flag.  They need to be of type
    :c:type:`PyCFunction`.  The first parameter is typically named *self* and will
    hold a reference to the module or object instance.  In all cases the second
    parameter will be ``NULL``.
@@ -331,9 +351,9 @@ There are these calling conventions:
    :c:macro:`Py_UNUSED` can be used to prevent a compiler warning.
 
 
-.. data:: METH_O
+.. c:macro:: METH_O
 
-   Methods with a single object argument can be listed with the :const:`METH_O`
+   Methods with a single object argument can be listed with the :c:macro:`METH_O`
    flag, instead of invoking :c:func:`PyArg_ParseTuple` with a ``"O"`` argument.
    They have the type :c:type:`PyCFunction`, with the *self* parameter, and a
    :c:expr:`PyObject*` parameter representing the single argument.
@@ -345,7 +365,7 @@ defined for modules.  At most one of these flags may be set for any given
 method.
 
 
-.. data:: METH_CLASS
+.. c:macro:: METH_CLASS
 
    .. index:: pair: built-in function; classmethod
 
@@ -355,7 +375,7 @@ method.
    function.
 
 
-.. data:: METH_STATIC
+.. c:macro:: METH_STATIC
 
    .. index:: pair: built-in function; staticmethod
 
@@ -367,13 +387,13 @@ One other constant controls whether a method is loaded in place of another
 definition with the same method name.
 
 
-.. data:: METH_COEXIST
+.. c:macro:: METH_COEXIST
 
    The method will be loaded in place of existing definitions.  Without
    *METH_COEXIST*, the default is to skip repeated definitions.  Since slot
    wrappers are loaded before the method table, the existence of a
    *sq_contains* slot, for example, would generate a wrapped method named
-   :meth:`__contains__` and preclude the loading of a corresponding
+   :meth:`~object.__contains__` and preclude the loading of a corresponding
    PyCFunction with the same name.  With the flag defined, the PyCFunction
    will be loaded in place of the wrapper object and will co-exist with the
    slot.  This is helpful because calls to PyCFunctions are optimized more
@@ -386,7 +406,11 @@ Accessing attributes of extension types
 .. c:type:: PyMemberDef
 
    Structure which describes an attribute of a type which corresponds to a C
-   struct member.  Its fields are, in order:
+   struct member.
+   When defining a class, put a NULL-terminated array of these
+   structures in the :c:member:`~PyTypeObject.tp_members` slot.
+
+   Its fields are, in order:
 
    .. c:member:: const char* name
 
@@ -395,7 +419,7 @@ Accessing attributes of extension types
 
          The string should be static, no copy is made of it.
 
-   .. c:member:: Py_ssize_t PyMemberDef.offset
+   .. c:member:: Py_ssize_t offset
 
       The offset in bytes that the member is located on the type’s object struct.
 
@@ -414,7 +438,7 @@ Accessing attributes of extension types
       The string should be static, no copy is made of it.
       Typically, it is defined using :c:macro:`PyDoc_STR`.
 
-   By default (when :c:member:`flags` is ``0``), members allow
+   By default (when :c:member:`~PyMemberDef.flags` is ``0``), members allow
    both read and write access.
    Use the :c:macro:`Py_READONLY` flag for read-only access.
    Certain types, like :c:macro:`Py_T_STRING`, imply :c:macro:`Py_READONLY`.
@@ -440,8 +464,8 @@ Accessing attributes of extension types
    The legacy offsets :c:member:`~PyTypeObject.tp_dictoffset` and
    :c:member:`~PyTypeObject.tp_weaklistoffset` can be defined similarly using
    ``"__dictoffset__"`` and ``"__weaklistoffset__"`` members, but extensions
-   are strongly encouraged to use :const:`Py_TPFLAGS_MANAGED_DICT` and
-   :const:`Py_TPFLAGS_MANAGED_WEAKREF` instead.
+   are strongly encouraged to use :c:macro:`Py_TPFLAGS_MANAGED_DICT` and
+   :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead.
 
    .. versionchanged:: 3.12
 
@@ -494,7 +518,7 @@ The following flags can be used with :c:member:`PyMemberDef.flags`:
 
    Can only be used as part of :c:member:`Py_tp_members <PyTypeObject.tp_members>`
    :c:type:`slot <PyTypeSlot>` when creating a class using negative
-   :c:member:`~PyTypeDef.basicsize`.
+   :c:member:`~PyType_Spec.basicsize`.
    It is mandatory in that case.
 
    This flag is only used in :c:type:`PyTypeSlot`.
@@ -509,19 +533,19 @@ The following flags can be used with :c:member:`PyMemberDef.flags`:
 
 .. versionchanged:: 3.10
 
-   The :const:`!RESTRICTED`, :const:`!READ_RESTRICTED` and
-   :const:`!WRITE_RESTRICTED` macros available with
+   The :c:macro:`!RESTRICTED`, :c:macro:`!READ_RESTRICTED` and
+   :c:macro:`!WRITE_RESTRICTED` macros available with
    ``#include "structmember.h"`` are deprecated.
-   :const:`!READ_RESTRICTED` and :const:`!RESTRICTED` are equivalent to
-   :const:`Py_AUDIT_READ`; :const:`!WRITE_RESTRICTED` does nothing.
+   :c:macro:`!READ_RESTRICTED` and :c:macro:`!RESTRICTED` are equivalent to
+   :c:macro:`Py_AUDIT_READ`; :c:macro:`!WRITE_RESTRICTED` does nothing.
 
 .. index::
    single: READONLY
 
 .. versionchanged:: 3.12
 
-   The :const:`!READONLY` macro was renamed to :const:`Py_READONLY`.
-   The :const:`!PY_AUDIT_READ` macro was renamed with the ``Py_`` prefix.
+   The :c:macro:`!READONLY` macro was renamed to :c:macro:`Py_READONLY`.
+   The :c:macro:`!PY_AUDIT_READ` macro was renamed with the ``Py_`` prefix.
    The new names are now always available.
    Previously, these required ``#include "structmember.h"``.
    The header is still available and it provides the old names.
@@ -568,7 +592,7 @@ Macro name                       C type                        Python type
 
    (*): Zero-terminated, UTF8-encoded C string.
    With :c:macro:`!Py_T_STRING` the C representation is a pointer;
-   with :c:macro:`!Py_T_STRING_INLINE` the string is stored directly
+   with :c:macro:`!Py_T_STRING_INPLACE` the string is stored directly
    in the structure.
 
    (**): String of length 1. Only ASCII is accepted.
@@ -625,23 +649,23 @@ Defining Getters and Setters
    Structure to define property-like access for a type. See also description of
    the :c:member:`PyTypeObject.tp_getset` slot.
 
-   .. c:member:: const char* PyGetSetDef.name
+   .. c:member:: const char* name
 
       attribute name
 
-   .. c:member:: getter PyGetSetDef.get
+   .. c:member:: getter get
 
       C function to get the attribute.
 
-   .. c:member:: setter PyGetSetDef.set
+   .. c:member:: setter set
 
       Optional C function to set or delete the attribute, if omitted the attribute is readonly.
 
-   .. c:member:: const char* PyGetSetDef.doc
+   .. c:member:: const char* doc
 
       optional docstring
 
-   .. c:member:: void* PyGetSetDef.closure
+   .. c:member:: void* closure
 
       Optional function pointer, providing additional data for getter and setter.
 
diff --git a/Doc/c-api/sys.rst b/Doc/c-api/sys.rst
index 6fc8a3aff95686..e3c54b075114ff 100644
--- a/Doc/c-api/sys.rst
+++ b/Doc/c-api/sys.rst
@@ -8,8 +8,9 @@ Operating System Utilities
 .. c:function:: PyObject* PyOS_FSPath(PyObject *path)
 
    Return the file system representation for *path*. If the object is a
-   :class:`str` or :class:`bytes` object, then its reference count is
-   incremented. If the object implements the :class:`os.PathLike` interface,
+   :class:`str` or :class:`bytes` object, then a new
+   :term:`strong reference` is returned.
+   If the object implements the :class:`os.PathLike` interface,
    then :meth:`~os.PathLike.__fspath__` is returned as long as it is a
    :class:`str` or :class:`bytes` object. Otherwise :exc:`TypeError` is raised
    and ``NULL`` is returned.
@@ -97,16 +98,16 @@ Operating System Utilities
 .. c:function:: int PyOS_CheckStack()
 
    Return true when the interpreter runs out of stack space.  This is a reliable
-   check, but is only available when :const:`USE_STACKCHECK` is defined (currently
+   check, but is only available when :c:macro:`USE_STACKCHECK` is defined (currently
    on certain versions of Windows using the Microsoft Visual C++ compiler).
-   :const:`USE_STACKCHECK` will be defined automatically; you should never
+   :c:macro:`USE_STACKCHECK` will be defined automatically; you should never
    change the definition in your own code.
 
 
 .. c:function:: PyOS_sighandler_t PyOS_getsig(int i)
 
    Return the current signal handler for signal *i*.  This is a thin wrapper around
-   either :c:func:`sigaction` or :c:func:`signal`.  Do not call those functions
+   either :c:func:`!sigaction` or :c:func:`!signal`.  Do not call those functions
    directly! :c:type:`PyOS_sighandler_t` is a typedef alias for :c:expr:`void
    (\*)(int)`.
 
@@ -114,7 +115,7 @@ Operating System Utilities
 .. c:function:: PyOS_sighandler_t PyOS_setsig(int i, PyOS_sighandler_t h)
 
    Set the signal handler for signal *i* to be *h*; return the old signal handler.
-   This is a thin wrapper around either :c:func:`sigaction` or :c:func:`signal`.  Do
+   This is a thin wrapper around either :c:func:`!sigaction` or :c:func:`!signal`.  Do
    not call those functions directly!  :c:type:`PyOS_sighandler_t` is a typedef
    alias for :c:expr:`void (\*)(int)`.
 
@@ -167,7 +168,7 @@ Operating System Utilities
 
    .. versionchanged:: 3.8
       The function now uses the UTF-8 encoding on Windows if
-      :c:member:`PyConfig.legacy_windows_fs_encoding` is zero;
+      :c:member:`PyPreConfig.legacy_windows_fs_encoding` is zero;
 
 
 .. c:function:: char* Py_EncodeLocale(const wchar_t *text, size_t *error_pos)
@@ -209,7 +210,7 @@ Operating System Utilities
 
    .. versionchanged:: 3.8
       The function now uses the UTF-8 encoding on Windows if
-      :c:member:`PyConfig.legacy_windows_fs_encoding` is zero.
+      :c:member:`PyPreConfig.legacy_windows_fs_encoding` is zero.
 
 
 .. _systemfunctions:
@@ -237,45 +238,8 @@ accessible to C code.  They all work with the current interpreter thread's
    Reset :data:`sys.warnoptions` to an empty list. This function may be
    called prior to :c:func:`Py_Initialize`.
 
-.. c:function:: void PySys_AddWarnOption(const wchar_t *s)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.warnoptions` should be used instead, see :ref:`Python
-   Initialization Configuration <init-config>`.
-
-   Append *s* to :data:`sys.warnoptions`. This function must be called prior
-   to :c:func:`Py_Initialize` in order to affect the warnings filter list.
-
-   .. deprecated:: 3.11
-
-.. c:function:: void PySys_AddWarnOptionUnicode(PyObject *unicode)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.warnoptions` should be used instead, see :ref:`Python
-   Initialization Configuration <init-config>`.
-
-   Append *unicode* to :data:`sys.warnoptions`.
-
-   Note: this function is not currently usable from outside the CPython
-   implementation, as it must be called prior to the implicit import of
-   :mod:`warnings` in :c:func:`Py_Initialize` to be effective, but can't be
-   called until enough of the runtime has been initialized to permit the
-   creation of Unicode objects.
-
-   .. deprecated:: 3.11
-
-.. c:function:: void PySys_SetPath(const wchar_t *path)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.module_search_paths` and
-   :c:member:`PyConfig.module_search_paths_set` should be used instead, see
-   :ref:`Python Initialization Configuration <init-config>`.
-
-   Set :data:`sys.path` to a list object of paths found in *path* which should
-   be a list of paths separated with the platform's search path delimiter
-   (``:`` on Unix, ``;`` on Windows).
-
-   .. deprecated:: 3.11
+   .. deprecated-removed:: 3.13 3.15
+      Clear :data:`sys.warnoptions` and :data:`!warnings.filters` instead.
 
 .. c:function:: void PySys_WriteStdout(const char *format, ...)
 
@@ -313,20 +277,6 @@ accessible to C code.  They all work with the current interpreter thread's
 
    .. versionadded:: 3.2
 
-.. c:function:: void PySys_AddXOption(const wchar_t *s)
-
-   This API is kept for backward compatibility: setting
-   :c:member:`PyConfig.xoptions` should be used instead, see :ref:`Python
-   Initialization Configuration <init-config>`.
-
-   Parse *s* as a set of :option:`-X` options and add them to the current
-   options mapping as returned by :c:func:`PySys_GetXOptions`. This function
-   may be called prior to :c:func:`Py_Initialize`.
-
-   .. versionadded:: 3.2
-
-   .. deprecated:: 3.11
-
 .. c:function:: PyObject *PySys_GetXOptions()
 
    Return the current dictionary of :option:`-X` options, similarly to
@@ -341,19 +291,24 @@ accessible to C code.  They all work with the current interpreter thread's
    Raise an auditing event with any active hooks. Return zero for success
    and non-zero with an exception set on failure.
 
+   The *event* string argument must not be *NULL*.
+
    If any hooks have been added, *format* and other arguments will be used
    to construct a tuple to pass. Apart from ``N``, the same format characters
    as used in :c:func:`Py_BuildValue` are available. If the built value is not
-   a tuple, it will be added into a single-element tuple. (The ``N`` format
-   option consumes a reference, but since there is no way to know whether
-   arguments to this function will be consumed, using it may cause reference
-   leaks.)
+   a tuple, it will be added into a single-element tuple.
+
+   The ``N`` format option must not be used. It consumes a reference, but since
+   there is no way to know whether arguments to this function will be consumed,
+   using it may cause reference leaks.
 
    Note that ``#`` format characters should always be treated as
    :c:type:`Py_ssize_t`, regardless of whether ``PY_SSIZE_T_CLEAN`` was defined.
 
    :func:`sys.audit` performs the same function from Python code.
 
+   See also :c:func:`PySys_AuditTuple`.
+
    .. versionadded:: 3.8
 
    .. versionchanged:: 3.8.2
@@ -362,6 +317,14 @@ accessible to C code.  They all work with the current interpreter thread's
       unavoidable deprecation warning was raised.
 
 
+.. c:function:: int PySys_AuditTuple(const char *event, PyObject *args)
+
+   Similar to :c:func:`PySys_Audit`, but pass arguments as a Python object.
+   *args* must be a :class:`tuple`. To pass no arguments, *args* can be *NULL*.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: int PySys_AddAuditHook(Py_AuditHookFunction hook, void *userData)
 
    Append the callable *hook* to the list of active auditing hooks.
@@ -414,7 +377,7 @@ Process Control
    This function should only be invoked when a condition is detected that would
    make it dangerous to continue using the Python interpreter; e.g., when the
    object administration appears to be corrupted.  On Unix, the standard C library
-   function :c:func:`abort` is called which will attempt to produce a :file:`core`
+   function :c:func:`!abort` is called which will attempt to produce a :file:`core`
    file.
 
    The ``Py_FatalError()`` function is replaced with a macro which logs
diff --git a/Doc/c-api/tuple.rst b/Doc/c-api/tuple.rst
index ac62058676eeeb..b3710560ebe7ac 100644
--- a/Doc/c-api/tuple.rst
+++ b/Doc/c-api/tuple.rst
@@ -89,6 +89,9 @@ Tuple Objects
    Like :c:func:`PyTuple_SetItem`, but does no error checking, and should *only* be
    used to fill in brand new tuples.
 
+   Bounds checking is performed as an assertion if Python is built in
+   :ref:`debug mode <debug-build>` or :option:`with assertions <--with-assertions>`.
+
    .. note::
 
       This function "steals" a reference to *o*, and, unlike
@@ -111,6 +114,8 @@ Tuple Objects
    raises :exc:`MemoryError` or :exc:`SystemError`.
 
 
+.. _struct-sequence-objects:
+
 Struct Sequence Objects
 -----------------------
 
@@ -142,39 +147,39 @@ type.
 
    Contains the meta information of a struct sequence type to create.
 
-   +-------------------+------------------------------+--------------------------------------+
-   | Field             | C Type                       | Meaning                              |
-   +===================+==============================+======================================+
-   | ``name``          | ``const char *``             | name of the struct sequence type     |
-   +-------------------+------------------------------+--------------------------------------+
-   | ``doc``           | ``const char *``             | pointer to docstring for the type    |
-   |                   |                              | or ``NULL`` to omit                  |
-   +-------------------+------------------------------+--------------------------------------+
-   | ``fields``        | ``PyStructSequence_Field *`` | pointer to ``NULL``-terminated array |
-   |                   |                              | with field names of the new type     |
-   +-------------------+------------------------------+--------------------------------------+
-   | ``n_in_sequence`` | ``int``                      | number of fields visible to the      |
-   |                   |                              | Python side (if used as tuple)       |
-   +-------------------+------------------------------+--------------------------------------+
+   .. c:member:: const char *name
+
+      Name of the struct sequence type.
+
+   .. c:member:: const char *doc
+
+      Pointer to docstring for the type or ``NULL`` to omit.
+
+   .. c:member:: PyStructSequence_Field *fields
+
+      Pointer to ``NULL``-terminated array with field names of the new type.
+
+   .. c:member:: int n_in_sequence
+
+      Number of fields visible to the Python side (if used as tuple).
 
 
 .. c:type:: PyStructSequence_Field
 
    Describes a field of a struct sequence. As a struct sequence is modeled as a
    tuple, all fields are typed as :c:expr:`PyObject*`.  The index in the
-   :attr:`fields` array of the :c:type:`PyStructSequence_Desc` determines which
+   :c:member:`~PyStructSequence_Desc.fields` array of
+   the :c:type:`PyStructSequence_Desc` determines which
    field of the struct sequence is described.
 
-   +-----------+------------------+-----------------------------------------+
-   | Field     | C Type           | Meaning                                 |
-   +===========+==================+=========================================+
-   | ``name``  | ``const char *`` | name for the field or ``NULL`` to end   |
-   |           |                  | the list of named fields, set to        |
-   |           |                  | :c:data:`PyStructSequence_UnnamedField` |
-   |           |                  | to leave unnamed                        |
-   +-----------+------------------+-----------------------------------------+
-   | ``doc``   | ``const char *`` | field docstring or ``NULL`` to omit     |
-   +-----------+------------------+-----------------------------------------+
+   .. c:member:: const char *name
+
+      Name for the field or ``NULL`` to end the list of named fields,
+      set to :c:data:`PyStructSequence_UnnamedField` to leave unnamed.
+
+   .. c:member:: const char *doc
+
+      Field docstring or ``NULL`` to omit.
 
 
 .. c:var:: const char * const PyStructSequence_UnnamedField
@@ -194,12 +199,17 @@ type.
 .. c:function:: PyObject* PyStructSequence_GetItem(PyObject *p, Py_ssize_t pos)
 
    Return the object at position *pos* in the struct sequence pointed to by *p*.
-   No bounds checking is performed.
+
+   Bounds checking is performed as an assertion if Python is built in
+   :ref:`debug mode <debug-build>` or :option:`with assertions <--with-assertions>`.
 
 
 .. c:function:: PyObject* PyStructSequence_GET_ITEM(PyObject *p, Py_ssize_t pos)
 
-   Macro equivalent of :c:func:`PyStructSequence_GetItem`.
+   Alias to :c:func:`PyStructSequence_GetItem`.
+
+   .. versionchanged:: 3.13
+      Now implemented as an alias to :c:func:`PyStructSequence_GetItem`.
 
 
 .. c:function:: void PyStructSequence_SetItem(PyObject *p, Py_ssize_t pos, PyObject *o)
@@ -208,6 +218,9 @@ type.
    :c:func:`PyTuple_SET_ITEM`, this should only be used to fill in brand new
    instances.
 
+   Bounds checking is performed as an assertion if Python is built in
+   :ref:`debug mode <debug-build>` or :option:`with assertions <--with-assertions>`.
+
    .. note::
 
       This function "steals" a reference to *o*.
@@ -215,9 +228,7 @@ type.
 
 .. c:function:: void PyStructSequence_SET_ITEM(PyObject *p, Py_ssize_t *pos, PyObject *o)
 
-   Similar to :c:func:`PyStructSequence_SetItem`, but implemented as a static
-   inlined function.
-
-   .. note::
+   Alias to :c:func:`PyStructSequence_SetItem`.
 
-      This function "steals" a reference to *o*.
+   .. versionchanged:: 3.13
+      Now implemented as an alias to :c:func:`PyStructSequence_SetItem`.
diff --git a/Doc/c-api/type.rst b/Doc/c-api/type.rst
index fb38935e003336..5aaa8147dd3176 100644
--- a/Doc/c-api/type.rst
+++ b/Doc/c-api/type.rst
@@ -42,7 +42,7 @@ Type Objects
    Return the :c:member:`~PyTypeObject.tp_flags` member of *type*. This function is primarily
    meant for use with ``Py_LIMITED_API``; the individual flag bits are
    guaranteed to be stable across Python releases, but access to
-   :c:member:`~PyTypeObject.tp_flags` itself is not part of the limited API.
+   :c:member:`~PyTypeObject.tp_flags` itself is not part of the :ref:`limited API <limited-c-api>`.
 
    .. versionadded:: 3.2
 
@@ -50,6 +50,23 @@ Type Objects
       The return type is now ``unsigned long`` rather than ``long``.
 
 
+.. c:function:: PyObject* PyType_GetDict(PyTypeObject* type)
+
+   Return the type object's internal namespace, which is otherwise only
+   exposed via a read-only proxy (``cls.__dict__``).  This is a
+   replacement for accessing :c:member:`~PyTypeObject.tp_dict` directly.
+   The returned dictionary must be treated as read-only.
+
+   This function is meant for specific embedding and language-binding cases,
+   where direct access to the dict is necessary and indirect access
+   (e.g. via the proxy or :c:func:`PyObject_GetAttr`) isn't adequate.
+
+   Extension modules should continue to use ``tp_dict``,
+   directly or indirectly, when setting up their own types.
+
+   .. versionadded:: 3.12
+
+
 .. c:function:: void PyType_Modified(PyTypeObject *type)
 
    Invalidate the internal lookup cache for the type and all of its
@@ -86,7 +103,7 @@ Type Objects
    :c:func:`PyType_AddWatcher` will be called whenever
    :c:func:`PyType_Modified` reports a change to *type*. (The callback may be
    called only once for a series of consecutive modifications to *type*, if
-   :c:func:`PyType_Lookup` is not called on *type* between the modifications;
+   :c:func:`!_PyType_Lookup` is not called on *type* between the modifications;
    this is an implementation detail and subject to change.)
 
    An extension should never call ``PyType_Watch`` with a *watcher_id* that was
@@ -115,7 +132,7 @@ Type Objects
 .. c:function:: int PyType_IS_GC(PyTypeObject *o)
 
    Return true if the type object includes support for the cycle detector; this
-   tests the type flag :const:`Py_TPFLAGS_HAVE_GC`.
+   tests the type flag :c:macro:`Py_TPFLAGS_HAVE_GC`.
 
 
 .. c:function:: int PyType_IsSubtype(PyTypeObject *a, PyTypeObject *b)
@@ -148,10 +165,10 @@ Type Objects
 
    .. note::
        If some of the base classes implements the GC protocol and the provided
-       type does not include the :const:`Py_TPFLAGS_HAVE_GC` in its flags, then
+       type does not include the :c:macro:`Py_TPFLAGS_HAVE_GC` in its flags, then
        the GC protocol will be automatically implemented from its parents. On
        the contrary, if the type being created does include
-       :const:`Py_TPFLAGS_HAVE_GC` in its flags then it **must** implement the
+       :c:macro:`Py_TPFLAGS_HAVE_GC` in its flags then it **must** implement the
        GC protocol itself by at least implementing the
        :c:member:`~PyTypeObject.tp_traverse` handle.
 
@@ -198,7 +215,7 @@ Type Objects
    ``Py_TYPE(self)`` may be a *subclass* of the intended class, and subclasses
    are not necessarily defined in the same module as their superclass.
    See :c:type:`PyCMethod` to get the class that defines the method.
-   See :c:func:`PyType_GetModuleByDef` for cases when ``PyCMethod`` cannot
+   See :c:func:`PyType_GetModuleByDef` for cases when :c:type:`!PyCMethod` cannot
    be used.
 
    .. versionadded:: 3.9
@@ -251,14 +268,14 @@ The following functions and structs are used to create
 .. c:function:: PyObject* PyType_FromMetaclass(PyTypeObject *metaclass, PyObject *module, PyType_Spec *spec, PyObject *bases)
 
    Create and return a :ref:`heap type <heap-types>` from the *spec*
-   (see :const:`Py_TPFLAGS_HEAPTYPE`).
+   (see :c:macro:`Py_TPFLAGS_HEAPTYPE`).
 
    The metaclass *metaclass* is used to construct the resulting type object.
    When *metaclass* is ``NULL``, the metaclass is derived from *bases*
    (or *Py_tp_base[s]* slots if *bases* is ``NULL``, see below).
 
    Metaclasses that override :c:member:`~PyTypeObject.tp_new` are not
-   supported.
+   supported, except if ``tp_new`` is ``NULL``.
    (For backwards compatibility, other ``PyType_From*`` functions allow
    such metaclasses. They ignore ``tp_new``, which may result in incomplete
    initialization. This is deprecated and in Python 3.14+ such metaclasses will
@@ -349,6 +366,15 @@ The following functions and structs are used to create
       :c:member:`~PyTypeObject.tp_new` is deprecated and in Python 3.14+ it
       will be no longer allowed.
 
+.. raw:: html
+
+   <!-- Keep old URL fragments working (see gh-97908) -->
+   <span id='c.PyType_Spec.PyType_Spec.name'></span>
+   <span id='c.PyType_Spec.PyType_Spec.basicsize'></span>
+   <span id='c.PyType_Spec.PyType_Spec.itemsize'></span>
+   <span id='c.PyType_Spec.PyType_Spec.flags'></span>
+   <span id='c.PyType_Spec.PyType_Spec.slots'></span>
+
 .. c:type:: PyType_Spec
 
    Structure defining a type's behavior.
@@ -394,7 +420,7 @@ The following functions and structs are used to create
       - The requested :c:member:`PyType_Spec.basicsize` is zero,
         suggesting that the subclass does not access the instance's memory
         directly.
-      - With the :const:`Py_TPFLAGS_ITEMS_AT_END` flag.
+      - With the :c:macro:`Py_TPFLAGS_ITEMS_AT_END` flag.
 
    .. c:member:: unsigned int flags
 
@@ -410,12 +436,18 @@ The following functions and structs are used to create
 
       Each slot ID should be specified at most once.
 
+.. raw:: html
+
+   <!-- Keep old URL fragments working (see gh-97908) -->
+   <span id='c.PyType_Slot.PyType_Slot.slot'></span>
+   <span id='c.PyType_Slot.PyType_Slot.pfunc'></span>
+
 .. c:type:: PyType_Slot
 
    Structure defining optional functionality of a type, containing a slot ID
    and a value pointer.
 
-   .. c:member:: int PyType_Slot.slot
+   .. c:member:: int slot
 
       A slot ID.
 
@@ -429,26 +461,39 @@ The following functions and structs are used to create
       * ``Py_nb_add`` to set :c:member:`PyNumberMethods.nb_add`
       * ``Py_sq_length`` to set :c:member:`PySequenceMethods.sq_length`
 
-      The following fields cannot be set at all using :c:type:`PyType_Spec` and
-      :c:type:`PyType_Slot`:
+      The following “offset� fields cannot be set using :c:type:`PyType_Slot`:
+
+         * :c:member:`~PyTypeObject.tp_weaklistoffset`
+           (use :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead if possible)
+         * :c:member:`~PyTypeObject.tp_dictoffset`
+           (use :c:macro:`Py_TPFLAGS_MANAGED_DICT` instead if possible)
+         * :c:member:`~PyTypeObject.tp_vectorcall_offset`
+           (use ``"__vectorcalloffset__"`` in
+           :ref:`PyMemberDef <pymemberdef-offsets>`)
+
+         If it is not possible to switch to a ``MANAGED`` flag (for example,
+         for vectorcall or to support Python older than 3.12), specify the
+         offset in :c:member:`Py_tp_members <PyTypeObject.tp_members>`.
+         See :ref:`PyMemberDef documentation <pymemberdef-offsets>`
+         for details.
+
+      The following fields cannot be set at all when creating a heap type:
 
-      * :c:member:`~PyTypeObject.tp_dict`
-      * :c:member:`~PyTypeObject.tp_mro`
-      * :c:member:`~PyTypeObject.tp_cache`
-      * :c:member:`~PyTypeObject.tp_subclasses`
-      * :c:member:`~PyTypeObject.tp_weaklist`
       * :c:member:`~PyTypeObject.tp_vectorcall`
-      * :c:member:`~PyTypeObject.tp_weaklistoffset`
-        (use :const:`Py_TPFLAGS_MANAGED_WEAKREF` instead)
-      * :c:member:`~PyTypeObject.tp_dictoffset`
-        (use :const:`Py_TPFLAGS_MANAGED_DICT` instead)
-      * :c:member:`~PyTypeObject.tp_vectorcall_offset`
-        (see :ref:`PyMemberDef <pymemberdef-offsets>`)
+        (use :c:member:`~PyTypeObject.tp_new` and/or
+        :c:member:`~PyTypeObject.tp_init`)
+
+      * Internal fields:
+        :c:member:`~PyTypeObject.tp_dict`,
+        :c:member:`~PyTypeObject.tp_mro`,
+        :c:member:`~PyTypeObject.tp_cache`,
+        :c:member:`~PyTypeObject.tp_subclasses`, and
+        :c:member:`~PyTypeObject.tp_weaklist`.
 
       Setting :c:data:`Py_tp_bases` or :c:data:`Py_tp_base` may be
       problematic on some platforms.
       To avoid issues, use the *bases* argument of
-      :py:func:`PyType_FromSpecWithBases` instead.
+      :c:func:`PyType_FromSpecWithBases` instead.
 
      .. versionchanged:: 3.9
 
@@ -457,9 +502,9 @@ The following functions and structs are used to create
      .. versionchanged:: 3.11
         :c:member:`~PyBufferProcs.bf_getbuffer` and
         :c:member:`~PyBufferProcs.bf_releasebuffer` are now available
-        under the limited API.
+        under the :ref:`limited API <limited-c-api>`.
 
-   .. c:member:: void *PyType_Slot.pfunc
+   .. c:member:: void *pfunc
 
       The desired value of the slot. In most cases, this is a pointer
       to a function.
diff --git a/Doc/c-api/typehints.rst b/Doc/c-api/typehints.rst
index 4c1957a2a1dbca..98fe68737deb81 100644
--- a/Doc/c-api/typehints.rst
+++ b/Doc/c-api/typehints.rst
@@ -35,7 +35,7 @@ two types exist -- :ref:`GenericAlias <types-genericalias>` and
           ...
       }
 
-   .. seealso:: The data model method :meth:`__class_getitem__`.
+   .. seealso:: The data model method :meth:`~object.__class_getitem__`.
 
    .. versionadded:: 3.9
 
diff --git a/Doc/c-api/typeobj.rst b/Doc/c-api/typeobj.rst
index 0584989233de3f..8a26f237652d12 100644
--- a/Doc/c-api/typeobj.rst
+++ b/Doc/c-api/typeobj.rst
@@ -147,7 +147,7 @@ Quick Reference
    +------------------------------------------------+-----------------------------------+-------------------+---+---+---+---+
    | :c:member:`~PyTypeObject.tp_vectorcall`        | :c:type:`vectorcallfunc`          |                   |   |   |   |   |
    +------------------------------------------------+-----------------------------------+-------------------+---+---+---+---+
-   | [:c:member:`~PyTypeObject.tp_watched`]         | char                              |                   |   |   |   |   |
+   | [:c:member:`~PyTypeObject.tp_watched`]         | unsigned char                     |                   |   |   |   |   |
    +------------------------------------------------+-----------------------------------+-------------------+---+---+---+---+
 
 .. [#slots]
@@ -163,9 +163,9 @@ Quick Reference
 
 .. [#cols] Columns:
 
-   **"O"**:  set on :c:type:`PyBaseObject_Type`
+   **"O"**:  set on :c:data:`PyBaseObject_Type`
 
-   **"T"**:  set on :c:type:`PyType_Type`
+   **"T"**:  set on :c:data:`PyType_Type`
 
    **"D"**:  default (if slot is set to ``NULL``)
 
@@ -343,13 +343,13 @@ slot typedefs
 |                             |    :c:type:`PyTypeObject` * |                      |
 |                             |    :c:type:`Py_ssize_t`     |                      |
 +-----------------------------+-----------------------------+----------------------+
-| :c:type:`destructor`        | void *                      | void                 |
+| :c:type:`destructor`        | :c:type:`PyObject` *        | void                 |
 +-----------------------------+-----------------------------+----------------------+
 | :c:type:`freefunc`          | void *                      | void                 |
 +-----------------------------+-----------------------------+----------------------+
 | :c:type:`traverseproc`      | .. line-block::             | int                  |
 |                             |                             |                      |
-|                             |    void *                   |                      |
+|                             |    :c:type:`PyObject` *     |                      |
 |                             |    :c:type:`visitproc`      |                      |
 |                             |    void *                   |                      |
 +-----------------------------+-----------------------------+----------------------+
@@ -426,7 +426,7 @@ slot typedefs
 |                             |    :c:type:`PyObject` *     |                      |
 |                             |    :c:type:`Py_buffer` *    |                      |
 +-----------------------------+-----------------------------+----------------------+
-| :c:type:`inquiry`           | void *                      | int                  |
+| :c:type:`inquiry`           | :c:type:`PyObject` *        | int                  |
 +-----------------------------+-----------------------------+----------------------+
 | :c:type:`unaryfunc`         | .. line-block::             | :c:type:`PyObject` * |
 |                             |                             |                      |
@@ -485,17 +485,17 @@ PyObject Slots
 --------------
 
 The type object structure extends the :c:type:`PyVarObject` structure. The
-:attr:`ob_size` field is used for dynamic types (created by :func:`type_new`,
+:c:member:`~PyVarObject.ob_size` field is used for dynamic types (created by :c:func:`!type_new`,
 usually called from a class statement). Note that :c:data:`PyType_Type` (the
 metatype) initializes :c:member:`~PyTypeObject.tp_itemsize`, which means that its instances (i.e.
-type objects) *must* have the :attr:`ob_size` field.
+type objects) *must* have the :c:member:`~PyVarObject.ob_size` field.
 
 
 .. c:member:: Py_ssize_t PyObject.ob_refcnt
 
    This is the type object's reference count, initialized to ``1`` by the
    ``PyObject_HEAD_INIT`` macro.  Note that for :ref:`statically allocated type
-   objects <static-types>`, the type's instances (objects whose :attr:`ob_type`
+   objects <static-types>`, the type's instances (objects whose :c:member:`~PyObject.ob_type`
    points back to the type) do *not* count as references.  But for
    :ref:`dynamically allocated type objects <heap-types>`, the instances *do*
    count as references.
@@ -519,8 +519,8 @@ type objects) *must* have the :attr:`ob_size` field.
       Foo_Type.ob_type = &PyType_Type;
 
    This should be done before any instances of the type are created.
-   :c:func:`PyType_Ready` checks if :attr:`ob_type` is ``NULL``, and if so,
-   initializes it to the :attr:`ob_type` field of the base class.
+   :c:func:`PyType_Ready` checks if :c:member:`~PyObject.ob_type` is ``NULL``, and if so,
+   initializes it to the :c:member:`~PyObject.ob_type` field of the base class.
    :c:func:`PyType_Ready` will not change this field if it is non-zero.
 
    **Inheritance:**
@@ -528,28 +528,6 @@ type objects) *must* have the :attr:`ob_size` field.
    This field is inherited by subtypes.
 
 
-.. c:member:: PyObject* PyObject._ob_next
-             PyObject* PyObject._ob_prev
-
-   These fields are only present when the macro ``Py_TRACE_REFS`` is defined
-   (see the :option:`configure --with-trace-refs option <--with-trace-refs>`).
-
-   Their initialization to ``NULL`` is taken care of by the
-   ``PyObject_HEAD_INIT`` macro.  For :ref:`statically allocated objects
-   <static-types>`, these fields always remain ``NULL``.  For :ref:`dynamically
-   allocated objects <heap-types>`, these two fields are used to link the
-   object into a doubly linked list of *all* live objects on the heap.
-
-   This could be used for various debugging purposes; currently the only uses
-   are the :func:`sys.getobjects` function and to print the objects that are
-   still alive at the end of a run when the environment variable
-   :envvar:`PYTHONDUMPREFS` is set.
-
-   **Inheritance:**
-
-   These fields are not inherited by subtypes.
-
-
 PyVarObject Slots
 -----------------
 
@@ -569,8 +547,8 @@ PyTypeObject Slots
 
 Each slot has a section describing inheritance.  If :c:func:`PyType_Ready`
 may set a value when the field is set to ``NULL`` then there will also be
-a "Default" section.  (Note that many fields set on :c:type:`PyBaseObject_Type`
-and :c:type:`PyType_Type` effectively act as defaults.)
+a "Default" section.  (Note that many fields set on :c:data:`PyBaseObject_Type`
+and :c:data:`PyType_Type` effectively act as defaults.)
 
 .. c:member:: const char* PyTypeObject.tp_name
 
@@ -579,7 +557,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    name, followed by a dot, followed by the type name; for built-in types, it
    should be just the type name.  If the module is a submodule of a package, the
    full package name is part of the full module name.  For example, a type named
-   :class:`T` defined in module :mod:`M` in subpackage :mod:`Q` in package :mod:`P`
+   :class:`!T` defined in module :mod:`!M` in subpackage :mod:`!Q` in package :mod:`!P`
    should have the :c:member:`~PyTypeObject.tp_name` initializer ``"P.Q.M.T"``.
 
    For :ref:`dynamically allocated type objects <heap-types>`,
@@ -619,20 +597,20 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    instances have the same size, given in :c:member:`~PyTypeObject.tp_basicsize`.
 
    For a type with variable-length instances, the instances must have an
-   :attr:`ob_size` field, and the instance size is :c:member:`~PyTypeObject.tp_basicsize` plus N
+   :c:member:`~PyVarObject.ob_size` field, and the instance size is :c:member:`~PyTypeObject.tp_basicsize` plus N
    times :c:member:`~PyTypeObject.tp_itemsize`, where N is the "length" of the object.  The value of
-   N is typically stored in the instance's :attr:`ob_size` field.  There are
-   exceptions:  for example, ints use a negative :attr:`ob_size` to indicate a
+   N is typically stored in the instance's :c:member:`~PyVarObject.ob_size` field.  There are
+   exceptions:  for example, ints use a negative :c:member:`~PyVarObject.ob_size` to indicate a
    negative number, and N is ``abs(ob_size)`` there.  Also, the presence of an
-   :attr:`ob_size` field in the instance layout doesn't mean that the instance
+   :c:member:`~PyVarObject.ob_size` field in the instance layout doesn't mean that the instance
    structure is variable-length (for example, the structure for the list type has
-   fixed-length instances, yet those instances have a meaningful :attr:`ob_size`
+   fixed-length instances, yet those instances have a meaningful :c:member:`~PyVarObject.ob_size`
    field).
 
    The basic size includes the fields in the instance declared by the macro
    :c:macro:`PyObject_HEAD` or :c:macro:`PyObject_VAR_HEAD` (whichever is used to
-   declare the instance struct) and this in turn includes the :attr:`_ob_prev` and
-   :attr:`_ob_next` fields if they are present.  This means that the only correct
+   declare the instance struct) and this in turn includes the  :c:member:`~PyObject._ob_prev` and
+   :c:member:`~PyObject._ob_next` fields if they are present.  This means that the only correct
    way to get an initializer for the :c:member:`~PyTypeObject.tp_basicsize` is to use the
    ``sizeof`` operator on the struct used to declare the instance layout.
    The basic size does not include the GC header size.
@@ -669,15 +647,15 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    memory buffers owned by the instance (using the freeing function corresponding
    to the allocation function used to allocate the buffer), and call the type's
    :c:member:`~PyTypeObject.tp_free` function.  If the type is not subtypable
-   (doesn't have the :const:`Py_TPFLAGS_BASETYPE` flag bit set), it is
+   (doesn't have the :c:macro:`Py_TPFLAGS_BASETYPE` flag bit set), it is
    permissible to call the object deallocator directly instead of via
    :c:member:`~PyTypeObject.tp_free`.  The object deallocator should be the one used to allocate the
    instance; this is normally :c:func:`PyObject_Del` if the instance was allocated
-   using :c:func:`PyObject_New` or :c:func:`PyObject_VarNew`, or
+   using :c:macro:`PyObject_New` or :c:macro:`PyObject_NewVar`, or
    :c:func:`PyObject_GC_Del` if the instance was allocated using
-   :c:func:`PyObject_GC_New` or :c:func:`PyObject_GC_NewVar`.
+   :c:macro:`PyObject_GC_New` or :c:macro:`PyObject_GC_NewVar`.
 
-   If the type supports garbage collection (has the :const:`Py_TPFLAGS_HAVE_GC`
+   If the type supports garbage collection (has the :c:macro:`Py_TPFLAGS_HAVE_GC`
    flag bit set), the destructor should call :c:func:`PyObject_GC_UnTrack`
    before clearing any member fields.
 
@@ -689,8 +667,9 @@ and :c:type:`PyType_Type` effectively act as defaults.)
          Py_TYPE(self)->tp_free((PyObject *)self);
      }
 
-   Finally, if the type is heap allocated (:const:`Py_TPFLAGS_HEAPTYPE`), the
-   deallocator should decrement the reference count for its type object after
+   Finally, if the type is heap allocated (:c:macro:`Py_TPFLAGS_HEAPTYPE`), the
+   deallocator should release the owned reference to its type object
+   (via :c:func:`Py_DECREF`)  after
    calling the type deallocator. In order to avoid dangling pointers, the
    recommended way to achieve this is:
 
@@ -716,12 +695,12 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    a more efficient alternative
    of the simpler :c:member:`~PyTypeObject.tp_call`.
 
-   This field is only used if the flag :const:`Py_TPFLAGS_HAVE_VECTORCALL`
+   This field is only used if the flag :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL`
    is set. If so, this must be a positive integer containing the offset in the
    instance of a :c:type:`vectorcallfunc` pointer.
 
    The *vectorcallfunc* pointer may be ``NULL``, in which case the instance behaves
-   as if :const:`Py_TPFLAGS_HAVE_VECTORCALL` was not set: calling the instance
+   as if :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` was not set: calling the instance
    falls back to :c:member:`~PyTypeObject.tp_call`.
 
    Any class that sets ``Py_TPFLAGS_HAVE_VECTORCALL`` must also set
@@ -740,15 +719,15 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       Before version 3.12, it was not recommended for
       :ref:`mutable heap types <heap-types>` to implement the vectorcall
       protocol.
-      When a user sets :attr:`~type.__call__` in Python code, only *tp_call* is
+      When a user sets :attr:`~object.__call__` in Python code, only *tp_call* is
       updated, likely making it inconsistent with the vectorcall function.
       Since 3.12, setting ``__call__`` will disable vectorcall optimization
-      by clearing the :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag.
+      by clearing the :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag.
 
    **Inheritance:**
 
    This field is always inherited.
-   However, the :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag is not
+   However, the :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag is not
    always inherited. If it's not set, then the subclass won't use
    :ref:`vectorcall <vectorcall>`, except when
    :c:func:`PyVectorcall_Call` is explicitly called.
@@ -764,7 +743,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :attr:`tp_getattr`, :attr:`tp_getattro`
+   Group: :c:member:`~PyTypeObject.tp_getattr`, :c:member:`~PyTypeObject.tp_getattro`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_getattro`: a subtype
    inherits both :c:member:`~PyTypeObject.tp_getattr` and :c:member:`~PyTypeObject.tp_getattro` from its base type when
@@ -781,7 +760,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :attr:`tp_setattr`, :attr:`tp_setattro`
+   Group: :c:member:`~PyTypeObject.tp_setattr`, :c:member:`~PyTypeObject.tp_setattro`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_setattro`: a subtype
    inherits both :c:member:`~PyTypeObject.tp_setattr` and :c:member:`~PyTypeObject.tp_setattro` from its base type when
@@ -883,7 +862,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    normal return value; when an error occurs during the computation of the hash
    value, the function should set an exception and return ``-1``.
 
-   When this field is not set (*and* :attr:`tp_richcompare` is not set),
+   When this field is not set (*and* :c:member:`~PyTypeObject.tp_richcompare` is not set),
    an attempt to take the hash of the object raises :exc:`TypeError`.
    This is the same as setting it to :c:func:`PyObject_HashNotImplemented`.
 
@@ -897,7 +876,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :attr:`tp_hash`, :attr:`tp_richcompare`
+   Group: :c:member:`~PyTypeObject.tp_hash`, :c:member:`~PyTypeObject.tp_richcompare`
 
    This field is inherited by subtypes together with
    :c:member:`~PyTypeObject.tp_richcompare`: a subtype inherits both of
@@ -956,7 +935,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :attr:`tp_getattr`, :attr:`tp_getattro`
+   Group: :c:member:`~PyTypeObject.tp_getattr`, :c:member:`~PyTypeObject.tp_getattro`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_getattr`: a subtype
    inherits both :c:member:`~PyTypeObject.tp_getattr` and :c:member:`~PyTypeObject.tp_getattro` from its base type when
@@ -964,7 +943,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Default:**
 
-   :c:type:`PyBaseObject_Type` uses :c:func:`PyObject_GenericGetAttr`.
+   :c:data:`PyBaseObject_Type` uses :c:func:`PyObject_GenericGetAttr`.
 
 
 .. c:member:: setattrofunc PyTypeObject.tp_setattro
@@ -982,7 +961,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :attr:`tp_setattr`, :attr:`tp_setattro`
+   Group: :c:member:`~PyTypeObject.tp_setattr`, :c:member:`~PyTypeObject.tp_setattro`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_setattr`: a subtype
    inherits both :c:member:`~PyTypeObject.tp_setattr` and :c:member:`~PyTypeObject.tp_setattro` from its base type when
@@ -990,7 +969,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Default:**
 
-   :c:type:`PyBaseObject_Type` uses :c:func:`PyObject_GenericSetAttr`.
+   :c:data:`PyBaseObject_Type` uses :c:func:`PyObject_GenericSetAttr`.
 
 
 .. c:member:: PyBufferProcs* PyTypeObject.tp_as_buffer
@@ -1022,30 +1001,32 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    this flag bit.  The flag bits that pertain to extension structures are strictly
    inherited if the extension structure is inherited, i.e. the base type's value of
    the flag bit is copied into the subtype together with a pointer to the extension
-   structure.  The :const:`Py_TPFLAGS_HAVE_GC` flag bit is inherited together with
+   structure.  The :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit is inherited together with
    the :c:member:`~PyTypeObject.tp_traverse` and :c:member:`~PyTypeObject.tp_clear` fields, i.e. if the
-   :const:`Py_TPFLAGS_HAVE_GC` flag bit is clear in the subtype and the
+   :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit is clear in the subtype and the
    :c:member:`~PyTypeObject.tp_traverse` and :c:member:`~PyTypeObject.tp_clear` fields in the subtype exist and have
    ``NULL`` values.
    .. XXX are most flag bits *really* inherited individually?
 
    **Default:**
 
-   :c:type:`PyBaseObject_Type` uses
+   :c:data:`PyBaseObject_Type` uses
    ``Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE``.
 
    **Bit Masks:**
 
+   .. c:namespace:: NULL
+
    The following bit masks are currently defined; these can be ORed together using
    the ``|`` operator to form the value of the :c:member:`~PyTypeObject.tp_flags` field.  The macro
    :c:func:`PyType_HasFeature` takes a type and a flags value, *tp* and *f*, and
    checks whether ``tp->tp_flags & f`` is non-zero.
 
-   .. data:: Py_TPFLAGS_HEAPTYPE
+   .. c:macro:: Py_TPFLAGS_HEAPTYPE
 
       This bit is set when the type object itself is allocated on the heap, for
       example, types created dynamically using :c:func:`PyType_FromSpec`.  In this
-      case, the :attr:`ob_type` field of its instances is considered a reference to
+      case, the :c:member:`~PyObject.ob_type` field of its instances is considered a reference to
       the type, and the type object is INCREF'ed when a new instance is created, and
       DECREF'ed when an instance is destroyed (this does not apply to instances of
       subtypes; only the type referenced by the instance's ob_type gets INCREF'ed or
@@ -1056,7 +1037,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       ???
 
 
-   .. data:: Py_TPFLAGS_BASETYPE
+   .. c:macro:: Py_TPFLAGS_BASETYPE
 
       This bit is set when the type can be used as the base type of another type.  If
       this bit is clear, the type cannot be subtyped (similar to a "final" class in
@@ -1067,7 +1048,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       ???
 
 
-   .. data:: Py_TPFLAGS_READY
+   .. c:macro:: Py_TPFLAGS_READY
 
       This bit is set when the type object has been fully initialized by
       :c:func:`PyType_Ready`.
@@ -1077,7 +1058,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       ???
 
 
-   .. data:: Py_TPFLAGS_READYING
+   .. c:macro:: Py_TPFLAGS_READYING
 
       This bit is set while :c:func:`PyType_Ready` is in the process of initializing
       the type object.
@@ -1087,10 +1068,10 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       ???
 
 
-   .. data:: Py_TPFLAGS_HAVE_GC
+   .. c:macro:: Py_TPFLAGS_HAVE_GC
 
       This bit is set when the object supports garbage collection.  If this bit
-      is set, instances must be created using :c:func:`PyObject_GC_New` and
+      is set, instances must be created using :c:macro:`PyObject_GC_New` and
       destroyed using :c:func:`PyObject_GC_Del`.  More information in section
       :ref:`supporting-cycle-detection`.  This bit also implies that the
       GC-related fields :c:member:`~PyTypeObject.tp_traverse` and :c:member:`~PyTypeObject.tp_clear` are present in
@@ -1098,28 +1079,28 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
       **Inheritance:**
 
-      Group: :const:`Py_TPFLAGS_HAVE_GC`, :attr:`tp_traverse`, :attr:`tp_clear`
+      Group: :c:macro:`Py_TPFLAGS_HAVE_GC`, :c:member:`~PyTypeObject.tp_traverse`, :c:member:`~PyTypeObject.tp_clear`
 
-      The :const:`Py_TPFLAGS_HAVE_GC` flag bit is inherited
-      together with the :attr:`tp_traverse` and :attr:`tp_clear`
-      fields, i.e.  if the :const:`Py_TPFLAGS_HAVE_GC` flag bit is
-      clear in the subtype and the :attr:`tp_traverse` and
-      :attr:`tp_clear` fields in the subtype exist and have ``NULL``
+      The :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit is inherited
+      together with the :c:member:`~PyTypeObject.tp_traverse` and :c:member:`~PyTypeObject.tp_clear`
+      fields, i.e.  if the :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit is
+      clear in the subtype and the :c:member:`~PyTypeObject.tp_traverse` and
+      :c:member:`~PyTypeObject.tp_clear` fields in the subtype exist and have ``NULL``
       values.
 
 
-   .. data:: Py_TPFLAGS_DEFAULT
+   .. c:macro:: Py_TPFLAGS_DEFAULT
 
       This is a bitmask of all the bits that pertain to the existence of certain
       fields in the type object and its extension structures. Currently, it includes
-      the following bits: :const:`Py_TPFLAGS_HAVE_STACKLESS_EXTENSION`.
+      the following bits: :c:macro:`Py_TPFLAGS_HAVE_STACKLESS_EXTENSION`.
 
       **Inheritance:**
 
       ???
 
 
-   .. data:: Py_TPFLAGS_METHOD_DESCRIPTOR
+   .. c:macro:: Py_TPFLAGS_METHOD_DESCRIPTOR
 
       This bit indicates that objects behave like unbound methods.
 
@@ -1140,17 +1121,20 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       **Inheritance:**
 
       This flag is never inherited by types without the
-      :const:`Py_TPFLAGS_IMMUTABLETYPE` flag set.  For extension types, it is
+      :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` flag set.  For extension types, it is
       inherited whenever :c:member:`~PyTypeObject.tp_descr_get` is inherited.
 
-    .. data:: Py_TPFLAGS_MANAGED_DICT
+   .. c:macro:: Py_TPFLAGS_MANAGED_DICT
 
-       This bit indicates that instances of the class have a ``__dict__``
-       attribute, and that the space for the dictionary is managed by the VM.
+      This bit indicates that instances of the class have a ``__dict__``
+      attribute, and that the space for the dictionary is managed by the VM.
 
-       If this flag is set, :const:`Py_TPFLAGS_HAVE_GC` should also be set.
+      If this flag is set, :c:macro:`Py_TPFLAGS_HAVE_GC` should also be set.
 
-       .. versionadded:: 3.12
+      The type traverse function must call :c:func:`PyObject_VisitManagedDict`
+      and its clear function must call :c:func:`PyObject_ClearManagedDict`.
+
+      .. versionadded:: 3.12
 
       **Inheritance:**
 
@@ -1158,12 +1142,12 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       :c:member:`~PyTypeObject.tp_dictoffset` field is set in a superclass.
 
 
-    .. data:: Py_TPFLAGS_MANAGED_WEAKREF
+   .. c:macro:: Py_TPFLAGS_MANAGED_WEAKREF
 
-       This bit indicates that instances of the class should be weakly
-       referenceable.
+      This bit indicates that instances of the class should be weakly
+      referenceable.
 
-       .. versionadded:: 3.12
+      .. versionadded:: 3.12
 
       **Inheritance:**
 
@@ -1171,14 +1155,14 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       :c:member:`~PyTypeObject.tp_weaklistoffset` field is set in a superclass.
 
 
-   .. data:: Py_TPFLAGS_ITEMS_AT_END
+   .. c:macro:: Py_TPFLAGS_ITEMS_AT_END
 
       Only usable with variable-size types, i.e. ones with non-zero
-      :c:member:`~PyObject.tp_itemsize`.
+      :c:member:`~PyTypeObject.tp_itemsize`.
 
       Indicates that the variable-sized portion of an instance of this type is
       at the end of the instance's memory area, at an offset of
-      :c:expr:`Py_TYPE(obj)->tp_basicsize` (which may be different in each
+      ``Py_TYPE(obj)->tp_basicsize`` (which may be different in each
       subclass).
 
       When setting this flag, be sure that all superclasses either
@@ -1194,14 +1178,14 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    .. XXX Document more flags here?
 
 
-   .. data:: Py_TPFLAGS_LONG_SUBCLASS
-   .. data:: Py_TPFLAGS_LIST_SUBCLASS
-   .. data:: Py_TPFLAGS_TUPLE_SUBCLASS
-   .. data:: Py_TPFLAGS_BYTES_SUBCLASS
-   .. data:: Py_TPFLAGS_UNICODE_SUBCLASS
-   .. data:: Py_TPFLAGS_DICT_SUBCLASS
-   .. data:: Py_TPFLAGS_BASE_EXC_SUBCLASS
-   .. data:: Py_TPFLAGS_TYPE_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_LONG_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_LIST_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_TUPLE_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_BYTES_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_UNICODE_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_DICT_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_BASE_EXC_SUBCLASS
+   .. c:macro:: Py_TPFLAGS_TYPE_SUBCLASS
 
       These flags are used by functions such as
       :c:func:`PyLong_Check` to quickly determine if a type is a subclass
@@ -1212,7 +1196,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       will behave differently depending on what kind of check is used.
 
 
-   .. data:: Py_TPFLAGS_HAVE_FINALIZE
+   .. c:macro:: Py_TPFLAGS_HAVE_FINALIZE
 
       This bit is set when the :c:member:`~PyTypeObject.tp_finalize` slot is present in the
       type structure.
@@ -1225,7 +1209,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
          type structure.
 
 
-   .. data:: Py_TPFLAGS_HAVE_VECTORCALL
+   .. c:macro:: Py_TPFLAGS_HAVE_VECTORCALL
 
       This bit is set when the class implements
       the :ref:`vectorcall protocol <vectorcall>`.
@@ -1245,7 +1229,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
          This flag can now be inherited by mutable classes.
 
-   .. data:: Py_TPFLAGS_IMMUTABLETYPE
+   .. c:macro:: Py_TPFLAGS_IMMUTABLETYPE
 
       This bit is set for type objects that are immutable: type attributes cannot be set nor deleted.
 
@@ -1258,7 +1242,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
       .. versionadded:: 3.10
 
-   .. data:: Py_TPFLAGS_DISALLOW_INSTANTIATION
+   .. c:macro:: Py_TPFLAGS_DISALLOW_INSTANTIATION
 
       Disallow creating instances of the type: set
       :c:member:`~PyTypeObject.tp_new` to NULL and don't create the ``__new__``
@@ -1289,7 +1273,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       .. versionadded:: 3.10
 
 
-   .. data:: Py_TPFLAGS_MAPPING
+   .. c:macro:: Py_TPFLAGS_MAPPING
 
       This bit indicates that instances of the class may match mapping patterns
       when used as the subject of a :keyword:`match` block. It is automatically
@@ -1298,20 +1282,20 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
       .. note::
 
-         :const:`Py_TPFLAGS_MAPPING` and :const:`Py_TPFLAGS_SEQUENCE` are
+         :c:macro:`Py_TPFLAGS_MAPPING` and :c:macro:`Py_TPFLAGS_SEQUENCE` are
          mutually exclusive; it is an error to enable both flags simultaneously.
 
       **Inheritance:**
 
       This flag is inherited by types that do not already set
-      :const:`Py_TPFLAGS_SEQUENCE`.
+      :c:macro:`Py_TPFLAGS_SEQUENCE`.
 
       .. seealso:: :pep:`634` -- Structural Pattern Matching: Specification
 
       .. versionadded:: 3.10
 
 
-   .. data:: Py_TPFLAGS_SEQUENCE
+   .. c:macro:: Py_TPFLAGS_SEQUENCE
 
       This bit indicates that instances of the class may match sequence patterns
       when used as the subject of a :keyword:`match` block. It is automatically
@@ -1320,20 +1304,20 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
       .. note::
 
-         :const:`Py_TPFLAGS_MAPPING` and :const:`Py_TPFLAGS_SEQUENCE` are
+         :c:macro:`Py_TPFLAGS_MAPPING` and :c:macro:`Py_TPFLAGS_SEQUENCE` are
          mutually exclusive; it is an error to enable both flags simultaneously.
 
       **Inheritance:**
 
       This flag is inherited by types that do not already set
-      :const:`Py_TPFLAGS_MAPPING`.
+      :c:macro:`Py_TPFLAGS_MAPPING`.
 
       .. seealso:: :pep:`634` -- Structural Pattern Matching: Specification
 
       .. versionadded:: 3.10
 
 
-   .. data:: Py_TPFLAGS_VALID_VERSION_TAG
+   .. c:macro:: Py_TPFLAGS_VALID_VERSION_TAG
 
       Internal. Do not set or unset this flag.
       To indicate that a class has changed call :c:func:`PyType_Modified`
@@ -1357,7 +1341,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 .. c:member:: traverseproc PyTypeObject.tp_traverse
 
    An optional pointer to a traversal function for the garbage collector.  This is
-   only used if the :const:`Py_TPFLAGS_HAVE_GC` flag bit is set.  The signature is::
+   only used if the :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit is set.  The signature is::
 
       int tp_traverse(PyObject *self, visitproc visit, void *arg);
 
@@ -1367,8 +1351,8 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    The :c:member:`~PyTypeObject.tp_traverse` pointer is used by the garbage collector to detect
    reference cycles. A typical implementation of a :c:member:`~PyTypeObject.tp_traverse` function
    simply calls :c:func:`Py_VISIT` on each of the instance's members that are Python
-   objects that the instance owns. For example, this is function :c:func:`local_traverse` from the
-   :mod:`_thread` extension module::
+   objects that the instance owns. For example, this is function :c:func:`!local_traverse` from the
+   :mod:`!_thread` extension module::
 
       static int
       local_traverse(localobject *self, visitproc visit, void *arg)
@@ -1387,6 +1371,23 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    debugging aid you may want to visit it anyway just so the :mod:`gc` module's
    :func:`~gc.get_referents` function will include it.
 
+   Heap types (:c:macro:`Py_TPFLAGS_HEAPTYPE`) must visit their type with::
+
+       Py_VISIT(Py_TYPE(self));
+
+   It is only needed since Python 3.9. To support Python 3.8 and older, this
+   line must be conditionnal::
+
+       #if PY_VERSION_HEX >= 0x03090000
+           Py_VISIT(Py_TYPE(self));
+       #endif
+
+   If the :c:macro:`Py_TPFLAGS_MANAGED_DICT` bit is set in the
+   :c:member:`~PyTypeObject.tp_flags` field, the traverse function must call
+   :c:func:`PyObject_VisitManagedDict` like this::
+
+       PyObject_VisitManagedDict((PyObject*)self, visit, arg);
+
    .. warning::
        When implementing :c:member:`~PyTypeObject.tp_traverse`, only the
        members that the instance *owns* (by having :term:`strong references
@@ -1400,7 +1401,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
        are allowed to be removed even if the instance is still alive).
 
    Note that :c:func:`Py_VISIT` requires the *visit* and *arg* parameters to
-   :c:func:`local_traverse` to have these specific names; don't name them just
+   :c:func:`!local_traverse` to have these specific names; don't name them just
    anything.
 
    Instances of :ref:`heap-allocated types <heap-types>` hold a reference to
@@ -1419,10 +1420,10 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :const:`Py_TPFLAGS_HAVE_GC`, :attr:`tp_traverse`, :attr:`tp_clear`
+   Group: :c:macro:`Py_TPFLAGS_HAVE_GC`, :c:member:`~PyTypeObject.tp_traverse`, :c:member:`~PyTypeObject.tp_clear`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_clear` and the
-   :const:`Py_TPFLAGS_HAVE_GC` flag bit: the flag bit, :c:member:`~PyTypeObject.tp_traverse`, and
+   :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit: the flag bit, :c:member:`~PyTypeObject.tp_traverse`, and
    :c:member:`~PyTypeObject.tp_clear` are all inherited from the base type if they are all zero in
    the subtype.
 
@@ -1430,7 +1431,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 .. c:member:: inquiry PyTypeObject.tp_clear
 
    An optional pointer to a clear function for the garbage collector. This is only
-   used if the :const:`Py_TPFLAGS_HAVE_GC` flag bit is set.  The signature is::
+   used if the :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit is set.  The signature is::
 
       int tp_clear(PyObject *);
 
@@ -1459,9 +1460,10 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       }
 
    The :c:func:`Py_CLEAR` macro should be used, because clearing references is
-   delicate:  the reference to the contained object must not be decremented until
+   delicate:  the reference to the contained object must not be released
+   (via :c:func:`Py_DECREF`) until
    after the pointer to the contained object is set to ``NULL``.  This is because
-   decrementing the reference count may cause the contained object to become trash,
+   releasing the reference may cause the contained object to become trash,
    triggering a chain of reclamation activity that may include invoking arbitrary
    Python code (due to finalizers, or weakref callbacks, associated with the
    contained object). If it's possible for such code to reference *self* again,
@@ -1469,6 +1471,12 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    so that *self* knows the contained object can no longer be used.  The
    :c:func:`Py_CLEAR` macro performs the operations in a safe order.
 
+   If the :c:macro:`Py_TPFLAGS_MANAGED_DICT` bit is set in the
+   :c:member:`~PyTypeObject.tp_flags` field, the traverse function must call
+   :c:func:`PyObject_ClearManagedDict` like this::
+
+       PyObject_ClearManagedDict((PyObject*)self);
+
    Note that :c:member:`~PyTypeObject.tp_clear` is not *always* called
    before an instance is deallocated. For example, when reference counting
    is enough to determine that an object is no longer used, the cyclic garbage
@@ -1486,10 +1494,10 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :const:`Py_TPFLAGS_HAVE_GC`, :attr:`tp_traverse`, :attr:`tp_clear`
+   Group: :c:macro:`Py_TPFLAGS_HAVE_GC`, :c:member:`~PyTypeObject.tp_traverse`, :c:member:`~PyTypeObject.tp_clear`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_traverse` and the
-   :const:`Py_TPFLAGS_HAVE_GC` flag bit: the flag bit, :c:member:`~PyTypeObject.tp_traverse`, and
+   :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit: the flag bit, :c:member:`~PyTypeObject.tp_traverse`, and
    :c:member:`~PyTypeObject.tp_clear` are all inherited from the base type if they are all zero in
    the subtype.
 
@@ -1511,21 +1519,23 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    The following constants are defined to be used as the third argument for
    :c:member:`~PyTypeObject.tp_richcompare` and for :c:func:`PyObject_RichCompare`:
 
-   +----------------+------------+
-   | Constant       | Comparison |
-   +================+============+
-   | :const:`Py_LT` | ``<``      |
-   +----------------+------------+
-   | :const:`Py_LE` | ``<=``     |
-   +----------------+------------+
-   | :const:`Py_EQ` | ``==``     |
-   +----------------+------------+
-   | :const:`Py_NE` | ``!=``     |
-   +----------------+------------+
-   | :const:`Py_GT` | ``>``      |
-   +----------------+------------+
-   | :const:`Py_GE` | ``>=``     |
-   +----------------+------------+
+   .. c:namespace:: NULL
+
+   +--------------------+------------+
+   | Constant           | Comparison |
+   +====================+============+
+   | .. c:macro:: Py_LT | ``<``      |
+   +--------------------+------------+
+   | .. c:macro:: Py_LE | ``<=``     |
+   +--------------------+------------+
+   | .. c:macro:: Py_EQ | ``==``     |
+   +--------------------+------------+
+   | .. c:macro:: Py_NE | ``!=``     |
+   +--------------------+------------+
+   | .. c:macro:: Py_GT | ``>``      |
+   +--------------------+------------+
+   | .. c:macro:: Py_GE | ``>=``     |
+   +--------------------+------------+
 
    The following macro is defined to ease writing rich comparison functions:
 
@@ -1537,7 +1547,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
       they may be C ints or floats). The third argument specifies the requested
       operation, as for :c:func:`PyObject_RichCompare`.
 
-      The return value's reference count is properly incremented.
+      The returned value is a new :term:`strong reference`.
 
       On error, sets an exception and returns ``NULL`` from the function.
 
@@ -1545,7 +1555,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Inheritance:**
 
-   Group: :attr:`tp_hash`, :attr:`tp_richcompare`
+   Group: :c:member:`~PyTypeObject.tp_hash`, :c:member:`~PyTypeObject.tp_richcompare`
 
    This field is inherited by subtypes together with :c:member:`~PyTypeObject.tp_hash`:
    a subtype inherits :c:member:`~PyTypeObject.tp_richcompare` and :c:member:`~PyTypeObject.tp_hash` when
@@ -1554,16 +1564,16 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Default:**
 
-   :c:type:`PyBaseObject_Type` provides a :attr:`tp_richcompare`
+   :c:data:`PyBaseObject_Type` provides a :c:member:`~PyTypeObject.tp_richcompare`
    implementation, which may be inherited.  However, if only
-   :attr:`tp_hash` is defined, not even the inherited function is used
+   :c:member:`~PyTypeObject.tp_hash` is defined, not even the inherited function is used
    and instances of the type will not be able to participate in any
    comparisons.
 
 
 .. c:member:: Py_ssize_t PyTypeObject.tp_weaklistoffset
 
-   While this field is still supported, :const:`Py_TPFLAGS_MANAGED_WEAKREF`
+   While this field is still supported, :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF`
    should be used instead, if at all possible.
 
    If the instances of this type are weakly referenceable, this field is greater
@@ -1576,7 +1586,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    Do not confuse this field with :c:member:`~PyTypeObject.tp_weaklist`; that is the list head for
    weak references to the type object itself.
 
-   It is an error to set both the :const:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
+   It is an error to set both the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
    :c:member:`~PyTypeObject.tp_weaklist`.
 
    **Inheritance:**
@@ -1588,7 +1598,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    **Default:**
 
-   If the :const:`Py_TPFLAGS_MANAGED_WEAKREF` bit is set in the
+   If the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit is set in the
    :c:member:`~PyTypeObject.tp_dict` field, then
    :c:member:`~PyTypeObject.tp_weaklistoffset` will be set to a negative value,
    to indicate that it is unsafe to use this field.
@@ -1691,7 +1701,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
        to a pointer, are valid C99 address constants.
 
        However, the unary '&' operator applied to a non-static variable
-       like :c:func:`PyBaseObject_Type` is not required to produce an address
+       like :c:data:`PyBaseObject_Type` is not required to produce an address
        constant.  Compilers may support this (gcc does), MSVC does not.
        Both compilers are strictly standard conforming in this particular
        behavior.
@@ -1717,7 +1727,19 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    called; it may also be initialized to a dictionary containing initial attributes
    for the type.  Once :c:func:`PyType_Ready` has initialized the type, extra
    attributes for the type may be added to this dictionary only if they don't
-   correspond to overloaded operations (like :meth:`__add__`).
+   correspond to overloaded operations (like :meth:`~object.__add__`).  Once
+   initialization for the type has finished, this field should be
+   treated as read-only.
+
+   Some types may not store their dictionary in this slot.
+   Use :c:func:`PyType_GetDict` to retrieve the dictionary for an arbitrary
+   type.
+
+   .. versionchanged:: 3.12
+
+      Internals detail: For static builtin types, this is always ``NULL``.
+      Instead, the dict for such types is stored on ``PyInterpreterState``.
+      Use :c:func:`PyType_GetDict` to get the dict for an arbitrary type.
 
    **Inheritance:**
 
@@ -1770,7 +1792,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
 .. c:member:: Py_ssize_t PyTypeObject.tp_dictoffset
 
-   While this field is still supported, :const:`Py_TPFLAGS_MANAGED_DICT` should be
+   While this field is still supported, :c:macro:`Py_TPFLAGS_MANAGED_DICT` should be
    used instead, if at all possible.
 
    If the instances of this type have a dictionary containing instance variables,
@@ -1789,7 +1811,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    dictionary, so it is may be more efficient to call :c:func:`PyObject_GetAttr`
    when accessing an attribute on the object.
 
-   It is an error to set both the :const:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
+   It is an error to set both the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
    :c:member:`~PyTypeObject.tp_dictoffset`.
 
    **Inheritance:**
@@ -1797,15 +1819,15 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    This field is inherited by subtypes. A subtype should not override this offset;
    doing so could be unsafe, if C code tries to access the dictionary at the
    previous offset.
-   To properly support inheritance, use :const:`Py_TPFLAGS_MANAGED_DICT`.
+   To properly support inheritance, use :c:macro:`Py_TPFLAGS_MANAGED_DICT`.
 
    **Default:**
 
    This slot has no default.  For :ref:`static types <static-types>`, if the
-   field is ``NULL`` then no :attr:`__dict__` gets created for instances.
+   field is ``NULL`` then no :attr:`~object.__dict__` gets created for instances.
 
-   If the :const:`Py_TPFLAGS_MANAGED_DICT` bit is set in the
-   :c:member:`~PyTypeObject.tp_dict` field, then
+   If the :c:macro:`Py_TPFLAGS_MANAGED_DICT` bit is set in the
+   :c:member:`~PyTypeObject.tp_flags` field, then
    :c:member:`~PyTypeObject.tp_dictoffset` will be set to ``-1``, to indicate
    that it is unsafe to use this field.
 
@@ -1814,10 +1836,10 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    An optional pointer to an instance initialization function.
 
-   This function corresponds to the :meth:`__init__` method of classes.  Like
-   :meth:`__init__`, it is possible to create an instance without calling
-   :meth:`__init__`, and it is possible to reinitialize an instance by calling its
-   :meth:`__init__` method again.
+   This function corresponds to the :meth:`~object.__init__` method of classes.  Like
+   :meth:`!__init__`, it is possible to create an instance without calling
+   :meth:`!__init__`, and it is possible to reinitialize an instance by calling its
+   :meth:`!__init__` method again.
 
    The function signature is::
 
@@ -1825,7 +1847,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    The self argument is the instance to be initialized; the *args* and *kwds*
    arguments represent positional and keyword arguments of the call to
-   :meth:`__init__`.
+   :meth:`~object.__init__`.
 
    The :c:member:`~PyTypeObject.tp_init` function, if not ``NULL``, is called when an instance is
    created normally by calling its type, after the type's :c:member:`~PyTypeObject.tp_new` function
@@ -1864,7 +1886,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    :c:func:`PyType_GenericAlloc`, to force a standard heap
    allocation strategy.
 
-   For static subtypes, :c:type:`PyBaseObject_Type` uses
+   For static subtypes, :c:data:`PyBaseObject_Type` uses
    :c:func:`PyType_GenericAlloc`.  That is the recommended value
    for all statically defined types.
 
@@ -1891,7 +1913,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    in :c:member:`~PyTypeObject.tp_new`, while for mutable types, most initialization should be
    deferred to :c:member:`~PyTypeObject.tp_init`.
 
-   Set the :const:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag to disallow creating
+   Set the :c:macro:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag to disallow creating
    instances of the type in Python.
 
    **Inheritance:**
@@ -1925,9 +1947,9 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    In dynamic subtypes, this field is set to a deallocator suitable to
    match :c:func:`PyType_GenericAlloc` and the value of the
-   :const:`Py_TPFLAGS_HAVE_GC` flag bit.
+   :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit.
 
-   For static subtypes, :c:type:`PyBaseObject_Type` uses PyObject_Del.
+   For static subtypes, :c:data:`PyBaseObject_Type` uses :c:func:`PyObject_Del`.
 
 
 .. c:member:: inquiry PyTypeObject.tp_is_gc
@@ -1936,7 +1958,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
    The garbage collector needs to know whether a particular object is collectible
    or not.  Normally, it is sufficient to look at the object's type's
-   :c:member:`~PyTypeObject.tp_flags` field, and check the :const:`Py_TPFLAGS_HAVE_GC` flag bit.  But
+   :c:member:`~PyTypeObject.tp_flags` field, and check the :c:macro:`Py_TPFLAGS_HAVE_GC` flag bit.  But
    some types have a mixture of statically and dynamically allocated instances, and
    the statically allocated instances are not collectible.  Such types should
    define this function; it should return ``1`` for a collectible instance, and
@@ -1955,7 +1977,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    **Default:**
 
    This slot has no default.  If this field is ``NULL``,
-   :const:`Py_TPFLAGS_HAVE_GC` is used as the functional equivalent.
+   :c:macro:`Py_TPFLAGS_HAVE_GC` is used as the functional equivalent.
 
 
 .. c:member:: PyObject* PyTypeObject.tp_bases
@@ -2102,7 +2124,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    .. versionchanged:: 3.8
 
       Before version 3.8 it was necessary to set the
-      :const:`Py_TPFLAGS_HAVE_FINALIZE` flags bit in order for this field to be
+      :c:macro:`Py_TPFLAGS_HAVE_FINALIZE` flags bit in order for this field to be
       used.  This is no longer required.
 
    .. seealso:: "Safe object finalization" (:pep:`442`)
@@ -2114,7 +2136,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    In other words, it is used to implement
    :ref:`vectorcall <vectorcall>` for ``type.__call__``.
    If ``tp_vectorcall`` is ``NULL``, the default call implementation
-   using :attr:`__new__` and :attr:`__init__` is used.
+   using :meth:`~object.__new__` and :meth:`~object.__init__` is used.
 
    **Inheritance:**
 
@@ -2123,7 +2145,7 @@ and :c:type:`PyType_Type` effectively act as defaults.)
    .. versionadded:: 3.9 (the field exists since 3.8 but it's only used since 3.9)
 
 
-.. c:member:: char PyTypeObject.tp_watched
+.. c:member:: unsigned char PyTypeObject.tp_watched
 
    Internal. Do not use.
 
@@ -2150,7 +2172,7 @@ This results in types that are limited relative to types defined in Python:
   include any subinterpreter-specific state.
 
 Also, since :c:type:`PyTypeObject` is only part of the :ref:`Limited API
-<stable>` as an opaque struct, any extension modules using static types must be
+<limited-c-api>` as an opaque struct, any extension modules using static types must be
 compiled for a specific Python minor version.
 
 
@@ -2161,7 +2183,7 @@ Heap Types
 
 An alternative to :ref:`static types <static-types>` is *heap-allocated types*,
 or *heap types* for short, which correspond closely to classes created by
-Python's ``class`` statement. Heap types have the :const:`Py_TPFLAGS_HEAPTYPE`
+Python's ``class`` statement. Heap types have the :c:macro:`Py_TPFLAGS_HEAPTYPE`
 flag set.
 
 This is done by filling a :c:type:`PyType_Spec` structure and calling
@@ -2241,8 +2263,8 @@ Number Object Structures
 
    .. note::
 
-      The :c:data:`nb_reserved` field should always be ``NULL``.  It
-      was previously called :c:data:`nb_long`, and was renamed in
+      The :c:member:`~PyNumberMethods.nb_reserved` field should always be ``NULL``.  It
+      was previously called :c:member:`!nb_long`, and was renamed in
       Python 3.0.1.
 
 .. c:member:: binaryfunc PyNumberMethods.nb_add
@@ -2313,8 +2335,8 @@ Mapping Object Structures
 .. c:member:: objobjargproc PyMappingMethods.mp_ass_subscript
 
    This function is used by :c:func:`PyObject_SetItem`,
-   :c:func:`PyObject_DelItem`, :c:func:`PyObject_SetSlice` and
-   :c:func:`PyObject_DelSlice`.  It has the same signature as
+   :c:func:`PyObject_DelItem`, :c:func:`PySequence_SetSlice` and
+   :c:func:`PySequence_DelSlice`.  It has the same signature as
    :c:func:`!PyObject_SetItem`, but *v* can also be set to ``NULL`` to delete
    an item.  If this slot is ``NULL``, the object does not support item
    assignment and deletion.
@@ -2360,9 +2382,9 @@ Sequence Object Structures
    This slot must be filled for the :c:func:`PySequence_Check`
    function to return ``1``, it can be ``NULL`` otherwise.
 
-   Negative indexes are handled as follows: if the :attr:`sq_length` slot is
+   Negative indexes are handled as follows: if the :c:member:`~PySequenceMethods.sq_length` slot is
    filled, it is called and the sequence length is used to compute a positive
-   index which is passed to :attr:`sq_item`.  If :attr:`sq_length` is ``NULL``,
+   index which is passed to  :c:member:`~PySequenceMethods.sq_item`.  If :c:member:`!sq_length` is ``NULL``,
    the index is passed as is to the function.
 
 .. c:member:: ssizeobjargproc PySequenceMethods.sq_ass_item
@@ -2425,7 +2447,7 @@ Buffer Object Structures
    Except for point (3), an implementation of this function MUST take these
    steps:
 
-   (1) Check if the request can be met. If not, raise :c:data:`PyExc_BufferError`,
+   (1) Check if the request can be met. If not, raise :exc:`BufferError`,
        set :c:expr:`view->obj` to ``NULL`` and return ``-1``.
 
    (2) Fill in the requested fields.
@@ -2536,7 +2558,7 @@ Async Object Structures
       PyObject *am_aiter(PyObject *self);
 
    Must return an :term:`asynchronous iterator` object.
-   See :meth:`__anext__` for details.
+   See :meth:`~object.__anext__` for details.
 
    This slot may be set to ``NULL`` if an object does not implement
    asynchronous iteration protocol.
@@ -2547,7 +2569,8 @@ Async Object Structures
 
       PyObject *am_anext(PyObject *self);
 
-   Must return an :term:`awaitable` object.  See :meth:`__anext__` for details.
+   Must return an :term:`awaitable` object.
+   See :meth:`~object.__anext__` for details.
    This slot may be set to ``NULL``.
 
 .. c:member:: sendfunc PyAsyncMethods.am_send
@@ -2572,8 +2595,8 @@ Slot Type typedefs
    The purpose of this function is to separate memory allocation from memory
    initialization.  It should return a pointer to a block of memory of adequate
    length for the instance, suitably aligned, and initialized to zeros, but with
-   :attr:`ob_refcnt` set to ``1`` and :attr:`ob_type` set to the type argument.  If
-   the type's :c:member:`~PyTypeObject.tp_itemsize` is non-zero, the object's :attr:`ob_size` field
+   :c:member:`~PyObject.ob_refcnt` set to ``1`` and :c:member:`~PyObject.ob_type` set to the type argument.  If
+   the type's :c:member:`~PyTypeObject.tp_itemsize` is non-zero, the object's :c:member:`~PyVarObject.ob_size` field
    should be initialized to *nitems* and the length of the allocated memory block
    should be ``tp_basicsize + nitems*tp_itemsize``, rounded up to a multiple of
    ``sizeof(void*)``; otherwise, *nitems* is not used and the length of the block
@@ -2769,7 +2792,7 @@ A type that supports weakrefs, instance dicts, and hashing::
 
 A str subclass that cannot be subclassed and cannot be called
 to create instances (e.g. uses a separate factory func) using
-:c:data:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag::
+:c:macro:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag::
 
    typedef struct {
        PyUnicodeObject raw;
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index ab3a2e274d9395..5541eaa521803b 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -44,7 +44,7 @@ Python:
 
 .. c:type:: Py_UNICODE
 
-   This is a typedef of :c:expr:`wchar_t`, which is a 16-bit type or 32-bit type
+   This is a typedef of :c:type:`wchar_t`, which is a 16-bit type or 32-bit type
    depending on the platform.
 
    .. versionchanged:: 3.3
@@ -52,6 +52,8 @@ Python:
       whether you selected a "narrow" or "wide" Unicode version of Python at
       build time.
 
+   .. deprecated-removed:: 3.13 3.15
+
 
 .. c:type:: PyASCIIObject
             PyCompactUnicodeObject
@@ -73,19 +75,19 @@ Python:
 The following APIs are C macros and static inlined functions for fast checks and
 access to internal read-only data of Unicode objects:
 
-.. c:function:: int PyUnicode_Check(PyObject *o)
+.. c:function:: int PyUnicode_Check(PyObject *obj)
 
-   Return true if the object *o* is a Unicode object or an instance of a Unicode
+   Return true if the object *obj* is a Unicode object or an instance of a Unicode
    subtype.  This function always succeeds.
 
 
-.. c:function:: int PyUnicode_CheckExact(PyObject *o)
+.. c:function:: int PyUnicode_CheckExact(PyObject *obj)
 
-   Return true if the object *o* is a Unicode object, but not an instance of a
+   Return true if the object *obj* is a Unicode object, but not an instance of a
    subtype.  This function always succeeds.
 
 
-.. c:function:: int PyUnicode_READY(PyObject *o)
+.. c:function:: int PyUnicode_READY(PyObject *unicode)
 
    Returns ``0``. This API is kept only for backward compatibility.
 
@@ -95,17 +97,17 @@ access to internal read-only data of Unicode objects:
       This API does nothing since Python 3.12.
 
 
-.. c:function:: Py_ssize_t PyUnicode_GET_LENGTH(PyObject *o)
+.. c:function:: Py_ssize_t PyUnicode_GET_LENGTH(PyObject *unicode)
 
-   Return the length of the Unicode string, in code points.  *o* has to be a
+   Return the length of the Unicode string, in code points.  *unicode* has to be a
    Unicode object in the "canonical" representation (not checked).
 
    .. versionadded:: 3.3
 
 
-.. c:function:: Py_UCS1* PyUnicode_1BYTE_DATA(PyObject *o)
-                Py_UCS2* PyUnicode_2BYTE_DATA(PyObject *o)
-                Py_UCS4* PyUnicode_4BYTE_DATA(PyObject *o)
+.. c:function:: Py_UCS1* PyUnicode_1BYTE_DATA(PyObject *unicode)
+                Py_UCS2* PyUnicode_2BYTE_DATA(PyObject *unicode)
+                Py_UCS4* PyUnicode_4BYTE_DATA(PyObject *unicode)
 
    Return a pointer to the canonical representation cast to UCS1, UCS2 or UCS4
    integer types for direct character access.  No checks are performed if the
@@ -127,18 +129,18 @@ access to internal read-only data of Unicode objects:
       ``PyUnicode_WCHAR_KIND`` has been removed.
 
 
-.. c:function:: int PyUnicode_KIND(PyObject *o)
+.. c:function:: int PyUnicode_KIND(PyObject *unicode)
 
    Return one of the PyUnicode kind constants (see above) that indicate how many
-   bytes per character this Unicode object uses to store its data.  *o* has to
+   bytes per character this Unicode object uses to store its data.  *unicode* has to
    be a Unicode object in the "canonical" representation (not checked).
 
    .. versionadded:: 3.3
 
 
-.. c:function:: void* PyUnicode_DATA(PyObject *o)
+.. c:function:: void* PyUnicode_DATA(PyObject *unicode)
 
-   Return a void pointer to the raw Unicode buffer.  *o* has to be a Unicode
+   Return a void pointer to the raw Unicode buffer.  *unicode* has to be a Unicode
    object in the "canonical" representation (not checked).
 
    .. versionadded:: 3.3
@@ -166,25 +168,25 @@ access to internal read-only data of Unicode objects:
    .. versionadded:: 3.3
 
 
-.. c:function:: Py_UCS4 PyUnicode_READ_CHAR(PyObject *o, Py_ssize_t index)
+.. c:function:: Py_UCS4 PyUnicode_READ_CHAR(PyObject *unicode, Py_ssize_t index)
 
-   Read a character from a Unicode object *o*, which must be in the "canonical"
+   Read a character from a Unicode object *unicode*, which must be in the "canonical"
    representation.  This is less efficient than :c:func:`PyUnicode_READ` if you
    do multiple consecutive reads.
 
    .. versionadded:: 3.3
 
 
-.. c:function:: Py_UCS4 PyUnicode_MAX_CHAR_VALUE(PyObject *o)
+.. c:function:: Py_UCS4 PyUnicode_MAX_CHAR_VALUE(PyObject *unicode)
 
    Return the maximum code point that is suitable for creating another string
-   based on *o*, which must be in the "canonical" representation.  This is
+   based on *unicode*, which must be in the "canonical" representation.  This is
    always an approximation but more efficient than iterating over the string.
 
    .. versionadded:: 3.3
 
 
-.. c:function:: int PyUnicode_IsIdentifier(PyObject *o)
+.. c:function:: int PyUnicode_IsIdentifier(PyObject *unicode)
 
    Return ``1`` if the string is a valid identifier according to the language
    definition, section :ref:`identifiers`. Return ``0`` otherwise.
@@ -270,25 +272,16 @@ These APIs can be used for fast direct character conversions:
 
    Return the character *ch* converted to lower case.
 
-   .. deprecated:: 3.3
-      This function uses simple case mappings.
-
 
 .. c:function:: Py_UCS4 Py_UNICODE_TOUPPER(Py_UCS4 ch)
 
    Return the character *ch* converted to upper case.
 
-   .. deprecated:: 3.3
-      This function uses simple case mappings.
-
 
 .. c:function:: Py_UCS4 Py_UNICODE_TOTITLE(Py_UCS4 ch)
 
    Return the character *ch* converted to title case.
 
-   .. deprecated:: 3.3
-      This function uses simple case mappings.
-
 
 .. c:function:: int Py_UNICODE_TODECIMAL(Py_UCS4 ch)
 
@@ -365,9 +358,9 @@ APIs:
    .. versionadded:: 3.3
 
 
-.. c:function:: PyObject* PyUnicode_FromStringAndSize(const char *u, Py_ssize_t size)
+.. c:function:: PyObject* PyUnicode_FromStringAndSize(const char *str, Py_ssize_t size)
 
-   Create a Unicode object from the char buffer *u*.  The bytes will be
+   Create a Unicode object from the char buffer *str*.  The bytes will be
    interpreted as being UTF-8 encoded.  The buffer is copied into the new
    object.
    The return value might be a shared object, i.e. modification of the data is
@@ -376,16 +369,16 @@ APIs:
    This function raises :exc:`SystemError` when:
 
    * *size* < 0,
-   * *u* is ``NULL`` and *size* > 0
+   * *str* is ``NULL`` and *size* > 0
 
    .. versionchanged:: 3.12
-      *u* == ``NULL`` with *size* > 0 is not allowed anymore.
+      *str* == ``NULL`` with *size* > 0 is not allowed anymore.
 
 
-.. c:function:: PyObject *PyUnicode_FromString(const char *u)
+.. c:function:: PyObject *PyUnicode_FromString(const char *str)
 
    Create a Unicode object from a UTF-8 encoded null-terminated char buffer
-   *u*.
+   *str*.
 
 
 .. c:function:: PyObject* PyUnicode_FromFormat(const char *format, ...)
@@ -394,98 +387,149 @@ APIs:
    arguments, calculate the size of the resulting Python Unicode string and return
    a string with the values formatted into it.  The variable arguments must be C
    types and must correspond exactly to the format characters in the *format*
-   ASCII-encoded string. The following format characters are allowed:
-
-   .. % This should be exactly the same as the table in PyErr_Format.
-
-   .. tabularcolumns:: |l|l|L|
-
-   +-------------------+---------------------+----------------------------------+
-   | Format Characters | Type                | Comment                          |
-   +===================+=====================+==================================+
-   | :attr:`%%`        | *n/a*               | The literal % character.         |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%c`        | int                 | A single character,              |
-   |                   |                     | represented as a C int.          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%d`        | int                 | Equivalent to                    |
-   |                   |                     | ``printf("%d")``. [1]_           |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%u`        | unsigned int        | Equivalent to                    |
-   |                   |                     | ``printf("%u")``. [1]_           |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%ld`       | long                | Equivalent to                    |
-   |                   |                     | ``printf("%ld")``. [1]_          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%li`       | long                | Equivalent to                    |
-   |                   |                     | ``printf("%li")``. [1]_          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%lu`       | unsigned long       | Equivalent to                    |
-   |                   |                     | ``printf("%lu")``. [1]_          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%lld`      | long long           | Equivalent to                    |
-   |                   |                     | ``printf("%lld")``. [1]_         |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%lli`      | long long           | Equivalent to                    |
-   |                   |                     | ``printf("%lli")``. [1]_         |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%llu`      | unsigned long long  | Equivalent to                    |
-   |                   |                     | ``printf("%llu")``. [1]_         |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%zd`       | :c:type:`\          | Equivalent to                    |
-   |                   | Py_ssize_t`         | ``printf("%zd")``. [1]_          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%zi`       | :c:type:`\          | Equivalent to                    |
-   |                   | Py_ssize_t`         | ``printf("%zi")``. [1]_          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%zu`       | size_t              | Equivalent to                    |
-   |                   |                     | ``printf("%zu")``. [1]_          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%i`        | int                 | Equivalent to                    |
-   |                   |                     | ``printf("%i")``. [1]_           |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%x`        | int                 | Equivalent to                    |
-   |                   |                     | ``printf("%x")``. [1]_           |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%s`        | const char\*        | A null-terminated C character    |
-   |                   |                     | array.                           |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%p`        | const void\*        | The hex representation of a C    |
-   |                   |                     | pointer. Mostly equivalent to    |
-   |                   |                     | ``printf("%p")`` except that     |
-   |                   |                     | it is guaranteed to start with   |
-   |                   |                     | the literal ``0x`` regardless    |
-   |                   |                     | of what the platform's           |
-   |                   |                     | ``printf`` yields.               |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%A`        | PyObject\*          | The result of calling            |
-   |                   |                     | :func:`ascii`.                   |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%U`        | PyObject\*          | A Unicode object.                |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%V`        | PyObject\*,         | A Unicode object (which may be   |
-   |                   | const char\*        | ``NULL``) and a null-terminated  |
-   |                   |                     | C character array as a second    |
-   |                   |                     | parameter (which will be used,   |
-   |                   |                     | if the first parameter is        |
-   |                   |                     | ``NULL``).                       |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%S`        | PyObject\*          | The result of calling            |
-   |                   |                     | :c:func:`PyObject_Str`.          |
-   +-------------------+---------------------+----------------------------------+
-   | :attr:`%R`        | PyObject\*          | The result of calling            |
-   |                   |                     | :c:func:`PyObject_Repr`.         |
-   +-------------------+---------------------+----------------------------------+
+   ASCII-encoded string.
+
+   A conversion specifier contains two or more characters and has the following
+   components, which must occur in this order:
+
+   #. The ``'%'`` character, which marks the start of the specifier.
+
+   #. Conversion flags (optional), which affect the result of some conversion
+      types.
+
+   #. Minimum field width (optional).
+      If specified as an ``'*'`` (asterisk), the actual width is given in the
+      next argument, which must be of type :c:expr:`int`, and the object to
+      convert comes after the minimum field width and optional precision.
+
+   #. Precision (optional), given as a ``'.'`` (dot) followed by the precision.
+      If specified as ``'*'`` (an asterisk), the actual precision is given in
+      the next argument, which must be of type :c:expr:`int`, and the value to
+      convert comes after the precision.
+
+   #. Length modifier (optional).
+
+   #. Conversion type.
+
+   The conversion flag characters are:
+
+   .. tabularcolumns:: |l|L|
+
+   +-------+-------------------------------------------------------------+
+   | Flag  | Meaning                                                     |
+   +=======+=============================================================+
+   | ``0`` | The conversion will be zero padded for numeric values.      |
+   +-------+-------------------------------------------------------------+
+   | ``-`` | The converted value is left adjusted (overrides the ``0``   |
+   |       | flag if both are given).                                    |
+   +-------+-------------------------------------------------------------+
+
+   The length modifiers for following integer conversions (``d``, ``i``,
+   ``o``, ``u``, ``x``, or ``X``) specify the type of the argument
+   (:c:expr:`int` by default):
+
+   .. tabularcolumns:: |l|L|
+
+   +----------+-----------------------------------------------------+
+   | Modifier | Types                                               |
+   +==========+=====================================================+
+   | ``l``    | :c:expr:`long` or :c:expr:`unsigned long`           |
+   +----------+-----------------------------------------------------+
+   | ``ll``   | :c:expr:`long long` or :c:expr:`unsigned long long` |
+   +----------+-----------------------------------------------------+
+   | ``j``    | :c:type:`intmax_t` or :c:type:`uintmax_t`           |
+   +----------+-----------------------------------------------------+
+   | ``z``    | :c:type:`size_t` or :c:type:`ssize_t`               |
+   +----------+-----------------------------------------------------+
+   | ``t``    | :c:type:`ptrdiff_t`                                 |
+   +----------+-----------------------------------------------------+
+
+   The length modifier ``l`` for following conversions ``s`` or ``V`` specify
+   that the type of the argument is :c:expr:`const wchar_t*`.
+
+   The conversion specifiers are:
+
+   .. list-table::
+      :widths: auto
+      :header-rows: 1
+
+      * - Conversion Specifier
+        - Type
+        - Comment
+
+      * - ``%``
+        - *n/a*
+        - The literal ``%`` character.
+
+      * - ``d``, ``i``
+        - Specified by the length modifier
+        - The decimal representation of a signed C integer.
+
+      * - ``u``
+        - Specified by the length modifier
+        - The decimal representation of an unsigned C integer.
+
+      * - ``o``
+        - Specified by the length modifier
+        - The octal representation of an unsigned C integer.
+
+      * - ``x``
+        - Specified by the length modifier
+        - The hexadecimal representation of an unsigned C integer (lowercase).
+
+      * - ``X``
+        - Specified by the length modifier
+        - The hexadecimal representation of an unsigned C integer (uppercase).
+
+      * - ``c``
+        - :c:expr:`int`
+        - A single character.
+
+      * - ``s``
+        - :c:expr:`const char*` or :c:expr:`const wchar_t*`
+        - A null-terminated C character array.
+
+      * - ``p``
+        - :c:expr:`const void*`
+        - The hex representation of a C  pointer.
+          Mostly equivalent to ``printf("%p")`` except that it is guaranteed to
+          start with the literal ``0x`` regardless of what the platform's
+          ``printf`` yields.
+
+      * - ``A``
+        - :c:expr:`PyObject*`
+        - The result of calling :func:`ascii`.
+
+      * - ``U``
+        - :c:expr:`PyObject*`
+        - A Unicode object.
+
+      * - ``V``
+        - :c:expr:`PyObject*`, :c:expr:`const char*` or :c:expr:`const wchar_t*`
+        - A Unicode object (which may be ``NULL``) and a null-terminated
+          C character array as a second parameter (which will be used,
+          if the first parameter is ``NULL``).
+
+      * - ``S``
+        - :c:expr:`PyObject*`
+        - The result of calling :c:func:`PyObject_Str`.
+
+      * - ``R``
+        - :c:expr:`PyObject*`
+        - The result of calling :c:func:`PyObject_Repr`.
 
    .. note::
       The width formatter unit is number of characters rather than bytes.
-      The precision formatter unit is number of bytes for ``"%s"`` and
+      The precision formatter unit is number of bytes or :c:type:`wchar_t`
+      items (if the length modifier ``l`` is used) for ``"%s"`` and
       ``"%V"`` (if the ``PyObject*`` argument is ``NULL``), and a number of
       characters for ``"%A"``, ``"%U"``, ``"%S"``, ``"%R"`` and ``"%V"``
       (if the ``PyObject*`` argument is not ``NULL``).
 
-   .. [1] For integer specifiers (d, u, ld, li, lu, lld, lli, llu, zd, zi,
-      zu, i, x): the 0-conversion flag has effect even when a precision is given.
+   .. note::
+      Unlike to C :c:func:`printf` the ``0`` flag has effect even when
+      a precision is given for integer conversions (``d``, ``i``, ``u``, ``o``,
+      ``x``, or ``X``).
 
    .. versionchanged:: 3.2
       Support for ``"%lld"`` and ``"%llu"`` added.
@@ -498,6 +542,13 @@ APIs:
       ``"%V"``, ``"%S"``, ``"%R"`` added.
 
    .. versionchanged:: 3.12
+      Support for conversion specifiers ``o`` and ``X``.
+      Support for length modifiers ``j`` and ``t``.
+      Length modifiers are now applied to all integer conversions.
+      Length modifier ``l`` is now applied to conversion specifiers ``s`` and ``V``.
+      Support for variable width and precision ``*``.
+      Support for flag ``-``.
+
       An unrecognized format character now sets a :exc:`SystemError`.
       In previous versions it caused all the rest of the format string to be
       copied as-is to the result string, and any extra arguments discarded.
@@ -513,7 +564,7 @@ APIs:
 
    Copy an instance of a Unicode subtype to a new true Unicode object if
    necessary. If *obj* is already a true Unicode object (not a subtype),
-   return the reference with incremented refcount.
+   return a new :term:`strong reference` to the object.
 
    Objects other than Unicode or its subtypes will cause a :exc:`TypeError`.
 
@@ -550,7 +601,7 @@ APIs:
                                                     Py_ssize_t how_many)
 
    Copy characters from one Unicode object into another.  This function performs
-   character conversion when necessary and falls back to :c:func:`memcpy` if
+   character conversion when necessary and falls back to :c:func:`!memcpy` if
    possible.  Returns ``-1`` and sets an exception on error, otherwise returns
    the number of copied characters.
 
@@ -595,29 +646,29 @@ APIs:
    .. versionadded:: 3.3
 
 
-.. c:function:: PyObject* PyUnicode_Substring(PyObject *str, Py_ssize_t start, \
+.. c:function:: PyObject* PyUnicode_Substring(PyObject *unicode, Py_ssize_t start, \
                                               Py_ssize_t end)
 
-   Return a substring of *str*, from character index *start* (included) to
+   Return a substring of *unicode*, from character index *start* (included) to
    character index *end* (excluded).  Negative indices are not supported.
 
    .. versionadded:: 3.3
 
 
-.. c:function:: Py_UCS4* PyUnicode_AsUCS4(PyObject *u, Py_UCS4 *buffer, \
+.. c:function:: Py_UCS4* PyUnicode_AsUCS4(PyObject *unicode, Py_UCS4 *buffer, \
                                           Py_ssize_t buflen, int copy_null)
 
-   Copy the string *u* into a UCS4 buffer, including a null character, if
+   Copy the string *unicode* into a UCS4 buffer, including a null character, if
    *copy_null* is set.  Returns ``NULL`` and sets an exception on error (in
    particular, a :exc:`SystemError` if *buflen* is smaller than the length of
-   *u*).  *buffer* is returned on success.
+   *unicode*).  *buffer* is returned on success.
 
    .. versionadded:: 3.3
 
 
-.. c:function:: Py_UCS4* PyUnicode_AsUCS4Copy(PyObject *u)
+.. c:function:: Py_UCS4* PyUnicode_AsUCS4Copy(PyObject *unicode)
 
-   Copy the string *u* into a new UCS4 buffer that is allocated using
+   Copy the string *unicode* into a new UCS4 buffer that is allocated using
    :c:func:`PyMem_Malloc`.  If this fails, ``NULL`` is returned with a
    :exc:`MemoryError` set.  The returned buffer always has an extra
    null code point appended.
@@ -632,7 +683,7 @@ The current locale encoding can be used to decode text from the operating
 system.
 
 .. c:function:: PyObject* PyUnicode_DecodeLocaleAndSize(const char *str, \
-                                                        Py_ssize_t len, \
+                                                        Py_ssize_t length, \
                                                         const char *errors)
 
    Decode a string from UTF-8 on Android and VxWorks, or from the current
@@ -663,7 +714,7 @@ system.
 .. c:function:: PyObject* PyUnicode_DecodeLocale(const char *str, const char *errors)
 
    Similar to :c:func:`PyUnicode_DecodeLocaleAndSize`, but compute the string
-   length using :c:func:`strlen`.
+   length using :c:func:`!strlen`.
 
    .. versionadded:: 3.3
 
@@ -737,7 +788,7 @@ conversion function:
       Accepts a :term:`path-like object`.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeFSDefaultAndSize(const char *s, Py_ssize_t size)
+.. c:function:: PyObject* PyUnicode_DecodeFSDefaultAndSize(const char *str, Py_ssize_t size)
 
    Decode a string from the :term:`filesystem encoding and error handler`.
 
@@ -753,7 +804,7 @@ conversion function:
       handler>` is now used.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeFSDefault(const char *s)
+.. c:function:: PyObject* PyUnicode_DecodeFSDefault(const char *str)
 
    Decode a null-terminated string from the :term:`filesystem encoding and
    error handler`.
@@ -788,21 +839,21 @@ conversion function:
 wchar_t Support
 """""""""""""""
 
-:c:expr:`wchar_t` support for platforms which support it:
+:c:type:`wchar_t` support for platforms which support it:
 
-.. c:function:: PyObject* PyUnicode_FromWideChar(const wchar_t *w, Py_ssize_t size)
+.. c:function:: PyObject* PyUnicode_FromWideChar(const wchar_t *wstr, Py_ssize_t size)
 
-   Create a Unicode object from the :c:expr:`wchar_t` buffer *w* of the given *size*.
+   Create a Unicode object from the :c:type:`wchar_t` buffer *wstr* of the given *size*.
    Passing ``-1`` as the *size* indicates that the function must itself compute the length,
-   using wcslen.
+   using :c:func:`!wcslen`.
    Return ``NULL`` on failure.
 
 
-.. c:function:: Py_ssize_t PyUnicode_AsWideChar(PyObject *unicode, wchar_t *w, Py_ssize_t size)
+.. c:function:: Py_ssize_t PyUnicode_AsWideChar(PyObject *unicode, wchar_t *wstr, Py_ssize_t size)
 
-   Copy the Unicode object contents into the :c:expr:`wchar_t` buffer *w*.  At most
-   *size* :c:expr:`wchar_t` characters are copied (excluding a possibly trailing
-   null termination character).  Return the number of :c:expr:`wchar_t` characters
+   Copy the Unicode object contents into the :c:type:`wchar_t` buffer *wstr*.  At most
+   *size* :c:type:`wchar_t` characters are copied (excluding a possibly trailing
+   null termination character).  Return the number of :c:type:`wchar_t` characters
    copied or ``-1`` in case of an error.  Note that the resulting :c:expr:`wchar_t*`
    string may or may not be null-terminated.  It is the responsibility of the caller
    to make sure that the :c:expr:`wchar_t*` string is null-terminated in case this is
@@ -816,12 +867,12 @@ wchar_t Support
    Convert the Unicode object to a wide character string. The output string
    always ends with a null character. If *size* is not ``NULL``, write the number
    of wide characters (excluding the trailing null termination character) into
-   *\*size*. Note that the resulting :c:expr:`wchar_t` string might contain
+   *\*size*. Note that the resulting :c:type:`wchar_t` string might contain
    null characters, which would cause the string to be truncated when used with
    most C functions. If *size* is ``NULL`` and the :c:expr:`wchar_t*` string
    contains null characters a :exc:`ValueError` is raised.
 
-   Returns a buffer allocated by :c:func:`PyMem_New` (use
+   Returns a buffer allocated by :c:macro:`PyMem_New` (use
    :c:func:`PyMem_Free` to free it) on success. On error, returns ``NULL``
    and *\*size* is undefined. Raises a :exc:`MemoryError` if memory allocation
    is failed.
@@ -864,10 +915,10 @@ Generic Codecs
 These are the generic codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_Decode(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_Decode(const char *str, Py_ssize_t size, \
                               const char *encoding, const char *errors)
 
-   Create a Unicode object by decoding *size* bytes of the encoded string *s*.
+   Create a Unicode object by decoding *size* bytes of the encoded string *str*.
    *encoding* and *errors* have the same meaning as the parameters of the same name
    in the :func:`str` built-in function.  The codec to be used is looked up
    using the Python codec registry.  Return ``NULL`` if an exception was raised by
@@ -890,13 +941,13 @@ UTF-8 Codecs
 These are the UTF-8 codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF8(const char *s, Py_ssize_t size, const char *errors)
+.. c:function:: PyObject* PyUnicode_DecodeUTF8(const char *str, Py_ssize_t size, const char *errors)
 
    Create a Unicode object by decoding *size* bytes of the UTF-8 encoded string
-   *s*. Return ``NULL`` if an exception was raised by the codec.
+   *str*. Return ``NULL`` if an exception was raised by the codec.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF8Stateful(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeUTF8Stateful(const char *str, Py_ssize_t size, \
                               const char *errors, Py_ssize_t *consumed)
 
    If *consumed* is ``NULL``, behave like :c:func:`PyUnicode_DecodeUTF8`. If
@@ -920,8 +971,8 @@ These are the UTF-8 codec APIs:
    returned buffer always has an extra null byte appended (not included in
    *size*), regardless of whether there are any other null code points.
 
-   In the case of an error, ``NULL`` is returned with an exception set and no
-   *size* is stored.
+   On error, set an exception, set *size* to ``-1`` (if it's not NULL) and
+   return ``NULL``.
 
    This caches the UTF-8 representation of the string in the Unicode object, and
    subsequent calls will return a pointer to the same buffer.  The caller is not
@@ -934,7 +985,7 @@ These are the UTF-8 codec APIs:
       The return type is now ``const char *`` rather of ``char *``.
 
    .. versionchanged:: 3.10
-      This function is a part of the :ref:`limited API <stable>`.
+      This function is a part of the :ref:`limited API <limited-c-api>`.
 
 
 .. c:function:: const char* PyUnicode_AsUTF8(PyObject *unicode)
@@ -953,7 +1004,7 @@ UTF-32 Codecs
 These are the UTF-32 codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF32(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeUTF32(const char *str, Py_ssize_t size, \
                               const char *errors, int *byteorder)
 
    Decode *size* bytes from a UTF-32 encoded buffer string and return the
@@ -980,7 +1031,7 @@ These are the UTF-32 codec APIs:
    Return ``NULL`` if an exception was raised by the codec.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF32Stateful(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeUTF32Stateful(const char *str, Py_ssize_t size, \
                               const char *errors, int *byteorder, Py_ssize_t *consumed)
 
    If *consumed* is ``NULL``, behave like :c:func:`PyUnicode_DecodeUTF32`. If
@@ -1003,7 +1054,7 @@ UTF-16 Codecs
 These are the UTF-16 codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF16(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeUTF16(const char *str, Py_ssize_t size, \
                               const char *errors, int *byteorder)
 
    Decode *size* bytes from a UTF-16 encoded buffer string and return the
@@ -1031,7 +1082,7 @@ These are the UTF-16 codec APIs:
    Return ``NULL`` if an exception was raised by the codec.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF16Stateful(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeUTF16Stateful(const char *str, Py_ssize_t size, \
                               const char *errors, int *byteorder, Py_ssize_t *consumed)
 
    If *consumed* is ``NULL``, behave like :c:func:`PyUnicode_DecodeUTF16`. If
@@ -1054,13 +1105,13 @@ UTF-7 Codecs
 These are the UTF-7 codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF7(const char *s, Py_ssize_t size, const char *errors)
+.. c:function:: PyObject* PyUnicode_DecodeUTF7(const char *str, Py_ssize_t size, const char *errors)
 
    Create a Unicode object by decoding *size* bytes of the UTF-7 encoded string
-   *s*.  Return ``NULL`` if an exception was raised by the codec.
+   *str*.  Return ``NULL`` if an exception was raised by the codec.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUTF7Stateful(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeUTF7Stateful(const char *str, Py_ssize_t size, \
                               const char *errors, Py_ssize_t *consumed)
 
    If *consumed* is ``NULL``, behave like :c:func:`PyUnicode_DecodeUTF7`.  If
@@ -1075,11 +1126,11 @@ Unicode-Escape Codecs
 These are the "Unicode Escape" codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_DecodeUnicodeEscape(const char *s, \
+.. c:function:: PyObject* PyUnicode_DecodeUnicodeEscape(const char *str, \
                               Py_ssize_t size, const char *errors)
 
    Create a Unicode object by decoding *size* bytes of the Unicode-Escape encoded
-   string *s*.  Return ``NULL`` if an exception was raised by the codec.
+   string *str*.  Return ``NULL`` if an exception was raised by the codec.
 
 
 .. c:function:: PyObject* PyUnicode_AsUnicodeEscapeString(PyObject *unicode)
@@ -1095,11 +1146,11 @@ Raw-Unicode-Escape Codecs
 These are the "Raw Unicode Escape" codec APIs:
 
 
-.. c:function:: PyObject* PyUnicode_DecodeRawUnicodeEscape(const char *s, \
+.. c:function:: PyObject* PyUnicode_DecodeRawUnicodeEscape(const char *str, \
                               Py_ssize_t size, const char *errors)
 
    Create a Unicode object by decoding *size* bytes of the Raw-Unicode-Escape
-   encoded string *s*.  Return ``NULL`` if an exception was raised by the codec.
+   encoded string *str*.  Return ``NULL`` if an exception was raised by the codec.
 
 
 .. c:function:: PyObject* PyUnicode_AsRawUnicodeEscapeString(PyObject *unicode)
@@ -1116,10 +1167,10 @@ These are the Latin-1 codec APIs: Latin-1 corresponds to the first 256 Unicode
 ordinals and only these are accepted by the codecs during encoding.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeLatin1(const char *s, Py_ssize_t size, const char *errors)
+.. c:function:: PyObject* PyUnicode_DecodeLatin1(const char *str, Py_ssize_t size, const char *errors)
 
    Create a Unicode object by decoding *size* bytes of the Latin-1 encoded string
-   *s*.  Return ``NULL`` if an exception was raised by the codec.
+   *str*.  Return ``NULL`` if an exception was raised by the codec.
 
 
 .. c:function:: PyObject* PyUnicode_AsLatin1String(PyObject *unicode)
@@ -1136,10 +1187,10 @@ These are the ASCII codec APIs.  Only 7-bit ASCII data is accepted. All other
 codes generate errors.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeASCII(const char *s, Py_ssize_t size, const char *errors)
+.. c:function:: PyObject* PyUnicode_DecodeASCII(const char *str, Py_ssize_t size, const char *errors)
 
    Create a Unicode object by decoding *size* bytes of the ASCII encoded string
-   *s*.  Return ``NULL`` if an exception was raised by the codec.
+   *str*.  Return ``NULL`` if an exception was raised by the codec.
 
 
 .. c:function:: PyObject* PyUnicode_AsASCIIString(PyObject *unicode)
@@ -1154,16 +1205,16 @@ Character Map Codecs
 
 This codec is special in that it can be used to implement many different codecs
 (and this is in fact what was done to obtain most of the standard codecs
-included in the :mod:`encodings` package). The codec uses mappings to encode and
+included in the :mod:`!encodings` package). The codec uses mappings to encode and
 decode characters.  The mapping objects provided must support the
-:meth:`__getitem__` mapping interface; dictionaries and sequences work well.
+:meth:`~object.__getitem__` mapping interface; dictionaries and sequences work well.
 
 These are the mapping codec APIs:
 
-.. c:function:: PyObject* PyUnicode_DecodeCharmap(const char *data, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeCharmap(const char *str, Py_ssize_t length, \
                               PyObject *mapping, const char *errors)
 
-   Create a Unicode object by decoding *size* bytes of the encoded string *s*
+   Create a Unicode object by decoding *size* bytes of the encoded string *str*
    using the given *mapping* object.  Return ``NULL`` if an exception was raised
    by the codec.
 
@@ -1190,7 +1241,7 @@ These are the mapping codec APIs:
 
 The following codec API is special in that maps Unicode to Unicode.
 
-.. c:function:: PyObject* PyUnicode_Translate(PyObject *str, PyObject *table, const char *errors)
+.. c:function:: PyObject* PyUnicode_Translate(PyObject *unicode, PyObject *table, const char *errors)
 
    Translate a string by applying a character mapping table to it and return the
    resulting Unicode object. Return ``NULL`` if an exception was raised by the
@@ -1199,7 +1250,7 @@ The following codec API is special in that maps Unicode to Unicode.
    The mapping table must map Unicode ordinal integers to Unicode ordinal integers
    or ``None`` (causing deletion of the character).
 
-   Mapping tables need only provide the :meth:`__getitem__` interface; dictionaries
+   Mapping tables need only provide the :meth:`~object.__getitem__` interface; dictionaries
    and sequences work well.  Unmapped character ordinals (ones which cause a
    :exc:`LookupError`) are left untouched and are copied as-is.
 
@@ -1215,13 +1266,13 @@ use the Win32 MBCS converters to implement the conversions.  Note that MBCS (or
 DBCS) is a class of encodings, not just one.  The target encoding is defined by
 the user settings on the machine running the codec.
 
-.. c:function:: PyObject* PyUnicode_DecodeMBCS(const char *s, Py_ssize_t size, const char *errors)
+.. c:function:: PyObject* PyUnicode_DecodeMBCS(const char *str, Py_ssize_t size, const char *errors)
 
-   Create a Unicode object by decoding *size* bytes of the MBCS encoded string *s*.
+   Create a Unicode object by decoding *size* bytes of the MBCS encoded string *str*.
    Return ``NULL`` if an exception was raised by the codec.
 
 
-.. c:function:: PyObject* PyUnicode_DecodeMBCSStateful(const char *s, Py_ssize_t size, \
+.. c:function:: PyObject* PyUnicode_DecodeMBCSStateful(const char *str, Py_ssize_t size, \
                               const char *errors, Py_ssize_t *consumed)
 
    If *consumed* is ``NULL``, behave like :c:func:`PyUnicode_DecodeMBCS`. If
@@ -1241,7 +1292,7 @@ the user settings on the machine running the codec.
 
    Encode the Unicode object using the specified code page and return a Python
    bytes object.  Return ``NULL`` if an exception was raised by the codec. Use
-   :c:data:`CP_ACP` code page to get the MBCS encoder.
+   :c:macro:`!CP_ACP` code page to get the MBCS encoder.
 
    .. versionadded:: 3.3
 
@@ -1267,7 +1318,7 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    Concat two strings giving a new Unicode string.
 
 
-.. c:function:: PyObject* PyUnicode_Split(PyObject *s, PyObject *sep, Py_ssize_t maxsplit)
+.. c:function:: PyObject* PyUnicode_Split(PyObject *unicode, PyObject *sep, Py_ssize_t maxsplit)
 
    Split a string giving a list of Unicode strings.  If *sep* is ``NULL``, splitting
    will be done at all whitespace substrings.  Otherwise, splits occur at the given
@@ -1275,10 +1326,10 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    set.  Separators are not included in the resulting list.
 
 
-.. c:function:: PyObject* PyUnicode_Splitlines(PyObject *s, int keepend)
+.. c:function:: PyObject* PyUnicode_Splitlines(PyObject *unicode, int keepends)
 
    Split a Unicode string at line breaks, returning a list of Unicode strings.
-   CRLF is considered to be one line break.  If *keepend* is ``0``, the line break
+   CRLF is considered to be one line break.  If *keepends* is ``0``, the Line break
    characters are not included in the resulting strings.
 
 
@@ -1288,28 +1339,28 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    Unicode string.
 
 
-.. c:function:: Py_ssize_t PyUnicode_Tailmatch(PyObject *str, PyObject *substr, \
+.. c:function:: Py_ssize_t PyUnicode_Tailmatch(PyObject *unicode, PyObject *substr, \
                         Py_ssize_t start, Py_ssize_t end, int direction)
 
-   Return ``1`` if *substr* matches ``str[start:end]`` at the given tail end
+   Return ``1`` if *substr* matches ``unicode[start:end]`` at the given tail end
    (*direction* == ``-1`` means to do a prefix match, *direction* == ``1`` a suffix match),
    ``0`` otherwise. Return ``-1`` if an error occurred.
 
 
-.. c:function:: Py_ssize_t PyUnicode_Find(PyObject *str, PyObject *substr, \
+.. c:function:: Py_ssize_t PyUnicode_Find(PyObject *unicode, PyObject *substr, \
                                Py_ssize_t start, Py_ssize_t end, int direction)
 
-   Return the first position of *substr* in ``str[start:end]`` using the given
+   Return the first position of *substr* in ``unicode[start:end]`` using the given
    *direction* (*direction* == ``1`` means to do a forward search, *direction* == ``-1`` a
    backward search).  The return value is the index of the first match; a value of
    ``-1`` indicates that no match was found, and ``-2`` indicates that an error
    occurred and an exception has been set.
 
 
-.. c:function:: Py_ssize_t PyUnicode_FindChar(PyObject *str, Py_UCS4 ch, \
+.. c:function:: Py_ssize_t PyUnicode_FindChar(PyObject *unicode, Py_UCS4 ch, \
                                Py_ssize_t start, Py_ssize_t end, int direction)
 
-   Return the first position of the character *ch* in ``str[start:end]`` using
+   Return the first position of the character *ch* in ``unicode[start:end]`` using
    the given *direction* (*direction* == ``1`` means to do a forward search,
    *direction* == ``-1`` a backward search).  The return value is the index of the
    first match; a value of ``-1`` indicates that no match was found, and ``-2``
@@ -1318,20 +1369,20 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.7
-      *start* and *end* are now adjusted to behave like ``str[start:end]``.
+      *start* and *end* are now adjusted to behave like ``unicode[start:end]``.
 
 
-.. c:function:: Py_ssize_t PyUnicode_Count(PyObject *str, PyObject *substr, \
+.. c:function:: Py_ssize_t PyUnicode_Count(PyObject *unicode, PyObject *substr, \
                                Py_ssize_t start, Py_ssize_t end)
 
    Return the number of non-overlapping occurrences of *substr* in
-   ``str[start:end]``.  Return ``-1`` if an error occurred.
+   ``unicode[start:end]``.  Return ``-1`` if an error occurred.
 
 
-.. c:function:: PyObject* PyUnicode_Replace(PyObject *str, PyObject *substr, \
+.. c:function:: PyObject* PyUnicode_Replace(PyObject *unicode, PyObject *substr, \
                               PyObject *replstr, Py_ssize_t maxcount)
 
-   Replace at most *maxcount* occurrences of *substr* in *str* with *replstr* and
+   Replace at most *maxcount* occurrences of *substr* in *unicode* with *replstr* and
    return the resulting Unicode object. *maxcount* == ``-1`` means replace all
    occurrences.
 
@@ -1345,9 +1396,31 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    :c:func:`PyErr_Occurred` to check for errors.
 
 
-.. c:function:: int PyUnicode_CompareWithASCIIString(PyObject *uni, const char *string)
+.. c:function:: int PyUnicode_EqualToUTF8AndSize(PyObject *unicode, const char *string, Py_ssize_t size)
+
+   Compare a Unicode object with a char buffer which is interpreted as
+   being UTF-8 or ASCII encoded and return true (``1``) if they are equal,
+   or false (``0``) otherwise.
+   If the Unicode object contains surrogate characters or
+   the C string is not valid UTF-8, false (``0``) is returned.
+
+   This function does not raise exceptions.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyUnicode_EqualToUTF8(PyObject *unicode, const char *string)
+
+   Similar to :c:func:`PyUnicode_EqualToUTF8AndSize`, but compute *string*
+   length using :c:func:`!strlen`.
+   If the Unicode object contains null characters, false (``0``) is returned.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: int PyUnicode_CompareWithASCIIString(PyObject *unicode, const char *string)
 
-   Compare a Unicode object, *uni*, with *string* and return ``-1``, ``0``, ``1`` for less
+   Compare a Unicode object, *unicode*, with *string* and return ``-1``, ``0``, ``1`` for less
    than, equal, and greater than, respectively. It is best to pass only
    ASCII-encoded strings, but the function interprets the input string as
    ISO-8859-1 if it contains non-ASCII characters.
@@ -1355,16 +1428,16 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    This function does not raise exceptions.
 
 
-.. c:function:: PyObject* PyUnicode_RichCompare(PyObject *left,  PyObject *right,  int op)
+.. c:function:: PyObject* PyUnicode_RichCompare(PyObject *left,  PyObject *right, int op)
 
    Rich compare two Unicode strings and return one of the following:
 
    * ``NULL`` in case an exception was raised
-   * :const:`Py_True` or :const:`Py_False` for successful comparisons
-   * :const:`Py_NotImplemented` in case the type combination is unknown
+   * :c:data:`Py_True` or :c:data:`Py_False` for successful comparisons
+   * :c:data:`Py_NotImplemented` in case the type combination is unknown
 
-   Possible values for *op* are :const:`Py_GT`, :const:`Py_GE`, :const:`Py_EQ`,
-   :const:`Py_NE`, :const:`Py_LT`, and :const:`Py_LE`.
+   Possible values for *op* are :c:macro:`Py_GT`, :c:macro:`Py_GE`, :c:macro:`Py_EQ`,
+   :c:macro:`Py_NE`, :c:macro:`Py_LT`, and :c:macro:`Py_LE`.
 
 
 .. c:function:: PyObject* PyUnicode_Format(PyObject *format, PyObject *args)
@@ -1373,29 +1446,29 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    ``format % args``.
 
 
-.. c:function:: int PyUnicode_Contains(PyObject *container, PyObject *element)
+.. c:function:: int PyUnicode_Contains(PyObject *unicode, PyObject *substr)
 
-   Check whether *element* is contained in *container* and return true or false
+   Check whether *substr* is contained in *unicode* and return true or false
    accordingly.
 
-   *element* has to coerce to a one element Unicode string. ``-1`` is returned
+   *substr* has to coerce to a one element Unicode string. ``-1`` is returned
    if there was an error.
 
 
-.. c:function:: void PyUnicode_InternInPlace(PyObject **string)
+.. c:function:: void PyUnicode_InternInPlace(PyObject **p_unicode)
 
-   Intern the argument *\*string* in place.  The argument must be the address of a
+   Intern the argument :c:expr:`*p_unicode` in place.  The argument must be the address of a
    pointer variable pointing to a Python Unicode string object.  If there is an
-   existing interned string that is the same as *\*string*, it sets *\*string* to
-   it (decrementing the reference count of the old string object and incrementing
-   the reference count of the interned string object), otherwise it leaves
-   *\*string* alone and interns it (incrementing its reference count).
-   (Clarification: even though there is a lot of talk about reference counts, think
-   of this function as reference-count-neutral; you own the object after the call
+   existing interned string that is the same as :c:expr:`*p_unicode`, it sets :c:expr:`*p_unicode` to
+   it (releasing the reference to the old string object and creating a new
+   :term:`strong reference` to the interned string object), otherwise it leaves
+   :c:expr:`*p_unicode` alone and interns it (creating a new :term:`strong reference`).
+   (Clarification: even though there is a lot of talk about references, think
+   of this function as reference-neutral; you own the object after the call
    if and only if you owned it before the call.)
 
 
-.. c:function:: PyObject* PyUnicode_InternFromString(const char *v)
+.. c:function:: PyObject* PyUnicode_InternFromString(const char *str)
 
    A combination of :c:func:`PyUnicode_FromString` and
    :c:func:`PyUnicode_InternInPlace`, returning either a new Unicode string
diff --git a/Doc/c-api/utilities.rst b/Doc/c-api/utilities.rst
index a805b564763c40..48ae54acebe887 100644
--- a/Doc/c-api/utilities.rst
+++ b/Doc/c-api/utilities.rst
@@ -17,5 +17,7 @@ and parsing function arguments and constructing Python values from C values.
    marshal.rst
    arg.rst
    conversion.rst
+   hash.rst
    reflection.rst
    codec.rst
+   perfmaps.rst
diff --git a/Doc/c-api/veryhigh.rst b/Doc/c-api/veryhigh.rst
index 513856d8a48d70..324518c035096b 100644
--- a/Doc/c-api/veryhigh.rst
+++ b/Doc/c-api/veryhigh.rst
@@ -12,12 +12,12 @@ file or a buffer, but they will not let you interact in a more detailed way with
 the interpreter.
 
 Several of these functions accept a start symbol from the grammar as a
-parameter.  The available start symbols are :const:`Py_eval_input`,
-:const:`Py_file_input`, and :const:`Py_single_input`.  These are described
+parameter.  The available start symbols are :c:data:`Py_eval_input`,
+:c:data:`Py_file_input`, and :c:data:`Py_single_input`.  These are described
 following the functions which accept them as parameters.
 
 Note also that several of these functions take :c:expr:`FILE*` parameters.  One
-particular issue which needs to be handled carefully is that the :c:expr:`FILE`
+particular issue which needs to be handled carefully is that the :c:type:`FILE`
 structure for different C libraries can be different and incompatible.  Under
 Windows (at least), it is possible for dynamically linked extensions to actually
 use different libraries, so care should be taken that :c:expr:`FILE*` parameters
@@ -167,6 +167,10 @@ the same library that the Python runtime is using.
    event loops, as done in the :file:`Modules/_tkinter.c` in the
    Python source code.
 
+   .. versionchanged:: 3.12
+      This function is only called from the
+      :ref:`main interpreter <sub-interpreter-support>`.
+
 
 .. c:var:: char* (*PyOS_ReadlineFunctionPointer)(FILE *, FILE *, const char *)
 
@@ -187,6 +191,10 @@ the same library that the Python runtime is using.
       :c:func:`PyMem_RawRealloc`, instead of being allocated by
       :c:func:`PyMem_Malloc` or :c:func:`PyMem_Realloc`.
 
+   .. versionchanged:: 3.12
+      This function is only called from the
+      :ref:`main interpreter <sub-interpreter-support>`.
+
 .. c:function:: PyObject* PyRun_String(const char *str, int start, PyObject *globals, PyObject *locals)
 
    This is a simplified interface to :c:func:`PyRun_StringFlags` below, leaving
@@ -248,8 +256,8 @@ the same library that the Python runtime is using.
 
    Parse and compile the Python source code in *str*, returning the resulting code
    object.  The start token is given by *start*; this can be used to constrain the
-   code which can be compiled and should be :const:`Py_eval_input`,
-   :const:`Py_file_input`, or :const:`Py_single_input`.  The filename specified by
+   code which can be compiled and should be :c:data:`Py_eval_input`,
+   :c:data:`Py_file_input`, or :c:data:`Py_single_input`.  The filename specified by
    *filename* is used to construct the code object and may appear in tracebacks or
    :exc:`SyntaxError` exception messages.  This returns ``NULL`` if the code
    cannot be parsed or compiled.
@@ -345,7 +353,7 @@ the same library that the Python runtime is using.
    executed, it is passed as ``PyCompilerFlags *flags``.  In this case, ``from
    __future__ import`` can modify *flags*.
 
-   Whenever ``PyCompilerFlags *flags`` is ``NULL``, :attr:`cf_flags` is treated as
+   Whenever ``PyCompilerFlags *flags`` is ``NULL``, :c:member:`~PyCompilerFlags.cf_flags` is treated as
    equal to ``0``, and any modification due to ``from __future__ import`` is
    discarded.
 
@@ -359,7 +367,7 @@ the same library that the Python runtime is using.
       initialized to ``PY_MINOR_VERSION``.
 
       The field is ignored by default, it is used if and only if
-      ``PyCF_ONLY_AST`` flag is set in *cf_flags*.
+      ``PyCF_ONLY_AST`` flag is set in :c:member:`~PyCompilerFlags.cf_flags`.
 
    .. versionchanged:: 3.8
       Added *cf_feature_version* field.
diff --git a/Doc/c-api/weakref.rst b/Doc/c-api/weakref.rst
index f27ec4411b4a26..038f54a9751fd1 100644
--- a/Doc/c-api/weakref.rst
+++ b/Doc/c-api/weakref.rst
@@ -11,20 +11,20 @@ simple reference object, and the second acts as a proxy for the original object
 as much as it can.
 
 
-.. c:function:: int PyWeakref_Check(ob)
+.. c:function:: int PyWeakref_Check(PyObject *ob)
 
-   Return true if *ob* is either a reference or proxy object.  This function
+   Return non-zero if *ob* is either a reference or proxy object.  This function
    always succeeds.
 
 
-.. c:function:: int PyWeakref_CheckRef(ob)
+.. c:function:: int PyWeakref_CheckRef(PyObject *ob)
 
-   Return true if *ob* is a reference object.  This function always succeeds.
+   Return non-zero if *ob* is a reference object.  This function always succeeds.
 
 
-.. c:function:: int PyWeakref_CheckProxy(ob)
+.. c:function:: int PyWeakref_CheckProxy(PyObject *ob)
 
-   Return true if *ob* is a proxy object.  This function always succeeds.
+   Return non-zero if *ob* is a proxy object.  This function always succeeds.
 
 
 .. c:function:: PyObject* PyWeakref_NewRef(PyObject *ob, PyObject *callback)
@@ -51,10 +51,23 @@ as much as it can.
    ``None``, or ``NULL``, this will return ``NULL`` and raise :exc:`TypeError`.
 
 
+.. c:function:: int PyWeakref_GetRef(PyObject *ref, PyObject **pobj)
+
+   Get a :term:`strong reference` to the referenced object from a weak
+   reference, *ref*, into *\*pobj*.
+
+   * On success, set *\*pobj* to a new :term:`strong reference` to the
+     referenced object and return 1.
+   * If the reference is dead, set *\*pobj* to ``NULL`` and return 0.
+   * On error, raise an exception and return -1.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: PyObject* PyWeakref_GetObject(PyObject *ref)
 
-   Return the referenced object from a weak reference, *ref*.  If the referent is
-   no longer live, returns :const:`Py_None`.
+   Return a :term:`borrowed reference` to the referenced object from a weak
+   reference, *ref*.  If the referent is no longer live, returns ``Py_None``.
 
    .. note::
 
@@ -63,11 +76,17 @@ as much as it can.
       except when it cannot be destroyed before the last usage of the borrowed
       reference.
 
+   .. deprecated-removed:: 3.13 3.15
+      Use :c:func:`PyWeakref_GetRef` instead.
+
 
 .. c:function:: PyObject* PyWeakref_GET_OBJECT(PyObject *ref)
 
    Similar to :c:func:`PyWeakref_GetObject`, but does no error checking.
 
+   .. deprecated-removed:: 3.13 3.15
+      Use :c:func:`PyWeakref_GetRef` instead.
+
 
 .. c:function:: void PyObject_ClearWeakRefs(PyObject *object)
 
diff --git a/Doc/conf.py b/Doc/conf.py
index 485c0bdf84df2e..f2d36fdc70430c 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -24,7 +24,13 @@
     'sphinx.ext.doctest',
 ]
 
-# Skip if downstream redistributors haven't installed it
+# Skip if downstream redistributors haven't installed them
+try:
+    import notfound.extension
+except ImportError:
+    pass
+else:
+    extensions.append('notfound.extension')
 try:
     import sphinxext.opengraph
 except ImportError:
@@ -66,7 +72,7 @@
 highlight_language = 'python3'
 
 # Minimum version of sphinx required
-needs_sphinx = '3.2'
+needs_sphinx = '4.2'
 
 # Ignore any .rst files in the includes/ directory;
 # they're embedded in pages but not rendered individually.
@@ -77,12 +83,179 @@
     exclude_patterns.append(venvdir + '/*')
 
 nitpick_ignore = [
+    # Standard C functions
+    ('c:func', 'calloc'),
+    ('c:func', 'dlopen'),
+    ('c:func', 'exec'),
+    ('c:func', 'fcntl'),
+    ('c:func', 'fork'),
+    ('c:func', 'free'),
+    ('c:func', 'gmtime'),
+    ('c:func', 'localtime'),
+    ('c:func', 'main'),
+    ('c:func', 'malloc'),
+    ('c:func', 'printf'),
+    ('c:func', 'realloc'),
+    ('c:func', 'snprintf'),
+    ('c:func', 'sprintf'),
+    ('c:func', 'stat'),
+    ('c:func', 'system'),
+    ('c:func', 'time'),
+    ('c:func', 'vsnprintf'),
+    # Standard C types
+    ('c:type', 'FILE'),
+    ('c:type', 'int64_t'),
+    ('c:type', 'intmax_t'),
+    ('c:type', 'off_t'),
+    ('c:type', 'ptrdiff_t'),
+    ('c:type', 'siginfo_t'),
+    ('c:type', 'size_t'),
+    ('c:type', 'ssize_t'),
+    ('c:type', 'time_t'),
+    ('c:type', 'uint64_t'),
+    ('c:type', 'uintmax_t'),
+    ('c:type', 'uintptr_t'),
+    ('c:type', 'va_list'),
+    ('c:type', 'wchar_t'),
+    ('c:type', '__int64'),
+    ('c:type', 'unsigned __int64'),
+    # Standard C structures
+    ('c:struct', 'in6_addr'),
+    ('c:struct', 'in_addr'),
+    ('c:struct', 'stat'),
+    ('c:struct', 'statvfs'),
+    # Standard C macros
+    ('c:macro', 'LLONG_MAX'),
+    ('c:macro', 'LLONG_MIN'),
+    ('c:macro', 'LONG_MAX'),
+    ('c:macro', 'LONG_MIN'),
+    # Standard C variables
+    ('c:data', 'errno'),
+    # Standard environment variables
+    ('envvar', 'BROWSER'),
+    ('envvar', 'COLUMNS'),
+    ('envvar', 'COMSPEC'),
+    ('envvar', 'DISPLAY'),
+    ('envvar', 'HOME'),
+    ('envvar', 'HOMEDRIVE'),
+    ('envvar', 'HOMEPATH'),
+    ('envvar', 'IDLESTARTUP'),
+    ('envvar', 'LANG'),
+    ('envvar', 'LANGUAGE'),
+    ('envvar', 'LC_ALL'),
+    ('envvar', 'LC_CTYPE'),
+    ('envvar', 'LC_COLLATE'),
+    ('envvar', 'LC_MESSAGES'),
+    ('envvar', 'LC_MONETARY'),
+    ('envvar', 'LC_NUMERIC'),
+    ('envvar', 'LC_TIME'),
+    ('envvar', 'LINES'),
+    ('envvar', 'LOGNAME'),
+    ('envvar', 'PAGER'),
+    ('envvar', 'PATH'),
+    ('envvar', 'PATHEXT'),
+    ('envvar', 'SOURCE_DATE_EPOCH'),
+    ('envvar', 'TEMP'),
+    ('envvar', 'TERM'),
+    ('envvar', 'TMP'),
+    ('envvar', 'TMPDIR'),
+    ('envvar', 'TZ'),
+    ('envvar', 'USER'),
+    ('envvar', 'USERNAME'),
+    ('envvar', 'USERPROFILE'),
+    # Deprecated function that was never documented:
+    ('py:func', 'getargspec'),
+    ('py:func', 'inspect.getargspec'),
+    # Undocumented modules that users shouldn't have to worry about
+    # (implementation details of `os.path`):
+    ('py:mod', 'ntpath'),
+    ('py:mod', 'posixpath'),
+]
+
+# Temporary undocumented names.
+# In future this list must be empty.
+nitpick_ignore += [
+    # C API: Standard Python exception classes
+    ('c:data', 'PyExc_ArithmeticError'),
+    ('c:data', 'PyExc_AssertionError'),
+    ('c:data', 'PyExc_AttributeError'),
+    ('c:data', 'PyExc_BaseException'),
+    ('c:data', 'PyExc_BlockingIOError'),
+    ('c:data', 'PyExc_BrokenPipeError'),
+    ('c:data', 'PyExc_BufferError'),
+    ('c:data', 'PyExc_ChildProcessError'),
+    ('c:data', 'PyExc_ConnectionAbortedError'),
+    ('c:data', 'PyExc_ConnectionError'),
+    ('c:data', 'PyExc_ConnectionRefusedError'),
+    ('c:data', 'PyExc_ConnectionResetError'),
+    ('c:data', 'PyExc_EOFError'),
+    ('c:data', 'PyExc_Exception'),
+    ('c:data', 'PyExc_FileExistsError'),
+    ('c:data', 'PyExc_FileNotFoundError'),
+    ('c:data', 'PyExc_FloatingPointError'),
+    ('c:data', 'PyExc_GeneratorExit'),
+    ('c:data', 'PyExc_ImportError'),
+    ('c:data', 'PyExc_IndentationError'),
+    ('c:data', 'PyExc_IndexError'),
+    ('c:data', 'PyExc_InterruptedError'),
+    ('c:data', 'PyExc_IsADirectoryError'),
+    ('c:data', 'PyExc_KeyboardInterrupt'),
+    ('c:data', 'PyExc_KeyError'),
+    ('c:data', 'PyExc_LookupError'),
+    ('c:data', 'PyExc_MemoryError'),
+    ('c:data', 'PyExc_ModuleNotFoundError'),
+    ('c:data', 'PyExc_NameError'),
+    ('c:data', 'PyExc_NotADirectoryError'),
+    ('c:data', 'PyExc_NotImplementedError'),
+    ('c:data', 'PyExc_OSError'),
+    ('c:data', 'PyExc_OverflowError'),
+    ('c:data', 'PyExc_PermissionError'),
+    ('c:data', 'PyExc_ProcessLookupError'),
+    ('c:data', 'PyExc_RecursionError'),
+    ('c:data', 'PyExc_ReferenceError'),
+    ('c:data', 'PyExc_RuntimeError'),
+    ('c:data', 'PyExc_StopAsyncIteration'),
+    ('c:data', 'PyExc_StopIteration'),
+    ('c:data', 'PyExc_SyntaxError'),
+    ('c:data', 'PyExc_SystemError'),
+    ('c:data', 'PyExc_SystemExit'),
+    ('c:data', 'PyExc_TabError'),
+    ('c:data', 'PyExc_TimeoutError'),
+    ('c:data', 'PyExc_TypeError'),
+    ('c:data', 'PyExc_UnboundLocalError'),
+    ('c:data', 'PyExc_UnicodeDecodeError'),
+    ('c:data', 'PyExc_UnicodeEncodeError'),
+    ('c:data', 'PyExc_UnicodeError'),
+    ('c:data', 'PyExc_UnicodeTranslateError'),
+    ('c:data', 'PyExc_ValueError'),
+    ('c:data', 'PyExc_ZeroDivisionError'),
+    # C API: Standard Python warning classes
+    ('c:data', 'PyExc_BytesWarning'),
+    ('c:data', 'PyExc_DeprecationWarning'),
+    ('c:data', 'PyExc_FutureWarning'),
+    ('c:data', 'PyExc_ImportWarning'),
+    ('c:data', 'PyExc_PendingDeprecationWarning'),
+    ('c:data', 'PyExc_ResourceWarning'),
+    ('c:data', 'PyExc_RuntimeWarning'),
+    ('c:data', 'PyExc_SyntaxWarning'),
+    ('c:data', 'PyExc_UnicodeWarning'),
+    ('c:data', 'PyExc_UserWarning'),
+    ('c:data', 'PyExc_Warning'),
     # Do not error nit-picky mode builds when _SubParsersAction.add_parser cannot
     # be resolved, as the method is currently undocumented. For context, see
     # https://github.com/python/cpython/pull/103289.
     ('py:meth', '_SubParsersAction.add_parser'),
 ]
 
+# gh-106948: Copy standard C types declared in the "c:type" domain to the
+# "c:identifier" domain, since "c:function" markup looks for types in the
+# "c:identifier" domain. Use list() to not iterate on items which are being
+# added
+for role, name in list(nitpick_ignore):
+    if role == 'c:type':
+        nitpick_ignore.append(('c:identifier', name))
+del role, name
+
 # Disable Docutils smartquotes for several translations
 smartquotes_excludes = {
     'languages': ['ja', 'fr', 'zh_TW', 'zh_CN'], 'builders': ['man', 'text'],
@@ -128,9 +301,8 @@
     "pr_id": os.getenv("READTHEDOCS_VERSION")
 }
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-html_last_updated_fmt = '%b %d, %Y'
+# This 'Last updated on:' timestamp is inserted at the bottom of every page.
+html_last_updated_fmt = time.strftime('%b %d, %Y (%H:%M UTC)', time.gmtime())
 
 # Path to find HTML templates.
 templates_path = ['tools/templates']
@@ -194,8 +366,6 @@
 latex_documents = [
     ('c-api/index', 'c-api.tex',
      'The Python/C API', _stdauthor, 'manual'),
-    ('distributing/index', 'distributing.tex',
-     'Distributing Python Modules', _stdauthor, 'manual'),
     ('extending/index', 'extending.tex',
      'Extending and Embedding Python', _stdauthor, 'manual'),
     ('installing/index', 'installing.tex',
@@ -235,7 +405,6 @@
 # match any of the following regexes (using re.match).
 coverage_ignore_modules = [
     r'[T|t][k|K]',
-    r'Tix',
 ]
 
 coverage_ignore_functions = [
diff --git a/Doc/constraints.txt b/Doc/constraints.txt
index 66c748eb092d83..147de1271eb2b7 100644
--- a/Doc/constraints.txt
+++ b/Doc/constraints.txt
@@ -10,8 +10,7 @@ colorama<0.5
 imagesize<1.5
 Jinja2<3.2
 packaging<24
-# Pygments==2.15.0 breaks CI
-Pygments<2.16,!=2.15.0
+Pygments>=2.16.1,<3
 requests<3
 snowballstemmer<3
 sphinxcontrib-applehelp<1.1
@@ -23,7 +22,3 @@ sphinxcontrib-serializinghtml<1.2
 
 # Direct dependencies of Jinja2 (Jinja is a dependency of Sphinx, see above)
 MarkupSafe<2.2
-
-# Direct dependencies of sphinx-lint
-polib<1.3
-regex<2024
diff --git a/Doc/contents.rst b/Doc/contents.rst
index 464f93bdf85f95..24ceacb0076b5e 100644
--- a/Doc/contents.rst
+++ b/Doc/contents.rst
@@ -11,7 +11,6 @@
    library/index.rst
    extending/index.rst
    c-api/index.rst
-   distributing/index.rst
    installing/index.rst
    howto/index.rst
    faq/index.rst
@@ -21,10 +20,3 @@
    bugs.rst
    copyright.rst
    license.rst
-
-.. to include legacy packaging docs in build
-
-.. toctree::
-   :hidden:
-
-   install/index.rst
diff --git a/Doc/data/refcounts.dat b/Doc/data/refcounts.dat
index ee64ffdc91662e..ef9ac1617a284b 100644
--- a/Doc/data/refcounts.dat
+++ b/Doc/data/refcounts.dat
@@ -764,8 +764,6 @@ PyErr_WarnFormat::...::
 PyErr_WriteUnraisable:void:::
 PyErr_WriteUnraisable:PyObject*:obj:0:
 
-PyEval_AcquireLock:void:::
-
 PyEval_AcquireThread:void:::
 PyEval_AcquireThread:PyThreadState*:tstate::
 
@@ -783,10 +781,6 @@ PyEval_GetFuncDesc:PyObject*:func:0:
 PyEval_GetFuncName:const char*:::
 PyEval_GetFuncName:PyObject*:func:0:
 
-PyEval_InitThreads:void:::
-
-PyEval_ReleaseLock:void:::
-
 PyEval_ReleaseThread:void:::
 PyEval_ReleaseThread:PyThreadState*:tstate::
 
@@ -980,6 +974,9 @@ PyCoro_New:PyFrameObject*:frame:0:
 PyCoro_New:PyObject*:name:0:
 PyCoro_New:PyObject*:qualname:0:
 
+PyImport_AddModuleRef:PyObject*::+1:
+PyImport_AddModuleRef:const char*:name::
+
 PyImport_AddModule:PyObject*::0:reference borrowed from sys.modules
 PyImport_AddModule:const char*:name::
 
@@ -1584,21 +1581,6 @@ PyOS_FSPath:PyObject*:path:0:
 PyObject_ASCII:PyObject*::+1:
 PyObject_ASCII:PyObject*:o:0:
 
-PyObject_AsCharBuffer:int:::
-PyObject_AsCharBuffer:PyObject*:obj:0:
-PyObject_AsCharBuffer:const char**:buffer::
-PyObject_AsCharBuffer:Py_ssize_t*:buffer_len::
-
-PyObject_AsReadBuffer:int:::
-PyObject_AsReadBuffer:PyObject*:obj:0:
-PyObject_AsReadBuffer:const void**:buffer::
-PyObject_AsReadBuffer:Py_ssize_t*:buffer_len::
-
-PyObject_AsWriteBuffer:int:::
-PyObject_AsWriteBuffer:PyObject*:obj:0:
-PyObject_AsWriteBuffer:void**:buffer::
-PyObject_AsWriteBuffer:Py_ssize_t*:buffer_len::
-
 PyObject_Bytes:PyObject*::+1:
 PyObject_Bytes:PyObject*:o:0:
 
@@ -1815,6 +1797,9 @@ PyObject_Size:PyObject*:o:0:
 PyObject_Str:PyObject*::+1:
 PyObject_Str:PyObject*:o:0:
 
+Py_TYPE:PyObject*::0:
+Py_TYPE:PyObject*:ob:0:
+
 PyObject_Type:PyObject*::+1:
 PyObject_Type:PyObject*:o:0:
 
@@ -2374,76 +2359,56 @@ PyUnicode_KIND:PyObject*:o:0:
 PyUnicode_MAX_CHAR_VALUE::::
 PyUnicode_MAX_CHAR_VALUE:PyObject*:o:0:
 
-PyUnicode_AS_UNICODE:Py_UNICODE*:::
-PyUnicode_AS_UNICODE:PyObject*:o:0:
-
-PyUnicode_AS_DATA:const char*:::
-PyUnicode_AS_DATA:PyObject*:o:0:
-
 Py_UNICODE_ISALNUM:int:::
-Py_UNICODE_ISALNUM:Py_UNICODE:ch::
+Py_UNICODE_ISALNUM:Py_UCS4:ch::
 
 Py_UNICODE_ISALPHA:int:::
-Py_UNICODE_ISALPHA:Py_UNICODE:ch::
+Py_UNICODE_ISALPHA:Py_UCS4:ch::
 
 Py_UNICODE_ISSPACE:int:::
-Py_UNICODE_ISSPACE:Py_UNICODE:ch::
+Py_UNICODE_ISSPACE:Py_UCS4:ch::
 
 Py_UNICODE_ISLOWER:int:::
-Py_UNICODE_ISLOWER:Py_UNICODE:ch::
+Py_UNICODE_ISLOWER:Py_UCS4:ch::
 
 Py_UNICODE_ISUPPER:int:::
-Py_UNICODE_ISUPPER:Py_UNICODE:ch::
+Py_UNICODE_ISUPPER:Py_UCS4:ch::
 
 Py_UNICODE_ISTITLE:int:::
-Py_UNICODE_ISTITLE:Py_UNICODE:ch::
+Py_UNICODE_ISTITLE:Py_UCS4:ch::
 
 Py_UNICODE_ISLINEBREAK:int:::
-Py_UNICODE_ISLINEBREAK:Py_UNICODE:ch::
+Py_UNICODE_ISLINEBREAK:Py_UCS4:ch::
 
 Py_UNICODE_ISDECIMAL:int:::
-Py_UNICODE_ISDECIMAL:Py_UNICODE:ch::
+Py_UNICODE_ISDECIMAL:Py_UCS4:ch::
 
 Py_UNICODE_ISDIGIT:int:::
-Py_UNICODE_ISDIGIT:Py_UNICODE:ch::
+Py_UNICODE_ISDIGIT:Py_UCS4:ch::
 
 Py_UNICODE_ISNUMERIC:int:::
-Py_UNICODE_ISNUMERIC:Py_UNICODE:ch::
+Py_UNICODE_ISNUMERIC:Py_UCS4:ch::
 
 Py_UNICODE_ISPRINTABLE:int:::
-Py_UNICODE_ISPRINTABLE:Py_UNICODE:ch::
+Py_UNICODE_ISPRINTABLE:Py_UCS4:ch::
 
-Py_UNICODE_TOLOWER:Py_UNICODE:::
-Py_UNICODE_TOLOWER:Py_UNICODE:ch::
+Py_UNICODE_TOLOWER:Py_UCS4:::
+Py_UNICODE_TOLOWER:Py_UCS4:ch::
 
-Py_UNICODE_TOUPPER:Py_UNICODE:::
-Py_UNICODE_TOUPPER:Py_UNICODE:ch::
+Py_UNICODE_TOUPPER:Py_UCS4:::
+Py_UNICODE_TOUPPER:Py_UCS4:ch::
 
-Py_UNICODE_TOTITLE:Py_UNICODE:::
-Py_UNICODE_TOTITLE:Py_UNICODE:ch::
+Py_UNICODE_TOTITLE:Py_UCS4:::
+Py_UNICODE_TOTITLE:Py_UCS4:ch::
 
 Py_UNICODE_TODECIMAL:int:::
-Py_UNICODE_TODECIMAL:Py_UNICODE:ch::
+Py_UNICODE_TODECIMAL:Py_UCS4:ch::
 
 Py_UNICODE_TODIGIT:int:::
-Py_UNICODE_TODIGIT:Py_UNICODE:ch::
+Py_UNICODE_TODIGIT:Py_UCS4:ch::
 
 Py_UNICODE_TONUMERIC:double:::
-Py_UNICODE_TONUMERIC:Py_UNICODE:ch::
-
-PyUnicode_FromUnicode:PyObject*::+1:
-PyUnicode_FromUnicode:const Py_UNICODE*:u::
-PyUnicode_FromUnicode:Py_ssize_t:size::
-
-PyUnicode_AsUnicode:Py_UNICODE*:::
-PyUnicode_AsUnicode:PyObject*:unicode:0:
-
-PyUnicode_AsUnicodeAndSize:Py_UNICODE*:::
-PyUnicode_AsUnicodeAndSize:PyObject*:unicode:0:
-PyUnicode_AsUnicodeAndSize:Py_ssize_t*:size::
-
-PyUnicode_GetSize:Py_ssize_t:::
-PyUnicode_GetSize:PyObject*:unicode:0:
+Py_UNICODE_TONUMERIC:Py_UCS4:ch::
 
 PyUnicode_FromObject:PyObject*::+1:
 PyUnicode_FromObject:PyObject*:obj:0:
@@ -2848,6 +2813,10 @@ PyWeakref_GET_OBJECT:PyObject*:ref:0:
 PyWeakref_GetObject:PyObject*::0:
 PyWeakref_GetObject:PyObject*:ref:0:
 
+PyWeakref_GetRef:int:::
+PyWeakref_GetRef:PyObject*:ref:0:
+PyWeakref_GetRef:PyObject**:pobj:+1:
+
 PyWeakref_NewProxy:PyObject*::+1:
 PyWeakref_NewProxy:PyObject*:ob:0:
 PyWeakref_NewProxy:PyObject*:callback:0:
diff --git a/Doc/data/stable_abi.dat b/Doc/data/stable_abi.dat
index f112d268129fd1..811b1bd84d2417 100644
--- a/Doc/data/stable_abi.dat
+++ b/Doc/data/stable_abi.dat
@@ -43,7 +43,6 @@ function,PyBytes_Size,3.2,,
 var,PyBytes_Type,3.2,,
 type,PyCFunction,3.2,,
 type,PyCFunctionWithKeywords,3.2,,
-function,PyCFunction_Call,3.2,,
 function,PyCFunction_GetFlags,3.2,,
 function,PyCFunction_GetFunction,3.2,,
 function,PyCFunction_GetSelf,3.2,,
@@ -112,7 +111,9 @@ function,PyDict_Copy,3.2,,
 function,PyDict_DelItem,3.2,,
 function,PyDict_DelItemString,3.2,,
 function,PyDict_GetItem,3.2,,
+function,PyDict_GetItemRef,3.13,,
 function,PyDict_GetItemString,3.2,,
+function,PyDict_GetItemStringRef,3.13,,
 function,PyDict_GetItemWithError,3.2,,
 function,PyDict_Items,3.2,,
 function,PyDict_Keys,3.2,,
@@ -178,11 +179,7 @@ function,PyErr_WarnEx,3.2,,
 function,PyErr_WarnExplicit,3.2,,
 function,PyErr_WarnFormat,3.2,,
 function,PyErr_WriteUnraisable,3.2,,
-function,PyEval_AcquireLock,3.2,,
 function,PyEval_AcquireThread,3.2,,
-function,PyEval_CallFunction,3.2,,
-function,PyEval_CallMethod,3.2,,
-function,PyEval_CallObjectWithKeywords,3.2,,
 function,PyEval_EvalCode,3.2,,
 function,PyEval_EvalCodeEx,3.2,,
 function,PyEval_EvalFrame,3.2,,
@@ -193,12 +190,9 @@ function,PyEval_GetFuncDesc,3.2,,
 function,PyEval_GetFuncName,3.2,,
 function,PyEval_GetGlobals,3.2,,
 function,PyEval_GetLocals,3.2,,
-function,PyEval_InitThreads,3.2,,
-function,PyEval_ReleaseLock,3.2,,
 function,PyEval_ReleaseThread,3.2,,
 function,PyEval_RestoreThread,3.2,,
 function,PyEval_SaveThread,3.2,,
-function,PyEval_ThreadsInitialized,3.2,,
 var,PyExc_ArithmeticError,3.2,,
 var,PyExc_AssertionError,3.2,,
 var,PyExc_AttributeError,3.2,,
@@ -306,6 +300,7 @@ type,PyGetSetDef,3.2,,full-abi
 var,PyGetSetDescr_Type,3.2,,
 function,PyImport_AddModule,3.2,,
 function,PyImport_AddModuleObject,3.7,,
+function,PyImport_AddModuleRef,3.13,,
 function,PyImport_AppendInittab,3.2,,
 function,PyImport_ExecCodeModule,3.2,,
 function,PyImport_ExecCodeModuleEx,3.2,,
@@ -352,6 +347,7 @@ var,PyList_Type,3.2,,
 type,PyLongObject,3.2,,opaque
 var,PyLongRangeIter_Type,3.2,,
 function,PyLong_AsDouble,3.2,,
+function,PyLong_AsInt,3.13,,
 function,PyLong_AsLong,3.2,,
 function,PyLong_AsLongAndOverflow,3.2,,
 function,PyLong_AsLongLong,3.2,,
@@ -377,8 +373,12 @@ var,PyLong_Type,3.2,,
 var,PyMap_Type,3.2,,
 function,PyMapping_Check,3.2,,
 function,PyMapping_GetItemString,3.2,,
+function,PyMapping_GetOptionalItem,3.13,,
+function,PyMapping_GetOptionalItemString,3.13,,
 function,PyMapping_HasKey,3.2,,
 function,PyMapping_HasKeyString,3.2,,
+function,PyMapping_HasKeyStringWithError,3.13,,
+function,PyMapping_HasKeyWithError,3.13,,
 function,PyMapping_Items,3.2,,
 function,PyMapping_Keys,3.2,,
 function,PyMapping_Length,3.2,,
@@ -388,6 +388,10 @@ function,PyMapping_Values,3.2,,
 function,PyMem_Calloc,3.7,,
 function,PyMem_Free,3.2,,
 function,PyMem_Malloc,3.2,,
+function,PyMem_RawCalloc,3.13,,
+function,PyMem_RawFree,3.13,,
+function,PyMem_RawMalloc,3.13,,
+function,PyMem_RawRealloc,3.13,,
 function,PyMem_Realloc,3.2,,
 type,PyMemberDef,3.2,,full-abi
 var,PyMemberDescr_Type,3.2,,
@@ -404,6 +408,7 @@ type,PyModuleDef,3.2,,full-abi
 type,PyModuleDef_Base,3.2,,full-abi
 function,PyModuleDef_Init,3.5,,
 var,PyModuleDef_Type,3.5,,
+function,PyModule_Add,3.13,,
 function,PyModule_AddFunctions,3.7,,
 function,PyModule_AddIntConstant,3.2,,
 function,PyModule_AddObject,3.2,,
@@ -484,10 +489,7 @@ type,PyObject,3.2,,members
 member,PyObject.ob_refcnt,3.2,,
 member,PyObject.ob_type,3.2,,
 function,PyObject_ASCII,3.2,,
-function,PyObject_AsCharBuffer,3.2,,
 function,PyObject_AsFileDescriptor,3.2,,
-function,PyObject_AsReadBuffer,3.2,,
-function,PyObject_AsWriteBuffer,3.2,,
 function,PyObject_Bytes,3.2,,
 function,PyObject_Call,3.2,,
 function,PyObject_CallFunction,3.2,,
@@ -498,9 +500,10 @@ function,PyObject_CallNoArgs,3.10,,
 function,PyObject_CallObject,3.2,,
 function,PyObject_Calloc,3.7,,
 function,PyObject_CheckBuffer,3.11,,
-function,PyObject_CheckReadBuffer,3.2,,
 function,PyObject_ClearWeakRefs,3.2,,
 function,PyObject_CopyData,3.11,,
+function,PyObject_DelAttr,3.13,,
+function,PyObject_DelAttrString,3.13,,
 function,PyObject_DelItem,3.2,,
 function,PyObject_DelItemString,3.2,,
 function,PyObject_Dir,3.2,,
@@ -521,9 +524,13 @@ function,PyObject_GetAttrString,3.2,,
 function,PyObject_GetBuffer,3.11,,
 function,PyObject_GetItem,3.2,,
 function,PyObject_GetIter,3.2,,
+function,PyObject_GetOptionalAttr,3.13,,
+function,PyObject_GetOptionalAttrString,3.13,,
 function,PyObject_GetTypeData,3.12,,
 function,PyObject_HasAttr,3.2,,
 function,PyObject_HasAttrString,3.2,,
+function,PyObject_HasAttrStringWithError,3.13,,
+function,PyObject_HasAttrWithError,3.13,,
 function,PyObject_Hash,3.2,,
 function,PyObject_HashNotImplemented,3.2,,
 function,PyObject_Init,3.2,,
@@ -599,19 +606,14 @@ function,PyStructSequence_NewType,3.2,,
 function,PyStructSequence_SetItem,3.2,,
 var,PyStructSequence_UnnamedField,3.11,,
 var,PySuper_Type,3.2,,
-function,PySys_AddWarnOption,3.2,,
-function,PySys_AddWarnOptionUnicode,3.2,,
-function,PySys_AddXOption,3.7,,
+function,PySys_Audit,3.13,,
+function,PySys_AuditTuple,3.13,,
 function,PySys_FormatStderr,3.2,,
 function,PySys_FormatStdout,3.2,,
 function,PySys_GetObject,3.2,,
 function,PySys_GetXOptions,3.7,,
-function,PySys_HasWarnOptions,3.2,,
 function,PySys_ResetWarnOptions,3.2,,
-function,PySys_SetArgv,3.2,,
-function,PySys_SetArgvEx,3.2,,
 function,PySys_SetObject,3.2,,
-function,PySys_SetPath,3.2,,
 function,PySys_WriteStderr,3.2,,
 function,PySys_WriteStdout,3.2,,
 type,PyThreadState,3.2,,opaque
@@ -759,6 +761,8 @@ function,PyUnicode_DecodeUnicodeEscape,3.2,,
 function,PyUnicode_EncodeCodePage,3.7,on Windows,
 function,PyUnicode_EncodeFSDefault,3.2,,
 function,PyUnicode_EncodeLocale,3.7,,
+function,PyUnicode_EqualToUTF8,3.13,,
+function,PyUnicode_EqualToUTF8AndSize,3.13,,
 function,PyUnicode_FSConverter,3.2,,
 function,PyUnicode_FSDecoder,3.2,,
 function,PyUnicode_Find,3.2,,
@@ -799,6 +803,7 @@ function,PyVectorcall_Call,3.12,,
 function,PyVectorcall_NARGS,3.12,,
 type,PyWeakReference,3.2,,opaque
 function,PyWeakref_GetObject,3.2,,
+function,PyWeakref_GetRef,3.13,,
 function,PyWeakref_NewProxy,3.2,,
 function,PyWeakref_NewRef,3.2,,
 var,PyWrapperDescr_Type,3.2,,
@@ -843,6 +848,7 @@ function,Py_Initialize,3.2,,
 function,Py_InitializeEx,3.2,,
 function,Py_Is,3.10,,
 function,Py_IsFalse,3.10,,
+function,Py_IsFinalizing,3.13,,
 function,Py_IsInitialized,3.2,,
 function,Py_IsNone,3.10,,
 function,Py_IsTrue,3.10,,
@@ -853,9 +859,6 @@ function,Py_NewInterpreter,3.2,,
 function,Py_NewRef,3.10,,
 function,Py_ReprEnter,3.2,,
 function,Py_ReprLeave,3.2,,
-function,Py_SetPath,3.7,,
-function,Py_SetProgramName,3.2,,
-function,Py_SetPythonHome,3.2,,
 function,Py_SetRecursionLimit,3.2,,
 type,Py_UCS4,3.2,,
 macro,Py_UNBLOCK_THREADS,3.2,,
diff --git a/Doc/distributing/index.rst b/Doc/distributing/index.rst
index d237f8f082d87b..2430564b45d6d2 100644
--- a/Doc/distributing/index.rst
+++ b/Doc/distributing/index.rst
@@ -1,174 +1,19 @@
+:orphan:
+
+.. This page is retained solely for existing links to /distributing/index.html.
+   Direct readers to the PPUG instead.
+
 .. _distributing-index:
 
 ###############################
   Distributing Python Modules
 ###############################
 
-:Email: distutils-sig@python.org
-
-
-As a popular open source development project, Python has an active
-supporting community of contributors and users that also make their software
-available for other Python developers to use under open source license terms.
-
-This allows Python users to share and collaborate effectively, benefiting
-from the solutions others have already created to common (and sometimes
-even rare!) problems, as well as potentially contributing their own
-solutions to the common pool.
-
-This guide covers the distribution part of the process. For a guide to
-installing other Python projects, refer to the
-:ref:`installation guide <installing-index>`.
-
 .. note::
 
-   For corporate and other institutional users, be aware that many
-   organisations have their own policies around using and contributing to
-   open source software. Please take such policies into account when making
-   use of the distribution and installation tools provided with Python.
-
-
-Key terms
-=========
-
-* the `Python Package Index <https://pypi.org>`__ is a public
-  repository of open source licensed packages made available for use by
-  other Python users
-* the `Python Packaging Authority
-  <https://www.pypa.io/>`__ are the group of
-  developers and documentation authors responsible for the maintenance and
-  evolution of the standard packaging tools and the associated metadata and
-  file format standards. They maintain a variety of tools, documentation
-  and issue trackers on `GitHub <https://github.com/pypa>`__.
-* ``distutils`` is the original build and distribution system first added
-  to the Python standard library in 1998. While direct use of ``distutils``
-  is being phased out, it still laid the foundation for the current packaging
-  and distribution infrastructure, and it not only remains part of the
-  standard library, but its name lives on in other ways (such as the name
-  of the mailing list used to coordinate Python packaging standards
-  development).
-* `setuptools`_ is a (largely) drop-in replacement for ``distutils`` first
-  published in 2004. Its most notable addition over the unmodified
-  ``distutils`` tools was the ability to declare dependencies on other
-  packages. It is currently recommended as a more regularly updated
-  alternative to ``distutils`` that offers consistent support for more
-  recent packaging standards across a wide range of Python versions.
-* `wheel`_ (in this context) is a project that adds the ``bdist_wheel``
-  command to ``distutils``/`setuptools`_. This produces a cross platform
-  binary packaging format (called "wheels" or "wheel files" and defined in
-  :pep:`427`) that allows Python libraries, even those including binary
-  extensions, to be installed on a system without needing to be built
-  locally.
-
-.. _setuptools: https://setuptools.readthedocs.io/en/latest/
-.. _wheel: https://wheel.readthedocs.io/
-
-Open source licensing and collaboration
-=======================================
-
-In most parts of the world, software is automatically covered by copyright.
-This means that other developers require explicit permission to copy, use,
-modify and redistribute the software.
-
-Open source licensing is a way of explicitly granting such permission in a
-relatively consistent way, allowing developers to share and collaborate
-efficiently by making common solutions to various problems freely available.
-This leaves many developers free to spend more time focusing on the problems
-that are relatively unique to their specific situation.
-
-The distribution tools provided with Python are designed to make it
-reasonably straightforward for developers to make their own contributions
-back to that common pool of software if they choose to do so.
-
-The same distribution tools can also be used to distribute software within
-an organisation, regardless of whether that software is published as open
-source software or not.
-
-
-Installing the tools
-====================
-
-The standard library does not include build tools that support modern
-Python packaging standards, as the core development team has found that it
-is important to have standard tools that work consistently, even on older
-versions of Python.
-
-The currently recommended build and distribution tools can be installed
-by invoking the ``pip`` module at the command line::
-
-    python -m pip install setuptools wheel twine
-
-.. note::
-
-   For POSIX users (including macOS and Linux users), these instructions
-   assume the use of a :term:`virtual environment`.
-
-   For Windows users, these instructions assume that the option to
-   adjust the system PATH environment variable was selected when installing
-   Python.
-
-The Python Packaging User Guide includes more details on the `currently
-recommended tools`_.
-
-.. _currently recommended tools: https://packaging.python.org/guides/tool-recommendations/#packaging-tool-recommendations
-
-.. index::
-   single: Python Package Index (PyPI)
-   single: PyPI; (see Python Package Index (PyPI))
-
-.. _publishing-python-packages:
-
-Reading the Python Packaging User Guide
-=======================================
-
-The Python Packaging User Guide covers the various key steps and elements
-involved in creating and publishing a project:
-
-* `Project structure`_
-* `Building and packaging the project`_
-* `Uploading the project to the Python Package Index`_
-* `The .pypirc file`_
-
-.. _Project structure: https://packaging.python.org/tutorials/packaging-projects/#packaging-python-projects
-.. _Building and packaging the project: https://packaging.python.org/tutorials/packaging-projects/#creating-the-package-files
-.. _Uploading the project to the Python Package Index: https://packaging.python.org/tutorials/packaging-projects/#uploading-the-distribution-archives
-.. _The .pypirc file: https://packaging.python.org/specifications/pypirc/
-
-
-How do I...?
-============
-
-These are quick answers or links for some common tasks.
-
-... choose a name for my project?
----------------------------------
-
-This isn't an easy topic, but here are a few tips:
-
-* check the Python Package Index to see if the name is already in use
-* check popular hosting sites like GitHub, Bitbucket, etc to see if there
-  is already a project with that name
-* check what comes up in a web search for the name you're considering
-* avoid particularly common words, especially ones with multiple meanings,
-  as they can make it difficult for users to find your software when
-  searching for it
-
-
-... create and distribute binary extensions?
---------------------------------------------
-
-This is actually quite a complex topic, with a variety of alternatives
-available depending on exactly what you're aiming to achieve. See the
-Python Packaging User Guide for more information and recommendations.
-
-.. seealso::
-
-   `Python Packaging User Guide: Binary Extensions
-   <https://packaging.python.org/guides/packaging-binary-extensions/>`__
-
-.. other topics:
+   Information and guidance on distributing Python modules and packages
+   has been moved to the `Python Packaging User Guide`_,
+   and the tutorial on `packaging Python projects`_.
 
-   Once the Development & Deployment part of PPUG is fleshed out, some of
-   those sections should be linked from new questions here (most notably,
-   we should have a question about avoiding depending on PyPI that links to
-   https://packaging.python.org/en/latest/mirrors/)
+   .. _Python Packaging User Guide: https://packaging.python.org/
+   .. _packaging Python projects: https://packaging.python.org/en/latest/tutorials/packaging-projects/
diff --git a/Doc/extending/building.rst b/Doc/extending/building.rst
index 880bb33ee56718..ddde567f6f3efa 100644
--- a/Doc/extending/building.rst
+++ b/Doc/extending/building.rst
@@ -45,6 +45,7 @@ See the *"Multiple modules in one library"* section in :pep:`489` for details.
 
 .. highlight:: c
 
+.. _install-index:
 .. _setuptools-index:
 
 Building C and C++ Extensions with setuptools
diff --git a/Doc/extending/embedding.rst b/Doc/extending/embedding.rst
index e64db373344038..20397dc5add5db 100644
--- a/Doc/extending/embedding.rst
+++ b/Doc/extending/embedding.rst
@@ -59,24 +59,43 @@ perform some operation on a file. ::
    int
    main(int argc, char *argv[])
    {
-       wchar_t *program = Py_DecodeLocale(argv[0], NULL);
-       if (program == NULL) {
-           fprintf(stderr, "Fatal error: cannot decode argv[0]\n");
-           exit(1);
+       PyStatus status;
+       PyConfig config;
+       PyConfig_InitPythonConfig(&config);
+
+       /* optional but recommended */
+       status = PyConfig_SetBytesString(&config, &config.program_name, argv[0]);
+       if (PyStatus_Exception(status)) {
+           goto exception;
        }
-       Py_SetProgramName(program);  /* optional but recommended */
-       Py_Initialize();
+
+       status = Py_InitializeFromConfig(&config);
+       if (PyStatus_Exception(status)) {
+           goto exception;
+       }
+       PyConfig_Clear(&config);
+
        PyRun_SimpleString("from time import time,ctime\n"
                           "print('Today is', ctime(time()))\n");
        if (Py_FinalizeEx() < 0) {
            exit(120);
        }
-       PyMem_RawFree(program);
        return 0;
+
+     exception:
+        PyConfig_Clear(&config);
+        Py_ExitStatusException(status);
    }
 
-The :c:func:`Py_SetProgramName` function should be called before
-:c:func:`Py_Initialize` to inform the interpreter about paths to Python run-time
+.. note::
+
+   ``#define PY_SSIZE_T_CLEAN`` was used to indicate that ``Py_ssize_t`` should be
+   used in some APIs instead of ``int``.
+   It is not necessary since Python 3.13, but we keep it here for backward compatibility.
+   See :ref:`arg-parsing-string-and-buffers` for a description of this macro.
+
+Setting :c:member:`PyConfig.program_name` should be called before
+:c:func:`Py_InitializeFromConfig` to inform the interpreter about paths to Python run-time
 libraries.  Next, the Python interpreter is initialized with
 :c:func:`Py_Initialize`, followed by the execution of a hard-coded Python script
 that prints the date and time.  Afterwards, the :c:func:`Py_FinalizeEx` call shuts
@@ -250,7 +269,7 @@ following two statements before the call to :c:func:`Py_Initialize`::
    PyImport_AppendInittab("emb", &PyInit_emb);
 
 These two lines initialize the ``numargs`` variable, and make the
-:func:`emb.numargs` function accessible to the embedded Python interpreter.
+:func:`!emb.numargs` function accessible to the embedded Python interpreter.
 With these extensions, the Python script can do things like
 
 .. code-block:: python
diff --git a/Doc/extending/extending.rst b/Doc/extending/extending.rst
index d9bf4fd6c7ae0e..745fc10a22d161 100644
--- a/Doc/extending/extending.rst
+++ b/Doc/extending/extending.rst
@@ -69,8 +69,10 @@ the module and a copyright notice if you like).
    headers on some systems, you *must* include :file:`Python.h` before any standard
    headers are included.
 
-   It is recommended to always define ``PY_SSIZE_T_CLEAN`` before including
-   ``Python.h``.  See :ref:`parsetuple` for a description of this macro.
+   ``#define PY_SSIZE_T_CLEAN`` was used to indicate that ``Py_ssize_t`` should be
+   used in some APIs instead of ``int``.
+   It is not necessary since Python 3.13, but we keep it here for backward compatibility.
+   See :ref:`arg-parsing-string-and-buffers` for a description of this macro.
 
 All user-visible symbols defined by :file:`Python.h` have a prefix of ``Py`` or
 ``PY``, except those defined in standard header files. For convenience, and
@@ -195,7 +197,7 @@ The choice of which exception to raise is entirely yours.  There are predeclared
 C objects corresponding to all built-in Python exceptions, such as
 :c:data:`PyExc_ZeroDivisionError`, which you can use directly. Of course, you
 should choose exceptions wisely --- don't use :c:data:`PyExc_TypeError` to mean
-that a file couldn't be opened (that should probably be :c:data:`PyExc_IOError`).
+that a file couldn't be opened (that should probably be :c:data:`PyExc_OSError`).
 If something's wrong with the argument list, the :c:func:`PyArg_ParseTuple`
 function usually raises :c:data:`PyExc_TypeError`.  If you have an argument whose
 value must be in a particular range or must satisfy other conditions,
@@ -206,7 +208,7 @@ usually declare a static object variable at the beginning of your file::
 
    static PyObject *SpamError;
 
-and initialize it in your module's initialization function (:c:func:`PyInit_spam`)
+and initialize it in your module's initialization function (:c:func:`!PyInit_spam`)
 with an exception object::
 
    PyMODINIT_FUNC
@@ -219,9 +221,7 @@ with an exception object::
            return NULL;
 
        SpamError = PyErr_NewException("spam.error", NULL, NULL);
-       Py_XINCREF(SpamError);
-       if (PyModule_AddObject(m, "error", SpamError) < 0) {
-           Py_XDECREF(SpamError);
+       if (PyModule_AddObjectRef(m, "error", SpamError) < 0) {
            Py_CLEAR(SpamError);
            Py_DECREF(m);
            return NULL;
@@ -230,22 +230,22 @@ with an exception object::
        return m;
    }
 
-Note that the Python name for the exception object is :exc:`spam.error`.  The
+Note that the Python name for the exception object is :exc:`!spam.error`.  The
 :c:func:`PyErr_NewException` function may create a class with the base class
 being :exc:`Exception` (unless another class is passed in instead of ``NULL``),
 described in :ref:`bltin-exceptions`.
 
-Note also that the :c:data:`SpamError` variable retains a reference to the newly
+Note also that the :c:data:`!SpamError` variable retains a reference to the newly
 created exception class; this is intentional!  Since the exception could be
 removed from the module by external code, an owned reference to the class is
-needed to ensure that it will not be discarded, causing :c:data:`SpamError` to
+needed to ensure that it will not be discarded, causing :c:data:`!SpamError` to
 become a dangling pointer. Should it become a dangling pointer, C code which
 raises the exception could cause a core dump or other unintended side effects.
 
-We discuss the use of ``PyMODINIT_FUNC`` as a function return type later in this
+We discuss the use of :c:macro:`PyMODINIT_FUNC` as a function return type later in this
 sample.
 
-The :exc:`spam.error` exception can be raised in your extension module using a
+The :exc:`!spam.error` exception can be raised in your extension module using a
 call to :c:func:`PyErr_SetString` as shown below::
 
    static PyObject *
@@ -279,9 +279,9 @@ statement::
 It returns ``NULL`` (the error indicator for functions returning object pointers)
 if an error is detected in the argument list, relying on the exception set by
 :c:func:`PyArg_ParseTuple`.  Otherwise the string value of the argument has been
-copied to the local variable :c:data:`command`.  This is a pointer assignment and
+copied to the local variable :c:data:`!command`.  This is a pointer assignment and
 you are not supposed to modify the string to which it points (so in Standard C,
-the variable :c:data:`command` should properly be declared as ``const char
+the variable :c:data:`!command` should properly be declared as ``const char
 *command``).
 
 The next statement is a call to the Unix function :c:func:`system`, passing it
@@ -289,7 +289,7 @@ the string we just got from :c:func:`PyArg_ParseTuple`::
 
    sts = system(command);
 
-Our :func:`spam.system` function must return the value of :c:data:`sts` as a
+Our :func:`!spam.system` function must return the value of :c:data:`!sts` as a
 Python object.  This is done using the function :c:func:`PyLong_FromLong`. ::
 
    return PyLong_FromLong(sts);
@@ -315,7 +315,7 @@ contexts, as we have seen.
 The Module's Method Table and Initialization Function
 =====================================================
 
-I promised to show how :c:func:`spam_system` is called from Python programs.
+I promised to show how :c:func:`!spam_system` is called from Python programs.
 First, we need to list its name and address in a "method table"::
 
    static PyMethodDef SpamMethods[] = {
@@ -335,7 +335,7 @@ When using only ``METH_VARARGS``, the function should expect the Python-level
 parameters to be passed in as a tuple acceptable for parsing via
 :c:func:`PyArg_ParseTuple`; more information on this function is provided below.
 
-The :const:`METH_KEYWORDS` bit may be set in the third field if keyword
+The :c:macro:`METH_KEYWORDS` bit may be set in the third field if keyword
 arguments should be passed to the function.  In this case, the C function should
 accept a third ``PyObject *`` parameter which will be a dictionary of keywords.
 Use :c:func:`PyArg_ParseTupleAndKeywords` to parse the arguments to such a
@@ -354,7 +354,7 @@ The method table must be referenced in the module definition structure::
 
 This structure, in turn, must be passed to the interpreter in the module's
 initialization function.  The initialization function must be named
-:c:func:`PyInit_name`, where *name* is the name of the module, and should be the
+:c:func:`!PyInit_name`, where *name* is the name of the module, and should be the
 only non-\ ``static`` item defined in the module file::
 
    PyMODINIT_FUNC
@@ -363,12 +363,12 @@ only non-\ ``static`` item defined in the module file::
        return PyModule_Create(&spammodule);
    }
 
-Note that PyMODINIT_FUNC declares the function as ``PyObject *`` return type,
+Note that :c:macro:`PyMODINIT_FUNC` declares the function as ``PyObject *`` return type,
 declares any special linkage declarations required by the platform, and for C++
 declares the function as ``extern "C"``.
 
-When the Python program imports module :mod:`spam` for the first time,
-:c:func:`PyInit_spam` is called. (See below for comments about embedding Python.)
+When the Python program imports module :mod:`!spam` for the first time,
+:c:func:`!PyInit_spam` is called. (See below for comments about embedding Python.)
 It calls :c:func:`PyModule_Create`, which returns a module object, and
 inserts built-in function objects into the newly created module based upon the
 table (an array of :c:type:`PyMethodDef` structures) found in the module definition.
@@ -378,19 +378,20 @@ certain errors, or return ``NULL`` if the module could not be initialized
 satisfactorily. The init function must return the module object to its caller,
 so that it then gets inserted into ``sys.modules``.
 
-When embedding Python, the :c:func:`PyInit_spam` function is not called
+When embedding Python, the :c:func:`!PyInit_spam` function is not called
 automatically unless there's an entry in the :c:data:`PyImport_Inittab` table.
 To add the module to the initialization table, use :c:func:`PyImport_AppendInittab`,
 optionally followed by an import of the module::
 
+   #define PY_SSIZE_T_CLEAN
+   #include <Python.h>
+
    int
    main(int argc, char *argv[])
    {
-       wchar_t *program = Py_DecodeLocale(argv[0], NULL);
-       if (program == NULL) {
-           fprintf(stderr, "Fatal error: cannot decode argv[0]\n");
-           exit(1);
-       }
+       PyStatus status;
+       PyConfig config;
+       PyConfig_InitPythonConfig(&config);
 
        /* Add a built-in module, before Py_Initialize */
        if (PyImport_AppendInittab("spam", PyInit_spam) == -1) {
@@ -399,11 +400,18 @@ optionally followed by an import of the module::
        }
 
        /* Pass argv[0] to the Python interpreter */
-       Py_SetProgramName(program);
+       status = PyConfig_SetBytesString(&config, &config.program_name, argv[0]);
+       if (PyStatus_Exception(status)) {
+           goto exception;
+       }
 
        /* Initialize the Python interpreter.  Required.
           If this step fails, it will be a fatal error. */
-       Py_Initialize();
+       status = Py_InitializeFromConfig(&config);
+       if (PyStatus_Exception(status)) {
+           goto exception;
+       }
+       PyConfig_Clear(&config);
 
        /* Optionally import the module; alternatively,
           import can be deferred until the embedded script
@@ -414,10 +422,13 @@ optionally followed by an import of the module::
            fprintf(stderr, "Error: could not import module 'spam'\n");
        }
 
-       ...
+       // ... use Python C API here ...
 
-       PyMem_RawFree(program);
        return 0;
+
+     exception:
+        PyConfig_Clear(&config);
+        Py_ExitStatusException(status);
    }
 
 .. note::
@@ -527,7 +538,7 @@ be part of a module definition::
    }
 
 This function must be registered with the interpreter using the
-:const:`METH_VARARGS` flag; this is described in section :ref:`methodtable`.  The
+:c:macro:`METH_VARARGS` flag; this is described in section :ref:`methodtable`.  The
 :c:func:`PyArg_ParseTuple` function and its arguments are documented in section
 :ref:`parsetuple`.
 
@@ -649,7 +660,7 @@ Note that any Python object references which are provided to the caller are
 
 Some example calls::
 
-   #define PY_SSIZE_T_CLEAN  /* Make "s#" use Py_ssize_t rather than int. */
+   #define PY_SSIZE_T_CLEAN
    #include <Python.h>
 
 ::
@@ -724,7 +735,7 @@ Keyword Parameters for Extension Functions
 The :c:func:`PyArg_ParseTupleAndKeywords` function is declared as follows::
 
    int PyArg_ParseTupleAndKeywords(PyObject *arg, PyObject *kwdict,
-                                   const char *format, char *kwlist[], ...);
+                                   const char *format, char * const *kwlist, ...);
 
 The *arg* and *format* parameters are identical to those of the
 :c:func:`PyArg_ParseTuple` function.  The *kwdict* parameter is the dictionary of
@@ -745,7 +756,7 @@ it returns false and raises an appropriate exception.
 Here is an example module which uses keywords, based on an example by Geoff
 Philbrick (philbrick@hks.com)::
 
-   #define PY_SSIZE_T_CLEAN  /* Make "s#" use Py_ssize_t rather than int. */
+   #define PY_SSIZE_T_CLEAN
    #include <Python.h>
 
    static PyObject *
@@ -1030,13 +1041,13 @@ Let's follow the control flow into :c:func:`PyList_SetItem`.  The list owns
 references to all its items, so when item 1 is replaced, it has to dispose of
 the original item 1.  Now let's suppose the original item 1 was an instance of a
 user-defined class, and let's further suppose that the class defined a
-:meth:`__del__` method.  If this class instance has a reference count of 1,
-disposing of it will call its :meth:`__del__` method.
+:meth:`!__del__` method.  If this class instance has a reference count of 1,
+disposing of it will call its :meth:`!__del__` method.
 
-Since it is written in Python, the :meth:`__del__` method can execute arbitrary
+Since it is written in Python, the :meth:`!__del__` method can execute arbitrary
 Python code.  Could it perhaps do something to invalidate the reference to
-``item`` in :c:func:`bug`?  You bet!  Assuming that the list passed into
-:c:func:`bug` is accessible to the :meth:`__del__` method, it could execute a
+``item`` in :c:func:`!bug`?  You bet!  Assuming that the list passed into
+:c:func:`!bug` is accessible to the :meth:`!__del__` method, it could execute a
 statement to the effect of ``del list[0]``, and assuming this was the last
 reference to that object, it would free the memory associated with it, thereby
 invalidating ``item``.
@@ -1057,7 +1068,7 @@ increment the reference count.  The correct version of the function reads::
 
 This is a true story.  An older version of Python contained variants of this bug
 and someone spent a considerable amount of time in a C debugger to figure out
-why his :meth:`__del__` methods would fail...
+why his :meth:`!__del__` methods would fail...
 
 The second case of problems with a borrowed reference is a variant involving
 threads.  Normally, multiple threads in the Python interpreter can't get in each
@@ -1208,14 +1219,14 @@ file corresponding to the module provides a macro that takes care of importing
 the module and retrieving its C API pointers; client modules only have to call
 this macro before accessing the C API.
 
-The exporting module is a modification of the :mod:`spam` module from section
-:ref:`extending-simpleexample`. The function :func:`spam.system` does not call
+The exporting module is a modification of the :mod:`!spam` module from section
+:ref:`extending-simpleexample`. The function :func:`!spam.system` does not call
 the C library function :c:func:`system` directly, but a function
-:c:func:`PySpam_System`, which would of course do something more complicated in
+:c:func:`!PySpam_System`, which would of course do something more complicated in
 reality (such as adding "spam" to every command). This function
-:c:func:`PySpam_System` is also exported to other extension modules.
+:c:func:`!PySpam_System` is also exported to other extension modules.
 
-The function :c:func:`PySpam_System` is a plain C function, declared
+The function :c:func:`!PySpam_System` is a plain C function, declared
 ``static`` like everything else::
 
    static int
@@ -1224,7 +1235,7 @@ The function :c:func:`PySpam_System` is a plain C function, declared
        return system(command);
    }
 
-The function :c:func:`spam_system` is modified in a trivial way::
+The function :c:func:`!spam_system` is modified in a trivial way::
 
    static PyObject *
    spam_system(PyObject *self, PyObject *args)
@@ -1268,8 +1279,7 @@ function must take care of initializing the C API pointer array::
        /* Create a Capsule containing the API pointer array's address */
        c_api_object = PyCapsule_New((void *)PySpam_API, "spam._C_API", NULL);
 
-       if (PyModule_AddObject(m, "_C_API", c_api_object) < 0) {
-           Py_XDECREF(c_api_object);
+       if (PyModule_Add(m, "_C_API", c_api_object) < 0) {
            Py_DECREF(m);
            return NULL;
        }
@@ -1278,7 +1288,7 @@ function must take care of initializing the C API pointer array::
    }
 
 Note that ``PySpam_API`` is declared ``static``; otherwise the pointer
-array would disappear when :func:`PyInit_spam` terminates!
+array would disappear when :c:func:`!PyInit_spam` terminates!
 
 The bulk of the work is in the header file :file:`spammodule.h`, which looks
 like this::
@@ -1332,8 +1342,8 @@ like this::
    #endif /* !defined(Py_SPAMMODULE_H) */
 
 All that a client module must do in order to have access to the function
-:c:func:`PySpam_System` is to call the function (or rather macro)
-:c:func:`import_spam` in its initialization function::
+:c:func:`!PySpam_System` is to call the function (or rather macro)
+:c:func:`!import_spam` in its initialization function::
 
    PyMODINIT_FUNC
    PyInit_client(void)
diff --git a/Doc/extending/newtypes.rst b/Doc/extending/newtypes.rst
index 6852a385f0c63c..7a92b3257c6cd3 100644
--- a/Doc/extending/newtypes.rst
+++ b/Doc/extending/newtypes.rst
@@ -168,7 +168,7 @@ representation of the instance for which it is called.  Here is a simple
 example::
 
    static PyObject *
-   newdatatype_repr(newdatatypeobject * obj)
+   newdatatype_repr(newdatatypeobject *obj)
    {
        return PyUnicode_FromFormat("Repr-ified_newdatatype{{size:%d}}",
                                    obj->obj_UnderlyingDatatypePtr->size);
@@ -188,7 +188,7 @@ used instead.
 Here is a simple example::
 
    static PyObject *
-   newdatatype_str(newdatatypeobject * obj)
+   newdatatype_str(newdatatypeobject *obj)
    {
        return PyUnicode_FromFormat("Stringified_newdatatype{{size:%d}}",
                                    obj->obj_UnderlyingDatatypePtr->size);
@@ -270,7 +270,7 @@ structure::
 One entry should be defined for each method provided by the type; no entries are
 needed for methods inherited from a base type.  One additional entry is needed
 at the end; it is a sentinel that marks the end of the array.  The
-:attr:`ml_name` field of the sentinel must be ``NULL``.
+:c:member:`~PyMethodDef.ml_name` field of the sentinel must be ``NULL``.
 
 The second table is used to define attributes which map directly to data stored
 in the instance.  A variety of primitive C types are supported, and access may
@@ -286,9 +286,9 @@ be read-only or read-write.  The structures in the table are defined as::
 
 For each entry in the table, a :term:`descriptor` will be constructed and added to the
 type which will be able to extract a value from the instance structure.  The
-:attr:`type` field should contain a type code like :c:macro:`Py_T_INT` or
+:c:member:`~PyMemberDef.type` field should contain a type code like :c:macro:`Py_T_INT` or
 :c:macro:`Py_T_DOUBLE`; the value will be used to determine how to
-convert Python values to and from C values.  The :attr:`flags` field is used to
+convert Python values to and from C values.  The :c:member:`~PyMemberDef.flags` field is used to
 store flags which control how the attribute can be accessed: you can set it to
 :c:macro:`Py_READONLY` to prevent Python code from setting it.
 
@@ -296,9 +296,9 @@ An interesting advantage of using the :c:member:`~PyTypeObject.tp_members` table
 descriptors that are used at runtime is that any attribute defined this way can
 have an associated doc string simply by providing the text in the table.  An
 application can use the introspection API to retrieve the descriptor from the
-class object, and get the doc string using its :attr:`__doc__` attribute.
+class object, and get the doc string using its :attr:`!__doc__` attribute.
 
-As with the :c:member:`~PyTypeObject.tp_methods` table, a sentinel entry with a :attr:`name` value
+As with the :c:member:`~PyTypeObject.tp_methods` table, a sentinel entry with a :c:member:`~PyMethodDef.ml_name` value
 of ``NULL`` is required.
 
 .. XXX Descriptors need to be explained in more detail somewhere, but not here.
@@ -323,7 +323,7 @@ called, so that if you do need to extend their functionality, you'll understand
 what needs to be done.
 
 The :c:member:`~PyTypeObject.tp_getattr` handler is called when the object requires an attribute
-look-up.  It is called in the same situations where the :meth:`__getattr__`
+look-up.  It is called in the same situations where the :meth:`~object.__getattr__`
 method of a class would be called.
 
 Here is an example::
@@ -338,12 +338,12 @@ Here is an example::
 
        PyErr_Format(PyExc_AttributeError,
                     "'%.100s' object has no attribute '%.400s'",
-                    tp->tp_name, name);
+                    Py_TYPE(obj)->tp_name, name);
        return NULL;
    }
 
-The :c:member:`~PyTypeObject.tp_setattr` handler is called when the :meth:`__setattr__` or
-:meth:`__delattr__` method of a class instance would be called.  When an
+The :c:member:`~PyTypeObject.tp_setattr` handler is called when the :meth:`~object.__setattr__` or
+:meth:`~object.__delattr__` method of a class instance would be called.  When an
 attribute should be deleted, the third parameter will be ``NULL``.  Here is an
 example that simply raises an exception; if this were really all you wanted, the
 :c:member:`~PyTypeObject.tp_setattr` handler should be set to ``NULL``. ::
@@ -364,7 +364,7 @@ Object Comparison
 
 The :c:member:`~PyTypeObject.tp_richcompare` handler is called when comparisons are needed.  It is
 analogous to the :ref:`rich comparison methods <richcmpfuncs>`, like
-:meth:`__lt__`, and also called by :c:func:`PyObject_RichCompare` and
+:meth:`!__lt__`, and also called by :c:func:`PyObject_RichCompare` and
 :c:func:`PyObject_RichCompareBool`.
 
 This function is called with two Python objects and the operator as arguments,
@@ -379,7 +379,7 @@ Here is a sample implementation, for a datatype that is considered equal if the
 size of an internal pointer is equal::
 
    static PyObject *
-   newdatatype_richcmp(PyObject *obj1, PyObject *obj2, int op)
+   newdatatype_richcmp(newdatatypeobject *obj1, newdatatypeobject *obj2, int op)
    {
        PyObject *result;
        int c, size1, size2;
@@ -478,7 +478,7 @@ This function takes three arguments:
 Here is a toy ``tp_call`` implementation::
 
    static PyObject *
-   newdatatype_call(newdatatypeobject *self, PyObject *args, PyObject *kwds)
+   newdatatype_call(newdatatypeobject *obj, PyObject *args, PyObject *kwds)
    {
        PyObject *result;
        const char *arg1;
@@ -505,7 +505,7 @@ These functions provide support for the iterator protocol.  Both handlers
 take exactly one parameter, the instance for which they are being called,
 and return a new reference.  In the case of an error, they should set an
 exception and return ``NULL``.  :c:member:`~PyTypeObject.tp_iter` corresponds
-to the Python :meth:`__iter__` method, while :c:member:`~PyTypeObject.tp_iternext`
+to the Python :meth:`~object.__iter__` method, while :c:member:`~PyTypeObject.tp_iternext`
 corresponds to the Python :meth:`~iterator.__next__` method.
 
 Any :term:`iterable` object must implement the :c:member:`~PyTypeObject.tp_iter`
diff --git a/Doc/extending/newtypes_tutorial.rst b/Doc/extending/newtypes_tutorial.rst
index f89934a11f12a8..7eba9759119b3b 100644
--- a/Doc/extending/newtypes_tutorial.rst
+++ b/Doc/extending/newtypes_tutorial.rst
@@ -36,8 +36,8 @@ So, if you want to define a new extension type, you need to create a new type
 object.
 
 This sort of thing can only be explained by example, so here's a minimal, but
-complete, module that defines a new type named :class:`Custom` inside a C
-extension module :mod:`custom`:
+complete, module that defines a new type named :class:`!Custom` inside a C
+extension module :mod:`!custom`:
 
 .. note::
    What we're showing here is the traditional way of defining *static*
@@ -45,17 +45,17 @@ extension module :mod:`custom`:
    allows defining heap-allocated extension types using the
    :c:func:`PyType_FromSpec` function, which isn't covered in this tutorial.
 
-.. literalinclude:: ../includes/custom.c
+.. literalinclude:: ../includes/newtypes/custom.c
 
 Now that's quite a bit to take in at once, but hopefully bits will seem familiar
 from the previous chapter.  This file defines three things:
 
-#. What a :class:`Custom` **object** contains: this is the ``CustomObject``
-   struct, which is allocated once for each :class:`Custom` instance.
-#. How the :class:`Custom` **type** behaves: this is the ``CustomType`` struct,
+#. What a :class:`!Custom` **object** contains: this is the ``CustomObject``
+   struct, which is allocated once for each :class:`!Custom` instance.
+#. How the :class:`!Custom` **type** behaves: this is the ``CustomType`` struct,
    which defines a set of flags and function pointers that the interpreter
    inspects when specific operations are requested.
-#. How to initialize the :mod:`custom` module: this is the ``PyInit_custom``
+#. How to initialize the :mod:`!custom` module: this is the ``PyInit_custom``
    function and the associated ``custommodule`` struct.
 
 The first bit is::
@@ -127,8 +127,8 @@ our objects and in some error messages, for example:
    TypeError: can only concatenate str (not "custom.Custom") to str
 
 Note that the name is a dotted name that includes both the module name and the
-name of the type within the module. The module in this case is :mod:`custom` and
-the type is :class:`Custom`, so we set the type name to :class:`custom.Custom`.
+name of the type within the module. The module in this case is :mod:`!custom` and
+the type is :class:`!Custom`, so we set the type name to :class:`!custom.Custom`.
 Using the real dotted import path is important to make your type compatible
 with the :mod:`pydoc` and :mod:`pickle` modules. ::
 
@@ -136,7 +136,7 @@ with the :mod:`pydoc` and :mod:`pickle` modules. ::
    .tp_itemsize = 0,
 
 This is so that Python knows how much memory to allocate when creating
-new :class:`Custom` instances.  :c:member:`~PyTypeObject.tp_itemsize` is
+new :class:`!Custom` instances.  :c:member:`~PyTypeObject.tp_itemsize` is
 only used for variable-sized objects and should otherwise be zero.
 
 .. note::
@@ -145,13 +145,13 @@ only used for variable-sized objects and should otherwise be zero.
    :c:member:`~PyTypeObject.tp_basicsize` as its base type, you may have problems with multiple
    inheritance.  A Python subclass of your type will have to list your type first
    in its :attr:`~class.__bases__`, or else it will not be able to call your type's
-   :meth:`__new__` method without getting an error.  You can avoid this problem by
+   :meth:`~object.__new__` method without getting an error.  You can avoid this problem by
    ensuring that your type has a larger value for :c:member:`~PyTypeObject.tp_basicsize` than its
    base type does.  Most of the time, this will be true anyway, because either your
    base type will be :class:`object`, or else you will be adding data members to
    your base type, and therefore increasing its size.
 
-We set the class flags to :const:`Py_TPFLAGS_DEFAULT`. ::
+We set the class flags to :c:macro:`Py_TPFLAGS_DEFAULT`. ::
 
    .tp_flags = Py_TPFLAGS_DEFAULT,
 
@@ -164,31 +164,29 @@ We provide a doc string for the type in :c:member:`~PyTypeObject.tp_doc`. ::
    .tp_doc = PyDoc_STR("Custom objects"),
 
 To enable object creation, we have to provide a :c:member:`~PyTypeObject.tp_new`
-handler.  This is the equivalent of the Python method :meth:`__new__`, but
+handler.  This is the equivalent of the Python method :meth:`~object.__new__`, but
 has to be specified explicitly.  In this case, we can just use the default
 implementation provided by the API function :c:func:`PyType_GenericNew`. ::
 
    .tp_new = PyType_GenericNew,
 
 Everything else in the file should be familiar, except for some code in
-:c:func:`PyInit_custom`::
+:c:func:`!PyInit_custom`::
 
    if (PyType_Ready(&CustomType) < 0)
        return;
 
-This initializes the :class:`Custom` type, filling in a number of members
-to the appropriate default values, including :attr:`ob_type` that we initially
+This initializes the :class:`!Custom` type, filling in a number of members
+to the appropriate default values, including :c:member:`~PyObject.ob_type` that we initially
 set to ``NULL``. ::
 
-   Py_INCREF(&CustomType);
-   if (PyModule_AddObject(m, "Custom", (PyObject *) &CustomType) < 0) {
-       Py_DECREF(&CustomType);
+   if (PyModule_AddObjectRef(m, "Custom", (PyObject *) &CustomType) < 0) {
        Py_DECREF(m);
        return NULL;
    }
 
 This adds the type to the module dictionary.  This allows us to create
-:class:`Custom` instances by calling the :class:`Custom` class:
+:class:`!Custom` instances by calling the :class:`!Custom` class:
 
 .. code-block:: pycon
 
@@ -196,50 +194,46 @@ This adds the type to the module dictionary.  This allows us to create
    >>> mycustom = custom.Custom()
 
 That's it!  All that remains is to build it; put the above code in a file called
-:file:`custom.c` and:
+:file:`custom.c`,
+
+.. literalinclude:: ../includes/newtypes/pyproject.toml
+
+in a file called :file:`pyproject.toml`, and
 
 .. code-block:: python
 
-   from distutils.core import setup, Extension
-   setup(name="custom", version="1.0",
-         ext_modules=[Extension("custom", ["custom.c"])])
+   from setuptools import Extension, setup
+   setup(ext_modules=[Extension("custom", ["custom.c"])])
 
 in a file called :file:`setup.py`; then typing
 
 .. code-block:: shell-session
 
-   $ python setup.py build
+   $ python -m pip install .
 
-at a shell should produce a file :file:`custom.so` in a subdirectory; move to
-that directory and fire up Python --- you should be able to ``import custom`` and
-play around with Custom objects.
+in a shell should produce a file :file:`custom.so` in a subdirectory
+and install it; now fire up Python --- you should be able to ``import custom``
+and play around with ``Custom`` objects.
 
 That wasn't so hard, was it?
 
 Of course, the current Custom type is pretty uninteresting. It has no data and
 doesn't do anything. It can't even be subclassed.
 
-.. note::
-   While this documentation showcases the standard :mod:`distutils` module
-   for building C extensions, it is recommended in real-world use cases to
-   use the newer and better-maintained ``setuptools`` library.  Documentation
-   on how to do this is out of scope for this document and can be found in
-   the `Python Packaging User's Guide <https://packaging.python.org/tutorials/distributing-packages/>`_.
-
 
 Adding data and methods to the Basic example
 ============================================
 
 Let's extend the basic example to add some data and methods.  Let's also make
-the type usable as a base class. We'll create a new module, :mod:`custom2` that
+the type usable as a base class. We'll create a new module, :mod:`!custom2` that
 adds these capabilities:
 
-.. literalinclude:: ../includes/custom2.c
+.. literalinclude:: ../includes/newtypes/custom2.c
 
 
 This version of the module has a number of changes.
 
-The  :class:`Custom` type now has three data attributes in its C struct,
+The  :class:`!Custom` type now has three data attributes in its C struct,
 *first*, *last*, and *number*.  The *first* and *last* variables are Python
 strings containing first and last names.  The *number* attribute is a C integer.
 
@@ -272,7 +266,7 @@ This method first clears the reference counts of the two Python attributes.
 ``NULL`` (which might happen here if ``tp_new`` failed midway).  It then
 calls the :c:member:`~PyTypeObject.tp_free` member of the object's type
 (computed by ``Py_TYPE(self)``) to free the object's memory.  Note that
-the object's type might not be :class:`CustomType`, because the object may
+the object's type might not be :class:`!CustomType`, because the object may
 be an instance of a subclass.
 
 .. note::
@@ -311,10 +305,10 @@ and install it in the :c:member:`~PyTypeObject.tp_new` member::
    .tp_new = Custom_new,
 
 The ``tp_new`` handler is responsible for creating (as opposed to initializing)
-objects of the type.  It is exposed in Python as the :meth:`__new__` method.
+objects of the type.  It is exposed in Python as the :meth:`~object.__new__` method.
 It is not required to define a ``tp_new`` member, and indeed many extension
 types will simply reuse :c:func:`PyType_GenericNew` as done in the first
-version of the ``Custom`` type above.  In this case, we use the ``tp_new``
+version of the :class:`!Custom` type above.  In this case, we use the ``tp_new``
 handler to initialize the ``first`` and ``last`` attributes to non-``NULL``
 default values.
 
@@ -345,7 +339,7 @@ result against ``NULL`` before proceeding.
 
 .. note::
    If you are creating a co-operative :c:member:`~PyTypeObject.tp_new` (one
-   that calls a base type's :c:member:`~PyTypeObject.tp_new` or :meth:`__new__`),
+   that calls a base type's :c:member:`~PyTypeObject.tp_new` or :meth:`~object.__new__`),
    you must *not* try to determine what method to call using method resolution
    order at runtime.  Always statically determine what type you are going to
    call, and call its :c:member:`~PyTypeObject.tp_new` directly, or via
@@ -388,14 +382,14 @@ by filling the :c:member:`~PyTypeObject.tp_init` slot. ::
    .tp_init = (initproc) Custom_init,
 
 The :c:member:`~PyTypeObject.tp_init` slot is exposed in Python as the
-:meth:`__init__` method.  It is used to initialize an object after it's
+:meth:`~object.__init__` method.  It is used to initialize an object after it's
 created.  Initializers always accept positional and keyword arguments,
 and they should return either ``0`` on success or ``-1`` on error.
 
 Unlike the ``tp_new`` handler, there is no guarantee that ``tp_init``
 is called at all (for example, the :mod:`pickle` module by default
-doesn't call :meth:`__init__` on unpickled instances).  It can also be
-called multiple times.  Anyone can call the :meth:`__init__` method on
+doesn't call :meth:`~object.__init__` on unpickled instances).  It can also be
+called multiple times.  Anyone can call the :meth:`!__init__` method on
 our objects.  For this reason, we have to be extra careful when assigning
 the new attribute values.  We might be tempted, for example to assign the
 ``first`` member like this::
@@ -453,7 +447,7 @@ Further, the attributes can be deleted, setting the C pointers to ``NULL``.  Eve
 though we can make sure the members are initialized to non-``NULL`` values, the
 members can be set to ``NULL`` if the attributes are deleted.
 
-We define a single method, :meth:`Custom.name()`, that outputs the objects name as the
+We define a single method, :meth:`!Custom.name()`, that outputs the objects name as the
 concatenation of the first and last names. ::
 
    static PyObject *
@@ -470,8 +464,8 @@ concatenation of the first and last names. ::
        return PyUnicode_FromFormat("%S %S", self->first, self->last);
    }
 
-The method is implemented as a C function that takes a :class:`Custom` (or
-:class:`Custom` subclass) instance as the first argument.  Methods always take an
+The method is implemented as a C function that takes a :class:`!Custom` (or
+:class:`!Custom` subclass) instance as the first argument.  Methods always take an
 instance as the first argument. Methods often take positional and keyword
 arguments as well, but in this case we don't take any and don't need to accept
 a positional argument tuple or keyword argument dictionary. This method is
@@ -482,8 +476,8 @@ equivalent to the Python method:
    def name(self):
        return "%s %s" % (self.first, self.last)
 
-Note that we have to check for the possibility that our :attr:`first` and
-:attr:`last` members are ``NULL``.  This is because they can be deleted, in which
+Note that we have to check for the possibility that our :attr:`!first` and
+:attr:`!last` members are ``NULL``.  This is because they can be deleted, in which
 case they are set to ``NULL``.  It would be better to prevent deletion of these
 attributes and to restrict the attribute values to be strings.  We'll see how to
 do that in the next section.
@@ -498,7 +492,7 @@ definitions::
        {NULL}  /* Sentinel */
    };
 
-(note that we used the :const:`METH_NOARGS` flag to indicate that the method
+(note that we used the :c:macro:`METH_NOARGS` flag to indicate that the method
 is expecting no arguments other than *self*)
 
 and assign it to the :c:member:`~PyTypeObject.tp_methods` slot::
@@ -508,41 +502,45 @@ and assign it to the :c:member:`~PyTypeObject.tp_methods` slot::
 Finally, we'll make our type usable as a base class for subclassing.  We've
 written our methods carefully so far so that they don't make any assumptions
 about the type of the object being created or used, so all we need to do is
-to add the :const:`Py_TPFLAGS_BASETYPE` to our class flag definition::
+to add the :c:macro:`Py_TPFLAGS_BASETYPE` to our class flag definition::
 
    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
 
-We rename :c:func:`PyInit_custom` to :c:func:`PyInit_custom2`, update the
+We rename :c:func:`!PyInit_custom` to :c:func:`!PyInit_custom2`, update the
 module name in the :c:type:`PyModuleDef` struct, and update the full class
 name in the :c:type:`PyTypeObject` struct.
 
-Finally, we update our :file:`setup.py` file to build the new module:
+Finally, we update our :file:`setup.py` file to include the new module,
 
 .. code-block:: python
 
-   from distutils.core import setup, Extension
-   setup(name="custom", version="1.0",
-         ext_modules=[
-            Extension("custom", ["custom.c"]),
-            Extension("custom2", ["custom2.c"]),
-            ])
+   from setuptools import Extension, setup
+   setup(ext_modules=[
+       Extension("custom", ["custom.c"]),
+       Extension("custom2", ["custom2.c"]),
+   ])
+
+and then we re-install so that we can ``import custom2``:
+
+.. code-block:: shell-session
 
+   $ python -m pip install .
 
 Providing finer control over data attributes
 ============================================
 
-In this section, we'll provide finer control over how the :attr:`first` and
-:attr:`last` attributes are set in the :class:`Custom` example. In the previous
-version of our module, the instance variables :attr:`first` and :attr:`last`
+In this section, we'll provide finer control over how the :attr:`!first` and
+:attr:`!last` attributes are set in the :class:`!Custom` example. In the previous
+version of our module, the instance variables :attr:`!first` and :attr:`!last`
 could be set to non-string values or even deleted. We want to make sure that
 these attributes always contain strings.
 
-.. literalinclude:: ../includes/custom3.c
+.. literalinclude:: ../includes/newtypes/custom3.c
 
 
-To provide greater control, over the :attr:`first` and :attr:`last` attributes,
+To provide greater control, over the :attr:`!first` and :attr:`!last` attributes,
 we'll use custom getter and setter functions.  Here are the functions for
-getting and setting the :attr:`first` attribute::
+getting and setting the :attr:`!first` attribute::
 
    static PyObject *
    Custom_getfirst(CustomObject *self, void *closure)
@@ -571,13 +569,13 @@ getting and setting the :attr:`first` attribute::
        return 0;
    }
 
-The getter function is passed a :class:`Custom` object and a "closure", which is
+The getter function is passed a :class:`!Custom` object and a "closure", which is
 a void pointer.  In this case, the closure is ignored.  (The closure supports an
 advanced usage in which definition data is passed to the getter and setter. This
 could, for example, be used to allow a single set of getter and setter functions
 that decide the attribute to get or set based on data in the closure.)
 
-The setter function is passed the :class:`Custom` object, the new value, and the
+The setter function is passed the :class:`!Custom` object, the new value, and the
 closure.  The new value may be ``NULL``, in which case the attribute is being
 deleted.  In our setter, we raise an error if the attribute is deleted or if its
 new value is not a string.
@@ -666,11 +664,11 @@ still has a reference from itself. Its reference count doesn't drop to zero.
 Fortunately, Python's cyclic garbage collector will eventually figure out that
 the list is garbage and free it.
 
-In the second version of the :class:`Custom` example, we allowed any kind of
-object to be stored in the :attr:`first` or :attr:`last` attributes [#]_.
+In the second version of the :class:`!Custom` example, we allowed any kind of
+object to be stored in the :attr:`!first` or :attr:`!last` attributes [#]_.
 Besides, in the second and third versions, we allowed subclassing
-:class:`Custom`, and subclasses may add arbitrary attributes.  For any of
-those two reasons, :class:`Custom` objects can participate in cycles:
+:class:`!Custom`, and subclasses may add arbitrary attributes.  For any of
+those two reasons, :class:`!Custom` objects can participate in cycles:
 
 .. code-block:: pycon
 
@@ -680,11 +678,11 @@ those two reasons, :class:`Custom` objects can participate in cycles:
    >>> n = Derived()
    >>> n.some_attribute = n
 
-To allow a :class:`Custom` instance participating in a reference cycle to
-be properly detected and collected by the cyclic GC, our :class:`Custom` type
+To allow a :class:`!Custom` instance participating in a reference cycle to
+be properly detected and collected by the cyclic GC, our :class:`!Custom` type
 needs to fill two additional slots and to enable a flag that enables these slots:
 
-.. literalinclude:: ../includes/custom4.c
+.. literalinclude:: ../includes/newtypes/custom4.c
 
 
 First, the traversal method lets the cyclic GC know about subobjects that could
@@ -708,8 +706,8 @@ participate in cycles::
    }
 
 For each subobject that can participate in cycles, we need to call the
-:c:func:`visit` function, which is passed to the traversal method. The
-:c:func:`visit` function takes as arguments the subobject and the extra argument
+:c:func:`!visit` function, which is passed to the traversal method. The
+:c:func:`!visit` function takes as arguments the subobject and the extra argument
 *arg* passed to the traversal method.  It returns an integer value that must be
 returned if it is non-zero.
 
@@ -774,7 +772,7 @@ and ``Custom_clear``::
        Py_TYPE(self)->tp_free((PyObject *) self);
    }
 
-Finally, we add the :const:`Py_TPFLAGS_HAVE_GC` flag to the class flags::
+Finally, we add the :c:macro:`Py_TPFLAGS_HAVE_GC` flag to the class flags::
 
    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
 
@@ -791,9 +789,9 @@ types. It is easiest to inherit from the built in types, since an extension can
 easily use the :c:type:`PyTypeObject` it needs. It can be difficult to share
 these :c:type:`PyTypeObject` structures between extension modules.
 
-In this example we will create a :class:`SubList` type that inherits from the
+In this example we will create a :class:`!SubList` type that inherits from the
 built-in :class:`list` type. The new type will be completely compatible with
-regular lists, but will have an additional :meth:`increment` method that
+regular lists, but will have an additional :meth:`!increment` method that
 increases an internal counter:
 
 .. code-block:: pycon
@@ -808,10 +806,10 @@ increases an internal counter:
    >>> print(s.increment())
    2
 
-.. literalinclude:: ../includes/sublist.c
+.. literalinclude:: ../includes/newtypes/sublist.c
 
 
-As you can see, the source code closely resembles the :class:`Custom` examples in
+As you can see, the source code closely resembles the :class:`!Custom` examples in
 previous sections. We will break down the main differences between them. ::
 
    typedef struct {
@@ -823,7 +821,7 @@ The primary difference for derived type objects is that the base type's
 object structure must be the first value.  The base type will already include
 the :c:func:`PyObject_HEAD` at the beginning of its structure.
 
-When a Python object is a :class:`SubList` instance, its ``PyObject *`` pointer
+When a Python object is a :class:`!SubList` instance, its ``PyObject *`` pointer
 can be safely cast to both ``PyListObject *`` and ``SubListObject *``::
 
    static int
@@ -835,7 +833,7 @@ can be safely cast to both ``PyListObject *`` and ``SubListObject *``::
        return 0;
    }
 
-We see above how to call through to the :attr:`__init__` method of the base
+We see above how to call through to the :meth:`~object.__init__` method of the base
 type.
 
 This pattern is important when writing a type with custom
@@ -862,9 +860,7 @@ function::
        if (m == NULL)
            return NULL;
 
-       Py_INCREF(&SubListType);
-       if (PyModule_AddObject(m, "SubList", (PyObject *) &SubListType) < 0) {
-           Py_DECREF(&SubListType);
+       if (PyModule_AddObjectRef(m, "SubList", (PyObject *) &SubListType) < 0) {
            Py_DECREF(m);
            return NULL;
        }
@@ -879,7 +875,7 @@ slot with :c:func:`PyType_GenericNew` -- the allocation function from the base
 type will be inherited.
 
 After that, calling :c:func:`PyType_Ready` and adding the type object to the
-module is the same as with the basic :class:`Custom` examples.
+module is the same as with the basic :class:`!Custom` examples.
 
 
 .. rubric:: Footnotes
diff --git a/Doc/extending/windows.rst b/Doc/extending/windows.rst
index 1129b0968bc4e6..e366d6cb9f79e3 100644
--- a/Doc/extending/windows.rst
+++ b/Doc/extending/windows.rst
@@ -132,4 +132,4 @@ modules (including Python) to be able to see your identifiers, you have to say
 Developer Studio will throw in a lot of import libraries that you do not really
 need, adding about 100K to your executable.  To get rid of them, use the Project
 Settings dialog, Link tab, to specify *ignore default libraries*.  Add the
-correct :file:`msvcrtxx.lib` to the list of libraries.
+correct :file:`msvcrt{xx}.lib` to the list of libraries.
diff --git a/Doc/faq/design.rst b/Doc/faq/design.rst
index 11d01374dc1e79..ae02c443e5938b 100644
--- a/Doc/faq/design.rst
+++ b/Doc/faq/design.rst
@@ -584,9 +584,9 @@ exhaustive test suites that exercise every line of code in a module.
 An appropriate testing discipline can help build large complex applications in
 Python as well as having interface specifications would.  In fact, it can be
 better because an interface specification cannot test certain properties of a
-program.  For example, the :meth:`list.append` method is expected to add new elements
+program.  For example, the :meth:`!list.append` method is expected to add new elements
 to the end of some internal list; an interface specification cannot test that
-your :meth:`list.append` implementation will actually do this correctly, but it's
+your :meth:`!list.append` implementation will actually do this correctly, but it's
 trivial to check this property in a test suite.
 
 Writing test suites is very helpful, and you might want to design your code to
diff --git a/Doc/faq/extending.rst b/Doc/faq/extending.rst
index bc3080f60ee237..2a8b976925d042 100644
--- a/Doc/faq/extending.rst
+++ b/Doc/faq/extending.rst
@@ -81,13 +81,13 @@ How do I extract C values from a Python object?
 
 That depends on the object's type.  If it's a tuple, :c:func:`PyTuple_Size`
 returns its length and :c:func:`PyTuple_GetItem` returns the item at a specified
-index.  Lists have similar functions, :c:func:`PyListSize` and
+index.  Lists have similar functions, :c:func:`PyList_Size` and
 :c:func:`PyList_GetItem`.
 
 For bytes, :c:func:`PyBytes_Size` returns its length and
 :c:func:`PyBytes_AsStringAndSize` provides a pointer to its value and its
 length.  Note that Python bytes objects may contain null bytes so C's
-:c:func:`strlen` should not be used.
+:c:func:`!strlen` should not be used.
 
 To test the type of an object, first make sure it isn't ``NULL``, and then use
 :c:func:`PyBytes_Check`, :c:func:`PyTuple_Check`, :c:func:`PyList_Check`, etc.
diff --git a/Doc/faq/general.rst b/Doc/faq/general.rst
index a9b2622e02ef3b..8727332594bda6 100644
--- a/Doc/faq/general.rst
+++ b/Doc/faq/general.rst
@@ -135,7 +135,7 @@ Python versions are numbered "A.B.C" or "A.B":
 
 See :pep:`6` for more information about bugfix releases.
 
-Not all releases are bugfix releases.  In the run-up to a new major release, a
+Not all releases are bugfix releases.  In the run-up to a new feature release, a
 series of development releases are made, denoted as alpha, beta, or release
 candidate.  Alphas are early releases in which interfaces aren't yet finalized;
 it's not unexpected to see an interface change between two alpha releases.
@@ -297,9 +297,9 @@ How stable is Python?
 
 Very stable.  New, stable releases have been coming out roughly every 6 to 18
 months since 1991, and this seems likely to continue.  As of version 3.9,
-Python will have a major new release every 12 months (:pep:`602`).
+Python will have a new feature release every 12 months (:pep:`602`).
 
-The developers issue "bugfix" releases of older versions, so the stability of
+The developers issue bugfix releases of older versions, so the stability of
 existing releases gradually improves.  Bugfix releases, indicated by a third
 component of the version number (e.g. 3.5.3, 3.6.2), are managed for stability;
 only fixes for known problems are included in a bugfix release, and it's
diff --git a/Doc/faq/gui.rst b/Doc/faq/gui.rst
index 023ffdf0db510a..cfa60feceb31b7 100644
--- a/Doc/faq/gui.rst
+++ b/Doc/faq/gui.rst
@@ -43,18 +43,11 @@ applications, the applications will not be truly stand-alone, as the application
 will still need the Tcl and Tk libraries.
 
 One solution is to ship the application with the Tcl and Tk libraries, and point
-to them at run-time using the :envvar:`TCL_LIBRARY` and :envvar:`TK_LIBRARY`
+to them at run-time using the :envvar:`!TCL_LIBRARY` and :envvar:`!TK_LIBRARY`
 environment variables.
 
-To get truly stand-alone applications, the Tcl scripts that form the library
-have to be integrated into the application as well. One tool supporting that is
-SAM (stand-alone modules), which is part of the Tix distribution
-(https://tix.sourceforge.net/).
-
-Build Tix with SAM enabled, perform the appropriate call to
-:c:func:`Tclsam_init`, etc. inside Python's
-:file:`Modules/tkappinit.c`, and link with libtclsam and libtksam (you
-might include the Tix libraries as well).
+Various third-party freeze libraries such as py2exe and cx_Freeze have
+handling for Tkinter applications built-in.
 
 
 Can I have Tk events handled while waiting for I/O?
@@ -62,7 +55,7 @@ Can I have Tk events handled while waiting for I/O?
 
 On platforms other than Windows, yes, and you don't even
 need threads!  But you'll have to restructure your I/O
-code a bit.  Tk has the equivalent of Xt's :c:func:`XtAddInput()` call, which allows you
+code a bit.  Tk has the equivalent of Xt's :c:func:`!XtAddInput` call, which allows you
 to register a callback function which will be called from the Tk mainloop when
 I/O is possible on a file descriptor.  See :ref:`tkinter-file-handlers`.
 
@@ -70,8 +63,9 @@ I/O is possible on a file descriptor.  See :ref:`tkinter-file-handlers`.
 I can't get key bindings to work in Tkinter: why?
 -------------------------------------------------
 
-An often-heard complaint is that event handlers bound to events with the
-:meth:`bind` method don't get handled even when the appropriate key is pressed.
+An often-heard complaint is that event handlers :ref:`bound <bindings-and-events>`
+to events with the :meth:`!bind` method
+don't get handled even when the appropriate key is pressed.
 
 The most common cause is that the widget to which the binding applies doesn't
 have "keyboard focus".  Check out the Tk documentation for the focus command.
diff --git a/Doc/faq/library.rst b/Doc/faq/library.rst
index 597caaa778e1c8..476a43d9c288f1 100644
--- a/Doc/faq/library.rst
+++ b/Doc/faq/library.rst
@@ -111,7 +111,7 @@ Is there an equivalent to C's onexit() in Python?
 -------------------------------------------------
 
 The :mod:`atexit` module provides a register function that is similar to C's
-:c:func:`onexit`.
+:c:func:`!onexit`.
 
 
 Why don't my signal handlers work?
@@ -397,7 +397,7 @@ These aren't::
    D[x] = D[x] + 1
 
 Operations that replace other objects may invoke those other objects'
-:meth:`__del__` method when their reference count reaches zero, and that can
+:meth:`~object.__del__` method when their reference count reaches zero, and that can
 affect things.  This is especially true for the mass updates to dictionaries and
 lists.  When in doubt, use a mutex!
 
@@ -566,7 +566,7 @@ use ``p.read(n)``.
    Note on a bug in popen2: unless your program calls ``wait()`` or
    ``waitpid()``, finished child processes are never removed, and eventually
    calls to popen2 will fail because of a limit on the number of child
-   processes.  Calling :func:`os.waitpid` with the :data:`os.WNOHANG` option can
+   processes.  Calling :func:`os.waitpid` with the :const:`os.WNOHANG` option can
    prevent this; a good place to insert such a call would be before calling
    ``popen2`` again.
 
@@ -669,41 +669,6 @@ and client-side web systems.
 A summary of available frameworks is maintained by Paul Boddie at
 https://wiki.python.org/moin/WebProgramming\ .
 
-Cameron Laird maintains a useful set of pages about Python web technologies at
-https://web.archive.org/web/20210224183619/http://phaseit.net/claird/comp.lang.python/web_python.
-
-
-How can I mimic CGI form submission (METHOD=POST)?
---------------------------------------------------
-
-I would like to retrieve web pages that are the result of POSTing a form. Is
-there existing code that would let me do this easily?
-
-Yes. Here's a simple example that uses :mod:`urllib.request`::
-
-   #!/usr/local/bin/python
-
-   import urllib.request
-
-   # build the query string
-   qs = "First=Josephine&MI=Q&Last=Public"
-
-   # connect and send the server a path
-   req = urllib.request.urlopen('http://www.some-server.out-there'
-                                '/cgi-bin/some-cgi-script', data=qs)
-   with req:
-       msg, hdrs = req.read(), req.info()
-
-Note that in general for percent-encoded POST operations, query strings must be
-quoted using :func:`urllib.parse.urlencode`.  For example, to send
-``name=Guy Steele, Jr.``::
-
-   >>> import urllib.parse
-   >>> urllib.parse.urlencode({'name': 'Guy Steele, Jr.'})
-   'name=Guy+Steele%2C+Jr.'
-
-.. seealso:: :ref:`urllib-howto` for extensive examples.
-
 
 What module should I use to help with generating HTML?
 ------------------------------------------------------
@@ -765,14 +730,17 @@ The :mod:`select` module is commonly used to help with asynchronous I/O on
 sockets.
 
 To prevent the TCP connect from blocking, you can set the socket to non-blocking
-mode.  Then when you do the :meth:`socket.connect`, you will either connect immediately
+mode.  Then when you do the :meth:`~socket.socket.connect`,
+you will either connect immediately
 (unlikely) or get an exception that contains the error number as ``.errno``.
 ``errno.EINPROGRESS`` indicates that the connection is in progress, but hasn't
 finished yet.  Different OSes will return different values, so you're going to
 have to check what's returned on your system.
 
-You can use the :meth:`socket.connect_ex` method to avoid creating an exception.  It will
-just return the errno value.  To poll, you can call :meth:`socket.connect_ex` again later
+You can use the :meth:`~socket.socket.connect_ex` method
+to avoid creating an exception.
+It will just return the errno value.
+To poll, you can call :meth:`~socket.socket.connect_ex` again later
 -- ``0`` or ``errno.EISCONN`` indicate that you're connected -- or you can pass this
 socket to :meth:`select.select` to check if it's writable.
 
diff --git a/Doc/faq/programming.rst b/Doc/faq/programming.rst
index ab5618db84f77e..0a88c5f6384f2b 100644
--- a/Doc/faq/programming.rst
+++ b/Doc/faq/programming.rst
@@ -454,7 +454,7 @@ There are two factors that produce this result:
    (the list), and both ``x`` and ``y`` refer to it.
 2) Lists are :term:`mutable`, which means that you can change their content.
 
-After the call to :meth:`~list.append`, the content of the mutable object has
+After the call to :meth:`!append`, the content of the mutable object has
 changed from ``[]`` to ``[10]``.  Since both the variables refer to the same
 object, using either name accesses the modified value ``[10]``.
 
@@ -924,12 +924,12 @@ module::
    'Hello, there!'
 
    >>> import array
-   >>> a = array.array('u', s)
+   >>> a = array.array('w', s)
    >>> print(a)
-   array('u', 'Hello, world')
+   array('w', 'Hello, world')
    >>> a[0] = 'y'
    >>> print(a)
-   array('u', 'yello, world')
+   array('w', 'yello, world')
    >>> a.tounicode()
    'yello, world'
 
@@ -1397,7 +1397,7 @@ To see why this happens, you need to know that (a) if an object implements an
 :meth:`~object.__iadd__` magic method, it gets called when the ``+=`` augmented
 assignment
 is executed, and its return value is what gets used in the assignment statement;
-and (b) for lists, :meth:`!__iadd__` is equivalent to calling :meth:`~list.extend` on the list
+and (b) for lists, :meth:`!__iadd__` is equivalent to calling :meth:`!extend` on the list
 and returning the list.  That's why we say that for lists, ``+=`` is a
 "shorthand" for :meth:`!list.extend`::
 
@@ -1903,7 +1903,7 @@ identity tests.  This prevents the code from being confused by objects such as
 ``float('NaN')`` that are not equal to themselves.
 
 For example, here is the implementation of
-:meth:`collections.abc.Sequence.__contains__`::
+:meth:`!collections.abc.Sequence.__contains__`::
 
     def __contains__(self, value):
         for v in self:
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index 53e8cdcae1cd66..601443d5aade94 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -22,15 +22,6 @@ Glossary
 
       * The :const:`Ellipsis` built-in constant.
 
-   2to3
-      A tool that tries to convert Python 2.x code to Python 3.x code by
-      handling most of the incompatibilities which can be detected by parsing the
-      source and traversing the parse tree.
-
-      2to3 is available in the standard library as :mod:`lib2to3`; a standalone
-      entry point is provided as :file:`Tools/scripts/2to3`.  See
-      :ref:`2to3-reference`.
-
    abstract base class
       Abstract base classes complement :term:`duck-typing` by
       providing a way to define interfaces when other techniques like
@@ -92,8 +83,8 @@ Glossary
 
    asynchronous context manager
       An object which controls the environment seen in an
-      :keyword:`async with` statement by defining :meth:`__aenter__` and
-      :meth:`__aexit__` methods.  Introduced by :pep:`492`.
+      :keyword:`async with` statement by defining :meth:`~object.__aenter__` and
+      :meth:`~object.__aexit__` methods.  Introduced by :pep:`492`.
 
    asynchronous generator
       A function which returns an :term:`asynchronous generator iterator`.  It
@@ -113,26 +104,26 @@ Glossary
       An object created by a :term:`asynchronous generator` function.
 
       This is an :term:`asynchronous iterator` which when called using the
-      :meth:`__anext__` method returns an awaitable object which will execute
+      :meth:`~object.__anext__` method returns an awaitable object which will execute
       the body of the asynchronous generator function until the next
       :keyword:`yield` expression.
 
       Each :keyword:`yield` temporarily suspends processing, remembering the
       location execution state (including local variables and pending
       try-statements).  When the *asynchronous generator iterator* effectively
-      resumes with another awaitable returned by :meth:`__anext__`, it
+      resumes with another awaitable returned by :meth:`~object.__anext__`, it
       picks up where it left off.  See :pep:`492` and :pep:`525`.
 
    asynchronous iterable
       An object, that can be used in an :keyword:`async for` statement.
       Must return an :term:`asynchronous iterator` from its
-      :meth:`__aiter__` method.  Introduced by :pep:`492`.
+      :meth:`~object.__aiter__` method.  Introduced by :pep:`492`.
 
    asynchronous iterator
-      An object that implements the :meth:`__aiter__` and :meth:`__anext__`
-      methods.  ``__anext__`` must return an :term:`awaitable` object.
+      An object that implements the :meth:`~object.__aiter__` and :meth:`~object.__anext__`
+      methods.  :meth:`~object.__anext__` must return an :term:`awaitable` object.
       :keyword:`async for` resolves the awaitables returned by an asynchronous
-      iterator's :meth:`__anext__` method until it raises a
+      iterator's :meth:`~object.__anext__` method until it raises a
       :exc:`StopAsyncIteration` exception.  Introduced by :pep:`492`.
 
    attribute
@@ -149,7 +140,7 @@ Glossary
 
    awaitable
       An object that can be used in an :keyword:`await` expression.  Can be
-      a :term:`coroutine` or an object with an :meth:`__await__` method.
+      a :term:`coroutine` or an object with an :meth:`~object.__await__` method.
       See also :pep:`492`.
 
    BDFL
@@ -160,16 +151,17 @@ Glossary
       A :term:`file object` able to read and write
       :term:`bytes-like objects <bytes-like object>`.
       Examples of binary files are files opened in binary mode (``'rb'``,
-      ``'wb'`` or ``'rb+'``), :data:`sys.stdin.buffer`,
-      :data:`sys.stdout.buffer`, and instances of :class:`io.BytesIO` and
-      :class:`gzip.GzipFile`.
+      ``'wb'`` or ``'rb+'``), :data:`sys.stdin.buffer <sys.stdin>`,
+      :data:`sys.stdout.buffer <sys.stdout>`, and instances of
+      :class:`io.BytesIO` and :class:`gzip.GzipFile`.
 
       See also :term:`text file` for a file object able to read and write
       :class:`str` objects.
 
    borrowed reference
-      In Python's C API, a borrowed reference is a reference to an object.
-      It does not modify the object reference count. It becomes a dangling
+      In Python's C API, a borrowed reference is a reference to an object,
+      where the code using the object does not own the reference.
+      It becomes a dangling
       pointer if the object is destroyed. For example, a garbage collection can
       remove the last :term:`strong reference` to the object and so destroy it.
 
@@ -247,7 +239,7 @@ Glossary
 
    context manager
       An object which controls the environment seen in a :keyword:`with`
-      statement by defining :meth:`__enter__` and :meth:`__exit__` methods.
+      statement by defining :meth:`~object.__enter__` and :meth:`~object.__exit__` methods.
       See :pep:`343`.
 
    context variable
@@ -312,8 +304,9 @@ Glossary
       :ref:`class definitions <class>` for more about decorators.
 
    descriptor
-      Any object which defines the methods :meth:`__get__`, :meth:`__set__`, or
-      :meth:`__delete__`.  When a class attribute is a descriptor, its special
+      Any object which defines the methods :meth:`~object.__get__`,
+      :meth:`~object.__set__`, or :meth:`~object.__delete__`.
+      When a class attribute is a descriptor, its special
       binding behavior is triggered upon attribute lookup.  Normally, using
       *a.b* to get, set or delete an attribute looks up the object named *b* in
       the class dictionary for *a*, but if *b* is a descriptor, the respective
@@ -327,7 +320,8 @@ Glossary
 
    dictionary
       An associative array, where arbitrary keys are mapped to values.  The
-      keys can be any object with :meth:`__hash__` and :meth:`__eq__` methods.
+      keys can be any object with :meth:`~object.__hash__` and
+      :meth:`~object.__eq__` methods.
       Called a hash in Perl.
 
    dictionary comprehension
@@ -391,7 +385,7 @@ Glossary
 
    file object
       An object exposing a file-oriented API (with methods such as
-      :meth:`read()` or :meth:`write()`) to an underlying resource.  Depending
+      :meth:`!read` or :meth:`!write`) to an underlying resource.  Depending
       on the way it was created, a file object can mediate access to a real
       on-disk file or to another type of storage or communication device
       (for example standard input/output, in-memory buffers, sockets, pipes,
@@ -510,7 +504,7 @@ Glossary
       .. index:: single: generator expression
 
    generator expression
-      An expression that returns an iterator.  It looks like a normal expression
+      An :term:`expression` that returns an :term:`iterator`.  It looks like a normal expression
       followed by a :keyword:`!for` clause defining a loop variable, range,
       and an optional :keyword:`!if` clause.  The combined expression
       generates values for an enclosing function::
@@ -567,8 +561,9 @@ Glossary
 
    hashable
       An object is *hashable* if it has a hash value which never changes during
-      its lifetime (it needs a :meth:`__hash__` method), and can be compared to
-      other objects (it needs an :meth:`__eq__` method).  Hashable objects which
+      its lifetime (it needs a :meth:`~object.__hash__` method), and can be
+      compared to other objects (it needs an :meth:`~object.__eq__` method).
+      Hashable objects which
       compare equal must have the same hash value.
 
       Hashability makes an object usable as a dictionary key and a set member,
@@ -587,6 +582,16 @@ Glossary
       :ref:`idle` is a basic editor and interpreter environment
       which ships with the standard distribution of Python.
 
+   immortal
+      If an object is immortal, its reference count is never modified, and
+      therefore it is never deallocated.
+
+      Built-in strings and singletons are immortal objects. For example,
+      :const:`True` and :const:`None` singletons are immmortal.
+
+      See `PEP 683 – Immortal Objects, Using a Fixed Refcount
+      <https://peps.python.org/pep-0683/>`_ for more information.
+
    immutable
       An object with a fixed value.  Immutable objects include numbers, strings and
       tuples.  Such an object cannot be altered.  A new object has to
@@ -644,7 +649,8 @@ Glossary
       iterables include all sequence types (such as :class:`list`, :class:`str`,
       and :class:`tuple`) and some non-sequence types like :class:`dict`,
       :term:`file objects <file object>`, and objects of any classes you define
-      with an :meth:`__iter__` method or with a :meth:`__getitem__` method
+      with an :meth:`~iterator.__iter__` method or with a
+      :meth:`~object.__getitem__` method
       that implements :term:`sequence` semantics.
 
       Iterables can be
@@ -653,7 +659,7 @@ Glossary
       as an argument to the built-in function :func:`iter`, it returns an
       iterator for the object.  This iterator is good for one pass over the set
       of values.  When using iterables, it is usually not necessary to call
-      :func:`iter` or deal with iterator objects yourself.  The ``for``
+      :func:`iter` or deal with iterator objects yourself.  The :keyword:`for`
       statement does that automatically for you, creating a temporary unnamed
       variable to hold the iterator for the duration of the loop.  See also
       :term:`iterator`, :term:`sequence`, and :term:`generator`.
@@ -664,8 +670,8 @@ Glossary
       :func:`next`) return successive items in the stream.  When no more data
       are available a :exc:`StopIteration` exception is raised instead.  At this
       point, the iterator object is exhausted and any further calls to its
-      :meth:`__next__` method just raise :exc:`StopIteration` again.  Iterators
-      are required to have an :meth:`__iter__` method that returns the iterator
+      :meth:`!__next__` method just raise :exc:`StopIteration` again.  Iterators
+      are required to have an :meth:`~iterator.__iter__` method that returns the iterator
       object itself so every iterator is also iterable and may be used in most
       places where other iterables are accepted.  One notable exception is code
       which attempts multiple iteration passes.  A container object (such as a
@@ -679,7 +685,7 @@ Glossary
       .. impl-detail::
 
          CPython does not consistently apply the requirement that an iterator
-         define :meth:`__iter__`.
+         define :meth:`~iterator.__iter__`.
 
    key function
       A key function or collation function is a callable that returns a value
@@ -873,7 +879,8 @@ Glossary
       Old name for the flavor of classes now used for all class objects.  In
       earlier Python versions, only new-style classes could use Python's newer,
       versatile features like :attr:`~object.__slots__`, descriptors,
-      properties, :meth:`__getattribute__`, class methods, and static methods.
+      properties, :meth:`~object.__getattribute__`, class methods, and static
+      methods.
 
    object
       Any data with state (attributes or value) and defined behavior
@@ -953,7 +960,7 @@ Glossary
       finders implement.
 
    path entry hook
-      A callable on the :data:`sys.path_hook` list which returns a :term:`path
+      A callable on the :data:`sys.path_hooks` list which returns a :term:`path
       entry finder` if it knows how to find modules on a specific :term:`path
       entry`.
 
@@ -1063,7 +1070,9 @@ Glossary
 
    reference count
       The number of references to an object.  When the reference count of an
-      object drops to zero, it is deallocated.  Reference counting is
+      object drops to zero, it is deallocated.  Some objects are
+      :term:`immortal` and have reference counts that are never modified, and
+      therefore the objects are never deallocated.  Reference counting is
       generally not visible to Python code, but it is a key element of the
       :term:`CPython` implementation.  Programmers can call the
       :func:`sys.getrefcount` function to return the
@@ -1084,19 +1093,19 @@ Glossary
 
    sequence
       An :term:`iterable` which supports efficient element access using integer
-      indices via the :meth:`__getitem__` special method and defines a
-      :meth:`__len__` method that returns the length of the sequence.
+      indices via the :meth:`~object.__getitem__` special method and defines a
+      :meth:`~object.__len__` method that returns the length of the sequence.
       Some built-in sequence types are :class:`list`, :class:`str`,
       :class:`tuple`, and :class:`bytes`. Note that :class:`dict` also
-      supports :meth:`__getitem__` and :meth:`__len__`, but is considered a
+      supports :meth:`~object.__getitem__` and :meth:`!__len__`, but is considered a
       mapping rather than a sequence because the lookups use arbitrary
       :term:`immutable` keys rather than integers.
 
       The :class:`collections.abc.Sequence` abstract base class
       defines a much richer interface that goes beyond just
-      :meth:`__getitem__` and :meth:`__len__`, adding :meth:`count`,
-      :meth:`index`, :meth:`__contains__`, and
-      :meth:`__reversed__`. Types that implement this expanded
+      :meth:`~object.__getitem__` and :meth:`~object.__len__`, adding
+      :meth:`count`, :meth:`index`, :meth:`~object.__contains__`, and
+      :meth:`~object.__reversed__`. Types that implement this expanded
       interface can be registered explicitly using
       :func:`~abc.ABCMeta.register`.
 
@@ -1116,6 +1125,21 @@ Glossary
       when several are given, such as in ``variable_name[1:3:5]``.  The bracket
       (subscript) notation uses :class:`slice` objects internally.
 
+   soft deprecated
+      A soft deprecation can be used when using an API which should no longer
+      be used to write new code, but it remains safe to continue using it in
+      existing code. The API remains documented and tested, but will not be
+      developed further (no enhancement).
+
+      The main difference between a "soft" and a (regular) "hard" deprecation
+      is that the soft deprecation does not imply scheduling the removal of the
+      deprecated API.
+
+      Another difference is that a soft deprecation does not issue a warning.
+
+      See `PEP 387: Soft Deprecation
+      <https://peps.python.org/pep-0387/#soft-deprecation>`_.
+
    special method
       .. index:: pair: special; method
 
@@ -1129,10 +1153,17 @@ Glossary
       an :term:`expression` or one of several constructs with a keyword, such
       as :keyword:`if`, :keyword:`while` or :keyword:`for`.
 
+   static type checker
+      An external tool that reads Python code and analyzes it, looking for
+      issues such as incorrect types. See also :term:`type hints <type hint>`
+      and the :mod:`typing` module.
+
    strong reference
       In Python's C API, a strong reference is a reference to an object
-      which increments the object's reference count when it is created and
-      decrements the object's reference count when it is deleted.
+      which is owned by the code holding the reference.  The strong
+      reference is taken by calling :c:func:`Py_INCREF` when the
+      reference is created and released with :c:func:`Py_DECREF`
+      when the reference is deleted.
 
       The :c:func:`Py_NewRef` function can be used to create a strong reference
       to an object. Usually, the :c:func:`Py_DECREF` function must be called on
@@ -1203,8 +1234,8 @@ Glossary
       attribute, or a function parameter or return value.
 
       Type hints are optional and are not enforced by Python but
-      they are useful to static type analysis tools, and aid IDEs with code
-      completion and refactoring.
+      they are useful to :term:`static type checkers <static type checker>`.
+      They can also aid IDEs with code completion and refactoring.
 
       Type hints of global variables, class attributes, and functions,
       but not local variables, can be accessed using
diff --git a/Doc/howto/annotations.rst b/Doc/howto/annotations.rst
index 472069032d6509..1134686c947d66 100644
--- a/Doc/howto/annotations.rst
+++ b/Doc/howto/annotations.rst
@@ -32,201 +32,201 @@ Annotations Best Practices
 Accessing The Annotations Dict Of An Object In Python 3.10 And Newer
 ====================================================================
 
-  Python 3.10 adds a new function to the standard library:
-  :func:`inspect.get_annotations`.  In Python versions 3.10
-  and newer, calling this function is the best practice for
-  accessing the annotations dict of any object that supports
-  annotations.  This function can also "un-stringize"
-  stringized annotations for you.
-
-  If for some reason :func:`inspect.get_annotations` isn't
-  viable for your use case, you may access the
-  ``__annotations__`` data member manually.  Best practice
-  for this changed in Python 3.10 as well: as of Python 3.10,
-  ``o.__annotations__`` is guaranteed to *always* work
-  on Python functions, classes, and modules.  If you're
-  certain the object you're examining is one of these three
-  *specific* objects, you may simply use ``o.__annotations__``
-  to get at the object's annotations dict.
-
-  However, other types of callables--for example,
-  callables created by :func:`functools.partial`--may
-  not have an ``__annotations__`` attribute defined.  When
-  accessing the ``__annotations__`` of a possibly unknown
-  object,  best practice in Python versions 3.10 and
-  newer is to call :func:`getattr` with three arguments,
-  for example ``getattr(o, '__annotations__', None)``.
-
-  Before Python 3.10, accessing ``__annotations__`` on a class that
-  defines no annotations but that has a parent class with
-  annotations would return the parent's ``__annotations__``.
-  In Python 3.10 and newer, the child class's annotations
-  will be an empty dict instead.
+Python 3.10 adds a new function to the standard library:
+:func:`inspect.get_annotations`.  In Python versions 3.10
+and newer, calling this function is the best practice for
+accessing the annotations dict of any object that supports
+annotations.  This function can also "un-stringize"
+stringized annotations for you.
+
+If for some reason :func:`inspect.get_annotations` isn't
+viable for your use case, you may access the
+``__annotations__`` data member manually.  Best practice
+for this changed in Python 3.10 as well: as of Python 3.10,
+``o.__annotations__`` is guaranteed to *always* work
+on Python functions, classes, and modules.  If you're
+certain the object you're examining is one of these three
+*specific* objects, you may simply use ``o.__annotations__``
+to get at the object's annotations dict.
+
+However, other types of callables--for example,
+callables created by :func:`functools.partial`--may
+not have an ``__annotations__`` attribute defined.  When
+accessing the ``__annotations__`` of a possibly unknown
+object,  best practice in Python versions 3.10 and
+newer is to call :func:`getattr` with three arguments,
+for example ``getattr(o, '__annotations__', None)``.
+
+Before Python 3.10, accessing ``__annotations__`` on a class that
+defines no annotations but that has a parent class with
+annotations would return the parent's ``__annotations__``.
+In Python 3.10 and newer, the child class's annotations
+will be an empty dict instead.
 
 
 Accessing The Annotations Dict Of An Object In Python 3.9 And Older
 ===================================================================
 
-  In Python 3.9 and older, accessing the annotations dict
-  of an object is much more complicated than in newer versions.
-  The problem is a design flaw in these older versions of Python,
-  specifically to do with class annotations.
+In Python 3.9 and older, accessing the annotations dict
+of an object is much more complicated than in newer versions.
+The problem is a design flaw in these older versions of Python,
+specifically to do with class annotations.
 
-  Best practice for accessing the annotations dict of other
-  objects--functions, other callables, and modules--is the same
-  as best practice for 3.10, assuming you aren't calling
-  :func:`inspect.get_annotations`: you should use three-argument
-  :func:`getattr` to access the object's ``__annotations__``
-  attribute.
+Best practice for accessing the annotations dict of other
+objects--functions, other callables, and modules--is the same
+as best practice for 3.10, assuming you aren't calling
+:func:`inspect.get_annotations`: you should use three-argument
+:func:`getattr` to access the object's ``__annotations__``
+attribute.
 
-  Unfortunately, this isn't best practice for classes.  The problem
-  is that, since ``__annotations__`` is optional on classes, and
-  because classes can inherit attributes from their base classes,
-  accessing the ``__annotations__`` attribute of a class may
-  inadvertently return the annotations dict of a *base class.*
-  As an example::
+Unfortunately, this isn't best practice for classes.  The problem
+is that, since ``__annotations__`` is optional on classes, and
+because classes can inherit attributes from their base classes,
+accessing the ``__annotations__`` attribute of a class may
+inadvertently return the annotations dict of a *base class.*
+As an example::
 
-      class Base:
-          a: int = 3
-          b: str = 'abc'
+    class Base:
+        a: int = 3
+        b: str = 'abc'
 
-      class Derived(Base):
-          pass
+    class Derived(Base):
+        pass
 
-      print(Derived.__annotations__)
+    print(Derived.__annotations__)
 
-  This will print the annotations dict from ``Base``, not
-  ``Derived``.
+This will print the annotations dict from ``Base``, not
+``Derived``.
 
-  Your code will have to have a separate code path if the object
-  you're examining is a class (``isinstance(o, type)``).
-  In that case, best practice relies on an implementation detail
-  of Python 3.9 and before: if a class has annotations defined,
-  they are stored in the class's ``__dict__`` dictionary.  Since
-  the class may or may not have annotations defined, best practice
-  is to call the ``get`` method on the class dict.
+Your code will have to have a separate code path if the object
+you're examining is a class (``isinstance(o, type)``).
+In that case, best practice relies on an implementation detail
+of Python 3.9 and before: if a class has annotations defined,
+they are stored in the class's ``__dict__`` dictionary.  Since
+the class may or may not have annotations defined, best practice
+is to call the ``get`` method on the class dict.
 
-  To put it all together, here is some sample code that safely
-  accesses the ``__annotations__`` attribute on an arbitrary
-  object in Python 3.9 and before::
+To put it all together, here is some sample code that safely
+accesses the ``__annotations__`` attribute on an arbitrary
+object in Python 3.9 and before::
 
-      if isinstance(o, type):
-          ann = o.__dict__.get('__annotations__', None)
-      else:
-          ann = getattr(o, '__annotations__', None)
+    if isinstance(o, type):
+        ann = o.__dict__.get('__annotations__', None)
+    else:
+        ann = getattr(o, '__annotations__', None)
 
-  After running this code, ``ann`` should be either a
-  dictionary or ``None``.  You're encouraged to double-check
-  the type of ``ann`` using :func:`isinstance` before further
-  examination.
+After running this code, ``ann`` should be either a
+dictionary or ``None``.  You're encouraged to double-check
+the type of ``ann`` using :func:`isinstance` before further
+examination.
 
-  Note that some exotic or malformed type objects may not have
-  a ``__dict__`` attribute, so for extra safety you may also wish
-  to use :func:`getattr` to access ``__dict__``.
+Note that some exotic or malformed type objects may not have
+a ``__dict__`` attribute, so for extra safety you may also wish
+to use :func:`getattr` to access ``__dict__``.
 
 
 Manually Un-Stringizing Stringized Annotations
 ==============================================
 
-  In situations where some annotations may be "stringized",
-  and you wish to evaluate those strings to produce the
-  Python values they represent, it really is best to
-  call :func:`inspect.get_annotations` to do this work
-  for you.
-
-  If you're using Python 3.9 or older, or if for some reason
-  you can't use :func:`inspect.get_annotations`, you'll need
-  to duplicate its logic.  You're encouraged to examine the
-  implementation of :func:`inspect.get_annotations` in the
-  current Python version and follow a similar approach.
-
-  In a nutshell, if you wish to evaluate a stringized annotation
-  on an arbitrary object ``o``:
-
-  * If ``o`` is a module, use ``o.__dict__`` as the
-    ``globals`` when calling :func:`eval`.
-  * If ``o`` is a class, use ``sys.modules[o.__module__].__dict__``
-    as the ``globals``, and ``dict(vars(o))`` as the ``locals``,
-    when calling :func:`eval`.
-  * If ``o`` is a wrapped callable using :func:`functools.update_wrapper`,
-    :func:`functools.wraps`, or :func:`functools.partial`, iteratively
-    unwrap it by accessing either ``o.__wrapped__`` or ``o.func`` as
-    appropriate, until you have found the root unwrapped function.
-  * If ``o`` is a callable (but not a class), use
-    ``o.__globals__`` as the globals when calling :func:`eval`.
-
-  However, not all string values used as annotations can
-  be successfully turned into Python values by :func:`eval`.
-  String values could theoretically contain any valid string,
-  and in practice there are valid use cases for type hints that
-  require annotating with string values that specifically
-  *can't* be evaluated.  For example:
-
-  * :pep:`604` union types using ``|``, before support for this
-    was added to Python 3.10.
-  * Definitions that aren't needed at runtime, only imported
-    when :const:`typing.TYPE_CHECKING` is true.
-
-  If :func:`eval` attempts to evaluate such values, it will
-  fail and raise an exception.  So, when designing a library
-  API that works with annotations, it's recommended to only
-  attempt to evaluate string values when explicitly requested
-  to by the caller.
+In situations where some annotations may be "stringized",
+and you wish to evaluate those strings to produce the
+Python values they represent, it really is best to
+call :func:`inspect.get_annotations` to do this work
+for you.
+
+If you're using Python 3.9 or older, or if for some reason
+you can't use :func:`inspect.get_annotations`, you'll need
+to duplicate its logic.  You're encouraged to examine the
+implementation of :func:`inspect.get_annotations` in the
+current Python version and follow a similar approach.
+
+In a nutshell, if you wish to evaluate a stringized annotation
+on an arbitrary object ``o``:
+
+* If ``o`` is a module, use ``o.__dict__`` as the
+  ``globals`` when calling :func:`eval`.
+* If ``o`` is a class, use ``sys.modules[o.__module__].__dict__``
+  as the ``globals``, and ``dict(vars(o))`` as the ``locals``,
+  when calling :func:`eval`.
+* If ``o`` is a wrapped callable using :func:`functools.update_wrapper`,
+  :func:`functools.wraps`, or :func:`functools.partial`, iteratively
+  unwrap it by accessing either ``o.__wrapped__`` or ``o.func`` as
+  appropriate, until you have found the root unwrapped function.
+* If ``o`` is a callable (but not a class), use
+  ``o.__globals__`` as the globals when calling :func:`eval`.
+
+However, not all string values used as annotations can
+be successfully turned into Python values by :func:`eval`.
+String values could theoretically contain any valid string,
+and in practice there are valid use cases for type hints that
+require annotating with string values that specifically
+*can't* be evaluated.  For example:
+
+* :pep:`604` union types using ``|``, before support for this
+  was added to Python 3.10.
+* Definitions that aren't needed at runtime, only imported
+  when :const:`typing.TYPE_CHECKING` is true.
+
+If :func:`eval` attempts to evaluate such values, it will
+fail and raise an exception.  So, when designing a library
+API that works with annotations, it's recommended to only
+attempt to evaluate string values when explicitly requested
+to by the caller.
 
 
 Best Practices For ``__annotations__`` In Any Python Version
 ============================================================
 
-  * You should avoid assigning to the ``__annotations__`` member
-    of objects directly.  Let Python manage setting ``__annotations__``.
+* You should avoid assigning to the ``__annotations__`` member
+  of objects directly.  Let Python manage setting ``__annotations__``.
 
-  * If you do assign directly to the ``__annotations__`` member
-    of an object, you should always set it to a ``dict`` object.
+* If you do assign directly to the ``__annotations__`` member
+  of an object, you should always set it to a ``dict`` object.
 
-  * If you directly access the ``__annotations__`` member
-    of an object, you should ensure that it's a
-    dictionary before attempting to examine its contents.
+* If you directly access the ``__annotations__`` member
+  of an object, you should ensure that it's a
+  dictionary before attempting to examine its contents.
 
-  * You should avoid modifying ``__annotations__`` dicts.
+* You should avoid modifying ``__annotations__`` dicts.
 
-  * You should avoid deleting the ``__annotations__`` attribute
-    of an object.
+* You should avoid deleting the ``__annotations__`` attribute
+  of an object.
 
 
 ``__annotations__`` Quirks
 ==========================
 
-  In all versions of Python 3, function
-  objects lazy-create an annotations dict if no annotations
-  are defined on that object.  You can delete the ``__annotations__``
-  attribute using ``del fn.__annotations__``, but if you then
-  access ``fn.__annotations__`` the object will create a new empty dict
-  that it will store and return as its annotations.  Deleting the
-  annotations on a function before it has lazily created its annotations
-  dict will throw an ``AttributeError``; using ``del fn.__annotations__``
-  twice in a row is guaranteed to always throw an ``AttributeError``.
-
-  Everything in the above paragraph also applies to class and module
-  objects in Python 3.10 and newer.
-
-  In all versions of Python 3, you can set ``__annotations__``
-  on a function object to ``None``.  However, subsequently
-  accessing the annotations on that object using ``fn.__annotations__``
-  will lazy-create an empty dictionary as per the first paragraph of
-  this section.  This is *not* true of modules and classes, in any Python
-  version; those objects permit setting ``__annotations__`` to any
-  Python value, and will retain whatever value is set.
-
-  If Python stringizes your annotations for you
-  (using ``from __future__ import annotations``), and you
-  specify a string as an annotation, the string will
-  itself be quoted.  In effect the annotation is quoted
-  *twice.*  For example::
-
-       from __future__ import annotations
-       def foo(a: "str"): pass
-
-       print(foo.__annotations__)
-
-  This prints ``{'a': "'str'"}``.  This shouldn't really be considered
-  a "quirk"; it's mentioned here simply because it might be surprising.
+In all versions of Python 3, function
+objects lazy-create an annotations dict if no annotations
+are defined on that object.  You can delete the ``__annotations__``
+attribute using ``del fn.__annotations__``, but if you then
+access ``fn.__annotations__`` the object will create a new empty dict
+that it will store and return as its annotations.  Deleting the
+annotations on a function before it has lazily created its annotations
+dict will throw an ``AttributeError``; using ``del fn.__annotations__``
+twice in a row is guaranteed to always throw an ``AttributeError``.
+
+Everything in the above paragraph also applies to class and module
+objects in Python 3.10 and newer.
+
+In all versions of Python 3, you can set ``__annotations__``
+on a function object to ``None``.  However, subsequently
+accessing the annotations on that object using ``fn.__annotations__``
+will lazy-create an empty dictionary as per the first paragraph of
+this section.  This is *not* true of modules and classes, in any Python
+version; those objects permit setting ``__annotations__`` to any
+Python value, and will retain whatever value is set.
+
+If Python stringizes your annotations for you
+(using ``from __future__ import annotations``), and you
+specify a string as an annotation, the string will
+itself be quoted.  In effect the annotation is quoted
+*twice.*  For example::
+
+     from __future__ import annotations
+     def foo(a: "str"): pass
+
+     print(foo.__annotations__)
+
+This prints ``{'a': "'str'"}``.  This shouldn't really be considered
+a "quirk"; it's mentioned here simply because it might be surprising.
diff --git a/Doc/howto/argparse.rst b/Doc/howto/argparse.rst
index 52e98fa9620194..ae5bab90bf8131 100644
--- a/Doc/howto/argparse.rst
+++ b/Doc/howto/argparse.rst
@@ -788,6 +788,59 @@ but not both at the same time:
      -q, --quiet
 
 
+How to translate the argparse output
+====================================
+
+The output of the :mod:`argparse` module such as its help text and error
+messages are all made translatable using the :mod:`gettext` module. This
+allows applications to easily localize messages produced by
+:mod:`argparse`. See also :ref:`i18n-howto`.
+
+For instance, in this :mod:`argparse` output:
+
+.. code-block:: shell-session
+
+   $ python prog.py --help
+   usage: prog.py [-h] [-v | -q] x y
+
+   calculate X to the power of Y
+
+   positional arguments:
+     x              the base
+     y              the exponent
+
+   options:
+     -h, --help     show this help message and exit
+     -v, --verbose
+     -q, --quiet
+
+The strings ``usage:``, ``positional arguments:``, ``options:`` and
+``show this help message and exit`` are all translatable.
+
+In order to translate these strings, they must first be extracted
+into a ``.po`` file. For example, using `Babel <https://babel.pocoo.org/>`__,
+run this command:
+
+.. code-block:: shell-session
+
+  $ pybabel extract -o messages.po /usr/lib/python3.12/argparse.py
+
+This command will extract all translatable strings from the :mod:`argparse`
+module and output them into a file named ``messages.po``. This command assumes
+that your Python installation is in ``/usr/lib``.
+
+You can find out the location of the :mod:`argparse` module on your system
+using this script::
+
+   import argparse
+   print(argparse.__file__)
+
+Once the messages in the ``.po`` file are translated and the translations are
+installed using :mod:`gettext`, :mod:`argparse` will be able to display the
+translated messages.
+
+To translate your own strings in the :mod:`argparse` output, use :mod:`gettext`.
+
 Conclusion
 ==========
 
diff --git a/Doc/howto/clinic.rst b/Doc/howto/clinic.rst
index 4620b4617e3450..060977246149cf 100644
--- a/Doc/howto/clinic.rst
+++ b/Doc/howto/clinic.rst
@@ -1,1822 +1,14 @@
-.. highlight:: c
+:orphan:
 
-.. _howto-clinic:
+.. This page is retained solely for existing links to /howto/clinic.html.
+   Direct readers to the devguide.
 
 **********************
 Argument Clinic How-To
 **********************
 
-:author: Larry Hastings
 
+.. note::
 
-.. topic:: Abstract
-
-  Argument Clinic is a preprocessor for CPython C files.
-  Its purpose is to automate all the boilerplate involved
-  with writing argument parsing code for "builtins".
-  This document shows you how to convert your first C
-  function to work with Argument Clinic, and then introduces
-  some advanced topics on Argument Clinic usage.
-
-  Currently Argument Clinic is considered internal-only
-  for CPython.  Its use is not supported for files outside
-  CPython, and no guarantees are made regarding backwards
-  compatibility for future versions.  In other words: if you
-  maintain an external C extension for CPython, you're welcome
-  to experiment with Argument Clinic in your own code.  But the
-  version of Argument Clinic that ships with the next version
-  of CPython *could* be totally incompatible and break all your code.
-
-The Goals Of Argument Clinic
-============================
-
-Argument Clinic's primary goal
-is to take over responsibility for all argument parsing code
-inside CPython.  This means that, when you convert a function
-to work with Argument Clinic, that function should no longer
-do any of its own argument parsing—the code generated by
-Argument Clinic should be a "black box" to you, where CPython
-calls in at the top, and your code gets called at the bottom,
-with ``PyObject *args`` (and maybe ``PyObject *kwargs``)
-magically converted into the C variables and types you need.
-
-In order for Argument Clinic to accomplish its primary goal,
-it must be easy to use.  Currently, working with CPython's
-argument parsing library is a chore, requiring maintaining
-redundant information in a surprising number of places.
-When you use Argument Clinic, you don't have to repeat yourself.
-
-Obviously, no one would want to use Argument Clinic unless
-it's solving their problem—and without creating new problems of
-its own.
-So it's paramount that Argument Clinic generate correct code.
-It'd be nice if the code was faster, too, but at the very least
-it should not introduce a major speed regression.  (Eventually Argument
-Clinic *should* make a major speedup possible—we could
-rewrite its code generator to produce tailor-made argument
-parsing code, rather than calling the general-purpose CPython
-argument parsing library.  That would make for the fastest
-argument parsing possible!)
-
-Additionally, Argument Clinic must be flexible enough to
-work with any approach to argument parsing.  Python has
-some functions with some very strange parsing behaviors;
-Argument Clinic's goal is to support all of them.
-
-Finally, the original motivation for Argument Clinic was
-to provide introspection "signatures" for CPython builtins.
-It used to be, the introspection query functions would throw
-an exception if you passed in a builtin.  With Argument
-Clinic, that's a thing of the past!
-
-One idea you should keep in mind, as you work with
-Argument Clinic: the more information you give it, the
-better job it'll be able to do.
-Argument Clinic is admittedly relatively simple right
-now.  But as it evolves it will get more sophisticated,
-and it should be able to do many interesting and smart
-things with all the information you give it.
-
-
-Basic Concepts And Usage
-========================
-
-Argument Clinic ships with CPython; you'll find it in ``Tools/clinic/clinic.py``.
-If you run that script, specifying a C file as an argument:
-
-.. code-block:: shell-session
-
-    $ python Tools/clinic/clinic.py foo.c
-
-Argument Clinic will scan over the file looking for lines that
-look exactly like this:
-
-.. code-block:: none
-
-    /*[clinic input]
-
-When it finds one, it reads everything up to a line that looks
-exactly like this:
-
-.. code-block:: none
-
-    [clinic start generated code]*/
-
-Everything in between these two lines is input for Argument Clinic.
-All of these lines, including the beginning and ending comment
-lines, are collectively called an Argument Clinic "block".
-
-When Argument Clinic parses one of these blocks, it
-generates output.  This output is rewritten into the C file
-immediately after the block, followed by a comment containing a checksum.
-The Argument Clinic block now looks like this:
-
-.. code-block:: none
-
-    /*[clinic input]
-    ... clinic input goes here ...
-    [clinic start generated code]*/
-    ... clinic output goes here ...
-    /*[clinic end generated code: checksum=...]*/
-
-If you run Argument Clinic on the same file a second time, Argument Clinic
-will discard the old output and write out the new output with a fresh checksum
-line.  However, if the input hasn't changed, the output won't change either.
-
-You should never modify the output portion of an Argument Clinic block.  Instead,
-change the input until it produces the output you want.  (That's the purpose of the
-checksum—to detect if someone changed the output, as these edits would be lost
-the next time Argument Clinic writes out fresh output.)
-
-For the sake of clarity, here's the terminology we'll use with Argument Clinic:
-
-* The first line of the comment (``/*[clinic input]``) is the *start line*.
-* The last line of the initial comment (``[clinic start generated code]*/``) is the *end line*.
-* The last line (``/*[clinic end generated code: checksum=...]*/``) is the *checksum line*.
-* In between the start line and the end line is the *input*.
-* In between the end line and the checksum line is the *output*.
-* All the text collectively, from the start line to the checksum line inclusively,
-  is the *block*.  (A block that hasn't been successfully processed by Argument
-  Clinic yet doesn't have output or a checksum line, but it's still considered
-  a block.)
-
-
-Converting Your First Function
-==============================
-
-The best way to get a sense of how Argument Clinic works is to
-convert a function to work with it.  Here, then, are the bare
-minimum steps you'd need to follow to convert a function to
-work with Argument Clinic.  Note that for code you plan to
-check in to CPython, you really should take the conversion farther,
-using some of the advanced concepts you'll see later on in
-the document (like "return converters" and "self converters").
-But we'll keep it simple for this walkthrough so you can learn.
-
-Let's dive in!
-
-0. Make sure you're working with a freshly updated checkout
-   of the CPython trunk.
-
-1. Find a Python builtin that calls either :c:func:`PyArg_ParseTuple`
-   or :c:func:`PyArg_ParseTupleAndKeywords`, and hasn't been converted
-   to work with Argument Clinic yet.
-   For my example I'm using ``_pickle.Pickler.dump()``.
-
-2. If the call to the ``PyArg_Parse`` function uses any of the
-   following format units:
-
-   .. code-block:: none
-
-       O&
-       O!
-       es
-       es#
-       et
-       et#
-
-   or if it has multiple calls to :c:func:`PyArg_ParseTuple`,
-   you should choose a different function.  Argument Clinic *does*
-   support all of these scenarios.  But these are advanced
-   topics—let's do something simpler for your first function.
-
-   Also, if the function has multiple calls to :c:func:`PyArg_ParseTuple`
-   or :c:func:`PyArg_ParseTupleAndKeywords` where it supports different
-   types for the same argument, or if the function uses something besides
-   PyArg_Parse functions to parse its arguments, it probably
-   isn't suitable for conversion to Argument Clinic.  Argument Clinic
-   doesn't support generic functions or polymorphic parameters.
-
-3. Add the following boilerplate above the function, creating our block::
-
-    /*[clinic input]
-    [clinic start generated code]*/
-
-4. Cut the docstring and paste it in between the ``[clinic]`` lines,
-   removing all the junk that makes it a properly quoted C string.
-   When you're done you should have just the text, based at the left
-   margin, with no line wider than 80 characters.
-   (Argument Clinic will preserve indents inside the docstring.)
-
-   If the old docstring had a first line that looked like a function
-   signature, throw that line away.  (The docstring doesn't need it
-   anymore—when you use ``help()`` on your builtin in the future,
-   the first line will be built automatically based on the function's
-   signature.)
-
-   Sample::
-
-    /*[clinic input]
-    Write a pickled representation of obj to the open file.
-    [clinic start generated code]*/
-
-5. If your docstring doesn't have a "summary" line, Argument Clinic will
-   complain.  So let's make sure it has one.  The "summary" line should
-   be a paragraph consisting of a single 80-column line
-   at the beginning of the docstring.
-
-   (Our example docstring consists solely of a summary line, so the sample
-   code doesn't have to change for this step.)
-
-6. Above the docstring, enter the name of the function, followed
-   by a blank line.  This should be the Python name of the function,
-   and should be the full dotted path
-   to the function—it should start with the name of the module,
-   include any sub-modules, and if the function is a method on
-   a class it should include the class name too.
-
-   Sample::
-
-    /*[clinic input]
-    _pickle.Pickler.dump
-
-    Write a pickled representation of obj to the open file.
-    [clinic start generated code]*/
-
-7. If this is the first time that module or class has been used with Argument
-   Clinic in this C file,
-   you must declare the module and/or class.  Proper Argument Clinic hygiene
-   prefers declaring these in a separate block somewhere near the
-   top of the C file, in the same way that include files and statics go at
-   the top.  (In our sample code we'll just show the two blocks next to
-   each other.)
-
-   The name of the class and module should be the same as the one
-   seen by Python.  Check the name defined in the :c:type:`PyModuleDef`
-   or :c:type:`PyTypeObject` as appropriate.
-
-   When you declare a class, you must also specify two aspects of its type
-   in C: the type declaration you'd use for a pointer to an instance of
-   this class, and a pointer to the :c:type:`PyTypeObject` for this class.
-
-   Sample::
-
-       /*[clinic input]
-       module _pickle
-       class _pickle.Pickler "PicklerObject *" "&Pickler_Type"
-       [clinic start generated code]*/
-
-       /*[clinic input]
-       _pickle.Pickler.dump
-
-       Write a pickled representation of obj to the open file.
-       [clinic start generated code]*/
-
-
-
-
-8. Declare each of the parameters to the function.  Each parameter
-   should get its own line.  All the parameter lines should be
-   indented from the function name and the docstring.
-
-   The general form of these parameter lines is as follows:
-
-   .. code-block:: none
-
-       name_of_parameter: converter
-
-   If the parameter has a default value, add that after the
-   converter:
-
-   .. code-block:: none
-
-       name_of_parameter: converter = default_value
-
-   Argument Clinic's support for "default values" is quite sophisticated;
-   please see :ref:`the section below on default values <default_values>`
-   for more information.
-
-   Add a blank line below the parameters.
-
-   What's a "converter"?  It establishes both the type
-   of the variable used in C, and the method to convert the Python
-   value into a C value at runtime.
-   For now you're going to use what's called a "legacy converter"—a
-   convenience syntax intended to make porting old code into Argument
-   Clinic easier.
-
-   For each parameter, copy the "format unit" for that
-   parameter from the ``PyArg_Parse()`` format argument and
-   specify *that* as its converter, as a quoted
-   string.  ("format unit" is the formal name for the one-to-three
-   character substring of the ``format`` parameter that tells
-   the argument parsing function what the type of the variable
-   is and how to convert it.  For more on format units please
-   see :ref:`arg-parsing`.)
-
-   For multicharacter format units like ``z#``, use the
-   entire two-or-three character string.
-
-   Sample::
-
-        /*[clinic input]
-        module _pickle
-        class _pickle.Pickler "PicklerObject *" "&Pickler_Type"
-        [clinic start generated code]*/
-
-        /*[clinic input]
-        _pickle.Pickler.dump
-
-           obj: 'O'
-
-       Write a pickled representation of obj to the open file.
-       [clinic start generated code]*/
-
-9. If your function has ``|`` in the format string, meaning some
-   parameters have default values, you can ignore it.  Argument
-   Clinic infers which parameters are optional based on whether
-   or not they have default values.
-
-   If your function has ``$`` in the format string, meaning it
-   takes keyword-only arguments, specify ``*`` on a line by
-   itself before the first keyword-only argument, indented the
-   same as the parameter lines.
-
-   (``_pickle.Pickler.dump`` has neither, so our sample is unchanged.)
-
-
-10. If the existing C function calls :c:func:`PyArg_ParseTuple`
-    (as opposed to :c:func:`PyArg_ParseTupleAndKeywords`), then all its
-    arguments are positional-only.
-
-    To mark all parameters as positional-only in Argument Clinic,
-    add a ``/`` on a line by itself after the last parameter,
-    indented the same as the parameter lines.
-
-    Currently this is all-or-nothing; either all parameters are
-    positional-only, or none of them are.  (In the future Argument
-    Clinic may relax this restriction.)
-
-    Sample::
-
-        /*[clinic input]
-        module _pickle
-        class _pickle.Pickler "PicklerObject *" "&Pickler_Type"
-        [clinic start generated code]*/
-
-        /*[clinic input]
-        _pickle.Pickler.dump
-
-            obj: 'O'
-            /
-
-        Write a pickled representation of obj to the open file.
-        [clinic start generated code]*/
-
-11. It's helpful to write a per-parameter docstring for each parameter.
-    But per-parameter docstrings are optional; you can skip this step
-    if you prefer.
-
-    Here's how to add a per-parameter docstring.  The first line
-    of the per-parameter docstring must be indented further than the
-    parameter definition.  The left margin of this first line establishes
-    the left margin for the whole per-parameter docstring; all the text
-    you write will be outdented by this amount.  You can write as much
-    text as you like, across multiple lines if you wish.
-
-    Sample::
-
-        /*[clinic input]
-        module _pickle
-        class _pickle.Pickler "PicklerObject *" "&Pickler_Type"
-        [clinic start generated code]*/
-
-        /*[clinic input]
-        _pickle.Pickler.dump
-
-            obj: 'O'
-                The object to be pickled.
-            /
-
-        Write a pickled representation of obj to the open file.
-        [clinic start generated code]*/
-
-12. Save and close the file, then run ``Tools/clinic/clinic.py`` on
-    it.  With luck everything worked---your block now has output, and
-    a ``.c.h`` file has been generated! Reopen the file in your
-    text editor to see::
-
-       /*[clinic input]
-       _pickle.Pickler.dump
-
-           obj: 'O'
-               The object to be pickled.
-           /
-
-       Write a pickled representation of obj to the open file.
-       [clinic start generated code]*/
-
-       static PyObject *
-       _pickle_Pickler_dump(PicklerObject *self, PyObject *obj)
-       /*[clinic end generated code: output=87ecad1261e02ac7 input=552eb1c0f52260d9]*/
-
-    Obviously, if Argument Clinic didn't produce any output, it's because
-    it found an error in your input.  Keep fixing your errors and retrying
-    until Argument Clinic processes your file without complaint.
-
-    For readability, most of the glue code has been generated to a ``.c.h``
-    file.  You'll need to include that in your original ``.c`` file,
-    typically right after the clinic module block::
-
-       #include "clinic/_pickle.c.h"
-
-13. Double-check that the argument-parsing code Argument Clinic generated
-    looks basically the same as the existing code.
-
-    First, ensure both places use the same argument-parsing function.
-    The existing code must call either
-    :c:func:`PyArg_ParseTuple` or :c:func:`PyArg_ParseTupleAndKeywords`;
-    ensure that the code generated by Argument Clinic calls the
-    *exact* same function.
-
-    Second, the format string passed in to :c:func:`PyArg_ParseTuple` or
-    :c:func:`PyArg_ParseTupleAndKeywords` should be *exactly* the same
-    as the hand-written one in the existing function, up to the colon
-    or semi-colon.
-
-    (Argument Clinic always generates its format strings
-    with a ``:`` followed by the name of the function.  If the
-    existing code's format string ends with ``;``, to provide
-    usage help, this change is harmless—don't worry about it.)
-
-    Third, for parameters whose format units require two arguments
-    (like a length variable, or an encoding string, or a pointer
-    to a conversion function), ensure that the second argument is
-    *exactly* the same between the two invocations.
-
-    Fourth, inside the output portion of the block you'll find a preprocessor
-    macro defining the appropriate static :c:type:`PyMethodDef` structure for
-    this builtin::
-
-        #define __PICKLE_PICKLER_DUMP_METHODDEF    \
-        {"dump", (PyCFunction)__pickle_Pickler_dump, METH_O, __pickle_Pickler_dump__doc__},
-
-    This static structure should be *exactly* the same as the existing static
-    :c:type:`PyMethodDef` structure for this builtin.
-
-    If any of these items differ in *any way*,
-    adjust your Argument Clinic function specification and rerun
-    ``Tools/clinic/clinic.py`` until they *are* the same.
-
-
-14. Notice that the last line of its output is the declaration
-    of your "impl" function.  This is where the builtin's implementation goes.
-    Delete the existing prototype of the function you're modifying, but leave
-    the opening curly brace.  Now delete its argument parsing code and the
-    declarations of all the variables it dumps the arguments into.
-    Notice how the Python arguments are now arguments to this impl function;
-    if the implementation used different names for these variables, fix it.
-
-    Let's reiterate, just because it's kind of weird.  Your code should now
-    look like this::
-
-        static return_type
-        your_function_impl(...)
-        /*[clinic end generated code: checksum=...]*/
-        {
-        ...
-
-    Argument Clinic generated the checksum line and the function prototype just
-    above it.  You should write the opening (and closing) curly braces for the
-    function, and the implementation inside.
-
-    Sample::
-
-        /*[clinic input]
-        module _pickle
-        class _pickle.Pickler "PicklerObject *" "&Pickler_Type"
-        [clinic start generated code]*/
-        /*[clinic end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
-
-        /*[clinic input]
-        _pickle.Pickler.dump
-
-            obj: 'O'
-                The object to be pickled.
-            /
-
-        Write a pickled representation of obj to the open file.
-        [clinic start generated code]*/
-
-        PyDoc_STRVAR(__pickle_Pickler_dump__doc__,
-        "Write a pickled representation of obj to the open file.\n"
-        "\n"
-        ...
-        static PyObject *
-        _pickle_Pickler_dump_impl(PicklerObject *self, PyObject *obj)
-        /*[clinic end generated code: checksum=3bd30745bf206a48f8b576a1da3d90f55a0a4187]*/
-        {
-            /* Check whether the Pickler was initialized correctly (issue3664).
-               Developers often forget to call __init__() in their subclasses, which
-               would trigger a segfault without this check. */
-            if (self->write == NULL) {
-                PyErr_Format(PicklingError,
-                             "Pickler.__init__() was not called by %s.__init__()",
-                             Py_TYPE(self)->tp_name);
-                return NULL;
-            }
-
-            if (_Pickler_ClearBuffer(self) < 0)
-                return NULL;
-
-            ...
-
-15. Remember the macro with the :c:type:`PyMethodDef` structure for this
-    function?  Find the existing :c:type:`PyMethodDef` structure for this
-    function and replace it with a reference to the macro.  (If the builtin
-    is at module scope, this will probably be very near the end of the file;
-    if the builtin is a class method, this will probably be below but relatively
-    near to the implementation.)
-
-    Note that the body of the macro contains a trailing comma.  So when you
-    replace the existing static :c:type:`PyMethodDef` structure with the macro,
-    *don't* add a comma to the end.
-
-    Sample::
-
-        static struct PyMethodDef Pickler_methods[] = {
-            __PICKLE_PICKLER_DUMP_METHODDEF
-            __PICKLE_PICKLER_CLEAR_MEMO_METHODDEF
-            {NULL, NULL}                /* sentinel */
-        };
-
-
-16. Argument Clinic may generate new instances of ``_Py_ID``. For example::
-
-        &_Py_ID(new_unique_py_id)
-
-    If it does, you'll have to run ``Tools/scripts/generate_global_objects.py``
-    to regenerate the list of precompiled identifiers at this point.
-
-
-17. Compile, then run the relevant portions of the regression-test suite.
-    This change should not introduce any new compile-time warnings or errors,
-    and there should be no externally visible change to Python's behavior.
-
-    Well, except for one difference: ``inspect.signature()`` run on your function
-    should now provide a valid signature!
-
-    Congratulations, you've ported your first function to work with Argument Clinic!
-
-Advanced Topics
-===============
-
-Now that you've had some experience working with Argument Clinic, it's time
-for some advanced topics.
-
-
-Symbolic default values
------------------------
-
-The default value you provide for a parameter can't be any arbitrary
-expression.  Currently the following are explicitly supported:
-
-* Numeric constants (integer and float)
-* String constants
-* ``True``, ``False``, and ``None``
-* Simple symbolic constants like ``sys.maxsize``, which must
-  start with the name of the module
-
-(In the future, this may need to get even more elaborate,
-to allow full expressions like ``CONSTANT - 1``.)
-
-
-Renaming the C functions and variables generated by Argument Clinic
--------------------------------------------------------------------
-
-Argument Clinic automatically names the functions it generates for you.
-Occasionally this may cause a problem, if the generated name collides with
-the name of an existing C function.  There's an easy solution: override the names
-used for the C functions.  Just add the keyword ``"as"``
-to your function declaration line, followed by the function name you wish to use.
-Argument Clinic will use that function name for the base (generated) function,
-then add ``"_impl"`` to the end and use that for the name of the impl function.
-
-For example, if we wanted to rename the C function names generated for
-``pickle.Pickler.dump``, it'd look like this::
-
-    /*[clinic input]
-    pickle.Pickler.dump as pickler_dumper
-
-    ...
-
-The base function would now be named ``pickler_dumper()``,
-and the impl function would now be named ``pickler_dumper_impl()``.
-
-
-Similarly, you may have a problem where you want to give a parameter
-a specific Python name, but that name may be inconvenient in C.  Argument
-Clinic allows you to give a parameter different names in Python and in C,
-using the same ``"as"`` syntax::
-
-    /*[clinic input]
-    pickle.Pickler.dump
-
-        obj: object
-        file as file_obj: object
-        protocol: object = NULL
-        *
-        fix_imports: bool = True
-
-Here, the name used in Python (in the signature and the ``keywords``
-array) would be ``file``, but the C variable would be named ``file_obj``.
-
-You can use this to rename the ``self`` parameter too!
-
-
-Converting functions using PyArg_UnpackTuple
---------------------------------------------
-
-To convert a function parsing its arguments with :c:func:`PyArg_UnpackTuple`,
-simply write out all the arguments, specifying each as an ``object``.  You
-may specify the ``type`` argument to cast the type as appropriate.  All
-arguments should be marked positional-only (add a ``/`` on a line by itself
-after the last argument).
-
-Currently the generated code will use :c:func:`PyArg_ParseTuple`, but this
-will change soon.
-
-Optional Groups
----------------
-
-Some legacy functions have a tricky approach to parsing their arguments:
-they count the number of positional arguments, then use a ``switch`` statement
-to call one of several different :c:func:`PyArg_ParseTuple` calls depending on
-how many positional arguments there are.  (These functions cannot accept
-keyword-only arguments.)  This approach was used to simulate optional
-arguments back before :c:func:`PyArg_ParseTupleAndKeywords` was created.
-
-While functions using this approach can often be converted to
-use :c:func:`PyArg_ParseTupleAndKeywords`, optional arguments, and default values,
-it's not always possible.  Some of these legacy functions have
-behaviors :c:func:`PyArg_ParseTupleAndKeywords` doesn't directly support.
-The most obvious example is the builtin function ``range()``, which has
-an optional argument on the *left* side of its required argument!
-Another example is ``curses.window.addch()``, which has a group of two
-arguments that must always be specified together.  (The arguments are
-called ``x`` and ``y``; if you call the function passing in ``x``,
-you must also pass in ``y``—and if you don't pass in ``x`` you may not
-pass in ``y`` either.)
-
-In any case, the goal of Argument Clinic is to support argument parsing
-for all existing CPython builtins without changing their semantics.
-Therefore Argument Clinic supports
-this alternate approach to parsing, using what are called *optional groups*.
-Optional groups are groups of arguments that must all be passed in together.
-They can be to the left or the right of the required arguments.  They
-can *only* be used with positional-only parameters.
-
-.. note:: Optional groups are *only* intended for use when converting
-          functions that make multiple calls to :c:func:`PyArg_ParseTuple`!
-          Functions that use *any* other approach for parsing arguments
-          should *almost never* be converted to Argument Clinic using
-          optional groups.  Functions using optional groups currently
-          cannot have accurate signatures in Python, because Python just
-          doesn't understand the concept.  Please avoid using optional
-          groups wherever possible.
-
-To specify an optional group, add a ``[`` on a line by itself before
-the parameters you wish to group together, and a ``]`` on a line by itself
-after these parameters.  As an example, here's how ``curses.window.addch``
-uses optional groups to make the first two parameters and the last
-parameter optional::
-
-    /*[clinic input]
-
-    curses.window.addch
-
-        [
-        x: int
-          X-coordinate.
-        y: int
-          Y-coordinate.
-        ]
-
-        ch: object
-          Character to add.
-
-        [
-        attr: long
-          Attributes for the character.
-        ]
-        /
-
-    ...
-
-
-Notes:
-
-* For every optional group, one additional parameter will be passed into the
-  impl function representing the group.  The parameter will be an int named
-  ``group_{direction}_{number}``,
-  where ``{direction}`` is either ``right`` or ``left`` depending on whether the group
-  is before or after the required parameters, and ``{number}`` is a monotonically
-  increasing number (starting at 1) indicating how far away the group is from
-  the required parameters.  When the impl is called, this parameter will be set
-  to zero if this group was unused, and set to non-zero if this group was used.
-  (By used or unused, I mean whether or not the parameters received arguments
-  in this invocation.)
-
-* If there are no required arguments, the optional groups will behave
-  as if they're to the right of the required arguments.
-
-* In the case of ambiguity, the argument parsing code
-  favors parameters on the left (before the required parameters).
-
-* Optional groups can only contain positional-only parameters.
-
-* Optional groups are *only* intended for legacy code.  Please do not
-  use optional groups for new code.
-
-
-Using real Argument Clinic converters, instead of "legacy converters"
----------------------------------------------------------------------
-
-To save time, and to minimize how much you need to learn
-to achieve your first port to Argument Clinic, the walkthrough above tells
-you to use "legacy converters".  "Legacy converters" are a convenience,
-designed explicitly to make porting existing code to Argument Clinic
-easier.  And to be clear, their use is acceptable when porting code for
-Python 3.4.
-
-However, in the long term we probably want all our blocks to
-use Argument Clinic's real syntax for converters.  Why?  A couple
-reasons:
-
-* The proper converters are far easier to read and clearer in their intent.
-* There are some format units that are unsupported as "legacy converters",
-  because they require arguments, and the legacy converter syntax doesn't
-  support specifying arguments.
-* In the future we may have a new argument parsing library that isn't
-  restricted to what :c:func:`PyArg_ParseTuple` supports; this flexibility
-  won't be available to parameters using legacy converters.
-
-Therefore, if you don't mind a little extra effort, please use the normal
-converters instead of legacy converters.
-
-In a nutshell, the syntax for Argument Clinic (non-legacy) converters
-looks like a Python function call.  However, if there are no explicit
-arguments to the function (all functions take their default values),
-you may omit the parentheses.  Thus ``bool`` and ``bool()`` are exactly
-the same converters.
-
-All arguments to Argument Clinic converters are keyword-only.
-All Argument Clinic converters accept the following arguments:
-
-  ``c_default``
-    The default value for this parameter when defined in C.
-    Specifically, this will be the initializer for the variable declared
-    in the "parse function".  See :ref:`the section on default values <default_values>`
-    for how to use this.
-    Specified as a string.
-
-  ``annotation``
-    The annotation value for this parameter.  Not currently supported,
-    because :pep:`8` mandates that the Python library may not use
-    annotations.
-
-  ``unused``
-    Wrap the argument with :c:macro:`Py_UNUSED` in the impl function signature.
-
-In addition, some converters accept additional arguments.  Here is a list
-of these arguments, along with their meanings:
-
-  ``accept``
-    A set of Python types (and possibly pseudo-types);
-    this restricts the allowable Python argument to values of these types.
-    (This is not a general-purpose facility; as a rule it only supports
-    specific lists of types as shown in the legacy converter table.)
-
-    To accept ``None``, add ``NoneType`` to this set.
-
-  ``bitwise``
-    Only supported for unsigned integers.  The native integer value of this
-    Python argument will be written to the parameter without any range checking,
-    even for negative values.
-
-  ``converter``
-    Only supported by the ``object`` converter.  Specifies the name of a
-    :ref:`C "converter function" <o_ampersand>`
-    to use to convert this object to a native type.
-
-  ``encoding``
-    Only supported for strings.  Specifies the encoding to use when converting
-    this string from a Python str (Unicode) value into a C ``char *`` value.
-
-
-  ``subclass_of``
-    Only supported for the ``object`` converter.  Requires that the Python
-    value be a subclass of a Python type, as expressed in C.
-
-  ``type``
-    Only supported for the ``object`` and ``self`` converters.  Specifies
-    the C type that will be used to declare the variable.  Default value is
-    ``"PyObject *"``.
-
-  ``zeroes``
-    Only supported for strings.  If true, embedded NUL bytes (``'\\0'``) are
-    permitted inside the value.  The length of the string will be passed in
-    to the impl function, just after the string parameter, as a parameter named
-    ``<parameter_name>_length``.
-
-Please note, not every possible combination of arguments will work.
-Usually these arguments are implemented by specific ``PyArg_ParseTuple``
-*format units*, with specific behavior.  For example, currently you cannot
-call ``unsigned_short`` without also specifying ``bitwise=True``.
-Although it's perfectly reasonable to think this would work, these semantics don't
-map to any existing format unit.  So Argument Clinic doesn't support it.  (Or, at
-least, not yet.)
-
-Below is a table showing the mapping of legacy converters into real
-Argument Clinic converters.  On the left is the legacy converter,
-on the right is the text you'd replace it with.
-
-=========   =================================================================================
-``'B'``     ``unsigned_char(bitwise=True)``
-``'b'``     ``unsigned_char``
-``'c'``     ``char``
-``'C'``     ``int(accept={str})``
-``'d'``     ``double``
-``'D'``     ``Py_complex``
-``'es'``    ``str(encoding='name_of_encoding')``
-``'es#'``   ``str(encoding='name_of_encoding', zeroes=True)``
-``'et'``    ``str(encoding='name_of_encoding', accept={bytes, bytearray, str})``
-``'et#'``   ``str(encoding='name_of_encoding', accept={bytes, bytearray, str}, zeroes=True)``
-``'f'``     ``float``
-``'h'``     ``short``
-``'H'``     ``unsigned_short(bitwise=True)``
-``'i'``     ``int``
-``'I'``     ``unsigned_int(bitwise=True)``
-``'k'``     ``unsigned_long(bitwise=True)``
-``'K'``     ``unsigned_long_long(bitwise=True)``
-``'l'``     ``long``
-``'L'``     ``long long``
-``'n'``     ``Py_ssize_t``
-``'O'``     ``object``
-``'O!'``    ``object(subclass_of='&PySomething_Type')``
-``'O&'``    ``object(converter='name_of_c_function')``
-``'p'``     ``bool``
-``'S'``     ``PyBytesObject``
-``'s'``     ``str``
-``'s#'``    ``str(zeroes=True)``
-``'s*'``    ``Py_buffer(accept={buffer, str})``
-``'U'``     ``unicode``
-``'u'``     ``wchar_t``
-``'u#'``    ``wchar_t(zeroes=True)``
-``'w*'``    ``Py_buffer(accept={rwbuffer})``
-``'Y'``     ``PyByteArrayObject``
-``'y'``     ``str(accept={bytes})``
-``'y#'``    ``str(accept={robuffer}, zeroes=True)``
-``'y*'``    ``Py_buffer``
-``'Z'``     ``wchar_t(accept={str, NoneType})``
-``'Z#'``    ``wchar_t(accept={str, NoneType}, zeroes=True)``
-``'z'``     ``str(accept={str, NoneType})``
-``'z#'``    ``str(accept={str, NoneType}, zeroes=True)``
-``'z*'``    ``Py_buffer(accept={buffer, str, NoneType})``
-=========   =================================================================================
-
-As an example, here's our sample ``pickle.Pickler.dump`` using the proper
-converter::
-
-    /*[clinic input]
-    pickle.Pickler.dump
-
-        obj: object
-            The object to be pickled.
-        /
-
-    Write a pickled representation of obj to the open file.
-    [clinic start generated code]*/
-
-One advantage of real converters is that they're more flexible than legacy
-converters.  For example, the ``unsigned_int`` converter (and all the
-``unsigned_`` converters) can be specified without ``bitwise=True``.  Their
-default behavior performs range checking on the value, and they won't accept
-negative numbers.  You just can't do that with a legacy converter!
-
-Argument Clinic will show you all the converters it has
-available.  For each converter it'll show you all the parameters
-it accepts, along with the default value for each parameter.
-Just run ``Tools/clinic/clinic.py --converters`` to see the full list.
-
-Py_buffer
----------
-
-When using the ``Py_buffer`` converter
-(or the ``'s*'``, ``'w*'``, ``'*y'``, or ``'z*'`` legacy converters),
-you *must* not call :c:func:`PyBuffer_Release` on the provided buffer.
-Argument Clinic generates code that does it for you (in the parsing function).
-
-
-
-Advanced converters
--------------------
-
-Remember those format units you skipped for your first
-time because they were advanced?  Here's how to handle those too.
-
-The trick is, all those format units take arguments—either
-conversion functions, or types, or strings specifying an encoding.
-(But "legacy converters" don't support arguments.  That's why we
-skipped them for your first function.)  The argument you specified
-to the format unit is now an argument to the converter; this
-argument is either ``converter`` (for ``O&``), ``subclass_of`` (for ``O!``),
-or ``encoding`` (for all the format units that start with ``e``).
-
-When using ``subclass_of``, you may also want to use the other
-custom argument for ``object()``: ``type``, which lets you set the type
-actually used for the parameter.  For example, if you want to ensure
-that the object is a subclass of ``PyUnicode_Type``, you probably want
-to use the converter ``object(type='PyUnicodeObject *', subclass_of='&PyUnicode_Type')``.
-
-One possible problem with using Argument Clinic: it takes away some possible
-flexibility for the format units starting with ``e``.  When writing a
-``PyArg_Parse`` call by hand, you could theoretically decide at runtime what
-encoding string to pass in to :c:func:`PyArg_ParseTuple`.   But now this string must
-be hard-coded at Argument-Clinic-preprocessing-time.  This limitation is deliberate;
-it made supporting this format unit much easier, and may allow for future optimizations.
-This restriction doesn't seem unreasonable; CPython itself always passes in static
-hard-coded encoding strings for parameters whose format units start with ``e``.
-
-
-.. _default_values:
-
-Parameter default values
-------------------------
-
-Default values for parameters can be any of a number of values.
-At their simplest, they can be string, int, or float literals:
-
-.. code-block:: none
-
-    foo: str = "abc"
-    bar: int = 123
-    bat: float = 45.6
-
-They can also use any of Python's built-in constants:
-
-.. code-block:: none
-
-    yep:  bool = True
-    nope: bool = False
-    nada: object = None
-
-There's also special support for a default value of ``NULL``, and
-for simple expressions, documented in the following sections.
-
-
-The ``NULL`` default value
---------------------------
-
-For string and object parameters, you can set them to ``None`` to indicate
-that there's no default.  However, that means the C variable will be
-initialized to ``Py_None``.  For convenience's sakes, there's a special
-value called ``NULL`` for just this reason: from Python's perspective it
-behaves like a default value of ``None``, but the C variable is initialized
-with ``NULL``.
-
-Expressions specified as default values
----------------------------------------
-
-The default value for a parameter can be more than just a literal value.
-It can be an entire expression, using math operators and looking up attributes
-on objects.  However, this support isn't exactly simple, because of some
-non-obvious semantics.
-
-Consider the following example:
-
-.. code-block:: none
-
-    foo: Py_ssize_t = sys.maxsize - 1
-
-``sys.maxsize`` can have different values on different platforms.  Therefore
-Argument Clinic can't simply evaluate that expression locally and hard-code it
-in C.  So it stores the default in such a way that it will get evaluated at
-runtime, when the user asks for the function's signature.
-
-What namespace is available when the expression is evaluated?  It's evaluated
-in the context of the module the builtin came from.  So, if your module has an
-attribute called "``max_widgets``", you may simply use it:
-
-.. code-block:: none
-
-    foo: Py_ssize_t = max_widgets
-
-If the symbol isn't found in the current module, it fails over to looking in
-``sys.modules``.  That's how it can find ``sys.maxsize`` for example.  (Since you
-don't know in advance what modules the user will load into their interpreter,
-it's best to restrict yourself to modules that are preloaded by Python itself.)
-
-Evaluating default values only at runtime means Argument Clinic can't compute
-the correct equivalent C default value.  So you need to tell it explicitly.
-When you use an expression, you must also specify the equivalent expression
-in C, using the ``c_default`` parameter to the converter:
-
-.. code-block:: none
-
-    foo: Py_ssize_t(c_default="PY_SSIZE_T_MAX - 1") = sys.maxsize - 1
-
-Another complication: Argument Clinic can't know in advance whether or not the
-expression you supply is valid.  It parses it to make sure it looks legal, but
-it can't *actually* know.  You must be very careful when using expressions to
-specify values that are guaranteed to be valid at runtime!
-
-Finally, because expressions must be representable as static C values, there
-are many restrictions on legal expressions.  Here's a list of Python features
-you're not permitted to use:
-
-* Function calls.
-* Inline if statements (``3 if foo else 5``).
-* Automatic sequence unpacking (``*[1, 2, 3]``).
-* List/set/dict comprehensions and generator expressions.
-* Tuple/list/set/dict literals.
-
-
-
-Using a return converter
-------------------------
-
-By default, the impl function Argument Clinic generates for you returns
-:c:type:`PyObject * <PyObject>`.
-But your C function often computes some C type,
-then converts it into the :c:type:`!PyObject *`
-at the last moment.  Argument Clinic handles converting your inputs from Python types
-into native C types—why not have it convert your return value from a native C type
-into a Python type too?
-
-That's what a "return converter" does.  It changes your impl function to return
-some C type, then adds code to the generated (non-impl) function to handle converting
-that value into the appropriate :c:type:`!PyObject *`.
-
-The syntax for return converters is similar to that of parameter converters.
-You specify the return converter like it was a return annotation on the
-function itself, using ``->`` notation.
-
-For example:
-
-.. code-block:: c
-
-   /*[clinic input]
-   add -> int
-
-       a: int
-       b: int
-       /
-
-   [clinic start generated code]*/
-
-Return converters behave much the same as parameter converters;
-they take arguments, the arguments are all keyword-only, and if you're not changing
-any of the default arguments you can omit the parentheses.
-
-(If you use both ``"as"`` *and* a return converter for your function,
-the ``"as"`` should come before the return converter.)
-
-There's one additional complication when using return converters: how do you
-indicate an error has occurred?  Normally, a function returns a valid (non-``NULL``)
-pointer for success, and ``NULL`` for failure.  But if you use an integer return converter,
-all integers are valid.  How can Argument Clinic detect an error?  Its solution: each return
-converter implicitly looks for a special value that indicates an error.  If you return
-that value, and an error has been set (``PyErr_Occurred()`` returns a true
-value), then the generated code will propagate the error.  Otherwise it will
-encode the value you return like normal.
-
-Currently Argument Clinic supports only a few return converters:
-
-.. code-block:: none
-
-    bool
-    double
-    float
-    int
-    long
-    Py_ssize_t
-    size_t
-    unsigned int
-    unsigned long
-
-None of these take parameters.
-For all of these, return ``-1`` to indicate error.
-
-To see all the return converters Argument Clinic supports, along with
-their parameters (if any),
-just run ``Tools/clinic/clinic.py --converters`` for the full list.
-
-
-Cloning existing functions
---------------------------
-
-If you have a number of functions that look similar, you may be able to
-use Clinic's "clone" feature.  When you clone an existing function,
-you reuse:
-
-* its parameters, including
-
-  * their names,
-
-  * their converters, with all parameters,
-
-  * their default values,
-
-  * their per-parameter docstrings,
-
-  * their *kind* (whether they're positional only,
-    positional or keyword, or keyword only), and
-
-* its return converter.
-
-The only thing not copied from the original function is its docstring;
-the syntax allows you to specify a new docstring.
-
-Here's the syntax for cloning a function::
-
-    /*[clinic input]
-    module.class.new_function [as c_basename] = module.class.existing_function
-
-    Docstring for new_function goes here.
-    [clinic start generated code]*/
-
-(The functions can be in different modules or classes.  I wrote
-``module.class`` in the sample just to illustrate that you must
-use the full path to *both* functions.)
-
-Sorry, there's no syntax for partially cloning a function, or cloning a function
-then modifying it.  Cloning is an all-or nothing proposition.
-
-Also, the function you are cloning from must have been previously defined
-in the current file.
-
-Calling Python code
--------------------
-
-The rest of the advanced topics require you to write Python code
-which lives inside your C file and modifies Argument Clinic's
-runtime state.  This is simple: you simply define a Python block.
-
-A Python block uses different delimiter lines than an Argument
-Clinic function block.  It looks like this::
-
-    /*[python input]
-    # python code goes here
-    [python start generated code]*/
-
-All the code inside the Python block is executed at the
-time it's parsed.  All text written to stdout inside the block
-is redirected into the "output" after the block.
-
-As an example, here's a Python block that adds a static integer
-variable to the C code::
-
-    /*[python input]
-    print('static int __ignored_unused_variable__ = 0;')
-    [python start generated code]*/
-    static int __ignored_unused_variable__ = 0;
-    /*[python checksum:...]*/
-
-
-Using a "self converter"
-------------------------
-
-Argument Clinic automatically adds a "self" parameter for you
-using a default converter.  It automatically sets the ``type``
-of this parameter to the "pointer to an instance" you specified
-when you declared the type.  However, you can override
-Argument Clinic's converter and specify one yourself.
-Just add your own ``self`` parameter as the first parameter in a
-block, and ensure that its converter is an instance of
-``self_converter`` or a subclass thereof.
-
-What's the point?  This lets you override the type of ``self``,
-or give it a different default name.
-
-How do you specify the custom type you want to cast ``self`` to?
-If you only have one or two functions with the same type for ``self``,
-you can directly use Argument Clinic's existing ``self`` converter,
-passing in the type you want to use as the ``type`` parameter::
-
-    /*[clinic input]
-
-    _pickle.Pickler.dump
-
-      self: self(type="PicklerObject *")
-      obj: object
-      /
-
-    Write a pickled representation of the given object to the open file.
-    [clinic start generated code]*/
-
-On the other hand, if you have a lot of functions that will use the same
-type for ``self``, it's best to create your own converter, subclassing
-``self_converter`` but overwriting the ``type`` member::
-
-    /*[python input]
-    class PicklerObject_converter(self_converter):
-        type = "PicklerObject *"
-    [python start generated code]*/
-
-    /*[clinic input]
-
-    _pickle.Pickler.dump
-
-      self: PicklerObject
-      obj: object
-      /
-
-    Write a pickled representation of the given object to the open file.
-    [clinic start generated code]*/
-
-
-Using a "defining class" converter
-----------------------------------
-
-Argument Clinic facilitates gaining access to the defining class of a method.
-This is useful for :ref:`heap type <heap-types>` methods that need to fetch
-module level state.  Use :c:func:`PyType_FromModuleAndSpec` to associate a new
-heap type with a module.  You can now use :c:func:`PyType_GetModuleState` on
-the defining class to fetch the module state, for example from a module method.
-
-Example from ``Modules/zlibmodule.c``.  First, ``defining_class`` is added to
-the clinic input::
-
-    /*[clinic input]
-    zlib.Compress.compress
-
-      cls: defining_class
-      data: Py_buffer
-        Binary data to be compressed.
-      /
-
-
-After running the Argument Clinic tool, the following function signature is
-generated::
-
-    /*[clinic start generated code]*/
-    static PyObject *
-    zlib_Compress_compress_impl(compobject *self, PyTypeObject *cls,
-                                Py_buffer *data)
-    /*[clinic end generated code: output=6731b3f0ff357ca6 input=04d00f65ab01d260]*/
-
-
-The following code can now use ``PyType_GetModuleState(cls)`` to fetch the
-module state::
-
-    zlibstate *state = PyType_GetModuleState(cls);
-
-
-Each method may only have one argument using this converter, and it must appear
-after ``self``, or, if ``self`` is not used, as the first argument.  The argument
-will be of type ``PyTypeObject *``.  The argument will not appear in the
-``__text_signature__``.
-
-The ``defining_class`` converter is not compatible with ``__init__`` and ``__new__``
-methods, which cannot use the ``METH_METHOD`` convention.
-
-It is not possible to use ``defining_class`` with slot methods.  In order to
-fetch the module state from such methods, use :c:func:`PyType_GetModuleByDef`
-to look up the module and then :c:func:`PyModule_GetState` to fetch the module
-state.  Example from the ``setattro`` slot method in
-``Modules/_threadmodule.c``::
-
-    static int
-    local_setattro(localobject *self, PyObject *name, PyObject *v)
-    {
-        PyObject *module = PyType_GetModuleByDef(Py_TYPE(self), &thread_module);
-        thread_module_state *state = get_thread_state(module);
-        ...
-    }
-
-
-See also :pep:`573`.
-
-
-Writing a custom converter
---------------------------
-
-As we hinted at in the previous section... you can write your own converters!
-A converter is simply a Python class that inherits from ``CConverter``.
-The main purpose of a custom converter is if you have a parameter using
-the ``O&`` format unit—parsing this parameter means calling
-a :c:func:`PyArg_ParseTuple` "converter function".
-
-Your converter class should be named ``*something*_converter``.
-If the name follows this convention, then your converter class
-will be automatically registered with Argument Clinic; its name
-will be the name of your class with the ``_converter`` suffix
-stripped off.  (This is accomplished with a metaclass.)
-
-You shouldn't subclass ``CConverter.__init__``.  Instead, you should
-write a ``converter_init()`` function.  ``converter_init()``
-always accepts a ``self`` parameter; after that, all additional
-parameters *must* be keyword-only.  Any arguments passed in to
-the converter in Argument Clinic will be passed along to your
-``converter_init()``.
-
-There are some additional members of ``CConverter`` you may wish
-to specify in your subclass.  Here's the current list:
-
-``type``
-    The C type to use for this variable.
-    ``type`` should be a Python string specifying the type, e.g. ``int``.
-    If this is a pointer type, the type string should end with ``' *'``.
-
-``default``
-    The Python default value for this parameter, as a Python value.
-    Or the magic value ``unspecified`` if there is no default.
-
-``py_default``
-    ``default`` as it should appear in Python code,
-    as a string.
-    Or ``None`` if there is no default.
-
-``c_default``
-    ``default`` as it should appear in C code,
-    as a string.
-    Or ``None`` if there is no default.
-
-``c_ignored_default``
-    The default value used to initialize the C variable when
-    there is no default, but not specifying a default may
-    result in an "uninitialized variable" warning.  This can
-    easily happen when using option groups—although
-    properly written code will never actually use this value,
-    the variable does get passed in to the impl, and the
-    C compiler will complain about the "use" of the
-    uninitialized value.  This value should always be a
-    non-empty string.
-
-``converter``
-    The name of the C converter function, as a string.
-
-``impl_by_reference``
-    A boolean value.  If true,
-    Argument Clinic will add a ``&`` in front of the name of
-    the variable when passing it into the impl function.
-
-``parse_by_reference``
-    A boolean value.  If true,
-    Argument Clinic will add a ``&`` in front of the name of
-    the variable when passing it into :c:func:`PyArg_ParseTuple`.
-
-
-Here's the simplest example of a custom converter, from ``Modules/zlibmodule.c``::
-
-    /*[python input]
-
-    class ssize_t_converter(CConverter):
-        type = 'Py_ssize_t'
-        converter = 'ssize_t_converter'
-
-    [python start generated code]*/
-    /*[python end generated code: output=da39a3ee5e6b4b0d input=35521e4e733823c7]*/
-
-This block adds a converter to Argument Clinic named ``ssize_t``.  Parameters
-declared as ``ssize_t`` will be declared as type :c:type:`Py_ssize_t`, and will
-be parsed by the ``'O&'`` format unit, which will call the
-``ssize_t_converter`` converter function.  ``ssize_t`` variables
-automatically support default values.
-
-More sophisticated custom converters can insert custom C code to
-handle initialization and cleanup.
-You can see more examples of custom converters in the CPython
-source tree; grep the C files for the string ``CConverter``.
-
-Writing a custom return converter
----------------------------------
-
-Writing a custom return converter is much like writing
-a custom converter.  Except it's somewhat simpler, because return
-converters are themselves much simpler.
-
-Return converters must subclass ``CReturnConverter``.
-There are no examples yet of custom return converters,
-because they are not widely used yet.  If you wish to
-write your own return converter, please read ``Tools/clinic/clinic.py``,
-specifically the implementation of ``CReturnConverter`` and
-all its subclasses.
-
-METH_O and METH_NOARGS
-----------------------------------------------
-
-To convert a function using ``METH_O``, make sure the function's
-single argument is using the ``object`` converter, and mark the
-arguments as positional-only::
-
-    /*[clinic input]
-    meth_o_sample
-
-         argument: object
-         /
-    [clinic start generated code]*/
-
-
-To convert a function using ``METH_NOARGS``, just don't specify
-any arguments.
-
-You can still use a self converter, a return converter, and specify
-a ``type`` argument to the object converter for ``METH_O``.
-
-tp_new and tp_init functions
-----------------------------------------------
-
-You can convert ``tp_new`` and ``tp_init`` functions.  Just name
-them ``__new__`` or ``__init__`` as appropriate.  Notes:
-
-* The function name generated for ``__new__`` doesn't end in ``__new__``
-  like it would by default.  It's just the name of the class, converted
-  into a valid C identifier.
-
-* No ``PyMethodDef`` ``#define`` is generated for these functions.
-
-* ``__init__`` functions return ``int``, not ``PyObject *``.
-
-* Use the docstring as the class docstring.
-
-* Although ``__new__`` and ``__init__`` functions must always
-  accept both the ``args`` and ``kwargs`` objects, when converting
-  you may specify any signature for these functions that you like.
-  (If your function doesn't support keywords, the parsing function
-  generated will throw an exception if it receives any.)
-
-Changing and redirecting Clinic's output
-----------------------------------------
-
-It can be inconvenient to have Clinic's output interspersed with
-your conventional hand-edited C code.  Luckily, Clinic is configurable:
-you can buffer up its output for printing later (or earlier!), or write
-its output to a separate file.  You can also add a prefix or suffix to
-every line of Clinic's generated output.
-
-While changing Clinic's output in this manner can be a boon to readability,
-it may result in Clinic code using types before they are defined, or
-your code attempting to use Clinic-generated code before it is defined.
-These problems can be easily solved by rearranging the declarations in your file,
-or moving where Clinic's generated code goes.  (This is why the default behavior
-of Clinic is to output everything into the current block; while many people
-consider this hampers readability, it will never require rearranging your
-code to fix definition-before-use problems.)
-
-Let's start with defining some terminology:
-
-*field*
-  A field, in this context, is a subsection of Clinic's output.
-  For example, the ``#define`` for the ``PyMethodDef`` structure
-  is a field, called ``methoddef_define``.  Clinic has seven
-  different fields it can output per function definition:
-
-  .. code-block:: none
-
-      docstring_prototype
-      docstring_definition
-      methoddef_define
-      impl_prototype
-      parser_prototype
-      parser_definition
-      impl_definition
-
-  All the names are of the form ``"<a>_<b>"``,
-  where ``"<a>"`` is the semantic object represented (the parsing function,
-  the impl function, the docstring, or the methoddef structure) and ``"<b>"``
-  represents what kind of statement the field is.  Field names that end in
-  ``"_prototype"``
-  represent forward declarations of that thing, without the actual body/data
-  of the thing; field names that end in ``"_definition"`` represent the actual
-  definition of the thing, with the body/data of the thing.  (``"methoddef"``
-  is special, it's the only one that ends with ``"_define"``, representing that
-  it's a preprocessor #define.)
-
-*destination*
-  A destination is a place Clinic can write output to.  There are
-  five built-in destinations:
-
-  ``block``
-    The default destination: printed in the output section of
-    the current Clinic block.
-
-  ``buffer``
-    A text buffer where you can save text for later.  Text sent
-    here is appended to the end of any existing text.  It's an
-    error to have any text left in the buffer when Clinic finishes
-    processing a file.
-
-  ``file``
-    A separate "clinic file" that will be created automatically by Clinic.
-    The filename chosen for the file is ``{basename}.clinic{extension}``,
-    where ``basename`` and ``extension`` were assigned the output
-    from ``os.path.splitext()`` run on the current file.  (Example:
-    the ``file`` destination for ``_pickle.c`` would be written to
-    ``_pickle.clinic.c``.)
-
-    **Important: When using a** ``file`` **destination, you**
-    *must check in* **the generated file!**
-
-  ``two-pass``
-    A buffer like ``buffer``.  However, a two-pass buffer can only
-    be dumped once, and it prints out all text sent to it during
-    all processing, even from Clinic blocks *after* the dumping point.
-
-  ``suppress``
-    The text is suppressed—thrown away.
-
-
-Clinic defines five new directives that let you reconfigure its output.
-
-The first new directive is ``dump``:
-
-.. code-block:: none
-
-   dump <destination>
-
-This dumps the current contents of the named destination into the output of
-the current block, and empties it.  This only works with ``buffer`` and
-``two-pass`` destinations.
-
-The second new directive is ``output``.  The most basic form of ``output``
-is like this:
-
-.. code-block:: none
-
-    output <field> <destination>
-
-This tells Clinic to output *field* to *destination*.  ``output`` also
-supports a special meta-destination, called ``everything``, which tells
-Clinic to output *all* fields to that *destination*.
-
-``output`` has a number of other functions:
-
-.. code-block:: none
-
-    output push
-    output pop
-    output preset <preset>
-
-
-``output push`` and ``output pop`` allow you to push and pop
-configurations on an internal configuration stack, so that you
-can temporarily modify the output configuration, then easily restore
-the previous configuration.  Simply push before your change to save
-the current configuration, then pop when you wish to restore the
-previous configuration.
-
-``output preset`` sets Clinic's output to one of several built-in
-preset configurations, as follows:
-
-  ``block``
-    Clinic's original starting configuration.  Writes everything
-    immediately after the input block.
-
-    Suppress the ``parser_prototype``
-    and ``docstring_prototype``, write everything else to ``block``.
-
-  ``file``
-    Designed to write everything to the "clinic file" that it can.
-    You then ``#include`` this file near the top of your file.
-    You may need to rearrange your file to make this work, though
-    usually this just means creating forward declarations for various
-    ``typedef`` and ``PyTypeObject`` definitions.
-
-    Suppress the ``parser_prototype``
-    and ``docstring_prototype``, write the ``impl_definition`` to
-    ``block``, and write everything else to ``file``.
-
-    The default filename is ``"{dirname}/clinic/{basename}.h"``.
-
-  ``buffer``
-    Save up most of the output from Clinic, to be written into
-    your file near the end.  For Python files implementing modules
-    or builtin types, it's recommended that you dump the buffer
-    just above the static structures for your module or
-    builtin type; these are normally very near the end.  Using
-    ``buffer`` may require even more editing than ``file``, if
-    your file has static ``PyMethodDef`` arrays defined in the
-    middle of the file.
-
-    Suppress the ``parser_prototype``, ``impl_prototype``,
-    and ``docstring_prototype``, write the ``impl_definition`` to
-    ``block``, and write everything else to ``file``.
-
-  ``two-pass``
-    Similar to the ``buffer`` preset, but writes forward declarations to
-    the ``two-pass`` buffer, and definitions to the ``buffer``.
-    This is similar to the ``buffer`` preset, but may require
-    less editing than ``buffer``.  Dump the ``two-pass`` buffer
-    near the top of your file, and dump the ``buffer`` near
-    the end just like you would when using the ``buffer`` preset.
-
-    Suppresses the ``impl_prototype``, write the ``impl_definition``
-    to ``block``, write ``docstring_prototype``, ``methoddef_define``,
-    and ``parser_prototype`` to ``two-pass``, write everything else
-    to ``buffer``.
-
-  ``partial-buffer``
-    Similar to the ``buffer`` preset, but writes more things to ``block``,
-    only writing the really big chunks of generated code to ``buffer``.
-    This avoids the definition-before-use problem of ``buffer`` completely,
-    at the small cost of having slightly more stuff in the block's output.
-    Dump the ``buffer`` near the end, just like you would when using
-    the ``buffer`` preset.
-
-    Suppresses the ``impl_prototype``, write the ``docstring_definition``
-    and ``parser_definition`` to ``buffer``, write everything else to ``block``.
-
-The third new directive is ``destination``:
-
-.. code-block:: none
-
-    destination <name> <command> [...]
-
-This performs an operation on the destination named ``name``.
-
-There are two defined subcommands: ``new`` and ``clear``.
-
-The ``new`` subcommand works like this:
-
-.. code-block:: none
-
-    destination <name> new <type>
-
-This creates a new destination with name ``<name>`` and type ``<type>``.
-
-There are five destination types:
-
-    ``suppress``
-        Throws the text away.
-
-    ``block``
-        Writes the text to the current block.  This is what Clinic
-        originally did.
-
-    ``buffer``
-        A simple text buffer, like the "buffer" builtin destination above.
-
-    ``file``
-        A text file.  The file destination takes an extra argument,
-        a template to use for building the filename, like so:
-
-            destination <name> new <type> <file_template>
-
-        The template can use three strings internally that will be replaced
-        by bits of the filename:
-
-            {path}
-                The full path to the file, including directory and full filename.
-            {dirname}
-                The name of the directory the file is in.
-            {basename}
-                Just the name of the file, not including the directory.
-            {basename_root}
-                Basename with the extension clipped off
-                (everything up to but not including the last '.').
-            {basename_extension}
-                The last '.' and everything after it.  If the basename
-                does not contain a period, this will be the empty string.
-
-        If there are no periods in the filename, {basename} and {filename}
-        are the same, and {extension} is empty.  "{basename}{extension}"
-        is always exactly the same as "{filename}"."
-
-    ``two-pass``
-        A two-pass buffer, like the "two-pass" builtin destination above.
-
-
-The ``clear`` subcommand works like this:
-
-.. code-block:: none
-
-    destination <name> clear
-
-It removes all the accumulated text up to this point in the destination.
-(I don't know what you'd need this for, but I thought maybe it'd be
-useful while someone's experimenting.)
-
-The fourth new directive is ``set``:
-
-.. code-block:: none
-
-    set line_prefix "string"
-    set line_suffix "string"
-
-``set`` lets you set two internal variables in Clinic.
-``line_prefix`` is a string that will be prepended to every line of Clinic's output;
-``line_suffix`` is a string that will be appended to every line of Clinic's output.
-
-Both of these support two format strings:
-
-  ``{block comment start}``
-    Turns into the string ``/*``, the start-comment text sequence for C files.
-
-  ``{block comment end}``
-    Turns into the string ``*/``, the end-comment text sequence for C files.
-
-The final new directive is one you shouldn't need to use directly,
-called ``preserve``:
-
-.. code-block:: none
-
-    preserve
-
-This tells Clinic that the current contents of the output should be kept, unmodified.
-This is used internally by Clinic when dumping output into ``file`` files; wrapping
-it in a Clinic block lets Clinic use its existing checksum functionality to ensure
-the file was not modified by hand before it gets overwritten.
-
-
-The #ifdef trick
-----------------------------------------------
-
-If you're converting a function that isn't available on all platforms,
-there's a trick you can use to make life a little easier.  The existing
-code probably looks like this::
-
-    #ifdef HAVE_FUNCTIONNAME
-    static module_functionname(...)
-    {
-    ...
-    }
-    #endif /* HAVE_FUNCTIONNAME */
-
-And then in the ``PyMethodDef`` structure at the bottom the existing code
-will have:
-
-.. code-block:: none
-
-    #ifdef HAVE_FUNCTIONNAME
-    {'functionname', ... },
-    #endif /* HAVE_FUNCTIONNAME */
-
-In this scenario, you should enclose the body of your impl function inside the ``#ifdef``,
-like so::
-
-    #ifdef HAVE_FUNCTIONNAME
-    /*[clinic input]
-    module.functionname
-    ...
-    [clinic start generated code]*/
-    static module_functionname(...)
-    {
-    ...
-    }
-    #endif /* HAVE_FUNCTIONNAME */
-
-Then, remove those three lines from the ``PyMethodDef`` structure,
-replacing them with the macro Argument Clinic generated:
-
-.. code-block:: none
-
-    MODULE_FUNCTIONNAME_METHODDEF
-
-(You can find the real name for this macro inside the generated code.
-Or you can calculate it yourself: it's the name of your function as defined
-on the first line of your block, but with periods changed to underscores,
-uppercased, and ``"_METHODDEF"`` added to the end.)
-
-Perhaps you're wondering: what if ``HAVE_FUNCTIONNAME`` isn't defined?
-The ``MODULE_FUNCTIONNAME_METHODDEF`` macro won't be defined either!
-
-Here's where Argument Clinic gets very clever.  It actually detects that the
-Argument Clinic block might be deactivated by the ``#ifdef``.  When that
-happens, it generates a little extra code that looks like this::
-
-    #ifndef MODULE_FUNCTIONNAME_METHODDEF
-        #define MODULE_FUNCTIONNAME_METHODDEF
-    #endif /* !defined(MODULE_FUNCTIONNAME_METHODDEF) */
-
-That means the macro always works.  If the function is defined, this turns
-into the correct structure, including the trailing comma.  If the function is
-undefined, this turns into nothing.
-
-However, this causes one ticklish problem: where should Argument Clinic put this
-extra code when using the "block" output preset?  It can't go in the output block,
-because that could be deactivated by the ``#ifdef``.  (That's the whole point!)
-
-In this situation, Argument Clinic writes the extra code to the "buffer" destination.
-This may mean that you get a complaint from Argument Clinic:
-
-.. code-block:: none
-
-    Warning in file "Modules/posixmodule.c" on line 12357:
-    Destination buffer 'buffer' not empty at end of file, emptying.
-
-When this happens, just open your file, find the ``dump buffer`` block that
-Argument Clinic added to your file (it'll be at the very bottom), then
-move it above the ``PyMethodDef`` structure where that macro is used.
-
-
-
-Using Argument Clinic in Python files
--------------------------------------
-
-It's actually possible to use Argument Clinic to preprocess Python files.
-There's no point to using Argument Clinic blocks, of course, as the output
-wouldn't make any sense to the Python interpreter.  But using Argument Clinic
-to run Python blocks lets you use Python as a Python preprocessor!
-
-Since Python comments are different from C comments, Argument Clinic
-blocks embedded in Python files look slightly different.  They look like this:
-
-.. code-block:: python3
-
-    #/*[python input]
-    #print("def foo(): pass")
-    #[python start generated code]*/
-    def foo(): pass
-    #/*[python checksum:...]*/
+   The Argument Clinic How-TO has been moved to the `Python Developer's Guide
+   <https://devguide.python.org/development-tools/clinic/>`__.
diff --git a/Doc/howto/curses.rst b/Doc/howto/curses.rst
index a3068d86d85bc4..4828e2fa29bd24 100644
--- a/Doc/howto/curses.rst
+++ b/Doc/howto/curses.rst
@@ -527,7 +527,7 @@ If you're in doubt about the detailed behavior of the curses
 functions, consult the manual pages for your curses implementation,
 whether it's ncurses or a proprietary Unix vendor's.  The manual pages
 will document any quirks, and provide complete lists of all the
-functions, attributes, and :const:`ACS_\*` characters available to
+functions, attributes, and :ref:`ACS_\* <curses-acs-codes>` characters available to
 you.
 
 Because the curses API is so large, some functions aren't supported in
diff --git a/Doc/howto/descriptor.rst b/Doc/howto/descriptor.rst
index 3688c47f0d6ec9..f732aaea729d40 100644
--- a/Doc/howto/descriptor.rst
+++ b/Doc/howto/descriptor.rst
@@ -521,11 +521,11 @@ everyday Python programs.
 Descriptor protocol
 -------------------
 
-``descr.__get__(self, obj, type=None) -> value``
+``descr.__get__(self, obj, type=None)``
 
-``descr.__set__(self, obj, value) -> None``
+``descr.__set__(self, obj, value)``
 
-``descr.__delete__(self, obj) -> None``
+``descr.__delete__(self, obj)``
 
 That is all there is to it.  Define any of these methods and an object is
 considered a descriptor and can override default behavior upon being looked up
@@ -779,8 +779,8 @@ by a search through the class's :term:`method resolution order`.
 
 If a descriptor is found, it is invoked with ``desc.__get__(None, A)``.
 
-The full C implementation can be found in :c:func:`type_getattro()` and
-:c:func:`_PyType_Lookup()` in :source:`Objects/typeobject.c`.
+The full C implementation can be found in :c:func:`!type_getattro` and
+:c:func:`!_PyType_Lookup` in :source:`Objects/typeobject.c`.
 
 
 Invocation from super
@@ -794,7 +794,7 @@ for the base class ``B`` immediately following ``A`` and then returns
 ``B.__dict__['m'].__get__(obj, A)``.  If not a descriptor, ``m`` is returned
 unchanged.
 
-The full C implementation can be found in :c:func:`super_getattro()` in
+The full C implementation can be found in :c:func:`!super_getattro` in
 :source:`Objects/typeobject.c`.  A pure Python equivalent can be found in
 `Guido's Tutorial
 <https://www.python.org/download/releases/2.2.3/descrintro/#cooperation>`_.
@@ -836,8 +836,8 @@ and if they define :meth:`__set_name__`, that method is called with two
 arguments.  The *owner* is the class where the descriptor is used, and the
 *name* is the class variable the descriptor was assigned to.
 
-The implementation details are in :c:func:`type_new()` and
-:c:func:`set_names()` in :source:`Objects/typeobject.c`.
+The implementation details are in :c:func:`!type_new` and
+:c:func:`!set_names` in :source:`Objects/typeobject.c`.
 
 Since the update logic is in :meth:`type.__new__`, notifications only take
 place at the time of class creation.  If descriptors are added to the class
@@ -943,6 +943,10 @@ it can be updated:
     >>> Movie('Star Wars').director
     'J.J. Abrams'
 
+.. testcleanup::
+
+   conn.close()
+
 
 Pure Python Equivalents
 ^^^^^^^^^^^^^^^^^^^^^^^
@@ -1009,17 +1013,23 @@ here is a pure Python equivalent:
             if obj is None:
                 return self
             if self.fget is None:
-                raise AttributeError(f"property '{self._name}' has no getter")
+                raise AttributeError(
+                    f'property {self._name!r} of {type(obj).__name__!r} object has no getter'
+                 )
             return self.fget(obj)
 
         def __set__(self, obj, value):
             if self.fset is None:
-                raise AttributeError(f"property '{self._name}' has no setter")
+                raise AttributeError(
+                    f'property {self._name!r} of {type(obj).__name__!r} object has no setter'
+                 )
             self.fset(obj, value)
 
         def __delete__(self, obj):
             if self.fdel is None:
-                raise AttributeError(f"property '{self._name}' has no deleter")
+                raise AttributeError(
+                    f'property {self._name!r} of {type(obj).__name__!r} object has no deleter'
+                 )
             self.fdel(obj)
 
         def getter(self, fget):
@@ -1050,6 +1060,11 @@ here is a pure Python equivalent:
         def delx(self):
             del self.__x
         x = Property(getx, setx, delx, "I'm the 'x' property.")
+        no_getter = Property(None, setx, delx, "I'm the 'x' property.")
+        no_setter = Property(getx, None, delx, "I'm the 'x' property.")
+        no_deleter = Property(getx, setx, None, "I'm the 'x' property.")
+        no_doc = Property(getx, setx, delx, None)
+
 
     # Now do it again but use the decorator style
 
@@ -1088,6 +1103,32 @@ here is a pure Python equivalent:
     >>> hasattr(ccc, 'x')
     False
 
+    >>> cc = CC()
+    >>> cc.x = 33
+    >>> try:
+    ...     cc.no_getter
+    ... except AttributeError as e:
+    ...     e.args[0]
+    ...
+    "property 'no_getter' of 'CC' object has no getter"
+
+    >>> try:
+    ...     cc.no_setter = 33
+    ... except AttributeError as e:
+    ...     e.args[0]
+    ...
+    "property 'no_setter' of 'CC' object has no setter"
+
+    >>> try:
+    ...     del cc.no_deleter
+    ... except AttributeError as e:
+    ...     e.args[0]
+    ...
+    "property 'no_deleter' of 'CC' object has no deleter"
+
+    >>> CC.no_doc.__doc__ is None
+    True
+
 The :func:`property` builtin helps whenever a user interface has granted
 attribute access and then subsequent changes require the intervention of a
 method.
@@ -1141,6 +1182,16 @@ roughly equivalent to:
             obj = self.__self__
             return func(obj, *args, **kwargs)
 
+        def __getattribute__(self, name):
+            "Emulate method_getset() in Objects/classobject.c"
+            if name == '__doc__':
+                return self.__func__.__doc__
+            return object.__getattribute__(self, name)
+
+        def __getattr__(self, name):
+            "Emulate method_getattro() in Objects/classobject.c"
+            return getattr(self.__func__, name)
+
 To support automatic creation of methods, functions include the
 :meth:`__get__` method for binding methods during attribute access.  This
 means that functions are non-data descriptors that return bound methods
@@ -1420,10 +1471,6 @@ Using the non-data descriptor protocol, a pure Python version of
         def __get__(self, obj, cls=None):
             if cls is None:
                 cls = type(obj)
-            if hasattr(type(self.f), '__get__'):
-                # This code path was added in Python 3.9
-                # and was deprecated in Python 3.11.
-                return self.f.__get__(cls, cls)
             return MethodType(self.f, cls)
 
 .. testcode::
@@ -1436,11 +1483,6 @@ Using the non-data descriptor protocol, a pure Python version of
             "Class method that returns a tuple"
             return (cls.__name__, x, y)
 
-        @ClassMethod
-        @property
-        def __doc__(cls):
-            return f'A doc for {cls.__name__!r}'
-
 
 .. doctest::
     :hide:
@@ -1453,10 +1495,6 @@ Using the non-data descriptor protocol, a pure Python version of
     >>> t.cm(11, 22)
     ('T', 11, 22)
 
-    # Check the alternate path for chained descriptors
-    >>> T.__doc__
-    "A doc for 'T'"
-
     # Verify that T uses our emulation
     >>> type(vars(T)['cm']).__name__
     'ClassMethod'
@@ -1481,24 +1519,6 @@ Using the non-data descriptor protocol, a pure Python version of
     ('T', 11, 22)
 
 
-The code path for ``hasattr(type(self.f), '__get__')`` was added in
-Python 3.9 and makes it possible for :func:`classmethod` to support
-chained decorators.  For example, a classmethod and property could be
-chained together.  In Python 3.11, this functionality was deprecated.
-
-.. testcode::
-
-    class G:
-        @classmethod
-        @property
-        def __doc__(cls):
-            return f'A doc for {cls.__name__!r}'
-
-.. doctest::
-
-    >>> G.__doc__
-    "A doc for 'G'"
-
 The :func:`functools.update_wrapper` call in ``ClassMethod`` adds a
 ``__wrapped__`` attribute that refers to the underlying function.  Also
 it carries forward the attributes necessary to make the wrapper look
diff --git a/Doc/howto/enum.rst b/Doc/howto/enum.rst
index 68b75c529e92c7..1e9ac9b6761b64 100644
--- a/Doc/howto/enum.rst
+++ b/Doc/howto/enum.rst
@@ -426,10 +426,17 @@ enumeration, with the exception of special methods (:meth:`__str__`,
 :meth:`__add__`, etc.), descriptors (methods are also descriptors), and
 variable names listed in :attr:`_ignore_`.
 
-Note:  if your enumeration defines :meth:`__new__` and/or :meth:`__init__` then
+Note:  if your enumeration defines :meth:`__new__` and/or :meth:`__init__`,
 any value(s) given to the enum member will be passed into those methods.
 See `Planet`_ for an example.
 
+.. note::
+
+    The :meth:`__new__` method, if defined, is used during creation of the Enum
+    members; it is then replaced by Enum's :meth:`__new__` which is used after
+    class creation for lookup of existing members.  See :ref:`new-vs-init` for
+    more details.
+
 
 Restricted Enum subclassing
 ---------------------------
@@ -476,6 +483,7 @@ Dataclass support
 When inheriting from a :class:`~dataclasses.dataclass`,
 the :meth:`~Enum.__repr__` omits the inherited class' name.  For example::
 
+    >>> from dataclasses import dataclass, field
     >>> @dataclass
     ... class CreatureDataMixin:
     ...     size: str
@@ -517,7 +525,17 @@ from that module.
     nested in other classes.
 
 It is possible to modify how enum members are pickled/unpickled by defining
-:meth:`__reduce_ex__` in the enumeration class.
+:meth:`__reduce_ex__` in the enumeration class.  The default method is by-value,
+but enums with complicated values may want to use by-name::
+
+    >>> import enum
+    >>> class MyEnum(enum.Enum):
+    ...     __reduce_ex__ = enum.pickle_by_enum_name
+
+.. note::
+
+    Using by-name for flags is not recommended, as unnamed aliases will
+    not unpickle.
 
 
 Functional API
@@ -589,9 +607,9 @@ The complete signature is::
         start=1,
         )
 
-:value: What the new enum class will record as its name.
+* *value*: What the new enum class will record as its name.
 
-:names: The enum members.  This can be a whitespace- or comma-separated string
+* *names*: The enum members.  This can be a whitespace- or comma-separated string
   (values will start at 1 unless otherwise specified)::
 
     'RED GREEN BLUE' | 'RED,GREEN,BLUE' | 'RED, GREEN, BLUE'
@@ -608,13 +626,13 @@ The complete signature is::
 
     {'CHARTREUSE': 7, 'SEA_GREEN': 11, 'ROSEMARY': 42}
 
-:module: name of module where new enum class can be found.
+* *module*: name of module where new enum class can be found.
 
-:qualname: where in module new enum class can be found.
+* *qualname*: where in module new enum class can be found.
 
-:type: type to mix in to new enum class.
+* *type*: type to mix in to new enum class.
 
-:start: number to start counting at if only names are passed in.
+* *start*: number to start counting at if only names are passed in.
 
 .. versionchanged:: 3.5
    The *start* parameter was added.
@@ -754,7 +772,7 @@ be combined with them (but may lose :class:`IntFlag` membership::
     >>> Perm.X | 4
     <Perm.R|X: 5>
 
-    >>> Perm.X | 8
+    >>> Perm.X + 8
     9
 
 .. note::
@@ -850,7 +868,7 @@ Others
 While :class:`IntEnum` is part of the :mod:`enum` module, it would be very
 simple to implement independently::
 
-    class IntEnum(int, Enum):
+    class IntEnum(int, ReprEnum):   # or Enum instead of ReprEnum
         pass
 
 This demonstrates how similar derived enumerations can be defined; for example
@@ -858,8 +876,8 @@ a :class:`FloatEnum` that mixes in :class:`float` instead of :class:`int`.
 
 Some rules:
 
-1. When subclassing :class:`Enum`, mix-in types must appear before
-   :class:`Enum` itself in the sequence of bases, as in the :class:`IntEnum`
+1. When subclassing :class:`Enum`, mix-in types must appear before the
+   :class:`Enum` class itself in the sequence of bases, as in the :class:`IntEnum`
    example above.
 2. Mix-in types must be subclassable. For example, :class:`bool` and
    :class:`range` are not subclassable and will throw an error during Enum
@@ -886,6 +904,8 @@ Some rules:
    :meth:`__str__` method has been reset to their data types'
    :meth:`__str__` method.
 
+.. _new-vs-init:
+
 When to use :meth:`__new__` vs. :meth:`__init__`
 ------------------------------------------------
 
@@ -918,6 +938,11 @@ want one of them to be the value::
     >>> print(Coordinate(3))
     Coordinate.VY
 
+.. warning::
+
+    *Do not* call ``super().__new__()``, as the lookup-only ``__new__`` is the one
+    that is found; instead, use the data type directly.
+
 
 Finer Points
 ^^^^^^^^^^^^
@@ -936,30 +961,34 @@ all the members are created it is no longer used.
 Supported ``_sunder_`` names
 """"""""""""""""""""""""""""
 
-- ``_name_`` -- name of the member
-- ``_value_`` -- value of the member; can be set / modified in ``__new__``
+- :attr:`~Enum._name_` -- name of the member
+- :attr:`~Enum._value_` -- value of the member; can be set in ``__new__``
+- :meth:`~Enum._missing_` -- a lookup function used when a value is not found;
+  may be overridden
+- :attr:`~Enum._ignore_` -- a list of names, either as a :class:`list` or a
+  :class:`str`, that will not be transformed into members, and will be removed
+  from the final class
+- :meth:`~Enum._generate_next_value_` -- used to get an appropriate value for
+  an enum member; may be overridden
+- :meth:`~Enum._add_alias_` -- adds a new name as an alias to an existing
+  member.
+- :meth:`~Enum._add_value_alias_` -- adds a new value as an alias to an
+  existing member.  See `MultiValueEnum`_ for an example.
 
-- ``_missing_`` -- a lookup function used when a value is not found; may be
-  overridden
-- ``_ignore_`` -- a list of names, either as a :class:`list` or a :class:`str`,
-  that will not be transformed into members, and will be removed from the final
-  class
-- ``_order_`` -- used in Python 2/3 code to ensure member order is consistent
-  (class attribute, removed during class creation)
-- ``_generate_next_value_`` -- used by the `Functional API`_ and by
-  :class:`auto` to get an appropriate value for an enum member; may be
-  overridden
+  .. note::
 
-.. note::
+     For standard :class:`Enum` classes the next value chosen is the highest
+     value seen incremented by one.
 
-    For standard :class:`Enum` classes the next value chosen is the last value seen
-    incremented by one.
+     For :class:`Flag` classes the next value chosen will be the next highest
+     power-of-two.
 
-    For :class:`Flag` classes the next value chosen will be the next highest
-    power-of-two, regardless of the last value seen.
+  .. versionchanged:: 3.13
+     Prior versions would use the last seen value instead of the highest value.
 
 .. versionadded:: 3.6 ``_missing_``, ``_order_``, ``_generate_next_value_``
 .. versionadded:: 3.7 ``_ignore_``
+.. versionadded:: 3.13 ``_add_alias_``, ``_add_value_alias_``
 
 To help keep Python 2 / Python 3 code in sync an :attr:`_order_` attribute can
 be provided.  It will be checked against the actual order of the enumeration
@@ -1133,13 +1162,14 @@ the following are true:
 There is a new boundary mechanism that controls how out-of-range / invalid
 bits are handled: ``STRICT``, ``CONFORM``, ``EJECT``, and ``KEEP``:
 
-  * STRICT --> raises an exception when presented with invalid values
-  * CONFORM --> discards any invalid bits
-  * EJECT --> lose Flag status and become a normal int with the given value
-  * KEEP --> keep the extra bits
-           - keeps Flag status and extra bits
-           - extra bits do not show up in iteration
-           - extra bits do show up in repr() and str()
+* STRICT --> raises an exception when presented with invalid values
+* CONFORM --> discards any invalid bits
+* EJECT --> lose Flag status and become a normal int with the given value
+* KEEP --> keep the extra bits
+
+  - keeps Flag status and extra bits
+  - extra bits do not show up in iteration
+  - extra bits do show up in repr() and str()
 
 The default for Flag is ``STRICT``, the default for ``IntFlag`` is ``EJECT``,
 and the default for ``_convert_`` is ``KEEP`` (see ``ssl.Options`` for an
@@ -1344,6 +1374,13 @@ to handle any extra arguments::
     members; it is then replaced by Enum's :meth:`__new__` which is used after
     class creation for lookup of existing members.
 
+.. warning::
+
+    *Do not* call ``super().__new__()``, as the lookup-only ``__new__`` is the one
+    that is found; instead, use the data type directly -- e.g.::
+
+       obj = int.__new__(cls, value)
+
 
 OrderedEnum
 ^^^^^^^^^^^
@@ -1404,7 +1441,7 @@ alias::
     ...     GRENE = 2
     ...
     Traceback (most recent call last):
-    ...
+      ...
     ValueError: aliases not allowed in DuplicateFreeEnum:  'GRENE' --> 'GREEN'
 
 .. note::
@@ -1414,6 +1451,29 @@ alias::
     disallowing aliases, the :func:`unique` decorator can be used instead.
 
 
+MultiValueEnum
+^^^^^^^^^^^^^^^^^
+
+Supports having more than one value per member::
+
+    >>> class MultiValueEnum(Enum):
+    ...     def __new__(cls, value, *values):
+    ...         self = object.__new__(cls)
+    ...         self._value_ = value
+    ...         for v in values:
+    ...             self._add_value_alias_(v)
+    ...         return self
+    ...
+    >>> class DType(MultiValueEnum):
+    ...     float32 = 'f', 8
+    ...     double64 = 'd', 9
+    ...
+    >>> DType('f')
+    <DType.float32: 'f'>
+    >>> DType(9)
+    <DType.double64: 'd'>
+
+
 Planet
 ^^^^^^
 
diff --git a/Doc/howto/functional.rst b/Doc/howto/functional.rst
index 5cf12cc52bde4e..b0f9d22d74f0e3 100644
--- a/Doc/howto/functional.rst
+++ b/Doc/howto/functional.rst
@@ -1072,8 +1072,8 @@ write the obvious :keyword:`for` loop::
 
 A related function is :func:`itertools.accumulate(iterable, func=operator.add)
 <itertools.accumulate>`.  It performs the same calculation, but instead of
-returning only the final result, :func:`accumulate` returns an iterator that
-also yields each partial result::
+returning only the final result, :func:`~itertools.accumulate` returns an iterator
+that also yields each partial result::
 
     itertools.accumulate([1, 2, 3, 4, 5]) =>
       1, 3, 6, 10, 15
diff --git a/Doc/howto/index.rst b/Doc/howto/index.rst
index f521276a5a83c5..a835bb5f13bd1c 100644
--- a/Doc/howto/index.rst
+++ b/Doc/howto/index.rst
@@ -28,9 +28,9 @@ Currently, the HOWTOs are:
    urllib2.rst
    argparse.rst
    ipaddress.rst
-   clinic.rst
    instrumentation.rst
    perf_profiling.rst
    annotations.rst
    isolating-extensions.rst
+   timerfd.rst
 
diff --git a/Doc/howto/instrumentation.rst b/Doc/howto/instrumentation.rst
index 4ce15c69dac90b..9c99fcecce1fcb 100644
--- a/Doc/howto/instrumentation.rst
+++ b/Doc/howto/instrumentation.rst
@@ -13,9 +13,9 @@ DTrace and SystemTap are monitoring tools, each providing a way to inspect
 what the processes on a computer system are doing.  They both use
 domain-specific languages allowing a user to write scripts which:
 
-  - filter which processes are to be observed
-  - gather data from the processes of interest
-  - generate reports on the data
+- filter which processes are to be observed
+- gather data from the processes of interest
+- generate reports on the data
 
 As of Python 3.6, CPython can be built with embedded "markers", also
 known as "probes", that can be observed by a DTrace or SystemTap script,
@@ -246,11 +246,9 @@ The output looks like this:
 
 where the columns are:
 
-  - time in microseconds since start of script
-
-  - name of executable
-
-  - PID of process
+- time in microseconds since start of script
+- name of executable
+- PID of process
 
 and the remainder indicates the call/return hierarchy as the script executes.
 
@@ -292,11 +290,11 @@ Available static markers
 
 .. object:: function__return(str filename, str funcname, int lineno)
 
-   This marker is the converse of :c:func:`function__entry`, and indicates that
+   This marker is the converse of :c:func:`!function__entry`, and indicates that
    execution of a Python function has ended (either via ``return``, or via an
    exception).  It is only triggered for pure-Python (bytecode) functions.
 
-   The arguments are the same as for :c:func:`function__entry`
+   The arguments are the same as for :c:func:`!function__entry`
 
 .. object:: line(str filename, str funcname, int lineno)
 
@@ -304,7 +302,7 @@ Available static markers
    the equivalent of line-by-line tracing with a Python profiler.  It is
    not triggered within C functions.
 
-   The arguments are the same as for :c:func:`function__entry`.
+   The arguments are the same as for :c:func:`!function__entry`.
 
 .. object:: gc__start(int generation)
 
diff --git a/Doc/howto/isolating-extensions.rst b/Doc/howto/isolating-extensions.rst
index 0262054ae2b4a0..835c0afad7c6c8 100644
--- a/Doc/howto/isolating-extensions.rst
+++ b/Doc/howto/isolating-extensions.rst
@@ -1,5 +1,7 @@
 .. highlight:: c
 
+.. _isolating-extensions-howto:
+
 ***************************
 Isolating Extension Modules
 ***************************
@@ -62,7 +64,7 @@ Enter Per-Module State
 
 Instead of focusing on per-interpreter state, Python's C API is evolving
 to better support the more granular *per-module* state.
-This means that C-level data is be attached to a *module object*.
+This means that C-level data should be attached to a *module object*.
 Each interpreter creates its own module object, keeping the data separate.
 For testing the isolation, multiple module objects corresponding to a single
 extension can even be loaded in a single interpreter.
@@ -298,10 +300,10 @@ Watch out for the following two points in particular (but note that this is not
 a comprehensive list):
 
 * Unlike static types, heap type objects are mutable by default.
-  Use the :c:data:`Py_TPFLAGS_IMMUTABLETYPE` flag to prevent mutability.
+  Use the :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` flag to prevent mutability.
 * Heap types inherit :c:member:`~PyTypeObject.tp_new` by default,
   so it may become possible to instantiate them from Python code.
-  You can prevent this with the :c:data:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag.
+  You can prevent this with the :c:macro:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag.
 
 
 Defining Heap Types
@@ -333,16 +335,48 @@ To avoid memory leaks, instances of heap types must implement the
 garbage collection protocol.
 That is, heap types should:
 
-- Have the :c:data:`Py_TPFLAGS_HAVE_GC` flag.
+- Have the :c:macro:`Py_TPFLAGS_HAVE_GC` flag.
 - Define a traverse function using ``Py_tp_traverse``, which
   visits the type (e.g. using :c:expr:`Py_VISIT(Py_TYPE(self))`).
 
-Please refer to the :ref:`the documentation <type-structs>` of
-:c:data:`Py_TPFLAGS_HAVE_GC` and :c:member:`~PyTypeObject.tp_traverse`
+Please refer to the the documentation of
+:c:macro:`Py_TPFLAGS_HAVE_GC` and :c:member:`~PyTypeObject.tp_traverse`
 for additional considerations.
 
-If your traverse function delegates to the ``tp_traverse`` of its base class
-(or another type), ensure that ``Py_TYPE(self)`` is visited only once.
+The API for defining heap types grew organically, leaving it
+somewhat awkward to use in its current state.
+The following sections will guide you through common issues.
+
+
+``tp_traverse`` in Python 3.8 and lower
+.......................................
+
+The requirement to visit the type from ``tp_traverse`` was added in Python 3.9.
+If you support Python 3.8 and lower, the traverse function must *not*
+visit the type, so it must be more complicated::
+
+   static int my_traverse(PyObject *self, visitproc visit, void *arg)
+   {
+       if (Py_Version >= 0x03090000) {
+           Py_VISIT(Py_TYPE(self));
+       }
+       return 0;
+   }
+
+Unfortunately, :c:data:`Py_Version` was only added in Python 3.11.
+As a replacement, use:
+
+* :c:macro:`PY_VERSION_HEX`, if not using the stable ABI, or
+* :py:data:`sys.version_info` (via :c:func:`PySys_GetObject` and
+  :c:func:`PyArg_ParseTuple`).
+
+
+Delegating ``tp_traverse``
+..........................
+
+If your traverse function delegates to the :c:member:`~PyTypeObject.tp_traverse`
+of its base class (or another type), ensure that ``Py_TYPE(self)`` is visited
+only once.
 Note that only heap type are expected to visit the type in ``tp_traverse``.
 
 For example, if your traverse function includes::
@@ -354,11 +388,70 @@ For example, if your traverse function includes::
     if (base->tp_flags & Py_TPFLAGS_HEAPTYPE) {
         // a heap type's tp_traverse already visited Py_TYPE(self)
     } else {
-        Py_VISIT(Py_TYPE(self));
+        if (Py_Version >= 0x03090000) {
+            Py_VISIT(Py_TYPE(self));
+        }
     }
 
-It is not necessary to handle the type's reference count in ``tp_new``
-and ``tp_clear``.
+It is not necessary to handle the type's reference count in
+:c:member:`~PyTypeObject.tp_new` and :c:member:`~PyTypeObject.tp_clear`.
+
+
+Defining ``tp_dealloc``
+.......................
+
+If your type has a custom :c:member:`~PyTypeObject.tp_dealloc` function,
+it needs to:
+
+- call :c:func:`PyObject_GC_UnTrack` before any fields are invalidated, and
+- decrement the reference count of the type.
+
+To keep the type valid while ``tp_free`` is called, the type's refcount needs
+to be decremented *after* the instance is deallocated. For example::
+
+   static void my_dealloc(PyObject *self)
+   {
+       PyObject_GC_UnTrack(self);
+       ...
+       PyTypeObject *type = Py_TYPE(self);
+       type->tp_free(self);
+       Py_DECREF(type);
+   }
+
+The default ``tp_dealloc`` function does this, so
+if your type does *not* override
+``tp_dealloc`` you don't need to add it.
+
+
+Not overriding ``tp_free``
+..........................
+
+The :c:member:`~PyTypeObject.tp_free` slot of a heap type must be set to
+:c:func:`PyObject_GC_Del`.
+This is the default; do not override it.
+
+
+Avoiding ``PyObject_New``
+.........................
+
+GC-tracked objects need to be allocated using GC-aware functions.
+
+If you use use :c:func:`PyObject_New` or :c:func:`PyObject_NewVar`:
+
+- Get and call type's :c:member:`~PyTypeObject.tp_alloc` slot, if possible.
+  That is, replace ``TYPE *o = PyObject_New(TYPE, typeobj)`` with::
+
+      TYPE *o = typeobj->tp_alloc(typeobj, 0);
+
+  Replace ``o = PyObject_NewVar(TYPE, typeobj, size)`` with the same,
+  but use size instead of the 0.
+
+- If the above is not possible (e.g. inside a custom ``tp_alloc``),
+  call :c:func:`PyObject_GC_New` or :c:func:`PyObject_GC_NewVar`::
+
+      TYPE *o = PyObject_GC_New(TYPE, typeobj);
+
+      TYPE *o = PyObject_GC_NewVar(TYPE, typeobj, size);
 
 
 Module State Access from Classes
@@ -411,7 +504,7 @@ that subclass, which may be defined in different module than yours.
           pass
 
 For a method to get its "defining class", it must use the
-:data:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS`
+:ref:`METH_METHOD | METH_FASTCALL | METH_KEYWORDS <METH_METHOD-METH_FASTCALL-METH_KEYWORDS>`
 :c:type:`calling convention <PyMethodDef>`
 and the corresponding :c:type:`PyCMethod` signature::
 
@@ -461,13 +554,13 @@ Module State Access from Slot Methods, Getters and Setters
 
    .. After adding to limited API:
 
-      If you use the :ref:`limited API <stable>,
+      If you use the :ref:`limited API <limited-c-api>`,
       you must update ``Py_LIMITED_API`` to ``0x030b0000``, losing ABI
       compatibility with earlier versions.
 
 Slot methods—the fast C equivalents for special methods, such as
 :c:member:`~PyNumberMethods.nb_add` for :py:attr:`~object.__add__` or
-:c:member:`~PyType.tp_new` for initialization—have a very simple API that
+:c:member:`~PyTypeObject.tp_new` for initialization—have a very simple API that
 doesn't allow passing in the defining class, unlike with :c:type:`PyCMethod`.
 The same goes for getters and setters defined with
 :c:type:`PyGetSetDef`.
@@ -483,14 +576,14 @@ to get the state::
         return NULL;
     }
 
-``PyType_GetModuleByDef`` works by searching the
+:c:func:`!PyType_GetModuleByDef` works by searching the
 :term:`method resolution order` (i.e. all superclasses) for the first
 superclass that has a corresponding module.
 
 .. note::
 
    In very exotic cases (inheritance chains spanning multiple modules
-   created from the same definition), ``PyType_GetModuleByDef`` might not
+   created from the same definition), :c:func:`!PyType_GetModuleByDef` might not
    return the module of the true defining class. However, it will always
    return a module with the same definition, ensuring a compatible
    C memory layout.
diff --git a/Doc/howto/logging-cookbook.rst b/Doc/howto/logging-cookbook.rst
index 6ef252d709e735..588f5a0a53ded0 100644
--- a/Doc/howto/logging-cookbook.rst
+++ b/Doc/howto/logging-cookbook.rst
@@ -761,7 +761,7 @@ printed on the console; on the server side, you should see something like:
 
 Note that there are some security issues with pickle in some scenarios. If
 these affect you, you can use an alternative serialization scheme by overriding
-the :meth:`~handlers.SocketHandler.makePickle` method and implementing your
+the :meth:`~SocketHandler.makePickle` method and implementing your
 alternative there, as well as adapting the above script to use your alternative
 serialization.
 
@@ -835,6 +835,8 @@ To test these files, do the following in a POSIX environment:
 You may need to tweak the configuration files in the unlikely event that the
 configured ports clash with something else in your test environment.
 
+.. currentmodule:: logging
+
 .. _context-info:
 
 Adding contextual information to your logging output
@@ -1546,7 +1548,7 @@ Sometimes you want to let a log file grow to a certain size, then open a new
 file and log to that. You may want to keep a certain number of these files, and
 when that many files have been created, rotate the files so that the number of
 files and the size of the files both remain bounded. For this usage pattern, the
-logging package provides a :class:`~handlers.RotatingFileHandler`::
+logging package provides a :class:`RotatingFileHandler`::
 
    import glob
    import logging
@@ -1594,6 +1596,8 @@ and each time it reaches the size limit it is renamed with the suffix
 Obviously this example sets the log length much too small as an extreme
 example.  You would want to set *maxBytes* to an appropriate value.
 
+.. currentmodule:: logging
+
 .. _format-styles:
 
 Use of alternative formatting styles
@@ -1724,7 +1728,7 @@ when (and if) the logged message is actually about to be output to a log by a
 handler. So the only slightly unusual thing which might trip you up is that the
 parentheses go around the format string and the arguments, not just the format
 string. That's because the __ notation is just syntax sugar for a constructor
-call to one of the XXXMessage classes.
+call to one of the :samp:`{XXX}Message` classes.
 
 If you prefer, you can use a :class:`LoggerAdapter` to achieve a similar effect
 to the above, as in the following example::
@@ -1840,6 +1844,7 @@ However, it should be borne in mind that each link in the chain adds run-time
 overhead to all logging operations, and the technique should only be used when
 the use of a :class:`Filter` does not provide the desired result.
 
+.. currentmodule:: logging.handlers
 
 .. _zeromq-handlers:
 
@@ -1917,6 +1922,8 @@ of queues, for example a ZeroMQ 'subscribe' socket. Here's an example::
    :ref:`A more advanced logging tutorial <logging-advanced-tutorial>`
 
 
+.. currentmodule:: logging
+
 An example dictionary-based configuration
 -----------------------------------------
 
@@ -2637,7 +2644,7 @@ when (and if) the logged message is actually about to be output to a log by a
 handler. So the only slightly unusual thing which might trip you up is that the
 parentheses go around the format string and the arguments, not just the format
 string. That’s because the __ notation is just syntax sugar for a constructor
-call to one of the ``XXXMessage`` classes shown above.
+call to one of the :samp:`{XXX}Message` classes shown above.
 
 
 .. _filters-dictconfig:
@@ -3918,8 +3925,8 @@ that in other languages such as Java and C#, loggers are often static class
 attributes. However, this pattern doesn't make sense in Python, where the
 module (and not the class) is the unit of software decomposition.
 
-Adding handlers other than :class:`NullHandler` to a logger in a library
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Adding handlers other than :class:`~logging.NullHandler` to a logger in a library
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Configuring logging by adding handlers, formatters and filters is the
 responsibility of the application developer, not the library developer. If you
diff --git a/Doc/howto/logging.rst b/Doc/howto/logging.rst
index a72e9a820ef347..7330cf675baa36 100644
--- a/Doc/howto/logging.rst
+++ b/Doc/howto/logging.rst
@@ -979,7 +979,7 @@ provided:
 
 #. :class:`NullHandler` instances do nothing with error messages. They are used
    by library developers who want to use logging, but want to avoid the 'No
-   handlers could be found for logger XXX' message which can be displayed if
+   handlers could be found for logger *XXX*' message which can be displayed if
    the library user has not configured logging. See :ref:`library-config` for
    more information.
 
diff --git a/Doc/howto/perf_profiling.rst b/Doc/howto/perf_profiling.rst
index 6af5536166f58a..bb1c00e0aa51d5 100644
--- a/Doc/howto/perf_profiling.rst
+++ b/Doc/howto/perf_profiling.rst
@@ -24,7 +24,7 @@ functions to appear in the output of the ``perf`` profiler. When this mode is
 enabled, the interpreter will interpose a small piece of code compiled on the
 fly before the execution of every Python function and it will teach ``perf`` the
 relationship between this piece of code and the associated Python function using
-`perf map files`_.
+:doc:`perf map files <../c-api/perfmaps>`.
 
 .. note::
 
@@ -97,7 +97,7 @@ Then we can use ``perf report`` to analyze the data:
                             |          |          |                     |          |          |--2.97%--_PyObject_Malloc
     ...
 
-As you can see, the Python functions are not shown in the output, only ``_Py_Eval_EvalFrameDefault``
+As you can see, the Python functions are not shown in the output, only ``_PyEval_EvalFrameDefault``
 (the function that evaluates the Python bytecode) shows up. Unfortunately that's not very useful because all Python
 functions use the same C function to evaluate bytecode so we cannot know which Python function corresponds to which
 bytecode-evaluating function.
@@ -162,8 +162,7 @@ the :option:`!-X` option takes precedence over the environment variable.
 
 Example, using the environment variable::
 
-   $ PYTHONPERFSUPPORT=1
-   $ python script.py
+   $ PYTHONPERFSUPPORT=1 python script.py
    $ perf report -g -i perf.data
 
 Example, using the :option:`!-X` option::
@@ -206,5 +205,3 @@ You can check if your system has been compiled with this flag by running::
 If you don't see any output it means that your interpreter has not been compiled with
 frame pointers and therefore it may not be able to show Python functions in the output
 of ``perf``.
-
-.. _perf map files: https://github.com/torvalds/linux/blob/0513e464f9007b70b96740271a948ca5ab6e7dd7/tools/perf/Documentation/jit-interface.txt
diff --git a/Doc/howto/pyporting.rst b/Doc/howto/pyporting.rst
index baea3e85c3b84b..501b16d82d4d6f 100644
--- a/Doc/howto/pyporting.rst
+++ b/Doc/howto/pyporting.rst
@@ -1,49 +1,48 @@
 .. _pyporting-howto:
 
-*********************************
-Porting Python 2 Code to Python 3
-*********************************
+*************************************
+How to port Python 2 Code to Python 3
+*************************************
 
 :author: Brett Cannon
 
 .. topic:: Abstract
 
-   With Python 3 being the future of Python while Python 2 is still in active
-   use, it is good to have your project available for both major releases of
-   Python. This guide is meant to help you figure out how best to support both
-   Python 2 & 3 simultaneously.
+   Python 2 reached its official end-of-life at the start of 2020. This means
+   that no new bug reports, fixes, or changes will be made to Python 2 - it's
+   no longer supported.
+
+   This guide is intended to provide you with a path to Python 3 for your
+   code, that includes compatibility with Python 2 as a first step.
 
    If you are looking to port an extension module instead of pure Python code,
    please see :ref:`cporting-howto`.
 
-   If you would like to read one core Python developer's take on why Python 3
-   came into existence, you can read Nick Coghlan's `Python 3 Q & A`_ or
-   Brett Cannon's `Why Python 3 exists`_.
-
+   The archived python-porting_ mailing list may contain some useful guidance.
 
-   For help with porting, you can view the archived python-porting_ mailing list.
 
 The Short Explanation
 =====================
 
-To make your project be single-source Python 2/3 compatible, the basic steps
+To achieve Python 2/3 compatibility in a single code base, the basic steps
 are:
 
 #. Only worry about supporting Python 2.7
 #. Make sure you have good test coverage (coverage.py_ can help;
    ``python -m pip install coverage``)
-#. Learn the differences between Python 2 & 3
+#. Learn the differences between Python 2 and 3
 #. Use Futurize_ (or Modernize_) to update your code (e.g. ``python -m pip install future``)
 #. Use Pylint_ to help make sure you don't regress on your Python 3 support
    (``python -m pip install pylint``)
 #. Use caniusepython3_ to find out which of your dependencies are blocking your
    use of Python 3 (``python -m pip install caniusepython3``)
 #. Once your dependencies are no longer blocking you, use continuous integration
-   to make sure you stay compatible with Python 2 & 3 (tox_ can help test
+   to make sure you stay compatible with Python 2 and 3 (tox_ can help test
    against multiple versions of Python; ``python -m pip install tox``)
-#. Consider using optional static type checking to make sure your type usage
-   works in both Python 2 & 3 (e.g. use mypy_ to check your typing under both
-   Python 2 & Python 3; ``python -m pip install mypy``).
+#. Consider using optional :term:`static type checking <static type checker>`
+   to make sure your type usage
+   works in both Python 2 and 3 (e.g. use mypy_ to check your typing under both
+   Python 2 and Python 3; ``python -m pip install mypy``).
 
 .. note::
 
@@ -55,43 +54,30 @@ are:
 Details
 =======
 
-A key point about supporting Python 2 & 3 simultaneously is that you can start
-**today**! Even if your dependencies are not supporting Python 3 yet that does
-not mean you can't modernize your code **now** to support Python 3. Most changes
-required to support Python 3 lead to cleaner code using newer practices even in
-Python 2 code.
+Even if other factors - say, dependencies over which you have no control -
+still require you to support Python 2, that does not prevent you taking the
+step of including Python 3 support.
 
-Another key point is that modernizing your Python 2 code to also support
-Python 3 is largely automated for you. While you might have to make some API
-decisions thanks to Python 3 clarifying text data versus binary data, the
-lower-level work is now mostly done for you and thus can at least benefit from
-the automated changes immediately.
+Most changes required to support Python 3 lead to cleaner code using newer
+practices even in Python 2 code.
 
-Keep those key points in mind while you read on about the details of porting
-your code to support Python 2 & 3 simultaneously.
 
+Different versions of Python 2
+------------------------------
 
-Drop support for Python 2.6 and older
--------------------------------------
+Ideally, your code should be compatible with Python 2.7, which was the
+last supported version of Python 2.
 
-While you can make Python 2.5 work with Python 3, it is **much** easier if you
-only have to work with Python 2.7. If dropping Python 2.5 is not an
-option then the six_ project can help you support Python 2.5 & 3 simultaneously
-(``python -m pip install six``). Do realize, though, that nearly all the projects listed
-in this HOWTO will not be available to you.
+Some of the tools mentioned in this guide will not work with Python 2.6.
 
-If you are able to skip Python 2.5 and older, then the required changes
-to your code should continue to look and feel like idiomatic Python code. At
-worst you will have to use a function instead of a method in some instances or
-have to import a function instead of using a built-in one, but otherwise the
-overall transformation should not feel foreign to you.
+If absolutely necessary, the six_ project can help you support Python 2.5 and
+3 simultaneously. Do realize, though, that nearly all the projects listed in
+this guide will not be available to you.
 
-But you should aim for only supporting Python 2.7. Python 2.6 is no longer
-freely supported and thus is not receiving bugfixes. This means **you** will have
-to work around any issues you come across with Python 2.6. There are also some
-tools mentioned in this HOWTO which do not support Python 2.6 (e.g., Pylint_),
-and this will become more commonplace as time goes on. It will simply be easier
-for you if you only support the versions of Python that you have to support.
+If you are able to skip Python 2.5 and older, the required changes to your
+code will be minimal. At worst you will have to use a function instead of a
+method in some instances or have to import a function instead of using a
+built-in one.
 
 
 Make sure you specify the proper version support in your ``setup.py`` file
@@ -118,62 +104,57 @@ coverage). If you don't already have a tool to measure test coverage then
 coverage.py_ is recommended.
 
 
-Learn the differences between Python 2 & 3
--------------------------------------------
+Be aware of the differences between Python 2 and 3
+--------------------------------------------------
 
 Once you have your code well-tested you are ready to begin porting your code to
 Python 3! But to fully understand how your code is going to change and what
 you want to look out for while you code, you will want to learn what changes
-Python 3 makes in terms of Python 2. Typically the two best ways of doing that
-is reading the :ref:`"What's New" <whatsnew-index>` doc for each release of Python 3 and the
-`Porting to Python 3`_ book (which is free online). There is also a handy
-`cheat sheet`_ from the Python-Future project.
+Python 3 makes in terms of Python 2.
+
+Some resources for understanding the differences and their implications for you
+code:
+
+* the :ref:`"What's New" <whatsnew-index>` doc for each release of Python 3
+* the `Porting to Python 3`_ book (which is free online)
+* the handy `cheat sheet`_ from the Python-Future project.
 
 
 Update your code
 ----------------
 
-Once you feel like you know what is different in Python 3 compared to Python 2,
-it's time to update your code! You have a choice between two tools in porting
-your code automatically: Futurize_ and Modernize_. Which tool you choose will
-depend on how much like Python 3 you want your code to be. Futurize_ does its
-best to make Python 3 idioms and practices exist in Python 2, e.g. backporting
-the ``bytes`` type from Python 3 so that you have semantic parity between the
-major versions of Python. Modernize_,
-on the other hand, is more conservative and targets a Python 2/3 subset of
-Python, directly relying on six_ to help provide compatibility. As Python 3 is
-the future, it might be best to consider Futurize to begin adjusting to any new
-practices that Python 3 introduces which you are not accustomed to yet.
-
-Regardless of which tool you choose, they will update your code to run under
-Python 3 while staying compatible with the version of Python 2 you started with.
-Depending on how conservative you want to be, you may want to run the tool over
-your test suite first and visually inspect the diff to make sure the
-transformation is accurate. After you have transformed your test suite and
-verified that all the tests still pass as expected, then you can transform your
-application code knowing that any tests which fail is a translation failure.
+There are tools available that can port your code automatically.
+
+Futurize_ does its best to make Python 3 idioms and practices exist in Python
+2, e.g. backporting the ``bytes`` type from Python 3 so that you have
+semantic parity between the major versions of Python. This is the better
+approach for most cases.
+
+Modernize_, on the other hand, is more conservative and targets a Python 2/3
+subset of Python, directly relying on six_ to help provide compatibility.
+
+A good approach is to run the tool over your test suite first and visually
+inspect the diff to make sure the transformation is accurate. After you have
+transformed your test suite and verified that all the tests still pass as
+expected, then you can transform your application code knowing that any tests
+which fail is a translation failure.
 
 Unfortunately the tools can't automate everything to make your code work under
-Python 3 and so there are a handful of things you will need to update manually
-to get full Python 3 support (which of these steps are necessary vary between
-the tools). Read the documentation for the tool you choose to use to see what it
-fixes by default and what it can do optionally to know what will (not) be fixed
-for you and what you may have to fix on your own (e.g. using ``io.open()`` over
-the built-in ``open()`` function is off by default in Modernize). Luckily,
-though, there are only a couple of things to watch out for which can be
-considered large issues that may be hard to debug if not watched for.
+Python 3, and you will also need to read the tools' documentation in case some
+options you need are turned off by default.
 
+Key issues to be aware of and check for:
 
 Division
 ++++++++
 
-In Python 3, ``5 / 2 == 2.5`` and not ``2``; all division between ``int`` values
-result in a ``float``. This change has actually been planned since Python 2.2
-which was released in 2002. Since then users have been encouraged to add
-``from __future__ import division`` to any and all files which use the ``/`` and
-``//`` operators or to be running the interpreter with the ``-Q`` flag. If you
-have not been doing this then you will need to go through your code and do two
-things:
+In Python 3, ``5 / 2 == 2.5`` and not ``2`` as it was in Python 2; all
+division between ``int`` values result in a ``float``. This change has
+actually been planned since Python 2.2 which was released in 2002. Since then
+users have been encouraged to add ``from __future__ import division`` to any
+and all files which use the ``/`` and ``//`` operators or to be running the
+interpreter with the ``-Q`` flag. If you have not been doing this then you
+will need to go through your code and do two things:
 
 #. Add ``from __future__ import division`` to your files
 #. Update any division operator as necessary to either use ``//`` to use floor
@@ -197,30 +178,29 @@ specific type. This complicated the situation especially for anyone supporting
 multiple languages as APIs wouldn't bother explicitly supporting ``unicode``
 when they claimed text data support.
 
-To make the distinction between text and binary data clearer and more
-pronounced, Python 3 did what most languages created in the age of the internet
-have done and made text and binary data distinct types that cannot blindly be
-mixed together (Python predates widespread access to the internet). For any code
-that deals only with text or only binary data, this separation doesn't pose an
-issue. But for code that has to deal with both, it does mean you might have to
-now care about when you are using text compared to binary data, which is why
-this cannot be entirely automated.
-
-To start, you will need to decide which APIs take text and which take binary
-(it is **highly** recommended you don't design APIs that can take both due to
-the difficulty of keeping the code working; as stated earlier it is difficult to
-do well). In Python 2 this means making sure the APIs that take text can work
-with ``unicode`` and those that work with binary data work with the
-``bytes`` type from Python 3 (which is a subset of ``str`` in Python 2 and acts
-as an alias for ``bytes`` type in Python 2). Usually the biggest issue is
-realizing which methods exist on which types in Python 2 & 3 simultaneously
-(for text that's ``unicode`` in Python 2 and ``str`` in Python 3, for binary
-that's ``str``/``bytes`` in Python 2 and ``bytes`` in Python 3). The following
-table lists the **unique** methods of each data type across Python 2 & 3
-(e.g., the ``decode()`` method is usable on the equivalent binary data type in
-either Python 2 or 3, but it can't be used by the textual data type consistently
-between Python 2 and 3 because ``str`` in Python 3 doesn't have the method). Do
-note that as of Python 3.5 the ``__mod__`` method was added to the bytes type.
+Python 3 made text and binary data distinct types that cannot simply be mixed
+together. For any code that deals only with text or only binary data, this
+separation doesn't pose an issue. But for code that has to deal with both, it
+does mean you might have to now care about when you are using text compared
+to binary data, which is why this cannot be entirely automated.
+
+Decide which APIs take text and which take binary (it is **highly** recommended
+you don't design APIs that can take both due to the difficulty of keeping the
+code working; as stated earlier it is difficult to do well). In Python 2 this
+means making sure the APIs that take text can work with ``unicode`` and those
+that work with binary data work with the ``bytes`` type from Python 3
+(which is a subset of ``str`` in Python 2 and acts as an alias for ``bytes``
+type in Python 2). Usually the biggest issue is realizing which methods exist
+on which types in Python 2 and 3 simultaneously (for text that's ``unicode``
+in Python 2 and ``str`` in Python 3, for binary that's ``str``/``bytes`` in
+Python 2 and ``bytes`` in Python 3).
+
+The following table lists the **unique** methods of each data type across
+Python 2 and 3 (e.g., the ``decode()`` method is usable on the equivalent binary
+data type in either Python 2 or 3, but it can't be used by the textual data
+type consistently between Python 2 and 3 because ``str`` in Python 3 doesn't
+have the method). Do note that as of Python 3.5 the ``__mod__`` method was
+added to the bytes type.
 
 ======================== =====================
 **Text data**            **Binary data**
@@ -246,12 +226,11 @@ having to keep track of what type of data you are working with.
 The next issue is making sure you know whether the string literals in your code
 represent text or binary data. You should add a ``b`` prefix to any
 literal that presents binary data. For text you should add a ``u`` prefix to
-the text literal. (there is a :mod:`__future__` import to force all unspecified
+the text literal. (There is a :mod:`__future__` import to force all unspecified
 literals to be Unicode, but usage has shown it isn't as effective as adding a
 ``b`` or ``u`` prefix to all literals explicitly)
 
-As part of this dichotomy you also need to be careful about opening files.
-Unless you have been working on Windows, there is a chance you have not always
+You also need to be careful about opening files. Possibly you have not always
 bothered to add the ``b`` mode when opening a binary file (e.g., ``rb`` for
 binary reading).  Under Python 3, binary files and text files are clearly
 distinct and mutually incompatible; see the :mod:`io` module for details.
@@ -265,7 +244,7 @@ outdated practice of using :func:`codecs.open` as that's only necessary for
 keeping compatibility with Python 2.5.
 
 The constructors of both ``str`` and ``bytes`` have different semantics for the
-same arguments between Python 2 & 3. Passing an integer to ``bytes`` in Python 2
+same arguments between Python 2 and 3. Passing an integer to ``bytes`` in Python 2
 will give you the string representation of the integer: ``bytes(3) == '3'``.
 But in Python 3, an integer argument to ``bytes`` will give you a bytes object
 as long as the integer specified, filled with null bytes:
@@ -400,7 +379,7 @@ Use continuous integration to stay compatible
 ---------------------------------------------
 
 Once you are able to fully run under Python 3 you will want to make sure your
-code always works under both Python 2 & 3. Probably the best tool for running
+code always works under both Python 2 and 3. Probably the best tool for running
 your tests under multiple Python interpreters is tox_. You can then integrate
 tox with your continuous integration system so that you never accidentally break
 Python 2 or 3 support.
@@ -413,16 +392,11 @@ separation of text/binary data handling or indexing on bytes you wouldn't easily
 find the mistake. This flag will raise an exception when these kinds of
 comparisons occur, making the mistake much easier to track down.
 
-And that's mostly it! At this point your code base is compatible with both
-Python 2 and 3 simultaneously. Your testing will also be set up so that you
-don't accidentally break Python 2 or 3 compatibility regardless of which version
-you typically run your tests under while developing.
-
 
 Consider using optional static type checking
 --------------------------------------------
 
-Another way to help port your code is to use a static type checker like
+Another way to help port your code is to use a :term:`static type checker` like
 mypy_ or pytype_ on your code. These tools can be used to analyze your code as
 if it's being run under Python 2, then you can run the tool a second time as if
 your code is running under Python 3. By running a static type checker twice like
diff --git a/Doc/howto/regex.rst b/Doc/howto/regex.rst
index 655df59e27b641..5e2f9a9d1837fe 100644
--- a/Doc/howto/regex.rst
+++ b/Doc/howto/regex.rst
@@ -245,6 +245,9 @@ You can omit either *m* or *n*; in that case, a reasonable value is assumed for
 the missing value.  Omitting *m* is interpreted as a lower limit of 0, while
 omitting *n* results in an upper bound of infinity.
 
+The simplest case ``{m}`` matches the preceding item exactly *m* times.
+For example, ``a/{2}b`` will only match ``'a//b'``.
+
 Readers of a reductionist bent may notice that the three other quantifiers can
 all be expressed using this notation.  ``{0,}`` is the same as ``*``, ``{1,}``
 is equivalent to ``+``, and ``{0,1}`` is the same as ``?``.  It's better to use
@@ -518,6 +521,8 @@ cache.
 Compilation Flags
 -----------------
 
+.. currentmodule:: re
+
 Compilation flags let you modify some aspects of how regular expressions work.
 Flags are available in the :mod:`re` module under two names, a long name such as
 :const:`IGNORECASE` and a short, one-letter form such as :const:`I`.  (If you're
diff --git a/Doc/howto/sorting.rst b/Doc/howto/sorting.rst
index decce12bf3faf6..38dd09f0a721d2 100644
--- a/Doc/howto/sorting.rst
+++ b/Doc/howto/sorting.rst
@@ -273,7 +273,7 @@ Odds and Ends
 
 * The sort routines use ``<`` when making comparisons
   between two objects. So, it is easy to add a standard sort order to a class by
-  defining an :meth:`__lt__` method:
+  defining an :meth:`~object.__lt__` method:
 
   .. doctest::
 
@@ -281,8 +281,8 @@ Odds and Ends
     >>> sorted(student_objects)
     [('dave', 'B', 10), ('jane', 'B', 12), ('john', 'A', 15)]
 
-  However, note that ``<`` can fall back to using :meth:`__gt__` if
-  :meth:`__lt__` is not implemented (see :func:`object.__lt__`).
+  However, note that ``<`` can fall back to using :meth:`~object.__gt__` if
+  :meth:`~object.__lt__` is not implemented (see :func:`object.__lt__`).
 
 * Key functions need not depend directly on the objects being sorted. A key
   function can also access external resources. For instance, if the student grades
diff --git a/Doc/howto/timerfd.rst b/Doc/howto/timerfd.rst
new file mode 100644
index 00000000000000..98f0294f9d082d
--- /dev/null
+++ b/Doc/howto/timerfd.rst
@@ -0,0 +1,230 @@
+.. _timerfd-howto:
+
+*****************************
+  timer file descriptor HOWTO
+*****************************
+
+:Release: 1.13
+
+This HOWTO discusses Python's support for the linux timer file descriptor.
+
+
+Examples
+========
+
+The following example shows how to use a timer file descriptor
+to execute a function twice a second:
+
+.. code-block:: python
+
+   # Practical scripts should use really use a non-blocking timer,
+   # we use a blocking timer here for simplicity.
+   import os, time
+
+   # Create the timer file descriptor
+   fd = os.timerfd_create(time.CLOCK_REALTIME)
+
+   # Start the timer in 1 second, with an interval of half a second
+   os.timerfd_settime(fd, initial=1, interval=0.5)
+
+   try:
+       # Process timer events four times.
+       for _ in range(4):
+           # read() will block until the timer expires
+           _ = os.read(fd, 8)
+           print("Timer expired")
+   finally:
+       # Remember to close the timer file descriptor!
+       os.close(fd)
+
+To avoid the precision loss caused by the :class:`float` type,
+timer file descriptors allow specifying initial expiration and interval
+in integer nanoseconds with ``_ns`` variants of the functions.
+
+This example shows how :func:`~select.epoll` can be used with timer file
+descriptors to wait until the file descriptor is ready for reading:
+
+.. code-block:: python
+
+   import os, time, select, socket, sys
+
+   # Create an epoll object
+   ep = select.epoll()
+
+   # In this example, use loopback address to send "stop" command to the server.
+   #
+   # $ telnet 127.0.0.1 1234
+   # Trying 127.0.0.1...
+   # Connected to 127.0.0.1.
+   # Escape character is '^]'.
+   # stop
+   # Connection closed by foreign host.
+   #
+   sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+   sock.bind(("127.0.0.1", 1234))
+   sock.setblocking(False)
+   sock.listen(1)
+   ep.register(sock, select.EPOLLIN)
+
+   # Create timer file descriptors in non-blocking mode.
+   num = 3
+   fds = []
+   for _ in range(num):
+       fd = os.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
+       fds.append(fd)
+       # Register the timer file descriptor for read events
+       ep.register(fd, select.EPOLLIN)
+
+   # Start the timer with os.timerfd_settime_ns() in nanoseconds.
+   # Timer 1 fires every 0.25 seconds; timer 2 every 0.5 seconds; etc
+   for i, fd in enumerate(fds, start=1):
+       one_sec_in_nsec = 10**9
+       i = i * one_sec_in_nsec
+       os.timerfd_settime_ns(fd, initial=i//4, interval=i//4)
+
+   timeout = 3
+   try:
+       conn = None
+       is_active = True
+       while is_active:
+           # Wait for the timer to expire for 3 seconds.
+           # epoll.poll() returns a list of (fd, event) pairs.
+           # fd is a file descriptor.
+           # sock and conn[=returned value of socket.accept()] are socket objects, not file descriptors.
+           # So use sock.fileno() and conn.fileno() to get the file descriptors.
+           events = ep.poll(timeout)
+
+           # If more than one timer file descriptors are ready for reading at once,
+           # epoll.poll() returns a list of (fd, event) pairs.
+           #
+           # In this example settings,
+           #    1st timer fires every 0.25 seconds in 0.25 seconds. (0.25, 0.5, 0.75, 1.0, ...)
+           #    2nd timer every 0.5 seconds in 0.5 seconds. (0.5, 1.0, 1.5, 2.0, ...)
+           #    3rd timer every 0.75 seconds in 0.75 seconds. (0.75, 1.5, 2.25, 3.0, ...)
+           #
+           #    In 0.25 seconds, only 1st timer fires.
+           #    In 0.5 seconds, 1st timer and 2nd timer fires at once.
+           #    In 0.75 seconds, 1st timer and 3rd timer fires at once.
+           #    In 1.5 seconds, 1st timer, 2nd timer and 3rd timer fires at once.
+           #
+           # If a timer file descriptor is signaled more than once since
+           # the last os.read() call, os.read() returns the nubmer of signaled
+           # as host order of class bytes.
+           print(f"Signaled events={events}")
+           for fd, event in events:
+               if event & select.EPOLLIN:
+                   if fd == sock.fileno():
+                       # Check if there is a connection request.
+                       print(f"Accepting connection {fd}")
+                       conn, addr = sock.accept()
+                       conn.setblocking(False)
+                       print(f"Accepted connection {conn} from {addr}")
+                       ep.register(conn, select.EPOLLIN)
+                   elif conn and fd == conn.fileno():
+                       # Check if there is data to read.
+                       print(f"Reading data {fd}")
+                       data = conn.recv(1024)
+                       if data:
+                           # You should catch UnicodeDecodeError exception for safety.
+                           cmd = data.decode()
+                           if cmd.startswith("stop"):
+                               print(f"Stopping server")
+                               is_active = False
+                           else:
+                               print(f"Unknown command: {cmd}")
+                       else:
+                           # No more data, close connection
+                           print(f"Closing connection {fd}")
+                           ep.unregister(conn)
+                           conn.close()
+                           conn = None
+                   elif fd in fds:
+                       print(f"Reading timer {fd}")
+                       count = int.from_bytes(os.read(fd, 8), byteorder=sys.byteorder)
+                       print(f"Timer {fds.index(fd) + 1} expired {count} times")
+                   else:
+                       print(f"Unknown file descriptor {fd}")
+   finally:
+       for fd in fds:
+           ep.unregister(fd)
+           os.close(fd)
+       ep.close()
+
+This example shows how :func:`~select.select` can be used with timer file
+descriptors to wait until the file descriptor is ready for reading:
+
+.. code-block:: python
+
+   import os, time, select, socket, sys
+
+   # In this example, use loopback address to send "stop" command to the server.
+   #
+   # $ telnet 127.0.0.1 1234
+   # Trying 127.0.0.1...
+   # Connected to 127.0.0.1.
+   # Escape character is '^]'.
+   # stop
+   # Connection closed by foreign host.
+   #
+   sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+   sock.bind(("127.0.0.1", 1234))
+   sock.setblocking(False)
+   sock.listen(1)
+
+   # Create timer file descriptors in non-blocking mode.
+   num = 3
+   fds = [os.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
+          for _ in range(num)]
+   select_fds = fds + [sock]
+
+   # Start the timers with os.timerfd_settime() in seconds.
+   # Timer 1 fires every 0.25 seconds; timer 2 every 0.5 seconds; etc
+   for i, fd in enumerate(fds, start=1):
+      os.timerfd_settime(fd, initial=i/4, interval=i/4)
+
+   timeout = 3
+   try:
+       conn = None
+       is_active = True
+       while is_active:
+          # Wait for the timer to expire for 3 seconds.
+          # select.select() returns a list of file descriptors or objects.
+          rfd, wfd, xfd = select.select(select_fds, select_fds, select_fds, timeout)
+          for fd in rfd:
+              if fd == sock:
+                  # Check if there is a connection request.
+                  print(f"Accepting connection {fd}")
+                  conn, addr = sock.accept()
+                  conn.setblocking(False)
+                  print(f"Accepted connection {conn} from {addr}")
+                  select_fds.append(conn)
+              elif conn and fd == conn:
+                  # Check if there is data to read.
+                  print(f"Reading data {fd}")
+                  data = conn.recv(1024)
+                  if data:
+                      # You should catch UnicodeDecodeError exception for safety.
+                      cmd = data.decode()
+                      if cmd.startswith("stop"):
+                          print(f"Stopping server")
+                          is_active = False
+                      else:
+                          print(f"Unknown command: {cmd}")
+                  else:
+                      # No more data, close connection
+                      print(f"Closing connection {fd}")
+                      select_fds.remove(conn)
+                      conn.close()
+                      conn = None
+              elif fd in fds:
+                  print(f"Reading timer {fd}")
+                  count = int.from_bytes(os.read(fd, 8), byteorder=sys.byteorder)
+                  print(f"Timer {fds.index(fd) + 1} expired {count} times")
+              else:
+                  print(f"Unknown file descriptor {fd}")
+   finally:
+       for fd in fds:
+          os.close(fd)
+       sock.close()
+       sock = None
+
diff --git a/Doc/howto/unicode.rst b/Doc/howto/unicode.rst
index b0faa68d240896..254fe729355353 100644
--- a/Doc/howto/unicode.rst
+++ b/Doc/howto/unicode.rst
@@ -424,8 +424,8 @@ lowercase letters 'ss'.
 
 A second tool is the :mod:`unicodedata` module's
 :func:`~unicodedata.normalize` function that converts strings to one
-of several normal forms, where letters followed by a combining
-character are replaced with single characters.  :func:`normalize` can
+of several normal forms, where letters followed by a combining character are
+replaced with single characters.  :func:`~unicodedata.normalize` can
 be used to perform string comparisons that won't falsely report
 inequality if two strings use combining characters differently:
 
@@ -474,8 +474,8 @@ The Unicode Standard also specifies how to do caseless comparisons::
 
     print(compare_caseless(single_char, multiple_chars))
 
-This will print ``True``.  (Why is :func:`NFD` invoked twice?  Because
-there are a few characters that make :meth:`casefold` return a
+This will print ``True``.  (Why is :func:`!NFD` invoked twice?  Because
+there are a few characters that make :meth:`~str.casefold` return a
 non-normalized string, so the result needs to be normalized again. See
 section 3.13 of the Unicode Standard for a discussion and an example.)
 
diff --git a/Doc/howto/urllib2.rst b/Doc/howto/urllib2.rst
index 61ba6bd7224fcc..570435d48866d3 100644
--- a/Doc/howto/urllib2.rst
+++ b/Doc/howto/urllib2.rst
@@ -6,13 +6,6 @@
 
 :Author: `Michael Foord <https://agileabstractions.com/>`_
 
-.. note::
-
-    There is a French translation of an earlier revision of this
-    HOWTO, available at `urllib2 - Le Manuel manquant
-    <https://web.archive.org/web/20200910051922/http://www.voidspace.org.uk/python/articles/urllib2_francais.shtml>`_.
-
-
 
 Introduction
 ============
@@ -201,11 +194,11 @@ which comes after we have a look at what happens when things go wrong.
 Handling Exceptions
 ===================
 
-*urlopen* raises :exc:`URLError` when it cannot handle a response (though as
+*urlopen* raises :exc:`~urllib.error.URLError` when it cannot handle a response (though as
 usual with Python APIs, built-in exceptions such as :exc:`ValueError`,
 :exc:`TypeError` etc. may also be raised).
 
-:exc:`HTTPError` is the subclass of :exc:`URLError` raised in the specific case of
+:exc:`~urllib.error.HTTPError` is the subclass of :exc:`~urllib.error.URLError` raised in the specific case of
 HTTP URLs.
 
 The exception classes are exported from the :mod:`urllib.error` module.
@@ -236,12 +229,12 @@ the status code indicates that the server is unable to fulfil the request. The
 default handlers will handle some of these responses for you (for example, if
 the response is a "redirection" that requests the client fetch the document from
 a different URL, urllib will handle that for you). For those it can't handle,
-urlopen will raise an :exc:`HTTPError`. Typical errors include '404' (page not
+urlopen will raise an :exc:`~urllib.error.HTTPError`. Typical errors include '404' (page not
 found), '403' (request forbidden), and '401' (authentication required).
 
 See section 10 of :rfc:`2616` for a reference on all the HTTP error codes.
 
-The :exc:`HTTPError` instance raised will have an integer 'code' attribute, which
+The :exc:`~urllib.error.HTTPError` instance raised will have an integer 'code' attribute, which
 corresponds to the error sent by the server.
 
 Error Codes
@@ -324,7 +317,7 @@ dictionary is reproduced here for convenience ::
         }
 
 When an error is raised the server responds by returning an HTTP error code
-*and* an error page. You can use the :exc:`HTTPError` instance as a response on the
+*and* an error page. You can use the :exc:`~urllib.error.HTTPError` instance as a response on the
 page returned. This means that as well as the code attribute, it also has read,
 geturl, and info, methods as returned by the ``urllib.response`` module::
 
@@ -345,7 +338,7 @@ geturl, and info, methods as returned by the ``urllib.response`` module::
 Wrapping it Up
 --------------
 
-So if you want to be prepared for :exc:`HTTPError` *or* :exc:`URLError` there are two
+So if you want to be prepared for :exc:`~urllib.error.HTTPError` *or* :exc:`~urllib.error.URLError` there are two
 basic approaches. I prefer the second approach.
 
 Number 1
@@ -372,7 +365,7 @@ Number 1
 .. note::
 
     The ``except HTTPError`` *must* come first, otherwise ``except URLError``
-    will *also* catch an :exc:`HTTPError`.
+    will *also* catch an :exc:`~urllib.error.HTTPError`.
 
 Number 2
 ~~~~~~~~
@@ -398,7 +391,7 @@ Number 2
 info and geturl
 ===============
 
-The response returned by urlopen (or the :exc:`HTTPError` instance) has two
+The response returned by urlopen (or the :exc:`~urllib.error.HTTPError` instance) has two
 useful methods :meth:`info` and :meth:`geturl` and is defined in the module
 :mod:`urllib.response`..
 
diff --git a/Doc/includes/email-alternative.py b/Doc/includes/email-alternative.py
index df7ca6f3faa332..26b302b495c7ac 100644
--- a/Doc/includes/email-alternative.py
+++ b/Doc/includes/email-alternative.py
@@ -8,14 +8,14 @@
 
 # Create the base text message.
 msg = EmailMessage()
-msg['Subject'] = "Ayons asperges pour le déjeuner"
+msg['Subject'] = "Pourquoi pas des asperges pour ce midi ?"
 msg['From'] = Address("Pepé Le Pew", "pepe", "example.com")
 msg['To'] = (Address("Penelope Pussycat", "penelope", "example.com"),
              Address("Fabrette Pussycat", "fabrette", "example.com"))
 msg.set_content("""\
 Salut!
 
-Cela ressemble à un excellent recipie[1] déjeuner.
+Cette recette [1] sera sûrement un très bon repas.
 
 [1] http://www.yummly.com/recipe/Roasted-Asparagus-Epicurious-203718
 
@@ -31,10 +31,10 @@
   <head></head>
   <body>
     <p>Salut!</p>
-    <p>Cela ressemble à un excellent
+    <p>Cette
         <a href="http://www.yummly.com/recipe/Roasted-Asparagus-Epicurious-203718">
-            recipie
-        </a> déjeuner.
+            recette
+        </a> sera sûrement un très bon repas.
     </p>
     <img src="cid:{asparagus_cid}" />
   </body>
diff --git a/Doc/includes/custom.c b/Doc/includes/newtypes/custom.c
similarity index 86%
rename from Doc/includes/custom.c
rename to Doc/includes/newtypes/custom.c
index 9cfba50ace25db..5253f879360210 100644
--- a/Doc/includes/custom.c
+++ b/Doc/includes/newtypes/custom.c
@@ -34,9 +34,7 @@ PyInit_custom(void)
     if (m == NULL)
         return NULL;
 
-    Py_INCREF(&CustomType);
-    if (PyModule_AddObject(m, "Custom", (PyObject *) &CustomType) < 0) {
-        Py_DECREF(&CustomType);
+    if (PyModule_AddObjectRef(m, "Custom", (PyObject *) &CustomType) < 0) {
         Py_DECREF(m);
         return NULL;
     }
diff --git a/Doc/includes/custom2.c b/Doc/includes/newtypes/custom2.c
similarity index 100%
rename from Doc/includes/custom2.c
rename to Doc/includes/newtypes/custom2.c
diff --git a/Doc/includes/custom3.c b/Doc/includes/newtypes/custom3.c
similarity index 100%
rename from Doc/includes/custom3.c
rename to Doc/includes/newtypes/custom3.c
diff --git a/Doc/includes/custom4.c b/Doc/includes/newtypes/custom4.c
similarity index 100%
rename from Doc/includes/custom4.c
rename to Doc/includes/newtypes/custom4.c
diff --git a/Doc/includes/newtypes/pyproject.toml b/Doc/includes/newtypes/pyproject.toml
new file mode 100644
index 00000000000000..ea7937a3171473
--- /dev/null
+++ b/Doc/includes/newtypes/pyproject.toml
@@ -0,0 +1,7 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "custom"
+version = "1"
diff --git a/Doc/includes/newtypes/setup.py b/Doc/includes/newtypes/setup.py
new file mode 100644
index 00000000000000..67f83673bcc657
--- /dev/null
+++ b/Doc/includes/newtypes/setup.py
@@ -0,0 +1,8 @@
+from setuptools import Extension, setup
+setup(ext_modules=[
+    Extension("custom", ["custom.c"]),
+    Extension("custom2", ["custom2.c"]),
+    Extension("custom3", ["custom3.c"]),
+    Extension("custom4", ["custom4.c"]),
+    Extension("sublist", ["sublist.c"]),
+])
diff --git a/Doc/includes/sublist.c b/Doc/includes/newtypes/sublist.c
similarity index 91%
rename from Doc/includes/sublist.c
rename to Doc/includes/newtypes/sublist.c
index b36dadf07eae87..d8aba463f30ba2 100644
--- a/Doc/includes/sublist.c
+++ b/Doc/includes/newtypes/sublist.c
@@ -58,9 +58,7 @@ PyInit_sublist(void)
     if (m == NULL)
         return NULL;
 
-    Py_INCREF(&SubListType);
-    if (PyModule_AddObject(m, "SubList", (PyObject *) &SubListType) < 0) {
-        Py_DECREF(&SubListType);
+    if (PyModule_AddObjectRef(m, "SubList", (PyObject *) &SubListType) < 0) {
         Py_DECREF(m);
         return NULL;
     }
diff --git a/Doc/includes/test.py b/Doc/includes/newtypes/test.py
similarity index 94%
rename from Doc/includes/test.py
rename to Doc/includes/newtypes/test.py
index 09ebe3fec0bdbe..55a5cf9f68b94a 100644
--- a/Doc/includes/test.py
+++ b/Doc/includes/newtypes/test.py
@@ -187,13 +187,6 @@
 >>> gc.enable()
 """
 
-import os
-import sys
-from distutils.util import get_platform
-PLAT_SPEC = "%s-%d.%d" % (get_platform(), *sys.version_info[:2])
-src = os.path.join("build", "lib.%s" % PLAT_SPEC)
-sys.path.append(src)
-
 if __name__ == "__main__":
     import doctest, __main__
     doctest.testmod(__main__)
diff --git a/Doc/includes/setup.py b/Doc/includes/setup.py
deleted file mode 100644
index a38a39de3e7c86..00000000000000
--- a/Doc/includes/setup.py
+++ /dev/null
@@ -1,9 +0,0 @@
-from distutils.core import setup, Extension
-setup(name="noddy", version="1.0",
-      ext_modules=[
-         Extension("noddy", ["noddy.c"]),
-         Extension("noddy2", ["noddy2.c"]),
-         Extension("noddy3", ["noddy3.c"]),
-         Extension("noddy4", ["noddy4.c"]),
-         Extension("shoddy", ["shoddy.c"]),
-         ])
diff --git a/Doc/includes/turtle-star.py b/Doc/includes/turtle-star.py
deleted file mode 100644
index 1a5db761b32385..00000000000000
--- a/Doc/includes/turtle-star.py
+++ /dev/null
@@ -1,10 +0,0 @@
-from turtle import *
-color('red', 'yellow')
-begin_fill()
-while True:
-    forward(200)
-    left(170)
-    if abs(pos()) < 1:
-        break
-end_fill()
-done()
diff --git a/Doc/includes/typestruct.h b/Doc/includes/typestruct.h
index f0ad1e47cb0d86..ec939c28831c33 100644
--- a/Doc/includes/typestruct.h
+++ b/Doc/includes/typestruct.h
@@ -82,5 +82,5 @@ typedef struct _typeobject {
     vectorcallfunc tp_vectorcall;
 
     /* bitset of which type-watchers care about this type */
-    char tp_watched;
+    unsigned char tp_watched;
 } PyTypeObject;
diff --git a/Doc/install/index.rst b/Doc/install/index.rst
deleted file mode 100644
index ab581d785ef7f0..00000000000000
--- a/Doc/install/index.rst
+++ /dev/null
@@ -1,1081 +0,0 @@
-.. highlight:: none
-
-.. _install-index:
-
-********************************************
-  Installing Python Modules (Legacy version)
-********************************************
-
-:Author: Greg Ward
-
-.. TODO: Fill in XXX comments
-
-.. note::
-
-   The entire ``distutils`` package has been deprecated and will be
-   removed in Python 3.12. This documentation is retained as a
-   reference only, and will be removed with the package. See the
-   :ref:`What's New <distutils-deprecated>` entry for more information.
-
-.. seealso::
-
-   :ref:`installing-index`
-      The up to date module installation documentation. For regular Python
-      usage, you almost certainly want that document rather than this one.
-
-.. note::
-
-   This document is being retained solely until the ``setuptools`` documentation
-   at https://setuptools.readthedocs.io/en/latest/setuptools.html
-   independently covers all of the relevant information currently included here.
-
-.. note::
-
-   This guide only covers the basic tools for building and distributing
-   extensions that are provided as part of this version of Python. Third party
-   tools offer easier to use and more secure alternatives. Refer to the `quick
-   recommendations section <https://packaging.python.org/guides/tool-recommendations/>`__
-   in the Python Packaging User Guide for more information.
-
-
-.. _inst-intro:
-
-
-Introduction
-============
-
-In Python 2.0, the ``distutils`` API was first added to the standard library.
-This provided Linux distro maintainers with a standard way of converting
-Python projects into Linux distro packages, and system administrators with a
-standard way of installing them directly onto target systems.
-
-In the many years since Python 2.0 was released, tightly coupling the build
-system and package installer to the language runtime release cycle has turned
-out to be problematic, and it is now recommended that projects use the
-``pip`` package installer and the ``setuptools`` build system, rather than
-using ``distutils`` directly.
-
-See :ref:`installing-index` and :ref:`distributing-index` for more details.
-
-This legacy documentation is being retained only until we're confident that the
-``setuptools`` documentation covers everything needed.
-
-.. _inst-new-standard:
-
-Distutils based source distributions
-------------------------------------
-
-If you download a module source distribution, you can tell pretty quickly if it
-was packaged and distributed in the standard way, i.e. using the Distutils.
-First, the distribution's name and version number will be featured prominently
-in the name of the downloaded archive, e.g. :file:`foo-1.0.tar.gz` or
-:file:`widget-0.9.7.zip`.  Next, the archive will unpack into a similarly named
-directory: :file:`foo-1.0` or :file:`widget-0.9.7`.  Additionally, the
-distribution will contain a setup script :file:`setup.py`, and a file named
-:file:`README.txt` or possibly just :file:`README`, which should explain that
-building and installing the module distribution is a simple matter of running
-one command from a terminal::
-
-   python setup.py install
-
-For Windows, this command should be run from a command prompt window
-(:menuselection:`Start --> Accessories`)::
-
-   setup.py install
-
-If all these things are true, then you already know how to build and install the
-modules you've just downloaded:  Run the command above. Unless you need to
-install things in a non-standard way or customize the build process, you don't
-really need this manual.  Or rather, the above command is everything you need to
-get out of this manual.
-
-
-.. _inst-standard-install:
-
-Standard Build and Install
-==========================
-
-As described in section :ref:`inst-new-standard`, building and installing a module
-distribution using the Distutils is usually one simple command to run from a
-terminal::
-
-   python setup.py install
-
-
-.. _inst-platform-variations:
-
-Platform variations
--------------------
-
-You should always run the setup command from the distribution root directory,
-i.e. the top-level subdirectory that the module source distribution unpacks
-into.  For example, if you've just downloaded a module source distribution
-:file:`foo-1.0.tar.gz` onto a Unix system, the normal thing to do is::
-
-   gunzip -c foo-1.0.tar.gz | tar xf -    # unpacks into directory foo-1.0
-   cd foo-1.0
-   python setup.py install
-
-On Windows, you'd probably download :file:`foo-1.0.zip`.  If you downloaded the
-archive file to :file:`C:\\Temp`, then it would unpack into
-:file:`C:\\Temp\\foo-1.0`; you can use either an archive manipulator with a
-graphical user interface (such as WinZip) or a command-line tool (such as
-:program:`unzip` or :program:`pkunzip`) to unpack the archive.  Then, open a
-command prompt window and run::
-
-   cd c:\Temp\foo-1.0
-   python setup.py install
-
-
-.. _inst-splitting-up:
-
-Splitting the job up
---------------------
-
-Running ``setup.py install`` builds and installs all modules in one run.  If you
-prefer to work incrementally---especially useful if you want to customize the
-build process, or if things are going wrong---you can use the setup script to do
-one thing at a time.  This is particularly helpful when the build and install
-will be done by different users---for example, you might want to build a module
-distribution and hand it off to a system administrator for installation (or do
-it yourself, with super-user privileges).
-
-For example, you can build everything in one step, and then install everything
-in a second step, by invoking the setup script twice::
-
-   python setup.py build
-   python setup.py install
-
-If you do this, you will notice that running the :command:`install` command
-first runs the :command:`build` command, which---in this case---quickly notices
-that it has nothing to do, since everything in the :file:`build` directory is
-up-to-date.
-
-You may not need this ability to break things down often if all you do is
-install modules downloaded off the 'net, but it's very handy for more advanced
-tasks.  If you get into distributing your own Python modules and extensions,
-you'll run lots of individual Distutils commands on their own.
-
-
-.. _inst-how-build-works:
-
-How building works
-------------------
-
-As implied above, the :command:`build` command is responsible for putting the
-files to install into a *build directory*.  By default, this is :file:`build`
-under the distribution root; if you're excessively concerned with speed, or want
-to keep the source tree pristine, you can change the build directory with the
-:option:`!--build-base` option. For example::
-
-   python setup.py build --build-base=/path/to/pybuild/foo-1.0
-
-(Or you could do this permanently with a directive in your system or personal
-Distutils configuration file; see section :ref:`inst-config-files`.)  Normally, this
-isn't necessary.
-
-The default layout for the build tree is as follows::
-
-   --- build/ --- lib/
-   or
-   --- build/ --- lib.<plat>/
-                  temp.<plat>/
-
-where ``<plat>`` expands to a brief description of the current OS/hardware
-platform and Python version.  The first form, with just a :file:`lib` directory,
-is used for "pure module distributions"---that is, module distributions that
-include only pure Python modules.  If a module distribution contains any
-extensions (modules written in C/C++), then the second form, with two ``<plat>``
-directories, is used.  In that case, the :file:`temp.{plat}` directory holds
-temporary files generated by the compile/link process that don't actually get
-installed.  In either case, the :file:`lib` (or :file:`lib.{plat}`) directory
-contains all Python modules (pure Python and extensions) that will be installed.
-
-In the future, more directories will be added to handle Python scripts,
-documentation, binary executables, and whatever else is needed to handle the job
-of installing Python modules and applications.
-
-
-.. _inst-how-install-works:
-
-How installation works
-----------------------
-
-After the :command:`build` command runs (whether you run it explicitly, or the
-:command:`install` command does it for you), the work of the :command:`install`
-command is relatively simple: all it has to do is copy everything under
-:file:`build/lib` (or :file:`build/lib.{plat}`) to your chosen installation
-directory.
-
-If you don't choose an installation directory---i.e., if you just run ``setup.py
-install``\ ---then the :command:`install` command installs to the standard
-location for third-party Python modules.  This location varies by platform and
-by how you built/installed Python itself.  On Unix (and macOS, which is also
-Unix-based), it also depends on whether the module distribution being installed
-is pure Python or contains extensions ("non-pure"):
-
-.. tabularcolumns:: |l|l|l|l|
-
-+-----------------+-----------------------------------------------------+--------------------------------------------------+-------+
-| Platform        | Standard installation location                      | Default value                                    | Notes |
-+=================+=====================================================+==================================================+=======+
-| Unix (pure)     | :file:`{prefix}/lib/python{X.Y}/site-packages`      | :file:`/usr/local/lib/python{X.Y}/site-packages` | \(1)  |
-+-----------------+-----------------------------------------------------+--------------------------------------------------+-------+
-| Unix (non-pure) | :file:`{exec-prefix}/lib/python{X.Y}/site-packages` | :file:`/usr/local/lib/python{X.Y}/site-packages` | \(1)  |
-+-----------------+-----------------------------------------------------+--------------------------------------------------+-------+
-| Windows         | :file:`{prefix}\\Lib\\site-packages`                | :file:`C:\\Python{XY}\\Lib\\site-packages`       | \(2)  |
-+-----------------+-----------------------------------------------------+--------------------------------------------------+-------+
-
-Notes:
-
-(1)
-   Most Linux distributions include Python as a standard part of the system, so
-   :file:`{prefix}` and :file:`{exec-prefix}` are usually both :file:`/usr` on
-   Linux.  If you build Python yourself on Linux (or any Unix-like system), the
-   default :file:`{prefix}` and :file:`{exec-prefix}` are :file:`/usr/local`.
-
-(2)
-   The default installation directory on Windows was :file:`C:\\Program
-   Files\\Python` under Python 1.6a1, 1.5.2, and earlier.
-
-:file:`{prefix}` and :file:`{exec-prefix}` stand for the directories that Python
-is installed to, and where it finds its libraries at run-time.  They are always
-the same under Windows, and very often the same under Unix and macOS.  You
-can find out what your Python installation uses for :file:`{prefix}` and
-:file:`{exec-prefix}` by running Python in interactive mode and typing a few
-simple commands. Under Unix, just type ``python`` at the shell prompt.  Under
-Windows, choose :menuselection:`Start --> Programs --> Python X.Y -->
-Python (command line)`.   Once the interpreter is started, you type Python code
-at the prompt.  For example, on my Linux system, I type the three Python
-statements shown below, and get the output as shown, to find out my
-:file:`{prefix}` and :file:`{exec-prefix}`:
-
-.. code-block:: pycon
-
-   Python 2.4 (#26, Aug  7 2004, 17:19:02)
-   Type "help", "copyright", "credits" or "license" for more information.
-   >>> import sys
-   >>> sys.prefix
-   '/usr'
-   >>> sys.exec_prefix
-   '/usr'
-
-A few other placeholders are used in this document: :file:`{X.Y}` stands for the
-version of Python, for example ``3.2``; :file:`{abiflags}` will be replaced by
-the value of :data:`sys.abiflags` or the empty string for platforms which don't
-define ABI flags; :file:`{distname}` will be replaced by the name of the module
-distribution being installed.  Dots and capitalization are important in the
-paths; for example, a value that uses ``python3.2`` on UNIX will typically use
-``Python32`` on Windows.
-
-If you don't want to install modules to the standard location, or if you don't
-have permission to write there, then you need to read about alternate
-installations in section :ref:`inst-alt-install`.  If you want to customize your
-installation directories more heavily, see section :ref:`inst-custom-install` on
-custom installations.
-
-
-.. _inst-alt-install:
-
-Alternate Installation
-======================
-
-Often, it is necessary or desirable to install modules to a location other than
-the standard location for third-party Python modules.  For example, on a Unix
-system you might not have permission to write to the standard third-party module
-directory.  Or you might wish to try out a module before making it a standard
-part of your local Python installation.  This is especially true when upgrading
-a distribution already present: you want to make sure your existing base of
-scripts still works with the new version before actually upgrading.
-
-The Distutils :command:`install` command is designed to make installing module
-distributions to an alternate location simple and painless.  The basic idea is
-that you supply a base directory for the installation, and the
-:command:`install` command picks a set of directories (called an *installation
-scheme*) under this base directory in which to install files.  The details
-differ across platforms, so read whichever of the following sections applies to
-you.
-
-Note that the various alternate installation schemes are mutually exclusive: you
-can pass ``--user``, or ``--home``, or ``--prefix`` and ``--exec-prefix``, or
-``--install-base`` and ``--install-platbase``, but you can't mix from these
-groups.
-
-
-.. _inst-alt-install-user:
-
-Alternate installation: the user scheme
----------------------------------------
-
-This scheme is designed to be the most convenient solution for users that don't
-have write permission to the global site-packages directory or don't want to
-install into it.  It is enabled with a simple option::
-
-   python setup.py install --user
-
-Files will be installed into subdirectories of :data:`site.USER_BASE` (written
-as :file:`{userbase}` hereafter).  This scheme installs pure Python modules and
-extension modules in the same location (also known as :data:`site.USER_SITE`).
-Here are the values for UNIX, including macOS:
-
-=============== ===========================================================
-Type of file    Installation directory
-=============== ===========================================================
-modules         :file:`{userbase}/lib/python{X.Y}/site-packages`
-scripts         :file:`{userbase}/bin`
-data            :file:`{userbase}`
-C headers       :file:`{userbase}/include/python{X.Y}{abiflags}/{distname}`
-=============== ===========================================================
-
-And here are the values used on Windows:
-
-=============== ===========================================================
-Type of file    Installation directory
-=============== ===========================================================
-modules         :file:`{userbase}\\Python{XY}\\site-packages`
-scripts         :file:`{userbase}\\Python{XY}\\Scripts`
-data            :file:`{userbase}`
-C headers       :file:`{userbase}\\Python{XY}\\Include\\{distname}`
-=============== ===========================================================
-
-The advantage of using this scheme compared to the other ones described below is
-that the user site-packages directory is under normal conditions always included
-in :data:`sys.path` (see :mod:`site` for more information), which means that
-there is no additional step to perform after running the :file:`setup.py` script
-to finalize the installation.
-
-The :command:`build_ext` command also has a ``--user`` option to add
-:file:`{userbase}/include` to the compiler search path for header files and
-:file:`{userbase}/lib` to the compiler search path for libraries as well as to
-the runtime search path for shared C libraries (rpath).
-
-
-.. _inst-alt-install-home:
-
-Alternate installation: the home scheme
----------------------------------------
-
-The idea behind the "home scheme" is that you build and maintain a personal
-stash of Python modules.  This scheme's name is derived from the idea of a
-"home" directory on Unix, since it's not unusual for a Unix user to make their
-home directory have a layout similar to :file:`/usr/` or :file:`/usr/local/`.
-This scheme can be used by anyone, regardless of the operating system they
-are installing for.
-
-Installing a new module distribution is as simple as ::
-
-   python setup.py install --home=<dir>
-
-where you can supply any directory you like for the :option:`!--home` option.  On
-Unix, lazy typists can just type a tilde (``~``); the :command:`install` command
-will expand this to your home directory::
-
-   python setup.py install --home=~
-
-To make Python find the distributions installed with this scheme, you may have
-to :ref:`modify Python's search path <inst-search-path>` or edit
-:mod:`sitecustomize` (see :mod:`site`) to call :func:`site.addsitedir` or edit
-:data:`sys.path`.
-
-The :option:`!--home` option defines the installation base directory.  Files are
-installed to the following directories under the installation base as follows:
-
-=============== ===========================================================
-Type of file    Installation directory
-=============== ===========================================================
-modules         :file:`{home}/lib/python`
-scripts         :file:`{home}/bin`
-data            :file:`{home}`
-C headers       :file:`{home}/include/python/{distname}`
-=============== ===========================================================
-
-(Mentally replace slashes with backslashes if you're on Windows.)
-
-
-.. _inst-alt-install-prefix-unix:
-
-Alternate installation: Unix (the prefix scheme)
-------------------------------------------------
-
-The "prefix scheme" is useful when you wish to use one Python installation to
-perform the build/install (i.e., to run the setup script), but install modules
-into the third-party module directory of a different Python installation (or
-something that looks like a different Python installation).  If this sounds a
-trifle unusual, it is---that's why the user and home schemes come before.  However,
-there are at least two known cases where the prefix scheme will be useful.
-
-First, consider that many Linux distributions put Python in :file:`/usr`, rather
-than the more traditional :file:`/usr/local`.  This is entirely appropriate,
-since in those cases Python is part of "the system" rather than a local add-on.
-However, if you are installing Python modules from source, you probably want
-them to go in :file:`/usr/local/lib/python2.{X}` rather than
-:file:`/usr/lib/python2.{X}`.  This can be done with ::
-
-   /usr/bin/python setup.py install --prefix=/usr/local
-
-Another possibility is a network filesystem where the name used to write to a
-remote directory is different from the name used to read it: for example, the
-Python interpreter accessed as :file:`/usr/local/bin/python` might search for
-modules in :file:`/usr/local/lib/python2.{X}`, but those modules would have to
-be installed to, say, :file:`/mnt/{@server}/export/lib/python2.{X}`.  This could
-be done with ::
-
-   /usr/local/bin/python setup.py install --prefix=/mnt/@server/export
-
-In either case, the :option:`!--prefix` option defines the installation base, and
-the :option:`!--exec-prefix` option defines the platform-specific installation
-base, which is used for platform-specific files.  (Currently, this just means
-non-pure module distributions, but could be expanded to C libraries, binary
-executables, etc.)  If :option:`!--exec-prefix` is not supplied, it defaults to
-:option:`!--prefix`.  Files are installed as follows:
-
-================= ==========================================================
-Type of file      Installation directory
-================= ==========================================================
-Python modules    :file:`{prefix}/lib/python{X.Y}/site-packages`
-extension modules :file:`{exec-prefix}/lib/python{X.Y}/site-packages`
-scripts           :file:`{prefix}/bin`
-data              :file:`{prefix}`
-C headers         :file:`{prefix}/include/python{X.Y}{abiflags}/{distname}`
-================= ==========================================================
-
-There is no requirement that :option:`!--prefix` or :option:`!--exec-prefix`
-actually point to an alternate Python installation; if the directories listed
-above do not already exist, they are created at installation time.
-
-Incidentally, the real reason the prefix scheme is important is simply that a
-standard Unix installation uses the prefix scheme, but with :option:`!--prefix`
-and :option:`!--exec-prefix` supplied by Python itself as ``sys.prefix`` and
-``sys.exec_prefix``.  Thus, you might think you'll never use the prefix scheme,
-but every time you run ``python setup.py install`` without any other options,
-you're using it.
-
-Note that installing extensions to an alternate Python installation has no
-effect on how those extensions are built: in particular, the Python header files
-(:file:`Python.h` and friends) installed with the Python interpreter used to run
-the setup script will be used in compiling extensions.  It is your
-responsibility to ensure that the interpreter used to run extensions installed
-in this way is compatible with the interpreter used to build them.  The best way
-to do this is to ensure that the two interpreters are the same version of Python
-(possibly different builds, or possibly copies of the same build).  (Of course,
-if your :option:`!--prefix` and :option:`!--exec-prefix` don't even point to an
-alternate Python installation, this is immaterial.)
-
-
-.. _inst-alt-install-prefix-windows:
-
-Alternate installation: Windows (the prefix scheme)
----------------------------------------------------
-
-Windows has no concept of a user's home directory, and since the standard Python
-installation under Windows is simpler than under Unix, the :option:`!--prefix`
-option has traditionally been used to install additional packages in separate
-locations on Windows. ::
-
-   python setup.py install --prefix="\Temp\Python"
-
-to install modules to the :file:`\\Temp\\Python` directory on the current drive.
-
-The installation base is defined by the :option:`!--prefix` option; the
-:option:`!--exec-prefix` option is not supported under Windows, which means that
-pure Python modules and extension modules are installed into the same location.
-Files are installed as follows:
-
-=============== ==========================================================
-Type of file    Installation directory
-=============== ==========================================================
-modules         :file:`{prefix}\\Lib\\site-packages`
-scripts         :file:`{prefix}\\Scripts`
-data            :file:`{prefix}`
-C headers       :file:`{prefix}\\Include\\{distname}`
-=============== ==========================================================
-
-
-.. _inst-custom-install:
-
-Custom Installation
-===================
-
-Sometimes, the alternate installation schemes described in section
-:ref:`inst-alt-install` just don't do what you want.  You might want to tweak just
-one or two directories while keeping everything under the same base directory,
-or you might want to completely redefine the installation scheme.  In either
-case, you're creating a *custom installation scheme*.
-
-To create a custom installation scheme, you start with one of the alternate
-schemes and override some of the installation directories used for the various
-types of files, using these options:
-
-====================== =======================
-Type of file           Override option
-====================== =======================
-Python modules         ``--install-purelib``
-extension modules      ``--install-platlib``
-all modules            ``--install-lib``
-scripts                ``--install-scripts``
-data                   ``--install-data``
-C headers              ``--install-headers``
-====================== =======================
-
-These override options can be relative, absolute,
-or explicitly defined in terms of one of the installation base directories.
-(There are two installation base directories, and they are normally the
-same---they only differ when you use the Unix "prefix scheme" and supply
-different ``--prefix`` and ``--exec-prefix`` options; using ``--install-lib``
-will override values computed or given for ``--install-purelib`` and
-``--install-platlib``, and is recommended for schemes that don't make a
-difference between Python and extension modules.)
-
-For example, say you're installing a module distribution to your home directory
-under Unix---but you want scripts to go in :file:`~/scripts` rather than
-:file:`~/bin`. As you might expect, you can override this directory with the
-:option:`!--install-scripts` option; in this case, it makes most sense to supply
-a relative path, which will be interpreted relative to the installation base
-directory (your home directory, in this case)::
-
-   python setup.py install --home=~ --install-scripts=scripts
-
-Another Unix example: suppose your Python installation was built and installed
-with a prefix of :file:`/usr/local/python`, so under a standard  installation
-scripts will wind up in :file:`/usr/local/python/bin`.  If you want them in
-:file:`/usr/local/bin` instead, you would supply this absolute directory for the
-:option:`!--install-scripts` option::
-
-   python setup.py install --install-scripts=/usr/local/bin
-
-(This performs an installation using the "prefix scheme", where the prefix is
-whatever your Python interpreter was installed with--- :file:`/usr/local/python`
-in this case.)
-
-If you maintain Python on Windows, you might want third-party modules to live in
-a subdirectory of :file:`{prefix}`, rather than right in :file:`{prefix}`
-itself.  This is almost as easy as customizing the script installation
-directory---you just have to remember that there are two types of modules
-to worry about, Python and extension modules, which can conveniently be both
-controlled by one option::
-
-   python setup.py install --install-lib=Site
-
-The specified installation directory is relative to :file:`{prefix}`.  Of
-course, you also have to ensure that this directory is in Python's module
-search path, such as by putting a :file:`.pth` file in a site directory (see
-:mod:`site`).  See section :ref:`inst-search-path` to find out how to modify
-Python's search path.
-
-If you want to define an entire installation scheme, you just have to supply all
-of the installation directory options.  The recommended way to do this is to
-supply relative paths; for example, if you want to maintain all Python
-module-related files under :file:`python` in your home directory, and you want a
-separate directory for each platform that you use your home directory from, you
-might define the following installation scheme::
-
-   python setup.py install --home=~ \
-                           --install-purelib=python/lib \
-                           --install-platlib=python/lib.$PLAT \
-                           --install-scripts=python/scripts
-                           --install-data=python/data
-
-or, equivalently, ::
-
-   python setup.py install --home=~/python \
-                           --install-purelib=lib \
-                           --install-platlib='lib.$PLAT' \
-                           --install-scripts=scripts
-                           --install-data=data
-
-``$PLAT`` is not (necessarily) an environment variable---it will be expanded by
-the Distutils as it parses your command line options, just as it does when
-parsing your configuration file(s).
-
-Obviously, specifying the entire installation scheme every time you install a
-new module distribution would be very tedious.  Thus, you can put these options
-into your Distutils config file (see section :ref:`inst-config-files`):
-
-.. code-block:: ini
-
-   [install]
-   install-base=$HOME
-   install-purelib=python/lib
-   install-platlib=python/lib.$PLAT
-   install-scripts=python/scripts
-   install-data=python/data
-
-or, equivalently,
-
-.. code-block:: ini
-
-   [install]
-   install-base=$HOME/python
-   install-purelib=lib
-   install-platlib=lib.$PLAT
-   install-scripts=scripts
-   install-data=data
-
-Note that these two are *not* equivalent if you supply a different installation
-base directory when you run the setup script.  For example, ::
-
-   python setup.py install --install-base=/tmp
-
-would install pure modules to :file:`/tmp/python/lib` in the first case, and
-to :file:`/tmp/lib` in the second case.  (For the second case, you probably
-want to supply an installation base of :file:`/tmp/python`.)
-
-You probably noticed the use of ``$HOME`` and ``$PLAT`` in the sample
-configuration file input.  These are Distutils configuration variables, which
-bear a strong resemblance to environment variables. In fact, you can use
-environment variables in config files on platforms that have such a notion but
-the Distutils additionally define a few extra variables that may not be in your
-environment, such as ``$PLAT``.  (And of course, on systems that don't have
-environment variables, such as Mac OS 9, the configuration variables supplied by
-the Distutils are the only ones you can use.) See section :ref:`inst-config-files`
-for details.
-
-.. note:: When a :ref:`virtual environment <venv-def>` is activated, any options
-   that change the installation path will be ignored from all distutils configuration
-   files to prevent inadvertently installing projects outside of the virtual
-   environment.
-
-.. XXX need some Windows examples---when would custom installation schemes be
-   needed on those platforms?
-
-
-.. XXX Move this to Doc/using
-
-.. _inst-search-path:
-
-Modifying Python's Search Path
-------------------------------
-
-When the Python interpreter executes an :keyword:`import` statement, it searches
-for both Python code and extension modules along a search path.  A default value
-for the path is configured into the Python binary when the interpreter is built.
-You can determine the path by importing the :mod:`sys` module and printing the
-value of ``sys.path``.   ::
-
-   $ python
-   Python 2.2 (#11, Oct  3 2002, 13:31:27)
-   [GCC 2.96 20000731 (Red Hat Linux 7.3 2.96-112)] on linux2
-   Type "help", "copyright", "credits" or "license" for more information.
-   >>> import sys
-   >>> sys.path
-   ['', '/usr/local/lib/python2.3', '/usr/local/lib/python2.3/plat-linux2',
-    '/usr/local/lib/python2.3/lib-tk', '/usr/local/lib/python2.3/lib-dynload',
-    '/usr/local/lib/python2.3/site-packages']
-   >>>
-
-The null string in ``sys.path`` represents the current working directory.
-
-The expected convention for locally installed packages is to put them in the
-:file:`{...}/site-packages/` directory, but you may want to install Python
-modules into some arbitrary directory.  For example, your site may have a
-convention of keeping all software related to the web server under :file:`/www`.
-Add-on Python modules might then belong in :file:`/www/python`, and in order to
-import them, this directory must be added to ``sys.path``.  There are several
-different ways to add the directory.
-
-The most convenient way is to add a path configuration file to a directory
-that's already on Python's path, usually to the :file:`.../site-packages/`
-directory.  Path configuration files have an extension of :file:`.pth`, and each
-line must contain a single path that will be appended to ``sys.path``.  (Because
-the new paths are appended to ``sys.path``, modules in the added directories
-will not override standard modules.  This means you can't use this mechanism for
-installing fixed versions of standard modules.)
-
-Paths can be absolute or relative, in which case they're relative to the
-directory containing the :file:`.pth` file.  See the documentation of
-the :mod:`site` module for more information.
-
-A slightly less convenient way is to edit the :file:`site.py` file in Python's
-standard library, and modify ``sys.path``.  :file:`site.py` is automatically
-imported when the Python interpreter is executed, unless the :option:`-S` switch
-is supplied to suppress this behaviour.  So you could simply edit
-:file:`site.py` and add two lines to it:
-
-.. code-block:: python
-
-   import sys
-   sys.path.append('/www/python/')
-
-However, if you reinstall the same major version of Python (perhaps when
-upgrading from 2.2 to 2.2.2, for example) :file:`site.py` will be overwritten by
-the stock version.  You'd have to remember that it was modified and save a copy
-before doing the installation.
-
-There are two environment variables that can modify ``sys.path``.
-:envvar:`PYTHONHOME` sets an alternate value for the prefix of the Python
-installation.  For example, if :envvar:`PYTHONHOME` is set to ``/www/python``,
-the search path will be set to ``['', '/www/python/lib/pythonX.Y/',
-'/www/python/lib/pythonX.Y/plat-linux2', ...]``.
-
-The :envvar:`PYTHONPATH` variable can be set to a list of paths that will be
-added to the beginning of ``sys.path``.  For example, if :envvar:`PYTHONPATH` is
-set to ``/www/python:/opt/py``, the search path will begin with
-``['/www/python', '/opt/py']``.  (Note that directories must exist in order to
-be added to ``sys.path``; the :mod:`site` module removes paths that don't
-exist.)
-
-Finally, ``sys.path`` is just a regular Python list, so any Python application
-can modify it by adding or removing entries.
-
-
-.. _inst-config-files:
-
-Distutils Configuration Files
-=============================
-
-As mentioned above, you can use Distutils configuration files to record personal
-or site preferences for any Distutils options.  That is, any option to any
-command can be stored in one of two or three (depending on your platform)
-configuration files, which will be consulted before the command-line is parsed.
-This means that configuration files will override default values, and the
-command-line will in turn override configuration files.  Furthermore, if
-multiple configuration files apply, values from "earlier" files are overridden
-by "later" files.
-
-
-.. _inst-config-filenames:
-
-Location and names of config files
-----------------------------------
-
-The names and locations of the configuration files vary slightly across
-platforms.  On Unix and macOS, the three configuration files (in the order
-they are processed) are:
-
-+--------------+----------------------------------------------------------+-------+
-| Type of file | Location and filename                                    | Notes |
-+==============+==========================================================+=======+
-| system       | :file:`{prefix}/lib/python{ver}/distutils/distutils.cfg` | \(1)  |
-+--------------+----------------------------------------------------------+-------+
-| personal     | :file:`$HOME/.pydistutils.cfg`                           | \(2)  |
-+--------------+----------------------------------------------------------+-------+
-| local        | :file:`setup.cfg`                                        | \(3)  |
-+--------------+----------------------------------------------------------+-------+
-
-And on Windows, the configuration files are:
-
-+--------------+-------------------------------------------------+-------+
-| Type of file | Location and filename                           | Notes |
-+==============+=================================================+=======+
-| system       | :file:`{prefix}\\Lib\\distutils\\distutils.cfg` | \(4)  |
-+--------------+-------------------------------------------------+-------+
-| personal     | :file:`%HOME%\\pydistutils.cfg`                 | \(5)  |
-+--------------+-------------------------------------------------+-------+
-| local        | :file:`setup.cfg`                               | \(3)  |
-+--------------+-------------------------------------------------+-------+
-
-On all platforms, the "personal" file can be temporarily disabled by
-passing the ``--no-user-cfg`` option.
-
-Notes:
-
-(1)
-   Strictly speaking, the system-wide configuration file lives in the directory
-   where the Distutils are installed; under Python 1.6 and later on Unix, this is
-   as shown. For Python 1.5.2, the Distutils will normally be installed to
-   :file:`{prefix}/lib/python1.5/site-packages/distutils`, so the system
-   configuration file should be put there under Python 1.5.2.
-
-(2)
-   On Unix, if the :envvar:`HOME` environment variable is not defined, the user's
-   home directory will be determined with the :func:`getpwuid` function from the
-   standard :mod:`pwd` module. This is done by the :func:`os.path.expanduser`
-   function used by Distutils.
-
-(3)
-   I.e., in the current directory (usually the location of the setup script).
-
-(4)
-   (See also note (1).)  Under Python 1.6 and later, Python's default "installation
-   prefix" is :file:`C:\\Python`, so the system configuration file is normally
-   :file:`C:\\Python\\Lib\\distutils\\distutils.cfg`. Under Python 1.5.2, the
-   default prefix was :file:`C:\\Program Files\\Python`, and the Distutils were not
-   part of the standard library---so the system configuration file would be
-   :file:`C:\\Program Files\\Python\\distutils\\distutils.cfg` in a standard Python
-   1.5.2 installation under Windows.
-
-(5)
-   On Windows, if the :envvar:`HOME` environment variable is not defined,
-   :envvar:`USERPROFILE` then :envvar:`HOMEDRIVE` and :envvar:`HOMEPATH` will
-   be tried. This is done by the :func:`os.path.expanduser` function used
-   by Distutils.
-
-
-.. _inst-config-syntax:
-
-Syntax of config files
-----------------------
-
-The Distutils configuration files all have the same syntax.  The config files
-are grouped into sections.  There is one section for each Distutils command,
-plus a ``global`` section for global options that affect every command.  Each
-section consists of one option per line, specified as ``option=value``.
-
-For example, the following is a complete config file that just forces all
-commands to run quietly by default:
-
-.. code-block:: ini
-
-   [global]
-   verbose=0
-
-If this is installed as the system config file, it will affect all processing of
-any Python module distribution by any user on the current system.  If it is
-installed as your personal config file (on systems that support them), it will
-affect only module distributions processed by you.  And if it is used as the
-:file:`setup.cfg` for a particular module distribution, it affects only that
-distribution.
-
-You could override the default "build base" directory and make the
-:command:`build\*` commands always forcibly rebuild all files with the
-following:
-
-.. code-block:: ini
-
-   [build]
-   build-base=blib
-   force=1
-
-which corresponds to the command-line arguments ::
-
-   python setup.py build --build-base=blib --force
-
-except that including the :command:`build` command on the command-line means
-that command will be run.  Including a particular command in config files has no
-such implication; it only means that if the command is run, the options in the
-config file will apply.  (Or if other commands that derive values from it are
-run, they will use the values in the config file.)
-
-You can find out the complete list of options for any command using the
-:option:`!--help` option, e.g.::
-
-   python setup.py build --help
-
-and you can find out the complete list of global options by using
-:option:`!--help` without a command::
-
-   python setup.py --help
-
-See also the "Reference" section of the "Distributing Python Modules" manual.
-
-
-.. _inst-building-ext:
-
-Building Extensions: Tips and Tricks
-====================================
-
-Whenever possible, the Distutils try to use the configuration information made
-available by the Python interpreter used to run the :file:`setup.py` script.
-For example, the same compiler and linker flags used to compile Python will also
-be used for compiling extensions.  Usually this will work well, but in
-complicated situations this might be inappropriate.  This section discusses how
-to override the usual Distutils behaviour.
-
-
-.. _inst-tweak-flags:
-
-Tweaking compiler/linker flags
-------------------------------
-
-Compiling a Python extension written in C or C++ will sometimes require
-specifying custom flags for the compiler and linker in order to use a particular
-library or produce a special kind of object code. This is especially true if the
-extension hasn't been tested on your platform, or if you're trying to
-cross-compile Python.
-
-In the most general case, the extension author might have foreseen that
-compiling the extensions would be complicated, and provided a :file:`Setup` file
-for you to edit.  This will likely only be done if the module distribution
-contains many separate extension modules, or if they often require elaborate
-sets of compiler flags in order to work.
-
-A :file:`Setup` file, if present, is parsed in order to get a list of extensions
-to build.  Each line in a :file:`Setup` describes a single module.  Lines have
-the following structure::
-
-   module ... [sourcefile ...] [cpparg ...] [library ...]
-
-
-Let's examine each of the fields in turn.
-
-* *module* is the name of the extension module to be built, and should be a
-  valid Python identifier.  You can't just change this in order to rename a module
-  (edits to the source code would also be needed), so this should be left alone.
-
-* *sourcefile* is anything that's likely to be a source code file, at least
-  judging by the filename.  Filenames ending in :file:`.c` are assumed to be
-  written in C, filenames ending in :file:`.C`, :file:`.cc`, and :file:`.c++` are
-  assumed to be C++, and filenames ending in :file:`.m` or :file:`.mm` are assumed
-  to be in Objective C.
-
-* *cpparg* is an argument for the C preprocessor,  and is anything starting with
-  :option:`!-I`, :option:`!-D`, :option:`!-U` or :option:`!-C`.
-
-* *library* is anything ending in :file:`.a` or beginning with :option:`!-l` or
-  :option:`!-L`.
-
-If a particular platform requires a special library on your platform, you can
-add it by editing the :file:`Setup` file and running ``python setup.py build``.
-For example, if the module defined by the line ::
-
-   foo foomodule.c
-
-must be linked with the math library :file:`libm.a` on your platform, simply add
-:option:`!-lm` to the line::
-
-   foo foomodule.c -lm
-
-Arbitrary switches intended for the compiler or the linker can be supplied with
-the :option:`!-Xcompiler` *arg* and :option:`!-Xlinker` *arg* options::
-
-   foo foomodule.c -Xcompiler -o32 -Xlinker -shared -lm
-
-The next option after :option:`!-Xcompiler` and :option:`!-Xlinker` will be
-appended to the proper command line, so in the above example the compiler will
-be passed the :option:`!-o32` option, and the linker will be passed
-:option:`!-shared`.  If a compiler option requires an argument, you'll have to
-supply multiple :option:`!-Xcompiler` options; for example, to pass ``-x c++``
-the :file:`Setup` file would have to contain ``-Xcompiler -x -Xcompiler c++``.
-
-Compiler flags can also be supplied through setting the :envvar:`CFLAGS`
-environment variable.  If set, the contents of :envvar:`CFLAGS` will be added to
-the compiler flags specified in the  :file:`Setup` file.
-
-
-.. _inst-non-ms-compilers:
-
-Using non-Microsoft compilers on Windows
-----------------------------------------
-
-.. sectionauthor:: Rene Liebscher <R.Liebscher@gmx.de>
-
-
-
-Borland/CodeGear C++
-^^^^^^^^^^^^^^^^^^^^
-
-This subsection describes the necessary steps to use Distutils with the Borland
-C++ compiler version 5.5.  First you have to know that Borland's object file
-format (OMF) is different from the format used by the Python version you can
-download from the Python or ActiveState web site.  (Python is built with
-Microsoft Visual C++, which uses COFF as the object file format.) For this
-reason you have to convert Python's library :file:`python25.lib` into the
-Borland format.  You can do this as follows:
-
-.. Should we mention that users have to create cfg-files for the compiler?
-.. see also http://community.borland.com/article/0,1410,21205,00.html
-
-::
-
-   coff2omf python25.lib python25_bcpp.lib
-
-The :file:`coff2omf` program comes with the Borland compiler.  The file
-:file:`python25.lib` is in the :file:`Libs` directory of your Python
-installation.  If your extension uses other libraries (zlib, ...) you have to
-convert them too.
-
-The converted files have to reside in the same directories as the normal
-libraries.
-
-How does Distutils manage to use these libraries with their changed names?  If
-the extension needs a library (eg. :file:`foo`) Distutils checks first if it
-finds a library with suffix :file:`_bcpp` (eg. :file:`foo_bcpp.lib`) and then
-uses this library.  In the case it doesn't find such a special library it uses
-the default name (:file:`foo.lib`.) [#]_
-
-To let Distutils compile your extension with Borland C++ you now have to type::
-
-   python setup.py build --compiler=bcpp
-
-If you want to use the Borland C++ compiler as the default, you could specify
-this in your personal or system-wide configuration file for Distutils (see
-section :ref:`inst-config-files`.)
-
-
-.. seealso::
-
-   `C++Builder Compiler <https://www.embarcadero.com/products>`_
-      Information about the free C++ compiler from Borland, including links to the
-      download pages.
-
-   `Creating Python Extensions Using Borland's Free Compiler <http://www.cyberus.ca/~g_will/pyExtenDL.shtml>`_
-      Document describing how to use Borland's free command-line C++ compiler to build
-      Python.
-
-
-GNU C / Cygwin / MinGW
-^^^^^^^^^^^^^^^^^^^^^^
-
-This section describes the necessary steps to use Distutils with the GNU C/C++
-compilers in their Cygwin and MinGW distributions. [#]_ For a Python interpreter
-that was built with Cygwin, everything should work without any of these
-following steps.
-
-Not all extensions can be built with MinGW or Cygwin, but many can.  Extensions
-most likely to not work are those that use C++ or depend on Microsoft Visual C
-extensions.
-
-To let Distutils compile your extension with Cygwin you have to type::
-
-   python setup.py build --compiler=cygwin
-
-and for Cygwin in no-cygwin mode [#]_ or for MinGW type::
-
-   python setup.py build --compiler=mingw32
-
-If you want to use any of these options/compilers as default, you should
-consider writing it in your personal or system-wide configuration file for
-Distutils (see section :ref:`inst-config-files`.)
-
-Older Versions of Python and MinGW
-""""""""""""""""""""""""""""""""""
-The following instructions only apply if you're using a version of Python
-inferior to 2.4.1 with a MinGW inferior to 3.0.0 (with
-binutils-2.13.90-20030111-1).
-
-These compilers require some special libraries.  This task is more complex than
-for Borland's C++, because there is no program to convert the library.  First
-you have to create a list of symbols which the Python DLL exports. (You can find
-a good program for this task at
-https://sourceforge.net/projects/mingw/files/MinGW/Extension/pexports/).
-
-.. I don't understand what the next line means. --amk
-.. (inclusive the references on data structures.)
-
-::
-
-   pexports python25.dll >python25.def
-
-The location of an installed :file:`python25.dll` will depend on the
-installation options and the version and language of Windows.  In a "just for
-me" installation, it will appear in the root of the installation directory.  In
-a shared installation, it will be located in the system directory.
-
-Then you can create from these information an import library for gcc. ::
-
-   /cygwin/bin/dlltool --dllname python25.dll --def python25.def --output-lib libpython25.a
-
-The resulting library has to be placed in the same directory as
-:file:`python25.lib`. (Should be the :file:`libs` directory under your Python
-installation directory.)
-
-If your extension uses other libraries (zlib,...) you might  have to convert
-them too. The converted files have to reside in the same directories as the
-normal libraries do.
-
-
-.. seealso::
-
-   `Building Python modules on MS Windows platform with MinGW <https://old.zope.dev/Members/als/tips/win32_mingw_modules>`_
-      Information about building the required libraries for the MinGW environment.
-
-
-.. rubric:: Footnotes
-
-.. [#] This also means you could replace all existing COFF-libraries with OMF-libraries
-   of the same name.
-
-.. [#] Check https://www.sourceware.org/cygwin/ for more information
-
-.. [#] Then you have no POSIX emulation available, but you also don't need
-   :file:`cygwin1.dll`.
diff --git a/Doc/installing/index.rst b/Doc/installing/index.rst
index 5aec5178d48f3d..a46c1caefe4d8a 100644
--- a/Doc/installing/index.rst
+++ b/Doc/installing/index.rst
@@ -19,7 +19,9 @@ solutions to the common pool.
 
 This guide covers the installation part of the process. For a guide to
 creating and sharing your own Python projects, refer to the
-:ref:`distribution guide <distributing-index>`.
+`Python packaging user guide`_.
+
+.. _Python Packaging User Guide: https://packaging.python.org/en/latest/tutorials/packaging-projects/
 
 .. note::
 
diff --git a/Doc/library/2to3.rst b/Doc/library/2to3.rst
deleted file mode 100644
index d85ad94e9b7fe4..00000000000000
--- a/Doc/library/2to3.rst
+++ /dev/null
@@ -1,489 +0,0 @@
-.. _2to3-reference:
-
-2to3 --- Automated Python 2 to 3 code translation
-=================================================
-
-.. sectionauthor:: Benjamin Peterson <benjamin@python.org>
-
-2to3 is a Python program that reads Python 2.x source code and applies a series
-of *fixers* to transform it into valid Python 3.x code.  The standard library
-contains a rich set of fixers that will handle almost all code.  2to3 supporting
-library :mod:`lib2to3` is, however, a flexible and generic library, so it is
-possible to write your own fixers for 2to3.
-
-.. deprecated-removed:: 3.11 3.13
-   The ``lib2to3`` module was marked pending for deprecation in Python 3.9
-   (raising :exc:`PendingDeprecationWarning` on import) and fully deprecated
-   in Python 3.11 (raising :exc:`DeprecationWarning`).  The ``2to3`` tool is
-   part of that.  It will be removed in Python 3.13.
-
-.. _2to3-using:
-
-Using 2to3
-----------
-
-2to3 will usually be installed with the Python interpreter as a script.  It is
-also located in the :file:`Tools/scripts` directory of the Python root.
-
-2to3's basic arguments are a list of files or directories to transform.  The
-directories are recursively traversed for Python sources.
-
-Here is a sample Python 2.x source file, :file:`example.py`::
-
-   def greet(name):
-       print "Hello, {0}!".format(name)
-   print "What's your name?"
-   name = raw_input()
-   greet(name)
-
-It can be converted to Python 3.x code via 2to3 on the command line:
-
-.. code-block:: shell-session
-
-   $ 2to3 example.py
-
-A diff against the original source file is printed.  2to3 can also write the
-needed modifications right back to the source file.  (A backup of the original
-file is made unless :option:`!-n` is also given.)  Writing the changes back is
-enabled with the :option:`!-w` flag:
-
-.. code-block:: shell-session
-
-   $ 2to3 -w example.py
-
-After transformation, :file:`example.py` looks like this::
-
-   def greet(name):
-       print("Hello, {0}!".format(name))
-   print("What's your name?")
-   name = input()
-   greet(name)
-
-Comments and exact indentation are preserved throughout the translation process.
-
-By default, 2to3 runs a set of :ref:`predefined fixers <2to3-fixers>`.  The
-:option:`!-l` flag lists all available fixers.  An explicit set of fixers to run
-can be given with :option:`!-f`.  Likewise the :option:`!-x` explicitly disables a
-fixer.  The following example runs only the ``imports`` and ``has_key`` fixers:
-
-.. code-block:: shell-session
-
-   $ 2to3 -f imports -f has_key example.py
-
-This command runs every fixer except the ``apply`` fixer:
-
-.. code-block:: shell-session
-
-   $ 2to3 -x apply example.py
-
-Some fixers are *explicit*, meaning they aren't run by default and must be
-listed on the command line to be run.  Here, in addition to the default fixers,
-the ``idioms`` fixer is run:
-
-.. code-block:: shell-session
-
-   $ 2to3 -f all -f idioms example.py
-
-Notice how passing ``all`` enables all default fixers.
-
-Sometimes 2to3 will find a place in your source code that needs to be changed,
-but 2to3 cannot fix automatically.  In this case, 2to3 will print a warning
-beneath the diff for a file.  You should address the warning in order to have
-compliant 3.x code.
-
-2to3 can also refactor doctests.  To enable this mode, use the :option:`!-d`
-flag.  Note that *only* doctests will be refactored.  This also doesn't require
-the module to be valid Python.  For example, doctest like examples in a reST
-document could also be refactored with this option.
-
-The :option:`!-v` option enables output of more information on the translation
-process.
-
-Since some print statements can be parsed as function calls or statements, 2to3
-cannot always read files containing the print function.  When 2to3 detects the
-presence of the ``from __future__ import print_function`` compiler directive, it
-modifies its internal grammar to interpret :func:`print` as a function.  This
-change can also be enabled manually with the :option:`!-p` flag.  Use
-:option:`!-p` to run fixers on code that already has had its print statements
-converted. Also :option:`!-e` can be used to make :func:`exec` a function.
-
-The :option:`!-o` or :option:`!--output-dir` option allows specification of an
-alternate directory for processed output files to be written to.  The
-:option:`!-n` flag is required when using this as backup files do not make sense
-when not overwriting the input files.
-
-.. versionadded:: 3.2.3
-   The :option:`!-o` option was added.
-
-The :option:`!-W` or :option:`!--write-unchanged-files` flag tells 2to3 to always
-write output files even if no changes were required to the file.  This is most
-useful with :option:`!-o` so that an entire Python source tree is copied with
-translation from one directory to another.
-This option implies the :option:`!-w` flag as it would not make sense otherwise.
-
-.. versionadded:: 3.2.3
-   The :option:`!-W` flag was added.
-
-The :option:`!--add-suffix` option specifies a string to append to all output
-filenames.  The :option:`!-n` flag is required when specifying this as backups
-are not necessary when writing to different filenames.  Example:
-
-.. code-block:: shell-session
-
-   $ 2to3 -n -W --add-suffix=3 example.py
-
-Will cause a converted file named ``example.py3`` to be written.
-
-.. versionadded:: 3.2.3
-   The :option:`!--add-suffix` option was added.
-
-To translate an entire project from one directory tree to another use:
-
-.. code-block:: shell-session
-
-   $ 2to3 --output-dir=python3-version/mycode -W -n python2-version/mycode
-
-
-.. _2to3-fixers:
-
-Fixers
-------
-
-Each step of transforming code is encapsulated in a fixer.  The command ``2to3
--l`` lists them.  As :ref:`documented above <2to3-using>`, each can be turned on
-and off individually.  They are described here in more detail.
-
-
-.. 2to3fixer:: apply
-
-   Removes usage of :func:`apply`.  For example ``apply(function, *args,
-   **kwargs)`` is converted to ``function(*args, **kwargs)``.
-
-.. 2to3fixer:: asserts
-
-   Replaces deprecated :mod:`unittest` method names with the correct ones.
-
-   ================================  ==========================================
-   From                              To
-   ================================  ==========================================
-   ``failUnlessEqual(a, b)``         :meth:`assertEqual(a, b)
-                                     <unittest.TestCase.assertEqual>`
-   ``assertEquals(a, b)``            :meth:`assertEqual(a, b)
-                                     <unittest.TestCase.assertEqual>`
-   ``failIfEqual(a, b)``             :meth:`assertNotEqual(a, b)
-                                     <unittest.TestCase.assertNotEqual>`
-   ``assertNotEquals(a, b)``         :meth:`assertNotEqual(a, b)
-                                     <unittest.TestCase.assertNotEqual>`
-   ``failUnless(a)``                 :meth:`assertTrue(a)
-                                     <unittest.TestCase.assertTrue>`
-   ``assert_(a)``                    :meth:`assertTrue(a)
-                                     <unittest.TestCase.assertTrue>`
-   ``failIf(a)``                     :meth:`assertFalse(a)
-                                     <unittest.TestCase.assertFalse>`
-   ``failUnlessRaises(exc, cal)``    :meth:`assertRaises(exc, cal)
-                                     <unittest.TestCase.assertRaises>`
-   ``failUnlessAlmostEqual(a, b)``   :meth:`assertAlmostEqual(a, b)
-                                     <unittest.TestCase.assertAlmostEqual>`
-   ``assertAlmostEquals(a, b)``      :meth:`assertAlmostEqual(a, b)
-                                     <unittest.TestCase.assertAlmostEqual>`
-   ``failIfAlmostEqual(a, b)``       :meth:`assertNotAlmostEqual(a, b)
-                                     <unittest.TestCase.assertNotAlmostEqual>`
-   ``assertNotAlmostEquals(a, b)``   :meth:`assertNotAlmostEqual(a, b)
-                                     <unittest.TestCase.assertNotAlmostEqual>`
-   ================================  ==========================================
-
-.. 2to3fixer:: basestring
-
-   Converts :class:`basestring` to :class:`str`.
-
-.. 2to3fixer:: buffer
-
-   Converts :class:`buffer` to :class:`memoryview`.  This fixer is optional
-   because the :class:`memoryview` API is similar but not exactly the same as
-   that of :class:`buffer`.
-
-.. 2to3fixer:: dict
-
-   Fixes dictionary iteration methods.  :meth:`dict.iteritems` is converted to
-   :meth:`dict.items`, :meth:`dict.iterkeys` to :meth:`dict.keys`, and
-   :meth:`dict.itervalues` to :meth:`dict.values`.  Similarly,
-   :meth:`dict.viewitems`, :meth:`dict.viewkeys` and :meth:`dict.viewvalues` are
-   converted respectively to :meth:`dict.items`, :meth:`dict.keys` and
-   :meth:`dict.values`.  It also wraps existing usages of :meth:`dict.items`,
-   :meth:`dict.keys`, and :meth:`dict.values` in a call to :class:`list`.
-
-.. 2to3fixer:: except
-
-   Converts ``except X, T`` to ``except X as T``.
-
-.. 2to3fixer:: exec
-
-   Converts the ``exec`` statement to the :func:`exec` function.
-
-.. 2to3fixer:: execfile
-
-   Removes usage of :func:`execfile`.  The argument to :func:`execfile` is
-   wrapped in calls to :func:`open`, :func:`compile`, and :func:`exec`.
-
-.. 2to3fixer:: exitfunc
-
-   Changes assignment of :attr:`sys.exitfunc` to use of the :mod:`atexit`
-   module.
-
-.. 2to3fixer:: filter
-
-   Wraps :func:`filter` usage in a :class:`list` call.
-
-.. 2to3fixer:: funcattrs
-
-   Fixes function attributes that have been renamed.  For example,
-   ``my_function.func_closure`` is converted to ``my_function.__closure__``.
-
-.. 2to3fixer:: future
-
-   Removes ``from __future__ import new_feature`` statements.
-
-.. 2to3fixer:: getcwdu
-
-   Renames :func:`os.getcwdu` to :func:`os.getcwd`.
-
-.. 2to3fixer:: has_key
-
-   Changes ``dict.has_key(key)`` to ``key in dict``.
-
-.. 2to3fixer:: idioms
-
-   This optional fixer performs several transformations that make Python code
-   more idiomatic.  Type comparisons like ``type(x) is SomeClass`` and
-   ``type(x) == SomeClass`` are converted to ``isinstance(x, SomeClass)``.
-   ``while 1`` becomes ``while True``.  This fixer also tries to make use of
-   :func:`sorted` in appropriate places.  For example, this block ::
-
-       L = list(some_iterable)
-       L.sort()
-
-   is changed to ::
-
-      L = sorted(some_iterable)
-
-.. 2to3fixer:: import
-
-   Detects sibling imports and converts them to relative imports.
-
-.. 2to3fixer:: imports
-
-   Handles module renames in the standard library.
-
-.. 2to3fixer:: imports2
-
-   Handles other modules renames in the standard library.  It is separate from
-   the :2to3fixer:`imports` fixer only because of technical limitations.
-
-.. 2to3fixer:: input
-
-   Converts ``input(prompt)`` to ``eval(input(prompt))``.
-
-.. 2to3fixer:: intern
-
-   Converts :func:`intern` to :func:`sys.intern`.
-
-.. 2to3fixer:: isinstance
-
-   Fixes duplicate types in the second argument of :func:`isinstance`.  For
-   example, ``isinstance(x, (int, int))`` is converted to ``isinstance(x,
-   int)`` and ``isinstance(x, (int, float, int))`` is converted to
-   ``isinstance(x, (int, float))``.
-
-.. 2to3fixer:: itertools_imports
-
-   Removes imports of :func:`itertools.ifilter`, :func:`itertools.izip`, and
-   :func:`itertools.imap`.  Imports of :func:`itertools.ifilterfalse` are also
-   changed to :func:`itertools.filterfalse`.
-
-.. 2to3fixer:: itertools
-
-   Changes usage of :func:`itertools.ifilter`, :func:`itertools.izip`, and
-   :func:`itertools.imap` to their built-in equivalents.
-   :func:`itertools.ifilterfalse` is changed to :func:`itertools.filterfalse`.
-
-.. 2to3fixer:: long
-
-   Renames :class:`long` to :class:`int`.
-
-.. 2to3fixer:: map
-
-   Wraps :func:`map` in a :class:`list` call.  It also changes ``map(None, x)``
-   to ``list(x)``.  Using ``from future_builtins import map`` disables this
-   fixer.
-
-.. 2to3fixer:: metaclass
-
-   Converts the old metaclass syntax (``__metaclass__ = Meta`` in the class
-   body) to the new (``class X(metaclass=Meta)``).
-
-.. 2to3fixer:: methodattrs
-
-   Fixes old method attribute names.  For example, ``meth.im_func`` is converted
-   to ``meth.__func__``.
-
-.. 2to3fixer:: ne
-
-   Converts the old not-equal syntax, ``<>``, to ``!=``.
-
-.. 2to3fixer:: next
-
-   Converts the use of iterator's :meth:`~iterator.next` methods to the
-   :func:`next` function.  It also renames :meth:`next` methods to
-   :meth:`~iterator.__next__`.
-
-.. 2to3fixer:: nonzero
-
-   Renames definitions of methods called :meth:`__nonzero__`
-   to :meth:`~object.__bool__`.
-
-.. 2to3fixer:: numliterals
-
-   Converts octal literals into the new syntax.
-
-.. 2to3fixer:: operator
-
-   Converts calls to various functions in the :mod:`operator` module to other,
-   but equivalent, function calls.  When needed, the appropriate ``import``
-   statements are added, e.g. ``import collections.abc``.  The following mapping
-   are made:
-
-   ==================================  =============================================
-   From                                To
-   ==================================  =============================================
-   ``operator.isCallable(obj)``        ``callable(obj)``
-   ``operator.sequenceIncludes(obj)``  ``operator.contains(obj)``
-   ``operator.isSequenceType(obj)``    ``isinstance(obj, collections.abc.Sequence)``
-   ``operator.isMappingType(obj)``     ``isinstance(obj, collections.abc.Mapping)``
-   ``operator.isNumberType(obj)``      ``isinstance(obj, numbers.Number)``
-   ``operator.repeat(obj, n)``         ``operator.mul(obj, n)``
-   ``operator.irepeat(obj, n)``        ``operator.imul(obj, n)``
-   ==================================  =============================================
-
-.. 2to3fixer:: paren
-
-   Add extra parenthesis where they are required in list comprehensions.  For
-   example, ``[x for x in 1, 2]`` becomes ``[x for x in (1, 2)]``.
-
-.. 2to3fixer:: print
-
-   Converts the ``print`` statement to the :func:`print` function.
-
-.. 2to3fixer:: raise
-
-   Converts ``raise E, V`` to ``raise E(V)``, and ``raise E, V, T`` to ``raise
-   E(V).with_traceback(T)``.  If ``E`` is a tuple, the translation will be
-   incorrect because substituting tuples for exceptions has been removed in 3.0.
-
-.. 2to3fixer:: raw_input
-
-   Converts :func:`raw_input` to :func:`input`.
-
-.. 2to3fixer:: reduce
-
-   Handles the move of :func:`reduce` to :func:`functools.reduce`.
-
-.. 2to3fixer:: reload
-
-   Converts :func:`reload` to :func:`importlib.reload`.
-
-.. 2to3fixer:: renames
-
-   Changes :data:`sys.maxint` to :data:`sys.maxsize`.
-
-.. 2to3fixer:: repr
-
-   Replaces backtick repr with the :func:`repr` function.
-
-.. 2to3fixer:: set_literal
-
-   Replaces use of the :class:`set` constructor with set literals.  This fixer
-   is optional.
-
-.. 2to3fixer:: standarderror
-
-   Renames :exc:`StandardError` to :exc:`Exception`.
-
-.. 2to3fixer:: sys_exc
-
-   Changes the deprecated :data:`sys.exc_value`, :data:`sys.exc_type`,
-   :data:`sys.exc_traceback` to use :func:`sys.exc_info`.
-
-.. 2to3fixer:: throw
-
-   Fixes the API change in generator's :meth:`throw` method.
-
-.. 2to3fixer:: tuple_params
-
-   Removes implicit tuple parameter unpacking.  This fixer inserts temporary
-   variables.
-
-.. 2to3fixer:: types
-
-   Fixes code broken from the removal of some members in the :mod:`types`
-   module.
-
-.. 2to3fixer:: unicode
-
-   Renames :class:`unicode` to :class:`str`.
-
-.. 2to3fixer:: urllib
-
-   Handles the rename of :mod:`urllib` and :mod:`urllib2` to the :mod:`urllib`
-   package.
-
-.. 2to3fixer:: ws_comma
-
-   Removes excess whitespace from comma separated items.  This fixer is
-   optional.
-
-.. 2to3fixer:: xrange
-
-   Renames :func:`xrange` to :func:`range` and wraps existing :func:`range`
-   calls with :class:`list`.
-
-.. 2to3fixer:: xreadlines
-
-   Changes ``for x in file.xreadlines()`` to ``for x in file``.
-
-.. 2to3fixer:: zip
-
-   Wraps :func:`zip` usage in a :class:`list` call.  This is disabled when
-   ``from future_builtins import zip`` appears.
-
-
-:mod:`lib2to3` --- 2to3's library
----------------------------------
-
-.. module:: lib2to3
-   :synopsis: The 2to3 library
-
-.. moduleauthor:: Guido van Rossum
-.. moduleauthor:: Collin Winter
-.. moduleauthor:: Benjamin Peterson <benjamin@python.org>
-
-**Source code:** :source:`Lib/lib2to3/`
-
---------------
-
-.. deprecated-removed:: 3.11 3.13
-   Python 3.9 switched to a PEG parser (see :pep:`617`) while lib2to3 is
-   using a less flexible LL(1) parser.  Python 3.10 includes new language
-   syntax that is not parsable by lib2to3's LL(1) parser (see :pep:`634`).
-   The ``lib2to3`` module was marked pending for deprecation in Python 3.9
-   (raising :exc:`PendingDeprecationWarning` on import) and fully deprecated
-   in Python 3.11 (raising :exc:`DeprecationWarning`).
-   It will be removed from the standard library in Python 3.13.
-   Consider third-party alternatives such as `LibCST`_ or `parso`_.
-
-.. note::
-
-   The :mod:`lib2to3` API should be considered unstable and may change
-   drastically in the future.
-
-.. _LibCST: https://libcst.readthedocs.io/
-.. _parso: https://parso.readthedocs.io/
diff --git a/Doc/library/__future__.rst b/Doc/library/__future__.rst
index 8bd23daee73977..d261e4a4f338a5 100644
--- a/Doc/library/__future__.rst
+++ b/Doc/library/__future__.rst
@@ -22,42 +22,48 @@
   can be inspected programmatically via importing :mod:`__future__` and examining
   its contents.
 
-Each statement in :file:`__future__.py` is of the form::
+.. _future-classes:
 
-   FeatureName = _Feature(OptionalRelease, MandatoryRelease,
-                          CompilerFlag)
+.. class:: _Feature
 
+   Each statement in :file:`__future__.py` is of the form::
 
-where, normally, *OptionalRelease* is less than *MandatoryRelease*, and both are
-5-tuples of the same form as :data:`sys.version_info`::
+      FeatureName = _Feature(OptionalRelease, MandatoryRelease,
+                             CompilerFlag)
 
-   (PY_MAJOR_VERSION, # the 2 in 2.1.0a3; an int
-    PY_MINOR_VERSION, # the 1; an int
-    PY_MICRO_VERSION, # the 0; an int
-    PY_RELEASE_LEVEL, # "alpha", "beta", "candidate" or "final"; string
-    PY_RELEASE_SERIAL # the 3; an int
-   )
+   where, normally, *OptionalRelease* is less than *MandatoryRelease*, and both are
+   5-tuples of the same form as :data:`sys.version_info`::
 
-*OptionalRelease* records the first release in which the feature was accepted.
+      (PY_MAJOR_VERSION, # the 2 in 2.1.0a3; an int
+       PY_MINOR_VERSION, # the 1; an int
+       PY_MICRO_VERSION, # the 0; an int
+       PY_RELEASE_LEVEL, # "alpha", "beta", "candidate" or "final"; string
+       PY_RELEASE_SERIAL # the 3; an int
+      )
 
-In the case of a *MandatoryRelease* that has not yet occurred,
-*MandatoryRelease* predicts the release in which the feature will become part of
-the language.
+.. method:: _Feature.getOptionalRelease()
 
-Else *MandatoryRelease* records when the feature became part of the language; in
-releases at or after that, modules no longer need a future statement to use the
-feature in question, but may continue to use such imports.
+   *OptionalRelease* records the first release in which the feature was accepted.
 
-*MandatoryRelease* may also be ``None``, meaning that a planned feature got
-dropped.
+.. method:: _Feature.getMandatoryRelease()
 
-Instances of class :class:`_Feature` have two corresponding methods,
-:meth:`getOptionalRelease` and :meth:`getMandatoryRelease`.
+   In the case of a *MandatoryRelease* that has not yet occurred,
+   *MandatoryRelease* predicts the release in which the feature will become part of
+   the language.
 
-*CompilerFlag* is the (bitfield) flag that should be passed in the fourth
-argument to the built-in function :func:`compile` to enable the feature in
-dynamically compiled code.  This flag is stored in the :attr:`compiler_flag`
-attribute on :class:`_Feature` instances.
+   Else *MandatoryRelease* records when the feature became part of the language; in
+   releases at or after that, modules no longer need a future statement to use the
+   feature in question, but may continue to use such imports.
+
+   *MandatoryRelease* may also be ``None``, meaning that a planned feature got
+   dropped or that it is not yet decided.
+
+.. attribute:: _Feature.compiler_flag
+
+   *CompilerFlag* is the (bitfield) flag that should be passed in the fourth
+   argument to the built-in function :func:`compile` to enable the feature in
+   dynamically compiled code.  This flag is stored in the :attr:`_Feature.compiler_flag`
+   attribute on :class:`_Feature` instances.
 
 No feature description will ever be deleted from :mod:`__future__`. Since its
 introduction in Python 2.1 the following features have found their way into the
diff --git a/Doc/library/__main__.rst b/Doc/library/__main__.rst
index d29cbdff7830c8..c999253f781b10 100644
--- a/Doc/library/__main__.rst
+++ b/Doc/library/__main__.rst
@@ -54,45 +54,45 @@ The top-level code environment can be:
 
 * the scope of an interactive prompt::
 
-    >>> __name__
-    '__main__'
+   >>> __name__
+   '__main__'
 
 * the Python module passed to the Python interpreter as a file argument:
 
-    .. code-block:: shell-session
+  .. code-block:: shell-session
 
-       $ python helloworld.py
-       Hello, world!
+     $ python helloworld.py
+     Hello, world!
 
 * the Python module or package passed to the Python interpreter with the
   :option:`-m` argument:
 
-    .. code-block:: shell-session
+  .. code-block:: shell-session
 
-       $ python -m tarfile
-       usage: tarfile.py [-h] [-v] (...)
+     $ python -m tarfile
+     usage: tarfile.py [-h] [-v] (...)
 
 * Python code read by the Python interpreter from standard input:
 
-    .. code-block:: shell-session
+  .. code-block:: shell-session
 
-       $ echo "import this" | python
-       The Zen of Python, by Tim Peters
+     $ echo "import this" | python
+     The Zen of Python, by Tim Peters
 
-       Beautiful is better than ugly.
-       Explicit is better than implicit.
-       ...
+     Beautiful is better than ugly.
+     Explicit is better than implicit.
+     ...
 
 * Python code passed to the Python interpreter with the :option:`-c` argument:
 
-    .. code-block:: shell-session
+  .. code-block:: shell-session
 
-       $ python -c "import this"
-       The Zen of Python, by Tim Peters
+     $ python -c "import this"
+     The Zen of Python, by Tim Peters
 
-       Beautiful is better than ugly.
-       Explicit is better than implicit.
-       ...
+     Beautiful is better than ugly.
+     Explicit is better than implicit.
+     ...
 
 In each of these situations, the top-level module's ``__name__`` is set to
 ``'__main__'``.
@@ -102,9 +102,9 @@ top-level environment by checking its own ``__name__``, which allows a common
 idiom for conditionally executing code when the module is not initialized from
 an import statement::
 
-    if __name__ == '__main__':
-        # Execute when the module is not initialized from an import statement.
-        ...
+   if __name__ == '__main__':
+       # Execute when the module is not initialized from an import statement.
+       ...
 
 .. seealso::
 
@@ -227,7 +227,7 @@ students::
     import sys
     from .student import search_students
 
-    student_name = sys.argv[2] if len(sys.argv) >= 2 else ''
+    student_name = sys.argv[1] if len(sys.argv) >= 2 else ''
     print(f'Found student: {search_students(student_name)}')
 
 Note that ``from .student import search_students`` is an example of a relative
@@ -238,9 +238,9 @@ package.  For more details, see :ref:`intra-package-references` in the
 Idiomatic Usage
 ^^^^^^^^^^^^^^^
 
-The contents of ``__main__.py`` typically isn't fenced with
-``if __name__ == '__main__'`` blocks.  Instead, those files are kept short,
-functions to execute from other modules.  Those other modules can then be
+The content of ``__main__.py`` typically isn't fenced with an
+``if __name__ == '__main__'`` block.  Instead, those files are kept
+short and import functions to execute from other modules.  Those other modules can then be
 easily unit-tested and are properly reusable.
 
 If used, an ``if __name__ == '__main__'`` block will still work as expected
@@ -336,12 +336,12 @@ Note that importing ``__main__`` doesn't cause any issues with unintentionally
 running top-level code meant for script use which is put in the
 ``if __name__ == "__main__"`` block of the ``start`` module. Why does this work?
 
-Python inserts an empty ``__main__`` module in :attr:`sys.modules` at
+Python inserts an empty ``__main__`` module in :data:`sys.modules` at
 interpreter startup, and populates it by running top-level code. In our example
 this is the ``start`` module which runs line by line and imports ``namely``.
 In turn, ``namely`` imports ``__main__`` (which is really ``start``). That's an
 import cycle! Fortunately, since the partially populated ``__main__``
-module is present in :attr:`sys.modules`, Python passes that to ``namely``.
+module is present in :data:`sys.modules`, Python passes that to ``namely``.
 See :ref:`Special considerations for __main__ <import-dunder-main>` in the
 import system's reference for details on how this works.
 
diff --git a/Doc/library/_thread.rst b/Doc/library/_thread.rst
index ba9314e46ab6ea..297f50a46e0692 100644
--- a/Doc/library/_thread.rst
+++ b/Doc/library/_thread.rst
@@ -70,10 +70,10 @@ This module defines the following constants and functions:
    there is no guarantee that the interruption will happen immediately.
 
    If given, *signum* is the number of the signal to simulate.
-   If *signum* is not given, :data:`signal.SIGINT` is simulated.
+   If *signum* is not given, :const:`signal.SIGINT` is simulated.
 
    If the given signal isn't handled by Python (it was set to
-   :data:`signal.SIG_DFL` or :data:`signal.SIG_IGN`), this function does
+   :const:`signal.SIG_DFL` or :const:`signal.SIG_IGN`), this function does
    nothing.
 
    .. versionchanged:: 3.10
@@ -120,10 +120,13 @@ This module defines the following constants and functions:
    Its value may be used to uniquely identify this particular thread system-wide
    (until the thread terminates, after which the value may be recycled by the OS).
 
-   .. availability:: Windows, FreeBSD, Linux, macOS, OpenBSD, NetBSD, AIX, DragonFlyBSD.
+   .. availability:: Windows, FreeBSD, Linux, macOS, OpenBSD, NetBSD, AIX, DragonFlyBSD, GNU/kFreeBSD.
 
    .. versionadded:: 3.8
 
+   .. versionchanged:: 3.13
+      Added support for GNU/kFreeBSD.
+
 
 .. function:: stack_size([size])
 
@@ -150,8 +153,8 @@ This module defines the following constants and functions:
 .. data:: TIMEOUT_MAX
 
    The maximum value allowed for the *timeout* parameter of
-   :meth:`Lock.acquire`. Specifying a timeout greater than this value will
-   raise an :exc:`OverflowError`.
+   :meth:`Lock.acquire <threading.Lock.acquire>`. Specifying a timeout greater
+   than this value will raise an :exc:`OverflowError`.
 
    .. versionadded:: 3.2
 
@@ -208,7 +211,7 @@ In addition to these methods, lock objects can also be used via the
 
 **Caveats:**
 
-  .. index:: pair: module; signal
+.. index:: pair: module; signal
 
 * Threads interact strangely with interrupts: the :exc:`KeyboardInterrupt`
   exception will be received by an arbitrary thread.  (When the :mod:`signal`
@@ -217,8 +220,9 @@ In addition to these methods, lock objects can also be used via the
 * Calling :func:`sys.exit` or raising the :exc:`SystemExit` exception is
   equivalent to calling :func:`_thread.exit`.
 
-* It is not possible to interrupt the :meth:`acquire` method on a lock --- the
-  :exc:`KeyboardInterrupt` exception will happen after the lock has been acquired.
+* It is not possible to interrupt the :meth:`~threading.Lock.acquire` method on
+  a lock --- the :exc:`KeyboardInterrupt` exception will happen after the lock
+  has been acquired.
 
 * When the main thread exits, it is system defined whether the other threads
   survive.  On most systems, they are killed without executing
diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 274b2d69f0ab5c..c073ea955abaa4 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -21,7 +21,7 @@ The :mod:`collections` module has some concrete classes that derive from
 ABCs; these can, of course, be further derived. In addition, the
 :mod:`collections.abc` submodule has some ABCs that can be used to test whether
 a class or instance provides a particular interface, for example, if it is
-:term:`hashable` or if it is a mapping.
+:term:`hashable` or if it is a :term:`mapping`.
 
 
 This module provides the metaclass :class:`ABCMeta` for defining ABCs and
@@ -30,7 +30,7 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
 .. class:: ABC
 
    A helper class that has :class:`ABCMeta` as its metaclass.  With this class,
-   an abstract base class can be created by simply deriving from :class:`ABC`
+   an abstract base class can be created by simply deriving from :class:`!ABC`
    avoiding sometimes confusing metaclass usage, for example::
 
      from abc import ABC
@@ -38,11 +38,11 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
      class MyABC(ABC):
          pass
 
-   Note that the type of :class:`ABC` is still :class:`ABCMeta`, therefore
-   inheriting from :class:`ABC` requires the usual precautions regarding
+   Note that the type of :class:`!ABC` is still :class:`ABCMeta`, therefore
+   inheriting from :class:`!ABC` requires the usual precautions regarding
    metaclass usage, as multiple inheritance may lead to metaclass conflicts.
    One may also define an abstract base class by passing the metaclass
-   keyword and using :class:`ABCMeta` directly, for example::
+   keyword and using :class:`!ABCMeta` directly, for example::
 
      from abc import ABCMeta
 
@@ -65,7 +65,7 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
    implementations defined by the registering ABC be callable (not even via
    :func:`super`). [#]_
 
-   Classes created with a metaclass of :class:`ABCMeta` have the following method:
+   Classes created with a metaclass of :class:`!ABCMeta` have the following method:
 
    .. method:: register(subclass)
 
@@ -86,7 +86,7 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
          Returns the registered subclass, to allow usage as a class decorator.
 
       .. versionchanged:: 3.4
-         To detect calls to :meth:`register`, you can use the
+         To detect calls to :meth:`!register`, you can use the
          :func:`get_cache_token` function.
 
    You can also override this method in an abstract base class:
@@ -96,10 +96,10 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
       (Must be defined as a class method.)
 
       Check whether *subclass* is considered a subclass of this ABC.  This means
-      that you can customize the behavior of ``issubclass`` further without the
+      that you can customize the behavior of :func:`issubclass` further without the
       need to call :meth:`register` on every class you want to consider a
       subclass of the ABC.  (This class method is called from the
-      :meth:`__subclasscheck__` method of the ABC.)
+      :meth:`~class.__subclasscheck__` method of the ABC.)
 
       This method should return ``True``, ``False`` or ``NotImplemented``.  If
       it returns ``True``, the *subclass* is considered a subclass of this ABC.
@@ -142,7 +142,7 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
 
    The ABC ``MyIterable`` defines the standard iterable method,
    :meth:`~iterator.__iter__`, as an abstract method.  The implementation given
-   here can still be called from subclasses.  The :meth:`get_iterator` method
+   here can still be called from subclasses.  The :meth:`!get_iterator` method
    is also part of the ``MyIterable`` abstract base class, but it does not have
    to be overridden in non-abstract derived classes.
 
@@ -153,14 +153,14 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
 
    Finally, the last line makes ``Foo`` a virtual subclass of ``MyIterable``,
    even though it does not define an :meth:`~iterator.__iter__` method (it uses
-   the old-style iterable protocol, defined in terms of :meth:`__len__` and
-   :meth:`__getitem__`).  Note that this will not make ``get_iterator``
+   the old-style iterable protocol, defined in terms of :meth:`~object.__len__` and
+   :meth:`~object.__getitem__`).  Note that this will not make ``get_iterator``
    available as a method of ``Foo``, so it is provided separately.
 
 
 
 
-The :mod:`abc` module also provides the following decorator:
+The :mod:`!abc` module also provides the following decorator:
 
 .. decorator:: abstractmethod
 
@@ -168,19 +168,19 @@ The :mod:`abc` module also provides the following decorator:
 
    Using this decorator requires that the class's metaclass is :class:`ABCMeta`
    or is derived from it.  A class that has a metaclass derived from
-   :class:`ABCMeta` cannot be instantiated unless all of its abstract methods
+   :class:`!ABCMeta` cannot be instantiated unless all of its abstract methods
    and properties are overridden.  The abstract methods can be called using any
-   of the normal 'super' call mechanisms.  :func:`abstractmethod` may be used
+   of the normal 'super' call mechanisms.  :func:`!abstractmethod` may be used
    to declare abstract methods for properties and descriptors.
 
    Dynamically adding abstract methods to a class, or attempting to modify the
    abstraction status of a method or class once it is created, are only
    supported using the :func:`update_abstractmethods` function.  The
-   :func:`abstractmethod` only affects subclasses derived using regular
-   inheritance; "virtual subclasses" registered with the ABC's :meth:`register`
-   method are not affected.
+   :func:`!abstractmethod` only affects subclasses derived using regular
+   inheritance; "virtual subclasses" registered with the ABC's
+   :meth:`~ABCMeta.register` method are not affected.
 
-   When :func:`abstractmethod` is applied in combination with other method
+   When :func:`!abstractmethod` is applied in combination with other method
    descriptors, it should be applied as the innermost decorator, as shown in
    the following usage examples::
 
@@ -216,7 +216,7 @@ The :mod:`abc` module also provides the following decorator:
 
    In order to correctly interoperate with the abstract base class machinery,
    the descriptor must identify itself as abstract using
-   :attr:`__isabstractmethod__`. In general, this attribute should be ``True``
+   :attr:`!__isabstractmethod__`. In general, this attribute should be ``True``
    if any of the methods used to compose the descriptor are abstract. For
    example, Python's built-in :class:`property` does the equivalent of::
 
@@ -236,7 +236,7 @@ The :mod:`abc` module also provides the following decorator:
       super-call in a framework that uses cooperative
       multiple-inheritance.
 
-The :mod:`abc` module also supports the following legacy decorators:
+The :mod:`!abc` module also supports the following legacy decorators:
 
 .. decorator:: abstractclassmethod
 
@@ -323,7 +323,7 @@ The :mod:`abc` module also supports the following legacy decorators:
               ...
 
 
-The :mod:`abc` module also provides the following functions:
+The :mod:`!abc` module also provides the following functions:
 
 .. function:: get_cache_token()
 
diff --git a/Doc/library/aifc.rst b/Doc/library/aifc.rst
deleted file mode 100644
index 9f20a30193fa70..00000000000000
--- a/Doc/library/aifc.rst
+++ /dev/null
@@ -1,247 +0,0 @@
-:mod:`aifc` --- Read and write AIFF and AIFC files
-==================================================
-
-.. module:: aifc
-   :synopsis: Read and write audio files in AIFF or AIFC format.
-   :deprecated:
-
-**Source code:** :source:`Lib/aifc.py`
-
-.. index::
-   single: Audio Interchange File Format
-   single: AIFF
-   single: AIFF-C
-
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`aifc` module is deprecated
-   (see :pep:`PEP 594 <594#aifc>` for details).
-
---------------
-
-This module provides support for reading and writing AIFF and AIFF-C files.
-AIFF is Audio Interchange File Format, a format for storing digital audio
-samples in a file.  AIFF-C is a newer version of the format that includes the
-ability to compress the audio data.
-
-Audio files have a number of parameters that describe the audio data. The
-sampling rate or frame rate is the number of times per second the sound is
-sampled.  The number of channels indicate if the audio is mono, stereo, or
-quadro.  Each frame consists of one sample per channel.  The sample size is the
-size in bytes of each sample.  Thus a frame consists of
-``nchannels * samplesize`` bytes, and a second's worth of audio consists of
-``nchannels * samplesize * framerate`` bytes.
-
-For example, CD quality audio has a sample size of two bytes (16 bits), uses two
-channels (stereo) and has a frame rate of 44,100 frames/second.  This gives a
-frame size of 4 bytes (2\*2), and a second's worth occupies 2\*2\*44100 bytes
-(176,400 bytes).
-
-Module :mod:`aifc` defines the following function:
-
-
-.. function:: open(file, mode=None)
-
-   Open an AIFF or AIFF-C file and return an object instance with methods that are
-   described below.  The argument *file* is either a string naming a file or a
-   :term:`file object`.  *mode* must be ``'r'`` or ``'rb'`` when the file must be
-   opened for reading, or ``'w'``  or ``'wb'`` when the file must be opened for writing.
-   If omitted, ``file.mode`` is used if it exists, otherwise ``'rb'`` is used.  When
-   used for writing, the file object should be seekable, unless you know ahead of
-   time how many samples you are going to write in total and use
-   :meth:`writeframesraw` and :meth:`setnframes`.
-   The :func:`.open` function may be used in a :keyword:`with` statement.  When
-   the :keyword:`!with` block completes, the :meth:`~aifc.close` method is called.
-
-   .. versionchanged:: 3.4
-      Support for the :keyword:`with` statement was added.
-
-Objects returned by :func:`.open` when a file is opened for reading have the
-following methods:
-
-
-.. method:: aifc.getnchannels()
-
-   Return the number of audio channels (1 for mono, 2 for stereo).
-
-
-.. method:: aifc.getsampwidth()
-
-   Return the size in bytes of individual samples.
-
-
-.. method:: aifc.getframerate()
-
-   Return the sampling rate (number of audio frames per second).
-
-
-.. method:: aifc.getnframes()
-
-   Return the number of audio frames in the file.
-
-
-.. method:: aifc.getcomptype()
-
-   Return a bytes array of length 4 describing the type of compression
-   used in the audio file.  For AIFF files, the returned value is
-   ``b'NONE'``.
-
-
-.. method:: aifc.getcompname()
-
-   Return a bytes array convertible to a human-readable description
-   of the type of compression used in the audio file.  For AIFF files,
-   the returned value is ``b'not compressed'``.
-
-
-.. method:: aifc.getparams()
-
-   Returns a :func:`~collections.namedtuple` ``(nchannels, sampwidth,
-   framerate, nframes, comptype, compname)``, equivalent to output of the
-   :meth:`get\*` methods.
-
-
-.. method:: aifc.getmarkers()
-
-   Return a list of markers in the audio file.  A marker consists of a tuple of
-   three elements.  The first is the mark ID (an integer), the second is the mark
-   position in frames from the beginning of the data (an integer), the third is the
-   name of the mark (a string).
-
-
-.. method:: aifc.getmark(id)
-
-   Return the tuple as described in :meth:`getmarkers` for the mark with the given
-   *id*.
-
-
-.. method:: aifc.readframes(nframes)
-
-   Read and return the next *nframes* frames from the audio file.  The returned
-   data is a string containing for each frame the uncompressed samples of all
-   channels.
-
-
-.. method:: aifc.rewind()
-
-   Rewind the read pointer.  The next :meth:`readframes` will start from the
-   beginning.
-
-
-.. method:: aifc.setpos(pos)
-
-   Seek to the specified frame number.
-
-
-.. method:: aifc.tell()
-
-   Return the current frame number.
-
-
-.. method:: aifc.close()
-
-   Close the AIFF file.  After calling this method, the object can no longer be
-   used.
-
-Objects returned by :func:`.open` when a file is opened for writing have all the
-above methods, except for :meth:`readframes` and :meth:`setpos`.  In addition
-the following methods exist.  The :meth:`get\*` methods can only be called after
-the corresponding :meth:`set\*` methods have been called.  Before the first
-:meth:`writeframes` or :meth:`writeframesraw`, all parameters except for the
-number of frames must be filled in.
-
-
-.. method:: aifc.aiff()
-
-   Create an AIFF file.  The default is that an AIFF-C file is created, unless the
-   name of the file ends in ``'.aiff'`` in which case the default is an AIFF file.
-
-
-.. method:: aifc.aifc()
-
-   Create an AIFF-C file.  The default is that an AIFF-C file is created, unless
-   the name of the file ends in ``'.aiff'`` in which case the default is an AIFF
-   file.
-
-
-.. method:: aifc.setnchannels(nchannels)
-
-   Specify the number of channels in the audio file.
-
-
-.. method:: aifc.setsampwidth(width)
-
-   Specify the size in bytes of audio samples.
-
-
-.. method:: aifc.setframerate(rate)
-
-   Specify the sampling frequency in frames per second.
-
-
-.. method:: aifc.setnframes(nframes)
-
-   Specify the number of frames that are to be written to the audio file. If this
-   parameter is not set, or not set correctly, the file needs to support seeking.
-
-
-.. method:: aifc.setcomptype(type, name)
-
-   .. index::
-      single: u-LAW
-      single: A-LAW
-      single: G.722
-
-   Specify the compression type.  If not specified, the audio data will
-   not be compressed.  In AIFF files, compression is not possible.
-   The name parameter should be a human-readable description of the
-   compression type as a bytes array, the type parameter should be a
-   bytes array of length 4.  Currently the following compression types
-   are supported: ``b'NONE'``, ``b'ULAW'``, ``b'ALAW'``, ``b'G722'``.
-
-
-.. method:: aifc.setparams(nchannels, sampwidth, framerate, comptype, compname)
-
-   Set all the above parameters at once.  The argument is a tuple consisting of the
-   various parameters.  This means that it is possible to use the result of a
-   :meth:`getparams` call as argument to :meth:`setparams`.
-
-
-.. method:: aifc.setmark(id, pos, name)
-
-   Add a mark with the given id (larger than 0), and the given name at the given
-   position.  This method can be called at any time before :meth:`close`.
-
-
-.. method:: aifc.tell()
-   :noindex:
-
-   Return the current write position in the output file.  Useful in combination
-   with :meth:`setmark`.
-
-
-.. method:: aifc.writeframes(data)
-
-   Write data to the output file.  This method can only be called after the audio
-   file parameters have been set.
-
-   .. versionchanged:: 3.4
-      Any :term:`bytes-like object` is now accepted.
-
-
-.. method:: aifc.writeframesraw(data)
-
-   Like :meth:`writeframes`, except that the header of the audio file is not
-   updated.
-
-   .. versionchanged:: 3.4
-      Any :term:`bytes-like object` is now accepted.
-
-
-.. method:: aifc.close()
-   :noindex:
-
-   Close the AIFF file.  The header of the file is updated to reflect the actual
-   size of the audio data. After calling this method, the object can no longer be
-   used.
-
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 33e367f3ccda89..fbffa71d200735 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -57,20 +57,20 @@ the extracted data in a :class:`argparse.Namespace` object::
 Quick Links for add_argument()
 ------------------------------
 
-====================== =========================================================== ==========================================================================================================================
-Name                   Description                                                 Values
-====================== =========================================================== ==========================================================================================================================
-action_                Specify how an argument should be handled                   ``'store'``, ``'store_const'``, ``'store_true'``, ``'append'``, ``'append_const'``, ``'count'``, ``'help'``, ``'version'``
-choices_               Limit values to a specific set of choices                   ``['foo', 'bar']``, ``range(1, 10)``, or :class:`~collections.abc.Container` instance
-const_                 Store a constant value
-default_               Default value used when an argument is not provided         Defaults to ``None``
-dest_                  Specify the attribute name used in the result namespace
-help_                  Help message for an argument
-metavar_               Alternate display name for the argument as shown in help
-nargs_                 Number of times the argument can be used                    :class:`int`, ``'?'``, ``'*'``, or ``'+'``
-required_              Indicate whether an argument is required or optional        ``True`` or ``False``
-type_                  Automatically convert an argument to the given type         :class:`int`, :class:`float`, ``argparse.FileType('w')``, or callable function
-====================== =========================================================== ==========================================================================================================================
+============================ =========================================================== ==========================================================================================================================
+Name                         Description                                                 Values
+============================ =========================================================== ==========================================================================================================================
+action_                      Specify how an argument should be handled                   ``'store'``, ``'store_const'``, ``'store_true'``, ``'append'``, ``'append_const'``, ``'count'``, ``'help'``, ``'version'``
+choices_                     Limit values to a specific set of choices                   ``['foo', 'bar']``, ``range(1, 10)``, or :class:`~collections.abc.Container` instance
+const_                       Store a constant value
+default_                     Default value used when an argument is not provided         Defaults to ``None``
+dest_                        Specify the attribute name used in the result namespace
+help_                        Help message for an argument
+metavar_                     Alternate display name for the argument as shown in help
+nargs_                       Number of times the argument can be used                    :class:`int`, ``'?'``, ``'*'``, or ``'+'``
+required_                    Indicate whether an argument is required or optional        ``True`` or ``False``
+:ref:`type <argparse-type>`  Automatically convert an argument to the given type         :class:`int`, :class:`float`, ``argparse.FileType('w')``, or callable function
+============================ =========================================================== ==========================================================================================================================
 
 
 Example
@@ -1132,7 +1132,7 @@ command-line argument was not present::
    Namespace(foo='1')
 
 
-.. _type:
+.. _argparse-type:
 
 type
 ^^^^
diff --git a/Doc/library/array.rst b/Doc/library/array.rst
index 75c49e0f6d1ebe..ad622627724217 100644
--- a/Doc/library/array.rst
+++ b/Doc/library/array.rst
@@ -24,6 +24,8 @@ defined:
 +-----------+--------------------+-------------------+-----------------------+-------+
 | ``'u'``   | wchar_t            | Unicode character | 2                     | \(1)  |
 +-----------+--------------------+-------------------+-----------------------+-------+
+| ``'w'``   | Py_UCS4            | Unicode character | 4                     |       |
++-----------+--------------------+-------------------+-----------------------+-------+
 | ``'h'``   | signed short       | int               | 2                     |       |
 +-----------+--------------------+-------------------+-----------------------+-------+
 | ``'H'``   | unsigned short     | int               | 2                     |       |
@@ -51,11 +53,12 @@ Notes:
    It can be 16 bits or 32 bits depending on the platform.
 
    .. versionchanged:: 3.9
-      ``array('u')`` now uses ``wchar_t`` as C type instead of deprecated
+      ``array('u')`` now uses :c:type:`wchar_t` as C type instead of deprecated
       ``Py_UNICODE``. This change doesn't affect its behavior because
-      ``Py_UNICODE`` is alias of ``wchar_t`` since Python 3.3.
+      ``Py_UNICODE`` is alias of :c:type:`wchar_t` since Python 3.3.
 
-   .. deprecated-removed:: 3.3 4.0
+   .. deprecated-removed:: 3.3 3.16
+      Please migrate to ``'w'`` typecode.
 
 
 The actual representation of values is determined by the machine architecture
@@ -174,9 +177,9 @@ The module defines the following type:
 
    .. method:: fromunicode(s)
 
-      Extends this array with data from the given unicode string.  The array must
-      be a type ``'u'`` array; otherwise a :exc:`ValueError` is raised.  Use
-      ``array.frombytes(unicodestring.encode(enc))`` to append Unicode data to an
+      Extends this array with data from the given unicode string.
+      The array must have type code ``'u'`` or ``'w'``; otherwise a :exc:`ValueError` is raised.
+      Use ``array.frombytes(unicodestring.encode(enc))`` to append Unicode data to an
       array of some other type.
 
 
@@ -236,21 +239,22 @@ The module defines the following type:
 
    .. method:: tounicode()
 
-      Convert the array to a unicode string.  The array must be a type ``'u'`` array;
+      Convert the array to a unicode string.  The array must have a type ``'u'`` or ``'w'``;
       otherwise a :exc:`ValueError` is raised. Use ``array.tobytes().decode(enc)`` to
       obtain a unicode string from an array of some other type.
 
 
 When an array object is printed or converted to a string, it is represented as
 ``array(typecode, initializer)``.  The *initializer* is omitted if the array is
-empty, otherwise it is a string if the *typecode* is ``'u'``, otherwise it is a
-list of numbers.  The string is guaranteed to be able to be converted back to an
+empty, otherwise it is a string if the *typecode* is ``'u'`` or ``'w'``,
+otherwise it is a list of numbers.
+The string is guaranteed to be able to be converted back to an
 array with the same type and value using :func:`eval`, so long as the
 :class:`~array.array` class has been imported using ``from array import array``.
 Examples::
 
    array('l')
-   array('u', 'hello \u2641')
+   array('w', 'hello \u2641')
    array('l', [1, 2, 3, 4, 5])
    array('d', [1.0, 2.0, 3.14])
 
@@ -260,10 +264,6 @@ Examples::
    Module :mod:`struct`
       Packing and unpacking of heterogeneous binary data.
 
-   Module :mod:`xdrlib`
-      Packing and unpacking of External Data Representation (XDR) data as used in some
-      remote procedure call systems.
-
    `NumPy <https://numpy.org/>`_
       The NumPy package defines another array type.
 
diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index 0811b3fa0e7842..4ebbe0e5471c88 100644
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -146,6 +146,102 @@ Node classes
     Snakes <https://greentreesnakes.readthedocs.io/en/latest/>`__ project and
     all its contributors.
 
+
+.. _ast-root-nodes:
+
+Root nodes
+^^^^^^^^^^
+
+.. class:: Module(body, type_ignores)
+
+   A Python module, as with :ref:`file input <file-input>`.
+   Node type generated by :func:`ast.parse` in the default ``"exec"`` *mode*.
+
+   *body* is a :class:`list` of the module's :ref:`ast-statements`.
+
+   *type_ignores* is a :class:`list` of the module's type ignore comments;
+   see :func:`ast.parse` for more details.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse('x = 1'), indent=4))
+        Module(
+            body=[
+                Assign(
+                    targets=[
+                        Name(id='x', ctx=Store())],
+                    value=Constant(value=1))],
+            type_ignores=[])
+
+
+.. class:: Expression(body)
+
+   A single Python :ref:`expression input <expression-input>`.
+   Node type generated by :func:`ast.parse` when *mode* is ``"eval"``.
+
+   *body* is a single node,
+   one of the :ref:`expression types <ast-expressions>`.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse('123', mode='eval'), indent=4))
+        Expression(
+            body=Constant(value=123))
+
+
+.. class:: Interactive(body)
+
+   A single :ref:`interactive input <interactive>`, like in :ref:`tut-interac`.
+   Node type generated by :func:`ast.parse` when *mode* is ``"single"``.
+
+   *body* is a :class:`list` of :ref:`statement nodes <ast-statements>`.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse('x = 1; y = 2', mode='single'), indent=4))
+        Interactive(
+            body=[
+                Assign(
+                    targets=[
+                        Name(id='x', ctx=Store())],
+                    value=Constant(value=1)),
+                Assign(
+                    targets=[
+                        Name(id='y', ctx=Store())],
+                    value=Constant(value=2))])
+
+
+.. class:: FunctionType(argtypes, returns)
+
+   A representation of an old-style type comments for functions,
+   as Python versions prior to 3.5 didn't support :pep:`484` annotations.
+   Node type generated by :func:`ast.parse` when *mode* is ``"func_type"``.
+
+   Such type comments would look like this::
+
+       def sum_two_number(a, b):
+           # type: (int, int) -> int
+           return a + b
+
+   *argtypes* is a :class:`list` of :ref:`expression nodes <ast-expressions>`.
+
+   *returns* is a single :ref:`expression node <ast-expressions>`.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse('(int, str) -> List[int]', mode='func_type'), indent=4))
+        FunctionType(
+            argtypes=[
+                Name(id='int', ctx=Load()),
+                Name(id='str', ctx=Load())],
+            returns=Subscript(
+                value=Name(id='List', ctx=Load()),
+                slice=Name(id='int', ctx=Load()),
+                ctx=Load()))
+
+   .. versionadded:: 3.8
+
+
 Literals
 ^^^^^^^^
 
@@ -344,6 +440,8 @@ Variables
             type_ignores=[])
 
 
+.. _ast-expressions:
+
 Expressions
 ^^^^^^^^^^^
 
@@ -481,17 +579,17 @@ Expressions
    Comparison operator tokens.
 
 
-.. class:: Call(func, args, keywords, starargs, kwargs)
+.. class:: Call(func, args, keywords)
 
    A function call. ``func`` is the function, which will often be a
    :class:`Name` or :class:`Attribute` object. Of the arguments:
 
    * ``args`` holds a list of the arguments passed by position.
-   * ``keywords`` holds a list of :class:`keyword` objects representing
+   * ``keywords`` holds a list of :class:`.keyword` objects representing
      arguments passed by keyword.
 
    When creating a ``Call`` node, ``args`` and ``keywords`` are required, but
-   they can be empty lists. ``starargs`` and ``kwargs`` are optional.
+   they can be empty lists.
 
    .. doctest::
 
@@ -552,10 +650,10 @@ Expressions
 
 .. class:: NamedExpr(target, value)
 
-    A named expression. This AST node is produced by the assignment expressions
-    operator (also known as the walrus operator). As opposed to the :class:`Assign`
-    node in which the first argument can be multiple nodes, in this case both
-    ``target`` and ``value`` must be single nodes.
+   A named expression. This AST node is produced by the assignment expressions
+   operator (also known as the walrus operator). As opposed to the :class:`Assign`
+   node in which the first argument can be multiple nodes, in this case both
+   ``target`` and ``value`` must be single nodes.
 
    .. doctest::
 
@@ -565,6 +663,7 @@ Expressions
                 target=Name(id='x', ctx=Store()),
                 value=Constant(value=4)))
 
+   .. versionadded:: 3.8
 
 Subscripting
 ~~~~~~~~~~~~
@@ -735,6 +834,9 @@ Comprehensions
                         ifs=[],
                         is_async=1)]))
 
+
+.. _ast-statements:
+
 Statements
 ^^^^^^^^^^
 
@@ -917,6 +1019,26 @@ Statements
             type_ignores=[])
 
 
+.. class:: TypeAlias(name, type_params, value)
+
+   A :ref:`type alias <type-aliases>` created through the :keyword:`type`
+   statement. ``name`` is the name of the alias, ``type_params`` is a list of
+   :ref:`type parameters <ast-type-params>`, and ``value`` is the value of the
+   type alias.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse('type Alias = int'), indent=4))
+        Module(
+            body=[
+                TypeAlias(
+                    name=Name(id='Alias', ctx=Store()),
+                    type_params=[],
+                    value=Name(id='int', ctx=Load()))],
+            type_ignores=[])
+
+   .. versionadded:: 3.12
+
 Other statements which are only applicable inside functions or loops are
 described in other sections.
 
@@ -1198,6 +1320,7 @@ Control flow
                     finalbody=[])],
             type_ignores=[])
 
+   .. versionadded:: 3.11
 
 .. class:: ExceptHandler(type, name, body)
 
@@ -1287,6 +1410,8 @@ Pattern matching
    that is being matched against the cases) and ``cases`` contains an iterable of
    :class:`match_case` nodes with the different cases.
 
+   .. versionadded:: 3.10
+
 .. class:: match_case(pattern, guard, body)
 
    A single case pattern in a ``match`` statement. ``pattern`` contains the
@@ -1338,6 +1463,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchValue(value)
 
    A match literal or value pattern that compares by equality. ``value`` is
@@ -1365,6 +1492,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchSingleton(value)
 
    A match literal pattern that compares by identity. ``value`` is the
@@ -1390,6 +1519,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchSequence(patterns)
 
    A match sequence pattern. ``patterns`` contains the patterns to be matched
@@ -1421,6 +1552,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchStar(name)
 
    Matches the rest of the sequence in a variable length match sequence pattern.
@@ -1461,6 +1594,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchMapping(keys, patterns, rest)
 
    A match mapping pattern. ``keys`` is a sequence of expression nodes.
@@ -1507,6 +1642,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchClass(cls, patterns, kwd_attrs, kwd_patterns)
 
    A match class pattern. ``cls`` is an expression giving the nominal class to
@@ -1571,6 +1708,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchAs(pattern, name)
 
    A match "as-pattern", capture pattern or wildcard pattern. ``pattern``
@@ -1612,6 +1751,8 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
 .. class:: MatchOr(patterns)
 
    A match "or-pattern". An or-pattern matches each of its subpatterns in turn
@@ -1644,11 +1785,96 @@ Pattern matching
                                     value=Constant(value=Ellipsis))])])],
             type_ignores=[])
 
+   .. versionadded:: 3.10
+
+.. _ast-type-params:
+
+Type parameters
+^^^^^^^^^^^^^^^
+
+:ref:`Type parameters <type-params>` can exist on classes, functions, and type
+aliases.
+
+.. class:: TypeVar(name, bound)
+
+   A :class:`typing.TypeVar`. ``name`` is the name of the type variable.
+   ``bound`` is the bound or constraints, if any. If ``bound`` is a :class:`Tuple`,
+   it represents constraints; otherwise it represents the bound.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse("type Alias[T: int] = list[T]"), indent=4))
+        Module(
+            body=[
+                TypeAlias(
+                    name=Name(id='Alias', ctx=Store()),
+                    type_params=[
+                        TypeVar(
+                            name='T',
+                            bound=Name(id='int', ctx=Load()))],
+                    value=Subscript(
+                        value=Name(id='list', ctx=Load()),
+                        slice=Name(id='T', ctx=Load()),
+                        ctx=Load()))],
+            type_ignores=[])
+
+   .. versionadded:: 3.12
+
+.. class:: ParamSpec(name)
+
+   A :class:`typing.ParamSpec`. ``name`` is the name of the parameter specification.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse("type Alias[**P] = Callable[P, int]"), indent=4))
+        Module(
+            body=[
+                TypeAlias(
+                    name=Name(id='Alias', ctx=Store()),
+                    type_params=[
+                        ParamSpec(name='P')],
+                    value=Subscript(
+                        value=Name(id='Callable', ctx=Load()),
+                        slice=Tuple(
+                            elts=[
+                                Name(id='P', ctx=Load()),
+                                Name(id='int', ctx=Load())],
+                            ctx=Load()),
+                        ctx=Load()))],
+            type_ignores=[])
+
+   .. versionadded:: 3.12
+
+.. class:: TypeVarTuple(name)
+
+   A :class:`typing.TypeVarTuple`. ``name`` is the name of the type variable tuple.
+
+   .. doctest::
+
+        >>> print(ast.dump(ast.parse("type Alias[*Ts] = tuple[*Ts]"), indent=4))
+        Module(
+            body=[
+                TypeAlias(
+                    name=Name(id='Alias', ctx=Store()),
+                    type_params=[
+                        TypeVarTuple(name='Ts')],
+                    value=Subscript(
+                        value=Name(id='tuple', ctx=Load()),
+                        slice=Tuple(
+                            elts=[
+                                Starred(
+                                    value=Name(id='Ts', ctx=Load()),
+                                    ctx=Load())],
+                            ctx=Load()),
+                        ctx=Load()))],
+            type_ignores=[])
+
+   .. versionadded:: 3.12
 
 Function and class definitions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-.. class:: FunctionDef(name, args, body, decorator_list, returns, type_comment)
+.. class:: FunctionDef(name, args, body, decorator_list, returns, type_comment, type_params)
 
    A function definition.
 
@@ -1658,11 +1884,15 @@ Function and class definitions
    * ``decorator_list`` is the list of decorators to be applied, stored outermost
      first (i.e. the first in the list will be applied last).
    * ``returns`` is the return annotation.
+   * ``type_params`` is a list of :ref:`type parameters <ast-type-params>`.
 
    .. attribute:: type_comment
 
        ``type_comment`` is an optional string with the type annotation as a comment.
 
+   .. versionchanged:: 3.12
+        Added ``type_params``.
+
 
 .. class:: Lambda(args, body)
 
@@ -1748,7 +1978,8 @@ Function and class definitions
                     decorator_list=[
                         Name(id='decorator1', ctx=Load()),
                         Name(id='decorator2', ctx=Load())],
-                    returns=Constant(value='return annotation'))],
+                    returns=Constant(value='return annotation'),
+                    type_params=[])],
             type_ignores=[])
 
 
@@ -1819,21 +2050,19 @@ Function and class definitions
             type_ignores=[])
 
 
-.. class:: ClassDef(name, bases, keywords, starargs, kwargs, body, decorator_list)
+.. class:: ClassDef(name, bases, keywords, body, decorator_list, type_params)
 
    A class definition.
 
    * ``name`` is a raw string for the class name
    * ``bases`` is a list of nodes for explicitly specified base classes.
-   * ``keywords`` is a list of :class:`keyword` nodes, principally for 'metaclass'.
+   * ``keywords`` is a list of :class:`.keyword` nodes, principally for 'metaclass'.
      Other keywords will be passed to the metaclass, as per `PEP-3115
      <https://peps.python.org/pep-3115/>`_.
-   * ``starargs`` and ``kwargs`` are each a single node, as in a function call.
-     starargs will be expanded to join the list of base classes, and kwargs will
-     be passed to the metaclass.
    * ``body`` is a list of nodes representing the code within the class
      definition.
    * ``decorator_list`` is a list of nodes, as in :class:`FunctionDef`.
+   * ``type_params`` is a list of :ref:`type parameters <ast-type-params>`.
 
    .. doctest::
 
@@ -1858,17 +2087,24 @@ Function and class definitions
                         Pass()],
                     decorator_list=[
                         Name(id='decorator1', ctx=Load()),
-                        Name(id='decorator2', ctx=Load())])],
+                        Name(id='decorator2', ctx=Load())],
+                    type_params=[])],
             type_ignores=[])
 
+   .. versionchanged:: 3.12
+        Added ``type_params``.
+
 Async and await
 ^^^^^^^^^^^^^^^
 
-.. class:: AsyncFunctionDef(name, args, body, decorator_list, returns, type_comment)
+.. class:: AsyncFunctionDef(name, args, body, decorator_list, returns, type_comment, type_params)
 
    An ``async def`` function definition. Has the same fields as
    :class:`FunctionDef`.
 
+   .. versionchanged:: 3.12
+        Added ``type_params``.
+
 
 .. class:: Await(value)
 
@@ -1898,7 +2134,8 @@ Async and await
                                 func=Name(id='other_func', ctx=Load()),
                                 args=[],
                                 keywords=[])))],
-                decorator_list=[])],
+                decorator_list=[],
+                type_params=[])],
         type_ignores=[])
 
 
@@ -1923,10 +2160,12 @@ Async and await
 Apart from the node classes, the :mod:`ast` module defines these utility functions
 and classes for traversing abstract syntax trees:
 
-.. function:: parse(source, filename='<unknown>', mode='exec', *, type_comments=False, feature_version=None)
+.. function:: parse(source, filename='<unknown>', mode='exec', *, type_comments=False, feature_version=None, optimize=-1)
 
    Parse the source into an AST node.  Equivalent to ``compile(source,
-   filename, mode, ast.PyCF_ONLY_AST)``.
+   filename, mode, flags=FLAGS_VALUE, optimize=optimize)``,
+   where ``FLAGS_VALUE`` is ``ast.PyCF_ONLY_AST`` if ``optimize <= 0``
+   and ``ast.PyCF_OPTIMIZED_AST`` otherwise.
 
    If ``type_comments=True`` is given, the parser is modified to check
    and return type comments as specified by :pep:`484` and :pep:`526`.
@@ -1947,7 +2186,7 @@ and classes for traversing abstract syntax trees:
    Currently ``major`` must equal to ``3``.  For example, setting
    ``feature_version=(3, 4)`` will allow the use of ``async`` and
    ``await`` as variable names.  The lowest supported version is
-   ``(3, 4)``; the highest is ``sys.version_info[0:2]``.
+   ``(3, 7)``; the highest is ``sys.version_info[0:2]``.
 
    If source contains a null character ('\0'), :exc:`ValueError` is raised.
 
@@ -1970,6 +2209,10 @@ and classes for traversing abstract syntax trees:
    .. versionchanged:: 3.8
       Added ``type_comments``, ``mode='func_type'`` and ``feature_version``.
 
+   .. versionchanged:: 3.13
+      The minimum supported version for feature_version is now (3,7)
+      The ``optimize`` argument was added.
+
 
 .. function:: unparse(ast_obj)
 
@@ -2240,26 +2483,26 @@ The following options are accepted:
 
 .. program:: ast
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    Show the help message and exit.
 
-.. cmdoption:: -m <mode>
-               --mode <mode>
+.. option:: -m <mode>
+            --mode <mode>
 
    Specify what kind of code must be compiled, like the *mode* argument
    in :func:`parse`.
 
-.. cmdoption:: --no-type-comments
+.. option:: --no-type-comments
 
    Don't parse type comments.
 
-.. cmdoption:: -a, --include-attributes
+.. option:: -a, --include-attributes
 
    Include attributes such as line numbers and column offsets.
 
-.. cmdoption:: -i <indent>
-               --indent <indent>
+.. option:: -i <indent>
+            --indent <indent>
 
    Indentation of nodes in AST (number of spaces).
 
diff --git a/Doc/library/asyncio-dev.rst b/Doc/library/asyncio-dev.rst
index 921a394a59fec7..a9c3a0183bb72d 100644
--- a/Doc/library/asyncio-dev.rst
+++ b/Doc/library/asyncio-dev.rst
@@ -34,7 +34,7 @@ There are several ways to enable asyncio debug mode:
 In addition to enabling the debug mode, consider also:
 
 * setting the log level of the :ref:`asyncio logger <asyncio-logger>` to
-  :py:data:`logging.DEBUG`, for example the following snippet of code
+  :py:const:`logging.DEBUG`, for example the following snippet of code
   can be run at startup of the application::
 
     logging.basicConfig(level=logging.DEBUG)
@@ -99,7 +99,7 @@ To schedule a coroutine object from a different OS thread, the
      # Wait for the result:
      result = future.result()
 
-To handle signals and to execute subprocesses, the event loop must be
+To handle signals the event loop must be
 run in the main thread.
 
 The :meth:`loop.run_in_executor` method can be used with a
@@ -142,7 +142,7 @@ Logging
 asyncio uses the :mod:`logging` module and all logging is performed
 via the ``"asyncio"`` logger.
 
-The default log level is :py:data:`logging.INFO`, which can be easily
+The default log level is :py:const:`logging.INFO`, which can be easily
 adjusted::
 
    logging.getLogger("asyncio").setLevel(logging.WARNING)
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index 8d0022cc66daac..ea1d146f06cf2b 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -243,9 +243,9 @@ Scheduling callbacks
    See the :ref:`concurrency and multithreading <asyncio-multithreading>`
    section of the documentation.
 
-.. versionchanged:: 3.7
-   The *context* keyword-only parameter was added. See :pep:`567`
-   for more details.
+   .. versionchanged:: 3.7
+      The *context* keyword-only parameter was added. See :pep:`567`
+      for more details.
 
 .. _asyncio-pass-keywords:
 
@@ -403,11 +403,11 @@ Opening network connections
    Open a streaming transport connection to a given
    address specified by *host* and *port*.
 
-   The socket family can be either :py:data:`~socket.AF_INET` or
-   :py:data:`~socket.AF_INET6` depending on *host* (or the *family*
+   The socket family can be either :py:const:`~socket.AF_INET` or
+   :py:const:`~socket.AF_INET6` depending on *host* (or the *family*
    argument, if provided).
 
-   The socket type will be :py:data:`~socket.SOCK_STREAM`.
+   The socket type will be :py:const:`~socket.SOCK_STREAM`.
 
    *protocol_factory* must be a callable returning an
    :ref:`asyncio protocol <asyncio-protocol>` implementation.
@@ -509,7 +509,7 @@ Opening network connections
 
    .. versionchanged:: 3.6
 
-      The socket option :py:data:`~socket.TCP_NODELAY` is set by default
+      The socket option :ref:`socket.TCP_NODELAY <socket-unix-constants>` is set by default
       for all TCP connections.
 
    .. versionchanged:: 3.7
@@ -552,11 +552,11 @@ Opening network connections
 
    Create a datagram connection.
 
-   The socket family can be either :py:data:`~socket.AF_INET`,
-   :py:data:`~socket.AF_INET6`, or :py:data:`~socket.AF_UNIX`,
+   The socket family can be either :py:const:`~socket.AF_INET`,
+   :py:const:`~socket.AF_INET6`, or :py:const:`~socket.AF_UNIX`,
    depending on *host* (or the *family* argument, if provided).
 
-   The socket type will be :py:data:`~socket.SOCK_DGRAM`.
+   The socket type will be :py:const:`~socket.SOCK_DGRAM`.
 
    *protocol_factory* must be a callable returning a
    :ref:`protocol <asyncio-protocol>` implementation.
@@ -581,7 +581,7 @@ Opening network connections
    * *reuse_port* tells the kernel to allow this endpoint to be bound to the
      same port as other existing endpoints are bound to, so long as they all
      set this flag when being created. This option is not supported on Windows
-     and some Unixes. If the :py:data:`~socket.SO_REUSEPORT` constant is not
+     and some Unixes. If the :ref:`socket.SO_REUSEPORT <socket-unix-constants>` constant is not
      defined then this capability is unsupported.
 
    * *allow_broadcast* tells the kernel to allow this endpoint to send
@@ -607,7 +607,8 @@ Opening network connections
 
    .. versionchanged:: 3.8.1
       The *reuse_address* parameter is no longer supported, as using
-      :py:data:`~sockets.SO_REUSEADDR` poses a significant security concern for
+      :ref:`socket.SO_REUSEADDR <socket-unix-constants>`
+      poses a significant security concern for
       UDP. Explicitly passing ``reuse_address=True`` will raise an exception.
 
       When multiple processes with differing UIDs assign sockets to an
@@ -616,7 +617,8 @@ Opening network connections
 
       For supported platforms, *reuse_port* can be used as a replacement for
       similar functionality. With *reuse_port*,
-      :py:data:`~sockets.SO_REUSEPORT` is used instead, which specifically
+      :ref:`socket.SO_REUSEPORT <socket-unix-constants>`
+      is used instead, which specifically
       prevents processes with differing UIDs from assigning sockets to the same
       socket address.
 
@@ -634,8 +636,8 @@ Opening network connections
 
    Create a Unix connection.
 
-   The socket family will be :py:data:`~socket.AF_UNIX`; socket
-   type will be :py:data:`~socket.SOCK_STREAM`.
+   The socket family will be :py:const:`~socket.AF_UNIX`; socket
+   type will be :py:const:`~socket.SOCK_STREAM`.
 
    A tuple of ``(transport, protocol)`` is returned on success.
 
@@ -661,6 +663,8 @@ Opening network connections
 Creating network servers
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
+.. _loop_create_server:
+
 .. coroutinemethod:: loop.create_server(protocol_factory, \
                         host=None, port=None, *, \
                         family=socket.AF_UNSPEC, \
@@ -671,7 +675,7 @@ Creating network servers
                         ssl_shutdown_timeout=None, \
                         start_serving=True)
 
-   Create a TCP server (socket type :data:`~socket.SOCK_STREAM`) listening
+   Create a TCP server (socket type :const:`~socket.SOCK_STREAM`) listening
    on *port* of the *host* address.
 
    Returns a :class:`Server` object.
@@ -699,10 +703,10 @@ Creating network servers
      be selected (note that if *host* resolves to multiple network interfaces,
      a different random port will be selected for each interface).
 
-   * *family* can be set to either :data:`socket.AF_INET` or
-     :data:`~socket.AF_INET6` to force the socket to use IPv4 or IPv6.
+   * *family* can be set to either :const:`socket.AF_INET` or
+     :const:`~socket.AF_INET6` to force the socket to use IPv4 or IPv6.
      If not set, the *family* will be determined from host name
-     (defaults to :data:`~socket.AF_UNSPEC`).
+     (defaults to :const:`~socket.AF_UNSPEC`).
 
    * *flags* is a bitmask for :meth:`getaddrinfo`.
 
@@ -756,7 +760,7 @@ Creating network servers
    .. versionchanged:: 3.6
 
       Added *ssl_handshake_timeout* and *start_serving* parameters.
-      The socket option :py:data:`~socket.TCP_NODELAY` is set by default
+      The socket option :ref:`socket.TCP_NODELAY <socket-unix-constants>` is set by default
       for all TCP connections.
 
    .. versionchanged:: 3.11
@@ -774,16 +778,20 @@ Creating network servers
                           *, sock=None, backlog=100, ssl=None, \
                           ssl_handshake_timeout=None, \
                           ssl_shutdown_timeout=None, \
-                          start_serving=True)
+                          start_serving=True, cleanup_socket=True)
 
    Similar to :meth:`loop.create_server` but works with the
-   :py:data:`~socket.AF_UNIX` socket family.
+   :py:const:`~socket.AF_UNIX` socket family.
 
    *path* is the name of a Unix domain socket, and is required,
    unless a *sock* argument is provided.  Abstract Unix sockets,
    :class:`str`, :class:`bytes`, and :class:`~pathlib.Path` paths
    are supported.
 
+   If *cleanup_socket* is True then the Unix socket will automatically
+   be removed from the filesystem when the server is closed, unless the
+   socket has been replaced after the server has been created.
+
    See the documentation of the :meth:`loop.create_server` method
    for information about arguments to this method.
 
@@ -798,6 +806,10 @@ Creating network servers
 
       Added the *ssl_shutdown_timeout* parameter.
 
+   .. versionchanged:: 3.13
+
+      Added the *cleanup_socket* parameter.
+
 
 .. coroutinemethod:: loop.connect_accepted_socket(protocol_factory, \
                         sock, *, ssl=None, ssl_handshake_timeout=None, \
@@ -895,6 +907,9 @@ TLS Upgrade
    object only because the coder caches *protocol*-side data and sporadically
    exchanges extra TLS session packets with *transport*.
 
+   In some situations (e.g. when the passed transport is already closing) this
+   may return ``None``.
+
    Parameters:
 
    * *transport* and *protocol* instances that methods like
@@ -1188,6 +1203,8 @@ Working with pipes
 Unix signals
 ^^^^^^^^^^^^
 
+.. _loop_add_signal_handler:
+
 .. method:: loop.add_signal_handler(signum, callback, *args)
 
    Set *callback* as the handler for the *signum* signal.
@@ -1388,6 +1405,14 @@ Enabling debug mode
       The new :ref:`Python Development Mode <devmode>` can now also be used
       to enable the debug mode.
 
+.. attribute:: loop.slow_callback_duration
+
+   This attribute can be used to set the
+   minimum execution duration in seconds that is considered "slow".
+   When debug mode is enabled, "slow" callbacks are logged.
+
+   Default value is 100 milliseconds.
+
 .. seealso::
 
    The :ref:`debug mode of asyncio <asyncio-debug-mode>`.
@@ -1408,6 +1433,8 @@ async/await code consider using the high-level
    :ref:`Subprocess Support on Windows <asyncio-windows-subprocess>` for
    details.
 
+.. _loop_subprocess_exec:
+
 .. coroutinemethod:: loop.subprocess_exec(protocol_factory, *args, \
                       stdin=subprocess.PIPE, stdout=subprocess.PIPE, \
                       stderr=subprocess.PIPE, **kwargs)
@@ -1439,6 +1466,7 @@ async/await code consider using the high-level
    * *stdin* can be any of these:
 
      * a file-like object
+     * an existing file descriptor (a positive integer), for example those created with :meth:`os.pipe()`
      * the :const:`subprocess.PIPE` constant (default) which will create a new
        pipe and connect it,
      * the value ``None`` which will make the subprocess inherit the file
@@ -1590,6 +1618,9 @@ Do not instantiate the :class:`Server` class directly.
    .. versionchanged:: 3.7
       Server object is an asynchronous context manager since Python 3.7.
 
+   .. versionchanged:: 3.11
+      This class was exposed publicly as ``asyncio.Server`` in Python 3.9.11, 3.10.3 and 3.11.
+
    .. method:: close()
 
       Stop serving: close listening sockets and set the :attr:`sockets`
@@ -1598,8 +1629,9 @@ Do not instantiate the :class:`Server` class directly.
       The sockets that represent existing incoming client connections
       are left open.
 
-      The server is closed asynchronously, use the :meth:`wait_closed`
-      coroutine to wait until the server is closed.
+      The server is closed asynchronously; use the :meth:`wait_closed`
+      coroutine to wait until the server is closed (and no more
+      connections are active).
 
    .. method:: get_loop()
 
@@ -1657,7 +1689,8 @@ Do not instantiate the :class:`Server` class directly.
 
    .. coroutinemethod:: wait_closed()
 
-      Wait until the :meth:`close` method completes.
+      Wait until the :meth:`close` method completes and all active
+      connections have finished.
 
    .. attribute:: sockets
 
@@ -1679,13 +1712,13 @@ Event Loop Implementations
 asyncio ships with two different event loop implementations:
 :class:`SelectorEventLoop` and :class:`ProactorEventLoop`.
 
-By default asyncio is configured to use :class:`SelectorEventLoop`
-on Unix and :class:`ProactorEventLoop` on Windows.
+By default asyncio is configured to use :class:`EventLoop`.
 
 
 .. class:: SelectorEventLoop
 
-   An event loop based on the :mod:`selectors` module.
+   A subclass of :class:`AbstractEventLoop` based on the
+   :mod:`selectors` module.
 
    Uses the most efficient *selector* available for the given
    platform.  It is also possible to manually configure the
@@ -1707,7 +1740,7 @@ on Unix and :class:`ProactorEventLoop` on Windows.
 
 .. class:: ProactorEventLoop
 
-   An event loop for Windows that uses "I/O Completion Ports" (IOCP).
+   A subclass of :class:`AbstractEventLoop` for Windows that uses "I/O Completion Ports" (IOCP).
 
    .. availability:: Windows.
 
@@ -1716,6 +1749,14 @@ on Unix and :class:`ProactorEventLoop` on Windows.
       `MSDN documentation on I/O Completion Ports
       <https://docs.microsoft.com/en-ca/windows/desktop/FileIO/i-o-completion-ports>`_.
 
+.. class:: EventLoop
+
+    An alias to the most efficient available subclass of :class:`AbstractEventLoop` for the given
+    platform.
+
+    It is an alias to :class:`SelectorEventLoop` on Unix and :class:`ProactorEventLoop` on Windows.
+
+   .. versionadded:: 3.13
 
 .. class:: AbstractEventLoop
 
@@ -1865,7 +1906,7 @@ Set signal handlers for SIGINT and SIGTERM
 
 (This ``signals`` example only works on Unix.)
 
-Register handlers for signals :py:data:`SIGINT` and :py:data:`SIGTERM`
+Register handlers for signals :const:`~signal.SIGINT` and :const:`~signal.SIGTERM`
 using the :meth:`loop.add_signal_handler` method::
 
     import asyncio
diff --git a/Doc/library/asyncio-exceptions.rst b/Doc/library/asyncio-exceptions.rst
index 9250f01b8a0895..7ad9103ca3fdfc 100644
--- a/Doc/library/asyncio-exceptions.rst
+++ b/Doc/library/asyncio-exceptions.rst
@@ -31,7 +31,7 @@ Exceptions
 
    .. versionchanged:: 3.8
 
-      :exc:`CancelledError` is now a subclass of :class:`BaseException`.
+      :exc:`CancelledError` is now a subclass of :class:`BaseException` rather than :class:`Exception`.
 
 
 .. exception:: InvalidStateError
diff --git a/Doc/library/asyncio-extending.rst b/Doc/library/asyncio-extending.rst
index 8ffd356f2d1cc3..e7b293f484f8de 100644
--- a/Doc/library/asyncio-extending.rst
+++ b/Doc/library/asyncio-extending.rst
@@ -69,7 +69,7 @@ Task lifetime support
 =====================
 
 A third party task implementation should call the following functions to keep a task
-visible by :func:`asyncio.get_tasks` and :func:`asyncio.current_task`:
+visible by :func:`asyncio.all_tasks` and :func:`asyncio.current_task`:
 
 .. function:: _register_task(task)
 
diff --git a/Doc/library/asyncio-future.rst b/Doc/library/asyncio-future.rst
index 70cec9b2f90248..893ae5518f757d 100644
--- a/Doc/library/asyncio-future.rst
+++ b/Doc/library/asyncio-future.rst
@@ -276,4 +276,4 @@ the Future has a result::
      :func:`concurrent.futures.as_completed` functions.
 
    - :meth:`asyncio.Future.cancel` accepts an optional ``msg`` argument,
-     but :func:`concurrent.futures.cancel` does not.
+     but :meth:`concurrent.futures.Future.cancel` does not.
diff --git a/Doc/library/asyncio-llapi-index.rst b/Doc/library/asyncio-llapi-index.rst
index 9ce48a24444e66..67136ba69ec875 100644
--- a/Doc/library/asyncio-llapi-index.rst
+++ b/Doc/library/asyncio-llapi-index.rst
@@ -484,19 +484,19 @@ Protocol classes can implement the following **callback methods**:
     :widths: 50 50
     :class: full-width-table
 
-    * - ``callback`` :meth:`pipe_data_received()
-        <SubprocessProtocol.pipe_data_received>`
+    * - ``callback`` :meth:`~SubprocessProtocol.pipe_data_received`
       - Called when the child process writes data into its
         *stdout* or *stderr* pipe.
 
-    * - ``callback`` :meth:`pipe_connection_lost()
-        <SubprocessProtocol.pipe_connection_lost>`
+    * - ``callback`` :meth:`~SubprocessProtocol.pipe_connection_lost`
       - Called when one of the pipes communicating with
         the child process is closed.
 
     * - ``callback`` :meth:`process_exited()
         <SubprocessProtocol.process_exited>`
-      - Called when the child process has exited.
+      - Called when the child process has exited. It can be called before
+        :meth:`~SubprocessProtocol.pipe_data_received` and
+        :meth:`~SubprocessProtocol.pipe_connection_lost` methods.
 
 
 Event Loop Policies
diff --git a/Doc/library/asyncio-platforms.rst b/Doc/library/asyncio-platforms.rst
index 50ad8a2ab70324..19ec726c1be060 100644
--- a/Doc/library/asyncio-platforms.rst
+++ b/Doc/library/asyncio-platforms.rst
@@ -37,7 +37,7 @@ All event loops on Windows do not support the following methods:
 
 * :meth:`loop.create_unix_connection` and
   :meth:`loop.create_unix_server` are not supported.
-  The :data:`socket.AF_UNIX` socket family is specific to Unix.
+  The :const:`socket.AF_UNIX` socket family is specific to Unix.
 
 * :meth:`loop.add_signal_handler` and
   :meth:`loop.remove_signal_handler` are not supported.
diff --git a/Doc/library/asyncio-protocol.rst b/Doc/library/asyncio-protocol.rst
index 7bc906eaafc1f2..3f734f544afe21 100644
--- a/Doc/library/asyncio-protocol.rst
+++ b/Doc/library/asyncio-protocol.rst
@@ -708,6 +708,9 @@ factories passed to the :meth:`loop.subprocess_exec` and
 
    Called when the child process has exited.
 
+   It can be called before :meth:`~SubprocessProtocol.pipe_data_received` and
+   :meth:`~SubprocessProtocol.pipe_connection_lost` methods.
+
 
 Examples
 ========
@@ -746,7 +749,7 @@ received data, and close the connection::
         loop = asyncio.get_running_loop()
 
         server = await loop.create_server(
-            lambda: EchoServerProtocol(),
+            EchoServerProtocol,
             '127.0.0.1', 8888)
 
         async with server:
@@ -850,7 +853,7 @@ method, sends back received data::
         # One protocol instance will be created to serve all
         # client requests.
         transport, protocol = await loop.create_datagram_endpoint(
-            lambda: EchoServerProtocol(),
+            EchoServerProtocol,
             local_addr=('127.0.0.1', 9999))
 
         try:
@@ -1003,12 +1006,26 @@ The subprocess is created by the :meth:`loop.subprocess_exec` method::
         def __init__(self, exit_future):
             self.exit_future = exit_future
             self.output = bytearray()
+            self.pipe_closed = False
+            self.exited = False
+
+        def pipe_connection_lost(self, fd, exc):
+            self.pipe_closed = True
+            self.check_for_exit()
 
         def pipe_data_received(self, fd, data):
             self.output.extend(data)
 
         def process_exited(self):
-            self.exit_future.set_result(True)
+            self.exited = True
+            # process_exited() method can be called before
+            # pipe_connection_lost() method: wait until both methods are
+            # called.
+            self.check_for_exit()
+
+        def check_for_exit(self):
+            if self.pipe_closed and self.exited:
+                self.exit_future.set_result(True)
 
     async def get_date():
         # Get a reference to the event loop as we plan to use
diff --git a/Doc/library/asyncio-runner.rst b/Doc/library/asyncio-runner.rst
index b68b2570ef071e..ec170dfde9e9aa 100644
--- a/Doc/library/asyncio-runner.rst
+++ b/Doc/library/asyncio-runner.rst
@@ -42,6 +42,8 @@ Running an asyncio Program
    This function should be used as a main entry point for asyncio programs,
    and should ideally only be called once. It is recommended to use
    *loop_factory* to configure the event loop instead of policies.
+   Passing :class:`asyncio.EventLoop` allows running asyncio without the
+   policy system.
 
    The executor is given a timeout duration of 5 minutes to shutdown.
    If the executor hasn't finished within that duration, a warning is
diff --git a/Doc/library/asyncio-stream.rst b/Doc/library/asyncio-stream.rst
index bbac1c32b5695f..0736e783bbc8c8 100644
--- a/Doc/library/asyncio-stream.rst
+++ b/Doc/library/asyncio-stream.rst
@@ -157,8 +157,8 @@ and work with streams:
    .. versionchanged:: 3.10
       Removed the *loop* parameter.
 
-  .. versionchanged:: 3.11
-     Added the *ssl_shutdown_timeout* parameter.
+   .. versionchanged:: 3.11
+      Added the *ssl_shutdown_timeout* parameter.
 
 
 .. coroutinefunction:: start_unix_server(client_connected_cb, path=None, \
@@ -204,6 +204,10 @@ StreamReader
    directly; use :func:`open_connection` and :func:`start_server`
    instead.
 
+   .. method:: feed_eof()
+
+      Acknowledge the EOF.
+
    .. coroutinemethod:: read(n=-1)
 
       Read up to *n* bytes from the stream.
diff --git a/Doc/library/asyncio-subprocess.rst b/Doc/library/asyncio-subprocess.rst
index b7c83aa04c09f1..bf35b1cb798aee 100644
--- a/Doc/library/asyncio-subprocess.rst
+++ b/Doc/library/asyncio-subprocess.rst
@@ -68,7 +68,7 @@ Creating Subprocesses
 
    The *limit* argument sets the buffer limit for :class:`StreamReader`
    wrappers for :attr:`Process.stdout` and :attr:`Process.stderr`
-   (if :attr:`subprocess.PIPE` is passed to *stdout* and *stderr* arguments).
+   (if :const:`subprocess.PIPE` is passed to *stdout* and *stderr* arguments).
 
    Return a :class:`~asyncio.subprocess.Process` instance.
 
@@ -86,7 +86,7 @@ Creating Subprocesses
 
    The *limit* argument sets the buffer limit for :class:`StreamReader`
    wrappers for :attr:`Process.stdout` and :attr:`Process.stderr`
-   (if :attr:`subprocess.PIPE` is passed to *stdout* and *stderr* arguments).
+   (if :const:`subprocess.PIPE` is passed to *stdout* and *stderr* arguments).
 
    Return a :class:`~asyncio.subprocess.Process` instance.
 
@@ -249,7 +249,7 @@ their completion.
 
       Stop the child process.
 
-      On POSIX systems this method sends :py:data:`signal.SIGTERM` to the
+      On POSIX systems this method sends :py:const:`signal.SIGTERM` to the
       child process.
 
       On Windows the Win32 API function :c:func:`TerminateProcess` is
diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
index fe8d028150403d..797065c8ccf894 100644
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -426,6 +426,9 @@ Sleeping
    .. versionchanged:: 3.10
       Removed the *loop* parameter.
 
+   .. versionchanged:: 3.13
+      Raises :exc:`ValueError` if *delay* is :data:`~math.nan`.
+
 
 Running Tasks Concurrently
 ==========================
@@ -628,9 +631,9 @@ Shielding From Cancellation
 Timeouts
 ========
 
-.. coroutinefunction:: timeout(delay)
+.. function:: timeout(delay)
 
-    An :ref:`asynchronous context manager <async-context-managers>`
+    Return an :ref:`asynchronous context manager <async-context-managers>`
     that can be used to limit the amount of time spent waiting on
     something.
 
@@ -651,16 +654,16 @@ Timeouts
     If ``long_running_task`` takes more than 10 seconds to complete,
     the context manager will cancel the current task and handle
     the resulting :exc:`asyncio.CancelledError` internally, transforming it
-    into an :exc:`asyncio.TimeoutError` which can be caught and handled.
+    into a :exc:`TimeoutError` which can be caught and handled.
 
     .. note::
 
       The :func:`asyncio.timeout` context manager is what transforms
-      the :exc:`asyncio.CancelledError` into an :exc:`asyncio.TimeoutError`,
-      which means the :exc:`asyncio.TimeoutError` can only be caught
+      the :exc:`asyncio.CancelledError` into a :exc:`TimeoutError`,
+      which means the :exc:`TimeoutError` can only be caught
       *outside* of the context manager.
 
-    Example of catching :exc:`asyncio.TimeoutError`::
+    Example of catching :exc:`TimeoutError`::
 
         async def main():
             try:
@@ -721,7 +724,7 @@ Timeouts
 
     .. versionadded:: 3.11
 
-.. coroutinefunction:: timeout_at(when)
+.. function:: timeout_at(when)
 
    Similar to :func:`asyncio.timeout`, except *when* is the absolute time
    to stop waiting, or ``None``.
@@ -764,9 +767,6 @@ Timeouts
 
    If the wait is cancelled, the future *aw* is also cancelled.
 
-   .. versionchanged:: 3.10
-      Removed the *loop* parameter.
-
    .. _asyncio_example_waitfor:
 
    Example::
@@ -797,6 +797,9 @@ Timeouts
    .. versionchanged:: 3.10
       Removed the *loop* parameter.
 
+   .. versionchanged:: 3.11
+      Raises :exc:`TimeoutError` instead of :exc:`asyncio.TimeoutError`.
+
 
 Waiting Primitives
 ==================
diff --git a/Doc/library/asyncio.rst b/Doc/library/asyncio.rst
index c6a046f534e9a1..5f33c6813e74c0 100644
--- a/Doc/library/asyncio.rst
+++ b/Doc/library/asyncio.rst
@@ -46,9 +46,9 @@ Additionally, there are **low-level** APIs for
 *library and framework developers* to:
 
 * create and manage :ref:`event loops <asyncio-event-loop>`, which
-  provide asynchronous APIs for :meth:`networking <loop.create_server>`,
-  running :meth:`subprocesses <loop.subprocess_exec>`,
-  handling :meth:`OS signals <loop.add_signal_handler>`, etc;
+  provide asynchronous APIs for :ref:`networking <loop_create_server>`,
+  running :ref:`subprocesses <loop_subprocess_exec>`,
+  handling :ref:`OS signals <loop_add_signal_handler>`, etc;
 
 * implement efficient protocols using
   :ref:`transports <asyncio-transports-protocols>`;
@@ -56,6 +56,8 @@ Additionally, there are **low-level** APIs for
 * :ref:`bridge <asyncio-futures>` callback-based libraries and code
   with async/await syntax.
 
+.. _asyncio-cli:
+
 You can experiment with an ``asyncio`` concurrent context in the REPL:
 
 .. code-block:: pycon
diff --git a/Doc/library/atexit.rst b/Doc/library/atexit.rst
index a2bd85b31c9a8d..3dbef69580d9b3 100644
--- a/Doc/library/atexit.rst
+++ b/Doc/library/atexit.rst
@@ -48,6 +48,16 @@ a cleanup function is undefined.
    This function returns *func*, which makes it possible to use it as a
    decorator.
 
+   .. warning::
+       Starting new threads or calling :func:`os.fork` from a registered
+       function can lead to race condition between the main Python
+       runtime thread freeing thread states while internal :mod:`threading`
+       routines or the new process try to use that state. This can lead to
+       crashes rather than clean shutdown.
+
+   .. versionchanged:: 3.12
+       Attempts to start a new thread or :func:`os.fork` a new process
+       in a registered function now leads to :exc:`RuntimeError`.
 
 .. function:: unregister(func)
 
diff --git a/Doc/library/audioop.rst b/Doc/library/audioop.rst
deleted file mode 100644
index 1f96575d08f5b1..00000000000000
--- a/Doc/library/audioop.rst
+++ /dev/null
@@ -1,287 +0,0 @@
-:mod:`audioop` --- Manipulate raw audio data
-============================================
-
-.. module:: audioop
-   :synopsis: Manipulate raw audio data.
-   :deprecated:
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`audioop` module is deprecated
-   (see :pep:`PEP 594 <594#audioop>` for details).
-
---------------
-
-The :mod:`audioop` module contains some useful operations on sound fragments.
-It operates on sound fragments consisting of signed integer samples 8, 16, 24
-or 32 bits wide, stored in :term:`bytes-like objects <bytes-like object>`.  All scalar items are
-integers, unless specified otherwise.
-
-.. versionchanged:: 3.4
-   Support for 24-bit samples was added.
-   All functions now accept any :term:`bytes-like object`.
-   String input now results in an immediate error.
-
-.. index::
-   single: Intel/DVI ADPCM
-   single: ADPCM, Intel/DVI
-   single: a-LAW
-   single: u-LAW
-
-This module provides support for a-LAW, u-LAW and Intel/DVI ADPCM encodings.
-
-.. This para is mostly here to provide an excuse for the index entries...
-
-A few of the more complicated operations only take 16-bit samples, otherwise the
-sample size (in bytes) is always a parameter of the operation.
-
-The module defines the following variables and functions:
-
-
-.. exception:: error
-
-   This exception is raised on all errors, such as unknown number of bytes per
-   sample, etc.
-
-
-.. function:: add(fragment1, fragment2, width)
-
-   Return a fragment which is the addition of the two samples passed as parameters.
-   *width* is the sample width in bytes, either ``1``, ``2``, ``3`` or ``4``.  Both
-   fragments should have the same length.  Samples are truncated in case of overflow.
-
-
-.. function:: adpcm2lin(adpcmfragment, width, state)
-
-   Decode an Intel/DVI ADPCM coded fragment to a linear fragment.  See the
-   description of :func:`lin2adpcm` for details on ADPCM coding. Return a tuple
-   ``(sample, newstate)`` where the sample has the width specified in *width*.
-
-
-.. function:: alaw2lin(fragment, width)
-
-   Convert sound fragments in a-LAW encoding to linearly encoded sound fragments.
-   a-LAW encoding always uses 8 bits samples, so *width* refers only to the sample
-   width of the output fragment here.
-
-
-.. function:: avg(fragment, width)
-
-   Return the average over all samples in the fragment.
-
-
-.. function:: avgpp(fragment, width)
-
-   Return the average peak-peak value over all samples in the fragment. No
-   filtering is done, so the usefulness of this routine is questionable.
-
-
-.. function:: bias(fragment, width, bias)
-
-   Return a fragment that is the original fragment with a bias added to each
-   sample.  Samples wrap around in case of overflow.
-
-
-.. function:: byteswap(fragment, width)
-
-   "Byteswap" all samples in a fragment and returns the modified fragment.
-   Converts big-endian samples to little-endian and vice versa.
-
-   .. versionadded:: 3.4
-
-
-.. function:: cross(fragment, width)
-
-   Return the number of zero crossings in the fragment passed as an argument.
-
-
-.. function:: findfactor(fragment, reference)
-
-   Return a factor *F* such that ``rms(add(fragment, mul(reference, -F)))`` is
-   minimal, i.e., return the factor with which you should multiply *reference* to
-   make it match as well as possible to *fragment*.  The fragments should both
-   contain 2-byte samples.
-
-   The time taken by this routine is proportional to ``len(fragment)``.
-
-
-.. function:: findfit(fragment, reference)
-
-   Try to match *reference* as well as possible to a portion of *fragment* (which
-   should be the longer fragment).  This is (conceptually) done by taking slices
-   out of *fragment*, using :func:`findfactor` to compute the best match, and
-   minimizing the result.  The fragments should both contain 2-byte samples.
-   Return a tuple ``(offset, factor)`` where *offset* is the (integer) offset into
-   *fragment* where the optimal match started and *factor* is the (floating-point)
-   factor as per :func:`findfactor`.
-
-
-.. function:: findmax(fragment, length)
-
-   Search *fragment* for a slice of length *length* samples (not bytes!) with
-   maximum energy, i.e., return *i* for which ``rms(fragment[i*2:(i+length)*2])``
-   is maximal.  The fragments should both contain 2-byte samples.
-
-   The routine takes time proportional to ``len(fragment)``.
-
-
-.. function:: getsample(fragment, width, index)
-
-   Return the value of sample *index* from the fragment.
-
-
-.. function:: lin2adpcm(fragment, width, state)
-
-   Convert samples to 4 bit Intel/DVI ADPCM encoding.  ADPCM coding is an adaptive
-   coding scheme, whereby each 4 bit number is the difference between one sample
-   and the next, divided by a (varying) step.  The Intel/DVI ADPCM algorithm has
-   been selected for use by the IMA, so it may well become a standard.
-
-   *state* is a tuple containing the state of the coder.  The coder returns a tuple
-   ``(adpcmfrag, newstate)``, and the *newstate* should be passed to the next call
-   of :func:`lin2adpcm`.  In the initial call, ``None`` can be passed as the state.
-   *adpcmfrag* is the ADPCM coded fragment packed 2 4-bit values per byte.
-
-
-.. function:: lin2alaw(fragment, width)
-
-   Convert samples in the audio fragment to a-LAW encoding and return this as a
-   bytes object.  a-LAW is an audio encoding format whereby you get a dynamic
-   range of about 13 bits using only 8 bit samples.  It is used by the Sun audio
-   hardware, among others.
-
-
-.. function:: lin2lin(fragment, width, newwidth)
-
-   Convert samples between 1-, 2-, 3- and 4-byte formats.
-
-   .. note::
-
-      In some audio formats, such as .WAV files, 16, 24 and 32 bit samples are
-      signed, but 8 bit samples are unsigned.  So when converting to 8 bit wide
-      samples for these formats, you need to also add 128 to the result::
-
-         new_frames = audioop.lin2lin(frames, old_width, 1)
-         new_frames = audioop.bias(new_frames, 1, 128)
-
-      The same, in reverse, has to be applied when converting from 8 to 16, 24
-      or 32 bit width samples.
-
-
-.. function:: lin2ulaw(fragment, width)
-
-   Convert samples in the audio fragment to u-LAW encoding and return this as a
-   bytes object.  u-LAW is an audio encoding format whereby you get a dynamic
-   range of about 14 bits using only 8 bit samples.  It is used by the Sun audio
-   hardware, among others.
-
-
-.. function:: max(fragment, width)
-
-   Return the maximum of the *absolute value* of all samples in a fragment.
-
-
-.. function:: maxpp(fragment, width)
-
-   Return the maximum peak-peak value in the sound fragment.
-
-
-.. function:: minmax(fragment, width)
-
-   Return a tuple consisting of the minimum and maximum values of all samples in
-   the sound fragment.
-
-
-.. function:: mul(fragment, width, factor)
-
-   Return a fragment that has all samples in the original fragment multiplied by
-   the floating-point value *factor*.  Samples are truncated in case of overflow.
-
-
-.. function:: ratecv(fragment, width, nchannels, inrate, outrate, state[, weightA[, weightB]])
-
-   Convert the frame rate of the input fragment.
-
-   *state* is a tuple containing the state of the converter.  The converter returns
-   a tuple ``(newfragment, newstate)``, and *newstate* should be passed to the next
-   call of :func:`ratecv`.  The initial call should pass ``None`` as the state.
-
-   The *weightA* and *weightB* arguments are parameters for a simple digital filter
-   and default to ``1`` and ``0`` respectively.
-
-
-.. function:: reverse(fragment, width)
-
-   Reverse the samples in a fragment and returns the modified fragment.
-
-
-.. function:: rms(fragment, width)
-
-   Return the root-mean-square of the fragment, i.e. ``sqrt(sum(S_i^2)/n)``.
-
-   This is a measure of the power in an audio signal.
-
-
-.. function:: tomono(fragment, width, lfactor, rfactor)
-
-   Convert a stereo fragment to a mono fragment.  The left channel is multiplied by
-   *lfactor* and the right channel by *rfactor* before adding the two channels to
-   give a mono signal.
-
-
-.. function:: tostereo(fragment, width, lfactor, rfactor)
-
-   Generate a stereo fragment from a mono fragment.  Each pair of samples in the
-   stereo fragment are computed from the mono sample, whereby left channel samples
-   are multiplied by *lfactor* and right channel samples by *rfactor*.
-
-
-.. function:: ulaw2lin(fragment, width)
-
-   Convert sound fragments in u-LAW encoding to linearly encoded sound fragments.
-   u-LAW encoding always uses 8 bits samples, so *width* refers only to the sample
-   width of the output fragment here.
-
-Note that operations such as :func:`.mul` or :func:`.max` make no distinction
-between mono and stereo fragments, i.e. all samples are treated equal.  If this
-is a problem the stereo fragment should be split into two mono fragments first
-and recombined later.  Here is an example of how to do that::
-
-   def mul_stereo(sample, width, lfactor, rfactor):
-       lsample = audioop.tomono(sample, width, 1, 0)
-       rsample = audioop.tomono(sample, width, 0, 1)
-       lsample = audioop.mul(lsample, width, lfactor)
-       rsample = audioop.mul(rsample, width, rfactor)
-       lsample = audioop.tostereo(lsample, width, 1, 0)
-       rsample = audioop.tostereo(rsample, width, 0, 1)
-       return audioop.add(lsample, rsample, width)
-
-If you use the ADPCM coder to build network packets and you want your protocol
-to be stateless (i.e. to be able to tolerate packet loss) you should not only
-transmit the data but also the state.  Note that you should send the *initial*
-state (the one you passed to :func:`lin2adpcm`) along to the decoder, not the
-final state (as returned by the coder).  If you want to use
-:class:`struct.Struct` to store the state in binary you can code the first
-element (the predicted value) in 16 bits and the second (the delta index) in 8.
-
-The ADPCM coders have never been tried against other ADPCM coders, only against
-themselves.  It could well be that I misinterpreted the standards in which case
-they will not be interoperable with the respective standards.
-
-The :func:`find\*` routines might look a bit funny at first sight. They are
-primarily meant to do echo cancellation.  A reasonably fast way to do this is to
-pick the most energetic piece of the output sample, locate that in the input
-sample and subtract the whole output sample from the input sample::
-
-   def echocancel(outputdata, inputdata):
-       pos = audioop.findmax(outputdata, 800)    # one tenth second
-       out_test = outputdata[pos*2:]
-       in_test = inputdata[pos*2:]
-       ipos, factor = audioop.findfit(in_test, out_test)
-       # Optional (for better cancellation):
-       # factor = audioop.findfactor(in_test[ipos*2:ipos*2+len(out_test)],
-       #              out_test)
-       prefill = '\0'*(pos+ipos)*2
-       postfill = '\0'*(len(inputdata)-len(prefill)-len(outputdata))
-       outputdata = prefill + audioop.mul(outputdata, 2, -factor) + postfill
-       return audioop.add(inputdata, outputdata, 2)
-
diff --git a/Doc/library/binascii.rst b/Doc/library/binascii.rst
index 21960cb7972e6e..39fabb59bb1984 100644
--- a/Doc/library/binascii.rst
+++ b/Doc/library/binascii.rst
@@ -6,14 +6,13 @@
               representations.
 
 .. index::
-   pair: module; uu
    pair: module; base64
 
 --------------
 
 The :mod:`binascii` module contains a number of methods to convert between
 binary and various ASCII-encoded binary representations. Normally, you will not
-use these functions directly but use wrapper modules like :mod:`uu` or
+use these functions directly but use wrapper modules like
 :mod:`base64` instead. The :mod:`binascii` module contains
 low-level functions written in C for greater speed that are used by the
 higher-level modules.
@@ -58,10 +57,11 @@ The :mod:`binascii` module defines the following functions:
    data will raise :exc:`binascii.Error`.
 
    Valid base64:
-      * Conforms to :rfc:`3548`.
-      * Contains only characters from the base64 alphabet.
-      * Contains no excess data after padding (including excess padding, newlines, etc.).
-      * Does not start with a padding.
+
+   * Conforms to :rfc:`3548`.
+   * Contains only characters from the base64 alphabet.
+   * Contains no excess data after padding (including excess padding, newlines, etc.).
+   * Does not start with a padding.
 
    .. versionchanged:: 3.11
       Added the *strict_mode* parameter.
@@ -179,8 +179,5 @@ The :mod:`binascii` module defines the following functions:
       Support for RFC compliant base64-style encoding in base 16, 32, 64,
       and 85.
 
-   Module :mod:`uu`
-      Support for UU encoding used on Unix.
-
    Module :mod:`quopri`
       Support for quoted-printable encoding used in MIME email messages.
diff --git a/Doc/library/bz2.rst b/Doc/library/bz2.rst
index 32df99869eb530..6a95a4a6e8d183 100644
--- a/Doc/library/bz2.rst
+++ b/Doc/library/bz2.rst
@@ -87,10 +87,11 @@ The :mod:`bz2` module contains:
    compressed streams.
 
    :class:`BZ2File` provides all of the members specified by the
-   :class:`io.BufferedIOBase`, except for :meth:`detach` and :meth:`truncate`.
+   :class:`io.BufferedIOBase`, except for :meth:`~io.BufferedIOBase.detach`
+   and :meth:`~io.IOBase.truncate`.
    Iteration and the :keyword:`with` statement are supported.
 
-   :class:`BZ2File` also provides the following method:
+   :class:`BZ2File` also provides the following methods:
 
    .. method:: peek([n])
 
@@ -105,14 +106,52 @@ The :mod:`bz2` module contains:
 
       .. versionadded:: 3.3
 
+   .. method:: fileno()
+
+      Return the file descriptor for the underlying file.
+
+      .. versionadded:: 3.3
+
+   .. method:: readable()
+
+      Return whether the file was opened for reading.
+
+      .. versionadded:: 3.3
+
+   .. method:: seekable()
+
+      Return whether the file supports seeking.
+
+      .. versionadded:: 3.3
+
+   .. method:: writable()
+
+      Return whether the file was opened for writing.
+
+      .. versionadded:: 3.3
+
+   .. method:: read1(size=-1)
+
+      Read up to *size* uncompressed bytes, while trying to avoid
+      making multiple reads from the underlying stream. Reads up to a
+      buffer's worth of data if size is negative.
+
+      Returns ``b''`` if the file is at EOF.
+
+      .. versionadded:: 3.3
+
+   .. method:: readinto(b)
+
+      Read bytes into *b*.
+
+      Returns the number of bytes read (0 for EOF).
+
+      .. versionadded:: 3.3
+
 
    .. versionchanged:: 3.1
       Support for the :keyword:`with` statement was added.
 
-   .. versionchanged:: 3.3
-      The :meth:`fileno`, :meth:`readable`, :meth:`seekable`, :meth:`writable`,
-      :meth:`read1` and :meth:`readinto` methods were added.
-
    .. versionchanged:: 3.3
       Support was added for *filename* being a :term:`file object` instead of an
       actual filename.
diff --git a/Doc/library/calendar.rst b/Doc/library/calendar.rst
index 07d04a1c7b582a..157a7537f97dc6 100644
--- a/Doc/library/calendar.rst
+++ b/Doc/library/calendar.rst
@@ -28,58 +28,6 @@ interpreted as prescribed by the ISO 8601 standard.  Year 0 is 1 BC, year -1 is
 2 BC, and so on.
 
 
-.. class:: Day
-
-   Enumeration defining the days of the week as integer constants, from 0 to 6.
-
-   .. attribute:: MONDAY
-
-   .. attribute:: TUESDAY
-
-   .. attribute:: WEDNESDAY
-
-   .. attribute:: THURSDAY
-
-   .. attribute:: FRIDAY
-
-   .. attribute:: SATURDAY
-
-   .. attribute:: SUNDAY
-
-   .. versionadded:: 3.12
-
-
-.. class:: Month
-
-   Enumeration defining months of the year as integer constants, from 1 to 12.
-
-   .. attribute:: JANUARY
-
-   .. attribute:: FEBRUARY
-
-   .. attribute:: MARCH
-
-   .. attribute:: APRIL
-
-   .. attribute:: MAY
-
-   .. attribute:: JUNE
-
-   .. attribute:: JULY
-
-   .. attribute:: AUGUST
-
-   .. attribute:: SEPTEMBER
-
-   .. attribute:: OCTOBER
-
-   .. attribute:: NOVEMBER
-
-   .. attribute:: DECEMBER
-
-   .. versionadded:: 3.12
-
-
 .. class:: Calendar(firstweekday=0)
 
    Creates a :class:`Calendar` object. *firstweekday* is an integer specifying the
@@ -446,6 +394,29 @@ The :mod:`calendar` module exports the following data attributes:
    An array that represents the abbreviated days of the week in the current locale.
 
 
+.. data:: MONDAY
+          TUESDAY
+          WEDNESDAY
+          THURSDAY
+          FRIDAY
+          SATURDAY
+          SUNDAY
+
+   Aliases for the days of the week,
+   where ``MONDAY`` is ``0`` and ``SUNDAY`` is ``6``.
+
+   .. versionadded:: 3.12
+
+
+.. class:: Day
+
+   Enumeration defining days of the week as integer constants.
+   The members of this enumeration are exported to the module scope as
+   :data:`MONDAY` through :data:`SUNDAY`.
+
+   .. versionadded:: 3.12
+
+
 .. data:: month_name
 
    An array that represents the months of the year in the current locale.  This
@@ -459,15 +430,56 @@ The :mod:`calendar` module exports the following data attributes:
    locale.  This follows normal convention of January being month number 1, so it
    has a length of 13 and  ``month_abbr[0]`` is the empty string.
 
-.. data:: MONDAY
-          TUESDAY
-          WEDNESDAY
-          THURSDAY
-          FRIDAY
-          SATURDAY
-          SUNDAY
 
-   Aliases for day numbers, where ``MONDAY`` is ``0`` and ``SUNDAY`` is ``6``.
+.. data:: JANUARY
+          FEBRUARY
+          MARCH
+          APRIL
+          MAY
+          JUNE
+          JULY
+          AUGUST
+          SEPTEMBER
+          OCTOBER
+          NOVEMBER
+          DECEMBER
+
+   Aliases for the months of the year,
+   where ``JANUARY`` is ``1`` and ``DECEMBER`` is ``12``.
+
+   .. versionadded:: 3.12
+
+
+.. class:: Month
+
+   Enumeration defining months of the year as integer constants.
+   The members of this enumeration are exported to the module scope as
+   :data:`JANUARY` through :data:`DECEMBER`.
+
+   .. versionadded:: 3.12
+
+
+The :mod:`calendar` module defines the following exceptions:
+
+.. exception:: IllegalMonthError(month)
+
+   A subclass of :exc:`ValueError`,
+   raised when the given month number is outside of the range 1-12 (inclusive).
+
+   .. attribute:: month
+
+      The invalid month number.
+
+
+.. exception:: IllegalWeekdayError(weekday)
+
+   A subclass of :exc:`ValueError`,
+   raised when the given weekday number is outside of the range 0-6 (inclusive).
+
+   .. attribute:: weekday
+
+      The invalid weekday number.
+
 
 .. seealso::
 
@@ -477,3 +489,146 @@ The :mod:`calendar` module exports the following data attributes:
 
    Module :mod:`time`
       Low-level time related functions.
+
+
+.. _calendar-cli:
+
+Command-Line Usage
+------------------
+
+.. versionadded:: 2.5
+
+The :mod:`calendar` module can be executed as a script from the command line
+to interactively print a calendar.
+
+.. code-block:: shell
+
+   python -m calendar [-h] [-L LOCALE] [-e ENCODING] [-t {text,html}]
+                      [-w WIDTH] [-l LINES] [-s SPACING] [-m MONTHS] [-c CSS]
+                      [year] [month]
+
+
+For example, to print a calendar for the year 2000:
+
+.. code-block:: console
+
+   $ python -m calendar 2000
+                                     2000
+
+         January                   February                   March
+   Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
+                   1  2          1  2  3  4  5  6             1  2  3  4  5
+    3  4  5  6  7  8  9       7  8  9 10 11 12 13       6  7  8  9 10 11 12
+   10 11 12 13 14 15 16      14 15 16 17 18 19 20      13 14 15 16 17 18 19
+   17 18 19 20 21 22 23      21 22 23 24 25 26 27      20 21 22 23 24 25 26
+   24 25 26 27 28 29 30      28 29                     27 28 29 30 31
+   31
+
+          April                      May                       June
+   Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
+                   1  2       1  2  3  4  5  6  7                1  2  3  4
+    3  4  5  6  7  8  9       8  9 10 11 12 13 14       5  6  7  8  9 10 11
+   10 11 12 13 14 15 16      15 16 17 18 19 20 21      12 13 14 15 16 17 18
+   17 18 19 20 21 22 23      22 23 24 25 26 27 28      19 20 21 22 23 24 25
+   24 25 26 27 28 29 30      29 30 31                  26 27 28 29 30
+
+           July                     August                  September
+   Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
+                   1  2          1  2  3  4  5  6                   1  2  3
+    3  4  5  6  7  8  9       7  8  9 10 11 12 13       4  5  6  7  8  9 10
+   10 11 12 13 14 15 16      14 15 16 17 18 19 20      11 12 13 14 15 16 17
+   17 18 19 20 21 22 23      21 22 23 24 25 26 27      18 19 20 21 22 23 24
+   24 25 26 27 28 29 30      28 29 30 31               25 26 27 28 29 30
+   31
+
+         October                   November                  December
+   Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
+                      1             1  2  3  4  5                   1  2  3
+    2  3  4  5  6  7  8       6  7  8  9 10 11 12       4  5  6  7  8  9 10
+    9 10 11 12 13 14 15      13 14 15 16 17 18 19      11 12 13 14 15 16 17
+   16 17 18 19 20 21 22      20 21 22 23 24 25 26      18 19 20 21 22 23 24
+   23 24 25 26 27 28 29      27 28 29 30               25 26 27 28 29 30 31
+   30 31
+
+
+The following options are accepted:
+
+.. program:: calendar
+
+
+.. option:: --help, -h
+
+   Show the help message and exit.
+
+
+.. option:: --locale LOCALE, -L LOCALE
+
+   The locale to use for month and weekday names.
+   Defaults to English.
+
+
+.. option:: --encoding ENCODING, -e ENCODING
+
+   The encoding to use for output.
+   :option:`--encoding` is required if :option:`--locale` is set.
+
+
+.. option:: --type {text,html}, -t {text,html}
+
+   Print the calendar to the terminal as text,
+   or as an HTML document.
+
+
+.. option:: year
+
+   The year to print the calendar for.
+   Must be a number between 1 and 9999.
+   Defaults to the current year.
+
+
+.. option:: month
+
+   The month of the specified :option:`year` to print the calendar for.
+   Must be a number between 1 and 12,
+   and may only be used in text mode.
+   Defaults to printing a calendar for the full year.
+
+
+*Text-mode options:*
+
+.. option:: --width WIDTH, -w WIDTH
+
+   The width of the date column in terminal columns.
+   The date is printed centred in the column.
+   Any value lower than 2 is ignored.
+   Defaults to 2.
+
+
+.. option:: --lines LINES, -l LINES
+
+   The number of lines for each week in terminal rows.
+   The date is printed top-aligned.
+   Any value lower than 1 is ignored.
+   Defaults to 1.
+
+
+.. option:: --spacing SPACING, -s SPACING
+
+   The space between months in columns.
+   Any value lower than 2 is ignored.
+   Defaults to 6.
+
+
+.. option:: --months MONTHS, -m MONTHS
+
+   The number of months printed per row.
+   Defaults to 3.
+
+
+*HTML-mode options:*
+
+.. option:: --css CSS, -c CSS
+
+   The path of a CSS stylesheet to use for the calendar.
+   This must either be relative to the generated HTML,
+   or an absolute HTTP or ``file:///`` URL.
diff --git a/Doc/library/cgi.rst b/Doc/library/cgi.rst
deleted file mode 100644
index 295a601a7bf197..00000000000000
--- a/Doc/library/cgi.rst
+++ /dev/null
@@ -1,564 +0,0 @@
-:mod:`cgi` --- Common Gateway Interface support
-===============================================
-
-.. module:: cgi
-   :synopsis: Helpers for running Python scripts via the Common Gateway Interface.
-   :deprecated:
-
-**Source code:** :source:`Lib/cgi.py`
-
-.. index::
-   pair: WWW; server
-   pair: CGI; protocol
-   pair: HTTP; protocol
-   pair: MIME; headers
-   single: URL
-   single: Common Gateway Interface
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`cgi` module is deprecated
-   (see :pep:`PEP 594 <594#cgi>` for details and alternatives).
-
-   The :class:`FieldStorage` class can typically be replaced with
-   :func:`urllib.parse.parse_qsl` for ``GET`` and ``HEAD`` requests,
-   and the :mod:`email.message` module or
-   `multipart <https://pypi.org/project/multipart/>`_ for ``POST`` and ``PUT``.
-   Most :ref:`utility functions <functions-in-cgi-module>` have replacements.
-
---------------
-
-Support module for Common Gateway Interface (CGI) scripts.
-
-This module defines a number of utilities for use by CGI scripts written in
-Python.
-
-The global variable ``maxlen`` can be set to an integer indicating the maximum
-size of a POST request. POST requests larger than this size will result in a
-:exc:`ValueError` being raised during parsing. The default value of this
-variable is ``0``, meaning the request size is unlimited.
-
-.. include:: ../includes/wasm-notavail.rst
-
-Introduction
-------------
-
-.. _cgi-intro:
-
-A CGI script is invoked by an HTTP server, usually to process user input
-submitted through an HTML ``<FORM>`` or ``<ISINDEX>`` element.
-
-Most often, CGI scripts live in the server's special :file:`cgi-bin` directory.
-The HTTP server places all sorts of information about the request (such as the
-client's hostname, the requested URL, the query string, and lots of other
-goodies) in the script's shell environment, executes the script, and sends the
-script's output back to the client.
-
-The script's input is connected to the client too, and sometimes the form data
-is read this way; at other times the form data is passed via the "query string"
-part of the URL.  This module is intended to take care of the different cases
-and provide a simpler interface to the Python script.  It also provides a number
-of utilities that help in debugging scripts, and the latest addition is support
-for file uploads from a form (if your browser supports it).
-
-The output of a CGI script should consist of two sections, separated by a blank
-line.  The first section contains a number of headers, telling the client what
-kind of data is following.  Python code to generate a minimal header section
-looks like this::
-
-   print("Content-Type: text/html")    # HTML is following
-   print()                             # blank line, end of headers
-
-The second section is usually HTML, which allows the client software to display
-nicely formatted text with header, in-line images, etc. Here's Python code that
-prints a simple piece of HTML::
-
-   print("<TITLE>CGI script output</TITLE>")
-   print("<H1>This is my first CGI script</H1>")
-   print("Hello, world!")
-
-
-.. _using-the-cgi-module:
-
-Using the cgi module
---------------------
-
-Begin by writing ``import cgi``.
-
-When you write a new script, consider adding these lines::
-
-   import cgitb
-   cgitb.enable()
-
-This activates a special exception handler that will display detailed reports in
-the web browser if any errors occur.  If you'd rather not show the guts of your
-program to users of your script, you can have the reports saved to files
-instead, with code like this::
-
-   import cgitb
-   cgitb.enable(display=0, logdir="/path/to/logdir")
-
-It's very helpful to use this feature during script development. The reports
-produced by :mod:`cgitb` provide information that can save you a lot of time in
-tracking down bugs.  You can always remove the ``cgitb`` line later when you
-have tested your script and are confident that it works correctly.
-
-To get at submitted form data, use the :class:`FieldStorage` class. If the form
-contains non-ASCII characters, use the *encoding* keyword parameter set to the
-value of the encoding defined for the document. It is usually contained in the
-META tag in the HEAD section of the HTML document or by the
-:mailheader:`Content-Type` header.  This reads the form contents from the
-standard input or the environment (depending on the value of various
-environment variables set according to the CGI standard).  Since it may consume
-standard input, it should be instantiated only once.
-
-The :class:`FieldStorage` instance can be indexed like a Python dictionary.
-It allows membership testing with the :keyword:`in` operator, and also supports
-the standard dictionary method :meth:`~dict.keys` and the built-in function
-:func:`len`.  Form fields containing empty strings are ignored and do not appear
-in the dictionary; to keep such values, provide a true value for the optional
-*keep_blank_values* keyword parameter when creating the :class:`FieldStorage`
-instance.
-
-For instance, the following code (which assumes that the
-:mailheader:`Content-Type` header and blank line have already been printed)
-checks that the fields ``name`` and ``addr`` are both set to a non-empty
-string::
-
-   form = cgi.FieldStorage()
-   if "name" not in form or "addr" not in form:
-       print("<H1>Error</H1>")
-       print("Please fill in the name and addr fields.")
-       return
-   print("<p>name:", form["name"].value)
-   print("<p>addr:", form["addr"].value)
-   ...further form processing here...
-
-Here the fields, accessed through ``form[key]``, are themselves instances of
-:class:`FieldStorage` (or :class:`MiniFieldStorage`, depending on the form
-encoding). The :attr:`~FieldStorage.value` attribute of the instance yields
-the string value of the field.  The :meth:`~FieldStorage.getvalue` method
-returns this string value directly; it also accepts an optional second argument
-as a default to return if the requested key is not present.
-
-If the submitted form data contains more than one field with the same name, the
-object retrieved by ``form[key]`` is not a :class:`FieldStorage` or
-:class:`MiniFieldStorage` instance but a list of such instances.  Similarly, in
-this situation, ``form.getvalue(key)`` would return a list of strings. If you
-expect this possibility (when your HTML form contains multiple fields with the
-same name), use the :meth:`~FieldStorage.getlist` method, which always returns
-a list of values (so that you do not need to special-case the single item
-case).  For example, this code concatenates any number of username fields,
-separated by commas::
-
-   value = form.getlist("username")
-   usernames = ",".join(value)
-
-If a field represents an uploaded file, accessing the value via the
-:attr:`~FieldStorage.value` attribute or the :meth:`~FieldStorage.getvalue`
-method reads the entire file in memory as bytes.  This may not be what you
-want.  You can test for an uploaded file by testing either the
-:attr:`~FieldStorage.filename` attribute or the :attr:`~FieldStorage.file`
-attribute.  You can then read the data from the :attr:`!file`
-attribute before it is automatically closed as part of the garbage collection of
-the :class:`FieldStorage` instance
-(the :func:`~io.RawIOBase.read` and :func:`~io.IOBase.readline` methods will
-return bytes)::
-
-   fileitem = form["userfile"]
-   if fileitem.file:
-       # It's an uploaded file; count lines
-       linecount = 0
-       while True:
-           line = fileitem.file.readline()
-           if not line: break
-           linecount = linecount + 1
-
-:class:`FieldStorage` objects also support being used in a :keyword:`with`
-statement, which will automatically close them when done.
-
-If an error is encountered when obtaining the contents of an uploaded file
-(for example, when the user interrupts the form submission by clicking on
-a Back or Cancel button) the :attr:`~FieldStorage.done` attribute of the
-object for the field will be set to the value -1.
-
-The file upload draft standard entertains the possibility of uploading multiple
-files from one field (using a recursive :mimetype:`multipart/\*` encoding).
-When this occurs, the item will be a dictionary-like :class:`FieldStorage` item.
-This can be determined by testing its :attr:`!type` attribute, which should be
-:mimetype:`multipart/form-data` (or perhaps another MIME type matching
-:mimetype:`multipart/\*`).  In this case, it can be iterated over recursively
-just like the top-level form object.
-
-When a form is submitted in the "old" format (as the query string or as a single
-data part of type :mimetype:`application/x-www-form-urlencoded`), the items will
-actually be instances of the class :class:`MiniFieldStorage`.  In this case, the
-:attr:`!list`, :attr:`!file`, and :attr:`filename` attributes are always ``None``.
-
-A form submitted via POST that also has a query string will contain both
-:class:`FieldStorage` and :class:`MiniFieldStorage` items.
-
-.. versionchanged:: 3.4
-   The :attr:`~FieldStorage.file` attribute is automatically closed upon the
-   garbage collection of the creating :class:`FieldStorage` instance.
-
-.. versionchanged:: 3.5
-   Added support for the context management protocol to the
-   :class:`FieldStorage` class.
-
-
-Higher Level Interface
-----------------------
-
-The previous section explains how to read CGI form data using the
-:class:`FieldStorage` class.  This section describes a higher level interface
-which was added to this class to allow one to do it in a more readable and
-intuitive way.  The interface doesn't make the techniques described in previous
-sections obsolete --- they are still useful to process file uploads efficiently,
-for example.
-
-.. XXX: Is this true ?
-
-The interface consists of two simple methods. Using the methods you can process
-form data in a generic way, without the need to worry whether only one or more
-values were posted under one name.
-
-In the previous section, you learned to write following code anytime you
-expected a user to post more than one value under one name::
-
-   item = form.getvalue("item")
-   if isinstance(item, list):
-       # The user is requesting more than one item.
-   else:
-       # The user is requesting only one item.
-
-This situation is common for example when a form contains a group of multiple
-checkboxes with the same name::
-
-   <input type="checkbox" name="item" value="1" />
-   <input type="checkbox" name="item" value="2" />
-
-In most situations, however, there's only one form control with a particular
-name in a form and then you expect and need only one value associated with this
-name.  So you write a script containing for example this code::
-
-   user = form.getvalue("user").upper()
-
-The problem with the code is that you should never expect that a client will
-provide valid input to your scripts.  For example, if a curious user appends
-another ``user=foo`` pair to the query string, then the script would crash,
-because in this situation the ``getvalue("user")`` method call returns a list
-instead of a string.  Calling the :meth:`~str.upper` method on a list is not valid
-(since lists do not have a method of this name) and results in an
-:exc:`AttributeError` exception.
-
-Therefore, the appropriate way to read form data values was to always use the
-code which checks whether the obtained value is a single value or a list of
-values.  That's annoying and leads to less readable scripts.
-
-A more convenient approach is to use the methods :meth:`~FieldStorage.getfirst`
-and :meth:`~FieldStorage.getlist` provided by this higher level interface.
-
-
-.. method:: FieldStorage.getfirst(name, default=None)
-
-   This method always returns only one value associated with form field *name*.
-   The method returns only the first value in case that more values were posted
-   under such name.  Please note that the order in which the values are received
-   may vary from browser to browser and should not be counted on. [#]_  If no such
-   form field or value exists then the method returns the value specified by the
-   optional parameter *default*.  This parameter defaults to ``None`` if not
-   specified.
-
-
-.. method:: FieldStorage.getlist(name)
-
-   This method always returns a list of values associated with form field *name*.
-   The method returns an empty list if no such form field or value exists for
-   *name*.  It returns a list consisting of one item if only one such value exists.
-
-Using these methods you can write nice compact code::
-
-   import cgi
-   form = cgi.FieldStorage()
-   user = form.getfirst("user", "").upper()    # This way it's safe.
-   for item in form.getlist("item"):
-       do_something(item)
-
-
-.. _functions-in-cgi-module:
-
-Functions
----------
-
-These are useful if you want more control, or if you want to employ some of the
-algorithms implemented in this module in other circumstances.
-
-
-.. function:: parse(fp=None, environ=os.environ, keep_blank_values=False, strict_parsing=False, separator="&")
-
-   Parse a query in the environment or from a file (the file defaults to
-   ``sys.stdin``).  The *keep_blank_values*, *strict_parsing* and *separator* parameters are
-   passed to :func:`urllib.parse.parse_qs` unchanged.
-
-   .. deprecated-removed:: 3.11 3.13
-      This function, like the rest of the :mod:`cgi` module, is deprecated.
-      It can be replaced by calling :func:`urllib.parse.parse_qs` directly
-      on the desired query string (except for ``multipart/form-data`` input,
-      which can be handled as described for :func:`parse_multipart`).
-
-
-.. function:: parse_multipart(fp, pdict, encoding="utf-8", errors="replace", separator="&")
-
-   Parse input of type :mimetype:`multipart/form-data` (for  file uploads).
-   Arguments are *fp* for the input file, *pdict* for a dictionary containing
-   other parameters in the :mailheader:`Content-Type` header, and *encoding*,
-   the request encoding.
-
-   Returns a dictionary just like :func:`urllib.parse.parse_qs`: keys are the
-   field names, each value is a list of values for that field. For non-file
-   fields, the value is a list of strings.
-
-   This is easy to use but not much good if you are expecting megabytes to be
-   uploaded --- in that case, use the :class:`FieldStorage` class instead
-   which is much more flexible.
-
-   .. versionchanged:: 3.7
-      Added the *encoding* and *errors* parameters.  For non-file fields, the
-      value is now a list of strings, not bytes.
-
-   .. versionchanged:: 3.10
-      Added the *separator* parameter.
-
-   .. deprecated-removed:: 3.11 3.13
-      This function, like the rest of the :mod:`cgi` module, is deprecated.
-      It can be replaced with the functionality in the :mod:`email` package
-      (e.g. :class:`email.message.EmailMessage`/:class:`email.message.Message`)
-      which implements the same MIME RFCs, or with the
-      `multipart <https://pypi.org/project/multipart/>`__ PyPI project.
-
-
-.. function:: parse_header(string)
-
-   Parse a MIME header (such as :mailheader:`Content-Type`) into a main value and a
-   dictionary of parameters.
-
-   .. deprecated-removed:: 3.11 3.13
-      This function, like the rest of the :mod:`cgi` module, is deprecated.
-      It can be replaced with the functionality in the :mod:`email` package,
-      which implements the same MIME RFCs.
-
-      For example, with :class:`email.message.EmailMessage`::
-
-          from email.message import EmailMessage
-          msg = EmailMessage()
-          msg['content-type'] = 'application/json; charset="utf8"'
-          main, params = msg.get_content_type(), msg['content-type'].params
-
-
-.. function:: test()
-
-   Robust test CGI script, usable as main program. Writes minimal HTTP headers and
-   formats all information provided to the script in HTML format.
-
-
-.. function:: print_environ()
-
-   Format the shell environment in HTML.
-
-
-.. function:: print_form(form)
-
-   Format a form in HTML.
-
-
-.. function:: print_directory()
-
-   Format the current directory in HTML.
-
-
-.. function:: print_environ_usage()
-
-   Print a list of useful (used by CGI) environment variables in HTML.
-
-
-.. _cgi-security:
-
-Caring about security
----------------------
-
-.. index:: pair: CGI; security
-
-There's one important rule: if you invoke an external program (via
-:func:`os.system`, :func:`os.popen` or other functions with similar
-functionality), make very sure you don't pass arbitrary strings received from
-the client to the shell.  This is a well-known security hole whereby clever
-hackers anywhere on the web can exploit a gullible CGI script to invoke
-arbitrary shell commands.  Even parts of the URL or field names cannot be
-trusted, since the request doesn't have to come from your form!
-
-To be on the safe side, if you must pass a string gotten from a form to a shell
-command, you should make sure the string contains only alphanumeric characters,
-dashes, underscores, and periods.
-
-
-Installing your CGI script on a Unix system
--------------------------------------------
-
-Read the documentation for your HTTP server and check with your local system
-administrator to find the directory where CGI scripts should be installed;
-usually this is in a directory :file:`cgi-bin` in the server tree.
-
-Make sure that your script is readable and executable by "others"; the Unix file
-mode should be ``0o755`` octal (use ``chmod 0755 filename``).  Make sure that the
-first line of the script contains ``#!`` starting in column 1 followed by the
-pathname of the Python interpreter, for instance::
-
-   #!/usr/local/bin/python
-
-Make sure the Python interpreter exists and is executable by "others".
-
-Make sure that any files your script needs to read or write are readable or
-writable, respectively, by "others" --- their mode should be ``0o644`` for
-readable and ``0o666`` for writable.  This is because, for security reasons, the
-HTTP server executes your script as user "nobody", without any special
-privileges.  It can only read (write, execute) files that everybody can read
-(write, execute).  The current directory at execution time is also different (it
-is usually the server's cgi-bin directory) and the set of environment variables
-is also different from what you get when you log in.  In particular, don't count
-on the shell's search path for executables (:envvar:`PATH`) or the Python module
-search path (:envvar:`PYTHONPATH`) to be set to anything interesting.
-
-If you need to load modules from a directory which is not on Python's default
-module search path, you can change the path in your script, before importing
-other modules.  For example::
-
-   import sys
-   sys.path.insert(0, "/usr/home/joe/lib/python")
-   sys.path.insert(0, "/usr/local/lib/python")
-
-(This way, the directory inserted last will be searched first!)
-
-Instructions for non-Unix systems will vary; check your HTTP server's
-documentation (it will usually have a section on CGI scripts).
-
-
-Testing your CGI script
------------------------
-
-Unfortunately, a CGI script will generally not run when you try it from the
-command line, and a script that works perfectly from the command line may fail
-mysteriously when run from the server.  There's one reason why you should still
-test your script from the command line: if it contains a syntax error, the
-Python interpreter won't execute it at all, and the HTTP server will most likely
-send a cryptic error to the client.
-
-Assuming your script has no syntax errors, yet it does not work, you have no
-choice but to read the next section.
-
-
-Debugging CGI scripts
----------------------
-
-.. index:: pair: CGI; debugging
-
-First of all, check for trivial installation errors --- reading the section
-above on installing your CGI script carefully can save you a lot of time.  If
-you wonder whether you have understood the installation procedure correctly, try
-installing a copy of this module file (:file:`cgi.py`) as a CGI script.  When
-invoked as a script, the file will dump its environment and the contents of the
-form in HTML format. Give it the right mode etc., and send it a request.  If it's
-installed in the standard :file:`cgi-bin` directory, it should be possible to
-send it a request by entering a URL into your browser of the form:
-
-.. code-block:: none
-
-   http://yourhostname/cgi-bin/cgi.py?name=Joe+Blow&addr=At+Home
-
-If this gives an error of type 404, the server cannot find the script -- perhaps
-you need to install it in a different directory.  If it gives another error,
-there's an installation problem that you should fix before trying to go any
-further.  If you get a nicely formatted listing of the environment and form
-content (in this example, the fields should be listed as "addr" with value "At
-Home" and "name" with value "Joe Blow"), the :file:`cgi.py` script has been
-installed correctly.  If you follow the same procedure for your own script, you
-should now be able to debug it.
-
-The next step could be to call the :mod:`cgi` module's :func:`test` function
-from your script: replace its main code with the single statement ::
-
-   cgi.test()
-
-This should produce the same results as those gotten from installing the
-:file:`cgi.py` file itself.
-
-When an ordinary Python script raises an unhandled exception (for whatever
-reason: of a typo in a module name, a file that can't be opened, etc.), the
-Python interpreter prints a nice traceback and exits.  While the Python
-interpreter will still do this when your CGI script raises an exception, most
-likely the traceback will end up in one of the HTTP server's log files, or be
-discarded altogether.
-
-Fortunately, once you have managed to get your script to execute *some* code,
-you can easily send tracebacks to the web browser using the :mod:`cgitb` module.
-If you haven't done so already, just add the lines::
-
-   import cgitb
-   cgitb.enable()
-
-to the top of your script.  Then try running it again; when a problem occurs,
-you should see a detailed report that will likely make apparent the cause of the
-crash.
-
-If you suspect that there may be a problem in importing the :mod:`cgitb` module,
-you can use an even more robust approach (which only uses built-in modules)::
-
-   import sys
-   sys.stderr = sys.stdout
-   print("Content-Type: text/plain")
-   print()
-   ...your code here...
-
-This relies on the Python interpreter to print the traceback.  The content type
-of the output is set to plain text, which disables all HTML processing.  If your
-script works, the raw HTML will be displayed by your client.  If it raises an
-exception, most likely after the first two lines have been printed, a traceback
-will be displayed. Because no HTML interpretation is going on, the traceback
-will be readable.
-
-
-Common problems and solutions
------------------------------
-
-* Most HTTP servers buffer the output from CGI scripts until the script is
-  completed.  This means that it is not possible to display a progress report on
-  the client's display while the script is running.
-
-* Check the installation instructions above.
-
-* Check the HTTP server's log files.  (``tail -f logfile`` in a separate window
-  may be useful!)
-
-* Always check a script for syntax errors first, by doing something like
-  ``python script.py``.
-
-* If your script does not have any syntax errors, try adding ``import cgitb;
-  cgitb.enable()`` to the top of the script.
-
-* When invoking external programs, make sure they can be found. Usually, this
-  means using absolute path names --- :envvar:`PATH` is usually not set to a very
-  useful value in a CGI script.
-
-* When reading or writing external files, make sure they can be read or written
-  by the userid under which your CGI script will be running: this is typically the
-  userid under which the web server is running, or some explicitly specified
-  userid for a web server's ``suexec`` feature.
-
-* Don't try to give a CGI script a set-uid mode.  This doesn't work on most
-  systems, and is a security liability as well.
-
-.. rubric:: Footnotes
-
-.. [#] Note that some recent versions of the HTML specification do state what
-   order the field values should be supplied in, but knowing whether a request
-   was received from a conforming browser, or even from a browser at all, is
-   tedious and error-prone.
diff --git a/Doc/library/cgitb.rst b/Doc/library/cgitb.rst
deleted file mode 100644
index 7f00bcd55c1e53..00000000000000
--- a/Doc/library/cgitb.rst
+++ /dev/null
@@ -1,89 +0,0 @@
-:mod:`cgitb` --- Traceback manager for CGI scripts
-==================================================
-
-.. module:: cgitb
-   :synopsis: Configurable traceback handler for CGI scripts.
-   :deprecated:
-
-.. moduleauthor:: Ka-Ping Yee <ping@lfw.org>
-.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
-
-**Source code:** :source:`Lib/cgitb.py`
-
-.. index::
-   single: CGI; exceptions
-   single: CGI; tracebacks
-   single: exceptions; in CGI scripts
-   single: tracebacks; in CGI scripts
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`cgitb` module is deprecated
-   (see :pep:`PEP 594 <594#cgitb>` for details).
-
---------------
-
-The :mod:`cgitb` module provides a special exception handler for Python scripts.
-(Its name is a bit misleading.  It was originally designed to display extensive
-traceback information in HTML for CGI scripts.  It was later generalized to also
-display this information in plain text.)  After this module is activated, if an
-uncaught exception occurs, a detailed, formatted report will be displayed.  The
-report includes a traceback showing excerpts of the source code for each level,
-as well as the values of the arguments and local variables to currently running
-functions, to help you debug the problem.  Optionally, you can save this
-information to a file instead of sending it to the browser.
-
-To enable this feature, simply add this to the top of your CGI script::
-
-   import cgitb
-   cgitb.enable()
-
-The options to the :func:`enable` function control whether the report is
-displayed in the browser and whether the report is logged to a file for later
-analysis.
-
-
-.. function:: enable(display=1, logdir=None, context=5, format="html")
-
-   .. index:: single: excepthook() (in module sys)
-
-   This function causes the :mod:`cgitb` module to take over the interpreter's
-   default handling for exceptions by setting the value of :attr:`sys.excepthook`.
-
-   The optional argument *display* defaults to ``1`` and can be set to ``0`` to
-   suppress sending the traceback to the browser. If the argument *logdir* is
-   present, the traceback reports are written to files.  The value of *logdir*
-   should be a directory where these files will be placed. The optional argument
-   *context* is the number of lines of context to display around the current line
-   of source code in the traceback; this defaults to ``5``. If the optional
-   argument *format* is ``"html"``, the output is formatted as HTML.  Any other
-   value forces plain text output.  The default value is ``"html"``.
-
-
-.. function:: text(info, context=5)
-
-   This function handles the exception described by *info* (a 3-tuple containing
-   the result of :func:`sys.exc_info`), formatting its traceback as text and
-   returning the result as a string. The optional argument *context* is the
-   number of lines of context to display around the current line of source code
-   in the traceback; this defaults to ``5``.
-
-
-.. function:: html(info, context=5)
-
-   This function handles the exception described by *info* (a 3-tuple containing
-   the result of :func:`sys.exc_info`), formatting its traceback as HTML and
-   returning the result as a string. The optional argument *context* is the
-   number of lines of context to display around the current line of source code
-   in the traceback; this defaults to ``5``.
-
-
-.. function:: handler(info=None)
-
-   This function handles an exception using the default settings (that is, show a
-   report in the browser, but don't log to a file). This can be used when you've
-   caught an exception and want to report it using :mod:`cgitb`.  The optional
-   *info* argument should be a 3-tuple containing an exception type, exception
-   value, and traceback object, exactly like the tuple returned by
-   :func:`sys.exc_info`.  If the *info* argument is not supplied, the current
-   exception is obtained from :func:`sys.exc_info`.
-
diff --git a/Doc/library/chunk.rst b/Doc/library/chunk.rst
deleted file mode 100644
index 3b88e55b147882..00000000000000
--- a/Doc/library/chunk.rst
+++ /dev/null
@@ -1,142 +0,0 @@
-:mod:`chunk` --- Read IFF chunked data
-======================================
-
-.. module:: chunk
-   :synopsis: Module to read IFF chunks.
-   :deprecated:
-
-.. moduleauthor:: Sjoerd Mullender <sjoerd@acm.org>
-.. sectionauthor:: Sjoerd Mullender <sjoerd@acm.org>
-
-**Source code:** :source:`Lib/chunk.py`
-
-.. index::
-   single: Audio Interchange File Format
-   single: AIFF
-   single: AIFF-C
-   single: Real Media File Format
-   single: RMFF
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`chunk` module is deprecated
-   (see :pep:`PEP 594 <594#chunk>` for details).
-
---------------
-
-This module provides an interface for reading files that use EA IFF 85 chunks.
-[#]_  This format is used in at least the Audio Interchange File Format
-(AIFF/AIFF-C) and the Real Media File Format (RMFF).  The WAVE audio file format
-is closely related and can also be read using this module.
-
-A chunk has the following structure:
-
-+---------+--------+-------------------------------+
-| Offset  | Length | Contents                      |
-+=========+========+===============================+
-| 0       | 4      | Chunk ID                      |
-+---------+--------+-------------------------------+
-| 4       | 4      | Size of chunk in big-endian   |
-|         |        | byte order, not including the |
-|         |        | header                        |
-+---------+--------+-------------------------------+
-| 8       | *n*    | Data bytes, where *n* is the  |
-|         |        | size given in the preceding   |
-|         |        | field                         |
-+---------+--------+-------------------------------+
-| 8 + *n* | 0 or 1 | Pad byte needed if *n* is odd |
-|         |        | and chunk alignment is used   |
-+---------+--------+-------------------------------+
-
-The ID is a 4-byte string which identifies the type of chunk.
-
-The size field (a 32-bit value, encoded using big-endian byte order) gives the
-size of the chunk data, not including the 8-byte header.
-
-Usually an IFF-type file consists of one or more chunks.  The proposed usage of
-the :class:`Chunk` class defined here is to instantiate an instance at the start
-of each chunk and read from the instance until it reaches the end, after which a
-new instance can be instantiated. At the end of the file, creating a new
-instance will fail with an :exc:`EOFError` exception.
-
-
-.. class:: Chunk(file, align=True, bigendian=True, inclheader=False)
-
-   Class which represents a chunk.  The *file* argument is expected to be a
-   file-like object.  An instance of this class is specifically allowed.  The
-   only method that is needed is :meth:`~io.IOBase.read`.  If the methods
-   :meth:`~io.IOBase.seek` and :meth:`~io.IOBase.tell` are present and don't
-   raise an exception, they are also used.
-   If these methods are present and raise an exception, they are expected to not
-   have altered the object.  If the optional argument *align* is true, chunks
-   are assumed to be aligned on 2-byte boundaries.  If *align* is false, no
-   alignment is assumed.  The default value is true.  If the optional argument
-   *bigendian* is false, the chunk size is assumed to be in little-endian order.
-   This is needed for WAVE audio files. The default value is true.  If the
-   optional argument *inclheader* is true, the size given in the chunk header
-   includes the size of the header.  The default value is false.
-
-   A :class:`Chunk` object supports the following methods:
-
-
-   .. method:: getname()
-
-      Returns the name (ID) of the chunk.  This is the first 4 bytes of the
-      chunk.
-
-
-   .. method:: getsize()
-
-      Returns the size of the chunk.
-
-
-   .. method:: close()
-
-      Close and skip to the end of the chunk.  This does not close the
-      underlying file.
-
-   The remaining methods will raise :exc:`OSError` if called after the
-   :meth:`close` method has been called.  Before Python 3.3, they used to
-   raise :exc:`IOError`, now an alias of :exc:`OSError`.
-
-
-   .. method:: isatty()
-
-      Returns ``False``.
-
-
-   .. method:: seek(pos, whence=0)
-
-      Set the chunk's current position.  The *whence* argument is optional and
-      defaults to ``0`` (absolute file positioning); other values are ``1``
-      (seek relative to the current position) and ``2`` (seek relative to the
-      file's end).  There is no return value. If the underlying file does not
-      allow seek, only forward seeks are allowed.
-
-
-   .. method:: tell()
-
-      Return the current position into the chunk.
-
-
-   .. method:: read(size=-1)
-
-      Read at most *size* bytes from the chunk (less if the read hits the end of
-      the chunk before obtaining *size* bytes).  If the *size* argument is
-      negative or omitted, read all data until the end of the chunk.  An empty
-      bytes object is returned when the end of the chunk is encountered
-      immediately.
-
-
-   .. method:: skip()
-
-      Skip to the end of the chunk.  All further calls to :meth:`read` for the
-      chunk will return ``b''``.  If you are not interested in the contents of
-      the chunk, this method should be called so that the file points to the
-      start of the next chunk.
-
-
-.. rubric:: Footnotes
-
-.. [#] "EA IFF 85" Standard for Interchange Format Files, Jerry Morrison, Electronic
-   Arts, January 1985.
-
diff --git a/Doc/library/cmath.rst b/Doc/library/cmath.rst
index b17d58e1cc0ce1..fdac51d9603ceb 100644
--- a/Doc/library/cmath.rst
+++ b/Doc/library/cmath.rst
@@ -9,7 +9,7 @@
 This module provides access to mathematical functions for complex numbers.  The
 functions in this module accept integers, floating-point numbers or complex
 numbers as arguments. They will also accept any Python object that has either a
-:meth:`__complex__` or a :meth:`__float__` method: these methods are used to
+:meth:`~object.__complex__` or a :meth:`~object.__float__` method: these methods are used to
 convert the object to a complex or floating-point number, respectively, and
 the function is then applied to the result of the conversion.
 
diff --git a/Doc/library/cmd.rst b/Doc/library/cmd.rst
index fd5df96dfd0b3d..1318ffe5a48d53 100644
--- a/Doc/library/cmd.rst
+++ b/Doc/library/cmd.rst
@@ -26,6 +26,13 @@ interface.
    key; it defaults to :kbd:`Tab`. If *completekey* is not :const:`None` and
    :mod:`readline` is available, command completion is done automatically.
 
+   The default, ``'tab'``, is treated specially, so that it refers to the
+   :kbd:`Tab` key on every :data:`readline.backend`.
+   Specifically, if :data:`readline.backend` is ``editline``,
+   ``Cmd`` will use ``'^I'`` instead of ``'tab'``.
+   Note that other values are not treated this way, and might only work
+   with a specific backend.
+
    The optional arguments *stdin* and *stdout* specify the  input and output file
    objects that the Cmd instance or subclass  instance will use for input and
    output. If not specified, they will default to :data:`sys.stdin` and
@@ -35,6 +42,9 @@ interface.
    :attr:`use_rawinput` attribute to ``False``, otherwise *stdin* will be
    ignored.
 
+   .. versionchanged:: 3.13
+      ``completekey='tab'`` is replaced by ``'^I'`` for ``editline``.
+
 
 .. _cmd-objects:
 
diff --git a/Doc/library/cmdline.rst b/Doc/library/cmdline.rst
new file mode 100644
index 00000000000000..b2379befeffcba
--- /dev/null
+++ b/Doc/library/cmdline.rst
@@ -0,0 +1,57 @@
+++++++++++++++++++++++++++++++++++++
+Modules command-line interface (CLI)
+++++++++++++++++++++++++++++++++++++
+
+The following modules have a command-line interface.
+
+* :ref:`ast <ast-cli>`
+* :ref:`asyncio <asyncio-cli>`
+* :mod:`base64`
+* :ref:`calendar <calendar-cli>`
+* :mod:`code`
+* :ref:`compileall <compileall-cli>`
+* :mod:`cProfile`: see :ref:`profile <profile-cli>`
+* :ref:`difflib <difflib-interface>`
+* :ref:`dis <dis-cli>`
+* :mod:`doctest`
+* :mod:`!encodings.rot_13`
+* :mod:`ensurepip`
+* :mod:`filecmp`
+* :mod:`fileinput`
+* :mod:`ftplib`
+* :ref:`gzip <gzip-cli>`
+* :ref:`http.server <http-server-cli>`
+* :mod:`!idlelib`
+* :ref:`inspect <inspect-module-cli>`
+* :ref:`json.tool <json-commandline>`
+* :mod:`mimetypes`
+* :mod:`pdb`
+* :mod:`pickle`
+* :ref:`pickletools <pickletools-cli>`
+* :mod:`platform`
+* :mod:`poplib`
+* :ref:`profile <profile-cli>`
+* :mod:`pstats`
+* :ref:`py_compile <py_compile-cli>`
+* :mod:`pyclbr`
+* :mod:`pydoc`
+* :mod:`quopri`
+* :mod:`runpy`
+* :ref:`site <site-commandline>`
+* :ref:`sqlite3 <sqlite3-cli>`
+* :ref:`sysconfig <sysconfig-cli>`
+* :mod:`tabnanny`
+* :ref:`tarfile <tarfile-commandline>`
+* :mod:`!this`
+* :ref:`timeit <timeit-command-line-interface>`
+* :ref:`tokenize <tokenize-cli>`
+* :ref:`trace <trace-cli>`
+* :mod:`turtledemo`
+* :ref:`unittest <unittest-command-line-interface>`
+* :ref:`uuid <uuid-cli>`
+* :mod:`venv`
+* :mod:`webbrowser`
+* :ref:`zipapp <zipapp-command-line-interface>`
+* :ref:`zipfile <zipfile-commandline>`
+
+See also the :ref:`Python command-line interface <using-on-general>`.
diff --git a/Doc/library/code.rst b/Doc/library/code.rst
index 538e5afc7822aa..091840781bd235 100644
--- a/Doc/library/code.rst
+++ b/Doc/library/code.rst
@@ -23,20 +23,25 @@ build applications which provide an interactive interpreter prompt.
    ``'__doc__'`` set to ``None``.
 
 
-.. class:: InteractiveConsole(locals=None, filename="<console>")
+.. class:: InteractiveConsole(locals=None, filename="<console>", local_exit=False)
 
    Closely emulate the behavior of the interactive Python interpreter. This class
    builds on :class:`InteractiveInterpreter` and adds prompting using the familiar
-   ``sys.ps1`` and ``sys.ps2``, and input buffering.
+   ``sys.ps1`` and ``sys.ps2``, and input buffering. If *local_exit* is True,
+   ``exit()`` and ``quit()`` in the console will not raise :exc:`SystemExit`, but
+   instead return to the calling code.
 
+   .. versionchanged:: 3.13
+      Added *local_exit* parameter.
 
-.. function:: interact(banner=None, readfunc=None, local=None, exitmsg=None)
+.. function:: interact(banner=None, readfunc=None, local=None, exitmsg=None, local_exit=False)
 
    Convenience function to run a read-eval-print loop.  This creates a new
    instance of :class:`InteractiveConsole` and sets *readfunc* to be used as
    the :meth:`InteractiveConsole.raw_input` method, if provided.  If *local* is
    provided, it is passed to the :class:`InteractiveConsole` constructor for
-   use as the default namespace for the interpreter loop.  The :meth:`interact`
+   use as the default namespace for the interpreter loop.  If *local_exit* is provided,
+   it is passed to the :class:`InteractiveConsole` constructor.  The :meth:`interact`
    method of the instance is then run with *banner* and *exitmsg* passed as the
    banner and exit message to use, if provided.  The console object is discarded
    after use.
@@ -44,6 +49,8 @@ build applications which provide an interactive interpreter prompt.
    .. versionchanged:: 3.6
       Added *exitmsg* parameter.
 
+   .. versionchanged:: 3.13
+      Added *local_exit* parameter.
 
 .. function:: compile_command(source, filename="<input>", symbol="single")
 
@@ -163,12 +170,12 @@ interpreter objects as well as the following additions.
 
    Push a line of source text to the interpreter. The line should not have a
    trailing newline; it may have internal newlines.  The line is appended to a
-   buffer and the interpreter's :meth:`runsource` method is called with the
+   buffer and the interpreter's :meth:`~InteractiveInterpreter.runsource` method is called with the
    concatenated contents of the buffer as source.  If this indicates that the
    command was executed or invalid, the buffer is reset; otherwise, the command is
    incomplete, and the buffer is left as it was after the line was appended.  The
    return value is ``True`` if more input is required, ``False`` if the line was
-   dealt with in some way (this is the same as :meth:`runsource`).
+   dealt with in some way (this is the same as :meth:`!runsource`).
 
 
 .. method:: InteractiveConsole.resetbuffer()
diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index 8225236350d22e..4617624686b1f3 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -345,9 +345,10 @@ The following error handlers can be used with all Python
 +-------------------------+-----------------------------------------------+
 | ``'backslashreplace'``  | Replace with backslashed escape sequences.    |
 |                         | On encoding, use hexadecimal form of Unicode  |
-|                         | code point with formats ``\xhh`` ``\uxxxx``   |
-|                         | ``\Uxxxxxxxx``. On decoding, use hexadecimal  |
-|                         | form of byte value with format ``\xhh``.      |
+|                         | code point with formats :samp:`\\x{hh}`       |
+|                         | :samp:`\\u{xxxx}` :samp:`\\U{xxxxxxxx}`.      |
+|                         | On decoding, use hexadecimal form of byte     |
+|                         | value with format :samp:`\\x{hh}`.            |
 |                         | Implemented in                                |
 |                         | :func:`backslashreplace_errors`.              |
 +-------------------------+-----------------------------------------------+
@@ -373,8 +374,9 @@ The following error handlers are only applicable to encoding (within
 +=========================+===============================================+
 | ``'xmlcharrefreplace'`` | Replace with XML/HTML numeric character       |
 |                         | reference, which is a decimal form of Unicode |
-|                         | code point with format ``&#num;`` Implemented |
-|                         | in :func:`xmlcharrefreplace_errors`.          |
+|                         | code point with format :samp:`&#{num};`.      |
+|                         | Implemented in                                |
+|                         | :func:`xmlcharrefreplace_errors`.             |
 +-------------------------+-----------------------------------------------+
 | ``'namereplace'``       | Replace with ``\N{...}`` escape sequences,    |
 |                         | what appears in the braces is the Name        |
@@ -478,8 +480,9 @@ functions:
 
    Malformed data is replaced by a backslashed escape sequence.
    On encoding, use the hexadecimal form of Unicode code point with formats
-   ``\xhh`` ``\uxxxx`` ``\Uxxxxxxxx``. On decoding, use the hexadecimal form of
-   byte value with format ``\xhh``.
+   :samp:`\\x{hh}` :samp:`\\u{xxxx}` :samp:`\\U{xxxxxxxx}`.
+   On decoding, use the hexadecimal form of
+   byte value with format :samp:`\\x{hh}`.
 
    .. versionchanged:: 3.5
       Works with decoding and translating.
@@ -492,7 +495,7 @@ functions:
 
    The unencodable character is replaced by an appropriate XML/HTML numeric
    character reference, which is a decimal form of Unicode code point with
-   format ``&#num;`` .
+   format :samp:`&#{num};` .
 
 
 .. function:: namereplace_errors(exception)
@@ -517,44 +520,46 @@ The base :class:`Codec` class defines these methods which also define the
 function interfaces of the stateless encoder and decoder:
 
 
-.. method:: Codec.encode(input, errors='strict')
+.. class:: Codec
+
+   .. method:: encode(input, errors='strict')
 
-   Encodes the object *input* and returns a tuple (output object, length consumed).
-   For instance, :term:`text encoding` converts
-   a string object to a bytes object using a particular
-   character set encoding (e.g., ``cp1252`` or ``iso-8859-1``).
+      Encodes the object *input* and returns a tuple (output object, length consumed).
+      For instance, :term:`text encoding` converts
+      a string object to a bytes object using a particular
+      character set encoding (e.g., ``cp1252`` or ``iso-8859-1``).
 
-   The *errors* argument defines the error handling to apply.
-   It defaults to ``'strict'`` handling.
+      The *errors* argument defines the error handling to apply.
+      It defaults to ``'strict'`` handling.
 
-   The method may not store state in the :class:`Codec` instance. Use
-   :class:`StreamWriter` for codecs which have to keep state in order to make
-   encoding efficient.
+      The method may not store state in the :class:`Codec` instance. Use
+      :class:`StreamWriter` for codecs which have to keep state in order to make
+      encoding efficient.
 
-   The encoder must be able to handle zero length input and return an empty object
-   of the output object type in this situation.
+      The encoder must be able to handle zero length input and return an empty object
+      of the output object type in this situation.
 
 
-.. method:: Codec.decode(input, errors='strict')
+   .. method:: decode(input, errors='strict')
 
-   Decodes the object *input* and returns a tuple (output object, length
-   consumed). For instance, for a :term:`text encoding`, decoding converts
-   a bytes object encoded using a particular
-   character set encoding to a string object.
+      Decodes the object *input* and returns a tuple (output object, length
+      consumed). For instance, for a :term:`text encoding`, decoding converts
+      a bytes object encoded using a particular
+      character set encoding to a string object.
 
-   For text encodings and bytes-to-bytes codecs,
-   *input* must be a bytes object or one which provides the read-only
-   buffer interface -- for example, buffer objects and memory mapped files.
+      For text encodings and bytes-to-bytes codecs,
+      *input* must be a bytes object or one which provides the read-only
+      buffer interface -- for example, buffer objects and memory mapped files.
 
-   The *errors* argument defines the error handling to apply.
-   It defaults to ``'strict'`` handling.
+      The *errors* argument defines the error handling to apply.
+      It defaults to ``'strict'`` handling.
 
-   The method may not store state in the :class:`Codec` instance. Use
-   :class:`StreamReader` for codecs which have to keep state in order to make
-   decoding efficient.
+      The method may not store state in the :class:`Codec` instance. Use
+      :class:`StreamReader` for codecs which have to keep state in order to make
+      decoding efficient.
 
-   The decoder must be able to handle zero length input and return an empty object
-   of the output object type in this situation.
+      The decoder must be able to handle zero length input and return an empty object
+      of the output object type in this situation.
 
 
 Incremental Encoding and Decoding
@@ -702,7 +707,7 @@ Stream Encoding and Decoding
 
 The :class:`StreamWriter` and :class:`StreamReader` classes provide generic
 working interfaces which can be used to implement new encoding submodules very
-easily. See :mod:`encodings.utf_8` for an example of how this is done.
+easily. See :mod:`!encodings.utf_8` for an example of how this is done.
 
 
 .. _stream-writer-objects:
@@ -892,9 +897,10 @@ The design is such that one can use the factory functions returned by the
 .. class:: StreamRecoder(stream, encode, decode, Reader, Writer, errors='strict')
 
    Creates a :class:`StreamRecoder` instance which implements a two-way conversion:
-   *encode* and *decode* work on the frontend — the data visible to
-   code calling :meth:`read` and :meth:`write`, while *Reader* and *Writer*
-   work on the backend — the data in *stream*.
+   *encode* and *decode* work on the frontend — the data visible to
+   code calling :meth:`~StreamReader.read` and :meth:`~StreamWriter.write`,
+   while *Reader* and *Writer*
+   work on the backend — the data in *stream*.
 
    You can use these objects to do transparent transcodings, e.g., from Latin-1
    to UTF-8 and back.
@@ -1346,9 +1352,10 @@ encodings.
 |                    |         | supported.                |
 +--------------------+---------+---------------------------+
 | raw_unicode_escape |         | Latin-1 encoding with     |
-|                    |         | ``\uXXXX`` and            |
-|                    |         | ``\UXXXXXXXX`` for other  |
-|                    |         | code points. Existing     |
+|                    |         | :samp:`\\u{XXXX}` and     |
+|                    |         | :samp:`\\U{XXXXXXXX}`     |
+|                    |         | for other code points.    |
+|                    |         | Existing                  |
 |                    |         | backslashes are not       |
 |                    |         | escaped in any way.       |
 |                    |         | It is used in the Python  |
@@ -1413,8 +1420,8 @@ to :class:`bytes` mappings. They are not supported by :meth:`bytes.decode`
 |                      | quotedprintable, | quoted printable.            | ``quotetabs=True`` /         |
 |                      | quoted_printable |                              | :meth:`quopri.decode`        |
 +----------------------+------------------+------------------------------+------------------------------+
-| uu_codec             | uu               | Convert the operand using    | :meth:`uu.encode` /          |
-|                      |                  | uuencode.                    | :meth:`uu.decode`            |
+| uu_codec             | uu               | Convert the operand using    |                              |
+|                      |                  | uuencode.                    |                              |
 +----------------------+------------------+------------------------------+------------------------------+
 | zlib_codec           | zip, zlib        | Compress the operand using   | :meth:`zlib.compress` /      |
 |                      |                  | gzip.                        | :meth:`zlib.decompress`      |
diff --git a/Doc/library/codeop.rst b/Doc/library/codeop.rst
index 90df499f8207b7..55606e1c5f09ac 100644
--- a/Doc/library/codeop.rst
+++ b/Doc/library/codeop.rst
@@ -58,7 +58,7 @@ To do just the former:
 
 .. class:: Compile()
 
-   Instances of this class have :meth:`__call__` methods identical in signature to
+   Instances of this class have :meth:`~object.__call__` methods identical in signature to
    the built-in function :func:`compile`, but with the difference that if the
    instance compiles program text containing a :mod:`__future__` statement, the
    instance 'remembers' and compiles all subsequent program texts with the
@@ -67,7 +67,7 @@ To do just the former:
 
 .. class:: CommandCompiler()
 
-   Instances of this class have :meth:`__call__` methods identical in signature to
+   Instances of this class have :meth:`~object.__call__` methods identical in signature to
    :func:`compile_command`; the difference is that if the instance compiles program
    text containing a :mod:`__future__` statement, the instance 'remembers' and
    compiles all subsequent program texts with the statement in force.
diff --git a/Doc/library/collections.abc.rst b/Doc/library/collections.abc.rst
index 43a3286ba832cf..edc078953290d7 100644
--- a/Doc/library/collections.abc.rst
+++ b/Doc/library/collections.abc.rst
@@ -192,7 +192,7 @@ ABC                            Inherits from          Abstract Methods        Mi
 .. [2] Checking ``isinstance(obj, Iterable)`` detects classes that are
    registered as :class:`Iterable` or that have an :meth:`__iter__`
    method, but it does not detect classes that iterate with the
-   :meth:`__getitem__` method.  The only reliable way to determine
+   :meth:`~object.__getitem__` method.  The only reliable way to determine
    whether an object is :term:`iterable` is to call ``iter(obj)``.
 
 
@@ -222,7 +222,7 @@ Collections Abstract Base Classes -- Detailed Descriptions
 
    Checking ``isinstance(obj, Iterable)`` detects classes that are registered
    as :class:`Iterable` or that have an :meth:`__iter__` method, but it does
-   not detect classes that iterate with the :meth:`__getitem__` method.
+   not detect classes that iterate with the :meth:`~object.__getitem__` method.
    The only reliable way to determine whether an object is :term:`iterable`
    is to call ``iter(obj)``.
 
@@ -262,8 +262,8 @@ Collections Abstract Base Classes -- Detailed Descriptions
 
    Implementation note: Some of the mixin methods, such as
    :meth:`__iter__`, :meth:`__reversed__` and :meth:`index`, make
-   repeated calls to the underlying :meth:`__getitem__` method.
-   Consequently, if :meth:`__getitem__` is implemented with constant
+   repeated calls to the underlying :meth:`~object.__getitem__` method.
+   Consequently, if :meth:`~object.__getitem__` is implemented with constant
    access speed, the mixin methods will have linear performance;
    however, if the underlying method is linear (as it would be with a
    linked list), the mixins will have quadratic performance and will
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index bb46782c06e1c8..233b2c6a771f4a 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -120,26 +120,26 @@ The class can be used to simulate nested scopes and is useful in templating.
 
 .. seealso::
 
-    * The `MultiContext class
-      <https://github.com/enthought/codetools/blob/4.0.0/codetools/contexts/multi_context.py>`_
-      in the Enthought `CodeTools package
-      <https://github.com/enthought/codetools>`_ has options to support
-      writing to any mapping in the chain.
+   * The `MultiContext class
+     <https://github.com/enthought/codetools/blob/4.0.0/codetools/contexts/multi_context.py>`_
+     in the Enthought `CodeTools package
+     <https://github.com/enthought/codetools>`_ has options to support
+     writing to any mapping in the chain.
 
-    * Django's `Context class
-      <https://github.com/django/django/blob/main/django/template/context.py>`_
-      for templating is a read-only chain of mappings.  It also features
-      pushing and popping of contexts similar to the
-      :meth:`~collections.ChainMap.new_child` method and the
-      :attr:`~collections.ChainMap.parents` property.
+   * Django's `Context class
+     <https://github.com/django/django/blob/main/django/template/context.py>`_
+     for templating is a read-only chain of mappings.  It also features
+     pushing and popping of contexts similar to the
+     :meth:`~collections.ChainMap.new_child` method and the
+     :attr:`~collections.ChainMap.parents` property.
 
-    * The `Nested Contexts recipe
-      <https://code.activestate.com/recipes/577434/>`_ has options to control
-      whether writes and other mutations apply only to the first mapping or to
-      any mapping in the chain.
+   * The `Nested Contexts recipe
+     <https://code.activestate.com/recipes/577434/>`_ has options to control
+     whether writes and other mutations apply only to the first mapping or to
+     any mapping in the chain.
 
-    * A `greatly simplified read-only version of Chainmap
-      <https://code.activestate.com/recipes/305268/>`_.
+   * A `greatly simplified read-only version of Chainmap
+     <https://code.activestate.com/recipes/305268/>`_.
 
 
 :class:`ChainMap` Examples and Recipes
@@ -358,7 +358,7 @@ Common patterns for working with :class:`Counter` objects::
     list(c)                         # list unique elements
     set(c)                          # convert to a set
     dict(c)                         # convert to a regular dictionary
-    c.items()                       # convert to a list of (elem, cnt) pairs
+    c.items()                       # access the (elem, cnt) pairs
     Counter(dict(list_of_pairs))    # convert from a list of (elem, cnt) pairs
     c.most_common()[:-n-1:-1]       # n least common elements
     +c                              # remove zero and negative counts
@@ -429,22 +429,22 @@ or subtracting from an empty counter.
 
 .. seealso::
 
-    * `Bag class <https://www.gnu.org/software/smalltalk/manual-base/html_node/Bag.html>`_
-      in Smalltalk.
+   * `Bag class <https://www.gnu.org/software/smalltalk/manual-base/html_node/Bag.html>`_
+     in Smalltalk.
 
-    * Wikipedia entry for `Multisets <https://en.wikipedia.org/wiki/Multiset>`_.
+   * Wikipedia entry for `Multisets <https://en.wikipedia.org/wiki/Multiset>`_.
 
-    * `C++ multisets <http://www.java2s.com/Tutorial/Cpp/0380__set-multiset/Catalog0380__set-multiset.htm>`_
-      tutorial with examples.
+   * `C++ multisets <http://www.java2s.com/Tutorial/Cpp/0380__set-multiset/Catalog0380__set-multiset.htm>`_
+     tutorial with examples.
 
-    * For mathematical operations on multisets and their use cases, see
-      *Knuth, Donald. The Art of Computer Programming Volume II,
-      Section 4.6.3, Exercise 19*.
+   * For mathematical operations on multisets and their use cases, see
+     *Knuth, Donald. The Art of Computer Programming Volume II,
+     Section 4.6.3, Exercise 19*.
 
-    * To enumerate all distinct multisets of a given size over a given set of
-      elements, see :func:`itertools.combinations_with_replacement`::
+   * To enumerate all distinct multisets of a given size over a given set of
+     elements, see :func:`itertools.combinations_with_replacement`::
 
-          map(Counter, combinations_with_replacement('ABC', 2)) # --> AA AB AC BB BC CC
+        map(Counter, combinations_with_replacement('ABC', 2)) # --> AA AB AC BB BC CC
 
 
 :class:`deque` objects
@@ -743,12 +743,12 @@ stack manipulations such as ``dup``, ``drop``, ``swap``, ``over``, ``pick``,
         If calling :attr:`default_factory` raises an exception this exception is
         propagated unchanged.
 
-        This method is called by the :meth:`__getitem__` method of the
+        This method is called by the :meth:`~object.__getitem__` method of the
         :class:`dict` class when the requested key is not found; whatever it
-        returns or raises is then returned or raised by :meth:`__getitem__`.
+        returns or raises is then returned or raised by :meth:`~object.__getitem__`.
 
         Note that :meth:`__missing__` is *not* called for any operations besides
-        :meth:`__getitem__`. This means that :meth:`get` will, like normal
+        :meth:`~object.__getitem__`. This means that :meth:`get` will, like normal
         dictionaries, return ``None`` as a default rather than using
         :attr:`default_factory`.
 
@@ -979,6 +979,12 @@ field names, the method and attribute names start with an underscore.
         >>> for partnum, record in inventory.items():
         ...     inventory[partnum] = record._replace(price=newprices[partnum], timestamp=time.now())
 
+    Named tuples are also supported by generic function :func:`copy.replace`.
+
+    .. versionchanged:: 3.13
+       Raise :exc:`TypeError` instead of :exc:`ValueError` for invalid
+       keyword arguments.
+
 .. attribute:: somenamedtuple._fields
 
     Tuple of strings listing the field names.  Useful for introspection
@@ -1060,20 +1066,20 @@ fields:
 
 .. seealso::
 
-    * See :class:`typing.NamedTuple` for a way to add type hints for named
-      tuples.  It also provides an elegant notation using the :keyword:`class`
-      keyword::
+   * See :class:`typing.NamedTuple` for a way to add type hints for named
+     tuples.  It also provides an elegant notation using the :keyword:`class`
+     keyword::
 
-          class Component(NamedTuple):
-              part_number: int
-              weight: float
-              description: Optional[str] = None
+         class Component(NamedTuple):
+             part_number: int
+             weight: float
+             description: Optional[str] = None
 
-    * See :meth:`types.SimpleNamespace` for a mutable namespace based on an
-      underlying dictionary instead of a tuple.
+   * See :meth:`types.SimpleNamespace` for a mutable namespace based on an
+     underlying dictionary instead of a tuple.
 
-    * The :mod:`dataclasses` module provides a decorator and functions for
-      automatically adding generated special methods to user-defined classes.
+   * The :mod:`dataclasses` module provides a decorator and functions for
+     automatically adding generated special methods to user-defined classes.
 
 
 :class:`OrderedDict` objects
@@ -1224,7 +1230,7 @@ variants of :func:`functools.lru_cache`:
             result = self.func(*args)
             self.cache[args] = time(), result
             if len(self.cache) > self.maxsize:
-                self.cache.popitem(0)
+                self.cache.popitem(last=False)
             return result
 
 
@@ -1256,12 +1262,12 @@ variants of :func:`functools.lru_cache`:
             if self.requests[args] <= self.cache_after:
                 self.requests.move_to_end(args)
                 if len(self.requests) > self.maxrequests:
-                    self.requests.popitem(0)
+                    self.requests.popitem(last=False)
             else:
                 self.requests.pop(args, None)
                 self.cache[args] = result
                 if len(self.cache) > self.maxsize:
-                    self.cache.popitem(0)
+                    self.cache.popitem(last=False)
             return result
 
 .. doctest::
diff --git a/Doc/library/compileall.rst b/Doc/library/compileall.rst
index 180f5b81c2b615..df1eefab839cc1 100644
--- a/Doc/library/compileall.rst
+++ b/Doc/library/compileall.rst
@@ -16,6 +16,8 @@ have write permission to the library directories.
 
 .. include:: ../includes/wasm-notavail.rst
 
+.. _compileall-cli:
+
 Command-line use
 ----------------
 
@@ -24,28 +26,28 @@ compile Python sources.
 
 .. program:: compileall
 
-.. cmdoption:: directory ...
-               file ...
+.. option:: directory ...
+            file ...
 
    Positional arguments are files to compile or directories that contain
    source files, traversed recursively.  If no argument is given, behave as if
-   the command line was ``-l <directories from sys.path>``.
+   the command line was :samp:`-l {<directories from sys.path>}`.
 
-.. cmdoption:: -l
+.. option:: -l
 
    Do not recurse into subdirectories, only compile source code files directly
    contained in the named or implied directories.
 
-.. cmdoption:: -f
+.. option:: -f
 
    Force rebuild even if timestamps are up-to-date.
 
-.. cmdoption:: -q
+.. option:: -q
 
    Do not print the list of files compiled. If passed once, error messages will
    still be printed. If passed twice (``-qq``), all output is suppressed.
 
-.. cmdoption:: -d destdir
+.. option:: -d destdir
 
    Directory prepended to the path to each file being compiled.  This will
    appear in compilation time tracebacks, and is also compiled in to the
@@ -53,45 +55,45 @@ compile Python sources.
    cases where the source file does not exist at the time the byte-code file is
    executed.
 
-.. cmdoption:: -s strip_prefix
-.. cmdoption:: -p prepend_prefix
+.. option:: -s strip_prefix
+.. option:: -p prepend_prefix
 
    Remove (``-s``) or append (``-p``) the given prefix of paths
    recorded in the ``.pyc`` files.
    Cannot be combined with ``-d``.
 
-.. cmdoption:: -x regex
+.. option:: -x regex
 
    regex is used to search the full path to each file considered for
    compilation, and if the regex produces a match, the file is skipped.
 
-.. cmdoption:: -i list
+.. option:: -i list
 
    Read the file ``list`` and add each line that it contains to the list of
    files and directories to compile.  If ``list`` is ``-``, read lines from
    ``stdin``.
 
-.. cmdoption:: -b
+.. option:: -b
 
    Write the byte-code files to their legacy locations and names, which may
    overwrite byte-code files created by another version of Python.  The default
    is to write files to their :pep:`3147` locations and names, which allows
    byte-code files from multiple versions of Python to coexist.
 
-.. cmdoption:: -r
+.. option:: -r
 
    Control the maximum recursion level for subdirectories.
    If this is given, then ``-l`` option will not be taken into account.
    :program:`python -m compileall <directory> -r 0` is equivalent to
    :program:`python -m compileall <directory> -l`.
 
-.. cmdoption:: -j N
+.. option:: -j N
 
    Use *N* workers to compile the files within the given directory.
-   If ``0`` is used, then the result of :func:`os.cpu_count()`
+   If ``0`` is used, then the result of :func:`os.process_cpu_count()`
    will be used.
 
-.. cmdoption:: --invalidation-mode [timestamp|checked-hash|unchecked-hash]
+.. option:: --invalidation-mode [timestamp|checked-hash|unchecked-hash]
 
    Control how the generated byte-code files are invalidated at runtime.
    The ``timestamp`` value, means that ``.pyc`` files with the source timestamp
@@ -104,17 +106,17 @@ compile Python sources.
    variable is not set, and ``checked-hash`` if the ``SOURCE_DATE_EPOCH``
    environment variable is set.
 
-.. cmdoption:: -o level
+.. option:: -o level
 
    Compile with the given optimization level. May be used multiple times
    to compile for multiple levels at a time (for example,
    ``compileall -o 1 -o 2``).
 
-.. cmdoption:: -e dir
+.. option:: -e dir
 
    Ignore symlinks pointing outside the given directory.
 
-.. cmdoption:: --hardlink-dupes
+.. option:: --hardlink-dupes
 
    If two ``.pyc`` files with different optimization level have
    the same content, use hard links to consolidate duplicate files.
@@ -141,9 +143,9 @@ There is no command-line option to control the optimization level used by the
 :func:`compile` function, because the Python interpreter itself already
 provides the option: :program:`python -O -m compileall`.
 
-Similarly, the :func:`compile` function respects the :attr:`sys.pycache_prefix`
+Similarly, the :func:`compile` function respects the :data:`sys.pycache_prefix`
 setting. The generated bytecode cache will only be useful if :func:`compile` is
-run with the same :attr:`sys.pycache_prefix` (if any) that will be used at
+run with the same :data:`sys.pycache_prefix` (if any) that will be used at
 runtime.
 
 Public functions
diff --git a/Doc/library/concurrent.futures.rst b/Doc/library/concurrent.futures.rst
index 09c9fc4e6e227a..deefb8606ead84 100644
--- a/Doc/library/concurrent.futures.rst
+++ b/Doc/library/concurrent.futures.rst
@@ -29,83 +29,83 @@ Executor Objects
    An abstract class that provides methods to execute calls asynchronously.  It
    should not be used directly, but through its concrete subclasses.
 
-    .. method:: submit(fn, /, *args, **kwargs)
+   .. method:: submit(fn, /, *args, **kwargs)
 
-       Schedules the callable, *fn*, to be executed as ``fn(*args, **kwargs)``
-       and returns a :class:`Future` object representing the execution of the
-       callable. ::
+      Schedules the callable, *fn*, to be executed as ``fn(*args, **kwargs)``
+      and returns a :class:`Future` object representing the execution of the
+      callable. ::
 
-          with ThreadPoolExecutor(max_workers=1) as executor:
-              future = executor.submit(pow, 323, 1235)
-              print(future.result())
+         with ThreadPoolExecutor(max_workers=1) as executor:
+             future = executor.submit(pow, 323, 1235)
+             print(future.result())
 
-    .. method:: map(func, *iterables, timeout=None, chunksize=1)
+   .. method:: map(func, *iterables, timeout=None, chunksize=1)
 
-       Similar to :func:`map(func, *iterables) <map>` except:
+      Similar to :func:`map(func, *iterables) <map>` except:
 
-       * the *iterables* are collected immediately rather than lazily;
+      * the *iterables* are collected immediately rather than lazily;
 
-       * *func* is executed asynchronously and several calls to
-         *func* may be made concurrently.
+      * *func* is executed asynchronously and several calls to
+        *func* may be made concurrently.
 
-       The returned iterator raises a :exc:`TimeoutError`
-       if :meth:`~iterator.__next__` is called and the result isn't available
-       after *timeout* seconds from the original call to :meth:`Executor.map`.
-       *timeout* can be an int or a float.  If *timeout* is not specified or
-       ``None``, there is no limit to the wait time.
+      The returned iterator raises a :exc:`TimeoutError`
+      if :meth:`~iterator.__next__` is called and the result isn't available
+      after *timeout* seconds from the original call to :meth:`Executor.map`.
+      *timeout* can be an int or a float.  If *timeout* is not specified or
+      ``None``, there is no limit to the wait time.
 
-       If a *func* call raises an exception, then that exception will be
-       raised when its value is retrieved from the iterator.
+      If a *func* call raises an exception, then that exception will be
+      raised when its value is retrieved from the iterator.
 
-       When using :class:`ProcessPoolExecutor`, this method chops *iterables*
-       into a number of chunks which it submits to the pool as separate
-       tasks.  The (approximate) size of these chunks can be specified by
-       setting *chunksize* to a positive integer.  For very long iterables,
-       using a large value for *chunksize* can significantly improve
-       performance compared to the default size of 1.  With
-       :class:`ThreadPoolExecutor`, *chunksize* has no effect.
+      When using :class:`ProcessPoolExecutor`, this method chops *iterables*
+      into a number of chunks which it submits to the pool as separate
+      tasks.  The (approximate) size of these chunks can be specified by
+      setting *chunksize* to a positive integer.  For very long iterables,
+      using a large value for *chunksize* can significantly improve
+      performance compared to the default size of 1.  With
+      :class:`ThreadPoolExecutor`, *chunksize* has no effect.
 
-       .. versionchanged:: 3.5
-          Added the *chunksize* argument.
+      .. versionchanged:: 3.5
+         Added the *chunksize* argument.
 
-    .. method:: shutdown(wait=True, *, cancel_futures=False)
+   .. method:: shutdown(wait=True, *, cancel_futures=False)
 
-       Signal the executor that it should free any resources that it is using
-       when the currently pending futures are done executing.  Calls to
-       :meth:`Executor.submit` and :meth:`Executor.map` made after shutdown will
-       raise :exc:`RuntimeError`.
+      Signal the executor that it should free any resources that it is using
+      when the currently pending futures are done executing.  Calls to
+      :meth:`Executor.submit` and :meth:`Executor.map` made after shutdown will
+      raise :exc:`RuntimeError`.
 
-       If *wait* is ``True`` then this method will not return until all the
-       pending futures are done executing and the resources associated with the
-       executor have been freed.  If *wait* is ``False`` then this method will
-       return immediately and the resources associated with the executor will be
-       freed when all pending futures are done executing.  Regardless of the
-       value of *wait*, the entire Python program will not exit until all
-       pending futures are done executing.
+      If *wait* is ``True`` then this method will not return until all the
+      pending futures are done executing and the resources associated with the
+      executor have been freed.  If *wait* is ``False`` then this method will
+      return immediately and the resources associated with the executor will be
+      freed when all pending futures are done executing.  Regardless of the
+      value of *wait*, the entire Python program will not exit until all
+      pending futures are done executing.
 
-       If *cancel_futures* is ``True``, this method will cancel all pending
-       futures that the executor has not started running. Any futures that
-       are completed or running won't be cancelled, regardless of the value
-       of *cancel_futures*.
+      If *cancel_futures* is ``True``, this method will cancel all pending
+      futures that the executor has not started running. Any futures that
+      are completed or running won't be cancelled, regardless of the value
+      of *cancel_futures*.
 
-       If both *cancel_futures* and *wait* are ``True``, all futures that the
-       executor has started running will be completed prior to this method
-       returning. The remaining futures are cancelled.
+      If both *cancel_futures* and *wait* are ``True``, all futures that the
+      executor has started running will be completed prior to this method
+      returning. The remaining futures are cancelled.
 
-       You can avoid having to call this method explicitly if you use the
-       :keyword:`with` statement, which will shutdown the :class:`Executor`
-       (waiting as if :meth:`Executor.shutdown` were called with *wait* set to
-       ``True``)::
+      You can avoid having to call this method explicitly if you use the
+      :keyword:`with` statement, which will shutdown the :class:`Executor`
+      (waiting as if :meth:`Executor.shutdown` were called with *wait* set to
+      ``True``)::
 
-          import shutil
-          with ThreadPoolExecutor(max_workers=4) as e:
-              e.submit(shutil.copy, 'src1.txt', 'dest1.txt')
-              e.submit(shutil.copy, 'src2.txt', 'dest2.txt')
-              e.submit(shutil.copy, 'src3.txt', 'dest3.txt')
-              e.submit(shutil.copy, 'src4.txt', 'dest4.txt')
+         import shutil
+         with ThreadPoolExecutor(max_workers=4) as e:
+             e.submit(shutil.copy, 'src1.txt', 'dest1.txt')
+             e.submit(shutil.copy, 'src2.txt', 'dest2.txt')
+             e.submit(shutil.copy, 'src3.txt', 'dest3.txt')
+             e.submit(shutil.copy, 'src4.txt', 'dest4.txt')
 
-       .. versionchanged:: 3.9
-          Added *cancel_futures*.
+      .. versionchanged:: 3.9
+         Added *cancel_futures*.
 
 
 ThreadPoolExecutor
@@ -188,6 +188,10 @@ And::
       ThreadPoolExecutor now reuses idle worker threads before starting
       *max_workers* worker threads too.
 
+   .. versionchanged:: 3.13
+      Default value of *max_workers* is changed to
+      ``min(32, (os.process_cpu_count() or 1) + 4)``.
+
 
 .. _threadpoolexecutor-example:
 
@@ -243,7 +247,7 @@ to a :class:`ProcessPoolExecutor` will result in deadlock.
 
    An :class:`Executor` subclass that executes calls asynchronously using a pool
    of at most *max_workers* processes.  If *max_workers* is ``None`` or not
-   given, it will default to the number of processors on the machine.
+   given, it will default to :func:`os.process_cpu_count`.
    If *max_workers* is less than or equal to ``0``, then a :exc:`ValueError`
    will be raised.
    On Windows, *max_workers* must be less than or equal to ``61``. If it is not
@@ -293,6 +297,18 @@ to a :class:`ProcessPoolExecutor` will result in deadlock.
       The *max_tasks_per_child* argument was added to allow users to
       control the lifetime of workers in the pool.
 
+   .. versionchanged:: 3.12
+      On POSIX systems, if your application has multiple threads and the
+      :mod:`multiprocessing` context uses the ``"fork"`` start method:
+      The :func:`os.fork` function called internally to spawn workers may raise a
+      :exc:`DeprecationWarning`. Pass a *mp_context* configured to use a
+      different start method. See the :func:`os.fork` documentation for
+      further explanation.
+
+   .. versionchanged:: 3.13
+      *max_workers* uses :func:`os.process_cpu_count` by default, instead of
+      :func:`os.cpu_count`.
+
 .. _processpoolexecutor-example:
 
 ProcessPoolExecutor Example
@@ -345,117 +361,117 @@ The :class:`Future` class encapsulates the asynchronous execution of a callable.
    instances are created by :meth:`Executor.submit` and should not be created
    directly except for testing.
 
-    .. method:: cancel()
+   .. method:: cancel()
 
-       Attempt to cancel the call.  If the call is currently being executed or
-       finished running and cannot be cancelled then the method will return
-       ``False``, otherwise the call will be cancelled and the method will
-       return ``True``.
+      Attempt to cancel the call.  If the call is currently being executed or
+      finished running and cannot be cancelled then the method will return
+      ``False``, otherwise the call will be cancelled and the method will
+      return ``True``.
 
-    .. method:: cancelled()
+   .. method:: cancelled()
 
-       Return ``True`` if the call was successfully cancelled.
+      Return ``True`` if the call was successfully cancelled.
 
-    .. method:: running()
+   .. method:: running()
 
-       Return ``True`` if the call is currently being executed and cannot be
-       cancelled.
+      Return ``True`` if the call is currently being executed and cannot be
+      cancelled.
 
-    .. method:: done()
+   .. method:: done()
 
-       Return ``True`` if the call was successfully cancelled or finished
-       running.
+      Return ``True`` if the call was successfully cancelled or finished
+      running.
 
-    .. method:: result(timeout=None)
+   .. method:: result(timeout=None)
 
-       Return the value returned by the call. If the call hasn't yet completed
-       then this method will wait up to *timeout* seconds.  If the call hasn't
-       completed in *timeout* seconds, then a
-       :exc:`TimeoutError` will be raised. *timeout* can be
-       an int or float.  If *timeout* is not specified or ``None``, there is no
-       limit to the wait time.
+      Return the value returned by the call. If the call hasn't yet completed
+      then this method will wait up to *timeout* seconds.  If the call hasn't
+      completed in *timeout* seconds, then a
+      :exc:`TimeoutError` will be raised. *timeout* can be
+      an int or float.  If *timeout* is not specified or ``None``, there is no
+      limit to the wait time.
 
-       If the future is cancelled before completing then :exc:`.CancelledError`
-       will be raised.
+      If the future is cancelled before completing then :exc:`.CancelledError`
+      will be raised.
 
-       If the call raised an exception, this method will raise the same exception.
+      If the call raised an exception, this method will raise the same exception.
 
-    .. method:: exception(timeout=None)
+   .. method:: exception(timeout=None)
 
-       Return the exception raised by the call.  If the call hasn't yet
-       completed then this method will wait up to *timeout* seconds.  If the
-       call hasn't completed in *timeout* seconds, then a
-       :exc:`TimeoutError` will be raised.  *timeout* can be
-       an int or float.  If *timeout* is not specified or ``None``, there is no
-       limit to the wait time.
+      Return the exception raised by the call.  If the call hasn't yet
+      completed then this method will wait up to *timeout* seconds.  If the
+      call hasn't completed in *timeout* seconds, then a
+      :exc:`TimeoutError` will be raised.  *timeout* can be
+      an int or float.  If *timeout* is not specified or ``None``, there is no
+      limit to the wait time.
 
-       If the future is cancelled before completing then :exc:`.CancelledError`
-       will be raised.
+      If the future is cancelled before completing then :exc:`.CancelledError`
+      will be raised.
 
-       If the call completed without raising, ``None`` is returned.
+      If the call completed without raising, ``None`` is returned.
 
-    .. method:: add_done_callback(fn)
+   .. method:: add_done_callback(fn)
 
-       Attaches the callable *fn* to the future.  *fn* will be called, with the
-       future as its only argument, when the future is cancelled or finishes
-       running.
+      Attaches the callable *fn* to the future.  *fn* will be called, with the
+      future as its only argument, when the future is cancelled or finishes
+      running.
 
-       Added callables are called in the order that they were added and are
-       always called in a thread belonging to the process that added them.  If
-       the callable raises an :exc:`Exception` subclass, it will be logged and
-       ignored.  If the callable raises a :exc:`BaseException` subclass, the
-       behavior is undefined.
+      Added callables are called in the order that they were added and are
+      always called in a thread belonging to the process that added them.  If
+      the callable raises an :exc:`Exception` subclass, it will be logged and
+      ignored.  If the callable raises a :exc:`BaseException` subclass, the
+      behavior is undefined.
 
-       If the future has already completed or been cancelled, *fn* will be
-       called immediately.
+      If the future has already completed or been cancelled, *fn* will be
+      called immediately.
 
    The following :class:`Future` methods are meant for use in unit tests and
    :class:`Executor` implementations.
 
-    .. method:: set_running_or_notify_cancel()
+   .. method:: set_running_or_notify_cancel()
 
-       This method should only be called by :class:`Executor` implementations
-       before executing the work associated with the :class:`Future` and by unit
-       tests.
+      This method should only be called by :class:`Executor` implementations
+      before executing the work associated with the :class:`Future` and by unit
+      tests.
 
-       If the method returns ``False`` then the :class:`Future` was cancelled,
-       i.e. :meth:`Future.cancel` was called and returned ``True``.  Any threads
-       waiting on the :class:`Future` completing (i.e. through
-       :func:`as_completed` or :func:`wait`) will be woken up.
+      If the method returns ``False`` then the :class:`Future` was cancelled,
+      i.e. :meth:`Future.cancel` was called and returned ``True``.  Any threads
+      waiting on the :class:`Future` completing (i.e. through
+      :func:`as_completed` or :func:`wait`) will be woken up.
 
-       If the method returns ``True`` then the :class:`Future` was not cancelled
-       and has been put in the running state, i.e. calls to
-       :meth:`Future.running` will return ``True``.
+      If the method returns ``True`` then the :class:`Future` was not cancelled
+      and has been put in the running state, i.e. calls to
+      :meth:`Future.running` will return ``True``.
 
-       This method can only be called once and cannot be called after
-       :meth:`Future.set_result` or :meth:`Future.set_exception` have been
-       called.
+      This method can only be called once and cannot be called after
+      :meth:`Future.set_result` or :meth:`Future.set_exception` have been
+      called.
 
-    .. method:: set_result(result)
+   .. method:: set_result(result)
 
-       Sets the result of the work associated with the :class:`Future` to
-       *result*.
+      Sets the result of the work associated with the :class:`Future` to
+      *result*.
 
-       This method should only be used by :class:`Executor` implementations and
-       unit tests.
+      This method should only be used by :class:`Executor` implementations and
+      unit tests.
 
-       .. versionchanged:: 3.8
-          This method raises
-          :exc:`concurrent.futures.InvalidStateError` if the :class:`Future` is
-          already done.
+      .. versionchanged:: 3.8
+         This method raises
+         :exc:`concurrent.futures.InvalidStateError` if the :class:`Future` is
+         already done.
 
-    .. method:: set_exception(exception)
+   .. method:: set_exception(exception)
 
-       Sets the result of the work associated with the :class:`Future` to the
-       :class:`Exception` *exception*.
+      Sets the result of the work associated with the :class:`Future` to the
+      :class:`Exception` *exception*.
 
-       This method should only be used by :class:`Executor` implementations and
-       unit tests.
+      This method should only be used by :class:`Executor` implementations and
+      unit tests.
 
-       .. versionchanged:: 3.8
-          This method raises
-          :exc:`concurrent.futures.InvalidStateError` if the :class:`Future` is
-          already done.
+      .. versionchanged:: 3.8
+         This method raises
+         :exc:`concurrent.futures.InvalidStateError` if the :class:`Future` is
+         already done.
 
 Module Functions
 ----------------
diff --git a/Doc/library/concurrent.rst b/Doc/library/concurrent.rst
index 2eba5365125805..8caea78bbb57e8 100644
--- a/Doc/library/concurrent.rst
+++ b/Doc/library/concurrent.rst
@@ -1,5 +1,5 @@
-The :mod:`concurrent` package
-=============================
+The :mod:`!concurrent` package
+==============================
 
 Currently, there is only one module in this package:
 
diff --git a/Doc/library/configparser.rst b/Doc/library/configparser.rst
index a7f75fd6e84f4c..bb282428c5fffc 100644
--- a/Doc/library/configparser.rst
+++ b/Doc/library/configparser.rst
@@ -935,8 +935,10 @@ ConfigParser Objects
 
    When *default_section* is given, it specifies the name for the special
    section holding default values for other sections and interpolation purposes
-   (normally named ``"DEFAULT"``).  This value can be retrieved and changed on
-   runtime using the ``default_section`` instance attribute.
+   (normally named ``"DEFAULT"``).  This value can be retrieved and changed at
+   runtime using the ``default_section`` instance attribute. This won't
+   re-evaluate an already parsed config file, but will be used when writing
+   parsed settings to a new config file.
 
    Interpolation behaviour may be customized by providing a custom handler
    through the *interpolation* argument. ``None`` can be used to turn off
diff --git a/Doc/library/constants.rst b/Doc/library/constants.rst
index 38dd552a0363ac..401dc9a320c5e0 100644
--- a/Doc/library/constants.rst
+++ b/Doc/library/constants.rst
@@ -22,16 +22,16 @@ A small number of constants live in the built-in namespace.  They are:
    An object frequently used to represent the absence of a value, as when
    default arguments are not passed to a function. Assignments to ``None``
    are illegal and raise a :exc:`SyntaxError`.
-   ``None`` is the sole instance of the :data:`NoneType` type.
+   ``None`` is the sole instance of the :data:`~types.NoneType` type.
 
 
 .. data:: NotImplemented
 
    A special value which should be returned by the binary special methods
-   (e.g. :meth:`__eq__`, :meth:`__lt__`, :meth:`__add__`, :meth:`__rsub__`,
+   (e.g. :meth:`~object.__eq__`, :meth:`~object.__lt__`, :meth:`~object.__add__`, :meth:`~object.__rsub__`,
    etc.) to indicate that the operation is not implemented with respect to
    the other type; may be returned by the in-place binary special methods
-   (e.g. :meth:`__imul__`, :meth:`__iand__`, etc.) for the same purpose.
+   (e.g. :meth:`~object.__imul__`, :meth:`~object.__iand__`, etc.) for the same purpose.
    It should not be evaluated in a boolean context.
    ``NotImplemented`` is the sole instance of the :data:`types.NotImplementedType` type.
 
diff --git a/Doc/library/contextlib.rst b/Doc/library/contextlib.rst
index 7cd081d1f54f43..aab319cbe7405e 100644
--- a/Doc/library/contextlib.rst
+++ b/Doc/library/contextlib.rst
@@ -45,7 +45,7 @@ Functions and classes provided:
 
    This function is a :term:`decorator` that can be used to define a factory
    function for :keyword:`with` statement context managers, without needing to
-   create a class or separate :meth:`__enter__` and :meth:`__exit__` methods.
+   create a class or separate :meth:`~object.__enter__` and :meth:`~object.__exit__` methods.
 
    While many objects natively support use in with statements, sometimes a
    resource needs to be managed that isn't a context manager in its own right,
@@ -106,8 +106,8 @@ Functions and classes provided:
 
    This function is a :term:`decorator` that can be used to define a factory
    function for :keyword:`async with` statement asynchronous context managers,
-   without needing to create a class or separate :meth:`__aenter__` and
-   :meth:`__aexit__` methods. It must be applied to an :term:`asynchronous
+   without needing to create a class or separate :meth:`~object.__aenter__` and
+   :meth:`~object.__aexit__` methods. It must be applied to an :term:`asynchronous
    generator` function.
 
    A simple example::
@@ -304,15 +304,15 @@ Functions and classes provided:
 
    This context manager is :ref:`reentrant <reentrant-cms>`.
 
-   If the code within the :keyword:`!with` block raises an
-   :exc:`ExceptionGroup`, suppressed exceptions are removed from the
+   If the code within the :keyword:`!with` block raises a
+   :exc:`BaseExceptionGroup`, suppressed exceptions are removed from the
    group.  If any exceptions in the group are not suppressed, a group containing them is re-raised.
 
    .. versionadded:: 3.4
 
    .. versionchanged:: 3.12
       ``suppress`` now supports suppressing exceptions raised as
-      part of an :exc:`ExceptionGroup`.
+      part of an :exc:`BaseExceptionGroup`.
 
 .. function:: redirect_stdout(new_target)
 
@@ -515,7 +515,7 @@ Functions and classes provided:
           # the with statement, even if attempts to open files later
           # in the list raise an exception
 
-   The :meth:`__enter__` method returns the :class:`ExitStack` instance, and
+   The :meth:`~object.__enter__` method returns the :class:`ExitStack` instance, and
    performs no additional operations.
 
    Each instance maintains a stack of registered callbacks that are called in
@@ -543,9 +543,9 @@ Functions and classes provided:
 
    .. method:: enter_context(cm)
 
-      Enters a new context manager and adds its :meth:`__exit__` method to
+      Enters a new context manager and adds its :meth:`~object.__exit__` method to
       the callback stack. The return value is the result of the context
-      manager's own :meth:`__enter__` method.
+      manager's own :meth:`~object.__enter__` method.
 
       These context managers may suppress exceptions just as they normally
       would if used directly as part of a :keyword:`with` statement.
@@ -556,18 +556,18 @@ Functions and classes provided:
 
    .. method:: push(exit)
 
-      Adds a context manager's :meth:`__exit__` method to the callback stack.
+      Adds a context manager's :meth:`~object.__exit__` method to the callback stack.
 
       As ``__enter__`` is *not* invoked, this method can be used to cover
-      part of an :meth:`__enter__` implementation with a context manager's own
-      :meth:`__exit__` method.
+      part of an :meth:`~object.__enter__` implementation with a context manager's own
+      :meth:`~object.__exit__` method.
 
       If passed an object that is not a context manager, this method assumes
       it is a callback with the same signature as a context manager's
-      :meth:`__exit__` method and adds it directly to the callback stack.
+      :meth:`~object.__exit__` method and adds it directly to the callback stack.
 
       By returning true values, these callbacks can suppress exceptions the
-      same way context manager :meth:`__exit__` methods can.
+      same way context manager :meth:`~object.__exit__` methods can.
 
       The passed in object is returned from the function, allowing this
       method to be used as a function decorator.
@@ -616,12 +616,12 @@ Functions and classes provided:
    asynchronous context managers, as well as having coroutines for
    cleanup logic.
 
-   The :meth:`close` method is not implemented, :meth:`aclose` must be used
+   The :meth:`~ExitStack.close` method is not implemented; :meth:`aclose` must be used
    instead.
 
    .. coroutinemethod:: enter_async_context(cm)
 
-      Similar to :meth:`enter_context` but expects an asynchronous context
+      Similar to :meth:`ExitStack.enter_context` but expects an asynchronous context
       manager.
 
       .. versionchanged:: 3.11
@@ -630,16 +630,16 @@ Functions and classes provided:
 
    .. method:: push_async_exit(exit)
 
-      Similar to :meth:`push` but expects either an asynchronous context manager
+      Similar to :meth:`ExitStack.push` but expects either an asynchronous context manager
       or a coroutine function.
 
    .. method:: push_async_callback(callback, /, *args, **kwds)
 
-      Similar to :meth:`callback` but expects a coroutine function.
+      Similar to :meth:`ExitStack.callback` but expects a coroutine function.
 
    .. coroutinemethod:: aclose()
 
-      Similar to :meth:`close` but properly handles awaitables.
+      Similar to :meth:`ExitStack.close` but properly handles awaitables.
 
    Continuing the example for :func:`asynccontextmanager`::
 
@@ -714,7 +714,7 @@ Cleaning up in an ``__enter__`` implementation
 
 As noted in the documentation of :meth:`ExitStack.push`, this
 method can be useful in cleaning up an already allocated resource if later
-steps in the :meth:`__enter__` implementation fail.
+steps in the :meth:`~object.__enter__` implementation fail.
 
 Here's an example of doing this for a context manager that accepts resource
 acquisition and release functions, along with an optional validation function,
@@ -871,7 +871,7 @@ And also as a function decorator::
 
 Note that there is one additional limitation when using context managers
 as function decorators: there's no way to access the return value of
-:meth:`__enter__`. If that value is needed, then it is still necessary to use
+:meth:`~object.__enter__`. If that value is needed, then it is still necessary to use
 an explicit ``with`` statement.
 
 .. seealso::
diff --git a/Doc/library/copy.rst b/Doc/library/copy.rst
index 8f32477ed508c3..74333b2e934814 100644
--- a/Doc/library/copy.rst
+++ b/Doc/library/copy.rst
@@ -17,14 +17,22 @@ operations (explained below).
 
 Interface summary:
 
-.. function:: copy(x)
+.. function:: copy(obj)
 
-   Return a shallow copy of *x*.
+   Return a shallow copy of *obj*.
 
 
-.. function:: deepcopy(x[, memo])
+.. function:: deepcopy(obj[, memo])
 
-   Return a deep copy of *x*.
+   Return a deep copy of *obj*.
+
+
+.. function:: replace(obj, /, **changes)
+
+   Creates a new object of the same type as *obj*, replacing fields with values
+   from *changes*.
+
+   .. versionadded:: 3.13
 
 
 .. exception:: Error
@@ -79,14 +87,40 @@ pickle functions from the :mod:`copyreg` module.
    single: __copy__() (copy protocol)
    single: __deepcopy__() (copy protocol)
 
+.. currentmodule:: None
+
 In order for a class to define its own copy implementation, it can define
-special methods :meth:`__copy__` and :meth:`__deepcopy__`.  The former is called
-to implement the shallow copy operation; no additional arguments are passed.
-The latter is called to implement the deep copy operation; it is passed one
-argument, the ``memo`` dictionary.  If the :meth:`__deepcopy__` implementation needs
-to make a deep copy of a component, it should call the :func:`deepcopy` function
-with the component as first argument and the memo dictionary as second argument.
-The memo dictionary should be treated as an opaque object.
+special methods :meth:`~object.__copy__` and :meth:`~object.__deepcopy__`.
+
+.. method:: object.__copy__(self)
+   :noindexentry:
+
+   Called to implement the shallow copy operation;
+   no additional arguments are passed.
+
+.. method:: object.__deepcopy__(self, memo)
+   :noindexentry:
+
+   Called to implement the deep copy operation; it is passed one
+   argument, the *memo* dictionary.  If the ``__deepcopy__`` implementation needs
+   to make a deep copy of a component, it should call the :func:`~copy.deepcopy` function
+   with the component as first argument and the *memo* dictionary as second argument.
+   The *memo* dictionary should be treated as an opaque object.
+
+
+.. index::
+   single: __replace__() (replace protocol)
+
+Function :func:`!copy.replace` is more limited
+than :func:`~copy.copy` and :func:`~copy.deepcopy`,
+and only supports named tuples created by :func:`~collections.namedtuple`,
+:mod:`dataclasses`, and other classes which define method :meth:`~object.__replace__`.
+
+.. method:: object.__replace__(self, /, **changes)
+   :noindexentry:
+
+   This method should create a new object of the same type,
+   replacing fields with values from *changes*.
 
 
 .. seealso::
diff --git a/Doc/library/crypt.rst b/Doc/library/crypt.rst
deleted file mode 100644
index 740084b40c5ac9..00000000000000
--- a/Doc/library/crypt.rst
+++ /dev/null
@@ -1,182 +0,0 @@
-:mod:`crypt` --- Function to check Unix passwords
-=================================================
-
-.. module:: crypt
-   :platform: Unix
-   :synopsis: The crypt() function used to check Unix passwords.
-   :deprecated:
-
-.. moduleauthor:: Steven D. Majewski <sdm7g@virginia.edu>
-.. sectionauthor:: Steven D. Majewski <sdm7g@virginia.edu>
-.. sectionauthor:: Peter Funk <pf@artcom-gmbh.de>
-
-**Source code:** :source:`Lib/crypt.py`
-
-.. index::
-   single: crypt(3)
-   pair: cipher; DES
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`crypt` module is deprecated
-   (see :pep:`PEP 594 <594#crypt>` for details and alternatives).
-   The :mod:`hashlib` module is a potential replacement for certain use cases.
-
---------------
-
-This module implements an interface to the :manpage:`crypt(3)` routine, which is
-a one-way hash function based upon a modified DES algorithm; see the Unix man
-page for further details.  Possible uses include storing hashed passwords
-so you can check passwords without storing the actual password, or attempting
-to crack Unix passwords with a dictionary.
-
-.. index:: single: crypt(3)
-
-Notice that the behavior of this module depends on the actual implementation  of
-the :manpage:`crypt(3)` routine in the running system.  Therefore, any
-extensions available on the current implementation will also  be available on
-this module.
-
-.. availability:: Unix, not VxWorks.
-
-.. include:: ../includes/wasm-notavail.rst
-
-Hashing Methods
----------------
-
-.. versionadded:: 3.3
-
-The :mod:`crypt` module defines the list of hashing methods (not all methods
-are available on all platforms):
-
-.. data:: METHOD_SHA512
-
-   A Modular Crypt Format method with 16 character salt and 86 character
-   hash based on the SHA-512 hash function.  This is the strongest method.
-
-.. data:: METHOD_SHA256
-
-   Another Modular Crypt Format method with 16 character salt and 43
-   character hash based on the SHA-256 hash function.
-
-.. data:: METHOD_BLOWFISH
-
-   Another Modular Crypt Format method with 22 character salt and 31
-   character hash based on the Blowfish cipher.
-
-   .. versionadded:: 3.7
-
-.. data:: METHOD_MD5
-
-   Another Modular Crypt Format method with 8 character salt and 22
-   character hash based on the MD5 hash function.
-
-.. data:: METHOD_CRYPT
-
-   The traditional method with a 2 character salt and 13 characters of
-   hash.  This is the weakest method.
-
-
-Module Attributes
------------------
-
-.. versionadded:: 3.3
-
-.. attribute:: methods
-
-   A list of available password hashing algorithms, as
-   ``crypt.METHOD_*`` objects.  This list is sorted from strongest to
-   weakest.
-
-
-Module Functions
-----------------
-
-The :mod:`crypt` module defines the following functions:
-
-.. function:: crypt(word, salt=None)
-
-   *word* will usually be a user's password as typed at a prompt or  in a graphical
-   interface.  The optional *salt* is either a string as returned from
-   :func:`mksalt`, one of the ``crypt.METHOD_*`` values (though not all
-   may be available on all platforms), or a full encrypted password
-   including salt, as returned by this function.  If *salt* is not
-   provided, the strongest method available in :attr:`methods` will be used.
-
-   Checking a password is usually done by passing the plain-text password
-   as *word* and the full results of a previous :func:`crypt` call,
-   which should be the same as the results of this call.
-
-   *salt* (either a random 2 or 16 character string, possibly prefixed with
-   ``$digit$`` to indicate the method) which will be used to perturb the
-   encryption algorithm.  The characters in *salt* must be in the set
-   ``[./a-zA-Z0-9]``, with the exception of Modular Crypt Format which
-   prefixes a ``$digit$``.
-
-   Returns the hashed password as a string, which will be composed of
-   characters from the same alphabet as the salt.
-
-   .. index:: single: crypt(3)
-
-   Since a few :manpage:`crypt(3)` extensions allow different values, with
-   different sizes in the *salt*, it is recommended to use  the full crypted
-   password as salt when checking for a password.
-
-   .. versionchanged:: 3.3
-      Accept ``crypt.METHOD_*`` values in addition to strings for *salt*.
-
-
-.. function:: mksalt(method=None, *, rounds=None)
-
-   Return a randomly generated salt of the specified method.  If no
-   *method* is given, the strongest method available in :attr:`methods` is
-   used.
-
-   The return value is a string suitable for passing as the *salt* argument
-   to :func:`crypt`.
-
-   *rounds* specifies the number of rounds for ``METHOD_SHA256``,
-   ``METHOD_SHA512`` and ``METHOD_BLOWFISH``.
-   For ``METHOD_SHA256`` and ``METHOD_SHA512`` it must be an integer between
-   ``1000`` and ``999_999_999``, the default is ``5000``.  For
-   ``METHOD_BLOWFISH`` it must be a power of two between ``16`` (2\ :sup:`4`)
-   and ``2_147_483_648`` (2\ :sup:`31`), the default is ``4096``
-   (2\ :sup:`12`).
-
-   .. versionadded:: 3.3
-
-   .. versionchanged:: 3.7
-      Added the *rounds* parameter.
-
-
-Examples
---------
-
-A simple example illustrating typical use (a constant-time comparison
-operation is needed to limit exposure to timing attacks.
-:func:`hmac.compare_digest` is suitable for this purpose)::
-
-   import pwd
-   import crypt
-   import getpass
-   from hmac import compare_digest as compare_hash
-
-   def login():
-       username = input('Python login: ')
-       cryptedpasswd = pwd.getpwnam(username)[1]
-       if cryptedpasswd:
-           if cryptedpasswd == 'x' or cryptedpasswd == '*':
-               raise ValueError('no support for shadow passwords')
-           cleartext = getpass.getpass()
-           return compare_hash(crypt.crypt(cleartext, cryptedpasswd), cryptedpasswd)
-       else:
-           return True
-
-To generate a hash of a password using the strongest available method and
-check it against the original::
-
-   import crypt
-   from hmac import compare_digest as compare_hash
-
-   hashed = crypt.crypt(plaintext)
-   if not compare_hash(hashed, crypt.crypt(plaintext, hashed)):
-       raise ValueError("hashed version doesn't validate against original")
diff --git a/Doc/library/crypto.rst b/Doc/library/crypto.rst
index ae45549a6d8941..5a3b7a807213f4 100644
--- a/Doc/library/crypto.rst
+++ b/Doc/library/crypto.rst
@@ -8,7 +8,6 @@ Cryptographic Services
 
 The modules described in this chapter implement various algorithms of a
 cryptographic nature.  They are available at the discretion of the installation.
-On Unix systems, the :mod:`crypt` module may also be available.
 Here's an overview:
 
 
diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst
index 64baa69be4af31..aba398b8ee1e54 100644
--- a/Doc/library/csv.rst
+++ b/Doc/library/csv.rst
@@ -288,9 +288,9 @@ The :mod:`csv` module defines the following classes:
       Inspecting each column, one of two key criteria will be considered to
       estimate if the sample contains a header:
 
-        - the second through n-th rows contain numeric values
-        - the second through n-th rows contain strings where at least one value's
-          length differs from that of the putative header of that column.
+      - the second through n-th rows contain numeric values
+      - the second through n-th rows contain strings where at least one value's
+        length differs from that of the putative header of that column.
 
       Twenty rows after the first row are sampled; if more than half of columns +
       rows meet the criteria, :const:`True` is returned.
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 81509c0920bb6e..ef3a9a0f5898af 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -41,7 +41,7 @@ You load libraries by accessing them as attributes of these objects. *cdll*
 loads libraries which export functions using the standard ``cdecl`` calling
 convention, while *windll* libraries call functions using the ``stdcall``
 calling convention. *oledll* also uses the ``stdcall`` calling convention, and
-assumes the functions return a Windows :c:type:`HRESULT` error code. The error
+assumes the functions return a Windows :c:type:`!HRESULT` error code. The error
 code is used to automatically raise an :class:`OSError` exception when the
 function call fails.
 
@@ -72,8 +72,9 @@ Windows appends the usual ``.dll`` file suffix automatically.
 
 On Linux, it is required to specify the filename *including* the extension to
 load a library, so attribute access can not be used to load libraries. Either the
-:meth:`LoadLibrary` method of the dll loaders should be used, or you should load
-the library by creating an instance of CDLL by calling the constructor::
+:meth:`~LibraryLoader.LoadLibrary` method of the dll loaders should be used,
+or you should load the library by creating an instance of CDLL by calling
+the constructor::
 
    >>> cdll.LoadLibrary("libc.so.6")  # doctest: +LINUX
    <CDLL 'libc.so.6', handle ... at ...>
@@ -220,7 +221,7 @@ Fundamental data types
 +----------------------+------------------------------------------+----------------------------+
 | :class:`c_char`      | :c:expr:`char`                           | 1-character bytes object   |
 +----------------------+------------------------------------------+----------------------------+
-| :class:`c_wchar`     | :c:expr:`wchar_t`                        | 1-character string         |
+| :class:`c_wchar`     | :c:type:`wchar_t`                        | 1-character string         |
 +----------------------+------------------------------------------+----------------------------+
 | :class:`c_byte`      | :c:expr:`char`                           | int                        |
 +----------------------+------------------------------------------+----------------------------+
@@ -243,9 +244,9 @@ Fundamental data types
 | :class:`c_ulonglong` | :c:expr:`unsigned __int64` or            | int                        |
 |                      | :c:expr:`unsigned long long`             |                            |
 +----------------------+------------------------------------------+----------------------------+
-| :class:`c_size_t`    | :c:expr:`size_t`                         | int                        |
+| :class:`c_size_t`    | :c:type:`size_t`                         | int                        |
 +----------------------+------------------------------------------+----------------------------+
-| :class:`c_ssize_t`   | :c:expr:`ssize_t` or                     | int                        |
+| :class:`c_ssize_t`   | :c:type:`ssize_t` or                     | int                        |
 |                      | :c:expr:`Py_ssize_t`                     |                            |
 +----------------------+------------------------------------------+----------------------------+
 | :class:`c_time_t`    | :c:type:`time_t`                         | int                        |
@@ -333,9 +334,9 @@ property::
    10 b'Hi\x00lo\x00\x00\x00\x00\x00'
    >>>
 
-The :func:`create_string_buffer` function replaces the old :func:`c_buffer`
+The :func:`create_string_buffer` function replaces the old :func:`!c_buffer`
 function (which is still available as an alias).  To create a mutable memory
-block containing unicode characters of the C type :c:expr:`wchar_t`, use the
+block containing unicode characters of the C type :c:type:`wchar_t`, use the
 :func:`create_unicode_buffer` function.
 
 
@@ -361,7 +362,7 @@ from within *IDLE* or *PythonWin*::
    >>> printf(b"%f bottles of beer\n", 42.5)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
-   ArgumentError: argument 2: TypeError: Don't know how to convert parameter 2
+   ctypes.ArgumentError: argument 2: TypeError: Don't know how to convert parameter 2
    >>>
 
 As has been mentioned before, all Python types except integers, strings, and
@@ -383,15 +384,15 @@ as calling functions with a fixed number of parameters. On some platforms, and i
 particular ARM64 for Apple Platforms, the calling convention for variadic functions
 is different than that for regular functions.
 
-On those platforms it is required to specify the *argtypes* attribute for the
-regular, non-variadic, function arguments:
+On those platforms it is required to specify the :attr:`~_FuncPtr.argtypes`
+attribute for the regular, non-variadic, function arguments:
 
 .. code-block:: python3
 
    libc.printf.argtypes = [ctypes.c_char_p]
 
 Because specifying the attribute does not inhibit portability it is advised to always
-specify ``argtypes`` for all variadic functions.
+specify :attr:`~_FuncPtr.argtypes` for all variadic functions.
 
 
 .. _ctypes-calling-functions-with-own-custom-data-types:
@@ -400,9 +401,10 @@ Calling functions with your own custom data types
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 You can also customize :mod:`ctypes` argument conversion to allow instances of
-your own classes be used as function arguments.  :mod:`ctypes` looks for an
-:attr:`_as_parameter_` attribute and uses this as the function argument.  Of
-course, it must be one of integer, string, or bytes::
+your own classes be used as function arguments. :mod:`ctypes` looks for an
+:attr:`!_as_parameter_` attribute and uses this as the function argument. The
+attribute must be an integer, string, bytes, a :mod:`ctypes` instance, or an
+object with an :attr:`!_as_parameter_` attribute::
 
    >>> class Bottles:
    ...     def __init__(self, number):
@@ -414,7 +416,7 @@ course, it must be one of integer, string, or bytes::
    19
    >>>
 
-If you don't want to store the instance's data in the :attr:`_as_parameter_`
+If you don't want to store the instance's data in the :attr:`!_as_parameter_`
 instance variable, you could define a :class:`property` which makes the
 attribute available on request.
 
@@ -425,9 +427,9 @@ Specifying the required argument types (function prototypes)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 It is possible to specify the required argument types of functions exported from
-DLLs by setting the :attr:`argtypes` attribute.
+DLLs by setting the :attr:`~_FuncPtr.argtypes` attribute.
 
-:attr:`argtypes` must be a sequence of C data types (the ``printf`` function is
+:attr:`~_FuncPtr.argtypes` must be a sequence of C data types (the :func:`!printf` function is
 probably not a good example here, because it takes a variable number and
 different types of parameters depending on the format string, on the other hand
 this is quite handy to experiment with this feature)::
@@ -444,21 +446,21 @@ prototype for a C function), and tries to convert the arguments to valid types::
    >>> printf(b"%d %d %d", 1, 2, 3)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
-   ArgumentError: argument 2: TypeError: wrong type
+   ctypes.ArgumentError: argument 2: TypeError: 'int' object cannot be interpreted as ctypes.c_char_p
    >>> printf(b"%s %d %f\n", b"X", 2, 3)
    X 2 3.000000
    13
    >>>
 
 If you have defined your own classes which you pass to function calls, you have
-to implement a :meth:`from_param` class method for them to be able to use them
-in the :attr:`argtypes` sequence. The :meth:`from_param` class method receives
+to implement a :meth:`~_CData.from_param` class method for them to be able to use them
+in the :attr:`~_FuncPtr.argtypes` sequence. The :meth:`~_CData.from_param` class method receives
 the Python object passed to the function call, it should do a typecheck or
 whatever is needed to make sure this object is acceptable, and then return the
-object itself, its :attr:`_as_parameter_` attribute, or whatever you want to
+object itself, its :attr:`!_as_parameter_` attribute, or whatever you want to
 pass as the C function argument in this case. Again, the result should be an
 integer, string, bytes, a :mod:`ctypes` instance, or an object with an
-:attr:`_as_parameter_` attribute.
+:attr:`!_as_parameter_` attribute.
 
 
 .. _ctypes-return-types:
@@ -475,16 +477,16 @@ Return types
 
 
 By default functions are assumed to return the C :c:expr:`int` type.  Other
-return types can be specified by setting the :attr:`restype` attribute of the
+return types can be specified by setting the :attr:`~_FuncPtr.restype` attribute of the
 function object.
 
-The C prototype of ``time()`` is ``time_t time(time_t *)``. Because ``time_t``
-might be of a different type than the default return type ``int``, you should
-specify the ``restype``::
+The C prototype of :c:func:`time` is ``time_t time(time_t *)``. Because :c:type:`time_t`
+might be of a different type than the default return type :c:expr:`int`, you should
+specify the :attr:`!restype` attribute::
 
    >>> libc.time.restype = c_time_t
 
-The argument types can be specified using ``argtypes``::
+The argument types can be specified using :attr:`~_FuncPtr.argtypes`::
 
    >>> libc.time.argtypes = (POINTER(c_time_t),)
 
@@ -493,7 +495,7 @@ To call the function with a ``NULL`` pointer as first argument, use ``None``::
    >>> print(libc.time(None))  # doctest: +SKIP
    1150640792
 
-Here is a more advanced example, it uses the ``strchr`` function, which expects
+Here is a more advanced example, it uses the :func:`!strchr` function, which expects
 a string pointer and a char, and returns a pointer to a string::
 
    >>> strchr = libc.strchr
@@ -506,8 +508,8 @@ a string pointer and a char, and returns a pointer to a string::
    None
    >>>
 
-If you want to avoid the ``ord("x")`` calls above, you can set the
-:attr:`argtypes` attribute, and the second argument will be converted from a
+If you want to avoid the :func:`ord("x") <ord>` calls above, you can set the
+:attr:`~_FuncPtr.argtypes` attribute, and the second argument will be converted from a
 single character Python bytes object into a C char:
 
 .. doctest::
@@ -526,7 +528,7 @@ single character Python bytes object into a C char:
    >>>
 
 You can also use a callable Python object (a function or a class for example) as
-the :attr:`restype` attribute, if the foreign function returns an integer.  The
+the :attr:`~_FuncPtr.restype` attribute, if the foreign function returns an integer.  The
 callable will be called with the *integer* the C function returns, and the
 result of this call will be used as the result of your function call. This is
 useful to check for error return values and automatically raise an exception::
@@ -554,7 +556,8 @@ get the string representation of an error code, and *returns* an exception.
 :func:`GetLastError` to retrieve it.
 
 Please note that a much more powerful error checking mechanism is available
-through the :attr:`errcheck` attribute; see the reference manual for details.
+through the :attr:`~_FuncPtr.errcheck` attribute;
+see the reference manual for details.
 
 
 .. _ctypes-passing-pointers:
@@ -592,7 +595,7 @@ Structures and unions
 
 Structures and unions must derive from the :class:`Structure` and :class:`Union`
 base classes which are defined in the :mod:`ctypes` module. Each subclass must
-define a :attr:`_fields_` attribute.  :attr:`_fields_` must be a list of
+define a :attr:`~Structure._fields_` attribute.  :attr:`!_fields_` must be a list of
 *2-tuples*, containing a *field name* and a *field type*.
 
 The field type must be a :mod:`ctypes` type like :class:`c_int`, or any other
@@ -664,9 +667,9 @@ Structure/union alignment and byte order
 
 By default, Structure and Union fields are aligned in the same way the C
 compiler does it. It is possible to override this behavior by specifying a
-:attr:`_pack_` class attribute in the subclass definition. This must be set to a
-positive integer and specifies the maximum alignment for the fields. This is
-what ``#pragma pack(n)`` also does in MSVC.
+:attr:`~Structure._pack_` class attribute in the subclass definition.
+This must be set to a positive integer and specifies the maximum alignment for the fields.
+This is what ``#pragma pack(n)`` also does in MSVC.
 
 :mod:`ctypes` uses the native byte order for Structures and Unions.  To build
 structures with non-native byte order, you can use one of the
@@ -682,7 +685,7 @@ Bit fields in structures and unions
 
 It is possible to create structures and unions containing bit fields. Bit fields
 are only possible for integer fields, the bit width is specified as the third
-item in the :attr:`_fields_` tuples::
+item in the :attr:`~Structure._fields_` tuples::
 
    >>> class Int(Structure):
    ...     _fields_ = [("first_16", c_int, 16),
@@ -853,7 +856,7 @@ Type conversions
 ^^^^^^^^^^^^^^^^
 
 Usually, ctypes does strict type checking.  This means, if you have
-``POINTER(c_int)`` in the :attr:`argtypes` list of a function or as the type of
+``POINTER(c_int)`` in the :attr:`~_FuncPtr.argtypes` list of a function or as the type of
 a member field in a structure definition, only instances of exactly the same
 type are accepted.  There are some exceptions to this rule, where ctypes accepts
 other objects.  For example, you can pass compatible array instances instead of
@@ -874,7 +877,7 @@ pointer types.  So, for ``POINTER(c_int)``, ctypes accepts an array of c_int::
    >>>
 
 In addition, if a function argument is explicitly declared to be a pointer type
-(such as ``POINTER(c_int)``) in :attr:`argtypes`, an object of the pointed
+(such as ``POINTER(c_int)``) in :attr:`~_FuncPtr.argtypes`, an object of the pointed
 type (``c_int`` in this case) can be passed to the function.  ctypes will apply
 the required :func:`byref` conversion in this case automatically.
 
@@ -950,8 +953,8 @@ work::
    >>>
 
 because the new ``class cell`` is not available in the class statement itself.
-In :mod:`ctypes`, we can define the ``cell`` class and set the :attr:`_fields_`
-attribute later, after the class statement::
+In :mod:`ctypes`, we can define the ``cell`` class and set the
+:attr:`~Structure._fields_` attribute later, after the class statement::
 
    >>> from ctypes import *
    >>> class cell(Structure):
@@ -1001,8 +1004,8 @@ argument, and the callback functions expected argument types as the remaining
 arguments.
 
 I will present an example here which uses the standard C library's
-:c:func:`qsort` function, that is used to sort items with the help of a callback
-function.  :c:func:`qsort` will be used to sort an array of integers::
+:c:func:`!qsort` function, that is used to sort items with the help of a callback
+function.  :c:func:`!qsort` will be used to sort an array of integers::
 
    >>> IntArray5 = c_int * 5
    >>> ia = IntArray5(5, 1, 7, 33, 99)
@@ -1010,7 +1013,7 @@ function.  :c:func:`qsort` will be used to sort an array of integers::
    >>> qsort.restype = None
    >>>
 
-:func:`qsort` must be called with a pointer to the data to sort, the number of
+:func:`!qsort` must be called with a pointer to the data to sort, the number of
 items in the data array, the size of one item, and a pointer to the comparison
 function, the callback. The callback will then be called with two pointers to
 items, and it must return a negative integer if the first item is smaller than
@@ -1102,7 +1105,7 @@ Some shared libraries not only export functions, they also export variables. An
 example in the Python library itself is the :c:data:`Py_Version`, Python
 runtime version number encoded in a single constant integer.
 
-:mod:`ctypes` can access values like this with the :meth:`in_dll` class methods of
+:mod:`ctypes` can access values like this with the :meth:`~_CData.in_dll` class methods of
 the type.  *pythonapi* is a predefined symbol giving access to the Python C
 api::
 
@@ -1292,13 +1295,13 @@ Finding shared libraries
 When programming in a compiled language, shared libraries are accessed when
 compiling/linking a program, and when the program is run.
 
-The purpose of the :func:`find_library` function is to locate a library in a way
+The purpose of the :func:`~ctypes.util.find_library` function is to locate a library in a way
 similar to what the compiler or runtime loader does (on platforms with several
 versions of a shared library the most recent should be loaded), while the ctypes
 library loaders act like when a program is run, and call the runtime loader
 directly.
 
-The :mod:`ctypes.util` module provides a function which can help to determine
+The :mod:`!ctypes.util` module provides a function which can help to determine
 the library to load.
 
 
@@ -1313,7 +1316,7 @@ the library to load.
 
 The exact functionality is system dependent.
 
-On Linux, :func:`find_library` tries to run external programs
+On Linux, :func:`~ctypes.util.find_library` tries to run external programs
 (``/sbin/ldconfig``, ``gcc``, ``objdump`` and ``ld``) to find the library file.
 It returns the filename of the library file.
 
@@ -1332,7 +1335,7 @@ Here are some examples::
    'libbz2.so.1.0'
    >>>
 
-On macOS, :func:`find_library` tries several predefined naming schemes and paths
+On macOS, :func:`~ctypes.util.find_library` tries several predefined naming schemes and paths
 to locate the library, and returns a full pathname if successful::
 
    >>> from ctypes.util import find_library
@@ -1346,13 +1349,13 @@ to locate the library, and returns a full pathname if successful::
    '/System/Library/Frameworks/AGL.framework/AGL'
    >>>
 
-On Windows, :func:`find_library` searches along the system search path, and
+On Windows, :func:`~ctypes.util.find_library` searches along the system search path, and
 returns the full pathname, but since there is no predefined naming scheme a call
 like ``find_library("c")`` will fail and return ``None``.
 
 If wrapping a shared library with :mod:`ctypes`, it *may* be better to determine
 the shared library name at development time, and hardcode that into the wrapper
-module instead of using :func:`find_library` to locate the library at runtime.
+module instead of using :func:`~ctypes.util.find_library` to locate the library at runtime.
 
 
 .. _ctypes-loading-shared-libraries:
@@ -1400,7 +1403,8 @@ way is to instantiate one of the following classes:
    failure, an :class:`OSError` is automatically raised.
 
    .. versionchanged:: 3.3
-      :exc:`WindowsError` used to be raised.
+      :exc:`WindowsError` used to be raised,
+      which is now an alias of :exc:`OSError`.
 
    .. versionchanged:: 3.12
 
@@ -1437,9 +1441,9 @@ function exported by these libraries, and reacquired afterwards.
 All these classes can be instantiated by calling them with at least one
 argument, the pathname of the shared library.  If you have an existing handle to
 an already loaded shared library, it can be passed as the ``handle`` named
-parameter, otherwise the underlying platforms ``dlopen`` or ``LoadLibrary``
-function is used to load the library into the process, and to get a handle to
-it.
+parameter, otherwise the underlying platforms :c:func:`!dlopen` or
+:c:func:`!LoadLibrary` function is used to load the library into
+the process, and to get a handle to it.
 
 The *mode* parameter can be used to specify how the library is loaded.  For
 details, consult the :manpage:`dlopen(3)` manpage.  On Windows, *mode* is
@@ -1459,7 +1463,7 @@ to a new value and returns the former value.
 
 The *use_last_error* parameter, when set to true, enables the same mechanism for
 the Windows error code which is managed by the :func:`GetLastError` and
-:func:`SetLastError` Windows API functions; :func:`ctypes.get_last_error` and
+:func:`!SetLastError` Windows API functions; :func:`ctypes.get_last_error` and
 :func:`ctypes.set_last_error` are used to request and change the ctypes private
 copy of the windows error code.
 
@@ -1522,8 +1526,8 @@ underscore to not clash with exported function names:
 
 Shared libraries can also be loaded by using one of the prefabricated objects,
 which are instances of the :class:`LibraryLoader` class, either by calling the
-:meth:`LoadLibrary` method, or by retrieving the library as attribute of the
-loader instance.
+:meth:`~LibraryLoader.LoadLibrary` method, or by retrieving the library as
+attribute of the loader instance.
 
 
 .. class:: LibraryLoader(dlltype)
@@ -1531,7 +1535,7 @@ loader instance.
    Class which loads shared libraries.  *dlltype* should be one of the
    :class:`CDLL`, :class:`PyDLL`, :class:`WinDLL`, or :class:`OleDLL` types.
 
-   :meth:`__getattr__` has special behavior: It allows loading a shared library by
+   :meth:`!__getattr__` has special behavior: It allows loading a shared library by
    accessing it as attribute of a library loader instance.  The result is cached,
    so repeated attribute accesses return the same library each time.
 
@@ -1576,7 +1580,7 @@ object is available:
    An instance of :class:`PyDLL` that exposes Python C API functions as
    attributes.  Note that all these functions are assumed to return C
    :c:expr:`int`, which is of course not always the truth, so you have to assign
-   the correct :attr:`restype` attribute to use these functions.
+   the correct :attr:`!restype` attribute to use these functions.
 
 .. audit-event:: ctypes.dlopen name ctypes.LibraryLoader
 
@@ -1628,7 +1632,7 @@ They are instances of a private class:
       the callable will be called with this integer, allowing further
       processing or error checking.  Using this is deprecated, for more flexible
       post processing or error checking use a ctypes data type as
-      :attr:`restype` and assign a callable to the :attr:`errcheck` attribute.
+      :attr:`!restype` and assign a callable to the :attr:`errcheck` attribute.
 
    .. attribute:: argtypes
 
@@ -1639,14 +1643,14 @@ They are instances of a private class:
       unspecified arguments as well.
 
       When a foreign function is called, each actual argument is passed to the
-      :meth:`from_param` class method of the items in the :attr:`argtypes`
+      :meth:`~_CData.from_param` class method of the items in the :attr:`argtypes`
       tuple, this method allows adapting the actual argument to an object that
       the foreign function accepts.  For example, a :class:`c_char_p` item in
       the :attr:`argtypes` tuple will convert a string passed as argument into
       a bytes object using ctypes conversion rules.
 
       New: It is now possible to put items in argtypes which are not ctypes
-      types, but each item must have a :meth:`from_param` method which returns a
+      types, but each item must have a :meth:`~_CData.from_param` method which returns a
       value usable as argument (integer, string, ctypes instance).  This allows
       defining adapters that can adapt custom objects as function parameters.
 
@@ -1660,7 +1664,7 @@ They are instances of a private class:
          :module:
 
          *result* is what the foreign function returns, as specified by the
-         :attr:`restype` attribute.
+         :attr:`!restype` attribute.
 
          *func* is the foreign function object itself, this allows reusing the
          same callable object to check or post process the results of several
@@ -1734,70 +1738,70 @@ See :ref:`ctypes-callback-functions` for examples.
 Function prototypes created by these factory functions can be instantiated in
 different ways, depending on the type and number of the parameters in the call:
 
+.. function:: prototype(address)
+   :noindex:
+   :module:
 
-   .. function:: prototype(address)
-      :noindex:
-      :module:
+   Returns a foreign function at the specified address which must be an integer.
 
-      Returns a foreign function at the specified address which must be an integer.
 
+.. function:: prototype(callable)
+   :noindex:
+   :module:
 
-   .. function:: prototype(callable)
-      :noindex:
-      :module:
+   Create a C callable function (a callback function) from a Python *callable*.
 
-      Create a C callable function (a callback function) from a Python *callable*.
 
+.. function:: prototype(func_spec[, paramflags])
+   :noindex:
+   :module:
 
-   .. function:: prototype(func_spec[, paramflags])
-      :noindex:
-      :module:
+   Returns a foreign function exported by a shared library. *func_spec* must
+   be a 2-tuple ``(name_or_ordinal, library)``. The first item is the name of
+   the exported function as string, or the ordinal of the exported function
+   as small integer.  The second item is the shared library instance.
 
-      Returns a foreign function exported by a shared library. *func_spec* must
-      be a 2-tuple ``(name_or_ordinal, library)``. The first item is the name of
-      the exported function as string, or the ordinal of the exported function
-      as small integer.  The second item is the shared library instance.
 
+.. function:: prototype(vtbl_index, name[, paramflags[, iid]])
+   :noindex:
+   :module:
 
-   .. function:: prototype(vtbl_index, name[, paramflags[, iid]])
-      :noindex:
-      :module:
+   Returns a foreign function that will call a COM method. *vtbl_index* is
+   the index into the virtual function table, a small non-negative
+   integer. *name* is name of the COM method. *iid* is an optional pointer to
+   the interface identifier which is used in extended error reporting.
 
-      Returns a foreign function that will call a COM method. *vtbl_index* is
-      the index into the virtual function table, a small non-negative
-      integer. *name* is name of the COM method. *iid* is an optional pointer to
-      the interface identifier which is used in extended error reporting.
+   COM methods use a special calling convention: They require a pointer to
+   the COM interface as first argument, in addition to those parameters that
+   are specified in the :attr:`!argtypes` tuple.
 
-      COM methods use a special calling convention: They require a pointer to
-      the COM interface as first argument, in addition to those parameters that
-      are specified in the :attr:`argtypes` tuple.
+The optional *paramflags* parameter creates foreign function wrappers with much
+more functionality than the features described above.
 
-   The optional *paramflags* parameter creates foreign function wrappers with much
-   more functionality than the features described above.
+*paramflags* must be a tuple of the same length as :attr:`~_FuncPtr.argtypes`.
 
-   *paramflags* must be a tuple of the same length as :attr:`argtypes`.
+Each item in this tuple contains further information about a parameter, it must
+be a tuple containing one, two, or three items.
 
-   Each item in this tuple contains further information about a parameter, it must
-   be a tuple containing one, two, or three items.
+The first item is an integer containing a combination of direction
+flags for the parameter:
 
-   The first item is an integer containing a combination of direction
-   flags for the parameter:
+   1
+      Specifies an input parameter to the function.
 
-      1
-         Specifies an input parameter to the function.
+   2
+      Output parameter.  The foreign function fills in a value.
 
-      2
-         Output parameter.  The foreign function fills in a value.
+   4
+      Input parameter which defaults to the integer zero.
 
-      4
-         Input parameter which defaults to the integer zero.
+The optional second item is the parameter name as string.  If this is specified,
+the foreign function can be called with named parameters.
 
-   The optional second item is the parameter name as string.  If this is specified,
-   the foreign function can be called with named parameters.
+The optional third item is the default value for this parameter.
 
-   The optional third item is the default value for this parameter.
 
-This example demonstrates how to wrap the Windows ``MessageBoxW`` function so
+The following example demonstrates how to wrap the Windows ``MessageBoxW`` function so
 that it supports default parameters and named arguments. The C declaration from
 the windows header file is this::
 
@@ -1845,7 +1849,7 @@ value if there is a single one, or a tuple containing the output parameter
 values when there are more than one, so the GetWindowRect function now returns a
 RECT instance, when called.
 
-Output parameters can be combined with the :attr:`errcheck` protocol to do
+Output parameters can be combined with the :attr:`~_FuncPtr.errcheck` protocol to do
 further output processing and error checking.  The win32 ``GetWindowRect`` api
 function returns a ``BOOL`` to signal success or failure, so this function could
 do the error checking, and raises an exception when the api call failed::
@@ -1858,7 +1862,7 @@ do the error checking, and raises an exception when the api call failed::
    >>> GetWindowRect.errcheck = errcheck
    >>>
 
-If the :attr:`errcheck` function returns the argument tuple it receives
+If the :attr:`~_FuncPtr.errcheck` function returns the argument tuple it receives
 unchanged, :mod:`ctypes` continues the normal processing it does on the output
 parameters.  If you want to return a tuple of window coordinates instead of a
 ``RECT`` instance, you can retrieve the fields in the function and return them
@@ -2008,7 +2012,7 @@ Utility functions
 .. function:: get_last_error()
 
    Windows only: returns the current value of the ctypes-private copy of the system
-   :data:`LastError` variable in the calling thread.
+   :data:`!LastError` variable in the calling thread.
 
    .. audit-event:: ctypes.get_last_error "" ctypes.get_last_error
 
@@ -2026,17 +2030,17 @@ Utility functions
    specifying an address, or a ctypes instance.
 
 
-.. function:: POINTER(type)
+.. function:: POINTER(type, /)
 
-   This factory function creates and returns a new ctypes pointer type. Pointer
-   types are cached and reused internally, so calling this function repeatedly is
-   cheap. *type* must be a ctypes type.
+   Create and return a new ctypes pointer type. Pointer types are cached and
+   reused internally, so calling this function repeatedly is cheap.
+   *type* must be a ctypes type.
 
 
-.. function:: pointer(obj)
+.. function:: pointer(obj, /)
 
-   This function creates a new pointer instance, pointing to *obj*. The returned
-   object is of the type ``POINTER(type(obj))``.
+   Create a new pointer instance, pointing to *obj*.
+   The returned object is of the type ``POINTER(type(obj))``.
 
    Note: If you just want to pass a pointer to an object to a foreign function
    call, you should use ``byref(obj)`` which is much faster.
@@ -2061,7 +2065,7 @@ Utility functions
 .. function:: set_last_error(value)
 
    Windows only: set the current value of the ctypes-private copy of the system
-   :data:`LastError` variable in the calling thread to *value* and return the
+   :data:`!LastError` variable in the calling thread to *value* and return the
    previous value.
 
    .. audit-event:: ctypes.set_last_error error ctypes.set_last_error
@@ -2085,13 +2089,14 @@ Utility functions
 .. function:: WinError(code=None, descr=None)
 
    Windows only: this function is probably the worst-named thing in ctypes. It
-   creates an instance of OSError.  If *code* is not specified,
+   creates an instance of :exc:`OSError`.  If *code* is not specified,
    ``GetLastError`` is called to determine the error code. If *descr* is not
    specified, :func:`FormatError` is called to get a textual description of the
    error.
 
    .. versionchanged:: 3.3
-      An instance of :exc:`WindowsError` used to be created.
+      An instance of :exc:`WindowsError` used to be created, which is now an
+      alias of :exc:`OSError`.
 
 
 .. function:: wstring_at(address, size=-1)
@@ -2157,8 +2162,8 @@ Data types
 
       This method adapts *obj* to a ctypes type.  It is called with the actual
       object used in a foreign function call when the type is present in the
-      foreign function's :attr:`argtypes` tuple; it must return an object that
-      can be used as a function call parameter.
+      foreign function's :attr:`~_FuncPtr.argtypes` tuple;
+      it must return an object that can be used as a function call parameter.
 
       All ctypes data types have a default implementation of this classmethod
       that normally returns *obj* if that is an instance of the type.  Some
@@ -2223,13 +2228,13 @@ Fundamental data types
 Fundamental data types, when returned as foreign function call results, or, for
 example, by retrieving structure field members or array items, are transparently
 converted to native Python types.  In other words, if a foreign function has a
-:attr:`restype` of :class:`c_char_p`, you will always receive a Python bytes
+:attr:`~_FuncPtr.restype` of :class:`c_char_p`, you will always receive a Python bytes
 object, *not* a :class:`c_char_p` instance.
 
 .. XXX above is false, it actually returns a Unicode string
 
 Subclasses of fundamental data types do *not* inherit this behavior. So, if a
-foreign functions :attr:`restype` is a subclass of :class:`c_void_p`, you will
+foreign functions :attr:`!restype` is a subclass of :class:`c_void_p`, you will
 receive an instance of this subclass from the function call. Of course, you can
 get the value of the pointer by accessing the ``value`` attribute.
 
@@ -2407,7 +2412,7 @@ These are the fundamental ctypes data types:
 
 .. class:: c_wchar
 
-   Represents the C :c:expr:`wchar_t` datatype, and interprets the value as a
+   Represents the C :c:type:`wchar_t` datatype, and interprets the value as a
    single character unicode string.  The constructor accepts an optional string
    initializer, the length of the string must be exactly one character.
 
@@ -2428,7 +2433,7 @@ These are the fundamental ctypes data types:
 
 .. class:: HRESULT
 
-   Windows only: Represents a :c:type:`HRESULT` value, which contains success or
+   Windows only: Represents a :c:type:`!HRESULT` value, which contains success or
    error information for a function or method call.
 
 
@@ -2437,9 +2442,9 @@ These are the fundamental ctypes data types:
    Represents the C :c:expr:`PyObject *` datatype.  Calling this without an
    argument creates a ``NULL`` :c:expr:`PyObject *` pointer.
 
-The :mod:`ctypes.wintypes` module provides quite some other Windows specific
-data types, for example :c:type:`HWND`, :c:type:`WPARAM`, or :c:type:`DWORD`.  Some
-useful structures like :c:type:`MSG` or :c:type:`RECT` are also defined.
+The :mod:`!ctypes.wintypes` module provides quite some other Windows specific
+data types, for example :c:type:`!HWND`, :c:type:`!WPARAM`, or :c:type:`!DWORD`.
+Some useful structures like :c:type:`!MSG` or :c:type:`!RECT` are also defined.
 
 
 .. _ctypes-structured-data-types:
diff --git a/Doc/library/curses.rst b/Doc/library/curses.rst
index cf208f3ba0db36..9b8a98f05f7cbb 100644
--- a/Doc/library/curses.rst
+++ b/Doc/library/curses.rst
@@ -641,7 +641,8 @@ The module :mod:`curses` defines the following functions:
 
 .. function:: update_lines_cols()
 
-   Update :envvar:`LINES` and :envvar:`COLS`. Useful for detecting manual screen resize.
+   Update the :const:`LINES` and :const:`COLS` module variables.
+   Useful for detecting manual screen resize.
 
    .. versionadded:: 3.5
 
@@ -1342,10 +1343,27 @@ The :mod:`curses` module defines the following data members:
 .. data:: COLORS
 
    The maximum number of colors the terminal can support.
+   It is defined only after the call to :func:`start_color`.
 
 .. data:: COLOR_PAIRS
 
    The maximum number of color pairs the terminal can support.
+   It is defined only after the call to :func:`start_color`.
+
+.. data:: COLS
+
+   The width of the screen, i.e., the number of columns.
+   It is defined only after the call to :func:`initscr`.
+   Updated by :func:`update_lines_cols`, :func:`resizeterm` and
+   :func:`resize_term`.
+
+.. data:: LINES
+
+   The height of the screen, i.e., the number of lines.
+   It is defined only after the call to :func:`initscr`.
+   Updated by :func:`update_lines_cols`, :func:`resizeterm` and
+   :func:`resize_term`.
+
 
 Some constants are available to specify character cell attributes.
 The exact constants available are system dependent.
@@ -1630,6 +1648,8 @@ keys); also, the following keypad mappings are standard:
 | :kbd:`Page Down` | KEY_NPAGE |
 +------------------+-----------+
 
+.. _curses-acs-codes:
+
 The following table lists characters from the alternate character set. These are
 inherited from the VT100 terminal, and will generally be  available on software
 emulations such as X terminals.  When there is no graphic available, curses
@@ -1751,9 +1771,9 @@ The following table lists mouse button constants used by :meth:`getmouse`:
 | .. data:: BUTTON_ALT             | Control was down during button state change |
 +----------------------------------+---------------------------------------------+
 
-   .. versionchanged:: 3.10
-      The ``BUTTON5_*`` constants are now exposed if they are provided by the
-      underlying curses library.
+.. versionchanged:: 3.10
+   The ``BUTTON5_*`` constants are now exposed if they are provided by the
+   underlying curses library.
 
 The following table lists the predefined colors:
 
diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
index a5b20149921042..bbbbcb00d8fef8 100644
--- a/Doc/library/dataclasses.rst
+++ b/Doc/library/dataclasses.rst
@@ -319,13 +319,11 @@ Module contents
    module-level method (see below).  Users should never instantiate a
    :class:`Field` object directly.  Its documented attributes are:
 
-     - ``name``: The name of the field.
-
-     - ``type``: The type of the field.
-
-     - ``default``, ``default_factory``, ``init``, ``repr``, ``hash``,
-       ``compare``, ``metadata``, and ``kw_only`` have the identical
-       meaning and values as they do in the :func:`field` function.
+   - ``name``: The name of the field.
+   - ``type``: The type of the field.
+   - ``default``, ``default_factory``, ``init``, ``repr``, ``hash``,
+     ``compare``, ``metadata``, and ``kw_only`` have the identical
+     meaning and values as they do in the :func:`field` function.
 
    Other attributes may exist, but they are private and must not be
    inspected or relied on.
@@ -456,6 +454,8 @@ Module contents
    ``replace()`` (or similarly named) method which handles instance
    copying.
 
+   Dataclass instances are also supported by generic function :func:`copy.replace`.
+
 .. function:: is_dataclass(obj)
 
    Return ``True`` if its parameter is a dataclass or an instance of one,
@@ -609,7 +609,7 @@ methods will raise a :exc:`FrozenInstanceError` when invoked.
 
 There is a tiny performance penalty when using ``frozen=True``:
 :meth:`~object.__init__` cannot use simple assignment to initialize fields, and
-must use :meth:`~object.__setattr__`.
+must use :meth:`!object.__setattr__`.
 
 Inheritance
 -----------
@@ -738,7 +738,7 @@ for ``x`` when creating a class instance will share the same copy
 of ``x``.  Because dataclasses just use normal Python class
 creation they also share this behavior.  There is no general way
 for Data Classes to detect this condition.  Instead, the
-:func:`dataclass` decorator will raise a :exc:`TypeError` if it
+:func:`dataclass` decorator will raise a :exc:`ValueError` if it
 detects an unhashable default parameter.  The assumption is that if
 a value is unhashable, it is mutable.  This is a partial solution,
 but it does protect against many common errors.
diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index bed19ad145a20c..1bab1fb9bd9464 100644
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -19,6 +19,10 @@ The :mod:`datetime` module supplies classes for manipulating dates and times.
 While date and time arithmetic is supported, the focus of the implementation is
 on efficient attribute extraction for output formatting and manipulation.
 
+.. tip::
+
+    Skip to :ref:`the format codes <format-codes>`.
+
 .. seealso::
 
    Module :mod:`calendar`
@@ -33,6 +37,11 @@ on efficient attribute extraction for output formatting and manipulation.
    Package `dateutil <https://dateutil.readthedocs.io/en/stable/>`_
       Third-party library with expanded time zone and parsing support.
 
+   Package `DateType <https://pypi.org/project/datetype/>`_
+      Third-party library that introduces distinct static types to e.g. allow
+      :term:`static type checkers <static type checker>`
+      to differentiate between naive and aware datetimes.
+
 .. _datetime-naive-aware:
 
 Aware and Naive Objects
@@ -644,6 +653,9 @@ Instance methods:
        >>> d.replace(day=26)
        datetime.date(2002, 12, 26)
 
+   :class:`date` objects are also supported by generic function
+   :func:`copy.replace`.
+
 
 .. method:: date.timetuple()
 
@@ -1243,6 +1255,9 @@ Instance methods:
    ``tzinfo=None`` can be specified to create a naive datetime from an aware
    datetime with no conversion of date and time data.
 
+   :class:`datetime` objects are also supported by generic function
+   :func:`copy.replace`.
+
    .. versionadded:: 3.6
       Added the ``fold`` argument.
 
@@ -1819,6 +1834,9 @@ Instance methods:
    ``tzinfo=None`` can be specified to create a naive :class:`.time` from an
    aware :class:`.time`, without conversion of the time data.
 
+   :class:`time` objects are also supported by generic function
+   :func:`copy.replace`.
+
    .. versionadded:: 3.6
       Added the ``fold`` argument.
 
@@ -2322,6 +2340,8 @@ versus :meth:`strptime`:
 +----------------+--------------------------------------------------------+------------------------------------------------------------------------------+
 
 
+   .. _format-codes:
+
 :meth:`strftime` and :meth:`strptime` Format Codes
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/Doc/library/dbm.rst b/Doc/library/dbm.rst
index 2be499337a2a15..766847b971b645 100644
--- a/Doc/library/dbm.rst
+++ b/Doc/library/dbm.rst
@@ -245,6 +245,13 @@ supported.
 
       Close the ``gdbm`` database.
 
+   .. method:: gdbm.clear()
+
+      Remove all items from the ``gdbm`` database.
+
+      .. versionadded:: 3.13
+
+
 :mod:`dbm.ndbm` --- Interface based on ndbm
 -------------------------------------------
 
@@ -313,6 +320,12 @@ to locate the appropriate header file to simplify building this module.
 
       Close the ``ndbm`` database.
 
+   .. method:: ndbm.clear()
+
+      Remove all items from the ``ndbm`` database.
+
+      .. versionadded:: 3.13
+
 
 :mod:`dbm.dumb` --- Portable DBM implementation
 -----------------------------------------------
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst
index 0b4a4973cb4da0..fb8bbf72adf268 100644
--- a/Doc/library/decimal.rst
+++ b/Doc/library/decimal.rst
@@ -743,12 +743,23 @@ Decimal objects
 
    .. method:: normalize(context=None)
 
-      Normalize the number by stripping the rightmost trailing zeros and
-      converting any result equal to ``Decimal('0')`` to
-      ``Decimal('0e0')``. Used for producing canonical values for attributes
-      of an equivalence class. For example, ``Decimal('32.100')`` and
-      ``Decimal('0.321000e+2')`` both normalize to the equivalent value
-      ``Decimal('32.1')``.
+      Used for producing canonical values of an equivalence
+      class within either the current context or the specified context.
+
+      This has the same semantics as the unary plus operation, except that if
+      the final result is finite it is reduced to its simplest form, with all
+      trailing zeros removed and its sign preserved. That is, while the
+      coefficient is non-zero and a multiple of ten the coefficient is divided
+      by ten and the exponent is incremented by 1. Otherwise (the coefficient is
+      zero) the exponent is set to 0. In all cases the sign is unchanged.
+
+      For example, ``Decimal('32.100')`` and ``Decimal('0.321000e+2')`` both
+      normalize to the equivalent value ``Decimal('32.1')``.
+
+      Note that rounding is applied *before* reducing to simplest form.
+
+      In the latest versions of the specification, this operation is also known
+      as ``reduce``.
 
    .. method:: number_class(context=None)
 
@@ -1385,10 +1396,10 @@ In addition to the three supplied contexts, new contexts can be created with the
       With three arguments, compute ``(x**y) % modulo``.  For the three argument
       form, the following restrictions on the arguments hold:
 
-         - all three arguments must be integral
-         - ``y`` must be nonnegative
-         - at least one of ``x`` or ``y`` must be nonzero
-         - ``modulo`` must be nonzero and have at most 'precision' digits
+      - all three arguments must be integral
+      - ``y`` must be nonnegative
+      - at least one of ``x`` or ``y`` must be nonzero
+      - ``modulo`` must be nonzero and have at most 'precision' digits
 
       The value resulting from ``Context.power(x, y, modulo)`` is
       equal to the value that would be obtained by computing ``(x**y)
@@ -1497,7 +1508,7 @@ are also included in the pure Python version for compatibility.
 
    The value is ``True``.  Deprecated, because Python now always has threads.
 
-.. deprecated:: 3.9
+   .. deprecated:: 3.9
 
 .. data:: HAVE_CONTEXTVAR
 
@@ -2078,6 +2089,26 @@ representative:
    >>> [v.normalize() for v in values]
    [Decimal('2E+2'), Decimal('2E+2'), Decimal('2E+2'), Decimal('2E+2')]
 
+Q. When does rounding occur in a computation?
+
+A. It occurs *after* the computation.  The philosophy of the decimal
+specification is that numbers are considered exact and are created
+independent of the current context.  They can even have greater
+precision than current context.  Computations process with those
+exact inputs and then rounding (or other context operations) is
+applied to the *result* of the computation::
+
+   >>> getcontext().prec = 5
+   >>> pi = Decimal('3.1415926535')   # More than 5 digits
+   >>> pi                             # All digits are retained
+   Decimal('3.1415926535')
+   >>> pi + 0                         # Rounded after an addition
+   Decimal('3.1416')
+   >>> pi - Decimal('0.00005')        # Subtract unrounded numbers, then round
+   Decimal('3.1415')
+   >>> pi + 0 - Decimal('0.00005').   # Intermediate values are rounded
+   Decimal('3.1416')
+
 Q. Some decimal values always print with exponential notation.  Is there a way
 to get a non-exponential representation?
 
diff --git a/Doc/library/development.rst b/Doc/library/development.rst
index 9edce758688e2d..b1979b921e7d5f 100644
--- a/Doc/library/development.rst
+++ b/Doc/library/development.rst
@@ -8,8 +8,7 @@ The modules described in this chapter help you write software.  For example, the
 :mod:`pydoc` module takes a module and generates documentation based on the
 module's contents.  The :mod:`doctest` and :mod:`unittest` modules contains
 frameworks for writing unit tests that automatically exercise code and verify
-that the expected output is produced.  :program:`2to3` can translate Python 2.x
-source code into valid Python 3.x code.
+that the expected output is produced.
 
 The list of modules described in this chapter is:
 
@@ -23,5 +22,4 @@ The list of modules described in this chapter is:
    unittest.rst
    unittest.mock.rst
    unittest.mock-examples.rst
-   2to3.rst
    test.rst
diff --git a/Doc/library/devmode.rst b/Doc/library/devmode.rst
index 977735990ffe92..5b8a9bd1908456 100644
--- a/Doc/library/devmode.rst
+++ b/Doc/library/devmode.rst
@@ -16,7 +16,7 @@ setting the :envvar:`PYTHONDEVMODE` environment variable to ``1``.
 See also :ref:`Python debug build <debug-build>`.
 
 Effects of the Python Development Mode
-======================================
+--------------------------------------
 
 Enabling the Python Development Mode is similar to the following command, but
 with additional effects described below::
@@ -59,8 +59,9 @@ Effects of the Python Development Mode:
   ``default``.
 
 * Call :func:`faulthandler.enable` at Python startup to install handlers for
-  the :const:`SIGSEGV`, :const:`SIGFPE`, :const:`SIGABRT`, :const:`SIGBUS` and
-  :const:`SIGILL` signals to dump the Python traceback on a crash.
+  the :const:`~signal.SIGSEGV`, :const:`~signal.SIGFPE`,
+  :const:`~signal.SIGABRT`, :const:`~signal.SIGBUS` and
+  :const:`~signal.SIGILL` signals to dump the Python traceback on a crash.
 
   It behaves as if the :option:`-X faulthandler <-X>` command line option is
   used or if the :envvar:`PYTHONFAULTHANDLER` environment variable is set to
@@ -81,7 +82,7 @@ Effects of the Python Development Mode:
   ignored for empty strings.
 
 * The :class:`io.IOBase` destructor logs ``close()`` exceptions.
-* Set the :attr:`~sys.flags.dev_mode` attribute of :attr:`sys.flags` to
+* Set the :attr:`~sys.flags.dev_mode` attribute of :data:`sys.flags` to
   ``True``.
 
 The Python Development Mode does not enable the :mod:`tracemalloc` module by
@@ -107,7 +108,7 @@ value can be read from :data:`sys.flags.dev_mode <sys.flags>`.
 
 
 ResourceWarning Example
-=======================
+-----------------------
 
 Example of a script counting the number of lines of the text file specified in
 the command line::
@@ -171,7 +172,7 @@ application more deterministic and more reliable.
 
 
 Bad file descriptor error example
-=================================
+---------------------------------
 
 Script displaying the first line of itself::
 
@@ -198,7 +199,7 @@ descriptor" error when finalizing the file object:
 
 .. code-block:: shell-session
 
-    $ python script.py
+    $ python -X dev script.py
     import os
     script.py:10: ResourceWarning: unclosed file <_io.TextIOWrapper name='script.py' mode='r' encoding='UTF-8'>
       main()
diff --git a/Doc/library/dialog.rst b/Doc/library/dialog.rst
index 53f98c1018988f..191e0da12103fa 100644
--- a/Doc/library/dialog.rst
+++ b/Doc/library/dialog.rst
@@ -27,15 +27,15 @@ functions for creating simple modal dialogs to get a value from the user.
 
    The base class for custom dialogs.
 
-    .. method:: body(master)
+   .. method:: body(master)
 
-       Override to construct the dialog's interface and return the widget that
-       should have initial focus.
+      Override to construct the dialog's interface and return the widget that
+      should have initial focus.
 
-    .. method:: buttonbox()
+   .. method:: buttonbox()
 
-       Default behaviour adds OK and Cancel buttons. Override for custom button
-       layouts.
+      Default behaviour adds OK and Cancel buttons. Override for custom button
+      layouts.
 
 
 
diff --git a/Doc/library/difflib.rst b/Doc/library/difflib.rst
index 5ee1f4a02c6816..9abf19557f989c 100644
--- a/Doc/library/difflib.rst
+++ b/Doc/library/difflib.rst
@@ -171,9 +171,12 @@ diffs. For comparing directories and files, see also, the :mod:`filecmp` module.
    expressed in the ISO 8601 format. If not specified, the
    strings default to blanks.
 
+      >>> import sys
+      >>> from difflib import *
       >>> s1 = ['bacon\n', 'eggs\n', 'ham\n', 'guido\n']
       >>> s2 = ['python\n', 'eggy\n', 'hamster\n', 'guido\n']
-      >>> sys.stdout.writelines(context_diff(s1, s2, fromfile='before.py', tofile='after.py'))
+      >>> sys.stdout.writelines(context_diff(s1, s2, fromfile='before.py',
+      ...                        tofile='after.py'))
       *** before.py
       --- after.py
       ***************
@@ -294,13 +297,12 @@ diffs. For comparing directories and files, see also, the :mod:`filecmp` module.
    For inputs that do not have trailing newlines, set the *lineterm* argument to
    ``""`` so that the output will be uniformly newline free.
 
-   The context diff format normally has a header for filenames and modification
+   The unified diff format normally has a header for filenames and modification
    times.  Any or all of these may be specified using strings for *fromfile*,
    *tofile*, *fromfiledate*, and *tofiledate*.  The modification times are normally
    expressed in the ISO 8601 format. If not specified, the
    strings default to blanks.
 
-
       >>> s1 = ['bacon\n', 'eggs\n', 'ham\n', 'guido\n']
       >>> s2 = ['python\n', 'eggy\n', 'hamster\n', 'guido\n']
       >>> sys.stdout.writelines(unified_diff(s1, s2, fromfile='before.py', tofile='after.py'))
@@ -570,8 +572,8 @@ The :class:`SequenceMatcher` class has this constructor:
 
 The three methods that return the ratio of matching to total characters can give
 different results due to differing levels of approximation, although
-:meth:`quick_ratio` and :meth:`real_quick_ratio` are always at least as large as
-:meth:`ratio`:
+:meth:`~SequenceMatcher.quick_ratio` and :meth:`~SequenceMatcher.real_quick_ratio`
+are always at least as large as :meth:`~SequenceMatcher.ratio`:
 
    >>> s = SequenceMatcher(None, "abcd", "bcde")
    >>> s.ratio()
@@ -593,15 +595,15 @@ This example compares two strings, considering blanks to be "junk":
    ...                     "private Thread currentThread;",
    ...                     "private volatile Thread currentThread;")
 
-:meth:`ratio` returns a float in [0, 1], measuring the similarity of the
-sequences.  As a rule of thumb, a :meth:`ratio` value over 0.6 means the
+:meth:`~SequenceMatcher.ratio` returns a float in [0, 1], measuring the similarity of the
+sequences.  As a rule of thumb, a :meth:`~SequenceMatcher.ratio` value over 0.6 means the
 sequences are close matches:
 
    >>> print(round(s.ratio(), 3))
    0.866
 
 If you're only interested in where the sequences match,
-:meth:`get_matching_blocks` is handy:
+:meth:`~SequenceMatcher.get_matching_blocks` is handy:
 
    >>> for block in s.get_matching_blocks():
    ...     print("a[%d] and b[%d] match for %d elements" % block)
@@ -609,12 +611,12 @@ If you're only interested in where the sequences match,
    a[8] and b[17] match for 21 elements
    a[29] and b[38] match for 0 elements
 
-Note that the last tuple returned by :meth:`get_matching_blocks` is always a
-dummy, ``(len(a), len(b), 0)``, and this is the only case in which the last
+Note that the last tuple returned by :meth:`~SequenceMatcher.get_matching_blocks`
+is always a dummy, ``(len(a), len(b), 0)``, and this is the only case in which the last
 tuple element (number of elements matched) is ``0``.
 
 If you want to know how to change the first sequence into the second, use
-:meth:`get_opcodes`:
+:meth:`~SequenceMatcher.get_opcodes`:
 
    >>> for opcode in s.get_opcodes():
    ...     print("%6s a[%d:%d] b[%d:%d]" % opcode)
@@ -689,7 +691,7 @@ Differ Example
 
 This example compares two texts. First we set up the texts, sequences of
 individual single-line strings ending with newlines (such sequences can also be
-obtained from the :meth:`~io.BaseIO.readlines` method of file-like objects):
+obtained from the :meth:`~io.IOBase.readlines` method of file-like objects):
 
    >>> text1 = '''  1. Beautiful is better than ugly.
    ...   2. Explicit is better than implicit.
diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
index 248743b8fa0a87..0d93bc9f5da774 100644
--- a/Doc/library/dis.rst
+++ b/Doc/library/dis.rst
@@ -42,27 +42,70 @@ interpreter.
       bytecode to specialize it for different runtime conditions. The
       adaptive bytecode can be shown by passing ``adaptive=True``.
 
+   .. versionchanged:: 3.12
+      The argument of a jump is the offset of the target instruction relative
+      to the instruction that appears immediately after the jump instruction's
+      :opcode:`CACHE` entries.
+
+      As a consequence, the presence of the :opcode:`CACHE` instructions is
+      transparent for forward jumps but needs to be taken into account when
+      reasoning about backward jumps.
+
+   .. versionchanged:: 3.13
+      The output shows logical labels rather than instruction offsets
+      for jump targets and exception handlers. The ``-O`` command line
+      option and the ``show_offsets`` argument were added.
 
-Example: Given the function :func:`myfunc`::
+Example: Given the function :func:`!myfunc`::
 
    def myfunc(alist):
        return len(alist)
 
 the following command can be used to display the disassembly of
-:func:`myfunc`:
+:func:`!myfunc`:
 
 .. doctest::
 
    >>> dis.dis(myfunc)
-     2           0 RESUME                   0
+     2           RESUME                   0
    <BLANKLINE>
-     3           2 LOAD_GLOBAL              1 (NULL + len)
-                12 LOAD_FAST                0 (alist)
-                14 CALL                     1
-                22 RETURN_VALUE
+     3           LOAD_GLOBAL              1 (len + NULL)
+                 LOAD_FAST                0 (alist)
+                 CALL                     1
+                 RETURN_VALUE
 
 (The "2" is a line number).
 
+.. _dis-cli:
+
+Command-line interface
+----------------------
+
+The :mod:`dis` module can be invoked as a script from the command line:
+
+.. code-block:: sh
+
+   python -m dis [-h] [-C] [-O] [infile]
+
+The following options are accepted:
+
+.. program:: dis
+
+.. cmdoption:: -h, --help
+
+   Display usage and exit.
+
+.. cmdoption:: -C, --show-caches
+
+   Show inline caches.
+
+.. cmdoption:: -O, --show-offsets
+
+   Show offsets of instructions.
+
+If :file:`infile` is specified, its disassembled code will be written to stdout.
+Otherwise, disassembly is performed on compiled source code recieved from stdin.
+
 Bytecode analysis
 -----------------
 
@@ -73,7 +116,7 @@ The bytecode analysis API allows pieces of Python code to be wrapped in a
 code.
 
 .. class:: Bytecode(x, *, first_line=None, current_offset=None,\
-                    show_caches=False, adaptive=False)
+                    show_caches=False, adaptive=False, show_offsets=False)
 
    Analyse the bytecode corresponding to a function, generator, asynchronous
    generator, coroutine, method, string of source code, or a code object (as
@@ -98,6 +141,9 @@ code.
    If *adaptive* is ``True``, :meth:`.dis` will display specialized bytecode
    that may be different from the original bytecode.
 
+   If *show_offsets* is ``True``, :meth:`.dis` will include instruction
+   offsets in the output.
+
    .. classmethod:: from_traceback(tb, *, show_caches=False)
 
       Construct a :class:`Bytecode` instance from the given traceback, setting
@@ -188,9 +234,9 @@ operation is being performed, so the intermediate analysis object isn't useful:
    For a module, it disassembles all functions. For a class, it disassembles
    all methods (including class and static methods). For a code object or
    sequence of raw bytecode, it prints one line per bytecode instruction.
-   It also recursively disassembles nested code objects (the code of
-   comprehensions, generator expressions and nested functions, and the code
-   used for building nested classes).
+   It also recursively disassembles nested code objects. These can include
+   generator expressions, nested functions, the bodies of nested classes,
+   and the code objects used for :ref:`annotation scopes <annotation-scopes>`.
    Strings are first compiled to code objects with the :func:`compile`
    built-in function before being disassembled.  If no object is provided, this
    function disassembles the last traceback.
@@ -220,7 +266,8 @@ operation is being performed, so the intermediate analysis object isn't useful:
       Added the *show_caches* and *adaptive* parameters.
 
 
-.. function:: distb(tb=None, *, file=None, show_caches=False, adaptive=False)
+.. function:: distb(tb=None, *, file=None, show_caches=False, adaptive=False,
+                    show_offset=False)
 
    Disassemble the top-of-stack function of a traceback, using the last
    traceback if none was passed.  The instruction causing the exception is
@@ -235,9 +282,12 @@ operation is being performed, so the intermediate analysis object isn't useful:
    .. versionchanged:: 3.11
       Added the *show_caches* and *adaptive* parameters.
 
+   .. versionchanged:: 3.13
+      Added the *show_offsets* parameter.
 
 .. function:: disassemble(code, lasti=-1, *, file=None, show_caches=False, adaptive=False)
-              disco(code, lasti=-1, *, file=None, show_caches=False, adaptive=False)
+              disco(code, lasti=-1, *, file=None, show_caches=False, adaptive=False,
+              show_offsets=False)
 
    Disassemble a code object, indicating the last instruction if *lasti* was
    provided.  The output is divided in the following columns:
@@ -262,6 +312,8 @@ operation is being performed, so the intermediate analysis object isn't useful:
    .. versionchanged:: 3.11
       Added the *show_caches* and *adaptive* parameters.
 
+   .. versionchanged:: 3.13
+      Added the *show_offsets* parameter.
 
 .. function:: get_instructions(x, *, first_line=None, show_caches=False, adaptive=False)
 
@@ -294,8 +346,12 @@ operation is being performed, so the intermediate analysis object isn't useful:
       Line numbers can be decreasing. Before, they were always increasing.
 
    .. versionchanged:: 3.10
-      The :pep:`626` ``co_lines`` method is used instead of the ``co_firstlineno``
-      and ``co_lnotab`` attributes of the code object.
+      The :pep:`626` ``co_lines`` method is used instead of the
+      :attr:`~codeobject.co_firstlineno` and :attr:`~codeobject.co_lnotab`
+      attributes of the code object.
+
+   .. versionchanged:: 3.13
+      Line numbers can be ``None`` for bytecode that does not map to source lines.
 
 
 .. function:: findlabels(code)
@@ -318,6 +374,12 @@ operation is being performed, so the intermediate analysis object isn't useful:
    .. versionchanged:: 3.8
       Added *jump* parameter.
 
+   .. versionchanged:: 3.13
+      If ``oparg`` is omitted (or ``None``), the stack effect is now returned
+      for ``oparg=0``. Previously this was an error for opcodes that use their
+      arg. It is also no longer an error to pass an integer ``oparg`` when
+      the ``opcode`` does not use it; the ``oparg`` in this case is ignored.
+
 
 .. _bytecodes:
 
@@ -342,10 +404,25 @@ details of bytecode instructions as :class:`Instruction` instances:
       human readable name for operation
 
 
+   .. data:: baseopcode
+
+      numeric code for the base operation if operation is specialized;
+      otherwise equal to :data:`opcode`
+
+
+   .. data:: baseopname
+
+      human readable name for the base operation if operation is specialized;
+      otherwise equal to :data:`opname`
+
+
    .. data:: arg
 
       numeric argument to operation (if any), otherwise ``None``
 
+   .. data:: oparg
+
+      alias for :data:`arg`
 
    .. data:: argval
 
@@ -363,9 +440,30 @@ details of bytecode instructions as :class:`Instruction` instances:
       start index of operation within bytecode sequence
 
 
+   .. data:: start_offset
+
+      start index of operation within bytecode sequence, including prefixed
+      ``EXTENDED_ARG`` operations if present; otherwise equal to :data:`offset`
+
+
+   .. data:: cache_offset
+
+      start index of the cache entries following the operation
+
+
+   .. data:: end_offset
+
+      end index of the cache entries following the operation
+
+
    .. data:: starts_line
 
-      line started by this opcode (if any), otherwise ``None``
+      ``True`` if this opcode starts a source line, otherwise ``False``
+
+
+   .. data:: line_number
+
+      source line number associated with this opcode (if any), otherwise ``None``
 
 
    .. data:: is_jump_target
@@ -373,6 +471,12 @@ details of bytecode instructions as :class:`Instruction` instances:
       ``True`` if other code jumps to here, otherwise ``False``
 
 
+   .. data:: jump_target
+
+      bytecode index of the jump target if this is a jump operation,
+      otherwise ``None``
+
+
    .. data:: positions
 
       :class:`dis.Positions` object holding the
@@ -384,6 +488,14 @@ details of bytecode instructions as :class:`Instruction` instances:
 
       Field ``positions`` is added.
 
+   .. versionchanged:: 3.13
+
+      Changed field ``starts_line``.
+
+      Added fields ``start_offset``, ``cache_offset``, ``end_offset``,
+      ``baseopname``, ``baseopcode``, ``jump_target``, ``oparg``, and
+      ``line_number``.
+
 
 .. class:: Positions
 
@@ -428,6 +540,14 @@ operations on it as if it was a Python list. The top of the stack corresponds to
    .. versionadded:: 3.12
 
 
+.. opcode:: END_SEND
+
+   Implements ``del STACK[-2]``.
+   Used to clean up when a generator exits.
+
+   .. versionadded:: 3.12
+
+
 .. opcode:: COPY (i)
 
    Push the i-th item to the top of the stack without removing it from its original
@@ -481,6 +601,9 @@ result back on the stack.
 
    Implements ``STACK[-1] = not STACK[-1]``.
 
+   .. versionchanged:: 3.13
+      This instruction now requires an exact :class:`bool` operand.
+
 
 .. opcode:: UNARY_INVERT
 
@@ -500,6 +623,13 @@ result back on the stack.
    .. versionadded:: 3.5
 
 
+.. opcode:: TO_BOOL
+
+   Implements ``STACK[-1] = bool(STACK[-1])``.
+
+   .. versionadded:: 3.13
+
+
 **Binary and in-place operations**
 
 Binary operations remove the top two items from the stack (``STACK[-1]`` and
@@ -528,7 +658,7 @@ not have to be) the original ``STACK[-2]``.
 
       key = STACK.pop()
       container = STACK.pop()
-      STACK.append(container[index])
+      STACK.append(container[key])
 
 
 .. opcode:: STORE_SUBSCR
@@ -622,8 +752,8 @@ not have to be) the original ``STACK[-2]``.
 
    .. versionadded:: 3.8
 
-    .. versionchanged:: 3.11
-       Exception representation on the stack now consist of one, not three, items.
+   .. versionchanged:: 3.11
+      Exception representation on the stack now consist of one, not three, items.
 
 
 .. opcode:: CLEANUP_THROW
@@ -712,6 +842,9 @@ iterations of the loop.
    .. versionchanged:: 3.12
       oparg set to be the exception block depth, for efficient closing of generators.
 
+   .. versionchanged:: 3.13
+      oparg is ``1`` if this instruction is part of a yield-from or await, and ``0``
+      otherwise.
 
 .. opcode:: SETUP_ANNOTATIONS
 
@@ -733,8 +866,8 @@ iterations of the loop.
 .. opcode:: RERAISE
 
    Re-raises the exception currently on top of the stack. If oparg is non-zero,
-   pops an additional value from the stack which is used to set ``f_lasti``
-   of the current frame.
+   pops an additional value from the stack which is used to set
+   :attr:`~frame.f_lasti` of the current frame.
 
    .. versionadded:: 3.9
 
@@ -793,7 +926,7 @@ iterations of the loop.
 
 .. opcode:: LOAD_BUILD_CLASS
 
-   Pushes :func:`builtins.__build_class__` onto the stack.  It is later called
+   Pushes :func:`!builtins.__build_class__` onto the stack.  It is later called
    to construct a class.
 
 
@@ -818,7 +951,7 @@ iterations of the loop.
 .. opcode:: MATCH_MAPPING
 
    If ``STACK[-1]`` is an instance of :class:`collections.abc.Mapping` (or, more
-   technically: if it has the :const:`Py_TPFLAGS_MAPPING` flag set in its
+   technically: if it has the :c:macro:`Py_TPFLAGS_MAPPING` flag set in its
    :c:member:`~PyTypeObject.tp_flags`), push ``True`` onto the stack.  Otherwise,
    push ``False``.
 
@@ -829,7 +962,7 @@ iterations of the loop.
 
    If ``STACK[-1]`` is an instance of :class:`collections.abc.Sequence` and is *not* an instance
    of :class:`str`/:class:`bytes`/:class:`bytearray` (or, more technically: if it has
-   the :const:`Py_TPFLAGS_SEQUENCE` flag set in its :c:member:`~PyTypeObject.tp_flags`),
+   the :c:macro:`Py_TPFLAGS_SEQUENCE` flag set in its :c:member:`~PyTypeObject.tp_flags`),
    push ``True`` onto the stack.  Otherwise, push ``False``.
 
    .. versionadded:: 3.10
@@ -851,22 +984,23 @@ iterations of the loop.
 .. opcode:: STORE_NAME (namei)
 
    Implements ``name = STACK.pop()``. *namei* is the index of *name* in the attribute
-   :attr:`co_names` of the code object. The compiler tries to use
-   :opcode:`STORE_FAST` or :opcode:`STORE_GLOBAL` if possible.
+   :attr:`~codeobject.co_names` of the :ref:`code object <code-objects>`.
+   The compiler tries to use :opcode:`STORE_FAST` or :opcode:`STORE_GLOBAL` if possible.
 
 
 .. opcode:: DELETE_NAME (namei)
 
-   Implements ``del name``, where *namei* is the index into :attr:`co_names`
-   attribute of the code object.
+   Implements ``del name``, where *namei* is the index into :attr:`~codeobject.co_names`
+   attribute of the :ref:`code object <code-objects>`.
 
 
 .. opcode:: UNPACK_SEQUENCE (count)
 
    Unpacks ``STACK[-1]`` into *count* individual values, which are put onto the stack
-   right-to-left::
+   right-to-left. Require there to be exactly *count* values.::
 
-      STACK.extend(STACK.pop()[:count:-1])
+      assert(len(STACK[-1]) == count)
+      STACK.extend(STACK.pop()[:-count-1:-1])
 
 
 .. opcode:: UNPACK_EX (counts)
@@ -896,7 +1030,8 @@ iterations of the loop.
       value = STACK.pop()
       obj.name = value
 
-   where *namei* is the index of name in :attr:`co_names`.
+   where *namei* is the index of name in :attr:`~codeobject.co_names` of the
+   :ref:`code object <code-objects>`.
 
 .. opcode:: DELETE_ATTR (namei)
 
@@ -905,7 +1040,8 @@ iterations of the loop.
       obj = STACK.pop()
       del obj.name
 
-   where *namei* is the index of name into :attr:`co_names`.
+   where *namei* is the index of name into :attr:`~codeobject.co_names` of the
+   :ref:`code object <code-objects>`.
 
 
 .. opcode:: STORE_GLOBAL (namei)
@@ -926,6 +1062,27 @@ iterations of the loop.
 .. opcode:: LOAD_NAME (namei)
 
    Pushes the value associated with ``co_names[namei]`` onto the stack.
+   The name is looked up within the locals, then the globals, then the builtins.
+
+
+.. opcode:: LOAD_LOCALS
+
+   Pushes a reference to the locals dictionary onto the stack.  This is used
+   to prepare namespace dictionaries for :opcode:`LOAD_FROM_DICT_OR_DEREF`
+   and :opcode:`LOAD_FROM_DICT_OR_GLOBALS`.
+
+   .. versionadded:: 3.12
+
+
+.. opcode:: LOAD_FROM_DICT_OR_GLOBALS (i)
+
+   Pops a mapping off the stack and looks up the value for ``co_names[namei]``.
+   If the name is not found there, looks it up in the globals and then the builtins,
+   similar to :opcode:`LOAD_GLOBAL`.
+   This is used for loading global variables in
+   :ref:`annotation scopes <annotation-scopes>` within class bodies.
+
+   .. versionadded:: 3.12
 
 
 .. opcode:: BUILD_TUPLE (count)
@@ -1029,7 +1186,8 @@ iterations of the loop.
    This bytecode distinguishes two cases: if ``STACK[-1]`` has a method with the
    correct name, the bytecode pushes the unbound method and ``STACK[-1]``.
    ``STACK[-1]`` will be used as the first argument (``self``) by :opcode:`CALL`
-   when calling the unbound method. Otherwise, ``NULL`` and the object returned by
+   or :opcode:`CALL_KW` when calling the unbound method.
+   Otherwise, ``NULL`` and the object returned by
    the attribute lookup are pushed.
 
    .. versionchanged:: 3.12
@@ -1039,15 +1197,21 @@ iterations of the loop.
 
 .. opcode:: LOAD_SUPER_ATTR (namei)
 
-   This opcode implements :func:`super` (e.g. ``super().method()`` and
-   ``super().attr``). It works the same as :opcode:`LOAD_ATTR`, except that
-   ``namei`` is shifted left by 2 bits instead of 1, and instead of expecting a
-   single receiver on the stack, it expects three objects (from top of stack
-   down): ``self`` (the first argument to the current method), ``cls`` (the
-   class within which the current method was defined), and the global ``super``.
+   This opcode implements :func:`super`, both in its zero-argument and
+   two-argument forms (e.g. ``super().method()``, ``super().attr`` and
+   ``super(cls, self).method()``, ``super(cls, self).attr``).
+
+   It pops three values from the stack (from top of stack down):
+   - ``self``: the first argument to the current method
+   -  ``cls``: the class within which the current method was defined
+   -  the global ``super``
+
+   With respect to its argument, it works similarly to :opcode:`LOAD_ATTR`,
+   except that ``namei`` is shifted left by 2 bits instead of 1.
 
    The low bit of ``namei`` signals to attempt a method load, as with
-   :opcode:`LOAD_ATTR`.
+   :opcode:`LOAD_ATTR`, which results in pushing ``None`` and the loaded method.
+   When it is unset a single value is pushed to the stack.
 
    The second-low bit of ``namei``, if set, means that this was a two-argument
    call to :func:`super` (unset means zero-argument).
@@ -1058,7 +1222,12 @@ iterations of the loop.
 .. opcode:: COMPARE_OP (opname)
 
    Performs a Boolean operation.  The operation name can be found in
-   ``cmp_op[opname]``.
+   ``cmp_op[opname >> 5]``. If the fifth-lowest bit of ``opname`` is set
+   (``opname & 16``), the result should be coerced to ``bool``.
+
+   .. versionchanged:: 3.13
+      The fifth-lowest bit of the oparg now indicates a forced conversion to
+      :class:`bool`.
 
 
 .. opcode:: IS_OP (invert)
@@ -1122,6 +1291,9 @@ iterations of the loop.
    .. versionchanged:: 3.12
       This is no longer a pseudo-instruction.
 
+   .. versionchanged:: 3.13
+      This instruction now requires an exact :class:`bool` operand.
+
 .. opcode:: POP_JUMP_IF_FALSE (delta)
 
    If ``STACK[-1]`` is false, increments the bytecode counter by *delta*.
@@ -1135,6 +1307,9 @@ iterations of the loop.
    .. versionchanged:: 3.12
       This is no longer a pseudo-instruction.
 
+   .. versionchanged:: 3.13
+      This instruction now requires an exact :class:`bool` operand.
+
 .. opcode:: POP_JUMP_IF_NOT_NONE (delta)
 
    If ``STACK[-1]`` is not ``None``, increments the bytecode counter by *delta*.
@@ -1222,37 +1397,26 @@ iterations of the loop.
    .. versionadded:: 3.11
 
 
-.. opcode:: LOAD_CLOSURE (i)
-
-   Pushes a reference to the cell contained in slot ``i`` of the "fast locals"
-   storage.  The name of the variable is ``co_fastlocalnames[i]``.
-
-   Note that ``LOAD_CLOSURE`` is effectively an alias for ``LOAD_FAST``.
-   It exists to keep bytecode a little more readable.
-
-   .. versionchanged:: 3.11
-      ``i`` is no longer offset by the length of ``co_varnames``.
-
-
 .. opcode:: LOAD_DEREF (i)
 
    Loads the cell contained in slot ``i`` of the "fast locals" storage.
    Pushes a reference to the object the cell contains on the stack.
 
    .. versionchanged:: 3.11
-      ``i`` is no longer offset by the length of ``co_varnames``.
+      ``i`` is no longer offset by the length of :attr:`~codeobject.co_varnames`.
 
 
-.. opcode:: LOAD_CLASSDEREF (i)
+.. opcode:: LOAD_FROM_DICT_OR_DEREF (i)
 
-   Much like :opcode:`LOAD_DEREF` but first checks the locals dictionary before
-   consulting the cell.  This is used for loading free variables in class
-   bodies.
+   Pops a mapping off the stack and looks up the name associated with
+   slot ``i`` of the "fast locals" storage in this mapping.
+   If the name is not found there, loads it from the cell contained in
+   slot ``i``, similar to :opcode:`LOAD_DEREF`. This is used for loading
+   free variables in class bodies (which previously used
+   :opcode:`!LOAD_CLASSDEREF`) and in
+   :ref:`annotation scopes <annotation-scopes>` within class bodies.
 
-   .. versionadded:: 3.4
-
-   .. versionchanged:: 3.11
-      ``i`` is no longer offset by the length of ``co_varnames``.
+   .. versionadded:: 3.12
 
 
 .. opcode:: STORE_DEREF (i)
@@ -1261,7 +1425,7 @@ iterations of the loop.
    storage.
 
    .. versionchanged:: 3.11
-      ``i`` is no longer offset by the length of ``co_varnames``.
+      ``i`` is no longer offset by the length of :attr:`~codeobject.co_varnames`.
 
 
 .. opcode:: DELETE_DEREF (i)
@@ -1272,7 +1436,7 @@ iterations of the loop.
    .. versionadded:: 3.2
 
    .. versionchanged:: 3.11
-      ``i`` is no longer offset by the length of ``co_varnames``.
+      ``i`` is no longer offset by the length of :attr:`~codeobject.co_varnames`.
 
 
 .. opcode:: COPY_FREE_VARS (n)
@@ -1297,25 +1461,14 @@ iterations of the loop.
 
 .. opcode:: CALL (argc)
 
-   Calls a callable object with the number of arguments specified by ``argc``,
-   including the named arguments specified by the preceding
-   :opcode:`KW_NAMES`, if any.
-   On the stack are (in ascending order), either:
-
-   * NULL
-   * The callable
-   * The positional arguments
-   * The named arguments
-
-   or:
+   Calls a callable object with the number of arguments specified by ``argc``.
+   On the stack are (in ascending order):
 
    * The callable
-   * ``self``
+   * ``self`` or ``NULL``
    * The remaining positional arguments
-   * The named arguments
 
-   ``argc`` is the total of the positional and named arguments, excluding
-   ``self`` when a ``NULL`` is not present.
+   ``argc`` is the total of the positional arguments, excluding ``self``.
 
    ``CALL`` pops all arguments and the callable object off the stack,
    calls the callable object with those arguments, and pushes the return value
@@ -1323,6 +1476,33 @@ iterations of the loop.
 
    .. versionadded:: 3.11
 
+   .. versionchanged:: 3.13
+      The callable now always appears at the same position on the stack.
+
+   .. versionchanged:: 3.13
+      Calls with keyword arguments are now handled by :opcode:`CALL_KW`.
+
+
+.. opcode:: CALL_KW (argc)
+
+   Calls a callable object with the number of arguments specified by ``argc``,
+   including one or more named arguments. On the stack are (in ascending order):
+
+   * The callable
+   * ``self`` or ``NULL``
+   * The remaining positional arguments
+   * The named arguments
+   * A :class:`tuple` of keyword argument names
+
+   ``argc`` is the total of the positional and named arguments, excluding ``self``.
+   The length of the tuple of keyword argument names is the number of named arguments.
+
+   ``CALL_KW`` pops all arguments, the keyword names, and the callable object
+   off the stack, calls the callable object with those arguments, and pushes the
+   return value returned by the callable object.
+
+   .. versionadded:: 3.13
+
 
 .. opcode:: CALL_FUNCTION_EX (flags)
 
@@ -1348,30 +1528,35 @@ iterations of the loop.
    .. versionadded:: 3.11
 
 
-.. opcode:: KW_NAMES (consti)
+.. opcode:: MAKE_FUNCTION
 
-   Prefixes :opcode:`CALL`.
-   Stores a reference to ``co_consts[consti]`` into an internal variable
-   for use by :opcode:`CALL`. ``co_consts[consti]`` must be a tuple of strings.
+   Pushes a new function object on the stack built from the code object at ``STACK[1]``.
 
-   .. versionadded:: 3.11
+   .. versionchanged:: 3.10
+      Flag value ``0x04`` is a tuple of strings instead of dictionary
+
+   .. versionchanged:: 3.11
+      Qualified name at ``STACK[-1]`` was removed.
 
+   .. versionchanged:: 3.13
+      Extra function attributes on the stack, signaled by oparg flags, were
+      removed. They now use :opcode:`SET_FUNCTION_ATTRIBUTE`.
 
-.. opcode:: MAKE_FUNCTION (flags)
 
-   Pushes a new function object on the stack.  From bottom to top, the consumed
-   stack must consist of values if the argument carries a specified flag value
+.. opcode:: SET_FUNCTION_ATTRIBUTE (flag)
+
+   Sets an attribute on a function object. Expects the function at ``STACK[-1]``
+   and the attribute value to set at ``STACK[-2]``; consumes both and leaves the
+   function at ``STACK[-1]``. The flag determines which attribute to set:
 
    * ``0x01`` a tuple of default values for positional-only and
      positional-or-keyword parameters in positional order
    * ``0x02`` a dictionary of keyword-only parameters' default values
    * ``0x04`` a tuple of strings containing parameters' annotations
    * ``0x08`` a tuple containing cells for free variables, making a closure
-   * the code associated with the function (at ``STACK[-2]``)
-   * the :term:`qualified name` of the function (at ``STACK[-1]``)
 
-   .. versionchanged:: 3.10
-      Flag value ``0x04`` is a tuple of strings instead of dictionary
+   .. versionadded:: 3.13
+
 
 .. opcode:: BUILD_SLICE (argc)
 
@@ -1401,26 +1586,47 @@ iterations of the loop.
    an argument from two-byte to four-byte.
 
 
-.. opcode:: FORMAT_VALUE (flags)
+.. opcode:: CONVERT_VALUE (oparg)
 
-   Used for implementing formatted literal strings (f-strings).  Pops
-   an optional *fmt_spec* from the stack, then a required *value*.
-   *flags* is interpreted as follows:
+   Convert value to a string, depending on ``oparg``::
 
-   * ``(flags & 0x03) == 0x00``: *value* is formatted as-is.
-   * ``(flags & 0x03) == 0x01``: call :func:`str` on *value* before
-     formatting it.
-   * ``(flags & 0x03) == 0x02``: call :func:`repr` on *value* before
-     formatting it.
-   * ``(flags & 0x03) == 0x03``: call :func:`ascii` on *value* before
-     formatting it.
-   * ``(flags & 0x04) == 0x04``: pop *fmt_spec* from the stack and use
-     it, else use an empty *fmt_spec*.
+      value = STACK.pop()
+      result = func(value)
+      STACK.push(result)
 
-   Formatting is performed using :c:func:`PyObject_Format`.  The
-   result is pushed on the stack.
+   * ``oparg == 1``: call :func:`str` on *value*
+   * ``oparg == 2``: call :func:`repr` on *value*
+   * ``oparg == 3``: call :func:`ascii` on *value*
 
-   .. versionadded:: 3.6
+   Used for implementing formatted literal strings (f-strings).
+
+   .. versionadded:: 3.13
+
+
+.. opcode:: FORMAT_SIMPLE
+
+   Formats the value on top of stack::
+
+      value = STACK.pop()
+      result = value.__format__("")
+      STACK.push(result)
+
+   Used for implementing formatted literal strings (f-strings).
+
+   .. versionadded:: 3.13
+
+.. opcode:: FORMAT_SPEC
+
+   Formats the given value with the given format spec::
+
+      spec = STACK.pop()
+      value = STACK.pop()
+      result = value.__format__(spec)
+      STACK.push(result)
+
+   Used for implementing formatted literal strings (f-strings).
+
+   .. versionadded:: 3.13
 
 
 .. opcode:: MATCH_CLASS (count)
@@ -1441,11 +1647,12 @@ iterations of the loop.
       success (``True``) or failure (``False``).
 
 
-.. opcode:: RESUME (where)
+.. opcode:: RESUME (context)
 
    A no-op. Performs internal tracing, debugging and optimization checks.
 
-   The ``where`` operand marks where the ``RESUME`` occurs:
+   The ``context`` oparand consists of two parts. The lowest two bits
+   indicate where the ``RESUME`` occurs:
 
    * ``0`` The start of a function, which is neither a generator, coroutine
      nor an async generator
@@ -1453,8 +1660,14 @@ iterations of the loop.
    * ``2`` After a ``yield from`` expression
    * ``3`` After an ``await`` expression
 
+   The next bit is ``1`` if the RESUME is at except-depth ``1``, and ``0``
+   otherwise.
+
    .. versionadded:: 3.11
 
+   .. versionchanged:: 3.13
+      The oparg value changed to include information about except-depth
+
 
 .. opcode:: RETURN_GENERATOR
 
@@ -1470,9 +1683,9 @@ iterations of the loop.
    Equivalent to ``STACK[-1] = STACK[-2].send(STACK[-1])``. Used in ``yield from``
    and ``await`` statements.
 
-   If the call raises :exc:`StopIteration`, pop both items, push the
-   exception's ``value`` attribute, and increment the bytecode counter by
-   *delta*.
+   If the call raises :exc:`StopIteration`, pop the top value from the stack,
+   push the exception's ``value`` attribute, and increment the bytecode counter
+   by *delta*.
 
    .. versionadded:: 3.11
 
@@ -1483,8 +1696,8 @@ iterations of the loop.
    opcodes in the range [0,255] which don't use their argument and those
    that do (``< HAVE_ARGUMENT`` and ``>= HAVE_ARGUMENT``, respectively).
 
-   If your application uses pseudo instructions, use the :data:`hasarg`
-   collection instead.
+   If your application uses pseudo instructions or specialized instructions,
+   use the :data:`hasarg` collection instead.
 
    .. versionchanged:: 3.6
       Now every instruction has an argument, but opcodes ``< HAVE_ARGUMENT``
@@ -1495,35 +1708,90 @@ iterations of the loop.
       it is not true that comparison with ``HAVE_ARGUMENT`` indicates whether
       they use their arg.
 
+   .. deprecated:: 3.13
+      Use :data:`hasarg` instead.
 
 .. opcode:: CALL_INTRINSIC_1
 
    Calls an intrinsic function with one argument. Passes ``STACK[-1]`` as the
    argument and sets ``STACK[-1]`` to the result. Used to implement
-   functionality that is necessary but not performance critical.
+   functionality that is not performance critical.
 
    The operand determines which intrinsic function is called:
 
-   * ``0`` Not valid
-   * ``1`` Prints the argument to standard out. Used in the REPL.
-   * ``2`` Performs ``import *`` for the named module.
-   * ``3`` Extracts the return value from a ``StopIteration`` exception.
-   * ``4`` Wraps an aync generator value
-   * ``5`` Performs the unary ``+`` operation
-   * ``6`` Converts a list to a tuple
+   +-----------------------------------+-----------------------------------+
+   | Operand                           | Description                       |
+   +===================================+===================================+
+   | ``INTRINSIC_1_INVALID``           | Not valid                         |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_PRINT``               | Prints the argument to standard   |
+   |                                   | out. Used in the REPL.            |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_IMPORT_STAR``         | Performs ``import *`` for the     |
+   |                                   | named module.                     |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_STOPITERATION_ERROR`` | Extracts the return value from a  |
+   |                                   | ``StopIteration`` exception.      |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_ASYNC_GEN_WRAP``      | Wraps an aync generator value     |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_UNARY_POSITIVE``      | Performs the unary ``+``          |
+   |                                   | operation                         |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_LIST_TO_TUPLE``       | Converts a list to a tuple        |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_TYPEVAR``             | Creates a :class:`typing.TypeVar` |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_PARAMSPEC``           | Creates a                         |
+   |                                   | :class:`typing.ParamSpec`         |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_TYPEVARTUPLE``        | Creates a                         |
+   |                                   | :class:`typing.TypeVarTuple`      |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_SUBSCRIPT_GENERIC``   | Returns :class:`typing.Generic`   |
+   |                                   | subscripted with the argument     |
+   +-----------------------------------+-----------------------------------+
+   | ``INTRINSIC_TYPEALIAS``           | Creates a                         |
+   |                                   | :class:`typing.TypeAliasType`;    |
+   |                                   | used in the :keyword:`type`       |
+   |                                   | statement. The argument is a tuple|
+   |                                   | of the type alias's name,         |
+   |                                   | type parameters, and value.       |
+   +-----------------------------------+-----------------------------------+
 
    .. versionadded:: 3.12
 
 .. opcode:: CALL_INTRINSIC_2
 
-   Calls an intrinsic function with two arguments. Passes ``STACK[-2]``, ``STACK[-1]`` as the
-   arguments and sets ``STACK[-1]`` to the result. Used to implement functionality that is
-   necessary but not performance critical.
+   Calls an intrinsic function with two arguments. Used to implement functionality
+   that is not performance critical::
+
+      arg2 = STACK.pop()
+      arg1 = STACK.pop()
+      result = intrinsic2(arg1, arg2)
+      STACK.push(result)
 
    The operand determines which intrinsic function is called:
 
-   * ``0`` Not valid
-   * ``1`` Calculates the :exc:`ExceptionGroup` to raise from a ``try-except*``.
+   +----------------------------------------+-----------------------------------+
+   | Operand                                | Description                       |
+   +========================================+===================================+
+   | ``INTRINSIC_2_INVALID``                | Not valid                         |
+   +----------------------------------------+-----------------------------------+
+   | ``INTRINSIC_PREP_RERAISE_STAR``        | Calculates the                    |
+   |                                        | :exc:`ExceptionGroup` to raise    |
+   |                                        | from a ``try-except*``.           |
+   +----------------------------------------+-----------------------------------+
+   | ``INTRINSIC_TYPEVAR_WITH_BOUND``       | Creates a :class:`typing.TypeVar` |
+   |                                        | with a bound.                     |
+   +----------------------------------------+-----------------------------------+
+   | ``INTRINSIC_TYPEVAR_WITH_CONSTRAINTS`` | Creates a                         |
+   |                                        | :class:`typing.TypeVar` with      |
+   |                                        | constraints.                      |
+   +----------------------------------------+-----------------------------------+
+   | ``INTRINSIC_SET_FUNCTION_TYPE_PARAMS`` | Sets the ``__type_params__``      |
+   |                                        | attribute of a function.          |
+   +----------------------------------------+-----------------------------------+
 
    .. versionadded:: 3.12
 
@@ -1571,6 +1839,17 @@ but are replaced by real opcodes or removed before bytecode is generated.
    Undirected relative jump instructions which are replaced by their
    directed (forward/backward) counterparts by the assembler.
 
+.. opcode:: LOAD_CLOSURE (i)
+
+   Pushes a reference to the cell contained in slot ``i`` of the "fast locals"
+   storage.
+
+   Note that ``LOAD_CLOSURE`` is replaced with ``LOAD_FAST`` in the assembler.
+
+   .. versionchanged:: 3.13
+      This opcode is now a pseudo-instruction.
+
+
 .. opcode:: LOAD_METHOD
 
    Optimized unbound method lookup. Emitted as a ``LOAD_ATTR`` opcode
@@ -1586,8 +1865,9 @@ These collections are provided for automatic introspection of bytecode
 instructions:
 
 .. versionchanged:: 3.12
-   The collections now contain pseudo instructions as well. These are
-   opcodes with values ``>= MIN_PSEUDO_OPCODE``.
+   The collections now contain pseudo instructions and instrumented
+   instructions as well. These are opcodes with values ``>= MIN_PSEUDO_OPCODE``
+   and ``>= MIN_INSTRUMENTED_OPCODE``.
 
 .. data:: opname
 
@@ -1629,15 +1909,12 @@ instructions:
    Sequence of bytecodes that access an attribute by name.
 
 
-.. data:: hasjrel
+.. data:: hasjump
 
-   Sequence of bytecodes that have a relative jump target.
-
-
-.. data:: hasjabs
-
-   Sequence of bytecodes that have an absolute jump target.
+   Sequence of bytecodes that have a jump target. All jumps
+   are relative.
 
+   .. versionadded:: 3.13
 
 .. data:: haslocal
 
@@ -1653,3 +1930,20 @@ instructions:
    Sequence of bytecodes that set an exception handler.
 
    .. versionadded:: 3.12
+
+
+.. data:: hasjrel
+
+   Sequence of bytecodes that have a relative jump target.
+
+   .. deprecated:: 3.13
+      All jumps are now relative. Use :data:`hasjump`.
+
+
+.. data:: hasjabs
+
+   Sequence of bytecodes that have an absolute jump target.
+
+   .. deprecated:: 3.13
+      All jumps are now relative. This list is empty.
+
diff --git a/Doc/library/doctest.rst b/Doc/library/doctest.rst
index d6e4dca0860671..fa1b850c531346 100644
--- a/Doc/library/doctest.rst
+++ b/Doc/library/doctest.rst
@@ -143,13 +143,13 @@ Simple Usage: Checking Examples in Docstrings
 ---------------------------------------------
 
 The simplest way to start using doctest (but not necessarily the way you'll
-continue to do it) is to end each module :mod:`M` with::
+continue to do it) is to end each module :mod:`!M` with::
 
    if __name__ == "__main__":
        import doctest
        doctest.testmod()
 
-:mod:`doctest` then examines docstrings in module :mod:`M`.
+:mod:`!doctest` then examines docstrings in module :mod:`!M`.
 
 Running the module as a script causes the examples in the docstrings to get
 executed and verified::
@@ -277,13 +277,34 @@ Which Docstrings Are Examined?
 The module docstring, and all function, class and method docstrings are
 searched.  Objects imported into the module are not searched.
 
-In addition, if ``M.__test__`` exists and "is true", it must be a dict, and each
+In addition, there are cases when you want tests to be part of a module but not part
+of the help text, which requires that the tests not be included in the docstring.
+Doctest looks for a module-level variable called ``__test__`` and uses it to locate other
+tests. If ``M.__test__`` exists and is truthy, it must be a dict, and each
 entry maps a (string) name to a function object, class object, or string.
 Function and class object docstrings found from ``M.__test__`` are searched, and
 strings are treated as if they were docstrings.  In output, a key ``K`` in
-``M.__test__`` appears with name ::
+``M.__test__`` appears with name ``M.__test__.K``.
 
-   <name of M>.__test__.K
+For example, place this block of code at the top of :file:`example.py`:
+
+.. code-block:: python
+
+   __test__ = {
+       'numbers': """
+   >>> factorial(6)
+   720
+
+   >>> [factorial(n) for n in range(6)]
+   [1, 1, 2, 6, 24, 120]
+   """
+   }
+
+The value of ``example.__test__["numbers"]`` will be treated as a
+docstring and all the tests inside it will be run. It is
+important to note that the value can be mapped to a function,
+class object, or module; if so, :mod:`!doctest`
+searches them recursively for docstrings, which are then scanned for tests.
 
 Any classes found are recursively searched similarly, to test docstrings in
 their contained methods and nested classes.
@@ -382,10 +403,10 @@ What's the Execution Context?
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 By default, each time :mod:`doctest` finds a docstring to test, it uses a
-*shallow copy* of :mod:`M`'s globals, so that running tests doesn't change the
-module's real globals, and so that one test in :mod:`M` can't leave behind
+*shallow copy* of :mod:`!M`'s globals, so that running tests doesn't change the
+module's real globals, and so that one test in :mod:`!M` can't leave behind
 crumbs that accidentally allow another test to work.  This means examples can
-freely use any names defined at top-level in :mod:`M`, and names defined earlier
+freely use any names defined at top-level in :mod:`!M`, and names defined earlier
 in the docstring being run. Examples cannot see names defined in other
 docstrings.
 
@@ -409,10 +430,10 @@ Simple example::
    >>> [1, 2, 3].remove(42)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
-   ValueError: list.remove(x): x not in list
+   ValueError: 42 is not in list
 
-That doctest succeeds if :exc:`ValueError` is raised, with the ``list.remove(x):
-x not in list`` detail as shown.
+That doctest succeeds if :exc:`ValueError` is raised, with the ``42 is not in list``
+detail as shown.
 
 The expected output for an exception must start with a traceback header, which
 may be either of the following two lines, indented the same as the first line of
@@ -937,7 +958,8 @@ and :ref:`doctest-simple-testfile`.
 
    Optional argument *exclude_empty* defaults to false.  If true, objects for which
    no doctests are found are excluded from consideration. The default is a backward
-   compatibility hack, so that code still using :meth:`doctest.master.summarize` in
+   compatibility hack, so that code still using
+   :meth:`doctest.master.summarize <DocTestRunner.summarize>` in
    conjunction with :func:`testmod` continues to get output for objects with no
    tests. The *exclude_empty* argument to the newer :class:`DocTestFinder`
    constructor defaults to true.
@@ -976,7 +998,7 @@ As your collection of doctest'ed modules grows, you'll want a way to run all
 their doctests systematically.  :mod:`doctest` provides two functions that can
 be used to create :mod:`unittest` test suites from modules and text files
 containing doctests.  To integrate with :mod:`unittest` test discovery, include
-a :func:`load_tests` function in your test module::
+a :ref:`load_tests <load_tests-protocol>` function in your test module::
 
    import unittest
    import doctest
@@ -1090,19 +1112,24 @@ from text files and modules with doctests:
       :func:`DocTestSuite` returns an empty :class:`unittest.TestSuite` if *module*
       contains no docstrings instead of raising :exc:`ValueError`.
 
+.. exception:: failureException
+
+   When doctests which have been converted to unit tests by :func:`DocFileSuite`
+   or :func:`DocTestSuite` fail, this exception is raised showing the name of
+   the file containing the test and a (sometimes approximate) line number.
 
 Under the covers, :func:`DocTestSuite` creates a :class:`unittest.TestSuite` out
-of :class:`doctest.DocTestCase` instances, and :class:`DocTestCase` is a
-subclass of :class:`unittest.TestCase`. :class:`DocTestCase` isn't documented
+of :class:`!doctest.DocTestCase` instances, and :class:`!DocTestCase` is a
+subclass of :class:`unittest.TestCase`. :class:`!DocTestCase` isn't documented
 here (it's an internal detail), but studying its code can answer questions about
 the exact details of :mod:`unittest` integration.
 
 Similarly, :func:`DocFileSuite` creates a :class:`unittest.TestSuite` out of
-:class:`doctest.DocFileCase` instances, and :class:`DocFileCase` is a subclass
-of :class:`DocTestCase`.
+:class:`!doctest.DocFileCase` instances, and :class:`!DocFileCase` is a subclass
+of :class:`!DocTestCase`.
 
 So both ways of creating a :class:`unittest.TestSuite` run instances of
-:class:`DocTestCase`.  This is important for a subtle reason: when you run
+:class:`!DocTestCase`.  This is important for a subtle reason: when you run
 :mod:`doctest` functions yourself, you can control the :mod:`doctest` options in
 use directly, by passing option flags to :mod:`doctest` functions.  However, if
 you're writing a :mod:`unittest` framework, :mod:`unittest` ultimately controls
@@ -1123,14 +1150,14 @@ reporting flags specific to :mod:`unittest` support, via this function:
    section :ref:`doctest-options`.  Only "reporting flags" can be used.
 
    This is a module-global setting, and affects all future doctests run by module
-   :mod:`unittest`:  the :meth:`runTest` method of :class:`DocTestCase` looks at
-   the option flags specified for the test case when the :class:`DocTestCase`
+   :mod:`unittest`:  the :meth:`!runTest` method of :class:`!DocTestCase` looks at
+   the option flags specified for the test case when the :class:`!DocTestCase`
    instance was constructed.  If no reporting flags were specified (which is the
-   typical and expected case), :mod:`doctest`'s :mod:`unittest` reporting flags are
+   typical and expected case), :mod:`!doctest`'s :mod:`unittest` reporting flags are
    :ref:`bitwise ORed <bitwise>` into the option flags, and the option flags
    so augmented are passed to the :class:`DocTestRunner` instance created to
    run the doctest.  If any reporting flags were specified when the
-   :class:`DocTestCase` instance was constructed, :mod:`doctest`'s
+   :class:`!DocTestCase` instance was constructed, :mod:`!doctest`'s
    :mod:`unittest` reporting flags are ignored.
 
    The value of the :mod:`unittest` reporting flags in effect before the function
@@ -1300,7 +1327,8 @@ Example Objects
       A dictionary mapping from option flags to ``True`` or ``False``, which is used
       to override default options for this example.  Any option flags not contained
       in this dictionary are left at their default value (as specified by the
-      :class:`DocTestRunner`'s :attr:`optionflags`). By default, no options are set.
+      :class:`DocTestRunner`'s :ref:`optionflags <doctest-options>`).
+      By default, no options are set.
 
 
 .. _doctest-doctestfinder:
@@ -1409,6 +1437,27 @@ DocTestParser objects
       identifying this string, and is only used for error messages.
 
 
+TestResults objects
+^^^^^^^^^^^^^^^^^^^
+
+
+.. class:: TestResults(failed, attempted)
+
+   .. attribute:: failed
+
+      Number of failed tests.
+
+   .. attribute:: attempted
+
+      Number of attempted tests.
+
+   .. attribute:: skipped
+
+      Number of skipped tests.
+
+      .. versionadded:: 3.13
+
+
 .. _doctest-doctestrunner:
 
 DocTestRunner objects
@@ -1427,7 +1476,7 @@ DocTestRunner objects
    passing a subclass of :class:`OutputChecker` to the constructor.
 
    The test runner's display output can be controlled in two ways. First, an output
-   function can be passed to :meth:`TestRunner.run`; this function will be called
+   function can be passed to :meth:`run`; this function will be called
    with strings that should be displayed.  It defaults to ``sys.stdout.write``.  If
    capturing the output is not sufficient, then the display output can be also
    customized by subclassing DocTestRunner, and overriding the methods
@@ -1448,6 +1497,10 @@ DocTestRunner objects
    runner compares expected output to actual output, and how it displays failures.
    For more information, see section :ref:`doctest-options`.
 
+   The test runner accumulates statistics. The aggregated number of attempted,
+   failed and skipped examples is also available via the :attr:`tries`,
+   :attr:`failures` and :attr:`skips` attributes. The :meth:`run` and
+   :meth:`summarize` methods return a :class:`TestResults` instance.
 
    :class:`DocTestParser` defines the following methods:
 
@@ -1500,7 +1553,8 @@ DocTestRunner objects
    .. method:: run(test, compileflags=None, out=None, clear_globs=True)
 
       Run the examples in *test* (a :class:`DocTest` object), and display the
-      results using the writer function *out*.
+      results using the writer function *out*. Return a :class:`TestResults`
+      instance.
 
       The examples are run in the namespace ``test.globs``.  If *clear_globs* is
       true (the default), then this namespace will be cleared after the test runs,
@@ -1513,18 +1567,35 @@ DocTestRunner objects
 
       The output of each example is checked using the :class:`DocTestRunner`'s
       output checker, and the results are formatted by the
-      :meth:`DocTestRunner.report_\*` methods.
+      :meth:`!DocTestRunner.report_\*` methods.
 
 
    .. method:: summarize(verbose=None)
 
       Print a summary of all the test cases that have been run by this DocTestRunner,
-      and return a :term:`named tuple` ``TestResults(failed, attempted)``.
+      and return a :class:`TestResults` instance.
 
       The optional *verbose* argument controls how detailed the summary is.  If the
       verbosity is not specified, then the :class:`DocTestRunner`'s verbosity is
       used.
 
+   :class:`DocTestParser` has the following attributes:
+
+   .. attribute:: tries
+
+      Number of attempted examples.
+
+   .. attribute:: failures
+
+      Number of failed examples.
+
+   .. attribute:: skips
+
+      Number of skipped examples.
+
+      .. versionadded:: 3.13
+
+
 .. _doctest-outputchecker:
 
 OutputChecker objects
@@ -1671,12 +1742,12 @@ code under the debugger:
    module) of the object with the doctests of interest.  The result is a string,
    containing the object's docstring converted to a Python script, as described for
    :func:`script_from_examples` above.  For example, if module :file:`a.py`
-   contains a top-level function :func:`f`, then ::
+   contains a top-level function :func:`!f`, then ::
 
       import a, doctest
       print(doctest.testsource(a, "a.f"))
 
-   prints a script version of function :func:`f`'s docstring, with doctests
+   prints a script version of function :func:`!f`'s docstring, with doctests
    converted to code, and the rest placed in comments.
 
 
diff --git a/Doc/library/email.charset.rst b/Doc/library/email.charset.rst
index adbe6c1c7d29b8..aa0134412f3a60 100644
--- a/Doc/library/email.charset.rst
+++ b/Doc/library/email.charset.rst
@@ -150,7 +150,7 @@ Import this class from the :mod:`email.charset` module.
    .. method:: __str__()
 
       Returns *input_charset* as a string coerced to lower
-      case. :meth:`__repr__` is an alias for :meth:`__str__`.
+      case. :meth:`!__repr__` is an alias for :meth:`!__str__`.
 
 
    .. method:: __eq__(other)
diff --git a/Doc/library/email.compat32-message.rst b/Doc/library/email.compat32-message.rst
index 5bef155a4af310..c4c322a82e1f44 100644
--- a/Doc/library/email.compat32-message.rst
+++ b/Doc/library/email.compat32-message.rst
@@ -367,7 +367,7 @@ Here are the methods of the :class:`Message` class:
    .. method:: get(name, failobj=None)
 
       Return the value of the named header field.  This is identical to
-      :meth:`__getitem__` except that optional *failobj* is returned if the
+      :meth:`~object.__getitem__` except that optional *failobj* is returned if the
       named header is missing (defaults to ``None``).
 
    Here are some additional useful methods:
diff --git a/Doc/library/email.contentmanager.rst b/Doc/library/email.contentmanager.rst
index 918fc55677e723..5b49339650f0e9 100644
--- a/Doc/library/email.contentmanager.rst
+++ b/Doc/library/email.contentmanager.rst
@@ -32,9 +32,9 @@
       To find the handler, look for the following keys in the registry,
       stopping with the first one found:
 
-            * the string representing the full MIME type (``maintype/subtype``)
-            * the string representing the ``maintype``
-            * the empty string
+      * the string representing the full MIME type (``maintype/subtype``)
+      * the string representing the ``maintype``
+      * the empty string
 
       If none of these keys produce a handler, raise a :exc:`KeyError` for the
       full MIME type.
@@ -55,11 +55,11 @@
       look for the following keys in the registry, stopping with the first one
       found:
 
-           * the type itself (``typ``)
-           * the type's fully qualified name (``typ.__module__ + '.' +
-             typ.__qualname__``).
-           * the type's qualname (``typ.__qualname__``)
-           * the type's name (``typ.__name__``).
+      * the type itself (``typ``)
+      * the type's fully qualified name (``typ.__module__ + '.' +
+        typ.__qualname__``).
+      * the type's qualname (``typ.__qualname__``)
+      * the type's name (``typ.__name__``).
 
       If none of the above match, repeat all of the checks above for each of
       the types in the :term:`MRO` (``typ.__mro__``).  Finally, if no other key
@@ -132,15 +132,15 @@ Currently the email package provides only one concrete content manager,
        Add a :mailheader:`Content-Type` header with a ``maintype/subtype``
        value.
 
-           * For ``str``, set the MIME ``maintype`` to ``text``, and set the
-             subtype to *subtype* if it is specified, or ``plain`` if it is not.
-           * For ``bytes``, use the specified *maintype* and *subtype*, or
-             raise a :exc:`TypeError` if they are not specified.
-           * For :class:`~email.message.EmailMessage` objects, set the maintype
-             to ``message``, and set the subtype to *subtype* if it is
-             specified or ``rfc822`` if it is not.  If *subtype* is
-             ``partial``, raise an error (``bytes`` objects must be used to
-             construct ``message/partial`` parts).
+       * For ``str``, set the MIME ``maintype`` to ``text``, and set the
+         subtype to *subtype* if it is specified, or ``plain`` if it is not.
+       * For ``bytes``, use the specified *maintype* and *subtype*, or
+         raise a :exc:`TypeError` if they are not specified.
+       * For :class:`~email.message.EmailMessage` objects, set the maintype
+         to ``message``, and set the subtype to *subtype* if it is
+         specified or ``rfc822`` if it is not.  If *subtype* is
+         ``partial``, raise an error (``bytes`` objects must be used to
+         construct ``message/partial`` parts).
 
        If *charset* is provided (which is valid only for ``str``), encode the
        string to bytes using the specified character set.  The default is
@@ -155,14 +155,14 @@ Currently the email package provides only one concrete content manager,
        ``7bit`` for an input that contains non-ASCII values), raise a
        :exc:`ValueError`.
 
-            * For ``str`` objects, if *cte* is not set use heuristics to
-              determine the most compact encoding.
-            * For :class:`~email.message.EmailMessage`, per :rfc:`2046`, raise
-              an error if a *cte* of ``quoted-printable`` or ``base64`` is
-              requested for *subtype* ``rfc822``, and for any *cte* other than
-              ``7bit`` for *subtype* ``external-body``.  For
-              ``message/rfc822``, use ``8bit`` if *cte* is not specified.  For
-              all other values of *subtype*, use ``7bit``.
+       * For ``str`` objects, if *cte* is not set use heuristics to
+         determine the most compact encoding.
+       * For :class:`~email.message.EmailMessage`, per :rfc:`2046`, raise
+         an error if a *cte* of ``quoted-printable`` or ``base64`` is
+         requested for *subtype* ``rfc822``, and for any *cte* other than
+         ``7bit`` for *subtype* ``external-body``.  For
+         ``message/rfc822``, use ``8bit`` if *cte* is not specified.  For
+         all other values of *subtype*, use ``7bit``.
 
        .. note:: A *cte* of ``binary`` does not actually work correctly yet.
           The ``EmailMessage`` object as modified by ``set_content`` is
diff --git a/Doc/library/email.encoders.rst b/Doc/library/email.encoders.rst
index 5d68b104f3a45c..3bd377e33f6c15 100644
--- a/Doc/library/email.encoders.rst
+++ b/Doc/library/email.encoders.rst
@@ -25,7 +25,7 @@ is especially true for :mimetype:`image/\*` and :mimetype:`text/\*` type message
 containing binary data.
 
 The :mod:`email` package provides some convenient encoders in its
-:mod:`encoders` module.  These encoders are actually used by the
+:mod:`~email.encoders` module.  These encoders are actually used by the
 :class:`~email.mime.audio.MIMEAudio` and :class:`~email.mime.image.MIMEImage`
 class constructors to provide default encodings.  All encoder functions take
 exactly one argument, the message object to encode.  They usually extract the
diff --git a/Doc/library/email.errors.rst b/Doc/library/email.errors.rst
index 194a98696f437d..56aea6598b8615 100644
--- a/Doc/library/email.errors.rst
+++ b/Doc/library/email.errors.rst
@@ -58,6 +58,15 @@ The following exception classes are defined in the :mod:`email.errors` module:
    :class:`~email.mime.nonmultipart.MIMENonMultipart` (e.g.
    :class:`~email.mime.image.MIMEImage`).
 
+.. exception:: MessageDefect()
+
+   This is the base class for all defects found when parsing email messages.
+   It is derived from :exc:`ValueError`.
+
+.. exception:: HeaderDefect()
+
+   This is the base class for all defects found when parsing email headers.
+   It is derived from :exc:`MessageDefect`.
 
 Here is the list of the defects that the :class:`~email.parser.FeedParser`
 can find while parsing messages.  Note that the defects are added to the message
diff --git a/Doc/library/email.examples.rst b/Doc/library/email.examples.rst
index fc964622809d0e..492a8354d8bf85 100644
--- a/Doc/library/email.examples.rst
+++ b/Doc/library/email.examples.rst
@@ -55,11 +55,11 @@ Up to the prompt, the output from the above is:
 
     To: Penelope Pussycat <penelope@example.com>, Fabrette Pussycat <fabrette@example.com>
     From: Pepé Le Pew <pepe@example.com>
-    Subject: Ayons asperges pour le déjeuner
+    Subject: Pourquoi pas des asperges pour ce midi ?
 
     Salut!
 
-    Cela ressemble à un excellent recipie[1] déjeuner.
+    Cette recette [1] sera sûrement un très bon repas.
 
 
 .. rubric:: Footnotes
diff --git a/Doc/library/email.generator.rst b/Doc/library/email.generator.rst
index 34ad7b7f200af3..afa0038ea2d6c4 100644
--- a/Doc/library/email.generator.rst
+++ b/Doc/library/email.generator.rst
@@ -10,8 +10,8 @@
 
 One of the most common tasks is to generate the flat (serialized) version of
 the email message represented by a message object structure.  You will need to
-do this if you want to send your message via :meth:`smtplib.SMTP.sendmail` or
-the :mod:`nntplib` module, or print the message on the console.  Taking a
+do this if you want to send your message via :meth:`smtplib.SMTP.sendmail`,
+or print the message on the console.  Taking a
 message object structure and producing a serialized representation is the job
 of the generator classes.
 
@@ -274,9 +274,9 @@ in with information about the part.
 .. rubric:: Footnotes
 
 .. [#] This statement assumes that you use the appropriate setting for
-       ``unixfrom``, and that there are no :mod:`policy` settings calling for
+       ``unixfrom``, and that there are no :mod:`email.policy` settings calling for
        automatic adjustments (for example,
-       :attr:`~email.policy.Policy.refold_source` must be ``none``, which is
+       :attr:`~email.policy.EmailPolicy.refold_source` must be ``none``, which is
        *not* the default).  It is also not 100% true, since if the message
        does not conform to the RFC standards occasionally information about the
        exact original text is lost during parsing error recovery.  It is a goal
diff --git a/Doc/library/email.message.rst b/Doc/library/email.message.rst
index 5e0509f4181199..f58d93da6ed687 100644
--- a/Doc/library/email.message.rst
+++ b/Doc/library/email.message.rst
@@ -67,7 +67,7 @@ message objects.
       with the base :class:`~email.message.Message` class *maxheaderlen* is
       accepted, but defaults to ``None``, which means that by default the line
       length is controlled by the
-      :attr:`~email.policy.EmailPolicy.max_line_length` of the policy.  The
+      :attr:`~email.policy.Policy.max_line_length` of the policy.  The
       *policy* argument may be used to override the default policy obtained
       from the message instance.  This can be used to control some of the
       formatting produced by the method, since the specified *policy* will be
@@ -213,7 +213,7 @@ message objects.
          del msg['subject']
          msg['subject'] = 'Python roolz!'
 
-      If the :mod:`policy` defines certain headers to be unique (as the standard
+      If the :mod:`policy <email.policy>` defines certain headers to be unique (as the standard
       policies do), this method may raise a :exc:`ValueError` when an attempt
       is made to assign a value to such a header when one already exists.  This
       behavior is intentional for consistency's sake, but do not depend on it
@@ -247,7 +247,7 @@ message objects.
    .. method:: get(name, failobj=None)
 
       Return the value of the named header field.  This is identical to
-      :meth:`__getitem__` except that optional *failobj* is returned if the
+      :meth:`~object.__getitem__` except that optional *failobj* is returned if the
       named header is missing (*failobj* defaults to ``None``).
 
 
@@ -378,7 +378,7 @@ message objects.
       deprecated.
 
       Note that existing parameter values of headers may be accessed through
-      the :attr:`~email.headerregistry.BaseHeader.params` attribute of the
+      the :attr:`~email.headerregistry.ParameterizedMIMEHeader.params` attribute of the
       header value (for example, ``msg['Content-Type'].params['charset']``).
 
       .. versionchanged:: 3.4 ``replace`` keyword was added.
@@ -691,7 +691,7 @@ message objects.
 
    .. method:: clear_content()
 
-      Remove the payload and all of the :exc:`Content-` headers, leaving
+      Remove the payload and all of the :mailheader:`!Content-` headers, leaving
       all other headers intact and in their original order.
 
 
diff --git a/Doc/library/email.parser.rst b/Doc/library/email.parser.rst
index d9a61616bbbdfb..dda0466a6afa7d 100644
--- a/Doc/library/email.parser.rst
+++ b/Doc/library/email.parser.rst
@@ -39,9 +39,9 @@ returns the root object when you close the parser.
 Note that the parser can be extended in limited ways, and of course you can
 implement your own parser completely from scratch.  All of the logic that
 connects the :mod:`email` package's bundled parser and the
-:class:`~email.message.EmailMessage` class is embodied in the :mod:`policy`
+:class:`~email.message.EmailMessage` class is embodied in the :class:`~email.policy.Policy`
 class, so a custom parser can create message object trees any way it finds
-necessary by implementing custom versions of the appropriate :mod:`policy`
+necessary by implementing custom versions of the appropriate :class:`!Policy`
 methods.
 
 
diff --git a/Doc/library/email.policy.rst b/Doc/library/email.policy.rst
index 2439dee676c9b0..fd47dd0dc5df36 100644
--- a/Doc/library/email.policy.rst
+++ b/Doc/library/email.policy.rst
@@ -557,17 +557,17 @@ more closely to the RFCs relevant to their domains.
 With all of these :class:`EmailPolicies <.EmailPolicy>`, the effective API of
 the email package is changed from the Python 3.2 API in the following ways:
 
-   * Setting a header on a :class:`~email.message.Message` results in that
-     header being parsed and a header object created.
+* Setting a header on a :class:`~email.message.Message` results in that
+  header being parsed and a header object created.
 
-   * Fetching a header value from a :class:`~email.message.Message` results
-     in that header being parsed and a header object created and
-     returned.
+* Fetching a header value from a :class:`~email.message.Message` results
+  in that header being parsed and a header object created and
+  returned.
 
-   * Any header object, or any header that is refolded due to the
-     policy settings, is folded using an algorithm that fully implements the
-     RFC folding algorithms, including knowing where encoded words are required
-     and allowed.
+* Any header object, or any header that is refolded due to the
+  policy settings, is folded using an algorithm that fully implements the
+  RFC folding algorithms, including knowing where encoded words are required
+  and allowed.
 
 From the application view, this means that any header obtained through the
 :class:`~email.message.EmailMessage` is a header object with extra
diff --git a/Doc/library/email.rst b/Doc/library/email.rst
index 816fae991d24cb..3a6039004fcaae 100644
--- a/Doc/library/email.rst
+++ b/Doc/library/email.rst
@@ -15,7 +15,7 @@
 The :mod:`email` package is a library for managing email messages.  It is
 specifically *not* designed to do any sending of email messages to SMTP
 (:rfc:`2821`), NNTP, or other servers; those are functions of modules such as
-:mod:`smtplib` and :mod:`nntplib`.  The :mod:`email` package attempts to be as
+:mod:`smtplib`.  The :mod:`email` package attempts to be as
 RFC-compliant as possible, supporting :rfc:`5322` and :rfc:`6532`, as well as
 such MIME-related RFCs as :rfc:`2045`, :rfc:`2046`, :rfc:`2047`, :rfc:`2183`,
 and :rfc:`2231`.
@@ -141,9 +141,6 @@ Legacy API:
    Module :mod:`imaplib`
       IMAP (Internet Message Access Protocol) client
 
-   Module :mod:`nntplib`
-      NNTP (Net News Transport Protocol) client
-
    Module :mod:`mailbox`
       Tools for creating, reading, and managing collections of messages on disk
       using a variety standard formats.
diff --git a/Doc/library/ensurepip.rst b/Doc/library/ensurepip.rst
index d7f89cf96368b5..de3b93f5e61073 100644
--- a/Doc/library/ensurepip.rst
+++ b/Doc/library/ensurepip.rst
@@ -61,7 +61,7 @@ By default, ``pip`` is installed into the current virtual environment
 active virtual environment). The installation location can be controlled
 through two additional command line options:
 
-* ``--root <dir>``: Installs ``pip`` relative to the given root directory
+* :samp:`--root {dir}`: Installs ``pip`` relative to the given root directory
   rather than the root of the currently active virtual environment (if any)
   or the default root for the current Python installation.
 * ``--user``: Installs ``pip`` into the user site packages directory rather
diff --git a/Doc/library/enum.rst b/Doc/library/enum.rst
index 582e06261afd72..20222bfb3611ab 100644
--- a/Doc/library/enum.rst
+++ b/Doc/library/enum.rst
@@ -165,7 +165,7 @@ Data Types
    to subclass *EnumType* -- see :ref:`Subclassing EnumType <enumtype-examples>`
    for details.
 
-   *EnumType* is responsible for setting the correct :meth:`!__repr__`,
+   ``EnumType`` is responsible for setting the correct :meth:`!__repr__`,
    :meth:`!__str__`, :meth:`!__format__`, and :meth:`!__reduce__` methods on the
    final *enum*, as well as creating the enum members, properly handling
    duplicates, providing iteration over the enum class, etc.
@@ -198,11 +198,12 @@ Data Types
         >>> some_var = Color.RED
         >>> some_var in Color
         True
+        >>> Color.RED.value in Color
+        True
 
-      .. note::
+   .. versionchanged:: 3.12
 
-         In Python 3.12 it will be possible to check for member values and not
-         just members; until then, a ``TypeError`` will be raised if a
+         Before Python 3.12, a ``TypeError`` is raised if a
          non-Enum-member is used in a containment check.
 
    .. method:: EnumType.__dir__(cls)
@@ -234,6 +235,10 @@ Data Types
         >>> len(Color)
         3
 
+   .. attribute:: EnumType.__members__
+
+      Returns a mapping of every enum name to its member, including aliases
+
    .. method:: EnumType.__reversed__(cls)
 
       Returns each member in *cls* in reverse definition order::
@@ -241,6 +246,20 @@ Data Types
         >>> list(reversed(Color))
         [<Color.BLUE: 3>, <Color.GREEN: 2>, <Color.RED: 1>]
 
+   .. method:: EnumType._add_alias_
+
+      Adds a new name as an alias to an existing member.  Raises a
+      :exc:`NameError` if the name is already assigned to a different member.
+
+   .. method:: EnumType._add_value_alias_
+
+      Adds a new value as an alias to an existing member.  Raises a
+      :exc:`ValueError` if the value is already linked with a different member.
+
+   .. versionadded:: 3.11
+
+      Before 3.11 ``EnumType`` was called ``EnumMeta``, which is still available as an alias.
+
 
 .. class:: Enum
 
@@ -401,23 +420,23 @@ Data Types
 
 .. class:: IntEnum
 
-   *IntEnum* is the same as *Enum*, but its members are also integers and can be
+   *IntEnum* is the same as :class:`Enum`, but its members are also integers and can be
    used anywhere that an integer can be used.  If any integer operation is performed
    with an *IntEnum* member, the resulting value loses its enumeration status.
 
       >>> from enum import IntEnum
-      >>> class Numbers(IntEnum):
+      >>> class Number(IntEnum):
       ...     ONE = 1
       ...     TWO = 2
       ...     THREE = 3
       ...
-      >>> Numbers.THREE
-      <Numbers.THREE: 3>
-      >>> Numbers.ONE + Numbers.TWO
+      >>> Number.THREE
+      <Number.THREE: 3>
+      >>> Number.ONE + Number.TWO
       3
-      >>> Numbers.THREE + 5
+      >>> Number.THREE + 5
       8
-      >>> Numbers.THREE == 3
+      >>> Number.THREE == 3
       True
 
    .. note::
@@ -432,7 +451,7 @@ Data Types
 
 .. class:: StrEnum
 
-   *StrEnum* is the same as *Enum*, but its members are also strings and can be used
+   ``StrEnum`` is the same as :class:`Enum`, but its members are also strings and can be used
    in most of the same places that a string can be used.  The result of any string
    operation performed on or with a *StrEnum* member is not part of the enumeration.
 
@@ -544,7 +563,7 @@ Data Types
 
    .. method:: __invert__(self):
 
-      Returns all the flags in *type(self)* that are not in self::
+      Returns all the flags in *type(self)* that are not in *self*::
 
          >>> ~white
          <Color: 0>
@@ -571,7 +590,7 @@ Data Types
 
 .. class:: IntFlag
 
-   *IntFlag* is the same as *Flag*, but its members are also integers and can be
+   ``IntFlag`` is the same as :class:`Flag`, but its members are also integers and can be
    used anywhere that an integer can be used.
 
       >>> from enum import IntFlag, auto
@@ -591,12 +610,12 @@ Data Types
         >>> Color.RED + 2
         3
 
-   If a *Flag* operation is performed with an *IntFlag* member and:
+   If a :class:`Flag` operation is performed with an *IntFlag* member and:
 
-      * the result is a valid *IntFlag*: an *IntFlag* is returned
-      * the result is not a valid *IntFlag*: the result depends on the *FlagBoundary* setting
+   * the result is a valid *IntFlag*: an *IntFlag* is returned
+   * the result is not a valid *IntFlag*: the result depends on the :class:`FlagBoundary` setting
 
-   The *repr()* of unnamed zero-valued flags has changed.  It is now:
+   The :func:`repr()` of unnamed zero-valued flags has changed.  It is now:
 
       >>> Color(0)
       <Color: 0>
@@ -621,8 +640,8 @@ Data Types
    :class:`!ReprEnum` uses the :meth:`repr() <Enum.__repr__>` of :class:`Enum`,
    but the :class:`str() <str>` of the mixed-in data type:
 
-      * :meth:`!int.__str__` for :class:`IntEnum` and :class:`IntFlag`
-      * :meth:`!str.__str__` for :class:`StrEnum`
+   * :meth:`!int.__str__` for :class:`IntEnum` and :class:`IntFlag`
+   * :meth:`!str.__str__` for :class:`StrEnum`
 
    Inherit from :class:`!ReprEnum` to keep the :class:`str() <str>` / :func:`format`
    of the mixed-in data type instead of using the
@@ -692,7 +711,7 @@ Data Types
 
 .. class:: FlagBoundary
 
-   *FlagBoundary* controls how out-of-range values are handled in *Flag* and its
+   ``FlagBoundary`` controls how out-of-range values are handled in :class:`Flag` and its
    subclasses.
 
    .. attribute:: STRICT
@@ -715,7 +734,7 @@ Data Types
 
    .. attribute:: CONFORM
 
-      Out-of-range values have invalid values removed, leaving a valid *Flag*
+      Out-of-range values have invalid values removed, leaving a valid :class:`Flag`
       value::
 
          >>> from enum import Flag, CONFORM, auto
@@ -729,7 +748,7 @@ Data Types
 
    .. attribute:: EJECT
 
-      Out-of-range values lose their *Flag* membership and revert to :class:`int`.
+      Out-of-range values lose their :class:`Flag` membership and revert to :class:`int`.
 
          >>> from enum import Flag, EJECT, auto
          >>> class EjectFlag(Flag, boundary=EJECT):
@@ -742,7 +761,7 @@ Data Types
 
    .. attribute:: KEEP
 
-      Out-of-range values are kept, and the *Flag* membership is kept.
+      Out-of-range values are kept, and the :class:`Flag` membership is kept.
       This is the default for :class:`IntFlag`::
 
          >>> from enum import Flag, KEEP, auto
@@ -764,37 +783,41 @@ Supported ``__dunder__`` names
 :attr:`~EnumType.__members__` is a read-only ordered mapping of ``member_name``:``member``
 items.  It is only available on the class.
 
-:meth:`~object.__new__`, if specified, must create and return the enum members; it is
-also a very good idea to set the member's :attr:`!_value_` appropriately.  Once
-all the members are created it is no longer used.
+:meth:`~object.__new__`, if specified, must create and return the enum members;
+it is also a very good idea to set the member's :attr:`!_value_` appropriately.
+Once all the members are created it is no longer used.
 
 
 Supported ``_sunder_`` names
 """"""""""""""""""""""""""""
 
-- ``_name_`` -- name of the member
-- ``_value_`` -- value of the member; can be set / modified in ``__new__``
-
-- ``_missing_`` -- a lookup function used when a value is not found; may be
-  overridden
-- ``_ignore_`` -- a list of names, either as a :class:`list` or a :class:`str`,
-  that will not be transformed into members, and will be removed from the final
-  class
-- ``_order_`` -- used in Python 2/3 code to ensure member order is consistent
-  (class attribute, removed during class creation)
-- ``_generate_next_value_`` -- used to get an appropriate value for an enum
-  member; may be overridden
-
-   .. note::
-
-       For standard :class:`Enum` classes the next value chosen is the last value seen
-       incremented by one.
-
-       For :class:`Flag` classes the next value chosen will be the next highest
-       power-of-two, regardless of the last value seen.
+- :meth:`~EnumType._add_alias_` -- adds a new name as an alias to an existing
+  member.
+- :meth:`~EnumType._add_value_alias_` -- adds a new value as an alias to an
+  existing member.
+- :attr:`~Enum._name_` -- name of the member
+- :attr:`~Enum._value_` -- value of the member; can be set in ``__new__``
+- :meth:`~Enum._missing_` -- a lookup function used when a value is not found;
+  may be overridden
+- :attr:`~Enum._ignore_` -- a list of names, either as a :class:`list` or a
+  :class:`str`, that will not be transformed into members, and will be removed
+  from the final class
+- :attr:`~Enum._order_` -- used in Python 2/3 code to ensure member order is
+  consistent (class attribute, removed during class creation)
+- :meth:`~Enum._generate_next_value_` -- used to get an appropriate value for
+  an enum member; may be overridden
+
+  .. note::
+
+     For standard :class:`Enum` classes the next value chosen is the highest
+     value seen incremented by one.
+
+     For :class:`Flag` classes the next value chosen will be the next highest
+     power-of-two.
 
 .. versionadded:: 3.6 ``_missing_``, ``_order_``, ``_generate_next_value_``
 .. versionadded:: 3.7 ``_ignore_``
+.. versionadded:: 3.13 ``_add_alias_``, ``_add_value_alias_``
 
 ---------------
 
@@ -804,20 +827,20 @@ Utilities and Decorators
 .. class:: auto
 
    *auto* can be used in place of a value.  If used, the *Enum* machinery will
-   call an *Enum*'s :meth:`~Enum._generate_next_value_` to get an appropriate value.
-   For *Enum* and *IntEnum* that appropriate value will be the last value plus
-   one; for *Flag* and *IntFlag* it will be the first power-of-two greater
-   than the highest value; for *StrEnum* it will be the lower-cased version of
+   call an :class:`Enum`'s :meth:`~Enum._generate_next_value_` to get an appropriate value.
+   For :class:`Enum` and :class:`IntEnum` that appropriate value will be the last value plus
+   one; for :class:`Flag` and :class:`IntFlag` it will be the first power-of-two greater
+   than the highest value; for :class:`StrEnum` it will be the lower-cased version of
    the member's name.  Care must be taken if mixing *auto()* with manually
    specified values.
 
    *auto* instances are only resolved when at the top level of an assignment:
 
-      * ``FIRST = auto()`` will work (auto() is replaced with ``1``);
-      * ``SECOND = auto(), -2`` will work (auto is replaced with ``2``, so ``2, -2`` is
-         used to create the ``SECOND`` enum member;
-      * ``THREE = [auto(), -3]`` will *not* work (``<auto instance>, -3`` is used to
-        create the ``THREE`` enum member)
+   * ``FIRST = auto()`` will work (auto() is replaced with ``1``);
+   * ``SECOND = auto(), -2`` will work (auto is replaced with ``2``, so ``2, -2`` is
+      used to create the ``SECOND`` enum member;
+   * ``THREE = [auto(), -3]`` will *not* work (``<auto instance>, -3`` is used to
+     create the ``THREE`` enum member)
 
    .. versionchanged:: 3.11.1
 
diff --git a/Doc/library/errno.rst b/Doc/library/errno.rst
index 5122c69697ef91..283e8b013265d9 100644
--- a/Doc/library/errno.rst
+++ b/Doc/library/errno.rst
@@ -511,6 +511,13 @@ defined by the module.  The specific list of defined symbols is available as
    Operation not supported on transport endpoint
 
 
+.. data:: ENOTSUP
+
+   Operation not supported
+
+   .. versionadded:: 3.2
+
+
 .. data:: EPFNOSUPPORT
 
    Protocol family not supported
@@ -666,3 +673,24 @@ defined by the module.  The specific list of defined symbols is available as
    .. availability:: WASI, FreeBSD
 
    .. versionadded:: 3.11.1
+
+
+.. data:: ECANCELED
+
+   Operation canceled
+
+   .. versionadded:: 3.2
+
+
+.. data:: EOWNERDEAD
+
+   Owner died
+
+   .. versionadded:: 3.2
+
+
+.. data:: ENOTRECOVERABLE
+
+   State not recoverable
+
+   .. versionadded:: 3.2
diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 4c84e5f855431a..b67215b8b3a362 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -220,10 +220,16 @@ The following exceptions are the exceptions that are usually raised.
    load a module.  Also raised when the "from list" in ``from ... import``
    has a name that cannot be found.
 
-   The :attr:`name` and :attr:`path` attributes can be set using keyword-only
-   arguments to the constructor. When set they represent the name of the module
-   that was attempted to be imported and the path to any file which triggered
-   the exception, respectively.
+   The optional *name* and *path* keyword-only arguments
+   set the corresponding attributes:
+
+   .. attribute:: name
+
+      The name of the module that was attempted to be imported.
+
+   .. attribute:: path
+
+      The path to any file which triggered the exception.
 
    .. versionchanged:: 3.3
       Added the :attr:`name` and :attr:`path` attributes.
@@ -423,9 +429,11 @@ The following exceptions are the exceptions that are usually raised.
    :meth:`~iterator.__next__` method to signal that there are no further
    items produced by the iterator.
 
-   The exception object has a single attribute :attr:`value`, which is
-   given as an argument when constructing the exception, and defaults
-   to :const:`None`.
+   .. attribute:: StopIteration.value
+
+      The exception object has a single attribute :attr:`!value`, which is
+      given as an argument when constructing the exception, and defaults
+      to :const:`None`.
 
    When a :term:`generator` or :term:`coroutine` function
    returns, a new :exc:`StopIteration` instance is
@@ -450,7 +458,7 @@ The following exceptions are the exceptions that are usually raised.
 
 .. exception:: StopAsyncIteration
 
-   Must be raised by :meth:`__anext__` method of an
+   Must be raised by :meth:`~object.__anext__` method of an
    :term:`asynchronous iterator` object to stop the iteration.
 
    .. versionadded:: 3.5
@@ -659,8 +667,8 @@ depending on the system error code.
 
    Raised when an operation would block on an object (e.g. socket) set
    for non-blocking operation.
-   Corresponds to :c:data:`errno` :py:data:`~errno.EAGAIN`, :py:data:`~errno.EALREADY`,
-   :py:data:`~errno.EWOULDBLOCK` and :py:data:`~errno.EINPROGRESS`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.EAGAIN`, :py:const:`~errno.EALREADY`,
+   :py:const:`~errno.EWOULDBLOCK` and :py:const:`~errno.EINPROGRESS`.
 
    In addition to those of :exc:`OSError`, :exc:`BlockingIOError` can have
    one more attribute:
@@ -674,7 +682,7 @@ depending on the system error code.
 .. exception:: ChildProcessError
 
    Raised when an operation on a child process failed.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ECHILD`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ECHILD`.
 
 .. exception:: ConnectionError
 
@@ -688,40 +696,40 @@ depending on the system error code.
    A subclass of :exc:`ConnectionError`, raised when trying to write on a
    pipe while the other end has been closed, or trying to write on a socket
    which has been shutdown for writing.
-   Corresponds to :c:data:`errno` :py:data:`~errno.EPIPE` and :py:data:`~errno.ESHUTDOWN`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.EPIPE` and :py:const:`~errno.ESHUTDOWN`.
 
 .. exception:: ConnectionAbortedError
 
    A subclass of :exc:`ConnectionError`, raised when a connection attempt
    is aborted by the peer.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ECONNABORTED`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ECONNABORTED`.
 
 .. exception:: ConnectionRefusedError
 
    A subclass of :exc:`ConnectionError`, raised when a connection attempt
    is refused by the peer.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ECONNREFUSED`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ECONNREFUSED`.
 
 .. exception:: ConnectionResetError
 
    A subclass of :exc:`ConnectionError`, raised when a connection is
    reset by the peer.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ECONNRESET`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ECONNRESET`.
 
 .. exception:: FileExistsError
 
    Raised when trying to create a file or directory which already exists.
-   Corresponds to :c:data:`errno` :py:data:`~errno.EEXIST`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.EEXIST`.
 
 .. exception:: FileNotFoundError
 
    Raised when a file or directory is requested but doesn't exist.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ENOENT`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ENOENT`.
 
 .. exception:: InterruptedError
 
    Raised when a system call is interrupted by an incoming signal.
-   Corresponds to :c:data:`errno` :py:data:`~errno.EINTR`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.EINTR`.
 
    .. versionchanged:: 3.5
       Python now retries system calls when a syscall is interrupted by a
@@ -732,7 +740,7 @@ depending on the system error code.
 
    Raised when a file operation (such as :func:`os.remove`) is requested
    on a directory.
-   Corresponds to :c:data:`errno` :py:data:`~errno.EISDIR`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.EISDIR`.
 
 .. exception:: NotADirectoryError
 
@@ -740,28 +748,28 @@ depending on the system error code.
    something which is not a directory.  On most POSIX platforms, it may also be
    raised if an operation attempts to open or traverse a non-directory file as if
    it were a directory.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ENOTDIR`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ENOTDIR`.
 
 .. exception:: PermissionError
 
    Raised when trying to run an operation without the adequate access
    rights - for example filesystem permissions.
-   Corresponds to :c:data:`errno` :py:data:`~errno.EACCES`,
-   :py:data:`~errno.EPERM`, and :py:data:`~errno.ENOTCAPABLE`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.EACCES`,
+   :py:const:`~errno.EPERM`, and :py:const:`~errno.ENOTCAPABLE`.
 
    .. versionchanged:: 3.11.1
-      WASI's :py:data:`~errno.ENOTCAPABLE` is now mapped to
+      WASI's :py:const:`~errno.ENOTCAPABLE` is now mapped to
       :exc:`PermissionError`.
 
 .. exception:: ProcessLookupError
 
    Raised when a given process doesn't exist.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ESRCH`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ESRCH`.
 
 .. exception:: TimeoutError
 
    Raised when a system function timed out at the system level.
-   Corresponds to :c:data:`errno` :py:data:`~errno.ETIMEDOUT`.
+   Corresponds to :c:data:`errno` :py:const:`~errno.ETIMEDOUT`.
 
 .. versionadded:: 3.3
    All the above :exc:`OSError` subclasses were added.
@@ -871,6 +879,8 @@ The following exceptions are used as warning categories; see the
    .. versionadded:: 3.2
 
 
+.. _lib-exception-groups:
+
 Exception groups
 ----------------
 
@@ -912,10 +922,11 @@ their subgroups based on the types of the contained exceptions.
       Returns an exception group that contains only the exceptions from the
       current group that match *condition*, or ``None`` if the result is empty.
 
-      The condition can be either a function that accepts an exception and returns
-      true for those that should be in the subgroup, or it can be an exception type
-      or a tuple of exception types, which is used to check for a match using the
-      same check that is used in an ``except`` clause.
+      The condition can be an exception type or tuple of exception types, in which
+      case each exception is checked for a match using the same check that is used
+      in an ``except`` clause.  The condition can also be a callable (other than
+      a type object) that accepts an exception as its single argument and returns
+      true for the exceptions that should be in the subgroup.
 
       The nesting structure of the current exception is preserved in the result,
       as are the values of its :attr:`message`, :attr:`__traceback__`,
@@ -926,6 +937,9 @@ their subgroups based on the types of the contained exceptions.
       including the top-level and any nested exception groups. If the condition is
       true for such an exception group, it is included in the result in full.
 
+      .. versionadded:: 3.13
+         ``condition`` can be any callable which is not a type object.
+
    .. method:: split(condition)
 
       Like :meth:`subgroup`, but returns the pair ``(match, rest)`` where ``match``
diff --git a/Doc/library/fcntl.rst b/Doc/library/fcntl.rst
index 997c7ea571fc03..309ad652d4af34 100644
--- a/Doc/library/fcntl.rst
+++ b/Doc/library/fcntl.rst
@@ -18,7 +18,7 @@ interface to the :c:func:`fcntl` and :c:func:`ioctl` Unix routines.  For a
 complete description of these calls, see :manpage:`fcntl(2)` and
 :manpage:`ioctl(2)` Unix manual pages.
 
-.. include:: ../includes/wasm-notavail.rst
+.. availability:: Unix, not Emscripten, not WASI.
 
 All functions in this module take a file descriptor *fd* as their first
 argument.  This can be an integer file descriptor, such as returned by
@@ -172,9 +172,9 @@ The module defines the following functions:
    which the lock starts, relative to *whence*, and *whence* is as with
    :func:`io.IOBase.seek`, specifically:
 
-   * :const:`0` -- relative to the start of the file (:data:`os.SEEK_SET`)
-   * :const:`1` -- relative to the current buffer position (:data:`os.SEEK_CUR`)
-   * :const:`2` -- relative to the end of the file (:data:`os.SEEK_END`)
+   * ``0`` -- relative to the start of the file (:const:`os.SEEK_SET`)
+   * ``1`` -- relative to the current buffer position (:const:`os.SEEK_CUR`)
+   * ``2`` -- relative to the end of the file (:const:`os.SEEK_END`)
 
    The default for *start* is 0, which means to start at the beginning of the file.
    The default for *len* is 0 which means to lock to the end of the file.  The
@@ -201,7 +201,7 @@ using the :func:`flock` call may be better.
 .. seealso::
 
    Module :mod:`os`
-      If the locking flags :data:`~os.O_SHLOCK` and :data:`~os.O_EXLOCK` are
+      If the locking flags :const:`~os.O_SHLOCK` and :const:`~os.O_EXLOCK` are
       present in the :mod:`os` module (on BSD only), the :func:`os.open`
       function provides an alternative to the :func:`lockf` and :func:`flock`
       functions.
diff --git a/Doc/library/filecmp.rst b/Doc/library/filecmp.rst
index 83e9e14ddcacd8..dfe4b7c59fd578 100644
--- a/Doc/library/filecmp.rst
+++ b/Doc/library/filecmp.rst
@@ -74,7 +74,7 @@ The :class:`dircmp` class
 
    Construct a new directory comparison object, to compare the directories *a*
    and *b*.  *ignore* is a list of names to ignore, and defaults to
-   :attr:`filecmp.DEFAULT_IGNORES`.  *hide* is a list of names to hide, and
+   :const:`filecmp.DEFAULT_IGNORES`.  *hide* is a list of names to hide, and
    defaults to ``[os.curdir, os.pardir]``.
 
    The :class:`dircmp` class compares files by doing *shallow* comparisons
@@ -100,7 +100,7 @@ The :class:`dircmp` class
    used to get various bits of information about the directory trees being
    compared.
 
-   Note that via :meth:`__getattr__` hooks, all attributes are computed lazily,
+   Note that via :meth:`~object.__getattr__` hooks, all attributes are computed lazily,
    so there is no speed penalty if only those attributes which are lightweight
    to compute are used.
 
diff --git a/Doc/library/fileinput.rst b/Doc/library/fileinput.rst
index 4bc868759f2025..f93e9a58791eeb 100644
--- a/Doc/library/fileinput.rst
+++ b/Doc/library/fileinput.rst
@@ -177,7 +177,7 @@ available for subclassing as well:
       The keyword-only parameter *encoding* and *errors* are added.
 
    .. versionchanged:: 3.11
-      The ``'rU'`` and ``'U'`` modes and the :meth:`__getitem__` method have
+      The ``'rU'`` and ``'U'`` modes and the :meth:`!__getitem__` method have
       been removed.
 
 
diff --git a/Doc/library/fractions.rst b/Doc/library/fractions.rst
index fe2e8ab655edf8..509c63686f5a7f 100644
--- a/Doc/library/fractions.rst
+++ b/Doc/library/fractions.rst
@@ -25,7 +25,7 @@ another rational number, or from a string.
 
    The first version requires that *numerator* and *denominator* are instances
    of :class:`numbers.Rational` and returns a new :class:`Fraction` instance
-   with value ``numerator/denominator``. If *denominator* is :const:`0`, it
+   with value ``numerator/denominator``. If *denominator* is ``0``, it
    raises a :exc:`ZeroDivisionError`. The second version requires that
    *other_fraction* is an instance of :class:`numbers.Rational` and returns a
    :class:`Fraction` instance with the same value.  The next two versions accept
diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index 47054812f9f514..d1fe6414ea020c 100644
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -105,13 +105,7 @@ The module defines the following items:
    .. versionchanged:: 3.4
       The class now supports hostname check with
       :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
-
-   .. deprecated:: 3.6
-       *keyfile* and *certfile* are deprecated in favor of *context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
+      :const:`ssl.HAS_SNI`).
 
    .. versionchanged:: 3.9
       If the *timeout* parameter is set to be zero, it will raise a
@@ -120,7 +114,7 @@ The module defines the following items:
       Latin-1 to UTF-8 to follow :rfc:`2640`.
 
    .. versionchanged:: 3.12
-       The deprecated *keyfile* and *certfile* parameters have been removed.
+      The deprecated *keyfile* and *certfile* parameters have been removed.
 
    Here's a sample session using the :class:`FTP_TLS` class::
 
@@ -437,7 +431,7 @@ FTP_TLS Objects
 
 .. attribute:: FTP_TLS.ssl_version
 
-   The SSL version to use (defaults to :attr:`ssl.PROTOCOL_SSLv23`).
+   The SSL version to use (defaults to :data:`ssl.PROTOCOL_SSLv23`).
 
 .. method:: FTP_TLS.auth()
 
@@ -447,7 +441,7 @@ FTP_TLS Objects
    .. versionchanged:: 3.4
       The method now supports hostname check with
       :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
+      :const:`ssl.HAS_SNI`).
 
 .. method:: FTP_TLS.ccc()
 
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 3d2bb8efc95d8e..c731b6fd333275 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -14,8 +14,8 @@ are always available.  They are listed here in alphabetical order.
 | |  :func:`abs`          | |  :func:`enumerate`  | |  :func:`len`        | |  |func-range|_        |
 | |  :func:`aiter`        | |  :func:`eval`       | |  |func-list|_       | |  :func:`repr`         |
 | |  :func:`all`          | |  :func:`exec`       | |  :func:`locals`     | |  :func:`reversed`     |
-| |  :func:`any`          | |                     | |                     | |  :func:`round`        |
-| |  :func:`anext`        | |  **F**              | |  **M**              | |                       |
+| |  :func:`anext`        | |                     | |                     | |  :func:`round`        |
+| |  :func:`any`          | |  **F**              | |  **M**              | |                       |
 | |  :func:`ascii`        | |  :func:`filter`     | |  :func:`map`        | |  **S**                |
 | |                       | |  :func:`float`      | |  :func:`max`        | |  |func-set|_          |
 | |  **B**                | |  :func:`format`     | |  |func-memoryview|_ | |  :func:`setattr`      |
@@ -57,7 +57,8 @@ are always available.  They are listed here in alphabetical order.
 .. function:: abs(x)
 
    Return the absolute value of a number.  The argument may be an
-   integer, a floating point number, or an object implementing :meth:`__abs__`.
+   integer, a floating point number, or an object implementing
+   :meth:`~object.__abs__`.
    If the argument is a complex number, its magnitude is returned.
 
 
@@ -122,7 +123,7 @@ are always available.  They are listed here in alphabetical order.
 
    Convert an integer number to a binary string prefixed with "0b". The result
    is a valid Python expression. If *x* is not a Python :class:`int` object, it
-   has to define an :meth:`__index__` method that returns an integer. Some
+   has to define an :meth:`~object.__index__` method that returns an integer. Some
    examples:
 
       >>> bin(3)
@@ -235,7 +236,7 @@ are always available.  They are listed here in alphabetical order.
    :const:`False` if not.  If this returns ``True``, it is still possible that a
    call fails, but if it is ``False``, calling *object* will never succeed.
    Note that classes are callable (calling a class returns a new instance);
-   instances are callable if their class has a :meth:`__call__` method.
+   instances are callable if their class has a :meth:`~object.__call__` method.
 
    .. versionadded:: 3.2
       This function was first removed in Python 3.0 and then brought back
@@ -285,7 +286,7 @@ are always available.  They are listed here in alphabetical order.
       ``__name__``, ``__qualname__``, ``__doc__`` and ``__annotations__``) and
       have a new ``__wrapped__`` attribute.
 
-   .. versionchanged:: 3.11
+   .. deprecated-removed:: 3.11 3.13
       Class methods can no longer wrap other :term:`descriptors <descriptor>` such as
       :func:`property`.
 
@@ -383,9 +384,9 @@ are always available.  They are listed here in alphabetical order.
    ``0j``.
 
    For a general Python object ``x``, ``complex(x)`` delegates to
-   ``x.__complex__()``.  If ``__complex__()`` is not defined then it falls back
-   to :meth:`__float__`.  If ``__float__()`` is not defined then it falls back
-   to :meth:`__index__`.
+   ``x.__complex__()``.  If :meth:`~object.__complex__` is not defined then it falls back
+   to :meth:`~object.__float__`.  If :meth:`!__float__` is not defined then it falls back
+   to :meth:`~object.__index__`.
 
    .. note::
 
@@ -400,8 +401,8 @@ are always available.  They are listed here in alphabetical order.
       Grouping digits with underscores as in code literals is allowed.
 
    .. versionchanged:: 3.8
-      Falls back to :meth:`__index__` if :meth:`__complex__` and
-      :meth:`__float__` are not defined.
+      Falls back to :meth:`~object.__index__` if :meth:`~object.__complex__` and
+      :meth:`~object.__float__` are not defined.
 
 
 .. function:: delattr(object, name)
@@ -432,15 +433,18 @@ are always available.  They are listed here in alphabetical order.
    Without arguments, return the list of names in the current local scope.  With an
    argument, attempt to return a list of valid attributes for that object.
 
-   If the object has a method named :meth:`__dir__`, this method will be called and
+   If the object has a method named :meth:`~object.__dir__`,
+   this method will be called and
    must return the list of attributes. This allows objects that implement a custom
-   :func:`__getattr__` or :func:`__getattribute__` function to customize the way
+   :func:`~object.__getattr__` or :func:`~object.__getattribute__` function
+   to customize the way
    :func:`dir` reports their attributes.
 
-   If the object does not provide :meth:`__dir__`, the function tries its best to
-   gather information from the object's :attr:`~object.__dict__` attribute, if defined, and
+   If the object does not provide :meth:`~object.__dir__`,
+   the function tries its best to gather information from the object's
+   :attr:`~object.__dict__` attribute, if defined, and
    from its type object.  The resulting list is not necessarily complete and may
-   be inaccurate when the object has a custom :func:`__getattr__`.
+   be inaccurate when the object has a custom :func:`~object.__getattr__`.
 
    The default :func:`dir` mechanism behaves differently with different types of
    objects, as it attempts to produce the most relevant, rather than complete,
@@ -664,7 +668,7 @@ are always available.  They are listed here in alphabetical order.
       sign: "+" | "-"
       infinity: "Infinity" | "inf"
       nan: "nan"
-      digitpart: `digit` (["_"] `digit`)*
+      digitpart: `!digit` (["_"] `!digit`)*
       number: [`digitpart`] "." `digitpart` | `digitpart` ["."]
       exponent: ("e" | "E") ["+" | "-"] `digitpart`
       floatnumber: number [`exponent`]
@@ -681,8 +685,8 @@ are always available.  They are listed here in alphabetical order.
    float, an :exc:`OverflowError` will be raised.
 
    For a general Python object ``x``, ``float(x)`` delegates to
-   ``x.__float__()``.  If ``__float__()`` is not defined then it falls back
-   to :meth:`__index__`.
+   ``x.__float__()``.  If :meth:`~object.__float__` is not defined then it falls back
+   to :meth:`~object.__index__`.
 
    If no argument is given, ``0.0`` is returned.
 
@@ -708,7 +712,7 @@ are always available.  They are listed here in alphabetical order.
       *x* is now a positional-only parameter.
 
    .. versionchanged:: 3.8
-      Falls back to :meth:`__index__` if :meth:`__float__` is not defined.
+      Falls back to :meth:`~object.__index__` if :meth:`~object.__float__` is not defined.
 
 
 .. index::
@@ -727,8 +731,8 @@ are always available.  They are listed here in alphabetical order.
 
    A call to ``format(value, format_spec)`` is translated to
    ``type(value).__format__(value, format_spec)`` which bypasses the instance
-   dictionary when searching for the value's :meth:`__format__` method.  A
-   :exc:`TypeError` exception is raised if the method search reaches
+   dictionary when searching for the value's :meth:`~object.__format__` method.
+   A :exc:`TypeError` exception is raised if the method search reaches
    :mod:`object` and the *format_spec* is non-empty, or if either the
    *format_spec* or the return value are not strings.
 
@@ -792,9 +796,9 @@ are always available.  They are listed here in alphabetical order.
 
    .. note::
 
-      For objects with custom :meth:`__hash__` methods, note that :func:`hash`
+      For objects with custom :meth:`~object.__hash__` methods,
+      note that :func:`hash`
       truncates the return value based on the bit width of the host machine.
-      See :meth:`__hash__` for details.
 
 .. function:: help()
               help(request)
@@ -822,7 +826,7 @@ are always available.  They are listed here in alphabetical order.
 
    Convert an integer number to a lowercase hexadecimal string prefixed with
    "0x". If *x* is not a Python :class:`int` object, it has to define an
-   :meth:`__index__` method that returns an integer. Some examples:
+   :meth:`~object.__index__` method that returns an integer. Some examples:
 
       >>> hex(255)
       '0xff'
@@ -893,9 +897,9 @@ are always available.  They are listed here in alphabetical order.
            int(x, base=10)
 
    Return an integer object constructed from a number or string *x*, or return
-   ``0`` if no arguments are given.  If *x* defines :meth:`__int__`,
-   ``int(x)`` returns ``x.__int__()``.  If *x* defines :meth:`__index__`,
-   it returns ``x.__index__()``.  If *x* defines :meth:`__trunc__`,
+   ``0`` if no arguments are given.  If *x* defines :meth:`~object.__int__`,
+   ``int(x)`` returns ``x.__int__()``.  If *x* defines :meth:`~object.__index__`,
+   it returns ``x.__index__()``.  If *x* defines :meth:`~object.__trunc__`,
    it returns ``x.__trunc__()``.
    For floating point numbers, this truncates towards zero.
 
@@ -932,10 +936,10 @@ are always available.  They are listed here in alphabetical order.
       *x* is now a positional-only parameter.
 
    .. versionchanged:: 3.8
-      Falls back to :meth:`__index__` if :meth:`__int__` is not defined.
+      Falls back to :meth:`~object.__index__` if :meth:`~object.__int__` is not defined.
 
    .. versionchanged:: 3.11
-      The delegation to :meth:`__trunc__` is deprecated.
+      The delegation to :meth:`~object.__trunc__` is deprecated.
 
    .. versionchanged:: 3.11
       :class:`int` string inputs and string representations can be limited to
@@ -982,8 +986,9 @@ are always available.  They are listed here in alphabetical order.
    Return an :term:`iterator` object.  The first argument is interpreted very
    differently depending on the presence of the second argument. Without a
    second argument, *object* must be a collection object which supports the
-   :term:`iterable` protocol (the :meth:`__iter__` method), or it must support
-   the sequence protocol (the :meth:`__getitem__` method with integer arguments
+   :term:`iterable` protocol (the :meth:`~object.__iter__` method),
+   or it must support
+   the sequence protocol (the :meth:`~object.__getitem__` method with integer arguments
    starting at ``0``).  If it does not support either of those protocols,
    :exc:`TypeError` is raised. If the second argument, *sentinel*, is given,
    then *object* must be a callable object.  The iterator created in this case
@@ -1138,7 +1143,7 @@ are always available.  They are listed here in alphabetical order.
 
   Convert an integer number to an octal string prefixed with "0o".  The result
   is a valid Python expression. If *x* is not a Python :class:`int` object, it
-  has to define an :meth:`__index__` method that returns an integer. For
+  has to define an :meth:`~object.__index__` method that returns an integer. For
   example:
 
       >>> oct(8)
@@ -1158,8 +1163,8 @@ are always available.  They are listed here in alphabetical order.
 
   See also :func:`format` for more information.
 
-   .. index::
-      single: file object; open() built-in function
+.. index::
+   single: file object; open() built-in function
 
 .. function:: open(file, mode='r', buffering=-1, encoding=None, errors=None, newline=None, closefd=True, opener=None)
 
@@ -1221,7 +1226,7 @@ are always available.  They are listed here in alphabetical order.
 
    *buffering* is an optional integer used to set the buffering policy.  Pass 0
    to switch buffering off (only allowed in binary mode), 1 to select line
-   buffering (only usable in text mode), and an integer > 1 to indicate the size
+   buffering (only usable when writing in text mode), and an integer > 1 to indicate the size
    in bytes of a fixed-size chunk buffer. Note that specifying a buffer size this
    way applies for binary buffered I/O, but ``TextIOWrapper`` (i.e., files opened
    with ``mode='r+'``) would have another buffering. To disable buffering in
@@ -1231,7 +1236,7 @@ are always available.  They are listed here in alphabetical order.
 
    * Binary files are buffered in fixed-size chunks; the size of the buffer is
      chosen using a heuristic trying to determine the underlying device's "block
-     size" and falling back on :attr:`io.DEFAULT_BUFFER_SIZE`.  On many systems,
+     size" and falling back on :const:`io.DEFAULT_BUFFER_SIZE`.  On many systems,
      the buffer will typically be 4096 or 8192 bytes long.
 
    * "Interactive" text files (files for which :meth:`~io.IOBase.isatty`
@@ -1271,7 +1276,7 @@ are always available.  They are listed here in alphabetical order.
 
    * ``'xmlcharrefreplace'`` is only supported when writing to a file.
      Characters not supported by the encoding are replaced with the
-     appropriate XML character reference ``&#nnn;``.
+     appropriate XML character reference :samp:`&#{nnn};`.
 
    * ``'backslashreplace'`` replaces malformed data by Python's backslashed
      escape sequences.
@@ -1360,28 +1365,28 @@ are always available.  They are listed here in alphabetical order.
 
    .. versionchanged:: 3.3
 
-         * The *opener* parameter was added.
-         * The ``'x'`` mode was added.
-         * :exc:`IOError` used to be raised, it is now an alias of :exc:`OSError`.
-         * :exc:`FileExistsError` is now raised if the file opened in exclusive
-           creation mode (``'x'``) already exists.
+      * The *opener* parameter was added.
+      * The ``'x'`` mode was added.
+      * :exc:`IOError` used to be raised, it is now an alias of :exc:`OSError`.
+      * :exc:`FileExistsError` is now raised if the file opened in exclusive
+        creation mode (``'x'``) already exists.
 
    .. versionchanged:: 3.4
 
-         * The file is now non-inheritable.
+      * The file is now non-inheritable.
 
    .. versionchanged:: 3.5
 
-         * If the system call is interrupted and the signal handler does not raise an
-           exception, the function now retries the system call instead of raising an
-           :exc:`InterruptedError` exception (see :pep:`475` for the rationale).
-         * The ``'namereplace'`` error handler was added.
+      * If the system call is interrupted and the signal handler does not raise an
+        exception, the function now retries the system call instead of raising an
+        :exc:`InterruptedError` exception (see :pep:`475` for the rationale).
+      * The ``'namereplace'`` error handler was added.
 
    .. versionchanged:: 3.6
 
-         * Support added to accept objects implementing :class:`os.PathLike`.
-         * On Windows, opening a console buffer may return a subclass of
-           :class:`io.RawIOBase` other than :class:`io.FileIO`.
+      * Support added to accept objects implementing :class:`os.PathLike`.
+      * On Windows, opening a console buffer may return a subclass of
+        :class:`io.RawIOBase` other than :class:`io.FileIO`.
 
    .. versionchanged:: 3.11
       The ``'U'`` mode has been removed.
@@ -1500,38 +1505,44 @@ are always available.  They are listed here in alphabetical order.
               """Get the current voltage."""
               return self._voltage
 
-   The ``@property`` decorator turns the :meth:`voltage` method into a "getter"
+   The ``@property`` decorator turns the :meth:`!voltage` method into a "getter"
    for a read-only attribute with the same name, and it sets the docstring for
    *voltage* to "Get the current voltage."
 
-   A property object has :attr:`~property.getter`, :attr:`~property.setter`,
-   and :attr:`~property.deleter` methods usable as decorators that create a
-   copy of the property with the corresponding accessor function set to the
-   decorated function.  This is best explained with an example::
+   .. decorator:: property.getter
+   .. decorator:: property.setter
+   .. decorator:: property.deleter
 
-      class C:
-          def __init__(self):
-              self._x = None
+      A property object has ``getter``, ``setter``,
+      and ``deleter`` methods usable as decorators that create a
+      copy of the property with the corresponding accessor function set to the
+      decorated function.  This is best explained with an example:
 
-          @property
-          def x(self):
-              """I'm the 'x' property."""
-              return self._x
+      .. testcode::
 
-          @x.setter
-          def x(self, value):
-              self._x = value
+         class C:
+             def __init__(self):
+                 self._x = None
 
-          @x.deleter
-          def x(self):
-              del self._x
+             @property
+             def x(self):
+                 """I'm the 'x' property."""
+                 return self._x
+
+             @x.setter
+             def x(self, value):
+                 self._x = value
+
+             @x.deleter
+             def x(self):
+                 del self._x
 
-   This code is exactly equivalent to the first example.  Be sure to give the
-   additional functions the same name as the original property (``x`` in this
-   case.)
+      This code is exactly equivalent to the first example.  Be sure to give the
+      additional functions the same name as the original property (``x`` in this
+      case.)
 
-   The returned property object also has the attributes ``fget``, ``fset``, and
-   ``fdel`` corresponding to the constructor arguments.
+      The returned property object also has the attributes ``fget``, ``fset``, and
+      ``fdel`` corresponding to the constructor arguments.
 
    .. versionchanged:: 3.5
       The docstrings of property objects are now writeable.
@@ -1554,7 +1565,8 @@ are always available.  They are listed here in alphabetical order.
    representation is a string enclosed in angle brackets that contains the name
    of the type of the object together with additional information often
    including the name and address of the object.  A class can control what this
-   function returns for its instances by defining a :meth:`__repr__` method.
+   function returns for its instances
+   by defining a :meth:`~object.__repr__` method.
    If :func:`sys.displayhook` is not accessible, this function will raise
    :exc:`RuntimeError`.
 
@@ -1562,9 +1574,9 @@ are always available.  They are listed here in alphabetical order.
 .. function:: reversed(seq)
 
    Return a reverse :term:`iterator`.  *seq* must be an object which has
-   a :meth:`__reversed__` method or supports the sequence protocol (the
-   :meth:`__len__` method and the :meth:`__getitem__` method with integer
-   arguments starting at ``0``).
+   a :meth:`~object.__reversed__` method or supports the sequence protocol (the
+   :meth:`~object.__len__` method and the :meth:`~object.__getitem__` method
+   with integer arguments starting at ``0``).
 
 
 .. function:: round(number, ndigits=None)
@@ -1631,17 +1643,25 @@ are always available.  They are listed here in alphabetical order.
 
 
 .. class:: slice(stop)
-           slice(start, stop, step=1)
+           slice(start, stop, step=None)
 
    Return a :term:`slice` object representing the set of indices specified by
    ``range(start, stop, step)``.  The *start* and *step* arguments default to
-   ``None``.  Slice objects have read-only data attributes :attr:`~slice.start`,
-   :attr:`~slice.stop`, and :attr:`~slice.step` which merely return the argument
-   values (or their default).  They have no other explicit functionality;
-   however, they are used by NumPy and other third-party packages.
+   ``None``.
+
+   .. attribute:: slice.start
+   .. attribute:: slice.stop
+   .. attribute:: slice.step
+
+      Slice objects have read-only data attributes :attr:`!start`,
+      :attr:`!stop`, and :attr:`!step` which merely return the argument
+      values (or their default).  They have no other explicit functionality;
+      however, they are used by NumPy and other third-party packages.
+
    Slice objects are also generated when extended indexing syntax is used.  For
    example: ``a[start:stop:step]`` or ``a[start:stop, i]``.  See
-   :func:`itertools.islice` for an alternate version that returns an iterator.
+   :func:`itertools.islice` for an alternate version that returns an
+   :term:`iterator`.
 
    .. versionchanged:: 3.12
       Slice objects are now :term:`hashable` (provided :attr:`~slice.start`,
@@ -1752,7 +1772,7 @@ are always available.  They are listed here in alphabetical order.
       The *start* parameter can be specified as a keyword argument.
 
    .. versionchanged:: 3.12 Summation of floats switched to an algorithm
-      that gives higher accuracy on most builds.
+      that gives higher accuracy and better commutativity on most builds.
 
 
 .. class:: super()
@@ -1808,7 +1828,8 @@ are always available.  They are listed here in alphabetical order.
 
    Note that :func:`super` is implemented as part of the binding process for
    explicit dotted attribute lookups such as ``super().__getitem__(name)``.
-   It does so by implementing its own :meth:`__getattribute__` method for searching
+   It does so by implementing its own :meth:`~object.__getattribute__` method
+   for searching
    classes in a predictable order that supports cooperative multiple inheritance.
    Accordingly, :func:`super` is undefined for implicit lookups using statements or
    operators such as ``super()[name]``.
diff --git a/Doc/library/functools.rst b/Doc/library/functools.rst
index 3f22e3ff7dd119..9749328ed6e929 100644
--- a/Doc/library/functools.rst
+++ b/Doc/library/functools.rst
@@ -222,8 +222,9 @@ The :mod:`functools` module defines the following functions:
 
    In general, the LRU cache should only be used when you want to reuse
    previously computed values.  Accordingly, it doesn't make sense to cache
-   functions with side-effects, functions that need to create distinct mutable
-   objects on each call, or impure functions such as time() or random().
+   functions with side-effects, functions that need to create
+   distinct mutable objects on each call (such as generators and async functions),
+   or impure functions such as time() or random().
 
    Example of an LRU cache for static web content::
 
@@ -398,25 +399,27 @@ The :mod:`functools` module defines the following functions:
    .. versionadded:: 3.4
 
 
-.. function:: reduce(function, iterable[, initializer])
+.. function:: reduce(function, iterable[, initial], /)
 
    Apply *function* of two arguments cumulatively to the items of *iterable*, from
    left to right, so as to reduce the iterable to a single value.  For example,
    ``reduce(lambda x, y: x+y, [1, 2, 3, 4, 5])`` calculates ``((((1+2)+3)+4)+5)``.
    The left argument, *x*, is the accumulated value and the right argument, *y*, is
-   the update value from the *iterable*.  If the optional *initializer* is present,
+   the update value from the *iterable*.  If the optional *initial* is present,
    it is placed before the items of the iterable in the calculation, and serves as
-   a default when the iterable is empty.  If *initializer* is not given and
+   a default when the iterable is empty.  If *initial* is not given and
    *iterable* contains only one item, the first item is returned.
 
    Roughly equivalent to::
 
-      def reduce(function, iterable, initializer=None):
+      initial_missing = object()
+
+      def reduce(function, iterable, initial=initial_missing, /):
           it = iter(iterable)
-          if initializer is None:
+          if initial is initial_missing:
               value = next(it)
           else:
-              value = initializer
+              value = initial
           for element in it:
               value = function(value, element)
           return value
diff --git a/Doc/library/gc.rst b/Doc/library/gc.rst
index 6d5c64df1a1f3f..82277aa52aee01 100644
--- a/Doc/library/gc.rst
+++ b/Doc/library/gc.rst
@@ -42,14 +42,17 @@ The :mod:`gc` module provides the following functions:
 
    With no arguments, run a full collection.  The optional argument *generation*
    may be an integer specifying which generation to collect (from 0 to 2).  A
-   :exc:`ValueError` is raised if the generation number  is invalid. The number of
-   unreachable objects found is returned.
+   :exc:`ValueError` is raised if the generation number  is invalid. The sum of
+   collected objects and uncollectable objects is returned.
 
    The free lists maintained for a number of built-in types are cleared
    whenever a full collection or collection of the highest generation (2)
    is run.  Not all items in some free lists may be freed due to the
    particular implementation, in particular :class:`float`.
 
+   The effect of calling ``gc.collect()`` while the interpreter is already
+   performing a collection is undefined.
+
 
 .. function:: set_debug(flags)
 
@@ -257,7 +260,7 @@ values but should not rebind them):
 
    .. versionchanged:: 3.4
       Following :pep:`442`, objects with a :meth:`~object.__del__` method don't end
-      up in :attr:`gc.garbage` anymore.
+      up in :data:`gc.garbage` anymore.
 
 .. data:: callbacks
 
diff --git a/Doc/library/getopt.rst b/Doc/library/getopt.rst
index 336deab28cb8a4..ada68b240143e8 100644
--- a/Doc/library/getopt.rst
+++ b/Doc/library/getopt.rst
@@ -7,18 +7,23 @@
 
 **Source code:** :source:`Lib/getopt.py`
 
+.. deprecated:: 3.13
+   The :mod:`getopt` module is :term:`soft deprecated` and will not be
+   developed further; development will continue with the :mod:`argparse`
+   module.
+
 .. note::
 
    The :mod:`getopt` module is a parser for command line options whose API is
-   designed to be familiar to users of the C :c:func:`getopt` function. Users who
-   are unfamiliar with the C :c:func:`getopt` function or who would like to write
+   designed to be familiar to users of the C :c:func:`!getopt` function. Users who
+   are unfamiliar with the C :c:func:`!getopt` function or who would like to write
    less code and get better help and error messages should consider using the
    :mod:`argparse` module instead.
 
 --------------
 
 This module helps scripts to parse the command line arguments in ``sys.argv``.
-It supports the same conventions as the Unix :c:func:`getopt` function (including
+It supports the same conventions as the Unix :c:func:`!getopt` function (including
 the special meanings of arguments of the form '``-``' and '``--``').  Long
 options similar to those supported by GNU software may be used as well via an
 optional third argument.
@@ -33,11 +38,11 @@ exception:
    be parsed, without the leading reference to the running program. Typically, this
    means ``sys.argv[1:]``. *shortopts* is the string of option letters that the
    script wants to recognize, with options that require an argument followed by a
-   colon (``':'``; i.e., the same format that Unix :c:func:`getopt` uses).
+   colon (``':'``; i.e., the same format that Unix :c:func:`!getopt` uses).
 
    .. note::
 
-      Unlike GNU :c:func:`getopt`, after a non-option argument, all further
+      Unlike GNU :c:func:`!getopt`, after a non-option argument, all further
       arguments are considered also non-options. This is similar to the way
       non-GNU Unix systems work.
 
@@ -71,7 +76,7 @@ exception:
    non-option argument is encountered.
 
    If the first character of the option string is ``'+'``, or if the environment
-   variable :envvar:`POSIXLY_CORRECT` is set, then option processing stops as
+   variable :envvar:`!POSIXLY_CORRECT` is set, then option processing stops as
    soon as a non-option argument is encountered.
 
 
@@ -81,9 +86,9 @@ exception:
    an option requiring an argument is given none. The argument to the exception is
    a string indicating the cause of the error.  For long options, an argument given
    to an option which does not require one will also cause this exception to be
-   raised.  The attributes :attr:`msg` and :attr:`opt` give the error message and
+   raised.  The attributes :attr:`!msg` and :attr:`!opt` give the error message and
    related option; if there is no specific option to which the exception relates,
-   :attr:`opt` is an empty string.
+   :attr:`!opt` is an empty string.
 
 .. XXX deprecated?
 .. exception:: error
diff --git a/Doc/library/getpass.rst b/Doc/library/getpass.rst
index d5bbe67fb30a62..54c84d45a59856 100644
--- a/Doc/library/getpass.rst
+++ b/Doc/library/getpass.rst
@@ -43,10 +43,13 @@ The :mod:`getpass` module provides two functions:
    Return the "login name" of the user.
 
    This function checks the environment variables :envvar:`LOGNAME`,
-   :envvar:`USER`, :envvar:`LNAME` and :envvar:`USERNAME`, in order, and
+   :envvar:`USER`, :envvar:`!LNAME` and :envvar:`USERNAME`, in order, and
    returns the value of the first one which is set to a non-empty string.  If
    none are set, the login name from the password database is returned on
-   systems which support the :mod:`pwd` module, otherwise, an exception is
-   raised.
+   systems which support the :mod:`pwd` module, otherwise, an :exc:`OSError`
+   is raised.
 
    In general, this function should be preferred over :func:`os.getlogin()`.
+
+   .. versionchanged:: 3.13
+      Previously, various exceptions beyond just :exc:`OSError` were raised.
diff --git a/Doc/library/gettext.rst b/Doc/library/gettext.rst
index 747f8703b750ec..41beac3e0c7396 100644
--- a/Doc/library/gettext.rst
+++ b/Doc/library/gettext.rst
@@ -58,7 +58,7 @@ class-based API instead.
 
    Return the localized translation of *message*, based on the current global
    domain, language, and locale directory.  This function is usually aliased as
-   :func:`_` in the local namespace (see examples below).
+   :func:`!_` in the local namespace (see examples below).
 
 
 .. function:: dgettext(domain, message)
@@ -98,7 +98,7 @@ class-based API instead.
    .. versionadded:: 3.8
 
 
-Note that GNU :program:`gettext` also defines a :func:`dcgettext` method, but
+Note that GNU :program:`gettext` also defines a :func:`!dcgettext` method, but
 this was deemed not useful and so it is currently unimplemented.
 
 Here's an example of typical usage for this API::
@@ -119,7 +119,7 @@ greater convenience than the GNU :program:`gettext` API.  It is the recommended
 way of localizing your Python applications and modules.  :mod:`!gettext` defines
 a :class:`GNUTranslations` class which implements the parsing of GNU :file:`.mo` format
 files, and has methods for returning strings. Instances of this class can also
-install themselves in the built-in namespace as the function :func:`_`.
+install themselves in the built-in namespace as the function :func:`!_`.
 
 
 .. function:: find(domain, localedir=None, languages=None, all=False)
@@ -150,15 +150,12 @@ install themselves in the built-in namespace as the function :func:`_`.
 
 .. function:: translation(domain, localedir=None, languages=None, class_=None, fallback=False)
 
-   Return a :class:`*Translations` instance based on the *domain*, *localedir*,
+   Return a ``*Translations`` instance based on the *domain*, *localedir*,
    and *languages*, which are first passed to :func:`find` to get a list of the
    associated :file:`.mo` file paths.  Instances with identical :file:`.mo` file
    names are cached.  The actual class instantiated is *class_* if
    provided, otherwise :class:`GNUTranslations`.  The class's constructor must
-   take a single :term:`file object` argument.  If provided, *codeset* will change
-   the charset used to encode translated strings in the
-   :meth:`~NullTranslations.lgettext` and :meth:`~NullTranslations.lngettext`
-   methods.
+   take a single :term:`file object` argument.
 
    If multiple files are found, later files are used as fallbacks for earlier ones.
    To allow setting the fallback, :func:`copy.copy` is used to clone each
@@ -170,26 +167,26 @@ install themselves in the built-in namespace as the function :func:`_`.
    :class:`NullTranslations` instance if *fallback* is true.
 
    .. versionchanged:: 3.3
-      :exc:`IOError` used to be raised instead of :exc:`OSError`.
+      :exc:`IOError` used to be raised, it is now an alias of :exc:`OSError`.
 
    .. versionchanged:: 3.11
       *codeset* parameter is removed.
 
 .. function:: install(domain, localedir=None, *, names=None)
 
-   This installs the function :func:`_` in Python's builtins namespace, based on
+   This installs the function :func:`!_` in Python's builtins namespace, based on
    *domain* and *localedir* which are passed to the function :func:`translation`.
 
    For the *names* parameter, please see the description of the translation
    object's :meth:`~NullTranslations.install` method.
 
    As seen below, you usually mark the strings in your application that are
-   candidates for translation, by wrapping them in a call to the :func:`_`
+   candidates for translation, by wrapping them in a call to the :func:`!_`
    function, like this::
 
       print(_('This string will be translated.'))
 
-   For convenience, you want the :func:`_` function to be installed in Python's
+   For convenience, you want the :func:`!_` function to be installed in Python's
    builtins namespace, so it is easily accessible in all modules of your
    application.
 
@@ -260,7 +257,7 @@ are the methods of :class:`!NullTranslations`:
 
    .. method:: info()
 
-      Return the "protected" :attr:`_info` variable, a dictionary containing
+      Return a dictionary containing
       the metadata found in the message catalog file.
 
 
@@ -276,20 +273,20 @@ are the methods of :class:`!NullTranslations`:
 
       If the *names* parameter is given, it must be a sequence containing the
       names of functions you want to install in the builtins namespace in
-      addition to :func:`_`.  Supported names are ``'gettext'``, ``'ngettext'``,
-      ``'pgettext'``, ``'npgettext'``, ``'lgettext'``, and ``'lngettext'``.
+      addition to :func:`!_`.  Supported names are ``'gettext'``, ``'ngettext'``,
+      ``'pgettext'``, and ``'npgettext'``.
 
       Note that this is only one way, albeit the most convenient way, to make
-      the :func:`_` function available to your application.  Because it affects
+      the :func:`!_` function available to your application.  Because it affects
       the entire application globally, and specifically the built-in namespace,
-      localized modules should never install :func:`_`. Instead, they should use
-      this code to make :func:`_` available to their module::
+      localized modules should never install :func:`!_`. Instead, they should use
+      this code to make :func:`!_` available to their module::
 
          import gettext
          t = gettext.translation('mymodule', ...)
          _ = t.gettext
 
-      This puts :func:`_` only in the module's global namespace and so only
+      This puts :func:`!_` only in the module's global namespace and so only
       affects calls within this module.
 
       .. versionchanged:: 3.8
@@ -299,9 +296,9 @@ are the methods of :class:`!NullTranslations`:
 The :class:`GNUTranslations` class
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-The :mod:`gettext` module provides one additional class derived from
+The :mod:`!gettext` module provides one additional class derived from
 :class:`NullTranslations`: :class:`GNUTranslations`.  This class overrides
-:meth:`_parse` to enable reading GNU :program:`gettext` format :file:`.mo` files
+:meth:`!_parse` to enable reading GNU :program:`gettext` format :file:`.mo` files
 in both big-endian and little-endian format.
 
 :class:`GNUTranslations` parses optional metadata out of the translation
@@ -309,16 +306,16 @@ catalog. It is convention with GNU :program:`gettext` to include metadata as
 the translation for the empty string. This metadata is in :rfc:`822`\ -style
 ``key: value`` pairs, and should contain the ``Project-Id-Version`` key.  If the
 key ``Content-Type`` is found, then the ``charset`` property is used to
-initialize the "protected" :attr:`_charset` instance variable, defaulting to
+initialize the "protected" :attr:`!_charset` instance variable, defaulting to
 ``None`` if not found.  If the charset encoding is specified, then all message
 ids and message strings read from the catalog are converted to Unicode using
 this encoding, else ASCII is assumed.
 
-Since message ids are read as Unicode strings too, all :meth:`*gettext` methods
+Since message ids are read as Unicode strings too, all ``*gettext()`` methods
 will assume message ids as Unicode strings, not byte strings.
 
 The entire set of key/value pairs are placed into a dictionary and set as the
-"protected" :attr:`_info` instance variable.
+"protected" :attr:`!_info` instance variable.
 
 If the :file:`.mo` file's magic number is invalid, the major version number is
 unexpected, or if other problems occur while reading the file, instantiating a
@@ -404,13 +401,14 @@ version has a slightly different API.  Its documented usage was::
    _ = cat.gettext
    print(_('hello world'))
 
-For compatibility with this older module, the function :func:`Catalog` is an
+For compatibility with this older module, the function :func:`!Catalog` is an
 alias for the :func:`translation` function described above.
 
 One difference between this module and Henstridge's: his catalog objects
 supported access through a mapping API, but this appears to be unused and so is
 not currently supported.
 
+.. _i18n-howto:
 
 Internationalizing your programs and modules
 --------------------------------------------
@@ -431,7 +429,7 @@ take the following steps:
 
 In order to prepare your code for I18N, you need to look at all the strings in
 your files.  Any string that needs to be translated should be marked by wrapping
-it in ``_('...')`` --- that is, a call to the function :func:`_`.  For example::
+it in ``_('...')`` --- that is, a call to the function :func:`_ <gettext>`.  For example::
 
    filename = 'mylog.txt'
    message = _('writing a log message')
@@ -503,7 +501,7 @@ module::
 Localizing your application
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-If you are localizing your application, you can install the :func:`_` function
+If you are localizing your application, you can install the :func:`!_` function
 globally into the built-in namespace, usually in the main driver file of your
 application.  This will let all your application-specific files just use
 ``_('...')`` without having to explicitly install it in each file.
@@ -580,13 +578,13 @@ Here is one way you can handle this situation::
    for a in animals:
        print(_(a))
 
-This works because the dummy definition of :func:`_` simply returns the string
+This works because the dummy definition of :func:`!_` simply returns the string
 unchanged.  And this dummy definition will temporarily override any definition
-of :func:`_` in the built-in namespace (until the :keyword:`del` command). Take
-care, though if you have a previous definition of :func:`_` in the local
+of :func:`!_` in the built-in namespace (until the :keyword:`del` command). Take
+care, though if you have a previous definition of :func:`!_` in the local
 namespace.
 
-Note that the second use of :func:`_` will not identify "a" as being
+Note that the second use of :func:`!_` will not identify "a" as being
 translatable to the :program:`gettext` program, because the parameter
 is not a string literal.
 
@@ -605,13 +603,13 @@ Another way to handle this is with the following example::
        print(_(a))
 
 In this case, you are marking translatable strings with the function
-:func:`N_`, which won't conflict with any definition of :func:`_`.
+:func:`!N_`, which won't conflict with any definition of :func:`!_`.
 However, you will need to teach your message extraction program to
-look for translatable strings marked with :func:`N_`. :program:`xgettext`,
+look for translatable strings marked with :func:`!N_`. :program:`xgettext`,
 :program:`pygettext`, ``pybabel extract``, and :program:`xpot` all
 support this through the use of the :option:`!-k` command-line switch.
-The choice of :func:`N_` here is totally arbitrary; it could have just
-as easily been :func:`MarkThisStringForTranslation`.
+The choice of :func:`!N_` here is totally arbitrary; it could have just
+as easily been :func:`!MarkThisStringForTranslation`.
 
 
 Acknowledgements
@@ -638,9 +636,9 @@ implementations, and valuable experience to the creation of this module:
 
 .. rubric:: Footnotes
 
-.. [#] The default locale directory is system dependent; for example, on RedHat Linux
+.. [#] The default locale directory is system dependent; for example, on Red Hat Linux
    it is :file:`/usr/share/locale`, but on Solaris it is :file:`/usr/lib/locale`.
-   The :mod:`gettext` module does not try to support these system dependent
+   The :mod:`!gettext` module does not try to support these system dependent
    defaults; instead its default is :file:`{sys.base_prefix}/share/locale` (see
    :data:`sys.base_prefix`). For this reason, it is always best to call
    :func:`bindtextdomain` with an explicit absolute path at the start of your
diff --git a/Doc/library/glob.rst b/Doc/library/glob.rst
index 0e4cfe7ebed797..6e4f72c19ff4c9 100644
--- a/Doc/library/glob.rst
+++ b/Doc/library/glob.rst
@@ -34,9 +34,7 @@ unlike :func:`fnmatch.fnmatch` or :func:`pathlib.Path.glob`.
 For a literal match, wrap the meta-characters in brackets.
 For example, ``'[?]'`` matches the character ``'?'``.
 
-
-.. seealso::
-   The :mod:`pathlib` module offers high-level path objects.
+The :mod:`glob` module defines the following functions:
 
 
 .. function:: glob(pathname, *, root_dir=None, dir_fd=None, recursive=False, \
@@ -117,7 +115,48 @@ For example, ``'[?]'`` matches the character ``'?'``.
    .. versionadded:: 3.4
 
 
-For example, consider a directory containing the following files:
+.. function:: translate(pathname, *, recursive=False, include_hidden=False, seps=None)
+
+   Convert the given path specification to a regular expression for use with
+   :func:`re.match`. The path specification can contain shell-style wildcards.
+
+   For example:
+
+      >>> import glob, re
+      >>>
+      >>> regex = glob.translate('**/*.txt', recursive=True, include_hidden=True)
+      >>> regex
+      '(?s:(?:.+/)?[^/]*\\.txt)\\Z'
+      >>> reobj = re.compile(regex)
+      >>> reobj.match('foo/bar/baz.txt')
+      <re.Match object; span=(0, 15), match='foo/bar/baz.txt'>
+
+   Path separators and segments are meaningful to this function, unlike
+   :func:`fnmatch.translate`. By default wildcards do not match path
+   separators, and ``*`` pattern segments match precisely one path segment.
+
+   If *recursive* is true, the pattern segment "``**``" will match any number
+   of path segments. If "``**``" occurs in any position other than a full
+   pattern segment, :exc:`ValueError` is raised.
+
+   If *include_hidden* is true, wildcards can match path segments that start
+   with a dot (``.``).
+
+   A sequence of path separators may be supplied to the *seps* argument. If
+   not given, :data:`os.sep` and :data:`~os.altsep` (if available) are used.
+
+   .. seealso::
+
+     :meth:`pathlib.PurePath.match` and :meth:`pathlib.Path.glob` methods,
+     which call this function to implement pattern matching and globbing.
+
+   .. versionadded:: 3.13
+
+
+Examples
+--------
+
+Consider a directory containing the following files:
 :file:`1.gif`, :file:`2.txt`, :file:`card.gif` and a subdirectory :file:`sub`
 which contains only the file :file:`3.txt`.  :func:`glob` will produce
 the following results.  Notice how any leading components of the path are
@@ -146,6 +185,7 @@ default. For example, consider a directory containing :file:`card.gif` and
    ['.card.gif']
 
 .. seealso::
+   The :mod:`fnmatch` module offers shell-style filename (not path) expansion.
 
-   Module :mod:`fnmatch`
-      Shell-style filename (not path) expansion
+.. seealso::
+   The :mod:`pathlib` module offers high-level path objects.
diff --git a/Doc/library/graphlib.rst b/Doc/library/graphlib.rst
index fe7932e7a61cb5..5414d6370b78ce 100644
--- a/Doc/library/graphlib.rst
+++ b/Doc/library/graphlib.rst
@@ -37,14 +37,14 @@
    In the general case, the steps required to perform the sorting of a given
    graph are as follows:
 
-         * Create an instance of the :class:`TopologicalSorter` with an optional
-           initial graph.
-         * Add additional nodes to the graph.
-         * Call :meth:`~TopologicalSorter.prepare` on the graph.
-         * While :meth:`~TopologicalSorter.is_active` is ``True``, iterate over
-           the nodes returned by :meth:`~TopologicalSorter.get_ready` and
-           process them. Call :meth:`~TopologicalSorter.done` on each node as it
-           finishes processing.
+   * Create an instance of the :class:`TopologicalSorter` with an optional
+     initial graph.
+   * Add additional nodes to the graph.
+   * Call :meth:`~TopologicalSorter.prepare` on the graph.
+   * While :meth:`~TopologicalSorter.is_active` is ``True``, iterate over
+     the nodes returned by :meth:`~TopologicalSorter.get_ready` and
+     process them. Call :meth:`~TopologicalSorter.done` on each node as it
+     finishes processing.
 
    In case just an immediate sorting of the nodes in the graph is required and
    no parallelism is involved, the convenience method
@@ -115,7 +115,7 @@
       :meth:`TopologicalSorter.done` is less than the number that have been
       returned by :meth:`TopologicalSorter.get_ready`.
 
-      The :meth:`~TopologicalSorter.__bool__` method of this class defers to
+      The :meth:`~object.__bool__` method of this class defers to
       this function, so instead of::
 
           if ts.is_active():
@@ -204,7 +204,7 @@ The :mod:`graphlib` module defines the following exception classes:
    in the working graph. If multiple cycles exist, only one undefined choice among them will
    be reported and included in the exception.
 
-   The detected cycle can be accessed via the second element in the :attr:`~CycleError.args`
+   The detected cycle can be accessed via the second element in the :attr:`~BaseException.args`
    attribute of the exception instance and consists in a list of nodes, such that each node is,
    in the graph, an immediate predecessor of the next node in the list. In the reported list,
    the first and the last node will be the same, to make it clear that it is cyclic.
diff --git a/Doc/library/grp.rst b/Doc/library/grp.rst
index 14af744e3ae8f4..274a353103b488 100644
--- a/Doc/library/grp.rst
+++ b/Doc/library/grp.rst
@@ -10,7 +10,7 @@
 This module provides access to the Unix group database. It is available on all
 Unix versions.
 
-.. include:: ../includes/wasm-notavail.rst
+.. availability:: Unix, not Emscripten, not WASI.
 
 Group database entries are reported as a tuple-like object, whose attributes
 correspond to the members of the ``group`` structure (Attribute field below, see
@@ -63,7 +63,3 @@ It defines the following items:
 
    Module :mod:`pwd`
       An interface to the user database, similar to this.
-
-   Module :mod:`spwd`
-      An interface to the shadow password database, similar to this.
-
diff --git a/Doc/library/gzip.rst b/Doc/library/gzip.rst
index 06cbd2567a0bc6..50cde09fa10a9d 100644
--- a/Doc/library/gzip.rst
+++ b/Doc/library/gzip.rst
@@ -70,7 +70,7 @@ The module defines the following items:
 .. class:: GzipFile(filename=None, mode=None, compresslevel=9, fileobj=None, mtime=None)
 
    Constructor for the :class:`GzipFile` class, which simulates most of the
-   methods of a :term:`file object`, with the exception of the :meth:`truncate`
+   methods of a :term:`file object`, with the exception of the :meth:`~io.IOBase.truncate`
    method.  At least one of *fileobj* and *filename* must be given a non-trivial
    value.
 
@@ -105,7 +105,7 @@ The module defines the following items:
    should only be provided in compression mode.  If omitted or ``None``, the
    current time is used.  See the :attr:`mtime` attribute for more details.
 
-   Calling a :class:`GzipFile` object's :meth:`close` method does not close
+   Calling a :class:`GzipFile` object's :meth:`!close` method does not close
    *fileobj*, since you might wish to append more material after the compressed
    data.  This also allows you to pass an :class:`io.BytesIO` object opened for
    writing as *fileobj*, and retrieve the resulting memory buffer using the
@@ -113,7 +113,7 @@ The module defines the following items:
 
    :class:`GzipFile` supports the :class:`io.BufferedIOBase` interface,
    including iteration and the :keyword:`with` statement.  Only the
-   :meth:`truncate` method isn't implemented.
+   :meth:`~io.IOBase.truncate` method isn't implemented.
 
    :class:`GzipFile` also provides the following method and attribute:
 
@@ -250,6 +250,8 @@ Example of how to GZIP compress a binary string::
 
 .. program:: gzip
 
+.. _gzip-cli:
+
 Command Line Interface
 ----------------------
 
@@ -266,23 +268,23 @@ Once executed the :mod:`gzip` module keeps the input file(s).
 Command line options
 ^^^^^^^^^^^^^^^^^^^^
 
-.. cmdoption:: file
+.. option:: file
 
-   If *file* is not specified, read from :attr:`sys.stdin`.
+   If *file* is not specified, read from :data:`sys.stdin`.
 
-.. cmdoption:: --fast
+.. option:: --fast
 
    Indicates the fastest compression method (less compression).
 
-.. cmdoption:: --best
+.. option:: --best
 
    Indicates the slowest compression method (best compression).
 
-.. cmdoption:: -d, --decompress
+.. option:: -d, --decompress
 
    Decompress the given file.
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    Show the help message.
 
diff --git a/Doc/library/hashlib.rst b/Doc/library/hashlib.rst
index 797870b9d7e260..761dd84edee299 100644
--- a/Doc/library/hashlib.rst
+++ b/Doc/library/hashlib.rst
@@ -11,7 +11,7 @@
 
 .. index::
    single: message digest, MD5
-   single: secure hash algorithm, SHA1, SHA224, SHA256, SHA384, SHA512
+   single: secure hash algorithm, SHA1, SHA2, SHA224, SHA256, SHA384, SHA512, SHA3, Shake, Blake2
 
 .. testsetup::
 
@@ -22,7 +22,8 @@
 
 This module implements a common interface to many different secure hash and
 message digest algorithms.  Included are the FIPS secure hash algorithms SHA1,
-SHA224, SHA256, SHA384, and SHA512 (defined in FIPS 180-2) as well as RSA's MD5
+SHA224, SHA256, SHA384, SHA512, (defined in `the FIPS 180-4 standard`_),
+the SHA-3 series (defined in `the FIPS 202 standard`_) as well as RSA's MD5
 algorithm (defined in internet :rfc:`1321`).  The terms "secure hash" and
 "message digest" are interchangeable.  Older algorithms were called message
 digests.  The modern term is secure hash.
@@ -32,11 +33,6 @@ digests.  The modern term is secure hash.
    If you want the adler32 or crc32 hash functions, they are available in
    the :mod:`zlib` module.
 
-.. warning::
-
-   Some algorithms have known hash collision weaknesses, refer to the "See
-   also" section at the end.
-
 
 .. _hash-algorithms:
 
@@ -44,38 +40,43 @@ Hash algorithms
 ---------------
 
 There is one constructor method named for each type of :dfn:`hash`.  All return
-a hash object with the same simple interface. For example: use :func:`sha256` to
-create a SHA-256 hash object. You can now feed this object with :term:`bytes-like
-objects <bytes-like object>` (normally :class:`bytes`) using the :meth:`update` method.
-At any point you can ask it for the :dfn:`digest` of the
-concatenation of the data fed to it so far using the :meth:`digest` or
-:meth:`hexdigest` methods.
+a hash object with the same simple interface. For example: use :func:`sha256`
+to create a SHA-256 hash object. You can now feed this object with
+:term:`bytes-like objects <bytes-like object>` (normally :class:`bytes`) using
+the :meth:`update<hash.update>` method.  At any point you can ask it for the
+:dfn:`digest` of the concatenation of the data fed to it so far using the
+:meth:`digest()<hash.digest>` or :meth:`hexdigest()<hash.hexdigest>` methods.
 
-.. note::
+To allow multithreading, the Python :term:`GIL` is released while computing a
+hash supplied more than 2047 bytes of data at once in its constructor or
+:meth:`.update<hash.update>` method.
 
-   For better multithreading performance, the Python :term:`GIL` is released for
-   data larger than 2047 bytes at object creation or on update.
-
-.. note::
-
-   Feeding string objects into :meth:`update` is not supported, as hashes work
-   on bytes, not on characters.
 
 .. index:: single: OpenSSL; (use in module hashlib)
 
 Constructors for hash algorithms that are always present in this module are
-:func:`sha1`, :func:`sha224`, :func:`sha256`, :func:`sha384`,
-:func:`sha512`, :func:`blake2b`, and :func:`blake2s`.
-:func:`md5` is normally available as well, though it
-may be missing or blocked if you are using a rare "FIPS compliant" build of Python.
-Additional algorithms may also be available depending upon the OpenSSL
-library that Python uses on your platform. On most platforms the
+:func:`sha1`, :func:`sha224`, :func:`sha256`, :func:`sha384`, :func:`sha512`,
 :func:`sha3_224`, :func:`sha3_256`, :func:`sha3_384`, :func:`sha3_512`,
-:func:`shake_128`, :func:`shake_256` are also available.
+:func:`shake_128`, :func:`shake_256`, :func:`blake2b`, and :func:`blake2s`.
+:func:`md5` is normally available as well, though it may be missing or blocked
+if you are using a rare "FIPS compliant" build of Python.
+These correspond to :data:`algorithms_guaranteed`.
+
+Additional algorithms may also be available if your Python distribution's
+:mod:`hashlib` was linked against a build of OpenSSL that provides others.
+Others *are not guaranteed available* on all installations and will only be
+accessible by name via :func:`new`.  See :data:`algorithms_available`.
+
+.. warning::
+
+   Some algorithms have known hash collision weaknesses (including MD5 and
+   SHA1). Refer to `Attacks on cryptographic hash algorithms`_ and the
+   `hashlib-seealso`_ section at the end of this document.
 
 .. versionadded:: 3.6
    SHA3 (Keccak) and SHAKE constructors :func:`sha3_224`, :func:`sha3_256`,
-   :func:`sha3_384`, :func:`sha3_512`, :func:`shake_128`, :func:`shake_256`.
+   :func:`sha3_384`, :func:`sha3_512`, :func:`shake_128`, :func:`shake_256`
+   were added.
 
 .. versionadded:: 3.6
    :func:`blake2b` and :func:`blake2s` were added.
@@ -89,10 +90,19 @@ library that Python uses on your platform. On most platforms the
    that the hashing algorithm is not used in a security context, e.g. as a
    non-cryptographic one-way compression function.
 
-   Hashlib now uses SHA3 and SHAKE from OpenSSL 1.1.1 and newer.
+.. versionchanged:: 3.9
+   Hashlib now uses SHA3 and SHAKE from OpenSSL if it provides it.
+
+.. versionchanged:: 3.12
+   For any of the MD5, SHA1, SHA2, or SHA3 algorithms that the linked
+   OpenSSL does not provide we fall back to a verified implementation from
+   the `HACL\* project`_.
 
-For example, to obtain the digest of the byte string ``b"Nobody inspects the
-spammish repetition"``::
+Usage
+-----
+
+To obtain the digest of the byte string ``b"Nobody inspects the spammish
+repetition"``::
 
    >>> import hashlib
    >>> m = hashlib.sha256()
@@ -108,22 +118,42 @@ More condensed:
    >>> hashlib.sha256(b"Nobody inspects the spammish repetition").hexdigest()
    '031edd7d41651593c5fe5c006fa5752b37fddff7bc4e843aa6af0c950f4b9406'
 
-.. function:: new(name[, data], *, usedforsecurity=True)
+Constructors
+------------
+
+.. function:: new(name[, data], \*, usedforsecurity=True)
 
    Is a generic constructor that takes the string *name* of the desired
    algorithm as its first parameter.  It also exists to allow access to the
    above listed hashes as well as any other algorithms that your OpenSSL
-   library may offer.  The named constructors are much faster than :func:`new`
-   and should be preferred.
+   library may offer.
 
-Using :func:`new` with an algorithm provided by OpenSSL:
+Using :func:`new` with an algorithm name:
 
    >>> h = hashlib.new('sha256')
    >>> h.update(b"Nobody inspects the spammish repetition")
    >>> h.hexdigest()
    '031edd7d41651593c5fe5c006fa5752b37fddff7bc4e843aa6af0c950f4b9406'
 
-Hashlib provides the following constant attributes:
+
+.. function:: md5([, data], *, usedforsecurity=True)
+.. function:: sha1([, data], *, usedforsecurity=True)
+.. function:: sha224([, data], *, usedforsecurity=True)
+.. function:: sha256([, data], *, usedforsecurity=True)
+.. function:: sha384([, data], *, usedforsecurity=True)
+.. function:: sha512([, data], *, usedforsecurity=True)
+.. function:: sha3_224([, data], *, usedforsecurity=True)
+.. function:: sha3_256([, data], *, usedforsecurity=True)
+.. function:: sha3_384([, data], *, usedforsecurity=True)
+.. function:: sha3_512([, data], *, usedforsecurity=True)
+
+Named constructors such as these are faster than passing an algorithm name to
+:func:`new`.
+
+Attributes
+----------
+
+Hashlib provides the following constant module attributes:
 
 .. data:: algorithms_guaranteed
 
@@ -144,10 +174,12 @@ Hashlib provides the following constant attributes:
 
    .. versionadded:: 3.2
 
+Hash Objects
+------------
+
 The following values are provided as constant attributes of the hash objects
 returned by the constructors:
 
-
 .. data:: hash.digest_size
 
    The size of the resulting hash in bytes.
@@ -178,11 +210,6 @@ A hash object has the following methods:
    concatenation of all the arguments: ``m.update(a); m.update(b)`` is
    equivalent to ``m.update(a+b)``.
 
-   .. versionchanged:: 3.1
-      The Python GIL is released to allow other threads to run while hash
-      updates on data larger than 2047 bytes is taking place when using hash
-      algorithms supplied by OpenSSL.
-
 
 .. method:: hash.digest()
 
@@ -207,6 +234,9 @@ A hash object has the following methods:
 SHAKE variable length digests
 -----------------------------
 
+.. function:: shake_128([, data], *, usedforsecurity=True)
+.. function:: shake_256([, data], *, usedforsecurity=True)
+
 The :func:`shake_128` and :func:`shake_256` algorithms provide variable
 length digests with length_in_bits//2 up to 128 or 256 bits of security.
 As such, their digest methods require a length. Maximum length is not limited
@@ -214,7 +244,7 @@ by the SHAKE algorithm.
 
 .. method:: shake.digest(length)
 
-   Return the digest of the data passed to the :meth:`update` method so far.
+   Return the digest of the data passed to the :meth:`~hash.update` method so far.
    This is a bytes object of size *length* which may contain bytes in
    the whole range from 0 to 255.
 
@@ -223,8 +253,13 @@ by the SHAKE algorithm.
 
    Like :meth:`digest` except the digest is returned as a string object of
    double length, containing only hexadecimal digits.  This may be used to
-   exchange the value safely in email or other non-binary environments.
+   exchange the value in email or other non-binary environments.
 
+Example use:
+
+   >>> h = hashlib.shake_256(b'Nobody inspects the spammish repetition')
+   >>> h.hexdigest(20)
+   '44709d6fcb83d92a76dcb0b668c98e1b1d3dafe7'
 
 File hashing
 ------------
@@ -329,6 +364,8 @@ include a `salt <https://en.wikipedia.org/wiki/Salt_%28cryptography%29>`_.
    .. versionadded:: 3.6
 
 
+.. _hashlib-blake2:
+
 BLAKE2
 ------
 
@@ -472,9 +509,9 @@ Simple hashing
 
 To calculate hash of some data, you should first construct a hash object by
 calling the appropriate constructor function (:func:`blake2b` or
-:func:`blake2s`), then update it with the data by calling :meth:`update` on the
+:func:`blake2s`), then update it with the data by calling :meth:`~hash.update` on the
 object, and, finally, get the digest out of the object by calling
-:meth:`digest` (or :meth:`hexdigest` for hex-encoded string).
+:meth:`~hash.digest` (or :meth:`~hash.hexdigest` for hex-encoded string).
 
     >>> from hashlib import blake2b
     >>> h = blake2b()
@@ -768,13 +805,19 @@ Domain Dedication 1.0 Universal:
 .. _BLAKE2: https://www.blake2.net
 .. _HMAC: https://en.wikipedia.org/wiki/Hash-based_message_authentication_code
 .. _BLAKE: https://web.archive.org/web/20200918190133/https://131002.net/blake/
-.. _SHA-3: https://en.wikipedia.org/wiki/NIST_hash_function_competition
+.. _SHA-3: https://en.wikipedia.org/wiki/Secure_Hash_Algorithms
 .. _ChaCha: https://cr.yp.to/chacha.html
 .. _pyblake2: https://pythonhosted.org/pyblake2/
 .. _NIST-SP-800-132: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf
 .. _stackexchange pbkdf2 iterations question: https://security.stackexchange.com/questions/3959/recommended-of-iterations-when-using-pbkdf2-sha256/
+.. _Attacks on cryptographic hash algorithms: https://en.wikipedia.org/wiki/Cryptographic_hash_function#Attacks_on_cryptographic_hash_algorithms
+.. _the FIPS 180-4 standard: https://csrc.nist.gov/publications/detail/fips/180/4/final
+.. _the FIPS 202 standard: https://csrc.nist.gov/publications/detail/fips/202/final
+.. _HACL\* project: https://github.com/hacl-star/hacl-star
 
 
+.. _hashlib-seealso:
+
 .. seealso::
 
    Module :mod:`hmac`
@@ -783,15 +826,18 @@ Domain Dedication 1.0 Universal:
    Module :mod:`base64`
       Another way to encode binary hashes for non-binary environments.
 
-   https://www.blake2.net
-      Official BLAKE2 website.
+   https://nvlpubs.nist.gov/nistpubs/fips/nist.fips.180-4.pdf
+      The FIPS 180-4 publication on Secure Hash Algorithms.
 
-   https://csrc.nist.gov/csrc/media/publications/fips/180/2/archive/2002-08-01/documents/fips180-2.pdf
-      The FIPS 180-2 publication on Secure Hash Algorithms.
+   https://csrc.nist.gov/publications/detail/fips/202/final
+      The FIPS 202 publication on the SHA-3 Standard.
+
+   https://www.blake2.net/
+      Official BLAKE2 website.
 
-   https://en.wikipedia.org/wiki/Cryptographic_hash_function#Cryptographic_hash_algorithms
-      Wikipedia article with information on which algorithms have known issues and
-      what that means regarding their use.
+   https://en.wikipedia.org/wiki/Cryptographic_hash_function
+      Wikipedia article with information on which algorithms have known issues
+      and what that means regarding their use.
 
    https://www.ietf.org/rfc/rfc8018.txt
       PKCS #5: Password-Based Cryptography Specification Version 2.1
diff --git a/Doc/library/html.parser.rst b/Doc/library/html.parser.rst
index 03aff25ce6117a..d35090111e0822 100644
--- a/Doc/library/html.parser.rst
+++ b/Doc/library/html.parser.rst
@@ -173,7 +173,7 @@ implementations do nothing (except for :meth:`~HTMLParser.handle_startendtag`):
 .. method:: HTMLParser.handle_charref(name)
 
    This method is called to process decimal and hexadecimal numeric character
-   references of the form ``&#NNN;`` and ``&#xNNN;``.  For example, the decimal
+   references of the form :samp:`&#{NNN};` and :samp:`&#x{NNN};`.  For example, the decimal
    equivalent for ``&gt;`` is ``&#62;``, whereas the hexadecimal is ``&#x3E;``;
    in this case the method will receive ``'62'`` or ``'x3E'``.  This method
    is never called if *convert_charrefs* is ``True``.
diff --git a/Doc/library/http.client.rst b/Doc/library/http.client.rst
index bf1f2e3920783d..c46314fc5e253b 100644
--- a/Doc/library/http.client.rst
+++ b/Doc/library/http.client.rst
@@ -83,7 +83,7 @@ The module provides the following classes:
 
    .. versionchanged:: 3.2
       This class now supports HTTPS virtual hosts if possible (that is,
-      if :data:`ssl.HAS_SNI` is true).
+      if :const:`ssl.HAS_SNI` is true).
 
    .. versionchanged:: 3.4
       The *strict* parameter was removed. HTTP 0.9-style "Simple Responses" are
@@ -95,16 +95,6 @@ The module provides the following classes:
       :func:`ssl._create_unverified_context` can be passed to the *context*
       parameter.
 
-   .. deprecated:: 3.6
-       *key_file* and *cert_file* are deprecated in favor of *context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
-
-       The *check_hostname* parameter is also deprecated; the
-       :attr:`ssl.SSLContext.check_hostname` attribute of *context* should
-       be used instead.
-
    .. versionchanged:: 3.8
       This class now enables TLS 1.3
       :attr:`ssl.SSLContext.post_handshake_auth` for the default *context* or
@@ -116,8 +106,8 @@ The module provides the following classes:
       ALPN protocols with :meth:`~ssl.SSLContext.set_alpn_protocol`.
 
    .. versionchanged:: 3.12
-       The deprecated *key_file*, *cert_file* and *check_hostname* parameters
-       have been removed.
+      The deprecated *key_file*, *cert_file* and *check_hostname* parameters
+      have been removed.
 
 
 .. class:: HTTPResponse(sock, debuglevel=0, method=None, url=None)
@@ -394,6 +384,17 @@ HTTPConnection Objects
       one will be automatically generated and transmitted if not provided in
       the headers argument.
 
+
+.. method:: HTTPConnection.get_proxy_response_headers()
+
+   Returns a dictionary with the headers of the response received from
+   the proxy server to the CONNECT request.
+
+   If the CONNECT request was not sent, the method returns ``None``.
+
+   .. versionadded:: 3.12
+
+
 .. method:: HTTPConnection.connect()
 
    Connect to the server specified when the object was created.  By default,
diff --git a/Doc/library/http.cookiejar.rst b/Doc/library/http.cookiejar.rst
index 87ef156a0bed57..12a6d768437ea5 100644
--- a/Doc/library/http.cookiejar.rst
+++ b/Doc/library/http.cookiejar.rst
@@ -44,8 +44,8 @@ The module defines the following exception:
    cookies from a file.  :exc:`LoadError` is a subclass of :exc:`OSError`.
 
    .. versionchanged:: 3.3
-      LoadError was made a subclass of :exc:`OSError` instead of
-      :exc:`IOError`.
+      :exc:`LoadError` used to be a subtype of :exc:`IOError`, which is now an
+      alias of :exc:`OSError`.
 
 
 The following classes are provided:
diff --git a/Doc/library/http.server.rst b/Doc/library/http.server.rst
index ae75e6dc5fdcf3..6f79b222790094 100644
--- a/Doc/library/http.server.rst
+++ b/Doc/library/http.server.rst
@@ -217,7 +217,7 @@ provides three different variants:
       attribute holds the default values for *message* and *explain* that
       will be used if no value is provided; for unknown codes the default value
       for both is the string ``???``. The body will be empty if the method is
-      HEAD or the response code is one of the following: ``1xx``,
+      HEAD or the response code is one of the following: :samp:`1{xx}`,
       ``204 No Content``, ``205 Reset Content``, ``304 Not Modified``.
 
       .. versionchanged:: 3.4
@@ -502,11 +502,24 @@ following command runs an HTTP/1.1 conformant server::
    Note that CGI scripts will be run with UID of user nobody, for security
    reasons.  Problems with the CGI script will be translated to error 403.
 
+   .. deprecated-removed:: 3.13 3.15
+
+      :class:`CGIHTTPRequestHandler` is being removed in 3.15.  CGI has not
+      been considered a good way to do things for well over a decade. This code
+      has been unmaintained for a while now and sees very little practical use.
+      Retaining it could lead to further :ref:`security considerations
+      <http.server-security>`.
+
 :class:`CGIHTTPRequestHandler` can be enabled in the command line by passing
 the ``--cgi`` option::
 
         python -m http.server --cgi
 
+.. deprecated-removed:: 3.13 3.15
+
+   :mod:`http.server` command line ``--cgi`` support is being removed
+   because :class:`CGIHTTPRequestHandler` is being removed.
+
 .. _http.server-security:
 
 Security Considerations
diff --git a/Doc/library/idle.rst b/Doc/library/idle.rst
index 3058bcead661f3..e710d0bacf3fee 100644
--- a/Doc/library/idle.rst
+++ b/Doc/library/idle.rst
@@ -439,24 +439,24 @@ the :kbd:`Command` key on macOS.
 
 * Some useful Emacs bindings are inherited from Tcl/Tk:
 
-   * :kbd:`C-a` beginning of line
+  * :kbd:`C-a` beginning of line
 
-   * :kbd:`C-e` end of line
+  * :kbd:`C-e` end of line
 
-   * :kbd:`C-k` kill line (but doesn't put it in clipboard)
+  * :kbd:`C-k` kill line (but doesn't put it in clipboard)
 
-   * :kbd:`C-l` center window around the insertion point
+  * :kbd:`C-l` center window around the insertion point
 
-   * :kbd:`C-b` go backward one character without deleting (usually you can
-     also use the cursor key for this)
+  * :kbd:`C-b` go backward one character without deleting (usually you can
+    also use the cursor key for this)
 
-   * :kbd:`C-f` go forward one character without deleting (usually you can
-     also use the cursor key for this)
+  * :kbd:`C-f` go forward one character without deleting (usually you can
+    also use the cursor key for this)
 
-   * :kbd:`C-p` go up one line (usually you can also use the cursor key for
-     this)
+  * :kbd:`C-p` go up one line (usually you can also use the cursor key for
+    this)
 
-   * :kbd:`C-d` delete next character
+  * :kbd:`C-d` delete next character
 
 Standard keybindings (like :kbd:`C-c` to copy and :kbd:`C-v` to paste)
 may work.  Keybindings are selected in the Configure IDLE dialog.
@@ -479,7 +479,7 @@ Search and Replace
 
 Any selection becomes a search target.  However, only selections within
 a line work because searches are only performed within lines with the
-terminal newline removed.  If ``[x] Regular expresion`` is checked, the
+terminal newline removed.  If ``[x] Regular expression`` is checked, the
 target is interpreted according to the Python re module.
 
 .. _completions:
diff --git a/Doc/library/imaplib.rst b/Doc/library/imaplib.rst
index f1344ae9bb0a49..1f774e64b0eae3 100644
--- a/Doc/library/imaplib.rst
+++ b/Doc/library/imaplib.rst
@@ -106,20 +106,13 @@ There's also a subclass for secure connections:
    .. versionchanged:: 3.4
       The class now supports hostname check with
       :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
-
-   .. deprecated:: 3.6
-
-       *keyfile* and *certfile* are deprecated in favor of *ssl_context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
+      :const:`ssl.HAS_SNI`).
 
    .. versionchanged:: 3.9
       The optional *timeout* parameter was added.
 
    .. versionchanged:: 3.12
-       The deprecated *keyfile* and *certfile* parameters have been removed.
+      The deprecated *keyfile* and *certfile* parameters have been removed.
 
 The second subclass allows for connections created by a child process:
 
@@ -510,7 +503,7 @@ An :class:`IMAP4` instance has the following methods:
    .. versionchanged:: 3.4
       The method now supports hostname check with
       :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
+      :const:`ssl.HAS_SNI`).
 
 
 .. method:: IMAP4.status(mailbox, names)
diff --git a/Doc/library/imghdr.rst b/Doc/library/imghdr.rst
deleted file mode 100644
index 630fd7019f94de..00000000000000
--- a/Doc/library/imghdr.rst
+++ /dev/null
@@ -1,86 +0,0 @@
-:mod:`imghdr` --- Determine the type of an image
-================================================
-
-.. module:: imghdr
-   :synopsis: Determine the type of image contained in a file or byte stream.
-   :deprecated:
-
-**Source code:** :source:`Lib/imghdr.py`
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`imghdr` module is deprecated
-   (see :pep:`PEP 594 <594#imghdr>` for details and alternatives).
-
---------------
-
-The :mod:`imghdr` module determines the type of image contained in a file or
-byte stream.
-
-The :mod:`imghdr` module defines the following function:
-
-
-.. function:: what(file, h=None)
-
-   Test the image data contained in the file named *file* and return a
-   string describing the image type.  If *h* is provided, the *file*
-   argument is ignored and *h* is assumed to contain the byte stream to test.
-
-   .. versionchanged:: 3.6
-      Accepts a :term:`path-like object`.
-
-The following image types are recognized, as listed below with the return value
-from :func:`what`:
-
-+------------+-----------------------------------+
-| Value      | Image format                      |
-+============+===================================+
-| ``'rgb'``  | SGI ImgLib Files                  |
-+------------+-----------------------------------+
-| ``'gif'``  | GIF 87a and 89a Files             |
-+------------+-----------------------------------+
-| ``'pbm'``  | Portable Bitmap Files             |
-+------------+-----------------------------------+
-| ``'pgm'``  | Portable Graymap Files            |
-+------------+-----------------------------------+
-| ``'ppm'``  | Portable Pixmap Files             |
-+------------+-----------------------------------+
-| ``'tiff'`` | TIFF Files                        |
-+------------+-----------------------------------+
-| ``'rast'`` | Sun Raster Files                  |
-+------------+-----------------------------------+
-| ``'xbm'``  | X Bitmap Files                    |
-+------------+-----------------------------------+
-| ``'jpeg'`` | JPEG data in JFIF or Exif formats |
-+------------+-----------------------------------+
-| ``'bmp'``  | BMP files                         |
-+------------+-----------------------------------+
-| ``'png'``  | Portable Network Graphics         |
-+------------+-----------------------------------+
-| ``'webp'`` | WebP files                        |
-+------------+-----------------------------------+
-| ``'exr'``  | OpenEXR Files                     |
-+------------+-----------------------------------+
-
-.. versionadded:: 3.5
-   The *exr* and *webp* formats were added.
-
-
-You can extend the list of file types :mod:`imghdr` can recognize by appending
-to this variable:
-
-
-.. data:: tests
-
-   A list of functions performing the individual tests.  Each function takes two
-   arguments: the byte-stream and an open file-like object. When :func:`what` is
-   called with a byte-stream, the file-like object will be ``None``.
-
-   The test function should return a string describing the image type if the test
-   succeeded, or ``None`` if it failed.
-
-Example::
-
-   >>> import imghdr
-   >>> imghdr.what('bass.gif')
-   'gif'
-
diff --git a/Doc/library/importlib.metadata.rst b/Doc/library/importlib.metadata.rst
index d2cc769e2c8400..1df7d8d772a274 100644
--- a/Doc/library/importlib.metadata.rst
+++ b/Doc/library/importlib.metadata.rst
@@ -41,7 +41,7 @@ and metadata defined by the `Core metadata specifications <https://packaging.pyt
    and one top-level *import package*
    may map to multiple *distribution packages*
    if it is a namespace package.
-   You can use :ref:`package_distributions() <package-distributions>`
+   You can use :ref:`packages_distributions() <package-distributions>`
    to get a mapping between them.
 
 By default, distribution metadata can live on the file system
diff --git a/Doc/library/importlib.resources.abc.rst b/Doc/library/importlib.resources.abc.rst
index 2d0f137ffc7996..c508b6ba965cc0 100644
--- a/Doc/library/importlib.resources.abc.rst
+++ b/Doc/library/importlib.resources.abc.rst
@@ -43,8 +43,6 @@
     :const:`None`. An object compatible with this ABC should only be
     returned when the specified module is a package.
 
-    .. versionadded:: 3.7
-
     .. deprecated-removed:: 3.12 3.14
        Use :class:`importlib.resources.abc.TraversableResources` instead.
 
@@ -95,11 +93,6 @@
     For a representation of the object on the file-system, use
     :meth:`importlib.resources.as_file`.
 
-    .. versionadded:: 3.9
-
-    .. deprecated-removed:: 3.12 3.14
-       Use :class:`importlib.resources.abc.Traversable` instead.
-
     .. attribute:: name
 
        Abstract. The base name of this object without any parent references.
@@ -130,7 +123,7 @@
        suitable for reading (same as :attr:`pathlib.Path.open`).
 
        When opening as text, accepts encoding parameters such as those
-       accepted by :attr:`io.TextIOWrapper`.
+       accepted by :class:`io.TextIOWrapper`.
 
     .. method:: read_bytes()
 
@@ -145,19 +138,14 @@
 
     An abstract base class for resource readers capable of serving
     the :meth:`importlib.resources.files` interface. Subclasses
-    :class:`importlib.resources.abc.ResourceReader` and provides
-    concrete implementations of the :class:`importlib.resources.abc.ResourceReader`'s
+    :class:`ResourceReader` and provides
+    concrete implementations of the :class:`!ResourceReader`'s
     abstract methods. Therefore, any loader supplying
-    :class:`importlib.abc.TraversableResources` also supplies ResourceReader.
+    :class:`!TraversableResources` also supplies :class:`!ResourceReader`.
 
     Loaders that wish to support resource reading are expected to
     implement this interface.
 
-    .. versionadded:: 3.9
-
-    .. deprecated-removed:: 3.12 3.14
-       Use :class:`importlib.resources.abc.TraversableResources` instead.
-
     .. abstractmethod:: files()
 
        Returns a :class:`importlib.resources.abc.Traversable` object for the loaded
diff --git a/Doc/library/importlib.resources.rst b/Doc/library/importlib.resources.rst
index 755693840fecd8..a5adf0b8546dbf 100644
--- a/Doc/library/importlib.resources.rst
+++ b/Doc/library/importlib.resources.rst
@@ -50,7 +50,7 @@ for example, a package and its resources can be imported from a zip file using
 ``get_resource_reader(fullname)`` method as specified by
 :class:`importlib.resources.abc.ResourceReader`.
 
-.. data:: Anchor
+.. class:: Anchor
 
     Represents an anchor for resources, either a :class:`module object
     <types.ModuleType>` or a module name as a string. Defined as
@@ -63,7 +63,7 @@ for example, a package and its resources can be imported from a zip file using
     (think files). A Traversable may contain other containers (think
     subdirectories).
 
-    *anchor* is an optional :data:`Anchor`. If the anchor is a
+    *anchor* is an optional :class:`Anchor`. If the anchor is a
     package, resources are resolved from that package. If a module,
     resources are resolved adjacent to that module (in the same package
     or the package root). If the anchor is omitted, the caller's module
@@ -72,181 +72,28 @@ for example, a package and its resources can be imported from a zip file using
     .. versionadded:: 3.9
 
     .. versionchanged:: 3.12
-       "package" parameter was renamed to "anchor". "anchor" can now
+       *package* parameter was renamed to *anchor*. *anchor* can now
        be a non-package module and if omitted will default to the caller's
-       module. "package" is still accepted for compatibility but will raise
-       a DeprecationWarning. Consider passing the anchor positionally or
+       module. *package* is still accepted for compatibility but will raise
+       a :exc:`DeprecationWarning`. Consider passing the anchor positionally or
        using ``importlib_resources >= 5.10`` for a compatible interface
        on older Pythons.
 
 .. function:: as_file(traversable)
 
     Given a :class:`~importlib.resources.abc.Traversable` object representing
-    a file, typically from :func:`importlib.resources.files`, return
-    a context manager for use in a :keyword:`with` statement.
+    a file or directory, typically from :func:`importlib.resources.files`,
+    return a context manager for use in a :keyword:`with` statement.
     The context manager provides a :class:`pathlib.Path` object.
 
-    Exiting the context manager cleans up any temporary file created when the
-    resource was extracted from e.g. a zip file.
+    Exiting the context manager cleans up any temporary file or directory
+    created when the resource was extracted from e.g. a zip file.
 
     Use ``as_file`` when the Traversable methods
-    (``read_text``, etc) are insufficient and an actual file on
+    (``read_text``, etc) are insufficient and an actual file or directory on
     the file system is required.
 
     .. versionadded:: 3.9
 
-
-Deprecated functions
-^^^^^^^^^^^^^^^^^^^^
-
-An older, deprecated set of functions is still available, but is
-scheduled for removal in a future version of Python.
-The main drawback of these functions is that they do not support
-directories: they assume all resources are located directly within a *package*.
-
-.. data:: Package
-
-    Whenever a function accepts a ``Package`` argument, you can pass in
-    either a :class:`module object <types.ModuleType>` or a module name
-    as a string.  You can only pass module objects whose
-    ``__spec__.submodule_search_locations`` is not ``None``.
-
-    The ``Package`` type is defined as ``Union[str, ModuleType]``.
-
-   .. deprecated:: 3.12
-
-
-.. data:: Resource
-
-    For *resource* arguments of the functions below, you can pass in
-    the name of a resource as a string or
-    a :class:`path-like object <os.PathLike>`.
-
-    The ``Resource`` type is defined as ``Union[str, os.PathLike]``.
-
-
-.. function:: open_binary(package, resource)
-
-    Open for binary reading the *resource* within *package*.
-
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.  *resource* is the name of the resource to open
-    within *package*; it may not contain path separators and it may not have
-    sub-resources (i.e. it cannot be a directory).  This function returns a
-    ``typing.BinaryIO`` instance, a binary I/O stream open for reading.
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced by::
-
-          files(package).joinpath(resource).open('rb')
-
-
-.. function:: open_text(package, resource, encoding='utf-8', errors='strict')
-
-    Open for text reading the *resource* within *package*.  By default, the
-    resource is opened for reading as UTF-8.
-
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.  *resource* is the name of the resource to open
-    within *package*; it may not contain path separators and it may not have
-    sub-resources (i.e. it cannot be a directory).  *encoding* and *errors*
-    have the same meaning as with built-in :func:`open`.
-
-    This function returns a ``typing.TextIO`` instance, a text I/O stream open
-    for reading.
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced by::
-
-          files(package).joinpath(resource).open('r', encoding=encoding)
-
-
-.. function:: read_binary(package, resource)
-
-    Read and return the contents of the *resource* within *package* as
-    ``bytes``.
-
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.  *resource* is the name of the resource to open
-    within *package*; it may not contain path separators and it may not have
-    sub-resources (i.e. it cannot be a directory).  This function returns the
-    contents of the resource as :class:`bytes`.
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced by::
-
-          files(package).joinpath(resource).read_bytes()
-
-
-.. function:: read_text(package, resource, encoding='utf-8', errors='strict')
-
-    Read and return the contents of *resource* within *package* as a ``str``.
-    By default, the contents are read as strict UTF-8.
-
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.  *resource* is the name of the resource to open
-    within *package*; it may not contain path separators and it may not have
-    sub-resources (i.e. it cannot be a directory).  *encoding* and *errors*
-    have the same meaning as with built-in :func:`open`.  This function
-    returns the contents of the resource as :class:`str`.
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced by::
-
-          files(package).joinpath(resource).read_text(encoding=encoding)
-
-
-.. function:: path(package, resource)
-
-    Return the path to the *resource* as an actual file system path.  This
-    function returns a context manager for use in a :keyword:`with` statement.
-    The context manager provides a :class:`pathlib.Path` object.
-
-    Exiting the context manager cleans up any temporary file created when the
-    resource needs to be extracted from e.g. a zip file.
-
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.  *resource* is the name of the resource to open
-    within *package*; it may not contain path separators and it may not have
-    sub-resources (i.e. it cannot be a directory).
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced using :func:`as_file`::
-
-          as_file(files(package).joinpath(resource))
-
-
-.. function:: is_resource(package, name)
-
-    Return ``True`` if there is a resource named *name* in the package,
-    otherwise ``False``.
-    This function does not consider directories to be resources.
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced by::
-
-          files(package).joinpath(resource).is_file()
-
-
-.. function:: contents(package)
-
-    Return an iterable over the named items within the package.  The iterable
-    returns :class:`str` resources (e.g. files) and non-resources
-    (e.g. directories).  The iterable does not recurse into subdirectories.
-
-    *package* is either a name or a module object which conforms to the
-    ``Package`` requirements.
-
-    .. deprecated:: 3.11
-
-       Calls to this function can be replaced by::
-
-          (resource.name for resource in files(package).iterdir() if resource.is_file())
+    .. versionchanged:: 3.12
+       Added support for *traversable* representing a directory.
diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index 65aaad0df9ee66..2402bc5cd3ee2c 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -372,7 +372,7 @@ ABC hierarchy::
             The list of locations where the package's submodules will be found.
             Most of the time this is a single directory.
             The import system passes this attribute to ``__import__()`` and to finders
-            in the same way as :attr:`sys.path` but just for the package.
+            in the same way as :data:`sys.path` but just for the package.
             It is not set on non-package modules so it can be used
             as an indicator that the module is a package.
 
@@ -609,7 +609,7 @@ ABC hierarchy::
         automatically.
 
         When writing to the path fails because the path is read-only
-        (:attr:`errno.EACCES`/:exc:`PermissionError`), do not propagate the
+        (:const:`errno.EACCES`/:exc:`PermissionError`), do not propagate the
         exception.
 
         .. versionchanged:: 3.4
@@ -645,6 +645,160 @@ ABC hierarchy::
         itself does not end in ``__init__``.
 
 
+.. class:: ResourceReader
+
+    *Superseded by TraversableResources*
+
+    An :term:`abstract base class` to provide the ability to read
+    *resources*.
+
+    From the perspective of this ABC, a *resource* is a binary
+    artifact that is shipped within a package. Typically this is
+    something like a data file that lives next to the ``__init__.py``
+    file of the package. The purpose of this class is to help abstract
+    out the accessing of such data files so that it does not matter if
+    the package and its data file(s) are stored in a e.g. zip file
+    versus on the file system.
+
+    For any of methods of this class, a *resource* argument is
+    expected to be a :term:`path-like object` which represents
+    conceptually just a file name. This means that no subdirectory
+    paths should be included in the *resource* argument. This is
+    because the location of the package the reader is for, acts as the
+    "directory". Hence the metaphor for directories and file
+    names is packages and resources, respectively. This is also why
+    instances of this class are expected to directly correlate to
+    a specific package (instead of potentially representing multiple
+    packages or a module).
+
+    Loaders that wish to support resource reading are expected to
+    provide a method called ``get_resource_reader(fullname)`` which
+    returns an object implementing this ABC's interface. If the module
+    specified by fullname is not a package, this method should return
+    :const:`None`. An object compatible with this ABC should only be
+    returned when the specified module is a package.
+
+    .. versionadded:: 3.7
+
+    .. deprecated-removed:: 3.12 3.14
+       Use :class:`importlib.resources.abc.TraversableResources` instead.
+
+    .. abstractmethod:: open_resource(resource)
+
+        Returns an opened, :term:`file-like object` for binary reading
+        of the *resource*.
+
+        If the resource cannot be found, :exc:`FileNotFoundError` is
+        raised.
+
+    .. abstractmethod:: resource_path(resource)
+
+        Returns the file system path to the *resource*.
+
+        If the resource does not concretely exist on the file system,
+        raise :exc:`FileNotFoundError`.
+
+    .. abstractmethod:: is_resource(name)
+
+        Returns ``True`` if the named *name* is considered a resource.
+        :exc:`FileNotFoundError` is raised if *name* does not exist.
+
+    .. abstractmethod:: contents()
+
+        Returns an :term:`iterable` of strings over the contents of
+        the package. Do note that it is not required that all names
+        returned by the iterator be actual resources, e.g. it is
+        acceptable to return names for which :meth:`is_resource` would
+        be false.
+
+        Allowing non-resource names to be returned is to allow for
+        situations where how a package and its resources are stored
+        are known a priori and the non-resource names would be useful.
+        For instance, returning subdirectory names is allowed so that
+        when it is known that the package and resources are stored on
+        the file system then those subdirectory names can be used
+        directly.
+
+        The abstract method returns an iterable of no items.
+
+
+.. class:: Traversable
+
+    An object with a subset of :class:`pathlib.Path` methods suitable for
+    traversing directories and opening files.
+
+    For a representation of the object on the file-system, use
+    :meth:`importlib.resources.as_file`.
+
+    .. versionadded:: 3.9
+
+    .. deprecated-removed:: 3.12 3.14
+       Use :class:`importlib.resources.abc.Traversable` instead.
+
+    .. attribute:: name
+
+       Abstract. The base name of this object without any parent references.
+
+    .. abstractmethod:: iterdir()
+
+       Yield ``Traversable`` objects in ``self``.
+
+    .. abstractmethod:: is_dir()
+
+       Return ``True`` if ``self`` is a directory.
+
+    .. abstractmethod:: is_file()
+
+       Return ``True`` if ``self`` is a file.
+
+    .. abstractmethod:: joinpath(child)
+
+       Return Traversable child in ``self``.
+
+    .. abstractmethod:: __truediv__(child)
+
+       Return ``Traversable`` child in ``self``.
+
+    .. abstractmethod:: open(mode='r', *args, **kwargs)
+
+       *mode* may be 'r' or 'rb' to open as text or binary. Return a handle
+       suitable for reading (same as :attr:`pathlib.Path.open`).
+
+       When opening as text, accepts encoding parameters such as those
+       accepted by :attr:`io.TextIOWrapper`.
+
+    .. method:: read_bytes()
+
+       Read contents of ``self`` as bytes.
+
+    .. method:: read_text(encoding=None)
+
+       Read contents of ``self`` as text.
+
+
+.. class:: TraversableResources
+
+    An abstract base class for resource readers capable of serving
+    the :meth:`importlib.resources.files` interface. Subclasses
+    :class:`importlib.resources.abc.ResourceReader` and provides
+    concrete implementations of the :class:`importlib.resources.abc.ResourceReader`'s
+    abstract methods. Therefore, any loader supplying
+    :class:`importlib.abc.TraversableResources` also supplies ResourceReader.
+
+    Loaders that wish to support resource reading are expected to
+    implement this interface.
+
+    .. versionadded:: 3.9
+
+    .. deprecated-removed:: 3.12 3.14
+       Use :class:`importlib.resources.abc.TraversableResources` instead.
+
+    .. abstractmethod:: files()
+
+       Returns a :class:`importlib.resources.abc.Traversable` object for the loaded
+       package.
+
+
 
 :mod:`importlib.machinery` -- Importers and path hooks
 ------------------------------------------------------
@@ -843,7 +997,7 @@ find and load modules.
 
    .. classmethod:: path_hook(*loader_details)
 
-      A class method which returns a closure for use on :attr:`sys.path_hooks`.
+      A class method which returns a closure for use on :data:`sys.path_hooks`.
       An instance of :class:`FileFinder` is returned by the closure using the
       path argument given to the closure directly and *loader_details*
       indirectly.
@@ -941,8 +1095,15 @@ find and load modules.
    The *fullname* argument specifies the name of the module the loader is to
    support. The *path* argument is the path to the extension module's file.
 
+   Note that, by default, importing an extension module will fail
+   in subinterpreters if it doesn't implement multi-phase init
+   (see :pep:`489`), even if it would otherwise import successfully.
+
    .. versionadded:: 3.3
 
+   .. versionchanged:: 3.12
+      Multi-phase init is now required for use in subinterpreters.
+
    .. attribute:: name
 
       Name of the module the loader supports.
@@ -984,7 +1145,7 @@ find and load modules.
       .. versionadded:: 3.4
 
 
-.. class:: NamespaceLoader(name, path, path_finder):
+.. class:: NamespaceLoader(name, path, path_finder)
 
    A concrete implementation of :class:`importlib.abc.InspectLoader` for
    namespace packages.  This is an alias for a private class and is only made
@@ -1184,10 +1345,10 @@ an :term:`importer`.
 .. function:: find_spec(name, package=None)
 
    Find the :term:`spec <module spec>` for a module, optionally relative to
-   the specified **package** name. If the module is in :attr:`sys.modules`,
+   the specified **package** name. If the module is in :data:`sys.modules`,
    then ``sys.modules[name].__spec__`` is returned (unless the spec would be
    ``None`` or is not set, in which case :exc:`ValueError` is raised).
-   Otherwise a search using :attr:`sys.meta_path` is done. ``None`` is
+   Otherwise a search using :data:`sys.meta_path` is done. ``None`` is
    returned if no spec is found.
 
    If **name** is for a submodule (contains a dot), the parent module is
@@ -1248,6 +1409,30 @@ an :term:`importer`.
 
    .. versionadded:: 3.7
 
+.. function:: _incompatible_extension_module_restrictions(*, disable_check)
+
+   A context manager that can temporarily skip the compatibility check
+   for extension modules.  By default the check is enabled and will fail
+   when a single-phase init module is imported in a subinterpreter.
+   It will also fail for a multi-phase init module that doesn't
+   explicitly support a per-interpreter GIL, when imported
+   in an interpreter with its own GIL.
+
+   Note that this function is meant to accommodate an unusual case;
+   one which is likely to eventually go away.  There's is a pretty good
+   chance this is not what you were looking for.
+
+   You can get the same effect as this function by implementing the
+   basic interface of multi-phase init (:pep:`489`) and lying about
+   support for multiple interpreters (or per-interpreter GIL).
+
+   .. warning::
+      Using this function to disable the check can lead to
+      unexpected behavior and even crashes.  It should only be used during
+      extension module development.
+
+   .. versionadded:: 3.12
+
 .. class:: LazyLoader(loader)
 
    A class which postpones the execution of the loader of a module until the
@@ -1259,7 +1444,7 @@ an :term:`importer`.
    :meth:`~importlib.abc.Loader.create_module` method must return ``None`` or a
    type for which its ``__class__`` attribute can be mutated along with not
    using :term:`slots <__slots__>`. Finally, modules which substitute the object
-   placed into :attr:`sys.modules` will not work as there is no way to properly
+   placed into :data:`sys.modules` will not work as there is no way to properly
    replace the module references throughout the interpreter safely;
    :exc:`ValueError` is raised if such a substitution is detected.
 
@@ -1383,9 +1568,9 @@ For deep customizations of import, you typically want to implement an
 :term:`importer`. This means managing both the :term:`finder` and :term:`loader`
 side of things. For finders there are two flavours to choose from depending on
 your needs: a :term:`meta path finder` or a :term:`path entry finder`. The
-former is what you would put on :attr:`sys.meta_path` while the latter is what
-you create using a :term:`path entry hook` on :attr:`sys.path_hooks` which works
-with :attr:`sys.path` entries to potentially create a finder. This example will
+former is what you would put on :data:`sys.meta_path` while the latter is what
+you create using a :term:`path entry hook` on :data:`sys.path_hooks` which works
+with :data:`sys.path` entries to potentially create a finder. This example will
 show you how to register your own importers so that import will use them (for
 creating an importer for yourself, read the documentation for the appropriate
 classes defined within this package)::
diff --git a/Doc/library/index.rst b/Doc/library/index.rst
index d064b680f9aaa4..0b348ae6f5c8c0 100644
--- a/Doc/library/index.rst
+++ b/Doc/library/index.rst
@@ -73,5 +73,6 @@ the `Python Package Index <https://pypi.org>`_.
    language.rst
    windows.rst
    unix.rst
+   cmdline.rst
    superseded.rst
    security_warnings.rst
diff --git a/Doc/library/inspect.rst b/Doc/library/inspect.rst
index 7884308a333020..8381e508139fbd 100644
--- a/Doc/library/inspect.rst
+++ b/Doc/library/inspect.rst
@@ -1,6 +1,11 @@
 :mod:`inspect` --- Inspect live objects
 =======================================
 
+.. testsetup:: *
+
+   import inspect
+   from inspect import *
+
 .. module:: inspect
    :synopsis: Extract information and source code from live objects.
 
@@ -268,7 +273,7 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
 
       :func:`getmembers` will only return class attributes defined in the
       metaclass when the argument is a class and those attributes have been
-      listed in the metaclass' custom :meth:`__dir__`.
+      listed in the metaclass' custom :meth:`~object.__dir__`.
 
 
 .. function:: getmembers_static(object[, predicate])
@@ -387,7 +392,11 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
    Return ``True`` if the object can be used in :keyword:`await` expression.
 
    Can also be used to distinguish generator-based coroutines from regular
-   generators::
+   generators:
+
+   .. testcode::
+
+      import types
 
       def gen():
           yield
@@ -404,13 +413,15 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
 .. function:: isasyncgenfunction(object)
 
    Return ``True`` if the object is an :term:`asynchronous generator` function,
-   for example::
+   for example:
 
-    >>> async def agen():
-    ...     yield 1
-    ...
-    >>> inspect.isasyncgenfunction(agen)
-    True
+   .. doctest::
+
+      >>> async def agen():
+      ...     yield 1
+      ...
+      >>> inspect.isasyncgenfunction(agen)
+      True
 
    .. versionadded:: 3.6
 
@@ -476,12 +487,13 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
    has a :meth:`~object.__get__` method but not a :meth:`~object.__set__`
    method, but beyond that the set of attributes varies.  A
    :attr:`~definition.__name__` attribute is usually
-   sensible, and :attr:`__doc__` often is.
+   sensible, and :attr:`!__doc__` often is.
 
    Methods implemented via descriptors that also pass one of the other tests
    return ``False`` from the :func:`ismethoddescriptor` test, simply because the
    other tests promise more -- you can, e.g., count on having the
-   :attr:`__func__` attribute (etc) when an object passes :func:`ismethod`.
+   :attr:`~method.__func__` attribute (etc) when an object passes
+   :func:`ismethod`.
 
 
 .. function:: isdatadescriptor(object)
@@ -492,7 +504,7 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
    Examples are properties (defined in Python), getsets, and members.  The
    latter two are defined in C and there are more specific tests available for
    those types, which is robust across Python implementations.  Typically, data
-   descriptors will also have :attr:`~definition.__name__` and :attr:`__doc__` attributes
+   descriptors will also have :attr:`~definition.__name__` and :attr:`!__doc__` attributes
    (properties, getsets, and members have both of these attributes), but this is
    not guaranteed.
 
@@ -614,13 +626,16 @@ Introspecting callables with the Signature object
 
 .. versionadded:: 3.3
 
-The Signature object represents the call signature of a callable object and its
-return annotation.  To retrieve a Signature object, use the :func:`signature`
+The :class:`Signature` object represents the call signature of a callable object
+and its return annotation. To retrieve a :class:`!Signature` object,
+use the :func:`!signature`
 function.
 
 .. function:: signature(callable, *, follow_wrapped=True, globals=None, locals=None, eval_str=False)
 
-   Return a :class:`Signature` object for the given ``callable``::
+   Return a :class:`Signature` object for the given *callable*:
+
+   .. doctest::
 
       >>> from inspect import signature
       >>> def foo(a, *, b:int, **kwargs):
@@ -629,10 +644,10 @@ function.
       >>> sig = signature(foo)
 
       >>> str(sig)
-      '(a, *, b:int, **kwargs)'
+      '(a, *, b: int, **kwargs)'
 
       >>> str(sig.parameters['b'])
-      'b:int'
+      'b: int'
 
       >>> sig.parameters['b'].annotation
       <class 'int'>
@@ -640,32 +655,36 @@ function.
    Accepts a wide range of Python callables, from plain functions and classes to
    :func:`functools.partial` objects.
 
+   If the passed object has a ``__signature__`` attribute, this function
+   returns it without further computations.
+
    For objects defined in modules using stringized annotations
    (``from __future__ import annotations``), :func:`signature` will
    attempt to automatically un-stringize the annotations using
-   :func:`inspect.get_annotations()`.  The
-   ``global``, ``locals``, and ``eval_str`` parameters are passed
-   into :func:`inspect.get_annotations()` when resolving the
-   annotations; see the documentation for :func:`inspect.get_annotations()`
+   :func:`get_annotations`.  The
+   *globals*, *locals*, and *eval_str* parameters are passed
+   into :func:`get_annotations` when resolving the
+   annotations; see the documentation for :func:`get_annotations`
    for instructions on how to use these parameters.
 
    Raises :exc:`ValueError` if no signature can be provided, and
    :exc:`TypeError` if that type of object is not supported.  Also,
-   if the annotations are stringized, and ``eval_str`` is not false,
-   the ``eval()`` call(s) to un-stringize the annotations could
-   potentially raise any kind of exception.
+   if the annotations are stringized, and *eval_str* is not false,
+   the ``eval()`` call(s) to un-stringize the annotations in :func:`get_annotations`
+   could potentially raise any kind of exception.
 
    A slash(/) in the signature of a function denotes that the parameters prior
    to it are positional-only. For more info, see
    :ref:`the FAQ entry on positional-only parameters <faq-positional-only-arguments>`.
 
-   .. versionadded:: 3.5
-      ``follow_wrapped`` parameter. Pass ``False`` to get a signature of
-      ``callable`` specifically (``callable.__wrapped__`` will not be used to
+   .. versionchanged:: 3.5
+      The *follow_wrapped* parameter was added.
+      Pass ``False`` to get a signature of
+      *callable* specifically (``callable.__wrapped__`` will not be used to
       unwrap decorated callables.)
 
-   .. versionadded:: 3.10
-      ``globals``, ``locals``, and ``eval_str`` parameters.
+   .. versionchanged:: 3.10
+      The *globals*, *locals*, and *eval_str* parameters were added.
 
    .. note::
 
@@ -676,7 +695,8 @@ function.
 
 .. class:: Signature(parameters=None, *, return_annotation=Signature.empty)
 
-   A Signature object represents the call signature of a function and its return
+   A :class:`!Signature` object represents the call signature of a function
+   and its return
    annotation.  For each parameter accepted by the function it stores a
    :class:`Parameter` object in its :attr:`parameters` collection.
 
@@ -686,14 +706,14 @@ function.
    positional-only first, then positional-or-keyword, and that parameters with
    defaults follow parameters without defaults.
 
-   The optional *return_annotation* argument, can be an arbitrary Python object,
-   is the "return" annotation of the callable.
+   The optional *return_annotation* argument can be an arbitrary Python object.
+   It represents the "return" annotation of the callable.
 
-   Signature objects are *immutable*.  Use :meth:`Signature.replace` to make a
-   modified copy.
+   :class:`!Signature` objects are *immutable*.  Use :meth:`Signature.replace` or
+   :func:`copy.replace` to make a modified copy.
 
    .. versionchanged:: 3.5
-      Signature objects are picklable and :term:`hashable`.
+      :class:`!Signature` objects are now picklable and :term:`hashable`.
 
    .. attribute:: Signature.empty
 
@@ -730,13 +750,15 @@ function.
 
    .. method:: Signature.replace(*[, parameters][, return_annotation])
 
-      Create a new Signature instance based on the instance replace was invoked
-      on.  It is possible to pass different ``parameters`` and/or
-      ``return_annotation`` to override the corresponding properties of the base
-      signature.  To remove return_annotation from the copied Signature, pass in
+      Create a new :class:`Signature` instance based on the instance
+      :meth:`replace` was invoked on.
+      It is possible to pass different *parameters* and/or
+      *return_annotation* to override the corresponding properties of the base
+      signature.  To remove ``return_annotation`` from the copied
+      :class:`!Signature`, pass in
       :attr:`Signature.empty`.
 
-      ::
+      .. doctest::
 
          >>> def test(a, b):
          ...     pass
@@ -746,33 +768,50 @@ function.
          >>> str(new_sig)
          "(a, b) -> 'new return anno'"
 
-   .. classmethod:: Signature.from_callable(obj, *, follow_wrapped=True, globalns=None, localns=None)
+      :class:`Signature` objects are also supported by the generic function
+      :func:`copy.replace`.
+
+   .. method:: format(*, max_width=None)
+
+      Create a string representation of the :class:`Signature` object.
+
+      If *max_width* is passed, the method will attempt to fit
+      the signature into lines of at most *max_width* characters.
+      If the signature is longer than *max_width*,
+      all parameters will be on separate lines.
+
+      .. versionadded:: 3.13
+
+   .. classmethod:: Signature.from_callable(obj, *, follow_wrapped=True, globals=None, locals=None, eval_str=False)
 
        Return a :class:`Signature` (or its subclass) object for a given callable
-       ``obj``.  Pass ``follow_wrapped=False`` to get a signature of ``obj``
-       without unwrapping its ``__wrapped__`` chain. ``globalns`` and
-       ``localns`` will be used as the namespaces when resolving annotations.
+       *obj*.
+
+       This method simplifies subclassing of :class:`Signature`:
 
-       This method simplifies subclassing of :class:`Signature`::
+       .. testcode::
 
-         class MySignature(Signature):
-             pass
-         sig = MySignature.from_callable(min)
-         assert isinstance(sig, MySignature)
+          class MySignature(Signature):
+              pass
+          sig = MySignature.from_callable(sum)
+          assert isinstance(sig, MySignature)
+
+       Its behavior is otherwise identical to that of :func:`signature`.
 
        .. versionadded:: 3.5
 
-       .. versionadded:: 3.10
-          ``globalns`` and ``localns`` parameters.
+       .. versionchanged:: 3.10
+         The *globals*, *locals*, and *eval_str* parameters were added.
 
 
 .. class:: Parameter(name, kind, *, default=Parameter.empty, annotation=Parameter.empty)
 
-   Parameter objects are *immutable*.  Instead of modifying a Parameter object,
-   you can use :meth:`Parameter.replace` to create a modified copy.
+   :class:`!Parameter` objects are *immutable*.
+   Instead of modifying a :class:`!Parameter` object,
+   you can use :meth:`Parameter.replace` or :func:`copy.replace` to create a modified copy.
 
    .. versionchanged:: 3.5
-      Parameter objects are picklable and :term:`hashable`.
+      Parameter objects are now picklable and :term:`hashable`.
 
    .. attribute:: Parameter.empty
 
@@ -791,7 +830,7 @@ function.
          expressions.
 
          .. versionchanged:: 3.6
-            These parameter names are exposed by this module as names like
+            These parameter names are now exposed by this module as names like
             ``implicit0``.
 
    .. attribute:: Parameter.default
@@ -841,7 +880,9 @@ function.
       |                        | definition.                                  |
       +------------------------+----------------------------------------------+
 
-      Example: print all keyword-only arguments without default values::
+      Example: print all keyword-only arguments without default values:
+
+      .. doctest::
 
          >>> def foo(a, b, *, c, d=10):
          ...     pass
@@ -855,11 +896,13 @@ function.
 
    .. attribute:: Parameter.kind.description
 
-      Describes a enum value of Parameter.kind.
+      Describes a enum value of :attr:`Parameter.kind`.
 
       .. versionadded:: 3.8
 
-      Example: print all descriptions of arguments::
+      Example: print all descriptions of arguments:
+
+      .. doctest::
 
          >>> def foo(a, b, *, c, d=10):
          ...     pass
@@ -874,12 +917,12 @@ function.
 
    .. method:: Parameter.replace(*[, name][, kind][, default][, annotation])
 
-      Create a new Parameter instance based on the instance replaced was invoked
-      on.  To override a :class:`Parameter` attribute, pass the corresponding
+      Create a new :class:`Parameter` instance based on the instance replaced was invoked
+      on.  To override a :class:`!Parameter` attribute, pass the corresponding
       argument.  To remove a default value or/and an annotation from a
-      Parameter, pass :attr:`Parameter.empty`.
+      :class:`!Parameter`, pass :attr:`Parameter.empty`.
 
-      ::
+      .. doctest::
 
          >>> from inspect import Parameter
          >>> param = Parameter('foo', Parameter.KEYWORD_ONLY, default=42)
@@ -890,10 +933,13 @@ function.
          'foo=42'
 
          >>> str(param.replace(default=Parameter.empty, annotation='spam'))
-         "foo:'spam'"
+         "foo: 'spam'"
+
+      :class:`Parameter` objects are also supported by the generic function
+      :func:`copy.replace`.
 
    .. versionchanged:: 3.4
-      In Python 3.3 Parameter objects were allowed to have ``name`` set
+      In Python 3.3 :class:`Parameter` objects were allowed to have ``name`` set
       to ``None`` if their ``kind`` was set to ``POSITIONAL_ONLY``.
       This is no longer permitted.
 
@@ -946,18 +992,20 @@ function.
       For variable-keyword arguments (``**kwargs``) the default is an
       empty dict.
 
-      ::
+      .. doctest::
 
-        >>> def foo(a, b='ham', *args): pass
-        >>> ba = inspect.signature(foo).bind('spam')
-        >>> ba.apply_defaults()
-        >>> ba.arguments
-        {'a': 'spam', 'b': 'ham', 'args': ()}
+         >>> def foo(a, b='ham', *args): pass
+         >>> ba = inspect.signature(foo).bind('spam')
+         >>> ba.apply_defaults()
+         >>> ba.arguments
+         {'a': 'spam', 'b': 'ham', 'args': ()}
 
       .. versionadded:: 3.5
 
    The :attr:`args` and :attr:`kwargs` properties can be used to invoke
-   functions::
+   functions:
+
+   .. testcode::
 
       def test(a, *, b):
           ...
@@ -1076,20 +1124,22 @@ Classes and functions
    ``**`` arguments, if any) to their values from *args* and *kwds*. In case of
    invoking *func* incorrectly, i.e. whenever ``func(*args, **kwds)`` would raise
    an exception because of incompatible signature, an exception of the same type
-   and the same or similar message is raised. For example::
-
-    >>> from inspect import getcallargs
-    >>> def f(a, b=1, *pos, **named):
-    ...     pass
-    ...
-    >>> getcallargs(f, 1, 2, 3) == {'a': 1, 'named': {}, 'b': 2, 'pos': (3,)}
-    True
-    >>> getcallargs(f, a=2, x=4) == {'a': 2, 'named': {'x': 4}, 'b': 1, 'pos': ()}
-    True
-    >>> getcallargs(f)
-    Traceback (most recent call last):
-    ...
-    TypeError: f() missing 1 required positional argument: 'a'
+   and the same or similar message is raised. For example:
+
+   .. doctest::
+
+      >>> from inspect import getcallargs
+      >>> def f(a, b=1, *pos, **named):
+      ...     pass
+      ...
+      >>> getcallargs(f, 1, 2, 3) == {'a': 1, 'named': {}, 'b': 2, 'pos': (3,)}
+      True
+      >>> getcallargs(f, a=2, x=4) == {'a': 2, 'named': {'x': 4}, 'b': 1, 'pos': ()}
+      True
+      >>> getcallargs(f)
+      Traceback (most recent call last):
+      ...
+      TypeError: f() missing 1 required positional argument: 'a'
 
    .. versionadded:: 3.2
 
@@ -1391,7 +1441,8 @@ Fetching attributes statically
 
 Both :func:`getattr` and :func:`hasattr` can trigger code execution when
 fetching or checking for the existence of attributes. Descriptors, like
-properties, will be invoked and :meth:`__getattr__` and :meth:`__getattribute__`
+properties, will be invoked and :meth:`~object.__getattr__` and
+:meth:`~object.__getattribute__`
 may be called.
 
 For cases where you want passive introspection, like documentation tools, this
@@ -1401,7 +1452,8 @@ but avoids executing code when it fetches attributes.
 .. function:: getattr_static(obj, attr, default=None)
 
    Retrieve attributes without triggering dynamic lookup via the
-   descriptor protocol, :meth:`__getattr__` or :meth:`__getattribute__`.
+   descriptor protocol, :meth:`~object.__getattr__`
+   or :meth:`~object.__getattribute__`.
 
    Note: this function may not be able to retrieve all attributes
    that getattr can fetch (like dynamically created attributes)
@@ -1458,10 +1510,11 @@ generator to be determined easily.
    Get current state of a generator-iterator.
 
    Possible states are:
-    * GEN_CREATED: Waiting to start execution.
-    * GEN_RUNNING: Currently being executed by the interpreter.
-    * GEN_SUSPENDED: Currently suspended at a yield expression.
-    * GEN_CLOSED: Execution has completed.
+
+   * GEN_CREATED: Waiting to start execution.
+   * GEN_RUNNING: Currently being executed by the interpreter.
+   * GEN_SUSPENDED: Currently suspended at a yield expression.
+   * GEN_CLOSED: Execution has completed.
 
    .. versionadded:: 3.2
 
@@ -1473,10 +1526,11 @@ generator to be determined easily.
    ``cr_frame`` attributes.
 
    Possible states are:
-    * CORO_CREATED: Waiting to start execution.
-    * CORO_RUNNING: Currently being executed by the interpreter.
-    * CORO_SUSPENDED: Currently suspended at an await expression.
-    * CORO_CLOSED: Execution has completed.
+
+   * CORO_CREATED: Waiting to start execution.
+   * CORO_RUNNING: Currently being executed by the interpreter.
+   * CORO_SUSPENDED: Currently suspended at an await expression.
+   * CORO_CLOSED: Execution has completed.
 
    .. versionadded:: 3.5
 
@@ -1489,10 +1543,11 @@ generator to be determined easily.
    ``ag_running`` and ``ag_frame`` attributes.
 
    Possible states are:
-    * AGEN_CREATED: Waiting to start execution.
-    * AGEN_RUNNING: Currently being executed by the interpreter.
-    * AGEN_SUSPENDED: Currently suspended at a yield expression.
-    * AGEN_CLOSED: Execution has completed.
+
+   * AGEN_CREATED: Waiting to start execution.
+   * AGEN_RUNNING: Currently being executed by the interpreter.
+   * AGEN_SUSPENDED: Currently suspended at a yield expression.
+   * AGEN_CLOSED: Execution has completed.
 
    .. versionadded:: 3.12
 
@@ -1541,8 +1596,8 @@ updated as expected:
 Code Objects Bit Flags
 ----------------------
 
-Python code objects have a ``co_flags`` attribute, which is a bitmap of
-the following flags:
+Python code objects have a :attr:`~codeobject.co_flags` attribute,
+which is a bitmap of the following flags:
 
 .. data:: CO_OPTIMIZED
 
@@ -1550,8 +1605,8 @@ the following flags:
 
 .. data:: CO_NEWLOCALS
 
-   If set, a new dict will be created for the frame's ``f_locals`` when
-   the code object is executed.
+   If set, a new dict will be created for the frame's :attr:`~frame.f_locals`
+   when the code object is executed.
 
 .. data:: CO_VARARGS
 
@@ -1650,6 +1705,6 @@ By default, accepts the name of a module and prints the source of that
 module. A class or function within the module can be printed instead by
 appended a colon and the qualified name of the target object.
 
-.. cmdoption:: --details
+.. option:: --details
 
    Print information about the specified object rather than the source code
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index c9249da1c3c3d2..6736aa9ee2b0ef 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -38,9 +38,9 @@ location), or only sequential access (for example in the case of a socket or
 pipe).
 
 All streams are careful about the type of data you give to them.  For example
-giving a :class:`str` object to the ``write()`` method of a binary stream
+giving a :class:`str` object to the :meth:`!write` method of a binary stream
 will raise a :exc:`TypeError`.  So will giving a :class:`bytes` object to the
-``write()`` method of a text stream.
+:meth:`!write` method of a text stream.
 
 .. versionchanged:: 3.3
    Operations that used to raise :exc:`IOError` now raise :exc:`OSError`, since
@@ -146,7 +146,7 @@ Opt-in EncodingWarning
    See :pep:`597` for more details.
 
 To find where the default locale encoding is used, you can enable
-the ``-X warn_default_encoding`` command line option or set the
+the :option:`-X warn_default_encoding <-X>` command line option or set the
 :envvar:`PYTHONWARNDEFAULTENCODING` environment variable, which will
 emit an :exc:`EncodingWarning` when the default encoding is used.
 
@@ -175,7 +175,7 @@ High-level Module Interface
    .. audit-event:: open path,mode,flags io.open
 
       This function raises an :ref:`auditing event <auditing>` ``open`` with
-      arguments ``path``, ``mode`` and ``flags``. The ``mode`` and ``flags``
+      arguments *path*, *mode* and *flags*. The *mode* and *flags*
       arguments may have been modified or inferred from the original call.
 
 
@@ -184,10 +184,10 @@ High-level Module Interface
    Opens the provided file with mode ``'rb'``. This function should be used
    when the intent is to treat the contents as executable code.
 
-   ``path`` should be a :class:`str` and an absolute path.
+   *path* should be a :class:`str` and an absolute path.
 
    The behavior of this function may be overridden by an earlier call to the
-   :c:func:`PyFile_SetOpenCodeHook`. However, assuming that ``path`` is a
+   :c:func:`PyFile_SetOpenCodeHook`. However, assuming that *path* is a
    :class:`str` and an absolute path, ``open_code(path)`` should always behave
    the same as ``open(path, 'rb')``. Overriding the behavior is intended for
    additional validation or preprocessing of the file.
@@ -253,12 +253,12 @@ The implementation of I/O streams is organized as a hierarchy of classes.  First
 specify the various categories of streams, then concrete classes providing the
 standard stream implementations.
 
-   .. note::
+.. note::
 
-      The abstract base classes also provide default implementations of some
-      methods in order to help implementation of concrete stream classes.  For
-      example, :class:`BufferedIOBase` provides unoptimized implementations of
-      :meth:`~IOBase.readinto` and :meth:`~IOBase.readline`.
+   The abstract base classes also provide default implementations of some
+   methods in order to help implementation of concrete stream classes.  For
+   example, :class:`BufferedIOBase` provides unoptimized implementations of
+   :meth:`!readinto` and :meth:`!readline`.
 
 At the top of the I/O hierarchy is the abstract base class :class:`IOBase`.  It
 defines the basic interface to a stream.  Note, however, that there is no
@@ -320,8 +320,8 @@ I/O Base Classes
    implementations represent a file that cannot be read, written or
    seeked.
 
-   Even though :class:`IOBase` does not declare :meth:`read`
-   or :meth:`write` because their signatures will vary, implementations and
+   Even though :class:`IOBase` does not declare :meth:`!read`
+   or :meth:`!write` because their signatures will vary, implementations and
    clients should consider those methods part of the interface.  Also,
    implementations may raise a :exc:`ValueError` (or :exc:`UnsupportedOperation`)
    when operations they do not support are called.
@@ -379,8 +379,8 @@ I/O Base Classes
 
    .. method:: readable()
 
-      Return ``True`` if the stream can be read from.  If ``False``, :meth:`read`
-      will raise :exc:`OSError`.
+      Return ``True`` if the stream can be read from.
+      If ``False``, :meth:`!read` will raise :exc:`OSError`.
 
    .. method:: readline(size=-1, /)
 
@@ -401,29 +401,28 @@ I/O Base Classes
       hint.
 
       Note that it's already possible to iterate on file objects using ``for
-      line in file: ...`` without calling ``file.readlines()``.
+      line in file: ...`` without calling :meth:`!file.readlines`.
 
-   .. method:: seek(offset, whence=SEEK_SET, /)
+   .. method:: seek(offset, whence=os.SEEK_SET, /)
 
-      Change the stream position to the given byte *offset*.  *offset* is
-      interpreted relative to the position indicated by *whence*.  The default
-      value for *whence* is :data:`SEEK_SET`.  Values for *whence* are:
+      Change the stream position to the given byte *offset*,
+      interpreted relative to the position indicated by *whence*,
+      and return the new absolute position.
+      Values for *whence* are:
 
-      * :data:`SEEK_SET` or ``0`` -- start of the stream (the default);
+      * :data:`os.SEEK_SET` or ``0`` -- start of the stream (the default);
         *offset* should be zero or positive
-      * :data:`SEEK_CUR` or ``1`` -- current stream position; *offset* may
-        be negative
-      * :data:`SEEK_END` or ``2`` -- end of the stream; *offset* is usually
-        negative
-
-      Return the new absolute position.
+      * :data:`os.SEEK_CUR` or ``1`` -- current stream position;
+        *offset* may be negative
+      * :data:`os.SEEK_END` or ``2`` -- end of the stream;
+        *offset* is usually negative
 
       .. versionadded:: 3.1
-         The ``SEEK_*`` constants.
+         The :data:`!SEEK_*` constants.
 
       .. versionadded:: 3.3
          Some operating systems could support additional values, like
-         :data:`os.SEEK_HOLE` or :data:`os.SEEK_DATA`. The valid values
+         :const:`os.SEEK_HOLE` or :const:`os.SEEK_DATA`. The valid values
          for a file could depend on it being open in text or binary mode.
 
    .. method:: seekable()
@@ -450,7 +449,7 @@ I/O Base Classes
    .. method:: writable()
 
       Return ``True`` if the stream supports writing.  If ``False``,
-      :meth:`write` and :meth:`truncate` will raise :exc:`OSError`.
+      :meth:`!write` and :meth:`truncate` will raise :exc:`OSError`.
 
    .. method:: writelines(lines, /)
 
@@ -654,8 +653,9 @@ Raw File I/O
    implies writing, so this mode behaves in a similar way to ``'w'``. Add a
    ``'+'`` to the mode to allow simultaneous reading and writing.
 
-   The :meth:`read` (when called with a positive argument), :meth:`readinto`
-   and :meth:`write` methods on this class will only make one system call.
+   The :meth:`~RawIOBase.read` (when called with a positive argument),
+   :meth:`~RawIOBase.readinto` and :meth:`~RawIOBase.write` methods on this
+   class will only make one system call.
 
    A custom opener can be used by passing a callable as *opener*. The underlying
    file descriptor for the file object is then obtained by calling *opener* with
@@ -791,8 +791,8 @@ than raw I/O does.
    object under various conditions, including:
 
    * when the buffer gets too small for all pending data;
-   * when :meth:`flush()` is called;
-   * when a :meth:`seek()` is requested (for :class:`BufferedRandom` objects);
+   * when :meth:`flush` is called;
+   * when a :meth:`~IOBase.seek` is requested (for :class:`BufferedRandom` objects);
    * when the :class:`BufferedWriter` object is closed or destroyed.
 
    The constructor creates a :class:`BufferedWriter` for the given writeable
@@ -826,8 +826,8 @@ than raw I/O does.
    :data:`DEFAULT_BUFFER_SIZE`.
 
    :class:`BufferedRandom` is capable of anything :class:`BufferedReader` or
-   :class:`BufferedWriter` can do.  In addition, :meth:`seek` and :meth:`tell`
-   are guaranteed to be implemented.
+   :class:`BufferedWriter` can do.  In addition, :meth:`~IOBase.seek` and
+   :meth:`~IOBase.tell` are guaranteed to be implemented.
 
 
 .. class:: BufferedRWPair(reader, writer, buffer_size=DEFAULT_BUFFER_SIZE, /)
@@ -904,7 +904,7 @@ Text I/O
 
    .. method:: readline(size=-1, /)
 
-      Read until newline or EOF and return a single ``str``.  If the stream is
+      Read until newline or EOF and return a single :class:`str`.  If the stream is
       already at EOF, an empty string is returned.
 
       If *size* is specified, at most *size* characters will be read.
@@ -913,22 +913,22 @@ Text I/O
 
       Change the stream position to the given *offset*.  Behaviour depends on
       the *whence* parameter.  The default value for *whence* is
-      :data:`SEEK_SET`.
+      :data:`!SEEK_SET`.
 
-      * :data:`SEEK_SET` or ``0``: seek from the start of the stream
+      * :data:`!SEEK_SET` or ``0``: seek from the start of the stream
         (the default); *offset* must either be a number returned by
         :meth:`TextIOBase.tell`, or zero.  Any other *offset* value
         produces undefined behaviour.
-      * :data:`SEEK_CUR` or ``1``: "seek" to the current position;
+      * :data:`!SEEK_CUR` or ``1``: "seek" to the current position;
         *offset* must be zero, which is a no-operation (all other values
         are unsupported).
-      * :data:`SEEK_END` or ``2``: seek to the end of the stream;
+      * :data:`!SEEK_END` or ``2``: seek to the end of the stream;
         *offset* must be zero (all other values are unsupported).
 
       Return the new absolute position as an opaque number.
 
       .. versionadded:: 3.1
-         The ``SEEK_*`` constants.
+         The :data:`!SEEK_*` constants.
 
    .. method:: tell()
 
@@ -988,10 +988,10 @@ Text I/O
      takes place.  If *newline* is any of the other legal values, any ``'\n'``
      characters written are translated to the given string.
 
-   If *line_buffering* is ``True``, :meth:`flush` is implied when a call to
+   If *line_buffering* is ``True``, :meth:`~IOBase.flush` is implied when a call to
    write contains a newline character or a carriage return.
 
-   If *write_through* is ``True``, calls to :meth:`write` are guaranteed
+   If *write_through* is ``True``, calls to :meth:`~BufferedIOBase.write` are guaranteed
    not to be buffered: any data written on the :class:`TextIOWrapper`
    object is immediately handled to its underlying binary *buffer*.
 
@@ -1043,6 +1043,33 @@ Text I/O
       .. versionchanged:: 3.11
          The method supports ``encoding="locale"`` option.
 
+   .. method:: seek(cookie, whence=os.SEEK_SET, /)
+
+      Set the stream position.
+      Return the new stream position as an :class:`int`.
+
+      Four operations are supported,
+      given by the following argument combinations:
+
+      * ``seek(0, SEEK_SET)``: Rewind to the start of the stream.
+      * ``seek(cookie, SEEK_SET)``: Restore a previous position;
+        *cookie* **must be** a number returned by :meth:`tell`.
+      * ``seek(0, SEEK_END)``: Fast-forward to the end of the stream.
+      * ``seek(0, SEEK_CUR)``: Leave the current stream position unchanged.
+
+      Any other argument combinations are invalid,
+      and may raise exceptions.
+
+      .. seealso::
+
+         :data:`os.SEEK_SET`, :data:`os.SEEK_CUR`, and :data:`os.SEEK_END`.
+
+   .. method:: tell()
+
+      Return the stream position as an opaque number.
+      The return value of :meth:`!tell` can be given as input to :meth:`seek`,
+      to restore a previous stream position.
+
 
 .. class:: StringIO(initial_value='', newline='\n')
 
@@ -1070,7 +1097,7 @@ Text I/O
 
    .. method:: getvalue()
 
-      Return a ``str`` containing the entire contents of the buffer.
+      Return a :class:`str` containing the entire contents of the buffer.
       Newlines are decoded as if by :meth:`~TextIOBase.read`, although
       the stream position is not changed.
 
@@ -1125,7 +1152,7 @@ Text I/O over a binary storage (such as a file) is significantly slower than
 binary I/O over the same storage, because it requires conversions between
 unicode and binary data using a character codec.  This can become noticeable
 handling huge amounts of text data like large log files.  Also,
-:meth:`TextIOWrapper.tell` and :meth:`TextIOWrapper.seek` are both quite slow
+:meth:`~TextIOBase.tell` and :meth:`~TextIOBase.seek` are both quite slow
 due to the reconstruction algorithm used.
 
 :class:`StringIO`, however, is a native in-memory unicode container and will
@@ -1135,7 +1162,7 @@ Multi-threading
 ^^^^^^^^^^^^^^^
 
 :class:`FileIO` objects are thread-safe to the extent that the operating system
-calls (such as ``read(2)`` under Unix) they wrap are thread-safe too.
+calls (such as :manpage:`read(2)` under Unix) they wrap are thread-safe too.
 
 Binary buffered objects (instances of :class:`BufferedReader`,
 :class:`BufferedWriter`, :class:`BufferedRandom` and :class:`BufferedRWPair`)
diff --git a/Doc/library/ipaddress.rst b/Doc/library/ipaddress.rst
index 9c2dff55703273..1de36b643c4dca 100644
--- a/Doc/library/ipaddress.rst
+++ b/Doc/library/ipaddress.rst
@@ -219,6 +219,13 @@ write code that handles both IP versions correctly.  Address objects are
       ``True`` if the address is reserved for link-local usage.  See
       :RFC:`3927`.
 
+   .. attribute:: ipv6_mapped
+
+      :class:`IPv4Address` object representing the IPv4-mapped IPv6 address. See :RFC:`4291`.
+
+      .. versionadded:: 3.13
+
+
 .. _iana-ipv4-special-registry: https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
 .. _iana-ipv6-special-registry: https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml
 
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index a0d794017e2602..8a4254cf15ebe2 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -41,7 +41,7 @@ operator can be mapped across two vectors to form an efficient dot-product:
 ==================  =================       =================================================               =========================================
 Iterator            Arguments               Results                                                         Example
 ==================  =================       =================================================               =========================================
-:func:`count`       start, [step]           start, start+step, start+2*step, ...                            ``count(10) --> 10 11 12 13 14 ...``
+:func:`count`       [start[, step]]         start, start+step, start+2*step, ...                            ``count(10) --> 10 11 12 13 14 ...``
 :func:`cycle`       p                       p0, p1, ... plast, p0, p1, ...                                  ``cycle('ABCD') --> A B C D A B C D ...``
 :func:`repeat`      elem [,n]               elem, elem, elem, ... endlessly or up to n times                ``repeat(10, 3) --> 10 10 10``
 ==================  =================       =================================================               =========================================
@@ -147,10 +147,10 @@ loops that truncate the stream.
       >>> list(accumulate(data, max))              # running maximum
       [3, 4, 6, 6, 6, 9, 9, 9, 9, 9]
 
-      # Amortize a 5% loan of 1000 with 4 annual payments of 90
-      >>> cashflows = [1000, -90, -90, -90, -90]
-      >>> list(accumulate(cashflows, lambda bal, pmt: bal*1.05 + pmt))
-      [1000, 960.0, 918.0, 873.9000000000001, 827.5950000000001]
+      # Amortize a 5% loan of 1000 with 10 annual payments of 90
+      >>> account_update = lambda bal, pmt: round(bal * 1.05) + pmt
+      >>> list(accumulate(repeat(-90, 10), account_update, initial=1_000))
+      [1000, 960, 918, 874, 828, 779, 728, 674, 618, 559, 497]
 
     See :func:`functools.reduce` for a similar function that returns only the
     final accumulated value.
@@ -798,10 +798,10 @@ which incur interpreter overhead.
        "Return first n items of the iterable as a list"
        return list(islice(iterable, n))
 
-   def prepend(value, iterator):
-       "Prepend a single value in front of an iterator"
+   def prepend(value, iterable):
+       "Prepend a single value in front of an iterable"
        # prepend(1, [2, 3, 4]) --> 1 2 3 4
-       return chain([value], iterator)
+       return chain([value], iterable)
 
    def tabulate(function, start=0):
        "Return function(0), function(1), ..."
@@ -844,7 +844,7 @@ which incur interpreter overhead.
        return next(islice(iterable, n, None), default)
 
    def quantify(iterable, pred=bool):
-       "Count how many times the predicate is True"
+       "Given a predicate that returns True or False, count the True results."
        return sum(map(pred, iterable))
 
    def all_equal(iterable):
@@ -865,26 +865,23 @@ which incur interpreter overhead.
        # first_true([a,b], x, f) --> a if f(a) else b if f(b) else x
        return next(filter(pred, iterable), default)
 
-   def iter_index(iterable, value, start=0):
+   def iter_index(iterable, value, start=0, stop=None):
        "Return indices where a value occurs in a sequence or iterable."
        # iter_index('AABCADEAF', 'A') --> 0 1 4 7
-       try:
-           seq_index = iterable.index
-       except AttributeError:
+       seq_index = getattr(iterable, 'index', None)
+       if seq_index is None:
            # Slow path for general iterables
-           it = islice(iterable, start, None)
-           i = start - 1
-           try:
-               while True:
-                   yield (i := i + operator.indexOf(it, value) + 1)
-           except ValueError:
-               pass
+           it = islice(iterable, start, stop)
+           for i, element in enumerate(it, start):
+               if element is value or element == value:
+                   yield i
        else:
            # Fast path for sequences
+           stop = len(iterable) if stop is None else stop
            i = start - 1
            try:
                while True:
-                   yield (i := seq_index(value, i+1))
+                   yield (i := seq_index(value, i+1, stop))
            except ValueError:
                pass
 
@@ -919,9 +916,9 @@ which incur interpreter overhead.
        args = [iter(iterable)] * n
        if incomplete == 'fill':
            return zip_longest(*args, fillvalue=fillvalue)
-       if incomplete == 'strict':
+       elif incomplete == 'strict':
            return zip(*args, strict=True)
-       if incomplete == 'ignore':
+       elif incomplete == 'ignore':
            return zip(*args)
        else:
            raise ValueError('Expected fill, strict, or ignore')
@@ -929,9 +926,7 @@ which incur interpreter overhead.
    def sliding_window(iterable, n):
        # sliding_window('ABCDEFG', 4) --> ABCD BCDE CDEF DEFG
        it = iter(iterable)
-       window = collections.deque(islice(it, n), maxlen=n)
-       if len(window) == n:
-           yield tuple(window)
+       window = collections.deque(islice(it, n-1), maxlen=n)
        for x in it:
            window.append(x)
            yield tuple(window)
@@ -951,7 +946,10 @@ which incur interpreter overhead.
                nexts = cycle(islice(nexts, num_active))
 
    def partition(pred, iterable):
-       "Use a predicate to partition entries into false entries and true entries"
+       """Partition entries into false entries and true entries.
+
+       If *pred* is slow, consider wrapping it with functools.lru_cache().
+       """
        # partition(is_odd, range(10)) --> 0 2 4 6 8   and  1 3 5 7 9
        t1, t2 = tee(iterable)
        return filterfalse(pred, t1), filter(pred, t2)
@@ -1030,32 +1028,6 @@ The following recipes have a more mathematical flavor:
        s = list(iterable)
        return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
 
-   def sieve(n):
-       "Primes less than n"
-       # sieve(30) --> 2 3 5 7 11 13 17 19 23 29
-       data = bytearray((0, 1)) * (n // 2)
-       data[:3] = 0, 0, 0
-       limit = math.isqrt(n) + 1
-       for p in compress(range(limit), data):
-           data[p*p : n : p+p] = bytes(len(range(p*p, n, p+p)))
-       data[2] = 1
-       return iter_index(data, 1) if n > 2 else iter([])
-
-   def factor(n):
-       "Prime factors of n."
-       # factor(99) --> 3 3 11
-       for prime in sieve(math.isqrt(n) + 1):
-           while True:
-               quotient, remainder = divmod(n, prime)
-               if remainder:
-                   break
-               yield prime
-               n = quotient
-               if n == 1:
-                   return
-       if n > 1:
-           yield n
-
    def sum_of_squares(it):
        "Add up the squares of the input values."
        # sum_of_squares([10, 20, 30]) -> 1400
@@ -1068,24 +1040,31 @@ The following recipes have a more mathematical flavor:
 
    def matmul(m1, m2):
        "Multiply two matrices."
-       # matmul([(7, 5), (3, 5)], [[2, 5], [7, 9]]) --> (49, 80), (41, 60)
+       # matmul([(7, 5), (3, 5)], [(2, 5), (7, 9)]) --> (49, 80), (41, 60)
        n = len(m2[0])
        return batched(starmap(math.sumprod, product(m1, transpose(m2))), n)
 
    def convolve(signal, kernel):
-       """Linear convolution of two iterables.
+       """Discrete linear convolution of two iterables.
+
+       The kernel is fully consumed before the calculations begin.
+       The signal is consumed lazily and can be infinite.
+
+       Convolutions are mathematically commutative.
+       If the signal and kernel are swapped,
+       the output will be the same.
 
        Article:  https://betterexplained.com/articles/intuitive-convolution/
        Video:    https://www.youtube.com/watch?v=KuXjwB4LzSA
        """
        # convolve(data, [0.25, 0.25, 0.25, 0.25]) --> Moving average (blur)
-       # convolve(data, [1, -1]) --> 1st finite difference (1st derivative)
-       # convolve(data, [1, -2, 1]) --> 2nd finite difference (2nd derivative)
+       # convolve(data, [1/2, 0, -1/2]) --> 1st derivative estimate
+       # convolve(data, [1, -2, 1]) --> 2nd derivative estimate
        kernel = tuple(kernel)[::-1]
        n = len(kernel)
        padded_signal = chain(repeat(0, n-1), signal, repeat(0, n-1))
-       for window in sliding_window(padded_signal, n):
-           yield math.sumprod(kernel, window)
+       windowed_signal = sliding_window(padded_signal, n)
+       return map(math.sumprod, repeat(kernel), windowed_signal)
 
    def polynomial_from_roots(roots):
        """Compute a polynomial's coefficients from its roots.
@@ -1104,11 +1083,50 @@ The following recipes have a more mathematical flavor:
        # Evaluate x³ -4x² -17x + 60 at x = 2.5
        # polynomial_eval([1, -4, -17, 60], x=2.5) --> 8.125
        n = len(coefficients)
-       if n == 0:
-           return x * 0  # coerce zero to the type of x
+       if not n:
+           return type(x)(0)
        powers = map(pow, repeat(x), reversed(range(n)))
        return math.sumprod(coefficients, powers)
 
+   def polynomial_derivative(coefficients):
+       """Compute the first derivative of a polynomial.
+
+          f(x)  =  x³ -4x² -17x + 60
+          f'(x) = 3x² -8x  -17
+       """
+       # polynomial_derivative([1, -4, -17, 60]) -> [3, -8, -17]
+       n = len(coefficients)
+       powers = reversed(range(1, n))
+       return list(map(operator.mul, coefficients, powers))
+
+   def sieve(n):
+       "Primes less than n."
+       # sieve(30) --> 2 3 5 7 11 13 17 19 23 29
+       if n > 2:
+           yield 2
+       start = 3
+       data = bytearray((0, 1)) * (n // 2)
+       limit = math.isqrt(n) + 1
+       for p in iter_index(data, 1, start, limit):
+           yield from iter_index(data, 1, start, p*p)
+           data[p*p : n : p+p] = bytes(len(range(p*p, n, p+p)))
+           start = p*p
+       yield from iter_index(data, 1, start)
+
+   def factor(n):
+       "Prime factors of n."
+       # factor(99) --> 3 3 11
+       # factor(1_000_000_000_000_007) --> 47 59 360620266859
+       # factor(1_000_000_000_000_403) --> 1000000000000403
+       for prime in sieve(math.isqrt(n) + 1):
+           while not n % prime:
+               yield prime
+               n //= prime
+               if n == 1:
+                   return
+       if n > 1:
+           yield n
+
    def nth_combination(iterable, r, index):
        "Equivalent to list(combinations(iterable, r))[index]"
        pool = tuple(iterable)
@@ -1284,7 +1302,7 @@ The following recipes have a more mathematical flavor:
     >>> polynomial_eval([], Fraction(2, 3))
     Fraction(0, 1)
     >>> polynomial_eval([], Decimal('1.75'))
-    Decimal('0.00')
+    Decimal('0')
     >>> polynomial_eval([11], 7) == 11
     True
     >>> polynomial_eval([11, 2], 7) == 11 * 7 + 2
@@ -1297,6 +1315,9 @@ The following recipes have a more mathematical flavor:
     >>> all(factored(x) == expanded(x) for x in range(-10, 11))
     True
 
+    >>> polynomial_derivative([1, -4, -17, 60])
+    [3, -8, -17]
+
     >>> list(iter_index('AABCADEAF', 'A'))
     [0, 1, 4, 7]
     >>> list(iter_index('AABCADEAF', 'B'))
@@ -1317,6 +1338,31 @@ The following recipes have a more mathematical flavor:
     []
     >>> list(iter_index(iter('AABCADEAF'), 'A', 10))
     []
+    >>> list(iter_index('AABCADEAF', 'A', 1, 7))
+    [1, 4]
+    >>> list(iter_index(iter('AABCADEAF'), 'A', 1, 7))
+    [1, 4]
+    >>> # Verify that ValueErrors not swallowed (gh-107208)
+    >>> def assert_no_value(iterable, forbidden_value):
+    ...     for item in iterable:
+    ...         if item == forbidden_value:
+    ...             raise ValueError
+    ...         yield item
+    ...
+    >>> list(iter_index(assert_no_value('AABCADEAF', 'B'), 'A'))
+    Traceback (most recent call last):
+    ...
+    ValueError
+    >>> # Verify that both paths can find identical NaN values
+    >>> x = float('NaN')
+    >>> y = float('NaN')
+    >>> list(iter_index([0, x, x, y, 0], x))
+    [1, 2]
+    >>> list(iter_index(iter([0, x, x, y, 0]), x))
+    [1, 2]
+    >>> # Test list input. Lists do not support None for the stop argument
+    >>> list(iter_index(list('AABCADEAF'), 'A'))
+    [0, 1, 4, 7]
 
     >>> list(sieve(30))
     [2, 3, 5, 7, 11, 13, 17, 19, 23, 29]
@@ -1337,6 +1383,12 @@ The following recipes have a more mathematical flavor:
     >>> set(sieve(10_000)).isdisjoint(carmichael)
     True
 
+    >>> list(factor(99))                    # Code example 1
+    [3, 3, 11]
+    >>> list(factor(1_000_000_000_000_007)) # Code example 2
+    [47, 59, 360620266859]
+    >>> list(factor(1_000_000_000_000_403)) # Code example 3
+    [1000000000000403]
     >>> list(factor(0))
     []
     >>> list(factor(1))
@@ -1403,8 +1455,34 @@ The following recipes have a more mathematical flavor:
     >>> list(grouper('abcdefg', n=3, incomplete='ignore'))
     [('a', 'b', 'c'), ('d', 'e', 'f')]
 
+    >>> list(sliding_window('ABCDEFG', 1))
+    [('A',), ('B',), ('C',), ('D',), ('E',), ('F',), ('G',)]
+    >>> list(sliding_window('ABCDEFG', 2))
+    [('A', 'B'), ('B', 'C'), ('C', 'D'), ('D', 'E'), ('E', 'F'), ('F', 'G')]
+    >>> list(sliding_window('ABCDEFG', 3))
+    [('A', 'B', 'C'), ('B', 'C', 'D'), ('C', 'D', 'E'), ('D', 'E', 'F'), ('E', 'F', 'G')]
     >>> list(sliding_window('ABCDEFG', 4))
     [('A', 'B', 'C', 'D'), ('B', 'C', 'D', 'E'), ('C', 'D', 'E', 'F'), ('D', 'E', 'F', 'G')]
+    >>> list(sliding_window('ABCDEFG', 5))
+    [('A', 'B', 'C', 'D', 'E'), ('B', 'C', 'D', 'E', 'F'), ('C', 'D', 'E', 'F', 'G')]
+    >>> list(sliding_window('ABCDEFG', 6))
+    [('A', 'B', 'C', 'D', 'E', 'F'), ('B', 'C', 'D', 'E', 'F', 'G')]
+    >>> list(sliding_window('ABCDEFG', 7))
+    [('A', 'B', 'C', 'D', 'E', 'F', 'G')]
+    >>> list(sliding_window('ABCDEFG', 8))
+    []
+    >>> try:
+    ...     list(sliding_window('ABCDEFG', -1))
+    ... except ValueError:
+    ...     'zero or negative n not supported'
+    ...
+    'zero or negative n not supported'
+    >>> try:
+    ...     list(sliding_window('ABCDEFG', 0))
+    ... except ValueError:
+    ...     'zero or negative n not supported'
+    ...
+    'zero or negative n not supported'
 
     >>> list(roundrobin('abc', 'd', 'ef'))
     ['a', 'd', 'e', 'b', 'f', 'c']
diff --git a/Doc/library/json.rst b/Doc/library/json.rst
index 00f585124a86b3..0ce4b697145cb3 100644
--- a/Doc/library/json.rst
+++ b/Doc/library/json.rst
@@ -9,11 +9,6 @@
 
 **Source code:** :source:`Lib/json/__init__.py`
 
-.. testsetup:: *
-
-   import json
-   from json import AttrDict
-
 --------------
 
 `JSON (JavaScript Object Notation) <https://json.org>`_, specified by
@@ -59,12 +54,23 @@ Compact encoding::
 Pretty printing::
 
     >>> import json
-    >>> print(json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4))
+    >>> print(json.dumps({'6': 7, '4': 5}, sort_keys=True, indent=4))
     {
         "4": 5,
         "6": 7
     }
 
+Specializing JSON object encoding::
+
+   >>> import json
+   >>> def custom_json(obj):
+   ...     if isinstance(obj, complex):
+   ...         return {'__complex__': True, 'real': obj.real, 'imag': obj.imag}
+   ...     raise TypeError(f'Cannot serialize object of {type(obj)}')
+   ...
+   >>> json.dumps(1 + 2j, default=custom_json)
+   '{"__complex__": true, "real": 1.0, "imag": 2.0}'
+
 Decoding JSON::
 
     >>> import json
@@ -197,7 +203,7 @@ Basic Usage
    dictionaries will be sorted by key.
 
    To use a custom :class:`JSONEncoder` subclass (e.g. one that overrides the
-   :meth:`default` method to serialize additional types), specify it with the
+   :meth:`~JSONEncoder.default` method to serialize additional types), specify it with the
    *cls* kwarg; otherwise :class:`JSONEncoder` is used.
 
    .. versionchanged:: 3.6
@@ -427,7 +433,7 @@ Encoders and Decoders
       Added support for int- and float-derived Enum classes.
 
    To extend this to recognize other objects, subclass and implement a
-   :meth:`default` method with another method that returns a serializable object
+   :meth:`~JSONEncoder.default` method with another method that returns a serializable object
    for ``o`` if possible, otherwise it should call the superclass implementation
    (to raise :exc:`TypeError`).
 
@@ -488,7 +494,7 @@ Encoders and Decoders
       :exc:`TypeError`).
 
       For example, to support arbitrary iterators, you could implement
-      :meth:`default` like this::
+      :meth:`~JSONEncoder.default` like this::
 
          def default(self, o):
             try:
@@ -548,44 +554,6 @@ Exceptions
 
    .. versionadded:: 3.5
 
-.. class:: AttrDict(**kwargs)
-           AttrDict(mapping, **kwargs)
-           AttrDict(iterable, **kwargs)
-
-   Subclass of :class:`dict` object that also supports attribute style dotted access.
-
-   This class is intended for use with the :attr:`object_hook` in
-   :func:`json.load` and :func:`json.loads`::
-
-   .. doctest::
-
-        >>> json_string = '{"mercury": 88, "venus": 225, "earth": 365, "mars": 687}'
-        >>> orbital_period = json.loads(json_string, object_hook=AttrDict)
-        >>> orbital_period['earth']     # Dict style lookup
-        365
-        >>> orbital_period.earth        # Attribute style lookup
-        365
-        >>> orbital_period.keys()       # All dict methods are present
-        dict_keys(['mercury', 'venus', 'earth', 'mars'])
-
-   Attribute style access only works for keys that are valid attribute
-   names.  In contrast, dictionary style access works for all keys.  For
-   example, ``d.two words`` contains a space and is not syntactically
-   valid Python, so ``d["two words"]`` should be used instead.
-
-   If a key has the same name as a dictionary method, then a dictionary
-   lookup finds the key and an attribute lookup finds the method:
-
-   .. doctest::
-
-        >>> d = AttrDict(items=50)
-        >>> d['items']                  # Lookup the key
-        50
-        >>> d.items()                   # Call the method
-        dict_items([('items', 50)])
-
-   .. versionadded:: 3.12
-
 
 Standard Compliance and Interoperability
 ----------------------------------------
@@ -726,7 +694,7 @@ The :mod:`json.tool` module provides a simple command line interface to validate
 and pretty-print JSON objects.
 
 If the optional ``infile`` and ``outfile`` arguments are not
-specified, :attr:`sys.stdin` and :attr:`sys.stdout` will be used respectively:
+specified, :data:`sys.stdin` and :data:`sys.stdout` will be used respectively:
 
 .. code-block:: shell-session
 
@@ -746,7 +714,7 @@ specified, :attr:`sys.stdin` and :attr:`sys.stdout` will be used respectively:
 Command line options
 ^^^^^^^^^^^^^^^^^^^^
 
-.. cmdoption:: infile
+.. option:: infile
 
    The JSON file to be validated or pretty-printed:
 
@@ -764,38 +732,38 @@ Command line options
           }
       ]
 
-   If *infile* is not specified, read from :attr:`sys.stdin`.
+   If *infile* is not specified, read from :data:`sys.stdin`.
 
-.. cmdoption:: outfile
+.. option:: outfile
 
    Write the output of the *infile* to the given *outfile*. Otherwise, write it
-   to :attr:`sys.stdout`.
+   to :data:`sys.stdout`.
 
-.. cmdoption:: --sort-keys
+.. option:: --sort-keys
 
    Sort the output of dictionaries alphabetically by key.
 
    .. versionadded:: 3.5
 
-.. cmdoption:: --no-ensure-ascii
+.. option:: --no-ensure-ascii
 
    Disable escaping of non-ascii characters, see :func:`json.dumps` for more information.
 
    .. versionadded:: 3.9
 
-.. cmdoption:: --json-lines
+.. option:: --json-lines
 
    Parse every input line as separate JSON object.
 
    .. versionadded:: 3.8
 
-.. cmdoption:: --indent, --tab, --no-indent, --compact
+.. option:: --indent, --tab, --no-indent, --compact
 
    Mutually exclusive options for whitespace control.
 
    .. versionadded:: 3.9
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    Show the help message.
 
diff --git a/Doc/library/kde_example.png b/Doc/library/kde_example.png
new file mode 100644
index 00000000000000..f4504895699974
Binary files /dev/null and b/Doc/library/kde_example.png differ
diff --git a/Doc/library/locale.rst b/Doc/library/locale.rst
index f2abb3638a141f..0d48892fcdab97 100644
--- a/Doc/library/locale.rst
+++ b/Doc/library/locale.rst
@@ -303,7 +303,7 @@ The :mod:`locale` module defines the following exception and functions:
    *language code* and *encoding* may be ``None`` if their values cannot be
    determined.
 
-   .. deprecated-removed:: 3.11 3.13
+   .. deprecated-removed:: 3.11 3.15
 
 
 .. function:: getlocale(category=LC_CTYPE)
@@ -370,16 +370,6 @@ The :mod:`locale` module defines the following exception and functions:
    encoding for the locale code just like :func:`setlocale`.
 
 
-.. function:: resetlocale(category=LC_ALL)
-
-   Sets the locale for *category* to the default setting.
-
-   The default setting is determined by calling :func:`getdefaultlocale`.
-   *category* defaults to :const:`LC_ALL`.
-
-   .. deprecated-removed:: 3.11 3.13
-
-
 .. function:: strcoll(string1, string2)
 
    Compares two strings according to the current :const:`LC_COLLATE` setting. As
@@ -464,11 +454,16 @@ The :mod:`locale` module defines the following exception and functions:
 
 .. data:: LC_CTYPE
 
-   .. index:: pair: module; string
+   Locale category for the character type functions.  Most importantly, this
+   category defines the text encoding, i.e. how bytes are interpreted as
+   Unicode codepoints.  See :pep:`538` and :pep:`540` for how this variable
+   might be automatically coerced to ``C.UTF-8`` to avoid issues created by
+   invalid settings in containers or incompatible settings passed over remote
+   SSH connections.
 
-   Locale category for the character type functions.  Depending on the settings of
-   this category, the functions of module :mod:`string` dealing with case change
-   their behaviour.
+   Python doesn't internally use locale-dependent character transformation functions
+   from ``ctype.h``. Instead, an internal ``pyctype.h`` provides locale-independent
+   equivalents like :c:macro:`!Py_TOLOWER`.
 
 
 .. data:: LC_COLLATE
diff --git a/Doc/library/logging.config.rst b/Doc/library/logging.config.rst
index 250246b5cd9adc..85a53e6aa7a78b 100644
--- a/Doc/library/logging.config.rst
+++ b/Doc/library/logging.config.rst
@@ -87,6 +87,10 @@ in :mod:`logging` itself) and defining handlers which are declared either in
    provides a mechanism to present the choices and load the chosen
    configuration).
 
+   It will raise :exc:`FileNotFoundError` if the file
+   doesn't exist and :exc:`RuntimeError` if the file is invalid or
+   empty.
+
    :param fname: A filename, or a file-like object, or an instance derived
                  from :class:`~configparser.RawConfigParser`. If a
                  ``RawConfigParser``-derived instance is passed, it is used as
@@ -111,7 +115,7 @@ in :mod:`logging` itself) and defining handlers which are declared either in
                                     they or their ancestors are explicitly named
                                     in the logging configuration.
 
-    :param encoding: The encoding used to open file when *fname* is filename.
+   :param encoding: The encoding used to open file when *fname* is filename.
 
    .. versionchanged:: 3.4
       An instance of a subclass of :class:`~configparser.RawConfigParser` is
@@ -126,6 +130,10 @@ in :mod:`logging` itself) and defining handlers which are declared either in
     .. versionadded:: 3.10
        The *encoding* parameter is added.
 
+    .. versionchanged:: 3.12
+       An exception will be thrown if the provided file
+       doesn't exist or is invalid or empty.
+
 .. function:: listen(port=DEFAULT_LOGGING_CONFIG_PORT, verify=None)
 
    Starts up a socket server on the specified port, and listens for new
@@ -249,11 +257,11 @@ otherwise, the context is used to determine what to instantiate.
   which correspond to the arguments passed to create a
   :class:`~logging.Formatter` object:
 
-   * ``format``
-   * ``datefmt``
-   * ``style``
-   * ``validate`` (since version >=3.8)
-   * ``defaults`` (since version >=3.12)
+  * ``format``
+  * ``datefmt``
+  * ``style``
+  * ``validate`` (since version >=3.8)
+  * ``defaults`` (since version >=3.12)
 
   An optional ``class`` key indicates the name of the formatter's
   class (as a dotted module and class name).  The instantiation
@@ -536,9 +544,9 @@ valid keyword parameter name, and so will not clash with the names of
 the keyword arguments used in the call.  The ``'()'`` also serves as a
 mnemonic that the corresponding value is a callable.
 
-    .. versionchanged:: 3.11
-       The ``filters`` member of ``handlers`` and ``loggers`` can take
-       filter instances in addition to ids.
+.. versionchanged:: 3.11
+   The ``filters`` member of ``handlers`` and ``loggers`` can take
+   filter instances in addition to ids.
 
 You can also specify a special key ``'.'`` whose value is a dictionary is a
 mapping of attribute names to values. If found, the specified attributes will
@@ -677,7 +685,8 @@ resolve to ``'dev_team@domain.tld'`` and the string
 ``'support_team@domain.tld'``. The ``subject`` value could be accessed
 using either ``'cfg://handlers.email.subject'`` or, equivalently,
 ``'cfg://handlers.email[subject]'``.  The latter form only needs to be
-used if the key contains spaces or non-alphanumeric characters.  If an
+used if the key contains spaces or non-alphanumeric characters. Please note
+that the characters ``[`` and ``]`` are not allowed in the keys. If an
 index value consists only of decimal digits, access will be attempted
 using the corresponding integer value, falling back to the string
 value if needed.
diff --git a/Doc/library/logging.handlers.rst b/Doc/library/logging.handlers.rst
index d4429d3d0a4f73..2dd4bd081b0429 100644
--- a/Doc/library/logging.handlers.rst
+++ b/Doc/library/logging.handlers.rst
@@ -97,7 +97,7 @@ sends logging output to a disk file.  It inherits the output functionality from
 
    Returns a new instance of the :class:`FileHandler` class. The specified file is
    opened and used as the stream for logging. If *mode* is not specified,
-   :const:`'a'` is used.  If *encoding* is not ``None``, it is used to open the file
+   ``'a'`` is used.  If *encoding* is not ``None``, it is used to open the file
    with that encoding.  If *delay* is true, then file opening is deferred until the
    first call to :meth:`emit`. By default, the file grows indefinitely. If
    *errors* is specified, it's used to determine how encoding errors are handled.
@@ -182,7 +182,7 @@ for this value.
 
    Returns a new instance of the :class:`WatchedFileHandler` class. The specified
    file is opened and used as the stream for logging. If *mode* is not specified,
-   :const:`'a'` is used.  If *encoding* is not ``None``, it is used to open the file
+   ``'a'`` is used.  If *encoding* is not ``None``, it is used to open the file
    with that encoding.  If *delay* is true, then file opening is deferred until the
    first call to :meth:`emit`.  By default, the file grows indefinitely. If
    *errors* is provided, it determines how encoding errors are handled.
@@ -656,9 +656,7 @@ supports sending logging messages to a remote or local Unix syslog.
       to the other end. This method is called during handler initialization,
       but it's not regarded as an error if the other end isn't listening at
       this point - the method will be called again when emitting an event, if
-      but it's not regarded as an error if the other end isn't listening yet
-      --- the method will be called again when emitting an event,
-      if there is no socket at that point.
+      there is no socket at that point.
 
       .. versionadded:: 3.11
 
@@ -917,8 +915,9 @@ should, then :meth:`flush` is expected to do the flushing.
 
    .. method:: flush()
 
-      You can override this to implement custom flushing behavior. This version
-      just zaps the buffer to empty.
+      For a :class:`BufferingHandler` instance, flushing means that it sets the
+      buffer to an empty list. This method can be overwritten to implement more useful
+      flushing behavior.
 
 
    .. method:: shouldFlush(record)
@@ -950,9 +949,9 @@ should, then :meth:`flush` is expected to do the flushing.
 
    .. method:: flush()
 
-      For a :class:`MemoryHandler`, flushing means just sending the buffered
+      For a :class:`MemoryHandler` instance, flushing means just sending the buffered
       records to the target, if there is one. The buffer is also cleared when
-      this happens. Override if you want different behavior.
+      buffered records are sent to the target. Override if you want different behavior.
 
 
    .. method:: setTarget(target)
@@ -1051,8 +1050,8 @@ possible, while any potentially slow operations (such as sending an email via
       occur (e.g. because a bounded queue has filled up), the
       :meth:`~logging.Handler.handleError` method is called to handle the
       error. This can result in the record silently being dropped (if
-      :attr:`logging.raiseExceptions` is ``False``) or a message printed to
-      ``sys.stderr`` (if :attr:`logging.raiseExceptions` is ``True``).
+      :data:`logging.raiseExceptions` is ``False``) or a message printed to
+      ``sys.stderr`` (if :data:`logging.raiseExceptions` is ``True``).
 
    .. method:: prepare(record)
 
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 22412e1a2113bb..acdeb88a546261 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -275,6 +275,10 @@ is the module's name in the Python package namespace.
       .. versionchanged:: 3.8
          The *stacklevel* parameter was added.
 
+      .. versionchanged:: 3.13
+         Remove the undocumented ``warn()`` method which was an alias to the
+         :meth:`warning` method.
+
 
    .. method:: Logger.info(msg, *args, **kwargs)
 
@@ -287,10 +291,6 @@ is the module's name in the Python package namespace.
       Logs a message with level :const:`WARNING` on this logger. The arguments are
       interpreted as for :meth:`debug`.
 
-      .. note:: There is an obsolete method ``warn`` which is functionally
-         identical to ``warning``. As ``warn`` is deprecated, please do not use
-         it - use ``warning`` instead.
-
    .. method:: Logger.error(msg, *args, **kwargs)
 
       Logs a message with level :const:`ERROR` on this logger. The arguments are
@@ -397,21 +397,39 @@ have specific values relative to the predefined levels. If you define a level
 with the same numeric value, it overwrites the predefined value; the predefined
 name is lost.
 
-+--------------+---------------+
-| Level        | Numeric value |
-+==============+===============+
-| ``CRITICAL`` | 50            |
-+--------------+---------------+
-| ``ERROR``    | 40            |
-+--------------+---------------+
-| ``WARNING``  | 30            |
-+--------------+---------------+
-| ``INFO``     | 20            |
-+--------------+---------------+
-| ``DEBUG``    | 10            |
-+--------------+---------------+
-| ``NOTSET``   | 0             |
-+--------------+---------------+
++-----------------------+---------------+-------------------------------------+
+| Level                 | Numeric value | What it means / When to use it      |
++=======================+===============+=====================================+
+| .. py:data:: NOTSET   | 0             | When set on a logger, indicates that|
+|                       |               | ancestor loggers are to be consulted|
+|                       |               | to determine the effective level.   |
+|                       |               | If that still resolves to           |
+|                       |               | :const:`!NOTSET`, then all events   |
+|                       |               | are logged. When set on a handler,  |
+|                       |               | all events are handled.             |
++-----------------------+---------------+-------------------------------------+
+| .. py:data:: DEBUG    | 10            | Detailed information, typically only|
+|                       |               | of interest to a developer trying to|
+|                       |               | diagnose a problem.                 |
++-----------------------+---------------+-------------------------------------+
+| .. py:data:: INFO     | 20            | Confirmation that things are working|
+|                       |               | as expected.                        |
++-----------------------+---------------+-------------------------------------+
+| .. py:data:: WARNING  | 30            | An indication that something        |
+|                       |               | unexpected happened, or that a      |
+|                       |               | problem might occur in the near     |
+|                       |               | future (e.g. 'disk space low'). The |
+|                       |               | software is still working as        |
+|                       |               | expected.                           |
++-----------------------+---------------+-------------------------------------+
+| .. py:data:: ERROR    | 40            | Due to a more serious problem, the  |
+|                       |               | software has not been able to       |
+|                       |               | perform some function.              |
++-----------------------+---------------+-------------------------------------+
+| .. py:data:: CRITICAL | 50            | A serious error, indicating that the|
+|                       |               | program itself may be unable to     |
+|                       |               | continue running.                   |
++-----------------------+---------------+-------------------------------------+
 
 
 .. _handler:
@@ -421,7 +439,7 @@ Handler Objects
 
 Handlers have the following attributes and methods. Note that :class:`Handler`
 is never instantiated directly; this class acts as a base for more useful
-subclasses. However, the :meth:`__init__` method in subclasses needs to call
+subclasses. However, the :meth:`!__init__` method in subclasses needs to call
 :meth:`Handler.__init__`.
 
 .. class:: Handler
@@ -889,7 +907,7 @@ you want to use.
 
 In the case of {}-formatting, you can specify formatting flags by placing them
 after the attribute name, separated from it with a colon. For example: a
-placeholder of ``{msecs:03d}`` would format a millisecond value of ``4`` as
+placeholder of ``{msecs:03.0f}`` would format a millisecond value of ``4`` as
 ``004``. Refer to the :meth:`str.format` documentation for full details on
 the options available to you.
 
@@ -984,10 +1002,14 @@ LoggerAdapter Objects
 information into logging calls. For a usage example, see the section on
 :ref:`adding contextual information to your logging output <context-info>`.
 
-.. class:: LoggerAdapter(logger, extra)
+.. class:: LoggerAdapter(logger, extra, merge_extra=False)
 
    Returns an instance of :class:`LoggerAdapter` initialized with an
-   underlying :class:`Logger` instance and a dict-like object.
+   underlying :class:`Logger` instance, a dict-like object (*extra*), and a
+   boolean (*merge_extra*) indicating whether or not the *extra* argument of
+   individual log calls should be merged with the :class:`LoggerAdapter` extra.
+   The default behavior is to ignore the *extra* argument of individual log
+   calls and only use the one of the :class:`LoggerAdapter` instance
 
    .. method:: process(msg, kwargs)
 
@@ -997,23 +1019,42 @@ information into logging calls. For a usage example, see the section on
       'extra'. The return value is a (*msg*, *kwargs*) tuple which has the
       (possibly modified) versions of the arguments passed in.
 
-In addition to the above, :class:`LoggerAdapter` supports the following
-methods of :class:`Logger`: :meth:`~Logger.debug`, :meth:`~Logger.info`,
-:meth:`~Logger.warning`, :meth:`~Logger.error`, :meth:`~Logger.exception`,
-:meth:`~Logger.critical`, :meth:`~Logger.log`, :meth:`~Logger.isEnabledFor`,
-:meth:`~Logger.getEffectiveLevel`, :meth:`~Logger.setLevel` and
-:meth:`~Logger.hasHandlers`. These methods have the same signatures as their
-counterparts in :class:`Logger`, so you can use the two types of instances
-interchangeably.
+   .. attribute:: manager
 
-.. versionchanged:: 3.2
-   The :meth:`~Logger.isEnabledFor`, :meth:`~Logger.getEffectiveLevel`,
-   :meth:`~Logger.setLevel` and :meth:`~Logger.hasHandlers` methods were added
-   to :class:`LoggerAdapter`.  These methods delegate to the underlying logger.
+      Delegates to the underlying :attr:`!manager`` on *logger*.
+
+   .. attribute:: _log
+
+      Delegates to the underlying :meth:`!_log`` method on *logger*.
+
+   In addition to the above, :class:`LoggerAdapter` supports the following
+   methods of :class:`Logger`: :meth:`~Logger.debug`, :meth:`~Logger.info`,
+   :meth:`~Logger.warning`, :meth:`~Logger.error`, :meth:`~Logger.exception`,
+   :meth:`~Logger.critical`, :meth:`~Logger.log`, :meth:`~Logger.isEnabledFor`,
+   :meth:`~Logger.getEffectiveLevel`, :meth:`~Logger.setLevel` and
+   :meth:`~Logger.hasHandlers`. These methods have the same signatures as their
+   counterparts in :class:`Logger`, so you can use the two types of instances
+   interchangeably.
+
+   .. versionchanged:: 3.2
 
-.. versionchanged:: 3.6
-   Attribute :attr:`manager` and method :meth:`_log` were added, which
-   delegate to the underlying logger and allow adapters to be nested.
+      The :meth:`~Logger.isEnabledFor`, :meth:`~Logger.getEffectiveLevel`,
+      :meth:`~Logger.setLevel` and :meth:`~Logger.hasHandlers` methods were added
+      to :class:`LoggerAdapter`.  These methods delegate to the underlying logger.
+
+   .. versionchanged:: 3.6
+
+      Attribute :attr:`!manager` and method :meth:`!_log` were added, which
+      delegate to the underlying logger and allow adapters to be nested.
+
+   .. versionchanged:: 3.13
+
+      Remove the undocumented :meth:`!warn`` method which was an alias to the
+      :meth:`!warning` method.
+
+   .. versionchanged:: 3.13
+
+      The *merge_extra* argument was added.
 
 
 Thread Safety
@@ -1162,6 +1203,10 @@ functions.
       identical to ``warning``. As ``warn`` is deprecated, please do not use
       it - use ``warning`` instead.
 
+   .. versionchanged:: 3.13
+      Remove the undocumented ``warn()`` function which was an alias to the
+      :func:`warning` function.
+
 
 .. function:: error(msg, *args, **kwargs)
 
@@ -1397,8 +1442,8 @@ functions.
 .. function:: setLoggerClass(klass)
 
    Tells the logging system to use the class *klass* when instantiating a logger.
-   The class should define :meth:`__init__` such that only a name argument is
-   required, and the :meth:`__init__` should call :meth:`Logger.__init__`. This
+   The class should define :meth:`!__init__` such that only a name argument is
+   required, and the :meth:`!__init__` should call :meth:`!Logger.__init__`. This
    function is typically called before any loggers are instantiated by applications
    which need to use custom logger behavior. After this call, as at any other
    time, do not instantiate loggers directly using the subclass: continue to use
diff --git a/Doc/library/lzma.rst b/Doc/library/lzma.rst
index 868d4dcfb6c996..0d69c3bc01d1e2 100644
--- a/Doc/library/lzma.rst
+++ b/Doc/library/lzma.rst
@@ -100,7 +100,8 @@ Reading and writing compressed files
    *filters* arguments have the same meanings as for :class:`LZMACompressor`.
 
    :class:`LZMAFile` supports all the members specified by
-   :class:`io.BufferedIOBase`, except for :meth:`detach` and :meth:`truncate`.
+   :class:`io.BufferedIOBase`, except for :meth:`~io.BufferedIOBase.detach`
+   and :meth:`~io.IOBase.truncate`.
    Iteration and the :keyword:`with` statement are supported.
 
    The following method is also provided:
@@ -332,19 +333,22 @@ the key ``"id"``, and may contain additional keys to specify filter-dependent
 options. Valid filter IDs are as follows:
 
 * Compression filters:
-   * :const:`FILTER_LZMA1` (for use with :const:`FORMAT_ALONE`)
-   * :const:`FILTER_LZMA2` (for use with :const:`FORMAT_XZ` and :const:`FORMAT_RAW`)
+
+  * :const:`FILTER_LZMA1` (for use with :const:`FORMAT_ALONE`)
+  * :const:`FILTER_LZMA2` (for use with :const:`FORMAT_XZ` and :const:`FORMAT_RAW`)
 
 * Delta filter:
-   * :const:`FILTER_DELTA`
+
+  * :const:`FILTER_DELTA`
 
 * Branch-Call-Jump (BCJ) filters:
-   * :const:`FILTER_X86`
-   * :const:`FILTER_IA64`
-   * :const:`FILTER_ARM`
-   * :const:`FILTER_ARMTHUMB`
-   * :const:`FILTER_POWERPC`
-   * :const:`FILTER_SPARC`
+
+  * :const:`FILTER_X86`
+  * :const:`FILTER_IA64`
+  * :const:`FILTER_ARM`
+  * :const:`FILTER_ARMTHUMB`
+  * :const:`FILTER_POWERPC`
+  * :const:`FILTER_SPARC`
 
 A filter chain can consist of up to 4 filters, and cannot be empty. The last
 filter in the chain must be a compression filter, and any other filters must be
@@ -353,21 +357,21 @@ delta or BCJ filters.
 Compression filters support the following options (specified as additional
 entries in the dictionary representing the filter):
 
-   * ``preset``: A compression preset to use as a source of default values for
-     options that are not specified explicitly.
-   * ``dict_size``: Dictionary size in bytes. This should be between 4 KiB and
-     1.5 GiB (inclusive).
-   * ``lc``: Number of literal context bits.
-   * ``lp``: Number of literal position bits. The sum ``lc + lp`` must be at
-     most 4.
-   * ``pb``: Number of position bits; must be at most 4.
-   * ``mode``: :const:`MODE_FAST` or :const:`MODE_NORMAL`.
-   * ``nice_len``: What should be considered a "nice length" for a match.
-     This should be 273 or less.
-   * ``mf``: What match finder to use -- :const:`MF_HC3`, :const:`MF_HC4`,
-     :const:`MF_BT2`, :const:`MF_BT3`, or :const:`MF_BT4`.
-   * ``depth``: Maximum search depth used by match finder. 0 (default) means to
-     select automatically based on other filter options.
+* ``preset``: A compression preset to use as a source of default values for
+  options that are not specified explicitly.
+* ``dict_size``: Dictionary size in bytes. This should be between 4 KiB and
+  1.5 GiB (inclusive).
+* ``lc``: Number of literal context bits.
+* ``lp``: Number of literal position bits. The sum ``lc + lp`` must be at
+  most 4.
+* ``pb``: Number of position bits; must be at most 4.
+* ``mode``: :const:`MODE_FAST` or :const:`MODE_NORMAL`.
+* ``nice_len``: What should be considered a "nice length" for a match.
+  This should be 273 or less.
+* ``mf``: What match finder to use -- :const:`MF_HC3`, :const:`MF_HC4`,
+  :const:`MF_BT2`, :const:`MF_BT3`, or :const:`MF_BT4`.
+* ``depth``: Maximum search depth used by match finder. 0 (default) means to
+  select automatically based on other filter options.
 
 The delta filter stores the differences between bytes, producing more repetitive
 input for the compressor in certain circumstances. It supports one option,
diff --git a/Doc/library/mailbox.rst b/Doc/library/mailbox.rst
index 56908dedea1b40..05ffaf6c9b336e 100644
--- a/Doc/library/mailbox.rst
+++ b/Doc/library/mailbox.rst
@@ -167,7 +167,7 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
       Return a representation of the message corresponding to *key*. If no such
       message exists, *default* is returned if the method was called as
       :meth:`get` and a :exc:`KeyError` exception is raised if the method was
-      called as :meth:`__getitem__`. The message is represented as an instance
+      called as :meth:`~object.__getitem__`. The message is represented as an instance
       of the appropriate format-specific :class:`Message` subclass unless a
       custom message factory was specified when the :class:`Mailbox` instance
       was initialized.
@@ -424,6 +424,108 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
       remove the underlying message while the returned file remains open.
 
 
+   .. method:: get_flags(key)
+
+      Return as a string the flags that are set on the message
+      corresponding to *key*.
+      This is the same as ``get_message(key).get_flags()`` but much
+      faster, because it does not open the message file.
+      Use this method when iterating over the keys to determine which
+      messages are interesting to get.
+
+      If you do have a :class:`MaildirMessage` object, use
+      its :meth:`~MaildirMessage.get_flags` method instead, because
+      changes made by the message's :meth:`~MaildirMessage.set_flags`,
+      :meth:`~MaildirMessage.add_flag` and :meth:`~MaildirMessage.remove_flag`
+      methods are not reflected here until the mailbox's
+      :meth:`__setitem__` method is called.
+
+      .. versionadded:: 3.13
+
+
+   .. method:: set_flags(key, flags)
+
+      On the message corresponding to *key*, set the flags specified
+      by *flags* and unset all others.
+      Calling ``some_mailbox.set_flags(key, flags)`` is similar to ::
+
+         one_message = some_mailbox.get_message(key)
+         one_message.set_flags(flags)
+         some_mailbox[key] = one_message
+
+      but faster, because it does not open the message file.
+
+      If you do have a :class:`MaildirMessage` object, use
+      its :meth:`~MaildirMessage.set_flags` method instead, because
+      changes made with this mailbox method will not be visible to the
+      message object's method, :meth:`~MaildirMessage.get_flags`.
+
+      .. versionadded:: 3.13
+
+
+   .. method:: add_flag(key, flag)
+
+      On the message corresponding to *key*, set the flags specified
+      by *flag* without changing other flags. To add more than one
+      flag at a time, *flag* may be a string of more than one character.
+
+      Considerations for using this method versus the message object's
+      :meth:`~MaildirMessage.add_flag` method are similar to
+      those for :meth:`set_flags`; see the discussion there.
+
+      .. versionadded:: 3.13
+
+
+   .. method:: remove_flag(key, flag)
+
+      On the message corresponding to *key*, unset the flags specified
+      by *flag* without changing other flags. To remove more than one
+      flag at a time, *flag* may be a string of more than one character.
+
+      Considerations for using this method versus the message object's
+      :meth:`~MaildirMessage.remove_flag` method are similar to
+      those for :meth:`set_flags`; see the discussion there.
+
+      .. versionadded:: 3.13
+
+
+   .. method:: get_info(key)
+
+      Return a string containing the info for the message
+      corresponding to *key*.
+      This is the same as ``get_message(key).get_info()`` but much
+      faster, because it does not open the message file.
+      Use this method when iterating over the keys to determine which
+      messages are interesting to get.
+
+      If you do have a :class:`MaildirMessage` object, use
+      its :meth:`~MaildirMessage.get_info` method instead, because
+      changes made by the message's :meth:`~MaildirMessage.set_info` method
+      are not reflected here until the mailbox's :meth:`__setitem__` method
+      is called.
+
+      .. versionadded:: 3.13
+
+
+   .. method:: set_info(key, info)
+
+      Set the info of the message corresponding to *key* to *info*.
+      Calling ``some_mailbox.set_info(key, flags)`` is similar to ::
+
+         one_message = some_mailbox.get_message(key)
+         one_message.set_info(info)
+         some_mailbox[key] = one_message
+
+      but faster, because it does not open the message file.
+
+      If you do have a :class:`MaildirMessage` object, use
+      its :meth:`~MaildirMessage.set_info` method instead, because
+      changes made with this mailbox method will not be visible to the
+      message object's method, :meth:`~MaildirMessage.get_info`.
+
+      .. versionadded:: 3.13
+
+
 .. seealso::
 
    `maildir man page from Courier <https://www.courier-mta.org/maildir.html>`_
@@ -477,7 +579,7 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
                unlock()
 
       Three locking mechanisms are used---dot locking and, if available, the
-      :c:func:`flock` and :c:func:`lockf` system calls.
+      :c:func:`!flock` and :c:func:`!lockf` system calls.
 
 
 .. seealso::
@@ -588,7 +690,7 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
                unlock()
 
       Three locking mechanisms are used---dot locking and, if available, the
-      :c:func:`flock` and :c:func:`lockf` system calls. For MH mailboxes, locking
+      :c:func:`!flock` and :c:func:`!lockf` system calls. For MH mailboxes, locking
       the mailbox means locking the :file:`.mh_sequences` file and, only for the
       duration of any operations that affect them, locking individual message
       files.
@@ -686,7 +788,7 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
                unlock()
 
       Three locking mechanisms are used---dot locking and, if available, the
-      :c:func:`flock` and :c:func:`lockf` system calls.
+      :c:func:`!flock` and :c:func:`!lockf` system calls.
 
 
 .. seealso::
@@ -737,7 +839,7 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
                unlock()
 
       Three locking mechanisms are used---dot locking and, if available, the
-      :c:func:`flock` and :c:func:`lockf` system calls.
+      :c:func:`!flock` and :c:func:`!lockf` system calls.
 
 
 .. seealso::
@@ -838,7 +940,7 @@ Supported mailbox formats are Maildir, mbox, MH, Babyl, and MMDF.
       .. note::
 
          A message is typically moved from :file:`new` to :file:`cur` after its
-         mailbox has been accessed, whether or not the message is has been
+         mailbox has been accessed, whether or not the message has been
          read. A message ``msg`` has been read if ``"S" in msg.get_flags()`` is
          ``True``.
 
diff --git a/Doc/library/mailcap.rst b/Doc/library/mailcap.rst
deleted file mode 100644
index bfaedb46091991..00000000000000
--- a/Doc/library/mailcap.rst
+++ /dev/null
@@ -1,94 +0,0 @@
-:mod:`mailcap` --- Mailcap file handling
-========================================
-
-.. module:: mailcap
-   :synopsis: Mailcap file handling.
-   :deprecated:
-
-**Source code:** :source:`Lib/mailcap.py`
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`mailcap` module is deprecated
-   (see :pep:`PEP 594 <594#mailcap>` for details).
-   The :mod:`mimetypes` module provides an alternative.
-
---------------
-
-Mailcap files are used to configure how MIME-aware applications such as mail
-readers and web browsers react to files with different MIME types. (The name
-"mailcap" is derived from the phrase "mail capability".)  For example, a mailcap
-file might contain a line like ``video/mpeg; xmpeg %s``.  Then, if the user
-encounters an email message or web document with the MIME type
-:mimetype:`video/mpeg`, ``%s`` will be replaced by a filename (usually one
-belonging to a temporary file) and the :program:`xmpeg` program can be
-automatically started to view the file.
-
-The mailcap format is documented in :rfc:`1524`, "A User Agent Configuration
-Mechanism For Multimedia Mail Format Information", but is not an internet
-standard.  However, mailcap files are supported on most Unix systems.
-
-
-.. function:: findmatch(caps, MIMEtype, key='view', filename='/dev/null', plist=[])
-
-   Return a 2-tuple; the first element is a string containing the command line to
-   be executed (which can be passed to :func:`os.system`), and the second element
-   is the mailcap entry for a given MIME type.  If no matching MIME type can be
-   found, ``(None, None)`` is returned.
-
-   *key* is the name of the field desired, which represents the type of activity to
-   be performed; the default value is 'view', since in the  most common case you
-   simply want to view the body of the MIME-typed data.  Other possible values
-   might be 'compose' and 'edit', if you wanted to create a new body of the given
-   MIME type or alter the existing body data.  See :rfc:`1524` for a complete list
-   of these fields.
-
-   *filename* is the filename to be substituted for ``%s`` in the command line; the
-   default value is ``'/dev/null'`` which is almost certainly not what you want, so
-   usually you'll override it by specifying a filename.
-
-   *plist* can be a list containing named parameters; the default value is simply
-   an empty list.  Each entry in the list must be a string containing the parameter
-   name, an equals sign (``'='``), and the parameter's value.  Mailcap entries can
-   contain  named parameters like ``%{foo}``, which will be replaced by the value
-   of the parameter named 'foo'.  For example, if the command line ``showpartial
-   %{id} %{number} %{total}`` was in a mailcap file, and *plist* was set to
-   ``['id=1', 'number=2', 'total=3']``, the resulting command line would be
-   ``'showpartial 1 2 3'``.
-
-   In a mailcap file, the "test" field can optionally be specified to test some
-   external condition (such as the machine architecture, or the window system in
-   use) to determine whether or not the mailcap line applies.  :func:`findmatch`
-   will automatically check such conditions and skip the entry if the check fails.
-
-   .. versionchanged:: 3.11
-
-      To prevent security issues with shell metacharacters (symbols that have
-      special effects in a shell command line), ``findmatch`` will refuse
-      to inject ASCII characters other than alphanumerics and ``@+=:,./-_``
-      into the returned command line.
-
-      If a disallowed character appears in *filename*, ``findmatch`` will always
-      return ``(None, None)`` as if no entry was found.
-      If such a character appears elsewhere (a value in *plist* or in *MIMEtype*),
-      ``findmatch`` will ignore all mailcap entries which use that value.
-      A :mod:`warning <warnings>` will be raised in either case.
-
-.. function:: getcaps()
-
-   Returns a dictionary mapping MIME types to a list of mailcap file entries. This
-   dictionary must be passed to the :func:`findmatch` function.  An entry is stored
-   as a list of dictionaries, but it shouldn't be necessary to know the details of
-   this representation.
-
-   The information is derived from all of the mailcap files found on the system.
-   Settings in the user's mailcap file :file:`$HOME/.mailcap` will override
-   settings in the system mailcap files :file:`/etc/mailcap`,
-   :file:`/usr/etc/mailcap`, and :file:`/usr/local/etc/mailcap`.
-
-An example usage::
-
-   >>> import mailcap
-   >>> d = mailcap.getcaps()
-   >>> mailcap.findmatch(d, 'video/mpeg', filename='tmp1223')
-   ('xmpeg tmp1223', {'view': 'xmpeg %s'})
-
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 797f32408eac3d..9caf7230eed0aa 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -71,8 +71,8 @@ Number-theoretic and representation functions
    Return *n* factorial as an integer.  Raises :exc:`ValueError` if *n* is not integral or
    is negative.
 
-   .. deprecated:: 3.9
-      Accepting floats with integral values (like ``5.0``) is deprecated.
+   .. versionchanged:: 3.10
+      Floats with integral values (like ``5.0``) are no longer accepted.
 
 
 .. function:: floor(x)
@@ -224,11 +224,11 @@ Number-theoretic and representation functions
    of *x* and are floats.
 
 
-.. function:: nextafter(x, y)
+.. function:: nextafter(x, y, steps=1)
 
-   Return the next floating-point value after *x* towards *y*.
+   Return the floating-point value *steps* steps after *x* towards *y*.
 
-   If *x* is equal to *y*, return *y*.
+   If *x* is equal to *y*, return *y*, unless *steps* is zero.
 
    Examples:
 
@@ -239,6 +239,9 @@ Number-theoretic and representation functions
 
    See also :func:`math.ulp`.
 
+   .. versionchanged:: 3.12
+      Added the *steps* argument.
+
    .. versionadded:: 3.9
 
 .. function:: perm(n, k=None)
diff --git a/Doc/library/mmap.rst b/Doc/library/mmap.rst
index 69afadff1f5f42..3fa69e717329e4 100644
--- a/Doc/library/mmap.rst
+++ b/Doc/library/mmap.rst
@@ -19,7 +19,7 @@ the current file position, and :meth:`seek` through the file to different positi
 A memory-mapped file is created by the :class:`~mmap.mmap` constructor, which is
 different on Unix and on Windows.  In either case you must provide a file
 descriptor for a file opened for update. If you wish to map an existing Python
-file object, use its :meth:`fileno` method to obtain the correct value for the
+file object, use its :meth:`~io.IOBase.fileno` method to obtain the correct value for the
 *fileno* parameter.  Otherwise, you can open the file using the
 :func:`os.open` function, which returns a file descriptor directly (the file
 still needs to be closed when done).
@@ -285,6 +285,14 @@ To map anonymous memory, -1 should be passed as the fileno along with the length
       values are ``os.SEEK_CUR`` or ``1`` (seek relative to the current
       position) and ``os.SEEK_END`` or ``2`` (seek relative to the file's end).
 
+      .. versionchanged:: 3.13
+         Return the new absolute position instead of ``None``.
+
+   .. method:: seekable()
+
+      Return whether the file supports seeking, and the return value is always ``True``.
+
+      .. versionadded:: 3.13
 
    .. method:: size()
 
diff --git a/Doc/library/msilib.rst b/Doc/library/msilib.rst
deleted file mode 100644
index fbe55db9372300..00000000000000
--- a/Doc/library/msilib.rst
+++ /dev/null
@@ -1,565 +0,0 @@
-:mod:`msilib` --- Read and write Microsoft Installer files
-==========================================================
-
-.. module:: msilib
-   :platform: Windows
-   :synopsis: Creation of Microsoft Installer files, and CAB files.
-   :deprecated:
-
-.. moduleauthor:: Martin v. Löwis <martin@v.loewis.de>
-.. sectionauthor:: Martin v. Löwis <martin@v.loewis.de>
-
-**Source code:** :source:`Lib/msilib/__init__.py`
-
-.. index:: single: msi
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`msilib` module is deprecated
-   (see :pep:`PEP 594 <594#msilib>` for details).
-
---------------
-
-The :mod:`msilib` supports the creation of Microsoft Installer (``.msi``) files.
-Because these files often contain an embedded "cabinet" file (``.cab``), it also
-exposes an API to create CAB files. Support for reading ``.cab`` files is
-currently not implemented; read support for the ``.msi`` database is possible.
-
-This package aims to provide complete access to all tables in an ``.msi`` file,
-therefore, it is a fairly low-level API. One primary application of this
-package is the creation of Python installer package itself (although that currently
-uses a different version of ``msilib``).
-
-The package contents can be roughly split into four parts: low-level CAB
-routines, low-level MSI routines, higher-level MSI routines, and standard table
-structures.
-
-
-.. function:: FCICreate(cabname, files)
-
-   Create a new CAB file named *cabname*. *files* must be a list of tuples, each
-   containing the name of the file on disk, and the name of the file inside the CAB
-   file.
-
-   The files are added to the CAB file in the order they appear in the list. All
-   files are added into a single CAB file, using the MSZIP compression algorithm.
-
-   Callbacks to Python for the various steps of MSI creation are currently not
-   exposed.
-
-
-.. function:: UuidCreate()
-
-   Return the string representation of a new unique identifier. This wraps the
-   Windows API functions :c:func:`UuidCreate` and :c:func:`UuidToString`.
-
-
-.. function:: OpenDatabase(path, persist)
-
-   Return a new database object by calling MsiOpenDatabase.   *path* is the file
-   name of the MSI file; *persist* can be one of the constants
-   ``MSIDBOPEN_CREATEDIRECT``, ``MSIDBOPEN_CREATE``, ``MSIDBOPEN_DIRECT``,
-   ``MSIDBOPEN_READONLY``, or ``MSIDBOPEN_TRANSACT``, and may include the flag
-   ``MSIDBOPEN_PATCHFILE``. See the Microsoft documentation for the meaning of
-   these flags; depending on the flags, an existing database is opened, or a new
-   one created.
-
-
-.. function:: CreateRecord(count)
-
-   Return a new record object by calling :c:func:`MSICreateRecord`. *count* is the
-   number of fields of the record.
-
-
-.. function:: init_database(name, schema, ProductName, ProductCode, ProductVersion, Manufacturer)
-
-   Create and return a new database *name*, initialize it with *schema*, and set
-   the properties *ProductName*, *ProductCode*, *ProductVersion*, and
-   *Manufacturer*.
-
-   *schema* must be a module object containing ``tables`` and
-   ``_Validation_records`` attributes; typically, :mod:`msilib.schema` should be
-   used.
-
-   The database will contain just the schema and the validation records when this
-   function returns.
-
-
-.. function:: add_data(database, table, records)
-
-   Add all *records* to the table named *table* in *database*.
-
-   The *table* argument must be one of the predefined tables in the MSI schema,
-   e.g. ``'Feature'``, ``'File'``, ``'Component'``, ``'Dialog'``, ``'Control'``,
-   etc.
-
-   *records* should be a list of tuples, each one containing all fields of a
-   record according to the schema of the table.  For optional fields,
-   ``None`` can be passed.
-
-   Field values can be ints, strings, or instances of the Binary class.
-
-
-.. class:: Binary(filename)
-
-   Represents entries in the Binary table; inserting such an object using
-   :func:`add_data` reads the file named *filename* into the table.
-
-
-.. function:: add_tables(database, module)
-
-   Add all table content from *module* to *database*. *module* must contain an
-   attribute *tables* listing all tables for which content should be added, and one
-   attribute per table that has the actual content.
-
-   This is typically used to install the sequence tables.
-
-
-.. function:: add_stream(database, name, path)
-
-   Add the file *path* into the ``_Stream`` table of *database*, with the stream
-   name *name*.
-
-
-.. function:: gen_uuid()
-
-   Return a new UUID, in the format that MSI typically requires (i.e. in curly
-   braces, and with all hexdigits in uppercase).
-
-
-.. seealso::
-
-   `FCICreate <https://msdn.microsoft.com/en-us/library/bb432265.aspx>`_
-   `UuidCreate <https://msdn.microsoft.com/en-us/library/windows/desktop/aa379205.aspx>`_
-   `UuidToString <https://msdn.microsoft.com/en-us/library/windows/desktop/aa379352.aspx>`_
-
-.. _database-objects:
-
-Database Objects
-----------------
-
-
-.. method:: Database.OpenView(sql)
-
-   Return a view object, by calling :c:func:`MSIDatabaseOpenView`. *sql* is the SQL
-   statement to execute.
-
-
-.. method:: Database.Commit()
-
-   Commit the changes pending in the current transaction, by calling
-   :c:func:`MSIDatabaseCommit`.
-
-
-.. method:: Database.GetSummaryInformation(count)
-
-   Return a new summary information object, by calling
-   :c:func:`MsiGetSummaryInformation`.  *count* is the maximum number of updated
-   values.
-
-.. method:: Database.Close()
-
-   Close the database object, through :c:func:`MsiCloseHandle`.
-
-   .. versionadded:: 3.7
-
-.. seealso::
-
-   `MSIDatabaseOpenView <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370082.aspx>`_
-   `MSIDatabaseCommit <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370075.aspx>`_
-   `MSIGetSummaryInformation <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370301.aspx>`_
-   `MsiCloseHandle <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370067.aspx>`_
-
-.. _view-objects:
-
-View Objects
-------------
-
-
-.. method:: View.Execute(params)
-
-   Execute the SQL query of the view, through :c:func:`MSIViewExecute`. If
-   *params* is not ``None``, it is a record describing actual values of the
-   parameter tokens in the query.
-
-
-.. method:: View.GetColumnInfo(kind)
-
-   Return a record describing the columns of the view, through calling
-   :c:func:`MsiViewGetColumnInfo`. *kind* can be either ``MSICOLINFO_NAMES`` or
-   ``MSICOLINFO_TYPES``.
-
-
-.. method:: View.Fetch()
-
-   Return a result record of the query, through calling :c:func:`MsiViewFetch`.
-
-
-.. method:: View.Modify(kind, data)
-
-   Modify the view, by calling :c:func:`MsiViewModify`. *kind* can be one of
-   ``MSIMODIFY_SEEK``, ``MSIMODIFY_REFRESH``, ``MSIMODIFY_INSERT``,
-   ``MSIMODIFY_UPDATE``, ``MSIMODIFY_ASSIGN``, ``MSIMODIFY_REPLACE``,
-   ``MSIMODIFY_MERGE``, ``MSIMODIFY_DELETE``, ``MSIMODIFY_INSERT_TEMPORARY``,
-   ``MSIMODIFY_VALIDATE``, ``MSIMODIFY_VALIDATE_NEW``,
-   ``MSIMODIFY_VALIDATE_FIELD``, or ``MSIMODIFY_VALIDATE_DELETE``.
-
-   *data* must be a record describing the new data.
-
-
-.. method:: View.Close()
-
-   Close the view, through :c:func:`MsiViewClose`.
-
-
-.. seealso::
-
-   `MsiViewExecute <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370513.aspx>`_
-   `MSIViewGetColumnInfo <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370516.aspx>`_
-   `MsiViewFetch <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370514.aspx>`_
-   `MsiViewModify <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370519.aspx>`_
-   `MsiViewClose <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370510.aspx>`_
-
-.. _summary-objects:
-
-Summary Information Objects
----------------------------
-
-
-.. method:: SummaryInformation.GetProperty(field)
-
-   Return a property of the summary, through :c:func:`MsiSummaryInfoGetProperty`.
-   *field* is the name of the property, and can be one of the constants
-   ``PID_CODEPAGE``, ``PID_TITLE``, ``PID_SUBJECT``, ``PID_AUTHOR``,
-   ``PID_KEYWORDS``, ``PID_COMMENTS``, ``PID_TEMPLATE``, ``PID_LASTAUTHOR``,
-   ``PID_REVNUMBER``, ``PID_LASTPRINTED``, ``PID_CREATE_DTM``,
-   ``PID_LASTSAVE_DTM``, ``PID_PAGECOUNT``, ``PID_WORDCOUNT``, ``PID_CHARCOUNT``,
-   ``PID_APPNAME``, or ``PID_SECURITY``.
-
-
-.. method:: SummaryInformation.GetPropertyCount()
-
-   Return the number of summary properties, through
-   :c:func:`MsiSummaryInfoGetPropertyCount`.
-
-
-.. method:: SummaryInformation.SetProperty(field, value)
-
-   Set a property through :c:func:`MsiSummaryInfoSetProperty`. *field* can have the
-   same values as in :meth:`GetProperty`, *value* is the new value of the property.
-   Possible value types are integer and string.
-
-
-.. method:: SummaryInformation.Persist()
-
-   Write the modified properties to the summary information stream, using
-   :c:func:`MsiSummaryInfoPersist`.
-
-
-.. seealso::
-
-   `MsiSummaryInfoGetProperty <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370409.aspx>`_
-   `MsiSummaryInfoGetPropertyCount <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370488.aspx>`_
-   `MsiSummaryInfoSetProperty <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370491.aspx>`_
-   `MsiSummaryInfoPersist <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370490.aspx>`_
-
-.. _record-objects:
-
-Record Objects
---------------
-
-
-.. method:: Record.GetFieldCount()
-
-   Return the number of fields of the record, through
-   :c:func:`MsiRecordGetFieldCount`.
-
-
-.. method:: Record.GetInteger(field)
-
-   Return the value of *field* as an integer where possible.  *field* must
-   be an integer.
-
-
-.. method:: Record.GetString(field)
-
-   Return the value of *field* as a string where possible.  *field* must
-   be an integer.
-
-
-.. method:: Record.SetString(field, value)
-
-   Set *field* to *value* through :c:func:`MsiRecordSetString`. *field* must be an
-   integer; *value* a string.
-
-
-.. method:: Record.SetStream(field, value)
-
-   Set *field* to the contents of the file named *value*, through
-   :c:func:`MsiRecordSetStream`. *field* must be an integer; *value* a string.
-
-
-.. method:: Record.SetInteger(field, value)
-
-   Set *field* to *value* through :c:func:`MsiRecordSetInteger`. Both *field* and
-   *value* must be an integer.
-
-
-.. method:: Record.ClearData()
-
-   Set all fields of the record to 0, through :c:func:`MsiRecordClearData`.
-
-
-.. seealso::
-
-   `MsiRecordGetFieldCount <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370366.aspx>`_
-   `MsiRecordSetString <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370373.aspx>`_
-   `MsiRecordSetStream <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370372.aspx>`_
-   `MsiRecordSetInteger <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370371.aspx>`_
-   `MsiRecordClearData <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370364.aspx>`_
-
-.. _msi-errors:
-
-Errors
-------
-
-All wrappers around MSI functions raise :exc:`MSIError`; the string inside the
-exception will contain more detail.
-
-
-.. _cab:
-
-CAB Objects
------------
-
-
-.. class:: CAB(name)
-
-   The class :class:`CAB` represents a CAB file. During MSI construction, files
-   will be added simultaneously to the ``Files`` table, and to a CAB file. Then,
-   when all files have been added, the CAB file can be written, then added to the
-   MSI file.
-
-   *name* is the name of the CAB file in the MSI file.
-
-
-   .. method:: append(full, file, logical)
-
-      Add the file with the pathname *full* to the CAB file, under the name
-      *logical*.  If there is already a file named *logical*, a new file name is
-      created.
-
-      Return the index of the file in the CAB file, and the new name of the file
-      inside the CAB file.
-
-
-   .. method:: commit(database)
-
-      Generate a CAB file, add it as a stream to the MSI file, put it into the
-      ``Media`` table, and remove the generated file from the disk.
-
-
-.. _msi-directory:
-
-Directory Objects
------------------
-
-
-.. class:: Directory(database, cab, basedir, physical,  logical, default, [componentflags])
-
-   Create a new directory in the Directory table. There is a current component at
-   each point in time for the directory, which is either explicitly created through
-   :meth:`start_component`, or implicitly when files are added for the first time.
-   Files are added into the current component, and into the cab file.  To create a
-   directory, a base directory object needs to be specified (can be ``None``), the
-   path to the physical directory, and a logical directory name.  *default*
-   specifies the DefaultDir slot in the directory table. *componentflags* specifies
-   the default flags that new components get.
-
-
-   .. method:: start_component(component=None, feature=None, flags=None, keyfile=None, uuid=None)
-
-      Add an entry to the Component table, and make this component the current
-      component for this directory. If no component name is given, the directory
-      name is used. If no *feature* is given, the current feature is used. If no
-      *flags* are given, the directory's default flags are used. If no *keyfile*
-      is given, the KeyPath is left null in the Component table.
-
-
-   .. method:: add_file(file, src=None, version=None, language=None)
-
-      Add a file to the current component of the directory, starting a new one
-      if there is no current component. By default, the file name in the source
-      and the file table will be identical. If the *src* file is specified, it
-      is interpreted relative to the current directory. Optionally, a *version*
-      and a *language* can be specified for the entry in the File table.
-
-
-   .. method:: glob(pattern, exclude=None)
-
-      Add a list of files to the current component as specified in the glob
-      pattern.  Individual files can be excluded in the *exclude* list.
-
-
-   .. method:: remove_pyc()
-
-      Remove ``.pyc`` files on uninstall.
-
-
-.. seealso::
-
-   `Directory Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368295.aspx>`_
-   `File Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368596.aspx>`_
-   `Component Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368007.aspx>`_
-   `FeatureComponents Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368579.aspx>`_
-
-.. _features:
-
-Features
---------
-
-
-.. class:: Feature(db, id, title, desc, display, level=1, parent=None, directory=None,  attributes=0)
-
-   Add a new record to the ``Feature`` table, using the values *id*, *parent.id*,
-   *title*, *desc*, *display*, *level*, *directory*, and *attributes*. The
-   resulting feature object can be passed to the :meth:`start_component` method of
-   :class:`Directory`.
-
-
-   .. method:: set_current()
-
-      Make this feature the current feature of :mod:`msilib`. New components are
-      automatically added to the default feature, unless a feature is explicitly
-      specified.
-
-
-.. seealso::
-
-   `Feature Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368585.aspx>`_
-
-.. _msi-gui:
-
-GUI classes
------------
-
-:mod:`msilib` provides several classes that wrap the GUI tables in an MSI
-database. However, no standard user interface is provided.
-
-
-.. class:: Control(dlg, name)
-
-   Base class of the dialog controls. *dlg* is the dialog object the control
-   belongs to, and *name* is the control's name.
-
-
-   .. method:: event(event, argument, condition=1, ordering=None)
-
-      Make an entry into the ``ControlEvent`` table for this control.
-
-
-   .. method:: mapping(event, attribute)
-
-      Make an entry into the ``EventMapping`` table for this control.
-
-
-   .. method:: condition(action, condition)
-
-      Make an entry into the ``ControlCondition`` table for this control.
-
-
-.. class:: RadioButtonGroup(dlg, name, property)
-
-   Create a radio button control named *name*. *property* is the installer property
-   that gets set when a radio button is selected.
-
-
-   .. method:: add(name, x, y, width, height, text, value=None)
-
-      Add a radio button named *name* to the group, at the coordinates *x*, *y*,
-      *width*, *height*, and with the label *text*. If *value* is ``None``, it
-      defaults to *name*.
-
-
-.. class:: Dialog(db, name, x, y, w, h, attr, title, first,  default, cancel)
-
-   Return a new :class:`Dialog` object. An entry in the ``Dialog`` table is made,
-   with the specified coordinates, dialog attributes, title, name of the first,
-   default, and cancel controls.
-
-
-   .. method:: control(name, type, x, y, width, height,  attributes, property, text, control_next, help)
-
-      Return a new :class:`Control` object. An entry in the ``Control`` table is
-      made with the specified parameters.
-
-      This is a generic method; for specific types, specialized methods are
-      provided.
-
-
-   .. method:: text(name, x, y, width, height, attributes, text)
-
-      Add and return a ``Text`` control.
-
-
-   .. method:: bitmap(name, x, y, width, height, text)
-
-      Add and return a ``Bitmap`` control.
-
-
-   .. method:: line(name, x, y, width, height)
-
-      Add and return a ``Line`` control.
-
-
-   .. method:: pushbutton(name, x, y, width, height, attributes,  text, next_control)
-
-      Add and return a ``PushButton`` control.
-
-
-   .. method:: radiogroup(name, x, y, width, height,  attributes, property, text, next_control)
-
-      Add and return a ``RadioButtonGroup`` control.
-
-
-   .. method:: checkbox(name, x, y, width, height,  attributes, property, text, next_control)
-
-      Add and return a ``CheckBox`` control.
-
-
-.. seealso::
-
-   `Dialog Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368286.aspx>`_
-   `Control Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368044.aspx>`_
-   `Control Types <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368039.aspx>`_
-   `ControlCondition Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368035.aspx>`_
-   `ControlEvent Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368037.aspx>`_
-   `EventMapping Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa368559.aspx>`_
-   `RadioButton Table <https://msdn.microsoft.com/en-us/library/windows/desktop/aa370962.aspx>`_
-
-.. _msi-tables:
-
-Precomputed tables
-------------------
-
-:mod:`msilib` provides a few subpackages that contain only schema and table
-definitions. Currently, these definitions are based on MSI version 2.0.
-
-
-.. data:: schema
-
-   This is the standard MSI schema for MSI 2.0, with the *tables* variable
-   providing a list of table definitions, and *_Validation_records* providing the
-   data for MSI validation.
-
-
-.. data:: sequence
-
-   This module contains table contents for the standard sequence tables:
-   *AdminExecuteSequence*, *AdminUISequence*, *AdvtExecuteSequence*,
-   *InstallExecuteSequence*, and *InstallUISequence*.
-
-
-.. data:: text
-
-   This module contains definitions for the UIText and ActionText tables, for the
-   standard installer actions.
diff --git a/Doc/library/msvcrt.rst b/Doc/library/msvcrt.rst
index 42fffee6a0f449..0b059e746c61af 100644
--- a/Doc/library/msvcrt.rst
+++ b/Doc/library/msvcrt.rst
@@ -10,8 +10,8 @@
 --------------
 
 These functions provide access to some useful capabilities on Windows platforms.
-Some higher-level modules use these functions to build the  Windows
-implementations of their services.  For example, the :mod:`getpass` module uses
+Some higher-level modules use these functions to build the Windows
+implementations of their services. For example, the :mod:`getpass` module uses
 this in the implementation of the :func:`getpass` function.
 
 Further documentation on these functions can be found in the Platform API
@@ -35,11 +35,11 @@ File Operations
 
 .. function:: locking(fd, mode, nbytes)
 
-   Lock part of a file based on file descriptor *fd* from the C runtime.  Raises
-   :exc:`OSError` on failure.  The locked region of the file extends from the
+   Lock part of a file based on file descriptor *fd* from the C runtime. Raises
+   :exc:`OSError` on failure. The locked region of the file extends from the
    current file position for *nbytes* bytes, and may continue beyond the end of the
-   file.  *mode* must be one of the :const:`LK_\*` constants listed below. Multiple
-   regions in a file may be locked at the same time, but may not overlap.  Adjacent
+   file. *mode* must be one of the :const:`!LK_\*` constants listed below. Multiple
+   regions in a file may be locked at the same time, but may not overlap. Adjacent
    regions are not merged; they must be unlocked individually.
 
    .. audit-event:: msvcrt.locking fd,mode,nbytes msvcrt.locking
@@ -49,7 +49,7 @@ File Operations
           LK_RLCK
 
    Locks the specified bytes. If the bytes cannot be locked, the program
-   immediately tries again after 1 second.  If, after 10 attempts, the bytes cannot
+   immediately tries again after 1 second. If, after 10 attempts, the bytes cannot
    be locked, :exc:`OSError` is raised.
 
 
@@ -74,9 +74,9 @@ File Operations
 
 .. function:: open_osfhandle(handle, flags)
 
-   Create a C runtime file descriptor from the file handle *handle*.  The *flags*
+   Create a C runtime file descriptor from the file handle *handle*. The *flags*
    parameter should be a bitwise OR of :const:`os.O_APPEND`, :const:`os.O_RDONLY`,
-   and :const:`os.O_TEXT`.  The returned file descriptor may be used as a parameter
+   and :const:`os.O_TEXT`. The returned file descriptor may be used as a parameter
    to :func:`os.fdopen` to create a file object.
 
    .. audit-event:: msvcrt.open_osfhandle handle,flags msvcrt.open_osfhandle
@@ -84,7 +84,7 @@ File Operations
 
 .. function:: get_osfhandle(fd)
 
-   Return the file handle for the file descriptor *fd*.  Raises :exc:`OSError` if
+   Return the file handle for the file descriptor *fd*. Raises :exc:`OSError` if
    *fd* is not recognized.
 
    .. audit-event:: msvcrt.get_osfhandle fd msvcrt.get_osfhandle
@@ -98,13 +98,14 @@ Console I/O
 
 .. function:: kbhit()
 
-   Return ``True`` if a keypress is waiting to be read.
+   Returns a nonzero value if a keypress is waiting to be read. Otherwise,
+   return 0.
 
 
 .. function:: getch()
 
    Read a keypress and return the resulting character as a byte string.
-   Nothing is echoed to the console.  This call will block if a keypress
+   Nothing is echoed to the console. This call will block if a keypress
    is not already available, but will not wait for :kbd:`Enter` to be
    pressed. If the pressed key was a special function key, this will
    return ``'\000'`` or ``'\xe0'``; the next call will return the keycode.
@@ -118,7 +119,7 @@ Console I/O
 
 .. function:: getche()
 
-   Similar to :func:`getch`, but the keypress will be echoed if it  represents a
+   Similar to :func:`getch`, but the keypress will be echoed if it represents a
    printable character.
 
 
@@ -157,4 +158,93 @@ Other Functions
 .. function:: heapmin()
 
    Force the :c:func:`malloc` heap to clean itself up and return unused blocks to
-   the operating system.  On failure, this raises :exc:`OSError`.
+   the operating system. On failure, this raises :exc:`OSError`.
+
+
+.. function:: set_error_mode(mode)
+
+   Changes the location where the C runtime writes an error message for an error
+   that might end the program. *mode* must be one of the :const:`!OUT_\*`
+   constants listed below  or :const:`REPORT_ERRMODE`. Returns the old setting
+   or -1 if an error occurs. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. data:: OUT_TO_DEFAULT
+
+   Error sink is determined by the app's type. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. data:: OUT_TO_STDERR
+
+   Error sink is a standard error. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. data:: OUT_TO_MSGBOX
+
+   Error sink is a message box. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. data:: REPORT_ERRMODE
+
+   Report the current error mode value. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. function:: CrtSetReportMode(type, mode)
+
+   Specifies the destination or destinations for a specific report type
+   generated by :c:func:`!_CrtDbgReport` in the MS VC++ runtime. *type* must be
+   one of the :const:`!CRT_\*` constants listed below. *mode* must be one of the
+   :const:`!CRTDBG_\*` constants listed below. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. function:: CrtSetReportFile(type, file)
+
+   After you use :func:`CrtSetReportMode` to specify :const:`CRTDBG_MODE_FILE`,
+   you can specify the file handle to receive the message text. *type* must be
+   one of the :const:`!CRT_\*` constants listed below. *file* shuld be the file
+   handle your want specified. Only available in
+   :ref:`debug build of Python <debug-build>`.
+
+
+.. data:: CRT_WARN
+
+   Warnings, messages, and information that doesn't need immediate attention.
+
+
+.. data:: CRT_ERROR
+
+   Errors, unrecoverable problems, and issues that require immediate attention.
+
+
+.. data:: CRT_ASSERT
+
+   Assertion failures.
+
+
+.. data:: CRTDBG_MODE_DEBUG
+
+   Writes the message to the debugger's output window.
+
+
+.. data:: CRTDBG_MODE_FILE
+
+   Writes the message to a user-supplied file handle. :func:`CrtSetReportFile`
+   should be called to define the specific file or stream to use as
+   the destination.
+
+
+.. data:: CRTDBG_MODE_WNDW
+
+   Creates a message box to display the message along with the ``Abort``,
+   ``Retry``, and ``Ignore`` buttons.
+
+
+.. data:: CRTDBG_REPORT_MODE
+
+   Returns current *mode* for the specified *type*.
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index 8454296b815b41..789a84b02d59d2 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -131,6 +131,12 @@ to start a process.  These *start methods* are
        Code that requires *fork* should explicitly specify that via
        :func:`get_context` or :func:`set_start_method`.
 
+    .. versionchanged:: 3.12
+       If Python is able to detect that your process has multiple threads, the
+       :func:`os.fork` function that this start method calls internally will
+       raise a :exc:`DeprecationWarning`. Use a different start method.
+       See the :func:`os.fork` documentation for further explanation.
+
   *forkserver*
     When the program starts and selects the *forkserver* start method,
     a server process is spawned.  From then on, whenever a new process
@@ -990,13 +996,20 @@ Miscellaneous
 
    This number is not equivalent to the number of CPUs the current process can
    use.  The number of usable CPUs can be obtained with
-   ``len(os.sched_getaffinity(0))``
+   :func:`os.process_cpu_count` (or ``len(os.sched_getaffinity(0))``).
 
    When the number of CPUs cannot be determined a :exc:`NotImplementedError`
    is raised.
 
    .. seealso::
       :func:`os.cpu_count`
+      :func:`os.process_cpu_count`
+
+   .. versionchanged:: 3.13
+
+      The return value can also be overridden using the
+      :option:`-X cpu_count <-X>` flag or :envvar:`PYTHON_CPU_COUNT` as this is
+      merely a wrapper around the :mod:`os` cpu count APIs.
 
 .. function:: current_process()
 
@@ -2208,7 +2221,7 @@ with the :class:`Pool` class.
    callbacks and has a parallel map implementation.
 
    *processes* is the number of worker processes to use.  If *processes* is
-   ``None`` then the number returned by :func:`os.cpu_count` is used.
+   ``None`` then the number returned by :func:`os.process_cpu_count` is used.
 
    If *initializer* is not ``None`` then each worker process will call
    ``initializer(*initargs)`` when it starts.
@@ -2243,6 +2256,10 @@ with the :class:`Pool` class.
    .. versionadded:: 3.4
       *context*
 
+   .. versionchanged:: 3.13
+      *processes* uses :func:`os.process_cpu_count` by default, instead of
+      :func:`os.cpu_count`.
+
    .. note::
 
       Worker processes within a :class:`Pool` typically live for the complete
@@ -2565,7 +2582,7 @@ multiple connections at the same time.
    **Windows**: An item in *object_list* must either be an integer
    handle which is waitable (according to the definition used by the
    documentation of the Win32 function ``WaitForMultipleObjects()``)
-   or it can be an object with a :meth:`fileno` method which returns a
+   or it can be an object with a :meth:`~io.IOBase.fileno` method which returns a
    socket handle or pipe handle.  (Note that pipe handles and socket
    handles are **not** waitable handles.)
 
@@ -2613,7 +2630,6 @@ server::
 The following code uses :func:`~multiprocessing.connection.wait` to
 wait for messages from multiple processes at once::
 
-   import time, random
    from multiprocessing import Process, Pipe, current_process
    from multiprocessing.connection import wait
 
@@ -2707,7 +2723,7 @@ handler type) for messages from different processes to get mixed up.
    Returns the logger used by :mod:`multiprocessing`.  If necessary, a new one
    will be created.
 
-   When first created the logger has level :data:`logging.NOTSET` and no
+   When first created the logger has level :const:`logging.NOTSET` and no
    default handler. Messages sent to this logger will not by default propagate
    to the root logger.
 
@@ -2769,27 +2785,27 @@ worker threads rather than worker processes.
    :meth:`~multiprocessing.pool.Pool.terminate` manually.
 
    *processes* is the number of worker threads to use.  If *processes* is
-   ``None`` then the number returned by :func:`os.cpu_count` is used.
+   ``None`` then the number returned by :func:`os.process_cpu_count` is used.
 
    If *initializer* is not ``None`` then each worker process will call
    ``initializer(*initargs)`` when it starts.
 
    Unlike :class:`Pool`, *maxtasksperchild* and *context* cannot be provided.
 
-    .. note::
+   .. note::
 
-        A :class:`ThreadPool` shares the same interface as :class:`Pool`, which
-        is designed around a pool of processes and predates the introduction of
-        the :class:`concurrent.futures` module.  As such, it inherits some
-        operations that don't make sense for a pool backed by threads, and it
-        has its own type for representing the status of asynchronous jobs,
-        :class:`AsyncResult`, that is not understood by any other libraries.
+      A :class:`ThreadPool` shares the same interface as :class:`Pool`, which
+      is designed around a pool of processes and predates the introduction of
+      the :class:`concurrent.futures` module.  As such, it inherits some
+      operations that don't make sense for a pool backed by threads, and it
+      has its own type for representing the status of asynchronous jobs,
+      :class:`AsyncResult`, that is not understood by any other libraries.
 
-        Users should generally prefer to use
-        :class:`concurrent.futures.ThreadPoolExecutor`, which has a simpler
-        interface that was designed around threads from the start, and which
-        returns :class:`concurrent.futures.Future` instances that are
-        compatible with many other libraries, including :mod:`asyncio`.
+      Users should generally prefer to use
+      :class:`concurrent.futures.ThreadPoolExecutor`, which has a simpler
+      interface that was designed around threads from the start, and which
+      returns :class:`concurrent.futures.Future` instances that are
+      compatible with many other libraries, including :mod:`asyncio`.
 
 
 .. _multiprocessing-programming:
@@ -2988,7 +3004,7 @@ Global variables
 Safe importing of main module
 
     Make sure that the main module can be safely imported by a new Python
-    interpreter without causing unintended side effects (such a starting a new
+    interpreter without causing unintended side effects (such as starting a new
     process).
 
     For example, using the *spawn* or *forkserver* start method
diff --git a/Doc/library/multiprocessing.shared_memory.rst b/Doc/library/multiprocessing.shared_memory.rst
index 76046b34610abe..671130d9b29fc0 100644
--- a/Doc/library/multiprocessing.shared_memory.rst
+++ b/Doc/library/multiprocessing.shared_memory.rst
@@ -36,7 +36,7 @@ or other communications requiring the serialization/deserialization and
 copying of data.
 
 
-.. class:: SharedMemory(name=None, create=False, size=0)
+.. class:: SharedMemory(name=None, create=False, size=0, *, track=True)
 
    Creates a new shared memory block or attaches to an existing shared
    memory block.  Each shared memory block is assigned a unique name.
@@ -64,26 +64,45 @@ copying of data.
    memory block may be larger or equal to the size requested.  When attaching
    to an existing shared memory block, the ``size`` parameter is ignored.
 
+   *track*, when enabled, registers the shared memory block with a resource
+   tracker process on platforms where the OS does not do this automatically.
+   The resource tracker ensures proper cleanup of the shared memory even
+   if all other processes with access to the memory exit without doing so.
+   Python processes created from a common ancestor using :mod:`multiprocessing`
+   facilities share a single resource tracker process, and the lifetime of
+   shared memory segments is handled automatically among these processes.
+   Python processes created in any other way will receive their own
+   resource tracker when accessing shared memory with *track* enabled.
+   This will cause the shared memory to be deleted by the resource tracker
+   of the first process that terminates.
+   To avoid this issue, users of :mod:`subprocess` or standalone Python
+   processes should set *track* to ``False`` when there is already another
+   process in place that does the bookkeeping.
+   *track* is ignored on Windows, which has its own tracking and
+   automatically deletes shared memory when all handles to it have been closed.
+
+   .. versionchanged:: 3.13 Added *track* parameter.
+
    .. method:: close()
 
-      Closes access to the shared memory from this instance.  In order to
-      ensure proper cleanup of resources, all instances should call
-      ``close()`` once the instance is no longer needed.  Note that calling
-      ``close()`` does not cause the shared memory block itself to be
-      destroyed.
+      Closes the file descriptor/handle to the shared memory from this
+      instance.  :meth:`close()` should be called once access to the shared
+      memory block from this instance is no longer needed.  Depending
+      on operating system, the underlying memory may or may not be freed
+      even if all handles to it have been closed.  To ensure proper cleanup,
+      use the :meth:`unlink()` method.
 
    .. method:: unlink()
 
-      Requests that the underlying shared memory block be destroyed.  In
-      order to ensure proper cleanup of resources, ``unlink()`` should be
-      called once (and only once) across all processes which have need
-      for the shared memory block.  After requesting its destruction, a
-      shared memory block may or may not be immediately destroyed and
-      this behavior may differ across platforms.  Attempts to access data
-      inside the shared memory block after ``unlink()`` has been called may
-      result in memory access errors.  Note: the last process relinquishing
-      its hold on a shared memory block may call ``unlink()`` and
-      :meth:`close()` in either order.
+      Deletes the underlying shared memory block.  This should be called only
+      once per shared memory block regardless of the number of handles to it,
+      even in other processes.
+      :meth:`unlink()` and :meth:`close()` can be called in any order, but
+      trying to access data inside a shared memory block after :meth:`unlink()`
+      may result in memory access errors, depending on platform.
+
+      This method has no effect on Windows, where the only way to delete a
+      shared memory block is to close all handles.
 
    .. attribute:: buf
 
@@ -255,16 +274,17 @@ shared memory blocks created using that manager are all released when the
 :keyword:`with` statement's code block finishes execution.
 
 
-.. class:: ShareableList(sequence=None, *, name=None)
+.. class:: ShareableList(sequence=None, \*, name=None)
 
    Provides a mutable list-like object where all values stored within are
    stored in a shared memory block.  This constrains storable values to
-   only the ``int``, ``float``, ``bool``, ``str`` (less than 10M bytes each),
-   ``bytes`` (less than 10M bytes each), and ``None`` built-in data types.
-   It also notably differs from the built-in ``list`` type in that these
-   lists can not change their overall length (i.e. no append, insert, etc.)
-   and do not support the dynamic creation of new :class:`ShareableList`
-   instances via slicing.
+   only the ``int`` (signed 64-bit), ``float``, ``bool``, ``str`` (less
+   than 10M bytes each when encoded as utf-8), ``bytes`` (less than 10M
+   bytes each), and ``None`` built-in data types.  It also notably
+   differs from the built-in ``list`` type in that these lists can not
+   change their overall length (i.e. no append, insert, etc.) and do not
+   support the dynamic creation of new :class:`ShareableList` instances
+   via slicing.
 
    *sequence* is used in populating a new ``ShareableList`` full of values.
    Set to ``None`` to instead attach to an already existing
@@ -275,6 +295,35 @@ shared memory blocks created using that manager are all released when the
    existing ``ShareableList``, specify its shared memory block's unique
    name while leaving ``sequence`` set to ``None``.
 
+   .. note::
+
+      A known issue exists for :class:`bytes` and :class:`str` values.
+      If they end with ``\x00`` nul bytes or characters, those may be
+      *silently stripped* when fetching them by index from the
+      :class:`ShareableList`. This ``.rstrip(b'\x00')`` behavior is
+      considered a bug and may go away in the future. See :gh:`106939`.
+
+   For applications where rstripping of trailing nulls is a problem,
+   work around it by always unconditionally appending an extra non-0
+   byte to the end of such values when storing and unconditionally
+   removing it when fetching:
+
+   .. doctest::
+
+       >>> from multiprocessing import shared_memory
+       >>> nul_bug_demo = shared_memory.ShareableList(['?\x00', b'\x03\x02\x01\x00\x00\x00'])
+       >>> nul_bug_demo[0]
+       '?'
+       >>> nul_bug_demo[1]
+       b'\x03\x02\x01'
+       >>> nul_bug_demo.shm.unlink()
+       >>> padded = shared_memory.ShareableList(['?\x00\x07', b'\x03\x02\x01\x00\x00\x00\x07'])
+       >>> padded[0][:-1]
+       '?\x00'
+       >>> padded[1][:-1]
+       b'\x03\x02\x01\x00\x00\x00'
+       >>> padded.shm.unlink()
+
    .. method:: count(value)
 
       Returns the number of occurrences of ``value``.
diff --git a/Doc/library/netrc.rst b/Doc/library/netrc.rst
index 88265d9b9e9e93..c36e5cfecfc6a8 100644
--- a/Doc/library/netrc.rst
+++ b/Doc/library/netrc.rst
@@ -51,9 +51,19 @@ the Unix :program:`ftp` program and other FTP clients.
 
    Exception raised by the :class:`~netrc.netrc` class when syntactical errors are
    encountered in source text.  Instances of this exception provide three
-   interesting attributes:  :attr:`msg` is a textual explanation of the error,
-   :attr:`filename` is the name of the source file, and :attr:`lineno` gives the
-   line number on which the error was found.
+   interesting attributes:
+
+   .. attribute:: msg
+
+      Textual explanation of the error.
+
+   .. attribute:: filename
+
+      The name of the source file.
+
+   .. attribute:: lineno
+
+      The line number on which the error was found.
 
 
 .. _netrc-objects:
diff --git a/Doc/library/nis.rst b/Doc/library/nis.rst
deleted file mode 100644
index 3fa7916c37b6a5..00000000000000
--- a/Doc/library/nis.rst
+++ /dev/null
@@ -1,72 +0,0 @@
-
-:mod:`nis` --- Interface to Sun's NIS (Yellow Pages)
-====================================================
-
-.. module:: nis
-   :platform: Unix
-   :synopsis: Interface to Sun's NIS (Yellow Pages) library.
-   :deprecated:
-
-.. moduleauthor:: Fred Gansevles <Fred.Gansevles@cs.utwente.nl>
-.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`nis` module is deprecated
-   (see :pep:`PEP 594 <594#nis>` for details).
-
---------------
-
-The :mod:`nis` module gives a thin wrapper around the NIS library, useful for
-central administration of several hosts.
-
-Because NIS exists only on Unix systems, this module is only available for Unix.
-
-.. include:: ../includes/wasm-notavail.rst
-
-The :mod:`nis` module defines the following functions:
-
-
-.. function:: match(key, mapname, domain=default_domain)
-
-   Return the match for *key* in map *mapname*, or raise an error
-   (:exc:`nis.error`) if there is none. Both should be strings, *key* is 8-bit
-   clean. Return value is an arbitrary array of bytes (may contain ``NULL`` and
-   other joys).
-
-   Note that *mapname* is first checked if it is an alias to another name.
-
-   The *domain* argument allows overriding the NIS domain used for the lookup. If
-   unspecified, lookup is in the default NIS domain.
-
-
-.. function:: cat(mapname, domain=default_domain)
-
-   Return a dictionary mapping *key* to *value* such that ``match(key,
-   mapname)==value``. Note that both keys and values of the dictionary are
-   arbitrary arrays of bytes.
-
-   Note that *mapname* is first checked if it is an alias to another name.
-
-   The *domain* argument allows overriding the NIS domain used for the lookup. If
-   unspecified, lookup is in the default NIS domain.
-
-
-.. function:: maps(domain=default_domain)
-
-   Return a list of all valid maps.
-
-   The *domain* argument allows overriding the NIS domain used for the lookup. If
-   unspecified, lookup is in the default NIS domain.
-
-
-.. function:: get_default_domain()
-
-   Return the system default NIS domain.
-
-
-The :mod:`nis` module defines the following exception:
-
-.. exception:: error
-
-   An error raised when a NIS function returns an error code.
-
diff --git a/Doc/library/nntplib.rst b/Doc/library/nntplib.rst
deleted file mode 100644
index 143e4e0c427f9a..00000000000000
--- a/Doc/library/nntplib.rst
+++ /dev/null
@@ -1,586 +0,0 @@
-:mod:`nntplib` --- NNTP protocol client
-=======================================
-
-.. module:: nntplib
-   :synopsis: NNTP protocol client (requires sockets).
-   :deprecated:
-
-**Source code:** :source:`Lib/nntplib.py`
-
-.. index::
-   pair: NNTP; protocol
-   single: Network News Transfer Protocol
-
-.. deprecated:: 3.11
-   The :mod:`nntplib` module is deprecated (see :pep:`594` for details).
-
-.. testsetup::
-
-   import warnings
-   with warnings.catch_warnings():
-       warnings.simplefilter('ignore', category=DeprecationWarning)
-       import nntplib
-
-.. testcleanup::
-
-   try:
-       s.quit()
-   except NameError:
-       pass
-   import sys
-   # Force a warning if any other file imports nntplib
-   sys.modules.pop('nntplib')
-
---------------
-
-This module defines the class :class:`NNTP` which implements the client side of
-the Network News Transfer Protocol.  It can be used to implement a news reader
-or poster, or automated news processors.  It is compatible with :rfc:`3977`
-as well as the older :rfc:`977` and :rfc:`2980`.
-
-.. include:: ../includes/wasm-notavail.rst
-
-Here are two small examples of how it can be used.  To list some statistics
-about a newsgroup and print the subjects of the last 10 articles::
-
-   >>> s = nntplib.NNTP('news.gmane.io')
-   >>> resp, count, first, last, name = s.group('gmane.comp.python.committers')
-   >>> print('Group', name, 'has', count, 'articles, range', first, 'to', last)
-   Group gmane.comp.python.committers has 1096 articles, range 1 to 1096
-   >>> resp, overviews = s.over((last - 9, last))
-   >>> for id, over in overviews:
-   ...     print(id, nntplib.decode_header(over['subject']))
-   ...
-   1087 Re: Commit privileges for �ukasz Langa
-   1088 Re: 3.2 alpha 2 freeze
-   1089 Re: 3.2 alpha 2 freeze
-   1090 Re: Commit privileges for �ukasz Langa
-   1091 Re: Commit privileges for �ukasz Langa
-   1092 Updated ssh key
-   1093 Re: Updated ssh key
-   1094 Re: Updated ssh key
-   1095 Hello fellow committers!
-   1096 Re: Hello fellow committers!
-   >>> s.quit()
-   '205 Bye!'
-
-To post an article from a binary file (this assumes that the article has valid
-headers, and that you have right to post on the particular newsgroup)::
-
-   >>> s = nntplib.NNTP('news.gmane.io')
-   >>> f = open('article.txt', 'rb')
-   >>> s.post(f)
-   '240 Article posted successfully.'
-   >>> s.quit()
-   '205 Bye!'
-
-The module itself defines the following classes:
-
-
-.. class:: NNTP(host, port=119, user=None, password=None, readermode=None, usenetrc=False, [timeout])
-
-   Return a new :class:`NNTP` object, representing a connection
-   to the NNTP server running on host *host*, listening at port *port*.
-   An optional *timeout* can be specified for the socket connection.
-   If the optional *user* and *password* are provided, or if suitable
-   credentials are present in :file:`/.netrc` and the optional flag *usenetrc*
-   is true, the ``AUTHINFO USER`` and ``AUTHINFO PASS`` commands are used
-   to identify and authenticate the user to the server.  If the optional
-   flag *readermode* is true, then a ``mode reader`` command is sent before
-   authentication is performed.  Reader mode is sometimes necessary if you are
-   connecting to an NNTP server on the local machine and intend to call
-   reader-specific commands, such as ``group``.  If you get unexpected
-   :exc:`NNTPPermanentError`\ s, you might need to set *readermode*.
-   The :class:`NNTP` class supports the :keyword:`with` statement to
-   unconditionally consume :exc:`OSError` exceptions and to close the NNTP
-   connection when done, e.g.:
-
-    >>> from nntplib import NNTP
-    >>> with NNTP('news.gmane.io') as n:
-    ...     n.group('gmane.comp.python.committers')
-    ... # doctest: +SKIP
-    ('211 1755 1 1755 gmane.comp.python.committers', 1755, 1, 1755, 'gmane.comp.python.committers')
-    >>>
-
-   .. audit-event:: nntplib.connect self,host,port nntplib.NNTP
-
-   .. audit-event:: nntplib.putline self,line nntplib.NNTP
-
-      All commands will raise an :ref:`auditing event <auditing>`
-      ``nntplib.putline`` with arguments ``self`` and ``line``,
-      where ``line`` is the bytes about to be sent to the remote host.
-
-   .. versionchanged:: 3.2
-      *usenetrc* is now ``False`` by default.
-
-   .. versionchanged:: 3.3
-      Support for the :keyword:`with` statement was added.
-
-   .. versionchanged:: 3.9
-      If the *timeout* parameter is set to be zero, it will raise a
-      :class:`ValueError` to prevent the creation of a non-blocking socket.
-
-.. class:: NNTP_SSL(host, port=563, user=None, password=None, ssl_context=None, readermode=None, usenetrc=False, [timeout])
-
-   Return a new :class:`NNTP_SSL` object, representing an encrypted
-   connection to the NNTP server running on host *host*, listening at
-   port *port*.  :class:`NNTP_SSL` objects have the same methods as
-   :class:`NNTP` objects.  If *port* is omitted, port 563 (NNTPS) is used.
-   *ssl_context* is also optional, and is a :class:`~ssl.SSLContext` object.
-   Please read :ref:`ssl-security` for best practices.
-   All other parameters behave the same as for :class:`NNTP`.
-
-   Note that SSL-on-563 is discouraged per :rfc:`4642`, in favor of
-   STARTTLS as described below.  However, some servers only support the
-   former.
-
-   .. audit-event:: nntplib.connect self,host,port nntplib.NNTP_SSL
-
-   .. audit-event:: nntplib.putline self,line nntplib.NNTP_SSL
-
-      All commands will raise an :ref:`auditing event <auditing>`
-      ``nntplib.putline`` with arguments ``self`` and ``line``,
-      where ``line`` is the bytes about to be sent to the remote host.
-
-   .. versionadded:: 3.2
-
-   .. versionchanged:: 3.4
-      The class now supports hostname check with
-      :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
-
-   .. versionchanged:: 3.9
-      If the *timeout* parameter is set to be zero, it will raise a
-      :class:`ValueError` to prevent the creation of a non-blocking socket.
-
-.. exception:: NNTPError
-
-   Derived from the standard exception :exc:`Exception`, this is the base
-   class for all exceptions raised by the :mod:`nntplib` module.  Instances
-   of this class have the following attribute:
-
-   .. attribute:: response
-
-      The response of the server if available, as a :class:`str` object.
-
-
-.. exception:: NNTPReplyError
-
-   Exception raised when an unexpected reply is received from the server.
-
-
-.. exception:: NNTPTemporaryError
-
-   Exception raised when a response code in the range 400--499 is received.
-
-
-.. exception:: NNTPPermanentError
-
-   Exception raised when a response code in the range 500--599 is received.
-
-
-.. exception:: NNTPProtocolError
-
-   Exception raised when a reply is received from the server that does not begin
-   with a digit in the range 1--5.
-
-
-.. exception:: NNTPDataError
-
-   Exception raised when there is some error in the response data.
-
-
-.. _nntp-objects:
-
-NNTP Objects
-------------
-
-When connected, :class:`NNTP` and :class:`NNTP_SSL` objects support the
-following methods and attributes.
-
-Attributes
-^^^^^^^^^^
-
-.. attribute:: NNTP.nntp_version
-
-   An integer representing the version of the NNTP protocol supported by the
-   server.  In practice, this should be ``2`` for servers advertising
-   :rfc:`3977` compliance and ``1`` for others.
-
-   .. versionadded:: 3.2
-
-.. attribute:: NNTP.nntp_implementation
-
-   A string describing the software name and version of the NNTP server,
-   or :const:`None` if not advertised by the server.
-
-   .. versionadded:: 3.2
-
-Methods
-^^^^^^^
-
-The *response* that is returned as the first item in the return tuple of almost
-all methods is the server's response: a string beginning with a three-digit
-code.  If the server's response indicates an error, the method raises one of
-the above exceptions.
-
-Many of the following methods take an optional keyword-only argument *file*.
-When the *file* argument is supplied, it must be either a :term:`file object`
-opened for binary writing, or the name of an on-disk file to be written to.
-The method will then write any data returned by the server (except for the
-response line and the terminating dot) to the file; any list of lines,
-tuples or objects that the method normally returns will be empty.
-
-.. versionchanged:: 3.2
-   Many of the following methods have been reworked and fixed, which makes
-   them incompatible with their 3.1 counterparts.
-
-
-.. method:: NNTP.quit()
-
-   Send a ``QUIT`` command and close the connection.  Once this method has been
-   called, no other methods of the NNTP object should be called.
-
-
-.. method:: NNTP.getwelcome()
-
-   Return the welcome message sent by the server in reply to the initial
-   connection.  (This message sometimes contains disclaimers or help information
-   that may be relevant to the user.)
-
-
-.. method:: NNTP.getcapabilities()
-
-   Return the :rfc:`3977` capabilities advertised by the server, as a
-   :class:`dict` instance mapping capability names to (possibly empty) lists
-   of values. On legacy servers which don't understand the ``CAPABILITIES``
-   command, an empty dictionary is returned instead.
-
-      >>> s = NNTP('news.gmane.io')
-      >>> 'POST' in s.getcapabilities()
-      True
-
-   .. versionadded:: 3.2
-
-
-.. method:: NNTP.login(user=None, password=None, usenetrc=True)
-
-   Send ``AUTHINFO`` commands with the user name and password.  If *user*
-   and *password* are ``None`` and *usenetrc* is true, credentials from
-   ``~/.netrc`` will be used if possible.
-
-   Unless intentionally delayed, login is normally performed during the
-   :class:`NNTP` object initialization and separately calling this function
-   is unnecessary.  To force authentication to be delayed, you must not set
-   *user* or *password* when creating the object, and must set *usenetrc* to
-   False.
-
-   .. versionadded:: 3.2
-
-
-.. method:: NNTP.starttls(context=None)
-
-   Send a ``STARTTLS`` command.  This will enable encryption on the NNTP
-   connection.  The *context* argument is optional and should be a
-   :class:`ssl.SSLContext` object.  Please read :ref:`ssl-security` for best
-   practices.
-
-   Note that this may not be done after authentication information has
-   been transmitted, and authentication occurs by default if possible during a
-   :class:`NNTP` object initialization.  See :meth:`NNTP.login` for information
-   on suppressing this behavior.
-
-   .. versionadded:: 3.2
-
-   .. versionchanged:: 3.4
-      The method now supports hostname check with
-      :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
-
-.. method:: NNTP.newgroups(date, *, file=None)
-
-   Send a ``NEWGROUPS`` command.  The *date* argument should be a
-   :class:`datetime.date` or :class:`datetime.datetime` object.
-   Return a pair ``(response, groups)`` where *groups* is a list representing
-   the groups that are new since the given *date*. If *file* is supplied,
-   though, then *groups* will be empty.
-
-      >>> from datetime import date, timedelta
-      >>> resp, groups = s.newgroups(date.today() - timedelta(days=3))
-      >>> len(groups) # doctest: +SKIP
-      85
-      >>> groups[0] # doctest: +SKIP
-      GroupInfo(group='gmane.network.tor.devel', last='4', first='1', flag='m')
-
-
-.. method:: NNTP.newnews(group, date, *, file=None)
-
-   Send a ``NEWNEWS`` command.  Here, *group* is a group name or ``'*'``, and
-   *date* has the same meaning as for :meth:`newgroups`.  Return a pair
-   ``(response, articles)`` where *articles* is a list of message ids.
-
-   This command is frequently disabled by NNTP server administrators.
-
-
-.. method:: NNTP.list(group_pattern=None, *, file=None)
-
-   Send a ``LIST`` or ``LIST ACTIVE`` command.  Return a pair
-   ``(response, list)`` where *list* is a list of tuples representing all
-   the groups available from this NNTP server, optionally matching the
-   pattern string *group_pattern*.  Each tuple has the form
-   ``(group, last, first, flag)``, where *group* is a group name, *last*
-   and *first* are the last and first article numbers, and *flag* usually
-   takes one of these values:
-
-   * ``y``: Local postings and articles from peers are allowed.
-   * ``m``: The group is moderated and all postings must be approved.
-   * ``n``: No local postings are allowed, only articles from peers.
-   * ``j``: Articles from peers are filed in the junk group instead.
-   * ``x``: No local postings, and articles from peers are ignored.
-   * ``=foo.bar``: Articles are filed in the ``foo.bar`` group instead.
-
-   If *flag* has another value, then the status of the newsgroup should be
-   considered unknown.
-
-   This command can return very large results, especially if *group_pattern*
-   is not specified.  It is best to cache the results offline unless you
-   really need to refresh them.
-
-   .. versionchanged:: 3.2
-      *group_pattern* was added.
-
-
-.. method:: NNTP.descriptions(grouppattern)
-
-   Send a ``LIST NEWSGROUPS`` command, where *grouppattern* is a wildmat string as
-   specified in :rfc:`3977` (it's essentially the same as DOS or UNIX shell wildcard
-   strings).  Return a pair ``(response, descriptions)``, where *descriptions*
-   is a dictionary mapping group names to textual descriptions.
-
-      >>> resp, descs = s.descriptions('gmane.comp.python.*')
-      >>> len(descs) # doctest: +SKIP
-      295
-      >>> descs.popitem() # doctest: +SKIP
-      ('gmane.comp.python.bio.general', 'BioPython discussion list (Moderated)')
-
-
-.. method:: NNTP.description(group)
-
-   Get a description for a single group *group*.  If more than one group matches
-   (if 'group' is a real wildmat string), return the first match.   If no group
-   matches, return an empty string.
-
-   This elides the response code from the server.  If the response code is needed,
-   use :meth:`descriptions`.
-
-
-.. method:: NNTP.group(name)
-
-   Send a ``GROUP`` command, where *name* is the group name.  The group is
-   selected as the current group, if it exists.  Return a tuple
-   ``(response, count, first, last, name)`` where *count* is the (estimated)
-   number of articles in the group, *first* is the first article number in
-   the group, *last* is the last article number in the group, and *name*
-   is the group name.
-
-
-.. method:: NNTP.over(message_spec, *, file=None)
-
-   Send an ``OVER`` command, or an ``XOVER`` command on legacy servers.
-   *message_spec* can be either a string representing a message id, or
-   a ``(first, last)`` tuple of numbers indicating a range of articles in
-   the current group, or a ``(first, None)`` tuple indicating a range of
-   articles starting from *first* to the last article in the current group,
-   or :const:`None` to select the current article in the current group.
-
-   Return a pair ``(response, overviews)``.  *overviews* is a list of
-   ``(article_number, overview)`` tuples, one for each article selected
-   by *message_spec*.  Each *overview* is a dictionary with the same number
-   of items, but this number depends on the server.  These items are either
-   message headers (the key is then the lower-cased header name) or metadata
-   items (the key is then the metadata name prepended with ``":"``).  The
-   following items are guaranteed to be present by the NNTP specification:
-
-   * the ``subject``, ``from``, ``date``, ``message-id`` and ``references``
-     headers
-   * the ``:bytes`` metadata: the number of bytes in the entire raw article
-     (including headers and body)
-   * the ``:lines`` metadata: the number of lines in the article body
-
-   The value of each item is either a string, or :const:`None` if not present.
-
-   It is advisable to use the :func:`decode_header` function on header
-   values when they may contain non-ASCII characters::
-
-      >>> _, _, first, last, _ = s.group('gmane.comp.python.devel')
-      >>> resp, overviews = s.over((last, last))
-      >>> art_num, over = overviews[0]
-      >>> art_num
-      117216
-      >>> list(over.keys())
-      ['xref', 'from', ':lines', ':bytes', 'references', 'date', 'message-id', 'subject']
-      >>> over['from']
-      '=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?= <martin@v.loewis.de>'
-      >>> nntplib.decode_header(over['from'])
-      '"Martin v. Löwis" <martin@v.loewis.de>'
-
-   .. versionadded:: 3.2
-
-
-.. method:: NNTP.help(*, file=None)
-
-   Send a ``HELP`` command.  Return a pair ``(response, list)`` where *list* is a
-   list of help strings.
-
-
-.. method:: NNTP.stat(message_spec=None)
-
-   Send a ``STAT`` command, where *message_spec* is either a message id
-   (enclosed in ``'<'`` and ``'>'``) or an article number in the current group.
-   If *message_spec* is omitted or :const:`None`, the current article in the
-   current group is considered.  Return a triple ``(response, number, id)``
-   where *number* is the article number and *id* is the message id.
-
-      >>> _, _, first, last, _ = s.group('gmane.comp.python.devel')
-      >>> resp, number, message_id = s.stat(first)
-      >>> number, message_id
-      (9099, '<20030112190404.GE29873@epoch.metaslash.com>')
-
-
-.. method:: NNTP.next()
-
-   Send a ``NEXT`` command.  Return as for :meth:`.stat`.
-
-
-.. method:: NNTP.last()
-
-   Send a ``LAST`` command.  Return as for :meth:`.stat`.
-
-
-.. method:: NNTP.article(message_spec=None, *, file=None)
-
-   Send an ``ARTICLE`` command, where *message_spec* has the same meaning as
-   for :meth:`.stat`.  Return a tuple ``(response, info)`` where *info*
-   is a :class:`~collections.namedtuple` with three attributes *number*,
-   *message_id* and *lines* (in that order).  *number* is the article number
-   in the group (or 0 if the information is not available), *message_id* the
-   message id as a string, and *lines* a list of lines (without terminating
-   newlines) comprising the raw message including headers and body.
-
-      >>> resp, info = s.article('<20030112190404.GE29873@epoch.metaslash.com>')
-      >>> info.number
-      0
-      >>> info.message_id
-      '<20030112190404.GE29873@epoch.metaslash.com>'
-      >>> len(info.lines)
-      65
-      >>> info.lines[0]
-      b'Path: main.gmane.org!not-for-mail'
-      >>> info.lines[1]
-      b'From: Neal Norwitz <neal@metaslash.com>'
-      >>> info.lines[-3:]
-      [b'There is a patch for 2.3 as well as 2.2.', b'', b'Neal']
-
-
-.. method:: NNTP.head(message_spec=None, *, file=None)
-
-   Same as :meth:`article()`, but sends a ``HEAD`` command.  The *lines*
-   returned (or written to *file*) will only contain the message headers, not
-   the body.
-
-
-.. method:: NNTP.body(message_spec=None, *, file=None)
-
-   Same as :meth:`article()`, but sends a ``BODY`` command.  The *lines*
-   returned (or written to *file*) will only contain the message body, not the
-   headers.
-
-
-.. method:: NNTP.post(data)
-
-   Post an article using the ``POST`` command.  The *data* argument is either
-   a :term:`file object` opened for binary reading, or any iterable of bytes
-   objects (representing raw lines of the article to be posted).  It should
-   represent a well-formed news article, including the required headers.  The
-   :meth:`post` method automatically escapes lines beginning with ``.`` and
-   appends the termination line.
-
-   If the method succeeds, the server's response is returned.  If the server
-   refuses posting, a :class:`NNTPReplyError` is raised.
-
-
-.. method:: NNTP.ihave(message_id, data)
-
-   Send an ``IHAVE`` command. *message_id* is the id of the message to send
-   to the server (enclosed in  ``'<'`` and ``'>'``).  The *data* parameter
-   and the return value are the same as for :meth:`post()`.
-
-
-.. method:: NNTP.date()
-
-   Return a pair ``(response, date)``.  *date* is a :class:`~datetime.datetime`
-   object containing the current date and time of the server.
-
-
-.. method:: NNTP.slave()
-
-   Send a ``SLAVE`` command.  Return the server's *response*.
-
-
-.. method:: NNTP.set_debuglevel(level)
-
-   Set the instance's debugging level.  This controls the amount of debugging
-   output printed.  The default, ``0``, produces no debugging output.  A value of
-   ``1`` produces a moderate amount of debugging output, generally a single line
-   per request or response.  A value of ``2`` or higher produces the maximum amount
-   of debugging output, logging each line sent and received on the connection
-   (including message text).
-
-
-The following are optional NNTP extensions defined in :rfc:`2980`.  Some of
-them have been superseded by newer commands in :rfc:`3977`.
-
-
-.. method:: NNTP.xhdr(hdr, str, *, file=None)
-
-   Send an ``XHDR`` command.  The *hdr* argument is a header keyword, e.g.
-   ``'subject'``.  The *str* argument should have the form ``'first-last'``
-   where *first* and *last* are the first and last article numbers to search.
-   Return a pair ``(response, list)``, where *list* is a list of pairs ``(id,
-   text)``, where *id* is an article number (as a string) and *text* is the text of
-   the requested header for that article. If the *file* parameter is supplied, then
-   the output of the  ``XHDR`` command is stored in a file.  If *file* is a string,
-   then the method will open a file with that name, write to it  then close it.
-   If *file* is a :term:`file object`, then it will start calling :meth:`write` on
-   it to store the lines of the command output. If *file* is supplied, then the
-   returned *list* is an empty list.
-
-
-.. method:: NNTP.xover(start, end, *, file=None)
-
-   Send an ``XOVER`` command.  *start* and *end* are article numbers
-   delimiting the range of articles to select.  The return value is the
-   same of for :meth:`over()`.  It is recommended to use :meth:`over()`
-   instead, since it will automatically use the newer ``OVER`` command
-   if available.
-
-
-Utility functions
------------------
-
-The module also defines the following utility function:
-
-
-.. function:: decode_header(header_str)
-
-   Decode a header value, un-escaping any escaped non-ASCII characters.
-   *header_str* must be a :class:`str` object.  The unescaped value is
-   returned.  Using this function is recommended to display some headers
-   in a human readable form::
-
-      >>> decode_header("Some subject")
-      'Some subject'
-      >>> decode_header("=?ISO-8859-15?Q?D=E9buter_en_Python?=")
-      'Débuter en Python'
-      >>> decode_header("Re: =?UTF-8?B?cHJvYmzDqG1lIGRlIG1hdHJpY2U=?=")
-      'Re: problème de matrice'
diff --git a/Doc/library/numbers.rst b/Doc/library/numbers.rst
index b3dce151aee289..2a05b56db051f9 100644
--- a/Doc/library/numbers.rst
+++ b/Doc/library/numbers.rst
@@ -160,23 +160,23 @@ refer to ``MyIntegral`` and ``OtherTypeIKnowAbout`` as
 of :class:`Complex` (``a : A <: Complex``), and ``b : B <:
 Complex``. I'll consider ``a + b``:
 
-    1. If ``A`` defines an :meth:`__add__` which accepts ``b``, all is
-       well.
-    2. If ``A`` falls back to the boilerplate code, and it were to
-       return a value from :meth:`__add__`, we'd miss the possibility
-       that ``B`` defines a more intelligent :meth:`__radd__`, so the
-       boilerplate should return :const:`NotImplemented` from
-       :meth:`__add__`. (Or ``A`` may not implement :meth:`__add__` at
-       all.)
-    3. Then ``B``'s :meth:`__radd__` gets a chance. If it accepts
-       ``a``, all is well.
-    4. If it falls back to the boilerplate, there are no more possible
-       methods to try, so this is where the default implementation
-       should live.
-    5. If ``B <: A``, Python tries ``B.__radd__`` before
-       ``A.__add__``. This is ok, because it was implemented with
-       knowledge of ``A``, so it can handle those instances before
-       delegating to :class:`Complex`.
+1. If ``A`` defines an :meth:`__add__` which accepts ``b``, all is
+   well.
+2. If ``A`` falls back to the boilerplate code, and it were to
+   return a value from :meth:`__add__`, we'd miss the possibility
+   that ``B`` defines a more intelligent :meth:`__radd__`, so the
+   boilerplate should return :const:`NotImplemented` from
+   :meth:`__add__`. (Or ``A`` may not implement :meth:`__add__` at
+   all.)
+3. Then ``B``'s :meth:`__radd__` gets a chance. If it accepts
+   ``a``, all is well.
+4. If it falls back to the boilerplate, there are no more possible
+   methods to try, so this is where the default implementation
+   should live.
+5. If ``B <: A``, Python tries ``B.__radd__`` before
+   ``A.__add__``. This is ok, because it was implemented with
+   knowledge of ``A``, so it can handle those instances before
+   delegating to :class:`Complex`.
 
 If ``A <: Complex`` and ``B <: Real`` without sharing any other knowledge,
 then the appropriate shared operation is the one involving the built
diff --git a/Doc/library/operator.rst b/Doc/library/operator.rst
index 6d90473f2367b5..96f2c287875d41 100644
--- a/Doc/library/operator.rst
+++ b/Doc/library/operator.rst
@@ -59,9 +59,9 @@ truth tests, identity tests, and boolean operations:
               __not__(obj)
 
    Return the outcome of :keyword:`not` *obj*.  (Note that there is no
-   :meth:`__not__` method for object instances; only the interpreter core defines
-   this operation.  The result is affected by the :meth:`__bool__` and
-   :meth:`__len__` methods.)
+   :meth:`!__not__` method for object instances; only the interpreter core defines
+   this operation.  The result is affected by the :meth:`~object.__bool__` and
+   :meth:`~object.__len__` methods.)
 
 
 .. function:: truth(obj)
@@ -244,7 +244,7 @@ Operations which work with sequences (some of them with mappings too) include:
 
 .. function:: length_hint(obj, default=0)
 
-   Return an estimated length for the object *o*. First try to return its
+   Return an estimated length for the object *obj*. First try to return its
    actual length, then an estimate using :meth:`object.__length_hint__`, and
    finally return the default value.
 
@@ -306,7 +306,7 @@ expect a function argument.
               itemgetter(*items)
 
    Return a callable object that fetches *item* from its operand using the
-   operand's :meth:`__getitem__` method.  If multiple items are specified,
+   operand's :meth:`~object.__getitem__` method.  If multiple items are specified,
    returns a tuple of lookup values.  For example:
 
    * After ``f = itemgetter(2)``, the call ``f(r)`` returns ``r[2]``.
@@ -326,7 +326,7 @@ expect a function argument.
                   return tuple(obj[item] for item in items)
           return g
 
-   The items can be any type accepted by the operand's :meth:`__getitem__`
+   The items can be any type accepted by the operand's :meth:`~object.__getitem__`
    method.  Dictionaries accept any :term:`hashable` value.  Lists, tuples, and
    strings accept an index or a slice:
 
diff --git a/Doc/library/optparse.rst b/Doc/library/optparse.rst
index 5c02d8bc8835bf..015e83ed2ce5f7 100644
--- a/Doc/library/optparse.rst
+++ b/Doc/library/optparse.rst
@@ -11,8 +11,9 @@
 **Source code:** :source:`Lib/optparse.py`
 
 .. deprecated:: 3.2
-   The :mod:`optparse` module is deprecated and will not be developed further;
-   development will continue with the :mod:`argparse` module.
+   The :mod:`optparse` module is :term:`soft deprecated` and will not be
+   developed further; development will continue with the :mod:`argparse`
+   module.
 
 --------------
 
@@ -42,8 +43,8 @@ on the command-line, for example::
    <yourscript> --file=outfile -q
 
 As it parses the command line, :mod:`optparse` sets attributes of the
-``options`` object returned by :meth:`parse_args` based on user-supplied
-command-line values.  When :meth:`parse_args` returns from parsing this command
+``options`` object returned by :meth:`~OptionParser.parse_args` based on user-supplied
+command-line values.  When :meth:`~OptionParser.parse_args` returns from parsing this command
 line, ``options.filename`` will be ``"outfile"`` and ``options.verbose`` will be
 ``False``.  :mod:`optparse` supports both long and short options, allows short
 options to be merged together, and allows options to be associated with their
@@ -285,10 +286,10 @@ program's command line::
 
    (options, args) = parser.parse_args()
 
-(If you like, you can pass a custom argument list to :meth:`parse_args`, but
+(If you like, you can pass a custom argument list to :meth:`~OptionParser.parse_args`, but
 that's rarely necessary: by default it uses ``sys.argv[1:]``.)
 
-:meth:`parse_args` returns two values:
+:meth:`~OptionParser.parse_args` returns two values:
 
 * ``options``, an object containing values for all of your options---e.g. if
   ``--file`` takes a single string argument, then ``options.file`` will be the
@@ -339,7 +340,7 @@ Now let's make up a fake command line and ask :mod:`optparse` to parse it::
 
 When :mod:`optparse` sees the option string ``-f``, it consumes the next
 argument, ``foo.txt``, and stores it in ``options.filename``.  So, after this
-call to :meth:`parse_args`, ``options.filename`` is ``"foo.txt"``.
+call to :meth:`~OptionParser.parse_args`, ``options.filename`` is ``"foo.txt"``.
 
 Some other option types supported by :mod:`optparse` are ``int`` and ``float``.
 Here's an option that expects an integer argument::
@@ -453,7 +454,8 @@ Again, the default value for ``verbose`` will be ``True``: the last default
 value supplied for any particular destination is the one that counts.
 
 A clearer way to specify default values is the :meth:`set_defaults` method of
-OptionParser, which you can call at any time before calling :meth:`parse_args`::
+OptionParser, which you can call at any time before calling
+:meth:`~OptionParser.parse_args`::
 
    parser.set_defaults(verbose=True)
    parser.add_option(...)
@@ -811,7 +813,7 @@ The first step in using :mod:`optparse` is to create an OptionParser instance.
       help option.  When :mod:`optparse` prints the usage string, it expands
       ``%prog`` to ``os.path.basename(sys.argv[0])`` (or to ``prog`` if you
       passed that keyword argument).  To suppress a usage message, pass the
-      special value :data:`optparse.SUPPRESS_USAGE`.
+      special value :const:`optparse.SUPPRESS_USAGE`.
 
    ``option_list`` (default: ``[]``)
       A list of Option objects to populate the parser with.  The options in
@@ -1077,7 +1079,7 @@ relevant to a particular option, or fail to pass a required option attribute,
    Help text to print for this option when listing all available options after
    the user supplies a :attr:`~Option.help` option (such as ``--help``).  If
    no help text is supplied, the option will be listed without help text.  To
-   hide this option, use the special value :data:`optparse.SUPPRESS_HELP`.
+   hide this option, use the special value :const:`optparse.SUPPRESS_HELP`.
 
 .. attribute:: Option.metavar
 
@@ -1249,7 +1251,7 @@ must specify for any option using that action.
 
   If no :attr:`~Option.help` string is supplied for an option, it will still be
   listed in the help message.  To omit an option entirely, use the special value
-  :data:`optparse.SUPPRESS_HELP`.
+  :const:`optparse.SUPPRESS_HELP`.
 
   :mod:`optparse` automatically adds a :attr:`~Option.help` option to all
   OptionParsers, so you do not normally need to create one.
@@ -1338,35 +1340,37 @@ Parsing arguments
 ^^^^^^^^^^^^^^^^^
 
 The whole point of creating and populating an OptionParser is to call its
-:meth:`parse_args` method::
+:meth:`~OptionParser.parse_args` method.
 
-   (options, args) = parser.parse_args(args=None, values=None)
+.. method:: OptionParser.parse_args(args=None, values=None)
 
-where the input parameters are
+   Parse the command-line options found in *args*.
 
-``args``
-   the list of arguments to process (default: ``sys.argv[1:]``)
+   The input parameters are
 
-``values``
-   an :class:`optparse.Values` object to store option arguments in (default: a
-   new instance of :class:`Values`) -- if you give an existing object, the
-   option defaults will not be initialized on it
+   ``args``
+      the list of arguments to process (default: ``sys.argv[1:]``)
 
-and the return values are
+   ``values``
+      an :class:`Values` object to store option arguments in (default: a
+      new instance of :class:`Values`) -- if you give an existing object, the
+      option defaults will not be initialized on it
 
-``options``
-   the same object that was passed in as ``values``, or the optparse.Values
-   instance created by :mod:`optparse`
+   and the return value is a pair ``(options, args)`` where
 
-``args``
-   the leftover positional arguments after all options have been processed
+   ``options``
+      the same object that was passed in as *values*, or the ``optparse.Values``
+      instance created by :mod:`optparse`
+
+   ``args``
+      the leftover positional arguments after all options have been processed
 
 The most common usage is to supply neither keyword argument.  If you supply
 ``values``, it will be modified with repeated :func:`setattr` calls (roughly one
 for every option argument stored to an option destination) and returned by
-:meth:`parse_args`.
+:meth:`~OptionParser.parse_args`.
 
-If :meth:`parse_args` encounters any errors in the argument list, it calls the
+If :meth:`~OptionParser.parse_args` encounters any errors in the argument list, it calls the
 OptionParser's :meth:`error` method with an appropriate end-user error message.
 This ultimately terminates your process with an exit status of 2 (the
 traditional Unix exit status for command-line errors).
@@ -1518,7 +1522,7 @@ OptionParser supports several other public methods:
 
    Set the usage string according to the rules described above for the ``usage``
    constructor keyword argument.  Passing ``None`` sets the default usage
-   string; use :data:`optparse.SUPPRESS_USAGE` to suppress a usage message.
+   string; use :const:`optparse.SUPPRESS_USAGE` to suppress a usage message.
 
 .. method:: OptionParser.print_usage(file=None)
 
@@ -1661,7 +1665,7 @@ where
       the current list of leftover arguments, ie. arguments that have been
       consumed but are neither options nor option arguments. Feel free to modify
       ``parser.largs``, e.g. by adding more arguments to it.  (This list will
-      become ``args``, the second return value of :meth:`parse_args`.)
+      become ``args``, the second return value of :meth:`~OptionParser.parse_args`.)
 
    ``parser.rargs``
       the current list of remaining arguments, ie. with ``opt_str`` and
diff --git a/Doc/library/os.path.rst b/Doc/library/os.path.rst
index 7881c52db87090..95933f56d50542 100644
--- a/Doc/library/os.path.rst
+++ b/Doc/library/os.path.rst
@@ -304,6 +304,24 @@ the :mod:`glob` module.)
       Accepts a :term:`path-like object`.
 
 
+.. function:: isdevdrive(path)
+
+   Return ``True`` if pathname *path* is located on a Windows Dev Drive.
+   A Dev Drive is optimized for developer scenarios, and offers faster
+   performance for reading and writing files. It is recommended for use for
+   source code, temporary build directories, package caches, and other
+   IO-intensive operations.
+
+   May raise an error for an invalid path, for example, one without a
+   recognizable drive, but returns ``False`` on platforms that do not support
+   Dev Drives. See `the Windows documentation <https://learn.microsoft.com/windows/dev-drive/>`_
+   for information on enabling and creating Dev Drives.
+
+   .. availability:: Windows.
+
+   .. versionadded:: 3.12
+
+
 .. function:: join(path, *paths)
 
    Join one or more path segments intelligently.  The return value is the
@@ -359,7 +377,8 @@ the :mod:`glob` module.)
 
    Return the canonical path of the specified filename, eliminating any symbolic
    links encountered in the path (if they are supported by the operating
-   system).
+   system). On Windows, this function will also resolve MS-DOS (also called 8.3)
+   style names such as ``C:\\PROGRA~1`` to ``C:\\Program Files``.
 
    If a path doesn't exist or a symlink loop is encountered, and *strict* is
    ``True``, :exc:`OSError` is raised. If *strict* is ``False``, the path is
@@ -392,7 +411,7 @@ the :mod:`glob` module.)
    *start*.  On Windows, :exc:`ValueError` is raised when *path* and *start*
    are on different drives.
 
-   *start* defaults to :attr:`os.curdir`.
+   *start* defaults to :data:`os.curdir`.
 
    .. availability:: Unix, Windows.
 
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 641e289e77c518..fe573f188ab066 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -60,7 +60,7 @@ Notes on the availability of these functions:
    ``'java'``.
 
    .. seealso::
-      :attr:`sys.platform` has a finer granularity.  :func:`os.uname` gives
+      :data:`sys.platform` has a finer granularity.  :func:`os.uname` gives
       system-dependent version information.
 
       The :mod:`platform` module provides detailed checks for the
@@ -88,8 +88,8 @@ startup by the :c:func:`PyConfig_Read` function: see
    On some systems, conversion using the file system encoding may fail. In this
    case, Python uses the :ref:`surrogateescape encoding error handler
    <surrogateescape>`, which means that undecodable bytes are replaced by a
-   Unicode character U+DCxx on decoding, and these are again translated to the
-   original byte on encoding.
+   Unicode character U+DC\ *xx* on decoding, and these are again
+   translated to the original byte on encoding.
 
 
 The :term:`file system encoding <filesystem encoding and error handler>` must
@@ -215,7 +215,7 @@ process and user.
 
       On some platforms, including FreeBSD and macOS, setting ``environ`` may
       cause memory leaks.  Refer to the system documentation for
-      :c:func:`putenv`.
+      :c:func:`!putenv`.
 
    You can delete items in this mapping to unset environment variables.
    :func:`unsetenv` will be called automatically when an item is deleted from
@@ -233,7 +233,7 @@ process and user.
    :data:`environ` and :data:`environb` are synchronized (modifying
    :data:`environb` updates :data:`environ`, and vice versa).
 
-   :data:`environb` is only available if :data:`supports_bytes_environ` is
+   :data:`environb` is only available if :const:`supports_bytes_environ` is
    ``True``.
 
    .. versionadded:: 3.2
@@ -331,7 +331,7 @@ process and user.
    future environment changes.
 
 
-   :func:`getenvb` is only available if :data:`supports_bytes_environ`
+   :func:`getenvb` is only available if :const:`supports_bytes_environ`
    is ``True``.
 
    .. availability:: Unix.
@@ -401,11 +401,11 @@ process and user.
 
       On macOS, :func:`getgroups` behavior differs somewhat from
       other Unix platforms. If the Python interpreter was built with a
-      deployment target of :const:`10.5` or earlier, :func:`getgroups` returns
+      deployment target of ``10.5`` or earlier, :func:`getgroups` returns
       the list of effective group ids associated with the current user process;
       this list is limited to a system-defined number of entries, typically 16,
       and may be modified by calls to :func:`setgroups` if suitably privileged.
-      If built with a deployment target greater than :const:`10.5`,
+      If built with a deployment target greater than ``10.5``,
       :func:`getgroups` returns the current group access list for the user
       associated with the effective user id of the process; the group access
       list may change over the lifetime of the process, it is not affected by
@@ -493,6 +493,17 @@ process and user.
    .. versionadded:: 3.3
 
 
+.. data:: PRIO_DARWIN_THREAD
+          PRIO_DARWIN_PROCESS
+          PRIO_DARWIN_BG
+          PRIO_DARWIN_NONUI
+
+   Parameters for the :func:`getpriority` and :func:`setpriority` functions.
+
+   .. availability:: macOS
+
+   .. versionadded:: 3.12
+
 .. function:: getresuid()
 
    Return a tuple (ruid, euid, suid) denoting the current process's
@@ -553,7 +564,7 @@ process and user.
    .. note::
 
       On some platforms, including FreeBSD and macOS, setting ``environ`` may
-      cause memory leaks. Refer to the system documentation for :c:func:`putenv`.
+      cause memory leaks. Refer to the system documentation for :c:func:`!putenv`.
 
    .. audit-event:: os.putenv key,value os.putenv
 
@@ -635,7 +646,7 @@ process and user.
 
 .. function:: setpgrp()
 
-   Call the system call :c:func:`setpgrp` or ``setpgrp(0, 0)`` depending on
+   Call the system call :c:func:`!setpgrp` or ``setpgrp(0, 0)`` depending on
    which version is implemented (if any).  See the Unix manual for the semantics.
 
    .. availability:: Unix, not Emscripten, not WASI.
@@ -643,7 +654,7 @@ process and user.
 
 .. function:: setpgid(pid, pgrp, /)
 
-   Call the system call :c:func:`setpgid` to set the process group id of the
+   Call the system call :c:func:`!setpgid` to set the process group id of the
    process with id *pid* to the process group with id *pgrp*.  See the Unix manual
    for the semantics.
 
@@ -703,14 +714,14 @@ process and user.
 
 .. function:: getsid(pid, /)
 
-   Call the system call :c:func:`getsid`.  See the Unix manual for the semantics.
+   Call the system call :c:func:`!getsid`.  See the Unix manual for the semantics.
 
    .. availability:: Unix, not Emscripten, not WASI.
 
 
 .. function:: setsid()
 
-   Call the system call :c:func:`setsid`.  See the Unix manual for the semantics.
+   Call the system call :c:func:`!setsid`.  See the Unix manual for the semantics.
 
    .. availability:: Unix, not Emscripten, not WASI.
 
@@ -728,7 +739,7 @@ process and user.
 .. function:: strerror(code, /)
 
    Return the error message corresponding to the error code in *code*.
-   On platforms where :c:func:`strerror` returns ``NULL`` when given an unknown
+   On platforms where :c:func:`!strerror` returns ``NULL`` when given an unknown
    error number, :exc:`ValueError` is raised.
 
 
@@ -912,7 +923,7 @@ as internal buffering of data.
 
    In Linux kernel older than 5.3, the files pointed by *src* and *dst*
    must reside in the same filesystem, otherwise an :exc:`OSError` is
-   raised with :attr:`~OSError.errno` set to :data:`errno.EXDEV`.
+   raised with :attr:`~OSError.errno` set to :const:`errno.EXDEV`.
 
    This copy is done without the additional cost of transferring data
    from the kernel to user space and then back into the kernel. Additionally,
@@ -1066,7 +1077,7 @@ as internal buffering of data.
 .. function:: fsync(fd)
 
    Force write of file with filedescriptor *fd* to disk.  On Unix, this calls the
-   native :c:func:`fsync` function; on Windows, the MS :c:func:`_commit` function.
+   native :c:func:`!fsync` function; on Windows, the MS :c:func:`!_commit` function.
 
    If you're starting with a buffered Python :term:`file object` *f*, first do
    ``f.flush()``, and then do ``os.fsync(f.fileno())``, to ensure that all internal
@@ -1152,25 +1163,65 @@ as internal buffering of data.
    .. versionadded:: 3.11
 
 
-.. function:: lseek(fd, pos, how, /)
+.. function:: lseek(fd, pos, whence, /)
 
    Set the current position of file descriptor *fd* to position *pos*, modified
-   by *how*: :const:`SEEK_SET` or ``0`` to set the position relative to the
-   beginning of the file; :const:`SEEK_CUR` or ``1`` to set it relative to the
-   current position; :const:`SEEK_END` or ``2`` to set it relative to the end of
-   the file. Return the new cursor position in bytes, starting from the beginning.
+   by *whence*, and return the new position in bytes relative to
+   the start of the file.
+   Valid values for *whence* are:
+
+   * :const:`SEEK_SET` or ``0`` -- set *pos* relative to the beginning of the file
+   * :const:`SEEK_CUR` or ``1`` -- set *pos* relative to the current file position
+   * :const:`SEEK_END` or ``2`` -- set *pos* relative to the end of the file
+   * :const:`SEEK_HOLE` -- set *pos* to the next data location, relative to *pos*
+   * :const:`SEEK_DATA` -- set *pos* to the next data hole, relative to *pos*
+
+   .. versionchanged:: 3.3
+
+      Add support for :const:`!SEEK_HOLE` and :const:`!SEEK_DATA`.
 
 
 .. data:: SEEK_SET
           SEEK_CUR
           SEEK_END
 
-   Parameters to the :func:`lseek` function. Their values are 0, 1, and 2,
-   respectively.
+   Parameters to the :func:`lseek` function and the :meth:`~io.IOBase.seek`
+   method on :term:`file-like objects <file object>`,
+   for whence to adjust the file position indicator.
+
+   :const:`SEEK_SET`
+      Adjust the file position relative to the beginning of the file.
+   :const:`SEEK_CUR`
+      Adjust the file position relative to the current file position.
+   :const:`SEEK_END`
+      Adjust the file position relative to the end of the file.
+
+   Their values are 0, 1, and 2, respectively.
+
+
+.. data:: SEEK_HOLE
+          SEEK_DATA
+
+   Parameters to the :func:`lseek` function and the :meth:`~io.IOBase.seek`
+   method on :term:`file-like objects <file object>`,
+   for seeking file data and holes on sparsely allocated files.
+
+   :data:`!SEEK_DATA`
+      Adjust the file offset to the next location containing data,
+      relative to the seek position.
+
+   :data:`!SEEK_HOLE`
+      Adjust the file offset to the next location containing a hole,
+      relative to the seek position.
+      A hole is defined as a sequence of zeros.
+
+   .. note::
+
+      These operations only make sense for filesystems that support them.
+
+   .. availability:: Linux >= 3.1, macOS, Unix
 
    .. versionadded:: 3.3
-      Some operating systems could support additional values, like
-      :data:`os.SEEK_HOLE` or :data:`os.SEEK_DATA`.
 
 
 .. function:: open(path, flags, mode=0o777, *, dir_fd=None)
@@ -1411,7 +1462,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
 
    If some data was successfully read, it will return the number of bytes read.
    If no bytes were read, it will return ``-1`` and set errno to
-   :data:`errno.EAGAIN`.
+   :const:`errno.EAGAIN`.
 
    .. availability:: Linux >= 4.14.
 
@@ -1567,25 +1618,6 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
       Parameters *out* and *in* was renamed to *out_fd* and *in_fd*.
 
 
-.. function:: set_blocking(fd, blocking, /)
-
-   Set the blocking mode of the specified file descriptor. Set the
-   :data:`O_NONBLOCK` flag if blocking is ``False``, clear the flag otherwise.
-
-   See also :func:`get_blocking` and :meth:`socket.socket.setblocking`.
-
-   .. availability:: Unix, Windows.
-
-      The function is limited on Emscripten and WASI, see
-      :ref:`wasm-availability` for more information.
-
-      On Windows, this function is limited to pipes.
-
-   .. versionadded:: 3.5
-
-   .. versionchanged:: 3.12
-      Added support for pipes on Windows.
-
 .. data:: SF_NODISKIO
           SF_MNOWAIT
           SF_SYNC
@@ -1607,6 +1639,26 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
    .. versionadded:: 3.11
 
 
+.. function:: set_blocking(fd, blocking, /)
+
+   Set the blocking mode of the specified file descriptor. Set the
+   :data:`O_NONBLOCK` flag if blocking is ``False``, clear the flag otherwise.
+
+   See also :func:`get_blocking` and :meth:`socket.socket.setblocking`.
+
+   .. availability:: Unix, Windows.
+
+      The function is limited on Emscripten and WASI, see
+      :ref:`wasm-availability` for more information.
+
+      On Windows, this function is limited to pipes.
+
+   .. versionadded:: 3.5
+
+   .. versionchanged:: 3.12
+      Added support for pipes on Windows.
+
+
 .. function:: splice(src, dst, count, offset_src=None, offset_dst=None)
 
    Transfer *count* bytes from file descriptor *src*, starting from offset
@@ -1616,7 +1668,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
    *offset_dst*. The offset associated to the file descriptor that refers to a
    pipe must be ``None``. The files pointed by *src* and *dst* must reside in
    the same filesystem, otherwise an :exc:`OSError` is raised with
-   :attr:`~OSError.errno` set to :data:`errno.EXDEV`.
+   :attr:`~OSError.errno` set to :const:`errno.EXDEV`.
 
    This copy is done without the additional cost of transferring data
    from the kernel to user space and then back into the kernel. Additionally,
@@ -1949,18 +2001,18 @@ features:
    Set the flags of *path* to the numeric *flags*. *flags* may take a combination
    (bitwise OR) of the following values (as defined in the :mod:`stat` module):
 
-   * :data:`stat.UF_NODUMP`
-   * :data:`stat.UF_IMMUTABLE`
-   * :data:`stat.UF_APPEND`
-   * :data:`stat.UF_OPAQUE`
-   * :data:`stat.UF_NOUNLINK`
-   * :data:`stat.UF_COMPRESSED`
-   * :data:`stat.UF_HIDDEN`
-   * :data:`stat.SF_ARCHIVED`
-   * :data:`stat.SF_IMMUTABLE`
-   * :data:`stat.SF_APPEND`
-   * :data:`stat.SF_NOUNLINK`
-   * :data:`stat.SF_SNAPSHOT`
+   * :const:`stat.UF_NODUMP`
+   * :const:`stat.UF_IMMUTABLE`
+   * :const:`stat.UF_APPEND`
+   * :const:`stat.UF_OPAQUE`
+   * :const:`stat.UF_NOUNLINK`
+   * :const:`stat.UF_COMPRESSED`
+   * :const:`stat.UF_HIDDEN`
+   * :const:`stat.SF_ARCHIVED`
+   * :const:`stat.SF_IMMUTABLE`
+   * :const:`stat.SF_APPEND`
+   * :const:`stat.SF_NOUNLINK`
+   * :const:`stat.SF_SNAPSHOT`
 
    This function can support :ref:`not following symlinks <follow_symlinks>`.
 
@@ -1981,25 +2033,25 @@ features:
    following values (as defined in the :mod:`stat` module) or bitwise ORed
    combinations of them:
 
-   * :data:`stat.S_ISUID`
-   * :data:`stat.S_ISGID`
-   * :data:`stat.S_ENFMT`
-   * :data:`stat.S_ISVTX`
-   * :data:`stat.S_IREAD`
-   * :data:`stat.S_IWRITE`
-   * :data:`stat.S_IEXEC`
-   * :data:`stat.S_IRWXU`
-   * :data:`stat.S_IRUSR`
-   * :data:`stat.S_IWUSR`
-   * :data:`stat.S_IXUSR`
-   * :data:`stat.S_IRWXG`
-   * :data:`stat.S_IRGRP`
-   * :data:`stat.S_IWGRP`
-   * :data:`stat.S_IXGRP`
-   * :data:`stat.S_IRWXO`
-   * :data:`stat.S_IROTH`
-   * :data:`stat.S_IWOTH`
-   * :data:`stat.S_IXOTH`
+   * :const:`stat.S_ISUID`
+   * :const:`stat.S_ISGID`
+   * :const:`stat.S_ENFMT`
+   * :const:`stat.S_ISVTX`
+   * :const:`stat.S_IREAD`
+   * :const:`stat.S_IWRITE`
+   * :const:`stat.S_IEXEC`
+   * :const:`stat.S_IRWXU`
+   * :const:`stat.S_IRUSR`
+   * :const:`stat.S_IWUSR`
+   * :const:`stat.S_IXUSR`
+   * :const:`stat.S_IRWXG`
+   * :const:`stat.S_IRGRP`
+   * :const:`stat.S_IWGRP`
+   * :const:`stat.S_IXGRP`
+   * :const:`stat.S_IRWXO`
+   * :const:`stat.S_IROTH`
+   * :const:`stat.S_IWOTH`
+   * :const:`stat.S_IXOTH`
 
    This function can support :ref:`specifying a file descriptor <path_fd>`,
    :ref:`paths relative to directory descriptors <dir_fd>` and :ref:`not
@@ -2139,7 +2191,7 @@ features:
 
    .. audit-event:: os.link src,dst,src_dir_fd,dst_dir_fd os.link
 
-   .. availability:: Unix, Windows.
+   .. availability:: Unix, Windows, not Emscripten.
 
    .. versionchanged:: 3.2
       Added Windows support.
@@ -2253,7 +2305,7 @@ features:
 
 .. function:: lstat(path, *, dir_fd=None)
 
-   Perform the equivalent of an :c:func:`lstat` system call on the given path.
+   Perform the equivalent of an :c:func:`!lstat` system call on the given path.
    Similar to :func:`~os.stat`, but does not follow symbolic links. Return a
    :class:`stat_result` object.
 
@@ -2409,13 +2461,13 @@ features:
 .. function:: major(device, /)
 
    Extract the device major number from a raw device number (usually the
-   :attr:`st_dev` or :attr:`st_rdev` field from :c:type:`stat`).
+   :attr:`st_dev` or :attr:`st_rdev` field from :c:struct:`stat`).
 
 
 .. function:: minor(device, /)
 
    Extract the device minor number from a raw device number (usually the
-   :attr:`st_dev` or :attr:`st_rdev` field from :c:type:`stat`).
+   :attr:`st_dev` or :attr:`st_rdev` field from :c:struct:`stat`).
 
 
 .. function:: makedev(major, minor, /)
@@ -2926,7 +2978,7 @@ features:
 .. class:: stat_result
 
    Object whose attributes correspond roughly to the members of the
-   :c:type:`stat` structure. It is used for the result of :func:`os.stat`,
+   :c:struct:`stat` structure. It is used for the result of :func:`os.stat`,
    :func:`os.fstat` and :func:`os.lstat`.
 
    Attributes:
@@ -3096,22 +3148,24 @@ features:
 
       Windows file attributes: ``dwFileAttributes`` member of the
       ``BY_HANDLE_FILE_INFORMATION`` structure returned by
-      :c:func:`GetFileInformationByHandle`. See the ``FILE_ATTRIBUTE_*``
+      :c:func:`!GetFileInformationByHandle`.
+      See the :const:`!FILE_ATTRIBUTE_* <stat.FILE_ATTRIBUTE_ARCHIVE>`
       constants in the :mod:`stat` module.
 
    .. attribute:: st_reparse_tag
 
-      When :attr:`st_file_attributes` has the ``FILE_ATTRIBUTE_REPARSE_POINT``
+      When :attr:`st_file_attributes` has the :const:`~stat.FILE_ATTRIBUTE_REPARSE_POINT`
       set, this field contains the tag identifying the type of reparse point.
-      See the ``IO_REPARSE_TAG_*`` constants in the :mod:`stat` module.
+      See the :const:`IO_REPARSE_TAG_* <stat.IO_REPARSE_TAG_SYMLINK>`
+      constants in the :mod:`stat` module.
 
    The standard module :mod:`stat` defines functions and constants that are
-   useful for extracting information from a :c:type:`stat` structure. (On
+   useful for extracting information from a :c:struct:`stat` structure. (On
    Windows, some items are filled with dummy values.)
 
    For backward compatibility, a :class:`stat_result` instance is also
    accessible as a tuple of at least 10 integers giving the most important (and
-   portable) members of the :c:type:`stat` structure, in the order
+   portable) members of the :c:struct:`stat` structure, in the order
    :attr:`st_mode`, :attr:`st_ino`, :attr:`st_dev`, :attr:`st_nlink`,
    :attr:`st_uid`, :attr:`st_gid`, :attr:`st_size`, :attr:`st_atime`,
    :attr:`st_mtime`, :attr:`st_ctime`. More items may be added at the end by
@@ -3161,9 +3215,9 @@ features:
 
 .. function:: statvfs(path)
 
-   Perform a :c:func:`statvfs` system call on the given path.  The return value is
+   Perform a :c:func:`!statvfs` system call on the given path.  The return value is
    an object whose attributes describe the filesystem on the given path, and
-   correspond to the members of the :c:type:`statvfs` structure, namely:
+   correspond to the members of the :c:struct:`statvfs` structure, namely:
    :attr:`f_bsize`, :attr:`f_frsize`, :attr:`f_blocks`, :attr:`f_bfree`,
    :attr:`f_bavail`, :attr:`f_files`, :attr:`f_ffree`, :attr:`f_favail`,
    :attr:`f_flag`, :attr:`f_namemax`, :attr:`f_fsid`.
@@ -3727,6 +3781,217 @@ features:
    .. versionadded:: 3.10
 
 
+Timer File Descriptors
+~~~~~~~~~~~~~~~~~~~~~~
+
+.. versionadded:: 3.13
+
+These functions provide support for Linux's *timer file descriptor* API.
+Naturally, they are all only available on Linux.
+
+.. function:: timerfd_create(clockid, /, *, flags=0)
+
+   Create and return a timer file descriptor (*timerfd*).
+
+   The file descriptor returned by :func:`timerfd_create` supports:
+
+   - :func:`read`
+   - :func:`~select.select`
+   - :func:`~select.poll`
+
+   The file descriptor's :func:`read` method can be called with a buffer size
+   of 8. If the timer has already expired one or more times, :func:`read`
+   returns the number of expirations with the host's endianness, which may be
+   converted to an :class:`int` by ``int.from_bytes(x, byteorder=sys.byteorder)``.
+
+   :func:`~select.select` and :func:`~select.poll` can be used to wait until
+   timer expires and the file descriptor is readable.
+
+   *clockid* must be a valid :ref:`clock ID <time-clock-id-constants>`,
+   as defined in the :py:mod:`time` module:
+
+   - :const:`time.CLOCK_REALTIME`
+   - :const:`time.CLOCK_MONOTONIC`
+   - :const:`time.CLOCK_BOOTTIME` (Since Linux 3.15 for timerfd_create)
+
+   If *clockid* is :const:`time.CLOCK_REALTIME`, a settable system-wide
+   real-time clock is used. If system clock is changed, timer setting need
+   to be updated. To cancel timer when system clock is changed, see
+   :const:`TFD_TIMER_CANCEL_ON_SET`.
+
+   If *clockid* is :const:`time.CLOCK_MONOTONIC`, a non-settable monotonically
+   increasing clock is used. Even if the system clock is changed, the timer
+   setting will not be affected.
+
+   If *clockid* is :const:`time.CLOCK_BOOTTIME`, same as :const:`time.CLOCK_MONOTONIC`
+   except it includes any time that the system is suspended.
+
+   The file descriptor's behaviour can be modified by specifying a *flags* value.
+   Any of the following variables may used, combined using bitwise OR
+   (the ``|`` operator):
+
+   - :const:`TFD_NONBLOCK`
+   - :const:`TFD_CLOEXEC`
+
+   If :const:`TFD_NONBLOCK` is not set as a flag, :func:`read` blocks until
+   the timer expires. If it is set as a flag, :func:`read` doesn't block, but
+   If there hasn't been an expiration since the last call to read,
+   :func:`read` raises :class:`OSError` with ``errno`` is set to
+   :const:`errno.EAGAIN`.
+
+   :const:`TFD_CLOEXEC` is always set by Python automatically.
+
+   The file descriptor must be closed with :func:`os.close` when it is no
+   longer needed, or else the file descriptor will be leaked.
+
+   .. seealso:: The :manpage:`timerfd_create(2)` man page.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+
+.. function:: timerfd_settime(fd, /, *, flags=flags, initial=0.0, interval=0.0)
+
+   Alter a timer file descriptor's internal timer.
+   This function operates the same interval timer as :func:`timerfd_settime_ns`.
+
+   *fd* must be a valid timer file descriptor.
+
+   The timer's behaviour can be modified by specifying a *flags* value.
+   Any of the following variables may used, combined using bitwise OR
+   (the ``|`` operator):
+
+   - :const:`TFD_TIMER_ABSTIME`
+   - :const:`TFD_TIMER_CANCEL_ON_SET`
+
+   The timer is disabled by setting *initial* to zero (``0``).
+   If *initial* is equal to or greater than zero, the timer is enabled.
+   If *initial* is less than zero, it raises an :class:`OSError` exception
+   with ``errno`` set to :const:`errno.EINVAL`
+
+   By default the timer will fire when *initial* seconds have elapsed.
+   (If *initial* is zero, timer will fire immediately.)
+
+   However, if the :const:`TFD_TIMER_ABSTIME` flag is set,
+   the timer will fire when the timer's clock
+   (set by *clockid* in :func:`timerfd_create`) reaches *initial* seconds.
+
+   The timer's interval is set by the *interval* :py:class:`float`.
+   If *interval* is zero, the timer only fires once, on the initial expiration.
+   If *interval* is greater than zero, the timer fires every time *interval*
+   seconds have elapsed since the previous expiration.
+   If *interval* is less than zero, it raises :class:`OSError` with ``errno``
+   set to :const:`errno.EINVAL`
+
+   If the :const:`TFD_TIMER_CANCEL_ON_SET` flag is set along with
+   :const:`TFD_TIMER_ABSTIME` and the clock for this timer is
+   :const:`time.CLOCK_REALTIME`, the timer is marked as cancelable if the
+   real-time clock is changed discontinuously. Reading the descriptor is
+   aborted with the error ECANCELED.
+
+   Linux manages system clock as UTC. A daylight-savings time transition is
+   done by changing time offset only and doesn't cause discontinuous system
+   clock change.
+
+   Discontinuous system clock change will be caused by the following events:
+
+   - ``settimeofday``
+   - ``clock_settime``
+   - set the system date and time by ``date`` command
+
+   Return a two-item tuple of (``next_expiration``, ``interval``) from
+   the previous timer state, before this function executed.
+
+   .. seealso::
+
+      :manpage:`timerfd_create(2)`, :manpage:`timerfd_settime(2)`,
+      :manpage:`settimeofday(2)`, :manpage:`clock_settime(2)`,
+      and :manpage:`date(1)`.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+
+.. function:: timerfd_settime_ns(fd, /, *, flags=0, initial=0, interval=0)
+
+   Similar to :func:`timerfd_settime`, but use time as nanoseconds.
+   This function operates the same interval timer as :func:`timerfd_settime`.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+
+.. function:: timerfd_gettime(fd, /)
+
+   Return a two-item tuple of floats (``next_expiration``, ``interval``).
+
+   ``next_expiration`` denotes the relative time until next the timer next fires,
+   regardless of if the :const:`TFD_TIMER_ABSTIME` flag is set.
+
+   ``interval`` denotes the timer's interval.
+   If zero, the timer will only fire once, after ``next_expiration`` seconds
+   have elapsed.
+
+   .. seealso:: :manpage:`timerfd_gettime(2)`
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+
+.. function:: timerfd_gettime_ns(fd, /)
+
+   Similar to :func:`timerfd_gettime`, but return time as nanoseconds.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+.. data:: TFD_NONBLOCK
+
+   A flag for the :func:`timerfd_create` function,
+   which sets the :const:`O_NONBLOCK` status flag for the new timer file
+   descriptor. If :const:`TFD_NONBLOCK` is not set as a flag, :func:`read` blocks.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+.. data:: TFD_CLOEXEC
+
+   A flag for the :func:`timerfd_create` function,
+   If :const:`TFD_CLOEXEC` is set as a flag, set close-on-exec flag for new file
+   descriptor.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+.. data:: TFD_TIMER_ABSTIME
+
+   A flag for the :func:`timerfd_settime` and :func:`timerfd_settime_ns` functions.
+   If this flag is set, *initial* is interpreted as an absolute value on the
+   timer's clock (in UTC seconds or nanoseconds since the Unix Epoch).
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+.. data:: TFD_TIMER_CANCEL_ON_SET
+
+   A flag for the :func:`timerfd_settime` and :func:`timerfd_settime_ns`
+   functions along with :const:`TFD_TIMER_ABSTIME`.
+   The timer is cancelled when the time of the underlying clock changes
+   discontinuously.
+
+   .. availability:: Linux >= 2.6.27 with glibc >= 2.8
+
+   .. versionadded:: 3.13
+
+
 Linux extended attributes
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -4103,15 +4368,38 @@ written in Python, such as a mail server's external command delivery program.
 
    .. audit-event:: os.fork "" os.fork
 
+   .. warning::
+
+      If you use TLS sockets in an application calling ``fork()``, see
+      the warning in the :mod:`ssl` documentation.
+
    .. versionchanged:: 3.8
       Calling ``fork()`` in a subinterpreter is no longer supported
       (:exc:`RuntimeError` is raised).
 
-   .. warning::
-
-      See :mod:`ssl` for applications that use the SSL module with fork().
+   .. versionchanged:: 3.12
+      If Python is able to detect that your process has multiple
+      threads, :func:`os.fork` now raises a :exc:`DeprecationWarning`.
+
+      We chose to surface this as a warning, when detectable, to better
+      inform developers of a design problem that the POSIX platform
+      specifically notes as not supported. Even in code that
+      *appears* to work, it has never been safe to mix threading with
+      :func:`os.fork` on POSIX platforms. The CPython runtime itself has
+      always made API calls that are not safe for use in the child
+      process when threads existed in the parent (such as ``malloc`` and
+      ``free``).
+
+      Users of macOS or users of libc or malloc implementations other
+      than those typically found in glibc to date are among those
+      already more likely to experience deadlocks running such code.
+
+      See `this discussion on fork being incompatible with threads
+      <https://discuss.python.org/t/33555>`_
+      for technical details of why we're surfacing this longstanding
+      platform compatibility problem to developers.
 
-   .. availability:: Unix, not Emscripten, not WASI.
+   .. availability:: POSIX, not Emscripten, not WASI.
 
 
 .. function:: forkpty()
@@ -4124,6 +4412,11 @@ written in Python, such as a mail server's external command delivery program.
 
    .. audit-event:: os.forkpty "" os.forkpty
 
+   .. versionchanged:: 3.12
+      If Python is able to detect that your process has multiple
+      threads, this now raises a :exc:`DeprecationWarning`. See the
+      longer explanation on :func:`os.fork`.
+
    .. versionchanged:: 3.8
       Calling ``forkpty()`` in a subinterpreter is no longer supported
       (:exc:`RuntimeError` is raised).
@@ -4140,8 +4433,8 @@ written in Python, such as a mail server's external command delivery program.
    Send signal *sig* to the process *pid*.  Constants for the specific signals
    available on the host platform are defined in the :mod:`signal` module.
 
-   Windows: The :data:`signal.CTRL_C_EVENT` and
-   :data:`signal.CTRL_BREAK_EVENT` signals are special signals which can
+   Windows: The :const:`signal.CTRL_C_EVENT` and
+   :const:`signal.CTRL_BREAK_EVENT` signals are special signals which can
    only be sent to console processes which share a common console window,
    e.g., some subprocesses. Any other value for *sig* will cause the process
    to be unconditionally killed by the TerminateProcess API, and the exit code
@@ -4194,7 +4487,7 @@ written in Python, such as a mail server's external command delivery program.
       This flag indicates that the file descriptor will be non-blocking.
       If the process referred to by the file descriptor has not yet terminated,
       then an attempt to wait on the file descriptor using :manpage:`waitid(2)`
-      will immediately return the error :data:`~errno.EAGAIN` rather than blocking.
+      will immediately return the error :const:`~errno.EAGAIN` rather than blocking.
 
    .. availability:: Linux >= 5.10
    .. versionadded:: 3.12
@@ -4252,7 +4545,7 @@ written in Python, such as a mail server's external command delivery program.
                           setpgroup=None, resetids=False, setsid=False, setsigmask=(), \
                           setsigdef=(), scheduler=None)
 
-   Wraps the :c:func:`posix_spawn` C library API for use from Python.
+   Wraps the :c:func:`!posix_spawn` C library API for use from Python.
 
    Most users should use :func:`subprocess.run` instead of :func:`posix_spawn`.
 
@@ -4288,16 +4581,16 @@ written in Python, such as a mail server's external command delivery program.
       Performs ``os.dup2(fd, new_fd)``.
 
    These tuples correspond to the C library
-   :c:func:`posix_spawn_file_actions_addopen`,
-   :c:func:`posix_spawn_file_actions_addclose`, and
-   :c:func:`posix_spawn_file_actions_adddup2` API calls used to prepare
-   for the :c:func:`posix_spawn` call itself.
+   :c:func:`!posix_spawn_file_actions_addopen`,
+   :c:func:`!posix_spawn_file_actions_addclose`, and
+   :c:func:`!posix_spawn_file_actions_adddup2` API calls used to prepare
+   for the :c:func:`!posix_spawn` call itself.
 
    The *setpgroup* argument will set the process group of the child to the value
    specified. If the value specified is 0, the child's process group ID will be
    made the same as its process ID. If the value of *setpgroup* is not set, the
    child will inherit the parent's process group ID. This argument corresponds
-   to the C library :c:data:`POSIX_SPAWN_SETPGROUP` flag.
+   to the C library :c:macro:`!POSIX_SPAWN_SETPGROUP` flag.
 
    If the *resetids* argument is ``True`` it will reset the effective UID and
    GID of the child to the real UID and GID of the parent process. If the
@@ -4305,27 +4598,27 @@ written in Python, such as a mail server's external command delivery program.
    the parent. In either case, if the set-user-ID and set-group-ID permission
    bits are enabled on the executable file, their effect will override the
    setting of the effective UID and GID. This argument corresponds to the C
-   library :c:data:`POSIX_SPAWN_RESETIDS` flag.
+   library :c:macro:`!POSIX_SPAWN_RESETIDS` flag.
 
    If the *setsid* argument is ``True``, it will create a new session ID
-   for ``posix_spawn``. *setsid* requires :c:data:`POSIX_SPAWN_SETSID`
-   or :c:data:`POSIX_SPAWN_SETSID_NP` flag. Otherwise, :exc:`NotImplementedError`
+   for ``posix_spawn``. *setsid* requires :c:macro:`!POSIX_SPAWN_SETSID`
+   or :c:macro:`!POSIX_SPAWN_SETSID_NP` flag. Otherwise, :exc:`NotImplementedError`
    is raised.
 
    The *setsigmask* argument will set the signal mask to the signal set
    specified. If the parameter is not used, then the child inherits the
    parent's signal mask. This argument corresponds to the C library
-   :c:data:`POSIX_SPAWN_SETSIGMASK` flag.
+   :c:macro:`!POSIX_SPAWN_SETSIGMASK` flag.
 
    The *sigdef* argument will reset the disposition of all signals in the set
    specified. This argument corresponds to the C library
-   :c:data:`POSIX_SPAWN_SETSIGDEF` flag.
+   :c:macro:`!POSIX_SPAWN_SETSIGDEF` flag.
 
    The *scheduler* argument must be a tuple containing the (optional) scheduler
    policy and an instance of :class:`sched_param` with the scheduler parameters.
    A value of ``None`` in the place of the scheduler policy indicates that is
    not being provided. This argument is a combination of the C library
-   :c:data:`POSIX_SPAWN_SETSCHEDPARAM` and :c:data:`POSIX_SPAWN_SETSCHEDULER`
+   :c:macro:`!POSIX_SPAWN_SETSCHEDPARAM` and :c:macro:`!POSIX_SPAWN_SETSCHEDULER`
    flags.
 
    .. audit-event:: os.posix_spawn path,argv,env os.posix_spawn
@@ -4338,7 +4631,7 @@ written in Python, such as a mail server's external command delivery program.
                           setpgroup=None, resetids=False, setsid=False, setsigmask=(), \
                           setsigdef=(), scheduler=None)
 
-   Wraps the :c:func:`posix_spawnp` C library API for use from Python.
+   Wraps the :c:func:`!posix_spawnp` C library API for use from Python.
 
    Similar to :func:`posix_spawn` except that the system searches
    for the *executable* file in the list of directories specified by the
@@ -4519,7 +4812,7 @@ written in Python, such as a mail server's external command delivery program.
 
    Use *show_cmd* to override the default window style. Whether this has any
    effect will depend on the application being launched. Values are integers as
-   supported by the Win32 :c:func:`ShellExecute` function.
+   supported by the Win32 :c:func:`!ShellExecute` function.
 
    :func:`startfile` returns as soon as the associated application is launched.
    There is no option to wait for the application to close, and no way to retrieve
@@ -4529,7 +4822,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`os.path.normpath` function to ensure that paths are properly encoded for
    Win32.
 
-   To reduce interpreter startup overhead, the Win32 :c:func:`ShellExecute`
+   To reduce interpreter startup overhead, the Win32 :c:func:`!ShellExecute`
    function is not resolved until this function is first called.  If the function
    cannot be resolved, :exc:`NotImplementedError` will be raised.
 
@@ -4639,11 +4932,11 @@ written in Python, such as a mail server's external command delivery program.
    :data:`WNOHANG` and :data:`WNOWAIT` are additional optional flags.
 
    The return value is an object representing the data contained in the
-   :c:type:`!siginfo_t` structure with the following attributes:
+   :c:type:`siginfo_t` structure with the following attributes:
 
    * :attr:`!si_pid` (process ID)
    * :attr:`!si_uid` (real user ID of the child)
-   * :attr:`!si_signo` (always :data:`~signal.SIGCHLD`)
+   * :attr:`!si_signo` (always :const:`~signal.SIGCHLD`)
    * :attr:`!si_status` (the exit status or signal number, depending on :attr:`!si_code`)
    * :attr:`!si_code` (see :data:`CLD_EXITED` for possible values)
 
@@ -4881,7 +5174,7 @@ used to determine the disposition of a process.
 .. function:: WIFCONTINUED(status)
 
    Return ``True`` if a stopped child has been resumed by delivery of
-   :data:`~signal.SIGCONT` (if the process has been continued from a job
+   :const:`~signal.SIGCONT` (if the process has been continued from a job
    control stop), otherwise return ``False``.
 
    See :data:`WCONTINUED` option.
@@ -5059,8 +5352,12 @@ operating system.
 
 .. function:: sched_getaffinity(pid, /)
 
-   Return the set of CPUs the process with PID *pid* (or the current process
-   if zero) is restricted to.
+   Return the set of CPUs the process with PID *pid* is restricted to.
+
+   If *pid* is zero, return the set of CPUs the calling thread of the current
+   process is restricted to.
+
+   See also the :func:`process_cpu_count` function.
 
 
 .. _os-path:
@@ -5101,15 +5398,18 @@ Miscellaneous System Information
 
 .. function:: cpu_count()
 
-   Return the number of CPUs in the system. Returns ``None`` if undetermined.
-
-   This number is not equivalent to the number of CPUs the current process can
-   use.  The number of usable CPUs can be obtained with
-   ``len(os.sched_getaffinity(0))``
+   Return the number of logical CPUs in the **system**. Returns ``None`` if
+   undetermined.
 
+   The :func:`process_cpu_count` function can be used to get the number of
+   logical CPUs usable by the calling thread of the **current process**.
 
    .. versionadded:: 3.4
 
+   .. versionchanged:: 3.13
+      If :option:`-X cpu_count <-X>` is given or :envvar:`PYTHON_CPU_COUNT` is set,
+      :func:`cpu_count` returns the overridden value *n*.
+
 
 .. function:: getloadavg()
 
@@ -5120,6 +5420,23 @@ Miscellaneous System Information
    .. availability:: Unix.
 
 
+.. function:: process_cpu_count()
+
+   Get the number of logical CPUs usable by the calling thread of the **current
+   process**. Returns ``None`` if undetermined. It can be less than
+   :func:`cpu_count` depending on the CPU affinity.
+
+   The :func:`cpu_count` function can be used to get the number of logical CPUs
+   in the **system**.
+
+   If :option:`-X cpu_count <-X>` is given or :envvar:`PYTHON_CPU_COUNT` is set,
+   :func:`process_cpu_count` returns the overridden value *n*.
+
+   See also the :func:`sched_getaffinity` functions.
+
+   .. versionadded:: 3.13
+
+
 .. function:: sysconf(name, /)
 
    Return integer-valued system configuration values. If the configuration value
@@ -5253,7 +5570,7 @@ Random numbers
    ``/dev/urandom`` devices.
 
    The flags argument is a bit mask that can contain zero or more of the
-   following values ORed together: :py:data:`os.GRND_RANDOM` and
+   following values ORed together: :py:const:`os.GRND_RANDOM` and
    :py:data:`GRND_NONBLOCK`.
 
    See also the `Linux getrandom() manual page
diff --git a/Doc/library/ossaudiodev.rst b/Doc/library/ossaudiodev.rst
deleted file mode 100644
index e14c1bf8d5367e..00000000000000
--- a/Doc/library/ossaudiodev.rst
+++ /dev/null
@@ -1,453 +0,0 @@
-:mod:`ossaudiodev` --- Access to OSS-compatible audio devices
-=============================================================
-
-.. module:: ossaudiodev
-   :platform: Linux, FreeBSD
-   :synopsis: Access to OSS-compatible audio devices.
-   :deprecated:
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`ossaudiodev` module is deprecated
-   (see :pep:`PEP 594 <594#ossaudiodev>` for details).
-
---------------
-
-This module allows you to access the OSS (Open Sound System) audio interface.
-OSS is available for a wide range of open-source and commercial Unices, and is
-the standard audio interface for Linux and recent versions of FreeBSD.
-
-.. Things will get more complicated for future Linux versions, since
-   ALSA is in the standard kernel as of 2.5.x.  Presumably if you
-   use ALSA, you'll have to make sure its OSS compatibility layer
-   is active to use ossaudiodev, but you're going to need it for the vast
-   majority of Linux audio apps anyway.
-
-   Sounds like things are also complicated for other BSDs.  In response
-   to my python-dev query, Thomas Wouters said:
-
-   > Likewise, googling shows OpenBSD also uses OSS/Free -- the commercial
-   > OSS installation manual tells you to remove references to OSS/Free from the
-   > kernel :)
-
-   but Aleksander Piotrowsk actually has an OpenBSD box, and he quotes
-   from its <soundcard.h>:
-   >  * WARNING!  WARNING!
-   >  * This is an OSS (Linux) audio emulator.
-   >  * Use the Native NetBSD API for developing new code, and this
-   >  * only for compiling Linux programs.
-
-   There's also an ossaudio manpage on OpenBSD that explains things
-   further.  Presumably NetBSD and OpenBSD have a different standard
-   audio interface.  That's the great thing about standards, there are so
-   many to choose from ... ;-)
-
-   This probably all warrants a footnote or two, but I don't understand
-   things well enough right now to write it!   --GPW
-
-.. versionchanged:: 3.3
-   Operations in this module now raise :exc:`OSError` where :exc:`IOError`
-   was raised.
-
-
-.. seealso::
-
-   `Open Sound System Programmer's Guide <http://www.opensound.com/pguide/oss.pdf>`_
-      the official documentation for the OSS C API
-
-   The module defines a large number of constants supplied by the OSS device
-   driver; see ``<sys/soundcard.h>`` on either Linux or FreeBSD for a listing.
-
-:mod:`ossaudiodev` defines the following variables and functions:
-
-
-.. exception:: OSSAudioError
-
-   This exception is raised on certain errors.  The argument is a string describing
-   what went wrong.
-
-   (If :mod:`ossaudiodev` receives an error from a system call such as
-   :c:func:`open`, :c:func:`write`, or :c:func:`ioctl`, it raises :exc:`OSError`.
-   Errors detected directly by :mod:`ossaudiodev` result in :exc:`OSSAudioError`.)
-
-   (For backwards compatibility, the exception class is also available as
-   ``ossaudiodev.error``.)
-
-
-.. function:: open(mode)
-              open(device, mode)
-
-   Open an audio device and return an OSS audio device object.  This object
-   supports many file-like methods, such as :meth:`read`, :meth:`write`, and
-   :meth:`fileno` (although there are subtle differences between conventional Unix
-   read/write semantics and those of OSS audio devices).  It also supports a number
-   of audio-specific methods; see below for the complete list of methods.
-
-   *device* is the audio device filename to use.  If it is not specified, this
-   module first looks in the environment variable :envvar:`AUDIODEV` for a device
-   to use.  If not found, it falls back to :file:`/dev/dsp`.
-
-   *mode* is one of ``'r'`` for read-only (record) access, ``'w'`` for
-   write-only (playback) access and ``'rw'`` for both. Since many sound cards
-   only allow one process to have the recorder or player open at a time, it is a
-   good idea to open the device only for the activity needed.  Further, some
-   sound cards are half-duplex: they can be opened for reading or writing, but
-   not both at once.
-
-   Note the unusual calling syntax: the *first* argument is optional, and the
-   second is required.  This is a historical artifact for compatibility with the
-   older :mod:`linuxaudiodev` module which :mod:`ossaudiodev` supersedes.
-
-   .. XXX it might also be motivated
-      by my unfounded-but-still-possibly-true belief that the default
-      audio device varies unpredictably across operating systems.  -GW
-
-
-.. function:: openmixer([device])
-
-   Open a mixer device and return an OSS mixer device object.   *device* is the
-   mixer device filename to use.  If it is not specified, this module first looks
-   in the environment variable :envvar:`MIXERDEV` for a device to use.  If not
-   found, it falls back to :file:`/dev/mixer`.
-
-
-.. _ossaudio-device-objects:
-
-Audio Device Objects
---------------------
-
-Before you can write to or read from an audio device, you must call three
-methods in the correct order:
-
-#. :meth:`setfmt` to set the output format
-
-#. :meth:`channels` to set the number of channels
-
-#. :meth:`speed` to set the sample rate
-
-Alternately, you can use the :meth:`setparameters` method to set all three audio
-parameters at once.  This is more convenient, but may not be as flexible in all
-cases.
-
-The audio device objects returned by :func:`.open` define the following methods
-and (read-only) attributes:
-
-
-.. method:: oss_audio_device.close()
-
-   Explicitly close the audio device.  When you are done writing to or reading from
-   an audio device, you should explicitly close it.  A closed device cannot be used
-   again.
-
-
-.. method:: oss_audio_device.fileno()
-
-   Return the file descriptor associated with the device.
-
-
-.. method:: oss_audio_device.read(size)
-
-   Read *size* bytes from the audio input and return them as a Python string.
-   Unlike most Unix device drivers, OSS audio devices in blocking mode (the
-   default) will block :func:`read` until the entire requested amount of data is
-   available.
-
-
-.. method:: oss_audio_device.write(data)
-
-   Write a :term:`bytes-like object` *data* to the audio device and return the
-   number of bytes written.  If the audio device is in blocking mode (the
-   default), the entire data is always written (again, this is different from
-   usual Unix device semantics).  If the device is in non-blocking mode, some
-   data may not be written---see :meth:`writeall`.
-
-   .. versionchanged:: 3.5
-      Writable :term:`bytes-like object` is now accepted.
-
-
-.. method:: oss_audio_device.writeall(data)
-
-   Write a :term:`bytes-like object` *data* to the audio device: waits until
-   the audio device is able to accept data, writes as much data as it will
-   accept, and repeats until *data* has been completely written. If the device
-   is in blocking mode (the default), this has the same effect as
-   :meth:`write`; :meth:`writeall` is only useful in non-blocking mode.  Has
-   no return value, since the amount of data written is always equal to the
-   amount of data supplied.
-
-   .. versionchanged:: 3.5
-      Writable :term:`bytes-like object` is now accepted.
-
-
-.. versionchanged:: 3.2
-   Audio device objects also support the context management protocol, i.e. they can
-   be used in a :keyword:`with` statement.
-
-
-The following methods each map to exactly one :c:func:`ioctl` system call.  The
-correspondence is obvious: for example, :meth:`setfmt` corresponds to the
-``SNDCTL_DSP_SETFMT`` ioctl, and :meth:`sync` to ``SNDCTL_DSP_SYNC`` (this can
-be useful when consulting the OSS documentation).  If the underlying
-:c:func:`ioctl` fails, they all raise :exc:`OSError`.
-
-
-.. method:: oss_audio_device.nonblock()
-
-   Put the device into non-blocking mode.  Once in non-blocking mode, there is no
-   way to return it to blocking mode.
-
-
-.. method:: oss_audio_device.getfmts()
-
-   Return a bitmask of the audio output formats supported by the soundcard.  Some
-   of the formats supported by OSS are:
-
-   +-------------------------+---------------------------------------------+
-   | Format                  | Description                                 |
-   +=========================+=============================================+
-   | :const:`AFMT_MU_LAW`    | a logarithmic encoding (used by Sun ``.au`` |
-   |                         | files and :file:`/dev/audio`)               |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_A_LAW`     | a logarithmic encoding                      |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_IMA_ADPCM` | a 4:1 compressed format defined by the      |
-   |                         | Interactive Multimedia Association          |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_U8`        | Unsigned, 8-bit audio                       |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_S16_LE`    | Signed, 16-bit audio, little-endian byte    |
-   |                         | order (as used by Intel processors)         |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_S16_BE`    | Signed, 16-bit audio, big-endian byte order |
-   |                         | (as used by 68k, PowerPC, Sparc)            |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_S8`        | Signed, 8 bit audio                         |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_U16_LE`    | Unsigned, 16-bit little-endian audio        |
-   +-------------------------+---------------------------------------------+
-   | :const:`AFMT_U16_BE`    | Unsigned, 16-bit big-endian audio           |
-   +-------------------------+---------------------------------------------+
-
-   Consult the OSS documentation for a full list of audio formats, and note that
-   most devices support only a subset of these formats.  Some older devices only
-   support :const:`AFMT_U8`; the most common format used today is
-   :const:`AFMT_S16_LE`.
-
-
-.. method:: oss_audio_device.setfmt(format)
-
-   Try to set the current audio format to *format*---see :meth:`getfmts` for a
-   list.  Returns the audio format that the device was set to, which may not be the
-   requested format.  May also be used to return the current audio format---do this
-   by passing an "audio format" of :const:`AFMT_QUERY`.
-
-
-.. method:: oss_audio_device.channels(nchannels)
-
-   Set the number of output channels to *nchannels*.  A value of 1 indicates
-   monophonic sound, 2 stereophonic.  Some devices may have more than 2 channels,
-   and some high-end devices may not support mono. Returns the number of channels
-   the device was set to.
-
-
-.. method:: oss_audio_device.speed(samplerate)
-
-   Try to set the audio sampling rate to *samplerate* samples per second.  Returns
-   the rate actually set.  Most sound devices don't support arbitrary sampling
-   rates.  Common rates are:
-
-   +-------+-------------------------------------------+
-   | Rate  | Description                               |
-   +=======+===========================================+
-   | 8000  | default rate for :file:`/dev/audio`       |
-   +-------+-------------------------------------------+
-   | 11025 | speech recording                          |
-   +-------+-------------------------------------------+
-   | 22050 |                                           |
-   +-------+-------------------------------------------+
-   | 44100 | CD quality audio (at 16 bits/sample and 2 |
-   |       | channels)                                 |
-   +-------+-------------------------------------------+
-   | 96000 | DVD quality audio (at 24 bits/sample)     |
-   +-------+-------------------------------------------+
-
-
-.. method:: oss_audio_device.sync()
-
-   Wait until the sound device has played every byte in its buffer.  (This happens
-   implicitly when the device is closed.)  The OSS documentation recommends closing
-   and re-opening the device rather than using :meth:`sync`.
-
-
-.. method:: oss_audio_device.reset()
-
-   Immediately stop playing or recording and return the device to a state where it
-   can accept commands.  The OSS documentation recommends closing and re-opening
-   the device after calling :meth:`reset`.
-
-
-.. method:: oss_audio_device.post()
-
-   Tell the driver that there is likely to be a pause in the output, making it
-   possible for the device to handle the pause more intelligently.  You might use
-   this after playing a spot sound effect, before waiting for user input, or before
-   doing disk I/O.
-
-The following convenience methods combine several ioctls, or one ioctl and some
-simple calculations.
-
-
-.. method:: oss_audio_device.setparameters(format, nchannels, samplerate[, strict=False])
-
-   Set the key audio sampling parameters---sample format, number of channels, and
-   sampling rate---in one method call.  *format*,  *nchannels*, and *samplerate*
-   should be as specified in the :meth:`setfmt`, :meth:`channels`, and
-   :meth:`speed`  methods.  If *strict* is true, :meth:`setparameters` checks to
-   see if each parameter was actually set to the requested value, and raises
-   :exc:`OSSAudioError` if not.  Returns a tuple (*format*, *nchannels*,
-   *samplerate*) indicating the parameter values that were actually set by the
-   device driver (i.e., the same as the return values of :meth:`setfmt`,
-   :meth:`channels`, and :meth:`speed`).
-
-   For example,  ::
-
-      (fmt, channels, rate) = dsp.setparameters(fmt, channels, rate)
-
-   is equivalent to  ::
-
-      fmt = dsp.setfmt(fmt)
-      channels = dsp.channels(channels)
-      rate = dsp.rate(rate)
-
-
-.. method:: oss_audio_device.bufsize()
-
-   Returns the size of the hardware buffer, in samples.
-
-
-.. method:: oss_audio_device.obufcount()
-
-   Returns the number of samples that are in the hardware buffer yet to be played.
-
-
-.. method:: oss_audio_device.obuffree()
-
-   Returns the number of samples that could be queued into the hardware buffer to
-   be played without blocking.
-
-Audio device objects also support several read-only attributes:
-
-
-.. attribute:: oss_audio_device.closed
-
-   Boolean indicating whether the device has been closed.
-
-
-.. attribute:: oss_audio_device.name
-
-   String containing the name of the device file.
-
-
-.. attribute:: oss_audio_device.mode
-
-   The I/O mode for the file, either ``"r"``, ``"rw"``, or ``"w"``.
-
-
-.. _mixer-device-objects:
-
-Mixer Device Objects
---------------------
-
-The mixer object provides two file-like methods:
-
-
-.. method:: oss_mixer_device.close()
-
-   This method closes the open mixer device file.  Any further attempts to use the
-   mixer after this file is closed will raise an :exc:`OSError`.
-
-
-.. method:: oss_mixer_device.fileno()
-
-   Returns the file handle number of the open mixer device file.
-
-.. versionchanged:: 3.2
-   Mixer objects also support the context management protocol.
-
-
-The remaining methods are specific to audio mixing:
-
-
-.. method:: oss_mixer_device.controls()
-
-   This method returns a bitmask specifying the available mixer controls ("Control"
-   being a specific mixable "channel", such as :const:`SOUND_MIXER_PCM` or
-   :const:`SOUND_MIXER_SYNTH`).  This bitmask indicates a subset of all available
-   mixer controls---the :const:`SOUND_MIXER_\*` constants defined at module level.
-   To determine if, for example, the current mixer object supports a PCM mixer, use
-   the following Python code::
-
-      mixer=ossaudiodev.openmixer()
-      if mixer.controls() & (1 << ossaudiodev.SOUND_MIXER_PCM):
-          # PCM is supported
-          ... code ...
-
-   For most purposes, the :const:`SOUND_MIXER_VOLUME` (master volume) and
-   :const:`SOUND_MIXER_PCM` controls should suffice---but code that uses the mixer
-   should be flexible when it comes to choosing mixer controls.  On the Gravis
-   Ultrasound, for example, :const:`SOUND_MIXER_VOLUME` does not exist.
-
-
-.. method:: oss_mixer_device.stereocontrols()
-
-   Returns a bitmask indicating stereo mixer controls.  If a bit is set, the
-   corresponding control is stereo; if it is unset, the control is either
-   monophonic or not supported by the mixer (use in combination with
-   :meth:`controls` to determine which).
-
-   See the code example for the :meth:`controls` function for an example of getting
-   data from a bitmask.
-
-
-.. method:: oss_mixer_device.reccontrols()
-
-   Returns a bitmask specifying the mixer controls that may be used to record.  See
-   the code example for :meth:`controls` for an example of reading from a bitmask.
-
-
-.. method:: oss_mixer_device.get(control)
-
-   Returns the volume of a given mixer control.  The returned volume is a 2-tuple
-   ``(left_volume,right_volume)``.  Volumes are specified as numbers from 0
-   (silent) to 100 (full volume).  If the control is monophonic, a 2-tuple is still
-   returned, but both volumes are the same.
-
-   Raises :exc:`OSSAudioError` if an invalid control is specified, or
-   :exc:`OSError` if an unsupported control is specified.
-
-
-.. method:: oss_mixer_device.set(control, (left, right))
-
-   Sets the volume for a given mixer control to ``(left,right)``. ``left`` and
-   ``right`` must be ints and between 0 (silent) and 100 (full volume).  On
-   success, the new volume is returned as a 2-tuple. Note that this may not be
-   exactly the same as the volume specified, because of the limited resolution of
-   some soundcard's mixers.
-
-   Raises :exc:`OSSAudioError` if an invalid mixer control was specified, or if the
-   specified volumes were out-of-range.
-
-
-.. method:: oss_mixer_device.get_recsrc()
-
-   This method returns a bitmask indicating which control(s) are currently being
-   used as a recording source.
-
-
-.. method:: oss_mixer_device.set_recsrc(bitmask)
-
-   Call this function to specify a recording source.  Returns a bitmask indicating
-   the new recording source (or sources) if successful; raises :exc:`OSError` if an
-   invalid source was specified.  To set the current recording source to the
-   microphone input::
-
-      mixer.setrecsrc (1 << ossaudiodev.SOUND_MIXER_MIC)
diff --git a/Doc/library/pathlib.rst b/Doc/library/pathlib.rst
index 93af07ae5ac10f..60791725c2323d 100644
--- a/Doc/library/pathlib.rst
+++ b/Doc/library/pathlib.rst
@@ -88,6 +88,17 @@ Opening a file::
    '#!/bin/bash\n'
 
 
+Exceptions
+----------
+
+.. exception:: UnsupportedOperation
+
+   An exception inheriting :exc:`NotImplementedError` that is raised when an
+   unsupported operation is called on a path object.
+
+   .. versionadded:: 3.13
+
+
 .. _pure-paths:
 
 Pure paths
@@ -292,6 +303,13 @@ Methods and properties
 
 Pure paths provide the following methods and properties:
 
+.. attribute:: PurePath.pathmod
+
+   The implementation of the :mod:`os.path` module used for low-level path
+   operations: either :mod:`posixpath` or :mod:`ntpath`.
+
+   .. versionadded:: 3.13
+
 .. attribute:: PurePath.drive
 
    A string representing the drive letter or name, if any::
@@ -421,7 +439,7 @@ Pure paths provide the following methods and properties:
 
 .. attribute:: PurePath.suffix
 
-   The file extension of the final component, if any::
+   The last dot-separated portion of the final component, if any::
 
       >>> PurePosixPath('my/library/setup.py').suffix
       '.py'
@@ -430,10 +448,11 @@ Pure paths provide the following methods and properties:
       >>> PurePosixPath('my/library').suffix
       ''
 
+   This is commonly called the file extension.
 
 .. attribute:: PurePath.suffixes
 
-   A list of the path's file extensions::
+   A list of the path's suffixes, often called file extensions::
 
       >>> PurePosixPath('my/library.tar.gar').suffixes
       ['.tar', '.gar']
@@ -546,7 +565,7 @@ Pure paths provide the following methods and properties:
       PureWindowsPath('c:/Program Files')
 
 
-.. method:: PurePath.match(pattern)
+.. method:: PurePath.match(pattern, *, case_sensitive=None)
 
    Match this path against the provided glob-style pattern.  Return ``True``
    if matching is successful, ``False`` otherwise.
@@ -569,6 +588,16 @@ Pure paths provide the following methods and properties:
       >>> PurePath('a/b.py').match('/*.py')
       False
 
+   The *pattern* may be another path object; this speeds up matching the same
+   pattern against multiple files::
+
+      >>> pattern = PurePath('*.py')
+      >>> PurePath('a/b.py').match(pattern)
+      True
+
+   .. versionchanged:: 3.12
+      Accepts an object implementing the :class:`os.PathLike` interface.
+
    As with other methods, case-sensitivity follows platform defaults::
 
       >>> PurePosixPath('b.py').match('*.PY')
@@ -576,6 +605,15 @@ Pure paths provide the following methods and properties:
       >>> PureWindowsPath('b.py').match('*.PY')
       True
 
+   Set *case_sensitive* to ``True`` or ``False`` to override this behaviour.
+
+   .. versionchanged:: 3.12
+      The *case_sensitive* parameter was added.
+
+   .. versionchanged:: 3.13
+      Support for the recursive wildcard "``**``" was added. In previous
+      versions, it acted like the non-recursive wildcard "``*``".
+
 
 .. method:: PurePath.relative_to(other, walk_up=False)
 
@@ -615,8 +653,8 @@ Pure paths provide the following methods and properties:
       are present in the path; call :meth:`~Path.resolve` first if
       necessary to resolve symlinks.
 
-   .. versionadded:: 3.12
-      The *walk_up* argument (old behavior is the same as ``walk_up=False``).
+   .. versionchanged:: 3.12
+      The *walk_up* parameter was added (old behavior is the same as ``walk_up=False``).
 
    .. deprecated-removed:: 3.12 3.14
 
@@ -736,6 +774,11 @@ calls on path objects.  There are three ways to instantiate concrete paths:
 
    *pathsegments* is specified similarly to :class:`PurePath`.
 
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` on Windows. In previous versions,
+      :exc:`NotImplementedError` was raised instead.
+
+
 .. class:: WindowsPath(*pathsegments)
 
    A subclass of :class:`Path` and :class:`PureWindowsPath`, this class
@@ -746,6 +789,11 @@ calls on path objects.  There are three ways to instantiate concrete paths:
 
    *pathsegments* is specified similarly to :class:`PurePath`.
 
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` on non-Windows platforms. In previous
+      versions, :exc:`NotImplementedError` was raised instead.
+
+
 You can only instantiate the class flavour that corresponds to your system
 (allowing system calls on non-compatible path flavours could lead to
 bugs or failures in your application)::
@@ -762,7 +810,7 @@ bugs or failures in your application)::
      File "<stdin>", line 1, in <module>
      File "pathlib.py", line 798, in __new__
        % (cls.__name__,))
-   NotImplementedError: cannot instantiate 'WindowsPath' on your system
+   UnsupportedOperation: cannot instantiate 'WindowsPath' on your system
 
 
 Methods
@@ -805,6 +853,42 @@ call fails (for example because the path doesn't exist).
    .. versionadded:: 3.5
 
 
+.. classmethod:: Path.from_uri(uri)
+
+   Return a new path object from parsing a 'file' URI conforming to
+   :rfc:`8089`. For example::
+
+       >>> p = Path.from_uri('file:///etc/hosts')
+       PosixPath('/etc/hosts')
+
+   On Windows, DOS device and UNC paths may be parsed from URIs::
+
+       >>> p = Path.from_uri('file:///c:/windows')
+       WindowsPath('c:/windows')
+       >>> p = Path.from_uri('file://server/share')
+       WindowsPath('//server/share')
+
+   Several variant forms are supported::
+
+       >>> p = Path.from_uri('file:////server/share')
+       WindowsPath('//server/share')
+       >>> p = Path.from_uri('file://///server/share')
+       WindowsPath('//server/share')
+       >>> p = Path.from_uri('file:c:/windows')
+       WindowsPath('c:/windows')
+       >>> p = Path.from_uri('file:/c|/windows')
+       WindowsPath('c:/windows')
+
+   :exc:`ValueError` is raised if the URI does not start with ``file:``, or
+   the parsed path isn't absolute.
+
+   :func:`os.fsdecode` is used to decode percent-escaped byte sequences, and
+   so file URIs are not portable across machines with different
+   :ref:`filesystem encodings <filesystem-encoding>`.
+
+   .. versionadded:: 3.13
+
+
 .. method:: Path.stat(*, follow_symlinks=True)
 
    Return a :class:`os.stat_result` object containing information about this path, like :func:`os.stat`.
@@ -880,7 +964,7 @@ call fails (for example because the path doesn't exist).
    .. versionadded:: 3.5
 
 
-.. method:: Path.glob(pattern, *, case_sensitive=None)
+.. method:: Path.glob(pattern, *, case_sensitive=None, follow_symlinks=None)
 
    Glob the given relative *pattern* in the directory represented by this path,
    yielding all matching files (of any kind)::
@@ -901,14 +985,23 @@ call fails (for example because the path doesn't exist).
        PosixPath('setup.py'),
        PosixPath('test_pathlib.py')]
 
+   .. note::
+      Using the "``**``" pattern in large directory trees may consume
+      an inordinate amount of time.
+
+   .. tip::
+      Set *follow_symlinks* to ``True`` or ``False`` to improve performance
+      of recursive globbing.
+
    By default, or when the *case_sensitive* keyword-only argument is set to
    ``None``, this method matches paths using platform-specific casing rules:
    typically, case-sensitive on POSIX, and case-insensitive on Windows.
    Set *case_sensitive* to ``True`` or ``False`` to override this behaviour.
 
-   .. note::
-      Using the "``**``" pattern in large directory trees may consume
-      an inordinate amount of time.
+   By default, or when the *follow_symlinks* keyword-only argument is set to
+   ``None``, this method follows symlinks except when expanding "``**``"
+   wildcards. Set *follow_symlinks* to ``True`` to always follow symlinks, or
+   ``False`` to treat all symlinks as files.
 
    .. audit-event:: pathlib.Path.glob self,pattern pathlib.Path.glob
 
@@ -916,32 +1009,62 @@ call fails (for example because the path doesn't exist).
       Return only directories if *pattern* ends with a pathname components
       separator (:data:`~os.sep` or :data:`~os.altsep`).
 
-   .. versionadded:: 3.12
-      The *case_sensitive* argument.
+   .. versionchanged:: 3.12
+      The *case_sensitive* parameter was added.
+
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
+
+   .. versionchanged:: 3.13
+      Emits :exc:`FutureWarning` if the pattern ends with "``**``". In a
+      future Python release, patterns with this ending will match both files
+      and directories. Add a trailing slash to match only directories.
 
-.. method:: Path.group()
+.. method:: Path.group(*, follow_symlinks=True)
 
-   Return the name of the group owning the file.  :exc:`KeyError` is raised
+   Return the name of the group owning the file. :exc:`KeyError` is raised
    if the file's gid isn't found in the system database.
 
+   This method normally follows symlinks; to get the group of the symlink, add
+   the argument ``follow_symlinks=False``.
+
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if the :mod:`grp` module is not
+      available. In previous versions, :exc:`NotImplementedError` was raised.
+
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
+
 
-.. method:: Path.is_dir()
+.. method:: Path.is_dir(*, follow_symlinks=True)
 
-   Return ``True`` if the path points to a directory (or a symbolic link
-   pointing to a directory), ``False`` if it points to another kind of file.
+   Return ``True`` if the path points to a directory, ``False`` if it points
+   to another kind of file.
 
    ``False`` is also returned if the path doesn't exist or is a broken symlink;
    other errors (such as permission errors) are propagated.
 
+   This method normally follows symlinks; to exclude symlinks to directories,
+   add the argument ``follow_symlinks=False``.
 
-.. method:: Path.is_file()
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
+
+
+.. method:: Path.is_file(*, follow_symlinks=True)
 
-   Return ``True`` if the path points to a regular file (or a symbolic link
-   pointing to a regular file), ``False`` if it points to another kind of file.
+   Return ``True`` if the path points to a regular file, ``False`` if it
+   points to another kind of file.
 
    ``False`` is also returned if the path doesn't exist or is a broken symlink;
    other errors (such as permission errors) are propagated.
 
+   This method normally follows symlinks; to exclude symlinks, add the
+   argument ``follow_symlinks=False``.
+
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
+
 
 .. method:: Path.is_junction()
 
@@ -1177,11 +1300,21 @@ call fails (for example because the path doesn't exist).
       '#!/usr/bin/env python3\n'
 
 
-.. method:: Path.owner()
+.. method:: Path.owner(*, follow_symlinks=True)
 
-   Return the name of the user owning the file.  :exc:`KeyError` is raised
+   Return the name of the user owning the file. :exc:`KeyError` is raised
    if the file's uid isn't found in the system database.
 
+   This method normally follows symlinks; to get the owner of the symlink, add
+   the argument ``follow_symlinks=False``.
+
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if the :mod:`pwd` module is not
+      available. In previous versions, :exc:`NotImplementedError` was raised.
+
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
+
 
 .. method:: Path.read_bytes()
 
@@ -1196,7 +1329,7 @@ call fails (for example because the path doesn't exist).
    .. versionadded:: 3.5
 
 
-.. method:: Path.read_text(encoding=None, errors=None)
+.. method:: Path.read_text(encoding=None, errors=None, newline=None)
 
    Return the decoded contents of the pointed-to file as a string::
 
@@ -1211,6 +1344,8 @@ call fails (for example because the path doesn't exist).
 
    .. versionadded:: 3.5
 
+   .. versionchanged:: 3.13
+      The *newline* parameter was added.
 
 .. method:: Path.readlink()
 
@@ -1224,6 +1359,10 @@ call fails (for example because the path doesn't exist).
 
    .. versionadded:: 3.9
 
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if :func:`os.readlink` is not
+      available. In previous versions, :exc:`NotImplementedError` was raised.
+
 
 .. method:: Path.rename(target)
 
@@ -1295,16 +1434,20 @@ call fails (for example because the path doesn't exist).
       >>> p.resolve()
       PosixPath('/home/antoine/pathlib/setup.py')
 
-   If the path doesn't exist and *strict* is ``True``, :exc:`FileNotFoundError`
-   is raised.  If *strict* is ``False``, the path is resolved as far as possible
-   and any remainder is appended without checking whether it exists.  If an
-   infinite loop is encountered along the resolution path, :exc:`RuntimeError`
-   is raised.
+   If a path doesn't exist or a symlink loop is encountered, and *strict* is
+   ``True``, :exc:`OSError` is raised.  If *strict* is ``False``, the path is
+   resolved as far as possible and any remainder is appended without checking
+   whether it exists.
 
-   .. versionadded:: 3.6
-      The *strict* argument (pre-3.6 behavior is strict).
+   .. versionchanged:: 3.6
+      The *strict* parameter was added (pre-3.6 behavior is strict).
 
-.. method:: Path.rglob(pattern, *, case_sensitive=None)
+   .. versionchanged:: 3.13
+      Symlink loops are treated like other errors: :exc:`OSError` is raised in
+      strict mode, and no exception is raised in non-strict mode. In previous
+      versions, :exc:`RuntimeError` is raised no matter the value of *strict*.
+
+.. method:: Path.rglob(pattern, *, case_sensitive=None, follow_symlinks=None)
 
    Glob the given relative *pattern* recursively.  This is like calling
    :func:`Path.glob` with "``**/``" added in front of the *pattern*, where
@@ -1322,14 +1465,22 @@ call fails (for example because the path doesn't exist).
    typically, case-sensitive on POSIX, and case-insensitive on Windows.
    Set *case_sensitive* to ``True`` or ``False`` to override this behaviour.
 
+   By default, or when the *follow_symlinks* keyword-only argument is set to
+   ``None``, this method follows symlinks except when expanding "``**``"
+   wildcards. Set *follow_symlinks* to ``True`` to always follow symlinks, or
+   ``False`` to treat all symlinks as files.
+
    .. audit-event:: pathlib.Path.rglob self,pattern pathlib.Path.rglob
 
    .. versionchanged:: 3.11
       Return only directories if *pattern* ends with a pathname components
       separator (:data:`~os.sep` or :data:`~os.altsep`).
 
-   .. versionadded:: 3.12
-      The *case_sensitive* argument.
+   .. versionchanged:: 3.12
+      The *case_sensitive* parameter was added.
+
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
 
 .. method:: Path.rmdir()
 
@@ -1378,6 +1529,11 @@ call fails (for example because the path doesn't exist).
       The order of arguments (link, target) is the reverse
       of :func:`os.symlink`'s.
 
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if :func:`os.symlink` is not
+      available. In previous versions, :exc:`NotImplementedError` was raised.
+
+
 .. method:: Path.hardlink_to(target)
 
    Make this path a hard link to the same file as *target*.
@@ -1388,6 +1544,10 @@ call fails (for example because the path doesn't exist).
 
    .. versionadded:: 3.10
 
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if :func:`os.link` is not
+      available. In previous versions, :exc:`NotImplementedError` was raised.
+
 
 .. method:: Path.touch(mode=0o666, exist_ok=True)
 
diff --git a/Doc/library/pdb.rst b/Doc/library/pdb.rst
index ef52370bff8058..2495dcf50bb17f 100644
--- a/Doc/library/pdb.rst
+++ b/Doc/library/pdb.rst
@@ -175,8 +175,8 @@ slightly different way:
 
 .. function:: pm()
 
-   Enter post-mortem debugging of the traceback found in
-   :data:`sys.last_traceback`.
+   Enter post-mortem debugging of the exception found in
+   :data:`sys.last_exc`.
 
 
 The ``run*`` functions and :func:`set_trace` are aliases for instantiating the
@@ -252,6 +252,10 @@ change a variable or call a function.  When an exception occurs in such a
 statement, the exception name is printed but the debugger's state is not
 changed.
 
+.. versionchanged:: 3.13
+   Expressions/Statements whose prefix is a pdb command are now correctly
+   identified and executed.
+
 The debugger supports :ref:`aliases <debugger-aliases>`.  Aliases can have
 parameters which allows one a certain level of adaptability to the context under
 examination.
@@ -566,17 +570,34 @@ can be overridden by the local file.
 
    Start an interactive interpreter (using the :mod:`code` module) whose global
    namespace contains all the (global and local) names found in the current
-   scope.
+   scope. Use ``exit()`` or ``quit()`` to exit the interpreter and return to
+   the debugger.
+
+   .. note::
+
+      Because interact creates a new global namespace with the current global
+      and local namespace for execution, assignment to variables will not
+      affect the original namespaces.
+      However, modification to the mutable objects will be reflected in the
+      original namespaces.
 
    .. versionadded:: 3.2
 
+   .. versionadded:: 3.13
+      ``exit()`` and ``quit()`` can be used to exit :pdbcmd:`interact`
+      command.
+
+   .. versionchanged:: 3.13
+      :pdbcmd:`interact` directs its output to the debugger's
+      output channel rather than :data:`sys.stderr`.
+
 .. _debugger-aliases:
 
 .. pdbcommand:: alias [name [command]]
 
    Create an alias called *name* that executes *command*.  The *command* must
    *not* be enclosed in quotes.  Replaceable parameters can be indicated by
-   ``%1``, ``%2``, and so on, while ``%*`` is replaced by all the parameters.
+   ``%1``, ``%2``, ... and ``%9``, while ``%*`` is replaced by all the parameters.
    If *command* is omitted, the current alias for *name* is shown. If no
    arguments are given, all aliases are listed.
 
@@ -639,6 +660,55 @@ can be overridden by the local file.
 
    Print the return value for the last return of the current function.
 
+.. pdbcommand:: exceptions [excnumber]
+
+   List or jump between chained exceptions.
+
+   When using ``pdb.pm()``  or ``Pdb.post_mortem(...)`` with a chained exception
+   instead of a traceback, it allows the user to move between the
+   chained exceptions using ``exceptions`` command to list exceptions, and
+   ``exception <number>`` to switch to that exception.
+
+
+   Example::
+
+        def out():
+            try:
+                middle()
+            except Exception as e:
+                raise ValueError("reraise middle() error") from e
+
+        def middle():
+            try:
+                return inner(0)
+            except Exception as e:
+                raise ValueError("Middle fail")
+
+        def inner(x):
+            1 / x
+
+         out()
+
+   calling ``pdb.pm()`` will allow to move between exceptions::
+
+    > example.py(5)out()
+    -> raise ValueError("reraise middle() error") from e
+
+    (Pdb) exceptions
+      0 ZeroDivisionError('division by zero')
+      1 ValueError('Middle fail')
+    > 2 ValueError('reraise middle() error')
+
+    (Pdb) exceptions 0
+    > example.py(16)inner()
+    -> 1 / x
+
+    (Pdb) up
+    > example.py(10)middle()
+    -> return inner(0)
+
+   .. versionadded:: 3.13
+
 .. rubric:: Footnotes
 
 .. [1] Whether a frame is considered to originate in a certain module
diff --git a/Doc/library/pickle.rst b/Doc/library/pickle.rst
index 79476b04cd914d..93387fb0b45038 100644
--- a/Doc/library/pickle.rst
+++ b/Doc/library/pickle.rst
@@ -125,7 +125,7 @@ Data stream format
 
 The data format used by :mod:`pickle` is Python-specific.  This has the
 advantage that there are no restrictions imposed by external standards such as
-JSON or XDR (which can't represent pointer sharing); however it means that
+JSON (which can't represent pointer sharing); however it means that
 non-Python programs may not be able to reconstruct pickled Python objects.
 
 By default, the :mod:`pickle` data format uses a relatively compact binary
@@ -494,7 +494,8 @@ What can be pickled and unpickled?
 
 The following types can be pickled:
 
-* ``None``, ``True``, and ``False``;
+* built-in constants (``None``, ``True``, ``False``, ``Ellipsis``, and
+  ``NotImplemented``);
 
 * integers, floating-point numbers, complex numbers;
 
diff --git a/Doc/library/pickletools.rst b/Doc/library/pickletools.rst
index 480f4a6d320815..41930f8cbe8412 100644
--- a/Doc/library/pickletools.rst
+++ b/Doc/library/pickletools.rst
@@ -17,6 +17,8 @@ are useful for Python core developers who are working on the :mod:`pickle`;
 ordinary users of the :mod:`pickle` module probably won't find the
 :mod:`pickletools` module relevant.
 
+.. _pickletools-cli:
+
 Command line usage
 ------------------
 
@@ -51,24 +53,24 @@ Command line options
 
 .. program:: pickletools
 
-.. cmdoption:: -a, --annotate
+.. option:: -a, --annotate
 
    Annotate each line with a short opcode description.
 
-.. cmdoption:: -o, --output=<file>
+.. option:: -o, --output=<file>
 
    Name of a file where the output should be written.
 
-.. cmdoption:: -l, --indentlevel=<num>
+.. option:: -l, --indentlevel=<num>
 
    The number of blanks by which to indent a new MARK level.
 
-.. cmdoption:: -m, --memo
+.. option:: -m, --memo
 
    When multiple objects are disassembled, preserve memo between
    disassemblies.
 
-.. cmdoption:: -p, --preamble=<preamble>
+.. option:: -p, --preamble=<preamble>
 
    When more than one pickle file are specified, print given preamble
    before each disassembly.
diff --git a/Doc/library/pipes.rst b/Doc/library/pipes.rst
deleted file mode 100644
index 471ae0dbc9768a..00000000000000
--- a/Doc/library/pipes.rst
+++ /dev/null
@@ -1,103 +0,0 @@
-:mod:`pipes` --- Interface to shell pipelines
-=============================================
-
-.. module:: pipes
-   :platform: Unix
-   :synopsis: A Python interface to Unix shell pipelines.
-   :deprecated:
-
-.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
-
-**Source code:** :source:`Lib/pipes.py`
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`pipes` module is deprecated
-   (see :pep:`PEP 594 <594#pipes>` for details).
-   Please use the :mod:`subprocess` module instead.
-
---------------
-
-The :mod:`pipes` module defines a class to abstract the concept of a *pipeline*
---- a sequence of converters from one file to  another.
-
-Because the module uses :program:`/bin/sh` command lines, a POSIX or compatible
-shell for :func:`os.system` and :func:`os.popen` is required.
-
-.. availability:: Unix, not VxWorks.
-
-The :mod:`pipes` module defines the following class:
-
-
-.. class:: Template()
-
-   An abstraction of a pipeline.
-
-Example::
-
-   >>> import pipes
-   >>> t = pipes.Template()
-   >>> t.append('tr a-z A-Z', '--')
-   >>> f = t.open('pipefile', 'w')
-   >>> f.write('hello world')
-   >>> f.close()
-   >>> open('pipefile').read()
-   'HELLO WORLD'
-
-
-.. _template-objects:
-
-Template Objects
-----------------
-
-Template objects following methods:
-
-
-.. method:: Template.reset()
-
-   Restore a pipeline template to its initial state.
-
-
-.. method:: Template.clone()
-
-   Return a new, equivalent, pipeline template.
-
-
-.. method:: Template.debug(flag)
-
-   If *flag* is true, turn debugging on. Otherwise, turn debugging off. When
-   debugging is on, commands to be executed are printed, and the shell is given
-   ``set -x`` command to be more verbose.
-
-
-.. method:: Template.append(cmd, kind)
-
-   Append a new action at the end. The *cmd* variable must be a valid bourne shell
-   command. The *kind* variable consists of two letters.
-
-   The first letter can be either of ``'-'`` (which means the command reads its
-   standard input), ``'f'`` (which means the commands reads a given file on the
-   command line) or ``'.'`` (which means the commands reads no input, and hence
-   must be first.)
-
-   Similarly, the second letter can be either of ``'-'`` (which means  the command
-   writes to standard output), ``'f'`` (which means the  command writes a file on
-   the command line) or ``'.'`` (which means the command does not write anything,
-   and hence must be last.)
-
-
-.. method:: Template.prepend(cmd, kind)
-
-   Add a new action at the beginning. See :meth:`append` for explanations of the
-   arguments.
-
-
-.. method:: Template.open(file, mode)
-
-   Return a file-like object, open to *file*, but read from or written to by the
-   pipeline.  Note that only one of ``'r'``, ``'w'`` may be given.
-
-
-.. method:: Template.copy(infile, outfile)
-
-   Copy *infile* to *outfile* through the pipe.
-
diff --git a/Doc/library/platform.rst b/Doc/library/platform.rst
index 69c4dfc422c98e..ec2a7ebd5d6e0b 100644
--- a/Doc/library/platform.rst
+++ b/Doc/library/platform.rst
@@ -46,7 +46,7 @@ Cross Platform
       universal files containing multiple architectures.
 
       To get at the "64-bitness" of the current interpreter, it is more
-      reliable to query the :attr:`sys.maxsize` attribute::
+      reliable to query the :data:`sys.maxsize` attribute::
 
          is_64bits = sys.maxsize > 2**32
 
diff --git a/Doc/library/poplib.rst b/Doc/library/poplib.rst
index d8618ce9b60bba..943eb21f6eec02 100644
--- a/Doc/library/poplib.rst
+++ b/Doc/library/poplib.rst
@@ -77,21 +77,14 @@ The :mod:`poplib` module provides two classes:
    .. versionchanged:: 3.4
       The class now supports hostname check with
       :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
-
-   .. deprecated:: 3.6
-
-       *keyfile* and *certfile* are deprecated in favor of *context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
+      :const:`ssl.HAS_SNI`).
 
    .. versionchanged:: 3.9
       If the *timeout* parameter is set to be zero, it will raise a
       :class:`ValueError` to prevent the creation of a non-blocking socket.
 
    .. versionchanged:: 3.12
-       The deprecated *keyfile* and *certfile* parameters have been removed.
+      The deprecated *keyfile* and *certfile* parameters have been removed.
 
 One exception is defined as an attribute of the :mod:`poplib` module:
 
@@ -155,7 +148,7 @@ A :class:`POP3` instance has the following methods:
 .. method:: POP3.pass_(password)
 
    Send password, response includes message count and mailbox size. Note: the
-   mailbox on the server is locked until :meth:`~poplib.quit` is called.
+   mailbox on the server is locked until :meth:`~POP3.quit` is called.
 
 
 .. method:: POP3.apop(user, secret)
@@ -247,7 +240,7 @@ A :class:`POP3` instance has the following methods:
 
    This method supports hostname checking via
    :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-   :data:`ssl.HAS_SNI`).
+   :const:`ssl.HAS_SNI`).
 
    .. versionadded:: 3.4
 
diff --git a/Doc/library/posix.rst b/Doc/library/posix.rst
index 0413f9d02a8d57..5871574b442667 100644
--- a/Doc/library/posix.rst
+++ b/Doc/library/posix.rst
@@ -11,6 +11,8 @@ This module provides access to operating system functionality that is
 standardized by the C Standard and the POSIX standard (a thinly disguised Unix
 interface).
 
+.. availability:: Unix.
+
 .. index:: pair: module; os
 
 **Do not import this module directly.**  Instead, import the module :mod:`os`,
diff --git a/Doc/library/pprint.rst b/Doc/library/pprint.rst
index d8269ef48cb36a..e883acd67d6c72 100644
--- a/Doc/library/pprint.rst
+++ b/Doc/library/pprint.rst
@@ -45,7 +45,7 @@ The :mod:`pprint` module defines one class:
    several keyword parameters.
 
    *stream* (default ``sys.stdout``) is a :term:`file-like object` to
-   which the output will be written by calling its :meth:`write` method.
+   which the output will be written by calling its :meth:`!write` method.
    If both *stream* and ``sys.stdout`` are ``None``, then
    :meth:`~PrettyPrinter.pprint` silently returns.
 
diff --git a/Doc/library/profile.rst b/Doc/library/profile.rst
index 723f927135a0f4..cc059b66fcb84b 100644
--- a/Doc/library/profile.rst
+++ b/Doc/library/profile.rst
@@ -82,8 +82,8 @@ the following::
 
 The first line indicates that 214 calls were monitored.  Of those calls, 207
 were :dfn:`primitive`, meaning that the call was not induced via recursion. The
-next line: ``Ordered by: cumulative time``, indicates that the text string in the
-far right column was used to sort the output. The column headings include:
+next line: ``Ordered by: cumulative time`` indicates the output is sorted
+by the ``cumtime`` values. The column headings include:
 
 ncalls
    for the number of calls.
@@ -121,6 +121,8 @@ results to a file by specifying a filename to the :func:`run` function::
 The :class:`pstats.Stats` class reads profile results from a file and formats
 them in various ways.
 
+.. _profile-cli:
+
 The files :mod:`cProfile` and :mod:`profile` can also be invoked as a script to
 profile another script.  For example::
 
@@ -133,11 +135,11 @@ the output by. This only applies when ``-o`` is not supplied.
 
 ``-m`` specifies that a module is being profiled instead of a script.
 
-   .. versionadded:: 3.7
-      Added the ``-m`` option to :mod:`cProfile`.
+.. versionadded:: 3.7
+   Added the ``-m`` option to :mod:`cProfile`.
 
-   .. versionadded:: 3.8
-      Added the ``-m`` option to :mod:`profile`.
+.. versionadded:: 3.8
+   Added the ``-m`` option to :mod:`profile`.
 
 The :mod:`pstats` module's :class:`~pstats.Stats` class has a variety of methods
 for manipulating and printing the data saved into a profile results file::
diff --git a/Doc/library/pty.rst b/Doc/library/pty.rst
index 7f4da41e93802d..af9378464edb9f 100644
--- a/Doc/library/pty.rst
+++ b/Doc/library/pty.rst
@@ -16,6 +16,8 @@ The :mod:`pty` module defines operations for handling the pseudo-terminal
 concept: starting another process and being able to write to and read from its
 controlling terminal programmatically.
 
+.. availability:: Unix.
+
 Pseudo-terminal handling is highly platform dependent. This code is mainly
 tested on Linux, FreeBSD, and macOS (it is supposed to work on other POSIX
 platforms but it's not been thoroughly tested).
@@ -71,7 +73,7 @@ The :mod:`pty` module defines the following functions:
 
    Return the exit status value from :func:`os.waitpid` on the child process.
 
-   :func:`waitstatus_to_exitcode` can be used to convert the exit status into
+   :func:`os.waitstatus_to_exitcode` can be used to convert the exit status into
    an exit code.
 
    .. audit-event:: pty.spawn argv pty.spawn
diff --git a/Doc/library/pwd.rst b/Doc/library/pwd.rst
index 7cafc66fd7e93c..dbe68cd14ec4d4 100644
--- a/Doc/library/pwd.rst
+++ b/Doc/library/pwd.rst
@@ -10,7 +10,7 @@
 This module provides access to the Unix user account and password database.  It
 is available on all Unix versions.
 
-.. include:: ../includes/wasm-notavail.rst
+.. availability:: Unix, not Emscripten, not WASI.
 
 Password database entries are reported as a tuple-like object, whose attributes
 correspond to the members of the ``passwd`` structure (Attribute field below,
@@ -39,16 +39,13 @@ raised if the entry asked for cannot be found.
 
 .. note::
 
-   .. index:: pair: module; crypt
-
    In traditional Unix the field ``pw_passwd`` usually contains a password
-   encrypted with a DES derived algorithm (see module :mod:`crypt`).  However most
+   encrypted with a DES derived algorithm.  However most
    modern unices  use a so-called *shadow password* system.  On those unices the
    *pw_passwd* field only contains an asterisk (``'*'``) or the  letter ``'x'``
    where the encrypted password is stored in a file :file:`/etc/shadow` which is
    not world readable.  Whether the *pw_passwd* field contains anything useful is
-   system-dependent.  If available, the :mod:`spwd` module should be used where
-   access to the encrypted password is required.
+   system-dependent.
 
 It defines the following items:
 
@@ -72,7 +69,3 @@ It defines the following items:
 
    Module :mod:`grp`
       An interface to the group database, similar to this.
-
-   Module :mod:`spwd`
-      An interface to the shadow password database, similar to this.
-
diff --git a/Doc/library/py_compile.rst b/Doc/library/py_compile.rst
index 69b93a3bdfcb26..38c416f9ad0305 100644
--- a/Doc/library/py_compile.rst
+++ b/Doc/library/py_compile.rst
@@ -125,6 +125,7 @@ byte-code cache files in the directory containing the source code.
       This option is useful when the ``.pycs`` are kept up to date by some
       system external to Python like a build system.
 
+.. _py_compile-cli:
 
 Command-Line Interface
 ----------------------
@@ -138,13 +139,13 @@ not be compiled.
 
 .. program:: python -m py_compile
 
-.. cmdoption:: <file> ... <fileN>
-               -
+.. option:: <file> ... <fileN>
+            -
 
    Positional arguments are files to compile.  If ``-`` is the only
    parameter, the list of files is taken from standard input.
 
-.. cmdoption:: -q, --quiet
+.. option:: -q, --quiet
 
    Suppress errors output.
 
diff --git a/Doc/library/python.rst b/Doc/library/python.rst
index f39613f572884f..610435999d9f48 100644
--- a/Doc/library/python.rst
+++ b/Doc/library/python.rst
@@ -12,6 +12,7 @@ overview:
 .. toctree::
 
    sys.rst
+   sys.monitoring.rst
    sysconfig.rst
    builtins.rst
    __main__.rst
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
index b7510b93d75427..251ec8ca0021a6 100644
--- a/Doc/library/re.rst
+++ b/Doc/library/re.rst
@@ -176,7 +176,7 @@ The special characters are:
   ``x*+``, ``x++`` and ``x?+`` are equivalent to ``(?>x*)``, ``(?>x+)``
   and ``(?>x?)`` correspondingly.
 
-   .. versionadded:: 3.11
+  .. versionadded:: 3.11
 
 .. index::
    single: {} (curly brackets); in regular expressions
@@ -501,6 +501,8 @@ The special characters are:
       in the ASCII range (``b'\x00'``-``b'\x7f'``).
 
 
+.. _re-special-sequences:
+
 The special sequences consist of ``'\'`` and a character from the list below.
 If the ordinary character is not an ASCII digit or an ASCII letter, then the
 resulting RE will match the second character.  For example, ``\$`` matches the
@@ -632,8 +634,8 @@ character ``'$'``.
    single: \x; in regular expressions
    single: \\; in regular expressions
 
-Most of the standard escapes supported by Python string literals are also
-accepted by the regular expression parser::
+Most of the :ref:`escape sequences <escape-sequences>` supported by Python
+string literals are also accepted by the regular expression parser::
 
    \a      \b      \f      \n
    \N      \r      \t      \u
@@ -658,7 +660,7 @@ three digits in length.
    Unknown escapes consisting of ``'\'`` and an ASCII letter now are errors.
 
 .. versionchanged:: 3.8
-   The ``'\N{name}'`` escape sequence has been added. As in string literals,
+   The :samp:`'\\N\\{{name}\\}'` escape sequence has been added. As in string literals,
    it expands to the named Unicode character (e.g. ``'\N{EM DASH}'``).
 
 
@@ -779,6 +781,17 @@ Flags
    Corresponds to the inline flag ``(?s)``.
 
 
+.. data:: U
+          UNICODE
+
+   In Python 2, this flag made :ref:`special sequences <re-special-sequences>`
+   include Unicode characters in matches. Since Python 3, Unicode characters
+   are matched by default.
+
+   See :const:`A` for restricting matching on ASCII characters instead.
+
+   This flag is only kept for backward compatibility.
+
 .. data:: X
           VERBOSE
 
@@ -843,18 +856,17 @@ Functions
 .. function:: search(pattern, string, flags=0)
 
    Scan through *string* looking for the first location where the regular expression
-   *pattern* produces a match, and return a corresponding :ref:`match object
-   <match-objects>`.  Return ``None`` if no position in the string matches the
-   pattern; note that this is different from finding a zero-length match at some
-   point in the string.
+   *pattern* produces a match, and return a corresponding :class:`~re.Match`. Return
+   ``None`` if no position in the string matches the pattern; note that this is
+   different from finding a zero-length match at some point in the string.
 
 
 .. function:: match(pattern, string, flags=0)
 
    If zero or more characters at the beginning of *string* match the regular
-   expression *pattern*, return a corresponding :ref:`match object
-   <match-objects>`.  Return ``None`` if the string does not match the pattern;
-   note that this is different from a zero-length match.
+   expression *pattern*, return a corresponding :class:`~re.Match`.  Return
+   ``None`` if the string does not match the pattern; note that this is
+   different from a zero-length match.
 
    Note that even in :const:`MULTILINE` mode, :func:`re.match` will only match
    at the beginning of the string and not at the beginning of each line.
@@ -866,9 +878,8 @@ Functions
 .. function:: fullmatch(pattern, string, flags=0)
 
    If the whole *string* matches the regular expression *pattern*, return a
-   corresponding :ref:`match object <match-objects>`.  Return ``None`` if the
-   string does not match the pattern; note that this is different from a
-   zero-length match.
+   corresponding :class:`~re.Match`.  Return ``None`` if the string does not match
+   the pattern; note that this is different from a zero-length match.
 
    .. versionadded:: 3.4
 
@@ -885,7 +896,7 @@ Functions
       ['Words', 'words', 'words', '']
       >>> re.split(r'(\W+)', 'Words, words, words.')
       ['Words', ', ', 'words', ', ', 'words', '.', '']
-      >>> re.split(r'\W+', 'Words, words, words.', 1)
+      >>> re.split(r'\W+', 'Words, words, words.', maxsplit=1)
       ['Words', 'words, words.']
       >>> re.split('[a-f]+', '0a3B9', flags=re.IGNORECASE)
       ['0', '3', '9']
@@ -916,6 +927,11 @@ Functions
    .. versionchanged:: 3.7
       Added support of splitting on a pattern that could match an empty string.
 
+   .. deprecated:: 3.13
+      Passing *maxsplit* and *flags* as positional arguments is deprecated.
+      In future Python versions they will be
+      :ref:`keyword-only parameters <keyword-only_parameter>`.
+
 
 .. function:: findall(pattern, string, flags=0)
 
@@ -941,7 +957,7 @@ Functions
 
 .. function:: finditer(pattern, string, flags=0)
 
-   Return an :term:`iterator` yielding :ref:`match objects <match-objects>` over
+   Return an :term:`iterator` yielding :class:`~re.Match` objects over
    all non-overlapping matches for the RE *pattern* in *string*.  The *string*
    is scanned left-to-right, and matches are returned in the order found.  Empty
    matches are included in the result.
@@ -969,8 +985,8 @@ Functions
       'static PyObject*\npy_myfunc(void)\n{'
 
    If *repl* is a function, it is called for every non-overlapping occurrence of
-   *pattern*.  The function takes a single :ref:`match object <match-objects>`
-   argument, and returns the replacement string.  For example::
+   *pattern*.  The function takes a single :class:`~re.Match` argument, and returns
+   the replacement string.  For example::
 
       >>> def dashrepl(matchobj):
       ...     if matchobj.group(0) == '-': return ' '
@@ -981,7 +997,7 @@ Functions
       >>> re.sub(r'\sAND\s', ' & ', 'Baked Beans And Spam', flags=re.IGNORECASE)
       'Baked Beans & Spam'
 
-   The pattern may be a string or a :ref:`pattern object <re-objects>`.
+   The pattern may be a string or a :class:`~re.Pattern`.
 
    The optional argument *count* is the maximum number of pattern occurrences to be
    replaced; *count* must be a non-negative integer.  If omitted or zero, all
@@ -1014,8 +1030,6 @@ Functions
    .. versionchanged:: 3.7
       Unknown escapes in *repl* consisting of ``'\'`` and an ASCII letter
       now are errors.
-
-   .. versionchanged:: 3.7
       Empty matches for the pattern are replaced when adjacent to a previous
       non-empty match.
 
@@ -1024,18 +1038,17 @@ Functions
       In :class:`bytes` replacement strings, group *name* can only contain bytes
       in the ASCII range (``b'\x00'``-``b'\x7f'``).
 
+   .. deprecated:: 3.13
+      Passing *count* and *flags* as positional arguments is deprecated.
+      In future Python versions they will be
+      :ref:`keyword-only parameters <keyword-only_parameter>`.
+
 
 .. function:: subn(pattern, repl, string, count=0, flags=0)
 
    Perform the same operation as :func:`sub`, but return a tuple ``(new_string,
    number_of_subs_made)``.
 
-   .. versionchanged:: 3.1
-      Added the optional flags argument.
-
-   .. versionchanged:: 3.5
-      Unmatched groups are replaced with an empty string.
-
 
 .. function:: escape(pattern)
 
@@ -1116,16 +1129,20 @@ Exceptions
 Regular Expression Objects
 --------------------------
 
-Compiled regular expression objects support the following methods and
-attributes:
+.. class:: Pattern
+
+   Compiled regular expression object returned by :func:`re.compile`.
+
+   .. versionchanged:: 3.9
+      :py:class:`re.Pattern` supports ``[]`` to indicate a Unicode (str) or bytes pattern.
+      See :ref:`types-genericalias`.
 
 .. method:: Pattern.search(string[, pos[, endpos]])
 
    Scan through *string* looking for the first location where this regular
-   expression produces a match, and return a corresponding :ref:`match object
-   <match-objects>`.  Return ``None`` if no position in the string matches the
-   pattern; note that this is different from finding a zero-length match at some
-   point in the string.
+   expression produces a match, and return a corresponding :class:`~re.Match`.
+   Return ``None`` if no position in the string matches the pattern; note that
+   this is different from finding a zero-length match at some point in the string.
 
    The optional second parameter *pos* gives an index in the string where the
    search is to start; it defaults to ``0``.  This is not completely equivalent to
@@ -1149,9 +1166,9 @@ attributes:
 .. method:: Pattern.match(string[, pos[, endpos]])
 
    If zero or more characters at the *beginning* of *string* match this regular
-   expression, return a corresponding :ref:`match object <match-objects>`.
-   Return ``None`` if the string does not match the pattern; note that this is
-   different from a zero-length match.
+   expression, return a corresponding :class:`~re.Match`. Return ``None`` if the
+   string does not match the pattern; note that this is different from a
+   zero-length match.
 
    The optional *pos* and *endpos* parameters have the same meaning as for the
    :meth:`~Pattern.search` method. ::
@@ -1168,8 +1185,8 @@ attributes:
 .. method:: Pattern.fullmatch(string[, pos[, endpos]])
 
    If the whole *string* matches this regular expression, return a corresponding
-   :ref:`match object <match-objects>`.  Return ``None`` if the string does not
-   match the pattern; note that this is different from a zero-length match.
+   :class:`~re.Match`.  Return ``None`` if the string does not match the pattern;
+   note that this is different from a zero-length match.
 
    The optional *pos* and *endpos* parameters have the same meaning as for the
    :meth:`~Pattern.search` method. ::
@@ -1255,8 +1272,13 @@ when there is no match, you can test whether there was a match with a simple
    if match:
        process(match)
 
-Match objects support the following methods and attributes:
+.. class:: Match
+
+   Match object returned by successful ``match``\ es and ``search``\ es.
 
+   .. versionchanged:: 3.9
+      :py:class:`re.Match` supports ``[]`` to indicate a Unicode (str) or bytes match.
+      See :ref:`types-genericalias`.
 
 .. method:: Match.expand(template)
 
@@ -1520,14 +1542,14 @@ Simulating scanf()
 
 .. index:: single: scanf()
 
-Python does not currently have an equivalent to :c:func:`scanf`.  Regular
+Python does not currently have an equivalent to :c:func:`!scanf`.  Regular
 expressions are generally more powerful, though also more verbose, than
-:c:func:`scanf` format strings.  The table below offers some more-or-less
-equivalent mappings between :c:func:`scanf` format tokens and regular
+:c:func:`!scanf` format strings.  The table below offers some more-or-less
+equivalent mappings between :c:func:`!scanf` format tokens and regular
 expressions.
 
 +--------------------------------+---------------------------------------------+
-| :c:func:`scanf` Token          | Regular Expression                          |
+| :c:func:`!scanf` Token         | Regular Expression                          |
 +================================+=============================================+
 | ``%c``                         | ``.``                                       |
 +--------------------------------+---------------------------------------------+
@@ -1552,7 +1574,7 @@ To extract the filename and numbers from a string like ::
 
    /usr/sbin/sendmail - 0 errors, 4 warnings
 
-you would use a :c:func:`scanf` format like ::
+you would use a :c:func:`!scanf` format like ::
 
    %s - %d errors, %d warnings
 
@@ -1643,7 +1665,7 @@ because the address has spaces, our splitting pattern, in it:
 .. doctest::
    :options: +NORMALIZE_WHITESPACE
 
-   >>> [re.split(":? ", entry, 3) for entry in entries]
+   >>> [re.split(":? ", entry, maxsplit=3) for entry in entries]
    [['Ross', 'McFluff', '834.345.1254', '155 Elm Street'],
    ['Ronald', 'Heathmore', '892.345.3428', '436 Finley Avenue'],
    ['Frank', 'Burger', '925.541.7625', '662 South Dogwood Way'],
@@ -1656,7 +1678,7 @@ house number from the street name:
 .. doctest::
    :options: +NORMALIZE_WHITESPACE
 
-   >>> [re.split(":? ", entry, 4) for entry in entries]
+   >>> [re.split(":? ", entry, maxsplit=4) for entry in entries]
    [['Ross', 'McFluff', '834.345.1254', '155', 'Elm Street'],
    ['Ronald', 'Heathmore', '892.345.3428', '436', 'Finley Avenue'],
    ['Frank', 'Burger', '925.541.7625', '662', 'South Dogwood Way'],
@@ -1700,10 +1722,10 @@ Finding all Adverbs and their Positions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 If one wants more information about all matches of a pattern than the matched
-text, :func:`finditer` is useful as it provides :ref:`match objects
-<match-objects>` instead of strings.  Continuing with the previous example, if
-a writer wanted to find all of the adverbs *and their positions* in
-some text, they would use :func:`finditer` in the following manner::
+text, :func:`finditer` is useful as it provides :class:`~re.Match` objects
+instead of strings.  Continuing with the previous example, if a writer wanted
+to find all of the adverbs *and their positions* in some text, they would use
+:func:`finditer` in the following manner::
 
    >>> text = "He was carefully disguised but captured quickly by police."
    >>> for m in re.finditer(r"\w+ly\b", text):
diff --git a/Doc/library/readline.rst b/Doc/library/readline.rst
index 8fb0eca8df74d8..2e0f45ced30b9c 100644
--- a/Doc/library/readline.rst
+++ b/Doc/library/readline.rst
@@ -27,16 +27,15 @@ Readline library in general.
 .. note::
 
   The underlying Readline library API may be implemented by
-  the ``libedit`` library instead of GNU readline.
+  the ``editline`` (``libedit``) library instead of GNU readline.
   On macOS the :mod:`readline` module detects which library is being used
   at run time.
 
-  The configuration file for ``libedit`` is different from that
+  The configuration file for ``editline`` is different from that
   of GNU readline. If you programmatically load configuration strings
-  you can check for the text "libedit" in :const:`readline.__doc__`
-  to differentiate between GNU readline and libedit.
+  you can use :data:`backend` to determine which library is being used.
 
-  If you use *editline*/``libedit`` readline emulation on macOS, the
+  If you use ``editline``/``libedit`` readline emulation on macOS, the
   initialization file located in your home directory is named
   ``.editrc``. For example, the following content in ``~/.editrc`` will
   turn ON *vi* keybindings and TAB completion::
@@ -44,6 +43,12 @@ Readline library in general.
     python:bind -v
     python:bind ^I rl_complete
 
+.. data:: backend
+
+   The name of the underlying Readline library being used, either
+   ``"readline"`` or ``"editline"``.
+
+   .. versionadded:: 3.13
 
 Init file
 ---------
diff --git a/Doc/library/reprlib.rst b/Doc/library/reprlib.rst
index 5ebb0a7780c37b..678a11c6f45490 100644
--- a/Doc/library/reprlib.rst
+++ b/Doc/library/reprlib.rst
@@ -10,7 +10,7 @@
 
 --------------
 
-The :mod:`reprlib` module provides a means for producing object representations
+The :mod:`!reprlib` module provides a means for producing object representations
 with limits on the size of the resulting strings. This is used in the Python
 debugger and may be useful in other contexts as well.
 
@@ -58,29 +58,31 @@ This module provides a class, an instance, and a function:
    limits on most sizes.
 
 In addition to size-limiting tools, the module also provides a decorator for
-detecting recursive calls to :meth:`__repr__` and substituting a placeholder
-string instead.
+detecting recursive calls to :meth:`~object.__repr__` and substituting a
+placeholder string instead.
 
 
 .. index:: single: ...; placeholder
 
 .. decorator:: recursive_repr(fillvalue="...")
 
-   Decorator for :meth:`__repr__` methods to detect recursive calls within the
+   Decorator for :meth:`~object.__repr__` methods to detect recursive calls within the
    same thread.  If a recursive call is made, the *fillvalue* is returned,
-   otherwise, the usual :meth:`__repr__` call is made.  For example:
-
-        >>> from reprlib import recursive_repr
-        >>> class MyList(list):
-        ...     @recursive_repr()
-        ...     def __repr__(self):
-        ...         return '<' + '|'.join(map(repr, self)) + '>'
-        ...
-        >>> m = MyList('abc')
-        >>> m.append(m)
-        >>> m.append('x')
-        >>> print(m)
-        <'a'|'b'|'c'|...|'x'>
+   otherwise, the usual :meth:`!__repr__` call is made.  For example:
+
+   .. doctest::
+
+      >>> from reprlib import recursive_repr
+      >>> class MyList(list):
+      ...     @recursive_repr()
+      ...     def __repr__(self):
+      ...         return '<' + '|'.join(map(repr, self)) + '>'
+      ...
+      >>> m = MyList('abc')
+      >>> m.append(m)
+      >>> m.append('x')
+      >>> print(m)
+      <'a'|'b'|'c'|...|'x'>
 
    .. versionadded:: 3.2
 
@@ -148,10 +150,10 @@ which format specific object types.
    with no line breaks or indentation, like the standard :func:`repr`.
    For example:
 
-   .. code-block:: pycon
+   .. doctest:: indent
 
       >>> example = [
-              1, 'spam', {'a': 2, 'b': 'spam eggs', 'c': {3: 4.5, 6: []}}, 'ham']
+      ...     1, 'spam', {'a': 2, 'b': 'spam eggs', 'c': {3: 4.5, 6: []}}, 'ham']
       >>> import reprlib
       >>> aRepr = reprlib.Repr()
       >>> print(aRepr.repr(example))
@@ -160,7 +162,7 @@ which format specific object types.
    If :attr:`~Repr.indent` is set to a string, each recursion level
    is placed on its own line, indented by that string:
 
-   .. code-block:: pycon
+   .. doctest:: indent
 
       >>> aRepr.indent = '-->'
       >>> print(aRepr.repr(example))
@@ -181,7 +183,7 @@ which format specific object types.
    Setting :attr:`~Repr.indent` to a positive integer value behaves as if it
    was set to a string with that number of spaces:
 
-   .. code-block:: pycon
+   .. doctest:: indent
 
       >>> aRepr.indent = 4
       >>> print(aRepr.repr(example))
@@ -234,7 +236,9 @@ Subclassing Repr Objects
 The use of dynamic dispatching by :meth:`Repr.repr1` allows subclasses of
 :class:`Repr` to add support for additional built-in object types or to modify
 the handling of types already supported. This example shows how special support
-for file objects could be added::
+for file objects could be added:
+
+.. testcode::
 
    import reprlib
    import sys
@@ -248,3 +252,7 @@ for file objects could be added::
 
    aRepr = MyRepr()
    print(aRepr.repr(sys.stdin))         # prints '<stdin>'
+
+.. testoutput::
+
+   <stdin>
diff --git a/Doc/library/resource.rst b/Doc/library/resource.rst
index a5324c82c63484..ef65674d1b0a78 100644
--- a/Doc/library/resource.rst
+++ b/Doc/library/resource.rst
@@ -13,7 +13,7 @@
 This module provides basic mechanisms for measuring and controlling system
 resources utilized by a program.
 
-.. include:: ../includes/wasm-notavail.rst
+.. availability:: Unix, not Emscripten, not WASI.
 
 Symbolic constants are used to specify particular system resources and to
 request usage information about either the current process or its children.
diff --git a/Doc/library/runpy.rst b/Doc/library/runpy.rst
index 42ed8c253b8027..406b080b7be30f 100644
--- a/Doc/library/runpy.rst
+++ b/Doc/library/runpy.rst
@@ -39,7 +39,7 @@ The :mod:`runpy` module provides two functions:
 
    The *mod_name* argument should be an absolute module name.
    If the module name refers to a package rather than a normal
-   module, then that package is imported and the ``__main__`` submodule within
+   module, then that package is imported and the :mod:`__main__` submodule within
    that package is then executed and the resulting module globals dictionary
    returned.
 
@@ -74,7 +74,7 @@ The :mod:`runpy` module provides two functions:
 
    Note that this manipulation of :mod:`sys` is not thread-safe. Other threads
    may see the partially initialised module, as well as the altered list of
-   arguments. It is recommended that the :mod:`sys` module be left alone when
+   arguments. It is recommended that the ``sys`` module be left alone when
    invoking this function from threaded code.
 
    .. seealso::
@@ -82,7 +82,7 @@ The :mod:`runpy` module provides two functions:
       command line.
 
    .. versionchanged:: 3.1
-      Added ability to execute packages by looking for a ``__main__`` submodule.
+      Added ability to execute packages by looking for a :mod:`__main__` submodule.
 
    .. versionchanged:: 3.2
       Added ``__cached__`` global variable (see :pep:`3147`).
@@ -106,15 +106,16 @@ The :mod:`runpy` module provides two functions:
    Execute the code at the named filesystem location and return the resulting
    module globals dictionary. As with a script name supplied to the CPython
    command line, the supplied path may refer to a Python source file, a
-   compiled bytecode file or a valid sys.path entry containing a ``__main__``
-   module (e.g. a zipfile containing a top-level ``__main__.py`` file).
+   compiled bytecode file or a valid :data:`sys.path` entry containing a
+   :mod:`__main__` module
+   (e.g. a zipfile containing a top-level ``__main__.py`` file).
 
    For a simple script, the specified code is simply executed in a fresh
-   module namespace. For a valid sys.path entry (typically a zipfile or
+   module namespace. For a valid :data:`sys.path` entry (typically a zipfile or
    directory), the entry is first added to the beginning of ``sys.path``. The
    function then looks for and executes a :mod:`__main__` module using the
    updated path. Note that there is no special protection against invoking
-   an existing :mod:`__main__` entry located elsewhere on ``sys.path`` if
+   an existing ``__main__`` entry located elsewhere on ``sys.path`` if
    there is no such module at the specified location.
 
    The optional dictionary argument *init_globals* may be used to pre-populate
@@ -137,14 +138,14 @@ The :mod:`runpy` module provides two functions:
    supplied path, and ``__spec__``, ``__cached__``, ``__loader__`` and
    ``__package__`` will all be set to :const:`None`.
 
-   If the supplied path is a reference to a valid sys.path entry, then
-   ``__spec__`` will be set appropriately for the imported ``__main__``
+   If the supplied path is a reference to a valid :data:`sys.path` entry, then
+   ``__spec__`` will be set appropriately for the imported :mod:`__main__`
    module (that is, ``__spec__.name`` will always be ``__main__``).
    ``__file__``, ``__cached__``, ``__loader__`` and ``__package__`` will be
    :ref:`set as normal <import-mod-attrs>` based on the module spec.
 
    A number of alterations are also made to the :mod:`sys` module. Firstly,
-   ``sys.path`` may be altered as described above. ``sys.argv[0]`` is updated
+   :data:`sys.path` may be altered as described above. ``sys.argv[0]`` is updated
    with the value of ``path_name`` and ``sys.modules[__name__]`` is updated
    with a temporary module object for the module being executed. All
    modifications to items in :mod:`sys` are reverted before the function
@@ -152,7 +153,7 @@ The :mod:`runpy` module provides two functions:
 
    Note that, unlike :func:`run_module`, the alterations made to :mod:`sys`
    are not optional in this function as these adjustments are essential to
-   allowing the execution of sys.path entries. As the thread-safety
+   allowing the execution of :data:`sys.path` entries. As the thread-safety
    limitations still apply, use of this function in threaded code should be
    either serialised with the import lock or delegated to a separate process.
 
@@ -165,7 +166,7 @@ The :mod:`runpy` module provides two functions:
    .. versionchanged:: 3.4
       Updated to take advantage of the module spec feature added by
       :pep:`451`. This allows ``__cached__`` to be set correctly in the
-      case where ``__main__`` is imported from a valid sys.path entry rather
+      case where ``__main__`` is imported from a valid :data:`sys.path` entry rather
       than being executed directly.
 
    .. versionchanged:: 3.12
diff --git a/Doc/library/sched.rst b/Doc/library/sched.rst
index 04215d31ba10ca..01bac5afd0b9b3 100644
--- a/Doc/library/sched.rst
+++ b/Doc/library/sched.rst
@@ -115,7 +115,7 @@ Scheduler Objects
 
 .. method:: scheduler.run(blocking=True)
 
-   Run all scheduled events. This method will wait  (using the :func:`delayfunc`
+   Run all scheduled events. This method will wait  (using the *delayfunc*
    function passed to the constructor) for the next event, then execute it and so
    on until there are no more scheduled events.
 
diff --git a/Doc/library/security_warnings.rst b/Doc/library/security_warnings.rst
index 284f3658320623..a573c98f73eb0a 100644
--- a/Doc/library/security_warnings.rst
+++ b/Doc/library/security_warnings.rst
@@ -9,7 +9,6 @@ The following modules have specific security considerations:
 
 * :mod:`base64`: :ref:`base64 security considerations <base64-security>` in
   :rfc:`4648`
-* :mod:`cgi`: :ref:`CGI security considerations <cgi-security>`
 * :mod:`hashlib`: :ref:`all constructors take a "usedforsecurity" keyword-only
   argument disabling known insecure and blocked algorithms
   <hashlib-usedforsecurity>`
diff --git a/Doc/library/select.rst b/Doc/library/select.rst
index b0891b0c8f584a..c2941e628d9d78 100644
--- a/Doc/library/select.rst
+++ b/Doc/library/select.rst
@@ -6,10 +6,10 @@
 
 --------------
 
-This module provides access to the :c:func:`select` and :c:func:`poll` functions
-available in most operating systems, :c:func:`devpoll` available on
-Solaris and derivatives, :c:func:`epoll` available on Linux 2.5+ and
-:c:func:`kqueue` available on most BSD.
+This module provides access to the :c:func:`!select` and :c:func:`!poll` functions
+available in most operating systems, :c:func:`!devpoll` available on
+Solaris and derivatives, :c:func:`!epoll` available on Linux 2.5+ and
+:c:func:`!kqueue` available on most BSD.
 Note that on Windows, it only works for sockets; on other operating systems,
 it also works for other file types (in particular, on Unix, it works on pipes).
 It cannot be used on regular files to determine whether a file has grown since
@@ -41,10 +41,10 @@ The module defines the following:
    polling object; see section :ref:`devpoll-objects` below for the
    methods supported by devpoll objects.
 
-   :c:func:`devpoll` objects are linked to the number of file
+   :c:func:`!devpoll` objects are linked to the number of file
    descriptors allowed at the time of instantiation. If your program
-   reduces this value, :c:func:`devpoll` will fail. If your program
-   increases this value, :c:func:`devpoll` may return an
+   reduces this value, :c:func:`!devpoll` will fail. If your program
+   increases this value, :c:func:`!devpoll` may return an
    incomplete list of active file descriptors.
 
    The new file descriptor is :ref:`non-inheritable <fd_inheritance>`.
@@ -62,7 +62,7 @@ The module defines the following:
 
    *sizehint* informs epoll about the expected number of events to be
    registered.  It must be positive, or ``-1`` to use the default. It is only
-   used on older systems where :c:func:`epoll_create1` is not available;
+   used on older systems where :c:func:`!epoll_create1` is not available;
    otherwise it has no effect (though its value is still checked).
 
    *flags* is deprecated and completely ignored.  However, when supplied, its
@@ -117,7 +117,7 @@ The module defines the following:
 
 .. function:: select(rlist, wlist, xlist[, timeout])
 
-   This is a straightforward interface to the Unix :c:func:`select` system call.
+   This is a straightforward interface to the Unix :c:func:`!select` system call.
    The first three arguments are iterables of 'waitable objects': either
    integers representing file descriptors or objects with a parameterless method
    named :meth:`~io.IOBase.fileno` returning such an integer:
@@ -154,7 +154,7 @@ The module defines the following:
       .. index:: single: WinSock
 
       File objects on Windows are not acceptable, but sockets are.  On Windows,
-      the underlying :c:func:`select` function is provided by the WinSock
+      the underlying :c:func:`!select` function is provided by the WinSock
       library, and does not handle file descriptors that don't originate from
       WinSock.
 
@@ -169,7 +169,7 @@ The module defines the following:
 
    The minimum number of bytes which can be written without blocking to a pipe
    when the pipe has been reported as ready for writing by :func:`~select.select`,
-   :func:`poll` or another interface in this module.  This doesn't apply
+   :func:`!poll` or another interface in this module.  This doesn't apply
    to other kind of file-like objects such as sockets.
 
    This value is guaranteed by POSIX to be at least 512.
@@ -184,11 +184,11 @@ The module defines the following:
 ``/dev/poll`` Polling Objects
 -----------------------------
 
-Solaris and derivatives have ``/dev/poll``. While :c:func:`select` is
-O(highest file descriptor) and :c:func:`poll` is O(number of file
+Solaris and derivatives have ``/dev/poll``. While :c:func:`!select` is
+O(highest file descriptor) and :c:func:`!poll` is O(number of file
 descriptors), ``/dev/poll`` is O(active file descriptors).
 
-``/dev/poll`` behaviour is very close to the standard :c:func:`poll`
+``/dev/poll`` behaviour is very close to the standard :c:func:`!poll`
 object.
 
 
@@ -222,7 +222,7 @@ object.
    implement :meth:`!fileno`, so they can also be used as the argument.
 
    *eventmask* is an optional bitmask describing the type of events you want to
-   check for. The constants are the same that with :c:func:`poll`
+   check for. The constants are the same that with :c:func:`!poll`
    object. The default value is a combination of the constants :const:`POLLIN`,
    :const:`POLLPRI`, and :const:`POLLOUT`.
 
@@ -231,7 +231,7 @@ object.
       Registering a file descriptor that's already registered is not an
       error, but the result is undefined. The appropriate action is to
       unregister or modify it first. This is an important difference
-      compared with :c:func:`poll`.
+      compared with :c:func:`!poll`.
 
 
 .. method:: devpoll.modify(fd[, eventmask])
@@ -376,13 +376,13 @@ Edge and Level Trigger Polling (epoll) Objects
 Polling Objects
 ---------------
 
-The :c:func:`poll` system call, supported on most Unix systems, provides better
+The :c:func:`!poll` system call, supported on most Unix systems, provides better
 scalability for network servers that service many, many clients at the same
-time. :c:func:`poll` scales better because the system call only requires listing
-the file descriptors of interest, while :c:func:`select` builds a bitmap, turns
+time. :c:func:`!poll` scales better because the system call only requires listing
+the file descriptors of interest, while :c:func:`!select` builds a bitmap, turns
 on bits for the fds of interest, and then afterward the whole bitmap has to be
-linearly scanned again. :c:func:`select` is O(highest file descriptor), while
-:c:func:`poll` is O(number of file descriptors).
+linearly scanned again. :c:func:`!select` is O(highest file descriptor), while
+:c:func:`!poll` is O(number of file descriptors).
 
 
 .. method:: poll.register(fd[, eventmask])
diff --git a/Doc/library/selectors.rst b/Doc/library/selectors.rst
index 0deb15cf4c5037..76cbf91412f763 100644
--- a/Doc/library/selectors.rst
+++ b/Doc/library/selectors.rst
@@ -21,7 +21,7 @@ It defines a :class:`BaseSelector` abstract base class, along with several
 concrete implementations (:class:`KqueueSelector`, :class:`EpollSelector`...),
 that can be used to wait for I/O readiness notification on multiple file
 objects. In the following, "file object" refers to any object with a
-:meth:`fileno()` method, or a raw file descriptor. See :term:`file object`.
+:meth:`~io.IOBase.fileno` method, or a raw file descriptor. See :term:`file object`.
 
 :class:`DefaultSelector` is an alias to the most efficient implementation
 available on the current platform: this should be the default choice for most
@@ -60,9 +60,9 @@ constants below:
    +-----------------------+-----------------------------------------------+
    | Constant              | Meaning                                       |
    +=======================+===============================================+
-   | :const:`EVENT_READ`   | Available for read                            |
+   | .. data:: EVENT_READ  | Available for read                            |
    +-----------------------+-----------------------------------------------+
-   | :const:`EVENT_WRITE`  | Available for write                           |
+   | .. data:: EVENT_WRITE | Available for write                           |
    +-----------------------+-----------------------------------------------+
 
 
@@ -132,8 +132,8 @@ constants below:
 
       Change a registered file object's monitored events or attached data.
 
-      This is equivalent to :meth:`BaseSelector.unregister(fileobj)` followed
-      by :meth:`BaseSelector.register(fileobj, events, data)`, except that it
+      This is equivalent to ``BaseSelector.unregister(fileobj)`` followed
+      by ``BaseSelector.register(fileobj, events, data)``, except that it
       can be implemented more efficiently.
 
       This returns a new :class:`SelectorKey` instance, or raises a
diff --git a/Doc/library/shelve.rst b/Doc/library/shelve.rst
index dc87af398ed757..88802d717d7383 100644
--- a/Doc/library/shelve.rst
+++ b/Doc/library/shelve.rst
@@ -25,7 +25,7 @@ lots of shared  sub-objects.  The keys are ordinary strings.
    database file is opened for reading and writing.  The optional *flag* parameter
    has the same interpretation as the *flag* parameter of :func:`dbm.open`.
 
-   By default, pickles created with :data:`pickle.DEFAULT_PROTOCOL` are used
+   By default, pickles created with :const:`pickle.DEFAULT_PROTOCOL` are used
    to serialize values.  The version of the pickle protocol can be specified
    with the *protocol* parameter.
 
@@ -42,7 +42,7 @@ lots of shared  sub-objects.  The keys are ordinary strings.
    mutated).
 
    .. versionchanged:: 3.10
-      :data:`pickle.DEFAULT_PROTOCOL` is now used as the default pickle
+      :const:`pickle.DEFAULT_PROTOCOL` is now used as the default pickle
       protocol.
 
    .. versionchanged:: 3.11
@@ -94,9 +94,9 @@ Two additional methods are supported:
 Restrictions
 ------------
 
-  .. index::
-     pair: module; dbm.ndbm
-     pair: module; dbm.gnu
+.. index::
+   pair: module; dbm.ndbm
+   pair: module; dbm.gnu
 
 * The choice of which database package will be used (such as :mod:`dbm.ndbm` or
   :mod:`dbm.gnu`) depends on which interface is available.  Therefore it is not
@@ -119,7 +119,7 @@ Restrictions
    A subclass of :class:`collections.abc.MutableMapping` which stores pickled
    values in the *dict* object.
 
-   By default, pickles created with :data:`pickle.DEFAULT_PROTOCOL` are used
+   By default, pickles created with :const:`pickle.DEFAULT_PROTOCOL` are used
    to serialize values.  The version of the pickle protocol can be specified
    with the *protocol* parameter.  See the :mod:`pickle` documentation for a
    discussion of the pickle protocols.
@@ -143,19 +143,20 @@ Restrictions
       Added context manager support.
 
    .. versionchanged:: 3.10
-      :data:`pickle.DEFAULT_PROTOCOL` is now used as the default pickle
+      :const:`pickle.DEFAULT_PROTOCOL` is now used as the default pickle
       protocol.
 
 
 .. class:: BsdDbShelf(dict, protocol=None, writeback=False, keyencoding='utf-8')
 
-   A subclass of :class:`Shelf` which exposes :meth:`first`, :meth:`!next`,
-   :meth:`previous`, :meth:`last` and :meth:`set_location` which are available
-   in the third-party :mod:`bsddb` module from `pybsddb
+   A subclass of :class:`Shelf` which exposes :meth:`!first`, :meth:`!next`,
+   :meth:`!previous`, :meth:`!last` and :meth:`!set_location` methods.
+   These are available
+   in the third-party :mod:`!bsddb` module from `pybsddb
    <https://www.jcea.es/programacion/pybsddb.htm>`_ but not in other database
    modules.  The *dict* object passed to the constructor must support those
    methods.  This is generally accomplished by calling one of
-   :func:`bsddb.hashopen`, :func:`bsddb.btopen` or :func:`bsddb.rnopen`.  The
+   :func:`!bsddb.hashopen`, :func:`!bsddb.btopen` or :func:`!bsddb.rnopen`.  The
    optional *protocol*, *writeback*, and *keyencoding* parameters have the same
    interpretation as for the :class:`Shelf` class.
 
diff --git a/Doc/library/shlex.rst b/Doc/library/shlex.rst
index 0bad51833aae13..f94833ad5331a9 100644
--- a/Doc/library/shlex.rst
+++ b/Doc/library/shlex.rst
@@ -30,12 +30,6 @@ The :mod:`shlex` module defines the following functions:
    in POSIX mode by default, but uses non-POSIX mode if the *posix* argument is
    false.
 
-   .. note::
-
-      Since the :func:`split` function instantiates a :class:`~shlex.shlex`
-      instance, passing ``None`` for *s* will read the string to split from
-      standard input.
-
    .. versionchanged:: 3.12
       Passing ``None`` for *s* argument now raises an exception, rather than
       reading :data:`sys.stdin`.
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index 7f408be2336824..f61ef8b0ecc7ba 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -343,6 +343,12 @@ Directory and files operations
    .. versionchanged:: 3.12
       Added the *onexc* parameter, deprecated *onerror*.
 
+   .. versionchanged:: 3.13
+      :func:`!rmtree` now ignores :exc:`FileNotFoundError` exceptions for all
+      but the top-level path.
+      Exceptions other than :exc:`OSError` and subclasses of :exc:`!OSError`
+      are now always propagated to the caller.
+
    .. attribute:: rmtree.avoids_symlink_attacks
 
       Indicates whether the current platform and implementation provides a
@@ -369,7 +375,7 @@ Directory and files operations
    If *copy_function* is given, it must be a callable that takes two arguments
    *src* and *dst*, and will be used to copy *src* to *dst* if
    :func:`os.rename` cannot be used.  If the source is a directory,
-   :func:`copytree` is called, passing it the :func:`copy_function`. The
+   :func:`copytree` is called, passing it the *copy_function*. The
    default *copy_function* is :func:`copy2`.  Using :func:`~shutil.copy` as the
    *copy_function* allows the move to succeed when it is not possible to also
    copy the metadata, at the expense of not copying any of the metadata.
@@ -399,6 +405,12 @@ Directory and files operations
    total, used and free space, in bytes. *path* may be a file or a
    directory.
 
+   .. note::
+
+      On Unix filesystems, *path* must point to a path within a **mounted**
+      filesystem partition. On those platforms, CPython doesn't attempt to
+      retrieve disk usage information from non-mounted filesystems.
+
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.8
@@ -431,7 +443,7 @@ Directory and files operations
    determining if the file exists and executable.
 
    When no *path* is specified, the results of :func:`os.environ` are used,
-   returning either the "PATH" value or a fallback of :attr:`os.defpath`.
+   returning either the "PATH" value or a fallback of :data:`os.defpath`.
 
    On Windows, the current directory is prepended to the *path* if *mode* does
    not include ``os.X_OK``. When the *mode* does include ``os.X_OK``, the
@@ -470,6 +482,12 @@ Directory and files operations
       or ends with an extension that is in ``PATHEXT``; and filenames that
       have no extension can now be found.
 
+   .. versionchanged:: 3.12.1
+      On Windows, if *mode* includes ``os.X_OK``, executables with an
+      extension in ``PATHEXT`` will be preferred over executables without a
+      matching extension.
+      This brings behavior closer to that of Python 3.11.
+
 .. exception:: Error
 
    This exception collects exceptions that are raised during a multi-file
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 523d1ac5001360..7ee5ece8859825 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -562,7 +562,7 @@ The :mod:`signal` module defines the following functions:
 
    Note that installing a signal handler with :func:`signal` will reset the
    restart behaviour to interruptible by implicitly calling
-   :c:func:`siginterrupt` with a true *flag* value for the given signal.
+   :c:func:`!siginterrupt` with a true *flag* value for the given signal.
 
 
 .. function:: signal(signalnum, handler)
@@ -656,7 +656,7 @@ The :mod:`signal` module defines the following functions:
 .. function:: sigtimedwait(sigset, timeout)
 
    Like :func:`sigwaitinfo`, but takes an additional *timeout* argument
-   specifying a timeout. If *timeout* is specified as :const:`0`, a poll is
+   specifying a timeout. If *timeout* is specified as ``0``, a poll is
    performed. Returns :const:`None` if a timeout occurs.
 
    .. availability:: Unix.
diff --git a/Doc/library/site.rst b/Doc/library/site.rst
index 44f90a3b9e496f..2dc9fb09d727e2 100644
--- a/Doc/library/site.rst
+++ b/Doc/library/site.rst
@@ -19,7 +19,7 @@ Importing this module will append site-specific paths to the module search path
 and add a few builtins, unless :option:`-S` was used.  In that case, this module
 can be safely imported with no automatic modifications to the module search path
 or additions to the builtins.  To explicitly trigger the usual site-specific
-additions, call the :func:`site.main` function.
+additions, call the :func:`main` function.
 
 .. versionchanged:: 3.3
    Importing the module used to trigger paths manipulation even when using
@@ -109,32 +109,40 @@ directory precedes the :file:`foo` directory because :file:`bar.pth` comes
 alphabetically before :file:`foo.pth`; and :file:`spam` is omitted because it is
 not mentioned in either path configuration file.
 
-.. index:: pair: module; sitecustomize
+:mod:`sitecustomize`
+--------------------
+
+.. module:: sitecustomize
 
 After these path manipulations, an attempt is made to import a module named
 :mod:`sitecustomize`, which can perform arbitrary site-specific customizations.
 It is typically created by a system administrator in the site-packages
 directory.  If this import fails with an :exc:`ImportError` or its subclass
-exception, and the exception's :attr:`name` attribute equals to ``'sitecustomize'``,
+exception, and the exception's :attr:`~ImportError.name`
+attribute equals to ``'sitecustomize'``,
 it is silently ignored.  If Python is started without output streams available, as
 with :file:`pythonw.exe` on Windows (which is used by default to start IDLE),
 attempted output from :mod:`sitecustomize` is ignored.  Any other exception
 causes a silent and perhaps mysterious failure of the process.
 
-.. index:: pair: module; usercustomize
+:mod:`usercustomize`
+--------------------
+
+.. module:: usercustomize
 
 After this, an attempt is made to import a module named :mod:`usercustomize`,
 which can perform arbitrary user-specific customizations, if
-:data:`ENABLE_USER_SITE` is true.  This file is intended to be created in the
+:data:`~site.ENABLE_USER_SITE` is true.  This file is intended to be created in the
 user site-packages directory (see below), which is part of ``sys.path`` unless
 disabled by :option:`-s`.  If this import fails with an :exc:`ImportError` or
-its subclass exception, and the exception's :attr:`name` attribute equals to
-``'usercustomize'``, it is silently ignored.
+its subclass exception, and the exception's :attr:`~ImportError.name`
+attribute equals to ``'usercustomize'``, it is silently ignored.
 
 Note that for some non-Unix systems, ``sys.prefix`` and ``sys.exec_prefix`` are
 empty, and the path manipulations are skipped; however the import of
 :mod:`sitecustomize` and :mod:`usercustomize` is still attempted.
 
+.. currentmodule:: site
 
 .. _rlcompleter-config:
 
@@ -189,9 +197,9 @@ Module contents
    :func:`getuserbase` hasn't been called yet.  Default value is
    :file:`~/.local` for UNIX and macOS non-framework builds,
    :file:`~/Library/Python/{X.Y}` for macOS framework builds, and
-   :file:`{%APPDATA%}\\Python` for Windows.  This value is used by Distutils to
+   :file:`{%APPDATA%}\\Python` for Windows.  This value is used to
    compute the installation directories for scripts, data files, Python modules,
-   etc. for the :ref:`user installation scheme <inst-alt-install-user>`.
+   etc. for the :ref:`user installation scheme <sysconfig-user-scheme>`.
    See also :envvar:`PYTHONUSERBASE`.
 
 
@@ -258,11 +266,11 @@ If it is called without arguments, it will print the contents of
 :data:`USER_BASE` and whether the directory exists, then the same thing for
 :data:`USER_SITE`, and finally the value of :data:`ENABLE_USER_SITE`.
 
-.. cmdoption:: --user-base
+.. option:: --user-base
 
    Print the path to the user base directory.
 
-.. cmdoption:: --user-site
+.. option:: --user-site
 
    Print the path to the user site-packages directory.
 
diff --git a/Doc/library/smtplib.rst b/Doc/library/smtplib.rst
index 4686232b09ac47..aaec2aa1ef1dbe 100644
--- a/Doc/library/smtplib.rst
+++ b/Doc/library/smtplib.rst
@@ -98,21 +98,14 @@ Protocol) and :rfc:`1869` (SMTP Service Extensions).
    .. versionchanged:: 3.4
       The class now supports hostname check with
       :attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
-      :data:`ssl.HAS_SNI`).
-
-   .. deprecated:: 3.6
-
-       *keyfile* and *certfile* are deprecated in favor of *context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
+      :const:`ssl.HAS_SNI`).
 
    .. versionchanged:: 3.9
       If the *timeout* parameter is set to be zero, it will raise a
       :class:`ValueError` to prevent the creation of a non-blocking socket
 
    .. versionchanged:: 3.12
-       The deprecated *keyfile* and *certfile* parameters have been removed.
+      The deprecated *keyfile* and *certfile* parameters have been removed.
 
 .. class:: LMTP(host='', port=LMTP_PORT, local_hostname=None, \
                 source_address=None[, timeout])
@@ -407,15 +400,8 @@ An :class:`SMTP` instance has the following methods:
    If there has been no previous ``EHLO`` or ``HELO`` command this session,
    this method tries ESMTP ``EHLO`` first.
 
-   .. deprecated:: 3.6
-
-       *keyfile* and *certfile* are deprecated in favor of *context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
-
    .. versionchanged:: 3.12
-       The deprecated *keyfile* and *certfile* parameters have been removed.
+      The deprecated *keyfile* and *certfile* parameters have been removed.
 
    :exc:`SMTPHeloError`
       The server didn't reply properly to the ``HELO`` greeting.
@@ -432,7 +418,7 @@ An :class:`SMTP` instance has the following methods:
    .. versionchanged:: 3.4
       The method now supports hostname check with
       :attr:`SSLContext.check_hostname` and *Server Name Indicator* (see
-      :data:`~ssl.HAS_SNI`).
+      :const:`~ssl.HAS_SNI`).
 
    .. versionchanged:: 3.5
       The error raised for lack of STARTTLS support is now the
diff --git a/Doc/library/sndhdr.rst b/Doc/library/sndhdr.rst
deleted file mode 100644
index fa9323e18dc348..00000000000000
--- a/Doc/library/sndhdr.rst
+++ /dev/null
@@ -1,104 +0,0 @@
-:mod:`sndhdr` --- Determine type of sound file
-==============================================
-
-.. module:: sndhdr
-   :synopsis: Determine type of a sound file.
-   :deprecated:
-
-.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
-.. Based on comments in the module source file.
-
-**Source code:** :source:`Lib/sndhdr.py`
-
-.. index::
-   single: A-LAW
-   single: u-LAW
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`sndhdr` module is deprecated
-   (see :pep:`PEP 594 <594#sndhdr>` for details and alternatives).
-
---------------
-
-The :mod:`sndhdr` provides utility functions which attempt to determine the type
-of sound data which is in a file.  When these functions are able to determine
-what type of sound data is stored in a file, they return a
-:func:`~collections.namedtuple`, containing five attributes: (``filetype``,
-``framerate``, ``nchannels``, ``nframes``, ``sampwidth``). The value for *type*
-indicates the data type and will be one of the strings ``'aifc'``, ``'aiff'``,
-``'au'``, ``'hcom'``, ``'sndr'``, ``'sndt'``, ``'voc'``, ``'wav'``, ``'8svx'``,
-``'sb'``, ``'ub'``, or ``'ul'``.  The *sampling_rate* will be either the actual
-value or ``0`` if unknown or difficult to decode.  Similarly, *channels* will be
-either the number of channels or ``0`` if it cannot be determined or if the
-value is difficult to decode.  The value for *frames* will be either the number
-of frames or ``-1``.  The last item in the tuple, *bits_per_sample*, will either
-be the sample size in bits or ``'A'`` for A-LAW or ``'U'`` for u-LAW.
-
-
-.. function:: what(filename)
-
-   Determines the type of sound data stored in the file *filename* using
-   :func:`whathdr`.  If it succeeds, returns a namedtuple as described above, otherwise
-   ``None`` is returned.
-
-   .. versionchanged:: 3.5
-      Result changed from a tuple to a namedtuple.
-
-
-.. function:: whathdr(filename)
-
-   Determines the type of sound data stored in a file based on the file  header.
-   The name of the file is given by *filename*.  This function returns a namedtuple as
-   described above on success, or ``None``.
-
-   .. versionchanged:: 3.5
-      Result changed from a tuple to a namedtuple.
-
-The following sound header types are recognized, as listed below with the return value
-from :func:`whathdr`: and :func:`what`:
-
-+------------+------------------------------------+
-| Value      | Sound header format                |
-+============+====================================+
-| ``'aifc'`` | Compressed Audio Interchange Files |
-+------------+------------------------------------+
-| ``'aiff'`` | Audio Interchange Files            |
-+------------+------------------------------------+
-| ``'au'``   | Au Files                           |
-+------------+------------------------------------+
-| ``'hcom'`` | HCOM Files                         |
-+------------+------------------------------------+
-| ``'sndt'`` | Sndtool Sound Files                |
-+------------+------------------------------------+
-| ``'voc'``  | Creative Labs Audio Files          |
-+------------+------------------------------------+
-| ``'wav'``  | Waveform Audio File Format Files   |
-+------------+------------------------------------+
-| ``'8svx'`` | 8-Bit Sampled Voice Files          |
-+------------+------------------------------------+
-| ``'sb'``   | Signed Byte Audio Data Files       |
-+------------+------------------------------------+
-| ``'ub'``   | UB Files                           |
-+------------+------------------------------------+
-| ``'ul'``   | uLAW Audio Files                   |
-+------------+------------------------------------+
-
-.. data:: tests
-
-   A list of functions performing the individual tests.  Each function takes two
-   arguments: the byte-stream and an open file-like object. When :func:`what` is
-   called with a byte-stream, the file-like object will be ``None``.
-
-   The test function should return a string describing the image type if the test
-   succeeded, or ``None`` if it failed.
-
-Example:
-
-.. code-block:: pycon
-
-   >>> import sndhdr
-   >>> imghdr.what('bass.wav')
-   'wav'
-   >>> imghdr.whathdr('bass.wav')
-   'wav'
-
diff --git a/Doc/library/socket.rst b/Doc/library/socket.rst
index 13a82cf82d5908..e0a75304ef1606 100644
--- a/Doc/library/socket.rst
+++ b/Doc/library/socket.rst
@@ -23,7 +23,7 @@ all modern Unix systems, Windows, MacOS, and probably additional platforms.
 
 The Python interface is a straightforward transliteration of the Unix system
 call and library interface for sockets to Python's object-oriented style: the
-:func:`.socket` function returns a :dfn:`socket object` whose methods implement
+:func:`~socket.socket` function returns a :dfn:`socket object` whose methods implement
 the various socket system calls.  Parameter types are somewhat higher-level than
 in the C interface: as with :meth:`read` and :meth:`write` operations on Python
 files, buffer allocation on receive operations is automatic, and buffer length
@@ -185,7 +185,7 @@ created.  Socket addresses are represented as follows:
   .. versionadded:: 3.7
 
 - :const:`AF_PACKET` is a low-level interface directly to network devices.
-  The packets are represented by the tuple
+  The addresses are represented by the tuple
   ``(ifname, proto[, pkttype[, hatype[, addr]]])`` where:
 
   - *ifname* - String specifying the device name.
@@ -193,7 +193,6 @@ created.  Socket addresses are represented as follows:
     May be :data:`ETH_P_ALL` to capture all protocols,
     one of the :ref:`ETHERTYPE_* constants <socket-ethernet-types>`
     or any other Ethernet protocol number.
-    Value must be in network-byte-order.
   - *pkttype* - Optional integer specifying the packet type:
 
     - ``PACKET_HOST`` (the default) - Packet addressed to the local host.
@@ -207,14 +206,14 @@ created.  Socket addresses are represented as follows:
   - *addr* - Optional bytes-like object specifying the hardware physical
     address, whose interpretation depends on the device.
 
-   .. availability:: Linux >= 2.2.
+  .. availability:: Linux >= 2.2.
 
 - :const:`AF_QIPCRTR` is a Linux-only socket based interface for communicating
   with services running on co-processors in Qualcomm platforms. The address
   family is represented as a ``(node, port)`` tuple where the *node* and *port*
   are non-negative integers.
 
-   .. availability:: Linux >= 4.7.
+  .. availability:: Linux >= 4.7.
 
   .. versionadded:: 3.8
 
@@ -348,10 +347,15 @@ Constants
           AF_INET6
 
    These constants represent the address (and protocol) families, used for the
-   first argument to :func:`.socket`.  If the :const:`AF_UNIX` constant is not
+   first argument to :func:`~socket.socket`.  If the :const:`AF_UNIX` constant is not
    defined then this protocol is unsupported.  More constants may be available
    depending on the system.
 
+.. data:: AF_UNSPEC
+
+   :const:`AF_UNSPEC` means that
+   :func:`getaddrinfo` should return socket addresses for any
+   address family (either IPv4, IPv6, or any other) that can be used.
 
 .. data:: SOCK_STREAM
           SOCK_DGRAM
@@ -360,7 +364,7 @@ Constants
           SOCK_SEQPACKET
 
    These constants represent the socket types, used for the second argument to
-   :func:`.socket`.  More constants may be available depending on the system.
+   :func:`~socket.socket`.  More constants may be available depending on the system.
    (Only :const:`SOCK_STREAM` and :const:`SOCK_DGRAM` appear to be generally
    useful.)
 
@@ -380,6 +384,8 @@ Constants
 
    .. versionadded:: 3.2
 
+.. _socket-unix-constants:
+
 .. data:: SO_*
           SOMAXCONN
           MSG_*
@@ -397,7 +403,7 @@ Constants
 
    Many constants of these forms, documented in the Unix documentation on sockets
    and/or the IP protocol, are also defined in the socket module. They are
-   generally used in arguments to the :meth:`setsockopt` and :meth:`getsockopt`
+   generally used in arguments to the :meth:`~socket.setsockopt` and :meth:`~socket.getsockopt`
    methods of socket objects.  In most cases, only those symbols that are defined
    in the Unix header files are defined; for a few symbols, default values are
    provided.
@@ -436,7 +442,8 @@ Constants
       ``TCP_FASTOPEN_CONNECT``, ``TCP_ULP``, ``TCP_MD5SIG_EXT``,
       ``TCP_FASTOPEN_KEY``, ``TCP_FASTOPEN_NO_COOKIE``,
       ``TCP_ZEROCOPY_RECEIVE``, ``TCP_INQ``, ``TCP_TX_DELAY``.
-      Added ``IP_PKTINFO``.
+      Added ``IP_PKTINFO``, ``IP_UNBLOCK_SOURCE``, ``IP_BLOCK_SOURCE``,
+      ``IP_ADD_SOURCE_MEMBERSHIP``, ``IP_DROP_SOURCE_MEMBERSHIP``.
 
 .. data:: AF_CAN
           PF_CAN
@@ -665,7 +672,7 @@ Constants
           HV_GUID_BROADCAST
           HV_GUID_CHILDREN
           HV_GUID_LOOPBACK
-          HV_GUID_LOOPBACK
+          HV_GUID_PARENT
 
    Constants for Windows Hyper-V sockets for host/guest communications.
 
@@ -762,7 +769,7 @@ The following functions all create :ref:`socket objects <socket-objects>`.
 
    Build a pair of connected socket objects using the given address family, socket
    type, and protocol number.  Address family, socket type, and protocol number are
-   as for the :func:`.socket` function above. The default family is :const:`AF_UNIX`
+   as for the :func:`~socket.socket` function above. The default family is :const:`AF_UNIX`
    if defined on the platform; otherwise, the default is :const:`AF_INET`.
 
    The newly created sockets are :ref:`non-inheritable <fd_inheritance>`.
@@ -857,8 +864,8 @@ The following functions all create :ref:`socket objects <socket-objects>`.
 .. function:: fromfd(fd, family, type, proto=0)
 
    Duplicate the file descriptor *fd* (an integer as returned by a file object's
-   :meth:`fileno` method) and build a socket object from the result.  Address
-   family, socket type and protocol number are as for the :func:`.socket` function
+   :meth:`~io.IOBase.fileno` method) and build a socket object from the result.  Address
+   family, socket type and protocol number are as for the :func:`~socket.socket` function
    above. The file descriptor should refer to a socket, but this is not checked ---
    subsequent operations on the object may fail if the file descriptor is invalid.
    This function is rarely needed, but can be used to get or set socket options on
@@ -923,7 +930,7 @@ The :mod:`socket` module also offers various network-related services:
    ``(family, type, proto, canonname, sockaddr)``
 
    In these tuples, *family*, *type*, *proto* are all integers and are
-   meant to be passed to the :func:`.socket` function.  *canonname* will be
+   meant to be passed to the :func:`~socket.socket` function.  *canonname* will be
    a string representing the canonical name of the *host* if
    :const:`AI_CANONNAME` is part of the *flags* argument; else *canonname*
    will be empty.  *sockaddr* is a tuple describing a socket address, whose
@@ -978,7 +985,7 @@ The :mod:`socket` module also offers various network-related services:
 .. function:: gethostbyname_ex(hostname)
 
    Translate a host name to IPv4 address format, extended interface. Return a
-   triple ``(hostname, aliaslist, ipaddrlist)`` where *hostname* is the host's
+   3-tuple ``(hostname, aliaslist, ipaddrlist)`` where *hostname* is the host's
    primary host name, *aliaslist* is a (possibly
    empty) list of alternative host names for the same address, and *ipaddrlist* is
    a list of IPv4 addresses for the same interface on the same host (often but not
@@ -1006,7 +1013,7 @@ The :mod:`socket` module also offers various network-related services:
 
 .. function:: gethostbyaddr(ip_address)
 
-   Return a triple ``(hostname, aliaslist, ipaddrlist)`` where *hostname* is the
+   Return a 3-tuple ``(hostname, aliaslist, ipaddrlist)`` where *hostname* is the
    primary host name responding to the given *ip_address*, *aliaslist* is a
    (possibly empty) list of alternative host names for the same address, and
    *ipaddrlist* is a list of IPv4/v6 addresses for the same interface on the same
@@ -1039,7 +1046,7 @@ The :mod:`socket` module also offers various network-related services:
 .. function:: getprotobyname(protocolname)
 
    Translate an internet protocol name (for example, ``'icmp'``) to a constant
-   suitable for passing as the (optional) third argument to the :func:`.socket`
+   suitable for passing as the (optional) third argument to the :func:`~socket.socket`
    function.  This is usually only needed for sockets opened in "raw" mode
    (:const:`SOCK_RAW`); for the normal socket modes, the correct protocol is chosen
    automatically if the protocol is omitted or zero.
@@ -1323,7 +1330,7 @@ The :mod:`socket` module also offers various network-related services:
 
    Send the list of file descriptors *fds* over an :const:`AF_UNIX` socket *sock*.
    The *fds* parameter is a sequence of file descriptors.
-   Consult :meth:`sendmsg` for the documentation of these parameters.
+   Consult :meth:`~socket.sendmsg` for the documentation of these parameters.
 
    .. availability:: Unix, Windows, not Emscripten, not WASI.
 
@@ -1337,7 +1344,7 @@ The :mod:`socket` module also offers various network-related services:
 
    Receive up to *maxfds* file descriptors from an :const:`AF_UNIX` socket *sock*.
    Return ``(msg, list(fds), flags, addr)``.
-   Consult :meth:`recvmsg` for the documentation of these parameters.
+   Consult :meth:`~socket.recvmsg` for the documentation of these parameters.
 
    .. availability:: Unix, Windows, not Emscripten, not WASI.
 
@@ -1526,7 +1533,7 @@ to sockets.
    Return ``True`` if socket is in blocking mode, ``False`` if in
    non-blocking.
 
-   This is equivalent to checking ``socket.gettimeout() == 0``.
+   This is equivalent to checking ``socket.gettimeout() != 0``.
 
    .. versionadded:: 3.7
 
@@ -2056,10 +2063,10 @@ Example
 
 Here are four minimal example programs using the TCP/IP protocol: a server that
 echoes all data that it receives back (servicing only one client), and a client
-using it.  Note that a server must perform the sequence :func:`.socket`,
+using it.  Note that a server must perform the sequence :func:`~socket.socket`,
 :meth:`~socket.bind`, :meth:`~socket.listen`, :meth:`~socket.accept` (possibly
 repeating the :meth:`~socket.accept` to service more than one client), while a
-client only needs the sequence :func:`.socket`, :meth:`~socket.connect`.  Also
+client only needs the sequence :func:`~socket.socket`, :meth:`~socket.connect`.  Also
 note that the server does not :meth:`~socket.sendall`/:meth:`~socket.recv` on
 the socket it is listening on but on the new socket returned by
 :meth:`~socket.accept`.
@@ -2099,7 +2106,7 @@ The next two examples are identical to the above two, but support both IPv4 and
 IPv6. The server side will listen to the first address family available (it
 should listen to both instead). On most of IPv6-ready systems, IPv6 will take
 precedence and the server may not accept IPv4 traffic. The client side will try
-to connect to the all addresses returned as a result of the name resolution, and
+to connect to all the addresses returned as a result of the name resolution, and
 sends traffic to the first one connected successfully. ::
 
    # Echo server program
@@ -2251,7 +2258,7 @@ This is because the previous execution has left the socket in a ``TIME_WAIT``
 state, and can't be immediately reused.
 
 There is a :mod:`socket` flag to set, in order to prevent this,
-:data:`socket.SO_REUSEADDR`::
+:const:`socket.SO_REUSEADDR`::
 
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
diff --git a/Doc/library/socketserver.rst b/Doc/library/socketserver.rst
index d65e9fe81acf8b..5fd213fa613c8d 100644
--- a/Doc/library/socketserver.rst
+++ b/Doc/library/socketserver.rst
@@ -116,23 +116,28 @@ server is the address family.
    :class:`ForkingMixIn` and the Forking classes mentioned below are
    only available on POSIX platforms that support :func:`~os.fork`.
 
-   :meth:`socketserver.ForkingMixIn.server_close` waits until all child
-   processes complete, except if
-   :attr:`socketserver.ForkingMixIn.block_on_close` attribute is false.
+   .. attribute:: block_on_close
 
-   :meth:`socketserver.ThreadingMixIn.server_close` waits until all non-daemon
-   threads complete, except if
-   :attr:`socketserver.ThreadingMixIn.block_on_close` attribute is false. Use
-   daemonic threads by setting
-   :data:`ThreadingMixIn.daemon_threads` to ``True`` to not wait until threads
-   complete.
+      :meth:`ForkingMixIn.server_close <BaseServer.server_close>`
+      waits until all child processes complete, except if
+      :attr:`block_on_close` attribute is ``False``.
+
+      :meth:`ThreadingMixIn.server_close <BaseServer.server_close>`
+      waits until all non-daemon threads complete, except if
+      :attr:`block_on_close` attribute is ``False``.
+
+   .. attribute:: daemon_threads
+
+      For :class:`ThreadingMixIn` use daemonic threads by setting
+      :data:`ThreadingMixIn.daemon_threads <daemon_threads>`
+      to ``True`` to not wait until threads complete.
 
    .. versionchanged:: 3.7
 
-      :meth:`socketserver.ForkingMixIn.server_close` and
-      :meth:`socketserver.ThreadingMixIn.server_close` now waits until all
+      :meth:`ForkingMixIn.server_close <BaseServer.server_close>` and
+      :meth:`ThreadingMixIn.server_close <BaseServer.server_close>` now waits until all
       child processes and non-daemonic threads complete.
-      Add a new :attr:`socketserver.ForkingMixIn.block_on_close` class
+      Add a new :attr:`ForkingMixIn.block_on_close <block_on_close>` class
       attribute to opt-in for the pre-3.7 behaviour.
 
 
@@ -412,13 +417,13 @@ Request Handler Objects
 
       This function must do all the work required to service a request.  The
       default implementation does nothing.  Several instance attributes are
-      available to it; the request is available as :attr:`self.request`; the client
-      address as :attr:`self.client_address`; and the server instance as
-      :attr:`self.server`, in case it needs access to per-server information.
+      available to it; the request is available as :attr:`request`; the client
+      address as :attr:`client_address`; and the server instance as
+      :attr:`server`, in case it needs access to per-server information.
 
-      The type of :attr:`self.request` is different for datagram or stream
-      services.  For stream services, :attr:`self.request` is a socket object; for
-      datagram services, :attr:`self.request` is a pair of string and socket.
+      The type of :attr:`request` is different for datagram or stream
+      services.  For stream services, :attr:`request` is a socket object; for
+      datagram services, :attr:`request` is a pair of string and socket.
 
 
    .. method:: finish()
@@ -428,20 +433,42 @@ Request Handler Objects
       raises an exception, this function will not be called.
 
 
+   .. attribute:: request
+
+      The *new* :class:`socket.socket` object
+      to be used to communicate with the client.
+
+
+   .. attribute:: client_address
+
+      Client address returned by :meth:`BaseServer.get_request`.
+
+
+   .. attribute:: server
+
+      :class:`BaseServer` object used for handling the request.
+
+
 .. class:: StreamRequestHandler
            DatagramRequestHandler
 
    These :class:`BaseRequestHandler` subclasses override the
    :meth:`~BaseRequestHandler.setup` and :meth:`~BaseRequestHandler.finish`
-   methods, and provide :attr:`self.rfile` and :attr:`self.wfile` attributes.
-   The :attr:`self.rfile` and :attr:`self.wfile` attributes can be
-   read or written, respectively, to get the request data or return data
-   to the client.
-   The :attr:`!rfile` attributes support the :class:`io.BufferedIOBase` readable interface,
-   and :attr:`!wfile` attributes support the :class:`!io.BufferedIOBase` writable interface.
+   methods, and provide :attr:`rfile` and :attr:`wfile` attributes.
+
+   .. attribute:: rfile
+
+      A file object from which receives the request is read.
+      Support the :class:`io.BufferedIOBase` readable interface.
+
+   .. attribute:: wfile
+
+      A file object to which the reply is written.
+      Support the :class:`io.BufferedIOBase` writable interface
+
 
    .. versionchanged:: 3.6
-      :attr:`StreamRequestHandler.wfile` also supports the
+      :attr:`wfile` also supports the
       :class:`io.BufferedIOBase` writable interface.
 
 
diff --git a/Doc/library/spwd.rst b/Doc/library/spwd.rst
deleted file mode 100644
index d1693ea67f0ceb..00000000000000
--- a/Doc/library/spwd.rst
+++ /dev/null
@@ -1,82 +0,0 @@
-:mod:`spwd` --- The shadow password database
-============================================
-
-.. module:: spwd
-   :platform: Unix
-   :synopsis: The shadow password database (getspnam() and friends).
-   :deprecated:
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`spwd` module is deprecated
-   (see :pep:`PEP 594 <594#spwd>` for details and alternatives).
-
---------------
-
-This module provides access to the Unix shadow password database. It is
-available on various Unix versions.
-
-.. include:: ../includes/wasm-notavail.rst
-
-You must have enough privileges to access the shadow password database (this
-usually means you have to be root).
-
-Shadow password database entries are reported as a tuple-like object, whose
-attributes correspond to the members of the ``spwd`` structure (Attribute field
-below, see ``<shadow.h>``):
-
-+-------+---------------+---------------------------------+
-| Index | Attribute     | Meaning                         |
-+=======+===============+=================================+
-| 0     | ``sp_namp``   | Login name                      |
-+-------+---------------+---------------------------------+
-| 1     | ``sp_pwdp``   | Encrypted password              |
-+-------+---------------+---------------------------------+
-| 2     | ``sp_lstchg`` | Date of last change             |
-+-------+---------------+---------------------------------+
-| 3     | ``sp_min``    | Minimal number of days between  |
-|       |               | changes                         |
-+-------+---------------+---------------------------------+
-| 4     | ``sp_max``    | Maximum number of days between  |
-|       |               | changes                         |
-+-------+---------------+---------------------------------+
-| 5     | ``sp_warn``   | Number of days before password  |
-|       |               | expires to warn user about it   |
-+-------+---------------+---------------------------------+
-| 6     | ``sp_inact``  | Number of days after password   |
-|       |               | expires until account is        |
-|       |               | disabled                        |
-+-------+---------------+---------------------------------+
-| 7     | ``sp_expire`` | Number of days since 1970-01-01 |
-|       |               | when account expires            |
-+-------+---------------+---------------------------------+
-| 8     | ``sp_flag``   | Reserved                        |
-+-------+---------------+---------------------------------+
-
-The sp_namp and sp_pwdp items are strings, all others are integers.
-:exc:`KeyError` is raised if the entry asked for cannot be found.
-
-The following functions are defined:
-
-
-.. function:: getspnam(name)
-
-   Return the shadow password database entry for the given user name.
-
-   .. versionchanged:: 3.6
-      Raises a :exc:`PermissionError` instead of :exc:`KeyError` if the user
-      doesn't have privileges.
-
-.. function:: getspall()
-
-   Return a list of all available shadow password database entries, in arbitrary
-   order.
-
-
-.. seealso::
-
-   Module :mod:`grp`
-      An interface to the group database, similar to this.
-
-   Module :mod:`pwd`
-      An interface to the normal password database, similar to this.
-
diff --git a/Doc/library/sqlite3.rst b/Doc/library/sqlite3.rst
index e7129fb3e4de6d..6dbb34a84a4c40 100644
--- a/Doc/library/sqlite3.rst
+++ b/Doc/library/sqlite3.rst
@@ -29,7 +29,7 @@ PostgreSQL or Oracle.
 
 The :mod:`!sqlite3` module was written by Gerhard Häring.  It provides an SQL interface
 compliant with the DB-API 2.0 specification described by :pep:`249`, and
-requires SQLite 3.7.15 or newer.
+requires SQLite 3.15.2 or newer.
 
 This document includes four main sections:
 
@@ -235,11 +235,11 @@ inserted data and retrieved values from it in multiple ways.
 
    * :ref:`sqlite3-howtos` for further reading:
 
-      * :ref:`sqlite3-placeholders`
-      * :ref:`sqlite3-adapters`
-      * :ref:`sqlite3-converters`
-      * :ref:`sqlite3-connection-context-manager`
-      * :ref:`sqlite3-howto-row-factory`
+     * :ref:`sqlite3-placeholders`
+     * :ref:`sqlite3-adapters`
+     * :ref:`sqlite3-converters`
+     * :ref:`sqlite3-connection-context-manager`
+     * :ref:`sqlite3-howto-row-factory`
 
    * :ref:`sqlite3-explanation` for in-depth background on transaction control.
 
@@ -266,8 +266,9 @@ Module functions
 
    :param database:
        The path to the database file to be opened.
-       Pass ``":memory:"`` to open a connection to a database that is
-       in RAM instead of on disk.
+       You can pass ``":memory:"`` to create an `SQLite database existing only
+       in memory <https://sqlite.org/inmemorydb.html>`_, and open a connection
+       to it.
    :type database: :term:`path-like object`
 
    :param float timeout:
@@ -298,7 +299,7 @@ Module functions
        Can be ``"DEFERRED"`` (default), ``"EXCLUSIVE"`` or ``"IMMEDIATE"``;
        or ``None`` to disable opening transactions implicitly.
        Has no effect unless :attr:`Connection.autocommit` is set to
-       :data:`~sqlite3.LEGACY_TRANSACTION_CONTROL` (the default).
+       :const:`~sqlite3.LEGACY_TRANSACTION_CONTROL` (the default).
    :type isolation_level: str | None
 
    :param bool check_same_thread:
@@ -333,7 +334,7 @@ Module functions
        See :attr:`Connection.autocommit` and
        :ref:`sqlite3-transaction-control-autocommit` for more information.
        *autocommit* currently defaults to
-       :data:`~sqlite3.LEGACY_TRANSACTION_CONTROL`.
+       :const:`~sqlite3.LEGACY_TRANSACTION_CONTROL`.
        The default will change to ``False`` in a future Python release.
    :type autocommit: bool
 
@@ -354,6 +355,12 @@ Module functions
    .. versionadded:: 3.12
       The *autocommit* parameter.
 
+   .. versionchanged:: 3.13
+      Positional use of the parameters *timeout*, *detect_types*,
+      *isolation_level*, *check_same_thread*, *factory*, *cached_statements*,
+      and *uri* is deprecated.
+      They will become keyword-only parameters in Python 3.15.
+
 .. function:: complete_statement(statement)
 
    Return ``True`` if the string *statement* appears to contain
@@ -413,15 +420,15 @@ Module functions
 
 .. function:: register_adapter(type, adapter, /)
 
-   Register an *adapter* callable to adapt the Python type *type* into an
-   SQLite type.
+   Register an *adapter* :term:`callable` to adapt the Python type *type*
+   into an SQLite type.
    The adapter is called with a Python object of type *type* as its sole
    argument, and must return a value of a
    :ref:`type that SQLite natively understands <sqlite3-types>`.
 
 .. function:: register_converter(typename, converter, /)
 
-   Register the *converter* callable to convert SQLite objects of type
+   Register the *converter* :term:`callable` to convert SQLite objects of type
    *typename* into a Python object of a specific type.
    The converter is invoked for all SQLite values of type *typename*;
    it is passed a :class:`bytes` object and should return an object of the
@@ -484,7 +491,7 @@ Module constants
           SQLITE_DENY
           SQLITE_IGNORE
 
-   Flags that should be returned by the *authorizer_callback* callable
+   Flags that should be returned by the *authorizer_callback* :term:`callable`
    passed to :meth:`Connection.set_authorizer`, to indicate whether:
 
    * Access is allowed (:const:`!SQLITE_OK`),
@@ -522,13 +529,13 @@ Module constants
    the default `threading mode <https://sqlite.org/threadsafe.html>`_ the
    underlying SQLite library is compiled with. The SQLite threading modes are:
 
-     1. **Single-thread**: In this mode, all mutexes are disabled and SQLite is
-        unsafe to use in more than a single thread at once.
-     2. **Multi-thread**: In this mode, SQLite can be safely used by multiple
-        threads provided that no single database connection is used
-        simultaneously in two or more threads.
-     3. **Serialized**: In serialized mode, SQLite can be safely used by
-        multiple threads with no restriction.
+   1. **Single-thread**: In this mode, all mutexes are disabled and SQLite is
+      unsafe to use in more than a single thread at once.
+   2. **Multi-thread**: In this mode, SQLite can be safely used by multiple
+      threads provided that no single database connection is used
+      simultaneously in two or more threads.
+   3. **Serialized**: In serialized mode, SQLite can be safely used by
+      multiple threads with no restriction.
 
    The mappings from SQLite threading modes to DB-API 2.0 threadsafety levels
    are as follows:
@@ -623,14 +630,20 @@ Connection objects
       * :ref:`sqlite3-connection-shortcuts`
       * :ref:`sqlite3-connection-context-manager`
 
+
+   .. versionchanged:: 3.13
+
+      A :exc:`ResourceWarning` is emitted if :meth:`close` is not called before
+      a :class:`!Connection` object is deleted.
+
    An SQLite database connection has the following attributes and methods:
 
    .. method:: cursor(factory=Cursor)
 
       Create and return a :class:`Cursor` object.
       The cursor method accepts a single optional parameter *factory*. If
-      supplied, this must be a callable returning an instance of :class:`Cursor`
-      or its subclasses.
+      supplied, this must be a :term:`callable` returning
+      an instance of :class:`Cursor` or its subclasses.
 
    .. method:: blobopen(table, column, row, /, *, readonly=False, name="main")
 
@@ -723,7 +736,7 @@ Connection objects
           If ``-1``, it may take any number of arguments.
 
       :param func:
-          A callable that is called when the SQL function is invoked.
+          A :term:`callable` that is called when the SQL function is invoked.
           The callable must return :ref:`a type natively supported by SQLite
           <sqlite3-types>`.
           Set to ``None`` to remove an existing SQL function.
@@ -734,9 +747,6 @@ Connection objects
           `deterministic <https://sqlite.org/deterministic.html>`_,
           which allows SQLite to perform additional optimizations.
 
-      :raises NotSupportedError:
-          If *deterministic* is used with SQLite versions older than 3.8.3.
-
       .. versionadded:: 3.8
          The *deterministic* parameter.
 
@@ -753,8 +763,13 @@ Connection objects
          ...     print(row)
          ('acbd18db4cc2f85cedef654fccc4a4d8',)
 
+      .. versionchanged:: 3.13
+
+         Passing *name*, *narg*, and *func* as keyword arguments is deprecated.
+         These parameters will become positional-only in Python 3.15.
+
 
-   .. method:: create_aggregate(name, /, n_arg, aggregate_class)
+   .. method:: create_aggregate(name, n_arg, aggregate_class)
 
       Create or remove a user-defined SQL aggregate function.
 
@@ -807,6 +822,11 @@ Connection objects
 
          3
 
+      .. versionchanged:: 3.13
+
+         Passing *name*, *n_arg*, and *aggregate_class* as keyword arguments is deprecated.
+         These parameters will become positional-only in Python 3.15.
+
 
    .. method:: create_window_function(name, num_params, aggregate_class, /)
 
@@ -894,7 +914,7 @@ Connection objects
 
          [('a', 9), ('b', 12), ('c', 16), ('d', 12), ('e', 9)]
 
-   .. method:: create_collation(name, callable)
+   .. method:: create_collation(name, callable, /)
 
       Create a collation named *name* using the collating function *callable*.
       *callable* is passed two :class:`string <str>` arguments,
@@ -948,9 +968,10 @@ Connection objects
 
    .. method:: set_authorizer(authorizer_callback)
 
-      Register callable *authorizer_callback* to be invoked for each attempt to
-      access a column of a table in the database. The callback should return
-      one of :const:`SQLITE_OK`, :const:`SQLITE_DENY`, or :const:`SQLITE_IGNORE`
+      Register :term:`callable` *authorizer_callback* to be invoked
+      for each attempt to access a column of a table in the database.
+      The callback should return one of :const:`SQLITE_OK`,
+      :const:`SQLITE_DENY`, or :const:`SQLITE_IGNORE`
       to signal how access to the column should be handled
       by the underlying SQLite library.
 
@@ -970,10 +991,14 @@ Connection objects
       .. versionchanged:: 3.11
          Added support for disabling the authorizer using ``None``.
 
+      .. versionchanged:: 3.13
+         Passing *authorizer_callback* as a keyword argument is deprecated.
+         The parameter will become positional-only in Python 3.15.
+
 
    .. method:: set_progress_handler(progress_handler, n)
 
-      Register callable *progress_handler* to be invoked for every *n*
+      Register :term:`callable` *progress_handler* to be invoked for every *n*
       instructions of the SQLite virtual machine. This is useful if you want to
       get called from SQLite during long-running operations, for example to update
       a GUI.
@@ -985,11 +1010,15 @@ Connection objects
       currently executing query and cause it to raise a :exc:`DatabaseError`
       exception.
 
+      .. versionchanged:: 3.13
+         Passing *progress_handler* as a keyword argument is deprecated.
+         The parameter will become positional-only in Python 3.15.
+
 
    .. method:: set_trace_callback(trace_callback)
 
-      Register callable *trace_callback* to be invoked for each SQL statement
-      that is actually executed by the SQLite backend.
+      Register :term:`callable` *trace_callback* to be invoked
+      for each SQL statement that is actually executed by the SQLite backend.
 
       The only argument passed to the callback is the statement (as
       :class:`str`) that is being executed. The return value of the callback is
@@ -1009,6 +1038,10 @@ Connection objects
 
       .. versionadded:: 3.3
 
+      .. versionchanged:: 3.13
+         Passing *trace_callback* as a keyword argument is deprecated.
+         The parameter will become positional-only in Python 3.15.
+
 
    .. method:: enable_load_extension(enabled, /)
 
@@ -1121,6 +1154,10 @@ Connection objects
                  f.write('%s\n' % line)
          con.close()
 
+      .. seealso::
+
+         :ref:`sqlite3-howto-encoding`
+
 
    .. method:: backup(target, *, pages=-1, progress=None, name="main", sleep=0.250)
 
@@ -1139,8 +1176,8 @@ Connection objects
           Defaults to ``-1``.
 
       :param progress:
-          If set to a callable, it is invoked with three integer arguments for
-          every backup iteration:
+          If set to a :term:`callable`,
+          it is invoked with three integer arguments for every backup iteration:
           the *status* of the last iteration,
           the *remaining* number of pages still to be copied,
           and the *total* number of pages.
@@ -1187,6 +1224,10 @@ Connection objects
 
       .. versionadded:: 3.7
 
+      .. seealso::
+
+         :ref:`sqlite3-howto-encoding`
+
    .. method:: getlimit(category, /)
 
       Get a connection runtime limit.
@@ -1404,43 +1445,12 @@ Connection objects
 
    .. attribute:: text_factory
 
-      A callable that accepts a :class:`bytes` parameter and returns a text
-      representation of it.
+      A :term:`callable` that accepts a :class:`bytes` parameter
+      and returns a text representation of it.
       The callable is invoked for SQLite values with the ``TEXT`` data type.
       By default, this attribute is set to :class:`str`.
-      If you want to return ``bytes`` instead, set *text_factory* to ``bytes``.
-
-      Example:
-
-      .. testcode::
-
-         con = sqlite3.connect(":memory:")
-         cur = con.cursor()
-
-         AUSTRIA = "Österreich"
-
-         # by default, rows are returned as str
-         cur.execute("SELECT ?", (AUSTRIA,))
-         row = cur.fetchone()
-         assert row[0] == AUSTRIA
-
-         # but we can make sqlite3 always return bytestrings ...
-         con.text_factory = bytes
-         cur.execute("SELECT ?", (AUSTRIA,))
-         row = cur.fetchone()
-         assert type(row[0]) is bytes
-         # the bytestrings will be encoded in UTF-8, unless you stored garbage in the
-         # database ...
-         assert row[0] == AUSTRIA.encode("utf-8")
-
-         # we can also implement a custom text_factory ...
-         # here we implement one that appends "foo" to all strings
-         con.text_factory = lambda x: x.decode("utf-8") + "foo"
-         cur.execute("SELECT ?", ("bar",))
-         row = cur.fetchone()
-         assert row[0] == "barfoo"
 
-         con.close()
+      See :ref:`sqlite3-howto-encoding` for more details.
 
    .. attribute:: total_changes
 
@@ -1492,7 +1502,7 @@ Cursor objects
 
    .. method:: execute(sql, parameters=(), /)
 
-      Execute SQL a single SQL statement,
+      Execute a single SQL statement,
       optionally binding Python values using
       :ref:`placeholders <sqlite3-placeholders>`.
 
@@ -1545,7 +1555,7 @@ Cursor objects
 
       :raises ProgrammingError:
          If *sql* contains more than one SQL statement,
-         or is not a DML statment.
+         or is not a DML statement.
 
       Example:
 
@@ -1599,7 +1609,6 @@ Cursor objects
              COMMIT;
          """)
 
-
    .. method:: fetchone()
 
       If :attr:`~Cursor.row_factory` is ``None``,
@@ -1819,9 +1828,9 @@ Blob objects
    .. method:: seek(offset, origin=os.SEEK_SET, /)
 
       Set the current access position of the blob to *offset*.  The *origin*
-      argument defaults to :data:`os.SEEK_SET` (absolute blob positioning).
-      Other values for *origin* are :data:`os.SEEK_CUR` (seek relative to the
-      current position) and :data:`os.SEEK_END` (seek relative to the blob’s
+      argument defaults to :const:`os.SEEK_SET` (absolute blob positioning).
+      Other values for *origin* are :const:`os.SEEK_CUR` (seek relative to the
+      current position) and :const:`os.SEEK_END` (seek relative to the blob’s
       end).
 
 
@@ -2404,9 +2413,9 @@ or if :attr:`~Connection.autocommit` is ``True``,
 the context manager does nothing.
 
 .. note::
-
    The context manager neither implicitly opens a new transaction
-   nor closes the connection.
+   nor closes the connection. If you need a closing context manager, consider
+   using :meth:`contextlib.closing`.
 
 .. testcode::
 
@@ -2521,6 +2530,13 @@ Queries now return :class:`!Row` objects:
    >>> row["RADIUS"]  # Column names are case-insensitive.
    6378
 
+.. note::
+
+    The ``FROM`` clause can be omitted in the ``SELECT`` statement, as in the
+    above example. In such cases, SQLite returns a single row with columns
+    defined by expressions, e.g. literals, with the given aliases
+    ``expr AS alias``.
+
 You can create a custom :attr:`~Cursor.row_factory`
 that returns each row as a :class:`dict`, with column names mapped to values:
 
@@ -2571,6 +2587,47 @@ With some adjustments, the above recipe can be adapted to use a
 instead of a :class:`~collections.namedtuple`.
 
 
+.. _sqlite3-howto-encoding:
+
+How to handle non-UTF-8 text encodings
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+By default, :mod:`!sqlite3` uses :class:`str` to adapt SQLite values
+with the ``TEXT`` data type.
+This works well for UTF-8 encoded text, but it might fail for other encodings
+and invalid UTF-8.
+You can use a custom :attr:`~Connection.text_factory` to handle such cases.
+
+Because of SQLite's `flexible typing`_, it is not uncommon to encounter table
+columns with the ``TEXT`` data type containing non-UTF-8 encodings,
+or even arbitrary data.
+To demonstrate, let's assume we have a database with ISO-8859-2 (Latin-2)
+encoded text, for example a table of Czech-English dictionary entries.
+Assuming we now have a :class:`Connection` instance :py:data:`!con`
+connected to this database,
+we can decode the Latin-2 encoded text using this :attr:`~Connection.text_factory`:
+
+.. testcode::
+
+   con.text_factory = lambda data: str(data, encoding="latin2")
+
+For invalid UTF-8 or arbitrary data in stored in ``TEXT`` table columns,
+you can use the following technique, borrowed from the :ref:`unicode-howto`:
+
+.. testcode::
+
+   con.text_factory = lambda data: str(data, errors="surrogateescape")
+
+.. note::
+
+   The :mod:`!sqlite3` module API does not support strings
+   containing surrogates.
+
+.. seealso::
+
+   :ref:`unicode-howto`
+
+
 .. _sqlite3-explanation:
 
 Explanation
diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst
index 18a6c5ab4858a4..0db233e2dde33c 100644
--- a/Doc/library/ssl.rst
+++ b/Doc/library/ssl.rst
@@ -43,8 +43,10 @@ This module provides a class, :class:`ssl.SSLSocket`, which is derived from the
 :class:`socket.socket` type, and provides a socket-like wrapper that also
 encrypts and decrypts the data going over the socket with SSL.  It supports
 additional methods such as :meth:`getpeercert`, which retrieves the
-certificate of the other side of the connection, and :meth:`cipher`, which
-retrieves the cipher being used for the secure connection.
+certificate of the other side of the connection, :meth:`cipher`, which
+retrieves the cipher being used for the secure connection or
+:meth:`get_verified_chain`, :meth:`get_unverified_chain` which retrieves
+certificate chain.
 
 For more sophisticated applications, the :class:`ssl.SSLContext` class
 helps manage settings and certificates, which can then be inherited
@@ -139,7 +141,7 @@ purposes.
    The settings are: :data:`PROTOCOL_TLS_CLIENT` or
    :data:`PROTOCOL_TLS_SERVER`, :data:`OP_NO_SSLv2`, and :data:`OP_NO_SSLv3`
    with high encryption cipher suites without RC4 and
-   without unauthenticated cipher suites. Passing :data:`~Purpose.SERVER_AUTH`
+   without unauthenticated cipher suites. Passing :const:`~Purpose.SERVER_AUTH`
    as *purpose* sets :data:`~SSLContext.verify_mode` to :data:`CERT_REQUIRED`
    and either loads CA certificates (when at least one of *cafile*, *capath* or
    *cadata* is given) or uses :meth:`SSLContext.load_default_certs` to load
@@ -320,7 +322,7 @@ Random generation
 
    Mix the given *bytes* into the SSL pseudo-random number generator.  The
    parameter *entropy* (a float) is a lower bound on the entropy contained in
-   string (so you can always use :const:`0.0`).  See :rfc:`1750` for more
+   string (so you can always use ``0.0``).  See :rfc:`1750` for more
    information on sources of entropy.
 
    .. versionchanged:: 3.5
@@ -906,6 +908,12 @@ Constants
 
    .. versionadded:: 3.7
 
+.. data:: HAS_PSK
+
+   Whether the OpenSSL library has built-in support for TLS-PSK.
+
+   .. versionadded:: 3.13
+
 .. data:: CHANNEL_BINDING_TYPES
 
    List of supported TLS channel binding types.  Strings in this list
@@ -1210,6 +1218,22 @@ SSL sockets also have the following additional methods and attributes:
    .. versionchanged:: 3.9
       IPv6 address strings no longer have a trailing new line.
 
+.. method:: SSLSocket.get_verified_chain()
+
+   Returns verified certificate chain provided by the other
+   end of the SSL channel as a list of DER-encoded bytes.
+   If certificate verification was disabled method acts the same as
+   :meth:`~SSLSocket.get_unverified_chain`.
+
+   .. versionadded:: 3.13
+
+.. method:: SSLSocket.get_unverified_chain()
+
+   Returns raw certificate chain provided by the other
+   end of the SSL channel as a list of DER-encoded bytes.
+
+   .. versionadded:: 3.13
+
 .. method:: SSLSocket.cipher()
 
    Returns a three-value tuple containing the name of the cipher being used, the
@@ -1380,18 +1404,18 @@ to speed up repeated connections from the same clients.
    Here's a table showing which versions in a client (down the side) can connect
    to which versions in a server (along the top):
 
-     .. table::
+   .. table::
 
-       ========================  ============  ============  =============  =========  ===========  ===========
-        *client* / **server**    **SSLv2**     **SSLv3**     **TLS** [3]_   **TLSv1**  **TLSv1.1**  **TLSv1.2**
-       ------------------------  ------------  ------------  -------------  ---------  -----------  -----------
-        *SSLv2*                    yes           no            no [1]_        no         no         no
-        *SSLv3*                    no            yes           no [2]_        no         no         no
-        *TLS* (*SSLv23*) [3]_      no [1]_       no [2]_       yes            yes        yes        yes
-        *TLSv1*                    no            no            yes            yes        no         no
-        *TLSv1.1*                  no            no            yes            no         yes        no
-        *TLSv1.2*                  no            no            yes            no         no         yes
-       ========================  ============  ============  =============  =========  ===========  ===========
+      ========================  ============  ============  =============  =========  ===========  ===========
+       *client* / **server**    **SSLv2**     **SSLv3**     **TLS** [3]_   **TLSv1**  **TLSv1.1**  **TLSv1.2**
+      ------------------------  ------------  ------------  -------------  ---------  -----------  -----------
+       *SSLv2*                    yes           no            no [1]_        no         no         no
+       *SSLv3*                    no            yes           no [2]_        no         no         no
+       *TLS* (*SSLv23*) [3]_      no [1]_       no [2]_       yes            yes        yes        yes
+       *TLSv1*                    no            no            yes            yes        no         no
+       *TLSv1.1*                  no            no            yes            no         yes        no
+       *TLSv1.2*                  no            no            yes            no         no         yes
+      ========================  ============  ============  =============  =========  ===========  ===========
 
    .. rubric:: Footnotes
    .. [1] :class:`SSLContext` disables SSLv2 with :data:`OP_NO_SSLv2` by default.
@@ -1484,9 +1508,9 @@ to speed up repeated connections from the same clients.
    load CA certificates from other locations, too.
 
    The *purpose* flag specifies what kind of CA certificates are loaded. The
-   default settings :data:`Purpose.SERVER_AUTH` loads certificates, that are
+   default settings :const:`Purpose.SERVER_AUTH` loads certificates, that are
    flagged and trusted for TLS web server authentication (client side
-   sockets). :data:`Purpose.CLIENT_AUTH` loads CA certificates for client
+   sockets). :const:`Purpose.CLIENT_AUTH` loads CA certificates for client
    certificate verification on the server side.
 
    .. versionadded:: 3.4
@@ -1656,8 +1680,9 @@ to speed up repeated connections from the same clients.
    Due to the early negotiation phase of the TLS connection, only limited
    methods and attributes are usable like
    :meth:`SSLSocket.selected_alpn_protocol` and :attr:`SSLSocket.context`.
-   The :meth:`SSLSocket.getpeercert`,
-   :meth:`SSLSocket.cipher` and :meth:`SSLSocket.compression` methods require that
+   The :meth:`SSLSocket.getpeercert`, :meth:`SSLSocket.get_verified_chain`,
+   :meth:`SSLSocket.get_unverified_chain` :meth:`SSLSocket.cipher`
+   and :meth:`SSLSocket.compression` methods require that
    the TLS connection has progressed beyond the TLS Client Hello and therefore
    will not return meaningful values nor can they be called safely.
 
@@ -1729,7 +1754,7 @@ to speed up repeated connections from the same clients.
    Wrap an existing Python socket *sock* and return an instance of
    :attr:`SSLContext.sslsocket_class` (default :class:`SSLSocket`). The
    returned SSL socket is tied to the context, its settings and certificates.
-   *sock* must be a :data:`~socket.SOCK_STREAM` socket; other
+   *sock* must be a :const:`~socket.SOCK_STREAM` socket; other
    socket types are unsupported.
 
    The parameter ``server_side`` is a boolean which identifies whether
@@ -1987,6 +2012,100 @@ to speed up repeated connections from the same clients.
          >>> ssl.create_default_context().verify_mode  # doctest: +SKIP
          <VerifyMode.CERT_REQUIRED: 2>
 
+.. method:: SSLContext.set_psk_client_callback(callback)
+
+   Enables TLS-PSK (pre-shared key) authentication on a client-side connection.
+
+   In general, certificate based authentication should be preferred over this method.
+
+   The parameter ``callback`` is a callable object with the signature:
+   ``def callback(hint: str | None) -> tuple[str | None, bytes]``.
+   The ``hint`` parameter is an optional identity hint sent by the server.
+   The return value is a tuple in the form (client-identity, psk).
+   Client-identity is an optional string which may be used by the server to
+   select a corresponding PSK for the client. The string must be less than or
+   equal to ``256`` octets when UTF-8 encoded. PSK is a
+   :term:`bytes-like object` representing the pre-shared key. Return a zero
+   length PSK to reject the connection.
+
+   Setting ``callback`` to :const:`None` removes any existing callback.
+
+   .. note::
+      When using TLS 1.3:
+
+      - the ``hint`` parameter is always :const:`None`.
+      - client-identity must be a non-empty string.
+
+   Example usage::
+
+      context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+      context.check_hostname = False
+      context.verify_mode = ssl.CERT_NONE
+      context.maximum_version = ssl.TLSVersion.TLSv1_2
+      context.set_ciphers('PSK')
+
+      # A simple lambda:
+      psk = bytes.fromhex('c0ffee')
+      context.set_psk_client_callback(lambda hint: (None, psk))
+
+      # A table using the hint from the server:
+      psk_table = { 'ServerId_1': bytes.fromhex('c0ffee'),
+                    'ServerId_2': bytes.fromhex('facade')
+      }
+      def callback(hint):
+          return 'ClientId_1', psk_table.get(hint, b'')
+      context.set_psk_client_callback(callback)
+
+   This method will raise :exc:`NotImplementedError` if :data:`HAS_PSK` is
+   ``False``.
+
+   .. versionadded:: 3.13
+
+.. method:: SSLContext.set_psk_server_callback(callback, identity_hint=None)
+
+   Enables TLS-PSK (pre-shared key) authentication on a server-side connection.
+
+   In general, certificate based authentication should be preferred over this method.
+
+   The parameter ``callback`` is a callable object with the signature:
+   ``def callback(identity: str | None) -> bytes``.
+   The ``identity`` parameter is an optional identity sent by the client which can
+   be used to select a corresponding PSK.
+   The return value is a :term:`bytes-like object` representing the pre-shared key.
+   Return a zero length PSK to reject the connection.
+
+   Setting ``callback`` to :const:`None` removes any existing callback.
+
+   The parameter ``identity_hint`` is an optional identity hint string sent to
+   the client. The string must be less than or equal to ``256`` octets when
+   UTF-8 encoded.
+
+   .. note::
+      When using TLS 1.3 the ``identity_hint`` parameter is not sent to the client.
+
+   Example usage::
+
+      context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+      context.maximum_version = ssl.TLSVersion.TLSv1_2
+      context.set_ciphers('PSK')
+
+      # A simple lambda:
+      psk = bytes.fromhex('c0ffee')
+      context.set_psk_server_callback(lambda identity: psk)
+
+      # A table using the identity of the client:
+      psk_table = { 'ClientId_1': bytes.fromhex('c0ffee'),
+                    'ClientId_2': bytes.fromhex('facade')
+      }
+      def callback(identity):
+          return psk_table.get(identity, b'')
+      context.set_psk_server_callback(callback, 'ServerId_1')
+
+   This method will raise :exc:`NotImplementedError` if :data:`HAS_PSK` is
+   ``False``.
+
+   .. versionadded:: 3.13
+
 .. index:: single: certificates
 
 .. index:: single: X509 certificate
@@ -2414,6 +2533,8 @@ provided.
    - :meth:`~SSLSocket.read`
    - :meth:`~SSLSocket.write`
    - :meth:`~SSLSocket.getpeercert`
+   - :meth:`~SSLSocket.get_verified_chain`
+   - :meth:`~SSLSocket.get_unverified_chain`
    - :meth:`~SSLSocket.selected_alpn_protocol`
    - :meth:`~SSLSocket.selected_npn_protocol`
    - :meth:`~SSLSocket.cipher`
@@ -2592,7 +2713,7 @@ disabled by default.
    >>> client_context.maximum_version = ssl.TLSVersion.TLSv1_3
 
 
-The SSL context created above will only allow TLSv1.2 and later (if
+The SSL context created above will only allow TLSv1.3 and later (if
 supported by your system) connections to a server. :const:`PROTOCOL_TLS_CLIENT`
 implies certificate validation and hostname checks by default. You have to
 load certificates into the context.
diff --git a/Doc/library/stat.rst b/Doc/library/stat.rst
index 083dc5e3bcfd68..77538514598a50 100644
--- a/Doc/library/stat.rst
+++ b/Doc/library/stat.rst
@@ -13,8 +13,8 @@
 
 The :mod:`stat` module defines constants and functions for interpreting the
 results of :func:`os.stat`, :func:`os.fstat` and :func:`os.lstat` (if they
-exist).  For complete details about the :c:func:`stat`, :c:func:`fstat` and
-:c:func:`lstat` calls, consult the documentation for your system.
+exist).  For complete details about the :c:func:`stat`, :c:func:`!fstat` and
+:c:func:`!lstat` calls, consult the documentation for your system.
 
 .. versionchanged:: 3.4
    The stat module is backed by a C implementation.
@@ -89,9 +89,9 @@ mode:
 .. function:: S_IFMT(mode)
 
    Return the portion of the file's mode that describes the file type (used by the
-   :func:`S_IS\*` functions above).
+   :func:`!S_IS\*` functions above).
 
-Normally, you would use the :func:`os.path.is\*` functions for testing the type
+Normally, you would use the :func:`!os.path.is\*` functions for testing the type
 of a file; the functions here are useful when you are doing multiple tests of
 the same file and wish to avoid the overhead of the :c:func:`stat` system call
 for each test.  These are also useful when checking for information about a file
diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst
index 395b324c860389..5c8ad3a7dd7380 100644
--- a/Doc/library/statistics.rst
+++ b/Doc/library/statistics.rst
@@ -14,6 +14,7 @@
 .. testsetup:: *
 
    from statistics import *
+   import math
    __name__ = '<doctest>'
 
 --------------
@@ -584,7 +585,7 @@ However, for reading convenience, most of the examples show sorted sequences.
 
    The *data* can be any iterable containing sample data.  For meaningful
    results, the number of data points in *data* should be larger than *n*.
-   Raises :exc:`StatisticsError` if there are not at least two data points.
+   Raises :exc:`StatisticsError` if there is not at least one data point.
 
    The cut points are linearly interpolated from the
    two nearest data points.  For example, if a cut point falls one-third
@@ -624,6 +625,11 @@ However, for reading convenience, most of the examples show sorted sequences.
 
    .. versionadded:: 3.8
 
+   .. versionchanged:: 3.13
+      No longer raises an exception for an input with only a single data point.
+      This allows quantile estimates to be built up one sample point
+      at a time becoming gradually more refined with each new data point.
+
 .. function:: covariance(x, y, /)
 
    Return the sample covariance of two inputs *x* and *y*. Covariance
@@ -741,6 +747,24 @@ However, for reading convenience, most of the examples show sorted sequences.
 
       *y = slope \* x + noise*
 
+   Continuing the example from :func:`correlation`, we look to see
+   how well a model based on major planets can predict the orbital
+   distances for dwarf planets:
+
+   .. doctest::
+
+      >>> model = linear_regression(period_squared, dist_cubed, proportional=True)
+      >>> slope = model.slope
+
+      >>> # Dwarf planets:   Pluto,  Eris,    Makemake, Haumea, Ceres
+      >>> orbital_periods = [90_560, 204_199, 111_845, 103_410, 1_680]  # days
+      >>> predicted_dist = [math.cbrt(slope * (p * p)) for p in orbital_periods]
+      >>> list(map(round, predicted_dist))
+      [5912, 10166, 6806, 6459, 414]
+
+      >>> [5_906, 10_152, 6_796, 6_450, 414]  # actual distance in million km
+      [5906, 10152, 6796, 6450, 414]
+
    .. versionadded:: 3.10
 
    .. versionchanged:: 3.11
@@ -828,6 +852,11 @@ of applications in statistics.
        number generator.  This is useful for creating reproducible results,
        even in a multi-threading context.
 
+       .. versionchanged:: 3.13
+
+       Switched to a faster algorithm.  To reproduce samples from previous
+       versions, use :func:`random.seed` and :func:`random.gauss`.
+
     .. method:: NormalDist.pdf(x)
 
        Using a `probability density function (pdf)
@@ -922,6 +951,10 @@ of applications in statistics.
 :class:`NormalDist` Examples and Recipes
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+
+Classic probability problems
+****************************
+
 :class:`NormalDist` readily solves classic probability problems.
 
 For example, given `historical data for SAT exams
@@ -947,6 +980,10 @@ Find the `quartiles <https://en.wikipedia.org/wiki/Quartile>`_ and `deciles
     >>> list(map(round, sat.quantiles(n=10)))
     [810, 896, 958, 1011, 1060, 1109, 1162, 1224, 1310]
 
+
+Monte Carlo inputs for simulations
+**********************************
+
 To estimate the distribution for a model than isn't easy to solve
 analytically, :class:`NormalDist` can generate input samples for a `Monte
 Carlo simulation <https://en.wikipedia.org/wiki/Monte_Carlo_method>`_:
@@ -963,6 +1000,9 @@ Carlo simulation <https://en.wikipedia.org/wiki/Monte_Carlo_method>`_:
     >>> quantiles(map(model, X, Y, Z))       # doctest: +SKIP
     [1.4591308524824727, 1.8035946855390597, 2.175091447274739]
 
+Approximating binomial distributions
+************************************
+
 Normal distributions can be used to approximate `Binomial
 distributions <https://mathworld.wolfram.com/BinomialDistribution.html>`_
 when the sample size is large and when the probability of a successful
@@ -1000,6 +1040,10 @@ probability that the Python room will stay within its capacity limits?
     >>> mean(trial() <= k for i in range(10_000))
     0.8398
 
+
+Naive bayesian classifier
+*************************
+
 Normal distributions commonly arise in machine learning problems.
 
 Wikipedia has a `nice example of a Naive Bayesian Classifier
@@ -1054,6 +1098,48 @@ The final prediction goes to the largest posterior. This is known as the
   'female'
 
 
+Kernel density estimation
+*************************
+
+It is possible to estimate a continuous probability density function
+from a fixed number of discrete samples.
+
+The basic idea is to smooth the data using `a kernel function such as a
+normal distribution, triangular distribution, or uniform distribution
+<https://en.wikipedia.org/wiki/Kernel_(statistics)#Kernel_functions_in_common_use>`_.
+The degree of smoothing is controlled by a single
+parameter, ``h``, representing the variance of the kernel function.
+
+.. testcode::
+
+   import math
+
+   def kde_normal(sample, h):
+       "Create a continuous probability density function from a sample."
+       # Smooth the sample with a normal distribution of variance h.
+       kernel_h = NormalDist(0.0, math.sqrt(h)).pdf
+       n = len(sample)
+       def pdf(x):
+           return sum(kernel_h(x - x_i) for x_i in sample) / n
+       return pdf
+
+`Wikipedia has an example
+<https://en.wikipedia.org/wiki/Kernel_density_estimation#Example>`_
+where we can use the ``kde_normal()`` recipe to generate and plot
+a probability density function estimated from a small sample:
+
+.. doctest::
+
+   >>> sample = [-2.1, -1.3, -0.4, 1.9, 5.1, 6.2]
+   >>> f_hat = kde_normal(sample, h=2.25)
+   >>> xarr = [i/100 for i in range(-750, 1100)]
+   >>> yarr = [f_hat(x) for x in xarr]
+
+The points in ``xarr`` and ``yarr`` can be used to make a PDF plot:
+
+.. image:: kde_example.png
+   :alt: Scatter plot of the estimated probability density function.
+
 ..
    # This modelines must appear within the last ten lines of the file.
    kate: indent-width 3; remove-trailing-space on; replace-tabs on; encoding utf-8;
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 9203afbf6a4e8a..1265b5b12e492d 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -44,15 +44,16 @@ Any object can be tested for truth value, for use in an :keyword:`if` or
 .. index:: single: true
 
 By default, an object is considered true unless its class defines either a
-:meth:`__bool__` method that returns ``False`` or a :meth:`__len__` method that
+:meth:`~object.__bool__` method that returns ``False`` or a
+:meth:`~object.__len__` method that
 returns zero, when called with the object. [1]_  Here are most of the built-in
 objects considered false:
 
-  .. index::
-     single: None (Built-in object)
-     single: False (Built-in object)
+.. index::
+   single: None (Built-in object)
+   single: False (Built-in object)
 
-* constants defined to be false: ``None`` and ``False``.
+* constants defined to be false: ``None`` and ``False``
 
 * zero of any numeric type: ``0``, ``0.0``, ``0j``, ``Decimal(0)``,
   ``Fraction(0, 1)``
@@ -197,7 +198,7 @@ exception.
 
 Two more operations with the same syntactic priority, :keyword:`in` and
 :keyword:`not in`, are supported by types that are :term:`iterable` or
-implement the :meth:`__contains__` method.
+implement the :meth:`~object.__contains__` method.
 
 .. _typesnumeric:
 
@@ -282,7 +283,7 @@ the operations, see :ref:`operator-summary`):
 +---------------------+---------------------------------+---------+--------------------+
 | ``x / y``           | quotient of *x* and *y*         |         |                    |
 +---------------------+---------------------------------+---------+--------------------+
-| ``x // y``          | floored quotient of *x* and     | \(1)    |                    |
+| ``x // y``          | floored quotient of *x* and     | \(1)\(2)|                    |
 |                     | *y*                             |         |                    |
 +---------------------+---------------------------------+---------+--------------------+
 | ``x % y``           | remainder of ``x / y``          | \(2)    |                    |
@@ -319,8 +320,10 @@ the operations, see :ref:`operator-summary`):
 Notes:
 
 (1)
-   Also referred to as integer division.  The resultant value is a whole
-   integer, though the result's type is not necessarily int.  The result is
+   Also referred to as integer division.  For operands of type :class:`int`,
+   the result has type :class:`int`.  For operands of type :class:`float`,
+   the result has type :class:`float`.  In general, the result is a whole
+   integer, though the result's type is not necessarily :class:`int`.  The result is
    always rounded towards minus infinity: ``1//2`` is ``0``, ``(-1)//2`` is
    ``-1``, ``1//(-2)`` is ``-1``, and ``(-1)//(-2)`` is ``0``.
 
@@ -715,7 +718,7 @@ that's defined for any rational number, and hence applies to all instances of
 :class:`int` and :class:`fractions.Fraction`, and all finite instances of
 :class:`float` and :class:`decimal.Decimal`.  Essentially, this function is
 given by reduction modulo ``P`` for a fixed prime ``P``.  The value of ``P`` is
-made available to Python as the :attr:`modulus` attribute of
+made available to Python as the :attr:`~sys.hash_info.modulus` attribute of
 :data:`sys.hash_info`.
 
 .. impl-detail::
@@ -802,6 +805,7 @@ number, :class:`float`, or :class:`complex`::
            hash_value = -2
        return hash_value
 
+.. _bltin-boolean-values:
 .. _typebool:
 
 Boolean Type - :class:`bool`
@@ -903,9 +907,9 @@ Generator Types
 ---------------
 
 Python's :term:`generator`\s provide a convenient way to implement the iterator
-protocol.  If a container object's :meth:`__iter__` method is implemented as a
+protocol.  If a container object's :meth:`~iterator.__iter__` method is implemented as a
 generator, it will automatically return an iterator object (technically, a
-generator object) supplying the :meth:`__iter__` and :meth:`~generator.__next__`
+generator object) supplying the :meth:`!__iter__` and :meth:`~generator.__next__`
 methods.
 More information about generators can be found in :ref:`the documentation for
 the yield expression <yieldexpr>`.
@@ -1639,7 +1643,7 @@ expression support in the :mod:`re` module).
 
    The casefolding algorithm is
    `described in section 3.13 'Default Case Folding' of the Unicode Standard
-   <https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf>`__.
+   <https://www.unicode.org/versions/Unicode15.1.0/ch03.pdf>`__.
 
    .. versionadded:: 3.3
 
@@ -1803,7 +1807,7 @@ expression support in the :mod:`re` module).
    property being one of "Lm", "Lt", "Lu", "Ll", or "Lo".  Note that this is different
    from the `Alphabetic property defined in the section 4.10 'Letters, Alphabetic, and
    Ideographic' of the Unicode Standard
-   <https://www.unicode.org/versions/Unicode15.0.0/ch04.pdf>`_.
+   <https://www.unicode.org/versions/Unicode15.1.0/ch04.pdf>`_.
 
 
 .. method:: str.isascii()
@@ -1939,7 +1943,7 @@ expression support in the :mod:`re` module).
 
    The lowercasing algorithm used is
    `described in section 3.13 'Default Case Folding' of the Unicode Standard
-   <https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf>`__.
+   <https://www.unicode.org/versions/Unicode15.1.0/ch03.pdf>`__.
 
 
 .. method:: str.lstrip([chars])
@@ -2014,11 +2018,14 @@ expression support in the :mod:`re` module).
    .. versionadded:: 3.9
 
 
-.. method:: str.replace(old, new[, count])
+.. method:: str.replace(old, new, count=-1)
 
    Return a copy of the string with all occurrences of substring *old* replaced by
-   *new*.  If the optional argument *count* is given, only the first *count*
-   occurrences are replaced.
+   *new*.  If *count* is given, only the first *count* occurrences are replaced.
+   If *count* is not specified or ``-1``, then all occurrences are replaced.
+
+   .. versionchanged:: 3.13
+      *count* is now supported as a keyword argument.
 
 
 .. method:: str.rfind(sub[, start[, end]])
@@ -2261,7 +2268,7 @@ expression support in the :mod:`re` module).
 
    Return a copy of the string in which each character has been mapped through
    the given translation table.  The table must be an object that implements
-   indexing via :meth:`__getitem__`, typically a :term:`mapping` or
+   indexing via :meth:`~object.__getitem__`, typically a :term:`mapping` or
    :term:`sequence`.  When indexed by a Unicode ordinal (an integer), the
    table object can do any of the following: return a Unicode ordinal or a
    string, to map the character to one or more other characters; return
@@ -2285,7 +2292,7 @@ expression support in the :mod:`re` module).
 
    The uppercasing algorithm used is
    `described in section 3.13 'Default Case Folding' of the Unicode Standard
-   <https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf>`__.
+   <https://www.unicode.org/versions/Unicode15.1.0/ch03.pdf>`__.
 
 
 .. method:: str.zfill(width)
@@ -3666,7 +3673,7 @@ The conversion types are:
 +------------+-----------------------------------------------------+-------+
 | ``'b'``    | Bytes (any object that follows the                  | \(5)  |
 |            | :ref:`buffer protocol <bufferobjects>` or has       |       |
-|            | :meth:`__bytes__`).                                 |       |
+|            | :meth:`~object.__bytes__`).                         |       |
 +------------+-----------------------------------------------------+-------+
 | ``'s'``    | ``'s'`` is an alias for ``'b'`` and should only     | \(6)  |
 |            | be used for Python2/3 code bases.                   |       |
@@ -3950,7 +3957,7 @@ copying.
          >>> m = memoryview(bytearray(b'abc'))
          >>> mm = m.toreadonly()
          >>> mm.tolist()
-         [89, 98, 99]
+         [97, 98, 99]
          >>> mm[0] = 42
          Traceback (most recent call last):
            File "<stdin>", line 1, in <module>
@@ -4006,6 +4013,7 @@ copying.
       :mod:`struct` syntax. One of the formats must be a byte format
       ('B', 'b' or 'c'). The byte length of the result must be the same
       as the original length.
+      Note that all byte lengths may depend on the operating system.
 
       Cast 1D/long to 1D/unsigned bytes::
 
@@ -4036,8 +4044,8 @@ copying.
          >>> x = memoryview(b)
          >>> x[0] = b'a'
          Traceback (most recent call last):
-           File "<stdin>", line 1, in <module>
-         ValueError: memoryview: invalid value for format "B"
+           ...
+         TypeError: memoryview: invalid type for format 'B'
          >>> y = x.cast('c')
          >>> y[0] = b'a'
          >>> b
@@ -4403,7 +4411,8 @@ The constructors for both classes work the same:
    :meth:`symmetric_difference_update` methods will accept any iterable as an
    argument.
 
-   Note, the *elem* argument to the :meth:`__contains__`, :meth:`remove`, and
+   Note, the *elem* argument to the :meth:`~object.__contains__`,
+   :meth:`remove`, and
    :meth:`discard` methods may be a set.  To support searching for an equivalent
    frozenset, a temporary one is created from *elem*.
 
@@ -4748,14 +4757,17 @@ support membership tests:
 
    .. versionadded:: 3.10
 
-Keys views are set-like since their entries are unique and :term:`hashable`.  If all
-values are hashable, so that ``(key, value)`` pairs are unique and hashable,
-then the items view is also set-like.  (Values views are not treated as set-like
+Keys views are set-like since their entries are unique and :term:`hashable`.
+Items views also have set-like operations since the (key, value) pairs
+are unique and the keys are hashable.
+If all values in an items view are hashable as well,
+then the items view can interoperate with other sets.
+(Values views are not treated as set-like
 since the entries are generally not unique.)  For set-like views, all of the
 operations defined for the abstract base class :class:`collections.abc.Set` are
 available (for example, ``==``, ``<``, or ``^``).  While using set operators,
-set-like views accept any iterable as the other operand, unlike sets which only
-accept sets as the input.
+set-like views accept any iterable as the other operand,
+unlike sets which only accept sets as the input.
 
 An example of dictionary view usage::
 
@@ -4786,10 +4798,10 @@ An example of dictionary view usage::
    >>> # set operations
    >>> keys & {'eggs', 'bacon', 'salad'}
    {'bacon'}
-   >>> keys ^ {'sausage', 'juice'}
-   {'juice', 'sausage', 'bacon', 'spam'}
-   >>> keys | ['juice', 'juice', 'juice']
-   {'juice', 'sausage', 'bacon', 'spam', 'eggs'}
+   >>> keys ^ {'sausage', 'juice'} == {'juice', 'sausage', 'bacon', 'spam'}
+   True
+   >>> keys | ['juice', 'juice', 'juice'] == {'bacon', 'spam', 'juice'}
+   True
 
    >>> # get back a read-only proxy for the original dictionary
    >>> values.mapping
@@ -4850,7 +4862,7 @@ before the statement body is executed and exited when the statement ends:
    The exception passed in should never be reraised explicitly - instead, this
    method should return a false value to indicate that the method completed
    successfully and does not want to suppress the raised exception. This allows
-   context management code to easily detect whether or not an :meth:`__exit__`
+   context management code to easily detect whether or not an :meth:`~object.__exit__`
    method has actually failed.
 
 Python defines several context managers to support easy thread synchronisation,
@@ -4996,8 +5008,8 @@ exception to disallow mistakes like ``dict[str][str]``::
 
    >>> dict[str][str]
    Traceback (most recent call last):
-     File "<stdin>", line 1, in <module>
-   TypeError: There are no type variables left in dict[str]
+     ...
+   TypeError: dict[str] is not a generic class
 
 However, such expressions are valid when :ref:`type variables <generics>` are
 used.  The index must have as many elements as there are type variable items
@@ -5162,6 +5174,14 @@ enables cleaner type hinting syntax compared to :data:`typing.Union`.
       def square(number: int | float) -> int | float:
           return number ** 2
 
+   .. note::
+
+      The ``|`` operand cannot be used at runtime to define unions where one or
+      more members is a forward reference. For example, ``int | "Foo"``, where
+      ``"Foo"`` is a reference to a class not yet defined, will fail at
+      runtime. For unions which include forward references, present the
+      whole expression as a string, e.g. ``"int | Foo"``.
+
 .. describe:: union_object == other
 
    Union objects can be tested for equality with other union objects.  Details:
@@ -5195,13 +5215,15 @@ enables cleaner type hinting syntax compared to :data:`typing.Union`.
       >>> isinstance("", int | str)
       True
 
-   However, union objects containing :ref:`parameterized generics
-   <types-genericalias>` cannot be used::
+   However, :ref:`parameterized generics <types-genericalias>` in
+   union objects cannot be checked::
 
-      >>> isinstance(1, int | list[int])
+      >>> isinstance(1, int | list[int])  # short-circuit evaluation
+      True
+      >>> isinstance([1], int | list[int])
       Traceback (most recent call last):
-        File "<stdin>", line 1, in <module>
-      TypeError: isinstance() argument 2 cannot contain a parameterized generic
+        ...
+      TypeError: isinstance() argument 2 cannot be a parameterized generic
 
 The user-exposed type for the union object can be accessed from
 :data:`types.UnionType` and used for :func:`isinstance` checks.  An object cannot be
@@ -5216,9 +5238,11 @@ instantiated from the type::
    TypeError: cannot create 'types.UnionType' instances
 
 .. note::
-   The :meth:`__or__` method for type objects was added to support the syntax
-   ``X | Y``.  If a metaclass implements :meth:`__or__`, the Union may
-   override it::
+   The :meth:`!__or__` method for type objects was added to support the syntax
+   ``X | Y``.  If a metaclass implements :meth:`!__or__`, the Union may
+   override it:
+
+   .. doctest::
 
       >>> class M(type):
       ...     def __or__(self, other):
@@ -5230,7 +5254,7 @@ instantiated from the type::
       >>> C | int
       'Hello'
       >>> int | C
-      int | __main__.C
+      int | C
 
 .. seealso::
 
@@ -5304,25 +5328,30 @@ Methods
 .. index:: pair: object; method
 
 Methods are functions that are called using the attribute notation. There are
-two flavors: built-in methods (such as :meth:`append` on lists) and class
-instance methods.  Built-in methods are described with the types that support
-them.
+two flavors: :ref:`built-in methods <builtin-methods>` (such as :meth:`append`
+on lists) and :ref:`class instance method <instance-methods>`.
+Built-in methods are described with the types that support them.
 
 If you access a method (a function defined in a class namespace) through an
 instance, you get a special object: a :dfn:`bound method` (also called
-:dfn:`instance method`) object. When called, it will add the ``self`` argument
+:ref:`instance method <instance-methods>`) object. When called, it will add
+the ``self`` argument
 to the argument list.  Bound methods have two special read-only attributes:
-``m.__self__`` is the object on which the method operates, and ``m.__func__`` is
+:attr:`m.__self__ <method.__self__>` is the object on which the method
+operates, and :attr:`m.__func__ <method.__func__>` is
 the function implementing the method.  Calling ``m(arg-1, arg-2, ..., arg-n)``
 is completely equivalent to calling ``m.__func__(m.__self__, arg-1, arg-2, ...,
 arg-n)``.
 
-Like function objects, bound method objects support getting arbitrary
+Like :ref:`function objects <user-defined-funcs>`, bound method objects support
+getting arbitrary
 attributes.  However, since method attributes are actually stored on the
-underlying function object (``meth.__func__``), setting method attributes on
+underlying function object (:attr:`method.__func__`), setting method attributes on
 bound methods is disallowed.  Attempting to set an attribute on a method
 results in an :exc:`AttributeError` being raised.  In order to set a method
-attribute, you need to explicitly set it on the underlying function object::
+attribute, you need to explicitly set it on the underlying function object:
+
+.. doctest::
 
    >>> class C:
    ...     def method(self):
@@ -5337,7 +5366,7 @@ attribute, you need to explicitly set it on the underlying function object::
    >>> c.method.whoami
    'my name is method'
 
-See :ref:`types` for more information.
+See :ref:`instance-methods` for more information.
 
 
 .. index:: object; code, code object
@@ -5476,6 +5505,14 @@ types, where they are relevant.  Some of these are not reported by the
    .. versionadded:: 3.3
 
 
+.. attribute:: definition.__type_params__
+
+   The :ref:`type parameters <type-params>` of generic classes, functions,
+   and :ref:`type aliases <type-aliases>`.
+
+   .. versionadded:: 3.12
+
+
 .. attribute:: class.__mro__
 
    This attribute is a tuple of classes that are considered when looking for
@@ -5496,7 +5533,7 @@ types, where they are relevant.  Some of these are not reported by the
    definition order.  Example::
 
       >>> int.__subclasses__()
-      [<class 'bool'>]
+      [<class 'bool'>, <enum 'IntEnum'>, <flag 'IntFlag'>, <class 're._constants._NamedIntConstant'>]
 
 
 .. _int_max_str_digits:
@@ -5532,7 +5569,7 @@ When an operation would exceed the limit, a :exc:`ValueError` is raised:
    >>> _ = int('2' * 5432)
    Traceback (most recent call last):
    ...
-   ValueError: Exceeds the limit (4300 digits) for integer string conversion: value has 5432 digits; use sys.set_int_max_str_digits() to increase the limit.
+   ValueError: Exceeds the limit (4300 digits) for integer string conversion: value has 5432 digits; use sys.set_int_max_str_digits() to increase the limit
    >>> i = int('2' * 4300)
    >>> len(str(i))
    4300
@@ -5540,7 +5577,7 @@ When an operation would exceed the limit, a :exc:`ValueError` is raised:
    >>> len(str(i_squared))
    Traceback (most recent call last):
    ...
-   ValueError: Exceeds the limit (4300 digits) for integer string conversion: value has 8599 digits; use sys.set_int_max_str_digits() to increase the limit.
+   ValueError: Exceeds the limit (4300 digits) for integer string conversion; use sys.set_int_max_str_digits() to increase the limit
    >>> len(hex(i_squared))
    7144
    >>> assert int(hex(i_squared), base=16) == i*i  # Hexadecimal is unlimited.
@@ -5610,7 +5647,7 @@ From code, you can inspect the current limit and set a new one using these
   a getter and setter for the interpreter-wide limit. Subinterpreters have
   their own limit.
 
-Information about the default and minimum can be found in :attr:`sys.int_info`:
+Information about the default and minimum can be found in :data:`sys.int_info`:
 
 * :data:`sys.int_info.default_max_str_digits <sys.int_info>` is the compiled-in
   default limit.
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 26b3f5000634f5..262b785bbcbfc1 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -206,15 +206,15 @@ literal text, it can be escaped by doubling: ``{{`` and ``}}``.
 
 The grammar for a replacement field is as follows:
 
-   .. productionlist:: format-string
-      replacement_field: "{" [`field_name`] ["!" `conversion`] [":" `format_spec`] "}"
-      field_name: arg_name ("." `attribute_name` | "[" `element_index` "]")*
-      arg_name: [`identifier` | `digit`+]
-      attribute_name: `identifier`
-      element_index: `digit`+ | `index_string`
-      index_string: <any source character except "]"> +
-      conversion: "r" | "s" | "a"
-      format_spec: <described in the next section>
+.. productionlist:: format-string
+   replacement_field: "{" [`field_name`] ["!" `conversion`] [":" `format_spec`] "}"
+   field_name: arg_name ("." `attribute_name` | "[" `element_index` "]")*
+   arg_name: [`identifier` | `digit`+]
+   attribute_name: `identifier`
+   element_index: `digit`+ | `index_string`
+   index_string: <any source character except "]"> +
+   conversion: "r" | "s" | "a"
+   format_spec: <described in the next section>
 
 In less formal terms, the replacement field can start with a *field_name* that specifies
 the object whose value is to be formatted and inserted
@@ -227,7 +227,9 @@ See also the :ref:`formatspec` section.
 
 The *field_name* itself begins with an *arg_name* that is either a number or a
 keyword.  If it's a number, it refers to a positional argument, and if it's a keyword,
-it refers to a named keyword argument.  If the numerical arg_names in a format string
+it refers to a named keyword argument. An *arg_name* is treated as a number if
+a call to :meth:`str.isdecimal` on the string would return true.
+If the numerical arg_names in a format string
 are 0, 1, 2, ... in sequence, they can all be omitted (not just some)
 and the numbers 0, 1, 2, ... will be automatically inserted in that order.
 Because *arg_name* is not quote-delimited, it is not possible to specify arbitrary
@@ -330,30 +332,30 @@ affect the :func:`format` function.
 
 The meaning of the various alignment options is as follows:
 
-   .. index::
-      single: < (less); in string formatting
-      single: > (greater); in string formatting
-      single: = (equals); in string formatting
-      single: ^ (caret); in string formatting
-
-   +---------+----------------------------------------------------------+
-   | Option  | Meaning                                                  |
-   +=========+==========================================================+
-   | ``'<'`` | Forces the field to be left-aligned within the available |
-   |         | space (this is the default for most objects).            |
-   +---------+----------------------------------------------------------+
-   | ``'>'`` | Forces the field to be right-aligned within the          |
-   |         | available space (this is the default for numbers).       |
-   +---------+----------------------------------------------------------+
-   | ``'='`` | Forces the padding to be placed after the sign (if any)  |
-   |         | but before the digits.  This is used for printing fields |
-   |         | in the form '+000000120'. This alignment option is only  |
-   |         | valid for numeric types.  It becomes the default for     |
-   |         | numbers when '0' immediately precedes the field width.   |
-   +---------+----------------------------------------------------------+
-   | ``'^'`` | Forces the field to be centered within the available     |
-   |         | space.                                                   |
-   +---------+----------------------------------------------------------+
+.. index::
+   single: < (less); in string formatting
+   single: > (greater); in string formatting
+   single: = (equals); in string formatting
+   single: ^ (caret); in string formatting
+
++---------+----------------------------------------------------------+
+| Option  | Meaning                                                  |
++=========+==========================================================+
+| ``'<'`` | Forces the field to be left-aligned within the available |
+|         | space (this is the default for most objects).            |
++---------+----------------------------------------------------------+
+| ``'>'`` | Forces the field to be right-aligned within the          |
+|         | available space (this is the default for numbers).       |
++---------+----------------------------------------------------------+
+| ``'='`` | Forces the padding to be placed after the sign (if any)  |
+|         | but before the digits.  This is used for printing fields |
+|         | in the form '+000000120'. This alignment option is only  |
+|         | valid for numeric types.  It becomes the default for     |
+|         | numbers when '0' immediately precedes the field width.   |
++---------+----------------------------------------------------------+
+| ``'^'`` | Forces the field to be centered within the available     |
+|         | space.                                                   |
++---------+----------------------------------------------------------+
 
 Note that unless a minimum field width is defined, the field width will always
 be the same size as the data to fill it, so that the alignment option has no
@@ -362,23 +364,23 @@ meaning in this case.
 The *sign* option is only valid for number types, and can be one of the
 following:
 
-   .. index::
-      single: + (plus); in string formatting
-      single: - (minus); in string formatting
-      single: space; in string formatting
-
-   +---------+----------------------------------------------------------+
-   | Option  | Meaning                                                  |
-   +=========+==========================================================+
-   | ``'+'`` | indicates that a sign should be used for both            |
-   |         | positive as well as negative numbers.                    |
-   +---------+----------------------------------------------------------+
-   | ``'-'`` | indicates that a sign should be used only for negative   |
-   |         | numbers (this is the default behavior).                  |
-   +---------+----------------------------------------------------------+
-   | space   | indicates that a leading space should be used on         |
-   |         | positive numbers, and a minus sign on negative numbers.  |
-   +---------+----------------------------------------------------------+
+.. index::
+   single: + (plus); in string formatting
+   single: - (minus); in string formatting
+   single: space; in string formatting
+
++---------+----------------------------------------------------------+
+| Option  | Meaning                                                  |
++=========+==========================================================+
+| ``'+'`` | indicates that a sign should be used for both            |
+|         | positive as well as negative numbers.                    |
++---------+----------------------------------------------------------+
+| ``'-'`` | indicates that a sign should be used only for negative   |
+|         | numbers (this is the default behavior).                  |
++---------+----------------------------------------------------------+
+| space   | indicates that a leading space should be used on         |
+|         | positive numbers, and a minus sign on negative numbers.  |
++---------+----------------------------------------------------------+
 
 
 .. index:: single: z; in string formatting
diff --git a/Doc/library/stringprep.rst b/Doc/library/stringprep.rst
index 5cfb533d802db4..c6d78a356d97bc 100644
--- a/Doc/library/stringprep.rst
+++ b/Doc/library/stringprep.rst
@@ -27,7 +27,7 @@ procedure are part of the profile. One example of a ``stringprep`` profile is
 ``nameprep``, which is used for internationalized domain names.
 
 The module :mod:`stringprep` only exposes the tables from :rfc:`3454`. As these
-tables would be very large to represent them as dictionaries or lists, the
+tables would be very large to represent as dictionaries or lists, the
 module uses the Unicode character database internally. The module source code
 itself was generated using the ``mkstringprep.py`` utility.
 
diff --git a/Doc/library/struct.rst b/Doc/library/struct.rst
index 78fd6e397ae635..e2e6fc542e3e67 100644
--- a/Doc/library/struct.rst
+++ b/Doc/library/struct.rst
@@ -1,6 +1,10 @@
 :mod:`struct` --- Interpret bytes as packed binary data
 =======================================================
 
+.. testsetup:: *
+
+   from struct import *
+
 .. module:: struct
    :synopsis: Interpret bytes as packed binary data.
 
@@ -231,9 +235,9 @@ platform-dependent.
 | ``Q``  | :c:expr:`unsigned long   | integer            | 8              | \(2)       |
 |        | long`                    |                    |                |            |
 +--------+--------------------------+--------------------+----------------+------------+
-| ``n``  | :c:expr:`ssize_t`        | integer            |                | \(3)       |
+| ``n``  | :c:type:`ssize_t`        | integer            |                | \(3)       |
 +--------+--------------------------+--------------------+----------------+------------+
-| ``N``  | :c:expr:`size_t`         | integer            |                | \(3)       |
+| ``N``  | :c:type:`size_t`         | integer            |                | \(3)       |
 +--------+--------------------------+--------------------+----------------+------------+
 | ``e``  | \(6)                     | float              | 2              | \(4)       |
 +--------+--------------------------+--------------------+----------------+------------+
@@ -266,11 +270,11 @@ Notes:
 
 (2)
    When attempting to pack a non-integer using any of the integer conversion
-   codes, if the non-integer has a :meth:`__index__` method then that method is
+   codes, if the non-integer has a :meth:`~object.__index__` method then that method is
    called to convert the argument to an integer before packing.
 
    .. versionchanged:: 3.2
-      Added use of the :meth:`__index__` method for non-integers.
+      Added use of the :meth:`~object.__index__` method for non-integers.
 
 (3)
    The ``'n'`` and ``'N'`` conversion codes are only available for the native
@@ -597,6 +601,11 @@ The :mod:`struct` module also defines the following type:
       The calculated size of the struct (and hence of the bytes object produced
       by the :meth:`pack` method) corresponding to :attr:`format`.
 
+   .. versionchanged:: 3.13 The *repr()* of structs has changed.  It
+      is now:
+
+         >>> Struct('i')
+         Struct('i')
 
 .. _half precision format: https://en.wikipedia.org/wiki/Half-precision_floating-point_format
 
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 53dfbf827260c9..d6b892a7ed957d 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -57,10 +57,13 @@ underlying :class:`Popen` interface can be used directly.
    and combine both streams into one, use ``stdout=PIPE`` and ``stderr=STDOUT``
    instead of *capture_output*.
 
-   The *timeout* argument is passed to :meth:`Popen.communicate`. If the timeout
-   expires, the child process will be killed and waited for.  The
-   :exc:`TimeoutExpired` exception will be re-raised after the child process
-   has terminated.
+   A *timeout* may be specified in seconds, it is internally passed on to
+   :meth:`Popen.communicate`. If the timeout expires, the child process will be
+   killed and waited for. The :exc:`TimeoutExpired` exception will be
+   re-raised after the child process has terminated. The initial process
+   creation itself cannot be interrupted on many platform APIs so you are not
+   guaranteed to see a timeout exception until at least after however long
+   process creation takes.
 
    The *input* argument is passed to :meth:`Popen.communicate` and thus to the
    subprocess's stdin.  If used it must be a byte sequence, or a string if
@@ -462,9 +465,9 @@ functions.
    :func:`open` function when creating the stdin/stdout/stderr pipe
    file objects:
 
-   - :const:`0` means unbuffered (read and write are one
+   - ``0`` means unbuffered (read and write are one
      system call and can return short)
-   - :const:`1` means line buffered
+   - ``1`` means line buffered
      (only usable if ``text=True`` or ``universal_newlines=True``)
    - any other positive value means use a buffer of approximately that
      size
@@ -474,7 +477,7 @@ functions.
    .. versionchanged:: 3.3.1
       *bufsize* now defaults to -1 to enable buffering by default to match the
       behavior that most code expects.  In versions prior to Python 3.2.4 and
-      3.3.1 it incorrectly defaulted to :const:`0` which was unbuffered
+      3.3.1 it incorrectly defaulted to ``0`` which was unbuffered
       and allowed short reads.  This was unintentional and did not match the
       behavior of Python 2 as most code expected.
 
@@ -538,8 +541,8 @@ functions.
       :exc:`RuntimeError`. The new restriction may affect applications that
       are deployed in mod_wsgi, uWSGI, and other embedded environments.
 
-   If *close_fds* is true, all file descriptors except :const:`0`, :const:`1` and
-   :const:`2` will be closed before the child process is executed.  Otherwise
+   If *close_fds* is true, all file descriptors except ``0``, ``1`` and
+   ``2`` will be closed before the child process is executed.  Otherwise
    when *close_fds* is false, file descriptors obey their inheritable flag
    as described in :ref:`fd_inheritance`.
 
@@ -663,18 +666,18 @@ functions.
    passed to the underlying ``CreateProcess`` function.
    *creationflags*, if given, can be one or more of the following flags:
 
-      * :data:`CREATE_NEW_CONSOLE`
-      * :data:`CREATE_NEW_PROCESS_GROUP`
-      * :data:`ABOVE_NORMAL_PRIORITY_CLASS`
-      * :data:`BELOW_NORMAL_PRIORITY_CLASS`
-      * :data:`HIGH_PRIORITY_CLASS`
-      * :data:`IDLE_PRIORITY_CLASS`
-      * :data:`NORMAL_PRIORITY_CLASS`
-      * :data:`REALTIME_PRIORITY_CLASS`
-      * :data:`CREATE_NO_WINDOW`
-      * :data:`DETACHED_PROCESS`
-      * :data:`CREATE_DEFAULT_ERROR_MODE`
-      * :data:`CREATE_BREAKAWAY_FROM_JOB`
+   * :data:`CREATE_NEW_CONSOLE`
+   * :data:`CREATE_NEW_PROCESS_GROUP`
+   * :data:`ABOVE_NORMAL_PRIORITY_CLASS`
+   * :data:`BELOW_NORMAL_PRIORITY_CLASS`
+   * :data:`HIGH_PRIORITY_CLASS`
+   * :data:`IDLE_PRIORITY_CLASS`
+   * :data:`NORMAL_PRIORITY_CLASS`
+   * :data:`REALTIME_PRIORITY_CLASS`
+   * :data:`CREATE_NO_WINDOW`
+   * :data:`DETACHED_PROCESS`
+   * :data:`CREATE_DEFAULT_ERROR_MODE`
+   * :data:`CREATE_BREAKAWAY_FROM_JOB`
 
    *pipesize* can be used to change the size of the pipe when
    :data:`PIPE` is used for *stdin*, *stdout* or *stderr*. The size of the pipe
@@ -734,13 +737,13 @@ arguments.
 code.
 
 All of the functions and methods that accept a *timeout* parameter, such as
-:func:`call` and :meth:`Popen.communicate` will raise :exc:`TimeoutExpired` if
+:func:`run` and :meth:`Popen.communicate` will raise :exc:`TimeoutExpired` if
 the timeout expires before the process exits.
 
 Exceptions defined in this module all inherit from :exc:`SubprocessError`.
 
-   .. versionadded:: 3.3
-      The :exc:`SubprocessError` base class was added.
+.. versionadded:: 3.3
+   The :exc:`SubprocessError` base class was added.
 
 .. _subprocess-security:
 
@@ -788,9 +791,10 @@ Instances of the :class:`Popen` class have the following methods:
 
    .. note::
 
-      The function is implemented using a busy loop (non-blocking call and
-      short sleeps). Use the :mod:`asyncio` module for an asynchronous wait:
-      see :class:`asyncio.create_subprocess_exec`.
+      When the ``timeout`` parameter is not ``None``, then (on POSIX) the
+      function is implemented using a busy loop (non-blocking call and short
+      sleeps). Use the :mod:`asyncio` module for an asynchronous wait: see
+      :class:`asyncio.create_subprocess_exec`.
 
    .. versionchanged:: 3.3
       *timeout* was added.
@@ -1607,7 +1611,7 @@ improves performance.
 
 If you ever encounter a presumed highly unusual situation where you need to
 prevent ``vfork()`` from being used by Python, you can set the
-:attr:`subprocess._USE_VFORK` attribute to a false value.
+:const:`subprocess._USE_VFORK` attribute to a false value.
 
 ::
 
@@ -1615,7 +1619,7 @@ prevent ``vfork()`` from being used by Python, you can set the
 
 Setting this has no impact on use of ``posix_spawn()`` which could use
 ``vfork()`` internally within its libc implementation.  There is a similar
-:attr:`subprocess._USE_POSIX_SPAWN` attribute if you need to prevent use of
+:const:`subprocess._USE_POSIX_SPAWN` attribute if you need to prevent use of
 that.
 
 ::
diff --git a/Doc/library/sunau.rst b/Doc/library/sunau.rst
deleted file mode 100644
index c7a38d96ade131..00000000000000
--- a/Doc/library/sunau.rst
+++ /dev/null
@@ -1,274 +0,0 @@
-:mod:`sunau` --- Read and write Sun AU files
-============================================
-
-.. module:: sunau
-   :synopsis: Provide an interface to the Sun AU sound format.
-   :deprecated:
-
-.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
-
-**Source code:** :source:`Lib/sunau.py`
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`sunau` module is deprecated
-   (see :pep:`PEP 594 <594#sunau>` for details).
-
---------------
-
-The :mod:`sunau` module provides a convenient interface to the Sun AU sound
-format.  Note that this module is interface-compatible with the modules
-:mod:`aifc` and :mod:`wave`.
-
-An audio file consists of a header followed by the data.  The fields of the
-header are:
-
-+---------------+-----------------------------------------------+
-| Field         | Contents                                      |
-+===============+===============================================+
-| magic word    | The four bytes ``.snd``.                      |
-+---------------+-----------------------------------------------+
-| header size   | Size of the header, including info, in bytes. |
-+---------------+-----------------------------------------------+
-| data size     | Physical size of the data, in bytes.          |
-+---------------+-----------------------------------------------+
-| encoding      | Indicates how the audio samples are encoded.  |
-+---------------+-----------------------------------------------+
-| sample rate   | The sampling rate.                            |
-+---------------+-----------------------------------------------+
-| # of channels | The number of channels in the samples.        |
-+---------------+-----------------------------------------------+
-| info          | ASCII string giving a description of the      |
-|               | audio file (padded with null bytes).          |
-+---------------+-----------------------------------------------+
-
-Apart from the info field, all header fields are 4 bytes in size. They are all
-32-bit unsigned integers encoded in big-endian byte order.
-
-The :mod:`sunau` module defines the following functions:
-
-
-.. function:: open(file, mode)
-
-   If *file* is a string, open the file by that name, otherwise treat it as a
-   seekable file-like object. *mode* can be any of
-
-   ``'r'``
-      Read only mode.
-
-   ``'w'``
-      Write only mode.
-
-   Note that it does not allow read/write files.
-
-   A *mode* of ``'r'`` returns an :class:`AU_read` object, while a *mode* of ``'w'``
-   or ``'wb'`` returns an :class:`AU_write` object.
-
-
-The :mod:`sunau` module defines the following exception:
-
-.. exception:: Error
-
-   An error raised when something is impossible because of Sun AU specs or
-   implementation deficiency.
-
-
-The :mod:`sunau` module defines the following data items:
-
-.. data:: AUDIO_FILE_MAGIC
-
-   An integer every valid Sun AU file begins with, stored in big-endian form.  This
-   is the string ``.snd`` interpreted as an integer.
-
-
-.. data:: AUDIO_FILE_ENCODING_MULAW_8
-          AUDIO_FILE_ENCODING_LINEAR_8
-          AUDIO_FILE_ENCODING_LINEAR_16
-          AUDIO_FILE_ENCODING_LINEAR_24
-          AUDIO_FILE_ENCODING_LINEAR_32
-          AUDIO_FILE_ENCODING_ALAW_8
-
-   Values of the encoding field from the AU header which are supported by this
-   module.
-
-
-.. data:: AUDIO_FILE_ENCODING_FLOAT
-          AUDIO_FILE_ENCODING_DOUBLE
-          AUDIO_FILE_ENCODING_ADPCM_G721
-          AUDIO_FILE_ENCODING_ADPCM_G722
-          AUDIO_FILE_ENCODING_ADPCM_G723_3
-          AUDIO_FILE_ENCODING_ADPCM_G723_5
-
-   Additional known values of the encoding field from the AU header, but which are
-   not supported by this module.
-
-
-.. _au-read-objects:
-
-AU_read Objects
----------------
-
-AU_read objects, as returned by :func:`.open` above, have the following methods:
-
-
-.. method:: AU_read.close()
-
-   Close the stream, and make the instance unusable. (This is  called automatically
-   on deletion.)
-
-
-.. method:: AU_read.getnchannels()
-
-   Returns number of audio channels (1 for mono, 2 for stereo).
-
-
-.. method:: AU_read.getsampwidth()
-
-   Returns sample width in bytes.
-
-
-.. method:: AU_read.getframerate()
-
-   Returns sampling frequency.
-
-
-.. method:: AU_read.getnframes()
-
-   Returns number of audio frames.
-
-
-.. method:: AU_read.getcomptype()
-
-   Returns compression type. Supported compression types are ``'ULAW'``, ``'ALAW'``
-   and ``'NONE'``.
-
-
-.. method:: AU_read.getcompname()
-
-   Human-readable version of :meth:`getcomptype`.  The supported types have the
-   respective names ``'CCITT G.711 u-law'``, ``'CCITT G.711 A-law'`` and ``'not
-   compressed'``.
-
-
-.. method:: AU_read.getparams()
-
-   Returns a :func:`~collections.namedtuple` ``(nchannels, sampwidth,
-   framerate, nframes, comptype, compname)``, equivalent to output of the
-   :meth:`get\*` methods.
-
-
-.. method:: AU_read.readframes(n)
-
-   Reads and returns at most *n* frames of audio, as a :class:`bytes` object.  The data
-   will be returned in linear format.  If the original data is in u-LAW format, it
-   will be converted.
-
-
-.. method:: AU_read.rewind()
-
-   Rewind the file pointer to the beginning of the audio stream.
-
-The following two methods define a term "position" which is compatible between
-them, and is otherwise implementation dependent.
-
-
-.. method:: AU_read.setpos(pos)
-
-   Set the file pointer to the specified position.  Only values returned from
-   :meth:`tell` should be used for *pos*.
-
-
-.. method:: AU_read.tell()
-
-   Return current file pointer position.  Note that the returned value has nothing
-   to do with the actual position in the file.
-
-The following two functions are defined for compatibility with the  :mod:`aifc`,
-and don't do anything interesting.
-
-
-.. method:: AU_read.getmarkers()
-
-   Returns ``None``.
-
-
-.. method:: AU_read.getmark(id)
-
-   Raise an error.
-
-
-.. _au-write-objects:
-
-AU_write Objects
-----------------
-
-AU_write objects, as returned by :func:`.open` above, have the following methods:
-
-
-.. method:: AU_write.setnchannels(n)
-
-   Set the number of channels.
-
-
-.. method:: AU_write.setsampwidth(n)
-
-   Set the sample width (in bytes.)
-
-   .. versionchanged:: 3.4
-      Added support for 24-bit samples.
-
-
-.. method:: AU_write.setframerate(n)
-
-   Set the frame rate.
-
-
-.. method:: AU_write.setnframes(n)
-
-   Set the number of frames. This can be later changed, when and if more  frames
-   are written.
-
-
-.. method:: AU_write.setcomptype(type, name)
-
-   Set the compression type and description. Only ``'NONE'`` and ``'ULAW'`` are
-   supported on output.
-
-
-.. method:: AU_write.setparams(tuple)
-
-   The *tuple* should be ``(nchannels, sampwidth, framerate, nframes, comptype,
-   compname)``, with values valid for the :meth:`set\*` methods.  Set all
-   parameters.
-
-
-.. method:: AU_write.tell()
-
-   Return current position in the file, with the same disclaimer for the
-   :meth:`AU_read.tell` and :meth:`AU_read.setpos` methods.
-
-
-.. method:: AU_write.writeframesraw(data)
-
-   Write audio frames, without correcting *nframes*.
-
-   .. versionchanged:: 3.4
-      Any :term:`bytes-like object` is now accepted.
-
-
-.. method:: AU_write.writeframes(data)
-
-   Write audio frames and make sure *nframes* is correct.
-
-   .. versionchanged:: 3.4
-      Any :term:`bytes-like object` is now accepted.
-
-
-.. method:: AU_write.close()
-
-   Make sure *nframes* is correct, and close the file.
-
-   This method is called upon deletion.
-
-Note that it is invalid to set any parameters after calling  :meth:`writeframes`
-or :meth:`writeframesraw`.
-
diff --git a/Doc/library/superseded.rst b/Doc/library/superseded.rst
index aaf66ea121d39c..17bfa66f043302 100644
--- a/Doc/library/superseded.rst
+++ b/Doc/library/superseded.rst
@@ -4,29 +4,12 @@
 Superseded Modules
 ******************
 
-The modules described in this chapter are deprecated and only kept for
+The modules described in this chapter are deprecated or :term:`soft deprecated` and only kept for
 backwards compatibility. They have been superseded by other modules.
 
 
 .. toctree::
+   :maxdepth: 1
 
-   aifc.rst
-   audioop.rst
-   cgi.rst
-   cgitb.rst
-   chunk.rst
-   crypt.rst
-   imghdr.rst
-   mailcap.rst
-   msilib.rst
-   nis.rst
-   nntplib.rst
+   getopt.rst
    optparse.rst
-   ossaudiodev.rst
-   pipes.rst
-   sndhdr.rst
-   spwd.rst
-   sunau.rst
-   telnetlib.rst
-   uu.rst
-   xdrlib.rst
diff --git a/Doc/library/symtable.rst b/Doc/library/symtable.rst
index 65ff5bfe7abd61..46159dcef940e7 100644
--- a/Doc/library/symtable.rst
+++ b/Doc/library/symtable.rst
@@ -38,7 +38,13 @@ Examining Symbol Tables
    .. method:: get_type()
 
       Return the type of the symbol table.  Possible values are ``'class'``,
-      ``'module'``, and ``'function'``.
+      ``'module'``, ``'function'``, ``'annotation'``, ``'TypeVar bound'``,
+      ``'type alias'``, and ``'type parameter'``. The latter four refer to
+      different flavors of :ref:`annotation scopes <annotation-scopes>`.
+
+      .. versionchanged:: 3.12
+         Added ``'annotation'``,  ``'TypeVar bound'``, ``'type alias'``,
+         and ``'type parameter'`` as possible return values.
 
    .. method:: get_id()
 
@@ -49,6 +55,10 @@ Examining Symbol Tables
       Return the table's name.  This is the name of the class if the table is
       for a class, the name of the function if the table is for a function, or
       ``'top'`` if the table is global (:meth:`get_type` returns ``'module'``).
+      For type parameter scopes (which are used for generic classes, functions,
+      and type aliases), it is the name of the underlying class, function, or
+      type alias. For type alias scopes, it is the name of the type alias.
+      For :class:`~typing.TypeVar` bound scopes, it is the name of the ``TypeVar``.
 
    .. method:: get_lineno()
 
@@ -197,3 +207,21 @@ Examining Symbol Tables
 
       Return the namespace bound to this name. If more than one or no namespace
       is bound to this name, a :exc:`ValueError` is raised.
+
+
+.. _symtable-cli:
+
+Command-Line Usage
+------------------
+
+.. versionadded:: 3.13
+
+The :mod:`symtable` module can be executed as a script from the command line.
+
+.. code-block:: sh
+
+   python -m symtable [infile...]
+
+Symbol tables are generated for the specified Python source files and
+dumped to stdout.
+If no input file is specified, the content is read from stdin.
diff --git a/Doc/library/sys.monitoring.rst b/Doc/library/sys.monitoring.rst
new file mode 100644
index 00000000000000..762581b7eda7f1
--- /dev/null
+++ b/Doc/library/sys.monitoring.rst
@@ -0,0 +1,368 @@
+:mod:`sys.monitoring` --- Execution event monitoring
+====================================================
+
+.. module:: sys.monitoring
+   :synopsis: Access and control event monitoring
+
+.. versionadded:: 3.12
+
+-----------------
+
+.. note::
+
+    :mod:`sys.monitoring` is a namespace within the :mod:`sys` module,
+    not an independent module, so there is no need to
+    ``import sys.monitoring``, simply ``import sys`` and then use
+    ``sys.monitoring``.
+
+
+This namespace provides access to the functions and constants necessary to
+activate and control event monitoring.
+
+As programs execute, events occur that might be of interest to tools that
+monitor execution. The :mod:`sys.monitoring` namespace provides means to
+receive callbacks when events of interest occur.
+
+The monitoring API consists of three components:
+
+* `Tool identifiers`_
+* `Events`_
+* :ref:`Callbacks <callbacks>`
+
+Tool identifiers
+----------------
+
+A tool identifier is an integer and the associated name.
+Tool identifiers are used to discourage tools from interfering with each
+other and to allow multiple tools to operate at the same time.
+Currently tools are completely independent and cannot be used to
+monitor each other. This restriction may be lifted in the future.
+
+Before registering or activating events, a tool should choose an identifier.
+Identifiers are integers in the range 0 to 5 inclusive.
+
+Registering and using tools
+'''''''''''''''''''''''''''
+
+.. function:: use_tool_id(tool_id: int, name: str, /) -> None
+
+   Must be called before *tool_id* can be used.
+   *tool_id* must be in the range 0 to 5 inclusive.
+   Raises a :exc:`ValueError` if *tool_id* is in use.
+
+.. function:: free_tool_id(tool_id: int, /) -> None
+
+   Should be called once a tool no longer requires *tool_id*.
+
+.. note::
+
+   :func:`free_tool_id` will not disable global or local events associated
+   with *tool_id*, nor will it unregister any callback functions. This
+   function is only intended to be used to notify the VM that the
+   particular *tool_id* is no longer in use.
+
+.. function:: get_tool(tool_id: int, /) -> str | None
+
+   Returns the name of the tool if *tool_id* is in use,
+   otherwise it returns ``None``.
+   *tool_id* must be in the range 0 to 5 inclusive.
+
+All IDs are treated the same by the VM with regard to events, but the
+following IDs are pre-defined to make co-operation of tools easier::
+
+  sys.monitoring.DEBUGGER_ID = 0
+  sys.monitoring.COVERAGE_ID = 1
+  sys.monitoring.PROFILER_ID = 2
+  sys.monitoring.OPTIMIZER_ID = 5
+
+There is no obligation to set an ID, nor is there anything preventing a tool
+from using an ID even it is already in use.
+However, tools are encouraged to use a unique ID and respect other tools.
+
+Events
+------
+
+The following events are supported:
+
+.. monitoring-event:: BRANCH
+
+   A conditional branch is taken (or not).
+
+.. monitoring-event:: CALL
+
+   A call in Python code (event occurs before the call).
+
+.. monitoring-event:: C_RAISE
+
+   An exception raised from any callable, except for Python functions (event occurs after the exit).
+
+.. monitoring-event:: C_RETURN
+
+   Return from any callable, except for Python functions (event occurs after the return).
+
+.. monitoring-event:: EXCEPTION_HANDLED
+
+   An exception is handled.
+
+.. monitoring-event:: INSTRUCTION
+
+   A VM instruction is about to be executed.
+
+.. monitoring-event:: JUMP
+
+   An unconditional jump in the control flow graph is made.
+
+.. monitoring-event:: LINE
+
+   An instruction is about to be executed that has a different line number from the preceding instruction.
+
+.. monitoring-event:: PY_RESUME
+
+   Resumption of a Python function (for generator and coroutine functions), except for ``throw()`` calls.
+
+.. monitoring-event:: PY_RETURN
+
+   Return from a Python function (occurs immediately before the return, the callee's frame will be on the stack).
+
+.. monitoring-event:: PY_START
+
+   Start of a Python function (occurs immediately after the call, the callee's frame will be on the stack)
+
+.. monitoring-event:: PY_THROW
+
+   A Python function is resumed by a ``throw()`` call.
+
+.. monitoring-event:: PY_UNWIND
+
+   Exit from a Python function during exception unwinding.
+
+.. monitoring-event:: PY_YIELD
+
+   Yield from a Python function (occurs immediately before the yield, the callee's frame will be on the stack).
+
+.. monitoring-event:: RAISE
+
+   An exception is raised, except those that cause a :monitoring-event:`STOP_ITERATION` event.
+
+.. monitoring-event:: RERAISE
+
+   An exception is re-raised, for example at the end of a :keyword:`finally` block.
+
+.. monitoring-event:: STOP_ITERATION
+
+   An artificial :exc:`StopIteration` is raised; see `the STOP_ITERATION event`_.
+
+
+More events may be added in the future.
+
+These events are attributes of the :mod:`!sys.monitoring.events` namespace.
+Each event is represented as a power-of-2 integer constant.
+To define a set of events, simply bitwise or the individual events together.
+For example, to specify both :monitoring-event:`PY_RETURN` and :monitoring-event:`PY_START`
+events, use the expression ``PY_RETURN | PY_START``.
+
+.. monitoring-event:: NO_EVENTS
+
+    An alias for ``0`` so users can do explict comparisions like::
+
+      if get_events(DEBUGGER_ID) == NO_EVENTS:
+          ...
+
+Events are divided into three groups:
+
+Local events
+''''''''''''
+
+Local events are associated with normal execution of the program and happen
+at clearly defined locations. All local events can be disabled.
+The local events are:
+
+* :monitoring-event:`PY_START`
+* :monitoring-event:`PY_RESUME`
+* :monitoring-event:`PY_RETURN`
+* :monitoring-event:`PY_YIELD`
+* :monitoring-event:`CALL`
+* :monitoring-event:`LINE`
+* :monitoring-event:`INSTRUCTION`
+* :monitoring-event:`JUMP`
+* :monitoring-event:`BRANCH`
+* :monitoring-event:`STOP_ITERATION`
+
+Ancillary events
+''''''''''''''''
+
+Ancillary events can be monitored like other events, but are controlled
+by another event:
+
+* :monitoring-event:`C_RAISE`
+* :monitoring-event:`C_RETURN`
+
+The :monitoring-event:`C_RETURN` and :monitoring-event:`C_RAISE` events
+are controlled by the :monitoring-event:`CALL` event.
+:monitoring-event:`C_RETURN` and :monitoring-event:`C_RAISE` events will only be seen if the
+corresponding :monitoring-event:`CALL` event is being monitored.
+
+Other events
+''''''''''''
+
+Other events are not necessarily tied to a specific location in the
+program and cannot be individually disabled.
+
+The other events that can be monitored are:
+
+* :monitoring-event:`PY_THROW`
+* :monitoring-event:`PY_UNWIND`
+* :monitoring-event:`RAISE`
+* :monitoring-event:`EXCEPTION_HANDLED`
+
+
+The STOP_ITERATION event
+''''''''''''''''''''''''
+
+:pep:`PEP 380 <380#use-of-stopiteration-to-return-values>`
+specifies that a :exc:`StopIteration` exception is raised when returning a value
+from a generator or coroutine. However, this is a very inefficient way to
+return a value, so some Python implementations, notably CPython 3.12+, do not
+raise an exception unless it would be visible to other code.
+
+To allow tools to monitor for real exceptions without slowing down generators
+and coroutines, the :monitoring-event:`STOP_ITERATION` event is provided.
+:monitoring-event:`STOP_ITERATION` can be locally disabled, unlike :monitoring-event:`RAISE`.
+
+
+Turning events on and off
+-------------------------
+
+In order to monitor an event, it must be turned on and a corresponding callback
+must be registered.
+Events can be turned on or off by setting the events either globally or
+for a particular code object.
+
+
+Setting events globally
+'''''''''''''''''''''''
+
+Events can be controlled globally by modifying the set of events being monitored.
+
+.. function:: get_events(tool_id: int, /) -> int
+
+   Returns the ``int`` representing all the active events.
+
+.. function:: set_events(tool_id: int, event_set: int, /) -> None
+
+   Activates all events which are set in *event_set*.
+   Raises a :exc:`ValueError` if *tool_id* is not in use.
+
+No events are active by default.
+
+Per code object events
+''''''''''''''''''''''
+
+Events can also be controlled on a per code object basis.
+
+.. function:: get_local_events(tool_id: int, code: CodeType, /) -> int
+
+   Returns all the local events for *code*
+
+.. function:: set_local_events(tool_id: int, code: CodeType, event_set: int, /) -> None
+
+   Activates all the local events for *code* which are set in *event_set*.
+   Raises a :exc:`ValueError` if *tool_id* is not in use.
+
+Local events add to global events, but do not mask them.
+In other words, all global events will trigger for a code object,
+regardless of the local events.
+
+
+Disabling events
+''''''''''''''''
+
+.. data:: DISABLE
+
+   A special value that can be returned from a callback function to disable
+   events for the current code location.
+
+Local events can be disabled for a specific code location by returning
+:data:`sys.monitoring.DISABLE` from a callback function. This does not change
+which events are set, or any other code locations for the same event.
+
+Disabling events for specific locations is very important for high
+performance monitoring. For example, a program can be run under a
+debugger with no overhead if the debugger disables all monitoring
+except for a few breakpoints.
+
+.. function:: restart_events() -> None
+
+   Enable all the events that were disabled by :data:`sys.monitoring.DISABLE`
+   for all tools.
+
+
+.. _callbacks:
+
+Registering callback functions
+------------------------------
+
+To register a callable for events call
+
+.. function:: register_callback(tool_id: int, event: int, func: Callable | None, /) -> Callable | None
+
+   Registers the callable *func* for the *event* with the given *tool_id*
+
+   If another callback was registered for the given *tool_id* and *event*,
+   it is unregistered and returned.
+   Otherwise :func:`register_callback` returns ``None``.
+
+
+Functions can be unregistered by calling
+``sys.monitoring.register_callback(tool_id, event, None)``.
+
+Callback functions can be registered and unregistered at any time.
+
+Registering or unregistering a callback function will generate a :func:`sys.audit` event.
+
+
+Callback function arguments
+'''''''''''''''''''''''''''
+
+.. data:: MISSING
+
+   A special value that is passed to a callback function to indicate
+   that there are no arguments to the call.
+
+When an active event occurs, the registered callback function is called.
+Different events will provide the callback function with different arguments, as follows:
+
+* :monitoring-event:`PY_START` and :monitoring-event:`PY_RESUME`::
+
+    func(code: CodeType, instruction_offset: int) -> DISABLE | Any
+
+* :monitoring-event:`PY_RETURN` and :monitoring-event:`PY_YIELD`::
+
+    func(code: CodeType, instruction_offset: int, retval: object) -> DISABLE | Any
+
+* :monitoring-event:`CALL`, :monitoring-event:`C_RAISE` and :monitoring-event:`C_RETURN`::
+
+    func(code: CodeType, instruction_offset: int, callable: object, arg0: object | MISSING) -> DISABLE | Any
+
+  If there are no arguments, *arg0* is set to :data:`sys.monitoring.MISSING`.
+
+* :monitoring-event:`RAISE`, :monitoring-event:`RERAISE`, :monitoring-event:`EXCEPTION_HANDLED`,
+  :monitoring-event:`PY_UNWIND`, :monitoring-event:`PY_THROW` and :monitoring-event:`STOP_ITERATION`::
+
+    func(code: CodeType, instruction_offset: int, exception: BaseException) -> DISABLE | Any
+
+* :monitoring-event:`LINE`::
+
+    func(code: CodeType, line_number: int) -> DISABLE | Any
+
+* :monitoring-event:`BRANCH` and :monitoring-event:`JUMP`::
+
+    func(code: CodeType, instruction_offset: int, destination_offset: int) -> DISABLE | Any
+
+  Note that the *destination_offset* is where the code will next execute.
+  For an untaken branch this will be the offset of the instruction following
+  the branch.
+
+* :monitoring-event:`INSTRUCTION`::
+
+    func(code: CodeType, instruction_offset: int) -> DISABLE | Any
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index bacf8ceac5041e..aaf79205d44282 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -22,6 +22,8 @@ always available.
 
    .. versionadded:: 3.2
 
+   .. availability:: Unix.
+
 
 .. function:: addaudithook(hook)
 
@@ -166,14 +168,18 @@ always available.
    Python interpreter.  (This information is not available in any other way ---
    ``modules.keys()`` only lists the imported modules.)
 
-   See also the :attr:`sys.stdlib_module_names` list.
+   See also the :data:`sys.stdlib_module_names` list.
 
 
 .. function:: call_tracing(func, args)
 
    Call ``func(*args)``, while tracing is enabled.  The tracing state is saved,
    and restored afterwards.  This is intended to be called from a debugger from
-   a checkpoint, to recursively debug some other code.
+   a checkpoint, to recursively debug or profile some other code.
+
+   Tracing is suspended while calling a tracing function set by
+   :func:`settrace` or :func:`setprofile` to avoid infinite recursion.
+   :func:`!call_tracing` enables explicit recursion of the tracing function.
 
 
 .. data:: copyright
@@ -333,23 +339,21 @@ always available.
    *wasm32-emscripten* platform. The named tuple is provisional and may change
    in the future.
 
-   .. tabularcolumns:: |l|L|
-
-   +-----------------------------+----------------------------------------------+
-   | Attribute                   | Explanation                                  |
-   +=============================+==============================================+
-   | :const:`emscripten_version` | Emscripten version as tuple of ints          |
-   |                             | (major, minor, micro), e.g. ``(3, 1, 8)``.   |
-   +-----------------------------+----------------------------------------------+
-   | :const:`runtime`            | Runtime string, e.g. browser user agent,     |
-   |                             | ``'Node.js v14.18.2'``, or ``'UNKNOWN'``.    |
-   +-----------------------------+----------------------------------------------+
-   | :const:`pthreads`           | ``True`` if Python is compiled with          |
-   |                             | Emscripten pthreads support.                 |
-   +-----------------------------+----------------------------------------------+
-   | :const:`shared_memory`      | ``True`` if Python is compiled with shared   |
-   |                             | memory support.                              |
-   +-----------------------------+----------------------------------------------+
+   .. attribute:: _emscripten_info.emscripten_version
+
+      Emscripten version as tuple of ints (major, minor, micro), e.g. ``(3, 1, 8)``.
+
+   .. attribute:: _emscripten_info.runtime
+
+      Runtime string, e.g. browser user agent, ``'Node.js v14.18.2'``, or ``'UNKNOWN'``.
+
+   .. attribute:: _emscripten_info.pthreads
+
+      ``True`` if Python is compiled with Emscripten pthreads support.
+
+   .. attribute:: _emscripten_info.shared_memory
+
+      ``True`` if Python is compiled with shared memory support.
 
    .. availability:: Emscripten.
 
@@ -380,7 +384,7 @@ always available.
 
    This function prints out a given traceback and exception to ``sys.stderr``.
 
-   When an exception is raised and uncaught, the interpreter calls
+   When an exception other than :exc:`SystemExit` is raised and uncaught, the interpreter calls
    ``sys.excepthook`` with three arguments, the exception class, exception
    instance, and a traceback object.  In an interactive session this happens just
    before control is returned to the prompt; in a Python program this happens just
@@ -515,27 +519,62 @@ always available.
    The :term:`named tuple` *flags* exposes the status of command line
    flags. The attributes are read only.
 
-   ============================= ==============================================================================================================
-   attribute                     flag
-   ============================= ==============================================================================================================
-   :const:`debug`                :option:`-d`
-   :const:`inspect`              :option:`-i`
-   :const:`interactive`          :option:`-i`
-   :const:`isolated`             :option:`-I`
-   :const:`optimize`             :option:`-O` or :option:`-OO`
-   :const:`dont_write_bytecode`  :option:`-B`
-   :const:`no_user_site`         :option:`-s`
-   :const:`no_site`              :option:`-S`
-   :const:`ignore_environment`   :option:`-E`
-   :const:`verbose`              :option:`-v`
-   :const:`bytes_warning`        :option:`-b`
-   :const:`quiet`                :option:`-q`
-   :const:`hash_randomization`   :option:`-R`
-   :const:`dev_mode`             :option:`-X dev <-X>` (:ref:`Python Development Mode <devmode>`)
-   :const:`utf8_mode`            :option:`-X utf8 <-X>`
-   :const:`safe_path`            :option:`-P`
-   :const:`int_max_str_digits`   :option:`-X int_max_str_digits <-X>` (:ref:`integer string conversion length limitation <int_max_str_digits>`)
-   ============================= ==============================================================================================================
+   .. list-table::
+
+      * - .. attribute:: flags.debug
+        - :option:`-d`
+
+      * - .. attribute:: flags.inspect
+        - :option:`-i`
+
+      * - .. attribute:: flags.interactive
+        - :option:`-i`
+
+      * - .. attribute:: flags.isolated
+        - :option:`-I`
+
+      * - .. attribute:: flags.optimize
+        - :option:`-O` or :option:`-OO`
+
+      * - .. attribute:: flags.dont_write_bytecode
+        - :option:`-B`
+
+      * - .. attribute:: flags.no_user_site
+        - :option:`-s`
+
+      * - .. attribute:: flags.no_site
+        - :option:`-S`
+
+      * - .. attribute:: flags.ignore_environment
+        - :option:`-E`
+
+      * - .. attribute:: flags.verbose
+        - :option:`-v`
+
+      * - .. attribute:: flags.bytes_warning
+        - :option:`-b`
+
+      * - .. attribute:: flags.quiet
+        - :option:`-q`
+
+      * - .. attribute:: flags.hash_randomization
+        - :option:`-R`
+
+      * - .. attribute:: flags.dev_mode
+        - :option:`-X dev <-X>` (:ref:`Python Development Mode <devmode>`)
+
+      * - .. attribute:: flags.utf8_mode
+        - :option:`-X utf8 <-X>`
+
+      * - .. attribute:: flags.safe_path
+        - :option:`-P`
+
+      * - .. attribute:: flags.int_max_str_digits
+        - :option:`-X int_max_str_digits <-X>`
+          (:ref:`integer string conversion length limitation <int_max_str_digits>`)
+
+      * - .. attribute:: flags.warn_default_encoding
+        - :option:`-X warn_default_encoding <-X>`
 
    .. versionchanged:: 3.2
       Added ``quiet`` attribute for the new :option:`-q` flag.
@@ -554,6 +593,9 @@ always available.
       Mode <devmode>` and the ``utf8_mode`` attribute for the new  :option:`-X`
       ``utf8`` flag.
 
+   .. versionchanged:: 3.10
+      Added ``warn_default_encoding`` attribute for :option:`-X` ``warn_default_encoding`` flag.
+
    .. versionchanged:: 3.11
       Added the ``safe_path`` attribute for :option:`-P` option.
 
@@ -570,61 +612,82 @@ always available.
    programming language; see section 5.2.4.2.2 of the 1999 ISO/IEC C standard
    [C99]_, 'Characteristics of floating types', for details.
 
-   .. tabularcolumns:: |l|l|L|
-
-   +---------------------+---------------------+--------------------------------------------------+
-   | attribute           | float.h macro       | explanation                                      |
-   +=====================+=====================+==================================================+
-   | ``epsilon``         | ``DBL_EPSILON``     | difference between 1.0 and the least value       |
-   |                     |                     | greater than 1.0 that is representable as a float|
-   |                     |                     |                                                  |
-   |                     |                     | See also :func:`math.ulp`.                       |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``dig``             | ``DBL_DIG``         | maximum number of decimal digits that can be     |
-   |                     |                     | faithfully represented in a float;  see below    |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``mant_dig``        | ``DBL_MANT_DIG``    | float precision: the number of base-``radix``    |
-   |                     |                     | digits in the significand of a float             |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``max``             | ``DBL_MAX``         | maximum representable positive finite float      |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``max_exp``         | ``DBL_MAX_EXP``     | maximum integer *e* such that ``radix**(e-1)`` is|
-   |                     |                     | a representable finite float                     |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``max_10_exp``      | ``DBL_MAX_10_EXP``  | maximum integer *e* such that ``10**e`` is in the|
-   |                     |                     | range of representable finite floats             |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``min``             | ``DBL_MIN``         | minimum representable positive *normalized* float|
-   |                     |                     |                                                  |
-   |                     |                     | Use :func:`math.ulp(0.0) <math.ulp>` to get the  |
-   |                     |                     | smallest positive *denormalized* representable   |
-   |                     |                     | float.                                           |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``min_exp``         | ``DBL_MIN_EXP``     | minimum integer *e* such that ``radix**(e-1)`` is|
-   |                     |                     | a normalized float                               |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``min_10_exp``      | ``DBL_MIN_10_EXP``  | minimum integer *e* such that ``10**e`` is a     |
-   |                     |                     | normalized float                                 |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``radix``           | ``FLT_RADIX``       | radix of exponent representation                 |
-   +---------------------+---------------------+--------------------------------------------------+
-   | ``rounds``          | ``FLT_ROUNDS``      | integer representing the rounding mode for       |
-   |                     |                     | floating-point arithmetic. This reflects the     |
-   |                     |                     | value of the system ``FLT_ROUNDS`` macro at      |
-   |                     |                     | interpreter startup time:                        |
-   |                     |                     | ``-1`` indeterminable,                           |
-   |                     |                     | ``0`` toward zero,                               |
-   |                     |                     | ``1`` to nearest,                                |
-   |                     |                     | ``2`` toward positive infinity,                  |
-   |                     |                     | ``3`` toward negative infinity                   |
-   |                     |                     |                                                  |
-   |                     |                     | All other values for ``FLT_ROUNDS`` characterize |
-   |                     |                     | implementation-defined rounding behavior.        |
-   +---------------------+---------------------+--------------------------------------------------+
+   .. list-table:: Attributes of the :data:`!float_info` :term:`named tuple`
+      :header-rows: 1
+
+      * - attribute
+        - float.h macro
+        - explanation
+
+      * - .. attribute:: float_info.epsilon
+        - :c:macro:`!DBL_EPSILON`
+        - difference between 1.0 and the least value greater than 1.0 that is
+          representable as a float.
+
+          See also :func:`math.ulp`.
+
+      * - .. attribute:: float_info.dig
+        - :c:macro:`!DBL_DIG`
+        - The maximum number of decimal digits that can be faithfully
+          represented in a float; see below.
+
+      * - .. attribute:: float_info.mant_dig
+        - :c:macro:`!DBL_MANT_DIG`
+        - Float precision: the number of base-``radix`` digits in the
+          significand of a float.
+
+      * - .. attribute:: float_info.max
+        - :c:macro:`!DBL_MAX`
+        - The maximum representable positive finite float.
+
+      * - .. attribute:: float_info.max_exp
+        - :c:macro:`!DBL_MAX_EXP`
+        - The maximum integer *e* such that ``radix**(e-1)`` is a representable
+          finite float.
+
+      * - .. attribute:: float_info.max_10_exp
+        - :c:macro:`!DBL_MAX_10_EXP`
+        - The maximum integer *e* such that ``10**e`` is in the range of
+          representable finite floats.
+
+      * - .. attribute:: float_info.min
+        - :c:macro:`!DBL_MIN`
+        - The minimum representable positive *normalized* float.
+
+          Use :func:`math.ulp(0.0) <math.ulp>` to get the smallest positive
+          *denormalized* representable float.
+
+      * - .. attribute:: float_info.min_exp
+        - :c:macro:`!DBL_MIN_EXP`
+        - The minimum integer *e* such that ``radix**(e-1)`` is a normalized
+          float.
+
+      * - .. attribute:: float_info.min_10_exp
+        - :c:macro:`!DBL_MIN_10_EXP`
+        - The minimum integer *e* such that ``10**e`` is a normalized float.
+
+      * - .. attribute:: float_info.radix
+        - :c:macro:`!FLT_RADIX`
+        - The radix of exponent representation.
+
+      * - .. attribute:: float_info.rounds
+        - :c:macro:`!FLT_ROUNDS`
+        - An integer representing the rounding mode for floating-point arithmetic.
+          This reflects the value of the system :c:macro:`!FLT_ROUNDS` macro
+          at interpreter startup time:
+
+          * ``-1``: indeterminable
+          * ``0``: toward zero
+          * ``1``: to nearest
+          * ``2``: toward positive infinity
+          * ``3``: toward negative infinity
+
+          All other values for :c:macro:`!FLT_ROUNDS` characterize
+          implementation-defined rounding behavior.
 
    The attribute :attr:`sys.float_info.dig` needs further explanation.  If
    ``s`` is any string representing a decimal number with at most
-   :attr:`sys.float_info.dig` significant digits, then converting ``s`` to a
+   :attr:`!sys.float_info.dig` significant digits, then converting ``s`` to a
    float and back again will recover a string representing the same decimal
    value::
 
@@ -696,8 +759,8 @@ always available.
 
    Return the current value of the flags that are used for
    :c:func:`dlopen` calls.  Symbolic names for the flag values can be
-   found in the :mod:`os` module (``RTLD_xxx`` constants, e.g.
-   :data:`os.RTLD_LAZY`).
+   found in the :mod:`os` module (:samp:`RTLD_{xxx}` constants, e.g.
+   :const:`os.RTLD_LAZY`).
 
    .. availability:: Unix.
 
@@ -766,6 +829,15 @@ always available.
    higher than you might expect, because it includes the (temporary) reference as
    an argument to :func:`getrefcount`.
 
+   Note that the returned value may not actually reflect how many
+   references to the object are actually held.  For example, some
+   objects are :term:`immortal` and have a very high refcount that does not
+   reflect the actual number of references.  Consequently, do not rely
+   on the returned value to be accurate, other than a value of 0 or 1.
+
+   .. versionchanged:: 3.12
+      Immortal objects have very large refcounts that do not match
+      the actual number of references to the object.
 
 .. function:: getrecursionlimit()
 
@@ -873,24 +945,24 @@ always available.
    ``sys.getwindowsversion().major``. For compatibility with prior
    versions, only the first 5 elements are retrievable by indexing.
 
-   *platform* will be :const:`2 (VER_PLATFORM_WIN32_NT)`.
+   *platform* will be ``2`` (VER_PLATFORM_WIN32_NT).
 
    *product_type* may be one of the following values:
 
    +---------------------------------------+---------------------------------+
    | Constant                              | Meaning                         |
    +=======================================+=================================+
-   | :const:`1 (VER_NT_WORKSTATION)`       | The system is a workstation.    |
+   | ``1`` (VER_NT_WORKSTATION)            | The system is a workstation.    |
    +---------------------------------------+---------------------------------+
-   | :const:`2 (VER_NT_DOMAIN_CONTROLLER)` | The system is a domain          |
+   | ``2`` (VER_NT_DOMAIN_CONTROLLER)      | The system is a domain          |
    |                                       | controller.                     |
    +---------------------------------------+---------------------------------+
-   | :const:`3 (VER_NT_SERVER)`            | The system is a server, but not |
+   | ``3`` (VER_NT_SERVER)                 | The system is a server, but not |
    |                                       | a domain controller.            |
    +---------------------------------------+---------------------------------+
 
-   This function wraps the Win32 :c:func:`GetVersionEx` function; see the
-   Microsoft documentation on :c:func:`OSVERSIONINFOEX` for more information
+   This function wraps the Win32 :c:func:`!GetVersionEx` function; see the
+   Microsoft documentation on :c:func:`!OSVERSIONINFOEX` for more information
    about these fields.
 
    *platform_version* returns the major version, minor version and
@@ -948,28 +1020,37 @@ always available.
    implementation.  For more details about hashing of numeric types, see
    :ref:`numeric-hash`.
 
-   +---------------------+--------------------------------------------------+
-   | attribute           | explanation                                      |
-   +=====================+==================================================+
-   | :const:`width`      | width in bits used for hash values               |
-   +---------------------+--------------------------------------------------+
-   | :const:`modulus`    | prime modulus P used for numeric hash scheme     |
-   +---------------------+--------------------------------------------------+
-   | :const:`inf`        | hash value returned for a positive infinity      |
-   +---------------------+--------------------------------------------------+
-   | :const:`nan`        | (this attribute is no longer used)               |
-   +---------------------+--------------------------------------------------+
-   | :const:`imag`       | multiplier used for the imaginary part of a      |
-   |                     | complex number                                   |
-   +---------------------+--------------------------------------------------+
-   | :const:`algorithm`  | name of the algorithm for hashing of str, bytes, |
-   |                     | and memoryview                                   |
-   +---------------------+--------------------------------------------------+
-   | :const:`hash_bits`  | internal output size of the hash algorithm       |
-   +---------------------+--------------------------------------------------+
-   | :const:`seed_bits`  | size of the seed key of the hash algorithm       |
-   +---------------------+--------------------------------------------------+
+   .. attribute:: hash_info.width
+
+      The width in bits used for hash values
+
+   .. attribute:: hash_info.modulus
 
+      The prime modulus P used for numeric hash scheme
+
+   .. attribute:: hash_info.inf
+
+      The hash value returned for a positive infinity
+
+   .. attribute:: hash_info.nan
+
+      (This attribute is no longer used)
+
+   .. attribute:: hash_info.imag
+
+      The multiplier used for the imaginary part of a complex number
+
+   .. attribute:: hash_info.algorithm
+
+      The name of the algorithm for hashing of str, bytes, and memoryview
+
+   .. attribute:: hash_info.hash_bits
+
+      The internal output size of the hash algorithm
+
+   .. attribute:: hash_info.seed_bits
+
+      The size of the seed key of the hash algorithm
 
    .. versionadded:: 3.2
 
@@ -1047,32 +1128,31 @@ always available.
    A :term:`named tuple` that holds information about Python's internal
    representation of integers.  The attributes are read only.
 
-   .. tabularcolumns:: |l|L|
-
-   +----------------------------------------+-----------------------------------------------+
-   | Attribute                              | Explanation                                   |
-   +========================================+===============================================+
-   | :const:`bits_per_digit`                | number of bits held in each digit.  Python    |
-   |                                        | integers are stored internally in base        |
-   |                                        | ``2**int_info.bits_per_digit``                |
-   +----------------------------------------+-----------------------------------------------+
-   | :const:`sizeof_digit`                  | size in bytes of the C type used to           |
-   |                                        | represent a digit                             |
-   +----------------------------------------+-----------------------------------------------+
-   | :const:`default_max_str_digits`        | default value for                             |
-   |                                        | :func:`sys.get_int_max_str_digits` when it    |
-   |                                        | is not otherwise explicitly configured.       |
-   +----------------------------------------+-----------------------------------------------+
-   | :const:`str_digits_check_threshold`    | minimum non-zero value for                    |
-   |                                        | :func:`sys.set_int_max_str_digits`,           |
-   |                                        | :envvar:`PYTHONINTMAXSTRDIGITS`, or           |
-   |                                        | :option:`-X int_max_str_digits <-X>`.         |
-   +----------------------------------------+-----------------------------------------------+
+   .. attribute:: int_info.bits_per_digit
+
+      The number of bits held in each digit.
+      Python integers are stored internally in base ``2**int_info.bits_per_digit``.
+
+   .. attribute:: int_info.sizeof_digit
+
+      The size in bytes of the C type used to represent a digit.
+
+   .. attribute:: int_info.default_max_str_digits
+
+      The default value for :func:`sys.get_int_max_str_digits`
+      when it is not otherwise explicitly configured.
+
+   .. attribute:: int_info.str_digits_check_threshold
+
+      The minimum non-zero value for :func:`sys.set_int_max_str_digits`,
+      :envvar:`PYTHONINTMAXSTRDIGITS`, or :option:`-X int_max_str_digits <-X>`.
 
    .. versionadded:: 3.1
 
    .. versionchanged:: 3.11
-      Added ``default_max_str_digits`` and ``str_digits_check_threshold``.
+
+      Added :attr:`~int_info.default_max_str_digits` and
+      :attr:`~int_info.str_digits_check_threshold`.
 
 
 .. data:: __interactivehook__
@@ -1102,14 +1182,14 @@ always available.
    names used in Python programs are automatically interned, and the dictionaries
    used to hold module, class or instance attributes have interned keys.
 
-   Interned strings are not immortal; you must keep a reference to the return
-   value of :func:`intern` around to benefit from it.
+   Interned strings are not :term:`immortal`; you must keep a reference to the
+   return value of :func:`intern` around to benefit from it.
 
 
 .. function:: is_finalizing()
 
-   Return :const:`True` if the Python interpreter is
-   :term:`shutting down <interpreter shutdown>`, :const:`False` otherwise.
+   Return :const:`True` if the main Python interpreter is
+   :term:`shutting down <interpreter shutdown>`. Return :const:`False` otherwise.
 
    .. versionadded:: 3.5
 
@@ -1125,6 +1205,18 @@ always available.
 
    .. versionadded:: 3.12
 
+.. function:: _is_interned(string)
+
+   Return :const:`True` if the given string is "interned", :const:`False`
+   otherwise.
+
+   .. versionadded:: 3.13
+
+   .. impl-detail::
+
+      It is not guaranteed to exist in all implementations of Python.
+
+
 .. data:: last_type
           last_value
           last_traceback
@@ -1287,20 +1379,20 @@ always available.
    ================ ===========================
 
    .. versionchanged:: 3.3
-      On Linux, :attr:`sys.platform` doesn't contain the major version anymore.
+      On Linux, :data:`sys.platform` doesn't contain the major version anymore.
       It is always ``'linux'``, instead of ``'linux2'`` or ``'linux3'``.  Since
       older Python versions include the version number, it is recommended to
       always use the ``startswith`` idiom presented above.
 
    .. versionchanged:: 3.8
-      On AIX, :attr:`sys.platform` doesn't contain the major version anymore.
+      On AIX, :data:`sys.platform` doesn't contain the major version anymore.
       It is always ``'aix'``, instead of ``'aix5'`` or ``'aix7'``.  Since
       older Python versions include the version number, it is recommended to
       always use the ``startswith`` idiom presented above.
 
    .. seealso::
 
-      :attr:`os.name` has a coarser granularity.  :func:`os.uname` gives
+      :data:`os.name` has a coarser granularity.  :func:`os.uname` gives
       system-dependent version information.
 
       The :mod:`platform` module provides detailed checks for the
@@ -1367,8 +1459,8 @@ always available.
    lazy resolving of symbols when importing a module, if called as
    ``sys.setdlopenflags(0)``.  To share symbols across extension modules, call as
    ``sys.setdlopenflags(os.RTLD_GLOBAL)``.  Symbolic names for the flag values
-   can be found in the :mod:`os` module (``RTLD_xxx`` constants, e.g.
-   :data:`os.RTLD_LAZY`).
+   can be found in the :mod:`os` module (:samp:`RTLD_{xxx}` constants, e.g.
+   :const:`os.RTLD_LAZY`).
 
    .. availability:: Unix.
 
@@ -1397,13 +1489,16 @@ always available.
    its return value is not used, so it can simply return ``None``.  Error in the profile
    function will cause itself unset.
 
+   .. note::
+      The same tracing mechanism is used for :func:`!setprofile` as :func:`settrace`.
+      To trace calls with :func:`!setprofile` inside a tracing function
+      (e.g. in a debugger breakpoint), see :func:`call_tracing`.
+
    Profile functions should have three arguments: *frame*, *event*, and
    *arg*. *frame* is the current stack frame.  *event* is a string: ``'call'``,
    ``'return'``, ``'c_call'``, ``'c_return'``, or ``'c_exception'``. *arg* depends
    on the event type.
 
-   .. audit-event:: sys.setprofile "" sys.setprofile
-
    The events have the following meaning:
 
    ``'call'``
@@ -1425,6 +1520,9 @@ always available.
    ``'c_exception'``
       A C function has raised an exception.  *arg* is the C function object.
 
+   .. audit-event:: sys.setprofile "" sys.setprofile
+
+
 .. function:: setrecursionlimit(limit)
 
    Set the maximum depth of the Python interpreter stack to *limit*.  This limit
@@ -1478,13 +1576,16 @@ always available.
    function to be used for the new scope, or ``None`` if the scope shouldn't be
    traced.
 
-   The local trace function should return a reference to itself (or to another
-   function for further tracing in that scope), or ``None`` to turn off tracing
-   in that scope.
+   The local trace function should return a reference to itself, or to another
+   function which would then be used as the local trace function for the scope.
 
    If there is any error occurred in the trace function, it will be unset, just
    like ``settrace(None)`` is called.
 
+   .. note::
+      Tracing is disabled while calling the trace function (e.g. a function set by
+      :func:`!settrace`). For recursive tracing see :func:`call_tracing`.
+
    The events have the following meaning:
 
    ``'call'``
@@ -1499,7 +1600,8 @@ always available.
       :file:`Objects/lnotab_notes.txt` for a detailed explanation of how this
       works.
       Per-line events may be disabled for a frame by setting
-      :attr:`f_trace_lines` to :const:`False` on that frame.
+      :attr:`~frame.f_trace_lines` to :const:`False` on that
+      :ref:`frame <frame-objects>`.
 
    ``'return'``
       A function (or other code block) is about to return.  The local trace
@@ -1517,8 +1619,8 @@ always available.
       opcode details).  The local trace function is called; *arg* is
       ``None``; the return value specifies the new local trace function.
       Per-opcode events are not emitted by default: they must be explicitly
-      requested by setting :attr:`f_trace_opcodes` to :const:`True` on the
-      frame.
+      requested by setting :attr:`~frame.f_trace_opcodes` to :const:`True` on the
+      :ref:`frame <frame-objects>`.
 
    Note that as an exception is propagated down the chain of callers, an
    ``'exception'`` event is generated at each level.
@@ -1547,8 +1649,8 @@ always available.
 
    .. versionchanged:: 3.7
 
-      ``'opcode'`` event type added; :attr:`f_trace_lines` and
-      :attr:`f_trace_opcodes` attributes added to frames
+      ``'opcode'`` event type added; :attr:`~frame.f_trace_lines` and
+      :attr:`~frame.f_trace_opcodes` attributes added to frames
 
 .. function:: set_asyncgen_hooks(firstiter, finalizer)
 
@@ -1705,7 +1807,7 @@ always available.
       However, if you are writing a library (and do not control in which
       context its code will be executed), be aware that the standard streams
       may be replaced with file-like objects like :class:`io.StringIO` which
-      do not support the :attr:`~io.BufferedIOBase.buffer` attribute.
+      do not support the :attr:`!buffer` attribute.
 
 
 .. data:: __stdin__
@@ -1743,7 +1845,7 @@ always available.
    ``email.mime`` sub-package and the ``email.message`` sub-module are not
    listed.
 
-   See also the :attr:`sys.builtin_module_names` list.
+   See also the :data:`sys.builtin_module_names` list.
 
    .. versionadded:: 3.10
 
@@ -1753,29 +1855,28 @@ always available.
    A :term:`named tuple` holding information about the thread
    implementation.
 
-   .. tabularcolumns:: |l|p{0.7\linewidth}|
-
-   +------------------+---------------------------------------------------------+
-   | Attribute        | Explanation                                             |
-   +==================+=========================================================+
-   | :const:`name`    | Name of the thread implementation:                      |
-   |                  |                                                         |
-   |                  |  * ``'nt'``: Windows threads                            |
-   |                  |  * ``'pthread'``: POSIX threads                         |
-   |                  |  * ``'pthread-stubs'``: stub POSIX threads              |
-   |                  |    (on WebAssembly platforms without threading support) |
-   |                  |  * ``'solaris'``: Solaris threads                       |
-   +------------------+---------------------------------------------------------+
-   | :const:`lock`    | Name of the lock implementation:                        |
-   |                  |                                                         |
-   |                  |  * ``'semaphore'``: a lock uses a semaphore             |
-   |                  |  * ``'mutex+cond'``: a lock uses a mutex                |
-   |                  |    and a condition variable                             |
-   |                  |  * ``None`` if this information is unknown              |
-   +------------------+---------------------------------------------------------+
-   | :const:`version` | Name and version of the thread library. It is a string, |
-   |                  | or ``None`` if this information is unknown.             |
-   +------------------+---------------------------------------------------------+
+   .. attribute:: thread_info.name
+
+      The name of the thread implementation:
+
+      * ``"nt"``: Windows threads
+      * ``"pthread"``: POSIX threads
+      * ``"pthread-stubs"``: stub POSIX threads
+        (on WebAssembly platforms without threading support)
+      * ``"solaris"``: Solaris threads
+
+   .. attribute:: thread_info.lock
+
+      The name of the lock implementation:
+
+      * ``"semaphore"``: a lock uses a semaphore
+      * ``"mutex+cond"``: a lock uses a mutex and a condition variable
+      * ``None`` if this information is unknown
+
+   .. attribute:: thread_info.version
+
+      The name and version of the thread library.
+      It is a string, or ``None`` if this information is unknown.
 
    .. versionadded:: 3.3
 
@@ -1798,35 +1899,39 @@ always available.
 
    The *unraisable* argument has the following attributes:
 
-   * *exc_type*: Exception type.
-   * *exc_value*: Exception value, can be ``None``.
-   * *exc_traceback*: Exception traceback, can be ``None``.
-   * *err_msg*: Error message, can be ``None``.
-   * *object*: Object causing the exception, can be ``None``.
+   * :attr:`!exc_type`: Exception type.
+   * :attr:`!exc_value`: Exception value, can be ``None``.
+   * :attr:`!exc_traceback`: Exception traceback, can be ``None``.
+   * :attr:`!err_msg`: Error message, can be ``None``.
+   * :attr:`!object`: Object causing the exception, can be ``None``.
 
-   The default hook formats *err_msg* and *object* as:
+   The default hook formats :attr:`!err_msg` and :attr:`!object` as:
    ``f'{err_msg}: {object!r}'``; use "Exception ignored in" error message
-   if *err_msg* is ``None``.
+   if :attr:`!err_msg` is ``None``.
 
    :func:`sys.unraisablehook` can be overridden to control how unraisable
    exceptions are handled.
 
-   Storing *exc_value* using a custom hook can create a reference cycle. It
-   should be cleared explicitly to break the reference cycle when the
-   exception is no longer needed.
+   .. seealso::
+
+      :func:`excepthook` which handles uncaught exceptions.
 
-   Storing *object* using a custom hook can resurrect it if it is set to an
-   object which is being finalized. Avoid storing *object* after the custom
-   hook completes to avoid resurrecting objects.
+   .. warning::
 
-   See also :func:`excepthook` which handles uncaught exceptions.
+      Storing :attr:`!exc_value` using a custom hook can create a reference cycle.
+      It should be cleared explicitly to break the reference cycle when the
+      exception is no longer needed.
+
+      Storing :attr:`!object` using a custom hook can resurrect it if it is set to an
+      object which is being finalized. Avoid storing :attr:`!object` after the custom
+      hook completes to avoid resurrecting objects.
 
    .. audit-event:: sys.unraisablehook hook,unraisable sys.unraisablehook
 
       Raise an auditing event ``sys.unraisablehook`` with arguments
-      ``hook``, ``unraisable`` when an exception that cannot be handled occurs.
-      The ``unraisable`` object is the same as what will be passed to the hook.
-      If no hook has been set, ``hook`` may be ``None``.
+      *hook*, *unraisable* when an exception that cannot be handled occurs.
+      The *unraisable* object is the same as what will be passed to the hook.
+      If no hook has been set, *hook* may be ``None``.
 
    .. versionadded:: 3.8
 
@@ -1876,6 +1981,13 @@ always available.
    .. availability:: Windows.
 
 
+.. data:: monitoring
+   :noindex:
+
+   Namespace containing functions and constants for register callbacks
+   and controlling monitoring events.
+   See  :mod:`sys.monitoring` for details.
+
 .. data:: _xoptions
 
    A dictionary of the various implementation-specific flags passed through
diff --git a/Doc/library/sys_path_init.rst b/Doc/library/sys_path_init.rst
index 72c1387344c2ad..a87a41cf829fa8 100644
--- a/Doc/library/sys_path_init.rst
+++ b/Doc/library/sys_path_init.rst
@@ -99,8 +99,7 @@ Embedded Python
 
 If Python is embedded within another application :c:func:`Py_InitializeFromConfig` and
 the :c:type:`PyConfig` structure can be used to initialize Python. The path specific
-details are described at :ref:`init-path-config`. Alternatively the older :c:func:`Py_SetPath`
-can be used to bypass the initialization of the module search path.
+details are described at :ref:`init-path-config`.
 
 .. seealso::
 
diff --git a/Doc/library/sysconfig.rst b/Doc/library/sysconfig.rst
index 839c2c015b49ae..2faab212e46eff 100644
--- a/Doc/library/sysconfig.rst
+++ b/Doc/library/sysconfig.rst
@@ -9,7 +9,7 @@
 
 .. versionadded:: 3.2
 
-**Source code:** :source:`Lib/sysconfig.py`
+**Source code:** :source:`Lib/sysconfig`
 
 .. index::
    single: configuration information
@@ -20,6 +20,7 @@ The :mod:`sysconfig` module provides access to Python's configuration
 information like the list of installation paths and the configuration variables
 relevant for the current platform.
 
+
 Configuration variables
 -----------------------
 
@@ -60,6 +61,7 @@ Example of usage::
    >>> sysconfig.get_config_vars('AR', 'CXX')
    ['ar', 'g++']
 
+
 .. _installation_paths:
 
 Installation paths
@@ -68,29 +70,26 @@ Installation paths
 Python uses an installation scheme that differs depending on the platform and on
 the installation options.  These schemes are stored in :mod:`sysconfig` under
 unique identifiers based on the value returned by :const:`os.name`.
-
-Every new component that is installed using :mod:`distutils` or a
-Distutils-based system will follow the same scheme to copy its file in the right
-places.
+The schemes are used by package installers to determine where to copy files to.
 
 Python currently supports nine schemes:
 
 - *posix_prefix*: scheme for POSIX platforms like Linux or macOS.  This is
   the default scheme used when Python or a component is installed.
-- *posix_home*: scheme for POSIX platforms used when a *home* option is used
-  upon installation.  This scheme is used when a component is installed through
-  Distutils with a specific home prefix.
-- *posix_user*: scheme for POSIX platforms used when a component is installed
-  through Distutils and the *user* option is used.  This scheme defines paths
-  located under the user home directory.
+- *posix_home*: scheme for POSIX platforms, when the *home* option is used.
+  This scheme defines paths located under a specific home prefix.
+- *posix_user*: scheme for POSIX platforms, when the *user* option is used.
+  This scheme defines paths located under the user's home directory
+  (:const:`site.USER_BASE`).
 - *posix_venv*: scheme for :mod:`Python virtual environments <venv>` on POSIX
-  platforms; by default it is the same as *posix_prefix* .
-- *nt*: scheme for NT platforms like Windows.
-- *nt_user*: scheme for NT platforms, when the *user* option is used.
-- *nt_venv*: scheme for :mod:`Python virtual environments <venv>` on NT
-  platforms; by default it is the same as *nt* .
-- *venv*: a scheme with values from ether *posix_venv* or *nt_venv* depending
-  on the platform Python runs on
+  platforms; by default it is the same as *posix_prefix*.
+- *nt*: scheme for Windows.
+  This is the default scheme used when Python or a component is installed.
+- *nt_user*: scheme for Windows, when the *user* option is used.
+- *nt_venv*: scheme for :mod:`Python virtual environments <venv>` on Windows;
+  by default it is the same as *nt*.
+- *venv*: a scheme with values from either *posix_venv* or *nt_venv* depending
+  on the platform Python runs on.
 - *osx_framework_user*: scheme for macOS, when the *user* option is used.
 
 Each scheme is itself composed of a series of paths and each path has a unique
@@ -101,7 +100,7 @@ identifier.  Python currently uses eight paths:
 - *platstdlib*: directory containing the standard Python library files that are
   platform-specific.
 - *platlib*: directory for site-specific, platform-specific files.
-- *purelib*: directory for site-specific, non-platform-specific files.
+- *purelib*: directory for site-specific, non-platform-specific files ('pure' Python).
 - *include*: directory for non-platform-specific header files for
   the Python C-API.
 - *platinclude*: directory for platform-specific header files for
@@ -109,7 +108,157 @@ identifier.  Python currently uses eight paths:
 - *scripts*: directory for script files.
 - *data*: directory for data files.
 
-:mod:`sysconfig` provides some functions to determine these paths.
+
+.. _sysconfig-user-scheme:
+
+User scheme
+---------------
+
+This scheme is designed to be the most convenient solution for users that don't
+have write permission to the global site-packages directory or don't want to
+install into it.
+
+Files will be installed into subdirectories of :const:`site.USER_BASE` (written
+as :file:`{userbase}` hereafter).  This scheme installs pure Python modules and
+extension modules in the same location (also known as :const:`site.USER_SITE`).
+
+``posix_user``
+^^^^^^^^^^^^^^
+
+============== ===========================================================
+Path           Installation directory
+============== ===========================================================
+*stdlib*       :file:`{userbase}/lib/python{X.Y}`
+*platstdlib*   :file:`{userbase}/lib/python{X.Y}`
+*platlib*      :file:`{userbase}/lib/python{X.Y}/site-packages`
+*purelib*      :file:`{userbase}/lib/python{X.Y}/site-packages`
+*include*      :file:`{userbase}/include/python{X.Y}`
+*scripts*      :file:`{userbase}/bin`
+*data*         :file:`{userbase}`
+============== ===========================================================
+
+``nt_user``
+^^^^^^^^^^^
+
+============== ===========================================================
+Path           Installation directory
+============== ===========================================================
+*stdlib*       :file:`{userbase}\\Python{XY}`
+*platstdlib*   :file:`{userbase}\\Python{XY}`
+*platlib*      :file:`{userbase}\\Python{XY}\\site-packages`
+*purelib*      :file:`{userbase}\\Python{XY}\\site-packages`
+*include*      :file:`{userbase}\\Python{XY}\\Include`
+*scripts*      :file:`{userbase}\\Python{XY}\\Scripts`
+*data*         :file:`{userbase}`
+============== ===========================================================
+
+``osx_framework_user``
+^^^^^^^^^^^^^^^^^^^^^^
+
+============== ===========================================================
+Path           Installation directory
+============== ===========================================================
+*stdlib*       :file:`{userbase}/lib/python`
+*platstdlib*   :file:`{userbase}/lib/python`
+*platlib*      :file:`{userbase}/lib/python/site-packages`
+*purelib*      :file:`{userbase}/lib/python/site-packages`
+*include*      :file:`{userbase}/include/python{X.Y}`
+*scripts*      :file:`{userbase}/bin`
+*data*         :file:`{userbase}`
+============== ===========================================================
+
+
+.. _sysconfig-home-scheme:
+
+Home scheme
+-----------
+
+The idea behind the "home scheme" is that you build and maintain a personal
+stash of Python modules.  This scheme's name is derived from the idea of a
+"home" directory on Unix, since it's not unusual for a Unix user to make their
+home directory have a layout similar to :file:`/usr/` or :file:`/usr/local/`.
+This scheme can be used by anyone, regardless of the operating system they
+are installing for.
+
+``posix_home``
+^^^^^^^^^^^^^^
+
+============== ===========================================================
+Path           Installation directory
+============== ===========================================================
+*stdlib*       :file:`{home}/lib/python`
+*platstdlib*   :file:`{home}/lib/python`
+*platlib*      :file:`{home}/lib/python`
+*purelib*      :file:`{home}/lib/python`
+*include*      :file:`{home}/include/python`
+*platinclude*  :file:`{home}/include/python`
+*scripts*      :file:`{home}/bin`
+*data*         :file:`{home}`
+============== ===========================================================
+
+
+.. _sysconfig-prefix-scheme:
+
+Prefix scheme
+-------------
+
+The "prefix scheme" is useful when you wish to use one Python installation to
+perform the build/install (i.e., to run the setup script), but install modules
+into the third-party module directory of a different Python installation (or
+something that looks like a different Python installation).  If this sounds a
+trifle unusual, it is---that's why the user and home schemes come before.  However,
+there are at least two known cases where the prefix scheme will be useful.
+
+First, consider that many Linux distributions put Python in :file:`/usr`, rather
+than the more traditional :file:`/usr/local`.  This is entirely appropriate,
+since in those cases Python is part of "the system" rather than a local add-on.
+However, if you are installing Python modules from source, you probably want
+them to go in :file:`/usr/local/lib/python2.{X}` rather than
+:file:`/usr/lib/python2.{X}`.
+
+Another possibility is a network filesystem where the name used to write to a
+remote directory is different from the name used to read it: for example, the
+Python interpreter accessed as :file:`/usr/local/bin/python` might search for
+modules in :file:`/usr/local/lib/python2.{X}`, but those modules would have to
+be installed to, say, :file:`/mnt/{@server}/export/lib/python2.{X}`.
+
+``posix_prefix``
+^^^^^^^^^^^^^^^^
+
+============== ==========================================================
+Path           Installation directory
+============== ==========================================================
+*stdlib*       :file:`{prefix}/lib/python{X.Y}`
+*platstdlib*   :file:`{prefix}/lib/python{X.Y}`
+*platlib*      :file:`{prefix}/lib/python{X.Y}/site-packages`
+*purelib*      :file:`{prefix}/lib/python{X.Y}/site-packages`
+*include*      :file:`{prefix}/include/python{X.Y}`
+*platinclude*  :file:`{prefix}/include/python{X.Y}`
+*scripts*      :file:`{prefix}/bin`
+*data*         :file:`{prefix}`
+============== ==========================================================
+
+``nt``
+^^^^^^
+
+============== ==========================================================
+Path           Installation directory
+============== ==========================================================
+*stdlib*       :file:`{prefix}\\Lib`
+*platstdlib*   :file:`{prefix}\\Lib`
+*platlib*      :file:`{prefix}\\Lib\\site-packages`
+*purelib*      :file:`{prefix}\\Lib\\site-packages`
+*include*      :file:`{prefix}\\Include`
+*platinclude*  :file:`{prefix}\\Include`
+*scripts*      :file:`{prefix}\\Scripts`
+*data*         :file:`{prefix}`
+============== ==========================================================
+
+
+Installation path functions
+---------------------------
+
+:mod:`sysconfig` provides some functions to determine these installation paths.
 
 .. function:: get_scheme_names()
 
@@ -187,7 +336,7 @@ identifier.  Python currently uses eight paths:
    platform is used.
 
    If *vars* is provided, it must be a dictionary of variables that will update
-   the dictionary return by :func:`get_config_vars`.
+   the dictionary returned by :func:`get_config_vars`.
 
    If *expand* is set to ``False``, the path will not be expanded using the
    variables.
@@ -278,6 +427,7 @@ Other functions
 
    Return the path of :file:`Makefile`.
 
+.. _sysconfig-cli:
 
 Using :mod:`sysconfig` as a script
 ----------------------------------
diff --git a/Doc/library/syslog.rst b/Doc/library/syslog.rst
index f29ef03267b1ba..b5ab446e0096ed 100644
--- a/Doc/library/syslog.rst
+++ b/Doc/library/syslog.rst
@@ -11,12 +11,12 @@ This module provides an interface to the Unix ``syslog`` library routines.
 Refer to the Unix manual pages for a detailed description of the ``syslog``
 facility.
 
+.. availability:: Unix, not Emscripten, not WASI.
+
 This module wraps the system ``syslog`` family of routines.  A pure Python
 library that can speak to a syslog server is available in the
 :mod:`logging.handlers` module as :class:`SysLogHandler`.
 
-.. include:: ../includes/wasm-notavail.rst
-
 The module defines the following functions:
 
 
diff --git a/Doc/library/tarfile.rst b/Doc/library/tarfile.rst
index 891af1bcf7edff..3e5723a66780ca 100644
--- a/Doc/library/tarfile.rst
+++ b/Doc/library/tarfile.rst
@@ -318,7 +318,7 @@ be finalized; only the internally used file object will be closed. See the
 .. versionadded:: 3.2
    Added support for the context management protocol.
 
-.. class:: TarFile(name=None, mode='r', fileobj=None, format=DEFAULT_FORMAT, tarinfo=TarInfo, dereference=False, ignore_zeros=False, encoding=ENCODING, errors='surrogateescape', pax_headers=None, debug=0, errorlevel=1)
+.. class:: TarFile(name=None, mode='r', fileobj=None, format=DEFAULT_FORMAT, tarinfo=TarInfo, dereference=False, ignore_zeros=False, encoding=ENCODING, errors='surrogateescape', pax_headers=None, debug=0, errorlevel=1, stream=False)
 
    All following arguments are optional and can be accessed as instance attributes
    as well.
@@ -369,6 +369,9 @@ be finalized; only the internally used file object will be closed. See the
    The *pax_headers* argument is an optional dictionary of strings which
    will be added as a pax global header if *format* is :const:`PAX_FORMAT`.
 
+   If *stream* is set to :const:`True` then while reading the archive info about files
+   in the archive are not cached, saving memory.
+
    .. versionchanged:: 3.2
       Use ``'surrogateescape'`` as the default for the *errors* argument.
 
@@ -378,6 +381,8 @@ be finalized; only the internally used file object will be closed. See the
    .. versionchanged:: 3.6
       The *name* parameter accepts a :term:`path-like object`.
 
+   .. versionchanged:: 3.13
+      Add the *stream* parameter.
 
 .. classmethod:: TarFile.open(...)
 
@@ -735,6 +740,11 @@ A ``TarInfo`` object has the following public data attributes:
    Name of the target file name, which is only present in :class:`TarInfo` objects
    of type :const:`LNKTYPE` and :const:`SYMTYPE`.
 
+   For symbolic links (``SYMTYPE``), the *linkname* is relative to the directory
+   that contains the link.
+   For hard links (``LNKTYPE``), the *linkname* is relative to the root of
+   the archive.
+
 
 .. attribute:: TarInfo.uid
    :type: int
@@ -903,7 +913,7 @@ can be:
   path to where the archive is extracted (i.e. the same path is used for all
   members)::
 
-      filter(/, member: TarInfo, path: str) -> TarInfo | None
+      filter(member: TarInfo, path: str, /) -> TarInfo | None
 
   The callable is called just before each member is extracted, so it can
   take the current state of the disk into account.
@@ -923,17 +933,17 @@ Default named filters
 The pre-defined, named filters are available as functions, so they can be
 reused in custom filters:
 
-.. function:: fully_trusted_filter(/, member, path)
+.. function:: fully_trusted_filter(member, path)
 
    Return *member* unchanged.
 
    This implements the ``'fully_trusted'`` filter.
 
-.. function:: tar_filter(/, member, path)
+.. function:: tar_filter(member, path)
 
   Implements the ``'tar'`` filter.
 
-  - Strip leading slashes (``/`` and :attr:`os.sep`) from filenames.
+  - Strip leading slashes (``/`` and :data:`os.sep`) from filenames.
   - :ref:`Refuse <tarfile-extraction-refuse>` to extract files with absolute
     paths (in case the name is absolute
     even after stripping slashes, e.g. ``C:/foo`` on Windows).
@@ -942,11 +952,11 @@ reused in custom filters:
     path (after following symlinks) would end up outside the destination.
     This raises :class:`~tarfile.OutsideDestinationError`.
   - Clear high mode bits (setuid, setgid, sticky) and group/other write bits
-    (:attr:`~stat.S_IWGRP`|:attr:`~stat.S_IWOTH`).
+    (:const:`~stat.S_IWGRP`|:const:`~stat.S_IWOTH`).
 
   Return the modified ``TarInfo`` member.
 
-.. function:: data_filter(/, member, path)
+.. function:: data_filter(member, path)
 
   Implements the ``'data'`` filter.
   In addition to what ``tar_filter`` does:
@@ -967,10 +977,10 @@ reused in custom filters:
   - For regular files, including hard links:
 
     - Set the owner read and write permissions
-      (:attr:`~stat.S_IRUSR`|:attr:`~stat.S_IWUSR`).
+      (:const:`~stat.S_IRUSR`|:const:`~stat.S_IWUSR`).
     - Remove the group & other executable permission
-      (:attr:`~stat.S_IXGRP`|:attr:`~stat.S_IXOTH`)
-      if the owner doesn’t have it (:attr:`~stat.S_IXUSR`).
+      (:const:`~stat.S_IXGRP`|:const:`~stat.S_IXOTH`)
+      if the owner doesn’t have it (:const:`~stat.S_IXUSR`).
 
   - For other files (directories), set ``mode`` to ``None``, so
     that extraction methods skip applying permission bits.
@@ -1146,31 +1156,31 @@ For a list of the files in a tar archive, use the :option:`-l` option:
 Command-line options
 ~~~~~~~~~~~~~~~~~~~~
 
-.. cmdoption:: -l <tarfile>
-               --list <tarfile>
+.. option:: -l <tarfile>
+            --list <tarfile>
 
    List files in a tarfile.
 
-.. cmdoption:: -c <tarfile> <source1> ... <sourceN>
-               --create <tarfile> <source1> ... <sourceN>
+.. option:: -c <tarfile> <source1> ... <sourceN>
+            --create <tarfile> <source1> ... <sourceN>
 
    Create tarfile from source files.
 
-.. cmdoption:: -e <tarfile> [<output_dir>]
-               --extract <tarfile> [<output_dir>]
+.. option:: -e <tarfile> [<output_dir>]
+            --extract <tarfile> [<output_dir>]
 
    Extract tarfile into the current directory if *output_dir* is not specified.
 
-.. cmdoption:: -t <tarfile>
-               --test <tarfile>
+.. option:: -t <tarfile>
+            --test <tarfile>
 
    Test whether the tarfile is valid or not.
 
-.. cmdoption:: -v, --verbose
+.. option:: -v, --verbose
 
    Verbose output.
 
-.. cmdoption:: --filter <filtername>
+.. option:: --filter <filtername>
 
    Specifies the *filter* for ``--extract``.
    See :ref:`tarfile-extraction-filter` for details.
diff --git a/Doc/library/telnetlib.rst b/Doc/library/telnetlib.rst
deleted file mode 100644
index 5a993dc42a5ab2..00000000000000
--- a/Doc/library/telnetlib.rst
+++ /dev/null
@@ -1,262 +0,0 @@
-:mod:`telnetlib` --- Telnet client
-==================================
-
-.. module:: telnetlib
-   :synopsis: Telnet client class.
-   :deprecated:
-
-.. sectionauthor:: Skip Montanaro <skip@pobox.com>
-
-**Source code:** :source:`Lib/telnetlib.py`
-
-.. index:: single: protocol; Telnet
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`telnetlib` module is deprecated
-   (see :pep:`PEP 594 <594#telnetlib>` for details and alternatives).
-
---------------
-
-The :mod:`telnetlib` module provides a :class:`Telnet` class that implements the
-Telnet protocol.  See :rfc:`854` for details about the protocol. In addition, it
-provides symbolic constants for the protocol characters (see below), and for the
-telnet options. The symbolic names of the telnet options follow the definitions
-in ``arpa/telnet.h``, with the leading ``TELOPT_`` removed. For symbolic names
-of options which are traditionally not included in ``arpa/telnet.h``, see the
-module source itself.
-
-The symbolic constants for the telnet commands are: IAC, DONT, DO, WONT, WILL,
-SE (Subnegotiation End), NOP (No Operation), DM (Data Mark), BRK (Break), IP
-(Interrupt process), AO (Abort output), AYT (Are You There), EC (Erase
-Character), EL (Erase Line), GA (Go Ahead), SB (Subnegotiation Begin).
-
-.. include:: ../includes/wasm-notavail.rst
-
-.. class:: Telnet(host=None, port=0[, timeout])
-
-   :class:`Telnet` represents a connection to a Telnet server. The instance is
-   initially not connected by default; the :meth:`~Telnet.open` method must be used to
-   establish a connection.  Alternatively, the host name and optional port
-   number can be passed to the constructor too, in which case the connection to
-   the server will be established before the constructor returns.  The optional
-   *timeout* parameter specifies a timeout in seconds for blocking operations
-   like the connection attempt (if not specified, the global default timeout
-   setting will be used).
-
-   Do not reopen an already connected instance.
-
-   This class has many :meth:`read_\*` methods.  Note that some of them  raise
-   :exc:`EOFError` when the end of the connection is read, because they can return
-   an empty string for other reasons.  See the individual descriptions below.
-
-   A :class:`Telnet` object is a context manager and can be used in a
-   :keyword:`with` statement.  When the :keyword:`!with` block ends, the
-   :meth:`close` method is called::
-
-       >>> from telnetlib import Telnet
-       >>> with Telnet('localhost', 23) as tn:
-       ...     tn.interact()
-       ...
-
-   .. versionchanged:: 3.6 Context manager support added
-
-
-.. seealso::
-
-   :rfc:`854` - Telnet Protocol Specification
-      Definition of the Telnet protocol.
-
-
-.. _telnet-objects:
-
-Telnet Objects
---------------
-
-:class:`Telnet` instances have the following methods:
-
-
-.. method:: Telnet.read_until(expected, timeout=None)
-
-   Read until a given byte string, *expected*, is encountered or until *timeout*
-   seconds have passed.
-
-   When no match is found, return whatever is available instead, possibly empty
-   bytes.  Raise :exc:`EOFError` if the connection is closed and no cooked data
-   is available.
-
-
-.. method:: Telnet.read_all()
-
-   Read all data until EOF as bytes; block until connection closed.
-
-
-.. method:: Telnet.read_some()
-
-   Read at least one byte of cooked data unless EOF is hit. Return ``b''`` if
-   EOF is hit.  Block if no data is immediately available.
-
-
-.. method:: Telnet.read_very_eager()
-
-   Read everything that can be without blocking in I/O (eager).
-
-   Raise :exc:`EOFError` if connection closed and no cooked data available.
-   Return ``b''`` if no cooked data available otherwise. Do not block unless in
-   the midst of an IAC sequence.
-
-
-.. method:: Telnet.read_eager()
-
-   Read readily available data.
-
-   Raise :exc:`EOFError` if connection closed and no cooked data available.
-   Return ``b''`` if no cooked data available otherwise. Do not block unless in
-   the midst of an IAC sequence.
-
-
-.. method:: Telnet.read_lazy()
-
-   Process and return data already in the queues (lazy).
-
-   Raise :exc:`EOFError` if connection closed and no data available. Return
-   ``b''`` if no cooked data available otherwise.  Do not block unless in the
-   midst of an IAC sequence.
-
-
-.. method:: Telnet.read_very_lazy()
-
-   Return any data available in the cooked queue (very lazy).
-
-   Raise :exc:`EOFError` if connection closed and no data available. Return
-   ``b''`` if no cooked data available otherwise.  This method never blocks.
-
-
-.. method:: Telnet.read_sb_data()
-
-   Return the data collected between a SB/SE pair (suboption begin/end). The
-   callback should access these data when it was invoked with a ``SE`` command.
-   This method never blocks.
-
-
-.. method:: Telnet.open(host, port=0[, timeout])
-
-   Connect to a host. The optional second argument is the port number, which
-   defaults to the standard Telnet port (23). The optional *timeout* parameter
-   specifies a timeout in seconds for blocking operations like the connection
-   attempt (if not specified, the global default timeout setting will be used).
-
-   Do not try to reopen an already connected instance.
-
-   .. audit-event:: telnetlib.Telnet.open self,host,port telnetlib.Telnet.open
-
-
-.. method:: Telnet.msg(msg, *args)
-
-   Print a debug message when the debug level is ``>`` 0. If extra arguments are
-   present, they are substituted in the message using the standard string
-   formatting operator.
-
-
-.. method:: Telnet.set_debuglevel(debuglevel)
-
-   Set the debug level.  The higher the value of *debuglevel*, the more debug
-   output you get (on ``sys.stdout``).
-
-
-.. method:: Telnet.close()
-
-   Close the connection.
-
-
-.. method:: Telnet.get_socket()
-
-   Return the socket object used internally.
-
-
-.. method:: Telnet.fileno()
-
-   Return the file descriptor of the socket object used internally.
-
-
-.. method:: Telnet.write(buffer)
-
-   Write a byte string to the socket, doubling any IAC characters. This can
-   block if the connection is blocked.  May raise :exc:`OSError` if the
-   connection is closed.
-
-   .. audit-event:: telnetlib.Telnet.write self,buffer telnetlib.Telnet.write
-
-   .. versionchanged:: 3.3
-      This method used to raise :exc:`socket.error`, which is now an alias
-      of :exc:`OSError`.
-
-
-.. method:: Telnet.interact()
-
-   Interaction function, emulates a very dumb Telnet client.
-
-
-.. method:: Telnet.mt_interact()
-
-   Multithreaded version of :meth:`interact`.
-
-
-.. method:: Telnet.expect(list, timeout=None)
-
-   Read until one from a list of a regular expressions matches.
-
-   The first argument is a list of regular expressions, either compiled
-   (:ref:`regex objects <re-objects>`) or uncompiled (byte strings). The
-   optional second argument is a timeout, in seconds; the default is to block
-   indefinitely.
-
-   Return a tuple of three items: the index in the list of the first regular
-   expression that matches; the match object returned; and the bytes read up
-   till and including the match.
-
-   If end of file is found and no bytes were read, raise :exc:`EOFError`.
-   Otherwise, when nothing matches, return ``(-1, None, data)`` where *data* is
-   the bytes received so far (may be empty bytes if a timeout happened).
-
-   If a regular expression ends with a greedy match (such as ``.*``) or if more
-   than one expression can match the same input, the results are
-   non-deterministic, and may depend on the I/O timing.
-
-
-.. method:: Telnet.set_option_negotiation_callback(callback)
-
-   Each time a telnet option is read on the input flow, this *callback* (if set) is
-   called with the following parameters: callback(telnet socket, command
-   (DO/DONT/WILL/WONT), option).  No other action is done afterwards by telnetlib.
-
-
-.. _telnet-example:
-
-Telnet Example
---------------
-
-.. sectionauthor:: Peter Funk <pf@artcom-gmbh.de>
-
-
-A simple example illustrating typical use::
-
-   import getpass
-   import telnetlib
-
-   HOST = "localhost"
-   user = input("Enter your remote account: ")
-   password = getpass.getpass()
-
-   tn = telnetlib.Telnet(HOST)
-
-   tn.read_until(b"login: ")
-   tn.write(user.encode('ascii') + b"\n")
-   if password:
-       tn.read_until(b"Password: ")
-       tn.write(password.encode('ascii') + b"\n")
-
-   tn.write(b"ls\n")
-   tn.write(b"exit\n")
-
-   print(tn.read_all().decode('ascii'))
-
diff --git a/Doc/library/tempfile.rst b/Doc/library/tempfile.rst
index fd4c294613fd31..b68a78e8267bcc 100644
--- a/Doc/library/tempfile.rst
+++ b/Doc/library/tempfile.rst
@@ -59,7 +59,7 @@ The module defines the following user-callable items:
    platforms, it is a file-like object whose :attr:`!file` attribute is the
    underlying true file object.
 
-   The :py:data:`os.O_TMPFILE` flag is used if it is available and works
+   The :py:const:`os.O_TMPFILE` flag is used if it is available and works
    (Linux-specific, requires Linux kernel 3.11 or later).
 
    On platforms that are neither Posix nor Cygwin, TemporaryFile is an alias
@@ -69,7 +69,7 @@ The module defines the following user-callable items:
 
    .. versionchanged:: 3.5
 
-      The :py:data:`os.O_TMPFILE` flag is now used if available.
+      The :py:const:`os.O_TMPFILE` flag is now used if available.
 
    .. versionchanged:: 3.8
       Added *errors* parameter.
@@ -115,14 +115,14 @@ The module defines the following user-callable items:
    * On Windows, make sure that at least one of the following conditions are
      fulfilled:
 
-         * *delete* is false
-         * additional open shares delete access (e.g. by calling :func:`os.open`
-           with the flag ``O_TEMPORARY``)
-         * *delete* is true but *delete_on_close* is false. Note, that in this
-           case the additional opens that do not share delete access (e.g.
-           created via builtin :func:`open`) must be closed before exiting the
-           context manager, else the :func:`os.unlink` call on context manager
-           exit will fail with a :exc:`PermissionError`.
+     * *delete* is false
+     * additional open shares delete access (e.g. by calling :func:`os.open`
+       with the flag ``O_TEMPORARY``)
+     * *delete* is true but *delete_on_close* is false. Note, that in this
+       case the additional opens that do not share delete access (e.g.
+       created via builtin :func:`open`) must be closed before exiting the
+       context manager, else the :func:`os.unlink` call on context manager
+       exit will fail with a :exc:`PermissionError`.
 
    On Windows, if *delete_on_close* is false, and the file is created in a
    directory for which the user lacks delete access, then the :func:`os.unlink`
@@ -147,7 +147,7 @@ The module defines the following user-callable items:
 
    This class operates exactly as :func:`TemporaryFile` does, except that
    data is spooled in memory until the file size exceeds *max_size*, or
-   until the file's :func:`fileno` method is called, at which point the
+   until the file's :func:`~io.IOBase.fileno` method is called, at which point the
    contents are written to disk and operation proceeds as with
    :func:`TemporaryFile`.
 
@@ -404,13 +404,13 @@ Here are some examples of typical usage of the :mod:`tempfile` module::
 
     # create a temporary file using a context manager
     # close the file, use the name to open the file again
-    >>> with tempfile.TemporaryFile(delete_on_close=False) as fp:
-    ...    fp.write(b'Hello world!')
-    ...    fp.close()
-    # the file is closed, but not removed
-    # open the file again by using its name
-    ...    with open(fp.name) as f
-    ...        f.read()
+    >>> with tempfile.NamedTemporaryFile(delete_on_close=False) as fp:
+    ...     fp.write(b'Hello world!')
+    ...     fp.close()
+    ... # the file is closed, but not removed
+    ... # open the file again by using its name
+    ...     with open(fp.name, mode='rb') as f:
+    ...         f.read()
     b'Hello world!'
     >>>
     # file is now removed
diff --git a/Doc/library/termios.rst b/Doc/library/termios.rst
index fb1ff567d49e5c..57705ddc4e6470 100644
--- a/Doc/library/termios.rst
+++ b/Doc/library/termios.rst
@@ -16,6 +16,8 @@ complete description of these calls, see :manpage:`termios(3)` Unix manual
 page.  It is only available for those Unix versions that support POSIX
 *termios* style tty I/O control configured during installation.
 
+.. availability:: Unix.
+
 All functions in this module take a file descriptor *fd* as their first
 argument.  This can be an integer file descriptor, such as returned by
 ``sys.stdin.fileno()``, or a :term:`file object`, such as ``sys.stdin`` itself.
@@ -43,10 +45,20 @@ The module defines the following functions:
 
    Set the tty attributes for file descriptor *fd* from the *attributes*, which is
    a list like the one returned by :func:`tcgetattr`.  The *when* argument
-   determines when the attributes are changed: :const:`TCSANOW` to change
-   immediately, :const:`TCSADRAIN` to change after transmitting all queued output,
-   or :const:`TCSAFLUSH` to change after transmitting all queued output and
-   discarding all queued input.
+   determines when the attributes are changed:
+
+   .. data:: TCSANOW
+
+      Change attributes immediately.
+
+   .. data:: TCSADRAIN
+
+      Change attributes after transmitting all queued output.
+
+   .. data:: TCSAFLUSH
+
+      Change attributes after transmitting all queued output and
+      discarding all queued input.
 
 
 .. function:: tcsendbreak(fd, duration)
diff --git a/Doc/library/test.rst b/Doc/library/test.rst
index 20f633b8f569be..6cbdc39b3c024d 100644
--- a/Doc/library/test.rst
+++ b/Doc/library/test.rst
@@ -159,6 +159,9 @@ guidelines to be followed:
 Running tests using the command-line interface
 ----------------------------------------------
 
+.. module:: test.regrtest
+   :synopsis: Drives the regression test suite.
+
 The :mod:`test` package can be run as a script to drive Python's regression
 test suite, thanks to the :option:`-m` option: :program:`python -m test`. Under
 the hood, it uses :mod:`test.regrtest`; the call :program:`python -m
@@ -472,7 +475,7 @@ The :mod:`test.support` module defines the following functions:
 
 .. function:: with_pymalloc()
 
-   Return :data:`_testcapi.WITH_PYMALLOC`.
+   Return :const:`_testcapi.WITH_PYMALLOC`.
 
 
 .. function:: requires(resource, msg=None)
@@ -498,44 +501,6 @@ The :mod:`test.support` module defines the following functions:
    rather than looking directly in the path directories.
 
 
-.. function:: match_test(test)
-
-   Determine whether *test* matches the patterns set in :func:`set_match_tests`.
-
-
-.. function:: set_match_tests(accept_patterns=None, ignore_patterns=None)
-
-   Define match patterns on test filenames and test method names for filtering tests.
-
-
-.. function:: run_unittest(*classes)
-
-   Execute :class:`unittest.TestCase` subclasses passed to the function. The
-   function scans the classes for methods starting with the prefix ``test_``
-   and executes the tests individually.
-
-   It is also legal to pass strings as parameters; these should be keys in
-   ``sys.modules``. Each associated module will be scanned by
-   ``unittest.TestLoader.loadTestsFromModule()``. This is usually seen in the
-   following :func:`test_main` function::
-
-      def test_main():
-          support.run_unittest(__name__)
-
-   This will run all tests defined in the named module.
-
-
-.. function:: run_doctest(module, verbosity=None, optionflags=0)
-
-   Run :func:`doctest.testmod` on the given *module*.  Return
-   ``(failure_count, test_count)``.
-
-   If *verbosity* is ``None``, :func:`doctest.testmod` is run with verbosity
-   set to :data:`verbose`.  Otherwise, it is run with verbosity set to
-   ``None``.  *optionflags* is passed as ``optionflags`` to
-   :func:`doctest.testmod`.
-
-
 .. function:: get_pagesize()
 
    Get size of a page in bytes.
@@ -803,7 +768,7 @@ The :mod:`test.support` module defines the following functions:
 
 .. decorator:: requires_limited_api
 
-   Decorator for only running the test if :ref:`Limited C API <stable>`
+   Decorator for only running the test if :ref:`Limited C API <limited-c-api>`
    is available.
 
 
@@ -1040,10 +1005,10 @@ The :mod:`test.support` module defines the following classes:
    `SetErrorMode <https://msdn.microsoft.com/en-us/library/windows/desktop/ms680621.aspx>`_.
 
    On UNIX, :func:`resource.setrlimit` is used to set
-   :attr:`resource.RLIMIT_CORE`'s soft limit to 0 to prevent coredump file
+   :const:`resource.RLIMIT_CORE`'s soft limit to 0 to prevent coredump file
    creation.
 
-   On both platforms, the old value is restored by :meth:`__exit__`.
+   On both platforms, the old value is restored by :meth:`~object.__exit__`.
 
 
 .. class:: SaveSignals()
diff --git a/Doc/library/textwrap.rst b/Doc/library/textwrap.rst
index 1a9d5f98f78a7e..7445410f91808c 100644
--- a/Doc/library/textwrap.rst
+++ b/Doc/library/textwrap.rst
@@ -60,7 +60,7 @@ functions should be good enough; otherwise, you should use an instance of
    First the whitespace in *text* is collapsed (all whitespace is replaced by
    single spaces).  If the result fits in the *width*, it is returned.
    Otherwise, enough words are dropped from the end so that the remaining words
-   plus the :attr:`placeholder` fit within :attr:`width`::
+   plus the *placeholder* fit within *width*::
 
       >>> textwrap.shorten("Hello  world!", width=12)
       'Hello world!'
@@ -173,7 +173,7 @@ hyphenated words; only then will long words be broken if necessary, unless
    .. attribute:: expand_tabs
 
       (default: ``True``) If true, then all tab characters in *text* will be
-      expanded to spaces using the :meth:`expandtabs` method of *text*.
+      expanded to spaces using the :meth:`~str.expandtabs` method of *text*.
 
 
    .. attribute:: tabsize
@@ -238,7 +238,7 @@ hyphenated words; only then will long words be broken if necessary, unless
       However, the sentence detection algorithm is imperfect: it assumes that a
       sentence ending consists of a lowercase letter followed by one of ``'.'``,
       ``'!'``, or ``'?'``, possibly followed by one of ``'"'`` or ``"'"``,
-      followed by a space.  One problem with this is algorithm is that it is
+      followed by a space.  One problem with this algorithm is that it is
       unable to detect the difference between "Dr." in ::
 
          [...] Dr. Frankenstein's monster [...]
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 83ed48052704fb..b85b7f008d1594 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -127,10 +127,13 @@ This module defines the following functions:
    Its value may be used to uniquely identify this particular thread system-wide
    (until the thread terminates, after which the value may be recycled by the OS).
 
-   .. availability:: Windows, FreeBSD, Linux, macOS, OpenBSD, NetBSD, AIX, DragonFlyBSD.
+   .. availability:: Windows, FreeBSD, Linux, macOS, OpenBSD, NetBSD, AIX, DragonFlyBSD, GNU/kFreeBSD.
 
    .. versionadded:: 3.8
 
+   .. versionchanged:: 3.13
+      Added support for GNU/kFreeBSD.
+
 
 .. function:: enumerate()
 
@@ -272,7 +275,7 @@ The instance's values will be different for separate threads.
    A class that represents thread-local data.
 
    For more details and extensive examples, see the documentation string of the
-   :mod:`_threading_local` module: :source:`Lib/_threading_local.py`.
+   :mod:`!_threading_local` module: :source:`Lib/_threading_local.py`.
 
 
 .. _thread-objects:
@@ -285,7 +288,7 @@ thread of control.  There are two ways to specify the activity: by passing a
 callable object to the constructor, or by overriding the :meth:`~Thread.run`
 method in a subclass.  No other methods (except for the constructor) should be
 overridden in a subclass.  In other words, *only*  override the
-:meth:`~Thread.__init__` and :meth:`~Thread.run` methods of this class.
+``__init__()`` and :meth:`~Thread.run` methods of this class.
 
 Once a thread object is created, its activity must be started by calling the
 thread's :meth:`~Thread.start` method.  This invokes the :meth:`~Thread.run`
@@ -337,7 +340,7 @@ since it is impossible to detect the termination of alien threads.
    are:
 
    *group* should be ``None``; reserved for future extension when a
-   :class:`ThreadGroup` class is implemented.
+   :class:`!ThreadGroup` class is implemented.
 
    *target* is the callable object to be invoked by the :meth:`run` method.
    Defaults to ``None``, meaning nothing is called.
@@ -1009,7 +1012,7 @@ This class represents an action that should be run only after a certain amount
 of time has passed --- a timer.  :class:`Timer` is a subclass of :class:`Thread`
 and as such also functions as an example of creating custom threads.
 
-Timers are started, as with threads, by calling their :meth:`~Timer.start`
+Timers are started, as with threads, by calling their :meth:`Timer.start <Thread.start>`
 method.  The timer can be stopped (before its action has begun) by calling the
 :meth:`~Timer.cancel` method.  The interval the timer will wait before
 executing its action may not be exactly the same as the interval specified by
@@ -1147,10 +1150,10 @@ As an example, here is a simple way to synchronize a client and server thread::
 Using locks, conditions, and semaphores in the :keyword:`!with` statement
 -------------------------------------------------------------------------
 
-All of the objects provided by this module that have :meth:`acquire` and
-:meth:`release` methods can be used as context managers for a :keyword:`with`
-statement.  The :meth:`acquire` method will be called when the block is
-entered, and :meth:`release` will be called when the block is exited.  Hence,
+All of the objects provided by this module that have ``acquire`` and
+``release`` methods can be used as context managers for a :keyword:`with`
+statement.  The ``acquire`` method will be called when the block is
+entered, and ``release`` will be called when the block is exited.  Hence,
 the following snippet::
 
    with some_lock:
diff --git a/Doc/library/time.rst b/Doc/library/time.rst
index 9f23a6fc7d5341..577600881676b3 100644
--- a/Doc/library/time.rst
+++ b/Doc/library/time.rst
@@ -71,8 +71,8 @@ An explanation of some terminology and conventions is in order.
 * On the other hand, the precision of :func:`.time` and :func:`sleep` is better
   than their Unix equivalents: times are expressed as floating point numbers,
   :func:`.time` returns the most accurate time available (using Unix
-  :c:func:`gettimeofday` where available), and :func:`sleep` will accept a time
-  with a nonzero fraction (Unix :c:func:`select` is used to implement this, where
+  :c:func:`!gettimeofday` where available), and :func:`sleep` will accept a time
+  with a nonzero fraction (Unix :c:func:`!select` is used to implement this, where
   available).
 
 * The time value as returned by :func:`gmtime`, :func:`localtime`, and
@@ -84,12 +84,14 @@ An explanation of some terminology and conventions is in order.
   See :class:`struct_time` for a description of these objects.
 
   .. versionchanged:: 3.3
-     The :class:`struct_time` type was extended to provide the :attr:`tm_gmtoff`
-     and :attr:`tm_zone` attributes when platform supports corresponding
+     The :class:`struct_time` type was extended to provide
+     the :attr:`~struct_time.tm_gmtoff` and :attr:`~struct_time.tm_zone`
+     attributes when platform supports corresponding
      ``struct tm`` members.
 
   .. versionchanged:: 3.6
-     The :class:`struct_time` attributes :attr:`tm_gmtoff` and :attr:`tm_zone`
+     The :class:`struct_time` attributes
+     :attr:`~struct_time.tm_gmtoff` and :attr:`~struct_time.tm_zone`
      are now available on all platforms.
 
 * Use the following functions to convert between time representations:
@@ -379,6 +381,8 @@ Functions
    * Or use ``nanosleep()`` if available (resolution: 1 nanosecond);
    * Or use ``select()`` (resolution: 1 microsecond).
 
+   .. audit-event:: time.sleep secs
+
    .. versionchanged:: 3.11
       On Unix, the ``clock_nanosleep()`` and ``nanosleep()`` functions are now
       used if available. On Windows, a waitable timer is now used.
@@ -389,6 +393,9 @@ Functions
       :pep:`475` for the rationale).
 
 
+   .. versionchanged:: 3.13
+      Raises an auditing event.
+
 .. index::
    single: % (percent); datetime format
 
@@ -496,6 +503,8 @@ Functions
       When used with the :func:`strptime` function, the ``%p`` directive only affects
       the output hour field if the ``%I`` directive is used to parse the hour.
 
+   .. _leap-second:
+
    (2)
       The range really is ``0`` to ``61``; value ``60`` is valid in
       timestamps representing `leap seconds`_ and value ``61`` is supported
@@ -566,32 +575,55 @@ Functions
    tuple` interface: values can be accessed by index and by attribute name.  The
    following values are present:
 
-   +-------+-------------------+---------------------------------+
-   | Index | Attribute         | Values                          |
-   +=======+===================+=================================+
-   | 0     | :attr:`tm_year`   | (for example, 1993)             |
-   +-------+-------------------+---------------------------------+
-   | 1     | :attr:`tm_mon`    | range [1, 12]                   |
-   +-------+-------------------+---------------------------------+
-   | 2     | :attr:`tm_mday`   | range [1, 31]                   |
-   +-------+-------------------+---------------------------------+
-   | 3     | :attr:`tm_hour`   | range [0, 23]                   |
-   +-------+-------------------+---------------------------------+
-   | 4     | :attr:`tm_min`    | range [0, 59]                   |
-   +-------+-------------------+---------------------------------+
-   | 5     | :attr:`tm_sec`    | range [0, 61]; see **(2)** in   |
-   |       |                   | :func:`strftime` description    |
-   +-------+-------------------+---------------------------------+
-   | 6     | :attr:`tm_wday`   | range [0, 6], Monday is 0       |
-   +-------+-------------------+---------------------------------+
-   | 7     | :attr:`tm_yday`   | range [1, 366]                  |
-   +-------+-------------------+---------------------------------+
-   | 8     | :attr:`tm_isdst`  | 0, 1 or -1; see below           |
-   +-------+-------------------+---------------------------------+
-   | N/A   | :attr:`tm_zone`   | abbreviation of timezone name   |
-   +-------+-------------------+---------------------------------+
-   | N/A   | :attr:`tm_gmtoff` | offset east of UTC in seconds   |
-   +-------+-------------------+---------------------------------+
+   .. list-table::
+
+      * - Index
+        - Attribute
+        - Values
+
+      * - 0
+        - .. attribute:: tm_year
+        - (for example, 1993)
+
+      * - 1
+        - .. attribute:: tm_mon
+        - range [1, 12]
+
+      * - 2
+        - .. attribute:: tm_day
+        - range [1, 31]
+
+      * - 3
+        - .. attribute:: tm_hour
+        - range [0, 23]
+
+      * - 4
+        - .. attribute:: tm_min
+        - range [0, 59]
+
+      * - 5
+        - .. attribute:: tm_sec
+        - range [0, 61]; see :ref:`Note (2) <leap-second>` in :func:`strftime`
+
+      * - 6
+        - .. attribute:: tm_wday
+        - range [0, 6]; Monday is 0
+
+      * - 7
+        - .. attribute:: tm_yday
+        - range [1, 366]
+
+      * - 8
+        - .. attribute:: tm_isdst
+        - 0, 1 or -1; see below
+
+      * - N/A
+        - .. attribute:: tm_zone
+        - abbreviation of timezone name
+
+      * - N/A
+        - .. attribute:: tm_gmtoff
+        - offset east of UTC in seconds
 
    Note that unlike the C structure, the month value is a range of [1, 12], not
    [0, 11].
@@ -912,8 +944,8 @@ Timezone Constants
    For the above Timezone constants (:data:`altzone`, :data:`daylight`, :data:`timezone`,
    and :data:`tzname`), the value is determined by the timezone rules in effect
    at module load time or the last time :func:`tzset` is called and may be incorrect
-   for times in the past.  It is recommended to use the :attr:`tm_gmtoff` and
-   :attr:`tm_zone` results from :func:`localtime` to obtain timezone information.
+   for times in the past.  It is recommended to use the :attr:`~struct_time.tm_gmtoff` and
+   :attr:`~struct_time.tm_zone` results from :func:`localtime` to obtain timezone information.
 
 
 .. seealso::
diff --git a/Doc/library/timeit.rst b/Doc/library/timeit.rst
index 32ab565aba0c08..616f8365b80f6c 100644
--- a/Doc/library/timeit.rst
+++ b/Doc/library/timeit.rst
@@ -27,11 +27,11 @@ can be used to compare three different expressions:
 
 .. code-block:: shell-session
 
-   $ python -m timeit '"-".join(str(n) for n in range(100))'
+   $ python -m timeit "'-'.join(str(n) for n in range(100))"
    10000 loops, best of 5: 30.2 usec per loop
-   $ python -m timeit '"-".join([str(n) for n in range(100)])'
+   $ python -m timeit "'-'.join([str(n) for n in range(100)])"
    10000 loops, best of 5: 27.5 usec per loop
-   $ python -m timeit '"-".join(map(str, range(100)))'
+   $ python -m timeit "'-'.join(map(str, range(100)))"
    10000 loops, best of 5: 23.2 usec per loop
 
 This can be achieved from the :ref:`python-interface` with::
@@ -86,9 +86,11 @@ The module defines three convenience functions and a public class:
    .. versionchanged:: 3.7
       Default value of *repeat* changed from 3 to 5.
 
+
 .. function:: default_timer()
 
-   The default timer, which is always :func:`time.perf_counter`.
+   The default timer, which is always time.perf_counter(), returns float seconds.
+   An alternative, time.perf_counter_ns, returns integer nanoseconds.
 
    .. versionchanged:: 3.3
       :func:`time.perf_counter` is now the default timer.
@@ -124,7 +126,7 @@ The module defines three convenience functions and a public class:
 
       Time *number* executions of the main statement.  This executes the setup
       statement once, and then returns the time it takes to execute the main
-      statement a number of times, measured in seconds as a float.
+      statement a number of times.  The default timer returns seconds as a float.
       The argument is the number of times through the loop, defaulting to one
       million.  The main statement, the setup statement and the timer function
       to be used are passed to the constructor.
@@ -149,7 +151,7 @@ The module defines three convenience functions and a public class:
       so that the total time >= 0.2 second, returning the eventual
       (number of loops, time taken for that number of loops). It calls
       :meth:`.timeit` with increasing numbers from the sequence 1, 2, 5,
-      10, 20, 50, ... until the time taken is at least 0.2 second.
+      10, 20, 50, ... until the time taken is at least 0.2 seconds.
 
       If *callback* is given and is not ``None``, it will be called after
       each trial with two arguments: ``callback(number, time_taken)``.
@@ -212,36 +214,36 @@ Where the following options are understood:
 
 .. program:: timeit
 
-.. cmdoption:: -n N, --number=N
+.. option:: -n N, --number=N
 
    how many times to execute 'statement'
 
-.. cmdoption:: -r N, --repeat=N
+.. option:: -r N, --repeat=N
 
    how many times to repeat the timer (default 5)
 
-.. cmdoption:: -s S, --setup=S
+.. option:: -s S, --setup=S
 
    statement to be executed once initially (default ``pass``)
 
-.. cmdoption:: -p, --process
+.. option:: -p, --process
 
    measure process time, not wallclock time, using :func:`time.process_time`
    instead of :func:`time.perf_counter`, which is the default
 
    .. versionadded:: 3.3
 
-.. cmdoption:: -u, --unit=U
+.. option:: -u, --unit=U
 
    specify a time unit for timer output; can select ``nsec``, ``usec``, ``msec``, or ``sec``
 
    .. versionadded:: 3.5
 
-.. cmdoption:: -v, --verbose
+.. option:: -v, --verbose
 
    print raw timing results; repeat for more digits precision
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    print a short usage message and exit
 
@@ -277,9 +279,9 @@ It is possible to provide a setup statement that is executed only once at the be
 
 .. code-block:: shell-session
 
-   $ python -m timeit -s 'text = "sample string"; char = "g"'  'char in text'
+   $ python -m timeit -s "text = 'sample string'; char = 'g'" "char in text"
    5000000 loops, best of 5: 0.0877 usec per loop
-   $ python -m timeit -s 'text = "sample string"; char = "g"'  'text.find(char)'
+   $ python -m timeit -s "text = 'sample string'; char = 'g'" "text.find(char)"
    1000000 loops, best of 5: 0.342 usec per loop
 
 In the output, there are three fields. The loop count, which tells you how many
@@ -313,14 +315,14 @@ to test for missing and present object attributes:
 
 .. code-block:: shell-session
 
-   $ python -m timeit 'try:' '  str.__bool__' 'except AttributeError:' '  pass'
+   $ python -m timeit "try:" "  str.__bool__" "except AttributeError:" "  pass"
    20000 loops, best of 5: 15.7 usec per loop
-   $ python -m timeit 'if hasattr(str, "__bool__"): pass'
+   $ python -m timeit "if hasattr(str, '__bool__'): pass"
    50000 loops, best of 5: 4.26 usec per loop
 
-   $ python -m timeit 'try:' '  int.__bool__' 'except AttributeError:' '  pass'
+   $ python -m timeit "try:" "  int.__bool__" "except AttributeError:" "  pass"
    200000 loops, best of 5: 1.43 usec per loop
-   $ python -m timeit 'if hasattr(int, "__bool__"): pass'
+   $ python -m timeit "if hasattr(int, '__bool__'): pass"
    100000 loops, best of 5: 2.23 usec per loop
 
 ::
diff --git a/Doc/library/tk.rst b/Doc/library/tk.rst
index 3dc2130539c2cf..0593f8b73ea545 100644
--- a/Doc/library/tk.rst
+++ b/Doc/library/tk.rst
@@ -12,8 +12,7 @@ Graphical User Interfaces with Tk
 
 Tk/Tcl has long been an integral part of Python.  It provides a robust and
 platform independent windowing toolkit, that is available to Python programmers
-using the :mod:`tkinter` package, and its extension, the :mod:`tkinter.tix` and
-the :mod:`tkinter.ttk` modules.
+using the :mod:`tkinter` package, and its extension, the :mod:`tkinter.ttk` module.
 
 The :mod:`tkinter` package is a thin object-oriented layer on top of Tcl/Tk. To
 use :mod:`tkinter`, you don't need to write Tcl code, but you will need to
@@ -39,7 +38,6 @@ alternative `GUI frameworks and tools <https://wiki.python.org/moin/GuiProgrammi
    tkinter.scrolledtext.rst
    tkinter.dnd.rst
    tkinter.ttk.rst
-   tkinter.tix.rst
    idle.rst
 
 .. Other sections I have in mind are
diff --git a/Doc/library/tkinter.messagebox.rst b/Doc/library/tkinter.messagebox.rst
index 56c1d6c132afd2..56090a0a0e424b 100644
--- a/Doc/library/tkinter.messagebox.rst
+++ b/Doc/library/tkinter.messagebox.rst
@@ -11,7 +11,8 @@
 
 The :mod:`tkinter.messagebox` module provides a template base class as well as
 a variety of convenience methods for commonly used configurations. The message
-boxes are modal and will return a subset of (True, False, OK, None, Yes, No) based on
+boxes are modal and will return a subset of (``True``, ``False``, ``None``,
+:data:`OK`, :data:`CANCEL`, :data:`YES`, :data:`NO`) based on
 the user's selection. Common message box styles and layouts include but are not
 limited to:
 
@@ -19,21 +20,175 @@ limited to:
 
 .. class:: Message(master=None, **options)
 
-   Create a default information message box.
+   Create a message window with an application-specified message, an icon
+   and a set of buttons.
+   Each of the buttons in the message window is identified by a unique symbolic name (see the *type* options).
+
+   The following options are supported:
+
+      *command*
+         Specifies the function to invoke when the user closes the dialog.
+         The name of the button clicked by the user to close the dialog is
+         passed as argument.
+         This is only available on macOS.
+
+      *default*
+         Gives the :ref:`symbolic name <messagebox-buttons>` of the default button
+         for this message window (:data:`OK`, :data:`CANCEL`, and so on).
+         If this option is not specified, the first button in the dialog will
+         be made the default.
+
+      *detail*
+         Specifies an auxiliary message to the main message given by the
+         *message* option.
+         The message detail will be presented beneath the main message and,
+         where supported by the OS, in a less emphasized font than the main
+         message.
+
+      *icon*
+         Specifies an :ref:`icon <messagebox-icons>` to display.
+         If this option is not specified, then the :data:`INFO` icon will be
+         displayed.
+
+      *message*
+         Specifies the message to display in this message box.
+         The default value is an empty string.
+
+      *parent*
+         Makes the specified window the logical parent of the message box.
+         The message box is displayed on top of its parent window.
+
+      *title*
+         Specifies a string to display as the title of the message box.
+         This option is ignored on macOS, where platform guidelines forbid
+         the use of a title on this kind of dialog.
+
+      *type*
+         Arranges for a :ref:`predefined set of buttons <messagebox-types>`
+         to be displayed.
+
+   .. method:: show(**options)
+
+      Display a message window and wait for the user to select one of the buttons. Then return the symbolic name of the selected button.
+      Keyword arguments can override options specified in the constructor.
+
 
 **Information message box**
 
-.. method:: showinfo(title=None, message=None, **options)
+.. function:: showinfo(title=None, message=None, **options)
+
+   Creates and displays an information message box with the specified title
+   and message.
 
 **Warning message boxes**
 
-.. method:: showwarning(title=None, message=None, **options)
-            showerror(title=None, message=None, **options)
+.. function:: showwarning(title=None, message=None, **options)
+
+   Creates and displays a warning message box with the specified title
+   and message.
+
+.. function:: showerror(title=None, message=None, **options)
+
+   Creates and displays an error message box with the specified title
+   and message.
 
 **Question message boxes**
 
-.. method:: askquestion(title=None, message=None, **options)
-            askokcancel(title=None, message=None, **options)
-            askretrycancel(title=None, message=None, **options)
-            askyesno(title=None, message=None, **options)
-            askyesnocancel(title=None, message=None, **options)
+.. function:: askquestion(title=None, message=None, *, type=YESNO, **options)
+
+   Ask a question. By default shows buttons :data:`YES` and :data:`NO`.
+   Returns the symbolic name of the selected button.
+
+.. function:: askokcancel(title=None, message=None, **options)
+
+   Ask if operation should proceed. Shows buttons :data:`OK` and :data:`CANCEL`.
+   Returns ``True`` if the answer is ok and ``False`` otherwise.
+
+.. function:: askretrycancel(title=None, message=None, **options)
+
+   Ask if operation should be retried. Shows buttons :data:`RETRY` and :data:`CANCEL`.
+   Return ``True`` if the answer is yes and ``False`` otherwise.
+
+.. function:: askyesno(title=None, message=None, **options)
+
+   Ask a question. Shows buttons :data:`YES` and :data:`NO`.
+   Returns ``True`` if the answer is yes and ``False`` otherwise.
+
+.. function:: askyesnocancel(title=None, message=None, **options)
+
+   Ask a question. Shows buttons :data:`YES`, :data:`NO` and :data:`CANCEL`.
+   Return ``True`` if the answer is yes, ``None`` if cancelled, and ``False``
+   otherwise.
+
+
+.. _messagebox-buttons:
+
+Symbolic names of buttons:
+
+.. data:: ABORT
+   :value: 'abort'
+.. data:: RETRY
+   :value: 'retry'
+.. data:: IGNORE
+   :value: 'ignore'
+.. data:: OK
+   :value: 'ok'
+.. data:: CANCEL
+   :value: 'cancel'
+.. data:: YES
+   :value: 'yes'
+.. data:: NO
+   :value: 'no'
+
+.. _messagebox-types:
+
+Predefined sets of buttons:
+
+.. data:: ABORTRETRYIGNORE
+   :value: 'abortretryignore'
+
+   Displays three buttons whose symbolic names are :data:`ABORT`,
+   :data:`RETRY` and :data:`IGNORE`.
+
+.. data:: OK
+   :value: 'ok'
+   :noindex:
+
+   Displays one button whose symbolic name is :data:`OK`.
+
+.. data:: OKCANCEL
+   :value: 'okcancel'
+
+   Displays two buttons whose symbolic names are :data:`OK` and
+   :data:`CANCEL`.
+
+.. data:: RETRYCANCEL
+   :value: 'retrycancel'
+
+   Displays two buttons whose symbolic names are :data:`RETRY` and
+   :data:`CANCEL`.
+
+.. data:: YESNO
+   :value: 'yesno'
+
+   Displays two buttons whose symbolic names are :data:`YES` and
+   :data:`NO`.
+
+.. data:: YESNOCANCEL
+   :value: 'yesnocancel'
+
+   Displays three buttons whose symbolic names are :data:`YES`,
+   :data:`NO` and :data:`CANCEL`.
+
+.. _messagebox-icons:
+
+Icon images:
+
+.. data:: ERROR
+   :value: 'error'
+.. data:: INFO
+   :value: 'info'
+.. data:: QUESTION
+   :value: 'question'
+.. data:: WARNING
+   :value: 'warning'
diff --git a/Doc/library/tkinter.rst b/Doc/library/tkinter.rst
index c8e4317be75879..e084d8554c7c09 100644
--- a/Doc/library/tkinter.rst
+++ b/Doc/library/tkinter.rst
@@ -58,8 +58,8 @@ details that are unchanged.
    * `Modern Tkinter for Busy Python Developers <https://tkdocs.com/book.html>`_
       By Mark Roseman. (ISBN 978-1999149567)
 
-   * `Python and Tkinter Programming <https://www.packtpub.com/product/python-gui-programming-with-tkinter/9781788835886>`_
-      By Alan Moore. (ISBN 978-1788835886)
+   * `Python GUI programming with Tkinter <https://www.packtpub.com/product/python-gui-programming-with-tkinter/9781788835886>`_
+      By Alan D. Moore. (ISBN 978-1788835886)
 
    * `Programming Python <https://learning-python.com/about-pp4e.html>`_
       By Mark Lutz; has excellent coverage of Tkinter. (ISBN 978-0596158101)
@@ -163,7 +163,7 @@ the modern themed widget set and API::
    interpreter and calls :func:`exec` on the contents of
    :file:`.{className}.py` and :file:`.{baseName}.py`.  The path for the
    profile files is the :envvar:`HOME` environment variable or, if that
-   isn't defined, then :attr:`os.curdir`.
+   isn't defined, then :data:`os.curdir`.
 
    .. attribute:: tk
 
@@ -232,6 +232,9 @@ The modules that provide Tk support include:
 
 Additional modules:
 
+.. module:: _tkinter
+   :synopsis: A binary module that contains the low-level interface to Tcl/Tk.
+
 :mod:`_tkinter`
    A binary module that contains the low-level interface to Tcl/Tk.
    It is automatically imported by the main :mod:`tkinter` module,
@@ -252,10 +255,6 @@ Additional modules:
    (experimental) Drag-and-drop support for :mod:`tkinter`. This will
    become deprecated when it is replaced with the Tk DND.
 
-:mod:`tkinter.tix`
-   (deprecated) An older third-party Tcl/Tk package that adds several new
-   widgets. Better alternatives for most can be found in :mod:`tkinter.ttk`.
-
 :mod:`turtle`
    Turtle graphics in a Tk window.
 
@@ -352,7 +351,7 @@ Understanding How Tkinter Wraps Tcl/Tk
 
 When your application uses Tkinter's classes and methods, internally Tkinter
 is assembling strings representing Tcl/Tk commands, and executing those
-commands in the Tcl interpreter attached to your applicaton's :class:`Tk`
+commands in the Tcl interpreter attached to your application's :class:`Tk`
 instance.
 
 Whether it's trying to navigate reference documentation, trying to find
@@ -533,24 +532,24 @@ interpreter will fail.
 
 A number of special cases exist:
 
-  * Tcl/Tk libraries can be built so they are not thread-aware. In this case,
-    :mod:`tkinter` calls the library from the originating Python thread, even
-    if this is different than the thread that created the Tcl interpreter. A global
-    lock ensures only one call occurs at a time.
+* Tcl/Tk libraries can be built so they are not thread-aware. In this case,
+  :mod:`tkinter` calls the library from the originating Python thread, even
+  if this is different than the thread that created the Tcl interpreter. A global
+  lock ensures only one call occurs at a time.
 
-  * While :mod:`tkinter` allows you to create more than one instance of a :class:`Tk`
-    object (with its own interpreter), all interpreters that are part of the same
-    thread share a common event queue, which gets ugly fast. In practice, don't create
-    more than one instance of :class:`Tk` at a time. Otherwise, it's best to create
-    them in separate threads and ensure you're running a thread-aware Tcl/Tk build.
+* While :mod:`tkinter` allows you to create more than one instance of a :class:`Tk`
+  object (with its own interpreter), all interpreters that are part of the same
+  thread share a common event queue, which gets ugly fast. In practice, don't create
+  more than one instance of :class:`Tk` at a time. Otherwise, it's best to create
+  them in separate threads and ensure you're running a thread-aware Tcl/Tk build.
 
-  * Blocking event handlers are not the only way to prevent the Tcl interpreter from
-    reentering the event loop. It is even possible to run multiple nested event loops
-    or abandon the event loop entirely. If you're doing anything tricky when it comes
-    to events or threads, be aware of these possibilities.
+* Blocking event handlers are not the only way to prevent the Tcl interpreter from
+  reentering the event loop. It is even possible to run multiple nested event loops
+  or abandon the event loop entirely. If you're doing anything tricky when it comes
+  to events or threads, be aware of these possibilities.
 
-  * There are a few select :mod:`tkinter` functions that presently work only when
-    called from the thread that created the Tcl interpreter.
+* There are a few select :mod:`tkinter` functions that presently work only when
+  called from the thread that created the Tcl interpreter.
 
 
 Handy Reference
diff --git a/Doc/library/tkinter.tix.rst b/Doc/library/tkinter.tix.rst
deleted file mode 100644
index c86fcfa6a3f46d..00000000000000
--- a/Doc/library/tkinter.tix.rst
+++ /dev/null
@@ -1,583 +0,0 @@
-:mod:`tkinter.tix` --- Extension widgets for Tk
-===============================================
-
-.. module:: tkinter.tix
-   :synopsis: Tk Extension Widgets for Tkinter
-
-.. sectionauthor:: Mike Clarkson <mikeclarkson@users.sourceforge.net>
-
-**Source code:** :source:`Lib/tkinter/tix.py`
-
-.. index:: single: Tix
-
-.. deprecated:: 3.6
-   This Tk extension is unmaintained and should not be used in new code.  Use
-   :mod:`tkinter.ttk` instead.
-
---------------
-
-The :mod:`tkinter.tix` (Tk Interface Extension) module provides an additional
-rich set of widgets. Although the standard Tk library has many useful widgets,
-they are far from complete. The :mod:`tkinter.tix` library provides most of the
-commonly needed widgets that are missing from standard Tk: :class:`HList`,
-:class:`ComboBox`, :class:`Control` (a.k.a. SpinBox) and an assortment of
-scrollable widgets.
-:mod:`tkinter.tix` also includes many more widgets that are generally useful in
-a wide range of applications: :class:`NoteBook`, :class:`FileEntry`,
-:class:`PanedWindow`, etc; there are more than 40 of them.
-
-With all these new widgets, you can introduce new interaction techniques into
-applications, creating more useful and more intuitive user interfaces. You can
-design your application by choosing the most appropriate widgets to match the
-special needs of your application and users.
-
-.. seealso::
-
-   `Tix Homepage <https://tix.sourceforge.net/>`_
-      The home page for :mod:`Tix`.  This includes links to additional documentation
-      and downloads.
-
-   `Tix Man Pages <https://tix.sourceforge.net/dist/current/man/>`_
-      On-line version of the man pages and reference material.
-
-   `Tix Programming Guide <https://tix.sourceforge.net/dist/current/docs/tix-book/tix.book.html>`_
-      On-line version of the programmer's reference material.
-
-   `Tix Development Applications <https://tix.sourceforge.net/Tixapps/src/Tide.html>`_
-      Tix applications for development of Tix and Tkinter programs. Tide applications
-      work under Tk or Tkinter, and include :program:`TixInspect`, an inspector to
-      remotely modify and debug Tix/Tk/Tkinter applications.
-
-
-Using Tix
----------
-
-
-.. class:: Tk(screenName=None, baseName=None, className='Tix')
-
-   Toplevel widget of Tix which represents mostly the main window of an
-   application. It has an associated Tcl interpreter.
-
-   Classes in the :mod:`tkinter.tix` module subclasses the classes in the
-   :mod:`tkinter`. The former imports the latter, so to use :mod:`tkinter.tix`
-   with Tkinter, all you need to do is to import one module. In general, you
-   can just import :mod:`tkinter.tix`, and replace the toplevel call to
-   :class:`tkinter.Tk` with :class:`tix.Tk`::
-
-      from tkinter import tix
-      from tkinter.constants import *
-      root = tix.Tk()
-
-To use :mod:`tkinter.tix`, you must have the Tix widgets installed, usually
-alongside your installation of the Tk widgets. To test your installation, try
-the following::
-
-   from tkinter import tix
-   root = tix.Tk()
-   root.tk.eval('package require Tix')
-
-
-Tix Widgets
------------
-
-`Tix <https://tix.sourceforge.net/dist/current/man/html/TixCmd/TixIntro.htm>`_
-introduces over 40 widget classes to the :mod:`tkinter` repertoire.
-
-
-Basic Widgets
-^^^^^^^^^^^^^
-
-
-.. class:: Balloon()
-
-   A `Balloon
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixBalloon.htm>`_ that
-   pops up over a widget to provide help.  When the user moves the cursor inside a
-   widget to which a Balloon widget has been bound, a small pop-up window with a
-   descriptive message will be shown on the screen.
-
-.. Python Demo of:
-.. \ulink{Balloon}{https://tix.sourceforge.net/dist/current/demos/samples/Balloon.tcl}
-
-
-.. class:: ButtonBox()
-
-   The `ButtonBox
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixButtonBox.htm>`_
-   widget creates a box of buttons, such as is commonly used for ``Ok Cancel``.
-
-.. Python Demo of:
-.. \ulink{ButtonBox}{https://tix.sourceforge.net/dist/current/demos/samples/BtnBox.tcl}
-
-
-.. class:: ComboBox()
-
-   The `ComboBox
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixComboBox.htm>`_
-   widget is similar to the combo box control in MS Windows. The user can select a
-   choice by either typing in the entry subwidget or selecting from the listbox
-   subwidget.
-
-.. Python Demo of:
-.. \ulink{ComboBox}{https://tix.sourceforge.net/dist/current/demos/samples/ComboBox.tcl}
-
-
-.. class:: Control()
-
-   The `Control
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixControl.htm>`_
-   widget is also known as the :class:`SpinBox` widget. The user can adjust the
-   value by pressing the two arrow buttons or by entering the value directly into
-   the entry. The new value will be checked against the user-defined upper and
-   lower limits.
-
-.. Python Demo of:
-.. \ulink{Control}{https://tix.sourceforge.net/dist/current/demos/samples/Control.tcl}
-
-
-.. class:: LabelEntry()
-
-   The `LabelEntry
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixLabelEntry.htm>`_
-   widget packages an entry widget and a label into one mega widget. It can
-   be used to simplify the creation of "entry-form" type of interface.
-
-.. Python Demo of:
-.. \ulink{LabelEntry}{https://tix.sourceforge.net/dist/current/demos/samples/LabEntry.tcl}
-
-
-.. class:: LabelFrame()
-
-   The `LabelFrame
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixLabelFrame.htm>`_
-   widget packages a frame widget and a label into one mega widget.  To create
-   widgets inside a LabelFrame widget, one creates the new widgets relative to the
-   :attr:`frame` subwidget and manage them inside the :attr:`frame` subwidget.
-
-.. Python Demo of:
-.. \ulink{LabelFrame}{https://tix.sourceforge.net/dist/current/demos/samples/LabFrame.tcl}
-
-
-.. class:: Meter()
-
-   The `Meter
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixMeter.htm>`_ widget
-   can be used to show the progress of a background job which may take a long time
-   to execute.
-
-.. Python Demo of:
-.. \ulink{Meter}{https://tix.sourceforge.net/dist/current/demos/samples/Meter.tcl}
-
-
-.. class:: OptionMenu()
-
-   The `OptionMenu
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixOptionMenu.htm>`_
-   creates a menu button of options.
-
-.. Python Demo of:
-.. \ulink{OptionMenu}{https://tix.sourceforge.net/dist/current/demos/samples/OptMenu.tcl}
-
-
-.. class:: PopupMenu()
-
-   The `PopupMenu
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixPopupMenu.htm>`_
-   widget can be used as a replacement of the ``tk_popup`` command. The advantage
-   of the :mod:`Tix` :class:`PopupMenu` widget is it requires less application code
-   to manipulate.
-
-.. Python Demo of:
-.. \ulink{PopupMenu}{https://tix.sourceforge.net/dist/current/demos/samples/PopMenu.tcl}
-
-
-.. class:: Select()
-
-   The `Select
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixSelect.htm>`_ widget
-   is a container of button subwidgets. It can be used to provide radio-box or
-   check-box style of selection options for the user.
-
-.. Python Demo of:
-.. \ulink{Select}{https://tix.sourceforge.net/dist/current/demos/samples/Select.tcl}
-
-
-.. class:: StdButtonBox()
-
-   The `StdButtonBox
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixStdButtonBox.htm>`_
-   widget is a group of standard buttons for Motif-like dialog boxes.
-
-.. Python Demo of:
-.. \ulink{StdButtonBox}{https://tix.sourceforge.net/dist/current/demos/samples/StdBBox.tcl}
-
-
-File Selectors
-^^^^^^^^^^^^^^
-
-
-.. class:: DirList()
-
-   The `DirList
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixDirList.htm>`_
-   widget displays a list view of a directory, its previous directories and its
-   sub-directories. The user can choose one of the directories displayed in the
-   list or change to another directory.
-
-.. Python Demo of:
-.. \ulink{DirList}{https://tix.sourceforge.net/dist/current/demos/samples/DirList.tcl}
-
-
-.. class:: DirTree()
-
-   The `DirTree
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixDirTree.htm>`_
-   widget displays a tree view of a directory, its previous directories and its
-   sub-directories. The user can choose one of the directories displayed in the
-   list or change to another directory.
-
-.. Python Demo of:
-.. \ulink{DirTree}{https://tix.sourceforge.net/dist/current/demos/samples/DirTree.tcl}
-
-
-.. class:: DirSelectDialog()
-
-   The `DirSelectDialog
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixDirSelectDialog.htm>`_
-   widget presents the directories in the file system in a dialog window.  The user
-   can use this dialog window to navigate through the file system to select the
-   desired directory.
-
-.. Python Demo of:
-.. \ulink{DirSelectDialog}{https://tix.sourceforge.net/dist/current/demos/samples/DirDlg.tcl}
-
-
-.. class:: DirSelectBox()
-
-   The :class:`DirSelectBox` is similar to the standard Motif(TM)
-   directory-selection box. It is generally used for the user to choose a
-   directory.  DirSelectBox stores the directories mostly recently selected into
-   a ComboBox widget so that they can be quickly selected again.
-
-
-.. class:: ExFileSelectBox()
-
-   The `ExFileSelectBox
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixExFileSelectBox.htm>`_
-   widget is usually embedded in a tixExFileSelectDialog widget. It provides a
-   convenient method for the user to select files. The style of the
-   :class:`ExFileSelectBox` widget is very similar to the standard file dialog on
-   MS Windows 3.1.
-
-.. Python Demo of:
-.. \ulink{ExFileSelectDialog}{https://tix.sourceforge.net/dist/current/demos/samples/EFileDlg.tcl}
-
-
-.. class:: FileSelectBox()
-
-   The `FileSelectBox
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixFileSelectBox.htm>`_
-   is similar to the standard Motif(TM) file-selection box. It is generally used
-   for the user to choose a file. FileSelectBox stores the files mostly recently
-   selected into a :class:`ComboBox` widget so that they can be quickly selected
-   again.
-
-.. Python Demo of:
-.. \ulink{FileSelectDialog}{https://tix.sourceforge.net/dist/current/demos/samples/FileDlg.tcl}
-
-
-.. class:: FileEntry()
-
-   The `FileEntry
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixFileEntry.htm>`_
-   widget can be used to input a filename. The user can type in the filename
-   manually. Alternatively, the user can press the button widget that sits next to
-   the entry, which will bring up a file selection dialog.
-
-.. Python Demo of:
-.. \ulink{FileEntry}{https://tix.sourceforge.net/dist/current/demos/samples/FileEnt.tcl}
-
-
-Hierarchical ListBox
-^^^^^^^^^^^^^^^^^^^^
-
-
-.. class:: HList()
-
-   The `HList
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixHList.htm>`_ widget
-   can be used to display any data that have a hierarchical structure, for example,
-   file system directory trees. The list entries are indented and connected by
-   branch lines according to their places in the hierarchy.
-
-.. Python Demo of:
-.. \ulink{HList}{https://tix.sourceforge.net/dist/current/demos/samples/HList1.tcl}
-
-
-.. class:: CheckList()
-
-   The `CheckList
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixCheckList.htm>`_
-   widget displays a list of items to be selected by the user. CheckList acts
-   similarly to the Tk checkbutton or radiobutton widgets, except it is capable of
-   handling many more items than checkbuttons or radiobuttons.
-
-.. Python Demo of:
-.. \ulink{ CheckList}{https://tix.sourceforge.net/dist/current/demos/samples/ChkList.tcl}
-.. Python Demo of:
-.. \ulink{ScrolledHList (1)}{https://tix.sourceforge.net/dist/current/demos/samples/SHList.tcl}
-.. Python Demo of:
-.. \ulink{ScrolledHList (2)}{https://tix.sourceforge.net/dist/current/demos/samples/SHList2.tcl}
-
-
-.. class:: Tree()
-
-   The `Tree
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixTree.htm>`_ widget
-   can be used to display hierarchical data in a tree form. The user can adjust the
-   view of the tree by opening or closing parts of the tree.
-
-.. Python Demo of:
-.. \ulink{Tree}{https://tix.sourceforge.net/dist/current/demos/samples/Tree.tcl}
-.. Python Demo of:
-.. \ulink{Tree (Dynamic)}{https://tix.sourceforge.net/dist/current/demos/samples/DynTree.tcl}
-
-
-Tabular ListBox
-^^^^^^^^^^^^^^^
-
-
-.. class:: TList()
-
-   The `TList
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixTList.htm>`_ widget
-   can be used to display data in a tabular format. The list entries of a
-   :class:`TList` widget are similar to the entries in the Tk listbox widget.  The
-   main differences are (1) the :class:`TList` widget can display the list entries
-   in a two dimensional format and (2) you can use graphical images as well as
-   multiple colors and fonts for the list entries.
-
-.. Python Demo of:
-.. \ulink{ScrolledTList (1)}{https://tix.sourceforge.net/dist/current/demos/samples/STList1.tcl}
-.. Python Demo of:
-.. \ulink{ScrolledTList (2)}{https://tix.sourceforge.net/dist/current/demos/samples/STList2.tcl}
-.. Grid has yet to be added to Python
-.. \subsubsection{Grid Widget}
-.. Python Demo of:
-.. \ulink{Simple Grid}{https://tix.sourceforge.net/dist/current/demos/samples/SGrid0.tcl}
-.. Python Demo of:
-.. \ulink{ScrolledGrid}{https://tix.sourceforge.net/dist/current/demos/samples/SGrid1.tcl}
-.. Python Demo of:
-.. \ulink{Editable Grid}{https://tix.sourceforge.net/dist/current/demos/samples/EditGrid.tcl}
-
-
-Manager Widgets
-^^^^^^^^^^^^^^^
-
-
-.. class:: PanedWindow()
-
-   The `PanedWindow
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixPanedWindow.htm>`_
-   widget allows the user to interactively manipulate the sizes of several panes.
-   The panes can be arranged either vertically or horizontally.  The user changes
-   the sizes of the panes by dragging the resize handle between two panes.
-
-.. Python Demo of:
-.. \ulink{PanedWindow}{https://tix.sourceforge.net/dist/current/demos/samples/PanedWin.tcl}
-
-
-.. class:: ListNoteBook()
-
-   The `ListNoteBook
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixListNoteBook.htm>`_
-   widget is very similar to the :class:`TixNoteBook` widget: it can be used to
-   display many windows in a limited space using a notebook metaphor. The notebook
-   is divided into a stack of pages (windows). At one time only one of these pages
-   can be shown. The user can navigate through these pages by choosing the name of
-   the desired page in the :attr:`hlist` subwidget.
-
-.. Python Demo of:
-.. \ulink{ListNoteBook}{https://tix.sourceforge.net/dist/current/demos/samples/ListNBK.tcl}
-
-
-.. class:: NoteBook()
-
-   The `NoteBook
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixNoteBook.htm>`_
-   widget can be used to display many windows in a limited space using a notebook
-   metaphor. The notebook is divided into a stack of pages. At one time only one of
-   these pages can be shown. The user can navigate through these pages by choosing
-   the visual "tabs" at the top of the NoteBook widget.
-
-.. Python Demo of:
-.. \ulink{NoteBook}{https://tix.sourceforge.net/dist/current/demos/samples/NoteBook.tcl}
-
-.. \subsubsection{Scrolled Widgets}
-.. Python Demo of:
-.. \ulink{ScrolledListBox}{https://tix.sourceforge.net/dist/current/demos/samples/SListBox.tcl}
-.. Python Demo of:
-.. \ulink{ScrolledText}{https://tix.sourceforge.net/dist/current/demos/samples/SText.tcl}
-.. Python Demo of:
-.. \ulink{ScrolledWindow}{https://tix.sourceforge.net/dist/current/demos/samples/SWindow.tcl}
-.. Python Demo of:
-.. \ulink{Canvas Object View}{https://tix.sourceforge.net/dist/current/demos/samples/CObjView.tcl}
-
-
-Image Types
-^^^^^^^^^^^
-
-The :mod:`tkinter.tix` module adds:
-
-* `pixmap <https://tix.sourceforge.net/dist/current/man/html/TixCmd/pixmap.htm>`_
-  capabilities to all :mod:`tkinter.tix` and :mod:`tkinter` widgets to create
-  color images from XPM files.
-
-  .. Python Demo of:
-  .. \ulink{XPM Image In Button}{https://tix.sourceforge.net/dist/current/demos/samples/Xpm.tcl}
-  .. Python Demo of:
-  .. \ulink{XPM Image In Menu}{https://tix.sourceforge.net/dist/current/demos/samples/Xpm1.tcl}
-
-* `Compound
-  <https://tix.sourceforge.net/dist/current/man/html/TixCmd/compound.htm>`_ image
-  types can be used to create images that consists of multiple horizontal lines;
-  each line is composed of a series of items (texts, bitmaps, images or spaces)
-  arranged from left to right. For example, a compound image can be used to
-  display a bitmap and a text string simultaneously in a Tk :class:`Button`
-  widget.
-
-  .. Python Demo of:
-  .. \ulink{Compound Image In Buttons}{https://tix.sourceforge.net/dist/current/demos/samples/CmpImg.tcl}
-  .. Python Demo of:
-  .. \ulink{Compound Image In NoteBook}{https://tix.sourceforge.net/dist/current/demos/samples/CmpImg2.tcl}
-  .. Python Demo of:
-  .. \ulink{Compound Image Notebook Color Tabs}{https://tix.sourceforge.net/dist/current/demos/samples/CmpImg4.tcl}
-  .. Python Demo of:
-  .. \ulink{Compound Image Icons}{https://tix.sourceforge.net/dist/current/demos/samples/CmpImg3.tcl}
-
-
-Miscellaneous Widgets
-^^^^^^^^^^^^^^^^^^^^^
-
-
-.. class:: InputOnly()
-
-   The `InputOnly
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixInputOnly.htm>`_
-   widgets are to accept inputs from the user, which can be done with the ``bind``
-   command (Unix only).
-
-
-Form Geometry Manager
-^^^^^^^^^^^^^^^^^^^^^
-
-In addition, :mod:`tkinter.tix` augments :mod:`tkinter` by providing:
-
-
-.. class:: Form()
-
-   The `Form
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tixForm.htm>`_ geometry
-   manager based on attachment rules for all Tk widgets.
-
-
-Tix Commands
-------------
-
-
-.. class:: tixCommand()
-
-   The `tix commands
-   <https://tix.sourceforge.net/dist/current/man/html/TixCmd/tix.htm>`_ provide
-   access to miscellaneous elements of :mod:`Tix`'s internal state and the
-   :mod:`Tix` application context.  Most of the information manipulated by these
-   methods pertains to the application as a whole, or to a screen or display,
-   rather than to a particular window.
-
-   To view the current settings, the common usage is::
-
-      from tkinter import tix
-      root = tix.Tk()
-      print(root.tix_configure())
-
-
-.. method:: tixCommand.tix_configure(cnf=None, **kw)
-
-   Query or modify the configuration options of the Tix application context. If no
-   option is specified, returns a dictionary all of the available options.  If
-   option is specified with no value, then the method returns a list describing the
-   one named option (this list will be identical to the corresponding sublist of
-   the value returned if no option is specified).  If one or more option-value
-   pairs are specified, then the method modifies the given option(s) to have the
-   given value(s); in this case the method returns an empty string. Option may be
-   any of the configuration options.
-
-
-.. method:: tixCommand.tix_cget(option)
-
-   Returns the current value of the configuration option given by *option*. Option
-   may be any of the configuration options.
-
-
-.. method:: tixCommand.tix_getbitmap(name)
-
-   Locates a bitmap file of the name ``name.xpm`` or ``name`` in one of the bitmap
-   directories (see the :meth:`tix_addbitmapdir` method).  By using
-   :meth:`tix_getbitmap`, you can avoid hard coding the pathnames of the bitmap
-   files in your application. When successful, it returns the complete pathname of
-   the bitmap file, prefixed with the character ``@``.  The returned value can be
-   used to configure the ``bitmap`` option of the Tk and Tix widgets.
-
-
-.. method:: tixCommand.tix_addbitmapdir(directory)
-
-   Tix maintains a list of directories under which the :meth:`tix_getimage` and
-   :meth:`tix_getbitmap` methods will search for image files.  The standard bitmap
-   directory is :file:`$TIX_LIBRARY/bitmaps`. The :meth:`tix_addbitmapdir` method
-   adds *directory* into this list. By using this method, the image files of an
-   applications can also be located using the :meth:`tix_getimage` or
-   :meth:`tix_getbitmap` method.
-
-
-.. method:: tixCommand.tix_filedialog([dlgclass])
-
-   Returns the file selection dialog that may be shared among different calls from
-   this application.  This method will create a file selection dialog widget when
-   it is called the first time. This dialog will be returned by all subsequent
-   calls to :meth:`tix_filedialog`.  An optional dlgclass parameter can be passed
-   as a string to specified what type of file selection dialog widget is desired.
-   Possible options are ``tix``, ``FileSelectDialog`` or ``tixExFileSelectDialog``.
-
-
-.. method:: tixCommand.tix_getimage(self, name)
-
-   Locates an image file of the name :file:`name.xpm`, :file:`name.xbm` or
-   :file:`name.ppm` in one of the bitmap directories (see the
-   :meth:`tix_addbitmapdir` method above). If more than one file with the same name
-   (but different extensions) exist, then the image type is chosen according to the
-   depth of the X display: xbm images are chosen on monochrome displays and color
-   images are chosen on color displays. By using :meth:`tix_getimage`, you can
-   avoid hard coding the pathnames of the image files in your application. When
-   successful, this method returns the name of the newly created image, which can
-   be used to configure the ``image`` option of the Tk and Tix widgets.
-
-
-.. method:: tixCommand.tix_option_get(name)
-
-   Gets the options maintained by the Tix scheme mechanism.
-
-
-.. method:: tixCommand.tix_resetoptions(newScheme, newFontSet[, newScmPrio])
-
-   Resets the scheme and fontset of the Tix application to *newScheme* and
-   *newFontSet*, respectively.  This affects only those widgets created after this
-   call.  Therefore, it is best to call the resetoptions method before the creation
-   of any widgets in a Tix application.
-
-   The optional parameter *newScmPrio* can be given to reset the priority level of
-   the Tk options set by the Tix schemes.
-
-   Because of the way Tk handles the X option database, after Tix has been has
-   imported and inited, it is not possible to reset the color schemes and font sets
-   using the :meth:`tix_config` method. Instead, the :meth:`tix_resetoptions`
-   method must be used.
diff --git a/Doc/library/tkinter.ttk.rst b/Doc/library/tkinter.ttk.rst
index 4ff2b2159c3622..6e01ec7b291255 100644
--- a/Doc/library/tkinter.ttk.rst
+++ b/Doc/library/tkinter.ttk.rst
@@ -102,35 +102,35 @@ themed widgets and is not supposed to be directly instantiated.
 Standard Options
 ^^^^^^^^^^^^^^^^
 
-All the :mod:`ttk` Widgets accepts the following options:
-
-   .. tabularcolumns:: |l|L|
-
-   +-----------+--------------------------------------------------------------+
-   | Option    | Description                                                  |
-   +===========+==============================================================+
-   | class     | Specifies the window class. The class is used when querying  |
-   |           | the option database for the window's other options, to       |
-   |           | determine the default bindtags for the window, and to select |
-   |           | the widget's default layout and style. This option is        |
-   |           | read-only, and may only be specified when the window is      |
-   |           | created.                                                     |
-   +-----------+--------------------------------------------------------------+
-   | cursor    | Specifies the mouse cursor to be used for the widget. If set |
-   |           | to the empty string (the default), the cursor is inherited   |
-   |           | for the parent widget.                                       |
-   +-----------+--------------------------------------------------------------+
-   | takefocus | Determines whether the window accepts the focus during       |
-   |           | keyboard traversal. 0, 1 or an empty string is returned.     |
-   |           | If 0 is returned, it means that the window should be skipped |
-   |           | entirely during keyboard traversal. If 1, it means that the  |
-   |           | window should receive the input focus as long as it is       |
-   |           | viewable. And an empty string means that the traversal       |
-   |           | scripts make the decision about whether or not to focus      |
-   |           | on the window.                                               |
-   +-----------+--------------------------------------------------------------+
-   | style     | May be used to specify a custom widget style.                |
-   +-----------+--------------------------------------------------------------+
+All the :mod:`ttk` Widgets accept the following options:
+
+.. tabularcolumns:: |l|L|
+
++-----------+--------------------------------------------------------------+
+| Option    | Description                                                  |
++===========+==============================================================+
+| class     | Specifies the window class. The class is used when querying  |
+|           | the option database for the window's other options, to       |
+|           | determine the default bindtags for the window, and to select |
+|           | the widget's default layout and style. This option is        |
+|           | read-only, and may only be specified when the window is      |
+|           | created.                                                     |
++-----------+--------------------------------------------------------------+
+| cursor    | Specifies the mouse cursor to be used for the widget. If set |
+|           | to the empty string (the default), the cursor is inherited   |
+|           | for the parent widget.                                       |
++-----------+--------------------------------------------------------------+
+| takefocus | Determines whether the window accepts the focus during       |
+|           | keyboard traversal. 0, 1 or an empty string is returned.     |
+|           | If 0 is returned, it means that the window should be skipped |
+|           | entirely during keyboard traversal. If 1, it means that the  |
+|           | window should receive the input focus as long as it is       |
+|           | viewable. And an empty string means that the traversal       |
+|           | scripts make the decision about whether or not to focus      |
+|           | on the window.                                               |
++-----------+--------------------------------------------------------------+
+| style     | May be used to specify a custom widget style.                |
++-----------+--------------------------------------------------------------+
 
 
 Scrollable Widget Options
@@ -139,24 +139,24 @@ Scrollable Widget Options
 The following options are supported by widgets that are controlled by a
 scrollbar.
 
-   .. tabularcolumns:: |l|L|
-
-   +----------------+---------------------------------------------------------+
-   | Option         | Description                                             |
-   +================+=========================================================+
-   | xscrollcommand | Used to communicate with horizontal scrollbars.         |
-   |                |                                                         |
-   |                | When the view in the widget's window change, the widget |
-   |                | will generate a Tcl command based on the scrollcommand. |
-   |                |                                                         |
-   |                | Usually this option consists of the method              |
-   |                | :meth:`Scrollbar.set` of some scrollbar. This will cause|
-   |                | the scrollbar to be updated whenever the view in the    |
-   |                | window changes.                                         |
-   +----------------+---------------------------------------------------------+
-   | yscrollcommand | Used to communicate with vertical scrollbars.           |
-   |                | For some more information, see above.                   |
-   +----------------+---------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++----------------+---------------------------------------------------------+
+| Option         | Description                                             |
++================+=========================================================+
+| xscrollcommand | Used to communicate with horizontal scrollbars.         |
+|                |                                                         |
+|                | When the view in the widget's window change, the widget |
+|                | will generate a Tcl command based on the scrollcommand. |
+|                |                                                         |
+|                | Usually this option consists of the method              |
+|                | :meth:`Scrollbar.set` of some scrollbar. This will cause|
+|                | the scrollbar to be updated whenever the view in the    |
+|                | window changes.                                         |
++----------------+---------------------------------------------------------+
+| yscrollcommand | Used to communicate with vertical scrollbars.           |
+|                | For some more information, see above.                   |
++----------------+---------------------------------------------------------+
 
 
 Label Options
@@ -165,93 +165,93 @@ Label Options
 The following options are supported by labels, buttons and other button-like
 widgets.
 
-   .. tabularcolumns:: |l|p{0.7\linewidth}|
-
-   +--------------+-----------------------------------------------------------+
-   | Option       | Description                                               |
-   +==============+===========================================================+
-   | text         | Specifies a text string to be displayed inside the widget.|
-   +--------------+-----------------------------------------------------------+
-   | textvariable | Specifies a name whose value will be used in place of the |
-   |              | text option resource.                                     |
-   +--------------+-----------------------------------------------------------+
-   | underline    | If set, specifies the index (0-based) of a character to   |
-   |              | underline in the text string. The underline character is  |
-   |              | used for mnemonic activation.                             |
-   +--------------+-----------------------------------------------------------+
-   | image        | Specifies an image to display. This is a list of 1 or more|
-   |              | elements. The first element is the default image name. The|
-   |              | rest of the list if a sequence of statespec/value pairs as|
-   |              | defined by :meth:`Style.map`, specifying different images |
-   |              | to use when the widget is in a particular state or a      |
-   |              | combination of states. All images in the list should have |
-   |              | the same size.                                            |
-   +--------------+-----------------------------------------------------------+
-   | compound     | Specifies how to display the image relative to the text,  |
-   |              | in the case both text and images options are present.     |
-   |              | Valid values are:                                         |
-   |              |                                                           |
-   |              | * text: display text only                                 |
-   |              | * image: display image only                               |
-   |              | * top, bottom, left, right: display image above, below,   |
-   |              |   left of, or right of the text, respectively.            |
-   |              | * none: the default. display the image if present,        |
-   |              |   otherwise the text.                                     |
-   +--------------+-----------------------------------------------------------+
-   | width        | If greater than zero, specifies how much space, in        |
-   |              | character widths, to allocate for the text label, if less |
-   |              | than zero, specifies a minimum width. If zero or          |
-   |              | unspecified, the natural width of the text label is used. |
-   +--------------+-----------------------------------------------------------+
+.. tabularcolumns:: |l|p{0.7\linewidth}|
+
++--------------+-----------------------------------------------------------+
+| Option       | Description                                               |
++==============+===========================================================+
+| text         | Specifies a text string to be displayed inside the widget.|
++--------------+-----------------------------------------------------------+
+| textvariable | Specifies a name whose value will be used in place of the |
+|              | text option resource.                                     |
++--------------+-----------------------------------------------------------+
+| underline    | If set, specifies the index (0-based) of a character to   |
+|              | underline in the text string. The underline character is  |
+|              | used for mnemonic activation.                             |
++--------------+-----------------------------------------------------------+
+| image        | Specifies an image to display. This is a list of 1 or more|
+|              | elements. The first element is the default image name. The|
+|              | rest of the list if a sequence of statespec/value pairs as|
+|              | defined by :meth:`Style.map`, specifying different images |
+|              | to use when the widget is in a particular state or a      |
+|              | combination of states. All images in the list should have |
+|              | the same size.                                            |
++--------------+-----------------------------------------------------------+
+| compound     | Specifies how to display the image relative to the text,  |
+|              | in the case both text and images options are present.     |
+|              | Valid values are:                                         |
+|              |                                                           |
+|              | * text: display text only                                 |
+|              | * image: display image only                               |
+|              | * top, bottom, left, right: display image above, below,   |
+|              |   left of, or right of the text, respectively.            |
+|              | * none: the default. display the image if present,        |
+|              |   otherwise the text.                                     |
++--------------+-----------------------------------------------------------+
+| width        | If greater than zero, specifies how much space, in        |
+|              | character widths, to allocate for the text label, if less |
+|              | than zero, specifies a minimum width. If zero or          |
+|              | unspecified, the natural width of the text label is used. |
++--------------+-----------------------------------------------------------+
 
 
 Compatibility Options
 ^^^^^^^^^^^^^^^^^^^^^
 
-   .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
-   +--------+----------------------------------------------------------------+
-   | Option | Description                                                    |
-   +========+================================================================+
-   | state  | May be set to "normal" or "disabled" to control the "disabled" |
-   |        | state bit. This is a write-only option: setting it changes the |
-   |        | widget state, but the :meth:`Widget.state` method does not     |
-   |        | affect this option.                                            |
-   +--------+----------------------------------------------------------------+
++--------+----------------------------------------------------------------+
+| Option | Description                                                    |
++========+================================================================+
+| state  | May be set to "normal" or "disabled" to control the "disabled" |
+|        | state bit. This is a write-only option: setting it changes the |
+|        | widget state, but the :meth:`Widget.state` method does not     |
+|        | affect this option.                                            |
++--------+----------------------------------------------------------------+
 
 Widget States
 ^^^^^^^^^^^^^
 
 The widget state is a bitmap of independent state flags.
 
-   .. tabularcolumns:: |l|L|
-
-   +------------+-------------------------------------------------------------+
-   | Flag       | Description                                                 |
-   +============+=============================================================+
-   | active     | The mouse cursor is over the widget and pressing a mouse    |
-   |            | button will cause some action to occur                      |
-   +------------+-------------------------------------------------------------+
-   | disabled   | Widget is disabled under program control                    |
-   +------------+-------------------------------------------------------------+
-   | focus      | Widget has keyboard focus                                   |
-   +------------+-------------------------------------------------------------+
-   | pressed    | Widget is being pressed                                     |
-   +------------+-------------------------------------------------------------+
-   | selected   | "On", "true", or "current" for things like Checkbuttons and |
-   |            | radiobuttons                                                |
-   +------------+-------------------------------------------------------------+
-   | background | Windows and Mac have a notion of an "active" or foreground  |
-   |            | window. The *background* state is set for widgets in a      |
-   |            | background window, and cleared for those in the foreground  |
-   |            | window                                                      |
-   +------------+-------------------------------------------------------------+
-   | readonly   | Widget should not allow user modification                   |
-   +------------+-------------------------------------------------------------+
-   | alternate  | A widget-specific alternate display format                  |
-   +------------+-------------------------------------------------------------+
-   | invalid    | The widget's value is invalid                               |
-   +------------+-------------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++------------+-------------------------------------------------------------+
+| Flag       | Description                                                 |
++============+=============================================================+
+| active     | The mouse cursor is over the widget and pressing a mouse    |
+|            | button will cause some action to occur                      |
++------------+-------------------------------------------------------------+
+| disabled   | Widget is disabled under program control                    |
++------------+-------------------------------------------------------------+
+| focus      | Widget has keyboard focus                                   |
++------------+-------------------------------------------------------------+
+| pressed    | Widget is being pressed                                     |
++------------+-------------------------------------------------------------+
+| selected   | "On", "true", or "current" for things like Checkbuttons and |
+|            | radiobuttons                                                |
++------------+-------------------------------------------------------------+
+| background | Windows and Mac have a notion of an "active" or foreground  |
+|            | window. The *background* state is set for widgets in a      |
+|            | background window, and cleared for those in the foreground  |
+|            | window                                                      |
++------------+-------------------------------------------------------------+
+| readonly   | Widget should not allow user modification                   |
++------------+-------------------------------------------------------------+
+| alternate  | A widget-specific alternate display format                  |
++------------+-------------------------------------------------------------+
+| invalid    | The widget's value is invalid                               |
++------------+-------------------------------------------------------------+
 
 A state specification is a sequence of state names, optionally prefixed with
 an exclamation point indicating that the bit is off.
@@ -311,43 +311,43 @@ Options
 
 This widget accepts the following specific options:
 
-   .. tabularcolumns:: |l|L|
-
-   +-----------------+--------------------------------------------------------+
-   | Option          | Description                                            |
-   +=================+========================================================+
-   | exportselection | Boolean value. If set, the widget selection is linked  |
-   |                 | to the Window Manager selection (which can be returned |
-   |                 | by invoking Misc.selection_get, for example).          |
-   +-----------------+--------------------------------------------------------+
-   | justify         | Specifies how the text is aligned within the widget.   |
-   |                 | One of "left", "center", or "right".                   |
-   +-----------------+--------------------------------------------------------+
-   | height          | Specifies the height of the pop-down listbox, in rows. |
-   +-----------------+--------------------------------------------------------+
-   | postcommand     | A script (possibly registered with Misc.register) that |
-   |                 | is called immediately before displaying the values. It |
-   |                 | may specify which values to display.                   |
-   +-----------------+--------------------------------------------------------+
-   | state           | One of "normal", "readonly", or "disabled". In the     |
-   |                 | "readonly" state, the value may not be edited directly,|
-   |                 | and the user can only selection of the values from the |
-   |                 | dropdown list. In the "normal" state, the text field is|
-   |                 | directly editable. In the "disabled" state, no         |
-   |                 | interaction is possible.                               |
-   +-----------------+--------------------------------------------------------+
-   | textvariable    | Specifies a name whose value is linked to the widget   |
-   |                 | value. Whenever the value associated with that name    |
-   |                 | changes, the widget value is updated, and vice versa.  |
-   |                 | See :class:`tkinter.StringVar`.                        |
-   +-----------------+--------------------------------------------------------+
-   | values          | Specifies the list of values to display in the         |
-   |                 | drop-down listbox.                                     |
-   +-----------------+--------------------------------------------------------+
-   | width           | Specifies an integer value indicating the desired width|
-   |                 | of the entry window, in average-size characters of the |
-   |                 | widget's font.                                         |
-   +-----------------+--------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++-----------------+--------------------------------------------------------+
+| Option          | Description                                            |
++=================+========================================================+
+| exportselection | Boolean value. If set, the widget selection is linked  |
+|                 | to the Window Manager selection (which can be returned |
+|                 | by invoking Misc.selection_get, for example).          |
++-----------------+--------------------------------------------------------+
+| justify         | Specifies how the text is aligned within the widget.   |
+|                 | One of "left", "center", or "right".                   |
++-----------------+--------------------------------------------------------+
+| height          | Specifies the height of the pop-down listbox, in rows. |
++-----------------+--------------------------------------------------------+
+| postcommand     | A script (possibly registered with Misc.register) that |
+|                 | is called immediately before displaying the values. It |
+|                 | may specify which values to display.                   |
++-----------------+--------------------------------------------------------+
+| state           | One of "normal", "readonly", or "disabled". In the     |
+|                 | "readonly" state, the value may not be edited directly,|
+|                 | and the user can only selection of the values from the |
+|                 | dropdown list. In the "normal" state, the text field is|
+|                 | directly editable. In the "disabled" state, no         |
+|                 | interaction is possible.                               |
++-----------------+--------------------------------------------------------+
+| textvariable    | Specifies a name whose value is linked to the widget   |
+|                 | value. Whenever the value associated with that name    |
+|                 | changes, the widget value is updated, and vice versa.  |
+|                 | See :class:`tkinter.StringVar`.                        |
++-----------------+--------------------------------------------------------+
+| values          | Specifies the list of values to display in the         |
+|                 | drop-down listbox.                                     |
++-----------------+--------------------------------------------------------+
+| width           | Specifies an integer value indicating the desired width|
+|                 | of the entry window, in average-size characters of the |
+|                 | widget's font.                                         |
++-----------------+--------------------------------------------------------+
 
 
 Virtual events
@@ -397,7 +397,7 @@ Options
 
 This widget accepts the following specific options:
 
-  .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
 +----------------------+------------------------------------------------------+
 | Option               | Description                                          |
@@ -473,25 +473,25 @@ Options
 
 This widget accepts the following specific options:
 
-   .. tabularcolumns:: |l|L|
-
-   +---------+----------------------------------------------------------------+
-   | Option  | Description                                                    |
-   +=========+================================================================+
-   | height  | If present and greater than zero, specifies the desired height |
-   |         | of the pane area (not including internal padding or tabs).     |
-   |         | Otherwise, the maximum height of all panes is used.            |
-   +---------+----------------------------------------------------------------+
-   | padding | Specifies the amount of extra space to add around the outside  |
-   |         | of the notebook. The padding is a list up to four length       |
-   |         | specifications left top right bottom. If fewer than four       |
-   |         | elements are specified, bottom defaults to top, right defaults |
-   |         | to left, and top defaults to left.                             |
-   +---------+----------------------------------------------------------------+
-   | width   | If present and greater than zero, specified the desired width  |
-   |         | of the pane area (not including internal padding). Otherwise,  |
-   |         | the maximum width of all panes is used.                        |
-   +---------+----------------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++---------+----------------------------------------------------------------+
+| Option  | Description                                                    |
++=========+================================================================+
+| height  | If present and greater than zero, specifies the desired height |
+|         | of the pane area (not including internal padding or tabs).     |
+|         | Otherwise, the maximum height of all panes is used.            |
++---------+----------------------------------------------------------------+
+| padding | Specifies the amount of extra space to add around the outside  |
+|         | of the notebook. The padding is a list up to four length       |
+|         | specifications left top right bottom. If fewer than four       |
+|         | elements are specified, bottom defaults to top, right defaults |
+|         | to left, and top defaults to left.                             |
++---------+----------------------------------------------------------------+
+| width   | If present and greater than zero, specified the desired width  |
+|         | of the pane area (not including internal padding). Otherwise,  |
+|         | the maximum width of all panes is used.                        |
++---------+----------------------------------------------------------------+
 
 
 Tab Options
@@ -499,39 +499,39 @@ Tab Options
 
 There are also specific options for tabs:
 
-   .. tabularcolumns:: |l|L|
-
-   +-----------+--------------------------------------------------------------+
-   | Option    | Description                                                  |
-   +===========+==============================================================+
-   | state     | Either "normal", "disabled" or "hidden". If "disabled", then |
-   |           | the tab is not selectable. If "hidden", then the tab is not  |
-   |           | shown.                                                       |
-   +-----------+--------------------------------------------------------------+
-   | sticky    | Specifies how the child window is positioned within the pane |
-   |           | area. Value is a string containing zero or more of the       |
-   |           | characters "n", "s", "e" or "w". Each letter refers to a     |
-   |           | side (north, south, east or west) that the child window will |
-   |           | stick to, as per the :meth:`grid` geometry manager.          |
-   +-----------+--------------------------------------------------------------+
-   | padding   | Specifies the amount of extra space to add between the       |
-   |           | notebook and this pane. Syntax is the same as for the option |
-   |           | padding used by this widget.                                 |
-   +-----------+--------------------------------------------------------------+
-   | text      | Specifies a text to be displayed in the tab.                 |
-   +-----------+--------------------------------------------------------------+
-   | image     | Specifies an image to display in the tab. See the option     |
-   |           | image described in :class:`Widget`.                          |
-   +-----------+--------------------------------------------------------------+
-   | compound  | Specifies how to display the image relative to the text, in  |
-   |           | the case both options text and image are present. See        |
-   |           | `Label Options`_ for legal values.                           |
-   +-----------+--------------------------------------------------------------+
-   | underline | Specifies the index (0-based) of a character to underline in |
-   |           | the text string. The underlined character is used for        |
-   |           | mnemonic activation if :meth:`Notebook.enable_traversal` is  |
-   |           | called.                                                      |
-   +-----------+--------------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++-----------+--------------------------------------------------------------+
+| Option    | Description                                                  |
++===========+==============================================================+
+| state     | Either "normal", "disabled" or "hidden". If "disabled", then |
+|           | the tab is not selectable. If "hidden", then the tab is not  |
+|           | shown.                                                       |
++-----------+--------------------------------------------------------------+
+| sticky    | Specifies how the child window is positioned within the pane |
+|           | area. Value is a string containing zero or more of the       |
+|           | characters "n", "s", "e" or "w". Each letter refers to a     |
+|           | side (north, south, east or west) that the child window will |
+|           | stick to, as per the :meth:`grid` geometry manager.          |
++-----------+--------------------------------------------------------------+
+| padding   | Specifies the amount of extra space to add between the       |
+|           | notebook and this pane. Syntax is the same as for the option |
+|           | padding used by this widget.                                 |
++-----------+--------------------------------------------------------------+
+| text      | Specifies a text to be displayed in the tab.                 |
++-----------+--------------------------------------------------------------+
+| image     | Specifies an image to display in the tab. See the option     |
+|           | image described in :class:`Widget`.                          |
++-----------+--------------------------------------------------------------+
+| compound  | Specifies how to display the image relative to the text, in  |
+|           | the case both options text and image are present. See        |
+|           | `Label Options`_ for legal values.                           |
++-----------+--------------------------------------------------------------+
+| underline | Specifies the index (0-based) of a character to underline in |
+|           | the text string. The underlined character is used for        |
+|           | mnemonic activation if :meth:`Notebook.enable_traversal` is  |
+|           | called.                                                      |
++-----------+--------------------------------------------------------------+
 
 
 Tab Identifiers
@@ -663,36 +663,36 @@ Options
 
 This widget accepts the following specific options:
 
-   .. tabularcolumns:: |l|L|
-
-   +----------+---------------------------------------------------------------+
-   | Option   | Description                                                   |
-   +==========+===============================================================+
-   | orient   | One of "horizontal" or "vertical". Specifies the orientation  |
-   |          | of the progress bar.                                          |
-   +----------+---------------------------------------------------------------+
-   | length   | Specifies the length of the long axis of the progress bar     |
-   |          | (width if horizontal, height if vertical).                    |
-   +----------+---------------------------------------------------------------+
-   | mode     | One of "determinate" or "indeterminate".                      |
-   +----------+---------------------------------------------------------------+
-   | maximum  | A number specifying the maximum value. Defaults to 100.       |
-   +----------+---------------------------------------------------------------+
-   | value    | The current value of the progress bar. In "determinate" mode, |
-   |          | this represents the amount of work completed. In              |
-   |          | "indeterminate" mode, it is interpreted as modulo *maximum*;  |
-   |          | that is, the progress bar completes one "cycle" when its value|
-   |          | increases by *maximum*.                                       |
-   +----------+---------------------------------------------------------------+
-   | variable | A name which is linked to the option value. If specified, the |
-   |          | value of the progress bar is automatically set to the value of|
-   |          | this name whenever the latter is modified.                    |
-   +----------+---------------------------------------------------------------+
-   | phase    | Read-only option. The widget periodically increments the value|
-   |          | of this option whenever its value is greater than 0 and, in   |
-   |          | determinate mode, less than maximum. This option may be used  |
-   |          | by the current theme to provide additional animation effects. |
-   +----------+---------------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++----------+---------------------------------------------------------------+
+| Option   | Description                                                   |
++==========+===============================================================+
+| orient   | One of "horizontal" or "vertical". Specifies the orientation  |
+|          | of the progress bar.                                          |
++----------+---------------------------------------------------------------+
+| length   | Specifies the length of the long axis of the progress bar     |
+|          | (width if horizontal, height if vertical).                    |
++----------+---------------------------------------------------------------+
+| mode     | One of "determinate" or "indeterminate".                      |
++----------+---------------------------------------------------------------+
+| maximum  | A number specifying the maximum value. Defaults to 100.       |
++----------+---------------------------------------------------------------+
+| value    | The current value of the progress bar. In "determinate" mode, |
+|          | this represents the amount of work completed. In              |
+|          | "indeterminate" mode, it is interpreted as modulo *maximum*;  |
+|          | that is, the progress bar completes one "cycle" when its value|
+|          | increases by *maximum*.                                       |
++----------+---------------------------------------------------------------+
+| variable | A name which is linked to the option value. If specified, the |
+|          | value of the progress bar is automatically set to the value of|
+|          | this name whenever the latter is modified.                    |
++----------+---------------------------------------------------------------+
+| phase    | Read-only option. The widget periodically increments the value|
+|          | of this option whenever its value is greater than 0 and, in   |
+|          | determinate mode, less than maximum. This option may be used  |
+|          | by the current theme to provide additional animation effects. |
++----------+---------------------------------------------------------------+
 
 
 ttk.Progressbar
@@ -734,14 +734,14 @@ Options
 
 This widget accepts the following specific option:
 
-   .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
-   +--------+----------------------------------------------------------------+
-   | Option | Description                                                    |
-   +========+================================================================+
-   | orient | One of "horizontal" or "vertical". Specifies the orientation of|
-   |        | the separator.                                                 |
-   +--------+----------------------------------------------------------------+
++--------+----------------------------------------------------------------+
+| Option | Description                                                    |
++========+================================================================+
+| orient | One of "horizontal" or "vertical". Specifies the orientation of|
+|        | the separator.                                                 |
++--------+----------------------------------------------------------------+
 
 
 Sizegrip
@@ -802,49 +802,49 @@ Options
 
 This widget accepts the following specific options:
 
-   .. tabularcolumns:: |l|p{0.7\linewidth}|
-
-   +----------------+--------------------------------------------------------+
-   | Option         | Description                                            |
-   +================+========================================================+
-   | columns        | A list of column identifiers, specifying the number of |
-   |                | columns and their names.                               |
-   +----------------+--------------------------------------------------------+
-   | displaycolumns | A list of column identifiers (either symbolic or       |
-   |                | integer indices) specifying which data columns are     |
-   |                | displayed and the order in which they appear, or the   |
-   |                | string "#all".                                         |
-   +----------------+--------------------------------------------------------+
-   | height         | Specifies the number of rows which should be visible.  |
-   |                | Note: the requested width is determined from the sum   |
-   |                | of the column widths.                                  |
-   +----------------+--------------------------------------------------------+
-   | padding        | Specifies the internal padding for the widget. The     |
-   |                | padding is a list of up to four length specifications. |
-   +----------------+--------------------------------------------------------+
-   | selectmode     | Controls how the built-in class bindings manage the    |
-   |                | selection. One of "extended", "browse" or "none".      |
-   |                | If set to "extended" (the default), multiple items may |
-   |                | be selected. If "browse", only a single item will be   |
-   |                | selected at a time. If "none", the selection will not  |
-   |                | be changed.                                            |
-   |                |                                                        |
-   |                | Note that the application code and tag bindings can set|
-   |                | the selection however they wish, regardless of the     |
-   |                | value  of this option.                                 |
-   +----------------+--------------------------------------------------------+
-   | show           | A list containing zero or more of the following values,|
-   |                | specifying which elements of the tree to display.      |
-   |                |                                                        |
-   |                | * tree: display tree labels in column #0.              |
-   |                | * headings: display the heading row.                   |
-   |                |                                                        |
-   |                | The default is "tree headings", i.e., show all         |
-   |                | elements.                                              |
-   |                |                                                        |
-   |                | **Note**: Column #0 always refers to the tree column,  |
-   |                | even if show="tree" is not specified.                  |
-   +----------------+--------------------------------------------------------+
+.. tabularcolumns:: |l|p{0.7\linewidth}|
+
++----------------+--------------------------------------------------------+
+| Option         | Description                                            |
++================+========================================================+
+| columns        | A list of column identifiers, specifying the number of |
+|                | columns and their names.                               |
++----------------+--------------------------------------------------------+
+| displaycolumns | A list of column identifiers (either symbolic or       |
+|                | integer indices) specifying which data columns are     |
+|                | displayed and the order in which they appear, or the   |
+|                | string "#all".                                         |
++----------------+--------------------------------------------------------+
+| height         | Specifies the number of rows which should be visible.  |
+|                | Note: the requested width is determined from the sum   |
+|                | of the column widths.                                  |
++----------------+--------------------------------------------------------+
+| padding        | Specifies the internal padding for the widget. The     |
+|                | padding is a list of up to four length specifications. |
++----------------+--------------------------------------------------------+
+| selectmode     | Controls how the built-in class bindings manage the    |
+|                | selection. One of "extended", "browse" or "none".      |
+|                | If set to "extended" (the default), multiple items may |
+|                | be selected. If "browse", only a single item will be   |
+|                | selected at a time. If "none", the selection will not  |
+|                | be changed.                                            |
+|                |                                                        |
+|                | Note that the application code and tag bindings can set|
+|                | the selection however they wish, regardless of the     |
+|                | value  of this option.                                 |
++----------------+--------------------------------------------------------+
+| show           | A list containing zero or more of the following values,|
+|                | specifying which elements of the tree to display.      |
+|                |                                                        |
+|                | * tree: display tree labels in column #0.              |
+|                | * headings: display the heading row.                   |
+|                |                                                        |
+|                | The default is "tree headings", i.e., show all         |
+|                | elements.                                              |
+|                |                                                        |
+|                | **Note**: Column #0 always refers to the tree column,  |
+|                | even if show="tree" is not specified.                  |
++----------------+--------------------------------------------------------+
 
 
 Item Options
@@ -853,27 +853,27 @@ Item Options
 The following item options may be specified for items in the insert and item
 widget commands.
 
-   .. tabularcolumns:: |l|L|
-
-   +--------+---------------------------------------------------------------+
-   | Option | Description                                                   |
-   +========+===============================================================+
-   | text   | The textual label to display for the item.                    |
-   +--------+---------------------------------------------------------------+
-   | image  | A Tk Image, displayed to the left of the label.               |
-   +--------+---------------------------------------------------------------+
-   | values | The list of values associated with the item.                  |
-   |        |                                                               |
-   |        | Each item should have the same number of values as the widget |
-   |        | option columns. If there are fewer values than columns, the   |
-   |        | remaining values are assumed empty. If there are more values  |
-   |        | than columns, the extra values are ignored.                   |
-   +--------+---------------------------------------------------------------+
-   | open   | ``True``/``False`` value indicating whether the item's        |
-   |        | children should be displayed or hidden.                       |
-   +--------+---------------------------------------------------------------+
-   | tags   | A list of tags associated with this item.                     |
-   +--------+---------------------------------------------------------------+
+.. tabularcolumns:: |l|L|
+
++--------+---------------------------------------------------------------+
+| Option | Description                                                   |
++========+===============================================================+
+| text   | The textual label to display for the item.                    |
++--------+---------------------------------------------------------------+
+| image  | A Tk Image, displayed to the left of the label.               |
++--------+---------------------------------------------------------------+
+| values | The list of values associated with the item.                  |
+|        |                                                               |
+|        | Each item should have the same number of values as the widget |
+|        | option columns. If there are fewer values than columns, the   |
+|        | remaining values are assumed empty. If there are more values  |
+|        | than columns, the extra values are ignored.                   |
++--------+---------------------------------------------------------------+
+| open   | ``True``/``False`` value indicating whether the item's        |
+|        | children should be displayed or hidden.                       |
++--------+---------------------------------------------------------------+
+| tags   | A list of tags associated with this item.                     |
++--------+---------------------------------------------------------------+
 
 
 Tag Options
@@ -881,20 +881,20 @@ Tag Options
 
 The following options may be specified on tags:
 
-   .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
-   +------------+-----------------------------------------------------------+
-   | Option     | Description                                               |
-   +============+===========================================================+
-   | foreground | Specifies the text foreground color.                      |
-   +------------+-----------------------------------------------------------+
-   | background | Specifies the cell or item background color.              |
-   +------------+-----------------------------------------------------------+
-   | font       | Specifies the font to use when drawing text.              |
-   +------------+-----------------------------------------------------------+
-   | image      | Specifies the item image, in case the item's image option |
-   |            | is empty.                                                 |
-   +------------+-----------------------------------------------------------+
++------------+-----------------------------------------------------------+
+| Option     | Description                                               |
++============+===========================================================+
+| foreground | Specifies the text foreground color.                      |
++------------+-----------------------------------------------------------+
+| background | Specifies the cell or item background color.              |
++------------+-----------------------------------------------------------+
+| font       | Specifies the font to use when drawing text.              |
++------------+-----------------------------------------------------------+
+| image      | Specifies the item image, in case the item's image option |
+|            | is empty.                                                 |
++------------+-----------------------------------------------------------+
 
 
 Column Identifiers
@@ -926,19 +926,19 @@ Virtual Events
 
 The Treeview widget generates the following virtual events.
 
-   .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
-   +--------------------+--------------------------------------------------+
-   | Event              | Description                                      |
-   +====================+==================================================+
-   | <<TreeviewSelect>> | Generated whenever the selection changes.        |
-   +--------------------+--------------------------------------------------+
-   | <<TreeviewOpen>>   | Generated just before settings the focus item to |
-   |                    | open=True.                                       |
-   +--------------------+--------------------------------------------------+
-   | <<TreeviewClose>>  | Generated just after setting the focus item to   |
-   |                    | open=False.                                      |
-   +--------------------+--------------------------------------------------+
++--------------------+--------------------------------------------------+
+| Event              | Description                                      |
++====================+==================================================+
+| <<TreeviewSelect>> | Generated whenever the selection changes.        |
++--------------------+--------------------------------------------------+
+| <<TreeviewOpen>>   | Generated just before settings the focus item to |
+|                    | open=True.                                       |
++--------------------+--------------------------------------------------+
+| <<TreeviewClose>>  | Generated just after setting the focus item to   |
+|                    | open=False.                                      |
++--------------------+--------------------------------------------------+
 
 The :meth:`Treeview.focus` and :meth:`Treeview.selection` methods can be used
 to determine the affected item or items.
@@ -986,19 +986,19 @@ ttk.Treeview
 
       The valid options/values are:
 
-      * id
+      id
          Returns the column name. This is a read-only option.
-      * anchor: One of the standard Tk anchor values.
+      anchor: One of the standard Tk anchor values.
          Specifies how the text in this column should be aligned with respect
          to the cell.
-      * minwidth: width
+      minwidth: width
          The minimum width of the column in pixels. The treeview widget will
          not make the column any smaller than specified by this option when
          the widget is resized or the user drags a column.
-      * stretch: ``True``/``False``
+      stretch: ``True``/``False``
          Specifies whether the column's width should be adjusted when
          the widget is resized.
-      * width: width
+      width: width
          The width of the column in pixels.
 
       To configure the tree column, call this with column = "#0"
@@ -1041,14 +1041,14 @@ ttk.Treeview
 
       The valid options/values are:
 
-      * text: text
+      text: text
          The text to display in the column heading.
-      * image: imageName
+      image: imageName
          Specifies an image to display to the right of the column heading.
-      * anchor: anchor
+      anchor: anchor
          Specifies how the heading text should be aligned. One of the standard
          Tk anchor values.
-      * command: callback
+      command: callback
          A callback to be invoked when the heading label is pressed.
 
       To configure the tree column heading, call this with column = "#0".
@@ -1391,32 +1391,42 @@ option. If you don't know the class name of a widget, use the method
    .. method:: element_create(elementname, etype, *args, **kw)
 
       Create a new element in the current theme, of the given *etype* which is
-      expected to be either "image", "from" or "vsapi". The latter is only
-      available in Tk 8.6a for Windows XP and Vista and is not described here.
+      expected to be either "image", "from" or "vsapi".
+      The latter is only available in Tk 8.6 on Windows.
 
       If "image" is used, *args* should contain the default image name followed
       by statespec/value pairs (this is the imagespec), and *kw* may have the
       following options:
 
-       * border=padding
-          padding is a list of up to four integers, specifying the left, top,
-          right, and bottom borders, respectively.
+      border=padding
+         padding is a list of up to four integers, specifying the left, top,
+         right, and bottom borders, respectively.
 
-       * height=height
-          Specifies a minimum height for the element. If less than zero, the
-          base image's height is used as a default.
+      height=height
+         Specifies a minimum height for the element. If less than zero, the
+         base image's height is used as a default.
 
-       * padding=padding
-          Specifies the element's interior padding. Defaults to border's value
-          if not specified.
+      padding=padding
+         Specifies the element's interior padding. Defaults to border's value
+         if not specified.
 
-       * sticky=spec
-          Specifies how the image is placed within the final parcel. spec
-          contains zero or more characters "n", "s", "w", or "e".
+      sticky=spec
+         Specifies how the image is placed within the final parcel. spec
+         contains zero or more characters "n", "s", "w", or "e".
 
-       * width=width
-          Specifies a minimum width for the element. If less than zero, the
-          base image's width is used as a default.
+      width=width
+         Specifies a minimum width for the element. If less than zero, the
+         base image's width is used as a default.
+
+      Example::
+
+         img1 = tkinter.PhotoImage(master=root, file='button.png')
+         img1 = tkinter.PhotoImage(master=root, file='button-pressed.png')
+         img1 = tkinter.PhotoImage(master=root, file='button-active.png')
+         style = ttk.Style(root)
+         style.element_create('Button.button', 'image',
+                              img1, ('pressed', img2), ('active', img3),
+                              border=(2, 4), sticky='we')
 
       If "from" is used as the value of *etype*,
       :meth:`element_create` will clone an existing
@@ -1425,6 +1435,68 @@ option. If you don't know the class name of a widget, use the method
       If this element to clone from is not specified, an empty element will
       be used. *kw* is discarded.
 
+      Example::
+
+         style = ttk.Style(root)
+         style.element_create('plain.background', 'from', 'default')
+
+      If "vsapi" is used as the value of *etype*, :meth:`element_create`
+      will create a new element in the current theme whose visual appearance
+      is drawn using the Microsoft Visual Styles API which is responsible
+      for the themed styles on Windows XP and Vista.
+      *args* is expected to contain the Visual Styles class and part as
+      given in the Microsoft documentation followed by an optional sequence
+      of tuples of ttk states and the corresponding Visual Styles API state
+      value.
+      *kw* may have the following options:
+
+      padding=padding
+         Specify the element's interior padding.
+         *padding* is a list of up to four integers specifying the left,
+         top, right and bottom padding quantities respectively.
+         If fewer than four elements are specified, bottom defaults to top,
+         right defaults to left, and top defaults to left.
+         In other words, a list of three numbers specify the left, vertical,
+         and right padding; a list of two numbers specify the horizontal
+         and the vertical padding; a single number specifies the same
+         padding all the way around the widget.
+         This option may not be mixed with any other options.
+
+      margins=padding
+         Specifies the elements exterior padding.
+         *padding* is a list of up to four integers specifying the left, top,
+         right and bottom padding quantities respectively.
+         This option may not be mixed with any other options.
+
+      width=width
+         Specifies the width for the element.
+         If this option is set then the Visual Styles API will not be queried
+         for the recommended size or the part.
+         If this option is set then *height* should also be set.
+         The *width* and *height* options cannot be mixed with the *padding*
+         or *margins* options.
+
+      height=height
+         Specifies the height of the element.
+         See the comments for *width*.
+
+      Example::
+
+         style = ttk.Style(root)
+         style.element_create('pin', 'vsapi', 'EXPLORERBAR', 3, [
+                              ('pressed', '!selected', 3),
+                              ('active', '!selected', 2),
+                              ('pressed', 'selected', 6),
+                              ('active', 'selected', 5),
+                              ('selected', 4),
+                              ('', 1)])
+         style.layout('Explorer.Pin',
+                      [('Explorer.Pin.pin', {'sticky': 'news'})])
+         pin = ttk.Checkbutton(style='Explorer.Pin')
+         pin.pack(expand=True, fill='both')
+
+      .. versionchanged:: 3.13
+         Added support of the "vsapi" element factory.
 
    .. method:: element_names()
 
@@ -1504,22 +1576,22 @@ uses a simplified version of the pack geometry manager: given an
 initial cavity, each element is allocated a parcel. Valid
 options/values are:
 
- * side: whichside
-    Specifies which side of the cavity to place the element; one of
-    top, right, bottom or left. If omitted, the element occupies the
-    entire cavity.
+side: whichside
+   Specifies which side of the cavity to place the element; one of
+   top, right, bottom or left. If omitted, the element occupies the
+   entire cavity.
 
- * sticky: nswe
-    Specifies where the element is placed inside its allocated parcel.
+sticky: nswe
+   Specifies where the element is placed inside its allocated parcel.
 
- * unit: 0 or 1
-    If set to 1, causes the element and all of its descendants to be treated as
-    a single element for the purposes of :meth:`Widget.identify` et al. It's
-    used for things like scrollbar thumbs with grips.
+unit: 0 or 1
+   If set to 1, causes the element and all of its descendants to be treated as
+   a single element for the purposes of :meth:`Widget.identify` et al. It's
+   used for things like scrollbar thumbs with grips.
 
- * children: [sublayout... ]
-    Specifies a list of elements to place inside the element. Each
-    element is a tuple (or other sequence type) where the first item is
-    the layout name, and the other is a `Layout`_.
+children: [sublayout... ]
+   Specifies a list of elements to place inside the element. Each
+   element is a tuple (or other sequence type) where the first item is
+   the layout name, and the other is a `Layout`_.
 
 .. _Layout: `Layouts`_
diff --git a/Doc/library/token-list.inc b/Doc/library/token-list.inc
index 3b345099bf54b5..39df2927a0b7f2 100644
--- a/Doc/library/token-list.inc
+++ b/Doc/library/token-list.inc
@@ -207,10 +207,6 @@
 
 .. data:: OP
 
-.. data:: AWAIT
-
-.. data:: ASYNC
-
 .. data:: TYPE_IGNORE
 
 .. data:: TYPE_COMMENT
@@ -223,6 +219,10 @@
 
 .. data:: FSTRING_END
 
+.. data:: COMMENT
+
+.. data:: NL
+
 .. data:: ERRORTOKEN
 
 .. data:: N_TOKENS
diff --git a/Doc/library/token.rst b/Doc/library/token.rst
index a1aceba96ce030..e6dc37d7ad852c 100644
--- a/Doc/library/token.rst
+++ b/Doc/library/token.rst
@@ -50,11 +50,13 @@ The following token type values aren't used by the C tokenizer but are needed fo
 the :mod:`tokenize` module.
 
 .. data:: COMMENT
+   :noindex:
 
    Token value used to indicate a comment.
 
 
 .. data:: NL
+   :noindex:
 
    Token value used to indicate a non-terminating newline.  The
    :data:`NEWLINE` token indicates the end of a logical line of Python code;
@@ -78,17 +80,21 @@ the :mod:`tokenize` module.
 
 
 .. versionchanged:: 3.5
-   Added :data:`AWAIT` and :data:`ASYNC` tokens.
+   Added :data:`!AWAIT` and :data:`!ASYNC` tokens.
 
 .. versionchanged:: 3.7
    Added :data:`COMMENT`, :data:`NL` and :data:`ENCODING` tokens.
 
 .. versionchanged:: 3.7
-   Removed :data:`AWAIT` and :data:`ASYNC` tokens. "async" and "await" are
+   Removed :data:`!AWAIT` and :data:`!ASYNC` tokens. "async" and "await" are
    now tokenized as :data:`NAME` tokens.
 
 .. versionchanged:: 3.8
    Added :data:`TYPE_COMMENT`, :data:`TYPE_IGNORE`, :data:`COLONEQUAL`.
-   Added :data:`AWAIT` and :data:`ASYNC` tokens back (they're needed
+   Added :data:`!AWAIT` and :data:`!ASYNC` tokens back (they're needed
    to support parsing older Python versions for :func:`ast.parse` with
    ``feature_version`` set to 6 or lower).
+
+.. versionchanged:: 3.13
+   Removed :data:`!AWAIT` and :data:`!ASYNC` tokens again.
+
diff --git a/Doc/library/tokenize.rst b/Doc/library/tokenize.rst
index 11f569df2e7cde..92bdb052267a68 100644
--- a/Doc/library/tokenize.rst
+++ b/Doc/library/tokenize.rst
@@ -22,6 +22,15 @@ the generic :data:`~token.OP` token type.  The exact
 type can be determined by checking the ``exact_type`` property on the
 :term:`named tuple` returned from :func:`tokenize.tokenize`.
 
+
+.. warning::
+
+   Note that the functions in this module are only designed to parse
+   syntactically valid Python code (code that does not raise when parsed
+   using :func:`ast.parse`).  The behavior of the functions in this module is
+   **undefined** when providing invalid Python code and it can change at any
+   point.
+
 Tokenizing Input
 ----------------
 
@@ -139,11 +148,6 @@ function it uses to do this is available:
        2,
        3
 
-Note that unclosed single-quoted strings do not cause an error to be
-raised. They are tokenized as :data:`~token.ERRORTOKEN`, followed by the
-tokenization of their contents.
-
-
 .. _tokenize-cli:
 
 Command-Line Usage
@@ -162,11 +166,11 @@ The following options are accepted:
 
 .. program:: tokenize
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    show this help message and exit
 
-.. cmdoption:: -e, --exact
+.. option:: -e, --exact
 
    display token names using the exact type
 
diff --git a/Doc/library/trace.rst b/Doc/library/trace.rst
index 40cf198f1287d7..8854905e192b45 100644
--- a/Doc/library/trace.rst
+++ b/Doc/library/trace.rst
@@ -34,11 +34,11 @@ all Python modules imported during the execution into the current directory.
 
 .. program:: trace
 
-.. cmdoption:: --help
+.. option:: --help
 
    Display usage and exit.
 
-.. cmdoption:: --version
+.. option:: --version
 
    Display the version of the module and exit.
 
@@ -56,28 +56,28 @@ the :option:`--trace <-t>` and :option:`--count <-c>` options. When
 
 .. program:: trace
 
-.. cmdoption:: -c, --count
+.. option:: -c, --count
 
    Produce a set of annotated listing files upon program completion that shows
    how many times each statement was executed.  See also
    :option:`--coverdir <-C>`, :option:`--file <-f>` and
    :option:`--no-report <-R>` below.
 
-.. cmdoption:: -t, --trace
+.. option:: -t, --trace
 
    Display lines as they are executed.
 
-.. cmdoption:: -l, --listfuncs
+.. option:: -l, --listfuncs
 
    Display the functions executed by running the program.
 
-.. cmdoption:: -r, --report
+.. option:: -r, --report
 
    Produce an annotated list from an earlier program run that used the
    :option:`--count <-c>` and :option:`--file <-f>` option.  This does not
    execute any code.
 
-.. cmdoption:: -T, --trackcalls
+.. option:: -T, --trackcalls
 
    Display the calling relationships exposed by running the program.
 
@@ -86,33 +86,33 @@ Modifiers
 
 .. program:: trace
 
-.. cmdoption:: -f, --file=<file>
+.. option:: -f, --file=<file>
 
    Name of a file to accumulate counts over several tracing runs.  Should be
    used with the :option:`--count <-c>` option.
 
-.. cmdoption:: -C, --coverdir=<dir>
+.. option:: -C, --coverdir=<dir>
 
    Directory where the report files go.  The coverage report for
    ``package.module`` is written to file :file:`{dir}/{package}/{module}.cover`.
 
-.. cmdoption:: -m, --missing
+.. option:: -m, --missing
 
    When generating annotated listings, mark lines which were not executed with
    ``>>>>>>``.
 
-.. cmdoption:: -s, --summary
+.. option:: -s, --summary
 
    When using :option:`--count <-c>` or :option:`--report <-r>`, write a brief
    summary to stdout for each file processed.
 
-.. cmdoption:: -R, --no-report
+.. option:: -R, --no-report
 
    Do not generate annotated listings.  This is useful if you intend to make
    several runs with :option:`--count <-c>`, and then produce a single set of
    annotated listings at the end.
 
-.. cmdoption:: -g, --timing
+.. option:: -g, --timing
 
    Prefix each line with the time since the program started.  Only used while
    tracing.
@@ -124,12 +124,12 @@ These options may be repeated multiple times.
 
 .. program:: trace
 
-.. cmdoption:: --ignore-module=<mod>
+.. option:: --ignore-module=<mod>
 
    Ignore each of the given module names and its submodules (if it is a
    package).  The argument can be a list of names separated by a comma.
 
-.. cmdoption:: --ignore-dir=<dir>
+.. option:: --ignore-dir=<dir>
 
    Ignore all modules and packages in the named directory and subdirectories.
    The argument can be a list of directories separated by :data:`os.pathsep`.
@@ -187,7 +187,8 @@ Programmatic Interface
 
       Merge in data from another :class:`CoverageResults` object.
 
-   .. method:: write_results(show_missing=True, summary=False, coverdir=None)
+   .. method:: write_results(show_missing=True, summary=False, coverdir=None,\
+                             *, ignore_missing_files=False)
 
       Write coverage results.  Set *show_missing* to show lines that had no
       hits.  Set *summary* to include in the output the coverage summary per
@@ -195,6 +196,13 @@ Programmatic Interface
       result files will be output.  If ``None``, the results for each source
       file are placed in its directory.
 
+      If *ignore_missing_files* is ``True``, coverage counts for files that no
+      longer exist are silently ignored. Otherwise, a missing file will
+      raise a :exc:`FileNotFoundError`.
+
+      .. versionchanged:: 3.13
+         Added *ignore_missing_files* parameter.
+
 A simple example demonstrating the use of the programmatic interface::
 
    import sys
diff --git a/Doc/library/traceback.rst b/Doc/library/traceback.rst
index 5c0e261b90763c..2d5ea19b2cb892 100644
--- a/Doc/library/traceback.rst
+++ b/Doc/library/traceback.rst
@@ -86,10 +86,9 @@ The module defines the following functions:
 
 .. function:: print_last(limit=None, file=None, chain=True)
 
-   This is a shorthand for ``print_exception(sys.last_type, sys.last_value,
-   sys.last_traceback, limit, file, chain)``.  In general it will work only
-   after an exception has reached an interactive prompt (see
-   :data:`sys.last_type`).
+   This is a shorthand for ``print_exception(sys.last_exc, limit, file,
+   chain)``.  In general it will work only after an exception has reached
+   an interactive prompt (see :data:`sys.last_exc`).
 
 
 .. function:: print_stack(f=None, limit=None, file=None)
@@ -136,24 +135,34 @@ The module defines the following functions:
    text line is not ``None``.
 
 
-.. function:: format_exception_only(exc, /[, value])
+.. function:: format_exception_only(exc, /[, value], *, show_group=False)
 
    Format the exception part of a traceback using an exception value such as
    given by ``sys.last_value``.  The return value is a list of strings, each
-   ending in a newline.  Normally, the list contains a single string; however,
-   for :exc:`SyntaxError` exceptions, it contains several lines that (when
-   printed) display detailed information about where the syntax error occurred.
-   The message indicating which exception occurred is the always last string in
-   the list.
+   ending in a newline.  The list contains the exception's message, which is
+   normally a single string; however, for :exc:`SyntaxError` exceptions, it
+   contains several lines that (when printed) display detailed information
+   about where the syntax error occurred. Following the message, the list
+   contains the exception's :attr:`notes <BaseException.__notes__>`.
 
    Since Python 3.10, instead of passing *value*, an exception object
    can be passed as the first argument.  If *value* is provided, the first
    argument is ignored in order to provide backwards compatibility.
 
+   When *show_group* is ``True``, and the exception is an instance of
+   :exc:`BaseExceptionGroup`, the nested exceptions are included as
+   well, recursively, with indentation relative to their nesting depth.
+
    .. versionchanged:: 3.10
       The *etype* parameter has been renamed to *exc* and is now
       positional-only.
 
+   .. versionchanged:: 3.11
+      The returned list now includes any notes attached to the exception.
+
+   .. versionchanged:: 3.13
+      *show_group* parameter was added.
+
 
 .. function:: format_exception(exc, /[, value, tb], limit=None, chain=True)
 
@@ -218,7 +227,7 @@ The module also defines the following classes:
 :class:`TracebackException` objects are created from actual exceptions to
 capture data for later printing in a lightweight fashion.
 
-.. class:: TracebackException(exc_type, exc_value, exc_traceback, *, limit=None, lookup_lines=True, capture_locals=False, compact=False)
+.. class:: TracebackException(exc_type, exc_value, exc_traceback, *, limit=None, lookup_lines=True, capture_locals=False, compact=False, max_group_width=15, max_group_depth=10)
 
    Capture an exception for later rendering. *limit*, *lookup_lines* and
    *capture_locals* are as for the :class:`StackSummary` class.
@@ -230,6 +239,18 @@ capture data for later printing in a lightweight fashion.
 
    Note that when locals are captured, they are also shown in the traceback.
 
+   *max_group_width* and *max_group_depth* control the formatting of exception
+   groups (see :exc:`BaseExceptionGroup`). The depth refers to the nesting
+   level of the group, and the width refers to the size of a single exception
+   group's exceptions array. The formatted output is truncated when either
+   limit is exceeded.
+
+   .. versionchanged:: 3.10
+      Added the *compact* parameter.
+
+   .. versionchanged:: 3.11
+      Added the *max_group_width* and *max_group_depth* parameters.
+
    .. attribute:: __cause__
 
       A :class:`TracebackException` of the original ``__cause__``.
@@ -238,6 +259,14 @@ capture data for later printing in a lightweight fashion.
 
       A :class:`TracebackException` of the original ``__context__``.
 
+   .. attribute:: exceptions
+
+      If ``self`` represents an :exc:`ExceptionGroup`, this field holds a list of
+      :class:`TracebackException` instances representing the nested exceptions.
+      Otherwise it is ``None``.
+
+      .. versionadded:: 3.11
+
    .. attribute:: __suppress_context__
 
       The ``__suppress_context__`` value from the original exception.
@@ -258,6 +287,14 @@ capture data for later printing in a lightweight fashion.
 
       The class of the original traceback.
 
+      .. deprecated:: 3.13
+
+   .. attribute:: exc_type_str
+
+      String display of the class of the original exception.
+
+      .. versionadded:: 3.13
+
    .. attribute:: filename
 
       For syntax errors - the file name where the error occurred.
@@ -266,6 +303,13 @@ capture data for later printing in a lightweight fashion.
 
       For syntax errors - the line number where the error occurred.
 
+   .. attribute:: end_lineno
+
+      For syntax errors - the end line number where the error occurred.
+      Can be ``None`` if not present.
+
+      .. versionadded:: 3.10
+
    .. attribute:: text
 
       For syntax errors - the text where the error occurred.
@@ -274,6 +318,13 @@ capture data for later printing in a lightweight fashion.
 
       For syntax errors - the offset into the text where the error occurred.
 
+   .. attribute:: end_offset
+
+      For syntax errors - the end offset into the text where the error occurred.
+      Can be ``None`` if not present.
+
+      .. versionadded:: 3.10
+
    .. attribute:: msg
 
       For syntax errors - the compiler error message.
@@ -303,25 +354,27 @@ capture data for later printing in a lightweight fashion.
       some containing internal newlines. :func:`~traceback.print_exception`
       is a wrapper around this method which just prints the lines to a file.
 
-      The message indicating which exception occurred is always the last
-      string in the output.
-
-   .. method::  format_exception_only()
+   .. method::  format_exception_only(*, show_group=False)
 
       Format the exception part of the traceback.
 
       The return value is a generator of strings, each ending in a newline.
 
-      Normally, the generator emits a single string; however, for
-      :exc:`SyntaxError` exceptions, it emits several lines that (when
-      printed) display detailed information about where the syntax
-      error occurred.
+      When *show_group* is ``False``, the generator emits the exception's
+      message followed by its notes (if it has any). The exception message
+      is normally a single string; however, for :exc:`SyntaxError` exceptions,
+      it consists of several lines that (when printed) display detailed
+      information about where the syntax error occurred.
 
-      The message indicating which exception occurred is always the last
-      string in the output.
+      When *show_group* is ``True``, and the exception is an instance of
+      :exc:`BaseExceptionGroup`, the nested exceptions are included as
+      well, recursively, with indentation relative to their nesting depth.
 
-   .. versionchanged:: 3.10
-      Added the *compact* parameter.
+      .. versionchanged:: 3.11
+         The exception's notes are now included in the output.
+
+      .. versionchanged:: 3.13
+         Added the *show_group* parameter.
 
 
 :class:`StackSummary` Objects
@@ -470,27 +523,32 @@ The output for the example would look similar to this:
    *** print_tb:
      File "<doctest...>", line 10, in <module>
        lumberjack()
+       ~~~~~~~~~~^^
    *** print_exception:
    Traceback (most recent call last):
      File "<doctest...>", line 10, in <module>
        lumberjack()
+       ~~~~~~~~~~^^
      File "<doctest...>", line 4, in lumberjack
        bright_side_of_life()
+       ~~~~~~~~~~~~~~~~~~~^^
    IndexError: tuple index out of range
    *** print_exc:
    Traceback (most recent call last):
      File "<doctest...>", line 10, in <module>
        lumberjack()
+       ~~~~~~~~~~^^
      File "<doctest...>", line 4, in lumberjack
        bright_side_of_life()
+       ~~~~~~~~~~~~~~~~~~~^^
    IndexError: tuple index out of range
    *** format_exc, first and last line:
    Traceback (most recent call last):
    IndexError: tuple index out of range
    *** format_exception:
    ['Traceback (most recent call last):\n',
-    '  File "<doctest default[0]>", line 10, in <module>\n    lumberjack()\n',
-    '  File "<doctest default[0]>", line 4, in lumberjack\n    bright_side_of_life()\n',
+    '  File "<doctest default[0]>", line 10, in <module>\n    lumberjack()\n    ~~~~~~~~~~^^\n',
+    '  File "<doctest default[0]>", line 4, in lumberjack\n    bright_side_of_life()\n    ~~~~~~~~~~~~~~~~~~~^^\n',
     '  File "<doctest default[0]>", line 7, in bright_side_of_life\n    return tuple()[0]\n           ~~~~~~~^^^\n',
     'IndexError: tuple index out of range\n']
    *** extract_tb:
@@ -498,8 +556,8 @@ The output for the example would look similar to this:
     <FrameSummary file <doctest...>, line 4 in lumberjack>,
     <FrameSummary file <doctest...>, line 7 in bright_side_of_life>]
    *** format_tb:
-   ['  File "<doctest default[0]>", line 10, in <module>\n    lumberjack()\n',
-    '  File "<doctest default[0]>", line 4, in lumberjack\n    bright_side_of_life()\n',
+   ['  File "<doctest default[0]>", line 10, in <module>\n    lumberjack()\n    ~~~~~~~~~~^^\n',
+    '  File "<doctest default[0]>", line 4, in lumberjack\n    bright_side_of_life()\n    ~~~~~~~~~~~~~~~~~~~^^\n',
     '  File "<doctest default[0]>", line 7, in bright_side_of_life\n    return tuple()[0]\n           ~~~~~~~^^^\n']
    *** tb_lineno: 10
 
diff --git a/Doc/library/tty.rst b/Doc/library/tty.rst
index b30bc3c7ac42e9..20ba7d7e0a45b3 100644
--- a/Doc/library/tty.rst
+++ b/Doc/library/tty.rst
@@ -15,23 +15,49 @@
 The :mod:`tty` module defines functions for putting the tty into cbreak and raw
 modes.
 
+.. availability:: Unix.
+
 Because it requires the :mod:`termios` module, it will work only on Unix.
 
 The :mod:`tty` module defines the following functions:
 
 
+.. function:: cfmakeraw(mode)
+
+   Convert the tty attribute list *mode*, which is a list like the one returned
+   by :func:`termios.tcgetattr`, to that of a tty in raw mode.
+
+   .. versionadded:: 3.12
+
+
+.. function:: cfmakecbreak(mode)
+
+   Convert the tty attribute list *mode*, which is a list like the one returned
+   by :func:`termios.tcgetattr`, to that of a tty in cbreak mode.
+
+   .. versionadded:: 3.12
+
+
 .. function:: setraw(fd, when=termios.TCSAFLUSH)
 
    Change the mode of the file descriptor *fd* to raw. If *when* is omitted, it
    defaults to :const:`termios.TCSAFLUSH`, and is passed to
-   :func:`termios.tcsetattr`.
+   :func:`termios.tcsetattr`. The return value of :func:`termios.tcgetattr`
+   is saved before setting *fd* to raw mode; this value is returned.
+
+   .. versionchanged:: 3.12
+      The return value is now the original tty attributes, instead of None.
 
 
 .. function:: setcbreak(fd, when=termios.TCSAFLUSH)
 
    Change the mode of file descriptor *fd* to cbreak. If *when* is omitted, it
    defaults to :const:`termios.TCSAFLUSH`, and is passed to
-   :func:`termios.tcsetattr`.
+   :func:`termios.tcsetattr`. The return value of :func:`termios.tcgetattr`
+   is saved before setting *fd* to cbreak mode; this value is returned.
+
+   .. versionchanged:: 3.12
+      The return value is now the original tty attributes, instead of None.
 
 
 .. seealso::
diff --git a/Doc/library/turtle.rst b/Doc/library/turtle.rst
index 10138f4f406f85..88b1f09eb3c8b7 100644
--- a/Doc/library/turtle.rst
+++ b/Doc/library/turtle.rst
@@ -19,9 +19,14 @@
 Introduction
 ============
 
-Turtle graphics is a popular way for introducing programming to kids.  It was
-part of the original Logo programming language developed by Wally Feurzeig,
-Seymour Papert and Cynthia Solomon in 1967.
+Turtle graphics is an implementation of `the popular geometric drawing tools
+introduced in Logo <https://en.wikipedia.org/wiki/Turtle_
+(robot)>`_, developed by Wally Feurzeig, Seymour Papert and Cynthia Solomon
+in 1967.
+
+
+Get started
+===========
 
 Imagine a robotic turtle starting at (0, 0) in the x-y plane.  After an ``import turtle``, give it the
 command ``turtle.forward(15)``, and it moves (on-screen!) 15 pixels in the
@@ -36,67 +41,261 @@ direction it is facing, drawing a line as it moves.  Give it the command
    .. image:: turtle-star.*
       :align: center
 
-   .. literalinclude:: ../includes/turtle-star.py
+In Python, turtle graphics provides a representation of a physical "turtle"
+(a little robot with a pen) that draws on a sheet of paper on the floor.
+
+It's an effective and well-proven way for learners to encounter
+programming concepts and interaction with software, as it provides instant,
+visible feedback. It also provides convenient access to graphical output
+in general.
+
+Turtle drawing was originally created as an educational tool, to be used by
+teachers in the classroom. For the programmer who needs to produce some
+graphical output it can be a way to do that without the overhead of
+introducing more complex or external libraries into their work.
+
+
+.. _turtle-tutorial:
+
+Tutorial
+========
+
+New users should start here. In this tutorial we'll explore some of the
+basics of turtle drawing.
+
+
+Starting a turtle environment
+-----------------------------
+
+In a Python shell, import all the objects of the ``turtle`` module::
+
+    from turtle import *
+
+If you run into a ``No module named '_tkinter'`` error, you'll have to
+install the :mod:`Tk interface package <tkinter>` on your system.
+
+
+Basic drawing
+-------------
+
+Send the turtle forward 100 steps::
+
+   forward(100)
+
+You should see (most likely, in a new window on your display) a line
+drawn by the turtle, heading East. Change the direction of the turtle,
+so that it turns 120 degrees left (anti-clockwise)::
+
+   left(120)
+
+Let's continue by drawing a triangle::
+
+   forward(100)
+   left(120)
+   forward(100)
+
+Notice how the turtle, represented by an arrow, points in different
+directions as you steer it.
+
+Experiment with those commands, and also with ``backward()`` and
+``right()``.
+
+
+Pen control
+~~~~~~~~~~~
+
+Try changing the color - for example, ``color('blue')`` - and
+width of the line - for example, ``width(3)`` - and then drawing again.
+
+You can also move the turtle around without drawing, by lifting up the pen:
+``up()`` before moving. To start drawing again, use ``down()``.
+
+
+The turtle's position
+~~~~~~~~~~~~~~~~~~~~~
 
-By combining together these and similar commands, intricate shapes and pictures
-can easily be drawn.
+Send your turtle back to its starting-point (useful if it has disappeared
+off-screen)::
 
-The :mod:`turtle` module is an extended reimplementation of the same-named
-module from the Python standard distribution up to version Python 2.5.
+   home()
 
-It tries to keep the merits of the old turtle module and to be (nearly) 100%
-compatible with it.  This means in the first place to enable the learning
-programmer to use all the commands, classes and methods interactively when using
-the module from within IDLE run with the ``-n`` switch.
+The home position is at the center of the turtle's screen. If you ever need to
+know them, get the turtle's x-y co-ordinates with::
 
-The turtle module provides turtle graphics primitives, in both object-oriented
-and procedure-oriented ways.  Because it uses :mod:`tkinter` for the underlying
-graphics, it needs a version of Python installed with Tk support.
+    pos()
 
-The object-oriented interface uses essentially two+two classes:
+Home is at ``(0, 0)``.
 
-1. The :class:`TurtleScreen` class defines graphics windows as a playground for
-   the drawing turtles.  Its constructor needs a :class:`tkinter.Canvas` or a
-   :class:`ScrolledCanvas` as argument.  It should be used when :mod:`turtle` is
-   used as part of some application.
+And after a while, it will probably help to clear the window so we can start
+anew::
 
-   The function :func:`Screen` returns a singleton object of a
-   :class:`TurtleScreen` subclass. This function should be used when
-   :mod:`turtle` is used as a standalone tool for doing graphics.
-   As a singleton object, inheriting from its class is not possible.
+   clearscreen()
+
+
+Making algorithmic patterns
+---------------------------
+
+Using loops, it's possible to build up geometric patterns::
+
+    for steps in range(100):
+        for c in ('blue', 'red', 'green'):
+            color(c)
+            forward(steps)
+            right(30)
+
+
+\ - which of course, are limited only by the imagination!
+
+Let's draw the star shape at the top of this page. We want red lines,
+filled in with yellow::
+
+    color('red')
+    fillcolor('yellow')
+
+Just as ``up()`` and ``down()`` determine whether lines will be drawn,
+filling can be turned on and off::
+
+    begin_fill()
+
+Next we'll create a loop::
+
+    while True:
+        forward(200)
+        left(170)
+        if abs(pos()) < 1:
+            break
+
+``abs(pos()) < 1`` is a good way to know when the turtle is back at its
+home position.
+
+Finally, complete the filling::
+
+    end_fill()
+
+(Note that filling only actually takes place when you give the
+``end_fill()`` command.)
+
+
+.. _turtle-how-to:
+
+How to...
+=========
+
+This section covers some typical turtle use-cases and approaches.
+
+
+Get started as quickly as possible
+----------------------------------
+
+One of the joys of turtle graphics is the immediate, visual feedback that's
+available from simple commands - it's an excellent way to introduce children
+to programming ideas, with a minimum of overhead (not just children, of
+course).
+
+The turtle module makes this possible by exposing all its basic functionality
+as functions, available with ``from turtle import *``. The :ref:`turtle
+graphics tutorial <turtle-tutorial>` covers this approach.
+
+It's worth noting that many of the turtle commands also have even more terse
+equivalents, such as ``fd()`` for :func:`forward`. These are especially
+useful when working with learners for whom typing is not a skill.
+
+.. _note:
+
+    You'll need to have the :mod:`Tk interface package <tkinter>` installed on
+    your system for turtle graphics to work. Be warned that this is not
+    always straightforward, so check this in advance if you're planning to
+    use turtle graphics with a learner.
+
+
+Use the ``turtle`` module namespace
+-----------------------------------
 
-   All methods of TurtleScreen/Screen also exist as functions, i.e. as part of
-   the procedure-oriented interface.
+Using ``from turtle import *`` is convenient - but be warned that it imports a
+rather large collection of objects, and if you're doing anything but turtle
+graphics you run the risk of a name conflict (this becomes even more an issue
+if you're using turtle graphics in a script where other modules might be
+imported).
 
-2. :class:`RawTurtle` (alias: :class:`RawPen`) defines Turtle objects which draw
-   on a :class:`TurtleScreen`.  Its constructor needs a Canvas, ScrolledCanvas
-   or TurtleScreen as argument, so the RawTurtle objects know where to draw.
+The solution is to use ``import turtle`` - ``fd()`` becomes
+``turtle.fd()``, ``width()`` becomes ``turtle.width()`` and so on. (If typing
+"turtle" over and over again becomes tedious, use for example ``import turtle
+as t`` instead.)
 
-   Derived from RawTurtle is the subclass :class:`Turtle` (alias: :class:`Pen`),
-   which draws on "the" :class:`Screen` instance which is automatically
-   created, if not already present.
 
-   All methods of RawTurtle/Turtle also exist as functions, i.e. part of the
-   procedure-oriented interface.
+Use turtle graphics in a script
+-------------------------------
 
-The procedural interface provides functions which are derived from the methods
-of the classes :class:`Screen` and :class:`Turtle`.  They have the same names as
-the corresponding methods.  A screen object is automatically created whenever a
-function derived from a Screen method is called.  An (unnamed) turtle object is
-automatically created whenever any of the functions derived from a Turtle method
-is called.
+It's recommended to use the ``turtle`` module namespace as described
+immediately above, for example::
 
-To use multiple turtles on a screen one has to use the object-oriented interface.
+    import turtle as t
+    from random import random
+
+    for i in range(100):
+        steps = int(random() * 100)
+        angle = int(random() * 360)
+        t.right(angle)
+        t.fd(steps)
+
+Another step is also required though - as soon as the script ends, Python
+will also close the turtle's window. Add::
+
+    t.mainloop()
+
+to the end of the script. The script will now wait to be dismissed and
+will not exit until it is terminated, for example by closing the turtle
+graphics window.
+
+
+Use object-oriented turtle graphics
+-----------------------------------
+
+.. seealso:: :ref:`Explanation of the object-oriented interface <turtle-explanation>`
+
+Other than for very basic introductory purposes, or for trying things out
+as quickly as possible, it's more usual and much more powerful to use the
+object-oriented approach to turtle graphics. For example, this allows
+multiple turtles on screen at once.
+
+In this approach, the various turtle commands are methods of objects (mostly of
+``Turtle`` objects). You *can* use the object-oriented approach in the shell,
+but it would be more typical in a Python script.
+
+The example above then becomes::
+
+    from turtle import Turtle
+    from random import random
+
+    t = Turtle()
+    for i in range(100):
+        steps = int(random() * 100)
+        angle = int(random() * 360)
+        t.right(angle)
+        t.fd(steps)
+
+    t.screen.mainloop()
+
+Note the last line. ``t.screen`` is an instance of the :class:`Screen`
+that a Turtle instance exists on; it's created automatically along with
+the turtle.
+
+The turtle's screen can be customised, for example::
+
+    t.screen.title('Object-oriented turtle demo')
+    t.screen.bgcolor("orange")
+
+
+Turtle graphics reference
+=========================
 
 .. note::
+
    In the following documentation the argument list for functions is given.
    Methods, of course, have the additional first argument *self* which is
    omitted here.
 
 
-Overview of available Turtle and Screen methods
-=================================================
-
 Turtle methods
 --------------
 
@@ -166,7 +365,6 @@ Turtle state
       | :func:`resizemode`
       | :func:`shapesize` | :func:`turtlesize`
       | :func:`shearfactor`
-      | :func:`settiltangle`
       | :func:`tiltangle`
       | :func:`tilt`
       | :func:`shapetransform`
@@ -359,18 +557,18 @@ Turtle motion
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> tp = turtle.pos()
-       >>> tp
-       (0.00,0.00)
-       >>> turtle.setpos(60,30)
-       >>> turtle.pos()
-       (60.00,30.00)
-       >>> turtle.setpos((20,80))
-       >>> turtle.pos()
-       (20.00,80.00)
-       >>> turtle.setpos(tp)
-       >>> turtle.pos()
-       (0.00,0.00)
+      >>> tp = turtle.pos()
+      >>> tp
+      (0.00,0.00)
+      >>> turtle.setpos(60,30)
+      >>> turtle.pos()
+      (60.00,30.00)
+      >>> turtle.setpos((20,80))
+      >>> turtle.pos()
+      (20.00,80.00)
+      >>> turtle.setpos(tp)
+      >>> turtle.pos()
+      (0.00,0.00)
 
 
 .. function:: teleport(x, y=None, *, fill_gap=False)
@@ -395,18 +593,18 @@ Turtle motion
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> tp = turtle.pos()
-       >>> tp
-       (0.00,0.00)
-       >>> turtle.teleport(60)
-       >>> turtle.pos()
-       (60.00,0.00)
-       >>> turtle.teleport(y=10)
-       >>> turtle.pos()
-       (60.00,10.00)
-       >>> turtle.teleport(20, 30)
-       >>> turtle.pos()
-       (20.00,30.00)
+      >>> tp = turtle.pos()
+      >>> tp
+      (0.00,0.00)
+      >>> turtle.teleport(60)
+      >>> turtle.pos()
+      (60.00,0.00)
+      >>> turtle.teleport(y=10)
+      >>> turtle.pos()
+      (60.00,10.00)
+      >>> turtle.teleport(20, 30)
+      >>> turtle.pos()
+      (20.00,30.00)
 
    .. versionadded: 3.12
 
@@ -950,23 +1148,23 @@ Color control
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> colormode()
-       1.0
-       >>> turtle.pencolor()
-       'red'
-       >>> turtle.pencolor("brown")
-       >>> turtle.pencolor()
-       'brown'
-       >>> tup = (0.2, 0.8, 0.55)
-       >>> turtle.pencolor(tup)
-       >>> turtle.pencolor()
-       (0.2, 0.8, 0.5490196078431373)
-       >>> colormode(255)
-       >>> turtle.pencolor()
-       (51.0, 204.0, 140.0)
-       >>> turtle.pencolor('#32c18f')
-       >>> turtle.pencolor()
-       (50.0, 193.0, 143.0)
+      >>> colormode()
+      1.0
+      >>> turtle.pencolor()
+      'red'
+      >>> turtle.pencolor("brown")
+      >>> turtle.pencolor()
+      'brown'
+      >>> tup = (0.2, 0.8, 0.55)
+      >>> turtle.pencolor(tup)
+      >>> turtle.pencolor()
+      (0.2, 0.8, 0.5490196078431373)
+      >>> colormode(255)
+      >>> turtle.pencolor()
+      (51.0, 204.0, 140.0)
+      >>> turtle.pencolor('#32c18f')
+      >>> turtle.pencolor()
+      (50.0, 193.0, 143.0)
 
 
 .. function:: fillcolor(*args)
@@ -999,17 +1197,17 @@ Color control
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> turtle.fillcolor("violet")
-       >>> turtle.fillcolor()
-       'violet'
-       >>> turtle.pencolor()
-       (50.0, 193.0, 143.0)
-       >>> turtle.fillcolor((50, 193, 143))  # Integers, not floats
-       >>> turtle.fillcolor()
-       (50.0, 193.0, 143.0)
-       >>> turtle.fillcolor('#ffffff')
-       >>> turtle.fillcolor()
-       (255.0, 255.0, 255.0)
+      >>> turtle.fillcolor("violet")
+      >>> turtle.fillcolor()
+      'violet'
+      >>> turtle.pencolor()
+      (50.0, 193.0, 143.0)
+      >>> turtle.fillcolor((50, 193, 143))  # Integers, not floats
+      >>> turtle.fillcolor()
+      (50.0, 193.0, 143.0)
+      >>> turtle.fillcolor('#ffffff')
+      >>> turtle.fillcolor()
+      (255.0, 255.0, 255.0)
 
 
 .. function:: color(*args)
@@ -1038,12 +1236,12 @@ Color control
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> turtle.color("red", "green")
-       >>> turtle.color()
-       ('red', 'green')
-       >>> color("#285078", "#a0c8f0")
-       >>> color()
-       ((40.0, 80.0, 120.0), (160.0, 200.0, 240.0))
+      >>> turtle.color("red", "green")
+      >>> turtle.color()
+      ('red', 'green')
+      >>> color("#285078", "#a0c8f0")
+      >>> color()
+      ((40.0, 80.0, 120.0), (160.0, 200.0, 240.0))
 
 
 See also: Screen method :func:`colormode`.
@@ -1065,11 +1263,11 @@ Filling
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> turtle.begin_fill()
-       >>> if turtle.filling():
-       ...    turtle.pensize(5)
-       ... else:
-       ...    turtle.pensize(3)
+      >>> turtle.begin_fill()
+      >>> if turtle.filling():
+      ...    turtle.pensize(5)
+      ... else:
+      ...    turtle.pensize(3)
 
 
 
@@ -1275,11 +1473,11 @@ Appearance
    .. doctest::
       :skipif: _tkinter is None
 
-       >>> turtle.shape("circle")
-       >>> turtle.shapesize(5,2)
-       >>> turtle.shearfactor(0.5)
-       >>> turtle.shearfactor()
-       0.5
+      >>> turtle.shape("circle")
+      >>> turtle.shapesize(5,2)
+      >>> turtle.shearfactor(0.5)
+      >>> turtle.shearfactor()
+      0.5
 
 
 .. function:: tilt(angle)
@@ -1301,28 +1499,6 @@ Appearance
       >>> turtle.fd(50)
 
 
-.. function:: settiltangle(angle)
-
-   :param angle: a number
-
-   Rotate the turtleshape to point in the direction specified by *angle*,
-   regardless of its current tilt-angle.  *Do not* change the turtle's heading
-   (direction of movement).
-
-   .. doctest::
-      :skipif: _tkinter is None or 'always; deprecated method'
-
-      >>> turtle.reset()
-      >>> turtle.shape("circle")
-      >>> turtle.shapesize(5,2)
-      >>> turtle.settiltangle(45)
-      >>> turtle.fd(50)
-      >>> turtle.settiltangle(-45)
-      >>> turtle.fd(50)
-
-   .. deprecated:: 3.1
-
-
 .. function:: tiltangle(angle=None)
 
    :param angle: a number (optional)
@@ -1648,11 +1824,11 @@ Window control
    ``"nopic"``, delete background image, if present.  If *picname* is ``None``,
    return the filename of the current backgroundimage. ::
 
-       >>> screen.bgpic()
-       'nopic'
-       >>> screen.bgpic("landscape.gif")
-       >>> screen.bgpic()
-       "landscape.gif"
+      >>> screen.bgpic()
+      'nopic'
+      >>> screen.bgpic("landscape.gif")
+      >>> screen.bgpic()
+      "landscape.gif"
 
 
 .. function:: clear()
@@ -2059,16 +2235,16 @@ Settings and special methods
 
    Return the height of the turtle window. ::
 
-       >>> screen.window_height()
-       480
+      >>> screen.window_height()
+      480
 
 
 .. function:: window_width()
 
    Return the width of the turtle window. ::
 
-       >>> screen.window_width()
-       640
+      >>> screen.window_width()
+      640
 
 
 .. _screenspecific:
@@ -2139,7 +2315,7 @@ Public classes
 .. class:: RawTurtle(canvas)
            RawPen(canvas)
 
-   :param canvas: a :class:`tkinter.Canvas`, a :class:`ScrolledCanvas` or a
+   :param canvas: a :class:`!tkinter.Canvas`, a :class:`ScrolledCanvas` or a
                   :class:`TurtleScreen`
 
    Create a turtle.  The turtle has all methods described above as "methods of
@@ -2154,7 +2330,7 @@ Public classes
 
 .. class:: TurtleScreen(cv)
 
-   :param cv: a :class:`tkinter.Canvas`
+   :param cv: a :class:`!tkinter.Canvas`
 
    Provides screen oriented methods like :func:`bgcolor` etc. that are described
    above.
@@ -2224,6 +2400,41 @@ Public classes
    * ``a.rotate(angle)`` rotation
 
 
+.. _turtle-explanation:
+
+Explanation
+===========
+
+A turtle object draws on a screen object, and there a number of key classes in
+the turtle object-oriented interface that can be used to create them and relate
+them to each other.
+
+A :class:`Turtle` instance will automatically create a :class:`Screen`
+instance if one is not already present.
+
+``Turtle`` is a subclass of :class:`RawTurtle`, which *doesn't* automatically
+create a drawing surface - a *canvas* will need to be provided or created for
+it. The *canvas* can be a :class:`!tkinter.Canvas`, :class:`ScrolledCanvas`
+or :class:`TurtleScreen`.
+
+
+:class:`TurtleScreen` is the basic drawing surface for a
+turtle. :class:`Screen` is a subclass of ``TurtleScreen``, and
+includes :ref:`some additional methods <screenspecific>` for managing its
+appearance (including size and title) and behaviour. ``TurtleScreen``'s
+constructor needs a :class:`!tkinter.Canvas` or a
+:class:`ScrolledCanvas` as an argument.
+
+The functional interface for turtle graphics uses the various methods of
+``Turtle`` and ``TurtleScreen``/``Screen``. Behind the scenes, a screen
+object is automatically created whenever a function derived from a ``Screen``
+method is called. Similarly, a turtle object is automatically created
+whenever any of the functions derived from a Turtle method is called.
+
+To use multiple turtles on a screen, the object-oriented interface must be
+used.
+
+
 Help and configuration
 ======================
 
@@ -2249,12 +2460,12 @@ facilities:
          in the range 0..colormode or a 3-tuple of such numbers.
 
 
-           >>> screen.bgcolor("orange")
-           >>> screen.bgcolor()
-           "orange"
-           >>> screen.bgcolor(0.5,0,0.5)
-           >>> screen.bgcolor()
-           "#800080"
+         >>> screen.bgcolor("orange")
+         >>> screen.bgcolor()
+         "orange"
+         >>> screen.bgcolor(0.5,0,0.5)
+         >>> screen.bgcolor()
+         "#800080"
 
      >>> help(Turtle.penup)
      Help on method penup in module turtle:
@@ -2529,8 +2740,7 @@ Changes since Python 3.0
   :func:`get_shapepoly` have been added. Thus the full range of
   regular linear transforms is now available for transforming turtle shapes.
   :func:`tiltangle` has been enhanced in functionality: it now can
-  be used to get or set the tilt angle. :func:`settiltangle` has been
-  deprecated.
+  be used to get or set the tilt angle.
 
 - The :class:`Screen` method :func:`onkeypress` has been added as a complement to
   :func:`onkey`. As the latter binds actions to the key release event,
diff --git a/Doc/library/types.rst b/Doc/library/types.rst
index 8cbe17df16f107..22766462822af9 100644
--- a/Doc/library/types.rst
+++ b/Doc/library/types.rst
@@ -200,6 +200,8 @@ Standard names are defined for the following types:
 
      Return a copy of the code object with new values for the specified fields.
 
+     Code objects are also supported by generic function :func:`copy.replace`.
+
      .. versionadded:: 3.8
 
 .. data:: CellType
@@ -386,7 +388,8 @@ Standard names are defined for the following types:
 .. data:: GetSetDescriptorType
 
    The type of objects defined in extension modules with ``PyGetSetDef``, such
-   as ``FrameType.f_locals`` or ``array.array.typecode``.  This type is used as
+   as :attr:`FrameType.f_locals <frame.f_locals>` or ``array.array.typecode``.
+   This type is used as
    descriptor for object attributes; it has the same purpose as the
    :class:`property` type, but for classes defined in extension modules.
 
@@ -470,6 +473,12 @@ Standard names are defined for the following types:
 
       .. versionadded:: 3.12
 
+.. class:: CapsuleType
+
+   The type of :ref:`capsule objects <capsules>`.
+
+   .. versionadded:: 3.13
+
 
 Additional Utility Classes and Functions
 ----------------------------------------
@@ -502,6 +511,8 @@ Additional Utility Classes and Functions
    However, for a structured record type use :func:`~collections.namedtuple`
    instead.
 
+   :class:`!SimpleNamespace` objects are supported by :func:`copy.replace`.
+
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.9
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
index c300c4257f0e81..ba2845eb17ddcc 100644
--- a/Doc/library/typing.rst
+++ b/Doc/library/typing.rst
@@ -2,6 +2,12 @@
 :mod:`typing` --- Support for type hints
 ========================================
 
+.. testsetup:: *
+
+   import typing
+   from dataclasses import dataclass
+   from typing import *
+
 .. module:: typing
    :synopsis: Support for type hints (see :pep:`484`).
 
@@ -12,15 +18,14 @@
 .. note::
 
    The Python runtime does not enforce function and variable type annotations.
-   They can be used by third party tools such as type checkers, IDEs, linters,
-   etc.
+   They can be used by third party tools such as :term:`type checkers <static type checker>`,
+   IDEs, linters, etc.
 
 --------------
 
-This module provides runtime support for type hints. The most fundamental
-support consists of the types :data:`Any`, :data:`Union`, :data:`Callable`,
-:class:`TypeVar`, and :class:`Generic`. For a specification, please see
-:pep:`484`. For a simplified introduction to type hints, see :pep:`483`.
+This module provides runtime support for type hints. For the original
+specification of the typing system, see :pep:`484`. For a simplified
+introduction to type hints, see :pep:`483`.
 
 
 The function below takes and returns a string and is annotated as follows::
@@ -41,16 +46,18 @@ For a summary of deprecated features and a deprecation timeline, please see
 
 .. seealso::
 
-   For a quick overview of type hints, refer to
-   `this cheat sheet <https://mypy.readthedocs.io/en/stable/cheat_sheet_py3.html>`_.
+   `"Typing cheat sheet" <https://mypy.readthedocs.io/en/stable/cheat_sheet_py3.html>`_
+       A quick overview of type hints (hosted at the mypy docs)
 
-   The "Type System Reference" section of https://mypy.readthedocs.io/ -- since
-   the Python typing system is standardised via PEPs, this reference should
-   broadly apply to most Python type checkers, although some parts may still be
-   specific to mypy.
+   "Type System Reference" section of `the mypy docs <https://mypy.readthedocs.io/en/stable/index.html>`_
+      The Python typing system is standardised via PEPs, so this reference
+      should broadly apply to most Python type checkers. (Some parts may still
+      be specific to mypy.)
 
-   The documentation at https://typing.readthedocs.io/ serves as useful reference
-   for type system features, useful typing related tools and typing best practices.
+   `"Static Typing with Python" <https://typing.readthedocs.io/en/latest/>`_
+      Type-checker-agnostic documentation written by the community detailing
+      type system features, useful typing related tools and typing best
+      practices.
 
 .. _relevant-peps:
 
@@ -59,7 +66,12 @@ Relevant PEPs
 
 Since the initial introduction of type hints in :pep:`484` and :pep:`483`, a
 number of PEPs have modified and enhanced Python's framework for type
-annotations. These include:
+annotations:
+
+.. raw:: html
+
+   <details>
+   <summary><a style="cursor:pointer;">The full list of PEPs</a></summary>
 
 * :pep:`526`: Syntax for Variable Annotations
      *Introducing* syntax for annotating variables outside of function
@@ -101,18 +113,27 @@ annotations. These include:
 * :pep:`692`: Using ``TypedDict`` for more precise ``**kwargs`` typing
     *Introducing* a new way of typing ``**kwargs`` with :data:`Unpack` and
     :data:`TypedDict`
+* :pep:`695`: Type Parameter Syntax
+    *Introducing* builtin syntax for creating generic functions, classes, and type aliases.
 * :pep:`698`: Adding an override decorator to typing
     *Introducing* the :func:`@override<override>` decorator
 
+.. raw:: html
+
+   </details>
+   <br>
+
 .. _type-aliases:
 
 Type aliases
 ============
 
-A type alias is defined by assigning the type to the alias. In this example,
-``Vector`` and ``list[float]`` will be treated as interchangeable synonyms::
+A type alias is defined using the :keyword:`type` statement, which creates
+an instance of :class:`TypeAliasType`. In this example,
+``Vector`` and ``list[float]`` will be treated equivalently by static type
+checkers::
 
-   Vector = list[float]
+   type Vector = list[float]
 
    def scale(scalar: float, vector: Vector) -> Vector:
        return [scalar * num for num in vector]
@@ -124,9 +145,9 @@ Type aliases are useful for simplifying complex type signatures. For example::
 
    from collections.abc import Sequence
 
-   ConnectionOptions = dict[str, str]
-   Address = tuple[str, int]
-   Server = tuple[Address, ConnectionOptions]
+   type ConnectionOptions = dict[str, str]
+   type Address = tuple[str, int]
+   type Server = tuple[Address, ConnectionOptions]
 
    def broadcast_message(message: str, servers: Sequence[Server]) -> None:
        ...
@@ -138,8 +159,17 @@ Type aliases are useful for simplifying complex type signatures. For example::
            servers: Sequence[tuple[tuple[str, int], dict[str, str]]]) -> None:
        ...
 
-Note that ``None`` as a type hint is a special case and is replaced by
-``type(None)``.
+The :keyword:`type` statement is new in Python 3.12. For backwards
+compatibility, type aliases can also be created through simple assignment::
+
+   Vector = list[float]
+
+Or marked with :data:`TypeAlias` to make it explicit that this is a type alias,
+not a normal variable assignment::
+
+   from typing import TypeAlias
+
+   Vector: TypeAlias = list[float]
 
 .. _distinct:
 
@@ -206,7 +236,7 @@ See :pep:`484` for more details.
 .. note::
 
    Recall that the use of a type alias declares two types to be *equivalent* to
-   one another. Doing ``Alias = Original`` will make the static type checker
+   one another. Doing ``type Alias = Original`` will make the static type checker
    treat ``Alias`` as being *exactly equivalent* to ``Original`` in all cases.
    This is useful when you want to simplify complex type signatures.
 
@@ -220,35 +250,85 @@ See :pep:`484` for more details.
 .. versionadded:: 3.5.2
 
 .. versionchanged:: 3.10
-   ``NewType`` is now a class rather than a function.  There is some additional
-   runtime cost when calling ``NewType`` over a regular function.  However, this
-   cost will be reduced in 3.11.0.
+   ``NewType`` is now a class rather than a function.  As a result, there is
+   some additional runtime cost when calling ``NewType`` over a regular
+   function.
 
+.. versionchanged:: 3.11
+   The performance of calling ``NewType`` has been restored to its level in
+   Python 3.9.
 
-Callable
-========
+.. _annotating-callables:
 
-Frameworks expecting callback functions of specific signatures might be
-type hinted using ``Callable[[Arg1Type, Arg2Type], ReturnType]``.
+Annotating callable objects
+===========================
 
-For example::
+Functions -- or other :term:`callable` objects -- can be annotated using
+:class:`collections.abc.Callable` or :data:`typing.Callable`.
+``Callable[[int], str]`` signifies a function that takes a single parameter
+of type :class:`int` and returns a :class:`str`.
+
+For example:
+
+.. testcode::
 
-   from collections.abc import Callable
+   from collections.abc import Callable, Awaitable
 
    def feeder(get_next_item: Callable[[], str]) -> None:
-       # Body
+       ...  # Body
 
    def async_query(on_success: Callable[[int], None],
                    on_error: Callable[[int, Exception], None]) -> None:
-       # Body
+       ...  # Body
 
    async def on_update(value: str) -> None:
-       # Body
+       ...  # Body
+
    callback: Callable[[str], Awaitable[None]] = on_update
 
-It is possible to declare the return type of a callable without specifying
-the call signature by substituting a literal ellipsis
-for the list of arguments in the type hint: ``Callable[..., ReturnType]``.
+The subscription syntax must always be used with exactly two values: the
+argument list and the return type.  The argument list must be a list of types,
+a :class:`ParamSpec`, :data:`Concatenate`, or an ellipsis. The return type must
+be a single type.
+
+If a literal ellipsis ``...`` is given as the argument list, it indicates that
+a callable with any arbitrary parameter list would be acceptable:
+
+.. testcode::
+
+   def concat(x: str, y: str) -> str:
+       return x + y
+
+   x: Callable[..., str]
+   x = str     # OK
+   x = concat  # Also OK
+
+``Callable`` cannot express complex signatures such as functions that take a
+variadic number of arguments, :ref:`overloaded functions <overload>`, or
+functions that have keyword-only parameters. However, these signatures can be
+expressed by defining a :class:`Protocol` class with a
+:meth:`~object.__call__` method:
+
+.. testcode::
+
+   from collections.abc import Iterable
+   from typing import Protocol
+
+   class Combiner(Protocol):
+       def __call__(self, *vals: bytes, maxlen: int | None = None) -> list[bytes]: ...
+
+   def batch_proc(data: Iterable[bytes], cb_results: Combiner) -> bytes:
+       for item in data:
+           ...
+
+   def good_cb(*vals: bytes, maxlen: int | None = None) -> list[bytes]:
+       ...
+   def bad_cb(*vals: bytes, maxitems: int | None) -> list[bytes]:
+       ...
+
+   batch_proc([], good_cb)  # OK
+   batch_proc([], bad_cb)   # Error! Argument 2 has incompatible type because of
+                            # different name and kind in the callback
 
 Callables which take other callables as arguments may indicate that their
 parameter types are dependent on each other using :class:`ParamSpec`.
@@ -272,28 +352,150 @@ Generics
 ========
 
 Since type information about objects kept in containers cannot be statically
-inferred in a generic way, abstract base classes have been extended to support
-subscription to denote expected types for container elements.
+inferred in a generic way, many container classes in the standard library support
+subscription to denote the expected types of container elements.
 
-::
+.. testcode::
 
    from collections.abc import Mapping, Sequence
 
+   class Employee: ...
+
+   # Sequence[Employee] indicates that all elements in the sequence
+   # must be instances of "Employee".
+   # Mapping[str, str] indicates that all keys and all values in the mapping
+   # must be strings.
    def notify_by_email(employees: Sequence[Employee],
                        overrides: Mapping[str, str]) -> None: ...
 
-Generics can be parameterized by using a factory available in typing
-called :class:`TypeVar`.
+Generic functions and classes can be parameterized by using
+:ref:`type parameter syntax <type-params>`::
 
-::
+   from collections.abc import Sequence
+
+   def first[T](l: Sequence[T]) -> T:  # Function is generic over the TypeVar "T"
+       return l[0]
+
+Or by using the :class:`TypeVar` factory directly::
 
    from collections.abc import Sequence
    from typing import TypeVar
 
-   T = TypeVar('T')      # Declare type variable
+   U = TypeVar('U')                  # Declare type variable "U"
 
-   def first(l: Sequence[T]) -> T:   # Generic function
-       return l[0]
+   def second(l: Sequence[U]) -> U:  # Function is generic over the TypeVar "U"
+       return l[1]
+
+.. versionchanged:: 3.12
+   Syntactic support for generics is new in Python 3.12.
+
+.. _annotating-tuples:
+
+Annotating tuples
+=================
+
+For most containers in Python, the typing system assumes that all elements in
+the container will be of the same type. For example::
+
+   from collections.abc import Mapping
+
+   # Type checker will infer that all elements in ``x`` are meant to be ints
+   x: list[int] = []
+
+   # Type checker error: ``list`` only accepts a single type argument:
+   y: list[int, str] = [1, 'foo']
+
+   # Type checker will infer that all keys in ``z`` are meant to be strings,
+   # and that all values in ``z`` are meant to be either strings or ints
+   z: Mapping[str, str | int] = {}
+
+:class:`list` only accepts one type argument, so a type checker would emit an
+error on the ``y`` assignment above. Similarly,
+:class:`~collections.abc.Mapping` only accepts two type arguments: the first
+indicates the type of the keys, and the second indicates the type of the
+values.
+
+Unlike most other Python containers, however, it is common in idiomatic Python
+code for tuples to have elements which are not all of the same type. For this
+reason, tuples are special-cased in Python's typing system. :class:`tuple`
+accepts *any number* of type arguments::
+
+   # OK: ``x`` is assigned to a tuple of length 1 where the sole element is an int
+   x: tuple[int] = (5,)
+
+   # OK: ``y`` is assigned to a tuple of length 2;
+   # element 1 is an int, element 2 is a str
+   y: tuple[int, str] = (5, "foo")
+
+   # Error: the type annotation indicates a tuple of length 1,
+   # but ``z`` has been assigned to a tuple of length 3
+   z: tuple[int] = (1, 2, 3)
+
+To denote a tuple which could be of *any* length, and in which all elements are
+of the same type ``T``, use ``tuple[T, ...]``. To denote an empty tuple, use
+``tuple[()]``. Using plain ``tuple`` as an annotation is equivalent to using
+``tuple[Any, ...]``::
+
+   x: tuple[int, ...] = (1, 2)
+   # These reassignments are OK: ``tuple[int, ...]`` indicates x can be of any length
+   x = (1, 2, 3)
+   x = ()
+   # This reassignment is an error: all elements in ``x`` must be ints
+   x = ("foo", "bar")
+
+   # ``y`` can only ever be assigned to an empty tuple
+   y: tuple[()] = ()
+
+   z: tuple = ("foo", "bar")
+   # These reassignments are OK: plain ``tuple`` is equivalent to ``tuple[Any, ...]``
+   z = (1, 2, 3)
+   z = ()
+
+.. _type-of-class-objects:
+
+The type of class objects
+=========================
+
+A variable annotated with ``C`` may accept a value of type ``C``. In
+contrast, a variable annotated with ``type[C]`` (or
+:class:`typing.Type[C] <Type>`) may accept values that are classes
+themselves -- specifically, it will accept the *class object* of ``C``. For
+example::
+
+   a = 3         # Has type ``int``
+   b = int       # Has type ``type[int]``
+   c = type(a)   # Also has type ``type[int]``
+
+Note that ``type[C]`` is covariant::
+
+   class User: ...
+   class ProUser(User): ...
+   class TeamUser(User): ...
+
+   def make_new_user(user_class: type[User]) -> User:
+       # ...
+       return user_class()
+
+   make_new_user(User)      # OK
+   make_new_user(ProUser)   # Also OK: ``type[ProUser]`` is a subtype of ``type[User]``
+   make_new_user(TeamUser)  # Still fine
+   make_new_user(User())    # Error: expected ``type[User]`` but got ``User``
+   make_new_user(int)       # Error: ``type[int]`` is not a subtype of ``type[User]``
+
+The only legal parameters for :class:`type` are classes, :data:`Any`,
+:ref:`type variables <generics>`, and unions of any of these types.
+For example::
+
+   def new_non_team_user(user_class: type[BasicUser | ProUser]): ...
+
+   new_non_team_user(BasicUser)  # OK
+   new_non_team_user(ProUser)    # OK
+   new_non_team_user(TeamUser)   # Error: ``type[TeamUser]`` is not a subtype
+                                 # of ``type[BasicUser | ProUser]``
+   new_non_team_user(User)       # Also an error
+
+``type[Any]`` is equivalent to :class:`type`, which is the root of Python's
+:ref:`metaclass hierarchy <metaclasses>`.
 
 .. _user-defined-generics:
 
@@ -304,12 +506,9 @@ A user-defined class can be defined as a generic class.
 
 ::
 
-   from typing import TypeVar, Generic
    from logging import Logger
 
-   T = TypeVar('T')
-
-   class LoggedVar(Generic[T]):
+   class LoggedVar[T]:
        def __init__(self, value: T, name: str, logger: Logger) -> None:
            self.name = name
            self.logger = logger
@@ -326,12 +525,23 @@ A user-defined class can be defined as a generic class.
        def log(self, message: str) -> None:
            self.logger.info('%s: %s', self.name, message)
 
-``Generic[T]`` as a base class defines that the class ``LoggedVar`` takes a
-single type parameter ``T`` . This also makes ``T`` valid as a type within the
-class body.
+This syntax indicates that the class ``LoggedVar`` is parameterised around a
+single :ref:`type variable <typevar>` ``T`` . This also makes ``T`` valid as
+a type within the class body.
+
+Generic classes implicitly inherit from :class:`Generic`. For compatibility
+with Python 3.11 and lower, it is also possible to inherit explicitly from
+:class:`Generic` to indicate a generic class::
+
+   from typing import TypeVar, Generic
+
+   T = TypeVar('T')
+
+   class LoggedVar(Generic[T]):
+       ...
 
-The :class:`Generic` base class defines :meth:`~object.__class_getitem__` so
-that ``LoggedVar[T]`` is valid as a type::
+Generic classes have :meth:`~object.__class_getitem__` methods, meaning they
+can be parameterised at runtime (e.g. ``LoggedVar[int]`` below)::
 
    from collections.abc import Iterable
 
@@ -344,11 +554,14 @@ A generic type can have any number of type variables. All varieties of
 
    from typing import TypeVar, Generic, Sequence
 
-   T = TypeVar('T', contravariant=True)
-   B = TypeVar('B', bound=Sequence[bytes], covariant=True)
-   S = TypeVar('S', int, str)
+   class WeirdTrio[T, B: Sequence[bytes], S: (int, str)]:
+       ...
+
+   OldT = TypeVar('OldT', contravariant=True)
+   OldB = TypeVar('OldB', bound=Sequence[bytes], covariant=True)
+   OldS = TypeVar('OldS', int, str)
 
-   class WeirdTrio(Generic[T, B, S]):
+   class OldWeirdTrio(Generic[OldT, OldB, OldS]):
        ...
 
 Each type variable argument to :class:`Generic` must be distinct.
@@ -357,91 +570,108 @@ This is thus invalid::
    from typing import TypeVar, Generic
    ...
 
+   class Pair[M, M]:  # SyntaxError
+       ...
+
    T = TypeVar('T')
 
    class Pair(Generic[T, T]):   # INVALID
        ...
 
-You can use multiple inheritance with :class:`Generic`::
+Generic classes can also inherit from other classes::
 
    from collections.abc import Sized
-   from typing import TypeVar, Generic
-
-   T = TypeVar('T')
 
-   class LinkedList(Sized, Generic[T]):
+   class LinkedList[T](Sized):
        ...
 
-When inheriting from generic classes, some type variables could be fixed::
+When inheriting from generic classes, some type parameters could be fixed::
 
     from collections.abc import Mapping
-    from typing import TypeVar
-
-    T = TypeVar('T')
 
-    class MyDict(Mapping[str, T]):
+    class MyDict[T](Mapping[str, T]):
         ...
 
 In this case ``MyDict`` has a single parameter, ``T``.
 
 Using a generic class without specifying type parameters assumes
 :data:`Any` for each position. In the following example, ``MyIterable`` is
-not generic but implicitly inherits from ``Iterable[Any]``::
+not generic but implicitly inherits from ``Iterable[Any]``:
+
+.. testcode::
 
    from collections.abc import Iterable
 
    class MyIterable(Iterable): # Same as Iterable[Any]
+       ...
 
-User defined generic type aliases are also supported. Examples::
+User-defined generic type aliases are also supported. Examples::
 
    from collections.abc import Iterable
-   from typing import TypeVar
-   S = TypeVar('S')
-   Response = Iterable[S] | int
+
+   type Response[S] = Iterable[S] | int
 
    # Return type here is same as Iterable[str] | int
    def response(query: str) -> Response[str]:
        ...
 
-   T = TypeVar('T', int, float, complex)
-   Vec = Iterable[tuple[T, T]]
+   type Vec[T] = Iterable[tuple[T, T]]
 
-   def inproduct(v: Vec[T]) -> T: # Same as Iterable[tuple[T, T]]
+   def inproduct[T: (int, float, complex)](v: Vec[T]) -> T: # Same as Iterable[tuple[T, T]]
        return sum(x*y for x, y in v)
 
+For backward compatibility, generic type aliases can also be created
+through a simple assignment::
+
+   from collections.abc import Iterable
+   from typing import TypeVar
+
+   S = TypeVar("S")
+   Response = Iterable[S] | int
+
 .. versionchanged:: 3.7
     :class:`Generic` no longer has a custom metaclass.
 
+.. versionchanged:: 3.12
+   Syntactic support for generics and type aliases is new in version 3.12.
+   Previously, generic classes had to explicitly inherit from :class:`Generic`
+   or contain a type variable in one of their bases.
+
 User-defined generics for parameter expressions are also supported via parameter
-specification variables in the form ``Generic[P]``.  The behavior is consistent
+specification variables in the form ``[**P]``.  The behavior is consistent
 with type variables' described above as parameter specification variables are
 treated by the typing module as a specialized type variable.  The one exception
 to this is that a list of types can be used to substitute a :class:`ParamSpec`::
 
-   >>> from typing import Generic, ParamSpec, TypeVar
-
-   >>> T = TypeVar('T')
-   >>> P = ParamSpec('P')
-
-   >>> class Z(Generic[T, P]): ...
+   >>> class Z[T, **P]: ...  # T is a TypeVar; P is a ParamSpec
    ...
    >>> Z[int, [dict, float]]
    __main__.Z[int, [dict, float]]
 
+Classes generic over a :class:`ParamSpec` can also be created using explicit
+inheritance from :class:`Generic`. In this case, ``**`` is not used::
 
-Furthermore, a generic with only one parameter specification variable will accept
+   from typing import ParamSpec, Generic
+
+   P = ParamSpec('P')
+
+   class Z(Generic[P]):
+       ...
+
+Another difference between :class:`TypeVar` and :class:`ParamSpec` is that a
+generic with only one parameter specification variable will accept
 parameter lists in the forms ``X[[Type1, Type2, ...]]`` and also
 ``X[Type1, Type2, ...]`` for aesthetic reasons.  Internally, the latter is converted
 to the former, so the following are equivalent::
 
-   >>> class X(Generic[P]): ...
+   >>> class X[**P]: ...
    ...
    >>> X[int, str]
    __main__.X[[int, str]]
    >>> X[[int, str]]
    __main__.X[[int, str]]
 
-Do note that generics with :class:`ParamSpec` may not have correct
+Note that generics with :class:`ParamSpec` may not have correct
 ``__parameters__`` after substitution in some cases because they
 are intended primarily for static type checking.
 
@@ -576,25 +806,7 @@ can define new custom protocols to fully enjoy structural subtyping
 Module contents
 ===============
 
-The module defines the following classes, functions and decorators.
-
-.. note::
-
-   This module defines several types that are subclasses of pre-existing
-   standard library classes which also extend :class:`Generic`
-   to support type variables inside ``[]``.
-   These types became redundant in Python 3.9 when the
-   corresponding pre-existing classes were enhanced to support ``[]``.
-
-   The redundant types are deprecated as of Python 3.9 but no
-   deprecation warnings will be issued by the interpreter.
-   It is expected that type checkers will flag the deprecated types
-   when the checked program targets Python 3.9 or newer.
-
-   The deprecated types will be removed from the :mod:`typing` module
-   no sooner than the first Python version released 5 years after the release of Python 3.9.0.
-   See details in :pep:`585`—*Type Hinting Generics In Standard Collections*.
-
+The ``typing`` module defines the following classes, functions and decorators.
 
 Special typing primitives
 -------------------------
@@ -602,7 +814,8 @@ Special typing primitives
 Special types
 """""""""""""
 
-These can be used as types in annotations and do not support ``[]``.
+These can be used as types in annotations. They do not support subscription
+using ``[]``.
 
 .. data:: Any
 
@@ -616,29 +829,78 @@ These can be used as types in annotations and do not support ``[]``.
       avoiding type checker errors with classes that can duck type anywhere or
       are highly dynamic.
 
+.. data:: AnyStr
+
+   A :ref:`constrained type variable <typing-constrained-typevar>`.
+
+   Definition::
+
+      AnyStr = TypeVar('AnyStr', str, bytes)
+
+   ``AnyStr`` is meant to be used for functions that may accept :class:`str` or
+   :class:`bytes` arguments but cannot allow the two to mix.
+
+   For example::
+
+      def concat(a: AnyStr, b: AnyStr) -> AnyStr:
+          return a + b
+
+      concat("foo", "bar")    # OK, output has type 'str'
+      concat(b"foo", b"bar")  # OK, output has type 'bytes'
+      concat("foo", b"bar")   # Error, cannot mix str and bytes
+
+   Note that, despite its name, ``AnyStr`` has nothing to do with the
+   :class:`Any` type, nor does it mean "any string". In particular, ``AnyStr``
+   and ``str | bytes`` are different from each other and have different use
+   cases::
+
+      # Invalid use of AnyStr:
+      # The type variable is used only once in the function signature,
+      # so cannot be "solved" by the type checker
+      def greet_bad(cond: bool) -> AnyStr:
+          return "hi there!" if cond else b"greetings!"
+
+      # The better way of annotating this function:
+      def greet_proper(cond: bool) -> str | bytes:
+          return "hi there!" if cond else b"greetings!"
+
+   .. deprecated-removed:: 3.13 3.18
+      Deprecated in favor of the new :ref:`type parameter syntax <type-params>`.
+      Use ``class A[T: (str, bytes)]: ...`` instead of importing ``AnyStr``. See
+      :pep:`695` for more details.
+
+      In Python 3.16, ``AnyStr`` will be removed from ``typing.__all__``, and
+      deprecation warnings will be emitted at runtime when it is accessed or
+      imported from ``typing``. ``AnyStr`` will be removed from ``typing``
+      in Python 3.18.
+
 .. data:: LiteralString
 
-   Special type that includes only literal strings. A string
+   Special type that includes only literal strings.
+
+   Any string
    literal is compatible with ``LiteralString``, as is another
-   ``LiteralString``, but an object typed as just ``str`` is not.
+   ``LiteralString``. However, an object typed as just ``str`` is not.
    A string created by composing ``LiteralString``-typed objects
    is also acceptable as a ``LiteralString``.
 
-   Example::
+   Example:
+
+   .. testcode::
 
-      def run_query(sql: LiteralString) -> ...
+      def run_query(sql: LiteralString) -> None:
           ...
 
       def caller(arbitrary_string: str, literal_string: LiteralString) -> None:
-          run_query("SELECT * FROM students")  # ok
-          run_query(literal_string)  # ok
-          run_query("SELECT * FROM " + literal_string)  # ok
+          run_query("SELECT * FROM students")  # OK
+          run_query(literal_string)  # OK
+          run_query("SELECT * FROM " + literal_string)  # OK
           run_query(arbitrary_string)  # type checker error
           run_query(  # type checker error
               f"SELECT * FROM students WHERE name = {arbitrary_string}"
           )
 
-   This is useful for sensitive APIs where arbitrary user-generated
+   ``LiteralString`` is useful for sensitive APIs where arbitrary user-generated
    strings could generate problems. For example, the two cases above
    that generate type checker errors could be vulnerable to an SQL
    injection attack.
@@ -655,20 +917,20 @@ These can be used as types in annotations and do not support ``[]``.
    This can be used to define a function that should never be
    called, or a function that never returns::
 
-     from typing import Never
+      from typing import Never
 
-     def never_call_me(arg: Never) -> None:
-         pass
+      def never_call_me(arg: Never) -> None:
+          pass
 
-     def int_or_str(arg: int | str) -> None:
-         never_call_me(arg)  # type checker error
-         match arg:
-             case int():
-                 print("It's an int")
-             case str():
-                 print("It's a str")
-             case _:
-                 never_call_me(arg)  # ok, arg is of type Never
+      def int_or_str(arg: int | str) -> None:
+          never_call_me(arg)  # type checker error
+          match arg:
+              case int():
+                  print("It's an int")
+              case str():
+                  print("It's a str")
+              case _:
+                  never_call_me(arg)  # OK, arg is of type Never
 
    .. versionadded:: 3.11
 
@@ -678,6 +940,7 @@ These can be used as types in annotations and do not support ``[]``.
 .. data:: NoReturn
 
    Special type indicating that a function never returns.
+
    For example::
 
       from typing import NoReturn
@@ -697,15 +960,20 @@ These can be used as types in annotations and do not support ``[]``.
 .. data:: Self
 
    Special type to represent the current enclosed class.
+
    For example::
 
-      from typing import Self
+      from typing import Self, reveal_type
 
       class Foo:
-         def return_self(self) -> Self:
-            ...
-            return self
+          def return_self(self) -> Self:
+              ...
+              return self
+
+      class SubclassOfFoo(Foo): pass
 
+      reveal_type(Foo().return_self())  # Revealed type is "Foo"
+      reveal_type(SubclassOfFoo().return_self())  # Revealed type is "SubclassOfFoo"
 
    This annotation is semantically equivalent to the following,
    albeit in a more succinct fashion::
@@ -715,19 +983,15 @@ These can be used as types in annotations and do not support ``[]``.
       Self = TypeVar("Self", bound="Foo")
 
       class Foo:
-         def return_self(self: Self) -> Self:
-            ...
-            return self
-
-   In general if something currently follows the pattern of::
-
-      class Foo:
-         def return_self(self) -> "Foo":
-            ...
-            return self
+          def return_self(self: Self) -> Self:
+              ...
+              return self
 
-   You should use :data:`Self` as calls to ``SubclassOfFoo.return_self`` would have
-   ``Foo`` as the return type and not ``SubclassOfFoo``.
+   In general, if something returns ``self``, as in the above examples, you
+   should use ``Self`` as the return annotation. If ``Foo.return_self`` was
+   annotated as returning ``"Foo"``, then the type checker would infer the
+   object returned from ``SubclassOfFoo.return_self`` as being of type ``Foo``
+   rather than ``SubclassOfFoo``.
 
    Other common use cases include:
 
@@ -735,6 +999,17 @@ These can be used as types in annotations and do not support ``[]``.
      of the ``cls`` parameter.
    - Annotating an :meth:`~object.__enter__` method which returns self.
 
+   You should not use ``Self`` as the return annotation if the method is not
+   guaranteed to return an instance of a subclass when the class is
+   subclassed::
+
+      class Eggs:
+          # Self would be an incorrect return annotation here,
+          # as the object returned is always an instance of Eggs,
+          # even in subclasses
+          def returns_eggs(self) -> "Eggs":
+              return Eggs()
+
    See :pep:`673` for more details.
 
    .. versionadded:: 3.11
@@ -742,38 +1017,52 @@ These can be used as types in annotations and do not support ``[]``.
 .. data:: TypeAlias
 
    Special annotation for explicitly declaring a :ref:`type alias <type-aliases>`.
+
    For example::
 
-    from typing import TypeAlias
+      from typing import TypeAlias
 
-    Factors: TypeAlias = list[int]
+      Factors: TypeAlias = list[int]
 
-   See :pep:`613` for more details about explicit type aliases.
+   ``TypeAlias`` is particularly useful on older Python versions for annotating
+   aliases that make use of forward references, as it can be hard for type
+   checkers to distinguish these from normal variable assignments:
 
-   .. versionadded:: 3.10
+   .. testcode::
 
-Special forms
-"""""""""""""
+      from typing import Generic, TypeAlias, TypeVar
 
-These can be used as types in annotations using ``[]``, each having a unique syntax.
+      T = TypeVar("T")
 
-.. data:: Tuple
+      # "Box" does not exist yet,
+      # so we have to use quotes for the forward reference on Python <3.12.
+      # Using ``TypeAlias`` tells the type checker that this is a type alias declaration,
+      # not a variable assignment to a string.
+      BoxOfStrings: TypeAlias = "Box[str]"
 
-   Tuple type; ``Tuple[X, Y]`` is the type of a tuple of two items
-   with the first item of type X and the second of type Y. The type of
-   the empty tuple can be written as ``Tuple[()]``.
+      class Box(Generic[T]):
+          @classmethod
+          def make_box_of_strings(cls) -> BoxOfStrings: ...
 
-   Example: ``Tuple[T1, T2]`` is a tuple of two elements corresponding
-   to type variables T1 and T2.  ``Tuple[int, float, str]`` is a tuple
-   of an int, a float and a string.
+   See :pep:`613` for more details.
 
-   To specify a variable-length tuple of homogeneous type,
-   use literal ellipsis, e.g. ``Tuple[int, ...]``. A plain :data:`Tuple`
-   is equivalent to ``Tuple[Any, ...]``, and in turn to :class:`tuple`.
+   .. versionadded:: 3.10
 
-   .. deprecated:: 3.9
-      :class:`builtins.tuple <tuple>` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   .. deprecated:: 3.12
+      :data:`TypeAlias` is deprecated in favor of the :keyword:`type` statement,
+      which creates instances of :class:`TypeAliasType`
+      and which natively supports forward references.
+      Note that while :data:`TypeAlias` and :class:`TypeAliasType` serve
+      similar purposes and have similar names, they are distinct and the
+      latter is not the type of the former.
+      Removal of :data:`TypeAlias` is not currently planned, but users
+      are encouraged to migrate to :keyword:`type` statements.
+
+Special forms
+"""""""""""""
+
+These can be used as types in annotations. They all support subscription using
+``[]``, but each has a unique syntax.
 
 .. data:: Union
 
@@ -812,8 +1101,6 @@ These can be used as types in annotations using ``[]``, each having a unique syn
 
 .. data:: Optional
 
-   Optional type.
-
    ``Optional[X]`` is equivalent to ``X | None`` (or ``Union[X, None]``).
 
    Note that this is not the same concept as an optional argument,
@@ -835,50 +1122,16 @@ These can be used as types in annotations using ``[]``, each having a unique syn
       Optional can now be written as ``X | None``. See
       :ref:`union type expressions<types-union>`.
 
-.. data:: Callable
-
-   Callable type; ``Callable[[int], str]`` is a function of (int) -> str.
-
-   The subscription syntax must always be used with exactly two
-   values: the argument list and the return type.  The argument list
-   must be a list of types or an ellipsis; the return type must be
-   a single type.
-
-   There is no syntax to indicate optional or keyword arguments;
-   such function types are rarely used as callback types.
-   ``Callable[..., ReturnType]`` (literal ellipsis) can be used to
-   type hint a callable taking any number of arguments and returning
-   ``ReturnType``.  A plain :data:`Callable` is equivalent to
-   ``Callable[..., Any]``, and in turn to
-   :class:`collections.abc.Callable`.
-
-   Callables which take other callables as arguments may indicate that their
-   parameter types are dependent on each other using :class:`ParamSpec`.
-   Additionally, if that callable adds or removes arguments from other
-   callables, the :data:`Concatenate` operator may be used.  They
-   take the form ``Callable[ParamSpecVariable, ReturnType]`` and
-   ``Callable[Concatenate[Arg1Type, Arg2Type, ..., ParamSpecVariable], ReturnType]``
-   respectively.
-
-   .. deprecated:: 3.9
-      :class:`collections.abc.Callable` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
-
-   .. versionchanged:: 3.10
-      ``Callable`` now supports :class:`ParamSpec` and :data:`Concatenate`.
-      See :pep:`612` for more details.
-
-   .. seealso::
-      The documentation for :class:`ParamSpec` and :class:`Concatenate` provide
-      examples of usage with ``Callable``.
-
 .. data:: Concatenate
 
-   Used with :data:`Callable` and :class:`ParamSpec` to type annotate a higher
-   order callable which adds, removes, or transforms parameters of another
+   Special form for annotating higher-order functions.
+
+   ``Concatenate`` can be used in conjunction with :ref:`Callable <annotating-callables>` and
+   :class:`ParamSpec` to annotate a higher-order callable which adds, removes,
+   or transforms parameters of another
    callable.  Usage is in the form
    ``Concatenate[Arg1Type, Arg2Type, ..., ParamSpecVariable]``. ``Concatenate``
-   is currently only valid when used as the first argument to a :data:`Callable`.
+   is currently only valid when used as the first argument to a :ref:`Callable <annotating-callables>`.
    The last parameter to ``Concatenate`` must be a :class:`ParamSpec` or
    ellipsis (``...``).
 
@@ -892,16 +1145,13 @@ These can be used as types in annotations using ``[]``, each having a unique syn
 
       from collections.abc import Callable
       from threading import Lock
-      from typing import Concatenate, ParamSpec, TypeVar
-
-      P = ParamSpec('P')
-      R = TypeVar('R')
+      from typing import Concatenate
 
       # Use this lock to ensure that only one thread is executing a function
       # at any time.
       my_lock = Lock()
 
-      def with_lock(f: Callable[Concatenate[Lock, P], R]) -> Callable[P, R]:
+      def with_lock[**P, R](f: Callable[Concatenate[Lock, P], R]) -> Callable[P, R]:
           '''A type-safe decorator which provides a lock.'''
           def inner(*args: P.args, **kwargs: P.kwargs) -> R:
               # Provide the lock as the first argument.
@@ -917,75 +1167,33 @@ These can be used as types in annotations using ``[]``, each having a unique syn
       # We don't need to pass in the lock ourselves thanks to the decorator.
       sum_threadsafe([1.1, 2.2, 3.3])
 
-.. versionadded:: 3.10
-
-.. seealso::
-
-   * :pep:`612` -- Parameter Specification Variables (the PEP which introduced
-     ``ParamSpec`` and ``Concatenate``).
-   * :class:`ParamSpec` and :class:`Callable`.
-
-
-.. class:: Type(Generic[CT_co])
-
-   A variable annotated with ``C`` may accept a value of type ``C``. In
-   contrast, a variable annotated with ``Type[C]`` may accept values that are
-   classes themselves -- specifically, it will accept the *class object* of
-   ``C``. For example::
-
-      a = 3         # Has type 'int'
-      b = int       # Has type 'Type[int]'
-      c = type(a)   # Also has type 'Type[int]'
-
-   Note that ``Type[C]`` is covariant::
-
-      class User: ...
-      class BasicUser(User): ...
-      class ProUser(User): ...
-      class TeamUser(User): ...
-
-      # Accepts User, BasicUser, ProUser, TeamUser, ...
-      def make_new_user(user_class: Type[User]) -> User:
-          # ...
-          return user_class()
-
-   The fact that ``Type[C]`` is covariant implies that all subclasses of
-   ``C`` should implement the same constructor signature and class method
-   signatures as ``C``. The type checker should flag violations of this,
-   but should also allow constructor calls in subclasses that match the
-   constructor calls in the indicated base class. How the type checker is
-   required to handle this particular case may change in future revisions of
-   :pep:`484`.
-
-   The only legal parameters for :class:`Type` are classes, :data:`Any`,
-   :ref:`type variables <generics>`, and unions of any of these types.
-   For example::
+   .. versionadded:: 3.10
 
-      def new_non_team_user(user_class: Type[BasicUser | ProUser]): ...
+   .. seealso::
 
-   ``Type[Any]`` is equivalent to ``Type`` which in turn is equivalent
-   to ``type``, which is the root of Python's metaclass hierarchy.
+      * :pep:`612` -- Parameter Specification Variables (the PEP which introduced
+        ``ParamSpec`` and ``Concatenate``)
+      * :class:`ParamSpec`
+      * :ref:`annotating-callables`
 
-   .. versionadded:: 3.5.2
+.. data:: Literal
 
-   .. deprecated:: 3.9
-      :class:`builtins.type <type>` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   Special typing form to define "literal types".
 
-.. data:: Literal
+   ``Literal`` can be used to indicate to type checkers that the
+   annotated object has a value equivalent to one of the
+   provided literals.
 
-   A type that can be used to indicate to type checkers that the
-   corresponding variable or function parameter has a value equivalent to
-   the provided literal (or one of several literals). For example::
+   For example::
 
       def validate_simple(data: Any) -> Literal[True]:  # always returns True
           ...
 
-      MODE = Literal['r', 'rb', 'w', 'wb']
-      def open_helper(file: str, mode: MODE) -> str:
+      type Mode = Literal['r', 'rb', 'w', 'wb']
+      def open_helper(file: str, mode: Mode) -> str:
           ...
 
-      open_helper('/some/path', 'r')  # Passes type check
+      open_helper('/some/path', 'r')      # Passes type check
       open_helper('/other/path', 'typo')  # Error in type checker
 
    ``Literal[...]`` cannot be subclassed. At runtime, an arbitrary value
@@ -1028,8 +1236,12 @@ These can be used as types in annotations using ``[]``, each having a unique syn
 
 .. data:: Final
 
-   A special typing construct to indicate to type checkers that a name
-   cannot be re-assigned or overridden in a subclass. For example::
+   Special typing construct to indicate final names to type checkers.
+
+   Final names cannot be reassigned in any scope. Final names declared in class
+   scopes cannot be overridden in subclasses.
+
+   For example::
 
       MAX_SIZE: Final = 9000
       MAX_SIZE += 1  # Error reported by type checker
@@ -1047,10 +1259,17 @@ These can be used as types in annotations using ``[]``, each having a unique syn
 
 .. data:: Required
 
+   Special typing construct to mark a :class:`TypedDict` key as required.
+
+   This is mainly useful for ``total=False`` TypedDicts. See :class:`TypedDict`
+   and :pep:`655` for more details.
+
+   .. versionadded:: 3.11
+
 .. data:: NotRequired
 
-   Special typing constructs that mark individual keys of a :class:`TypedDict`
-   as either required or non-required respectively.
+   Special typing construct to mark a :class:`TypedDict` key as potentially
+   missing.
 
    See :class:`TypedDict` and :pep:`655` for more details.
 
@@ -1058,92 +1277,150 @@ These can be used as types in annotations using ``[]``, each having a unique syn
 
 .. data:: Annotated
 
-   A type, introduced in :pep:`593` (``Flexible function and variable
-   annotations``), to decorate existing types with context-specific metadata
-   (possibly multiple pieces of it, as ``Annotated`` is variadic).
-   Specifically, a type ``T`` can be annotated with metadata ``x`` via the
-   typehint ``Annotated[T, x]``. This metadata can be used for either static
-   analysis or at runtime. If a library (or tool) encounters a typehint
-   ``Annotated[T, x]`` and has no special logic for metadata ``x``, it
-   should ignore it and simply treat the type as ``T``. Unlike the
-   ``no_type_check`` functionality that currently exists in the ``typing``
-   module which completely disables typechecking annotations on a function
-   or a class, the ``Annotated`` type allows for both static typechecking
-   of ``T`` (which can safely ignore ``x``)
-   together with runtime access to ``x`` within a specific application.
-
-   Ultimately, the responsibility of how to interpret the annotations (if
-   at all) is the responsibility of the tool or library encountering the
-   ``Annotated`` type. A tool or library encountering an ``Annotated`` type
-   can scan through the annotations to determine if they are of interest
-   (e.g., using ``isinstance()``).
-
-   When a tool or a library does not support annotations or encounters an
-   unknown annotation it should just ignore it and treat annotated type as
-   the underlying type.
-
-   It's up to the tool consuming the annotations to decide whether the
-   client is allowed to have several annotations on one type and how to
-   merge those annotations.
-
-   Since the ``Annotated`` type allows you to put several annotations of
-   the same (or different) type(s) on any node, the tools or libraries
-   consuming those annotations are in charge of dealing with potential
-   duplicates. For example, if you are doing value range analysis you might
-   allow this::
-
-       T1 = Annotated[int, ValueRange(-10, 5)]
-       T2 = Annotated[T1, ValueRange(-20, 3)]
-
-   Passing ``include_extras=True`` to :func:`get_type_hints` lets one
-   access the extra annotations at runtime.
-
-   The details of the syntax:
+   Special typing form to add context-specific metadata to an annotation.
+
+   Add metadata ``x`` to a given type ``T`` by using the annotation
+   ``Annotated[T, x]``. Metadata added using ``Annotated`` can be used by
+   static analysis tools or at runtime. At runtime, the metadata is stored
+   in a :attr:`!__metadata__` attribute.
+
+   If a library or tool encounters an annotation ``Annotated[T, x]`` and has
+   no special logic for the metadata, it should ignore the metadata and simply
+   treat the annotation as ``T``. As such, ``Annotated`` can be useful for code
+   that wants to use annotations for purposes outside Python's static typing
+   system.
+
+   Using ``Annotated[T, x]`` as an annotation still allows for static
+   typechecking of ``T``, as type checkers will simply ignore the metadata ``x``.
+   In this way, ``Annotated`` differs from the
+   :func:`@no_type_check <no_type_check>` decorator, which can also be used for
+   adding annotations outside the scope of the typing system, but
+   completely disables typechecking for a function or class.
+
+   The responsibility of how to interpret the metadata
+   lies with the tool or library encountering an
+   ``Annotated`` annotation. A tool or library encountering an ``Annotated`` type
+   can scan through the metadata elements to determine if they are of interest
+   (e.g., using :func:`isinstance`).
+
+   .. describe:: Annotated[<type>, <metadata>]
+
+   Here is an example of how you might use ``Annotated`` to add metadata to
+   type annotations if you were doing range analysis:
+
+   .. testcode::
+
+      @dataclass
+      class ValueRange:
+          lo: int
+          hi: int
+
+      T1 = Annotated[int, ValueRange(-10, 5)]
+      T2 = Annotated[T1, ValueRange(-20, 3)]
+
+   Details of the syntax:
 
    * The first argument to ``Annotated`` must be a valid type
 
-   * Multiple type annotations are supported (``Annotated`` supports variadic
+   * Multiple metadata elements can be supplied (``Annotated`` supports variadic
      arguments)::
 
-       Annotated[int, ValueRange(3, 10), ctype("char")]
+        @dataclass
+        class ctype:
+            kind: str
+
+        Annotated[int, ValueRange(3, 10), ctype("char")]
 
-   * ``Annotated`` must be called with at least two arguments (
+     It is up to the tool consuming the annotations to decide whether the
+     client is allowed to add multiple metadata elements to one annotation and how to
+     merge those annotations.
+
+   * ``Annotated`` must be subscripted with at least two arguments (
      ``Annotated[int]`` is not valid)
 
-   * The order of the annotations is preserved and matters for equality
+   * The order of the metadata elements is preserved and matters for equality
      checks::
 
-       Annotated[int, ValueRange(3, 10), ctype("char")] != Annotated[
-           int, ctype("char"), ValueRange(3, 10)
-       ]
+        assert Annotated[int, ValueRange(3, 10), ctype("char")] != Annotated[
+            int, ctype("char"), ValueRange(3, 10)
+        ]
+
+   * Nested ``Annotated`` types are flattened. The order of the metadata elements
+     starts with the innermost annotation::
+
+        assert Annotated[Annotated[int, ValueRange(3, 10)], ctype("char")] == Annotated[
+            int, ValueRange(3, 10), ctype("char")
+        ]
+
+   * Duplicated metadata elements are not removed::
+
+        assert Annotated[int, ValueRange(3, 10)] != Annotated[
+            int, ValueRange(3, 10), ValueRange(3, 10)
+        ]
+
+   * ``Annotated`` can be used with nested and generic aliases:
+
+     .. testcode::
+
+        @dataclass
+        class MaxLen:
+            value: int
+
+        type Vec[T] = Annotated[list[tuple[T, T]], MaxLen(10)]
+
+        # When used in a type annotation, a type checker will treat "V" the same as
+        # ``Annotated[list[tuple[int, int]], MaxLen(10)]``:
+        type V = Vec[int]
+
+   * ``Annotated`` cannot be used with an unpacked :class:`TypeVarTuple`::
+
+        type Variadic[*Ts] = Annotated[*Ts, Ann1]  # NOT valid
 
-   * Nested ``Annotated`` types are flattened, with metadata ordered
-     starting with the innermost annotation::
+     This would be equivalent to::
 
-       Annotated[Annotated[int, ValueRange(3, 10)], ctype("char")] == Annotated[
-           int, ValueRange(3, 10), ctype("char")
-       ]
+        Annotated[T1, T2, T3, ..., Ann1]
 
-   * Duplicated annotations are not removed::
+     where ``T1``, ``T2``, etc. are :class:`TypeVars <TypeVar>`. This would be
+     invalid: only one type should be passed to Annotated.
 
-       Annotated[int, ValueRange(3, 10)] != Annotated[
-           int, ValueRange(3, 10), ValueRange(3, 10)
-       ]
+   * By default, :func:`get_type_hints` strips the metadata from annotations.
+     Pass ``include_extras=True`` to have the metadata preserved:
 
-   * ``Annotated`` can be used with nested and generic aliases::
+     .. doctest::
 
-       T = TypeVar('T')
-       Vec = Annotated[list[tuple[T, T]], MaxLen(10)]
-       V = Vec[int]
+        >>> from typing import Annotated, get_type_hints
+        >>> def func(x: Annotated[int, "metadata"]) -> None: pass
+        ...
+        >>> get_type_hints(func)
+        {'x': <class 'int'>, 'return': <class 'NoneType'>}
+        >>> get_type_hints(func, include_extras=True)
+        {'x': typing.Annotated[int, 'metadata'], 'return': <class 'NoneType'>}
+
+   * At runtime, the metadata associated with an ``Annotated`` type can be
+     retrieved via the :attr:`!__metadata__` attribute:
+
+     .. doctest::
+
+        >>> from typing import Annotated
+        >>> X = Annotated[int, "very", "important", "metadata"]
+        >>> X
+        typing.Annotated[int, 'very', 'important', 'metadata']
+        >>> X.__metadata__
+        ('very', 'important', 'metadata')
 
-       V == Annotated[list[tuple[int, int]], MaxLen(10)]
+   .. seealso::
+
+      :pep:`593` - Flexible function and variable annotations
+         The PEP introducing ``Annotated`` to the standard library.
 
    .. versionadded:: 3.9
 
 
 .. data:: TypeGuard
 
-   Special typing form used to annotate the return type of a user-defined
+   Special typing construct for marking user-defined type guard functions.
+
+   ``TypeGuard`` can be used to annotate the return type of a user-defined
    type guard function.  ``TypeGuard`` only accepts a single type argument.
    At runtime, functions marked this way should return a boolean.
 
@@ -1208,256 +1485,379 @@ These can be used as types in annotations using ``[]``, each having a unique syn
    .. versionadded:: 3.10
 
 
-Building generic types
-""""""""""""""""""""""
-
-These are not used in annotations. They are building blocks for creating generic types.
+.. data:: Unpack
 
-.. class:: Generic
+   Typing operator to conceptually mark an object as having been unpacked.
 
-   Abstract base class for generic types.
+   For example, using the unpack operator ``*`` on a
+   :ref:`type variable tuple <typevartuple>` is equivalent to using ``Unpack``
+   to mark the type variable tuple as having been unpacked::
 
-   A generic type is typically declared by inheriting from an
-   instantiation of this class with one or more type variables.
-   For example, a generic mapping type might be defined as::
+      Ts = TypeVarTuple('Ts')
+      tup: tuple[*Ts]
+      # Effectively does:
+      tup: tuple[Unpack[Ts]]
 
-      class Mapping(Generic[KT, VT]):
-          def __getitem__(self, key: KT) -> VT:
-              ...
-              # Etc.
+   In fact, ``Unpack`` can be used interchangeably with ``*`` in the context
+   of :class:`typing.TypeVarTuple <TypeVarTuple>` and
+   :class:`builtins.tuple <tuple>` types. You might see ``Unpack`` being used
+   explicitly in older versions of Python, where ``*`` couldn't be used in
+   certain places::
 
-   This class can then be used as follows::
+      # In older versions of Python, TypeVarTuple and Unpack
+      # are located in the `typing_extensions` backports package.
+      from typing_extensions import TypeVarTuple, Unpack
 
-      X = TypeVar('X')
-      Y = TypeVar('Y')
+      Ts = TypeVarTuple('Ts')
+      tup: tuple[*Ts]         # Syntax error on Python <= 3.10!
+      tup: tuple[Unpack[Ts]]  # Semantically equivalent, and backwards-compatible
 
-      def lookup_name(mapping: Mapping[X, Y], key: X, default: Y) -> Y:
+   ``Unpack`` can also be used along with :class:`typing.TypedDict` for typing
+   ``**kwargs`` in a function signature::
+
+      from typing import TypedDict, Unpack
+
+      class Movie(TypedDict):
+          name: str
+          year: int
+
+      # This function expects two keyword arguments - `name` of type `str`
+      # and `year` of type `int`.
+      def foo(**kwargs: Unpack[Movie]): ...
+
+   See :pep:`692` for more details on using ``Unpack`` for ``**kwargs`` typing.
+
+   .. versionadded:: 3.11
+
+Building generic types and type aliases
+"""""""""""""""""""""""""""""""""""""""
+
+The following classes should not be used directly as annotations.
+Their intended purpose is to be building blocks
+for creating generic types and type aliases.
+
+These objects can be created through special syntax
+(:ref:`type parameter lists <type-params>` and the :keyword:`type` statement).
+For compatibility with Python 3.11 and earlier, they can also be created
+without the dedicated syntax, as documented below.
+
+.. class:: Generic
+
+   Abstract base class for generic types.
+
+   A generic type is typically declared by adding a list of type parameters
+   after the class name::
+
+      class Mapping[KT, VT]:
+          def __getitem__(self, key: KT) -> VT:
+              ...
+              # Etc.
+
+   Such a class implicitly inherits from ``Generic``.
+   The runtime semantics of this syntax are discussed in the
+   :ref:`Language Reference <generic-classes>`.
+
+   This class can then be used as follows::
+
+      def lookup_name[X, Y](mapping: Mapping[X, Y], key: X, default: Y) -> Y:
           try:
               return mapping[key]
           except KeyError:
               return default
 
-.. class:: TypeVar
+   Here the brackets after the function name indicate a
+   :ref:`generic function <generic-functions>`.
 
-    Type variable.
+   For backwards compatibility, generic classes can also be
+   declared by explicitly inheriting from
+   ``Generic``. In this case, the type parameters must be declared
+   separately::
 
-    Usage::
+      KT = TypeVar('KT')
+      VT = TypeVar('VT')
+
+      class Mapping(Generic[KT, VT]):
+          def __getitem__(self, key: KT) -> VT:
+              ...
+              # Etc.
+
+.. _typevar:
+
+.. class:: TypeVar(name, *constraints, bound=None, covariant=False, contravariant=False, infer_variance=False)
+
+   Type variable.
+
+   The preferred way to construct a type variable is via the dedicated syntax
+   for :ref:`generic functions <generic-functions>`,
+   :ref:`generic classes <generic-classes>`, and
+   :ref:`generic type aliases <generic-type-aliases>`::
+
+      class Sequence[T]:  # T is a TypeVar
+          ...
+
+   This syntax can also be used to create bound and constrained type
+   variables::
+
+      class StrSequence[S: str]:  # S is a TypeVar bound to str
+          ...
+
+
+      class StrOrBytesSequence[A: (str, bytes)]:  # A is a TypeVar constrained to str or bytes
+          ...
+
+   However, if desired, reusable type variables can also be constructed manually, like so::
 
       T = TypeVar('T')  # Can be anything
       S = TypeVar('S', bound=str)  # Can be any subtype of str
       A = TypeVar('A', str, bytes)  # Must be exactly str or bytes
 
-    Type variables exist primarily for the benefit of static type
-    checkers.  They serve as the parameters for generic types as well
-    as for generic function definitions.  See :class:`Generic` for more
-    information on generic types.  Generic functions work as follows::
+   Type variables exist primarily for the benefit of static type
+   checkers.  They serve as the parameters for generic types as well
+   as for generic function and type alias definitions.
+   See :class:`Generic` for more
+   information on generic types.  Generic functions work as follows::
 
-       def repeat(x: T, n: int) -> Sequence[T]:
-           """Return a list containing n references to x."""
-           return [x]*n
+      def repeat[T](x: T, n: int) -> Sequence[T]:
+          """Return a list containing n references to x."""
+          return [x]*n
 
 
-       def print_capitalized(x: S) -> S:
-           """Print x capitalized, and return x."""
-           print(x.capitalize())
-           return x
+      def print_capitalized[S: str](x: S) -> S:
+          """Print x capitalized, and return x."""
+          print(x.capitalize())
+          return x
 
 
-       def concatenate(x: A, y: A) -> A:
-           """Add two strings or bytes objects together."""
-           return x + y
+      def concatenate[A: (str, bytes)](x: A, y: A) -> A:
+          """Add two strings or bytes objects together."""
+          return x + y
 
-    Note that type variables can be *bound*, *constrained*, or neither, but
-    cannot be both bound *and* constrained.
+   Note that type variables can be *bound*, *constrained*, or neither, but
+   cannot be both bound *and* constrained.
 
-    Bound type variables and constrained type variables have different
-    semantics in several important ways. Using a *bound* type variable means
-    that the ``TypeVar`` will be solved using the most specific type possible::
+   The variance of type variables is inferred by type checkers when they are created
+   through the :ref:`type parameter syntax <type-params>` or when
+   ``infer_variance=True`` is passed.
+   Manually created type variables may be explicitly marked covariant or contravariant by passing
+   ``covariant=True`` or ``contravariant=True``.
+   By default, manually created type variables are invariant.
+   See :pep:`484` and :pep:`695` for more details.
 
-       x = print_capitalized('a string')
-       reveal_type(x)  # revealed type is str
+   Bound type variables and constrained type variables have different
+   semantics in several important ways. Using a *bound* type variable means
+   that the ``TypeVar`` will be solved using the most specific type possible::
 
-       class StringSubclass(str):
-           pass
+      x = print_capitalized('a string')
+      reveal_type(x)  # revealed type is str
 
-       y = print_capitalized(StringSubclass('another string'))
-       reveal_type(y)  # revealed type is StringSubclass
+      class StringSubclass(str):
+          pass
 
-       z = print_capitalized(45)  # error: int is not a subtype of str
+      y = print_capitalized(StringSubclass('another string'))
+      reveal_type(y)  # revealed type is StringSubclass
 
-    Type variables can be bound to concrete types, abstract types (ABCs or
-    protocols), and even unions of types::
+      z = print_capitalized(45)  # error: int is not a subtype of str
 
-       U = TypeVar('U', bound=str|bytes)  # Can be any subtype of the union str|bytes
-       V = TypeVar('V', bound=SupportsAbs)  # Can be anything with an __abs__ method
+   Type variables can be bound to concrete types, abstract types (ABCs or
+   protocols), and even unions of types::
 
-.. _typing-constrained-typevar:
+      # Can be anything with an __abs__ method
+      def print_abs[T: SupportsAbs](arg: T) -> None:
+          print("Absolute value:", abs(arg))
 
-    Using a *constrained* type variable, however, means that the ``TypeVar``
-    can only ever be solved as being exactly one of the constraints given::
+      U = TypeVar('U', bound=str|bytes)  # Can be any subtype of the union str|bytes
+      V = TypeVar('V', bound=SupportsAbs)  # Can be anything with an __abs__ method
 
-       a = concatenate('one', 'two')
-       reveal_type(a)  # revealed type is str
+   .. _typing-constrained-typevar:
 
-       b = concatenate(StringSubclass('one'), StringSubclass('two'))
-       reveal_type(b)  # revealed type is str, despite StringSubclass being passed in
+   Using a *constrained* type variable, however, means that the ``TypeVar``
+   can only ever be solved as being exactly one of the constraints given::
 
-       c = concatenate('one', b'two')  # error: type variable 'A' can be either str or bytes in a function call, but not both
+      a = concatenate('one', 'two')
+      reveal_type(a)  # revealed type is str
 
-    At runtime, ``isinstance(x, T)`` will raise :exc:`TypeError`.  In general,
-    :func:`isinstance` and :func:`issubclass` should not be used with types.
+      b = concatenate(StringSubclass('one'), StringSubclass('two'))
+      reveal_type(b)  # revealed type is str, despite StringSubclass being passed in
 
-    Type variables may be marked covariant or contravariant by passing
-    ``covariant=True`` or ``contravariant=True``.  See :pep:`484` for more
-    details.  By default, type variables are invariant.
+      c = concatenate('one', b'two')  # error: type variable 'A' can be either str or bytes in a function call, but not both
 
-.. class:: TypeVarTuple
+   At runtime, ``isinstance(x, T)`` will raise :exc:`TypeError`.
 
-    Type variable tuple. A specialized form of :class:`type variable <TypeVar>`
-    that enables *variadic* generics.
+   .. attribute:: __name__
 
-    A normal type variable enables parameterization with a single type. A type
-    variable tuple, in contrast, allows parameterization with an
-    *arbitrary* number of types by acting like an *arbitrary* number of type
-    variables wrapped in a tuple. For example::
+      The name of the type variable.
 
-        T = TypeVar('T')
-        Ts = TypeVarTuple('Ts')
+   .. attribute:: __covariant__
 
-        def move_first_element_to_last(tup: tuple[T, *Ts]) -> tuple[*Ts, T]:
-            return (*tup[1:], tup[0])
+      Whether the type var has been explicitly marked as covariant.
 
-        # T is bound to int, Ts is bound to ()
-        # Return value is (1,), which has type tuple[int]
-        move_first_element_to_last(tup=(1,))
+   .. attribute:: __contravariant__
 
-        # T is bound to int, Ts is bound to (str,)
-        # Return value is ('spam', 1), which has type tuple[str, int]
-        move_first_element_to_last(tup=(1, 'spam'))
+      Whether the type var has been explicitly marked as contravariant.
 
-        # T is bound to int, Ts is bound to (str, float)
-        # Return value is ('spam', 3.0, 1), which has type tuple[str, float, int]
-        move_first_element_to_last(tup=(1, 'spam', 3.0))
+   .. attribute:: __infer_variance__
 
-        # This fails to type check (and fails at runtime)
-        # because tuple[()] is not compatible with tuple[T, *Ts]
-        # (at least one element is required)
-        move_first_element_to_last(tup=())
+      Whether the type variable's variance should be inferred by type checkers.
 
-    Note the use of the unpacking operator ``*`` in ``tuple[T, *Ts]``.
-    Conceptually, you can think of ``Ts`` as a tuple of type variables
-    ``(T1, T2, ...)``. ``tuple[T, *Ts]`` would then become
-    ``tuple[T, *(T1, T2, ...)]``, which is equivalent to
-    ``tuple[T, T1, T2, ...]``. (Note that in older versions of Python, you might
-    see this written using :data:`Unpack <Unpack>` instead, as
-    ``Unpack[Ts]``.)
+      .. versionadded:: 3.12
 
-    Type variable tuples must *always* be unpacked. This helps distinguish type
-    variable tuples from normal type variables::
+   .. attribute:: __bound__
 
-        x: Ts          # Not valid
-        x: tuple[Ts]   # Not valid
-        x: tuple[*Ts]  # The correct way to do it
+      The bound of the type variable, if any.
 
-    Type variable tuples can be used in the same contexts as normal type
-    variables. For example, in class definitions, arguments, and return types::
+      .. versionchanged:: 3.12
 
-        Shape = TypeVarTuple('Shape')
-        class Array(Generic[*Shape]):
-            def __getitem__(self, key: tuple[*Shape]) -> float: ...
-            def __abs__(self) -> "Array[*Shape]": ...
-            def get_shape(self) -> tuple[*Shape]: ...
+         For type variables created through :ref:`type parameter syntax <type-params>`,
+         the bound is evaluated only when the attribute is accessed, not when
+         the type variable is created (see :ref:`lazy-evaluation`).
 
-    Type variable tuples can be happily combined with normal type variables::
+   .. attribute:: __constraints__
 
-        DType = TypeVar('DType')
+      A tuple containing the constraints of the type variable, if any.
 
-        class Array(Generic[DType, *Shape]):  # This is fine
-            pass
+      .. versionchanged:: 3.12
 
-        class Array2(Generic[*Shape, DType]):  # This would also be fine
-            pass
+         For type variables created through :ref:`type parameter syntax <type-params>`,
+         the constraints are evaluated only when the attribute is accessed, not when
+         the type variable is created (see :ref:`lazy-evaluation`).
 
-        float_array_1d: Array[float, Height] = Array()     # Totally fine
-        int_array_2d: Array[int, Height, Width] = Array()  # Yup, fine too
+   .. versionchanged:: 3.12
 
-    However, note that at most one type variable tuple may appear in a single
-    list of type arguments or type parameters::
+      Type variables can now be declared using the
+      :ref:`type parameter <type-params>` syntax introduced by :pep:`695`.
+      The ``infer_variance`` parameter was added.
 
-        x: tuple[*Ts, *Ts]                     # Not valid
-        class Array(Generic[*Shape, *Shape]):  # Not valid
-            pass
+.. _typevartuple:
 
-    Finally, an unpacked type variable tuple can be used as the type annotation
-    of ``*args``::
+.. class:: TypeVarTuple(name)
 
-        def call_soon(
-                callback: Callable[[*Ts], None],
-                *args: *Ts
-        ) -> None:
-            ...
-            callback(*args)
+   Type variable tuple. A specialized form of :ref:`type variable <typevar>`
+   that enables *variadic* generics.
 
-    In contrast to non-unpacked annotations of ``*args`` - e.g. ``*args: int``,
-    which would specify that *all* arguments are ``int`` - ``*args: *Ts``
-    enables reference to the types of the *individual* arguments in ``*args``.
-    Here, this allows us to ensure the types of the ``*args`` passed
-    to ``call_soon`` match the types of the (positional) arguments of
-    ``callback``.
+   Type variable tuples can be declared in :ref:`type parameter lists <type-params>`
+   using a single asterisk (``*``) before the name::
 
-    See :pep:`646` for more details on type variable tuples.
+      def move_first_element_to_last[T, *Ts](tup: tuple[T, *Ts]) -> tuple[*Ts, T]:
+          return (*tup[1:], tup[0])
 
-    .. versionadded:: 3.11
+   Or by explicitly invoking the ``TypeVarTuple`` constructor::
 
-.. data:: Unpack
+      T = TypeVar("T")
+      Ts = TypeVarTuple("Ts")
 
-   A typing operator that conceptually marks an object as having been
-   unpacked. For example, using the unpack operator ``*`` on a
-   :class:`type variable tuple <TypeVarTuple>` is equivalent to using ``Unpack``
-   to mark the type variable tuple as having been unpacked::
+      def move_first_element_to_last(tup: tuple[T, *Ts]) -> tuple[*Ts, T]:
+          return (*tup[1:], tup[0])
 
-      Ts = TypeVarTuple('Ts')
-      tup: tuple[*Ts]
-      # Effectively does:
-      tup: tuple[Unpack[Ts]]
+   A normal type variable enables parameterization with a single type. A type
+   variable tuple, in contrast, allows parameterization with an
+   *arbitrary* number of types by acting like an *arbitrary* number of type
+   variables wrapped in a tuple. For example::
 
-   In fact, ``Unpack`` can be used interchangeably with ``*`` in the context
-   of :class:`typing.TypeVarTuple <TypeVarTuple>` and
-   :class:`builtins.tuple <tuple>` types. You might see ``Unpack`` being used
-   explicitly in older versions of Python, where ``*`` couldn't be used in
-   certain places::
+      # T is bound to int, Ts is bound to ()
+      # Return value is (1,), which has type tuple[int]
+      move_first_element_to_last(tup=(1,))
 
-      # In older versions of Python, TypeVarTuple and Unpack
-      # are located in the `typing_extensions` backports package.
-      from typing_extensions import TypeVarTuple, Unpack
+      # T is bound to int, Ts is bound to (str,)
+      # Return value is ('spam', 1), which has type tuple[str, int]
+      move_first_element_to_last(tup=(1, 'spam'))
 
-      Ts = TypeVarTuple('Ts')
-      tup: tuple[*Ts]         # Syntax error on Python <= 3.10!
-      tup: tuple[Unpack[Ts]]  # Semantically equivalent, and backwards-compatible
+      # T is bound to int, Ts is bound to (str, float)
+      # Return value is ('spam', 3.0, 1), which has type tuple[str, float, int]
+      move_first_element_to_last(tup=(1, 'spam', 3.0))
 
-   ``Unpack`` can also be used along with :class:`typing.TypedDict` for typing
-   ``**kwargs`` in a function signature::
+      # This fails to type check (and fails at runtime)
+      # because tuple[()] is not compatible with tuple[T, *Ts]
+      # (at least one element is required)
+      move_first_element_to_last(tup=())
 
-      from typing import TypedDict, Unpack
+   Note the use of the unpacking operator ``*`` in ``tuple[T, *Ts]``.
+   Conceptually, you can think of ``Ts`` as a tuple of type variables
+   ``(T1, T2, ...)``. ``tuple[T, *Ts]`` would then become
+   ``tuple[T, *(T1, T2, ...)]``, which is equivalent to
+   ``tuple[T, T1, T2, ...]``. (Note that in older versions of Python, you might
+   see this written using :data:`Unpack <Unpack>` instead, as
+   ``Unpack[Ts]``.)
 
-      class Movie(TypedDict):
-         name: str
-         year: int
+   Type variable tuples must *always* be unpacked. This helps distinguish type
+   variable tuples from normal type variables::
 
-      # This function expects two keyword arguments - `name` of type `str`
-      # and `year` of type `int`.
-      def foo(**kwargs: Unpack[Movie]): ...
+      x: Ts          # Not valid
+      x: tuple[Ts]   # Not valid
+      x: tuple[*Ts]  # The correct way to do it
 
-   See :pep:`692` for more details on using ``Unpack`` for ``**kwargs`` typing.
+   Type variable tuples can be used in the same contexts as normal type
+   variables. For example, in class definitions, arguments, and return types::
+
+      class Array[*Shape]:
+          def __getitem__(self, key: tuple[*Shape]) -> float: ...
+          def __abs__(self) -> "Array[*Shape]": ...
+          def get_shape(self) -> tuple[*Shape]: ...
+
+   Type variable tuples can be happily combined with normal type variables:
+
+   .. testcode::
+
+      class Array[DType, *Shape]:  # This is fine
+          pass
+
+      class Array2[*Shape, DType]:  # This would also be fine
+          pass
+
+      class Height: ...
+      class Width: ...
+
+      float_array_1d: Array[float, Height] = Array()     # Totally fine
+      int_array_2d: Array[int, Height, Width] = Array()  # Yup, fine too
+
+   However, note that at most one type variable tuple may appear in a single
+   list of type arguments or type parameters::
+
+      x: tuple[*Ts, *Ts]            # Not valid
+      class Array[*Shape, *Shape]:  # Not valid
+          pass
+
+   Finally, an unpacked type variable tuple can be used as the type annotation
+   of ``*args``::
+
+      def call_soon[*Ts](
+               callback: Callable[[*Ts], None],
+               *args: *Ts
+      ) -> None:
+          ...
+          callback(*args)
+
+   In contrast to non-unpacked annotations of ``*args`` - e.g. ``*args: int``,
+   which would specify that *all* arguments are ``int`` - ``*args: *Ts``
+   enables reference to the types of the *individual* arguments in ``*args``.
+   Here, this allows us to ensure the types of the ``*args`` passed
+   to ``call_soon`` match the types of the (positional) arguments of
+   ``callback``.
+
+   See :pep:`646` for more details on type variable tuples.
+
+   .. attribute:: __name__
+
+      The name of the type variable tuple.
 
    .. versionadded:: 3.11
 
+   .. versionchanged:: 3.12
+
+      Type variable tuples can now be declared using the
+      :ref:`type parameter <type-params>` syntax introduced by :pep:`695`.
+
 .. class:: ParamSpec(name, *, bound=None, covariant=False, contravariant=False)
 
    Parameter specification variable.  A specialized version of
-   :class:`type variables <TypeVar>`.
+   :ref:`type variables <typevar>`.
 
-   Usage::
+   In :ref:`type parameter lists <type-params>`, parameter specifications
+   can be declared with two asterisks (``**``)::
+
+      type IntFunc[**P] = Callable[P, int]
+
+   For compatibility with Python 3.11 and earlier, ``ParamSpec`` objects
+   can also be created as follows::
 
       P = ParamSpec('P')
 
@@ -1474,13 +1874,9 @@ These are not used in annotations. They are building blocks for creating generic
    new callable returned by it have inter-dependent type parameters::
 
       from collections.abc import Callable
-      from typing import TypeVar, ParamSpec
       import logging
 
-      T = TypeVar('T')
-      P = ParamSpec('P')
-
-      def add_logging(f: Callable[P, T]) -> Callable[P, T]:
+      def add_logging[T, **P](f: Callable[P, T]) -> Callable[P, T]:
           '''A type-safe decorator to add logging to a function.'''
           def inner(*args: P.args, **kwargs: P.kwargs) -> T:
               logging.info(f'{f.__name__} was called')
@@ -1515,6 +1911,10 @@ These are not used in annotations. They are building blocks for creating generic
       ``P.args`` and ``P.kwargs`` are instances respectively of
       :class:`ParamSpecArgs` and :class:`ParamSpecKwargs`.
 
+   .. attribute:: __name__
+
+      The name of the parameter specification.
+
    Parameter specification variables created with ``covariant=True`` or
    ``contravariant=True`` can be used to declare covariant or contravariant
    generic types.  The ``bound`` argument is also accepted, similar to
@@ -1523,14 +1923,20 @@ These are not used in annotations. They are building blocks for creating generic
 
    .. versionadded:: 3.10
 
+   .. versionchanged:: 3.12
+
+      Parameter specifications can now be declared using the
+      :ref:`type parameter <type-params>` syntax introduced by :pep:`695`.
+
    .. note::
       Only parameter specification variables defined in global scope can
       be pickled.
 
    .. seealso::
       * :pep:`612` -- Parameter Specification Variables (the PEP which introduced
-        ``ParamSpec`` and ``Concatenate``).
-      * :class:`Callable` and :class:`Concatenate`.
+        ``ParamSpec`` and ``Concatenate``)
+      * :data:`Concatenate`
+      * :ref:`annotating-callables`
 
 .. data:: ParamSpecArgs
 .. data:: ParamSpecKwargs
@@ -1541,128 +1947,91 @@ These are not used in annotations. They are building blocks for creating generic
    for runtime introspection and have no special meaning to static type checkers.
 
    Calling :func:`get_origin` on either of these objects will return the
-   original ``ParamSpec``::
-
-      P = ParamSpec("P")
-      get_origin(P.args)  # returns P
-      get_origin(P.kwargs)  # returns P
-
-   .. versionadded:: 3.10
-
-
-.. data:: AnyStr
-
-   ``AnyStr`` is a :ref:`constrained type variable <typing-constrained-typevar>` defined as
-   ``AnyStr = TypeVar('AnyStr', str, bytes)``.
-
-   It is meant to be used for functions that may accept any kind of string
-   without allowing different kinds of strings to mix. For example::
-
-      def concat(a: AnyStr, b: AnyStr) -> AnyStr:
-          return a + b
-
-      concat(u"foo", u"bar")  # Ok, output has type 'unicode'
-      concat(b"foo", b"bar")  # Ok, output has type 'bytes'
-      concat(u"foo", b"bar")  # Error, cannot mix unicode and bytes
-
-.. class:: Protocol(Generic)
+   original ``ParamSpec``:
 
-   Base class for protocol classes. Protocol classes are defined like this::
+   .. doctest::
 
-      class Proto(Protocol):
-          def meth(self) -> int:
-              ...
+      >>> from typing import ParamSpec, get_origin
+      >>> P = ParamSpec("P")
+      >>> get_origin(P.args) is P
+      True
+      >>> get_origin(P.kwargs) is P
+      True
 
-   Such classes are primarily used with static type checkers that recognize
-   structural subtyping (static duck-typing), for example::
+   .. versionadded:: 3.10
 
-      class C:
-          def meth(self) -> int:
-              return 0
 
-      def func(x: Proto) -> int:
-          return x.meth()
+.. class:: TypeAliasType(name, value, *, type_params=())
 
-      func(C())  # Passes static type check
+   The type of type aliases created through the :keyword:`type` statement.
 
-   See :pep:`544` for more details. Protocol classes decorated with
-   :func:`runtime_checkable` (described later) act as simple-minded runtime
-   protocols that check only the presence of given attributes, ignoring their
-   type signatures.
+   Example:
 
-   Protocol classes can be generic, for example::
+   .. doctest::
 
-      class GenProto(Protocol[T]):
-          def meth(self) -> T:
-              ...
+      >>> type Alias = int
+      >>> type(Alias)
+      <class 'typing.TypeAliasType'>
 
-   .. versionadded:: 3.8
+   .. versionadded:: 3.12
 
-.. decorator:: runtime_checkable
+   .. attribute:: __name__
 
-   Mark a protocol class as a runtime protocol.
+      The name of the type alias:
 
-   Such a protocol can be used with :func:`isinstance` and :func:`issubclass`.
-   This raises :exc:`TypeError` when applied to a non-protocol class.  This
-   allows a simple-minded structural check, very similar to "one trick ponies"
-   in :mod:`collections.abc` such as :class:`~collections.abc.Iterable`.  For example::
+      .. doctest::
 
-      @runtime_checkable
-      class Closable(Protocol):
-          def close(self): ...
+         >>> type Alias = int
+         >>> Alias.__name__
+         'Alias'
 
-      assert isinstance(open('/some/file'), Closable)
+   .. attribute:: __module__
 
-      @runtime_checkable
-      class Named(Protocol):
-          name: str
+      The module in which the type alias was defined::
 
-      import threading
-      assert isinstance(threading.Thread(name='Bob'), Named)
+         >>> type Alias = int
+         >>> Alias.__module__
+         '__main__'
 
-   .. note::
+   .. attribute:: __type_params__
 
-        :func:`!runtime_checkable` will check only the presence of the required
-        methods or attributes, not their type signatures or types.
-        For example, :class:`ssl.SSLObject`
-        is a class, therefore it passes an :func:`issubclass`
-        check against :data:`Callable`.  However, the
-        ``ssl.SSLObject.__init__`` method exists only to raise a
-        :exc:`TypeError` with a more informative message, therefore making
-        it impossible to call (instantiate) :class:`ssl.SSLObject`.
+      The type parameters of the type alias, or an empty tuple if the alias is
+      not generic:
 
-   .. note::
+      .. doctest::
 
-        An :func:`isinstance` check against a runtime-checkable protocol can be
-        surprisingly slow compared to an ``isinstance()`` check against
-        a non-protocol class. Consider using alternative idioms such as
-        :func:`hasattr` calls for structural checks in performance-sensitive
-        code.
+         >>> type ListOrSet[T] = list[T] | set[T]
+         >>> ListOrSet.__type_params__
+         (T,)
+         >>> type NotGeneric = int
+         >>> NotGeneric.__type_params__
+         ()
 
-   .. versionadded:: 3.8
+   .. attribute:: __value__
 
-   .. versionchanged:: 3.12
-      The internal implementation of :func:`isinstance` checks against
-      runtime-checkable protocols now uses :func:`inspect.getattr_static`
-      to look up attributes (previously, :func:`hasattr` was used).
-      As a result, some objects which used to be considered instances
-      of a runtime-checkable protocol may no longer be considered instances
-      of that protocol on Python 3.12+, and vice versa.
-      Most users are unlikely to be affected by this change.
+      The type alias's value. This is :ref:`lazily evaluated <lazy-evaluation>`,
+      so names used in the definition of the alias are not resolved until the
+      ``__value__`` attribute is accessed:
 
-   .. versionchanged:: 3.12
-      The members of a runtime-checkable protocol are now considered "frozen"
-      at runtime as soon as the class has been created. Monkey-patching
-      attributes onto a runtime-checkable protocol will still work, but will
-      have no impact on :func:`isinstance` checks comparing objects to the
-      protocol. See :ref:`"What's new in Python 3.12" <whatsnew-typing-py312>`
-      for more details.
+      .. doctest::
 
+         >>> type Mutually = Recursive
+         >>> type Recursive = Mutually
+         >>> Mutually
+         Mutually
+         >>> Recursive
+         Recursive
+         >>> Mutually.__value__
+         Recursive
+         >>> Recursive.__value__
+         Mutually
 
 Other special directives
 """"""""""""""""""""""""
 
-These are not used in annotations. They are building blocks for declaring types.
+These functions and classes should not be used directly as annotations.
+Their intended purpose is to be building blocks for creating and declaring
+types.
 
 .. class:: NamedTuple
 
@@ -1707,12 +2076,18 @@ These are not used in annotations. They are building blocks for declaring types.
 
    ``NamedTuple`` subclasses can be generic::
 
-      class Group(NamedTuple, Generic[T]):
+      class Group[T](NamedTuple):
           key: T
           group: list[T]
 
    Backward-compatible usage::
 
+       # For creating a generic NamedTuple on Python 3.11 or lower
+       class Group(NamedTuple, Generic[T]):
+           key: T
+           group: list[T]
+
+       # A functional syntax is also supported
        Employee = NamedTuple('Employee', [('name', str), ('id', int)])
 
    .. versionchanged:: 3.6
@@ -1732,80 +2107,201 @@ These are not used in annotations. They are building blocks for declaring types.
    .. versionchanged:: 3.11
       Added support for generic namedtuples.
 
+   .. deprecated-removed:: 3.13 3.15
+      The undocumented keyword argument syntax for creating NamedTuple classes
+      (``NT = NamedTuple("NT", x=int)``) is deprecated, and will be disallowed
+      in 3.15. Use the class-based syntax or the functional syntax instead.
+
+   .. deprecated-removed:: 3.13 3.15
+      When using the functional syntax to create a NamedTuple class, failing to
+      pass a value to the 'fields' parameter (``NT = NamedTuple("NT")``) is
+      deprecated. Passing ``None`` to the 'fields' parameter
+      (``NT = NamedTuple("NT", None)``) is also deprecated. Both will be
+      disallowed in Python 3.15. To create a NamedTuple class with 0 fields,
+      use ``class NT(NamedTuple): pass`` or ``NT = NamedTuple("NT", [])``.
+
 .. class:: NewType(name, tp)
 
-   A helper class to indicate a distinct type to a typechecker,
-   see :ref:`distinct`. At runtime it returns an object that returns
-   its argument when called.
+   Helper class to create low-overhead :ref:`distinct types <distinct>`.
+
+   A ``NewType`` is considered a distinct type by a typechecker. At runtime,
+   however, calling a ``NewType`` returns its argument unchanged.
+
    Usage::
 
-      UserId = NewType('UserId', int)
-      first_user = UserId(1)
+      UserId = NewType('UserId', int)  # Declare the NewType "UserId"
+      first_user = UserId(1)  # "UserId" returns the argument unchanged at runtime
+
+   .. attribute:: __module__
+
+      The module in which the new type is defined.
+
+   .. attribute:: __name__
+
+      The name of the new type.
+
+   .. attribute:: __supertype__
+
+      The type that the new type is based on.
 
    .. versionadded:: 3.5.2
 
    .. versionchanged:: 3.10
       ``NewType`` is now a class rather than a function.
 
-.. class:: TypedDict(dict)
+.. class:: Protocol(Generic)
 
-   Special construct to add type hints to a dictionary.
-   At runtime it is a plain :class:`dict`.
+   Base class for protocol classes.
 
-   ``TypedDict`` declares a dictionary type that expects all of its
-   instances to have a certain set of keys, where each key is
-   associated with a value of a consistent type. This expectation
-   is not checked at runtime but is only enforced by type checkers.
-   Usage::
+   Protocol classes are defined like this::
 
-      class Point2D(TypedDict):
-          x: int
-          y: int
-          label: str
+      class Proto(Protocol):
+          def meth(self) -> int:
+              ...
 
-      a: Point2D = {'x': 1, 'y': 2, 'label': 'good'}  # OK
-      b: Point2D = {'z': 3, 'label': 'bad'}           # Fails type check
+   Such classes are primarily used with static type checkers that recognize
+   structural subtyping (static duck-typing), for example::
 
-      assert Point2D(x=1, y=2, label='first') == dict(x=1, y=2, label='first')
+      class C:
+          def meth(self) -> int:
+              return 0
 
-   To allow using this feature with older versions of Python that do not
-   support :pep:`526`, ``TypedDict`` supports two additional equivalent
-   syntactic forms:
+      def func(x: Proto) -> int:
+          return x.meth()
 
-   * Using a literal :class:`dict` as the second argument::
+      func(C())  # Passes static type check
 
-      Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': str})
+   See :pep:`544` for more details. Protocol classes decorated with
+   :func:`runtime_checkable` (described later) act as simple-minded runtime
+   protocols that check only the presence of given attributes, ignoring their
+   type signatures.
 
-   * Using keyword arguments::
+   Protocol classes can be generic, for example::
 
-      Point2D = TypedDict('Point2D', x=int, y=int, label=str)
+      class GenProto[T](Protocol):
+          def meth(self) -> T:
+              ...
 
-   .. deprecated-removed:: 3.11 3.13
-      The keyword-argument syntax is deprecated in 3.11 and will be removed
-      in 3.13. It may also be unsupported by static type checkers.
+   In code that needs to be compatible with Python 3.11 or older, generic
+   Protocols can be written as follows::
 
-   The functional syntax should also be used when any of the keys are not valid
-   :ref:`identifiers <identifiers>`, for example because they are keywords or contain hyphens.
-   Example::
+      T = TypeVar("T")
 
-      # raises SyntaxError
-      class Point2D(TypedDict):
-          in: int  # 'in' is a keyword
-          x-y: int  # name with hyphens
+      class GenProto(Protocol[T]):
+          def meth(self) -> T:
+              ...
 
-      # OK, functional syntax
-      Point2D = TypedDict('Point2D', {'in': int, 'x-y': int})
+   .. versionadded:: 3.8
 
-   By default, all keys must be present in a ``TypedDict``. It is possible to
-   mark individual keys as non-required using :data:`NotRequired`::
+.. decorator:: runtime_checkable
 
-      class Point2D(TypedDict):
-          x: int
-          y: int
-          label: NotRequired[str]
+   Mark a protocol class as a runtime protocol.
 
-      # Alternative syntax
-      Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': NotRequired[str]})
+   Such a protocol can be used with :func:`isinstance` and :func:`issubclass`.
+   This raises :exc:`TypeError` when applied to a non-protocol class.  This
+   allows a simple-minded structural check, very similar to "one trick ponies"
+   in :mod:`collections.abc` such as :class:`~collections.abc.Iterable`.  For example::
+
+      @runtime_checkable
+      class Closable(Protocol):
+          def close(self): ...
+
+      assert isinstance(open('/some/file'), Closable)
+
+      @runtime_checkable
+      class Named(Protocol):
+          name: str
+
+      import threading
+      assert isinstance(threading.Thread(name='Bob'), Named)
+
+   .. note::
+
+        :func:`!runtime_checkable` will check only the presence of the required
+        methods or attributes, not their type signatures or types.
+        For example, :class:`ssl.SSLObject`
+        is a class, therefore it passes an :func:`issubclass`
+        check against :ref:`Callable <annotating-callables>`. However, the
+        ``ssl.SSLObject.__init__`` method exists only to raise a
+        :exc:`TypeError` with a more informative message, therefore making
+        it impossible to call (instantiate) :class:`ssl.SSLObject`.
+
+   .. note::
+
+        An :func:`isinstance` check against a runtime-checkable protocol can be
+        surprisingly slow compared to an ``isinstance()`` check against
+        a non-protocol class. Consider using alternative idioms such as
+        :func:`hasattr` calls for structural checks in performance-sensitive
+        code.
+
+   .. versionadded:: 3.8
+
+   .. versionchanged:: 3.12
+      The internal implementation of :func:`isinstance` checks against
+      runtime-checkable protocols now uses :func:`inspect.getattr_static`
+      to look up attributes (previously, :func:`hasattr` was used).
+      As a result, some objects which used to be considered instances
+      of a runtime-checkable protocol may no longer be considered instances
+      of that protocol on Python 3.12+, and vice versa.
+      Most users are unlikely to be affected by this change.
+
+   .. versionchanged:: 3.12
+      The members of a runtime-checkable protocol are now considered "frozen"
+      at runtime as soon as the class has been created. Monkey-patching
+      attributes onto a runtime-checkable protocol will still work, but will
+      have no impact on :func:`isinstance` checks comparing objects to the
+      protocol. See :ref:`"What's new in Python 3.12" <whatsnew-typing-py312>`
+      for more details.
+
+
+.. class:: TypedDict(dict)
+
+   Special construct to add type hints to a dictionary.
+   At runtime it is a plain :class:`dict`.
+
+   ``TypedDict`` declares a dictionary type that expects all of its
+   instances to have a certain set of keys, where each key is
+   associated with a value of a consistent type. This expectation
+   is not checked at runtime but is only enforced by type checkers.
+   Usage::
+
+      class Point2D(TypedDict):
+          x: int
+          y: int
+          label: str
+
+      a: Point2D = {'x': 1, 'y': 2, 'label': 'good'}  # OK
+      b: Point2D = {'z': 3, 'label': 'bad'}           # Fails type check
+
+      assert Point2D(x=1, y=2, label='first') == dict(x=1, y=2, label='first')
+
+   An alternative way to create a ``TypedDict`` is by using
+   function-call syntax. The second argument must be a literal :class:`dict`::
+
+      Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': str})
+
+   This functional syntax allows defining keys which are not valid
+   :ref:`identifiers <identifiers>`, for example because they are
+   keywords or contain hyphens::
+
+      # raises SyntaxError
+      class Point2D(TypedDict):
+          in: int  # 'in' is a keyword
+          x-y: int  # name with hyphens
+
+      # OK, functional syntax
+      Point2D = TypedDict('Point2D', {'in': int, 'x-y': int})
+
+   By default, all keys must be present in a ``TypedDict``. It is possible to
+   mark individual keys as non-required using :data:`NotRequired`::
+
+      class Point2D(TypedDict):
+          x: int
+          y: int
+          label: NotRequired[str]
+
+      # Alternative syntax
+      Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': NotRequired[str]})
 
    This means that a ``Point2D`` ``TypedDict`` can have the ``label``
    key omitted.
@@ -1870,11 +2366,19 @@ These are not used in annotations. They are building blocks for declaring types.
 
       class XZ(X, Z): pass  # raises TypeError
 
-      T = TypeVar('T')
-      class XT(X, Generic[T]): pass  # raises TypeError
-
    A ``TypedDict`` can be generic::
 
+      class Group[T](TypedDict):
+          key: T
+          group: list[T]
+
+   To create a generic ``TypedDict`` that is compatible with Python 3.11
+   or lower, inherit from :class:`Generic` explicitly:
+
+   .. testcode::
+
+      T = TypeVar("T")
+
       class Group(TypedDict, Generic[T]):
           key: T
           group: list[T]
@@ -1886,7 +2390,9 @@ These are not used in annotations. They are building blocks for declaring types.
    .. attribute:: __total__
 
       ``Point2D.__total__`` gives the value of the ``total`` argument.
-      Example::
+      Example:
+
+      .. doctest::
 
          >>> from typing import TypedDict
          >>> class Point2D(TypedDict): pass
@@ -1899,6 +2405,13 @@ These are not used in annotations. They are building blocks for declaring types.
          >>> Point3D.__total__
          True
 
+      This attribute reflects *only* the value of the ``total`` argument
+      to the current ``TypedDict`` class, not whether the class is semantically
+      total. For example, a ``TypedDict`` with ``__total__`` set to True may
+      have keys marked with :data:`NotRequired`, or it may inherit from another
+      ``TypedDict`` with ``total=False``. Therefore, it is generally better to use
+      :attr:`__required_keys__` and :attr:`__optional_keys__` for introspection.
+
    .. attribute:: __required_keys__
 
       .. versionadded:: 3.9
@@ -1916,7 +2429,9 @@ These are not used in annotations. They are building blocks for declaring types.
       non-required keys in the same ``TypedDict`` . This is done by declaring a
       ``TypedDict`` with one value for the ``total`` argument and then
       inheriting from it in another ``TypedDict`` with a different value for
-      ``total``::
+      ``total``:
+
+      .. doctest::
 
          >>> class Point2D(TypedDict, total=False):
          ...     x: int
@@ -1932,6 +2447,14 @@ These are not used in annotations. They are building blocks for declaring types.
 
       .. versionadded:: 3.9
 
+      .. note::
+
+         If ``from __future__ import annotations`` is used or if annotations
+         are given as strings, annotations are not evaluated when the
+         ``TypedDict`` is defined. Therefore, the runtime introspection that
+         ``__required_keys__`` and ``__optional_keys__`` rely on may not work
+         properly, and the values of the attributes may be incorrect.
+
    See :pep:`589` for more examples and detailed rules of using ``TypedDict``.
 
    .. versionadded:: 3.8
@@ -1943,1034 +2466,1241 @@ These are not used in annotations. They are building blocks for declaring types.
    .. versionchanged:: 3.11
       Added support for generic ``TypedDict``\ s.
 
-Generic concrete collections
-----------------------------
+   .. versionchanged:: 3.13
+      Removed support for the keyword-argument method of creating ``TypedDict``\ s.
 
-Corresponding to built-in types
-"""""""""""""""""""""""""""""""
-
-.. class:: Dict(dict, MutableMapping[KT, VT])
+   .. deprecated-removed:: 3.13 3.15
+      When using the functional syntax to create a TypedDict class, failing to
+      pass a value to the 'fields' parameter (``TD = TypedDict("TD")``) is
+      deprecated. Passing ``None`` to the 'fields' parameter
+      (``TD = TypedDict("TD", None)``) is also deprecated. Both will be
+      disallowed in Python 3.15. To create a TypedDict class with 0 fields,
+      use ``class TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
 
-   A generic version of :class:`dict`.
-   Useful for annotating return types. To annotate arguments it is preferred
-   to use an abstract collection type such as :class:`Mapping`.
+Protocols
+---------
 
-   This type can be used as follows::
+The following protocols are provided by the typing module. All are decorated
+with :func:`@runtime_checkable <runtime_checkable>`.
 
-      def count_words(text: str) -> Dict[str, int]:
-          ...
+.. class:: SupportsAbs
 
-   .. deprecated:: 3.9
-      :class:`builtins.dict <dict>` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+    An ABC with one abstract method ``__abs__`` that is covariant
+    in its return type.
 
-.. class:: List(list, MutableSequence[T])
+.. class:: SupportsBytes
 
-   Generic version of :class:`list`.
-   Useful for annotating return types. To annotate arguments it is preferred
-   to use an abstract collection type such as :class:`Sequence` or
-   :class:`Iterable`.
+    An ABC with one abstract method ``__bytes__``.
 
-   This type may be used as follows::
+.. class:: SupportsComplex
 
-      T = TypeVar('T', int, float)
+    An ABC with one abstract method ``__complex__``.
 
-      def vec2(x: T, y: T) -> List[T]:
-          return [x, y]
+.. class:: SupportsFloat
 
-      def keep_positives(vector: Sequence[T]) -> List[T]:
-          return [item for item in vector if item > 0]
+    An ABC with one abstract method ``__float__``.
 
-   .. deprecated:: 3.9
-      :class:`builtins.list <list>` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+.. class:: SupportsIndex
 
-.. class:: Set(set, MutableSet[T])
+    An ABC with one abstract method ``__index__``.
 
-   A generic version of :class:`builtins.set <set>`.
-   Useful for annotating return types. To annotate arguments it is preferred
-   to use an abstract collection type such as :class:`AbstractSet`.
+    .. versionadded:: 3.8
 
-   .. deprecated:: 3.9
-      :class:`builtins.set <set>` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+.. class:: SupportsInt
 
-.. class:: FrozenSet(frozenset, AbstractSet[T_co])
+    An ABC with one abstract method ``__int__``.
 
-   A generic version of :class:`builtins.frozenset <frozenset>`.
+.. class:: SupportsRound
 
-   .. deprecated:: 3.9
-      :class:`builtins.frozenset <frozenset>`
-      now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+    An ABC with one abstract method ``__round__``
+    that is covariant in its return type.
 
-.. note:: :data:`Tuple` is a special form.
+ABCs for working with IO
+------------------------
 
-Corresponding to types in :mod:`collections`
-""""""""""""""""""""""""""""""""""""""""""""
+.. class:: IO
+           TextIO
+           BinaryIO
 
-.. class:: DefaultDict(collections.defaultdict, MutableMapping[KT, VT])
+   Generic type ``IO[AnyStr]`` and its subclasses ``TextIO(IO[str])``
+   and ``BinaryIO(IO[bytes])``
+   represent the types of I/O streams such as returned by
+   :func:`open`.
 
-   A generic version of :class:`collections.defaultdict`.
+Functions and decorators
+------------------------
 
-   .. versionadded:: 3.5.2
+.. function:: cast(typ, val)
 
-   .. deprecated:: 3.9
-      :class:`collections.defaultdict` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   Cast a value to a type.
 
-.. class:: OrderedDict(collections.OrderedDict, MutableMapping[KT, VT])
+   This returns the value unchanged.  To the type checker this
+   signals that the return value has the designated type, but at
+   runtime we intentionally don't check anything (we want this
+   to be as fast as possible).
 
-   A generic version of :class:`collections.OrderedDict`.
+.. function:: assert_type(val, typ, /)
 
-   .. versionadded:: 3.7.2
+   Ask a static type checker to confirm that *val* has an inferred type of *typ*.
 
-   .. deprecated:: 3.9
-      :class:`collections.OrderedDict` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   At runtime this does nothing: it returns the first argument unchanged with no
+   checks or side effects, no matter the actual type of the argument.
 
-.. class:: ChainMap(collections.ChainMap, MutableMapping[KT, VT])
+   When a static type checker encounters a call to ``assert_type()``, it
+   emits an error if the value is not of the specified type::
 
-   A generic version of :class:`collections.ChainMap`.
+       def greet(name: str) -> None:
+           assert_type(name, str)  # OK, inferred type of `name` is `str`
+           assert_type(name, int)  # type checker error
 
-   .. versionadded:: 3.5.4
-   .. versionadded:: 3.6.1
+   This function is useful for ensuring the type checker's understanding of a
+   script is in line with the developer's intentions::
 
-   .. deprecated:: 3.9
-      :class:`collections.ChainMap` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+       def complex_function(arg: object):
+           # Do some complex type-narrowing logic,
+           # after which we hope the inferred type will be `int`
+           ...
+           # Test whether the type checker correctly understands our function
+           assert_type(arg, int)
 
-.. class:: Counter(collections.Counter, Dict[T, int])
+   .. versionadded:: 3.11
 
-   A generic version of :class:`collections.Counter`.
+.. function:: assert_never(arg, /)
 
-   .. versionadded:: 3.5.4
-   .. versionadded:: 3.6.1
+   Ask a static type checker to confirm that a line of code is unreachable.
 
-   .. deprecated:: 3.9
-      :class:`collections.Counter` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   Example::
 
-.. class:: Deque(deque, MutableSequence[T])
+       def int_or_str(arg: int | str) -> None:
+           match arg:
+               case int():
+                   print("It's an int")
+               case str():
+                   print("It's a str")
+               case _ as unreachable:
+                   assert_never(unreachable)
 
-   A generic version of :class:`collections.deque`.
+   Here, the annotations allow the type checker to infer that the
+   last case can never execute, because ``arg`` is either
+   an :class:`int` or a :class:`str`, and both options are covered by
+   earlier cases.
 
-   .. versionadded:: 3.5.4
-   .. versionadded:: 3.6.1
+   If a type checker finds that a call to ``assert_never()`` is
+   reachable, it will emit an error. For example, if the type annotation
+   for ``arg`` was instead ``int | str | float``, the type checker would
+   emit an error pointing out that ``unreachable`` is of type :class:`float`.
+   For a call to ``assert_never`` to pass type checking, the inferred type of
+   the argument passed in must be the bottom type, :data:`Never`, and nothing
+   else.
 
-   .. deprecated:: 3.9
-      :class:`collections.deque` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   At runtime, this throws an exception when called.
 
-Other concrete types
-""""""""""""""""""""
+   .. seealso::
+      `Unreachable Code and Exhaustiveness Checking
+      <https://typing.readthedocs.io/en/latest/source/unreachable.html>`__ has more
+      information about exhaustiveness checking with static typing.
 
-.. class:: IO
-           TextIO
-           BinaryIO
+   .. versionadded:: 3.11
 
-   Generic type ``IO[AnyStr]`` and its subclasses ``TextIO(IO[str])``
-   and ``BinaryIO(IO[bytes])``
-   represent the types of I/O streams such as returned by
-   :func:`open`.
+.. function:: reveal_type(obj, /)
 
-   .. deprecated-removed:: 3.8 3.13
-      The ``typing.io`` namespace is deprecated and will be removed.
-      These types should be directly imported from ``typing`` instead.
+   Reveal the inferred static type of an expression.
 
-.. class:: Pattern
-           Match
+   When a static type checker encounters a call to this function,
+   it emits a diagnostic with the type of the argument. For example::
 
-   These type aliases
-   correspond to the return types from :func:`re.compile` and
-   :func:`re.match`.  These types (and the corresponding functions)
-   are generic in ``AnyStr`` and can be made specific by writing
-   ``Pattern[str]``, ``Pattern[bytes]``, ``Match[str]``, or
-   ``Match[bytes]``.
+      x: int = 1
+      reveal_type(x)  # Revealed type is "builtins.int"
 
-   .. deprecated-removed:: 3.8 3.13
-      The ``typing.re`` namespace is deprecated and will be removed.
-      These types should be directly imported from ``typing`` instead.
+   This can be useful when you want to debug how your type checker
+   handles a particular piece of code.
 
-   .. deprecated:: 3.9
-      Classes ``Pattern`` and ``Match`` from :mod:`re` now support ``[]``.
-      See :pep:`585` and :ref:`types-genericalias`.
+   The function returns its argument unchanged, which allows using
+   it within an expression::
 
-.. class:: Text
+      x = reveal_type(1)  # Revealed type is "builtins.int"
 
-   ``Text`` is an alias for ``str``. It is provided to supply a forward
-   compatible path for Python 2 code: in Python 2, ``Text`` is an alias for
-   ``unicode``.
+   Most type checkers support ``reveal_type()`` anywhere, even if the
+   name is not imported from ``typing``. Importing the name from
+   ``typing`` allows your code to run without runtime errors and
+   communicates intent more clearly.
 
-   Use ``Text`` to indicate that a value must contain a unicode string in
-   a manner that is compatible with both Python 2 and Python 3::
+   At runtime, this function prints the runtime type of its argument to stderr
+   and returns it unchanged::
 
-       def add_unicode_checkmark(text: Text) -> Text:
-           return text + u' \u2713'
+      x = reveal_type(1)  # prints "Runtime type is int"
+      print(x)  # prints "1"
 
-   .. versionadded:: 3.5.2
+   .. versionadded:: 3.11
 
-   .. deprecated:: 3.11
-      Python 2 is no longer supported, and most type checkers also no longer
-      support type checking Python 2 code. Removal of the alias is not
-      currently planned, but users are encouraged to use
-      :class:`str` instead of ``Text``.
+.. decorator:: dataclass_transform(*, eq_default=True, order_default=False, \
+                                   kw_only_default=False, frozen_default=False, \
+                                   field_specifiers=(), **kwargs)
 
-Abstract Base Classes
----------------------
+   Decorator to mark an object as providing
+   :func:`dataclass <dataclasses.dataclass>`-like behavior.
 
-Corresponding to collections in :mod:`collections.abc`
-""""""""""""""""""""""""""""""""""""""""""""""""""""""
+   ``dataclass_transform`` may be used to
+   decorate a class, metaclass, or a function that is itself a decorator.
+   The presence of ``@dataclass_transform()`` tells a static type checker that the
+   decorated object performs runtime "magic" that
+   transforms a class in a similar way to
+   :func:`@dataclasses.dataclass <dataclasses.dataclass>`.
 
-.. class:: AbstractSet(Collection[T_co])
+   Example usage with a decorator function:
 
-   A generic version of :class:`collections.abc.Set`.
+   .. testcode::
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Set` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+      @dataclass_transform()
+      def create_model[T](cls: type[T]) -> type[T]:
+          ...
+          return cls
 
-.. class:: ByteString(Sequence[int])
+      @create_model
+      class CustomerModel:
+          id: int
+          name: str
 
-   This type represents the types :class:`bytes`, :class:`bytearray`,
-   and :class:`memoryview` of byte sequences.
+   On a base class::
 
-   .. deprecated-removed:: 3.9 3.14
-      Prefer :class:`collections.abc.Buffer`, or a union like ``bytes | bytearray | memoryview``.
+      @dataclass_transform()
+      class ModelBase: ...
 
-.. class:: Collection(Sized, Iterable[T_co], Container[T_co])
+      class CustomerModel(ModelBase):
+          id: int
+          name: str
 
-   A generic version of :class:`collections.abc.Collection`
+   On a metaclass::
 
-   .. versionadded:: 3.6.0
+      @dataclass_transform()
+      class ModelMeta(type): ...
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Collection` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+      class ModelBase(metaclass=ModelMeta): ...
 
-.. class:: Container(Generic[T_co])
+      class CustomerModel(ModelBase):
+          id: int
+          name: str
 
-   A generic version of :class:`collections.abc.Container`.
+   The ``CustomerModel`` classes defined above will
+   be treated by type checkers similarly to classes created with
+   :func:`@dataclasses.dataclass <dataclasses.dataclass>`.
+   For example, type checkers will assume these classes have
+   ``__init__`` methods that accept ``id`` and ``name``.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Container` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   The decorated class, metaclass, or function may accept the following bool
+   arguments which type checkers will assume have the same effect as they
+   would have on the
+   :func:`@dataclasses.dataclass<dataclasses.dataclass>` decorator: ``init``,
+   ``eq``, ``order``, ``unsafe_hash``, ``frozen``, ``match_args``,
+   ``kw_only``, and ``slots``. It must be possible for the value of these
+   arguments (``True`` or ``False``) to be statically evaluated.
 
-.. class:: ItemsView(MappingView, AbstractSet[tuple[KT_co, VT_co]])
+   The arguments to the ``dataclass_transform`` decorator can be used to
+   customize the default behaviors of the decorated class, metaclass, or
+   function:
 
-   A generic version of :class:`collections.abc.ItemsView`.
+   :param bool eq_default:
+       Indicates whether the ``eq`` parameter is assumed to be
+       ``True`` or ``False`` if it is omitted by the caller.
+       Defaults to ``True``.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.ItemsView` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   :param bool order_default:
+       Indicates whether the ``order`` parameter is
+       assumed to be ``True`` or ``False`` if it is omitted by the caller.
+       Defaults to ``False``.
 
-.. class:: KeysView(MappingView, AbstractSet[KT_co])
+   :param bool kw_only_default:
+       Indicates whether the ``kw_only`` parameter is
+       assumed to be ``True`` or ``False`` if it is omitted by the caller.
+       Defaults to ``False``.
 
-   A generic version of :class:`collections.abc.KeysView`.
+   :param bool frozen_default:
+       Indicates whether the ``frozen`` parameter is
+       assumed to be ``True`` or ``False`` if it is omitted by the caller.
+       Defaults to ``False``.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.KeysView` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+       .. versionadded:: 3.12
 
-.. class:: Mapping(Collection[KT], Generic[KT, VT_co])
+   :param field_specifiers:
+       Specifies a static list of supported classes
+       or functions that describe fields, similar to :func:`dataclasses.field`.
+       Defaults to ``()``.
+   :type field_specifiers: tuple[Callable[..., Any], ...]
 
-   A generic version of :class:`collections.abc.Mapping`.
-   This type can be used as follows::
+   :param Any \**kwargs:
+       Arbitrary other keyword arguments are accepted in order to allow for
+       possible future extensions.
 
-     def get_position_in_index(word_list: Mapping[str, int], word: str) -> int:
-         return word_list[word]
+   Type checkers recognize the following optional parameters on field
+   specifiers:
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Mapping` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   .. list-table:: **Recognised parameters for field specifiers**
+      :header-rows: 1
+      :widths: 20 80
+
+      * - Parameter name
+        - Description
+      * - ``init``
+        - Indicates whether the field should be included in the
+          synthesized ``__init__`` method. If unspecified, ``init`` defaults to
+          ``True``.
+      * - ``default``
+        - Provides the default value for the field.
+      * - ``default_factory``
+        - Provides a runtime callback that returns the
+          default value for the field. If neither ``default`` nor
+          ``default_factory`` are specified, the field is assumed to have no
+          default value and must be provided a value when the class is
+          instantiated.
+      * - ``factory``
+        - An alias for the ``default_factory`` parameter on field specifiers.
+      * - ``kw_only``
+        - Indicates whether the field should be marked as
+          keyword-only. If ``True``, the field will be keyword-only. If
+          ``False``, it will not be keyword-only. If unspecified, the value of
+          the ``kw_only`` parameter on the object decorated with
+          ``dataclass_transform`` will be used, or if that is unspecified, the
+          value of ``kw_only_default`` on ``dataclass_transform`` will be used.
+      * - ``alias``
+        - Provides an alternative name for the field. This alternative
+          name is used in the synthesized ``__init__`` method.
 
-.. class:: MappingView(Sized)
+   At runtime, this decorator records its arguments in the
+   ``__dataclass_transform__`` attribute on the decorated object.
+   It has no other runtime effect.
 
-   A generic version of :class:`collections.abc.MappingView`.
+   See :pep:`681` for more details.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.MappingView` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   .. versionadded:: 3.11
 
-.. class:: MutableMapping(Mapping[KT, VT])
+.. _overload:
 
-   A generic version of :class:`collections.abc.MutableMapping`.
+.. decorator:: overload
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.MutableMapping`
-      now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   Decorator for creating overloaded functions and methods.
 
-.. class:: MutableSequence(Sequence[T])
+   The ``@overload`` decorator allows describing functions and methods
+   that support multiple different combinations of argument types. A series
+   of ``@overload``-decorated definitions must be followed by exactly one
+   non-``@overload``-decorated definition (for the same function/method).
 
-   A generic version of :class:`collections.abc.MutableSequence`.
+   ``@overload``-decorated definitions are for the benefit of the
+   type checker only, since they will be overwritten by the
+   non-``@overload``-decorated definition. The non-``@overload``-decorated
+   definition, meanwhile, will be used at
+   runtime but should be ignored by a type checker.  At runtime, calling
+   an ``@overload``-decorated function directly will raise
+   :exc:`NotImplementedError`.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.MutableSequence`
-      now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   An example of overload that gives a more
+   precise type than can be expressed using a union or a type variable:
 
-.. class:: MutableSet(AbstractSet[T])
+   .. testcode::
 
-   A generic version of :class:`collections.abc.MutableSet`.
+      @overload
+      def process(response: None) -> None:
+          ...
+      @overload
+      def process(response: int) -> tuple[int, str]:
+          ...
+      @overload
+      def process(response: bytes) -> str:
+          ...
+      def process(response):
+          ...  # actual implementation goes here
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.MutableSet` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   See :pep:`484` for more details and comparison with other typing semantics.
 
-.. class:: Sequence(Reversible[T_co], Collection[T_co])
+   .. versionchanged:: 3.11
+      Overloaded functions can now be introspected at runtime using
+      :func:`get_overloads`.
 
-   A generic version of :class:`collections.abc.Sequence`.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Sequence` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+.. function:: get_overloads(func)
 
-.. class:: ValuesView(MappingView, Collection[_VT_co])
+   Return a sequence of :func:`@overload <overload>`-decorated definitions for
+   *func*.
 
-   A generic version of :class:`collections.abc.ValuesView`.
+   *func* is the function object for the implementation of the
+   overloaded function. For example, given the definition of ``process`` in
+   the documentation for :func:`@overload <overload>`,
+   ``get_overloads(process)`` will return a sequence of three function objects
+   for the three defined overloads. If called on a function with no overloads,
+   ``get_overloads()`` returns an empty sequence.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.ValuesView` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   ``get_overloads()`` can be used for introspecting an overloaded function at
+   runtime.
 
-Corresponding to other types in :mod:`collections.abc`
-""""""""""""""""""""""""""""""""""""""""""""""""""""""
+   .. versionadded:: 3.11
 
-.. class:: Iterable(Generic[T_co])
 
-   A generic version of :class:`collections.abc.Iterable`.
+.. function:: clear_overloads()
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Iterable` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   Clear all registered overloads in the internal registry.
 
-.. class:: Iterator(Iterable[T_co])
+   This can be used to reclaim the memory used by the registry.
 
-   A generic version of :class:`collections.abc.Iterator`.
+   .. versionadded:: 3.11
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Iterator` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
 
-.. class:: Generator(Iterator[T_co], Generic[T_co, T_contra, V_co])
+.. decorator:: final
 
-   A generator can be annotated by the generic type
-   ``Generator[YieldType, SendType, ReturnType]``. For example::
+   Decorator to indicate final methods and final classes.
 
-      def echo_round() -> Generator[int, float, str]:
-          sent = yield 0
-          while sent >= 0:
-              sent = yield round(sent)
-          return 'Done'
+   Decorating a method with ``@final`` indicates to a type checker that the
+   method cannot be overridden in a subclass. Decorating a class with ``@final``
+   indicates that it cannot be subclassed.
 
-   Note that unlike many other generics in the typing module, the ``SendType``
-   of :class:`Generator` behaves contravariantly, not covariantly or
-   invariantly.
+   For example::
 
-   If your generator will only yield values, set the ``SendType`` and
-   ``ReturnType`` to ``None``::
+      class Base:
+          @final
+          def done(self) -> None:
+              ...
+      class Sub(Base):
+          def done(self) -> None:  # Error reported by type checker
+              ...
 
-      def infinite_stream(start: int) -> Generator[int, None, None]:
-          while True:
-              yield start
-              start += 1
+      @final
+      class Leaf:
+          ...
+      class Other(Leaf):  # Error reported by type checker
+          ...
 
-   Alternatively, annotate your generator as having a return type of
-   either ``Iterable[YieldType]`` or ``Iterator[YieldType]``::
+   There is no runtime checking of these properties. See :pep:`591` for
+   more details.
 
-      def infinite_stream(start: int) -> Iterator[int]:
-          while True:
-              yield start
-              start += 1
+   .. versionadded:: 3.8
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Generator` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   .. versionchanged:: 3.11
+      The decorator will now attempt to set a ``__final__`` attribute to ``True``
+      on the decorated object. Thus, a check like
+      ``if getattr(obj, "__final__", False)`` can be used at runtime
+      to determine whether an object ``obj`` has been marked as final.
+      If the decorated object does not support setting attributes,
+      the decorator returns the object unchanged without raising an exception.
 
-.. class:: Hashable
 
-   An alias to :class:`collections.abc.Hashable`.
+.. decorator:: no_type_check
 
-   .. deprecated:: 3.12
-      Use :class:`collections.abc.Hashable` directly instead.
+   Decorator to indicate that annotations are not type hints.
 
-.. class:: Reversible(Iterable[T_co])
+   This works as a class or function :term:`decorator`.  With a class, it
+   applies recursively to all methods and classes defined in that class
+   (but not to methods defined in its superclasses or subclasses). Type
+   checkers will ignore all annotations in a function or class with this
+   decorator.
 
-   A generic version of :class:`collections.abc.Reversible`.
+   ``@no_type_check`` mutates the decorated object in place.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Reversible` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+.. decorator:: no_type_check_decorator
 
-.. class:: Sized
+   Decorator to give another decorator the :func:`no_type_check` effect.
 
-   An alias to :class:`collections.abc.Sized`.
+   This wraps the decorator with something that wraps the decorated
+   function in :func:`no_type_check`.
 
-   .. deprecated:: 3.12
-      Use :class:`collections.abc.Sized` directly instead.
+   .. deprecated-removed:: 3.13 3.15
+      No type checker ever added support for ``@no_type_check_decorator``. It
+      is therefore deprecated, and will be removed in Python 3.15.
 
-Asynchronous programming
-""""""""""""""""""""""""
+.. decorator:: override
 
-.. class:: Coroutine(Awaitable[V_co], Generic[T_co, T_contra, V_co])
+   Decorator to indicate that a method in a subclass is intended to override a
+   method or attribute in a superclass.
 
-   A generic version of :class:`collections.abc.Coroutine`.
-   The variance and order of type variables
-   correspond to those of :class:`Generator`, for example::
+   Type checkers should emit an error if a method decorated with ``@override``
+   does not, in fact, override anything.
+   This helps prevent bugs that may occur when a base class is changed without
+   an equivalent change to a child class.
 
-      from collections.abc import Coroutine
-      c: Coroutine[list[str], str, int]  # Some coroutine defined elsewhere
-      x = c.send('hi')                   # Inferred type of 'x' is list[str]
-      async def bar() -> None:
-          y = await c                    # Inferred type of 'y' is int
+   For example:
 
-   .. versionadded:: 3.5.3
+   .. testcode::
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Coroutine` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+      class Base:
+          def log_status(self) -> None:
+              ...
 
-.. class:: AsyncGenerator(AsyncIterator[T_co], Generic[T_co, T_contra])
+      class Sub(Base):
+          @override
+          def log_status(self) -> None:  # Okay: overrides Base.log_status
+              ...
 
-   An async generator can be annotated by the generic type
-   ``AsyncGenerator[YieldType, SendType]``. For example::
+          @override
+          def done(self) -> None:  # Error reported by type checker
+              ...
 
-      async def echo_round() -> AsyncGenerator[int, float]:
-          sent = yield 0
-          while sent >= 0.0:
-              rounded = await round(sent)
-              sent = yield rounded
+   There is no runtime checking of this property.
 
-   Unlike normal generators, async generators cannot return a value, so there
-   is no ``ReturnType`` type parameter. As with :class:`Generator`, the
-   ``SendType`` behaves contravariantly.
+   The decorator will attempt to set an ``__override__`` attribute to ``True`` on
+   the decorated object. Thus, a check like
+   ``if getattr(obj, "__override__", False)`` can be used at runtime to determine
+   whether an object ``obj`` has been marked as an override.  If the decorated object
+   does not support setting attributes, the decorator returns the object unchanged
+   without raising an exception.
 
-   If your generator will only yield values, set the ``SendType`` to
-   ``None``::
+   See :pep:`698` for more details.
 
-      async def infinite_stream(start: int) -> AsyncGenerator[int, None]:
-          while True:
-              yield start
-              start = await increment(start)
+   .. versionadded:: 3.12
 
-   Alternatively, annotate your generator as having a return type of
-   either ``AsyncIterable[YieldType]`` or ``AsyncIterator[YieldType]``::
 
-      async def infinite_stream(start: int) -> AsyncIterator[int]:
-          while True:
-              yield start
-              start = await increment(start)
+.. decorator:: type_check_only
 
-   .. versionadded:: 3.6.1
+   Decorator to mark a class or function as unavailable at runtime.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.AsyncGenerator`
-      now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   This decorator is itself not available at runtime. It is mainly
+   intended to mark classes that are defined in type stub files if
+   an implementation returns an instance of a private class::
 
-.. class:: AsyncIterable(Generic[T_co])
+      @type_check_only
+      class Response:  # private or not available at runtime
+          code: int
+          def get_header(self, name: str) -> str: ...
 
-   A generic version of :class:`collections.abc.AsyncIterable`.
+      def fetch_response() -> Response: ...
 
-   .. versionadded:: 3.5.2
+   Note that returning instances of private classes is not recommended.
+   It is usually preferable to make such classes public.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.AsyncIterable` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+Introspection helpers
+---------------------
 
-.. class:: AsyncIterator(AsyncIterable[T_co])
+.. function:: get_type_hints(obj, globalns=None, localns=None, include_extras=False)
 
-   A generic version of :class:`collections.abc.AsyncIterator`.
+   Return a dictionary containing type hints for a function, method, module
+   or class object.
 
-   .. versionadded:: 3.5.2
+   This is often the same as ``obj.__annotations__``. In addition,
+   forward references encoded as string literals are handled by evaluating
+   them in ``globals`` and ``locals`` namespaces. For a class ``C``, return
+   a dictionary constructed by merging all the ``__annotations__`` along
+   ``C.__mro__`` in reverse order.
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.AsyncIterator` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   The function recursively replaces all ``Annotated[T, ...]`` with ``T``,
+   unless ``include_extras`` is set to ``True`` (see :class:`Annotated` for
+   more information). For example:
 
-.. class:: Awaitable(Generic[T_co])
+   .. testcode::
 
-   A generic version of :class:`collections.abc.Awaitable`.
+       class Student(NamedTuple):
+           name: Annotated[str, 'some marker']
 
-   .. versionadded:: 3.5.2
+       assert get_type_hints(Student) == {'name': str}
+       assert get_type_hints(Student, include_extras=False) == {'name': str}
+       assert get_type_hints(Student, include_extras=True) == {
+           'name': Annotated[str, 'some marker']
+       }
 
-   .. deprecated:: 3.9
-      :class:`collections.abc.Awaitable` now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   .. note::
 
+      :func:`get_type_hints` does not work with imported
+      :ref:`type aliases <type-aliases>` that include forward references.
+      Enabling postponed evaluation of annotations (:pep:`563`) may remove
+      the need for most forward references.
 
-Context manager types
-"""""""""""""""""""""
+   .. versionchanged:: 3.9
+      Added ``include_extras`` parameter as part of :pep:`593`.
+      See the documentation on :data:`Annotated` for more information.
 
-.. class:: ContextManager(Generic[T_co])
+   .. versionchanged:: 3.11
+      Previously, ``Optional[t]`` was added for function and method annotations
+      if a default value equal to ``None`` was set.
+      Now the annotation is returned unchanged.
 
-   A generic version of :class:`contextlib.AbstractContextManager`.
+.. function:: get_origin(tp)
 
-   .. versionadded:: 3.5.4
-   .. versionadded:: 3.6.0
+   Get the unsubscripted version of a type: for a typing object of the form
+   ``X[Y, Z, ...]`` return ``X``.
 
-   .. deprecated:: 3.9
-      :class:`contextlib.AbstractContextManager`
-      now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   If ``X`` is a typing-module alias for a builtin or
+   :mod:`collections` class, it will be normalized to the original class.
+   If ``X`` is an instance of :class:`ParamSpecArgs` or :class:`ParamSpecKwargs`,
+   return the underlying :class:`ParamSpec`.
+   Return ``None`` for unsupported objects.
 
-.. class:: AsyncContextManager(Generic[T_co])
+   Examples:
 
-   A generic version of :class:`contextlib.AbstractAsyncContextManager`.
+   .. testcode::
 
-   .. versionadded:: 3.5.4
-   .. versionadded:: 3.6.2
+      assert get_origin(str) is None
+      assert get_origin(Dict[str, int]) is dict
+      assert get_origin(Union[int, str]) is Union
+      P = ParamSpec('P')
+      assert get_origin(P.args) is P
+      assert get_origin(P.kwargs) is P
 
-   .. deprecated:: 3.9
-      :class:`contextlib.AbstractAsyncContextManager`
-      now supports subscripting (``[]``).
-      See :pep:`585` and :ref:`types-genericalias`.
+   .. versionadded:: 3.8
 
-Protocols
----------
+.. function:: get_args(tp)
 
-These protocols are decorated with :func:`runtime_checkable`.
+   Get type arguments with all substitutions performed: for a typing object
+   of the form ``X[Y, Z, ...]`` return ``(Y, Z, ...)``.
 
-.. class:: SupportsAbs
+   If ``X`` is a union or :class:`Literal` contained in another
+   generic type, the order of ``(Y, Z, ...)`` may be different from the order
+   of the original arguments ``[Y, Z, ...]`` due to type caching.
+   Return ``()`` for unsupported objects.
 
-    An ABC with one abstract method ``__abs__`` that is covariant
-    in its return type.
+   Examples:
 
-.. class:: SupportsBytes
+   .. testcode::
 
-    An ABC with one abstract method ``__bytes__``.
+      assert get_args(int) == ()
+      assert get_args(Dict[int, str]) == (int, str)
+      assert get_args(Union[int, str]) == (int, str)
 
-.. class:: SupportsComplex
+   .. versionadded:: 3.8
 
-    An ABC with one abstract method ``__complex__``.
+.. function:: get_protocol_members(tp)
 
-.. class:: SupportsFloat
+   Return the set of members defined in a :class:`Protocol`.
 
-    An ABC with one abstract method ``__float__``.
+   .. doctest::
 
-.. class:: SupportsIndex
+      >>> from typing import Protocol, get_protocol_members
+      >>> class P(Protocol):
+      ...     def a(self) -> str: ...
+      ...     b: int
+      >>> get_protocol_members(P) == frozenset({'a', 'b'})
+      True
 
-    An ABC with one abstract method ``__index__``.
+   Raise :exc:`TypeError` for arguments that are not Protocols.
 
-    .. versionadded:: 3.8
+   .. versionadded:: 3.13
 
-.. class:: SupportsInt
+.. function:: is_protocol(tp)
 
-    An ABC with one abstract method ``__int__``.
+   Determine if a type is a :class:`Protocol`.
 
-.. class:: SupportsRound
+   For example::
 
-    An ABC with one abstract method ``__round__``
-    that is covariant in its return type.
+      class P(Protocol):
+          def a(self) -> str: ...
+          b: int
 
-Functions and decorators
-------------------------
+      is_protocol(P)    # => True
+      is_protocol(int)  # => False
 
-.. function:: cast(typ, val)
+   .. versionadded:: 3.13
 
-   Cast a value to a type.
+.. function:: is_typeddict(tp)
 
-   This returns the value unchanged.  To the type checker this
-   signals that the return value has the designated type, but at
-   runtime we intentionally don't check anything (we want this
-   to be as fast as possible).
+   Check if a type is a :class:`TypedDict`.
 
-.. function:: assert_type(val, typ, /)
+   For example:
 
-   Ask a static type checker to confirm that *val* has an inferred type of *typ*.
+   .. testcode::
 
-   At runtime this does nothing: it returns the first argument unchanged with no
-   checks or side effects, no matter the actual type of the argument.
+      class Film(TypedDict):
+          title: str
+          year: int
 
-   When a static type checker encounters a call to ``assert_type()``, it
-   emits an error if the value is not of the specified type::
+      assert is_typeddict(Film)
+      assert not is_typeddict(list | str)
 
-       def greet(name: str) -> None:
-           assert_type(name, str)  # OK, inferred type of `name` is `str`
-           assert_type(name, int)  # type checker error
+      # TypedDict is a factory for creating typed dicts,
+      # not a typed dict itself
+      assert not is_typeddict(TypedDict)
 
-   This function is useful for ensuring the type checker's understanding of a
-   script is in line with the developer's intentions::
+   .. versionadded:: 3.10
 
-       def complex_function(arg: object):
-           # Do some complex type-narrowing logic,
-           # after which we hope the inferred type will be `int`
-           ...
-           # Test whether the type checker correctly understands our function
-           assert_type(arg, int)
+.. class:: ForwardRef
 
-   .. versionadded:: 3.11
+   Class used for internal typing representation of string forward references.
 
-.. function:: assert_never(arg, /)
+   For example, ``List["SomeClass"]`` is implicitly transformed into
+   ``List[ForwardRef("SomeClass")]``.  ``ForwardRef`` should not be instantiated by
+   a user, but may be used by introspection tools.
 
-   Ask a static type checker to confirm that a line of code is unreachable.
+   .. note::
+      :pep:`585` generic types such as ``list["SomeClass"]`` will not be
+      implicitly transformed into ``list[ForwardRef("SomeClass")]`` and thus
+      will not automatically resolve to ``list[SomeClass]``.
 
-   Example::
+   .. versionadded:: 3.7.4
 
-       def int_or_str(arg: int | str) -> None:
-           match arg:
-               case int():
-                   print("It's an int")
-               case str():
-                   print("It's a str")
-               case _ as unreachable:
-                   assert_never(unreachable)
+Constant
+--------
 
-   Here, the annotations allow the type checker to infer that the
-   last case can never execute, because ``arg`` is either
-   an :class:`int` or a :class:`str`, and both options are covered by
-   earlier cases.
-   If a type checker finds that a call to ``assert_never()`` is
-   reachable, it will emit an error. For example, if the type annotation
-   for ``arg`` was instead ``int | str | float``, the type checker would
-   emit an error pointing out that ``unreachable`` is of type :class:`float`.
-   For a call to ``assert_never`` to pass type checking, the inferred type of
-   the argument passed in must be the bottom type, :data:`Never`, and nothing
-   else.
+.. data:: TYPE_CHECKING
 
-   At runtime, this throws an exception when called.
+   A special constant that is assumed to be ``True`` by 3rd party static
+   type checkers. It is ``False`` at runtime.
 
-   .. seealso::
-      `Unreachable Code and Exhaustiveness Checking
-      <https://typing.readthedocs.io/en/latest/source/unreachable.html>`__ has more
-      information about exhaustiveness checking with static typing.
+   Usage::
 
-   .. versionadded:: 3.11
+      if TYPE_CHECKING:
+          import expensive_mod
 
-.. function:: reveal_type(obj, /)
+      def fun(arg: 'expensive_mod.SomeType') -> None:
+          local_var: expensive_mod.AnotherType = other_fun()
 
-   Reveal the inferred static type of an expression.
+   The first type annotation must be enclosed in quotes, making it a
+   "forward reference", to hide the ``expensive_mod`` reference from the
+   interpreter runtime.  Type annotations for local variables are not
+   evaluated, so the second annotation does not need to be enclosed in quotes.
 
-   When a static type checker encounters a call to this function,
-   it emits a diagnostic with the type of the argument. For example::
+   .. note::
 
-      x: int = 1
-      reveal_type(x)  # Revealed type is "builtins.int"
+      If ``from __future__ import annotations`` is used,
+      annotations are not evaluated at function definition time.
+      Instead, they are stored as strings in ``__annotations__``.
+      This makes it unnecessary to use quotes around the annotation
+      (see :pep:`563`).
 
-   This can be useful when you want to debug how your type checker
-   handles a particular piece of code.
+   .. versionadded:: 3.5.2
 
-   The function returns its argument unchanged, which allows using
-   it within an expression::
+.. _generic-concrete-collections:
+.. _deprecated-aliases:
 
-      x = reveal_type(1)  # Revealed type is "builtins.int"
+Deprecated aliases
+------------------
 
-   Most type checkers support ``reveal_type()`` anywhere, even if the
-   name is not imported from ``typing``. Importing the name from
-   ``typing`` allows your code to run without runtime errors and
-   communicates intent more clearly.
+This module defines several deprecated aliases to pre-existing
+standard library classes. These were originally included in the typing
+module in order to support parameterizing these generic classes using ``[]``.
+However, the aliases became redundant in Python 3.9 when the
+corresponding pre-existing classes were enhanced to support ``[]`` (see
+:pep:`585`).
 
-   At runtime, this function prints the runtime type of its argument to stderr
-   and returns it unchanged::
+The redundant types are deprecated as of Python 3.9. However, while the aliases
+may be removed at some point, removal of these aliases is not currently
+planned. As such, no deprecation warnings are currently issued by the
+interpreter for these aliases.
 
-      x = reveal_type(1)  # prints "Runtime type is int"
-      print(x)  # prints "1"
+If at some point it is decided to remove these deprecated aliases, a
+deprecation warning will be issued by the interpreter for at least two releases
+prior to removal. The aliases are guaranteed to remain in the typing module
+without deprecation warnings until at least Python 3.14.
 
-   .. versionadded:: 3.11
+Type checkers are encouraged to flag uses of the deprecated types if the
+program they are checking targets a minimum Python version of 3.9 or newer.
 
-.. decorator:: dataclass_transform
+.. _corresponding-to-built-in-types:
 
-   :data:`~typing.dataclass_transform` may be used to
-   decorate a class, metaclass, or a function that is itself a decorator.
-   The presence of ``@dataclass_transform()`` tells a static type checker that the
-   decorated object performs runtime "magic" that
-   transforms a class, giving it :func:`dataclasses.dataclass`-like behaviors.
+Aliases to built-in types
+"""""""""""""""""""""""""
 
-   Example usage with a decorator function::
+.. class:: Dict(dict, MutableMapping[KT, VT])
 
-      T = TypeVar("T")
+   Deprecated alias to :class:`dict`.
 
-      @dataclass_transform()
-      def create_model(cls: type[T]) -> type[T]:
+   Note that to annotate arguments, it is preferred
+   to use an abstract collection type such as :class:`Mapping`
+   rather than to use :class:`dict` or :class:`!typing.Dict`.
+
+   This type can be used as follows::
+
+      def count_words(text: str) -> Dict[str, int]:
           ...
-          return cls
 
-      @create_model
-      class CustomerModel:
-          id: int
-          name: str
+   .. deprecated:: 3.9
+      :class:`builtins.dict <dict>` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   On a base class::
+.. class:: List(list, MutableSequence[T])
 
-      @dataclass_transform()
-      class ModelBase: ...
+   Deprecated alias to :class:`list`.
 
-      class CustomerModel(ModelBase):
-          id: int
-          name: str
+   Note that to annotate arguments, it is preferred
+   to use an abstract collection type such as :class:`Sequence` or
+   :class:`Iterable` rather than to use :class:`list` or :class:`!typing.List`.
 
-   On a metaclass::
+   This type may be used as follows::
 
-      @dataclass_transform()
-      class ModelMeta(type): ...
+      def vec2[T: (int, float)](x: T, y: T) -> List[T]:
+          return [x, y]
 
-      class ModelBase(metaclass=ModelMeta): ...
+      def keep_positives[T: (int, float)](vector: Sequence[T]) -> List[T]:
+          return [item for item in vector if item > 0]
 
-      class CustomerModel(ModelBase):
-          id: int
-          name: str
+   .. deprecated:: 3.9
+      :class:`builtins.list <list>` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   The ``CustomerModel`` classes defined above will
-   be treated by type checkers similarly to classes created with
-   :func:`@dataclasses.dataclass <dataclasses.dataclass>`.
-   For example, type checkers will assume these classes have
-   ``__init__`` methods that accept ``id`` and ``name``.
+.. class:: Set(set, MutableSet[T])
 
-   The decorated class, metaclass, or function may accept the following bool
-   arguments which type checkers will assume have the same effect as they
-   would have on the
-   :func:`@dataclasses.dataclass<dataclasses.dataclass>` decorator: ``init``,
-   ``eq``, ``order``, ``unsafe_hash``, ``frozen``, ``match_args``,
-   ``kw_only``, and ``slots``. It must be possible for the value of these
-   arguments (``True`` or ``False``) to be statically evaluated.
+   Deprecated alias to :class:`builtins.set <set>`.
 
-   The arguments to the ``dataclass_transform`` decorator can be used to
-   customize the default behaviors of the decorated class, metaclass, or
-   function:
+   Note that to annotate arguments, it is preferred
+   to use an abstract collection type such as :class:`AbstractSet`
+   rather than to use :class:`set` or :class:`!typing.Set`.
 
-   * ``eq_default`` indicates whether the ``eq`` parameter is assumed to be
-     ``True`` or ``False`` if it is omitted by the caller.
-   * ``order_default`` indicates whether the ``order`` parameter is
-     assumed to be True or False if it is omitted by the caller.
-   * ``kw_only_default`` indicates whether the ``kw_only`` parameter is
-     assumed to be True or False if it is omitted by the caller.
-   * ``frozen_default`` indicates whether the ``frozen`` parameter is
-     assumed to be True or False if it is omitted by the caller.
-
-     .. versionadded:: 3.12
-   * ``field_specifiers`` specifies a static list of supported classes
-     or functions that describe fields, similar to ``dataclasses.field()``.
-   * Arbitrary other keyword arguments are accepted in order to allow for
-     possible future extensions.
-
-   Type checkers recognize the following optional arguments on field
-   specifiers:
+   .. deprecated:: 3.9
+      :class:`builtins.set <set>` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   * ``init`` indicates whether the field should be included in the
-     synthesized ``__init__`` method. If unspecified, ``init`` defaults to
-     ``True``.
-   * ``default`` provides the default value for the field.
-   * ``default_factory`` provides a runtime callback that returns the
-     default value for the field. If neither ``default`` nor
-     ``default_factory`` are specified, the field is assumed to have no
-     default value and must be provided a value when the class is
-     instantiated.
-   * ``factory`` is an alias for ``default_factory``.
-   * ``kw_only`` indicates whether the field should be marked as
-     keyword-only. If ``True``, the field will be keyword-only. If
-     ``False``, it will not be keyword-only. If unspecified, the value of
-     the ``kw_only`` parameter on the object decorated with
-     ``dataclass_transform`` will be used, or if that is unspecified, the
-     value of ``kw_only_default`` on ``dataclass_transform`` will be used.
-   * ``alias`` provides an alternative name for the field. This alternative
-     name is used in the synthesized ``__init__`` method.
+.. class:: FrozenSet(frozenset, AbstractSet[T_co])
 
-   At runtime, this decorator records its arguments in the
-   ``__dataclass_transform__`` attribute on the decorated object.
-   It has no other runtime effect.
+   Deprecated alias to :class:`builtins.frozenset <frozenset>`.
 
-   See :pep:`681` for more details.
+   .. deprecated:: 3.9
+      :class:`builtins.frozenset <frozenset>`
+      now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   .. versionadded:: 3.11
+.. data:: Tuple
 
-.. decorator:: overload
+   Deprecated alias for :class:`tuple`.
 
-   The ``@overload`` decorator allows describing functions and methods
-   that support multiple different combinations of argument types. A series
-   of ``@overload``-decorated definitions must be followed by exactly one
-   non-``@overload``-decorated definition (for the same function/method).
-   The ``@overload``-decorated definitions are for the benefit of the
-   type checker only, since they will be overwritten by the
-   non-``@overload``-decorated definition, while the latter is used at
-   runtime but should be ignored by a type checker.  At runtime, calling
-   a ``@overload``-decorated function directly will raise
-   :exc:`NotImplementedError`. An example of overload that gives a more
-   precise type than can be expressed using a union or a type variable::
+   :class:`tuple` and ``Tuple`` are special-cased in the type system; see
+   :ref:`annotating-tuples` for more details.
 
-      @overload
-      def process(response: None) -> None:
-          ...
-      @overload
-      def process(response: int) -> tuple[int, str]:
-          ...
-      @overload
-      def process(response: bytes) -> str:
-          ...
-      def process(response):
-          <actual implementation>
+   .. deprecated:: 3.9
+      :class:`builtins.tuple <tuple>` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   See :pep:`484` for more details and comparison with other typing semantics.
+.. class:: Type(Generic[CT_co])
 
-   .. versionchanged:: 3.11
-      Overloaded functions can now be introspected at runtime using
-      :func:`get_overloads`.
+   Deprecated alias to :class:`type`.
 
+   See :ref:`type-of-class-objects` for details on using :class:`type` or
+   ``typing.Type`` in type annotations.
 
-.. function:: get_overloads(func)
+   .. versionadded:: 3.5.2
 
-   Return a sequence of :func:`@overload <overload>`-decorated definitions for
-   *func*. *func* is the function object for the implementation of the
-   overloaded function. For example, given the definition of ``process`` in
-   the documentation for :func:`@overload <overload>`,
-   ``get_overloads(process)`` will return a sequence of three function objects
-   for the three defined overloads. If called on a function with no overloads,
-   ``get_overloads()`` returns an empty sequence.
+   .. deprecated:: 3.9
+      :class:`builtins.type <type>` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   ``get_overloads()`` can be used for introspecting an overloaded function at
-   runtime.
+.. _corresponding-to-types-in-collections:
 
-   .. versionadded:: 3.11
+Aliases to types in :mod:`collections`
+""""""""""""""""""""""""""""""""""""""
 
+.. class:: DefaultDict(collections.defaultdict, MutableMapping[KT, VT])
 
-.. function:: clear_overloads()
+   Deprecated alias to :class:`collections.defaultdict`.
 
-   Clear all registered overloads in the internal registry. This can be used
-   to reclaim the memory used by the registry.
+   .. versionadded:: 3.5.2
 
-   .. versionadded:: 3.11
+   .. deprecated:: 3.9
+      :class:`collections.defaultdict` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
+.. class:: OrderedDict(collections.OrderedDict, MutableMapping[KT, VT])
 
-.. decorator:: final
+   Deprecated alias to :class:`collections.OrderedDict`.
 
-   A decorator to indicate to type checkers that the decorated method
-   cannot be overridden, and the decorated class cannot be subclassed.
-   For example::
+   .. versionadded:: 3.7.2
 
-      class Base:
-          @final
-          def done(self) -> None:
-              ...
-      class Sub(Base):
-          def done(self) -> None:  # Error reported by type checker
-              ...
+   .. deprecated:: 3.9
+      :class:`collections.OrderedDict` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-      @final
-      class Leaf:
-          ...
-      class Other(Leaf):  # Error reported by type checker
-          ...
+.. class:: ChainMap(collections.ChainMap, MutableMapping[KT, VT])
 
-   There is no runtime checking of these properties. See :pep:`591` for
-   more details.
+   Deprecated alias to :class:`collections.ChainMap`.
 
-   .. versionadded:: 3.8
+   .. versionadded:: 3.5.4
+   .. versionadded:: 3.6.1
 
-   .. versionchanged:: 3.11
-      The decorator will now set the ``__final__`` attribute to ``True``
-      on the decorated object. Thus, a check like
-      ``if getattr(obj, "__final__", False)`` can be used at runtime
-      to determine whether an object ``obj`` has been marked as final.
-      If the decorated object does not support setting attributes,
-      the decorator returns the object unchanged without raising an exception.
+   .. deprecated:: 3.9
+      :class:`collections.ChainMap` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
+.. class:: Counter(collections.Counter, Dict[T, int])
 
-.. decorator:: no_type_check
+   Deprecated alias to :class:`collections.Counter`.
 
-   Decorator to indicate that annotations are not type hints.
+   .. versionadded:: 3.5.4
+   .. versionadded:: 3.6.1
 
-   This works as class or function :term:`decorator`.  With a class, it
-   applies recursively to all methods and classes defined in that class
-   (but not to methods defined in its superclasses or subclasses).
+   .. deprecated:: 3.9
+      :class:`collections.Counter` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   This mutates the function(s) in place.
+.. class:: Deque(deque, MutableSequence[T])
 
-.. decorator:: no_type_check_decorator
+   Deprecated alias to :class:`collections.deque`.
 
-   Decorator to give another decorator the :func:`no_type_check` effect.
+   .. versionadded:: 3.5.4
+   .. versionadded:: 3.6.1
 
-   This wraps the decorator with something that wraps the decorated
-   function in :func:`no_type_check`.
+   .. deprecated:: 3.9
+      :class:`collections.deque` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
+.. _other-concrete-types:
 
-.. decorator:: override
+Aliases to other concrete types
+"""""""""""""""""""""""""""""""
 
-   A decorator for methods that indicates to type checkers that this method
-   should override a method or attribute with the same name on a base class.
-   This helps prevent bugs that may occur when a base class is changed without
-   an equivalent change to a child class.
+.. class:: Pattern
+           Match
 
-   For example::
+   Deprecated aliases corresponding to the return types from
+   :func:`re.compile` and :func:`re.match`.
 
-      class Base:
-           def log_status(self)
+   These types (and the corresponding functions) are generic over
+   :data:`AnyStr`. ``Pattern`` can be specialised as ``Pattern[str]`` or
+   ``Pattern[bytes]``; ``Match`` can be specialised as ``Match[str]`` or
+   ``Match[bytes]``.
 
-      class Sub(Base):
-          @override
-          def log_status(self) -> None:  # Okay: overrides Base.log_status
-              ...
+   .. deprecated:: 3.9
+      Classes ``Pattern`` and ``Match`` from :mod:`re` now support ``[]``.
+      See :pep:`585` and :ref:`types-genericalias`.
 
-          @override
-          def done(self) -> None:  # Error reported by type checker
-              ...
+.. class:: Text
 
-   There is no runtime checking of this property.
+   Deprecated alias for :class:`str`.
 
-   The decorator will set the ``__override__`` attribute to ``True`` on
-   the decorated object. Thus, a check like
-   ``if getattr(obj, "__override__", False)`` can be used at runtime to determine
-   whether an object ``obj`` has been marked as an override.  If the decorated object
-   does not support setting attributes, the decorator returns the object unchanged
-   without raising an exception.
+   ``Text`` is provided to supply a forward
+   compatible path for Python 2 code: in Python 2, ``Text`` is an alias for
+   ``unicode``.
 
-   See :pep:`698` for more details.
+   Use ``Text`` to indicate that a value must contain a unicode string in
+   a manner that is compatible with both Python 2 and Python 3::
 
-   .. versionadded:: 3.12
+       def add_unicode_checkmark(text: Text) -> Text:
+           return text + u' \u2713'
 
+   .. versionadded:: 3.5.2
 
-.. decorator:: type_check_only
+   .. deprecated:: 3.11
+      Python 2 is no longer supported, and most type checkers also no longer
+      support type checking Python 2 code. Removal of the alias is not
+      currently planned, but users are encouraged to use
+      :class:`str` instead of ``Text``.
 
-   Decorator to mark a class or function to be unavailable at runtime.
+.. _abstract-base-classes:
+.. _corresponding-to-collections-in-collections-abc:
 
-   This decorator is itself not available at runtime. It is mainly
-   intended to mark classes that are defined in type stub files if
-   an implementation returns an instance of a private class::
+Aliases to container ABCs in :mod:`collections.abc`
+"""""""""""""""""""""""""""""""""""""""""""""""""""
 
-      @type_check_only
-      class Response:  # private or not available at runtime
-          code: int
-          def get_header(self, name: str) -> str: ...
+.. class:: AbstractSet(Collection[T_co])
 
-      def fetch_response() -> Response: ...
+   Deprecated alias to :class:`collections.abc.Set`.
 
-   Note that returning instances of private classes is not recommended.
-   It is usually preferable to make such classes public.
+   .. deprecated:: 3.9
+      :class:`collections.abc.Set` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-Introspection helpers
----------------------
+.. class:: ByteString(Sequence[int])
 
-.. function:: get_type_hints(obj, globalns=None, localns=None, include_extras=False)
+   This type represents the types :class:`bytes`, :class:`bytearray`,
+   and :class:`memoryview` of byte sequences.
 
-   Return a dictionary containing type hints for a function, method, module
-   or class object.
+   .. deprecated-removed:: 3.9 3.14
+      Prefer :class:`collections.abc.Buffer`, or a union like ``bytes | bytearray | memoryview``.
 
-   This is often the same as ``obj.__annotations__``. In addition,
-   forward references encoded as string literals are handled by evaluating
-   them in ``globals`` and ``locals`` namespaces. For a class ``C``, return
-   a dictionary constructed by merging all the ``__annotations__`` along
-   ``C.__mro__`` in reverse order.
+.. class:: Collection(Sized, Iterable[T_co], Container[T_co])
 
-   The function recursively replaces all ``Annotated[T, ...]`` with ``T``,
-   unless ``include_extras`` is set to ``True`` (see :class:`Annotated` for
-   more information). For example::
+   Deprecated alias to :class:`collections.abc.Collection`.
 
-       class Student(NamedTuple):
-           name: Annotated[str, 'some marker']
+   .. versionadded:: 3.6.0
 
-       get_type_hints(Student) == {'name': str}
-       get_type_hints(Student, include_extras=False) == {'name': str}
-       get_type_hints(Student, include_extras=True) == {
-           'name': Annotated[str, 'some marker']
-       }
+   .. deprecated:: 3.9
+      :class:`collections.abc.Collection` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   .. note::
+.. class:: Container(Generic[T_co])
 
-      :func:`get_type_hints` does not work with imported
-      :ref:`type aliases <type-aliases>` that include forward references.
-      Enabling postponed evaluation of annotations (:pep:`563`) may remove
-      the need for most forward references.
+   Deprecated alias to :class:`collections.abc.Container`.
 
-   .. versionchanged:: 3.9
-      Added ``include_extras`` parameter as part of :pep:`593`.
+   .. deprecated:: 3.9
+      :class:`collections.abc.Container` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   .. versionchanged:: 3.11
-      Previously, ``Optional[t]`` was added for function and method annotations
-      if a default value equal to ``None`` was set.
-      Now the annotation is returned unchanged.
+.. class:: ItemsView(MappingView, AbstractSet[tuple[KT_co, VT_co]])
 
-.. function:: get_origin(tp)
+   Deprecated alias to :class:`collections.abc.ItemsView`.
 
-   Get the unsubscripted version of a type: for a typing object of the form
-   ``X[Y, Z, ...]`` return ``X``. If ``X`` is a generic alias for a builtin or
-   :mod:`collections` class, it gets normalized to the original class.
-   If ``X`` is an instance of :class:`ParamSpecArgs` or :class:`ParamSpecKwargs`,
-   return the underlying :class:`ParamSpec`.
-   Return ``None`` for unsupported objects.
-   Examples::
+   .. deprecated:: 3.9
+      :class:`collections.abc.ItemsView` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-      assert get_origin(str) is None
-      assert get_origin(Dict[str, int]) is dict
-      assert get_origin(Union[int, str]) is Union
-      P = ParamSpec('P')
-      assert get_origin(P.args) is P
-      assert get_origin(P.kwargs) is P
+.. class:: KeysView(MappingView, AbstractSet[KT_co])
 
-   .. versionadded:: 3.8
+   Deprecated alias to :class:`collections.abc.KeysView`.
 
-.. function:: get_args(tp)
+   .. deprecated:: 3.9
+      :class:`collections.abc.KeysView` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   Get type arguments with all substitutions performed: for a typing object
-   of the form ``X[Y, Z, ...]`` return ``(Y, Z, ...)``.
-   If ``X`` is a union or :class:`Literal` contained in another
-   generic type, the order of ``(Y, Z, ...)`` may be different from the order
-   of the original arguments ``[Y, Z, ...]`` due to type caching.
-   Return ``()`` for unsupported objects.
-   Examples::
+.. class:: Mapping(Collection[KT], Generic[KT, VT_co])
 
-      assert get_args(int) == ()
-      assert get_args(Dict[int, str]) == (int, str)
-      assert get_args(Union[int, str]) == (int, str)
+   Deprecated alias to :class:`collections.abc.Mapping`.
 
-   .. versionadded:: 3.8
+   This type can be used as follows::
 
-.. function:: is_typeddict(tp)
+      def get_position_in_index(word_list: Mapping[str, int], word: str) -> int:
+          return word_list[word]
 
-   Check if a type is a :class:`TypedDict`.
+   .. deprecated:: 3.9
+      :class:`collections.abc.Mapping` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   For example::
+.. class:: MappingView(Sized)
 
-      class Film(TypedDict):
-          title: str
-          year: int
+   Deprecated alias to :class:`collections.abc.MappingView`.
 
-      is_typeddict(Film)  # => True
-      is_typeddict(list | str)  # => False
+   .. deprecated:: 3.9
+      :class:`collections.abc.MappingView` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   .. versionadded:: 3.10
+.. class:: MutableMapping(Mapping[KT, VT])
 
-.. class:: ForwardRef
+   Deprecated alias to :class:`collections.abc.MutableMapping`.
 
-   A class used for internal typing representation of string forward references.
-   For example, ``List["SomeClass"]`` is implicitly transformed into
-   ``List[ForwardRef("SomeClass")]``.  This class should not be instantiated by
-   a user, but may be used by introspection tools.
+   .. deprecated:: 3.9
+      :class:`collections.abc.MutableMapping`
+      now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-   .. note::
-      :pep:`585` generic types such as ``list["SomeClass"]`` will not be
-      implicitly transformed into ``list[ForwardRef("SomeClass")]`` and thus
-      will not automatically resolve to ``list[SomeClass]``.
+.. class:: MutableSequence(Sequence[T])
 
-   .. versionadded:: 3.7.4
+   Deprecated alias to :class:`collections.abc.MutableSequence`.
 
-Constant
---------
+   .. deprecated:: 3.9
+      :class:`collections.abc.MutableSequence`
+      now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-.. data:: TYPE_CHECKING
+.. class:: MutableSet(AbstractSet[T])
 
-   A special constant that is assumed to be ``True`` by 3rd party static
-   type checkers. It is ``False`` at runtime. Usage::
+   Deprecated alias to :class:`collections.abc.MutableSet`.
 
-      if TYPE_CHECKING:
-          import expensive_mod
+   .. deprecated:: 3.9
+      :class:`collections.abc.MutableSet` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-      def fun(arg: 'expensive_mod.SomeType') -> None:
-          local_var: expensive_mod.AnotherType = other_fun()
+.. class:: Sequence(Reversible[T_co], Collection[T_co])
 
-   The first type annotation must be enclosed in quotes, making it a
-   "forward reference", to hide the ``expensive_mod`` reference from the
-   interpreter runtime.  Type annotations for local variables are not
-   evaluated, so the second annotation does not need to be enclosed in quotes.
+   Deprecated alias to :class:`collections.abc.Sequence`.
 
-   .. note::
+   .. deprecated:: 3.9
+      :class:`collections.abc.Sequence` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
 
-      If ``from __future__ import annotations`` is used,
-      annotations are not evaluated at function definition time.
-      Instead, they are stored as strings in ``__annotations__``.
-      This makes it unnecessary to use quotes around the annotation
-      (see :pep:`563`).
+.. class:: ValuesView(MappingView, Collection[_VT_co])
+
+   Deprecated alias to :class:`collections.abc.ValuesView`.
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.ValuesView` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. _asynchronous-programming:
+
+Aliases to asynchronous ABCs in :mod:`collections.abc`
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+.. class:: Coroutine(Awaitable[ReturnType], Generic[YieldType, SendType, ReturnType])
+
+   Deprecated alias to :class:`collections.abc.Coroutine`.
+
+   The variance and order of type variables
+   correspond to those of :class:`Generator`, for example::
+
+      from collections.abc import Coroutine
+      c: Coroutine[list[str], str, int]  # Some coroutine defined elsewhere
+      x = c.send('hi')                   # Inferred type of 'x' is list[str]
+      async def bar() -> None:
+          y = await c                    # Inferred type of 'y' is int
+
+   .. versionadded:: 3.5.3
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Coroutine` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: AsyncGenerator(AsyncIterator[YieldType], Generic[YieldType, SendType])
+
+   Deprecated alias to :class:`collections.abc.AsyncGenerator`.
+
+   An async generator can be annotated by the generic type
+   ``AsyncGenerator[YieldType, SendType]``. For example::
+
+      async def echo_round() -> AsyncGenerator[int, float]:
+          sent = yield 0
+          while sent >= 0.0:
+              rounded = await round(sent)
+              sent = yield rounded
+
+   Unlike normal generators, async generators cannot return a value, so there
+   is no ``ReturnType`` type parameter. As with :class:`Generator`, the
+   ``SendType`` behaves contravariantly.
+
+   If your generator will only yield values, set the ``SendType`` to
+   ``None``::
+
+      async def infinite_stream(start: int) -> AsyncGenerator[int, None]:
+          while True:
+              yield start
+              start = await increment(start)
+
+   Alternatively, annotate your generator as having a return type of
+   either ``AsyncIterable[YieldType]`` or ``AsyncIterator[YieldType]``::
+
+      async def infinite_stream(start: int) -> AsyncIterator[int]:
+          while True:
+              yield start
+              start = await increment(start)
+
+   .. versionadded:: 3.6.1
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.AsyncGenerator`
+      now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: AsyncIterable(Generic[T_co])
+
+   Deprecated alias to :class:`collections.abc.AsyncIterable`.
 
    .. versionadded:: 3.5.2
 
+   .. deprecated:: 3.9
+      :class:`collections.abc.AsyncIterable` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: AsyncIterator(AsyncIterable[T_co])
+
+   Deprecated alias to :class:`collections.abc.AsyncIterator`.
+
+   .. versionadded:: 3.5.2
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.AsyncIterator` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: Awaitable(Generic[T_co])
+
+   Deprecated alias to :class:`collections.abc.Awaitable`.
+
+   .. versionadded:: 3.5.2
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Awaitable` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. _corresponding-to-other-types-in-collections-abc:
+
+Aliases to other ABCs in :mod:`collections.abc`
+"""""""""""""""""""""""""""""""""""""""""""""""
+
+.. class:: Iterable(Generic[T_co])
+
+   Deprecated alias to :class:`collections.abc.Iterable`.
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Iterable` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: Iterator(Iterable[T_co])
+
+   Deprecated alias to :class:`collections.abc.Iterator`.
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Iterator` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. data:: Callable
+
+   Deprecated alias to :class:`collections.abc.Callable`.
+
+   See :ref:`annotating-callables` for details on how to use
+   :class:`collections.abc.Callable` and ``typing.Callable`` in type annotations.
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Callable` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+   .. versionchanged:: 3.10
+      ``Callable`` now supports :class:`ParamSpec` and :data:`Concatenate`.
+      See :pep:`612` for more details.
+
+.. class:: Generator(Iterator[YieldType], Generic[YieldType, SendType, ReturnType])
+
+   Deprecated alias to :class:`collections.abc.Generator`.
+
+   A generator can be annotated by the generic type
+   ``Generator[YieldType, SendType, ReturnType]``. For example::
+
+      def echo_round() -> Generator[int, float, str]:
+          sent = yield 0
+          while sent >= 0:
+              sent = yield round(sent)
+          return 'Done'
+
+   Note that unlike many other generics in the typing module, the ``SendType``
+   of :class:`Generator` behaves contravariantly, not covariantly or
+   invariantly.
+
+   If your generator will only yield values, set the ``SendType`` and
+   ``ReturnType`` to ``None``::
+
+      def infinite_stream(start: int) -> Generator[int, None, None]:
+          while True:
+              yield start
+              start += 1
+
+   Alternatively, annotate your generator as having a return type of
+   either ``Iterable[YieldType]`` or ``Iterator[YieldType]``::
+
+      def infinite_stream(start: int) -> Iterator[int]:
+          while True:
+              yield start
+              start += 1
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Generator` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: Hashable
+
+   Deprecated alias to :class:`collections.abc.Hashable`.
+
+   .. deprecated:: 3.12
+      Use :class:`collections.abc.Hashable` directly instead.
+
+.. class:: Reversible(Iterable[T_co])
+
+   Deprecated alias to :class:`collections.abc.Reversible`.
+
+   .. deprecated:: 3.9
+      :class:`collections.abc.Reversible` now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: Sized
+
+   Deprecated alias to :class:`collections.abc.Sized`.
+
+   .. deprecated:: 3.12
+      Use :class:`collections.abc.Sized` directly instead.
+
+.. _context-manager-types:
+
+Aliases to :mod:`contextlib` ABCs
+"""""""""""""""""""""""""""""""""
+
+.. class:: ContextManager(Generic[T_co])
+
+   Deprecated alias to :class:`contextlib.AbstractContextManager`.
+
+   .. versionadded:: 3.5.4
+   .. versionadded:: 3.6.0
+
+   .. deprecated:: 3.9
+      :class:`contextlib.AbstractContextManager`
+      now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
+.. class:: AsyncContextManager(Generic[T_co])
+
+   Deprecated alias to :class:`contextlib.AbstractAsyncContextManager`.
+
+   .. versionadded:: 3.5.4
+   .. versionadded:: 3.6.2
+
+   .. deprecated:: 3.9
+      :class:`contextlib.AbstractAsyncContextManager`
+      now supports subscripting (``[]``).
+      See :pep:`585` and :ref:`types-genericalias`.
+
 Deprecation Timeline of Major Features
 ======================================
 
@@ -2978,19 +3708,38 @@ Certain features in ``typing`` are deprecated and may be removed in a future
 version of Python. The following table summarizes major deprecations for your
 convenience. This is subject to change, and not all deprecations are listed.
 
-+----------------------------------+---------------+-------------------+----------------+
-|  Feature                         | Deprecated in | Projected removal | PEP/issue      |
-+==================================+===============+===================+================+
-|  ``typing.io`` and ``typing.re`` | 3.8           | 3.13              | :issue:`38291` |
-|  submodules                      |               |                   |                |
-+----------------------------------+---------------+-------------------+----------------+
-|  ``typing`` versions of standard | 3.9           | Undecided         | :pep:`585`     |
-|  collections                     |               |                   |                |
-+----------------------------------+---------------+-------------------+----------------+
-|  ``typing.ByteString``           | 3.9           | 3.14              | :gh:`91896`    |
-+----------------------------------+---------------+-------------------+----------------+
-|  ``typing.Text``                 | 3.11          | Undecided         | :gh:`92332`    |
-+----------------------------------+---------------+-------------------+----------------+
-|  ``typing.Hashable`` and         | 3.12          | Undecided         | :gh:`94309`    |
-|  ``typing.Sized``                |               |                   |                |
-+----------------------------------+---------------+-------------------+----------------+
+.. list-table::
+   :header-rows: 1
+
+   * - Feature
+     - Deprecated in
+     - Projected removal
+     - PEP/issue
+   * - ``typing`` versions of standard collections
+     - 3.9
+     - Undecided (see :ref:`deprecated-aliases` for more information)
+     - :pep:`585`
+   * - :class:`typing.ByteString`
+     - 3.9
+     - 3.14
+     - :gh:`91896`
+   * - :data:`typing.Text`
+     - 3.11
+     - Undecided
+     - :gh:`92332`
+   * - :class:`typing.Hashable` and :class:`typing.Sized`
+     - 3.12
+     - Undecided
+     - :gh:`94309`
+   * - :data:`typing.TypeAlias`
+     - 3.12
+     - Undecided
+     - :pep:`695`
+   * - :func:`@typing.no_type_check_decorator <no_type_check_decorator>`
+     - 3.13
+     - 3.15
+     - :gh:`106309`
+   * - :data:`typing.AnyStr`
+     - 3.13
+     - 3.18
+     - :gh:`105578`
diff --git a/Doc/library/unicodedata.rst b/Doc/library/unicodedata.rst
index 3a094f9c64d4a0..7db47d48022a0e 100644
--- a/Doc/library/unicodedata.rst
+++ b/Doc/library/unicodedata.rst
@@ -17,8 +17,8 @@
 
 This module provides access to the Unicode Character Database (UCD) which
 defines character properties for all Unicode characters. The data contained in
-this database is compiled from the `UCD version 15.0.0
-<https://www.unicode.org/Public/15.0.0/ucd>`_.
+this database is compiled from the `UCD version 15.1.0
+<https://www.unicode.org/Public/15.1.0/ucd>`_.
 
 The module uses the same names and symbols as defined by Unicode
 Standard Annex #44, `"Unicode Character Database"
@@ -175,6 +175,6 @@ Examples:
 
 .. rubric:: Footnotes
 
-.. [#] https://www.unicode.org/Public/15.0.0/ucd/NameAliases.txt
+.. [#] https://www.unicode.org/Public/15.1.0/ucd/NameAliases.txt
 
-.. [#] https://www.unicode.org/Public/15.0.0/ucd/NamedSequences.txt
+.. [#] https://www.unicode.org/Public/15.1.0/ucd/NamedSequences.txt
diff --git a/Doc/library/unittest.mock-examples.rst b/Doc/library/unittest.mock-examples.rst
index 895b9f9f07671b..f2bdde80bdbd64 100644
--- a/Doc/library/unittest.mock-examples.rst
+++ b/Doc/library/unittest.mock-examples.rst
@@ -339,7 +339,7 @@ instantiate the class in those tests.
     >>> mock.old_method()
     Traceback (most recent call last):
        ...
-    AttributeError: object has no attribute 'old_method'
+    AttributeError: Mock object has no attribute 'old_method'. Did you mean: 'class_method'?
 
 Using a specification also enables a smarter matching of calls made to the
 mock, regardless of whether some parameters were passed as positional or
@@ -360,6 +360,30 @@ of arbitrary attributes as well as the getting of them then you can use
 *spec_set* instead of *spec*.
 
 
+Using side_effect to return per file content
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+:func:`mock_open` is used to patch :func:`open` method. :attr:`~Mock.side_effect`
+can be used to return a new Mock object per call. This can be used to return different
+contents per file stored in a dictionary::
+
+   DEFAULT = "default"
+   data_dict = {"file1": "data1",
+                "file2": "data2"}
+
+   def open_side_effect(name):
+       return mock_open(read_data=data_dict.get(name, DEFAULT))()
+
+   with patch("builtins.open", side_effect=open_side_effect):
+       with open("file1") as file1:
+           assert file1.read() == "data1"
+
+       with open("file2") as file2:
+           assert file2.read() == "data2"
+
+       with open("file3") as file2:
+           assert file2.read() == "default"
+
 
 Patch Decorators
 ----------------
@@ -579,14 +603,14 @@ Partial mocking
 In some tests I wanted to mock out a call to :meth:`datetime.date.today`
 to return a known date, but I didn't want to prevent the code under test from
 creating new date objects. Unfortunately :class:`datetime.date` is written in C, and
-so I couldn't just monkey-patch out the static :meth:`date.today` method.
+so I couldn't just monkey-patch out the static :meth:`datetime.date.today` method.
 
 I found a simple way of doing this that involved effectively wrapping the date
 class with a mock, but passing through calls to the constructor to the real
 class (and returning real instances).
 
 The :func:`patch decorator <patch>` is used here to
-mock out the ``date`` class in the module under test. The :attr:`side_effect`
+mock out the ``date`` class in the module under test. The :attr:`~Mock.side_effect`
 attribute on the mock date class is then set to a lambda function that returns
 a real date. When the mock date class is called a real date will be
 constructed and returned by ``side_effect``. ::
@@ -766,15 +790,16 @@ mock has a nice API for making assertions about how your mock objects are used.
     >>> mock.foo_bar.assert_called_with('baz', spam='eggs')
 
 If your mock is only being called once you can use the
-:meth:`assert_called_once_with` method that also asserts that the
-:attr:`call_count` is one.
+:meth:`~Mock.assert_called_once_with` method that also asserts that the
+:attr:`~Mock.call_count` is one.
 
     >>> mock.foo_bar.assert_called_once_with('baz', spam='eggs')
     >>> mock.foo_bar()
     >>> mock.foo_bar.assert_called_once_with('baz', spam='eggs')
     Traceback (most recent call last):
         ...
-    AssertionError: Expected to be called once. Called 2 times.
+    AssertionError: Expected 'foo_bar' to be called once. Called 2 times.
+    Calls: [call('baz', spam='eggs'), call()].
 
 Both ``assert_called_with`` and ``assert_called_once_with`` make assertions about
 the *most recent* call. If your mock is going to be called several times, and
@@ -835,7 +860,7 @@ One possibility would be for mock to copy the arguments you pass in. This
 could then cause problems if you do assertions that rely on object identity
 for equality.
 
-Here's one solution that uses the :attr:`side_effect`
+Here's one solution that uses the :attr:`~Mock.side_effect`
 functionality. If you provide a ``side_effect`` function for a mock then
 ``side_effect`` will be called with the same args as the mock. This gives us an
 opportunity to copy the arguments and store them for later assertions. In this
@@ -903,8 +928,9 @@ Here's an example implementation:
     >>> c.assert_called_with(arg)
     Traceback (most recent call last):
         ...
-    AssertionError: Expected call: mock({1})
-    Actual call: mock(set())
+    AssertionError: expected call not found.
+    Expected: mock({1})
+    Actual: mock(set())
     >>> c.foo
     <CopyingMock name='mock.foo' id='...'>
 
@@ -971,7 +997,8 @@ We can do this with :class:`MagicMock`, which will behave like a dictionary,
 and using :data:`~Mock.side_effect` to delegate dictionary access to a real
 underlying dictionary that is under our control.
 
-When the :meth:`__getitem__` and :meth:`__setitem__` methods of our ``MagicMock`` are called
+When the :meth:`~object.__getitem__` and :meth:`~object.__setitem__` methods
+of our ``MagicMock`` are called
 (normal dictionary access) then ``side_effect`` is called with the key (and in
 the case of ``__setitem__`` the value too). We can also control what is returned.
 
@@ -1267,8 +1294,9 @@ sufficient:
     >>> mock.assert_called_with(Foo(1, 2))
     Traceback (most recent call last):
         ...
-    AssertionError: Expected: call(<__main__.Foo object at 0x...>)
-    Actual call: call(<__main__.Foo object at 0x...>)
+    AssertionError: expected call not found.
+    Expected: mock(<__main__.Foo object at 0x...>)
+    Actual: mock(<__main__.Foo object at 0x...>)
 
 A comparison function for our ``Foo`` class might look something like this:
 
diff --git a/Doc/library/unittest.mock.rst b/Doc/library/unittest.mock.rst
index 6c4d801f69f5a9..d6ac4d09300d9f 100644
--- a/Doc/library/unittest.mock.rst
+++ b/Doc/library/unittest.mock.rst
@@ -189,7 +189,7 @@ code if they are used incorrectly:
    >>> mock_function('wrong arguments')
    Traceback (most recent call last):
     ...
-   TypeError: <lambda>() takes exactly 3 arguments (1 given)
+   TypeError: missing a required argument: 'b'
 
 :func:`create_autospec` can also be used on classes, where it copies the signature of
 the ``__init__`` method, and on callable objects where it copies the signature of
@@ -205,8 +205,10 @@ The Mock Class
     import asyncio
     import inspect
     import unittest
+    import threading
     from unittest.mock import sentinel, DEFAULT, ANY
     from unittest.mock import patch, call, Mock, MagicMock, PropertyMock, AsyncMock
+    from unittest.mock import ThreadingMock
     from unittest.mock import mock_open
 
 :class:`Mock` is a flexible mock object intended to replace the use of stubs and
@@ -313,6 +315,7 @@ the *new_callable* argument to :func:`patch`.
             Traceback (most recent call last):
             ...
             AssertionError: Expected 'method' to have been called once. Called 2 times.
+            Calls: [call(), call()].
 
         .. versionadded:: 3.6
 
@@ -340,7 +343,7 @@ the *new_callable* argument to :func:`patch`.
             Traceback (most recent call last):
               ...
             AssertionError: Expected 'mock' to be called once. Called 2 times.
-
+            Calls: [call('foo', bar='baz'), call('other', bar='values')].
 
     .. method:: assert_any_call(*args, **kwargs)
 
@@ -390,6 +393,7 @@ the *new_callable* argument to :func:`patch`.
             Traceback (most recent call last):
               ...
             AssertionError: Expected 'hello' to not have been called. Called 1 times.
+            Calls: [call()].
 
         .. versionadded:: 3.5
 
@@ -814,8 +818,8 @@ This applies to :meth:`~Mock.assert_called_with`,
 :meth:`~Mock.assert_any_call`.  When :ref:`auto-speccing`, it will also
 apply to method calls on the mock object.
 
-   .. versionchanged:: 3.4
-      Added signature introspection on specced and autospecced mock objects.
+.. versionchanged:: 3.4
+   Added signature introspection on specced and autospecced mock objects.
 
 
 .. class:: PropertyMock(*args, **kwargs)
@@ -952,7 +956,7 @@ object::
         >>> asyncio.run(main())
         >>> mock.assert_awaited_once()
         >>> asyncio.run(main())
-        >>> mock.method.assert_awaited_once()
+        >>> mock.assert_awaited_once()
         Traceback (most recent call last):
         ...
         AssertionError: Expected mock to have been awaited once. Awaited 2 times.
@@ -970,7 +974,7 @@ object::
         >>> mock.assert_awaited_with('other')
         Traceback (most recent call last):
         ...
-        AssertionError: expected call not found.
+        AssertionError: expected await not found.
         Expected: mock('other')
         Actual: mock('foo', bar='bar')
 
@@ -1099,6 +1103,51 @@ object::
       [call('foo'), call('bar')]
 
 
+.. class:: ThreadingMock(spec=None, side_effect=None, return_value=DEFAULT, wraps=None, name=None, spec_set=None, unsafe=False, *, timeout=UNSET, **kwargs)
+
+  A version of :class:`MagicMock` for multithreading tests. The
+  :class:`ThreadingMock` object provides extra methods to wait for a call to
+  be invoked, rather than assert on it immediately.
+
+  The default timeout is specified by the ``timeout`` argument, or if unset by the
+  :attr:`ThreadingMock.DEFAULT_TIMEOUT` attribute, which defaults to blocking (``None``).
+
+  You can configure the global default timeout by setting :attr:`ThreadingMock.DEFAULT_TIMEOUT`.
+
+  .. method:: wait_until_called(*, timeout=UNSET)
+
+      Waits until the mock is called.
+
+      If a timeout was passed at the creation of the mock or if a timeout
+      argument is passed to this function, the function raises an
+      :exc:`AssertionError` if the call is not performed in time.
+
+        >>> mock = ThreadingMock()
+        >>> thread = threading.Thread(target=mock)
+        >>> thread.start()
+        >>> mock.wait_until_called(timeout=1)
+        >>> thread.join()
+
+  .. method:: wait_until_any_call_with(*args, **kwargs)
+
+      Waits until the mock is called with the specified arguments.
+
+      If a timeout was passed at the creation of the mock
+      the function raises an :exc:`AssertionError` if the call is not performed in time.
+
+        >>> mock = ThreadingMock()
+        >>> thread = threading.Thread(target=mock, args=("arg1", "arg2",), kwargs={"arg": "thing"})
+        >>> thread.start()
+        >>> mock.wait_until_any_call_with("arg1", "arg2", arg="thing")
+        >>> thread.join()
+
+  .. attribute:: DEFAULT_TIMEOUT
+
+    Global default timeout in seconds to create instances of :class:`ThreadingMock`.
+
+  .. versionadded:: 3.13
+
+
 Calling
 ~~~~~~~
 
@@ -1388,9 +1437,9 @@ patch
 
     .. note::
 
-        .. versionchanged:: 3.5
-           If you are patching builtins in a module then you don't
-           need to pass ``create=True``, it will be added by default.
+       .. versionchanged:: 3.5
+          If you are patching builtins in a module then you don't
+          need to pass ``create=True``, it will be added by default.
 
     Patch can be used as a :class:`TestCase` class decorator. It works by
     decorating each test method in the class. This reduces the boilerplate
@@ -1658,7 +1707,7 @@ Keywords can be used in the :func:`patch.dict` call to set values in the diction
 :func:`patch.dict` can be used with dictionary like objects that aren't actually
 dictionaries. At the very minimum they must support item getting, setting,
 deleting and either iteration or membership test. This corresponds to the
-magic methods :meth:`__getitem__`, :meth:`__setitem__`, :meth:`__delitem__` and either
+magic methods :meth:`~object.__getitem__`, :meth:`__setitem__`, :meth:`__delitem__` and either
 :meth:`__iter__` or :meth:`__contains__`.
 
     >>> class Container:
@@ -2438,7 +2487,7 @@ behaviour you can switch it off by setting the module level switch
 
 Alternatively you can just use ``vars(my_mock)`` (instance members) and
 ``dir(type(my_mock))`` (type members) to bypass the filtering irrespective of
-:data:`mock.FILTER_DIR`.
+:const:`mock.FILTER_DIR`.
 
 
 mock_open
@@ -2482,8 +2531,8 @@ are closed properly and is becoming common::
         f.write('something')
 
 The issue is that even if you mock out the call to :func:`open` it is the
-*returned object* that is used as a context manager (and has :meth:`__enter__` and
-:meth:`__exit__` called).
+*returned object* that is used as a context manager (and has :meth:`~object.__enter__` and
+:meth:`~object.__exit__` called).
 
 Mocking context managers with a :class:`MagicMock` is common enough and fiddly
 enough that a helper function is useful. ::
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index b26e6c0e6bc024..02b72cb9f6b8aa 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -206,13 +206,13 @@ Command-line options
 
 .. program:: unittest
 
-.. cmdoption:: -b, --buffer
+.. option:: -b, --buffer
 
    The standard output and standard error streams are buffered during the test
    run. Output during a passing test is discarded. Output is echoed normally
    on test fail or error and is added to the failure messages.
 
-.. cmdoption:: -c, --catch
+.. option:: -c, --catch
 
    :kbd:`Control-C` during the test run waits for the current test to end and then
    reports all the results so far. A second :kbd:`Control-C` raises the normal
@@ -220,11 +220,11 @@ Command-line options
 
    See `Signal Handling`_ for the functions that provide this functionality.
 
-.. cmdoption:: -f, --failfast
+.. option:: -f, --failfast
 
    Stop the test run on the first error or failure.
 
-.. cmdoption:: -k
+.. option:: -k
 
    Only run test methods and classes that match the pattern or substring.
    This option may be used multiple times, in which case all test cases that
@@ -240,11 +240,11 @@ Command-line options
    For example, ``-k foo`` matches ``foo_tests.SomeTest.test_something``,
    ``bar_tests.SomeTest.test_foo``, but not ``bar_tests.FooTest.test_something``.
 
-.. cmdoption:: --locals
+.. option:: --locals
 
    Show local variables in tracebacks.
 
-.. cmdoption:: --durations N
+.. option:: --durations N
 
    Show the N slowest test cases (N=0 for all).
 
@@ -292,19 +292,19 @@ The ``discover`` sub-command has the following options:
 
 .. program:: unittest discover
 
-.. cmdoption:: -v, --verbose
+.. option:: -v, --verbose
 
    Verbose output
 
-.. cmdoption:: -s, --start-directory directory
+.. option:: -s, --start-directory directory
 
    Directory to start discovery (``.`` default)
 
-.. cmdoption:: -p, --pattern pattern
+.. option:: -p, --pattern pattern
 
    Pattern to match test files (``test*.py`` default)
 
-.. cmdoption:: -t, --top-level-directory directory
+.. option:: -t, --top-level-directory directory
 
    Top level directory of project (defaults to start directory)
 
@@ -1134,7 +1134,7 @@ Test cases
 
       If given, *level* should be either a numeric logging level or
       its string equivalent (for example either ``"ERROR"`` or
-      :attr:`logging.ERROR`).  The default is :attr:`logging.INFO`.
+      :const:`logging.ERROR`).  The default is :const:`logging.INFO`.
 
       The test passes if at least one message emitted inside the ``with``
       block matches the *logger* and *level* conditions, otherwise it fails.
@@ -1175,7 +1175,7 @@ Test cases
 
       If given, *level* should be either a numeric logging level or
       its string equivalent (for example either ``"ERROR"`` or
-      :attr:`logging.ERROR`).  The default is :attr:`logging.INFO`.
+      :const:`logging.ERROR`).  The default is :const:`logging.INFO`.
 
       Unlike :meth:`assertLogs`, nothing will be returned by the context
       manager.
@@ -1571,6 +1571,14 @@ Test cases
 
    .. versionadded:: 3.8
 
+   .. attribute:: loop_factory
+
+      The *loop_factory* passed to :class:`asyncio.Runner`. Override
+      in subclasses with :class:`asyncio.EventLoop` to avoid using the
+      asyncio policy system.
+
+      .. versionadded:: 3.13
+
    .. coroutinemethod:: asyncSetUp()
 
       Method called to prepare the test fixture. This is called after :meth:`setUp`.
@@ -2017,7 +2025,7 @@ Loading and running tests
 
    .. attribute:: collectedDurations
 
-      A list containing 2-tuples of :class:`TestCase` instances and floats
+      A list containing 2-tuples of test case names and floats
       representing the elapsed time of each test which was run.
 
       .. versionadded:: 3.12
@@ -2318,6 +2326,8 @@ Loading and running tests
       test names.
 
 
+.. _load_tests-protocol:
+
 load_tests Protocol
 ###################
 
diff --git a/Doc/library/urllib.error.rst b/Doc/library/urllib.error.rst
index 3adbdd26132273..facb11f42a40c5 100644
--- a/Doc/library/urllib.error.rst
+++ b/Doc/library/urllib.error.rst
@@ -27,8 +27,8 @@ The following exceptions are raised by :mod:`urllib.error` as appropriate:
       exception instance.
 
    .. versionchanged:: 3.3
-      :exc:`URLError` has been made a subclass of :exc:`OSError` instead
-      of :exc:`IOError`.
+      :exc:`URLError` used to be a subtype of :exc:`IOError`, which is now an
+      alias of :exc:`OSError`.
 
 
 .. exception:: HTTPError(url, code, msg, hdrs, fp)
@@ -72,6 +72,8 @@ The following exceptions are raised by :mod:`urllib.error` as appropriate:
    This exception is raised when the :func:`~urllib.request.urlretrieve`
    function detects that
    the amount of the downloaded data is less than the expected amount (given by
-   the *Content-Length* header).  The :attr:`content` attribute stores the
-   downloaded (and supposedly truncated) data.
+   the *Content-Length* header).
 
+   .. attribute:: content
+
+      The downloaded (and supposedly truncated) data.
diff --git a/Doc/library/urllib.parse.rst b/Doc/library/urllib.parse.rst
index 96b396510794b4..53e5f0395715d7 100644
--- a/Doc/library/urllib.parse.rst
+++ b/Doc/library/urllib.parse.rst
@@ -23,9 +23,9 @@ to an absolute URL given a "base URL."
 The module has been designed to match the internet RFC on Relative Uniform
 Resource Locators. It supports the following URL schemes: ``file``, ``ftp``,
 ``gopher``, ``hdl``, ``http``, ``https``, ``imap``, ``mailto``, ``mms``,
-``news``, ``nntp``, ``prospero``, ``rsync``, ``rtsp``, ``rtspu``, ``sftp``,
-``shttp``, ``sip``, ``sips``, ``snews``, ``svn``, ``svn+ssh``, ``telnet``,
-``wais``, ``ws``, ``wss``.
+``news``, ``nntp``, ``prospero``, ``rsync``, ``rtsp``, ``rtsps``, ``rtspu``,
+``sftp``, ``shttp``, ``sip``, ``sips``, ``snews``, ``svn``, ``svn+ssh``,
+``telnet``, ``wais``, ``ws``, ``wss``.
 
 The :mod:`urllib.parse` module defines functions that fall into two broad
 categories: URL parsing and URL quoting. These are covered in detail in
@@ -159,6 +159,10 @@ or on combining URL components into a URL string.
       ParseResult(scheme='http', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',
                   params='', query='', fragment='')
 
+   .. warning::
+
+      :func:`urlparse` does not perform validation.  See :ref:`URL parsing
+      security <url-parsing-security>` for details.
 
    .. versionchanged:: 3.2
       Added IPv6 URL parsing capabilities.
@@ -324,8 +328,14 @@ or on combining URL components into a URL string.
    ``#``, ``@``, or ``:`` will raise a :exc:`ValueError`. If the URL is
    decomposed before parsing, no error will be raised.
 
-   Following the `WHATWG spec`_ that updates RFC 3986, ASCII newline
-   ``\n``, ``\r`` and tab ``\t`` characters are stripped from the URL.
+   Following some of the `WHATWG spec`_ that updates RFC 3986, leading C0
+   control and space characters are stripped from the URL. ``\n``,
+   ``\r`` and tab ``\t`` characters are removed from the URL at any position.
+
+   .. warning::
+
+      :func:`urlsplit` does not perform validation.  See :ref:`URL parsing
+      security <url-parsing-security>` for details.
 
    .. versionchanged:: 3.6
       Out-of-range port numbers now raise :exc:`ValueError`, instead of
@@ -338,6 +348,9 @@ or on combining URL components into a URL string.
    .. versionchanged:: 3.10
       ASCII newline and tab characters are stripped from the URL.
 
+   .. versionchanged:: 3.12
+      Leading WHATWG C0 control and space characters are stripped from the URL.
+
 .. _WHATWG spec: https://url.spec.whatwg.org/#concept-basic-url-parser
 
 .. function:: urlunsplit(parts)
@@ -414,6 +427,35 @@ or on combining URL components into a URL string.
    or ``scheme://host/path``). If *url* is not a wrapped URL, it is returned
    without changes.
 
+.. _url-parsing-security:
+
+URL parsing security
+--------------------
+
+The :func:`urlsplit` and :func:`urlparse` APIs do not perform **validation** of
+inputs.  They may not raise errors on inputs that other applications consider
+invalid.  They may also succeed on some inputs that might not be considered
+URLs elsewhere.  Their purpose is for practical functionality rather than
+purity.
+
+Instead of raising an exception on unusual input, they may instead return some
+component parts as empty strings. Or components may contain more than perhaps
+they should.
+
+We recommend that users of these APIs where the values may be used anywhere
+with security implications code defensively. Do some verification within your
+code before trusting a returned component part.  Does that ``scheme`` make
+sense?  Is that a sensible ``path``?  Is there anything strange about that
+``hostname``?  etc.
+
+What constitutes a URL is not universally well defined.  Different applications
+have different needs and desired constraints.  For instance the living `WHATWG
+spec`_ describes what user facing web clients such as a web browser require.
+While :rfc:`3986` is more general.  These functions incorporate some aspects of
+both, but cannot be claimed compliant with either.  The APIs and existing user
+code with expectations on specific behaviors predate both standards leading us
+to be very cautious about making API behavior changes.
+
 .. _parsing-ascii-encoded-bytes:
 
 Parsing ASCII Encoded Bytes
@@ -556,7 +598,7 @@ task isn't already covered by the URL parsing functions above.
 
 .. function:: quote(string, safe='/', encoding=None, errors=None)
 
-   Replace special characters in *string* using the ``%xx`` escape. Letters,
+   Replace special characters in *string* using the :samp:`%{xx}` escape. Letters,
    digits, and the characters ``'_.-~'`` are never quoted. By default, this
    function is intended for quoting the path section of a URL. The optional
    *safe* parameter specifies additional ASCII characters that should not be
@@ -603,7 +645,7 @@ task isn't already covered by the URL parsing functions above.
 
 .. function:: unquote(string, encoding='utf-8', errors='replace')
 
-   Replace ``%xx`` escapes with their single-character equivalent.
+   Replace :samp:`%{xx}` escapes with their single-character equivalent.
    The optional *encoding* and *errors* parameters specify how to decode
    percent-encoded sequences into Unicode characters, as accepted by the
    :meth:`bytes.decode` method.
@@ -634,7 +676,7 @@ task isn't already covered by the URL parsing functions above.
 
 .. function:: unquote_to_bytes(string)
 
-   Replace ``%xx`` escapes with their single-octet equivalent, and return a
+   Replace :samp:`%{xx}` escapes with their single-octet equivalent, and return a
    :class:`bytes` object.
 
    *string* may be either a :class:`str` or a :class:`bytes` object.
diff --git a/Doc/library/urllib.request.rst b/Doc/library/urllib.request.rst
index 1b05458280d896..bf3af1bef0714c 100644
--- a/Doc/library/urllib.request.rst
+++ b/Doc/library/urllib.request.rst
@@ -26,7 +26,7 @@ authentication, redirections, cookies and more.
 The :mod:`urllib.request` module defines the following functions:
 
 
-.. function:: urlopen(url, data=None[, timeout], *, cafile=None, capath=None, cadefault=False, context=None)
+.. function:: urlopen(url, data=None[, timeout], *, context=None)
 
    Open *url*, which can be either a string containing a valid, properly
    encoded URL, or a :class:`Request` object.
@@ -47,14 +47,6 @@ The :mod:`urllib.request` module defines the following functions:
    describing the various SSL options. See :class:`~http.client.HTTPSConnection`
    for more details.
 
-   The optional *cafile* and *capath* parameters specify a set of trusted
-   CA certificates for HTTPS requests.  *cafile* should point to a single
-   file containing a bundle of CA certificates, whereas *capath* should
-   point to a directory of hashed certificate files.  More information can
-   be found in :meth:`ssl.SSLContext.load_verify_locations`.
-
-   The *cadefault* parameter is ignored.
-
    This function always returns an object which can work as a
    :term:`context manager` and has the properties *url*, *headers*, and *status*.
    See :class:`urllib.response.addinfourl` for more detail on these properties.
@@ -99,7 +91,7 @@ The :mod:`urllib.request` module defines the following functions:
 
    .. versionchanged:: 3.2
       HTTPS virtual hosts are now supported if possible (that is, if
-      :data:`ssl.HAS_SNI` is true).
+      :const:`ssl.HAS_SNI` is true).
 
    .. versionadded:: 3.2
       *data* can be an iterable object.
@@ -115,12 +107,9 @@ The :mod:`urllib.request` module defines the following functions:
       ``http/1.1`` when no *context* is given. Custom *context* should set
       ALPN protocols with :meth:`~ssl.SSLContext.set_alpn_protocol`.
 
-   .. deprecated:: 3.6
-
-       *cafile*, *capath* and *cadefault* are deprecated in favor of *context*.
-       Please use :meth:`ssl.SSLContext.load_cert_chain` instead, or let
-       :func:`ssl.create_default_context` select the system's trusted CA
-       certificates for you.
+    .. versionchanged:: 3.13
+       Remove *cafile*, *capath* and *cadefault* parameters: use the *context*
+       parameter instead.
 
 
 .. function:: install_opener(opener)
@@ -315,10 +304,10 @@ The following classes are provided:
    list of hostname suffixes, optionally with ``:port`` appended, for example
    ``cern.ch,ncsa.uiuc.edu,some.host:8080``.
 
-    .. note::
+   .. note::
 
-       ``HTTP_PROXY`` will be ignored if a variable ``REQUEST_METHOD`` is set;
-       see the documentation on :func:`~urllib.request.getproxies`.
+      ``HTTP_PROXY`` will be ignored if a variable ``REQUEST_METHOD`` is set;
+      see the documentation on :func:`~urllib.request.getproxies`.
 
 
 .. class:: HTTPPasswordMgr()
@@ -1536,9 +1525,9 @@ some point in the future.
 :mod:`urllib.request` Restrictions
 ----------------------------------
 
-  .. index::
-     pair: HTTP; protocol
-     pair: FTP; protocol
+.. index::
+   pair: HTTP; protocol
+   pair: FTP; protocol
 
 * Currently, only the following protocols are supported: HTTP (versions 0.9 and
   1.0), FTP, local files, and data URLs.
diff --git a/Doc/library/uu.rst b/Doc/library/uu.rst
deleted file mode 100644
index 83c4aec47bbefc..00000000000000
--- a/Doc/library/uu.rst
+++ /dev/null
@@ -1,72 +0,0 @@
-:mod:`uu` --- Encode and decode uuencode files
-==============================================
-
-.. module:: uu
-   :synopsis: Encode and decode files in uuencode format.
-   :deprecated:
-
-.. moduleauthor:: Lance Ellinghouse
-
-**Source code:** :source:`Lib/uu.py`
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`uu` module is deprecated
-   (see :pep:`PEP 594 <594#uu-and-the-uu-encoding>` for details).
-   :mod:`base64` is a modern alternative.
-
---------------
-
-This module encodes and decodes files in uuencode format, allowing arbitrary
-binary data to be transferred over ASCII-only connections. Wherever a file
-argument is expected, the methods accept a file-like object.  For backwards
-compatibility, a string containing a pathname is also accepted, and the
-corresponding file will be opened for reading and writing; the pathname ``'-'``
-is understood to mean the standard input or output.  However, this interface is
-deprecated; it's better for the caller to open the file itself, and be sure
-that, when required, the mode is ``'rb'`` or ``'wb'`` on Windows.
-
-.. index::
-   single: Jansen, Jack
-   single: Ellinghouse, Lance
-
-This code was contributed by Lance Ellinghouse, and modified by Jack Jansen.
-
-The :mod:`uu` module defines the following functions:
-
-
-.. function:: encode(in_file, out_file, name=None, mode=None, *, backtick=False)
-
-   Uuencode file *in_file* into file *out_file*.  The uuencoded file will have
-   the header specifying *name* and *mode* as the defaults for the results of
-   decoding the file. The default defaults are taken from *in_file*, or ``'-'``
-   and ``0o666`` respectively.  If *backtick* is true, zeros are represented by
-   ``'`'`` instead of spaces.
-
-   .. versionchanged:: 3.7
-      Added the *backtick* parameter.
-
-
-.. function:: decode(in_file, out_file=None, mode=None, quiet=False)
-
-   This call decodes uuencoded file *in_file* placing the result on file
-   *out_file*. If *out_file* is a pathname, *mode* is used to set the permission
-   bits if the file must be created. Defaults for *out_file* and *mode* are taken
-   from the uuencode header.  However, if the file specified in the header already
-   exists, a :exc:`uu.Error` is raised.
-
-   :func:`decode` may print a warning to standard error if the input was produced
-   by an incorrect uuencoder and Python could recover from that error.  Setting
-   *quiet* to a true value silences this warning.
-
-
-.. exception:: Error()
-
-   Subclass of :exc:`Exception`, this can be raised by :func:`uu.decode` under
-   various situations, such as described above, but also including a badly
-   formatted header, or truncated input file.
-
-
-.. seealso::
-
-   Module :mod:`binascii`
-      Support module containing ASCII-to-binary and binary-to-ASCII conversions.
diff --git a/Doc/library/uuid.rst b/Doc/library/uuid.rst
index 94b9a432372195..e2d231da38fd9a 100644
--- a/Doc/library/uuid.rst
+++ b/Doc/library/uuid.rst
@@ -22,7 +22,7 @@ random UUID.
 Depending on support from the underlying platform, :func:`uuid1` may or may
 not return a "safe" UUID.  A safe UUID is one which is generated using
 synchronization methods that ensure no two processes can obtain the same
-UUID.  All instances of :class:`UUID` have an :attr:`is_safe` attribute
+UUID.  All instances of :class:`UUID` have an :attr:`~UUID.is_safe` attribute
 which relays any information about the UUID's safety, using this enumeration:
 
 .. class:: SafeUUID
@@ -95,25 +95,34 @@ which relays any information about the UUID's safety, using this enumeration:
    A tuple of the six integer fields of the UUID, which are also available as six
    individual attributes and two derived attributes:
 
-   +------------------------------+-------------------------------+
-   | Field                        | Meaning                       |
-   +==============================+===============================+
-   | :attr:`time_low`             | the first 32 bits of the UUID |
-   +------------------------------+-------------------------------+
-   | :attr:`time_mid`             | the next 16 bits of the UUID  |
-   +------------------------------+-------------------------------+
-   | :attr:`time_hi_version`      | the next 16 bits of the UUID  |
-   +------------------------------+-------------------------------+
-   | :attr:`clock_seq_hi_variant` | the next 8 bits of the UUID   |
-   +------------------------------+-------------------------------+
-   | :attr:`clock_seq_low`        | the next 8 bits of the UUID   |
-   +------------------------------+-------------------------------+
-   | :attr:`node`                 | the last 48 bits of the UUID  |
-   +------------------------------+-------------------------------+
-   | :attr:`time`                 | the 60-bit timestamp          |
-   +------------------------------+-------------------------------+
-   | :attr:`clock_seq`            | the 14-bit sequence number    |
-   +------------------------------+-------------------------------+
+.. list-table::
+
+   * - Field
+     - Meaning
+
+   * - .. attribute:: UUID.time_low
+     - The first 32 bits of the UUID.
+
+   * - .. attribute:: UUID.time_mid
+     - The next 16 bits of the UUID.
+
+   * - .. attribute:: UUID.time_hi_version
+     - The next 16 bits of the UUID.
+
+   * - .. attribute:: UUID.clock_seq_hi_variant
+     - The next 8 bits of the UUID.
+
+   * - .. attribute:: UUID.clock_seq_low
+     - The next 8 bits of the UUID.
+
+   * - .. attribute:: UUID.node
+     - The last 48 bits of the UUID.
+
+   * - .. attribute:: UUID.time
+     - The 60-bit timestamp.
+
+   * - .. attribute:: UUID.clock_seq
+     - The 14-bit sequence number.
 
 
 .. attribute:: UUID.hex
@@ -233,7 +242,7 @@ The :mod:`uuid` module defines the following namespace identifiers for use with
    text output format.
 
 The :mod:`uuid` module defines the following constants for the possible values
-of the :attr:`variant` attribute:
+of the :attr:`~UUID.variant` attribute:
 
 
 .. data:: RESERVED_NCS
@@ -280,25 +289,25 @@ The following options are accepted:
 
 .. program:: uuid
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    Show the help message and exit.
 
-.. cmdoption:: -u <uuid>
-               --uuid <uuid>
+.. option:: -u <uuid>
+            --uuid <uuid>
 
    Specify the function name to use to generate the uuid. By default :func:`uuid4`
    is used.
 
-.. cmdoption:: -n <namespace>
-               --namespace <namespace>
+.. option:: -n <namespace>
+            --namespace <namespace>
 
    The namespace is a ``UUID``, or ``@ns`` where ``ns`` is a well-known predefined UUID
    addressed by namespace name. Such as ``@dns``, ``@url``, ``@oid``, and ``@x500``.
    Only required for :func:`uuid3` / :func:`uuid5` functions.
 
-.. cmdoption:: -N <name>
-               --name <name>
+.. option:: -N <name>
+            --name <name>
 
    The name used as part of generating the uuid. Only required for
    :func:`uuid3` / :func:`uuid5` functions.
diff --git a/Doc/library/venv.rst b/Doc/library/venv.rst
index 9e5672545dea35..da8942c554dea1 100644
--- a/Doc/library/venv.rst
+++ b/Doc/library/venv.rst
@@ -30,6 +30,25 @@ When used from within a virtual environment, common installation tools such as
 `pip`_ will install Python packages into a virtual environment
 without needing to be told to do so explicitly.
 
+A virtual environment is (amongst other things):
+
+* Used to contain a specific Python interpreter and software libraries and
+  binaries which are needed to support a project (library or application). These
+  are by default isolated from software in other virtual environments and Python
+  interpreters and libraries installed in the operating system.
+
+* Contained in a directory, conventionally either named ``venv`` or ``.venv`` in
+  the project directory, or under a container directory for lots of virtual
+  environments, such as ``~/.virtualenvs``.
+
+* Not checked into source control systems such as Git.
+
+* Considered as disposable -- it should be simple to delete and recreate it from
+  scratch. You don't place any project code in the environment
+
+* Not considered as movable or copyable -- you just recreate the same
+  environment in the target location.
+
 See :pep:`405` for more background on Python virtual environments.
 
 .. seealso::
@@ -60,7 +79,7 @@ running from a virtual environment.
 
 A virtual environment may be "activated" using a script in its binary directory
 (``bin`` on POSIX; ``Scripts`` on Windows).
-This will prepend that directory to your :envvar:`!PATH`, so that running
+This will prepend that directory to your :envvar:`PATH`, so that running
 :program:`python` will invoke the environment's Python interpreter
 and you can run installed scripts without having to use their full path.
 The invocation of the activation script is platform-specific
@@ -100,10 +119,10 @@ In order to achieve this, scripts installed into virtual environments have
 a "shebang" line which points to the environment's Python interpreter,
 i.e. :samp:`#!/{<path-to-venv>}/bin/python`.
 This means that the script will run with that interpreter regardless of the
-value of :envvar:`!PATH`. On Windows, "shebang" line processing is supported if
+value of :envvar:`PATH`. On Windows, "shebang" line processing is supported if
 you have the :ref:`launcher` installed. Thus, double-clicking an installed
 script in a Windows Explorer window should run it with the correct interpreter
-without the environment needing to be activated or on the :envvar:`!PATH`.
+without the environment needing to be activated or on the :envvar:`PATH`.
 
 When a virtual environment has been activated, the :envvar:`!VIRTUAL_ENV`
 environment variable is set to the path of the environment.
@@ -143,7 +162,8 @@ creation according to their needs, the :class:`EnvBuilder` class.
 
 .. class:: EnvBuilder(system_site_packages=False, clear=False, \
                       symlinks=False, upgrade=False, with_pip=False, \
-                      prompt=None, upgrade_deps=False)
+                      prompt=None, upgrade_deps=False, \
+                      *, scm_ignore_files=frozenset())
 
     The :class:`EnvBuilder` class accepts the following keyword arguments on
     instantiation:
@@ -172,6 +192,12 @@ creation according to their needs, the :class:`EnvBuilder` class.
 
     * ``upgrade_deps`` -- Update the base venv modules to the latest on PyPI
 
+    * ``scm_ignore_files`` -- Create ignore files based for the specified source
+      control managers (SCM) in the iterable. Support is defined by having a
+      method named ``create_{scm}_ignore_file``. The only value supported by
+      default is ``"git"`` via :meth:`create_git_ignore_file`.
+
+
     .. versionchanged:: 3.4
        Added the ``with_pip`` parameter
 
@@ -181,6 +207,9 @@ creation according to their needs, the :class:`EnvBuilder` class.
     .. versionadded:: 3.9
        Added the ``upgrade_deps`` parameter
 
+    .. versionadded:: 3.13
+       Added the ``scm_ignore_files`` parameter
+
     Creators of third-party virtual environment tools will be free to use the
     provided :class:`EnvBuilder` class as a base class.
 
@@ -339,11 +368,18 @@ creation according to their needs, the :class:`EnvBuilder` class.
         The directories are allowed to exist (for when an existing environment
         is being upgraded).
 
+    .. method:: create_git_ignore_file(context)
+
+       Creates a ``.gitignore`` file within the virtual environment that causes
+       the entire directory to be ignored by the ``git`` source control manager.
+
+       .. versionadded:: 3.13
+
 There is also a module-level convenience function:
 
 .. function:: create(env_dir, system_site_packages=False, clear=False, \
                      symlinks=False, with_pip=False, prompt=None, \
-                     upgrade_deps=False)
+                     upgrade_deps=False, *, scm_ignore_files=frozenset())
 
     Create an :class:`EnvBuilder` with the given keyword arguments, and call its
     :meth:`~EnvBuilder.create` method with the *env_dir* argument.
@@ -359,6 +395,9 @@ There is also a module-level convenience function:
     .. versionchanged:: 3.9
        Added the ``upgrade_deps`` parameter
 
+    .. versionchanged:: 3.13
+       Added the ``scm_ignore_files`` parameter
+
 An example of extending ``EnvBuilder``
 --------------------------------------
 
diff --git a/Doc/library/warnings.rst b/Doc/library/warnings.rst
index 884de08eab1b16..a9c469707e8227 100644
--- a/Doc/library/warnings.rst
+++ b/Doc/library/warnings.rst
@@ -522,6 +522,56 @@ Available Functions
    and calls to :func:`simplefilter`.
 
 
+.. decorator:: deprecated(msg, *, category=DeprecationWarning, stacklevel=1)
+
+   Decorator to indicate that a class, function or overload is deprecated.
+
+   When this decorator is applied to an object,
+   deprecation warnings may be emitted at runtime when the object is used.
+   :term:`static type checkers <static type checker>`
+   will also generate a diagnostic on usage of the deprecated object.
+
+   Usage::
+
+      from warnings import deprecated
+      from typing import overload
+
+      @deprecated("Use B instead")
+      class A:
+          pass
+
+      @deprecated("Use g instead")
+      def f():
+          pass
+
+      @overload
+      @deprecated("int support is deprecated")
+      def g(x: int) -> int: ...
+      @overload
+      def g(x: str) -> int: ...
+
+   The warning specified by *category* will be emitted at runtime
+   on use of deprecated objects. For functions, that happens on calls;
+   for classes, on instantiation and on creation of subclasses.
+   If the *category* is ``None``, no warning is emitted at runtime.
+   The *stacklevel* determines where the
+   warning is emitted. If it is ``1`` (the default), the warning
+   is emitted at the direct caller of the deprecated object; if it
+   is higher, it is emitted further up the stack.
+   Static type checker behavior is not affected by the *category*
+   and *stacklevel* arguments.
+
+   The deprecation message passed to the decorator is saved in the
+   ``__deprecated__`` attribute on the decorated object.
+   If applied to an overload, the decorator
+   must be after the :func:`@overload <typing.overload>` decorator
+   for the attribute to exist on the overload as returned by
+   :func:`typing.get_overloads`.
+
+   .. versionadded:: 3.13
+      See :pep:`702`.
+
+
 Available Context Managers
 --------------------------
 
diff --git a/Doc/library/wave.rst b/Doc/library/wave.rst
index 04a28d97d619eb..55b029bc742b24 100644
--- a/Doc/library/wave.rst
+++ b/Doc/library/wave.rst
@@ -11,8 +11,9 @@
 
 --------------
 
-The :mod:`wave` module provides a convenient interface to the WAV sound format.
-Only PCM encoded wave files are supported.
+The :mod:`wave` module provides a convenient interface to the Waveform Audio
+"WAVE" (or "WAV") file format. Only uncompressed PCM encoded wave files are
+supported.
 
 .. versionchanged:: 3.12
 
@@ -41,13 +42,12 @@ The :mod:`wave` module defines the following function and exception:
    value for *mode*.
 
    If you pass in a file-like object, the wave object will not close it when its
-   :meth:`close` method is called; it is the caller's responsibility to close
+   ``close()`` method is called; it is the caller's responsibility to close
    the file object.
 
    The :func:`.open` function may be used in a :keyword:`with` statement.  When
-   the :keyword:`!with` block completes, the :meth:`Wave_read.close()
-   <wave.Wave_read.close>` or :meth:`Wave_write.close()
-   <wave.Wave_write.close()>` method is called.
+   the :keyword:`!with` block completes, the :meth:`Wave_read.close()` or
+   :meth:`Wave_write.close()` method is called.
 
    .. versionchanged:: 3.4
       Added support for unseekable files.
@@ -63,87 +63,99 @@ The :mod:`wave` module defines the following function and exception:
 Wave_read Objects
 -----------------
 
-Wave_read objects, as returned by :func:`.open`, have the following methods:
+.. class:: Wave_read
 
+   Read a WAV file.
 
-.. method:: Wave_read.close()
+   Wave_read objects, as returned by :func:`.open`, have the following methods:
 
-   Close the stream if it was opened by :mod:`wave`, and make the instance
-   unusable.  This is called automatically on object collection.
 
+   .. method:: close()
 
-.. method:: Wave_read.getnchannels()
+      Close the stream if it was opened by :mod:`wave`, and make the instance
+      unusable.  This is called automatically on object collection.
 
-   Returns number of audio channels (``1`` for mono, ``2`` for stereo).
 
+   .. method:: getnchannels()
 
-.. method:: Wave_read.getsampwidth()
+      Returns number of audio channels (``1`` for mono, ``2`` for stereo).
 
-   Returns sample width in bytes.
 
+   .. method:: getsampwidth()
 
-.. method:: Wave_read.getframerate()
+      Returns sample width in bytes.
 
-   Returns sampling frequency.
 
+   .. method:: getframerate()
 
-.. method:: Wave_read.getnframes()
+      Returns sampling frequency.
 
-   Returns number of audio frames.
 
+   .. method:: getnframes()
 
-.. method:: Wave_read.getcomptype()
+      Returns number of audio frames.
 
-   Returns compression type (``'NONE'`` is the only supported type).
 
+   .. method:: getcomptype()
 
-.. method:: Wave_read.getcompname()
+      Returns compression type (``'NONE'`` is the only supported type).
 
-   Human-readable version of :meth:`getcomptype`. Usually ``'not compressed'``
-   parallels ``'NONE'``.
 
+   .. method:: getcompname()
 
-.. method:: Wave_read.getparams()
+      Human-readable version of :meth:`getcomptype`. Usually ``'not compressed'``
+      parallels ``'NONE'``.
 
-   Returns a :func:`~collections.namedtuple` ``(nchannels, sampwidth,
-   framerate, nframes, comptype, compname)``, equivalent to output of the
-   :meth:`get\*` methods.
 
+   .. method:: getparams()
 
-.. method:: Wave_read.readframes(n)
+      Returns a :func:`~collections.namedtuple` ``(nchannels, sampwidth,
+      framerate, nframes, comptype, compname)``, equivalent to output of the
+      ``get*()`` methods.
 
-   Reads and returns at most *n* frames of audio, as a :class:`bytes` object.
 
+   .. method:: readframes(n)
 
-.. method:: Wave_read.rewind()
+      Reads and returns at most *n* frames of audio, as a :class:`bytes` object.
 
-   Rewind the file pointer to the beginning of the audio stream.
 
-The following two methods are defined for compatibility with the :mod:`aifc`
-module, and don't do anything interesting.
+   .. method:: rewind()
 
+      Rewind the file pointer to the beginning of the audio stream.
 
-.. method:: Wave_read.getmarkers()
+   The following two methods are defined for compatibility with the old :mod:`!aifc`
+   module, and don't do anything interesting.
 
-   Returns ``None``.
 
+   .. method:: getmarkers()
 
-.. method:: Wave_read.getmark(id)
+      Returns ``None``.
 
-   Raise an error.
+      .. deprecated-removed:: 3.13 3.15
+         The method only existed for compatibility with the :mod:`!aifc` module
+         which has been removed in Python 3.13.
 
-The following two methods define a term "position" which is compatible between
-them, and is otherwise implementation dependent.
 
+   .. method:: getmark(id)
 
-.. method:: Wave_read.setpos(pos)
+      Raise an error.
 
-   Set the file pointer to the specified position.
+      .. deprecated-removed:: 3.13 3.15
+         The method only existed for compatibility with the :mod:`!aifc` module
+         which has been removed in Python 3.13.
 
+   The following two methods define a term "position" which is compatible between
+   them, and is otherwise implementation dependent.
 
-.. method:: Wave_read.tell()
 
-   Return current file pointer position.
+   .. method:: setpos(pos)
+
+      Set the file pointer to the specified position.
+
+
+   .. method:: tell()
+
+      Return current file pointer position.
 
 
 .. _wave-write-objects:
@@ -151,97 +163,100 @@ them, and is otherwise implementation dependent.
 Wave_write Objects
 ------------------
 
-For seekable output streams, the ``wave`` header will automatically be updated
-to reflect the number of frames actually written.  For unseekable streams, the
-*nframes* value must be accurate when the first frame data is written.  An
-accurate *nframes* value can be achieved either by calling
-:meth:`~Wave_write.setnframes` or :meth:`~Wave_write.setparams` with the number
-of frames that will be written before :meth:`~Wave_write.close` is called and
-then using :meth:`~Wave_write.writeframesraw` to write the frame data, or by
-calling :meth:`~Wave_write.writeframes` with all of the frame data to be
-written.  In the latter case :meth:`~Wave_write.writeframes` will calculate
-the number of frames in the data and set *nframes* accordingly before writing
-the frame data.
+.. class:: Wave_write
 
-Wave_write objects, as returned by :func:`.open`, have the following methods:
+   Write a WAV file.
 
-.. versionchanged:: 3.4
-   Added support for unseekable files.
+   Wave_write objects, as returned by :func:`.open`.
 
+   For seekable output streams, the ``wave`` header will automatically be updated
+   to reflect the number of frames actually written.  For unseekable streams, the
+   *nframes* value must be accurate when the first frame data is written.  An
+   accurate *nframes* value can be achieved either by calling
+   :meth:`setnframes` or :meth:`setparams` with the number
+   of frames that will be written before :meth:`close` is called and
+   then using :meth:`writeframesraw` to write the frame data, or by
+   calling :meth:`writeframes` with all of the frame data to be
+   written.  In the latter case :meth:`writeframes` will calculate
+   the number of frames in the data and set *nframes* accordingly before writing
+   the frame data.
 
-.. method:: Wave_write.close()
+   .. versionchanged:: 3.4
+      Added support for unseekable files.
 
-   Make sure *nframes* is correct, and close the file if it was opened by
-   :mod:`wave`.  This method is called upon object collection.  It will raise
-   an exception if the output stream is not seekable and *nframes* does not
-   match the number of frames actually written.
+   Wave_write objects have the following methods:
 
+   .. method:: close()
 
-.. method:: Wave_write.setnchannels(n)
+      Make sure *nframes* is correct, and close the file if it was opened by
+      :mod:`wave`.  This method is called upon object collection.  It will raise
+      an exception if the output stream is not seekable and *nframes* does not
+      match the number of frames actually written.
 
-   Set the number of channels.
 
+   .. method:: setnchannels(n)
 
-.. method:: Wave_write.setsampwidth(n)
+      Set the number of channels.
 
-   Set the sample width to *n* bytes.
 
+   .. method:: setsampwidth(n)
 
-.. method:: Wave_write.setframerate(n)
+      Set the sample width to *n* bytes.
 
-   Set the frame rate to *n*.
 
-   .. versionchanged:: 3.2
-      A non-integral input to this method is rounded to the nearest
-      integer.
+   .. method:: setframerate(n)
 
+      Set the frame rate to *n*.
 
-.. method:: Wave_write.setnframes(n)
+      .. versionchanged:: 3.2
+         A non-integral input to this method is rounded to the nearest
+         integer.
 
-   Set the number of frames to *n*.  This will be changed later if the number
-   of frames actually written is different (this update attempt will
-   raise an error if the output stream is not seekable).
 
+   .. method:: setnframes(n)
 
-.. method:: Wave_write.setcomptype(type, name)
+      Set the number of frames to *n*.  This will be changed later if the number
+      of frames actually written is different (this update attempt will
+      raise an error if the output stream is not seekable).
 
-   Set the compression type and description. At the moment, only compression type
-   ``NONE`` is supported, meaning no compression.
 
+   .. method:: setcomptype(type, name)
 
-.. method:: Wave_write.setparams(tuple)
+      Set the compression type and description. At the moment, only compression type
+      ``NONE`` is supported, meaning no compression.
 
-   The *tuple* should be ``(nchannels, sampwidth, framerate, nframes, comptype,
-   compname)``, with values valid for the :meth:`set\*` methods.  Sets all
-   parameters.
 
+   .. method:: setparams(tuple)
 
-.. method:: Wave_write.tell()
+      The *tuple* should be ``(nchannels, sampwidth, framerate, nframes, comptype,
+      compname)``, with values valid for the ``set*()`` methods.  Sets all
+      parameters.
 
-   Return current position in the file, with the same disclaimer for the
-   :meth:`Wave_read.tell` and :meth:`Wave_read.setpos` methods.
 
+   .. method:: tell()
 
-.. method:: Wave_write.writeframesraw(data)
+      Return current position in the file, with the same disclaimer for the
+      :meth:`Wave_read.tell` and :meth:`Wave_read.setpos` methods.
 
-   Write audio frames, without correcting *nframes*.
 
-   .. versionchanged:: 3.4
-      Any :term:`bytes-like object` is now accepted.
+   .. method:: writeframesraw(data)
 
+      Write audio frames, without correcting *nframes*.
 
-.. method:: Wave_write.writeframes(data)
+      .. versionchanged:: 3.4
+         Any :term:`bytes-like object` is now accepted.
 
-   Write audio frames and make sure *nframes* is correct.  It will raise an
-   error if the output stream is not seekable and the total number of frames
-   that have been written after *data* has been written does not match the
-   previously set value for *nframes*.
 
-   .. versionchanged:: 3.4
-      Any :term:`bytes-like object` is now accepted.
+   .. method:: writeframes(data)
 
+      Write audio frames and make sure *nframes* is correct.  It will raise an
+      error if the output stream is not seekable and the total number of frames
+      that have been written after *data* has been written does not match the
+      previously set value for *nframes*.
 
-Note that it is invalid to set any parameters after calling :meth:`writeframes`
-or :meth:`writeframesraw`, and any attempt to do so will raise
-:exc:`wave.Error`.
+      .. versionchanged:: 3.4
+         Any :term:`bytes-like object` is now accepted.
 
+      Note that it is invalid to set any parameters after calling :meth:`writeframes`
+      or :meth:`writeframesraw`, and any attempt to do so will raise
+      :exc:`wave.Error`.
diff --git a/Doc/library/weakref.rst b/Doc/library/weakref.rst
index 1406b663c6a8e2..d6e062df945c64 100644
--- a/Doc/library/weakref.rst
+++ b/Doc/library/weakref.rst
@@ -111,7 +111,7 @@ See :ref:`__slots__ documentation <slots>` for details.
 
    Exceptions raised by the callback will be noted on the standard error output,
    but cannot be propagated; they are handled in exactly the same way as exceptions
-   raised from an object's :meth:`__del__` method.
+   raised from an object's :meth:`~object.__del__` method.
 
    Weak references are :term:`hashable` if the *object* is hashable.  They will
    maintain their hash value even after the *object* was deleted.  If
@@ -221,8 +221,7 @@ than needed.
       Added support for ``|`` and ``|=`` operators, as specified in :pep:`584`.
 
 :class:`WeakValueDictionary` objects have an additional method that has the
-same issues as the :meth:`keyrefs` method of :class:`WeakKeyDictionary`
-objects.
+same issues as the :meth:`WeakKeyDictionary.keyrefs` method.
 
 
 .. method:: WeakValueDictionary.valuerefs()
@@ -281,7 +280,7 @@ objects.
    Exceptions raised by finalizer callbacks during garbage collection
    will be shown on the standard error output, but cannot be
    propagated.  They are handled in the same way as exceptions raised
-   from an object's :meth:`__del__` method or a weak reference's
+   from an object's :meth:`~object.__del__` method or a weak reference's
    callback.
 
    When the program exits, each remaining live finalizer is called
@@ -523,18 +522,18 @@ is still alive.  For instance
    obj dead or exiting
 
 
-Comparing finalizers with :meth:`__del__` methods
--------------------------------------------------
+Comparing finalizers with :meth:`~object.__del__` methods
+---------------------------------------------------------
 
 Suppose we want to create a class whose instances represent temporary
 directories.  The directories should be deleted with their contents
 when the first of the following events occurs:
 
 * the object is garbage collected,
-* the object's :meth:`remove` method is called, or
+* the object's :meth:`!remove` method is called, or
 * the program exits.
 
-We might try to implement the class using a :meth:`__del__` method as
+We might try to implement the class using a :meth:`~object.__del__` method as
 follows::
 
     class TempDir:
@@ -553,12 +552,12 @@ follows::
         def __del__(self):
             self.remove()
 
-Starting with Python 3.4, :meth:`__del__` methods no longer prevent
+Starting with Python 3.4, :meth:`~object.__del__` methods no longer prevent
 reference cycles from being garbage collected, and module globals are
 no longer forced to :const:`None` during :term:`interpreter shutdown`.
 So this code should work without any issues on CPython.
 
-However, handling of :meth:`__del__` methods is notoriously implementation
+However, handling of :meth:`~object.__del__` methods is notoriously implementation
 specific, since it depends on internal details of the interpreter's garbage
 collector implementation.
 
diff --git a/Doc/library/webbrowser.rst b/Doc/library/webbrowser.rst
index 61db8042093627..4667b81e38ada2 100644
--- a/Doc/library/webbrowser.rst
+++ b/Doc/library/webbrowser.rst
@@ -111,41 +111,41 @@ for the controller classes, all defined in this module.
 +------------------------+-----------------------------------------+-------+
 | Type Name              | Class Name                              | Notes |
 +========================+=========================================+=======+
-| ``'mozilla'``          | :class:`Mozilla('mozilla')`             |       |
+| ``'mozilla'``          | ``Mozilla('mozilla')``                  |       |
 +------------------------+-----------------------------------------+-------+
-| ``'firefox'``          | :class:`Mozilla('mozilla')`             |       |
+| ``'firefox'``          | ``Mozilla('mozilla')``                  |       |
 +------------------------+-----------------------------------------+-------+
-| ``'epiphany'``         | :class:`Epiphany('epiphany')`           |       |
+| ``'epiphany'``         | ``Epiphany('epiphany')``                |       |
 +------------------------+-----------------------------------------+-------+
-| ``'kfmclient'``        | :class:`Konqueror()`                    | \(1)  |
+| ``'kfmclient'``        | ``Konqueror()``                         | \(1)  |
 +------------------------+-----------------------------------------+-------+
-| ``'konqueror'``        | :class:`Konqueror()`                    | \(1)  |
+| ``'konqueror'``        | ``Konqueror()``                         | \(1)  |
 +------------------------+-----------------------------------------+-------+
-| ``'kfm'``              | :class:`Konqueror()`                    | \(1)  |
+| ``'kfm'``              | ``Konqueror()``                         | \(1)  |
 +------------------------+-----------------------------------------+-------+
-| ``'opera'``            | :class:`Opera()`                        |       |
+| ``'opera'``            | ``Opera()``                             |       |
 +------------------------+-----------------------------------------+-------+
-| ``'links'``            | :class:`GenericBrowser('links')`        |       |
+| ``'links'``            | ``GenericBrowser('links')``             |       |
 +------------------------+-----------------------------------------+-------+
-| ``'elinks'``           | :class:`Elinks('elinks')`               |       |
+| ``'elinks'``           | ``Elinks('elinks')``                    |       |
 +------------------------+-----------------------------------------+-------+
-| ``'lynx'``             | :class:`GenericBrowser('lynx')`         |       |
+| ``'lynx'``             | ``GenericBrowser('lynx')``              |       |
 +------------------------+-----------------------------------------+-------+
-| ``'w3m'``              | :class:`GenericBrowser('w3m')`          |       |
+| ``'w3m'``              | ``GenericBrowser('w3m')``               |       |
 +------------------------+-----------------------------------------+-------+
-| ``'windows-default'``  | :class:`WindowsDefault`                 | \(2)  |
+| ``'windows-default'``  | ``WindowsDefault``                      | \(2)  |
 +------------------------+-----------------------------------------+-------+
-| ``'macosx'``           | :class:`MacOSXOSAScript('default')`     | \(3)  |
+| ``'macosx'``           | ``MacOSXOSAScript('default')``          | \(3)  |
 +------------------------+-----------------------------------------+-------+
-| ``'safari'``           | :class:`MacOSXOSAScript('safari')`      | \(3)  |
+| ``'safari'``           | ``MacOSXOSAScript('safari')``           | \(3)  |
 +------------------------+-----------------------------------------+-------+
-| ``'google-chrome'``    | :class:`Chrome('google-chrome')`        |       |
+| ``'google-chrome'``    | ``Chrome('google-chrome')``             |       |
 +------------------------+-----------------------------------------+-------+
-| ``'chrome'``           | :class:`Chrome('chrome')`               |       |
+| ``'chrome'``           | ``Chrome('chrome')``                    |       |
 +------------------------+-----------------------------------------+-------+
-| ``'chromium'``         | :class:`Chromium('chromium')`           |       |
+| ``'chromium'``         | ``Chromium('chromium')``                |       |
 +------------------------+-----------------------------------------+-------+
-| ``'chromium-browser'`` | :class:`Chromium('chromium-browser')`   |       |
+| ``'chromium-browser'`` | ``Chromium('chromium-browser')``        |       |
 +------------------------+-----------------------------------------+-------+
 
 Notes:
@@ -153,7 +153,7 @@ Notes:
 (1)
    "Konqueror" is the file manager for the KDE desktop environment for Unix, and
    only makes sense to use if KDE is running.  Some way of reliably detecting KDE
-   would be nice; the :envvar:`KDEDIR` variable is not sufficient.  Note also that
+   would be nice; the :envvar:`!KDEDIR` variable is not sufficient.  Note also that
    the name "kfm" is used even when using the :program:`konqueror` command with KDE
    2 --- the implementation selects the best strategy for running Konqueror.
 
@@ -163,6 +163,11 @@ Notes:
 (3)
    Only on macOS platform.
 
+.. versionadded:: 3.2
+   A new :class:`!MacOSXOSAScript` class has been added
+   and is used on Mac instead of the previous :class:`!MacOSX` class.
+   This adds support for opening browsers not currently set as the OS default.
+
 .. versionadded:: 3.3
    Support for Chrome/Chromium has been added.
 
@@ -171,9 +176,6 @@ Notes:
    Removed browsers include Grail, Mosaic, Netscape, Galeon,
    Skipstone, Iceape, and Firefox versions 35 and below.
 
-.. deprecated-removed:: 3.11 3.13
-   :class:`MacOSX` is deprecated, use :class:`MacOSXOSAScript` instead.
-
 Here are some simple examples::
 
    url = 'https://docs.python.org/'
@@ -194,7 +196,7 @@ Browser controllers provide these methods which parallel three of the
 module-level convenience functions:
 
 
-.. attribute:: name
+.. attribute:: controller.name
 
    System-dependent name for the browser.
 
diff --git a/Doc/library/winreg.rst b/Doc/library/winreg.rst
index 4ab671817710dd..06bd4d87eb03c6 100644
--- a/Doc/library/winreg.rst
+++ b/Doc/library/winreg.rst
@@ -288,7 +288,7 @@ This module offers the following functions:
    table (FAT) file system, the filename may not have an extension.
 
    A call to :func:`LoadKey` fails if the calling process does not have the
-   :const:`SE_RESTORE_PRIVILEGE` privilege.  Note that privileges are different
+   :c:data:`!SE_RESTORE_PRIVILEGE` privilege.  Note that privileges are different
    from permissions -- see the `RegLoadKey documentation
    <https://msdn.microsoft.com/en-us/library/ms724889%28v=VS.85%29.aspx>`__ for
    more details.
@@ -414,7 +414,7 @@ This module offers the following functions:
 
    If *key* represents a key on a remote computer, the path described by
    *file_name* is relative to the remote computer. The caller of this method must
-   possess the :const:`SeBackupPrivilege` security privilege.  Note that
+   possess the **SeBackupPrivilege** security privilege.  Note that
    privileges are different than permissions -- see the
    `Conflicts Between User Rights and Permissions documentation
    <https://msdn.microsoft.com/en-us/library/ms724878%28v=VS.85%29.aspx>`__
@@ -536,7 +536,7 @@ This module offers the following functions:
 Constants
 ------------------
 
-The following constants are defined for use in many :mod:`_winreg` functions.
+The following constants are defined for use in many :mod:`winreg` functions.
 
 .. _hkey-constants:
 
@@ -745,7 +745,7 @@ All registry functions in this module return one of these objects.
 All registry functions in this module which accept a handle object also accept
 an integer, however, use of the handle object is encouraged.
 
-Handle objects provide semantics for :meth:`__bool__` -- thus ::
+Handle objects provide semantics for :meth:`~object.__bool__` -- thus ::
 
    if handle:
        print("Yes")
diff --git a/Doc/library/winsound.rst b/Doc/library/winsound.rst
index 372f792a0f938e..370c5216652ba7 100644
--- a/Doc/library/winsound.rst
+++ b/Doc/library/winsound.rst
@@ -24,7 +24,7 @@ provided by Windows platforms.  It includes functions and several constants.
 
 .. function:: PlaySound(sound, flags)
 
-   Call the underlying :c:func:`PlaySound` function from the Platform API.  The
+   Call the underlying :c:func:`!PlaySound` function from the Platform API.  The
    *sound* parameter may be a filename, a system sound alias, audio data as a
    :term:`bytes-like object`, or ``None``.  Its
    interpretation depends on the value of *flags*, which can be a bitwise ORed
@@ -35,7 +35,7 @@ provided by Windows platforms.  It includes functions and several constants.
 
 .. function:: MessageBeep(type=MB_OK)
 
-   Call the underlying :c:func:`MessageBeep` function from the Platform API.  This
+   Call the underlying :c:func:`!MessageBeep` function from the Platform API.  This
    plays a sound as specified in the registry.  The *type* argument specifies which
    sound to play; possible values are ``-1``, ``MB_ICONASTERISK``,
    ``MB_ICONEXCLAMATION``, ``MB_ICONHAND``, ``MB_ICONQUESTION``, and ``MB_OK``, all
diff --git a/Doc/library/wsgiref.rst b/Doc/library/wsgiref.rst
index 39a4c1ba142338..be9e56b04c1fbf 100644
--- a/Doc/library/wsgiref.rst
+++ b/Doc/library/wsgiref.rst
@@ -180,7 +180,7 @@ also provides these miscellaneous utilities:
           print(chunk)
 
    .. versionchanged:: 3.11
-      Support for :meth:`__getitem__` method has been removed.
+      Support for :meth:`~object.__getitem__` method has been removed.
 
 
 :mod:`wsgiref.headers` -- WSGI response header tools
@@ -201,7 +201,7 @@ manipulation of WSGI response headers using a mapping-like interface.
    an empty list.
 
    :class:`Headers` objects support typical mapping operations including
-   :meth:`__getitem__`, :meth:`get`, :meth:`__setitem__`, :meth:`setdefault`,
+   :meth:`~object.__getitem__`, :meth:`get`, :meth:`__setitem__`, :meth:`setdefault`,
    :meth:`__delitem__` and :meth:`__contains__`.  For each of
    these methods, the key is the header name (treated case-insensitively), and the
    value is the first value associated with that header name.  Setting a header
diff --git a/Doc/library/xdrlib.rst b/Doc/library/xdrlib.rst
deleted file mode 100644
index 39e75573260c50..00000000000000
--- a/Doc/library/xdrlib.rst
+++ /dev/null
@@ -1,283 +0,0 @@
-:mod:`xdrlib` --- Encode and decode XDR data
-============================================
-
-.. module:: xdrlib
-   :synopsis: Encoders and decoders for the External Data Representation (XDR).
-   :deprecated:
-
-**Source code:** :source:`Lib/xdrlib.py`
-
-.. index::
-   single: XDR
-   single: External Data Representation
-
-.. deprecated-removed:: 3.11 3.13
-   The :mod:`xdrlib` module is deprecated
-   (see :pep:`PEP 594 <594#xdrlib>` for details).
-
---------------
-
-The :mod:`xdrlib` module supports the External Data Representation Standard as
-described in :rfc:`1014`, written by Sun Microsystems, Inc. June 1987.  It
-supports most of the data types described in the RFC.
-
-The :mod:`xdrlib` module defines two classes, one for packing variables into XDR
-representation, and another for unpacking from XDR representation.  There are
-also two exception classes.
-
-
-.. class:: Packer()
-
-   :class:`Packer` is the class for packing data into XDR representation. The
-   :class:`Packer` class is instantiated with no arguments.
-
-
-.. class:: Unpacker(data)
-
-   ``Unpacker`` is the complementary class which unpacks XDR data values from a
-   string buffer.  The input buffer is given as *data*.
-
-
-.. seealso::
-
-   :rfc:`1014` - XDR: External Data Representation Standard
-      This RFC defined the encoding of data which was XDR at the time this module was
-      originally written.  It has apparently been obsoleted by :rfc:`1832`.
-
-   :rfc:`1832` - XDR: External Data Representation Standard
-      Newer RFC that provides a revised definition of XDR.
-
-
-.. _xdr-packer-objects:
-
-Packer Objects
---------------
-
-:class:`Packer` instances have the following methods:
-
-
-.. method:: Packer.get_buffer()
-
-   Returns the current pack buffer as a string.
-
-
-.. method:: Packer.reset()
-
-   Resets the pack buffer to the empty string.
-
-In general, you can pack any of the most common XDR data types by calling the
-appropriate ``pack_type()`` method.  Each method takes a single argument, the
-value to pack.  The following simple data type packing methods are supported:
-:meth:`pack_uint`, :meth:`pack_int`, :meth:`pack_enum`, :meth:`pack_bool`,
-:meth:`pack_uhyper`, and :meth:`pack_hyper`.
-
-
-.. method:: Packer.pack_float(value)
-
-   Packs the single-precision floating point number *value*.
-
-
-.. method:: Packer.pack_double(value)
-
-   Packs the double-precision floating point number *value*.
-
-The following methods support packing strings, bytes, and opaque data:
-
-
-.. method:: Packer.pack_fstring(n, s)
-
-   Packs a fixed length string, *s*.  *n* is the length of the string but it is
-   *not* packed into the data buffer.  The string is padded with null bytes if
-   necessary to guaranteed 4 byte alignment.
-
-
-.. method:: Packer.pack_fopaque(n, data)
-
-   Packs a fixed length opaque data stream, similarly to :meth:`pack_fstring`.
-
-
-.. method:: Packer.pack_string(s)
-
-   Packs a variable length string, *s*.  The length of the string is first packed
-   as an unsigned integer, then the string data is packed with
-   :meth:`pack_fstring`.
-
-
-.. method:: Packer.pack_opaque(data)
-
-   Packs a variable length opaque data string, similarly to :meth:`pack_string`.
-
-
-.. method:: Packer.pack_bytes(bytes)
-
-   Packs a variable length byte stream, similarly to :meth:`pack_string`.
-
-The following methods support packing arrays and lists:
-
-
-.. method:: Packer.pack_list(list, pack_item)
-
-   Packs a *list* of homogeneous items.  This method is useful for lists with an
-   indeterminate size; i.e. the size is not available until the entire list has
-   been walked.  For each item in the list, an unsigned integer ``1`` is packed
-   first, followed by the data value from the list.  *pack_item* is the function
-   that is called to pack the individual item.  At the end of the list, an unsigned
-   integer ``0`` is packed.
-
-   For example, to pack a list of integers, the code might appear like this::
-
-      import xdrlib
-      p = xdrlib.Packer()
-      p.pack_list([1, 2, 3], p.pack_int)
-
-
-.. method:: Packer.pack_farray(n, array, pack_item)
-
-   Packs a fixed length list (*array*) of homogeneous items.  *n* is the length of
-   the list; it is *not* packed into the buffer, but a :exc:`ValueError` exception
-   is raised if ``len(array)`` is not equal to *n*.  As above, *pack_item* is the
-   function used to pack each element.
-
-
-.. method:: Packer.pack_array(list, pack_item)
-
-   Packs a variable length *list* of homogeneous items.  First, the length of the
-   list is packed as an unsigned integer, then each element is packed as in
-   :meth:`pack_farray` above.
-
-
-.. _xdr-unpacker-objects:
-
-Unpacker Objects
-----------------
-
-The :class:`Unpacker` class offers the following methods:
-
-
-.. method:: Unpacker.reset(data)
-
-   Resets the string buffer with the given *data*.
-
-
-.. method:: Unpacker.get_position()
-
-   Returns the current unpack position in the data buffer.
-
-
-.. method:: Unpacker.set_position(position)
-
-   Sets the data buffer unpack position to *position*.  You should be careful about
-   using :meth:`get_position` and :meth:`set_position`.
-
-
-.. method:: Unpacker.get_buffer()
-
-   Returns the current unpack data buffer as a string.
-
-
-.. method:: Unpacker.done()
-
-   Indicates unpack completion.  Raises an :exc:`Error` exception if all of the
-   data has not been unpacked.
-
-In addition, every data type that can be packed with a :class:`Packer`, can be
-unpacked with an :class:`Unpacker`.  Unpacking methods are of the form
-``unpack_type()``, and take no arguments.  They return the unpacked object.
-
-
-.. method:: Unpacker.unpack_float()
-
-   Unpacks a single-precision floating point number.
-
-
-.. method:: Unpacker.unpack_double()
-
-   Unpacks a double-precision floating point number, similarly to
-   :meth:`unpack_float`.
-
-In addition, the following methods unpack strings, bytes, and opaque data:
-
-
-.. method:: Unpacker.unpack_fstring(n)
-
-   Unpacks and returns a fixed length string.  *n* is the number of characters
-   expected.  Padding with null bytes to guaranteed 4 byte alignment is assumed.
-
-
-.. method:: Unpacker.unpack_fopaque(n)
-
-   Unpacks and returns a fixed length opaque data stream, similarly to
-   :meth:`unpack_fstring`.
-
-
-.. method:: Unpacker.unpack_string()
-
-   Unpacks and returns a variable length string.  The length of the string is first
-   unpacked as an unsigned integer, then the string data is unpacked with
-   :meth:`unpack_fstring`.
-
-
-.. method:: Unpacker.unpack_opaque()
-
-   Unpacks and returns a variable length opaque data string, similarly to
-   :meth:`unpack_string`.
-
-
-.. method:: Unpacker.unpack_bytes()
-
-   Unpacks and returns a variable length byte stream, similarly to
-   :meth:`unpack_string`.
-
-The following methods support unpacking arrays and lists:
-
-
-.. method:: Unpacker.unpack_list(unpack_item)
-
-   Unpacks and returns a list of homogeneous items.  The list is unpacked one
-   element at a time by first unpacking an unsigned integer flag.  If the flag is
-   ``1``, then the item is unpacked and appended to the list.  A flag of ``0``
-   indicates the end of the list.  *unpack_item* is the function that is called to
-   unpack the items.
-
-
-.. method:: Unpacker.unpack_farray(n, unpack_item)
-
-   Unpacks and returns (as a list) a fixed length array of homogeneous items.  *n*
-   is number of list elements to expect in the buffer. As above, *unpack_item* is
-   the function used to unpack each element.
-
-
-.. method:: Unpacker.unpack_array(unpack_item)
-
-   Unpacks and returns a variable length *list* of homogeneous items. First, the
-   length of the list is unpacked as an unsigned integer, then each element is
-   unpacked as in :meth:`unpack_farray` above.
-
-
-.. _xdr-exceptions:
-
-Exceptions
-----------
-
-Exceptions in this module are coded as class instances:
-
-
-.. exception:: Error
-
-   The base exception class.  :exc:`Error` has a single public attribute
-   :attr:`msg` containing the description of the error.
-
-
-.. exception:: ConversionError
-
-   Class derived from :exc:`Error`.  Contains no additional instance variables.
-
-Here is an example of how you would catch one of these exceptions::
-
-   import xdrlib
-   p = xdrlib.Packer()
-   try:
-       p.pack_double(8.01)
-   except xdrlib.ConversionError as instance:
-       print('packing the double failed:', instance.msg)
-
diff --git a/Doc/library/xml.dom.pulldom.rst b/Doc/library/xml.dom.pulldom.rst
index d1df465a598e53..843c2fd7fdb937 100644
--- a/Doc/library/xml.dom.pulldom.rst
+++ b/Doc/library/xml.dom.pulldom.rst
@@ -115,7 +115,7 @@ DOMEventStream Objects
 .. class:: DOMEventStream(stream, parser, bufsize)
 
    .. versionchanged:: 3.11
-      Support for :meth:`__getitem__` method has been removed.
+      Support for :meth:`~object.__getitem__` method has been removed.
 
    .. method:: getEvent()
 
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index f9290f528e5555..57cfbb8d92244b 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -17,7 +17,7 @@ for parsing and creating XML data.
    This module will use a fast implementation whenever available.
 
 .. deprecated:: 3.3
-   The :mod:`xml.etree.cElementTree` module is deprecated.
+   The :mod:`!xml.etree.cElementTree` module is deprecated.
 
 
 .. warning::
@@ -154,6 +154,7 @@ elements, call :meth:`XMLPullParser.read_events`.  Here is an example::
    ...     print(elem.tag, 'text=', elem.text)
    ...
    end
+   mytag text= sometext more text
 
 The obvious use case is applications that operate in a non-blocking fashion
 where the XML data is being received from a socket or read incrementally from
@@ -621,7 +622,9 @@ Functions
    *parser* is an optional parser instance.  If not given, the standard
    :class:`XMLParser` parser is used.  *parser* must be a subclass of
    :class:`XMLParser` and can only use the default :class:`TreeBuilder` as a
-   target.  Returns an :term:`iterator` providing ``(event, elem)`` pairs.
+   target. Returns an :term:`iterator` providing ``(event, elem)`` pairs;
+   it has a ``root`` attribute that references the root element of the
+   resulting XML tree once *source* is fully read.
 
    Note that while :func:`iterparse` builds the tree incrementally, it issues
    blocking reads on *source* (or the file it names).  As such, it's unsuitable
@@ -825,6 +828,8 @@ Reference
 Functions
 ^^^^^^^^^
 
+.. module:: xml.etree.ElementInclude
+
 .. function:: xml.etree.ElementInclude.default_loader( href, parse, encoding=None)
    :module:
 
@@ -862,6 +867,9 @@ Functions
 Element Objects
 ^^^^^^^^^^^^^^^
 
+.. module:: xml.etree.ElementTree
+   :noindex:
+
 .. class:: Element(tag, attrib={}, **extra)
 
    Element class.  This class defines the Element interface, and provides a
diff --git a/Doc/library/xml.rst b/Doc/library/xml.rst
index 20b0905bb1093a..909022ea4ba6a4 100644
--- a/Doc/library/xml.rst
+++ b/Doc/library/xml.rst
@@ -73,12 +73,12 @@ decompression bomb         Safe                Safe                Safe
 1. Expat 2.4.1 and newer is not vulnerable to the "billion laughs" and
    "quadratic blowup" vulnerabilities. Items still listed as vulnerable due to
    potential reliance on system-provided libraries. Check
-   :data:`pyexpat.EXPAT_VERSION`.
+   :const:`!pyexpat.EXPAT_VERSION`.
 2. :mod:`xml.etree.ElementTree` doesn't expand external entities and raises a
-   :exc:`ParserError` when an entity occurs.
+   :exc:`~xml.etree.ElementTree.ParseError` when an entity occurs.
 3. :mod:`xml.dom.minidom` doesn't expand external entities and simply returns
    the unexpanded entity verbatim.
-4. :mod:`xmlrpclib` doesn't expand external entities and omits them.
+4. :mod:`xmlrpc.client` doesn't expand external entities and omits them.
 5. Since Python 3.7.1, external general entities are no longer processed by
    default.
 
@@ -119,8 +119,8 @@ all known attack vectors with examples and references.
 
 .. _defusedxml-package:
 
-The :mod:`defusedxml` Package
-------------------------------------------------------
+The :mod:`!defusedxml` Package
+------------------------------
 
 `defusedxml`_ is a pure Python package with modified subclasses of all stdlib
 XML parsers that prevent any potentially malicious operation. Use of this
diff --git a/Doc/library/xml.sax.handler.rst b/Doc/library/xml.sax.handler.rst
index 719ce5ab1bcf65..e2f28e3244cb09 100644
--- a/Doc/library/xml.sax.handler.rst
+++ b/Doc/library/xml.sax.handler.rst
@@ -393,7 +393,7 @@ implements this interface, then register the object with your
 :class:`~xml.sax.xmlreader.XMLReader`, the parser
 will call the methods in your object to report all warnings and errors. There
 are three levels of errors available: warnings, (possibly) recoverable errors,
-and unrecoverable errors.  All methods take a :exc:`SAXParseException` as the
+and unrecoverable errors.  All methods take a :exc:`~xml.sax.SAXParseException` as the
 only parameter.  Errors and warnings may be converted to an exception by raising
 the passed-in exception object.
 
diff --git a/Doc/library/xml.sax.utils.rst b/Doc/library/xml.sax.utils.rst
index ab4606bcf9fe6c..e57e76dcac7820 100644
--- a/Doc/library/xml.sax.utils.rst
+++ b/Doc/library/xml.sax.utils.rst
@@ -92,5 +92,5 @@ or as base classes.
    reading.  The input source can be given as a string, a file-like object, or
    an :class:`~xml.sax.xmlreader.InputSource` object; parsers will use this
    function to implement the polymorphic *source* argument to their
-   :meth:`parse` method.
+   :meth:`~xml.sax.xmlreader.XMLReader.parse` method.
 
diff --git a/Doc/library/xmlrpc.rst b/Doc/library/xmlrpc.rst
index ae68157b0f63c1..5f0a2cf68d01f9 100644
--- a/Doc/library/xmlrpc.rst
+++ b/Doc/library/xmlrpc.rst
@@ -1,5 +1,5 @@
-:mod:`xmlrpc` --- XMLRPC server and client modules
-==================================================
+:mod:`!xmlrpc` --- XMLRPC server and client modules
+===================================================
 
 XML-RPC is a Remote Procedure Call method that uses XML passed via HTTP as a
 transport.  With it, a client can call methods with parameters on a remote
diff --git a/Doc/library/zipapp.rst b/Doc/library/zipapp.rst
index 981020b13cd988..104afca23a20b4 100644
--- a/Doc/library/zipapp.rst
+++ b/Doc/library/zipapp.rst
@@ -54,7 +54,7 @@ The following options are understood:
 
 .. program:: zipapp
 
-.. cmdoption:: -o <output>, --output=<output>
+.. option:: -o <output>, --output=<output>
 
    Write the output to a file named *output*.  If this option is not specified,
    the output filename will be the same as the input *source*, with the
@@ -64,13 +64,13 @@ The following options are understood:
    An output filename must be specified if the *source* is an archive (and in
    that case, *output* must not be the same as *source*).
 
-.. cmdoption:: -p <interpreter>, --python=<interpreter>
+.. option:: -p <interpreter>, --python=<interpreter>
 
    Add a ``#!`` line to the archive specifying *interpreter* as the command
    to run.  Also, on POSIX, make the archive executable.  The default is to
    write no ``#!`` line, and not make the file executable.
 
-.. cmdoption:: -m <mainfn>, --main=<mainfn>
+.. option:: -m <mainfn>, --main=<mainfn>
 
    Write a ``__main__.py`` file to the archive that executes *mainfn*.  The
    *mainfn* argument should have the form "pkg.mod:fn", where "pkg.mod" is a
@@ -79,7 +79,7 @@ The following options are understood:
 
    :option:`--main` cannot be specified when copying an archive.
 
-.. cmdoption:: -c, --compress
+.. option:: -c, --compress
 
    Compress files with the deflate method, reducing the size of the output
    file. By default, files are stored uncompressed in the archive.
@@ -88,13 +88,13 @@ The following options are understood:
 
    .. versionadded:: 3.7
 
-.. cmdoption:: --info
+.. option:: --info
 
    Display the interpreter embedded in the archive, for diagnostic purposes.  In
    this case, any other options are ignored and SOURCE must be an archive, not a
    directory.
 
-.. cmdoption:: -h, --help
+.. option:: -h, --help
 
    Print a short usage message and exit.
 
@@ -281,12 +281,7 @@ The steps to create a standalone archive are as follows:
    file - if not, you can just list the dependencies manually on the pip command
    line).
 
-3. Optionally, delete the ``.dist-info`` directories created by pip in the
-   ``myapp`` directory. These hold metadata for pip to manage the packages, and
-   as you won't be making any further use of pip they aren't required -
-   although it won't do any harm if you leave them.
-
-4. Package the application using:
+3. Package the application using:
 
    .. code-block:: shell-session
 
@@ -303,115 +298,18 @@ the Python interpreter registers the ``.pyz`` and ``.pyzw`` file extensions
 when installed.
 
 
-Making a Windows executable
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-On Windows, registration of the ``.pyz`` extension is optional, and
-furthermore, there are certain places that don't recognise registered
-extensions "transparently" (the simplest example is that
-``subprocess.run(['myapp'])`` won't find your application - you need to
-explicitly specify the extension).
-
-On Windows, therefore, it is often preferable to create an executable from the
-zipapp.  This is relatively easy, although it does require a C compiler.  The
-basic approach relies on the fact that zipfiles can have arbitrary data
-prepended, and Windows exe files can have arbitrary data appended.  So by
-creating a suitable launcher and tacking the ``.pyz`` file onto the end of it,
-you end up with a single-file executable that runs your application.
-
-A suitable launcher can be as simple as the following::
-
-   #define Py_LIMITED_API 1
-   #include "Python.h"
-
-   #define WIN32_LEAN_AND_MEAN
-   #include <windows.h>
-
-   #ifdef WINDOWS
-   int WINAPI wWinMain(
-       HINSTANCE hInstance,      /* handle to current instance */
-       HINSTANCE hPrevInstance,  /* handle to previous instance */
-       LPWSTR lpCmdLine,         /* pointer to command line */
-       int nCmdShow              /* show state of window */
-   )
-   #else
-   int wmain()
-   #endif
-   {
-       wchar_t **myargv = _alloca((__argc + 1) * sizeof(wchar_t*));
-       myargv[0] = __wargv[0];
-       memcpy(myargv + 1, __wargv, __argc * sizeof(wchar_t *));
-       return Py_Main(__argc+1, myargv);
-   }
-
-If you define the ``WINDOWS`` preprocessor symbol, this will generate a
-GUI executable, and without it, a console executable.
-
-To compile the executable, you can either just use the standard MSVC
-command line tools, or you can take advantage of the fact that distutils
-knows how to compile Python source::
-
-   >>> from distutils.ccompiler import new_compiler
-   >>> import distutils.sysconfig
-   >>> import sys
-   >>> import os
-   >>> from pathlib import Path
-
-   >>> def compile(src):
-   >>>     src = Path(src)
-   >>>     cc = new_compiler()
-   >>>     exe = src.stem
-   >>>     cc.add_include_dir(distutils.sysconfig.get_python_inc())
-   >>>     cc.add_library_dir(os.path.join(sys.base_exec_prefix, 'libs'))
-   >>>     # First the CLI executable
-   >>>     objs = cc.compile([str(src)])
-   >>>     cc.link_executable(objs, exe)
-   >>>     # Now the GUI executable
-   >>>     cc.define_macro('WINDOWS')
-   >>>     objs = cc.compile([str(src)])
-   >>>     cc.link_executable(objs, exe + 'w')
-
-   >>> if __name__ == "__main__":
-   >>>     compile("zastub.c")
-
-The resulting launcher uses the "Limited ABI", so it will run unchanged with
-any version of Python 3.x.  All it needs is for Python (``python3.dll``) to be
-on the user's ``PATH``.
-
-For a fully standalone distribution, you can distribute the launcher with your
-application appended, bundled with the Python "embedded" distribution.  This
-will run on any PC with the appropriate architecture (32 bit or 64 bit).
-
-
 Caveats
 ~~~~~~~
 
-There are some limitations to the process of bundling your application into
-a single file.  In most, if not all, cases they can be addressed without
-needing major changes to your application.
-
-1. If your application depends on a package that includes a C extension, that
-   package cannot be run from a zip file (this is an OS limitation, as executable
-   code must be present in the filesystem for the OS loader to load it). In this
-   case, you can exclude that dependency from the zipfile, and either require
-   your users to have it installed, or ship it alongside your zipfile and add code
-   to your ``__main__.py`` to include the directory containing the unzipped
-   module in ``sys.path``. In this case, you will need to make sure to ship
-   appropriate binaries for your target architecture(s) (and potentially pick the
-   correct version to add to ``sys.path`` at runtime, based on the user's machine).
-
-2. If you are shipping a Windows executable as described above, you either need to
-   ensure that your users have ``python3.dll`` on their PATH (which is not the
-   default behaviour of the installer) or you should bundle your application with
-   the embedded distribution.
-
-3. The suggested launcher above uses the Python embedding API.  This means that in
-   your application, ``sys.executable`` will be your application, and *not* a
-   conventional Python interpreter.  Your code and its dependencies need to be
-   prepared for this possibility.  For example, if your application uses the
-   :mod:`multiprocessing` module, it will need to call
-   :func:`multiprocessing.set_executable` to let the module know where to find the
-   standard Python interpreter.
+If your application depends on a package that includes a C extension, that
+package cannot be run from a zip file (this is an OS limitation, as executable
+code must be present in the filesystem for the OS loader to load it). In this
+case, you can exclude that dependency from the zipfile, and either require
+your users to have it installed, or ship it alongside your zipfile and add code
+to your ``__main__.py`` to include the directory containing the unzipped
+module in ``sys.path``. In this case, you will need to make sure to ship
+appropriate binaries for your target architecture(s) (and potentially pick the
+correct version to add to ``sys.path`` at runtime, based on the user's machine).
 
 
 The Python Zip Application Archive Format
diff --git a/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
index 45f3d340bd82d3..a77e49a7643826 100644
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -577,7 +577,8 @@ Path objects are traversable using the ``/`` operator or ``joinpath``.
 
 .. data:: Path.suffix
 
-   The file extension of the final component.
+   The last dot-separated portion of the final component, if any.
+   This is commonly called the file extension.
 
    .. versionadded:: 3.11
       Added :data:`Path.suffix` property.
@@ -591,7 +592,7 @@ Path objects are traversable using the ``/`` operator or ``joinpath``.
 
 .. data:: Path.suffixes
 
-   A list of the path’s file extensions.
+   A list of the path’s suffixes, commonly called file extensions.
 
    .. versionadded:: 3.11
       Added :data:`Path.suffixes` property.
@@ -905,27 +906,27 @@ For a list of the files in a ZIP archive, use the :option:`-l` option:
 Command-line options
 ~~~~~~~~~~~~~~~~~~~~
 
-.. cmdoption:: -l <zipfile>
-               --list <zipfile>
+.. option:: -l <zipfile>
+            --list <zipfile>
 
    List files in a zipfile.
 
-.. cmdoption:: -c <zipfile> <source1> ... <sourceN>
-               --create <zipfile> <source1> ... <sourceN>
+.. option:: -c <zipfile> <source1> ... <sourceN>
+            --create <zipfile> <source1> ... <sourceN>
 
    Create zipfile from source files.
 
-.. cmdoption:: -e <zipfile> <output_dir>
-               --extract <zipfile> <output_dir>
+.. option:: -e <zipfile> <output_dir>
+            --extract <zipfile> <output_dir>
 
    Extract zipfile into target directory.
 
-.. cmdoption:: -t <zipfile>
-               --test <zipfile>
+.. option:: -t <zipfile>
+            --test <zipfile>
 
    Test whether the zipfile is valid or not.
 
-.. cmdoption:: --metadata-encoding <encoding>
+.. option:: --metadata-encoding <encoding>
 
    Specify encoding of member names for :option:`-l`, :option:`-e` and
    :option:`-t`.
diff --git a/Doc/library/zipimport.rst b/Doc/library/zipimport.rst
index 11d19e8c863e9f..47c81f0e63603d 100644
--- a/Doc/library/zipimport.rst
+++ b/Doc/library/zipimport.rst
@@ -113,7 +113,7 @@ zipimporter Objects
       file wasn't found.
 
       .. versionchanged:: 3.3
-         :exc:`IOError` used to be raised instead of :exc:`OSError`.
+         :exc:`IOError` used to be raised, it is now an alias of :exc:`OSError`.
 
 
    .. method:: get_filename(fullname)
diff --git a/Doc/license.rst b/Doc/license.rst
index 005d048b6eb209..8aad93062a5a88 100644
--- a/Doc/license.rst
+++ b/Doc/license.rst
@@ -352,8 +352,8 @@ the verbatim comments from the original code::
 Sockets
 -------
 
-The :mod:`socket` module uses the functions, :func:`getaddrinfo`, and
-:func:`getnameinfo`, which are coded in separate source files from the WIDE
+The :mod:`socket` module uses the functions, :c:func:`!getaddrinfo`, and
+:c:func:`!getnameinfo`, which are coded in separate source files from the WIDE
 Project, https://www.wide.ad.jp/. ::
 
    Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -387,7 +387,7 @@ Project, https://www.wide.ad.jp/. ::
 Asynchronous socket services
 ----------------------------
 
-The :mod:`test.support.asynchat` and :mod:`test.support.asyncore`
+The :mod:`!test.support.asynchat` and :mod:`!test.support.asyncore`
 modules contain the following notice::
 
    Copyright 1996 by Sam Rushing
@@ -476,7 +476,7 @@ The :mod:`trace` module contains the following notice::
 UUencode and UUdecode functions
 -------------------------------
 
-The :mod:`uu` module contains the following notice::
+The ``uu`` codec contains the following notice::
 
    Copyright 1994 by Lance Ellinghouse
    Cathedral City, California Republic, United States of America.
@@ -539,7 +539,7 @@ The :mod:`xmlrpc.client` module contains the following notice::
 test_epoll
 ----------
 
-The :mod:`test_epoll` module contains the following notice::
+The :mod:`!test.test_epoll` module contains the following notice::
 
   Copyright (c) 2001-2006 Twisted Matrix Laboratories.
 
@@ -655,144 +655,196 @@ copyright and licensing notice::
 OpenSSL
 -------
 
-The modules :mod:`hashlib`, :mod:`posix`, :mod:`ssl`, :mod:`crypt` use
+The modules :mod:`hashlib`, :mod:`posix` and :mod:`ssl` use
 the OpenSSL library for added performance if made available by the
 operating system. Additionally, the Windows and macOS installers for
 Python may include a copy of the OpenSSL libraries, so we include a copy
-of the OpenSSL license here::
-
-
-  LICENSE ISSUES
-  ==============
-
-  The OpenSSL toolkit stays under a dual license, i.e. both the conditions of
-  the OpenSSL License and the original SSLeay license apply to the toolkit.
-  See below for the actual license texts. Actually both licenses are BSD-style
-  Open Source licenses. In case of any license issues related to OpenSSL
-  please contact openssl-core@openssl.org.
-
-  OpenSSL License
-  ---------------
-
-    /* ====================================================================
-     * Copyright (c) 1998-2008 The OpenSSL Project.  All rights reserved.
-     *
-     * Redistribution and use in source and binary forms, with or without
-     * modification, are permitted provided that the following conditions
-     * are met:
-     *
-     * 1. Redistributions of source code must retain the above copyright
-     *    notice, this list of conditions and the following disclaimer.
-     *
-     * 2. Redistributions in binary form must reproduce the above copyright
-     *    notice, this list of conditions and the following disclaimer in
-     *    the documentation and/or other materials provided with the
-     *    distribution.
-     *
-     * 3. All advertising materials mentioning features or use of this
-     *    software must display the following acknowledgment:
-     *    "This product includes software developed by the OpenSSL Project
-     *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
-     *
-     * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
-     *    endorse or promote products derived from this software without
-     *    prior written permission. For written permission, please contact
-     *    openssl-core@openssl.org.
-     *
-     * 5. Products derived from this software may not be called "OpenSSL"
-     *    nor may "OpenSSL" appear in their names without prior written
-     *    permission of the OpenSSL Project.
-     *
-     * 6. Redistributions of any form whatsoever must retain the following
-     *    acknowledgment:
-     *    "This product includes software developed by the OpenSSL Project
-     *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
-     *
-     * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
-     * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
-     * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-     * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
-     * OF THE POSSIBILITY OF SUCH DAMAGE.
-     * ====================================================================
-     *
-     * This product includes cryptographic software written by Eric Young
-     * (eay@cryptsoft.com).  This product includes software written by Tim
-     * Hudson (tjh@cryptsoft.com).
-     *
-     */
-
- Original SSLeay License
- -----------------------
-
-    /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
-     * All rights reserved.
-     *
-     * This package is an SSL implementation written
-     * by Eric Young (eay@cryptsoft.com).
-     * The implementation was written so as to conform with Netscapes SSL.
-     *
-     * This library is free for commercial and non-commercial use as long as
-     * the following conditions are aheared to.  The following conditions
-     * apply to all code found in this distribution, be it the RC4, RSA,
-     * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
-     * included with this distribution is covered by the same copyright terms
-     * except that the holder is Tim Hudson (tjh@cryptsoft.com).
-     *
-     * Copyright remains Eric Young's, and as such any Copyright notices in
-     * the code are not to be removed.
-     * If this package is used in a product, Eric Young should be given attribution
-     * as the author of the parts of the library used.
-     * This can be in the form of a textual message at program startup or
-     * in documentation (online or textual) provided with the package.
-     *
-     * Redistribution and use in source and binary forms, with or without
-     * modification, are permitted provided that the following conditions
-     * are met:
-     * 1. Redistributions of source code must retain the copyright
-     *    notice, this list of conditions and the following disclaimer.
-     * 2. Redistributions in binary form must reproduce the above copyright
-     *    notice, this list of conditions and the following disclaimer in the
-     *    documentation and/or other materials provided with the distribution.
-     * 3. All advertising materials mentioning features or use of this software
-     *    must display the following acknowledgement:
-     *    "This product includes cryptographic software written by
-     *     Eric Young (eay@cryptsoft.com)"
-     *    The word 'cryptographic' can be left out if the rouines from the library
-     *    being used are not cryptographic related :-).
-     * 4. If you include any Windows specific code (or a derivative thereof) from
-     *    the apps directory (application code) you must include an acknowledgement:
-     *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
-     *
-     * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
-     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-     * SUCH DAMAGE.
-     *
-     * The licence and distribution terms for any publically available version or
-     * derivative of this code cannot be changed.  i.e. this code cannot simply be
-     * copied and put under another distribution licence
-     * [including the GNU Public Licence.]
-     */
+of the OpenSSL license here. For the OpenSSL 3.0 release,
+and later releases derived from that, the Apache License v2 applies::
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+      and distribution as defined by Sections 1 through 9 of this document.
+
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+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
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+      "Derivative Works" shall mean any work, whether in Source or Object
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+          notices within Derivative Works that You distribute, alongside
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+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
 
 
 expat
 -----
 
-The :mod:`pyexpat` extension is built using an included copy of the expat
+The :mod:`pyexpat <xml.parsers.expat>` extension is built using an included copy of the expat
 sources unless the build is configured ``--with-system-expat``::
 
   Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
@@ -990,29 +1042,27 @@ https://www.w3.org/TR/xml-c14n2-testcases/ and is distributed under the
    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
-Audioop
--------
+mimalloc
+--------
+
+MIT License
+
+Copyright (c) 2018-2021 Microsoft Corporation, Daan Leijen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-The audioop module uses the code base in g771.c file of the SoX project::
-
-    Programming the AdLib/Sound Blaster
-    FM Music Chips
-    Version 2.0 (24 Feb 1992)
-    Copyright (c) 1991, 1992 by Jeffrey S. Lee
-    jlee@smylex.uucp
-    Warranty and Copyright Policy
-    This document is provided on an "as-is" basis, and its author makes
-    no warranty or representation, express or implied, with respect to
-    its quality performance or fitness for a particular purpose.  In no
-    event will the author of this document be liable for direct, indirect,
-    special, incidental, or consequential damages arising out of the use
-    or inability to use the information contained within.  Use of this
-    document is at your own risk.
-    This file may be used and copied freely so long as the applicable
-    copyright notices are retained, and no modifications are made to the
-    text of the document.  No money shall be charged for its distribution
-    beyond reasonable shipping, handling and duplication costs, nor shall
-    proprietary changes be made to this document so that it cannot be
-    distributed freely.  This document may not be included in published
-    material or commercial packages without the written consent of its
-    author.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst
index 9d1e5b6c596d9f..8f6481339837a0 100644
--- a/Doc/reference/compound_stmts.rst
+++ b/Doc/reference/compound_stmts.rst
@@ -489,37 +489,37 @@ The execution of the :keyword:`with` statement with one "item" proceeds as follo
 #. The context expression (the expression given in the
    :token:`~python-grammar:with_item`) is evaluated to obtain a context manager.
 
-#. The context manager's :meth:`__enter__` is loaded for later use.
+#. The context manager's :meth:`~object.__enter__` is loaded for later use.
 
-#. The context manager's :meth:`__exit__` is loaded for later use.
+#. The context manager's :meth:`~object.__exit__` is loaded for later use.
 
-#. The context manager's :meth:`__enter__` method is invoked.
+#. The context manager's :meth:`~object.__enter__` method is invoked.
 
 #. If a target was included in the :keyword:`with` statement, the return value
-   from :meth:`__enter__` is assigned to it.
+   from :meth:`~object.__enter__` is assigned to it.
 
    .. note::
 
-      The :keyword:`with` statement guarantees that if the :meth:`__enter__`
-      method returns without an error, then :meth:`__exit__` will always be
+      The :keyword:`with` statement guarantees that if the :meth:`~object.__enter__`
+      method returns without an error, then :meth:`~object.__exit__` will always be
       called. Thus, if an error occurs during the assignment to the target list,
       it will be treated the same as an error occurring within the suite would
       be. See step 7 below.
 
 #. The suite is executed.
 
-#. The context manager's :meth:`__exit__` method is invoked.  If an exception
+#. The context manager's :meth:`~object.__exit__` method is invoked.  If an exception
    caused the suite to be exited, its type, value, and traceback are passed as
-   arguments to :meth:`__exit__`. Otherwise, three :const:`None` arguments are
+   arguments to :meth:`~object.__exit__`. Otherwise, three :const:`None` arguments are
    supplied.
 
    If the suite was exited due to an exception, and the return value from the
-   :meth:`__exit__` method was false, the exception is reraised.  If the return
+   :meth:`~object.__exit__` method was false, the exception is reraised.  If the return
    value was true, the exception is suppressed, and execution continues with the
    statement following the :keyword:`with` statement.
 
    If the suite was exited for any reason other than an exception, the return
-   value from :meth:`__exit__` is ignored, and execution proceeds at the normal
+   value from :meth:`~object.__exit__` is ignored, and execution proceeds at the normal
    location for the kind of exit that was taken.
 
 The following code::
@@ -642,14 +642,14 @@ Here's an overview of the logical flow of a match statement:
    specified below.  **Name bindings made during a successful pattern match
    outlive the executed block and can be used after the match statement**.
 
-      .. note::
+   .. note::
 
-         During failed pattern matches, some subpatterns may succeed.  Do not
-         rely on bindings being made for a failed match.  Conversely, do not
-         rely on variables remaining unchanged after a failed match.  The exact
-         behavior is dependent on implementation and may vary.  This is an
-         intentional decision made to allow different implementations to add
-         optimizations.
+      During failed pattern matches, some subpatterns may succeed.  Do not
+      rely on bindings being made for a failed match.  Conversely, do not
+      rely on variables remaining unchanged after a failed match.  The exact
+      behavior is dependent on implementation and may vary.  This is an
+      intentional decision made to allow different implementations to add
+      optimizations.
 
 #. If the pattern succeeds, the corresponding guard (if present) is evaluated. In
    this case all name bindings are guaranteed to have happened.
@@ -1058,7 +1058,7 @@ subject value:
 .. note:: Key-value pairs are matched using the two-argument form of the mapping
    subject's ``get()`` method.  Matched key-value pairs must already be present
    in the mapping, and not created on-the-fly via :meth:`__missing__` or
-   :meth:`__getitem__`.
+   :meth:`~object.__getitem__`.
 
 In simple terms ``{KEY1: P1, KEY2: P2, ... }`` matches only if all the following
 happens:
@@ -1170,8 +1170,10 @@ In simple terms ``CLS(P1, attr=P2)`` matches only if the following happens:
 * ``isinstance(<subject>, CLS)``
 * convert ``P1`` to a keyword pattern using ``CLS.__match_args__``
 * For each keyword argument ``attr=P2``:
-   * ``hasattr(<subject>, "attr")``
-   * ``P2`` matches ``<subject>.attr``
+
+  * ``hasattr(<subject>, "attr")``
+  * ``P2`` matches ``<subject>.attr``
+
 * ... and so on for the corresponding keyword argument/pattern pair.
 
 .. seealso::
@@ -1206,7 +1208,7 @@ A function definition defines a user-defined function object (see section
 :ref:`types`):
 
 .. productionlist:: python-grammar
-   funcdef: [`decorators`] "def" `funcname` "(" [`parameter_list`] ")"
+   funcdef: [`decorators`] "def" `funcname` [`type_params`] "(" [`parameter_list`] ")"
           : ["->" `expression`] ":" `suite`
    decorators: `decorator`+
    decorator: "@" `assignment_expression` NEWLINE
@@ -1256,6 +1258,15 @@ except that the original function is not temporarily bound to the name ``func``.
    :token:`~python-grammar:assignment_expression`. Previously, the grammar was
    much more restrictive; see :pep:`614` for details.
 
+A list of :ref:`type parameters <type-params>` may be given in square brackets
+between the function's name and the opening parenthesis for its parameter list.
+This indicates to static type checkers that the function is generic. At runtime,
+the type parameters can be retrieved from the function's ``__type_params__``
+attribute. See :ref:`generic-functions` for more.
+
+.. versionchanged:: 3.12
+   Type parameter lists are new in Python 3.12.
+
 .. index::
    triple: default; parameter; value
    single: argument; function definition
@@ -1378,7 +1389,7 @@ Class definitions
 A class definition defines a class object (see section :ref:`types`):
 
 .. productionlist:: python-grammar
-   classdef: [`decorators`] "class" `classname` [`inheritance`] ":" `suite`
+   classdef: [`decorators`] "class" `classname` [`type_params`] [`inheritance`] ":" `suite`
    inheritance: "(" [`argument_list`] ")"
    classname: `identifier`
 
@@ -1434,6 +1445,15 @@ decorators.  The result is then bound to the class name.
    :token:`~python-grammar:assignment_expression`. Previously, the grammar was
    much more restrictive; see :pep:`614` for details.
 
+A list of :ref:`type parameters <type-params>` may be given in square brackets
+immediately after the class's name.
+This indicates to static type checkers that the class is generic. At runtime,
+the type parameters can be retrieved from the class's ``__type_params__``
+attribute. See :ref:`generic-classes` for more.
+
+.. versionchanged:: 3.12
+   Type parameter lists are new in Python 3.12.
+
 **Programmer's note:** Variables defined in the class definition are class
 attributes; they are shared by instances.  Instance attributes can be set in a
 method with ``self.name = value``.  Both class and instance attributes are
@@ -1589,6 +1609,228 @@ body of a coroutine function.
       The proposal that made coroutines a proper standalone concept in Python,
       and added supporting syntax.
 
+.. _type-params:
+
+Type parameter lists
+====================
+
+.. versionadded:: 3.12
+
+.. index::
+   single: type parameters
+
+.. productionlist:: python-grammar
+   type_params: "[" `type_param` ("," `type_param`)* "]"
+   type_param: `typevar` | `typevartuple` | `paramspec`
+   typevar: `identifier` (":" `expression`)?
+   typevartuple: "*" `identifier`
+   paramspec: "**" `identifier`
+
+:ref:`Functions <def>` (including :ref:`coroutines <async def>`),
+:ref:`classes <class>` and :ref:`type aliases <type>` may
+contain a type parameter list::
+
+   def max[T](args: list[T]) -> T:
+       ...
+
+   async def amax[T](args: list[T]) -> T:
+       ...
+
+   class Bag[T]:
+       def __iter__(self) -> Iterator[T]:
+           ...
+
+       def add(self, arg: T) -> None:
+           ...
+
+   type ListOrSet[T] = list[T] | set[T]
+
+Semantically, this indicates that the function, class, or type alias is
+generic over a type variable. This information is primarily used by static
+type checkers, and at runtime, generic objects behave much like their
+non-generic counterparts.
+
+Type parameters are declared in square brackets (``[]``) immediately
+after the name of the function, class, or type alias. The type parameters
+are accessible within the scope of the generic object, but not elsewhere.
+Thus, after a declaration ``def func[T](): pass``, the name ``T`` is not available in
+the module scope. Below, the semantics of generic objects are described
+with more precision. The scope of type parameters is modeled with a special
+function (technically, an :ref:`annotation scope <annotation-scopes>`) that
+wraps the creation of the generic object.
+
+Generic functions, classes, and type aliases have a :attr:`!__type_params__`
+attribute listing their type parameters.
+
+Type parameters come in three kinds:
+
+* :data:`typing.TypeVar`, introduced by a plain name (e.g., ``T``). Semantically, this
+  represents a single type to a type checker.
+* :data:`typing.TypeVarTuple`, introduced by a name prefixed with a single
+  asterisk (e.g., ``*Ts``). Semantically, this stands for a tuple of any
+  number of types.
+* :data:`typing.ParamSpec`, introduced by a name prefixed with two asterisks
+  (e.g., ``**P``). Semantically, this stands for the parameters of a callable.
+
+:data:`typing.TypeVar` declarations can define *bounds* and *constraints* with
+a colon (``:``) followed by an expression. A single expression after the colon
+indicates a bound (e.g. ``T: int``). Semantically, this means
+that the :data:`!typing.TypeVar` can only represent types that are a subtype of
+this bound. A parenthesized tuple of expressions after the colon indicates a
+set of constraints (e.g. ``T: (str, bytes)``). Each member of the tuple should be a
+type (again, this is not enforced at runtime). Constrained type variables can only
+take on one of the types in the list of constraints.
+
+For :data:`!typing.TypeVar`\ s declared using the type parameter list syntax,
+the bound and constraints are not evaluated when the generic object is created,
+but only when the value is explicitly accessed through the attributes ``__bound__``
+and ``__constraints__``. To accomplish this, the bounds or constraints are
+evaluated in a separate :ref:`annotation scope <annotation-scopes>`.
+
+:data:`typing.TypeVarTuple`\ s and :data:`typing.ParamSpec`\ s cannot have bounds
+or constraints.
+
+The following example indicates the full set of allowed type parameter declarations::
+
+   def overly_generic[
+      SimpleTypeVar,
+      TypeVarWithBound: int,
+      TypeVarWithConstraints: (str, bytes),
+      *SimpleTypeVarTuple,
+      **SimpleParamSpec,
+   ](
+      a: SimpleTypeVar,
+      b: TypeVarWithBound,
+      c: Callable[SimpleParamSpec, TypeVarWithConstraints],
+      *d: SimpleTypeVarTuple,
+   ): ...
+
+.. _generic-functions:
+
+Generic functions
+-----------------
+
+Generic functions are declared as follows::
+
+   def func[T](arg: T): ...
+
+This syntax is equivalent to::
+
+   annotation-def TYPE_PARAMS_OF_func():
+       T = typing.TypeVar("T")
+       def func(arg: T): ...
+       func.__type_params__ = (T,)
+       return func
+   func = TYPE_PARAMS_OF_func()
+
+Here ``annotation-def`` indicates an :ref:`annotation scope <annotation-scopes>`,
+which is not actually bound to any name at runtime. (One
+other liberty is taken in the translation: the syntax does not go through
+attribute access on the :mod:`typing` module, but creates an instance of
+:data:`typing.TypeVar` directly.)
+
+The annotations of generic functions are evaluated within the annotation scope
+used for declaring the type parameters, but the function's defaults and
+decorators are not.
+
+The following example illustrates the scoping rules for these cases,
+as well as for additional flavors of type parameters::
+
+   @decorator
+   def func[T: int, *Ts, **P](*args: *Ts, arg: Callable[P, T] = some_default):
+       ...
+
+Except for the :ref:`lazy evaluation <lazy-evaluation>` of the
+:class:`~typing.TypeVar` bound, this is equivalent to::
+
+   DEFAULT_OF_arg = some_default
+
+   annotation-def TYPE_PARAMS_OF_func():
+
+       annotation-def BOUND_OF_T():
+           return int
+       # In reality, BOUND_OF_T() is evaluated only on demand.
+       T = typing.TypeVar("T", bound=BOUND_OF_T())
+
+       Ts = typing.TypeVarTuple("Ts")
+       P = typing.ParamSpec("P")
+
+       def func(*args: *Ts, arg: Callable[P, T] = DEFAULT_OF_arg):
+           ...
+
+       func.__type_params__ = (T, Ts, P)
+       return func
+   func = decorator(TYPE_PARAMS_OF_func())
+
+The capitalized names like ``DEFAULT_OF_arg`` are not actually
+bound at runtime.
+
+.. _generic-classes:
+
+Generic classes
+---------------
+
+Generic classes are declared as follows::
+
+   class Bag[T]: ...
+
+This syntax is equivalent to::
+
+   annotation-def TYPE_PARAMS_OF_Bag():
+       T = typing.TypeVar("T")
+       class Bag(typing.Generic[T]):
+           __type_params__ = (T,)
+           ...
+       return Bag
+   Bag = TYPE_PARAMS_OF_Bag()
+
+Here again ``annotation-def`` (not a real keyword) indicates an
+:ref:`annotation scope <annotation-scopes>`, and the name
+``TYPE_PARAMS_OF_Bag`` is not actually bound at runtime.
+
+Generic classes implicitly inherit from :data:`typing.Generic`.
+The base classes and keyword arguments of generic classes are
+evaluated within the type scope for the type parameters,
+and decorators are evaluated outside that scope. This is illustrated
+by this example::
+
+   @decorator
+   class Bag(Base[T], arg=T): ...
+
+This is equivalent to::
+
+   annotation-def TYPE_PARAMS_OF_Bag():
+       T = typing.TypeVar("T")
+       class Bag(Base[T], typing.Generic[T], arg=T):
+           __type_params__ = (T,)
+           ...
+       return Bag
+   Bag = decorator(TYPE_PARAMS_OF_Bag())
+
+.. _generic-type-aliases:
+
+Generic type aliases
+--------------------
+
+The :keyword:`type` statement can also be used to create a generic type alias::
+
+   type ListOrSet[T] = list[T] | set[T]
+
+Except for the :ref:`lazy evaluation <lazy-evaluation>` of the value,
+this is equivalent to::
+
+   annotation-def TYPE_PARAMS_OF_ListOrSet():
+       T = typing.TypeVar("T")
+
+       annotation-def VALUE_OF_ListOrSet():
+           return list[T] | set[T]
+       # In reality, the value is lazily evaluated
+       return typing.TypeAliasType("ListOrSet", VALUE_OF_ListOrSet(), type_params=(T,))
+   ListOrSet = TYPE_PARAMS_OF_ListOrSet()
+
+Here, ``annotation-def`` (not a real keyword) indicates an
+:ref:`annotation scope <annotation-scopes>`. The capitalized names
+like ``TYPE_PARAMS_OF_ListOrSet`` are not actually bound at runtime.
 
 .. rubric:: Footnotes
 
@@ -1598,29 +1840,29 @@ body of a coroutine function.
 
 .. [#] In pattern matching, a sequence is defined as one of the following:
 
-      * a class that inherits from :class:`collections.abc.Sequence`
-      * a Python class that has been registered as :class:`collections.abc.Sequence`
-      * a builtin class that has its (CPython) :data:`Py_TPFLAGS_SEQUENCE` bit set
-      * a class that inherits from any of the above
+   * a class that inherits from :class:`collections.abc.Sequence`
+   * a Python class that has been registered as :class:`collections.abc.Sequence`
+   * a builtin class that has its (CPython) :c:macro:`Py_TPFLAGS_SEQUENCE` bit set
+   * a class that inherits from any of the above
 
    The following standard library classes are sequences:
 
-      * :class:`array.array`
-      * :class:`collections.deque`
-      * :class:`list`
-      * :class:`memoryview`
-      * :class:`range`
-      * :class:`tuple`
+   * :class:`array.array`
+   * :class:`collections.deque`
+   * :class:`list`
+   * :class:`memoryview`
+   * :class:`range`
+   * :class:`tuple`
 
    .. note:: Subject values of type ``str``, ``bytes``, and ``bytearray``
       do not match sequence patterns.
 
 .. [#] In pattern matching, a mapping is defined as one of the following:
 
-      * a class that inherits from :class:`collections.abc.Mapping`
-      * a Python class that has been registered as :class:`collections.abc.Mapping`
-      * a builtin class that has its (CPython) :data:`Py_TPFLAGS_MAPPING` bit set
-      * a class that inherits from any of the above
+   * a class that inherits from :class:`collections.abc.Mapping`
+   * a Python class that has been registered as :class:`collections.abc.Mapping`
+   * a builtin class that has its (CPython) :c:macro:`Py_TPFLAGS_MAPPING` bit set
+   * a class that inherits from any of the above
 
    The standard library classes :class:`dict` and :class:`types.MappingProxyType`
    are mappings.
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index c0734e49f29192..27d379a8b70f31 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -88,7 +88,7 @@ Some objects contain references to "external" resources such as open files or
 windows.  It is understood that these resources are freed when the object is
 garbage-collected, but since garbage collection is not guaranteed to happen,
 such objects also provide an explicit way to release the external resource,
-usually a :meth:`close` method. Programs are strongly recommended to explicitly
+usually a :meth:`!close` method. Programs are strongly recommended to explicitly
 close such objects.  The ':keyword:`try`...\ :keyword:`finally`' statement
 and the ':keyword:`with`' statement provide convenient ways to do this.
 
@@ -141,1083 +141,1323 @@ Some of the type descriptions below contain a paragraph listing 'special
 attributes.'  These are attributes that provide access to the implementation and
 are not intended for general use.  Their definition may change in the future.
 
+
 None
-   .. index:: pair: object; None
+----
+
+.. index:: pair: object; None
+
+This type has a single value.  There is a single object with this value. This
+object is accessed through the built-in name ``None``. It is used to signify the
+absence of a value in many situations, e.g., it is returned from functions that
+don't explicitly return anything. Its truth value is false.
 
-   This type has a single value.  There is a single object with this value. This
-   object is accessed through the built-in name ``None``. It is used to signify the
-   absence of a value in many situations, e.g., it is returned from functions that
-   don't explicitly return anything. Its truth value is false.
 
 NotImplemented
-   .. index:: pair: object; NotImplemented
+--------------
 
-   This type has a single value.  There is a single object with this value. This
-   object is accessed through the built-in name ``NotImplemented``. Numeric methods
-   and rich comparison methods should return this value if they do not implement the
-   operation for the operands provided.  (The interpreter will then try the
-   reflected operation, or some other fallback, depending on the operator.)  It
-   should not be evaluated in a boolean context.
+.. index:: pair: object; NotImplemented
 
-   See
-   :ref:`implementing-the-arithmetic-operations`
-   for more details.
+This type has a single value.  There is a single object with this value. This
+object is accessed through the built-in name ``NotImplemented``. Numeric methods
+and rich comparison methods should return this value if they do not implement the
+operation for the operands provided.  (The interpreter will then try the
+reflected operation, or some other fallback, depending on the operator.)  It
+should not be evaluated in a boolean context.
 
-   .. versionchanged:: 3.9
-      Evaluating ``NotImplemented`` in a boolean context is deprecated. While
-      it currently evaluates as true, it will emit a :exc:`DeprecationWarning`.
-      It will raise a :exc:`TypeError` in a future version of Python.
+See
+:ref:`implementing-the-arithmetic-operations`
+for more details.
+
+.. versionchanged:: 3.9
+   Evaluating ``NotImplemented`` in a boolean context is deprecated. While
+   it currently evaluates as true, it will emit a :exc:`DeprecationWarning`.
+   It will raise a :exc:`TypeError` in a future version of Python.
 
 
 Ellipsis
-   .. index::
-      pair: object; Ellipsis
-      single: ...; ellipsis literal
+--------
+.. index::
+   pair: object; Ellipsis
+   single: ...; ellipsis literal
+
+This type has a single value.  There is a single object with this value. This
+object is accessed through the literal ``...`` or the built-in name
+``Ellipsis``.  Its truth value is true.
 
-   This type has a single value.  There is a single object with this value. This
-   object is accessed through the literal ``...`` or the built-in name
-   ``Ellipsis``.  Its truth value is true.
 
 :class:`numbers.Number`
-   .. index:: pair: object; numeric
+-----------------------
+
+.. index:: pair: object; numeric
 
-   These are created by numeric literals and returned as results by arithmetic
-   operators and arithmetic built-in functions.  Numeric objects are immutable;
-   once created their value never changes.  Python numbers are of course strongly
-   related to mathematical numbers, but subject to the limitations of numerical
-   representation in computers.
+These are created by numeric literals and returned as results by arithmetic
+operators and arithmetic built-in functions.  Numeric objects are immutable;
+once created their value never changes.  Python numbers are of course strongly
+related to mathematical numbers, but subject to the limitations of numerical
+representation in computers.
 
-   The string representations of the numeric classes, computed by
-   :meth:`~object.__repr__` and :meth:`~object.__str__`, have the following
-   properties:
+The string representations of the numeric classes, computed by
+:meth:`~object.__repr__` and :meth:`~object.__str__`, have the following
+properties:
 
-   * They are valid numeric literals which, when passed to their
-     class constructor, produce an object having the value of the
-     original numeric.
+* They are valid numeric literals which, when passed to their
+  class constructor, produce an object having the value of the
+  original numeric.
+
+* The representation is in base 10, when possible.
+
+* Leading zeros, possibly excepting a single zero before a
+  decimal point, are not shown.
+
+* Trailing zeros, possibly excepting a single zero after a
+  decimal point, are not shown.
+
+* A sign is shown only when the number is negative.
+
+Python distinguishes between integers, floating point numbers, and complex
+numbers:
+
+
+:class:`numbers.Integral`
+^^^^^^^^^^^^^^^^^^^^^^^^^
 
-   * The representation is in base 10, when possible.
+.. index:: pair: object; integer
 
-   * Leading zeros, possibly excepting a single zero before a
-     decimal point, are not shown.
+These represent elements from the mathematical set of integers (positive and
+negative).
 
-   * Trailing zeros, possibly excepting a single zero after a
-     decimal point, are not shown.
+.. note::
+   .. index:: pair: integer; representation
 
-   * A sign is shown only when the number is negative.
+   The rules for integer representation are intended to give the most meaningful
+   interpretation of shift and mask operations involving negative integers.
 
-   Python distinguishes between integers, floating point numbers, and complex
-   numbers:
+There are two types of integers:
 
-   :class:`numbers.Integral`
-      .. index:: pair: object; integer
+Integers (:class:`int`)
+   These represent numbers in an unlimited range, subject to available (virtual)
+   memory only.  For the purpose of shift and mask operations, a binary
+   representation is assumed, and negative numbers are represented in a variant of
+   2's complement which gives the illusion of an infinite string of sign bits
+   extending to the left.
 
-      These represent elements from the mathematical set of integers (positive and
-      negative).
+Booleans (:class:`bool`)
+   .. index::
+      pair: object; Boolean
+      single: False
+      single: True
 
-      There are two types of integers:
+   These represent the truth values False and True.  The two objects representing
+   the values ``False`` and ``True`` are the only Boolean objects. The Boolean type is a
+   subtype of the integer type, and Boolean values behave like the values 0 and 1,
+   respectively, in almost all contexts, the exception being that when converted to
+   a string, the strings ``"False"`` or ``"True"`` are returned, respectively.
 
-      Integers (:class:`int`)
-         These represent numbers in an unlimited range, subject to available (virtual)
-         memory only.  For the purpose of shift and mask operations, a binary
-         representation is assumed, and negative numbers are represented in a variant of
-         2's complement which gives the illusion of an infinite string of sign bits
-         extending to the left.
 
-      Booleans (:class:`bool`)
-         .. index::
-            pair: object; Boolean
-            single: False
-            single: True
+:class:`numbers.Real` (:class:`float`)
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-         These represent the truth values False and True.  The two objects representing
-         the values ``False`` and ``True`` are the only Boolean objects. The Boolean type is a
-         subtype of the integer type, and Boolean values behave like the values 0 and 1,
-         respectively, in almost all contexts, the exception being that when converted to
-         a string, the strings ``"False"`` or ``"True"`` are returned, respectively.
+.. index::
+   pair: object; floating point
+   pair: floating point; number
+   pair: C; language
+   pair: Java; language
 
-      .. index:: pair: integer; representation
+These represent machine-level double precision floating point numbers. You are
+at the mercy of the underlying machine architecture (and C or Java
+implementation) for the accepted range and handling of overflow. Python does not
+support single-precision floating point numbers; the savings in processor and
+memory usage that are usually the reason for using these are dwarfed by the
+overhead of using objects in Python, so there is no reason to complicate the
+language with two kinds of floating point numbers.
 
-      The rules for integer representation are intended to give the most meaningful
-      interpretation of shift and mask operations involving negative integers.
 
-   :class:`numbers.Real` (:class:`float`)
-      .. index::
-         pair: object; floating point
-         pair: floating point; number
-         pair: C; language
-         pair: Java; language
+:class:`numbers.Complex` (:class:`complex`)
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-      These represent machine-level double precision floating point numbers. You are
-      at the mercy of the underlying machine architecture (and C or Java
-      implementation) for the accepted range and handling of overflow. Python does not
-      support single-precision floating point numbers; the savings in processor and
-      memory usage that are usually the reason for using these are dwarfed by the
-      overhead of using objects in Python, so there is no reason to complicate the
-      language with two kinds of floating point numbers.
+.. index::
+   pair: object; complex
+   pair: complex; number
 
-   :class:`numbers.Complex` (:class:`complex`)
-      .. index::
-         pair: object; complex
-         pair: complex; number
+These represent complex numbers as a pair of machine-level double precision
+floating point numbers.  The same caveats apply as for floating point numbers.
+The real and imaginary parts of a complex number ``z`` can be retrieved through
+the read-only attributes ``z.real`` and ``z.imag``.
 
-      These represent complex numbers as a pair of machine-level double precision
-      floating point numbers.  The same caveats apply as for floating point numbers.
-      The real and imaginary parts of a complex number ``z`` can be retrieved through
-      the read-only attributes ``z.real`` and ``z.imag``.
 
 Sequences
+---------
+
+.. index::
+   pair: built-in function; len
+   pair: object; sequence
+   single: index operation
+   single: item selection
+   single: subscription
+
+These represent finite ordered sets indexed by non-negative numbers. The
+built-in function :func:`len` returns the number of items of a sequence. When
+the length of a sequence is *n*, the index set contains the numbers 0, 1,
+..., *n*-1.  Item *i* of sequence *a* is selected by ``a[i]``.
+
+.. index:: single: slicing
+
+Sequences also support slicing: ``a[i:j]`` selects all items with index *k* such
+that *i* ``<=`` *k* ``<`` *j*.  When used as an expression, a slice is a
+sequence of the same type.  This implies that the index set is renumbered so
+that it starts at 0.
+
+Some sequences also support "extended slicing" with a third "step" parameter:
+``a[i:j:k]`` selects all items of *a* with index *x* where ``x = i + n*k``, *n*
+``>=`` ``0`` and *i* ``<=`` *x* ``<`` *j*.
+
+Sequences are distinguished according to their mutability:
+
+
+Immutable sequences
+^^^^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: object; immutable sequence
+   pair: object; immutable
+
+An object of an immutable sequence type cannot change once it is created.  (If
+the object contains references to other objects, these other objects may be
+mutable and may be changed; however, the collection of objects directly
+referenced by an immutable object cannot change.)
+
+The following types are immutable sequences:
+
+.. index::
+   single: string; immutable sequences
+
+Strings
    .. index::
-      pair: built-in function; len
-      pair: object; sequence
-      single: index operation
-      single: item selection
-      single: subscription
-
-   These represent finite ordered sets indexed by non-negative numbers. The
-   built-in function :func:`len` returns the number of items of a sequence. When
-   the length of a sequence is *n*, the index set contains the numbers 0, 1,
-   ..., *n*-1.  Item *i* of sequence *a* is selected by ``a[i]``.
-
-   .. index:: single: slicing
-
-   Sequences also support slicing: ``a[i:j]`` selects all items with index *k* such
-   that *i* ``<=`` *k* ``<`` *j*.  When used as an expression, a slice is a
-   sequence of the same type.  This implies that the index set is renumbered so
-   that it starts at 0.
-
-   Some sequences also support "extended slicing" with a third "step" parameter:
-   ``a[i:j:k]`` selects all items of *a* with index *x* where ``x = i + n*k``, *n*
-   ``>=`` ``0`` and *i* ``<=`` *x* ``<`` *j*.
-
-   Sequences are distinguished according to their mutability:
-
-   Immutable sequences
-      .. index::
-         pair: object; immutable sequence
-         pair: object; immutable
-
-      An object of an immutable sequence type cannot change once it is created.  (If
-      the object contains references to other objects, these other objects may be
-      mutable and may be changed; however, the collection of objects directly
-      referenced by an immutable object cannot change.)
-
-      The following types are immutable sequences:
-
-      .. index::
-         single: string; immutable sequences
-
-      Strings
-         .. index::
-            pair: built-in function; chr
-            pair: built-in function; ord
-            single: character
-            single: integer
-            single: Unicode
-
-         A string is a sequence of values that represent Unicode code points.
-         All the code points in the range ``U+0000 - U+10FFFF`` can be
-         represented in a string.  Python doesn't have a :c:expr:`char` type;
-         instead, every code point in the string is represented as a string
-         object with length ``1``.  The built-in function :func:`ord`
-         converts a code point from its string form to an integer in the
-         range ``0 - 10FFFF``; :func:`chr` converts an integer in the range
-         ``0 - 10FFFF`` to the corresponding length ``1`` string object.
-         :meth:`str.encode` can be used to convert a :class:`str` to
-         :class:`bytes` using the given text encoding, and
-         :meth:`bytes.decode` can be used to achieve the opposite.
-
-      Tuples
-         .. index::
-            pair: object; tuple
-            pair: singleton; tuple
-            pair: empty; tuple
-
-         The items of a tuple are arbitrary Python objects. Tuples of two or
-         more items are formed by comma-separated lists of expressions.  A tuple
-         of one item (a 'singleton') can be formed by affixing a comma to an
-         expression (an expression by itself does not create a tuple, since
-         parentheses must be usable for grouping of expressions).  An empty
-         tuple can be formed by an empty pair of parentheses.
-
-      Bytes
-         .. index:: bytes, byte
-
-         A bytes object is an immutable array.  The items are 8-bit bytes,
-         represented by integers in the range 0 <= x < 256.  Bytes literals
-         (like ``b'abc'``) and the built-in :func:`bytes()` constructor
-         can be used to create bytes objects.  Also, bytes objects can be
-         decoded to strings via the :meth:`~bytes.decode` method.
-
-   Mutable sequences
-      .. index::
-         pair: object; mutable sequence
-         pair: object; mutable
-         pair: assignment; statement
-         single: subscription
-         single: slicing
-
-      Mutable sequences can be changed after they are created.  The subscription and
-      slicing notations can be used as the target of assignment and :keyword:`del`
-      (delete) statements.
-
-      There are currently two intrinsic mutable sequence types:
-
-      Lists
-         .. index:: pair: object; list
-
-         The items of a list are arbitrary Python objects.  Lists are formed by
-         placing a comma-separated list of expressions in square brackets. (Note
-         that there are no special cases needed to form lists of length 0 or 1.)
-
-      Byte Arrays
-         .. index:: bytearray
-
-         A bytearray object is a mutable array. They are created by the built-in
-         :func:`bytearray` constructor.  Aside from being mutable
-         (and hence unhashable), byte arrays otherwise provide the same interface
-         and functionality as immutable :class:`bytes` objects.
-
-      .. index:: pair: module; array
-
-      The extension module :mod:`array` provides an additional example of a
-      mutable sequence type, as does the :mod:`collections` module.
+      pair: built-in function; chr
+      pair: built-in function; ord
+      single: character
+      single: integer
+      single: Unicode
+
+   A string is a sequence of values that represent Unicode code points.
+   All the code points in the range ``U+0000 - U+10FFFF`` can be
+   represented in a string.  Python doesn't have a :c:expr:`char` type;
+   instead, every code point in the string is represented as a string
+   object with length ``1``.  The built-in function :func:`ord`
+   converts a code point from its string form to an integer in the
+   range ``0 - 10FFFF``; :func:`chr` converts an integer in the range
+   ``0 - 10FFFF`` to the corresponding length ``1`` string object.
+   :meth:`str.encode` can be used to convert a :class:`str` to
+   :class:`bytes` using the given text encoding, and
+   :meth:`bytes.decode` can be used to achieve the opposite.
+
+Tuples
+   .. index::
+      pair: object; tuple
+      pair: singleton; tuple
+      pair: empty; tuple
+
+   The items of a tuple are arbitrary Python objects. Tuples of two or
+   more items are formed by comma-separated lists of expressions.  A tuple
+   of one item (a 'singleton') can be formed by affixing a comma to an
+   expression (an expression by itself does not create a tuple, since
+   parentheses must be usable for grouping of expressions).  An empty
+   tuple can be formed by an empty pair of parentheses.
+
+Bytes
+   .. index:: bytes, byte
+
+   A bytes object is an immutable array.  The items are 8-bit bytes,
+   represented by integers in the range 0 <= x < 256.  Bytes literals
+   (like ``b'abc'``) and the built-in :func:`bytes()` constructor
+   can be used to create bytes objects.  Also, bytes objects can be
+   decoded to strings via the :meth:`~bytes.decode` method.
+
+
+Mutable sequences
+^^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: object; mutable sequence
+   pair: object; mutable
+   pair: assignment; statement
+   single: subscription
+   single: slicing
+
+Mutable sequences can be changed after they are created.  The subscription and
+slicing notations can be used as the target of assignment and :keyword:`del`
+(delete) statements.
+
+.. note::
+   .. index:: pair: module; array
+   .. index:: pair: module; collections
+
+   The :mod:`collections` and :mod:`array` module provide
+   additional examples of mutable sequence types.
+
+There are currently two intrinsic mutable sequence types:
+
+Lists
+   .. index:: pair: object; list
+
+   The items of a list are arbitrary Python objects.  Lists are formed by
+   placing a comma-separated list of expressions in square brackets. (Note
+   that there are no special cases needed to form lists of length 0 or 1.)
+
+Byte Arrays
+   .. index:: bytearray
+
+   A bytearray object is a mutable array. They are created by the built-in
+   :func:`bytearray` constructor.  Aside from being mutable
+   (and hence unhashable), byte arrays otherwise provide the same interface
+   and functionality as immutable :class:`bytes` objects.
+
 
 Set types
-   .. index::
-      pair: built-in function; len
-      pair: object; set type
+---------
 
-   These represent unordered, finite sets of unique, immutable objects. As such,
-   they cannot be indexed by any subscript. However, they can be iterated over, and
-   the built-in function :func:`len` returns the number of items in a set. Common
-   uses for sets are fast membership testing, removing duplicates from a sequence,
-   and computing mathematical operations such as intersection, union, difference,
-   and symmetric difference.
+.. index::
+   pair: built-in function; len
+   pair: object; set type
+
+These represent unordered, finite sets of unique, immutable objects. As such,
+they cannot be indexed by any subscript. However, they can be iterated over, and
+the built-in function :func:`len` returns the number of items in a set. Common
+uses for sets are fast membership testing, removing duplicates from a sequence,
+and computing mathematical operations such as intersection, union, difference,
+and symmetric difference.
+
+For set elements, the same immutability rules apply as for dictionary keys. Note
+that numeric types obey the normal rules for numeric comparison: if two numbers
+compare equal (e.g., ``1`` and ``1.0``), only one of them can be contained in a
+set.
+
+There are currently two intrinsic set types:
 
-   For set elements, the same immutability rules apply as for dictionary keys. Note
-   that numeric types obey the normal rules for numeric comparison: if two numbers
-   compare equal (e.g., ``1`` and ``1.0``), only one of them can be contained in a
-   set.
 
-   There are currently two intrinsic set types:
+Sets
+   .. index:: pair: object; set
 
-   Sets
-      .. index:: pair: object; set
+   These represent a mutable set. They are created by the built-in :func:`set`
+   constructor and can be modified afterwards by several methods, such as
+   :meth:`~set.add`.
 
-      These represent a mutable set. They are created by the built-in :func:`set`
-      constructor and can be modified afterwards by several methods, such as
-      :meth:`~set.add`.
 
-   Frozen sets
-      .. index:: pair: object; frozenset
+Frozen sets
+   .. index:: pair: object; frozenset
+
+   These represent an immutable set.  They are created by the built-in
+   :func:`frozenset` constructor.  As a frozenset is immutable and
+   :term:`hashable`, it can be used again as an element of another set, or as
+   a dictionary key.
 
-      These represent an immutable set.  They are created by the built-in
-      :func:`frozenset` constructor.  As a frozenset is immutable and
-      :term:`hashable`, it can be used again as an element of another set, or as
-      a dictionary key.
 
 Mappings
-   .. index::
-      pair: built-in function; len
-      single: subscription
-      pair: object; mapping
-
-   These represent finite sets of objects indexed by arbitrary index sets. The
-   subscript notation ``a[k]`` selects the item indexed by ``k`` from the mapping
-   ``a``; this can be used in expressions and as the target of assignments or
-   :keyword:`del` statements. The built-in function :func:`len` returns the number
-   of items in a mapping.
-
-   There is currently a single intrinsic mapping type:
-
-   Dictionaries
-      .. index:: pair: object; dictionary
-
-      These represent finite sets of objects indexed by nearly arbitrary values.  The
-      only types of values not acceptable as keys are values containing lists or
-      dictionaries or other mutable types that are compared by value rather than by
-      object identity, the reason being that the efficient implementation of
-      dictionaries requires a key's hash value to remain constant. Numeric types used
-      for keys obey the normal rules for numeric comparison: if two numbers compare
-      equal (e.g., ``1`` and ``1.0``) then they can be used interchangeably to index
-      the same dictionary entry.
-
-      Dictionaries preserve insertion order, meaning that keys will be produced
-      in the same order they were added sequentially over the dictionary.
-      Replacing an existing key does not change the order, however removing a key
-      and re-inserting it will add it to the end instead of keeping its old place.
-
-      Dictionaries are mutable; they can be created by the ``{...}`` notation (see
-      section :ref:`dict`).
-
-      .. index::
-         pair: module; dbm.ndbm
-         pair: module; dbm.gnu
-
-      The extension modules :mod:`dbm.ndbm` and :mod:`dbm.gnu` provide
-      additional examples of mapping types, as does the :mod:`collections`
-      module.
-
-      .. versionchanged:: 3.7
-         Dictionaries did not preserve insertion order in versions of Python before 3.6.
-         In CPython 3.6, insertion order was preserved, but it was considered
-         an implementation detail at that time rather than a language guarantee.
+--------
+
+.. index::
+   pair: built-in function; len
+   single: subscription
+   pair: object; mapping
+
+These represent finite sets of objects indexed by arbitrary index sets. The
+subscript notation ``a[k]`` selects the item indexed by ``k`` from the mapping
+``a``; this can be used in expressions and as the target of assignments or
+:keyword:`del` statements. The built-in function :func:`len` returns the number
+of items in a mapping.
+
+There is currently a single intrinsic mapping type:
+
+
+Dictionaries
+^^^^^^^^^^^^
+
+.. index:: pair: object; dictionary
+
+These represent finite sets of objects indexed by nearly arbitrary values.  The
+only types of values not acceptable as keys are values containing lists or
+dictionaries or other mutable types that are compared by value rather than by
+object identity, the reason being that the efficient implementation of
+dictionaries requires a key's hash value to remain constant. Numeric types used
+for keys obey the normal rules for numeric comparison: if two numbers compare
+equal (e.g., ``1`` and ``1.0``) then they can be used interchangeably to index
+the same dictionary entry.
+
+Dictionaries preserve insertion order, meaning that keys will be produced
+in the same order they were added sequentially over the dictionary.
+Replacing an existing key does not change the order, however removing a key
+and re-inserting it will add it to the end instead of keeping its old place.
+
+Dictionaries are mutable; they can be created by the ``{...}`` notation (see
+section :ref:`dict`).
+
+.. index::
+   pair: module; dbm.ndbm
+   pair: module; dbm.gnu
+
+The extension modules :mod:`dbm.ndbm` and :mod:`dbm.gnu` provide
+additional examples of mapping types, as does the :mod:`collections`
+module.
+
+.. versionchanged:: 3.7
+   Dictionaries did not preserve insertion order in versions of Python before 3.6.
+   In CPython 3.6, insertion order was preserved, but it was considered
+   an implementation detail at that time rather than a language guarantee.
+
 
 Callable types
-   .. index::
-      pair: object; callable
-      pair: function; call
-      single: invocation
-      pair: function; argument
-
-   These are the types to which the function call operation (see section
-   :ref:`calls`) can be applied:
-
-   User-defined functions
-      .. index::
-         pair: user-defined; function
-         pair: object; function
-         pair: object; user-defined function
-
-      A user-defined function object is created by a function definition (see
-      section :ref:`function`).  It should be called with an argument list
-      containing the same number of items as the function's formal parameter
-      list.
-
-      Special attributes:
-
-      .. tabularcolumns:: |l|L|l|
-
-      .. index::
-         single: __doc__ (function attribute)
-         single: __name__ (function attribute)
-         single: __module__ (function attribute)
-         single: __dict__ (function attribute)
-         single: __defaults__ (function attribute)
-         single: __closure__ (function attribute)
-         single: __code__ (function attribute)
-         single: __globals__ (function attribute)
-         single: __annotations__ (function attribute)
-         single: __kwdefaults__ (function attribute)
-         pair: global; namespace
-
-      +-------------------------+-------------------------------+-----------+
-      | Attribute               | Meaning                       |           |
-      +=========================+===============================+===========+
-      | :attr:`__doc__`         | The function's documentation  | Writable  |
-      |                         | string, or ``None`` if        |           |
-      |                         | unavailable; not inherited by |           |
-      |                         | subclasses.                   |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`~definition.\    | The function's name.          | Writable  |
-      | __name__`               |                               |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`~definition.\    | The function's                | Writable  |
-      | __qualname__`           | :term:`qualified name`.       |           |
-      |                         |                               |           |
-      |                         | .. versionadded:: 3.3         |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__module__`      | The name of the module the    | Writable  |
-      |                         | function was defined in, or   |           |
-      |                         | ``None`` if unavailable.      |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__defaults__`    | A tuple containing default    | Writable  |
-      |                         | argument values for those     |           |
-      |                         | arguments that have defaults, |           |
-      |                         | or ``None`` if no arguments   |           |
-      |                         | have a default value.         |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__code__`        | The code object representing  | Writable  |
-      |                         | the compiled function body.   |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__globals__`     | A reference to the dictionary | Read-only |
-      |                         | that holds the function's     |           |
-      |                         | global variables --- the      |           |
-      |                         | global namespace of the       |           |
-      |                         | module in which the function  |           |
-      |                         | was defined.                  |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`~object.__dict__`| The namespace supporting      | Writable  |
-      |                         | arbitrary function            |           |
-      |                         | attributes.                   |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__closure__`     | ``None`` or a tuple of cells  | Read-only |
-      |                         | that contain bindings for the |           |
-      |                         | function's free variables.    |           |
-      |                         | See below for information on  |           |
-      |                         | the ``cell_contents``         |           |
-      |                         | attribute.                    |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__annotations__` | A dict containing annotations | Writable  |
-      |                         | of parameters.  The keys of   |           |
-      |                         | the dict are the parameter    |           |
-      |                         | names, and ``'return'`` for   |           |
-      |                         | the return annotation, if     |           |
-      |                         | provided.  For more           |           |
-      |                         | information on working with   |           |
-      |                         | this attribute, see           |           |
-      |                         | :ref:`annotations-howto`.     |           |
-      +-------------------------+-------------------------------+-----------+
-      | :attr:`__kwdefaults__`  | A dict containing defaults    | Writable  |
-      |                         | for keyword-only parameters.  |           |
-      +-------------------------+-------------------------------+-----------+
-
-      Most of the attributes labelled "Writable" check the type of the assigned value.
-
-      Function objects also support getting and setting arbitrary attributes, which
-      can be used, for example, to attach metadata to functions.  Regular attribute
-      dot-notation is used to get and set such attributes. *Note that the current
-      implementation only supports function attributes on user-defined functions.
-      Function attributes on built-in functions may be supported in the future.*
-
-      A cell object has the attribute ``cell_contents``. This can be used to get
-      the value of the cell, as well as set the value.
-
-      Additional information about a function's definition can be retrieved from its
-      code object; see the description of internal types below. The
-      :data:`cell <types.CellType>` type can be accessed in the :mod:`types`
-      module.
-
-   Instance methods
-      .. index::
-         pair: object; method
-         pair: object; user-defined method
-         pair: user-defined; method
-
-      An instance method object combines a class, a class instance and any
-      callable object (normally a user-defined function).
-
-      .. index::
-         single: __func__ (method attribute)
-         single: __self__ (method attribute)
-         single: __doc__ (method attribute)
-         single: __name__ (method attribute)
-         single: __module__ (method attribute)
-
-      Special read-only attributes: :attr:`__self__` is the class instance object,
-      :attr:`__func__` is the function object; :attr:`__doc__` is the method's
-      documentation (same as ``__func__.__doc__``); :attr:`~definition.__name__` is the
-      method name (same as ``__func__.__name__``); :attr:`__module__` is the
-      name of the module the method was defined in, or ``None`` if unavailable.
-
-      Methods also support accessing (but not setting) the arbitrary function
-      attributes on the underlying function object.
-
-      User-defined method objects may be created when getting an attribute of a
-      class (perhaps via an instance of that class), if that attribute is a
-      user-defined function object or a class method object.
-
-      When an instance method object is created by retrieving a user-defined
-      function object from a class via one of its instances, its
-      :attr:`__self__` attribute is the instance, and the method object is said
-      to be bound.  The new method's :attr:`__func__` attribute is the original
-      function object.
-
-      When an instance method object is created by retrieving a class method
-      object from a class or instance, its :attr:`__self__` attribute is the
-      class itself, and its :attr:`__func__` attribute is the function object
-      underlying the class method.
-
-      When an instance method object is called, the underlying function
-      (:attr:`__func__`) is called, inserting the class instance
-      (:attr:`__self__`) in front of the argument list.  For instance, when
-      :class:`C` is a class which contains a definition for a function
-      :meth:`f`, and ``x`` is an instance of :class:`C`, calling ``x.f(1)`` is
-      equivalent to calling ``C.f(x, 1)``.
-
-      When an instance method object is derived from a class method object, the
-      "class instance" stored in :attr:`__self__` will actually be the class
-      itself, so that calling either ``x.f(1)`` or ``C.f(1)`` is equivalent to
-      calling ``f(C,1)`` where ``f`` is the underlying function.
-
-      Note that the transformation from function object to instance method
-      object happens each time the attribute is retrieved from the instance.  In
-      some cases, a fruitful optimization is to assign the attribute to a local
-      variable and call that local variable. Also notice that this
-      transformation only happens for user-defined functions; other callable
-      objects (and all non-callable objects) are retrieved without
-      transformation.  It is also important to note that user-defined functions
-      which are attributes of a class instance are not converted to bound
-      methods; this *only* happens when the function is an attribute of the
-      class.
-
-   Generator functions
-      .. index::
-         single: generator; function
-         single: generator; iterator
-
-      A function or method which uses the :keyword:`yield` statement (see section
-      :ref:`yield`) is called a :dfn:`generator function`.  Such a function, when
-      called, always returns an :term:`iterator` object which can be used to
-      execute the body of the function:  calling the iterator's
-      :meth:`iterator.__next__` method will cause the function to execute until
-      it provides a value using the :keyword:`!yield` statement.  When the
-      function executes a :keyword:`return` statement or falls off the end, a
-      :exc:`StopIteration` exception is raised and the iterator will have
-      reached the end of the set of values to be returned.
-
-   Coroutine functions
-      .. index::
-         single: coroutine; function
-
-      A function or method which is defined using :keyword:`async def` is called
-      a :dfn:`coroutine function`.  Such a function, when called, returns a
-      :term:`coroutine` object.  It may contain :keyword:`await` expressions,
-      as well as :keyword:`async with` and :keyword:`async for` statements. See
-      also the :ref:`coroutine-objects` section.
-
-   Asynchronous generator functions
-      .. index::
-         single: asynchronous generator; function
-         single: asynchronous generator; asynchronous iterator
-
-      A function or method which is defined using :keyword:`async def` and
-      which uses the :keyword:`yield` statement is called a
-      :dfn:`asynchronous generator function`.  Such a function, when called,
-      returns an :term:`asynchronous iterator` object which can be used in an
-      :keyword:`async for` statement to execute the body of the function.
-
-      Calling the asynchronous iterator's
-      :meth:`aiterator.__anext__ <object.__anext__>` method
-      will return an :term:`awaitable` which when awaited
-      will execute until it provides a value using the :keyword:`yield`
-      expression.  When the function executes an empty :keyword:`return`
-      statement or falls off the end, a :exc:`StopAsyncIteration` exception
-      is raised and the asynchronous iterator will have reached the end of
-      the set of values to be yielded.
-
-   Built-in functions
-      .. index::
-         pair: object; built-in function
-         pair: object; function
-         pair: C; language
-
-      A built-in function object is a wrapper around a C function.  Examples of
-      built-in functions are :func:`len` and :func:`math.sin` (:mod:`math` is a
-      standard built-in module). The number and type of the arguments are
-      determined by the C function. Special read-only attributes:
-      :attr:`__doc__` is the function's documentation string, or ``None`` if
-      unavailable; :attr:`~definition.__name__` is the function's name; :attr:`__self__` is
-      set to ``None`` (but see the next item); :attr:`__module__` is the name of
-      the module the function was defined in or ``None`` if unavailable.
-
-   Built-in methods
-      .. index::
-         pair: object; built-in method
-         pair: object; method
-         pair: built-in; method
-
-      This is really a different disguise of a built-in function, this time containing
-      an object passed to the C function as an implicit extra argument.  An example of
-      a built-in method is ``alist.append()``, assuming *alist* is a list object. In
-      this case, the special read-only attribute :attr:`__self__` is set to the object
-      denoted by *alist*.
-
-   Classes
-      Classes are callable.  These objects normally act as factories for new
-      instances of themselves, but variations are possible for class types that
-      override :meth:`~object.__new__`.  The arguments of the call are passed to
-      :meth:`__new__` and, in the typical case, to :meth:`~object.__init__` to
-      initialize the new instance.
-
-   Class Instances
-      Instances of arbitrary classes can be made callable by defining a
-      :meth:`~object.__call__` method in their class.
+--------------
+
+.. index::
+   pair: object; callable
+   pair: function; call
+   single: invocation
+   pair: function; argument
+
+These are the types to which the function call operation (see section
+:ref:`calls`) can be applied:
+
+
+.. _user-defined-funcs:
+
+User-defined functions
+^^^^^^^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: user-defined; function
+   pair: object; function
+   pair: object; user-defined function
+
+A user-defined function object is created by a function definition (see
+section :ref:`function`).  It should be called with an argument list
+containing the same number of items as the function's formal parameter
+list.
+
+Special attributes:
+
+.. tabularcolumns:: |l|L|l|
+
+.. index::
+   single: __doc__ (function attribute)
+   single: __name__ (function attribute)
+   single: __module__ (function attribute)
+   single: __dict__ (function attribute)
+   single: __defaults__ (function attribute)
+   single: __closure__ (function attribute)
+   single: __code__ (function attribute)
+   single: __globals__ (function attribute)
+   single: __annotations__ (function attribute)
+   single: __kwdefaults__ (function attribute)
+   single: __type_params__ (function attribute)
+   pair: global; namespace
+
++-------------------------+-------------------------------+-----------+
+| Attribute               | Meaning                       |           |
++=========================+===============================+===========+
+| :attr:`__doc__`         | The function's documentation  | Writable  |
+|                         | string, or ``None`` if        |           |
+|                         | unavailable; not inherited by |           |
+|                         | subclasses.                   |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`~definition.\    | The function's name.          | Writable  |
+| __name__`               |                               |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`~definition.\    | The function's                | Writable  |
+| __qualname__`           | :term:`qualified name`.       |           |
+|                         |                               |           |
+|                         | .. versionadded:: 3.3         |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__module__`      | The name of the module the    | Writable  |
+|                         | function was defined in, or   |           |
+|                         | ``None`` if unavailable.      |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__defaults__`    | A tuple containing default    | Writable  |
+|                         | argument values for those     |           |
+|                         | arguments that have defaults, |           |
+|                         | or ``None`` if no arguments   |           |
+|                         | have a default value.         |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__code__`        | The code object representing  | Writable  |
+|                         | the compiled function body.   |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__globals__`     | A reference to the dictionary | Read-only |
+|                         | that holds the function's     |           |
+|                         | global variables --- the      |           |
+|                         | global namespace of the       |           |
+|                         | module in which the function  |           |
+|                         | was defined.                  |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`~object.__dict__`| The namespace supporting      | Writable  |
+|                         | arbitrary function            |           |
+|                         | attributes.                   |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__closure__`     | ``None`` or a tuple of cells  | Read-only |
+|                         | that contain bindings for the |           |
+|                         | function's free variables.    |           |
+|                         | See below for information on  |           |
+|                         | the ``cell_contents``         |           |
+|                         | attribute.                    |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__annotations__` | A dict containing annotations | Writable  |
+|                         | of parameters.  The keys of   |           |
+|                         | the dict are the parameter    |           |
+|                         | names, and ``'return'`` for   |           |
+|                         | the return annotation, if     |           |
+|                         | provided.  For more           |           |
+|                         | information on working with   |           |
+|                         | this attribute, see           |           |
+|                         | :ref:`annotations-howto`.     |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__kwdefaults__`  | A dict containing defaults    | Writable  |
+|                         | for keyword-only parameters.  |           |
++-------------------------+-------------------------------+-----------+
+| :attr:`__type_params__` | A tuple containing the        | Writable  |
+|                         | :ref:`type parameters         |           |
+|                         | <type-params>` of a           |           |
+|                         | :ref:`generic function        |           |
+|                         | <generic-functions>`.         |           |
++-------------------------+-------------------------------+-----------+
+
+Most of the attributes labelled "Writable" check the type of the assigned value.
+
+Function objects also support getting and setting arbitrary attributes, which
+can be used, for example, to attach metadata to functions.  Regular attribute
+dot-notation is used to get and set such attributes. *Note that the current
+implementation only supports function attributes on user-defined functions.
+Function attributes on built-in functions may be supported in the future.*
+
+A cell object has the attribute ``cell_contents``. This can be used to get
+the value of the cell, as well as set the value.
+
+Additional information about a function's definition can be retrieved from its
+code object; see the description of internal types below. The
+:data:`cell <types.CellType>` type can be accessed in the :mod:`types`
+module.
+
+
+.. _instance-methods:
+
+Instance methods
+^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: object; method
+   pair: object; user-defined method
+   pair: user-defined; method
+
+An instance method object combines a class, a class instance and any
+callable object (normally a user-defined function).
+
+.. index::
+   single: __func__ (method attribute)
+   single: __self__ (method attribute)
+   single: __doc__ (method attribute)
+   single: __name__ (method attribute)
+   single: __module__ (method attribute)
+
+Special read-only attributes:
+
+.. list-table::
+
+   * - .. attribute:: method.__self__
+     - Refers to the class instance object to which the method is
+       :ref:`bound <method-binding>`
+
+   * - .. attribute:: method.__func__
+     - Refers to the original function object
+
+   * - .. attribute:: method.__doc__
+     - The method's documentation (same as :attr:`!method.__func__.__doc__`).
+       A :class:`string <str>` if the original function had a docstring, else
+       ``None``.
+
+   * - .. attribute:: method.__name__
+     - The name of the method (same as :attr:`!method.__func__.__name__`)
+
+   * - .. attribute:: method.__module__
+     - The name of the module the method was defined in, or ``None`` if
+       unavailable.
+
+Methods also support accessing (but not setting) the arbitrary function
+attributes on the underlying :ref:`function object <user-defined-funcs>`.
+
+User-defined method objects may be created when getting an attribute of a
+class (perhaps via an instance of that class), if that attribute is a
+user-defined :ref:`function object <user-defined-funcs>` or a
+:class:`classmethod` object.
+
+.. _method-binding:
+
+When an instance method object is created by retrieving a user-defined
+:ref:`function object <user-defined-funcs>` from a class via one of its
+instances, its :attr:`~method.__self__` attribute is the instance, and the
+method object is said to be *bound*.  The new method's :attr:`~method.__func__`
+attribute is the original function object.
+
+When an instance method object is created by retrieving a :class:`classmethod`
+object from a class or instance, its :attr:`~method.__self__` attribute is the
+class itself, and its :attr:`~method.__func__` attribute is the function object
+underlying the class method.
+
+When an instance method object is called, the underlying function
+(:attr:`~method.__func__`) is called, inserting the class instance
+(:attr:`~method.__self__`) in front of the argument list.  For instance, when
+:class:`!C` is a class which contains a definition for a function
+:meth:`!f`, and ``x`` is an instance of :class:`!C`, calling ``x.f(1)`` is
+equivalent to calling ``C.f(x, 1)``.
+
+When an instance method object is derived from a :class:`classmethod` object, the
+"class instance" stored in :attr:`~method.__self__` will actually be the class
+itself, so that calling either ``x.f(1)`` or ``C.f(1)`` is equivalent to
+calling ``f(C,1)`` where ``f`` is the underlying function.
+
+Note that the transformation from :ref:`function object <user-defined-funcs>`
+to instance method
+object happens each time the attribute is retrieved from the instance.  In
+some cases, a fruitful optimization is to assign the attribute to a local
+variable and call that local variable. Also notice that this
+transformation only happens for user-defined functions; other callable
+objects (and all non-callable objects) are retrieved without
+transformation.  It is also important to note that user-defined functions
+which are attributes of a class instance are not converted to bound
+methods; this *only* happens when the function is an attribute of the
+class.
+
+
+Generator functions
+^^^^^^^^^^^^^^^^^^^
+
+.. index::
+   single: generator; function
+   single: generator; iterator
+
+A function or method which uses the :keyword:`yield` statement (see section
+:ref:`yield`) is called a :dfn:`generator function`.  Such a function, when
+called, always returns an :term:`iterator` object which can be used to
+execute the body of the function:  calling the iterator's
+:meth:`iterator.__next__` method will cause the function to execute until
+it provides a value using the :keyword:`!yield` statement.  When the
+function executes a :keyword:`return` statement or falls off the end, a
+:exc:`StopIteration` exception is raised and the iterator will have
+reached the end of the set of values to be returned.
+
+
+Coroutine functions
+^^^^^^^^^^^^^^^^^^^
+
+.. index::
+   single: coroutine; function
+
+A function or method which is defined using :keyword:`async def` is called
+a :dfn:`coroutine function`.  Such a function, when called, returns a
+:term:`coroutine` object.  It may contain :keyword:`await` expressions,
+as well as :keyword:`async with` and :keyword:`async for` statements. See
+also the :ref:`coroutine-objects` section.
+
+
+Asynchronous generator functions
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. index::
+   single: asynchronous generator; function
+   single: asynchronous generator; asynchronous iterator
+
+A function or method which is defined using :keyword:`async def` and
+which uses the :keyword:`yield` statement is called a
+:dfn:`asynchronous generator function`.  Such a function, when called,
+returns an :term:`asynchronous iterator` object which can be used in an
+:keyword:`async for` statement to execute the body of the function.
+
+Calling the asynchronous iterator's
+:meth:`aiterator.__anext__ <object.__anext__>` method
+will return an :term:`awaitable` which when awaited
+will execute until it provides a value using the :keyword:`yield`
+expression.  When the function executes an empty :keyword:`return`
+statement or falls off the end, a :exc:`StopAsyncIteration` exception
+is raised and the asynchronous iterator will have reached the end of
+the set of values to be yielded.
+
+
+Built-in functions
+^^^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: object; built-in function
+   pair: object; function
+   pair: C; language
+
+A built-in function object is a wrapper around a C function.  Examples of
+built-in functions are :func:`len` and :func:`math.sin` (:mod:`math` is a
+standard built-in module). The number and type of the arguments are
+determined by the C function. Special read-only attributes:
+:attr:`__doc__` is the function's documentation string, or ``None`` if
+unavailable; :attr:`~definition.__name__` is the function's name; :attr:`__self__` is
+set to ``None`` (but see the next item); :attr:`__module__` is the name of
+the module the function was defined in or ``None`` if unavailable.
+
+
+.. _builtin-methods:
+
+Built-in methods
+^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: object; built-in method
+   pair: object; method
+   pair: built-in; method
+
+This is really a different disguise of a built-in function, this time containing
+an object passed to the C function as an implicit extra argument.  An example of
+a built-in method is ``alist.append()``, assuming *alist* is a list object. In
+this case, the special read-only attribute :attr:`!__self__` is set to the object
+denoted by *alist*. (The attribute has the same semantics as it does with
+:attr:`other instance methods <method.__self__>`.)
+
+
+Classes
+^^^^^^^
+
+Classes are callable.  These objects normally act as factories for new
+instances of themselves, but variations are possible for class types that
+override :meth:`~object.__new__`.  The arguments of the call are passed to
+:meth:`!__new__` and, in the typical case, to :meth:`~object.__init__` to
+initialize the new instance.
+
+
+Class Instances
+^^^^^^^^^^^^^^^
+
+Instances of arbitrary classes can be made callable by defining a
+:meth:`~object.__call__` method in their class.
 
 
 Modules
-   .. index::
-      pair: statement; import
-      pair: object; module
-
-   Modules are a basic organizational unit of Python code, and are created by
-   the :ref:`import system <importsystem>` as invoked either by the
-   :keyword:`import` statement, or by calling
-   functions such as :func:`importlib.import_module` and built-in
-   :func:`__import__`.  A module object has a namespace implemented by a
-   dictionary object (this is the dictionary referenced by the ``__globals__``
-   attribute of functions defined in the module).  Attribute references are
-   translated to lookups in this dictionary, e.g., ``m.x`` is equivalent to
-   ``m.__dict__["x"]``. A module object does not contain the code object used
-   to initialize the module (since it isn't needed once the initialization is
-   done).
-
-   Attribute assignment updates the module's namespace dictionary, e.g.,
-   ``m.x = 1`` is equivalent to ``m.__dict__["x"] = 1``.
+-------
 
-   .. index::
-      single: __name__ (module attribute)
-      single: __doc__ (module attribute)
-      single: __file__ (module attribute)
-      single: __annotations__ (module attribute)
-      pair: module; namespace
+.. index::
+   pair: statement; import
+   pair: object; module
+
+Modules are a basic organizational unit of Python code, and are created by
+the :ref:`import system <importsystem>` as invoked either by the
+:keyword:`import` statement, or by calling
+functions such as :func:`importlib.import_module` and built-in
+:func:`__import__`.  A module object has a namespace implemented by a
+dictionary object (this is the dictionary referenced by the ``__globals__``
+attribute of functions defined in the module).  Attribute references are
+translated to lookups in this dictionary, e.g., ``m.x`` is equivalent to
+``m.__dict__["x"]``. A module object does not contain the code object used
+to initialize the module (since it isn't needed once the initialization is
+done).
+
+Attribute assignment updates the module's namespace dictionary, e.g.,
+``m.x = 1`` is equivalent to ``m.__dict__["x"] = 1``.
 
-   Predefined (writable) attributes:
+.. index::
+   single: __name__ (module attribute)
+   single: __doc__ (module attribute)
+   single: __file__ (module attribute)
+   single: __annotations__ (module attribute)
+   pair: module; namespace
 
-      :attr:`__name__`
-         The module's name.
+Predefined (writable) attributes:
 
-      :attr:`__doc__`
-         The module's documentation string, or ``None`` if
-         unavailable.
+   :attr:`__name__`
+      The module's name.
 
-      :attr:`__file__`
-         The pathname of the file from which the
-         module was loaded, if it was loaded from a file.
-         The :attr:`__file__`
-         attribute may be missing for certain types of modules, such as C modules
-         that are statically linked into the interpreter.  For extension modules
-         loaded dynamically from a shared library, it's the pathname of the shared
-         library file.
+   :attr:`__doc__`
+      The module's documentation string, or ``None`` if
+      unavailable.
 
-      :attr:`__annotations__`
-         A dictionary containing
-         :term:`variable annotations <variable annotation>` collected during
-         module body execution.  For best practices on working
-         with :attr:`__annotations__`, please see :ref:`annotations-howto`.
+   :attr:`__file__`
+      The pathname of the file from which the
+      module was loaded, if it was loaded from a file.
+      The :attr:`__file__`
+      attribute may be missing for certain types of modules, such as C modules
+      that are statically linked into the interpreter.  For extension modules
+      loaded dynamically from a shared library, it's the pathname of the shared
+      library file.
 
-   .. index:: single: __dict__ (module attribute)
+   :attr:`__annotations__`
+      A dictionary containing
+      :term:`variable annotations <variable annotation>` collected during
+      module body execution.  For best practices on working
+      with :attr:`__annotations__`, please see :ref:`annotations-howto`.
 
-   Special read-only attribute: :attr:`~object.__dict__` is the module's
-   namespace as a dictionary object.
+.. index:: single: __dict__ (module attribute)
 
-   .. impl-detail::
+Special read-only attribute: :attr:`~object.__dict__` is the module's
+namespace as a dictionary object.
+
+.. impl-detail::
+
+   Because of the way CPython clears module dictionaries, the module
+   dictionary will be cleared when the module falls out of scope even if the
+   dictionary still has live references.  To avoid this, copy the dictionary
+   or keep the module around while using its dictionary directly.
 
-      Because of the way CPython clears module dictionaries, the module
-      dictionary will be cleared when the module falls out of scope even if the
-      dictionary still has live references.  To avoid this, copy the dictionary
-      or keep the module around while using its dictionary directly.
 
 Custom classes
-   Custom class types are typically created by class definitions (see section
-   :ref:`class`).  A class has a namespace implemented by a dictionary object.
-   Class attribute references are translated to lookups in this dictionary, e.g.,
-   ``C.x`` is translated to ``C.__dict__["x"]`` (although there are a number of
-   hooks which allow for other means of locating attributes). When the attribute
-   name is not found there, the attribute search continues in the base classes.
-   This search of the base classes uses the C3 method resolution order which
-   behaves correctly even in the presence of 'diamond' inheritance structures
-   where there are multiple inheritance paths leading back to a common ancestor.
-   Additional details on the C3 MRO used by Python can be found in the
-   documentation accompanying the 2.3 release at
-   https://www.python.org/download/releases/2.3/mro/.
-
-   .. XXX: Could we add that MRO doc as an appendix to the language ref?
+--------------
+
+Custom class types are typically created by class definitions (see section
+:ref:`class`).  A class has a namespace implemented by a dictionary object.
+Class attribute references are translated to lookups in this dictionary, e.g.,
+``C.x`` is translated to ``C.__dict__["x"]`` (although there are a number of
+hooks which allow for other means of locating attributes). When the attribute
+name is not found there, the attribute search continues in the base classes.
+This search of the base classes uses the C3 method resolution order which
+behaves correctly even in the presence of 'diamond' inheritance structures
+where there are multiple inheritance paths leading back to a common ancestor.
+Additional details on the C3 MRO used by Python can be found in the
+documentation accompanying the 2.3 release at
+https://www.python.org/download/releases/2.3/mro/.
+
+.. XXX: Could we add that MRO doc as an appendix to the language ref?
 
-   .. index::
-      pair: object; class
-      pair: object; class instance
-      pair: object; instance
-      pair: class object; call
-      single: container
-      pair: object; dictionary
-      pair: class; attribute
+.. index::
+   pair: object; class
+   pair: object; class instance
+   pair: object; instance
+   pair: class object; call
+   single: container
+   pair: object; dictionary
+   pair: class; attribute
 
-   When a class attribute reference (for class :class:`C`, say) would yield a
-   class method object, it is transformed into an instance method object whose
-   :attr:`__self__` attribute is :class:`C`.  When it would yield a static
-   method object, it is transformed into the object wrapped by the static method
-   object. See section :ref:`descriptors` for another way in which attributes
-   retrieved from a class may differ from those actually contained in its
-   :attr:`~object.__dict__`.
+When a class attribute reference (for class :class:`!C`, say) would yield a
+class method object, it is transformed into an instance method object whose
+:attr:`~method.__self__` attribute is :class:`!C`.
+When it would yield a :class:`staticmethod` object,
+it is transformed into the object wrapped by the static method
+object. See section :ref:`descriptors` for another way in which attributes
+retrieved from a class may differ from those actually contained in its
+:attr:`~object.__dict__`.
 
-   .. index:: triple: class; attribute; assignment
+.. index:: triple: class; attribute; assignment
 
-   Class attribute assignments update the class's dictionary, never the dictionary
-   of a base class.
+Class attribute assignments update the class's dictionary, never the dictionary
+of a base class.
 
-   .. index:: pair: class object; call
+.. index:: pair: class object; call
 
-   A class object can be called (see above) to yield a class instance (see below).
+A class object can be called (see above) to yield a class instance (see below).
 
-   .. index::
-      single: __name__ (class attribute)
-      single: __module__ (class attribute)
-      single: __dict__ (class attribute)
-      single: __bases__ (class attribute)
-      single: __doc__ (class attribute)
-      single: __annotations__ (class attribute)
+.. index::
+   single: __name__ (class attribute)
+   single: __module__ (class attribute)
+   single: __dict__ (class attribute)
+   single: __bases__ (class attribute)
+   single: __doc__ (class attribute)
+   single: __annotations__ (class attribute)
+   single: __type_params__ (class attribute)
 
-   Special attributes:
+Special attributes:
 
-      :attr:`~definition.__name__`
-         The class name.
+   :attr:`~definition.__name__`
+      The class name.
 
-      :attr:`__module__`
-         The name of the module in which the class was defined.
+   :attr:`__module__`
+      The name of the module in which the class was defined.
 
-      :attr:`~object.__dict__`
-         The dictionary containing the class's namespace.
+   :attr:`~object.__dict__`
+      The dictionary containing the class's namespace.
+
+   :attr:`~class.__bases__`
+      A tuple containing the base classes, in the order of
+      their occurrence in the base class list.
 
-      :attr:`~class.__bases__`
-         A tuple containing the base classes, in the order of
-         their occurrence in the base class list.
+   :attr:`__doc__`
+      The class's documentation string, or ``None`` if undefined.
 
-      :attr:`__doc__`
-         The class's documentation string, or ``None`` if undefined.
+   :attr:`__annotations__`
+      A dictionary containing
+      :term:`variable annotations <variable annotation>`
+      collected during class body execution.  For best practices on
+      working with :attr:`__annotations__`, please see
+      :ref:`annotations-howto`.
+
+   :attr:`__type_params__`
+      A tuple containing the :ref:`type parameters <type-params>` of
+      a :ref:`generic class <generic-classes>`.
 
-      :attr:`__annotations__`
-         A dictionary containing
-         :term:`variable annotations <variable annotation>`
-         collected during class body execution.  For best practices on
-         working with :attr:`__annotations__`, please see
-         :ref:`annotations-howto`.
 
 Class instances
-   .. index::
-      pair: object; class instance
-      pair: object; instance
-      pair: class; instance
-      pair: class instance; attribute
-
-   A class instance is created by calling a class object (see above).  A class
-   instance has a namespace implemented as a dictionary which is the first place
-   in which attribute references are searched.  When an attribute is not found
-   there, and the instance's class has an attribute by that name, the search
-   continues with the class attributes.  If a class attribute is found that is a
-   user-defined function object, it is transformed into an instance method
-   object whose :attr:`__self__` attribute is the instance.  Static method and
-   class method objects are also transformed; see above under "Classes".  See
-   section :ref:`descriptors` for another way in which attributes of a class
-   retrieved via its instances may differ from the objects actually stored in
-   the class's :attr:`~object.__dict__`.  If no class attribute is found, and the
-   object's class has a :meth:`~object.__getattr__` method, that is called to satisfy
-   the lookup.
-
-   .. index:: triple: class instance; attribute; assignment
-
-   Attribute assignments and deletions update the instance's dictionary, never a
-   class's dictionary.  If the class has a :meth:`~object.__setattr__` or
-   :meth:`~object.__delattr__` method, this is called instead of updating the instance
-   dictionary directly.
+---------------
 
-   .. index::
-      pair: object; numeric
-      pair: object; sequence
-      pair: object; mapping
+.. index::
+   pair: object; class instance
+   pair: object; instance
+   pair: class; instance
+   pair: class instance; attribute
+
+A class instance is created by calling a class object (see above).  A class
+instance has a namespace implemented as a dictionary which is the first place
+in which attribute references are searched.  When an attribute is not found
+there, and the instance's class has an attribute by that name, the search
+continues with the class attributes.  If a class attribute is found that is a
+user-defined function object, it is transformed into an instance method
+object whose :attr:`~method.__self__` attribute is the instance.  Static method and
+class method objects are also transformed; see above under "Classes".  See
+section :ref:`descriptors` for another way in which attributes of a class
+retrieved via its instances may differ from the objects actually stored in
+the class's :attr:`~object.__dict__`.  If no class attribute is found, and the
+object's class has a :meth:`~object.__getattr__` method, that is called to satisfy
+the lookup.
+
+.. index:: triple: class instance; attribute; assignment
+
+Attribute assignments and deletions update the instance's dictionary, never a
+class's dictionary.  If the class has a :meth:`~object.__setattr__` or
+:meth:`~object.__delattr__` method, this is called instead of updating the instance
+dictionary directly.
 
-   Class instances can pretend to be numbers, sequences, or mappings if they have
-   methods with certain special names.  See section :ref:`specialnames`.
+.. index::
+   pair: object; numeric
+   pair: object; sequence
+   pair: object; mapping
 
-   .. index::
-      single: __dict__ (instance attribute)
-      single: __class__ (instance attribute)
+Class instances can pretend to be numbers, sequences, or mappings if they have
+methods with certain special names.  See section :ref:`specialnames`.
+
+.. index::
+   single: __dict__ (instance attribute)
+   single: __class__ (instance attribute)
+
+Special attributes: :attr:`~object.__dict__` is the attribute dictionary;
+:attr:`~instance.__class__` is the instance's class.
 
-   Special attributes: :attr:`~object.__dict__` is the attribute dictionary;
-   :attr:`~instance.__class__` is the instance's class.
 
 I/O objects (also known as file objects)
-   .. index::
-      pair: built-in function; open
-      pair: module; io
-      single: popen() (in module os)
-      single: makefile() (socket method)
-      single: sys.stdin
-      single: sys.stdout
-      single: sys.stderr
-      single: stdio
-      single: stdin (in module sys)
-      single: stdout (in module sys)
-      single: stderr (in module sys)
-
-   A :term:`file object` represents an open file.  Various shortcuts are
-   available to create file objects: the :func:`open` built-in function, and
-   also :func:`os.popen`, :func:`os.fdopen`, and the
-   :meth:`~socket.socket.makefile` method of socket objects (and perhaps by
-   other functions or methods provided by extension modules).
-
-   The objects ``sys.stdin``, ``sys.stdout`` and ``sys.stderr`` are
-   initialized to file objects corresponding to the interpreter's standard
-   input, output and error streams; they are all open in text mode and
-   therefore follow the interface defined by the :class:`io.TextIOBase`
-   abstract class.
+----------------------------------------
+
+.. index::
+   pair: built-in function; open
+   pair: module; io
+   single: popen() (in module os)
+   single: makefile() (socket method)
+   single: sys.stdin
+   single: sys.stdout
+   single: sys.stderr
+   single: stdio
+   single: stdin (in module sys)
+   single: stdout (in module sys)
+   single: stderr (in module sys)
+
+A :term:`file object` represents an open file.  Various shortcuts are
+available to create file objects: the :func:`open` built-in function, and
+also :func:`os.popen`, :func:`os.fdopen`, and the
+:meth:`~socket.socket.makefile` method of socket objects (and perhaps by
+other functions or methods provided by extension modules).
+
+The objects ``sys.stdin``, ``sys.stdout`` and ``sys.stderr`` are
+initialized to file objects corresponding to the interpreter's standard
+input, output and error streams; they are all open in text mode and
+therefore follow the interface defined by the :class:`io.TextIOBase`
+abstract class.
+
 
 Internal types
-   .. index::
-      single: internal type
-      single: types, internal
-
-   A few types used internally by the interpreter are exposed to the user. Their
-   definitions may change with future versions of the interpreter, but they are
-   mentioned here for completeness.
-
-   .. index:: bytecode, object; code, code object
-
-   Code objects
-      Code objects represent *byte-compiled* executable Python code, or :term:`bytecode`.
-      The difference between a code object and a function object is that the function
-      object contains an explicit reference to the function's globals (the module in
-      which it was defined), while a code object contains no context; also the default
-      argument values are stored in the function object, not in the code object
-      (because they represent values calculated at run-time).  Unlike function
-      objects, code objects are immutable and contain no references (directly or
-      indirectly) to mutable objects.
-
-      .. index::
-         single: co_argcount (code object attribute)
-         single: co_posonlyargcount (code object attribute)
-         single: co_kwonlyargcount (code object attribute)
-         single: co_code (code object attribute)
-         single: co_consts (code object attribute)
-         single: co_filename (code object attribute)
-         single: co_firstlineno (code object attribute)
-         single: co_flags (code object attribute)
-         single: co_lnotab (code object attribute)
-         single: co_name (code object attribute)
-         single: co_names (code object attribute)
-         single: co_nlocals (code object attribute)
-         single: co_stacksize (code object attribute)
-         single: co_varnames (code object attribute)
-         single: co_cellvars (code object attribute)
-         single: co_freevars (code object attribute)
-         single: co_qualname (code object attribute)
-
-      Special read-only attributes: :attr:`co_name` gives the function name;
-      :attr:`co_qualname` gives the fully qualified function name;
-      :attr:`co_argcount` is the total number of positional arguments
-      (including positional-only arguments and arguments with default values);
-      :attr:`co_posonlyargcount` is the number of positional-only arguments
-      (including arguments with default values); :attr:`co_kwonlyargcount` is
-      the number of keyword-only arguments (including arguments with default
-      values); :attr:`co_nlocals` is the number of local variables used by the
-      function (including arguments); :attr:`co_varnames` is a tuple containing
-      the names of the local variables (starting with the argument names);
-      :attr:`co_cellvars` is a tuple containing the names of local variables
-      that are referenced by nested functions; :attr:`co_freevars` is a tuple
-      containing the names of free variables; :attr:`co_code` is a string
-      representing the sequence of bytecode instructions; :attr:`co_consts` is
-      a tuple containing the literals used by the bytecode; :attr:`co_names` is
-      a tuple containing the names used by the bytecode; :attr:`co_filename` is
-      the filename from which the code was compiled; :attr:`co_firstlineno` is
-      the first line number of the function; :attr:`co_lnotab` is a string
-      encoding the mapping from bytecode offsets to line numbers (for details
-      see the source code of the interpreter, is deprecated since 3.12
-      and may be removed in 3.14); :attr:`co_stacksize` is the
-      required stack size; :attr:`co_flags` is an integer encoding a number
-      of flags for the interpreter.
-
-      .. index:: pair: object; generator
-
-      The following flag bits are defined for :attr:`co_flags`: bit ``0x04`` is set if
-      the function uses the ``*arguments`` syntax to accept an arbitrary number of
-      positional arguments; bit ``0x08`` is set if the function uses the
-      ``**keywords`` syntax to accept arbitrary keyword arguments; bit ``0x20`` is set
-      if the function is a generator.
-
-      Future feature declarations (``from __future__ import division``) also use bits
-      in :attr:`co_flags` to indicate whether a code object was compiled with a
-      particular feature enabled: bit ``0x2000`` is set if the function was compiled
-      with future division enabled; bits ``0x10`` and ``0x1000`` were used in earlier
-      versions of Python.
-
-      Other bits in :attr:`co_flags` are reserved for internal use.
-
-      .. index:: single: documentation string
-
-      If a code object represents a function, the first item in :attr:`co_consts` is
-      the documentation string of the function, or ``None`` if undefined.
-
-      .. method:: codeobject.co_positions()
-
-         Returns an iterable over the source code positions of each bytecode
-         instruction in the code object.
-
-         The iterator returns tuples containing the ``(start_line, end_line,
-         start_column, end_column)``. The *i-th* tuple corresponds to the
-         position of the source code that compiled to the *i-th* instruction.
-         Column information is 0-indexed utf-8 byte offsets on the given source
-         line.
-
-         This positional information can be missing. A non-exhaustive lists of
-         cases where this may happen:
-
-         - Running the interpreter with :option:`-X` ``no_debug_ranges``.
-         - Loading a pyc file compiled while using :option:`-X` ``no_debug_ranges``.
-         - Position tuples corresponding to artificial instructions.
-         - Line and column numbers that can't be represented due to
-           implementation specific limitations.
-
-         When this occurs, some or all of the tuple elements can be
-         :const:`None`.
-
-         .. versionadded:: 3.11
-
-         .. note::
-            This feature requires storing column positions in code objects which may
-            result in a small increase of disk usage of compiled Python files or
-            interpreter memory usage. To avoid storing the extra information and/or
-            deactivate printing the extra traceback information, the
-            :option:`-X` ``no_debug_ranges`` command line flag or the :envvar:`PYTHONNODEBUGRANGES`
-            environment variable can be used.
-
-   .. _frame-objects:
-
-   Frame objects
-      .. index:: pair: object; frame
-
-      Frame objects represent execution frames.  They may occur in traceback objects
-      (see below), and are also passed to registered trace functions.
-
-      .. index::
-         single: f_back (frame attribute)
-         single: f_code (frame attribute)
-         single: f_globals (frame attribute)
-         single: f_locals (frame attribute)
-         single: f_lasti (frame attribute)
-         single: f_builtins (frame attribute)
-
-      Special read-only attributes: :attr:`f_back` is to the previous stack frame
-      (towards the caller), or ``None`` if this is the bottom stack frame;
-      :attr:`f_code` is the code object being executed in this frame; :attr:`f_locals`
-      is the dictionary used to look up local variables; :attr:`f_globals` is used for
-      global variables; :attr:`f_builtins` is used for built-in (intrinsic) names;
-      :attr:`f_lasti` gives the precise instruction (this is an index into the
-      bytecode string of the code object).
-
-      Accessing ``f_code`` raises an :ref:`auditing event <auditing>`
-      ``object.__getattr__`` with arguments ``obj`` and ``"f_code"``.
-
-      .. index::
-         single: f_trace (frame attribute)
-         single: f_trace_lines (frame attribute)
-         single: f_trace_opcodes (frame attribute)
-         single: f_lineno (frame attribute)
-
-      Special writable attributes: :attr:`f_trace`, if not ``None``, is a function
-      called for various events during code execution (this is used by the debugger).
-      Normally an event is triggered for each new source line - this can be
-      disabled by setting :attr:`f_trace_lines` to :const:`False`.
-
-      Implementations *may* allow per-opcode events to be requested by setting
-      :attr:`f_trace_opcodes` to :const:`True`. Note that this may lead to
-      undefined interpreter behaviour if exceptions raised by the trace
-      function escape to the function being traced.
-
-      :attr:`f_lineno` is the current line number of the frame --- writing to this
-      from within a trace function jumps to the given line (only for the bottom-most
-      frame).  A debugger can implement a Jump command (aka Set Next Statement)
-      by writing to f_lineno.
-
-      Frame objects support one method:
-
-      .. method:: frame.clear()
-
-         This method clears all references to local variables held by the
-         frame.  Also, if the frame belonged to a generator, the generator
-         is finalized.  This helps break reference cycles involving frame
-         objects (for example when catching an exception and storing its
-         traceback for later use).
-
-         :exc:`RuntimeError` is raised if the frame is currently executing.
-
-         .. versionadded:: 3.4
-
-   .. _traceback-objects:
-
-   Traceback objects
-      .. index::
-         pair: object; traceback
-         pair: stack; trace
-         pair: exception; handler
-         pair: execution; stack
-         single: exc_info (in module sys)
-         single: last_traceback (in module sys)
-         single: sys.exc_info
-         single: sys.exception
-         single: sys.last_traceback
-
-      Traceback objects represent a stack trace of an exception.  A traceback object
-      is implicitly created when an exception occurs, and may also be explicitly
-      created by calling :class:`types.TracebackType`.
-
-      For implicitly created tracebacks, when the search for an exception handler
-      unwinds the execution stack, at each unwound level a traceback object is
-      inserted in front of the current traceback.  When an exception handler is
-      entered, the stack trace is made available to the program. (See section
-      :ref:`try`.) It is accessible as the third item of the
-      tuple returned by ``sys.exc_info()``, and as the ``__traceback__`` attribute
-      of the caught exception.
-
-      When the program contains no suitable
-      handler, the stack trace is written (nicely formatted) to the standard error
-      stream; if the interpreter is interactive, it is also made available to the user
-      as ``sys.last_traceback``.
-
-      For explicitly created tracebacks, it is up to the creator of the traceback
-      to determine how the ``tb_next`` attributes should be linked to form a
-      full stack trace.
-
-      .. index::
-         single: tb_frame (traceback attribute)
-         single: tb_lineno (traceback attribute)
-         single: tb_lasti (traceback attribute)
-         pair: statement; try
-
-      Special read-only attributes:
-      :attr:`tb_frame` points to the execution frame of the current level;
-      :attr:`tb_lineno` gives the line number where the exception occurred;
-      :attr:`tb_lasti` indicates the precise instruction.
-      The line number and last instruction in the traceback may differ from the
-      line number of its frame object if the exception occurred in a
-      :keyword:`try` statement with no matching except clause or with a
-      finally clause.
-
-      Accessing ``tb_frame`` raises an :ref:`auditing event <auditing>`
-      ``object.__getattr__`` with arguments ``obj`` and ``"tb_frame"``.
-
-      .. index::
-         single: tb_next (traceback attribute)
-
-      Special writable attribute: :attr:`tb_next` is the next level in the stack
-      trace (towards the frame where the exception occurred), or ``None`` if
-      there is no next level.
-
-      .. versionchanged:: 3.7
-         Traceback objects can now be explicitly instantiated from Python code,
-         and the ``tb_next`` attribute of existing instances can be updated.
-
-   Slice objects
-      .. index:: pair: built-in function; slice
-
-      Slice objects are used to represent slices for
-      :meth:`~object.__getitem__`
-      methods.  They are also created by the built-in :func:`slice` function.
-
-      .. index::
-         single: start (slice object attribute)
-         single: stop (slice object attribute)
-         single: step (slice object attribute)
-
-      Special read-only attributes: :attr:`~slice.start` is the lower bound;
-      :attr:`~slice.stop` is the upper bound; :attr:`~slice.step` is the step
-      value; each is ``None`` if omitted.  These attributes can have any type.
-
-      Slice objects support one method:
-
-      .. method:: slice.indices(self, length)
-
-         This method takes a single integer argument *length* and computes
-         information about the slice that the slice object would describe if
-         applied to a sequence of *length* items.  It returns a tuple of three
-         integers; respectively these are the *start* and *stop* indices and the
-         *step* or stride length of the slice. Missing or out-of-bounds indices
-         are handled in a manner consistent with regular slices.
-
-   Static method objects
-      Static method objects provide a way of defeating the transformation of function
-      objects to method objects described above. A static method object is a wrapper
-      around any other object, usually a user-defined method object. When a static
-      method object is retrieved from a class or a class instance, the object actually
-      returned is the wrapped object, which is not subject to any further
-      transformation. Static method objects are also callable. Static method
-      objects are created by the built-in :func:`staticmethod` constructor.
-
-   Class method objects
-      A class method object, like a static method object, is a wrapper around another
-      object that alters the way in which that object is retrieved from classes and
-      class instances. The behaviour of class method objects upon such retrieval is
-      described above, under "User-defined methods". Class method objects are created
-      by the built-in :func:`classmethod` constructor.
+--------------
+
+.. index::
+   single: internal type
+   single: types, internal
+
+A few types used internally by the interpreter are exposed to the user. Their
+definitions may change with future versions of the interpreter, but they are
+mentioned here for completeness.
+
+
+.. _code-objects:
+
+Code objects
+^^^^^^^^^^^^
+
+.. index:: bytecode, object; code, code object
+
+Code objects represent *byte-compiled* executable Python code, or :term:`bytecode`.
+The difference between a code object and a function object is that the function
+object contains an explicit reference to the function's globals (the module in
+which it was defined), while a code object contains no context; also the default
+argument values are stored in the function object, not in the code object
+(because they represent values calculated at run-time).  Unlike function
+objects, code objects are immutable and contain no references (directly or
+indirectly) to mutable objects.
+
+.. index::
+   single: co_argcount (code object attribute)
+   single: co_posonlyargcount (code object attribute)
+   single: co_kwonlyargcount (code object attribute)
+   single: co_code (code object attribute)
+   single: co_consts (code object attribute)
+   single: co_filename (code object attribute)
+   single: co_firstlineno (code object attribute)
+   single: co_flags (code object attribute)
+   single: co_lnotab (code object attribute)
+   single: co_name (code object attribute)
+   single: co_names (code object attribute)
+   single: co_nlocals (code object attribute)
+   single: co_stacksize (code object attribute)
+   single: co_varnames (code object attribute)
+   single: co_cellvars (code object attribute)
+   single: co_freevars (code object attribute)
+   single: co_qualname (code object attribute)
+
+Special read-only attributes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. list-table::
+
+   * - .. attribute:: codeobject.co_name
+     - The function name
+
+   * - .. attribute:: codeobject.co_qualname
+     - The fully qualified function name
+
+   * - .. attribute:: codeobject.co_argcount
+     - The total number of positional :term:`parameters <parameter>`
+       (including positional-only parameters and parameters with default values)
+       that the function has
+
+   * - .. attribute:: codeobject.co_posonlyargcount
+     - The number of positional-only :term:`parameters <parameter>`
+       (including arguments with default values) that the function has
+
+   * - .. attribute:: codeobject.co_kwonlyargcount
+     - The number of keyword-only :term:`parameters <parameter>`
+       (including arguments with default values) that the function has
+
+   * - .. attribute:: codeobject.co_nlocals
+     - The number of :ref:`local variables <naming>` used by the function
+       (including parameters)
+
+   * - .. attribute:: codeobject.co_varnames
+     - A :class:`tuple` containing the names of the local variables in the
+       function (starting with the parameter names)
+
+   * - .. attribute:: codeobject.co_cellvars
+     - A :class:`tuple` containing the names of :ref:`local variables <naming>`
+       that are referenced by nested functions inside the function
+
+   * - .. attribute:: codeobject.co_freevars
+     - A :class:`tuple` containing the names of free variables in the function
+
+   * - .. attribute:: codeobject.co_code
+     - A string representing the sequence of :term:`bytecode` instructions in
+       the function
+
+   * - .. attribute:: codeobject.co_consts
+     - A :class:`tuple` containing the literals used by the :term:`bytecode` in
+       the function
+
+   * - .. attribute:: codeobject.co_names
+     - A :class:`tuple` containing the names used by the :term:`bytecode` in
+       the function
+
+   * - .. attribute:: codeobject.co_filename
+     - The name of the file from which the code was compiled
+
+   * - .. attribute:: codeobject.co_firstlineno
+     - The line number of the first line of the function
+
+   * - .. attribute:: codeobject.co_lnotab
+     - A string encoding the mapping from :term:`bytecode` offsets to line
+       numbers. For details, see the source code of the interpreter.
+
+       .. deprecated:: 3.12
+          This attribute of code objects is deprecated, and may be removed in
+          Python 3.14.
+
+   * - .. attribute:: codeobject.co_stacksize
+     - The required stack size of the code object
+
+   * - .. attribute:: codeobject.co_flags
+     - An :class:`integer <int>` encoding a number of flags for the
+       interpreter.
+
+.. index:: pair: object; generator
+
+The following flag bits are defined for :attr:`~codeobject.co_flags`:
+bit ``0x04`` is set if
+the function uses the ``*arguments`` syntax to accept an arbitrary number of
+positional arguments; bit ``0x08`` is set if the function uses the
+``**keywords`` syntax to accept arbitrary keyword arguments; bit ``0x20`` is set
+if the function is a generator. See :ref:`inspect-module-co-flags` for details
+on the semantics of each flags that might be present.
+
+Future feature declarations (``from __future__ import division``) also use bits
+in :attr:`~codeobject.co_flags` to indicate whether a code object was compiled with a
+particular feature enabled: bit ``0x2000`` is set if the function was compiled
+with future division enabled; bits ``0x10`` and ``0x1000`` were used in earlier
+versions of Python.
+
+Other bits in :attr:`~codeobject.co_flags` are reserved for internal use.
+
+.. index:: single: documentation string
+
+If a code object represents a function, the first item in
+:attr:`~codeobject.co_consts` is
+the documentation string of the function, or ``None`` if undefined.
+
+The :meth:`!co_positions` method
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. method:: codeobject.co_positions()
+
+   Returns an iterable over the source code positions of each :term:`bytecode`
+   instruction in the code object.
+
+   The iterator returns :class:`tuple`\s containing the ``(start_line, end_line,
+   start_column, end_column)``. The *i-th* tuple corresponds to the
+   position of the source code that compiled to the *i-th* instruction.
+   Column information is 0-indexed utf-8 byte offsets on the given source
+   line.
+
+   This positional information can be missing. A non-exhaustive lists of
+   cases where this may happen:
+
+   - Running the interpreter with :option:`-X` ``no_debug_ranges``.
+   - Loading a pyc file compiled while using :option:`-X` ``no_debug_ranges``.
+   - Position tuples corresponding to artificial instructions.
+   - Line and column numbers that can't be represented due to
+     implementation specific limitations.
+
+   When this occurs, some or all of the tuple elements can be
+   :const:`None`.
+
+   .. versionadded:: 3.11
+
+   .. note::
+      This feature requires storing column positions in code objects which may
+      result in a small increase of disk usage of compiled Python files or
+      interpreter memory usage. To avoid storing the extra information and/or
+      deactivate printing the extra traceback information, the
+      :option:`-X` ``no_debug_ranges`` command line flag or the :envvar:`PYTHONNODEBUGRANGES`
+      environment variable can be used.
+
+
+.. _frame-objects:
+
+Frame objects
+^^^^^^^^^^^^^
+
+.. index:: pair: object; frame
+
+Frame objects represent execution frames.  They may occur in traceback objects
+(see below), and are also passed to registered trace functions.
+
+.. index::
+   single: f_back (frame attribute)
+   single: f_code (frame attribute)
+   single: f_globals (frame attribute)
+   single: f_locals (frame attribute)
+   single: f_lasti (frame attribute)
+   single: f_builtins (frame attribute)
+
+Special read-only attributes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. list-table::
+
+   * - .. attribute:: frame.f_back
+     - Points to the previous stack frame (towards the caller),
+       or ``None`` if this is the bottom stack frame
+
+   * - .. attribute:: frame.f_code
+     - The :ref:`code object <code-objects>` being executed in this frame.
+       Accessing this attribute raises an :ref:`auditing event <auditing>`
+       ``object.__getattr__`` with arguments ``obj`` and ``"f_code"``.
+
+   * - .. attribute:: frame.f_locals
+     - The dictionary used by the frame to look up
+       :ref:`local variables <naming>`
+
+   * - .. attribute:: frame.f_globals
+     - The dictionary used by the frame to look up
+       :ref:`global variables <naming>`
+
+   * - .. attribute:: frame.f_builtins
+     - The dictionary used by the frame to look up
+       :ref:`built-in (intrinsic) names <naming>`
+
+   * - .. attribute:: frame.f_lasti
+     - The "precise instruction" of the frame object
+       (this is an index into the :term:`bytecode` string of the
+       :ref:`code object <code-objects>`)
+
+.. index::
+   single: f_trace (frame attribute)
+   single: f_trace_lines (frame attribute)
+   single: f_trace_opcodes (frame attribute)
+   single: f_lineno (frame attribute)
+
+Special writable attributes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. list-table::
+
+   * - .. attribute:: frame.f_trace
+     - If not ``None``, this is a function called for various events during
+       code execution (this is used by debuggers). Normally an event is
+       triggered for each new source line (see :attr:`~frame.f_trace_lines`).
+
+   * - .. attribute:: frame.f_trace_lines
+     - Set this attribute to :const:`False` to disable triggering a tracing
+       event for each source line.
+
+   * - .. attribute:: frame.f_trace_opcodes
+     - Set this attribute to :const:`True` to allow per-opcode events to be
+       requested. Note that this may lead to
+       undefined interpreter behaviour if exceptions raised by the trace
+       function escape to the function being traced.
+
+   * - .. attribute:: frame.f_lineno
+     - The current line number of the frame -- writing to this
+       from within a trace function jumps to the given line (only for the bottom-most
+       frame).  A debugger can implement a Jump command (aka Set Next Statement)
+       by writing to this attribute.
+
+Frame object methods
+~~~~~~~~~~~~~~~~~~~~
+
+Frame objects support one method:
+
+.. method:: frame.clear()
+
+   This method clears all references to :ref:`local variables <naming>` held by the
+   frame.  Also, if the frame belonged to a :term:`generator`, the generator
+   is finalized.  This helps break reference cycles involving frame
+   objects (for example when catching an :ref:`exception <bltin-exceptions>`
+   and storing its :ref:`traceback <traceback-objects>` for later use).
+
+   :exc:`RuntimeError` is raised if the frame is currently executing
+   or suspended.
+
+   .. versionadded:: 3.4
+
+   .. versionchanged:: 3.13
+      Attempting to clear a suspended frame raises :exc:`RuntimeError`
+      (as has always been the case for executing frames).
+
+
+.. _traceback-objects:
+
+Traceback objects
+^^^^^^^^^^^^^^^^^
+
+.. index::
+   pair: object; traceback
+   pair: stack; trace
+   pair: exception; handler
+   pair: execution; stack
+   single: exc_info (in module sys)
+   single: last_traceback (in module sys)
+   single: sys.exc_info
+   single: sys.exception
+   single: sys.last_traceback
+
+Traceback objects represent a stack trace of an exception.  A traceback object
+is implicitly created when an exception occurs, and may also be explicitly
+created by calling :class:`types.TracebackType`.
+
+For implicitly created tracebacks, when the search for an exception handler
+unwinds the execution stack, at each unwound level a traceback object is
+inserted in front of the current traceback.  When an exception handler is
+entered, the stack trace is made available to the program. (See section
+:ref:`try`.) It is accessible as the third item of the
+tuple returned by ``sys.exc_info()``, and as the ``__traceback__`` attribute
+of the caught exception.
+
+When the program contains no suitable
+handler, the stack trace is written (nicely formatted) to the standard error
+stream; if the interpreter is interactive, it is also made available to the user
+as ``sys.last_traceback``.
+
+For explicitly created tracebacks, it is up to the creator of the traceback
+to determine how the ``tb_next`` attributes should be linked to form a
+full stack trace.
+
+.. index::
+   single: tb_frame (traceback attribute)
+   single: tb_lineno (traceback attribute)
+   single: tb_lasti (traceback attribute)
+   pair: statement; try
+
+Special read-only attributes:
+:attr:`tb_frame` points to the execution frame of the current level;
+:attr:`tb_lineno` gives the line number where the exception occurred;
+:attr:`tb_lasti` indicates the precise instruction.
+The line number and last instruction in the traceback may differ from the
+line number of its frame object if the exception occurred in a
+:keyword:`try` statement with no matching except clause or with a
+finally clause.
+
+Accessing ``tb_frame`` raises an :ref:`auditing event <auditing>`
+``object.__getattr__`` with arguments ``obj`` and ``"tb_frame"``.
+
+.. index::
+   single: tb_next (traceback attribute)
+
+Special writable attribute: :attr:`tb_next` is the next level in the stack
+trace (towards the frame where the exception occurred), or ``None`` if
+there is no next level.
+
+.. versionchanged:: 3.7
+   Traceback objects can now be explicitly instantiated from Python code,
+   and the ``tb_next`` attribute of existing instances can be updated.
+
+
+Slice objects
+^^^^^^^^^^^^^
+
+.. index:: pair: built-in function; slice
+
+Slice objects are used to represent slices for
+:meth:`~object.__getitem__`
+methods.  They are also created by the built-in :func:`slice` function.
+
+.. index::
+   single: start (slice object attribute)
+   single: stop (slice object attribute)
+   single: step (slice object attribute)
+
+Special read-only attributes: :attr:`~slice.start` is the lower bound;
+:attr:`~slice.stop` is the upper bound; :attr:`~slice.step` is the step
+value; each is ``None`` if omitted.  These attributes can have any type.
+
+Slice objects support one method:
+
+.. method:: slice.indices(self, length)
+
+   This method takes a single integer argument *length* and computes
+   information about the slice that the slice object would describe if
+   applied to a sequence of *length* items.  It returns a tuple of three
+   integers; respectively these are the *start* and *stop* indices and the
+   *step* or stride length of the slice. Missing or out-of-bounds indices
+   are handled in a manner consistent with regular slices.
+
+
+Static method objects
+^^^^^^^^^^^^^^^^^^^^^
+
+Static method objects provide a way of defeating the transformation of function
+objects to method objects described above. A static method object is a wrapper
+around any other object, usually a user-defined method object. When a static
+method object is retrieved from a class or a class instance, the object actually
+returned is the wrapped object, which is not subject to any further
+transformation. Static method objects are also callable. Static method
+objects are created by the built-in :func:`staticmethod` constructor.
+
+
+Class method objects
+^^^^^^^^^^^^^^^^^^^^
+
+A class method object, like a static method object, is a wrapper around another
+object that alters the way in which that object is retrieved from classes and
+class instances. The behaviour of class method objects upon such retrieval is
+described above, under "User-defined methods". Class method objects are created
+by the built-in :func:`classmethod` constructor.
 
 
 .. _specialnames:
@@ -1582,9 +1822,9 @@ Basic customization
 
    Called to implement truth value testing and the built-in operation
    ``bool()``; should return ``False`` or ``True``.  When this method is not
-   defined, :meth:`__len__` is called, if it is defined, and the object is
+   defined, :meth:`~object.__len__` is called, if it is defined, and the object is
    considered true if its result is nonzero.  If a class defines neither
-   :meth:`__len__` nor :meth:`__bool__`, all its instances are considered
+   :meth:`!__len__` nor :meth:`!__bool__`, all its instances are considered
    true.
 
 
@@ -1613,7 +1853,7 @@ access (use of, assignment to, or deletion of ``x.name``) for class instances.
    :meth:`__getattr__` and :meth:`__setattr__`.) This is done both for efficiency
    reasons and because otherwise :meth:`__getattr__` would have no way to access
    other attributes of the instance.  Note that at least for instance variables,
-   you can fake total control by not inserting any values in the instance attribute
+   you can take total control by not inserting any values in the instance attribute
    dictionary (but instead inserting them in another object).  See the
    :meth:`__getattribute__` method below for a way to actually get total control
    over attribute access.
@@ -1778,13 +2018,17 @@ class' :attr:`~object.__dict__`.
 
    Called to delete the attribute on an instance *instance* of the owner class.
 
+Instances of descriptors may also have the :attr:`!__objclass__` attribute
+present:
+
+.. attribute:: object.__objclass__
 
-The attribute :attr:`__objclass__` is interpreted by the :mod:`inspect` module
-as specifying the class where this object was defined (setting this
-appropriately can assist in runtime introspection of dynamic class attributes).
-For callables, it may indicate that an instance of the given type (or a
-subclass) is expected or required as the first positional argument (for example,
-CPython sets this attribute for unbound methods that are implemented in C).
+   The attribute :attr:`!__objclass__` is interpreted by the :mod:`inspect` module
+   as specifying the class where this object was defined (setting this
+   appropriately can assist in runtime introspection of dynamic class attributes).
+   For callables, it may indicate that an instance of the given type (or a
+   subclass) is expected or required as the first positional argument (for example,
+   CPython sets this attribute for unbound methods that are implemented in C).
 
 
 .. _descriptor-invocation:
@@ -1865,13 +2109,14 @@ For instance bindings, the precedence of descriptor invocation depends on
 which descriptor methods are defined.  A descriptor can define any combination
 of :meth:`~object.__get__`, :meth:`~object.__set__` and
 :meth:`~object.__delete__`.  If it does not
-define :meth:`__get__`, then accessing the attribute will return the descriptor
+define :meth:`!__get__`, then accessing the attribute will return the descriptor
 object itself unless there is a value in the object's instance dictionary.  If
-the descriptor defines :meth:`__set__` and/or :meth:`__delete__`, it is a data
+the descriptor defines :meth:`!__set__` and/or :meth:`!__delete__`, it is a data
 descriptor; if it defines neither, it is a non-data descriptor.  Normally, data
-descriptors define both :meth:`__get__` and :meth:`__set__`, while non-data
-descriptors have just the :meth:`__get__` method.  Data descriptors with
-:meth:`__get__` and :meth:`__set__` (and/or :meth:`__delete__`) defined always override a redefinition in an
+descriptors define both :meth:`!__get__` and :meth:`!__set__`, while non-data
+descriptors have just the :meth:`!__get__` method.  Data descriptors with
+:meth:`!__get__` and :meth:`!__set__` (and/or :meth:`!__delete__`) defined
+always override a redefinition in an
 instance dictionary.  In contrast, non-data descriptors can be overridden by
 instances.
 
@@ -1908,8 +2153,7 @@ Attribute lookup speed can be significantly improved as well.
 
 .. _datamodel-note-slots:
 
-Notes on using *__slots__*
-""""""""""""""""""""""""""
+Notes on using *__slots__*:
 
 * When inheriting from a class without *__slots__*, the
   :attr:`~object.__dict__` and
@@ -2449,16 +2693,17 @@ either to emulate a sequence or to emulate a mapping; the difference is that for
 a sequence, the allowable keys should be the integers *k* for which ``0 <= k <
 N`` where *N* is the length of the sequence, or :class:`slice` objects, which define a
 range of items.  It is also recommended that mappings provide the methods
-:meth:`keys`, :meth:`values`, :meth:`items`, :meth:`get`, :meth:`clear`,
-:meth:`setdefault`, :meth:`pop`, :meth:`popitem`, :meth:`!copy`, and
-:meth:`update` behaving similar to those for Python's standard :class:`dictionary <dict>`
+:meth:`!keys`, :meth:`!values`, :meth:`!items`, :meth:`!get`, :meth:`!clear`,
+:meth:`!setdefault`, :meth:`!pop`, :meth:`!popitem`, :meth:`!copy`, and
+:meth:`!update` behaving similar to those for Python's standard :class:`dictionary <dict>`
 objects.  The :mod:`collections.abc` module provides a
 :class:`~collections.abc.MutableMapping`
 :term:`abstract base class` to help create those methods from a base set of
-:meth:`~object.__getitem__`, :meth:`~object.__setitem__`, :meth:`~object.__delitem__`, and :meth:`keys`.
-Mutable sequences should provide methods :meth:`append`, :meth:`count`,
-:meth:`index`, :meth:`extend`, :meth:`insert`, :meth:`pop`, :meth:`remove`,
-:meth:`reverse` and :meth:`sort`, like Python standard :class:`list`
+:meth:`~object.__getitem__`, :meth:`~object.__setitem__`,
+:meth:`~object.__delitem__`, and :meth:`!keys`.
+Mutable sequences should provide methods :meth:`!append`, :meth:`!count`,
+:meth:`!index`, :meth:`!extend`, :meth:`!insert`, :meth:`!pop`, :meth:`!remove`,
+:meth:`!reverse` and :meth:`!sort`, like Python standard :class:`list`
 objects. Finally,
 sequence types should implement addition (meaning concatenation) and
 multiplication (meaning repetition) by defining the methods
@@ -2471,7 +2716,7 @@ operator; for
 mappings, ``in`` should search the mapping's keys; for sequences, it should
 search through the values.  It is further recommended that both mappings and
 sequences implement the :meth:`~object.__iter__` method to allow efficient iteration
-through the container; for mappings, :meth:`__iter__` should iterate
+through the container; for mappings, :meth:`!__iter__` should iterate
 through the object's keys; for sequences, it should iterate through the values.
 
 .. method:: object.__len__(self)
@@ -2482,16 +2727,16 @@ through the object's keys; for sequences, it should iterate through the values.
 
    Called to implement the built-in function :func:`len`.  Should return the length
    of the object, an integer ``>=`` 0.  Also, an object that doesn't define a
-   :meth:`__bool__` method and whose :meth:`__len__` method returns zero is
+   :meth:`~object.__bool__` method and whose :meth:`!__len__` method returns zero is
    considered to be false in a Boolean context.
 
    .. impl-detail::
 
-      In CPython, the length is required to be at most :attr:`sys.maxsize`.
-      If the length is larger than :attr:`!sys.maxsize` some features (such as
+      In CPython, the length is required to be at most :data:`sys.maxsize`.
+      If the length is larger than :data:`!sys.maxsize` some features (such as
       :func:`len`) may raise :exc:`OverflowError`.  To prevent raising
       :exc:`!OverflowError` by truth value testing, an object must define a
-      :meth:`__bool__` method.
+      :meth:`~object.__bool__` method.
 
 
 .. method:: object.__length_hint__(self)
@@ -2822,7 +3067,7 @@ For more information on context managers, see :ref:`typecontextmanager`.
    (i.e., prevent it from being propagated), it should return a true value.
    Otherwise, the exception will be processed normally upon exit from this method.
 
-   Note that :meth:`__exit__` methods should not reraise the passed-in exception;
+   Note that :meth:`~object.__exit__` methods should not reraise the passed-in exception;
    this is the caller's responsibility.
 
 
@@ -3050,7 +3295,7 @@ generators, coroutines do not directly support iteration.
    to the :meth:`~generator.send` method of the iterator that caused
    the coroutine to suspend.  The result (return value,
    :exc:`StopIteration`, or other exception) is the same as when
-   iterating over the :meth:`__await__` return value, described above.
+   iterating over the :meth:`!__await__` return value, described above.
 
 .. method:: coroutine.throw(value)
             coroutine.throw(type[, value[, traceback]])
@@ -3140,12 +3385,12 @@ Asynchronous context managers can be used in an :keyword:`async with` statement.
 
 .. method:: object.__aenter__(self)
 
-   Semantically similar to :meth:`__enter__`, the only
+   Semantically similar to :meth:`~object.__enter__`, the only
    difference being that it must return an *awaitable*.
 
 .. method:: object.__aexit__(self, exc_type, exc_value, traceback)
 
-   Semantically similar to :meth:`__exit__`, the only
+   Semantically similar to :meth:`~object.__exit__`, the only
    difference being that it must return an *awaitable*.
 
 An example of an asynchronous context manager class::
@@ -3167,8 +3412,9 @@ An example of an asynchronous context manager class::
    lead to some very strange behaviour if it is handled incorrectly.
 
 .. [#] The :meth:`~object.__hash__`, :meth:`~object.__iter__`,
-   :meth:`~object.__reversed__`, and :meth:`~object.__contains__` methods have
-   special handling for this; others
+   :meth:`~object.__reversed__`, :meth:`~object.__contains__`,
+   :meth:`~object.__class_getitem__` and :meth:`~os.PathLike.__fspath__`
+   methods have special handling for this. Others
    will still raise a :exc:`TypeError`, but may do so by relying on
    the behavior that ``None`` is not callable.
 
diff --git a/Doc/reference/executionmodel.rst b/Doc/reference/executionmodel.rst
index 8917243999d399..cea3a56ba51644 100644
--- a/Doc/reference/executionmodel.rst
+++ b/Doc/reference/executionmodel.rst
@@ -71,6 +71,8 @@ The following constructs bind names:
   + in a capture pattern in structural pattern matching
 
 * :keyword:`import` statements.
+* :keyword:`type` statements.
+* :ref:`type parameter lists <type-params>`.
 
 The :keyword:`!import` statement of the form ``from ... import *`` binds all
 names defined in the imported module, except those beginning with an underscore.
@@ -149,7 +151,8 @@ a global statement, the free variable is treated as a global.
 The :keyword:`nonlocal` statement causes corresponding names to refer
 to previously bound variables in the nearest enclosing function scope.
 :exc:`SyntaxError` is raised at compile time if the given name does not
-exist in any enclosing function scope.
+exist in any enclosing function scope. :ref:`Type parameters <type-params>`
+cannot be rebound with the :keyword:`!nonlocal` statement.
 
 .. index:: pair: module; __main__
 
@@ -163,14 +166,119 @@ These references follow the normal rules for name resolution with an exception
 that unbound local variables are looked up in the global namespace.
 The namespace of the class definition becomes the attribute dictionary of
 the class. The scope of names defined in a class block is limited to the
-class block; it does not extend to the code blocks of methods -- this includes
-comprehensions and generator expressions since they are implemented using a
-function scope.  This means that the following will fail::
+class block; it does not extend to the code blocks of methods. This includes
+comprehensions and generator expressions, but it does not include
+:ref:`annotation scopes <annotation-scopes>`,
+which have access to their enclosing class scopes.
+This means that the following will fail::
 
    class A:
        a = 42
        b = list(a + i for i in range(10))
 
+However, the following will succeed::
+
+   class A:
+       type Alias = Nested
+       class Nested: pass
+
+   print(A.Alias.__value__)  # <type 'A.Nested'>
+
+.. _annotation-scopes:
+
+Annotation scopes
+-----------------
+
+:ref:`Type parameter lists <type-params>` and :keyword:`type` statements
+introduce *annotation scopes*, which behave mostly like function scopes,
+but with some exceptions discussed below. :term:`Annotations <annotation>`
+currently do not use annotation scopes, but they are expected to use
+annotation scopes in Python 3.13 when :pep:`649` is implemented.
+
+Annotation scopes are used in the following contexts:
+
+* Type parameter lists for :ref:`generic type aliases <generic-type-aliases>`.
+* Type parameter lists for :ref:`generic functions <generic-functions>`.
+  A generic function's annotations are
+  executed within the annotation scope, but its defaults and decorators are not.
+* Type parameter lists for :ref:`generic classes <generic-classes>`.
+  A generic class's base classes and
+  keyword arguments are executed within the annotation scope, but its decorators are not.
+* The bounds and constraints for type variables
+  (:ref:`lazily evaluated <lazy-evaluation>`).
+* The value of type aliases (:ref:`lazily evaluated <lazy-evaluation>`).
+
+Annotation scopes differ from function scopes in the following ways:
+
+* Annotation scopes have access to their enclosing class namespace.
+  If an annotation scope is immediately within a class scope, or within another
+  annotation scope that is immediately within a class scope, the code in the
+  annotation scope can use names defined in the class scope as if it were
+  executed directly within the class body. This contrasts with regular
+  functions defined within classes, which cannot access names defined in the class scope.
+* Expressions in annotation scopes cannot contain :keyword:`yield`, ``yield from``,
+  :keyword:`await`, or :token:`:= <python-grammar:assignment_expression>`
+  expressions. (These expressions are allowed in other scopes contained within the
+  annotation scope.)
+* Names defined in annotation scopes cannot be rebound with :keyword:`nonlocal`
+  statements in inner scopes. This includes only type parameters, as no other
+  syntactic elements that can appear within annotation scopes can introduce new names.
+* While annotation scopes have an internal name, that name is not reflected in the
+  :term:`__qualname__ <qualified name>` of objects defined within the scope.
+  Instead, the :attr:`!__qualname__`
+  of such objects is as if the object were defined in the enclosing scope.
+
+.. versionadded:: 3.12
+   Annotation scopes were introduced in Python 3.12 as part of :pep:`695`.
+
+.. _lazy-evaluation:
+
+Lazy evaluation
+---------------
+
+The values of type aliases created through the :keyword:`type` statement are
+*lazily evaluated*. The same applies to the bounds and constraints of type
+variables created through the :ref:`type parameter syntax <type-params>`.
+This means that they are not evaluated when the type alias or type variable is
+created. Instead, they are only evaluated when doing so is necessary to resolve
+an attribute access.
+
+Example:
+
+.. doctest::
+
+   >>> type Alias = 1/0
+   >>> Alias.__value__
+   Traceback (most recent call last):
+     ...
+   ZeroDivisionError: division by zero
+   >>> def func[T: 1/0](): pass
+   >>> T = func.__type_params__[0]
+   >>> T.__bound__
+   Traceback (most recent call last):
+     ...
+   ZeroDivisionError: division by zero
+
+Here the exception is raised only when the ``__value__`` attribute
+of the type alias or the ``__bound__`` attribute of the type variable
+is accessed.
+
+This behavior is primarily useful for references to types that have not
+yet been defined when the type alias or type variable is created. For example,
+lazy evaluation enables creation of mutually recursive type aliases::
+
+   from typing import Literal
+
+   type SimpleExpr = int | Parenthesized
+   type Parenthesized = tuple[Literal["("], Expr, Literal[")"]]
+   type Expr = SimpleExpr | tuple[SimpleExpr, Literal["+", "-"], Expr]
+
+Lazily evaluated values are evaluated in :ref:`annotation scope <annotation-scopes>`,
+which means that names that appear inside the lazily evaluated value are looked up
+as if they were used in the immediately enclosing scope.
+
+.. versionadded:: 3.12
+
 .. _restrict_exec:
 
 Builtins and restricted execution
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index b97a08f25d92a2..3f6d5bfafee9d1 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -298,27 +298,27 @@ Dictionary displays
 .. index::
    pair: dictionary; display
    pair: dictionary; comprehensions
-   key, datum, key/datum pair
+   key, value, key/value pair
    pair: object; dictionary
    single: {} (curly brackets); dictionary expression
    single: : (colon); in dictionary expressions
    single: , (comma); in dictionary displays
 
-A dictionary display is a possibly empty series of key/datum pairs enclosed in
-curly braces:
+A dictionary display is a possibly empty series of dict items (key/value pairs)
+enclosed in curly braces:
 
 .. productionlist:: python-grammar
-   dict_display: "{" [`key_datum_list` | `dict_comprehension`] "}"
-   key_datum_list: `key_datum` ("," `key_datum`)* [","]
-   key_datum: `expression` ":" `expression` | "**" `or_expr`
+   dict_display: "{" [`dict_item_list` | `dict_comprehension`] "}"
+   dict_item_list: `dict_item` ("," `dict_item`)* [","]
+   dict_item: `expression` ":" `expression` | "**" `or_expr`
    dict_comprehension: `expression` ":" `expression` `comp_for`
 
 A dictionary display yields a new dictionary object.
 
-If a comma-separated sequence of key/datum pairs is given, they are evaluated
+If a comma-separated sequence of dict items is given, they are evaluated
 from left to right to define the entries of the dictionary: each key object is
-used as a key into the dictionary to store the corresponding datum.  This means
-that you can specify the same key multiple times in the key/datum list, and the
+used as a key into the dictionary to store the corresponding value.  This means
+that you can specify the same key multiple times in the dict item list, and the
 final dictionary's value for that key will be the last one given.
 
 .. index::
@@ -328,7 +328,7 @@ final dictionary's value for that key will be the last one given.
 A double asterisk ``**`` denotes :dfn:`dictionary unpacking`.
 Its operand must be a :term:`mapping`.  Each mapping item is added
 to the new dictionary.  Later values replace values already set by
-earlier key/datum pairs and earlier dictionary unpackings.
+earlier dict items and earlier dictionary unpackings.
 
 .. versionadded:: 3.5
    Unpacking into dictionary displays, originally proposed by :pep:`448`.
@@ -344,7 +344,7 @@ in the new dictionary in the order they are produced.
 Restrictions on the types of the key values are listed earlier in section
 :ref:`types`.  (To summarize, the key type should be :term:`hashable`, which excludes
 all mutable objects.)  Clashes between duplicate keys are not detected; the last
-datum (textually rightmost in the display) stored for a given key value
+value (textually rightmost in the display) stored for a given key value
 prevails.
 
 .. versionchanged:: 3.8
@@ -499,8 +499,8 @@ the yield expression. It can be either set explicitly when raising
 :exc:`StopIteration`, or automatically when the subiterator is a generator
 (by returning a value from the subgenerator).
 
-   .. versionchanged:: 3.3
-      Added ``yield from <expr>`` to delegate control flow to a subiterator.
+.. versionchanged:: 3.3
+   Added ``yield from <expr>`` to delegate control flow to a subiterator.
 
 The parentheses may be omitted when the yield expression is the sole expression
 on the right hand side of an assignment statement.
@@ -595,12 +595,19 @@ is already executing raises a :exc:`ValueError` exception.
 .. method:: generator.close()
 
    Raises a :exc:`GeneratorExit` at the point where the generator function was
-   paused.  If the generator function then exits gracefully, is already closed,
-   or raises :exc:`GeneratorExit` (by not catching the exception), close
-   returns to its caller.  If the generator yields a value, a
-   :exc:`RuntimeError` is raised.  If the generator raises any other exception,
-   it is propagated to the caller.  :meth:`close` does nothing if the generator
-   has already exited due to an exception or normal exit.
+   paused.  If the generator function catches the exception and returns a
+   value, this value is returned from :meth:`close`.  If the generator function
+   is already closed, or raises :exc:`GeneratorExit` (by not catching the
+   exception), :meth:`close` returns :const:`None`.  If the generator yields a
+   value, a :exc:`RuntimeError` is raised.  If the generator raises any other
+   exception, it is propagated to the caller.  If the generator has already
+   exited due to an exception or normal exit, :meth:`close` returns
+   :const:`None` and has no other effect.
+
+   .. versionchanged:: 3.13
+
+      If a generator returns a value upon being closed, the value is returned
+      by :meth:`close`.
 
 .. index:: single: yield; examples
 
@@ -816,12 +823,18 @@ An attribute reference is a primary followed by a period and a name:
 
 The primary must evaluate to an object of a type that supports attribute
 references, which most objects do.  This object is then asked to produce the
-attribute whose name is the identifier.  This production can be customized by
-overriding the :meth:`__getattr__` method.  If this attribute is not available,
-the exception :exc:`AttributeError` is raised.  Otherwise, the type and value of
-the object produced is determined by the object.  Multiple evaluations of the
-same attribute reference may yield different objects.
+attribute whose name is the identifier. The type and value produced is
+determined by the object.  Multiple evaluations of the same attribute
+reference may yield different objects.
+
+This production can be customized by overriding the
+:meth:`~object.__getattribute__` method or the :meth:`~object.__getattr__`
+method.  The :meth:`!__getattribute__` method is called first and either
+returns a value or raises :exc:`AttributeError` if the attribute is not
+available.
 
+If an :exc:`AttributeError` is raised and the object has a :meth:`!__getattr__`
+method, that method is called as a fallback.
 
 .. _subscriptions:
 
@@ -882,7 +895,7 @@ to the index so that, for example, ``x[-1]`` selects the last item of ``x``. The
 resulting value must be a nonnegative integer less than the number of items in
 the sequence, and the subscription selects the item whose index is that value
 (counting from zero). Since the support for negative indices and slicing
-occurs in the object's :meth:`__getitem__` method, subclasses overriding
+occurs in the object's :meth:`~object.__getitem__` method, subclasses overriding
 this method will need to explicitly add that support.
 
 .. index::
@@ -937,7 +950,7 @@ slice list contains no proper slice).
    single: step (slice object attribute)
 
 The semantics for a slicing are as follows.  The primary is indexed (using the
-same :meth:`__getitem__` method as
+same :meth:`~object.__getitem__` method as
 normal subscription) with a key that is constructed from the slice list, as
 follows.  If the slice list contains at least one comma, the key is a tuple
 containing the conversion of the slice items; otherwise, the conversion of the
@@ -1663,7 +1676,7 @@ If an exception is raised during the iteration, it is as if :keyword:`in` raised
 that exception.
 
 Lastly, the old-style iteration protocol is tried: if a class defines
-:meth:`__getitem__`, ``x in y`` is ``True`` if and only if there is a non-negative
+:meth:`~object.__getitem__`, ``x in y`` is ``True`` if and only if there is a non-negative
 integer index *i* such that ``x is y[i] or x == y[i]``, and no lower integer index
 raises the :exc:`IndexError` exception.  (If any other exception is raised, it is as
 if :keyword:`in` raised that exception).
@@ -1717,7 +1730,7 @@ control flow statements, the following values are interpreted as false:
 ``False``, ``None``, numeric zero of all types, and empty strings and containers
 (including strings, tuples, lists, dictionaries, sets and frozensets).  All
 other values are interpreted as true.  User-defined objects can customize their
-truth value by providing a :meth:`__bool__` method.
+truth value by providing a :meth:`~object.__bool__` method.
 
 .. index:: pair: operator; not
 
@@ -1774,10 +1787,11 @@ Or, when processing a file stream in chunks:
    while chunk := file.read(9000):
        process(chunk)
 
-Assignment expressions must be surrounded by parentheses when used
-as sub-expressions in slicing, conditional, lambda,
-keyword-argument, and comprehension-if expressions
-and in ``assert`` and ``with`` statements.
+Assignment expressions must be surrounded by parentheses when
+used as expression statements and when used as sub-expressions in
+slicing, conditional, lambda,
+keyword-argument, and comprehension-if expressions and
+in ``assert``, ``with``, and ``assignment`` statements.
 In all other places where they can be used, parentheses are not required,
 including in ``if`` and ``while`` statements.
 
diff --git a/Doc/reference/import.rst b/Doc/reference/import.rst
index 0f416a5c583f85..a7beeea29b4556 100644
--- a/Doc/reference/import.rst
+++ b/Doc/reference/import.rst
@@ -375,32 +375,32 @@ of what happens during the loading portion of import::
 
 Note the following details:
 
- * If there is an existing module object with the given name in
-   :data:`sys.modules`, import will have already returned it.
+* If there is an existing module object with the given name in
+  :data:`sys.modules`, import will have already returned it.
 
- * The module will exist in :data:`sys.modules` before the loader
-   executes the module code.  This is crucial because the module code may
-   (directly or indirectly) import itself; adding it to :data:`sys.modules`
-   beforehand prevents unbounded recursion in the worst case and multiple
-   loading in the best.
+* The module will exist in :data:`sys.modules` before the loader
+  executes the module code.  This is crucial because the module code may
+  (directly or indirectly) import itself; adding it to :data:`sys.modules`
+  beforehand prevents unbounded recursion in the worst case and multiple
+  loading in the best.
 
- * If loading fails, the failing module -- and only the failing module --
-   gets removed from :data:`sys.modules`.  Any module already in the
-   :data:`sys.modules` cache, and any module that was successfully loaded
-   as a side-effect, must remain in the cache.  This contrasts with
-   reloading where even the failing module is left in :data:`sys.modules`.
+* If loading fails, the failing module -- and only the failing module --
+  gets removed from :data:`sys.modules`.  Any module already in the
+  :data:`sys.modules` cache, and any module that was successfully loaded
+  as a side-effect, must remain in the cache.  This contrasts with
+  reloading where even the failing module is left in :data:`sys.modules`.
 
- * After the module is created but before execution, the import machinery
-   sets the import-related module attributes ("_init_module_attrs" in
-   the pseudo-code example above), as summarized in a
-   :ref:`later section <import-mod-attrs>`.
+* After the module is created but before execution, the import machinery
+  sets the import-related module attributes ("_init_module_attrs" in
+  the pseudo-code example above), as summarized in a
+  :ref:`later section <import-mod-attrs>`.
 
- * Module execution is the key moment of loading in which the module's
-   namespace gets populated.  Execution is entirely delegated to the
-   loader, which gets to decide what gets populated and how.
+* Module execution is the key moment of loading in which the module's
+  namespace gets populated.  Execution is entirely delegated to the
+  loader, which gets to decide what gets populated and how.
 
- * The module created during loading and passed to exec_module() may
-   not be the one returned at the end of import [#fnlo]_.
+* The module created during loading and passed to exec_module() may
+  not be the one returned at the end of import [#fnlo]_.
 
 .. versionchanged:: 3.4
    The import system has taken over the boilerplate responsibilities of
@@ -417,13 +417,13 @@ returned from :meth:`~importlib.abc.Loader.exec_module` is ignored.
 
 Loaders must satisfy the following requirements:
 
- * If the module is a Python module (as opposed to a built-in module or a
-   dynamically loaded extension), the loader should execute the module's code
-   in the module's global name space (``module.__dict__``).
+* If the module is a Python module (as opposed to a built-in module or a
+  dynamically loaded extension), the loader should execute the module's code
+  in the module's global name space (``module.__dict__``).
 
- * If the loader cannot execute the module, it should raise an
-   :exc:`ImportError`, although any other exception raised during
-   :meth:`~importlib.abc.Loader.exec_module` will be propagated.
+* If the loader cannot execute the module, it should raise an
+  :exc:`ImportError`, although any other exception raised during
+  :meth:`~importlib.abc.Loader.exec_module` will be propagated.
 
 In many cases, the finder and loader can be the same object; in such cases the
 :meth:`~importlib.abc.MetaPathFinder.find_spec` method would just return a
@@ -453,20 +453,20 @@ import machinery will create the new module itself.
    functionality described above in addition to executing the module.  All
    the same constraints apply, with some additional clarification:
 
-    * If there is an existing module object with the given name in
-      :data:`sys.modules`, the loader must use that existing module.
-      (Otherwise, :func:`importlib.reload` will not work correctly.)  If the
-      named module does not exist in :data:`sys.modules`, the loader
-      must create a new module object and add it to :data:`sys.modules`.
+   * If there is an existing module object with the given name in
+     :data:`sys.modules`, the loader must use that existing module.
+     (Otherwise, :func:`importlib.reload` will not work correctly.)  If the
+     named module does not exist in :data:`sys.modules`, the loader
+     must create a new module object and add it to :data:`sys.modules`.
 
-    * The module *must* exist in :data:`sys.modules` before the loader
-      executes the module code, to prevent unbounded recursion or multiple
-      loading.
+   * The module *must* exist in :data:`sys.modules` before the loader
+     executes the module code, to prevent unbounded recursion or multiple
+     loading.
 
-    * If loading fails, the loader must remove any modules it has inserted
-      into :data:`sys.modules`, but it must remove **only** the failing
-      module(s), and only if the loader itself has loaded the module(s)
-      explicitly.
+   * If loading fails, the loader must remove any modules it has inserted
+     into :data:`sys.modules`, but it must remove **only** the failing
+     module(s), and only if the loader itself has loaded the module(s)
+     explicitly.
 
 .. versionchanged:: 3.5
    A :exc:`DeprecationWarning` is raised when ``exec_module()`` is defined but
@@ -559,7 +559,7 @@ listed below.
    functionality, for example getting data associated with a loader.
 
    It is **strongly** recommended that you rely on :attr:`__spec__`
-   instead instead of this attribute.
+   instead of this attribute.
 
    .. versionchanged:: 3.12
       The value of ``__loader__`` is expected to be the same as
@@ -580,7 +580,7 @@ listed below.
    relative imports for main modules, as defined in :pep:`366`.
 
    It is **strongly** recommended that you rely on :attr:`__spec__`
-   instead instead of this attribute.
+   instead of this attribute.
 
    .. versionchanged:: 3.6
       The value of ``__package__`` is expected to be the same as
@@ -650,7 +650,7 @@ listed below.
    from a file, that atypical scenario may be appropriate.
 
    It is **strongly** recommended that you rely on :attr:`__spec__`
-   instead instead of ``__cached__``.
+   instead of ``__cached__``.
 
 .. _package-path-rules:
 
@@ -693,17 +693,17 @@ with defaults for whatever information is missing.
 
 Here are the exact rules used:
 
- * If the module has a ``__spec__`` attribute, the information in the spec
-   is used to generate the repr.  The "name", "loader", "origin", and
-   "has_location" attributes are consulted.
+* If the module has a ``__spec__`` attribute, the information in the spec
+  is used to generate the repr.  The "name", "loader", "origin", and
+  "has_location" attributes are consulted.
 
- * If the module has a ``__file__`` attribute, this is used as part of the
-   module's repr.
+* If the module has a ``__file__`` attribute, this is used as part of the
+  module's repr.
 
- * If the module has no ``__file__`` but does have a ``__loader__`` that is not
-   ``None``, then the loader's repr is used as part of the module's repr.
+* If the module has no ``__file__`` but does have a ``__loader__`` that is not
+  ``None``, then the loader's repr is used as part of the module's repr.
 
- * Otherwise, just use the module's ``__name__`` in the repr.
+* Otherwise, just use the module's ``__name__`` in the repr.
 
 .. versionchanged:: 3.12
    Use of :meth:`!module_repr`, having been deprecated since Python 3.4, was
diff --git a/Doc/reference/introduction.rst b/Doc/reference/introduction.rst
index 81f0a5c5d43883..cf186705e6e987 100644
--- a/Doc/reference/introduction.rst
+++ b/Doc/reference/introduction.rst
@@ -90,7 +90,8 @@ Notation
 
 .. index:: BNF, grammar, syntax, notation
 
-The descriptions of lexical analysis and syntax use a modified BNF grammar
+The descriptions of lexical analysis and syntax use a modified
+`Backus–Naur form (BNF) <https://en.wikipedia.org/wiki/Backus%E2%80%93Naur_form>`_ grammar
 notation.  This uses the following style of definition:
 
 .. productionlist:: notation
diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst
index 8adb4b740825d0..3e07d16068a627 100644
--- a/Doc/reference/lexical_analysis.rst
+++ b/Doc/reference/lexical_analysis.rst
@@ -315,7 +315,7 @@ The Unicode category codes mentioned above stand for:
 * *Nd* - decimal numbers
 * *Pc* - connector punctuations
 * *Other_ID_Start* - explicit list of characters in `PropList.txt
-  <https://www.unicode.org/Public/15.0.0/ucd/PropList.txt>`_ to support backwards
+  <https://www.unicode.org/Public/15.1.0/ucd/PropList.txt>`_ to support backwards
   compatibility
 * *Other_ID_Continue* - likewise
 
@@ -323,8 +323,8 @@ All identifiers are converted into the normal form NFKC while parsing; compariso
 of identifiers is based on NFKC.
 
 A non-normative HTML file listing all valid identifier characters for Unicode
-15.0.0 can be found at
-https://www.unicode.org/Public/15.0.0/ucd/DerivedCoreProperties.txt
+15.1.0 can be found at
+https://www.unicode.org/Public/15.1.0/ucd/DerivedCoreProperties.txt
 
 
 .. _keywords:
@@ -361,15 +361,19 @@ Soft Keywords
 .. versionadded:: 3.10
 
 Some identifiers are only reserved under specific contexts. These are known as
-*soft keywords*.  The identifiers ``match``, ``case`` and ``_`` can
-syntactically act as keywords in contexts related to the pattern matching
-statement, but this distinction is done at the parser level, not when
-tokenizing.
+*soft keywords*.  The identifiers ``match``, ``case``, ``type`` and ``_`` can
+syntactically act as keywords in certain contexts,
+but this distinction is done at the parser level, not when tokenizing.
 
-As soft keywords, their use with pattern matching is possible while still
-preserving compatibility with existing code that uses ``match``, ``case`` and ``_`` as
+As soft keywords, their use in the grammar is possible while still
+preserving compatibility with existing code that uses these names as
 identifier names.
 
+``match``, ``case``, and ``_`` are used in the :keyword:`match` statement.
+``type`` is used in the :keyword:`type` statement.
+
+.. versionchanged:: 3.12
+   ``type`` is now a soft keyword.
 
 .. index::
    single: _, identifiers
@@ -545,55 +549,59 @@ retained), except that three unescaped quotes in a row terminate the literal.  (
 
 .. _escape-sequences:
 
+
+Escape sequences
+^^^^^^^^^^^^^^^^
+
 Unless an ``'r'`` or ``'R'`` prefix is present, escape sequences in string and
 bytes literals are interpreted according to rules similar to those used by
 Standard C.  The recognized escape sequences are:
 
-+-----------------+---------------------------------+-------+
-| Escape Sequence | Meaning                         | Notes |
-+=================+=================================+=======+
-| ``\``\ <newline>| Backslash and newline ignored   | \(1)  |
-+-----------------+---------------------------------+-------+
-| ``\\``          | Backslash (``\``)               |       |
-+-----------------+---------------------------------+-------+
-| ``\'``          | Single quote (``'``)            |       |
-+-----------------+---------------------------------+-------+
-| ``\"``          | Double quote (``"``)            |       |
-+-----------------+---------------------------------+-------+
-| ``\a``          | ASCII Bell (BEL)                |       |
-+-----------------+---------------------------------+-------+
-| ``\b``          | ASCII Backspace (BS)            |       |
-+-----------------+---------------------------------+-------+
-| ``\f``          | ASCII Formfeed (FF)             |       |
-+-----------------+---------------------------------+-------+
-| ``\n``          | ASCII Linefeed (LF)             |       |
-+-----------------+---------------------------------+-------+
-| ``\r``          | ASCII Carriage Return (CR)      |       |
-+-----------------+---------------------------------+-------+
-| ``\t``          | ASCII Horizontal Tab (TAB)      |       |
-+-----------------+---------------------------------+-------+
-| ``\v``          | ASCII Vertical Tab (VT)         |       |
-+-----------------+---------------------------------+-------+
-| ``\ooo``        | Character with octal value      | (2,4) |
-|                 | *ooo*                           |       |
-+-----------------+---------------------------------+-------+
-| ``\xhh``        | Character with hex value *hh*   | (3,4) |
-+-----------------+---------------------------------+-------+
++-------------------------+---------------------------------+-------+
+| Escape Sequence         | Meaning                         | Notes |
++=========================+=================================+=======+
+| ``\``\ <newline>        | Backslash and newline ignored   | \(1)  |
++-------------------------+---------------------------------+-------+
+| ``\\``                  | Backslash (``\``)               |       |
++-------------------------+---------------------------------+-------+
+| ``\'``                  | Single quote (``'``)            |       |
++-------------------------+---------------------------------+-------+
+| ``\"``                  | Double quote (``"``)            |       |
++-------------------------+---------------------------------+-------+
+| ``\a``                  | ASCII Bell (BEL)                |       |
++-------------------------+---------------------------------+-------+
+| ``\b``                  | ASCII Backspace (BS)            |       |
++-------------------------+---------------------------------+-------+
+| ``\f``                  | ASCII Formfeed (FF)             |       |
++-------------------------+---------------------------------+-------+
+| ``\n``                  | ASCII Linefeed (LF)             |       |
++-------------------------+---------------------------------+-------+
+| ``\r``                  | ASCII Carriage Return (CR)      |       |
++-------------------------+---------------------------------+-------+
+| ``\t``                  | ASCII Horizontal Tab (TAB)      |       |
++-------------------------+---------------------------------+-------+
+| ``\v``                  | ASCII Vertical Tab (VT)         |       |
++-------------------------+---------------------------------+-------+
+| :samp:`\\\\{ooo}`       | Character with octal value      | (2,4) |
+|                         | *ooo*                           |       |
++-------------------------+---------------------------------+-------+
+| :samp:`\\x{hh}`         | Character with hex value *hh*   | (3,4) |
++-------------------------+---------------------------------+-------+
 
 Escape sequences only recognized in string literals are:
 
-+-----------------+---------------------------------+-------+
-| Escape Sequence | Meaning                         | Notes |
-+=================+=================================+=======+
-| ``\N{name}``    | Character named *name* in the   | \(5)  |
-|                 | Unicode database                |       |
-+-----------------+---------------------------------+-------+
-| ``\uxxxx``      | Character with 16-bit hex value | \(6)  |
-|                 | *xxxx*                          |       |
-+-----------------+---------------------------------+-------+
-| ``\Uxxxxxxxx``  | Character with 32-bit hex value | \(7)  |
-|                 | *xxxxxxxx*                      |       |
-+-----------------+---------------------------------+-------+
++-------------------------+---------------------------------+-------+
+| Escape Sequence         | Meaning                         | Notes |
++=========================+=================================+=======+
+| :samp:`\\N\\{{name}\\}` | Character named *name* in the   | \(5)  |
+|                         | Unicode database                |       |
++-------------------------+---------------------------------+-------+
+| :samp:`\\u{xxxx}`       | Character with 16-bit hex value | \(6)  |
+|                         | *xxxx*                          |       |
++-------------------------+---------------------------------+-------+
+| :samp:`\\U{xxxxxxxx}`   | Character with 32-bit hex value | \(7)  |
+|                         | *xxxxxxxx*                      |       |
++-------------------------+---------------------------------+-------+
 
 Notes:
 
@@ -649,12 +657,12 @@ is more easily recognized as broken.)  It is also important to note that the
 escape sequences only recognized in string literals fall into the category of
 unrecognized escapes for bytes literals.
 
-   .. versionchanged:: 3.6
-      Unrecognized escape sequences produce a :exc:`DeprecationWarning`.
+.. versionchanged:: 3.6
+   Unrecognized escape sequences produce a :exc:`DeprecationWarning`.
 
-   .. versionchanged:: 3.12
-      Unrecognized escape sequences produce a :exc:`SyntaxWarning`. In a future
-      Python version they will be eventually a :exc:`SyntaxError`.
+.. versionchanged:: 3.12
+   Unrecognized escape sequences produce a :exc:`SyntaxWarning`. In a future
+   Python version they will be eventually a :exc:`SyntaxError`.
 
 Even in a raw literal, quotes can be escaped with a backslash, but the
 backslash remains in the result; for example, ``r"\""`` is a valid string
@@ -741,16 +749,28 @@ Expressions in formatted string literals are treated like regular
 Python expressions surrounded by parentheses, with a few exceptions.
 An empty expression is not allowed, and both :keyword:`lambda`  and
 assignment expressions ``:=`` must be surrounded by explicit parentheses.
-Replacement expressions can contain line breaks (e.g. in triple-quoted
-strings), but they cannot contain comments.  Each expression is evaluated
-in the context where the formatted string literal appears, in order from
-left to right.
+Each expression is evaluated in the context where the formatted string literal
+appears, in order from left to right.  Replacement expressions can contain
+newlines in both single-quoted and triple-quoted f-strings and they can contain
+comments.  Everything that comes after a ``#`` inside a replacement field
+is a comment (even closing braces and quotes). In that case, replacement fields
+must be closed in a different line.
+
+.. code-block:: text
+
+   >>> f"abc{a # This is a comment }"
+   ... + 3}"
+   'abc5'
 
 .. versionchanged:: 3.7
    Prior to Python 3.7, an :keyword:`await` expression and comprehensions
    containing an :keyword:`async for` clause were illegal in the expressions
    in formatted string literals due to a problem with the implementation.
 
+.. versionchanged:: 3.12
+   Prior to Python 3.12, comments were not allowed inside f-string replacement
+   fields.
+
 When the equal sign ``'='`` is provided, the output will have the expression
 text, the ``'='`` and the evaluated value. Spaces after the opening brace
 ``'{'``, within the expression and after the ``'='`` are all retained in the
@@ -767,7 +787,7 @@ is converted before formatting.  Conversion ``'!s'`` calls :func:`str` on
 the result, ``'!r'`` calls :func:`repr`, and ``'!a'`` calls :func:`ascii`.
 
 The result is then formatted using the :func:`format` protocol.  The
-format specifier is passed to the :meth:`__format__` method of the
+format specifier is passed to the :meth:`~object.__format__` method of the
 expression or conversion result.  An empty string is passed when the
 format specifier is omitted.  The formatted result is then included in
 the final value of the whole string.
@@ -813,24 +833,30 @@ Some examples of formatted string literals::
    'line = "The mill\'s closed" '
 
 
-A consequence of sharing the same syntax as regular string literals is
-that characters in the replacement fields must not conflict with the
-quoting used in the outer formatted string literal::
+Reusing the outer f-string quoting type inside a replacement field is
+permitted::
 
-   f"abc {a["x"]} def"    # error: outer string literal ended prematurely
-   f"abc {a['x']} def"    # workaround: use different quoting
+   >>> a = dict(x=2)
+   >>> f"abc {a["x"]} def"
+   'abc 2 def'
 
-Backslashes are not allowed in format expressions and will raise
-an error::
+.. versionchanged:: 3.12
+   Prior to Python 3.12, reuse of the same quoting type of the outer f-string
+   inside a replacement field was not possible.
 
-   f"newline: {ord('\n')}"  # raises SyntaxError
+Backslashes are also allowed in replacement fields and are evaluated the same
+way as in any other context::
 
-To include a value in which a backslash escape is required, create
-a temporary variable.
+   >>> a = ["a", "b", "c"]
+   >>> print(f"List a contains:\n{"\n".join(a)}")
+   List a contains:
+   a
+   b
+   c
 
-   >>> newline = ord('\n')
-   >>> f"newline: {newline}"
-   'newline: 10'
+.. versionchanged:: 3.12
+   Prior to Python 3.12, backslashes were not permitted inside an f-string
+   replacement field.
 
 Formatted string literals cannot be used as docstrings, even if they do not
 include expressions.
@@ -1019,4 +1045,4 @@ occurrence outside string literals and comments is an unconditional error:
 
 .. rubric:: Footnotes
 
-.. [#] https://www.unicode.org/Public/15.0.0/ucd/NameAliases.txt
+.. [#] https://www.unicode.org/Public/15.1.0/ucd/NameAliases.txt
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index f7a8b44d195417..a9e65be1eda340 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -28,6 +28,7 @@ simple statements is:
               : | `future_stmt`
               : | `global_stmt`
               : | `nonlocal_stmt`
+              : | `type_stmt`
 
 
 .. _exprstmts:
@@ -209,7 +210,7 @@ Assignment of an object to a single target is recursively defined as follows.
 
   If the primary is a mapping object (such as a dictionary), the subscript must
   have a type compatible with the mapping's key type, and the mapping is then
-  asked to create a key/datum pair which maps the subscript to the assigned
+  asked to create a key/value pair which maps the subscript to the assigned
   object.  This can either replace an existing key/value pair with the same key
   value, or insert a new key/value pair (if no key with the same value existed).
 
@@ -1012,3 +1013,48 @@ pre-existing bindings in the local scope.
 
    :pep:`3104` - Access to Names in Outer Scopes
       The specification for the :keyword:`nonlocal` statement.
+
+.. _type:
+
+The :keyword:`!type` statement
+==============================
+
+.. index:: pair: statement; type
+
+.. productionlist:: python-grammar
+   type_stmt: 'type' `identifier` [`type_params`] "=" `expression`
+
+The :keyword:`!type` statement declares a type alias, which is an instance
+of :class:`typing.TypeAliasType`.
+
+For example, the following statement creates a type alias::
+
+   type Point = tuple[float, float]
+
+This code is roughly equivalent to::
+
+   annotation-def VALUE_OF_Point():
+       return tuple[float, float]
+   Point = typing.TypeAliasType("Point", VALUE_OF_Point())
+
+``annotation-def`` indicates an :ref:`annotation scope <annotation-scopes>`, which behaves
+mostly like a function, but with several small differences.
+
+The value of the
+type alias is evaluated in the annotation scope. It is not evaluated when the
+type alias is created, but only when the value is accessed through the type alias's
+:attr:`!__value__` attribute (see :ref:`lazy-evaluation`).
+This allows the type alias to refer to names that are not yet defined.
+
+Type aliases may be made generic by adding a :ref:`type parameter list <type-params>`
+after the name. See :ref:`generic-type-aliases` for more.
+
+:keyword:`!type` is a :ref:`soft keyword <soft-keywords>`.
+
+.. versionadded:: 3.12
+
+.. seealso::
+
+   :pep:`695` - Type Parameter Syntax
+      Introduced the :keyword:`!type` statement and syntax for
+      generic classes and functions.
diff --git a/Doc/requirements-oldest-sphinx.txt b/Doc/requirements-oldest-sphinx.txt
index d0390a04ea6dd8..597341d99ffeaa 100644
--- a/Doc/requirements-oldest-sphinx.txt
+++ b/Doc/requirements-oldest-sphinx.txt
@@ -7,32 +7,29 @@ blurb
 python-docs-theme>=2022.1
 
 # Generated from:
-#     pip install "Sphinx~=3.2.0" "docutils<0.17" "Jinja2<3" "MarkupSafe<2"
+#     pip install "Sphinx~=4.2.0"
 #     pip freeze
 #
-# Sphinx 3.2 comes from ``needs_sphinx = '3.2'`` in ``Doc/conf.py``.
-# Docutils<0.17, Jinja2<3, and MarkupSafe<2 are additionally specified as
-# Sphinx 3.2 is incompatible with newer releases of these packages.
+# Sphinx 4.2 comes from ``needs_sphinx = '4.2'`` in ``Doc/conf.py``.
 
-Sphinx==3.2.1
 alabaster==0.7.13
-Babel==2.12.1
-certifi==2022.12.7
-charset-normalizer==3.1.0
-colorama==0.4.6
-docutils==0.16
+Babel==2.13.0
+certifi==2023.7.22
+charset-normalizer==3.3.0
+docutils==0.17.1
 idna==3.4
 imagesize==1.4.1
-Jinja2==2.11.3
-MarkupSafe==1.1.1
-packaging==23.1
-Pygments==2.15.1
-requests==2.29.0
+Jinja2==3.1.2
+MarkupSafe==2.1.3
+packaging==23.2
+Pygments==2.16.1
+requests==2.31.0
 snowballstemmer==2.2.0
+Sphinx==4.2.0
 sphinxcontrib-applehelp==1.0.4
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==2.0.1
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
-urllib3==1.26.15
+urllib3==2.0.7
diff --git a/Doc/requirements.txt b/Doc/requirements.txt
index 9cbd15c2209dc6..04334fd5a464d4 100644
--- a/Doc/requirements.txt
+++ b/Doc/requirements.txt
@@ -6,15 +6,17 @@
 # Sphinx version is pinned so that new versions that introduce new warnings
 # won't suddenly cause build failures. Updating the version is fine as long
 # as no warnings are raised by doing so.
-sphinx==4.5.0
+# PR #104777: Sphinx 6.2 no longer uses imghdr, removed in Python 3.13.
+sphinx==6.2.1
 
 blurb
 
-sphinx-lint==0.6.7
+sphinx-autobuild
 sphinxext-opengraph==0.7.5
+sphinx-notfound-page==1.0.0
 
 # The theme used by the documentation is stored separately, so we need
 # to install that as well.
-python-docs-theme>=2022.1
+python-docs-theme>=2023.3.1,!=2023.7
 
 -c constraints.txt
diff --git a/Doc/tools/.nitignore b/Doc/tools/.nitignore
index 1d3503bf06f085..5ef68cc089d436 100644
--- a/Doc/tools/.nitignore
+++ b/Doc/tools/.nitignore
@@ -1,130 +1,51 @@
 # All RST files under Doc/ -- except these -- must pass Sphinx nit-picky mode,
-# as tested on the CI via touch-clean-files.py in doc.yml.
-# Add blank lines between files and keep them sorted lexicographically
-# to help avoid merge conflicts.
+# as tested on the CI via check-warnings.py in reusable-docs.yml.
+# Keep lines sorted lexicographically to help avoid merge conflicts.
 
-Doc/c-api/allocation.rst
-Doc/c-api/apiabiversion.rst
-Doc/c-api/arg.rst
-Doc/c-api/bool.rst
-Doc/c-api/buffer.rst
-Doc/c-api/bytes.rst
-Doc/c-api/call.rst
-Doc/c-api/capsule.rst
-Doc/c-api/cell.rst
-Doc/c-api/code.rst
-Doc/c-api/codec.rst
-Doc/c-api/complex.rst
-Doc/c-api/conversion.rst
-Doc/c-api/datetime.rst
 Doc/c-api/descriptor.rst
-Doc/c-api/dict.rst
 Doc/c-api/exceptions.rst
 Doc/c-api/file.rst
 Doc/c-api/float.rst
 Doc/c-api/gcsupport.rst
-Doc/c-api/import.rst
 Doc/c-api/init.rst
 Doc/c-api/init_config.rst
 Doc/c-api/intro.rst
-Doc/c-api/iterator.rst
-Doc/c-api/long.rst
-Doc/c-api/mapping.rst
-Doc/c-api/marshal.rst
 Doc/c-api/memory.rst
 Doc/c-api/memoryview.rst
 Doc/c-api/module.rst
-Doc/c-api/none.rst
 Doc/c-api/object.rst
-Doc/c-api/refcounting.rst
-Doc/c-api/sequence.rst
-Doc/c-api/set.rst
 Doc/c-api/stable.rst
 Doc/c-api/structures.rst
 Doc/c-api/sys.rst
-Doc/c-api/tuple.rst
 Doc/c-api/type.rst
-Doc/c-api/typehints.rst
 Doc/c-api/typeobj.rst
-Doc/c-api/unicode.rst
-Doc/c-api/veryhigh.rst
-Doc/c-api/weakref.rst
-Doc/extending/embedding.rst
 Doc/extending/extending.rst
-Doc/extending/newtypes.rst
-Doc/extending/newtypes_tutorial.rst
-Doc/faq/design.rst
-Doc/faq/extending.rst
-Doc/faq/gui.rst
-Doc/faq/library.rst
-Doc/faq/programming.rst
 Doc/glossary.rst
-Doc/howto/curses.rst
 Doc/howto/descriptor.rst
 Doc/howto/enum.rst
-Doc/howto/functional.rst
-Doc/howto/instrumentation.rst
 Doc/howto/isolating-extensions.rst
-Doc/howto/logging-cookbook.rst
 Doc/howto/logging.rst
-Doc/howto/regex.rst
-Doc/howto/sorting.rst
-Doc/howto/unicode.rst
 Doc/howto/urllib2.rst
-Doc/install/index.rst
-Doc/library/2to3.rst
-Doc/library/__future__.rst
-Doc/library/_thread.rst
-Doc/library/abc.rst
-Doc/library/aifc.rst
 Doc/library/ast.rst
-Doc/library/asyncio-dev.rst
-Doc/library/asyncio-eventloop.rst
 Doc/library/asyncio-extending.rst
-Doc/library/asyncio-future.rst
 Doc/library/asyncio-policy.rst
-Doc/library/asyncio-stream.rst
 Doc/library/asyncio-subprocess.rst
 Doc/library/asyncio-task.rst
-Doc/library/audioop.rst
 Doc/library/bdb.rst
 Doc/library/bisect.rst
-Doc/library/bz2.rst
 Doc/library/calendar.rst
-Doc/library/cgi.rst
-Doc/library/chunk.rst
-Doc/library/cmath.rst
 Doc/library/cmd.rst
-Doc/library/code.rst
-Doc/library/codecs.rst
-Doc/library/codeop.rst
 Doc/library/collections.abc.rst
 Doc/library/collections.rst
-Doc/library/compileall.rst
 Doc/library/concurrent.futures.rst
-Doc/library/concurrent.rst
 Doc/library/configparser.rst
-Doc/library/constants.rst
-Doc/library/contextlib.rst
-Doc/library/copy.rst
 Doc/library/csv.rst
-Doc/library/ctypes.rst
-Doc/library/curses.ascii.rst
-Doc/library/curses.rst
 Doc/library/datetime.rst
 Doc/library/dbm.rst
 Doc/library/decimal.rst
-Doc/library/devmode.rst
-Doc/library/difflib.rst
-Doc/library/dis.rst
-Doc/library/doctest.rst
 Doc/library/email.charset.rst
 Doc/library/email.compat32-message.rst
-Doc/library/email.encoders.rst
 Doc/library/email.errors.rst
-Doc/library/email.generator.rst
-Doc/library/email.headerregistry.rst
-Doc/library/email.message.rst
 Doc/library/email.mime.rst
 Doc/library/email.parser.rst
 Doc/library/email.policy.rst
@@ -132,150 +53,74 @@ Doc/library/enum.rst
 Doc/library/exceptions.rst
 Doc/library/faulthandler.rst
 Doc/library/fcntl.rst
-Doc/library/filecmp.rst
-Doc/library/fileinput.rst
-Doc/library/fractions.rst
 Doc/library/ftplib.rst
-Doc/library/functions.rst
 Doc/library/functools.rst
-Doc/library/getopt.rst
-Doc/library/getpass.rst
-Doc/library/gettext.rst
-Doc/library/graphlib.rst
-Doc/library/gzip.rst
-Doc/library/hashlib.rst
 Doc/library/http.client.rst
 Doc/library/http.cookiejar.rst
 Doc/library/http.cookies.rst
 Doc/library/http.server.rst
-Doc/library/idle.rst
-Doc/library/importlib.resources.abc.rst
-Doc/library/importlib.resources.rst
 Doc/library/importlib.rst
 Doc/library/inspect.rst
-Doc/library/io.rst
-Doc/library/json.rst
 Doc/library/locale.rst
 Doc/library/logging.config.rst
 Doc/library/logging.handlers.rst
-Doc/library/logging.rst
 Doc/library/lzma.rst
 Doc/library/mailbox.rst
 Doc/library/mmap.rst
-Doc/library/msilib.rst
-Doc/library/msvcrt.rst
 Doc/library/multiprocessing.rst
 Doc/library/multiprocessing.shared_memory.rst
-Doc/library/netrc.rst
-Doc/library/nntplib.rst
 Doc/library/numbers.rst
-Doc/library/operator.rst
 Doc/library/optparse.rst
-Doc/library/os.path.rst
 Doc/library/os.rst
-Doc/library/ossaudiodev.rst
 Doc/library/pickle.rst
 Doc/library/pickletools.rst
 Doc/library/platform.rst
 Doc/library/plistlib.rst
-Doc/library/poplib.rst
-Doc/library/posix.rst
-Doc/library/pprint.rst
 Doc/library/profile.rst
-Doc/library/pty.rst
-Doc/library/py_compile.rst
 Doc/library/pyclbr.rst
 Doc/library/pydoc.rst
 Doc/library/pyexpat.rst
 Doc/library/random.rst
-Doc/library/re.rst
 Doc/library/readline.rst
-Doc/library/reprlib.rst
 Doc/library/resource.rst
 Doc/library/rlcompleter.rst
-Doc/library/sched.rst
 Doc/library/select.rst
-Doc/library/selectors.rst
-Doc/library/shelve.rst
-Doc/library/shutil.rst
 Doc/library/signal.rst
-Doc/library/site.rst
 Doc/library/smtplib.rst
 Doc/library/socket.rst
-Doc/library/socketserver.rst
 Doc/library/ssl.rst
-Doc/library/stat.rst
 Doc/library/stdtypes.rst
 Doc/library/string.rst
-Doc/library/struct.rst
 Doc/library/subprocess.rst
-Doc/library/sunau.rst
-Doc/library/sys.rst
-Doc/library/sys_path_init.rst
-Doc/library/sysconfig.rst
 Doc/library/syslog.rst
 Doc/library/tarfile.rst
-Doc/library/telnetlib.rst
 Doc/library/tempfile.rst
 Doc/library/termios.rst
 Doc/library/test.rst
-Doc/library/textwrap.rst
-Doc/library/threading.rst
-Doc/library/time.rst
 Doc/library/tkinter.rst
 Doc/library/tkinter.scrolledtext.rst
-Doc/library/tkinter.tix.rst
 Doc/library/tkinter.ttk.rst
 Doc/library/traceback.rst
-Doc/library/tty.rst
-Doc/library/turtle.rst
-Doc/library/unittest.mock-examples.rst
 Doc/library/unittest.mock.rst
 Doc/library/unittest.rst
-Doc/library/urllib.error.rst
 Doc/library/urllib.parse.rst
 Doc/library/urllib.request.rst
-Doc/library/uuid.rst
-Doc/library/wave.rst
-Doc/library/weakref.rst
-Doc/library/webbrowser.rst
-Doc/library/winreg.rst
-Doc/library/winsound.rst
 Doc/library/wsgiref.rst
-Doc/library/xdrlib.rst
 Doc/library/xml.dom.minidom.rst
 Doc/library/xml.dom.pulldom.rst
 Doc/library/xml.dom.rst
-Doc/library/xml.etree.elementtree.rst
-Doc/library/xml.rst
 Doc/library/xml.sax.handler.rst
 Doc/library/xml.sax.reader.rst
 Doc/library/xml.sax.rst
-Doc/library/xml.sax.utils.rst
 Doc/library/xmlrpc.client.rst
-Doc/library/xmlrpc.rst
 Doc/library/xmlrpc.server.rst
 Doc/library/zlib.rst
-Doc/license.rst
 Doc/reference/compound_stmts.rst
 Doc/reference/datamodel.rst
 Doc/reference/expressions.rst
 Doc/reference/import.rst
-Doc/reference/lexical_analysis.rst
 Doc/reference/simple_stmts.rst
-Doc/tutorial/appendix.rst
-Doc/tutorial/classes.rst
-Doc/tutorial/controlflow.rst
 Doc/tutorial/datastructures.rst
-Doc/tutorial/errors.rst
-Doc/tutorial/inputoutput.rst
-Doc/tutorial/interactive.rst
-Doc/tutorial/introduction.rst
-Doc/tutorial/modules.rst
-Doc/tutorial/stdlib2.rst
-Doc/using/cmdline.rst
-Doc/using/configure.rst
-Doc/using/unix.rst
 Doc/using/windows.rst
 Doc/whatsnew/2.0.rst
 Doc/whatsnew/2.1.rst
diff --git a/Doc/tools/check-warnings.py b/Doc/tools/check-warnings.py
new file mode 100644
index 00000000000000..809a8d63087e12
--- /dev/null
+++ b/Doc/tools/check-warnings.py
@@ -0,0 +1,311 @@
+#!/usr/bin/env python3
+"""
+Check the output of running Sphinx in nit-picky mode (missing references).
+"""
+from __future__ import annotations
+
+import argparse
+import itertools
+import os
+import re
+import subprocess
+import sys
+from pathlib import Path
+from typing import TextIO
+
+# Exclude these whether they're dirty or clean,
+# because they trigger a rebuild of dirty files.
+EXCLUDE_FILES = {
+    "Doc/whatsnew/changelog.rst",
+}
+
+# Subdirectories of Doc/ to exclude.
+EXCLUDE_SUBDIRS = {
+    ".env",
+    ".venv",
+    "env",
+    "includes",
+    "venv",
+}
+
+# Regex pattern to match the parts of a Sphinx warning
+WARNING_PATTERN = re.compile(
+    r"(?P<file>([A-Za-z]:[\\/])?[^:]+):(?P<line>\d+): WARNING: (?P<msg>.+)"
+)
+
+# Regex pattern to match the line numbers in a Git unified diff
+DIFF_PATTERN = re.compile(
+    r"^@@ -(?P<linea>\d+)(?:,(?P<removed>\d+))? \+(?P<lineb>\d+)(?:,(?P<added>\d+))? @@",
+    flags=re.MULTILINE,
+)
+
+
+def get_diff_files(ref_a: str, ref_b: str, filter_mode: str = "") -> set[Path]:
+    """List the files changed between two Git refs, filtered by change type."""
+    added_files_result = subprocess.run(
+        [
+            "git",
+            "diff",
+            f"--diff-filter={filter_mode}",
+            "--name-only",
+            f"{ref_a}...{ref_b}",
+            "--",
+        ],
+        stdout=subprocess.PIPE,
+        check=True,
+        text=True,
+        encoding="UTF-8",
+    )
+
+    added_files = added_files_result.stdout.strip().split("\n")
+    return {Path(file.strip()) for file in added_files if file.strip()}
+
+
+def get_diff_lines(ref_a: str, ref_b: str, file: Path) -> list[int]:
+    """List the lines changed between two Git refs for a specific file."""
+    diff_output = subprocess.run(
+        [
+            "git",
+            "diff",
+            "--unified=0",
+            f"{ref_a}...{ref_b}",
+            "--",
+            str(file),
+        ],
+        stdout=subprocess.PIPE,
+        check=True,
+        text=True,
+        encoding="UTF-8",
+    )
+
+    # Scrape line offsets + lengths from diff and convert to line numbers
+    line_matches = DIFF_PATTERN.finditer(diff_output.stdout)
+    # Removed and added line counts are 1 if not printed
+    line_match_values = [
+        line_match.groupdict(default=1) for line_match in line_matches
+    ]
+    line_ints = [
+        (int(match_value["lineb"]), int(match_value["added"]))
+        for match_value in line_match_values
+    ]
+    line_ranges = [
+        range(line_b, line_b + added) for line_b, added in line_ints
+    ]
+    line_numbers = list(itertools.chain(*line_ranges))
+
+    return line_numbers
+
+
+def get_para_line_numbers(file_obj: TextIO) -> list[list[int]]:
+    """Get the line numbers of text in a file object, grouped by paragraph."""
+    paragraphs = []
+    prev_line = None
+    for lineno, line in enumerate(file_obj):
+        lineno = lineno + 1
+        if prev_line is None or (line.strip() and not prev_line.strip()):
+            paragraph = [lineno - 1]
+            paragraphs.append(paragraph)
+        paragraph.append(lineno)
+        prev_line = line
+    return paragraphs
+
+
+def filter_and_parse_warnings(
+    warnings: list[str], files: set[Path]
+) -> list[re.Match[str]]:
+    """Get the warnings matching passed files and parse them with regex."""
+    filtered_warnings = [
+        warning
+        for warning in warnings
+        if any(str(file) in warning for file in files)
+    ]
+    warning_matches = [
+        WARNING_PATTERN.fullmatch(warning.strip())
+        for warning in filtered_warnings
+    ]
+    non_null_matches = [warning for warning in warning_matches if warning]
+    return non_null_matches
+
+
+def filter_warnings_by_diff(
+    warnings: list[re.Match[str]], ref_a: str, ref_b: str, file: Path
+) -> list[re.Match[str]]:
+    """Filter the passed per-file warnings to just those on changed lines."""
+    diff_lines = get_diff_lines(ref_a, ref_b, file)
+    with file.open(encoding="UTF-8") as file_obj:
+        paragraphs = get_para_line_numbers(file_obj)
+    touched_paras = [
+        para_lines
+        for para_lines in paragraphs
+        if set(diff_lines) & set(para_lines)
+    ]
+    touched_para_lines = set(itertools.chain(*touched_paras))
+    warnings_infile = [
+        warning for warning in warnings if str(file) in warning["file"]
+    ]
+    warnings_touched = [
+        warning
+        for warning in warnings_infile
+        if int(warning["line"]) in touched_para_lines
+    ]
+    return warnings_touched
+
+
+def process_touched_warnings(
+    warnings: list[str], ref_a: str, ref_b: str
+) -> list[re.Match[str]]:
+    """Filter a list of Sphinx warnings to those affecting touched lines."""
+    added_files, modified_files = tuple(
+        get_diff_files(ref_a, ref_b, filter_mode=mode) for mode in ("A", "M")
+    )
+
+    warnings_added = filter_and_parse_warnings(warnings, added_files)
+    warnings_modified = filter_and_parse_warnings(warnings, modified_files)
+
+    modified_files_warned = {
+        file
+        for file in modified_files
+        if any(str(file) in warning["file"] for warning in warnings_modified)
+    }
+
+    warnings_modified_touched = [
+        filter_warnings_by_diff(warnings_modified, ref_a, ref_b, file)
+        for file in modified_files_warned
+    ]
+    warnings_touched = warnings_added + list(
+        itertools.chain(*warnings_modified_touched)
+    )
+
+    return warnings_touched
+
+
+def annotate_diff(
+    warnings: list[str], ref_a: str = "main", ref_b: str = "HEAD"
+) -> None:
+    """
+    Convert Sphinx warning messages to GitHub Actions for changed paragraphs.
+
+    Converts lines like:
+        .../Doc/library/cgi.rst:98: WARNING: reference target not found
+    to:
+        ::warning file=.../Doc/library/cgi.rst,line=98::reference target not found
+
+    See:
+    https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-warning-message
+    """
+    warnings_touched = process_touched_warnings(warnings, ref_a, ref_b)
+    print("Emitting doc warnings matching modified lines:")
+    for warning in warnings_touched:
+        print("::warning file={file},line={line}::{msg}".format_map(warning))
+        print(warning[0])
+    if not warnings_touched:
+        print("None")
+
+
+def fail_if_regression(
+    warnings: list[str], files_with_expected_nits: set[str], files_with_nits: set[str]
+) -> int:
+    """
+    Ensure some files always pass Sphinx nit-picky mode (no missing references).
+    These are files which are *not* in .nitignore.
+    """
+    all_rst = {
+        str(rst)
+        for rst in Path("Doc/").rglob("*.rst")
+        if rst.parts[1] not in EXCLUDE_SUBDIRS
+    }
+    should_be_clean = all_rst - files_with_expected_nits - EXCLUDE_FILES
+    problem_files = sorted(should_be_clean & files_with_nits)
+    if problem_files:
+        print("\nError: must not contain warnings:\n")
+        for filename in problem_files:
+            print(filename)
+            for warning in warnings:
+                if filename in warning:
+                    if match := WARNING_PATTERN.fullmatch(warning):
+                        print("  {line}: {msg}".format_map(match))
+        return -1
+    return 0
+
+
+def fail_if_improved(
+    files_with_expected_nits: set[str], files_with_nits: set[str]
+) -> int:
+    """
+    We may have fixed warnings in some files so that the files are now completely clean.
+    Good news! Let's add them to .nitignore to prevent regression.
+    """
+    files_with_no_nits = files_with_expected_nits - files_with_nits
+    if files_with_no_nits:
+        print("\nCongratulations! You improved:\n")
+        for filename in sorted(files_with_no_nits):
+            print(filename)
+        print("\nPlease remove from Doc/tools/.nitignore\n")
+        return -1
+    return 0
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--annotate-diff",
+        nargs="*",
+        metavar=("BASE_REF", "HEAD_REF"),
+        help="Add GitHub Actions annotations on the diff for warnings on "
+        "lines changed between the given refs (main and HEAD, by default)",
+    )
+    parser.add_argument(
+        "--fail-if-regression",
+        action="store_true",
+        help="Fail if known-good files have warnings",
+    )
+    parser.add_argument(
+        "--fail-if-improved",
+        action="store_true",
+        help="Fail if new files with no nits are found",
+    )
+
+    args = parser.parse_args(argv)
+    if args.annotate_diff is not None and len(args.annotate_diff) > 2:
+        parser.error(
+            "--annotate-diff takes between 0 and 2 ref args, not "
+            f"{len(args.annotate_diff)} {tuple(args.annotate_diff)}"
+        )
+    exit_code = 0
+
+    wrong_directory_msg = "Must run this script from the repo root"
+    assert Path("Doc").exists() and Path("Doc").is_dir(), wrong_directory_msg
+
+    with Path("Doc/sphinx-warnings.txt").open(encoding="UTF-8") as f:
+        warnings = f.read().splitlines()
+
+    cwd = str(Path.cwd()) + os.path.sep
+    files_with_nits = {
+        warning.removeprefix(cwd).split(":")[0]
+        for warning in warnings
+        if "Doc/" in warning
+    }
+
+    with Path("Doc/tools/.nitignore").open(encoding="UTF-8") as clean_files:
+        files_with_expected_nits = {
+            filename.strip()
+            for filename in clean_files
+            if filename.strip() and not filename.startswith("#")
+        }
+
+    if args.annotate_diff is not None:
+        annotate_diff(warnings, *args.annotate_diff)
+
+    if args.fail_if_regression:
+        exit_code += fail_if_regression(
+            warnings, files_with_expected_nits, files_with_nits
+        )
+
+    if args.fail_if_improved:
+        exit_code += fail_if_improved(files_with_expected_nits, files_with_nits)
+
+    return exit_code
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/Doc/tools/extensions/pyspecific.py b/Doc/tools/extensions/pyspecific.py
index cd8d9febb0d13b..31c2544caf601c 100644
--- a/Doc/tools/extensions/pyspecific.py
+++ b/Doc/tools/extensions/pyspecific.py
@@ -14,29 +14,27 @@
 from os import getenv, path
 from time import asctime
 from pprint import pformat
+
+from docutils import nodes, utils
 from docutils.io import StringOutput
 from docutils.parsers.rst import Directive
 from docutils.utils import new_document
-
-from docutils import nodes, utils
-
 from sphinx import addnodes
 from sphinx.builders import Builder
-try:
-    from sphinx.errors import NoUri
-except ImportError:
-    from sphinx.environment import NoUri
+from sphinx.domains.python import PyFunction, PyMethod
+from sphinx.errors import NoUri
 from sphinx.locale import _ as sphinx_gettext
-from sphinx.util import status_iterator, logging
+from sphinx.util import logging
 from sphinx.util.docutils import SphinxDirective
 from sphinx.util.nodes import split_explicit_title
 from sphinx.writers.text import TextWriter, TextTranslator
 
 try:
-    from sphinx.domains.python import PyFunction, PyMethod
+    # Sphinx 6+
+    from sphinx.util.display import status_iterator
 except ImportError:
-    from sphinx.domains.python import PyClassmember as PyMethod
-    from sphinx.domains.python import PyModulelevel as PyFunction
+    # Deprecated in Sphinx 6.1, will be removed in Sphinx 8
+    from sphinx.util import status_iterator
 
 
 ISSUE_URI = 'https://bugs.python.org/issue?@action=redirect&bpo=%s'
@@ -100,14 +98,13 @@ class ImplementationDetail(Directive):
     final_argument_whitespace = True
 
     # This text is copied to templates/dummy.html
-    label_text = 'CPython implementation detail:'
+    label_text = sphinx_gettext('CPython implementation detail:')
 
     def run(self):
         self.assert_has_content()
         pnode = nodes.compound(classes=['impl-detail'])
-        label = sphinx_gettext(self.label_text)
         content = self.content
-        add_text = nodes.strong(label, label)
+        add_text = nodes.strong(self.label_text, self.label_text)
         self.state.nested_parse(content, self.content_offset, pnode)
         content = nodes.inline(pnode[0].rawsource, translatable=True)
         content.source = pnode[0].source
@@ -130,8 +127,8 @@ class Availability(SphinxDirective):
     # known platform, libc, and threading implementations
     known_platforms = frozenset({
         "AIX", "Android", "BSD", "DragonFlyBSD", "Emscripten", "FreeBSD",
-        "Linux", "NetBSD", "OpenBSD", "POSIX", "Solaris", "Unix", "VxWorks",
-        "WASI", "Windows", "macOS",
+        "GNU/kFreeBSD", "Linux", "NetBSD", "OpenBSD", "POSIX", "Solaris",
+        "Unix", "VxWorks", "WASI", "Windows", "macOS",
         # libc
         "BSD libc", "glibc", "musl",
         # POSIX platforms with pthreads
@@ -182,7 +179,7 @@ def parse_platforms(self):
         if unknown:
             cls = type(self)
             logger = logging.getLogger(cls.__qualname__)
-            logger.warn(
+            logger.warning(
                 f"Unknown platform(s) or syntax '{' '.join(sorted(unknown))}' "
                 f"in '.. availability:: {self.arguments[0]}', see "
                 f"{__file__}:{cls.__qualname__}.known_platforms for a set "
@@ -236,9 +233,9 @@ class AuditEvent(Directive):
     final_argument_whitespace = True
 
     _label = [
-        "Raises an :ref:`auditing event <auditing>` {name} with no arguments.",
-        "Raises an :ref:`auditing event <auditing>` {name} with argument {args}.",
-        "Raises an :ref:`auditing event <auditing>` {name} with arguments {args}.",
+        sphinx_gettext("Raises an :ref:`auditing event <auditing>` {name} with no arguments."),
+        sphinx_gettext("Raises an :ref:`auditing event <auditing>` {name} with argument {args}."),
+        sphinx_gettext("Raises an :ref:`auditing event <auditing>` {name} with arguments {args}."),
     ]
 
     @property
@@ -254,7 +251,7 @@ def run(self):
         else:
             args = []
 
-        label = sphinx_gettext(self._label[min(2, len(args))])
+        label = self._label[min(2, len(args))]
         text = label.format(name="``{}``".format(name),
                             args=", ".join("``{}``".format(a) for a in args if a))
 
@@ -269,7 +266,7 @@ def run(self):
         info = env.all_audit_events.setdefault(name, new_info)
         if info is not new_info:
             if not self._do_args_match(info['args'], new_info['args']):
-                self.logger.warn(
+                self.logger.warning(
                     "Mismatched arguments for audit-event {}: {!r} != {!r}"
                     .format(name, info['args'], new_info['args'])
                 )
@@ -416,8 +413,8 @@ class DeprecatedRemoved(Directive):
     final_argument_whitespace = True
     option_spec = {}
 
-    _deprecated_label = 'Deprecated since version {deprecated}, will be removed in version {removed}'
-    _removed_label = 'Deprecated since version {deprecated}, removed in version {removed}'
+    _deprecated_label = sphinx_gettext('Deprecated since version {deprecated}, will be removed in version {removed}')
+    _removed_label = sphinx_gettext('Deprecated since version {deprecated}, removed in version {removed}')
 
     def run(self):
         node = addnodes.versionmodified()
@@ -433,7 +430,6 @@ def run(self):
         else:
             label = self._removed_label
 
-        label = sphinx_gettext(label)
         text = label.format(deprecated=self.arguments[0], removed=self.arguments[1])
         if len(self.arguments) == 3:
             inodes, messages = self.state.inline_text(self.arguments[2],
@@ -546,7 +542,7 @@ def write(self, *ignored):
                                      'building topics... ',
                                      length=len(pydoc_topic_labels)):
             if label not in self.env.domaindata['std']['labels']:
-                self.env.logger.warn('label %r not in documentation' % label)
+                self.env.logger.warning(f'label {label!r} not in documentation')
                 continue
             docname, labelid, sectname = self.env.domaindata['std']['labels'][label]
             doctree = self.env.get_and_resolve_doctree(docname, self)
@@ -561,6 +557,7 @@ def finish(self):
         try:
             f.write('# -*- coding: utf-8 -*-\n'.encode('utf-8'))
             f.write(('# Autogenerated by Sphinx on %s\n' % asctime()).encode('utf-8'))
+            f.write('# as part of the release process.\n'.encode('utf-8'))
             f.write(('topics = ' + pformat(self.topics) + '\n').encode('utf-8'))
         finally:
             f.close()
@@ -610,6 +607,13 @@ def parse_pdb_command(env, sig, signode):
     return fullname
 
 
+def parse_monitoring_event(env, sig, signode):
+    """Transform a monitoring event signature into RST nodes."""
+    signode += addnodes.desc_addname('sys.monitoring.events.', 'sys.monitoring.events.')
+    signode += addnodes.desc_name(sig, sig)
+    return sig
+
+
 def process_audit_events(app, doctree, fromdocname):
     for node in doctree.traverse(audit_event_list):
         break
@@ -710,7 +714,7 @@ def setup(app):
     app.add_builder(PydocTopicsBuilder)
     app.add_object_type('opcode', 'opcode', '%s (opcode)', parse_opcode_signature)
     app.add_object_type('pdbcommand', 'pdbcmd', '%s (pdb command)', parse_pdb_command)
-    app.add_object_type('2to3fixer', '2to3fixer', '%s (2to3 fixer)')
+    app.add_object_type('monitoring-event', 'monitoring-event', '%s (monitoring event)', parse_monitoring_event)
     app.add_directive_to_domain('py', 'decorator', PyDecoratorFunction)
     app.add_directive_to_domain('py', 'decoratormethod', PyDecoratorMethod)
     app.add_directive_to_domain('py', 'coroutinefunction', PyCoroutineFunction)
diff --git a/Doc/tools/templates/download.html b/Doc/tools/templates/download.html
index 7920e0619f9337..b5353d6fb77ab4 100644
--- a/Doc/tools/templates/download.html
+++ b/Doc/tools/templates/download.html
@@ -49,12 +49,12 @@ <h2>Unpacking</h2>
 
 <p>Unix users should download the .tar.bz2 archives; these are bzipped tar
 archives and can be handled in the usual way using tar and the bzip2
-program. The <a href="http://www.info-zip.org">InfoZIP</a> unzip program can be
+program. The <a href="https://infozip.sourceforge.net">Info-ZIP</a> unzip program can be
 used to handle the ZIP archives if desired. The .tar.bz2 archives provide the
 best compression and fastest download times.</p>
 
 <p>Windows users can use the ZIP archives since those are customary on that
-platform. These are created on Unix using the InfoZIP zip program.</p>
+platform. These are created on Unix using the Info-ZIP zip program.</p>
 
 
 <h2>Problems</h2>
diff --git a/Doc/tools/templates/indexcontent.html b/Doc/tools/templates/indexcontent.html
index a96746b69fd41b..1e3ab7cfe02fee 100644
--- a/Doc/tools/templates/indexcontent.html
+++ b/Doc/tools/templates/indexcontent.html
@@ -62,6 +62,7 @@ <h1>{{ docstitle|e }}</h1>
     </td><td width="50%">
       <p class="biglink"><a class="biglink" href="{{ pathto("license") }}">{% trans %}History and License of Python{% endtrans %}</a></p>
       <p class="biglink"><a class="biglink" href="{{ pathto("copyright") }}">{% trans %}Copyright{% endtrans %}</a></p>
+      <p class="biglink"><a class="biglink" href="{{ pathto("download") }}">{% trans %}Download the documentation{% endtrans %}</a></p>
     </td></tr>
   </table>
 {% endblock %}
diff --git a/Doc/tools/templates/layout.html b/Doc/tools/templates/layout.html
index b91f8138553e62..9498b2ccc5af92 100644
--- a/Doc/tools/templates/layout.html
+++ b/Doc/tools/templates/layout.html
@@ -4,16 +4,16 @@
 {%- if outdated %}
 <div id="outdated-warning" style="padding: .5em; text-align: center; background-color: #FFBABA; color: #6A0E0E;">
     {% trans %}This document is for an old version of Python that is no longer supported.
-    You should upgrade, and read the {% endtrans %}
-    <a href="/3/{{ pagename }}{{ file_suffix }}">{% trans %} Python documentation for the current stable release{% endtrans %}</a>.
+    You should upgrade, and read the{% endtrans %}
+    <a href="/3/{{ pagename }}{{ file_suffix }}">{% trans %}Python documentation for the current stable release{% endtrans %}</a>.
 </div>
 {%- endif %}
 
 {%- if is_deployment_preview %}
 <div id="deployment-preview-warning" style="padding: .5em; text-align: center; background-color: #fff2ba; color: #6a580e;">
   {% trans %}This is a deploy preview created from a <a href="{{ repository_url }}/pull/{{ pr_id }}">pull request</a>.
-  For authoritative documentation, see the {% endtrans %}
-  <a href="https://docs.python.org/3/{{ pagename }}{{ file_suffix }}">{% trans %} the current stable release{% endtrans %}</a>.
+  For authoritative documentation, see{% endtrans %}
+  <a href="https://docs.python.org/3/{{ pagename }}{{ file_suffix }}">{% trans %}the current stable release{% endtrans %}</a>.
 </div>
 {%- endif %}
 {% endblock %}
diff --git a/Doc/tools/templates/search.html b/Doc/tools/templates/search.html
index f2ac2ea0f09873..852974461380f2 100644
--- a/Doc/tools/templates/search.html
+++ b/Doc/tools/templates/search.html
@@ -1,48 +1,62 @@
 {% extends "!search.html" %}
 {% block extrahead %}
     {{ super() }}
+    <meta name="robots" content="noindex">
     <script type="text/javascript">
-        var GLOSSARY_PAGE = 'glossary.html';
+        const GLOSSARY_PAGE = 'glossary.html';
 
-        jQuery(function() {
-            $.getJSON("_static/glossary.json", function(glossary) {
-                var RESULT_TEMPLATE = '<div style="display: none" class="admonition seealso" id="glossary-result">' +
+        document.addEventListener('DOMContentLoaded', function() {
+          fetch('_static/glossary.json')
+            .then(function(response) {
+              if (response.ok) {
+                return response.json();
+              } else {
+                throw new Error('Failed to fetch glossary.json');
+              }
+            })
+            .then(function(glossary) {
+              const RESULT_TEMPLATE = '<div style="display: none" class="admonition seealso" id="glossary-result">' +
                                       '  <p class="topic-title">' +
                                       '    <a class="glossary-title" href="#"></a>' +
                                       '  </p>' +
                                       '  <div class="glossary-body"></div>' +
                                       '</div>';
-                $("#search-results").prepend(RESULT_TEMPLATE);
+              let searchResults = document.getElementById('search-results');
+              searchResults.insertAdjacentHTML('afterbegin', RESULT_TEMPLATE);
 
-                var params = $.getQueryParameters();
-                if (params.q) {
-                    var search_param = params.q[0].toLowerCase();
-                    var glossary_item = glossary[search_param];
-                    if (glossary_item) {
-                        var resultDiv = $("#glossary-result");
+              const params = new URLSearchParams(document.location.search).get("q");
+              if (params) {
+                const searchParam = params.toLowerCase();
+                const glossaryItem = glossary[searchParam];
+                if (glossaryItem) {
+                  let resultDiv = document.getElementById('glossary-result');
 
-                        // set up the title text with a link to the glossary page
-                        resultDiv.find(".glossary-title").text('Glossary: ' + glossary_item.title);
-                        var link_target = search_param.replace(/ /g, '-');
-                        resultDiv.find(".glossary-title").attr(
-                            'href', GLOSSARY_PAGE + '#term-' + link_target
-                        );
+                  // set up the title text with a link to the glossary page
+                  let glossaryTitle = resultDiv.querySelector('.glossary-title');
+                  glossaryTitle.textContent = 'Glossary: ' + glossaryItem.title;
+                  const linkTarget = searchParam.replace(/ /g, '-');
+                  glossaryTitle.href = GLOSSARY_PAGE + '#term-' + linkTarget;
 
-                        // rewrite any anchor links (to other glossary terms)
-                        // to have a full reference to the glossary page
-                        var body = $(glossary_item.body).children();
-                        body.find("a[href^='#']").each(function() {
-                            var current_url = $(this).attr('href');
-                            $(this).attr('href', GLOSSARY_PAGE + current_url);
-                        });
-                        resultDiv.find(".glossary-body").html(body);
+                  // rewrite any anchor links (to other glossary terms)
+                  // to have a full reference to the glossary page
+                  let body = document.createElement('div');
+                  body.innerHTML = glossaryItem.body;
+                  const anchorLinks = body.querySelectorAll('a[href^="#"]');
+                  anchorLinks.forEach(function(link) {
+                    const currentUrl = link.getAttribute('href');
+                    link.href = GLOSSARY_PAGE + currentUrl;
+                  });
+                  resultDiv.querySelector('.glossary-body').appendChild(body);
 
-                        resultDiv.show();
-                    } else {
-                        $("#glossary-result").hide('');
-                    }
+                  resultDiv.style.display = '';
+                } else {
+                  document.getElementById('glossary-result').style.display = 'none';
                 }
+              }
+            })
+            .catch(function(error) {
+              console.error(error);
             });
         });
     </script>
-{% endblock %}
\ No newline at end of file
+{% endblock %}
diff --git a/Doc/tools/touch-clean-files.py b/Doc/tools/touch-clean-files.py
deleted file mode 100644
index 19bc1be31deb26..00000000000000
--- a/Doc/tools/touch-clean-files.py
+++ /dev/null
@@ -1,44 +0,0 @@
-#!/usr/bin/env python3
-"""
-Touch files that must pass Sphinx nit-picky mode
-so they are rebuilt and we can catch regressions.
-"""
-
-from pathlib import Path
-
-wrong_directory_msg = "Must run this script from the repo root"
-assert Path("Doc").exists() and Path("Doc").is_dir(), wrong_directory_msg
-
-# Exclude these whether they're dirty or clean,
-# because they trigger a rebuild of dirty files.
-EXCLUDE_FILES = {
-    Path("Doc/whatsnew/changelog.rst"),
-}
-
-# Subdirectories of Doc/ to exclude.
-EXCLUDE_SUBDIRS = {
-    ".env",
-    ".venv",
-    "env",
-    "includes",
-    "venv",
-}
-
-ALL_RST = {
-    rst for rst in Path("Doc/").rglob("*.rst") if rst.parts[1] not in EXCLUDE_SUBDIRS
-}
-
-with Path("Doc/tools/.nitignore").open() as clean_files:
-    DIRTY = {
-        Path(filename.strip())
-        for filename in clean_files
-        if filename.strip() and not filename.startswith("#")
-    }
-
-CLEAN = ALL_RST - DIRTY - EXCLUDE_FILES
-
-print("Touching:")
-for filename in sorted(CLEAN):
-    print(filename)
-    filename.touch()
-print(f"Touched {len(CLEAN)} files")
diff --git a/Doc/tools/warnings-to-gh-actions.py b/Doc/tools/warnings-to-gh-actions.py
deleted file mode 100644
index da33a4ede07abc..00000000000000
--- a/Doc/tools/warnings-to-gh-actions.py
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env python3
-
-"""
-Convert Sphinx warning messages to GitHub Actions.
-
-Converts lines like:
-    .../Doc/library/cgi.rst:98: WARNING: reference target not found
-to:
-    ::warning file=.../Doc/library/cgi.rst,line=98::reference target not found
-
-Non-matching lines are echoed unchanged.
-
-see: https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-warning-message
-"""
-
-import re
-import sys
-
-pattern = re.compile(r'(?P<file>[^:]+):(?P<line>\d+): WARNING: (?P<msg>.+)')
-
-for line in sys.stdin:
-    if match := pattern.fullmatch(line.strip()):
-        print('::warning file={file},line={line}::{msg}'.format_map(match))
-    else:
-        print(line)
diff --git a/Doc/tutorial/appendix.rst b/Doc/tutorial/appendix.rst
index 241a812037469e..588591fcdb726f 100644
--- a/Doc/tutorial/appendix.rst
+++ b/Doc/tutorial/appendix.rst
@@ -101,8 +101,8 @@ in the script::
 The Customization Modules
 -------------------------
 
-Python provides two hooks to let you customize it: :mod:`sitecustomize` and
-:mod:`usercustomize`.  To see how it works, you need first to find the location
+Python provides two hooks to let you customize it: :index:`sitecustomize` and
+:index:`usercustomize`.  To see how it works, you need first to find the location
 of your user site-packages directory.  Start Python and run this code::
 
    >>> import site
@@ -113,9 +113,9 @@ Now you can create a file named :file:`usercustomize.py` in that directory and
 put anything you want in it.  It will affect every invocation of Python, unless
 it is started with the :option:`-s` option to disable the automatic import.
 
-:mod:`sitecustomize` works in the same way, but is typically created by an
+:index:`sitecustomize` works in the same way, but is typically created by an
 administrator of the computer in the global site-packages directory, and is
-imported before :mod:`usercustomize`.  See the documentation of the :mod:`site`
+imported before :index:`usercustomize`.  See the documentation of the :mod:`site`
 module for more details.
 
 
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index 06445e000c1ef6..3bf138ca225ee5 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -91,7 +91,7 @@ Attributes may be read-only or writable.  In the latter case, assignment to
 attributes is possible.  Module attributes are writable: you can write
 ``modname.the_answer = 42``.  Writable attributes may also be deleted with the
 :keyword:`del` statement.  For example, ``del modname.the_answer`` will remove
-the attribute :attr:`the_answer` from the object named by ``modname``.
+the attribute :attr:`!the_answer` from the object named by ``modname``.
 
 Namespaces are created at different moments and have different lifetimes.  The
 namespace containing the built-in names is created when the Python interpreter
@@ -249,7 +249,7 @@ created.  This is basically a wrapper around the contents of the namespace
 created by the class definition; we'll learn more about class objects in the
 next section.  The original local scope (the one in effect just before the class
 definition was entered) is reinstated, and the class object is bound here to the
-class name given in the class definition header (:class:`ClassName` in the
+class name given in the class definition header (:class:`!ClassName` in the
 example).
 
 
@@ -276,7 +276,7 @@ definition looked like this::
 then ``MyClass.i`` and ``MyClass.f`` are valid attribute references, returning
 an integer and a function object, respectively. Class attributes can also be
 assigned to, so you can change the value of ``MyClass.i`` by assignment.
-:attr:`__doc__` is also a valid attribute, returning the docstring belonging to
+:attr:`!__doc__` is also a valid attribute, returning the docstring belonging to
 the class: ``"A simple example class"``.
 
 Class *instantiation* uses function notation.  Just pretend that the class
@@ -291,20 +291,20 @@ variable ``x``.
 The instantiation operation ("calling" a class object) creates an empty object.
 Many classes like to create objects with instances customized to a specific
 initial state. Therefore a class may define a special method named
-:meth:`__init__`, like this::
+:meth:`~object.__init__`, like this::
 
    def __init__(self):
        self.data = []
 
-When a class defines an :meth:`__init__` method, class instantiation
-automatically invokes :meth:`__init__` for the newly created class instance.  So
+When a class defines an :meth:`~object.__init__` method, class instantiation
+automatically invokes :meth:`!__init__` for the newly created class instance.  So
 in this example, a new, initialized instance can be obtained by::
 
    x = MyClass()
 
-Of course, the :meth:`__init__` method may have arguments for greater
+Of course, the :meth:`~object.__init__` method may have arguments for greater
 flexibility.  In that case, arguments given to the class instantiation operator
-are passed on to :meth:`__init__`.  For example, ::
+are passed on to :meth:`!__init__`.  For example, ::
 
    >>> class Complex:
    ...     def __init__(self, realpart, imagpart):
@@ -328,7 +328,7 @@ attribute names: data attributes and methods.
 *data attributes* correspond to "instance variables" in Smalltalk, and to "data
 members" in C++.  Data attributes need not be declared; like local variables,
 they spring into existence when they are first assigned to.  For example, if
-``x`` is the instance of :class:`MyClass` created above, the following piece of
+``x`` is the instance of :class:`!MyClass` created above, the following piece of
 code will print the value ``16``, without leaving a trace::
 
    x.counter = 1
@@ -363,7 +363,7 @@ Usually, a method is called right after it is bound::
 
    x.f()
 
-In the :class:`MyClass` example, this will return the string ``'hello world'``.
+In the :class:`!MyClass` example, this will return the string ``'hello world'``.
 However, it is not necessary to call a method right away: ``x.f`` is a method
 object, and can be stored away and called at a later time.  For example::
 
@@ -375,7 +375,7 @@ will continue to print ``hello world`` until the end of time.
 
 What exactly happens when a method is called?  You may have noticed that
 ``x.f()`` was called without an argument above, even though the function
-definition for :meth:`f` specified an argument.  What happened to the argument?
+definition for :meth:`!f` specified an argument.  What happened to the argument?
 Surely Python raises an exception when a function that requires an argument is
 called without any --- even if the argument isn't actually used...
 
@@ -532,9 +532,9 @@ variable in the class is also ok.  For example::
 
        h = g
 
-Now ``f``, ``g`` and ``h`` are all attributes of class :class:`C` that refer to
+Now ``f``, ``g`` and ``h`` are all attributes of class :class:`!C` that refer to
 function objects, and consequently they are all methods of instances of
-:class:`C` --- ``h`` being exactly equivalent to ``g``.  Note that this practice
+:class:`!C` --- ``h`` being exactly equivalent to ``g``.  Note that this practice
 usually only serves to confuse the reader of a program.
 
 Methods may call other methods by using method attributes of the ``self``
@@ -581,7 +581,7 @@ this::
        .
        <statement-N>
 
-The name :class:`BaseClassName` must be defined in a
+The name :class:`!BaseClassName` must be defined in a
 namespace accessible from the scope containing the
 derived class definition.  In place of a base class name, other arbitrary
 expressions are also allowed.  This can be useful, for example, when the base
@@ -645,9 +645,9 @@ multiple base classes looks like this::
 For most purposes, in the simplest cases, you can think of the search for
 attributes inherited from a parent class as depth-first, left-to-right, not
 searching twice in the same class where there is an overlap in the hierarchy.
-Thus, if an attribute is not found in :class:`DerivedClassName`, it is searched
-for in :class:`Base1`, then (recursively) in the base classes of :class:`Base1`,
-and if it was not found there, it was searched for in :class:`Base2`, and so on.
+Thus, if an attribute is not found in :class:`!DerivedClassName`, it is searched
+for in :class:`!Base1`, then (recursively) in the base classes of :class:`!Base1`,
+and if it was not found there, it was searched for in :class:`!Base2`, and so on.
 
 In fact, it is slightly more complex than that; the method resolution order
 changes dynamically to support cooperative calls to :func:`super`.  This
@@ -760,7 +760,8 @@ is to use :mod:`dataclasses` for this purpose::
 A piece of Python code that expects a particular abstract data type can often be
 passed a class that emulates the methods of that data type instead.  For
 instance, if you have a function that formats some data from a file object, you
-can define a class with methods :meth:`read` and :meth:`!readline` that get the
+can define a class with methods :meth:`~io.TextIOBase.read` and
+:meth:`~io.TextIOBase.readline` that get the
 data from a string buffer instead, and pass it as an argument.
 
 .. (Unfortunately, this technique has its limitations: a class can't define
@@ -768,8 +769,10 @@ data from a string buffer instead, and pass it as an argument.
    or arithmetic operators, and assigning such a "pseudo-file" to sys.stdin will
    not cause the interpreter to read further input from it.)
 
-Instance method objects have attributes, too: ``m.__self__`` is the instance
-object with the method :meth:`m`, and ``m.__func__`` is the function object
+:ref:`Instance method objects <instance-methods>` have attributes, too:
+:attr:`m.__self__ <method.__self__>` is the instance
+object with the method :meth:`!m`, and :attr:`m.__func__ <method.__func__>` is
+the :ref:`function object <user-defined-funcs>`
 corresponding to the method.
 
 
@@ -818,9 +821,9 @@ using the :func:`next` built-in function; this example shows how it all works::
    StopIteration
 
 Having seen the mechanics behind the iterator protocol, it is easy to add
-iterator behavior to your classes.  Define an :meth:`__iter__` method which
+iterator behavior to your classes.  Define an :meth:`~container.__iter__` method which
 returns an object with a :meth:`~iterator.__next__` method.  If the class
-defines :meth:`__next__`, then :meth:`__iter__` can just return ``self``::
+defines :meth:`!__next__`, then :meth:`!__iter__` can just return ``self``::
 
    class Reverse:
        """Iterator for looping over a sequence backwards."""
@@ -879,7 +882,7 @@ easy to create::
 
 Anything that can be done with generators can also be done with class-based
 iterators as described in the previous section.  What makes generators so
-compact is that the :meth:`__iter__` and :meth:`~generator.__next__` methods
+compact is that the :meth:`~iterator.__iter__` and :meth:`~generator.__next__` methods
 are created automatically.
 
 Another key feature is that the local variables and execution state are
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index c9b3d982c31c9a..aa9caa101da40a 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -4,8 +4,8 @@
 More Control Flow Tools
 ***********************
 
-Besides the :keyword:`while` statement just introduced, Python uses the usual
-flow control statements known from other languages, with some twists.
+As well as the :keyword:`while` statement just introduced, Python uses a few more
+that we will encounter in this chapter.
 
 
 .. _tut-if:
@@ -163,14 +163,21 @@ arguments.  In chapter :ref:`tut-structures`, we will discuss in more detail abo
 :keyword:`!break` and :keyword:`!continue` Statements, and :keyword:`!else` Clauses on Loops
 ============================================================================================
 
-The :keyword:`break` statement, like in C, breaks out of the innermost enclosing
+The :keyword:`break` statement breaks out of the innermost enclosing
 :keyword:`for` or :keyword:`while` loop.
 
-Loop statements may have an :keyword:`!else` clause; it is executed when the loop
-terminates through exhaustion of the iterable (with :keyword:`for`) or when the
-condition becomes false (with :keyword:`while`), but not when the loop is
-terminated by a :keyword:`break` statement.  This is exemplified by the
-following loop, which searches for prime numbers::
+A :keyword:`!for` or :keyword:`!while` loop can include an :keyword:`!else` clause.
+
+In a :keyword:`for` loop, the :keyword:`!else` clause is executed
+after the loop reaches its final iteration.
+
+In a :keyword:`while` loop, it's executed after the loop's condition becomes false.
+
+In either kind of loop, the :keyword:`!else` clause is **not** executed
+if the loop was terminated by a :keyword:`break`.
+
+This is exemplified in the following :keyword:`!for` loop,
+which searches for prime numbers::
 
    >>> for n in range(2, 10):
    ...     for x in range(2, n):
@@ -307,8 +314,9 @@ you can use the class name followed by an argument list resembling a
 constructor, but with the ability to capture attributes into variables::
 
     class Point:
-        x: int
-        y: int
+        def __init__(self, x, y):
+            self.x = x
+            self.y = y
 
     def where_is(point):
         match point:
@@ -342,7 +350,13 @@ Dotted names (like ``foo.bar``), attribute names (the ``x=`` and ``y=`` above) o
 (recognized by the "(...)" next to them like ``Point`` above) are never assigned to.
 
 Patterns can be arbitrarily nested.  For example, if we have a short
-list of points, we could match it like this::
+list of Points, with ``__match_args__`` added, we could match it like this::
+
+    class Point:
+        __match_args__ = ('x', 'y')
+        def __init__(self, x, y):
+            self.x = x
+            self.y = y
 
     match points:
         case []:
@@ -520,7 +534,7 @@ This example, as usual, demonstrates some new Python features:
   Different types define different methods.  Methods of different types may have
   the same name without causing ambiguity.  (It is possible to define your own
   object types and methods, using *classes*, see :ref:`tut-classes`)
-  The method :meth:`append` shown in the example is defined for list objects; it
+  The method :meth:`!append` shown in the example is defined for list objects; it
   adds a new element at the end of the list.  In this example it is equivalent to
   ``result = result + [a]``, but more efficient.
 
@@ -1032,7 +1046,7 @@ Function Annotations
 information about the types used by user-defined functions (see :pep:`3107` and
 :pep:`484` for more information).
 
-:term:`Annotations <function annotation>` are stored in the :attr:`__annotations__`
+:term:`Annotations <function annotation>` are stored in the :attr:`!__annotations__`
 attribute of the function as a dictionary and have no effect on any other part of the
 function.  Parameter annotations are defined by a colon after the parameter name, followed
 by an expression evaluating to the value of the annotation.  Return annotations are
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index c8e89d9b79bddd..87614d082a1d4e 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -143,8 +143,8 @@ Using Lists as Stacks
 
 The list methods make it very easy to use a list as a stack, where the last
 element added is the first element retrieved ("last-in, first-out").  To add an
-item to the top of the stack, use :meth:`append`.  To retrieve an item from the
-top of the stack, use :meth:`pop` without an explicit index.  For example::
+item to the top of the stack, use :meth:`~list.append`.  To retrieve an item from the
+top of the stack, use :meth:`~list.pop` without an explicit index.  For example::
 
    >>> stack = [3, 4, 5]
    >>> stack.append(6)
@@ -341,7 +341,7 @@ The :keyword:`!del` statement
 =============================
 
 There is a way to remove an item from a list given its index instead of its
-value: the :keyword:`del` statement.  This differs from the :meth:`pop` method
+value: the :keyword:`del` statement.  This differs from the :meth:`~list.pop` method
 which returns a value.  The :keyword:`!del` statement can also be used to remove
 slices from a list or clear the entire list (which we did earlier by assignment
 of an empty list to the slice).  For example::
@@ -501,8 +501,8 @@ any immutable type; strings and numbers can always be keys.  Tuples can be used
 as keys if they contain only strings, numbers, or tuples; if a tuple contains
 any mutable object either directly or indirectly, it cannot be used as a key.
 You can't use lists as keys, since lists can be modified in place using index
-assignments, slice assignments, or methods like :meth:`append` and
-:meth:`extend`.
+assignments, slice assignments, or methods like :meth:`~list.append` and
+:meth:`~list.extend`.
 
 It is best to think of a dictionary as a set of *key: value* pairs,
 with the requirement that the keys are unique (within one dictionary). A pair of
@@ -567,7 +567,7 @@ Looping Techniques
 ==================
 
 When looping through dictionaries, the key and corresponding value can be
-retrieved at the same time using the :meth:`items` method. ::
+retrieved at the same time using the :meth:`~dict.items` method. ::
 
    >>> knights = {'gallahad': 'the pure', 'robin': 'the brave'}
    >>> for k, v in knights.items():
diff --git a/Doc/tutorial/errors.rst b/Doc/tutorial/errors.rst
index ca5dc3314c63b6..4058ebe8efdb42 100644
--- a/Doc/tutorial/errors.rst
+++ b/Doc/tutorial/errors.rst
@@ -108,8 +108,7 @@ The :keyword:`try` statement works as follows.
 
 * If an exception occurs which does not match the exception named in the *except
   clause*, it is passed on to outer :keyword:`try` statements; if no handler is
-  found, it is an *unhandled exception* and execution stops with a message as
-  shown above.
+  found, it is an *unhandled exception* and execution stops with an error message.
 
 A :keyword:`try` statement may have more than one *except clause*, to specify
 handlers for different exceptions.  At most one handler will be executed.
@@ -154,7 +153,7 @@ exception type.
 The *except clause* may specify a variable after the exception name.  The
 variable is bound to the exception instance which typically has an ``args``
 attribute that stores the arguments. For convenience, builtin exception
-types define :meth:`__str__` to print all the arguments without explicitly
+types define :meth:`~object.__str__` to print all the arguments without explicitly
 accessing ``.args``.  ::
 
    >>> try:
@@ -174,7 +173,7 @@ accessing ``.args``.  ::
    x = spam
    y = eggs
 
-The exception's :meth:`__str__` output is printed as the last part ('detail')
+The exception's :meth:`~object.__str__` output is printed as the last part ('detail')
 of the message for unhandled exceptions.
 
 :exc:`BaseException` is the common base class of all exceptions. One of its
@@ -535,11 +534,20 @@ of a certain type while letting all other exceptions propagate to
 other clauses and eventually to be reraised. ::
 
    >>> def f():
-   ...     raise ExceptionGroup("group1",
-   ...                          [OSError(1),
-   ...                           SystemError(2),
-   ...                           ExceptionGroup("group2",
-   ...                                          [OSError(3), RecursionError(4)])])
+   ...     raise ExceptionGroup(
+   ...         "group1",
+   ...         [
+   ...             OSError(1),
+   ...             SystemError(2),
+   ...             ExceptionGroup(
+   ...                 "group2",
+   ...                 [
+   ...                     OSError(3),
+   ...                     RecursionError(4)
+   ...                 ]
+   ...             )
+   ...         ]
+   ...     )
    ...
    >>> try:
    ...     f()
@@ -578,6 +586,8 @@ the following pattern::
    ...
 
 
+.. _tut-exception-notes:
+
 Enriching Exceptions with Notes
 ===============================
 
diff --git a/Doc/tutorial/floatingpoint.rst b/Doc/tutorial/floatingpoint.rst
index 306b1eba3c45b8..0795e2fef98830 100644
--- a/Doc/tutorial/floatingpoint.rst
+++ b/Doc/tutorial/floatingpoint.rst
@@ -137,7 +137,7 @@ the :func:`math.isclose` function can be useful for comparing inexact values:
    True
 
 Alternatively, the :func:`round` function can be used to compare rough
-approximations::
+approximations:
 
 .. doctest::
 
@@ -148,9 +148,9 @@ Binary floating-point arithmetic holds many surprises like this.  The problem
 with "0.1" is explained in precise detail below, in the "Representation Error"
 section.  See `Examples of Floating Point Problems
 <https://jvns.ca/blog/2023/01/13/examples-of-floating-point-problems/>`_ for
-a pleasant summary of how binary floating point works and the kinds of
+a pleasant summary of how binary floating-point works and the kinds of
 problems commonly encountered in practice.  Also see
-`The Perils of Floating Point <https://www.lahey.com/float.htm>`_
+`The Perils of Floating Point <http://www.indowsway.com/floatingpoint.htm>`_
 for a more complete account of other common surprises.
 
 As that says near the end, "there are no easy answers."  Still, don't be unduly
@@ -174,7 +174,7 @@ Another form of exact arithmetic is supported by the :mod:`fractions` module
 which implements arithmetic based on rational numbers (so the numbers like
 1/3 can be represented exactly).
 
-If you are a heavy user of floating point operations you should take a look
+If you are a heavy user of floating-point operations you should take a look
 at the NumPy package and many other packages for mathematical and
 statistical operations supplied by the SciPy project. See <https://scipy.org>.
 
@@ -268,12 +268,14 @@ decimal fractions cannot be represented exactly as binary (base 2) fractions.
 This is the chief reason why Python (or Perl, C, C++, Java, Fortran, and many
 others) often won't display the exact decimal number you expect.
 
-Why is that?  1/10 is not exactly representable as a binary fraction. Almost all
-machines today (November 2000) use IEEE-754 floating point arithmetic, and
-almost all platforms map Python floats to IEEE-754 "double precision".  754
-doubles contain 53 bits of precision, so on input the computer strives to
-convert 0.1 to the closest fraction it can of the form *J*/2**\ *N* where *J* is
-an integer containing exactly 53 bits.  Rewriting ::
+Why is that?  1/10 is not exactly representable as a binary fraction.  Since at
+least 2000, almost all machines use IEEE 754 binary floating-point arithmetic,
+and almost all platforms map Python floats to IEEE 754 binary64 "double
+precision" values.  IEEE 754 binary64 values contain 53 bits of precision, so
+on input the computer strives to convert 0.1 to the closest fraction it can of
+the form *J*/2**\ *N* where *J* is an integer containing exactly 53 bits.
+Rewriting
+::
 
    1 / 10 ~= J / (2**N)
 
@@ -308,7 +310,8 @@ by rounding up:
    >>> q+1
    7205759403792794
 
-Therefore the best possible approximation to 1/10 in 754 double precision is::
+Therefore the best possible approximation to 1/10 in IEEE 754 double precision
+is::
 
    7205759403792794 / 2 ** 56
 
@@ -321,7 +324,7 @@ if we had not rounded up, the quotient would have been a little bit smaller than
 1/10.  But in no case can it be *exactly* 1/10!
 
 So the computer never "sees" 1/10:  what it sees is the exact fraction given
-above, the best 754 double approximation it can get:
+above, the best IEEE 754 double approximation it can get:
 
 .. doctest::
 
diff --git a/Doc/tutorial/inputoutput.rst b/Doc/tutorial/inputoutput.rst
index f5cdd84cbadefe..fe9ca9ccb9c7e0 100644
--- a/Doc/tutorial/inputoutput.rst
+++ b/Doc/tutorial/inputoutput.rst
@@ -15,7 +15,7 @@ Fancier Output Formatting
 =========================
 
 So far we've encountered two ways of writing values: *expression statements* and
-the :func:`print` function.  (A third way is using the :meth:`write` method
+the :func:`print` function.  (A third way is using the :meth:`~io.TextIOBase.write` method
 of file objects; the standard output file can be referenced as ``sys.stdout``.
 See the Library Reference for more information on this.)
 
@@ -456,8 +456,8 @@ to the very file end with ``seek(0, 2)``) and the only valid *offset* values are
 those returned from the ``f.tell()``, or zero. Any other *offset* value produces
 undefined behaviour.
 
-File objects have some additional methods, such as :meth:`~file.isatty` and
-:meth:`~file.truncate` which are less frequently used; consult the Library
+File objects have some additional methods, such as :meth:`~io.IOBase.isatty` and
+:meth:`~io.IOBase.truncate` which are less frequently used; consult the Library
 Reference for a complete guide to file objects.
 
 
@@ -469,7 +469,7 @@ Saving structured data with :mod:`json`
 .. index:: pair: module; json
 
 Strings can easily be written to and read from a file.  Numbers take a bit more
-effort, since the :meth:`read` method only returns strings, which will have to
+effort, since the :meth:`~io.TextIOBase.read` method only returns strings, which will have to
 be passed to a function like :func:`int`, which takes a string like ``'123'``
 and returns its numeric value 123.  When you want to save more complex data
 types like nested lists and dictionaries, parsing and serializing by hand
diff --git a/Doc/tutorial/interactive.rst b/Doc/tutorial/interactive.rst
index c0eb1feec4eb4d..4e054c4e6c2c32 100644
--- a/Doc/tutorial/interactive.rst
+++ b/Doc/tutorial/interactive.rst
@@ -23,7 +23,7 @@ Python statement names, the current local variables, and the available
 module names.  For dotted expressions such as ``string.a``, it will evaluate
 the expression up to the final ``'.'`` and then suggest completions from
 the attributes of the resulting object.  Note that this may execute
-application-defined code if an object with a :meth:`__getattr__` method
+application-defined code if an object with a :meth:`~object.__getattr__` method
 is part of the expression.  The default configuration also saves your
 history into a file named :file:`.python_history` in your user directory.
 The history will be available again during the next interactive interpreter
@@ -51,4 +51,4 @@ bpython_.
 
 .. _GNU Readline: https://tiswww.case.edu/php/chet/readline/rltop.html
 .. _IPython: https://ipython.org/
-.. _bpython: https://www.bpython-interpreter.org/
+.. _bpython: https://bpython-interpreter.org/
diff --git a/Doc/tutorial/interpreter.rst b/Doc/tutorial/interpreter.rst
index b71c61089e6dc1..42ebf2b3d294a8 100644
--- a/Doc/tutorial/interpreter.rst
+++ b/Doc/tutorial/interpreter.rst
@@ -10,13 +10,13 @@ Using the Python Interpreter
 Invoking the Interpreter
 ========================
 
-The Python interpreter is usually installed as :file:`/usr/local/bin/python3.12`
+The Python interpreter is usually installed as :file:`/usr/local/bin/python3.13`
 on those machines where it is available; putting :file:`/usr/local/bin` in your
 Unix shell's search path makes it possible to start it by typing the command:
 
 .. code-block:: text
 
-   python3.12
+   python3.13
 
 to the shell. [#]_ Since the choice of the directory where the interpreter lives
 is an installation option, other places are possible; check with your local
@@ -24,7 +24,7 @@ Python guru or system administrator.  (E.g., :file:`/usr/local/python` is a
 popular alternative location.)
 
 On Windows machines where you have installed Python from the :ref:`Microsoft Store
-<windows-store>`, the :file:`python3.12` command will be available. If you have
+<windows-store>`, the :file:`python3.13` command will be available. If you have
 the :ref:`py.exe launcher <launcher>` installed, you can use the :file:`py`
 command. See :ref:`setting-envvars` for other ways to launch Python.
 
@@ -97,8 +97,8 @@ before printing the first prompt:
 
 .. code-block:: shell-session
 
-   $ python3.12
-   Python 3.12 (default, April 4 2022, 09:25:04)
+   $ python3.13
+   Python 3.13 (default, April 4 2023, 09:25:04)
    [GCC 10.2.0] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>>
diff --git a/Doc/tutorial/introduction.rst b/Doc/tutorial/introduction.rst
index ebc2e9187534b4..4536ab9486d39c 100644
--- a/Doc/tutorial/introduction.rst
+++ b/Doc/tutorial/introduction.rst
@@ -52,8 +52,8 @@ Numbers
 
 The interpreter acts as a simple calculator: you can type an expression at it
 and it will write the value.  Expression syntax is straightforward: the
-operators ``+``, ``-``, ``*`` and ``/`` work just like in most other languages
-(for example, Pascal or C); parentheses (``()``) can be used for grouping.
+operators ``+``, ``-``, ``*`` and ``/`` can be used to perform
+arithmetic; parentheses (``()``) can be used for grouping.
 For example::
 
    >>> 2 + 2
@@ -138,16 +138,25 @@ and uses the ``j`` or ``J`` suffix to indicate the imaginary part
 
 .. _tut-strings:
 
-Strings
--------
+Text
+----
 
-Besides numbers, Python can also manipulate strings, which can be expressed
-in several ways.  They can be enclosed in single quotes (``'...'``) or
-double quotes (``"..."``) with the same result [#]_.  ``\`` can be used
-to escape quotes::
+Python can manipulate text (represented by type :class:`str`, so-called
+"strings") as well as numbers.  This includes characters "``!``", words
+"``rabbit``", names "``Paris``", sentences "``Got your back.``", etc.
+"``Yay! :)``". They can be enclosed in single quotes (``'...'``) or double
+quotes (``"..."``) with the same result [#]_.
 
    >>> 'spam eggs'  # single quotes
    'spam eggs'
+   >>> "Paris rabbit got your back :)! Yay!"  # double quotes
+   'Paris rabbit got your back :)! Yay!'
+   >>> '1975'  # digits and numerals enclosed in quotes are also strings
+   '1975'
+
+To quote a quote, we need to "escape" it, by preceding it with ``\``.
+Alternatively, we can use the other type of quotation marks::
+
    >>> 'doesn\'t'  # use \' to escape the single quote...
    "doesn't"
    >>> "doesn't"  # ...or use double quotes instead
@@ -159,23 +168,14 @@ to escape quotes::
    >>> '"Isn\'t," they said.'
    '"Isn\'t," they said.'
 
-In the interactive interpreter, the output string is enclosed in quotes and
-special characters are escaped with backslashes.  While this might sometimes
-look different from the input (the enclosing quotes could change), the two
-strings are equivalent.  The string is enclosed in double quotes if
-the string contains a single quote and no double quotes, otherwise it is
-enclosed in single quotes.  The :func:`print` function produces a more
-readable output, by omitting the enclosing quotes and by printing escaped
-and special characters::
+In the Python shell, the string definition and output string can look
+different.  The :func:`print` function produces a more readable output, by
+omitting the enclosing quotes and by printing escaped and special characters::
 
-   >>> '"Isn\'t," they said.'
-   '"Isn\'t," they said.'
-   >>> print('"Isn\'t," they said.')
-   "Isn't," they said.
    >>> s = 'First line.\nSecond line.'  # \n means newline
-   >>> s  # without print(), \n is included in the output
+   >>> s  # without print(), special characters are included in the string
    'First line.\nSecond line.'
-   >>> print(s)  # with print(), \n produces a new line
+   >>> print(s)  # with print(), special characters are interpreted, so \n produces new line
    First line.
    Second line.
 
@@ -428,7 +428,7 @@ type, i.e. it is possible to change their content::
     [1, 8, 27, 64, 125]
 
 You can also add new items at the end of the list, by using
-the :meth:`~list.append` *method* (we will see more about methods later)::
+the :meth:`!list.append` *method* (we will see more about methods later)::
 
    >>> cubes.append(216)  # add the cube of 6
    >>> cubes.append(7 ** 3)  # and the cube of 7
@@ -480,7 +480,7 @@ First Steps Towards Programming
 
 Of course, we can use Python for more complicated tasks than adding two and two
 together.  For instance, we can write an initial sub-sequence of the
-`Fibonacci series <https://en.wikipedia.org/wiki/Fibonacci_number>`_
+`Fibonacci series <https://en.wikipedia.org/wiki/Fibonacci_sequence>`_
 as follows::
 
    >>> # Fibonacci series:
diff --git a/Doc/tutorial/modules.rst b/Doc/tutorial/modules.rst
index 3bd034bcc9703f..bf9e8e0b7b8066 100644
--- a/Doc/tutorial/modules.rst
+++ b/Doc/tutorial/modules.rst
@@ -183,7 +183,7 @@ The Module Search Path
 
 .. index:: triple: module; search; path
 
-When a module named :mod:`spam` is imported, the interpreter first searches for
+When a module named :mod:`!spam` is imported, the interpreter first searches for
 a built-in module with that name. These module names are listed in
 :data:`sys.builtin_module_names`. If not found, it then searches for a file
 named :file:`spam.py` in a list of directories given by the variable
@@ -389,7 +389,7 @@ Packages
 ========
 
 Packages are a way of structuring Python's module namespace by using "dotted
-module names".  For example, the module name :mod:`A.B` designates a submodule
+module names".  For example, the module name :mod:`!A.B` designates a submodule
 named ``B`` in a package named ``A``.  Just like the use of modules saves the
 authors of different modules from having to worry about each other's global
 variable names, the use of dotted module names saves the authors of multi-module
@@ -448,7 +448,7 @@ example::
 
    import sound.effects.echo
 
-This loads the submodule :mod:`sound.effects.echo`.  It must be referenced with
+This loads the submodule :mod:`!sound.effects.echo`.  It must be referenced with
 its full name. ::
 
    sound.effects.echo.echofilter(input, output, delay=0.7, atten=4)
@@ -457,7 +457,7 @@ An alternative way of importing the submodule is::
 
    from sound.effects import echo
 
-This also loads the submodule :mod:`echo`, and makes it available without its
+This also loads the submodule :mod:`!echo`, and makes it available without its
 package prefix, so it can be used as follows::
 
    echo.echofilter(input, output, delay=0.7, atten=4)
@@ -466,8 +466,8 @@ Yet another variation is to import the desired function or variable directly::
 
    from sound.effects.echo import echofilter
 
-Again, this loads the submodule :mod:`echo`, but this makes its function
-:func:`echofilter` directly available::
+Again, this loads the submodule :mod:`!echo`, but this makes its function
+:func:`!echofilter` directly available::
 
    echofilter(input, output, delay=0.7, atten=4)
 
@@ -510,11 +510,27 @@ code::
    __all__ = ["echo", "surround", "reverse"]
 
 This would mean that ``from sound.effects import *`` would import the three
-named submodules of the :mod:`sound.effects` package.
+named submodules of the :mod:`!sound.effects` package.
+
+Be aware that submodules might become shadowed by locally defined names. For
+example, if you added a ``reverse`` function to the
+:file:`sound/effects/__init__.py` file, the ``from sound.effects import *``
+would only import the two submodules ``echo`` and ``surround``, but *not* the
+``reverse`` submodule, because it is shadowed by the locally defined
+``reverse`` function::
+
+    __all__ = [
+        "echo",      # refers to the 'echo.py' file
+        "surround",  # refers to the 'surround.py' file
+        "reverse",   # !!! refers to the 'reverse' function now !!!
+    ]
+
+    def reverse(msg: str):  # <-- this name shadows the 'reverse.py' submodule
+        return msg[::-1]    #     in the case of a 'from sound.effects import *'
 
 If ``__all__`` is not defined, the statement ``from sound.effects import *``
-does *not* import all submodules from the package :mod:`sound.effects` into the
-current namespace; it only ensures that the package :mod:`sound.effects` has
+does *not* import all submodules from the package :mod:`!sound.effects` into the
+current namespace; it only ensures that the package :mod:`!sound.effects` has
 been imported (possibly running any initialization code in :file:`__init__.py`)
 and then imports whatever names are defined in the package.  This includes any
 names defined (and submodules explicitly loaded) by :file:`__init__.py`.  It
@@ -525,8 +541,8 @@ previous :keyword:`import` statements.  Consider this code::
    import sound.effects.surround
    from sound.effects import *
 
-In this example, the :mod:`echo` and :mod:`surround` modules are imported in the
-current namespace because they are defined in the :mod:`sound.effects` package
+In this example, the :mod:`!echo` and :mod:`!surround` modules are imported in the
+current namespace because they are defined in the :mod:`!sound.effects` package
 when the ``from...import`` statement is executed.  (This also works when
 ``__all__`` is defined.)
 
@@ -545,15 +561,15 @@ packages.
 Intra-package References
 ------------------------
 
-When packages are structured into subpackages (as with the :mod:`sound` package
+When packages are structured into subpackages (as with the :mod:`!sound` package
 in the example), you can use absolute imports to refer to submodules of siblings
-packages.  For example, if the module :mod:`sound.filters.vocoder` needs to use
-the :mod:`echo` module in the :mod:`sound.effects` package, it can use ``from
+packages.  For example, if the module :mod:`!sound.filters.vocoder` needs to use
+the :mod:`!echo` module in the :mod:`!sound.effects` package, it can use ``from
 sound.effects import echo``.
 
 You can also write relative imports, with the ``from module import name`` form
 of import statement.  These imports use leading dots to indicate the current and
-parent packages involved in the relative import.  From the :mod:`surround`
+parent packages involved in the relative import.  From the :mod:`!surround`
 module for example, you might use::
 
    from . import echo
diff --git a/Doc/tutorial/stdlib.rst b/Doc/tutorial/stdlib.rst
index 6bae279c5e9cde..63f4b5e1ce0207 100644
--- a/Doc/tutorial/stdlib.rst
+++ b/Doc/tutorial/stdlib.rst
@@ -153,7 +153,7 @@ The :mod:`random` module provides tools for making random selections::
    'apple'
    >>> random.sample(range(100), 10)   # sampling without replacement
    [30, 83, 16, 4, 8, 81, 41, 50, 18, 33]
-   >>> random.random()    # random float
+   >>> random.random()    # random float from the interval [0.0, 1.0)
    0.17970987693706186
    >>> random.randrange(6)    # random integer chosen from range(6)
    4
diff --git a/Doc/tutorial/venv.rst b/Doc/tutorial/venv.rst
index d1bba098d7d23b..a6dead2eac11f6 100644
--- a/Doc/tutorial/venv.rst
+++ b/Doc/tutorial/venv.rst
@@ -207,4 +207,6 @@ necessary packages with ``install -r``:
 ``pip`` has many more options.  Consult the :ref:`installing-index`
 guide for complete documentation for ``pip``.  When you've written
 a package and want to make it available on the Python Package Index,
-consult the :ref:`distributing-index` guide.
+consult the `Python packaging user guide`_.
+
+.. _Python Packaging User Guide: https://packaging.python.org/en/latest/tutorials/packaging-projects/
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index 9d4042ce5a7e8a..56235bf4c28c7c 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -59,7 +59,7 @@ all consecutive arguments will end up in :data:`sys.argv` -- note that the first
 element, subscript zero (``sys.argv[0]``), is a string reflecting the program's
 source.
 
-.. cmdoption:: -c <command>
+.. option:: -c <command>
 
    Execute the Python code in *command*.  *command* can be one or more
    statements separated by newlines, with significant leading whitespace as in
@@ -72,7 +72,7 @@ source.
 
    .. audit-event:: cpython.run_command command cmdoption-c
 
-.. cmdoption:: -m <module-name>
+.. option:: -m <module-name>
 
    Search :data:`sys.path` for the named module and execute its contents as
    the :mod:`__main__` module.
@@ -103,13 +103,13 @@ source.
 
    :option:`-I` option can  be used to run the script in isolated mode where
    :data:`sys.path` contains neither the current directory nor the user's
-   site-packages directory. All :envvar:`PYTHON*` environment variables are
+   site-packages directory. All ``PYTHON*`` environment variables are
    ignored, too.
 
    Many standard library modules contain code that is invoked on their execution
    as a script.  An example is the :mod:`timeit` module::
 
-       python -m timeit -s 'setup here' 'benchmarked code here'
+       python -m timeit -s "setup here" "benchmarked code here"
        python -m timeit -h # for details
 
    .. audit-event:: cpython.run_module module-name cmdoption-m
@@ -161,7 +161,7 @@ source.
 
    :option:`-I` option can  be used to run the script in isolated mode where
    :data:`sys.path` contains neither the script's directory nor the user's
-   site-packages directory. All :envvar:`PYTHON*` environment variables are
+   site-packages directory. All ``PYTHON*`` environment variables are
    ignored, too.
 
    .. audit-event:: cpython.run_file filename
@@ -188,35 +188,35 @@ automatically enabled, if available on your platform (see
 Generic options
 ~~~~~~~~~~~~~~~
 
-.. cmdoption:: -?
-               -h
-               --help
+.. option:: -?
+            -h
+            --help
 
    Print a short description of all command line options and corresponding
    environment variables and exit.
 
-.. cmdoption:: --help-env
+.. option:: --help-env
 
    Print a short description of Python-specific environment variables
    and exit.
 
    .. versionadded:: 3.11
 
-.. cmdoption:: --help-xoptions
+.. option:: --help-xoptions
 
    Print a description of implementation-specific :option:`-X` options
    and exit.
 
    .. versionadded:: 3.11
 
-.. cmdoption:: --help-all
+.. option:: --help-all
 
    Print complete usage information and exit.
 
    .. versionadded:: 3.11
 
-.. cmdoption:: -V
-               --version
+.. option:: -V
+            --version
 
    Print the Python version number and exit.  Example output could be:
 
@@ -240,7 +240,7 @@ Generic options
 Miscellaneous options
 ~~~~~~~~~~~~~~~~~~~~~
 
-.. cmdoption:: -b
+.. option:: -b
 
    Issue a warning when comparing :class:`bytes` or :class:`bytearray` with
    :class:`str` or :class:`bytes` with :class:`int`.  Issue an error when the
@@ -249,13 +249,13 @@ Miscellaneous options
    .. versionchanged:: 3.5
       Affects comparisons of :class:`bytes` with :class:`int`.
 
-.. cmdoption:: -B
+.. option:: -B
 
    If given, Python won't try to write ``.pyc`` files on the
    import of source modules.  See also :envvar:`PYTHONDONTWRITEBYTECODE`.
 
 
-.. cmdoption:: --check-hash-based-pycs default|always|never
+.. option:: --check-hash-based-pycs default|always|never
 
    Control the validation behavior of hash-based ``.pyc`` files. See
    :ref:`pyc-invalidation`. When set to ``default``, checked and unchecked
@@ -269,7 +269,7 @@ Miscellaneous options
    option.
 
 
-.. cmdoption:: -d
+.. option:: -d
 
    Turn on parser debugging output (for expert only).
    See also the :envvar:`PYTHONDEBUG` environment variable.
@@ -278,15 +278,15 @@ Miscellaneous options
    it's ignored.
 
 
-.. cmdoption:: -E
+.. option:: -E
 
-   Ignore all :envvar:`PYTHON*` environment variables, e.g.
+   Ignore all ``PYTHON*`` environment variables, e.g.
    :envvar:`PYTHONPATH` and :envvar:`PYTHONHOME`, that might be set.
 
    See also the :option:`-P` and :option:`-I` (isolated) options.
 
 
-.. cmdoption:: -i
+.. option:: -i
 
    When a script is passed as first argument or the :option:`-c` option is used,
    enter interactive mode after executing the script or the command, even when
@@ -297,20 +297,20 @@ Miscellaneous options
    raises an exception.  See also :envvar:`PYTHONINSPECT`.
 
 
-.. cmdoption:: -I
+.. option:: -I
 
    Run Python in isolated mode. This also implies :option:`-E`, :option:`-P`
    and :option:`-s` options.
 
    In isolated mode :data:`sys.path` contains neither the script's directory nor
-   the user's site-packages directory. All :envvar:`PYTHON*` environment
+   the user's site-packages directory. All ``PYTHON*`` environment
    variables are ignored, too. Further restrictions may be imposed to prevent
    the user from injecting malicious code.
 
    .. versionadded:: 3.4
 
 
-.. cmdoption:: -O
+.. option:: -O
 
    Remove assert statements and any code conditional on the value of
    :const:`__debug__`.  Augment the filename for compiled
@@ -321,7 +321,7 @@ Miscellaneous options
       Modify ``.pyc`` filenames according to :pep:`488`.
 
 
-.. cmdoption:: -OO
+.. option:: -OO
 
    Do :option:`-O` and also discard docstrings.  Augment the filename
    for compiled (:term:`bytecode`) files by adding ``.opt-2`` before the
@@ -331,7 +331,7 @@ Miscellaneous options
       Modify ``.pyc`` filenames according to :pep:`488`.
 
 
-.. cmdoption:: -P
+.. option:: -P
 
    Don't prepend a potentially unsafe path to :data:`sys.path`:
 
@@ -348,21 +348,21 @@ Miscellaneous options
    .. versionadded:: 3.11
 
 
-.. cmdoption:: -q
+.. option:: -q
 
    Don't display the copyright and version messages even in interactive mode.
 
    .. versionadded:: 3.2
 
 
-.. cmdoption:: -R
+.. option:: -R
 
    Turn on hash randomization. This option only has an effect if the
    :envvar:`PYTHONHASHSEED` environment variable is set to ``0``, since hash
    randomization is enabled by default.
 
    On previous versions of Python, this option turns on hash randomization,
-   so that the :meth:`__hash__` values of str and bytes objects
+   so that the :meth:`~object.__hash__` values of str and bytes objects
    are "salted" with an unpredictable random value.  Although they remain
    constant within an individual Python process, they are not predictable
    between repeated invocations of Python.
@@ -381,7 +381,7 @@ Miscellaneous options
    .. versionadded:: 3.2.3
 
 
-.. cmdoption:: -s
+.. option:: -s
 
    Don't add the :data:`user site-packages directory <site.USER_SITE>` to
    :data:`sys.path`.
@@ -391,7 +391,7 @@ Miscellaneous options
       :pep:`370` -- Per user site-packages directory
 
 
-.. cmdoption:: -S
+.. option:: -S
 
    Disable the import of the module :mod:`site` and the site-dependent
    manipulations of :data:`sys.path` that it entails.  Also disable these
@@ -399,7 +399,7 @@ Miscellaneous options
    :func:`site.main` if you want them to be triggered).
 
 
-.. cmdoption:: -u
+.. option:: -u
 
    Force the stdout and stderr streams to be unbuffered.  This option has no
    effect on the stdin stream.
@@ -410,7 +410,7 @@ Miscellaneous options
       The text layer of the stdout and stderr streams now is unbuffered.
 
 
-.. cmdoption:: -v
+.. option:: -v
 
    Print a message each time a module is initialized, showing the place
    (filename or built-in module) from which it is loaded.  When given twice
@@ -425,7 +425,7 @@ Miscellaneous options
 
 
 .. _using-on-warnings:
-.. cmdoption:: -W arg
+.. option:: -W arg
 
    Warning control. Python's warning machinery by default prints warning
    messages to :data:`sys.stderr`.
@@ -484,13 +484,13 @@ Miscellaneous options
    details.
 
 
-.. cmdoption:: -x
+.. option:: -x
 
    Skip the first line of the source, allowing use of non-Unix forms of
    ``#!cmd``.  This is intended for a DOS specific hack only.
 
 
-.. cmdoption:: -X
+.. option:: -X
 
    Reserved for various implementation-specific options.  CPython currently
    defines the following possible values:
@@ -535,17 +535,30 @@ Miscellaneous options
      location indicators when the interpreter displays tracebacks. See also
      :envvar:`PYTHONNODEBUGRANGES`.
    * ``-X frozen_modules`` determines whether or not frozen modules are
-     ignored by the import machinery.  A value of "on" means they get
-     imported and "off" means they are ignored.  The default is "on"
+     ignored by the import machinery.  A value of ``on`` means they get
+     imported and ``off`` means they are ignored.  The default is ``on``
      if this is an installed Python (the normal case).  If it's under
-     development (running from the source tree) then the default is "off".
-     Note that the "importlib_bootstrap" and "importlib_bootstrap_external"
-     frozen modules are always used, even if this flag is set to "off".
+     development (running from the source tree) then the default is ``off``.
+     Note that the :mod:`!importlib_bootstrap` and
+     :mod:`!importlib_bootstrap_external` frozen modules are always used, even
+     if this flag is set to ``off``. See also :envvar:`PYTHON_FROZEN_MODULES`.
    * ``-X perf`` enables support for the Linux ``perf`` profiler.
      When this option is provided, the ``perf`` profiler will be able to
      report Python calls. This option is only available on some platforms and
      will do nothing if is not supported on the current system. The default value
      is "off". See also :envvar:`PYTHONPERFSUPPORT` and :ref:`perf_profiling`.
+   * :samp:`-X cpu_count={n}` overrides :func:`os.cpu_count`,
+     :func:`os.process_cpu_count`, and :func:`multiprocessing.cpu_count`.
+     *n* must be greater than or equal to 1.
+     This option may be useful for users who need to limit CPU resources of a
+     container system. See also :envvar:`PYTHON_CPU_COUNT`.
+     If *n* is ``default``, nothing is overridden.
+   * :samp:`-X presite={package.module}` specifies a module that should be
+     imported before the :mod:`site` module is executed and before the
+     :mod:`__main__` module exists.  Therefore, the imported module isn't
+     :mod:`__main__`. This can be used to execute code early during Python
+     initialization. Python needs to be :ref:`built in debug mode <debug-build>`
+     for this option to exist.  See also :envvar:`PYTHON_PRESITE`.
 
    It also allows passing arbitrary values and retrieving them through the
    :data:`sys._xoptions` dictionary.
@@ -593,11 +606,38 @@ Miscellaneous options
    .. versionadded:: 3.12
       The ``-X perf`` option.
 
+   .. versionadded:: 3.13
+      The ``-X cpu_count`` option.
+
+   .. versionadded:: 3.13
+      The ``-X presite`` option.
+
+Controlling Color
+~~~~~~~~~~~~~~~~~
+
+The Python interpreter is configured by default to use colors to highlight
+output in certain situations such as when displaying tracebacks. This
+behavior can be controlled by setting different environment variables.
+
+Setting the environment variable ``TERM`` to ``dumb`` will disable color.
+
+If the environment variable ``FORCE_COLOR`` is set, then color will be
+enabled regardless of the value of TERM. This is useful on CI systems which
+aren’t terminals but can none-the-less display ANSI escape sequences.
+
+If the environment variable ``NO_COLOR`` is set, Python will disable all color
+in the output. This takes precedence over ``FORCE_COLOR``.
+
+All these environment variables are used also by other tools to control color
+output. To control the color output only in the Python interpreter, the
+:envvar:`PYTHON_COLORS` environment variable can be used. This variable takes
+precedence over ``NO_COLOR``, which in turn takes precedence over
+``FORCE_COLOR``.
 
 Options you shouldn't use
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
-.. cmdoption:: -J
+.. option:: -J
 
    Reserved for use by Jython_.
 
@@ -811,8 +851,8 @@ conflict.
 
    Defines the :data:`user base directory <site.USER_BASE>`, which is used to
    compute the path of the :data:`user site-packages directory <site.USER_SITE>`
-   and :ref:`Distutils installation paths <inst-alt-install-user>` for
-   ``python setup.py install --user``.
+   and :ref:`installation paths <sysconfig-user-scheme>` for
+   ``python -m pip install --user``.
 
    .. seealso::
 
@@ -851,9 +891,10 @@ conflict.
 
    If this environment variable is set to a non-empty string,
    :func:`faulthandler.enable` is called at startup: install a handler for
-   :const:`SIGSEGV`, :const:`SIGFPE`, :const:`SIGABRT`, :const:`SIGBUS` and
-   :const:`SIGILL` signals to dump the Python traceback.  This is equivalent to
-   :option:`-X` ``faulthandler`` option.
+   :const:`~signal.SIGSEGV`, :const:`~signal.SIGFPE`,
+   :const:`~signal.SIGABRT`, :const:`~signal.SIGBUS` and
+   :const:`~signal.SIGILL` signals to dump the Python traceback.
+   This is equivalent to :option:`-X` ``faulthandler`` option.
 
    .. versionadded:: 3.3
 
@@ -897,11 +938,14 @@ conflict.
    * ``default``: use the :ref:`default memory allocators
      <default-memory-allocators>`.
    * ``malloc``: use the :c:func:`malloc` function of the C library
-     for all domains (:c:data:`PYMEM_DOMAIN_RAW`, :c:data:`PYMEM_DOMAIN_MEM`,
-     :c:data:`PYMEM_DOMAIN_OBJ`).
+     for all domains (:c:macro:`PYMEM_DOMAIN_RAW`, :c:macro:`PYMEM_DOMAIN_MEM`,
+     :c:macro:`PYMEM_DOMAIN_OBJ`).
    * ``pymalloc``: use the :ref:`pymalloc allocator <pymalloc>` for
-     :c:data:`PYMEM_DOMAIN_MEM` and :c:data:`PYMEM_DOMAIN_OBJ` domains and use
-     the :c:func:`malloc` function for the :c:data:`PYMEM_DOMAIN_RAW` domain.
+     :c:macro:`PYMEM_DOMAIN_MEM` and :c:macro:`PYMEM_DOMAIN_OBJ` domains and use
+     the :c:func:`malloc` function for the :c:macro:`PYMEM_DOMAIN_RAW` domain.
+   * ``mimalloc``: use the :ref:`mimalloc allocator <mimalloc>` for
+     :c:macro:`PYMEM_DOMAIN_MEM` and :c:macro:`PYMEM_DOMAIN_OBJ` domains and use
+     the :c:func:`malloc` function for the :c:macro:`PYMEM_DOMAIN_RAW` domain.
 
    Install :ref:`debug hooks <pymem-debug-hooks>`:
 
@@ -909,6 +953,7 @@ conflict.
      allocators <default-memory-allocators>`.
    * ``malloc_debug``: same as ``malloc`` but also install debug hooks.
    * ``pymalloc_debug``: same as ``pymalloc`` but also install debug hooks.
+   * ``mimalloc_debug``: same as ``mimalloc`` but also install debug hooks.
 
    .. versionchanged:: 3.7
       Added the ``"default"`` allocator.
@@ -1063,6 +1108,35 @@ conflict.
 
    .. versionadded:: 3.12
 
+.. envvar:: PYTHON_CPU_COUNT
+
+   If this variable is set to a positive integer, it overrides the return
+   values of :func:`os.cpu_count` and :func:`os.process_cpu_count`.
+
+   See also the :option:`-X cpu_count <-X>` command-line option.
+
+   .. versionadded:: 3.13
+
+.. envvar:: PYTHON_FROZEN_MODULES
+
+   If this variable is set to ``on`` or ``off``, it determines whether or not
+   frozen modules are ignored by the import machinery.  A value of ``on`` means
+   they get imported and ``off`` means they are ignored.  The default is ``on``
+   for non-debug builds (the normal case) and ``off`` for debug builds.
+   Note that the :mod:`!importlib_bootstrap` and
+   :mod:`!importlib_bootstrap_external` frozen modules are always used, even
+   if this flag is set to ``off``.
+
+   See also the :option:`-X frozen_modules <-X>` command-line option.
+
+   .. versionadded:: 3.13
+
+.. envvar:: PYTHON_COLORS
+
+   If this variable is set to ``1``, the interpreter will colorize various kinds
+   of output. Setting it to ``0`` deactivates this behavior.
+
+   .. versionadded:: 3.13
 
 Debug-mode variables
 ~~~~~~~~~~~~~~~~~~~~
@@ -1072,13 +1146,33 @@ Debug-mode variables
    If set, Python will dump objects and reference counts still alive after
    shutting down the interpreter.
 
-   Need Python configured with the :option:`--with-trace-refs` build option.
+   Needs Python configured with the :option:`--with-trace-refs` build option.
 
-.. envvar:: PYTHONDUMPREFSFILE=FILENAME
+.. envvar:: PYTHONDUMPREFSFILE
 
    If set, Python will dump objects and reference counts still alive
-   after shutting down the interpreter into a file called *FILENAME*.
+   after shutting down the interpreter into a file under the path given
+   as the value to this environment variable.
 
-   Need Python configured with the :option:`--with-trace-refs` build option.
+   Needs Python configured with the :option:`--with-trace-refs` build option.
 
    .. versionadded:: 3.11
+
+.. envvar:: PYTHON_PRESITE
+
+   If this variable is set to a module, that module will be imported
+   early in the interpreter lifecycle, before the :mod:`site` module is
+   executed, and before the :mod:`__main__` module is created.
+   Therefore, the imported module is not treated as :mod:`__main__`.
+
+   This can be used to execute code early during Python initialization.
+
+   To import a submodule, use ``package.module`` as the value, like in
+   an import statement.
+
+   See also the :option:`-X presite <-X>` command-line option,
+   which takes precedence over this variable.
+
+   Needs Python configured with the :option:`--with-pydebug` build option.
+
+   .. versionadded:: 3.13
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
index ce858ab2c8d79e..cb7eda42fe3fad 100644
--- a/Doc/using/configure.rst
+++ b/Doc/using/configure.rst
@@ -5,29 +5,42 @@ Configure Python
 Build Requirements
 ==================
 
-Features required to build CPython:
+Features and minimum versions required to build CPython:
 
 * A `C11 <https://en.cppreference.com/w/c/11>`_ compiler. `Optional C11
   features
   <https://en.wikipedia.org/wiki/C11_(C_standard_revision)#Optional_features>`_
   are not required.
 
+* On Windows, Microsoft Visual Studio 2017 or later is required.
+
 * Support for `IEEE 754 <https://en.wikipedia.org/wiki/IEEE_754>`_ floating
   point numbers and `floating point Not-a-Number (NaN)
   <https://en.wikipedia.org/wiki/NaN#Floating_point>`_.
 
 * Support for threads.
 
-* OpenSSL 1.1.1 or newer for the :mod:`ssl` and :mod:`hashlib` modules.
+* OpenSSL 1.1.1 is the minimum version and OpenSSL 3.0.9 is the recommended
+  minimum version for the :mod:`ssl` and :mod:`hashlib` extension modules.
 
-* On Windows, Microsoft Visual Studio 2017 or later is required.
+* SQLite 3.15.2 for the :mod:`sqlite3` extension module.
+
+* Tcl/Tk 8.5.12 for the :mod:`tkinter` module.
+
+* Autoconf 2.71 and aclocal 1.16.4 are required to regenerate the
+  :file:`configure` script.
+
+.. versionchanged:: 3.13:
+   Autoconf 2.71, aclocal 1.16.4 and SQLite 3.15.2 are now required.
 
 .. versionchanged:: 3.11
    C11 compiler, IEEE 754 and NaN support are now required.
    On Windows, Visual Studio 2017 or later is required.
+   Tcl/Tk version 8.5.12 is now required for the :mod:`tkinter` module.
 
 .. versionchanged:: 3.10
    OpenSSL 1.1.1 is now required.
+   Require SQLite 3.7.15.
 
 .. versionchanged:: 3.7
    Thread support and OpenSSL 1.0.2 are now required.
@@ -37,18 +50,52 @@ Features required to build CPython:
    inline`` functions.
 
 .. versionchanged:: 3.5
-   On Windows, Visual Studio 2015 or later is required.
+   On Windows, Visual Studio 2015 or later is now required.
+   Tcl/Tk version 8.4 is now required.
+
+.. versionchanged:: 3.1
+   Tcl/Tk version 8.3.1 is now required.
 
 See also :pep:`7` "Style Guide for C Code" and :pep:`11` "CPython platform
 support".
 
 
+Generated files
+===============
+
+To reduce build dependencies, Python source code contains multiple generated
+files. Commands to regenerate all generated files::
+
+    make regen-all
+    make regen-stdlib-module-names
+    make regen-limited-abi
+    make regen-configure
+
+The ``Makefile.pre.in`` file documents generated files, their inputs, and tools used
+to regenerate them. Search for ``regen-*`` make targets.
+
+configure script
+----------------
+
+The ``make regen-configure`` command regenerates the ``aclocal.m4`` file and
+the ``configure`` script using the ``Tools/build/regen-configure.sh`` shell
+script which uses an Ubuntu container to get the same tools versions and have a
+reproducible output.
+
+The container is optional, the following command can be run locally::
+
+    autoreconf -ivf -Werror
+
+The generated files can change depending on the exact ``autoconf-archive``,
+``aclocal`` and ``pkg-config`` versions.
+
+
 .. _configure-options:
 
 Configure Options
 =================
 
-List all ``./configure`` script options using::
+List all :file:`configure` script options using::
 
     ./configure --help
 
@@ -57,22 +104,22 @@ See also the :file:`Misc/SpecialBuilds.txt` in the Python source distribution.
 General Options
 ---------------
 
-.. cmdoption:: --enable-loadable-sqlite-extensions
+.. option:: --enable-loadable-sqlite-extensions
 
-   Support loadable extensions in the :mod:`_sqlite` extension module (default
-   is no).
+   Support loadable extensions in the :mod:`!_sqlite` extension module (default
+   is no) of the :mod:`sqlite3` module.
 
    See the :meth:`sqlite3.Connection.enable_load_extension` method of the
    :mod:`sqlite3` module.
 
    .. versionadded:: 3.6
 
-.. cmdoption:: --disable-ipv6
+.. option:: --disable-ipv6
 
    Disable IPv6 support (enabled by default if supported), see the
    :mod:`socket` module.
 
-.. cmdoption:: --enable-big-digits=[15|30]
+.. option:: --enable-big-digits=[15|30]
 
    Define the size in bits of Python :class:`int` digits: 15 or 30 bits.
 
@@ -82,7 +129,7 @@ General Options
 
    See :data:`sys.int_info.bits_per_digit <sys.int_info>`.
 
-.. cmdoption:: --with-suffix=SUFFIX
+.. option:: --with-suffix=SUFFIX
 
    Set the Python executable suffix to *SUFFIX*.
 
@@ -95,9 +142,9 @@ General Options
       The default suffix on WASM platform is one of ``.js``, ``.html``
       or ``.wasm``.
 
-.. cmdoption:: --with-tzpath=<list of absolute paths separated by pathsep>
+.. option:: --with-tzpath=<list of absolute paths separated by pathsep>
 
-   Select the default time zone search path for :data:`zoneinfo.TZPATH`.
+   Select the default time zone search path for :const:`zoneinfo.TZPATH`.
    See the :ref:`Compile-time configuration
    <zoneinfo_data_compile_time_config>` of the :mod:`zoneinfo` module.
 
@@ -107,16 +154,16 @@ General Options
 
    .. versionadded:: 3.9
 
-.. cmdoption:: --without-decimal-contextvar
+.. option:: --without-decimal-contextvar
 
    Build the ``_decimal`` extension module using a thread-local context rather
    than a coroutine-local context (default), see the :mod:`decimal` module.
 
-   See :data:`decimal.HAVE_CONTEXTVAR` and the :mod:`contextvars` module.
+   See :const:`decimal.HAVE_CONTEXTVAR` and the :mod:`contextvars` module.
 
    .. versionadded:: 3.9
 
-.. cmdoption:: --with-dbmliborder=<list of backend names>
+.. option:: --with-dbmliborder=<list of backend names>
 
    Override order to check db backends for the :mod:`dbm` module
 
@@ -126,7 +173,7 @@ General Options
    * ``gdbm``;
    * ``bdb``.
 
-.. cmdoption:: --without-c-locale-coercion
+.. option:: --without-c-locale-coercion
 
    Disable C locale coercion to a UTF-8 based locale (enabled by default).
 
@@ -134,13 +181,13 @@ General Options
 
    See :envvar:`PYTHONCOERCECLOCALE` and the :pep:`538`.
 
-.. cmdoption:: --without-freelists
+.. option:: --without-freelists
 
    Disable all freelists except the empty tuple singleton.
 
    .. versionadded:: 3.11
 
-.. cmdoption:: --with-platlibdir=DIRNAME
+.. option:: --with-platlibdir=DIRNAME
 
    Python library directory name (default is ``lib``).
 
@@ -150,7 +197,7 @@ General Options
 
    .. versionadded:: 3.9
 
-.. cmdoption:: --with-wheel-pkg-dir=PATH
+.. option:: --with-wheel-pkg-dir=PATH
 
    Directory of wheel packages used by the :mod:`ensurepip` module
    (none by default).
@@ -158,11 +205,11 @@ General Options
    Some Linux distribution packaging policies recommend against bundling
    dependencies. For example, Fedora installs wheel packages in the
    ``/usr/share/python-wheels/`` directory and don't install the
-   :mod:`ensurepip._bundled` package.
+   :mod:`!ensurepip._bundled` package.
 
    .. versionadded:: 3.10
 
-.. cmdoption:: --with-pkg-config=[check|yes|no]
+.. option:: --with-pkg-config=[check|yes|no]
 
    Whether configure should use :program:`pkg-config` to detect build
    dependencies.
@@ -173,22 +220,221 @@ General Options
 
    .. versionadded:: 3.11
 
-.. cmdoption:: --enable-pystats
+.. option:: --enable-pystats
+
+   Turn on internal Python performance statistics gathering.
+
+   By default, statistics gathering is off. Use ``python3 -X pystats`` command
+   or set ``PYTHONSTATS=1`` environment variable to turn on statistics
+   gathering at Python startup.
+
+   At Python exit, dump statistics if statistics gathering was on and not
+   cleared.
+
+   Effects:
+
+   * Add :option:`-X pystats <-X>` command line option.
+   * Add :envvar:`!PYTHONSTATS` environment variable.
+   * Define the ``Py_STATS`` macro.
+   * Add functions to the :mod:`sys` module:
 
-   Turn on internal statistics gathering.
+     * :func:`!sys._stats_on`: Turns on statistics gathering.
+     * :func:`!sys._stats_off`: Turns off statistics gathering.
+     * :func:`!sys._stats_clear`: Clears the statistics.
+     * :func:`!sys._stats_dump`: Dump statistics to file, and clears the statistics.
 
    The statistics will be dumped to a arbitrary (probably unique) file in
-   ``/tmp/py_stats/``, or ``C:\temp\py_stats\`` on Windows. If that directory
-   does not exist, results will be printed on stdout.
+   ``/tmp/py_stats/`` (Unix) or ``C:\temp\py_stats\`` (Windows). If that
+   directory does not exist, results will be printed on stderr.
 
    Use ``Tools/scripts/summarize_stats.py`` to read the stats.
 
+   Statistics:
+
+   * Opcode:
+
+     * Specialization: success, failure, hit, deferred, miss, deopt, failures;
+     * Execution count;
+     * Pair count.
+
+   * Call:
+
+     * Inlined Python calls;
+     * PyEval calls;
+     * Frames pushed;
+     * Frame object created;
+     * Eval calls: vector, generator, legacy, function VECTORCALL, build class,
+       slot, function "ex", API, method.
+
+   * Object:
+
+     * incref and decref;
+     * interpreter incref and decref;
+     * allocations: all, 512 bytes, 4 kiB, big;
+     * free;
+     * to/from free lists;
+     * dictionary materialized/dematerialized;
+     * type cache;
+     * optimization attemps;
+     * optimization traces created/executed;
+     * uops executed.
+
+   * Garbage collector:
+
+     * Garbage collections;
+     * Objects visited;
+     * Objects collected.
+
    .. versionadded:: 3.11
 
+.. _free-threading-build:
+
+.. option:: --disable-gil
+
+   Enables **experimental** support for running Python without the
+   :term:`global interpreter lock` (GIL): free threading build.
+
+   Defines the ``Py_GIL_DISABLED`` macro and adds ``"t"`` to
+   :data:`sys.abiflags`.
+
+   See :pep:`703` "Making the Global Interpreter Lock Optional in CPython".
+
+   .. versionadded:: 3.13
+
+.. option:: PKG_CONFIG
+
+   Path to ``pkg-config`` utility.
+
+.. option:: PKG_CONFIG_LIBDIR
+.. option:: PKG_CONFIG_PATH
+
+   ``pkg-config`` options.
+
+
+C compiler options
+------------------
+
+.. option:: CC
+
+   C compiler command.
+
+.. option:: CFLAGS
+
+   C compiler flags.
+
+.. option:: CPP
+
+   C preprocessor command.
+
+.. option:: CPPFLAGS
+
+   C preprocessor flags, e.g. :samp:`-I{include_dir}`.
+
+
+Linker options
+--------------
+
+.. option:: LDFLAGS
+
+   Linker flags, e.g. :samp:`-L{library_directory}`.
+
+.. option:: LIBS
+
+   Libraries to pass to the linker, e.g. :samp:`-l{library}`.
+
+.. option:: MACHDEP
+
+   Name for machine-dependent library files.
+
+
+Options for third-party dependencies
+------------------------------------
+
+.. versionadded:: 3.11
+
+.. option:: BZIP2_CFLAGS
+.. option:: BZIP2_LIBS
+
+   C compiler and linker flags to link Python to ``libbz2``, used by :mod:`bz2`
+   module, overriding ``pkg-config``.
+
+.. option:: CURSES_CFLAGS
+.. option:: CURSES_LIBS
+
+   C compiler and linker flags for ``libncurses`` or ``libncursesw``, used by
+   :mod:`curses` module, overriding ``pkg-config``.
+
+.. option:: GDBM_CFLAGS
+.. option:: GDBM_LIBS
+
+   C compiler and linker flags for ``gdbm``.
+
+.. option:: LIBB2_CFLAGS
+.. option:: LIBB2_LIBS
+
+   C compiler and linker flags for ``libb2`` (:ref:`BLAKE2 <hashlib-blake2>`),
+   used by :mod:`hashlib` module, overriding ``pkg-config``.
+
+.. option:: LIBEDIT_CFLAGS
+.. option:: LIBEDIT_LIBS
+
+   C compiler and linker flags for ``libedit``, used by :mod:`readline` module,
+   overriding ``pkg-config``.
+
+.. option:: LIBFFI_CFLAGS
+.. option:: LIBFFI_LIBS
+
+   C compiler and linker flags for ``libffi``, used by :mod:`ctypes` module,
+   overriding ``pkg-config``.
+
+.. option:: LIBLZMA_CFLAGS
+.. option:: LIBLZMA_LIBS
+
+   C compiler and linker flags for ``liblzma``, used by :mod:`lzma` module,
+   overriding ``pkg-config``.
+
+.. option:: LIBREADLINE_CFLAGS
+.. option:: LIBREADLINE_LIBS
+
+   C compiler and linker flags for ``libreadline``, used by :mod:`readline`
+   module, overriding ``pkg-config``.
+
+.. option:: LIBSQLITE3_CFLAGS
+.. option:: LIBSQLITE3_LIBS
+
+   C compiler and linker flags for ``libsqlite3``, used by :mod:`sqlite3`
+   module, overriding ``pkg-config``.
+
+.. option:: LIBUUID_CFLAGS
+.. option:: LIBUUID_LIBS
+
+   C compiler and linker flags for ``libuuid``, used by :mod:`uuid` module,
+   overriding ``pkg-config``.
+
+.. option:: PANEL_CFLAGS
+.. option:: PANEL_LIBS
+
+   C compiler and Linker flags for PANEL, overriding ``pkg-config``.
+
+   C compiler and linker flags for ``libpanel`` or ``libpanelw``, used by
+   :mod:`curses.panel` module, overriding ``pkg-config``.
+
+.. option:: TCLTK_CFLAGS
+.. option:: TCLTK_LIBS
+
+   C compiler and linker flags for TCLTK, overriding ``pkg-config``.
+
+.. option:: ZLIB_CFLAGS
+.. option:: ZLIB_LIBS
+
+   C compiler and linker flags for ``libzlib``, used by :mod:`gzip` module,
+   overriding ``pkg-config``.
+
+
 WebAssembly Options
 -------------------
 
-.. cmdoption:: --with-emscripten-target=[browser|node]
+.. option:: --with-emscripten-target=[browser|node]
 
    Set build flavor for ``wasm32-emscripten``.
 
@@ -197,7 +443,7 @@ WebAssembly Options
 
    .. versionadded:: 3.11
 
-.. cmdoption:: --enable-wasm-dynamic-linking
+.. option:: --enable-wasm-dynamic-linking
 
    Turn on dynamic linking support for WASM.
 
@@ -206,7 +452,7 @@ WebAssembly Options
 
    .. versionadded:: 3.11
 
-.. cmdoption:: --enable-wasm-pthreads
+.. option:: --enable-wasm-pthreads
 
    Turn on pthreads support for WASM.
 
@@ -216,30 +462,30 @@ WebAssembly Options
 Install Options
 ---------------
 
-.. cmdoption:: --prefix=PREFIX
+.. option:: --prefix=PREFIX
 
    Install architecture-independent files in PREFIX. On Unix, it
    defaults to :file:`/usr/local`.
 
-   This value can be retrived at runtime using :data:`sys.prefix`.
+   This value can be retrieved at runtime using :data:`sys.prefix`.
 
    As an example, one can use ``--prefix="$HOME/.local/"`` to install
    a Python in its home directory.
 
-.. cmdoption:: --exec-prefix=EPREFIX
+.. option:: --exec-prefix=EPREFIX
 
    Install architecture-dependent files in EPREFIX, defaults to :option:`--prefix`.
 
-   This value can be retrived at runtime using :data:`sys.exec_prefix`.
+   This value can be retrieved at runtime using :data:`sys.exec_prefix`.
 
-.. cmdoption:: --disable-test-modules
+.. option:: --disable-test-modules
 
    Don't build nor install test modules, like the :mod:`test` package or the
-   :mod:`_testcapi` extension module (built and installed by default).
+   :mod:`!_testcapi` extension module (built and installed by default).
 
    .. versionadded:: 3.10
 
-.. cmdoption:: --with-ensurepip=[upgrade|install|no]
+.. option:: --with-ensurepip=[upgrade|install|no]
 
    Select the :mod:`ensurepip` command run on Python installation:
 
@@ -258,7 +504,7 @@ Configuring Python using ``--enable-optimizations --with-lto`` (PGO + LTO) is
 recommended for best performance. The experimental ``--enable-bolt`` flag can
 also be used to improve performance.
 
-.. cmdoption:: --enable-optimizations
+.. option:: --enable-optimizations
 
    Enable Profile Guided Optimization (PGO) using :envvar:`PROFILE_TASK`
    (disabled by default).
@@ -284,7 +530,10 @@ also be used to improve performance.
 
    .. versionadded:: 3.8
 
-.. cmdoption:: --with-lto=[full|thin|no|yes]
+   .. versionchanged:: 3.13
+      Task failure is no longer ignored silently.
+
+.. option:: --with-lto=[full|thin|no|yes]
 
    Enable Link Time Optimization (LTO) in any build (disabled by default).
 
@@ -299,7 +548,7 @@ also be used to improve performance.
    .. versionchanged:: 3.12
       Use ThinLTO as the default optimization policy on Clang if the compiler accepts the flag.
 
-.. cmdoption:: --enable-bolt
+.. option:: --enable-bolt
 
    Enable usage of the `BOLT post-link binary optimizer
    <https://github.com/llvm/llvm-project/tree/main/bolt>`_ (disabled by
@@ -314,22 +563,49 @@ also be used to improve performance.
    is dependent on a combination of the build environment + the other
    optimization configure args + the CPU architecture, and not all combinations
    are supported.
+   BOLT versions before LLVM 16 are known to crash BOLT under some scenarios.
+   Use of LLVM 16 or newer for BOLT optimization is strongly encouraged.
+
+   The :envvar:`!BOLT_INSTRUMENT_FLAGS` and :envvar:`!BOLT_APPLY_FLAGS`
+   :program:`configure` variables can be defined to override the default set of
+   arguments for :program:`llvm-bolt` to instrument and apply BOLT data to
+   binaries, respectively.
 
    .. versionadded:: 3.12
 
-.. cmdoption:: --with-computed-gotos
+.. option:: BOLT_APPLY_FLAGS
+
+   Arguments to ``llvm-bolt`` when creating a `BOLT optimized binary
+   <https://github.com/facebookarchive/BOLT>`_.
+
+   .. versionadded:: 3.12
+
+.. option:: BOLT_INSTRUMENT_FLAGS
+
+   Arguments to ``llvm-bolt`` when instrumenting binaries.
+
+   .. versionadded:: 3.12
+
+.. option:: --with-computed-gotos
 
    Enable computed gotos in evaluation loop (enabled by default on supported
    compilers).
 
-.. cmdoption:: --without-pymalloc
+.. option:: --without-mimalloc
+
+   Disable the fast mimalloc allocator :ref:`mimalloc <mimalloc>`
+   (enabled by default).
+
+   See also :envvar:`PYTHONMALLOC` environment variable.
+
+.. option:: --without-pymalloc
 
    Disable the specialized Python memory allocator :ref:`pymalloc <pymalloc>`
    (enabled by default).
 
    See also :envvar:`PYTHONMALLOC` environment variable.
 
-.. cmdoption:: --without-doc-strings
+.. option:: --without-doc-strings
 
    Disable static documentation strings to reduce the memory footprint (enabled
    by default). Documentation strings defined in Python are not affected.
@@ -338,11 +614,11 @@ also be used to improve performance.
 
    See the ``PyDoc_STRVAR()`` macro.
 
-.. cmdoption:: --enable-profiling
+.. option:: --enable-profiling
 
    Enable C-level code profiling with ``gprof`` (disabled by default).
 
-.. cmdoption:: --with-strict-overflow
+.. option:: --with-strict-overflow
 
    Add ``-fstrict-overflow`` to the C compiler flags (by default we add
    ``-fno-strict-overflow`` instead).
@@ -361,7 +637,7 @@ Effects of a debug build:
 * Display all warnings by default: the list of default warning filters is empty
   in the :mod:`warnings` module.
 * Add ``d`` to :data:`sys.abiflags`.
-* Add :func:`sys.gettotalrefcount` function.
+* Add :func:`!sys.gettotalrefcount` function.
 * Add :option:`-X showrefcount <-X>` command line option.
 * Add :option:`-d` command line option and :envvar:`PYTHONDEBUG` environment
   variable to debug the parser.
@@ -383,7 +659,7 @@ Effects of a debug build:
   * Check that deallocator functions don't change the current exception.
   * The garbage collector (:func:`gc.collect` function) runs some basic checks
     on objects consistency.
-  * The :c:macro:`Py_SAFE_DOWNCAST()` macro checks for integer underflow and
+  * The :c:macro:`!Py_SAFE_DOWNCAST()` macro checks for integer underflow and
     overflow when downcasting from wide types to narrow types.
 
 See also the :ref:`Python Development Mode <devmode>` and the
@@ -392,34 +668,39 @@ See also the :ref:`Python Development Mode <devmode>` and the
 .. versionchanged:: 3.8
    Release builds and debug builds are now ABI compatible: defining the
    ``Py_DEBUG`` macro no longer implies the ``Py_TRACE_REFS`` macro (see the
-   :option:`--with-trace-refs` option), which introduces the only ABI
-   incompatibility.
+   :option:`--with-trace-refs` option).
 
 
 Debug options
 -------------
 
-.. cmdoption:: --with-pydebug
+.. option:: --with-pydebug
 
    :ref:`Build Python in debug mode <debug-build>`: define the ``Py_DEBUG``
    macro (disabled by default).
 
-.. cmdoption:: --with-trace-refs
+.. option:: --with-trace-refs
 
    Enable tracing references for debugging purpose (disabled by default).
 
    Effects:
 
    * Define the ``Py_TRACE_REFS`` macro.
-   * Add :func:`sys.getobjects` function.
+   * Add :func:`!sys.getobjects` function.
    * Add :envvar:`PYTHONDUMPREFS` environment variable.
 
-   This build is not ABI compatible with release build (default build) or debug
-   build (``Py_DEBUG`` and ``Py_REF_DEBUG`` macros).
+   The :envvar:`PYTHONDUMPREFS` environment variable can be used to dump
+   objects and reference counts still alive at Python exit.
+
+   :ref:`Statically allocated objects <static-types>` are not traced.
+
+   .. versionchanged:: 3.13
+      This build is now ABI compatible with release build and :ref:`debug build
+      <debug-build>`.
 
    .. versionadded:: 3.8
 
-.. cmdoption:: --with-assertions
+.. option:: --with-assertions
 
    Build with C assertions enabled (default is no): ``assert(...);`` and
    ``_PyObject_ASSERT(...);``.
@@ -432,11 +713,11 @@ Debug options
 
    .. versionadded:: 3.6
 
-.. cmdoption:: --with-valgrind
+.. option:: --with-valgrind
 
    Enable Valgrind support (default is no).
 
-.. cmdoption:: --with-dtrace
+.. option:: --with-dtrace
 
    Enable DTrace support (default is no).
 
@@ -445,19 +726,19 @@ Debug options
 
    .. versionadded:: 3.6
 
-.. cmdoption:: --with-address-sanitizer
+.. option:: --with-address-sanitizer
 
    Enable AddressSanitizer memory error detector, ``asan`` (default is no).
 
    .. versionadded:: 3.6
 
-.. cmdoption:: --with-memory-sanitizer
+.. option:: --with-memory-sanitizer
 
    Enable MemorySanitizer allocation error detector, ``msan`` (default is no).
 
    .. versionadded:: 3.6
 
-.. cmdoption:: --with-undefined-behavior-sanitizer
+.. option:: --with-undefined-behavior-sanitizer
 
    Enable UndefinedBehaviorSanitizer undefined behaviour detector, ``ubsan``
    (default is no).
@@ -468,11 +749,11 @@ Debug options
 Linker options
 --------------
 
-.. cmdoption:: --enable-shared
+.. option:: --enable-shared
 
    Enable building a shared Python library: ``libpython`` (default is no).
 
-.. cmdoption:: --without-static-libpython
+.. option:: --without-static-libpython
 
    Do not build ``libpythonMAJOR.MINOR.a`` and do not install ``python.o``
    (built and enabled by default).
@@ -483,31 +764,32 @@ Linker options
 Libraries options
 -----------------
 
-.. cmdoption:: --with-libs='lib1 ...'
+.. option:: --with-libs='lib1 ...'
 
    Link against additional libraries (default is no).
 
-.. cmdoption:: --with-system-expat
+.. option:: --with-system-expat
 
-   Build the :mod:`pyexpat` module using an installed ``expat`` library
+   Build the :mod:`!pyexpat` module using an installed ``expat`` library
    (default is no).
 
-.. cmdoption:: --with-system-libmpdec
+.. option:: --with-system-libmpdec
 
    Build the ``_decimal`` extension module using an installed ``mpdec``
    library, see the :mod:`decimal` module (default is no).
 
    .. versionadded:: 3.3
 
-.. cmdoption:: --with-readline=editline
+.. option:: --with-readline=readline|editline
 
-   Use ``editline`` library for backend of the :mod:`readline` module.
+   Designate a backend library for the :mod:`readline` module.
 
-   Define the ``WITH_EDITLINE`` macro.
+   * readline: Use readline as the backend.
+   * editline: Use editline as the backend.
 
    .. versionadded:: 3.10
 
-.. cmdoption:: --without-readline
+.. option:: --without-readline
 
    Don't build the :mod:`readline` module (built by default).
 
@@ -515,21 +797,21 @@ Libraries options
 
    .. versionadded:: 3.10
 
-.. cmdoption:: --with-libm=STRING
+.. option:: --with-libm=STRING
 
    Override ``libm`` math library to *STRING* (default is system-dependent).
 
-.. cmdoption:: --with-libc=STRING
+.. option:: --with-libc=STRING
 
    Override ``libc`` C library to *STRING* (default is system-dependent).
 
-.. cmdoption:: --with-openssl=DIR
+.. option:: --with-openssl=DIR
 
    Root of the OpenSSL directory.
 
    .. versionadded:: 3.7
 
-.. cmdoption:: --with-openssl-rpath=[no|auto|DIR]
+.. option:: --with-openssl-rpath=[no|auto|DIR]
 
    Set runtime library directory (rpath) for OpenSSL libraries:
 
@@ -544,7 +826,7 @@ Libraries options
 Security Options
 ----------------
 
-.. cmdoption:: --with-hash-algorithm=[fnv|siphash13|siphash24]
+.. option:: --with-hash-algorithm=[fnv|siphash13|siphash24]
 
    Select hash algorithm for use in ``Python/pyhash.c``:
 
@@ -557,7 +839,7 @@ Security Options
    .. versionadded:: 3.11
       ``siphash13`` is added and it is the new default.
 
-.. cmdoption:: --with-builtin-hashlib-hashes=md5,sha1,sha256,sha512,sha3,blake2
+.. option:: --with-builtin-hashlib-hashes=md5,sha1,sha256,sha512,sha3,blake2
 
    Built-in hash modules:
 
@@ -570,7 +852,7 @@ Security Options
 
    .. versionadded:: 3.9
 
-.. cmdoption:: --with-ssl-default-suites=[python|openssl|STRING]
+.. option:: --with-ssl-default-suites=[python|openssl|STRING]
 
    Override the OpenSSL default cipher suites string:
 
@@ -592,19 +874,19 @@ macOS Options
 
 See ``Mac/README.rst``.
 
-.. cmdoption:: --enable-universalsdk
-.. cmdoption:: --enable-universalsdk=SDKDIR
+.. option:: --enable-universalsdk
+.. option:: --enable-universalsdk=SDKDIR
 
    Create a universal binary build. *SDKDIR* specifies which macOS SDK should
    be used to perform the build (default is no).
 
-.. cmdoption:: --enable-framework
-.. cmdoption:: --enable-framework=INSTALLDIR
+.. option:: --enable-framework
+.. option:: --enable-framework=INSTALLDIR
 
    Create a Python.framework rather than a traditional Unix install. Optional
    *INSTALLDIR* specifies the installation path (default is no).
 
-.. cmdoption:: --with-universal-archs=ARCH
+.. option:: --with-universal-archs=ARCH
 
    Specify the kind of universal binary that should be created. This option is
    only valid when :option:`--enable-universalsdk` is set.
@@ -620,7 +902,7 @@ See ``Mac/README.rst``.
    * ``intel-64``;
    * ``all``.
 
-.. cmdoption:: --with-framework-name=FRAMEWORK
+.. option:: --with-framework-name=FRAMEWORK
 
    Specify the name for the python framework on macOS only valid when
    :option:`--enable-framework` is set (default: ``Python``).
@@ -634,21 +916,21 @@ for another CPU architecture or platform. Cross compiling requires a Python
 interpreter for the build platform. The version of the build Python must match
 the version of the cross compiled host Python.
 
-.. cmdoption:: --build=BUILD
+.. option:: --build=BUILD
 
    configure for building on BUILD, usually guessed by :program:`config.guess`.
 
-.. cmdoption:: --host=HOST
+.. option:: --host=HOST
 
    cross-compile to build programs to run on HOST (target platform)
 
-.. cmdoption:: --with-build-python=path/to/python
+.. option:: --with-build-python=path/to/python
 
    path to build ``python`` binary for cross compiling
 
    .. versionadded:: 3.11
 
-.. cmdoption:: CONFIG_SITE=file
+.. option:: CONFIG_SITE=file
 
    An environment variable that points to a file with configure overrides.
 
@@ -659,6 +941,12 @@ the version of the cross compiled host Python.
       ac_cv_file__dev_ptmx=yes
       ac_cv_file__dev_ptc=no
 
+.. option:: HOSTRUNNER
+
+   Program to run CPython for the host platform for cross-compilation.
+
+   .. versionadded:: 3.11
+
 
 Cross compiling example::
 
@@ -679,7 +967,6 @@ Main files of the build system
 * :file:`pyconfig.h` (created by :file:`configure`);
 * :file:`Modules/Setup`: C extensions built by the Makefile using
   :file:`Module/makesetup` shell script;
-* :file:`setup.py`: C extensions built using the ``setuptools`` package.
 
 Main build steps
 ----------------
@@ -688,8 +975,7 @@ Main build steps
 * A static ``libpython`` library (``.a``) is created from objects files.
 * ``python.o`` and the static ``libpython`` library are linked into the
   final ``python`` program.
-* C extensions are built by the Makefile (see :file:`Modules/Setup`)
-  and ``python setup.py build``.
+* C extensions are built by the Makefile (see :file:`Modules/Setup`).
 
 Main Makefile targets
 ---------------------
@@ -701,9 +987,18 @@ Main Makefile targets
   You can use the configure :option:`--enable-optimizations` option to make
   this the default target of the ``make`` command (``make all`` or just
   ``make``).
-* ``make buildbottest``: Build Python and run the Python test suite, the same
-  way than buildbots test Python. Set ``TESTTIMEOUT`` variable (in seconds)
-  to change the test timeout (1200 by default: 20 minutes).
+
+* ``make test``: Build Python and run the Python test suite with ``--fast-ci``
+  option. Variables:
+
+  * ``TESTOPTS``: additional regrtest command line options.
+  * ``TESTPYTHONOPTS``: additional Python command line options.
+  * ``TESTTIMEOUT``: timeout in seconds (default: 20 minutes).
+
+* ``make buildbottest``: Similar to ``make test``, but use ``--slow-ci``
+  option and default timeout of 20 minutes, instead of ``--fast-ci`` option
+  and a default timeout of 10 minutes.
+
 * ``make install``: Build and install Python.
 * ``make regen-all``: Regenerate (almost) all generated files;
   ``make regen-stdlib-module-names`` and ``autoconf`` must be run separately
@@ -741,18 +1036,15 @@ Example on Linux x86-64::
 At the beginning of the files, C extensions are built as built-in modules.
 Extensions defined after the ``*shared*`` marker are built as dynamic libraries.
 
-The :file:`setup.py` script only builds C extensions as shared libraries using
-the :mod:`distutils` module.
-
-The :c:macro:`PyAPI_FUNC()`, :c:macro:`PyAPI_API()` and
-:c:macro:`PyMODINIT_FUNC()` macros of :file:`Include/pyport.h` are defined
+The :c:macro:`!PyAPI_FUNC()`, :c:macro:`!PyAPI_DATA()` and
+:c:macro:`PyMODINIT_FUNC` macros of :file:`Include/exports.h` are defined
 differently depending if the ``Py_BUILD_CORE_MODULE`` macro is defined:
 
 * Use ``Py_EXPORTED_SYMBOL`` if the ``Py_BUILD_CORE_MODULE`` is defined
 * Use ``Py_IMPORTED_SYMBOL`` otherwise.
 
 If the ``Py_BUILD_CORE_BUILTIN`` macro is used by mistake on a C extension
-built as a shared library, its ``PyInit_xxx()`` function is not exported,
+built as a shared library, its :samp:`PyInit_{xxx}()` function is not exported,
 causing an :exc:`ImportError` on import.
 
 
@@ -773,11 +1065,11 @@ Preprocessor flags
 
 .. envvar:: CPPFLAGS
 
-   (Objective) C/C++ preprocessor flags, e.g. ``-I<include dir>`` if you have
-   headers in a nonstandard directory ``<include dir>``.
+   (Objective) C/C++ preprocessor flags, e.g. :samp:`-I{include_dir}` if you have
+   headers in a nonstandard directory *include_dir*.
 
    Both :envvar:`CPPFLAGS` and :envvar:`LDFLAGS` need to contain the shell's
-   value for setup.py to be able to build extension modules using the
+   value to be able to build extension modules using the
    directories specified in the environment variables.
 
 .. envvar:: BASECPPFLAGS
@@ -814,8 +1106,8 @@ Compiler flags
 .. envvar:: CFLAGS_NODIST
 
    :envvar:`CFLAGS_NODIST` is used for building the interpreter and stdlib C
-   extensions.  Use it when a compiler flag should *not* be part of the
-   distutils :envvar:`CFLAGS` once Python is installed (:issue:`21121`).
+   extensions.  Use it when a compiler flag should *not* be part of
+   :envvar:`CFLAGS` once Python is installed (:gh:`65320`).
 
    In particular, :envvar:`CFLAGS` should not contain:
 
@@ -945,7 +1237,7 @@ Linker flags
 
    :envvar:`LDFLAGS_NODIST` is used in the same manner as
    :envvar:`CFLAGS_NODIST`.  Use it when a linker flag should *not* be part of
-   the distutils :envvar:`LDFLAGS` once Python is installed (:issue:`35257`).
+   :envvar:`LDFLAGS` once Python is installed (:gh:`65320`).
 
    In particular, :envvar:`LDFLAGS` should not contain:
 
@@ -963,11 +1255,11 @@ Linker flags
 
 .. envvar:: LDFLAGS
 
-   Linker flags, e.g. ``-L<lib dir>`` if you have libraries in a nonstandard
-   directory ``<lib dir>``.
+   Linker flags, e.g. :samp:`-L{lib_dir}` if you have libraries in a nonstandard
+   directory *lib_dir*.
 
    Both :envvar:`CPPFLAGS` and :envvar:`LDFLAGS` need to contain the shell's
-   value for setup.py to be able to build extension modules using the
+   value to be able to build extension modules using the
    directories specified in the environment variables.
 
 .. envvar:: LIBS
diff --git a/Doc/using/mac.rst b/Doc/using/mac.rst
index 69cd5c92d884d0..eb1413af2cbc3d 100644
--- a/Doc/using/mac.rst
+++ b/Doc/using/mac.rst
@@ -125,13 +125,9 @@ http://www.hashcollision.org/hkn/python/idle_intro/index.html.
 Installing Additional Python Packages
 =====================================
 
-There are several methods to install additional Python packages:
+This section has moved to the `Python Packaging User Guide`_.
 
-* Packages can be installed via the standard Python distutils mode (``python
-  setup.py install``).
-
-* Many packages can also be installed via the :program:`setuptools` extension
-  or :program:`pip` wrapper, see https://pip.pypa.io/.
+.. _Python Packaging User Guide: https://packaging.python.org/en/latest/tutorials/installing-packages/
 
 
 GUI Programming on the Mac
@@ -144,8 +140,8 @@ the foundation of most modern Mac development. Information on PyObjC is
 available from https://pypi.org/project/pyobjc/.
 
 The standard Python GUI toolkit is :mod:`tkinter`, based on the cross-platform
-Tk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with OS
-X by Apple, and the latest version can be downloaded and installed from
+Tk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with
+macOS by Apple, and the latest version can be downloaded and installed from
 https://www.activestate.com; it can also be built from source.
 
 *wxPython* is another popular cross-platform GUI toolkit that runs natively on
diff --git a/Doc/using/unix.rst b/Doc/using/unix.rst
index 0044eb07f56eec..58838c28e6eb86 100644
--- a/Doc/using/unix.rst
+++ b/Doc/using/unix.rst
@@ -30,9 +30,9 @@ following links:
       for Debian users
    https://en.opensuse.org/Portal:Packaging
       for OpenSuse users
-   https://docs-old.fedoraproject.org/en-US/Fedora_Draft_Documentation/0.1/html/RPM_Guide/ch-creating-rpms.html
+   https://docs.fedoraproject.org/en-US/package-maintainers/Packaging_Tutorial_GNU_Hello/
       for Fedora users
-   http://www.slackbook.org/html/package-management-making-packages.html
+   https://slackbook.org/html/package-management-making-packages.html
       for Slackware users
 
 
diff --git a/Doc/using/venv-create.inc b/Doc/using/venv-create.inc
index 2fc90126482268..1cf438b198a9af 100644
--- a/Doc/using/venv-create.inc
+++ b/Doc/using/venv-create.inc
@@ -35,37 +35,48 @@ your :ref:`Python installation <using-on-windows>`::
 
 The command, if run with ``-h``, will show the available options::
 
-    usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
-                [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps]
-                ENV_DIR [ENV_DIR ...]
-
-    Creates virtual Python environments in one or more target directories.
-
-    positional arguments:
-      ENV_DIR               A directory to create the environment in.
-
-    optional arguments:
-      -h, --help            show this help message and exit
-      --system-site-packages
-                            Give the virtual environment access to the system
-                            site-packages dir.
-      --symlinks            Try to use symlinks rather than copies, when symlinks
-                            are not the default for the platform.
-      --copies              Try to use copies rather than symlinks, even when
-                            symlinks are the default for the platform.
-      --clear               Delete the contents of the environment directory if it
-                            already exists, before environment creation.
-      --upgrade             Upgrade the environment directory to use this version
-                            of Python, assuming Python has been upgraded in-place.
-      --without-pip         Skips installing or upgrading pip in the virtual
-                            environment (pip is bootstrapped by default)
-      --prompt PROMPT       Provides an alternative prompt prefix for this
-                            environment.
-      --upgrade-deps        Upgrade core dependencies (pip) to the
-                            latest version in PyPI
-
-    Once an environment has been created, you may wish to activate it, e.g. by
-    sourcing an activate script in its bin directory.
+   usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
+               [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps]
+               [--without-scm-ignore-file]
+               ENV_DIR [ENV_DIR ...]
+
+   Creates virtual Python environments in one or more target directories.
+
+   positional arguments:
+   ENV_DIR               A directory to create the environment in.
+
+   options:
+   -h, --help            show this help message and exit
+   --system-site-packages
+                           Give the virtual environment access to the system
+                           site-packages dir.
+   --symlinks            Try to use symlinks rather than copies, when
+                           symlinks are not the default for the platform.
+   --copies              Try to use copies rather than symlinks, even when
+                           symlinks are the default for the platform.
+   --clear               Delete the contents of the environment directory if
+                           it already exists, before environment creation.
+   --upgrade             Upgrade the environment directory to use this
+                           version of Python, assuming Python has been upgraded
+                           in-place.
+   --without-pip         Skips installing or upgrading pip in the virtual
+                           environment (pip is bootstrapped by default)
+   --prompt PROMPT       Provides an alternative prompt prefix for this
+                           environment.
+   --upgrade-deps        Upgrade core dependencies (pip) to the latest
+                           version in PyPI
+   --without-scm-ignore-file
+                           Skips adding the default SCM ignore file to the
+                           environment directory (the default is a .gitignore
+                           file).
+
+   Once an environment has been created, you may wish to activate it, e.g. by
+   sourcing an activate script in its bin directory.
+
+.. versionchanged:: 3.13
+
+   ``--without-scm-ignore-file`` was added along with creating an ignore file
+   for ``git`` by default.
 
 .. versionchanged:: 3.12
 
diff --git a/Doc/using/windows.rst b/Doc/using/windows.rst
index 43e3c72f3e1cde..598bf3ca9bcc04 100644
--- a/Doc/using/windows.rst
+++ b/Doc/using/windows.rst
@@ -867,17 +867,18 @@ For example, if the first line of your script starts with
 
   #! /usr/bin/python
 
-The default Python will be located and used.  As many Python scripts written
-to work on Unix will already have this line, you should find these scripts can
-be used by the launcher without modification.  If you are writing a new script
-on Windows which you hope will be useful on Unix, you should use one of the
-shebang lines starting with ``/usr``.
+The default Python or an active virtual environment will be located and used.
+As many Python scripts written to work on Unix will already have this line,
+you should find these scripts can be used by the launcher without modification.
+If you are writing a new script on Windows which you hope will be useful on
+Unix, you should use one of the shebang lines starting with ``/usr``.
 
 Any of the above virtual commands can be suffixed with an explicit version
 (either just the major version, or the major and minor version).
 Furthermore the 32-bit version can be requested by adding "-32" after the
 minor version. I.e. ``/usr/bin/python3.7-32`` will request usage of the
-32-bit python 3.7.
+32-bit Python 3.7. If a virtual environment is active, the version will be
+ignored and the environment will be used.
 
 .. versionadded:: 3.7
 
@@ -889,7 +890,14 @@ minor version. I.e. ``/usr/bin/python3.7-32`` will request usage of the
 
    The "-64" suffix is deprecated, and now implies "any architecture that is
    not provably i386/32-bit". To request a specific environment, use the new
-   ``-V:<TAG>`` argument with the complete tag.
+   :samp:`-V:{TAG}` argument with the complete tag.
+
+.. versionchanged:: 3.13
+
+   Virtual commands referencing ``python`` now prefer an active virtual
+   environment rather than searching :envvar:`PATH`. This handles cases where
+   the shebang specifies ``/usr/bin/env python3`` but :file:`python3.exe` is
+   not present in the active environment.
 
 The ``/usr/bin/env`` form of shebang line has one further special property.
 Before looking for installed Python interpreters, this form will search the
@@ -1169,8 +1177,8 @@ following advice will prevent conflicts with other installations:
   listed.
 
 * If you are loading :file:`python3.dll` or :file:`python37.dll` in your own
-  executable, explicitly call :c:func:`Py_SetPath` or (at least)
-  :c:func:`Py_SetProgramName` before :c:func:`Py_Initialize`.
+  executable, explicitly set :c:member:`PyConfig.module_search_paths` before
+  :c:func:`Py_InitializeFromConfig`.
 
 * Clear and/or overwrite :envvar:`PYTHONPATH` and set :envvar:`PYTHONHOME`
   before launching :file:`python.exe` from your application.
@@ -1187,21 +1195,22 @@ Otherwise, your users may experience problems using your application. Note that
 the first suggestion is the best, as the others may still be susceptible to
 non-standard paths in the registry and user site-packages.
 
-.. versionchanged::
-   3.6
+.. versionchanged:: 3.6
+
+   Add ``._pth`` file support and removes ``applocal`` option from
+   ``pyvenv.cfg``.
+
+.. versionchanged:: 3.6
 
-      * Adds ``._pth`` file support and removes ``applocal`` option from
-        ``pyvenv.cfg``.
-      * Adds ``pythonXX.zip`` as a potential landmark when directly adjacent
-        to the executable.
+   Add :file:`python{XX}.zip` as a potential landmark when directly adjacent
+   to the executable.
 
-.. deprecated::
-   3.6
+.. deprecated:: 3.6
 
-      Modules specified in the registry under ``Modules`` (not ``PythonPath``)
-      may be imported by :class:`importlib.machinery.WindowsRegistryFinder`.
-      This finder is enabled on Windows in 3.6.0 and earlier, but may need to
-      be explicitly added to :attr:`sys.meta_path` in the future.
+   Modules specified in the registry under ``Modules`` (not ``PythonPath``)
+   may be imported by :class:`importlib.machinery.WindowsRegistryFinder`.
+   This finder is enabled on Windows in 3.6.0 and earlier, but may need to
+   be explicitly added to :data:`sys.meta_path` in the future.
 
 Additional modules
 ==================
@@ -1246,8 +1255,8 @@ shipped with PyWin32.  It is an embeddable IDE with a built-in debugger.
 cx_Freeze
 ---------
 
-`cx_Freeze <https://cx-freeze.readthedocs.io/en/latest/>`_ is a ``distutils``
-extension which wraps Python scripts into executable Windows programs
+`cx_Freeze <https://cx-freeze.readthedocs.io/en/latest/>`_
+wraps Python scripts into executable Windows programs
 (:file:`{*}.exe` files).  When you have done this, you can distribute your
 application without requiring your users to install Python.
 
diff --git a/Doc/whatsnew/2.0.rst b/Doc/whatsnew/2.0.rst
index 0eefefd863a68f..6d6e51006d5bd8 100644
--- a/Doc/whatsnew/2.0.rst
+++ b/Doc/whatsnew/2.0.rst
@@ -153,9 +153,9 @@ Lundh.  A detailed explanation of the interface was written up as :pep:`100`,
 significant points about the Unicode interfaces.
 
 In Python source code, Unicode strings are written as ``u"string"``.  Arbitrary
-Unicode characters can be written using a new escape sequence, ``\uHHHH``, where
+Unicode characters can be written using a new escape sequence, :samp:`\\u{HHHH}`, where
 *HHHH* is a 4-digit hexadecimal number from 0000 to FFFF.  The existing
-``\xHHHH`` escape sequence can also be used, and octal escapes can be used for
+:samp:`\\x{HH}` escape sequence can also be used, and octal escapes can be used for
 characters up to U+01FF, which is represented by ``\777``.
 
 Unicode strings, just like regular strings, are an immutable sequence type.
@@ -664,16 +664,16 @@ extra set of parentheses to pass both values as a tuple:  ``L.append( (1,2) )``.
 
 The earlier versions of these methods were more forgiving because they used an
 old function in Python's C interface to parse their arguments; 2.0 modernizes
-them to use :func:`PyArg_ParseTuple`, the current argument parsing function,
+them to use :c:func:`PyArg_ParseTuple`, the current argument parsing function,
 which provides more helpful error messages and treats multi-argument calls as
 errors.  If you absolutely must use 2.0 but can't fix your code, you can edit
 :file:`Objects/listobject.c` and define the preprocessor symbol
 ``NO_STRICT_LIST_APPEND`` to preserve the old behaviour; this isn't recommended.
 
 Some of the functions in the :mod:`socket` module are still forgiving in this
-way.  For example, :func:`socket.connect( ('hostname', 25) )` is the correct
-form, passing a tuple representing an IP address, but :func:`socket.connect(
-'hostname', 25 )` also works. :func:`socket.connect_ex` and :func:`socket.bind`
+way.  For example, ``socket.connect( ('hostname', 25) )`` is the correct
+form, passing a tuple representing an IP address, but ``socket.connect('hostname', 25)``
+also works. :meth:`socket.connect_ex <socket.socket.connect_ex>` and :meth:`socket.bind <socket.socket.bind>`
 are similarly easy-going.  2.0alpha1 tightened these functions up, but because
 the documentation actually used the erroneous multiple argument form, many
 people wrote code which would break with the stricter checking.  GvR backed out
@@ -766,7 +766,7 @@ file, :file:`Include/pyport.h`.
 
 Vladimir Marangozov's long-awaited malloc restructuring was completed, to make
 it easy to have the Python interpreter use a custom allocator instead of C's
-standard :func:`malloc`.  For documentation, read the comments in
+standard :c:func:`malloc`.  For documentation, read the comments in
 :file:`Include/pymem.h` and :file:`Include/objimpl.h`.  For the lengthy
 discussions during which the interface was hammered out, see the web archives of
 the 'patches' and 'python-dev' lists at python.org.
@@ -794,15 +794,15 @@ are generating Python code would run into this limit.  A patch by Charles G.
 Waldman raises the limit from ``2**16`` to ``2**32``.
 
 Three new convenience functions intended for adding constants to a module's
-dictionary at module initialization time were added: :func:`PyModule_AddObject`,
-:func:`PyModule_AddIntConstant`, and :func:`PyModule_AddStringConstant`.  Each
+dictionary at module initialization time were added: :c:func:`PyModule_AddObject`,
+:c:func:`PyModule_AddIntConstant`, and :c:func:`PyModule_AddStringConstant`.  Each
 of these functions takes a module object, a null-terminated C string containing
 the name to be added, and a third argument for the value to be assigned to the
 name.  This third argument is, respectively, a Python object, a C long, or a C
 string.
 
-A wrapper API was added for Unix-style signal handlers. :func:`PyOS_getsig` gets
-a signal handler and :func:`PyOS_setsig` will set a new handler.
+A wrapper API was added for Unix-style signal handlers. :c:func:`PyOS_getsig` gets
+a signal handler and :c:func:`PyOS_setsig` will set a new handler.
 
 .. ======================================================================
 
@@ -1030,9 +1030,9 @@ Module changes
 
 Lots of improvements and bugfixes were made to Python's extensive standard
 library; some of the affected modules include :mod:`readline`,
-:mod:`ConfigParser`, :mod:`cgi`, :mod:`calendar`, :mod:`posix`, :mod:`readline`,
-:mod:`xmllib`, :mod:`aifc`, :mod:`chunk, wave`, :mod:`random`, :mod:`shelve`,
-and :mod:`nntplib`.  Consult the CVS logs for the exact patch-by-patch details.
+:mod:`ConfigParser`, :mod:`!cgi`, :mod:`calendar`, :mod:`posix`, :mod:`readline`,
+:mod:`xmllib`, :mod:`!aifc`, :mod:`!chunk`, :mod:`wave`, :mod:`random`, :mod:`shelve`,
+and :mod:`!nntplib`.  Consult the CVS logs for the exact patch-by-patch details.
 
 Brian Gallew contributed OpenSSL support for the :mod:`socket` module.  OpenSSL
 is an implementation of the Secure Socket Layer, which encrypts the data being
diff --git a/Doc/whatsnew/2.1.rst b/Doc/whatsnew/2.1.rst
index 676da702b39693..f0e1ded75a9d27 100644
--- a/Doc/whatsnew/2.1.rst
+++ b/Doc/whatsnew/2.1.rst
@@ -692,8 +692,8 @@ applied, and 136 bugs fixed; both figures are likely to be underestimates.  Some
 of the more notable changes are:
 
 * A specialized object allocator is now optionally available, that should be
-  faster than the system :func:`malloc` and have less memory overhead.  The
-  allocator uses C's :func:`malloc` function to get large pools of memory, and
+  faster than the system :c:func:`malloc` and have less memory overhead.  The
+  allocator uses C's :c:func:`!malloc` function to get large pools of memory, and
   then fulfills smaller memory requests from these pools.  It can be enabled by
   providing the :option:`!--with-pymalloc` option to the :program:`configure`
   script; see :file:`Objects/obmalloc.c` for the implementation details.
@@ -701,13 +701,13 @@ of the more notable changes are:
   Authors of C extension modules should test their code with the object allocator
   enabled, because some incorrect code may break, causing core dumps at runtime.
   There are a bunch of memory allocation functions in Python's C API that have
-  previously been just aliases for the C library's :func:`malloc` and
-  :func:`free`, meaning that if you accidentally called mismatched functions, the
+  previously been just aliases for the C library's :c:func:`malloc` and
+  :c:func:`free`, meaning that if you accidentally called mismatched functions, the
   error wouldn't be noticeable.  When the object allocator is enabled, these
-  functions aren't aliases of :func:`malloc` and :func:`free` any more, and
+  functions aren't aliases of :c:func:`!malloc` and :c:func:`!free` any more, and
   calling the wrong function to free memory will get you a core dump.  For
-  example, if memory was allocated using :func:`PyMem_New`, it has to be freed
-  using :func:`PyMem_Del`, not :func:`free`.  A few modules included with Python
+  example, if memory was allocated using :c:macro:`PyMem_New`, it has to be freed
+  using :c:func:`PyMem_Del`, not :c:func:`!free`.  A few modules included with Python
   fell afoul of this and had to be fixed; doubtless there are more third-party
   modules that will have the same problem.
 
@@ -717,7 +717,7 @@ of the more notable changes are:
   complain about its lack of speed, and because it's often been used as a naïve
   benchmark.  The :meth:`readline` method of file objects has therefore been
   rewritten to be much faster.  The exact amount of the speedup will vary from
-  platform to platform depending on how slow the C library's :func:`getc` was, but
+  platform to platform depending on how slow the C library's :c:func:`!getc` was, but
   is around 66%, and potentially much faster on some particular operating systems.
   Tim Peters did much of the benchmarking and coding for this change, motivated by
   a discussion in comp.lang.python.
@@ -770,7 +770,7 @@ of the more notable changes are:
   reorganization done by Jeremy Hylton.
 
 * C extensions which import other modules have been changed to use
-  :func:`PyImport_ImportModule`, which means that they will use any import hooks
+  :c:func:`PyImport_ImportModule`, which means that they will use any import hooks
   that have been installed.  This is also encouraged for third-party extensions
   that need to import some other module from C code.
 
diff --git a/Doc/whatsnew/2.2.rst b/Doc/whatsnew/2.2.rst
index 82aff0be1ed3b3..6dfe79cef00987 100644
--- a/Doc/whatsnew/2.2.rst
+++ b/Doc/whatsnew/2.2.rst
@@ -424,22 +424,22 @@ Another significant addition to 2.2 is an iteration interface at both the C and
 Python levels.  Objects can define how they can be looped over by callers.
 
 In Python versions up to 2.1, the usual way to make ``for item in obj`` work is
-to define a :meth:`__getitem__` method that looks something like this::
+to define a :meth:`~object.__getitem__` method that looks something like this::
 
    def __getitem__(self, index):
        return <next item>
 
-:meth:`__getitem__` is more properly used to define an indexing operation on an
+:meth:`~object.__getitem__` is more properly used to define an indexing operation on an
 object so that you can write ``obj[5]`` to retrieve the sixth element.  It's a
 bit misleading when you're using this only to support :keyword:`for` loops.
 Consider some file-like object that wants to be looped over; the *index*
 parameter is essentially meaningless, as the class probably assumes that a
-series of :meth:`__getitem__` calls will be made with *index* incrementing by
-one each time.  In other words, the presence of the :meth:`__getitem__` method
+series of :meth:`~object.__getitem__` calls will be made with *index* incrementing by
+one each time.  In other words, the presence of the :meth:`~object.__getitem__` method
 doesn't mean that using ``file[5]``  to randomly access the sixth element will
 work, though it really should.
 
-In Python 2.2, iteration can be implemented separately, and :meth:`__getitem__`
+In Python 2.2, iteration can be implemented separately, and :meth:`~object.__getitem__`
 methods can be limited to classes that really do support random access.  The
 basic idea of iterators is  simple.  A new built-in function, ``iter(obj)``
 or ``iter(C, sentinel)``, is used to get an iterator. ``iter(obj)`` returns
@@ -1078,17 +1078,17 @@ code, none of the changes described here will affect you very much.
 
   To upgrade an extension module to the new API, perform the following steps:
 
-* Rename :c:func:`Py_TPFLAGS_GC` to :c:func:`PyTPFLAGS_HAVE_GC`.
+* Rename :c:macro:`!Py_TPFLAGS_GC` to :c:macro:`Py_TPFLAGS_HAVE_GC`.
 
 * Use :c:func:`PyObject_GC_New` or :c:func:`PyObject_GC_NewVar` to allocate
     objects, and :c:func:`PyObject_GC_Del` to deallocate them.
 
-* Rename :c:func:`PyObject_GC_Init` to :c:func:`PyObject_GC_Track` and
-    :c:func:`PyObject_GC_Fini` to :c:func:`PyObject_GC_UnTrack`.
+* Rename :c:func:`!PyObject_GC_Init` to :c:func:`PyObject_GC_Track` and
+  :c:func:`!PyObject_GC_Fini` to :c:func:`PyObject_GC_UnTrack`.
 
-* Remove :c:func:`PyGC_HEAD_SIZE` from object size calculations.
+* Remove :c:macro:`!PyGC_HEAD_SIZE` from object size calculations.
 
-* Remove calls to :c:func:`PyObject_AS_GC` and :c:func:`PyObject_FROM_GC`.
+* Remove calls to :c:func:`!PyObject_AS_GC` and :c:func:`!PyObject_FROM_GC`.
 
 * A new ``et`` format sequence was added to :c:func:`PyArg_ParseTuple`; ``et``
   takes both a parameter and an encoding name, and converts the parameter to the
@@ -1105,11 +1105,11 @@ code, none of the changes described here will affect you very much.
   expected, and a set of pointers to :c:expr:`PyObject*` variables that will be
   filled in with argument values.
 
-* Two new flags :const:`METH_NOARGS` and :const:`METH_O` are available in method
+* Two new flags :c:macro:`METH_NOARGS` and :c:macro:`METH_O` are available in method
   definition tables to simplify implementation of methods with no arguments or a
   single untyped argument. Calling such methods is more efficient than calling a
-  corresponding method that uses :const:`METH_VARARGS`.  Also, the old
-  :const:`METH_OLDARGS` style of writing C methods is  now officially deprecated.
+  corresponding method that uses :c:macro:`METH_VARARGS`.  Also, the old
+  :c:macro:`!METH_OLDARGS` style of writing C methods is  now officially deprecated.
 
 * Two new wrapper functions, :c:func:`PyOS_snprintf` and :c:func:`PyOS_vsnprintf`
   were added to provide  cross-platform implementations for the relatively new
@@ -1219,7 +1219,7 @@ Some of the more notable changes are:
   operator, but these features were rarely used and therefore buggy.  The
   :meth:`tolist` method and the :attr:`start`, :attr:`stop`, and :attr:`step`
   attributes are also being deprecated.  At the C level, the fourth argument to
-  the :c:func:`PyRange_New` function, ``repeat``, has also been deprecated.
+  the :c:func:`!PyRange_New` function, ``repeat``, has also been deprecated.
 
 * There were a bunch of patches to the dictionary implementation, mostly to fix
   potential core dumps if a dictionary contains objects that sneakily changed
diff --git a/Doc/whatsnew/2.3.rst b/Doc/whatsnew/2.3.rst
index 4eb864f5092d30..c989e6d3fa5787 100644
--- a/Doc/whatsnew/2.3.rst
+++ b/Doc/whatsnew/2.3.rst
@@ -925,7 +925,7 @@ Deletion is more straightforward::
    >>> a
    [1, 3]
 
-One can also now pass slice objects to the :meth:`__getitem__` methods of the
+One can also now pass slice objects to the :meth:`~object.__getitem__` methods of the
 built-in sequences::
 
    >>> range(10).__getitem__(slice(0, 5, 2))
@@ -1392,7 +1392,7 @@ complete list of changes, or look through the CVS logs for all the details.
   details.
 
 * The old and never-documented :mod:`linuxaudiodev` module has been deprecated,
-  and a new version named :mod:`ossaudiodev` has been added.  The module was
+  and a new version named :mod:`!ossaudiodev` has been added.  The module was
   renamed because the OSS sound drivers can be used on platforms other than Linux,
   and the interface has also been tidied and brought up to date in various ways.
   (Contributed by Greg Ward and Nicholas FitzRoy-Dale.)
@@ -1474,7 +1474,7 @@ complete list of changes, or look through the CVS logs for all the details.
 * On Windows, the :mod:`socket` module now ships with Secure  Sockets Layer
   (SSL) support.
 
-* The value of the C :const:`PYTHON_API_VERSION` macro is now exposed at the
+* The value of the C :c:macro:`PYTHON_API_VERSION` macro is now exposed at the
   Python level as ``sys.api_version``.  The current exception can be cleared by
   calling the new :func:`sys.exc_clear` function.
 
@@ -1555,7 +1555,7 @@ complete list of changes, or look through the CVS logs for all the details.
      # [0.36831796169281006, 0.37441694736480713, 0.35304892063140869]
      # [0.17574405670166016, 0.18193507194519043, 0.17565798759460449]
 
-* The :mod:`Tix` module has received various bug fixes and updates for the
+* The :mod:`!Tix` module has received various bug fixes and updates for the
   current version of the Tix package.
 
 * The :mod:`Tkinter` module now works with a thread-enabled  version of Tcl.
@@ -1596,7 +1596,7 @@ complete list of changes, or look through the CVS logs for all the details.
   module.
 
   Adding the mix-in as a superclass provides the full dictionary interface
-  whenever the class defines :meth:`__getitem__`, :meth:`__setitem__`,
+  whenever the class defines :meth:`~object.__getitem__`, :meth:`__setitem__`,
   :meth:`__delitem__`, and :meth:`keys`. For example::
 
      >>> import UserDict
@@ -1847,7 +1847,7 @@ specifically for allocating Python objects.
   :c:func:`PyObject_Malloc`, :c:func:`PyObject_Realloc`, and :c:func:`PyObject_Free`.
 
 * To allocate and free Python objects, use the "object" family
-  :c:func:`PyObject_New`, :c:func:`PyObject_NewVar`, and :c:func:`PyObject_Del`.
+  :c:macro:`PyObject_New`, :c:macro:`PyObject_NewVar`, and :c:func:`PyObject_Del`.
 
 Thanks to lots of work by Tim Peters, pymalloc in 2.3 also provides debugging
 features to catch memory overwrites and doubled frees in both extension modules
@@ -1886,10 +1886,10 @@ Changes to Python's build process and to the C API include:
   (:file:`libpython2.3.so`) by supplying :option:`!--enable-shared` when running
   Python's :program:`configure` script.  (Contributed by Ondrej Palkovsky.)
 
-* The :c:macro:`DL_EXPORT` and :c:macro:`DL_IMPORT` macros are now deprecated.
+* The :c:macro:`!DL_EXPORT` and :c:macro:`!DL_IMPORT` macros are now deprecated.
   Initialization functions for Python extension modules should now be declared
   using the new macro :c:macro:`PyMODINIT_FUNC`, while the Python core will
-  generally use the :c:macro:`PyAPI_FUNC` and :c:macro:`PyAPI_DATA` macros.
+  generally use the :c:macro:`!PyAPI_FUNC` and :c:macro:`!PyAPI_DATA` macros.
 
 * The interpreter can be compiled without any docstrings for the built-in
   functions and modules by supplying :option:`!--without-doc-strings` to the
@@ -1897,12 +1897,12 @@ Changes to Python's build process and to the C API include:
   but will also mean that you can't get help for Python's built-ins.  (Contributed
   by Gustavo Niemeyer.)
 
-* The :c:func:`PyArg_NoArgs` macro is now deprecated, and code that uses it
+* The :c:func:`!PyArg_NoArgs` macro is now deprecated, and code that uses it
   should be changed.  For Python 2.2 and later, the method definition table can
-  specify the :const:`METH_NOARGS` flag, signalling that there are no arguments,
+  specify the :c:macro:`METH_NOARGS` flag, signalling that there are no arguments,
   and the argument checking can then be removed.  If compatibility with pre-2.2
   versions of Python is important, the code could use ``PyArg_ParseTuple(args,
-  "")`` instead, but this will be slower than using :const:`METH_NOARGS`.
+  "")`` instead, but this will be slower than using :c:macro:`METH_NOARGS`.
 
 * :c:func:`PyArg_ParseTuple` accepts new format characters for various sizes of
   unsigned integers: ``B`` for :c:expr:`unsigned char`, ``H`` for :c:expr:`unsigned
@@ -1918,7 +1918,7 @@ Changes to Python's build process and to the C API include:
   seconds, according to one measurement).
 
 * It's now possible to define class and static methods for a C extension type by
-  setting either the :const:`METH_CLASS` or :const:`METH_STATIC` flags in a
+  setting either the :c:macro:`METH_CLASS` or :c:macro:`METH_STATIC` flags in a
   method's :c:type:`PyMethodDef` structure.
 
 * Python now includes a copy of the Expat XML parser's source code, removing any
@@ -1998,13 +1998,13 @@ Some of the more notable changes are:
   It would be difficult to detect any resulting difference from Python code, apart
   from a slight speed up when Python is run without :option:`-O`.
 
-  C extensions that access the :attr:`f_lineno` field of frame objects should
+  C extensions that access the :attr:`~frame.f_lineno` field of frame objects should
   instead call ``PyCode_Addr2Line(f->f_code, f->f_lasti)``. This will have the
   added effect of making the code work as desired under "python -O" in earlier
   versions of Python.
 
   A nifty new feature is that trace functions can now assign to the
-  :attr:`f_lineno` attribute of frame objects, changing the line that will be
+  :attr:`~frame.f_lineno` attribute of frame objects, changing the line that will be
   executed next.  A ``jump`` command has been added to the :mod:`pdb` debugger
   taking advantage of this new feature. (Implemented by Richie Hindle.)
 
diff --git a/Doc/whatsnew/2.4.rst b/Doc/whatsnew/2.4.rst
index 98dc83fe935d5e..cab321c3e54d18 100644
--- a/Doc/whatsnew/2.4.rst
+++ b/Doc/whatsnew/2.4.rst
@@ -1191,7 +1191,7 @@ complete list of changes, or look through the CVS logs for all the details.
   effect is to make :file:`.pyc` files significantly smaller. (Contributed by
   Martin von Löwis.)
 
-* The :mod:`nntplib` module's :class:`NNTP` class gained :meth:`description` and
+* The :mod:`!nntplib` module's :class:`NNTP` class gained :meth:`description` and
   :meth:`descriptions` methods to retrieve  newsgroup descriptions for a single
   group or for a range of groups. (Contributed by Jürgen A. Erhard.)
 
@@ -1468,7 +1468,7 @@ Some of the changes to Python's build process and to the C API are:
   *X* is a NaN.   (Contributed by Tim Peters.)
 
 * C code can avoid unnecessary locking by using the new
-  :c:func:`PyEval_ThreadsInitialized` function to tell  if any thread operations
+  :c:func:`!PyEval_ThreadsInitialized` function to tell  if any thread operations
   have been performed.  If this function  returns false, no lock operations are
   needed. (Contributed by Nick Coghlan.)
 
@@ -1476,7 +1476,7 @@ Some of the changes to Python's build process and to the C API are:
   :c:func:`PyArg_ParseTupleAndKeywords` but takes a  :c:type:`va_list` instead of a
   number of arguments. (Contributed by Greg Chapman.)
 
-* A new method flag, :const:`METH_COEXISTS`, allows a function defined in slots
+* A new method flag, :c:macro:`METH_COEXIST`, allows a function defined in slots
   to co-exist with a :c:type:`PyCFunction` having the same name.  This can halve
   the access time for a method such as :meth:`set.__contains__`.  (Contributed by
   Raymond Hettinger.)
@@ -1491,7 +1491,7 @@ Some of the changes to Python's build process and to the C API are:
   though that processor architecture doesn't call that register "the TSC
   register".  (Contributed by Jeremy Hylton.)
 
-* The :c:type:`tracebackobject` type has been renamed to
+* The :c:type:`!tracebackobject` type has been renamed to
   :c:type:`PyTracebackObject`.
 
 .. ======================================================================
diff --git a/Doc/whatsnew/2.5.rst b/Doc/whatsnew/2.5.rst
index dcfaef6ed29494..64b951da3fd5b8 100644
--- a/Doc/whatsnew/2.5.rst
+++ b/Doc/whatsnew/2.5.rst
@@ -575,15 +575,15 @@ structure is::
        with-block
 
 The expression is evaluated, and it should result in an object that supports the
-context management protocol (that is, has :meth:`__enter__` and :meth:`__exit__`
+context management protocol (that is, has :meth:`~object.__enter__` and :meth:`~object.__exit__`
 methods.
 
-The object's :meth:`__enter__` is called before *with-block* is executed and
+The object's :meth:`~object.__enter__` is called before *with-block* is executed and
 therefore can run set-up code. It also may return a value that is bound to the
 name *variable*, if given.  (Note carefully that *variable* is *not* assigned
 the result of *expression*.)
 
-After execution of the *with-block* is finished, the object's :meth:`__exit__`
+After execution of the *with-block* is finished, the object's :meth:`~object.__exit__`
 method is called, even if the block raised an exception, and can therefore run
 clean-up code.
 
@@ -609,7 +609,7 @@ part-way through the block.
 .. note::
 
    In this case, *f* is the same object created by :func:`open`, because
-   :meth:`file.__enter__` returns *self*.
+   :meth:`~object.__enter__` returns *self*.
 
 The :mod:`threading` module's locks and condition variables  also support the
 ':keyword:`with`' statement::
@@ -652,10 +652,10 @@ underlying implementation and should keep reading.
 A high-level explanation of the context management protocol is:
 
 * The expression is evaluated and should result in an object called a "context
-  manager".  The context manager must have :meth:`__enter__` and :meth:`__exit__`
+  manager".  The context manager must have :meth:`~object.__enter__` and :meth:`~object.__exit__`
   methods.
 
-* The context manager's :meth:`__enter__` method is called.  The value returned
+* The context manager's :meth:`~object.__enter__` method is called.  The value returned
   is assigned to *VAR*.  If no ``'as VAR'`` clause is present, the value is simply
   discarded.
 
@@ -669,7 +669,7 @@ A high-level explanation of the context management protocol is:
   if you do the author of the code containing the ':keyword:`with`' statement will
   never realize anything went wrong.
 
-* If *BLOCK* didn't raise an exception,  the :meth:`__exit__` method is still
+* If *BLOCK* didn't raise an exception,  the :meth:`~object.__exit__` method is still
   called, but *type*, *value*, and *traceback* are all ``None``.
 
 Let's think through an example.  I won't present detailed code but will only
@@ -703,7 +703,7 @@ rolled back if there's an exception. Here's the basic interface for
        def rollback (self):
            "Rolls back current transaction"
 
-The :meth:`__enter__` method is pretty easy, having only to start a new
+The :meth:`~object.__enter__` method is pretty easy, having only to start a new
 transaction.  For this application the resulting cursor object would be a useful
 result, so the method will return it.  The user can then add ``as cursor`` to
 their ':keyword:`with`' statement to bind the cursor to a variable name. ::
@@ -715,7 +715,7 @@ their ':keyword:`with`' statement to bind the cursor to a variable name. ::
            cursor = self.cursor()
            return cursor
 
-The :meth:`__exit__` method is the most complicated because it's where most of
+The :meth:`~object.__exit__` method is the most complicated because it's where most of
 the work has to be done.  The method has to check if an exception occurred.  If
 there was no exception, the transaction is committed.  The transaction is rolled
 back if there was an exception.
@@ -748,10 +748,10 @@ are useful for writing objects for use with the ':keyword:`with`' statement.
 The decorator is called :func:`contextmanager`, and lets you write a single
 generator function instead of defining a new class.  The generator should yield
 exactly one value.  The code up to the :keyword:`yield` will be executed as the
-:meth:`__enter__` method, and the value yielded will be the method's return
+:meth:`~object.__enter__` method, and the value yielded will be the method's return
 value that will get bound to the variable in the ':keyword:`with`' statement's
 :keyword:`!as` clause, if any.  The code after the :keyword:`yield` will be
-executed in the :meth:`__exit__` method.  Any exception raised in the block will
+executed in the :meth:`~object.__exit__` method.  Any exception raised in the block will
 be raised by the :keyword:`!yield` statement.
 
 Our database example from the previous section could be written  using this
@@ -954,7 +954,7 @@ The return value must be either a Python integer or long integer. The
 interpreter will check that the type returned is correct, and raises a
 :exc:`TypeError` if this requirement isn't met.
 
-A corresponding :attr:`nb_index` slot was added to the C-level
+A corresponding :c:member:`~PyNumberMethods.nb_index` slot was added to the C-level
 :c:type:`PyNumberMethods` structure to let C extensions implement this protocol.
 ``PyNumber_Index(obj)`` can be used in extension code to call the
 :meth:`__index__` function and retrieve its result.
@@ -1222,7 +1222,7 @@ Here's a partial list of the most notable changes, sorted alphabetically by
 module name. Consult the :file:`Misc/NEWS` file in the source tree for a more
 complete list of changes, or look through the SVN logs for all the details.
 
-* The :mod:`audioop` module now supports the a-LAW encoding, and the code for
+* The :mod:`!audioop` module now supports the a-LAW encoding, and the code for
   u-LAW encoding has been improved.  (Contributed by Lars Immisch.)
 
 * The :mod:`codecs` module gained support for incremental codecs.  The
@@ -1347,7 +1347,7 @@ complete list of changes, or look through the SVN logs for all the details.
   :func:`input` function to allow opening files in binary or :term:`universal
   newlines` mode.  Another new parameter, *openhook*, lets you use a function
   other than :func:`open`  to open the input files.  Once you're iterating over
-  the set of files, the :class:`FileInput` object's new :meth:`fileno` returns
+  the set of files, the :class:`FileInput` object's new :meth:`~fileinput.fileno` returns
   the file descriptor for the currently opened file. (Contributed by Georg
   Brandl.)
 
@@ -1422,13 +1422,13 @@ complete list of changes, or look through the SVN logs for all the details.
   (Contributed by Gregory K. Johnson.  Funding was provided by Google's 2005
   Summer of Code.)
 
-* New module: the :mod:`msilib` module allows creating Microsoft Installer
+* New module: the :mod:`!msilib` module allows creating Microsoft Installer
   :file:`.msi` files and CAB files.  Some support for reading the :file:`.msi`
   database is also included. (Contributed by Martin von Löwis.)
 
-* The :mod:`nis` module now supports accessing domains other than the system
-  default domain by supplying a *domain* argument to the :func:`nis.match` and
-  :func:`nis.maps` functions. (Contributed by Ben Bell.)
+* The :mod:`!nis` module now supports accessing domains other than the system
+  default domain by supplying a *domain* argument to the :func:`!nis.match` and
+  :func:`!nis.maps` functions. (Contributed by Ben Bell.)
 
 * The :mod:`operator` module's :func:`itemgetter`  and :func:`attrgetter`
   functions now support multiple fields.   A call such as
@@ -1448,10 +1448,10 @@ complete list of changes, or look through the SVN logs for all the details.
   return times that are precise to fractions of a second; not all systems support
   such precision.)
 
-  Constants named :attr:`os.SEEK_SET`, :attr:`os.SEEK_CUR`, and
-  :attr:`os.SEEK_END` have been added; these are the parameters to the
+  Constants named :const:`os.SEEK_SET`, :const:`os.SEEK_CUR`, and
+  :const:`os.SEEK_END` have been added; these are the parameters to the
   :func:`os.lseek` function.  Two new constants for locking are
-  :attr:`os.O_SHLOCK` and :attr:`os.O_EXLOCK`.
+  :const:`os.O_SHLOCK` and :const:`os.O_EXLOCK`.
 
   Two new functions, :func:`wait3` and :func:`wait4`, were added.  They're similar
   the :func:`waitpid` function which waits for a child process to exit and returns
@@ -1542,7 +1542,7 @@ complete list of changes, or look through the SVN logs for all the details.
   :meth:`getproto` accessor methods to retrieve the family, type, and protocol
   values for the socket.
 
-* New module: the :mod:`spwd` module provides functions for accessing the shadow
+* New module: the :mod:`!spwd` module provides functions for accessing the shadow
   password database on systems that support  shadow passwords.
 
 * The :mod:`struct` is now faster because it  compiles format strings into
@@ -1602,7 +1602,7 @@ complete list of changes, or look through the SVN logs for all the details.
 
 * The :mod:`unicodedata` module has been updated to use version 4.1.0 of the
   Unicode character database.  Version 3.2.0 is required  by some specifications,
-  so it's still available as  :attr:`unicodedata.ucd_3_2_0`.
+  so it's still available as  :data:`unicodedata.ucd_3_2_0`.
 
 * New module: the  :mod:`uuid` module generates  universally unique identifiers
   (UUIDs) according to :rfc:`4122`.  The RFC defines several different UUID
@@ -2119,9 +2119,9 @@ Changes to Python's build process and to the C API include:
   the various AST nodes in :file:`Parser/Python.asdl`.  A Python script reads this
   file and generates a set of C structure definitions in
   :file:`Include/Python-ast.h`.  The :c:func:`PyParser_ASTFromString` and
-  :c:func:`PyParser_ASTFromFile`, defined in :file:`Include/pythonrun.h`, take
+  :c:func:`!PyParser_ASTFromFile`, defined in :file:`Include/pythonrun.h`, take
   Python source as input and return the root of an AST representing the contents.
-  This AST can then be turned into a code object by :c:func:`PyAST_Compile`.  For
+  This AST can then be turned into a code object by :c:func:`!PyAST_Compile`.  For
   more information, read the source code, and then ask questions on python-dev.
 
   The AST code was developed under Jeremy Hylton's management, and implemented by
@@ -2151,8 +2151,8 @@ Changes to Python's build process and to the C API include:
 
   Previously these different families all reduced to the platform's
   :c:func:`malloc` and :c:func:`free` functions.  This meant  it didn't matter if
-  you got things wrong and allocated memory with the :c:func:`PyMem` function but
-  freed it with the :c:func:`PyObject` function.  With 2.5's changes to obmalloc,
+  you got things wrong and allocated memory with the ``PyMem`` function but
+  freed it with the ``PyObject`` function.  With 2.5's changes to obmalloc,
   these families now do different things and mismatches will probably result in a
   segfault.  You should carefully test your C extension modules with Python 2.5.
 
@@ -2172,7 +2172,7 @@ Changes to Python's build process and to the C API include:
   ``Py_LOCAL(type)`` declares the function as returning a value of the
   specified *type* and uses a fast-calling qualifier.
   ``Py_LOCAL_INLINE(type)`` does the same thing and also requests the
-  function be inlined.  If :c:func:`PY_LOCAL_AGGRESSIVE` is defined before
+  function be inlined.  If macro :c:macro:`!PY_LOCAL_AGGRESSIVE` is defined before
   :file:`python.h` is included, a set of more aggressive optimizations are enabled
   for the module; you should benchmark the results to find out if these
   optimizations actually make the code faster.  (Contributed by Fredrik Lundh at
@@ -2181,7 +2181,7 @@ Changes to Python's build process and to the C API include:
 * ``PyErr_NewException(name, base, dict)`` can now accept a tuple of base
   classes as its *base* argument.  (Contributed by Georg Brandl.)
 
-* The :c:func:`PyErr_Warn` function for issuing warnings is now deprecated in
+* The :c:func:`!PyErr_Warn` function for issuing warnings is now deprecated in
   favour of ``PyErr_WarnEx(category, message, stacklevel)`` which lets you
   specify the number of stack frames separating this function and the caller.  A
   *stacklevel* of 1 is the function calling :c:func:`PyErr_WarnEx`, 2 is the
@@ -2191,7 +2191,7 @@ Changes to Python's build process and to the C API include:
   compiled with a C++ compiler without errors.   (Implemented by Anthony Baxter,
   Martin von Löwis, Skip Montanaro.)
 
-* The :c:func:`PyRange_New` function was removed.  It was never documented, never
+* The :c:func:`!PyRange_New` function was removed.  It was never documented, never
   used in the core code, and had dangerously lax error checking.  In the unlikely
   case that your extensions were using it, you can replace it by something like
   the following::
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
index 84bb651e68eed5..e8c1709c42abac 100644
--- a/Doc/whatsnew/2.6.rst
+++ b/Doc/whatsnew/2.6.rst
@@ -121,11 +121,11 @@ about features that will be removed in Python 3.0.  You can run code
 with this switch to see how much work will be necessary to port
 code to 3.0.  The value of this switch is available
 to Python code as the boolean variable :data:`sys.py3kwarning`,
-and to C extension code as :c:data:`Py_Py3kWarningFlag`.
+and to C extension code as :c:data:`!Py_Py3kWarningFlag`.
 
 .. seealso::
 
-   The 3xxx series of PEPs, which contains proposals for Python 3.0.
+   The 3\ *xxx* series of PEPs, which contains proposals for Python 3.0.
    :pep:`3000` describes the development process for Python 3.0.
    Start with :pep:`3100` that describes the general goals for Python
    3.0, and then explore the higher-numbered PEPS that propose
@@ -269,15 +269,15 @@ structure is::
        with-block
 
 The expression is evaluated, and it should result in an object that supports the
-context management protocol (that is, has :meth:`__enter__` and :meth:`__exit__`
+context management protocol (that is, has :meth:`~object.__enter__` and :meth:`~object.__exit__`
 methods).
 
-The object's :meth:`__enter__` is called before *with-block* is executed and
+The object's :meth:`~object.__enter__` is called before *with-block* is executed and
 therefore can run set-up code. It also may return a value that is bound to the
 name *variable*, if given.  (Note carefully that *variable* is *not* assigned
 the result of *expression*.)
 
-After execution of the *with-block* is finished, the object's :meth:`__exit__`
+After execution of the *with-block* is finished, the object's :meth:`~object.__exit__`
 method is called, even if the block raised an exception, and can therefore run
 clean-up code.
 
@@ -296,7 +296,7 @@ part-way through the block.
 .. note::
 
    In this case, *f* is the same object created by :func:`open`, because
-   :meth:`file.__enter__` returns *self*.
+   :meth:`~object.__enter__` returns *self*.
 
 The :mod:`threading` module's locks and condition variables  also support the
 ':keyword:`with`' statement::
@@ -339,16 +339,16 @@ underlying implementation and should keep reading.
 A high-level explanation of the context management protocol is:
 
 * The expression is evaluated and should result in an object called a "context
-  manager".  The context manager must have :meth:`__enter__` and :meth:`__exit__`
+  manager".  The context manager must have :meth:`~object.__enter__` and :meth:`~object.__exit__`
   methods.
 
-* The context manager's :meth:`__enter__` method is called.  The value returned
+* The context manager's :meth:`~object.__enter__` method is called.  The value returned
   is assigned to *VAR*.  If no ``as VAR`` clause is present, the value is simply
   discarded.
 
 * The code in *BLOCK* is executed.
 
-* If *BLOCK* raises an exception, the context manager's :meth:`__exit__` method
+* If *BLOCK* raises an exception, the context manager's :meth:`~object.__exit__` method
   is called with three arguments, the exception details (``type, value, traceback``,
   the same values returned by :func:`sys.exc_info`, which can also be ``None``
   if no exception occurred).  The method's return value controls whether an exception
@@ -357,7 +357,7 @@ A high-level explanation of the context management protocol is:
   if you do the author of the code containing the ':keyword:`with`' statement will
   never realize anything went wrong.
 
-* If *BLOCK* didn't raise an exception,  the :meth:`__exit__` method is still
+* If *BLOCK* didn't raise an exception,  the :meth:`~object.__exit__` method is still
   called, but *type*, *value*, and *traceback* are all ``None``.
 
 Let's think through an example.  I won't present detailed code but will only
@@ -391,7 +391,7 @@ rolled back if there's an exception. Here's the basic interface for
        def rollback(self):
            "Rolls back current transaction"
 
-The :meth:`__enter__` method is pretty easy, having only to start a new
+The :meth:`~object.__enter__` method is pretty easy, having only to start a new
 transaction.  For this application the resulting cursor object would be a useful
 result, so the method will return it.  The user can then add ``as cursor`` to
 their ':keyword:`with`' statement to bind the cursor to a variable name. ::
@@ -403,7 +403,7 @@ their ':keyword:`with`' statement to bind the cursor to a variable name. ::
            cursor = self.cursor()
            return cursor
 
-The :meth:`__exit__` method is the most complicated because it's where most of
+The :meth:`~object.__exit__` method is the most complicated because it's where most of
 the work has to be done.  The method has to check if an exception occurred.  If
 there was no exception, the transaction is committed.  The transaction is rolled
 back if there was an exception.
@@ -436,10 +436,10 @@ are useful when writing objects for use with the ':keyword:`with`' statement.
 The decorator is called :func:`contextmanager`, and lets you write a single
 generator function instead of defining a new class.  The generator should yield
 exactly one value.  The code up to the :keyword:`yield` will be executed as the
-:meth:`__enter__` method, and the value yielded will be the method's return
+:meth:`~object.__enter__` method, and the value yielded will be the method's return
 value that will get bound to the variable in the ':keyword:`with`' statement's
 :keyword:`!as` clause, if any.  The code after the :keyword:`!yield` will be
-executed in the :meth:`__exit__` method.  Any exception raised in the block will
+executed in the :meth:`~object.__exit__` method.  Any exception raised in the block will
 be raised by the :keyword:`!yield` statement.
 
 Using this decorator, our database example from the previous section
@@ -875,11 +875,11 @@ The signature of the new function is::
 
 The parameters are:
 
- * *args*: positional arguments whose values will be printed out.
- * *sep*: the separator, which will be printed between arguments.
- * *end*: the ending text, which will be printed after all of the
-   arguments have been output.
- * *file*: the file object to which the output will be sent.
+* *args*: positional arguments whose values will be printed out.
+* *sep*: the separator, which will be printed between arguments.
+* *end*: the ending text, which will be printed after all of the
+  arguments have been output.
+* *file*: the file object to which the output will be sent.
 
 .. seealso::
 
@@ -977,7 +977,7 @@ can be used to include Unicode characters::
     print len(s)               # 12 Unicode characters
 
 At the C level, Python 3.0 will rename the existing 8-bit
-string type, called :c:type:`PyStringObject` in Python 2.x,
+string type, called :c:type:`!PyStringObject` in Python 2.x,
 to :c:type:`PyBytesObject`.  Python 2.6 uses ``#define``
 to support using the names :c:func:`PyBytesObject`,
 :c:func:`PyBytes_Check`, :c:func:`PyBytes_FromStringAndSize`,
@@ -1138,13 +1138,13 @@ indicate that the external caller is done.
 The *flags* argument to :c:func:`PyObject_GetBuffer` specifies
 constraints upon the memory returned.  Some examples are:
 
- * :const:`PyBUF_WRITABLE` indicates that the memory must be writable.
+* :c:macro:`PyBUF_WRITABLE` indicates that the memory must be writable.
 
- * :const:`PyBUF_LOCK` requests a read-only or exclusive lock on the memory.
+* :c:macro:`PyBUF_LOCK` requests a read-only or exclusive lock on the memory.
 
- * :const:`PyBUF_C_CONTIGUOUS` and :const:`PyBUF_F_CONTIGUOUS`
-   requests a C-contiguous (last dimension varies the fastest) or
-   Fortran-contiguous (first dimension varies the fastest) array layout.
+* :c:macro:`PyBUF_C_CONTIGUOUS` and :c:macro:`PyBUF_F_CONTIGUOUS`
+  requests a C-contiguous (last dimension varies the fastest) or
+  Fortran-contiguous (first dimension varies the fastest) array layout.
 
 Two new argument codes for :c:func:`PyArg_ParseTuple`,
 ``s*`` and ``z*``, return locked buffer objects for a parameter.
@@ -1677,8 +1677,9 @@ Some smaller changes made to the core Python language are:
   (:issue:`1591665`)
 
 * Instance method objects have new attributes for the object and function
-  comprising the method; the new synonym for :attr:`im_self` is
-  :attr:`__self__`, and :attr:`im_func` is also available as :attr:`__func__`.
+  comprising the method; the new synonym for :attr:`!im_self` is
+  :attr:`~method.__self__`, and :attr:`!im_func` is also available as
+  :attr:`~method.__func__`.
   The old names are still supported in Python 2.6, but are gone in 3.0.
 
 * An obscure change: when you use the :func:`locals` function inside a
@@ -1737,7 +1738,7 @@ Optimizations
   (Contributed by Antoine Pitrou.)  Memory usage is reduced
   by using pymalloc for the Unicode string's data.
 
-* The ``with`` statement now stores the :meth:`__exit__` method on the stack,
+* The ``with`` statement now stores the :meth:`~object.__exit__` method on the stack,
   producing a small speedup.  (Implemented by Jeffrey Yasskin.)
 
 * To reduce memory usage, the garbage collector will now clear internal
@@ -1805,15 +1806,15 @@ changes, or look through the Subversion logs for all the details.
   available, instead of restricting itself to protocol 1.
   (Contributed by W. Barnes.)
 
-* The :mod:`cgi` module will now read variables from the query string
+* The :mod:`!cgi` module will now read variables from the query string
   of an HTTP POST request.  This makes it possible to use form actions
   with URLs that include query strings such as
   "/cgi-bin/add.py?category=1".  (Contributed by Alexandre Fiori and
   Nubis; :issue:`1817`.)
 
   The :func:`parse_qs` and :func:`parse_qsl` functions have been
-  relocated from the :mod:`cgi` module to the :mod:`urlparse` module.
-  The versions still available in the :mod:`cgi` module will
+  relocated from the :mod:`!cgi` module to the :mod:`urlparse` module.
+  The versions still available in the :mod:`!cgi` module will
   trigger :exc:`PendingDeprecationWarning` messages in 2.6
   (:issue:`600362`).
 
@@ -1850,8 +1851,8 @@ changes, or look through the Subversion logs for all the details.
   special values and floating-point exceptions in a manner consistent
   with Annex 'G' of the C99 standard.
 
-* A new data type in the :mod:`collections` module: :class:`namedtuple(typename,
-  fieldnames)` is a factory function that creates subclasses of the standard tuple
+* A new data type in the :mod:`collections` module: ``namedtuple(typename, fieldnames)``
+  is a factory function that creates subclasses of the standard tuple
   whose fields are accessible by name as well as index.  For example::
 
      >>> var_type = collections.namedtuple('variable',
@@ -1873,7 +1874,7 @@ changes, or look through the Subversion logs for all the details.
      variable(id=1, name='amplitude', type='int', size=4)
 
   Several places in the standard library that returned tuples have
-  been modified to return :class:`namedtuple` instances.  For example,
+  been modified to return :func:`namedtuple` instances.  For example,
   the :meth:`Decimal.as_tuple` method now returns a named tuple with
   :attr:`sign`, :attr:`digits`, and :attr:`exponent` fields.
 
@@ -2289,7 +2290,7 @@ changes, or look through the Subversion logs for all the details.
   (Contributed by Raymond Hettinger; :issue:`1861`.)
 
 * The :mod:`select` module now has wrapper functions
-  for the Linux :c:func:`epoll` and BSD :c:func:`kqueue` system calls.
+  for the Linux :c:func:`!epoll` and BSD :c:func:`!kqueue` system calls.
   :meth:`modify` method was added to the existing :class:`poll`
   objects; ``pollobj.modify(fd, eventmask)`` takes a file descriptor
   or file object and an event mask, modifying the recorded event mask
@@ -2328,7 +2329,7 @@ changes, or look through the Subversion logs for all the details.
   one for reading and one for writing.  The writable descriptor
   will be passed to :func:`set_wakeup_fd`, and the readable descriptor
   will be added to the list of descriptors monitored by the event loop via
-  :c:func:`select` or :c:func:`poll`.
+  :c:func:`!select` or :c:func:`!poll`.
   On receiving a signal, a byte will be written and the main event loop
   will be woken up, avoiding the need to poll.
 
@@ -2465,7 +2466,7 @@ changes, or look through the Subversion logs for all the details.
   (All changes contributed by Lars Gustäbel).
 
 * An optional ``timeout`` parameter was added to the
-  :class:`telnetlib.Telnet` class constructor, specifying a timeout
+  :class:`!telnetlib.Telnet` class constructor, specifying a timeout
   measured in seconds.  (Added by Facundo Batista.)
 
 * The :class:`tempfile.NamedTemporaryFile` class usually deletes
@@ -2982,7 +2983,7 @@ Changes to Python's build process and to the C API include:
 
 * Python now must be compiled with C89 compilers (after 19
   years!).  This means that the Python source tree has dropped its
-  own implementations of :c:func:`memmove` and :c:func:`strerror`, which
+  own implementations of :c:func:`!memmove` and :c:func:`!strerror`, which
   are in the C89 standard library.
 
 * Python 2.6 can be built with Microsoft Visual Studio 2008 (version
@@ -3012,11 +3013,11 @@ Changes to Python's build process and to the C API include:
   bug occurred if one thread closed a file object while another thread
   was reading from or writing to the object.  In 2.6 file objects
   have a reference count, manipulated by the
-  :c:func:`PyFile_IncUseCount` and :c:func:`PyFile_DecUseCount`
+  :c:func:`!PyFile_IncUseCount` and :c:func:`!PyFile_DecUseCount`
   functions.  File objects can't be closed unless the reference count
-  is zero.  :c:func:`PyFile_IncUseCount` should be called while the GIL
+  is zero.  :c:func:`!PyFile_IncUseCount` should be called while the GIL
   is still held, before carrying out an I/O operation using the
-  ``FILE *`` pointer, and :c:func:`PyFile_DecUseCount` should be called
+  ``FILE *`` pointer, and :c:func:`!PyFile_DecUseCount` should be called
   immediately after the GIL is re-acquired.
   (Contributed by Antoine Pitrou and Gregory P. Smith.)
 
@@ -3060,9 +3061,9 @@ Changes to Python's build process and to the C API include:
 
 * Some macros were renamed in both 3.0 and 2.6 to make it clearer that
   they are macros,
-  not functions.  :c:macro:`Py_Size()` became :c:macro:`Py_SIZE()`,
-  :c:macro:`Py_Type()` became :c:macro:`Py_TYPE()`, and
-  :c:macro:`Py_Refcnt()` became :c:macro:`Py_REFCNT()`.
+  not functions.  :c:macro:`!Py_Size()` became :c:macro:`Py_SIZE()`,
+  :c:macro:`!Py_Type()` became :c:macro:`Py_TYPE()`, and
+  :c:macro:`!Py_Refcnt()` became :c:macro:`Py_REFCNT()`.
   The mixed-case macros are still available
   in Python 2.6 for backward compatibility.
   (:issue:`1629`)
@@ -3135,7 +3136,7 @@ Port-Specific Changes: Windows
   registry reflection for 32-bit processes running on 64-bit systems.
   (:issue:`1753245`)
 
-* The :mod:`msilib` module's :class:`Record` object
+* The :mod:`!msilib` module's :class:`Record` object
   gained :meth:`GetInteger` and :meth:`GetString` methods that
   return field values as an integer or a string.
   (Contributed by Floris Bruynooghe; :issue:`2125`.)
diff --git a/Doc/whatsnew/2.7.rst b/Doc/whatsnew/2.7.rst
index 36afcb163f1afc..cf6d26859bb6a2 100644
--- a/Doc/whatsnew/2.7.rst
+++ b/Doc/whatsnew/2.7.rst
@@ -355,7 +355,7 @@ added as a more powerful replacement for the
 This means Python now supports three different modules for parsing
 command-line arguments: :mod:`getopt`, :mod:`optparse`, and
 :mod:`argparse`.  The :mod:`getopt` module closely resembles the C
-library's :c:func:`getopt` function, so it remains useful if you're writing a
+library's :c:func:`!getopt` function, so it remains useful if you're writing a
 Python prototype that will eventually be rewritten in C.
 :mod:`optparse` becomes redundant, but there are no plans to remove it
 because there are many scripts still using it, and there's no
@@ -858,9 +858,11 @@ Some smaller changes made to the core Python language are:
 
   .. XXX bytearray doesn't seem to be documented
 
-* When using ``@classmethod`` and ``@staticmethod`` to wrap
+* When using :class:`@classmethod <classmethod>` and
+  :class:`@staticmethod <staticmethod>` to wrap
   methods as class or static methods, the wrapper object now
-  exposes the wrapped function as their :attr:`__func__` attribute.
+  exposes the wrapped function as their :attr:`~method.__func__`
+  attribute.
   (Contributed by Amaury Forgeot d'Arc, after a suggestion by
   George Sakkis; :issue:`5982`.)
 
@@ -930,8 +932,8 @@ Optimizations
 Several performance enhancements have been added:
 
 * A new opcode was added to perform the initial setup for
-  :keyword:`with` statements, looking up the :meth:`__enter__` and
-  :meth:`__exit__` methods.  (Contributed by Benjamin Peterson.)
+  :keyword:`with` statements, looking up the :meth:`~object.__enter__` and
+  :meth:`~object.__exit__` methods.  (Contributed by Benjamin Peterson.)
 
 * The garbage collector now performs better for one common usage
   pattern: when many objects are being allocated without deallocating
@@ -1429,7 +1431,7 @@ changes, or look through the Subversion logs for all the details.
   become very large.
   (Contributed by Charles Cazabon; :issue:`6963`.)
 
-* The :mod:`nntplib` module now supports IPv6 addresses.
+* The :mod:`!nntplib` module now supports IPv6 addresses.
   (Contributed by Derek Morr; :issue:`1664`.)
 
 * New functions: the :mod:`os` module wraps the following POSIX system
@@ -1556,9 +1558,9 @@ changes, or look through the Subversion logs for all the details.
   :issue:`8484`.)
 
   The version of OpenSSL being used is now available as the module
-  attributes :data:`ssl.OPENSSL_VERSION` (a string),
-  :data:`ssl.OPENSSL_VERSION_INFO` (a 5-tuple), and
-  :data:`ssl.OPENSSL_VERSION_NUMBER` (an integer).  (Added by Antoine
+  attributes :const:`ssl.OPENSSL_VERSION` (a string),
+  :const:`ssl.OPENSSL_VERSION_INFO` (a 5-tuple), and
+  :const:`ssl.OPENSSL_VERSION_NUMBER` (an integer).  (Added by Antoine
   Pitrou; :issue:`8321`.)
 
 * The :mod:`struct` module will no longer silently ignore overflow
@@ -2152,16 +2154,16 @@ Changes to Python's build process and to the C API include:
 
 * New function: stemming from the rewrite of string-to-float conversion,
   a new :c:func:`PyOS_string_to_double` function was added.  The old
-  :c:func:`PyOS_ascii_strtod` and :c:func:`PyOS_ascii_atof` functions
+  :c:func:`!PyOS_ascii_strtod` and :c:func:`!PyOS_ascii_atof` functions
   are now deprecated.
 
-* New function: :c:func:`PySys_SetArgvEx` sets the value of
+* New function: :c:func:`!PySys_SetArgvEx` sets the value of
   ``sys.argv`` and can optionally update ``sys.path`` to include the
   directory containing the script named by ``sys.argv[0]`` depending
   on the value of an *updatepath* parameter.
 
   This function was added to close a security hole for applications
-  that embed Python.  The old function, :c:func:`PySys_SetArgv`, would
+  that embed Python.  The old function, :c:func:`!PySys_SetArgv`, would
   always update ``sys.path``, and sometimes it would add the current
   directory.  This meant that, if you ran an application embedding
   Python in a directory controlled by someone else, attackers could
@@ -2169,8 +2171,8 @@ Changes to Python's build process and to the C API include:
   :file:`os.py`) that your application would then import and run.
 
   If you maintain a C/C++ application that embeds Python, check
-  whether you're calling :c:func:`PySys_SetArgv` and carefully consider
-  whether the application should be using :c:func:`PySys_SetArgvEx`
+  whether you're calling :c:func:`!PySys_SetArgv` and carefully consider
+  whether the application should be using :c:func:`!PySys_SetArgvEx`
   with *updatepath* set to false.
 
   Security issue reported as `CVE-2008-5983
@@ -2195,13 +2197,13 @@ Changes to Python's build process and to the C API include:
 
   .. XXX these macros don't seem to be described in the c-api docs.
 
-* Removed function: :c:macro:`PyEval_CallObject` is now only available
+* Removed function: :c:func:`!PyEval_CallObject` is now only available
   as a macro.  A function version was being kept around to preserve
   ABI linking compatibility, but that was in 1997; it can certainly be
   deleted by now.  (Removed by Antoine Pitrou; :issue:`8276`.)
 
-* New format codes: the :c:func:`PyFormat_FromString`,
-  :c:func:`PyFormat_FromStringV`, and :c:func:`PyErr_Format` functions now
+* New format codes: the :c:func:`!PyString_FromFormat`,
+  :c:func:`!PyString_FromFormatV`, and :c:func:`PyErr_Format` functions now
   accept ``%lld`` and ``%llu`` format codes for displaying
   C's :c:expr:`long long` types.
   (Contributed by Mark Dickinson; :issue:`7228`.)
@@ -2231,7 +2233,7 @@ Changes to Python's build process and to the C API include:
 
 * When using the :c:type:`PyMemberDef` structure to define attributes
   of a type, Python will no longer let you try to delete or set a
-  :const:`T_STRING_INPLACE` attribute.
+  :c:macro:`T_STRING_INPLACE` attribute.
 
   .. rev 79644
 
@@ -2287,10 +2289,10 @@ object, and then get the ``void *`` pointer, which will usually point
 to an array of pointers to the module's various API functions.
 
 There is an existing data type already used for this,
-:c:type:`PyCObject`, but it doesn't provide type safety.  Evil code
+:c:type:`!PyCObject`, but it doesn't provide type safety.  Evil code
 written in pure Python could cause a segmentation fault by taking a
-:c:type:`PyCObject` from module A and somehow substituting it for the
-:c:type:`PyCObject` in module B.   Capsules know their own name,
+:c:type:`!PyCObject` from module A and somehow substituting it for the
+:c:type:`!PyCObject` in module B.   Capsules know their own name,
 and getting the pointer requires providing the name:
 
 .. code-block:: c
@@ -2310,10 +2312,10 @@ detect the mismatched name and return false.  Refer to
 :ref:`using-capsules` for more information on using these objects.
 
 Python 2.7 now uses capsules internally to provide various
-extension-module APIs, but the :c:func:`PyCObject_AsVoidPtr` was
+extension-module APIs, but the :c:func:`!PyCObject_AsVoidPtr` was
 modified to handle capsules, preserving compile-time compatibility
-with the :c:type:`CObject` interface.  Use of
-:c:func:`PyCObject_AsVoidPtr` will signal a
+with the :c:type:`!PyCObject` interface.  Use of
+:c:func:`!PyCObject_AsVoidPtr` will signal a
 :exc:`PendingDeprecationWarning`, which is silent by default.
 
 Implemented in Python 3.1 and backported to 2.7 by Larry Hastings;
@@ -2368,7 +2370,7 @@ Port-Specific Changes: Mac OS X
   installation and a user-installed copy of the same version.
   (Changed by Ronald Oussoren; :issue:`4865`.)
 
-   .. versionchanged:: 2.7.13
+  .. versionchanged:: 2.7.13
 
      As of 2.7.13, this change was removed.
      ``/Library/Python/2.7/site-packages``, the site-packages directory
@@ -2383,8 +2385,8 @@ Port-Specific Changes: Mac OS X
 Port-Specific Changes: FreeBSD
 -----------------------------------
 
-* FreeBSD 7.1's :const:`SO_SETFIB` constant, used with
-  :func:`~socket.getsockopt`/:func:`~socket.setsockopt` to select an
+* FreeBSD 7.1's :const:`SO_SETFIB` constant, used with the :func:`~socket.socket` methods
+  :func:`~socket.socket.getsockopt`/:func:`~socket.socket.setsockopt` to select an
   alternate routing table, is now available in the :mod:`socket`
   module.  (Added by Kyle VanderBeek; :issue:`8235`.)
 
@@ -2404,7 +2406,7 @@ Other Changes and Fixes
   :issue:`5464`.)
 
 * When importing a module from a :file:`.pyc` or :file:`.pyo` file
-  with an existing :file:`.py` counterpart, the :attr:`co_filename`
+  with an existing :file:`.py` counterpart, the :attr:`~codeobject.co_filename`
   attributes of the resulting code objects are overwritten when the
   original filename is obsolete.  This can happen if the file has been
   renamed, moved, or is accessed through different paths.  (Patch by
@@ -2449,13 +2451,13 @@ that may require changes to your code:
   (Changed by Eric Smith; :issue:`5920`.)
 
 * Because of an optimization for the :keyword:`with` statement, the special
-  methods :meth:`__enter__` and :meth:`__exit__` must belong to the object's
+  methods :meth:`~object.__enter__` and :meth:`~object.__exit__` must belong to the object's
   type, and cannot be directly attached to the object's instance.  This
   affects new-style classes (derived from :class:`object`) and C extension
   types.  (:issue:`6101`.)
 
 * Due to a bug in Python 2.6, the *exc_value* parameter to
-  :meth:`__exit__` methods was often the string representation of the
+  :meth:`~object.__exit__` methods was often the string representation of the
   exception, not an instance.  This was fixed in 2.7, so *exc_value*
   will be an instance as expected.  (Fixed by Florent Xicluna;
   :issue:`7853`.)
@@ -2540,16 +2542,16 @@ For C extensions:
   instead of triggering a :exc:`DeprecationWarning` (:issue:`5080`).
 
 * Use the new :c:func:`PyOS_string_to_double` function instead of the old
-  :c:func:`PyOS_ascii_strtod` and :c:func:`PyOS_ascii_atof` functions,
+  :c:func:`!PyOS_ascii_strtod` and :c:func:`!PyOS_ascii_atof` functions,
   which are now deprecated.
 
 For applications that embed Python:
 
-* The :c:func:`PySys_SetArgvEx` function was added, letting
+* The :c:func:`!PySys_SetArgvEx` function was added, letting
   applications close a security hole when the existing
-  :c:func:`PySys_SetArgv` function was used.  Check whether you're
-  calling :c:func:`PySys_SetArgv` and carefully consider whether the
-  application should be using :c:func:`PySys_SetArgvEx` with
+  :c:func:`!PySys_SetArgv` function was used.  Check whether you're
+  calling :c:func:`!PySys_SetArgv` and carefully consider whether the
+  application should be using :c:func:`!PySys_SetArgvEx` with
   *updatepath* set to false.
 
 .. ======================================================================
diff --git a/Doc/whatsnew/3.0.rst b/Doc/whatsnew/3.0.rst
index f9ac13036cbc8d..b0c2529e780213 100644
--- a/Doc/whatsnew/3.0.rst
+++ b/Doc/whatsnew/3.0.rst
@@ -789,7 +789,7 @@ Operators And Special Methods
   :attr:`__doc__`, :attr:`__globals__`, :attr:`~definition.__name__`,
   respectively.
 
-* :meth:`__nonzero__` is now :meth:`__bool__`.
+* :meth:`!__nonzero__` is now :meth:`~object.__bool__`.
 
 Builtins
 --------
@@ -865,8 +865,8 @@ to the C API.
 
 * No more C API support for restricted execution.
 
-* :c:func:`PyNumber_Coerce`, :c:func:`PyNumber_CoerceEx`,
-  :c:func:`PyMember_Get`, and :c:func:`PyMember_Set` C APIs are removed.
+* :c:func:`!PyNumber_Coerce`, :c:func:`!PyNumber_CoerceEx`,
+  :c:func:`!PyMember_Get`, and :c:func:`!PyMember_Set` C APIs are removed.
 
 * New C API :c:func:`PyImport_ImportModuleNoBlock`, works like
   :c:func:`PyImport_ImportModule` but won't block on the import lock
@@ -875,7 +875,7 @@ to the C API.
 * Renamed the boolean conversion C-level slot and method:
   ``nb_nonzero`` is now ``nb_bool``.
 
-* Removed :c:macro:`METH_OLDARGS` and :c:macro:`WITH_CYCLE_GC` from the C API.
+* Removed :c:macro:`!METH_OLDARGS` and :c:macro:`!WITH_CYCLE_GC` from the C API.
 
 .. ======================================================================
 
@@ -911,7 +911,7 @@ best strategy is the following:
    tests still pass.
 
 3. Run the ``2to3`` source-to-source translator over your source code
-   tree.  (See :ref:`2to3-reference` for more on this tool.)  Run the
+   tree.  Run the
    result of the translation under Python 3.0.  Manually fix up any
    remaining issues, fixing problems until all tests pass again.
 
diff --git a/Doc/whatsnew/3.1.rst b/Doc/whatsnew/3.1.rst
index fba8816bb243a3..e237179f4b1829 100644
--- a/Doc/whatsnew/3.1.rst
+++ b/Doc/whatsnew/3.1.rst
@@ -370,14 +370,14 @@ New, Improved, and Deprecated Modules
 * The :mod:`io` module has three new constants for the :meth:`seek`
   method :data:`SEEK_SET`, :data:`SEEK_CUR`, and :data:`SEEK_END`.
 
-* The :attr:`sys.version_info` tuple is now a named tuple::
+* The :data:`sys.version_info` tuple is now a named tuple::
 
     >>> sys.version_info
     sys.version_info(major=3, minor=1, micro=0, releaselevel='alpha', serial=2)
 
   (Contributed by Ross Light; :issue:`4285`.)
 
-* The :mod:`nntplib` and :mod:`imaplib` modules now support IPv6.
+* The :mod:`!nntplib` and :mod:`imaplib` modules now support IPv6.
 
   (Contributed by Derek Morr; :issue:`1655` and :issue:`1664`.)
 
@@ -486,7 +486,7 @@ Changes to Python's build process and to the C API include:
 
   Apart from the performance improvements this change should be invisible to
   end users, with one exception: for testing and debugging purposes there's a
-  new :attr:`sys.int_info` that provides information about the
+  new :data:`sys.int_info` that provides information about the
   internal format, giving the number of bits per digit and the size in bytes
   of the C type used to store each digit::
 
@@ -501,16 +501,16 @@ Changes to Python's build process and to the C API include:
 
   (Contributed by Mark Dickinson and Lisandro Dalcrin; :issue:`5175`.)
 
-* Deprecated :c:func:`PyNumber_Int`.  Use :c:func:`PyNumber_Long` instead.
+* Deprecated :c:func:`!PyNumber_Int`.  Use :c:func:`PyNumber_Long` instead.
 
   (Contributed by Mark Dickinson; :issue:`4910`.)
 
 * Added a new :c:func:`PyOS_string_to_double` function to replace the
-  deprecated functions :c:func:`PyOS_ascii_strtod` and :c:func:`PyOS_ascii_atof`.
+  deprecated functions :c:func:`!PyOS_ascii_strtod` and :c:func:`!PyOS_ascii_atof`.
 
   (Contributed by Mark Dickinson; :issue:`5914`.)
 
-* Added :c:type:`PyCapsule` as a replacement for the :c:type:`PyCObject` API.
+* Added :c:type:`PyCapsule` as a replacement for the :c:type:`!PyCObject` API.
   The principal difference is that the new type has a well defined interface
   for passing typing safety information and a less complicated signature
   for calling a destructor.  The old type had a problematic API and is now
diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index 661eeaedbfc0d0..2da90b7ed55744 100644
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -221,116 +221,116 @@ have been incorporated. Some of the most notable ones are as follows:
 
 * Missing ``:`` before blocks:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> if rocket.position > event_horizon
-          File "<stdin>", line 1
-            if rocket.position > event_horizon
-                                              ^
-        SyntaxError: expected ':'
+      >>> if rocket.position > event_horizon
+        File "<stdin>", line 1
+          if rocket.position > event_horizon
+                                            ^
+      SyntaxError: expected ':'
 
-    (Contributed by Pablo Galindo in :issue:`42997`.)
+  (Contributed by Pablo Galindo in :issue:`42997`.)
 
 * Unparenthesised tuples in comprehensions targets:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> {x,y for x,y in zip('abcd', '1234')}
-          File "<stdin>", line 1
-            {x,y for x,y in zip('abcd', '1234')}
-             ^
-        SyntaxError: did you forget parentheses around the comprehension target?
+      >>> {x,y for x,y in zip('abcd', '1234')}
+        File "<stdin>", line 1
+          {x,y for x,y in zip('abcd', '1234')}
+           ^
+      SyntaxError: did you forget parentheses around the comprehension target?
 
-    (Contributed by Pablo Galindo in :issue:`43017`.)
+  (Contributed by Pablo Galindo in :issue:`43017`.)
 
 * Missing commas in collection literals and between expressions:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> items = {
-        ... x: 1,
-        ... y: 2
-        ... z: 3,
-          File "<stdin>", line 3
-            y: 2
-               ^
-        SyntaxError: invalid syntax. Perhaps you forgot a comma?
+      >>> items = {
+      ... x: 1,
+      ... y: 2
+      ... z: 3,
+        File "<stdin>", line 3
+          y: 2
+             ^
+      SyntaxError: invalid syntax. Perhaps you forgot a comma?
 
-    (Contributed by Pablo Galindo in :issue:`43822`.)
+  (Contributed by Pablo Galindo in :issue:`43822`.)
 
 * Multiple Exception types without parentheses:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> try:
-        ...     build_dyson_sphere()
-        ... except NotEnoughScienceError, NotEnoughResourcesError:
-          File "<stdin>", line 3
-            except NotEnoughScienceError, NotEnoughResourcesError:
-                   ^
-        SyntaxError: multiple exception types must be parenthesized
+      >>> try:
+      ...     build_dyson_sphere()
+      ... except NotEnoughScienceError, NotEnoughResourcesError:
+        File "<stdin>", line 3
+          except NotEnoughScienceError, NotEnoughResourcesError:
+                 ^
+      SyntaxError: multiple exception types must be parenthesized
 
-    (Contributed by Pablo Galindo in :issue:`43149`.)
+  (Contributed by Pablo Galindo in :issue:`43149`.)
 
 * Missing ``:`` and values in dictionary literals:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> values = {
-        ... x: 1,
-        ... y: 2,
-        ... z:
-        ... }
-          File "<stdin>", line 4
-            z:
-             ^
-        SyntaxError: expression expected after dictionary key and ':'
+      >>> values = {
+      ... x: 1,
+      ... y: 2,
+      ... z:
+      ... }
+        File "<stdin>", line 4
+          z:
+           ^
+      SyntaxError: expression expected after dictionary key and ':'
 
-        >>> values = {x:1, y:2, z w:3}
-          File "<stdin>", line 1
-            values = {x:1, y:2, z w:3}
-                                ^
-        SyntaxError: ':' expected after dictionary key
+      >>> values = {x:1, y:2, z w:3}
+        File "<stdin>", line 1
+          values = {x:1, y:2, z w:3}
+                              ^
+      SyntaxError: ':' expected after dictionary key
 
-    (Contributed by Pablo Galindo in :issue:`43823`.)
+  (Contributed by Pablo Galindo in :issue:`43823`.)
 
 * ``try`` blocks without ``except`` or ``finally`` blocks:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> try:
-        ...     x = 2
-        ... something = 3
-          File "<stdin>", line 3
-            something  = 3
-            ^^^^^^^^^
-        SyntaxError: expected 'except' or 'finally' block
+      >>> try:
+      ...     x = 2
+      ... something = 3
+        File "<stdin>", line 3
+          something  = 3
+          ^^^^^^^^^
+      SyntaxError: expected 'except' or 'finally' block
 
-    (Contributed by Pablo Galindo in :issue:`44305`.)
+  (Contributed by Pablo Galindo in :issue:`44305`.)
 
 * Usage of ``=`` instead of ``==`` in comparisons:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> if rocket.position = event_horizon:
-          File "<stdin>", line 1
-            if rocket.position = event_horizon:
-                               ^
-        SyntaxError: cannot assign to attribute here. Maybe you meant '==' instead of '='?
+      >>> if rocket.position = event_horizon:
+        File "<stdin>", line 1
+          if rocket.position = event_horizon:
+                             ^
+      SyntaxError: cannot assign to attribute here. Maybe you meant '==' instead of '='?
 
-    (Contributed by Pablo Galindo in :issue:`43797`.)
+  (Contributed by Pablo Galindo in :issue:`43797`.)
 
 * Usage of ``*`` in f-strings:
 
-    .. code-block:: python
+  .. code-block:: python
 
-        >>> f"Black holes {*all_black_holes} and revelations"
-          File "<stdin>", line 1
-            (*all_black_holes)
-             ^
-        SyntaxError: f-string: cannot use starred expression here
+      >>> f"Black holes {*all_black_holes} and revelations"
+        File "<stdin>", line 1
+          (*all_black_holes)
+           ^
+      SyntaxError: f-string: cannot use starred expression here
 
-    (Contributed by Pablo Galindo in :issue:`41064`.)
+  (Contributed by Pablo Galindo in :issue:`41064`.)
 
 IndentationErrors
 ~~~~~~~~~~~~~~~~~
@@ -365,10 +365,10 @@ raised from:
 
 (Contributed by Pablo Galindo in :issue:`38530`.)
 
-   .. warning::
-      Notice this won't work if :c:func:`PyErr_Display` is not called to display the error
-      which can happen if some other custom error display function is used. This is a common
-      scenario in some REPLs like IPython.
+.. warning::
+   Notice this won't work if :c:func:`PyErr_Display` is not called to display the error
+   which can happen if some other custom error display function is used. This is a common
+   scenario in some REPLs like IPython.
 
 NameErrors
 ~~~~~~~~~~
@@ -387,10 +387,10 @@ was raised from:
 
 (Contributed by Pablo Galindo in :issue:`38530`.)
 
-   .. warning::
-      Notice this won't work if :c:func:`PyErr_Display` is not called to display the error,
-      which can happen if some other custom error display function is used. This is a common
-      scenario in some REPLs like IPython.
+.. warning::
+   Notice this won't work if :c:func:`PyErr_Display` is not called to display the error,
+   which can happen if some other custom error display function is used. This is a common
+   scenario in some REPLs like IPython.
 
 
 PEP 626: Precise line numbers for debugging and other tools
@@ -399,9 +399,11 @@ PEP 626: Precise line numbers for debugging and other tools
 PEP 626 brings more precise and reliable line numbers for debugging, profiling and coverage tools.
 Tracing events, with the correct line number, are generated for all lines of code executed and only for lines of code that are executed.
 
-The ``f_lineno`` attribute of frame objects will always contain the expected line number.
+The :attr:`~frame.f_lineno` attribute of frame objects will always contain the
+expected line number.
 
-The ``co_lnotab`` attribute of code objects is deprecated and will be removed in 3.12.
+The :attr:`~codeobject.co_lnotab` attribute of code objects is deprecated and
+will be removed in 3.12.
 Code that needs to convert from offset to line number should use the new ``co_lines()`` method instead.
 
 PEP 634: Structural Pattern Matching
@@ -433,16 +435,16 @@ A match statement takes an expression and compares its value to successive
 patterns given as one or more case blocks.  Specifically, pattern matching
 operates by:
 
-    1. using data with type and shape (the ``subject``)
-    2. evaluating the ``subject`` in the ``match`` statement
-    3. comparing the subject with each pattern in a ``case`` statement
-       from top to bottom until a match is confirmed.
-    4. executing the action associated with the pattern of the confirmed
-       match
-    5. If an exact match is not confirmed, the last case, a wildcard ``_``,
-       if provided, will be used as the matching case. If an exact match is
-       not confirmed and a wildcard case does not exist, the entire match
-       block is a no-op.
+1. using data with type and shape (the ``subject``)
+2. evaluating the ``subject`` in the ``match`` statement
+3. comparing the subject with each pattern in a ``case`` statement
+   from top to bottom until a match is confirmed.
+4. executing the action associated with the pattern of the confirmed
+   match
+5. If an exact match is not confirmed, the last case, a wildcard ``_``,
+   if provided, will be used as the matching case. If an exact match is
+   not confirmed and a wildcard case does not exist, the entire match
+   block is a no-op.
 
 Declarative approach
 ~~~~~~~~~~~~~~~~~~~~
@@ -878,7 +880,7 @@ Other Language Changes
   (Contributed by Raymond Hettinger in :issue:`43475`.)
 
 * A :exc:`SyntaxError` (instead of a :exc:`NameError`) will be raised when deleting
-  the :const:`__debug__` constant.  (Contributed by Dong-hee Na in :issue:`45000`.)
+  the :const:`__debug__` constant.  (Contributed by Donghee Na in :issue:`45000`.)
 
 * :exc:`SyntaxError` exceptions now have ``end_lineno`` and
   ``end_offset`` attributes.  They will be ``None`` if not determined.
@@ -887,7 +889,7 @@ Other Language Changes
 New Modules
 ===========
 
-* None yet.
+* None.
 
 
 Improved Modules
@@ -1253,9 +1255,9 @@ descriptors without copying between kernel address space and user
 address space, where one of the file descriptors must refer to a
 pipe. (Contributed by Pablo Galindo in :issue:`41625`.)
 
-Add :data:`~os.O_EVTONLY`, :data:`~os.O_FSYNC`, :data:`~os.O_SYMLINK`
-and :data:`~os.O_NOFOLLOW_ANY` for macOS.
-(Contributed by Dong-hee Na in :issue:`43106`.)
+Add :const:`~os.O_EVTONLY`, :const:`~os.O_FSYNC`, :const:`~os.O_SYMLINK`
+and :const:`~os.O_NOFOLLOW_ANY` for macOS.
+(Contributed by Donghee Na in :issue:`43106`.)
 
 os.path
 -------
@@ -1319,7 +1321,7 @@ objects in the tree returned by :func:`pyclbr.readline` and
 shelve
 ------
 
-The :mod:`shelve` module now uses :data:`pickle.DEFAULT_PROTOCOL` by default
+The :mod:`shelve` module now uses :const:`pickle.DEFAULT_PROTOCOL` by default
 instead of :mod:`pickle` protocol ``3`` when creating shelves.
 (Contributed by Zackery Spytz in :issue:`34204`.)
 
@@ -1356,7 +1358,7 @@ The ssl module requires OpenSSL 1.1.1 or newer.
 (Contributed by Christian Heimes in :pep:`644` and :issue:`43669`.)
 
 The ssl module has preliminary support for OpenSSL 3.0.0 and new option
-:data:`~ssl.OP_IGNORE_UNEXPECTED_EOF`.
+:const:`~ssl.OP_IGNORE_UNEXPECTED_EOF`.
 (Contributed by Christian Heimes in :issue:`38820`, :issue:`43794`,
 :issue:`43788`, :issue:`43791`, :issue:`43799`, :issue:`43920`,
 :issue:`43789`, and :issue:`43811`.)
@@ -1387,7 +1389,7 @@ Add a *timeout* parameter to the :func:`ssl.get_server_certificate` function.
 The ssl module uses heap-types and multi-phase initialization.
 (Contributed by Christian Heimes in :issue:`42333`.)
 
-A new verify flag :data:`~ssl.VERIFY_X509_PARTIAL_CHAIN` has been added.
+A new verify flag :const:`~ssl.VERIFY_X509_PARTIAL_CHAIN` has been added.
 (Contributed by l0x in :issue:`40849`.)
 
 sqlite3
@@ -1413,7 +1415,7 @@ _thread
 -------
 
 :func:`_thread.interrupt_main` now takes an optional signal number to
-simulate (the default is still :data:`signal.SIGINT`).
+simulate (the default is still :const:`signal.SIGINT`).
 (Contributed by Antoine Pitrou in :issue:`43356`.)
 
 threading
@@ -1508,7 +1510,7 @@ query parameter separators in :func:`urllib.parse.parse_qs` and
 :func:`urllib.parse.parse_qsl`.  Due to security concerns, and to conform with
 newer W3C recommendations, this has been changed to allow only a single
 separator key, with ``&`` as the default.  This change also affects
-:func:`cgi.parse` and :func:`cgi.parse_multipart` as they use the affected
+:func:`!cgi.parse` and :func:`!cgi.parse_multipart` as they use the affected
 functions internally.  For more details, please see their respective
 documentation.
 (Contributed by Adam Goldschmidt, Senthil Kumaran and Ken Jin in :issue:`42967`.)
@@ -1582,7 +1584,7 @@ Optimizations
 
 * The following built-in functions now support the faster :pep:`590` vectorcall calling convention:
   :func:`map`, :func:`filter`, :func:`reversed`, :func:`bool` and :func:`float`.
-  (Contributed by Dong-hee Na and Jeroen Demeyer in :issue:`43575`, :issue:`43287`, :issue:`41922`, :issue:`41873` and :issue:`41870`.)
+  (Contributed by Donghee Na and Jeroen Demeyer in :issue:`43575`, :issue:`43287`, :issue:`41922`, :issue:`41873` and :issue:`41870`.)
 
 * :class:`BZ2File` performance is improved by removing internal ``RLock``.
   This makes :class:`BZ2File` thread unsafe in the face of multiple simultaneous
@@ -1757,8 +1759,8 @@ Deprecated
   * :data:`~ssl.PROTOCOL_SSLv2`, :data:`~ssl.PROTOCOL_SSLv3`,
     :data:`~ssl.PROTOCOL_SSLv23`, :data:`~ssl.PROTOCOL_TLSv1`,
     :data:`~ssl.PROTOCOL_TLSv1_1`, :data:`~ssl.PROTOCOL_TLSv1_2`, and
-    :data:`~ssl.PROTOCOL_TLS` are deprecated in favor of
-    :data:`~ssl.PROTOCOL_TLS_CLIENT` and :data:`~ssl.PROTOCOL_TLS_SERVER`
+    :const:`~ssl.PROTOCOL_TLS` are deprecated in favor of
+    :const:`~ssl.PROTOCOL_TLS_CLIENT` and :const:`~ssl.PROTOCOL_TLS_SERVER`
 
   * :func:`~ssl.wrap_socket` is replaced by :meth:`ssl.SSLContext.wrap_socket`
 
@@ -1817,10 +1819,10 @@ Removed
   scheduled to be removed in Python 3.6, but such removals were delayed until
   after Python 2.7 EOL. Existing users should copy whatever classes they use
   into their code.
-  (Contributed by Dong-hee Na and Terry J. Reedy in :issue:`42299`.)
+  (Contributed by Donghee Na and Terry J. Reedy in :issue:`42299`.)
 
-* Removed the :c:func:`PyModule_GetWarningsModule` function that was useless
-  now due to the _warnings module was converted to a builtin module in 2.6.
+* Removed the :c:func:`!PyModule_GetWarningsModule` function that was useless
+  now due to the :mod:`!_warnings` module was converted to a builtin module in 2.6.
   (Contributed by Hai Shi in :issue:`42599`.)
 
 * Remove deprecated aliases to :ref:`collections-abstract-base-classes` from
@@ -1959,11 +1961,11 @@ Changes in the C API
        source_buf = PyBytes_AsString(source_bytes_object);
        code = Py_CompileString(source_buf, filename, Py_file_input);
 
-  * For ``FrameObject`` objects, the ``f_lasti`` member now represents a wordcode
+  * For ``FrameObject`` objects, the :attr:`~frame.f_lasti` member now represents a wordcode
     offset instead of a simple offset into the bytecode string. This means that this
     number needs to be multiplied by 2 to be used with APIs that expect a byte offset
     instead (like :c:func:`PyCode_Addr2Line` for example). Notice as well that the
-    ``f_lasti`` member of ``FrameObject`` objects is not considered stable: please
+    :attr:`!f_lasti` member of ``FrameObject`` objects is not considered stable: please
     use :c:func:`PyFrame_GetLineNumber` instead.
 
 CPython bytecode changes
@@ -2124,11 +2126,11 @@ New Features
   These functions allow to activate, deactivate and query the state of the garbage collector from C code without
   having to import the :mod:`gc` module.
 
-* Add a new :c:data:`Py_TPFLAGS_DISALLOW_INSTANTIATION` type flag to disallow
+* Add a new :c:macro:`Py_TPFLAGS_DISALLOW_INSTANTIATION` type flag to disallow
   creating type instances.
   (Contributed by Victor Stinner in :issue:`43916`.)
 
-* Add a new :c:data:`Py_TPFLAGS_IMMUTABLETYPE` type flag for creating immutable
+* Add a new :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` type flag for creating immutable
   type objects: type attributes cannot be set nor deleted.
   (Contributed by Victor Stinner and Erlend E. Aasland in :issue:`43908`.)
 
@@ -2187,9 +2189,9 @@ Porting to Python 3.10
   been included directly, consider including ``Python.h`` instead.
   (Contributed by Nicholas Sim in :issue:`35134`.)
 
-* Use the :c:data:`Py_TPFLAGS_IMMUTABLETYPE` type flag to create immutable type
-  objects. Do not rely on :c:data:`Py_TPFLAGS_HEAPTYPE` to decide if a type
-  object is mutable or not; check if :c:data:`Py_TPFLAGS_IMMUTABLETYPE` is set
+* Use the :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` type flag to create immutable type
+  objects. Do not rely on :c:macro:`Py_TPFLAGS_HEAPTYPE` to decide if a type
+  object is mutable or not; check if :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` is set
   instead.
   (Contributed by Victor Stinner and Erlend E. Aasland in :issue:`43908`.)
 
@@ -2211,16 +2213,16 @@ Removed
 * Removed ``Py_UNICODE_str*`` functions manipulating ``Py_UNICODE*`` strings.
   (Contributed by Inada Naoki in :issue:`41123`.)
 
-   * ``Py_UNICODE_strlen``: use :c:func:`PyUnicode_GetLength` or
-     :c:macro:`PyUnicode_GET_LENGTH`
-   * ``Py_UNICODE_strcat``: use :c:func:`PyUnicode_CopyCharacters` or
-     :c:func:`PyUnicode_FromFormat`
-   * ``Py_UNICODE_strcpy``, ``Py_UNICODE_strncpy``: use
-     :c:func:`PyUnicode_CopyCharacters` or :c:func:`PyUnicode_Substring`
-   * ``Py_UNICODE_strcmp``: use :c:func:`PyUnicode_Compare`
-   * ``Py_UNICODE_strncmp``: use :c:func:`PyUnicode_Tailmatch`
-   * ``Py_UNICODE_strchr``, ``Py_UNICODE_strrchr``: use
-     :c:func:`PyUnicode_FindChar`
+  * ``Py_UNICODE_strlen``: use :c:func:`PyUnicode_GetLength` or
+    :c:macro:`PyUnicode_GET_LENGTH`
+  * ``Py_UNICODE_strcat``: use :c:func:`PyUnicode_CopyCharacters` or
+    :c:func:`PyUnicode_FromFormat`
+  * ``Py_UNICODE_strcpy``, ``Py_UNICODE_strncpy``: use
+    :c:func:`PyUnicode_CopyCharacters` or :c:func:`PyUnicode_Substring`
+  * ``Py_UNICODE_strcmp``: use :c:func:`PyUnicode_Compare`
+  * ``Py_UNICODE_strncmp``: use :c:func:`PyUnicode_Tailmatch`
+  * ``Py_UNICODE_strchr``, ``Py_UNICODE_strrchr``: use
+    :c:func:`PyUnicode_FindChar`
 
 * Removed ``PyUnicode_GetMax()``. Please migrate to new (:pep:`393`) APIs.
   (Contributed by Inada Naoki in :issue:`41103`.)
diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst
index 7a479c6e56a9f0..8db133b90a7a4b 100644
--- a/Doc/whatsnew/3.11.rst
+++ b/Doc/whatsnew/3.11.rst
@@ -45,7 +45,7 @@
    when researching a change.
 
 This article explains the new features in Python 3.11, compared to 3.10.
-
+Python 3.11 was released on October 24, 2022.
 For full details, see the :ref:`changelog <changelog>`.
 
 
@@ -218,7 +218,7 @@ Windows ``py.exe`` launcher improvements
 
 The copy of the :ref:`launcher` included with Python 3.11 has been significantly
 updated. It now supports company/tag syntax as defined in :pep:`514` using the
-``-V:<company>/<tag>`` argument instead of the limited ``-<major>.<minor>``.
+:samp:`-V:{<company>}/{<tag>}` argument instead of the limited :samp:`-{<major>}.{<minor>}`.
 This allows launching distributions other than ``PythonCore``,
 the one hosted on `python.org <https://www.python.org>`_.
 
@@ -227,8 +227,8 @@ installs will be searched. For example, ``-V:OtherPython/`` will select the
 "best" tag registered for ``OtherPython``, while ``-V:3.11`` or ``-V:/3.11``
 will select the "best" distribution with tag ``3.11``.
 
-When using the legacy ``-<major>``, ``-<major>.<minor>``,
-``-<major>-<bitness>`` or ``-<major>.<minor>-<bitness>`` arguments,
+When using the legacy :samp:`-{<major>}`, :samp:`-{<major>}.{<minor>}`,
+:samp:`-{<major>}-{<bitness>}` or :samp:`-{<major>}.{<minor>}-{<bitness>}` arguments,
 all existing behaviour should be preserved from past versions,
 and only releases from ``PythonCore`` will be selected.
 However, the ``-64`` suffix now implies "not 32-bit" (not necessarily x86-64),
@@ -459,6 +459,10 @@ Other Language Changes
   :class:`collections.OrderedDict`, :class:`collections.deque`,
   :class:`weakref.WeakSet`, and :class:`datetime.tzinfo` now copies and
   pickles instance attributes implemented as :term:`slots <__slots__>`.
+  This change has an unintended side effect: It trips up a small minority
+  of existing Python projects not expecting :meth:`object.__getstate__` to
+  exist. See the later comments on :gh:`70766` for discussions of what
+  workarounds such code may need.
   (Contributed by Serhiy Storchaka in :issue:`26579`.)
 
 .. _whatsnew311-pythonsafepath:
@@ -495,7 +499,7 @@ Other CPython Implementation Changes
 * The special methods :meth:`~object.__complex__` for :class:`complex`
   and :meth:`~object.__bytes__` for :class:`bytes` are implemented to support
   the :class:`typing.SupportsComplex` and :class:`typing.SupportsBytes` protocols.
-  (Contributed by Mark Dickinson and Dong-hee Na in :issue:`24234`.)
+  (Contributed by Mark Dickinson and Donghee Na in :issue:`24234`.)
 
 * ``siphash13`` is added as a new internal hashing algorithm.
   It has similar security properties as ``siphash24``,
@@ -640,7 +644,7 @@ dataclasses
 datetime
 --------
 
-* Add :attr:`datetime.UTC`, a convenience alias for
+* Add :const:`datetime.UTC`, a convenience alias for
   :attr:`datetime.timezone.utc`. (Contributed by Kabir Kwatra in :gh:`91973`.)
 
 * :meth:`datetime.date.fromisoformat`, :meth:`datetime.time.fromisoformat` and
@@ -690,7 +694,7 @@ enum
 * Added the :func:`~enum.global_enum` enum decorator,
   which adjusts :meth:`~object.__repr__` and :meth:`~object.__str__`
   to show values as members of their module rather than the enum class.
-  For example, ``'re.ASCII'`` for the :data:`~re.ASCII` member
+  For example, ``'re.ASCII'`` for the :const:`~re.ASCII` member
   of :class:`re.RegexFlag` rather than ``'RegexFlag.ASCII'``.
 
 * Enhanced :class:`~enum.Flag` to support
@@ -893,7 +897,7 @@ os
 
 * On Windows, :func:`os.urandom` now uses ``BCryptGenRandom()``,
   instead of ``CryptGenRandom()`` which is deprecated.
-  (Contributed by Dong-hee Na in :issue:`44611`.)
+  (Contributed by Donghee Na in :issue:`44611`.)
 
 
 .. _whatsnew311-pathlib:
@@ -1063,8 +1067,8 @@ threading
 
 * On Unix, if the ``sem_clockwait()`` function is available in the C library
   (glibc 2.30 and newer), the :meth:`threading.Lock.acquire` method now uses
-  the monotonic clock (:data:`time.CLOCK_MONOTONIC`) for the timeout, rather
-  than using the system clock (:data:`time.CLOCK_REALTIME`), to not be affected
+  the monotonic clock (:const:`time.CLOCK_MONOTONIC`) for the timeout, rather
+  than using the system clock (:const:`time.CLOCK_REALTIME`), to not be affected
   by system clock changes.
   (Contributed by Victor Stinner in :issue:`41710`.)
 
@@ -1085,7 +1089,7 @@ time
   <https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/high-resolution-timers>`_
   which has a resolution of 100 nanoseconds (10\ :sup:`-7` seconds). Previously,
   it had a resolution of 1 millisecond (10\ :sup:`-3` seconds).
-  (Contributed by Benjamin Szőke, Dong-hee Na, Eryk Sun and Victor Stinner in :issue:`21302` and :issue:`45429`.)
+  (Contributed by Benjamin Szőke, Donghee Na, Eryk Sun and Victor Stinner in :issue:`21302` and :issue:`45429`.)
 
 
 .. _whatsnew311-tkinter:
@@ -1301,7 +1305,7 @@ This section covers specific optimizations independent of the
 
 * :func:`unicodedata.normalize`
   now normalizes pure-ASCII strings in constant time.
-  (Contributed by Dong-hee Na in :issue:`44987`.)
+  (Contributed by Donghee Na in :issue:`44987`.)
 
 
 .. _whatsnew311-faster-cpython:
@@ -1448,7 +1452,7 @@ Bucher, with additional help from Irit Katriel and Dennis Sweeney.)
 |               |                    |                                                       | (up to)           |                   |
 +===============+====================+=======================================================+===================+===================+
 | Binary        | ``x + x``          | Binary add, multiply and subtract for common types    | 10%               | Mark Shannon,     |
-| operations    |                    | such as :class:`int`, :class:`float` and :class:`str` |                   | Dong-hee Na,      |
+| operations    |                    | such as :class:`int`, :class:`float` and :class:`str` |                   | Donghee Na,       |
 |               | ``x - x``          | take custom fast paths for their underlying types.    |                   | Brandt Bucher,    |
 |               |                    |                                                       |                   | Dennis Sweeney    |
 |               | ``x * x``          |                                                       |                   |                   |
@@ -1731,13 +1735,13 @@ Modules
   slated for removal in Python 3.13:
 
   +---------------------+---------------------+---------------------+---------------------+---------------------+
-  | :mod:`aifc`         | :mod:`chunk`        | :mod:`msilib`       | :mod:`pipes`        | :mod:`telnetlib`    |
+  | :mod:`!aifc`        | :mod:`!chunk`       | :mod:`!msilib`      | :mod:`!pipes`       | :mod:`!telnetlib`   |
   +---------------------+---------------------+---------------------+---------------------+---------------------+
-  | :mod:`audioop`      | :mod:`crypt`        | :mod:`nis`          | :mod:`sndhdr`       | :mod:`uu`           |
+  | :mod:`!audioop`     | :mod:`!crypt`       | :mod:`!nis`         | :mod:`!sndhdr`      | :mod:`!uu`          |
   +---------------------+---------------------+---------------------+---------------------+---------------------+
-  | :mod:`cgi`          | :mod:`imghdr`       | :mod:`nntplib`      | :mod:`spwd`         | :mod:`xdrlib`       |
+  | :mod:`!cgi`         | :mod:`!imghdr`      | :mod:`!nntplib`     | :mod:`!spwd`        | :mod:`!xdrlib`      |
   +---------------------+---------------------+---------------------+---------------------+---------------------+
-  | :mod:`cgitb`        | :mod:`mailcap`      | :mod:`ossaudiodev`  | :mod:`sunau`        |                     |
+  | :mod:`!cgitb`       | :mod:`!mailcap`     | :mod:`!ossaudiodev` | :mod:`!sunau`       |                     |
   +---------------------+---------------------+---------------------+---------------------+---------------------+
 
   (Contributed by Brett Cannon in :issue:`47061` and Victor Stinner in
@@ -1748,7 +1752,7 @@ Modules
   warnings have now been updated to note they will be removed in Python 3.12.
   (Contributed by Hugo van Kemenade in :issue:`47022`.)
 
-* The :mod:`lib2to3` package and :ref:`2to3 <2to3-reference>` tool
+* The :mod:`!lib2to3` package and ``2to3`` tool
   are now deprecated and may not be able to parse Python 3.10 or newer.
   See :pep:`617`, introducing the new PEG parser, for details.
   (Contributed by Victor Stinner in :issue:`40360`.)
@@ -1794,7 +1798,7 @@ Standard Library
   * :func:`importlib.resources.path`
 
 * The :func:`locale.getdefaultlocale` function is deprecated and will be
-  removed in Python 3.13. Use :func:`locale.setlocale`,
+  removed in Python 3.15. Use :func:`locale.setlocale`,
   :func:`locale.getpreferredencoding(False) <locale.getpreferredencoding>` and
   :func:`locale.getlocale` functions instead.
   (Contributed by Victor Stinner in :gh:`90817`.)
@@ -1812,12 +1816,12 @@ Standard Library
   (Contributed by Serhiy Storchaka in :gh:`91760`.)
 
 * In the :mod:`re` module, the :func:`!re.template` function
-  and the corresponding :data:`!re.TEMPLATE` and :data:`!re.T` flags
+  and the corresponding :const:`!re.TEMPLATE` and :const:`!re.T` flags
   are deprecated, as they were undocumented and lacked an obvious purpose.
   They will be removed in Python 3.13.
   (Contributed by Serhiy Storchaka and Miro Hron�ok in :gh:`92728`.)
 
-* :func:`turtle.settiltangle` has been deprecated since Python 3.1;
+* :func:`!turtle.settiltangle` has been deprecated since Python 3.1;
   it now emits a deprecation warning and will be removed in Python 3.13. Use
   :func:`turtle.tiltangle` instead (it was earlier incorrectly marked
   as deprecated, and its docstring is now corrected).
@@ -1835,7 +1839,7 @@ Standard Library
 
 * :class:`!webbrowser.MacOSX` is deprecated and will be removed in Python 3.13.
   It is untested, undocumented, and not used by :mod:`webbrowser` itself.
-  (Contributed by Dong-hee Na in :issue:`42255`.)
+  (Contributed by Donghee Na in :issue:`42255`.)
 
 * The behavior of returning a value from a :class:`~unittest.TestCase` and
   :class:`~unittest.IsolatedAsyncioTestCase` test methods (other than the
@@ -1856,6 +1860,10 @@ Standard Library
 
   (Contributed by Erlend E. Aasland in :issue:`5846`.)
 
+* :meth:`~!unittest.TestProgram.usageExit` is marked deprecated, to be removed
+  in 3.13.
+  (Contributed by Carlos Damázio in :gh:`67048`.)
+
 
 .. _whatsnew311-pending-removal:
 .. _whatsnew311-python-api-pending-removal:
@@ -1976,7 +1984,7 @@ Removed C APIs are :ref:`listed separately <whatsnew311-c-api-removed>`.
   :meth:`!NullTranslations.set_output_charset` methods,
   and the *codeset* parameter of :func:`!translation` and :func:`!install`,
   since they are only used for the :func:`!l*gettext` functions.
-  (Contributed by Dong-hee Na and Serhiy Storchaka in :issue:`44235`.)
+  (Contributed by Donghee Na and Serhiy Storchaka in :issue:`44235`.)
 
 * Removed from the :mod:`inspect` module:
 
@@ -2001,7 +2009,7 @@ Removed C APIs are :ref:`listed separately <whatsnew311-c-api-removed>`.
 
 * Removed the :class:`!MailmanProxy` class in the :mod:`smtpd` module,
   as it is unusable without the external :mod:`!mailman` package.
-  (Contributed by Dong-hee Na in :issue:`35800`.)
+  (Contributed by Donghee Na in :issue:`35800`.)
 
 * Removed the deprecated :meth:`!split` method of :class:`!_tkinter.TkappType`.
   (Contributed by Erlend E. Aasland in :issue:`38371`.)
@@ -2143,7 +2151,7 @@ Build Changes
 * CPython can now be built with the
   `ThinLTO <https://clang.llvm.org/docs/ThinLTO.html>`_ option
   via passing ``thin`` to :option:`--with-lto`, i.e. ``--with-lto=thin``.
-  (Contributed by Dong-hee Na and Brett Holman in :issue:`44340`.)
+  (Contributed by Donghee Na and Brett Holman in :issue:`44340`.)
 
 * Freelists for object structs can now be disabled. A new :program:`configure`
   option :option:`--without-freelists` can be used to disable all freelists
@@ -2212,7 +2220,7 @@ New Features
   * :c:func:`PyBuffer_SizeFromFormat`
   * :c:func:`PyBuffer_ToContiguous`
   * :c:func:`PyBuffer_FromContiguous`
-  * :c:func:`PyBuffer_CopyData`
+  * :c:func:`PyObject_CopyData`
   * :c:func:`PyBuffer_IsContiguous`
   * :c:func:`PyBuffer_FillContiguousStrides`
   * :c:func:`PyBuffer_FillInfo`
@@ -2223,7 +2231,7 @@ New Features
 
   (Contributed by Christian Heimes in :issue:`45459`.)
 
-* Added the :c:data:`PyType_GetModuleByDef` function, used to get the module
+* Added the :c:func:`PyType_GetModuleByDef` function, used to get the module
   in which a method was defined, in cases where this information is not
   available directly (via :c:type:`PyCMethod`).
   (Contributed by Petr Viktorin in :issue:`46613`.)
@@ -2343,11 +2351,11 @@ Porting to Python 3.11
     #endif
 
 * The :c:func:`PyType_Ready` function now raises an error if a type is defined
-  with the :const:`Py_TPFLAGS_HAVE_GC` flag set but has no traverse function
+  with the :c:macro:`Py_TPFLAGS_HAVE_GC` flag set but has no traverse function
   (:c:member:`PyTypeObject.tp_traverse`).
   (Contributed by Victor Stinner in :issue:`44263`.)
 
-* Heap types with the :const:`Py_TPFLAGS_IMMUTABLETYPE` flag can now inherit
+* Heap types with the :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` flag can now inherit
   the :pep:`590` vectorcall protocol.  Previously, this was only possible for
   :ref:`static types <static-types>`.
   (Contributed by Erlend E. Aasland in :issue:`43908`)
@@ -2450,11 +2458,12 @@ Porting to Python 3.11
   * ``f_valuestack``: removed.
 
   The Python frame object is now created lazily. A side effect is that the
-  ``f_back`` member must not be accessed directly, since its value is now also
+  :attr:`~frame.f_back` member must not be accessed directly,
+  since its value is now also
   computed lazily. The :c:func:`PyFrame_GetBack` function must be called
   instead.
 
-  Debuggers that accessed the ``f_locals`` directly *must* call
+  Debuggers that accessed the :attr:`~frame.f_locals` directly *must* call
   :c:func:`PyFrame_GetLocals` instead. They no longer need to call
   :c:func:`PyFrame_FastToLocalsWithError` or :c:func:`PyFrame_LocalsToFast`,
   in fact they should not call those functions. The necessary updating of the
@@ -2558,18 +2567,18 @@ Deprecated
 
 * Deprecate the following functions to configure the Python initialization:
 
-  * :c:func:`PySys_AddWarnOptionUnicode`
-  * :c:func:`PySys_AddWarnOption`
-  * :c:func:`PySys_AddXOption`
-  * :c:func:`PySys_HasWarnOptions`
-  * :c:func:`PySys_SetArgvEx`
-  * :c:func:`PySys_SetArgv`
-  * :c:func:`PySys_SetPath`
-  * :c:func:`Py_SetPath`
-  * :c:func:`Py_SetProgramName`
-  * :c:func:`Py_SetPythonHome`
-  * :c:func:`Py_SetStandardStreamEncoding`
-  * :c:func:`_Py_SetProgramFullPath`
+  * :c:func:`!PySys_AddWarnOptionUnicode`
+  * :c:func:`!PySys_AddWarnOption`
+  * :c:func:`!PySys_AddXOption`
+  * :c:func:`!PySys_HasWarnOptions`
+  * :c:func:`!PySys_SetArgvEx`
+  * :c:func:`!PySys_SetArgv`
+  * :c:func:`!PySys_SetPath`
+  * :c:func:`!Py_SetPath`
+  * :c:func:`!Py_SetProgramName`
+  * :c:func:`!Py_SetPythonHome`
+  * :c:func:`!Py_SetStandardStreamEncoding`
+  * :c:func:`!_Py_SetProgramFullPath`
 
   Use the new :c:type:`PyConfig` API of the :ref:`Python Initialization Configuration
   <init-config>` instead (:pep:`587`).
@@ -2587,22 +2596,22 @@ Pending Removal in Python 3.12
 The following C APIs have been deprecated in earlier Python releases,
 and will be removed in Python 3.12.
 
-* :c:func:`PyUnicode_AS_DATA`
-* :c:func:`PyUnicode_AS_UNICODE`
-* :c:func:`PyUnicode_AsUnicodeAndSize`
-* :c:func:`PyUnicode_AsUnicode`
-* :c:func:`PyUnicode_FromUnicode`
-* :c:func:`PyUnicode_GET_DATA_SIZE`
-* :c:func:`PyUnicode_GET_SIZE`
-* :c:func:`PyUnicode_GetSize`
+* :c:func:`!PyUnicode_AS_DATA`
+* :c:func:`!PyUnicode_AS_UNICODE`
+* :c:func:`!PyUnicode_AsUnicodeAndSize`
+* :c:func:`!PyUnicode_AsUnicode`
+* :c:func:`!PyUnicode_FromUnicode`
+* :c:func:`!PyUnicode_GET_DATA_SIZE`
+* :c:func:`!PyUnicode_GET_SIZE`
+* :c:func:`!PyUnicode_GetSize`
 * :c:func:`PyUnicode_IS_COMPACT`
 * :c:func:`PyUnicode_IS_READY`
 * :c:func:`PyUnicode_READY`
-* :c:func:`Py_UNICODE_WSTR_LENGTH`
-* :c:func:`_PyUnicode_AsUnicode`
-* :c:macro:`PyUnicode_WCHAR_KIND`
+* :c:func:`!PyUnicode_WSTR_LENGTH`
+* :c:func:`!_PyUnicode_AsUnicode`
+* :c:macro:`!PyUnicode_WCHAR_KIND`
 * :c:type:`PyUnicodeObject`
-* :c:func:`PyUnicode_InternImmortal()`
+* :c:func:`!PyUnicode_InternImmortal`
 
 
 .. _whatsnew311-c-api-removed:
@@ -2610,7 +2619,7 @@ and will be removed in Python 3.12.
 Removed
 -------
 
-* :c:func:`PyFrame_BlockSetup` and :c:func:`PyFrame_BlockPop` have been
+* :c:func:`!PyFrame_BlockSetup` and :c:func:`!PyFrame_BlockPop` have been
   removed.
   (Contributed by Mark Shannon in :issue:`40222`.)
 
@@ -2646,7 +2655,7 @@ Removed
   * :c:func:`PyMarshal_WriteObjectToString`
   * the ``Py_MARSHAL_VERSION`` macro
 
-  These are not part of the :ref:`limited API <stable-abi-list>`.
+  These are not part of the :ref:`limited API <limited-api-list>`.
 
   (Contributed by Victor Stinner in :issue:`45474`.)
 
diff --git a/Doc/whatsnew/3.12.rst b/Doc/whatsnew/3.12.rst
index 3e55b3fa0f4734..8551b35438e2c3 100644
--- a/Doc/whatsnew/3.12.rst
+++ b/Doc/whatsnew/3.12.rst
@@ -3,8 +3,7 @@
   What's New In Python 3.12
 ****************************
 
-:Release: |release|
-:Date: |today|
+:Editor: Adam Turner
 
 .. Rules for maintenance:
 
@@ -47,15 +46,12 @@
    researching a change.
 
 This article explains the new features in Python 3.12, compared to 3.11.
-
+Python 3.12 was released on October 2, 2023.
 For full details, see the :ref:`changelog <changelog>`.
 
-.. note::
-
-   Prerelease users should be aware that this document is currently in draft
-   form. It will be updated substantially as Python 3.12 moves towards release,
-   so it's worth checking back even after reading earlier versions.
+.. seealso::
 
+   :pep:`693` -- Python 3.12 Release Schedule
 
 Summary -- Release highlights
 =============================
@@ -63,29 +59,375 @@ Summary -- Release highlights
 .. This section singles out the most important changes in Python 3.12.
    Brevity is key.
 
+Python 3.12 is the latest stable release of the Python programming language,
+with a mix of changes to the language and the standard library.
+The library changes focus on cleaning up deprecated APIs, usability, and correctness.
+Of note, the :mod:`!distutils` package has been removed from the standard library.
+Filesystem support in :mod:`os` and :mod:`pathlib` has seen a number of improvements,
+and several modules have better performance.
+
+The language changes focus on usability,
+as :term:`f-strings <f-string>` have had many limitations removed
+and 'Did you mean ...' suggestions continue to improve.
+The new :ref:`type parameter syntax <whatsnew312-pep695>`
+and :keyword:`type` statement improve ergonomics for using :term:`generic types
+<generic type>` and :term:`type aliases <type alias>` with static type checkers.
+
+This article doesn't attempt to provide a complete specification of all new features,
+but instead gives a convenient overview.
+For full details, you should refer to the documentation,
+such as the  :ref:`Library Reference <library-index>`
+and :ref:`Language Reference <reference-index>`.
+If you want to understand the complete implementation and design rationale for a change,
+refer to the PEP for a particular new feature;
+but note that PEPs usually are not kept up-to-date
+once a feature has been fully implemented.
+
+--------------
 
 .. PEP-sized items next.
 
-New typing features:
+New syntax features:
+
+* :ref:`PEP 695 <whatsnew312-pep695>`, type parameter syntax and the :keyword:`type` statement
+
+New grammar features:
+
+* :ref:`PEP 701 <whatsnew312-pep701>`, :term:`f-strings <f-string>` in the grammar
+
+Interpreter improvements:
+
+* :ref:`PEP 684 <whatsnew312-pep684>`, a unique per-interpreter :term:`GIL
+  <global interpreter lock>`
+* :ref:`PEP 669 <whatsnew312-pep669>`, low impact monitoring
+* `Improved 'Did you mean ...' suggestions <improved error messages_>`_
+  for :exc:`NameError`, :exc:`ImportError`, and :exc:`SyntaxError` exceptions
+
+Python data model improvements:
+
+* :ref:`PEP 688 <whatsnew312-pep688>`, using the :ref:`buffer protocol
+  <bufferobjects>` from Python
+
+Significant improvements in the standard library:
+
+* The :class:`pathlib.Path` class now supports subclassing
+* The :mod:`os` module received several improvements for Windows support
+* A :ref:`command-line interface <sqlite3-cli>` has been added to the
+  :mod:`sqlite3` module
+* :func:`isinstance` checks against :func:`runtime-checkable protocols
+  <typing.runtime_checkable>` enjoy a speed up of between two and 20 times
+* The :mod:`asyncio` package has had a number of performance improvements,
+  with some benchmarks showing a 75% speed up.
+* A :ref:`command-line interface <uuid-cli>` has been added to the
+  :mod:`uuid` module
+* Due to the changes in :ref:`PEP 701 <whatsnew312-pep701>`,
+  producing tokens via the :mod:`tokenize` module is up to 64% faster.
+
+Security improvements:
+
+* Replace the builtin :mod:`hashlib` implementations of
+  SHA1, SHA3, SHA2-384, SHA2-512, and MD5 with formally verified code from the
+  `HACL* <https://github.com/hacl-star/hacl-star/>`__ project.
+  These builtin implementations remain as fallbacks that are only used when
+  OpenSSL does not provide them.
+
+C API improvements:
+
+* :ref:`PEP 697 <whatsnew312-pep697>`, unstable C API tier
+* :ref:`PEP 683 <whatsnew312-pep683>`, immortal objects
 
-* :pep:`688`: Making the buffer protocol accessible in Python
+CPython implementation improvements:
 
-* :ref:`whatsnew312-pep692`
+* :ref:`PEP 709 <whatsnew312-pep709>`, comprehension inlining
+* :ref:`CPython support <perf_profiling>` for the Linux ``perf`` profiler
+* Implement stack overflow protection on supported platforms
 
-* :pep:`698`: Override Decorator for Static Typing
+New typing features:
+
+* :ref:`PEP 692 <whatsnew312-pep692>`, using :class:`~typing.TypedDict` to
+  annotate :term:`**kwargs <argument>`
+* :ref:`PEP 698 <whatsnew312-pep698>`, :func:`typing.override` decorator
 
 Important deprecations, removals or restrictions:
 
-* :pep:`623`: Remove wstr from Unicode
+* :pep:`623`: Remove ``wstr`` from Unicode objects in Python's C API,
+  reducing the size of every :class:`str` object by at least 8 bytes.
+
+* :pep:`632`: Remove the :mod:`!distutils` package.
+  See `the migration guide <https://peps.python.org/pep-0632/#migration-advice>`_
+  for advice replacing the APIs it provided.
+  The third-party `Setuptools <https://setuptools.pypa.io/en/latest/deprecated/distutils-legacy.html>`__
+  package continues to provide :mod:`!distutils`,
+  if you still require it in Python 3.12 and beyond.
+
+* :gh:`95299`: Do not pre-install ``setuptools`` in virtual environments
+  created with :mod:`venv`.
+  This means that ``distutils``, ``setuptools``, ``pkg_resources``,
+  and ``easy_install`` will no longer available by default; to access these
+  run ``pip install setuptools`` in the :ref:`activated <venv-explanation>`
+  virtual environment.
+
+* The :mod:`!asynchat`, :mod:`!asyncore`, and :mod:`!imp` modules have been
+  removed, along with several :class:`unittest.TestCase`
+  `method aliases <unittest-TestCase-removed-aliases_>`_.
+
+
+New Features
+============
+
+.. _whatsnew312-pep695:
+
+PEP 695: Type Parameter Syntax
+------------------------------
+
+Generic classes and functions under :pep:`484` were declared using a verbose syntax
+that left the scope of type parameters unclear and required explicit declarations of
+variance.
+
+:pep:`695` introduces a new, more compact and explicit way to create
+:ref:`generic classes <generic-classes>` and :ref:`functions <generic-functions>`::
+
+   def max[T](args: Iterable[T]) -> T:
+       ...
+
+   class list[T]:
+       def __getitem__(self, index: int, /) -> T:
+           ...
+
+       def append(self, element: T) -> None:
+           ...
+
+In addition, the PEP introduces a new way to declare :ref:`type aliases <type-aliases>`
+using the :keyword:`type` statement, which creates an instance of
+:class:`~typing.TypeAliasType`::
+
+   type Point = tuple[float, float]
+
+Type aliases can also be :ref:`generic <generic-type-aliases>`::
+
+   type Point[T] = tuple[T, T]
+
+The new syntax allows declaring :class:`~typing.TypeVarTuple`
+and :class:`~typing.ParamSpec` parameters, as well as :class:`~typing.TypeVar`
+parameters with bounds or constraints::
+
+   type IntFunc[**P] = Callable[P, int]  # ParamSpec
+   type LabeledTuple[*Ts] = tuple[str, *Ts]  # TypeVarTuple
+   type HashableSequence[T: Hashable] = Sequence[T]  # TypeVar with bound
+   type IntOrStrSequence[T: (int, str)] = Sequence[T]  # TypeVar with constraints
+
+The value of type aliases and the bound and constraints of type variables
+created through this syntax are evaluated only on demand (see
+:ref:`lazy evaluation <lazy-evaluation>`). This means type aliases are able to
+refer to other types defined later in the file.
+
+Type parameters declared through a type parameter list are visible within the
+scope of the declaration and any nested scopes, but not in the outer scope. For
+example, they can be used in the type annotations for the methods of a generic
+class or in the class body. However, they cannot be used in the module scope after
+the class is defined. See :ref:`type-params` for a detailed description of the
+runtime semantics of type parameters.
+
+In order to support these scoping semantics, a new kind of scope is introduced,
+the :ref:`annotation scope <annotation-scopes>`. Annotation scopes behave for the
+most part like function scopes, but interact differently with enclosing class scopes.
+In Python 3.13, :term:`annotations <annotation>` will also be evaluated in
+annotation scopes.
+
+See :pep:`695` for more details.
+
+(PEP written by Eric Traut. Implementation by Jelle Zijlstra, Eric Traut,
+and others in :gh:`103764`.)
+
+.. _whatsnew312-pep701:
+
+PEP 701: Syntactic formalization of f-strings
+---------------------------------------------
+
+:pep:`701` lifts some restrictions on the usage of :term:`f-strings <f-string>`.
+Expression components inside f-strings can now be any valid Python expression,
+including strings reusing the same quote as the containing f-string,
+multi-line expressions, comments, backslashes, and unicode escape sequences.
+Let's cover these in detail:
+
+* Quote reuse: in Python 3.11, reusing the same quotes as the enclosing f-string
+  raises a :exc:`SyntaxError`, forcing the user to either use other available
+  quotes (like using double quotes or triple quotes if the f-string uses single
+  quotes). In Python 3.12, you can now do things like this:
+
+    >>> songs = ['Take me back to Eden', 'Alkaline', 'Ascensionism']
+    >>> f"This is the playlist: {", ".join(songs)}"
+    'This is the playlist: Take me back to Eden, Alkaline, Ascensionism'
+
+  Note that before this change there was no explicit limit in how f-strings can
+  be nested, but the fact that string quotes cannot be reused inside the
+  expression component of f-strings made it impossible to nest f-strings
+  arbitrarily. In fact, this is the most nested f-string that could be written:
+
+    >>> f"""{f'''{f'{f"{1+1}"}'}'''}"""
+    '2'
+
+  As now f-strings can contain any valid Python expression inside expression
+  components, it is now possible to nest f-strings arbitrarily:
+
+    >>> f"{f"{f"{f"{f"{f"{1+1}"}"}"}"}"}"
+    '2'
+
+* Multi-line expressions and comments: In Python 3.11, f-string expressions
+  must be defined in a single line, even if the expression within the f-string
+  could normally span multiple lines
+  (like literal lists being defined over multiple lines),
+  making them harder to read. In Python 3.12 you can now define f-strings
+  spanning multiple lines, and add inline comments:
+
+    >>> f"This is the playlist: {", ".join([
+    ...     'Take me back to Eden',  # My, my, those eyes like fire
+    ...     'Alkaline',              # Not acid nor alkaline
+    ...     'Ascensionism'           # Take to the broken skies at last
+    ... ])}"
+    'This is the playlist: Take me back to Eden, Alkaline, Ascensionism'
+
+* Backslashes and unicode characters: before Python 3.12 f-string expressions
+  couldn't contain any ``\`` character. This also affected unicode :ref:`escape
+  sequences <escape-sequences>` (such as ``\N{snowman}``) as these contain
+  the ``\N`` part that previously could not be part of expression components of
+  f-strings. Now, you can define expressions like this:
+
+    >>> print(f"This is the playlist: {"\n".join(songs)}")
+    This is the playlist: Take me back to Eden
+    Alkaline
+    Ascensionism
+    >>> print(f"This is the playlist: {"\N{BLACK HEART SUIT}".join(songs)}")
+    This is the playlist: Take me back to Eden♥Alkaline♥Ascensionism
+
+See :pep:`701` for more details.
+
+As a positive side-effect of how this feature has been implemented (by parsing f-strings
+with :pep:`the PEG parser <617>`), now error messages for f-strings are more precise
+and include the exact location of the error. For example, in Python 3.11, the following
+f-string raises a :exc:`SyntaxError`:
+
+.. code-block:: python
+
+    >>> my_string = f"{x z y}" + f"{1 + 1}"
+      File "<stdin>", line 1
+        (x z y)
+         ^^^
+    SyntaxError: f-string: invalid syntax. Perhaps you forgot a comma?
+
+but the error message doesn't include the exact location of the error within the line and
+also has the expression artificially surrounded by parentheses. In Python 3.12, as f-strings
+are parsed with the PEG parser, error messages can be more precise and show the entire line:
+
+.. code-block:: python
+
+    >>> my_string = f"{x z y}" + f"{1 + 1}"
+      File "<stdin>", line 1
+        my_string = f"{x z y}" + f"{1 + 1}"
+                       ^^^
+    SyntaxError: invalid syntax. Perhaps you forgot a comma?
+
+(Contributed by Pablo Galindo, Batuhan Taskaya, Lysandros Nikolaou, Cristián
+Maureira-Fredes and Marta Gómez in :gh:`102856`. PEP written by Pablo Galindo,
+Batuhan Taskaya, Lysandros Nikolaou and Marta Gómez).
 
-* :pep:`632`: Remove the ``distutils`` package
+.. _whatsnew312-pep684:
+
+PEP 684: A Per-Interpreter GIL
+------------------------------
+
+:pep:`684` introduces a per-interpreter :term:`GIL <global interpreter lock>`,
+so that sub-interpreters may now be created with a unique GIL per interpreter.
+This allows Python programs to take full advantage of multiple CPU
+cores. This is currently only available through the C-API,
+though a Python API is :pep:`anticipated for 3.13 <554>`.
+
+Use the new :c:func:`Py_NewInterpreterFromConfig` function to
+create an interpreter with its own GIL::
+
+   PyInterpreterConfig config = {
+       .check_multi_interp_extensions = 1,
+       .gil = PyInterpreterConfig_OWN_GIL,
+   };
+   PyThreadState *tstate = NULL;
+   PyStatus status = Py_NewInterpreterFromConfig(&tstate, &config);
+   if (PyStatus_Exception(status)) {
+       return -1;
+   }
+   /* The new interpreter is now active in the current thread. */
+
+For further examples how to use the C-API for sub-interpreters with a
+per-interpreter GIL, see :source:`Modules/_xxsubinterpretersmodule.c`.
+
+(Contributed by Eric Snow in :gh:`104210`, etc.)
+
+.. _whatsnew312-pep669:
+
+PEP 669: Low impact monitoring for CPython
+------------------------------------------
+
+:pep:`669` defines a new :mod:`API <sys.monitoring>` for profilers,
+debuggers, and other tools to monitor events in CPython.
+It covers a wide range of events, including calls,
+returns, lines, exceptions, jumps, and more.
+This means that you only pay for what you use, providing support
+for near-zero overhead debuggers and coverage tools.
+See  :mod:`sys.monitoring` for details.
+
+(Contributed by Mark Shannon in :gh:`103082`.)
+
+.. _whatsnew312-pep688:
+
+PEP 688: Making the buffer protocol accessible in Python
+--------------------------------------------------------
+
+:pep:`688` introduces a way to use the :ref:`buffer protocol <bufferobjects>`
+from Python code. Classes that implement the :meth:`~object.__buffer__` method
+are now usable as buffer types.
+
+The new :class:`collections.abc.Buffer` ABC provides a standard
+way to represent buffer objects, for example in type annotations.
+The new :class:`inspect.BufferFlags` enum represents the flags that
+can be used to customize buffer creation.
+(Contributed by Jelle Zijlstra in :gh:`102500`.)
+
+.. _whatsnew312-pep709:
+
+PEP 709: Comprehension inlining
+-------------------------------
+
+Dictionary, list, and set comprehensions are now inlined, rather than creating a
+new single-use function object for each execution of the comprehension. This
+speeds up execution of a comprehension by up to two times.
+See :pep:`709` for further details.
+
+Comprehension iteration variables remain isolated and don't overwrite a
+variable of the same name in the outer scope, nor are they visible after the
+comprehension. Inlining does result in a few visible behavior changes:
+
+* There is no longer a separate frame for the comprehension in tracebacks,
+  and tracing/profiling no longer shows the comprehension as a function call.
+* The :mod:`symtable` module will no longer produce child symbol tables for each
+  comprehension; instead, the comprehension's locals will be included in the
+  parent function's symbol table.
+* Calling :func:`locals` inside a comprehension now includes variables
+  from outside the comprehension, and no longer includes the synthetic ``.0``
+  variable for the comprehension "argument".
+* A comprehension iterating directly over ``locals()`` (e.g. ``[k for k in
+  locals()]``) may see "RuntimeError: dictionary changed size during iteration"
+  when run under tracing (e.g. code coverage measurement). This is the same
+  behavior already seen in e.g. ``for k in locals():``. To avoid the error, first
+  create a list of keys to iterate over: ``keys = list(locals()); [k for k in
+  keys]``.
+
+(Contributed by Carl Meyer and Vladimir Matveev in :pep:`709`.)
 
 Improved Error Messages
-=======================
+-----------------------
 
 * Modules from the standard library are now potentially suggested as part of
   the error messages displayed by the interpreter when a :exc:`NameError` is
-  raised to the top level. Contributed by Pablo Galindo in :gh:`98254`.
+  raised to the top level. (Contributed by Pablo Galindo in :gh:`98254`.)
 
     >>> sys.version_info
     Traceback (most recent call last):
@@ -96,7 +438,7 @@ Improved Error Messages
   Now if a :exc:`NameError` is raised in a method and the instance has an
   attribute that's exactly equal to the name in the exception, the suggestion
   will include ``self.<NAME>`` instead of the closest match in the method
-  scope. Contributed by Pablo Galindo in :gh:`99139`.
+  scope. (Contributed by Pablo Galindo in :gh:`99139`.)
 
     >>> class A:
     ...    def __init__(self):
@@ -104,7 +446,7 @@ Improved Error Messages
     ...
     ...    def foo(self):
     ...        somethin = blech
-
+    ...
     >>> A().foo()
     Traceback (most recent call last):
       File "<stdin>", line 1
@@ -112,9 +454,8 @@ Improved Error Messages
                    ^^^^^
     NameError: name 'blech' is not defined. Did you mean: 'self.blech'?
 
-
 * Improve the :exc:`SyntaxError` error message when the user types ``import x
-  from y`` instead of ``from y import x``. Contributed by Pablo Galindo in :gh:`98931`.
+  from y`` instead of ``from y import x``. (Contributed by Pablo Galindo in :gh:`98931`.)
 
     >>> import a.y.z from b.y.z
     Traceback (most recent call last):
@@ -125,7 +466,7 @@ Improved Error Messages
 
 * :exc:`ImportError` exceptions raised from failed ``from <module> import
   <name>`` statements now include suggestions for the value of ``<name>`` based on the
-  available names in ``<module>``. Contributed by Pablo Galindo in :gh:`91058`.
+  available names in ``<module>``. (Contributed by Pablo Galindo in :gh:`91058`.)
 
     >>> from collections import chainmap
     Traceback (most recent call last):
@@ -133,67 +474,10 @@ Improved Error Messages
     ImportError: cannot import name 'chainmap' from 'collections'. Did you mean: 'ChainMap'?
 
 
-New Features
-============
-
-* Add :ref:`perf_profiling` through the new
-  environment variable :envvar:`PYTHONPERFSUPPORT`,
-  the new command-line option :option:`-X perf <-X>`,
-  as well as the new :func:`sys.activate_stack_trampoline`,
-  :func:`sys.deactivate_stack_trampoline`,
-  and :func:`sys.is_stack_trampoline_active` APIs.
-  (Design by Pablo Galindo. Contributed by Pablo Galindo and Christian Heimes
-  with contributions from Gregory P. Smith [Google] and Mark Shannon
-  in :gh:`96123`.)
-* The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`,
-  have a new a *filter* argument that allows limiting tar features than may be
-  surprising or dangerous, such as creating files outside the destination
-  directory.
-  See :ref:`tarfile-extraction-filter` for details.
-  In Python 3.14, the default will switch to ``'data'``.
-  (Contributed by Petr Viktorin in :pep:`706`.)
-
-.. _whatsnew312-pep709:
-
-PEP 709: Comprehension inlining
--------------------------------
-
-Dictionary, list, and set comprehensions are now inlined, rather than creating a
-new single-use function object for each execution of the comprehension. This
-speeds up execution of a comprehension by up to 2x.
-
-Comprehension iteration variables remain isolated; they don't overwrite a
-variable of the same name in the outer scope, nor are they visible after the
-comprehension. This isolation is now maintained via stack/locals manipulation,
-not via separate function scope.
-
-Inlining does result in a few visible behavior changes:
-
-* There is no longer a separate frame for the comprehension in tracebacks,
-  and tracing/profiling no longer shows the comprehension as a function call.
-* Calling :func:`locals` inside a comprehension now includes variables
-  from outside the comprehension, and no longer includes the synthetic ``.0``
-  variable for the comprehension "argument".
-
-Contributed by Carl Meyer and Vladimir Matveev in :pep:`709`.
-
-PEP 688: Making the buffer protocol accessible in Python
---------------------------------------------------------
-
-:pep:`688` introduces a way to use the :ref:`buffer protocol <bufferobjects>`
-from Python code. Classes that implement the :meth:`~object.__buffer__` method
-are now usable as buffer types.
-
-The new :class:`collections.abc.Buffer` ABC provides a standard
-way to represent buffer objects, for example in type annotations.
-The new :class:`inspect.BufferFlags` enum represents the flags that
-can be used to customize buffer creation.
-(Contributed by Jelle Zijlstra in :gh:`102500`.)
-
 New Features Related to Type Hints
 ==================================
 
-This section covers major changes affecting :pep:`484` type hints and
+This section covers major changes affecting :pep:`type hints <484>` and
 the :mod:`typing` module.
 
 .. _whatsnew312-pep692:
@@ -205,7 +489,7 @@ Typing ``**kwargs`` in a function signature as introduced by :pep:`484` allowed
 for valid annotations only in cases where all of the ``**kwargs`` were of the
 same type.
 
-This PEP specifies a more precise way of typing ``**kwargs`` by relying on
+:pep:`692` specifies a more precise way of typing ``**kwargs`` by relying on
 typed dictionaries::
 
    from typing import TypedDict, Unpack
@@ -218,37 +502,52 @@ typed dictionaries::
 
 See :pep:`692` for more details.
 
-(PEP written by Franek Magiera)
+(Contributed by Franek Magiera in :gh:`103629`.)
 
-Other Language Changes
-======================
+.. _whatsnew312-pep698:
 
-* :class:`types.MappingProxyType` instances are now hashable if the underlying
-  mapping is hashable.
-  (Contributed by Serhiy Storchaka in :gh:`87995`.)
+PEP 698: Override Decorator for Static Typing
+---------------------------------------------
 
-* :class:`memoryview` now supports the half-float type (the "e" format code).
-  (Contributed by Dong-hee Na and Antoine Pitrou in :gh:`90751`.)
+A new decorator :func:`typing.override` has been added to the :mod:`typing`
+module. It indicates to type checkers that the method is intended to override
+a method in a superclass. This allows type checkers to catch mistakes where
+a method that is intended to override something in a base class
+does not in fact do so.
 
-* The parser now raises :exc:`SyntaxError` when parsing source code containing
-  null bytes. (Contributed by Pablo Galindo in :gh:`96670`.)
+Example::
 
-* :func:`ast.parse` now raises :exc:`SyntaxError` instead of :exc:`ValueError`
-  when parsing source code containing null bytes. (Contributed by Pablo Galindo
-  in :gh:`96670`.)
+   from typing import override
 
-* The Garbage Collector now runs only on the eval breaker mechanism of the
-  Python bytecode evaluation loop instead of object allocations. The GC can
-  also run when :c:func:`PyErr_CheckSignals` is called so C extensions that
-  need to run for a long time without executing any Python code also have a
-  chance to execute the GC periodically. (Contributed by Pablo Galindo in
-  :gh:`97922`.)
+   class Base:
+     def get_color(self) -> str:
+       return "blue"
+
+   class GoodChild(Base):
+     @override  # ok: overrides Base.get_color
+     def get_color(self) -> str:
+       return "yellow"
+
+   class BadChild(Base):
+     @override  # type checker error: does not override Base.get_color
+     def get_colour(self) -> str:
+       return "red"
+
+See :pep:`698` for more details.
+
+(Contributed by Steven Troxler in :gh:`101561`.)
+
+Other Language Changes
+======================
+
+* The parser now raises :exc:`SyntaxError` when parsing source code containing
+  null bytes. (Contributed by Pablo Galindo in :gh:`96670`.)
 
 * A backslash-character pair that is not a valid escape sequence now generates
   a :exc:`SyntaxWarning`, instead of :exc:`DeprecationWarning`.
   For example, ``re.compile("\d+\.\d+")`` now emits a :exc:`SyntaxWarning`
-  (``"\d"`` is an invalid escape sequence), use raw strings for regular
-  expression: ``re.compile(r"\d+\.\d+")``.
+  (``"\d"`` is an invalid escape sequence, use raw strings for regular
+  expression: ``re.compile(r"\d+\.\d+")``).
   In a future Python version, :exc:`SyntaxError` will eventually be raised,
   instead of :exc:`SyntaxWarning`.
   (Contributed by Victor Stinner in :gh:`98401`.)
@@ -259,10 +558,6 @@ Other Language Changes
   In a future Python version they will be eventually a :exc:`SyntaxError`.
   (Contributed by Victor Stinner in :gh:`98401`.)
 
-* All builtin and extension callables expecting boolean parameters now accept
-  arguments of any type instead of just :class:`bool` and :class:`int`.
-  (Contributed by Serhiy Storchaka in :gh:`60203`.)
-
 * Variables used in the target part of comprehensions that are not stored to
   can now be used in assignment expressions (``:=``).
   For example, in ``[(b := 1) for a, b.prop in some_iter]``, the assignment to
@@ -270,10 +565,7 @@ Other Language Changes
   part of comprehensions (like ``a``) is still disallowed, as per :pep:`572`.
   (Contributed by Nikita Sobolev in :gh:`100581`.)
 
-* :class:`slice` objects are now hashable, allowing them to be used as dict keys and
-  set items. (Contributed by Will Bradshaw and Furkan Onder in :gh:`101264`.)
-
-* Exceptions raised in a typeobject's ``__set_name__`` method are no longer
+* Exceptions raised in a class or type's ``__set_name__`` method are no longer
   wrapped by a :exc:`RuntimeError`. Context information is added to the
   exception as a :pep:`678` note. (Contributed by Irit Katriel in :gh:`77757`.)
 
@@ -282,11 +574,58 @@ Other Language Changes
   :exc:`ExceptionGroup`. Also changed in version 3.11.4. (Contributed by Irit
   Katriel in :gh:`103590`.)
 
+* The Garbage Collector now runs only on the eval breaker mechanism of the
+  Python bytecode evaluation loop instead of object allocations. The GC can
+  also run when :c:func:`PyErr_CheckSignals` is called so C extensions that
+  need to run for a long time without executing any Python code also have a
+  chance to execute the GC periodically. (Contributed by Pablo Galindo in
+  :gh:`97922`.)
+
+* All builtin and extension callables expecting boolean parameters now accept
+  arguments of any type instead of just :class:`bool` and :class:`int`.
+  (Contributed by Serhiy Storchaka in :gh:`60203`.)
+
+* :class:`memoryview` now supports the half-float type (the "e" format code).
+  (Contributed by Donghee Na and Antoine Pitrou in :gh:`90751`.)
+
+* :class:`slice` objects are now hashable, allowing them to be used as dict keys and
+  set items. (Contributed by Will Bradshaw, Furkan Onder, and Raymond Hettinger in :gh:`101264`.)
+
+* :func:`sum` now uses Neumaier summation to improve accuracy and commutativity
+  when summing floats or mixed ints and floats.
+  (Contributed by Raymond Hettinger in :gh:`100425`.)
+
+* :func:`ast.parse` now raises :exc:`SyntaxError` instead of :exc:`ValueError`
+  when parsing source code containing null bytes. (Contributed by Pablo Galindo
+  in :gh:`96670`.)
+
+* The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`,
+  have a new a *filter* argument that allows limiting tar features than may be
+  surprising or dangerous, such as creating files outside the destination
+  directory.
+  See :ref:`tarfile extraction filters <tarfile-extraction-filter>` for details.
+  In Python 3.14, the default will switch to ``'data'``.
+  (Contributed by Petr Viktorin in :pep:`706`.)
+
+* :class:`types.MappingProxyType` instances are now hashable if the underlying
+  mapping is hashable.
+  (Contributed by Serhiy Storchaka in :gh:`87995`.)
+
+* Add :ref:`support for the perf profiler <perf_profiling>` through the new
+  environment variable :envvar:`PYTHONPERFSUPPORT`
+  and command-line option :option:`-X perf <-X>`,
+  as well as the new :func:`sys.activate_stack_trampoline`,
+  :func:`sys.deactivate_stack_trampoline`,
+  and :func:`sys.is_stack_trampoline_active` functions.
+  (Design by Pablo Galindo. Contributed by Pablo Galindo and Christian Heimes
+  with contributions from Gregory P. Smith [Google] and Mark Shannon
+  in :gh:`96123`.)
+
 
 New Modules
 ===========
 
-* None yet.
+* None.
 
 
 Improved Modules
@@ -306,29 +645,20 @@ asyncio
   writing to sockets and uses :meth:`~socket.socket.sendmsg` if the platform
   supports it. (Contributed by Kumar Aditya in :gh:`91166`.)
 
-* Added :func:`asyncio.eager_task_factory` and :func:`asyncio.create_eager_task_factory`
+* Add :func:`asyncio.eager_task_factory` and :func:`asyncio.create_eager_task_factory`
   functions to allow opting an event loop in to eager task execution,
   making some use-cases 2x to 5x faster.
-  (Contributed by Jacob Bower & Itamar O in :gh:`102853`, :gh:`104140`, and :gh:`104138`)
+  (Contributed by Jacob Bower & Itamar Oren in :gh:`102853`, :gh:`104140`, and :gh:`104138`)
 
-* On Linux, :mod:`asyncio` uses :class:`~asyncio.PidfdChildWatcher` by default
+* On Linux, :mod:`asyncio` uses :class:`asyncio.PidfdChildWatcher` by default
   if :func:`os.pidfd_open` is available and functional instead of
-  :class:`~asyncio.ThreadedChildWatcher`.
+  :class:`asyncio.ThreadedChildWatcher`.
   (Contributed by Kumar Aditya in :gh:`98024`.)
 
-* The child watcher classes :class:`~asyncio.MultiLoopChildWatcher`,
-  :class:`~asyncio.FastChildWatcher`, :class:`~asyncio.AbstractChildWatcher`
-  and :class:`~asyncio.SafeChildWatcher` are deprecated and
-  will be removed in Python 3.14. It is recommended to not manually
-  configure a child watcher as the event loop now uses the best available
-  child watcher for each platform (:class:`~asyncio.PidfdChildWatcher`
-  if supported and :class:`~asyncio.ThreadedChildWatcher` otherwise).
-  (Contributed by Kumar Aditya in :gh:`94597`.)
-
-* :func:`asyncio.set_child_watcher`, :func:`asyncio.get_child_watcher`,
-  :meth:`asyncio.AbstractEventLoopPolicy.set_child_watcher` and
-  :meth:`asyncio.AbstractEventLoopPolicy.get_child_watcher` are deprecated
-  and will be removed in Python 3.14.
+* The event loop now uses the best available child watcher for each platform
+  (:class:`asyncio.PidfdChildWatcher` if supported and
+  :class:`asyncio.ThreadedChildWatcher` otherwise), so manually
+  configuring a child watcher is not recommended.
   (Contributed by Kumar Aditya in :gh:`94597`.)
 
 * Add *loop_factory* parameter to :func:`asyncio.run` to allow specifying
@@ -336,7 +666,7 @@ asyncio
   (Contributed by Kumar Aditya in :gh:`99388`.)
 
 * Add C implementation of :func:`asyncio.current_task` for 4x-6x speedup.
-  (Contributed by Itamar Ostricher and Pranav Thulasiram Bhat in :gh:`100344`.)
+  (Contributed by Itamar Oren and Pranav Thulasiram Bhat in :gh:`100344`.)
 
 * :func:`asyncio.iscoroutine` now returns ``False`` for generators as
   :mod:`asyncio` does not support legacy generator-based coroutines.
@@ -349,15 +679,45 @@ asyncio
 calendar
 --------
 
-* Add enums :data:`~calendar.Month` and :data:`~calendar.Day`.
+* Add enums :data:`calendar.Month` and :data:`calendar.Day`
+  defining months of the year and days of the week.
   (Contributed by Prince Roshan in :gh:`103636`.)
 
 csv
 ---
 
-* Add :data:`~csv.QUOTE_NOTNULL` and :data:`~csv.QUOTE_STRINGS` flags to
+* Add :const:`csv.QUOTE_NOTNULL` and :const:`csv.QUOTE_STRINGS` flags to
   provide finer grained control of ``None`` and empty strings by
-  :class:`~csv.writer` objects.
+  :class:`csv.writer` objects.
+
+dis
+---
+
+* Pseudo instruction opcodes (which are used by the compiler but
+  do not appear in executable bytecode) are now exposed in the
+  :mod:`dis` module.
+  :opcode:`HAVE_ARGUMENT` is still relevant to real opcodes,
+  but it is not useful for pseudo instructions. Use the new
+  :data:`dis.hasarg` collection instead.
+  (Contributed by Irit Katriel in :gh:`94216`.)
+
+* Add the :data:`dis.hasexc` collection to signify instructions that set
+  an exception handler. (Contributed by Irit Katriel in :gh:`94216`.)
+
+fractions
+---------
+
+* Objects of type :class:`fractions.Fraction` now support float-style
+  formatting. (Contributed by Mark Dickinson in :gh:`100161`.)
+
+importlib.resources
+-------------------
+
+* :func:`importlib.resources.as_file` now supports resource directories.
+  (Contributed by Jason R. Coombs in :gh:`97930`.)
+
+* Rename first parameter of :func:`importlib.resources.files` to *anchor*.
+  (Contributed by Jason R. Coombs in :gh:`100598`.)
 
 inspect
 -------
@@ -368,68 +728,34 @@ inspect
 
 * Add :func:`inspect.getasyncgenstate` and :func:`inspect.getasyncgenlocals`
   for determining the current state of asynchronous generators.
-  (Contributed by Thomas Krennwallner in :issue:`35759`.)
+  (Contributed by Thomas Krennwallner in :gh:`79940`.)
 
 * The performance of :func:`inspect.getattr_static` has been considerably
   improved. Most calls to the function should be at least 2x faster than they
   were in Python 3.11, and some may be 6x faster or more. (Contributed by Alex
   Waygood in :gh:`103193`.)
 
-pathlib
--------
+itertools
+---------
 
-* Add support for subclassing :class:`pathlib.PurePath` and
-  :class:`~pathlib.Path`, plus their Posix- and Windows-specific variants.
-  Subclasses may override the :meth:`~pathlib.PurePath.with_segments` method
-  to pass information between path instances.
-
-* Add :meth:`~pathlib.Path.walk` for walking the directory trees and generating
-  all file or directory names within them, similar to :func:`os.walk`.
-  (Contributed by Stanislav Zmiev in :gh:`90385`.)
-
-* Add *walk_up* optional parameter to :meth:`pathlib.PurePath.relative_to`
-  to allow the insertion of ``..`` entries in the result; this behavior is
-  more consistent with :func:`os.path.relpath`.
-  (Contributed by Domenico Ragusa in :issue:`40358`.)
-
-* Add :meth:`pathlib.Path.is_junction` as a proxy to :func:`os.path.isjunction`.
-  (Contributed by Charles Machalow in :gh:`99547`.)
-
-
-dis
----
-
-* Pseudo instruction opcodes (which are used by the compiler but
-  do not appear in executable bytecode) are now exposed in the
-  :mod:`dis` module.
-  :opcode:`HAVE_ARGUMENT` is still relevant to real opcodes,
-  but it is not useful for pseudo instructions. Use the new
-  :data:`~dis.hasarg` collection instead.
-  (Contributed by Irit Katriel in :gh:`94216`.)
-
-fractions
----------
-
-* Objects of type :class:`fractions.Fraction` now support float-style
-  formatting. (Contributed by Mark Dickinson in :gh:`100161`.)
-
-itertools
----------
-
-* Added :class:`itertools.batched()` for collecting into even-sized
-  tuples where the last batch may be shorter than the rest.
-  (Contributed by Raymond Hettinger in :gh:`98363`.)
+* Add :class:`itertools.batched()` for collecting into even-sized
+  tuples where the last batch may be shorter than the rest.
+  (Contributed by Raymond Hettinger in :gh:`98363`.)
 
 math
 ----
 
-* Added :func:`math.sumprod` for computing a sum of products.
+* Add :func:`math.sumprod` for computing a sum of products.
   (Contributed by Raymond Hettinger in :gh:`100485`.)
 
+* Extend :func:`math.nextafter` to include a *steps* argument
+  for moving up or down multiple steps at a time.
+  (By Matthias Goergens, Mark Dickinson, and Raymond Hettinger in :gh:`94906`.)
+
 os
 --
 
-* Add :data:`os.PIDFD_NONBLOCK` to open a file descriptor
+* Add :const:`os.PIDFD_NONBLOCK` to open a file descriptor
   for a process with :func:`os.pidfd_open` in non-blocking mode.
   (Contributed by Kumar Aditya in :gh:`93312`.)
 
@@ -460,6 +786,30 @@ os.path
 * Add :func:`os.path.splitroot` to split a path into a triad
   ``(drive, root, tail)``. (Contributed by Barney Gale in :gh:`101000`.)
 
+pathlib
+-------
+
+* Add support for subclassing :class:`pathlib.PurePath` and
+  :class:`pathlib.Path`, plus their Posix- and Windows-specific variants.
+  Subclasses may override the :meth:`pathlib.PurePath.with_segments` method
+  to pass information between path instances.
+
+* Add :meth:`pathlib.Path.walk` for walking the directory trees and generating
+  all file or directory names within them, similar to :func:`os.walk`.
+  (Contributed by Stanislav Zmiev in :gh:`90385`.)
+
+* Add *walk_up* optional parameter to :meth:`pathlib.PurePath.relative_to`
+  to allow the insertion of ``..`` entries in the result; this behavior is
+  more consistent with :func:`os.path.relpath`.
+  (Contributed by Domenico Ragusa in :gh:`84538`.)
+
+* Add :meth:`pathlib.Path.is_junction` as a proxy to :func:`os.path.isjunction`.
+  (Contributed by Charles Machalow in :gh:`99547`.)
+
+* Add *case_sensitive* optional parameter to :meth:`pathlib.Path.glob`,
+  :meth:`pathlib.Path.rglob` and :meth:`pathlib.PurePath.match` for matching
+  the path's case sensitivity, allowing for more precise control over the matching process.
+
 pdb
 ---
 
@@ -468,6 +818,15 @@ pdb
   value.
   (Contributed by Tian Gao in :gh:`103693`.)
 
+random
+------
+
+* Add :func:`random.binomialvariate`.
+  (Contributed by Raymond Hettinger in :gh:`81620`.)
+
+* Add a default of ``lambd=1.0`` to :func:`random.expovariate`.
+  (Contributed by Raymond Hettinger in :gh:`100234`.)
+
 shutil
 ------
 
@@ -479,8 +838,7 @@ shutil
 
 * :func:`shutil.rmtree` now accepts a new argument *onexc* which is an
   error handler like *onerror* but which expects an exception instance
-  rather than a *(typ, val, tb)* triplet. *onerror* is deprecated and
-  will be removed in Python 3.14.
+  rather than a *(typ, val, tb)* triplet. *onerror* is deprecated.
   (Contributed by Irit Katriel in :gh:`102828`.)
 
 * :func:`shutil.which` now consults the *PATHEXT* environment variable to
@@ -504,70 +862,60 @@ sqlite3
 * Add a :ref:`command-line interface <sqlite3-cli>`.
   (Contributed by Erlend E. Aasland in :gh:`77617`.)
 
-* Add the :attr:`~sqlite3.Connection.autocommit` attribute
-  to :class:`~sqlite3.Connection`
-  and the *autocommit* parameter to :func:`~sqlite3.connect`
+* Add the :attr:`sqlite3.Connection.autocommit` attribute
+  to :class:`sqlite3.Connection`
+  and the *autocommit* parameter to :func:`sqlite3.connect`
   to control :pep:`249`-compliant
   :ref:`transaction handling <sqlite3-transaction-control-autocommit>`.
   (Contributed by Erlend E. Aasland in :gh:`83638`.)
 
 * Add *entrypoint* keyword-only parameter to
-  :meth:`~sqlite3.Connection.load_extension`,
+  :meth:`sqlite3.Connection.load_extension`,
   for overriding the SQLite extension entry point.
   (Contributed by Erlend E. Aasland in :gh:`103015`.)
 
-* Add :meth:`~sqlite3.Connection.getconfig` and
-  :meth:`~sqlite3.Connection.setconfig` to :class:`~sqlite3.Connection`
+* Add :meth:`sqlite3.Connection.getconfig` and
+  :meth:`sqlite3.Connection.setconfig` to :class:`sqlite3.Connection`
   to make configuration changes to a database connection.
   (Contributed by Erlend E. Aasland in :gh:`103489`.)
 
-threading
----------
-
-* Add :func:`threading.settrace_all_threads` and
-  :func:`threading.setprofile_all_threads` that allow to set tracing and
-  profiling functions in all running threads in addition to the calling one.
-  (Contributed by Pablo Galindo in :gh:`93503`.)
-
-types
------
-
-* Add :func:`types.get_original_bases` to allow for further introspection of
-  :ref:`user-defined-generics` when subclassed. (Contributed by
-  James Hilton-Balfe and Alex Waygood in :gh:`101827`.)
-
-unicodedata
------------
-
-* The Unicode database has been updated to version 15.0.0. (Contributed by
-  Benjamin Peterson in :gh:`96734`).
-
-unittest
---------
+statistics
+----------
 
-Added ``--durations`` command line option, showing the N slowest test cases::
+* Extend :func:`statistics.correlation` to include as a ``ranked`` method
+  for computing the Spearman correlation of ranked data.
+  (Contributed by Raymond Hettinger in :gh:`95861`.)
 
-  python3 -m unittest --durations=3 lib.tests.test_threading
-  .....
-  Slowest test durations
-  ----------------------------------------------------------------------
-  1.210s     test_timeout (Lib.test.test_threading.BarrierTests)
-  1.003s     test_default_timeout (Lib.test.test_threading.BarrierTests)
-  0.518s     test_timeout (Lib.test.test_threading.EventTests)
+sys
+---
 
-  (0.000 durations hidden.  Use -v to show these durations.)
-  ----------------------------------------------------------------------
-  Ran 158 tests in 9.869s
+* Add the :mod:`sys.monitoring` namespace to expose the new :ref:`PEP 669
+  <whatsnew312-pep669>` monitoring API.
+  (Contributed by Mark Shannon in :gh:`103082`.)
 
-  OK (skipped=3)
+* Add :func:`sys.activate_stack_trampoline` and
+  :func:`sys.deactivate_stack_trampoline` for activating and deactivating
+  stack profiler trampolines,
+  and :func:`sys.is_stack_trampoline_active` for querying if stack profiler
+  trampolines are active.
+  (Contributed by Pablo Galindo and Christian Heimes
+  with contributions from Gregory P. Smith [Google] and Mark Shannon
+  in :gh:`96123`.)
 
-(Contributed by Giampaolo Rodola in :issue:`4080`)
+* Add :data:`sys.last_exc` which holds the last unhandled exception that
+  was raised (for post-mortem debugging use cases). Deprecate the
+  three fields that have the same information in its legacy form:
+  :data:`sys.last_type`, :data:`sys.last_value` and :data:`sys.last_traceback`.
+  (Contributed by Irit Katriel in :gh:`102778`.)
 
-uuid
-----
+* :func:`sys._current_exceptions` now returns a mapping from thread-id to an
+  exception instance, rather than to a ``(typ, exc, tb)`` tuple.
+  (Contributed by Irit Katriel in :gh:`103176`.)
 
-* Add a :ref:`command-line interface <uuid-cli>`.
-  (Contributed by Adam Chhina in :gh:`88597`.)
+* :func:`sys.setrecursionlimit` and :func:`sys.getrecursionlimit`.
+  The recursion limit now applies only to Python code. Builtin functions do
+  not use the recursion limit, but are protected by a different mechanism
+  that prevents recursion from causing a virtual machine crash.
 
 tempfile
 --------
@@ -579,14 +927,43 @@ tempfile
 
 .. _whatsnew-typing-py312:
 
+threading
+---------
+
+* Add :func:`threading.settrace_all_threads` and
+  :func:`threading.setprofile_all_threads` that allow to set tracing and
+  profiling functions in all running threads in addition to the calling one.
+  (Contributed by Pablo Galindo in :gh:`93503`.)
+
+tkinter
+-------
+
+* ``tkinter.Canvas.coords()`` now flattens its arguments.
+  It now accepts not only coordinates as separate arguments
+  (``x1, y1, x2, y2, ...``) and a sequence of coordinates
+  (``[x1, y1, x2, y2, ...]``), but also coordinates grouped in pairs
+  (``(x1, y1), (x2, y2), ...`` and ``[(x1, y1), (x2, y2), ...]``),
+  like ``create_*()`` methods.
+  (Contributed by Serhiy Storchaka in :gh:`94473`.)
+
+tokenize
+--------
+
+* The :mod:`tokenize` module includes the changes introduced in :pep:`701`.
+  (Contributed by Marta Gómez Macías and Pablo Galindo in :gh:`102856`.)
+  See :ref:`whatsnew312-porting-to-python312` for more information on the
+  changes to the :mod:`tokenize` module.
+
+types
+-----
+
+* Add :func:`types.get_original_bases` to allow for further introspection of
+  :ref:`user-defined-generics` when subclassed. (Contributed by
+  James Hilton-Balfe and Alex Waygood in :gh:`101827`.)
+
 typing
 ------
 
-* Add :func:`typing.override`, an override decorator telling to static type
-  checkers to verify that a method overrides some method or attribute of the
-  same name on a base class, as per :pep:`698`. (Contributed by Steven Troxler in
-  :gh:`101564`.)
-
 * :func:`isinstance` checks against
   :func:`runtime-checkable protocols <typing.runtime_checkable>` now use
   :func:`inspect.getattr_static` rather than :func:`hasattr` to lookup whether
@@ -631,39 +1008,57 @@ typing
   or more members may be slower than in Python 3.11. (Contributed by Alex
   Waygood in :gh:`74690` and :gh:`103193`.)
 
-sys
----
+* All :data:`typing.TypedDict` and :data:`typing.NamedTuple` classes now have the
+  ``__orig_bases__`` attribute. (Contributed by Adrian Garcia Badaracco in
+  :gh:`103699`.)
 
-* Add :func:`sys.activate_stack_trampoline` and
-  :func:`sys.deactivate_stack_trampoline` for activating and deactivating
-  stack profiler trampolines,
-  and :func:`sys.is_stack_trampoline_active` for querying if stack profiler
-  trampolines are active.
-  (Contributed by Pablo Galindo and Christian Heimes
-  with contributions from Gregory P. Smith [Google] and Mark Shannon
-  in :gh:`96123`.)
+* Add ``frozen_default`` parameter to :func:`typing.dataclass_transform`.
+  (Contributed by Erik De Bonte in :gh:`99957`.)
 
-* Add :data:`sys.last_exc` which holds the last unhandled exception that
-  was raised (for post-mortem debugging use cases). Deprecate the
-  three fields that have the same information in its legacy form:
-  :data:`sys.last_type`, :data:`sys.last_value` and :data:`sys.last_traceback`.
-  (Contributed by Irit Katriel in :gh:`102778`.)
+unicodedata
+-----------
 
-* :func:`sys._current_exceptions` now returns a mapping from thread-id to an
-  exception instance, rather than to a ``(typ, exc, tb)`` tuple.
-  (Contributed by Irit Katriel in :gh:`103176`.)
+* The Unicode database has been updated to version 15.0.0. (Contributed by
+  Benjamin Peterson in :gh:`96734`).
+
+unittest
+--------
+
+Add a ``--durations`` command line option, showing the N slowest test cases::
+
+  python3 -m unittest --durations=3 lib.tests.test_threading
+  .....
+  Slowest test durations
+  ----------------------------------------------------------------------
+  1.210s     test_timeout (Lib.test.test_threading.BarrierTests)
+  1.003s     test_default_timeout (Lib.test.test_threading.BarrierTests)
+  0.518s     test_timeout (Lib.test.test_threading.EventTests)
+
+  (0.000 durations hidden.  Use -v to show these durations.)
+  ----------------------------------------------------------------------
+  Ran 158 tests in 9.869s
+
+  OK (skipped=3)
+
+(Contributed by Giampaolo Rodola in :gh:`48330`)
+
+uuid
+----
+
+* Add a :ref:`command-line interface <uuid-cli>`.
+  (Contributed by Adam Chhina in :gh:`88597`.)
 
 
 Optimizations
 =============
 
-* Removed ``wstr`` and ``wstr_length`` members from Unicode objects.
+* Remove ``wstr`` and ``wstr_length`` members from Unicode objects.
   It reduces object size by 8 or 16 bytes on 64bit platform. (:pep:`623`)
   (Contributed by Inada Naoki in :gh:`92536`.)
 
-* Added experimental support for using the BOLT binary optimizer in the build
+* Add experimental support for using the BOLT binary optimizer in the build
   process, which improves performance by 1-5%.
-  (Contributed by Kevin Modzelewski in :gh:`90536` and tuned by Dong-hee Na in :gh:`101525`)
+  (Contributed by Kevin Modzelewski in :gh:`90536` and tuned by Donghee Na in :gh:`101525`)
 
 * Speed up the regular expression substitution (functions :func:`re.sub` and
   :func:`re.subn` and corresponding :class:`!re.Pattern` methods) for
@@ -671,20 +1066,63 @@ Optimizations
   (Contributed by Serhiy Storchaka in :gh:`91524`.)
 
 * Speed up :class:`asyncio.Task` creation by deferring expensive string formatting.
-  (Contributed by Itamar O in :gh:`103793`.)
+  (Contributed by Itamar Oren in :gh:`103793`.)
+
+* The :func:`tokenize.tokenize` and :func:`tokenize.generate_tokens` functions are
+  up to 64% faster as a side effect of the changes required to cover :pep:`701` in
+  the :mod:`tokenize` module. (Contributed by Marta Gómez Macías and Pablo Galindo
+  in :gh:`102856`.)
+
+* Speed up :func:`super` method calls and attribute loads via the
+  new :opcode:`LOAD_SUPER_ATTR` instruction. (Contributed by Carl Meyer and
+  Vladimir Matveev in :gh:`103497`.)
 
 
 CPython bytecode changes
 ========================
 
-* Removed the :opcode:`LOAD_METHOD` instruction. It has been merged into
+* Remove the :opcode:`!LOAD_METHOD` instruction. It has been merged into
   :opcode:`LOAD_ATTR`. :opcode:`LOAD_ATTR` will now behave like the old
-  :opcode:`LOAD_METHOD` instruction if the low bit of its oparg is set.
+  :opcode:`!LOAD_METHOD` instruction if the low bit of its oparg is set.
   (Contributed by Ken Jin in :gh:`93429`.)
 
-* Removed the :opcode:`!JUMP_IF_FALSE_OR_POP` and :opcode:`!JUMP_IF_TRUE_OR_POP`
+* Remove the :opcode:`!JUMP_IF_FALSE_OR_POP` and :opcode:`!JUMP_IF_TRUE_OR_POP`
   instructions. (Contributed by Irit Katriel in :gh:`102859`.)
 
+* Remove the :opcode:`!PRECALL` instruction. (Contributed by Mark Shannon in
+  :gh:`92925`.)
+
+* Add the :opcode:`BINARY_SLICE` and :opcode:`STORE_SLICE` instructions.
+  (Contributed by Mark Shannon in :gh:`94163`.)
+
+* Add the :opcode:`CALL_INTRINSIC_1` instructions.
+  (Contributed by Mark Shannon in :gh:`99005`.)
+
+* Add the :opcode:`CALL_INTRINSIC_2` instruction.
+  (Contributed by Irit Katriel in :gh:`101799`.)
+
+* Add the :opcode:`CLEANUP_THROW` instruction.
+  (Contributed by Brandt Bucher in :gh:`90997`.)
+
+* Add the :opcode:`!END_SEND` instruction.
+  (Contributed by Mark Shannon in :gh:`103082`.)
+
+* Add the :opcode:`LOAD_FAST_AND_CLEAR` instruction as part of the
+  implementation of :pep:`709`. (Contributed by Carl Meyer in :gh:`101441`.)
+
+* Add the :opcode:`LOAD_FAST_CHECK` instruction.
+  (Contributed by Dennis Sweeney in :gh:`93143`.)
+
+* Add the :opcode:`LOAD_FROM_DICT_OR_DEREF`, :opcode:`LOAD_FROM_DICT_OR_GLOBALS`,
+  and :opcode:`LOAD_LOCALS` opcodes as part of the implementation of :pep:`695`.
+  Remove the :opcode:`!LOAD_CLASSDEREF` opcode, which can be replaced with
+  :opcode:`LOAD_LOCALS` plus :opcode:`LOAD_FROM_DICT_OR_DEREF`. (Contributed
+  by Jelle Zijlstra in :gh:`103764`.)
+
+* Add the :opcode:`LOAD_SUPER_ATTR` instruction. (Contributed by Carl Meyer and
+  Vladimir Matveev in :gh:`103497`.)
+
+* Add the :opcode:`RETURN_CONST` instruction. (Contributed by Wenyang Wang in :gh:`101632`.)
 
 Demos and Tools
 ===============
@@ -703,74 +1141,194 @@ Demos and Tools
 Deprecated
 ==========
 
-* :class:`typing.Hashable` and :class:`typing.Sized` aliases for :class:`collections.abc.Hashable`
-  and :class:`collections.abc.Sized`. (:gh:`94309`.)
+* :mod:`argparse`: The *type*, *choices*, and *metavar* parameters
+  of :class:`!argparse.BooleanOptionalAction` are deprecated
+  and will be removed in 3.14.
+  (Contributed by Nikita Sobolev in :gh:`92248`.)
 
-* The :mod:`sqlite3` :ref:`default adapters and converters
-  <sqlite3-default-converters>` are now deprecated.
-  Instead, use the :ref:`sqlite3-adapter-converter-recipes`
-  and tailor them to your needs.
-  (Contributed by Erlend E. Aasland in :gh:`90016`.)
+* :mod:`ast`: The following :mod:`ast` features have been deprecated in documentation since
+  Python 3.8, now cause a :exc:`DeprecationWarning` to be emitted at runtime
+  when they are accessed or used, and will be removed in Python 3.14:
 
-* In :meth:`~sqlite3.Cursor.execute`, :exc:`DeprecationWarning` is now emitted
-  when :ref:`named placeholders <sqlite3-placeholders>` are used together with
-  parameters supplied as a :term:`sequence` instead of as a :class:`dict`.
-  Starting from Python 3.14, using named placeholders with parameters supplied
-  as a sequence will raise a :exc:`~sqlite3.ProgrammingError`.
-  (Contributed by Erlend E. Aasland in :gh:`101698`.)
+  * :class:`!ast.Num`
+  * :class:`!ast.Str`
+  * :class:`!ast.Bytes`
+  * :class:`!ast.NameConstant`
+  * :class:`!ast.Ellipsis`
 
-* The 3-arg signatures (type, value, traceback) of :meth:`~coroutine.throw`,
-  :meth:`~generator.throw` and :meth:`~agen.athrow` are deprecated and
-  may be removed in a future version of Python. Use the single-arg versions
-  of these functions instead. (Contributed by Ofey Chan in :gh:`89874`.)
+  Use :class:`ast.Constant` instead.
+  (Contributed by Serhiy Storchaka in :gh:`90953`.)
 
-* :exc:`DeprecationWarning` is now raised when ``__package__`` on a
-  module differs from ``__spec__.parent`` (previously it was
-  :exc:`ImportWarning`).
-  (Contributed by Brett Cannon in :gh:`65961`.)
+* :mod:`asyncio`:
 
-* The :meth:`~asyncio.get_event_loop` method of the
-  default event loop policy now emits a :exc:`DeprecationWarning` if there
-  is no current event loop set and it decides to create one.
-  (Contributed by Serhiy Storchaka and Guido van Rossum in :gh:`100160`.)
+  * The child watcher classes :class:`asyncio.MultiLoopChildWatcher`,
+    :class:`asyncio.FastChildWatcher`, :class:`asyncio.AbstractChildWatcher`
+    and :class:`asyncio.SafeChildWatcher` are deprecated and
+    will be removed in Python 3.14.
+    (Contributed by Kumar Aditya in :gh:`94597`.)
 
-* The :mod:`xml.etree.ElementTree` module now emits :exc:`DeprecationWarning`
-  when testing the truth value of an :class:`xml.etree.ElementTree.Element`.
-  Before, the Python implementation emitted :exc:`FutureWarning`, and the C
-  implementation emitted nothing.
+  * :func:`asyncio.set_child_watcher`, :func:`asyncio.get_child_watcher`,
+    :meth:`asyncio.AbstractEventLoopPolicy.set_child_watcher` and
+    :meth:`asyncio.AbstractEventLoopPolicy.get_child_watcher` are deprecated
+    and will be removed in Python 3.14.
+    (Contributed by Kumar Aditya in :gh:`94597`.)
 
-* In accordance with :pep:`699`, the ``ma_version_tag`` field in :c:type:`PyDictObject`
-  is deprecated for extension modules. Accessing this field will generate a compiler
-  warning at compile time. This field will be removed in Python 3.14.
-  (Contributed by Ramvikrams and Kumar Aditya in :gh:`101193`. PEP by Ken Jin.)
+  * The :meth:`~asyncio.get_event_loop` method of the
+    default event loop policy now emits a :exc:`DeprecationWarning` if there
+    is no current event loop set and it decides to create one.
+    (Contributed by Serhiy Storchaka and Guido van Rossum in :gh:`100160`.)
+
+* :mod:`calendar`: ``calendar.January`` and ``calendar.February`` constants are deprecated and
+  replaced by :data:`calendar.JANUARY` and :data:`calendar.FEBRUARY`.
+  (Contributed by Prince Roshan in :gh:`103636`.)
+
+* :mod:`collections.abc`: Deprecated :class:`collections.abc.ByteString`.
+  Prefer :class:`Sequence` or :class:`collections.abc.Buffer`.
+  For use in typing, prefer a union, like ``bytes | bytearray``, or :class:`collections.abc.Buffer`.
+  (Contributed by Shantanu Jain in :gh:`91896`.)
+
+* :mod:`datetime`: :class:`datetime.datetime`'s :meth:`~datetime.datetime.utcnow` and
+  :meth:`~datetime.datetime.utcfromtimestamp` are deprecated and will be
+  removed in a future version. Instead, use timezone-aware objects to represent
+  datetimes in UTC: respectively, call :meth:`~datetime.datetime.now` and
+  :meth:`~datetime.datetime.fromtimestamp`  with the *tz* parameter set to
+  :const:`datetime.UTC`.
+  (Contributed by Paul Ganssle in :gh:`103857`.)
+
+* :mod:`email`: Deprecate the *isdst* parameter in :func:`email.utils.localtime`.
+  (Contributed by Alan Williams in :gh:`72346`.)
+
+* :mod:`importlib.abc`: Deprecated the following classes, scheduled for removal in
+  Python 3.14:
+
+  * :class:`!importlib.abc.ResourceReader`
+  * :class:`!importlib.abc.Traversable`
+  * :class:`!importlib.abc.TraversableResources`
+
+  Use :mod:`importlib.resources.abc` classes instead:
+
+  * :class:`importlib.resources.abc.Traversable`
+  * :class:`importlib.resources.abc.TraversableResources`
+
+  (Contributed by Jason R. Coombs and Hugo van Kemenade in :gh:`93963`.)
 
-* The ``st_ctime`` fields return by :func:`os.stat` and :func:`os.lstat` on
-  Windows are deprecated. In a future release, they will contain the last
-  metadata change time, consistent with other platforms. For now, they still
-  contain the creation time, which is also available in the new ``st_birthtime``
-  field. (Contributed by Steve Dower in :gh:`99726`.)
+* :mod:`itertools`: Deprecate the support for copy, deepcopy, and pickle operations,
+  which is undocumented, inefficient, historically buggy, and inconsistent.
+  This will be removed in 3.14 for a significant reduction in code
+  volume and maintenance burden.
+  (Contributed by Raymond Hettinger in :gh:`101588`.)
 
-* The :data:`sys.last_type`, :data:`sys.last_value` and :data:`sys.last_traceback`
+* :mod:`multiprocessing`: In Python 3.14, the default :mod:`multiprocessing`
+  start method will change to a safer one on Linux, BSDs,
+  and other non-macOS POSIX platforms where ``'fork'`` is currently
+  the default (:gh:`84559`). Adding a runtime warning about this was deemed too
+  disruptive as the majority of code is not expected to care. Use the
+  :func:`~multiprocessing.get_context` or
+  :func:`~multiprocessing.set_start_method` APIs to explicitly specify when
+  your code *requires* ``'fork'``.  See :ref:`contexts and start methods
+  <multiprocessing-start-methods>`.
+
+* :mod:`pkgutil`: :func:`pkgutil.find_loader` and :func:`pkgutil.get_loader`
+  are deprecated and will be removed in Python 3.14;
+  use :func:`importlib.util.find_spec` instead.
+  (Contributed by Nikita Sobolev in :gh:`97850`.)
+
+* :mod:`pty`: The module has two undocumented ``master_open()`` and ``slave_open()``
+  functions that have been deprecated since Python 2 but only gained a
+  proper :exc:`DeprecationWarning` in 3.12. Remove them in 3.14.
+  (Contributed by Soumendra Ganguly and Gregory P. Smith in :gh:`85984`.)
+
+* :mod:`os`:
+
+  * The ``st_ctime`` fields return by :func:`os.stat` and :func:`os.lstat` on
+    Windows are deprecated. In a future release, they will contain the last
+    metadata change time, consistent with other platforms. For now, they still
+    contain the creation time, which is also available in the new ``st_birthtime``
+    field. (Contributed by Steve Dower in :gh:`99726`.)
+
+  * On POSIX platforms, :func:`os.fork` can now raise a
+    :exc:`DeprecationWarning` when it can detect being called from a
+    multithreaded process. There has always been a fundamental incompatibility
+    with the POSIX platform when doing so. Even if such code *appeared* to work.
+    We added the warning to to raise awareness as issues encounted by code doing
+    this are becoming more frequent. See the :func:`os.fork` documentation for
+    more details along with `this discussion on fork being incompatible with threads
+    <https://discuss.python.org/t/33555>`_ for *why* we're now surfacing this
+    longstanding platform compatibility problem to developers.
+
+  When this warning appears due to usage of :mod:`multiprocessing` or
+  :mod:`concurrent.futures` the fix is to use a different
+  :mod:`multiprocessing` start method such as ``"spawn"`` or ``"forkserver"``.
+
+* :mod:`shutil`: The *onerror* argument of :func:`shutil.rmtree` is deprecated;
+  use *onexc* instead. (Contributed by Irit Katriel in :gh:`102828`.)
+
+* :mod:`sqlite3`:
+
+  * :ref:`default adapters and converters
+    <sqlite3-default-converters>` are now deprecated.
+    Instead, use the :ref:`sqlite3-adapter-converter-recipes`
+    and tailor them to your needs.
+    (Contributed by Erlend E. Aasland in :gh:`90016`.)
+
+  * In :meth:`~sqlite3.Cursor.execute`, :exc:`DeprecationWarning` is now emitted
+    when :ref:`named placeholders <sqlite3-placeholders>` are used together with
+    parameters supplied as a :term:`sequence` instead of as a :class:`dict`.
+    Starting from Python 3.14, using named placeholders with parameters supplied
+    as a sequence will raise a :exc:`~sqlite3.ProgrammingError`.
+    (Contributed by Erlend E. Aasland in :gh:`101698`.)
+
+* :mod:`sys`: The :data:`sys.last_type`, :data:`sys.last_value` and :data:`sys.last_traceback`
   fields are deprecated. Use :data:`sys.last_exc` instead.
   (Contributed by Irit Katriel in :gh:`102778`.)
 
-* The *onerror* argument of :func:`shutil.rmtree` is deprecated as will be removed
-  in Python 3.14. Use *onexc* instead. (Contributed by Irit Katriel in :gh:`102828`.)
-
-* Extracting tar archives without specifying *filter* is deprecated until
+* :mod:`tarfile`: Extracting tar archives without specifying *filter* is deprecated until
   Python 3.14, when ``'data'`` filter will become the default.
   See :ref:`tarfile-extraction-filter` for details.
 
-* ``calendar.January`` and ``calendar.February`` constants are deprecated and
-  replaced by :data:`calendar.Month.JANUARY` and :data:`calendar.Month.FEBRUARY`.
-  (Contributed by Prince Roshan in :gh:`103636`.)
+* :mod:`typing`:
+
+  * :class:`typing.Hashable` and :class:`typing.Sized`, aliases for
+    :class:`collections.abc.Hashable` and :class:`collections.abc.Sized` respectively, are
+    deprecated. (:gh:`94309`.)
+
+  * :class:`typing.ByteString`, deprecated since Python 3.9, now causes a
+    :exc:`DeprecationWarning` to be emitted when it is used.
+    (Contributed by Alex Waygood in :gh:`91896`.)
+
+* :mod:`xml.etree.ElementTree`: The module now emits :exc:`DeprecationWarning`
+  when testing the truth value of an :class:`xml.etree.ElementTree.Element`.
+  Before, the Python implementation emitted :exc:`FutureWarning`, and the C
+  implementation emitted nothing.
+  (Contributed by Jacob Walls in :gh:`83122`.)
+
+* The 3-arg signatures (type, value, traceback) of :meth:`coroutine throw()
+  <coroutine.throw>`, :meth:`generator throw() <generator.throw>` and
+  :meth:`async generator throw() <agen.athrow>` are deprecated and
+  may be removed in a future version of Python. Use the single-arg versions
+  of these functions instead. (Contributed by Ofey Chan in :gh:`89874`.)
+
+* :exc:`DeprecationWarning` is now raised when ``__package__`` on a
+  module differs from ``__spec__.parent`` (previously it was
+  :exc:`ImportWarning`).
+  (Contributed by Brett Cannon in :gh:`65961`.)
+
+* Setting ``__package__`` or ``__cached__`` on a module is deprecated,
+  and will cease to be set or taken into consideration by the import system in Python 3.14.
+  (Contributed by Brett Cannon in :gh:`65961`.)
 
 * The bitwise inversion operator (``~``) on bool is deprecated. It will throw an
   error in Python 3.14. Use ``not`` for logical negation of bools instead.
   In the rare case that you really need the bitwise inversion of the underlying
-  ``int``, convert to int explicitly with ``~int(x)``. (Contributed by Tim Hoffmann
+  ``int``, convert to int explicitly: ``~int(x)``. (Contributed by Tim Hoffmann
   in :gh:`103487`.)
 
+* Accessing :attr:`~codeobject.co_lnotab` on code objects was deprecated in
+  Python 3.10 via :pep:`626`,
+  but it only got a proper :exc:`DeprecationWarning` in 3.12,
+  therefore it will be removed in 3.14.
+  (Contributed by Nikita Sobolev in :gh:`101866`.)
+
 Pending Removal in Python 3.13
 ------------------------------
 
@@ -779,111 +1337,112 @@ and will be removed in Python 3.13.
 
 Modules (see :pep:`594`):
 
-* :mod:`aifc`
-* :mod:`audioop`
-* :mod:`cgi`
-* :mod:`cgitb`
-* :mod:`chunk`
-* :mod:`crypt`
-* :mod:`imghdr`
-* :mod:`mailcap`
-* :mod:`msilib`
-* :mod:`nis`
-* :mod:`nntplib`
-* :mod:`ossaudiodev`
-* :mod:`pipes`
-* :mod:`sndhdr`
-* :mod:`spwd`
-* :mod:`sunau`
-* :mod:`telnetlib`
-* :mod:`uu`
-* :mod:`xdrlib`
+* :mod:`!aifc`
+* :mod:`!audioop`
+* :mod:`!cgi`
+* :mod:`!cgitb`
+* :mod:`!chunk`
+* :mod:`!crypt`
+* :mod:`!imghdr`
+* :mod:`!mailcap`
+* :mod:`!msilib`
+* :mod:`!nis`
+* :mod:`!nntplib`
+* :mod:`!ossaudiodev`
+* :mod:`!pipes`
+* :mod:`!sndhdr`
+* :mod:`!spwd`
+* :mod:`!sunau`
+* :mod:`!telnetlib`
+* :mod:`!uu`
+* :mod:`!xdrlib`
+
+Other modules:
+
+* :mod:`!lib2to3`, and the :program:`2to3` program (:gh:`84540`)
 
 APIs:
 
 * :class:`!configparser.LegacyInterpolation` (:gh:`90765`)
-* :func:`locale.getdefaultlocale` (:gh:`90817`)
+* ``locale.resetlocale()`` (:gh:`90817`)
 * :meth:`!turtle.RawTurtle.settiltangle` (:gh:`50096`)
 * :func:`!unittest.findTestCases` (:gh:`50096`)
-* :func:`!unittest.makeSuite` (:gh:`50096`)
 * :func:`!unittest.getTestCaseNames` (:gh:`50096`)
+* :func:`!unittest.makeSuite` (:gh:`50096`)
+* :meth:`!unittest.TestProgram.usageExit` (:gh:`67048`)
 * :class:`!webbrowser.MacOSX` (:gh:`86421`)
+* :class:`classmethod` descriptor chaining (:gh:`89519`)
 
 Pending Removal in Python 3.14
 ------------------------------
 
-* Deprecated the following :mod:`importlib.abc` classes, scheduled for removal in
-  Python 3.14:
+The following APIs have been deprecated
+and will be removed in Python 3.14.
+
+* :mod:`argparse`: The *type*, *choices*, and *metavar* parameters
+  of :class:`!argparse.BooleanOptionalAction`
+
+* :mod:`ast`:
+
+  * :class:`!ast.Num`
+  * :class:`!ast.Str`
+  * :class:`!ast.Bytes`
+  * :class:`!ast.NameConstant`
+  * :class:`!ast.Ellipsis`
+
+* :mod:`asyncio`:
+
+  * :class:`!asyncio.MultiLoopChildWatcher`
+  * :class:`!asyncio.FastChildWatcher`
+  * :class:`!asyncio.AbstractChildWatcher`
+  * :class:`!asyncio.SafeChildWatcher`
+  * :func:`!asyncio.set_child_watcher`
+  * :func:`!asyncio.get_child_watcher`,
+  * :meth:`!asyncio.AbstractEventLoopPolicy.set_child_watcher`
+  * :meth:`!asyncio.AbstractEventLoopPolicy.get_child_watcher`
+
+* :mod:`collections.abc`: :class:`!collections.abc.ByteString`.
+
+* :mod:`email`: the *isdst* parameter in :func:`email.utils.localtime`.
+
+* :mod:`importlib.abc`:
 
   * :class:`!importlib.abc.ResourceReader`
   * :class:`!importlib.abc.Traversable`
   * :class:`!importlib.abc.TraversableResources`
 
-  Use :mod:`importlib.resources.abc` classes instead:
+* :mod:`itertools`: Support for copy, deepcopy, and pickle operations.
 
-  * :class:`importlib.resources.abc.Traversable`
-  * :class:`importlib.resources.abc.TraversableResources`
+* :mod:`pkgutil`:
 
-  (Contributed by Jason R. Coombs and Hugo van Kemenade in :gh:`93963`.)
+  * :func:`!pkgutil.find_loader`
+  * :func:`!pkgutil.get_loader`.
 
-* Deprecated :class:`collections.abc.ByteString`.
-  Prefer :class:`Sequence` or :class:`collections.abc.Buffer`.
-  For use in typing, prefer a union, like ``bytes | bytearray``, or :class:`collections.abc.Buffer`.
-  (Contributed by Shantanu Jain in :gh:`91896`.)
+* :mod:`pty`:
 
-* :class:`typing.ByteString`, deprecated since Python 3.9, now causes a
-  :exc:`DeprecationWarning` to be emitted when it is used.
+  * :func:`!pty.master_open`
+  * :func:`!pty.slave_open`
 
-* Creating immutable types (:data:`Py_TPFLAGS_IMMUTABLETYPE`) with mutable
-  bases using the C API.
+* :mod:`shutil`: The *onerror* argument of :func:`shutil.rmtree`
 
-* Deprecated the *isdst* parameter in :func:`email.utils.localtime`.
-  (Contributed by Alan Williams in :gh:`72346`.)
+* :mod:`typing`: :class:`!typing.ByteString`
 
-* ``__package__`` and ``__cached__`` will cease to be set or taken
-  into consideration by the import system (:gh:`97879`).
+* :mod:`xml.etree.ElementTree`: Testing the truth value of an :class:`xml.etree.ElementTree.Element`.
 
-* Testing the truth value of an :class:`xml.etree.ElementTree.Element`
-  is deprecated and will raise an exception in Python 3.14.
+* The ``__package__`` and ``__cached__`` attributes on module objects.
 
-* The default :mod:`multiprocessing` start method will change to a safer one on
-  Linux, BSDs, and other non-macOS POSIX platforms where ``'fork'`` is currently
-  the default (:gh:`84559`). Adding a runtime warning about this was deemed too
-  disruptive as the majority of code is not expected to care. Use the
-  :func:`~multiprocessing.get_context` or
-  :func:`~multiprocessing.set_start_method` APIs to explicitly specify when
-  your code *requires* ``'fork'``.  See :ref:`multiprocessing-start-methods`.
+* The :attr:`~codeobject.co_lnotab` attribute of code objects.
 
-* :mod:`pty` has two undocumented ``master_open()`` and ``slave_open()``
-  functions that have been deprecated since Python 2 but only gained a
-  proper :exc:`DeprecationWarning` in 3.12. Remove them in 3.14.
-
-* Accessing ``co_lnotab`` was deprecated in :pep:`626` since 3.10
-  and was planned to be removed in 3.12
-  but it only got a proper :exc:`DeprecationWarning` in 3.12.
-  May be removed in 3.14.
-  (Contributed by Nikita Sobolev in :gh:`101866`.)
+Pending Removal in Python 3.15
+------------------------------
 
-* The *onerror* argument of :func:`shutil.rmtree` is deprecated in 3.12,
-  and will be removed in 3.14.
+The following APIs have been deprecated
+and will be removed in Python 3.15.
 
-* :func:`pkgutil.find_loader` and :func:`pkgutil.get_loader`
-  now raise :exc:`DeprecationWarning`;
-  use :func:`importlib.util.find_spec` instead.
-  (Contributed by Nikita Sobolev in :gh:`97850`.)
-
-* The following :mod:`ast` features have been deprecated in documentation since
-  Python 3.8, now cause a :exc:`DeprecationWarning` to be emitted at runtime
-  when they are accessed or used, and will be removed in Python 3.14:
+APIs:
 
-  * :class:`!ast.Num`
-  * :class:`!ast.Str`
-  * :class:`!ast.Bytes`
-  * :class:`!ast.NameConstant`
-  * :class:`!ast.Ellipsis`
+* :func:`locale.getdefaultlocale` (:gh:`90817`)
 
-  Use :class:`ast.Constant` instead.
-  (Contributed by Serhiy Storchaka in :gh:`90953`.)
 
 Pending Removal in Future Versions
 ----------------------------------
@@ -891,6 +1450,8 @@ Pending Removal in Future Versions
 The following APIs were deprecated in earlier Python versions and will be removed,
 although there is currently no date scheduled for their removal.
 
+* :mod:`array`'s ``'u'`` format code (:gh:`57281`)
+
 * :class:`typing.Text` (:gh:`92332`)
 
 * Currently Python accepts numeric literals immediately followed by keywords,
@@ -906,12 +1467,40 @@ although there is currently no date scheduled for their removal.
 Removed
 =======
 
-* Remove the ``distutils`` package. It was deprecated in Python 3.10 by
+asynchat and asyncore
+---------------------
+
+* These two modules have been removed
+  according to the schedule in :pep:`594`,
+  having been deprecated in Python 3.6.
+  Use :mod:`asyncio` instead.
+  (Contributed by Nikita Sobolev in :gh:`96580`.)
+
+configparser
+------------
+
+* Several names deprecated in the :mod:`configparser` way back in 3.2 have
+  been removed per :gh:`89336`:
+
+  * :class:`configparser.ParsingError` no longer has a ``filename`` attribute
+    or argument. Use the ``source`` attribute and argument instead.
+  * :mod:`configparser` no longer has a ``SafeConfigParser`` class. Use the
+    shorter :class:`~configparser.ConfigParser` name instead.
+  * :class:`configparser.ConfigParser` no longer has a ``readfp`` method.
+    Use :meth:`~configparser.ConfigParser.read_file` instead.
+
+distutils
+---------
+
+* Remove the :py:mod:`!distutils` package. It was deprecated in Python 3.10 by
   :pep:`632` "Deprecate distutils module". For projects still using
   ``distutils`` and cannot be updated to something else, the ``setuptools``
   project can be installed: it still provides ``distutils``.
   (Contributed by Victor Stinner in :gh:`92584`.)
 
+ensurepip
+---------
+
 * Remove the bundled setuptools wheel from :mod:`ensurepip`,
   and stop installing setuptools in environments created by :mod:`venv`.
 
@@ -930,54 +1519,140 @@ Removed
 
   (Contributed by Pradyun Gedam in :gh:`95299`.)
 
-* Removed many old deprecated :mod:`unittest` features:
+enum
+----
 
-  - A number of :class:`~unittest.TestCase` method aliases:
+* Remove :mod:`enum`'s ``EnumMeta.__getattr__``, which is no longer needed for
+  enum attribute access.
+  (Contributed by Ethan Furman in :gh:`95083`.)
 
-    ============================ =============================== ===============
-       Deprecated alias           Method Name                     Deprecated in
-    ============================ =============================== ===============
-     ``failUnless``               :meth:`.assertTrue`             3.1
-     ``failIf``                   :meth:`.assertFalse`            3.1
-     ``failUnlessEqual``          :meth:`.assertEqual`            3.1
-     ``failIfEqual``              :meth:`.assertNotEqual`         3.1
-     ``failUnlessAlmostEqual``    :meth:`.assertAlmostEqual`      3.1
-     ``failIfAlmostEqual``        :meth:`.assertNotAlmostEqual`   3.1
-     ``failUnlessRaises``         :meth:`.assertRaises`           3.1
-     ``assert_``                  :meth:`.assertTrue`             3.2
-     ``assertEquals``             :meth:`.assertEqual`            3.2
-     ``assertNotEquals``          :meth:`.assertNotEqual`         3.2
-     ``assertAlmostEquals``       :meth:`.assertAlmostEqual`      3.2
-     ``assertNotAlmostEquals``    :meth:`.assertNotAlmostEqual`   3.2
-     ``assertRegexpMatches``      :meth:`.assertRegex`            3.2
-     ``assertRaisesRegexp``       :meth:`.assertRaisesRegex`      3.2
-     ``assertNotRegexpMatches``   :meth:`.assertNotRegex`         3.5
-    ============================ =============================== ===============
+ftplib
+------
 
-    You can use https://github.com/isidentical/teyit to automatically modernise
-    your unit tests.
+* Remove :mod:`ftplib`'s ``FTP_TLS.ssl_version`` class attribute: use the
+  *context* parameter instead.
+  (Contributed by Victor Stinner in :gh:`94172`.)
 
-  - Undocumented and broken :class:`~unittest.TestCase` method
-    ``assertDictContainsSubset`` (deprecated in Python 3.2).
+gzip
+----
 
-  - Undocumented :meth:`TestLoader.loadTestsFromModule
-    <unittest.TestLoader.loadTestsFromModule>` parameter *use_load_tests*
-    (deprecated and ignored since Python 3.2).
+* Remove the ``filename`` attribute of :mod:`gzip`'s :class:`gzip.GzipFile`,
+  deprecated since Python 2.6, use the :attr:`~gzip.GzipFile.name` attribute
+  instead. In write mode, the ``filename`` attribute added ``'.gz'`` file
+  extension if it was not present.
+  (Contributed by Victor Stinner in :gh:`94196`.)
 
-  - An alias of the :class:`~unittest.TextTestResult` class:
-    ``_TextTestResult`` (deprecated in Python 3.2).
+hashlib
+-------
 
-  (Contributed by Serhiy Storchaka in :issue:`45162`.)
+* Remove the pure Python implementation of :mod:`hashlib`'s
+  :func:`hashlib.pbkdf2_hmac()`, deprecated in Python 3.10. Python 3.10 and
+  newer requires OpenSSL 1.1.1 (:pep:`644`): this OpenSSL version provides
+  a C implementation of :func:`~hashlib.pbkdf2_hmac()` which is faster.
+  (Contributed by Victor Stinner in :gh:`94199`.)
 
-* Several names deprecated in the :mod:`configparser` way back in 3.2 have
-  been removed per :gh:`89336`:
+importlib
+---------
 
-  * :class:`configparser.ParsingError` no longer has a ``filename`` attribute
-    or argument. Use the ``source`` attribute and argument instead.
-  * :mod:`configparser` no longer has a ``SafeConfigParser`` class. Use the
-    shorter :class:`~configparser.ConfigParser` name instead.
-  * :class:`configparser.ConfigParser` no longer has a ``readfp`` method.
-    Use :meth:`~configparser.ConfigParser.read_file` instead.
+* Many previously deprecated cleanups in :mod:`importlib` have now been
+  completed:
+
+  * References to, and support for :meth:`!module_repr()` has been removed.
+    (Contributed by Barry Warsaw in :gh:`97850`.)
+
+  * ``importlib.util.set_package``, ``importlib.util.set_loader`` and
+    ``importlib.util.module_for_loader`` have all been removed. (Contributed by
+    Brett Cannon and Nikita Sobolev in :gh:`65961` and :gh:`97850`.)
+
+  * Support for ``find_loader()`` and ``find_module()`` APIs have been
+    removed.  (Contributed by Barry Warsaw in :gh:`98040`.)
+
+  * ``importlib.abc.Finder``, ``pkgutil.ImpImporter``, and ``pkgutil.ImpLoader``
+    have been removed.  (Contributed by Barry Warsaw in :gh:`98040`.)
+
+imp
+---
+
+* The :mod:`!imp` module has been removed.  (Contributed by Barry Warsaw in
+  :gh:`98040`.)
+
+  To migrate, consult the following correspondence table:
+
+    =================================  =======================================
+       imp                                importlib
+    =================================  =======================================
+    ``imp.NullImporter``               Insert ``None`` into ``sys.path_importer_cache``
+    ``imp.cache_from_source()``        :func:`importlib.util.cache_from_source`
+    ``imp.find_module()``              :func:`importlib.util.find_spec`
+    ``imp.get_magic()``                :attr:`importlib.util.MAGIC_NUMBER`
+    ``imp.get_suffixes()``             :attr:`importlib.machinery.SOURCE_SUFFIXES`, :attr:`importlib.machinery.EXTENSION_SUFFIXES`, and :attr:`importlib.machinery.BYTECODE_SUFFIXES`
+    ``imp.get_tag()``                  :attr:`sys.implementation.cache_tag <sys.implementation>`
+    ``imp.load_module()``              :func:`importlib.import_module`
+    ``imp.new_module(name)``           ``types.ModuleType(name)``
+    ``imp.reload()``                   :func:`importlib.reload`
+    ``imp.source_from_cache()``        :func:`importlib.util.source_from_cache`
+    ``imp.load_source()``              *See below*
+    =================================  =======================================
+
+  Replace ``imp.load_source()`` with::
+
+        import importlib.util
+        import importlib.machinery
+
+        def load_source(modname, filename):
+            loader = importlib.machinery.SourceFileLoader(modname, filename)
+            spec = importlib.util.spec_from_file_location(modname, filename, loader=loader)
+            module = importlib.util.module_from_spec(spec)
+            # The module is always executed and not cached in sys.modules.
+            # Uncomment the following line to cache the module.
+            # sys.modules[module.__name__] = module
+            loader.exec_module(module)
+            return module
+
+* Remove :mod:`!imp` functions and attributes with no replacements:
+
+  * Undocumented functions:
+
+    * ``imp.init_builtin()``
+    * ``imp.load_compiled()``
+    * ``imp.load_dynamic()``
+    * ``imp.load_package()``
+
+  * ``imp.lock_held()``, ``imp.acquire_lock()``, ``imp.release_lock()``:
+    the locking scheme has changed in Python 3.3 to per-module locks.
+  * ``imp.find_module()`` constants: ``SEARCH_ERROR``, ``PY_SOURCE``,
+    ``PY_COMPILED``, ``C_EXTENSION``, ``PY_RESOURCE``, ``PKG_DIRECTORY``,
+    ``C_BUILTIN``, ``PY_FROZEN``, ``PY_CODERESOURCE``, ``IMP_HOOK``.
+
+io
+--
+
+* Remove :mod:`io`'s ``io.OpenWrapper`` and ``_pyio.OpenWrapper``, deprecated in Python
+  3.10: just use :func:`open` instead. The :func:`open` (:func:`io.open`)
+  function is a built-in function. Since Python 3.10, :func:`!_pyio.open` is
+  also a static method.
+  (Contributed by Victor Stinner in :gh:`94169`.)
+
+locale
+------
+
+* Remove :mod:`locale`'s :func:`!locale.format` function, deprecated in Python 3.7:
+  use :func:`locale.format_string` instead.
+  (Contributed by Victor Stinner in :gh:`94226`.)
+
+smtpd
+-----
+
+* The ``smtpd`` module has been removed according to the schedule in :pep:`594`,
+  having been deprecated in Python 3.4.7 and 3.5.4.
+  Use aiosmtpd_ PyPI module or any other
+  :mod:`asyncio`-based server instead.
+  (Contributed by Oleg Iarygin in :gh:`93243`.)
+
+.. _aiosmtpd: https://pypi.org/project/aiosmtpd/
+
+sqlite3
+-------
 
 * The following undocumented :mod:`sqlite3` features, deprecated in Python
   3.10, are now removed:
@@ -995,63 +1670,19 @@ Removed
 
   (Contributed by Erlend E. Aasland in :gh:`92548`.)
 
-* ``smtpd`` has been removed according to the schedule in :pep:`594`,
-  having been deprecated in Python 3.4.7 and 3.5.4.
-  Use aiosmtpd_ PyPI module or any other
-  :mod:`asyncio`-based server instead.
-  (Contributed by Oleg Iarygin in :gh:`93243`.)
-
-.. _aiosmtpd: https://pypi.org/project/aiosmtpd/
-
-* ``asynchat`` and ``asyncore`` have been removed
-  according to the schedule in :pep:`594`,
-  having been deprecated in Python 3.6.
-  Use :mod:`asyncio` instead.
-  (Contributed by Nikita Sobolev in :gh:`96580`.)
-
-* Remove ``io.OpenWrapper`` and ``_pyio.OpenWrapper``, deprecated in Python
-  3.10: just use :func:`open` instead. The :func:`open` (:func:`io.open`)
-  function is a built-in function. Since Python 3.10, :func:`!_pyio.open` is
-  also a static method.
-  (Contributed by Victor Stinner in :gh:`94169`.)
+ssl
+---
 
-* Remove the :func:`!ssl.RAND_pseudo_bytes` function, deprecated in Python 3.6:
+* Remove :mod:`ssl`'s :func:`!ssl.RAND_pseudo_bytes` function, deprecated in Python 3.6:
   use :func:`os.urandom` or :func:`ssl.RAND_bytes` instead.
   (Contributed by Victor Stinner in :gh:`94199`.)
 
-* :mod:`gzip`: Remove the ``filename`` attribute of :class:`gzip.GzipFile`,
-  deprecated since Python 2.6, use the :attr:`~gzip.GzipFile.name` attribute
-  instead. In write mode, the ``filename`` attribute added ``'.gz'`` file
-  extension if it was not present.
-  (Contributed by Victor Stinner in :gh:`94196`.)
-
 * Remove the :func:`!ssl.match_hostname` function.
   It was deprecated in Python 3.7. OpenSSL performs
   hostname matching since Python 3.7, Python no longer uses the
   :func:`!ssl.match_hostname` function.
   (Contributed by Victor Stinner in :gh:`94199`.)
 
-* Remove the :func:`!locale.format` function, deprecated in Python 3.7:
-  use :func:`locale.format_string` instead.
-  (Contributed by Victor Stinner in :gh:`94226`.)
-
-* :mod:`hashlib`: Remove the pure Python implementation of
-  :func:`hashlib.pbkdf2_hmac()`, deprecated in Python 3.10. Python 3.10 and
-  newer requires OpenSSL 1.1.1 (:pep:`644`): this OpenSSL version provides
-  a C implementation of :func:`~hashlib.pbkdf2_hmac()` which is faster.
-  (Contributed by Victor Stinner in :gh:`94199`.)
-
-* :mod:`xml.etree.ElementTree`: Remove the ``ElementTree.Element.copy()`` method of the
-  pure Python implementation, deprecated in Python 3.10, use the
-  :func:`copy.copy` function instead.  The C implementation of :mod:`xml.etree.ElementTree`
-  has no ``copy()`` method, only a ``__copy__()`` method.
-  (Contributed by Victor Stinner in :gh:`94383`.)
-
-* :mod:`zipimport`: Remove ``find_loader()`` and ``find_module()`` methods,
-  deprecated in Python 3.10: use the ``find_spec()`` method instead.  See
-  :pep:`451` for the rationale.
-  (Contributed by Victor Stinner in :gh:`94379`.)
-
 * Remove the :func:`!ssl.wrap_socket` function, deprecated in Python 3.7:
   instead, create a :class:`ssl.SSLContext` object and call its
   :class:`ssl.SSLContext.wrap_socket` method. Any package that still uses
@@ -1061,26 +1692,79 @@ Removed
   Validation.
   (Contributed by Victor Stinner in :gh:`94199`.)
 
-* Many previously deprecated cleanups in :mod:`importlib` have now been
-  completed:
+unittest
+--------
 
-  * References to, and support for :meth:`!module_repr()` has been removed.
-    (Contributed by Barry Warsaw in :gh:`97850`.)
+* Remove many long-deprecated :mod:`unittest` features:
 
-  * ``importlib.util.set_package`` has been removed. (Contributed by Brett
-    Cannon in :gh:`65961`.)
+  .. _unittest-TestCase-removed-aliases:
 
-  * Support for ``find_loader()`` and ``find_module()`` APIs have been
-    removed.  (Contributed by Barry Warsaw in :gh:`98040`.)
+  * A number of :class:`~unittest.TestCase` method aliases:
+
+    ============================ =============================== ===============
+       Deprecated alias           Method Name                     Deprecated in
+    ============================ =============================== ===============
+     ``failUnless``               :meth:`.assertTrue`             3.1
+     ``failIf``                   :meth:`.assertFalse`            3.1
+     ``failUnlessEqual``          :meth:`.assertEqual`            3.1
+     ``failIfEqual``              :meth:`.assertNotEqual`         3.1
+     ``failUnlessAlmostEqual``    :meth:`.assertAlmostEqual`      3.1
+     ``failIfAlmostEqual``        :meth:`.assertNotAlmostEqual`   3.1
+     ``failUnlessRaises``         :meth:`.assertRaises`           3.1
+     ``assert_``                  :meth:`.assertTrue`             3.2
+     ``assertEquals``             :meth:`.assertEqual`            3.2
+     ``assertNotEquals``          :meth:`.assertNotEqual`         3.2
+     ``assertAlmostEquals``       :meth:`.assertAlmostEqual`      3.2
+     ``assertNotAlmostEquals``    :meth:`.assertNotAlmostEqual`   3.2
+     ``assertRegexpMatches``      :meth:`.assertRegex`            3.2
+     ``assertRaisesRegexp``       :meth:`.assertRaisesRegex`      3.2
+     ``assertNotRegexpMatches``   :meth:`.assertNotRegex`         3.5
+    ============================ =============================== ===============
+
+    You can use https://github.com/isidentical/teyit to automatically modernise
+    your unit tests.
+
+  * Undocumented and broken :class:`~unittest.TestCase` method
+    ``assertDictContainsSubset`` (deprecated in Python 3.2).
+
+  * Undocumented :meth:`TestLoader.loadTestsFromModule
+    <unittest.TestLoader.loadTestsFromModule>` parameter *use_load_tests*
+    (deprecated and ignored since Python 3.2).
+
+  * An alias of the :class:`~unittest.TextTestResult` class:
+    ``_TextTestResult`` (deprecated in Python 3.2).
+
+  (Contributed by Serhiy Storchaka in :gh:`89325`.)
+
+webbrowser
+----------
+
+* Remove support for obsolete browsers from :mod:`webbrowser`.
+  The removed browsers include: Grail, Mosaic, Netscape, Galeon, Skipstone,
+  Iceape, Firebird, and Firefox versions 35 and below (:gh:`102871`).
+
+xml.etree.ElementTree
+---------------------
 
-  * ``importlib.abc.Finder``, ``pkg.ImpImporter``, and ``pkg.ImpLoader`` have
-    been removed.  (Contributed by Barry Warsaw in :gh:`98040`.)
+* Remove the ``ElementTree.Element.copy()`` method of the
+  pure Python implementation, deprecated in Python 3.10, use the
+  :func:`copy.copy` function instead.  The C implementation of :mod:`xml.etree.ElementTree`
+  has no ``copy()`` method, only a ``__copy__()`` method.
+  (Contributed by Victor Stinner in :gh:`94383`.)
+
+zipimport
+---------
+
+* Remove :mod:`zipimport`'s ``find_loader()`` and ``find_module()`` methods,
+  deprecated in Python 3.10: use the ``find_spec()`` method instead.  See
+  :pep:`451` for the rationale.
+  (Contributed by Victor Stinner in :gh:`94379`.)
 
-  * The :mod:`!imp` module has been removed.  (Contributed by Barry Warsaw in
-    :gh:`98040`.)
+Others
+------
 
-* Removed the ``suspicious`` rule from the documentation Makefile, and
-  removed ``Doc/tools/rstlint.py``, both in favor of `sphinx-lint
+* Remove the ``suspicious`` rule from the documentation :file:`Makefile` and
+  :file:`Doc/tools/rstlint.py`, both in favor of `sphinx-lint
   <https://github.com/sphinx-contrib/sphinx-lint>`_.
   (Contributed by Julien Palard in :gh:`98179`.)
 
@@ -1092,15 +1776,16 @@ Removed
   (*ssl_context* in :mod:`imaplib`) instead.
   (Contributed by Victor Stinner in :gh:`94172`.)
 
-* :mod:`ftplib`: Remove the ``FTP_TLS.ssl_version`` class attribute: use the
-  *context* parameter instead.
-  (Contributed by Victor Stinner in :gh:`94172`.)
+* Remove ``Jython`` compatibility hacks from several stdlib modules and tests.
+  (Contributed by Nikita Sobolev in :gh:`99482`.)
 
-* Remove support for obsolete browsers from :mod:`webbrowser`.
-  Removed browsers include: Grail, Mosaic, Netscape, Galeon, Skipstone,
-  Iceape, Firebird, and Firefox versions 35 and below (:gh:`102871`).
+* Remove ``_use_broken_old_ctypes_structure_semantics_`` flag
+  from :mod:`ctypes` module.
+  (Contributed by Nikita Sobolev in :gh:`99285`.)
 
 
+.. _whatsnew312-porting-to-python312:
+
 Porting to Python 3.12
 ======================
 
@@ -1117,9 +1802,9 @@ Changes in the Python API
   contain ASCII letters and digits and underscore.
   (Contributed by Serhiy Storchaka in :gh:`91760`.)
 
-* Removed ``randrange()`` functionality deprecated since Python 3.10.  Formerly,
+* Remove ``randrange()`` functionality deprecated since Python 3.10.  Formerly,
   ``randrange(10.0)`` losslessly converted to ``randrange(10)``. Now, it raises a
-  :exc:`TypeError`. Also, the exception raised for non-integral values such as
+  :exc:`TypeError`. Also, the exception raised for non-integer values such as
   ``randrange(10.5)`` or ``randrange('10')`` has been changed from :exc:`ValueError` to
   :exc:`TypeError`.  This also prevents bugs where ``randrange(1e25)`` would silently
   select from a larger range than ``randrange(10**25)``.
@@ -1131,7 +1816,7 @@ Changes in the Python API
   to :term:`filesystem encoding and error handler`.
   Argument files should be encoded in UTF-8 instead of ANSI Codepage on Windows.
 
-* Removed the ``asyncore``-based ``smtpd`` module deprecated in Python 3.4.7
+* Remove the ``asyncore``-based ``smtpd`` module deprecated in Python 3.4.7
   and 3.5.4.  A recommended replacement is the
   :mod:`asyncio`-based aiosmtpd_ PyPI module.
 
@@ -1152,7 +1837,7 @@ Changes in the Python API
   so only a very small set of users might be affected.
   This change helps with interpreter isolation.  Furthermore, :mod:`syslog` is a wrapper
   around process-global resources, which are best managed from the main interpreter.
-  (Contributed by Dong-hee Na in :gh:`99127`.)
+  (Contributed by Donghee Na in :gh:`99127`.)
 
 * The undocumented locking behavior of :func:`~functools.cached_property`
   is removed, because it locked across all instances of the class, leading to high
@@ -1172,12 +1857,59 @@ Changes in the Python API
   that may be surprising or dangerous.
   See :ref:`tarfile-extraction-filter` for details.
 
+* The output of the :func:`tokenize.tokenize` and :func:`tokenize.generate_tokens`
+  functions is now changed due to the changes introduced in :pep:`701`. This
+  means that ``STRING`` tokens are not emitted any more for f-strings and the
+  tokens described in :pep:`701` are now produced instead: ``FSTRING_START``,
+  ``FSTRING_MIDDLE`` and ``FSTRING_END`` are now emitted for f-string "string"
+  parts in addition to the appropriate tokens for the tokenization in the
+  expression components. For example for the f-string ``f"start {1+1} end"``
+  the old version of the tokenizer emitted::
+
+    1,0-1,18:           STRING         'f"start {1+1} end"'
+
+  while the new version emits::
+
+      1,0-1,2:            FSTRING_START  'f"'
+      1,2-1,8:            FSTRING_MIDDLE 'start '
+      1,8-1,9:            OP             '{'
+      1,9-1,10:           NUMBER         '1'
+      1,10-1,11:          OP             '+'
+      1,11-1,12:          NUMBER         '1'
+      1,12-1,13:          OP             '}'
+      1,13-1,17:          FSTRING_MIDDLE ' end'
+      1,17-1,18:          FSTRING_END    '"'
+
+  Additionally, there may be some minor behavioral changes as a consequence of the
+  changes required to support :pep:`701`. Some of these changes include:
+
+  * The ``type`` attribute of the tokens emitted when tokenizing some invalid Python
+    characters such as ``!`` has changed from ``ERRORTOKEN`` to ``OP``.
+
+  * Incomplete single-line strings now also raise :exc:`tokenize.TokenError` as incomplete
+    multiline strings do.
+
+  * Some incomplete or invalid Python code now raises :exc:`tokenize.TokenError` instead of
+    returning arbitrary ``ERRORTOKEN`` tokens when tokenizing it.
+
+  * Mixing tabs and spaces as indentation in the same file is not supported anymore and will
+    raise a :exc:`TabError`.
+
+* The :mod:`threading` module now expects the :mod:`!_thread` module to have
+  an ``_is_main_interpreter`` attribute.  It is a function with no
+  arguments that returns ``True`` if the current interpreter is the
+  main interpreter.
+
+  Any library or application that provides a custom ``_thread`` module
+  should provide ``_is_main_interpreter()``.
+  (See :gh:`112826`.)
+
 Build Changes
 =============
 
-* Python no longer uses ``setup.py`` to build shared C extension modules.
+* Python no longer uses :file:`setup.py` to build shared C extension modules.
   Build parameters like headers and libraries are detected in ``configure``
-  script. Extensions are built by ``Makefile``. Most extensions use
+  script. Extensions are built by :file:`Makefile`. Most extensions use
   ``pkg-config`` and fall back to manual detection.
   (Contributed by Christian Heimes in :gh:`93939`.)
 
@@ -1188,9 +1920,9 @@ Build Changes
 
 * CPython now uses the ThinLTO option as the default link time optimization policy
   if the Clang compiler accepts the flag.
-  (Contributed by Dong-hee Na in :gh:`89536`.)
+  (Contributed by Donghee Na in :gh:`89536`.)
 
-* Add ``COMPILEALL_OPTS`` variable in Makefile to override :mod:`compileall`
+* Add ``COMPILEALL_OPTS`` variable in :file:`Makefile` to override :mod:`compileall`
   options (default: ``-j0``) in ``make install``. Also merged the 3
   ``compileall`` commands into a single command to build .pyc files for all
   optimization levels (0, 1, 2) at once.
@@ -1206,6 +1938,10 @@ Build Changes
 
 * ``PYTHON_FOR_REGEN`` now require Python 3.10 or newer.
 
+* Autoconf 2.71 and aclocal 1.16.4 is now required to regenerate
+  :file:`!configure`.
+  (Contributed by Christian Heimes in :gh:`89886`.)
+
 
 C API Changes
 =============
@@ -1213,8 +1949,9 @@ C API Changes
 New Features
 ------------
 
+.. _whatsnew312-pep697:
 
-* :pep:`697`: Introduced the :ref:`Unstable C API tier <unstable-c-api>`,
+* :pep:`697`: Introduce the :ref:`Unstable C API tier <unstable-c-api>`,
   intended for low-level tools like debuggers and JIT compilers.
   This API may change in each minor release of CPython without deprecation
   warnings.
@@ -1236,14 +1973,14 @@ New Features
 
   (Contributed by Petr Viktorin in :gh:`101101`.)
 
-* :pep:`697`: Added API for extending types whose instance memory layout is
+* :pep:`697`: Add an API for extending types whose instance memory layout is
   opaque:
 
   - :c:member:`PyType_Spec.basicsize` can be zero or negative to specify
     inheriting or extending the base class size.
   - :c:func:`PyObject_GetTypeData` and :c:func:`PyType_GetTypeDataSize`
     added to allow access to subclass-specific instance data.
-  - :const:`Py_TPFLAGS_ITEMS_AT_END` and :c:func:`PyObject_GetItemData`
+  - :c:macro:`Py_TPFLAGS_ITEMS_AT_END` and :c:func:`PyObject_GetItemData`
     added to allow safely extending certain variable-sized types, including
     :c:var:`PyType_Type`.
   - :c:macro:`Py_RELATIVE_OFFSET` added to allow defining
@@ -1251,7 +1988,7 @@ New Features
 
   (Contributed by Petr Viktorin in :gh:`103509`.)
 
-* Added the new limited C API function :c:func:`PyType_FromMetaclass`,
+* Add the new :ref:`limited C API <limited-c-api>` function :c:func:`PyType_FromMetaclass`,
   which generalizes the existing :c:func:`PyType_FromModuleAndSpec` using
   an additional metaclass argument.
   (Contributed by Wenzel Jakob in :gh:`93012`.)
@@ -1260,20 +1997,20 @@ New Features
   :ref:`the vectorcall protocol <vectorcall>` was added to the
   :ref:`Limited API <stable>`:
 
-  * :const:`Py_TPFLAGS_HAVE_VECTORCALL`
+  * :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL`
   * :c:func:`PyVectorcall_NARGS`
   * :c:func:`PyVectorcall_Call`
   * :c:type:`vectorcallfunc`
 
-  The :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
+  The :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
   when the class's :py:meth:`~object.__call__` method is reassigned.
   This makes vectorcall safe to use with mutable types (i.e. heap types
-  without the immutable flag, :const:`Py_TPFLAGS_IMMUTABLETYPE`).
+  without the immutable flag, :c:macro:`Py_TPFLAGS_IMMUTABLETYPE`).
   Mutable types that do not override :c:member:`~PyTypeObject.tp_call` now
   inherit the ``Py_TPFLAGS_HAVE_VECTORCALL`` flag.
   (Contributed by Petr Viktorin in :gh:`93274`.)
 
-  The :const:`Py_TPFLAGS_MANAGED_DICT` and :const:`Py_TPFLAGS_MANAGED_WEAKREF`
+  The :c:macro:`Py_TPFLAGS_MANAGED_DICT` and :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF`
   flags have been added. This allows extensions classes to support object
   ``__dict__`` and weakrefs with less bookkeeping,
   using less memory and with faster access.
@@ -1284,19 +2021,19 @@ New Features
 
   * :c:func:`PyObject_Vectorcall`
   * :c:func:`PyObject_VectorcallMethod`
-  * :const:`PY_VECTORCALL_ARGUMENTS_OFFSET`
+  * :c:macro:`PY_VECTORCALL_ARGUMENTS_OFFSET`
 
   This means that both the incoming and outgoing ends of the vector call
   protocol are now available in the :ref:`Limited API <stable>`. (Contributed
   by Wenzel Jakob in :gh:`98586`.)
 
-* Added two new public functions,
+* Add two new public functions,
   :c:func:`PyEval_SetProfileAllThreads` and
   :c:func:`PyEval_SetTraceAllThreads`, that allow to set tracing and profiling
   functions in all running threads in addition to the calling one. (Contributed
   by Pablo Galindo in :gh:`93503`.)
 
-* Added new function :c:func:`PyFunction_SetVectorcall` to the C API
+* Add new function :c:func:`PyFunction_SetVectorcall` to the C API
   which sets the vectorcall field of a given :c:type:`PyFunctionObject`.
   (Contributed by Andrew Frost in :gh:`92257`.)
 
@@ -1306,14 +2043,14 @@ New Features
   compilers, or debuggers.
   (Contributed by Carl Meyer in :gh:`91052`.)
 
-* Added :c:func:`PyType_AddWatcher` and :c:func:`PyType_Watch` API to register
+* Add :c:func:`PyType_AddWatcher` and :c:func:`PyType_Watch` API to register
   callbacks to receive notification on changes to a type.
   (Contributed by Carl Meyer in :gh:`91051`.)
 
-* Added :c:func:`PyCode_AddWatcher` and :c:func:`PyCode_ClearWatcher`
+* Add :c:func:`PyCode_AddWatcher` and :c:func:`PyCode_ClearWatcher`
   APIs to register callbacks to receive notification on creation and
   destruction of code objects.
-  (Contributed by Itamar Ostricher in :gh:`91054`.)
+  (Contributed by Itamar Oren in :gh:`91054`.)
 
 * Add :c:func:`PyFrame_GetVar` and :c:func:`PyFrame_GetVarString` functions to
   get a frame variable by its name.
@@ -1340,8 +2077,10 @@ New Features
   to replace the legacy-api :c:func:`!PyErr_Display`. (Contributed by
   Irit Katriel in :gh:`102755`).
 
-* :pep:`683`: Introduced Immortal Objects to Python which allows objects
-  to bypass reference counts and introduced changes to the C-API:
+.. _whatsnew312-pep683:
+
+* :pep:`683`: Introduce *Immortal Objects*, which allows objects
+  to bypass reference counts, and related changes to the C-API:
 
   - ``_Py_IMMORTAL_REFCNT``: The reference count that defines an object
       as immortal.
@@ -1353,11 +2092,22 @@ New Features
   - ``SSTATE_INTERNED_IMMORTAL_STATIC`` An identifier for interned unicode
        objects that are immortal and static
   - ``sys.getunicodeinternedsize`` This returns the total number of unicode
-      objects that have been interned. This is now needed for refleak.py to
+      objects that have been interned. This is now needed for :file:`refleak.py` to
       correctly track reference counts and allocated blocks
 
   (Contributed by Eddie Elizondo in :gh:`84436`.)
 
+* :pep:`684`: Add the new :c:func:`Py_NewInterpreterFromConfig`
+  function and :c:type:`PyInterpreterConfig`, which may be used
+  to create sub-interpreters with their own GILs.
+  (See :ref:`whatsnew312-pep684` for more info.)
+  (Contributed by Eric Snow in :gh:`104110`.)
+
+* In the limited C API version 3.12, :c:func:`Py_INCREF` and
+  :c:func:`Py_DECREF` functions are now implemented as opaque function calls to
+  hide implementation details.
+  (Contributed by Victor Stinner in :gh:`105387`.)
+
 Porting to Python 3.12
 ----------------------
 
@@ -1384,24 +2134,30 @@ Porting to Python 3.12
   :py:meth:`~class.__subclasses__` (using :c:func:`PyObject_CallMethod`,
   for example).
 
+* Add support of more formatting options (left aligning, octals, uppercase
+  hexadecimals, :c:type:`intmax_t`, :c:type:`ptrdiff_t`, :c:type:`wchar_t` C
+  strings, variable width and precision) in :c:func:`PyUnicode_FromFormat` and
+  :c:func:`PyUnicode_FromFormatV`.
+  (Contributed by Serhiy Storchaka in :gh:`98836`.)
+
 * An unrecognized format character in :c:func:`PyUnicode_FromFormat` and
   :c:func:`PyUnicode_FromFormatV` now sets a :exc:`SystemError`.
   In previous versions it caused all the rest of the format string to be
   copied as-is to the result string, and any extra arguments discarded.
   (Contributed by Serhiy Storchaka in :gh:`95781`.)
 
-* Fixed wrong sign placement in :c:func:`PyUnicode_FromFormat` and
+* Fix wrong sign placement in :c:func:`PyUnicode_FromFormat` and
   :c:func:`PyUnicode_FromFormatV`.
   (Contributed by Philip Georgi in :gh:`95504`.)
 
 * Extension classes wanting to add a ``__dict__`` or weak reference slot
-  should use :const:`Py_TPFLAGS_MANAGED_DICT` and
-  :const:`Py_TPFLAGS_MANAGED_WEAKREF` instead of ``tp_dictoffset`` and
+  should use :c:macro:`Py_TPFLAGS_MANAGED_DICT` and
+  :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead of ``tp_dictoffset`` and
   ``tp_weaklistoffset``, respectively.
   The use of ``tp_dictoffset`` and ``tp_weaklistoffset`` is still
   supported, but does not fully support multiple inheritance
   (:gh:`95589`), and performance may be worse.
-  Classes declaring :const:`Py_TPFLAGS_MANAGED_DICT` should call
+  Classes declaring :c:macro:`Py_TPFLAGS_MANAGED_DICT` must call
   :c:func:`!_PyObject_VisitManagedDict` and :c:func:`!_PyObject_ClearManagedDict`
   to traverse and clear their instance's dictionaries.
   To clear weakrefs, call :c:func:`PyObject_ClearWeakRefs`, as before.
@@ -1422,7 +2178,7 @@ Porting to Python 3.12
   before storing it. (Contributed by Mark Shannon in :gh:`101578`.)
 
 * ``_Py_RefTotal`` is no longer authoritative and only kept around
-  for ABI compabitility.  Note that it is an internal global and only
+  for ABI compatibility.  Note that it is an internal global and only
   available on debug builds.  If you happen to be using it then you'll
   need to start using ``_Py_GetGlobalRefTotal()``.
 
@@ -1439,11 +2195,67 @@ Porting to Python 3.12
   allowing incomplete initialization.
 
   Note that :c:func:`PyType_FromMetaclass` (added in Python 3.12)
-  already disallows creating classes whose metaclass overrides ``tp_new``.
+  already disallows creating classes whose metaclass overrides ``tp_new``
+  (:meth:`~object.__new__` in Python).
+
+  Since ``tp_new`` overrides almost everything ``PyType_From*`` functions do,
+  the two are incompatible with each other.
+  The existing behavior -- ignoring the metaclass for several steps
+  of type creation -- is unsafe in general, since (meta)classes assume that
+  ``tp_new`` was called.
+  There is no simple general workaround. One of the following may work for you:
+
+  - If you control the metaclass, avoid using ``tp_new`` in it:
+
+    - If initialization can be skipped, it can be done in
+      :c:member:`~PyTypeObject.tp_init` instead.
+    - If the metaclass doesn't need to be instantiated from Python,
+      set its ``tp_new`` to ``NULL`` using
+      the :c:macro:`Py_TPFLAGS_DISALLOW_INSTANTIATION` flag.
+      This makes it acceptable for ``PyType_From*`` functions.
+
+  - Avoid ``PyType_From*`` functions: if you don't need C-specific features
+    (slots or setting the instance size), create types by :ref:`calling <call>`
+    the metaclass.
+
+  - If you *know* the ``tp_new`` can be skipped safely, filter the deprecation
+    warning out using :func:`warnings.catch_warnings` from Python.
+
+* :c:var:`PyOS_InputHook` and :c:var:`PyOS_ReadlineFunctionPointer` are no
+  longer called in :ref:`subinterpreters <sub-interpreter-support>`. This is
+  because clients generally rely on process-wide global state (since these
+  callbacks have no way of recovering extension module state).
+
+  This also avoids situations where extensions may find themselves running in a
+  subinterpreter that they don't support (or haven't yet been loaded in). See
+  :gh:`104668` for more info.
+
+* :c:struct:`PyLongObject` has had its internals changed for better performance.
+  Although the internals of :c:struct:`PyLongObject` are private, they are used
+  by some extension modules.
+  The internal fields should no longer be accessed directly, instead the API
+  functions beginning ``PyLong_...`` should be used instead.
+  Two new *unstable* API functions are provided for efficient access to the
+  value of :c:struct:`PyLongObject`\s which fit into a single machine word:
+
+  * :c:func:`PyUnstable_Long_IsCompact`
+  * :c:func:`PyUnstable_Long_CompactValue`
+
+* Custom allocators, set via :c:func:`PyMem_SetAllocator`, are now
+  required to be thread-safe, regardless of memory domain.  Allocators
+  that don't have their own state, including "hooks", are not affected.
+  If your custom allocator is not already thread-safe and you need
+  guidance then please create a new GitHub issue
+  and CC ``@ericsnowcurrently``.
 
 Deprecated
 ----------
 
+* In accordance with :pep:`699`, the ``ma_version_tag`` field in :c:type:`PyDictObject`
+  is deprecated for extension modules. Accessing this field will generate a compiler
+  warning at compile time. This field will be removed in Python 3.14.
+  (Contributed by Ramvikrams and Kumar Aditya in :gh:`101193`. PEP by Ken Jin.)
+
 * Deprecate global configuration variable:
 
   * :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
@@ -1465,6 +2277,7 @@ Deprecated
   * :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyPreConfig.legacy_windows_fs_encoding`
   * :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
   * :c:var:`!Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
+  * :c:var:`!Py_HasFileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
   * :c:var:`!Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
   * :c:var:`!Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)
 
@@ -1472,13 +2285,13 @@ Deprecated
   :c:type:`PyConfig` instead.
   (Contributed by Victor Stinner in :gh:`77782`.)
 
-* Creating immutable types (:const:`Py_TPFLAGS_IMMUTABLETYPE`) with mutable
-  bases is deprecated and will be disabled in Python 3.14.
+* Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
+  bases is deprecated and will be disabled in Python 3.14. (:gh:`95388`)
 
-* The ``structmember.h`` header is deprecated, though it continues to be
+* The :file:`structmember.h` header is deprecated, though it continues to be
   available and there are no plans to remove it.
 
-  Its contents are now available just by including ``Python.h``,
+  Its contents are now available just by including :file:`Python.h`,
   with a ``Py`` prefix added if it was missing:
 
   - :c:struct:`PyMemberDef`, :c:func:`PyMember_GetOne` and
@@ -1488,14 +2301,14 @@ Deprecated
   - The flags :c:macro:`Py_READONLY` (previously ``READONLY``) and
     :c:macro:`Py_AUDIT_READ` (previously all uppercase)
 
-  Several items are not exposed from ``Python.h``:
+  Several items are not exposed from :file:`Python.h`:
 
   - :c:macro:`T_OBJECT` (use :c:macro:`Py_T_OBJECT_EX`)
   - :c:macro:`T_NONE` (previously undocumented, and pretty quirky)
   - The macro ``WRITE_RESTRICTED`` which does nothing.
   - The macros ``RESTRICTED`` and ``READ_RESTRICTED``, equivalents of
     :c:macro:`Py_AUDIT_READ`.
-  - In some configurations, ``<stddef.h>`` is not included from ``Python.h``.
+  - In some configurations, ``<stddef.h>`` is not included from :file:`Python.h`.
     It should be included manually when using ``offsetof()``.
 
   The deprecated header continues to provide its original
@@ -1522,32 +2335,112 @@ Deprecated
   overrides :c:member:`~PyTypeObject.tp_new` is deprecated.
   Call the metaclass instead.
 
+Pending Removal in Python 3.14
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* The ``ma_version_tag`` field in :c:type:`PyDictObject` for extension modules
+  (:pep:`699`; :gh:`101193`).
+
+* Global configuration variables:
+
+  * :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
+  * :c:var:`Py_VerboseFlag`: use :c:member:`PyConfig.verbose`
+  * :c:var:`Py_QuietFlag`: use :c:member:`PyConfig.quiet`
+  * :c:var:`Py_InteractiveFlag`: use :c:member:`PyConfig.interactive`
+  * :c:var:`Py_InspectFlag`: use :c:member:`PyConfig.inspect`
+  * :c:var:`Py_OptimizeFlag`: use :c:member:`PyConfig.optimization_level`
+  * :c:var:`Py_NoSiteFlag`: use :c:member:`PyConfig.site_import`
+  * :c:var:`Py_BytesWarningFlag`: use :c:member:`PyConfig.bytes_warning`
+  * :c:var:`Py_FrozenFlag`: use :c:member:`PyConfig.pathconfig_warnings`
+  * :c:var:`Py_IgnoreEnvironmentFlag`: use :c:member:`PyConfig.use_environment`
+  * :c:var:`Py_DontWriteBytecodeFlag`: use :c:member:`PyConfig.write_bytecode`
+  * :c:var:`Py_NoUserSiteDirectory`: use :c:member:`PyConfig.user_site_directory`
+  * :c:var:`Py_UnbufferedStdioFlag`: use :c:member:`PyConfig.buffered_stdio`
+  * :c:var:`Py_HashRandomizationFlag`: use :c:member:`PyConfig.use_hash_seed`
+    and :c:member:`PyConfig.hash_seed`
+  * :c:var:`Py_IsolatedFlag`: use :c:member:`PyConfig.isolated`
+  * :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyPreConfig.legacy_windows_fs_encoding`
+  * :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
+  * :c:var:`!Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
+  * :c:var:`!Py_HasFileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
+  * :c:var:`!Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
+  * :c:var:`!Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)
+
+  The :c:func:`Py_InitializeFromConfig` API should be used with
+  :c:type:`PyConfig` instead.
+
+* Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
+  bases (:gh:`95388`).
+
+Pending Removal in Python 3.15
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* :c:func:`PyImport_ImportModuleNoBlock`: use :c:func:`PyImport_ImportModule`
+* :c:type:`!Py_UNICODE_WIDE` type: use :c:type:`wchar_t`
+* :c:type:`Py_UNICODE` type: use :c:type:`wchar_t`
+* Python initialization functions:
+
+  * :c:func:`PySys_ResetWarnOptions`: clear :data:`sys.warnoptions` and
+    :data:`!warnings.filters`
+  * :c:func:`Py_GetExecPrefix`: get :data:`sys.exec_prefix`
+  * :c:func:`Py_GetPath`: get :data:`sys.path`
+  * :c:func:`Py_GetPrefix`: get :data:`sys.prefix`
+  * :c:func:`Py_GetProgramFullPath`: get :data:`sys.executable`
+  * :c:func:`Py_GetProgramName`: get :data:`sys.executable`
+  * :c:func:`Py_GetPythonHome`: get :c:member:`PyConfig.home` or
+    the :envvar:`PYTHONHOME` environment variable
+
+Pending Removal in Future Versions
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The following APIs are deprecated and will be removed,
+although there is currently no date scheduled for their removal.
+
+* :c:macro:`Py_TPFLAGS_HAVE_FINALIZE`: unneeded since Python 3.8
+* :c:func:`PyErr_Fetch`: use :c:func:`PyErr_GetRaisedException`
+* :c:func:`PyErr_NormalizeException`: use :c:func:`PyErr_GetRaisedException`
+* :c:func:`PyErr_Restore`: use :c:func:`PyErr_SetRaisedException`
+* :c:func:`PyModule_GetFilename`: use :c:func:`PyModule_GetFilenameObject`
+* :c:func:`PyOS_AfterFork`: use :c:func:`PyOS_AfterFork_Child`
+* :c:func:`PySlice_GetIndicesEx`: use :c:func:`PySlice_Unpack` and :c:func:`PySlice_AdjustIndices`
+* :c:func:`!PyUnicode_AsDecodedObject`: use :c:func:`PyCodec_Decode`
+* :c:func:`!PyUnicode_AsDecodedUnicode`: use :c:func:`PyCodec_Decode`
+* :c:func:`!PyUnicode_AsEncodedObject`: use :c:func:`PyCodec_Encode`
+* :c:func:`!PyUnicode_AsEncodedUnicode`: use :c:func:`PyCodec_Encode`
+* :c:func:`PyUnicode_READY`: unneeded since Python 3.12
+* :c:func:`!PyErr_Display`: use :c:func:`PyErr_DisplayException`
+* :c:func:`!_PyErr_ChainExceptions`: use ``_PyErr_ChainExceptions1``
+* :c:member:`!PyBytesObject.ob_shash` member:
+  call :c:func:`PyObject_Hash` instead
+* :c:member:`!PyDictObject.ma_version_tag` member
+* Thread Local Storage (TLS) API:
+
+  * :c:func:`PyThread_create_key`: use :c:func:`PyThread_tss_alloc`
+  * :c:func:`PyThread_delete_key`: use :c:func:`PyThread_tss_free`
+  * :c:func:`PyThread_set_key_value`: use :c:func:`PyThread_tss_set`
+  * :c:func:`PyThread_get_key_value`: use :c:func:`PyThread_tss_get`
+  * :c:func:`PyThread_delete_key_value`: use :c:func:`PyThread_tss_delete`
+  * :c:func:`PyThread_ReInitTLS`: unneeded since Python 3.7
+
 Removed
 -------
 
-* Remove the ``token.h`` header file. There was never any public tokenizer C
-  API. The ``token.h`` header file was only designed to be used by Python
+* Remove the :file:`token.h` header file. There was never any public tokenizer C
+  API. The :file:`token.h` header file was only designed to be used by Python
   internals.
   (Contributed by Victor Stinner in :gh:`92651`.)
 
 * Legacy Unicode APIs have been removed. See :pep:`623` for detail.
 
-   * :c:macro:`!PyUnicode_WCHAR_KIND`
-   * :c:func:`!PyUnicode_AS_UNICODE`
-   * :c:func:`!PyUnicode_AsUnicode`
-   * :c:func:`!PyUnicode_AsUnicodeAndSize`
-   * :c:func:`!PyUnicode_AS_DATA`
-   * :c:func:`!PyUnicode_FromUnicode`
-   * :c:func:`!PyUnicode_GET_SIZE`
-   * :c:func:`!PyUnicode_GetSize`
-   * :c:func:`!PyUnicode_GET_DATA_SIZE`
+  * :c:macro:`!PyUnicode_WCHAR_KIND`
+  * :c:func:`!PyUnicode_AS_UNICODE`
+  * :c:func:`!PyUnicode_AsUnicode`
+  * :c:func:`!PyUnicode_AsUnicodeAndSize`
+  * :c:func:`!PyUnicode_AS_DATA`
+  * :c:func:`!PyUnicode_FromUnicode`
+  * :c:func:`!PyUnicode_GET_SIZE`
+  * :c:func:`!PyUnicode_GetSize`
+  * :c:func:`!PyUnicode_GET_DATA_SIZE`
 
 * Remove the ``PyUnicode_InternImmortal()`` function macro.
   (Contributed by Victor Stinner in :gh:`85858`.)
-
-* Remove ``Jython`` compatibility hacks from several stdlib modules and tests.
-  (Contributed by Nikita Sobolev in :gh:`99482`.)
-
-* Remove ``_use_broken_old_ctypes_structure_semantics_`` flag
-  from :mod:`ctypes` module.
-  (Contributed by Nikita Sobolev in :gh:`99285`.)
diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst
new file mode 100644
index 00000000000000..4401deb0768c11
--- /dev/null
+++ b/Doc/whatsnew/3.13.rst
@@ -0,0 +1,1605 @@
+
+****************************
+  What's New In Python 3.13
+****************************
+
+:Editor: TBD
+
+.. Rules for maintenance:
+
+   * Anyone can add text to this document.  Do not spend very much time
+   on the wording of your changes, because your text will probably
+   get rewritten to some degree.
+
+   * The maintainer will go through Misc/NEWS periodically and add
+   changes; it's therefore more important to add your changes to
+   Misc/NEWS than to this file.
+
+   * This is not a complete list of every single change; completeness
+   is the purpose of Misc/NEWS.  Some changes I consider too small
+   or esoteric to include.  If such a change is added to the text,
+   I'll just remove it.  (This is another reason you shouldn't spend
+   too much time on writing your addition.)
+
+   * If you want to draw your new text to the attention of the
+   maintainer, add 'XXX' to the beginning of the paragraph or
+   section.
+
+   * It's OK to just add a fragmentary note about a change.  For
+   example: "XXX Describe the transmogrify() function added to the
+   socket module."  The maintainer will research the change and
+   write the necessary text.
+
+   * You can comment out your additions if you like, but it's not
+   necessary (especially when a final release is some months away).
+
+   * Credit the author of a patch or bugfix.   Just the name is
+   sufficient; the e-mail address isn't necessary.
+
+   * It's helpful to add the issue number as a comment:
+
+   XXX Describe the transmogrify() function added to the socket
+   module.
+   (Contributed by P.Y. Developer in :gh:`12345`.)
+
+   This saves the maintainer the effort of going through the VCS log
+   when researching a change.
+
+This article explains the new features in Python 3.13, compared to 3.12.
+
+For full details, see the :ref:`changelog <changelog>`.
+
+.. note::
+
+   Prerelease users should be aware that this document is currently in draft
+   form. It will be updated substantially as Python 3.13 moves towards release,
+   so it's worth checking back even after reading earlier versions.
+
+
+Summary -- Release highlights
+=============================
+
+.. This section singles out the most important changes in Python 3.13.
+   Brevity is key.
+
+
+.. PEP-sized items next.
+
+Important deprecations, removals or restrictions:
+
+* :ref:`PEP 594 <whatsnew313-pep594>`: The remaining 19 "dead batteries"
+  have been removed from the standard library:
+  :mod:`!aifc`, :mod:`!audioop`, :mod:`!cgi`, :mod:`!cgitb`, :mod:`!chunk`,
+  :mod:`!crypt`, :mod:`!imghdr`, :mod:`!mailcap`, :mod:`!msilib`, :mod:`!nis`,
+  :mod:`!nntplib`, :mod:`!ossaudiodev`, :mod:`!pipes`, :mod:`!sndhdr`, :mod:`!spwd`,
+  :mod:`!sunau`, :mod:`!telnetlib`, :mod:`!uu` and :mod:`!xdrlib`.
+
+* :pep:`602` ("Annual Release Cycle for Python") has been updated:
+
+  * Python 3.9 - 3.12 have one and a half years of full support,
+    followed by three and a half years of security fixes.
+  * Python 3.13 and later have two years of full support,
+    followed by three years of security fixes.
+
+
+New Features
+============
+
+Improved Error Messages
+-----------------------
+
+* The interpreter now colorizes error messages when displaying tracebacks by default.
+  This feature can be controlled via the new :envvar:`PYTHON_COLORS` environment
+  variable as well as the canonical ``NO_COLOR`` and ``FORCE_COLOR`` environment
+  variables. (Contributed by Pablo Galindo Salgado in :gh:`112730`.)
+
+Other Language Changes
+======================
+
+* Allow the *count* argument of :meth:`str.replace` to be a keyword.
+  (Contributed by Hugo van Kemenade in :gh:`106487`.)
+
+* Compiler now strip indents from docstrings.
+  This will reduce the size of :term:`bytecode cache <bytecode>` (e.g. ``.pyc`` file).
+  For example, cache file size for ``sqlalchemy.orm.session`` in SQLAlchemy 2.0
+  is reduced by about 5%.
+  This change will affect tools using docstrings, like :mod:`doctest`.
+  (Contributed by Inada Naoki in :gh:`81283`.)
+
+* The :func:`compile` built-in can now accept a new flag,
+  ``ast.PyCF_OPTIMIZED_AST``, which is similar to ``ast.PyCF_ONLY_AST``
+  except that the returned ``AST`` is optimized according to the value
+  of the ``optimize`` argument.
+  (Contributed by Irit Katriel in :gh:`108113`).
+
+* :mod:`multiprocessing`, :mod:`concurrent.futures`, :mod:`compileall`:
+  Replace :func:`os.cpu_count` with :func:`os.process_cpu_count` to select the
+  default number of worker threads and processes. Get the CPU affinity
+  if supported.
+  (Contributed by Victor Stinner in :gh:`109649`.)
+
+* :func:`os.path.realpath` now resolves MS-DOS style file names even if
+  the file is not accessible.
+  (Contributed by Moonsik Park in :gh:`82367`.)
+
+* Fixed a bug where a :keyword:`global` declaration in an :keyword:`except` block
+  is rejected when the global is used in the :keyword:`else` block.
+  (Contributed by Irit Katriel in :gh:`111123`.)
+
+* Added a new environment variable :envvar:`PYTHON_FROZEN_MODULES`. It
+  determines whether or not frozen modules are ignored by the import machinery,
+  equivalent of the :option:`-X frozen_modules <-X>` command-line option.
+  (Contributed by Yilei Yang in :gh:`111374`.)
+
+New Modules
+===========
+
+* None yet.
+
+
+Improved Modules
+================
+
+ast
+---
+
+* :func:`ast.parse` now accepts an optional argument ``optimize``
+  which is passed on to the :func:`compile` built-in. This makes it
+  possible to obtain an optimized ``AST``.
+  (Contributed by Irit Katriel in :gh:`108113`).
+
+array
+-----
+
+* Add ``'w'`` type code (``Py_UCS4``) that can be used for Unicode strings.
+  It can be used instead of ``'u'`` type code, which is deprecated.
+  (Contributed by Inada Naoki in :gh:`80480`.)
+
+asyncio
+-------
+
+* :meth:`asyncio.loop.create_unix_server` will now automatically remove
+  the Unix socket when the server is closed.
+  (Contributed by Pierre Ossman in :gh:`111246`.)
+
+copy
+----
+
+* Add :func:`copy.replace` function which allows to create a modified copy of
+  an object, which is especially useful for immutable objects.
+  It supports named tuples created with the factory function
+  :func:`collections.namedtuple`, :class:`~dataclasses.dataclass` instances,
+  various :mod:`datetime` objects, :class:`~inspect.Signature` objects,
+  :class:`~inspect.Parameter` objects, :ref:`code object <code-objects>`, and
+  any user classes which define the :meth:`!__replace__` method.
+  (Contributed by Serhiy Storchaka in :gh:`108751`.)
+
+dis
+---
+
+* Change the output of :mod:`dis` module functions to show logical
+  labels for jump targets and exception handlers, rather than offsets.
+  The offsets can be added with the new ``-O`` command line option or
+  the ``show_offsets`` parameter.
+  (Contributed by Irit Katriel in :gh:`112137`.)
+
+dbm
+---
+
+* Add :meth:`dbm.gnu.gdbm.clear` and :meth:`dbm.ndbm.ndbm.clear`  methods that remove all items
+  from the database.
+  (Contributed by Donghee Na in :gh:`107122`.)
+
+doctest
+-------
+
+* The :meth:`doctest.DocTestRunner.run` method now counts the number of skipped
+  tests. Add :attr:`doctest.DocTestRunner.skips` and
+  :attr:`doctest.TestResults.skipped` attributes.
+  (Contributed by Victor Stinner in :gh:`108794`.)
+
+glob
+----
+
+* Add :func:`glob.translate` function that converts a path specification with
+  shell-style wildcards to a regular expression.
+  (Contributed by Barney Gale in :gh:`72904`.)
+
+io
+--
+
+The :class:`io.IOBase` finalizer now logs the ``close()`` method errors with
+:data:`sys.unraisablehook`. Previously, errors were ignored silently by default,
+and only logged in :ref:`Python Development Mode <devmode>` or on :ref:`Python
+built on debug mode <debug-build>`.
+(Contributed by Victor Stinner in :gh:`62948`.)
+
+ipaddress
+---------
+
+* Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which returns the IPv4-mapped IPv6 address.
+  (Contributed by Charles Machalow in :gh:`109466`.)
+
+mmap
+----
+
+* The :class:`mmap.mmap` class now has an :meth:`~mmap.mmap.seekable` method
+  that can be used where it requires a file-like object with seekable and
+  the :meth:`~mmap.mmap.seek` method return the new absolute position.
+  (Contributed by Donghee Na and Sylvie Liberman in :gh:`111835`.)
+
+opcode
+------
+
+* Move ``opcode.ENABLE_SPECIALIZATION`` to ``_opcode.ENABLE_SPECIALIZATION``.
+  This field was added in 3.12, it was never documented and is not intended for
+  external usage. (Contributed by Irit Katriel in :gh:`105481`.)
+
+* Removed ``opcode.is_pseudo``, ``opcode.MIN_PSEUDO_OPCODE`` and
+  ``opcode.MAX_PSEUDO_OPCODE``, which were added in 3.12, were never
+  documented or exposed through ``dis``, and were not intended to be
+  used externally.
+
+os
+--
+
+* Add :func:`os.process_cpu_count` function to get the number of logical CPUs
+  usable by the calling thread of the current process.
+  (Contributed by Victor Stinner in :gh:`109649`.)
+
+* Add a low level interface for Linux's timer notification file descriptors
+  via :func:`os.timerfd_create`,
+  :func:`os.timerfd_settime`, :func:`os.timerfd_settime_ns`,
+  :func:`os.timerfd_gettime`, and :func:`os.timerfd_gettime_ns`,
+  :const:`os.TFD_NONBLOCK`, :const:`os.TFD_CLOEXEC`,
+  :const:`os.TFD_TIMER_ABSTIME`, and :const:`os.TFD_TIMER_CANCEL_ON_SET`
+  (Contributed by Masaru Tsuchiyama in :gh:`108277`.)
+
+* :func:`os.cpu_count` and :func:`os.process_cpu_count` can be overridden through
+  the new environment variable :envvar:`PYTHON_CPU_COUNT` or the new command-line option
+  :option:`-X cpu_count <-X>`. This option is useful for users who need to limit
+  CPU resources of a container system without having to modify the container (application code).
+  (Contributed by Donghee Na in :gh:`109595`)
+
+pathlib
+-------
+
+* Add :exc:`pathlib.UnsupportedOperation`, which is raised instead of
+  :exc:`NotImplementedError` when a path operation isn't supported.
+  (Contributed by Barney Gale in :gh:`89812`.)
+
+* Add :meth:`pathlib.Path.from_uri`, a new constructor to create a :class:`pathlib.Path`
+  object from a 'file' URI (``file:/``).
+  (Contributed by Barney Gale in :gh:`107465`.)
+
+* Add support for recursive wildcards in :meth:`pathlib.PurePath.match`.
+  (Contributed by Barney Gale in :gh:`73435`.)
+
+* Add *follow_symlinks* keyword-only argument to :meth:`pathlib.Path.glob`,
+  :meth:`~pathlib.Path.rglob`, :meth:`~pathlib.Path.is_file`,
+  :meth:`~pathlib.Path.is_dir`, :meth:`~pathlib.Path.owner`,
+  :meth:`~pathlib.Path.group`.
+  (Contributed by Barney Gale in :gh:`77609` and :gh:`105793`, and
+  Kamil Turek in :gh:`107962`).
+
+pdb
+---
+
+* Add ability to move between chained exceptions during post mortem debugging in :func:`~pdb.pm` using
+  the new ``exceptions [exc_number]`` command for Pdb. (Contributed by Matthias
+  Bussonnier in :gh:`106676`.)
+
+* Expressions/Statements whose prefix is a pdb command are now correctly
+  identified and executed.
+  (Contributed by Tian Gao in :gh:`108464`.)
+
+* ``sys.path[0]`` will no longer be replaced by the directory of the script
+  being debugged when ``sys.flags.safe_path`` is set (via the :option:`-P`
+  command line option or :envvar:`PYTHONSAFEPATH` environment variable).
+  (Contributed by Tian Gao and Christian Walther in :gh:`111762`.)
+
+sqlite3
+-------
+
+* A :exc:`ResourceWarning` is now emitted if a :class:`sqlite3.Connection`
+  object is not :meth:`closed <sqlite3.Connection.close>` explicitly.
+  (Contributed by Erlend E. Aasland in :gh:`105539`.)
+
+sys
+---
+
+* Add the :func:`sys._is_interned` function to test if the string was interned.
+  This function is not guaranteed to exist in all implementations of Python.
+  (Contributed by Serhiy Storchaka in :gh:`78573`.)
+
+tkinter
+-------
+
+* Add :mod:`tkinter` widget methods:
+  :meth:`!tk_busy_hold`, :meth:`!tk_busy_configure`,
+  :meth:`!tk_busy_cget`, :meth:`!tk_busy_forget`,
+  :meth:`!tk_busy_current`, and :meth:`!tk_busy_status`.
+  (Contributed by Miguel, klappnase and Serhiy Storchaka in :gh:`72684`.)
+
+* Add support of the "vsapi" element type in
+  the :meth:`~tkinter.ttk.Style.element_create` method of
+  :class:`tkinter.ttk.Style`.
+  (Contributed by Serhiy Storchaka in :gh:`68166`.)
+
+traceback
+---------
+
+* Add *show_group* parameter to :func:`traceback.TracebackException.format_exception_only`
+  to format the nested exceptions of a :exc:`BaseExceptionGroup` instance, recursively.
+  (Contributed by Irit Katriel in :gh:`105292`.)
+
+* Add the field *exc_type_str* to :class:`~traceback.TracebackException`, which
+  holds a string display of the *exc_type*. Deprecate the field *exc_type*
+  which holds the type object itself. Add parameter *save_exc_type* (default
+  ``True``) to indicate whether ``exc_type`` should be saved.
+  (Contributed by Irit Katriel in :gh:`112332`.)
+
+typing
+------
+
+* Add :func:`typing.get_protocol_members` to return the set of members
+  defining a :class:`typing.Protocol`. Add :func:`typing.is_protocol` to
+  check whether a class is a :class:`typing.Protocol`. (Contributed by Jelle Zijlstra in
+  :gh:`104873`.)
+
+unicodedata
+-----------
+
+* The Unicode database has been updated to version 15.1.0. (Contributed by
+  James Gerity in :gh:`109559`.)
+
+venv
+----
+
+* Add support for adding source control management (SCM) ignore files to a
+  virtual environment's directory. By default, Git is supported. This is
+  implemented as opt-in via the API which can be extended to support other SCMs
+  (:class:`venv.EnvBuilder` and :func:`venv.create`), and opt-out via the CLI
+  (using ``--without-scm-ignore-files``). (Contributed by Brett Cannon in
+  :gh:`108125`.)
+
+warnings
+--------
+
+* The new :func:`warnings.deprecated` decorator provides a way to communicate
+  deprecations to :term:`static type checkers <static type checker>` and
+  to warn on usage of deprecated classes and functions. A runtime deprecation
+  warning may also be emitted when a decorated function or class is used at runtime.
+  See :pep:`702`. (Contributed by Jelle Zijlstra in :gh:`104003`.)
+
+Optimizations
+=============
+
+* :func:`textwrap.indent` is now ~30% faster than before for large input.
+  (Contributed by Inada Naoki in :gh:`107369`.)
+
+
+Deprecated
+==========
+
+* :mod:`array`: :mod:`array`'s ``'u'`` format code, deprecated in docs since Python 3.3,
+  emits :exc:`DeprecationWarning` since 3.13
+  and will be removed in Python 3.16.
+  Use the ``'w'`` format code instead.
+  (contributed by Hugo van Kemenade in :gh:`80480`)
+
+* :mod:`ctypes`: Deprecate undocumented :func:`!ctypes.SetPointerType`
+  and :func:`!ctypes.ARRAY` functions.
+  Replace ``ctypes.ARRAY(item_type, size)`` with ``item_type * size``.
+  (Contributed by Victor Stinner in :gh:`105733`.)
+
+* :mod:`getopt` and :mod:`optparse` modules: They are now
+  :term:`soft deprecated`: the :mod:`argparse` should be used for new projects.
+  Previously, the :mod:`optparse` module was already deprecated, its removal
+  was not scheduled, and no warnings was emitted: so there is no change in
+  practice.
+  (Contributed by Victor Stinner in :gh:`106535`.)
+
+* :mod:`http.server`: :class:`http.server.CGIHTTPRequestHandler` now emits a
+  :exc:`DeprecationWarning` as it will be removed in 3.15.  Process based CGI
+  http servers have been out of favor for a very long time.  This code was
+  outdated, unmaintained, and rarely used.  It has a high potential for both
+  security and functionality bugs.  This includes removal of the ``--cgi``
+  flag to the ``python -m http.server`` command line in 3.15.
+
+* :mod:`traceback`:
+
+  * The field *exc_type* of :class:`traceback.TracebackException` is
+    deprecated. Use *exc_type_str* instead.
+
+* :mod:`typing`:
+
+  * Creating a :class:`typing.NamedTuple` class using keyword arguments to denote
+    the fields (``NT = NamedTuple("NT", x=int, y=int)``) is deprecated, and will
+    be disallowed in Python 3.15. Use the class-based syntax or the functional
+    syntax instead. (Contributed by Alex Waygood in :gh:`105566`.)
+
+  * When using the functional syntax to create a :class:`typing.NamedTuple`
+    class or a :class:`typing.TypedDict` class, failing to pass a value to the
+    'fields' parameter (``NT = NamedTuple("NT")`` or ``TD = TypedDict("TD")``) is
+    deprecated. Passing ``None`` to the 'fields' parameter
+    (``NT = NamedTuple("NT", None)`` or ``TD = TypedDict("TD", None)``) is also
+    deprecated. Both will be disallowed in Python 3.15. To create a NamedTuple
+    class with 0 fields, use ``class NT(NamedTuple): pass`` or
+    ``NT = NamedTuple("NT", [])``. To create a TypedDict class with 0 fields, use
+    ``class TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
+    (Contributed by Alex Waygood in :gh:`105566` and :gh:`105570`.)
+
+  * :func:`typing.no_type_check_decorator` is deprecated, and scheduled for
+    removal in Python 3.15. After eight years in the :mod:`typing` module, it
+    has yet to be supported by any major type checkers.
+    (Contributed by Alex Waygood in :gh:`106309`.)
+
+  * :data:`typing.AnyStr` is deprecated. In Python 3.16, it will be removed from
+    ``typing.__all__``, and a :exc:`DeprecationWarning` will be emitted when it
+    is imported or accessed. It will be removed entirely in Python 3.18. Use
+    the new :ref:`type parameter syntax <type-params>` instead.
+    (Contributed by Michael The in :gh:`107116`.)
+
+* :mod:`wave`: Deprecate the ``getmark()``, ``setmark()`` and ``getmarkers()``
+  methods of the :class:`wave.Wave_read` and :class:`wave.Wave_write` classes.
+  They will be removed in Python 3.15.
+  (Contributed by Victor Stinner in :gh:`105096`.)
+
+* Passing more than one positional argument to :func:`sqlite3.connect` and the
+  :class:`sqlite3.Connection` constructor is deprecated. The remaining
+  parameters will become keyword-only in Python 3.15.
+
+  Deprecate passing name, number of arguments, and the callable as keyword
+  arguments, for the following :class:`sqlite3.Connection` APIs:
+
+  * :meth:`~sqlite3.Connection.create_function`
+  * :meth:`~sqlite3.Connection.create_aggregate`
+
+  Deprecate passing the callback callable by keyword for the following
+  :class:`sqlite3.Connection` APIs:
+
+  * :meth:`~sqlite3.Connection.set_authorizer`
+  * :meth:`~sqlite3.Connection.set_progress_handler`
+  * :meth:`~sqlite3.Connection.set_trace_callback`
+
+  The affected parameters will become positional-only in Python 3.15.
+
+  (Contributed by Erlend E. Aasland in :gh:`107948` and :gh:`108278`.)
+
+* The ``dis.HAVE_ARGUMENT`` separator is deprecated. Check membership
+  in :data:`~dis.hasarg` instead.
+  (Contributed by Irit Katriel in :gh:`109319`.)
+
+* Deprecate non-standard format specifier "N" for :class:`decimal.Decimal`.
+  It was not documented and only supported in the C implementation.
+  (Contributed by Serhiy Storchaka in :gh:`89902`.)
+
+* Emit deprecation warning for non-integer numbers in :mod:`gettext` functions
+  and methods that consider plural forms even if the translation was not found.
+  (Contributed by Serhiy Storchaka in :gh:`88434`.)
+
+* Calling :meth:`frame.clear` on a suspended frame raises :exc:`RuntimeError`
+  (as has always been the case for an executing frame).
+  (Contributed by Irit Katriel in :gh:`79932`.)
+
+* Assignment to a function's ``__code__`` attribute where the new code
+  object's type does not match the function's type, is deprecated. The
+  different types are: plain function, generator, async generator and
+  coroutine.
+  (Contributed by Irit Katriel in :gh:`81137`.)
+
+
+Pending Removal in Python 3.14
+------------------------------
+
+* :mod:`argparse`: The *type*, *choices*, and *metavar* parameters
+  of :class:`!argparse.BooleanOptionalAction` are deprecated
+  and will be removed in 3.14.
+  (Contributed by Nikita Sobolev in :gh:`92248`.)
+
+* :mod:`ast`: The following features have been deprecated in documentation
+  since Python 3.8, now cause a :exc:`DeprecationWarning` to be emitted at
+  runtime when they are accessed or used, and will be removed in Python 3.14:
+
+  * :class:`!ast.Num`
+  * :class:`!ast.Str`
+  * :class:`!ast.Bytes`
+  * :class:`!ast.NameConstant`
+  * :class:`!ast.Ellipsis`
+
+  Use :class:`ast.Constant` instead.
+  (Contributed by Serhiy Storchaka in :gh:`90953`.)
+
+* :mod:`collections.abc`: Deprecated :class:`~collections.abc.ByteString`.
+  Prefer :class:`!Sequence` or :class:`~collections.abc.Buffer`.
+  For use in typing, prefer a union, like ``bytes | bytearray``,
+  or :class:`collections.abc.Buffer`.
+  (Contributed by Shantanu Jain in :gh:`91896`.)
+
+* :mod:`email`: Deprecated the *isdst* parameter in :func:`email.utils.localtime`.
+  (Contributed by Alan Williams in :gh:`72346`.)
+
+* :mod:`importlib`: ``__package__`` and ``__cached__`` will cease to be set or
+  taken into consideration by the import system (:gh:`97879`).
+
+* :mod:`importlib.abc` deprecated classes:
+
+  * :class:`!importlib.abc.ResourceReader`
+  * :class:`!importlib.abc.Traversable`
+  * :class:`!importlib.abc.TraversableResources`
+
+  Use :mod:`importlib.resources.abc` classes instead:
+
+  * :class:`importlib.resources.abc.Traversable`
+  * :class:`importlib.resources.abc.TraversableResources`
+
+  (Contributed by Jason R. Coombs and Hugo van Kemenade in :gh:`93963`.)
+
+* :mod:`itertools` had undocumented, inefficient, historically buggy,
+  and inconsistent support for copy, deepcopy, and pickle operations.
+  This will be removed in 3.14 for a significant reduction in code
+  volume and maintenance burden.
+  (Contributed by Raymond Hettinger in :gh:`101588`.)
+
+* :mod:`multiprocessing`: The default start method will change to a safer one on
+  Linux, BSDs, and other non-macOS POSIX platforms where ``'fork'`` is currently
+  the default (:gh:`84559`). Adding a runtime warning about this was deemed too
+  disruptive as the majority of code is not expected to care. Use the
+  :func:`~multiprocessing.get_context` or
+  :func:`~multiprocessing.set_start_method` APIs to explicitly specify when
+  your code *requires* ``'fork'``.  See :ref:`multiprocessing-start-methods`.
+
+* :mod:`pathlib`: :meth:`~pathlib.PurePath.is_relative_to`,
+  :meth:`~pathlib.PurePath.relative_to`: passing additional arguments is
+  deprecated.
+
+* :func:`pkgutil.find_loader` and :func:`pkgutil.get_loader`
+  now raise :exc:`DeprecationWarning`;
+  use :func:`importlib.util.find_spec` instead.
+  (Contributed by Nikita Sobolev in :gh:`97850`.)
+
+* :mod:`pty`:
+
+  * ``master_open()``: use :func:`pty.openpty`.
+  * ``slave_open()``: use :func:`pty.openpty`.
+
+* :func:`shutil.rmtree` *onerror* parameter is deprecated in 3.12,
+  and will be removed in 3.14: use the *onexc* parameter instead.
+
+* :mod:`sqlite3`:
+
+  * :data:`~sqlite3.version` and :data:`~sqlite3.version_info`.
+
+  * :meth:`~sqlite3.Cursor.execute` and :meth:`~sqlite3.Cursor.executemany`
+    if :ref:`named placeholders <sqlite3-placeholders>` are used and
+    *parameters* is a sequence instead of a :class:`dict`.
+
+  * date and datetime adapter, date and timestamp converter:
+    see the :mod:`sqlite3` documentation for suggested replacement recipes.
+
+* :class:`types.CodeType`: Accessing :attr:`~codeobject.co_lnotab` was
+  deprecated in :pep:`626`
+  since 3.10 and was planned to be removed in 3.12,
+  but it only got a proper :exc:`DeprecationWarning` in 3.12.
+  May be removed in 3.14.
+  (Contributed by Nikita Sobolev in :gh:`101866`.)
+
+* :mod:`typing`: :class:`~typing.ByteString`, deprecated since Python 3.9,
+  now causes a :exc:`DeprecationWarning` to be emitted when it is used.
+
+* :class:`!urllib.parse.Quoter` is deprecated: it was not intended to be a
+  public API.
+  (Contributed by Gregory P. Smith in :gh:`88168`.)
+
+* :mod:`xml.etree.ElementTree`: Testing the truth value of an
+  :class:`~xml.etree.ElementTree.Element` is deprecated and will raise an
+  exception in Python 3.14.
+
+Pending Removal in Python 3.15
+------------------------------
+
+* :class:`http.server.CGIHTTPRequestHandler` will be removed along with its
+  related ``--cgi`` flag to ``python -m http.server``.  It was obsolete and
+  rarely used.  No direct replacement exists.  *Anything* is better than CGI
+  to interface a web server with a request handler.
+
+* :class:`locale`: :func:`locale.getdefaultlocale` was deprecated in Python 3.11
+  and originally planned for removal in Python 3.13 (:gh:`90817`),
+  but removal has been postponed to Python 3.15.
+  Use :func:`locale.setlocale()`, :func:`locale.getencoding()` and
+  :func:`locale.getlocale()` instead.
+  (Contributed by Hugo van Kemenade in :gh:`111187`.)
+
+* :class:`typing.NamedTuple`:
+
+  * The undocumented keyword argument syntax for creating NamedTuple classes
+    (``NT = NamedTuple("NT", x=int)``) is deprecated, and will be disallowed in
+    3.15. Use the class-based syntax or the functional syntax instead.
+
+  * When using the functional syntax to create a NamedTuple class, failing to
+    pass a value to the 'fields' parameter (``NT = NamedTuple("NT")``) is
+    deprecated. Passing ``None`` to the 'fields' parameter
+    (``NT = NamedTuple("NT", None)``) is also deprecated. Both will be
+    disallowed in Python 3.15. To create a NamedTuple class with 0 fields, use
+    ``class NT(NamedTuple): pass`` or ``NT = NamedTuple("NT", [])``.
+
+* :class:`typing.TypedDict`: When using the functional syntax to create a
+  TypedDict class, failing to pass a value to the 'fields' parameter (``TD =
+  TypedDict("TD")``) is deprecated. Passing ``None`` to the 'fields' parameter
+  (``TD = TypedDict("TD", None)``) is also deprecated. Both will be disallowed
+  in Python 3.15. To create a TypedDict class with 0 fields, use ``class
+  TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
+
+* :mod:`wave`: Deprecate the ``getmark()``, ``setmark()`` and ``getmarkers()``
+  methods of the :class:`wave.Wave_read` and :class:`wave.Wave_write` classes.
+  They will be removed in Python 3.15.
+  (Contributed by Victor Stinner in :gh:`105096`.)
+
+* Passing any arguments to :func:`threading.RLock` is now deprecated.
+  C version allows any numbers of args and kwargs,
+  but they are just ignored. Python version does not allow any arguments.
+  All arguments will be removed from :func:`threading.RLock` in Python 3.15.
+  (Contributed by Nikita Sobolev in :gh:`102029`.)
+
+Pending Removal in Python 3.16
+------------------------------
+
+* :class:`array.array` ``'u'`` type (:c:type:`wchar_t`):
+  use the ``'w'`` type instead (``Py_UCS4``).
+
+Pending Removal in Future Versions
+----------------------------------
+
+The following APIs were deprecated in earlier Python versions and will be removed,
+although there is currently no date scheduled for their removal.
+
+* :mod:`argparse`: Nesting argument groups and nesting mutually exclusive
+  groups are deprecated.
+
+* :mod:`builtins`:
+
+  * ``~bool``, bitwise inversion on bool.
+  * ``bool(NotImplemented)``.
+  * Generators: ``throw(type, exc, tb)`` and ``athrow(type, exc, tb)``
+    signature is deprecated: use ``throw(exc)`` and ``athrow(exc)`` instead,
+    the single argument signature.
+  * Currently Python accepts numeric literals immediately followed by keywords,
+    for example ``0in x``, ``1or x``, ``0if 1else 2``.  It allows confusing and
+    ambiguous expressions like ``[0x1for x in y]`` (which can be interpreted as
+    ``[0x1 for x in y]`` or ``[0x1f or x in y]``).  A syntax warning is raised
+    if the numeric literal is immediately followed by one of keywords
+    :keyword:`and`, :keyword:`else`, :keyword:`for`, :keyword:`if`,
+    :keyword:`in`, :keyword:`is` and :keyword:`or`.  In a future release it
+    will be changed to a syntax error. (:gh:`87999`)
+  * Support for ``__index__()`` and ``__int__()`` method returning non-int type:
+    these methods will be required to return an instance of a strict subclass of
+    :class:`int`.
+  * Support for ``__float__()`` method returning a strict subclass of
+    :class:`float`: these methods will be required to return an instance of
+    :class:`float`.
+  * Support for ``__complex__()`` method returning a strict subclass of
+    :class:`complex`: these methods will be required to return an instance of
+    :class:`complex`.
+  * Delegation of ``int()`` to ``__trunc__()`` method.
+
+* :mod:`calendar`: ``calendar.January`` and ``calendar.February`` constants are
+  deprecated and replaced by :data:`calendar.JANUARY` and
+  :data:`calendar.FEBRUARY`.
+  (Contributed by Prince Roshan in :gh:`103636`.)
+
+* :mod:`datetime`:
+
+  * :meth:`~datetime.datetime.utcnow`:
+    use ``datetime.datetime.now(tz=datetime.UTC)``.
+  * :meth:`~datetime.datetime.utcfromtimestamp`:
+    use ``datetime.datetime.fromtimestamp(timestamp, tz=datetime.UTC)``.
+
+* :mod:`gettext`: Plural value must be an integer.
+
+* :mod:`importlib`:
+
+  * ``load_module()`` method: use ``exec_module()`` instead.
+  * :func:`~importlib.util.cache_from_source` *debug_override* parameter is
+    deprecated: use the *optimization* parameter instead.
+
+* :mod:`importlib.metadata`:
+
+  * ``EntryPoints`` tuple interface.
+  * Implicit ``None`` on return values.
+
+* :mod:`mailbox`: Use of StringIO input and text mode is deprecated, use
+  BytesIO and binary mode instead.
+
+* :mod:`os`: Calling :func:`os.register_at_fork` in multi-threaded process.
+
+* :class:`!pydoc.ErrorDuringImport`: A tuple value for *exc_info* parameter is
+  deprecated, use an exception instance.
+
+* :mod:`re`: More strict rules are now applied for numerical group references
+  and group names in regular expressions.  Only sequence of ASCII digits is now
+  accepted as a numerical reference.  The group name in bytes patterns and
+  replacement strings can now only contain ASCII letters and digits and
+  underscore.
+  (Contributed by Serhiy Storchaka in :gh:`91760`.)
+
+* :mod:`ssl` options and protocols:
+
+  * :class:`ssl.SSLContext` without protocol argument is deprecated.
+  * :class:`ssl.SSLContext`: :meth:`~ssl.SSLContext.set_npn_protocols` and
+    :meth:`!~ssl.SSLContext.selected_npn_protocol` are deprecated: use ALPN
+    instead.
+  * ``ssl.OP_NO_SSL*`` options
+  * ``ssl.OP_NO_TLS*`` options
+  * ``ssl.PROTOCOL_SSLv3``
+  * ``ssl.PROTOCOL_TLS``
+  * ``ssl.PROTOCOL_TLSv1``
+  * ``ssl.PROTOCOL_TLSv1_1``
+  * ``ssl.PROTOCOL_TLSv1_2``
+  * ``ssl.TLSVersion.SSLv3``
+  * ``ssl.TLSVersion.TLSv1``
+  * ``ssl.TLSVersion.TLSv1_1``
+
+* :mod:`!sre_compile`, :mod:`!sre_constants` and :mod:`!sre_parse` modules.
+
+* :attr:`~codeobject.co_lnotab`: use the ``co_lines`` attribute instead.
+
+* :class:`typing.Text` (:gh:`92332`).
+
+* :func:`sysconfig.is_python_build` *check_home* parameter is deprecated and
+  ignored.
+
+* :mod:`threading` methods:
+
+  * :meth:`!threading.Condition.notifyAll`: use :meth:`~threading.Condition.notify_all`.
+  * :meth:`!threading.Event.isSet`: use :meth:`~threading.Event.is_set`.
+  * :meth:`!threading.Thread.isDaemon`, :meth:`threading.Thread.setDaemon`:
+    use :attr:`threading.Thread.daemon` attribute.
+  * :meth:`!threading.Thread.getName`, :meth:`threading.Thread.setName`:
+    use :attr:`threading.Thread.name` attribute.
+  * :meth:`!threading.currentThread`: use :meth:`threading.current_thread`.
+  * :meth:`!threading.activeCount`: use :meth:`threading.active_count`.
+
+* :class:`unittest.IsolatedAsyncioTestCase`: it is deprecated to return a value
+  that is not None from a test case.
+
+* :mod:`urllib.request`: :class:`~urllib.request.URLopener` and
+  :class:`~urllib.request.FancyURLopener` style of invoking requests is
+  deprecated. Use newer :func:`~urllib.request.urlopen` functions and methods.
+
+* :func:`!urllib.parse.to_bytes`.
+
+* :mod:`urllib.parse` deprecated functions: :func:`~urllib.parse.urlparse` instead
+
+  * ``splitattr()``
+  * ``splithost()``
+  * ``splitnport()``
+  * ``splitpasswd()``
+  * ``splitport()``
+  * ``splitquery()``
+  * ``splittag()``
+  * ``splittype()``
+  * ``splituser()``
+  * ``splitvalue()``
+
+* :mod:`wsgiref`: ``SimpleHandler.stdout.write()`` should not do partial
+  writes.
+
+* :meth:`zipimport.zipimporter.load_module` is deprecated:
+  use :meth:`~zipimport.zipimporter.exec_module` instead.
+
+
+Removed
+=======
+
+.. _whatsnew313-pep594:
+
+PEP 594: dead batteries
+-----------------------
+
+* :pep:`594` removed 19 modules from the standard library,
+  deprecated in Python 3.11:
+
+  * :mod:`!aifc`.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!audioop`.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!chunk`.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!cgi` and :mod:`!cgitb`.
+
+    * ``cgi.FieldStorage`` can typically be replaced with
+      :func:`urllib.parse.parse_qsl` for ``GET`` and ``HEAD`` requests,
+      and the :mod:`email.message` module or `multipart
+      <https://pypi.org/project/multipart/>`__ PyPI project for ``POST`` and
+      ``PUT``.
+
+    * ``cgi.parse()`` can be replaced by calling :func:`urllib.parse.parse_qs`
+      directly on the desired query string, except for ``multipart/form-data``
+      input, which can be handled as described for ``cgi.parse_multipart()``.
+
+    * ``cgi.parse_header()`` can be replaced with the functionality in the
+      :mod:`email` package, which implements the same MIME RFCs. For example,
+      with :class:`email.message.EmailMessage`::
+
+          from email.message import EmailMessage
+          msg = EmailMessage()
+          msg['content-type'] = 'application/json; charset="utf8"'
+          main, params = msg.get_content_type(), msg['content-type'].params
+
+    * ``cgi.parse_multipart()`` can be replaced with the functionality in the
+      :mod:`email` package (e.g. :class:`email.message.EmailMessage` and
+      :class:`email.message.Message`) which implements the same MIME RFCs, or
+      with the `multipart <https://pypi.org/project/multipart/>`__ PyPI project.
+
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!crypt` module and its private :mod:`!_crypt` extension.
+    The :mod:`hashlib` module is a potential replacement for certain use cases.
+    Otherwise, the following PyPI projects can be used:
+
+    * `bcrypt <https://pypi.org/project/bcrypt/>`_:
+      Modern password hashing for your software and your servers.
+    * `passlib <https://pypi.org/project/passlib/>`_:
+      Comprehensive password hashing framework supporting over 30 schemes.
+    * `argon2-cffi <https://pypi.org/project/argon2-cffi/>`_:
+      The secure Argon2 password hashing algorithm.
+    * `legacycrypt <https://pypi.org/project/legacycrypt/>`_:
+      Wrapper to the POSIX crypt library call and associated functionality.
+
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!imghdr`: use the projects
+    `filetype <https://pypi.org/project/filetype/>`_,
+    `puremagic <https://pypi.org/project/puremagic/>`_,
+    or `python-magic <https://pypi.org/project/python-magic/>`_ instead.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!mailcap`.
+    The :mod:`mimetypes` module provides an alternative.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!msilib`.
+    (Contributed by Zachary Ware in :gh:`104773`.)
+
+  * :mod:`!nis`.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!nntplib`:
+    the `PyPI nntplib project <https://pypi.org/project/nntplib/>`_
+    can be used instead.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!ossaudiodev`: use the
+    `pygame project <https://www.pygame.org/>`_ for audio playback.
+    (Contributed by Victor Stinner in :gh:`104780`.)
+
+  * :mod:`!pipes`: use the :mod:`subprocess` module instead.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!sndhdr`: use the projects
+    `filetype <https://pypi.org/project/filetype/>`_,
+    `puremagic <https://pypi.org/project/puremagic/>`_, or
+    `python-magic <https://pypi.org/project/python-magic/>`_ instead.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!spwd`:
+    the `python-pam project <https://pypi.org/project/python-pam/>`_
+    can be used instead.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!sunau`.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!telnetlib`, use the projects
+    `telnetlib3 <https://pypi.org/project/telnetlib3/>`_ or
+    `Exscript <https://pypi.org/project/Exscript/>`_ instead.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!uu`: the :mod:`base64` module is a modern alternative.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+  * :mod:`!xdrlib`.
+    (Contributed by Victor Stinner in :gh:`104773`.)
+
+2to3
+----
+
+* Remove the ``2to3`` program and the :mod:`!lib2to3` module,
+  deprecated in Python 3.11.
+  (Contributed by Victor Stinner in :gh:`104780`.)
+
+configparser
+------------
+
+* Remove the undocumented :class:`!configparser.LegacyInterpolation` class,
+  deprecated in the docstring since Python 3.2,
+  and with a deprecation warning since Python 3.11.
+  (Contributed by Hugo van Kemenade in :gh:`104886`.)
+
+importlib
+---------
+
+* Remove :mod:`importlib.resources` deprecated methods:
+
+  * ``contents()``
+  * ``is_resource()``
+  * ``open_binary()``
+  * ``open_text()``
+  * ``path()``
+  * ``read_binary()``
+  * ``read_text()``
+
+  Use :func:`importlib.resources.files()` instead.  Refer to `importlib-resources: Migrating from Legacy
+  <https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy>`_
+  for migration advice.
+  (Contributed by Jason R. Coombs in :gh:`106532`.)
+
+locale
+------
+
+* Remove ``locale.resetlocale()`` function deprecated in Python 3.11:
+  use ``locale.setlocale(locale.LC_ALL, "")`` instead.
+  (Contributed by Victor Stinner in :gh:`104783`.)
+
+logging
+-------
+
+* :mod:`logging`: Remove undocumented and untested ``Logger.warn()`` and
+  ``LoggerAdapter.warn()`` methods and ``logging.warn()`` function. Deprecated
+  since Python 3.3, they were aliases to the :meth:`logging.Logger.warning`
+  method, :meth:`!logging.LoggerAdapter.warning` method and
+  :func:`logging.warning` function.
+  (Contributed by Victor Stinner in :gh:`105376`.)
+
+pathlib
+-------
+
+* Remove support for using :class:`pathlib.Path` objects as context managers.
+  This functionality was deprecated and made a no-op in Python 3.9.
+
+re
+--
+
+* Remove undocumented, never working, and deprecated ``re.template`` function
+  and ``re.TEMPLATE`` flag (and ``re.T`` alias).
+  (Contributed by Serhiy Storchaka and Nikita Sobolev in :gh:`105687`.)
+
+tkinter
+-------
+
+* Remove the :mod:`!tkinter.tix` module, deprecated in Python 3.6.  The
+  third-party Tix library which the module wrapped is unmaintained.
+  (Contributed by Zachary Ware in :gh:`75552`.)
+
+turtle
+------
+
+* Remove the :meth:`!turtle.RawTurtle.settiltangle` method,
+  deprecated in docs since Python 3.1
+  and with a deprecation warning since Python 3.11.
+  (Contributed by Hugo van Kemenade in :gh:`104876`.)
+
+typing
+------
+
+* Namespaces ``typing.io`` and ``typing.re``, deprecated in Python 3.8,
+  are now removed. The items in those namespaces can be imported directly
+  from :mod:`typing`. (Contributed by Sebastian Rittau in :gh:`92871`.)
+
+* Remove support for the keyword-argument method of creating
+  :class:`typing.TypedDict` types, deprecated in Python 3.11.
+  (Contributed by Tomas Roun in :gh:`104786`.)
+
+unittest
+--------
+
+* Removed the following :mod:`unittest` functions, deprecated in Python 3.11:
+
+  * :func:`!unittest.findTestCases`
+  * :func:`!unittest.makeSuite`
+  * :func:`!unittest.getTestCaseNames`
+
+  Use :class:`~unittest.TestLoader` methods instead:
+
+  * :meth:`unittest.TestLoader.loadTestsFromModule`
+  * :meth:`unittest.TestLoader.loadTestsFromTestCase`
+  * :meth:`unittest.TestLoader.getTestCaseNames`
+
+  (Contributed by Hugo van Kemenade in :gh:`104835`.)
+
+* Remove the untested and undocumented :meth:`!unittest.TestProgram.usageExit`
+  method, deprecated in Python 3.11.
+  (Contributed by Hugo van Kemenade in :gh:`104992`.)
+
+urllib
+------
+
+* Remove *cafile*, *capath* and *cadefault* parameters of the
+  :func:`urllib.request.urlopen` function, deprecated in Python 3.6: use the
+  *context* parameter instead. Please use
+  :meth:`ssl.SSLContext.load_cert_chain` instead, or let
+  :func:`ssl.create_default_context` select the system's trusted CA
+  certificates for you.
+  (Contributed by Victor Stinner in :gh:`105382`.)
+
+webbrowser
+----------
+
+* Remove the untested and undocumented :mod:`webbrowser` :class:`!MacOSX` class,
+  deprecated in Python 3.11.
+  Use the :class:`!MacOSXOSAScript` class (introduced in Python 3.2) instead.
+  (Contributed by Hugo van Kemenade in :gh:`104804`.)
+
+* Remove deprecated ``webbrowser.MacOSXOSAScript._name`` attribute.
+  Use :attr:`webbrowser.MacOSXOSAScript.name <webbrowser.controller.name>`
+  attribute instead.
+  (Contributed by Nikita Sobolev in :gh:`105546`.)
+
+Others
+------
+
+* None yet
+
+CPython bytecode changes
+========================
+
+* The oparg of ``YIELD_VALUE`` is now ``1`` if the yield is part of a
+  yield-from or await, and ``0`` otherwise. The oparg of ``RESUME`` was
+  changed to add a bit indicating whether the except-depth is 1, which
+  is needed to optimize closing of generators.
+  (Contributed by Irit Katriel in :gh:`111354`.)
+
+Porting to Python 3.13
+======================
+
+This section lists previously described changes and other bugfixes
+that may require changes to your code.
+
+Changes in the Python API
+-------------------------
+
+* :meth:`!tkinter.Text.count` now always returns an integer if one or less
+  counting options are specified.
+  Previously it could return a single count as a 1-tuple, an integer (only if
+  option ``"update"`` was specified) or ``None`` if no items found.
+  The result is now the same if ``wantobjects`` is set to ``0``.
+  (Contributed by Serhiy Storchaka in :gh:`97928`.)
+
+* Functions :c:func:`PyDict_GetItem`, :c:func:`PyDict_GetItemString`,
+  :c:func:`PyMapping_HasKey`, :c:func:`PyMapping_HasKeyString`,
+  :c:func:`PyObject_HasAttr`, :c:func:`PyObject_HasAttrString`, and
+  :c:func:`PySys_GetObject`, which clear all errors occurred during calling
+  the function, report now them using :func:`sys.unraisablehook`.
+  You can consider to replace these functions with other functions as
+  recomended in the documentation.
+  (Contributed by Serhiy Storchaka in :gh:`106672`.)
+
+* An :exc:`OSError` is now raised by :func:`getpass.getuser` for any failure to
+  retrieve a username, instead of :exc:`ImportError` on non-Unix platforms or
+  :exc:`KeyError` on Unix platforms where the password database is empty.
+
+* The :mod:`threading` module now expects the :mod:`!_thread` module to have
+  an ``_is_main_interpreter`` attribute.  It is a function with no
+  arguments that returns ``True`` if the current interpreter is the
+  main interpreter.
+
+  Any library or application that provides a custom ``_thread`` module
+  must provide ``_is_main_interpreter()``, just like the module's
+  other "private" attributes.
+  (See :gh:`112826`.)
+
+
+Build Changes
+=============
+
+* Autoconf 2.71 and aclocal 1.16.4 is now required to regenerate
+  the :file:`configure` script.
+  (Contributed by Christian Heimes in :gh:`89886`.)
+
+* SQLite 3.15.2 or newer is required to build the :mod:`sqlite3` extension module.
+  (Contributed by Erlend Aasland in :gh:`105875`.)
+
+* Python built with :file:`configure` :option:`--with-trace-refs` (tracing
+  references) is now ABI compatible with Python release build and
+  :ref:`debug build <debug-build>`.
+  (Contributed by Victor Stinner in :gh:`108634`.)
+
+* Building CPython now requires a compiler with support for the C11 atomic
+  library, GCC built-in atomic functions, or MSVC interlocked intrinsics.
+
+* The ``errno``, ``md5``, ``resource``, ``winsound``, ``_ctypes_test``,
+  ``_multiprocessing.posixshmem``, ``_scproxy``, ``_stat``,
+  ``_testimportmultiple`` and ``_uuid`` C extensions are now built with the
+  :ref:`limited C API <limited-c-api>`.
+  (Contributed by Victor Stinner in :gh:`85283`.)
+
+
+C API Changes
+=============
+
+New Features
+------------
+
+* You no longer have to define the ``PY_SSIZE_T_CLEAN`` macro before including
+  :file:`Python.h` when using ``#`` formats in
+  :ref:`format codes <arg-parsing-string-and-buffers>`.
+  APIs accepting the format codes always use ``Py_ssize_t`` for ``#`` formats.
+  (Contributed by Inada Naoki in :gh:`104922`.)
+
+* The *keywords* parameter of :c:func:`PyArg_ParseTupleAndKeywords` and
+  :c:func:`PyArg_VaParseTupleAndKeywords` has now type :c:expr:`char * const *`
+  in C and :c:expr:`const char * const *` in C++, instead of :c:expr:`char **`.
+  It makes these functions compatible with arguments of type
+  :c:expr:`const char * const *`, :c:expr:`const char **` or
+  :c:expr:`char * const *` in C++ and :c:expr:`char * const *` in C
+  without an explicit type cast.
+  This can be overridden with the :c:macro:`PY_CXX_CONST` macro.
+  (Contributed by Serhiy Storchaka in :gh:`65210`.)
+
+* Add :c:func:`PyImport_AddModuleRef`: similar to
+  :c:func:`PyImport_AddModule`, but return a :term:`strong reference` instead
+  of a :term:`borrowed reference`.
+  (Contributed by Victor Stinner in :gh:`105922`.)
+
+* Add :c:func:`PyWeakref_GetRef` function: similar to
+  :c:func:`PyWeakref_GetObject` but returns a :term:`strong reference`, or
+  ``NULL`` if the referent is no longer live.
+  (Contributed by Victor Stinner in :gh:`105927`.)
+
+* Add :c:func:`PyObject_GetOptionalAttr` and
+  :c:func:`PyObject_GetOptionalAttrString`, variants of
+  :c:func:`PyObject_GetAttr` and :c:func:`PyObject_GetAttrString` which
+  don't raise :exc:`AttributeError` if the attribute is not found.
+  These variants are more convenient and faster if the missing attribute
+  should not be treated as a failure.
+  (Contributed by Serhiy Storchaka in :gh:`106521`.)
+
+* Add :c:func:`PyMapping_GetOptionalItem` and
+  :c:func:`PyMapping_GetOptionalItemString`: variants of
+  :c:func:`PyObject_GetItem` and :c:func:`PyMapping_GetItemString` which don't
+  raise :exc:`KeyError` if the key is not found.
+  These variants are more convenient and faster if the missing key should not
+  be treated as a failure.
+  (Contributed by Serhiy Storchaka in :gh:`106307`.)
+
+* Add fixed variants of functions which silently ignore errors:
+
+  - :c:func:`PyObject_HasAttrWithError` replaces :c:func:`PyObject_HasAttr`.
+  - :c:func:`PyObject_HasAttrStringWithError` replaces :c:func:`PyObject_HasAttrString`.
+  - :c:func:`PyMapping_HasKeyWithError` replaces :c:func:`PyMapping_HasKey`.
+  - :c:func:`PyMapping_HasKeyStringWithError` replaces :c:func:`PyMapping_HasKeyString`.
+
+  New functions return not only ``1`` for true and ``0`` for false, but also
+  ``-1`` for error.
+
+  (Contributed by Serhiy Storchaka in :gh:`108511`.)
+
+* If Python is built in :ref:`debug mode <debug-build>` or :option:`with
+  assertions <--with-assertions>`, :c:func:`PyTuple_SET_ITEM` and
+  :c:func:`PyList_SET_ITEM` now check the index argument with an assertion.
+  (Contributed by Victor Stinner in :gh:`106168`.)
+
+* Add :c:func:`PyModule_Add` function: similar to
+  :c:func:`PyModule_AddObjectRef` and :c:func:`PyModule_AddObject` but
+  always steals a reference to the value.
+  (Contributed by Serhiy Storchaka in :gh:`86493`.)
+
+* Added :c:func:`PyDict_GetItemRef` and :c:func:`PyDict_GetItemStringRef`
+  functions: similar to :c:func:`PyDict_GetItemWithError` but returning a
+  :term:`strong reference` instead of a :term:`borrowed reference`. Moreover,
+  these functions return -1 on error and so checking ``PyErr_Occurred()`` is
+  not needed.
+  (Contributed by Victor Stinner in :gh:`106004`.)
+
+* Added :c:func:`PyDict_ContainsString` function: same as
+  :c:func:`PyDict_Contains`, but *key* is specified as a :c:expr:`const char*`
+  UTF-8 encoded bytes string, rather than a :c:expr:`PyObject*`.
+  (Contributed by Victor Stinner in :gh:`108314`.)
+
+* Add :c:func:`Py_IsFinalizing` function: check if the main Python interpreter is
+  :term:`shutting down <interpreter shutdown>`.
+  (Contributed by Victor Stinner in :gh:`108014`.)
+
+* Add :c:func:`PyLong_AsInt` function: similar to :c:func:`PyLong_AsLong`, but
+  store the result in a C :c:expr:`int` instead of a C :c:expr:`long`.
+  Previously, it was known as the private function :c:func:`!_PyLong_AsInt`
+  (with an underscore prefix).
+  (Contributed by Victor Stinner in :gh:`108014`.)
+
+* Python built with :file:`configure` :option:`--with-trace-refs` (tracing
+  references) now supports the :ref:`Limited API <limited-c-api>`.
+  (Contributed by Victor Stinner in :gh:`108634`.)
+
+* Add :c:func:`PyObject_VisitManagedDict` and
+  :c:func:`PyObject_ClearManagedDict` functions which must be called by the
+  traverse and clear functions of a type using
+  :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag.  The `pythoncapi-compat project
+  <https://github.com/python/pythoncapi-compat/>`__ can be used to get these
+  functions on Python 3.11 and 3.12.
+  (Contributed by Victor Stinner in :gh:`107073`.)
+
+* Add :c:func:`PyUnicode_EqualToUTF8AndSize` and :c:func:`PyUnicode_EqualToUTF8`
+  functions: compare Unicode object with a :c:expr:`const char*` UTF-8 encoded
+  string and return true (``1``) if they are equal, or false (``0``) otherwise.
+  These functions do not raise exceptions.
+  (Contributed by Serhiy Storchaka in :gh:`110289`.)
+
+* Add :c:func:`PyThreadState_GetUnchecked()` function: similar to
+  :c:func:`PyThreadState_Get()`, but don't kill the process with a fatal error
+  if it is NULL. The caller is responsible to check if the result is NULL.
+  Previously, the function was private and known as
+  ``_PyThreadState_UncheckedGet()``.
+  (Contributed by Victor Stinner in :gh:`108867`.)
+
+* Add :c:func:`PySys_AuditTuple` function: similar to :c:func:`PySys_Audit`,
+  but pass event arguments as a Python :class:`tuple` object.
+  (Contributed by Victor Stinner in :gh:`85283`.)
+
+* :c:func:`PyArg_ParseTupleAndKeywords` now supports non-ASCII keyword
+  parameter names.
+  (Contributed by Serhiy Storchaka in :gh:`110815`.)
+
+* Add :c:func:`PyMem_RawMalloc`, :c:func:`PyMem_RawCalloc`,
+  :c:func:`PyMem_RawRealloc` and :c:func:`PyMem_RawFree` to the limited C API
+  (version 3.13).
+  (Contributed by Victor Stinner in :gh:`85283`.)
+
+* Add :c:func:`PySys_Audit` and :c:func:`PySys_AuditTuple` functions to the
+  limited C API.
+  (Contributed by Victor Stinner in :gh:`85283`.)
+
+* Add :c:func:`PyErr_FormatUnraisable` function: similar to
+  :c:func:`PyErr_WriteUnraisable`, but allow to customize the warning mesage.
+  (Contributed by Serhiy Storchaka in :gh:`108082`.)
+
+* Add :c:func:`PyList_Extend` and :c:func:`PyList_Clear` functions: similar to
+  Python ``list.extend()`` and ``list.clear()`` methods.
+  (Contributed by Victor Stinner in :gh:`111138`.)
+
+* Add :c:func:`PyDict_Pop` and :c:func:`PyDict_PopString` functions: remove a
+  key from a dictionary and optionally return the removed value. This is
+  similar to :meth:`dict.pop`, but without the default value and not raising
+  :exc:`KeyError` if the key missing.
+  (Contributed by Stefan Behnel and Victor Stinner in :gh:`111262`.)
+
+* Add :c:func:`Py_HashPointer` function to hash a pointer.
+  (Contributed by Victor Stinner in :gh:`111545`.)
+
+
+Porting to Python 3.13
+----------------------
+
+* ``Python.h`` no longer includes the ``<ieeefp.h>`` standard header. It was
+  included for the ``finite()`` function which is now provided by the
+  ``<math.h>`` header. It should now be included explicitly if needed. Remove
+  also the ``HAVE_IEEEFP_H`` macro.
+  (Contributed by Victor Stinner in :gh:`108765`.)
+
+* ``Python.h`` no longer includes these standard header files: ``<time.h>``,
+  ``<sys/select.h>`` and ``<sys/time.h>``. If needed, they should now be
+  included explicitly. For example, ``<time.h>`` provides the ``clock()`` and
+  ``gmtime()`` functions, ``<sys/select.h>`` provides the ``select()``
+  function, and ``<sys/time.h>`` provides the ``futimes()``, ``gettimeofday()``
+  and ``setitimer()`` functions.
+  (Contributed by Victor Stinner in :gh:`108765`.)
+
+* If the :c:macro:`Py_LIMITED_API` macro is defined, :c:macro:`!Py_BUILD_CORE`,
+  :c:macro:`!Py_BUILD_CORE_BUILTIN` and :c:macro:`!Py_BUILD_CORE_MODULE` macros
+  are now undefined by ``<Python.h>``.
+  (Contributed by Victor Stinner in :gh:`85283`.)
+
+* The old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and ``Py_TRASHCAN_SAFE_END``
+  were removed. They should be replaced by the new macros ``Py_TRASHCAN_BEGIN``
+  and ``Py_TRASHCAN_END``.
+
+  A tp_dealloc function that has the old macros, such as::
+
+    static void
+    mytype_dealloc(mytype *p)
+    {
+        PyObject_GC_UnTrack(p);
+        Py_TRASHCAN_SAFE_BEGIN(p);
+        ...
+        Py_TRASHCAN_SAFE_END
+    }
+
+  should migrate to the new macros as follows::
+
+    static void
+    mytype_dealloc(mytype *p)
+    {
+        PyObject_GC_UnTrack(p);
+        Py_TRASHCAN_BEGIN(p, mytype_dealloc)
+        ...
+        Py_TRASHCAN_END
+    }
+
+  Note that ``Py_TRASHCAN_BEGIN`` has a second argument which
+  should be the deallocation function it is in.
+
+* On Windows, ``Python.h`` no longer includes the ``<stddef.h>`` standard
+  header file. If needed, it should now be included explicitly. For example, it
+  provides ``offsetof()`` function, and ``size_t`` and ``ptrdiff_t`` types.
+  Including ``<stddef.h>`` explicitly was already needed by all other
+  platforms, the ``HAVE_STDDEF_H`` macro is only defined on Windows.
+  (Contributed by Victor Stinner in :gh:`108765`.)
+
+
+Deprecated
+----------
+
+* Passing optional arguments *maxsplit*, *count* and *flags* in module-level
+  functions :func:`re.split`, :func:`re.sub` and :func:`re.subn` as positional
+  arguments is now deprecated.
+  In future Python versions these parameters will be
+  :ref:`keyword-only <keyword-only_parameter>`.
+  (Contributed by Serhiy Storchaka in :gh:`56166`.)
+
+* Deprecate the old ``Py_UNICODE`` and ``PY_UNICODE_TYPE`` types: use directly
+  the :c:type:`wchar_t` type instead. Since Python 3.3, ``Py_UNICODE`` and
+  ``PY_UNICODE_TYPE`` are just aliases to :c:type:`wchar_t`.
+  (Contributed by Victor Stinner in :gh:`105156`.)
+
+* Deprecate old Python initialization functions:
+
+  * :c:func:`PySys_ResetWarnOptions`:
+    clear :data:`sys.warnoptions` and :data:`!warnings.filters` instead.
+  * :c:func:`Py_GetExecPrefix`: get :data:`sys.exec_prefix` instead.
+  * :c:func:`Py_GetPath`: get :data:`sys.path` instead.
+  * :c:func:`Py_GetPrefix`: get :data:`sys.prefix` instead.
+  * :c:func:`Py_GetProgramFullPath`: get :data:`sys.executable` instead.
+  * :c:func:`Py_GetProgramName`: get :data:`sys.executable` instead.
+  * :c:func:`Py_GetPythonHome`: get :c:member:`PyConfig.home` or
+    :envvar:`PYTHONHOME` environment variable instead.
+
+  Functions scheduled for removal in Python 3.15.
+  (Contributed by Victor Stinner in :gh:`105145`.)
+
+* Deprecate the :c:func:`PyImport_ImportModuleNoBlock` function which is just
+  an alias to :c:func:`PyImport_ImportModule` since Python 3.3.
+  Scheduled for removal in Python 3.15.
+  (Contributed by Victor Stinner in :gh:`105396`.)
+
+* Deprecate the :c:func:`PyWeakref_GetObject` and
+  :c:func:`PyWeakref_GET_OBJECT` functions, which return a :term:`borrowed
+  reference`: use the new :c:func:`PyWeakref_GetRef` function instead, it
+  returns a :term:`strong reference`. The `pythoncapi-compat project
+  <https://github.com/python/pythoncapi-compat/>`__ can be used to get
+  :c:func:`PyWeakref_GetRef` on Python 3.12 and older.
+  (Contributed by Victor Stinner in :gh:`105927`.)
+
+Removed
+-------
+
+* Removed chained :class:`classmethod` descriptors (introduced in
+  :issue:`19072`).  This can no longer be used to wrap other descriptors
+  such as :class:`property`.  The core design of this feature was flawed
+  and caused a number of downstream problems.  To "pass-through" a
+  :class:`classmethod`, consider using the :attr:`!__wrapped__`
+  attribute that was added in Python 3.10.  (Contributed by Raymond
+  Hettinger in :gh:`89519`.)
+
+* Remove many APIs (functions, macros, variables) with names prefixed by
+  ``_Py`` or ``_PY`` (considered as private API). If your project is affected
+  by one of these removals and you consider that the removed API should remain
+  available, please open a new issue to request a public C API and
+  add ``cc @vstinner`` to the issue to notify Victor Stinner.
+  (Contributed by Victor Stinner in :gh:`106320`.)
+
+* Remove functions deprecated in Python 3.9.
+
+  * ``PyEval_CallObject()``, ``PyEval_CallObjectWithKeywords()``: use
+    :c:func:`PyObject_CallNoArgs` or :c:func:`PyObject_Call` instead.
+    Warning: :c:func:`PyObject_Call` positional arguments must be a
+    :class:`tuple` and must not be *NULL*, keyword arguments must be a
+    :class:`dict` or *NULL*, whereas removed functions checked arguments type
+    and accepted *NULL* positional and keyword arguments.
+    To replace ``PyEval_CallObjectWithKeywords(func, NULL, kwargs)`` with
+    :c:func:`PyObject_Call`, pass an empty tuple as positional arguments using
+    :c:func:`PyTuple_New(0) <PyTuple_New>`.
+  * ``PyEval_CallFunction()``: use :c:func:`PyObject_CallFunction` instead.
+  * ``PyEval_CallMethod()``: use :c:func:`PyObject_CallMethod` instead.
+  * ``PyCFunction_Call()``: use :c:func:`PyObject_Call` instead.
+
+  (Contributed by Victor Stinner in :gh:`105107`.)
+
+* Remove old buffer protocols deprecated in Python 3.0. Use :ref:`bufferobjects` instead.
+
+  * :c:func:`!PyObject_CheckReadBuffer`: Use :c:func:`PyObject_CheckBuffer` to
+    test if the object supports the buffer protocol.
+    Note that :c:func:`PyObject_CheckBuffer` doesn't guarantee that
+    :c:func:`PyObject_GetBuffer` will succeed.
+    To test if the object is actually readable, see the next example
+    of :c:func:`PyObject_GetBuffer`.
+
+  * :c:func:`!PyObject_AsCharBuffer`, :c:func:`!PyObject_AsReadBuffer`:
+    :c:func:`PyObject_GetBuffer` and :c:func:`PyBuffer_Release` instead:
+
+    .. code-block:: c
+
+       Py_buffer view;
+       if (PyObject_GetBuffer(obj, &view, PyBUF_SIMPLE) < 0) {
+           return NULL;
+       }
+       // Use `view.buf` and `view.len` to read from the buffer.
+       // You may need to cast buf as `(const char*)view.buf`.
+       PyBuffer_Release(&view);
+
+  * :c:func:`!PyObject_AsWriteBuffer`: Use
+    :c:func:`PyObject_GetBuffer` and :c:func:`PyBuffer_Release` instead:
+
+    .. code-block:: c
+
+       Py_buffer view;
+       if (PyObject_GetBuffer(obj, &view, PyBUF_WRITABLE) < 0) {
+           return NULL;
+       }
+       // Use `view.buf` and `view.len` to write to the buffer.
+       PyBuffer_Release(&view);
+
+  (Contributed by Inada Naoki in :gh:`85275`.)
+
+* Remove the following old functions to configure the Python initialization,
+  deprecated in Python 3.11:
+
+  * ``PySys_AddWarnOptionUnicode()``: use :c:member:`PyConfig.warnoptions` instead.
+  * ``PySys_AddWarnOption()``: use :c:member:`PyConfig.warnoptions` instead.
+  * ``PySys_AddXOption()``: use :c:member:`PyConfig.xoptions` instead.
+  * ``PySys_HasWarnOptions()``: use :c:member:`PyConfig.xoptions` instead.
+  * ``PySys_SetArgvEx()``: set :c:member:`PyConfig.argv` instead.
+  * ``PySys_SetArgv()``: set :c:member:`PyConfig.argv` instead.
+  * ``PySys_SetPath()``: set :c:member:`PyConfig.module_search_paths` instead.
+  * ``Py_SetPath()``: set :c:member:`PyConfig.module_search_paths` instead.
+  * ``Py_SetProgramName()``: set :c:member:`PyConfig.program_name` instead.
+  * ``Py_SetPythonHome()``: set :c:member:`PyConfig.home` instead.
+  * ``Py_SetStandardStreamEncoding()``: set :c:member:`PyConfig.stdio_encoding`
+    instead, and set also maybe :c:member:`PyConfig.legacy_windows_stdio` (on
+    Windows).
+  * ``_Py_SetProgramFullPath()``: set :c:member:`PyConfig.executable` instead.
+
+  Use the new :c:type:`PyConfig` API of the :ref:`Python Initialization
+  Configuration <init-config>` instead (:pep:`587`), added to Python 3.8.
+  (Contributed by Victor Stinner in :gh:`105145`.)
+
+* Remove the old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and
+  ``Py_TRASHCAN_SAFE_END``.  They should be replaced by the new macros
+  ``Py_TRASHCAN_BEGIN`` and ``Py_TRASHCAN_END``.  The new macros were
+  added in Python 3.8 and the old macros were deprecated in Python 3.11.
+  (Contributed by Irit Katriel in :gh:`105111`.)
+
+* Remove ``PyEval_InitThreads()`` and ``PyEval_ThreadsInitialized()``
+  functions, deprecated in Python 3.9. Since Python 3.7, ``Py_Initialize()``
+  always creates the GIL: calling ``PyEval_InitThreads()`` did nothing and
+  ``PyEval_ThreadsInitialized()`` always returned non-zero.
+  (Contributed by Victor Stinner in :gh:`105182`.)
+
+* Remove ``PyEval_AcquireLock()`` and ``PyEval_ReleaseLock()`` functions,
+  deprecated in Python 3.2. They didn't update the current thread state.
+  They can be replaced with:
+
+  * :c:func:`PyEval_SaveThread` and :c:func:`PyEval_RestoreThread`;
+  * low-level :c:func:`PyEval_AcquireThread` and :c:func:`PyEval_RestoreThread`;
+  * or :c:func:`PyGILState_Ensure` and :c:func:`PyGILState_Release`.
+
+  (Contributed by Victor Stinner in :gh:`105182`.)
+
+* Remove private ``_PyObject_FastCall()`` function:
+  use ``PyObject_Vectorcall()`` which is available since Python 3.8
+  (:pep:`590`).
+  (Contributed by Victor Stinner in :gh:`106023`.)
+
+* Remove ``cpython/pytime.h`` header file: it only contained private functions.
+  (Contributed by Victor Stinner in :gh:`106316`.)
+
+* Remove ``_PyInterpreterState_Get()`` alias to
+  :c:func:`PyInterpreterState_Get()` which was kept for backward compatibility
+  with Python 3.8. The `pythoncapi-compat project
+  <https://github.com/python/pythoncapi-compat/>`__ can be used to get
+  :c:func:`PyInterpreterState_Get()` on Python 3.8 and older.
+  (Contributed by Victor Stinner in :gh:`106320`.)
+
+* The :c:func:`PyModule_AddObject` function is now :term:`soft deprecated`:
+  :c:func:`PyModule_Add` or :c:func:`PyModule_AddObjectRef` functions should
+  be used instead.
+  (Contributed by Serhiy Storchaka in :gh:`86493`.)
+
+Pending Removal in Python 3.14
+------------------------------
+
+* Creating immutable types (:c:macro:`Py_TPFLAGS_IMMUTABLETYPE`) with mutable
+  bases using the C API.
+* Global configuration variables:
+
+  * :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
+  * :c:var:`Py_VerboseFlag`: use :c:member:`PyConfig.verbose`
+  * :c:var:`Py_QuietFlag`: use :c:member:`PyConfig.quiet`
+  * :c:var:`Py_InteractiveFlag`: use :c:member:`PyConfig.interactive`
+  * :c:var:`Py_InspectFlag`: use :c:member:`PyConfig.inspect`
+  * :c:var:`Py_OptimizeFlag`: use :c:member:`PyConfig.optimization_level`
+  * :c:var:`Py_NoSiteFlag`: use :c:member:`PyConfig.site_import`
+  * :c:var:`Py_BytesWarningFlag`: use :c:member:`PyConfig.bytes_warning`
+  * :c:var:`Py_FrozenFlag`: use :c:member:`PyConfig.pathconfig_warnings`
+  * :c:var:`Py_IgnoreEnvironmentFlag`: use :c:member:`PyConfig.use_environment`
+  * :c:var:`Py_DontWriteBytecodeFlag`: use :c:member:`PyConfig.write_bytecode`
+  * :c:var:`Py_NoUserSiteDirectory`: use :c:member:`PyConfig.user_site_directory`
+  * :c:var:`Py_UnbufferedStdioFlag`: use :c:member:`PyConfig.buffered_stdio`
+  * :c:var:`Py_HashRandomizationFlag`: use :c:member:`PyConfig.use_hash_seed`
+    and :c:member:`PyConfig.hash_seed`
+  * :c:var:`Py_IsolatedFlag`: use :c:member:`PyConfig.isolated`
+  * :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyPreConfig.legacy_windows_fs_encoding`
+  * :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
+  * :c:var:`!Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
+  * :c:var:`!Py_HasFileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
+  * :c:var:`!Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
+  * :c:var:`!Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)
+
+  The :c:func:`Py_InitializeFromConfig` API should be used with
+  :c:type:`PyConfig` instead.
+
+Pending Removal in Python 3.15
+------------------------------
+
+* :c:func:`PyImport_ImportModuleNoBlock`: use :c:func:`PyImport_ImportModule`.
+* :c:func:`PyWeakref_GET_OBJECT`: use :c:func:`PyWeakref_GetRef` instead.
+* :c:func:`PyWeakref_GetObject`: use :c:func:`PyWeakref_GetRef` instead.
+* :c:type:`!Py_UNICODE_WIDE` type: use :c:type:`wchar_t` instead.
+* :c:type:`Py_UNICODE` type: use :c:type:`wchar_t` instead.
+* Python initialization functions:
+
+  * :c:func:`PySys_ResetWarnOptions`: clear :data:`sys.warnoptions` and
+    :data:`!warnings.filters` instead.
+  * :c:func:`Py_GetExecPrefix`: get :data:`sys.exec_prefix` instead.
+  * :c:func:`Py_GetPath`: get :data:`sys.path` instead.
+  * :c:func:`Py_GetPrefix`: get :data:`sys.prefix` instead.
+  * :c:func:`Py_GetProgramFullPath`: get :data:`sys.executable` instead.
+  * :c:func:`Py_GetProgramName`: get :data:`sys.executable` instead.
+  * :c:func:`Py_GetPythonHome`: get :c:member:`PyConfig.home` or
+    :envvar:`PYTHONHOME` environment variable instead.
+
+Pending Removal in Future Versions
+----------------------------------
+
+The following APIs were deprecated in earlier Python versions and will be
+removed, although there is currently no date scheduled for their removal.
+
+* :c:macro:`Py_TPFLAGS_HAVE_FINALIZE`: no needed since Python 3.8.
+* :c:func:`PyErr_Fetch`: use :c:func:`PyErr_GetRaisedException`.
+* :c:func:`PyErr_NormalizeException`: use :c:func:`PyErr_GetRaisedException`.
+* :c:func:`PyErr_Restore`: use :c:func:`PyErr_SetRaisedException`.
+* :c:func:`PyModule_GetFilename`: use :c:func:`PyModule_GetFilenameObject`.
+* :c:func:`PyOS_AfterFork`: use :c:func:`PyOS_AfterFork_Child()`.
+* :c:func:`PySlice_GetIndicesEx`.
+* :c:func:`!PyUnicode_AsDecodedObject`.
+* :c:func:`!PyUnicode_AsDecodedUnicode`.
+* :c:func:`!PyUnicode_AsEncodedObject`.
+* :c:func:`!PyUnicode_AsEncodedUnicode`.
+* :c:func:`PyUnicode_READY`: not needed since Python 3.12.
+* :c:func:`!_PyErr_ChainExceptions`.
+* :c:member:`!PyBytesObject.ob_shash` member:
+  call :c:func:`PyObject_Hash` instead.
+* :c:member:`!PyDictObject.ma_version_tag` member.
+* TLS API:
+
+  * :c:func:`PyThread_create_key`: use :c:func:`PyThread_tss_alloc`.
+  * :c:func:`PyThread_delete_key`: use :c:func:`PyThread_tss_free`.
+  * :c:func:`PyThread_set_key_value`: use :c:func:`PyThread_tss_set`.
+  * :c:func:`PyThread_get_key_value`: use :c:func:`PyThread_tss_get`.
+  * :c:func:`PyThread_delete_key_value`: use :c:func:`PyThread_tss_delete`.
+  * :c:func:`PyThread_ReInitTLS`: no longer needed.
+
+* Remove undocumented ``PY_TIMEOUT_MAX`` constant from the limited C API.
+  (Contributed by Victor Stinner in :gh:`110014`.)
+
+
+Regression Test Changes
+=======================
+
+* Python built with :file:`configure` :option:`--with-pydebug` now
+  supports a :option:`-X presite=package.module <-X>` command-line
+  option. If used, it specifies a module that should be imported early
+  in the lifecycle of the interpreter, before ``site.py`` is executed.
+  (Contributed by �ukasz Langa in :gh:`110769`.)
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index 7af0c0288376fd..df32b76b6d7b03 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -424,7 +424,7 @@ protocols, the users must to be able access the environment using native strings
 even though the underlying platform may have a different convention.  To bridge
 this gap, the :mod:`wsgiref` module has a new function,
 :func:`wsgiref.handlers.read_environ` for transcoding CGI variables from
-:attr:`os.environ` into native strings and returning a new dictionary.
+:data:`os.environ` into native strings and returning a new dictionary.
 
 .. seealso::
 
@@ -485,7 +485,7 @@ Some smaller changes made to the core Python language are:
 
 * The interpreter can now be started with a quiet option, ``-q``, to prevent
   the copyright and version information from being displayed in the interactive
-  mode.  The option can be introspected using the :attr:`sys.flags` attribute:
+  mode.  The option can be introspected using the :data:`sys.flags` attribute:
 
   .. code-block:: shell-session
 
@@ -566,9 +566,9 @@ Some smaller changes made to the core Python language are:
 
   (See :issue:`4617`.)
 
-* The internal :c:type:`structsequence` tool now creates subclasses of tuple.
+* :ref:`Struct sequence types <struct-sequence-objects>` are now subclasses of tuple.
   This means that C structures like those returned by :func:`os.stat`,
-  :func:`time.gmtime`, and :attr:`sys.version_info` now work like a
+  :func:`time.gmtime`, and :data:`sys.version_info` now work like a
   :term:`named tuple` and now work with functions and methods that
   expect a tuple as an argument.  This is a big step forward in making the C
   structures as flexible as their pure Python counterparts:
@@ -598,7 +598,7 @@ Some smaller changes made to the core Python language are:
   module, or on the command line.
 
   A :exc:`ResourceWarning` is issued at interpreter shutdown if the
-  :data:`gc.garbage` list isn't empty, and if :attr:`gc.DEBUG_UNCOLLECTABLE` is
+  :data:`gc.garbage` list isn't empty, and if :const:`gc.DEBUG_UNCOLLECTABLE` is
   set, all uncollectable objects are printed.  This is meant to make the
   programmer aware that their code contains object finalization issues.
 
@@ -623,7 +623,7 @@ Some smaller changes made to the core Python language are:
   :class:`collections.Sequence` :term:`abstract base class`.  As a result, the
   language will have a more uniform API.  In addition, :class:`range` objects
   now support slicing and negative indices, even with values larger than
-  :attr:`sys.maxsize`.  This makes *range* more interoperable with lists::
+  :data:`sys.maxsize`.  This makes *range* more interoperable with lists::
 
       >>> range(0, 100, 2).count(10)
       1
@@ -662,7 +662,7 @@ Python's standard library has undergone significant maintenance efforts and
 quality improvements.
 
 The biggest news for Python 3.2 is that the :mod:`email` package, :mod:`mailbox`
-module, and :mod:`nntplib` modules now work correctly with the bytes/text model
+module, and :mod:`!nntplib` modules now work correctly with the bytes/text model
 in Python 3.  For the first time, there is correct handling of messages with
 mixed encodings.
 
@@ -1007,13 +1007,13 @@ datetime and time
   after 1900.  The new supported year range is from 1000 to 9999 inclusive.
 
 * Whenever a two-digit year is used in a time tuple, the interpretation has been
-  governed by :attr:`time.accept2dyear`.  The default is ``True`` which means that
+  governed by :data:`time.accept2dyear`.  The default is ``True`` which means that
   for a two-digit year, the century is guessed according to the POSIX rules
   governing the ``%y`` strptime format.
 
   Starting with Py3.2, use of the century guessing heuristic will emit a
   :exc:`DeprecationWarning`.  Instead, it is recommended that
-  :attr:`time.accept2dyear` be set to ``False`` so that large date ranges
+  :data:`time.accept2dyear` be set to ``False`` so that large date ranges
   can be used without guesswork::
 
     >>> import time, warnings
@@ -1031,7 +1031,7 @@ datetime and time
     'Fri Jan  1 12:34:56 11'
 
   Several functions now have significantly expanded date ranges.  When
-  :attr:`time.accept2dyear` is false, the :func:`time.asctime` function will
+  :data:`time.accept2dyear` is false, the :func:`time.asctime` function will
   accept any year that fits in a C int, while the :func:`time.mktime` and
   :func:`time.strftime` functions will accept the full range supported by the
   corresponding operating system functions.
@@ -1194,11 +1194,11 @@ can be set to "$" for the shell-style formatting provided by
 
 If no configuration is set-up before a logging event occurs, there is now a
 default configuration using a :class:`~logging.StreamHandler` directed to
-:attr:`sys.stderr` for events of ``WARNING`` level or higher.  Formerly, an
+:data:`sys.stderr` for events of ``WARNING`` level or higher.  Formerly, an
 event occurring before a configuration was set-up would either raise an
 exception or silently drop the event depending on the value of
-:attr:`logging.raiseExceptions`.  The new default handler is stored in
-:attr:`logging.lastResort`.
+:data:`logging.raiseExceptions`.  The new default handler is stored in
+:data:`logging.lastResort`.
 
 The use of filters has been simplified.  Instead of creating a
 :class:`~logging.Filter` object, the predicate can be any Python callable that
@@ -1300,7 +1300,7 @@ values are equal (:issue:`8188`)::
           hash(Decimal("1.5")) == hash(complex(1.5, 0))
 
 Some of the hashing details are exposed through a new attribute,
-:attr:`sys.hash_info`, which describes the bit width of the hash value, the
+:data:`sys.hash_info`, which describes the bit width of the hash value, the
 prime modulus, the hash values for *infinity* and *nan*, and the multiplier
 used for the imaginary part of a number:
 
@@ -1388,7 +1388,7 @@ select
 ------
 
 The :mod:`select` module now exposes a new, constant attribute,
-:attr:`~select.PIPE_BUF`, which gives the minimum number of bytes which are
+:const:`~select.PIPE_BUF`, which gives the minimum number of bytes which are
 guaranteed not to block when :func:`select.select` says a pipe is ready
 for writing.
 
@@ -1529,7 +1529,7 @@ filenames:
 b'Sehensw\xc3\xbcrdigkeiten'
 
 Some operating systems allow direct access to encoded bytes in the
-environment.  If so, the :attr:`os.supports_bytes_environ` constant will be
+environment.  If so, the :const:`os.supports_bytes_environ` constant will be
 true.
 
 For direct access to encoded environment variables (if available),
@@ -1666,9 +1666,9 @@ for secure (encrypted, authenticated) internet connections:
   algorithm" error.
 
 * The version of OpenSSL being used is now accessible using the module
-  attributes :data:`ssl.OPENSSL_VERSION` (a string),
-  :data:`ssl.OPENSSL_VERSION_INFO` (a 5-tuple), and
-  :data:`ssl.OPENSSL_VERSION_NUMBER` (an integer).
+  attributes :const:`ssl.OPENSSL_VERSION` (a string),
+  :const:`ssl.OPENSSL_VERSION_INFO` (a 5-tuple), and
+  :const:`ssl.OPENSSL_VERSION_NUMBER` (an integer).
 
 (Contributed by Antoine Pitrou in :issue:`8850`, :issue:`1589`, :issue:`8322`,
 :issue:`5639`, :issue:`4870`, :issue:`8484`, and :issue:`8321`.)
@@ -1676,13 +1676,13 @@ for secure (encrypted, authenticated) internet connections:
 nntp
 ----
 
-The :mod:`nntplib` module has a revamped implementation with better bytes and
+The :mod:`!nntplib` module has a revamped implementation with better bytes and
 text semantics as well as more practical APIs.  These improvements break
 compatibility with the nntplib version in Python 3.1, which was partly
 dysfunctional in itself.
 
 Support for secure connections through both implicit (using
-:class:`nntplib.NNTP_SSL`) and explicit (using :meth:`nntplib.NNTP.starttls`)
+:class:`!nntplib.NNTP_SSL`) and explicit (using :meth:`!nntplib.NNTP.starttls`)
 TLS has also been added.
 
 (Contributed by Antoine Pitrou in :issue:`9360` and Andrew Vant in :issue:`1926`.)
@@ -2302,7 +2302,7 @@ turtledemo
 
 The demonstration code for the :mod:`turtle` module was moved from the *Demo*
 directory to main library.  It includes over a dozen sample scripts with
-lively displays.  Being on :attr:`sys.path`, it can now be run directly
+lively displays.  Being on :data:`sys.path`, it can now be run directly
 from the command-line:
 
 .. code-block:: shell-session
@@ -2566,10 +2566,10 @@ Changes to Python's build process and to the C API include:
   (:issue:`2443`).
 
 * A new C API function :c:func:`PySys_SetArgvEx` allows an embedded interpreter
-  to set :attr:`sys.argv` without also modifying :attr:`sys.path`
+  to set :data:`sys.argv` without also modifying :data:`sys.path`
   (:issue:`5753`).
 
-* :c:macro:`PyEval_CallObject` is now only available in macro form.  The
+* :c:func:`!PyEval_CallObject` is now only available in macro form.  The
   function declaration, which was kept for backwards compatibility reasons, is
   now removed -- the macro was introduced in 1997 (:issue:`8276`).
 
@@ -2643,7 +2643,7 @@ require changes to your code:
   * ``""`` is now a valid value and is no longer automatically converted to an
     empty string. For empty strings, use ``"option ="`` in a line.
 
-* The :mod:`nntplib` module was reworked extensively, meaning that its APIs
+* The :mod:`!nntplib` module was reworked extensively, meaning that its APIs
   are often incompatible with the 3.1 APIs.
 
 * :class:`bytearray` objects can no longer be used as filenames; instead,
@@ -2658,7 +2658,7 @@ require changes to your code:
   * "t#" format has been removed: use "s#" or "s*" instead
   * "w" and "w#" formats has been removed: use "w*" instead
 
-* The :c:type:`PyCObject` type, deprecated in 3.1, has been removed.  To wrap
+* The :c:type:`!PyCObject` type, deprecated in 3.1, has been removed.  To wrap
   opaque C pointers in Python objects, the :c:type:`PyCapsule` API should be used
   instead; the new type has a well-defined interface for passing typing safety
   information and a less complicated signature for calling a destructor.
@@ -2731,15 +2731,15 @@ require changes to your code:
 
   (Contributed by Antoine Pitrou, :issue:`10272`.)
 
-* The misleading functions :c:func:`PyEval_AcquireLock()` and
-  :c:func:`PyEval_ReleaseLock()` have been officially deprecated.  The
-  thread-state aware APIs (such as :c:func:`PyEval_SaveThread()`
-  and :c:func:`PyEval_RestoreThread()`) should be used instead.
+* The misleading functions :c:func:`!PyEval_AcquireLock` and
+  :c:func:`!PyEval_ReleaseLock` have been officially deprecated.  The
+  thread-state aware APIs (such as :c:func:`PyEval_SaveThread`
+  and :c:func:`PyEval_RestoreThread`) should be used instead.
 
 * Due to security risks, :func:`asyncore.handle_accept` has been deprecated, and
   a new function, :func:`asyncore.handle_accepted`, was added to replace it.
 
   (Contributed by Giampaolo Rodola in :issue:`6706`.)
 
-* Due to the new :term:`GIL` implementation, :c:func:`PyEval_InitThreads()`
-  cannot be called before :c:func:`Py_Initialize()` anymore.
+* Due to the new :term:`GIL` implementation, :c:func:`!PyEval_InitThreads`
+  cannot be called before :c:func:`Py_Initialize` anymore.
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
index f121652ba51cbc..5674bc7f359b72 100644
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -249,7 +249,7 @@ Changes introduced by :pep:`393` are the following:
     non-BMP code points.
 
 * The value of :data:`sys.maxunicode` is now always ``1114111`` (``0x10FFFF``
-  in hexadecimal).  The :c:func:`PyUnicode_GetMax` function still returns
+  in hexadecimal).  The :c:func:`!PyUnicode_GetMax` function still returns
   either ``0xFFFF`` or ``0x10FFFF`` for backward compatibility, and it should
   not be used with the new Unicode API (see :issue:`13054`).
 
@@ -648,7 +648,7 @@ PEP 421: Adding sys.implementation
 
 A new attribute on the :mod:`sys` module exposes details specific to the
 implementation of the currently running interpreter.  The initial set of
-attributes on :attr:`sys.implementation` are ``name``, ``version``,
+attributes on :data:`sys.implementation` are ``name``, ``version``,
 ``hexversion``, and ``cache_tag``.
 
 The intention of ``sys.implementation`` is to consolidate into one namespace
@@ -719,7 +719,7 @@ and does not enforce any method requirements.
 
 In terms of finders, :class:`importlib.machinery.FileFinder` exposes the
 mechanism used to search for source and bytecode files of a module. Previously
-this class was an implicit member of :attr:`sys.path_hooks`.
+this class was an implicit member of :data:`sys.path_hooks`.
 
 For loaders, the new abstract base class :class:`importlib.abc.FileLoader` helps
 write a loader that uses the file system as the storage mechanism for a module's
@@ -735,7 +735,7 @@ provide the full name of the module now instead of just the tail end of the
 module's name.
 
 The :func:`importlib.invalidate_caches` function will now call the method with
-the same name on all finders cached in :attr:`sys.path_importer_cache` to help
+the same name on all finders cached in :data:`sys.path_importer_cache` to help
 clean up any stored state as necessary.
 
 Visible Changes
@@ -745,8 +745,8 @@ For potential required changes to code, see the `Porting Python code`_
 section.
 
 Beyond the expanse of what :mod:`importlib` now exposes, there are other
-visible changes to import. The biggest is that :attr:`sys.meta_path` and
-:attr:`sys.path_hooks` now store all of the meta path finders and path entry
+visible changes to import. The biggest is that :data:`sys.meta_path` and
+:data:`sys.path_hooks` now store all of the meta path finders and path entry
 hooks used by import.  Previously the finders were implicit and hidden within
 the C code of import instead of being directly exposed. This means that one can
 now easily remove or change the order of the various finders to fit one's needs.
@@ -761,9 +761,9 @@ Loaders are also now expected to set the ``__package__`` attribute from
 :pep:`366`. Once again, import itself is already setting this on all loaders
 from :mod:`importlib` and import itself is setting the attribute post-load.
 
-``None`` is now inserted into :attr:`sys.path_importer_cache` when no finder
-can be found on :attr:`sys.path_hooks`. Since :class:`!imp.NullImporter` is not
-directly exposed on :attr:`sys.path_hooks` it could no longer be relied upon to
+``None`` is now inserted into :data:`sys.path_importer_cache` when no finder
+can be found on :data:`sys.path_hooks`. Since :class:`!imp.NullImporter` is not
+directly exposed on :data:`sys.path_hooks` it could no longer be relied upon to
 always be available to use as a value representing no finder found.
 
 All other changes relate to semantic changes which should be taken into
@@ -842,7 +842,7 @@ Builtin functions and types
 
 * :func:`open` gets a new *opener* parameter: the underlying file descriptor
   for the file object is then obtained by calling *opener* with (*file*,
-  *flags*). It can be used to use custom flags like :data:`os.O_CLOEXEC` for
+  *flags*). It can be used to use custom flags like :const:`os.O_CLOEXEC` for
   example. The ``'x'`` mode was added: open for exclusive creation, failing if
   the file already exists.
 * :func:`print`: added the *flush* keyword argument. If the *flush* keyword
@@ -917,12 +917,12 @@ abstract methods. The recommended approach to declaring abstract descriptors is
 now to provide :attr:`__isabstractmethod__` as a dynamically updated
 property. The built-in descriptors have been updated accordingly.
 
-  * :class:`abc.abstractproperty` has been deprecated, use :class:`property`
-    with :func:`abc.abstractmethod` instead.
-  * :class:`abc.abstractclassmethod` has been deprecated, use
-    :class:`classmethod` with :func:`abc.abstractmethod` instead.
-  * :class:`abc.abstractstaticmethod` has been deprecated, use
-    :class:`staticmethod` with :func:`abc.abstractmethod` instead.
+* :class:`abc.abstractproperty` has been deprecated, use :class:`property`
+  with :func:`abc.abstractmethod` instead.
+* :class:`abc.abstractclassmethod` has been deprecated, use
+  :class:`classmethod` with :func:`abc.abstractmethod` instead.
+* :class:`abc.abstractstaticmethod` has been deprecated, use
+  :class:`staticmethod` with :func:`abc.abstractmethod` instead.
 
 (Contributed by Darren Dale in :issue:`11610`.)
 
@@ -1052,40 +1052,40 @@ their ``__init__`` method (for example, file objects) or in their
 crypt
 -----
 
-Addition of salt and modular crypt format (hashing method) and the :func:`~crypt.mksalt`
-function to the :mod:`crypt` module.
+Addition of salt and modular crypt format (hashing method) and the :func:`~!crypt.mksalt`
+function to the :mod:`!crypt` module.
 
 (:issue:`10924`)
 
 curses
 ------
 
- * If the :mod:`curses` module is linked to the ncursesw library, use Unicode
-   functions when Unicode strings or characters are passed (e.g.
-   :c:func:`waddwstr`), and bytes functions otherwise (e.g. :c:func:`waddstr`).
- * Use the locale encoding instead of ``utf-8`` to encode Unicode strings.
- * :class:`curses.window` has a new :attr:`curses.window.encoding` attribute.
- * The :class:`curses.window` class has a new :meth:`~curses.window.get_wch`
-   method to get a wide character
- * The :mod:`curses` module has a new :meth:`~curses.unget_wch` function to
-   push a wide character so the next :meth:`~curses.window.get_wch` will return
-   it
+* If the :mod:`curses` module is linked to the ncursesw library, use Unicode
+  functions when Unicode strings or characters are passed (e.g.
+  :c:func:`waddwstr`), and bytes functions otherwise (e.g. :c:func:`waddstr`).
+* Use the locale encoding instead of ``utf-8`` to encode Unicode strings.
+* :class:`curses.window` has a new :attr:`curses.window.encoding` attribute.
+* The :class:`curses.window` class has a new :meth:`~curses.window.get_wch`
+  method to get a wide character
+* The :mod:`curses` module has a new :meth:`~curses.unget_wch` function to
+  push a wide character so the next :meth:`~curses.window.get_wch` will return
+  it
 
 (Contributed by Iñigo Serna in :issue:`6755`.)
 
 datetime
 --------
 
- * Equality comparisons between naive and aware :class:`~datetime.datetime`
-   instances now return :const:`False` instead of raising :exc:`TypeError`
-   (:issue:`15006`).
- * New :meth:`datetime.datetime.timestamp` method: Return POSIX timestamp
-   corresponding to the :class:`~datetime.datetime` instance.
- * The :meth:`datetime.datetime.strftime` method supports formatting years
-   older than 1000.
- * The :meth:`datetime.datetime.astimezone` method can now be
-   called without arguments to convert datetime instance to the system
-   timezone.
+* Equality comparisons between naive and aware :class:`~datetime.datetime`
+  instances now return :const:`False` instead of raising :exc:`TypeError`
+  (:issue:`15006`).
+* New :meth:`datetime.datetime.timestamp` method: Return POSIX timestamp
+  corresponding to the :class:`~datetime.datetime` instance.
+* The :meth:`datetime.datetime.strftime` method supports formatting years
+  older than 1000.
+* The :meth:`datetime.datetime.astimezone` method can now be
+  called without arguments to convert datetime instance to the system
+  timezone.
 
 
 .. _new-decimal:
@@ -1127,7 +1127,7 @@ Features
 
 * If Python is compiled without threads, the C version automatically
   disables the expensive thread local context machinery. In this case,
-  the variable :data:`~decimal.HAVE_THREADS` is set to ``False``.
+  the variable :const:`~decimal.HAVE_THREADS` is set to ``False``.
 
 API changes
 ~~~~~~~~~~~
@@ -1135,20 +1135,20 @@ API changes
 * The C module has the following context limits, depending on the machine
   architecture:
 
-   +-------------------+---------------------+------------------------------+
-   |                   |       32-bit        |            64-bit            |
-   +===================+=====================+==============================+
-   | :const:`MAX_PREC` | :const:`425000000`  | :const:`999999999999999999`  |
-   +-------------------+---------------------+------------------------------+
-   | :const:`MAX_EMAX` | :const:`425000000`  | :const:`999999999999999999`  |
-   +-------------------+---------------------+------------------------------+
-   | :const:`MIN_EMIN` | :const:`-425000000` | :const:`-999999999999999999` |
-   +-------------------+---------------------+------------------------------+
+   +-------------------+----------------+-------------------------+
+   |                   |       32-bit   |            64-bit       |
+   +===================+================+=========================+
+   | :const:`MAX_PREC` | ``425000000``  | ``999999999999999999``  |
+   +-------------------+----------------+-------------------------+
+   | :const:`MAX_EMAX` | ``425000000``  | ``999999999999999999``  |
+   +-------------------+----------------+-------------------------+
+   | :const:`MIN_EMIN` | ``-425000000`` | ``-999999999999999999`` |
+   +-------------------+----------------+-------------------------+
 
 * In the context templates (:class:`~decimal.DefaultContext`,
   :class:`~decimal.BasicContext` and :class:`~decimal.ExtendedContext`)
   the magnitude of :attr:`~decimal.Context.Emax` and
-  :attr:`~decimal.Context.Emin` has changed to :const:`999999`.
+  :attr:`~decimal.Context.Emin` has changed to ``999999``.
 
 * The :class:`~decimal.Decimal` constructor in decimal.py does not observe
   the context limits and converts values with arbitrary exponents or precision
@@ -1210,25 +1210,25 @@ the ``Message`` object it is serializing.  The default policy is
 
 The minimum set of controls implemented by all ``policy`` objects are:
 
-    .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
-    ===============     =======================================================
-    max_line_length     The maximum length, excluding the linesep character(s),
-                        individual lines may have when a ``Message`` is
-                        serialized.  Defaults to 78.
+===============     =======================================================
+max_line_length     The maximum length, excluding the linesep character(s),
+                    individual lines may have when a ``Message`` is
+                    serialized.  Defaults to 78.
 
-    linesep             The character used to separate individual lines when a
-                        ``Message`` is serialized.  Defaults to ``\n``.
+linesep             The character used to separate individual lines when a
+                    ``Message`` is serialized.  Defaults to ``\n``.
 
-    cte_type            ``7bit`` or ``8bit``.  ``8bit`` applies only to a
-                        ``Bytes`` ``generator``, and means that non-ASCII may
-                        be used where allowed by the protocol (or where it
-                        exists in the original input).
+cte_type            ``7bit`` or ``8bit``.  ``8bit`` applies only to a
+                    ``Bytes`` ``generator``, and means that non-ASCII may
+                    be used where allowed by the protocol (or where it
+                    exists in the original input).
 
-    raise_on_defect     Causes a ``parser`` to raise error when defects are
-                        encountered instead of adding them to the ``Message``
-                        object's ``defects`` list.
-    ===============     =======================================================
+raise_on_defect     Causes a ``parser`` to raise error when defects are
+                    encountered instead of adding them to the ``Message``
+                    object's ``defects`` list.
+===============     =======================================================
 
 A new policy instance, with new settings, is created using the
 :meth:`~email.policy.Policy.clone` method of policy objects.  ``clone`` takes
@@ -1263,21 +1263,21 @@ removal of the code) may occur if deemed necessary by the core developers.
 The new policies are instances of :class:`~email.policy.EmailPolicy`,
 and add the following additional controls:
 
-    .. tabularcolumns:: |l|L|
+.. tabularcolumns:: |l|L|
 
-    ===============     =======================================================
-    refold_source       Controls whether or not headers parsed by a
-                        :mod:`~email.parser` are refolded by the
-                        :mod:`~email.generator`.  It can be ``none``, ``long``,
-                        or ``all``.  The default is ``long``, which means that
-                        source headers with a line longer than
-                        ``max_line_length`` get refolded.  ``none`` means no
-                        line get refolded, and ``all`` means that all lines
-                        get refolded.
+===============     =======================================================
+refold_source       Controls whether or not headers parsed by a
+                    :mod:`~email.parser` are refolded by the
+                    :mod:`~email.generator`.  It can be ``none``, ``long``,
+                    or ``all``.  The default is ``long``, which means that
+                    source headers with a line longer than
+                    ``max_line_length`` get refolded.  ``none`` means no
+                    line get refolded, and ``all`` means that all lines
+                    get refolded.
 
-    header_factory      A callable that take a ``name`` and ``value`` and
-                        produces a custom header object.
-    ===============     =======================================================
+header_factory      A callable that take a ``name`` and ``value`` and
+                    produces a custom header object.
+===============     =======================================================
 
 The ``header_factory`` is the key to the new features provided by the new
 policies.  When one of the new policies is used, any header retrieved from
@@ -1352,18 +1352,18 @@ API.
 
 New utility functions:
 
-   * :func:`~email.utils.format_datetime`: given a :class:`~datetime.datetime`,
-     produce a string formatted for use in an email header.
+* :func:`~email.utils.format_datetime`: given a :class:`~datetime.datetime`,
+  produce a string formatted for use in an email header.
 
-   * :func:`~email.utils.parsedate_to_datetime`: given a date string from
-     an email header, convert it into an aware :class:`~datetime.datetime`,
-     or a naive :class:`~datetime.datetime` if the offset is ``-0000``.
+* :func:`~email.utils.parsedate_to_datetime`: given a date string from
+  an email header, convert it into an aware :class:`~datetime.datetime`,
+  or a naive :class:`~datetime.datetime` if the offset is ``-0000``.
 
-   * :func:`~email.utils.localtime`: With no argument, returns the
-     current local time as an aware :class:`~datetime.datetime` using the local
-     :class:`~datetime.timezone`.  Given an aware :class:`~datetime.datetime`,
-     converts it into an aware :class:`~datetime.datetime` using the
-     local :class:`~datetime.timezone`.
+* :func:`~email.utils.localtime`: With no argument, returns the
+  current local time as an aware :class:`~datetime.datetime` using the local
+  :class:`~datetime.timezone`.  Given an aware :class:`~datetime.datetime`,
+  converts it into an aware :class:`~datetime.datetime` using the
+  local :class:`~datetime.timezone`.
 
 
 ftplib
@@ -1558,7 +1558,7 @@ Schlawack in :issue:`12708`.)
 nntplib
 -------
 
-The :class:`nntplib.NNTP` class now supports the context management protocol to
+The :class:`!nntplib.NNTP` class now supports the context management protocol to
 unconditionally consume :exc:`socket.error` exceptions and to close the NNTP
 connection when done::
 
@@ -1576,8 +1576,8 @@ os
 --
 
 * The :mod:`os` module has a new :func:`~os.pipe2` function that makes it
-  possible to create a pipe with :data:`~os.O_CLOEXEC` or
-  :data:`~os.O_NONBLOCK` flags set atomically. This is especially useful to
+  possible to create a pipe with :const:`~os.O_CLOEXEC` or
+  :const:`~os.O_NONBLOCK` flags set atomically. This is especially useful to
   avoid race conditions in multi-threaded programs.
 
 * The :mod:`os` module has a new :func:`~os.sendfile` function which provides
@@ -1691,9 +1691,9 @@ os
 * Some platforms now support additional constants for the :func:`~os.lseek`
   function, such as ``os.SEEK_HOLE`` and ``os.SEEK_DATA``.
 
-* New constants :data:`~os.RTLD_LAZY`, :data:`~os.RTLD_NOW`,
-  :data:`~os.RTLD_GLOBAL`, :data:`~os.RTLD_LOCAL`, :data:`~os.RTLD_NODELETE`,
-  :data:`~os.RTLD_NOLOAD`, and :data:`~os.RTLD_DEEPBIND` are available on
+* New constants :const:`~os.RTLD_LAZY`, :const:`~os.RTLD_NOW`,
+  :const:`~os.RTLD_GLOBAL`, :const:`~os.RTLD_LOCAL`, :const:`~os.RTLD_NODELETE`,
+  :const:`~os.RTLD_NOLOAD`, and :const:`~os.RTLD_DEEPBIND` are available on
   platforms that support them.   These are for use with the
   :func:`sys.setdlopenflags` function, and supersede the similar constants
   defined in :mod:`ctypes` and :mod:`DLFCN`.  (Contributed by Victor Stinner
@@ -1778,7 +1778,7 @@ shlex
 -----
 
 The previously undocumented helper function ``quote`` from the
-:mod:`pipes` modules has been moved to the :mod:`shlex` module and
+:mod:`!pipes` modules has been moved to the :mod:`shlex` module and
 documented.  :func:`~shlex.quote` properly escapes all characters in a string
 that might be otherwise given special meaning by the shell.
 
@@ -1952,7 +1952,7 @@ ssl
 
 * You can query the SSL compression algorithm used by an SSL socket, thanks
   to its new :meth:`~ssl.SSLSocket.compression` method.  The new attribute
-  :attr:`~ssl.OP_NO_COMPRESSION` can be used to disable compression.
+  :const:`~ssl.OP_NO_COMPRESSION` can be used to disable compression.
   (Contributed by Antoine Pitrou in :issue:`13634`.)
 
 * Support has been added for the Next Protocol Negotiation extension using
@@ -1966,7 +1966,7 @@ ssl
 * The :func:`~ssl.get_server_certificate` function now supports IPv6.
   (Contributed by Charles-François Natali in :issue:`11811`.)
 
-* New attribute :attr:`~ssl.OP_CIPHER_SERVER_PREFERENCE` allows setting
+* New attribute :const:`~ssl.OP_CIPHER_SERVER_PREFERENCE` allows setting
   SSLv3 server sockets to use the server's cipher ordering preference rather
   than the client's (:issue:`13635`).
 
@@ -1984,7 +1984,7 @@ the form '-rwxrwxrwx'.
 struct
 ------
 
-The :mod:`struct` module now supports ``ssize_t`` and ``size_t`` via the
+The :mod:`struct` module now supports :c:type:`ssize_t` and :c:type:`size_t` via the
 new codes ``n`` and ``N``, respectively.  (Contributed by Antoine Pitrou
 in :issue:`3163`.)
 
@@ -1995,7 +1995,7 @@ subprocess
 Command strings can now be bytes objects on posix platforms.  (Contributed by
 Victor Stinner in :issue:`8513`.)
 
-A new constant :data:`~subprocess.DEVNULL` allows suppressing output in a
+A new constant :const:`~subprocess.DEVNULL` allows suppressing output in a
 platform-independent fashion.  (Contributed by Ross Lagerwall in
 :issue:`5870`.)
 
@@ -2067,7 +2067,7 @@ The :pep:`418` added new functions to the :mod:`time` module:
 Other new functions:
 
 * :func:`~time.clock_getres`, :func:`~time.clock_gettime` and
-  :func:`~time.clock_settime` functions with ``CLOCK_xxx`` constants.
+  :func:`~time.clock_settime` functions with :samp:`CLOCK_{xxx}` constants.
   (Contributed by Victor Stinner in :issue:`10278`.)
 
 To improve cross platform consistency, :func:`~time.sleep` now raises a
@@ -2141,7 +2141,7 @@ New attribute :attr:`zlib.Decompress.eof` makes it possible to distinguish
 between a properly formed compressed stream and an incomplete or truncated one.
 (Contributed by Nadeem Vawda in :issue:`12646`.)
 
-New attribute :attr:`zlib.ZLIB_RUNTIME_VERSION` reports the version string of
+New attribute :const:`zlib.ZLIB_RUNTIME_VERSION` reports the version string of
 the underlying ``zlib`` library that is loaded at runtime.  (Contributed by
 Torsten Landschoff in :issue:`12306`.)
 
@@ -2195,8 +2195,8 @@ Changes to Python's build process and to the C API include:
     * :c:func:`PyUnicode_AsUCS4`, :c:func:`PyUnicode_AsUCS4Copy`
     * :c:macro:`PyUnicode_DATA`, :c:macro:`PyUnicode_1BYTE_DATA`,
       :c:macro:`PyUnicode_2BYTE_DATA`, :c:macro:`PyUnicode_4BYTE_DATA`
-    * :c:macro:`PyUnicode_KIND` with :c:type:`PyUnicode_Kind` enum:
-      :c:data:`PyUnicode_WCHAR_KIND`, :c:data:`PyUnicode_1BYTE_KIND`,
+    * :c:macro:`PyUnicode_KIND` with :c:enum:`PyUnicode_Kind` enum:
+      :c:data:`!PyUnicode_WCHAR_KIND`, :c:data:`PyUnicode_1BYTE_KIND`,
       :c:data:`PyUnicode_2BYTE_KIND`, :c:data:`PyUnicode_4BYTE_KIND`
     * :c:macro:`PyUnicode_READ`, :c:macro:`PyUnicode_READ_CHAR`, :c:macro:`PyUnicode_WRITE`
     * :c:macro:`PyUnicode_MAX_CHAR_VALUE`
@@ -2270,58 +2270,58 @@ removed in Python 4. All functions using this type are deprecated:
 Unicode functions and methods using :c:type:`Py_UNICODE` and
 :c:expr:`Py_UNICODE*` types:
 
-* :c:macro:`PyUnicode_FromUnicode`: use :c:func:`PyUnicode_FromWideChar` or
+* :c:macro:`!PyUnicode_FromUnicode`: use :c:func:`PyUnicode_FromWideChar` or
   :c:func:`PyUnicode_FromKindAndData`
-* :c:macro:`PyUnicode_AS_UNICODE`, :c:func:`PyUnicode_AsUnicode`,
-  :c:func:`PyUnicode_AsUnicodeAndSize`: use :c:func:`PyUnicode_AsWideCharString`
-* :c:macro:`PyUnicode_AS_DATA`: use :c:macro:`PyUnicode_DATA` with
+* :c:macro:`!PyUnicode_AS_UNICODE`, :c:func:`!PyUnicode_AsUnicode`,
+  :c:func:`!PyUnicode_AsUnicodeAndSize`: use :c:func:`PyUnicode_AsWideCharString`
+* :c:macro:`!PyUnicode_AS_DATA`: use :c:macro:`PyUnicode_DATA` with
   :c:macro:`PyUnicode_READ` and :c:macro:`PyUnicode_WRITE`
-* :c:macro:`PyUnicode_GET_SIZE`, :c:func:`PyUnicode_GetSize`: use
+* :c:macro:`!PyUnicode_GET_SIZE`, :c:func:`!PyUnicode_GetSize`: use
   :c:macro:`PyUnicode_GET_LENGTH` or :c:func:`PyUnicode_GetLength`
-* :c:macro:`PyUnicode_GET_DATA_SIZE`: use
+* :c:macro:`!PyUnicode_GET_DATA_SIZE`: use
   ``PyUnicode_GET_LENGTH(str) * PyUnicode_KIND(str)`` (only work on ready
   strings)
-* :c:func:`PyUnicode_AsUnicodeCopy`: use :c:func:`PyUnicode_AsUCS4Copy` or
+* :c:func:`!PyUnicode_AsUnicodeCopy`: use :c:func:`PyUnicode_AsUCS4Copy` or
   :c:func:`PyUnicode_AsWideCharString`
-* :c:func:`PyUnicode_GetMax`
+* :c:func:`!PyUnicode_GetMax`
 
 
 Functions and macros manipulating Py_UNICODE* strings:
 
-* :c:macro:`Py_UNICODE_strlen`: use :c:func:`PyUnicode_GetLength` or
+* :c:macro:`!Py_UNICODE_strlen()`: use :c:func:`PyUnicode_GetLength` or
   :c:macro:`PyUnicode_GET_LENGTH`
-* :c:macro:`Py_UNICODE_strcat`: use :c:func:`PyUnicode_CopyCharacters` or
+* :c:macro:`!Py_UNICODE_strcat()`: use :c:func:`PyUnicode_CopyCharacters` or
   :c:func:`PyUnicode_FromFormat`
-* :c:macro:`Py_UNICODE_strcpy`, :c:macro:`Py_UNICODE_strncpy`,
-  :c:macro:`Py_UNICODE_COPY`: use :c:func:`PyUnicode_CopyCharacters` or
+* :c:macro:`!Py_UNICODE_strcpy()`, :c:macro:`!Py_UNICODE_strncpy()`,
+  :c:macro:`!Py_UNICODE_COPY()`: use :c:func:`PyUnicode_CopyCharacters` or
   :c:func:`PyUnicode_Substring`
-* :c:macro:`Py_UNICODE_strcmp`: use :c:func:`PyUnicode_Compare`
-* :c:macro:`Py_UNICODE_strncmp`: use :c:func:`PyUnicode_Tailmatch`
-* :c:macro:`Py_UNICODE_strchr`, :c:macro:`Py_UNICODE_strrchr`: use
+* :c:macro:`!Py_UNICODE_strcmp()`: use :c:func:`PyUnicode_Compare`
+* :c:macro:`!Py_UNICODE_strncmp()`: use :c:func:`PyUnicode_Tailmatch`
+* :c:macro:`!Py_UNICODE_strchr()`, :c:macro:`!Py_UNICODE_strrchr()`: use
   :c:func:`PyUnicode_FindChar`
-* :c:macro:`Py_UNICODE_FILL`: use :c:func:`PyUnicode_Fill`
-* :c:macro:`Py_UNICODE_MATCH`
+* :c:macro:`!Py_UNICODE_FILL()`: use :c:func:`PyUnicode_Fill`
+* :c:macro:`!Py_UNICODE_MATCH`
 
 Encoders:
 
-* :c:func:`PyUnicode_Encode`: use :c:func:`PyUnicode_AsEncodedObject`
-* :c:func:`PyUnicode_EncodeUTF7`
-* :c:func:`PyUnicode_EncodeUTF8`: use :c:func:`PyUnicode_AsUTF8` or
+* :c:func:`!PyUnicode_Encode`: use :c:func:`!PyUnicode_AsEncodedObject`
+* :c:func:`!PyUnicode_EncodeUTF7`
+* :c:func:`!PyUnicode_EncodeUTF8`: use :c:func:`PyUnicode_AsUTF8` or
   :c:func:`PyUnicode_AsUTF8String`
-* :c:func:`PyUnicode_EncodeUTF32`
-* :c:func:`PyUnicode_EncodeUTF16`
-* :c:func:`PyUnicode_EncodeUnicodeEscape` use
+* :c:func:`!PyUnicode_EncodeUTF32`
+* :c:func:`!PyUnicode_EncodeUTF16`
+* :c:func:`!PyUnicode_EncodeUnicodeEscape` use
   :c:func:`PyUnicode_AsUnicodeEscapeString`
-* :c:func:`PyUnicode_EncodeRawUnicodeEscape` use
+* :c:func:`!PyUnicode_EncodeRawUnicodeEscape` use
   :c:func:`PyUnicode_AsRawUnicodeEscapeString`
-* :c:func:`PyUnicode_EncodeLatin1`: use :c:func:`PyUnicode_AsLatin1String`
-* :c:func:`PyUnicode_EncodeASCII`: use :c:func:`PyUnicode_AsASCIIString`
-* :c:func:`PyUnicode_EncodeCharmap`
-* :c:func:`PyUnicode_TranslateCharmap`
-* :c:func:`PyUnicode_EncodeMBCS`: use :c:func:`PyUnicode_AsMBCSString` or
+* :c:func:`!PyUnicode_EncodeLatin1`: use :c:func:`PyUnicode_AsLatin1String`
+* :c:func:`!PyUnicode_EncodeASCII`: use :c:func:`PyUnicode_AsASCIIString`
+* :c:func:`!PyUnicode_EncodeCharmap`
+* :c:func:`!PyUnicode_TranslateCharmap`
+* :c:func:`!PyUnicode_EncodeMBCS`: use :c:func:`PyUnicode_AsMBCSString` or
   :c:func:`PyUnicode_EncodeCodePage` (with ``CP_ACP`` code_page)
-* :c:func:`PyUnicode_EncodeDecimal`,
-  :c:func:`PyUnicode_TransformDecimalToASCII`
+* :c:func:`!PyUnicode_EncodeDecimal`,
+  :c:func:`!PyUnicode_TransformDecimalToASCII`
 
 
 Deprecated features
@@ -2378,16 +2378,16 @@ Porting Python code
 * :func:`__import__` no longer allows one to use an index value other than 0
   for top-level modules. E.g. ``__import__('sys', level=1)`` is now an error.
 
-* Because :attr:`sys.meta_path` and :attr:`sys.path_hooks` now have finders on
+* Because :data:`sys.meta_path` and :data:`sys.path_hooks` now have finders on
   them by default, you will most likely want to use :meth:`list.insert` instead
   of :meth:`list.append` to add to those lists.
 
-* Because ``None`` is now inserted into :attr:`sys.path_importer_cache`, if you
+* Because ``None`` is now inserted into :data:`sys.path_importer_cache`, if you
   are clearing out entries in the dictionary of paths that do not have a
   finder, you will need to remove keys paired with values of ``None`` **and**
   :class:`!imp.NullImporter` to be backwards-compatible. This will lead to extra
   overhead on older versions of Python that re-insert ``None`` into
-  :attr:`sys.path_importer_cache` where it represents the use of implicit
+  :data:`sys.path_importer_cache` where it represents the use of implicit
   finders, but semantically it should not change anything.
 
 * :class:`!importlib.abc.Finder` no longer specifies a ``find_module()`` abstract
@@ -2445,7 +2445,7 @@ Porting Python code
   error instead of sleeping forever.  It has always raised an error on posix.
 
 * The ``ast.__version__`` constant has been removed.  If you need to
-  make decisions affected by the AST version, use :attr:`sys.version_info`
+  make decisions affected by the AST version, use :data:`sys.version_info`
   to make the decision.
 
 * Code that used to work around the fact that the :mod:`threading` module used
@@ -2462,7 +2462,7 @@ Porting C code
 --------------
 
 * In the course of changes to the buffer API the undocumented
-  :c:member:`~Py_buffer.smalltable` member of the
+  :c:member:`!smalltable` member of the
   :c:type:`Py_buffer` structure has been removed and the
   layout of the :c:type:`PyMemoryViewObject` has changed.
 
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 45bb91833a352b..2ddab76814369e 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -605,15 +605,15 @@ Using ``ABC`` as a base class has essentially the same effect as specifying
 aifc
 ----
 
-The :meth:`~aifc.aifc.getparams` method now returns a namedtuple rather than a
+The :meth:`~!aifc.aifc.getparams` method now returns a namedtuple rather than a
 plain tuple.  (Contributed by Claudiu Popa in :issue:`17818`.)
 
-:func:`aifc.open` now supports the context management protocol: when used in a
-:keyword:`with` block, the :meth:`~aifc.aifc.close` method of the returned
+:func:`!aifc.open` now supports the context management protocol: when used in a
+:keyword:`with` block, the :meth:`~!aifc.aifc.close` method of the returned
 object will be called automatically at the end of the block.  (Contributed by
 Serhiy Storchacha in :issue:`16486`.)
 
-The :meth:`~aifc.aifc.writeframesraw` and :meth:`~aifc.aifc.writeframes`
+The :meth:`~!aifc.aifc.writeframesraw` and :meth:`~!aifc.aifc.writeframes`
 methods now accept any :term:`bytes-like object`.  (Contributed by Serhiy
 Storchaka in :issue:`8311`.)
 
@@ -629,14 +629,14 @@ by Lucas Maystre in :issue:`11175`.)
 audioop
 -------
 
-:mod:`audioop` now supports 24-bit samples.  (Contributed by Serhiy Storchaka
+:mod:`!audioop` now supports 24-bit samples.  (Contributed by Serhiy Storchaka
 in :issue:`12866`.)
 
-New :func:`~audioop.byteswap` function converts big-endian samples to
+New :func:`~!audioop.byteswap` function converts big-endian samples to
 little-endian and vice versa.  (Contributed by Serhiy Storchaka in
 :issue:`19641`.)
 
-All :mod:`audioop` functions now accept any :term:`bytes-like object`.  Strings
+All :mod:`!audioop` functions now accept any :term:`bytes-like object`.  Strings
 are not accepted: they didn't work before, now they raise an error right away.
 (Contributed by Serhiy Storchaka in :issue:`16685`.)
 
@@ -775,7 +775,7 @@ of a given opcode and argument, information that is not otherwise available.
 doctest
 -------
 
-A new :ref:`option flag <doctest-options>`, :data:`~doctest.FAIL_FAST`, halts
+A new :ref:`option flag <doctest-options>`, :const:`~doctest.FAIL_FAST`, halts
 test running as soon as the first failure is detected.  (Contributed by R.
 David Murray and Daniel Urban in :issue:`16522`.)
 
@@ -841,7 +841,7 @@ for example, if the file might have been changed and re-checked in less time
 than the resolution of a particular filesystem's file modification time field.
 (Contributed by Mark Levitt in :issue:`18149`.)
 
-New module attribute :data:`~filecmp.DEFAULT_IGNORES` provides the list of
+New module attribute :const:`~filecmp.DEFAULT_IGNORES` provides the list of
 directories that are used as the default value for the *ignore* parameter of
 the :func:`~filecmp.dircmp` function.  (Contributed by Eli Bendersky in
 :issue:`15442`.)
@@ -1189,7 +1189,7 @@ Windows).  (Contributed by Brian Curtin in :issue:`11939`.)
 root on Windows.  (Contributed by Tim Golden in :issue:`9035`.)
 
 :func:`os.open` supports two new flags on platforms that provide them,
-:data:`~os.O_PATH` (un-opened file descriptor), and :data:`~os.O_TMPFILE`
+:const:`~os.O_PATH` (un-opened file descriptor), and :const:`~os.O_TMPFILE`
 (unnamed temporary file; as of 3.4.0 release available only on Linux systems
 with a kernel version of 3.11 or newer that have uapi headers).  (Contributed
 by Christian Heimes in :issue:`18673` and Benjamin Peterson, respectively.)
@@ -1238,8 +1238,8 @@ plistlib
 stdlib serialization protocols, with new :func:`~plistlib.load`,
 :func:`~plistlib.dump`, :func:`~plistlib.loads`, and :func:`~plistlib.dumps`
 functions.  (The older API is now deprecated.)  In addition to the already
-supported XML plist format (:data:`~plistlib.FMT_XML`), it also now supports
-the binary plist format (:data:`~plistlib.FMT_BINARY`).  (Contributed by Ronald
+supported XML plist format (:const:`~plistlib.FMT_XML`), it also now supports
+the binary plist format (:const:`~plistlib.FMT_BINARY`).  (Contributed by Ronald
 Oussoren and others in :issue:`14455`.)
 
 
@@ -1323,14 +1323,14 @@ ability to query or set the resource limits for processes other than the one
 making the call.  (Contributed by Christian Heimes in :issue:`16595`.)
 
 On Linux kernel version 2.6.36 or later, there are also some new
-Linux specific constants: :attr:`~resource.RLIMIT_MSGQUEUE`,
-:attr:`~resource.RLIMIT_NICE`, :attr:`~resource.RLIMIT_RTPRIO`,
-:attr:`~resource.RLIMIT_RTTIME`, and :attr:`~resource.RLIMIT_SIGPENDING`.
+Linux specific constants: :const:`~resource.RLIMIT_MSGQUEUE`,
+:const:`~resource.RLIMIT_NICE`, :const:`~resource.RLIMIT_RTPRIO`,
+:const:`~resource.RLIMIT_RTTIME`, and :const:`~resource.RLIMIT_SIGPENDING`.
 (Contributed by Christian Heimes in :issue:`19324`.)
 
 On FreeBSD version 9 and later, there some new FreeBSD specific constants:
-:attr:`~resource.RLIMIT_SBSIZE`, :attr:`~resource.RLIMIT_SWAP`, and
-:attr:`~resource.RLIMIT_NPTS`.  (Contributed by Claudiu Popa in
+:const:`~resource.RLIMIT_SBSIZE`, :const:`~resource.RLIMIT_SWAP`, and
+:const:`~resource.RLIMIT_NPTS`.  (Contributed by Claudiu Popa in
 :issue:`19343`.)
 
 
@@ -1388,7 +1388,7 @@ try/except statement by code that only cares whether or not an error occurred.
 socket
 ------
 
-The socket module now supports the :data:`~socket.CAN_BCM` protocol on
+The socket module now supports the :const:`~socket.CAN_BCM` protocol on
 platforms that support it.  (Contributed by Brian Thorne in :issue:`15359`.)
 
 Socket objects have new methods to get or set their :ref:`inheritable flag
@@ -1399,7 +1399,7 @@ The ``socket.AF_*`` and ``socket.SOCK_*`` constants are now enumeration values
 using the new :mod:`enum` module.  This allows meaningful names to be printed
 during debugging, instead of integer "magic numbers".
 
-The :data:`~socket.AF_LINK` constant is now available on BSD and OSX.
+The :const:`~socket.AF_LINK` constant is now available on BSD and OSX.
 
 :func:`~socket.inet_pton` and :func:`~socket.inet_ntop` are now supported
 on Windows.  (Contributed by Atsuo Ishimoto in :issue:`7171`.)
@@ -1460,8 +1460,8 @@ Heimes in :issue:`18147`.)
 If OpenSSL 0.9.8 or later is available, :class:`~ssl.SSLContext` has a new
 attribute :attr:`~ssl.SSLContext.verify_flags` that can be used to control the
 certificate verification process by setting it to some combination of the new
-constants :data:`~ssl.VERIFY_DEFAULT`, :data:`~ssl.VERIFY_CRL_CHECK_LEAF`,
-:data:`~ssl.VERIFY_CRL_CHECK_CHAIN`, or :data:`~ssl.VERIFY_X509_STRICT`.
+constants :const:`~ssl.VERIFY_DEFAULT`, :const:`~ssl.VERIFY_CRL_CHECK_LEAF`,
+:const:`~ssl.VERIFY_CRL_CHECK_CHAIN`, or :const:`~ssl.VERIFY_X509_STRICT`.
 OpenSSL does not do any CRL verification by default.  (Contributed by
 Christien Heimes in :issue:`8813`.)
 
@@ -1500,7 +1500,7 @@ implementation is required as most of the values aren't standardized and
 are platform-dependent.  (Contributed by Christian Heimes in :issue:`11016`.)
 
 The module supports new :mod:`~stat.ST_MODE` flags, :mod:`~stat.S_IFDOOR`,
-:attr:`~stat.S_IFPORT`, and :attr:`~stat.S_IFWHT`.  (Contributed by
+:const:`~stat.S_IFPORT`, and :const:`~stat.S_IFWHT`.  (Contributed by
 Christian Hiemes in :issue:`11016`.)
 
 
@@ -1528,10 +1528,10 @@ work on Windows.  This change was actually inadvertently made in 3.3.4.
 sunau
 -----
 
-The :meth:`~sunau.getparams` method now returns a namedtuple rather than a
+The :meth:`~!sunau.getparams` method now returns a namedtuple rather than a
 plain tuple.  (Contributed by Claudiu Popa in :issue:`18901`.)
 
-:meth:`sunau.open` now supports the context management protocol: when used in a
+:meth:`!sunau.open` now supports the context management protocol: when used in a
 :keyword:`with` block, the ``close`` method of the returned object will be
 called automatically at the end of the block.  (Contributed by Serhiy Storchaka
 in :issue:`18878`.)
@@ -1540,8 +1540,8 @@ in :issue:`18878`.)
 support for writing 24 sample using the module.  (Contributed by
 Serhiy Storchaka in :issue:`19261`.)
 
-The :meth:`~sunau.AU_write.writeframesraw` and
-:meth:`~sunau.AU_write.writeframes` methods now accept any :term:`bytes-like
+The :meth:`~!sunau.AU_write.writeframesraw` and
+:meth:`~!sunau.AU_write.writeframes` methods now accept any :term:`bytes-like
 object`.  (Contributed by Serhiy Storchaka in :issue:`8311`.)
 
 
@@ -1849,7 +1849,7 @@ Python's default implementation to a SipHash implementation on platforms that
 have a 64 bit data type.  Any performance differences in comparison with the
 older FNV algorithm are trivial.
 
-The PEP adds additional fields to the :attr:`sys.hash_info` named tuple to
+The PEP adds additional fields to the :data:`sys.hash_info` named tuple to
 describe the hash algorithm in use by the currently executing binary.  Otherwise,
 the PEP does not alter any existing CPython APIs.
 
@@ -1891,7 +1891,7 @@ Other Build and C API Changes
   allowing retrieval of function pointers from named type slots when using
   the limited API.  (Contributed by Martin von Löwis in :issue:`17162`.)
 
-* The new :c:func:`Py_SetStandardStreamEncoding` pre-initialization API
+* The new :c:func:`!Py_SetStandardStreamEncoding` pre-initialization API
   allows applications embedding the CPython interpreter to reliably force
   a particular encoding and error handler for the standard streams.
   (Contributed by Bastien Montagne and Nick Coghlan in :issue:`16129`.)
@@ -2085,7 +2085,7 @@ Deprecations in the Python API
   :meth:`importlib.abc.MetaPathFinder.find_spec`;
   :meth:`!importlib.abc.PathEntryFinder.find_loader` and
   :meth:`!find_module` are replaced by
-  :meth:`importlib.abc.PathEntryFinder.find_spec`; all of the ``xxxLoader`` ABC
+  :meth:`importlib.abc.PathEntryFinder.find_spec`; all of the :samp:`{xxx}Loader` ABC
   ``load_module`` methods (:meth:`!importlib.abc.Loader.load_module`,
   :meth:`!importlib.abc.InspectLoader.load_module`,
   :meth:`!importlib.abc.FileLoader.load_module`,
@@ -2371,11 +2371,11 @@ Changes in the Python API
   3.3.3.
 
 * The :attr:`~cgi.FieldStorage.file` attribute is now automatically closed when
-  the creating :class:`cgi.FieldStorage` instance is garbage collected. If you
-  were pulling the file object out separately from the :class:`cgi.FieldStorage`
+  the creating :class:`!cgi.FieldStorage` instance is garbage collected. If you
+  were pulling the file object out separately from the :class:`!cgi.FieldStorage`
   instance and not keeping the instance alive, then you should either store the
-  entire :class:`cgi.FieldStorage` instance or read the contents of the file
-  before the :class:`cgi.FieldStorage` instance is garbage collected.
+  entire :class:`!cgi.FieldStorage` instance or read the contents of the file
+  before the :class:`!cgi.FieldStorage` instance is garbage collected.
 
 * Calling ``read`` or ``write`` on a closed SSL socket now raises an
   informative :exc:`ValueError` rather than the previous more mysterious
@@ -2434,7 +2434,7 @@ Changes in the Python API
   matched the input type, so if your code was depending on the return value
   being, say, a ``bytearray``, you will need to change your code.
 
-* :mod:`audioop` functions now raise an error immediately if passed string
+* :mod:`!audioop` functions now raise an error immediately if passed string
   input, instead of failing randomly later on (:issue:`16685`).
 
 * The new *convert_charrefs* argument to :class:`~html.parser.HTMLParser`
diff --git a/Doc/whatsnew/3.5.rst b/Doc/whatsnew/3.5.rst
index 14b6425cea699e..ae6affcab664c6 100644
--- a/Doc/whatsnew/3.5.rst
+++ b/Doc/whatsnew/3.5.rst
@@ -478,7 +478,7 @@ not make an additional system call::
 PEP 475: Retry system calls failing with EINTR
 ----------------------------------------------
 
-An :py:data:`errno.EINTR` error code is returned whenever a system call, that
+An :py:const:`errno.EINTR` error code is returned whenever a system call, that
 is waiting for I/O, is interrupted by a signal.  Previously, Python would
 raise :exc:`InterruptedError` in such cases.  This meant that, when writing a
 Python application, the developer had two choices:
@@ -527,7 +527,7 @@ by a signal:
   :func:`~os.writev`;
 
 * special cases: :func:`os.close` and :func:`os.dup2` now ignore
-  :py:data:`~errno.EINTR` errors; the syscall is not retried (see the PEP
+  :py:const:`~errno.EINTR` errors; the syscall is not retried (see the PEP
   for the rationale);
 
 * :mod:`select` functions: :func:`devpoll.poll() <select.devpoll.poll>`,
@@ -921,7 +921,7 @@ and improves their substitutability for lists.
 Docstrings produced by :func:`~collections.namedtuple` can now be updated::
 
     Point = namedtuple('Point', ['x', 'y'])
-    Point.__doc__ += ': Cartesian coodinate'
+    Point.__doc__ += ': Cartesian coordinate'
     Point.x.__doc__ = 'abscissa'
     Point.y.__doc__ = 'ordinate'
 
@@ -1045,8 +1045,8 @@ not just sequences.  (Contributed by Serhiy Storchaka in :issue:`23171`.)
 curses
 ------
 
-The new :func:`~curses.update_lines_cols` function updates the :envvar:`LINES`
-and :envvar:`COLS` environment variables.  This is useful for detecting
+The new :func:`~curses.update_lines_cols` function updates the :data:`LINES`
+and :data:`COLS` module variables.  This is useful for detecting
 manual screen resizing.  (Contributed by Arnon Yaari in :issue:`4254`.)
 
 
@@ -1252,7 +1252,7 @@ Oberkirch in :issue:`21800`.)
 imghdr
 ------
 
-The :func:`~imghdr.what` function now recognizes the
+The :func:`~!imghdr.what` function now recognizes the
 `OpenEXR <https://www.openexr.com>`_ format
 (contributed by Martin Vignali and Claudiu Popa in :issue:`20295`),
 and the `WebP <https://en.wikipedia.org/wiki/WebP>`_ format
@@ -1498,7 +1498,7 @@ use ``/dev/urandom`` and avoiding failures due to potential file descriptor
 exhaustion.  (Contributed by Victor Stinner in :issue:`22181`.)
 
 New :func:`~os.get_blocking` and :func:`~os.set_blocking` functions allow
-getting and setting a file descriptor's blocking mode (:data:`~os.O_NONBLOCK`.)
+getting and setting a file descriptor's blocking mode (:const:`~os.O_NONBLOCK`.)
 (Contributed by Victor Stinner in :issue:`22054`.)
 
 The :func:`~os.truncate` and :func:`~os.ftruncate` functions are now supported
@@ -1783,7 +1783,7 @@ the TLS handshake.
 The new
 :meth:`SSLSocket.selected_alpn_protocol() <ssl.SSLSocket.selected_alpn_protocol>`
 returns the protocol that was selected during the TLS handshake.
-The :data:`~ssl.HAS_ALPN` flag indicates whether ALPN support is present.
+The :const:`~ssl.HAS_ALPN` flag indicates whether ALPN support is present.
 
 
 Other Changes
@@ -2095,7 +2095,7 @@ accepts ``"x"`` to request exclusive creation.
 Other module-level changes
 ==========================
 
-Many functions in the :mod:`mmap`, :mod:`ossaudiodev`, :mod:`socket`,
+Many functions in the :mod:`mmap`, :mod:`!ossaudiodev`, :mod:`socket`,
 :mod:`ssl`, and :mod:`codecs` modules now accept writable
 :term:`bytes-like objects <bytes-like object>`.
 (Contributed by Serhiy Storchaka in :issue:`23001`.)
@@ -2192,7 +2192,7 @@ encode error with ``\N{...}`` escapes.
 (Contributed by Serhiy Storchaka in :issue:`19676`.)
 
 A new :c:func:`PyErr_FormatV` function similar to :c:func:`PyErr_Format`,
-but accepts a ``va_list`` argument.
+but accepts a :c:type:`va_list` argument.
 (Contributed by Antoine Pitrou in :issue:`18711`.)
 
 A new :c:data:`PyExc_RecursionError` exception.
@@ -2476,7 +2476,7 @@ Changes in the Python API
   in Python 3.5, all old ``.pyo`` files from previous versions of Python are
   invalid regardless of this PEP.
 
-* The :mod:`socket` module now exports the :data:`~socket.CAN_RAW_FD_FRAMES`
+* The :mod:`socket` module now exports the :const:`~socket.CAN_RAW_FD_FRAMES`
   constant on linux 3.6 and greater.
 
 * The :func:`ssl.cert_time_to_seconds` function now interprets the input time
@@ -2512,7 +2512,7 @@ Changes in the Python API
 Changes in the C API
 --------------------
 
-* The undocumented :c:member:`~PyMemoryViewObject.format` member of the
+* The undocumented :c:member:`!format` member of the
   (non-public) :c:type:`PyMemoryViewObject` structure has been removed.
   All extensions relying on the relevant parts in ``memoryobject.h``
   must be rebuilt.
@@ -2520,7 +2520,7 @@ Changes in the C API
 * The :c:type:`PyMemAllocator` structure was renamed to
   :c:type:`PyMemAllocatorEx` and a new ``calloc`` field was added.
 
-* Removed non-documented macro :c:macro:`PyObject_REPR` which leaked references.
+* Removed non-documented macro :c:macro:`!PyObject_REPR()` which leaked references.
   Use format character ``%R`` in :c:func:`PyUnicode_FromFormat`-like functions
   to format the :func:`repr` of the object.
   (Contributed by Serhiy Storchaka in :issue:`22453`.)
@@ -2533,7 +2533,7 @@ Changes in the C API
 
 * As part of the :pep:`492` implementation, the ``tp_reserved`` slot of
   :c:type:`PyTypeObject` was replaced with a
-  :c:member:`tp_as_async` slot.  Refer to :ref:`coro-objects` for
+  :c:member:`~PyTypeObject.tp_as_async` slot.  Refer to :ref:`coro-objects` for
   new types, structures and functions.
 
 
diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst
index 3a681754e25dd7..5a3cea0ec87cb2 100644
--- a/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@ -650,8 +650,8 @@ compiled in release mode using ``PYTHONMALLOC=debug``. Effects of debug hooks:
 * Detect writes before the start of a buffer (buffer underflows)
 * Detect writes after the end of a buffer (buffer overflows)
 * Check that the :term:`GIL <global interpreter lock>` is held when allocator
-  functions of :c:data:`PYMEM_DOMAIN_OBJ` (ex: :c:func:`PyObject_Malloc`) and
-  :c:data:`PYMEM_DOMAIN_MEM` (ex: :c:func:`PyMem_Malloc`) domains are called.
+  functions of :c:macro:`PYMEM_DOMAIN_OBJ` (ex: :c:func:`PyObject_Malloc`) and
+  :c:macro:`PYMEM_DOMAIN_MEM` (ex: :c:func:`PyMem_Malloc`) domains are called.
 
 Checking if the GIL is held is also a new feature of Python 3.6.
 
@@ -1388,7 +1388,7 @@ are treated as punctuation.
 site
 ----
 
-When specifying paths to add to :attr:`sys.path` in a ``.pth`` file,
+When specifying paths to add to :data:`sys.path` in a ``.pth`` file,
 you may now specify file paths on top of directories (e.g. zip files).
 (Contributed by Wolfgang Langner in :issue:`26587`).
 
@@ -1404,7 +1404,7 @@ socket
 ------
 
 The :func:`~socket.socket.ioctl` function now supports the
-:data:`~socket.SIO_LOOPBACK_FAST_PATH` control code.
+:const:`~socket.SIO_LOOPBACK_FAST_PATH` control code.
 (Contributed by Daniel Stokes in :issue:`26536`.)
 
 The :meth:`~socket.socket.getsockopt` constants ``SO_DOMAIN``,
@@ -1416,7 +1416,7 @@ The :meth:`~socket.socket.setsockopt` now supports the
 (Contributed by Christian Heimes in :issue:`27744`.)
 
 The socket module now supports the address family
-:data:`~socket.AF_ALG` to interface with Linux Kernel crypto API. ``ALG_*``,
+:const:`~socket.AF_ALG` to interface with Linux Kernel crypto API. ``ALG_*``,
 ``SOL_ALG`` and :meth:`~socket.socket.sendmsg_afalg` were added.
 (Contributed by Christian Heimes in :issue:`27744` with support from
 Victor Stinner.)
@@ -1520,7 +1520,7 @@ rather than the version that is being emulated for the process
 telnetlib
 ---------
 
-:class:`~telnetlib.Telnet` is now a context manager (contributed by
+:class:`!telnetlib.Telnet` is now a context manager (contributed by
 Stéphane Wirtel in :issue:`25485`).
 
 
@@ -1822,7 +1822,7 @@ Optimizations
   up to 80% faster. (Contributed by Josh Snider in :issue:`26574`).
 
 * Allocator functions of the :c:func:`PyMem_Malloc` domain
-  (:c:data:`PYMEM_DOMAIN_MEM`) now use the :ref:`pymalloc memory allocator
+  (:c:macro:`PYMEM_DOMAIN_MEM`) now use the :ref:`pymalloc memory allocator
   <pymalloc>` instead of :c:func:`malloc` function of the C library. The
   pymalloc allocator is optimized for objects smaller or equal to 512 bytes
   with a short lifetime, and use :c:func:`malloc` for larger memory blocks.
@@ -1874,8 +1874,8 @@ Build and C API Changes
   (Original patch by Alecsandru Patrascu of Intel in :issue:`26359`.)
 
 * The :term:`GIL <global interpreter lock>` must now be held when allocator
-  functions of :c:data:`PYMEM_DOMAIN_OBJ` (ex: :c:func:`PyObject_Malloc`) and
-  :c:data:`PYMEM_DOMAIN_MEM` (ex: :c:func:`PyMem_Malloc`) domains are called.
+  functions of :c:macro:`PYMEM_DOMAIN_OBJ` (ex: :c:func:`PyObject_Malloc`) and
+  :c:macro:`PYMEM_DOMAIN_MEM` (ex: :c:func:`PyMem_Malloc`) domains are called.
 
 * New :c:func:`Py_FinalizeEx` API which indicates if flushing buffered data
   failed.
@@ -2010,7 +2010,7 @@ been deprecated in previous versions of Python in favour of
 :meth:`importlib.abc.Loader.exec_module`.
 
 The :class:`importlib.machinery.WindowsRegistryFinder` class is now
-deprecated. As of 3.6.0, it is still added to :attr:`sys.meta_path` by
+deprecated. As of 3.6.0, it is still added to :data:`sys.meta_path` by
 default (on Windows), but this may change in future releases.
 
 os
@@ -2049,7 +2049,7 @@ of OpenSSL. Other features are deprecated in favor of a different API.
 tkinter
 ~~~~~~~
 
-The :mod:`tkinter.tix` module is now deprecated.  :mod:`tkinter` users
+The :mod:`!tkinter.tix` module is now deprecated.  :mod:`tkinter` users
 should use :mod:`tkinter.ttk` instead.
 
 .. _whatsnew36-venv:
@@ -2066,9 +2066,9 @@ environment.  (Contributed by Brett Cannon in :issue:`25154`.)
 Deprecated functions and types of the C API
 -------------------------------------------
 
-Undocumented functions :c:func:`PyUnicode_AsEncodedObject`,
-:c:func:`PyUnicode_AsDecodedObject`, :c:func:`PyUnicode_AsEncodedUnicode`
-and :c:func:`PyUnicode_AsDecodedUnicode` are deprecated now.
+Undocumented functions :c:func:`!PyUnicode_AsEncodedObject`,
+:c:func:`!PyUnicode_AsDecodedObject`, :c:func:`!PyUnicode_AsEncodedUnicode`
+and :c:func:`!PyUnicode_AsDecodedUnicode` are deprecated now.
 Use the :ref:`generic codec based API <codec-registry>` instead.
 
 
@@ -2160,14 +2160,15 @@ Changes in the Python API
 * :c:func:`PyErr_SetImportError` now sets :exc:`TypeError` when its **msg**
   argument is not set. Previously only ``NULL`` was returned.
 
-* The format of the ``co_lnotab`` attribute of code objects changed to support
+* The format of the :attr:`~codeobject.co_lnotab` attribute of code objects
+  changed to support
   a negative line number delta. By default, Python does not emit bytecode with
-  a negative line number delta. Functions using ``frame.f_lineno``,
+  a negative line number delta. Functions using :attr:`frame.f_lineno`,
   ``PyFrame_GetLineNumber()`` or ``PyCode_Addr2Line()`` are not affected.
-  Functions directly decoding ``co_lnotab`` should be updated to use a signed
+  Functions directly decoding :attr:`!co_lnotab` should be updated to use a signed
   8-bit integer type for the line number delta, but this is only required to
   support applications using a negative line number delta. See
-  ``Objects/lnotab_notes.txt`` for the ``co_lnotab`` format and how to decode
+  ``Objects/lnotab_notes.txt`` for the :attr:`!co_lnotab` format and how to decode
   it, and see the :pep:`511` for the rationale.
 
 * The functions in the :mod:`compileall` module now return booleans instead
@@ -2185,7 +2186,7 @@ Changes in the Python API
 
 * The following modules have had missing APIs added to their :attr:`__all__`
   attributes to match the documented APIs:
-  :mod:`calendar`, :mod:`cgi`, :mod:`csv`,
+  :mod:`calendar`, :mod:`!cgi`, :mod:`csv`,
   :mod:`~xml.etree.ElementTree`, :mod:`enum`,
   :mod:`fileinput`, :mod:`ftplib`, :mod:`logging`, :mod:`mailbox`,
   :mod:`mimetypes`, :mod:`optparse`, :mod:`plistlib`, :mod:`smtpd`,
@@ -2211,7 +2212,7 @@ Changes in the Python API
   the exception will stop a single-threaded server. (Contributed by
   Martin Panter in :issue:`23430`.)
 
-* :func:`spwd.getspnam` now raises a :exc:`PermissionError` instead of
+* :func:`!spwd.getspnam` now raises a :exc:`PermissionError` instead of
   :exc:`KeyError` if the user doesn't have privileges.
 
 * The :meth:`socket.socket.close` method now raises an exception if
@@ -2274,7 +2275,7 @@ Changes in the Python API
   :class:`~collections.OrderedDict`.
   (Contributed by Steve Holden in :issue:`27842`.)
 
-* The :const:`crypt.METHOD_CRYPT` will no longer be added to ``crypt.methods``
+* The :const:`!crypt.METHOD_CRYPT` will no longer be added to ``crypt.methods``
   if unsupported by the platform.
   (Contributed by Victor Stinner in :issue:`25287`.)
 
@@ -2455,7 +2456,7 @@ query parameter separators in :func:`urllib.parse.parse_qs` and
 :func:`urllib.parse.parse_qsl`.  Due to security concerns, and to conform with
 newer W3C recommendations, this has been changed to allow only a single
 separator key, with ``&`` as the default.  This change also affects
-:func:`cgi.parse` and :func:`cgi.parse_multipart` as they use the affected
+:func:`!cgi.parse` and :func:`!cgi.parse_multipart` as they use the affected
 functions internally. For more details, please see their respective
 documentation.
 (Contributed by Adam Goldschmidt, Senthil Kumaran and Ken Jin in :issue:`42967`.)
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index 28f22836d8d09e..7a74f9c1685c31 100644
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -848,10 +848,10 @@ alternative to script path.  (Contributed by Sanyam Khurana in :issue:`21862`.)
 crypt
 -----
 
-The :mod:`crypt` module now supports the Blowfish hashing method.
+The :mod:`!crypt` module now supports the Blowfish hashing method.
 (Contributed by Serhiy Storchaka in :issue:`31664`.)
 
-The :func:`~crypt.mksalt` function now allows specifying the number of rounds
+The :func:`~!crypt.mksalt` function now allows specifying the number of rounds
 for hashing.  (Contributed by Serhiy Storchaka in :issue:`31702`.)
 
 
@@ -1133,7 +1133,7 @@ The MIME type of .bmp has been changed from ``'image/x-ms-bmp'`` to
 msilib
 ------
 
-The new :meth:`Database.Close() <msilib.Database.Close>` method can be used
+The new :meth:`!Database.Close()` method can be used
 to close the :abbr:`MSI` database.
 (Contributed by Berker Peksag in :issue:`20486`.)
 
@@ -1280,13 +1280,13 @@ This function should be used instead of :func:`os.close` for better
 compatibility across platforms.
 (Contributed by Christian Heimes in :issue:`32454`.)
 
-The :mod:`socket` module now exposes the :data:`socket.TCP_CONGESTION`
-(Linux 2.6.13), :data:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37), and
-:data:`socket.TCP_NOTSENT_LOWAT` (Linux 3.12) constants.
+The :mod:`socket` module now exposes the :const:`socket.TCP_CONGESTION`
+(Linux 2.6.13), :const:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37), and
+:const:`socket.TCP_NOTSENT_LOWAT` (Linux 3.12) constants.
 (Contributed by Omar Sandoval in :issue:`26273` and
 Nathaniel J. Smith in :issue:`29728`.)
 
-Support for :data:`socket.AF_VSOCK` sockets has been added to allow
+Support for :const:`socket.AF_VSOCK` sockets has been added to allow
 communication between virtual machines and their hosts.
 (Contributed by Cathy Avery in :issue:`27584`.)
 
@@ -1394,7 +1394,7 @@ subprocess
 
 The :func:`subprocess.run` function accepts the new *capture_output*
 keyword argument.  When true, stdout and stderr will be captured.
-This is equivalent to passing :data:`subprocess.PIPE` as *stdout* and
+This is equivalent to passing :const:`subprocess.PIPE` as *stdout* and
 *stderr* arguments.
 (Contributed by Bo Bayles in :issue:`32102`.)
 
@@ -1453,12 +1453,12 @@ time
 
 New clock identifiers have been added:
 
-* :data:`time.CLOCK_BOOTTIME` (Linux): Identical to
-  :data:`time.CLOCK_MONOTONIC`, except it also includes any time that the
+* :const:`time.CLOCK_BOOTTIME` (Linux): Identical to
+  :const:`time.CLOCK_MONOTONIC`, except it also includes any time that the
   system is suspended.
-* :data:`time.CLOCK_PROF` (FreeBSD, NetBSD and OpenBSD): High-resolution
+* :const:`time.CLOCK_PROF` (FreeBSD, NetBSD and OpenBSD): High-resolution
   per-process CPU timer.
-* :data:`time.CLOCK_UPTIME` (FreeBSD, OpenBSD): Time whose absolute value is
+* :const:`time.CLOCK_UPTIME` (FreeBSD, OpenBSD): Time whose absolute value is
   the time the system has been running and not suspended, providing accurate
   uptime measurement.
 
@@ -1547,7 +1547,7 @@ adding ``~`` to the set of characters that are never quoted by default.
 uu
 --
 
-The :func:`uu.encode` function now accepts an optional *backtick*
+The :func:`!uu.encode` function now accepts an optional *backtick*
 keyword argument.  When it's true, zeros are represented by ``'`'``
 instead of spaces.  (Contributed by Xiang Zhang in :issue:`30103`.)
 
@@ -1580,13 +1580,13 @@ The initialization of the default warnings filters has changed as follows:
 * warnings filters enabled via the command line or the environment now have the
   following order of precedence:
 
-     * the ``BytesWarning`` filter for :option:`-b` (or ``-bb``)
-     * any filters specified with the :option:`-W` option
-     * any filters specified with the :envvar:`PYTHONWARNINGS` environment
-       variable
-     * any other CPython specific filters (e.g. the ``default`` filter added
-       for the new ``-X dev`` mode)
-     * any implicit filters defined directly by the warnings machinery
+  * the ``BytesWarning`` filter for :option:`-b` (or ``-bb``)
+  * any filters specified with the :option:`-W` option
+  * any filters specified with the :envvar:`PYTHONWARNINGS` environment
+    variable
+  * any other CPython specific filters (e.g. the ``default`` filter added
+    for the new ``-X dev`` mode)
+  * any implicit filters defined directly by the warnings machinery
 
 * in :ref:`CPython debug builds <debug-build>`, all warnings are now displayed
   by default (the implicit filter list is empty)
@@ -1674,10 +1674,10 @@ The new :c:func:`import__find__load__start` and
 module imports.
 (Contributed by Christian Heimes in :issue:`31574`.)
 
-The fields :c:member:`name` and :c:member:`doc` of structures
+The fields :c:member:`!name` and :c:member:`!doc` of structures
 :c:type:`PyMemberDef`, :c:type:`PyGetSetDef`,
 :c:type:`PyStructSequence_Field`, :c:type:`PyStructSequence_Desc`,
-and :c:type:`wrapperbase` are now of type ``const char *`` rather of
+and :c:struct:`wrapperbase` are now of type ``const char *`` rather of
 ``char *``.  (Contributed by Serhiy Storchaka in :issue:`28761`.)
 
 The result of :c:func:`PyUnicode_AsUTF8AndSize` and :c:func:`PyUnicode_AsUTF8`
@@ -1891,7 +1891,7 @@ Other CPython Implementation Changes
 
 * Trace hooks may now opt out of receiving the ``line`` and opt into receiving
   the ``opcode`` events from the interpreter by setting the corresponding new
-  ``f_trace_lines`` and ``f_trace_opcodes`` attributes on the
+  :attr:`~frame.f_trace_lines` and :attr:`~frame.f_trace_opcodes` attributes on the
   frame being traced. (Contributed by Nick Coghlan in :issue:`31344`.)
 
 * Fixed some consistency problems with namespace package module attributes.
@@ -1940,8 +1940,8 @@ Deprecated Python modules, functions and methods
 aifc
 ----
 
-:func:`aifc.openfp` has been deprecated and will be removed in Python 3.9.
-Use :func:`aifc.open` instead.
+:func:`!aifc.openfp` has been deprecated and will be removed in Python 3.9.
+Use :func:`!aifc.open` instead.
 (Contributed by Brian Curtin in :issue:`31985`.)
 
 
@@ -2061,8 +2061,8 @@ ssl
 sunau
 -----
 
-:func:`sunau.openfp` has been deprecated and will be removed in Python 3.9.
-Use :func:`sunau.open` instead.
+:func:`!sunau.openfp` has been deprecated and will be removed in Python 3.9.
+Use :func:`!sunau.open` instead.
 (Contributed by Brian Curtin in :issue:`31985`.)
 
 
@@ -2144,9 +2144,9 @@ The following features and APIs have been removed from Python 3.7:
 * Removed support of the *exclude* argument in :meth:`tarfile.TarFile.add`.
   It was deprecated in Python 2.7 and 3.2.  Use the *filter* argument instead.
 
-* The ``splitunc()`` function in the :mod:`ntpath` module was deprecated in
-  Python 3.1, and has now been removed.  Use the :func:`~os.path.splitdrive`
-  function instead.
+* The :func:`!ntpath.splitunc` function was deprecated in
+  Python 3.1, and has now been removed.  Use :func:`~os.path.splitdrive`
+  instead.
 
 * :func:`collections.namedtuple` no longer supports the *verbose* parameter
   or ``_source`` attribute which showed the generated source code for the
@@ -2495,12 +2495,12 @@ either in embedding applications, or in CPython itself.
 :issue:`22257`, and further updated by Nick, Eric, and Victor Stinner in a
 number of other issues). Some known details affected:
 
-* :c:func:`PySys_AddWarnOptionUnicode` is not currently usable by embedding
+* :c:func:`!PySys_AddWarnOptionUnicode` is not currently usable by embedding
   applications due to the requirement to create a Unicode object prior to
-  calling ``Py_Initialize``. Use :c:func:`PySys_AddWarnOption` instead.
+  calling ``Py_Initialize``. Use :c:func:`!PySys_AddWarnOption` instead.
 
 * warnings filters added by an embedding application with
-  :c:func:`PySys_AddWarnOption` should now more consistently take precedence
+  :c:func:`!PySys_AddWarnOption` should now more consistently take precedence
   over the default filters set by the interpreter
 
 Due to changes in the way the default warnings filters are configured,
@@ -2567,7 +2567,7 @@ query parameter separators in :func:`urllib.parse.parse_qs` and
 :func:`urllib.parse.parse_qsl`.  Due to security concerns, and to conform with
 newer W3C recommendations, this has been changed to allow only a single
 separator key, with ``&`` as the default.  This change also affects
-:func:`cgi.parse` and :func:`cgi.parse_multipart` as they use the affected
+:func:`!cgi.parse` and :func:`!cgi.parse_multipart` as they use the affected
 functions internally. For more details, please see their respective
 documentation.
 (Contributed by Adam Goldschmidt, Senthil Kumaran and Ken Jin in :issue:`42967`.)
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst
index 85e088b64acb2d..4574702b1a600f 100644
--- a/Doc/whatsnew/3.8.rst
+++ b/Doc/whatsnew/3.8.rst
@@ -123,7 +123,7 @@ There is a new function parameter syntax ``/`` to indicate that some
 function parameters must be specified positionally and cannot be used as
 keyword arguments.  This is the same notation shown by ``help()`` for C
 functions annotated with Larry Hastings'
-:ref:`Argument Clinic <howto-clinic>` tool.
+`Argument Clinic <devguide.python.org/development-tools/clinic/>`__ tool.
 
 In the following example, parameters *a* and *b* are positional-only,
 while *c* or *d* can be positional or keyword, and *e* or *f* are
@@ -404,7 +404,7 @@ Other Language Changes
   or :meth:`~object.__complex__` is not available.
   (Contributed by Serhiy Storchaka in :issue:`20092`.)
 
-* Added support of ``\N{name}`` escapes in :mod:`regular expressions <re>`::
+* Added support of :samp:`\\N\\{{name}\\}` escapes in :mod:`regular expressions <re>`::
 
     >>> notice = 'Copyright © 2019'
     >>> copyright_year_pattern = re.compile(r'\N{copyright sign}\s*(\d{4})')
@@ -947,7 +947,7 @@ This made it difficult to update, experiment with, or teach the various
 logging configuration options using the interactive prompt or a Jupyter
 notebook.
 
-(Suggested by Raymond Hettinger, implemented by Dong-hee Na, and
+(Suggested by Raymond Hettinger, implemented by Donghee Na, and
 reviewed by Vinay Sajip in :issue:`33897`.)
 
 
@@ -1305,7 +1305,7 @@ Zackery Spytz in :issue:`25451`.)
 time
 ----
 
-Added new clock :data:`~time.CLOCK_UPTIME_RAW` for macOS 10.12.
+Added new clock :const:`~time.CLOCK_UPTIME_RAW` for macOS 10.12.
 (Contributed by Joannah Nanjekye in :issue:`35702`.)
 
 
@@ -1574,12 +1574,12 @@ Build and C API Changes
   * :c:func:`Py_INCREF`, :c:func:`Py_DECREF`
   * :c:func:`Py_XINCREF`, :c:func:`Py_XDECREF`
   * :c:func:`PyObject_INIT`, :c:func:`PyObject_INIT_VAR`
-  * Private functions: :c:func:`_PyObject_GC_TRACK`,
-    :c:func:`_PyObject_GC_UNTRACK`, :c:func:`_Py_Dealloc`
+  * Private functions: :c:func:`!_PyObject_GC_TRACK`,
+    :c:func:`!_PyObject_GC_UNTRACK`, :c:func:`!_Py_Dealloc`
 
   (Contributed by Victor Stinner in :issue:`35059`.)
 
-* The :c:func:`PyByteArray_Init` and :c:func:`PyByteArray_Fini` functions have
+* The :c:func:`!PyByteArray_Init` and :c:func:`!PyByteArray_Fini` functions have
   been removed. They did nothing since Python 2.7.4 and Python 3.2.0, were
   excluded from the limited API (stable ABI), and were not documented.
   (Contributed by Victor Stinner in :issue:`35713`.)
@@ -1628,7 +1628,7 @@ Build and C API Changes
   parameter for indicating the number of positional-only arguments.
   (Contributed by Pablo Galindo in :issue:`37221`.)
 
-* :c:func:`Py_SetPath` now sets :data:`sys.executable` to the program full
+* :c:func:`!Py_SetPath` now sets :data:`sys.executable` to the program full
   path (:c:func:`Py_GetProgramFullPath`) rather than to the program name
   (:c:func:`Py_GetProgramName`).
   (Contributed by Victor Stinner in :issue:`38234`.)
@@ -1653,7 +1653,7 @@ Deprecated
   deprecated and will be prohibited in Python 3.9.
   (Contributed by Elvis Pranskevichus in :issue:`34075`.)
 
-* The :meth:`__getitem__` methods of :class:`xml.dom.pulldom.DOMEventStream`,
+* The :meth:`~object.__getitem__` methods of :class:`xml.dom.pulldom.DOMEventStream`,
   :class:`wsgiref.util.FileWrapper` and :class:`fileinput.FileInput` have been
   deprecated.
 
@@ -1714,7 +1714,7 @@ Deprecated
 
 * The :meth:`~threading.Thread.isAlive()` method of :class:`threading.Thread`
   has been deprecated.
-  (Contributed by Dong-hee Na in :issue:`35283`.)
+  (Contributed by Donghee Na in :issue:`35283`.)
 
 * Many builtin and extension functions that take integer arguments will
   now emit a deprecation warning for :class:`~decimal.Decimal`\ s,
@@ -1774,7 +1774,7 @@ The following features and APIs have been removed from Python 3.8:
   to help eliminate confusion as to what Python interpreter the ``pyvenv``
   script is tied to. (Contributed by Brett Cannon in :issue:`25427`.)
 
-* ``parse_qs``, ``parse_qsl``, and ``escape`` are removed from the :mod:`cgi`
+* ``parse_qs``, ``parse_qsl``, and ``escape`` are removed from the :mod:`!cgi`
   module.  They are deprecated in Python 3.2 or older. They should be imported
   from the ``urllib.parse`` and ``html`` modules instead.
 
@@ -1839,18 +1839,18 @@ Changes in Python behavior
   classes will affect their string representation.
   (Contributed by Serhiy Storchaka in :issue:`36793`.)
 
-* On AIX, :attr:`sys.platform` doesn't contain the major version anymore.
+* On AIX, :data:`sys.platform` doesn't contain the major version anymore.
   It is always ``'aix'``, instead of ``'aix3'`` .. ``'aix7'``.  Since
   older Python versions include the version number, so it is recommended to
   always use ``sys.platform.startswith('aix')``.
   (Contributed by M. Felt in :issue:`36588`.)
 
-* :c:func:`PyEval_AcquireLock` and :c:func:`PyEval_AcquireThread` now
+* :c:func:`!PyEval_AcquireLock` and :c:func:`!PyEval_AcquireThread` now
   terminate the current thread if called while the interpreter is
   finalizing, making them consistent with :c:func:`PyEval_RestoreThread`,
   :c:func:`Py_END_ALLOW_THREADS`, and :c:func:`PyGILState_Ensure`. If this
-  behavior is not desired, guard the call by checking :c:func:`_Py_IsFinalizing`
-  or :c:func:`sys.is_finalizing`.
+  behavior is not desired, guard the call by checking :c:func:`!_Py_IsFinalizing`
+  or :func:`sys.is_finalizing`.
   (Contributed by Joannah Nanjekye in :issue:`36475`.)
 
 
@@ -2021,7 +2021,7 @@ Changes in the C API
   *cf_flags*.
   (Contributed by Guido van Rossum in :issue:`35766`.)
 
-* The :c:func:`PyEval_ReInitThreads` function has been removed from the C API.
+* The :c:func:`!PyEval_ReInitThreads` function has been removed from the C API.
   It should not be called explicitly: use :c:func:`PyOS_AfterFork_Child`
   instead.
   (Contributed by Victor Stinner in :issue:`36728`.)
@@ -2061,8 +2061,8 @@ Changes in the C API
 
   * Remove :c:macro:`Py_INCREF` on the type object after allocating an
     instance - if any.
-    This may happen after calling :c:func:`PyObject_New`,
-    :c:func:`PyObject_NewVar`, :c:func:`PyObject_GC_New`,
+    This may happen after calling :c:macro:`PyObject_New`,
+    :c:macro:`PyObject_NewVar`, :c:func:`PyObject_GC_New`,
     :c:func:`PyObject_GC_NewVar`, or any other custom allocator that uses
     :c:func:`PyObject_Init` or :c:func:`PyObject_INIT`.
 
@@ -2116,12 +2116,12 @@ Changes in the C API
   extension types across feature releases, anymore.  A :c:type:`PyTypeObject`
   exported by a third-party extension module is supposed to have all the
   slots expected in the current Python version, including
-  :c:member:`~PyTypeObject.tp_finalize` (:const:`Py_TPFLAGS_HAVE_FINALIZE`
+  :c:member:`~PyTypeObject.tp_finalize` (:c:macro:`Py_TPFLAGS_HAVE_FINALIZE`
   is not checked anymore before reading :c:member:`~PyTypeObject.tp_finalize`).
 
   (Contributed by Antoine Pitrou in :issue:`32388`.)
 
-* The functions :c:func:`PyNode_AddChild` and :c:func:`PyParser_AddToken` now accept
+* The functions :c:func:`!PyNode_AddChild` and :c:func:`!PyParser_AddToken` now accept
   two additional ``int`` arguments *end_lineno* and *end_col_offset*.
 
 * The :file:`libpython38.a` file to allow MinGW tools to link directly against
@@ -2251,7 +2251,7 @@ query parameter separators in :func:`urllib.parse.parse_qs` and
 :func:`urllib.parse.parse_qsl`.  Due to security concerns, and to conform with
 newer W3C recommendations, this has been changed to allow only a single
 separator key, with ``&`` as the default.  This change also affects
-:func:`cgi.parse` and :func:`cgi.parse_multipart` as they use the affected
+:func:`!cgi.parse` and :func:`!cgi.parse_multipart` as they use the affected
 functions internally. For more details, please see their respective
 documentation.
 (Contributed by Adam Goldschmidt, Senthil Kumaran and Ken Jin in :issue:`42967`.)
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index fd86db96302356..cb2482ee48d7fa 100644
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -44,7 +44,6 @@
 
 This article explains the new features in Python 3.9, compared to 3.8.
 Python 3.9 was released on October 5, 2020.
-
 For full details, see the :ref:`changelog <changelog>`.
 
 .. seealso::
@@ -82,12 +81,12 @@ Interpreter improvements:
 * a number of Python builtins (range, tuple, set, frozenset, list, dict) are
   now sped up using :pep:`590` vectorcall;
 * garbage collection does not block on resurrected objects;
-* a number of Python modules (:mod:`_abc`, :mod:`audioop`, :mod:`_bz2`,
-  :mod:`_codecs`, :mod:`_contextvars`, :mod:`_crypt`, :mod:`_functools`,
+* a number of Python modules (:mod:`_abc`, :mod:`!audioop`, :mod:`_bz2`,
+  :mod:`_codecs`, :mod:`_contextvars`, :mod:`!_crypt`, :mod:`_functools`,
   :mod:`_json`, :mod:`_locale`, :mod:`math`, :mod:`operator`, :mod:`resource`,
   :mod:`time`, :mod:`_weakref`) now use multiphase initialization as defined
   by PEP 489;
-* a number of standard library modules (:mod:`audioop`, :mod:`ast`, :mod:`grp`,
+* a number of standard library modules (:mod:`!audioop`, :mod:`ast`, :mod:`grp`,
   :mod:`_hashlib`, :mod:`pwd`, :mod:`_posixsubprocess`, :mod:`random`,
   :mod:`select`, :mod:`struct`, :mod:`termios`, :mod:`zlib`) are now using
   the stable ABI defined by PEP 384.
@@ -415,7 +414,7 @@ datetime
 The :meth:`~datetime.date.isocalendar()` of :class:`datetime.date`
 and :meth:`~datetime.datetime.isocalendar()` of :class:`datetime.datetime`
 methods now returns a :func:`~collections.namedtuple` instead of a :class:`tuple`.
-(Contributed by Dong-hee Na in :issue:`24416`.)
+(Contributed by Donghee Na in :issue:`24416`.)
 
 distutils
 ---------
@@ -427,16 +426,16 @@ digests. It skips MD5 on platforms that block MD5 digest.
 fcntl
 -----
 
-Added constants :data:`~fcntl.F_OFD_GETLK`, :data:`~fcntl.F_OFD_SETLK`
-and :data:`~fcntl.F_OFD_SETLKW`.
-(Contributed by Dong-hee Na in :issue:`38602`.)
+Added constants :const:`~fcntl.F_OFD_GETLK`, :const:`~fcntl.F_OFD_SETLK`
+and :const:`~fcntl.F_OFD_SETLKW`.
+(Contributed by Donghee Na in :issue:`38602`.)
 
 ftplib
 -------
 
 :class:`~ftplib.FTP` and :class:`~ftplib.FTP_TLS` now raise a :class:`ValueError`
 if the given timeout for their constructor is zero to prevent the creation of
-a non-blocking socket. (Contributed by Dong-hee Na in :issue:`39259`.)
+a non-blocking socket. (Contributed by Donghee Na in :issue:`39259`.)
 
 gc
 --
@@ -468,7 +467,7 @@ http
 ----
 
 HTTP status codes ``103 EARLY_HINTS``, ``418 IM_A_TEAPOT`` and ``425 TOO_EARLY`` are added to
-:class:`http.HTTPStatus`. (Contributed by Dong-hee Na in :issue:`39509` and Ross Rhodes in :issue:`39507`.)
+:class:`http.HTTPStatus`. (Contributed by Donghee Na in :issue:`39509` and Ross Rhodes in :issue:`39507`.)
 
 IDLE and idlelib
 ----------------
@@ -509,14 +508,14 @@ an optional *timeout* parameter for their constructors.
 Also, the :meth:`~imaplib.IMAP4.open` method now has an optional *timeout* parameter
 with this change. The overridden methods of :class:`~imaplib.IMAP4_SSL` and
 :class:`~imaplib.IMAP4_stream` were applied to this change.
-(Contributed by Dong-hee Na in :issue:`38615`.)
+(Contributed by Donghee Na in :issue:`38615`.)
 
 :meth:`imaplib.IMAP4.unselect` is added.
 :meth:`imaplib.IMAP4.unselect` frees server's resources associated with the
 selected mailbox and returns the server to the authenticated
 state. This command performs the same actions as :meth:`imaplib.IMAP4.close`, except
 that no messages are permanently removed from the currently
-selected mailbox. (Contributed by Dong-hee Na in :issue:`40375`.)
+selected mailbox. (Contributed by Donghee Na in :issue:`40375`.)
 
 importlib
 ---------
@@ -586,18 +585,18 @@ queue.
 nntplib
 -------
 
-:class:`~nntplib.NNTP` and :class:`~nntplib.NNTP_SSL` now raise a :class:`ValueError`
+:class:`~!nntplib.NNTP` and :class:`~!nntplib.NNTP_SSL` now raise a :class:`ValueError`
 if the given timeout for their constructor is zero to prevent the creation of
-a non-blocking socket. (Contributed by Dong-hee Na in :issue:`39259`.)
+a non-blocking socket. (Contributed by Donghee Na in :issue:`39259`.)
 
 os
 --
 
-Added :data:`~os.CLD_KILLED` and :data:`~os.CLD_STOPPED` for :attr:`si_code`.
-(Contributed by Dong-hee Na in :issue:`38493`.)
+Added :const:`~os.CLD_KILLED` and :const:`~os.CLD_STOPPED` for :attr:`si_code`.
+(Contributed by Donghee Na in :issue:`38493`.)
 
 Exposed the Linux-specific :func:`os.pidfd_open` (:issue:`38692`) and
-:data:`os.P_PIDFD` (:issue:`38713`) for process management with file
+:const:`os.P_PIDFD` (:issue:`38713`) for process management with file
 descriptors.
 
 The :func:`os.unsetenv` function is now also available on Windows.
@@ -629,7 +628,7 @@ poplib
 
 :class:`~poplib.POP3` and :class:`~poplib.POP3_SSL` now raise a :class:`ValueError`
 if the given timeout for their constructor is zero to prevent the creation of
-a non-blocking socket. (Contributed by Dong-hee Na in :issue:`39259`.)
+a non-blocking socket. (Contributed by Donghee Na in :issue:`39259`.)
 
 pprint
 ------
@@ -661,19 +660,19 @@ smtplib
 
 :class:`~smtplib.SMTP` and :class:`~smtplib.SMTP_SSL` now raise a :class:`ValueError`
 if the given timeout for their constructor is zero to prevent the creation of
-a non-blocking socket. (Contributed by Dong-hee Na in :issue:`39259`.)
+a non-blocking socket. (Contributed by Donghee Na in :issue:`39259`.)
 
 :class:`~smtplib.LMTP` constructor  now has an optional *timeout* parameter.
-(Contributed by Dong-hee Na in :issue:`39329`.)
+(Contributed by Donghee Na in :issue:`39329`.)
 
 socket
 ------
 
-The :mod:`socket` module now exports the :data:`~socket.CAN_RAW_JOIN_FILTERS`
+The :mod:`socket` module now exports the :const:`~socket.CAN_RAW_JOIN_FILTERS`
 constant on Linux 4.1 and greater.
 (Contributed by Stefan Tatschner and Zackery Spytz in :issue:`25780`.)
 
-The socket module now supports the :data:`~socket.CAN_J1939` protocol on
+The socket module now supports the :const:`~socket.CAN_J1939` protocol on
 platforms that support it.  (Contributed by Karl Ding in :issue:`40291`.)
 
 The socket module now has the :func:`socket.send_fds` and
@@ -692,13 +691,13 @@ which has nanosecond resolution, rather than
 sys
 ---
 
-Added a new :attr:`sys.platlibdir` attribute: name of the platform-specific
+Added a new :data:`sys.platlibdir` attribute: name of the platform-specific
 library directory. It is used to build the path of standard library and the
 paths of installed extension modules. It is equal to ``"lib"`` on most
 platforms.  On Fedora and SuSE, it is equal to ``"lib64"`` on 64-bit platforms.
 (Contributed by Jan Matějek, Matěj Cepl, Charalampos Stratakis and Victor Stinner in :issue:`1294959`.)
 
-Previously, :attr:`sys.stderr` was block-buffered when non-interactive. Now
+Previously, :data:`sys.stderr` was block-buffered when non-interactive. Now
 ``stderr`` defaults to always being line-buffered.
 (Contributed by Jendrik Seipp in :issue:`13601`.)
 
@@ -777,7 +776,7 @@ Optimizations
 * A number of Python builtins (:class:`range`, :class:`tuple`, :class:`set`,
   :class:`frozenset`, :class:`list`, :class:`dict`) are now sped up by using
   :pep:`590` vectorcall protocol.
-  (Contributed by Dong-hee Na, Mark Shannon, Jeroen Demeyer and Petr Viktorin in :issue:`37207`.)
+  (Contributed by Donghee Na, Mark Shannon, Jeroen Demeyer and Petr Viktorin in :issue:`37207`.)
 
 * Optimized :func:`~set.difference_update` for the case when the other set
   is much larger than the base set.
@@ -791,7 +790,7 @@ Optimizations
 
 * :term:`floor division` of float operation now has a better performance. Also
   the message of :exc:`ZeroDivisionError` for this operation is updated.
-  (Contributed by Dong-hee Na in :issue:`39434`.)
+  (Contributed by Donghee Na in :issue:`39434`.)
 
 * Decoding short ASCII strings with UTF-8 and ascii codecs is now about
   15% faster.  (Contributed by Inada Naoki in :issue:`37348`.)
@@ -870,9 +869,9 @@ Deprecated
   users can leverage the Abstract Syntax Tree (AST) generation and compilation
   stage, using the :mod:`ast` module.
 
-* The Public C API functions :c:func:`PyParser_SimpleParseStringFlags`,
-  :c:func:`PyParser_SimpleParseStringFlagsFilename`,
-  :c:func:`PyParser_SimpleParseFileFlags` and :c:func:`PyNode_Compile`
+* The Public C API functions :c:func:`!PyParser_SimpleParseStringFlags`,
+  :c:func:`!PyParser_SimpleParseStringFlagsFilename`,
+  :c:func:`!PyParser_SimpleParseFileFlags` and :c:func:`!PyNode_Compile`
   are deprecated and will be removed in Python 3.10 together with the old parser.
 
 * Using :data:`NotImplemented` in a boolean context has been deprecated,
@@ -923,10 +922,10 @@ Deprecated
   (Contributed by Batuhan Taskaya in :issue:`39639` and :issue:`39969`
   and Serhiy Storchaka in :issue:`39988`.)
 
-* The :c:func:`PyEval_InitThreads` and :c:func:`PyEval_ThreadsInitialized`
+* The :c:func:`!PyEval_InitThreads` and :c:func:`!PyEval_ThreadsInitialized`
   functions are now deprecated and will be removed in Python 3.11. Calling
-  :c:func:`PyEval_InitThreads` now does nothing. The :term:`GIL` is initialized
-  by :c:func:`Py_Initialize()` since Python 3.7.
+  :c:func:`!PyEval_InitThreads` now does nothing. The :term:`GIL` is initialized
+  by :c:func:`Py_Initialize` since Python 3.7.
   (Contributed by Victor Stinner in :issue:`39877`.)
 
 * Passing ``None`` as the first argument to the :func:`shlex.split` function
@@ -935,10 +934,10 @@ Deprecated
 * :func:`smtpd.MailmanProxy` is now deprecated as it is unusable without
   an external module, ``mailman``.  (Contributed by Samuel Colvin in :issue:`35800`.)
 
-* The :mod:`lib2to3` module now emits a :exc:`PendingDeprecationWarning`.
+* The :mod:`!lib2to3` module now emits a :exc:`PendingDeprecationWarning`.
   Python 3.9 switched to a PEG parser (see :pep:`617`), and Python 3.10 may
   include new language syntax that is not parsable by lib2to3's LL(1) parser.
-  The ``lib2to3`` module may be removed from the standard library in a future
+  The :mod:`!lib2to3` module may be removed from the standard library in a future
   Python version. Consider third-party alternatives such as `LibCST`_ or
   `parso`_.
   (Contributed by Carl Meyer in :issue:`40360`.)
@@ -956,12 +955,12 @@ Removed
 
 * The erroneous version at :data:`unittest.mock.__version__` has been removed.
 
-* :class:`nntplib.NNTP`: ``xpath()`` and ``xgtitle()`` methods have been removed.
+* :class:`!nntplib.NNTP`: ``xpath()`` and ``xgtitle()`` methods have been removed.
   These methods are deprecated since Python 3.3. Generally, these extensions
   are not supported or not enabled by NNTP server administrators.
-  For ``xgtitle()``, please use :meth:`nntplib.NNTP.descriptions` or
-  :meth:`nntplib.NNTP.description` instead.
-  (Contributed by Dong-hee Na in :issue:`39366`.)
+  For ``xgtitle()``, please use :meth:`!nntplib.NNTP.descriptions` or
+  :meth:`!nntplib.NNTP.description` instead.
+  (Contributed by Donghee Na in :issue:`39366`.)
 
 * :class:`array.array`: ``tostring()`` and ``fromstring()`` methods have been
   removed. They were aliases to ``tobytes()`` and ``frombytes()``, deprecated
@@ -994,7 +993,7 @@ Removed
 * The :meth:`~threading.Thread.isAlive()` method of :class:`threading.Thread`
   has been removed. It was deprecated since Python 3.8.
   Use :meth:`~threading.Thread.is_alive()` instead.
-  (Contributed by Dong-hee Na in :issue:`37804`.)
+  (Contributed by Donghee Na in :issue:`37804`.)
 
 * Methods ``getchildren()`` and ``getiterator()`` of classes
   :class:`~xml.etree.ElementTree.ElementTree` and
@@ -1084,7 +1083,7 @@ Changes in the Python API
   ``__VENV_PROMPT__`` is set to ``""``.
 
 * The :meth:`select.epoll.unregister` method no longer ignores the
-  :data:`~errno.EBADF` error.
+  :const:`~errno.EBADF` error.
   (Contributed by Victor Stinner in :issue:`39239`.)
 
 * The *compresslevel* parameter of :class:`bz2.BZ2File` became keyword-only,
@@ -1115,9 +1114,9 @@ Changes in the Python API
   ``PyCF_ALLOW_TOP_LEVEL_AWAIT`` was clashing with ``CO_FUTURE_DIVISION``.
   (Contributed by Batuhan Taskaya in :issue:`39562`)
 
-* ``array('u')`` now uses ``wchar_t`` as C type instead of ``Py_UNICODE``.
+* ``array('u')`` now uses :c:type:`wchar_t` as C type instead of ``Py_UNICODE``.
   This change doesn't affect to its behavior because ``Py_UNICODE`` is alias
-  of ``wchar_t`` since Python 3.3.
+  of :c:type:`wchar_t` since Python 3.3.
   (Contributed by Inada Naoki in :issue:`34538`.)
 
 * The :func:`logging.getLogger` API now returns the root logger when passed
@@ -1226,8 +1225,8 @@ Build Changes
 =============
 
 * Added ``--with-platlibdir`` option to the ``configure`` script: name of the
-  platform-specific library directory, stored in the new :attr:`sys.platlibdir`
-  attribute. See :attr:`sys.platlibdir` attribute for more information.
+  platform-specific library directory, stored in the new :data:`sys.platlibdir`
+  attribute. See :data:`sys.platlibdir` attribute for more information.
   (Contributed by Jan Matějek, Matěj Cepl, Charalampos Stratakis
   and Victor Stinner in :issue:`1294959`.)
 
@@ -1276,7 +1275,7 @@ New Features
 * :pep:`573`: Added :c:func:`PyType_FromModuleAndSpec` to associate
   a module with a class; :c:func:`PyType_GetModule` and
   :c:func:`PyType_GetModuleState` to retrieve the module and its state; and
-  :c:data:`PyCMethod` and :c:data:`METH_METHOD` to allow a method to
+  :c:type:`PyCMethod` and :c:macro:`METH_METHOD` to allow a method to
   access the class it was defined in.
   (Contributed by Marcel Plch and Petr Viktorin in :issue:`38787`.)
 
@@ -1315,7 +1314,7 @@ New Features
 
 * The :c:func:`PyModule_AddType` function is added to help adding a type
   to a module.
-  (Contributed by Dong-hee Na in :issue:`40024`.)
+  (Contributed by Donghee Na in :issue:`40024`.)
 
 * Added the functions :c:func:`PyObject_GC_IsTracked` and
   :c:func:`PyObject_GC_IsFinalized` to the public API to allow to query if
@@ -1370,8 +1369,8 @@ Porting to Python 3.9
   (Contributed by Victor Stinner in :issue:`40241`.)
 
 * The ``Py_UNICODE_COPY``, ``Py_UNICODE_FILL``, ``PyUnicode_WSTR_LENGTH``,
-  :c:func:`PyUnicode_FromUnicode`, :c:func:`PyUnicode_AsUnicode`,
-  ``_PyUnicode_AsUnicode``, and :c:func:`PyUnicode_AsUnicodeAndSize` are
+  :c:func:`!PyUnicode_FromUnicode`, :c:func:`!PyUnicode_AsUnicode`,
+  ``_PyUnicode_AsUnicode``, and :c:func:`!PyUnicode_AsUnicodeAndSize` are
   marked as deprecated in C.  They have been deprecated by :pep:`393` since
   Python 3.3.
   (Contributed by Inada Naoki in :issue:`36346`.)
@@ -1389,8 +1388,8 @@ Porting to Python 3.9
   * :c:func:`PyObject_IS_GC` macro was converted to a function.
 
   * The :c:func:`PyObject_NEW` macro becomes an alias to the
-    :c:func:`PyObject_New` macro, and the :c:func:`PyObject_NEW_VAR` macro
-    becomes an alias to the :c:func:`PyObject_NewVar` macro. They no longer
+    :c:macro:`PyObject_New` macro, and the :c:func:`PyObject_NEW_VAR` macro
+    becomes an alias to the :c:macro:`PyObject_NewVar` macro. They no longer
     access directly the :c:member:`PyTypeObject.tp_basicsize` member.
 
   * :c:func:`PyObject_GET_WEAKREFS_LISTPTR` macro was converted to a function:
@@ -1559,7 +1558,7 @@ query parameter separators in :func:`urllib.parse.parse_qs` and
 :func:`urllib.parse.parse_qsl`.  Due to security concerns, and to conform with
 newer W3C recommendations, this has been changed to allow only a single
 separator key, with ``&`` as the default.  This change also affects
-:func:`cgi.parse` and :func:`cgi.parse_multipart` as they use the affected
+:func:`!cgi.parse` and :func:`!cgi.parse_multipart` as they use the affected
 functions internally. For more details, please see their respective
 documentation.
 (Contributed by Adam Goldschmidt, Senthil Kumaran and Ken Jin in :issue:`42967`.)
diff --git a/Doc/whatsnew/index.rst b/Doc/whatsnew/index.rst
index bfee225791eee9..b9c19602653219 100644
--- a/Doc/whatsnew/index.rst
+++ b/Doc/whatsnew/index.rst
@@ -11,6 +11,7 @@ anyone wishing to stay up-to-date after a new release.
 .. toctree::
    :maxdepth: 2
 
+   3.13.rst
    3.12.rst
    3.11.rst
    3.10.rst
diff --git a/Grammar/Tokens b/Grammar/Tokens
index 096876fdd130f8..20bb803b7d58a6 100644
--- a/Grammar/Tokens
+++ b/Grammar/Tokens
@@ -56,17 +56,15 @@ COLONEQUAL              ':='
 EXCLAMATION             '!'
 
 OP
-AWAIT
-ASYNC
 TYPE_IGNORE
 TYPE_COMMENT
 SOFT_KEYWORD
 FSTRING_START
 FSTRING_MIDDLE
 FSTRING_END
+COMMENT
+NL
 ERRORTOKEN
 
 # These aren't used by the C tokenizer but are needed for tokenize.py
-COMMENT
-NL
 ENCODING
diff --git a/Grammar/python.gram b/Grammar/python.gram
index 6361dcd0985b99..c9269b058bc7f6 100644
--- a/Grammar/python.gram
+++ b/Grammar/python.gram
@@ -19,8 +19,6 @@ _PyPegen_parse(Parser *p)
         result = eval_rule(p);
     } else if (p->start_rule == Py_func_type_input) {
         result = func_type_rule(p);
-    } else if (p->start_rule == Py_fstring_input) {
-        result = fstring_rule(p);
     }
 
     return result;
@@ -89,7 +87,6 @@ file[mod_ty]: a=[statements] ENDMARKER { _PyPegen_make_module(p, a) }
 interactive[mod_ty]: a=statement_newline { _PyAST_Interactive(a, p->arena) }
 eval[mod_ty]: a=expressions NEWLINE* ENDMARKER { _PyAST_Expression(a, p->arena) }
 func_type[mod_ty]: '(' a=[type_expressions] ')' '->' b=expression NEWLINE* ENDMARKER { _PyAST_FunctionType(a, b, p->arena) }
-fstring[expr_ty]: star_expressions
 
 # GENERAL STATEMENTS
 # ==================
@@ -112,6 +109,7 @@ simple_stmts[asdl_stmt_seq*]:
 # will throw a SyntaxError.
 simple_stmt[stmt_ty] (memo):
     | assignment
+    | &"type" type_alias
     | e=star_expressions { _PyAST_Expr(e, EXTRA) }
     | &'return' return_stmt
     | &('import' | 'from') import_stmt
@@ -126,11 +124,12 @@ simple_stmt[stmt_ty] (memo):
     | &'nonlocal' nonlocal_stmt
 
 compound_stmt[stmt_ty]:
-    | &('def' | '@' | ASYNC) function_def
+    | invalid_compound_stmt
+    | &('def' | '@' | 'async') function_def
     | &'if' if_stmt
     | &('class' | '@') class_def
-    | &('with' | ASYNC) with_stmt
-    | &('for' | ASYNC) for_stmt
+    | &('with' | 'async') with_stmt
+    | &('for' | 'async') for_stmt
     | &'try' try_stmt
     | &'while' while_stmt
     | match_stmt
@@ -252,11 +251,11 @@ class_def[stmt_ty]:
 
 class_def_raw[stmt_ty]:
     | invalid_class_def_raw
-    | 'class' a=NAME b=['(' z=[arguments] ')' { z }] ':' c=block {
+    | 'class' a=NAME t=[type_params] b=['(' z=[arguments] ')' { z }] ':' c=block {
         _PyAST_ClassDef(a->v.Name.id,
                      (b) ? ((expr_ty) b)->v.Call.args : NULL,
                      (b) ? ((expr_ty) b)->v.Call.keywords : NULL,
-                     c, NULL, EXTRA) }
+                     c, NULL, t, EXTRA) }
 
 # Function definitions
 # --------------------
@@ -267,18 +266,18 @@ function_def[stmt_ty]:
 
 function_def_raw[stmt_ty]:
     | invalid_def_raw
-    | 'def' n=NAME &&'(' params=[params] ')' a=['->' z=expression { z }] &&':' tc=[func_type_comment] b=block {
+    | 'def' n=NAME t=[type_params] &&'(' params=[params] ')' a=['->' z=expression { z }] &&':' tc=[func_type_comment] b=block {
         _PyAST_FunctionDef(n->v.Name.id,
                         (params) ? params : CHECK(arguments_ty, _PyPegen_empty_arguments(p)),
-                        b, NULL, a, NEW_TYPE_COMMENT(p, tc), EXTRA) }
-    | ASYNC 'def' n=NAME &&'(' params=[params] ')' a=['->' z=expression { z }] &&':' tc=[func_type_comment] b=block {
+                        b, NULL, a, NEW_TYPE_COMMENT(p, tc), t, EXTRA) }
+    | 'async' 'def' n=NAME t=[type_params] &&'(' params=[params] ')' a=['->' z=expression { z }] &&':' tc=[func_type_comment] b=block {
         CHECK_VERSION(
             stmt_ty,
             5,
             "Async functions are",
             _PyAST_AsyncFunctionDef(n->v.Name.id,
                             (params) ? params : CHECK(arguments_ty, _PyPegen_empty_arguments(p)),
-                            b, NULL, a, NEW_TYPE_COMMENT(p, tc), EXTRA)
+                            b, NULL, a, NEW_TYPE_COMMENT(p, tc), t, EXTRA)
         ) }
 
 # Function parameters
@@ -384,7 +383,7 @@ for_stmt[stmt_ty]:
     | invalid_for_stmt
     | 'for' t=star_targets 'in' ~ ex=star_expressions ':' tc=[TYPE_COMMENT] b=block el=[else_block] {
         _PyAST_For(t, ex, b, el, NEW_TYPE_COMMENT(p, tc), EXTRA) }
-    | ASYNC 'for' t=star_targets 'in' ~ ex=star_expressions ':' tc=[TYPE_COMMENT] b=block el=[else_block] {
+    | 'async' 'for' t=star_targets 'in' ~ ex=star_expressions ':' tc=[TYPE_COMMENT] b=block el=[else_block] {
         CHECK_VERSION(stmt_ty, 5, "Async for loops are", _PyAST_AsyncFor(t, ex, b, el, NEW_TYPE_COMMENT(p, tc), EXTRA)) }
     | invalid_for_target
 
@@ -393,13 +392,13 @@ for_stmt[stmt_ty]:
 
 with_stmt[stmt_ty]:
     | invalid_with_stmt_indent
-    | 'with' '(' a[asdl_withitem_seq*]=','.with_item+ ','? ')' ':' b=block {
-        CHECK_VERSION(stmt_ty, 9, "Parenthesized context managers are", _PyAST_With(a, b, NULL, EXTRA)) }
+    | 'with' '(' a[asdl_withitem_seq*]=','.with_item+ ','? ')' ':' tc=[TYPE_COMMENT] b=block {
+       CHECK_VERSION(stmt_ty, 9, "Parenthesized context managers are", _PyAST_With(a, b, NEW_TYPE_COMMENT(p, tc), EXTRA)) }
     | 'with' a[asdl_withitem_seq*]=','.with_item+ ':' tc=[TYPE_COMMENT] b=block {
         _PyAST_With(a, b, NEW_TYPE_COMMENT(p, tc), EXTRA) }
-    | ASYNC 'with' '(' a[asdl_withitem_seq*]=','.with_item+ ','? ')' ':' b=block {
+    | 'async' 'with' '(' a[asdl_withitem_seq*]=','.with_item+ ','? ')' ':' b=block {
        CHECK_VERSION(stmt_ty, 5, "Async with statements are", _PyAST_AsyncWith(a, b, NULL, EXTRA)) }
-    | ASYNC 'with' a[asdl_withitem_seq*]=','.with_item+ ':' tc=[TYPE_COMMENT] b=block {
+    | 'async' 'with' a[asdl_withitem_seq*]=','.with_item+ ':' tc=[TYPE_COMMENT] b=block {
        CHECK_VERSION(stmt_ty, 5, "Async with statements are", _PyAST_AsyncWith(a, b, NEW_TYPE_COMMENT(p, tc), EXTRA)) }
     | invalid_with_stmt
 
@@ -628,6 +627,39 @@ keyword_patterns[asdl_seq*]:
 keyword_pattern[KeyPatternPair*]:
     | arg=NAME '=' value=pattern { _PyPegen_key_pattern_pair(p, arg, value) }
 
+# Type statement
+# ---------------
+
+type_alias[stmt_ty]:
+    | "type" n=NAME t=[type_params] '=' b=expression {
+        CHECK_VERSION(stmt_ty, 12, "Type statement is",
+        _PyAST_TypeAlias(CHECK(expr_ty, _PyPegen_set_expr_context(p, n, Store)), t, b, EXTRA)) }
+
+# Type parameter declaration
+# --------------------------
+
+type_params[asdl_type_param_seq*]: '[' t=type_param_seq  ']' {
+        CHECK_VERSION(asdl_type_param_seq *, 12, "Type parameter lists are", t) }
+
+type_param_seq[asdl_type_param_seq*]: a[asdl_type_param_seq*]=','.type_param+ [','] { a }
+
+type_param[type_param_ty] (memo):
+    | a=NAME b=[type_param_bound] { _PyAST_TypeVar(a->v.Name.id, b, EXTRA) }
+    | '*' a=NAME colon=':' e=expression {
+            RAISE_SYNTAX_ERROR_STARTING_FROM(colon, e->kind == Tuple_kind
+                ? "cannot use constraints with TypeVarTuple"
+                : "cannot use bound with TypeVarTuple")
+        }
+    | '*' a=NAME { _PyAST_TypeVarTuple(a->v.Name.id, EXTRA) }
+    | '**' a=NAME colon=':' e=expression {
+            RAISE_SYNTAX_ERROR_STARTING_FROM(colon, e->kind == Tuple_kind
+                ? "cannot use constraints with ParamSpec"
+                : "cannot use bound with ParamSpec")
+        }
+    | '**' a=NAME { _PyAST_ParamSpec(a->v.Name.id, EXTRA) }
+
+type_param_bound[expr_ty]: ':' e=expression { e }
+
 # EXPRESSIONS
 # -----------
 
@@ -780,7 +812,7 @@ power[expr_ty]:
 # Primary elements are things like "obj.something.something", "obj[something]", "obj(something)", "obj" ...
 
 await_primary[expr_ty] (memo):
-    | AWAIT a=primary { CHECK_VERSION(expr_ty, 5, "Await expressions are", _PyAST_Await(a, EXTRA)) }
+    | 'await' a=primary { CHECK_VERSION(expr_ty, 5, "Await expressions are", _PyAST_Await(a, EXTRA)) }
     | primary
 
 primary[expr_ty]:
@@ -881,7 +913,7 @@ fstring_middle[expr_ty]:
     | fstring_replacement_field
     | t=FSTRING_MIDDLE { _PyPegen_constant_from_token(p, t) }
 fstring_replacement_field[expr_ty]:
-    | '{' a=(yield_expr | star_expressions) debug_expr="="? conversion=[fstring_conversion] format=[fstring_full_format_spec] rbrace='}' {
+    | '{' a=(yield_expr | star_expressions) debug_expr='='? conversion=[fstring_conversion] format=[fstring_full_format_spec] rbrace='}' {
         _PyPegen_formatted_value(p, a, debug_expr, conversion, format, rbrace, EXTRA) }
     | invalid_replacement_field
 fstring_conversion[ResultTokenWithMetadata*]:
@@ -889,7 +921,7 @@ fstring_conversion[ResultTokenWithMetadata*]:
 fstring_full_format_spec[ResultTokenWithMetadata*]:
     | colon=':' spec=fstring_format_spec* { _PyPegen_setup_full_format_spec(p, colon, (asdl_expr_seq *) spec, EXTRA) }
 fstring_format_spec[expr_ty]:
-    | t=FSTRING_MIDDLE { _PyPegen_constant_from_token(p, t) }
+    | t=FSTRING_MIDDLE { _PyPegen_decoded_constant_from_token(p, t) }
     | fstring_replacement_field
 fstring[expr_ty]:
     | a=FSTRING_START b=fstring_middle* c=FSTRING_END { _PyPegen_joined_str(p, a, (asdl_expr_seq*)b, c) }
@@ -932,7 +964,7 @@ for_if_clauses[asdl_comprehension_seq*]:
     | a[asdl_comprehension_seq*]=for_if_clause+ { a }
 
 for_if_clause[comprehension_ty]:
-    | ASYNC 'for' a=star_targets 'in' ~ b=disjunction c[asdl_expr_seq*]=('if' z=disjunction { z })* {
+    | 'async' 'for' a=star_targets 'in' ~ b=disjunction c[asdl_expr_seq*]=('if' z=disjunction { z })* {
         CHECK_VERSION(comprehension_ty, 6, "Async comprehensions are", _PyAST_comprehension(a, b, c, 1, p->arena)) }
     | 'for' a=star_targets 'in' ~ b=disjunction c[asdl_expr_seq*]=('if' z=disjunction { z })* {
         _PyAST_comprehension(a, b, c, 0, p->arena) }
@@ -1097,7 +1129,8 @@ func_type_comment[Token*]:
 
 # From here on, there are rules for invalid syntax with specialised error messages
 invalid_arguments:
-    | a=args ',' '*' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "iterable argument unpacking follows keyword argument unpacking") }
+    | ((','.(starred_expression | ( assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs) ',' b='*' {
+        RAISE_SYNTAX_ERROR_KNOWN_LOCATION(b, "iterable argument unpacking follows keyword argument unpacking") }
     | a=expression b=for_if_clauses ',' [args | expression for_if_clauses] {
         RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, _PyPegen_get_last_comprehension_item(PyPegen_last_item(b, comprehension_ty)), "Generator expression must be parenthesized") }
     | a=NAME b='=' expression for_if_clauses {
@@ -1136,7 +1169,7 @@ invalid_expression:
         _PyPegen_check_legacy_stmt(p, a) ? NULL : p->tokens[p->mark-1]->level == 0 ? NULL :
         RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Perhaps you forgot a comma?") }
    | a=disjunction 'if' b=disjunction !('else'|':') { RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "expected 'else' after 'if' expression") }
-   | a='lambda' [lambda_params] b=':' &(FSTRING_MIDDLE | fstring_replacement_field)  {
+   | a='lambda' [lambda_params] b=':' &FSTRING_MIDDLE  {
         RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "f-string: lambda expressions are not allowed without parentheses") }
 
 invalid_named_expression(memo):
@@ -1250,7 +1283,7 @@ invalid_with_item:
         RAISE_SYNTAX_ERROR_INVALID_TARGET(STAR_TARGETS, a) }
 
 invalid_for_target:
-    | ASYNC? 'for' a=star_expressions {
+    | 'async'? 'for' a=star_expressions {
         RAISE_SYNTAX_ERROR_INVALID_TARGET(FOR_TARGETS, a) }
 
 invalid_group:
@@ -1259,20 +1292,24 @@ invalid_group:
     | '(' a='**' expression ')' {
         RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "cannot use double starred expression here") }
 invalid_import:
-    | a='import' dotted_name 'from' dotted_name {
+    | a='import' ','.dotted_name+ 'from' dotted_name {
         RAISE_SYNTAX_ERROR_STARTING_FROM(a, "Did you mean to use 'from ... import ...' instead?") }
 
 invalid_import_from_targets:
     | import_from_as_names ',' NEWLINE {
         RAISE_SYNTAX_ERROR("trailing comma not allowed without surrounding parentheses") }
 
+invalid_compound_stmt:
+    | a='elif' named_expression ':' { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "'elif' must match an if-statement here") }
+    | a='else' ':' { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "'else' must match a valid statement here") }
+
 invalid_with_stmt:
-    | [ASYNC] 'with' ','.(expression ['as' star_target])+ NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
-    | [ASYNC] 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
+    | ['async'] 'with' ','.(expression ['as' star_target])+ NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
+    | ['async'] 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
 invalid_with_stmt_indent:
-    | [ASYNC] a='with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT {
+    | ['async'] a='with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT {
         RAISE_INDENTATION_ERROR("expected an indented block after 'with' statement on line %d", a->lineno) }
-    | [ASYNC] a='with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT {
+    | ['async'] a='with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT {
         RAISE_INDENTATION_ERROR("expected an indented block after 'with' statement on line %d", a->lineno) }
 
 invalid_try_stmt:
@@ -1333,15 +1370,15 @@ invalid_while_stmt:
     | a='while' named_expression ':' NEWLINE !INDENT {
         RAISE_INDENTATION_ERROR("expected an indented block after 'while' statement on line %d", a->lineno) }
 invalid_for_stmt:
-    | [ASYNC] 'for' star_targets 'in' star_expressions NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
-    | [ASYNC] a='for' star_targets 'in' star_expressions ':' NEWLINE !INDENT {
+    | ['async'] 'for' star_targets 'in' star_expressions NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
+    | ['async'] a='for' star_targets 'in' star_expressions ':' NEWLINE !INDENT {
         RAISE_INDENTATION_ERROR("expected an indented block after 'for' statement on line %d", a->lineno) }
 invalid_def_raw:
-    | [ASYNC] a='def' NAME '(' [params] ')' ['->' expression] ':' NEWLINE !INDENT {
+    | ['async'] a='def' NAME [type_params] '(' [params] ')' ['->' expression] ':' NEWLINE !INDENT {
         RAISE_INDENTATION_ERROR("expected an indented block after function definition on line %d", a->lineno) }
 invalid_class_def_raw:
-    | 'class' NAME ['(' [arguments] ')'] NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
-    | a='class' NAME ['(' [arguments] ')'] ':' NEWLINE !INDENT {
+    | 'class' NAME [type_params] ['(' [arguments] ')'] NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
+    | a='class' NAME [type_params] ['(' [arguments] ')'] ':' NEWLINE !INDENT {
         RAISE_INDENTATION_ERROR("expected an indented block after class definition on line %d", a->lineno) }
 
 invalid_double_starred_kvpairs:
diff --git a/Include/Python.h b/Include/Python.h
index 52a7aac6ba6cb6..196751c3201e62 100644
--- a/Include/Python.h
+++ b/Include/Python.h
@@ -5,42 +5,56 @@
 #ifndef Py_PYTHON_H
 #define Py_PYTHON_H
 
-// Since this is a "meta-include" file, no #ifdef __cplusplus / extern "C" {
+// Since this is a "meta-include" file, "#ifdef __cplusplus / extern "C" {"
+// is not needed.
+
 
 // Include Python header files
 #include "patchlevel.h"
 #include "pyconfig.h"
 #include "pymacconfig.h"
 
-#if defined(__sgi) && !defined(_SGI_MP_SOURCE)
-#  define _SGI_MP_SOURCE
+
+// Include standard header files
+#include <assert.h>               // assert()
+#include <inttypes.h>             // uintptr_t
+#include <limits.h>               // INT_MAX
+#include <math.h>                 // HUGE_VAL
+#include <stdarg.h>               // va_list
+#include <wchar.h>                // wchar_t
+#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>          // ssize_t
 #endif
 
-// stdlib.h, stdio.h, errno.h and string.h headers are not used by Python
-// headers, but kept for backward compatibility. They are excluded from the
-// limited C API of Python 3.11.
+// <errno.h>, <stdio.h>, <stdlib.h> and <string.h> headers are no longer used
+// by Python, but kept for the backward compatibility of existing third party C
+// extensions. They are not included by limited C API version 3.11 and newer.
+//
+// The <ctype.h> and <unistd.h> headers are not included by limited C API
+// version 3.13 and newer.
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  include <stdlib.h>
-#  include <stdio.h>              // FILE*
 #  include <errno.h>              // errno
+#  include <stdio.h>              // FILE*
+#  include <stdlib.h>             // getenv()
 #  include <string.h>             // memcpy()
 #endif
-#ifndef MS_WINDOWS
-#  include <unistd.h>
-#endif
-#ifdef HAVE_STDDEF_H
-#  include <stddef.h>             // size_t
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030d0000
+#  include <ctype.h>              // tolower()
+#  ifndef MS_WINDOWS
+#    include <unistd.h>           // close()
+#  endif
 #endif
 
-#include <assert.h>               // assert()
-#include <wchar.h>                // wchar_t
 
+// Include Python header files
 #include "pyport.h"
 #include "pymacro.h"
 #include "pymath.h"
 #include "pymem.h"
 #include "pytypedefs.h"
 #include "pybuffer.h"
+#include "pystats.h"
+#include "pyatomic.h"
 #include "object.h"
 #include "objimpl.h"
 #include "typeslots.h"
@@ -83,7 +97,6 @@
 #include "weakrefobject.h"
 #include "structseq.h"
 #include "cpython/picklebufobject.h"
-#include "cpython/pytime.h"
 #include "codecs.h"
 #include "pyerrors.h"
 #include "pythread.h"
@@ -104,6 +117,7 @@
 #include "pystrcmp.h"
 #include "fileutils.h"
 #include "cpython/pyfpe.h"
-#include "tracemalloc.h"
+#include "cpython/tracemalloc.h"
+#include "cpython/optimizer.h"
 
 #endif /* !Py_PYTHON_H */
diff --git a/Include/abstract.h b/Include/abstract.h
index 064b0300b51ea2..bd12a54963c13f 100644
--- a/Include/abstract.h
+++ b/Include/abstract.h
@@ -50,6 +50,25 @@ extern "C" {
 
    This function always succeeds. */
 
+
+/* Implemented elsewhere:
+
+   int PyObject_HasAttrStringWithError(PyObject *o, const char *attr_name);
+
+   Returns 1 if object 'o' has the attribute attr_name, and 0 otherwise.
+   This is equivalent to the Python expression: hasattr(o,attr_name).
+   Returns -1 on failure. */
+
+
+/* Implemented elsewhere:
+
+   int PyObject_HasAttrWithError(PyObject *o, PyObject *attr_name);
+
+   Returns 1 if o has the attribute attr_name, and 0 otherwise.
+   This is equivalent to the Python expression: hasattr(o,attr_name).
+   Returns -1 on failure. */
+
+
 /* Implemented elsewhere:
 
    PyObject* PyObject_GetAttr(PyObject *o, PyObject *attr_name);
@@ -60,6 +79,38 @@ extern "C" {
    This is the equivalent of the Python expression: o.attr_name. */
 
 
+/* Implemented elsewhere:
+
+   int PyObject_GetOptionalAttr(PyObject *obj, PyObject *attr_name, PyObject **result);
+
+   Variant of PyObject_GetAttr() which doesn't raise AttributeError
+   if the attribute is not found.
+
+   If the attribute is found, return 1 and set *result to a new strong
+   reference to the attribute.
+   If the attribute is not found, return 0 and set *result to NULL;
+   the AttributeError is silenced.
+   If an error other than AttributeError is raised, return -1 and
+   set *result to NULL.
+*/
+
+
+/* Implemented elsewhere:
+
+   int PyObject_GetOptionalAttrString(PyObject *obj, const char *attr_name, PyObject **result);
+
+   Variant of PyObject_GetAttrString() which doesn't raise AttributeError
+   if the attribute is not found.
+
+   If the attribute is found, return 1 and set *result to a new strong
+   reference to the attribute.
+   If the attribute is not found, return 0 and set *result to NULL;
+   the AttributeError is silenced.
+   If an error other than AttributeError is raised, return -1 and
+   set *result to NULL.
+*/
+
+
 /* Implemented elsewhere:
 
    int PyObject_SetAttrString(PyObject *o, const char *attr_name, PyObject *v);
@@ -80,7 +131,7 @@ extern "C" {
 
    This is the equivalent of the Python statement o.attr_name=v. */
 
-/* Implemented as a macro:
+/* Implemented elsewhere:
 
    int PyObject_DelAttrString(PyObject *o, const char *attr_name);
 
@@ -88,17 +139,15 @@ extern "C" {
    -1 on failure.
 
    This is the equivalent of the Python statement: del o.attr_name. */
-#define PyObject_DelAttrString(O, A) PyObject_SetAttrString((O), (A), NULL)
 
 
-/* Implemented as a macro:
+/* Implemented elsewhere:
 
    int PyObject_DelAttr(PyObject *o, PyObject *attr_name);
 
    Delete attribute named attr_name, for object o. Returns -1
    on failure.  This is the equivalent of the Python
    statement: del o.attr_name. */
-#define  PyObject_DelAttr(O, A) PyObject_SetAttr((O), (A), NULL)
 
 
 /* Implemented elsewhere:
@@ -135,12 +184,6 @@ extern "C" {
    This function always succeeds. */
 
 
-#ifdef PY_SSIZE_T_CLEAN
-#  define PyObject_CallFunction _PyObject_CallFunction_SizeT
-#  define PyObject_CallMethod _PyObject_CallMethod_SizeT
-#endif
-
-
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03090000
 /* Call a callable Python object without any arguments */
 PyAPI_FUNC(PyObject *) PyObject_CallNoArgs(PyObject *func);
@@ -195,15 +238,6 @@ PyAPI_FUNC(PyObject *) PyObject_CallMethod(PyObject *obj,
                                            const char *name,
                                            const char *format, ...);
 
-PyAPI_FUNC(PyObject *) _PyObject_CallFunction_SizeT(PyObject *callable,
-                                                    const char *format,
-                                                    ...);
-
-PyAPI_FUNC(PyObject *) _PyObject_CallMethod_SizeT(PyObject *obj,
-                                                  const char *name,
-                                                  const char *format,
-                                                  ...);
-
 /* Call a callable Python object 'callable' with a variable number of C
    arguments. The C arguments are provided as PyObject* values, terminated
    by a NULL.
@@ -335,55 +369,6 @@ PyAPI_FUNC(int) PyObject_DelItemString(PyObject *o, const char *key);
 PyAPI_FUNC(int) PyObject_DelItem(PyObject *o, PyObject *key);
 
 
-/* === Old Buffer API ============================================ */
-
-/* FIXME:  usage of these should all be replaced in Python itself
-   but for backwards compatibility we will implement them.
-   Their usage without a corresponding "unlock" mechanism
-   may create issues (but they would already be there). */
-
-/* Takes an arbitrary object which must support the (character, single segment)
-   buffer interface and returns a pointer to a read-only memory location
-   usable as character based input for subsequent processing.
-
-   Return 0 on success.  buffer and buffer_len are only set in case no error
-   occurs. Otherwise, -1 is returned and an exception set. */
-Py_DEPRECATED(3.0)
-PyAPI_FUNC(int) PyObject_AsCharBuffer(PyObject *obj,
-                                      const char **buffer,
-                                      Py_ssize_t *buffer_len);
-
-/* Checks whether an arbitrary object supports the (character, single segment)
-   buffer interface.
-
-   Returns 1 on success, 0 on failure. */
-Py_DEPRECATED(3.0) PyAPI_FUNC(int) PyObject_CheckReadBuffer(PyObject *obj);
-
-/* Same as PyObject_AsCharBuffer() except that this API expects (readable,
-   single segment) buffer interface and returns a pointer to a read-only memory
-   location which can contain arbitrary data.
-
-   0 is returned on success.  buffer and buffer_len are only set in case no
-   error occurs.  Otherwise, -1 is returned and an exception set. */
-Py_DEPRECATED(3.0)
-PyAPI_FUNC(int) PyObject_AsReadBuffer(PyObject *obj,
-                                      const void **buffer,
-                                      Py_ssize_t *buffer_len);
-
-/* Takes an arbitrary object which must support the (writable, single segment)
-   buffer interface and returns a pointer to a writable memory location in
-   buffer of size 'buffer_len'.
-
-   Return 0 on success.  buffer and buffer_len are only set in case no error
-   occurs. Otherwise, -1 is returned and an exception set. */
-Py_DEPRECATED(3.0)
-PyAPI_FUNC(int) PyObject_AsWriteBuffer(PyObject *obj,
-                                       void **buffer,
-                                       Py_ssize_t *buffer_len);
-
-
-/* === New Buffer API ============================================ */
-
 /* Takes an arbitrary object and returns the result of calling
    obj.__format__(format_spec). */
 PyAPI_FUNC(PyObject *) PyObject_Format(PyObject *obj,
@@ -855,6 +840,18 @@ PyAPI_FUNC(int) PyMapping_HasKeyString(PyObject *o, const char *key);
    This function always succeeds. */
 PyAPI_FUNC(int) PyMapping_HasKey(PyObject *o, PyObject *key);
 
+/* Return 1 if the mapping object has the key 'key', and 0 otherwise.
+   This is equivalent to the Python expression: key in o.
+   On failure, return -1. */
+
+PyAPI_FUNC(int) PyMapping_HasKeyWithError(PyObject *o, PyObject *key);
+
+/* Return 1 if the mapping object has the key 'key', and 0 otherwise.
+   This is equivalent to the Python expression: key in o.
+   On failure, return -1. */
+
+PyAPI_FUNC(int) PyMapping_HasKeyStringWithError(PyObject *o, const char *key);
+
 /* On success, return a list or tuple of the keys in mapping object 'o'.
    On failure, return NULL. */
 PyAPI_FUNC(PyObject *) PyMapping_Keys(PyObject *o);
@@ -874,6 +871,21 @@ PyAPI_FUNC(PyObject *) PyMapping_Items(PyObject *o);
 PyAPI_FUNC(PyObject *) PyMapping_GetItemString(PyObject *o,
                                                const char *key);
 
+/* Variants of PyObject_GetItem() and PyMapping_GetItemString() which don't
+   raise KeyError if the key is not found.
+
+   If the key is found, return 1 and set *result to a new strong
+   reference to the corresponding value.
+   If the key is not found, return 0 and set *result to NULL;
+   the KeyError is silenced.
+   If an error other than KeyError is raised, return -1 and
+   set *result to NULL.
+*/
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+PyAPI_FUNC(int) PyMapping_GetOptionalItem(PyObject *, PyObject *, PyObject **);
+PyAPI_FUNC(int) PyMapping_GetOptionalItemString(PyObject *, const char *, PyObject **);
+#endif
+
 /* Map the string 'key' to the value 'v' in the mapping 'o'.
    Returns -1 on failure.
 
diff --git a/Include/boolobject.h b/Include/boolobject.h
index 976fa35201d035..19aef5b1b87c6a 100644
--- a/Include/boolobject.h
+++ b/Include/boolobject.h
@@ -7,7 +7,7 @@ extern "C" {
 #endif
 
 
-PyAPI_DATA(PyTypeObject) PyBool_Type;
+// PyBool_Type is declared by object.h
 
 #define PyBool_Check(x) Py_IS_TYPE((x), &PyBool_Type)
 
diff --git a/Include/bytesobject.h b/Include/bytesobject.h
index ee448cd02bdab3..c5a24195be6bc3 100644
--- a/Include/bytesobject.h
+++ b/Include/bytesobject.h
@@ -1,5 +1,4 @@
-
-/* Bytes object interface */
+// Bytes object interface
 
 #ifndef Py_BYTESOBJECT_H
 #define Py_BYTESOBJECT_H
@@ -7,8 +6,6 @@
 extern "C" {
 #endif
 
-#include <stdarg.h>               // va_list
-
 /*
 Type PyBytesObject represents a byte string.  An extra zero byte is
 reserved at the end to ensure it is zero-terminated, but a size is
diff --git a/Include/ceval.h b/Include/ceval.h
index ad4d909d6f2b14..9885bdb7febc21 100644
--- a/Include/ceval.h
+++ b/Include/ceval.h
@@ -17,27 +17,6 @@ PyAPI_FUNC(PyObject *) PyEval_EvalCodeEx(PyObject *co,
                                          PyObject *const *defs, int defc,
                                          PyObject *kwdefs, PyObject *closure);
 
-/* PyEval_CallObjectWithKeywords(), PyEval_CallObject(), PyEval_CallFunction
- * and PyEval_CallMethod are deprecated. Since they are officially part of the
- * stable ABI (PEP 384), they must be kept for backward compatibility.
- * PyObject_Call(), PyObject_CallFunction() and PyObject_CallMethod() are
- * recommended to call a callable object.
- */
-
-Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(
-    PyObject *callable,
-    PyObject *args,
-    PyObject *kwargs);
-
-/* Deprecated since PyEval_CallObjectWithKeywords is deprecated */
-#define PyEval_CallObject(callable, arg) \
-    PyEval_CallObjectWithKeywords((callable), (arg), _PyObject_CAST(_Py_NULL))
-
-Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallFunction(
-    PyObject *callable, const char *format, ...);
-Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallMethod(
-    PyObject *obj, const char *name, const char *format, ...);
-
 PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);
 PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);
 PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);
@@ -128,14 +107,6 @@ PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(PyFrameObject *f, int exc);
 PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void);
 PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *);
 
-Py_DEPRECATED(3.9) PyAPI_FUNC(int) PyEval_ThreadsInitialized(void);
-Py_DEPRECATED(3.9) PyAPI_FUNC(void) PyEval_InitThreads(void);
-/* PyEval_AcquireLock() and PyEval_ReleaseLock() are part of stable ABI.
- * They will be removed from this header file in the future version.
- * But they will be remained in ABI until Python 4.0.
- */
-Py_DEPRECATED(3.2) PyAPI_FUNC(void) PyEval_AcquireLock(void);
-Py_DEPRECATED(3.2) PyAPI_FUNC(void) PyEval_ReleaseLock(void);
 PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);
 PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);
 
diff --git a/Include/codecs.h b/Include/codecs.h
index 37ecfb4ab757b4..512a3c723eca18 100644
--- a/Include/codecs.h
+++ b/Include/codecs.h
@@ -35,34 +35,6 @@ PyAPI_FUNC(int) PyCodec_Unregister(
        PyObject *search_function
        );
 
-/* Codec registry lookup API.
-
-   Looks up the given encoding and returns a CodecInfo object with
-   function attributes which implement the different aspects of
-   processing the encoding.
-
-   The encoding string is looked up converted to all lower-case
-   characters. This makes encodings looked up through this mechanism
-   effectively case-insensitive.
-
-   If no codec is found, a KeyError is set and NULL returned.
-
-   As side effect, this tries to load the encodings package, if not
-   yet done. This is part of the lazy load strategy for the encodings
-   package.
-
- */
-
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(PyObject *) _PyCodec_Lookup(
-       const char *encoding
-       );
-
-PyAPI_FUNC(int) _PyCodec_Forget(
-       const char *encoding
-       );
-#endif
-
 /* Codec registry encoding check API.
 
    Returns 1/0 depending on whether there is a registered codec for
@@ -106,102 +78,58 @@ PyAPI_FUNC(PyObject *) PyCodec_Decode(
        const char *errors
        );
 
-#ifndef Py_LIMITED_API
-/* Text codec specific encoding and decoding API.
-
-   Checks the encoding against a list of codecs which do not
-   implement a str<->bytes encoding before attempting the
-   operation.
+// --- Codec Lookup APIs --------------------------------------------------
 
-   Please note that these APIs are internal and should not
-   be used in Python C extensions.
-
-   XXX (ncoghlan): should we make these, or something like them, public
-   in Python 3.5+?
+/* Codec registry lookup API.
 
- */
-PyAPI_FUNC(PyObject *) _PyCodec_LookupTextEncoding(
-       const char *encoding,
-       const char *alternate_command
-       );
+   Looks up the given encoding and returns a CodecInfo object with
+   function attributes which implement the different aspects of
+   processing the encoding.
 
-PyAPI_FUNC(PyObject *) _PyCodec_EncodeText(
-       PyObject *object,
-       const char *encoding,
-       const char *errors
-       );
+   The encoding string is looked up converted to all lower-case
+   characters. This makes encodings looked up through this mechanism
+   effectively case-insensitive.
 
-PyAPI_FUNC(PyObject *) _PyCodec_DecodeText(
-       PyObject *object,
-       const char *encoding,
-       const char *errors
-       );
+   If no codec is found, a KeyError is set and NULL returned.
 
-/* These two aren't actually text encoding specific, but _io.TextIOWrapper
- * is the only current API consumer.
+   As side effect, this tries to load the encodings package, if not
+   yet done. This is part of the lazy load strategy for the encodings
+   package.
  */
-PyAPI_FUNC(PyObject *) _PyCodecInfo_GetIncrementalDecoder(
-       PyObject *codec_info,
-       const char *errors
-       );
-
-PyAPI_FUNC(PyObject *) _PyCodecInfo_GetIncrementalEncoder(
-       PyObject *codec_info,
-       const char *errors
-       );
-#endif
-
-
-
-/* --- Codec Lookup APIs --------------------------------------------------
-
-   All APIs return a codec object with incremented refcount and are
-   based on _PyCodec_Lookup().  The same comments w/r to the encoding
-   name also apply to these APIs.
-
-*/
 
 /* Get an encoder function for the given encoding. */
 
-PyAPI_FUNC(PyObject *) PyCodec_Encoder(
-       const char *encoding
-       );
+PyAPI_FUNC(PyObject *) PyCodec_Encoder(const char *encoding);
 
 /* Get a decoder function for the given encoding. */
 
-PyAPI_FUNC(PyObject *) PyCodec_Decoder(
-       const char *encoding
-       );
+PyAPI_FUNC(PyObject *) PyCodec_Decoder(const char *encoding);
 
 /* Get an IncrementalEncoder object for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_IncrementalEncoder(
-       const char *encoding,
-       const char *errors
-       );
+   const char *encoding,
+   const char *errors);
 
 /* Get an IncrementalDecoder object function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_IncrementalDecoder(
-       const char *encoding,
-       const char *errors
-       );
+   const char *encoding,
+   const char *errors);
 
 /* Get a StreamReader factory function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_StreamReader(
-       const char *encoding,
-       PyObject *stream,
-       const char *errors
-       );
+   const char *encoding,
+   PyObject *stream,
+   const char *errors);
 
 /* Get a StreamWriter factory function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_StreamWriter(
-       const char *encoding,
-       PyObject *stream,
-       const char *errors
-       );
+   const char *encoding,
+   PyObject *stream,
+   const char *errors);
 
 /* Unicode encoding error handling callback registry API */
 
diff --git a/Include/compile.h b/Include/compile.h
index 3c5acd7209f763..52d0bc76c9fca4 100644
--- a/Include/compile.h
+++ b/Include/compile.h
@@ -10,9 +10,6 @@ extern "C" {
 #define Py_eval_input 258
 #define Py_func_type_input 345
 
-/* This doesn't need to match anything */
-#define Py_fstring_input 800
-
 #ifndef Py_LIMITED_API
 #  define Py_CPYTHON_COMPILE_H
 #  include "cpython/compile.h"
diff --git a/Include/cpython/abstract.h b/Include/cpython/abstract.h
index 3b27aab2fc4798..4e7b7a46703a6d 100644
--- a/Include/cpython/abstract.h
+++ b/Include/cpython/abstract.h
@@ -4,9 +4,12 @@
 
 /* === Object Protocol ================================================== */
 
-#ifdef PY_SSIZE_T_CLEAN
-#  define _PyObject_CallMethodId _PyObject_CallMethodId_SizeT
-#endif
+/* Like PyObject_CallMethod(), but expect a _Py_Identifier*
+   as the method name. */
+PyAPI_FUNC(PyObject*) _PyObject_CallMethodId(
+    PyObject *obj,
+    _Py_Identifier *name,
+    const char *format, ...);
 
 /* Convert keyword arguments from the FASTCALL (stack: C array, kwnames: tuple)
    format to a Python dictionary ("kwargs" dict).
@@ -18,51 +21,25 @@
    Duplicate keys are merged using the last value. If duplicate keys must raise
    an exception, the caller is responsible to implement an explicit keys on
    kwnames. */
-PyAPI_FUNC(PyObject *) _PyStack_AsDict(
-    PyObject *const *values,
-    PyObject *kwnames);
-
-/* Suggested size (number of positional arguments) for arrays of PyObject*
-   allocated on a C stack to avoid allocating memory on the heap memory. Such
-   array is used to pass positional arguments to call functions of the
-   PyObject_Vectorcall() family.
-
-   The size is chosen to not abuse the C stack and so limit the risk of stack
-   overflow. The size is also chosen to allow using the small stack for most
-   function calls of the Python standard library. On 64-bit CPU, it allocates
-   40 bytes on the stack. */
-#define _PY_FASTCALL_SMALL_STACK 5
-
-PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult(
-    PyThreadState *tstate,
-    PyObject *callable,
-    PyObject *result,
-    const char *where);
+PyAPI_FUNC(PyObject*) _PyStack_AsDict(PyObject *const *values, PyObject *kwnames);
 
-/* === Vectorcall protocol (PEP 590) ============================= */
 
-/* Call callable using tp_call. Arguments are like PyObject_Vectorcall()
-   or PyObject_FastCallDict() (both forms are supported),
-   except that nargs is plainly the number of arguments without flags. */
-PyAPI_FUNC(PyObject *) _PyObject_MakeTpCall(
-    PyThreadState *tstate,
-    PyObject *callable,
-    PyObject *const *args, Py_ssize_t nargs,
-    PyObject *keywords);
+/* === Vectorcall protocol (PEP 590) ============================= */
 
 // PyVectorcall_NARGS() is exported as a function for the stable ABI.
 // Here (when we are not using the stable ABI), the name is overridden to
 // call a static inline function for best performance.
-#define PyVectorcall_NARGS(n) _PyVectorcall_NARGS(n)
 static inline Py_ssize_t
 _PyVectorcall_NARGS(size_t n)
 {
     return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET;
 }
+#define PyVectorcall_NARGS(n) _PyVectorcall_NARGS(n)
 
 PyAPI_FUNC(vectorcallfunc) PyVectorcall_Function(PyObject *callable);
 
-// Backwards compatibility aliases for API that was provisional in Python 3.8
+// Backwards compatibility aliases (PEP 590) for API that was provisional
+// in Python 3.8
 #define _PyObject_Vectorcall PyObject_Vectorcall
 #define _PyObject_VectorcallMethod PyObject_VectorcallMethod
 #define _PyObject_FastCallDict PyObject_VectorcallDict
@@ -79,12 +56,6 @@ PyAPI_FUNC(PyObject *) PyObject_VectorcallDict(
     size_t nargsf,
     PyObject *kwargs);
 
-// Same as PyObject_Vectorcall(), except without keyword arguments
-PyAPI_FUNC(PyObject *) _PyObject_FastCall(
-    PyObject *func,
-    PyObject *const *args,
-    Py_ssize_t nargs);
-
 PyAPI_FUNC(PyObject *) PyObject_CallOneArg(PyObject *func, PyObject *arg);
 
 static inline PyObject *
@@ -103,56 +74,6 @@ PyObject_CallMethodOneArg(PyObject *self, PyObject *name, PyObject *arg)
     return PyObject_VectorcallMethod(name, args, nargsf, _Py_NULL);
 }
 
-PyAPI_FUNC(PyObject *) _PyObject_CallMethod(PyObject *obj,
-                                            PyObject *name,
-                                            const char *format, ...);
-
-/* Like PyObject_CallMethod(), but expect a _Py_Identifier*
-   as the method name. */
-PyAPI_FUNC(PyObject *) _PyObject_CallMethodId(PyObject *obj,
-                                              _Py_Identifier *name,
-                                              const char *format, ...);
-
-PyAPI_FUNC(PyObject *) _PyObject_CallMethodId_SizeT(PyObject *obj,
-                                                    _Py_Identifier *name,
-                                                    const char *format,
-                                                    ...);
-
-PyAPI_FUNC(PyObject *) _PyObject_CallMethodIdObjArgs(
-    PyObject *obj,
-    _Py_Identifier *name,
-    ...);
-
-static inline PyObject *
-_PyObject_VectorcallMethodId(
-    _Py_Identifier *name, PyObject *const *args,
-    size_t nargsf, PyObject *kwnames)
-{
-    PyObject *oname = _PyUnicode_FromId(name); /* borrowed */
-    if (!oname) {
-        return _Py_NULL;
-    }
-    return PyObject_VectorcallMethod(oname, args, nargsf, kwnames);
-}
-
-static inline PyObject *
-_PyObject_CallMethodIdNoArgs(PyObject *self, _Py_Identifier *name)
-{
-    size_t nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
-    return _PyObject_VectorcallMethodId(name, &self, nargsf, _Py_NULL);
-}
-
-static inline PyObject *
-_PyObject_CallMethodIdOneArg(PyObject *self, _Py_Identifier *name, PyObject *arg)
-{
-    PyObject *args[2] = {self, arg};
-    size_t nargsf = 2 | PY_VECTORCALL_ARGUMENTS_OFFSET;
-    assert(arg != NULL);
-    return _PyObject_VectorcallMethodId(name, args, nargsf, _Py_NULL);
-}
-
-PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o);
-
 /* Guess the size of object 'o' using len(o) or o.__length_hint__().
    If neither of those return a non-negative value, then return the default
    value.  If one of the calls fails, this function returns -1. */
@@ -164,43 +85,3 @@ PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
    need to be corrected for a negative index. */
 #define PySequence_ITEM(o, i)\
     ( Py_TYPE(o)->tp_as_sequence->sq_item((o), (i)) )
-
-#define PY_ITERSEARCH_COUNT    1
-#define PY_ITERSEARCH_INDEX    2
-#define PY_ITERSEARCH_CONTAINS 3
-
-/* Iterate over seq.
-
-   Result depends on the operation:
-
-   PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if
-     error.
-   PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of
-     obj in seq; set ValueError and return -1 if none found;
-     also return -1 on error.
-   PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on
-     error. */
-PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq,
-                                              PyObject *obj, int operation);
-
-/* === Mapping protocol ================================================= */
-
-PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
-
-PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
-
-PyAPI_FUNC(char *const *) _PySequence_BytesToCharpArray(PyObject* self);
-
-PyAPI_FUNC(void) _Py_FreeCharPArray(char *const array[]);
-
-/* For internal use by buffer API functions */
-PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index,
-                                        const Py_ssize_t *shape);
-PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index,
-                                        const Py_ssize_t *shape);
-
-/* Convert Python int to Py_ssize_t. Do nothing if the argument is None. */
-PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
-
-/* Same as PyNumber_Index but can return an instance of a subclass of int. */
-PyAPI_FUNC(PyObject *) _PyNumber_Index(PyObject *o);
diff --git a/Include/cpython/bytesobject.h b/Include/cpython/bytesobject.h
index e982031c107de2..816823716e9a6f 100644
--- a/Include/cpython/bytesobject.h
+++ b/Include/cpython/bytesobject.h
@@ -15,18 +15,6 @@ typedef struct {
 } PyBytesObject;
 
 PyAPI_FUNC(int) _PyBytes_Resize(PyObject **, Py_ssize_t);
-PyAPI_FUNC(PyObject*) _PyBytes_FormatEx(
-    const char *format,
-    Py_ssize_t format_len,
-    PyObject *args,
-    int use_bytearray);
-PyAPI_FUNC(PyObject*) _PyBytes_FromHex(
-    PyObject *string,
-    int use_bytearray);
-
-/* Helper for PyBytes_DecodeEscape that detects invalid escape chars. */
-PyAPI_FUNC(PyObject *) _PyBytes_DecodeEscape(const char *, Py_ssize_t,
-                                             const char *, const char **);
 
 /* Macros and static inline functions, trading safety for speed */
 #define _PyBytes_CAST(op) \
@@ -43,87 +31,3 @@ static inline Py_ssize_t PyBytes_GET_SIZE(PyObject *op) {
     return Py_SIZE(self);
 }
 #define PyBytes_GET_SIZE(self) PyBytes_GET_SIZE(_PyObject_CAST(self))
-
-/* _PyBytes_Join(sep, x) is like sep.join(x).  sep must be PyBytesObject*,
-   x must be an iterable object. */
-PyAPI_FUNC(PyObject *) _PyBytes_Join(PyObject *sep, PyObject *x);
-
-
-/* The _PyBytesWriter structure is big: it contains an embedded "stack buffer".
-   A _PyBytesWriter variable must be declared at the end of variables in a
-   function to optimize the memory allocation on the stack. */
-typedef struct {
-    /* bytes, bytearray or NULL (when the small buffer is used) */
-    PyObject *buffer;
-
-    /* Number of allocated size. */
-    Py_ssize_t allocated;
-
-    /* Minimum number of allocated bytes,
-       incremented by _PyBytesWriter_Prepare() */
-    Py_ssize_t min_size;
-
-    /* If non-zero, use a bytearray instead of a bytes object for buffer. */
-    int use_bytearray;
-
-    /* If non-zero, overallocate the buffer (default: 0).
-       This flag must be zero if use_bytearray is non-zero. */
-    int overallocate;
-
-    /* Stack buffer */
-    int use_small_buffer;
-    char small_buffer[512];
-} _PyBytesWriter;
-
-/* Initialize a bytes writer
-
-   By default, the overallocation is disabled. Set the overallocate attribute
-   to control the allocation of the buffer. */
-PyAPI_FUNC(void) _PyBytesWriter_Init(_PyBytesWriter *writer);
-
-/* Get the buffer content and reset the writer.
-   Return a bytes object, or a bytearray object if use_bytearray is non-zero.
-   Raise an exception and return NULL on error. */
-PyAPI_FUNC(PyObject *) _PyBytesWriter_Finish(_PyBytesWriter *writer,
-    void *str);
-
-/* Deallocate memory of a writer (clear its internal buffer). */
-PyAPI_FUNC(void) _PyBytesWriter_Dealloc(_PyBytesWriter *writer);
-
-/* Allocate the buffer to write size bytes.
-   Return the pointer to the beginning of buffer data.
-   Raise an exception and return NULL on error. */
-PyAPI_FUNC(void*) _PyBytesWriter_Alloc(_PyBytesWriter *writer,
-    Py_ssize_t size);
-
-/* Ensure that the buffer is large enough to write *size* bytes.
-   Add size to the writer minimum size (min_size attribute).
-
-   str is the current pointer inside the buffer.
-   Return the updated current pointer inside the buffer.
-   Raise an exception and return NULL on error. */
-PyAPI_FUNC(void*) _PyBytesWriter_Prepare(_PyBytesWriter *writer,
-    void *str,
-    Py_ssize_t size);
-
-/* Resize the buffer to make it larger.
-   The new buffer may be larger than size bytes because of overallocation.
-   Return the updated current pointer inside the buffer.
-   Raise an exception and return NULL on error.
-
-   Note: size must be greater than the number of allocated bytes in the writer.
-
-   This function doesn't use the writer minimum size (min_size attribute).
-
-   See also _PyBytesWriter_Prepare().
-   */
-PyAPI_FUNC(void*) _PyBytesWriter_Resize(_PyBytesWriter *writer,
-    void *str,
-    Py_ssize_t size);
-
-/* Write bytes.
-   Raise an exception and return NULL on error. */
-PyAPI_FUNC(void*) _PyBytesWriter_WriteBytes(_PyBytesWriter *writer,
-    void *str,
-    const void *bytes,
-    Py_ssize_t size);
diff --git a/Include/cpython/ceval.h b/Include/cpython/ceval.h
index 0fbbee10c2edce..78f7405661662f 100644
--- a/Include/cpython/ceval.h
+++ b/Include/cpython/ceval.h
@@ -4,14 +4,9 @@
 
 PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *);
 PyAPI_FUNC(void) PyEval_SetProfileAllThreads(Py_tracefunc, PyObject *);
-PyAPI_DATA(int) _PyEval_SetProfile(PyThreadState *tstate, Py_tracefunc func, PyObject *arg);
 PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *);
 PyAPI_FUNC(void) PyEval_SetTraceAllThreads(Py_tracefunc, PyObject *);
-PyAPI_FUNC(int) _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg);
 
-/* Helper to look up a builtin object */
-PyAPI_FUNC(PyObject *) _PyEval_GetBuiltin(PyObject *);
-PyAPI_FUNC(PyObject *) _PyEval_GetBuiltinId(_Py_Identifier *);
 /* Look at the current frame's (if any) code's co_flags, and turn on
    the corresponding compiler flags in cf->cf_flags.  Return 1 if any
    flag was set, else return 0. */
@@ -19,9 +14,6 @@ PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf);
 
 PyAPI_FUNC(PyObject *) _PyEval_EvalFrameDefault(PyThreadState *tstate, struct _PyInterpreterFrame *f, int exc);
 
-PyAPI_FUNC(void) _PyEval_SetSwitchInterval(unsigned long microseconds);
-PyAPI_FUNC(unsigned long) _PyEval_GetSwitchInterval(void);
-
 PyAPI_FUNC(Py_ssize_t) PyUnstable_Eval_RequestCodeExtraIndex(freefunc);
 // Old name -- remove when this API changes:
 _Py_DEPRECATED_EXTERNALLY(3.12) static inline Py_ssize_t
diff --git a/Include/cpython/code.h b/Include/cpython/code.h
index 6bead361c79245..cf715c55a2b3b8 100644
--- a/Include/cpython/code.h
+++ b/Include/cpython/code.h
@@ -8,16 +8,21 @@
 extern "C" {
 #endif
 
-
+/* Count of all local monitoring events */
+#define  _PY_MONITORING_LOCAL_EVENTS 10
 /* Count of all "real" monitoring events (not derived from other events) */
-#define PY_MONITORING_UNGROUPED_EVENTS 14
+#define _PY_MONITORING_UNGROUPED_EVENTS 15
 /* Count of all  monitoring events */
-#define PY_MONITORING_EVENTS 16
+#define _PY_MONITORING_EVENTS 17
+
+/* Tables of which tools are active for each monitored event. */
+typedef struct _Py_LocalMonitors {
+    uint8_t tools[_PY_MONITORING_LOCAL_EVENTS];
+} _Py_LocalMonitors;
 
-/* Table of which tools are active for each monitored event. */
-typedef struct _Py_Monitors {
-    uint8_t tools[PY_MONITORING_UNGROUPED_EVENTS];
-} _Py_Monitors;
+typedef struct _Py_GlobalMonitors {
+    uint8_t tools[_PY_MONITORING_UNGROUPED_EVENTS];
+} _Py_GlobalMonitors;
 
 /* Each instruction in a code object is a fixed-width value,
  * currently 2 bytes: 1-byte opcode + 1-byte oparg.  The EXTENDED_ARG
@@ -76,14 +81,21 @@ typedef struct {
     int8_t line_delta;
 } _PyCoLineInstrumentationData;
 
+
+typedef struct {
+    int size;
+    int capacity;
+    struct _PyExecutorObject *executors[1];
+} _PyExecutorArray;
+
 /* Main data structure used for instrumentation.
  * This is allocated when needed for instrumentation
  */
 typedef struct {
     /* Monitoring specific to this code object */
-    _Py_Monitors local_monitors;
+    _Py_LocalMonitors local_monitors;
     /* Monitoring that is active on this code object */
-    _Py_Monitors active_monitors;
+    _Py_LocalMonitors active_monitors;
     /* The tools that are to be notified for events for the matching code unit */
     uint8_t *tools;
     /* Information to support line events */
@@ -153,8 +165,9 @@ typedef struct {
     PyObject *co_qualname;        /* unicode (qualname, for reference) */      \
     PyObject *co_linetable;       /* bytes object that holds location info */  \
     PyObject *co_weakreflist;     /* to support weakrefs to code objects */    \
+    _PyExecutorArray *co_executors;      /* executors from optimizer */        \
     _PyCoCached *_co_cached;      /* cached co_* attributes */                 \
-    uint64_t _co_instrumentation_version; /* current instrumentation version */  \
+    uintptr_t _co_instrumentation_version; /* current instrumentation version */ \
     _PyCoMonitoringData *_co_monitoring; /* Monitoring data */                 \
     int _co_firsttraceable;       /* index of first traceable instruction */   \
     /* Scratch space for extra data relating to the code object.               \
diff --git a/Include/cpython/compile.h b/Include/cpython/compile.h
index f5a62a8ec6dd0c..0d587505ef7f85 100644
--- a/Include/cpython/compile.h
+++ b/Include/cpython/compile.h
@@ -19,9 +19,10 @@
 #define PyCF_TYPE_COMMENTS 0x1000
 #define PyCF_ALLOW_TOP_LEVEL_AWAIT 0x2000
 #define PyCF_ALLOW_INCOMPLETE_INPUT 0x4000
+#define PyCF_OPTIMIZED_AST (0x8000 | PyCF_ONLY_AST)
 #define PyCF_COMPILE_MASK (PyCF_ONLY_AST | PyCF_ALLOW_TOP_LEVEL_AWAIT | \
                            PyCF_TYPE_COMMENTS | PyCF_DONT_IMPLY_DEDENT | \
-                           PyCF_ALLOW_INCOMPLETE_INPUT)
+                           PyCF_ALLOW_INCOMPLETE_INPUT | PyCF_OPTIMIZED_AST)
 
 typedef struct {
     int cf_flags;  /* bitmask of CO_xxx flags relevant to future */
diff --git a/Include/cpython/complexobject.h b/Include/cpython/complexobject.h
index b7d7283ae88965..fbdc6a91fe895c 100644
--- a/Include/cpython/complexobject.h
+++ b/Include/cpython/complexobject.h
@@ -7,8 +7,7 @@ typedef struct {
     double imag;
 } Py_complex;
 
-/* Operations on complex numbers from complexmodule.c */
-
+// Operations on complex numbers.
 PyAPI_FUNC(Py_complex) _Py_c_sum(Py_complex, Py_complex);
 PyAPI_FUNC(Py_complex) _Py_c_diff(Py_complex, Py_complex);
 PyAPI_FUNC(Py_complex) _Py_c_neg(Py_complex);
@@ -17,6 +16,7 @@ PyAPI_FUNC(Py_complex) _Py_c_quot(Py_complex, Py_complex);
 PyAPI_FUNC(Py_complex) _Py_c_pow(Py_complex, Py_complex);
 PyAPI_FUNC(double) _Py_c_abs(Py_complex);
 
+
 /* Complex object interface */
 
 /*
@@ -31,14 +31,3 @@ typedef struct {
 PyAPI_FUNC(PyObject *) PyComplex_FromCComplex(Py_complex);
 
 PyAPI_FUNC(Py_complex) PyComplex_AsCComplex(PyObject *op);
-
-#ifdef Py_BUILD_CORE
-/* Format the object based on the format_spec, as defined in PEP 3101
-   (Advanced String Formatting). */
-extern int _PyComplex_FormatAdvancedWriter(
-    _PyUnicodeWriter *writer,
-    PyObject *obj,
-    PyObject *format_spec,
-    Py_ssize_t start,
-    Py_ssize_t end);
-#endif  // Py_BUILD_CORE
diff --git a/Include/cpython/context.h b/Include/cpython/context.h
index 9879fc7192ebb8..a3249fc29b082e 100644
--- a/Include/cpython/context.h
+++ b/Include/cpython/context.h
@@ -67,10 +67,6 @@ PyAPI_FUNC(PyObject *) PyContextVar_Set(PyObject *var, PyObject *value);
 PyAPI_FUNC(int) PyContextVar_Reset(PyObject *var, PyObject *token);
 
 
-/* This method is exposed only for CPython tests. Don not use it. */
-PyAPI_FUNC(PyObject *) _PyContext_NewHamtForTests(void);
-
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/cpython/descrobject.h b/Include/cpython/descrobject.h
index e2ea1b9a2d3058..bbad8b59c225ab 100644
--- a/Include/cpython/descrobject.h
+++ b/Include/cpython/descrobject.h
@@ -57,8 +57,6 @@ typedef struct {
     void *d_wrapped; /* This can be any function pointer */
 } PyWrapperDescrObject;
 
-PyAPI_DATA(PyTypeObject) _PyMethodWrapper_Type;
-
 PyAPI_FUNC(PyObject *) PyDescr_NewWrapper(PyTypeObject *,
                                                 struct wrapperbase *, void *);
 PyAPI_FUNC(int) PyDescr_IsData(PyObject *);
diff --git a/Include/cpython/dictobject.h b/Include/cpython/dictobject.h
index ddada922020aa4..944965fb9e5351 100644
--- a/Include/cpython/dictobject.h
+++ b/Include/cpython/dictobject.h
@@ -33,21 +33,10 @@ typedef struct {
 } PyDictObject;
 
 PyAPI_FUNC(PyObject *) _PyDict_GetItem_KnownHash(PyObject *mp, PyObject *key,
-                                       Py_hash_t hash);
-PyAPI_FUNC(PyObject *) _PyDict_GetItemWithError(PyObject *dp, PyObject *key);
-PyAPI_FUNC(PyObject *) _PyDict_GetItemIdWithError(PyObject *dp,
-                                                  _Py_Identifier *key);
+                                                 Py_hash_t hash);
 PyAPI_FUNC(PyObject *) _PyDict_GetItemStringWithError(PyObject *, const char *);
 PyAPI_FUNC(PyObject *) PyDict_SetDefault(
     PyObject *mp, PyObject *key, PyObject *defaultobj);
-PyAPI_FUNC(int) _PyDict_SetItem_KnownHash(PyObject *mp, PyObject *key,
-                                          PyObject *item, Py_hash_t hash);
-PyAPI_FUNC(int) _PyDict_DelItem_KnownHash(PyObject *mp, PyObject *key,
-                                          Py_hash_t hash);
-PyAPI_FUNC(int) _PyDict_DelItemIf(PyObject *mp, PyObject *key,
-                                  int (*predicate)(PyObject *value));
-PyAPI_FUNC(int) _PyDict_Next(
-    PyObject *mp, Py_ssize_t *pos, PyObject **key, PyObject **value, Py_hash_t *hash);
 
 /* Get the number of items of a dictionary. */
 static inline Py_ssize_t PyDict_GET_SIZE(PyObject *op) {
@@ -58,35 +47,13 @@ static inline Py_ssize_t PyDict_GET_SIZE(PyObject *op) {
 }
 #define PyDict_GET_SIZE(op) PyDict_GET_SIZE(_PyObject_CAST(op))
 
-PyAPI_FUNC(int) _PyDict_Contains_KnownHash(PyObject *, PyObject *, Py_hash_t);
-PyAPI_FUNC(int) _PyDict_ContainsId(PyObject *, _Py_Identifier *);
-PyAPI_FUNC(PyObject *) _PyDict_NewPresized(Py_ssize_t minused);
-PyAPI_FUNC(void) _PyDict_MaybeUntrack(PyObject *mp);
-PyAPI_FUNC(int) _PyDict_HasOnlyStringKeys(PyObject *mp);
-PyAPI_FUNC(Py_ssize_t) _PyDict_SizeOf(PyDictObject *);
-PyAPI_FUNC(PyObject *) _PyDict_Pop(PyObject *, PyObject *, PyObject *);
-#define _PyDict_HasSplitTable(d) ((d)->ma_values != NULL)
-
-/* Like PyDict_Merge, but override can be 0, 1 or 2.  If override is 0,
-   the first occurrence of a key wins, if override is 1, the last occurrence
-   of a key wins, if override is 2, a KeyError with conflicting key as
-   argument is raised.
-*/
-PyAPI_FUNC(int) _PyDict_MergeEx(PyObject *mp, PyObject *other, int override);
-PyAPI_FUNC(int) _PyDict_SetItemId(PyObject *dp, _Py_Identifier *key, PyObject *item);
-
-PyAPI_FUNC(int) _PyDict_DelItemId(PyObject *mp, _Py_Identifier *key);
-PyAPI_FUNC(void) _PyDict_DebugMallocStats(FILE *out);
-
-/* _PyDictView */
+PyAPI_FUNC(int) PyDict_ContainsString(PyObject *mp, const char *key);
 
-typedef struct {
-    PyObject_HEAD
-    PyDictObject *dv_dict;
-} _PyDictViewObject;
+PyAPI_FUNC(PyObject *) _PyDict_NewPresized(Py_ssize_t minused);
 
-PyAPI_FUNC(PyObject *) _PyDictView_New(PyObject *, PyTypeObject *);
-PyAPI_FUNC(PyObject *) _PyDictView_Intersect(PyObject* self, PyObject *other);
+PyAPI_FUNC(int) PyDict_Pop(PyObject *dict, PyObject *key, PyObject **result);
+PyAPI_FUNC(int) PyDict_PopString(PyObject *dict, const char *key, PyObject **result);
+PyAPI_FUNC(PyObject *) _PyDict_Pop(PyObject *dict, PyObject *key, PyObject *default_value);
 
 /* Dictionary watchers */
 
diff --git a/Include/cpython/fileobject.h b/Include/cpython/fileobject.h
index b70ec318986d82..e2d89c522bdd13 100644
--- a/Include/cpython/fileobject.h
+++ b/Include/cpython/fileobject.h
@@ -3,7 +3,6 @@
 #endif
 
 PyAPI_FUNC(char *) Py_UniversalNewlineFgets(char *, int, FILE*, PyObject *);
-PyAPI_FUNC(char *) _Py_UniversalNewlineFgetsWithSize(char *, int, FILE*, PyObject *, size_t*);
 
 /* The std printer acts as a preliminary sys.stderr until the new io
    infrastructure is in place. */
@@ -15,5 +14,3 @@ typedef PyObject * (*Py_OpenCodeHookFunction)(PyObject *, void *);
 PyAPI_FUNC(PyObject *) PyFile_OpenCode(const char *utf8path);
 PyAPI_FUNC(PyObject *) PyFile_OpenCodeObject(PyObject *path);
 PyAPI_FUNC(int) PyFile_SetOpenCodeHook(Py_OpenCodeHookFunction hook, void *userData);
-
-PyAPI_FUNC(int) _PyLong_FileDescriptor_Converter(PyObject *, void *);
diff --git a/Include/cpython/frameobject.h b/Include/cpython/frameobject.h
index 6f3efe36ede5d8..4e19535c656f2c 100644
--- a/Include/cpython/frameobject.h
+++ b/Include/cpython/frameobject.h
@@ -4,8 +4,6 @@
 #  error "this header file must not be included directly"
 #endif
 
-struct _PyInterpreterFrame;
-
 /* Standard object interface */
 
 PyAPI_FUNC(PyFrameObject *) PyFrame_New(PyThreadState *, PyCodeObject *,
@@ -29,18 +27,3 @@ PyAPI_FUNC(int) _PyFrame_IsEntryFrame(PyFrameObject *frame);
 
 PyAPI_FUNC(int) PyFrame_FastToLocalsWithError(PyFrameObject *f);
 PyAPI_FUNC(void) PyFrame_FastToLocals(PyFrameObject *);
-
-/* The following functions are for use by debuggers and other tools
- * implementing custom frame evaluators with PEP 523. */
-
-/* Returns the code object of the frame (strong reference).
- * Does not raise an exception. */
-PyAPI_FUNC(PyCodeObject *) PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame);
-
-/* Returns a byte ofsset into the last executed instruction.
- * Does not raise an exception. */
-PyAPI_FUNC(int) PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame);
-
-/* Returns the currently executing line number, or -1 if there is no line number.
- * Does not raise an exception. */
-PyAPI_FUNC(int) PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame);
diff --git a/Include/cpython/funcobject.h b/Include/cpython/funcobject.h
index c716330cc3fbab..de2013323d2c72 100644
--- a/Include/cpython/funcobject.h
+++ b/Include/cpython/funcobject.h
@@ -41,6 +41,7 @@ typedef struct {
     PyObject *func_weakreflist; /* List of weak references */
     PyObject *func_module;      /* The __module__ attribute, can be anything */
     PyObject *func_annotations; /* Annotations, a dict or NULL */
+    PyObject *func_typeparams;  /* Tuple of active type variables or NULL */
     vectorcallfunc vectorcall;
     /* Version number for use by specializer.
      * Can set to non-zero when we want to specialize.
@@ -78,12 +79,6 @@ PyAPI_FUNC(int) PyFunction_SetClosure(PyObject *, PyObject *);
 PyAPI_FUNC(PyObject *) PyFunction_GetAnnotations(PyObject *);
 PyAPI_FUNC(int) PyFunction_SetAnnotations(PyObject *, PyObject *);
 
-PyAPI_FUNC(PyObject *) _PyFunction_Vectorcall(
-    PyObject *func,
-    PyObject *const *stack,
-    size_t nargsf,
-    PyObject *kwnames);
-
 #define _PyFunction_CAST(func) \
     (assert(PyFunction_Check(func)), _Py_CAST(PyFunctionObject*, func))
 
diff --git a/Include/cpython/genobject.h b/Include/cpython/genobject.h
index 7856481b5db300..49e46c277d75ae 100644
--- a/Include/cpython/genobject.h
+++ b/Include/cpython/genobject.h
@@ -41,9 +41,6 @@ PyAPI_DATA(PyTypeObject) PyGen_Type;
 PyAPI_FUNC(PyObject *) PyGen_New(PyFrameObject *);
 PyAPI_FUNC(PyObject *) PyGen_NewWithQualName(PyFrameObject *,
     PyObject *name, PyObject *qualname);
-PyAPI_FUNC(int) _PyGen_SetStopIterationValue(PyObject *);
-PyAPI_FUNC(int) _PyGen_FetchStopIterationValue(PyObject **);
-PyAPI_FUNC(void) _PyGen_Finalize(PyObject *self);
 PyAPI_FUNC(PyCodeObject *) PyGen_GetCode(PyGenObject *gen);
 
 
@@ -54,7 +51,6 @@ typedef struct {
 } PyCoroObject;
 
 PyAPI_DATA(PyTypeObject) PyCoro_Type;
-PyAPI_DATA(PyTypeObject) _PyCoroWrapper_Type;
 
 #define PyCoro_CheckExact(op) Py_IS_TYPE((op), &PyCoro_Type)
 PyAPI_FUNC(PyObject *) PyCoro_New(PyFrameObject *,
@@ -69,8 +65,6 @@ typedef struct {
 
 PyAPI_DATA(PyTypeObject) PyAsyncGen_Type;
 PyAPI_DATA(PyTypeObject) _PyAsyncGenASend_Type;
-PyAPI_DATA(PyTypeObject) _PyAsyncGenWrappedValue_Type;
-PyAPI_DATA(PyTypeObject) _PyAsyncGenAThrow_Type;
 
 PyAPI_FUNC(PyObject *) PyAsyncGen_New(PyFrameObject *,
     PyObject *name, PyObject *qualname);
diff --git a/Include/cpython/import.h b/Include/cpython/import.h
index 2bca4ade4c4f2c..7daf0b84fcf71b 100644
--- a/Include/cpython/import.h
+++ b/Include/cpython/import.h
@@ -4,23 +4,6 @@
 
 PyMODINIT_FUNC PyInit__imp(void);
 
-PyAPI_FUNC(int) _PyImport_IsInitialized(PyInterpreterState *);
-
-PyAPI_FUNC(PyObject *) _PyImport_GetModuleId(_Py_Identifier *name);
-PyAPI_FUNC(int) _PyImport_SetModule(PyObject *name, PyObject *module);
-PyAPI_FUNC(int) _PyImport_SetModuleString(const char *name, PyObject* module);
-
-PyAPI_FUNC(void) _PyImport_AcquireLock(PyInterpreterState *interp);
-PyAPI_FUNC(int) _PyImport_ReleaseLock(PyInterpreterState *interp);
-
-PyAPI_FUNC(int) _PyImport_FixupBuiltin(
-    PyObject *mod,
-    const char *name,            /* UTF-8 encoded string */
-    PyObject *modules
-    );
-PyAPI_FUNC(int) _PyImport_FixupExtensionObject(PyObject*, PyObject *,
-                                               PyObject *, PyObject *);
-
 struct _inittab {
     const char *name;           /* ASCII encoded string */
     PyObject* (*initfunc)(void);
@@ -34,13 +17,9 @@ struct _frozen {
     const unsigned char *code;
     int size;
     int is_package;
-    PyObject *(*get_code)(void);
 };
 
 /* Embedding apps may change this pointer to point to their favorite
    collection of frozen modules: */
 
 PyAPI_DATA(const struct _frozen *) PyImport_FrozenModules;
-
-PyAPI_DATA(PyObject *) _PyImport_GetModuleAttr(PyObject *, PyObject *);
-PyAPI_DATA(PyObject *) _PyImport_GetModuleAttrString(const char *, const char *);
diff --git a/Include/cpython/initconfig.h b/Include/cpython/initconfig.h
index efae2409b50069..87c059c521cbc9 100644
--- a/Include/cpython/initconfig.h
+++ b/Include/cpython/initconfig.h
@@ -25,7 +25,6 @@ PyAPI_FUNC(PyStatus) PyStatus_Exit(int exitcode);
 PyAPI_FUNC(int) PyStatus_IsError(PyStatus err);
 PyAPI_FUNC(int) PyStatus_IsExit(PyStatus err);
 PyAPI_FUNC(int) PyStatus_Exception(PyStatus err);
-PyAPI_FUNC(PyObject *) _PyErr_SetFromPyStatus(PyStatus status);
 
 /* --- PyWideStringList ------------------------------------------------ */
 
@@ -181,6 +180,8 @@ typedef struct PyConfig {
     int safe_path;
     int int_max_str_digits;
 
+    int cpu_count;
+
     /* --- Path configuration inputs ------------ */
     int pathconfig_warnings;
     wchar_t *program_name;
@@ -205,6 +206,9 @@ typedef struct PyConfig {
     wchar_t *run_module;
     wchar_t *run_filename;
 
+    /* --- Set by Py_Main() -------------------------- */
+    wchar_t *sys_path_0;
+
     /* --- Private fields ---------------------------- */
 
     // Install importlib? If equals to 0, importlib is not initialized at all.
@@ -216,6 +220,17 @@ typedef struct PyConfig {
 
     // If non-zero, we believe we're running from a source tree.
     int _is_python_build;
+
+#ifdef Py_STATS
+    // If non-zero, turns on statistics gathering.
+    int _pystats;
+#endif
+
+#ifdef Py_DEBUG
+    // If not empty, import a non-__main__ module before site.py is executed.
+    // PYTHON_PRESITE=package.module or -X presite=package.module
+    wchar_t *run_presite;
+#endif
 } PyConfig;
 
 PyAPI_FUNC(void) PyConfig_InitPythonConfig(PyConfig *config);
@@ -242,41 +257,6 @@ PyAPI_FUNC(PyStatus) PyConfig_SetWideStringList(PyConfig *config,
     Py_ssize_t length, wchar_t **items);
 
 
-/* --- PyInterpreterConfig ------------------------------------ */
-
-typedef struct {
-    // XXX "allow_object_sharing"?  "own_objects"?
-    int use_main_obmalloc;
-    int allow_fork;
-    int allow_exec;
-    int allow_threads;
-    int allow_daemon_threads;
-    int check_multi_interp_extensions;
-    int own_gil;
-} PyInterpreterConfig;
-
-#define _PyInterpreterConfig_INIT \
-    { \
-        .use_main_obmalloc = 0, \
-        .allow_fork = 0, \
-        .allow_exec = 0, \
-        .allow_threads = 1, \
-        .allow_daemon_threads = 0, \
-        .check_multi_interp_extensions = 1, \
-        .own_gil = 1, \
-    }
-
-#define _PyInterpreterConfig_LEGACY_INIT \
-    { \
-        .use_main_obmalloc = 1, \
-        .allow_fork = 1, \
-        .allow_exec = 1, \
-        .allow_threads = 1, \
-        .allow_daemon_threads = 1, \
-        .check_multi_interp_extensions = 0, \
-        .own_gil = 0, \
-    }
-
 /* --- Helper functions --------------------------------------- */
 
 /* Get the original command line arguments, before Python modified them.
diff --git a/Include/cpython/interpreteridobject.h b/Include/cpython/interpreteridobject.h
new file mode 100644
index 00000000000000..4ab9ad5d315f80
--- /dev/null
+++ b/Include/cpython/interpreteridobject.h
@@ -0,0 +1,11 @@
+#ifndef Py_CPYTHON_INTERPRETERIDOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+/* Interpreter ID Object */
+
+PyAPI_DATA(PyTypeObject) PyInterpreterID_Type;
+
+PyAPI_FUNC(PyObject *) PyInterpreterID_New(int64_t);
+PyAPI_FUNC(PyObject *) PyInterpreterState_GetIDObject(PyInterpreterState *);
+PyAPI_FUNC(PyInterpreterState *) PyInterpreterID_LookUp(PyObject *);
diff --git a/Include/cpython/listobject.h b/Include/cpython/listobject.h
index 8fa82122d8d248..8ade1b164681f9 100644
--- a/Include/cpython/listobject.h
+++ b/Include/cpython/listobject.h
@@ -21,9 +21,6 @@ typedef struct {
     Py_ssize_t allocated;
 } PyListObject;
 
-PyAPI_FUNC(PyObject *) _PyList_Extend(PyListObject *, PyObject *);
-PyAPI_FUNC(void) _PyList_DebugMallocStats(FILE *out);
-
 /* Cast argument to PyListObject* type. */
 #define _PyList_CAST(op) \
     (assert(PyList_Check(op)), _Py_CAST(PyListObject*, (op)))
@@ -41,7 +38,12 @@ static inline Py_ssize_t PyList_GET_SIZE(PyObject *op) {
 static inline void
 PyList_SET_ITEM(PyObject *op, Py_ssize_t index, PyObject *value) {
     PyListObject *list = _PyList_CAST(op);
+    assert(0 <= index);
+    assert(index < list->allocated);
     list->ob_item[index] = value;
 }
 #define PyList_SET_ITEM(op, index, value) \
     PyList_SET_ITEM(_PyObject_CAST(op), (index), _PyObject_CAST(value))
+
+PyAPI_FUNC(int) PyList_Extend(PyObject *self, PyObject *iterable);
+PyAPI_FUNC(int) PyList_Clear(PyObject *self);
diff --git a/Include/cpython/longintrepr.h b/Include/cpython/longintrepr.h
index c4cf820da5e4f2..f5ccbb704e8bb8 100644
--- a/Include/cpython/longintrepr.h
+++ b/Include/cpython/longintrepr.h
@@ -89,13 +89,42 @@ struct _longobject {
     _PyLongValue long_value;
 };
 
-PyAPI_FUNC(PyLongObject *) _PyLong_New(Py_ssize_t);
+PyAPI_FUNC(PyLongObject*) _PyLong_New(Py_ssize_t);
 
-/* Return a copy of src. */
-PyAPI_FUNC(PyObject *) _PyLong_Copy(PyLongObject *src);
+// Return a copy of src.
+PyAPI_FUNC(PyObject*) _PyLong_Copy(PyLongObject *src);
 
-PyAPI_FUNC(PyLongObject *)
-_PyLong_FromDigits(int negative, Py_ssize_t digit_count, digit *digits);
+PyAPI_FUNC(PyLongObject*) _PyLong_FromDigits(
+    int negative,
+    Py_ssize_t digit_count,
+    digit *digits);
+
+
+/* Inline some internals for speed. These should be in pycore_long.h
+ * if user code didn't need them inlined. */
+
+#define _PyLong_SIGN_MASK 3
+#define _PyLong_NON_SIZE_BITS 3
+
+
+static inline int
+_PyLong_IsCompact(const PyLongObject* op) {
+    assert(PyType_HasFeature((op)->ob_base.ob_type, Py_TPFLAGS_LONG_SUBCLASS));
+    return op->long_value.lv_tag < (2 << _PyLong_NON_SIZE_BITS);
+}
+
+#define PyUnstable_Long_IsCompact _PyLong_IsCompact
+
+static inline Py_ssize_t
+_PyLong_CompactValue(const PyLongObject *op)
+{
+    assert(PyType_HasFeature((op)->ob_base.ob_type, Py_TPFLAGS_LONG_SUBCLASS));
+    assert(PyUnstable_Long_IsCompact(op));
+    Py_ssize_t sign = 1 - (op->long_value.lv_tag & _PyLong_SIGN_MASK);
+    return sign * (Py_ssize_t)op->long_value.ob_digit[0];
+}
+
+#define PyUnstable_Long_CompactValue _PyLong_CompactValue
 
 
 #ifdef __cplusplus
diff --git a/Include/cpython/longobject.h b/Include/cpython/longobject.h
index 1a73799d658fe0..fd1be29ed397d1 100644
--- a/Include/cpython/longobject.h
+++ b/Include/cpython/longobject.h
@@ -2,48 +2,16 @@
 #  error "this header file must not be included directly"
 #endif
 
-PyAPI_FUNC(int) _PyLong_AsInt(PyObject *);
+PyAPI_FUNC(PyObject*) PyLong_FromUnicodeObject(PyObject *u, int base);
 
-PyAPI_FUNC(int) _PyLong_UnsignedShort_Converter(PyObject *, void *);
-PyAPI_FUNC(int) _PyLong_UnsignedInt_Converter(PyObject *, void *);
-PyAPI_FUNC(int) _PyLong_UnsignedLong_Converter(PyObject *, void *);
-PyAPI_FUNC(int) _PyLong_UnsignedLongLong_Converter(PyObject *, void *);
-PyAPI_FUNC(int) _PyLong_Size_t_Converter(PyObject *, void *);
+PyAPI_FUNC(int) PyUnstable_Long_IsCompact(const PyLongObject* op);
+PyAPI_FUNC(Py_ssize_t) PyUnstable_Long_CompactValue(const PyLongObject* op);
 
-/* _PyLong_Frexp returns a double x and an exponent e such that the
-   true value is approximately equal to x * 2**e.  e is >= 0.  x is
-   0.0 if and only if the input is 0 (in which case, e and x are both
-   zeroes); otherwise, 0.5 <= abs(x) < 1.0.  On overflow, which is
-   possible if the number of bits doesn't fit into a Py_ssize_t, sets
-   OverflowError and returns -1.0 for x, 0 for e. */
-PyAPI_FUNC(double) _PyLong_Frexp(PyLongObject *a, Py_ssize_t *e);
-
-PyAPI_FUNC(PyObject *) PyLong_FromUnicodeObject(PyObject *u, int base);
-PyAPI_FUNC(PyObject *) _PyLong_FromBytes(const char *, Py_ssize_t, int);
-
-/* _PyLong_Sign.  Return 0 if v is 0, -1 if v < 0, +1 if v > 0.
-   v must not be NULL, and must be a normalized long.
-   There are no error cases.
-*/
+// _PyLong_Sign.  Return 0 if v is 0, -1 if v < 0, +1 if v > 0.
+// v must not be NULL, and must be a normalized long.
+// There are no error cases.
 PyAPI_FUNC(int) _PyLong_Sign(PyObject *v);
 
-/* _PyLong_NumBits.  Return the number of bits needed to represent the
-   absolute value of a long.  For example, this returns 1 for 1 and -1, 2
-   for 2 and -2, and 2 for 3 and -3.  It returns 0 for 0.
-   v must not be NULL, and must be a normalized long.
-   (size_t)-1 is returned and OverflowError set if the true result doesn't
-   fit in a size_t.
-*/
-PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
-
-/* _PyLong_DivmodNear.  Given integers a and b, compute the nearest
-   integer q to the exact quotient a / b, rounding to the nearest even integer
-   in the case of a tie.  Return (q, r), where r = a - q*b.  The remainder r
-   will satisfy abs(r) <= abs(b)/2, with equality possible only if q is
-   even.
-*/
-PyAPI_FUNC(PyObject *) _PyLong_DivmodNear(PyObject *, PyObject *);
-
 /* _PyLong_FromByteArray:  View the n unsigned bytes as a binary integer in
    base 256, and return a Python int with the same numeric value.
    If n is 0, the integer is 0.  Else:
@@ -84,12 +52,5 @@ PyAPI_FUNC(int) _PyLong_AsByteArray(PyLongObject* v,
     unsigned char* bytes, size_t n,
     int little_endian, int is_signed);
 
-/* _PyLong_Format: Convert the long to a string object with given base,
-   appending a base prefix of 0[box] if base is 2, 8 or 16. */
-PyAPI_FUNC(PyObject *) _PyLong_Format(PyObject *obj, int base);
-
 /* For use by the gcd function in mathmodule.c */
 PyAPI_FUNC(PyObject *) _PyLong_GCD(PyObject *, PyObject *);
-
-PyAPI_FUNC(PyObject *) _PyLong_Rshift(PyObject *, size_t);
-PyAPI_FUNC(PyObject *) _PyLong_Lshift(PyObject *, size_t);
diff --git a/Include/cpython/memoryobject.h b/Include/cpython/memoryobject.h
index 3837fa8c6ab5aa..961161b70f2058 100644
--- a/Include/cpython/memoryobject.h
+++ b/Include/cpython/memoryobject.h
@@ -2,8 +2,6 @@
 #  error "this header file must not be included directly"
 #endif
 
-PyAPI_DATA(PyTypeObject) _PyManagedBuffer_Type;
-
 /* The structs are declared here so that macros can work, but they shouldn't
    be considered public. Don't access their fields directly, use the macros
    and functions instead! */
diff --git a/Include/cpython/modsupport.h b/Include/cpython/modsupport.h
deleted file mode 100644
index 88f34fe7513bf2..00000000000000
--- a/Include/cpython/modsupport.h
+++ /dev/null
@@ -1,108 +0,0 @@
-#ifndef Py_CPYTHON_MODSUPPORT_H
-#  error "this header file must not be included directly"
-#endif
-
-/* If PY_SSIZE_T_CLEAN is defined, each functions treats #-specifier
-   to mean Py_ssize_t */
-#ifdef PY_SSIZE_T_CLEAN
-#define _Py_VaBuildStack                _Py_VaBuildStack_SizeT
-#else
-PyAPI_FUNC(PyObject *) _Py_VaBuildValue_SizeT(const char *, va_list);
-PyAPI_FUNC(PyObject **) _Py_VaBuildStack_SizeT(
-    PyObject **small_stack,
-    Py_ssize_t small_stack_len,
-    const char *format,
-    va_list va,
-    Py_ssize_t *p_nargs);
-#endif
-
-PyAPI_FUNC(int) _PyArg_UnpackStack(
-    PyObject *const *args,
-    Py_ssize_t nargs,
-    const char *name,
-    Py_ssize_t min,
-    Py_ssize_t max,
-    ...);
-
-PyAPI_FUNC(int) _PyArg_NoKeywords(const char *funcname, PyObject *kwargs);
-PyAPI_FUNC(int) _PyArg_NoKwnames(const char *funcname, PyObject *kwnames);
-PyAPI_FUNC(int) _PyArg_NoPositional(const char *funcname, PyObject *args);
-#define _PyArg_NoKeywords(funcname, kwargs) \
-    ((kwargs) == NULL || _PyArg_NoKeywords((funcname), (kwargs)))
-#define _PyArg_NoKwnames(funcname, kwnames) \
-    ((kwnames) == NULL || _PyArg_NoKwnames((funcname), (kwnames)))
-#define _PyArg_NoPositional(funcname, args) \
-    ((args) == NULL || _PyArg_NoPositional((funcname), (args)))
-
-#define _Py_ANY_VARARGS(n) ((n) == PY_SSIZE_T_MAX)
-
-PyAPI_FUNC(void) _PyArg_BadArgument(const char *, const char *, const char *, PyObject *);
-PyAPI_FUNC(int) _PyArg_CheckPositional(const char *, Py_ssize_t,
-                                       Py_ssize_t, Py_ssize_t);
-#define _PyArg_CheckPositional(funcname, nargs, min, max) \
-    ((!_Py_ANY_VARARGS(max) && (min) <= (nargs) && (nargs) <= (max)) \
-     || _PyArg_CheckPositional((funcname), (nargs), (min), (max)))
-
-PyAPI_FUNC(PyObject **) _Py_VaBuildStack(
-    PyObject **small_stack,
-    Py_ssize_t small_stack_len,
-    const char *format,
-    va_list va,
-    Py_ssize_t *p_nargs);
-
-typedef struct _PyArg_Parser {
-    int initialized;
-    const char *format;
-    const char * const *keywords;
-    const char *fname;
-    const char *custom_msg;
-    int pos;            /* number of positional-only arguments */
-    int min;            /* minimal number of arguments */
-    int max;            /* maximal number of positional arguments */
-    PyObject *kwtuple;  /* tuple of keyword parameter names */
-    struct _PyArg_Parser *next;
-} _PyArg_Parser;
-
-#ifdef PY_SSIZE_T_CLEAN
-#define _PyArg_ParseTupleAndKeywordsFast  _PyArg_ParseTupleAndKeywordsFast_SizeT
-#define _PyArg_ParseStack  _PyArg_ParseStack_SizeT
-#define _PyArg_ParseStackAndKeywords  _PyArg_ParseStackAndKeywords_SizeT
-#define _PyArg_VaParseTupleAndKeywordsFast  _PyArg_VaParseTupleAndKeywordsFast_SizeT
-#endif
-
-PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywordsFast(PyObject *, PyObject *,
-                                                 struct _PyArg_Parser *, ...);
-PyAPI_FUNC(int) _PyArg_ParseStack(
-    PyObject *const *args,
-    Py_ssize_t nargs,
-    const char *format,
-    ...);
-PyAPI_FUNC(int) _PyArg_ParseStackAndKeywords(
-    PyObject *const *args,
-    Py_ssize_t nargs,
-    PyObject *kwnames,
-    struct _PyArg_Parser *,
-    ...);
-PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywordsFast(PyObject *, PyObject *,
-                                                   struct _PyArg_Parser *, va_list);
-PyAPI_FUNC(PyObject * const *) _PyArg_UnpackKeywords(
-        PyObject *const *args, Py_ssize_t nargs,
-        PyObject *kwargs, PyObject *kwnames,
-        struct _PyArg_Parser *parser,
-        int minpos, int maxpos, int minkw,
-        PyObject **buf);
-
-PyAPI_FUNC(PyObject * const *) _PyArg_UnpackKeywordsWithVararg(
-        PyObject *const *args, Py_ssize_t nargs,
-        PyObject *kwargs, PyObject *kwnames,
-        struct _PyArg_Parser *parser,
-        int minpos, int maxpos, int minkw,
-        int vararg, PyObject **buf);
-
-#define _PyArg_UnpackKeywords(args, nargs, kwargs, kwnames, parser, minpos, maxpos, minkw, buf) \
-    (((minkw) == 0 && (kwargs) == NULL && (kwnames) == NULL && \
-      (minpos) <= (nargs) && (nargs) <= (maxpos) && (args) != NULL) ? (args) : \
-     _PyArg_UnpackKeywords((args), (nargs), (kwargs), (kwnames), (parser), \
-                           (minpos), (maxpos), (minkw), (buf)))
-
-PyAPI_FUNC(PyObject *) _PyModule_CreateInitialized(PyModuleDef*, int apiver);
diff --git a/Include/cpython/object.h b/Include/cpython/object.h
index d8eff691039d24..762e8a3b86ee1e 100644
--- a/Include/cpython/object.h
+++ b/Include/cpython/object.h
@@ -5,11 +5,6 @@
 PyAPI_FUNC(void) _Py_NewReference(PyObject *op);
 PyAPI_FUNC(void) _Py_NewReferenceNoTotal(PyObject *op);
 
-#ifdef Py_TRACE_REFS
-/* Py_TRACE_REFS is such major surgery that we call external routines. */
-PyAPI_FUNC(void) _Py_ForgetReference(PyObject *);
-#endif
-
 #ifdef Py_REF_DEBUG
 /* These are useful as debugging aids when chasing down refleaks. */
 PyAPI_FUNC(Py_ssize_t) _Py_GetGlobalRefTotal(void);
@@ -56,6 +51,7 @@ typedef struct _Py_Identifier {
 
 #endif /* !Py_BUILD_CORE */
 
+
 typedef struct {
     /* Number implementations must check *both*
        arguments for proper type and implement the necessary conversions
@@ -227,11 +223,11 @@ struct _typeobject {
     vectorcallfunc tp_vectorcall;
 
     /* bitset of which type-watchers care about this type */
-    char tp_watched;
+    unsigned char tp_watched;
 };
 
 /* This struct is used by the specializer
- * It should should be treated as an opaque blob
+ * It should be treated as an opaque blob
  * by code other than the specializer and interpreter. */
 struct _specialization_cache {
     // In order to avoid bloating the bytecode with lots of inline caches, the
@@ -246,6 +242,7 @@ struct _specialization_cache {
     //   *args nor **kwargs (as required by BINARY_SUBSCR_GETITEM):
     PyObject *getitem;
     uint32_t getitem_version;
+    PyObject *init;
 };
 
 /* The *real* layout of a type object when allocated on the heap */
@@ -272,42 +269,16 @@ typedef struct _heaptypeobject {
 
 PyAPI_FUNC(const char *) _PyType_Name(PyTypeObject *);
 PyAPI_FUNC(PyObject *) _PyType_Lookup(PyTypeObject *, PyObject *);
-PyAPI_FUNC(PyObject *) _PyType_LookupId(PyTypeObject *, _Py_Identifier *);
-PyAPI_FUNC(PyObject *) _PyObject_LookupSpecialId(PyObject *, _Py_Identifier *);
-#ifndef Py_BUILD_CORE
-// Backward compatibility for 3rd-party extensions
-// that may be using the old name.
-#define _PyObject_LookupSpecial _PyObject_LookupSpecialId
-#endif
-PyAPI_FUNC(PyTypeObject *) _PyType_CalculateMetaclass(PyTypeObject *, PyObject *);
-PyAPI_FUNC(PyObject *) _PyType_GetDocFromInternalDoc(const char *, const char *);
-PyAPI_FUNC(PyObject *) _PyType_GetTextSignatureFromInternalDoc(const char *, const char *);
 PyAPI_FUNC(PyObject *) PyType_GetModuleByDef(PyTypeObject *, PyModuleDef *);
+PyAPI_FUNC(PyObject *) PyType_GetDict(PyTypeObject *);
 
 PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);
 PyAPI_FUNC(void) _Py_BreakPoint(void);
 PyAPI_FUNC(void) _PyObject_Dump(PyObject *);
-PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *);
-
-PyAPI_FUNC(int) _PyObject_IsAbstract(PyObject *);
-PyAPI_FUNC(PyObject *) _PyObject_GetAttrId(PyObject *, _Py_Identifier *);
-PyAPI_FUNC(int) _PyObject_SetAttrId(PyObject *, _Py_Identifier *, PyObject *);
-/* Replacements of PyObject_GetAttr() and _PyObject_GetAttrId() which
-   don't raise AttributeError.
-
-   Return 1 and set *result != NULL if an attribute is found.
-   Return 0 and set *result == NULL if an attribute is not found;
-   an AttributeError is silenced.
-   Return -1 and set *result == NULL if an error other than AttributeError
-   is raised.
-*/
-PyAPI_FUNC(int) _PyObject_LookupAttr(PyObject *, PyObject *, PyObject **);
-PyAPI_FUNC(int) _PyObject_LookupAttrId(PyObject *, _Py_Identifier *, PyObject **);
 
-PyAPI_FUNC(int) _PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method);
+PyAPI_FUNC(PyObject*) _PyObject_GetAttrId(PyObject *, _Py_Identifier *);
 
 PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *);
-PyAPI_FUNC(PyObject *) _PyObject_NextNotImplemented(PyObject *);
 PyAPI_FUNC(void) PyObject_CallFinalizer(PyObject *);
 PyAPI_FUNC(int) PyObject_CallFinalizerFromDealloc(PyObject *);
 
@@ -386,20 +357,6 @@ PyAPI_FUNC(PyObject *) _PyObject_FunctionStr(PyObject *);
 #endif
 
 
-PyAPI_DATA(PyTypeObject) _PyNone_Type;
-PyAPI_DATA(PyTypeObject) _PyNotImplemented_Type;
-
-/* Maps Py_LT to Py_GT, ..., Py_GE to Py_LE.
- * Defined in object.c.
- */
-PyAPI_DATA(int) _Py_SwappedOp[];
-
-PyAPI_FUNC(void)
-_PyDebugAllocatorStats(FILE *out, const char *block_name, int num_blocks,
-                       size_t sizeof_block);
-PyAPI_FUNC(void)
-_PyObject_DebugTypeStats(FILE *out);
-
 /* Define a pair of assertion macros:
    _PyObject_ASSERT_FROM(), _PyObject_ASSERT_WITH_MSG() and _PyObject_ASSERT().
 
@@ -448,21 +405,6 @@ PyAPI_FUNC(void) _Py_NO_RETURN _PyObject_AssertFailed(
     int line,
     const char *function);
 
-/* Check if an object is consistent. For example, ensure that the reference
-   counter is greater than or equal to 1, and ensure that ob_type is not NULL.
-
-   Call _PyObject_AssertFailed() if the object is inconsistent.
-
-   If check_content is zero, only check header fields: reduce the overhead.
-
-   The function always return 1. The return value is just here to be able to
-   write:
-
-   assert(_PyObject_CheckConsistency(obj, 1)); */
-PyAPI_FUNC(int) _PyObject_CheckConsistency(
-    PyObject *op,
-    int check_content);
-
 
 /* Trashcan mechanism, thanks to Christian Tismer.
 
@@ -523,7 +465,7 @@ PyAPI_FUNC(int) _PyTrash_cond(PyObject *op, destructor dealloc);
         /* If "cond" is false, then _tstate remains NULL and the deallocator \
          * is run normally without involving the trashcan */ \
         if (cond) { \
-            _tstate = _PyThreadState_UncheckedGet(); \
+            _tstate = PyThreadState_GetUnchecked(); \
             if (_PyTrash_begin(_tstate, _PyObject_CAST(op))) { \
                 break; \
             } \
@@ -539,24 +481,11 @@ PyAPI_FUNC(int) _PyTrash_cond(PyObject *op, destructor dealloc);
     Py_TRASHCAN_BEGIN_CONDITION((op), \
         _PyTrash_cond(_PyObject_CAST(op), (destructor)(dealloc)))
 
-/* The following two macros, Py_TRASHCAN_SAFE_BEGIN and
- * Py_TRASHCAN_SAFE_END, are deprecated since version 3.11 and
- * will be removed in the future.
- * Use Py_TRASHCAN_BEGIN and Py_TRASHCAN_END instead.
- */
-Py_DEPRECATED(3.11) typedef int UsingDeprecatedTrashcanMacro;
-#define Py_TRASHCAN_SAFE_BEGIN(op) \
-    do { \
-        UsingDeprecatedTrashcanMacro cond=1; \
-        Py_TRASHCAN_BEGIN_CONDITION((op), cond);
-#define Py_TRASHCAN_SAFE_END(op) \
-        Py_TRASHCAN_END; \
-    } while(0);
 
 PyAPI_FUNC(void *) PyObject_GetItemData(PyObject *obj);
 
-PyAPI_FUNC(int) _PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg);
-PyAPI_FUNC(void) _PyObject_ClearManagedDict(PyObject *obj);
+PyAPI_FUNC(int) PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg);
+PyAPI_FUNC(void) PyObject_ClearManagedDict(PyObject *obj);
 
 #define TYPE_MAX_WATCHERS 8
 
diff --git a/Include/cpython/objimpl.h b/Include/cpython/objimpl.h
index 5a8cdd57c7845b..58a30aeea6ac64 100644
--- a/Include/cpython/objimpl.h
+++ b/Include/cpython/objimpl.h
@@ -78,14 +78,6 @@ PyAPI_FUNC(void) PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator);
 PyAPI_FUNC(int) PyObject_IS_GC(PyObject *obj);
 
 
-/* Code built with Py_BUILD_CORE must include pycore_gc.h instead which
-   defines a different _PyGC_FINALIZED() macro. */
-#ifndef Py_BUILD_CORE
-   // Kept for backward compatibility with Python 3.8
-#  define _PyGC_FINALIZED(o) PyObject_GC_IsFinalized(o)
-#endif
-
-
 // Test if a type supports weak references
 PyAPI_FUNC(int) PyType_SUPPORTS_WEAKREFS(PyTypeObject *type);
 
diff --git a/Include/cpython/optimizer.h b/Include/cpython/optimizer.h
new file mode 100644
index 00000000000000..adc2c1fc442280
--- /dev/null
+++ b/Include/cpython/optimizer.h
@@ -0,0 +1,88 @@
+
+#ifndef Py_LIMITED_API
+#ifndef Py_OPTIMIZER_H
+#define Py_OPTIMIZER_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _PyExecutorLinkListNode {
+    struct _PyExecutorObject *next;
+    struct _PyExecutorObject *previous;
+} _PyExecutorLinkListNode;
+
+
+/* Bloom filter with m = 256
+ * https://en.wikipedia.org/wiki/Bloom_filter */
+#define BLOOM_FILTER_WORDS 8
+
+typedef struct _bloom_filter {
+    uint32_t bits[BLOOM_FILTER_WORDS];
+} _PyBloomFilter;
+
+typedef struct {
+    uint8_t opcode;
+    uint8_t oparg;
+    uint8_t valid;
+    uint8_t linked;
+    _PyBloomFilter bloom;
+    _PyExecutorLinkListNode links;
+} _PyVMData;
+
+typedef struct _PyExecutorObject {
+    PyObject_VAR_HEAD
+    /* WARNING: execute consumes a reference to self. This is necessary to allow executors to tail call into each other. */
+    struct _PyInterpreterFrame *(*execute)(struct _PyExecutorObject *self, struct _PyInterpreterFrame *frame, PyObject **stack_pointer);
+    _PyVMData vm_data; /* Used by the VM, but opaque to the optimizer */
+    /* Data needed by the executor goes here, but is opaque to the VM */
+} _PyExecutorObject;
+
+typedef struct _PyOptimizerObject _PyOptimizerObject;
+
+/* Should return > 0 if a new executor is created. O if no executor is produced and < 0 if an error occurred. */
+typedef int (*optimize_func)(_PyOptimizerObject* self, PyCodeObject *code, _Py_CODEUNIT *instr, _PyExecutorObject **, int curr_stackentries);
+
+typedef struct _PyOptimizerObject {
+    PyObject_HEAD
+    optimize_func optimize;
+    /* These thresholds are treated as signed so do not exceed INT16_MAX
+     * Use INT16_MAX to indicate that the optimizer should never be called */
+    uint16_t resume_threshold;
+    uint16_t backedge_threshold;
+    /* Data needed by the optimizer goes here, but is opaque to the VM */
+} _PyOptimizerObject;
+
+PyAPI_FUNC(int) PyUnstable_Replace_Executor(PyCodeObject *code, _Py_CODEUNIT *instr, _PyExecutorObject *executor);
+
+PyAPI_FUNC(void) PyUnstable_SetOptimizer(_PyOptimizerObject* optimizer);
+
+PyAPI_FUNC(_PyOptimizerObject *) PyUnstable_GetOptimizer(void);
+
+PyAPI_FUNC(_PyExecutorObject *) PyUnstable_GetExecutor(PyCodeObject *code, int offset);
+
+int
+_PyOptimizer_BackEdge(struct _PyInterpreterFrame *frame, _Py_CODEUNIT *src, _Py_CODEUNIT *dest, PyObject **stack_pointer);
+
+extern _PyOptimizerObject _PyOptimizer_Default;
+
+void _Py_ExecutorInit(_PyExecutorObject *, _PyBloomFilter *);
+void _Py_ExecutorClear(_PyExecutorObject *);
+void _Py_BloomFilter_Init(_PyBloomFilter *);
+void _Py_BloomFilter_Add(_PyBloomFilter *bloom, void *obj);
+PyAPI_FUNC(void) _Py_Executor_DependsOn(_PyExecutorObject *executor, void *obj);
+PyAPI_FUNC(void) _Py_Executors_InvalidateDependency(PyInterpreterState *interp, void *obj);
+extern void _Py_Executors_InvalidateAll(PyInterpreterState *interp);
+
+/* For testing */
+PyAPI_FUNC(PyObject *)PyUnstable_Optimizer_NewCounter(void);
+PyAPI_FUNC(PyObject *)PyUnstable_Optimizer_NewUOpOptimizer(void);
+
+#define OPTIMIZER_BITS_IN_COUNTER 4
+/* Minimum of 16 additional executions before retry */
+#define MINIMUM_TIER2_BACKOFF 4
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_OPTIMIZER_H */
+#endif /* Py_LIMITED_API */
diff --git a/Include/cpython/pthread_stubs.h b/Include/cpython/pthread_stubs.h
index d95ee03d8308ce..e542eaa5bff0cf 100644
--- a/Include/cpython/pthread_stubs.h
+++ b/Include/cpython/pthread_stubs.h
@@ -21,13 +21,29 @@
 #ifdef __wasi__
 // WASI's bits/alltypes.h provides type definitions when __NEED_ is set.
 // The header file can be included multiple times.
-#  define __NEED_pthread_cond_t 1
-#  define __NEED_pthread_condattr_t 1
-#  define __NEED_pthread_mutex_t 1
-#  define __NEED_pthread_mutexattr_t 1
-#  define __NEED_pthread_key_t 1
-#  define __NEED_pthread_t 1
-#  define __NEED_pthread_attr_t 1
+//
+// <sys/types.h> may also define these macros.
+#  ifndef __NEED_pthread_cond_t
+#    define __NEED_pthread_cond_t 1
+#  endif
+#  ifndef __NEED_pthread_condattr_t
+#    define __NEED_pthread_condattr_t 1
+#  endif
+#  ifndef __NEED_pthread_mutex_t
+#    define __NEED_pthread_mutex_t 1
+#  endif
+#  ifndef __NEED_pthread_mutexattr_t
+#    define __NEED_pthread_mutexattr_t 1
+#  endif
+#  ifndef __NEED_pthread_key_t
+#    define __NEED_pthread_key_t 1
+#  endif
+#  ifndef __NEED_pthread_t
+#    define __NEED_pthread_t 1
+#  endif
+#  ifndef __NEED_pthread_attr_t
+#    define __NEED_pthread_attr_t 1
+#  endif
 #  include <bits/alltypes.h>
 #else
 typedef struct { void *__x; } pthread_cond_t;
@@ -67,6 +83,7 @@ PyAPI_FUNC(int) pthread_create(pthread_t *restrict thread,
                                void *(*start_routine)(void *),
                                void *restrict arg);
 PyAPI_FUNC(int) pthread_detach(pthread_t thread);
+PyAPI_FUNC(int) pthread_join(pthread_t thread, void** value_ptr);
 PyAPI_FUNC(pthread_t) pthread_self(void);
 PyAPI_FUNC(int) pthread_exit(void *retval) __attribute__ ((__noreturn__));
 PyAPI_FUNC(int) pthread_attr_init(pthread_attr_t *attr);
diff --git a/Include/cpython/pyatomic.h b/Include/cpython/pyatomic.h
new file mode 100644
index 00000000000000..5314a70436bfc3
--- /dev/null
+++ b/Include/cpython/pyatomic.h
@@ -0,0 +1,534 @@
+// This header provides cross-platform low-level atomic operations
+// similar to C11 atomics.
+//
+// Operations are sequentially consistent unless they have a suffix indicating
+// otherwise. If in doubt, prefer the sequentially consistent operations.
+//
+// The "_relaxed" suffix for load and store operations indicates the "relaxed"
+// memory order. They don't provide synchronization, but (roughly speaking)
+// guarantee somewhat sane behavior for races instead of undefined behavior.
+// In practice, they correspond to "normal" hardware load and store
+// instructions, so they are almost as inexpensive as plain loads and stores
+// in C.
+//
+// Note that atomic read-modify-write operations like _Py_atomic_add_* return
+// the previous value of the atomic variable, not the new value.
+//
+// See https://en.cppreference.com/w/c/atomic for more information on C11
+// atomics.
+// See https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2055r0.pdf
+// "A Relaxed Guide to memory_order_relaxed" for discussion of and common usage
+// or relaxed atomics.
+//
+// Functions with pseudo Python code:
+//
+//   def _Py_atomic_load(obj):
+//        return obj  # sequential consistency
+//
+//   def _Py_atomic_load_relaxed(obj):
+//       return obj  # relaxed consistency
+//
+//   def _Py_atomic_store(obj, value):
+//       obj = value  # sequential consistency
+//
+//   def _Py_atomic_store_relaxed(obj, value):
+//       obj = value  # relaxed consistency
+//
+//   def _Py_atomic_exchange(obj, value):
+//       # sequential consistency
+//       old_obj = obj
+//       obj = value
+//       return old_obj
+//
+//   def _Py_atomic_compare_exchange(obj, expected, desired):
+//       # sequential consistency
+//       if obj == expected:
+//           obj = desired
+//           return True
+//       else:
+//           expected = obj
+//           return False
+//
+//   def _Py_atomic_add(obj, value):
+//       # sequential consistency
+//       old_obj = obj
+//       obj += value
+//       return old_obj
+//
+//   def _Py_atomic_and(obj, value):
+//       # sequential consistency
+//       old_obj = obj
+//       obj &= value
+//       return old_obj
+//
+//   def _Py_atomic_or(obj, value):
+//       # sequential consistency
+//       old_obj = obj
+//       obj |= value
+//       return old_obj
+//
+// Other functions:
+//
+//   def _Py_atomic_load_ptr_acquire(obj):
+//       return obj  # acquire
+//
+//   def _Py_atomic_store_ptr_release(obj):
+//       return obj  # release
+//
+//   def _Py_atomic_fence_seq_cst():
+//       # sequential consistency
+//       ...
+//
+//   def _Py_atomic_fence_release():
+//       # release
+//       ...
+
+#ifndef Py_CPYTHON_ATOMIC_H
+#  error "this header file must not be included directly"
+#endif
+
+// --- _Py_atomic_add --------------------------------------------------------
+// Atomically adds `value` to `obj` and returns the previous value
+
+static inline int
+_Py_atomic_add_int(int *obj, int value);
+
+static inline int8_t
+_Py_atomic_add_int8(int8_t *obj, int8_t value);
+
+static inline int16_t
+_Py_atomic_add_int16(int16_t *obj, int16_t value);
+
+static inline int32_t
+_Py_atomic_add_int32(int32_t *obj, int32_t value);
+
+static inline int64_t
+_Py_atomic_add_int64(int64_t *obj, int64_t value);
+
+static inline intptr_t
+_Py_atomic_add_intptr(intptr_t *obj, intptr_t value);
+
+static inline unsigned int
+_Py_atomic_add_uint(unsigned int *obj, unsigned int value);
+
+static inline uint8_t
+_Py_atomic_add_uint8(uint8_t *obj, uint8_t value);
+
+static inline uint16_t
+_Py_atomic_add_uint16(uint16_t *obj, uint16_t value);
+
+static inline uint32_t
+_Py_atomic_add_uint32(uint32_t *obj, uint32_t value);
+
+static inline uint64_t
+_Py_atomic_add_uint64(uint64_t *obj, uint64_t value);
+
+static inline uintptr_t
+_Py_atomic_add_uintptr(uintptr_t *obj, uintptr_t value);
+
+static inline Py_ssize_t
+_Py_atomic_add_ssize(Py_ssize_t *obj, Py_ssize_t value);
+
+
+// --- _Py_atomic_compare_exchange -------------------------------------------
+// Performs an atomic compare-and-exchange.
+//
+// - If `*obj` and `*expected` are equal, store `desired` into `*obj`
+//   and return 1 (success).
+// - Otherwise, store the `*obj` current value into `*expected`
+//   and return 0 (failure).
+//
+// These correspond to the C11 atomic_compare_exchange_strong() function.
+
+static inline int
+_Py_atomic_compare_exchange_int(int *obj, int *expected, int desired);
+
+static inline int
+_Py_atomic_compare_exchange_int8(int8_t *obj, int8_t *expected, int8_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_int16(int16_t *obj, int16_t *expected, int16_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_int32(int32_t *obj, int32_t *expected, int32_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_int64(int64_t *obj, int64_t *expected, int64_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_intptr(intptr_t *obj, intptr_t *expected, intptr_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_uint(unsigned int *obj, unsigned int *expected, unsigned int desired);
+
+static inline int
+_Py_atomic_compare_exchange_uint8(uint8_t *obj, uint8_t *expected, uint8_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_uint16(uint16_t *obj, uint16_t *expected, uint16_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_uint32(uint32_t *obj, uint32_t *expected, uint32_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_uint64(uint64_t *obj, uint64_t *expected, uint64_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_uintptr(uintptr_t *obj, uintptr_t *expected, uintptr_t desired);
+
+static inline int
+_Py_atomic_compare_exchange_ssize(Py_ssize_t *obj, Py_ssize_t *expected, Py_ssize_t desired);
+
+// NOTE: `obj` and `expected` are logically `void**` types, but we use `void*`
+// so that we can pass types like `PyObject**` without a cast.
+static inline int
+_Py_atomic_compare_exchange_ptr(void *obj, void *expected, void *value);
+
+
+// --- _Py_atomic_exchange ---------------------------------------------------
+// Atomically replaces `*obj` with `value` and returns the previous value of `*obj`.
+
+static inline int
+_Py_atomic_exchange_int(int *obj, int value);
+
+static inline int8_t
+_Py_atomic_exchange_int8(int8_t *obj, int8_t value);
+
+static inline int16_t
+_Py_atomic_exchange_int16(int16_t *obj, int16_t value);
+
+static inline int32_t
+_Py_atomic_exchange_int32(int32_t *obj, int32_t value);
+
+static inline int64_t
+_Py_atomic_exchange_int64(int64_t *obj, int64_t value);
+
+static inline intptr_t
+_Py_atomic_exchange_intptr(intptr_t *obj, intptr_t value);
+
+static inline unsigned int
+_Py_atomic_exchange_uint(unsigned int *obj, unsigned int value);
+
+static inline uint8_t
+_Py_atomic_exchange_uint8(uint8_t *obj, uint8_t value);
+
+static inline uint16_t
+_Py_atomic_exchange_uint16(uint16_t *obj, uint16_t value);
+
+static inline uint32_t
+_Py_atomic_exchange_uint32(uint32_t *obj, uint32_t value);
+
+static inline uint64_t
+_Py_atomic_exchange_uint64(uint64_t *obj, uint64_t value);
+
+static inline uintptr_t
+_Py_atomic_exchange_uintptr(uintptr_t *obj, uintptr_t value);
+
+static inline Py_ssize_t
+_Py_atomic_exchange_ssize(Py_ssize_t *obj, Py_ssize_t value);
+
+static inline void *
+_Py_atomic_exchange_ptr(void *obj, void *value);
+
+
+// --- _Py_atomic_and --------------------------------------------------------
+// Performs `*obj &= value` atomically and returns the previous value of `*obj`.
+
+static inline uint8_t
+_Py_atomic_and_uint8(uint8_t *obj, uint8_t value);
+
+static inline uint16_t
+_Py_atomic_and_uint16(uint16_t *obj, uint16_t value);
+
+static inline uint32_t
+_Py_atomic_and_uint32(uint32_t *obj, uint32_t value);
+
+static inline uint64_t
+_Py_atomic_and_uint64(uint64_t *obj, uint64_t value);
+
+static inline uintptr_t
+_Py_atomic_and_uintptr(uintptr_t *obj, uintptr_t value);
+
+
+// --- _Py_atomic_or ---------------------------------------------------------
+// Performs `*obj |= value` atomically and returns the previous value of `*obj`.
+
+static inline uint8_t
+_Py_atomic_or_uint8(uint8_t *obj, uint8_t value);
+
+static inline uint16_t
+_Py_atomic_or_uint16(uint16_t *obj, uint16_t value);
+
+static inline uint32_t
+_Py_atomic_or_uint32(uint32_t *obj, uint32_t value);
+
+static inline uint64_t
+_Py_atomic_or_uint64(uint64_t *obj, uint64_t value);
+
+static inline uintptr_t
+_Py_atomic_or_uintptr(uintptr_t *obj, uintptr_t value);
+
+
+// --- _Py_atomic_load -------------------------------------------------------
+// Atomically loads `*obj` (sequential consistency)
+
+static inline int
+_Py_atomic_load_int(const int *obj);
+
+static inline int8_t
+_Py_atomic_load_int8(const int8_t *obj);
+
+static inline int16_t
+_Py_atomic_load_int16(const int16_t *obj);
+
+static inline int32_t
+_Py_atomic_load_int32(const int32_t *obj);
+
+static inline int64_t
+_Py_atomic_load_int64(const int64_t *obj);
+
+static inline intptr_t
+_Py_atomic_load_intptr(const intptr_t *obj);
+
+static inline uint8_t
+_Py_atomic_load_uint8(const uint8_t *obj);
+
+static inline uint16_t
+_Py_atomic_load_uint16(const uint16_t *obj);
+
+static inline uint32_t
+_Py_atomic_load_uint32(const uint32_t *obj);
+
+static inline uint64_t
+_Py_atomic_load_uint64(const uint64_t *obj);
+
+static inline uintptr_t
+_Py_atomic_load_uintptr(const uintptr_t *obj);
+
+static inline unsigned int
+_Py_atomic_load_uint(const unsigned int *obj);
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize(const Py_ssize_t *obj);
+
+static inline void *
+_Py_atomic_load_ptr(const void *obj);
+
+
+// --- _Py_atomic_load_relaxed -----------------------------------------------
+// Loads `*obj` (relaxed consistency, i.e., no ordering)
+
+static inline int
+_Py_atomic_load_int_relaxed(const int *obj);
+
+static inline int8_t
+_Py_atomic_load_int8_relaxed(const int8_t *obj);
+
+static inline int16_t
+_Py_atomic_load_int16_relaxed(const int16_t *obj);
+
+static inline int32_t
+_Py_atomic_load_int32_relaxed(const int32_t *obj);
+
+static inline int64_t
+_Py_atomic_load_int64_relaxed(const int64_t *obj);
+
+static inline intptr_t
+_Py_atomic_load_intptr_relaxed(const intptr_t *obj);
+
+static inline uint8_t
+_Py_atomic_load_uint8_relaxed(const uint8_t *obj);
+
+static inline uint16_t
+_Py_atomic_load_uint16_relaxed(const uint16_t *obj);
+
+static inline uint32_t
+_Py_atomic_load_uint32_relaxed(const uint32_t *obj);
+
+static inline uint64_t
+_Py_atomic_load_uint64_relaxed(const uint64_t *obj);
+
+static inline uintptr_t
+_Py_atomic_load_uintptr_relaxed(const uintptr_t *obj);
+
+static inline unsigned int
+_Py_atomic_load_uint_relaxed(const unsigned int *obj);
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize_relaxed(const Py_ssize_t *obj);
+
+static inline void *
+_Py_atomic_load_ptr_relaxed(const void *obj);
+
+
+// --- _Py_atomic_store ------------------------------------------------------
+// Atomically performs `*obj = value` (sequential consistency)
+
+static inline void
+_Py_atomic_store_int(int *obj, int value);
+
+static inline void
+_Py_atomic_store_int8(int8_t *obj, int8_t value);
+
+static inline void
+_Py_atomic_store_int16(int16_t *obj, int16_t value);
+
+static inline void
+_Py_atomic_store_int32(int32_t *obj, int32_t value);
+
+static inline void
+_Py_atomic_store_int64(int64_t *obj, int64_t value);
+
+static inline void
+_Py_atomic_store_intptr(intptr_t *obj, intptr_t value);
+
+static inline void
+_Py_atomic_store_uint8(uint8_t *obj, uint8_t value);
+
+static inline void
+_Py_atomic_store_uint16(uint16_t *obj, uint16_t value);
+
+static inline void
+_Py_atomic_store_uint32(uint32_t *obj, uint32_t value);
+
+static inline void
+_Py_atomic_store_uint64(uint64_t *obj, uint64_t value);
+
+static inline void
+_Py_atomic_store_uintptr(uintptr_t *obj, uintptr_t value);
+
+static inline void
+_Py_atomic_store_uint(unsigned int *obj, unsigned int value);
+
+static inline void
+_Py_atomic_store_ptr(void *obj, void *value);
+
+static inline void
+_Py_atomic_store_ssize(Py_ssize_t* obj, Py_ssize_t value);
+
+
+// --- _Py_atomic_store_relaxed ----------------------------------------------
+// Stores `*obj = value` (relaxed consistency, i.e., no ordering)
+
+static inline void
+_Py_atomic_store_int_relaxed(int *obj, int value);
+
+static inline void
+_Py_atomic_store_int8_relaxed(int8_t *obj, int8_t value);
+
+static inline void
+_Py_atomic_store_int16_relaxed(int16_t *obj, int16_t value);
+
+static inline void
+_Py_atomic_store_int32_relaxed(int32_t *obj, int32_t value);
+
+static inline void
+_Py_atomic_store_int64_relaxed(int64_t *obj, int64_t value);
+
+static inline void
+_Py_atomic_store_intptr_relaxed(intptr_t *obj, intptr_t value);
+
+static inline void
+_Py_atomic_store_uint8_relaxed(uint8_t* obj, uint8_t value);
+
+static inline void
+_Py_atomic_store_uint16_relaxed(uint16_t *obj, uint16_t value);
+
+static inline void
+_Py_atomic_store_uint32_relaxed(uint32_t *obj, uint32_t value);
+
+static inline void
+_Py_atomic_store_uint64_relaxed(uint64_t *obj, uint64_t value);
+
+static inline void
+_Py_atomic_store_uintptr_relaxed(uintptr_t *obj, uintptr_t value);
+
+static inline void
+_Py_atomic_store_uint_relaxed(unsigned int *obj, unsigned int value);
+
+static inline void
+_Py_atomic_store_ptr_relaxed(void *obj, void *value);
+
+static inline void
+_Py_atomic_store_ssize_relaxed(Py_ssize_t *obj, Py_ssize_t value);
+
+
+// --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
+
+// Loads `*obj` (acquire operation)
+static inline void *
+_Py_atomic_load_ptr_acquire(const void *obj);
+
+// Stores `*obj = value` (release operation)
+static inline void
+_Py_atomic_store_ptr_release(void *obj, void *value);
+
+static inline void
+_Py_atomic_store_int_release(int *obj, int value);
+
+static inline int
+_Py_atomic_load_int_acquire(const int *obj);
+
+
+// --- _Py_atomic_fence ------------------------------------------------------
+
+// Sequential consistency fence. C11 fences have complex semantics. When
+// possible, use the atomic operations on variables defined above, which
+// generally do not require explicit use of a fence.
+// See https://en.cppreference.com/w/cpp/atomic/atomic_thread_fence
+static inline void _Py_atomic_fence_seq_cst(void);
+
+// Release fence
+static inline void _Py_atomic_fence_release(void);
+
+
+#ifndef _Py_USE_GCC_BUILTIN_ATOMICS
+#  if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
+#    define _Py_USE_GCC_BUILTIN_ATOMICS 1
+#  elif defined(__clang__)
+#    if __has_builtin(__atomic_load)
+#      define _Py_USE_GCC_BUILTIN_ATOMICS 1
+#    endif
+#  endif
+#endif
+
+#if _Py_USE_GCC_BUILTIN_ATOMICS
+#  define Py_ATOMIC_GCC_H
+#  include "cpython/pyatomic_gcc.h"
+#  undef Py_ATOMIC_GCC_H
+#elif __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_ATOMICS__)
+#  define Py_ATOMIC_STD_H
+#  include "cpython/pyatomic_std.h"
+#  undef Py_ATOMIC_STD_H
+#elif defined(_MSC_VER)
+#  define Py_ATOMIC_MSC_H
+#  include "cpython/pyatomic_msc.h"
+#  undef Py_ATOMIC_MSC_H
+#else
+#  error "no available pyatomic implementation for this platform/compiler"
+#endif
+
+
+// --- aliases ---------------------------------------------------------------
+
+#if SIZEOF_LONG == 8
+# define _Py_atomic_load_ulong(p) \
+    _Py_atomic_load_uint64((uint64_t *)p)
+# define _Py_atomic_load_ulong_relaxed(p) \
+    _Py_atomic_load_uint64_relaxed((uint64_t *)p)
+# define _Py_atomic_store_ulong(p, v) \
+    _Py_atomic_store_uint64((uint64_t *)p, v)
+# define _Py_atomic_store_ulong_relaxed(p, v) \
+    _Py_atomic_store_uint64_relaxed((uint64_t *)p, v)
+#elif SIZEOF_LONG == 4
+# define _Py_atomic_load_ulong(p) \
+    _Py_atomic_load_uint32((uint32_t *)p)
+# define _Py_atomic_load_ulong_relaxed(p) \
+    _Py_atomic_load_uint32_relaxed((uint32_t *)p)
+# define _Py_atomic_store_ulong(p, v) \
+    _Py_atomic_store_uint32((uint32_t *)p, v)
+# define _Py_atomic_store_ulong_relaxed(p, v) \
+    _Py_atomic_store_uint32_relaxed((uint32_t *)p, v)
+#else
+# error "long must be 4 or 8 bytes in size"
+#endif  // SIZEOF_LONG
diff --git a/Include/cpython/pyatomic_gcc.h b/Include/cpython/pyatomic_gcc.h
new file mode 100644
index 00000000000000..70f2b7e1b5706a
--- /dev/null
+++ b/Include/cpython/pyatomic_gcc.h
@@ -0,0 +1,507 @@
+// This is the implementation of Python atomic operations using GCC's built-in
+// functions that match the C+11 memory model. This implementation is preferred
+// for GCC compatible compilers, such as Clang. These functions are available
+// in GCC 4.8+ without needing to compile with --std=c11 or --std=gnu11.
+
+#ifndef Py_ATOMIC_GCC_H
+#  error "this header file must not be included directly"
+#endif
+
+
+// --- _Py_atomic_add --------------------------------------------------------
+
+static inline int
+_Py_atomic_add_int(int *obj, int value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int8_t
+_Py_atomic_add_int8(int8_t *obj, int8_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int16_t
+_Py_atomic_add_int16(int16_t *obj, int16_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int32_t
+_Py_atomic_add_int32(int32_t *obj, int32_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int64_t
+_Py_atomic_add_int64(int64_t *obj, int64_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline intptr_t
+_Py_atomic_add_intptr(intptr_t *obj, intptr_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline unsigned int
+_Py_atomic_add_uint(unsigned int *obj, unsigned int value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint8_t
+_Py_atomic_add_uint8(uint8_t *obj, uint8_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint16_t
+_Py_atomic_add_uint16(uint16_t *obj, uint16_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint32_t
+_Py_atomic_add_uint32(uint32_t *obj, uint32_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint64_t
+_Py_atomic_add_uint64(uint64_t *obj, uint64_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uintptr_t
+_Py_atomic_add_uintptr(uintptr_t *obj, uintptr_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline Py_ssize_t
+_Py_atomic_add_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{ return __atomic_fetch_add(obj, value, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_compare_exchange -------------------------------------------
+
+static inline int
+_Py_atomic_compare_exchange_int(int *obj, int *expected, int desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_int8(int8_t *obj, int8_t *expected, int8_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_int16(int16_t *obj, int16_t *expected, int16_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_int32(int32_t *obj, int32_t *expected, int32_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_int64(int64_t *obj, int64_t *expected, int64_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_intptr(intptr_t *obj, intptr_t *expected, intptr_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_uint(unsigned int *obj, unsigned int *expected, unsigned int desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_uint8(uint8_t *obj, uint8_t *expected, uint8_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_uint16(uint16_t *obj, uint16_t *expected, uint16_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_uint32(uint32_t *obj, uint32_t *expected, uint32_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_uint64(uint64_t *obj, uint64_t *expected, uint64_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_uintptr(uintptr_t *obj, uintptr_t *expected, uintptr_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_ssize(Py_ssize_t *obj, Py_ssize_t *expected, Py_ssize_t desired)
+{ return __atomic_compare_exchange_n(obj, expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+static inline int
+_Py_atomic_compare_exchange_ptr(void *obj, void *expected, void *desired)
+{ return __atomic_compare_exchange_n((void **)obj, (void **)expected, desired, 0,
+                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_exchange ---------------------------------------------------
+
+static inline int
+_Py_atomic_exchange_int(int *obj, int value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int8_t
+_Py_atomic_exchange_int8(int8_t *obj, int8_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int16_t
+_Py_atomic_exchange_int16(int16_t *obj, int16_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int32_t
+_Py_atomic_exchange_int32(int32_t *obj, int32_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline int64_t
+_Py_atomic_exchange_int64(int64_t *obj, int64_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline intptr_t
+_Py_atomic_exchange_intptr(intptr_t *obj, intptr_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline unsigned int
+_Py_atomic_exchange_uint(unsigned int *obj, unsigned int value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint8_t
+_Py_atomic_exchange_uint8(uint8_t *obj, uint8_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint16_t
+_Py_atomic_exchange_uint16(uint16_t *obj, uint16_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint32_t
+_Py_atomic_exchange_uint32(uint32_t *obj, uint32_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint64_t
+_Py_atomic_exchange_uint64(uint64_t *obj, uint64_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uintptr_t
+_Py_atomic_exchange_uintptr(uintptr_t *obj, uintptr_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline Py_ssize_t
+_Py_atomic_exchange_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{ return __atomic_exchange_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void *
+_Py_atomic_exchange_ptr(void *obj, void *value)
+{ return __atomic_exchange_n((void **)obj, value, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_and --------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_and_uint8(uint8_t *obj, uint8_t value)
+{ return __atomic_fetch_and(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint16_t
+_Py_atomic_and_uint16(uint16_t *obj, uint16_t value)
+{ return __atomic_fetch_and(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint32_t
+_Py_atomic_and_uint32(uint32_t *obj, uint32_t value)
+{ return __atomic_fetch_and(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint64_t
+_Py_atomic_and_uint64(uint64_t *obj, uint64_t value)
+{ return __atomic_fetch_and(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uintptr_t
+_Py_atomic_and_uintptr(uintptr_t *obj, uintptr_t value)
+{ return __atomic_fetch_and(obj, value, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_or ---------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_or_uint8(uint8_t *obj, uint8_t value)
+{ return __atomic_fetch_or(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint16_t
+_Py_atomic_or_uint16(uint16_t *obj, uint16_t value)
+{ return __atomic_fetch_or(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint32_t
+_Py_atomic_or_uint32(uint32_t *obj, uint32_t value)
+{ return __atomic_fetch_or(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uint64_t
+_Py_atomic_or_uint64(uint64_t *obj, uint64_t value)
+{ return __atomic_fetch_or(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline uintptr_t
+_Py_atomic_or_uintptr(uintptr_t *obj, uintptr_t value)
+{ return __atomic_fetch_or(obj, value, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_load -------------------------------------------------------
+
+static inline int
+_Py_atomic_load_int(const int *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline int8_t
+_Py_atomic_load_int8(const int8_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline int16_t
+_Py_atomic_load_int16(const int16_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline int32_t
+_Py_atomic_load_int32(const int32_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline int64_t
+_Py_atomic_load_int64(const int64_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline intptr_t
+_Py_atomic_load_intptr(const intptr_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline uint8_t
+_Py_atomic_load_uint8(const uint8_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline uint16_t
+_Py_atomic_load_uint16(const uint16_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline uint32_t
+_Py_atomic_load_uint32(const uint32_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline uint64_t
+_Py_atomic_load_uint64(const uint64_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline uintptr_t
+_Py_atomic_load_uintptr(const uintptr_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline unsigned int
+_Py_atomic_load_uint(const unsigned int *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize(const Py_ssize_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_SEQ_CST); }
+
+static inline void *
+_Py_atomic_load_ptr(const void *obj)
+{ return (void *)__atomic_load_n((void **)obj, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_load_relaxed -----------------------------------------------
+
+static inline int
+_Py_atomic_load_int_relaxed(const int *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline int8_t
+_Py_atomic_load_int8_relaxed(const int8_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline int16_t
+_Py_atomic_load_int16_relaxed(const int16_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline int32_t
+_Py_atomic_load_int32_relaxed(const int32_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline int64_t
+_Py_atomic_load_int64_relaxed(const int64_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline intptr_t
+_Py_atomic_load_intptr_relaxed(const intptr_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline uint8_t
+_Py_atomic_load_uint8_relaxed(const uint8_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline uint16_t
+_Py_atomic_load_uint16_relaxed(const uint16_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline uint32_t
+_Py_atomic_load_uint32_relaxed(const uint32_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline uint64_t
+_Py_atomic_load_uint64_relaxed(const uint64_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline uintptr_t
+_Py_atomic_load_uintptr_relaxed(const uintptr_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline unsigned int
+_Py_atomic_load_uint_relaxed(const unsigned int *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize_relaxed(const Py_ssize_t *obj)
+{ return __atomic_load_n(obj, __ATOMIC_RELAXED); }
+
+static inline void *
+_Py_atomic_load_ptr_relaxed(const void *obj)
+{ return (void *)__atomic_load_n((const void **)obj, __ATOMIC_RELAXED); }
+
+
+// --- _Py_atomic_store ------------------------------------------------------
+
+static inline void
+_Py_atomic_store_int(int *obj, int value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_int8(int8_t *obj, int8_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_int16(int16_t *obj, int16_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_int32(int32_t *obj, int32_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_int64(int64_t *obj, int64_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_intptr(intptr_t *obj, intptr_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_uint8(uint8_t *obj, uint8_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_uint16(uint16_t *obj, uint16_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_uint32(uint32_t *obj, uint32_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_uint64(uint64_t *obj, uint64_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_uintptr(uintptr_t *obj, uintptr_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_uint(unsigned int *obj, unsigned int value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_ptr(void *obj, void *value)
+{ __atomic_store_n((void **)obj, value, __ATOMIC_SEQ_CST); }
+
+static inline void
+_Py_atomic_store_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_SEQ_CST); }
+
+
+// --- _Py_atomic_store_relaxed ----------------------------------------------
+
+static inline void
+_Py_atomic_store_int_relaxed(int *obj, int value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_int8_relaxed(int8_t *obj, int8_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_int16_relaxed(int16_t *obj, int16_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_int32_relaxed(int32_t *obj, int32_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_int64_relaxed(int64_t *obj, int64_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_intptr_relaxed(intptr_t *obj, intptr_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_uint8_relaxed(uint8_t *obj, uint8_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_uint16_relaxed(uint16_t *obj, uint16_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_uint32_relaxed(uint32_t *obj, uint32_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_uint64_relaxed(uint64_t *obj, uint64_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_uintptr_relaxed(uintptr_t *obj, uintptr_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_uint_relaxed(unsigned int *obj, unsigned int value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_ptr_relaxed(void *obj, void *value)
+{ __atomic_store_n((void **)obj, value, __ATOMIC_RELAXED); }
+
+static inline void
+_Py_atomic_store_ssize_relaxed(Py_ssize_t *obj, Py_ssize_t value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
+
+
+// --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
+
+static inline void *
+_Py_atomic_load_ptr_acquire(const void *obj)
+{ return (void *)__atomic_load_n((void **)obj, __ATOMIC_ACQUIRE); }
+
+static inline void
+_Py_atomic_store_ptr_release(void *obj, void *value)
+{ __atomic_store_n((void **)obj, value, __ATOMIC_RELEASE); }
+
+static inline void
+_Py_atomic_store_int_release(int *obj, int value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELEASE); }
+
+static inline int
+_Py_atomic_load_int_acquire(const int *obj)
+{ return __atomic_load_n(obj, __ATOMIC_ACQUIRE); }
+
+
+// --- _Py_atomic_fence ------------------------------------------------------
+
+static inline void
+_Py_atomic_fence_seq_cst(void)
+{ __atomic_thread_fence(__ATOMIC_SEQ_CST); }
+
+ static inline void
+_Py_atomic_fence_release(void)
+{ __atomic_thread_fence(__ATOMIC_RELEASE); }
diff --git a/Include/cpython/pyatomic_msc.h b/Include/cpython/pyatomic_msc.h
new file mode 100644
index 00000000000000..601a0cf65afc1c
--- /dev/null
+++ b/Include/cpython/pyatomic_msc.h
@@ -0,0 +1,970 @@
+// This is the implementation of Python atomic operations for MSVC if the
+// compiler does not support C11 or C++11 atomics.
+//
+// MSVC intrinsics are defined on char, short, long, __int64, and pointer
+// types. Note that long and int are both 32-bits even on 64-bit Windows,
+// so operations on int are cast to long.
+//
+// The volatile keyword has additional memory ordering semantics on MSVC. On
+// x86 and x86-64, volatile accesses have acquire-release semantics. On ARM64,
+// volatile accesses behave like C11's memory_order_relaxed.
+
+#ifndef Py_ATOMIC_MSC_H
+#  error "this header file must not be included directly"
+#endif
+
+#include <intrin.h>
+
+#define _Py_atomic_ASSERT_ARG_TYPE(TYPE) \
+    Py_BUILD_ASSERT(sizeof(*obj) == sizeof(TYPE))
+
+
+// --- _Py_atomic_add --------------------------------------------------------
+
+static inline int8_t
+_Py_atomic_add_int8(int8_t *obj, int8_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(char);
+    return (int8_t)_InterlockedExchangeAdd8((volatile char *)obj, (char)value);
+}
+
+static inline int16_t
+_Py_atomic_add_int16(int16_t *obj, int16_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(short);
+    return (int16_t)_InterlockedExchangeAdd16((volatile short *)obj, (short)value);
+}
+
+static inline int32_t
+_Py_atomic_add_int32(int32_t *obj, int32_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(long);
+    return (int32_t)_InterlockedExchangeAdd((volatile long *)obj, (long)value);
+}
+
+static inline int64_t
+_Py_atomic_add_int64(int64_t *obj, int64_t value)
+{
+#if defined(_M_X64) || defined(_M_ARM64)
+    _Py_atomic_ASSERT_ARG_TYPE(__int64);
+    return (int64_t)_InterlockedExchangeAdd64((volatile __int64 *)obj, (__int64)value);
+#else
+    int64_t old_value = _Py_atomic_load_int64_relaxed(obj);
+    for (;;) {
+        int64_t new_value = old_value + value;
+        if (_Py_atomic_compare_exchange_int64(obj, &old_value, new_value)) {
+            return old_value;
+        }
+    }
+#endif
+}
+
+
+static inline uint8_t
+_Py_atomic_add_uint8(uint8_t *obj, uint8_t value)
+{
+    return (uint8_t)_Py_atomic_add_int8((int8_t *)obj, (int8_t)value);
+}
+
+static inline uint16_t
+_Py_atomic_add_uint16(uint16_t *obj, uint16_t value)
+{
+    return (uint16_t)_Py_atomic_add_int16((int16_t *)obj, (int16_t)value);
+}
+
+static inline uint32_t
+_Py_atomic_add_uint32(uint32_t *obj, uint32_t value)
+{
+    return (uint32_t)_Py_atomic_add_int32((int32_t *)obj, (int32_t)value);
+}
+
+static inline int
+_Py_atomic_add_int(int *obj, int value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return (int)_Py_atomic_add_int32((int32_t *)obj, (int32_t)value);
+}
+
+static inline unsigned int
+_Py_atomic_add_uint(unsigned int *obj, unsigned int value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return (unsigned int)_Py_atomic_add_int32((int32_t *)obj, (int32_t)value);
+}
+
+static inline uint64_t
+_Py_atomic_add_uint64(uint64_t *obj, uint64_t value)
+{
+    return (uint64_t)_Py_atomic_add_int64((int64_t *)obj, (int64_t)value);
+}
+
+static inline intptr_t
+_Py_atomic_add_intptr(intptr_t *obj, intptr_t value)
+{
+#if SIZEOF_VOID_P == 8
+    _Py_atomic_ASSERT_ARG_TYPE(int64_t);
+    return (intptr_t)_Py_atomic_add_int64((int64_t *)obj, (int64_t)value);
+#else
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return (intptr_t)_Py_atomic_add_int32((int32_t *)obj, (int32_t)value);
+#endif
+}
+
+static inline uintptr_t
+_Py_atomic_add_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(intptr_t);
+    return (uintptr_t)_Py_atomic_add_intptr((intptr_t *)obj, (intptr_t)value);
+}
+
+static inline Py_ssize_t
+_Py_atomic_add_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(intptr_t);
+    return (Py_ssize_t)_Py_atomic_add_intptr((intptr_t *)obj, (intptr_t)value);
+}
+
+
+// --- _Py_atomic_compare_exchange -------------------------------------------
+
+static inline int
+_Py_atomic_compare_exchange_int8(int8_t *obj, int8_t *expected, int8_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(char);
+    int8_t initial = (int8_t)_InterlockedCompareExchange8(
+                                       (volatile char *)obj,
+                                       (char)value,
+                                       (char)*expected);
+    if (initial == *expected) {
+        return 1;
+    }
+    *expected = initial;
+    return 0;
+}
+
+static inline int
+_Py_atomic_compare_exchange_int16(int16_t *obj, int16_t *expected, int16_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(short);
+    int16_t initial = (int16_t)_InterlockedCompareExchange16(
+                                       (volatile short *)obj,
+                                       (short)value,
+                                       (short)*expected);
+    if (initial == *expected) {
+        return 1;
+    }
+    *expected = initial;
+    return 0;
+}
+
+static inline int
+_Py_atomic_compare_exchange_int32(int32_t *obj, int32_t *expected, int32_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(long);
+    int32_t initial = (int32_t)_InterlockedCompareExchange(
+                                       (volatile long *)obj,
+                                       (long)value,
+                                       (long)*expected);
+    if (initial == *expected) {
+        return 1;
+    }
+    *expected = initial;
+    return 0;
+}
+
+static inline int
+_Py_atomic_compare_exchange_int64(int64_t *obj, int64_t *expected, int64_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(__int64);
+    int64_t initial = (int64_t)_InterlockedCompareExchange64(
+                                       (volatile __int64 *)obj,
+                                       (__int64)value,
+                                       (__int64)*expected);
+    if (initial == *expected) {
+        return 1;
+    }
+    *expected = initial;
+    return 0;
+}
+
+static inline int
+_Py_atomic_compare_exchange_ptr(void *obj, void *expected, void *value)
+{
+    void *initial = _InterlockedCompareExchangePointer(
+                                       (void**)obj,
+                                       value,
+                                       *(void**)expected);
+    if (initial == *(void**)expected) {
+        return 1;
+    }
+    *(void**)expected = initial;
+    return 0;
+}
+
+
+static inline int
+_Py_atomic_compare_exchange_uint8(uint8_t *obj, uint8_t *expected, uint8_t value)
+{
+    return _Py_atomic_compare_exchange_int8((int8_t *)obj,
+                                            (int8_t *)expected,
+                                            (int8_t)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint16(uint16_t *obj, uint16_t *expected, uint16_t value)
+{
+    return _Py_atomic_compare_exchange_int16((int16_t *)obj,
+                                             (int16_t *)expected,
+                                             (int16_t)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint32(uint32_t *obj, uint32_t *expected, uint32_t value)
+{
+    return _Py_atomic_compare_exchange_int32((int32_t *)obj,
+                                             (int32_t *)expected,
+                                             (int32_t)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_int(int *obj, int *expected, int value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return _Py_atomic_compare_exchange_int32((int32_t *)obj,
+                                             (int32_t *)expected,
+                                             (int32_t)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint(unsigned int *obj, unsigned int *expected, unsigned int value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return _Py_atomic_compare_exchange_int32((int32_t *)obj,
+                                             (int32_t *)expected,
+                                             (int32_t)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint64(uint64_t *obj, uint64_t *expected, uint64_t value)
+{
+    return _Py_atomic_compare_exchange_int64((int64_t *)obj,
+                                             (int64_t *)expected,
+                                             (int64_t)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_intptr(intptr_t *obj, intptr_t *expected, intptr_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return _Py_atomic_compare_exchange_ptr((void**)obj,
+                                           (void**)expected,
+                                           (void*)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uintptr(uintptr_t *obj, uintptr_t *expected, uintptr_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return _Py_atomic_compare_exchange_ptr((void**)obj,
+                                           (void**)expected,
+                                           (void*)value);
+}
+
+static inline int
+_Py_atomic_compare_exchange_ssize(Py_ssize_t *obj, Py_ssize_t *expected, Py_ssize_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return _Py_atomic_compare_exchange_ptr((void**)obj,
+                                           (void**)expected,
+                                           (void*)value);
+}
+
+
+// --- _Py_atomic_exchange ---------------------------------------------------
+
+static inline int8_t
+_Py_atomic_exchange_int8(int8_t *obj, int8_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(char);
+    return (int8_t)_InterlockedExchange8((volatile char *)obj, (char)value);
+}
+
+static inline int16_t
+_Py_atomic_exchange_int16(int16_t *obj, int16_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(short);
+    return (int16_t)_InterlockedExchange16((volatile short *)obj, (short)value);
+}
+
+static inline int32_t
+_Py_atomic_exchange_int32(int32_t *obj, int32_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(long);
+    return (int32_t)_InterlockedExchange((volatile long *)obj, (long)value);
+}
+
+static inline int64_t
+_Py_atomic_exchange_int64(int64_t *obj, int64_t value)
+{
+#if defined(_M_X64) || defined(_M_ARM64)
+    _Py_atomic_ASSERT_ARG_TYPE(__int64);
+    return (int64_t)_InterlockedExchange64((volatile __int64 *)obj, (__int64)value);
+#else
+    int64_t old_value = _Py_atomic_load_int64_relaxed(obj);
+    for (;;) {
+        if (_Py_atomic_compare_exchange_int64(obj, &old_value, value)) {
+            return old_value;
+        }
+    }
+#endif
+}
+
+static inline void*
+_Py_atomic_exchange_ptr(void *obj, void *value)
+{
+    return (void*)_InterlockedExchangePointer((void * volatile *)obj, (void *)value);
+}
+
+
+static inline uint8_t
+_Py_atomic_exchange_uint8(uint8_t *obj, uint8_t value)
+{
+    return (uint8_t)_Py_atomic_exchange_int8((int8_t *)obj,
+                                             (int8_t)value);
+}
+
+static inline uint16_t
+_Py_atomic_exchange_uint16(uint16_t *obj, uint16_t value)
+{
+    return (uint16_t)_Py_atomic_exchange_int16((int16_t *)obj,
+                                               (int16_t)value);
+}
+
+static inline uint32_t
+_Py_atomic_exchange_uint32(uint32_t *obj, uint32_t value)
+{
+    return (uint32_t)_Py_atomic_exchange_int32((int32_t *)obj,
+                                               (int32_t)value);
+}
+
+static inline int
+_Py_atomic_exchange_int(int *obj, int value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return (int)_Py_atomic_exchange_int32((int32_t *)obj,
+                                           (int32_t)value);
+}
+
+static inline unsigned int
+_Py_atomic_exchange_uint(unsigned int *obj, unsigned int value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(int32_t);
+    return (unsigned int)_Py_atomic_exchange_int32((int32_t *)obj,
+                                                   (int32_t)value);
+}
+
+static inline uint64_t
+_Py_atomic_exchange_uint64(uint64_t *obj, uint64_t value)
+{
+    return (uint64_t)_Py_atomic_exchange_int64((int64_t *)obj,
+                                               (int64_t)value);
+}
+
+static inline intptr_t
+_Py_atomic_exchange_intptr(intptr_t *obj, intptr_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return (intptr_t)_Py_atomic_exchange_ptr((void**)obj,
+                                             (void*)value);
+}
+
+static inline uintptr_t
+_Py_atomic_exchange_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return (uintptr_t)_Py_atomic_exchange_ptr((void**)obj,
+                                              (void*)value);
+}
+
+static inline Py_ssize_t
+_Py_atomic_exchange_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return (Py_ssize_t)_Py_atomic_exchange_ptr((void**)obj,
+                                               (void*)value);
+}
+
+
+// --- _Py_atomic_and --------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_and_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(char);
+    return (uint8_t)_InterlockedAnd8((volatile char *)obj, (char)value);
+}
+
+static inline uint16_t
+_Py_atomic_and_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(short);
+    return (uint16_t)_InterlockedAnd16((volatile short *)obj, (short)value);
+}
+
+static inline uint32_t
+_Py_atomic_and_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(long);
+    return (uint32_t)_InterlockedAnd((volatile long *)obj, (long)value);
+}
+
+static inline uint64_t
+_Py_atomic_and_uint64(uint64_t *obj, uint64_t value)
+{
+#if defined(_M_X64) || defined(_M_ARM64)
+    _Py_atomic_ASSERT_ARG_TYPE(__int64);
+    return (uint64_t)_InterlockedAnd64((volatile __int64 *)obj, (__int64)value);
+#else
+    uint64_t old_value = _Py_atomic_load_uint64_relaxed(obj);
+    for (;;) {
+        uint64_t new_value = old_value & value;
+        if (_Py_atomic_compare_exchange_uint64(obj, &old_value, new_value)) {
+            return old_value;
+        }
+    }
+#endif
+}
+
+static inline uintptr_t
+_Py_atomic_and_uintptr(uintptr_t *obj, uintptr_t value)
+{
+#if SIZEOF_VOID_P == 8
+    _Py_atomic_ASSERT_ARG_TYPE(uint64_t);
+    return (uintptr_t)_Py_atomic_and_uint64((uint64_t *)obj,
+                                            (uint64_t)value);
+#else
+    _Py_atomic_ASSERT_ARG_TYPE(uint32_t);
+    return (uintptr_t)_Py_atomic_and_uint32((uint32_t *)obj,
+                                            (uint32_t)value);
+#endif
+}
+
+
+// --- _Py_atomic_or ---------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_or_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(char);
+    return (uint8_t)_InterlockedOr8((volatile char *)obj, (char)value);
+}
+
+static inline uint16_t
+_Py_atomic_or_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(short);
+    return (uint16_t)_InterlockedOr16((volatile short *)obj, (short)value);
+}
+
+static inline uint32_t
+_Py_atomic_or_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(long);
+    return (uint32_t)_InterlockedOr((volatile long *)obj, (long)value);
+}
+
+static inline uint64_t
+_Py_atomic_or_uint64(uint64_t *obj, uint64_t value)
+{
+#if defined(_M_X64) || defined(_M_ARM64)
+    _Py_atomic_ASSERT_ARG_TYPE(__int64);
+    return (uint64_t)_InterlockedOr64((volatile __int64 *)obj, (__int64)value);
+#else
+    uint64_t old_value = _Py_atomic_load_uint64_relaxed(obj);
+    for (;;) {
+        uint64_t new_value = old_value | value;
+        if (_Py_atomic_compare_exchange_uint64(obj, &old_value, new_value)) {
+            return old_value;
+        }
+    }
+#endif
+}
+
+
+static inline uintptr_t
+_Py_atomic_or_uintptr(uintptr_t *obj, uintptr_t value)
+{
+#if SIZEOF_VOID_P == 8
+    _Py_atomic_ASSERT_ARG_TYPE(uint64_t);
+    return (uintptr_t)_Py_atomic_or_uint64((uint64_t *)obj,
+                                           (uint64_t)value);
+#else
+    _Py_atomic_ASSERT_ARG_TYPE(uint32_t);
+    return (uintptr_t)_Py_atomic_or_uint32((uint32_t *)obj,
+                                           (uint32_t)value);
+#endif
+}
+
+
+// --- _Py_atomic_load -------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_load_uint8(const uint8_t *obj)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    return *(volatile uint8_t *)obj;
+#elif defined(_M_ARM64)
+    return (uint8_t)__ldar8((unsigned __int8 volatile *)obj);
+#else
+#  error "no implementation of _Py_atomic_load_uint8"
+#endif
+}
+
+static inline uint16_t
+_Py_atomic_load_uint16(const uint16_t *obj)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    return *(volatile uint16_t *)obj;
+#elif defined(_M_ARM64)
+    return (uint16_t)__ldar16((unsigned __int16 volatile *)obj);
+#else
+#  error "no implementation of _Py_atomic_load_uint16"
+#endif
+}
+
+static inline uint32_t
+_Py_atomic_load_uint32(const uint32_t *obj)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    return *(volatile uint32_t *)obj;
+#elif defined(_M_ARM64)
+    return (uint32_t)__ldar32((unsigned __int32 volatile *)obj);
+#else
+#  error "no implementation of _Py_atomic_load_uint32"
+#endif
+}
+
+static inline uint64_t
+_Py_atomic_load_uint64(const uint64_t *obj)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    return *(volatile uint64_t *)obj;
+#elif defined(_M_ARM64)
+    return (uint64_t)__ldar64((unsigned __int64 volatile *)obj);
+#else
+#  error "no implementation of _Py_atomic_load_uint64"
+#endif
+}
+
+static inline int8_t
+_Py_atomic_load_int8(const int8_t *obj)
+{
+    return (int8_t)_Py_atomic_load_uint8((const uint8_t *)obj);
+}
+
+static inline int16_t
+_Py_atomic_load_int16(const int16_t *obj)
+{
+    return (int16_t)_Py_atomic_load_uint16((const uint16_t *)obj);
+}
+
+static inline int32_t
+_Py_atomic_load_int32(const int32_t *obj)
+{
+    return (int32_t)_Py_atomic_load_uint32((const uint32_t *)obj);
+}
+
+static inline int
+_Py_atomic_load_int(const int *obj)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(uint32_t);
+    return (int)_Py_atomic_load_uint32((uint32_t *)obj);
+}
+
+static inline unsigned int
+_Py_atomic_load_uint(const unsigned int *obj)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(uint32_t);
+    return (unsigned int)_Py_atomic_load_uint32((uint32_t *)obj);
+}
+
+static inline int64_t
+_Py_atomic_load_int64(const int64_t *obj)
+{
+    return (int64_t)_Py_atomic_load_uint64((const uint64_t *)obj);
+}
+
+static inline void*
+_Py_atomic_load_ptr(const void *obj)
+{
+#if SIZEOF_VOID_P == 8
+    return (void*)_Py_atomic_load_uint64((const uint64_t *)obj);
+#else
+    return (void*)_Py_atomic_load_uint32((const uint32_t *)obj);
+#endif
+}
+
+static inline intptr_t
+_Py_atomic_load_intptr(const intptr_t *obj)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return (intptr_t)_Py_atomic_load_ptr((void*)obj);
+}
+
+static inline uintptr_t
+_Py_atomic_load_uintptr(const uintptr_t *obj)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return (uintptr_t)_Py_atomic_load_ptr((void*)obj);
+}
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize(const Py_ssize_t *obj)
+{
+    _Py_atomic_ASSERT_ARG_TYPE(void*);
+    return (Py_ssize_t)_Py_atomic_load_ptr((void*)obj);
+}
+
+
+// --- _Py_atomic_load_relaxed -----------------------------------------------
+
+static inline int
+_Py_atomic_load_int_relaxed(const int *obj)
+{
+    return *(volatile int *)obj;
+}
+
+static inline int8_t
+_Py_atomic_load_int8_relaxed(const int8_t *obj)
+{
+    return *(volatile int8_t *)obj;
+}
+
+static inline int16_t
+_Py_atomic_load_int16_relaxed(const int16_t *obj)
+{
+    return *(volatile int16_t *)obj;
+}
+
+static inline int32_t
+_Py_atomic_load_int32_relaxed(const int32_t *obj)
+{
+    return *(volatile int32_t *)obj;
+}
+
+static inline int64_t
+_Py_atomic_load_int64_relaxed(const int64_t *obj)
+{
+    return *(volatile int64_t *)obj;
+}
+
+static inline intptr_t
+_Py_atomic_load_intptr_relaxed(const intptr_t *obj)
+{
+    return *(volatile intptr_t *)obj;
+}
+
+static inline uint8_t
+_Py_atomic_load_uint8_relaxed(const uint8_t *obj)
+{
+    return *(volatile uint8_t *)obj;
+}
+
+static inline uint16_t
+_Py_atomic_load_uint16_relaxed(const uint16_t *obj)
+{
+    return *(volatile uint16_t *)obj;
+}
+
+static inline uint32_t
+_Py_atomic_load_uint32_relaxed(const uint32_t *obj)
+{
+    return *(volatile uint32_t *)obj;
+}
+
+static inline uint64_t
+_Py_atomic_load_uint64_relaxed(const uint64_t *obj)
+{
+    return *(volatile uint64_t *)obj;
+}
+
+static inline uintptr_t
+_Py_atomic_load_uintptr_relaxed(const uintptr_t *obj)
+{
+    return *(volatile uintptr_t *)obj;
+}
+
+static inline unsigned int
+_Py_atomic_load_uint_relaxed(const unsigned int *obj)
+{
+    return *(volatile unsigned int *)obj;
+}
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize_relaxed(const Py_ssize_t *obj)
+{
+    return *(volatile Py_ssize_t *)obj;
+}
+
+static inline void*
+_Py_atomic_load_ptr_relaxed(const void *obj)
+{
+    return *(void * volatile *)obj;
+}
+
+
+// --- _Py_atomic_store ------------------------------------------------------
+
+static inline void
+_Py_atomic_store_int(int *obj, int value)
+{
+    (void)_Py_atomic_exchange_int(obj, value);
+}
+
+static inline void
+_Py_atomic_store_int8(int8_t *obj, int8_t value)
+{
+    (void)_Py_atomic_exchange_int8(obj, value);
+}
+
+static inline void
+_Py_atomic_store_int16(int16_t *obj, int16_t value)
+{
+    (void)_Py_atomic_exchange_int16(obj, value);
+}
+
+static inline void
+_Py_atomic_store_int32(int32_t *obj, int32_t value)
+{
+    (void)_Py_atomic_exchange_int32(obj, value);
+}
+
+static inline void
+_Py_atomic_store_int64(int64_t *obj, int64_t value)
+{
+    (void)_Py_atomic_exchange_int64(obj, value);
+}
+
+static inline void
+_Py_atomic_store_intptr(intptr_t *obj, intptr_t value)
+{
+    (void)_Py_atomic_exchange_intptr(obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint8(uint8_t *obj, uint8_t value)
+{
+    (void)_Py_atomic_exchange_uint8(obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint16(uint16_t *obj, uint16_t value)
+{
+    (void)_Py_atomic_exchange_uint16(obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint32(uint32_t *obj, uint32_t value)
+{
+    (void)_Py_atomic_exchange_uint32(obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint64(uint64_t *obj, uint64_t value)
+{
+    (void)_Py_atomic_exchange_uint64(obj, value);
+}
+
+static inline void
+_Py_atomic_store_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    (void)_Py_atomic_exchange_uintptr(obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint(unsigned int *obj, unsigned int value)
+{
+    (void)_Py_atomic_exchange_uint(obj, value);
+}
+
+static inline void
+_Py_atomic_store_ptr(void *obj, void *value)
+{
+    (void)_Py_atomic_exchange_ptr(obj, value);
+}
+
+static inline void
+_Py_atomic_store_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{
+    (void)_Py_atomic_exchange_ssize(obj, value);
+}
+
+
+// --- _Py_atomic_store_relaxed ----------------------------------------------
+
+static inline void
+_Py_atomic_store_int_relaxed(int *obj, int value)
+{
+    *(volatile int *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_int8_relaxed(int8_t *obj, int8_t value)
+{
+    *(volatile int8_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_int16_relaxed(int16_t *obj, int16_t value)
+{
+    *(volatile int16_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_int32_relaxed(int32_t *obj, int32_t value)
+{
+    *(volatile int32_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_int64_relaxed(int64_t *obj, int64_t value)
+{
+    *(volatile int64_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_intptr_relaxed(intptr_t *obj, intptr_t value)
+{
+    *(volatile intptr_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_uint8_relaxed(uint8_t *obj, uint8_t value)
+{
+    *(volatile uint8_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_uint16_relaxed(uint16_t *obj, uint16_t value)
+{
+    *(volatile uint16_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_uint32_relaxed(uint32_t *obj, uint32_t value)
+{
+    *(volatile uint32_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_uint64_relaxed(uint64_t *obj, uint64_t value)
+{
+    *(volatile uint64_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_uintptr_relaxed(uintptr_t *obj, uintptr_t value)
+{
+    *(volatile uintptr_t *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_uint_relaxed(unsigned int *obj, unsigned int value)
+{
+    *(volatile unsigned int *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_ptr_relaxed(void *obj, void* value)
+{
+    *(void * volatile *)obj = value;
+}
+
+static inline void
+_Py_atomic_store_ssize_relaxed(Py_ssize_t *obj, Py_ssize_t value)
+{
+    *(volatile Py_ssize_t *)obj = value;
+}
+
+// --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
+
+static inline void *
+_Py_atomic_load_ptr_acquire(const void *obj)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    return *(void * volatile *)obj;
+#elif defined(_M_ARM64)
+    return (void *)__ldar64((unsigned __int64 volatile *)obj);
+#else
+#  error "no implementation of _Py_atomic_load_ptr_acquire"
+#endif
+}
+
+static inline void
+_Py_atomic_store_ptr_release(void *obj, void *value)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    *(void * volatile *)obj = value;
+#elif defined(_M_ARM64)
+    __stlr64((unsigned __int64 volatile *)obj, (uintptr_t)value);
+#else
+#  error "no implementation of _Py_atomic_store_ptr_release"
+#endif
+}
+
+static inline void
+_Py_atomic_store_int_release(int *obj, int value)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    *(int volatile *)obj = value;
+#elif defined(_M_ARM64)
+    _Py_atomic_ASSERT_ARG_TYPE(unsigned __int32);
+    __stlr32((unsigned __int32 volatile *)obj, (unsigned __int32)value);
+#else
+#  error "no implementation of _Py_atomic_store_int_release"
+#endif
+}
+
+static inline int
+_Py_atomic_load_int_acquire(const int *obj)
+{
+#if defined(_M_X64) || defined(_M_IX86)
+    return *(int volatile *)obj;
+#elif defined(_M_ARM64)
+    _Py_atomic_ASSERT_ARG_TYPE(unsigned __int32);
+    return (int)__ldar32((unsigned __int32 volatile *)obj);
+#else
+#  error "no implementation of _Py_atomic_load_int_acquire"
+#endif
+}
+
+
+// --- _Py_atomic_fence ------------------------------------------------------
+
+ static inline void
+_Py_atomic_fence_seq_cst(void)
+{
+#if defined(_M_ARM64)
+    __dmb(_ARM64_BARRIER_ISH);
+#elif defined(_M_X64)
+    __faststorefence();
+#elif defined(_M_IX86)
+    _mm_mfence();
+#else
+#  error "no implementation of _Py_atomic_fence_seq_cst"
+#endif
+}
+
+ static inline void
+_Py_atomic_fence_release(void)
+{
+#if defined(_M_ARM64)
+    __dmb(_ARM64_BARRIER_ISH);
+#elif defined(_M_X64) || defined(_M_IX86)
+    _ReadWriteBarrier();
+#else
+#  error "no implementation of _Py_atomic_fence_release"
+#endif
+}
+
+#undef _Py_atomic_ASSERT_ARG_TYPE
diff --git a/Include/cpython/pyatomic_std.h b/Include/cpython/pyatomic_std.h
new file mode 100644
index 00000000000000..a05bfaec47e89d
--- /dev/null
+++ b/Include/cpython/pyatomic_std.h
@@ -0,0 +1,889 @@
+// This is the implementation of Python atomic operations using C++11 or C11
+// atomics. Note that the pyatomic_gcc.h implementation is preferred for GCC
+// compatible compilers, even if they support C++11 atomics.
+
+#ifndef Py_ATOMIC_STD_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C++" {
+#  include <atomic>
+}
+#  define _Py_USING_STD using namespace std
+#  define _Atomic(tp) atomic<tp>
+#else
+#  define  _Py_USING_STD
+#  include <stdatomic.h>
+#endif
+
+
+// --- _Py_atomic_add --------------------------------------------------------
+
+static inline int
+_Py_atomic_add_int(int *obj, int value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(int)*)obj, value);
+}
+
+static inline int8_t
+_Py_atomic_add_int8(int8_t *obj, int8_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(int8_t)*)obj, value);
+}
+
+static inline int16_t
+_Py_atomic_add_int16(int16_t *obj, int16_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(int16_t)*)obj, value);
+}
+
+static inline int32_t
+_Py_atomic_add_int32(int32_t *obj, int32_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(int32_t)*)obj, value);
+}
+
+static inline int64_t
+_Py_atomic_add_int64(int64_t *obj, int64_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(int64_t)*)obj, value);
+}
+
+static inline intptr_t
+_Py_atomic_add_intptr(intptr_t *obj, intptr_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(intptr_t)*)obj, value);
+}
+
+static inline unsigned int
+_Py_atomic_add_uint(unsigned int *obj, unsigned int value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(unsigned int)*)obj, value);
+}
+
+static inline uint8_t
+_Py_atomic_add_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(uint8_t)*)obj, value);
+}
+
+static inline uint16_t
+_Py_atomic_add_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(uint16_t)*)obj, value);
+}
+
+static inline uint32_t
+_Py_atomic_add_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(uint32_t)*)obj, value);
+}
+
+static inline uint64_t
+_Py_atomic_add_uint64(uint64_t *obj, uint64_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(uint64_t)*)obj, value);
+}
+
+static inline uintptr_t
+_Py_atomic_add_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(uintptr_t)*)obj, value);
+}
+
+static inline Py_ssize_t
+_Py_atomic_add_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_add((_Atomic(Py_ssize_t)*)obj, value);
+}
+
+
+// --- _Py_atomic_compare_exchange -------------------------------------------
+
+static inline int
+_Py_atomic_compare_exchange_int(int *obj, int *expected, int desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(int)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_int8(int8_t *obj, int8_t *expected, int8_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(int8_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_int16(int16_t *obj, int16_t *expected, int16_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(int16_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_int32(int32_t *obj, int32_t *expected, int32_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(int32_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_int64(int64_t *obj, int64_t *expected, int64_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(int64_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_intptr(intptr_t *obj, intptr_t *expected, intptr_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(intptr_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint(unsigned int *obj, unsigned int *expected, unsigned int desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(unsigned int)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint8(uint8_t *obj, uint8_t *expected, uint8_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(uint8_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint16(uint16_t *obj, uint16_t *expected, uint16_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(uint16_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint32(uint32_t *obj, uint32_t *expected, uint32_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(uint32_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uint64(uint64_t *obj, uint64_t *expected, uint64_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(uint64_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_uintptr(uintptr_t *obj, uintptr_t *expected, uintptr_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(uintptr_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_ssize(Py_ssize_t *obj, Py_ssize_t *expected, Py_ssize_t desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(Py_ssize_t)*)obj,
+                                          expected, desired);
+}
+
+static inline int
+_Py_atomic_compare_exchange_ptr(void *obj, void *expected, void *desired)
+{
+    _Py_USING_STD;
+    return atomic_compare_exchange_strong((_Atomic(void *)*)obj,
+                                          (void **)expected, desired);
+}
+
+
+// --- _Py_atomic_exchange ---------------------------------------------------
+
+static inline int
+_Py_atomic_exchange_int(int *obj, int value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(int)*)obj, value);
+}
+
+static inline int8_t
+_Py_atomic_exchange_int8(int8_t *obj, int8_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(int8_t)*)obj, value);
+}
+
+static inline int16_t
+_Py_atomic_exchange_int16(int16_t *obj, int16_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(int16_t)*)obj, value);
+}
+
+static inline int32_t
+_Py_atomic_exchange_int32(int32_t *obj, int32_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(int32_t)*)obj, value);
+}
+
+static inline int64_t
+_Py_atomic_exchange_int64(int64_t *obj, int64_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(int64_t)*)obj, value);
+}
+
+static inline intptr_t
+_Py_atomic_exchange_intptr(intptr_t *obj, intptr_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(intptr_t)*)obj, value);
+}
+
+static inline unsigned int
+_Py_atomic_exchange_uint(unsigned int *obj, unsigned int value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(unsigned int)*)obj, value);
+}
+
+static inline uint8_t
+_Py_atomic_exchange_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(uint8_t)*)obj, value);
+}
+
+static inline uint16_t
+_Py_atomic_exchange_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(uint16_t)*)obj, value);
+}
+
+static inline uint32_t
+_Py_atomic_exchange_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(uint32_t)*)obj, value);
+}
+
+static inline uint64_t
+_Py_atomic_exchange_uint64(uint64_t *obj, uint64_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(uint64_t)*)obj, value);
+}
+
+static inline uintptr_t
+_Py_atomic_exchange_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(uintptr_t)*)obj, value);
+}
+
+static inline Py_ssize_t
+_Py_atomic_exchange_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(Py_ssize_t)*)obj, value);
+}
+
+static inline void*
+_Py_atomic_exchange_ptr(void *obj, void *value)
+{
+    _Py_USING_STD;
+    return atomic_exchange((_Atomic(void *)*)obj, value);
+}
+
+
+// --- _Py_atomic_and --------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_and_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_and((_Atomic(uint8_t)*)obj, value);
+}
+
+static inline uint16_t
+_Py_atomic_and_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_and((_Atomic(uint16_t)*)obj, value);
+}
+
+static inline uint32_t
+_Py_atomic_and_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_and((_Atomic(uint32_t)*)obj, value);
+}
+
+static inline uint64_t
+_Py_atomic_and_uint64(uint64_t *obj, uint64_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_and((_Atomic(uint64_t)*)obj, value);
+}
+
+static inline uintptr_t
+_Py_atomic_and_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_and((_Atomic(uintptr_t)*)obj, value);
+}
+
+
+// --- _Py_atomic_or ---------------------------------------------------------
+
+static inline uint8_t
+_Py_atomic_or_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_or((_Atomic(uint8_t)*)obj, value);
+}
+
+static inline uint16_t
+_Py_atomic_or_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_or((_Atomic(uint16_t)*)obj, value);
+}
+
+static inline uint32_t
+_Py_atomic_or_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_or((_Atomic(uint32_t)*)obj, value);
+}
+
+static inline uint64_t
+_Py_atomic_or_uint64(uint64_t *obj, uint64_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_or((_Atomic(uint64_t)*)obj, value);
+}
+
+static inline uintptr_t
+_Py_atomic_or_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_USING_STD;
+    return atomic_fetch_or((_Atomic(uintptr_t)*)obj, value);
+}
+
+
+// --- _Py_atomic_load -------------------------------------------------------
+
+static inline int
+_Py_atomic_load_int(const int *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(int)*)obj);
+}
+
+static inline int8_t
+_Py_atomic_load_int8(const int8_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(int8_t)*)obj);
+}
+
+static inline int16_t
+_Py_atomic_load_int16(const int16_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(int16_t)*)obj);
+}
+
+static inline int32_t
+_Py_atomic_load_int32(const int32_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(int32_t)*)obj);
+}
+
+static inline int64_t
+_Py_atomic_load_int64(const int64_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(int64_t)*)obj);
+}
+
+static inline intptr_t
+_Py_atomic_load_intptr(const intptr_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(intptr_t)*)obj);
+}
+
+static inline uint8_t
+_Py_atomic_load_uint8(const uint8_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(uint8_t)*)obj);
+}
+
+static inline uint16_t
+_Py_atomic_load_uint16(const uint16_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(uint32_t)*)obj);
+}
+
+static inline uint32_t
+_Py_atomic_load_uint32(const uint32_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(uint32_t)*)obj);
+}
+
+static inline uint64_t
+_Py_atomic_load_uint64(const uint64_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(uint64_t)*)obj);
+}
+
+static inline uintptr_t
+_Py_atomic_load_uintptr(const uintptr_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(uintptr_t)*)obj);
+}
+
+static inline unsigned int
+_Py_atomic_load_uint(const unsigned int *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(unsigned int)*)obj);
+}
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize(const Py_ssize_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(Py_ssize_t)*)obj);
+}
+
+static inline void*
+_Py_atomic_load_ptr(const void *obj)
+{
+    _Py_USING_STD;
+    return atomic_load((const _Atomic(void*)*)obj);
+}
+
+
+// --- _Py_atomic_load_relaxed -----------------------------------------------
+
+static inline int
+_Py_atomic_load_int_relaxed(const int *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(int)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline int8_t
+_Py_atomic_load_int8_relaxed(const int8_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(int8_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline int16_t
+_Py_atomic_load_int16_relaxed(const int16_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(int16_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline int32_t
+_Py_atomic_load_int32_relaxed(const int32_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(int32_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline int64_t
+_Py_atomic_load_int64_relaxed(const int64_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(int64_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline intptr_t
+_Py_atomic_load_intptr_relaxed(const intptr_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(intptr_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline uint8_t
+_Py_atomic_load_uint8_relaxed(const uint8_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(uint8_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline uint16_t
+_Py_atomic_load_uint16_relaxed(const uint16_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(uint16_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline uint32_t
+_Py_atomic_load_uint32_relaxed(const uint32_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(uint32_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline uint64_t
+_Py_atomic_load_uint64_relaxed(const uint64_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(uint64_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline uintptr_t
+_Py_atomic_load_uintptr_relaxed(const uintptr_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(uintptr_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline unsigned int
+_Py_atomic_load_uint_relaxed(const unsigned int *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(unsigned int)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline Py_ssize_t
+_Py_atomic_load_ssize_relaxed(const Py_ssize_t *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(Py_ssize_t)*)obj,
+                                memory_order_relaxed);
+}
+
+static inline void*
+_Py_atomic_load_ptr_relaxed(const void *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(void*)*)obj,
+                                memory_order_relaxed);
+}
+
+
+// --- _Py_atomic_store ------------------------------------------------------
+
+static inline void
+_Py_atomic_store_int(int *obj, int value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(int)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_int8(int8_t *obj, int8_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(int8_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_int16(int16_t *obj, int16_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(int16_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_int32(int32_t *obj, int32_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(int32_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_int64(int64_t *obj, int64_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(int64_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_intptr(intptr_t *obj, intptr_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(intptr_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint8(uint8_t *obj, uint8_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(uint8_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint16(uint16_t *obj, uint16_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(uint16_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint32(uint32_t *obj, uint32_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(uint32_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint64(uint64_t *obj, uint64_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(uint64_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_uintptr(uintptr_t *obj, uintptr_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(uintptr_t)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_uint(unsigned int *obj, unsigned int value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(unsigned int)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_ptr(void *obj, void *value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(void*)*)obj, value);
+}
+
+static inline void
+_Py_atomic_store_ssize(Py_ssize_t *obj, Py_ssize_t value)
+{
+    _Py_USING_STD;
+    atomic_store((_Atomic(Py_ssize_t)*)obj, value);
+}
+
+
+// --- _Py_atomic_store_relaxed ----------------------------------------------
+
+static inline void
+_Py_atomic_store_int_relaxed(int *obj, int value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(int)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_int8_relaxed(int8_t *obj, int8_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(int8_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_int16_relaxed(int16_t *obj, int16_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(int16_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_int32_relaxed(int32_t *obj, int32_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(int32_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_int64_relaxed(int64_t *obj, int64_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(int64_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_intptr_relaxed(intptr_t *obj, intptr_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(intptr_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_uint8_relaxed(uint8_t *obj, uint8_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(uint8_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_uint16_relaxed(uint16_t *obj, uint16_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(uint16_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_uint32_relaxed(uint32_t *obj, uint32_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(uint32_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_uint64_relaxed(uint64_t *obj, uint64_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(uint64_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_uintptr_relaxed(uintptr_t *obj, uintptr_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(uintptr_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_uint_relaxed(unsigned int *obj, unsigned int value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(unsigned int)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_ptr_relaxed(void *obj, void *value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(void*)*)obj, value,
+                          memory_order_relaxed);
+}
+
+static inline void
+_Py_atomic_store_ssize_relaxed(Py_ssize_t *obj, Py_ssize_t value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(Py_ssize_t)*)obj, value,
+                          memory_order_relaxed);
+}
+
+
+// --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
+
+static inline void *
+_Py_atomic_load_ptr_acquire(const void *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(void*)*)obj,
+                                memory_order_acquire);
+}
+
+static inline void
+_Py_atomic_store_ptr_release(void *obj, void *value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(void*)*)obj, value,
+                          memory_order_release);
+}
+
+static inline void
+_Py_atomic_store_int_release(int *obj, int value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(int)*)obj, value,
+                          memory_order_release);
+}
+
+static inline int
+_Py_atomic_load_int_acquire(const int *obj)
+{
+    _Py_USING_STD;
+    return atomic_load_explicit((const _Atomic(int)*)obj,
+                                memory_order_acquire);
+}
+
+
+
+// --- _Py_atomic_fence ------------------------------------------------------
+
+ static inline void
+_Py_atomic_fence_seq_cst(void)
+{
+    _Py_USING_STD;
+    atomic_thread_fence(memory_order_seq_cst);
+}
+
+ static inline void
+_Py_atomic_fence_release(void)
+{
+    _Py_USING_STD;
+    atomic_thread_fence(memory_order_release);
+}
diff --git a/Include/cpython/pyerrors.h b/Include/cpython/pyerrors.h
index 758804ade2baa7..479b908fb7058a 100644
--- a/Include/cpython/pyerrors.h
+++ b/Include/cpython/pyerrors.h
@@ -88,38 +88,15 @@ typedef PyOSErrorObject PyEnvironmentErrorObject;
 typedef PyOSErrorObject PyWindowsErrorObject;
 #endif
 
-/* Error handling definitions */
-
-PyAPI_FUNC(void) _PyErr_SetKeyError(PyObject *);
-PyAPI_FUNC(_PyErr_StackItem*) _PyErr_GetTopmostException(PyThreadState *tstate);
-PyAPI_FUNC(PyObject*) _PyErr_GetHandledException(PyThreadState *);
-PyAPI_FUNC(void) _PyErr_SetHandledException(PyThreadState *, PyObject *);
-PyAPI_FUNC(void) _PyErr_GetExcInfo(PyThreadState *, PyObject **, PyObject **, PyObject **);
-
-/* Context manipulation (PEP 3134) */
-
-Py_DEPRECATED(3.12) PyAPI_FUNC(void) _PyErr_ChainExceptions(PyObject *, PyObject *, PyObject *);
-PyAPI_FUNC(void) _PyErr_ChainExceptions1(PyObject *);
-
-/* Like PyErr_Format(), but saves current exception as __context__ and
-   __cause__.
- */
-PyAPI_FUNC(PyObject *) _PyErr_FormatFromCause(
-    PyObject *exception,
-    const char *format,   /* ASCII-encoded string  */
-    ...
-    );
-
 /* In exceptions.c */
 
-PyAPI_FUNC(int) _PyException_AddNote(
-     PyObject *exc,
-     PyObject *note);
+PyAPI_FUNC(PyObject*) PyUnstable_Exc_PrepReraiseStar(
+     PyObject *orig,
+     PyObject *excs);
 
 /* In signalmodule.c */
 
 int PySignal_SetWakeupFd(int fd);
-PyAPI_FUNC(int) _PyErr_CheckSignals(void);
 
 /* Support for adding program text to SyntaxErrors */
 
@@ -139,36 +116,10 @@ PyAPI_FUNC(PyObject *) PyErr_ProgramTextObject(
     PyObject *filename,
     int lineno);
 
-PyAPI_FUNC(PyObject *) _PyErr_ProgramDecodedTextObject(
-    PyObject *filename,
-    int lineno,
-    const char* encoding);
-
-PyAPI_FUNC(PyObject *) _PyUnicodeTranslateError_Create(
-    PyObject *object,
-    Py_ssize_t start,
-    Py_ssize_t end,
-    const char *reason          /* UTF-8 encoded string */
-    );
-
-PyAPI_FUNC(void) _PyErr_WriteUnraisableMsg(
-    const char *err_msg,
-    PyObject *obj);
-
 PyAPI_FUNC(void) _Py_NO_RETURN _Py_FatalErrorFunc(
     const char *func,
     const char *message);
 
-PyAPI_FUNC(void) _Py_NO_RETURN _Py_FatalErrorFormat(
-    const char *func,
-    const char *format,
-    ...);
-
-extern PyObject *_PyErr_SetImportErrorWithNameFrom(
-        PyObject *,
-        PyObject *,
-        PyObject *,
-        PyObject *);
-
+PyAPI_FUNC(void) PyErr_FormatUnraisable(const char *, ...);
 
 #define Py_FatalError(message) _Py_FatalErrorFunc(__func__, (message))
diff --git a/Include/cpython/pyframe.h b/Include/cpython/pyframe.h
index 6ec292718aff1a..c5adbbe4868f69 100644
--- a/Include/cpython/pyframe.h
+++ b/Include/cpython/pyframe.h
@@ -16,3 +16,28 @@ PyAPI_FUNC(PyObject *) PyFrame_GetGenerator(PyFrameObject *frame);
 PyAPI_FUNC(int) PyFrame_GetLasti(PyFrameObject *frame);
 PyAPI_FUNC(PyObject*) PyFrame_GetVar(PyFrameObject *frame, PyObject *name);
 PyAPI_FUNC(PyObject*) PyFrame_GetVarString(PyFrameObject *frame, const char *name);
+
+/* The following functions are for use by debuggers and other tools
+ * implementing custom frame evaluators with PEP 523. */
+
+struct _PyInterpreterFrame;
+
+/* Returns the code object of the frame (strong reference).
+ * Does not raise an exception. */
+PyAPI_FUNC(PyObject *) PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame);
+
+/* Returns a byte ofsset into the last executed instruction.
+ * Does not raise an exception. */
+PyAPI_FUNC(int) PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame);
+
+/* Returns the currently executing line number, or -1 if there is no line number.
+ * Does not raise an exception. */
+PyAPI_FUNC(int) PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame);
+
+#define PyUnstable_EXECUTABLE_KIND_SKIP 0
+#define PyUnstable_EXECUTABLE_KIND_PY_FUNCTION 1
+#define PyUnstable_EXECUTABLE_KIND_BUILTIN_FUNCTION 3
+#define PyUnstable_EXECUTABLE_KIND_METHOD_DESCRIPTOR 4
+#define PyUnstable_EXECUTABLE_KINDS 5
+
+PyAPI_DATA(const PyTypeObject *) const PyUnstable_ExecutableKinds[PyUnstable_EXECUTABLE_KINDS+1];
diff --git a/Include/cpython/pyhash.h b/Include/cpython/pyhash.h
new file mode 100644
index 00000000000000..396c208e1b106a
--- /dev/null
+++ b/Include/cpython/pyhash.h
@@ -0,0 +1,39 @@
+#ifndef Py_CPYTHON_HASH_H
+#  error "this header file must not be included directly"
+#endif
+
+/* Prime multiplier used in string and various other hashes. */
+#define _PyHASH_MULTIPLIER 1000003UL  /* 0xf4243 */
+
+/* Parameters used for the numeric hash implementation.  See notes for
+   _Py_HashDouble in Python/pyhash.c.  Numeric hashes are based on
+   reduction modulo the prime 2**_PyHASH_BITS - 1. */
+
+#if SIZEOF_VOID_P >= 8
+#  define _PyHASH_BITS 61
+#else
+#  define _PyHASH_BITS 31
+#endif
+
+#define _PyHASH_MODULUS (((size_t)1 << _PyHASH_BITS) - 1)
+#define _PyHASH_INF 314159
+#define _PyHASH_IMAG _PyHASH_MULTIPLIER
+
+/* Helpers for hash functions */
+PyAPI_FUNC(Py_hash_t) _Py_HashDouble(PyObject *, double);
+
+// Kept for backward compatibility
+#define _Py_HashPointer Py_HashPointer
+
+
+/* hash function definition */
+typedef struct {
+    Py_hash_t (*const hash)(const void *, Py_ssize_t);
+    const char *name;
+    const int hash_bits;
+    const int seed_bits;
+} PyHash_FuncDef;
+
+PyAPI_FUNC(PyHash_FuncDef*) PyHash_GetFuncDef(void);
+
+PyAPI_FUNC(Py_hash_t) Py_HashPointer(const void *ptr);
diff --git a/Include/cpython/pylifecycle.h b/Include/cpython/pylifecycle.h
index 08569ee683ce0d..d425a233f71000 100644
--- a/Include/cpython/pylifecycle.h
+++ b/Include/cpython/pylifecycle.h
@@ -6,13 +6,6 @@
    in all builds of Python */
 PyAPI_FUNC(int) Py_FrozenMain(int argc, char **argv);
 
-/* Only used by applications that embed the interpreter and need to
- * override the standard encoding determination mechanism
- */
-Py_DEPRECATED(3.11) PyAPI_FUNC(int) Py_SetStandardStreamEncoding(
-    const char *encoding,
-    const char *errors);
-
 /* PEP 432 Multi-phase initialization API (Private while provisional!) */
 
 PyAPI_FUNC(PyStatus) Py_PreInitialize(
@@ -26,13 +19,13 @@ PyAPI_FUNC(PyStatus) Py_PreInitializeFromArgs(
     Py_ssize_t argc,
     wchar_t **argv);
 
-PyAPI_FUNC(int) _Py_IsCoreInitialized(void);
-
 
 /* Initialization and finalization */
 
 PyAPI_FUNC(PyStatus) Py_InitializeFromConfig(
     const PyConfig *config);
+
+// Python 3.8 provisional API (PEP 587)
 PyAPI_FUNC(PyStatus) _Py_InitializeMain(void);
 
 PyAPI_FUNC(int) Py_RunMain(void);
@@ -40,32 +33,51 @@ PyAPI_FUNC(int) Py_RunMain(void);
 
 PyAPI_FUNC(void) _Py_NO_RETURN Py_ExitStatusException(PyStatus err);
 
-/* Restore signals that the interpreter has called SIG_IGN on to SIG_DFL. */
-PyAPI_FUNC(void) _Py_RestoreSignals(void);
-
 PyAPI_FUNC(int) Py_FdIsInteractive(FILE *, const char *);
-PyAPI_FUNC(int) _Py_FdIsInteractive(FILE *fp, PyObject *filename);
-
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) _Py_SetProgramFullPath(const wchar_t *);
-
-PyAPI_FUNC(const char *) _Py_gitidentifier(void);
-PyAPI_FUNC(const char *) _Py_gitversion(void);
-
-PyAPI_FUNC(int) _Py_IsFinalizing(void);
-
-/* Random */
-PyAPI_FUNC(int) _PyOS_URandom(void *buffer, Py_ssize_t size);
-PyAPI_FUNC(int) _PyOS_URandomNonblock(void *buffer, Py_ssize_t size);
 
-/* Legacy locale support */
-PyAPI_FUNC(int) _Py_CoerceLegacyLocale(int warn);
-PyAPI_FUNC(int) _Py_LegacyLocaleDetected(int warn);
-PyAPI_FUNC(char *) _Py_SetLocaleFromEnv(int category);
+/* --- PyInterpreterConfig ------------------------------------ */
+
+#define PyInterpreterConfig_DEFAULT_GIL (0)
+#define PyInterpreterConfig_SHARED_GIL (1)
+#define PyInterpreterConfig_OWN_GIL (2)
+
+typedef struct {
+    // XXX "allow_object_sharing"?  "own_objects"?
+    int use_main_obmalloc;
+    int allow_fork;
+    int allow_exec;
+    int allow_threads;
+    int allow_daemon_threads;
+    int check_multi_interp_extensions;
+    int gil;
+} PyInterpreterConfig;
+
+#define _PyInterpreterConfig_INIT \
+    { \
+        .use_main_obmalloc = 0, \
+        .allow_fork = 0, \
+        .allow_exec = 0, \
+        .allow_threads = 1, \
+        .allow_daemon_threads = 0, \
+        .check_multi_interp_extensions = 1, \
+        .gil = PyInterpreterConfig_OWN_GIL, \
+    }
+
+#define _PyInterpreterConfig_LEGACY_INIT \
+    { \
+        .use_main_obmalloc = 1, \
+        .allow_fork = 1, \
+        .allow_exec = 1, \
+        .allow_threads = 1, \
+        .allow_daemon_threads = 1, \
+        .check_multi_interp_extensions = 0, \
+        .gil = PyInterpreterConfig_SHARED_GIL, \
+    }
 
 PyAPI_FUNC(PyStatus) Py_NewInterpreterFromConfig(
     PyThreadState **tstate_p,
     const PyInterpreterConfig *config);
 
 typedef void (*atexit_datacallbackfunc)(void *);
-PyAPI_FUNC(int) _Py_AtExit(
+PyAPI_FUNC(int) PyUnstable_AtExit(
         PyInterpreterState *, atexit_datacallbackfunc, void *);
diff --git a/Include/cpython/pymem.h b/Include/cpython/pymem.h
index d1054d76520b9a..76b3221f7b9f39 100644
--- a/Include/cpython/pymem.h
+++ b/Include/cpython/pymem.h
@@ -2,24 +2,6 @@
 #  error "this header file must not be included directly"
 #endif
 
-PyAPI_FUNC(void *) PyMem_RawMalloc(size_t size);
-PyAPI_FUNC(void *) PyMem_RawCalloc(size_t nelem, size_t elsize);
-PyAPI_FUNC(void *) PyMem_RawRealloc(void *ptr, size_t new_size);
-PyAPI_FUNC(void) PyMem_RawFree(void *ptr);
-
-/* Try to get the allocators name set by _PyMem_SetupAllocators(). */
-PyAPI_FUNC(const char*) _PyMem_GetCurrentAllocatorName(void);
-
-/* strdup() using PyMem_RawMalloc() */
-PyAPI_FUNC(char *) _PyMem_RawStrdup(const char *str);
-
-/* strdup() using PyMem_Malloc() */
-PyAPI_FUNC(char *) _PyMem_Strdup(const char *str);
-
-/* wcsdup() using PyMem_RawMalloc() */
-PyAPI_FUNC(wchar_t*) _PyMem_RawWcsdup(const wchar_t *str);
-
-
 typedef enum {
     /* PyMem_RawMalloc(), PyMem_RawRealloc() and PyMem_RawFree() */
     PYMEM_DOMAIN_RAW,
@@ -41,6 +23,10 @@ typedef enum {
     PYMEM_ALLOCATOR_PYMALLOC = 5,
     PYMEM_ALLOCATOR_PYMALLOC_DEBUG = 6,
 #endif
+#ifdef WITH_MIMALLOC
+    PYMEM_ALLOCATOR_MIMALLOC = 7,
+    PYMEM_ALLOCATOR_MIMALLOC_DEBUG = 8,
+#endif
 } PyMemAllocatorName;
 
 
diff --git a/Include/cpython/pystate.h b/Include/cpython/pystate.h
index f33c72d4cf4d2a..56172d231c44f4 100644
--- a/Include/cpython/pystate.h
+++ b/Include/cpython/pystate.h
@@ -3,45 +3,12 @@
 #endif
 
 
-/*
-Runtime Feature Flags
-
-Each flag indicate whether or not a specific runtime feature
-is available in a given context.  For example, forking the process
-might not be allowed in the current interpreter (i.e. os.fork() would fail).
-*/
-
-/* Set if the interpreter share obmalloc runtime state
-   with the main interpreter. */
-#define Py_RTFLAGS_USE_MAIN_OBMALLOC (1UL << 5)
-
-/* Set if import should check a module for subinterpreter support. */
-#define Py_RTFLAGS_MULTI_INTERP_EXTENSIONS (1UL << 8)
-
-/* Set if threads are allowed. */
-#define Py_RTFLAGS_THREADS (1UL << 10)
-
-/* Set if daemon threads are allowed. */
-#define Py_RTFLAGS_DAEMON_THREADS (1UL << 11)
-
-/* Set if os.fork() is allowed. */
-#define Py_RTFLAGS_FORK (1UL << 15)
-
-/* Set if os.exec*() is allowed. */
-#define Py_RTFLAGS_EXEC (1UL << 16)
-
-
-PyAPI_FUNC(int) _PyInterpreterState_HasFeature(PyInterpreterState *interp,
-                                               unsigned long feature);
-
-
 /* private interpreter helpers */
 
 PyAPI_FUNC(int) _PyInterpreterState_RequiresIDRef(PyInterpreterState *);
 PyAPI_FUNC(void) _PyInterpreterState_RequireIDRef(PyInterpreterState *, int);
 
-PyAPI_FUNC(PyObject *) _PyInterpreterState_GetMainModule(PyInterpreterState *);
-
+PyAPI_FUNC(PyObject *) PyUnstable_InterpreterState_GetMainModule(PyInterpreterState *);
 
 /* State unique per thread */
 
@@ -62,24 +29,6 @@ typedef int (*Py_tracefunc)(PyObject *, PyFrameObject *, int, PyObject *);
 #define PyTrace_C_RETURN 6
 #define PyTrace_OPCODE 7
 
-// Internal structure: you should not use it directly, but use public functions
-// like PyThreadState_EnterTracing() and PyThreadState_LeaveTracing().
-typedef struct _PyCFrame {
-    /* This struct will be threaded through the C stack
-     * allowing fast access to per-thread state that needs
-     * to be accessed quickly by the interpreter, but can
-     * be modified outside of the interpreter.
-     *
-     * WARNING: This makes data on the C stack accessible from
-     * heap objects. Care must be taken to maintain stack
-     * discipline and make sure that instances of this struct cannot
-     * accessed outside of their lifetime.
-     */
-    /* Pointer to the currently executing frame (it can be NULL) */
-    struct _PyInterpreterFrame *current_frame;
-    struct _PyCFrame *previous;
-} _PyCFrame;
-
 typedef struct _err_stackitem {
     /* This struct represents a single execution context where we might
      * be currently handling an exception.  It is a per-coroutine state
@@ -143,6 +92,19 @@ struct _ts {
         /* padding to align to 4 bytes */
         unsigned int :24;
     } _status;
+#ifdef Py_BUILD_CORE
+#  define _PyThreadState_WHENCE_NOTSET -1
+#  define _PyThreadState_WHENCE_UNKNOWN 0
+#  define _PyThreadState_WHENCE_INTERP 1
+#  define _PyThreadState_WHENCE_THREADING 2
+#  define _PyThreadState_WHENCE_GILSTATE 3
+#  define _PyThreadState_WHENCE_EXEC 4
+#endif
+    int _whence;
+
+    /* Thread state (_Py_THREAD_ATTACHED, _Py_THREAD_DETACHED, _Py_THREAD_GC).
+       See Include/internal/pycore_pystate.h for more details. */
+    int state;
 
     int py_recursion_remaining;
     int py_recursion_limit;
@@ -156,9 +118,8 @@ struct _ts {
     int tracing;
     int what_event; /* The event currently being monitored, if any. */
 
-    /* Pointer to current _PyCFrame in the C stack frame of the currently,
-     * or most recently, executing _PyEval_EvalFrameDefault. */
-    _PyCFrame *cframe;
+    /* Pointer to currently executing frame. */
+    struct _PyInterpreterFrame *current_frame;
 
     Py_tracefunc c_profilefunc;
     Py_tracefunc c_tracefunc;
@@ -188,6 +149,13 @@ struct _ts {
 
     struct _py_trashcan trash;
 
+    /* Tagged pointer to top-most critical section, or zero if there is no
+     * active critical section. Critical sections are only used in
+     * `--disable-gil` builds (i.e., when Py_GIL_DISABLED is defined to 1). In the
+     * default build, this field is always zero.
+     */
+    uintptr_t critical_section;
+
     /* Called when a thread state is deleted normally, but not when it
      * is destroyed after fork().
      * Pain:  to prevent rare but fatal shutdown errors (issue 18808),
@@ -244,35 +212,32 @@ struct _ts {
     /* The thread's exception stack entry.  (Always the last entry.) */
     _PyErr_StackItem exc_state;
 
-    /* The bottom-most frame on the stack. */
-    _PyCFrame root_cframe;
 };
 
-/* WASI has limited call stack. Python's recursion limit depends on code
-   layout, optimization, and WASI runtime. Wasmtime can handle about 700
-   recursions, sometimes less. 500 is a more conservative limit. */
-#ifndef C_RECURSION_LIMIT
-#  ifdef __wasi__
-#    define C_RECURSION_LIMIT 500
-#  else
-#    define C_RECURSION_LIMIT 800
-#  endif
+#ifdef Py_DEBUG
+   // A debug build is likely built with low optimization level which implies
+   // higher stack memory usage than a release build: use a lower limit.
+#  define Py_C_RECURSION_LIMIT 500
+#elif defined(__wasi__)
+   // WASI has limited call stack. Python's recursion limit depends on code
+   // layout, optimization, and WASI runtime. Wasmtime can handle about 700
+   // recursions, sometimes less. 500 is a more conservative limit.
+#  define Py_C_RECURSION_LIMIT 500
+#else
+   // This value is duplicated in Lib/test/support/__init__.py
+#  define Py_C_RECURSION_LIMIT 1500
 #endif
 
-/* other API */
 
-// Alias for backward compatibility with Python 3.8
-#define _PyInterpreterState_Get PyInterpreterState_Get
-
-/* An alias for the internal _PyThreadState_New(),
-   kept for stable ABI compatibility. */
-PyAPI_FUNC(PyThreadState *) _PyThreadState_Prealloc(PyInterpreterState *);
+/* other API */
 
 /* Similar to PyThreadState_Get(), but don't issue a fatal error
  * if it is NULL. */
-PyAPI_FUNC(PyThreadState *) _PyThreadState_UncheckedGet(void);
+PyAPI_FUNC(PyThreadState *) PyThreadState_GetUnchecked(void);
+
+// Alias kept for backward compatibility
+#define _PyThreadState_UncheckedGet PyThreadState_GetUnchecked
 
-PyAPI_FUNC(PyObject *) _PyThreadState_GetDict(PyThreadState *tstate);
 
 // Disable tracing and profiling.
 PyAPI_FUNC(void) PyThreadState_EnterTracing(PyThreadState *tstate);
@@ -289,24 +254,10 @@ PyAPI_FUNC(void) PyThreadState_LeaveTracing(PyThreadState *tstate);
    The function returns 1 if _PyGILState_check_enabled is non-zero. */
 PyAPI_FUNC(int) PyGILState_Check(void);
 
-/* Get the single PyInterpreterState used by this process' GILState
-   implementation.
-
-   This function doesn't check for error. Return NULL before _PyGILState_Init()
-   is called and after _PyGILState_Fini() is called.
-
-   See also _PyInterpreterState_Get() and _PyInterpreterState_GET(). */
-PyAPI_FUNC(PyInterpreterState *) _PyGILState_GetInterpreterStateUnsafe(void);
-
 /* The implementation of sys._current_frames()  Returns a dict mapping
    thread id to that thread's current frame.
 */
-PyAPI_FUNC(PyObject *) _PyThread_CurrentFrames(void);
-
-/* The implementation of sys._current_exceptions()  Returns a dict mapping
-   thread id to that thread's current exception.
-*/
-PyAPI_FUNC(PyObject *) _PyThread_CurrentExceptions(void);
+PyAPI_FUNC(PyObject*) _PyThread_CurrentFrames(void);
 
 /* Routines for advanced debuggers, requested by David Beazley.
    Don't use unless you know what you are doing! */
@@ -326,118 +277,3 @@ PyAPI_FUNC(_PyFrameEvalFunction) _PyInterpreterState_GetEvalFrameFunc(
 PyAPI_FUNC(void) _PyInterpreterState_SetEvalFrameFunc(
     PyInterpreterState *interp,
     _PyFrameEvalFunction eval_frame);
-
-PyAPI_FUNC(const PyConfig*) _PyInterpreterState_GetConfig(PyInterpreterState *interp);
-
-/* Get a copy of the current interpreter configuration.
-
-   Return 0 on success. Raise an exception and return -1 on error.
-
-   The caller must initialize 'config', using PyConfig_InitPythonConfig()
-   for example.
-
-   Python must be preinitialized to call this method.
-   The caller must hold the GIL.
-
-   Once done with the configuration, PyConfig_Clear() must be called to clear
-   it. */
-PyAPI_FUNC(int) _PyInterpreterState_GetConfigCopy(
-    struct PyConfig *config);
-
-/* Set the configuration of the current interpreter.
-
-   This function should be called during or just after the Python
-   initialization.
-
-   Update the sys module with the new configuration. If the sys module was
-   modified directly after the Python initialization, these changes are lost.
-
-   Some configuration like faulthandler or warnoptions can be updated in the
-   configuration, but don't reconfigure Python (don't enable/disable
-   faulthandler and don't reconfigure warnings filters).
-
-   Return 0 on success. Raise an exception and return -1 on error.
-
-   The configuration should come from _PyInterpreterState_GetConfigCopy(). */
-PyAPI_FUNC(int) _PyInterpreterState_SetConfig(
-    const struct PyConfig *config);
-
-// Get the configuration of the current interpreter.
-// The caller must hold the GIL.
-PyAPI_FUNC(const PyConfig*) _Py_GetConfig(void);
-
-
-/* cross-interpreter data */
-
-// _PyCrossInterpreterData is similar to Py_buffer as an effectively
-// opaque struct that holds data outside the object machinery.  This
-// is necessary to pass safely between interpreters in the same process.
-typedef struct _xid _PyCrossInterpreterData;
-
-typedef PyObject *(*xid_newobjectfunc)(_PyCrossInterpreterData *);
-typedef void (*xid_freefunc)(void *);
-
-struct _xid {
-    // data is the cross-interpreter-safe derivation of a Python object
-    // (see _PyObject_GetCrossInterpreterData).  It will be NULL if the
-    // new_object func (below) encodes the data.
-    void *data;
-    // obj is the Python object from which the data was derived.  This
-    // is non-NULL only if the data remains bound to the object in some
-    // way, such that the object must be "released" (via a decref) when
-    // the data is released.  In that case the code that sets the field,
-    // likely a registered "crossinterpdatafunc", is responsible for
-    // ensuring it owns the reference (i.e. incref).
-    PyObject *obj;
-    // interp is the ID of the owning interpreter of the original
-    // object.  It corresponds to the active interpreter when
-    // _PyObject_GetCrossInterpreterData() was called.  This should only
-    // be set by the cross-interpreter machinery.
-    //
-    // We use the ID rather than the PyInterpreterState to avoid issues
-    // with deleted interpreters.  Note that IDs are never re-used, so
-    // each one will always correspond to a specific interpreter
-    // (whether still alive or not).
-    int64_t interp;
-    // new_object is a function that returns a new object in the current
-    // interpreter given the data.  The resulting object (a new
-    // reference) will be equivalent to the original object.  This field
-    // is required.
-    xid_newobjectfunc new_object;
-    // free is called when the data is released.  If it is NULL then
-    // nothing will be done to free the data.  For some types this is
-    // okay (e.g. bytes) and for those types this field should be set
-    // to NULL.  However, for most the data was allocated just for
-    // cross-interpreter use, so it must be freed when
-    // _PyCrossInterpreterData_Release is called or the memory will
-    // leak.  In that case, at the very least this field should be set
-    // to PyMem_RawFree (the default if not explicitly set to NULL).
-    // The call will happen with the original interpreter activated.
-    xid_freefunc free;
-};
-
-PyAPI_FUNC(void) _PyCrossInterpreterData_Init(
-        _PyCrossInterpreterData *data,
-        PyInterpreterState *interp, void *shared, PyObject *obj,
-        xid_newobjectfunc new_object);
-PyAPI_FUNC(int) _PyCrossInterpreterData_InitWithSize(
-        _PyCrossInterpreterData *,
-        PyInterpreterState *interp, const size_t, PyObject *,
-        xid_newobjectfunc);
-PyAPI_FUNC(void) _PyCrossInterpreterData_Clear(
-        PyInterpreterState *, _PyCrossInterpreterData *);
-
-PyAPI_FUNC(int) _PyObject_GetCrossInterpreterData(PyObject *, _PyCrossInterpreterData *);
-PyAPI_FUNC(PyObject *) _PyCrossInterpreterData_NewObject(_PyCrossInterpreterData *);
-PyAPI_FUNC(int) _PyCrossInterpreterData_Release(_PyCrossInterpreterData *);
-
-PyAPI_FUNC(int) _PyObject_CheckCrossInterpreterData(PyObject *);
-
-/* cross-interpreter data registry */
-
-typedef int (*crossinterpdatafunc)(PyThreadState *tstate, PyObject *,
-                                   _PyCrossInterpreterData *);
-
-PyAPI_FUNC(int) _PyCrossInterpreterData_RegisterClass(PyTypeObject *, crossinterpdatafunc);
-PyAPI_FUNC(int) _PyCrossInterpreterData_UnregisterClass(PyTypeObject *);
-PyAPI_FUNC(crossinterpdatafunc) _PyCrossInterpreterData_Lookup(PyObject *);
diff --git a/Include/cpython/pystats.h b/Include/cpython/pystats.h
new file mode 100644
index 00000000000000..294bf1505f0115
--- /dev/null
+++ b/Include/cpython/pystats.h
@@ -0,0 +1,142 @@
+// Statistics on Python performance.
+//
+// API:
+//
+// - _Py_INCREF_STAT_INC() and _Py_DECREF_STAT_INC() used by Py_INCREF()
+//   and Py_DECREF().
+// - _Py_stats variable
+//
+// Functions of the sys module:
+//
+// - sys._stats_on()
+// - sys._stats_off()
+// - sys._stats_clear()
+// - sys._stats_dump()
+//
+// Python must be built with ./configure --enable-pystats to define the
+// Py_STATS macro.
+//
+// Define _PY_INTERPRETER macro to increment interpreter_increfs and
+// interpreter_decrefs. Otherwise, increment increfs and decrefs.
+
+#ifndef Py_CPYTHON_PYSTATS_H
+#  error "this header file must not be included directly"
+#endif
+
+#define SPECIALIZATION_FAILURE_KINDS 36
+
+/* Stats for determining who is calling PyEval_EvalFrame */
+#define EVAL_CALL_TOTAL 0
+#define EVAL_CALL_VECTOR 1
+#define EVAL_CALL_GENERATOR 2
+#define EVAL_CALL_LEGACY 3
+#define EVAL_CALL_FUNCTION_VECTORCALL 4
+#define EVAL_CALL_BUILD_CLASS 5
+#define EVAL_CALL_SLOT 6
+#define EVAL_CALL_FUNCTION_EX 7
+#define EVAL_CALL_API 8
+#define EVAL_CALL_METHOD 9
+
+#define EVAL_CALL_KINDS 10
+
+typedef struct _specialization_stats {
+    uint64_t success;
+    uint64_t failure;
+    uint64_t hit;
+    uint64_t deferred;
+    uint64_t miss;
+    uint64_t deopt;
+    uint64_t failure_kinds[SPECIALIZATION_FAILURE_KINDS];
+} SpecializationStats;
+
+typedef struct _opcode_stats {
+    SpecializationStats specialization;
+    uint64_t execution_count;
+    uint64_t pair_count[256];
+} OpcodeStats;
+
+typedef struct _call_stats {
+    uint64_t inlined_py_calls;
+    uint64_t pyeval_calls;
+    uint64_t frames_pushed;
+    uint64_t frame_objects_created;
+    uint64_t eval_calls[EVAL_CALL_KINDS];
+} CallStats;
+
+typedef struct _object_stats {
+    uint64_t increfs;
+    uint64_t decrefs;
+    uint64_t interpreter_increfs;
+    uint64_t interpreter_decrefs;
+    uint64_t allocations;
+    uint64_t allocations512;
+    uint64_t allocations4k;
+    uint64_t allocations_big;
+    uint64_t frees;
+    uint64_t to_freelist;
+    uint64_t from_freelist;
+    uint64_t new_values;
+    uint64_t dict_materialized_on_request;
+    uint64_t dict_materialized_new_key;
+    uint64_t dict_materialized_too_big;
+    uint64_t dict_materialized_str_subclass;
+    uint64_t dict_dematerialized;
+    uint64_t type_cache_hits;
+    uint64_t type_cache_misses;
+    uint64_t type_cache_dunder_hits;
+    uint64_t type_cache_dunder_misses;
+    uint64_t type_cache_collisions;
+    /* Temporary value used during GC */
+    uint64_t object_visits;
+} ObjectStats;
+
+typedef struct _gc_stats {
+    uint64_t collections;
+    uint64_t object_visits;
+    uint64_t objects_collected;
+} GCStats;
+
+typedef struct _uop_stats {
+    uint64_t execution_count;
+    uint64_t miss;
+} UOpStats;
+
+#define _Py_UOP_HIST_SIZE 32
+
+typedef struct _optimization_stats {
+    uint64_t attempts;
+    uint64_t traces_created;
+    uint64_t traces_executed;
+    uint64_t uops_executed;
+    uint64_t trace_stack_overflow;
+    uint64_t trace_stack_underflow;
+    uint64_t trace_too_long;
+    uint64_t trace_too_short;
+    uint64_t inner_loop;
+    uint64_t recursive_call;
+    UOpStats opcode[512];
+    uint64_t unsupported_opcode[256];
+    uint64_t trace_length_hist[_Py_UOP_HIST_SIZE];
+    uint64_t trace_run_length_hist[_Py_UOP_HIST_SIZE];
+    uint64_t optimized_trace_length_hist[_Py_UOP_HIST_SIZE];
+} OptimizationStats;
+
+typedef struct _stats {
+    OpcodeStats opcode_stats[256];
+    CallStats call_stats;
+    ObjectStats object_stats;
+    OptimizationStats optimization_stats;
+    GCStats *gc_stats;
+} PyStats;
+
+
+// Export for shared extensions like 'math'
+PyAPI_DATA(PyStats*) _Py_stats;
+
+#ifdef _PY_INTERPRETER
+#  define _Py_INCREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.interpreter_increfs++; } while (0)
+#  define _Py_DECREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.interpreter_decrefs++; } while (0)
+#else
+#  define _Py_INCREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.increfs++; } while (0)
+#  define _Py_DECREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.decrefs++; } while (0)
+#endif
diff --git a/Include/cpython/pythonrun.h b/Include/cpython/pythonrun.h
index fb617655374026..edc40952254029 100644
--- a/Include/cpython/pythonrun.h
+++ b/Include/cpython/pythonrun.h
@@ -3,21 +3,11 @@
 #endif
 
 PyAPI_FUNC(int) PyRun_SimpleStringFlags(const char *, PyCompilerFlags *);
-PyAPI_FUNC(int) _PyRun_SimpleFileObject(
-    FILE *fp,
-    PyObject *filename,
-    int closeit,
-    PyCompilerFlags *flags);
 PyAPI_FUNC(int) PyRun_AnyFileExFlags(
     FILE *fp,
     const char *filename,       /* decoded from the filesystem encoding */
     int closeit,
     PyCompilerFlags *flags);
-PyAPI_FUNC(int) _PyRun_AnyFileObject(
-    FILE *fp,
-    PyObject *filename,
-    int closeit,
-    PyCompilerFlags *flags);
 PyAPI_FUNC(int) PyRun_SimpleFileExFlags(
     FILE *fp,
     const char *filename,       /* decoded from the filesystem encoding */
@@ -35,10 +25,6 @@ PyAPI_FUNC(int) PyRun_InteractiveLoopFlags(
     FILE *fp,
     const char *filename,       /* decoded from the filesystem encoding */
     PyCompilerFlags *flags);
-PyAPI_FUNC(int) _PyRun_InteractiveLoopObject(
-    FILE *fp,
-    PyObject *filename,
-    PyCompilerFlags *flags);
 
 
 PyAPI_FUNC(PyObject *) PyRun_StringFlags(const char *, int, PyObject *,
@@ -69,15 +55,6 @@ PyAPI_FUNC(PyObject *) Py_CompileStringObject(
 #define Py_CompileString(str, p, s) Py_CompileStringExFlags((str), (p), (s), NULL, -1)
 #define Py_CompileStringFlags(str, p, s, f) Py_CompileStringExFlags((str), (p), (s), (f), -1)
 
-
-PyAPI_FUNC(const char *) _Py_SourceAsString(
-    PyObject *cmd,
-    const char *funcname,
-    const char *what,
-    PyCompilerFlags *cf,
-    PyObject **cmd_copy);
-
-
 /* A function flavor is also exported by libpython. It is required when
     libpython is accessed directly rather than using header files which defines
     macros below. On Windows, for example, PyAPI_FUNC() uses dllexport to
@@ -114,8 +91,6 @@ PyAPI_FUNC(PyObject *) PyRun_FileFlags(FILE *fp, const char *p, int s, PyObject
 #define PyRun_FileFlags(fp, p, s, g, l, flags) \
     PyRun_FileExFlags((fp), (p), (s), (g), (l), 0, (flags))
 
-
 /* Stuff with no proper home (yet) */
 PyAPI_FUNC(char *) PyOS_Readline(FILE *, FILE *, const char *);
-PyAPI_DATA(PyThreadState*) _PyOS_ReadlineTState;
 PyAPI_DATA(char) *(*PyOS_ReadlineFunctionPointer)(FILE *, FILE *, const char *);
diff --git a/Include/cpython/pythread.h b/Include/cpython/pythread.h
index ce4ec8f65b15ea..03f710a9f7ef2e 100644
--- a/Include/cpython/pythread.h
+++ b/Include/cpython/pythread.h
@@ -2,14 +2,15 @@
 #  error "this header file must not be included directly"
 #endif
 
-#define PYTHREAD_INVALID_THREAD_ID ((unsigned long)-1)
+// PY_TIMEOUT_MAX is the highest usable value (in microseconds) of PY_TIMEOUT_T
+// type, and depends on the system threading API.
+//
+// NOTE: this isn't the same value as `_thread.TIMEOUT_MAX`. The _thread module
+// exposes a higher-level API, with timeouts expressed in seconds and
+// floating-point numbers allowed.
+PyAPI_DATA(const long long) PY_TIMEOUT_MAX;
 
-#ifdef HAVE_FORK
-/* Private function to reinitialize a lock at fork in the child process.
-   Reset the lock to the unlocked state.
-   Return 0 on success, return -1 on error. */
-PyAPI_FUNC(int) _PyThread_at_fork_reinit(PyThread_type_lock *lock);
-#endif  /* HAVE_FORK */
+#define PYTHREAD_INVALID_THREAD_ID ((unsigned long)-1)
 
 #ifdef HAVE_PTHREAD_H
     /* Darwin needs pthread.h to know type name the pthread_key_t. */
diff --git a/Include/cpython/pytime.h b/Include/cpython/pytime.h
deleted file mode 100644
index 16d88d191e9e25..00000000000000
--- a/Include/cpython/pytime.h
+++ /dev/null
@@ -1,331 +0,0 @@
-// The _PyTime_t API is written to use timestamp and timeout values stored in
-// various formats and to read clocks.
-//
-// The _PyTime_t type is an integer to support directly common arithmetic
-// operations like t1 + t2.
-//
-// The _PyTime_t API supports a resolution of 1 nanosecond. The _PyTime_t type
-// is signed to support negative timestamps. The supported range is around
-// [-292.3 years; +292.3 years]. Using the Unix epoch (January 1st, 1970), the
-// supported date range is around [1677-09-21; 2262-04-11].
-//
-// Formats:
-//
-// * seconds
-// * seconds as a floating pointer number (C double)
-// * milliseconds (10^-3 seconds)
-// * microseconds (10^-6 seconds)
-// * 100 nanoseconds (10^-7 seconds)
-// * nanoseconds (10^-9 seconds)
-// * timeval structure, 1 microsecond resolution (10^-6 seconds)
-// * timespec structure, 1 nanosecond resolution (10^-9 seconds)
-//
-// Integer overflows are detected and raise OverflowError. Conversion to a
-// resolution worse than 1 nanosecond is rounded correctly with the requested
-// rounding mode. There are 4 rounding modes: floor (towards -inf), ceiling
-// (towards +inf), half even and up (away from zero).
-//
-// Some functions clamp the result in the range [_PyTime_MIN; _PyTime_MAX], so
-// the caller doesn't have to handle errors and doesn't need to hold the GIL.
-// For example, _PyTime_Add(t1, t2) computes t1+t2 and clamp the result on
-// overflow.
-//
-// Clocks:
-//
-// * System clock
-// * Monotonic clock
-// * Performance counter
-//
-// Operations like (t * k / q) with integers are implemented in a way to reduce
-// the risk of integer overflow. Such operation is used to convert a clock
-// value expressed in ticks with a frequency to _PyTime_t, like
-// QueryPerformanceCounter() with QueryPerformanceFrequency().
-
-#ifndef Py_LIMITED_API
-#ifndef Py_PYTIME_H
-#define Py_PYTIME_H
-
-/**************************************************************************
-Symbols and macros to supply platform-independent interfaces to time related
-functions and constants
-**************************************************************************/
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef __clang__
-struct timeval;
-#endif
-
-/* _PyTime_t: Python timestamp with subsecond precision. It can be used to
-   store a duration, and so indirectly a date (related to another date, like
-   UNIX epoch). */
-typedef int64_t _PyTime_t;
-// _PyTime_MIN nanoseconds is around -292.3 years
-#define _PyTime_MIN INT64_MIN
-// _PyTime_MAX nanoseconds is around +292.3 years
-#define _PyTime_MAX INT64_MAX
-#define _SIZEOF_PYTIME_T 8
-
-typedef enum {
-    /* Round towards minus infinity (-inf).
-       For example, used to read a clock. */
-    _PyTime_ROUND_FLOOR=0,
-    /* Round towards infinity (+inf).
-       For example, used for timeout to wait "at least" N seconds. */
-    _PyTime_ROUND_CEILING=1,
-    /* Round to nearest with ties going to nearest even integer.
-       For example, used to round from a Python float. */
-    _PyTime_ROUND_HALF_EVEN=2,
-    /* Round away from zero
-       For example, used for timeout. _PyTime_ROUND_CEILING rounds
-       -1e-9 to 0 milliseconds which causes bpo-31786 issue.
-       _PyTime_ROUND_UP rounds -1e-9 to -1 millisecond which keeps
-       the timeout sign as expected. select.poll(timeout) must block
-       for negative values." */
-    _PyTime_ROUND_UP=3,
-    /* _PyTime_ROUND_TIMEOUT (an alias for _PyTime_ROUND_UP) should be
-       used for timeouts. */
-    _PyTime_ROUND_TIMEOUT = _PyTime_ROUND_UP
-} _PyTime_round_t;
-
-
-/* Convert a time_t to a PyLong. */
-PyAPI_FUNC(PyObject *) _PyLong_FromTime_t(
-    time_t sec);
-
-/* Convert a PyLong to a time_t. */
-PyAPI_FUNC(time_t) _PyLong_AsTime_t(
-    PyObject *obj);
-
-/* Convert a number of seconds, int or float, to time_t. */
-PyAPI_FUNC(int) _PyTime_ObjectToTime_t(
-    PyObject *obj,
-    time_t *sec,
-    _PyTime_round_t);
-
-/* Convert a number of seconds, int or float, to a timeval structure.
-   usec is in the range [0; 999999] and rounded towards zero.
-   For example, -1.2 is converted to (-2, 800000). */
-PyAPI_FUNC(int) _PyTime_ObjectToTimeval(
-    PyObject *obj,
-    time_t *sec,
-    long *usec,
-    _PyTime_round_t);
-
-/* Convert a number of seconds, int or float, to a timespec structure.
-   nsec is in the range [0; 999999999] and rounded towards zero.
-   For example, -1.2 is converted to (-2, 800000000). */
-PyAPI_FUNC(int) _PyTime_ObjectToTimespec(
-    PyObject *obj,
-    time_t *sec,
-    long *nsec,
-    _PyTime_round_t);
-
-
-/* Create a timestamp from a number of seconds. */
-PyAPI_FUNC(_PyTime_t) _PyTime_FromSeconds(int seconds);
-
-/* Macro to create a timestamp from a number of seconds, no integer overflow.
-   Only use the macro for small values, prefer _PyTime_FromSeconds(). */
-#define _PYTIME_FROMSECONDS(seconds) \
-            ((_PyTime_t)(seconds) * (1000 * 1000 * 1000))
-
-/* Create a timestamp from a number of nanoseconds. */
-PyAPI_FUNC(_PyTime_t) _PyTime_FromNanoseconds(_PyTime_t ns);
-
-/* Create a timestamp from a number of microseconds.
- * Clamp to [_PyTime_MIN; _PyTime_MAX] on overflow. */
-PyAPI_FUNC(_PyTime_t) _PyTime_FromMicrosecondsClamp(_PyTime_t us);
-
-/* Create a timestamp from nanoseconds (Python int). */
-PyAPI_FUNC(int) _PyTime_FromNanosecondsObject(_PyTime_t *t,
-    PyObject *obj);
-
-/* Convert a number of seconds (Python float or int) to a timestamp.
-   Raise an exception and return -1 on error, return 0 on success. */
-PyAPI_FUNC(int) _PyTime_FromSecondsObject(_PyTime_t *t,
-    PyObject *obj,
-    _PyTime_round_t round);
-
-/* Convert a number of milliseconds (Python float or int, 10^-3) to a timestamp.
-   Raise an exception and return -1 on error, return 0 on success. */
-PyAPI_FUNC(int) _PyTime_FromMillisecondsObject(_PyTime_t *t,
-    PyObject *obj,
-    _PyTime_round_t round);
-
-/* Convert a timestamp to a number of seconds as a C double. */
-PyAPI_FUNC(double) _PyTime_AsSecondsDouble(_PyTime_t t);
-
-/* Convert timestamp to a number of milliseconds (10^-3 seconds). */
-PyAPI_FUNC(_PyTime_t) _PyTime_AsMilliseconds(_PyTime_t t,
-    _PyTime_round_t round);
-
-/* Convert timestamp to a number of microseconds (10^-6 seconds). */
-PyAPI_FUNC(_PyTime_t) _PyTime_AsMicroseconds(_PyTime_t t,
-    _PyTime_round_t round);
-
-/* Convert timestamp to a number of nanoseconds (10^-9 seconds). */
-PyAPI_FUNC(_PyTime_t) _PyTime_AsNanoseconds(_PyTime_t t);
-
-#ifdef MS_WINDOWS
-// Convert timestamp to a number of 100 nanoseconds (10^-7 seconds).
-PyAPI_FUNC(_PyTime_t) _PyTime_As100Nanoseconds(_PyTime_t t,
-    _PyTime_round_t round);
-#endif
-
-/* Convert timestamp to a number of nanoseconds (10^-9 seconds) as a Python int
-   object. */
-PyAPI_FUNC(PyObject *) _PyTime_AsNanosecondsObject(_PyTime_t t);
-
-#ifndef MS_WINDOWS
-/* Create a timestamp from a timeval structure.
-   Raise an exception and return -1 on overflow, return 0 on success. */
-PyAPI_FUNC(int) _PyTime_FromTimeval(_PyTime_t *tp, struct timeval *tv);
-#endif
-
-/* Convert a timestamp to a timeval structure (microsecond resolution).
-   tv_usec is always positive.
-   Raise an exception and return -1 if the conversion overflowed,
-   return 0 on success. */
-PyAPI_FUNC(int) _PyTime_AsTimeval(_PyTime_t t,
-    struct timeval *tv,
-    _PyTime_round_t round);
-
-/* Similar to _PyTime_AsTimeval() but don't raise an exception on overflow.
-   On overflow, clamp tv_sec to _PyTime_t min/max. */
-PyAPI_FUNC(void) _PyTime_AsTimeval_clamp(_PyTime_t t,
-    struct timeval *tv,
-    _PyTime_round_t round);
-
-/* Convert a timestamp to a number of seconds (secs) and microseconds (us).
-   us is always positive. This function is similar to _PyTime_AsTimeval()
-   except that secs is always a time_t type, whereas the timeval structure
-   uses a C long for tv_sec on Windows.
-   Raise an exception and return -1 if the conversion overflowed,
-   return 0 on success. */
-PyAPI_FUNC(int) _PyTime_AsTimevalTime_t(
-    _PyTime_t t,
-    time_t *secs,
-    int *us,
-    _PyTime_round_t round);
-
-#if defined(HAVE_CLOCK_GETTIME) || defined(HAVE_KQUEUE)
-/* Create a timestamp from a timespec structure.
-   Raise an exception and return -1 on overflow, return 0 on success. */
-PyAPI_FUNC(int) _PyTime_FromTimespec(_PyTime_t *tp, struct timespec *ts);
-
-/* Convert a timestamp to a timespec structure (nanosecond resolution).
-   tv_nsec is always positive.
-   Raise an exception and return -1 on error, return 0 on success. */
-PyAPI_FUNC(int) _PyTime_AsTimespec(_PyTime_t t, struct timespec *ts);
-
-/* Similar to _PyTime_AsTimespec() but don't raise an exception on overflow.
-   On overflow, clamp tv_sec to _PyTime_t min/max. */
-PyAPI_FUNC(void) _PyTime_AsTimespec_clamp(_PyTime_t t, struct timespec *ts);
-#endif
-
-
-// Compute t1 + t2. Clamp to [_PyTime_MIN; _PyTime_MAX] on overflow.
-PyAPI_FUNC(_PyTime_t) _PyTime_Add(_PyTime_t t1, _PyTime_t t2);
-
-/* Compute ticks * mul / div.
-   Clamp to [_PyTime_MIN; _PyTime_MAX] on overflow.
-   The caller must ensure that ((div - 1) * mul) cannot overflow. */
-PyAPI_FUNC(_PyTime_t) _PyTime_MulDiv(_PyTime_t ticks,
-    _PyTime_t mul,
-    _PyTime_t div);
-
-/* Structure used by time.get_clock_info() */
-typedef struct {
-    const char *implementation;
-    int monotonic;
-    int adjustable;
-    double resolution;
-} _Py_clock_info_t;
-
-/* Get the current time from the system clock.
-
-   If the internal clock fails, silently ignore the error and return 0.
-   On integer overflow, silently ignore the overflow and clamp the clock to
-   [_PyTime_MIN; _PyTime_MAX].
-
-   Use _PyTime_GetSystemClockWithInfo() to check for failure. */
-PyAPI_FUNC(_PyTime_t) _PyTime_GetSystemClock(void);
-
-/* Get the current time from the system clock.
- * On success, set *t and *info (if not NULL), and return 0.
- * On error, raise an exception and return -1.
- */
-PyAPI_FUNC(int) _PyTime_GetSystemClockWithInfo(
-    _PyTime_t *t,
-    _Py_clock_info_t *info);
-
-/* Get the time of a monotonic clock, i.e. a clock that cannot go backwards.
-   The clock is not affected by system clock updates. The reference point of
-   the returned value is undefined, so that only the difference between the
-   results of consecutive calls is valid.
-
-   If the internal clock fails, silently ignore the error and return 0.
-   On integer overflow, silently ignore the overflow and clamp the clock to
-   [_PyTime_MIN; _PyTime_MAX].
-
-   Use _PyTime_GetMonotonicClockWithInfo() to check for failure. */
-PyAPI_FUNC(_PyTime_t) _PyTime_GetMonotonicClock(void);
-
-/* Get the time of a monotonic clock, i.e. a clock that cannot go backwards.
-   The clock is not affected by system clock updates. The reference point of
-   the returned value is undefined, so that only the difference between the
-   results of consecutive calls is valid.
-
-   Fill info (if set) with information of the function used to get the time.
-
-   Return 0 on success, raise an exception and return -1 on error. */
-PyAPI_FUNC(int) _PyTime_GetMonotonicClockWithInfo(
-    _PyTime_t *t,
-    _Py_clock_info_t *info);
-
-
-/* Converts a timestamp to the Gregorian time, using the local time zone.
-   Return 0 on success, raise an exception and return -1 on error. */
-PyAPI_FUNC(int) _PyTime_localtime(time_t t, struct tm *tm);
-
-/* Converts a timestamp to the Gregorian time, assuming UTC.
-   Return 0 on success, raise an exception and return -1 on error. */
-PyAPI_FUNC(int) _PyTime_gmtime(time_t t, struct tm *tm);
-
-/* Get the performance counter: clock with the highest available resolution to
-   measure a short duration.
-
-   If the internal clock fails, silently ignore the error and return 0.
-   On integer overflow, silently ignore the overflow and clamp the clock to
-   [_PyTime_MIN; _PyTime_MAX].
-
-   Use _PyTime_GetPerfCounterWithInfo() to check for failure. */
-PyAPI_FUNC(_PyTime_t) _PyTime_GetPerfCounter(void);
-
-/* Get the performance counter: clock with the highest available resolution to
-   measure a short duration.
-
-   Fill info (if set) with information of the function used to get the time.
-
-   Return 0 on success, raise an exception and return -1 on error. */
-PyAPI_FUNC(int) _PyTime_GetPerfCounterWithInfo(
-    _PyTime_t *t,
-    _Py_clock_info_t *info);
-
-
-// Create a deadline.
-// Pseudo code: _PyTime_GetMonotonicClock() + timeout.
-PyAPI_FUNC(_PyTime_t) _PyDeadline_Init(_PyTime_t timeout);
-
-// Get remaining time from a deadline.
-// Pseudo code: deadline - _PyTime_GetMonotonicClock().
-PyAPI_FUNC(_PyTime_t) _PyDeadline_Get(_PyTime_t deadline);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* Py_PYTIME_H */
-#endif /* Py_LIMITED_API */
diff --git a/Include/cpython/setobject.h b/Include/cpython/setobject.h
index 20fd63eaae56e2..1778c778a05324 100644
--- a/Include/cpython/setobject.h
+++ b/Include/cpython/setobject.h
@@ -65,8 +65,3 @@ static inline Py_ssize_t PySet_GET_SIZE(PyObject *so) {
     return _PySet_CAST(so)->used;
 }
 #define PySet_GET_SIZE(so) PySet_GET_SIZE(_PyObject_CAST(so))
-
-PyAPI_DATA(PyObject *) _PySet_Dummy;
-
-PyAPI_FUNC(int) _PySet_NextEntry(PyObject *set, Py_ssize_t *pos, PyObject **key, Py_hash_t *hash);
-PyAPI_FUNC(int) _PySet_Update(PyObject *set, PyObject *iterable);
diff --git a/Include/cpython/sysmodule.h b/Include/cpython/sysmodule.h
index 19d9dddc344a4f..a3ac07f538a94f 100644
--- a/Include/cpython/sysmodule.h
+++ b/Include/cpython/sysmodule.h
@@ -2,15 +2,21 @@
 #  error "this header file must not be included directly"
 #endif
 
-PyAPI_FUNC(PyObject *) _PySys_GetAttr(PyThreadState *tstate,
-                                      PyObject *name);
-
-PyAPI_FUNC(size_t) _PySys_GetSizeOf(PyObject *);
-
 typedef int(*Py_AuditHookFunction)(const char *, PyObject *, void *);
 
-PyAPI_FUNC(int) PySys_Audit(
-    const char *event,
-    const char *argFormat,
-    ...);
 PyAPI_FUNC(int) PySys_AddAuditHook(Py_AuditHookFunction, void*);
+
+typedef struct {
+    FILE* perf_map;
+    PyThread_type_lock map_lock;
+} PerfMapState;
+
+PyAPI_FUNC(int) PyUnstable_PerfMapState_Init(void);
+PyAPI_FUNC(int) PyUnstable_WritePerfMapEntry(
+    const void *code_addr,
+    unsigned int code_size,
+    const char *entry_name);
+PyAPI_FUNC(void) PyUnstable_PerfMapState_Fini(void);
+PyAPI_FUNC(int) PyUnstable_CopyPerfMapFile(const char* parent_filename);
+PyAPI_FUNC(int) PyUnstable_PerfTrampoline_CompileCode(PyCodeObject *);
+PyAPI_FUNC(int) PyUnstable_PerfTrampoline_SetPersistAfterFork(int enable);
diff --git a/Include/cpython/traceback.h b/Include/cpython/traceback.h
index a4e087b2b4eced..81c51944f136f2 100644
--- a/Include/cpython/traceback.h
+++ b/Include/cpython/traceback.h
@@ -11,6 +11,3 @@ struct _traceback {
     int tb_lasti;
     int tb_lineno;
 };
-
-PyAPI_FUNC(int) _Py_DisplaySourceLine(PyObject *, PyObject *, int, int, int *, PyObject **);
-PyAPI_FUNC(void) _PyTraceback_Add(const char *, const char *, int);
diff --git a/Include/cpython/tracemalloc.h b/Include/cpython/tracemalloc.h
new file mode 100644
index 00000000000000..61a16ea9a9f3eb
--- /dev/null
+++ b/Include/cpython/tracemalloc.h
@@ -0,0 +1,26 @@
+#ifndef Py_LIMITED_API
+#ifndef Py_TRACEMALLOC_H
+#define Py_TRACEMALLOC_H
+
+/* Track an allocated memory block in the tracemalloc module.
+   Return 0 on success, return -1 on error (failed to allocate memory to store
+   the trace).
+
+   Return -2 if tracemalloc is disabled.
+
+   If memory block is already tracked, update the existing trace. */
+PyAPI_FUNC(int) PyTraceMalloc_Track(
+    unsigned int domain,
+    uintptr_t ptr,
+    size_t size);
+
+/* Untrack an allocated memory block in the tracemalloc module.
+   Do nothing if the block was not tracked.
+
+   Return -2 if tracemalloc is disabled, otherwise return 0. */
+PyAPI_FUNC(int) PyTraceMalloc_Untrack(
+    unsigned int domain,
+    uintptr_t ptr);
+
+#endif  // !Py_TRACEMALLOC_H
+#endif  // !Py_LIMITED_API
diff --git a/Include/cpython/tupleobject.h b/Include/cpython/tupleobject.h
index f6a1f076e03330..e530c8beda44ab 100644
--- a/Include/cpython/tupleobject.h
+++ b/Include/cpython/tupleobject.h
@@ -11,7 +11,6 @@ typedef struct {
 } PyTupleObject;
 
 PyAPI_FUNC(int) _PyTuple_Resize(PyObject **, Py_ssize_t);
-PyAPI_FUNC(void) _PyTuple_MaybeUntrack(PyObject *);
 
 /* Cast argument to PyTupleObject* type. */
 #define _PyTuple_CAST(op) \
@@ -31,9 +30,9 @@ static inline Py_ssize_t PyTuple_GET_SIZE(PyObject *op) {
 static inline void
 PyTuple_SET_ITEM(PyObject *op, Py_ssize_t index, PyObject *value) {
     PyTupleObject *tuple = _PyTuple_CAST(op);
+    assert(0 <= index);
+    assert(index < Py_SIZE(tuple));
     tuple->ob_item[index] = value;
 }
 #define PyTuple_SET_ITEM(op, index, value) \
     PyTuple_SET_ITEM(_PyObject_CAST(op), (index), _PyObject_CAST(value))
-
-PyAPI_FUNC(void) _PyTuple_DebugMallocStats(FILE *out);
diff --git a/Include/cpython/unicodeobject.h b/Include/cpython/unicodeobject.h
index 3394726dfffd72..d9b54bce83202d 100644
--- a/Include/cpython/unicodeobject.h
+++ b/Include/cpython/unicodeobject.h
@@ -6,8 +6,9 @@
    Python and represents a single Unicode element in the Unicode type.
    With PEP 393, Py_UNICODE is deprecated and replaced with a
    typedef to wchar_t. */
-#define PY_UNICODE_TYPE wchar_t
-/* Py_DEPRECATED(3.3) */ typedef wchar_t Py_UNICODE;
+Py_DEPRECATED(3.13) typedef wchar_t PY_UNICODE_TYPE;
+Py_DEPRECATED(3.13) typedef wchar_t Py_UNICODE;
+
 
 /* --- Internal Unicode Operations ---------------------------------------- */
 
@@ -43,6 +44,7 @@ static inline Py_UCS4 Py_UNICODE_LOW_SURROGATE(Py_UCS4 ch) {
     return (0xDC00 + (ch & 0x3FF));
 }
 
+
 /* --- Unicode Type ------------------------------------------------------- */
 
 /* ASCII-only strings created through PyUnicode_New use the PyASCIIObject
@@ -140,9 +142,11 @@ typedef struct {
            and the kind is PyUnicode_1BYTE_KIND. If ascii is set and compact is
            set, use the PyASCIIObject structure. */
         unsigned int ascii:1;
+        /* The object is statically allocated. */
+        unsigned int statically_allocated:1;
         /* Padding to ensure that PyUnicode_DATA() is always aligned to
            4 bytes (see issue #19537 on m68k). */
-        unsigned int :25;
+        unsigned int :24;
     } state;
 } PyASCIIObject;
 
@@ -167,10 +171,6 @@ typedef struct {
     } data;                     /* Canonical, smallest-form Unicode buffer */
 } PyUnicodeObject;
 
-PyAPI_FUNC(int) _PyUnicode_CheckConsistency(
-    PyObject *op,
-    int check_content);
-
 
 #define _PyASCIIObject_CAST(op) \
     (assert(PyUnicode_Check(op)), \
@@ -377,9 +377,8 @@ static inline Py_UCS4 PyUnicode_MAX_CHAR_VALUE(PyObject *op)
 #define PyUnicode_MAX_CHAR_VALUE(op) \
     PyUnicode_MAX_CHAR_VALUE(_PyObject_CAST(op))
 
-/* === Public API ========================================================= */
 
-/* --- Plain Py_UNICODE --------------------------------------------------- */
+/* === Public API ========================================================= */
 
 /* With PEP 393, this is the recommended way to allocate a new unicode object.
    This function will allocate the object and its buffer in a single memory
@@ -396,11 +395,6 @@ static inline int PyUnicode_READY(PyObject* Py_UNUSED(op))
 }
 #define PyUnicode_READY(op) PyUnicode_READY(_PyObject_CAST(op))
 
-/* Get a copy of a Unicode string. */
-PyAPI_FUNC(PyObject*) _PyUnicode_Copy(
-    PyObject *unicode
-    );
-
 /* Copy character from one unicode object into another, this function performs
    character conversion when necessary and falls back to memcpy() if possible.
 
@@ -427,17 +421,6 @@ PyAPI_FUNC(Py_ssize_t) PyUnicode_CopyCharacters(
     Py_ssize_t how_many
     );
 
-/* Unsafe version of PyUnicode_CopyCharacters(): don't check arguments and so
-   may crash if parameters are invalid (e.g. if the output string
-   is too short). */
-PyAPI_FUNC(void) _PyUnicode_FastCopyCharacters(
-    PyObject *to,
-    Py_ssize_t to_start,
-    PyObject *from,
-    Py_ssize_t from_start,
-    Py_ssize_t how_many
-    );
-
 /* Fill a string with a character: write fill_char into
    unicode[start:start+length].
 
@@ -453,15 +436,6 @@ PyAPI_FUNC(Py_ssize_t) PyUnicode_Fill(
     Py_UCS4 fill_char
     );
 
-/* Unsafe version of PyUnicode_Fill(): don't check arguments and so may crash
-   if parameters are invalid (e.g. if length is longer than the string). */
-PyAPI_FUNC(void) _PyUnicode_FastFill(
-    PyObject *unicode,
-    Py_ssize_t start,
-    Py_ssize_t length,
-    Py_UCS4 fill_char
-    );
-
 /* Create a new string from a buffer of Py_UCS1, Py_UCS2 or Py_UCS4 characters.
    Scan the string to find the maximum character. */
 PyAPI_FUNC(PyObject*) PyUnicode_FromKindAndData(
@@ -469,18 +443,6 @@ PyAPI_FUNC(PyObject*) PyUnicode_FromKindAndData(
     const void *buffer,
     Py_ssize_t size);
 
-/* Create a new string from a buffer of ASCII characters.
-   WARNING: Don't check if the string contains any non-ASCII character. */
-PyAPI_FUNC(PyObject*) _PyUnicode_FromASCII(
-    const char *buffer,
-    Py_ssize_t size);
-
-/* Compute the maximum character of the substring unicode[start:end].
-   Return 127 for an empty string. */
-PyAPI_FUNC(Py_UCS4) _PyUnicode_FindMaxChar (
-    PyObject *unicode,
-    Py_ssize_t start,
-    Py_ssize_t end);
 
 /* --- _PyUnicodeWriter API ----------------------------------------------- */
 
@@ -506,11 +468,11 @@ typedef struct {
     unsigned char readonly;
 } _PyUnicodeWriter ;
 
-/* Initialize a Unicode writer.
- *
- * By default, the minimum buffer size is 0 character and overallocation is
- * disabled. Set min_length, min_char and overallocate attributes to control
- * the allocation of the buffer. */
+// Initialize a Unicode writer.
+//
+// By default, the minimum buffer size is 0 character and overallocation is
+// disabled. Set min_length, min_char and overallocate attributes to control
+// the allocation of the buffer.
 PyAPI_FUNC(void)
 _PyUnicodeWriter_Init(_PyUnicodeWriter *writer);
 
@@ -598,15 +560,6 @@ PyAPI_FUNC(void)
 _PyUnicodeWriter_Dealloc(_PyUnicodeWriter *writer);
 
 
-/* Format the object based on the format_spec, as defined in PEP 3101
-   (Advanced String Formatting). */
-PyAPI_FUNC(int) _PyUnicode_FormatAdvancedWriter(
-    _PyUnicodeWriter *writer,
-    PyObject *obj,
-    PyObject *format_spec,
-    Py_ssize_t start,
-    Py_ssize_t end);
-
 /* --- Manage the default encoding ---------------------------------------- */
 
 /* Returns a pointer to the default encoding (UTF-8) of the
@@ -624,171 +577,9 @@ PyAPI_FUNC(int) _PyUnicode_FormatAdvancedWriter(
 
 PyAPI_FUNC(const char *) PyUnicode_AsUTF8(PyObject *unicode);
 
+// Alias kept for backward compatibility
 #define _PyUnicode_AsString PyUnicode_AsUTF8
 
-/* --- UTF-7 Codecs ------------------------------------------------------- */
-
-PyAPI_FUNC(PyObject*) _PyUnicode_EncodeUTF7(
-    PyObject *unicode,          /* Unicode object */
-    int base64SetO,             /* Encode RFC2152 Set O characters in base64 */
-    int base64WhiteSpace,       /* Encode whitespace (sp, ht, nl, cr) in base64 */
-    const char *errors          /* error handling */
-    );
-
-/* --- UTF-8 Codecs ------------------------------------------------------- */
-
-PyAPI_FUNC(PyObject*) _PyUnicode_AsUTF8String(
-    PyObject *unicode,
-    const char *errors);
-
-/* --- UTF-32 Codecs ------------------------------------------------------ */
-
-PyAPI_FUNC(PyObject*) _PyUnicode_EncodeUTF32(
-    PyObject *object,           /* Unicode object */
-    const char *errors,         /* error handling */
-    int byteorder               /* byteorder to use 0=BOM+native;-1=LE,1=BE */
-    );
-
-/* --- UTF-16 Codecs ------------------------------------------------------ */
-
-/* Returns a Python string object holding the UTF-16 encoded value of
-   the Unicode data.
-
-   If byteorder is not 0, output is written according to the following
-   byte order:
-
-   byteorder == -1: little endian
-   byteorder == 0:  native byte order (writes a BOM mark)
-   byteorder == 1:  big endian
-
-   If byteorder is 0, the output string will always start with the
-   Unicode BOM mark (U+FEFF). In the other two modes, no BOM mark is
-   prepended.
-*/
-PyAPI_FUNC(PyObject*) _PyUnicode_EncodeUTF16(
-    PyObject* unicode,          /* Unicode object */
-    const char *errors,         /* error handling */
-    int byteorder               /* byteorder to use 0=BOM+native;-1=LE,1=BE */
-    );
-
-/* --- Unicode-Escape Codecs ---------------------------------------------- */
-
-/* Variant of PyUnicode_DecodeUnicodeEscape that supports partial decoding. */
-PyAPI_FUNC(PyObject*) _PyUnicode_DecodeUnicodeEscapeStateful(
-        const char *string,     /* Unicode-Escape encoded string */
-        Py_ssize_t length,      /* size of string */
-        const char *errors,     /* error handling */
-        Py_ssize_t *consumed    /* bytes consumed */
-);
-/* Helper for PyUnicode_DecodeUnicodeEscape that detects invalid escape
-   chars. */
-PyAPI_FUNC(PyObject*) _PyUnicode_DecodeUnicodeEscapeInternal(
-        const char *string,     /* Unicode-Escape encoded string */
-        Py_ssize_t length,      /* size of string */
-        const char *errors,     /* error handling */
-        Py_ssize_t *consumed,   /* bytes consumed */
-        const char **first_invalid_escape  /* on return, points to first
-                                              invalid escaped char in
-                                              string. */
-);
-
-/* --- Raw-Unicode-Escape Codecs ---------------------------------------------- */
-
-/* Variant of PyUnicode_DecodeRawUnicodeEscape that supports partial decoding. */
-PyAPI_FUNC(PyObject*) _PyUnicode_DecodeRawUnicodeEscapeStateful(
-        const char *string,     /* Unicode-Escape encoded string */
-        Py_ssize_t length,      /* size of string */
-        const char *errors,     /* error handling */
-        Py_ssize_t *consumed    /* bytes consumed */
-);
-
-/* --- Latin-1 Codecs ----------------------------------------------------- */
-
-PyAPI_FUNC(PyObject*) _PyUnicode_AsLatin1String(
-    PyObject* unicode,
-    const char* errors);
-
-/* --- ASCII Codecs ------------------------------------------------------- */
-
-PyAPI_FUNC(PyObject*) _PyUnicode_AsASCIIString(
-    PyObject* unicode,
-    const char* errors);
-
-/* --- Character Map Codecs ----------------------------------------------- */
-
-/* Translate an Unicode object by applying a character mapping table to
-   it and return the resulting Unicode object.
-
-   The mapping table must map Unicode ordinal integers to Unicode strings,
-   Unicode ordinal integers or None (causing deletion of the character).
-
-   Mapping tables may be dictionaries or sequences. Unmapped character
-   ordinals (ones which cause a LookupError) are left untouched and
-   are copied as-is.
-*/
-PyAPI_FUNC(PyObject*) _PyUnicode_EncodeCharmap(
-    PyObject *unicode,          /* Unicode object */
-    PyObject *mapping,          /* encoding mapping */
-    const char *errors          /* error handling */
-    );
-
-/* --- Decimal Encoder ---------------------------------------------------- */
-
-/* Coverts a Unicode object holding a decimal value to an ASCII string
-   for using in int, float and complex parsers.
-   Transforms code points that have decimal digit property to the
-   corresponding ASCII digit code points.  Transforms spaces to ASCII.
-   Transforms code points starting from the first non-ASCII code point that
-   is neither a decimal digit nor a space to the end into '?'. */
-
-PyAPI_FUNC(PyObject*) _PyUnicode_TransformDecimalAndSpaceToASCII(
-    PyObject *unicode           /* Unicode object */
-    );
-
-/* --- Methods & Slots ---------------------------------------------------- */
-
-PyAPI_FUNC(PyObject *) _PyUnicode_JoinArray(
-    PyObject *separator,
-    PyObject *const *items,
-    Py_ssize_t seqlen
-    );
-
-/* Test whether a unicode is equal to ASCII identifier.  Return 1 if true,
-   0 otherwise.  The right argument must be ASCII identifier.
-   Any error occurs inside will be cleared before return. */
-PyAPI_FUNC(int) _PyUnicode_EqualToASCIIId(
-    PyObject *left,             /* Left string */
-    _Py_Identifier *right       /* Right identifier */
-    );
-
-/* Test whether a unicode is equal to ASCII string.  Return 1 if true,
-   0 otherwise.  The right argument must be ASCII-encoded string.
-   Any error occurs inside will be cleared before return. */
-PyAPI_FUNC(int) _PyUnicode_EqualToASCIIString(
-    PyObject *left,
-    const char *right           /* ASCII-encoded string */
-    );
-
-/* Externally visible for str.strip(unicode) */
-PyAPI_FUNC(PyObject *) _PyUnicode_XStrip(
-    PyObject *self,
-    int striptype,
-    PyObject *sepobj
-    );
-
-/* Using explicit passed-in values, insert the thousands grouping
-   into the string pointed to by buffer.  For the argument descriptions,
-   see Objects/stringlib/localeutil.h */
-PyAPI_FUNC(Py_ssize_t) _PyUnicode_InsertThousandsGrouping(
-    _PyUnicodeWriter *writer,
-    Py_ssize_t n_buffer,
-    PyObject *digits,
-    Py_ssize_t d_pos,
-    Py_ssize_t n_digits,
-    Py_ssize_t min_width,
-    const char *grouping,
-    PyObject *thousands_sep,
-    Py_UCS4 *maxchar);
 
 /* === Characters Type APIs =============================================== */
 
@@ -811,14 +602,6 @@ PyAPI_FUNC(int) _PyUnicode_IsTitlecase(
     Py_UCS4 ch       /* Unicode character */
     );
 
-PyAPI_FUNC(int) _PyUnicode_IsXidStart(
-    Py_UCS4 ch       /* Unicode character */
-    );
-
-PyAPI_FUNC(int) _PyUnicode_IsXidContinue(
-    Py_UCS4 ch       /* Unicode character */
-    );
-
 PyAPI_FUNC(int) _PyUnicode_IsWhitespace(
     const Py_UCS4 ch         /* Unicode character */
     );
@@ -827,46 +610,18 @@ PyAPI_FUNC(int) _PyUnicode_IsLinebreak(
     const Py_UCS4 ch         /* Unicode character */
     );
 
-/* Py_DEPRECATED(3.3) */ PyAPI_FUNC(Py_UCS4) _PyUnicode_ToLowercase(
+PyAPI_FUNC(Py_UCS4) _PyUnicode_ToLowercase(
     Py_UCS4 ch       /* Unicode character */
     );
 
-/* Py_DEPRECATED(3.3) */ PyAPI_FUNC(Py_UCS4) _PyUnicode_ToUppercase(
+PyAPI_FUNC(Py_UCS4) _PyUnicode_ToUppercase(
     Py_UCS4 ch       /* Unicode character */
     );
 
-Py_DEPRECATED(3.3) PyAPI_FUNC(Py_UCS4) _PyUnicode_ToTitlecase(
+PyAPI_FUNC(Py_UCS4) _PyUnicode_ToTitlecase(
     Py_UCS4 ch       /* Unicode character */
     );
 
-PyAPI_FUNC(int) _PyUnicode_ToLowerFull(
-    Py_UCS4 ch,       /* Unicode character */
-    Py_UCS4 *res
-    );
-
-PyAPI_FUNC(int) _PyUnicode_ToTitleFull(
-    Py_UCS4 ch,       /* Unicode character */
-    Py_UCS4 *res
-    );
-
-PyAPI_FUNC(int) _PyUnicode_ToUpperFull(
-    Py_UCS4 ch,       /* Unicode character */
-    Py_UCS4 *res
-    );
-
-PyAPI_FUNC(int) _PyUnicode_ToFoldedFull(
-    Py_UCS4 ch,       /* Unicode character */
-    Py_UCS4 *res
-    );
-
-PyAPI_FUNC(int) _PyUnicode_IsCaseIgnorable(
-    Py_UCS4 ch         /* Unicode character */
-    );
-
-PyAPI_FUNC(int) _PyUnicode_IsCased(
-    Py_UCS4 ch         /* Unicode character */
-    );
-
 PyAPI_FUNC(int) _PyUnicode_ToDecimalDigit(
     Py_UCS4 ch       /* Unicode character */
     );
@@ -943,19 +698,6 @@ static inline int Py_UNICODE_ISALNUM(Py_UCS4 ch) {
 
 /* === Misc functions ===================================================== */
 
-PyAPI_FUNC(PyObject*) _PyUnicode_FormatLong(PyObject *, int, int, int);
-
-/* Return an interned Unicode object for an Identifier; may fail if there is no memory.*/
+// Return an interned Unicode object for an Identifier; may fail if there is no
+// memory.
 PyAPI_FUNC(PyObject*) _PyUnicode_FromId(_Py_Identifier*);
-
-/* Fast equality check when the inputs are known to be exact unicode types
-   and where the hash values are equal (i.e. a very probable match) */
-PyAPI_FUNC(int) _PyUnicode_EQ(PyObject *, PyObject *);
-
-/* Equality check. */
-PyAPI_FUNC(int) _PyUnicode_Equal(PyObject *, PyObject *);
-
-PyAPI_FUNC(int) _PyUnicode_WideCharString_Converter(PyObject *, void *);
-PyAPI_FUNC(int) _PyUnicode_WideCharString_Opt_Converter(PyObject *, void *);
-
-PyAPI_FUNC(Py_ssize_t) _PyUnicode_ScanIdentifier(PyObject *);
diff --git a/Include/cpython/weakrefobject.h b/Include/cpython/weakrefobject.h
index fd79fdc2dcc468..1559e2def61260 100644
--- a/Include/cpython/weakrefobject.h
+++ b/Include/cpython/weakrefobject.h
@@ -32,11 +32,8 @@ struct _PyWeakReference {
     vectorcallfunc vectorcall;
 };
 
-PyAPI_FUNC(Py_ssize_t) _PyWeakref_GetWeakrefCount(PyWeakReference *head);
-
-PyAPI_FUNC(void) _PyWeakref_ClearRef(PyWeakReference *self);
-
-static inline PyObject* PyWeakref_GET_OBJECT(PyObject *ref_obj) {
+Py_DEPRECATED(3.13) static inline PyObject* PyWeakref_GET_OBJECT(PyObject *ref_obj)
+{
     PyWeakReference *ref;
     PyObject *obj;
     assert(PyWeakref_Check(ref_obj));
diff --git a/Include/dictobject.h b/Include/dictobject.h
index e7fcb44d0cf9a9..1bbeec1ab699e7 100644
--- a/Include/dictobject.h
+++ b/Include/dictobject.h
@@ -57,6 +57,17 @@ PyAPI_FUNC(int) PyDict_MergeFromSeq2(PyObject *d,
 PyAPI_FUNC(PyObject *) PyDict_GetItemString(PyObject *dp, const char *key);
 PyAPI_FUNC(int) PyDict_SetItemString(PyObject *dp, const char *key, PyObject *item);
 PyAPI_FUNC(int) PyDict_DelItemString(PyObject *dp, const char *key);
+
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030D0000
+// Return the object from dictionary *op* which has a key *key*.
+// - If the key is present, set *result to a new strong reference to the value
+//   and return 1.
+// - If the key is missing, set *result to NULL and return 0 .
+// - On error, raise an exception and return -1.
+PyAPI_FUNC(int) PyDict_GetItemRef(PyObject *mp, PyObject *key, PyObject **result);
+PyAPI_FUNC(int) PyDict_GetItemStringRef(PyObject *mp, const char *key, PyObject **result);
+#endif
+
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030A0000
 PyAPI_FUNC(PyObject *) PyObject_GenericGetDict(PyObject *, void *);
 #endif
diff --git a/Include/errcode.h b/Include/errcode.h
index 54ae929bf25870..dac5cf068c99d6 100644
--- a/Include/errcode.h
+++ b/Include/errcode.h
@@ -1,36 +1,43 @@
+// Error codes passed around between file input, tokenizer, parser and
+// interpreter.  This is necessary so we can turn them into Python
+// exceptions at a higher level.  Note that some errors have a
+// slightly different meaning when passed from the tokenizer to the
+// parser than when passed from the parser to the interpreter; e.g.
+// the parser only returns E_EOF when it hits EOF immediately, and it
+// never returns E_OK.
+//
+// The public PyRun_InteractiveOneObjectEx() function can return E_EOF,
+// same as its variants:
+//
+// * PyRun_InteractiveOneObject()
+// * PyRun_InteractiveOneFlags()
+// * PyRun_InteractiveOne()
+
 #ifndef Py_ERRCODE_H
 #define Py_ERRCODE_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-
-/* Error codes passed around between file input, tokenizer, parser and
-   interpreter.  This is necessary so we can turn them into Python
-   exceptions at a higher level.  Note that some errors have a
-   slightly different meaning when passed from the tokenizer to the
-   parser than when passed from the parser to the interpreter; e.g.
-   the parser only returns E_EOF when it hits EOF immediately, and it
-   never returns E_OK. */
-
-#define E_OK            10      /* No error */
-#define E_EOF           11      /* End Of File */
-#define E_INTR          12      /* Interrupted */
-#define E_TOKEN         13      /* Bad token */
-#define E_SYNTAX        14      /* Syntax error */
-#define E_NOMEM         15      /* Ran out of memory */
-#define E_DONE          16      /* Parsing complete */
-#define E_ERROR         17      /* Execution error */
-#define E_TABSPACE      18      /* Inconsistent mixing of tabs and spaces */
-#define E_OVERFLOW      19      /* Node had too many children */
-#define E_TOODEEP       20      /* Too many indentation levels */
-#define E_DEDENT        21      /* No matching outer block for dedent */
-#define E_DECODE        22      /* Error in decoding into Unicode */
-#define E_EOFS          23      /* EOF in triple-quoted string */
-#define E_EOLS          24      /* EOL in single-quoted string */
-#define E_LINECONT      25      /* Unexpected characters after a line continuation */
-#define E_BADSINGLE     27      /* Ill-formed single statement input */
-#define E_INTERACT_STOP 28      /* Interactive mode stopped tokenization */
+#define E_OK             10      /* No error */
+#define E_EOF            11      /* End Of File */
+#define E_INTR           12      /* Interrupted */
+#define E_TOKEN          13      /* Bad token */
+#define E_SYNTAX         14      /* Syntax error */
+#define E_NOMEM          15      /* Ran out of memory */
+#define E_DONE           16      /* Parsing complete */
+#define E_ERROR          17      /* Execution error */
+#define E_TABSPACE       18      /* Inconsistent mixing of tabs and spaces */
+#define E_OVERFLOW       19      /* Node had too many children */
+#define E_TOODEEP        20      /* Too many indentation levels */
+#define E_DEDENT         21      /* No matching outer block for dedent */
+#define E_DECODE         22      /* Error in decoding into Unicode */
+#define E_EOFS           23      /* EOF in triple-quoted string */
+#define E_EOLS           24      /* EOL in single-quoted string */
+#define E_LINECONT       25      /* Unexpected characters after a line continuation */
+#define E_BADSINGLE      27      /* Ill-formed single statement input */
+#define E_INTERACT_STOP  28      /* Interactive mode stopped tokenization */
+#define E_COLUMNOVERFLOW 29      /* Column offset overflow */
 
 #ifdef __cplusplus
 }
diff --git a/Include/exports.h b/Include/exports.h
index 59373c39ff757c..ce601216f17156 100644
--- a/Include/exports.h
+++ b/Include/exports.h
@@ -1,6 +1,29 @@
 #ifndef Py_EXPORTS_H
 #define Py_EXPORTS_H
 
+/* Declarations for symbol visibility.
+
+  PyAPI_FUNC(type): Declares a public Python API function and return type
+  PyAPI_DATA(type): Declares public Python data and its type
+  PyMODINIT_FUNC:   A Python module init function.  If these functions are
+                    inside the Python core, they are private to the core.
+                    If in an extension module, it may be declared with
+                    external linkage depending on the platform.
+
+  As a number of platforms support/require "__declspec(dllimport/dllexport)",
+  we support a HAVE_DECLSPEC_DLL macro to save duplication.
+*/
+
+/*
+  All windows ports, except cygwin, are handled in PC/pyconfig.h.
+
+  Cygwin is the only other autoconf platform requiring special
+  linkage handling and it uses __declspec().
+*/
+#if defined(__CYGWIN__)
+#       define HAVE_DECLSPEC_DLL
+#endif
+
 #if defined(_WIN32) || defined(__CYGWIN__)
     #if defined(Py_ENABLE_SHARED)
         #define Py_IMPORTED_SYMBOL __declspec(dllimport)
@@ -33,4 +56,53 @@
     #endif
 #endif
 
+/* only get special linkage if built as shared or platform is Cygwin */
+#if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
+#       if defined(HAVE_DECLSPEC_DLL)
+#               if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#                       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
+#                       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
+        /* module init functions inside the core need no external linkage */
+        /* except for Cygwin to handle embedding */
+#                       if defined(__CYGWIN__)
+#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
+#                       else /* __CYGWIN__ */
+#                               define PyMODINIT_FUNC PyObject*
+#                       endif /* __CYGWIN__ */
+#               else /* Py_BUILD_CORE */
+        /* Building an extension module, or an embedded situation */
+        /* public Python functions and data are imported */
+        /* Under Cygwin, auto-import functions to prevent compilation */
+        /* failures similar to those described at the bottom of 4.1: */
+        /* http://docs.python.org/extending/windows.html#a-cookbook-approach */
+#                       if !defined(__CYGWIN__)
+#                               define PyAPI_FUNC(RTYPE) Py_IMPORTED_SYMBOL RTYPE
+#                       endif /* !__CYGWIN__ */
+#                       define PyAPI_DATA(RTYPE) extern Py_IMPORTED_SYMBOL RTYPE
+        /* module init functions outside the core must be exported */
+#                       if defined(__cplusplus)
+#                               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
+#                       else /* __cplusplus */
+#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
+#                       endif /* __cplusplus */
+#               endif /* Py_BUILD_CORE */
+#       endif /* HAVE_DECLSPEC_DLL */
+#endif /* Py_ENABLE_SHARED */
+
+/* If no external linkage macros defined by now, create defaults */
+#ifndef PyAPI_FUNC
+#       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
+#endif
+#ifndef PyAPI_DATA
+#       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
+#endif
+#ifndef PyMODINIT_FUNC
+#       if defined(__cplusplus)
+#               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
+#       else /* __cplusplus */
+#               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
+#       endif /* __cplusplus */
+#endif
+
+
 #endif /* Py_EXPORTS_H */
diff --git a/Include/fileobject.h b/Include/fileobject.h
index 02bd7c915a23f7..6a6d11409497fa 100644
--- a/Include/fileobject.h
+++ b/Include/fileobject.h
@@ -23,20 +23,12 @@ Py_DEPRECATED(3.12) PyAPI_DATA(const char *) Py_FileSystemDefaultEncoding;
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03060000
 Py_DEPRECATED(3.12) PyAPI_DATA(const char *) Py_FileSystemDefaultEncodeErrors;
 #endif
-PyAPI_DATA(int) Py_HasFileSystemDefaultEncoding;
+Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_HasFileSystemDefaultEncoding;
 
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03070000
 Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_UTF8Mode;
 #endif
 
-/* A routine to check if a file descriptor can be select()-ed. */
-#ifdef _MSC_VER
-    /* On Windows, any socket fd can be select()-ed, no matter how high */
-    #define _PyIsSelectable_fd(FD) (1)
-#else
-    #define _PyIsSelectable_fd(FD) ((unsigned int)(FD) < (unsigned int)FD_SETSIZE)
-#endif
-
 #ifndef Py_LIMITED_API
 #  define Py_CPYTHON_FILEOBJECT_H
 #  include "cpython/fileobject.h"
diff --git a/Include/fileutils.h b/Include/fileutils.h
index ba5acc84fcb185..1509198e45f0ca 100644
--- a/Include/fileutils.h
+++ b/Include/fileutils.h
@@ -1,5 +1,41 @@
 #ifndef Py_FILEUTILS_H
 #define Py_FILEUTILS_H
+
+/*******************************
+ * stat() and fstat() fiddling *
+ *******************************/
+
+#ifdef HAVE_SYS_STAT_H
+#  include <sys/stat.h>           // S_ISREG()
+#elif defined(HAVE_STAT_H)
+#  include <stat.h>               // S_ISREG()
+#endif
+
+#ifndef S_IFMT
+   // VisualAge C/C++ Failed to Define MountType Field in sys/stat.h.
+#  define S_IFMT 0170000
+#endif
+#ifndef S_IFLNK
+   // Windows doesn't define S_IFLNK, but posixmodule.c maps
+   // IO_REPARSE_TAG_SYMLINK to S_IFLNK.
+#  define S_IFLNK 0120000
+#endif
+#ifndef S_ISREG
+#  define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_ISDIR
+#  define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
+#endif
+#ifndef S_ISCHR
+#  define S_ISCHR(x) (((x) & S_IFMT) == S_IFCHR)
+#endif
+#ifndef S_ISLNK
+#  define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
+#endif
+
+
+// Move this down here since some C++ #include's don't like to be included
+// inside an extern "C".
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/Include/import.h b/Include/import.h
index 5d5f3425b8e715..24b23b9119196f 100644
--- a/Include/import.h
+++ b/Include/import.h
@@ -43,10 +43,15 @@ PyAPI_FUNC(PyObject *) PyImport_AddModuleObject(
 PyAPI_FUNC(PyObject *) PyImport_AddModule(
     const char *name            /* UTF-8 encoded string */
     );
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+PyAPI_FUNC(PyObject *) PyImport_AddModuleRef(
+    const char *name            /* UTF-8 encoded string */
+    );
+#endif
 PyAPI_FUNC(PyObject *) PyImport_ImportModule(
     const char *name            /* UTF-8 encoded string */
     );
-PyAPI_FUNC(PyObject *) PyImport_ImportModuleNoBlock(
+Py_DEPRECATED(3.13) PyAPI_FUNC(PyObject *) PyImport_ImportModuleNoBlock(
     const char *name            /* UTF-8 encoded string */
     );
 PyAPI_FUNC(PyObject *) PyImport_ImportModuleLevel(
diff --git a/Include/internal/mimalloc/mimalloc.h b/Include/internal/mimalloc/mimalloc.h
new file mode 100644
index 00000000000000..821129e7690b1b
--- /dev/null
+++ b/Include/internal/mimalloc/mimalloc.h
@@ -0,0 +1,565 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#pragma once
+#ifndef MIMALLOC_H
+#define MIMALLOC_H
+
+#define MI_MALLOC_VERSION 212   // major + 2 digits minor
+
+// ------------------------------------------------------
+// Compiler specific attributes
+// ------------------------------------------------------
+
+#ifdef __cplusplus
+  #if (__cplusplus >= 201103L) || (_MSC_VER > 1900)  // C++11
+    #define mi_attr_noexcept   noexcept
+  #else
+    #define mi_attr_noexcept   throw()
+  #endif
+#else
+  #define mi_attr_noexcept
+#endif
+
+#if defined(__cplusplus) && (__cplusplus >= 201703)
+  #define mi_decl_nodiscard    [[nodiscard]]
+#elif (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__)  // includes clang, icc, and clang-cl
+  #define mi_decl_nodiscard    __attribute__((warn_unused_result))
+#elif defined(_HAS_NODISCARD)
+  #define mi_decl_nodiscard    _NODISCARD
+#elif (_MSC_VER >= 1700)
+  #define mi_decl_nodiscard    _Check_return_
+#else
+  #define mi_decl_nodiscard
+#endif
+
+#if defined(_MSC_VER) || defined(__MINGW32__)
+  #if !defined(MI_SHARED_LIB)
+    #define mi_decl_export
+  #elif defined(MI_SHARED_LIB_EXPORT)
+    #define mi_decl_export              __declspec(dllexport)
+  #else
+    #define mi_decl_export              __declspec(dllimport)
+  #endif
+  #if defined(__MINGW32__)
+    #define mi_decl_restrict
+    #define mi_attr_malloc              __attribute__((malloc))
+  #else
+    #if (_MSC_VER >= 1900) && !defined(__EDG__)
+      #define mi_decl_restrict          __declspec(allocator) __declspec(restrict)
+    #else
+      #define mi_decl_restrict          __declspec(restrict)
+    #endif
+    #define mi_attr_malloc
+  #endif
+  #define mi_cdecl                      __cdecl
+  #define mi_attr_alloc_size(s)
+  #define mi_attr_alloc_size2(s1,s2)
+  #define mi_attr_alloc_align(p)
+#elif defined(__GNUC__)                 // includes clang and icc
+  #if defined(MI_SHARED_LIB) && defined(MI_SHARED_LIB_EXPORT)
+    #define mi_decl_export              __attribute__((visibility("default")))
+  #else
+    #define mi_decl_export
+  #endif
+  #define mi_cdecl                      // leads to warnings... __attribute__((cdecl))
+  #define mi_decl_restrict
+  #define mi_attr_malloc                __attribute__((malloc))
+  #if (defined(__clang_major__) && (__clang_major__ < 4)) || (__GNUC__ < 5)
+    #define mi_attr_alloc_size(s)
+    #define mi_attr_alloc_size2(s1,s2)
+    #define mi_attr_alloc_align(p)
+  #elif defined(__INTEL_COMPILER)
+    #define mi_attr_alloc_size(s)       __attribute__((alloc_size(s)))
+    #define mi_attr_alloc_size2(s1,s2)  __attribute__((alloc_size(s1,s2)))
+    #define mi_attr_alloc_align(p)
+  #else
+    #define mi_attr_alloc_size(s)       __attribute__((alloc_size(s)))
+    #define mi_attr_alloc_size2(s1,s2)  __attribute__((alloc_size(s1,s2)))
+    #define mi_attr_alloc_align(p)      __attribute__((alloc_align(p)))
+  #endif
+#else
+  #define mi_cdecl
+  #define mi_decl_export
+  #define mi_decl_restrict
+  #define mi_attr_malloc
+  #define mi_attr_alloc_size(s)
+  #define mi_attr_alloc_size2(s1,s2)
+  #define mi_attr_alloc_align(p)
+#endif
+
+// ------------------------------------------------------
+// Includes
+// ------------------------------------------------------
+
+#include <stddef.h>     // size_t
+#include <stdbool.h>    // bool
+#include <stdint.h>     // INTPTR_MAX
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// ------------------------------------------------------
+// Standard malloc interface
+// ------------------------------------------------------
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc(size_t size)  mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_calloc(size_t count, size_t size)  mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(1,2);
+mi_decl_nodiscard mi_decl_export void* mi_realloc(void* p, size_t newsize)      mi_attr_noexcept mi_attr_alloc_size(2);
+mi_decl_export void* mi_expand(void* p, size_t newsize)                         mi_attr_noexcept mi_attr_alloc_size(2);
+
+mi_decl_export void mi_free(void* p) mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict char* mi_strdup(const char* s) mi_attr_noexcept mi_attr_malloc;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict char* mi_strndup(const char* s, size_t n) mi_attr_noexcept mi_attr_malloc;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict char* mi_realpath(const char* fname, char* resolved_name) mi_attr_noexcept mi_attr_malloc;
+
+// ------------------------------------------------------
+// Extended functionality
+// ------------------------------------------------------
+#define MI_SMALL_WSIZE_MAX  (128)
+#define MI_SMALL_SIZE_MAX   (MI_SMALL_WSIZE_MAX*sizeof(void*))
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_small(size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_zalloc_small(size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_zalloc(size_t size)       mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_mallocn(size_t count, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(1,2);
+mi_decl_nodiscard mi_decl_export void* mi_reallocn(void* p, size_t count, size_t size)        mi_attr_noexcept mi_attr_alloc_size2(2,3);
+mi_decl_nodiscard mi_decl_export void* mi_reallocf(void* p, size_t newsize)                   mi_attr_noexcept mi_attr_alloc_size(2);
+
+mi_decl_nodiscard mi_decl_export size_t mi_usable_size(const void* p) mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export size_t mi_good_size(size_t size)     mi_attr_noexcept;
+
+
+// ------------------------------------------------------
+// Internals
+// ------------------------------------------------------
+
+typedef void (mi_cdecl mi_deferred_free_fun)(bool force, unsigned long long heartbeat, void* arg);
+mi_decl_export void mi_register_deferred_free(mi_deferred_free_fun* deferred_free, void* arg) mi_attr_noexcept;
+
+typedef void (mi_cdecl mi_output_fun)(const char* msg, void* arg);
+mi_decl_export void mi_register_output(mi_output_fun* out, void* arg) mi_attr_noexcept;
+
+typedef void (mi_cdecl mi_error_fun)(int err, void* arg);
+mi_decl_export void mi_register_error(mi_error_fun* fun, void* arg);
+
+mi_decl_export void mi_collect(bool force)    mi_attr_noexcept;
+mi_decl_export int  mi_version(void)          mi_attr_noexcept;
+mi_decl_export void mi_stats_reset(void)      mi_attr_noexcept;
+mi_decl_export void mi_stats_merge(void)      mi_attr_noexcept;
+mi_decl_export void mi_stats_print(void* out) mi_attr_noexcept;  // backward compatibility: `out` is ignored and should be NULL
+mi_decl_export void mi_stats_print_out(mi_output_fun* out, void* arg) mi_attr_noexcept;
+
+mi_decl_export void mi_process_init(void)     mi_attr_noexcept;
+mi_decl_export void mi_thread_init(void)      mi_attr_noexcept;
+mi_decl_export void mi_thread_done(void)      mi_attr_noexcept;
+mi_decl_export void mi_thread_stats_print_out(mi_output_fun* out, void* arg) mi_attr_noexcept;
+
+mi_decl_export void mi_process_info(size_t* elapsed_msecs, size_t* user_msecs, size_t* system_msecs,
+                                    size_t* current_rss, size_t* peak_rss,
+                                    size_t* current_commit, size_t* peak_commit, size_t* page_faults) mi_attr_noexcept;
+
+// -------------------------------------------------------------------------------------
+// Aligned allocation
+// Note that `alignment` always follows `size` for consistency with unaligned
+// allocation, but unfortunately this differs from `posix_memalign` and `aligned_alloc`.
+// -------------------------------------------------------------------------------------
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_aligned(size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1) mi_attr_alloc_align(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_malloc_aligned_at(size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_zalloc_aligned(size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1) mi_attr_alloc_align(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_zalloc_aligned_at(size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_calloc_aligned(size_t count, size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(1,2) mi_attr_alloc_align(3);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_calloc_aligned_at(size_t count, size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(1,2);
+mi_decl_nodiscard mi_decl_export void* mi_realloc_aligned(void* p, size_t newsize, size_t alignment) mi_attr_noexcept mi_attr_alloc_size(2) mi_attr_alloc_align(3);
+mi_decl_nodiscard mi_decl_export void* mi_realloc_aligned_at(void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_alloc_size(2);
+
+
+// -------------------------------------------------------------------------------------
+// Heaps: first-class, but can only allocate from the same thread that created it.
+// -------------------------------------------------------------------------------------
+
+struct mi_heap_s;
+typedef struct mi_heap_s mi_heap_t;
+
+mi_decl_nodiscard mi_decl_export mi_heap_t* mi_heap_new(void);
+mi_decl_export void       mi_heap_delete(mi_heap_t* heap);
+mi_decl_export void       mi_heap_destroy(mi_heap_t* heap);
+mi_decl_export mi_heap_t* mi_heap_set_default(mi_heap_t* heap);
+mi_decl_export mi_heap_t* mi_heap_get_default(void);
+mi_decl_export mi_heap_t* mi_heap_get_backing(void);
+mi_decl_export void       mi_heap_collect(mi_heap_t* heap, bool force) mi_attr_noexcept;
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_malloc(mi_heap_t* heap, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_zalloc(mi_heap_t* heap, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_calloc(mi_heap_t* heap, size_t count, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(2, 3);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_mallocn(mi_heap_t* heap, size_t count, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(2, 3);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_malloc_small(mi_heap_t* heap, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2);
+
+mi_decl_nodiscard mi_decl_export void* mi_heap_realloc(mi_heap_t* heap, void* p, size_t newsize)              mi_attr_noexcept mi_attr_alloc_size(3);
+mi_decl_nodiscard mi_decl_export void* mi_heap_reallocn(mi_heap_t* heap, void* p, size_t count, size_t size)  mi_attr_noexcept mi_attr_alloc_size2(3,4);
+mi_decl_nodiscard mi_decl_export void* mi_heap_reallocf(mi_heap_t* heap, void* p, size_t newsize)             mi_attr_noexcept mi_attr_alloc_size(3);
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict char* mi_heap_strdup(mi_heap_t* heap, const char* s)            mi_attr_noexcept mi_attr_malloc;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict char* mi_heap_strndup(mi_heap_t* heap, const char* s, size_t n) mi_attr_noexcept mi_attr_malloc;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict char* mi_heap_realpath(mi_heap_t* heap, const char* fname, char* resolved_name) mi_attr_noexcept mi_attr_malloc;
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_malloc_aligned(mi_heap_t* heap, size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2) mi_attr_alloc_align(3);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_malloc_aligned_at(mi_heap_t* heap, size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_zalloc_aligned(mi_heap_t* heap, size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2) mi_attr_alloc_align(3);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_zalloc_aligned_at(mi_heap_t* heap, size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_calloc_aligned(mi_heap_t* heap, size_t count, size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(2, 3) mi_attr_alloc_align(4);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_calloc_aligned_at(mi_heap_t* heap, size_t count, size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size2(2, 3);
+mi_decl_nodiscard mi_decl_export void* mi_heap_realloc_aligned(mi_heap_t* heap, void* p, size_t newsize, size_t alignment) mi_attr_noexcept mi_attr_alloc_size(3) mi_attr_alloc_align(4);
+mi_decl_nodiscard mi_decl_export void* mi_heap_realloc_aligned_at(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_alloc_size(3);
+
+
+// --------------------------------------------------------------------------------
+// Zero initialized re-allocation.
+// Only valid on memory that was originally allocated with zero initialization too.
+// e.g. `mi_calloc`, `mi_zalloc`, `mi_zalloc_aligned` etc.
+// see <https://github.com/microsoft/mimalloc/issues/63#issuecomment-508272992>
+// --------------------------------------------------------------------------------
+
+mi_decl_nodiscard mi_decl_export void* mi_rezalloc(void* p, size_t newsize)                mi_attr_noexcept mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export void* mi_recalloc(void* p, size_t newcount, size_t size)  mi_attr_noexcept mi_attr_alloc_size2(2,3);
+
+mi_decl_nodiscard mi_decl_export void* mi_rezalloc_aligned(void* p, size_t newsize, size_t alignment) mi_attr_noexcept mi_attr_alloc_size(2) mi_attr_alloc_align(3);
+mi_decl_nodiscard mi_decl_export void* mi_rezalloc_aligned_at(void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export void* mi_recalloc_aligned(void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept mi_attr_alloc_size2(2,3) mi_attr_alloc_align(4);
+mi_decl_nodiscard mi_decl_export void* mi_recalloc_aligned_at(void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_alloc_size2(2,3);
+
+mi_decl_nodiscard mi_decl_export void* mi_heap_rezalloc(mi_heap_t* heap, void* p, size_t newsize)                mi_attr_noexcept mi_attr_alloc_size(3);
+mi_decl_nodiscard mi_decl_export void* mi_heap_recalloc(mi_heap_t* heap, void* p, size_t newcount, size_t size)  mi_attr_noexcept mi_attr_alloc_size2(3,4);
+
+mi_decl_nodiscard mi_decl_export void* mi_heap_rezalloc_aligned(mi_heap_t* heap, void* p, size_t newsize, size_t alignment) mi_attr_noexcept mi_attr_alloc_size(3) mi_attr_alloc_align(4);
+mi_decl_nodiscard mi_decl_export void* mi_heap_rezalloc_aligned_at(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_alloc_size(3);
+mi_decl_nodiscard mi_decl_export void* mi_heap_recalloc_aligned(mi_heap_t* heap, void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept mi_attr_alloc_size2(3,4) mi_attr_alloc_align(5);
+mi_decl_nodiscard mi_decl_export void* mi_heap_recalloc_aligned_at(mi_heap_t* heap, void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept mi_attr_alloc_size2(3,4);
+
+
+// ------------------------------------------------------
+// Analysis
+// ------------------------------------------------------
+
+mi_decl_export bool mi_heap_contains_block(mi_heap_t* heap, const void* p);
+mi_decl_export bool mi_heap_check_owned(mi_heap_t* heap, const void* p);
+mi_decl_export bool mi_check_owned(const void* p);
+
+// An area of heap space contains blocks of a single size.
+typedef struct mi_heap_area_s {
+  void*  blocks;      // start of the area containing heap blocks
+  size_t reserved;    // bytes reserved for this area (virtual)
+  size_t committed;   // current available bytes for this area
+  size_t used;        // number of allocated blocks
+  size_t block_size;  // size in bytes of each block
+  size_t full_block_size; // size in bytes of a full block including padding and metadata.
+} mi_heap_area_t;
+
+typedef bool (mi_cdecl mi_block_visit_fun)(const mi_heap_t* heap, const mi_heap_area_t* area, void* block, size_t block_size, void* arg);
+
+mi_decl_export bool mi_heap_visit_blocks(const mi_heap_t* heap, bool visit_all_blocks, mi_block_visit_fun* visitor, void* arg);
+
+// Experimental
+mi_decl_nodiscard mi_decl_export bool mi_is_in_heap_region(const void* p) mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export bool mi_is_redirected(void) mi_attr_noexcept;
+
+mi_decl_export int mi_reserve_huge_os_pages_interleave(size_t pages, size_t numa_nodes, size_t timeout_msecs) mi_attr_noexcept;
+mi_decl_export int mi_reserve_huge_os_pages_at(size_t pages, int numa_node, size_t timeout_msecs) mi_attr_noexcept;
+
+mi_decl_export int  mi_reserve_os_memory(size_t size, bool commit, bool allow_large) mi_attr_noexcept;
+mi_decl_export bool mi_manage_os_memory(void* start, size_t size, bool is_committed, bool is_large, bool is_zero, int numa_node) mi_attr_noexcept;
+
+mi_decl_export void mi_debug_show_arenas(void) mi_attr_noexcept;
+
+// Experimental: heaps associated with specific memory arena's
+typedef int mi_arena_id_t;
+mi_decl_export void* mi_arena_area(mi_arena_id_t arena_id, size_t* size);
+mi_decl_export int   mi_reserve_huge_os_pages_at_ex(size_t pages, int numa_node, size_t timeout_msecs, bool exclusive, mi_arena_id_t* arena_id) mi_attr_noexcept;
+mi_decl_export int   mi_reserve_os_memory_ex(size_t size, bool commit, bool allow_large, bool exclusive, mi_arena_id_t* arena_id) mi_attr_noexcept;
+mi_decl_export bool  mi_manage_os_memory_ex(void* start, size_t size, bool is_committed, bool is_large, bool is_zero, int numa_node, bool exclusive, mi_arena_id_t* arena_id) mi_attr_noexcept;
+
+#if MI_MALLOC_VERSION >= 182
+// Create a heap that only allocates in the specified arena
+mi_decl_nodiscard mi_decl_export mi_heap_t* mi_heap_new_in_arena(mi_arena_id_t arena_id);
+#endif
+
+// deprecated
+mi_decl_export int  mi_reserve_huge_os_pages(size_t pages, double max_secs, size_t* pages_reserved) mi_attr_noexcept;
+
+
+// ------------------------------------------------------
+// Convenience
+// ------------------------------------------------------
+
+#define mi_malloc_tp(tp)                ((tp*)mi_malloc(sizeof(tp)))
+#define mi_zalloc_tp(tp)                ((tp*)mi_zalloc(sizeof(tp)))
+#define mi_calloc_tp(tp,n)              ((tp*)mi_calloc(n,sizeof(tp)))
+#define mi_mallocn_tp(tp,n)             ((tp*)mi_mallocn(n,sizeof(tp)))
+#define mi_reallocn_tp(p,tp,n)          ((tp*)mi_reallocn(p,n,sizeof(tp)))
+#define mi_recalloc_tp(p,tp,n)          ((tp*)mi_recalloc(p,n,sizeof(tp)))
+
+#define mi_heap_malloc_tp(hp,tp)        ((tp*)mi_heap_malloc(hp,sizeof(tp)))
+#define mi_heap_zalloc_tp(hp,tp)        ((tp*)mi_heap_zalloc(hp,sizeof(tp)))
+#define mi_heap_calloc_tp(hp,tp,n)      ((tp*)mi_heap_calloc(hp,n,sizeof(tp)))
+#define mi_heap_mallocn_tp(hp,tp,n)     ((tp*)mi_heap_mallocn(hp,n,sizeof(tp)))
+#define mi_heap_reallocn_tp(hp,p,tp,n)  ((tp*)mi_heap_reallocn(hp,p,n,sizeof(tp)))
+#define mi_heap_recalloc_tp(hp,p,tp,n)  ((tp*)mi_heap_recalloc(hp,p,n,sizeof(tp)))
+
+
+// ------------------------------------------------------
+// Options
+// ------------------------------------------------------
+
+typedef enum mi_option_e {
+  // stable options
+  mi_option_show_errors,              // print error messages
+  mi_option_show_stats,               // print statistics on termination
+  mi_option_verbose,                  // print verbose messages
+  // the following options are experimental (see src/options.h)
+  mi_option_eager_commit,             // eager commit segments? (after `eager_commit_delay` segments) (=1)
+  mi_option_arena_eager_commit,       // eager commit arenas? Use 2 to enable just on overcommit systems (=2)
+  mi_option_purge_decommits,          // should a memory purge decommit (or only reset) (=1)
+  mi_option_allow_large_os_pages,     // allow large (2MiB) OS pages, implies eager commit
+  mi_option_reserve_huge_os_pages,    // reserve N huge OS pages (1GiB/page) at startup
+  mi_option_reserve_huge_os_pages_at, // reserve huge OS pages at a specific NUMA node
+  mi_option_reserve_os_memory,        // reserve specified amount of OS memory in an arena at startup
+  mi_option_deprecated_segment_cache,
+  mi_option_deprecated_page_reset,
+  mi_option_abandoned_page_purge,     // immediately purge delayed purges on thread termination
+  mi_option_deprecated_segment_reset,
+  mi_option_eager_commit_delay,
+  mi_option_purge_delay,              // memory purging is delayed by N milli seconds; use 0 for immediate purging or -1 for no purging at all.
+  mi_option_use_numa_nodes,           // 0 = use all available numa nodes, otherwise use at most N nodes.
+  mi_option_limit_os_alloc,           // 1 = do not use OS memory for allocation (but only programmatically reserved arenas)
+  mi_option_os_tag,                   // tag used for OS logging (macOS only for now)
+  mi_option_max_errors,               // issue at most N error messages
+  mi_option_max_warnings,             // issue at most N warning messages
+  mi_option_max_segment_reclaim,
+  mi_option_destroy_on_exit,          // if set, release all memory on exit; sometimes used for dynamic unloading but can be unsafe.
+  mi_option_arena_reserve,            // initial memory size in KiB for arena reservation (1GiB on 64-bit)
+  mi_option_arena_purge_mult,
+  mi_option_purge_extend_delay,
+  _mi_option_last,
+  // legacy option names
+  mi_option_large_os_pages = mi_option_allow_large_os_pages,
+  mi_option_eager_region_commit = mi_option_arena_eager_commit,
+  mi_option_reset_decommits = mi_option_purge_decommits,
+  mi_option_reset_delay = mi_option_purge_delay,
+  mi_option_abandoned_page_reset = mi_option_abandoned_page_purge
+} mi_option_t;
+
+
+mi_decl_nodiscard mi_decl_export bool mi_option_is_enabled(mi_option_t option);
+mi_decl_export void mi_option_enable(mi_option_t option);
+mi_decl_export void mi_option_disable(mi_option_t option);
+mi_decl_export void mi_option_set_enabled(mi_option_t option, bool enable);
+mi_decl_export void mi_option_set_enabled_default(mi_option_t option, bool enable);
+
+mi_decl_nodiscard mi_decl_export long   mi_option_get(mi_option_t option);
+mi_decl_nodiscard mi_decl_export long   mi_option_get_clamp(mi_option_t option, long min, long max);
+mi_decl_nodiscard mi_decl_export size_t mi_option_get_size(mi_option_t option);
+mi_decl_export void mi_option_set(mi_option_t option, long value);
+mi_decl_export void mi_option_set_default(mi_option_t option, long value);
+
+
+// -------------------------------------------------------------------------------------------------------
+// "mi" prefixed implementations of various posix, Unix, Windows, and C++ allocation functions.
+// (This can be convenient when providing overrides of these functions as done in `mimalloc-override.h`.)
+// note: we use `mi_cfree` as "checked free" and it checks if the pointer is in our heap before free-ing.
+// -------------------------------------------------------------------------------------------------------
+
+mi_decl_export void  mi_cfree(void* p) mi_attr_noexcept;
+mi_decl_export void* mi__expand(void* p, size_t newsize) mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export size_t mi_malloc_size(const void* p)        mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export size_t mi_malloc_good_size(size_t size)     mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export size_t mi_malloc_usable_size(const void *p) mi_attr_noexcept;
+
+mi_decl_export int mi_posix_memalign(void** p, size_t alignment, size_t size)   mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_memalign(size_t alignment, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2) mi_attr_alloc_align(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_valloc(size_t size)  mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_pvalloc(size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(2) mi_attr_alloc_align(1);
+
+mi_decl_nodiscard mi_decl_export void* mi_reallocarray(void* p, size_t count, size_t size) mi_attr_noexcept mi_attr_alloc_size2(2,3);
+mi_decl_nodiscard mi_decl_export int   mi_reallocarr(void* p, size_t count, size_t size) mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export void* mi_aligned_recalloc(void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept;
+mi_decl_nodiscard mi_decl_export void* mi_aligned_offset_recalloc(void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept;
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict unsigned short* mi_wcsdup(const unsigned short* s) mi_attr_noexcept mi_attr_malloc;
+mi_decl_nodiscard mi_decl_export mi_decl_restrict unsigned char*  mi_mbsdup(const unsigned char* s)  mi_attr_noexcept mi_attr_malloc;
+mi_decl_export int mi_dupenv_s(char** buf, size_t* size, const char* name)                      mi_attr_noexcept;
+mi_decl_export int mi_wdupenv_s(unsigned short** buf, size_t* size, const unsigned short* name) mi_attr_noexcept;
+
+mi_decl_export void mi_free_size(void* p, size_t size)                           mi_attr_noexcept;
+mi_decl_export void mi_free_size_aligned(void* p, size_t size, size_t alignment) mi_attr_noexcept;
+mi_decl_export void mi_free_aligned(void* p, size_t alignment)                   mi_attr_noexcept;
+
+// The `mi_new` wrappers implement C++ semantics on out-of-memory instead of directly returning `NULL`.
+// (and call `std::get_new_handler` and potentially raise a `std::bad_alloc` exception).
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_new(size_t size)                   mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_new_aligned(size_t size, size_t alignment) mi_attr_malloc mi_attr_alloc_size(1) mi_attr_alloc_align(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_new_nothrow(size_t size)           mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_new_aligned_nothrow(size_t size, size_t alignment) mi_attr_noexcept mi_attr_malloc mi_attr_alloc_size(1) mi_attr_alloc_align(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_new_n(size_t count, size_t size)   mi_attr_malloc mi_attr_alloc_size2(1, 2);
+mi_decl_nodiscard mi_decl_export void* mi_new_realloc(void* p, size_t newsize)                mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export void* mi_new_reallocn(void* p, size_t newcount, size_t size) mi_attr_alloc_size2(2, 3);
+
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_alloc_new(mi_heap_t* heap, size_t size)                mi_attr_malloc mi_attr_alloc_size(2);
+mi_decl_nodiscard mi_decl_export mi_decl_restrict void* mi_heap_alloc_new_n(mi_heap_t* heap, size_t count, size_t size) mi_attr_malloc mi_attr_alloc_size2(2, 3);
+
+#ifdef __cplusplus
+}
+#endif
+
+// ---------------------------------------------------------------------------------------------
+// Implement the C++ std::allocator interface for use in STL containers.
+// (note: see `mimalloc-new-delete.h` for overriding the new/delete operators globally)
+// ---------------------------------------------------------------------------------------------
+#ifdef __cplusplus
+
+#include <cstddef>     // std::size_t
+#include <cstdint>     // PTRDIFF_MAX
+#if (__cplusplus >= 201103L) || (_MSC_VER > 1900)  // C++11
+#include <type_traits> // std::true_type
+#include <utility>     // std::forward
+#endif
+
+template<class T> struct _mi_stl_allocator_common {
+  typedef T                 value_type;
+  typedef std::size_t       size_type;
+  typedef std::ptrdiff_t    difference_type;
+  typedef value_type&       reference;
+  typedef value_type const& const_reference;
+  typedef value_type*       pointer;
+  typedef value_type const* const_pointer;
+
+  #if ((__cplusplus >= 201103L) || (_MSC_VER > 1900))  // C++11
+  using propagate_on_container_copy_assignment = std::true_type;
+  using propagate_on_container_move_assignment = std::true_type;
+  using propagate_on_container_swap            = std::true_type;
+  template <class U, class ...Args> void construct(U* p, Args&& ...args) { ::new(p) U(std::forward<Args>(args)...); }
+  template <class U> void destroy(U* p) mi_attr_noexcept { p->~U(); }
+  #else
+  void construct(pointer p, value_type const& val) { ::new(p) value_type(val); }
+  void destroy(pointer p) { p->~value_type(); }
+  #endif
+
+  size_type     max_size() const mi_attr_noexcept { return (PTRDIFF_MAX/sizeof(value_type)); }
+  pointer       address(reference x) const        { return &x; }
+  const_pointer address(const_reference x) const  { return &x; }
+};
+
+template<class T> struct mi_stl_allocator : public _mi_stl_allocator_common<T> {
+  using typename _mi_stl_allocator_common<T>::size_type;
+  using typename _mi_stl_allocator_common<T>::value_type;
+  using typename _mi_stl_allocator_common<T>::pointer;
+  template <class U> struct rebind { typedef mi_stl_allocator<U> other; };
+
+  mi_stl_allocator()                                             mi_attr_noexcept = default;
+  mi_stl_allocator(const mi_stl_allocator&)                      mi_attr_noexcept = default;
+  template<class U> mi_stl_allocator(const mi_stl_allocator<U>&) mi_attr_noexcept { }
+  mi_stl_allocator  select_on_container_copy_construction() const { return *this; }
+  void              deallocate(T* p, size_type) { mi_free(p); }
+
+  #if (__cplusplus >= 201703L)  // C++17
+  mi_decl_nodiscard T* allocate(size_type count) { return static_cast<T*>(mi_new_n(count, sizeof(T))); }
+  mi_decl_nodiscard T* allocate(size_type count, const void*) { return allocate(count); }
+  #else
+  mi_decl_nodiscard pointer allocate(size_type count, const void* = 0) { return static_cast<pointer>(mi_new_n(count, sizeof(value_type))); }
+  #endif
+
+  #if ((__cplusplus >= 201103L) || (_MSC_VER > 1900))  // C++11
+  using is_always_equal = std::true_type;
+  #endif
+};
+
+template<class T1,class T2> bool operator==(const mi_stl_allocator<T1>& , const mi_stl_allocator<T2>& ) mi_attr_noexcept { return true; }
+template<class T1,class T2> bool operator!=(const mi_stl_allocator<T1>& , const mi_stl_allocator<T2>& ) mi_attr_noexcept { return false; }
+
+
+#if (__cplusplus >= 201103L) || (_MSC_VER >= 1900)  // C++11
+#define MI_HAS_HEAP_STL_ALLOCATOR 1
+
+#include <memory>      // std::shared_ptr
+
+// Common base class for STL allocators in a specific heap
+template<class T, bool _mi_destroy> struct _mi_heap_stl_allocator_common : public _mi_stl_allocator_common<T> {
+  using typename _mi_stl_allocator_common<T>::size_type;
+  using typename _mi_stl_allocator_common<T>::value_type;
+  using typename _mi_stl_allocator_common<T>::pointer;
+
+  _mi_heap_stl_allocator_common(mi_heap_t* hp) : heap(hp) { }    /* will not delete nor destroy the passed in heap */
+
+  #if (__cplusplus >= 201703L)  // C++17
+  mi_decl_nodiscard T* allocate(size_type count) { return static_cast<T*>(mi_heap_alloc_new_n(this->heap.get(), count, sizeof(T))); }
+  mi_decl_nodiscard T* allocate(size_type count, const void*) { return allocate(count); }
+  #else
+  mi_decl_nodiscard pointer allocate(size_type count, const void* = 0) { return static_cast<pointer>(mi_heap_alloc_new_n(this->heap.get(), count, sizeof(value_type))); }
+  #endif
+
+  #if ((__cplusplus >= 201103L) || (_MSC_VER > 1900))  // C++11
+  using is_always_equal = std::false_type;
+  #endif
+
+  void collect(bool force) { mi_heap_collect(this->heap.get(), force); }
+  template<class U> bool is_equal(const _mi_heap_stl_allocator_common<U, _mi_destroy>& x) const { return (this->heap == x.heap); }
+
+protected:
+  std::shared_ptr<mi_heap_t> heap;
+  template<class U, bool D> friend struct _mi_heap_stl_allocator_common;
+
+  _mi_heap_stl_allocator_common() {
+    mi_heap_t* hp = mi_heap_new();
+    this->heap.reset(hp, (_mi_destroy ? &heap_destroy : &heap_delete));  /* calls heap_delete/destroy when the refcount drops to zero */
+  }
+  _mi_heap_stl_allocator_common(const _mi_heap_stl_allocator_common& x) mi_attr_noexcept : heap(x.heap) { }
+  template<class U> _mi_heap_stl_allocator_common(const _mi_heap_stl_allocator_common<U, _mi_destroy>& x) mi_attr_noexcept : heap(x.heap) { }
+
+private:
+  static void heap_delete(mi_heap_t* hp)  { if (hp != NULL) { mi_heap_delete(hp); } }
+  static void heap_destroy(mi_heap_t* hp) { if (hp != NULL) { mi_heap_destroy(hp); } }
+};
+
+// STL allocator allocation in a specific heap
+template<class T> struct mi_heap_stl_allocator : public _mi_heap_stl_allocator_common<T, false> {
+  using typename _mi_heap_stl_allocator_common<T, false>::size_type;
+  mi_heap_stl_allocator() : _mi_heap_stl_allocator_common<T, false>() { } // creates fresh heap that is deleted when the destructor is called
+  mi_heap_stl_allocator(mi_heap_t* hp) : _mi_heap_stl_allocator_common<T, false>(hp) { }  // no delete nor destroy on the passed in heap
+  template<class U> mi_heap_stl_allocator(const mi_heap_stl_allocator<U>& x) mi_attr_noexcept : _mi_heap_stl_allocator_common<T, false>(x) { }
+
+  mi_heap_stl_allocator select_on_container_copy_construction() const { return *this; }
+  void deallocate(T* p, size_type) { mi_free(p); }
+  template<class U> struct rebind { typedef mi_heap_stl_allocator<U> other; };
+};
+
+template<class T1, class T2> bool operator==(const mi_heap_stl_allocator<T1>& x, const mi_heap_stl_allocator<T2>& y) mi_attr_noexcept { return (x.is_equal(y)); }
+template<class T1, class T2> bool operator!=(const mi_heap_stl_allocator<T1>& x, const mi_heap_stl_allocator<T2>& y) mi_attr_noexcept { return (!x.is_equal(y)); }
+
+
+// STL allocator allocation in a specific heap, where `free` does nothing and
+// the heap is destroyed in one go on destruction -- use with care!
+template<class T> struct mi_heap_destroy_stl_allocator : public _mi_heap_stl_allocator_common<T, true> {
+  using typename _mi_heap_stl_allocator_common<T, true>::size_type;
+  mi_heap_destroy_stl_allocator() : _mi_heap_stl_allocator_common<T, true>() { } // creates fresh heap that is destroyed when the destructor is called
+  mi_heap_destroy_stl_allocator(mi_heap_t* hp) : _mi_heap_stl_allocator_common<T, true>(hp) { }  // no delete nor destroy on the passed in heap
+  template<class U> mi_heap_destroy_stl_allocator(const mi_heap_destroy_stl_allocator<U>& x) mi_attr_noexcept : _mi_heap_stl_allocator_common<T, true>(x) { }
+
+  mi_heap_destroy_stl_allocator select_on_container_copy_construction() const { return *this; }
+  void deallocate(T*, size_type) { /* do nothing as we destroy the heap on destruct. */ }
+  template<class U> struct rebind { typedef mi_heap_destroy_stl_allocator<U> other; };
+};
+
+template<class T1, class T2> bool operator==(const mi_heap_destroy_stl_allocator<T1>& x, const mi_heap_destroy_stl_allocator<T2>& y) mi_attr_noexcept { return (x.is_equal(y)); }
+template<class T1, class T2> bool operator!=(const mi_heap_destroy_stl_allocator<T1>& x, const mi_heap_destroy_stl_allocator<T2>& y) mi_attr_noexcept { return (!x.is_equal(y)); }
+
+#endif // C++11
+
+#endif // __cplusplus
+
+#endif
diff --git a/Include/internal/mimalloc/mimalloc/atomic.h b/Include/internal/mimalloc/mimalloc/atomic.h
new file mode 100644
index 00000000000000..eb8478ceed6adf
--- /dev/null
+++ b/Include/internal/mimalloc/mimalloc/atomic.h
@@ -0,0 +1,385 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023 Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#pragma once
+#ifndef MIMALLOC_ATOMIC_H
+#define MIMALLOC_ATOMIC_H
+
+// --------------------------------------------------------------------------------------------
+// Atomics
+// We need to be portable between C, C++, and MSVC.
+// We base the primitives on the C/C++ atomics and create a mimimal wrapper for MSVC in C compilation mode.
+// This is why we try to use only `uintptr_t` and `<type>*` as atomic types.
+// To gain better insight in the range of used atomics, we use explicitly named memory order operations
+// instead of passing the memory order as a parameter.
+// -----------------------------------------------------------------------------------------------
+
+#if defined(__cplusplus)
+// Use C++ atomics
+#include <atomic>
+#define  _Atomic(tp)            std::atomic<tp>
+#define  mi_atomic(name)        std::atomic_##name
+#define  mi_memory_order(name)  std::memory_order_##name
+#if !defined(ATOMIC_VAR_INIT) || (__cplusplus >= 202002L) // c++20, see issue #571
+ #define MI_ATOMIC_VAR_INIT(x)  x
+#else
+ #define MI_ATOMIC_VAR_INIT(x)  ATOMIC_VAR_INIT(x)
+#endif
+#elif defined(_MSC_VER)
+// Use MSVC C wrapper for C11 atomics
+#define  _Atomic(tp)            tp
+#define  MI_ATOMIC_VAR_INIT(x)  x
+#define  mi_atomic(name)        mi_atomic_##name
+#define  mi_memory_order(name)  mi_memory_order_##name
+#else
+// Use C11 atomics
+#include <stdatomic.h>
+#define  mi_atomic(name)        atomic_##name
+#define  mi_memory_order(name)  memory_order_##name
+#if !defined(ATOMIC_VAR_INIT) || (__STDC_VERSION__ >= 201710L) // c17, see issue #735
+ #define MI_ATOMIC_VAR_INIT(x) x
+#else
+ #define MI_ATOMIC_VAR_INIT(x) ATOMIC_VAR_INIT(x)
+#endif
+#endif
+
+// Various defines for all used memory orders in mimalloc
+#define mi_atomic_cas_weak(p,expected,desired,mem_success,mem_fail)  \
+  mi_atomic(compare_exchange_weak_explicit)(p,expected,desired,mem_success,mem_fail)
+
+#define mi_atomic_cas_strong(p,expected,desired,mem_success,mem_fail)  \
+  mi_atomic(compare_exchange_strong_explicit)(p,expected,desired,mem_success,mem_fail)
+
+#define mi_atomic_load_acquire(p)                mi_atomic(load_explicit)(p,mi_memory_order(acquire))
+#define mi_atomic_load_relaxed(p)                mi_atomic(load_explicit)(p,mi_memory_order(relaxed))
+#define mi_atomic_store_release(p,x)             mi_atomic(store_explicit)(p,x,mi_memory_order(release))
+#define mi_atomic_store_relaxed(p,x)             mi_atomic(store_explicit)(p,x,mi_memory_order(relaxed))
+#define mi_atomic_exchange_release(p,x)          mi_atomic(exchange_explicit)(p,x,mi_memory_order(release))
+#define mi_atomic_exchange_acq_rel(p,x)          mi_atomic(exchange_explicit)(p,x,mi_memory_order(acq_rel))
+#define mi_atomic_cas_weak_release(p,exp,des)    mi_atomic_cas_weak(p,exp,des,mi_memory_order(release),mi_memory_order(relaxed))
+#define mi_atomic_cas_weak_acq_rel(p,exp,des)    mi_atomic_cas_weak(p,exp,des,mi_memory_order(acq_rel),mi_memory_order(acquire))
+#define mi_atomic_cas_strong_release(p,exp,des)  mi_atomic_cas_strong(p,exp,des,mi_memory_order(release),mi_memory_order(relaxed))
+#define mi_atomic_cas_strong_acq_rel(p,exp,des)  mi_atomic_cas_strong(p,exp,des,mi_memory_order(acq_rel),mi_memory_order(acquire))
+
+#define mi_atomic_add_relaxed(p,x)               mi_atomic(fetch_add_explicit)(p,x,mi_memory_order(relaxed))
+#define mi_atomic_sub_relaxed(p,x)               mi_atomic(fetch_sub_explicit)(p,x,mi_memory_order(relaxed))
+#define mi_atomic_add_acq_rel(p,x)               mi_atomic(fetch_add_explicit)(p,x,mi_memory_order(acq_rel))
+#define mi_atomic_sub_acq_rel(p,x)               mi_atomic(fetch_sub_explicit)(p,x,mi_memory_order(acq_rel))
+#define mi_atomic_and_acq_rel(p,x)               mi_atomic(fetch_and_explicit)(p,x,mi_memory_order(acq_rel))
+#define mi_atomic_or_acq_rel(p,x)                mi_atomic(fetch_or_explicit)(p,x,mi_memory_order(acq_rel))
+
+#define mi_atomic_increment_relaxed(p)           mi_atomic_add_relaxed(p,(uintptr_t)1)
+#define mi_atomic_decrement_relaxed(p)           mi_atomic_sub_relaxed(p,(uintptr_t)1)
+#define mi_atomic_increment_acq_rel(p)           mi_atomic_add_acq_rel(p,(uintptr_t)1)
+#define mi_atomic_decrement_acq_rel(p)           mi_atomic_sub_acq_rel(p,(uintptr_t)1)
+
+static inline void mi_atomic_yield(void);
+static inline intptr_t mi_atomic_addi(_Atomic(intptr_t)*p, intptr_t add);
+static inline intptr_t mi_atomic_subi(_Atomic(intptr_t)*p, intptr_t sub);
+
+
+#if defined(__cplusplus) || !defined(_MSC_VER)
+
+// In C++/C11 atomics we have polymorphic atomics so can use the typed `ptr` variants (where `tp` is the type of atomic value)
+// We use these macros so we can provide a typed wrapper in MSVC in C compilation mode as well
+#define mi_atomic_load_ptr_acquire(tp,p)                mi_atomic_load_acquire(p)
+#define mi_atomic_load_ptr_relaxed(tp,p)                mi_atomic_load_relaxed(p)
+
+// In C++ we need to add casts to help resolve templates if NULL is passed
+#if defined(__cplusplus)
+#define mi_atomic_store_ptr_release(tp,p,x)             mi_atomic_store_release(p,(tp*)x)
+#define mi_atomic_store_ptr_relaxed(tp,p,x)             mi_atomic_store_relaxed(p,(tp*)x)
+#define mi_atomic_cas_ptr_weak_release(tp,p,exp,des)    mi_atomic_cas_weak_release(p,exp,(tp*)des)
+#define mi_atomic_cas_ptr_weak_acq_rel(tp,p,exp,des)    mi_atomic_cas_weak_acq_rel(p,exp,(tp*)des)
+#define mi_atomic_cas_ptr_strong_release(tp,p,exp,des)  mi_atomic_cas_strong_release(p,exp,(tp*)des)
+#define mi_atomic_exchange_ptr_release(tp,p,x)          mi_atomic_exchange_release(p,(tp*)x)
+#define mi_atomic_exchange_ptr_acq_rel(tp,p,x)          mi_atomic_exchange_acq_rel(p,(tp*)x)
+#else
+#define mi_atomic_store_ptr_release(tp,p,x)             mi_atomic_store_release(p,x)
+#define mi_atomic_store_ptr_relaxed(tp,p,x)             mi_atomic_store_relaxed(p,x)
+#define mi_atomic_cas_ptr_weak_release(tp,p,exp,des)    mi_atomic_cas_weak_release(p,exp,des)
+#define mi_atomic_cas_ptr_weak_acq_rel(tp,p,exp,des)    mi_atomic_cas_weak_acq_rel(p,exp,des)
+#define mi_atomic_cas_ptr_strong_release(tp,p,exp,des)  mi_atomic_cas_strong_release(p,exp,des)
+#define mi_atomic_exchange_ptr_release(tp,p,x)          mi_atomic_exchange_release(p,x)
+#define mi_atomic_exchange_ptr_acq_rel(tp,p,x)          mi_atomic_exchange_acq_rel(p,x)
+#endif
+
+// These are used by the statistics
+static inline int64_t mi_atomic_addi64_relaxed(volatile int64_t* p, int64_t add) {
+  return mi_atomic(fetch_add_explicit)((_Atomic(int64_t)*)p, add, mi_memory_order(relaxed));
+}
+static inline void mi_atomic_maxi64_relaxed(volatile int64_t* p, int64_t x) {
+  int64_t current = mi_atomic_load_relaxed((_Atomic(int64_t)*)p);
+  while (current < x && !mi_atomic_cas_weak_release((_Atomic(int64_t)*)p, &current, x)) { /* nothing */ };
+}
+
+// Used by timers
+#define mi_atomic_loadi64_acquire(p)            mi_atomic(load_explicit)(p,mi_memory_order(acquire))
+#define mi_atomic_loadi64_relaxed(p)            mi_atomic(load_explicit)(p,mi_memory_order(relaxed))
+#define mi_atomic_storei64_release(p,x)         mi_atomic(store_explicit)(p,x,mi_memory_order(release))
+#define mi_atomic_storei64_relaxed(p,x)         mi_atomic(store_explicit)(p,x,mi_memory_order(relaxed))
+
+#define mi_atomic_casi64_strong_acq_rel(p,e,d)  mi_atomic_cas_strong_acq_rel(p,e,d)
+#define mi_atomic_addi64_acq_rel(p,i)           mi_atomic_add_acq_rel(p,i)
+
+
+#elif defined(_MSC_VER)
+
+// MSVC C compilation wrapper that uses Interlocked operations to model C11 atomics.
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <intrin.h>
+#ifdef _WIN64
+typedef LONG64   msc_intptr_t;
+#define MI_64(f) f##64
+#else
+typedef LONG     msc_intptr_t;
+#define MI_64(f) f
+#endif
+
+typedef enum mi_memory_order_e {
+  mi_memory_order_relaxed,
+  mi_memory_order_consume,
+  mi_memory_order_acquire,
+  mi_memory_order_release,
+  mi_memory_order_acq_rel,
+  mi_memory_order_seq_cst
+} mi_memory_order;
+
+static inline uintptr_t mi_atomic_fetch_add_explicit(_Atomic(uintptr_t)*p, uintptr_t add, mi_memory_order mo) {
+  (void)(mo);
+  return (uintptr_t)MI_64(_InterlockedExchangeAdd)((volatile msc_intptr_t*)p, (msc_intptr_t)add);
+}
+static inline uintptr_t mi_atomic_fetch_sub_explicit(_Atomic(uintptr_t)*p, uintptr_t sub, mi_memory_order mo) {
+  (void)(mo);
+  return (uintptr_t)MI_64(_InterlockedExchangeAdd)((volatile msc_intptr_t*)p, -((msc_intptr_t)sub));
+}
+static inline uintptr_t mi_atomic_fetch_and_explicit(_Atomic(uintptr_t)*p, uintptr_t x, mi_memory_order mo) {
+  (void)(mo);
+  return (uintptr_t)MI_64(_InterlockedAnd)((volatile msc_intptr_t*)p, (msc_intptr_t)x);
+}
+static inline uintptr_t mi_atomic_fetch_or_explicit(_Atomic(uintptr_t)*p, uintptr_t x, mi_memory_order mo) {
+  (void)(mo);
+  return (uintptr_t)MI_64(_InterlockedOr)((volatile msc_intptr_t*)p, (msc_intptr_t)x);
+}
+static inline bool mi_atomic_compare_exchange_strong_explicit(_Atomic(uintptr_t)*p, uintptr_t* expected, uintptr_t desired, mi_memory_order mo1, mi_memory_order mo2) {
+  (void)(mo1); (void)(mo2);
+  uintptr_t read = (uintptr_t)MI_64(_InterlockedCompareExchange)((volatile msc_intptr_t*)p, (msc_intptr_t)desired, (msc_intptr_t)(*expected));
+  if (read == *expected) {
+    return true;
+  }
+  else {
+    *expected = read;
+    return false;
+  }
+}
+static inline bool mi_atomic_compare_exchange_weak_explicit(_Atomic(uintptr_t)*p, uintptr_t* expected, uintptr_t desired, mi_memory_order mo1, mi_memory_order mo2) {
+  return mi_atomic_compare_exchange_strong_explicit(p, expected, desired, mo1, mo2);
+}
+static inline uintptr_t mi_atomic_exchange_explicit(_Atomic(uintptr_t)*p, uintptr_t exchange, mi_memory_order mo) {
+  (void)(mo);
+  return (uintptr_t)MI_64(_InterlockedExchange)((volatile msc_intptr_t*)p, (msc_intptr_t)exchange);
+}
+static inline void mi_atomic_thread_fence(mi_memory_order mo) {
+  (void)(mo);
+  _Atomic(uintptr_t) x = 0;
+  mi_atomic_exchange_explicit(&x, 1, mo);
+}
+static inline uintptr_t mi_atomic_load_explicit(_Atomic(uintptr_t) const* p, mi_memory_order mo) {
+  (void)(mo);
+#if defined(_M_IX86) || defined(_M_X64)
+  return *p;
+#else
+  uintptr_t x = *p;
+  if (mo > mi_memory_order_relaxed) {
+    while (!mi_atomic_compare_exchange_weak_explicit((_Atomic(uintptr_t)*)p, &x, x, mo, mi_memory_order_relaxed)) { /* nothing */ };
+  }
+  return x;
+#endif
+}
+static inline void mi_atomic_store_explicit(_Atomic(uintptr_t)*p, uintptr_t x, mi_memory_order mo) {
+  (void)(mo);
+#if defined(_M_IX86) || defined(_M_X64)
+  *p = x;
+#else
+  mi_atomic_exchange_explicit(p, x, mo);
+#endif
+}
+static inline int64_t mi_atomic_loadi64_explicit(_Atomic(int64_t)*p, mi_memory_order mo) {
+  (void)(mo);
+#if defined(_M_X64)
+  return *p;
+#else
+  int64_t old = *p;
+  int64_t x = old;
+  while ((old = InterlockedCompareExchange64(p, x, old)) != x) {
+    x = old;
+  }
+  return x;
+#endif
+}
+static inline void mi_atomic_storei64_explicit(_Atomic(int64_t)*p, int64_t x, mi_memory_order mo) {
+  (void)(mo);
+#if defined(x_M_IX86) || defined(_M_X64)
+  *p = x;
+#else
+  InterlockedExchange64(p, x);
+#endif
+}
+
+// These are used by the statistics
+static inline int64_t mi_atomic_addi64_relaxed(volatile _Atomic(int64_t)*p, int64_t add) {
+#ifdef _WIN64
+  return (int64_t)mi_atomic_addi((int64_t*)p, add);
+#else
+  int64_t current;
+  int64_t sum;
+  do {
+    current = *p;
+    sum = current + add;
+  } while (_InterlockedCompareExchange64(p, sum, current) != current);
+  return current;
+#endif
+}
+static inline void mi_atomic_maxi64_relaxed(volatile _Atomic(int64_t)*p, int64_t x) {
+  int64_t current;
+  do {
+    current = *p;
+  } while (current < x && _InterlockedCompareExchange64(p, x, current) != current);
+}
+
+static inline void mi_atomic_addi64_acq_rel(volatile _Atomic(int64_t*)p, int64_t i) {
+  mi_atomic_addi64_relaxed(p, i);
+}
+
+static inline bool mi_atomic_casi64_strong_acq_rel(volatile _Atomic(int64_t*)p, int64_t* exp, int64_t des) {
+  int64_t read = _InterlockedCompareExchange64(p, des, *exp);
+  if (read == *exp) {
+    return true;
+  }
+  else {
+    *exp = read;
+    return false;
+  }
+}
+
+// The pointer macros cast to `uintptr_t`.
+#define mi_atomic_load_ptr_acquire(tp,p)                (tp*)mi_atomic_load_acquire((_Atomic(uintptr_t)*)(p))
+#define mi_atomic_load_ptr_relaxed(tp,p)                (tp*)mi_atomic_load_relaxed((_Atomic(uintptr_t)*)(p))
+#define mi_atomic_store_ptr_release(tp,p,x)             mi_atomic_store_release((_Atomic(uintptr_t)*)(p),(uintptr_t)(x))
+#define mi_atomic_store_ptr_relaxed(tp,p,x)             mi_atomic_store_relaxed((_Atomic(uintptr_t)*)(p),(uintptr_t)(x))
+#define mi_atomic_cas_ptr_weak_release(tp,p,exp,des)    mi_atomic_cas_weak_release((_Atomic(uintptr_t)*)(p),(uintptr_t*)exp,(uintptr_t)des)
+#define mi_atomic_cas_ptr_weak_acq_rel(tp,p,exp,des)    mi_atomic_cas_weak_acq_rel((_Atomic(uintptr_t)*)(p),(uintptr_t*)exp,(uintptr_t)des)
+#define mi_atomic_cas_ptr_strong_release(tp,p,exp,des)  mi_atomic_cas_strong_release((_Atomic(uintptr_t)*)(p),(uintptr_t*)exp,(uintptr_t)des)
+#define mi_atomic_exchange_ptr_release(tp,p,x)          (tp*)mi_atomic_exchange_release((_Atomic(uintptr_t)*)(p),(uintptr_t)x)
+#define mi_atomic_exchange_ptr_acq_rel(tp,p,x)          (tp*)mi_atomic_exchange_acq_rel((_Atomic(uintptr_t)*)(p),(uintptr_t)x)
+
+#define mi_atomic_loadi64_acquire(p)    mi_atomic(loadi64_explicit)(p,mi_memory_order(acquire))
+#define mi_atomic_loadi64_relaxed(p)    mi_atomic(loadi64_explicit)(p,mi_memory_order(relaxed))
+#define mi_atomic_storei64_release(p,x) mi_atomic(storei64_explicit)(p,x,mi_memory_order(release))
+#define mi_atomic_storei64_relaxed(p,x) mi_atomic(storei64_explicit)(p,x,mi_memory_order(relaxed))
+
+
+#endif
+
+
+// Atomically add a signed value; returns the previous value.
+static inline intptr_t mi_atomic_addi(_Atomic(intptr_t)*p, intptr_t add) {
+  return (intptr_t)mi_atomic_add_acq_rel((_Atomic(uintptr_t)*)p, (uintptr_t)add);
+}
+
+// Atomically subtract a signed value; returns the previous value.
+static inline intptr_t mi_atomic_subi(_Atomic(intptr_t)*p, intptr_t sub) {
+  return (intptr_t)mi_atomic_addi(p, -sub);
+}
+
+typedef _Atomic(uintptr_t) mi_atomic_once_t;
+
+// Returns true only on the first invocation
+static inline bool mi_atomic_once( mi_atomic_once_t* once ) {
+  if (mi_atomic_load_relaxed(once) != 0) return false;     // quick test
+  uintptr_t expected = 0;
+  return mi_atomic_cas_strong_acq_rel(once, &expected, (uintptr_t)1); // try to set to 1
+}
+
+typedef _Atomic(uintptr_t) mi_atomic_guard_t;
+
+// Allows only one thread to execute at a time
+#define mi_atomic_guard(guard) \
+  uintptr_t _mi_guard_expected = 0; \
+  for(bool _mi_guard_once = true; \
+      _mi_guard_once && mi_atomic_cas_strong_acq_rel(guard,&_mi_guard_expected,(uintptr_t)1); \
+      (mi_atomic_store_release(guard,(uintptr_t)0), _mi_guard_once = false) )
+
+
+
+// Yield
+#if defined(__cplusplus)
+#include <thread>
+static inline void mi_atomic_yield(void) {
+  std::this_thread::yield();
+}
+#elif defined(_WIN32)
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+static inline void mi_atomic_yield(void) {
+  YieldProcessor();
+}
+#elif defined(__SSE2__)
+#include <emmintrin.h>
+static inline void mi_atomic_yield(void) {
+  _mm_pause();
+}
+#elif (defined(__GNUC__) || defined(__clang__)) && \
+      (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__armel__) || defined(__ARMEL__) || \
+       defined(__aarch64__) || defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)) || defined(__POWERPC__)
+#if defined(__x86_64__) || defined(__i386__)
+static inline void mi_atomic_yield(void) {
+  __asm__ volatile ("pause" ::: "memory");
+}
+#elif defined(__aarch64__)
+static inline void mi_atomic_yield(void) {
+  __asm__ volatile("wfe");
+}
+#elif (defined(__arm__) && __ARM_ARCH__ >= 7)
+static inline void mi_atomic_yield(void) {
+  __asm__ volatile("yield" ::: "memory");
+}
+#elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__) || defined(__POWERPC__)
+#ifdef __APPLE__
+static inline void mi_atomic_yield(void) {
+  __asm__ volatile ("or r27,r27,r27" ::: "memory");
+}
+#else
+static inline void mi_atomic_yield(void) {
+  __asm__ __volatile__ ("or 27,27,27" ::: "memory");
+}
+#endif
+#elif defined(__armel__) || defined(__ARMEL__)
+static inline void mi_atomic_yield(void) {
+  __asm__ volatile ("nop" ::: "memory");
+}
+#endif
+#elif defined(__sun)
+// Fallback for other archs
+#include <synch.h>
+static inline void mi_atomic_yield(void) {
+  smt_pause();
+}
+#elif defined(__wasi__)
+#include <sched.h>
+static inline void mi_atomic_yield(void) {
+  sched_yield();
+}
+#else
+#include <unistd.h>
+static inline void mi_atomic_yield(void) {
+  sleep(0);
+}
+#endif
+
+
+#endif // __MIMALLOC_ATOMIC_H
diff --git a/Include/internal/mimalloc/mimalloc/internal.h b/Include/internal/mimalloc/mimalloc/internal.h
new file mode 100644
index 00000000000000..f076bc6a40f977
--- /dev/null
+++ b/Include/internal/mimalloc/mimalloc/internal.h
@@ -0,0 +1,979 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#pragma once
+#ifndef MIMALLOC_INTERNAL_H
+#define MIMALLOC_INTERNAL_H
+
+
+// --------------------------------------------------------------------------
+// This file contains the interal API's of mimalloc and various utility
+// functions and macros.
+// --------------------------------------------------------------------------
+
+#include "mimalloc/types.h"
+#include "mimalloc/track.h"
+
+#if (MI_DEBUG>0)
+#define mi_trace_message(...)  _mi_trace_message(__VA_ARGS__)
+#else
+#define mi_trace_message(...)
+#endif
+
+#define MI_CACHE_LINE          64
+#if defined(_MSC_VER)
+#pragma warning(disable:4127)   // suppress constant conditional warning (due to MI_SECURE paths)
+#pragma warning(disable:26812)  // unscoped enum warning
+#define mi_decl_noinline        __declspec(noinline)
+#define mi_decl_thread          __declspec(thread)
+#define mi_decl_cache_align     __declspec(align(MI_CACHE_LINE))
+#elif (defined(__GNUC__) && (__GNUC__ >= 3)) || defined(__clang__) // includes clang and icc
+#define mi_decl_noinline        __attribute__((noinline))
+#define mi_decl_thread          __thread
+#define mi_decl_cache_align     __attribute__((aligned(MI_CACHE_LINE)))
+#else
+#define mi_decl_noinline
+#define mi_decl_thread          __thread        // hope for the best :-)
+#define mi_decl_cache_align
+#endif
+
+#if defined(__EMSCRIPTEN__) && !defined(__wasi__)
+#define __wasi__
+#endif
+
+#if defined(__cplusplus)
+#define mi_decl_externc       extern "C"
+#else
+#define mi_decl_externc
+#endif
+
+// pthreads
+#if !defined(_WIN32) && !defined(__wasi__)
+#define  MI_USE_PTHREADS
+#include <pthread.h>
+#endif
+
+// "options.c"
+void       _mi_fputs(mi_output_fun* out, void* arg, const char* prefix, const char* message);
+void       _mi_fprintf(mi_output_fun* out, void* arg, const char* fmt, ...);
+void       _mi_warning_message(const char* fmt, ...);
+void       _mi_verbose_message(const char* fmt, ...);
+void       _mi_trace_message(const char* fmt, ...);
+void       _mi_options_init(void);
+void       _mi_error_message(int err, const char* fmt, ...);
+
+// random.c
+void       _mi_random_init(mi_random_ctx_t* ctx);
+void       _mi_random_init_weak(mi_random_ctx_t* ctx);
+void       _mi_random_reinit_if_weak(mi_random_ctx_t * ctx);
+void       _mi_random_split(mi_random_ctx_t* ctx, mi_random_ctx_t* new_ctx);
+uintptr_t  _mi_random_next(mi_random_ctx_t* ctx);
+uintptr_t  _mi_heap_random_next(mi_heap_t* heap);
+uintptr_t  _mi_os_random_weak(uintptr_t extra_seed);
+static inline uintptr_t _mi_random_shuffle(uintptr_t x);
+
+// init.c
+extern mi_decl_cache_align mi_stats_t       _mi_stats_main;
+extern mi_decl_cache_align const mi_page_t  _mi_page_empty;
+bool       _mi_is_main_thread(void);
+size_t     _mi_current_thread_count(void);
+bool       _mi_preloading(void);           // true while the C runtime is not initialized yet
+mi_threadid_t _mi_thread_id(void) mi_attr_noexcept;
+mi_heap_t*    _mi_heap_main_get(void);     // statically allocated main backing heap
+void       _mi_thread_done(mi_heap_t* heap);
+void       _mi_thread_data_collect(void);
+
+// os.c
+void       _mi_os_init(void);                                            // called from process init
+void*      _mi_os_alloc(size_t size, mi_memid_t* memid, mi_stats_t* stats);
+void       _mi_os_free(void* p, size_t size, mi_memid_t memid, mi_stats_t* stats);
+void       _mi_os_free_ex(void* p, size_t size, bool still_committed, mi_memid_t memid, mi_stats_t* stats);
+
+size_t     _mi_os_page_size(void);
+size_t     _mi_os_good_alloc_size(size_t size);
+bool       _mi_os_has_overcommit(void);
+bool       _mi_os_has_virtual_reserve(void);
+
+bool       _mi_os_purge(void* p, size_t size, mi_stats_t* stats);
+bool       _mi_os_reset(void* addr, size_t size, mi_stats_t* tld_stats);
+bool       _mi_os_commit(void* p, size_t size, bool* is_zero, mi_stats_t* stats);
+bool       _mi_os_decommit(void* addr, size_t size, mi_stats_t* stats);
+bool       _mi_os_protect(void* addr, size_t size);
+bool       _mi_os_unprotect(void* addr, size_t size);
+bool       _mi_os_purge(void* p, size_t size, mi_stats_t* stats);
+bool       _mi_os_purge_ex(void* p, size_t size, bool allow_reset, mi_stats_t* stats);
+
+void*      _mi_os_alloc_aligned(size_t size, size_t alignment, bool commit, bool allow_large, mi_memid_t* memid, mi_stats_t* stats);
+void*      _mi_os_alloc_aligned_at_offset(size_t size, size_t alignment, size_t align_offset, bool commit, bool allow_large, mi_memid_t* memid, mi_stats_t* tld_stats);
+
+void*      _mi_os_get_aligned_hint(size_t try_alignment, size_t size);
+bool       _mi_os_use_large_page(size_t size, size_t alignment);
+size_t     _mi_os_large_page_size(void);
+
+void*      _mi_os_alloc_huge_os_pages(size_t pages, int numa_node, mi_msecs_t max_secs, size_t* pages_reserved, size_t* psize, mi_memid_t* memid);
+
+// arena.c
+mi_arena_id_t _mi_arena_id_none(void);
+void       _mi_arena_free(void* p, size_t size, size_t still_committed_size, mi_memid_t memid, mi_stats_t* stats);
+void*      _mi_arena_alloc(size_t size, bool commit, bool allow_large, mi_arena_id_t req_arena_id, mi_memid_t* memid, mi_os_tld_t* tld);
+void*      _mi_arena_alloc_aligned(size_t size, size_t alignment, size_t align_offset, bool commit, bool allow_large, mi_arena_id_t req_arena_id, mi_memid_t* memid, mi_os_tld_t* tld);
+bool       _mi_arena_memid_is_suitable(mi_memid_t memid, mi_arena_id_t request_arena_id);
+bool       _mi_arena_contains(const void* p);
+void       _mi_arena_collect(bool force_purge, mi_stats_t* stats);
+void       _mi_arena_unsafe_destroy_all(mi_stats_t* stats);
+
+// "segment-map.c"
+void       _mi_segment_map_allocated_at(const mi_segment_t* segment);
+void       _mi_segment_map_freed_at(const mi_segment_t* segment);
+
+// "segment.c"
+mi_page_t* _mi_segment_page_alloc(mi_heap_t* heap, size_t block_size, size_t page_alignment, mi_segments_tld_t* tld, mi_os_tld_t* os_tld);
+void       _mi_segment_page_free(mi_page_t* page, bool force, mi_segments_tld_t* tld);
+void       _mi_segment_page_abandon(mi_page_t* page, mi_segments_tld_t* tld);
+bool       _mi_segment_try_reclaim_abandoned( mi_heap_t* heap, bool try_all, mi_segments_tld_t* tld);
+void       _mi_segment_thread_collect(mi_segments_tld_t* tld);
+
+#if MI_HUGE_PAGE_ABANDON
+void       _mi_segment_huge_page_free(mi_segment_t* segment, mi_page_t* page, mi_block_t* block);
+#else
+void       _mi_segment_huge_page_reset(mi_segment_t* segment, mi_page_t* page, mi_block_t* block);
+#endif
+
+uint8_t*   _mi_segment_page_start(const mi_segment_t* segment, const mi_page_t* page, size_t* page_size); // page start for any page
+void       _mi_abandoned_reclaim_all(mi_heap_t* heap, mi_segments_tld_t* tld);
+void       _mi_abandoned_await_readers(void);
+void       _mi_abandoned_collect(mi_heap_t* heap, bool force, mi_segments_tld_t* tld);
+
+// "page.c"
+void*      _mi_malloc_generic(mi_heap_t* heap, size_t size, bool zero, size_t huge_alignment)  mi_attr_noexcept mi_attr_malloc;
+
+void       _mi_page_retire(mi_page_t* page) mi_attr_noexcept;                  // free the page if there are no other pages with many free blocks
+void       _mi_page_unfull(mi_page_t* page);
+void       _mi_page_free(mi_page_t* page, mi_page_queue_t* pq, bool force);   // free the page
+void       _mi_page_abandon(mi_page_t* page, mi_page_queue_t* pq);            // abandon the page, to be picked up by another thread...
+void       _mi_heap_delayed_free_all(mi_heap_t* heap);
+bool       _mi_heap_delayed_free_partial(mi_heap_t* heap);
+void       _mi_heap_collect_retired(mi_heap_t* heap, bool force);
+
+void       _mi_page_use_delayed_free(mi_page_t* page, mi_delayed_t delay, bool override_never);
+bool       _mi_page_try_use_delayed_free(mi_page_t* page, mi_delayed_t delay, bool override_never);
+size_t     _mi_page_queue_append(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_queue_t* append);
+void       _mi_deferred_free(mi_heap_t* heap, bool force);
+
+void       _mi_page_free_collect(mi_page_t* page,bool force);
+void       _mi_page_reclaim(mi_heap_t* heap, mi_page_t* page);   // callback from segments
+
+size_t     _mi_bin_size(uint8_t bin);           // for stats
+uint8_t    _mi_bin(size_t size);                // for stats
+
+// "heap.c"
+void       _mi_heap_destroy_pages(mi_heap_t* heap);
+void       _mi_heap_collect_abandon(mi_heap_t* heap);
+void       _mi_heap_set_default_direct(mi_heap_t* heap);
+bool       _mi_heap_memid_is_suitable(mi_heap_t* heap, mi_memid_t memid);
+void       _mi_heap_unsafe_destroy_all(void);
+
+// "stats.c"
+void       _mi_stats_done(mi_stats_t* stats);
+mi_msecs_t  _mi_clock_now(void);
+mi_msecs_t  _mi_clock_end(mi_msecs_t start);
+mi_msecs_t  _mi_clock_start(void);
+
+// "alloc.c"
+void*       _mi_page_malloc(mi_heap_t* heap, mi_page_t* page, size_t size, bool zero) mi_attr_noexcept;  // called from `_mi_malloc_generic`
+void*       _mi_heap_malloc_zero(mi_heap_t* heap, size_t size, bool zero) mi_attr_noexcept;
+void*       _mi_heap_malloc_zero_ex(mi_heap_t* heap, size_t size, bool zero, size_t huge_alignment) mi_attr_noexcept;     // called from `_mi_heap_malloc_aligned`
+void*       _mi_heap_realloc_zero(mi_heap_t* heap, void* p, size_t newsize, bool zero) mi_attr_noexcept;
+mi_block_t* _mi_page_ptr_unalign(const mi_segment_t* segment, const mi_page_t* page, const void* p);
+bool        _mi_free_delayed_block(mi_block_t* block);
+void        _mi_free_generic(const mi_segment_t* segment, mi_page_t* page, bool is_local, void* p) mi_attr_noexcept;  // for runtime integration
+void        _mi_padding_shrink(const mi_page_t* page, const mi_block_t* block, const size_t min_size);
+
+// option.c, c primitives
+char        _mi_toupper(char c);
+int         _mi_strnicmp(const char* s, const char* t, size_t n);
+void        _mi_strlcpy(char* dest, const char* src, size_t dest_size);
+void        _mi_strlcat(char* dest, const char* src, size_t dest_size);
+size_t      _mi_strlen(const char* s);
+size_t      _mi_strnlen(const char* s, size_t max_len);
+
+
+#if MI_DEBUG>1
+bool        _mi_page_is_valid(mi_page_t* page);
+#endif
+
+
+// ------------------------------------------------------
+// Branches
+// ------------------------------------------------------
+
+#if defined(__GNUC__) || defined(__clang__)
+#define mi_unlikely(x)     (__builtin_expect(!!(x),false))
+#define mi_likely(x)       (__builtin_expect(!!(x),true))
+#elif (defined(__cplusplus) && (__cplusplus >= 202002L)) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+#define mi_unlikely(x)     (x) [[unlikely]]
+#define mi_likely(x)       (x) [[likely]]
+#else
+#define mi_unlikely(x)     (x)
+#define mi_likely(x)       (x)
+#endif
+
+#ifndef __has_builtin
+#define __has_builtin(x)  0
+#endif
+
+
+/* -----------------------------------------------------------
+  Error codes passed to `_mi_fatal_error`
+  All are recoverable but EFAULT is a serious error and aborts by default in secure mode.
+  For portability define undefined error codes using common Unix codes:
+  <https://www-numi.fnal.gov/offline_software/srt_public_context/WebDocs/Errors/unix_system_errors.html>
+----------------------------------------------------------- */
+#include <errno.h>
+#ifndef EAGAIN         // double free
+#define EAGAIN (11)
+#endif
+#ifndef ENOMEM         // out of memory
+#define ENOMEM (12)
+#endif
+#ifndef EFAULT         // corrupted free-list or meta-data
+#define EFAULT (14)
+#endif
+#ifndef EINVAL         // trying to free an invalid pointer
+#define EINVAL (22)
+#endif
+#ifndef EOVERFLOW      // count*size overflow
+#define EOVERFLOW (75)
+#endif
+
+
+/* -----------------------------------------------------------
+  Inlined definitions
+----------------------------------------------------------- */
+#define MI_UNUSED(x)     (void)(x)
+#if (MI_DEBUG>0)
+#define MI_UNUSED_RELEASE(x)
+#else
+#define MI_UNUSED_RELEASE(x)  MI_UNUSED(x)
+#endif
+
+#define MI_INIT4(x)   x(),x(),x(),x()
+#define MI_INIT8(x)   MI_INIT4(x),MI_INIT4(x)
+#define MI_INIT16(x)  MI_INIT8(x),MI_INIT8(x)
+#define MI_INIT32(x)  MI_INIT16(x),MI_INIT16(x)
+#define MI_INIT64(x)  MI_INIT32(x),MI_INIT32(x)
+#define MI_INIT128(x) MI_INIT64(x),MI_INIT64(x)
+#define MI_INIT256(x) MI_INIT128(x),MI_INIT128(x)
+
+
+#include <string.h>
+// initialize a local variable to zero; use memset as compilers optimize constant sized memset's
+#define _mi_memzero_var(x)  memset(&x,0,sizeof(x))
+
+// Is `x` a power of two? (0 is considered a power of two)
+static inline bool _mi_is_power_of_two(uintptr_t x) {
+  return ((x & (x - 1)) == 0);
+}
+
+// Is a pointer aligned?
+static inline bool _mi_is_aligned(void* p, size_t alignment) {
+  mi_assert_internal(alignment != 0);
+  return (((uintptr_t)p % alignment) == 0);
+}
+
+// Align upwards
+static inline uintptr_t _mi_align_up(uintptr_t sz, size_t alignment) {
+  mi_assert_internal(alignment != 0);
+  uintptr_t mask = alignment - 1;
+  if ((alignment & mask) == 0) {  // power of two?
+    return ((sz + mask) & ~mask);
+  }
+  else {
+    return (((sz + mask)/alignment)*alignment);
+  }
+}
+
+// Align downwards
+static inline uintptr_t _mi_align_down(uintptr_t sz, size_t alignment) {
+  mi_assert_internal(alignment != 0);
+  uintptr_t mask = alignment - 1;
+  if ((alignment & mask) == 0) { // power of two?
+    return (sz & ~mask);
+  }
+  else {
+    return ((sz / alignment) * alignment);
+  }
+}
+
+// Divide upwards: `s <= _mi_divide_up(s,d)*d < s+d`.
+static inline uintptr_t _mi_divide_up(uintptr_t size, size_t divider) {
+  mi_assert_internal(divider != 0);
+  return (divider == 0 ? size : ((size + divider - 1) / divider));
+}
+
+// Is memory zero initialized?
+static inline bool mi_mem_is_zero(const void* p, size_t size) {
+  for (size_t i = 0; i < size; i++) {
+    if (((uint8_t*)p)[i] != 0) return false;
+  }
+  return true;
+}
+
+
+// Align a byte size to a size in _machine words_,
+// i.e. byte size == `wsize*sizeof(void*)`.
+static inline size_t _mi_wsize_from_size(size_t size) {
+  mi_assert_internal(size <= SIZE_MAX - sizeof(uintptr_t));
+  return (size + sizeof(uintptr_t) - 1) / sizeof(uintptr_t);
+}
+
+// Overflow detecting multiply
+#if __has_builtin(__builtin_umul_overflow) || (defined(__GNUC__) && (__GNUC__ >= 5))
+#include <limits.h>      // UINT_MAX, ULONG_MAX
+#if defined(_CLOCK_T)    // for Illumos
+#undef _CLOCK_T
+#endif
+static inline bool mi_mul_overflow(size_t count, size_t size, size_t* total) {
+  #if (SIZE_MAX == ULONG_MAX)
+    return __builtin_umull_overflow(count, size, (unsigned long *)total);
+  #elif (SIZE_MAX == UINT_MAX)
+    return __builtin_umul_overflow(count, size, (unsigned int *)total);
+  #else
+    return __builtin_umulll_overflow(count, size, (unsigned long long *)total);
+  #endif
+}
+#else /* __builtin_umul_overflow is unavailable */
+static inline bool mi_mul_overflow(size_t count, size_t size, size_t* total) {
+  #define MI_MUL_NO_OVERFLOW ((size_t)1 << (4*sizeof(size_t)))  // sqrt(SIZE_MAX)
+  *total = count * size;
+  // note: gcc/clang optimize this to directly check the overflow flag
+  return ((size >= MI_MUL_NO_OVERFLOW || count >= MI_MUL_NO_OVERFLOW) && size > 0 && (SIZE_MAX / size) < count);
+}
+#endif
+
+// Safe multiply `count*size` into `total`; return `true` on overflow.
+static inline bool mi_count_size_overflow(size_t count, size_t size, size_t* total) {
+  if (count==1) {  // quick check for the case where count is one (common for C++ allocators)
+    *total = size;
+    return false;
+  }
+  else if mi_unlikely(mi_mul_overflow(count, size, total)) {
+    #if MI_DEBUG > 0
+    _mi_error_message(EOVERFLOW, "allocation request is too large (%zu * %zu bytes)\n", count, size);
+    #endif
+    *total = SIZE_MAX;
+    return true;
+  }
+  else return false;
+}
+
+
+/*----------------------------------------------------------------------------------------
+  Heap functions
+------------------------------------------------------------------------------------------- */
+
+extern const mi_heap_t _mi_heap_empty;  // read-only empty heap, initial value of the thread local default heap
+
+static inline bool mi_heap_is_backing(const mi_heap_t* heap) {
+  return (heap->tld->heap_backing == heap);
+}
+
+static inline bool mi_heap_is_initialized(mi_heap_t* heap) {
+  mi_assert_internal(heap != NULL);
+  return (heap != &_mi_heap_empty);
+}
+
+static inline uintptr_t _mi_ptr_cookie(const void* p) {
+  extern mi_heap_t _mi_heap_main;
+  mi_assert_internal(_mi_heap_main.cookie != 0);
+  return ((uintptr_t)p ^ _mi_heap_main.cookie);
+}
+
+/* -----------------------------------------------------------
+  Pages
+----------------------------------------------------------- */
+
+static inline mi_page_t* _mi_heap_get_free_small_page(mi_heap_t* heap, size_t size) {
+  mi_assert_internal(size <= (MI_SMALL_SIZE_MAX + MI_PADDING_SIZE));
+  const size_t idx = _mi_wsize_from_size(size);
+  mi_assert_internal(idx < MI_PAGES_DIRECT);
+  return heap->pages_free_direct[idx];
+}
+
+// Segment that contains the pointer
+// Large aligned blocks may be aligned at N*MI_SEGMENT_SIZE (inside a huge segment > MI_SEGMENT_SIZE),
+// and we need align "down" to the segment info which is `MI_SEGMENT_SIZE` bytes before it;
+// therefore we align one byte before `p`.
+static inline mi_segment_t* _mi_ptr_segment(const void* p) {
+  mi_assert_internal(p != NULL);
+  return (mi_segment_t*)(((uintptr_t)p - 1) & ~MI_SEGMENT_MASK);
+}
+
+static inline mi_page_t* mi_slice_to_page(mi_slice_t* s) {
+  mi_assert_internal(s->slice_offset== 0 && s->slice_count > 0);
+  return (mi_page_t*)(s);
+}
+
+static inline mi_slice_t* mi_page_to_slice(mi_page_t* p) {
+  mi_assert_internal(p->slice_offset== 0 && p->slice_count > 0);
+  return (mi_slice_t*)(p);
+}
+
+// Segment belonging to a page
+static inline mi_segment_t* _mi_page_segment(const mi_page_t* page) {
+  mi_segment_t* segment = _mi_ptr_segment(page);
+  mi_assert_internal(segment == NULL || ((mi_slice_t*)page >= segment->slices && (mi_slice_t*)page < segment->slices + segment->slice_entries));
+  return segment;
+}
+
+static inline mi_slice_t* mi_slice_first(const mi_slice_t* slice) {
+  mi_slice_t* start = (mi_slice_t*)((uint8_t*)slice - slice->slice_offset);
+  mi_assert_internal(start >= _mi_ptr_segment(slice)->slices);
+  mi_assert_internal(start->slice_offset == 0);
+  mi_assert_internal(start + start->slice_count > slice);
+  return start;
+}
+
+// Get the page containing the pointer (performance critical as it is called in mi_free)
+static inline mi_page_t* _mi_segment_page_of(const mi_segment_t* segment, const void* p) {
+  mi_assert_internal(p > (void*)segment);
+  ptrdiff_t diff = (uint8_t*)p - (uint8_t*)segment;
+  mi_assert_internal(diff > 0 && diff <= (ptrdiff_t)MI_SEGMENT_SIZE);
+  size_t idx = (size_t)diff >> MI_SEGMENT_SLICE_SHIFT;
+  mi_assert_internal(idx <= segment->slice_entries);
+  mi_slice_t* slice0 = (mi_slice_t*)&segment->slices[idx];
+  mi_slice_t* slice = mi_slice_first(slice0);  // adjust to the block that holds the page data
+  mi_assert_internal(slice->slice_offset == 0);
+  mi_assert_internal(slice >= segment->slices && slice < segment->slices + segment->slice_entries);
+  return mi_slice_to_page(slice);
+}
+
+// Quick page start for initialized pages
+static inline uint8_t* _mi_page_start(const mi_segment_t* segment, const mi_page_t* page, size_t* page_size) {
+  return _mi_segment_page_start(segment, page, page_size);
+}
+
+// Get the page containing the pointer
+static inline mi_page_t* _mi_ptr_page(void* p) {
+  return _mi_segment_page_of(_mi_ptr_segment(p), p);
+}
+
+// Get the block size of a page (special case for huge objects)
+static inline size_t mi_page_block_size(const mi_page_t* page) {
+  const size_t bsize = page->xblock_size;
+  mi_assert_internal(bsize > 0);
+  if mi_likely(bsize < MI_HUGE_BLOCK_SIZE) {
+    return bsize;
+  }
+  else {
+    size_t psize;
+    _mi_segment_page_start(_mi_page_segment(page), page, &psize);
+    return psize;
+  }
+}
+
+static inline bool mi_page_is_huge(const mi_page_t* page) {
+  return (_mi_page_segment(page)->kind == MI_SEGMENT_HUGE);
+}
+
+// Get the usable block size of a page without fixed padding.
+// This may still include internal padding due to alignment and rounding up size classes.
+static inline size_t mi_page_usable_block_size(const mi_page_t* page) {
+  return mi_page_block_size(page) - MI_PADDING_SIZE;
+}
+
+// size of a segment
+static inline size_t mi_segment_size(mi_segment_t* segment) {
+  return segment->segment_slices * MI_SEGMENT_SLICE_SIZE;
+}
+
+static inline uint8_t* mi_segment_end(mi_segment_t* segment) {
+  return (uint8_t*)segment + mi_segment_size(segment);
+}
+
+// Thread free access
+static inline mi_block_t* mi_page_thread_free(const mi_page_t* page) {
+  return (mi_block_t*)(mi_atomic_load_relaxed(&((mi_page_t*)page)->xthread_free) & ~3);
+}
+
+static inline mi_delayed_t mi_page_thread_free_flag(const mi_page_t* page) {
+  return (mi_delayed_t)(mi_atomic_load_relaxed(&((mi_page_t*)page)->xthread_free) & 3);
+}
+
+// Heap access
+static inline mi_heap_t* mi_page_heap(const mi_page_t* page) {
+  return (mi_heap_t*)(mi_atomic_load_relaxed(&((mi_page_t*)page)->xheap));
+}
+
+static inline void mi_page_set_heap(mi_page_t* page, mi_heap_t* heap) {
+  mi_assert_internal(mi_page_thread_free_flag(page) != MI_DELAYED_FREEING);
+  mi_atomic_store_release(&page->xheap,(uintptr_t)heap);
+}
+
+// Thread free flag helpers
+static inline mi_block_t* mi_tf_block(mi_thread_free_t tf) {
+  return (mi_block_t*)(tf & ~0x03);
+}
+static inline mi_delayed_t mi_tf_delayed(mi_thread_free_t tf) {
+  return (mi_delayed_t)(tf & 0x03);
+}
+static inline mi_thread_free_t mi_tf_make(mi_block_t* block, mi_delayed_t delayed) {
+  return (mi_thread_free_t)((uintptr_t)block | (uintptr_t)delayed);
+}
+static inline mi_thread_free_t mi_tf_set_delayed(mi_thread_free_t tf, mi_delayed_t delayed) {
+  return mi_tf_make(mi_tf_block(tf),delayed);
+}
+static inline mi_thread_free_t mi_tf_set_block(mi_thread_free_t tf, mi_block_t* block) {
+  return mi_tf_make(block, mi_tf_delayed(tf));
+}
+
+// are all blocks in a page freed?
+// note: needs up-to-date used count, (as the `xthread_free` list may not be empty). see `_mi_page_collect_free`.
+static inline bool mi_page_all_free(const mi_page_t* page) {
+  mi_assert_internal(page != NULL);
+  return (page->used == 0);
+}
+
+// are there any available blocks?
+static inline bool mi_page_has_any_available(const mi_page_t* page) {
+  mi_assert_internal(page != NULL && page->reserved > 0);
+  return (page->used < page->reserved || (mi_page_thread_free(page) != NULL));
+}
+
+// are there immediately available blocks, i.e. blocks available on the free list.
+static inline bool mi_page_immediate_available(const mi_page_t* page) {
+  mi_assert_internal(page != NULL);
+  return (page->free != NULL);
+}
+
+// is more than 7/8th of a page in use?
+static inline bool mi_page_mostly_used(const mi_page_t* page) {
+  if (page==NULL) return true;
+  uint16_t frac = page->reserved / 8U;
+  return (page->reserved - page->used <= frac);
+}
+
+static inline mi_page_queue_t* mi_page_queue(const mi_heap_t* heap, size_t size) {
+  return &((mi_heap_t*)heap)->pages[_mi_bin(size)];
+}
+
+
+
+//-----------------------------------------------------------
+// Page flags
+//-----------------------------------------------------------
+static inline bool mi_page_is_in_full(const mi_page_t* page) {
+  return page->flags.x.in_full;
+}
+
+static inline void mi_page_set_in_full(mi_page_t* page, bool in_full) {
+  page->flags.x.in_full = in_full;
+}
+
+static inline bool mi_page_has_aligned(const mi_page_t* page) {
+  return page->flags.x.has_aligned;
+}
+
+static inline void mi_page_set_has_aligned(mi_page_t* page, bool has_aligned) {
+  page->flags.x.has_aligned = has_aligned;
+}
+
+
+/* -------------------------------------------------------------------
+Encoding/Decoding the free list next pointers
+
+This is to protect against buffer overflow exploits where the
+free list is mutated. Many hardened allocators xor the next pointer `p`
+with a secret key `k1`, as `p^k1`. This prevents overwriting with known
+values but might be still too weak: if the attacker can guess
+the pointer `p` this  can reveal `k1` (since `p^k1^p == k1`).
+Moreover, if multiple blocks can be read as well, the attacker can
+xor both as `(p1^k1) ^ (p2^k1) == p1^p2` which may reveal a lot
+about the pointers (and subsequently `k1`).
+
+Instead mimalloc uses an extra key `k2` and encodes as `((p^k2)<<<k1)+k1`.
+Since these operations are not associative, the above approaches do not
+work so well any more even if the `p` can be guesstimated. For example,
+for the read case we can subtract two entries to discard the `+k1` term,
+but that leads to `((p1^k2)<<<k1) - ((p2^k2)<<<k1)` at best.
+We include the left-rotation since xor and addition are otherwise linear
+in the lowest bit. Finally, both keys are unique per page which reduces
+the re-use of keys by a large factor.
+
+We also pass a separate `null` value to be used as `NULL` or otherwise
+`(k2<<<k1)+k1` would appear (too) often as a sentinel value.
+------------------------------------------------------------------- */
+
+static inline bool mi_is_in_same_segment(const void* p, const void* q) {
+  return (_mi_ptr_segment(p) == _mi_ptr_segment(q));
+}
+
+static inline bool mi_is_in_same_page(const void* p, const void* q) {
+  mi_segment_t* segment = _mi_ptr_segment(p);
+  if (_mi_ptr_segment(q) != segment) return false;
+  // assume q may be invalid // return (_mi_segment_page_of(segment, p) == _mi_segment_page_of(segment, q));
+  mi_page_t* page = _mi_segment_page_of(segment, p);
+  size_t psize;
+  uint8_t* start = _mi_segment_page_start(segment, page, &psize);
+  return (start <= (uint8_t*)q && (uint8_t*)q < start + psize);
+}
+
+static inline uintptr_t mi_rotl(uintptr_t x, uintptr_t shift) {
+  shift %= MI_INTPTR_BITS;
+  return (shift==0 ? x : ((x << shift) | (x >> (MI_INTPTR_BITS - shift))));
+}
+static inline uintptr_t mi_rotr(uintptr_t x, uintptr_t shift) {
+  shift %= MI_INTPTR_BITS;
+  return (shift==0 ? x : ((x >> shift) | (x << (MI_INTPTR_BITS - shift))));
+}
+
+static inline void* mi_ptr_decode(const void* null, const mi_encoded_t x, const uintptr_t* keys) {
+  void* p = (void*)(mi_rotr(x - keys[0], keys[0]) ^ keys[1]);
+  return (p==null ? NULL : p);
+}
+
+static inline mi_encoded_t mi_ptr_encode(const void* null, const void* p, const uintptr_t* keys) {
+  uintptr_t x = (uintptr_t)(p==NULL ? null : p);
+  return mi_rotl(x ^ keys[1], keys[0]) + keys[0];
+}
+
+static inline mi_block_t* mi_block_nextx( const void* null, const mi_block_t* block, const uintptr_t* keys ) {
+  mi_track_mem_defined(block,sizeof(mi_block_t));
+  mi_block_t* next;
+  #ifdef MI_ENCODE_FREELIST
+  next = (mi_block_t*)mi_ptr_decode(null, block->next, keys);
+  #else
+  MI_UNUSED(keys); MI_UNUSED(null);
+  next = (mi_block_t*)block->next;
+  #endif
+  mi_track_mem_noaccess(block,sizeof(mi_block_t));
+  return next;
+}
+
+static inline void mi_block_set_nextx(const void* null, mi_block_t* block, const mi_block_t* next, const uintptr_t* keys) {
+  mi_track_mem_undefined(block,sizeof(mi_block_t));
+  #ifdef MI_ENCODE_FREELIST
+  block->next = mi_ptr_encode(null, next, keys);
+  #else
+  MI_UNUSED(keys); MI_UNUSED(null);
+  block->next = (mi_encoded_t)next;
+  #endif
+  mi_track_mem_noaccess(block,sizeof(mi_block_t));
+}
+
+static inline mi_block_t* mi_block_next(const mi_page_t* page, const mi_block_t* block) {
+  #ifdef MI_ENCODE_FREELIST
+  mi_block_t* next = mi_block_nextx(page,block,page->keys);
+  // check for free list corruption: is `next` at least in the same page?
+  // TODO: check if `next` is `page->block_size` aligned?
+  if mi_unlikely(next!=NULL && !mi_is_in_same_page(block, next)) {
+    _mi_error_message(EFAULT, "corrupted free list entry of size %zub at %p: value 0x%zx\n", mi_page_block_size(page), block, (uintptr_t)next);
+    next = NULL;
+  }
+  return next;
+  #else
+  MI_UNUSED(page);
+  return mi_block_nextx(page,block,NULL);
+  #endif
+}
+
+static inline void mi_block_set_next(const mi_page_t* page, mi_block_t* block, const mi_block_t* next) {
+  #ifdef MI_ENCODE_FREELIST
+  mi_block_set_nextx(page,block,next, page->keys);
+  #else
+  MI_UNUSED(page);
+  mi_block_set_nextx(page,block,next,NULL);
+  #endif
+}
+
+
+// -------------------------------------------------------------------
+// commit mask
+// -------------------------------------------------------------------
+
+static inline void mi_commit_mask_create_empty(mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    cm->mask[i] = 0;
+  }
+}
+
+static inline void mi_commit_mask_create_full(mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    cm->mask[i] = ~((size_t)0);
+  }
+}
+
+static inline bool mi_commit_mask_is_empty(const mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    if (cm->mask[i] != 0) return false;
+  }
+  return true;
+}
+
+static inline bool mi_commit_mask_is_full(const mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    if (cm->mask[i] != ~((size_t)0)) return false;
+  }
+  return true;
+}
+
+// defined in `segment.c`:
+size_t _mi_commit_mask_committed_size(const mi_commit_mask_t* cm, size_t total);
+size_t _mi_commit_mask_next_run(const mi_commit_mask_t* cm, size_t* idx);
+
+#define mi_commit_mask_foreach(cm,idx,count) \
+  idx = 0; \
+  while ((count = _mi_commit_mask_next_run(cm,&idx)) > 0) {
+
+#define mi_commit_mask_foreach_end() \
+    idx += count; \
+  }
+
+
+
+/* -----------------------------------------------------------
+  memory id's
+----------------------------------------------------------- */
+
+static inline mi_memid_t _mi_memid_create(mi_memkind_t memkind) {
+  mi_memid_t memid;
+  _mi_memzero_var(memid);
+  memid.memkind = memkind;
+  return memid;
+}
+
+static inline mi_memid_t _mi_memid_none(void) {
+  return _mi_memid_create(MI_MEM_NONE);
+}
+
+static inline mi_memid_t _mi_memid_create_os(bool committed, bool is_zero, bool is_large) {
+  mi_memid_t memid = _mi_memid_create(MI_MEM_OS);
+  memid.initially_committed = committed;
+  memid.initially_zero = is_zero;
+  memid.is_pinned = is_large;
+  return memid;
+}
+
+
+// -------------------------------------------------------------------
+// Fast "random" shuffle
+// -------------------------------------------------------------------
+
+static inline uintptr_t _mi_random_shuffle(uintptr_t x) {
+  if (x==0) { x = 17; }   // ensure we don't get stuck in generating zeros
+#if (MI_INTPTR_SIZE==8)
+  // by Sebastiano Vigna, see: <http://xoshiro.di.unimi.it/splitmix64.c>
+  x ^= x >> 30;
+  x *= 0xbf58476d1ce4e5b9UL;
+  x ^= x >> 27;
+  x *= 0x94d049bb133111ebUL;
+  x ^= x >> 31;
+#elif (MI_INTPTR_SIZE==4)
+  // by Chris Wellons, see: <https://nullprogram.com/blog/2018/07/31/>
+  x ^= x >> 16;
+  x *= 0x7feb352dUL;
+  x ^= x >> 15;
+  x *= 0x846ca68bUL;
+  x ^= x >> 16;
+#endif
+  return x;
+}
+
+// -------------------------------------------------------------------
+// Optimize numa node access for the common case (= one node)
+// -------------------------------------------------------------------
+
+int    _mi_os_numa_node_get(mi_os_tld_t* tld);
+size_t _mi_os_numa_node_count_get(void);
+
+extern _Atomic(size_t) _mi_numa_node_count;
+static inline int _mi_os_numa_node(mi_os_tld_t* tld) {
+  if mi_likely(mi_atomic_load_relaxed(&_mi_numa_node_count) == 1) { return 0; }
+  else return _mi_os_numa_node_get(tld);
+}
+static inline size_t _mi_os_numa_node_count(void) {
+  const size_t count = mi_atomic_load_relaxed(&_mi_numa_node_count);
+  if mi_likely(count > 0) { return count; }
+  else return _mi_os_numa_node_count_get();
+}
+
+
+
+// -----------------------------------------------------------------------
+// Count bits: trailing or leading zeros (with MI_INTPTR_BITS on all zero)
+// -----------------------------------------------------------------------
+
+#if defined(__GNUC__)
+
+#include <limits.h>       // LONG_MAX
+#define MI_HAVE_FAST_BITSCAN
+static inline size_t mi_clz(uintptr_t x) {
+  if (x==0) return MI_INTPTR_BITS;
+#if (INTPTR_MAX == LONG_MAX)
+  return __builtin_clzl(x);
+#else
+  return __builtin_clzll(x);
+#endif
+}
+static inline size_t mi_ctz(uintptr_t x) {
+  if (x==0) return MI_INTPTR_BITS;
+#if (INTPTR_MAX == LONG_MAX)
+  return __builtin_ctzl(x);
+#else
+  return __builtin_ctzll(x);
+#endif
+}
+
+#elif defined(_MSC_VER)
+
+#include <limits.h>       // LONG_MAX
+#include <intrin.h>       // BitScanReverse64
+#define MI_HAVE_FAST_BITSCAN
+static inline size_t mi_clz(uintptr_t x) {
+  if (x==0) return MI_INTPTR_BITS;
+  unsigned long idx;
+#if (INTPTR_MAX == LONG_MAX)
+  _BitScanReverse(&idx, x);
+#else
+  _BitScanReverse64(&idx, x);
+#endif
+  return ((MI_INTPTR_BITS - 1) - idx);
+}
+static inline size_t mi_ctz(uintptr_t x) {
+  if (x==0) return MI_INTPTR_BITS;
+  unsigned long idx;
+#if (INTPTR_MAX == LONG_MAX)
+  _BitScanForward(&idx, x);
+#else
+  _BitScanForward64(&idx, x);
+#endif
+  return idx;
+}
+
+#else
+static inline size_t mi_ctz32(uint32_t x) {
+  // de Bruijn multiplication, see <http://supertech.csail.mit.edu/papers/debruijn.pdf>
+  static const unsigned char debruijn[32] = {
+    0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
+    31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
+  };
+  if (x==0) return 32;
+  return debruijn[((x & -(int32_t)x) * 0x077CB531UL) >> 27];
+}
+static inline size_t mi_clz32(uint32_t x) {
+  // de Bruijn multiplication, see <http://supertech.csail.mit.edu/papers/debruijn.pdf>
+  static const uint8_t debruijn[32] = {
+    31, 22, 30, 21, 18, 10, 29, 2, 20, 17, 15, 13, 9, 6, 28, 1,
+    23, 19, 11, 3, 16, 14, 7, 24, 12, 4, 8, 25, 5, 26, 27, 0
+  };
+  if (x==0) return 32;
+  x |= x >> 1;
+  x |= x >> 2;
+  x |= x >> 4;
+  x |= x >> 8;
+  x |= x >> 16;
+  return debruijn[(uint32_t)(x * 0x07C4ACDDUL) >> 27];
+}
+
+static inline size_t mi_clz(uintptr_t x) {
+  if (x==0) return MI_INTPTR_BITS;
+#if (MI_INTPTR_BITS <= 32)
+  return mi_clz32((uint32_t)x);
+#else
+  size_t count = mi_clz32((uint32_t)(x >> 32));
+  if (count < 32) return count;
+  return (32 + mi_clz32((uint32_t)x));
+#endif
+}
+static inline size_t mi_ctz(uintptr_t x) {
+  if (x==0) return MI_INTPTR_BITS;
+#if (MI_INTPTR_BITS <= 32)
+  return mi_ctz32((uint32_t)x);
+#else
+  size_t count = mi_ctz32((uint32_t)x);
+  if (count < 32) return count;
+  return (32 + mi_ctz32((uint32_t)(x>>32)));
+#endif
+}
+
+#endif
+
+// "bit scan reverse": Return index of the highest bit (or MI_INTPTR_BITS if `x` is zero)
+static inline size_t mi_bsr(uintptr_t x) {
+  return (x==0 ? MI_INTPTR_BITS : MI_INTPTR_BITS - 1 - mi_clz(x));
+}
+
+
+// ---------------------------------------------------------------------------------
+// Provide our own `_mi_memcpy` for potential performance optimizations.
+//
+// For now, only on Windows with msvc/clang-cl we optimize to `rep movsb` if
+// we happen to run on x86/x64 cpu's that have "fast short rep movsb" (FSRM) support
+// (AMD Zen3+ (~2020) or Intel Ice Lake+ (~2017). See also issue #201 and pr #253.
+// ---------------------------------------------------------------------------------
+
+#if !MI_TRACK_ENABLED && defined(_WIN32) && (defined(_M_IX86) || defined(_M_X64))
+#include <intrin.h>
+extern bool _mi_cpu_has_fsrm;
+static inline void _mi_memcpy(void* dst, const void* src, size_t n) {
+  if (_mi_cpu_has_fsrm) {
+    __movsb((unsigned char*)dst, (const unsigned char*)src, n);
+  }
+  else {
+    memcpy(dst, src, n);
+  }
+}
+static inline void _mi_memzero(void* dst, size_t n) {
+  if (_mi_cpu_has_fsrm) {
+    __stosb((unsigned char*)dst, 0, n);
+  }
+  else {
+    memset(dst, 0, n);
+  }
+}
+#else
+static inline void _mi_memcpy(void* dst, const void* src, size_t n) {
+  memcpy(dst, src, n);
+}
+static inline void _mi_memzero(void* dst, size_t n) {
+  memset(dst, 0, n);
+}
+#endif
+
+// -------------------------------------------------------------------------------
+// The `_mi_memcpy_aligned` can be used if the pointers are machine-word aligned
+// This is used for example in `mi_realloc`.
+// -------------------------------------------------------------------------------
+
+#if (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__)
+// On GCC/CLang we provide a hint that the pointers are word aligned.
+static inline void _mi_memcpy_aligned(void* dst, const void* src, size_t n) {
+  mi_assert_internal(((uintptr_t)dst % MI_INTPTR_SIZE == 0) && ((uintptr_t)src % MI_INTPTR_SIZE == 0));
+  void* adst = __builtin_assume_aligned(dst, MI_INTPTR_SIZE);
+  const void* asrc = __builtin_assume_aligned(src, MI_INTPTR_SIZE);
+  _mi_memcpy(adst, asrc, n);
+}
+
+static inline void _mi_memzero_aligned(void* dst, size_t n) {
+  mi_assert_internal((uintptr_t)dst % MI_INTPTR_SIZE == 0);
+  void* adst = __builtin_assume_aligned(dst, MI_INTPTR_SIZE);
+  _mi_memzero(adst, n);
+}
+#else
+// Default fallback on `_mi_memcpy`
+static inline void _mi_memcpy_aligned(void* dst, const void* src, size_t n) {
+  mi_assert_internal(((uintptr_t)dst % MI_INTPTR_SIZE == 0) && ((uintptr_t)src % MI_INTPTR_SIZE == 0));
+  _mi_memcpy(dst, src, n);
+}
+
+static inline void _mi_memzero_aligned(void* dst, size_t n) {
+  mi_assert_internal((uintptr_t)dst % MI_INTPTR_SIZE == 0);
+  _mi_memzero(dst, n);
+}
+#endif
+
+
+#endif
diff --git a/Include/internal/mimalloc/mimalloc/prim.h b/Include/internal/mimalloc/mimalloc/prim.h
new file mode 100644
index 00000000000000..4b9e4dc4194d77
--- /dev/null
+++ b/Include/internal/mimalloc/mimalloc/prim.h
@@ -0,0 +1,323 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#pragma once
+#ifndef MIMALLOC_PRIM_H
+#define MIMALLOC_PRIM_H
+
+
+// --------------------------------------------------------------------------
+// This file specifies the primitive portability API.
+// Each OS/host needs to implement these primitives, see `src/prim`
+// for implementations on Window, macOS, WASI, and Linux/Unix.
+//
+// note: on all primitive functions, we always have result parameters != NUL, and:
+//  addr != NULL and page aligned
+//  size > 0     and page aligned
+//  return value is an error code an int where 0 is success.
+// --------------------------------------------------------------------------
+
+// OS memory configuration
+typedef struct mi_os_mem_config_s {
+  size_t  page_size;            // 4KiB
+  size_t  large_page_size;      // 2MiB
+  size_t  alloc_granularity;    // smallest allocation size (on Windows 64KiB)
+  bool    has_overcommit;       // can we reserve more memory than can be actually committed?
+  bool    must_free_whole;      // must allocated blocks be freed as a whole (false for mmap, true for VirtualAlloc)
+  bool    has_virtual_reserve;  // supports virtual address space reservation? (if true we can reserve virtual address space without using commit or physical memory)
+} mi_os_mem_config_t;
+
+// Initialize
+void _mi_prim_mem_init( mi_os_mem_config_t* config );
+
+// Free OS memory
+int _mi_prim_free(void* addr, size_t size );
+
+// Allocate OS memory. Return NULL on error.
+// The `try_alignment` is just a hint and the returned pointer does not have to be aligned.
+// If `commit` is false, the virtual memory range only needs to be reserved (with no access)
+// which will later be committed explicitly using `_mi_prim_commit`.
+// `is_zero` is set to true if the memory was zero initialized (as on most OS's)
+// pre: !commit => !allow_large
+//      try_alignment >= _mi_os_page_size() and a power of 2
+int _mi_prim_alloc(size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, void** addr);
+
+// Commit memory. Returns error code or 0 on success.
+// For example, on Linux this would make the memory PROT_READ|PROT_WRITE.
+// `is_zero` is set to true if the memory was zero initialized (e.g. on Windows)
+int _mi_prim_commit(void* addr, size_t size, bool* is_zero);
+
+// Decommit memory. Returns error code or 0 on success. The `needs_recommit` result is true
+// if the memory would need to be re-committed. For example, on Windows this is always true,
+// but on Linux we could use MADV_DONTNEED to decommit which does not need a recommit.
+// pre: needs_recommit != NULL
+int _mi_prim_decommit(void* addr, size_t size, bool* needs_recommit);
+
+// Reset memory. The range keeps being accessible but the content might be reset.
+// Returns error code or 0 on success.
+int _mi_prim_reset(void* addr, size_t size);
+
+// Protect memory. Returns error code or 0 on success.
+int _mi_prim_protect(void* addr, size_t size, bool protect);
+
+// Allocate huge (1GiB) pages possibly associated with a NUMA node.
+// `is_zero` is set to true if the memory was zero initialized (as on most OS's)
+// pre: size > 0  and a multiple of 1GiB.
+//      numa_node is either negative (don't care), or a numa node number.
+int _mi_prim_alloc_huge_os_pages(void* hint_addr, size_t size, int numa_node, bool* is_zero, void** addr);
+
+// Return the current NUMA node
+size_t _mi_prim_numa_node(void);
+
+// Return the number of logical NUMA nodes
+size_t _mi_prim_numa_node_count(void);
+
+// Clock ticks
+mi_msecs_t _mi_prim_clock_now(void);
+
+// Return process information (only for statistics)
+typedef struct mi_process_info_s {
+  mi_msecs_t  elapsed;
+  mi_msecs_t  utime;
+  mi_msecs_t  stime;
+  size_t      current_rss;
+  size_t      peak_rss;
+  size_t      current_commit;
+  size_t      peak_commit;
+  size_t      page_faults;
+} mi_process_info_t;
+
+void _mi_prim_process_info(mi_process_info_t* pinfo);
+
+// Default stderr output. (only for warnings etc. with verbose enabled)
+// msg != NULL && _mi_strlen(msg) > 0
+void _mi_prim_out_stderr( const char* msg );
+
+// Get an environment variable. (only for options)
+// name != NULL, result != NULL, result_size >= 64
+bool _mi_prim_getenv(const char* name, char* result, size_t result_size);
+
+
+// Fill a buffer with strong randomness; return `false` on error or if
+// there is no strong randomization available.
+bool _mi_prim_random_buf(void* buf, size_t buf_len);
+
+// Called on the first thread start, and should ensure `_mi_thread_done` is called on thread termination.
+void _mi_prim_thread_init_auto_done(void);
+
+// Called on process exit and may take action to clean up resources associated with the thread auto done.
+void _mi_prim_thread_done_auto_done(void);
+
+// Called when the default heap for a thread changes
+void _mi_prim_thread_associate_default_heap(mi_heap_t* heap);
+
+
+//-------------------------------------------------------------------
+// Thread id: `_mi_prim_thread_id()`
+//
+// Getting the thread id should be performant as it is called in the
+// fast path of `_mi_free` and we specialize for various platforms as
+// inlined definitions. Regular code should call `init.c:_mi_thread_id()`.
+// We only require _mi_prim_thread_id() to return a unique id
+// for each thread (unequal to zero).
+//-------------------------------------------------------------------
+
+// defined in `init.c`; do not use these directly
+extern mi_decl_thread mi_heap_t* _mi_heap_default;  // default heap to allocate from
+extern bool _mi_process_is_initialized;             // has mi_process_init been called?
+
+static inline mi_threadid_t _mi_prim_thread_id(void) mi_attr_noexcept;
+
+#if defined(_WIN32)
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+static inline mi_threadid_t _mi_prim_thread_id(void) mi_attr_noexcept {
+  // Windows: works on Intel and ARM in both 32- and 64-bit
+  return (uintptr_t)NtCurrentTeb();
+}
+
+// We use assembly for a fast thread id on the main platforms. The TLS layout depends on
+// both the OS and libc implementation so we use specific tests for each main platform.
+// If you test on another platform and it works please send a PR :-)
+// see also https://akkadia.org/drepper/tls.pdf for more info on the TLS register.
+#elif defined(__GNUC__) && ( \
+           (defined(__GLIBC__)   && (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))) \
+        || (defined(__APPLE__)   && (defined(__x86_64__) || defined(__aarch64__))) \
+        || (defined(__BIONIC__)  && (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))) \
+        || (defined(__FreeBSD__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__))) \
+        || (defined(__OpenBSD__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__))) \
+      )
+
+static inline void* mi_prim_tls_slot(size_t slot) mi_attr_noexcept {
+  void* res;
+  const size_t ofs = (slot*sizeof(void*));
+  #if defined(__i386__)
+    __asm__("movl %%gs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : );  // x86 32-bit always uses GS
+  #elif defined(__APPLE__) && defined(__x86_64__)
+    __asm__("movq %%gs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : );  // x86_64 macOSX uses GS
+  #elif defined(__x86_64__) && (MI_INTPTR_SIZE==4)
+    __asm__("movl %%fs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : );  // x32 ABI
+  #elif defined(__x86_64__)
+    __asm__("movq %%fs:%1, %0" : "=r" (res) : "m" (*((void**)ofs)) : );  // x86_64 Linux, BSD uses FS
+  #elif defined(__arm__)
+    void** tcb; MI_UNUSED(ofs);
+    __asm__ volatile ("mrc p15, 0, %0, c13, c0, 3\nbic %0, %0, #3" : "=r" (tcb));
+    res = tcb[slot];
+  #elif defined(__aarch64__)
+    void** tcb; MI_UNUSED(ofs);
+    #if defined(__APPLE__) // M1, issue #343
+    __asm__ volatile ("mrs %0, tpidrro_el0\nbic %0, %0, #7" : "=r" (tcb));
+    #else
+    __asm__ volatile ("mrs %0, tpidr_el0" : "=r" (tcb));
+    #endif
+    res = tcb[slot];
+  #endif
+  return res;
+}
+
+// setting a tls slot is only used on macOS for now
+static inline void mi_prim_tls_slot_set(size_t slot, void* value) mi_attr_noexcept {
+  const size_t ofs = (slot*sizeof(void*));
+  #if defined(__i386__)
+    __asm__("movl %1,%%gs:%0" : "=m" (*((void**)ofs)) : "rn" (value) : );  // 32-bit always uses GS
+  #elif defined(__APPLE__) && defined(__x86_64__)
+    __asm__("movq %1,%%gs:%0" : "=m" (*((void**)ofs)) : "rn" (value) : );  // x86_64 macOS uses GS
+  #elif defined(__x86_64__) && (MI_INTPTR_SIZE==4)
+    __asm__("movl %1,%%fs:%0" : "=m" (*((void**)ofs)) : "rn" (value) : );  // x32 ABI
+  #elif defined(__x86_64__)
+    __asm__("movq %1,%%fs:%0" : "=m" (*((void**)ofs)) : "rn" (value) : );  // x86_64 Linux, BSD uses FS
+  #elif defined(__arm__)
+    void** tcb; MI_UNUSED(ofs);
+    __asm__ volatile ("mrc p15, 0, %0, c13, c0, 3\nbic %0, %0, #3" : "=r" (tcb));
+    tcb[slot] = value;
+  #elif defined(__aarch64__)
+    void** tcb; MI_UNUSED(ofs);
+    #if defined(__APPLE__) // M1, issue #343
+    __asm__ volatile ("mrs %0, tpidrro_el0\nbic %0, %0, #7" : "=r" (tcb));
+    #else
+    __asm__ volatile ("mrs %0, tpidr_el0" : "=r" (tcb));
+    #endif
+    tcb[slot] = value;
+  #endif
+}
+
+static inline mi_threadid_t _mi_prim_thread_id(void) mi_attr_noexcept {
+  #if defined(__BIONIC__)
+    // issue #384, #495: on the Bionic libc (Android), slot 1 is the thread id
+    // see: https://github.com/aosp-mirror/platform_bionic/blob/c44b1d0676ded732df4b3b21c5f798eacae93228/libc/platform/bionic/tls_defines.h#L86
+    return (uintptr_t)mi_prim_tls_slot(1);
+  #else
+    // in all our other targets, slot 0 is the thread id
+    // glibc: https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=sysdeps/x86_64/nptl/tls.h
+    // apple: https://github.com/apple/darwin-xnu/blob/main/libsyscall/os/tsd.h#L36
+    return (uintptr_t)mi_prim_tls_slot(0);
+  #endif
+}
+
+#else
+
+// otherwise use portable C, taking the address of a thread local variable (this is still very fast on most platforms).
+static inline mi_threadid_t _mi_prim_thread_id(void) mi_attr_noexcept {
+  return (uintptr_t)&_mi_heap_default;
+}
+
+#endif
+
+
+
+/* ----------------------------------------------------------------------------------------
+The thread local default heap: `_mi_prim_get_default_heap()`
+This is inlined here as it is on the fast path for allocation functions.
+
+On most platforms (Windows, Linux, FreeBSD, NetBSD, etc), this just returns a
+__thread local variable (`_mi_heap_default`). With the initial-exec TLS model this ensures
+that the storage will always be available (allocated on the thread stacks).
+
+On some platforms though we cannot use that when overriding `malloc` since the underlying
+TLS implementation (or the loader) will call itself `malloc` on a first access and recurse.
+We try to circumvent this in an efficient way:
+- macOSX : we use an unused TLS slot from the OS allocated slots (MI_TLS_SLOT). On OSX, the
+           loader itself calls `malloc` even before the modules are initialized.
+- OpenBSD: we use an unused slot from the pthread block (MI_TLS_PTHREAD_SLOT_OFS).
+- DragonFly: defaults are working but seem slow compared to freeBSD (see PR #323)
+------------------------------------------------------------------------------------------- */
+
+static inline mi_heap_t* mi_prim_get_default_heap(void);
+
+#if defined(MI_MALLOC_OVERRIDE)
+#if defined(__APPLE__) // macOS
+  #define MI_TLS_SLOT               89  // seems unused?
+  // #define MI_TLS_RECURSE_GUARD 1
+  // other possible unused ones are 9, 29, __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY4 (94), __PTK_FRAMEWORK_GC_KEY9 (112) and __PTK_FRAMEWORK_OLDGC_KEY9 (89)
+  // see <https://github.com/rweichler/substrate/blob/master/include/pthread_machdep.h>
+#elif defined(__OpenBSD__)
+  // use end bytes of a name; goes wrong if anyone uses names > 23 characters (ptrhread specifies 16)
+  // see <https://github.com/openbsd/src/blob/master/lib/libc/include/thread_private.h#L371>
+  #define MI_TLS_PTHREAD_SLOT_OFS   (6*sizeof(int) + 4*sizeof(void*) + 24)
+  // #elif defined(__DragonFly__)
+  // #warning "mimalloc is not working correctly on DragonFly yet."
+  // #define MI_TLS_PTHREAD_SLOT_OFS   (4 + 1*sizeof(void*))  // offset `uniqueid` (also used by gdb?) <https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/lib/libthread_xu/thread/thr_private.h#L458>
+#elif defined(__ANDROID__)
+  // See issue #381
+  #define MI_TLS_PTHREAD
+#endif
+#endif
+
+
+#if defined(MI_TLS_SLOT)
+
+static inline mi_heap_t* mi_prim_get_default_heap(void) {
+  mi_heap_t* heap = (mi_heap_t*)mi_prim_tls_slot(MI_TLS_SLOT);
+  if mi_unlikely(heap == NULL) {
+    #ifdef __GNUC__
+    __asm(""); // prevent conditional load of the address of _mi_heap_empty
+    #endif
+    heap = (mi_heap_t*)&_mi_heap_empty;
+  }
+  return heap;
+}
+
+#elif defined(MI_TLS_PTHREAD_SLOT_OFS)
+
+static inline mi_heap_t** mi_prim_tls_pthread_heap_slot(void) {
+  pthread_t self = pthread_self();
+  #if defined(__DragonFly__)
+  if (self==NULL) return NULL;
+  #endif
+  return (mi_heap_t**)((uint8_t*)self + MI_TLS_PTHREAD_SLOT_OFS);
+}
+
+static inline mi_heap_t* mi_prim_get_default_heap(void) {
+  mi_heap_t** pheap = mi_prim_tls_pthread_heap_slot();
+  if mi_unlikely(pheap == NULL) return _mi_heap_main_get();
+  mi_heap_t* heap = *pheap;
+  if mi_unlikely(heap == NULL) return (mi_heap_t*)&_mi_heap_empty;
+  return heap;
+}
+
+#elif defined(MI_TLS_PTHREAD)
+
+extern pthread_key_t _mi_heap_default_key;
+static inline mi_heap_t* mi_prim_get_default_heap(void) {
+  mi_heap_t* heap = (mi_unlikely(_mi_heap_default_key == (pthread_key_t)(-1)) ? _mi_heap_main_get() : (mi_heap_t*)pthread_getspecific(_mi_heap_default_key));
+  return (mi_unlikely(heap == NULL) ? (mi_heap_t*)&_mi_heap_empty : heap);
+}
+
+#else // default using a thread local variable; used on most platforms.
+
+static inline mi_heap_t* mi_prim_get_default_heap(void) {
+  #if defined(MI_TLS_RECURSE_GUARD)
+  if (mi_unlikely(!_mi_process_is_initialized)) return _mi_heap_main_get();
+  #endif
+  return _mi_heap_default;
+}
+
+#endif  // mi_prim_get_default_heap()
+
+
+
+#endif  // MIMALLOC_PRIM_H
diff --git a/Include/internal/mimalloc/mimalloc/track.h b/Include/internal/mimalloc/mimalloc/track.h
new file mode 100644
index 00000000000000..fa1a048d846a9c
--- /dev/null
+++ b/Include/internal/mimalloc/mimalloc/track.h
@@ -0,0 +1,147 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#pragma once
+#ifndef MIMALLOC_TRACK_H
+#define MIMALLOC_TRACK_H
+
+/* ------------------------------------------------------------------------------------------------------
+Track memory ranges with macros for tools like Valgrind address sanitizer, or other memory checkers.
+These can be defined for tracking allocation:
+
+  #define mi_track_malloc_size(p,reqsize,size,zero)
+  #define mi_track_free_size(p,_size)
+
+The macros are set up such that the size passed to `mi_track_free_size`
+always matches the size of `mi_track_malloc_size`. (currently, `size == mi_usable_size(p)`).
+The `reqsize` is what the user requested, and `size >= reqsize`.
+The `size` is either byte precise (and `size==reqsize`) if `MI_PADDING` is enabled,
+or otherwise it is the usable block size which may be larger than the original request.
+Use `_mi_block_size_of(void* p)` to get the full block size that was allocated (including padding etc).
+The `zero` parameter is `true` if the allocated block is zero initialized.
+
+Optional:
+
+  #define mi_track_align(p,alignedp,offset,size)
+  #define mi_track_resize(p,oldsize,newsize)
+  #define mi_track_init()
+
+The `mi_track_align` is called right after a `mi_track_malloc` for aligned pointers in a block.
+The corresponding `mi_track_free` still uses the block start pointer and original size (corresponding to the `mi_track_malloc`).
+The `mi_track_resize` is currently unused but could be called on reallocations within a block.
+`mi_track_init` is called at program start.
+
+The following macros are for tools like asan and valgrind to track whether memory is
+defined, undefined, or not accessible at all:
+
+  #define mi_track_mem_defined(p,size)
+  #define mi_track_mem_undefined(p,size)
+  #define mi_track_mem_noaccess(p,size)
+
+-------------------------------------------------------------------------------------------------------*/
+
+#if MI_TRACK_VALGRIND
+// valgrind tool
+
+#define MI_TRACK_ENABLED      1
+#define MI_TRACK_HEAP_DESTROY 1           // track free of individual blocks on heap_destroy
+#define MI_TRACK_TOOL         "valgrind"
+
+#include <valgrind/valgrind.h>
+#include <valgrind/memcheck.h>
+
+#define mi_track_malloc_size(p,reqsize,size,zero) VALGRIND_MALLOCLIKE_BLOCK(p,size,MI_PADDING_SIZE /*red zone*/,zero)
+#define mi_track_free_size(p,_size)               VALGRIND_FREELIKE_BLOCK(p,MI_PADDING_SIZE /*red zone*/)
+#define mi_track_resize(p,oldsize,newsize)        VALGRIND_RESIZEINPLACE_BLOCK(p,oldsize,newsize,MI_PADDING_SIZE /*red zone*/)
+#define mi_track_mem_defined(p,size)              VALGRIND_MAKE_MEM_DEFINED(p,size)
+#define mi_track_mem_undefined(p,size)            VALGRIND_MAKE_MEM_UNDEFINED(p,size)
+#define mi_track_mem_noaccess(p,size)             VALGRIND_MAKE_MEM_NOACCESS(p,size)
+
+#elif MI_TRACK_ASAN
+// address sanitizer
+
+#define MI_TRACK_ENABLED      1
+#define MI_TRACK_HEAP_DESTROY 0
+#define MI_TRACK_TOOL         "asan"
+
+#include <sanitizer/asan_interface.h>
+
+#define mi_track_malloc_size(p,reqsize,size,zero) ASAN_UNPOISON_MEMORY_REGION(p,size)
+#define mi_track_free_size(p,size)                ASAN_POISON_MEMORY_REGION(p,size)
+#define mi_track_mem_defined(p,size)              ASAN_UNPOISON_MEMORY_REGION(p,size)
+#define mi_track_mem_undefined(p,size)            ASAN_UNPOISON_MEMORY_REGION(p,size)
+#define mi_track_mem_noaccess(p,size)             ASAN_POISON_MEMORY_REGION(p,size)
+
+#elif MI_TRACK_ETW
+// windows event tracing
+
+#define MI_TRACK_ENABLED      1
+#define MI_TRACK_HEAP_DESTROY 1
+#define MI_TRACK_TOOL         "ETW"
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include "../src/prim/windows/etw.h"
+
+#define mi_track_init()                           EventRegistermicrosoft_windows_mimalloc();
+#define mi_track_malloc_size(p,reqsize,size,zero) EventWriteETW_MI_ALLOC((UINT64)(p), size)
+#define mi_track_free_size(p,size)                EventWriteETW_MI_FREE((UINT64)(p), size)
+
+#else
+// no tracking
+
+#define MI_TRACK_ENABLED      0
+#define MI_TRACK_HEAP_DESTROY 0
+#define MI_TRACK_TOOL         "none"
+
+#define mi_track_malloc_size(p,reqsize,size,zero)
+#define mi_track_free_size(p,_size)
+
+#endif
+
+// -------------------
+// Utility definitions
+
+#ifndef mi_track_resize
+#define mi_track_resize(p,oldsize,newsize)      mi_track_free_size(p,oldsize); mi_track_malloc(p,newsize,false)
+#endif
+
+#ifndef mi_track_align
+#define mi_track_align(p,alignedp,offset,size)  mi_track_mem_noaccess(p,offset)
+#endif
+
+#ifndef mi_track_init
+#define mi_track_init()
+#endif
+
+#ifndef mi_track_mem_defined
+#define mi_track_mem_defined(p,size)
+#endif
+
+#ifndef mi_track_mem_undefined
+#define mi_track_mem_undefined(p,size)
+#endif
+
+#ifndef mi_track_mem_noaccess
+#define mi_track_mem_noaccess(p,size)
+#endif
+
+
+#if MI_PADDING
+#define mi_track_malloc(p,reqsize,zero) \
+  if ((p)!=NULL) { \
+    mi_assert_internal(mi_usable_size(p)==(reqsize)); \
+    mi_track_malloc_size(p,reqsize,reqsize,zero); \
+  }
+#else
+#define mi_track_malloc(p,reqsize,zero) \
+  if ((p)!=NULL) { \
+    mi_assert_internal(mi_usable_size(p)>=(reqsize)); \
+    mi_track_malloc_size(p,reqsize,mi_usable_size(p),zero); \
+  }
+#endif
+
+#endif
diff --git a/Include/internal/mimalloc/mimalloc/types.h b/Include/internal/mimalloc/mimalloc/types.h
new file mode 100644
index 00000000000000..7616f37e4b978f
--- /dev/null
+++ b/Include/internal/mimalloc/mimalloc/types.h
@@ -0,0 +1,670 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#pragma once
+#ifndef MIMALLOC_TYPES_H
+#define MIMALLOC_TYPES_H
+
+// --------------------------------------------------------------------------
+// This file contains the main type definitions for mimalloc:
+// mi_heap_t      : all data for a thread-local heap, contains
+//                  lists of all managed heap pages.
+// mi_segment_t   : a larger chunk of memory (32GiB) from where pages
+//                  are allocated.
+// mi_page_t      : a mimalloc page (usually 64KiB or 512KiB) from
+//                  where objects are allocated.
+// --------------------------------------------------------------------------
+
+
+#include <stddef.h>   // ptrdiff_t
+#include <stdint.h>   // uintptr_t, uint16_t, etc
+#include "mimalloc/atomic.h"  // _Atomic
+
+#ifdef _MSC_VER
+#pragma warning(disable:4214) // bitfield is not int
+#endif
+
+// Minimal alignment necessary. On most platforms 16 bytes are needed
+// due to SSE registers for example. This must be at least `sizeof(void*)`
+#ifndef MI_MAX_ALIGN_SIZE
+#define MI_MAX_ALIGN_SIZE  16   // sizeof(max_align_t)
+#endif
+
+// ------------------------------------------------------
+// Variants
+// ------------------------------------------------------
+
+// Define NDEBUG in the release version to disable assertions.
+// #define NDEBUG
+
+// Define MI_TRACK_<tool> to enable tracking support
+// #define MI_TRACK_VALGRIND 1
+// #define MI_TRACK_ASAN     1
+// #define MI_TRACK_ETW      1
+
+// Define MI_STAT as 1 to maintain statistics; set it to 2 to have detailed statistics (but costs some performance).
+// #define MI_STAT 1
+
+// Define MI_SECURE to enable security mitigations
+// #define MI_SECURE 1  // guard page around metadata
+// #define MI_SECURE 2  // guard page around each mimalloc page
+// #define MI_SECURE 3  // encode free lists (detect corrupted free list (buffer overflow), and invalid pointer free)
+// #define MI_SECURE 4  // checks for double free. (may be more expensive)
+
+#if !defined(MI_SECURE)
+#define MI_SECURE 0
+#endif
+
+// Define MI_DEBUG for debug mode
+// #define MI_DEBUG 1  // basic assertion checks and statistics, check double free, corrupted free list, and invalid pointer free.
+// #define MI_DEBUG 2  // + internal assertion checks
+// #define MI_DEBUG 3  // + extensive internal invariant checking (cmake -DMI_DEBUG_FULL=ON)
+#if !defined(MI_DEBUG)
+#if !defined(NDEBUG) || defined(_DEBUG)
+#define MI_DEBUG 2
+#else
+#define MI_DEBUG 0
+#endif
+#endif
+
+// Reserve extra padding at the end of each block to be more resilient against heap block overflows.
+// The padding can detect buffer overflow on free.
+#if !defined(MI_PADDING) && (MI_SECURE>=3 || MI_DEBUG>=1 || (MI_TRACK_VALGRIND || MI_TRACK_ASAN || MI_TRACK_ETW))
+#define MI_PADDING  1
+#endif
+
+// Check padding bytes; allows byte-precise buffer overflow detection
+#if !defined(MI_PADDING_CHECK) && MI_PADDING && (MI_SECURE>=3 || MI_DEBUG>=1)
+#define MI_PADDING_CHECK 1
+#endif
+
+
+// Encoded free lists allow detection of corrupted free lists
+// and can detect buffer overflows, modify after free, and double `free`s.
+#if (MI_SECURE>=3 || MI_DEBUG>=1)
+#define MI_ENCODE_FREELIST  1
+#endif
+
+
+// We used to abandon huge pages but to eagerly deallocate if freed from another thread,
+// but that makes it not possible to visit them during a heap walk or include them in a
+// `mi_heap_destroy`. We therefore instead reset/decommit the huge blocks if freed from
+// another thread so most memory is available until it gets properly freed by the owning thread.
+// #define MI_HUGE_PAGE_ABANDON 1
+
+
+// ------------------------------------------------------
+// Platform specific values
+// ------------------------------------------------------
+
+// ------------------------------------------------------
+// Size of a pointer.
+// We assume that `sizeof(void*)==sizeof(intptr_t)`
+// and it holds for all platforms we know of.
+//
+// However, the C standard only requires that:
+//  p == (void*)((intptr_t)p))
+// but we also need:
+//  i == (intptr_t)((void*)i)
+// or otherwise one might define an intptr_t type that is larger than a pointer...
+// ------------------------------------------------------
+
+#if INTPTR_MAX > INT64_MAX
+# define MI_INTPTR_SHIFT (4)  // assume 128-bit  (as on arm CHERI for example)
+#elif INTPTR_MAX == INT64_MAX
+# define MI_INTPTR_SHIFT (3)
+#elif INTPTR_MAX == INT32_MAX
+# define MI_INTPTR_SHIFT (2)
+#else
+#error platform pointers must be 32, 64, or 128 bits
+#endif
+
+#if SIZE_MAX == UINT64_MAX
+# define MI_SIZE_SHIFT (3)
+typedef int64_t  mi_ssize_t;
+#elif SIZE_MAX == UINT32_MAX
+# define MI_SIZE_SHIFT (2)
+typedef int32_t  mi_ssize_t;
+#else
+#error platform objects must be 32 or 64 bits
+#endif
+
+#if (SIZE_MAX/2) > LONG_MAX
+# define MI_ZU(x)  x##ULL
+# define MI_ZI(x)  x##LL
+#else
+# define MI_ZU(x)  x##UL
+# define MI_ZI(x)  x##L
+#endif
+
+#define MI_INTPTR_SIZE  (1<<MI_INTPTR_SHIFT)
+#define MI_INTPTR_BITS  (MI_INTPTR_SIZE*8)
+
+#define MI_SIZE_SIZE  (1<<MI_SIZE_SHIFT)
+#define MI_SIZE_BITS  (MI_SIZE_SIZE*8)
+
+#define MI_KiB     (MI_ZU(1024))
+#define MI_MiB     (MI_KiB*MI_KiB)
+#define MI_GiB     (MI_MiB*MI_KiB)
+
+
+// ------------------------------------------------------
+// Main internal data-structures
+// ------------------------------------------------------
+
+// Main tuning parameters for segment and page sizes
+// Sizes for 64-bit (usually divide by two for 32-bit)
+#define MI_SEGMENT_SLICE_SHIFT            (13 + MI_INTPTR_SHIFT)         // 64KiB  (32KiB on 32-bit)
+
+#if MI_INTPTR_SIZE > 4
+#define MI_SEGMENT_SHIFT                  ( 9 + MI_SEGMENT_SLICE_SHIFT)  // 32MiB
+#else
+#define MI_SEGMENT_SHIFT                  ( 7 + MI_SEGMENT_SLICE_SHIFT)  // 4MiB on 32-bit
+#endif
+
+#define MI_SMALL_PAGE_SHIFT               (MI_SEGMENT_SLICE_SHIFT)       // 64KiB
+#define MI_MEDIUM_PAGE_SHIFT              ( 3 + MI_SMALL_PAGE_SHIFT)     // 512KiB
+
+
+// Derived constants
+#define MI_SEGMENT_SIZE                   (MI_ZU(1)<<MI_SEGMENT_SHIFT)
+#define MI_SEGMENT_ALIGN                  MI_SEGMENT_SIZE
+#define MI_SEGMENT_MASK                   ((uintptr_t)(MI_SEGMENT_ALIGN - 1))
+#define MI_SEGMENT_SLICE_SIZE             (MI_ZU(1)<< MI_SEGMENT_SLICE_SHIFT)
+#define MI_SLICES_PER_SEGMENT             (MI_SEGMENT_SIZE / MI_SEGMENT_SLICE_SIZE) // 1024
+
+#define MI_SMALL_PAGE_SIZE                (MI_ZU(1)<<MI_SMALL_PAGE_SHIFT)
+#define MI_MEDIUM_PAGE_SIZE               (MI_ZU(1)<<MI_MEDIUM_PAGE_SHIFT)
+
+#define MI_SMALL_OBJ_SIZE_MAX             (MI_SMALL_PAGE_SIZE/4)   // 8KiB on 64-bit
+#define MI_MEDIUM_OBJ_SIZE_MAX            (MI_MEDIUM_PAGE_SIZE/4)  // 128KiB on 64-bit
+#define MI_MEDIUM_OBJ_WSIZE_MAX           (MI_MEDIUM_OBJ_SIZE_MAX/MI_INTPTR_SIZE)
+#define MI_LARGE_OBJ_SIZE_MAX             (MI_SEGMENT_SIZE/2)      // 32MiB on 64-bit
+#define MI_LARGE_OBJ_WSIZE_MAX            (MI_LARGE_OBJ_SIZE_MAX/MI_INTPTR_SIZE)
+
+// Maximum number of size classes. (spaced exponentially in 12.5% increments)
+#define MI_BIN_HUGE  (73U)
+
+#if (MI_MEDIUM_OBJ_WSIZE_MAX >= 655360)
+#error "mimalloc internal: define more bins"
+#endif
+
+// Maximum slice offset (15)
+#define MI_MAX_SLICE_OFFSET               ((MI_ALIGNMENT_MAX / MI_SEGMENT_SLICE_SIZE) - 1)
+
+// Used as a special value to encode block sizes in 32 bits.
+#define MI_HUGE_BLOCK_SIZE                ((uint32_t)(2*MI_GiB))
+
+// blocks up to this size are always allocated aligned
+#define MI_MAX_ALIGN_GUARANTEE            (8*MI_MAX_ALIGN_SIZE)
+
+// Alignments over MI_ALIGNMENT_MAX are allocated in dedicated huge page segments
+#define MI_ALIGNMENT_MAX                  (MI_SEGMENT_SIZE >> 1)
+
+
+// ------------------------------------------------------
+// Mimalloc pages contain allocated blocks
+// ------------------------------------------------------
+
+// The free lists use encoded next fields
+// (Only actually encodes when MI_ENCODED_FREELIST is defined.)
+typedef uintptr_t  mi_encoded_t;
+
+// thread id's
+typedef size_t     mi_threadid_t;
+
+// free lists contain blocks
+typedef struct mi_block_s {
+  mi_encoded_t next;
+} mi_block_t;
+
+
+// The delayed flags are used for efficient multi-threaded free-ing
+typedef enum mi_delayed_e {
+  MI_USE_DELAYED_FREE   = 0, // push on the owning heap thread delayed list
+  MI_DELAYED_FREEING    = 1, // temporary: another thread is accessing the owning heap
+  MI_NO_DELAYED_FREE    = 2, // optimize: push on page local thread free queue if another block is already in the heap thread delayed free list
+  MI_NEVER_DELAYED_FREE = 3  // sticky, only resets on page reclaim
+} mi_delayed_t;
+
+
+// The `in_full` and `has_aligned` page flags are put in a union to efficiently
+// test if both are false (`full_aligned == 0`) in the `mi_free` routine.
+#if !MI_TSAN
+typedef union mi_page_flags_s {
+  uint8_t full_aligned;
+  struct {
+    uint8_t in_full : 1;
+    uint8_t has_aligned : 1;
+  } x;
+} mi_page_flags_t;
+#else
+// under thread sanitizer, use a byte for each flag to suppress warning, issue #130
+typedef union mi_page_flags_s {
+  uint16_t full_aligned;
+  struct {
+    uint8_t in_full;
+    uint8_t has_aligned;
+  } x;
+} mi_page_flags_t;
+#endif
+
+// Thread free list.
+// We use the bottom 2 bits of the pointer for mi_delayed_t flags
+typedef uintptr_t mi_thread_free_t;
+
+// A page contains blocks of one specific size (`block_size`).
+// Each page has three list of free blocks:
+// `free` for blocks that can be allocated,
+// `local_free` for freed blocks that are not yet available to `mi_malloc`
+// `thread_free` for freed blocks by other threads
+// The `local_free` and `thread_free` lists are migrated to the `free` list
+// when it is exhausted. The separate `local_free` list is necessary to
+// implement a monotonic heartbeat. The `thread_free` list is needed for
+// avoiding atomic operations in the common case.
+//
+//
+// `used - |thread_free|` == actual blocks that are in use (alive)
+// `used - |thread_free| + |free| + |local_free| == capacity`
+//
+// We don't count `freed` (as |free|) but use `used` to reduce
+// the number of memory accesses in the `mi_page_all_free` function(s).
+//
+// Notes:
+// - Access is optimized for `mi_free` and `mi_page_alloc` (in `alloc.c`)
+// - Using `uint16_t` does not seem to slow things down
+// - The size is 8 words on 64-bit which helps the page index calculations
+//   (and 10 words on 32-bit, and encoded free lists add 2 words. Sizes 10
+//    and 12 are still good for address calculation)
+// - To limit the structure size, the `xblock_size` is 32-bits only; for
+//   blocks > MI_HUGE_BLOCK_SIZE the size is determined from the segment page size
+// - `thread_free` uses the bottom bits as a delayed-free flags to optimize
+//   concurrent frees where only the first concurrent free adds to the owning
+//   heap `thread_delayed_free` list (see `alloc.c:mi_free_block_mt`).
+//   The invariant is that no-delayed-free is only set if there is
+//   at least one block that will be added, or as already been added, to
+//   the owning heap `thread_delayed_free` list. This guarantees that pages
+//   will be freed correctly even if only other threads free blocks.
+typedef struct mi_page_s {
+  // "owned" by the segment
+  uint32_t              slice_count;       // slices in this page (0 if not a page)
+  uint32_t              slice_offset;      // distance from the actual page data slice (0 if a page)
+  uint8_t               is_committed : 1;  // `true` if the page virtual memory is committed
+  uint8_t               is_zero_init : 1;  // `true` if the page was initially zero initialized
+
+  // layout like this to optimize access in `mi_malloc` and `mi_free`
+  uint16_t              capacity;          // number of blocks committed, must be the first field, see `segment.c:page_clear`
+  uint16_t              reserved;          // number of blocks reserved in memory
+  mi_page_flags_t       flags;             // `in_full` and `has_aligned` flags (8 bits)
+  uint8_t               free_is_zero : 1;  // `true` if the blocks in the free list are zero initialized
+  uint8_t               retire_expire : 7; // expiration count for retired blocks
+
+  mi_block_t*           free;              // list of available free blocks (`malloc` allocates from this list)
+  uint32_t              used;              // number of blocks in use (including blocks in `local_free` and `thread_free`)
+  uint32_t              xblock_size;       // size available in each block (always `>0`)
+  mi_block_t*           local_free;        // list of deferred free blocks by this thread (migrates to `free`)
+
+  #if (MI_ENCODE_FREELIST || MI_PADDING)
+  uintptr_t             keys[2];           // two random keys to encode the free lists (see `_mi_block_next`) or padding canary
+  #endif
+
+  _Atomic(mi_thread_free_t) xthread_free;  // list of deferred free blocks freed by other threads
+  _Atomic(uintptr_t)        xheap;
+
+  struct mi_page_s*     next;              // next page owned by this thread with the same `block_size`
+  struct mi_page_s*     prev;              // previous page owned by this thread with the same `block_size`
+
+  // 64-bit 9 words, 32-bit 12 words, (+2 for secure)
+  #if MI_INTPTR_SIZE==8
+  uintptr_t padding[1];
+  #endif
+} mi_page_t;
+
+
+
+// ------------------------------------------------------
+// Mimalloc segments contain mimalloc pages
+// ------------------------------------------------------
+
+typedef enum mi_page_kind_e {
+  MI_PAGE_SMALL,    // small blocks go into 64KiB pages inside a segment
+  MI_PAGE_MEDIUM,   // medium blocks go into medium pages inside a segment
+  MI_PAGE_LARGE,    // larger blocks go into a page of just one block
+  MI_PAGE_HUGE,     // huge blocks (> 16 MiB) are put into a single page in a single segment.
+} mi_page_kind_t;
+
+typedef enum mi_segment_kind_e {
+  MI_SEGMENT_NORMAL, // MI_SEGMENT_SIZE size with pages inside.
+  MI_SEGMENT_HUGE,   // > MI_LARGE_SIZE_MAX segment with just one huge page inside.
+} mi_segment_kind_t;
+
+// ------------------------------------------------------
+// A segment holds a commit mask where a bit is set if
+// the corresponding MI_COMMIT_SIZE area is committed.
+// The MI_COMMIT_SIZE must be a multiple of the slice
+// size. If it is equal we have the most fine grained
+// decommit (but setting it higher can be more efficient).
+// The MI_MINIMAL_COMMIT_SIZE is the minimal amount that will
+// be committed in one go which can be set higher than
+// MI_COMMIT_SIZE for efficiency (while the decommit mask
+// is still tracked in fine-grained MI_COMMIT_SIZE chunks)
+// ------------------------------------------------------
+
+#define MI_MINIMAL_COMMIT_SIZE      (1*MI_SEGMENT_SLICE_SIZE)
+#define MI_COMMIT_SIZE              (MI_SEGMENT_SLICE_SIZE)              // 64KiB
+#define MI_COMMIT_MASK_BITS         (MI_SEGMENT_SIZE / MI_COMMIT_SIZE)
+#define MI_COMMIT_MASK_FIELD_BITS    MI_SIZE_BITS
+#define MI_COMMIT_MASK_FIELD_COUNT  (MI_COMMIT_MASK_BITS / MI_COMMIT_MASK_FIELD_BITS)
+
+#if (MI_COMMIT_MASK_BITS != (MI_COMMIT_MASK_FIELD_COUNT * MI_COMMIT_MASK_FIELD_BITS))
+#error "the segment size must be exactly divisible by the (commit size * size_t bits)"
+#endif
+
+typedef struct mi_commit_mask_s {
+  size_t mask[MI_COMMIT_MASK_FIELD_COUNT];
+} mi_commit_mask_t;
+
+typedef mi_page_t  mi_slice_t;
+typedef int64_t    mi_msecs_t;
+
+
+// Memory can reside in arena's, direct OS allocated, or statically allocated. The memid keeps track of this.
+typedef enum mi_memkind_e {
+  MI_MEM_NONE,      // not allocated
+  MI_MEM_EXTERNAL,  // not owned by mimalloc but provided externally (via `mi_manage_os_memory` for example)
+  MI_MEM_STATIC,    // allocated in a static area and should not be freed (for arena meta data for example)
+  MI_MEM_OS,        // allocated from the OS
+  MI_MEM_OS_HUGE,   // allocated as huge os pages
+  MI_MEM_OS_REMAP,  // allocated in a remapable area (i.e. using `mremap`)
+  MI_MEM_ARENA      // allocated from an arena (the usual case)
+} mi_memkind_t;
+
+static inline bool mi_memkind_is_os(mi_memkind_t memkind) {
+  return (memkind >= MI_MEM_OS && memkind <= MI_MEM_OS_REMAP);
+}
+
+typedef struct mi_memid_os_info {
+  void*         base;               // actual base address of the block (used for offset aligned allocations)
+  size_t        alignment;          // alignment at allocation
+} mi_memid_os_info_t;
+
+typedef struct mi_memid_arena_info {
+  size_t        block_index;        // index in the arena
+  mi_arena_id_t id;                 // arena id (>= 1)
+  bool          is_exclusive;       // the arena can only be used for specific arena allocations
+} mi_memid_arena_info_t;
+
+typedef struct mi_memid_s {
+  union {
+    mi_memid_os_info_t    os;       // only used for MI_MEM_OS
+    mi_memid_arena_info_t arena;    // only used for MI_MEM_ARENA
+  } mem;
+  bool          is_pinned;          // `true` if we cannot decommit/reset/protect in this memory (e.g. when allocated using large OS pages)
+  bool          initially_committed;// `true` if the memory was originally allocated as committed
+  bool          initially_zero;     // `true` if the memory was originally zero initialized
+  mi_memkind_t  memkind;
+} mi_memid_t;
+
+
+// Segments are large allocated memory blocks (8mb on 64 bit) from
+// the OS. Inside segments we allocated fixed size _pages_ that
+// contain blocks.
+typedef struct mi_segment_s {
+  // constant fields
+  mi_memid_t        memid;              // memory id for arena allocation
+  bool              allow_decommit;
+  bool              allow_purge;
+  size_t            segment_size;
+
+  // segment fields
+  mi_msecs_t        purge_expire;
+  mi_commit_mask_t  purge_mask;
+  mi_commit_mask_t  commit_mask;
+
+  _Atomic(struct mi_segment_s*) abandoned_next;
+
+  // from here is zero initialized
+  struct mi_segment_s* next;            // the list of freed segments in the cache (must be first field, see `segment.c:mi_segment_init`)
+
+  size_t            abandoned;          // abandoned pages (i.e. the original owning thread stopped) (`abandoned <= used`)
+  size_t            abandoned_visits;   // count how often this segment is visited in the abandoned list (to force reclaim it it is too long)
+  size_t            used;               // count of pages in use
+  uintptr_t         cookie;             // verify addresses in debug mode: `mi_ptr_cookie(segment) == segment->cookie`
+
+  size_t            segment_slices;      // for huge segments this may be different from `MI_SLICES_PER_SEGMENT`
+  size_t            segment_info_slices; // initial slices we are using segment info and possible guard pages.
+
+  // layout like this to optimize access in `mi_free`
+  mi_segment_kind_t kind;
+  size_t            slice_entries;       // entries in the `slices` array, at most `MI_SLICES_PER_SEGMENT`
+  _Atomic(mi_threadid_t) thread_id;      // unique id of the thread owning this segment
+
+  mi_slice_t        slices[MI_SLICES_PER_SEGMENT+1];  // one more for huge blocks with large alignment
+} mi_segment_t;
+
+
+// ------------------------------------------------------
+// Heaps
+// Provide first-class heaps to allocate from.
+// A heap just owns a set of pages for allocation and
+// can only be allocate/reallocate from the thread that created it.
+// Freeing blocks can be done from any thread though.
+// Per thread, the segments are shared among its heaps.
+// Per thread, there is always a default heap that is
+// used for allocation; it is initialized to statically
+// point to an empty heap to avoid initialization checks
+// in the fast path.
+// ------------------------------------------------------
+
+// Thread local data
+typedef struct mi_tld_s mi_tld_t;
+
+// Pages of a certain block size are held in a queue.
+typedef struct mi_page_queue_s {
+  mi_page_t* first;
+  mi_page_t* last;
+  size_t     block_size;
+} mi_page_queue_t;
+
+#define MI_BIN_FULL  (MI_BIN_HUGE+1)
+
+// Random context
+typedef struct mi_random_cxt_s {
+  uint32_t input[16];
+  uint32_t output[16];
+  int      output_available;
+  bool     weak;
+} mi_random_ctx_t;
+
+
+// In debug mode there is a padding structure at the end of the blocks to check for buffer overflows
+#if (MI_PADDING)
+typedef struct mi_padding_s {
+  uint32_t canary; // encoded block value to check validity of the padding (in case of overflow)
+  uint32_t delta;  // padding bytes before the block. (mi_usable_size(p) - delta == exact allocated bytes)
+} mi_padding_t;
+#define MI_PADDING_SIZE   (sizeof(mi_padding_t))
+#define MI_PADDING_WSIZE  ((MI_PADDING_SIZE + MI_INTPTR_SIZE - 1) / MI_INTPTR_SIZE)
+#else
+#define MI_PADDING_SIZE   0
+#define MI_PADDING_WSIZE  0
+#endif
+
+#define MI_PAGES_DIRECT   (MI_SMALL_WSIZE_MAX + MI_PADDING_WSIZE + 1)
+
+
+// A heap owns a set of pages.
+struct mi_heap_s {
+  mi_tld_t*             tld;
+  mi_page_t*            pages_free_direct[MI_PAGES_DIRECT];  // optimize: array where every entry points a page with possibly free blocks in the corresponding queue for that size.
+  mi_page_queue_t       pages[MI_BIN_FULL + 1];              // queue of pages for each size class (or "bin")
+  _Atomic(mi_block_t*)  thread_delayed_free;
+  mi_threadid_t         thread_id;                           // thread this heap belongs too
+  mi_arena_id_t         arena_id;                            // arena id if the heap belongs to a specific arena (or 0)
+  uintptr_t             cookie;                              // random cookie to verify pointers (see `_mi_ptr_cookie`)
+  uintptr_t             keys[2];                             // two random keys used to encode the `thread_delayed_free` list
+  mi_random_ctx_t       random;                              // random number context used for secure allocation
+  size_t                page_count;                          // total number of pages in the `pages` queues.
+  size_t                page_retired_min;                    // smallest retired index (retired pages are fully free, but still in the page queues)
+  size_t                page_retired_max;                    // largest retired index into the `pages` array.
+  mi_heap_t*            next;                                // list of heaps per thread
+  bool                  no_reclaim;                          // `true` if this heap should not reclaim abandoned pages
+};
+
+
+
+// ------------------------------------------------------
+// Debug
+// ------------------------------------------------------
+
+#if !defined(MI_DEBUG_UNINIT)
+#define MI_DEBUG_UNINIT     (0xD0)
+#endif
+#if !defined(MI_DEBUG_FREED)
+#define MI_DEBUG_FREED      (0xDF)
+#endif
+#if !defined(MI_DEBUG_PADDING)
+#define MI_DEBUG_PADDING    (0xDE)
+#endif
+
+#if (MI_DEBUG)
+// use our own assertion to print without memory allocation
+void _mi_assert_fail(const char* assertion, const char* fname, unsigned int line, const char* func );
+#define mi_assert(expr)     ((expr) ? (void)0 : _mi_assert_fail(#expr,__FILE__,__LINE__,__func__))
+#else
+#define mi_assert(x)
+#endif
+
+#if (MI_DEBUG>1)
+#define mi_assert_internal    mi_assert
+#else
+#define mi_assert_internal(x)
+#endif
+
+#if (MI_DEBUG>2)
+#define mi_assert_expensive   mi_assert
+#else
+#define mi_assert_expensive(x)
+#endif
+
+// ------------------------------------------------------
+// Statistics
+// ------------------------------------------------------
+
+#ifndef MI_STAT
+#if (MI_DEBUG>0)
+#define MI_STAT 2
+#else
+#define MI_STAT 0
+#endif
+#endif
+
+typedef struct mi_stat_count_s {
+  int64_t allocated;
+  int64_t freed;
+  int64_t peak;
+  int64_t current;
+} mi_stat_count_t;
+
+typedef struct mi_stat_counter_s {
+  int64_t total;
+  int64_t count;
+} mi_stat_counter_t;
+
+typedef struct mi_stats_s {
+  mi_stat_count_t segments;
+  mi_stat_count_t pages;
+  mi_stat_count_t reserved;
+  mi_stat_count_t committed;
+  mi_stat_count_t reset;
+  mi_stat_count_t purged;
+  mi_stat_count_t page_committed;
+  mi_stat_count_t segments_abandoned;
+  mi_stat_count_t pages_abandoned;
+  mi_stat_count_t threads;
+  mi_stat_count_t normal;
+  mi_stat_count_t huge;
+  mi_stat_count_t large;
+  mi_stat_count_t malloc;
+  mi_stat_count_t segments_cache;
+  mi_stat_counter_t pages_extended;
+  mi_stat_counter_t mmap_calls;
+  mi_stat_counter_t commit_calls;
+  mi_stat_counter_t reset_calls;
+  mi_stat_counter_t purge_calls;
+  mi_stat_counter_t page_no_retire;
+  mi_stat_counter_t searches;
+  mi_stat_counter_t normal_count;
+  mi_stat_counter_t huge_count;
+  mi_stat_counter_t large_count;
+#if MI_STAT>1
+  mi_stat_count_t normal_bins[MI_BIN_HUGE+1];
+#endif
+} mi_stats_t;
+
+
+void _mi_stat_increase(mi_stat_count_t* stat, size_t amount);
+void _mi_stat_decrease(mi_stat_count_t* stat, size_t amount);
+void _mi_stat_counter_increase(mi_stat_counter_t* stat, size_t amount);
+
+#if (MI_STAT)
+#define mi_stat_increase(stat,amount)         _mi_stat_increase( &(stat), amount)
+#define mi_stat_decrease(stat,amount)         _mi_stat_decrease( &(stat), amount)
+#define mi_stat_counter_increase(stat,amount) _mi_stat_counter_increase( &(stat), amount)
+#else
+#define mi_stat_increase(stat,amount)         (void)0
+#define mi_stat_decrease(stat,amount)         (void)0
+#define mi_stat_counter_increase(stat,amount) (void)0
+#endif
+
+#define mi_heap_stat_counter_increase(heap,stat,amount)  mi_stat_counter_increase( (heap)->tld->stats.stat, amount)
+#define mi_heap_stat_increase(heap,stat,amount)  mi_stat_increase( (heap)->tld->stats.stat, amount)
+#define mi_heap_stat_decrease(heap,stat,amount)  mi_stat_decrease( (heap)->tld->stats.stat, amount)
+
+// ------------------------------------------------------
+// Thread Local data
+// ------------------------------------------------------
+
+// A "span" is is an available range of slices. The span queues keep
+// track of slice spans of at most the given `slice_count` (but more than the previous size class).
+typedef struct mi_span_queue_s {
+  mi_slice_t* first;
+  mi_slice_t* last;
+  size_t      slice_count;
+} mi_span_queue_t;
+
+#define MI_SEGMENT_BIN_MAX (35)     // 35 == mi_segment_bin(MI_SLICES_PER_SEGMENT)
+
+// OS thread local data
+typedef struct mi_os_tld_s {
+  size_t                region_idx;   // start point for next allocation
+  mi_stats_t*           stats;        // points to tld stats
+} mi_os_tld_t;
+
+
+// Segments thread local data
+typedef struct mi_segments_tld_s {
+  mi_span_queue_t     spans[MI_SEGMENT_BIN_MAX+1];  // free slice spans inside segments
+  size_t              count;        // current number of segments;
+  size_t              peak_count;   // peak number of segments
+  size_t              current_size; // current size of all segments
+  size_t              peak_size;    // peak size of all segments
+  mi_stats_t*         stats;        // points to tld stats
+  mi_os_tld_t*        os;           // points to os stats
+} mi_segments_tld_t;
+
+// Thread local data
+struct mi_tld_s {
+  unsigned long long  heartbeat;     // monotonic heartbeat count
+  bool                recurse;       // true if deferred was called; used to prevent infinite recursion.
+  mi_heap_t*          heap_backing;  // backing heap of this thread (cannot be deleted)
+  mi_heap_t*          heaps;         // list of heaps in this thread (so we can abandon all when the thread terminates)
+  mi_segments_tld_t   segments;      // segment tld
+  mi_os_tld_t         os;            // os tld
+  mi_stats_t          stats;         // statistics
+};
+
+#endif
diff --git a/Include/internal/pycore_abstract.h b/Include/internal/pycore_abstract.h
index b1afb2dc7be65e..3cc0afac4bd5b4 100644
--- a/Include/internal/pycore_abstract.h
+++ b/Include/internal/pycore_abstract.h
@@ -19,6 +19,42 @@ _PyIndex_Check(PyObject *obj)
 PyObject *_PyNumber_PowerNoMod(PyObject *lhs, PyObject *rhs);
 PyObject *_PyNumber_InPlacePowerNoMod(PyObject *lhs, PyObject *rhs);
 
+extern int _PyObject_HasLen(PyObject *o);
+
+/* === Sequence protocol ================================================ */
+
+#define PY_ITERSEARCH_COUNT    1
+#define PY_ITERSEARCH_INDEX    2
+#define PY_ITERSEARCH_CONTAINS 3
+
+/* Iterate over seq.
+
+   Result depends on the operation:
+
+   PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if
+     error.
+   PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of
+     obj in seq; set ValueError and return -1 if none found;
+     also return -1 on error.
+   PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on
+     error. */
+extern Py_ssize_t _PySequence_IterSearch(PyObject *seq,
+                                         PyObject *obj, int operation);
+
+/* === Mapping protocol ================================================= */
+
+extern int _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
+
+extern int _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
+
+// Convert Python int to Py_ssize_t. Do nothing if the argument is None.
+// Export for '_bisect' shared extension.
+PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
+
+// Same as PyNumber_Index() but can return an instance of a subclass of int.
+// Export for 'math' shared extension.
+PyAPI_FUNC(PyObject*) _PyNumber_Index(PyObject *o);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_ast.h b/Include/internal/pycore_ast.h
index 36277efe9c5ca5..f222d485e0b54b 100644
--- a/Include/internal/pycore_ast.h
+++ b/Include/internal/pycore_ast.h
@@ -10,7 +10,7 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_asdl.h"
+#include "pycore_asdl.h"          // _ASDL_SEQ_HEAD
 
 typedef struct _mod *mod_ty;
 
@@ -51,6 +51,8 @@ typedef struct _pattern *pattern_ty;
 
 typedef struct _type_ignore *type_ignore_ty;
 
+typedef struct _type_param *type_param_ty;
+
 
 typedef struct {
     _ASDL_SEQ_HEAD
@@ -147,6 +149,14 @@ typedef struct {
 asdl_type_ignore_seq *_Py_asdl_type_ignore_seq_new(Py_ssize_t size, PyArena
                                                    *arena);
 
+typedef struct {
+    _ASDL_SEQ_HEAD
+    type_param_ty typed_elements[1];
+} asdl_type_param_seq;
+
+asdl_type_param_seq *_Py_asdl_type_param_seq_new(Py_ssize_t size, PyArena
+                                                 *arena);
+
 
 enum _mod_kind {Module_kind=1, Interactive_kind=2, Expression_kind=3,
                  FunctionType_kind=4};
@@ -176,12 +186,13 @@ struct _mod {
 
 enum _stmt_kind {FunctionDef_kind=1, AsyncFunctionDef_kind=2, ClassDef_kind=3,
                   Return_kind=4, Delete_kind=5, Assign_kind=6,
-                  AugAssign_kind=7, AnnAssign_kind=8, For_kind=9,
-                  AsyncFor_kind=10, While_kind=11, If_kind=12, With_kind=13,
-                  AsyncWith_kind=14, Match_kind=15, Raise_kind=16, Try_kind=17,
-                  TryStar_kind=18, Assert_kind=19, Import_kind=20,
-                  ImportFrom_kind=21, Global_kind=22, Nonlocal_kind=23,
-                  Expr_kind=24, Pass_kind=25, Break_kind=26, Continue_kind=27};
+                  TypeAlias_kind=7, AugAssign_kind=8, AnnAssign_kind=9,
+                  For_kind=10, AsyncFor_kind=11, While_kind=12, If_kind=13,
+                  With_kind=14, AsyncWith_kind=15, Match_kind=16,
+                  Raise_kind=17, Try_kind=18, TryStar_kind=19, Assert_kind=20,
+                  Import_kind=21, ImportFrom_kind=22, Global_kind=23,
+                  Nonlocal_kind=24, Expr_kind=25, Pass_kind=26, Break_kind=27,
+                  Continue_kind=28};
 struct _stmt {
     enum _stmt_kind kind;
     union {
@@ -192,6 +203,7 @@ struct _stmt {
             asdl_expr_seq *decorator_list;
             expr_ty returns;
             string type_comment;
+            asdl_type_param_seq *type_params;
         } FunctionDef;
 
         struct {
@@ -201,6 +213,7 @@ struct _stmt {
             asdl_expr_seq *decorator_list;
             expr_ty returns;
             string type_comment;
+            asdl_type_param_seq *type_params;
         } AsyncFunctionDef;
 
         struct {
@@ -209,6 +222,7 @@ struct _stmt {
             asdl_keyword_seq *keywords;
             asdl_stmt_seq *body;
             asdl_expr_seq *decorator_list;
+            asdl_type_param_seq *type_params;
         } ClassDef;
 
         struct {
@@ -225,6 +239,12 @@ struct _stmt {
             string type_comment;
         } Assign;
 
+        struct {
+            expr_ty name;
+            asdl_type_param_seq *type_params;
+            expr_ty value;
+        } TypeAlias;
+
         struct {
             expr_ty target;
             operator_ty op;
@@ -630,6 +650,30 @@ struct _type_ignore {
     } v;
 };
 
+enum _type_param_kind {TypeVar_kind=1, ParamSpec_kind=2, TypeVarTuple_kind=3};
+struct _type_param {
+    enum _type_param_kind kind;
+    union {
+        struct {
+            identifier name;
+            expr_ty bound;
+        } TypeVar;
+
+        struct {
+            identifier name;
+        } ParamSpec;
+
+        struct {
+            identifier name;
+        } TypeVarTuple;
+
+    } v;
+    int lineno;
+    int col_offset;
+    int end_lineno;
+    int end_col_offset;
+};
+
 
 // Note: these macros affect function definitions, not only call sites.
 mod_ty _PyAST_Module(asdl_stmt_seq * body, asdl_type_ignore_seq * type_ignores,
@@ -640,19 +684,20 @@ mod_ty _PyAST_FunctionType(asdl_expr_seq * argtypes, expr_ty returns, PyArena
                            *arena);
 stmt_ty _PyAST_FunctionDef(identifier name, arguments_ty args, asdl_stmt_seq *
                            body, asdl_expr_seq * decorator_list, expr_ty
-                           returns, string type_comment, int lineno, int
-                           col_offset, int end_lineno, int end_col_offset,
-                           PyArena *arena);
+                           returns, string type_comment, asdl_type_param_seq *
+                           type_params, int lineno, int col_offset, int
+                           end_lineno, int end_col_offset, PyArena *arena);
 stmt_ty _PyAST_AsyncFunctionDef(identifier name, arguments_ty args,
                                 asdl_stmt_seq * body, asdl_expr_seq *
                                 decorator_list, expr_ty returns, string
-                                type_comment, int lineno, int col_offset, int
+                                type_comment, asdl_type_param_seq *
+                                type_params, int lineno, int col_offset, int
                                 end_lineno, int end_col_offset, PyArena *arena);
 stmt_ty _PyAST_ClassDef(identifier name, asdl_expr_seq * bases,
                         asdl_keyword_seq * keywords, asdl_stmt_seq * body,
-                        asdl_expr_seq * decorator_list, int lineno, int
-                        col_offset, int end_lineno, int end_col_offset, PyArena
-                        *arena);
+                        asdl_expr_seq * decorator_list, asdl_type_param_seq *
+                        type_params, int lineno, int col_offset, int
+                        end_lineno, int end_col_offset, PyArena *arena);
 stmt_ty _PyAST_Return(expr_ty value, int lineno, int col_offset, int
                       end_lineno, int end_col_offset, PyArena *arena);
 stmt_ty _PyAST_Delete(asdl_expr_seq * targets, int lineno, int col_offset, int
@@ -660,6 +705,9 @@ stmt_ty _PyAST_Delete(asdl_expr_seq * targets, int lineno, int col_offset, int
 stmt_ty _PyAST_Assign(asdl_expr_seq * targets, expr_ty value, string
                       type_comment, int lineno, int col_offset, int end_lineno,
                       int end_col_offset, PyArena *arena);
+stmt_ty _PyAST_TypeAlias(expr_ty name, asdl_type_param_seq * type_params,
+                         expr_ty value, int lineno, int col_offset, int
+                         end_lineno, int end_col_offset, PyArena *arena);
 stmt_ty _PyAST_AugAssign(expr_ty target, operator_ty op, expr_ty value, int
                          lineno, int col_offset, int end_lineno, int
                          end_col_offset, PyArena *arena);
@@ -844,6 +892,14 @@ pattern_ty _PyAST_MatchOr(asdl_pattern_seq * patterns, int lineno, int
                           col_offset, int end_lineno, int end_col_offset,
                           PyArena *arena);
 type_ignore_ty _PyAST_TypeIgnore(int lineno, string tag, PyArena *arena);
+type_param_ty _PyAST_TypeVar(identifier name, expr_ty bound, int lineno, int
+                             col_offset, int end_lineno, int end_col_offset,
+                             PyArena *arena);
+type_param_ty _PyAST_ParamSpec(identifier name, int lineno, int col_offset, int
+                               end_lineno, int end_col_offset, PyArena *arena);
+type_param_ty _PyAST_TypeVarTuple(identifier name, int lineno, int col_offset,
+                                  int end_lineno, int end_col_offset, PyArena
+                                  *arena);
 
 
 PyObject* PyAST_mod2obj(mod_ty t);
diff --git a/Include/internal/pycore_ast_state.h b/Include/internal/pycore_ast_state.h
index f15b4905eed14b..6ffd30aca7b11b 100644
--- a/Include/internal/pycore_ast_state.h
+++ b/Include/internal/pycore_ast_state.h
@@ -2,6 +2,9 @@
 
 #ifndef Py_INTERNAL_AST_STATE_H
 #define Py_INTERNAL_AST_STATE_H
+
+#include "pycore_lock.h"    // _PyOnceFlag
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -11,7 +14,8 @@ extern "C" {
 #endif
 
 struct ast_state {
-    int initialized;
+    _PyOnceFlag once;
+    int finalized;
     int recursion_depth;
     int recursion_limit;
     PyObject *AST_type;
@@ -118,6 +122,7 @@ struct ast_state {
     PyObject *Not_type;
     PyObject *Or_singleton;
     PyObject *Or_type;
+    PyObject *ParamSpec_type;
     PyObject *Pass_type;
     PyObject *Pow_singleton;
     PyObject *Pow_type;
@@ -137,7 +142,10 @@ struct ast_state {
     PyObject *TryStar_type;
     PyObject *Try_type;
     PyObject *Tuple_type;
+    PyObject *TypeAlias_type;
     PyObject *TypeIgnore_type;
+    PyObject *TypeVarTuple_type;
+    PyObject *TypeVar_type;
     PyObject *UAdd_singleton;
     PyObject *UAdd_type;
     PyObject *USub_singleton;
@@ -166,6 +174,7 @@ struct ast_state {
     PyObject *bases;
     PyObject *body;
     PyObject *boolop_type;
+    PyObject *bound;
     PyObject *cases;
     PyObject *cause;
     PyObject *cls;
@@ -243,6 +252,8 @@ struct ast_state {
     PyObject *type_comment;
     PyObject *type_ignore_type;
     PyObject *type_ignores;
+    PyObject *type_param_type;
+    PyObject *type_params;
     PyObject *unaryop_type;
     PyObject *upper;
     PyObject *value;
diff --git a/Include/internal/pycore_atexit.h b/Include/internal/pycore_atexit.h
index b4663b396852f3..4dcda8f517c787 100644
--- a/Include/internal/pycore_atexit.h
+++ b/Include/internal/pycore_atexit.h
@@ -1,5 +1,8 @@
 #ifndef Py_INTERNAL_ATEXIT_H
 #define Py_INTERNAL_ATEXIT_H
+
+#include "pycore_lock.h"        // PyMutex
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -15,6 +18,7 @@ extern "C" {
 typedef void (*atexit_callbackfunc)(void);
 
 struct _atexit_runtime_state {
+    PyMutex mutex;
 #define NEXITFUNCS 32
     atexit_callbackfunc callbacks[NEXITFUNCS];
     int ncallbacks;
@@ -24,7 +28,8 @@ struct _atexit_runtime_state {
 //###################
 // interpreter atexit
 
-struct atexit_callback;
+typedef void (*atexit_datacallbackfunc)(void *);
+
 typedef struct atexit_callback {
     atexit_datacallbackfunc func;
     void *data;
@@ -49,6 +54,11 @@ struct atexit_state {
     int callback_len;
 };
 
+// Export for '_xxinterpchannels' shared extension
+PyAPI_FUNC(int) _Py_AtExit(
+    PyInterpreterState *interp,
+    atexit_datacallbackfunc func,
+    void *data);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_atomic.h b/Include/internal/pycore_atomic.h
deleted file mode 100644
index 425d69f868b52b..00000000000000
--- a/Include/internal/pycore_atomic.h
+++ /dev/null
@@ -1,557 +0,0 @@
-#ifndef Py_ATOMIC_H
-#define Py_ATOMIC_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef Py_BUILD_CORE
-#  error "this header requires Py_BUILD_CORE define"
-#endif
-
-#include "dynamic_annotations.h"   /* _Py_ANNOTATE_MEMORY_ORDER */
-#include "pyconfig.h"
-
-#ifdef HAVE_STD_ATOMIC
-#  include <stdatomic.h>
-#endif
-
-
-#if defined(_MSC_VER)
-#include <intrin.h>
-#if defined(_M_IX86) || defined(_M_X64)
-#  include <immintrin.h>
-#endif
-#endif
-
-/* This is modeled after the atomics interface from C1x, according to
- * the draft at
- * http://www.open-std.org/JTC1/SC22/wg14/www/docs/n1425.pdf.
- * Operations and types are named the same except with a _Py_ prefix
- * and have the same semantics.
- *
- * Beware, the implementations here are deep magic.
- */
-
-#if defined(HAVE_STD_ATOMIC)
-
-typedef enum _Py_memory_order {
-    _Py_memory_order_relaxed = memory_order_relaxed,
-    _Py_memory_order_acquire = memory_order_acquire,
-    _Py_memory_order_release = memory_order_release,
-    _Py_memory_order_acq_rel = memory_order_acq_rel,
-    _Py_memory_order_seq_cst = memory_order_seq_cst
-} _Py_memory_order;
-
-typedef struct _Py_atomic_address {
-    atomic_uintptr_t _value;
-} _Py_atomic_address;
-
-typedef struct _Py_atomic_int {
-    atomic_int _value;
-} _Py_atomic_int;
-
-#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) \
-    atomic_signal_fence(ORDER)
-
-#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) \
-    atomic_thread_fence(ORDER)
-
-#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
-    atomic_store_explicit(&((ATOMIC_VAL)->_value), NEW_VAL, ORDER)
-
-#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
-    atomic_load_explicit(&((ATOMIC_VAL)->_value), ORDER)
-
-// Use builtin atomic operations in GCC >= 4.7 and clang
-#elif defined(HAVE_BUILTIN_ATOMIC)
-
-typedef enum _Py_memory_order {
-    _Py_memory_order_relaxed = __ATOMIC_RELAXED,
-    _Py_memory_order_acquire = __ATOMIC_ACQUIRE,
-    _Py_memory_order_release = __ATOMIC_RELEASE,
-    _Py_memory_order_acq_rel = __ATOMIC_ACQ_REL,
-    _Py_memory_order_seq_cst = __ATOMIC_SEQ_CST
-} _Py_memory_order;
-
-typedef struct _Py_atomic_address {
-    uintptr_t _value;
-} _Py_atomic_address;
-
-typedef struct _Py_atomic_int {
-    int _value;
-} _Py_atomic_int;
-
-#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) \
-    __atomic_signal_fence(ORDER)
-
-#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) \
-    __atomic_thread_fence(ORDER)
-
-#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
-    (assert((ORDER) == __ATOMIC_RELAXED                       \
-            || (ORDER) == __ATOMIC_SEQ_CST                    \
-            || (ORDER) == __ATOMIC_RELEASE),                  \
-     __atomic_store_n(&((ATOMIC_VAL)->_value), NEW_VAL, ORDER))
-
-#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER)           \
-    (assert((ORDER) == __ATOMIC_RELAXED                       \
-            || (ORDER) == __ATOMIC_SEQ_CST                    \
-            || (ORDER) == __ATOMIC_ACQUIRE                    \
-            || (ORDER) == __ATOMIC_CONSUME),                  \
-     __atomic_load_n(&((ATOMIC_VAL)->_value), ORDER))
-
-/* Only support GCC (for expression statements) and x86 (for simple
- * atomic semantics) and MSVC x86/x64/ARM */
-#elif defined(__GNUC__) && (defined(__i386__) || defined(__amd64))
-typedef enum _Py_memory_order {
-    _Py_memory_order_relaxed,
-    _Py_memory_order_acquire,
-    _Py_memory_order_release,
-    _Py_memory_order_acq_rel,
-    _Py_memory_order_seq_cst
-} _Py_memory_order;
-
-typedef struct _Py_atomic_address {
-    uintptr_t _value;
-} _Py_atomic_address;
-
-typedef struct _Py_atomic_int {
-    int _value;
-} _Py_atomic_int;
-
-
-static __inline__ void
-_Py_atomic_signal_fence(_Py_memory_order order)
-{
-    if (order != _Py_memory_order_relaxed)
-        __asm__ volatile("":::"memory");
-}
-
-static __inline__ void
-_Py_atomic_thread_fence(_Py_memory_order order)
-{
-    if (order != _Py_memory_order_relaxed)
-        __asm__ volatile("mfence":::"memory");
-}
-
-/* Tell the race checker about this operation's effects. */
-static __inline__ void
-_Py_ANNOTATE_MEMORY_ORDER(const volatile void *address, _Py_memory_order order)
-{
-    (void)address;              /* shut up -Wunused-parameter */
-    switch(order) {
-    case _Py_memory_order_release:
-    case _Py_memory_order_acq_rel:
-    case _Py_memory_order_seq_cst:
-        _Py_ANNOTATE_HAPPENS_BEFORE(address);
-        break;
-    case _Py_memory_order_relaxed:
-    case _Py_memory_order_acquire:
-        break;
-    }
-    switch(order) {
-    case _Py_memory_order_acquire:
-    case _Py_memory_order_acq_rel:
-    case _Py_memory_order_seq_cst:
-        _Py_ANNOTATE_HAPPENS_AFTER(address);
-        break;
-    case _Py_memory_order_relaxed:
-    case _Py_memory_order_release:
-        break;
-    }
-}
-
-#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
-    __extension__ ({ \
-        __typeof__(ATOMIC_VAL) atomic_val = ATOMIC_VAL; \
-        __typeof__(atomic_val->_value) new_val = NEW_VAL;\
-        volatile __typeof__(new_val) *volatile_data = &atomic_val->_value; \
-        _Py_memory_order order = ORDER; \
-        _Py_ANNOTATE_MEMORY_ORDER(atomic_val, order); \
-        \
-        /* Perform the operation. */ \
-        _Py_ANNOTATE_IGNORE_WRITES_BEGIN(); \
-        switch(order) { \
-        case _Py_memory_order_release: \
-            _Py_atomic_signal_fence(_Py_memory_order_release); \
-            /* fallthrough */ \
-        case _Py_memory_order_relaxed: \
-            *volatile_data = new_val; \
-            break; \
-        \
-        case _Py_memory_order_acquire: \
-        case _Py_memory_order_acq_rel: \
-        case _Py_memory_order_seq_cst: \
-            __asm__ volatile("xchg %0, %1" \
-                         : "+r"(new_val) \
-                         : "m"(atomic_val->_value) \
-                         : "memory"); \
-            break; \
-        } \
-        _Py_ANNOTATE_IGNORE_WRITES_END(); \
-    })
-
-#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
-    __extension__ ({  \
-        __typeof__(ATOMIC_VAL) atomic_val = ATOMIC_VAL; \
-        __typeof__(atomic_val->_value) result; \
-        volatile __typeof__(result) *volatile_data = &atomic_val->_value; \
-        _Py_memory_order order = ORDER; \
-        _Py_ANNOTATE_MEMORY_ORDER(atomic_val, order); \
-        \
-        /* Perform the operation. */ \
-        _Py_ANNOTATE_IGNORE_READS_BEGIN(); \
-        switch(order) { \
-        case _Py_memory_order_release: \
-        case _Py_memory_order_acq_rel: \
-        case _Py_memory_order_seq_cst: \
-            /* Loads on x86 are not releases by default, so need a */ \
-            /* thread fence. */ \
-            _Py_atomic_thread_fence(_Py_memory_order_release); \
-            break; \
-        default: \
-            /* No fence */ \
-            break; \
-        } \
-        result = *volatile_data; \
-        switch(order) { \
-        case _Py_memory_order_acquire: \
-        case _Py_memory_order_acq_rel: \
-        case _Py_memory_order_seq_cst: \
-            /* Loads on x86 are automatically acquire operations so */ \
-            /* can get by with just a compiler fence. */ \
-            _Py_atomic_signal_fence(_Py_memory_order_acquire); \
-            break; \
-        default: \
-            /* No fence */ \
-            break; \
-        } \
-        _Py_ANNOTATE_IGNORE_READS_END(); \
-        result; \
-    })
-
-#elif defined(_MSC_VER)
-/*  _Interlocked* functions provide a full memory barrier and are therefore
-    enough for acq_rel and seq_cst. If the HLE variants aren't available
-    in hardware they will fall back to a full memory barrier as well.
-
-    This might affect performance but likely only in some very specific and
-    hard to measure scenario.
-*/
-#if defined(_M_IX86) || defined(_M_X64)
-typedef enum _Py_memory_order {
-    _Py_memory_order_relaxed,
-    _Py_memory_order_acquire,
-    _Py_memory_order_release,
-    _Py_memory_order_acq_rel,
-    _Py_memory_order_seq_cst
-} _Py_memory_order;
-
-typedef struct _Py_atomic_address {
-    volatile uintptr_t _value;
-} _Py_atomic_address;
-
-typedef struct _Py_atomic_int {
-    volatile int _value;
-} _Py_atomic_int;
-
-
-#if defined(_M_X64)
-#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) \
-    switch (ORDER) { \
-    case _Py_memory_order_acquire: \
-      _InterlockedExchange64_HLEAcquire((__int64 volatile*)&((ATOMIC_VAL)->_value), (__int64)(NEW_VAL)); \
-      break; \
-    case _Py_memory_order_release: \
-      _InterlockedExchange64_HLERelease((__int64 volatile*)&((ATOMIC_VAL)->_value), (__int64)(NEW_VAL)); \
-      break; \
-    default: \
-      _InterlockedExchange64((__int64 volatile*)&((ATOMIC_VAL)->_value), (__int64)(NEW_VAL)); \
-      break; \
-  }
-#else
-#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) ((void)0);
-#endif
-
-#define _Py_atomic_store_32bit(ATOMIC_VAL, NEW_VAL, ORDER) \
-  switch (ORDER) { \
-  case _Py_memory_order_acquire: \
-    _InterlockedExchange_HLEAcquire((volatile long*)&((ATOMIC_VAL)->_value), (int)(NEW_VAL)); \
-    break; \
-  case _Py_memory_order_release: \
-    _InterlockedExchange_HLERelease((volatile long*)&((ATOMIC_VAL)->_value), (int)(NEW_VAL)); \
-    break; \
-  default: \
-    _InterlockedExchange((volatile long*)&((ATOMIC_VAL)->_value), (int)(NEW_VAL)); \
-    break; \
-  }
-
-#if defined(_M_X64)
-/*  This has to be an intptr_t for now.
-    gil_created() uses -1 as a sentinel value, if this returns
-    a uintptr_t it will do an unsigned compare and crash
-*/
-inline intptr_t _Py_atomic_load_64bit_impl(volatile uintptr_t* value, int order) {
-    __int64 old;
-    switch (order) {
-    case _Py_memory_order_acquire:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange64_HLEAcquire((volatile __int64*)value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_release:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange64_HLERelease((volatile __int64*)value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_relaxed:
-      old = *value;
-      break;
-    default:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange64((volatile __int64*)value, old, old) != old);
-      break;
-    }
-    }
-    return old;
-}
-
-#define _Py_atomic_load_64bit(ATOMIC_VAL, ORDER) \
-    _Py_atomic_load_64bit_impl((volatile uintptr_t*)&((ATOMIC_VAL)->_value), (ORDER))
-
-#else
-#define _Py_atomic_load_64bit(ATOMIC_VAL, ORDER) ((ATOMIC_VAL)->_value)
-#endif
-
-inline int _Py_atomic_load_32bit_impl(volatile int* value, int order) {
-    long old;
-    switch (order) {
-    case _Py_memory_order_acquire:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange_HLEAcquire((volatile long*)value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_release:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange_HLERelease((volatile long*)value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_relaxed:
-      old = *value;
-      break;
-    default:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange((volatile long*)value, old, old) != old);
-      break;
-    }
-    }
-    return old;
-}
-
-#define _Py_atomic_load_32bit(ATOMIC_VAL, ORDER) \
-    _Py_atomic_load_32bit_impl((volatile int*)&((ATOMIC_VAL)->_value), (ORDER))
-
-#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
-  if (sizeof((ATOMIC_VAL)->_value) == 8) { \
-    _Py_atomic_store_64bit((ATOMIC_VAL), NEW_VAL, ORDER) } else { \
-    _Py_atomic_store_32bit((ATOMIC_VAL), NEW_VAL, ORDER) }
-
-#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
-  ( \
-    sizeof((ATOMIC_VAL)->_value) == 8 ? \
-    _Py_atomic_load_64bit((ATOMIC_VAL), ORDER) : \
-    _Py_atomic_load_32bit((ATOMIC_VAL), ORDER) \
-  )
-#elif defined(_M_ARM) || defined(_M_ARM64)
-typedef enum _Py_memory_order {
-    _Py_memory_order_relaxed,
-    _Py_memory_order_acquire,
-    _Py_memory_order_release,
-    _Py_memory_order_acq_rel,
-    _Py_memory_order_seq_cst
-} _Py_memory_order;
-
-typedef struct _Py_atomic_address {
-    volatile uintptr_t _value;
-} _Py_atomic_address;
-
-typedef struct _Py_atomic_int {
-    volatile int _value;
-} _Py_atomic_int;
-
-
-#if defined(_M_ARM64)
-#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) \
-    switch (ORDER) { \
-    case _Py_memory_order_acquire: \
-      _InterlockedExchange64_acq((__int64 volatile*)&((ATOMIC_VAL)->_value), (__int64)NEW_VAL); \
-      break; \
-    case _Py_memory_order_release: \
-      _InterlockedExchange64_rel((__int64 volatile*)&((ATOMIC_VAL)->_value), (__int64)NEW_VAL); \
-      break; \
-    default: \
-      _InterlockedExchange64((__int64 volatile*)&((ATOMIC_VAL)->_value), (__int64)NEW_VAL); \
-      break; \
-  }
-#else
-#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) ((void)0);
-#endif
-
-#define _Py_atomic_store_32bit(ATOMIC_VAL, NEW_VAL, ORDER) \
-  switch (ORDER) { \
-  case _Py_memory_order_acquire: \
-    _InterlockedExchange_acq((volatile long*)&((ATOMIC_VAL)->_value), (int)NEW_VAL); \
-    break; \
-  case _Py_memory_order_release: \
-    _InterlockedExchange_rel((volatile long*)&((ATOMIC_VAL)->_value), (int)NEW_VAL); \
-    break; \
-  default: \
-    _InterlockedExchange((volatile long*)&((ATOMIC_VAL)->_value), (int)NEW_VAL); \
-    break; \
-  }
-
-#if defined(_M_ARM64)
-/*  This has to be an intptr_t for now.
-    gil_created() uses -1 as a sentinel value, if this returns
-    a uintptr_t it will do an unsigned compare and crash
-*/
-inline intptr_t _Py_atomic_load_64bit_impl(volatile uintptr_t* value, int order) {
-    uintptr_t old;
-    switch (order) {
-    case _Py_memory_order_acquire:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange64_acq(value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_release:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange64_rel(value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_relaxed:
-      old = *value;
-      break;
-    default:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange64(value, old, old) != old);
-      break;
-    }
-    }
-    return old;
-}
-
-#define _Py_atomic_load_64bit(ATOMIC_VAL, ORDER) \
-    _Py_atomic_load_64bit_impl((volatile uintptr_t*)&((ATOMIC_VAL)->_value), (ORDER))
-
-#else
-#define _Py_atomic_load_64bit(ATOMIC_VAL, ORDER) ((ATOMIC_VAL)->_value)
-#endif
-
-inline int _Py_atomic_load_32bit_impl(volatile int* value, int order) {
-    int old;
-    switch (order) {
-    case _Py_memory_order_acquire:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange_acq(value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_release:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange_rel(value, old, old) != old);
-      break;
-    }
-    case _Py_memory_order_relaxed:
-      old = *value;
-      break;
-    default:
-    {
-      do {
-        old = *value;
-      } while(_InterlockedCompareExchange(value, old, old) != old);
-      break;
-    }
-    }
-    return old;
-}
-
-#define _Py_atomic_load_32bit(ATOMIC_VAL, ORDER) \
-    _Py_atomic_load_32bit_impl((volatile int*)&((ATOMIC_VAL)->_value), (ORDER))
-
-#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
-  if (sizeof((ATOMIC_VAL)->_value) == 8) { \
-    _Py_atomic_store_64bit((ATOMIC_VAL), (NEW_VAL), (ORDER)) } else { \
-    _Py_atomic_store_32bit((ATOMIC_VAL), (NEW_VAL), (ORDER)) }
-
-#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
-  ( \
-    sizeof((ATOMIC_VAL)->_value) == 8 ? \
-    _Py_atomic_load_64bit((ATOMIC_VAL), (ORDER)) : \
-    _Py_atomic_load_32bit((ATOMIC_VAL), (ORDER)) \
-  )
-#endif
-#else  /* !gcc x86  !_msc_ver */
-typedef enum _Py_memory_order {
-    _Py_memory_order_relaxed,
-    _Py_memory_order_acquire,
-    _Py_memory_order_release,
-    _Py_memory_order_acq_rel,
-    _Py_memory_order_seq_cst
-} _Py_memory_order;
-
-typedef struct _Py_atomic_address {
-    uintptr_t _value;
-} _Py_atomic_address;
-
-typedef struct _Py_atomic_int {
-    int _value;
-} _Py_atomic_int;
-/* Fall back to other compilers and processors by assuming that simple
-   volatile accesses are atomic.  This is false, so people should port
-   this. */
-#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) ((void)0)
-#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) ((void)0)
-#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
-    ((ATOMIC_VAL)->_value = NEW_VAL)
-#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
-    ((ATOMIC_VAL)->_value)
-#endif
-
-/* Standardized shortcuts. */
-#define _Py_atomic_store(ATOMIC_VAL, NEW_VAL) \
-    _Py_atomic_store_explicit((ATOMIC_VAL), (NEW_VAL), _Py_memory_order_seq_cst)
-#define _Py_atomic_load(ATOMIC_VAL) \
-    _Py_atomic_load_explicit((ATOMIC_VAL), _Py_memory_order_seq_cst)
-
-/* Python-local extensions */
-
-#define _Py_atomic_store_relaxed(ATOMIC_VAL, NEW_VAL) \
-    _Py_atomic_store_explicit((ATOMIC_VAL), (NEW_VAL), _Py_memory_order_relaxed)
-#define _Py_atomic_load_relaxed(ATOMIC_VAL) \
-    _Py_atomic_load_explicit((ATOMIC_VAL), _Py_memory_order_relaxed)
-
-#ifdef __cplusplus
-}
-#endif
-#endif  /* Py_ATOMIC_H */
diff --git a/Include/internal/pycore_atomic_funcs.h b/Include/internal/pycore_atomic_funcs.h
deleted file mode 100644
index a708789cea733b..00000000000000
--- a/Include/internal/pycore_atomic_funcs.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/* Atomic functions: similar to pycore_atomic.h, but don't need
-   to declare variables as atomic.
-
-   Py_ssize_t type:
-
-   * value = _Py_atomic_size_get(&var)
-   * _Py_atomic_size_set(&var, value)
-
-   Use sequentially-consistent ordering (__ATOMIC_SEQ_CST memory order):
-   enforce total ordering with all other atomic functions.
-*/
-#ifndef Py_ATOMIC_FUNC_H
-#define Py_ATOMIC_FUNC_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef Py_BUILD_CORE
-#  error "this header requires Py_BUILD_CORE define"
-#endif
-
-#if defined(_MSC_VER)
-#  include <intrin.h>             // _InterlockedExchange()
-#endif
-
-
-// Use builtin atomic operations in GCC >= 4.7 and clang
-#ifdef HAVE_BUILTIN_ATOMIC
-
-static inline Py_ssize_t _Py_atomic_size_get(Py_ssize_t *var)
-{
-    return __atomic_load_n(var, __ATOMIC_SEQ_CST);
-}
-
-static inline void _Py_atomic_size_set(Py_ssize_t *var, Py_ssize_t value)
-{
-    __atomic_store_n(var, value, __ATOMIC_SEQ_CST);
-}
-
-#elif defined(_MSC_VER)
-
-static inline Py_ssize_t _Py_atomic_size_get(Py_ssize_t *var)
-{
-#if SIZEOF_VOID_P == 8
-    Py_BUILD_ASSERT(sizeof(__int64) == sizeof(*var));
-    volatile __int64 *volatile_var = (volatile __int64 *)var;
-    __int64 old;
-    do {
-        old = *volatile_var;
-    } while(_InterlockedCompareExchange64(volatile_var, old, old) != old);
-#else
-    Py_BUILD_ASSERT(sizeof(long) == sizeof(*var));
-    volatile long *volatile_var = (volatile long *)var;
-    long old;
-    do {
-        old = *volatile_var;
-    } while(_InterlockedCompareExchange(volatile_var, old, old) != old);
-#endif
-    return old;
-}
-
-static inline void _Py_atomic_size_set(Py_ssize_t *var, Py_ssize_t value)
-{
-#if SIZEOF_VOID_P == 8
-    Py_BUILD_ASSERT(sizeof(__int64) == sizeof(*var));
-    volatile __int64 *volatile_var = (volatile __int64 *)var;
-    _InterlockedExchange64(volatile_var, value);
-#else
-    Py_BUILD_ASSERT(sizeof(long) == sizeof(*var));
-    volatile long *volatile_var = (volatile long *)var;
-    _InterlockedExchange(volatile_var, value);
-#endif
-}
-
-#else
-// Fallback implementation using volatile
-
-static inline Py_ssize_t _Py_atomic_size_get(Py_ssize_t *var)
-{
-    volatile Py_ssize_t *volatile_var = (volatile Py_ssize_t *)var;
-    return *volatile_var;
-}
-
-static inline void _Py_atomic_size_set(Py_ssize_t *var, Py_ssize_t value)
-{
-    volatile Py_ssize_t *volatile_var = (volatile Py_ssize_t *)var;
-    *volatile_var = value;
-}
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-#endif  /* Py_ATOMIC_FUNC_H */
diff --git a/Include/internal/pycore_bitutils.h b/Include/internal/pycore_bitutils.h
index e6bf61ef425bd8..50f69377523818 100644
--- a/Include/internal/pycore_bitutils.h
+++ b/Include/internal/pycore_bitutils.h
@@ -26,10 +26,10 @@ extern "C" {
 #endif
 
 #ifdef _MSC_VER
-   /* Get _byteswap_ushort(), _byteswap_ulong(), _byteswap_uint64() */
-#  include <intrin.h>
+#  include <intrin.h>             // _byteswap_uint64()
 #endif
 
+
 static inline uint16_t
 _Py_bswap16(uint16_t word)
 {
diff --git a/Include/internal/pycore_blocks_output_buffer.h b/Include/internal/pycore_blocks_output_buffer.h
index 28cf6fba4eeba2..573e10359b7bd2 100644
--- a/Include/internal/pycore_blocks_output_buffer.h
+++ b/Include/internal/pycore_blocks_output_buffer.h
@@ -40,6 +40,10 @@ extern "C" {
 
 #include "Python.h"
 
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
 typedef struct {
     // List of bytes objects
     PyObject *list;
@@ -314,4 +318,4 @@ _BlocksOutputBuffer_OnError(_BlocksOutputBuffer *buffer)
 #ifdef __cplusplus
 }
 #endif
-#endif /* Py_INTERNAL_BLOCKS_OUTPUT_BUFFER_H */
\ No newline at end of file
+#endif /* Py_INTERNAL_BLOCKS_OUTPUT_BUFFER_H */
diff --git a/Include/internal/pycore_bytesobject.h b/Include/internal/pycore_bytesobject.h
index d36fa9569d64a5..94d421a9eb742a 100644
--- a/Include/internal/pycore_bytesobject.h
+++ b/Include/internal/pycore_bytesobject.h
@@ -8,39 +8,144 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+extern PyObject* _PyBytes_FormatEx(
+    const char *format,
+    Py_ssize_t format_len,
+    PyObject *args,
+    int use_bytearray);
 
-/* Substring Search.
+extern PyObject* _PyBytes_FromHex(
+    PyObject *string,
+    int use_bytearray);
 
-   Returns the index of the first occurrence of
-   a substring ("needle") in a larger text ("haystack").
-   If the needle is not found, return -1.
-   If the needle is found, add offset to the index.
-*/
+// Helper for PyBytes_DecodeEscape that detects invalid escape chars.
+// Export for test_peg_generator.
+PyAPI_FUNC(PyObject*) _PyBytes_DecodeEscape(const char *, Py_ssize_t,
+                                            const char *, const char **);
 
+/* _PyBytes_Join(sep, x) is like sep.join(x).  sep must be PyBytesObject*,
+   x must be an iterable object. */
+extern PyObject* _PyBytes_Join(PyObject *sep, PyObject *x);
+
+
+// Substring Search.
+//
+// Returns the index of the first occurrence of
+// a substring ("needle") in a larger text ("haystack").
+// If the needle is not found, return -1.
+// If the needle is found, add offset to the index.
+//
+// Export for 'mmap' shared extension.
 PyAPI_FUNC(Py_ssize_t)
 _PyBytes_Find(const char *haystack, Py_ssize_t len_haystack,
               const char *needle, Py_ssize_t len_needle,
               Py_ssize_t offset);
 
-/* Same as above, but search right-to-left */
+// Same as above, but search right-to-left.
+// Export for 'mmap' shared extension.
 PyAPI_FUNC(Py_ssize_t)
 _PyBytes_ReverseFind(const char *haystack, Py_ssize_t len_haystack,
                      const char *needle, Py_ssize_t len_needle,
                      Py_ssize_t offset);
 
 
-/** Helper function to implement the repeat and inplace repeat methods on a buffer
- *
- * len_dest is assumed to be an integer multiple of len_src.
- * If src equals dest, then assume the operation is inplace.
- *
- * This method repeately doubles the number of bytes copied to reduce
- * the number of invocations of memcpy.
- */
+// Helper function to implement the repeat and inplace repeat methods on a
+// buffer.
+//
+// len_dest is assumed to be an integer multiple of len_src.
+// If src equals dest, then assume the operation is inplace.
+//
+// This method repeately doubles the number of bytes copied to reduce
+// the number of invocations of memcpy.
+//
+// Export for 'array' shared extension.
 PyAPI_FUNC(void)
 _PyBytes_Repeat(char* dest, Py_ssize_t len_dest,
     const char* src, Py_ssize_t len_src);
 
+/* --- _PyBytesWriter ----------------------------------------------------- */
+
+/* The _PyBytesWriter structure is big: it contains an embedded "stack buffer".
+   A _PyBytesWriter variable must be declared at the end of variables in a
+   function to optimize the memory allocation on the stack. */
+typedef struct {
+    /* bytes, bytearray or NULL (when the small buffer is used) */
+    PyObject *buffer;
+
+    /* Number of allocated size. */
+    Py_ssize_t allocated;
+
+    /* Minimum number of allocated bytes,
+       incremented by _PyBytesWriter_Prepare() */
+    Py_ssize_t min_size;
+
+    /* If non-zero, use a bytearray instead of a bytes object for buffer. */
+    int use_bytearray;
+
+    /* If non-zero, overallocate the buffer (default: 0).
+       This flag must be zero if use_bytearray is non-zero. */
+    int overallocate;
+
+    /* Stack buffer */
+    int use_small_buffer;
+    char small_buffer[512];
+} _PyBytesWriter;
+
+/* Initialize a bytes writer
+
+   By default, the overallocation is disabled. Set the overallocate attribute
+   to control the allocation of the buffer.
+
+   Export _PyBytesWriter API for '_pickle' shared extension. */
+PyAPI_FUNC(void) _PyBytesWriter_Init(_PyBytesWriter *writer);
+
+/* Get the buffer content and reset the writer.
+   Return a bytes object, or a bytearray object if use_bytearray is non-zero.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(PyObject *) _PyBytesWriter_Finish(_PyBytesWriter *writer,
+    void *str);
+
+/* Deallocate memory of a writer (clear its internal buffer). */
+PyAPI_FUNC(void) _PyBytesWriter_Dealloc(_PyBytesWriter *writer);
+
+/* Allocate the buffer to write size bytes.
+   Return the pointer to the beginning of buffer data.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_Alloc(_PyBytesWriter *writer,
+    Py_ssize_t size);
+
+/* Ensure that the buffer is large enough to write *size* bytes.
+   Add size to the writer minimum size (min_size attribute).
+
+   str is the current pointer inside the buffer.
+   Return the updated current pointer inside the buffer.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_Prepare(_PyBytesWriter *writer,
+    void *str,
+    Py_ssize_t size);
+
+/* Resize the buffer to make it larger.
+   The new buffer may be larger than size bytes because of overallocation.
+   Return the updated current pointer inside the buffer.
+   Raise an exception and return NULL on error.
+
+   Note: size must be greater than the number of allocated bytes in the writer.
+
+   This function doesn't use the writer minimum size (min_size attribute).
+
+   See also _PyBytesWriter_Prepare().
+   */
+PyAPI_FUNC(void*) _PyBytesWriter_Resize(_PyBytesWriter *writer,
+    void *str,
+    Py_ssize_t size);
+
+/* Write bytes.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_WriteBytes(_PyBytesWriter *writer,
+    void *str,
+    const void *bytes,
+    Py_ssize_t size);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_call.h b/Include/internal/pycore_call.h
index 5d9342b562b002..c92028a01299e2 100644
--- a/Include/internal/pycore_call.h
+++ b/Include/internal/pycore_call.h
@@ -8,31 +8,107 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "pycore_identifier.h"    // _Py_Identifier
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 
-PyAPI_FUNC(PyObject *) _PyObject_Call_Prepend(
+/* Suggested size (number of positional arguments) for arrays of PyObject*
+   allocated on a C stack to avoid allocating memory on the heap memory. Such
+   array is used to pass positional arguments to call functions of the
+   PyObject_Vectorcall() family.
+
+   The size is chosen to not abuse the C stack and so limit the risk of stack
+   overflow. The size is also chosen to allow using the small stack for most
+   function calls of the Python standard library. On 64-bit CPU, it allocates
+   40 bytes on the stack. */
+#define _PY_FASTCALL_SMALL_STACK 5
+
+
+// Export for 'math' shared extension, used via _PyObject_VectorcallTstate()
+// static inline function.
+PyAPI_FUNC(PyObject*) _Py_CheckFunctionResult(
+    PyThreadState *tstate,
+    PyObject *callable,
+    PyObject *result,
+    const char *where);
+
+extern PyObject* _PyObject_Call_Prepend(
     PyThreadState *tstate,
     PyObject *callable,
     PyObject *obj,
     PyObject *args,
     PyObject *kwargs);
 
-PyAPI_FUNC(PyObject *) _PyObject_FastCallDictTstate(
+extern PyObject* _PyObject_VectorcallDictTstate(
     PyThreadState *tstate,
     PyObject *callable,
     PyObject *const *args,
     size_t nargsf,
     PyObject *kwargs);
 
-PyAPI_FUNC(PyObject *) _PyObject_Call(
+extern PyObject* _PyObject_Call(
     PyThreadState *tstate,
     PyObject *callable,
     PyObject *args,
     PyObject *kwargs);
 
 extern PyObject * _PyObject_CallMethodFormat(
-        PyThreadState *tstate, PyObject *callable, const char *format, ...);
+    PyThreadState *tstate,
+    PyObject *callable,
+    const char *format,
+    ...);
+
+// Export for 'array' shared extension
+PyAPI_FUNC(PyObject*) _PyObject_CallMethod(
+    PyObject *obj,
+    PyObject *name,
+    const char *format, ...);
+
+extern PyObject* _PyObject_CallMethodIdObjArgs(
+    PyObject *obj,
+    _Py_Identifier *name,
+    ...);
+
+static inline PyObject *
+_PyObject_VectorcallMethodId(
+    _Py_Identifier *name, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames)
+{
+    PyObject *oname = _PyUnicode_FromId(name); /* borrowed */
+    if (!oname) {
+        return _Py_NULL;
+    }
+    return PyObject_VectorcallMethod(oname, args, nargsf, kwnames);
+}
+
+static inline PyObject *
+_PyObject_CallMethodIdNoArgs(PyObject *self, _Py_Identifier *name)
+{
+    size_t nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
+    return _PyObject_VectorcallMethodId(name, &self, nargsf, _Py_NULL);
+}
+
+static inline PyObject *
+_PyObject_CallMethodIdOneArg(PyObject *self, _Py_Identifier *name, PyObject *arg)
+{
+    PyObject *args[2] = {self, arg};
+    size_t nargsf = 2 | PY_VECTORCALL_ARGUMENTS_OFFSET;
+    assert(arg != NULL);
+    return _PyObject_VectorcallMethodId(name, args, nargsf, _Py_NULL);
+}
+
+
+/* === Vectorcall protocol (PEP 590) ============================= */
 
+// Call callable using tp_call. Arguments are like PyObject_Vectorcall(),
+// except that nargs is plainly the number of arguments without flags.
+//
+// Export for 'math' shared extension, used via _PyObject_VectorcallTstate()
+// static inline function.
+PyAPI_FUNC(PyObject*) _PyObject_MakeTpCall(
+    PyThreadState *tstate,
+    PyObject *callable,
+    PyObject *const *args, Py_ssize_t nargs,
+    PyObject *keywords);
 
 // Static inline variant of public PyVectorcall_Function().
 static inline vectorcallfunc
@@ -109,23 +185,19 @@ _PyObject_CallNoArgs(PyObject *func) {
 }
 
 
-static inline PyObject *
-_PyObject_FastCallTstate(PyThreadState *tstate, PyObject *func, PyObject *const *args, Py_ssize_t nargs)
-{
-    EVAL_CALL_STAT_INC_IF_FUNCTION(EVAL_CALL_API, func);
-    return _PyObject_VectorcallTstate(tstate, func, args, (size_t)nargs, NULL);
-}
-
-PyObject *const *
+extern PyObject *const *
 _PyStack_UnpackDict(PyThreadState *tstate,
     PyObject *const *args, Py_ssize_t nargs,
     PyObject *kwargs, PyObject **p_kwnames);
 
-void
-_PyStack_UnpackDict_Free(PyObject *const *stack, Py_ssize_t nargs,
+extern void _PyStack_UnpackDict_Free(
+    PyObject *const *stack,
+    Py_ssize_t nargs,
     PyObject *kwnames);
 
-void _PyStack_UnpackDict_FreeNoDecRef(PyObject *const *stack, PyObject *kwnames);
+extern void _PyStack_UnpackDict_FreeNoDecRef(
+    PyObject *const *stack,
+    PyObject *kwnames);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_capsule.h b/Include/internal/pycore_capsule.h
new file mode 100644
index 00000000000000..aa2c67f3a8f002
--- /dev/null
+++ b/Include/internal/pycore_capsule.h
@@ -0,0 +1,17 @@
+#ifndef Py_INTERNAL_PYCAPSULE_H
+#define Py_INTERNAL_PYCAPSULE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+// Export for '_socket' shared extension
+PyAPI_FUNC(int) _PyCapsule_SetTraverse(PyObject *op, traverseproc traverse_func, inquiry clear_func);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_PYCAPSULE_H */
diff --git a/Include/internal/pycore_ceval.h b/Include/internal/pycore_ceval.h
index 3c8b368bd2af4e..64fb4034669e19 100644
--- a/Include/internal/pycore_ceval.h
+++ b/Include/internal/pycore_ceval.h
@@ -8,27 +8,54 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "dynamic_annotations.h" // _Py_ANNOTATE_RWLOCK_CREATE
+
+#include "pycore_interp.h"        // PyInterpreterState.eval_frame
+#include "pycore_pystate.h"       // _PyThreadState_GET()
+
 /* Forward declarations */
 struct pyruntimestate;
 struct _ceval_runtime_state;
 
+// Export for '_lsprof' shared extension
+PyAPI_FUNC(int) _PyEval_SetProfile(PyThreadState *tstate, Py_tracefunc func, PyObject *arg);
+
+extern int _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg);
+
+extern int _PyEval_SetOpcodeTrace(PyFrameObject *f, bool enable);
+
+// Helper to look up a builtin object
+// Export for 'array' shared extension
+PyAPI_FUNC(PyObject*) _PyEval_GetBuiltin(PyObject *);
+
+extern PyObject* _PyEval_GetBuiltinId(_Py_Identifier *);
+
+extern void _PyEval_SetSwitchInterval(unsigned long microseconds);
+extern unsigned long _PyEval_GetSwitchInterval(void);
+
+// Export for '_queue' shared extension
+PyAPI_FUNC(int) _PyEval_MakePendingCalls(PyThreadState *);
+
 #ifndef Py_DEFAULT_RECURSION_LIMIT
 #  define Py_DEFAULT_RECURSION_LIMIT 1000
 #endif
 
-#include "pycore_interp.h"        // PyInterpreterState.eval_frame
-#include "pycore_pystate.h"       // _PyThreadState_GET()
+extern void _Py_FinishPendingCalls(PyThreadState *tstate);
+extern void _PyEval_InitState(PyInterpreterState *);
+extern void _PyEval_SignalReceived(PyInterpreterState *interp);
 
+// bitwise flags:
+#define _Py_PENDING_MAINTHREADONLY 1
+#define _Py_PENDING_RAWFREE 2
 
-extern void _Py_FinishPendingCalls(PyThreadState *tstate);
-extern void _PyEval_InitState(PyInterpreterState *, PyThread_type_lock);
-extern void _PyEval_FiniState(struct _ceval_state *ceval);
-PyAPI_FUNC(void) _PyEval_SignalReceived(PyInterpreterState *interp);
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(int) _PyEval_AddPendingCall(
     PyInterpreterState *interp,
-    int (*func)(void *),
-    void *arg);
-PyAPI_FUNC(void) _PyEval_SignalAsyncExc(PyInterpreterState *interp);
+    _Py_pending_call_func func,
+    void *arg,
+    int flags);
+
+extern void _PyEval_SignalAsyncExc(PyInterpreterState *interp);
 #ifdef HAVE_FORK
 extern PyStatus _PyEval_ReInitThreads(PyThreadState *tstate);
 #endif
@@ -73,6 +100,7 @@ extern int _PyPerfTrampoline_SetCallbacks(_PyPerf_Callbacks *);
 extern void _PyPerfTrampoline_GetCallbacks(_PyPerf_Callbacks *);
 extern int _PyPerfTrampoline_Init(int activate);
 extern int _PyPerfTrampoline_Fini(void);
+extern void _PyPerfTrampoline_FreeArenas(void);
 extern int _PyIsPerfTrampolineActive(void);
 extern PyStatus _PyPerfTrampoline_AfterFork_Child(void);
 #ifdef PY_HAVE_PERF_TRAMPOLINE
@@ -100,8 +128,7 @@ extern PyStatus _PyEval_InitGIL(PyThreadState *tstate, int own_gil);
 extern void _PyEval_FiniGIL(PyInterpreterState *interp);
 
 extern void _PyEval_AcquireLock(PyThreadState *tstate);
-extern void _PyEval_ReleaseLock(PyThreadState *tstate);
-extern PyThreadState * _PyThreadState_SwapNoGIL(PyThreadState *);
+extern void _PyEval_ReleaseLock(PyInterpreterState *, PyThreadState *);
 
 extern void _PyEval_DeactivateOpCache(void);
 
@@ -121,6 +148,8 @@ static inline int _Py_MakeRecCheck(PyThreadState *tstate) {
 }
 #endif
 
+// Export for '_json' shared extension, used via _Py_EnterRecursiveCall()
+// static inline function.
 PyAPI_FUNC(int) _Py_CheckRecursiveCall(
     PyThreadState *tstate,
     const char *where);
@@ -151,8 +180,57 @@ extern struct _PyInterpreterFrame* _PyEval_GetFrame(void);
 
 extern PyObject* _Py_MakeCoro(PyFunctionObject *func);
 
+/* Handle signals, pending calls, GIL drop request
+   and asynchronous exception */
 extern int _Py_HandlePending(PyThreadState *tstate);
 
+extern PyObject * _PyEval_GetFrameLocals(void);
+
+extern const binaryfunc _PyEval_BinaryOps[];
+int _PyEval_CheckExceptStarTypeValid(PyThreadState *tstate, PyObject* right);
+int _PyEval_CheckExceptTypeValid(PyThreadState *tstate, PyObject* right);
+int _PyEval_ExceptionGroupMatch(PyObject* exc_value, PyObject *match_type, PyObject **match, PyObject **rest);
+void _PyEval_FormatAwaitableError(PyThreadState *tstate, PyTypeObject *type, int oparg);
+void _PyEval_FormatExcCheckArg(PyThreadState *tstate, PyObject *exc, const char *format_str, PyObject *obj);
+void _PyEval_FormatExcUnbound(PyThreadState *tstate, PyCodeObject *co, int oparg);
+void _PyEval_FormatKwargsError(PyThreadState *tstate, PyObject *func, PyObject *kwargs);
+PyObject *_PyEval_MatchClass(PyThreadState *tstate, PyObject *subject, PyObject *type, Py_ssize_t nargs, PyObject *kwargs);
+PyObject *_PyEval_MatchKeys(PyThreadState *tstate, PyObject *map, PyObject *keys);
+int _PyEval_UnpackIterable(PyThreadState *tstate, PyObject *v, int argcnt, int argcntafter, PyObject **sp);
+void _PyEval_FrameClearAndPop(PyThreadState *tstate, _PyInterpreterFrame *frame);
+
+
+#define _PY_GIL_DROP_REQUEST_BIT 0
+#define _PY_SIGNALS_PENDING_BIT 1
+#define _PY_CALLS_TO_DO_BIT 2
+#define _PY_ASYNC_EXCEPTION_BIT 3
+#define _PY_GC_SCHEDULED_BIT 4
+
+/* Reserve a few bits for future use */
+#define _PY_EVAL_EVENTS_BITS 8
+#define _PY_EVAL_EVENTS_MASK ((1 << _PY_EVAL_EVENTS_BITS)-1)
+
+static inline void
+_Py_set_eval_breaker_bit(PyInterpreterState *interp, uint32_t bit, uint32_t set)
+{
+    assert(set == 0 || set == 1);
+    uintptr_t to_set = set << bit;
+    uintptr_t mask = ((uintptr_t)1) << bit;
+    uintptr_t old = _Py_atomic_load_uintptr(&interp->ceval.eval_breaker);
+    if ((old & mask) == to_set) {
+        return;
+    }
+    uintptr_t new;
+    do {
+        new = (old & ~mask) | to_set;
+    } while (!_Py_atomic_compare_exchange_uintptr(&interp->ceval.eval_breaker, &old, new));
+}
+
+static inline bool
+_Py_eval_breaker_bit_is_set(PyInterpreterState *interp, int32_t bit)
+{
+    return _Py_atomic_load_uintptr_relaxed(&interp->ceval.eval_breaker) & (((uintptr_t)1) << bit);
+}
 
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_ceval_state.h b/Include/internal/pycore_ceval_state.h
index b352801673c40a..28738980eb49be 100644
--- a/Include/internal/pycore_ceval_state.h
+++ b/Include/internal/pycore_ceval_state.h
@@ -8,11 +8,27 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-
-#include "pycore_atomic.h"          /* _Py_atomic_address */
+#include "pycore_lock.h"            // PyMutex
 #include "pycore_gil.h"             // struct _gil_runtime_state
 
 
+typedef int (*_Py_pending_call_func)(void *);
+
+struct _pending_calls {
+    int busy;
+    PyMutex mutex;
+    /* Request for running pending calls. */
+    int32_t calls_to_do;
+#define NPENDINGCALLS 32
+    struct _pending_call {
+        _Py_pending_call_func func;
+        void *arg;
+        int flags;
+    } calls[NPENDINGCALLS];
+    int first;
+    int last;
+};
+
 typedef enum {
     PERF_STATUS_FAILED = -1,  // Perf trampoline is in an invalid state
     PERF_STATUS_NO_INIT = 0,  // Perf trampoline is not initialized
@@ -40,15 +56,13 @@ struct _ceval_runtime_state {
         struct code_arena_st *code_arena;
         struct trampoline_api_st trampoline_api;
         FILE *map_file;
+        Py_ssize_t persist_after_fork;
 #else
         int _not_used;
 #endif
     } perf;
-    /* Request for checking signals. It is shared by all interpreters (see
-       bpo-40513). Any thread of any interpreter can receive a signal, but only
-       the main thread of the main interpreter can handle signals: see
-       _Py_ThreadCanHandleSignals(). */
-    _Py_atomic_int signals_pending;
+    /* Pending calls to be made only on the main thread. */
+    struct _pending_calls pending_mainthread;
 };
 
 #ifdef PY_HAVE_PERF_TRAMPOLINE
@@ -56,41 +70,24 @@ struct _ceval_runtime_state {
     { \
         .status = PERF_STATUS_NO_INIT, \
         .extra_code_index = -1, \
+        .persist_after_fork = 0, \
     }
 #else
 # define _PyEval_RUNTIME_PERF_INIT {0}
 #endif
 
 
-struct _pending_calls {
-    int busy;
-    PyThread_type_lock lock;
-    /* Request for running pending calls. */
-    _Py_atomic_int calls_to_do;
-    /* Request for looking at the `async_exc` field of the current
-       thread state.
-       Guarded by the GIL. */
-    int async_exc;
-#define NPENDINGCALLS 32
-    struct {
-        int (*func)(void *);
-        void *arg;
-    } calls[NPENDINGCALLS];
-    int first;
-    int last;
-};
-
 struct _ceval_state {
+    /* This single variable consolidates all requests to break out of
+     * the fast path in the eval loop.
+     * It is by far the hottest field in this struct and
+     * should be placed at the beginning. */
+    uintptr_t eval_breaker;
+    /* Avoid false sharing */
+    int64_t padding[7];
     int recursion_limit;
     struct _gil_runtime_state *gil;
     int own_gil;
-    /* This single variable consolidates all requests to break out of
-       the fast path in the eval loop. */
-    _Py_atomic_int eval_breaker;
-    /* Request for dropping the GIL */
-    _Py_atomic_int gil_drop_request;
-    /* The GC is ready to be executed */
-    _Py_atomic_int gc_scheduled;
     struct _pending_calls pending;
 };
 
diff --git a/Include/internal/pycore_code.h b/Include/internal/pycore_code.h
index 75a23f3f5af560..73df6c3568ffe0 100644
--- a/Include/internal/pycore_code.h
+++ b/Include/internal/pycore_code.h
@@ -4,6 +4,10 @@
 extern "C" {
 #endif
 
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
 #define CODE_MAX_WATCHERS 8
 
 /* PEP 659
@@ -19,9 +23,9 @@ extern "C" {
 
 typedef struct {
     uint16_t counter;
-    uint16_t index;
     uint16_t module_keys_version;
     uint16_t builtin_keys_version;
+    uint16_t index;
 } _PyLoadGlobalCache;
 
 #define INLINE_CACHE_ENTRIES_LOAD_GLOBAL CACHE_ENTRIES(_PyLoadGlobalCache)
@@ -101,6 +105,13 @@ typedef struct {
 
 #define INLINE_CACHE_ENTRIES_SEND CACHE_ENTRIES(_PySendCache)
 
+typedef struct {
+    uint16_t counter;
+    uint16_t version[2];
+} _PyToBoolCache;
+
+#define INLINE_CACHE_ENTRIES_TO_BOOL CACHE_ENTRIES(_PyToBoolCache)
+
 // Borrowed references to common callables:
 struct callable_cache {
     PyObject *isinstance;
@@ -196,8 +207,8 @@ struct _PyCodeConstructor {
 // back to a regular function signature.  Regardless, this approach
 // wouldn't be appropriate if this weren't a strictly internal API.
 // (See the comments in https://github.com/python/cpython/pull/26258.)
-PyAPI_FUNC(int) _PyCode_Validate(struct _PyCodeConstructor *);
-PyAPI_FUNC(PyCodeObject *) _PyCode_New(struct _PyCodeConstructor *);
+extern int _PyCode_Validate(struct _PyCodeConstructor *);
+extern PyCodeObject* _PyCode_New(struct _PyCodeConstructor *);
 
 
 /* Private API */
@@ -222,6 +233,11 @@ extern void _PyLineTable_InitAddressRange(
 extern int _PyLineTable_NextAddressRange(PyCodeAddressRange *range);
 extern int _PyLineTable_PreviousAddressRange(PyCodeAddressRange *range);
 
+/** API for executors */
+extern void _PyCode_Clear_Executors(PyCodeObject *code);
+
+#define ENABLE_SPECIALIZATION 1
+
 /* Specialization functions */
 
 extern void _Py_Specialize_LoadSuperAttr(PyObject *global_super, PyObject *cls,
@@ -237,7 +253,7 @@ extern void _Py_Specialize_BinarySubscr(PyObject *sub, PyObject *container,
 extern void _Py_Specialize_StoreSubscr(PyObject *container, PyObject *sub,
                                        _Py_CODEUNIT *instr);
 extern void _Py_Specialize_Call(PyObject *callable, _Py_CODEUNIT *instr,
-                                int nargs, PyObject *kwnames);
+                                int nargs);
 extern void _Py_Specialize_BinaryOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr,
                                     int oparg, PyObject **locals);
 extern void _Py_Specialize_CompareOp(PyObject *lhs, PyObject *rhs,
@@ -246,6 +262,7 @@ extern void _Py_Specialize_UnpackSequence(PyObject *seq, _Py_CODEUNIT *instr,
                                           int oparg);
 extern void _Py_Specialize_ForIter(PyObject *iter, _Py_CODEUNIT *instr, int oparg);
 extern void _Py_Specialize_Send(PyObject *receiver, _Py_CODEUNIT *instr);
+extern void _Py_Specialize_ToBool(PyObject *value, _Py_CODEUNIT *instr);
 
 /* Finalizer function for static codeobjects used in deepfreeze.py */
 extern void _PyStaticCode_Fini(PyCodeObject *co);
@@ -254,19 +271,32 @@ extern int _PyStaticCode_Init(PyCodeObject *co);
 
 #ifdef Py_STATS
 
+#include "pycore_bitutils.h"  // _Py_bit_length
 
-#define STAT_INC(opname, name) do { if (_py_stats) _py_stats->opcode_stats[opname].specialization.name++; } while (0)
-#define STAT_DEC(opname, name) do { if (_py_stats) _py_stats->opcode_stats[opname].specialization.name--; } while (0)
-#define OPCODE_EXE_INC(opname) do { if (_py_stats) _py_stats->opcode_stats[opname].execution_count++; } while (0)
-#define CALL_STAT_INC(name) do { if (_py_stats) _py_stats->call_stats.name++; } while (0)
-#define OBJECT_STAT_INC(name) do { if (_py_stats) _py_stats->object_stats.name++; } while (0)
+#define STAT_INC(opname, name) do { if (_Py_stats) _Py_stats->opcode_stats[opname].specialization.name++; } while (0)
+#define STAT_DEC(opname, name) do { if (_Py_stats) _Py_stats->opcode_stats[opname].specialization.name--; } while (0)
+#define OPCODE_EXE_INC(opname) do { if (_Py_stats) _Py_stats->opcode_stats[opname].execution_count++; } while (0)
+#define CALL_STAT_INC(name) do { if (_Py_stats) _Py_stats->call_stats.name++; } while (0)
+#define OBJECT_STAT_INC(name) do { if (_Py_stats) _Py_stats->object_stats.name++; } while (0)
 #define OBJECT_STAT_INC_COND(name, cond) \
-    do { if (_py_stats && cond) _py_stats->object_stats.name++; } while (0)
-#define EVAL_CALL_STAT_INC(name) do { if (_py_stats) _py_stats->call_stats.eval_calls[name]++; } while (0)
+    do { if (_Py_stats && cond) _Py_stats->object_stats.name++; } while (0)
+#define EVAL_CALL_STAT_INC(name) do { if (_Py_stats) _Py_stats->call_stats.eval_calls[name]++; } while (0)
 #define EVAL_CALL_STAT_INC_IF_FUNCTION(name, callable) \
-    do { if (_py_stats && PyFunction_Check(callable)) _py_stats->call_stats.eval_calls[name]++; } while (0)
-
-// Used by the _opcode extension which is built as a shared library
+    do { if (_Py_stats && PyFunction_Check(callable)) _Py_stats->call_stats.eval_calls[name]++; } while (0)
+#define GC_STAT_ADD(gen, name, n) do { if (_Py_stats) _Py_stats->gc_stats[(gen)].name += (n); } while (0)
+#define OPT_STAT_INC(name) do { if (_Py_stats) _Py_stats->optimization_stats.name++; } while (0)
+#define UOP_STAT_INC(opname, name) do { if (_Py_stats) { assert(opname < 512); _Py_stats->optimization_stats.opcode[opname].name++; } } while (0)
+#define OPT_UNSUPPORTED_OPCODE(opname) do { if (_Py_stats) _Py_stats->optimization_stats.unsupported_opcode[opname]++; } while (0)
+#define OPT_HIST(length, name) \
+    do { \
+        if (_Py_stats) { \
+            int bucket = _Py_bit_length(length >= 1 ? length - 1 : 0); \
+            bucket = (bucket >= _Py_UOP_HIST_SIZE) ? _Py_UOP_HIST_SIZE - 1 : bucket; \
+            _Py_stats->optimization_stats.name[bucket]++; \
+        } \
+    } while (0)
+
+// Export for '_opcode' shared extension
 PyAPI_FUNC(PyObject*) _Py_GetSpecializationStats(void);
 
 #else
@@ -278,6 +308,11 @@ PyAPI_FUNC(PyObject*) _Py_GetSpecializationStats(void);
 #define OBJECT_STAT_INC_COND(name, cond) ((void)0)
 #define EVAL_CALL_STAT_INC(name) ((void)0)
 #define EVAL_CALL_STAT_INC_IF_FUNCTION(name, callable) ((void)0)
+#define GC_STAT_ADD(gen, name, n) ((void)0)
+#define OPT_STAT_INC(name) ((void)0)
+#define UOP_STAT_INC(opname, name) ((void)0)
+#define OPT_UNSUPPORTED_OPCODE(opname) ((void)0)
+#define OPT_HIST(length, name) ((void)0)
 #endif  // !Py_STATS
 
 // Utility functions for reading/writing 32/64-bit values in the inline caches.
@@ -359,27 +394,29 @@ write_varint(uint8_t *ptr, unsigned int val)
         val >>= 6;
         written++;
     }
-    *ptr = val;
+    *ptr = (uint8_t)val;
     return written;
 }
 
 static inline int
 write_signed_varint(uint8_t *ptr, int val)
 {
+    unsigned int uval;
     if (val < 0) {
-        val = ((-val)<<1) | 1;
+        // (unsigned int)(-val) has an undefined behavior for INT_MIN
+        uval = ((0 - (unsigned int)val) << 1) | 1;
     }
     else {
-        val = val << 1;
+        uval = (unsigned int)val << 1;
     }
-    return write_varint(ptr, val);
+    return write_varint(ptr, uval);
 }
 
 static inline int
 write_location_entry_start(uint8_t *ptr, int code, int length)
 {
     assert((code & 15) == code);
-    *ptr = 128 | (code << 3) | (length - 1);
+    *ptr = 128 | (uint8_t)(code << 3) | (uint8_t)(length - 1);
     return 1;
 }
 
@@ -419,9 +456,9 @@ write_location_entry_start(uint8_t *ptr, int code, int length)
 
 
 static inline uint16_t
-adaptive_counter_bits(int value, int backoff) {
-    return (value << ADAPTIVE_BACKOFF_BITS) |
-        (backoff & ((1<<ADAPTIVE_BACKOFF_BITS)-1));
+adaptive_counter_bits(uint16_t value, uint16_t backoff) {
+    return ((value << ADAPTIVE_BACKOFF_BITS)
+            | (backoff & ((1 << ADAPTIVE_BACKOFF_BITS) - 1)));
 }
 
 static inline uint16_t
@@ -438,31 +475,16 @@ adaptive_counter_cooldown(void) {
 
 static inline uint16_t
 adaptive_counter_backoff(uint16_t counter) {
-    unsigned int backoff = counter & ((1<<ADAPTIVE_BACKOFF_BITS)-1);
+    uint16_t backoff = counter & ((1 << ADAPTIVE_BACKOFF_BITS) - 1);
     backoff++;
     if (backoff > MAX_BACKOFF_VALUE) {
         backoff = MAX_BACKOFF_VALUE;
     }
-    unsigned int value = (1 << backoff) - 1;
+    uint16_t value = (uint16_t)(1 << backoff) - 1;
     return adaptive_counter_bits(value, backoff);
 }
 
 
-/* Line array cache for tracing */
-
-typedef struct _PyShimCodeDef {
-    const uint8_t *code;
-    int codelen;
-    int stacksize;
-    const char *cname;
-} _PyShimCodeDef;
-
-extern PyCodeObject *
-_Py_MakeShimCode(const _PyShimCodeDef *code);
-
-extern uint32_t _Py_next_func_version;
-
-
 /* Comparison bit masks. */
 
 /* Note this evaluates its arguments twice each */
@@ -487,6 +509,7 @@ extern int _Py_Instrument(PyCodeObject *co, PyInterpreterState *interp);
 
 extern int _Py_GetBaseOpcode(PyCodeObject *code, int offset);
 
+extern int _PyInstruction_GetLength(PyCodeObject *code, int offset);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_codecs.h b/Include/internal/pycore_codecs.h
new file mode 100644
index 00000000000000..a2a7151d50ade7
--- /dev/null
+++ b/Include/internal/pycore_codecs.h
@@ -0,0 +1,55 @@
+#ifndef Py_INTERNAL_CODECS_H
+#define Py_INTERNAL_CODECS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+extern PyObject* _PyCodec_Lookup(const char *encoding);
+
+/* Text codec specific encoding and decoding API.
+
+   Checks the encoding against a list of codecs which do not
+   implement a str<->bytes encoding before attempting the
+   operation.
+
+   Please note that these APIs are internal and should not
+   be used in Python C extensions.
+
+   XXX (ncoghlan): should we make these, or something like them, public
+   in Python 3.5+?
+
+ */
+extern PyObject* _PyCodec_LookupTextEncoding(
+   const char *encoding,
+   const char *alternate_command);
+
+extern PyObject* _PyCodec_EncodeText(
+   PyObject *object,
+   const char *encoding,
+   const char *errors);
+
+extern PyObject* _PyCodec_DecodeText(
+   PyObject *object,
+   const char *encoding,
+   const char *errors);
+
+/* These two aren't actually text encoding specific, but _io.TextIOWrapper
+ * is the only current API consumer.
+ */
+extern PyObject* _PyCodecInfo_GetIncrementalDecoder(
+   PyObject *codec_info,
+   const char *errors);
+
+extern PyObject* _PyCodecInfo_GetIncrementalEncoder(
+   PyObject *codec_info,
+   const char *errors);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_CODECS_H */
diff --git a/Include/internal/pycore_compile.h b/Include/internal/pycore_compile.h
index 499f55f3e276be..e5870759ba74f1 100644
--- a/Include/internal/pycore_compile.h
+++ b/Include/internal/pycore_compile.h
@@ -11,7 +11,7 @@ extern "C" {
 struct _arena;   // Type defined in pycore_pyarena.h
 struct _mod;     // Type defined in pycore_ast.h
 
-// Export the symbol for test_peg_generator (built as a library)
+// Export for 'test_peg_generator' shared extension
 PyAPI_FUNC(PyCodeObject*) _PyAST_Compile(
     struct _mod *mod,
     PyObject *filename,
@@ -19,23 +19,24 @@ PyAPI_FUNC(PyCodeObject*) _PyAST_Compile(
     int optimize,
     struct _arena *arena);
 
-static const _PyCompilerSrcLocation NO_LOCATION = {-1, -1, -1, -1};
-
-typedef struct {
-    int optimize;
-    int ff_features;
+/* AST optimizations */
+extern int _PyCompile_AstOptimize(
+    struct _mod *mod,
+    PyObject *filename,
+    PyCompilerFlags *flags,
+    int optimize,
+    struct _arena *arena);
 
-    int recursion_depth;            /* current recursion depth */
-    int recursion_limit;            /* recursion limit */
-} _PyASTOptimizeState;
+static const _PyCompilerSrcLocation NO_LOCATION = {-1, -1, -1, -1};
 
 extern int _PyAST_Optimize(
     struct _mod *,
     struct _arena *arena,
-    _PyASTOptimizeState *state);
+    int optimize,
+    int ff_features);
 
 typedef struct {
-    int h_offset;
+    int h_label;
     int h_startdepth;
     int h_preserve_lasti;
 } _PyCompile_ExceptHandlerInfo;
@@ -45,6 +46,10 @@ typedef struct {
     int i_oparg;
     _PyCompilerSrcLocation i_loc;
     _PyCompile_ExceptHandlerInfo i_except_handler_info;
+
+    /* Used by the assembler */
+    int i_target;
+    int i_offset;
 } _PyCompile_Instruction;
 
 typedef struct {
@@ -57,6 +62,11 @@ typedef struct {
     int s_next_free_label; /* next free label id */
 } _PyCompile_InstructionSequence;
 
+int _PyCompile_InstructionSequence_UseLabel(_PyCompile_InstructionSequence *seq, int lbl);
+int _PyCompile_InstructionSequence_Addop(_PyCompile_InstructionSequence *seq,
+                                         int opcode, int oparg,
+                                         _PyCompilerSrcLocation loc);
+
 typedef struct {
     PyObject *u_name;
     PyObject *u_qualname;  /* dot-separated qualified name (lazy) */
@@ -92,10 +102,26 @@ int _PyCompile_EnsureArrayLargeEnough(
 
 int _PyCompile_ConstCacheMergeOne(PyObject *const_cache, PyObject **obj);
 
-int _PyCompile_InstrSize(int opcode, int oparg);
+
+// Export for '_opcode' extention module
+PyAPI_FUNC(int) _PyCompile_OpcodeIsValid(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasArg(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasConst(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasName(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasJump(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasFree(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasLocal(int opcode);
+PyAPI_FUNC(int) _PyCompile_OpcodeHasExc(int opcode);
+
+PyAPI_FUNC(PyObject*) _PyCompile_GetUnaryIntrinsicName(int index);
+PyAPI_FUNC(PyObject*) _PyCompile_GetBinaryIntrinsicName(int index);
 
 /* Access compiler internals for unit testing */
 
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(PyObject*) _PyCompile_CleanDoc(PyObject *doc);
+
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(PyObject*) _PyCompile_CodeGen(
         PyObject *ast,
         PyObject *filename,
@@ -103,10 +129,13 @@ PyAPI_FUNC(PyObject*) _PyCompile_CodeGen(
         int optimize,
         int compile_mode);
 
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(PyObject*) _PyCompile_OptimizeCfg(
         PyObject *instructions,
-        PyObject *consts);
+        PyObject *consts,
+        int nlocals);
 
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(PyCodeObject*)
 _PyCompile_Assemble(_PyCompile_CodeUnitMetadata *umd, PyObject *filename,
                     PyObject *instructions);
diff --git a/Include/internal/pycore_complexobject.h b/Include/internal/pycore_complexobject.h
new file mode 100644
index 00000000000000..54713536eedc46
--- /dev/null
+++ b/Include/internal/pycore_complexobject.h
@@ -0,0 +1,25 @@
+#ifndef Py_INTERNAL_COMPLEXOBJECT_H
+#define Py_INTERNAL_COMPLEXOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_unicodeobject.h" // _PyUnicodeWriter
+
+/* Format the object based on the format_spec, as defined in PEP 3101
+   (Advanced String Formatting). */
+extern int _PyComplex_FormatAdvancedWriter(
+    _PyUnicodeWriter *writer,
+    PyObject *obj,
+    PyObject *format_spec,
+    Py_ssize_t start,
+    Py_ssize_t end);
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_COMPLEXOBJECT_H
diff --git a/Include/internal/pycore_condvar.h b/Include/internal/pycore_condvar.h
index 981c962bf7dfdf..34c21aaad43197 100644
--- a/Include/internal/pycore_condvar.h
+++ b/Include/internal/pycore_condvar.h
@@ -5,14 +5,8 @@
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#ifndef _POSIX_THREADS
-/* This means pthreads are not implemented in libc headers, hence the macro
-   not present in unistd.h. But they still can be implemented as an external
-   library (e.g. gnu pth in pthread emulation) */
-# ifdef HAVE_PTHREAD_H
-#  include <pthread.h> /* _POSIX_THREADS */
-# endif
-#endif
+#include "pycore_pythread.h"      // _POSIX_THREADS
+
 
 #ifdef _POSIX_THREADS
 /*
@@ -21,7 +15,7 @@
 #define Py_HAVE_CONDVAR
 
 #ifdef HAVE_PTHREAD_H
-#  include <pthread.h>
+#  include <pthread.h>            // pthread_mutex_t
 #endif
 
 #define PyMUTEX_T pthread_mutex_t
@@ -38,7 +32,7 @@
 
 /* include windows if it hasn't been done before */
 #define WIN32_LEAN_AND_MEAN
-#include <windows.h>
+#include <windows.h>              // CRITICAL_SECTION
 
 /* options */
 /* non-emulated condition variables are provided for those that want
diff --git a/Include/internal/pycore_context.h b/Include/internal/pycore_context.h
index 52dfe3ef233874..ec884e9e0f55a9 100644
--- a/Include/internal/pycore_context.h
+++ b/Include/internal/pycore_context.h
@@ -5,7 +5,7 @@
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_hamt.h"   /* PyHamtObject */
+#include "pycore_hamt.h"          // PyHamtObject
 
 
 extern PyTypeObject _PyContextTokenMissing_Type;
@@ -68,4 +68,9 @@ struct _pycontexttokenobject {
 };
 
 
+// _testinternalcapi.hamt() used by tests.
+// Export for '_testcapi' shared extension
+PyAPI_FUNC(PyObject*) _PyContext_NewHamtForTests(void);
+
+
 #endif /* !Py_INTERNAL_CONTEXT_H */
diff --git a/Include/internal/pycore_critical_section.h b/Include/internal/pycore_critical_section.h
new file mode 100644
index 00000000000000..bf2bbfffc38bd0
--- /dev/null
+++ b/Include/internal/pycore_critical_section.h
@@ -0,0 +1,242 @@
+#ifndef Py_INTERNAL_CRITICAL_SECTION_H
+#define Py_INTERNAL_CRITICAL_SECTION_H
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_lock.h"        // PyMutex
+#include "pycore_pystate.h"     // _PyThreadState_GET()
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Implementation of Python critical sections
+//
+// Conceptually, critical sections are a deadlock avoidance layer on top of
+// per-object locks. These helpers, in combination with those locks, replace
+// our usage of the global interpreter lock to provide thread-safety for
+// otherwise thread-unsafe objects, such as dict.
+//
+// NOTE: These APIs are no-ops in non-free-threaded builds.
+//
+// Straightforward per-object locking could introduce deadlocks that were not
+// present when running with the GIL. Threads may hold locks for multiple
+// objects simultaneously because Python operations can nest. If threads were
+// to acquire the same locks in different orders, they would deadlock.
+//
+// One way to avoid deadlocks is to allow threads to hold only the lock (or
+// locks) for a single operation at a time (typically a single lock, but some
+// operations involve two locks). When a thread begins a nested operation it
+// could suspend the locks for any outer operation: before beginning the nested
+// operation, the locks for the outer operation are released and when the
+// nested operation completes, the locks for the outer operation are
+// reacquired.
+//
+// To improve performance, this API uses a variation of the above scheme.
+// Instead of immediately suspending locks any time a nested operation begins,
+// locks are only suspended if the thread would block. This reduces the number
+// of lock acquisitions and releases for nested operations, while still
+// avoiding deadlocks.
+//
+// Additionally, the locks for any active operation are suspended around
+// other potentially blocking operations, such as I/O. This is because the
+// interaction between locks and blocking operations can lead to deadlocks in
+// the same way as the interaction between multiple locks.
+//
+// Each thread's critical sections and their corresponding locks are tracked in
+// a stack in `PyThreadState.critical_section`. When a thread calls
+// `_PyThreadState_Detach()`, such as before a blocking I/O operation or when
+// waiting to acquire a lock, the thread suspends all of its active critical
+// sections, temporarily releasing the associated locks. When the thread calls
+// `_PyThreadState_Attach()`, it resumes the top-most (i.e., most recent)
+// critical section by reacquiring the associated lock or locks.  See
+// `_PyCriticalSection_Resume()`.
+//
+// NOTE: Only the top-most critical section is guaranteed to be active.
+// Operations that need to lock two objects at once must use
+// `Py_BEGIN_CRITICAL_SECTION2()`. You *CANNOT* use nested critical sections
+// to lock more than one object at once, because the inner critical section
+// may  suspend the outer critical sections. This API does not provide a way
+// to lock more than two objects at once (though it could be added later
+// if actually needed).
+//
+// NOTE: Critical sections implicitly behave like reentrant locks because
+// attempting to acquire the same lock will suspend any outer (earlier)
+// critical sections. However, they are less efficient for this use case than
+// purposefully designed reentrant locks.
+//
+// Example usage:
+//  Py_BEGIN_CRITICAL_SECTION(op);
+//  ...
+//  Py_END_CRITICAL_SECTION();
+//
+// To lock two objects at once:
+//  Py_BEGIN_CRITICAL_SECTION2(op1, op2);
+//  ...
+//  Py_END_CRITICAL_SECTION2();
+
+
+// Tagged pointers to critical sections use the two least significant bits to
+// mark if the pointed-to critical section is inactive and whether it is a
+// _PyCriticalSection2 object.
+#define _Py_CRITICAL_SECTION_INACTIVE       0x1
+#define _Py_CRITICAL_SECTION_TWO_MUTEXES    0x2
+#define _Py_CRITICAL_SECTION_MASK           0x3
+
+#ifdef Py_GIL_DISABLED
+# define Py_BEGIN_CRITICAL_SECTION(op)                                  \
+    {                                                                   \
+        _PyCriticalSection _cs;                                         \
+        _PyCriticalSection_Begin(&_cs, &_PyObject_CAST(op)->ob_mutex)
+
+# define Py_END_CRITICAL_SECTION()                                      \
+        _PyCriticalSection_End(&_cs);                                   \
+    }
+
+# define Py_BEGIN_CRITICAL_SECTION2(a, b)                               \
+    {                                                                   \
+        _PyCriticalSection2 _cs2;                                       \
+        _PyCriticalSection2_Begin(&_cs2, &_PyObject_CAST(a)->ob_mutex, &_PyObject_CAST(b)->ob_mutex)
+
+# define Py_END_CRITICAL_SECTION2()                                     \
+        _PyCriticalSection2_End(&_cs2);                                 \
+    }
+#else  /* !Py_GIL_DISABLED */
+// The critical section APIs are no-ops with the GIL.
+# define Py_BEGIN_CRITICAL_SECTION(op)
+# define Py_END_CRITICAL_SECTION()
+# define Py_BEGIN_CRITICAL_SECTION2(a, b)
+# define Py_END_CRITICAL_SECTION2()
+#endif  /* !Py_GIL_DISABLED */
+
+typedef struct {
+    // Tagged pointer to an outer active critical section (or 0).
+    // The two least-significant-bits indicate whether the pointed-to critical
+    // section is inactive and whether it is a _PyCriticalSection2 object.
+    uintptr_t prev;
+
+    // Mutex used to protect critical section
+    PyMutex *mutex;
+} _PyCriticalSection;
+
+// A critical section protected by two mutexes. Use
+// _PyCriticalSection2_Begin and _PyCriticalSection2_End.
+typedef struct {
+    _PyCriticalSection base;
+
+    PyMutex *mutex2;
+} _PyCriticalSection2;
+
+static inline int
+_PyCriticalSection_IsActive(uintptr_t tag)
+{
+    return tag != 0 && (tag & _Py_CRITICAL_SECTION_INACTIVE) == 0;
+}
+
+// Resumes the top-most critical section.
+PyAPI_FUNC(void)
+_PyCriticalSection_Resume(PyThreadState *tstate);
+
+// (private) slow path for locking the mutex
+PyAPI_FUNC(void)
+_PyCriticalSection_BeginSlow(_PyCriticalSection *c, PyMutex *m);
+
+PyAPI_FUNC(void)
+_PyCriticalSection2_BeginSlow(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2,
+                             int is_m1_locked);
+
+static inline void
+_PyCriticalSection_Begin(_PyCriticalSection *c, PyMutex *m)
+{
+    if (PyMutex_LockFast(&m->v)) {
+        PyThreadState *tstate = _PyThreadState_GET();
+        c->mutex = m;
+        c->prev = tstate->critical_section;
+        tstate->critical_section = (uintptr_t)c;
+    }
+    else {
+        _PyCriticalSection_BeginSlow(c, m);
+    }
+}
+
+// Removes the top-most critical section from the thread's stack of critical
+// sections. If the new top-most critical section is inactive, then it is
+// resumed.
+static inline void
+_PyCriticalSection_Pop(_PyCriticalSection *c)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+    uintptr_t prev = c->prev;
+    tstate->critical_section = prev;
+
+    if ((prev & _Py_CRITICAL_SECTION_INACTIVE) != 0) {
+        _PyCriticalSection_Resume(tstate);
+    }
+}
+
+static inline void
+_PyCriticalSection_End(_PyCriticalSection *c)
+{
+    PyMutex_Unlock(c->mutex);
+    _PyCriticalSection_Pop(c);
+}
+
+static inline void
+_PyCriticalSection2_Begin(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2)
+{
+    if (m1 == m2) {
+        // If the two mutex arguments are the same, treat this as a critical
+        // section with a single mutex.
+        c->mutex2 = NULL;
+        _PyCriticalSection_Begin(&c->base, m1);
+        return;
+    }
+
+    if ((uintptr_t)m2 < (uintptr_t)m1) {
+        // Sort the mutexes so that the lower address is locked first.
+        // The exact order does not matter, but we need to acquire the mutexes
+        // in a consistent order to avoid lock ordering deadlocks.
+        PyMutex *tmp = m1;
+        m1 = m2;
+        m2 = tmp;
+    }
+
+    if (PyMutex_LockFast(&m1->v)) {
+        if (PyMutex_LockFast(&m2->v)) {
+            PyThreadState *tstate = _PyThreadState_GET();
+            c->base.mutex = m1;
+            c->mutex2 = m2;
+            c->base.prev = tstate->critical_section;
+
+            uintptr_t p = (uintptr_t)c | _Py_CRITICAL_SECTION_TWO_MUTEXES;
+            tstate->critical_section = p;
+        }
+        else {
+            _PyCriticalSection2_BeginSlow(c, m1, m2, 1);
+        }
+    }
+    else {
+        _PyCriticalSection2_BeginSlow(c, m1, m2, 0);
+    }
+}
+
+static inline void
+_PyCriticalSection2_End(_PyCriticalSection2 *c)
+{
+    if (c->mutex2) {
+        PyMutex_Unlock(c->mutex2);
+    }
+    PyMutex_Unlock(c->base.mutex);
+    _PyCriticalSection_Pop(&c->base);
+}
+
+PyAPI_FUNC(void)
+_PyCriticalSection_SuspendAll(PyThreadState *tstate);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_CRITICAL_SECTION_H */
diff --git a/Include/internal/pycore_crossinterp.h b/Include/internal/pycore_crossinterp.h
new file mode 100644
index 00000000000000..2e6d09a49f95d3
--- /dev/null
+++ b/Include/internal/pycore_crossinterp.h
@@ -0,0 +1,282 @@
+#ifndef Py_INTERNAL_CROSSINTERP_H
+#define Py_INTERNAL_CROSSINTERP_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_lock.h"            // PyMutex
+#include "pycore_pyerrors.h"
+
+
+/***************************/
+/* cross-interpreter calls */
+/***************************/
+
+typedef int (*_Py_simple_func)(void *);
+extern int _Py_CallInInterpreter(
+    PyInterpreterState *interp,
+    _Py_simple_func func,
+    void *arg);
+extern int _Py_CallInInterpreterAndRawFree(
+    PyInterpreterState *interp,
+    _Py_simple_func func,
+    void *arg);
+
+
+/**************************/
+/* cross-interpreter data */
+/**************************/
+
+typedef struct _xid _PyCrossInterpreterData;
+typedef PyObject *(*xid_newobjectfunc)(_PyCrossInterpreterData *);
+typedef void (*xid_freefunc)(void *);
+
+// _PyCrossInterpreterData is similar to Py_buffer as an effectively
+// opaque struct that holds data outside the object machinery.  This
+// is necessary to pass safely between interpreters in the same process.
+struct _xid {
+    // data is the cross-interpreter-safe derivation of a Python object
+    // (see _PyObject_GetCrossInterpreterData).  It will be NULL if the
+    // new_object func (below) encodes the data.
+    void *data;
+    // obj is the Python object from which the data was derived.  This
+    // is non-NULL only if the data remains bound to the object in some
+    // way, such that the object must be "released" (via a decref) when
+    // the data is released.  In that case the code that sets the field,
+    // likely a registered "crossinterpdatafunc", is responsible for
+    // ensuring it owns the reference (i.e. incref).
+    PyObject *obj;
+    // interp is the ID of the owning interpreter of the original
+    // object.  It corresponds to the active interpreter when
+    // _PyObject_GetCrossInterpreterData() was called.  This should only
+    // be set by the cross-interpreter machinery.
+    //
+    // We use the ID rather than the PyInterpreterState to avoid issues
+    // with deleted interpreters.  Note that IDs are never re-used, so
+    // each one will always correspond to a specific interpreter
+    // (whether still alive or not).
+    int64_t interpid;
+    // new_object is a function that returns a new object in the current
+    // interpreter given the data.  The resulting object (a new
+    // reference) will be equivalent to the original object.  This field
+    // is required.
+    xid_newobjectfunc new_object;
+    // free is called when the data is released.  If it is NULL then
+    // nothing will be done to free the data.  For some types this is
+    // okay (e.g. bytes) and for those types this field should be set
+    // to NULL.  However, for most the data was allocated just for
+    // cross-interpreter use, so it must be freed when
+    // _PyCrossInterpreterData_Release is called or the memory will
+    // leak.  In that case, at the very least this field should be set
+    // to PyMem_RawFree (the default if not explicitly set to NULL).
+    // The call will happen with the original interpreter activated.
+    xid_freefunc free;
+};
+
+PyAPI_FUNC(_PyCrossInterpreterData *) _PyCrossInterpreterData_New(void);
+PyAPI_FUNC(void) _PyCrossInterpreterData_Free(_PyCrossInterpreterData *data);
+
+
+/* defining cross-interpreter data */
+
+PyAPI_FUNC(void) _PyCrossInterpreterData_Init(
+        _PyCrossInterpreterData *data,
+        PyInterpreterState *interp, void *shared, PyObject *obj,
+        xid_newobjectfunc new_object);
+PyAPI_FUNC(int) _PyCrossInterpreterData_InitWithSize(
+        _PyCrossInterpreterData *,
+        PyInterpreterState *interp, const size_t, PyObject *,
+        xid_newobjectfunc);
+PyAPI_FUNC(void) _PyCrossInterpreterData_Clear(
+        PyInterpreterState *, _PyCrossInterpreterData *);
+
+
+/* using cross-interpreter data */
+
+PyAPI_FUNC(int) _PyObject_CheckCrossInterpreterData(PyObject *);
+PyAPI_FUNC(int) _PyObject_GetCrossInterpreterData(PyObject *, _PyCrossInterpreterData *);
+PyAPI_FUNC(PyObject *) _PyCrossInterpreterData_NewObject(_PyCrossInterpreterData *);
+PyAPI_FUNC(int) _PyCrossInterpreterData_Release(_PyCrossInterpreterData *);
+PyAPI_FUNC(int) _PyCrossInterpreterData_ReleaseAndRawFree(_PyCrossInterpreterData *);
+
+
+/* cross-interpreter data registry */
+
+// For now we use a global registry of shareable classes.  An
+// alternative would be to add a tp_* slot for a class's
+// crossinterpdatafunc. It would be simpler and more efficient.
+
+typedef int (*crossinterpdatafunc)(PyThreadState *tstate, PyObject *,
+                                   _PyCrossInterpreterData *);
+
+struct _xidregitem;
+
+struct _xidregitem {
+    struct _xidregitem *prev;
+    struct _xidregitem *next;
+    /* This can be a dangling pointer, but only if weakref is set. */
+    PyTypeObject *cls;
+    /* This is NULL for builtin types. */
+    PyObject *weakref;
+    size_t refcount;
+    crossinterpdatafunc getdata;
+};
+
+struct _xidregistry {
+    int global;  /* builtin types or heap types */
+    int initialized;
+    PyMutex mutex;
+    struct _xidregitem *head;
+};
+
+PyAPI_FUNC(int) _PyCrossInterpreterData_RegisterClass(PyTypeObject *, crossinterpdatafunc);
+PyAPI_FUNC(int) _PyCrossInterpreterData_UnregisterClass(PyTypeObject *);
+PyAPI_FUNC(crossinterpdatafunc) _PyCrossInterpreterData_Lookup(PyObject *);
+
+
+/*****************************/
+/* runtime state & lifecycle */
+/*****************************/
+
+struct _xi_runtime_state {
+    // builtin types
+    // XXX Remove this field once we have a tp_* slot.
+    struct _xidregistry registry;
+};
+
+struct _xi_state {
+    // heap types
+    // XXX Remove this field once we have a tp_* slot.
+    struct _xidregistry registry;
+
+    // heap types
+    PyObject *PyExc_NotShareableError;
+};
+
+extern PyStatus _PyXI_Init(PyInterpreterState *interp);
+extern void _PyXI_Fini(PyInterpreterState *interp);
+
+
+/***************************/
+/* short-term data sharing */
+/***************************/
+
+// Ultimately we'd like to preserve enough information about the
+// exception and traceback that we could re-constitute (or at least
+// simulate, a la traceback.TracebackException), and even chain, a copy
+// of the exception in the calling interpreter.
+
+typedef struct _excinfo {
+    struct _excinfo_type {
+        PyTypeObject *builtin;
+        const char *name;
+        const char *qualname;
+        const char *module;
+    } type;
+    const char *msg;
+} _PyXI_excinfo;
+
+
+typedef enum error_code {
+    _PyXI_ERR_NO_ERROR = 0,
+    _PyXI_ERR_UNCAUGHT_EXCEPTION = -1,
+    _PyXI_ERR_OTHER = -2,
+    _PyXI_ERR_NO_MEMORY = -3,
+    _PyXI_ERR_ALREADY_RUNNING = -4,
+    _PyXI_ERR_MAIN_NS_FAILURE = -5,
+    _PyXI_ERR_APPLY_NS_FAILURE = -6,
+    _PyXI_ERR_NOT_SHAREABLE = -7,
+} _PyXI_errcode;
+
+
+typedef struct _sharedexception {
+    // The originating interpreter.
+    PyInterpreterState *interp;
+    // The kind of error to propagate.
+    _PyXI_errcode code;
+    // The exception information to propagate, if applicable.
+    // This is populated only for some error codes,
+    // but always for _PyXI_ERR_UNCAUGHT_EXCEPTION.
+    _PyXI_excinfo uncaught;
+} _PyXI_error;
+
+PyAPI_FUNC(PyObject *) _PyXI_ApplyError(_PyXI_error *err);
+
+
+typedef struct xi_session _PyXI_session;
+typedef struct _sharedns _PyXI_namespace;
+
+PyAPI_FUNC(void) _PyXI_FreeNamespace(_PyXI_namespace *ns);
+PyAPI_FUNC(_PyXI_namespace *) _PyXI_NamespaceFromNames(PyObject *names);
+PyAPI_FUNC(int) _PyXI_FillNamespaceFromDict(
+    _PyXI_namespace *ns,
+    PyObject *nsobj,
+    _PyXI_session *session);
+PyAPI_FUNC(int) _PyXI_ApplyNamespace(
+    _PyXI_namespace *ns,
+    PyObject *nsobj,
+    PyObject *dflt);
+
+
+// A cross-interpreter session involves entering an interpreter
+// (_PyXI_Enter()), doing some work with it, and finally exiting
+// that interpreter (_PyXI_Exit()).
+//
+// At the boundaries of the session, both entering and exiting,
+// data may be exchanged between the previous interpreter and the
+// target one in a thread-safe way that does not violate the
+// isolation between interpreters.  This includes setting objects
+// in the target's __main__ module on the way in, and capturing
+// uncaught exceptions on the way out.
+struct xi_session {
+    // Once a session has been entered, this is the tstate that was
+    // current before the session.  If it is different from cur_tstate
+    // then we must have switched interpreters.  Either way, this will
+    // be the current tstate once we exit the session.
+    PyThreadState *prev_tstate;
+    // Once a session has been entered, this is the current tstate.
+    // It must be current when the session exits.
+    PyThreadState *init_tstate;
+    // This is true if init_tstate needs cleanup during exit.
+    int own_init_tstate;
+
+    // This is true if, while entering the session, init_thread took
+    // "ownership" of the interpreter's __main__ module.  This means
+    // it is the only thread that is allowed to run code there.
+    // (Caveat: for now, users may still run exec() against the
+    // __main__ module's dict, though that isn't advisable.)
+    int running;
+    // This is a cached reference to the __dict__ of the entered
+    // interpreter's __main__ module.  It is looked up when at the
+    // beginning of the session as a convenience.
+    PyObject *main_ns;
+
+    // This is set if the interpreter is entered and raised an exception
+    // that needs to be handled in some special way during exit.
+    _PyXI_errcode *error_override;
+    // This is set if exit captured an exception to propagate.
+    _PyXI_error *error;
+
+    // -- pre-allocated memory --
+    _PyXI_error _error;
+    _PyXI_errcode _error_override;
+};
+
+PyAPI_FUNC(int) _PyXI_Enter(
+    _PyXI_session *session,
+    PyInterpreterState *interp,
+    PyObject *nsupdates);
+PyAPI_FUNC(void) _PyXI_Exit(_PyXI_session *session);
+
+PyAPI_FUNC(PyObject *) _PyXI_ApplyCapturedException(_PyXI_session *session);
+PyAPI_FUNC(int) _PyXI_HasCapturedException(_PyXI_session *session);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_CROSSINTERP_H */
diff --git a/Include/internal/pycore_descrobject.h b/Include/internal/pycore_descrobject.h
index 76378569df90e3..3cec59a68a3d2b 100644
--- a/Include/internal/pycore_descrobject.h
+++ b/Include/internal/pycore_descrobject.h
@@ -20,6 +20,8 @@ typedef struct {
 
 typedef propertyobject _PyPropertyObject;
 
+extern PyTypeObject _PyMethodWrapper_Type;
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_dict.h b/Include/internal/pycore_dict.h
index 6253e0841ad349..d96870e9197bbf 100644
--- a/Include/internal/pycore_dict.h
+++ b/Include/internal/pycore_dict.h
@@ -9,8 +9,62 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_dict_state.h"
-#include "pycore_runtime.h"         // _PyRuntime
+#include "pycore_identifier.h"    // _Py_Identifier
+#include "pycore_object.h"        // PyDictOrValues
+
+// Unsafe flavor of PyDict_GetItemWithError(): no error checking
+extern PyObject* _PyDict_GetItemWithError(PyObject *dp, PyObject *key);
+
+extern int _PyDict_DelItemIf(PyObject *mp, PyObject *key,
+                             int (*predicate)(PyObject *value));
+
+// "KnownHash" variants
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyDict_SetItem_KnownHash(PyObject *mp, PyObject *key,
+                                          PyObject *item, Py_hash_t hash);
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyDict_DelItem_KnownHash(PyObject *mp, PyObject *key,
+                                          Py_hash_t hash);
+extern int _PyDict_Contains_KnownHash(PyObject *, PyObject *, Py_hash_t);
+
+// "Id" variants
+extern PyObject* _PyDict_GetItemIdWithError(PyObject *dp,
+                                            _Py_Identifier *key);
+extern int _PyDict_ContainsId(PyObject *, _Py_Identifier *);
+extern int _PyDict_SetItemId(PyObject *dp, _Py_Identifier *key, PyObject *item);
+extern int _PyDict_DelItemId(PyObject *mp, _Py_Identifier *key);
+
+extern int _PyDict_Next(
+    PyObject *mp, Py_ssize_t *pos, PyObject **key, PyObject **value, Py_hash_t *hash);
+
+extern int _PyDict_HasOnlyStringKeys(PyObject *mp);
+
+extern void _PyDict_MaybeUntrack(PyObject *mp);
+
+// Export for '_ctypes' shared extension
+PyAPI_FUNC(Py_ssize_t) _PyDict_SizeOf(PyDictObject *);
+
+#define _PyDict_HasSplitTable(d) ((d)->ma_values != NULL)
+
+/* Like PyDict_Merge, but override can be 0, 1 or 2.  If override is 0,
+   the first occurrence of a key wins, if override is 1, the last occurrence
+   of a key wins, if override is 2, a KeyError with conflicting key as
+   argument is raised.
+*/
+extern int _PyDict_MergeEx(PyObject *mp, PyObject *other, int override);
+
+extern void _PyDict_DebugMallocStats(FILE *out);
+
+
+/* _PyDictView */
+
+typedef struct {
+    PyObject_HEAD
+    PyDictObject *dv_dict;
+} _PyDictViewObject;
+
+extern PyObject* _PyDictView_New(PyObject *, PyTypeObject *);
+extern PyObject* _PyDictView_Intersect(PyObject* self, PyObject *other);
 
 
 /* runtime lifecycle */
@@ -42,6 +96,8 @@ extern uint32_t _PyDictKeys_GetVersionForCurrentState(
 
 extern size_t _PyDict_KeysSize(PyDictKeysObject *keys);
 
+extern void _PyDictKeys_DecRef(PyDictKeysObject *keys);
+
 /* _Py_dict_lookup() returns index of entry which can be used like DK_ENTRIES(dk)[index].
  * -1 when no entry found, -3 when compare raises error.
  */
@@ -55,7 +111,11 @@ extern PyObject *_PyDict_LoadGlobal(PyDictObject *, PyDictObject *, PyObject *);
 extern int _PyDict_SetItem_Take2(PyDictObject *op, PyObject *key, PyObject *value);
 extern int _PyObjectDict_SetItem(PyTypeObject *tp, PyObject **dictptr, PyObject *name, PyObject *value);
 
-extern PyObject *_PyDict_Pop_KnownHash(PyObject *, PyObject *, Py_hash_t, PyObject *);
+extern int _PyDict_Pop_KnownHash(
+    PyDictObject *dict,
+    PyObject *key,
+    Py_hash_t hash,
+    PyObject **result);
 
 #define DKIX_EMPTY (-1)
 #define DKIX_DUMMY (-2)  /* Used internally */
@@ -176,6 +236,7 @@ _PyDict_NotifyEvent(PyInterpreterState *interp,
 }
 
 extern PyObject *_PyObject_MakeDictFromInstanceAttributes(PyObject *obj, PyDictValues *values);
+extern bool _PyObject_MakeInstanceAttributesFromDict(PyObject *obj, PyDictOrValues *dorv);
 extern PyObject *_PyDict_FromItems(
         PyObject *const *keys, Py_ssize_t keys_offset,
         PyObject *const *values, Py_ssize_t values_offset,
diff --git a/Include/internal/pycore_dtoa.h b/Include/internal/pycore_dtoa.h
index 4d9681d59a64f7..c5cfdf4ce8f823 100644
--- a/Include/internal/pycore_dtoa.h
+++ b/Include/internal/pycore_dtoa.h
@@ -35,6 +35,9 @@ struct _dtoa_state {
 /* The size of the Bigint freelist */
 #define Bigint_Kmax 7
 
+/* The size of the cached powers of 5 array */
+#define Bigint_Pow5size 8
+
 #ifndef PRIVATE_MEM
 #define PRIVATE_MEM 2304
 #endif
@@ -42,9 +45,10 @@ struct _dtoa_state {
     ((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
 
 struct _dtoa_state {
-    /* p5s is a linked list of powers of 5 of the form 5**(2**i), i >= 2 */
+    // p5s is an array of powers of 5 of the form:
+    // 5**(2**(i+2)) for 0 <= i < Bigint_Pow5size
+    struct Bigint *p5s[Bigint_Pow5size];
     // XXX This should be freed during runtime fini.
-    struct Bigint *p5s;
     struct Bigint *freelist[Bigint_Kmax+1];
     double preallocated[Bigint_PREALLOC_SIZE];
     double *preallocated_next;
@@ -57,16 +61,18 @@ struct _dtoa_state {
 #endif  // !Py_USING_MEMORY_DEBUGGER
 
 
-/* These functions are used by modules compiled as C extension like math:
-   they must be exported. */
-
-PyAPI_FUNC(double) _Py_dg_strtod(const char *str, char **ptr);
-PyAPI_FUNC(char *) _Py_dg_dtoa(double d, int mode, int ndigits,
-                        int *decpt, int *sign, char **rve);
-PyAPI_FUNC(void) _Py_dg_freedtoa(char *s);
+extern double _Py_dg_strtod(const char *str, char **ptr);
+extern char* _Py_dg_dtoa(double d, int mode, int ndigits,
+                         int *decpt, int *sign, char **rve);
+extern void _Py_dg_freedtoa(char *s);
 
 #endif // _PY_SHORT_FLOAT_REPR == 1
 
+
+extern PyStatus _PyDtoa_Init(PyInterpreterState *interp);
+extern void _PyDtoa_Fini(PyInterpreterState *interp);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_emscripten_signal.h b/Include/internal/pycore_emscripten_signal.h
index 8b3287d85da4b2..754193e21dec5a 100644
--- a/Include/internal/pycore_emscripten_signal.h
+++ b/Include/internal/pycore_emscripten_signal.h
@@ -3,6 +3,10 @@
 
 #if defined(__EMSCRIPTEN__)
 
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
 void
 _Py_CheckEmscriptenSignals(void);
 
@@ -14,6 +18,7 @@ _Py_CheckEmscriptenSignalsPeriodically(void);
 #define _Py_CHECK_EMSCRIPTEN_SIGNALS_PERIODICALLY() _Py_CheckEmscriptenSignalsPeriodically()
 
 extern int Py_EMSCRIPTEN_SIGNAL_HANDLING;
+extern int _Py_emscripten_signal_clock;
 
 #else
 
diff --git a/Include/internal/pycore_emscripten_trampoline.h b/Include/internal/pycore_emscripten_trampoline.h
new file mode 100644
index 00000000000000..e519c99ad86cce
--- /dev/null
+++ b/Include/internal/pycore_emscripten_trampoline.h
@@ -0,0 +1,81 @@
+#ifndef Py_EMSCRIPTEN_TRAMPOLINE_H
+#define Py_EMSCRIPTEN_TRAMPOLINE_H
+
+#include "pycore_runtime.h"  // _PyRuntimeState
+
+/**
+ * C function call trampolines to mitigate bad function pointer casts.
+ *
+ * Section 6.3.2.3, paragraph 8 reads:
+ *
+ *      A pointer to a function of one type may be converted to a pointer to a
+ *      function of another type and back again; the result shall compare equal to
+ *      the original pointer. If a converted pointer is used to call a function
+ *      whose type is not compatible with the pointed-to type, the behavior is
+ *      undefined.
+ *
+ * Typical native ABIs ignore additional arguments or fill in missing values
+ * with 0/NULL in function pointer cast. Compilers do not show warnings when a
+ * function pointer is explicitly casted to an incompatible type.
+ *
+ * Bad fpcasts are an issue in WebAssembly. WASM's indirect_call has strict
+ * function signature checks. Argument count, types, and return type must match.
+ *
+ * Third party code unintentionally rely on problematic fpcasts. The call
+ * trampoline mitigates common occurrences of bad fpcasts on Emscripten.
+ */
+
+#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
+
+void _Py_EmscriptenTrampoline_Init(_PyRuntimeState *runtime);
+
+PyObject*
+_PyEM_TrampolineCall_JavaScript(PyCFunctionWithKeywords func,
+                                PyObject* self,
+                                PyObject* args,
+                                PyObject* kw);
+
+PyObject*
+_PyEM_TrampolineCall_Reflection(PyCFunctionWithKeywords func,
+                                PyObject* self,
+                                PyObject* args,
+                                PyObject* kw);
+
+#define _PyEM_TrampolineCall(meth, self, args, kw) \
+    ((_PyRuntime.wasm_type_reflection_available) ? \
+        (_PyEM_TrampolineCall_Reflection((PyCFunctionWithKeywords)(meth), (self), (args), (kw))) : \
+        (_PyEM_TrampolineCall_JavaScript((PyCFunctionWithKeywords)(meth), (self), (args), (kw))))
+
+#define _PyCFunction_TrampolineCall(meth, self, args) \
+    _PyEM_TrampolineCall( \
+        (*(PyCFunctionWithKeywords)(void(*)(void))(meth)), (self), (args), NULL)
+
+#define _PyCFunctionWithKeywords_TrampolineCall(meth, self, args, kw) \
+    _PyEM_TrampolineCall((meth), (self), (args), (kw))
+
+#define descr_set_trampoline_call(set, obj, value, closure) \
+    ((int)_PyEM_TrampolineCall((PyCFunctionWithKeywords)(set), (obj), (value), (PyObject*)(closure)))
+
+#define descr_get_trampoline_call(get, obj, closure) \
+    _PyEM_TrampolineCall((PyCFunctionWithKeywords)(get), (obj), (PyObject*)(closure), NULL)
+
+
+#else // defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
+
+#define _Py_EmscriptenTrampoline_Init(runtime)
+
+#define _PyCFunction_TrampolineCall(meth, self, args) \
+    (meth)((self), (args))
+
+#define _PyCFunctionWithKeywords_TrampolineCall(meth, self, args, kw) \
+    (meth)((self), (args), (kw))
+
+#define descr_set_trampoline_call(set, obj, value, closure) \
+    (set)((obj), (value), (closure))
+
+#define descr_get_trampoline_call(get, obj, closure) \
+    (get)((obj), (closure))
+
+#endif // defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
+
+#endif // ndef Py_EMSCRIPTEN_SIGNAL_H
diff --git a/Include/internal/pycore_faulthandler.h b/Include/internal/pycore_faulthandler.h
index e6aec7745a6479..6dd7d8d7ca9792 100644
--- a/Include/internal/pycore_faulthandler.h
+++ b/Include/internal/pycore_faulthandler.h
@@ -9,7 +9,7 @@ extern "C" {
 #endif
 
 #ifdef HAVE_SIGACTION
-#  include <signal.h>
+#  include <signal.h>             // sigaction
 #endif
 
 
diff --git a/Include/internal/pycore_fileutils.h b/Include/internal/pycore_fileutils.h
index ef6642d00f1b54..5c55282fa39e6f 100644
--- a/Include/internal/pycore_fileutils.h
+++ b/Include/internal/pycore_fileutils.h
@@ -5,12 +5,20 @@ extern "C" {
 #endif
 
 #ifndef Py_BUILD_CORE
-#  error "Py_BUILD_CORE must be defined to include this header"
+#  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include <locale.h>   /* struct lconv */
+#include <locale.h>               // struct lconv
 
 
+/* A routine to check if a file descriptor can be select()-ed. */
+#ifdef _MSC_VER
+    /* On Windows, any socket fd can be select()-ed, no matter how high */
+    #define _PyIsSelectable_fd(FD) (1)
+#else
+    #define _PyIsSelectable_fd(FD) ((unsigned int)(FD) < (unsigned int)FD_SETSIZE)
+#endif
+
 struct _fileutils_state {
     int force_ascii;
 };
@@ -27,8 +35,10 @@ typedef enum {
     _Py_ERROR_OTHER
 } _Py_error_handler;
 
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(_Py_error_handler) _Py_GetErrorHandler(const char *errors);
 
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(int) _Py_DecodeLocaleEx(
     const char *arg,
     wchar_t **wstr,
@@ -37,6 +47,7 @@ PyAPI_FUNC(int) _Py_DecodeLocaleEx(
     int current_locale,
     _Py_error_handler errors);
 
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(int) _Py_EncodeLocaleEx(
     const wchar_t *text,
     char **str,
@@ -45,11 +56,11 @@ PyAPI_FUNC(int) _Py_EncodeLocaleEx(
     int current_locale,
     _Py_error_handler errors);
 
-PyAPI_FUNC(char*) _Py_EncodeLocaleRaw(
+extern char* _Py_EncodeLocaleRaw(
     const wchar_t *text,
     size_t *error_pos);
 
-PyAPI_FUNC(PyObject *) _Py_device_encoding(int);
+extern PyObject* _Py_device_encoding(int);
 
 #if defined(MS_WINDOWS) || defined(__APPLE__)
     /* On Windows, the count parameter of read() is an int (bpo-9015, bpo-9611).
@@ -90,47 +101,54 @@ struct _Py_stat_struct {
 #  define _Py_stat_struct stat
 #endif
 
+// Export for 'mmap' shared extension
 PyAPI_FUNC(int) _Py_fstat(
     int fd,
     struct _Py_stat_struct *status);
 
+// Export for 'mmap' shared extension
 PyAPI_FUNC(int) _Py_fstat_noraise(
     int fd,
     struct _Py_stat_struct *status);
 
+// Export for '_tkinter' shared extension
 PyAPI_FUNC(int) _Py_stat(
     PyObject *path,
     struct stat *status);
 
+// Export for 'select' shared extension (Solaris newDevPollObject())
 PyAPI_FUNC(int) _Py_open(
     const char *pathname,
     int flags);
 
+// Export for '_posixsubprocess' shared extension
 PyAPI_FUNC(int) _Py_open_noraise(
     const char *pathname,
     int flags);
 
-PyAPI_FUNC(FILE *) _Py_wfopen(
+extern FILE* _Py_wfopen(
     const wchar_t *path,
     const wchar_t *mode);
 
-PyAPI_FUNC(Py_ssize_t) _Py_read(
+extern Py_ssize_t _Py_read(
     int fd,
     void *buf,
     size_t count);
 
+// Export for 'select' shared extension (Solaris devpoll_flush())
 PyAPI_FUNC(Py_ssize_t) _Py_write(
     int fd,
     const void *buf,
     size_t count);
 
+// Export for '_posixsubprocess' shared extension
 PyAPI_FUNC(Py_ssize_t) _Py_write_noraise(
     int fd,
     const void *buf,
     size_t count);
 
 #ifdef HAVE_READLINK
-PyAPI_FUNC(int) _Py_wreadlink(
+extern int _Py_wreadlink(
     const wchar_t *path,
     wchar_t *buf,
     /* Number of characters of 'buf' buffer
@@ -139,7 +157,7 @@ PyAPI_FUNC(int) _Py_wreadlink(
 #endif
 
 #ifdef HAVE_REALPATH
-PyAPI_FUNC(wchar_t*) _Py_wrealpath(
+extern wchar_t* _Py_wrealpath(
     const wchar_t *path,
     wchar_t *resolved_path,
     /* Number of characters of 'resolved_path' buffer
@@ -147,34 +165,38 @@ PyAPI_FUNC(wchar_t*) _Py_wrealpath(
     size_t resolved_path_len);
 #endif
 
-PyAPI_FUNC(wchar_t*) _Py_wgetcwd(
+extern wchar_t* _Py_wgetcwd(
     wchar_t *buf,
     /* Number of characters of 'buf' buffer
        including the trailing NUL character */
     size_t buflen);
 
-PyAPI_FUNC(int) _Py_get_inheritable(int fd);
+extern int _Py_get_inheritable(int fd);
 
+// Export for '_socket' shared extension
 PyAPI_FUNC(int) _Py_set_inheritable(int fd, int inheritable,
                                     int *atomic_flag_works);
 
+// Export for '_posixsubprocess' shared extension
 PyAPI_FUNC(int) _Py_set_inheritable_async_safe(int fd, int inheritable,
                                                int *atomic_flag_works);
 
+// Export for '_socket' shared extension
 PyAPI_FUNC(int) _Py_dup(int fd);
 
-PyAPI_FUNC(int) _Py_get_blocking(int fd);
+extern int _Py_get_blocking(int fd);
 
-PyAPI_FUNC(int) _Py_set_blocking(int fd, int blocking);
+extern int _Py_set_blocking(int fd, int blocking);
 
 #ifdef MS_WINDOWS
-PyAPI_FUNC(void*) _Py_get_osfhandle_noraise(int fd);
+extern void* _Py_get_osfhandle_noraise(int fd);
 
+// Export for '_testconsole' shared extension
 PyAPI_FUNC(void*) _Py_get_osfhandle(int fd);
 
-PyAPI_FUNC(int) _Py_open_osfhandle_noraise(void *handle, int flags);
+extern int _Py_open_osfhandle_noraise(void *handle, int flags);
 
-PyAPI_FUNC(int) _Py_open_osfhandle(void *handle, int flags);
+extern int _Py_open_osfhandle(void *handle, int flags);
 #endif  /* MS_WINDOWS */
 
 // This is used after getting NULL back from Py_DecodeLocale().
@@ -183,9 +205,9 @@ PyAPI_FUNC(int) _Py_open_osfhandle(void *handle, int flags);
      ? _PyStatus_ERR("cannot decode " NAME) \
      : _PyStatus_NO_MEMORY()
 
-PyAPI_DATA(int) _Py_HasFileSystemDefaultEncodeErrors;
+extern int _Py_HasFileSystemDefaultEncodeErrors;
 
-PyAPI_FUNC(int) _Py_DecodeUTF8Ex(
+extern int _Py_DecodeUTF8Ex(
     const char *arg,
     Py_ssize_t arglen,
     wchar_t **wstr,
@@ -193,7 +215,7 @@ PyAPI_FUNC(int) _Py_DecodeUTF8Ex(
     const char **reason,
     _Py_error_handler errors);
 
-PyAPI_FUNC(int) _Py_EncodeUTF8Ex(
+extern int _Py_EncodeUTF8Ex(
     const wchar_t *text,
     char **str,
     size_t *error_pos,
@@ -201,7 +223,7 @@ PyAPI_FUNC(int) _Py_EncodeUTF8Ex(
     int raw_malloc,
     _Py_error_handler errors);
 
-PyAPI_FUNC(wchar_t*) _Py_DecodeUTF8_surrogateescape(
+extern wchar_t* _Py_DecodeUTF8_surrogateescape(
     const char *arg,
     Py_ssize_t arglen,
     size_t *wlen);
@@ -209,25 +231,26 @@ PyAPI_FUNC(wchar_t*) _Py_DecodeUTF8_surrogateescape(
 extern int
 _Py_wstat(const wchar_t *, struct stat *);
 
-PyAPI_FUNC(int) _Py_GetForceASCII(void);
+extern int _Py_GetForceASCII(void);
 
 /* Reset "force ASCII" mode (if it was initialized).
 
    This function should be called when Python changes the LC_CTYPE locale,
    so the "force ASCII" mode can be detected again on the new locale
    encoding. */
-PyAPI_FUNC(void) _Py_ResetForceASCII(void);
+extern void _Py_ResetForceASCII(void);
 
 
-PyAPI_FUNC(int) _Py_GetLocaleconvNumeric(
+extern int _Py_GetLocaleconvNumeric(
     struct lconv *lc,
     PyObject **decimal_point,
     PyObject **thousands_sep);
 
+// Export for '_posixsubprocess' (on macOS)
 PyAPI_FUNC(void) _Py_closerange(int first, int last);
 
-PyAPI_FUNC(wchar_t*) _Py_GetLocaleEncoding(void);
-PyAPI_FUNC(PyObject*) _Py_GetLocaleEncodingObject(void);
+extern wchar_t* _Py_GetLocaleEncoding(void);
+extern PyObject* _Py_GetLocaleEncodingObject(void);
 
 #ifdef HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION
 extern int _Py_LocaleUsesNonUnicodeWchar(void);
@@ -246,19 +269,23 @@ extern int _Py_abspath(const wchar_t *path, wchar_t **abspath_p);
 #ifdef MS_WINDOWS
 extern int _PyOS_getfullpathname(const wchar_t *path, wchar_t **abspath_p);
 #endif
-extern wchar_t * _Py_join_relfile(const wchar_t *dirname,
-                                  const wchar_t *relfile);
+extern wchar_t* _Py_join_relfile(const wchar_t *dirname,
+                                 const wchar_t *relfile);
 extern int _Py_add_relfile(wchar_t *dirname,
                            const wchar_t *relfile,
                            size_t bufsize);
 extern size_t _Py_find_basename(const wchar_t *filename);
-PyAPI_FUNC(wchar_t *) _Py_normpath(wchar_t *path, Py_ssize_t size);
+
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(wchar_t*) _Py_normpath(wchar_t *path, Py_ssize_t size);
+
+extern wchar_t *_Py_normpath_and_size(wchar_t *path, Py_ssize_t size, Py_ssize_t *length);
 
 // The Windows Games API family does not provide these functions
 // so provide our own implementations. Remove them in case they get added
 // to the Games API family
 #if defined(MS_WINDOWS_GAMES) && !defined(MS_WINDOWS_DESKTOP)
-#include <winerror.h>
+#include <winerror.h>             // HRESULT
 
 extern HRESULT PathCchSkipRoot(const wchar_t *pszPath, const wchar_t **ppszRootEnd);
 #endif /* defined(MS_WINDOWS_GAMES) && !defined(MS_WINDOWS_DESKTOP) */
@@ -285,6 +312,18 @@ extern HRESULT PathCchSkipRoot(const wchar_t *pszPath, const wchar_t **ppszRootE
 #  define _Py_END_SUPPRESS_IPH
 #endif /* _MSC_VER >= 1900 */
 
+// Export for 'select' shared extension (Argument Clinic code)
+PyAPI_FUNC(int) _PyLong_FileDescriptor_Converter(PyObject *, void *);
+
+// Export for test_peg_generator
+PyAPI_FUNC(char*) _Py_UniversalNewlineFgetsWithSize(char *, int, FILE*, PyObject *, size_t*);
+
+extern int _PyFile_Flush(PyObject *);
+
+#ifndef MS_WINDOWS
+extern int _Py_GetTicksPerSecond(long *ticks_per_second);
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_fileutils_windows.h b/Include/internal/pycore_fileutils_windows.h
index e804d385e76708..b79aa9fb465376 100644
--- a/Include/internal/pycore_fileutils_windows.h
+++ b/Include/internal/pycore_fileutils_windows.h
@@ -5,7 +5,7 @@ extern "C" {
 #endif
 
 #ifndef Py_BUILD_CORE
-#  error "Py_BUILD_CORE must be defined to include this header"
+#  error "this header requires Py_BUILD_CORE define"
 #endif
 
 #ifdef MS_WINDOWS
diff --git a/Include/internal/pycore_floatobject.h b/Include/internal/pycore_floatobject.h
index 27c63bc87f3ee3..4e5474841bc25d 100644
--- a/Include/internal/pycore_floatobject.h
+++ b/Include/internal/pycore_floatobject.h
@@ -9,6 +9,8 @@ extern "C" {
 #endif
 
 
+#include "pycore_unicodeobject.h" // _PyUnicodeWriter
+
 /* runtime lifecycle */
 
 extern void _PyFloat_InitState(PyInterpreterState *);
@@ -53,18 +55,25 @@ struct _Py_float_state {
 void _PyFloat_ExactDealloc(PyObject *op);
 
 
-PyAPI_FUNC(void) _PyFloat_DebugMallocStats(FILE* out);
+extern void _PyFloat_DebugMallocStats(FILE* out);
 
 
 /* Format the object based on the format_spec, as defined in PEP 3101
    (Advanced String Formatting). */
-PyAPI_FUNC(int) _PyFloat_FormatAdvancedWriter(
+extern int _PyFloat_FormatAdvancedWriter(
     _PyUnicodeWriter *writer,
     PyObject *obj,
     PyObject *format_spec,
     Py_ssize_t start,
     Py_ssize_t end);
 
+extern PyObject* _Py_string_to_number_with_underscores(
+    const char *str, Py_ssize_t len, const char *what, PyObject *obj, void *arg,
+    PyObject *(*innerfunc)(const char *, Py_ssize_t, void *));
+
+extern double _Py_parse_inf_or_nan(const char *p, char **endptr);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_flowgraph.h b/Include/internal/pycore_flowgraph.h
index 720feb18636959..58fed46886ea45 100644
--- a/Include/internal/pycore_flowgraph.h
+++ b/Include/internal/pycore_flowgraph.h
@@ -11,103 +11,26 @@ extern "C" {
 #include "pycore_opcode_utils.h"
 #include "pycore_compile.h"
 
-
-typedef struct {
-    int i_opcode;
-    int i_oparg;
-    _PyCompilerSrcLocation i_loc;
-    struct _PyCfgBasicblock_ *i_target; /* target block (if jump instruction) */
-    struct _PyCfgBasicblock_ *i_except; /* target block when exception is raised */
-} _PyCfgInstruction;
-
 typedef struct {
     int id;
 } _PyCfgJumpTargetLabel;
 
+struct _PyCfgBuilder;
 
-typedef struct {
-    struct _PyCfgBasicblock_ *handlers[CO_MAXBLOCKS+1];
-    int depth;
-} _PyCfgExceptStack;
-
-typedef struct _PyCfgBasicblock_ {
-    /* Each basicblock in a compilation unit is linked via b_list in the
-       reverse order that the block are allocated.  b_list points to the next
-       block in this list, not to be confused with b_next, which is next by
-       control flow. */
-    struct _PyCfgBasicblock_ *b_list;
-    /* The label of this block if it is a jump target, -1 otherwise */
-    _PyCfgJumpTargetLabel b_label;
-    /* Exception stack at start of block, used by assembler to create the exception handling table */
-    _PyCfgExceptStack *b_exceptstack;
-    /* pointer to an array of instructions, initially NULL */
-    _PyCfgInstruction *b_instr;
-    /* If b_next is non-NULL, it is a pointer to the next
-       block reached by normal control flow. */
-    struct _PyCfgBasicblock_ *b_next;
-    /* number of instructions used */
-    int b_iused;
-    /* length of instruction array (b_instr) */
-    int b_ialloc;
-    /* Used by add_checks_for_loads_of_unknown_variables */
-    uint64_t b_unsafe_locals_mask;
-    /* Number of predecessors that a block has. */
-    int b_predecessors;
-    /* depth of stack upon entry of block, computed by stackdepth() */
-    int b_startdepth;
-    /* instruction offset for block, computed by assemble_jump_offsets() */
-    int b_offset;
-    /* Basic block is an exception handler that preserves lasti */
-    unsigned b_preserve_lasti : 1;
-    /* Used by compiler passes to mark whether they have visited a basic block. */
-    unsigned b_visited : 1;
-    /* b_except_handler is used by the cold-detection algorithm to mark exception targets */
-    unsigned b_except_handler : 1;
-    /* b_cold is true if this block is not perf critical (like an exception handler) */
-    unsigned b_cold : 1;
-    /* b_warm is used by the cold-detection algorithm to mark blocks which are definitely not cold */
-    unsigned b_warm : 1;
-} _PyCfgBasicblock;
-
-int _PyBasicblock_InsertInstruction(_PyCfgBasicblock *block, int pos, _PyCfgInstruction *instr);
+int _PyCfgBuilder_UseLabel(struct _PyCfgBuilder *g, _PyCfgJumpTargetLabel lbl);
+int _PyCfgBuilder_Addop(struct _PyCfgBuilder *g, int opcode, int oparg, _PyCompilerSrcLocation loc);
 
-typedef struct cfg_builder_ {
-    /* The entryblock, at which control flow begins. All blocks of the
-       CFG are reachable through the b_next links */
-    _PyCfgBasicblock *g_entryblock;
-    /* Pointer to the most recently allocated block.  By following
-       b_list links, you can reach all allocated blocks. */
-    _PyCfgBasicblock *g_block_list;
-    /* pointer to the block currently being constructed */
-    _PyCfgBasicblock *g_curblock;
-    /* label for the next instruction to be placed */
-    _PyCfgJumpTargetLabel g_current_label;
-} _PyCfgBuilder;
+struct _PyCfgBuilder* _PyCfgBuilder_New(void);
+void _PyCfgBuilder_Free(struct _PyCfgBuilder *g);
+int _PyCfgBuilder_CheckSize(struct _PyCfgBuilder* g);
 
-int _PyCfgBuilder_UseLabel(_PyCfgBuilder *g, _PyCfgJumpTargetLabel lbl);
-int _PyCfgBuilder_Addop(_PyCfgBuilder *g, int opcode, int oparg, _PyCompilerSrcLocation loc);
-
-int _PyCfgBuilder_Init(_PyCfgBuilder *g);
-void _PyCfgBuilder_Fini(_PyCfgBuilder *g);
-
-_PyCfgInstruction* _PyCfg_BasicblockLastInstr(const _PyCfgBasicblock *b);
-int _PyCfg_OptimizeCodeUnit(_PyCfgBuilder *g, PyObject *consts, PyObject *const_cache,
-                            int code_flags, int nlocals, int nparams, int firstlineno);
-int _PyCfg_Stackdepth(_PyCfgBasicblock *entryblock, int code_flags);
-void _PyCfg_ConvertPseudoOps(_PyCfgBasicblock *entryblock);
-int _PyCfg_ResolveJumps(_PyCfgBuilder *g);
-
-
-static inline int
-basicblock_nofallthrough(const _PyCfgBasicblock *b) {
-    _PyCfgInstruction *last = _PyCfg_BasicblockLastInstr(b);
-    return (last &&
-            (IS_SCOPE_EXIT_OPCODE(last->i_opcode) ||
-             IS_UNCONDITIONAL_JUMP_OPCODE(last->i_opcode)));
-}
+int _PyCfg_OptimizeCodeUnit(struct _PyCfgBuilder *g, PyObject *consts, PyObject *const_cache,
+                            int nlocals, int nparams, int firstlineno);
 
-#define BB_NO_FALLTHROUGH(B) (basicblock_nofallthrough(B))
-#define BB_HAS_FALLTHROUGH(B) (!basicblock_nofallthrough(B))
+int _PyCfg_ToInstructionSequence(struct _PyCfgBuilder *g, _PyCompile_InstructionSequence *seq);
+int _PyCfg_OptimizedCfgToInstructionSequence(struct _PyCfgBuilder *g, _PyCompile_CodeUnitMetadata *umd,
+                                             int code_flags, int *stackdepth, int *nlocalsplus,
+                                             _PyCompile_InstructionSequence *seq);
 
 PyCodeObject *
 _PyAssemble_MakeCodeObject(_PyCompile_CodeUnitMetadata *u, PyObject *const_cache,
diff --git a/Include/internal/pycore_frame.h b/Include/internal/pycore_frame.h
index a72e03f1438fc8..0f9e7333cf1e1c 100644
--- a/Include/internal/pycore_frame.h
+++ b/Include/internal/pycore_frame.h
@@ -4,9 +4,13 @@
 extern "C" {
 #endif
 
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
 #include <stdbool.h>
-#include <stddef.h>
-#include "pycore_code.h"         // STATS
+#include <stddef.h>               // offsetof()
+#include "pycore_code.h"          // STATS
 
 /* See Objects/frame_layout.md for an explanation of the frame stack
  * including explanation of the PyFrameObject and _PyInterpreterFrame
@@ -32,13 +36,17 @@ extern PyFrameObject* _PyFrame_New_NoTrack(PyCodeObject *code);
 /* other API */
 
 typedef enum _framestate {
-    FRAME_CREATED = -2,
-    FRAME_SUSPENDED = -1,
+    FRAME_CREATED = -3,
+    FRAME_SUSPENDED = -2,
+    FRAME_SUSPENDED_YIELD_FROM = -1,
     FRAME_EXECUTING = 0,
     FRAME_COMPLETED = 1,
     FRAME_CLEARED = 4
 } PyFrameState;
 
+#define FRAME_STATE_SUSPENDED(S) ((S) == FRAME_SUSPENDED || (S) == FRAME_SUSPENDED_YIELD_FROM)
+#define FRAME_STATE_FINISHED(S) ((S) >= FRAME_COMPLETED)
+
 enum _frameowner {
     FRAME_OWNED_BY_THREAD = 0,
     FRAME_OWNED_BY_GENERATOR = 1,
@@ -47,46 +55,41 @@ enum _frameowner {
 };
 
 typedef struct _PyInterpreterFrame {
-    PyCodeObject *f_code; /* Strong reference */
+    PyObject *f_executable; /* Strong reference */
     struct _PyInterpreterFrame *previous;
     PyObject *f_funcobj; /* Strong reference. Only valid if not on C stack */
     PyObject *f_globals; /* Borrowed reference. Only valid if not on C stack */
     PyObject *f_builtins; /* Borrowed reference. Only valid if not on C stack */
     PyObject *f_locals; /* Strong reference, may be NULL. Only valid if not on C stack */
     PyFrameObject *frame_obj; /* Strong reference, may be NULL. Only valid if not on C stack */
-    // NOTE: This is not necessarily the last instruction started in the given
-    // frame. Rather, it is the code unit *prior to* the *next* instruction. For
-    // example, it may be an inline CACHE entry, an instruction we just jumped
-    // over, or (in the case of a newly-created frame) a totally invalid value:
-    _Py_CODEUNIT *prev_instr;
+    _Py_CODEUNIT *instr_ptr; /* Instruction currently executing (or about to begin) */
     int stacktop;  /* Offset of TOS from localsplus  */
-    /* The return_offset determines where a `RETURN` should go in the caller,
-     * relative to `prev_instr`.
-     * It is only meaningful to the callee,
-     * so it needs to be set in any CALL (to a Python function)
-     * or SEND (to a coroutine or generator).
-     * If there is no callee, then it is meaningless. */
-    uint16_t return_offset;
+    uint16_t return_offset;  /* Only relevant during a function call */
     char owner;
     /* Locals and stack */
     PyObject *localsplus[1];
 } _PyInterpreterFrame;
 
 #define _PyInterpreterFrame_LASTI(IF) \
-    ((int)((IF)->prev_instr - _PyCode_CODE((IF)->f_code)))
+    ((int)((IF)->instr_ptr - _PyCode_CODE(_PyFrame_GetCode(IF))))
+
+static inline PyCodeObject *_PyFrame_GetCode(_PyInterpreterFrame *f) {
+    assert(PyCode_Check(f->f_executable));
+    return (PyCodeObject *)f->f_executable;
+}
 
 static inline PyObject **_PyFrame_Stackbase(_PyInterpreterFrame *f) {
-    return f->localsplus + f->f_code->co_nlocalsplus;
+    return f->localsplus + _PyFrame_GetCode(f)->co_nlocalsplus;
 }
 
 static inline PyObject *_PyFrame_StackPeek(_PyInterpreterFrame *f) {
-    assert(f->stacktop > f->f_code->co_nlocalsplus);
+    assert(f->stacktop > _PyFrame_GetCode(f)->co_nlocalsplus);
     assert(f->localsplus[f->stacktop-1] != NULL);
     return f->localsplus[f->stacktop-1];
 }
 
 static inline PyObject *_PyFrame_StackPop(_PyInterpreterFrame *f) {
-    assert(f->stacktop > f->f_code->co_nlocalsplus);
+    assert(f->stacktop > _PyFrame_GetCode(f)->co_nlocalsplus);
     f->stacktop--;
     return f->localsplus[f->stacktop];
 }
@@ -119,13 +122,13 @@ _PyFrame_Initialize(
     PyObject *locals, PyCodeObject *code, int null_locals_from)
 {
     frame->f_funcobj = (PyObject *)func;
-    frame->f_code = (PyCodeObject *)Py_NewRef(code);
+    frame->f_executable = Py_NewRef(code);
     frame->f_builtins = func->func_builtins;
     frame->f_globals = func->func_globals;
     frame->f_locals = locals;
     frame->stacktop = code->co_nlocalsplus;
     frame->frame_obj = NULL;
-    frame->prev_instr = _PyCode_CODE(code) - 1;
+    frame->instr_ptr = _PyCode_CODE(code);
     frame->return_offset = 0;
     frame->owner = FRAME_OWNED_BY_THREAD;
 
@@ -172,8 +175,11 @@ _PyFrame_SetStackPointer(_PyInterpreterFrame *frame, PyObject **stack_pointer)
 static inline bool
 _PyFrame_IsIncomplete(_PyInterpreterFrame *frame)
 {
+    if (frame->owner == FRAME_OWNED_BY_CSTACK) {
+        return true;
+    }
     return frame->owner != FRAME_OWNED_BY_GENERATOR &&
-    frame->prev_instr < _PyCode_CODE(frame->f_code) + frame->f_code->_co_firsttraceable;
+        frame->instr_ptr < _PyCode_CODE(_PyFrame_GetCode(frame)) + _PyFrame_GetCode(frame)->_co_firsttraceable;
 }
 
 static inline _PyInterpreterFrame *
@@ -188,7 +194,7 @@ _PyFrame_GetFirstComplete(_PyInterpreterFrame *frame)
 static inline _PyInterpreterFrame *
 _PyThreadState_GetFrame(PyThreadState *tstate)
 {
-    return _PyFrame_GetFirstComplete(tstate->cframe->current_frame);
+    return _PyFrame_GetFirstComplete(tstate->current_frame);
 }
 
 /* For use by _PyFrame_GetFrameObject
@@ -226,6 +232,9 @@ _PyFrame_ClearExceptCode(_PyInterpreterFrame * frame);
 int
 _PyFrame_Traverse(_PyInterpreterFrame *frame, visitproc visit, void *arg);
 
+PyObject *
+_PyFrame_GetLocals(_PyInterpreterFrame *frame, int include_hidden);
+
 int
 _PyFrame_FastToLocalsWithError(_PyInterpreterFrame *frame);
 
@@ -264,6 +273,30 @@ _PyFrame_PushUnchecked(PyThreadState *tstate, PyFunctionObject *func, int null_l
     return new_frame;
 }
 
+/* Pushes a trampoline frame without checking for space.
+ * Must be guarded by _PyThreadState_HasStackSpace() */
+static inline _PyInterpreterFrame *
+_PyFrame_PushTrampolineUnchecked(PyThreadState *tstate, PyCodeObject *code, int stackdepth)
+{
+    CALL_STAT_INC(frames_pushed);
+    _PyInterpreterFrame *frame = (_PyInterpreterFrame *)tstate->datastack_top;
+    tstate->datastack_top += code->co_framesize;
+    assert(tstate->datastack_top < tstate->datastack_limit);
+    frame->f_funcobj = Py_None;
+    frame->f_executable = Py_NewRef(code);
+#ifdef Py_DEBUG
+    frame->f_builtins = NULL;
+    frame->f_globals = NULL;
+#endif
+    frame->f_locals = NULL;
+    frame->stacktop = code->co_nlocalsplus + stackdepth;
+    frame->frame_obj = NULL;
+    frame->instr_ptr = _PyCode_CODE(code);
+    frame->owner = FRAME_OWNED_BY_THREAD;
+    frame->return_offset = 0;
+    return frame;
+}
+
 static inline
 PyGenObject *_PyFrame_GetGenerator(_PyInterpreterFrame *frame)
 {
diff --git a/Include/internal/pycore_function.h b/Include/internal/pycore_function.h
index 11988149843fef..3f3da8a44b77e4 100644
--- a/Include/internal/pycore_function.h
+++ b/Include/internal/pycore_function.h
@@ -8,15 +8,32 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+extern PyObject* _PyFunction_Vectorcall(
+    PyObject *func,
+    PyObject *const *stack,
+    size_t nargsf,
+    PyObject *kwnames);
+
 #define FUNC_MAX_WATCHERS 8
 
+#define FUNC_VERSION_CACHE_SIZE (1<<12)  /* Must be a power of 2 */
 struct _py_func_state {
     uint32_t next_version;
+    // Borrowed references to function objects whose
+    // func_version % FUNC_VERSION_CACHE_SIZE
+    // once was equal to the index in the table.
+    // They are cleared when the function is deallocated.
+    PyFunctionObject *func_version_cache[FUNC_VERSION_CACHE_SIZE];
 };
 
 extern PyFunctionObject* _PyFunction_FromConstructor(PyFrameConstructor *constr);
 
 extern uint32_t _PyFunction_GetVersionForCurrentState(PyFunctionObject *func);
+extern void _PyFunction_SetVersion(PyFunctionObject *func, uint32_t version);
+PyFunctionObject *_PyFunction_LookupByVersion(uint32_t version);
+
+extern PyObject *_Py_set_function_type_params(
+    PyThreadState* unused, PyObject *func, PyObject *type_params);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_gc.h b/Include/internal/pycore_gc.h
index b3abe2030a03da..2d33aa76d78229 100644
--- a/Include/internal/pycore_gc.h
+++ b/Include/internal/pycore_gc.h
@@ -19,10 +19,21 @@ typedef struct {
     uintptr_t _gc_prev;
 } PyGC_Head;
 
+#define _PyGC_Head_UNUSED PyGC_Head
+
+
+/* Get an object's GC head */
 static inline PyGC_Head* _Py_AS_GC(PyObject *op) {
-    return (_Py_CAST(PyGC_Head*, op) - 1);
+    char *gc = ((char*)op) - sizeof(PyGC_Head);
+    return (PyGC_Head*)gc;
 }
-#define _PyGC_Head_UNUSED PyGC_Head
+
+/* Get the object given the GC head */
+static inline PyObject* _Py_FROM_GC(PyGC_Head *gc) {
+    char *op = ((char *)gc) + sizeof(PyGC_Head);
+    return (PyObject *)op;
+}
+
 
 /* True if the object is currently tracked by the GC. */
 static inline int _PyObject_GC_IS_TRACKED(PyObject *op) {
@@ -57,19 +68,19 @@ static inline int _PyObject_GC_MAY_BE_TRACKED(PyObject *obj) {
 // But it is always 0 for normal code.
 static inline PyGC_Head* _PyGCHead_NEXT(PyGC_Head *gc) {
     uintptr_t next = gc->_gc_next;
-    return _Py_CAST(PyGC_Head*, next);
+    return (PyGC_Head*)next;
 }
 static inline void _PyGCHead_SET_NEXT(PyGC_Head *gc, PyGC_Head *next) {
-    gc->_gc_next = _Py_CAST(uintptr_t, next);
+    gc->_gc_next = (uintptr_t)next;
 }
 
 // Lowest two bits of _gc_prev is used for _PyGC_PREV_MASK_* flags.
 static inline PyGC_Head* _PyGCHead_PREV(PyGC_Head *gc) {
     uintptr_t prev = (gc->_gc_prev & _PyGC_PREV_MASK);
-    return _Py_CAST(PyGC_Head*, prev);
+    return (PyGC_Head*)prev;
 }
 static inline void _PyGCHead_SET_PREV(PyGC_Head *gc, PyGC_Head *prev) {
-    uintptr_t uprev = _Py_CAST(uintptr_t, prev);
+    uintptr_t uprev = (uintptr_t)prev;
     assert((uprev & ~_PyGC_PREV_MASK) == 0);
     gc->_gc_prev = ((gc->_gc_prev & ~_PyGC_PREV_MASK) | uprev);
 }
diff --git a/Include/internal/pycore_genobject.h b/Include/internal/pycore_genobject.h
index dc60b4ca705112..cf58a2750a31f9 100644
--- a/Include/internal/pycore_genobject.h
+++ b/Include/internal/pycore_genobject.h
@@ -9,9 +9,21 @@ extern "C" {
 #endif
 
 extern PyObject *_PyGen_yf(PyGenObject *);
+extern void _PyGen_Finalize(PyObject *self);
+
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyGen_SetStopIterationValue(PyObject *);
+
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyGen_FetchStopIterationValue(PyObject **);
+
 extern PyObject *_PyCoro_GetAwaitableIter(PyObject *o);
 extern PyObject *_PyAsyncGenValueWrapperNew(PyThreadState *state, PyObject *);
 
+extern PyTypeObject _PyCoroWrapper_Type;
+extern PyTypeObject _PyAsyncGenWrappedValue_Type;
+extern PyTypeObject _PyAsyncGenAThrow_Type;
+
 /* runtime lifecycle */
 
 extern void _PyAsyncGen_Fini(PyInterpreterState *);
diff --git a/Include/internal/pycore_gil.h b/Include/internal/pycore_gil.h
index 8ebad37b686cd4..19b0d23a68568a 100644
--- a/Include/internal/pycore_gil.h
+++ b/Include/internal/pycore_gil.h
@@ -8,8 +8,7 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_atomic.h"    /* _Py_atomic_address */
-#include "pycore_condvar.h"   /* PyCOND_T */
+#include "pycore_condvar.h"       // PyCOND_T
 
 #ifndef Py_HAVE_CONDVAR
 #  error You need either a POSIX-compatible or a Windows system!
@@ -25,10 +24,10 @@ struct _gil_runtime_state {
     unsigned long interval;
     /* Last PyThreadState holding / having held the GIL. This helps us
        know whether anyone else was scheduled after we dropped the GIL. */
-    _Py_atomic_address last_holder;
+    PyThreadState* last_holder;
     /* Whether the GIL is already taken (-1 if uninitialized). This is
        atomic because it can be read without any lock taken in ceval.c. */
-    _Py_atomic_int locked;
+    int locked;
     /* Number of GIL switches since the beginning. */
     unsigned long switch_number;
     /* This condition variable allows one or several threads to wait
diff --git a/Include/internal/pycore_global_objects.h b/Include/internal/pycore_global_objects.h
index 64d9384df9c5c5..327fcc24cb29f1 100644
--- a/Include/internal/pycore_global_objects.h
+++ b/Include/internal/pycore_global_objects.h
@@ -8,10 +8,11 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_gc.h"              // PyGC_Head
+#include "pycore_context.h"         // _PyContextTokenMissing
+#include "pycore_gc.h"              // _PyGC_Head_UNUSED
 #include "pycore_global_strings.h"  // struct _Py_global_strings
 #include "pycore_hamt.h"            // PyHamtNode_Bitmap
-#include "pycore_context.h"         // _PyContextTokenMissing
+#include "pycore_hashtable.h"       // _Py_hashtable_t
 #include "pycore_typeobject.h"      // pytype_slotdef
 
 
@@ -28,6 +29,11 @@ extern "C" {
 #define _Py_SINGLETON(NAME) \
     _Py_GLOBAL_OBJECT(singletons.NAME)
 
+struct _Py_cached_objects {
+    // XXX We could statically allocate the hashtable.
+    _Py_hashtable_t *interned_strings;
+};
+
 struct _Py_static_objects {
     struct {
         /* Small integers are preallocated in this array so that they
@@ -68,6 +74,13 @@ struct _Py_interp_cached_objects {
     PyObject *type_slots_pname;
     pytype_slotdef *type_slots_ptrs[MAX_EQUIV];
 
+    /* TypeVar and related types */
+    PyTypeObject *generic_type;
+    PyTypeObject *typevar_type;
+    PyTypeObject *typevartuple_type;
+    PyTypeObject *paramspec_type;
+    PyTypeObject *paramspecargs_type;
+    PyTypeObject *paramspeckwargs_type;
 };
 
 #define _Py_INTERP_STATIC_OBJECT(interp, NAME) \
diff --git a/Include/internal/pycore_global_objects_fini_generated.h b/Include/internal/pycore_global_objects_fini_generated.h
index 7e495817981f06..89ec8cbbbcd649 100644
--- a/Include/internal/pycore_global_objects_fini_generated.h
+++ b/Include/internal/pycore_global_objects_fini_generated.h
@@ -12,9 +12,8 @@ extern "C" {
 static inline void
 _PyStaticObject_CheckRefcnt(PyObject *obj) {
     if (Py_REFCNT(obj) < _Py_IMMORTAL_REFCNT) {
-        _PyObject_ASSERT_FAILED_MSG(obj,
-            "immortal object has less refcnt than expected "
-            "_Py_IMMORTAL_REFCNT");
+        fprintf(stderr, "Immortal Object has less refcnt than expected.\n");
+        _PyObject_Dump(obj);
     }
 }
 #endif
@@ -548,6 +547,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_lambda));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_listcomp));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_module));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_null));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_setcomp));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_string));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_unknown));
@@ -555,15 +555,18 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dbl_close_br));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dbl_open_br));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dbl_percent));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(defaults));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dot));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dot_locals));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(empty));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(generic_base));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(json_decoder));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(kwdefaults));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(list_err));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(newline));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(open_br));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(percent));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(shim_name));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(type_params));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(utf_8));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(CANCELLED));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(FINISHED));
@@ -602,6 +605,8 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__class__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__class_getitem__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__classcell__));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__classdict__));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__classdictcell__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__complex__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__contains__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__copy__));
@@ -664,6 +669,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__lshift__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__lt__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__main__));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__match_args__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__matmul__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__missing__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__mod__));
@@ -724,6 +730,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__subclasshook__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__truediv__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__trunc__));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__type_params__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__typing_is_unpacked_typevartuple__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__typing_prepare_subst__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__typing_subst__));
@@ -774,6 +781,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(a));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(abs_tol));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(access));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(aclose));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(add));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(add_done_callback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(after_in_child));
@@ -784,7 +792,9 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(arguments));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(argv));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(as_integer_ratio));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(asend));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ast));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(athrow));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(attribute));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(authorizer_callback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(autocommit));
@@ -795,6 +805,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(big));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(binary_form));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(block));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(bound));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(buffer));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(buffer_callback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(buffer_size));
@@ -815,6 +826,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(call));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(call_exception_handler));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(call_soon));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(callback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cancel));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(capath));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(category));
@@ -850,11 +862,13 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(compile_mode));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(consts));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(context));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(contravariant));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cookie));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(copy));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(copyreg));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(coro));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(count));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(covariant));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cwd));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(d));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(data));
@@ -883,7 +897,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(dont_inherit));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(dst));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(dst_dir_fd));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(duration));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(e));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(eager_start));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(effective_ids));
@@ -899,12 +912,13 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(errors));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(event));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(eventmask));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(exc_type));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(exc_value));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(excepthook));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(exception));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(existing_file_name));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(exp));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(extend));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(extra_tokens));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(f));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(facility));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(factory));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(false));
@@ -928,7 +942,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(flush));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(follow_symlinks));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(format));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(frequency));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(from_param));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(fromlist));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(fromtimestamp));
@@ -936,6 +949,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(fset));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(func));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(future));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(g));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(generation));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(genexpr));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(get));
@@ -949,6 +963,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(globals));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(groupindex));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(groups));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(h));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(handle));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(hash_name));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(header));
@@ -957,6 +972,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(hook));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(id));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ident));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(identity_hint));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ignore));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(imag));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(importlib));
@@ -964,6 +980,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(incoming));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(indexgroup));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(inf));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(infer_variance));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(inheritable));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(initial));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(initial_bytes));
@@ -976,6 +993,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(instructions));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(intern));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(intersection));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(interval));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(is_running));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(isatty));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(isinstance));
@@ -1053,10 +1071,12 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(namespaces));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(narg));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ndigits));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(new_file_name));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(new_limit));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(newline));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(newlines));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(next));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(nlocals));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(node_depth));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(node_offset));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ns));
@@ -1080,6 +1100,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(optimize));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(options));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(order));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(origin));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(out_fd));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(outgoing));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(overlapped));
@@ -1105,6 +1126,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(priority));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(progress));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(progress_handler));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(progress_routine));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(proto));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(protocol));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ps1));
@@ -1164,7 +1186,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(sleep));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(sock));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(sort));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(sound));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(source));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(source_traceback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(src));
@@ -1177,6 +1198,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(stdin));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(stdout));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(step));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(steps));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(store_name));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(strategy));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(strftime));
@@ -1205,7 +1227,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(timetuple));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(top));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(trace_callback));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(traceback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(trailers));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(translate));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(true));
@@ -1213,6 +1234,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(twice));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(txt));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(type));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(type_params));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(tz));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(tzname));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(uid));
diff --git a/Include/internal/pycore_global_strings.h b/Include/internal/pycore_global_strings.h
index 8ebfee85c87c23..62c3ee3ae2a0bd 100644
--- a/Include/internal/pycore_global_strings.h
+++ b/Include/internal/pycore_global_strings.h
@@ -33,6 +33,7 @@ struct _Py_global_strings {
         STRUCT_FOR_STR(anon_lambda, "<lambda>")
         STRUCT_FOR_STR(anon_listcomp, "<listcomp>")
         STRUCT_FOR_STR(anon_module, "<module>")
+        STRUCT_FOR_STR(anon_null, "<NULL>")
         STRUCT_FOR_STR(anon_setcomp, "<setcomp>")
         STRUCT_FOR_STR(anon_string, "<string>")
         STRUCT_FOR_STR(anon_unknown, "<unknown>")
@@ -40,15 +41,18 @@ struct _Py_global_strings {
         STRUCT_FOR_STR(dbl_close_br, "}}")
         STRUCT_FOR_STR(dbl_open_br, "{{")
         STRUCT_FOR_STR(dbl_percent, "%%")
+        STRUCT_FOR_STR(defaults, ".defaults")
         STRUCT_FOR_STR(dot, ".")
         STRUCT_FOR_STR(dot_locals, ".<locals>")
         STRUCT_FOR_STR(empty, "")
+        STRUCT_FOR_STR(generic_base, ".generic_base")
         STRUCT_FOR_STR(json_decoder, "json.decoder")
+        STRUCT_FOR_STR(kwdefaults, ".kwdefaults")
         STRUCT_FOR_STR(list_err, "list index out of range")
         STRUCT_FOR_STR(newline, "\n")
         STRUCT_FOR_STR(open_br, "{")
         STRUCT_FOR_STR(percent, "%")
-        STRUCT_FOR_STR(shim_name, "<shim>")
+        STRUCT_FOR_STR(type_params, ".type_params")
         STRUCT_FOR_STR(utf_8, "utf-8")
     } literals;
 
@@ -90,6 +94,8 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(__class__)
         STRUCT_FOR_ID(__class_getitem__)
         STRUCT_FOR_ID(__classcell__)
+        STRUCT_FOR_ID(__classdict__)
+        STRUCT_FOR_ID(__classdictcell__)
         STRUCT_FOR_ID(__complex__)
         STRUCT_FOR_ID(__contains__)
         STRUCT_FOR_ID(__copy__)
@@ -152,6 +158,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(__lshift__)
         STRUCT_FOR_ID(__lt__)
         STRUCT_FOR_ID(__main__)
+        STRUCT_FOR_ID(__match_args__)
         STRUCT_FOR_ID(__matmul__)
         STRUCT_FOR_ID(__missing__)
         STRUCT_FOR_ID(__mod__)
@@ -212,6 +219,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(__subclasshook__)
         STRUCT_FOR_ID(__truediv__)
         STRUCT_FOR_ID(__trunc__)
+        STRUCT_FOR_ID(__type_params__)
         STRUCT_FOR_ID(__typing_is_unpacked_typevartuple__)
         STRUCT_FOR_ID(__typing_prepare_subst__)
         STRUCT_FOR_ID(__typing_subst__)
@@ -262,6 +270,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(a)
         STRUCT_FOR_ID(abs_tol)
         STRUCT_FOR_ID(access)
+        STRUCT_FOR_ID(aclose)
         STRUCT_FOR_ID(add)
         STRUCT_FOR_ID(add_done_callback)
         STRUCT_FOR_ID(after_in_child)
@@ -272,7 +281,9 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(arguments)
         STRUCT_FOR_ID(argv)
         STRUCT_FOR_ID(as_integer_ratio)
+        STRUCT_FOR_ID(asend)
         STRUCT_FOR_ID(ast)
+        STRUCT_FOR_ID(athrow)
         STRUCT_FOR_ID(attribute)
         STRUCT_FOR_ID(authorizer_callback)
         STRUCT_FOR_ID(autocommit)
@@ -283,6 +294,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(big)
         STRUCT_FOR_ID(binary_form)
         STRUCT_FOR_ID(block)
+        STRUCT_FOR_ID(bound)
         STRUCT_FOR_ID(buffer)
         STRUCT_FOR_ID(buffer_callback)
         STRUCT_FOR_ID(buffer_size)
@@ -303,6 +315,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(call)
         STRUCT_FOR_ID(call_exception_handler)
         STRUCT_FOR_ID(call_soon)
+        STRUCT_FOR_ID(callback)
         STRUCT_FOR_ID(cancel)
         STRUCT_FOR_ID(capath)
         STRUCT_FOR_ID(category)
@@ -338,11 +351,13 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(compile_mode)
         STRUCT_FOR_ID(consts)
         STRUCT_FOR_ID(context)
+        STRUCT_FOR_ID(contravariant)
         STRUCT_FOR_ID(cookie)
         STRUCT_FOR_ID(copy)
         STRUCT_FOR_ID(copyreg)
         STRUCT_FOR_ID(coro)
         STRUCT_FOR_ID(count)
+        STRUCT_FOR_ID(covariant)
         STRUCT_FOR_ID(cwd)
         STRUCT_FOR_ID(d)
         STRUCT_FOR_ID(data)
@@ -371,7 +386,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(dont_inherit)
         STRUCT_FOR_ID(dst)
         STRUCT_FOR_ID(dst_dir_fd)
-        STRUCT_FOR_ID(duration)
         STRUCT_FOR_ID(e)
         STRUCT_FOR_ID(eager_start)
         STRUCT_FOR_ID(effective_ids)
@@ -387,12 +401,13 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(errors)
         STRUCT_FOR_ID(event)
         STRUCT_FOR_ID(eventmask)
-        STRUCT_FOR_ID(exc_type)
-        STRUCT_FOR_ID(exc_value)
         STRUCT_FOR_ID(excepthook)
         STRUCT_FOR_ID(exception)
+        STRUCT_FOR_ID(existing_file_name)
         STRUCT_FOR_ID(exp)
         STRUCT_FOR_ID(extend)
+        STRUCT_FOR_ID(extra_tokens)
+        STRUCT_FOR_ID(f)
         STRUCT_FOR_ID(facility)
         STRUCT_FOR_ID(factory)
         STRUCT_FOR_ID(false)
@@ -416,7 +431,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(flush)
         STRUCT_FOR_ID(follow_symlinks)
         STRUCT_FOR_ID(format)
-        STRUCT_FOR_ID(frequency)
         STRUCT_FOR_ID(from_param)
         STRUCT_FOR_ID(fromlist)
         STRUCT_FOR_ID(fromtimestamp)
@@ -424,6 +438,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(fset)
         STRUCT_FOR_ID(func)
         STRUCT_FOR_ID(future)
+        STRUCT_FOR_ID(g)
         STRUCT_FOR_ID(generation)
         STRUCT_FOR_ID(genexpr)
         STRUCT_FOR_ID(get)
@@ -437,6 +452,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(globals)
         STRUCT_FOR_ID(groupindex)
         STRUCT_FOR_ID(groups)
+        STRUCT_FOR_ID(h)
         STRUCT_FOR_ID(handle)
         STRUCT_FOR_ID(hash_name)
         STRUCT_FOR_ID(header)
@@ -445,6 +461,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(hook)
         STRUCT_FOR_ID(id)
         STRUCT_FOR_ID(ident)
+        STRUCT_FOR_ID(identity_hint)
         STRUCT_FOR_ID(ignore)
         STRUCT_FOR_ID(imag)
         STRUCT_FOR_ID(importlib)
@@ -452,6 +469,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(incoming)
         STRUCT_FOR_ID(indexgroup)
         STRUCT_FOR_ID(inf)
+        STRUCT_FOR_ID(infer_variance)
         STRUCT_FOR_ID(inheritable)
         STRUCT_FOR_ID(initial)
         STRUCT_FOR_ID(initial_bytes)
@@ -464,6 +482,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(instructions)
         STRUCT_FOR_ID(intern)
         STRUCT_FOR_ID(intersection)
+        STRUCT_FOR_ID(interval)
         STRUCT_FOR_ID(is_running)
         STRUCT_FOR_ID(isatty)
         STRUCT_FOR_ID(isinstance)
@@ -541,10 +560,12 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(namespaces)
         STRUCT_FOR_ID(narg)
         STRUCT_FOR_ID(ndigits)
+        STRUCT_FOR_ID(new_file_name)
         STRUCT_FOR_ID(new_limit)
         STRUCT_FOR_ID(newline)
         STRUCT_FOR_ID(newlines)
         STRUCT_FOR_ID(next)
+        STRUCT_FOR_ID(nlocals)
         STRUCT_FOR_ID(node_depth)
         STRUCT_FOR_ID(node_offset)
         STRUCT_FOR_ID(ns)
@@ -568,6 +589,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(optimize)
         STRUCT_FOR_ID(options)
         STRUCT_FOR_ID(order)
+        STRUCT_FOR_ID(origin)
         STRUCT_FOR_ID(out_fd)
         STRUCT_FOR_ID(outgoing)
         STRUCT_FOR_ID(overlapped)
@@ -593,6 +615,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(priority)
         STRUCT_FOR_ID(progress)
         STRUCT_FOR_ID(progress_handler)
+        STRUCT_FOR_ID(progress_routine)
         STRUCT_FOR_ID(proto)
         STRUCT_FOR_ID(protocol)
         STRUCT_FOR_ID(ps1)
@@ -652,7 +675,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(sleep)
         STRUCT_FOR_ID(sock)
         STRUCT_FOR_ID(sort)
-        STRUCT_FOR_ID(sound)
         STRUCT_FOR_ID(source)
         STRUCT_FOR_ID(source_traceback)
         STRUCT_FOR_ID(src)
@@ -665,6 +687,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(stdin)
         STRUCT_FOR_ID(stdout)
         STRUCT_FOR_ID(step)
+        STRUCT_FOR_ID(steps)
         STRUCT_FOR_ID(store_name)
         STRUCT_FOR_ID(strategy)
         STRUCT_FOR_ID(strftime)
@@ -693,7 +716,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(timetuple)
         STRUCT_FOR_ID(top)
         STRUCT_FOR_ID(trace_callback)
-        STRUCT_FOR_ID(traceback)
         STRUCT_FOR_ID(trailers)
         STRUCT_FOR_ID(translate)
         STRUCT_FOR_ID(true)
@@ -701,6 +723,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(twice)
         STRUCT_FOR_ID(txt)
         STRUCT_FOR_ID(type)
+        STRUCT_FOR_ID(type_params)
         STRUCT_FOR_ID(tz)
         STRUCT_FOR_ID(tzname)
         STRUCT_FOR_ID(uid)
diff --git a/Include/internal/pycore_hashtable.h b/Include/internal/pycore_hashtable.h
index 6501ab14d27684..369d49c42bbfcc 100644
--- a/Include/internal/pycore_hashtable.h
+++ b/Include/internal/pycore_hashtable.h
@@ -70,6 +70,11 @@ struct _Py_hashtable_t {
     _Py_hashtable_allocator_t alloc;
 };
 
+// Export _Py_hashtable functions for '_testinternalcapi' shared extension
+PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_new(
+    _Py_hashtable_hash_func hash_func,
+    _Py_hashtable_compare_func compare_func);
+
 /* Hash a pointer (void*) */
 PyAPI_FUNC(Py_uhash_t) _Py_hashtable_hash_ptr(const void *key);
 
@@ -78,10 +83,6 @@ PyAPI_FUNC(int) _Py_hashtable_compare_direct(
     const void *key1,
     const void *key2);
 
-PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_new(
-    _Py_hashtable_hash_func hash_func,
-    _Py_hashtable_compare_func compare_func);
-
 PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_new_full(
     _Py_hashtable_hash_func hash_func,
     _Py_hashtable_compare_func compare_func,
@@ -106,6 +107,7 @@ PyAPI_FUNC(int) _Py_hashtable_foreach(
     void *user_data);
 
 PyAPI_FUNC(size_t) _Py_hashtable_size(const _Py_hashtable_t *ht);
+PyAPI_FUNC(size_t) _Py_hashtable_len(const _Py_hashtable_t *ht);
 
 /* Add a new entry to the hash. The key must not be present in the hash table.
    Return 0 on success, -1 on memory error. */
diff --git a/Include/internal/pycore_identifier.h b/Include/internal/pycore_identifier.h
new file mode 100644
index 00000000000000..cda28810a48196
--- /dev/null
+++ b/Include/internal/pycore_identifier.h
@@ -0,0 +1,20 @@
+/* String Literals: _Py_Identifier API */
+
+#ifndef Py_INTERNAL_IDENTIFIER_H
+#define Py_INTERNAL_IDENTIFIER_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+extern PyObject* _PyType_LookupId(PyTypeObject *, _Py_Identifier *);
+extern PyObject* _PyObject_LookupSpecialId(PyObject *, _Py_Identifier *);
+extern int _PyObject_SetAttrId(PyObject *, _Py_Identifier *, PyObject *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_IDENTIFIER_H
diff --git a/Include/internal/pycore_import.h b/Include/internal/pycore_import.h
index 0a9f24efbdb908..c84f87a831bf38 100644
--- a/Include/internal/pycore_import.h
+++ b/Include/internal/pycore_import.h
@@ -5,6 +5,38 @@
 extern "C" {
 #endif
 
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_lock.h"          // PyMutex
+#include "pycore_hashtable.h"     // _Py_hashtable_t
+#include "pycore_time.h"          // _PyTime_t
+
+extern int _PyImport_IsInitialized(PyInterpreterState *);
+
+// Export for 'pyexpat' shared extension
+PyAPI_FUNC(int) _PyImport_SetModule(PyObject *name, PyObject *module);
+
+extern int _PyImport_SetModuleString(const char *name, PyObject* module);
+
+extern void _PyImport_AcquireLock(PyInterpreterState *interp);
+extern int _PyImport_ReleaseLock(PyInterpreterState *interp);
+
+extern int _PyImport_FixupBuiltin(
+    PyObject *mod,
+    const char *name,            /* UTF-8 encoded string */
+    PyObject *modules
+    );
+extern int _PyImport_FixupExtensionObject(PyObject*, PyObject *,
+                                          PyObject *, PyObject *);
+
+// Export for many shared extensions, like '_json'
+PyAPI_FUNC(PyObject*) _PyImport_GetModuleAttr(PyObject *, PyObject *);
+
+// Export for many shared extensions, like '_datetime'
+PyAPI_FUNC(PyObject*) _PyImport_GetModuleAttrString(const char *, const char *);
+
 
 struct _import_runtime_state {
     /* The builtin modules (defined in config.c). */
@@ -15,19 +47,15 @@ struct _import_runtime_state {
        See PyInterpreterState.modules_by_index for more info. */
     Py_ssize_t last_module_index;
     struct {
-        /* A thread state tied to the main interpreter,
-           used exclusively for when the extensions dict is access/modified
-           from an arbitrary thread. */
-        PyThreadState main_tstate;
-        /* A lock to guard the dict. */
-        PyThread_type_lock mutex;
-        /* A dict mapping (filename, name) to PyModuleDef for modules.
+        /* A lock to guard the cache. */
+        PyMutex mutex;
+        /* The actual cache of (filename, name, PyModuleDef) for modules.
            Only legacy (single-phase init) extension modules are added
            and only if they support multiple initialization (m_size >- 0)
            or are imported in the main interpreter.
            This is initialized lazily in _PyImport_FixupExtensionObject().
            Modules are added there and looked up in _imp.find_extension(). */
-        PyObject *dict;
+        _Py_hashtable_t *hashtable;
     } extensions;
     /* Package context -- the full module name for package imports */
     const char * pkgcontext;
@@ -81,7 +109,7 @@ struct _import_state {
 };
 
 #ifdef HAVE_DLOPEN
-#  include <dlfcn.h>
+#  include <dlfcn.h>              // RTLD_NOW, RTLD_LAZY
 #  if HAVE_DECL_RTLD_NOW
 #    define _Py_DLOPEN_FLAGS RTLD_NOW
 #  else
@@ -165,16 +193,18 @@ struct _module_alias {
     const char *orig;                 /* ASCII encoded string */
 };
 
-PyAPI_DATA(const struct _frozen *) _PyImport_FrozenBootstrap;
-PyAPI_DATA(const struct _frozen *) _PyImport_FrozenStdlib;
-PyAPI_DATA(const struct _frozen *) _PyImport_FrozenTest;
+// Export these 3 symbols for test_ctypes
+PyAPI_DATA(const struct _frozen*) _PyImport_FrozenBootstrap;
+PyAPI_DATA(const struct _frozen*) _PyImport_FrozenStdlib;
+PyAPI_DATA(const struct _frozen*) _PyImport_FrozenTest;
+
 extern const struct _module_alias * _PyImport_FrozenAliases;
 
-PyAPI_FUNC(int) _PyImport_CheckSubinterpIncompatibleExtensionAllowed(
+extern int _PyImport_CheckSubinterpIncompatibleExtensionAllowed(
     const char *name);
 
 
-// for testing
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(int) _PyImport_ClearExtension(PyObject *name, PyObject *filename);
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_importdl.h b/Include/internal/pycore_importdl.h
new file mode 100644
index 00000000000000..c8583582b358ac
--- /dev/null
+++ b/Include/internal/pycore_importdl.h
@@ -0,0 +1,57 @@
+#ifndef Py_INTERNAL_IMPORTDL_H
+#define Py_INTERNAL_IMPORTDL_H
+
+#include "patchlevel.h"           // PY_MAJOR_VERSION
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+
+extern const char *_PyImport_DynLoadFiletab[];
+
+extern PyObject *_PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *);
+
+typedef PyObject *(*PyModInitFunction)(void);
+
+/* Max length of module suffix searched for -- accommodates "module.slb" */
+#define MAXSUFFIXSIZE 12
+
+#ifdef MS_WINDOWS
+#include <windows.h>
+typedef FARPROC dl_funcptr;
+
+#ifdef _DEBUG
+#  define PYD_DEBUG_SUFFIX "_d"
+#else
+#  define PYD_DEBUG_SUFFIX ""
+#endif
+
+#ifdef Py_GIL_DISABLED
+#  define PYD_THREADING_TAG "t"
+#else
+#  define PYD_THREADING_TAG ""
+#endif
+
+#ifdef PYD_PLATFORM_TAG
+#  define PYD_SOABI "cp" Py_STRINGIFY(PY_MAJOR_VERSION) Py_STRINGIFY(PY_MINOR_VERSION) PYD_THREADING_TAG "-" PYD_PLATFORM_TAG
+#else
+#  define PYD_SOABI "cp" Py_STRINGIFY(PY_MAJOR_VERSION) Py_STRINGIFY(PY_MINOR_VERSION) PYD_THREADING_TAG
+#endif
+
+#define PYD_TAGGED_SUFFIX PYD_DEBUG_SUFFIX "." PYD_SOABI ".pyd"
+#define PYD_UNTAGGED_SUFFIX PYD_DEBUG_SUFFIX ".pyd"
+
+#else
+typedef void (*dl_funcptr)(void);
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_IMPORTDL_H */
diff --git a/Include/internal/pycore_initconfig.h b/Include/internal/pycore_initconfig.h
index 4cbd14a61d4545..c86988234f6a05 100644
--- a/Include/internal/pycore_initconfig.h
+++ b/Include/internal/pycore_initconfig.h
@@ -22,7 +22,7 @@ struct pyruntimestate;
 #endif
 
 #define _PyStatus_OK() \
-    (PyStatus){._type = _PyStatus_TYPE_OK,}
+    (PyStatus){._type = _PyStatus_TYPE_OK}
     /* other fields are set to 0 */
 #define _PyStatus_ERR(ERR_MSG) \
     (PyStatus){ \
@@ -30,7 +30,8 @@ struct pyruntimestate;
         .func = _PyStatus_GET_FUNC(), \
         .err_msg = (ERR_MSG)}
         /* other fields are set to 0 */
-#define _PyStatus_NO_MEMORY() _PyStatus_ERR("memory allocation failed")
+#define _PyStatus_NO_MEMORY_ERRMSG "memory allocation failed"
+#define _PyStatus_NO_MEMORY() _PyStatus_ERR(_PyStatus_NO_MEMORY_ERRMSG)
 #define _PyStatus_EXIT(EXITCODE) \
     (PyStatus){ \
         ._type = _PyStatus_TYPE_EXIT, \
@@ -44,19 +45,23 @@ struct pyruntimestate;
 #define _PyStatus_UPDATE_FUNC(err) \
     do { (err).func = _PyStatus_GET_FUNC(); } while (0)
 
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(void) _PyErr_SetFromPyStatus(PyStatus status);
+
+
 /* --- PyWideStringList ------------------------------------------------ */
 
 #define _PyWideStringList_INIT (PyWideStringList){.length = 0, .items = NULL}
 
 #ifndef NDEBUG
-PyAPI_FUNC(int) _PyWideStringList_CheckConsistency(const PyWideStringList *list);
+extern int _PyWideStringList_CheckConsistency(const PyWideStringList *list);
 #endif
-PyAPI_FUNC(void) _PyWideStringList_Clear(PyWideStringList *list);
-PyAPI_FUNC(int) _PyWideStringList_Copy(PyWideStringList *list,
+extern void _PyWideStringList_Clear(PyWideStringList *list);
+extern int _PyWideStringList_Copy(PyWideStringList *list,
     const PyWideStringList *list2);
-PyAPI_FUNC(PyStatus) _PyWideStringList_Extend(PyWideStringList *list,
+extern PyStatus _PyWideStringList_Extend(PyWideStringList *list,
     const PyWideStringList *list2);
-PyAPI_FUNC(PyObject*) _PyWideStringList_AsList(const PyWideStringList *list);
+extern PyObject* _PyWideStringList_AsList(const PyWideStringList *list);
 
 
 /* --- _PyArgv ---------------------------------------------------- */
@@ -68,28 +73,28 @@ typedef struct _PyArgv {
     wchar_t * const *wchar_argv;
 } _PyArgv;
 
-PyAPI_FUNC(PyStatus) _PyArgv_AsWstrList(const _PyArgv *args,
+extern PyStatus _PyArgv_AsWstrList(const _PyArgv *args,
     PyWideStringList *list);
 
 
 /* --- Helper functions ------------------------------------------- */
 
-PyAPI_FUNC(int) _Py_str_to_int(
+extern int _Py_str_to_int(
     const char *str,
     int *result);
-PyAPI_FUNC(const wchar_t*) _Py_get_xoption(
+extern const wchar_t* _Py_get_xoption(
     const PyWideStringList *xoptions,
     const wchar_t *name);
-PyAPI_FUNC(const char*) _Py_GetEnv(
+extern const char* _Py_GetEnv(
     int use_environment,
     const char *name);
-PyAPI_FUNC(void) _Py_get_env_flag(
+extern void _Py_get_env_flag(
     int use_environment,
     int *flag,
     const char *name);
 
 /* Py_GetArgcArgv() helper */
-PyAPI_FUNC(void) _Py_ClearArgcArgv(void);
+extern void _Py_ClearArgcArgv(void);
 
 
 /* --- _PyPreCmdline ------------------------------------------------- */
@@ -122,7 +127,9 @@ extern PyStatus _PyPreCmdline_Read(_PyPreCmdline *cmdline,
 
 /* --- PyPreConfig ----------------------------------------------- */
 
+// Export for '_testembed' program
 PyAPI_FUNC(void) _PyPreConfig_InitCompatConfig(PyPreConfig *preconfig);
+
 extern void _PyPreConfig_InitFromConfig(
     PyPreConfig *preconfig,
     const PyConfig *config);
@@ -146,7 +153,9 @@ typedef enum {
     _PyConfig_INIT_ISOLATED = 3
 } _PyConfigInitEnum;
 
+// Export for '_testembed' program
 PyAPI_FUNC(void) _PyConfig_InitCompatConfig(PyConfig *config);
+
 extern PyStatus _PyConfig_Copy(
     PyConfig *config,
     const PyConfig *config2);
@@ -161,16 +170,16 @@ extern PyStatus _PyConfig_SetPyArgv(
     PyConfig *config,
     const _PyArgv *args);
 
-PyAPI_FUNC(PyObject*) _PyConfig_AsDict(const PyConfig *config);
-PyAPI_FUNC(int) _PyConfig_FromDict(PyConfig *config, PyObject *dict);
 
 extern void _Py_DumpPathConfig(PyThreadState *tstate);
 
-PyAPI_FUNC(PyObject*) _Py_Get_Getpath_CodeObject(void);
-
 
 /* --- Function used for testing ---------------------------------- */
 
+// Export these functions for '_testinternalcapi' shared extension
+PyAPI_FUNC(PyObject*) _PyConfig_AsDict(const PyConfig *config);
+PyAPI_FUNC(int) _PyConfig_FromDict(PyConfig *config, PyObject *dict);
+PyAPI_FUNC(PyObject*) _Py_Get_Getpath_CodeObject(void);
 PyAPI_FUNC(PyObject*) _Py_GetConfigsAsDict(void);
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_instruments.h b/Include/internal/pycore_instruments.h
index 9fb3952227af18..eae8371ef7f9b8 100644
--- a/Include/internal/pycore_instruments.h
+++ b/Include/internal/pycore_instruments.h
@@ -1,12 +1,11 @@
-
 #ifndef Py_INTERNAL_INSTRUMENT_H
 #define Py_INTERNAL_INSTRUMENT_H
 
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
 
-#include "pycore_bitutils.h"      // _Py_popcount32
-#include "pycore_frame.h"
-
-#include "cpython/code.h"
+#include "pycore_frame.h"         // _PyInterpreterFrame
 
 #ifdef __cplusplus
 extern "C" {
@@ -28,7 +27,8 @@ extern "C" {
 #define PY_MONITORING_EVENT_BRANCH 8
 #define PY_MONITORING_EVENT_STOP_ITERATION 9
 
-#define PY_MONITORING_INSTRUMENTED_EVENTS 10
+#define PY_MONITORING_IS_INSTRUMENTED_EVENT(ev) \
+    ((ev) < _PY_MONITORING_LOCAL_EVENTS)
 
 /* Other events, mainly exceptions */
 
@@ -36,12 +36,13 @@ extern "C" {
 #define PY_MONITORING_EVENT_EXCEPTION_HANDLED 11
 #define PY_MONITORING_EVENT_PY_UNWIND 12
 #define PY_MONITORING_EVENT_PY_THROW 13
+#define PY_MONITORING_EVENT_RERAISE 14
 
 
 /* Ancilliary events */
 
-#define PY_MONITORING_EVENT_C_RETURN 14
-#define PY_MONITORING_EVENT_C_RAISE 15
+#define PY_MONITORING_EVENT_C_RETURN 15
+#define PY_MONITORING_EVENT_C_RAISE 16
 
 
 typedef uint32_t _PyMonitoringEventSet;
@@ -62,6 +63,8 @@ typedef uint32_t _PyMonitoringEventSet;
 PyObject *_PyMonitoring_RegisterCallback(int tool_id, int event_id, PyObject *obj);
 
 int _PyMonitoring_SetEvents(int tool_id, _PyMonitoringEventSet events);
+int _PyMonitoring_SetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringEventSet events);
+int _PyMonitoring_GetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringEventSet *events);
 
 extern int
 _Py_call_instrumentation(PyThreadState *tstate, int event,
@@ -88,10 +91,6 @@ extern int
 _Py_call_instrumentation_2args(PyThreadState *tstate, int event,
     _PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg0, PyObject *arg1);
 
-extern void
-_Py_call_instrumentation_exc0(PyThreadState *tstate, int event,
-    _PyInterpreterFrame *frame, _Py_CODEUNIT *instr);
-
 extern void
 _Py_call_instrumentation_exc2(PyThreadState *tstate, int event,
     _PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg0, PyObject *arg1);
diff --git a/Include/internal/pycore_interp.h b/Include/internal/pycore_interp.h
index 527b2121148f4c..2a683196eeced3 100644
--- a/Include/internal/pycore_interp.h
+++ b/Include/internal/pycore_interp.h
@@ -8,29 +8,30 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include <stdbool.h>
+#include <stdbool.h>              // bool
 
 #include "pycore_ast_state.h"     // struct ast_state
 #include "pycore_atexit.h"        // struct atexit_state
-#include "pycore_atomic.h"        // _Py_atomic_address
 #include "pycore_ceval_state.h"   // struct _ceval_state
 #include "pycore_code.h"          // struct callable_cache
 #include "pycore_context.h"       // struct _Py_context_state
+#include "pycore_crossinterp.h"   // struct _xidregistry
 #include "pycore_dict_state.h"    // struct _Py_dict_state
 #include "pycore_dtoa.h"          // struct _dtoa_state
 #include "pycore_exceptions.h"    // struct _Py_exc_state
 #include "pycore_floatobject.h"   // struct _Py_float_state
 #include "pycore_function.h"      // FUNC_MAX_WATCHERS
-#include "pycore_genobject.h"     // struct _Py_async_gen_state
 #include "pycore_gc.h"            // struct _gc_runtime_state
-#include "pycore_global_objects.h"  // struct _Py_interp_static_objects
+#include "pycore_genobject.h"     // struct _Py_async_gen_state
+#include "pycore_global_objects.h"// struct _Py_interp_cached_objects
 #include "pycore_import.h"        // struct _import_state
-#include "pycore_instruments.h"   // PY_MONITORING_EVENTS
+#include "pycore_instruments.h"   // _PY_MONITORING_EVENTS
 #include "pycore_list.h"          // struct _Py_list_state
-#include "pycore_object_state.h"   // struct _py_object_state
-#include "pycore_obmalloc.h"      // struct obmalloc_state
+#include "pycore_object_state.h"  // struct _py_object_state
+#include "pycore_obmalloc.h"      // struct _obmalloc_state
+#include "pycore_tstate.h"        // _PyThreadStateImpl
 #include "pycore_tuple.h"         // struct _Py_tuple_state
-#include "pycore_typeobject.h"    // struct type_cache
+#include "pycore_typeobject.h"    // struct types_state
 #include "pycore_unicodeobject.h" // struct _Py_unicode_state
 #include "pycore_warnings.h"      // struct _warnings_runtime_state
 
@@ -39,6 +40,10 @@ struct _Py_long_state {
     int max_str_digits;
 };
 
+
+/* cross-interpreter data registry */
+
+
 /* interpreter state */
 
 /* PyInterpreterState holds the global state for one of the runtime's
@@ -48,15 +53,32 @@ struct _Py_long_state {
    */
 struct _is {
 
+    /* This struct countains the eval_breaker,
+     * which is by far the hottest field in this struct
+     * and should be placed at the beginning. */
+    struct _ceval_state ceval;
+
     PyInterpreterState *next;
 
-    uint64_t monitoring_version;
-    uint64_t last_restart_version;
+    int64_t id;
+    int64_t id_refcount;
+    int requires_idref;
+    PyThread_type_lock id_mutex;
+
+    /* Has been initialized to a safe state.
+
+       In order to be effective, this must be set to 0 during or right
+       after allocation. */
+    int _initialized;
+    int finalizing;
 
+    uintptr_t last_restart_version;
     struct pythreads {
         uint64_t next_unique_id;
         /* The linked list of threads, newest first. */
         PyThreadState *head;
+        /* The thread currently executing in the __main__ module, if any. */
+        PyThreadState *main;
         /* Used in Modules/_threadmodule.c. */
         long count;
         /* Support for runtime thread stack size tuning.
@@ -71,30 +93,45 @@ struct _is {
        Get runtime from tstate: tstate->interp->runtime. */
     struct pyruntimestate *runtime;
 
-    int64_t id;
-    int64_t id_refcount;
-    int requires_idref;
-    PyThread_type_lock id_mutex;
+    /* Set by Py_EndInterpreter().
 
-    /* Has been initialized to a safe state.
+       Use _PyInterpreterState_GetFinalizing()
+       and _PyInterpreterState_SetFinalizing()
+       to access it, don't access it directly. */
+    PyThreadState* _finalizing;
+    /* The ID of the OS thread in which we are finalizing. */
+    unsigned long _finalizing_id;
 
-       In order to be effective, this must be set to 0 during or right
-       after allocation. */
-    int _initialized;
-    int finalizing;
+    struct _gc_runtime_state gc;
 
-    struct _obmalloc_state obmalloc;
+    /* The following fields are here to avoid allocation during init.
+       The data is exposed through PyInterpreterState pointer fields.
+       These fields should not be accessed directly outside of init.
 
-    struct _ceval_state ceval;
-    struct _gc_runtime_state gc;
+       All other PyInterpreterState pointer fields are populated when
+       needed and default to NULL.
 
-    struct _import_state imports;
+       For now there are some exceptions to that rule, which require
+       allocation during init.  These will be addressed on a case-by-case
+       basis.  Also see _PyRuntimeState regarding the various mutex fields.
+       */
 
     // Dictionary of the sys module
     PyObject *sysdict;
+
     // Dictionary of the builtins module
     PyObject *builtins;
 
+    struct _import_state imports;
+
+    /* The per-interpreter GIL, which might not be used. */
+    struct _gil_runtime_state _gil;
+
+     /* ---------- IMPORTANT ---------------------------
+     The fields above this line are declared as early as
+     possible to facilitate out-of-process observability
+     tools. */
+
     PyObject *codec_search_path;
     PyObject *codec_search_cache;
     PyObject *codec_error_registry;
@@ -117,6 +154,9 @@ struct _is {
     Py_ssize_t co_extra_user_count;
     freefunc co_extra_freefuncs[MAX_CO_EXTRA_USERS];
 
+    /* cross-interpreter data and utils */
+    struct _xi_state xi;
+
 #ifdef HAVE_FORK
     PyObject *before_forkers;
     PyObject *after_forkers_parent;
@@ -126,6 +166,8 @@ struct _is {
     struct _warnings_runtime_state warnings;
     struct atexit_state atexit;
 
+    struct _obmalloc_state obmalloc;
+
     PyObject *audit_hooks;
     PyType_WatchCallback type_watchers[TYPE_MAX_WATCHERS];
     PyCode_WatchCallback code_watchers[CODE_MAX_WATCHERS];
@@ -152,37 +194,26 @@ struct _is {
     struct ast_state ast;
     struct types_state types;
     struct callable_cache callable_cache;
-    PyCodeObject *interpreter_trampoline;
+    _PyOptimizerObject *optimizer;
+    _PyExecutorObject *executor_list_head;
+    uint16_t optimizer_resume_threshold;
+    uint16_t optimizer_backedge_threshold;
+    uint32_t next_func_version;
 
-    _Py_Monitors monitors;
-    bool f_opcode_trace_set;
+    _Py_GlobalMonitors monitors;
     bool sys_profile_initialized;
     bool sys_trace_initialized;
     Py_ssize_t sys_profiling_threads; /* Count of threads with c_profilefunc set */
     Py_ssize_t sys_tracing_threads; /* Count of threads with c_tracefunc set */
-    PyObject *monitoring_callables[PY_MONITORING_TOOL_IDS][PY_MONITORING_EVENTS];
+    PyObject *monitoring_callables[PY_MONITORING_TOOL_IDS][_PY_MONITORING_EVENTS];
     PyObject *monitoring_tool_names[PY_MONITORING_TOOL_IDS];
 
     struct _Py_interp_cached_objects cached_objects;
     struct _Py_interp_static_objects static_objects;
 
-    /* The following fields are here to avoid allocation during init.
-       The data is exposed through PyInterpreterState pointer fields.
-       These fields should not be accessed directly outside of init.
-
-       All other PyInterpreterState pointer fields are populated when
-       needed and default to NULL.
-
-       For now there are some exceptions to that rule, which require
-       allocation during init.  These will be addressed on a case-by-case
-       basis.  Also see _PyRuntimeState regarding the various mutex fields.
-       */
-
-    /* The per-interpreter GIL, which might not be used. */
-    struct _gil_runtime_state _gil;
-
     /* the initial PyInterpreterState.threads.head */
-    PyThreadState _initial_thread;
+    _PyThreadStateImpl _initial_thread;
+    Py_ssize_t _interactive_src_count;
 };
 
 
@@ -191,26 +222,112 @@ struct _is {
 extern void _PyInterpreterState_Clear(PyThreadState *tstate);
 
 
-/* cross-interpreter data registry */
+static inline PyThreadState*
+_PyInterpreterState_GetFinalizing(PyInterpreterState *interp) {
+    return (PyThreadState*)_Py_atomic_load_ptr_relaxed(&interp->_finalizing);
+}
 
-/* For now we use a global registry of shareable classes.  An
-   alternative would be to add a tp_* slot for a class's
-   crossinterpdatafunc. It would be simpler and more efficient. */
+static inline unsigned long
+_PyInterpreterState_GetFinalizingID(PyInterpreterState *interp) {
+    return _Py_atomic_load_ulong_relaxed(&interp->_finalizing_id);
+}
 
-struct _xidregitem;
+static inline void
+_PyInterpreterState_SetFinalizing(PyInterpreterState *interp, PyThreadState *tstate) {
+    _Py_atomic_store_ptr_relaxed(&interp->_finalizing, tstate);
+    if (tstate == NULL) {
+        _Py_atomic_store_ulong_relaxed(&interp->_finalizing_id, 0);
+    }
+    else {
+        // XXX Re-enable this assert once gh-109860 is fixed.
+        //assert(tstate->thread_id == PyThread_get_thread_ident());
+        _Py_atomic_store_ulong_relaxed(&interp->_finalizing_id,
+                                       tstate->thread_id);
+    }
+}
 
-struct _xidregitem {
-    struct _xidregitem *prev;
-    struct _xidregitem *next;
-    PyObject *cls;  // weakref to a PyTypeObject
-    crossinterpdatafunc getdata;
-};
 
-PyAPI_FUNC(PyInterpreterState*) _PyInterpreterState_LookUpID(int64_t);
+// Export for the _xxinterpchannels module.
+PyAPI_FUNC(PyInterpreterState *) _PyInterpreterState_LookUpID(int64_t);
+
+extern int _PyInterpreterState_IDInitref(PyInterpreterState *);
+extern int _PyInterpreterState_IDIncref(PyInterpreterState *);
+extern void _PyInterpreterState_IDDecref(PyInterpreterState *);
+
+extern const PyConfig* _PyInterpreterState_GetConfig(PyInterpreterState *interp);
+
+// Get a copy of the current interpreter configuration.
+//
+// Return 0 on success. Raise an exception and return -1 on error.
+//
+// The caller must initialize 'config', using PyConfig_InitPythonConfig()
+// for example.
+//
+// Python must be preinitialized to call this method.
+// The caller must hold the GIL.
+//
+// Once done with the configuration, PyConfig_Clear() must be called to clear
+// it.
+//
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(int) _PyInterpreterState_GetConfigCopy(
+    struct PyConfig *config);
+
+// Set the configuration of the current interpreter.
+//
+// This function should be called during or just after the Python
+// initialization.
+//
+// Update the sys module with the new configuration. If the sys module was
+// modified directly after the Python initialization, these changes are lost.
+//
+// Some configuration like faulthandler or warnoptions can be updated in the
+// configuration, but don't reconfigure Python (don't enable/disable
+// faulthandler and don't reconfigure warnings filters).
+//
+// Return 0 on success. Raise an exception and return -1 on error.
+//
+// The configuration should come from _PyInterpreterState_GetConfigCopy().
+//
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(int) _PyInterpreterState_SetConfig(
+    const struct PyConfig *config);
+
+
+/*
+Runtime Feature Flags
+
+Each flag indicate whether or not a specific runtime feature
+is available in a given context.  For example, forking the process
+might not be allowed in the current interpreter (i.e. os.fork() would fail).
+*/
+
+/* Set if the interpreter share obmalloc runtime state
+   with the main interpreter. */
+#define Py_RTFLAGS_USE_MAIN_OBMALLOC (1UL << 5)
+
+/* Set if import should check a module for subinterpreter support. */
+#define Py_RTFLAGS_MULTI_INTERP_EXTENSIONS (1UL << 8)
+
+/* Set if threads are allowed. */
+#define Py_RTFLAGS_THREADS (1UL << 10)
+
+/* Set if daemon threads are allowed. */
+#define Py_RTFLAGS_DAEMON_THREADS (1UL << 11)
+
+/* Set if os.fork() is allowed. */
+#define Py_RTFLAGS_FORK (1UL << 15)
+
+/* Set if os.exec*() is allowed. */
+#define Py_RTFLAGS_EXEC (1UL << 16)
+
+extern int _PyInterpreterState_HasFeature(PyInterpreterState *interp,
+                                          unsigned long feature);
+
+PyAPI_FUNC(PyStatus) _PyInterpreterState_New(
+    PyThreadState *tstate,
+    PyInterpreterState **pinterp);
 
-PyAPI_FUNC(int) _PyInterpreterState_IDInitref(PyInterpreterState *);
-PyAPI_FUNC(int) _PyInterpreterState_IDIncref(PyInterpreterState *);
-PyAPI_FUNC(void) _PyInterpreterState_IDDecref(PyInterpreterState *);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_interpreteridobject.h b/Include/internal/pycore_interpreteridobject.h
deleted file mode 100644
index 804831e76deaea..00000000000000
--- a/Include/internal/pycore_interpreteridobject.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Interpreter ID Object */
-
-#ifndef Py_INTERNAL_INTERPRETERIDOBJECT_H
-#define Py_INTERNAL_INTERPRETERIDOBJECT_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef Py_BUILD_CORE
-#  error "this header requires Py_BUILD_CORE define"
-#endif
-
-PyAPI_DATA(PyTypeObject) _PyInterpreterID_Type;
-
-PyAPI_FUNC(PyObject *) _PyInterpreterID_New(int64_t);
-PyAPI_FUNC(PyObject *) _PyInterpreterState_GetIDObject(PyInterpreterState *);
-PyAPI_FUNC(PyInterpreterState *) _PyInterpreterID_LookUp(PyObject *);
-
-#ifdef __cplusplus
-}
-#endif
-#endif  // !Py_INTERNAL_INTERPRETERIDOBJECT_H
diff --git a/Include/internal/pycore_intrinsics.h b/Include/internal/pycore_intrinsics.h
index 3902059a04b9da..3a8dd95cff8e5d 100644
--- a/Include/internal/pycore_intrinsics.h
+++ b/Include/internal/pycore_intrinsics.h
@@ -1,4 +1,9 @@
-// Auto-generated by Tools/build/generate_opcode_h.py from Lib/opcode.py
+#ifndef Py_INTERNAL_INTRINSIC_H
+#define Py_INTERNAL_INTRINSIC_H
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
 
 /* Unary Functions: */
 #define INTRINSIC_1_INVALID                      0
@@ -8,17 +13,38 @@
 #define INTRINSIC_ASYNC_GEN_WRAP                 4
 #define INTRINSIC_UNARY_POSITIVE                 5
 #define INTRINSIC_LIST_TO_TUPLE                  6
+#define INTRINSIC_TYPEVAR                        7
+#define INTRINSIC_PARAMSPEC                      8
+#define INTRINSIC_TYPEVARTUPLE                   9
+#define INTRINSIC_SUBSCRIPT_GENERIC             10
+#define INTRINSIC_TYPEALIAS                     11
 
-#define MAX_INTRINSIC_1                          6
+#define MAX_INTRINSIC_1                         11
 
 
 /* Binary Functions: */
 #define INTRINSIC_2_INVALID                      0
 #define INTRINSIC_PREP_RERAISE_STAR              1
+#define INTRINSIC_TYPEVAR_WITH_BOUND             2
+#define INTRINSIC_TYPEVAR_WITH_CONSTRAINTS       3
+#define INTRINSIC_SET_FUNCTION_TYPE_PARAMS       4
+
+#define MAX_INTRINSIC_2                          4
+
+typedef PyObject *(*intrinsic_func1)(PyThreadState* tstate, PyObject *value);
+typedef PyObject *(*intrinsic_func2)(PyThreadState* tstate, PyObject *value1, PyObject *value2);
+
+typedef struct {
+    intrinsic_func1 func;
+    const char *name;
+} intrinsic_func1_info;
+
+typedef struct {
+    intrinsic_func2 func;
+    const char *name;
+} intrinsic_func2_info;
 
-#define MAX_INTRINSIC_2                          1
+extern const intrinsic_func1_info _PyIntrinsics_UnaryFunctions[];
+extern const intrinsic_func2_info _PyIntrinsics_BinaryFunctions[];
 
-typedef PyObject *(*instrinsic_func1)(PyThreadState* tstate, PyObject *value);
-typedef PyObject *(*instrinsic_func2)(PyThreadState* tstate, PyObject *value1, PyObject *value2);
-extern const instrinsic_func1 _PyIntrinsics_UnaryFunctions[];
-extern const instrinsic_func2 _PyIntrinsics_BinaryFunctions[];
+#endif  // !Py_INTERNAL_INTRINSIC_H
diff --git a/Include/internal/pycore_list.h b/Include/internal/pycore_list.h
index 2fcbe12cd6559e..55d67b32bc8a63 100644
--- a/Include/internal/pycore_list.h
+++ b/Include/internal/pycore_list.h
@@ -8,7 +8,9 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "listobject.h"           // _PyList_CAST()
+
+extern PyObject* _PyList_Extend(PyListObject *, PyObject *);
+extern void _PyList_DebugMallocStats(FILE *out);
 
 
 /* runtime lifecycle */
diff --git a/Include/internal/pycore_llist.h b/Include/internal/pycore_llist.h
new file mode 100644
index 00000000000000..5fd261da05fa5d
--- /dev/null
+++ b/Include/internal/pycore_llist.h
@@ -0,0 +1,107 @@
+// A doubly-linked list that can be embedded in a struct.
+//
+// Usage:
+//  struct llist_node head = LLIST_INIT(head);
+//  typedef struct {
+//      ...
+//      struct llist_node node;
+//      ...
+//  } MyObj;
+//
+//  llist_insert_tail(&head, &obj->node);
+//  llist_remove(&obj->node);
+//
+//  struct llist_node *node;
+//  llist_for_each(node, &head) {
+//      MyObj *obj = llist_data(node, MyObj, node);
+//      ...
+//  }
+//
+
+#ifndef Py_INTERNAL_LLIST_H
+#define Py_INTERNAL_LLIST_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "Py_BUILD_CORE must be defined to include this header"
+#endif
+
+struct llist_node {
+    struct llist_node *next;
+    struct llist_node *prev;
+};
+
+// Get the struct containing a node.
+#define llist_data(node, type, member) \
+    (type*)((char*)node - offsetof(type, member))
+
+// Iterate over a list.
+#define llist_for_each(node, head) \
+    for (node = (head)->next; node != (head); node = node->next)
+
+// Iterate over a list, but allow removal of the current node.
+#define llist_for_each_safe(node, head) \
+    for (struct llist_node *_next = (node = (head)->next, node->next); \
+         node != (head); node = _next, _next = node->next)
+
+#define LLIST_INIT(head) { &head, &head }
+
+static inline void
+llist_init(struct llist_node *head)
+{
+    head->next = head;
+    head->prev = head;
+}
+
+// Returns 1 if the list is empty, 0 otherwise.
+static inline int
+llist_empty(struct llist_node *head)
+{
+    return head->next == head;
+}
+
+// Appends to the tail of the list.
+static inline void
+llist_insert_tail(struct llist_node *head, struct llist_node *node)
+{
+    node->prev = head->prev;
+    node->next = head;
+    head->prev->next = node;
+    head->prev = node;
+}
+
+// Remove a node from the list.
+static inline void
+llist_remove(struct llist_node *node)
+{
+    struct llist_node *prev = node->prev;
+    struct llist_node *next = node->next;
+    prev->next = next;
+    next->prev = prev;
+    node->prev = NULL;
+    node->next = NULL;
+}
+
+// Append all nodes from head2 onto head1. head2 is left empty.
+static inline void
+llist_concat(struct llist_node *head1, struct llist_node *head2)
+{
+    if (!llist_empty(head2)) {
+        head1->prev->next = head2->next;
+        head2->next->prev = head1->prev;
+
+        head1->prev = head2->prev;
+        head2->prev->next = head1;
+        llist_init(head2);
+    }
+}
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_LLIST_H */
diff --git a/Include/internal/pycore_lock.h b/Include/internal/pycore_lock.h
new file mode 100644
index 00000000000000..03ad1c9fd584b5
--- /dev/null
+++ b/Include/internal/pycore_lock.h
@@ -0,0 +1,219 @@
+// Lightweight locks and other synchronization mechanisms.
+//
+// These implementations are based on WebKit's WTF::Lock. See
+// https://webkit.org/blog/6161/locking-in-webkit/ for a description of the
+// design.
+#ifndef Py_INTERNAL_LOCK_H
+#define Py_INTERNAL_LOCK_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_time.h"          // _PyTime_t
+
+
+// A mutex that occupies one byte. The lock can be zero initialized.
+//
+// Only the two least significant bits are used. The remaining bits should be
+// zero:
+// 0b00: unlocked
+// 0b01: locked
+// 0b10: unlocked and has parked threads
+// 0b11: locked and has parked threads
+//
+// Typical initialization:
+//   PyMutex m = (PyMutex){0};
+//
+// Typical usage:
+//   PyMutex_Lock(&m);
+//   ...
+//   PyMutex_Unlock(&m);
+
+// NOTE: In Py_GIL_DISABLED builds, `struct _PyMutex` is defined in Include/object.h.
+// The Py_GIL_DISABLED builds need the definition in Include/object.h for the
+// `ob_mutex` field in PyObject. For the default (non-free-threaded) build,
+// we define the struct here to avoid exposing it in the public API.
+#ifndef Py_GIL_DISABLED
+struct _PyMutex { uint8_t v; };
+#endif
+
+typedef struct _PyMutex PyMutex;
+
+#define _Py_UNLOCKED    0
+#define _Py_LOCKED      1
+#define _Py_HAS_PARKED  2
+#define _Py_ONCE_INITIALIZED 4
+
+// (private) slow path for locking the mutex
+PyAPI_FUNC(void) _PyMutex_LockSlow(PyMutex *m);
+
+// (private) slow path for unlocking the mutex
+PyAPI_FUNC(void) _PyMutex_UnlockSlow(PyMutex *m);
+
+static inline int
+PyMutex_LockFast(uint8_t *lock_bits)
+{
+    uint8_t expected = _Py_UNLOCKED;
+    return _Py_atomic_compare_exchange_uint8(lock_bits, &expected, _Py_LOCKED);
+}
+
+// Locks the mutex.
+//
+// If the mutex is currently locked, the calling thread will be parked until
+// the mutex is unlocked. If the current thread holds the GIL, then the GIL
+// will be released while the thread is parked.
+static inline void
+PyMutex_Lock(PyMutex *m)
+{
+    uint8_t expected = _Py_UNLOCKED;
+    if (!_Py_atomic_compare_exchange_uint8(&m->v, &expected, _Py_LOCKED)) {
+        _PyMutex_LockSlow(m);
+    }
+}
+
+// Unlocks the mutex.
+static inline void
+PyMutex_Unlock(PyMutex *m)
+{
+    uint8_t expected = _Py_LOCKED;
+    if (!_Py_atomic_compare_exchange_uint8(&m->v, &expected, _Py_UNLOCKED)) {
+        _PyMutex_UnlockSlow(m);
+    }
+}
+
+// Checks if the mutex is currently locked.
+static inline int
+PyMutex_IsLocked(PyMutex *m)
+{
+    return (_Py_atomic_load_uint8(&m->v) & _Py_LOCKED) != 0;
+}
+
+// Re-initializes the mutex after a fork to the unlocked state.
+static inline void
+_PyMutex_at_fork_reinit(PyMutex *m)
+{
+    memset(m, 0, sizeof(*m));
+}
+
+typedef enum _PyLockFlags {
+    // Do not detach/release the GIL when waiting on the lock.
+    _Py_LOCK_DONT_DETACH = 0,
+
+    // Detach/release the GIL while waiting on the lock.
+    _PY_LOCK_DETACH = 1,
+
+    // Handle signals if interrupted while waiting on the lock.
+    _PY_LOCK_HANDLE_SIGNALS = 2,
+} _PyLockFlags;
+
+// Lock a mutex with an optional timeout and additional options. See
+// _PyLockFlags for details.
+extern PyLockStatus
+_PyMutex_LockTimed(PyMutex *m, _PyTime_t timeout_ns, _PyLockFlags flags);
+
+// Lock a mutex with aditional options. See _PyLockFlags for details.
+static inline void
+PyMutex_LockFlags(PyMutex *m, _PyLockFlags flags)
+{
+    uint8_t expected = _Py_UNLOCKED;
+    if (!_Py_atomic_compare_exchange_uint8(&m->v, &expected, _Py_LOCKED)) {
+        _PyMutex_LockTimed(m, -1, flags);
+    }
+}
+
+// Unlock a mutex, returns 0 if the mutex is not locked (used for improved
+// error messages).
+extern int _PyMutex_TryUnlock(PyMutex *m);
+
+
+// PyEvent is a one-time event notification
+typedef struct {
+    uint8_t v;
+} PyEvent;
+
+// Set the event and notify any waiting threads.
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(void) _PyEvent_Notify(PyEvent *evt);
+
+// Wait for the event to be set. If the event is already set, then this returns
+// immediately.
+PyAPI_FUNC(void) PyEvent_Wait(PyEvent *evt);
+
+// Wait for the event to be set, or until the timeout expires. If the event is
+// already set, then this returns immediately. Returns 1 if the event was set,
+// and 0 if the timeout expired or thread was interrupted.
+PyAPI_FUNC(int) PyEvent_WaitTimed(PyEvent *evt, _PyTime_t timeout_ns);
+
+
+// _PyRawMutex implements a word-sized mutex that that does not depend on the
+// parking lot API, and therefore can be used in the parking lot
+// implementation.
+//
+// The mutex uses a packed representation: the least significant bit is used to
+// indicate whether the mutex is locked or not. The remaining bits are either
+// zero or a pointer to a `struct raw_mutex_entry` (see lock.c).
+typedef struct {
+    uintptr_t v;
+} _PyRawMutex;
+
+// Slow paths for lock/unlock
+extern void _PyRawMutex_LockSlow(_PyRawMutex *m);
+extern void _PyRawMutex_UnlockSlow(_PyRawMutex *m);
+
+static inline void
+_PyRawMutex_Lock(_PyRawMutex *m)
+{
+    uintptr_t unlocked = _Py_UNLOCKED;
+    if (_Py_atomic_compare_exchange_uintptr(&m->v, &unlocked, _Py_LOCKED)) {
+        return;
+    }
+    _PyRawMutex_LockSlow(m);
+}
+
+static inline void
+_PyRawMutex_Unlock(_PyRawMutex *m)
+{
+    uintptr_t locked = _Py_LOCKED;
+    if (_Py_atomic_compare_exchange_uintptr(&m->v, &locked, _Py_UNLOCKED)) {
+        return;
+    }
+    _PyRawMutex_UnlockSlow(m);
+}
+
+// A data structure that can be used to run initialization code once in a
+// thread-safe manner. The C++11 equivalent is std::call_once.
+typedef struct {
+    uint8_t v;
+} _PyOnceFlag;
+
+// Type signature for one-time initialization functions. The function should
+// return 0 on success and -1 on failure.
+typedef int _Py_once_fn_t(void *arg);
+
+// (private) slow path for one time initialization
+PyAPI_FUNC(int)
+_PyOnceFlag_CallOnceSlow(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg);
+
+// Calls `fn` once using `flag`. The `arg` is passed to the call to `fn`.
+//
+// Returns 0 on success and -1 on failure.
+//
+// If `fn` returns 0 (success), then subsequent calls immediately return 0.
+// If `fn` returns -1 (failure), then subsequent calls will retry the call.
+static inline int
+_PyOnceFlag_CallOnce(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg)
+{
+    if (_Py_atomic_load_uint8(&flag->v) == _Py_ONCE_INITIALIZED) {
+        return 0;
+    }
+    return _PyOnceFlag_CallOnceSlow(flag, fn, arg);
+}
+
+#ifdef __cplusplus
+}
+#endif
+#endif   /* !Py_INTERNAL_LOCK_H */
diff --git a/Include/internal/pycore_long.h b/Include/internal/pycore_long.h
index fe86581e81f6b5..ec27df9e416c58 100644
--- a/Include/internal/pycore_long.h
+++ b/Include/internal/pycore_long.h
@@ -8,7 +8,8 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_global_objects.h"  // _PY_NSMALLNEGINTS
+#include "pycore_bytesobject.h"   // _PyBytesWriter
+#include "pycore_global_objects.h"// _PY_NSMALLNEGINTS
 #include "pycore_runtime.h"       // _PyRuntime
 
 /*
@@ -46,6 +47,16 @@ extern "C" {
 # error "_PY_LONG_DEFAULT_MAX_STR_DIGITS smaller than threshold."
 #endif
 
+// _PyLong_NumBits.  Return the number of bits needed to represent the
+// absolute value of a long.  For example, this returns 1 for 1 and -1, 2
+// for 2 and -2, and 2 for 3 and -3.  It returns 0 for 0.
+// v must not be NULL, and must be a normalized long.
+// (size_t)-1 is returned and OverflowError set if the true result doesn't
+// fit in a size_t.
+//
+// Export for 'math' shared extension.
+PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
+
 
 /* runtime lifecycle */
 
@@ -63,51 +74,99 @@ extern void _PyLong_FiniTypes(PyInterpreterState *interp);
 #  error "_PY_NSMALLPOSINTS must be greater than or equal to 257"
 #endif
 
-// Return a borrowed reference to the zero singleton.
+// Return a reference to the immortal zero singleton.
 // The function cannot return NULL.
 static inline PyObject* _PyLong_GetZero(void)
 { return (PyObject *)&_PyLong_SMALL_INTS[_PY_NSMALLNEGINTS]; }
 
-// Return a borrowed reference to the one singleton.
+// Return a reference to the immortal one singleton.
 // The function cannot return NULL.
 static inline PyObject* _PyLong_GetOne(void)
 { return (PyObject *)&_PyLong_SMALL_INTS[_PY_NSMALLNEGINTS+1]; }
 
 static inline PyObject* _PyLong_FromUnsignedChar(unsigned char i)
 {
-    return Py_NewRef((PyObject *)&_PyLong_SMALL_INTS[_PY_NSMALLNEGINTS+i]);
+    return (PyObject *)&_PyLong_SMALL_INTS[_PY_NSMALLNEGINTS+i];
 }
 
-PyObject *_PyLong_Add(PyLongObject *left, PyLongObject *right);
-PyObject *_PyLong_Multiply(PyLongObject *left, PyLongObject *right);
-PyObject *_PyLong_Subtract(PyLongObject *left, PyLongObject *right);
-
-/* Used by Python/mystrtoul.c, _PyBytes_FromHex(),
-   _PyBytes_DecodeEscape(), etc. */
+// _PyLong_Frexp returns a double x and an exponent e such that the
+// true value is approximately equal to x * 2**e.  e is >= 0.  x is
+// 0.0 if and only if the input is 0 (in which case, e and x are both
+// zeroes); otherwise, 0.5 <= abs(x) < 1.0.  On overflow, which is
+// possible if the number of bits doesn't fit into a Py_ssize_t, sets
+// OverflowError and returns -1.0 for x, 0 for e.
+//
+// Export for 'math' shared extension
+PyAPI_DATA(double) _PyLong_Frexp(PyLongObject *a, Py_ssize_t *e);
+
+extern PyObject* _PyLong_FromBytes(const char *, Py_ssize_t, int);
+
+// _PyLong_DivmodNear.  Given integers a and b, compute the nearest
+// integer q to the exact quotient a / b, rounding to the nearest even integer
+// in the case of a tie.  Return (q, r), where r = a - q*b.  The remainder r
+// will satisfy abs(r) <= abs(b)/2, with equality possible only if q is
+// even.
+//
+// Export for '_datetime' shared extension.
+PyAPI_DATA(PyObject*) _PyLong_DivmodNear(PyObject *, PyObject *);
+
+// _PyLong_Format: Convert the long to a string object with given base,
+// appending a base prefix of 0[box] if base is 2, 8 or 16.
+// Export for '_tkinter' shared extension.
+PyAPI_DATA(PyObject*) _PyLong_Format(PyObject *obj, int base);
+
+// Export for 'math' shared extension
+PyAPI_DATA(PyObject*) _PyLong_Rshift(PyObject *, size_t);
+
+// Export for 'math' shared extension
+PyAPI_DATA(PyObject*) _PyLong_Lshift(PyObject *, size_t);
+
+extern PyObject* _PyLong_Add(PyLongObject *left, PyLongObject *right);
+extern PyObject* _PyLong_Multiply(PyLongObject *left, PyLongObject *right);
+extern PyObject* _PyLong_Subtract(PyLongObject *left, PyLongObject *right);
+
+// Export for 'binascii' shared extension.
 PyAPI_DATA(unsigned char) _PyLong_DigitValue[256];
 
 /* Format the object based on the format_spec, as defined in PEP 3101
    (Advanced String Formatting). */
-PyAPI_FUNC(int) _PyLong_FormatAdvancedWriter(
+extern int _PyLong_FormatAdvancedWriter(
     _PyUnicodeWriter *writer,
     PyObject *obj,
     PyObject *format_spec,
     Py_ssize_t start,
     Py_ssize_t end);
 
-PyAPI_FUNC(int) _PyLong_FormatWriter(
+extern int _PyLong_FormatWriter(
     _PyUnicodeWriter *writer,
     PyObject *obj,
     int base,
     int alternate);
 
-PyAPI_FUNC(char*) _PyLong_FormatBytesWriter(
+extern char* _PyLong_FormatBytesWriter(
     _PyBytesWriter *writer,
     char *str,
     PyObject *obj,
     int base,
     int alternate);
 
+// Argument converters used by Argument Clinic
+
+// Export for 'select' shared extension (Argument Clinic code)
+PyAPI_FUNC(int) _PyLong_UnsignedShort_Converter(PyObject *, void *);
+
+// Export for '_testclinic' shared extension (Argument Clinic code)
+PyAPI_FUNC(int) _PyLong_UnsignedInt_Converter(PyObject *, void *);
+
+// Export for '_blake2' shared extension (Argument Clinic code)
+PyAPI_FUNC(int) _PyLong_UnsignedLong_Converter(PyObject *, void *);
+
+// Export for '_blake2' shared extension (Argument Clinic code)
+PyAPI_FUNC(int) _PyLong_UnsignedLongLong_Converter(PyObject *, void *);
+
+// Export for '_testclinic' shared extension (Argument Clinic code)
+PyAPI_FUNC(int) _PyLong_Size_t_Converter(PyObject *, void *);
+
 /* Long value tag bits:
  * 0-1: Sign bits value = (1-sign), ie. negative=2, positive=0, zero=1.
  * 2: Reserved for immortality bit
@@ -118,6 +177,21 @@ PyAPI_FUNC(char*) _PyLong_FormatBytesWriter(
 #define SIGN_NEGATIVE 2
 #define NON_SIZE_BITS 3
 
+/* The functions _PyLong_IsCompact and _PyLong_CompactValue are defined
+ * in Include/cpython/longobject.h, since they need to be inline.
+ *
+ * "Compact" values have at least one bit to spare,
+ * so that addition and subtraction can be performed on the values
+ * without risk of overflow.
+ *
+ * The inline functions need tag bits.
+ * For readability, rather than do `#define SIGN_MASK _PyLong_SIGN_MASK`
+ * we define them to the numbers in both places and then assert that
+ * they're the same.
+ */
+static_assert(SIGN_MASK == _PyLong_SIGN_MASK, "SIGN_MASK does not match _PyLong_SIGN_MASK");
+static_assert(NON_SIZE_BITS == _PyLong_NON_SIZE_BITS, "NON_SIZE_BITS does not match _PyLong_NON_SIZE_BITS");
+
 /* All *compact" values are guaranteed to fit into
  * a Py_ssize_t with at least one bit to spare.
  * In other words, for 64 bit machines, compact
@@ -131,11 +205,6 @@ _PyLong_IsNonNegativeCompact(const PyLongObject* op) {
     return op->long_value.lv_tag <= (1 << NON_SIZE_BITS);
 }
 
-static inline int
-_PyLong_IsCompact(const PyLongObject* op) {
-    assert(PyLong_Check(op));
-    return op->long_value.lv_tag < (2 << NON_SIZE_BITS);
-}
 
 static inline int
 _PyLong_BothAreCompact(const PyLongObject* a, const PyLongObject* b) {
@@ -144,21 +213,6 @@ _PyLong_BothAreCompact(const PyLongObject* a, const PyLongObject* b) {
     return (a->long_value.lv_tag | b->long_value.lv_tag) < (2 << NON_SIZE_BITS);
 }
 
-/* Returns a *compact* value, iff `_PyLong_IsCompact` is true for `op`.
- *
- * "Compact" values have at least one bit to spare,
- * so that addition and subtraction can be performed on the values
- * without risk of overflow.
- */
-static inline Py_ssize_t
-_PyLong_CompactValue(const PyLongObject *op)
-{
-    assert(PyLong_Check(op));
-    assert(_PyLong_IsCompact(op));
-    Py_ssize_t sign = 1 - (op->long_value.lv_tag & SIGN_MASK);
-    return sign * (Py_ssize_t)op->long_value.ob_digit[0];
-}
-
 static inline bool
 _PyLong_IsZero(const PyLongObject *op)
 {
@@ -245,7 +299,7 @@ _PyLong_FlipSign(PyLongObject *op) {
 
 #define _PyLong_DIGIT_INIT(val) \
     { \
-        .ob_base = _PyObject_HEAD_INIT(&PyLong_Type) \
+        .ob_base = _PyObject_HEAD_INIT(&PyLong_Type), \
         .long_value  = { \
             .lv_tag = TAG_FROM_SIGN_AND_SIZE( \
                 (val) == 0 ? 0 : ((val) < 0 ? -1 : 1), \
diff --git a/Include/internal/pycore_memoryobject.h b/Include/internal/pycore_memoryobject.h
index fe19e3f9611a16..62e204fcbf6533 100644
--- a/Include/internal/pycore_memoryobject.h
+++ b/Include/internal/pycore_memoryobject.h
@@ -8,6 +8,8 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+extern PyTypeObject _PyManagedBuffer_Type;
+
 PyObject *
 _PyMemoryView_FromBufferProc(PyObject *v, int flags,
                              getbufferproc bufferproc);
diff --git a/Include/internal/pycore_mimalloc.h b/Include/internal/pycore_mimalloc.h
new file mode 100644
index 00000000000000..c29dc82a42762a
--- /dev/null
+++ b/Include/internal/pycore_mimalloc.h
@@ -0,0 +1,19 @@
+#ifndef Py_INTERNAL_MIMALLOC_H
+#define Py_INTERNAL_MIMALLOC_H
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#if defined(MIMALLOC_H) || defined(MIMALLOC_TYPES_H)
+#  error "pycore_mimalloc.h must be included before mimalloc.h"
+#endif
+
+#include "pycore_pymem.h"
+#define MI_DEBUG_UNINIT     PYMEM_CLEANBYTE
+#define MI_DEBUG_FREED      PYMEM_DEADBYTE
+#define MI_DEBUG_PADDING    PYMEM_FORBIDDENBYTE
+
+#include "mimalloc.h"
+
+#endif // Py_INTERNAL_MIMALLOC_H
diff --git a/Include/internal/pycore_modsupport.h b/Include/internal/pycore_modsupport.h
new file mode 100644
index 00000000000000..3d3cd6722528e9
--- /dev/null
+++ b/Include/internal/pycore_modsupport.h
@@ -0,0 +1,125 @@
+#ifndef Py_INTERNAL_MODSUPPORT_H
+#define Py_INTERNAL_MODSUPPORT_H
+
+#include "pycore_lock.h"    // _PyOnceFlag
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+
+extern int _PyArg_NoKwnames(const char *funcname, PyObject *kwnames);
+#define _PyArg_NoKwnames(funcname, kwnames) \
+    ((kwnames) == NULL || _PyArg_NoKwnames((funcname), (kwnames)))
+
+// Export for '_bz2' shared extension
+PyAPI_FUNC(int) _PyArg_NoPositional(const char *funcname, PyObject *args);
+#define _PyArg_NoPositional(funcname, args) \
+    ((args) == NULL || _PyArg_NoPositional((funcname), (args)))
+
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyArg_NoKeywords(const char *funcname, PyObject *kwargs);
+#define _PyArg_NoKeywords(funcname, kwargs) \
+    ((kwargs) == NULL || _PyArg_NoKeywords((funcname), (kwargs)))
+
+// Export for 'zlib' shared extension
+PyAPI_FUNC(int) _PyArg_CheckPositional(const char *, Py_ssize_t,
+                                       Py_ssize_t, Py_ssize_t);
+#define _Py_ANY_VARARGS(n) ((n) == PY_SSIZE_T_MAX)
+#define _PyArg_CheckPositional(funcname, nargs, min, max) \
+    ((!_Py_ANY_VARARGS(max) && (min) <= (nargs) && (nargs) <= (max)) \
+     || _PyArg_CheckPositional((funcname), (nargs), (min), (max)))
+
+extern PyObject ** _Py_VaBuildStack(
+    PyObject **small_stack,
+    Py_ssize_t small_stack_len,
+    const char *format,
+    va_list va,
+    Py_ssize_t *p_nargs);
+
+extern PyObject* _PyModule_CreateInitialized(PyModuleDef*, int apiver);
+
+// Export for '_curses' shared extension
+PyAPI_FUNC(int) _PyArg_ParseStack(
+    PyObject *const *args,
+    Py_ssize_t nargs,
+    const char *format,
+    ...);
+
+extern int _PyArg_UnpackStack(
+    PyObject *const *args,
+    Py_ssize_t nargs,
+    const char *name,
+    Py_ssize_t min,
+    Py_ssize_t max,
+    ...);
+
+// Export for '_heapq' shared extension
+PyAPI_FUNC(void) _PyArg_BadArgument(
+    const char *fname,
+    const char *displayname,
+    const char *expected,
+    PyObject *arg);
+
+// --- _PyArg_Parser API ---------------------------------------------------
+
+typedef struct _PyArg_Parser {
+    const char *format;
+    const char * const *keywords;
+    const char *fname;
+    const char *custom_msg;
+    _PyOnceFlag once;       /* atomic one-time initialization flag */
+    int is_kwtuple_owned;   /* does this parser own the kwtuple object? */
+    int pos;                /* number of positional-only arguments */
+    int min;                /* minimal number of arguments */
+    int max;                /* maximal number of positional arguments */
+    PyObject *kwtuple;      /* tuple of keyword parameter names */
+    struct _PyArg_Parser *next;
+} _PyArg_Parser;
+
+// Export for '_testclinic' shared extension
+PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywordsFast(PyObject *, PyObject *,
+                                                 struct _PyArg_Parser *, ...);
+
+// Export for '_dbm' shared extension
+PyAPI_FUNC(int) _PyArg_ParseStackAndKeywords(
+    PyObject *const *args,
+    Py_ssize_t nargs,
+    PyObject *kwnames,
+    struct _PyArg_Parser *,
+    ...);
+
+// Export for 'math' shared extension
+PyAPI_FUNC(PyObject * const *) _PyArg_UnpackKeywords(
+    PyObject *const *args,
+    Py_ssize_t nargs,
+    PyObject *kwargs,
+    PyObject *kwnames,
+    struct _PyArg_Parser *parser,
+    int minpos,
+    int maxpos,
+    int minkw,
+    PyObject **buf);
+#define _PyArg_UnpackKeywords(args, nargs, kwargs, kwnames, parser, minpos, maxpos, minkw, buf) \
+    (((minkw) == 0 && (kwargs) == NULL && (kwnames) == NULL && \
+      (minpos) <= (nargs) && (nargs) <= (maxpos) && (args) != NULL) ? (args) : \
+     _PyArg_UnpackKeywords((args), (nargs), (kwargs), (kwnames), (parser), \
+                           (minpos), (maxpos), (minkw), (buf)))
+
+// Export for '_testclinic' shared extension
+PyAPI_FUNC(PyObject * const *) _PyArg_UnpackKeywordsWithVararg(
+        PyObject *const *args, Py_ssize_t nargs,
+        PyObject *kwargs, PyObject *kwnames,
+        struct _PyArg_Parser *parser,
+        int minpos, int maxpos, int minkw,
+        int vararg, PyObject **buf);
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_MODSUPPORT_H
+
diff --git a/Include/internal/pycore_moduleobject.h b/Include/internal/pycore_moduleobject.h
index 15a1bcb6ae5163..5644bbe5e0552b 100644
--- a/Include/internal/pycore_moduleobject.h
+++ b/Include/internal/pycore_moduleobject.h
@@ -8,6 +8,12 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+extern void _PyModule_Clear(PyObject *);
+extern void _PyModule_ClearDict(PyObject *);
+extern int _PyModuleSpec_IsInitializing(PyObject *);
+
+extern int _PyModule_IsExtension(PyObject *obj);
+
 typedef struct {
     PyObject_HEAD
     PyObject *md_dict;
@@ -33,7 +39,7 @@ static inline PyObject* _PyModule_GetDict(PyObject *mod) {
     PyObject *dict = ((PyModuleObject *)mod) -> md_dict;
     // _PyModule_GetDict(mod) must not be used after calling module_clear(mod)
     assert(dict != NULL);
-    return dict;
+    return dict;  // borrowed reference
 }
 
 PyObject* _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress);
diff --git a/Include/internal/pycore_namespace.h b/Include/internal/pycore_namespace.h
index cb76f040693d10..f165cf15319a59 100644
--- a/Include/internal/pycore_namespace.h
+++ b/Include/internal/pycore_namespace.h
@@ -10,9 +10,10 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-PyAPI_DATA(PyTypeObject) _PyNamespace_Type;
+extern PyTypeObject _PyNamespace_Type;
 
-PyAPI_FUNC(PyObject *) _PyNamespace_New(PyObject *kwds);
+// Export for '_testmultiphase' shared extension
+PyAPI_FUNC(PyObject*) _PyNamespace_New(PyObject *kwds);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_object.h b/Include/internal/pycore_object.h
index 500b3eece68055..f413b8451e5ab4 100644
--- a/Include/internal/pycore_object.h
+++ b/Include/internal/pycore_object.h
@@ -10,9 +10,41 @@ extern "C" {
 
 #include <stdbool.h>
 #include "pycore_gc.h"            // _PyObject_GC_IS_TRACKED()
+#include "pycore_emscripten_trampoline.h" // _PyCFunction_TrampolineCall()
 #include "pycore_interp.h"        // PyInterpreterState.gc
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
-#include "pycore_runtime.h"       // _PyRuntime
+
+/* Check if an object is consistent. For example, ensure that the reference
+   counter is greater than or equal to 1, and ensure that ob_type is not NULL.
+
+   Call _PyObject_AssertFailed() if the object is inconsistent.
+
+   If check_content is zero, only check header fields: reduce the overhead.
+
+   The function always return 1. The return value is just here to be able to
+   write:
+
+   assert(_PyObject_CheckConsistency(obj, 1)); */
+extern int _PyObject_CheckConsistency(PyObject *op, int check_content);
+
+extern void _PyDebugAllocatorStats(FILE *out, const char *block_name,
+                                   int num_blocks, size_t sizeof_block);
+
+extern void _PyObject_DebugTypeStats(FILE *out);
+
+#ifdef Py_TRACE_REFS
+// Forget a reference registered by _Py_NewReference(). Function called by
+// _Py_Dealloc().
+//
+// On a free list, the function can be used before modifying an object to
+// remove the object from traced objects. Then _Py_NewReference() or
+// _Py_NewReferenceNoTotal() should be called again on the object to trace
+// it again.
+extern void _Py_ForgetReference(PyObject *);
+#endif
+
+// Export for shared _testinternalcapi extension
+PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *);
 
 /* We need to maintain an internal copy of Py{Var}Object_HEAD_INIT to avoid
    designated initializer conflicts in C++20. If we use the deinition in
@@ -22,19 +54,26 @@ extern "C" {
    Furthermore, we can't use designated initializers in Extensions since these
    are not supported pre-C++20. Thus, keeping an internal copy here is the most
    backwards compatible solution */
+#if defined(Py_GIL_DISABLED)
+#define _PyObject_HEAD_INIT(type)                   \
+    {                                               \
+        .ob_ref_local = _Py_IMMORTAL_REFCNT_LOCAL,  \
+        .ob_type = (type)                           \
+    }
+#else
 #define _PyObject_HEAD_INIT(type)         \
     {                                     \
-        _PyObject_EXTRA_INIT              \
         .ob_refcnt = _Py_IMMORTAL_REFCNT, \
         .ob_type = (type)                 \
-    },
+    }
+#endif
 #define _PyVarObject_HEAD_INIT(type, size)    \
     {                                         \
-        .ob_base = _PyObject_HEAD_INIT(type)  \
+        .ob_base = _PyObject_HEAD_INIT(type), \
         .ob_size = size                       \
-    },
+    }
 
-PyAPI_FUNC(void) _Py_NO_RETURN _Py_FatalRefcountErrorFunc(
+extern void _Py_NO_RETURN _Py_FatalRefcountErrorFunc(
     const char *func,
     const char *message);
 
@@ -64,18 +103,73 @@ static inline void _Py_RefcntAdd(PyObject* op, Py_ssize_t n)
 #ifdef Py_REF_DEBUG
     _Py_AddRefTotal(_PyInterpreterState_GET(), n);
 #endif
+#if !defined(Py_GIL_DISABLED)
     op->ob_refcnt += n;
+#else
+    if (_Py_IsOwnedByCurrentThread(op)) {
+        uint32_t local = op->ob_ref_local;
+        Py_ssize_t refcnt = (Py_ssize_t)local + n;
+#  if PY_SSIZE_T_MAX > UINT32_MAX
+        if (refcnt > (Py_ssize_t)UINT32_MAX) {
+            // Make the object immortal if the 32-bit local reference count
+            // would overflow.
+            refcnt = _Py_IMMORTAL_REFCNT_LOCAL;
+        }
+#  endif
+        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, (uint32_t)refcnt);
+    }
+    else {
+        _Py_atomic_add_ssize(&op->ob_ref_shared, (n << _Py_REF_SHARED_SHIFT));
+    }
+#endif
 }
 #define _Py_RefcntAdd(op, n) _Py_RefcntAdd(_PyObject_CAST(op), n)
 
 static inline void _Py_SetImmortal(PyObject *op)
 {
     if (op) {
+#ifdef Py_GIL_DISABLED
+        op->ob_tid = _Py_UNOWNED_TID;
+        op->ob_ref_local = _Py_IMMORTAL_REFCNT_LOCAL;
+        op->ob_ref_shared = 0;
+#else
         op->ob_refcnt = _Py_IMMORTAL_REFCNT;
+#endif
     }
 }
 #define _Py_SetImmortal(op) _Py_SetImmortal(_PyObject_CAST(op))
 
+// Makes an immortal object mortal again with the specified refcnt. Should only
+// be used during runtime finalization.
+static inline void _Py_SetMortal(PyObject *op, Py_ssize_t refcnt)
+{
+    if (op) {
+        assert(_Py_IsImmortal(op));
+#ifdef Py_GIL_DISABLED
+        op->ob_tid = _Py_UNOWNED_TID;
+        op->ob_ref_local = 0;
+        op->ob_ref_shared = _Py_REF_SHARED(refcnt, _Py_REF_MERGED);
+#else
+        op->ob_refcnt = refcnt;
+#endif
+    }
+}
+
+/* _Py_ClearImmortal() should only be used during runtime finalization. */
+static inline void _Py_ClearImmortal(PyObject *op)
+{
+    if (op) {
+        _Py_SetMortal(op, 1);
+        Py_DECREF(op);
+    }
+}
+#define _Py_ClearImmortal(op) \
+    do { \
+        _Py_ClearImmortal(_PyObject_CAST(op)); \
+        op = NULL; \
+    } while (0)
+
+#if !defined(Py_GIL_DISABLED)
 static inline void
 _Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
 {
@@ -115,13 +209,44 @@ _Py_DECREF_NO_DEALLOC(PyObject *op)
 #endif
 }
 
+#else
+// TODO: implement Py_DECREF specializations for Py_GIL_DISABLED build
+static inline void
+_Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
+{
+    Py_DECREF(op);
+}
+
+static inline void
+_Py_DECREF_NO_DEALLOC(PyObject *op)
+{
+    Py_DECREF(op);
+}
+
+static inline int
+_Py_REF_IS_MERGED(Py_ssize_t ob_ref_shared)
+{
+    return (ob_ref_shared & _Py_REF_SHARED_FLAG_MASK) == _Py_REF_MERGED;
+}
+
+static inline int
+_Py_REF_IS_QUEUED(Py_ssize_t ob_ref_shared)
+{
+    return (ob_ref_shared & _Py_REF_SHARED_FLAG_MASK) == _Py_REF_QUEUED;
+}
+
+// Merge the local and shared reference count fields and add `extra` to the
+// refcount when merging.
+Py_ssize_t _Py_ExplicitMergeRefcount(PyObject *op, Py_ssize_t extra);
+#endif // !defined(Py_GIL_DISABLED)
+
 #ifdef Py_REF_DEBUG
 #  undef _Py_DEC_REFTOTAL
 #endif
 
 
-PyAPI_FUNC(int) _PyType_CheckConsistency(PyTypeObject *type);
-PyAPI_FUNC(int) _PyDict_CheckConsistency(PyObject *mp, int check_content);
+extern int _PyType_CheckConsistency(PyTypeObject *type);
+extern int _PyDict_CheckConsistency(PyObject *mp, int check_content);
 
 /* Update the Python traceback of an object. This function must be called
    when a memory block is reused from a free list.
@@ -137,6 +262,9 @@ _PyType_HasFeature(PyTypeObject *type, unsigned long feature) {
 
 extern void _PyType_InitCache(PyInterpreterState *interp);
 
+extern PyStatus _PyObject_InitState(PyInterpreterState *interp);
+extern void _PyObject_FiniState(PyInterpreterState *interp);
+extern bool _PyRefchain_IsTraced(PyInterpreterState *interp, PyObject *obj);
 
 /* Inline functions trading binary compatibility for speed:
    _PyObject_Init() is the fast version of PyObject_Init(), and
@@ -255,9 +383,9 @@ extern void _PyDebug_PrintTotalRefs(void);
 #endif
 
 #ifdef Py_TRACE_REFS
-extern void _Py_AddToAllObjects(PyObject *op, int force);
-extern void _Py_PrintReferences(FILE *);
-extern void _Py_PrintReferenceAddresses(FILE *);
+extern void _Py_AddToAllObjects(PyObject *op);
+extern void _Py_PrintReferences(PyInterpreterState *, FILE *);
+extern void _Py_PrintReferenceAddresses(PyInterpreterState *, FILE *);
 #endif
 
 
@@ -311,9 +439,9 @@ _PyObject_GET_WEAKREFS_LISTPTR_FROM_OFFSET(PyObject *op)
 static inline int
 _PyObject_IS_GC(PyObject *obj)
 {
-    return (PyType_IS_GC(Py_TYPE(obj))
-            && (Py_TYPE(obj)->tp_is_gc == NULL
-                || Py_TYPE(obj)->tp_is_gc(obj)));
+    PyTypeObject *type = Py_TYPE(obj);
+    return (PyType_IS_GC(type)
+            && (type->tp_is_gc == NULL || type->tp_is_gc(obj)));
 }
 
 // Fast inlined version of PyType_IS_GC()
@@ -340,8 +468,14 @@ static inline int _PyType_SUPPORTS_WEAKREFS(PyTypeObject *type) {
 }
 
 extern PyObject* _PyType_AllocNoTrack(PyTypeObject *type, Py_ssize_t nitems);
+extern PyObject *_PyType_NewManagedObject(PyTypeObject *type);
+
+extern PyTypeObject* _PyType_CalculateMetaclass(PyTypeObject *, PyObject *);
+extern PyObject* _PyType_GetDocFromInternalDoc(const char *, const char *);
+extern PyObject* _PyType_GetTextSignatureFromInternalDoc(const char *, const char *, int);
 
 extern int _PyObject_InitializeDict(PyObject *obj);
+int _PyObject_InitInlineValues(PyObject *obj, PyTypeObject *tp);
 extern int _PyObject_StoreInstanceAttribute(PyObject *obj, PyDictValues *values,
                                           PyObject *name, PyObject *value);
 PyObject * _PyObject_GetInstanceAttribute(PyObject *obj, PyDictValues *values,
@@ -392,7 +526,17 @@ extern PyObject ** _PyObject_ComputedDictPointer(PyObject *);
 extern void _PyObject_FreeInstanceAttributes(PyObject *obj);
 extern int _PyObject_IsInstanceDictEmpty(PyObject *);
 
-PyAPI_FUNC(PyObject *) _PyObject_LookupSpecial(PyObject *, PyObject *);
+// Export for 'math' shared extension
+PyAPI_FUNC(PyObject*) _PyObject_LookupSpecial(PyObject *, PyObject *);
+
+extern int _PyObject_IsAbstract(PyObject *);
+
+extern int _PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method);
+extern PyObject* _PyObject_NextNotImplemented(PyObject *);
+
+// Pickle support.
+// Export for '_datetime' shared extension
+PyAPI_FUNC(PyObject*) _PyObject_GetState(PyObject *);
 
 /* C function call trampolines to mitigate bad function pointer casts.
  *
@@ -421,6 +565,14 @@ extern PyObject* _PyCFunctionWithKeywords_TrampolineCall(
     (meth)((self), (args), (kw))
 #endif // __EMSCRIPTEN__ && PY_CALL_TRAMPOLINE
 
+// Export these 2 symbols for '_pickle' shared extension
+PyAPI_DATA(PyTypeObject) _PyNone_Type;
+PyAPI_DATA(PyTypeObject) _PyNotImplemented_Type;
+
+// Maps Py_LT to Py_GT, ..., Py_GE to Py_LE.
+// Export for the stable ABI.
+PyAPI_DATA(int) _Py_SwappedOp[];
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_object_state.h b/Include/internal/pycore_object_state.h
index 94005d77881432..9eac27b1a9a4e3 100644
--- a/Include/internal/pycore_object_state.h
+++ b/Include/internal/pycore_object_state.h
@@ -8,20 +8,26 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "pycore_hashtable.h"     // _Py_hashtable_t
+
 struct _py_object_runtime_state {
 #ifdef Py_REF_DEBUG
     Py_ssize_t interpreter_leaks;
-#else
-    int _not_used;
 #endif
+    int _not_used;
 };
 
 struct _py_object_state {
 #ifdef Py_REF_DEBUG
     Py_ssize_t reftotal;
-#else
-    int _not_used;
 #endif
+#ifdef Py_TRACE_REFS
+    // Hash table storing all objects. The key is the object pointer
+    // (PyObject*) and the value is always the number 1 (as uintptr_t).
+    // See _PyRefchain_IsTraced() and _PyRefchain_Trace() functions.
+    _Py_hashtable_t *refchain;
+#endif
+    int _not_used;
 };
 
 
diff --git a/Include/internal/pycore_obmalloc.h b/Include/internal/pycore_obmalloc.h
index ca2a0419b4f038..b0dbf53d4e3d15 100644
--- a/Include/internal/pycore_obmalloc.h
+++ b/Include/internal/pycore_obmalloc.h
@@ -687,7 +687,7 @@ extern void _PyInterpreterState_FinalizeAllocatedBlocks(PyInterpreterState *);
 
 
 #ifdef WITH_PYMALLOC
-// Export the symbol for the 3rd party guppy3 project
+// Export the symbol for the 3rd party 'guppy3' project
 PyAPI_FUNC(int) _PyObject_DebugMallocStats(FILE *out);
 #endif
 
diff --git a/Include/internal/pycore_opcode.h b/Include/internal/pycore_opcode.h
deleted file mode 100644
index e823e1bfb5d452..00000000000000
--- a/Include/internal/pycore_opcode.h
+++ /dev/null
@@ -1,587 +0,0 @@
-// Auto-generated by Tools/build/generate_opcode_h.py from Lib/opcode.py
-
-#ifndef Py_INTERNAL_OPCODE_H
-#define Py_INTERNAL_OPCODE_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef Py_BUILD_CORE
-#  error "this header requires Py_BUILD_CORE define"
-#endif
-
-#include "opcode.h"
-
-extern const uint32_t _PyOpcode_Jump[9];
-
-extern const uint8_t _PyOpcode_Caches[256];
-
-extern const uint8_t _PyOpcode_Deopt[256];
-
-#ifdef NEED_OPCODE_TABLES
-const uint32_t _PyOpcode_Jump[9] = {
-    0U,
-    0U,
-    536870912U,
-    135020544U,
-    4163U,
-    0U,
-    0U,
-    0U,
-    48U,
-};
-
-const uint8_t _PyOpcode_Caches[256] = {
-    [BINARY_SUBSCR] = 1,
-    [STORE_SUBSCR] = 1,
-    [UNPACK_SEQUENCE] = 1,
-    [FOR_ITER] = 1,
-    [STORE_ATTR] = 4,
-    [LOAD_ATTR] = 9,
-    [COMPARE_OP] = 1,
-    [LOAD_GLOBAL] = 4,
-    [BINARY_OP] = 1,
-    [SEND] = 1,
-    [LOAD_SUPER_ATTR] = 1,
-    [CALL] = 3,
-};
-
-const uint8_t _PyOpcode_Deopt[256] = {
-    [BEFORE_ASYNC_WITH] = BEFORE_ASYNC_WITH,
-    [BEFORE_WITH] = BEFORE_WITH,
-    [BINARY_OP] = BINARY_OP,
-    [BINARY_OP_ADD_FLOAT] = BINARY_OP,
-    [BINARY_OP_ADD_INT] = BINARY_OP,
-    [BINARY_OP_ADD_UNICODE] = BINARY_OP,
-    [BINARY_OP_INPLACE_ADD_UNICODE] = BINARY_OP,
-    [BINARY_OP_MULTIPLY_FLOAT] = BINARY_OP,
-    [BINARY_OP_MULTIPLY_INT] = BINARY_OP,
-    [BINARY_OP_SUBTRACT_FLOAT] = BINARY_OP,
-    [BINARY_OP_SUBTRACT_INT] = BINARY_OP,
-    [BINARY_SLICE] = BINARY_SLICE,
-    [BINARY_SUBSCR] = BINARY_SUBSCR,
-    [BINARY_SUBSCR_DICT] = BINARY_SUBSCR,
-    [BINARY_SUBSCR_GETITEM] = BINARY_SUBSCR,
-    [BINARY_SUBSCR_LIST_INT] = BINARY_SUBSCR,
-    [BINARY_SUBSCR_TUPLE_INT] = BINARY_SUBSCR,
-    [BUILD_CONST_KEY_MAP] = BUILD_CONST_KEY_MAP,
-    [BUILD_LIST] = BUILD_LIST,
-    [BUILD_MAP] = BUILD_MAP,
-    [BUILD_SET] = BUILD_SET,
-    [BUILD_SLICE] = BUILD_SLICE,
-    [BUILD_STRING] = BUILD_STRING,
-    [BUILD_TUPLE] = BUILD_TUPLE,
-    [CACHE] = CACHE,
-    [CALL] = CALL,
-    [CALL_BOUND_METHOD_EXACT_ARGS] = CALL,
-    [CALL_BUILTIN_CLASS] = CALL,
-    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = CALL,
-    [CALL_FUNCTION_EX] = CALL_FUNCTION_EX,
-    [CALL_INTRINSIC_1] = CALL_INTRINSIC_1,
-    [CALL_INTRINSIC_2] = CALL_INTRINSIC_2,
-    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = CALL,
-    [CALL_NO_KW_BUILTIN_FAST] = CALL,
-    [CALL_NO_KW_BUILTIN_O] = CALL,
-    [CALL_NO_KW_ISINSTANCE] = CALL,
-    [CALL_NO_KW_LEN] = CALL,
-    [CALL_NO_KW_LIST_APPEND] = CALL,
-    [CALL_NO_KW_METHOD_DESCRIPTOR_FAST] = CALL,
-    [CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS] = CALL,
-    [CALL_NO_KW_METHOD_DESCRIPTOR_O] = CALL,
-    [CALL_NO_KW_STR_1] = CALL,
-    [CALL_NO_KW_TUPLE_1] = CALL,
-    [CALL_NO_KW_TYPE_1] = CALL,
-    [CALL_PY_EXACT_ARGS] = CALL,
-    [CALL_PY_WITH_DEFAULTS] = CALL,
-    [CHECK_EG_MATCH] = CHECK_EG_MATCH,
-    [CHECK_EXC_MATCH] = CHECK_EXC_MATCH,
-    [CLEANUP_THROW] = CLEANUP_THROW,
-    [COMPARE_OP] = COMPARE_OP,
-    [COMPARE_OP_FLOAT] = COMPARE_OP,
-    [COMPARE_OP_INT] = COMPARE_OP,
-    [COMPARE_OP_STR] = COMPARE_OP,
-    [CONTAINS_OP] = CONTAINS_OP,
-    [COPY] = COPY,
-    [COPY_FREE_VARS] = COPY_FREE_VARS,
-    [DELETE_ATTR] = DELETE_ATTR,
-    [DELETE_DEREF] = DELETE_DEREF,
-    [DELETE_FAST] = DELETE_FAST,
-    [DELETE_GLOBAL] = DELETE_GLOBAL,
-    [DELETE_NAME] = DELETE_NAME,
-    [DELETE_SUBSCR] = DELETE_SUBSCR,
-    [DICT_MERGE] = DICT_MERGE,
-    [DICT_UPDATE] = DICT_UPDATE,
-    [END_ASYNC_FOR] = END_ASYNC_FOR,
-    [END_FOR] = END_FOR,
-    [END_SEND] = END_SEND,
-    [EXTENDED_ARG] = EXTENDED_ARG,
-    [FORMAT_VALUE] = FORMAT_VALUE,
-    [FOR_ITER] = FOR_ITER,
-    [FOR_ITER_GEN] = FOR_ITER,
-    [FOR_ITER_LIST] = FOR_ITER,
-    [FOR_ITER_RANGE] = FOR_ITER,
-    [FOR_ITER_TUPLE] = FOR_ITER,
-    [GET_AITER] = GET_AITER,
-    [GET_ANEXT] = GET_ANEXT,
-    [GET_AWAITABLE] = GET_AWAITABLE,
-    [GET_ITER] = GET_ITER,
-    [GET_LEN] = GET_LEN,
-    [GET_YIELD_FROM_ITER] = GET_YIELD_FROM_ITER,
-    [IMPORT_FROM] = IMPORT_FROM,
-    [IMPORT_NAME] = IMPORT_NAME,
-    [INSTRUMENTED_CALL] = INSTRUMENTED_CALL,
-    [INSTRUMENTED_CALL_FUNCTION_EX] = INSTRUMENTED_CALL_FUNCTION_EX,
-    [INSTRUMENTED_END_FOR] = INSTRUMENTED_END_FOR,
-    [INSTRUMENTED_END_SEND] = INSTRUMENTED_END_SEND,
-    [INSTRUMENTED_FOR_ITER] = INSTRUMENTED_FOR_ITER,
-    [INSTRUMENTED_INSTRUCTION] = INSTRUMENTED_INSTRUCTION,
-    [INSTRUMENTED_JUMP_BACKWARD] = INSTRUMENTED_JUMP_BACKWARD,
-    [INSTRUMENTED_JUMP_FORWARD] = INSTRUMENTED_JUMP_FORWARD,
-    [INSTRUMENTED_LINE] = INSTRUMENTED_LINE,
-    [INSTRUMENTED_POP_JUMP_IF_FALSE] = INSTRUMENTED_POP_JUMP_IF_FALSE,
-    [INSTRUMENTED_POP_JUMP_IF_NONE] = INSTRUMENTED_POP_JUMP_IF_NONE,
-    [INSTRUMENTED_POP_JUMP_IF_NOT_NONE] = INSTRUMENTED_POP_JUMP_IF_NOT_NONE,
-    [INSTRUMENTED_POP_JUMP_IF_TRUE] = INSTRUMENTED_POP_JUMP_IF_TRUE,
-    [INSTRUMENTED_RESUME] = INSTRUMENTED_RESUME,
-    [INSTRUMENTED_RETURN_CONST] = INSTRUMENTED_RETURN_CONST,
-    [INSTRUMENTED_RETURN_VALUE] = INSTRUMENTED_RETURN_VALUE,
-    [INSTRUMENTED_YIELD_VALUE] = INSTRUMENTED_YIELD_VALUE,
-    [INTERPRETER_EXIT] = INTERPRETER_EXIT,
-    [IS_OP] = IS_OP,
-    [JUMP_BACKWARD] = JUMP_BACKWARD,
-    [JUMP_BACKWARD_NO_INTERRUPT] = JUMP_BACKWARD_NO_INTERRUPT,
-    [JUMP_FORWARD] = JUMP_FORWARD,
-    [KW_NAMES] = KW_NAMES,
-    [LIST_APPEND] = LIST_APPEND,
-    [LIST_EXTEND] = LIST_EXTEND,
-    [LOAD_ASSERTION_ERROR] = LOAD_ASSERTION_ERROR,
-    [LOAD_ATTR] = LOAD_ATTR,
-    [LOAD_ATTR_CLASS] = LOAD_ATTR,
-    [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = LOAD_ATTR,
-    [LOAD_ATTR_INSTANCE_VALUE] = LOAD_ATTR,
-    [LOAD_ATTR_METHOD_LAZY_DICT] = LOAD_ATTR,
-    [LOAD_ATTR_METHOD_NO_DICT] = LOAD_ATTR,
-    [LOAD_ATTR_METHOD_WITH_VALUES] = LOAD_ATTR,
-    [LOAD_ATTR_MODULE] = LOAD_ATTR,
-    [LOAD_ATTR_PROPERTY] = LOAD_ATTR,
-    [LOAD_ATTR_SLOT] = LOAD_ATTR,
-    [LOAD_ATTR_WITH_HINT] = LOAD_ATTR,
-    [LOAD_BUILD_CLASS] = LOAD_BUILD_CLASS,
-    [LOAD_CLASSDEREF] = LOAD_CLASSDEREF,
-    [LOAD_CLOSURE] = LOAD_CLOSURE,
-    [LOAD_CONST] = LOAD_CONST,
-    [LOAD_CONST__LOAD_FAST] = LOAD_CONST,
-    [LOAD_DEREF] = LOAD_DEREF,
-    [LOAD_FAST] = LOAD_FAST,
-    [LOAD_FAST_AND_CLEAR] = LOAD_FAST_AND_CLEAR,
-    [LOAD_FAST_CHECK] = LOAD_FAST_CHECK,
-    [LOAD_FAST__LOAD_CONST] = LOAD_FAST,
-    [LOAD_FAST__LOAD_FAST] = LOAD_FAST,
-    [LOAD_GLOBAL] = LOAD_GLOBAL,
-    [LOAD_GLOBAL_BUILTIN] = LOAD_GLOBAL,
-    [LOAD_GLOBAL_MODULE] = LOAD_GLOBAL,
-    [LOAD_NAME] = LOAD_NAME,
-    [LOAD_SUPER_ATTR] = LOAD_SUPER_ATTR,
-    [LOAD_SUPER_ATTR_ATTR] = LOAD_SUPER_ATTR,
-    [LOAD_SUPER_ATTR_METHOD] = LOAD_SUPER_ATTR,
-    [MAKE_CELL] = MAKE_CELL,
-    [MAKE_FUNCTION] = MAKE_FUNCTION,
-    [MAP_ADD] = MAP_ADD,
-    [MATCH_CLASS] = MATCH_CLASS,
-    [MATCH_KEYS] = MATCH_KEYS,
-    [MATCH_MAPPING] = MATCH_MAPPING,
-    [MATCH_SEQUENCE] = MATCH_SEQUENCE,
-    [NOP] = NOP,
-    [POP_EXCEPT] = POP_EXCEPT,
-    [POP_JUMP_IF_FALSE] = POP_JUMP_IF_FALSE,
-    [POP_JUMP_IF_NONE] = POP_JUMP_IF_NONE,
-    [POP_JUMP_IF_NOT_NONE] = POP_JUMP_IF_NOT_NONE,
-    [POP_JUMP_IF_TRUE] = POP_JUMP_IF_TRUE,
-    [POP_TOP] = POP_TOP,
-    [PUSH_EXC_INFO] = PUSH_EXC_INFO,
-    [PUSH_NULL] = PUSH_NULL,
-    [RAISE_VARARGS] = RAISE_VARARGS,
-    [RERAISE] = RERAISE,
-    [RESERVED] = RESERVED,
-    [RESUME] = RESUME,
-    [RETURN_CONST] = RETURN_CONST,
-    [RETURN_GENERATOR] = RETURN_GENERATOR,
-    [RETURN_VALUE] = RETURN_VALUE,
-    [SEND] = SEND,
-    [SEND_GEN] = SEND,
-    [SETUP_ANNOTATIONS] = SETUP_ANNOTATIONS,
-    [SET_ADD] = SET_ADD,
-    [SET_UPDATE] = SET_UPDATE,
-    [STORE_ATTR] = STORE_ATTR,
-    [STORE_ATTR_INSTANCE_VALUE] = STORE_ATTR,
-    [STORE_ATTR_SLOT] = STORE_ATTR,
-    [STORE_ATTR_WITH_HINT] = STORE_ATTR,
-    [STORE_DEREF] = STORE_DEREF,
-    [STORE_FAST] = STORE_FAST,
-    [STORE_FAST__LOAD_FAST] = STORE_FAST,
-    [STORE_FAST__STORE_FAST] = STORE_FAST,
-    [STORE_GLOBAL] = STORE_GLOBAL,
-    [STORE_NAME] = STORE_NAME,
-    [STORE_SLICE] = STORE_SLICE,
-    [STORE_SUBSCR] = STORE_SUBSCR,
-    [STORE_SUBSCR_DICT] = STORE_SUBSCR,
-    [STORE_SUBSCR_LIST_INT] = STORE_SUBSCR,
-    [SWAP] = SWAP,
-    [UNARY_INVERT] = UNARY_INVERT,
-    [UNARY_NEGATIVE] = UNARY_NEGATIVE,
-    [UNARY_NOT] = UNARY_NOT,
-    [UNPACK_EX] = UNPACK_EX,
-    [UNPACK_SEQUENCE] = UNPACK_SEQUENCE,
-    [UNPACK_SEQUENCE_LIST] = UNPACK_SEQUENCE,
-    [UNPACK_SEQUENCE_TUPLE] = UNPACK_SEQUENCE,
-    [UNPACK_SEQUENCE_TWO_TUPLE] = UNPACK_SEQUENCE,
-    [WITH_EXCEPT_START] = WITH_EXCEPT_START,
-    [YIELD_VALUE] = YIELD_VALUE,
-};
-#endif   // NEED_OPCODE_TABLES
-
-#ifdef Py_DEBUG
-static const char *const _PyOpcode_OpName[267] = {
-    [CACHE] = "CACHE",
-    [POP_TOP] = "POP_TOP",
-    [PUSH_NULL] = "PUSH_NULL",
-    [INTERPRETER_EXIT] = "INTERPRETER_EXIT",
-    [END_FOR] = "END_FOR",
-    [END_SEND] = "END_SEND",
-    [BINARY_OP_ADD_FLOAT] = "BINARY_OP_ADD_FLOAT",
-    [BINARY_OP_ADD_INT] = "BINARY_OP_ADD_INT",
-    [BINARY_OP_ADD_UNICODE] = "BINARY_OP_ADD_UNICODE",
-    [NOP] = "NOP",
-    [BINARY_OP_INPLACE_ADD_UNICODE] = "BINARY_OP_INPLACE_ADD_UNICODE",
-    [UNARY_NEGATIVE] = "UNARY_NEGATIVE",
-    [UNARY_NOT] = "UNARY_NOT",
-    [BINARY_OP_MULTIPLY_FLOAT] = "BINARY_OP_MULTIPLY_FLOAT",
-    [BINARY_OP_MULTIPLY_INT] = "BINARY_OP_MULTIPLY_INT",
-    [UNARY_INVERT] = "UNARY_INVERT",
-    [BINARY_OP_SUBTRACT_FLOAT] = "BINARY_OP_SUBTRACT_FLOAT",
-    [RESERVED] = "RESERVED",
-    [BINARY_OP_SUBTRACT_INT] = "BINARY_OP_SUBTRACT_INT",
-    [BINARY_SUBSCR_DICT] = "BINARY_SUBSCR_DICT",
-    [BINARY_SUBSCR_GETITEM] = "BINARY_SUBSCR_GETITEM",
-    [BINARY_SUBSCR_LIST_INT] = "BINARY_SUBSCR_LIST_INT",
-    [BINARY_SUBSCR_TUPLE_INT] = "BINARY_SUBSCR_TUPLE_INT",
-    [CALL_PY_EXACT_ARGS] = "CALL_PY_EXACT_ARGS",
-    [CALL_PY_WITH_DEFAULTS] = "CALL_PY_WITH_DEFAULTS",
-    [BINARY_SUBSCR] = "BINARY_SUBSCR",
-    [BINARY_SLICE] = "BINARY_SLICE",
-    [STORE_SLICE] = "STORE_SLICE",
-    [CALL_BOUND_METHOD_EXACT_ARGS] = "CALL_BOUND_METHOD_EXACT_ARGS",
-    [CALL_BUILTIN_CLASS] = "CALL_BUILTIN_CLASS",
-    [GET_LEN] = "GET_LEN",
-    [MATCH_MAPPING] = "MATCH_MAPPING",
-    [MATCH_SEQUENCE] = "MATCH_SEQUENCE",
-    [MATCH_KEYS] = "MATCH_KEYS",
-    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = "CALL_BUILTIN_FAST_WITH_KEYWORDS",
-    [PUSH_EXC_INFO] = "PUSH_EXC_INFO",
-    [CHECK_EXC_MATCH] = "CHECK_EXC_MATCH",
-    [CHECK_EG_MATCH] = "CHECK_EG_MATCH",
-    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = "CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS",
-    [CALL_NO_KW_BUILTIN_FAST] = "CALL_NO_KW_BUILTIN_FAST",
-    [CALL_NO_KW_BUILTIN_O] = "CALL_NO_KW_BUILTIN_O",
-    [CALL_NO_KW_ISINSTANCE] = "CALL_NO_KW_ISINSTANCE",
-    [CALL_NO_KW_LEN] = "CALL_NO_KW_LEN",
-    [CALL_NO_KW_LIST_APPEND] = "CALL_NO_KW_LIST_APPEND",
-    [CALL_NO_KW_METHOD_DESCRIPTOR_FAST] = "CALL_NO_KW_METHOD_DESCRIPTOR_FAST",
-    [CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS] = "CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS",
-    [CALL_NO_KW_METHOD_DESCRIPTOR_O] = "CALL_NO_KW_METHOD_DESCRIPTOR_O",
-    [CALL_NO_KW_STR_1] = "CALL_NO_KW_STR_1",
-    [CALL_NO_KW_TUPLE_1] = "CALL_NO_KW_TUPLE_1",
-    [WITH_EXCEPT_START] = "WITH_EXCEPT_START",
-    [GET_AITER] = "GET_AITER",
-    [GET_ANEXT] = "GET_ANEXT",
-    [BEFORE_ASYNC_WITH] = "BEFORE_ASYNC_WITH",
-    [BEFORE_WITH] = "BEFORE_WITH",
-    [END_ASYNC_FOR] = "END_ASYNC_FOR",
-    [CLEANUP_THROW] = "CLEANUP_THROW",
-    [CALL_NO_KW_TYPE_1] = "CALL_NO_KW_TYPE_1",
-    [COMPARE_OP_FLOAT] = "COMPARE_OP_FLOAT",
-    [COMPARE_OP_INT] = "COMPARE_OP_INT",
-    [COMPARE_OP_STR] = "COMPARE_OP_STR",
-    [STORE_SUBSCR] = "STORE_SUBSCR",
-    [DELETE_SUBSCR] = "DELETE_SUBSCR",
-    [FOR_ITER_LIST] = "FOR_ITER_LIST",
-    [FOR_ITER_TUPLE] = "FOR_ITER_TUPLE",
-    [FOR_ITER_RANGE] = "FOR_ITER_RANGE",
-    [FOR_ITER_GEN] = "FOR_ITER_GEN",
-    [LOAD_SUPER_ATTR_ATTR] = "LOAD_SUPER_ATTR_ATTR",
-    [LOAD_SUPER_ATTR_METHOD] = "LOAD_SUPER_ATTR_METHOD",
-    [GET_ITER] = "GET_ITER",
-    [GET_YIELD_FROM_ITER] = "GET_YIELD_FROM_ITER",
-    [LOAD_ATTR_CLASS] = "LOAD_ATTR_CLASS",
-    [LOAD_BUILD_CLASS] = "LOAD_BUILD_CLASS",
-    [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
-    [LOAD_ATTR_INSTANCE_VALUE] = "LOAD_ATTR_INSTANCE_VALUE",
-    [LOAD_ASSERTION_ERROR] = "LOAD_ASSERTION_ERROR",
-    [RETURN_GENERATOR] = "RETURN_GENERATOR",
-    [LOAD_ATTR_MODULE] = "LOAD_ATTR_MODULE",
-    [LOAD_ATTR_PROPERTY] = "LOAD_ATTR_PROPERTY",
-    [LOAD_ATTR_SLOT] = "LOAD_ATTR_SLOT",
-    [LOAD_ATTR_WITH_HINT] = "LOAD_ATTR_WITH_HINT",
-    [LOAD_ATTR_METHOD_LAZY_DICT] = "LOAD_ATTR_METHOD_LAZY_DICT",
-    [LOAD_ATTR_METHOD_NO_DICT] = "LOAD_ATTR_METHOD_NO_DICT",
-    [LOAD_ATTR_METHOD_WITH_VALUES] = "LOAD_ATTR_METHOD_WITH_VALUES",
-    [RETURN_VALUE] = "RETURN_VALUE",
-    [LOAD_CONST__LOAD_FAST] = "LOAD_CONST__LOAD_FAST",
-    [SETUP_ANNOTATIONS] = "SETUP_ANNOTATIONS",
-    [LOAD_FAST__LOAD_CONST] = "LOAD_FAST__LOAD_CONST",
-    [LOAD_FAST__LOAD_FAST] = "LOAD_FAST__LOAD_FAST",
-    [LOAD_GLOBAL_BUILTIN] = "LOAD_GLOBAL_BUILTIN",
-    [POP_EXCEPT] = "POP_EXCEPT",
-    [STORE_NAME] = "STORE_NAME",
-    [DELETE_NAME] = "DELETE_NAME",
-    [UNPACK_SEQUENCE] = "UNPACK_SEQUENCE",
-    [FOR_ITER] = "FOR_ITER",
-    [UNPACK_EX] = "UNPACK_EX",
-    [STORE_ATTR] = "STORE_ATTR",
-    [DELETE_ATTR] = "DELETE_ATTR",
-    [STORE_GLOBAL] = "STORE_GLOBAL",
-    [DELETE_GLOBAL] = "DELETE_GLOBAL",
-    [SWAP] = "SWAP",
-    [LOAD_CONST] = "LOAD_CONST",
-    [LOAD_NAME] = "LOAD_NAME",
-    [BUILD_TUPLE] = "BUILD_TUPLE",
-    [BUILD_LIST] = "BUILD_LIST",
-    [BUILD_SET] = "BUILD_SET",
-    [BUILD_MAP] = "BUILD_MAP",
-    [LOAD_ATTR] = "LOAD_ATTR",
-    [COMPARE_OP] = "COMPARE_OP",
-    [IMPORT_NAME] = "IMPORT_NAME",
-    [IMPORT_FROM] = "IMPORT_FROM",
-    [JUMP_FORWARD] = "JUMP_FORWARD",
-    [LOAD_GLOBAL_MODULE] = "LOAD_GLOBAL_MODULE",
-    [STORE_ATTR_INSTANCE_VALUE] = "STORE_ATTR_INSTANCE_VALUE",
-    [STORE_ATTR_SLOT] = "STORE_ATTR_SLOT",
-    [POP_JUMP_IF_FALSE] = "POP_JUMP_IF_FALSE",
-    [POP_JUMP_IF_TRUE] = "POP_JUMP_IF_TRUE",
-    [LOAD_GLOBAL] = "LOAD_GLOBAL",
-    [IS_OP] = "IS_OP",
-    [CONTAINS_OP] = "CONTAINS_OP",
-    [RERAISE] = "RERAISE",
-    [COPY] = "COPY",
-    [RETURN_CONST] = "RETURN_CONST",
-    [BINARY_OP] = "BINARY_OP",
-    [SEND] = "SEND",
-    [LOAD_FAST] = "LOAD_FAST",
-    [STORE_FAST] = "STORE_FAST",
-    [DELETE_FAST] = "DELETE_FAST",
-    [LOAD_FAST_CHECK] = "LOAD_FAST_CHECK",
-    [POP_JUMP_IF_NOT_NONE] = "POP_JUMP_IF_NOT_NONE",
-    [POP_JUMP_IF_NONE] = "POP_JUMP_IF_NONE",
-    [RAISE_VARARGS] = "RAISE_VARARGS",
-    [GET_AWAITABLE] = "GET_AWAITABLE",
-    [MAKE_FUNCTION] = "MAKE_FUNCTION",
-    [BUILD_SLICE] = "BUILD_SLICE",
-    [JUMP_BACKWARD_NO_INTERRUPT] = "JUMP_BACKWARD_NO_INTERRUPT",
-    [MAKE_CELL] = "MAKE_CELL",
-    [LOAD_CLOSURE] = "LOAD_CLOSURE",
-    [LOAD_DEREF] = "LOAD_DEREF",
-    [STORE_DEREF] = "STORE_DEREF",
-    [DELETE_DEREF] = "DELETE_DEREF",
-    [JUMP_BACKWARD] = "JUMP_BACKWARD",
-    [LOAD_SUPER_ATTR] = "LOAD_SUPER_ATTR",
-    [CALL_FUNCTION_EX] = "CALL_FUNCTION_EX",
-    [LOAD_FAST_AND_CLEAR] = "LOAD_FAST_AND_CLEAR",
-    [EXTENDED_ARG] = "EXTENDED_ARG",
-    [LIST_APPEND] = "LIST_APPEND",
-    [SET_ADD] = "SET_ADD",
-    [MAP_ADD] = "MAP_ADD",
-    [LOAD_CLASSDEREF] = "LOAD_CLASSDEREF",
-    [COPY_FREE_VARS] = "COPY_FREE_VARS",
-    [YIELD_VALUE] = "YIELD_VALUE",
-    [RESUME] = "RESUME",
-    [MATCH_CLASS] = "MATCH_CLASS",
-    [STORE_ATTR_WITH_HINT] = "STORE_ATTR_WITH_HINT",
-    [STORE_FAST__LOAD_FAST] = "STORE_FAST__LOAD_FAST",
-    [FORMAT_VALUE] = "FORMAT_VALUE",
-    [BUILD_CONST_KEY_MAP] = "BUILD_CONST_KEY_MAP",
-    [BUILD_STRING] = "BUILD_STRING",
-    [STORE_FAST__STORE_FAST] = "STORE_FAST__STORE_FAST",
-    [STORE_SUBSCR_DICT] = "STORE_SUBSCR_DICT",
-    [STORE_SUBSCR_LIST_INT] = "STORE_SUBSCR_LIST_INT",
-    [UNPACK_SEQUENCE_LIST] = "UNPACK_SEQUENCE_LIST",
-    [LIST_EXTEND] = "LIST_EXTEND",
-    [SET_UPDATE] = "SET_UPDATE",
-    [DICT_MERGE] = "DICT_MERGE",
-    [DICT_UPDATE] = "DICT_UPDATE",
-    [UNPACK_SEQUENCE_TUPLE] = "UNPACK_SEQUENCE_TUPLE",
-    [UNPACK_SEQUENCE_TWO_TUPLE] = "UNPACK_SEQUENCE_TWO_TUPLE",
-    [SEND_GEN] = "SEND_GEN",
-    [169] = "<169>",
-    [170] = "<170>",
-    [CALL] = "CALL",
-    [KW_NAMES] = "KW_NAMES",
-    [CALL_INTRINSIC_1] = "CALL_INTRINSIC_1",
-    [CALL_INTRINSIC_2] = "CALL_INTRINSIC_2",
-    [175] = "<175>",
-    [176] = "<176>",
-    [177] = "<177>",
-    [178] = "<178>",
-    [179] = "<179>",
-    [180] = "<180>",
-    [181] = "<181>",
-    [182] = "<182>",
-    [183] = "<183>",
-    [184] = "<184>",
-    [185] = "<185>",
-    [186] = "<186>",
-    [187] = "<187>",
-    [188] = "<188>",
-    [189] = "<189>",
-    [190] = "<190>",
-    [191] = "<191>",
-    [192] = "<192>",
-    [193] = "<193>",
-    [194] = "<194>",
-    [195] = "<195>",
-    [196] = "<196>",
-    [197] = "<197>",
-    [198] = "<198>",
-    [199] = "<199>",
-    [200] = "<200>",
-    [201] = "<201>",
-    [202] = "<202>",
-    [203] = "<203>",
-    [204] = "<204>",
-    [205] = "<205>",
-    [206] = "<206>",
-    [207] = "<207>",
-    [208] = "<208>",
-    [209] = "<209>",
-    [210] = "<210>",
-    [211] = "<211>",
-    [212] = "<212>",
-    [213] = "<213>",
-    [214] = "<214>",
-    [215] = "<215>",
-    [216] = "<216>",
-    [217] = "<217>",
-    [218] = "<218>",
-    [219] = "<219>",
-    [220] = "<220>",
-    [221] = "<221>",
-    [222] = "<222>",
-    [223] = "<223>",
-    [224] = "<224>",
-    [225] = "<225>",
-    [226] = "<226>",
-    [227] = "<227>",
-    [228] = "<228>",
-    [229] = "<229>",
-    [230] = "<230>",
-    [231] = "<231>",
-    [232] = "<232>",
-    [233] = "<233>",
-    [234] = "<234>",
-    [235] = "<235>",
-    [236] = "<236>",
-    [237] = "<237>",
-    [INSTRUMENTED_POP_JUMP_IF_NONE] = "INSTRUMENTED_POP_JUMP_IF_NONE",
-    [INSTRUMENTED_POP_JUMP_IF_NOT_NONE] = "INSTRUMENTED_POP_JUMP_IF_NOT_NONE",
-    [INSTRUMENTED_RESUME] = "INSTRUMENTED_RESUME",
-    [INSTRUMENTED_CALL] = "INSTRUMENTED_CALL",
-    [INSTRUMENTED_RETURN_VALUE] = "INSTRUMENTED_RETURN_VALUE",
-    [INSTRUMENTED_YIELD_VALUE] = "INSTRUMENTED_YIELD_VALUE",
-    [INSTRUMENTED_CALL_FUNCTION_EX] = "INSTRUMENTED_CALL_FUNCTION_EX",
-    [INSTRUMENTED_JUMP_FORWARD] = "INSTRUMENTED_JUMP_FORWARD",
-    [INSTRUMENTED_JUMP_BACKWARD] = "INSTRUMENTED_JUMP_BACKWARD",
-    [INSTRUMENTED_RETURN_CONST] = "INSTRUMENTED_RETURN_CONST",
-    [INSTRUMENTED_FOR_ITER] = "INSTRUMENTED_FOR_ITER",
-    [INSTRUMENTED_POP_JUMP_IF_FALSE] = "INSTRUMENTED_POP_JUMP_IF_FALSE",
-    [INSTRUMENTED_POP_JUMP_IF_TRUE] = "INSTRUMENTED_POP_JUMP_IF_TRUE",
-    [INSTRUMENTED_END_FOR] = "INSTRUMENTED_END_FOR",
-    [INSTRUMENTED_END_SEND] = "INSTRUMENTED_END_SEND",
-    [INSTRUMENTED_INSTRUCTION] = "INSTRUMENTED_INSTRUCTION",
-    [INSTRUMENTED_LINE] = "INSTRUMENTED_LINE",
-    [255] = "<255>",
-    [SETUP_FINALLY] = "SETUP_FINALLY",
-    [SETUP_CLEANUP] = "SETUP_CLEANUP",
-    [SETUP_WITH] = "SETUP_WITH",
-    [POP_BLOCK] = "POP_BLOCK",
-    [JUMP] = "JUMP",
-    [JUMP_NO_INTERRUPT] = "JUMP_NO_INTERRUPT",
-    [LOAD_METHOD] = "LOAD_METHOD",
-    [LOAD_SUPER_METHOD] = "LOAD_SUPER_METHOD",
-    [LOAD_ZERO_SUPER_METHOD] = "LOAD_ZERO_SUPER_METHOD",
-    [LOAD_ZERO_SUPER_ATTR] = "LOAD_ZERO_SUPER_ATTR",
-    [STORE_FAST_MAYBE_NULL] = "STORE_FAST_MAYBE_NULL",
-};
-#endif
-
-#define EXTRA_CASES \
-    case 169: \
-    case 170: \
-    case 175: \
-    case 176: \
-    case 177: \
-    case 178: \
-    case 179: \
-    case 180: \
-    case 181: \
-    case 182: \
-    case 183: \
-    case 184: \
-    case 185: \
-    case 186: \
-    case 187: \
-    case 188: \
-    case 189: \
-    case 190: \
-    case 191: \
-    case 192: \
-    case 193: \
-    case 194: \
-    case 195: \
-    case 196: \
-    case 197: \
-    case 198: \
-    case 199: \
-    case 200: \
-    case 201: \
-    case 202: \
-    case 203: \
-    case 204: \
-    case 205: \
-    case 206: \
-    case 207: \
-    case 208: \
-    case 209: \
-    case 210: \
-    case 211: \
-    case 212: \
-    case 213: \
-    case 214: \
-    case 215: \
-    case 216: \
-    case 217: \
-    case 218: \
-    case 219: \
-    case 220: \
-    case 221: \
-    case 222: \
-    case 223: \
-    case 224: \
-    case 225: \
-    case 226: \
-    case 227: \
-    case 228: \
-    case 229: \
-    case 230: \
-    case 231: \
-    case 232: \
-    case 233: \
-    case 234: \
-    case 235: \
-    case 236: \
-    case 237: \
-    case 255: \
-        ;
-
-#ifdef __cplusplus
-}
-#endif
-#endif  // !Py_INTERNAL_OPCODE_H
diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h
new file mode 100644
index 00000000000000..774c0f99379ed6
--- /dev/null
+++ b/Include/internal/pycore_opcode_metadata.h
@@ -0,0 +1,2573 @@
+// This file is generated by Tools/cases_generator/generate_cases.py
+// from:
+//   Python/bytecodes.c
+// Do not edit!
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include <stdbool.h>              // bool
+
+
+#define IS_PSEUDO_INSTR(OP)  ( \
+    ((OP) == LOAD_CLOSURE) || \
+    ((OP) == STORE_FAST_MAYBE_NULL) || \
+    ((OP) == LOAD_SUPER_METHOD) || \
+    ((OP) == LOAD_ZERO_SUPER_METHOD) || \
+    ((OP) == LOAD_ZERO_SUPER_ATTR) || \
+    ((OP) == LOAD_METHOD) || \
+    ((OP) == JUMP) || \
+    ((OP) == JUMP_NO_INTERRUPT) || \
+    ((OP) == SETUP_FINALLY) || \
+    ((OP) == SETUP_CLEANUP) || \
+    ((OP) == SETUP_WITH) || \
+    ((OP) == POP_BLOCK) || \
+    0)
+
+#define _EXIT_TRACE 300
+#define _SET_IP 301
+#define _SPECIALIZE_TO_BOOL 302
+#define _TO_BOOL 303
+#define _GUARD_BOTH_INT 304
+#define _BINARY_OP_MULTIPLY_INT 305
+#define _BINARY_OP_ADD_INT 306
+#define _BINARY_OP_SUBTRACT_INT 307
+#define _GUARD_BOTH_FLOAT 308
+#define _BINARY_OP_MULTIPLY_FLOAT 309
+#define _BINARY_OP_ADD_FLOAT 310
+#define _BINARY_OP_SUBTRACT_FLOAT 311
+#define _GUARD_BOTH_UNICODE 312
+#define _BINARY_OP_ADD_UNICODE 313
+#define _BINARY_OP_INPLACE_ADD_UNICODE 314
+#define _SPECIALIZE_BINARY_SUBSCR 315
+#define _BINARY_SUBSCR 316
+#define _SPECIALIZE_STORE_SUBSCR 317
+#define _STORE_SUBSCR 318
+#define _POP_FRAME 319
+#define _SPECIALIZE_SEND 320
+#define _SEND 321
+#define _SPECIALIZE_UNPACK_SEQUENCE 322
+#define _UNPACK_SEQUENCE 323
+#define _SPECIALIZE_STORE_ATTR 324
+#define _STORE_ATTR 325
+#define _SPECIALIZE_LOAD_GLOBAL 326
+#define _LOAD_GLOBAL 327
+#define _GUARD_GLOBALS_VERSION 328
+#define _GUARD_BUILTINS_VERSION 329
+#define _LOAD_GLOBAL_MODULE 330
+#define _LOAD_GLOBAL_BUILTINS 331
+#define _SPECIALIZE_LOAD_SUPER_ATTR 332
+#define _LOAD_SUPER_ATTR 333
+#define _SPECIALIZE_LOAD_ATTR 334
+#define _LOAD_ATTR 335
+#define _GUARD_TYPE_VERSION 336
+#define _CHECK_MANAGED_OBJECT_HAS_VALUES 337
+#define _LOAD_ATTR_INSTANCE_VALUE 338
+#define _CHECK_ATTR_MODULE 339
+#define _LOAD_ATTR_MODULE 340
+#define _CHECK_ATTR_WITH_HINT 341
+#define _LOAD_ATTR_WITH_HINT 342
+#define _LOAD_ATTR_SLOT 343
+#define _CHECK_ATTR_CLASS 344
+#define _LOAD_ATTR_CLASS 345
+#define _GUARD_DORV_VALUES 346
+#define _STORE_ATTR_INSTANCE_VALUE 347
+#define _STORE_ATTR_SLOT 348
+#define _SPECIALIZE_COMPARE_OP 349
+#define _COMPARE_OP 350
+#define _POP_JUMP_IF_FALSE 351
+#define _POP_JUMP_IF_TRUE 352
+#define _IS_NONE 353
+#define _SPECIALIZE_FOR_ITER 354
+#define _FOR_ITER 355
+#define _FOR_ITER_TIER_TWO 356
+#define _ITER_CHECK_LIST 357
+#define _ITER_JUMP_LIST 358
+#define _GUARD_NOT_EXHAUSTED_LIST 359
+#define _ITER_NEXT_LIST 360
+#define _ITER_CHECK_TUPLE 361
+#define _ITER_JUMP_TUPLE 362
+#define _GUARD_NOT_EXHAUSTED_TUPLE 363
+#define _ITER_NEXT_TUPLE 364
+#define _ITER_CHECK_RANGE 365
+#define _ITER_JUMP_RANGE 366
+#define _GUARD_NOT_EXHAUSTED_RANGE 367
+#define _ITER_NEXT_RANGE 368
+#define _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT 369
+#define _GUARD_KEYS_VERSION 370
+#define _LOAD_ATTR_METHOD_WITH_VALUES 371
+#define _LOAD_ATTR_METHOD_NO_DICT 372
+#define _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES 373
+#define _LOAD_ATTR_NONDESCRIPTOR_NO_DICT 374
+#define _CHECK_ATTR_METHOD_LAZY_DICT 375
+#define _LOAD_ATTR_METHOD_LAZY_DICT 376
+#define _SPECIALIZE_CALL 377
+#define _CALL 378
+#define _CHECK_CALL_BOUND_METHOD_EXACT_ARGS 379
+#define _INIT_CALL_BOUND_METHOD_EXACT_ARGS 380
+#define _CHECK_PEP_523 381
+#define _CHECK_FUNCTION_EXACT_ARGS 382
+#define _CHECK_STACK_SPACE 383
+#define _INIT_CALL_PY_EXACT_ARGS 384
+#define _PUSH_FRAME 385
+#define _SPECIALIZE_BINARY_OP 386
+#define _BINARY_OP 387
+#define _GUARD_IS_TRUE_POP 388
+#define _GUARD_IS_FALSE_POP 389
+#define _GUARD_IS_NONE_POP 390
+#define _GUARD_IS_NOT_NONE_POP 391
+#define _JUMP_TO_TOP 392
+#define _SAVE_RETURN_OFFSET 393
+#define _INSERT 394
+#define _CHECK_VALIDITY 395
+
+extern int _PyOpcode_num_popped(int opcode, int oparg, bool jump);
+#ifdef NEED_OPCODE_METADATA
+int _PyOpcode_num_popped(int opcode, int oparg, bool jump)  {
+    switch(opcode) {
+        case NOP:
+            return 0;
+        case RESUME:
+            return 0;
+        case RESUME_CHECK:
+            return 0;
+        case INSTRUMENTED_RESUME:
+            return 0;
+        case LOAD_CLOSURE:
+            return 0;
+        case LOAD_FAST_CHECK:
+            return 0;
+        case LOAD_FAST:
+            return 0;
+        case LOAD_FAST_AND_CLEAR:
+            return 0;
+        case LOAD_FAST_LOAD_FAST:
+            return 0;
+        case LOAD_CONST:
+            return 0;
+        case STORE_FAST:
+            return 1;
+        case STORE_FAST_MAYBE_NULL:
+            return 1;
+        case STORE_FAST_LOAD_FAST:
+            return 1;
+        case STORE_FAST_STORE_FAST:
+            return 2;
+        case POP_TOP:
+            return 1;
+        case PUSH_NULL:
+            return 0;
+        case END_FOR:
+            return 2;
+        case INSTRUMENTED_END_FOR:
+            return 2;
+        case END_SEND:
+            return 2;
+        case INSTRUMENTED_END_SEND:
+            return 2;
+        case UNARY_NEGATIVE:
+            return 1;
+        case UNARY_NOT:
+            return 1;
+        case _SPECIALIZE_TO_BOOL:
+            return 1;
+        case _TO_BOOL:
+            return 1;
+        case TO_BOOL:
+            return 1;
+        case TO_BOOL_BOOL:
+            return 1;
+        case TO_BOOL_INT:
+            return 1;
+        case TO_BOOL_LIST:
+            return 1;
+        case TO_BOOL_NONE:
+            return 1;
+        case TO_BOOL_STR:
+            return 1;
+        case TO_BOOL_ALWAYS_TRUE:
+            return 1;
+        case UNARY_INVERT:
+            return 1;
+        case _GUARD_BOTH_INT:
+            return 2;
+        case _BINARY_OP_MULTIPLY_INT:
+            return 2;
+        case _BINARY_OP_ADD_INT:
+            return 2;
+        case _BINARY_OP_SUBTRACT_INT:
+            return 2;
+        case BINARY_OP_MULTIPLY_INT:
+            return 2;
+        case BINARY_OP_ADD_INT:
+            return 2;
+        case BINARY_OP_SUBTRACT_INT:
+            return 2;
+        case _GUARD_BOTH_FLOAT:
+            return 2;
+        case _BINARY_OP_MULTIPLY_FLOAT:
+            return 2;
+        case _BINARY_OP_ADD_FLOAT:
+            return 2;
+        case _BINARY_OP_SUBTRACT_FLOAT:
+            return 2;
+        case BINARY_OP_MULTIPLY_FLOAT:
+            return 2;
+        case BINARY_OP_ADD_FLOAT:
+            return 2;
+        case BINARY_OP_SUBTRACT_FLOAT:
+            return 2;
+        case _GUARD_BOTH_UNICODE:
+            return 2;
+        case _BINARY_OP_ADD_UNICODE:
+            return 2;
+        case BINARY_OP_ADD_UNICODE:
+            return 2;
+        case _BINARY_OP_INPLACE_ADD_UNICODE:
+            return 2;
+        case BINARY_OP_INPLACE_ADD_UNICODE:
+            return 2;
+        case _SPECIALIZE_BINARY_SUBSCR:
+            return 2;
+        case _BINARY_SUBSCR:
+            return 2;
+        case BINARY_SUBSCR:
+            return 2;
+        case BINARY_SLICE:
+            return 3;
+        case STORE_SLICE:
+            return 4;
+        case BINARY_SUBSCR_LIST_INT:
+            return 2;
+        case BINARY_SUBSCR_STR_INT:
+            return 2;
+        case BINARY_SUBSCR_TUPLE_INT:
+            return 2;
+        case BINARY_SUBSCR_DICT:
+            return 2;
+        case BINARY_SUBSCR_GETITEM:
+            return 2;
+        case LIST_APPEND:
+            return (oparg-1) + 2;
+        case SET_ADD:
+            return (oparg-1) + 2;
+        case _SPECIALIZE_STORE_SUBSCR:
+            return 2;
+        case _STORE_SUBSCR:
+            return 3;
+        case STORE_SUBSCR:
+            return 3;
+        case STORE_SUBSCR_LIST_INT:
+            return 3;
+        case STORE_SUBSCR_DICT:
+            return 3;
+        case DELETE_SUBSCR:
+            return 2;
+        case CALL_INTRINSIC_1:
+            return 1;
+        case CALL_INTRINSIC_2:
+            return 2;
+        case RAISE_VARARGS:
+            return oparg;
+        case INTERPRETER_EXIT:
+            return 1;
+        case _POP_FRAME:
+            return 1;
+        case RETURN_VALUE:
+            return 1;
+        case INSTRUMENTED_RETURN_VALUE:
+            return 1;
+        case RETURN_CONST:
+            return 0;
+        case INSTRUMENTED_RETURN_CONST:
+            return 0;
+        case GET_AITER:
+            return 1;
+        case GET_ANEXT:
+            return 1;
+        case GET_AWAITABLE:
+            return 1;
+        case _SPECIALIZE_SEND:
+            return 2;
+        case _SEND:
+            return 2;
+        case SEND:
+            return 2;
+        case SEND_GEN:
+            return 2;
+        case INSTRUMENTED_YIELD_VALUE:
+            return 1;
+        case YIELD_VALUE:
+            return 1;
+        case POP_EXCEPT:
+            return 1;
+        case RERAISE:
+            return oparg + 1;
+        case END_ASYNC_FOR:
+            return 2;
+        case CLEANUP_THROW:
+            return 3;
+        case LOAD_ASSERTION_ERROR:
+            return 0;
+        case LOAD_BUILD_CLASS:
+            return 0;
+        case STORE_NAME:
+            return 1;
+        case DELETE_NAME:
+            return 0;
+        case _SPECIALIZE_UNPACK_SEQUENCE:
+            return 1;
+        case _UNPACK_SEQUENCE:
+            return 1;
+        case UNPACK_SEQUENCE:
+            return 1;
+        case UNPACK_SEQUENCE_TWO_TUPLE:
+            return 1;
+        case UNPACK_SEQUENCE_TUPLE:
+            return 1;
+        case UNPACK_SEQUENCE_LIST:
+            return 1;
+        case UNPACK_EX:
+            return 1;
+        case _SPECIALIZE_STORE_ATTR:
+            return 1;
+        case _STORE_ATTR:
+            return 2;
+        case STORE_ATTR:
+            return 2;
+        case DELETE_ATTR:
+            return 1;
+        case STORE_GLOBAL:
+            return 1;
+        case DELETE_GLOBAL:
+            return 0;
+        case LOAD_LOCALS:
+            return 0;
+        case LOAD_FROM_DICT_OR_GLOBALS:
+            return 1;
+        case LOAD_NAME:
+            return 0;
+        case _SPECIALIZE_LOAD_GLOBAL:
+            return 0;
+        case _LOAD_GLOBAL:
+            return 0;
+        case LOAD_GLOBAL:
+            return 0;
+        case _GUARD_GLOBALS_VERSION:
+            return 0;
+        case _GUARD_BUILTINS_VERSION:
+            return 0;
+        case _LOAD_GLOBAL_MODULE:
+            return 0;
+        case _LOAD_GLOBAL_BUILTINS:
+            return 0;
+        case LOAD_GLOBAL_MODULE:
+            return 0;
+        case LOAD_GLOBAL_BUILTIN:
+            return 0;
+        case DELETE_FAST:
+            return 0;
+        case MAKE_CELL:
+            return 0;
+        case DELETE_DEREF:
+            return 0;
+        case LOAD_FROM_DICT_OR_DEREF:
+            return 1;
+        case LOAD_DEREF:
+            return 0;
+        case STORE_DEREF:
+            return 1;
+        case COPY_FREE_VARS:
+            return 0;
+        case BUILD_STRING:
+            return oparg;
+        case BUILD_TUPLE:
+            return oparg;
+        case BUILD_LIST:
+            return oparg;
+        case LIST_EXTEND:
+            return (oparg-1) + 2;
+        case SET_UPDATE:
+            return (oparg-1) + 2;
+        case BUILD_SET:
+            return oparg;
+        case BUILD_MAP:
+            return oparg*2;
+        case SETUP_ANNOTATIONS:
+            return 0;
+        case BUILD_CONST_KEY_MAP:
+            return oparg + 1;
+        case DICT_UPDATE:
+            return (oparg - 1) + 2;
+        case DICT_MERGE:
+            return (oparg - 1) + 5;
+        case MAP_ADD:
+            return (oparg - 1) + 3;
+        case INSTRUMENTED_LOAD_SUPER_ATTR:
+            return 3;
+        case _SPECIALIZE_LOAD_SUPER_ATTR:
+            return 3;
+        case _LOAD_SUPER_ATTR:
+            return 3;
+        case LOAD_SUPER_ATTR:
+            return 3;
+        case LOAD_SUPER_METHOD:
+            return 3;
+        case LOAD_ZERO_SUPER_METHOD:
+            return 3;
+        case LOAD_ZERO_SUPER_ATTR:
+            return 3;
+        case LOAD_SUPER_ATTR_ATTR:
+            return 3;
+        case LOAD_SUPER_ATTR_METHOD:
+            return 3;
+        case _SPECIALIZE_LOAD_ATTR:
+            return 1;
+        case _LOAD_ATTR:
+            return 1;
+        case LOAD_ATTR:
+            return 1;
+        case LOAD_METHOD:
+            return 1;
+        case _GUARD_TYPE_VERSION:
+            return 1;
+        case _CHECK_MANAGED_OBJECT_HAS_VALUES:
+            return 1;
+        case _LOAD_ATTR_INSTANCE_VALUE:
+            return 1;
+        case LOAD_ATTR_INSTANCE_VALUE:
+            return 1;
+        case _CHECK_ATTR_MODULE:
+            return 1;
+        case _LOAD_ATTR_MODULE:
+            return 1;
+        case LOAD_ATTR_MODULE:
+            return 1;
+        case _CHECK_ATTR_WITH_HINT:
+            return 1;
+        case _LOAD_ATTR_WITH_HINT:
+            return 1;
+        case LOAD_ATTR_WITH_HINT:
+            return 1;
+        case _LOAD_ATTR_SLOT:
+            return 1;
+        case LOAD_ATTR_SLOT:
+            return 1;
+        case _CHECK_ATTR_CLASS:
+            return 1;
+        case _LOAD_ATTR_CLASS:
+            return 1;
+        case LOAD_ATTR_CLASS:
+            return 1;
+        case LOAD_ATTR_PROPERTY:
+            return 1;
+        case LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN:
+            return 1;
+        case _GUARD_DORV_VALUES:
+            return 1;
+        case _STORE_ATTR_INSTANCE_VALUE:
+            return 2;
+        case STORE_ATTR_INSTANCE_VALUE:
+            return 2;
+        case STORE_ATTR_WITH_HINT:
+            return 2;
+        case _STORE_ATTR_SLOT:
+            return 2;
+        case STORE_ATTR_SLOT:
+            return 2;
+        case _SPECIALIZE_COMPARE_OP:
+            return 2;
+        case _COMPARE_OP:
+            return 2;
+        case COMPARE_OP:
+            return 2;
+        case COMPARE_OP_FLOAT:
+            return 2;
+        case COMPARE_OP_INT:
+            return 2;
+        case COMPARE_OP_STR:
+            return 2;
+        case IS_OP:
+            return 2;
+        case CONTAINS_OP:
+            return 2;
+        case CHECK_EG_MATCH:
+            return 2;
+        case CHECK_EXC_MATCH:
+            return 2;
+        case IMPORT_NAME:
+            return 2;
+        case IMPORT_FROM:
+            return 1;
+        case JUMP_FORWARD:
+            return 0;
+        case JUMP_BACKWARD:
+            return 0;
+        case JUMP:
+            return 0;
+        case JUMP_NO_INTERRUPT:
+            return 0;
+        case ENTER_EXECUTOR:
+            return 0;
+        case _POP_JUMP_IF_FALSE:
+            return 1;
+        case _POP_JUMP_IF_TRUE:
+            return 1;
+        case _IS_NONE:
+            return 1;
+        case POP_JUMP_IF_TRUE:
+            return 1;
+        case POP_JUMP_IF_FALSE:
+            return 1;
+        case POP_JUMP_IF_NONE:
+            return 1;
+        case POP_JUMP_IF_NOT_NONE:
+            return 1;
+        case JUMP_BACKWARD_NO_INTERRUPT:
+            return 0;
+        case GET_LEN:
+            return 1;
+        case MATCH_CLASS:
+            return 3;
+        case MATCH_MAPPING:
+            return 1;
+        case MATCH_SEQUENCE:
+            return 1;
+        case MATCH_KEYS:
+            return 2;
+        case GET_ITER:
+            return 1;
+        case GET_YIELD_FROM_ITER:
+            return 1;
+        case _SPECIALIZE_FOR_ITER:
+            return 1;
+        case _FOR_ITER:
+            return 1;
+        case _FOR_ITER_TIER_TWO:
+            return 1;
+        case FOR_ITER:
+            return 1;
+        case INSTRUMENTED_FOR_ITER:
+            return 0;
+        case _ITER_CHECK_LIST:
+            return 1;
+        case _ITER_JUMP_LIST:
+            return 1;
+        case _GUARD_NOT_EXHAUSTED_LIST:
+            return 1;
+        case _ITER_NEXT_LIST:
+            return 1;
+        case FOR_ITER_LIST:
+            return 1;
+        case _ITER_CHECK_TUPLE:
+            return 1;
+        case _ITER_JUMP_TUPLE:
+            return 1;
+        case _GUARD_NOT_EXHAUSTED_TUPLE:
+            return 1;
+        case _ITER_NEXT_TUPLE:
+            return 1;
+        case FOR_ITER_TUPLE:
+            return 1;
+        case _ITER_CHECK_RANGE:
+            return 1;
+        case _ITER_JUMP_RANGE:
+            return 1;
+        case _GUARD_NOT_EXHAUSTED_RANGE:
+            return 1;
+        case _ITER_NEXT_RANGE:
+            return 1;
+        case FOR_ITER_RANGE:
+            return 1;
+        case FOR_ITER_GEN:
+            return 1;
+        case BEFORE_ASYNC_WITH:
+            return 1;
+        case BEFORE_WITH:
+            return 1;
+        case WITH_EXCEPT_START:
+            return 4;
+        case SETUP_FINALLY:
+            return 0;
+        case SETUP_CLEANUP:
+            return 0;
+        case SETUP_WITH:
+            return 0;
+        case POP_BLOCK:
+            return 0;
+        case PUSH_EXC_INFO:
+            return 1;
+        case _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT:
+            return 1;
+        case _GUARD_KEYS_VERSION:
+            return 1;
+        case _LOAD_ATTR_METHOD_WITH_VALUES:
+            return 1;
+        case LOAD_ATTR_METHOD_WITH_VALUES:
+            return 1;
+        case _LOAD_ATTR_METHOD_NO_DICT:
+            return 1;
+        case LOAD_ATTR_METHOD_NO_DICT:
+            return 1;
+        case _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES:
+            return 1;
+        case LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES:
+            return 1;
+        case _LOAD_ATTR_NONDESCRIPTOR_NO_DICT:
+            return 1;
+        case LOAD_ATTR_NONDESCRIPTOR_NO_DICT:
+            return 1;
+        case _CHECK_ATTR_METHOD_LAZY_DICT:
+            return 1;
+        case _LOAD_ATTR_METHOD_LAZY_DICT:
+            return 1;
+        case LOAD_ATTR_METHOD_LAZY_DICT:
+            return 1;
+        case INSTRUMENTED_CALL:
+            return 0;
+        case _SPECIALIZE_CALL:
+            return oparg + 2;
+        case _CALL:
+            return oparg + 2;
+        case CALL:
+            return oparg + 2;
+        case _CHECK_CALL_BOUND_METHOD_EXACT_ARGS:
+            return oparg + 2;
+        case _INIT_CALL_BOUND_METHOD_EXACT_ARGS:
+            return oparg + 2;
+        case _CHECK_PEP_523:
+            return 0;
+        case _CHECK_FUNCTION_EXACT_ARGS:
+            return oparg + 2;
+        case _CHECK_STACK_SPACE:
+            return oparg + 2;
+        case _INIT_CALL_PY_EXACT_ARGS:
+            return oparg + 2;
+        case _PUSH_FRAME:
+            return 1;
+        case CALL_BOUND_METHOD_EXACT_ARGS:
+            return oparg + 2;
+        case CALL_PY_EXACT_ARGS:
+            return oparg + 2;
+        case CALL_PY_WITH_DEFAULTS:
+            return oparg + 2;
+        case CALL_TYPE_1:
+            return oparg + 2;
+        case CALL_STR_1:
+            return oparg + 2;
+        case CALL_TUPLE_1:
+            return oparg + 2;
+        case CALL_ALLOC_AND_ENTER_INIT:
+            return oparg + 2;
+        case EXIT_INIT_CHECK:
+            return 1;
+        case CALL_BUILTIN_CLASS:
+            return oparg + 2;
+        case CALL_BUILTIN_O:
+            return oparg + 2;
+        case CALL_BUILTIN_FAST:
+            return oparg + 2;
+        case CALL_BUILTIN_FAST_WITH_KEYWORDS:
+            return oparg + 2;
+        case CALL_LEN:
+            return oparg + 2;
+        case CALL_ISINSTANCE:
+            return oparg + 2;
+        case CALL_LIST_APPEND:
+            return oparg + 2;
+        case CALL_METHOD_DESCRIPTOR_O:
+            return oparg + 2;
+        case CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS:
+            return oparg + 2;
+        case CALL_METHOD_DESCRIPTOR_NOARGS:
+            return oparg + 2;
+        case CALL_METHOD_DESCRIPTOR_FAST:
+            return oparg + 2;
+        case INSTRUMENTED_CALL_KW:
+            return 0;
+        case CALL_KW:
+            return oparg + 3;
+        case INSTRUMENTED_CALL_FUNCTION_EX:
+            return 0;
+        case CALL_FUNCTION_EX:
+            return ((oparg & 1) ? 1 : 0) + 3;
+        case MAKE_FUNCTION:
+            return 1;
+        case SET_FUNCTION_ATTRIBUTE:
+            return 2;
+        case RETURN_GENERATOR:
+            return 0;
+        case BUILD_SLICE:
+            return ((oparg == 3) ? 1 : 0) + 2;
+        case CONVERT_VALUE:
+            return 1;
+        case FORMAT_SIMPLE:
+            return 1;
+        case FORMAT_WITH_SPEC:
+            return 2;
+        case COPY:
+            return (oparg-1) + 1;
+        case _SPECIALIZE_BINARY_OP:
+            return 2;
+        case _BINARY_OP:
+            return 2;
+        case BINARY_OP:
+            return 2;
+        case SWAP:
+            return (oparg-2) + 2;
+        case INSTRUMENTED_INSTRUCTION:
+            return 0;
+        case INSTRUMENTED_JUMP_FORWARD:
+            return 0;
+        case INSTRUMENTED_JUMP_BACKWARD:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_TRUE:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_FALSE:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_NONE:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_NOT_NONE:
+            return 0;
+        case EXTENDED_ARG:
+            return 0;
+        case CACHE:
+            return 0;
+        case RESERVED:
+            return 0;
+        case _GUARD_IS_TRUE_POP:
+            return 1;
+        case _GUARD_IS_FALSE_POP:
+            return 1;
+        case _GUARD_IS_NONE_POP:
+            return 1;
+        case _GUARD_IS_NOT_NONE_POP:
+            return 1;
+        case _JUMP_TO_TOP:
+            return 0;
+        case _SET_IP:
+            return 0;
+        case _SAVE_RETURN_OFFSET:
+            return 0;
+        case _EXIT_TRACE:
+            return 0;
+        case _INSERT:
+            return oparg + 1;
+        case _CHECK_VALIDITY:
+            return 0;
+        default:
+            return -1;
+    }
+}
+#endif // NEED_OPCODE_METADATA
+
+extern int _PyOpcode_num_pushed(int opcode, int oparg, bool jump);
+#ifdef NEED_OPCODE_METADATA
+int _PyOpcode_num_pushed(int opcode, int oparg, bool jump)  {
+    switch(opcode) {
+        case NOP:
+            return 0;
+        case RESUME:
+            return 0;
+        case RESUME_CHECK:
+            return 0;
+        case INSTRUMENTED_RESUME:
+            return 0;
+        case LOAD_CLOSURE:
+            return 1;
+        case LOAD_FAST_CHECK:
+            return 1;
+        case LOAD_FAST:
+            return 1;
+        case LOAD_FAST_AND_CLEAR:
+            return 1;
+        case LOAD_FAST_LOAD_FAST:
+            return 2;
+        case LOAD_CONST:
+            return 1;
+        case STORE_FAST:
+            return 0;
+        case STORE_FAST_MAYBE_NULL:
+            return 0;
+        case STORE_FAST_LOAD_FAST:
+            return 1;
+        case STORE_FAST_STORE_FAST:
+            return 0;
+        case POP_TOP:
+            return 0;
+        case PUSH_NULL:
+            return 1;
+        case END_FOR:
+            return 0;
+        case INSTRUMENTED_END_FOR:
+            return 0;
+        case END_SEND:
+            return 1;
+        case INSTRUMENTED_END_SEND:
+            return 1;
+        case UNARY_NEGATIVE:
+            return 1;
+        case UNARY_NOT:
+            return 1;
+        case _SPECIALIZE_TO_BOOL:
+            return 1;
+        case _TO_BOOL:
+            return 1;
+        case TO_BOOL:
+            return 1;
+        case TO_BOOL_BOOL:
+            return 1;
+        case TO_BOOL_INT:
+            return 1;
+        case TO_BOOL_LIST:
+            return 1;
+        case TO_BOOL_NONE:
+            return 1;
+        case TO_BOOL_STR:
+            return 1;
+        case TO_BOOL_ALWAYS_TRUE:
+            return 1;
+        case UNARY_INVERT:
+            return 1;
+        case _GUARD_BOTH_INT:
+            return 2;
+        case _BINARY_OP_MULTIPLY_INT:
+            return 1;
+        case _BINARY_OP_ADD_INT:
+            return 1;
+        case _BINARY_OP_SUBTRACT_INT:
+            return 1;
+        case BINARY_OP_MULTIPLY_INT:
+            return 1;
+        case BINARY_OP_ADD_INT:
+            return 1;
+        case BINARY_OP_SUBTRACT_INT:
+            return 1;
+        case _GUARD_BOTH_FLOAT:
+            return 2;
+        case _BINARY_OP_MULTIPLY_FLOAT:
+            return 1;
+        case _BINARY_OP_ADD_FLOAT:
+            return 1;
+        case _BINARY_OP_SUBTRACT_FLOAT:
+            return 1;
+        case BINARY_OP_MULTIPLY_FLOAT:
+            return 1;
+        case BINARY_OP_ADD_FLOAT:
+            return 1;
+        case BINARY_OP_SUBTRACT_FLOAT:
+            return 1;
+        case _GUARD_BOTH_UNICODE:
+            return 2;
+        case _BINARY_OP_ADD_UNICODE:
+            return 1;
+        case BINARY_OP_ADD_UNICODE:
+            return 1;
+        case _BINARY_OP_INPLACE_ADD_UNICODE:
+            return 0;
+        case BINARY_OP_INPLACE_ADD_UNICODE:
+            return 0;
+        case _SPECIALIZE_BINARY_SUBSCR:
+            return 2;
+        case _BINARY_SUBSCR:
+            return 1;
+        case BINARY_SUBSCR:
+            return 1;
+        case BINARY_SLICE:
+            return 1;
+        case STORE_SLICE:
+            return 0;
+        case BINARY_SUBSCR_LIST_INT:
+            return 1;
+        case BINARY_SUBSCR_STR_INT:
+            return 1;
+        case BINARY_SUBSCR_TUPLE_INT:
+            return 1;
+        case BINARY_SUBSCR_DICT:
+            return 1;
+        case BINARY_SUBSCR_GETITEM:
+            return 1;
+        case LIST_APPEND:
+            return (oparg-1) + 1;
+        case SET_ADD:
+            return (oparg-1) + 1;
+        case _SPECIALIZE_STORE_SUBSCR:
+            return 2;
+        case _STORE_SUBSCR:
+            return 0;
+        case STORE_SUBSCR:
+            return 0;
+        case STORE_SUBSCR_LIST_INT:
+            return 0;
+        case STORE_SUBSCR_DICT:
+            return 0;
+        case DELETE_SUBSCR:
+            return 0;
+        case CALL_INTRINSIC_1:
+            return 1;
+        case CALL_INTRINSIC_2:
+            return 1;
+        case RAISE_VARARGS:
+            return 0;
+        case INTERPRETER_EXIT:
+            return 0;
+        case _POP_FRAME:
+            return 0;
+        case RETURN_VALUE:
+            return 0;
+        case INSTRUMENTED_RETURN_VALUE:
+            return 0;
+        case RETURN_CONST:
+            return 0;
+        case INSTRUMENTED_RETURN_CONST:
+            return 0;
+        case GET_AITER:
+            return 1;
+        case GET_ANEXT:
+            return 2;
+        case GET_AWAITABLE:
+            return 1;
+        case _SPECIALIZE_SEND:
+            return 2;
+        case _SEND:
+            return 2;
+        case SEND:
+            return 2;
+        case SEND_GEN:
+            return 2;
+        case INSTRUMENTED_YIELD_VALUE:
+            return 1;
+        case YIELD_VALUE:
+            return 1;
+        case POP_EXCEPT:
+            return 0;
+        case RERAISE:
+            return oparg;
+        case END_ASYNC_FOR:
+            return 0;
+        case CLEANUP_THROW:
+            return 2;
+        case LOAD_ASSERTION_ERROR:
+            return 1;
+        case LOAD_BUILD_CLASS:
+            return 1;
+        case STORE_NAME:
+            return 0;
+        case DELETE_NAME:
+            return 0;
+        case _SPECIALIZE_UNPACK_SEQUENCE:
+            return 1;
+        case _UNPACK_SEQUENCE:
+            return oparg;
+        case UNPACK_SEQUENCE:
+            return oparg;
+        case UNPACK_SEQUENCE_TWO_TUPLE:
+            return oparg;
+        case UNPACK_SEQUENCE_TUPLE:
+            return oparg;
+        case UNPACK_SEQUENCE_LIST:
+            return oparg;
+        case UNPACK_EX:
+            return (oparg & 0xFF) + (oparg >> 8) + 1;
+        case _SPECIALIZE_STORE_ATTR:
+            return 1;
+        case _STORE_ATTR:
+            return 0;
+        case STORE_ATTR:
+            return 0;
+        case DELETE_ATTR:
+            return 0;
+        case STORE_GLOBAL:
+            return 0;
+        case DELETE_GLOBAL:
+            return 0;
+        case LOAD_LOCALS:
+            return 1;
+        case LOAD_FROM_DICT_OR_GLOBALS:
+            return 1;
+        case LOAD_NAME:
+            return 1;
+        case _SPECIALIZE_LOAD_GLOBAL:
+            return 0;
+        case _LOAD_GLOBAL:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_GLOBAL:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case _GUARD_GLOBALS_VERSION:
+            return 0;
+        case _GUARD_BUILTINS_VERSION:
+            return 0;
+        case _LOAD_GLOBAL_MODULE:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case _LOAD_GLOBAL_BUILTINS:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_GLOBAL_MODULE:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_GLOBAL_BUILTIN:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case DELETE_FAST:
+            return 0;
+        case MAKE_CELL:
+            return 0;
+        case DELETE_DEREF:
+            return 0;
+        case LOAD_FROM_DICT_OR_DEREF:
+            return 1;
+        case LOAD_DEREF:
+            return 1;
+        case STORE_DEREF:
+            return 0;
+        case COPY_FREE_VARS:
+            return 0;
+        case BUILD_STRING:
+            return 1;
+        case BUILD_TUPLE:
+            return 1;
+        case BUILD_LIST:
+            return 1;
+        case LIST_EXTEND:
+            return (oparg-1) + 1;
+        case SET_UPDATE:
+            return (oparg-1) + 1;
+        case BUILD_SET:
+            return 1;
+        case BUILD_MAP:
+            return 1;
+        case SETUP_ANNOTATIONS:
+            return 0;
+        case BUILD_CONST_KEY_MAP:
+            return 1;
+        case DICT_UPDATE:
+            return (oparg - 1) + 1;
+        case DICT_MERGE:
+            return (oparg - 1) + 4;
+        case MAP_ADD:
+            return (oparg - 1) + 1;
+        case INSTRUMENTED_LOAD_SUPER_ATTR:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case _SPECIALIZE_LOAD_SUPER_ATTR:
+            return 3;
+        case _LOAD_SUPER_ATTR:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_SUPER_ATTR:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_SUPER_METHOD:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_ZERO_SUPER_METHOD:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_ZERO_SUPER_ATTR:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_SUPER_ATTR_ATTR:
+            return 1;
+        case LOAD_SUPER_ATTR_METHOD:
+            return 2;
+        case _SPECIALIZE_LOAD_ATTR:
+            return 1;
+        case _LOAD_ATTR:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_ATTR:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_METHOD:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case _GUARD_TYPE_VERSION:
+            return 1;
+        case _CHECK_MANAGED_OBJECT_HAS_VALUES:
+            return 1;
+        case _LOAD_ATTR_INSTANCE_VALUE:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_ATTR_INSTANCE_VALUE:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case _CHECK_ATTR_MODULE:
+            return 1;
+        case _LOAD_ATTR_MODULE:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_ATTR_MODULE:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case _CHECK_ATTR_WITH_HINT:
+            return 1;
+        case _LOAD_ATTR_WITH_HINT:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_ATTR_WITH_HINT:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case _LOAD_ATTR_SLOT:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_ATTR_SLOT:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case _CHECK_ATTR_CLASS:
+            return 1;
+        case _LOAD_ATTR_CLASS:
+            return ((oparg & 1) ? 1 : 0) + 1;
+        case LOAD_ATTR_CLASS:
+            return (oparg & 1 ? 1 : 0) + 1;
+        case LOAD_ATTR_PROPERTY:
+            return 1;
+        case LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN:
+            return 1;
+        case _GUARD_DORV_VALUES:
+            return 1;
+        case _STORE_ATTR_INSTANCE_VALUE:
+            return 0;
+        case STORE_ATTR_INSTANCE_VALUE:
+            return 0;
+        case STORE_ATTR_WITH_HINT:
+            return 0;
+        case _STORE_ATTR_SLOT:
+            return 0;
+        case STORE_ATTR_SLOT:
+            return 0;
+        case _SPECIALIZE_COMPARE_OP:
+            return 2;
+        case _COMPARE_OP:
+            return 1;
+        case COMPARE_OP:
+            return 1;
+        case COMPARE_OP_FLOAT:
+            return 1;
+        case COMPARE_OP_INT:
+            return 1;
+        case COMPARE_OP_STR:
+            return 1;
+        case IS_OP:
+            return 1;
+        case CONTAINS_OP:
+            return 1;
+        case CHECK_EG_MATCH:
+            return 2;
+        case CHECK_EXC_MATCH:
+            return 2;
+        case IMPORT_NAME:
+            return 1;
+        case IMPORT_FROM:
+            return 2;
+        case JUMP_FORWARD:
+            return 0;
+        case JUMP_BACKWARD:
+            return 0;
+        case JUMP:
+            return 0;
+        case JUMP_NO_INTERRUPT:
+            return 0;
+        case ENTER_EXECUTOR:
+            return 0;
+        case _POP_JUMP_IF_FALSE:
+            return 0;
+        case _POP_JUMP_IF_TRUE:
+            return 0;
+        case _IS_NONE:
+            return 1;
+        case POP_JUMP_IF_TRUE:
+            return 0;
+        case POP_JUMP_IF_FALSE:
+            return 0;
+        case POP_JUMP_IF_NONE:
+            return 0;
+        case POP_JUMP_IF_NOT_NONE:
+            return 0;
+        case JUMP_BACKWARD_NO_INTERRUPT:
+            return 0;
+        case GET_LEN:
+            return 2;
+        case MATCH_CLASS:
+            return 1;
+        case MATCH_MAPPING:
+            return 2;
+        case MATCH_SEQUENCE:
+            return 2;
+        case MATCH_KEYS:
+            return 3;
+        case GET_ITER:
+            return 1;
+        case GET_YIELD_FROM_ITER:
+            return 1;
+        case _SPECIALIZE_FOR_ITER:
+            return 1;
+        case _FOR_ITER:
+            return 2;
+        case _FOR_ITER_TIER_TWO:
+            return 2;
+        case FOR_ITER:
+            return 2;
+        case INSTRUMENTED_FOR_ITER:
+            return 0;
+        case _ITER_CHECK_LIST:
+            return 1;
+        case _ITER_JUMP_LIST:
+            return 1;
+        case _GUARD_NOT_EXHAUSTED_LIST:
+            return 1;
+        case _ITER_NEXT_LIST:
+            return 2;
+        case FOR_ITER_LIST:
+            return 2;
+        case _ITER_CHECK_TUPLE:
+            return 1;
+        case _ITER_JUMP_TUPLE:
+            return 1;
+        case _GUARD_NOT_EXHAUSTED_TUPLE:
+            return 1;
+        case _ITER_NEXT_TUPLE:
+            return 2;
+        case FOR_ITER_TUPLE:
+            return 2;
+        case _ITER_CHECK_RANGE:
+            return 1;
+        case _ITER_JUMP_RANGE:
+            return 1;
+        case _GUARD_NOT_EXHAUSTED_RANGE:
+            return 1;
+        case _ITER_NEXT_RANGE:
+            return 2;
+        case FOR_ITER_RANGE:
+            return 2;
+        case FOR_ITER_GEN:
+            return 2;
+        case BEFORE_ASYNC_WITH:
+            return 2;
+        case BEFORE_WITH:
+            return 2;
+        case WITH_EXCEPT_START:
+            return 5;
+        case SETUP_FINALLY:
+            return 0;
+        case SETUP_CLEANUP:
+            return 0;
+        case SETUP_WITH:
+            return 0;
+        case POP_BLOCK:
+            return 0;
+        case PUSH_EXC_INFO:
+            return 2;
+        case _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT:
+            return 1;
+        case _GUARD_KEYS_VERSION:
+            return 1;
+        case _LOAD_ATTR_METHOD_WITH_VALUES:
+            return 2;
+        case LOAD_ATTR_METHOD_WITH_VALUES:
+            return 2;
+        case _LOAD_ATTR_METHOD_NO_DICT:
+            return 2;
+        case LOAD_ATTR_METHOD_NO_DICT:
+            return 2;
+        case _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES:
+            return 1;
+        case LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES:
+            return 1;
+        case _LOAD_ATTR_NONDESCRIPTOR_NO_DICT:
+            return 1;
+        case LOAD_ATTR_NONDESCRIPTOR_NO_DICT:
+            return 1;
+        case _CHECK_ATTR_METHOD_LAZY_DICT:
+            return 1;
+        case _LOAD_ATTR_METHOD_LAZY_DICT:
+            return 2;
+        case LOAD_ATTR_METHOD_LAZY_DICT:
+            return 2;
+        case INSTRUMENTED_CALL:
+            return 0;
+        case _SPECIALIZE_CALL:
+            return oparg + 2;
+        case _CALL:
+            return 1;
+        case CALL:
+            return 1;
+        case _CHECK_CALL_BOUND_METHOD_EXACT_ARGS:
+            return oparg + 2;
+        case _INIT_CALL_BOUND_METHOD_EXACT_ARGS:
+            return oparg + 2;
+        case _CHECK_PEP_523:
+            return 0;
+        case _CHECK_FUNCTION_EXACT_ARGS:
+            return oparg + 2;
+        case _CHECK_STACK_SPACE:
+            return oparg + 2;
+        case _INIT_CALL_PY_EXACT_ARGS:
+            return 1;
+        case _PUSH_FRAME:
+            return 0;
+        case CALL_BOUND_METHOD_EXACT_ARGS:
+            return 0;
+        case CALL_PY_EXACT_ARGS:
+            return 0;
+        case CALL_PY_WITH_DEFAULTS:
+            return 1;
+        case CALL_TYPE_1:
+            return 1;
+        case CALL_STR_1:
+            return 1;
+        case CALL_TUPLE_1:
+            return 1;
+        case CALL_ALLOC_AND_ENTER_INIT:
+            return 1;
+        case EXIT_INIT_CHECK:
+            return 0;
+        case CALL_BUILTIN_CLASS:
+            return 1;
+        case CALL_BUILTIN_O:
+            return 1;
+        case CALL_BUILTIN_FAST:
+            return 1;
+        case CALL_BUILTIN_FAST_WITH_KEYWORDS:
+            return 1;
+        case CALL_LEN:
+            return 1;
+        case CALL_ISINSTANCE:
+            return 1;
+        case CALL_LIST_APPEND:
+            return 1;
+        case CALL_METHOD_DESCRIPTOR_O:
+            return 1;
+        case CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS:
+            return 1;
+        case CALL_METHOD_DESCRIPTOR_NOARGS:
+            return 1;
+        case CALL_METHOD_DESCRIPTOR_FAST:
+            return 1;
+        case INSTRUMENTED_CALL_KW:
+            return 0;
+        case CALL_KW:
+            return 1;
+        case INSTRUMENTED_CALL_FUNCTION_EX:
+            return 0;
+        case CALL_FUNCTION_EX:
+            return 1;
+        case MAKE_FUNCTION:
+            return 1;
+        case SET_FUNCTION_ATTRIBUTE:
+            return 1;
+        case RETURN_GENERATOR:
+            return 0;
+        case BUILD_SLICE:
+            return 1;
+        case CONVERT_VALUE:
+            return 1;
+        case FORMAT_SIMPLE:
+            return 1;
+        case FORMAT_WITH_SPEC:
+            return 1;
+        case COPY:
+            return (oparg-1) + 2;
+        case _SPECIALIZE_BINARY_OP:
+            return 2;
+        case _BINARY_OP:
+            return 1;
+        case BINARY_OP:
+            return 1;
+        case SWAP:
+            return (oparg-2) + 2;
+        case INSTRUMENTED_INSTRUCTION:
+            return 0;
+        case INSTRUMENTED_JUMP_FORWARD:
+            return 0;
+        case INSTRUMENTED_JUMP_BACKWARD:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_TRUE:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_FALSE:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_NONE:
+            return 0;
+        case INSTRUMENTED_POP_JUMP_IF_NOT_NONE:
+            return 0;
+        case EXTENDED_ARG:
+            return 0;
+        case CACHE:
+            return 0;
+        case RESERVED:
+            return 0;
+        case _GUARD_IS_TRUE_POP:
+            return 0;
+        case _GUARD_IS_FALSE_POP:
+            return 0;
+        case _GUARD_IS_NONE_POP:
+            return 0;
+        case _GUARD_IS_NOT_NONE_POP:
+            return 0;
+        case _JUMP_TO_TOP:
+            return 0;
+        case _SET_IP:
+            return 0;
+        case _SAVE_RETURN_OFFSET:
+            return 0;
+        case _EXIT_TRACE:
+            return 0;
+        case _INSERT:
+            return oparg + 1;
+        case _CHECK_VALIDITY:
+            return 0;
+        default:
+            return -1;
+    }
+}
+#endif // NEED_OPCODE_METADATA
+
+enum InstructionFormat {
+    INSTR_FMT_IB,
+    INSTR_FMT_IBC,
+    INSTR_FMT_IBC0,
+    INSTR_FMT_IBC00,
+    INSTR_FMT_IBC000,
+    INSTR_FMT_IBC0000000,
+    INSTR_FMT_IBC00000000,
+    INSTR_FMT_IX,
+    INSTR_FMT_IXC,
+    INSTR_FMT_IXC0,
+    INSTR_FMT_IXC00,
+    INSTR_FMT_IXC000,
+};
+
+#define IS_VALID_OPCODE(OP) \
+    (((OP) >= 0) && ((OP) < OPCODE_METADATA_SIZE) && \
+     (_PyOpcode_opcode_metadata[(OP)].valid_entry))
+
+#define HAS_ARG_FLAG (1)
+#define HAS_CONST_FLAG (2)
+#define HAS_NAME_FLAG (4)
+#define HAS_JUMP_FLAG (8)
+#define HAS_FREE_FLAG (16)
+#define HAS_LOCAL_FLAG (32)
+#define HAS_EVAL_BREAK_FLAG (64)
+#define HAS_DEOPT_FLAG (128)
+#define HAS_ERROR_FLAG (256)
+#define HAS_ESCAPES_FLAG (512)
+#define OPCODE_HAS_ARG(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_ARG_FLAG))
+#define OPCODE_HAS_CONST(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_CONST_FLAG))
+#define OPCODE_HAS_NAME(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_NAME_FLAG))
+#define OPCODE_HAS_JUMP(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_JUMP_FLAG))
+#define OPCODE_HAS_FREE(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_FREE_FLAG))
+#define OPCODE_HAS_LOCAL(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_LOCAL_FLAG))
+#define OPCODE_HAS_EVAL_BREAK(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_EVAL_BREAK_FLAG))
+#define OPCODE_HAS_DEOPT(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_DEOPT_FLAG))
+#define OPCODE_HAS_ERROR(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_ERROR_FLAG))
+#define OPCODE_HAS_ESCAPES(OP) (_PyOpcode_opcode_metadata[OP].flags & (HAS_ESCAPES_FLAG))
+
+struct opcode_metadata {
+    bool valid_entry;
+    enum InstructionFormat instr_format;
+    int flags;
+};
+
+struct opcode_macro_expansion {
+    int nuops;
+    struct { int16_t uop; int8_t size; int8_t offset; } uops[12];
+};
+
+#define OPARG_FULL 0
+#define OPARG_CACHE_1 1
+#define OPARG_CACHE_2 2
+#define OPARG_CACHE_4 4
+#define OPARG_TOP 5
+#define OPARG_BOTTOM 6
+#define OPARG_SAVE_RETURN_OFFSET 7
+
+#define OPCODE_METADATA_FLAGS(OP) (_PyOpcode_opcode_metadata[(OP)].flags & (HAS_ARG_FLAG | HAS_JUMP_FLAG))
+#define SAME_OPCODE_METADATA(OP1, OP2) \
+        (OPCODE_METADATA_FLAGS(OP1) == OPCODE_METADATA_FLAGS(OP2))
+
+#define OPCODE_METADATA_SIZE 512
+#define OPCODE_UOP_NAME_SIZE 512
+#define OPCODE_MACRO_EXPANSION_SIZE 256
+
+extern const struct opcode_metadata _PyOpcode_opcode_metadata[OPCODE_METADATA_SIZE];
+#ifdef NEED_OPCODE_METADATA
+const struct opcode_metadata _PyOpcode_opcode_metadata[OPCODE_METADATA_SIZE] = {
+    [NOP] = { true, INSTR_FMT_IX, 0 },
+    [RESUME] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [RESUME_CHECK] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [INSTRUMENTED_RESUME] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_CLOSURE] = { true, 0, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [LOAD_FAST_CHECK] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG | HAS_ERROR_FLAG },
+    [LOAD_FAST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [LOAD_FAST_AND_CLEAR] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [LOAD_FAST_LOAD_FAST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [LOAD_CONST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_CONST_FLAG },
+    [STORE_FAST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [STORE_FAST_MAYBE_NULL] = { true, 0, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [STORE_FAST_LOAD_FAST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [STORE_FAST_STORE_FAST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG },
+    [POP_TOP] = { true, INSTR_FMT_IX, 0 },
+    [PUSH_NULL] = { true, INSTR_FMT_IX, 0 },
+    [END_FOR] = { true, INSTR_FMT_IX, 0 },
+    [INSTRUMENTED_END_FOR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [END_SEND] = { true, INSTR_FMT_IX, 0 },
+    [INSTRUMENTED_END_SEND] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [UNARY_NEGATIVE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [UNARY_NOT] = { true, INSTR_FMT_IX, 0 },
+    [_SPECIALIZE_TO_BOOL] = { true, INSTR_FMT_IXC, HAS_ESCAPES_FLAG },
+    [_TO_BOOL] = { true, INSTR_FMT_IXC0, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [TO_BOOL] = { true, INSTR_FMT_IXC00, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [TO_BOOL_BOOL] = { true, INSTR_FMT_IXC00, HAS_DEOPT_FLAG },
+    [TO_BOOL_INT] = { true, INSTR_FMT_IXC00, HAS_DEOPT_FLAG },
+    [TO_BOOL_LIST] = { true, INSTR_FMT_IXC00, HAS_DEOPT_FLAG },
+    [TO_BOOL_NONE] = { true, INSTR_FMT_IXC00, HAS_DEOPT_FLAG },
+    [TO_BOOL_STR] = { true, INSTR_FMT_IXC00, HAS_DEOPT_FLAG },
+    [TO_BOOL_ALWAYS_TRUE] = { true, INSTR_FMT_IXC00, HAS_DEOPT_FLAG },
+    [UNARY_INVERT] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_GUARD_BOTH_INT] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_BINARY_OP_MULTIPLY_INT] = { true, INSTR_FMT_IXC, HAS_ERROR_FLAG },
+    [_BINARY_OP_ADD_INT] = { true, INSTR_FMT_IXC, HAS_ERROR_FLAG },
+    [_BINARY_OP_SUBTRACT_INT] = { true, INSTR_FMT_IXC, HAS_ERROR_FLAG },
+    [BINARY_OP_MULTIPLY_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ERROR_FLAG },
+    [BINARY_OP_ADD_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ERROR_FLAG },
+    [BINARY_OP_SUBTRACT_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ERROR_FLAG },
+    [_GUARD_BOTH_FLOAT] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_BINARY_OP_MULTIPLY_FLOAT] = { true, INSTR_FMT_IXC, 0 },
+    [_BINARY_OP_ADD_FLOAT] = { true, INSTR_FMT_IXC, 0 },
+    [_BINARY_OP_SUBTRACT_FLOAT] = { true, INSTR_FMT_IXC, 0 },
+    [BINARY_OP_MULTIPLY_FLOAT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [BINARY_OP_ADD_FLOAT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [BINARY_OP_SUBTRACT_FLOAT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [_GUARD_BOTH_UNICODE] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_BINARY_OP_ADD_UNICODE] = { true, INSTR_FMT_IXC, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BINARY_OP_ADD_UNICODE] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_BINARY_OP_INPLACE_ADD_UNICODE] = { true, INSTR_FMT_IXC, HAS_LOCAL_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BINARY_OP_INPLACE_ADD_UNICODE] = { true, INSTR_FMT_IXC, HAS_LOCAL_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_BINARY_SUBSCR] = { true, INSTR_FMT_IXC, HAS_ESCAPES_FLAG },
+    [_BINARY_SUBSCR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BINARY_SUBSCR] = { true, INSTR_FMT_IXC, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BINARY_SLICE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_SLICE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BINARY_SUBSCR_LIST_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [BINARY_SUBSCR_STR_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [BINARY_SUBSCR_TUPLE_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [BINARY_SUBSCR_DICT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BINARY_SUBSCR_GETITEM] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [LIST_APPEND] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG },
+    [SET_ADD] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_STORE_SUBSCR] = { true, INSTR_FMT_IXC, HAS_ESCAPES_FLAG },
+    [_STORE_SUBSCR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_SUBSCR] = { true, INSTR_FMT_IXC, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_SUBSCR_LIST_INT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_SUBSCR_DICT] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DELETE_SUBSCR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_INTRINSIC_1] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_INTRINSIC_2] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [RAISE_VARARGS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [INTERPRETER_EXIT] = { true, INSTR_FMT_IX, HAS_ESCAPES_FLAG },
+    [_POP_FRAME] = { true, INSTR_FMT_IX, HAS_ESCAPES_FLAG },
+    [RETURN_VALUE] = { true, INSTR_FMT_IX, HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_RETURN_VALUE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [RETURN_CONST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_CONST_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_RETURN_CONST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_CONST_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [GET_AITER] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [GET_ANEXT] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [GET_AWAITABLE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_SEND] = { true, INSTR_FMT_IXC, HAS_ESCAPES_FLAG },
+    [_SEND] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SEND] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SEND_GEN] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_YIELD_VALUE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [YIELD_VALUE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [POP_EXCEPT] = { true, INSTR_FMT_IX, HAS_ESCAPES_FLAG },
+    [RERAISE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [END_ASYNC_FOR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CLEANUP_THROW] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ASSERTION_ERROR] = { true, INSTR_FMT_IX, 0 },
+    [LOAD_BUILD_CLASS] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_NAME] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DELETE_NAME] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_UNPACK_SEQUENCE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_UNPACK_SEQUENCE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [UNPACK_SEQUENCE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [UNPACK_SEQUENCE_TWO_TUPLE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [UNPACK_SEQUENCE_TUPLE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [UNPACK_SEQUENCE_LIST] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [UNPACK_EX] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_STORE_ATTR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ESCAPES_FLAG },
+    [_STORE_ATTR] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_ATTR] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DELETE_ATTR] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_GLOBAL] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DELETE_GLOBAL] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_LOCALS] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_FROM_DICT_OR_GLOBALS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_NAME] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_LOAD_GLOBAL] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_GLOBAL] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_GLOBAL] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_GUARD_GLOBALS_VERSION] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [_GUARD_BUILTINS_VERSION] = { true, INSTR_FMT_IXC, HAS_DEOPT_FLAG },
+    [_LOAD_GLOBAL_MODULE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_LOAD_GLOBAL_BUILTINS] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [LOAD_GLOBAL_MODULE] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [LOAD_GLOBAL_BUILTIN] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [DELETE_FAST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_LOCAL_FLAG | HAS_ERROR_FLAG },
+    [MAKE_CELL] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_FREE_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DELETE_DEREF] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_FREE_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_FROM_DICT_OR_DEREF] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_FREE_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_DEREF] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_FREE_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_DEREF] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_FREE_FLAG | HAS_ESCAPES_FLAG },
+    [COPY_FREE_VARS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [BUILD_STRING] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BUILD_TUPLE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BUILD_LIST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LIST_EXTEND] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SET_UPDATE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BUILD_SET] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BUILD_MAP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SETUP_ANNOTATIONS] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BUILD_CONST_KEY_MAP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DICT_UPDATE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [DICT_MERGE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [MAP_ADD] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_LOAD_SUPER_ATTR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG },
+    [_SPECIALIZE_LOAD_SUPER_ATTR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_SUPER_ATTR] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_SUPER_ATTR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_SUPER_METHOD] = { true, 0, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ZERO_SUPER_METHOD] = { true, 0, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ZERO_SUPER_ATTR] = { true, 0, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_SUPER_ATTR_ATTR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_SUPER_ATTR_METHOD] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_LOAD_ATTR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_ATTR] = { true, INSTR_FMT_IBC0000000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ATTR] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_METHOD] = { true, 0, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_GUARD_TYPE_VERSION] = { true, INSTR_FMT_IXC0, HAS_DEOPT_FLAG },
+    [_CHECK_MANAGED_OBJECT_HAS_VALUES] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_LOAD_ATTR_INSTANCE_VALUE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [LOAD_ATTR_INSTANCE_VALUE] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_CHECK_ATTR_MODULE] = { true, INSTR_FMT_IXC0, HAS_DEOPT_FLAG },
+    [_LOAD_ATTR_MODULE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [LOAD_ATTR_MODULE] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_CHECK_ATTR_WITH_HINT] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_ATTR_WITH_HINT] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ATTR_WITH_HINT] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_ATTR_SLOT] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [LOAD_ATTR_SLOT] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_CHECK_ATTR_CLASS] = { true, INSTR_FMT_IXC0, HAS_DEOPT_FLAG },
+    [_LOAD_ATTR_CLASS] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG },
+    [LOAD_ATTR_CLASS] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [LOAD_ATTR_PROPERTY] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_GUARD_DORV_VALUES] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_STORE_ATTR_INSTANCE_VALUE] = { true, INSTR_FMT_IXC, HAS_ESCAPES_FLAG },
+    [STORE_ATTR_INSTANCE_VALUE] = { true, INSTR_FMT_IXC000, HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [STORE_ATTR_WITH_HINT] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_STORE_ATTR_SLOT] = { true, INSTR_FMT_IXC, HAS_ESCAPES_FLAG },
+    [STORE_ATTR_SLOT] = { true, INSTR_FMT_IXC000, HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_COMPARE_OP] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_COMPARE_OP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [COMPARE_OP] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [COMPARE_OP_FLOAT] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [COMPARE_OP_INT] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [COMPARE_OP_STR] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [IS_OP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [CONTAINS_OP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CHECK_EG_MATCH] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CHECK_EXC_MATCH] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [IMPORT_NAME] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [IMPORT_FROM] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [JUMP_FORWARD] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [JUMP_BACKWARD] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [JUMP] = { true, 0, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [JUMP_NO_INTERRUPT] = { true, 0, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [ENTER_EXECUTOR] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG },
+    [_POP_JUMP_IF_FALSE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [_POP_JUMP_IF_TRUE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [_IS_NONE] = { true, INSTR_FMT_IX, 0 },
+    [POP_JUMP_IF_TRUE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [POP_JUMP_IF_FALSE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [POP_JUMP_IF_NONE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [POP_JUMP_IF_NOT_NONE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [JUMP_BACKWARD_NO_INTERRUPT] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [GET_LEN] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [MATCH_CLASS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [MATCH_MAPPING] = { true, INSTR_FMT_IX, 0 },
+    [MATCH_SEQUENCE] = { true, INSTR_FMT_IX, 0 },
+    [MATCH_KEYS] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [GET_ITER] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [GET_YIELD_FROM_ITER] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_FOR_ITER] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_FOR_ITER] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_FOR_ITER_TIER_TWO] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [FOR_ITER] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_FOR_ITER] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_ITER_CHECK_LIST] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_ITER_JUMP_LIST] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [_GUARD_NOT_EXHAUSTED_LIST] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_ITER_NEXT_LIST] = { true, INSTR_FMT_IX, 0 },
+    [FOR_ITER_LIST] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_DEOPT_FLAG },
+    [_ITER_CHECK_TUPLE] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_ITER_JUMP_TUPLE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [_GUARD_NOT_EXHAUSTED_TUPLE] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_ITER_NEXT_TUPLE] = { true, INSTR_FMT_IX, 0 },
+    [FOR_ITER_TUPLE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_DEOPT_FLAG },
+    [_ITER_CHECK_RANGE] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_ITER_JUMP_RANGE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_JUMP_FLAG },
+    [_GUARD_NOT_EXHAUSTED_RANGE] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_ITER_NEXT_RANGE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [FOR_ITER_RANGE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_JUMP_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [FOR_ITER_GEN] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [BEFORE_ASYNC_WITH] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BEFORE_WITH] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [WITH_EXCEPT_START] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SETUP_FINALLY] = { true, 0, HAS_ARG_FLAG },
+    [SETUP_CLEANUP] = { true, 0, HAS_ARG_FLAG },
+    [SETUP_WITH] = { true, 0, HAS_ARG_FLAG },
+    [POP_BLOCK] = { true, 0, 0 },
+    [PUSH_EXC_INFO] = { true, INSTR_FMT_IX, 0 },
+    [_GUARD_DORV_VALUES_INST_ATTR_FROM_DICT] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_GUARD_KEYS_VERSION] = { true, INSTR_FMT_IXC0, HAS_DEOPT_FLAG },
+    [_LOAD_ATTR_METHOD_WITH_VALUES] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ATTR_METHOD_WITH_VALUES] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_ATTR_METHOD_NO_DICT] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ATTR_METHOD_NO_DICT] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [_LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG },
+    [LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_LOAD_ATTR_NONDESCRIPTOR_NO_DICT] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG },
+    [LOAD_ATTR_NONDESCRIPTOR_NO_DICT] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_CHECK_ATTR_METHOD_LAZY_DICT] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_LOAD_ATTR_METHOD_LAZY_DICT] = { true, INSTR_FMT_IBC000, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [LOAD_ATTR_METHOD_LAZY_DICT] = { true, INSTR_FMT_IBC00000000, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_CALL] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_SPECIALIZE_CALL] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_CALL] = { true, INSTR_FMT_IBC0, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [_CHECK_CALL_BOUND_METHOD_EXACT_ARGS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_INIT_CALL_BOUND_METHOD_EXACT_ARGS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [_CHECK_PEP_523] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_CHECK_FUNCTION_EXACT_ARGS] = { true, INSTR_FMT_IBC0, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_CHECK_STACK_SPACE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [_INIT_CALL_PY_EXACT_ARGS] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_PUSH_FRAME] = { true, INSTR_FMT_IX, 0 },
+    [CALL_BOUND_METHOD_EXACT_ARGS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_PY_EXACT_ARGS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_PY_WITH_DEFAULTS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_TYPE_1] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG },
+    [CALL_STR_1] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_TUPLE_1] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_ALLOC_AND_ENTER_INIT] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [EXIT_INIT_CHECK] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_BUILTIN_CLASS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG },
+    [CALL_BUILTIN_O] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_BUILTIN_FAST] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_LEN] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_ISINSTANCE] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_LIST_APPEND] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG },
+    [CALL_METHOD_DESCRIPTOR_O] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_METHOD_DESCRIPTOR_NOARGS] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_METHOD_DESCRIPTOR_FAST] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_DEOPT_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_CALL_KW] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CALL_KW] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_CALL_FUNCTION_EX] = { true, INSTR_FMT_IX, 0 },
+    [CALL_FUNCTION_EX] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [MAKE_FUNCTION] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SET_FUNCTION_ATTRIBUTE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [RETURN_GENERATOR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [BUILD_SLICE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [CONVERT_VALUE] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG },
+    [FORMAT_SIMPLE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [FORMAT_WITH_SPEC] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [COPY] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [_SPECIALIZE_BINARY_OP] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_BINARY_OP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG },
+    [BINARY_OP] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [SWAP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [INSTRUMENTED_INSTRUCTION] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_JUMP_FORWARD] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [INSTRUMENTED_JUMP_BACKWARD] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG },
+    [INSTRUMENTED_POP_JUMP_IF_TRUE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG },
+    [INSTRUMENTED_POP_JUMP_IF_FALSE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG },
+    [INSTRUMENTED_POP_JUMP_IF_NONE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG },
+    [INSTRUMENTED_POP_JUMP_IF_NOT_NONE] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG },
+    [EXTENDED_ARG] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [CACHE] = { true, INSTR_FMT_IX, HAS_ESCAPES_FLAG },
+    [RESERVED] = { true, INSTR_FMT_IX, HAS_ESCAPES_FLAG },
+    [_GUARD_IS_TRUE_POP] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_GUARD_IS_FALSE_POP] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_GUARD_IS_NONE_POP] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_GUARD_IS_NOT_NONE_POP] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+    [_JUMP_TO_TOP] = { true, INSTR_FMT_IX, HAS_EVAL_BREAK_FLAG },
+    [_SET_IP] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ESCAPES_FLAG },
+    [_SAVE_RETURN_OFFSET] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [_EXIT_TRACE] = { true, INSTR_FMT_IX, 0 },
+    [_INSERT] = { true, INSTR_FMT_IB, HAS_ARG_FLAG },
+    [_CHECK_VALIDITY] = { true, INSTR_FMT_IX, HAS_DEOPT_FLAG },
+};
+#endif // NEED_OPCODE_METADATA
+
+extern const struct opcode_macro_expansion _PyOpcode_macro_expansion[OPCODE_MACRO_EXPANSION_SIZE];
+#ifdef NEED_OPCODE_METADATA
+const struct opcode_macro_expansion _PyOpcode_macro_expansion[OPCODE_MACRO_EXPANSION_SIZE] = {
+    [NOP] = { .nuops = 1, .uops = { { NOP, 0, 0 } } },
+    [RESUME_CHECK] = { .nuops = 1, .uops = { { RESUME_CHECK, 0, 0 } } },
+    [LOAD_FAST_CHECK] = { .nuops = 1, .uops = { { LOAD_FAST_CHECK, 0, 0 } } },
+    [LOAD_FAST] = { .nuops = 1, .uops = { { LOAD_FAST, 0, 0 } } },
+    [LOAD_FAST_AND_CLEAR] = { .nuops = 1, .uops = { { LOAD_FAST_AND_CLEAR, 0, 0 } } },
+    [LOAD_FAST_LOAD_FAST] = { .nuops = 2, .uops = { { LOAD_FAST, 5, 0 }, { LOAD_FAST, 6, 0 } } },
+    [LOAD_CONST] = { .nuops = 1, .uops = { { LOAD_CONST, 0, 0 } } },
+    [STORE_FAST] = { .nuops = 1, .uops = { { STORE_FAST, 0, 0 } } },
+    [STORE_FAST_LOAD_FAST] = { .nuops = 2, .uops = { { STORE_FAST, 5, 0 }, { LOAD_FAST, 6, 0 } } },
+    [STORE_FAST_STORE_FAST] = { .nuops = 2, .uops = { { STORE_FAST, 5, 0 }, { STORE_FAST, 6, 0 } } },
+    [POP_TOP] = { .nuops = 1, .uops = { { POP_TOP, 0, 0 } } },
+    [PUSH_NULL] = { .nuops = 1, .uops = { { PUSH_NULL, 0, 0 } } },
+    [END_FOR] = { .nuops = 2, .uops = { { POP_TOP, 0, 0 }, { POP_TOP, 0, 0 } } },
+    [END_SEND] = { .nuops = 1, .uops = { { END_SEND, 0, 0 } } },
+    [UNARY_NEGATIVE] = { .nuops = 1, .uops = { { UNARY_NEGATIVE, 0, 0 } } },
+    [UNARY_NOT] = { .nuops = 1, .uops = { { UNARY_NOT, 0, 0 } } },
+    [TO_BOOL] = { .nuops = 1, .uops = { { _TO_BOOL, 0, 0 } } },
+    [TO_BOOL_BOOL] = { .nuops = 1, .uops = { { TO_BOOL_BOOL, 0, 0 } } },
+    [TO_BOOL_INT] = { .nuops = 1, .uops = { { TO_BOOL_INT, 0, 0 } } },
+    [TO_BOOL_LIST] = { .nuops = 1, .uops = { { TO_BOOL_LIST, 0, 0 } } },
+    [TO_BOOL_NONE] = { .nuops = 1, .uops = { { TO_BOOL_NONE, 0, 0 } } },
+    [TO_BOOL_STR] = { .nuops = 1, .uops = { { TO_BOOL_STR, 0, 0 } } },
+    [TO_BOOL_ALWAYS_TRUE] = { .nuops = 1, .uops = { { TO_BOOL_ALWAYS_TRUE, 2, 1 } } },
+    [UNARY_INVERT] = { .nuops = 1, .uops = { { UNARY_INVERT, 0, 0 } } },
+    [BINARY_OP_MULTIPLY_INT] = { .nuops = 2, .uops = { { _GUARD_BOTH_INT, 0, 0 }, { _BINARY_OP_MULTIPLY_INT, 0, 0 } } },
+    [BINARY_OP_ADD_INT] = { .nuops = 2, .uops = { { _GUARD_BOTH_INT, 0, 0 }, { _BINARY_OP_ADD_INT, 0, 0 } } },
+    [BINARY_OP_SUBTRACT_INT] = { .nuops = 2, .uops = { { _GUARD_BOTH_INT, 0, 0 }, { _BINARY_OP_SUBTRACT_INT, 0, 0 } } },
+    [BINARY_OP_MULTIPLY_FLOAT] = { .nuops = 2, .uops = { { _GUARD_BOTH_FLOAT, 0, 0 }, { _BINARY_OP_MULTIPLY_FLOAT, 0, 0 } } },
+    [BINARY_OP_ADD_FLOAT] = { .nuops = 2, .uops = { { _GUARD_BOTH_FLOAT, 0, 0 }, { _BINARY_OP_ADD_FLOAT, 0, 0 } } },
+    [BINARY_OP_SUBTRACT_FLOAT] = { .nuops = 2, .uops = { { _GUARD_BOTH_FLOAT, 0, 0 }, { _BINARY_OP_SUBTRACT_FLOAT, 0, 0 } } },
+    [BINARY_OP_ADD_UNICODE] = { .nuops = 2, .uops = { { _GUARD_BOTH_UNICODE, 0, 0 }, { _BINARY_OP_ADD_UNICODE, 0, 0 } } },
+    [BINARY_SUBSCR] = { .nuops = 1, .uops = { { _BINARY_SUBSCR, 0, 0 } } },
+    [BINARY_SLICE] = { .nuops = 1, .uops = { { BINARY_SLICE, 0, 0 } } },
+    [STORE_SLICE] = { .nuops = 1, .uops = { { STORE_SLICE, 0, 0 } } },
+    [BINARY_SUBSCR_LIST_INT] = { .nuops = 1, .uops = { { BINARY_SUBSCR_LIST_INT, 0, 0 } } },
+    [BINARY_SUBSCR_STR_INT] = { .nuops = 1, .uops = { { BINARY_SUBSCR_STR_INT, 0, 0 } } },
+    [BINARY_SUBSCR_TUPLE_INT] = { .nuops = 1, .uops = { { BINARY_SUBSCR_TUPLE_INT, 0, 0 } } },
+    [BINARY_SUBSCR_DICT] = { .nuops = 1, .uops = { { BINARY_SUBSCR_DICT, 0, 0 } } },
+    [LIST_APPEND] = { .nuops = 1, .uops = { { LIST_APPEND, 0, 0 } } },
+    [SET_ADD] = { .nuops = 1, .uops = { { SET_ADD, 0, 0 } } },
+    [STORE_SUBSCR] = { .nuops = 1, .uops = { { _STORE_SUBSCR, 0, 0 } } },
+    [STORE_SUBSCR_LIST_INT] = { .nuops = 1, .uops = { { STORE_SUBSCR_LIST_INT, 0, 0 } } },
+    [STORE_SUBSCR_DICT] = { .nuops = 1, .uops = { { STORE_SUBSCR_DICT, 0, 0 } } },
+    [DELETE_SUBSCR] = { .nuops = 1, .uops = { { DELETE_SUBSCR, 0, 0 } } },
+    [CALL_INTRINSIC_1] = { .nuops = 1, .uops = { { CALL_INTRINSIC_1, 0, 0 } } },
+    [CALL_INTRINSIC_2] = { .nuops = 1, .uops = { { CALL_INTRINSIC_2, 0, 0 } } },
+    [RETURN_VALUE] = { .nuops = 1, .uops = { { _POP_FRAME, 0, 0 } } },
+    [RETURN_CONST] = { .nuops = 2, .uops = { { LOAD_CONST, 0, 0 }, { _POP_FRAME, 0, 0 } } },
+    [GET_AITER] = { .nuops = 1, .uops = { { GET_AITER, 0, 0 } } },
+    [GET_ANEXT] = { .nuops = 1, .uops = { { GET_ANEXT, 0, 0 } } },
+    [GET_AWAITABLE] = { .nuops = 1, .uops = { { GET_AWAITABLE, 0, 0 } } },
+    [POP_EXCEPT] = { .nuops = 1, .uops = { { POP_EXCEPT, 0, 0 } } },
+    [LOAD_ASSERTION_ERROR] = { .nuops = 1, .uops = { { LOAD_ASSERTION_ERROR, 0, 0 } } },
+    [LOAD_BUILD_CLASS] = { .nuops = 1, .uops = { { LOAD_BUILD_CLASS, 0, 0 } } },
+    [STORE_NAME] = { .nuops = 1, .uops = { { STORE_NAME, 0, 0 } } },
+    [DELETE_NAME] = { .nuops = 1, .uops = { { DELETE_NAME, 0, 0 } } },
+    [UNPACK_SEQUENCE] = { .nuops = 1, .uops = { { _UNPACK_SEQUENCE, 0, 0 } } },
+    [UNPACK_SEQUENCE_TWO_TUPLE] = { .nuops = 1, .uops = { { UNPACK_SEQUENCE_TWO_TUPLE, 0, 0 } } },
+    [UNPACK_SEQUENCE_TUPLE] = { .nuops = 1, .uops = { { UNPACK_SEQUENCE_TUPLE, 0, 0 } } },
+    [UNPACK_SEQUENCE_LIST] = { .nuops = 1, .uops = { { UNPACK_SEQUENCE_LIST, 0, 0 } } },
+    [UNPACK_EX] = { .nuops = 1, .uops = { { UNPACK_EX, 0, 0 } } },
+    [STORE_ATTR] = { .nuops = 1, .uops = { { _STORE_ATTR, 0, 0 } } },
+    [DELETE_ATTR] = { .nuops = 1, .uops = { { DELETE_ATTR, 0, 0 } } },
+    [STORE_GLOBAL] = { .nuops = 1, .uops = { { STORE_GLOBAL, 0, 0 } } },
+    [DELETE_GLOBAL] = { .nuops = 1, .uops = { { DELETE_GLOBAL, 0, 0 } } },
+    [LOAD_LOCALS] = { .nuops = 1, .uops = { { LOAD_LOCALS, 0, 0 } } },
+    [LOAD_FROM_DICT_OR_GLOBALS] = { .nuops = 1, .uops = { { LOAD_FROM_DICT_OR_GLOBALS, 0, 0 } } },
+    [LOAD_NAME] = { .nuops = 1, .uops = { { LOAD_NAME, 0, 0 } } },
+    [LOAD_GLOBAL] = { .nuops = 1, .uops = { { _LOAD_GLOBAL, 0, 0 } } },
+    [LOAD_GLOBAL_MODULE] = { .nuops = 2, .uops = { { _GUARD_GLOBALS_VERSION, 1, 1 }, { _LOAD_GLOBAL_MODULE, 1, 3 } } },
+    [LOAD_GLOBAL_BUILTIN] = { .nuops = 3, .uops = { { _GUARD_GLOBALS_VERSION, 1, 1 }, { _GUARD_BUILTINS_VERSION, 1, 2 }, { _LOAD_GLOBAL_BUILTINS, 1, 3 } } },
+    [DELETE_FAST] = { .nuops = 1, .uops = { { DELETE_FAST, 0, 0 } } },
+    [MAKE_CELL] = { .nuops = 1, .uops = { { MAKE_CELL, 0, 0 } } },
+    [DELETE_DEREF] = { .nuops = 1, .uops = { { DELETE_DEREF, 0, 0 } } },
+    [LOAD_FROM_DICT_OR_DEREF] = { .nuops = 1, .uops = { { LOAD_FROM_DICT_OR_DEREF, 0, 0 } } },
+    [LOAD_DEREF] = { .nuops = 1, .uops = { { LOAD_DEREF, 0, 0 } } },
+    [STORE_DEREF] = { .nuops = 1, .uops = { { STORE_DEREF, 0, 0 } } },
+    [COPY_FREE_VARS] = { .nuops = 1, .uops = { { COPY_FREE_VARS, 0, 0 } } },
+    [BUILD_STRING] = { .nuops = 1, .uops = { { BUILD_STRING, 0, 0 } } },
+    [BUILD_TUPLE] = { .nuops = 1, .uops = { { BUILD_TUPLE, 0, 0 } } },
+    [BUILD_LIST] = { .nuops = 1, .uops = { { BUILD_LIST, 0, 0 } } },
+    [LIST_EXTEND] = { .nuops = 1, .uops = { { LIST_EXTEND, 0, 0 } } },
+    [SET_UPDATE] = { .nuops = 1, .uops = { { SET_UPDATE, 0, 0 } } },
+    [BUILD_SET] = { .nuops = 1, .uops = { { BUILD_SET, 0, 0 } } },
+    [BUILD_MAP] = { .nuops = 1, .uops = { { BUILD_MAP, 0, 0 } } },
+    [SETUP_ANNOTATIONS] = { .nuops = 1, .uops = { { SETUP_ANNOTATIONS, 0, 0 } } },
+    [BUILD_CONST_KEY_MAP] = { .nuops = 1, .uops = { { BUILD_CONST_KEY_MAP, 0, 0 } } },
+    [DICT_UPDATE] = { .nuops = 1, .uops = { { DICT_UPDATE, 0, 0 } } },
+    [DICT_MERGE] = { .nuops = 1, .uops = { { DICT_MERGE, 0, 0 } } },
+    [MAP_ADD] = { .nuops = 1, .uops = { { MAP_ADD, 0, 0 } } },
+    [LOAD_SUPER_ATTR_ATTR] = { .nuops = 1, .uops = { { LOAD_SUPER_ATTR_ATTR, 0, 0 } } },
+    [LOAD_SUPER_ATTR_METHOD] = { .nuops = 1, .uops = { { LOAD_SUPER_ATTR_METHOD, 0, 0 } } },
+    [LOAD_ATTR] = { .nuops = 1, .uops = { { _LOAD_ATTR, 0, 0 } } },
+    [LOAD_ATTR_INSTANCE_VALUE] = { .nuops = 3, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _CHECK_MANAGED_OBJECT_HAS_VALUES, 0, 0 }, { _LOAD_ATTR_INSTANCE_VALUE, 1, 3 } } },
+    [LOAD_ATTR_MODULE] = { .nuops = 2, .uops = { { _CHECK_ATTR_MODULE, 2, 1 }, { _LOAD_ATTR_MODULE, 1, 3 } } },
+    [LOAD_ATTR_WITH_HINT] = { .nuops = 3, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _CHECK_ATTR_WITH_HINT, 0, 0 }, { _LOAD_ATTR_WITH_HINT, 1, 3 } } },
+    [LOAD_ATTR_SLOT] = { .nuops = 2, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _LOAD_ATTR_SLOT, 1, 3 } } },
+    [LOAD_ATTR_CLASS] = { .nuops = 2, .uops = { { _CHECK_ATTR_CLASS, 2, 1 }, { _LOAD_ATTR_CLASS, 4, 5 } } },
+    [STORE_ATTR_INSTANCE_VALUE] = { .nuops = 3, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _GUARD_DORV_VALUES, 0, 0 }, { _STORE_ATTR_INSTANCE_VALUE, 1, 3 } } },
+    [STORE_ATTR_SLOT] = { .nuops = 2, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _STORE_ATTR_SLOT, 1, 3 } } },
+    [COMPARE_OP] = { .nuops = 1, .uops = { { _COMPARE_OP, 0, 0 } } },
+    [COMPARE_OP_FLOAT] = { .nuops = 1, .uops = { { COMPARE_OP_FLOAT, 0, 0 } } },
+    [COMPARE_OP_INT] = { .nuops = 1, .uops = { { COMPARE_OP_INT, 0, 0 } } },
+    [COMPARE_OP_STR] = { .nuops = 1, .uops = { { COMPARE_OP_STR, 0, 0 } } },
+    [IS_OP] = { .nuops = 1, .uops = { { IS_OP, 0, 0 } } },
+    [CONTAINS_OP] = { .nuops = 1, .uops = { { CONTAINS_OP, 0, 0 } } },
+    [CHECK_EG_MATCH] = { .nuops = 1, .uops = { { CHECK_EG_MATCH, 0, 0 } } },
+    [CHECK_EXC_MATCH] = { .nuops = 1, .uops = { { CHECK_EXC_MATCH, 0, 0 } } },
+    [POP_JUMP_IF_TRUE] = { .nuops = 1, .uops = { { _POP_JUMP_IF_TRUE, 0, 0 } } },
+    [POP_JUMP_IF_FALSE] = { .nuops = 1, .uops = { { _POP_JUMP_IF_FALSE, 0, 0 } } },
+    [POP_JUMP_IF_NONE] = { .nuops = 2, .uops = { { _IS_NONE, 0, 0 }, { _POP_JUMP_IF_TRUE, 0, 0 } } },
+    [POP_JUMP_IF_NOT_NONE] = { .nuops = 2, .uops = { { _IS_NONE, 0, 0 }, { _POP_JUMP_IF_FALSE, 0, 0 } } },
+    [GET_LEN] = { .nuops = 1, .uops = { { GET_LEN, 0, 0 } } },
+    [MATCH_CLASS] = { .nuops = 1, .uops = { { MATCH_CLASS, 0, 0 } } },
+    [MATCH_MAPPING] = { .nuops = 1, .uops = { { MATCH_MAPPING, 0, 0 } } },
+    [MATCH_SEQUENCE] = { .nuops = 1, .uops = { { MATCH_SEQUENCE, 0, 0 } } },
+    [MATCH_KEYS] = { .nuops = 1, .uops = { { MATCH_KEYS, 0, 0 } } },
+    [GET_ITER] = { .nuops = 1, .uops = { { GET_ITER, 0, 0 } } },
+    [GET_YIELD_FROM_ITER] = { .nuops = 1, .uops = { { GET_YIELD_FROM_ITER, 0, 0 } } },
+    [FOR_ITER] = { .nuops = 1, .uops = { { _FOR_ITER, 0, 0 } } },
+    [FOR_ITER_LIST] = { .nuops = 3, .uops = { { _ITER_CHECK_LIST, 0, 0 }, { _ITER_JUMP_LIST, 0, 0 }, { _ITER_NEXT_LIST, 0, 0 } } },
+    [FOR_ITER_TUPLE] = { .nuops = 3, .uops = { { _ITER_CHECK_TUPLE, 0, 0 }, { _ITER_JUMP_TUPLE, 0, 0 }, { _ITER_NEXT_TUPLE, 0, 0 } } },
+    [FOR_ITER_RANGE] = { .nuops = 3, .uops = { { _ITER_CHECK_RANGE, 0, 0 }, { _ITER_JUMP_RANGE, 0, 0 }, { _ITER_NEXT_RANGE, 0, 0 } } },
+    [BEFORE_ASYNC_WITH] = { .nuops = 1, .uops = { { BEFORE_ASYNC_WITH, 0, 0 } } },
+    [BEFORE_WITH] = { .nuops = 1, .uops = { { BEFORE_WITH, 0, 0 } } },
+    [WITH_EXCEPT_START] = { .nuops = 1, .uops = { { WITH_EXCEPT_START, 0, 0 } } },
+    [PUSH_EXC_INFO] = { .nuops = 1, .uops = { { PUSH_EXC_INFO, 0, 0 } } },
+    [LOAD_ATTR_METHOD_WITH_VALUES] = { .nuops = 4, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT, 0, 0 }, { _GUARD_KEYS_VERSION, 2, 3 }, { _LOAD_ATTR_METHOD_WITH_VALUES, 4, 5 } } },
+    [LOAD_ATTR_METHOD_NO_DICT] = { .nuops = 2, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _LOAD_ATTR_METHOD_NO_DICT, 4, 5 } } },
+    [LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES] = { .nuops = 4, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT, 0, 0 }, { _GUARD_KEYS_VERSION, 2, 3 }, { _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES, 4, 5 } } },
+    [LOAD_ATTR_NONDESCRIPTOR_NO_DICT] = { .nuops = 2, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _LOAD_ATTR_NONDESCRIPTOR_NO_DICT, 4, 5 } } },
+    [LOAD_ATTR_METHOD_LAZY_DICT] = { .nuops = 3, .uops = { { _GUARD_TYPE_VERSION, 2, 1 }, { _CHECK_ATTR_METHOD_LAZY_DICT, 0, 0 }, { _LOAD_ATTR_METHOD_LAZY_DICT, 4, 5 } } },
+    [CALL_BOUND_METHOD_EXACT_ARGS] = { .nuops = 8, .uops = { { _CHECK_PEP_523, 0, 0 }, { _CHECK_CALL_BOUND_METHOD_EXACT_ARGS, 0, 0 }, { _INIT_CALL_BOUND_METHOD_EXACT_ARGS, 0, 0 }, { _CHECK_FUNCTION_EXACT_ARGS, 2, 1 }, { _CHECK_STACK_SPACE, 0, 0 }, { _INIT_CALL_PY_EXACT_ARGS, 0, 0 }, { _SAVE_RETURN_OFFSET, 7, 3 }, { _PUSH_FRAME, 0, 0 } } },
+    [CALL_PY_EXACT_ARGS] = { .nuops = 6, .uops = { { _CHECK_PEP_523, 0, 0 }, { _CHECK_FUNCTION_EXACT_ARGS, 2, 1 }, { _CHECK_STACK_SPACE, 0, 0 }, { _INIT_CALL_PY_EXACT_ARGS, 0, 0 }, { _SAVE_RETURN_OFFSET, 7, 3 }, { _PUSH_FRAME, 0, 0 } } },
+    [CALL_TYPE_1] = { .nuops = 1, .uops = { { CALL_TYPE_1, 0, 0 } } },
+    [CALL_STR_1] = { .nuops = 1, .uops = { { CALL_STR_1, 0, 0 } } },
+    [CALL_TUPLE_1] = { .nuops = 1, .uops = { { CALL_TUPLE_1, 0, 0 } } },
+    [EXIT_INIT_CHECK] = { .nuops = 1, .uops = { { EXIT_INIT_CHECK, 0, 0 } } },
+    [CALL_BUILTIN_CLASS] = { .nuops = 1, .uops = { { CALL_BUILTIN_CLASS, 0, 0 } } },
+    [CALL_BUILTIN_O] = { .nuops = 1, .uops = { { CALL_BUILTIN_O, 0, 0 } } },
+    [CALL_BUILTIN_FAST] = { .nuops = 1, .uops = { { CALL_BUILTIN_FAST, 0, 0 } } },
+    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = { .nuops = 1, .uops = { { CALL_BUILTIN_FAST_WITH_KEYWORDS, 0, 0 } } },
+    [CALL_LEN] = { .nuops = 1, .uops = { { CALL_LEN, 0, 0 } } },
+    [CALL_ISINSTANCE] = { .nuops = 1, .uops = { { CALL_ISINSTANCE, 0, 0 } } },
+    [CALL_METHOD_DESCRIPTOR_O] = { .nuops = 1, .uops = { { CALL_METHOD_DESCRIPTOR_O, 0, 0 } } },
+    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = { .nuops = 1, .uops = { { CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS, 0, 0 } } },
+    [CALL_METHOD_DESCRIPTOR_NOARGS] = { .nuops = 1, .uops = { { CALL_METHOD_DESCRIPTOR_NOARGS, 0, 0 } } },
+    [CALL_METHOD_DESCRIPTOR_FAST] = { .nuops = 1, .uops = { { CALL_METHOD_DESCRIPTOR_FAST, 0, 0 } } },
+    [MAKE_FUNCTION] = { .nuops = 1, .uops = { { MAKE_FUNCTION, 0, 0 } } },
+    [SET_FUNCTION_ATTRIBUTE] = { .nuops = 1, .uops = { { SET_FUNCTION_ATTRIBUTE, 0, 0 } } },
+    [BUILD_SLICE] = { .nuops = 1, .uops = { { BUILD_SLICE, 0, 0 } } },
+    [CONVERT_VALUE] = { .nuops = 1, .uops = { { CONVERT_VALUE, 0, 0 } } },
+    [FORMAT_SIMPLE] = { .nuops = 1, .uops = { { FORMAT_SIMPLE, 0, 0 } } },
+    [FORMAT_WITH_SPEC] = { .nuops = 1, .uops = { { FORMAT_WITH_SPEC, 0, 0 } } },
+    [COPY] = { .nuops = 1, .uops = { { COPY, 0, 0 } } },
+    [BINARY_OP] = { .nuops = 1, .uops = { { _BINARY_OP, 0, 0 } } },
+    [SWAP] = { .nuops = 1, .uops = { { SWAP, 0, 0 } } },
+};
+#endif // NEED_OPCODE_METADATA
+
+extern const char * const _PyOpcode_uop_name[OPCODE_UOP_NAME_SIZE];
+#ifdef NEED_OPCODE_METADATA
+const char * const _PyOpcode_uop_name[OPCODE_UOP_NAME_SIZE] = {
+    [_EXIT_TRACE] = "_EXIT_TRACE",
+    [_SET_IP] = "_SET_IP",
+    [_SPECIALIZE_TO_BOOL] = "_SPECIALIZE_TO_BOOL",
+    [_TO_BOOL] = "_TO_BOOL",
+    [_GUARD_BOTH_INT] = "_GUARD_BOTH_INT",
+    [_BINARY_OP_MULTIPLY_INT] = "_BINARY_OP_MULTIPLY_INT",
+    [_BINARY_OP_ADD_INT] = "_BINARY_OP_ADD_INT",
+    [_BINARY_OP_SUBTRACT_INT] = "_BINARY_OP_SUBTRACT_INT",
+    [_GUARD_BOTH_FLOAT] = "_GUARD_BOTH_FLOAT",
+    [_BINARY_OP_MULTIPLY_FLOAT] = "_BINARY_OP_MULTIPLY_FLOAT",
+    [_BINARY_OP_ADD_FLOAT] = "_BINARY_OP_ADD_FLOAT",
+    [_BINARY_OP_SUBTRACT_FLOAT] = "_BINARY_OP_SUBTRACT_FLOAT",
+    [_GUARD_BOTH_UNICODE] = "_GUARD_BOTH_UNICODE",
+    [_BINARY_OP_ADD_UNICODE] = "_BINARY_OP_ADD_UNICODE",
+    [_BINARY_OP_INPLACE_ADD_UNICODE] = "_BINARY_OP_INPLACE_ADD_UNICODE",
+    [_SPECIALIZE_BINARY_SUBSCR] = "_SPECIALIZE_BINARY_SUBSCR",
+    [_BINARY_SUBSCR] = "_BINARY_SUBSCR",
+    [_SPECIALIZE_STORE_SUBSCR] = "_SPECIALIZE_STORE_SUBSCR",
+    [_STORE_SUBSCR] = "_STORE_SUBSCR",
+    [_POP_FRAME] = "_POP_FRAME",
+    [_SPECIALIZE_SEND] = "_SPECIALIZE_SEND",
+    [_SEND] = "_SEND",
+    [_SPECIALIZE_UNPACK_SEQUENCE] = "_SPECIALIZE_UNPACK_SEQUENCE",
+    [_UNPACK_SEQUENCE] = "_UNPACK_SEQUENCE",
+    [_SPECIALIZE_STORE_ATTR] = "_SPECIALIZE_STORE_ATTR",
+    [_STORE_ATTR] = "_STORE_ATTR",
+    [_SPECIALIZE_LOAD_GLOBAL] = "_SPECIALIZE_LOAD_GLOBAL",
+    [_LOAD_GLOBAL] = "_LOAD_GLOBAL",
+    [_GUARD_GLOBALS_VERSION] = "_GUARD_GLOBALS_VERSION",
+    [_GUARD_BUILTINS_VERSION] = "_GUARD_BUILTINS_VERSION",
+    [_LOAD_GLOBAL_MODULE] = "_LOAD_GLOBAL_MODULE",
+    [_LOAD_GLOBAL_BUILTINS] = "_LOAD_GLOBAL_BUILTINS",
+    [_SPECIALIZE_LOAD_SUPER_ATTR] = "_SPECIALIZE_LOAD_SUPER_ATTR",
+    [_LOAD_SUPER_ATTR] = "_LOAD_SUPER_ATTR",
+    [_SPECIALIZE_LOAD_ATTR] = "_SPECIALIZE_LOAD_ATTR",
+    [_LOAD_ATTR] = "_LOAD_ATTR",
+    [_GUARD_TYPE_VERSION] = "_GUARD_TYPE_VERSION",
+    [_CHECK_MANAGED_OBJECT_HAS_VALUES] = "_CHECK_MANAGED_OBJECT_HAS_VALUES",
+    [_LOAD_ATTR_INSTANCE_VALUE] = "_LOAD_ATTR_INSTANCE_VALUE",
+    [_CHECK_ATTR_MODULE] = "_CHECK_ATTR_MODULE",
+    [_LOAD_ATTR_MODULE] = "_LOAD_ATTR_MODULE",
+    [_CHECK_ATTR_WITH_HINT] = "_CHECK_ATTR_WITH_HINT",
+    [_LOAD_ATTR_WITH_HINT] = "_LOAD_ATTR_WITH_HINT",
+    [_LOAD_ATTR_SLOT] = "_LOAD_ATTR_SLOT",
+    [_CHECK_ATTR_CLASS] = "_CHECK_ATTR_CLASS",
+    [_LOAD_ATTR_CLASS] = "_LOAD_ATTR_CLASS",
+    [_GUARD_DORV_VALUES] = "_GUARD_DORV_VALUES",
+    [_STORE_ATTR_INSTANCE_VALUE] = "_STORE_ATTR_INSTANCE_VALUE",
+    [_STORE_ATTR_SLOT] = "_STORE_ATTR_SLOT",
+    [_SPECIALIZE_COMPARE_OP] = "_SPECIALIZE_COMPARE_OP",
+    [_COMPARE_OP] = "_COMPARE_OP",
+    [_POP_JUMP_IF_FALSE] = "_POP_JUMP_IF_FALSE",
+    [_POP_JUMP_IF_TRUE] = "_POP_JUMP_IF_TRUE",
+    [_IS_NONE] = "_IS_NONE",
+    [_SPECIALIZE_FOR_ITER] = "_SPECIALIZE_FOR_ITER",
+    [_FOR_ITER] = "_FOR_ITER",
+    [_FOR_ITER_TIER_TWO] = "_FOR_ITER_TIER_TWO",
+    [_ITER_CHECK_LIST] = "_ITER_CHECK_LIST",
+    [_ITER_JUMP_LIST] = "_ITER_JUMP_LIST",
+    [_GUARD_NOT_EXHAUSTED_LIST] = "_GUARD_NOT_EXHAUSTED_LIST",
+    [_ITER_NEXT_LIST] = "_ITER_NEXT_LIST",
+    [_ITER_CHECK_TUPLE] = "_ITER_CHECK_TUPLE",
+    [_ITER_JUMP_TUPLE] = "_ITER_JUMP_TUPLE",
+    [_GUARD_NOT_EXHAUSTED_TUPLE] = "_GUARD_NOT_EXHAUSTED_TUPLE",
+    [_ITER_NEXT_TUPLE] = "_ITER_NEXT_TUPLE",
+    [_ITER_CHECK_RANGE] = "_ITER_CHECK_RANGE",
+    [_ITER_JUMP_RANGE] = "_ITER_JUMP_RANGE",
+    [_GUARD_NOT_EXHAUSTED_RANGE] = "_GUARD_NOT_EXHAUSTED_RANGE",
+    [_ITER_NEXT_RANGE] = "_ITER_NEXT_RANGE",
+    [_GUARD_DORV_VALUES_INST_ATTR_FROM_DICT] = "_GUARD_DORV_VALUES_INST_ATTR_FROM_DICT",
+    [_GUARD_KEYS_VERSION] = "_GUARD_KEYS_VERSION",
+    [_LOAD_ATTR_METHOD_WITH_VALUES] = "_LOAD_ATTR_METHOD_WITH_VALUES",
+    [_LOAD_ATTR_METHOD_NO_DICT] = "_LOAD_ATTR_METHOD_NO_DICT",
+    [_LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES] = "_LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES",
+    [_LOAD_ATTR_NONDESCRIPTOR_NO_DICT] = "_LOAD_ATTR_NONDESCRIPTOR_NO_DICT",
+    [_CHECK_ATTR_METHOD_LAZY_DICT] = "_CHECK_ATTR_METHOD_LAZY_DICT",
+    [_LOAD_ATTR_METHOD_LAZY_DICT] = "_LOAD_ATTR_METHOD_LAZY_DICT",
+    [_SPECIALIZE_CALL] = "_SPECIALIZE_CALL",
+    [_CALL] = "_CALL",
+    [_CHECK_CALL_BOUND_METHOD_EXACT_ARGS] = "_CHECK_CALL_BOUND_METHOD_EXACT_ARGS",
+    [_INIT_CALL_BOUND_METHOD_EXACT_ARGS] = "_INIT_CALL_BOUND_METHOD_EXACT_ARGS",
+    [_CHECK_PEP_523] = "_CHECK_PEP_523",
+    [_CHECK_FUNCTION_EXACT_ARGS] = "_CHECK_FUNCTION_EXACT_ARGS",
+    [_CHECK_STACK_SPACE] = "_CHECK_STACK_SPACE",
+    [_INIT_CALL_PY_EXACT_ARGS] = "_INIT_CALL_PY_EXACT_ARGS",
+    [_PUSH_FRAME] = "_PUSH_FRAME",
+    [_SPECIALIZE_BINARY_OP] = "_SPECIALIZE_BINARY_OP",
+    [_BINARY_OP] = "_BINARY_OP",
+    [_GUARD_IS_TRUE_POP] = "_GUARD_IS_TRUE_POP",
+    [_GUARD_IS_FALSE_POP] = "_GUARD_IS_FALSE_POP",
+    [_GUARD_IS_NONE_POP] = "_GUARD_IS_NONE_POP",
+    [_GUARD_IS_NOT_NONE_POP] = "_GUARD_IS_NOT_NONE_POP",
+    [_JUMP_TO_TOP] = "_JUMP_TO_TOP",
+    [_SAVE_RETURN_OFFSET] = "_SAVE_RETURN_OFFSET",
+    [_INSERT] = "_INSERT",
+    [_CHECK_VALIDITY] = "_CHECK_VALIDITY",
+};
+#endif // NEED_OPCODE_METADATA
+
+extern const char *const _PyOpcode_OpName[268];
+#ifdef NEED_OPCODE_METADATA
+const char *const _PyOpcode_OpName[268] = {
+    [CACHE] = "CACHE",
+    [RESERVED] = "RESERVED",
+    [RESUME] = "RESUME",
+    [BEFORE_ASYNC_WITH] = "BEFORE_ASYNC_WITH",
+    [BEFORE_WITH] = "BEFORE_WITH",
+    [BINARY_OP_INPLACE_ADD_UNICODE] = "BINARY_OP_INPLACE_ADD_UNICODE",
+    [BINARY_SLICE] = "BINARY_SLICE",
+    [BINARY_SUBSCR] = "BINARY_SUBSCR",
+    [CHECK_EG_MATCH] = "CHECK_EG_MATCH",
+    [CHECK_EXC_MATCH] = "CHECK_EXC_MATCH",
+    [CLEANUP_THROW] = "CLEANUP_THROW",
+    [DELETE_SUBSCR] = "DELETE_SUBSCR",
+    [END_ASYNC_FOR] = "END_ASYNC_FOR",
+    [END_FOR] = "END_FOR",
+    [END_SEND] = "END_SEND",
+    [EXIT_INIT_CHECK] = "EXIT_INIT_CHECK",
+    [FORMAT_SIMPLE] = "FORMAT_SIMPLE",
+    [FORMAT_WITH_SPEC] = "FORMAT_WITH_SPEC",
+    [GET_AITER] = "GET_AITER",
+    [GET_ANEXT] = "GET_ANEXT",
+    [GET_ITER] = "GET_ITER",
+    [GET_LEN] = "GET_LEN",
+    [GET_YIELD_FROM_ITER] = "GET_YIELD_FROM_ITER",
+    [INTERPRETER_EXIT] = "INTERPRETER_EXIT",
+    [LOAD_ASSERTION_ERROR] = "LOAD_ASSERTION_ERROR",
+    [LOAD_BUILD_CLASS] = "LOAD_BUILD_CLASS",
+    [LOAD_LOCALS] = "LOAD_LOCALS",
+    [MAKE_FUNCTION] = "MAKE_FUNCTION",
+    [MATCH_KEYS] = "MATCH_KEYS",
+    [MATCH_MAPPING] = "MATCH_MAPPING",
+    [MATCH_SEQUENCE] = "MATCH_SEQUENCE",
+    [NOP] = "NOP",
+    [POP_EXCEPT] = "POP_EXCEPT",
+    [POP_TOP] = "POP_TOP",
+    [PUSH_EXC_INFO] = "PUSH_EXC_INFO",
+    [PUSH_NULL] = "PUSH_NULL",
+    [RETURN_GENERATOR] = "RETURN_GENERATOR",
+    [RETURN_VALUE] = "RETURN_VALUE",
+    [SETUP_ANNOTATIONS] = "SETUP_ANNOTATIONS",
+    [STORE_SLICE] = "STORE_SLICE",
+    [STORE_SUBSCR] = "STORE_SUBSCR",
+    [TO_BOOL] = "TO_BOOL",
+    [UNARY_INVERT] = "UNARY_INVERT",
+    [UNARY_NEGATIVE] = "UNARY_NEGATIVE",
+    [UNARY_NOT] = "UNARY_NOT",
+    [WITH_EXCEPT_START] = "WITH_EXCEPT_START",
+    [BINARY_OP] = "BINARY_OP",
+    [BUILD_CONST_KEY_MAP] = "BUILD_CONST_KEY_MAP",
+    [BUILD_LIST] = "BUILD_LIST",
+    [BUILD_MAP] = "BUILD_MAP",
+    [BUILD_SET] = "BUILD_SET",
+    [BUILD_SLICE] = "BUILD_SLICE",
+    [BUILD_STRING] = "BUILD_STRING",
+    [BUILD_TUPLE] = "BUILD_TUPLE",
+    [CALL] = "CALL",
+    [CALL_FUNCTION_EX] = "CALL_FUNCTION_EX",
+    [CALL_INTRINSIC_1] = "CALL_INTRINSIC_1",
+    [CALL_INTRINSIC_2] = "CALL_INTRINSIC_2",
+    [CALL_KW] = "CALL_KW",
+    [COMPARE_OP] = "COMPARE_OP",
+    [CONTAINS_OP] = "CONTAINS_OP",
+    [CONVERT_VALUE] = "CONVERT_VALUE",
+    [COPY] = "COPY",
+    [COPY_FREE_VARS] = "COPY_FREE_VARS",
+    [DELETE_ATTR] = "DELETE_ATTR",
+    [DELETE_DEREF] = "DELETE_DEREF",
+    [DELETE_FAST] = "DELETE_FAST",
+    [DELETE_GLOBAL] = "DELETE_GLOBAL",
+    [DELETE_NAME] = "DELETE_NAME",
+    [DICT_MERGE] = "DICT_MERGE",
+    [DICT_UPDATE] = "DICT_UPDATE",
+    [ENTER_EXECUTOR] = "ENTER_EXECUTOR",
+    [EXTENDED_ARG] = "EXTENDED_ARG",
+    [FOR_ITER] = "FOR_ITER",
+    [GET_AWAITABLE] = "GET_AWAITABLE",
+    [IMPORT_FROM] = "IMPORT_FROM",
+    [IMPORT_NAME] = "IMPORT_NAME",
+    [IS_OP] = "IS_OP",
+    [JUMP_BACKWARD] = "JUMP_BACKWARD",
+    [JUMP_BACKWARD_NO_INTERRUPT] = "JUMP_BACKWARD_NO_INTERRUPT",
+    [JUMP_FORWARD] = "JUMP_FORWARD",
+    [LIST_APPEND] = "LIST_APPEND",
+    [LIST_EXTEND] = "LIST_EXTEND",
+    [LOAD_ATTR] = "LOAD_ATTR",
+    [LOAD_CONST] = "LOAD_CONST",
+    [LOAD_DEREF] = "LOAD_DEREF",
+    [LOAD_FAST] = "LOAD_FAST",
+    [LOAD_FAST_AND_CLEAR] = "LOAD_FAST_AND_CLEAR",
+    [LOAD_FAST_CHECK] = "LOAD_FAST_CHECK",
+    [LOAD_FAST_LOAD_FAST] = "LOAD_FAST_LOAD_FAST",
+    [LOAD_FROM_DICT_OR_DEREF] = "LOAD_FROM_DICT_OR_DEREF",
+    [LOAD_FROM_DICT_OR_GLOBALS] = "LOAD_FROM_DICT_OR_GLOBALS",
+    [LOAD_GLOBAL] = "LOAD_GLOBAL",
+    [LOAD_NAME] = "LOAD_NAME",
+    [LOAD_SUPER_ATTR] = "LOAD_SUPER_ATTR",
+    [MAKE_CELL] = "MAKE_CELL",
+    [MAP_ADD] = "MAP_ADD",
+    [MATCH_CLASS] = "MATCH_CLASS",
+    [POP_JUMP_IF_FALSE] = "POP_JUMP_IF_FALSE",
+    [POP_JUMP_IF_NONE] = "POP_JUMP_IF_NONE",
+    [POP_JUMP_IF_NOT_NONE] = "POP_JUMP_IF_NOT_NONE",
+    [POP_JUMP_IF_TRUE] = "POP_JUMP_IF_TRUE",
+    [RAISE_VARARGS] = "RAISE_VARARGS",
+    [RERAISE] = "RERAISE",
+    [RETURN_CONST] = "RETURN_CONST",
+    [SEND] = "SEND",
+    [SET_ADD] = "SET_ADD",
+    [SET_FUNCTION_ATTRIBUTE] = "SET_FUNCTION_ATTRIBUTE",
+    [SET_UPDATE] = "SET_UPDATE",
+    [STORE_ATTR] = "STORE_ATTR",
+    [STORE_DEREF] = "STORE_DEREF",
+    [STORE_FAST] = "STORE_FAST",
+    [STORE_FAST_LOAD_FAST] = "STORE_FAST_LOAD_FAST",
+    [STORE_FAST_STORE_FAST] = "STORE_FAST_STORE_FAST",
+    [STORE_GLOBAL] = "STORE_GLOBAL",
+    [STORE_NAME] = "STORE_NAME",
+    [SWAP] = "SWAP",
+    [UNPACK_EX] = "UNPACK_EX",
+    [UNPACK_SEQUENCE] = "UNPACK_SEQUENCE",
+    [YIELD_VALUE] = "YIELD_VALUE",
+    [BINARY_OP_ADD_FLOAT] = "BINARY_OP_ADD_FLOAT",
+    [BINARY_OP_ADD_INT] = "BINARY_OP_ADD_INT",
+    [BINARY_OP_ADD_UNICODE] = "BINARY_OP_ADD_UNICODE",
+    [BINARY_OP_MULTIPLY_FLOAT] = "BINARY_OP_MULTIPLY_FLOAT",
+    [BINARY_OP_MULTIPLY_INT] = "BINARY_OP_MULTIPLY_INT",
+    [BINARY_OP_SUBTRACT_FLOAT] = "BINARY_OP_SUBTRACT_FLOAT",
+    [BINARY_OP_SUBTRACT_INT] = "BINARY_OP_SUBTRACT_INT",
+    [BINARY_SUBSCR_DICT] = "BINARY_SUBSCR_DICT",
+    [BINARY_SUBSCR_GETITEM] = "BINARY_SUBSCR_GETITEM",
+    [BINARY_SUBSCR_LIST_INT] = "BINARY_SUBSCR_LIST_INT",
+    [BINARY_SUBSCR_STR_INT] = "BINARY_SUBSCR_STR_INT",
+    [BINARY_SUBSCR_TUPLE_INT] = "BINARY_SUBSCR_TUPLE_INT",
+    [CALL_ALLOC_AND_ENTER_INIT] = "CALL_ALLOC_AND_ENTER_INIT",
+    [CALL_BOUND_METHOD_EXACT_ARGS] = "CALL_BOUND_METHOD_EXACT_ARGS",
+    [CALL_BUILTIN_CLASS] = "CALL_BUILTIN_CLASS",
+    [CALL_BUILTIN_FAST] = "CALL_BUILTIN_FAST",
+    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = "CALL_BUILTIN_FAST_WITH_KEYWORDS",
+    [CALL_BUILTIN_O] = "CALL_BUILTIN_O",
+    [CALL_ISINSTANCE] = "CALL_ISINSTANCE",
+    [CALL_LEN] = "CALL_LEN",
+    [CALL_LIST_APPEND] = "CALL_LIST_APPEND",
+    [CALL_METHOD_DESCRIPTOR_FAST] = "CALL_METHOD_DESCRIPTOR_FAST",
+    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = "CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS",
+    [CALL_METHOD_DESCRIPTOR_NOARGS] = "CALL_METHOD_DESCRIPTOR_NOARGS",
+    [CALL_METHOD_DESCRIPTOR_O] = "CALL_METHOD_DESCRIPTOR_O",
+    [CALL_PY_EXACT_ARGS] = "CALL_PY_EXACT_ARGS",
+    [CALL_PY_WITH_DEFAULTS] = "CALL_PY_WITH_DEFAULTS",
+    [CALL_STR_1] = "CALL_STR_1",
+    [CALL_TUPLE_1] = "CALL_TUPLE_1",
+    [CALL_TYPE_1] = "CALL_TYPE_1",
+    [COMPARE_OP_FLOAT] = "COMPARE_OP_FLOAT",
+    [COMPARE_OP_INT] = "COMPARE_OP_INT",
+    [COMPARE_OP_STR] = "COMPARE_OP_STR",
+    [FOR_ITER_GEN] = "FOR_ITER_GEN",
+    [FOR_ITER_LIST] = "FOR_ITER_LIST",
+    [FOR_ITER_RANGE] = "FOR_ITER_RANGE",
+    [FOR_ITER_TUPLE] = "FOR_ITER_TUPLE",
+    [LOAD_ATTR_CLASS] = "LOAD_ATTR_CLASS",
+    [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
+    [LOAD_ATTR_INSTANCE_VALUE] = "LOAD_ATTR_INSTANCE_VALUE",
+    [LOAD_ATTR_METHOD_LAZY_DICT] = "LOAD_ATTR_METHOD_LAZY_DICT",
+    [LOAD_ATTR_METHOD_NO_DICT] = "LOAD_ATTR_METHOD_NO_DICT",
+    [LOAD_ATTR_METHOD_WITH_VALUES] = "LOAD_ATTR_METHOD_WITH_VALUES",
+    [LOAD_ATTR_MODULE] = "LOAD_ATTR_MODULE",
+    [LOAD_ATTR_NONDESCRIPTOR_NO_DICT] = "LOAD_ATTR_NONDESCRIPTOR_NO_DICT",
+    [LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES] = "LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES",
+    [LOAD_ATTR_PROPERTY] = "LOAD_ATTR_PROPERTY",
+    [LOAD_ATTR_SLOT] = "LOAD_ATTR_SLOT",
+    [LOAD_ATTR_WITH_HINT] = "LOAD_ATTR_WITH_HINT",
+    [LOAD_GLOBAL_BUILTIN] = "LOAD_GLOBAL_BUILTIN",
+    [LOAD_GLOBAL_MODULE] = "LOAD_GLOBAL_MODULE",
+    [LOAD_SUPER_ATTR_ATTR] = "LOAD_SUPER_ATTR_ATTR",
+    [LOAD_SUPER_ATTR_METHOD] = "LOAD_SUPER_ATTR_METHOD",
+    [RESUME_CHECK] = "RESUME_CHECK",
+    [SEND_GEN] = "SEND_GEN",
+    [STORE_ATTR_INSTANCE_VALUE] = "STORE_ATTR_INSTANCE_VALUE",
+    [STORE_ATTR_SLOT] = "STORE_ATTR_SLOT",
+    [STORE_ATTR_WITH_HINT] = "STORE_ATTR_WITH_HINT",
+    [STORE_SUBSCR_DICT] = "STORE_SUBSCR_DICT",
+    [STORE_SUBSCR_LIST_INT] = "STORE_SUBSCR_LIST_INT",
+    [TO_BOOL_ALWAYS_TRUE] = "TO_BOOL_ALWAYS_TRUE",
+    [TO_BOOL_BOOL] = "TO_BOOL_BOOL",
+    [TO_BOOL_INT] = "TO_BOOL_INT",
+    [TO_BOOL_LIST] = "TO_BOOL_LIST",
+    [TO_BOOL_NONE] = "TO_BOOL_NONE",
+    [TO_BOOL_STR] = "TO_BOOL_STR",
+    [UNPACK_SEQUENCE_LIST] = "UNPACK_SEQUENCE_LIST",
+    [UNPACK_SEQUENCE_TUPLE] = "UNPACK_SEQUENCE_TUPLE",
+    [UNPACK_SEQUENCE_TWO_TUPLE] = "UNPACK_SEQUENCE_TWO_TUPLE",
+    [INSTRUMENTED_RESUME] = "INSTRUMENTED_RESUME",
+    [INSTRUMENTED_END_FOR] = "INSTRUMENTED_END_FOR",
+    [INSTRUMENTED_END_SEND] = "INSTRUMENTED_END_SEND",
+    [INSTRUMENTED_RETURN_VALUE] = "INSTRUMENTED_RETURN_VALUE",
+    [INSTRUMENTED_RETURN_CONST] = "INSTRUMENTED_RETURN_CONST",
+    [INSTRUMENTED_YIELD_VALUE] = "INSTRUMENTED_YIELD_VALUE",
+    [INSTRUMENTED_LOAD_SUPER_ATTR] = "INSTRUMENTED_LOAD_SUPER_ATTR",
+    [INSTRUMENTED_FOR_ITER] = "INSTRUMENTED_FOR_ITER",
+    [INSTRUMENTED_CALL] = "INSTRUMENTED_CALL",
+    [INSTRUMENTED_CALL_KW] = "INSTRUMENTED_CALL_KW",
+    [INSTRUMENTED_CALL_FUNCTION_EX] = "INSTRUMENTED_CALL_FUNCTION_EX",
+    [INSTRUMENTED_INSTRUCTION] = "INSTRUMENTED_INSTRUCTION",
+    [INSTRUMENTED_JUMP_FORWARD] = "INSTRUMENTED_JUMP_FORWARD",
+    [INSTRUMENTED_JUMP_BACKWARD] = "INSTRUMENTED_JUMP_BACKWARD",
+    [INSTRUMENTED_POP_JUMP_IF_TRUE] = "INSTRUMENTED_POP_JUMP_IF_TRUE",
+    [INSTRUMENTED_POP_JUMP_IF_FALSE] = "INSTRUMENTED_POP_JUMP_IF_FALSE",
+    [INSTRUMENTED_POP_JUMP_IF_NONE] = "INSTRUMENTED_POP_JUMP_IF_NONE",
+    [INSTRUMENTED_POP_JUMP_IF_NOT_NONE] = "INSTRUMENTED_POP_JUMP_IF_NOT_NONE",
+    [INSTRUMENTED_LINE] = "INSTRUMENTED_LINE",
+    [JUMP] = "JUMP",
+    [JUMP_NO_INTERRUPT] = "JUMP_NO_INTERRUPT",
+    [LOAD_CLOSURE] = "LOAD_CLOSURE",
+    [LOAD_METHOD] = "LOAD_METHOD",
+    [LOAD_SUPER_METHOD] = "LOAD_SUPER_METHOD",
+    [LOAD_ZERO_SUPER_ATTR] = "LOAD_ZERO_SUPER_ATTR",
+    [LOAD_ZERO_SUPER_METHOD] = "LOAD_ZERO_SUPER_METHOD",
+    [POP_BLOCK] = "POP_BLOCK",
+    [SETUP_CLEANUP] = "SETUP_CLEANUP",
+    [SETUP_FINALLY] = "SETUP_FINALLY",
+    [SETUP_WITH] = "SETUP_WITH",
+    [STORE_FAST_MAYBE_NULL] = "STORE_FAST_MAYBE_NULL",
+};
+#endif // NEED_OPCODE_METADATA
+
+extern const uint8_t _PyOpcode_Caches[256];
+#ifdef NEED_OPCODE_METADATA
+const uint8_t _PyOpcode_Caches[256] = {
+    [TO_BOOL] = 3,
+    [BINARY_OP_INPLACE_ADD_UNICODE] = 1,
+    [BINARY_SUBSCR] = 1,
+    [STORE_SUBSCR] = 1,
+    [SEND] = 1,
+    [UNPACK_SEQUENCE] = 1,
+    [STORE_ATTR] = 4,
+    [LOAD_GLOBAL] = 4,
+    [LOAD_SUPER_ATTR] = 1,
+    [LOAD_ATTR] = 9,
+    [COMPARE_OP] = 1,
+    [JUMP_BACKWARD] = 1,
+    [POP_JUMP_IF_TRUE] = 1,
+    [POP_JUMP_IF_FALSE] = 1,
+    [POP_JUMP_IF_NONE] = 1,
+    [POP_JUMP_IF_NOT_NONE] = 1,
+    [FOR_ITER] = 1,
+    [CALL] = 3,
+    [BINARY_OP] = 1,
+};
+#endif // NEED_OPCODE_METADATA
+
+extern const uint8_t _PyOpcode_Deopt[256];
+#ifdef NEED_OPCODE_METADATA
+const uint8_t _PyOpcode_Deopt[256] = {
+    [BEFORE_ASYNC_WITH] = BEFORE_ASYNC_WITH,
+    [BEFORE_WITH] = BEFORE_WITH,
+    [BINARY_OP] = BINARY_OP,
+    [BINARY_OP_ADD_FLOAT] = BINARY_OP,
+    [BINARY_OP_ADD_INT] = BINARY_OP,
+    [BINARY_OP_ADD_UNICODE] = BINARY_OP,
+    [BINARY_OP_INPLACE_ADD_UNICODE] = BINARY_OP,
+    [BINARY_OP_MULTIPLY_FLOAT] = BINARY_OP,
+    [BINARY_OP_MULTIPLY_INT] = BINARY_OP,
+    [BINARY_OP_SUBTRACT_FLOAT] = BINARY_OP,
+    [BINARY_OP_SUBTRACT_INT] = BINARY_OP,
+    [BINARY_SLICE] = BINARY_SLICE,
+    [BINARY_SUBSCR] = BINARY_SUBSCR,
+    [BINARY_SUBSCR_DICT] = BINARY_SUBSCR,
+    [BINARY_SUBSCR_GETITEM] = BINARY_SUBSCR,
+    [BINARY_SUBSCR_LIST_INT] = BINARY_SUBSCR,
+    [BINARY_SUBSCR_STR_INT] = BINARY_SUBSCR,
+    [BINARY_SUBSCR_TUPLE_INT] = BINARY_SUBSCR,
+    [BUILD_CONST_KEY_MAP] = BUILD_CONST_KEY_MAP,
+    [BUILD_LIST] = BUILD_LIST,
+    [BUILD_MAP] = BUILD_MAP,
+    [BUILD_SET] = BUILD_SET,
+    [BUILD_SLICE] = BUILD_SLICE,
+    [BUILD_STRING] = BUILD_STRING,
+    [BUILD_TUPLE] = BUILD_TUPLE,
+    [CACHE] = CACHE,
+    [CALL] = CALL,
+    [CALL_ALLOC_AND_ENTER_INIT] = CALL,
+    [CALL_BOUND_METHOD_EXACT_ARGS] = CALL,
+    [CALL_BUILTIN_CLASS] = CALL,
+    [CALL_BUILTIN_FAST] = CALL,
+    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = CALL,
+    [CALL_BUILTIN_O] = CALL,
+    [CALL_FUNCTION_EX] = CALL_FUNCTION_EX,
+    [CALL_INTRINSIC_1] = CALL_INTRINSIC_1,
+    [CALL_INTRINSIC_2] = CALL_INTRINSIC_2,
+    [CALL_ISINSTANCE] = CALL,
+    [CALL_KW] = CALL_KW,
+    [CALL_LEN] = CALL,
+    [CALL_LIST_APPEND] = CALL,
+    [CALL_METHOD_DESCRIPTOR_FAST] = CALL,
+    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = CALL,
+    [CALL_METHOD_DESCRIPTOR_NOARGS] = CALL,
+    [CALL_METHOD_DESCRIPTOR_O] = CALL,
+    [CALL_PY_EXACT_ARGS] = CALL,
+    [CALL_PY_WITH_DEFAULTS] = CALL,
+    [CALL_STR_1] = CALL,
+    [CALL_TUPLE_1] = CALL,
+    [CALL_TYPE_1] = CALL,
+    [CHECK_EG_MATCH] = CHECK_EG_MATCH,
+    [CHECK_EXC_MATCH] = CHECK_EXC_MATCH,
+    [CLEANUP_THROW] = CLEANUP_THROW,
+    [COMPARE_OP] = COMPARE_OP,
+    [COMPARE_OP_FLOAT] = COMPARE_OP,
+    [COMPARE_OP_INT] = COMPARE_OP,
+    [COMPARE_OP_STR] = COMPARE_OP,
+    [CONTAINS_OP] = CONTAINS_OP,
+    [CONVERT_VALUE] = CONVERT_VALUE,
+    [COPY] = COPY,
+    [COPY_FREE_VARS] = COPY_FREE_VARS,
+    [DELETE_ATTR] = DELETE_ATTR,
+    [DELETE_DEREF] = DELETE_DEREF,
+    [DELETE_FAST] = DELETE_FAST,
+    [DELETE_GLOBAL] = DELETE_GLOBAL,
+    [DELETE_NAME] = DELETE_NAME,
+    [DELETE_SUBSCR] = DELETE_SUBSCR,
+    [DICT_MERGE] = DICT_MERGE,
+    [DICT_UPDATE] = DICT_UPDATE,
+    [END_ASYNC_FOR] = END_ASYNC_FOR,
+    [END_FOR] = END_FOR,
+    [END_SEND] = END_SEND,
+    [ENTER_EXECUTOR] = ENTER_EXECUTOR,
+    [EXIT_INIT_CHECK] = EXIT_INIT_CHECK,
+    [EXTENDED_ARG] = EXTENDED_ARG,
+    [FORMAT_SIMPLE] = FORMAT_SIMPLE,
+    [FORMAT_WITH_SPEC] = FORMAT_WITH_SPEC,
+    [FOR_ITER] = FOR_ITER,
+    [FOR_ITER_GEN] = FOR_ITER,
+    [FOR_ITER_LIST] = FOR_ITER,
+    [FOR_ITER_RANGE] = FOR_ITER,
+    [FOR_ITER_TUPLE] = FOR_ITER,
+    [GET_AITER] = GET_AITER,
+    [GET_ANEXT] = GET_ANEXT,
+    [GET_AWAITABLE] = GET_AWAITABLE,
+    [GET_ITER] = GET_ITER,
+    [GET_LEN] = GET_LEN,
+    [GET_YIELD_FROM_ITER] = GET_YIELD_FROM_ITER,
+    [IMPORT_FROM] = IMPORT_FROM,
+    [IMPORT_NAME] = IMPORT_NAME,
+    [INSTRUMENTED_CALL] = INSTRUMENTED_CALL,
+    [INSTRUMENTED_CALL_FUNCTION_EX] = INSTRUMENTED_CALL_FUNCTION_EX,
+    [INSTRUMENTED_CALL_KW] = INSTRUMENTED_CALL_KW,
+    [INSTRUMENTED_END_FOR] = INSTRUMENTED_END_FOR,
+    [INSTRUMENTED_END_SEND] = INSTRUMENTED_END_SEND,
+    [INSTRUMENTED_FOR_ITER] = INSTRUMENTED_FOR_ITER,
+    [INSTRUMENTED_INSTRUCTION] = INSTRUMENTED_INSTRUCTION,
+    [INSTRUMENTED_JUMP_BACKWARD] = INSTRUMENTED_JUMP_BACKWARD,
+    [INSTRUMENTED_JUMP_FORWARD] = INSTRUMENTED_JUMP_FORWARD,
+    [INSTRUMENTED_LINE] = INSTRUMENTED_LINE,
+    [INSTRUMENTED_LOAD_SUPER_ATTR] = INSTRUMENTED_LOAD_SUPER_ATTR,
+    [INSTRUMENTED_POP_JUMP_IF_FALSE] = INSTRUMENTED_POP_JUMP_IF_FALSE,
+    [INSTRUMENTED_POP_JUMP_IF_NONE] = INSTRUMENTED_POP_JUMP_IF_NONE,
+    [INSTRUMENTED_POP_JUMP_IF_NOT_NONE] = INSTRUMENTED_POP_JUMP_IF_NOT_NONE,
+    [INSTRUMENTED_POP_JUMP_IF_TRUE] = INSTRUMENTED_POP_JUMP_IF_TRUE,
+    [INSTRUMENTED_RESUME] = INSTRUMENTED_RESUME,
+    [INSTRUMENTED_RETURN_CONST] = INSTRUMENTED_RETURN_CONST,
+    [INSTRUMENTED_RETURN_VALUE] = INSTRUMENTED_RETURN_VALUE,
+    [INSTRUMENTED_YIELD_VALUE] = INSTRUMENTED_YIELD_VALUE,
+    [INTERPRETER_EXIT] = INTERPRETER_EXIT,
+    [IS_OP] = IS_OP,
+    [JUMP_BACKWARD] = JUMP_BACKWARD,
+    [JUMP_BACKWARD_NO_INTERRUPT] = JUMP_BACKWARD_NO_INTERRUPT,
+    [JUMP_FORWARD] = JUMP_FORWARD,
+    [LIST_APPEND] = LIST_APPEND,
+    [LIST_EXTEND] = LIST_EXTEND,
+    [LOAD_ASSERTION_ERROR] = LOAD_ASSERTION_ERROR,
+    [LOAD_ATTR] = LOAD_ATTR,
+    [LOAD_ATTR_CLASS] = LOAD_ATTR,
+    [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = LOAD_ATTR,
+    [LOAD_ATTR_INSTANCE_VALUE] = LOAD_ATTR,
+    [LOAD_ATTR_METHOD_LAZY_DICT] = LOAD_ATTR,
+    [LOAD_ATTR_METHOD_NO_DICT] = LOAD_ATTR,
+    [LOAD_ATTR_METHOD_WITH_VALUES] = LOAD_ATTR,
+    [LOAD_ATTR_MODULE] = LOAD_ATTR,
+    [LOAD_ATTR_NONDESCRIPTOR_NO_DICT] = LOAD_ATTR,
+    [LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES] = LOAD_ATTR,
+    [LOAD_ATTR_PROPERTY] = LOAD_ATTR,
+    [LOAD_ATTR_SLOT] = LOAD_ATTR,
+    [LOAD_ATTR_WITH_HINT] = LOAD_ATTR,
+    [LOAD_BUILD_CLASS] = LOAD_BUILD_CLASS,
+    [LOAD_CONST] = LOAD_CONST,
+    [LOAD_DEREF] = LOAD_DEREF,
+    [LOAD_FAST] = LOAD_FAST,
+    [LOAD_FAST_AND_CLEAR] = LOAD_FAST_AND_CLEAR,
+    [LOAD_FAST_CHECK] = LOAD_FAST_CHECK,
+    [LOAD_FAST_LOAD_FAST] = LOAD_FAST_LOAD_FAST,
+    [LOAD_FROM_DICT_OR_DEREF] = LOAD_FROM_DICT_OR_DEREF,
+    [LOAD_FROM_DICT_OR_GLOBALS] = LOAD_FROM_DICT_OR_GLOBALS,
+    [LOAD_GLOBAL] = LOAD_GLOBAL,
+    [LOAD_GLOBAL_BUILTIN] = LOAD_GLOBAL,
+    [LOAD_GLOBAL_MODULE] = LOAD_GLOBAL,
+    [LOAD_LOCALS] = LOAD_LOCALS,
+    [LOAD_NAME] = LOAD_NAME,
+    [LOAD_SUPER_ATTR] = LOAD_SUPER_ATTR,
+    [LOAD_SUPER_ATTR_ATTR] = LOAD_SUPER_ATTR,
+    [LOAD_SUPER_ATTR_METHOD] = LOAD_SUPER_ATTR,
+    [MAKE_CELL] = MAKE_CELL,
+    [MAKE_FUNCTION] = MAKE_FUNCTION,
+    [MAP_ADD] = MAP_ADD,
+    [MATCH_CLASS] = MATCH_CLASS,
+    [MATCH_KEYS] = MATCH_KEYS,
+    [MATCH_MAPPING] = MATCH_MAPPING,
+    [MATCH_SEQUENCE] = MATCH_SEQUENCE,
+    [NOP] = NOP,
+    [POP_EXCEPT] = POP_EXCEPT,
+    [POP_JUMP_IF_FALSE] = POP_JUMP_IF_FALSE,
+    [POP_JUMP_IF_NONE] = POP_JUMP_IF_NONE,
+    [POP_JUMP_IF_NOT_NONE] = POP_JUMP_IF_NOT_NONE,
+    [POP_JUMP_IF_TRUE] = POP_JUMP_IF_TRUE,
+    [POP_TOP] = POP_TOP,
+    [PUSH_EXC_INFO] = PUSH_EXC_INFO,
+    [PUSH_NULL] = PUSH_NULL,
+    [RAISE_VARARGS] = RAISE_VARARGS,
+    [RERAISE] = RERAISE,
+    [RESERVED] = RESERVED,
+    [RESUME] = RESUME,
+    [RESUME_CHECK] = RESUME,
+    [RETURN_CONST] = RETURN_CONST,
+    [RETURN_GENERATOR] = RETURN_GENERATOR,
+    [RETURN_VALUE] = RETURN_VALUE,
+    [SEND] = SEND,
+    [SEND_GEN] = SEND,
+    [SETUP_ANNOTATIONS] = SETUP_ANNOTATIONS,
+    [SET_ADD] = SET_ADD,
+    [SET_FUNCTION_ATTRIBUTE] = SET_FUNCTION_ATTRIBUTE,
+    [SET_UPDATE] = SET_UPDATE,
+    [STORE_ATTR] = STORE_ATTR,
+    [STORE_ATTR_INSTANCE_VALUE] = STORE_ATTR,
+    [STORE_ATTR_SLOT] = STORE_ATTR,
+    [STORE_ATTR_WITH_HINT] = STORE_ATTR,
+    [STORE_DEREF] = STORE_DEREF,
+    [STORE_FAST] = STORE_FAST,
+    [STORE_FAST_LOAD_FAST] = STORE_FAST_LOAD_FAST,
+    [STORE_FAST_STORE_FAST] = STORE_FAST_STORE_FAST,
+    [STORE_GLOBAL] = STORE_GLOBAL,
+    [STORE_NAME] = STORE_NAME,
+    [STORE_SLICE] = STORE_SLICE,
+    [STORE_SUBSCR] = STORE_SUBSCR,
+    [STORE_SUBSCR_DICT] = STORE_SUBSCR,
+    [STORE_SUBSCR_LIST_INT] = STORE_SUBSCR,
+    [SWAP] = SWAP,
+    [TO_BOOL] = TO_BOOL,
+    [TO_BOOL_ALWAYS_TRUE] = TO_BOOL,
+    [TO_BOOL_BOOL] = TO_BOOL,
+    [TO_BOOL_INT] = TO_BOOL,
+    [TO_BOOL_LIST] = TO_BOOL,
+    [TO_BOOL_NONE] = TO_BOOL,
+    [TO_BOOL_STR] = TO_BOOL,
+    [UNARY_INVERT] = UNARY_INVERT,
+    [UNARY_NEGATIVE] = UNARY_NEGATIVE,
+    [UNARY_NOT] = UNARY_NOT,
+    [UNPACK_EX] = UNPACK_EX,
+    [UNPACK_SEQUENCE] = UNPACK_SEQUENCE,
+    [UNPACK_SEQUENCE_LIST] = UNPACK_SEQUENCE,
+    [UNPACK_SEQUENCE_TUPLE] = UNPACK_SEQUENCE,
+    [UNPACK_SEQUENCE_TWO_TUPLE] = UNPACK_SEQUENCE,
+    [WITH_EXCEPT_START] = WITH_EXCEPT_START,
+    [YIELD_VALUE] = YIELD_VALUE,
+};
+#endif // NEED_OPCODE_METADATA
+
+#define EXTRA_CASES \
+    case 119: \
+    case 120: \
+    case 121: \
+    case 122: \
+    case 123: \
+    case 124: \
+    case 125: \
+    case 126: \
+    case 127: \
+    case 128: \
+    case 129: \
+    case 130: \
+    case 131: \
+    case 132: \
+    case 133: \
+    case 134: \
+    case 135: \
+    case 136: \
+    case 137: \
+    case 138: \
+    case 139: \
+    case 140: \
+    case 141: \
+    case 142: \
+    case 143: \
+    case 144: \
+    case 145: \
+    case 146: \
+    case 147: \
+    case 148: \
+    case 219: \
+    case 220: \
+    case 221: \
+    case 222: \
+    case 223: \
+    case 224: \
+    case 225: \
+    case 226: \
+    case 227: \
+    case 228: \
+    case 229: \
+    case 230: \
+    case 231: \
+    case 232: \
+    case 233: \
+    case 234: \
+    case 235: \
+    case 255: \
+        ;
+
diff --git a/Include/internal/pycore_opcode_utils.h b/Include/internal/pycore_opcode_utils.h
index 1d5ff988290bd4..208bfb2f75308b 100644
--- a/Include/internal/pycore_opcode_utils.h
+++ b/Include/internal/pycore_opcode_utils.h
@@ -8,17 +8,13 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_opcode.h"        // _PyOpcode_Jump
-
+#include "opcode_ids.h"
 
 #define MAX_REAL_OPCODE 254
 
 #define IS_WITHIN_OPCODE_RANGE(opcode) \
         (((opcode) >= 0 && (opcode) <= MAX_REAL_OPCODE) || \
-         IS_PSEUDO_OPCODE(opcode))
-
-#define IS_JUMP_OPCODE(opcode) \
-         is_bit_set_in_table(_PyOpcode_Jump, opcode)
+         IS_PSEUDO_INSTR(opcode))
 
 #define IS_BLOCK_PUSH_OPCODE(opcode) \
         ((opcode) == SETUP_FINALLY || \
@@ -26,11 +22,11 @@ extern "C" {
          (opcode) == SETUP_CLEANUP)
 
 #define HAS_TARGET(opcode) \
-        (IS_JUMP_OPCODE(opcode) || IS_BLOCK_PUSH_OPCODE(opcode))
+        (OPCODE_HAS_JUMP(opcode) || IS_BLOCK_PUSH_OPCODE(opcode))
 
 /* opcodes that must be last in the basicblock */
 #define IS_TERMINATOR_OPCODE(opcode) \
-        (IS_JUMP_OPCODE(opcode) || IS_SCOPE_EXIT_OPCODE(opcode))
+        (OPCODE_HAS_JUMP(opcode) || IS_SCOPE_EXIT_OPCODE(opcode))
 
 /* opcodes which are not emitted in codegen stage, only by the assembler */
 #define IS_ASSEMBLER_OPCODE(opcode) \
@@ -55,36 +51,21 @@ extern "C" {
          (opcode) == RAISE_VARARGS || \
          (opcode) == RERAISE)
 
-#define IS_SUPERINSTRUCTION_OPCODE(opcode) \
-        ((opcode) == LOAD_FAST__LOAD_FAST || \
-         (opcode) == LOAD_FAST__LOAD_CONST || \
-         (opcode) == LOAD_CONST__LOAD_FAST || \
-         (opcode) == STORE_FAST__LOAD_FAST || \
-         (opcode) == STORE_FAST__STORE_FAST)
-
-
-#define LOG_BITS_PER_INT 5
-#define MASK_LOW_LOG_BITS 31
-
-static inline int
-is_bit_set_in_table(const uint32_t *table, int bitindex) {
-    /* Is the relevant bit set in the relevant word? */
-    /* 512 bits fit into 9 32-bits words.
-     * Word is indexed by (bitindex>>ln(size of int in bits)).
-     * Bit within word is the low bits of bitindex.
-     */
-    if (bitindex >= 0 && bitindex < 512) {
-        uint32_t word = table[bitindex >> LOG_BITS_PER_INT];
-        return (word >> (bitindex & MASK_LOW_LOG_BITS)) & 1;
-    }
-    else {
-        return 0;
-    }
-}
 
-#undef LOG_BITS_PER_INT
-#undef MASK_LOW_LOG_BITS
+/* Flags used in the oparg for MAKE_FUNCTION */
+#define MAKE_FUNCTION_DEFAULTS    0x01
+#define MAKE_FUNCTION_KWDEFAULTS  0x02
+#define MAKE_FUNCTION_ANNOTATIONS 0x04
+#define MAKE_FUNCTION_CLOSURE     0x08
+
+/* Values used in the oparg for RESUME */
+#define RESUME_AT_FUNC_START 0
+#define RESUME_AFTER_YIELD 1
+#define RESUME_AFTER_YIELD_FROM 2
+#define RESUME_AFTER_AWAIT 3
 
+#define RESUME_OPARG_LOCATION_MASK 0x3
+#define RESUME_OPARG_DEPTH1_MASK 0x4
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_optimizer.h b/Include/internal/pycore_optimizer.h
new file mode 100644
index 00000000000000..b052460b44b791
--- /dev/null
+++ b/Include/internal/pycore_optimizer.h
@@ -0,0 +1,25 @@
+#ifndef Py_INTERNAL_OPTIMIZER_H
+#define Py_INTERNAL_OPTIMIZER_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_uops.h"          // _PyUOpInstruction
+
+int _Py_uop_analyze_and_optimize(PyCodeObject *code,
+    _PyUOpInstruction *trace, int trace_len, int curr_stackentries);
+
+extern PyTypeObject _PyCounterExecutor_Type;
+extern PyTypeObject _PyCounterOptimizer_Type;
+extern PyTypeObject _PyDefaultOptimizer_Type;
+extern PyTypeObject _PyUOpExecutor_Type;
+extern PyTypeObject _PyUOpOptimizer_Type;
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_OPTIMIZER_H */
diff --git a/Include/internal/pycore_parking_lot.h b/Include/internal/pycore_parking_lot.h
new file mode 100644
index 00000000000000..f444da730055e8
--- /dev/null
+++ b/Include/internal/pycore_parking_lot.h
@@ -0,0 +1,99 @@
+// ParkingLot is an internal API for building efficient synchronization
+// primitives like mutexes and events.
+//
+// The API and name is inspired by WebKit's WTF::ParkingLot, which in turn
+// is inspired Linux's futex API.
+// See https://webkit.org/blog/6161/locking-in-webkit/.
+//
+// The core functionality is an atomic "compare-and-sleep" operation along with
+// an atomic "wake-up" operation.
+
+#ifndef Py_INTERNAL_PARKING_LOT_H
+#define Py_INTERNAL_PARKING_LOT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_time.h"        // _PyTime_t
+
+
+enum {
+    // The thread was unparked by another thread.
+    Py_PARK_OK = 0,
+
+    // The value of `address` did not match `expected`.
+    Py_PARK_AGAIN = -1,
+
+    // The thread was unparked due to a timeout.
+    Py_PARK_TIMEOUT = -2,
+
+    // The thread was interrupted by a signal.
+    Py_PARK_INTR = -3,
+};
+
+// Checks that `*address == *expected` and puts the thread to sleep until an
+// unpark operation is called on the same `address`. Otherwise, the function
+// returns `Py_PARK_AGAIN`. The comparison behaves like memcmp, but is
+// performed atomically with respect to unpark operations.
+//
+// The `address_size` argument is the size of the data pointed to by the
+// `address` and `expected` pointers (i.e., sizeof(*address)). It must be
+// 1, 2, 4, or 8.
+//
+// The `timeout_ns` argument specifies the maximum amount of time to wait, with
+// -1 indicating an infinite wait.
+//
+// `park_arg`, which can be NULL, is passed to the unpark operation.
+//
+// If `detach` is true, then the thread will detach/release the GIL while
+// waiting.
+//
+// Example usage:
+//
+//  if (_Py_atomic_compare_exchange_uint8(address, &expected, new_value)) {
+//    int res = _PyParkingLot_Park(address, &new_value, sizeof(*address),
+//                                 timeout_ns, NULL, 1);
+//    ...
+//  }
+PyAPI_FUNC(int)
+_PyParkingLot_Park(const void *address, const void *expected,
+                   size_t address_size, _PyTime_t timeout_ns,
+                   void *park_arg, int detach);
+
+// Callback for _PyParkingLot_Unpark:
+//
+// `arg` is the data of the same name provided to the _PyParkingLot_Unpark()
+//      call.
+// `park_arg` is the data provided to _PyParkingLot_Park() call or NULL if
+//      no waiting thread was found.
+// `has_more_waiters` is true if there are more threads waiting on the same
+//      address. May be true in cases where threads are waiting on a different
+//      address that map to the same internal bucket.
+typedef void _Py_unpark_fn_t(void *arg, void *park_arg, int has_more_waiters);
+
+// Unparks a single thread waiting on `address`.
+//
+// Note that fn() is called regardless of whether a thread was unparked. If
+// no threads are waiting on `address` then the `park_arg` argument to fn()
+// will be NULL.
+//
+// Example usage:
+//  void callback(void *arg, void *park_arg, int has_more_waiters);
+//  _PyParkingLot_Unpark(address, &callback, arg);
+PyAPI_FUNC(void)
+_PyParkingLot_Unpark(const void *address, _Py_unpark_fn_t *fn, void *arg);
+
+// Unparks all threads waiting on `address`.
+PyAPI_FUNC(void) _PyParkingLot_UnparkAll(const void *address);
+
+// Resets the parking lot state after a fork. Forgets all parked threads.
+PyAPI_FUNC(void) _PyParkingLot_AfterFork(void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_PARKING_LOT_H */
diff --git a/Include/internal/pycore_parser.h b/Include/internal/pycore_parser.h
index dd51b92801aebf..067b34c12c4e7f 100644
--- a/Include/internal/pycore_parser.h
+++ b/Include/internal/pycore_parser.h
@@ -58,7 +58,17 @@ extern struct _mod* _PyParser_ASTFromFile(
     PyCompilerFlags *flags,
     int *errcode,
     PyArena *arena);
-
+extern struct _mod* _PyParser_InteractiveASTFromFile(
+    FILE *fp,
+    PyObject *filename_ob,
+    const char *enc,
+    int mode,
+    const char *ps1,
+    const char *ps2,
+    PyCompilerFlags *flags,
+    int *errcode,
+    PyObject **interactive_src,
+    PyArena *arena);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_pathconfig.h b/Include/internal/pycore_pathconfig.h
index b8deaa0c3eb067..a1ce1b19a00283 100644
--- a/Include/internal/pycore_pathconfig.h
+++ b/Include/internal/pycore_pathconfig.h
@@ -8,7 +8,9 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(void) _PyPathConfig_ClearGlobal(void);
+
 extern PyStatus _PyPathConfig_ReadGlobal(PyConfig *config);
 extern PyStatus _PyPathConfig_UpdateGlobal(const PyConfig *config);
 extern const wchar_t * _PyPathConfig_GetGlobalModuleSearchPath(void);
diff --git a/Include/internal/pycore_pyarena.h b/Include/internal/pycore_pyarena.h
index d78972a88ca238..1f07479fb2ca27 100644
--- a/Include/internal/pycore_pyarena.h
+++ b/Include/internal/pycore_pyarena.h
@@ -1,5 +1,4 @@
-/* An arena-like memory interface for the compiler.
- */
+// An arena-like memory interface for the compiler.
 
 #ifndef Py_INTERNAL_PYARENA_H
 #define Py_INTERNAL_PYARENA_H
@@ -13,49 +12,54 @@ extern "C" {
 
 typedef struct _arena PyArena;
 
-/* _PyArena_New() and _PyArena_Free() create a new arena and free it,
-   respectively.  Once an arena has been created, it can be used
-   to allocate memory via _PyArena_Malloc().  Pointers to PyObject can
-   also be registered with the arena via _PyArena_AddPyObject(), and the
-   arena will ensure that the PyObjects stay alive at least until
-   _PyArena_Free() is called.  When an arena is freed, all the memory it
-   allocated is freed, the arena releases internal references to registered
-   PyObject*, and none of its pointers are valid.
-   XXX (tim) What does "none of its pointers are valid" mean?  Does it
-   XXX mean that pointers previously obtained via _PyArena_Malloc() are
-   XXX no longer valid?  (That's clearly true, but not sure that's what
-   XXX the text is trying to say.)
-
-   _PyArena_New() returns an arena pointer.  On error, it
-   returns a negative number and sets an exception.
-   XXX (tim):  Not true.  On error, _PyArena_New() actually returns NULL,
-   XXX and looks like it may or may not set an exception (e.g., if the
-   XXX internal PyList_New(0) returns NULL, _PyArena_New() passes that on
-   XXX and an exception is set; OTOH, if the internal
-   XXX block_new(DEFAULT_BLOCK_SIZE) returns NULL, that's passed on but
-   XXX an exception is not set in that case).
-*/
+// _PyArena_New() and _PyArena_Free() create a new arena and free it,
+// respectively.  Once an arena has been created, it can be used
+// to allocate memory via _PyArena_Malloc().  Pointers to PyObject can
+// also be registered with the arena via _PyArena_AddPyObject(), and the
+// arena will ensure that the PyObjects stay alive at least until
+// _PyArena_Free() is called.  When an arena is freed, all the memory it
+// allocated is freed, the arena releases internal references to registered
+// PyObject*, and none of its pointers are valid.
+// XXX (tim) What does "none of its pointers are valid" mean?  Does it
+// XXX mean that pointers previously obtained via _PyArena_Malloc() are
+// XXX no longer valid?  (That's clearly true, but not sure that's what
+// XXX the text is trying to say.)
+//
+// _PyArena_New() returns an arena pointer.  On error, it
+// returns a negative number and sets an exception.
+// XXX (tim):  Not true.  On error, _PyArena_New() actually returns NULL,
+// XXX and looks like it may or may not set an exception (e.g., if the
+// XXX internal PyList_New(0) returns NULL, _PyArena_New() passes that on
+// XXX and an exception is set; OTOH, if the internal
+// XXX block_new(DEFAULT_BLOCK_SIZE) returns NULL, that's passed on but
+// XXX an exception is not set in that case).
+//
+// Export for test_peg_generator
 PyAPI_FUNC(PyArena*) _PyArena_New(void);
+
+// Export for test_peg_generator
 PyAPI_FUNC(void) _PyArena_Free(PyArena *);
 
-/* Mostly like malloc(), return the address of a block of memory spanning
- * `size` bytes, or return NULL (without setting an exception) if enough
- * new memory can't be obtained.  Unlike malloc(0), _PyArena_Malloc() with
- * size=0 does not guarantee to return a unique pointer (the pointer
- * returned may equal one or more other pointers obtained from
- * _PyArena_Malloc()).
- * Note that pointers obtained via _PyArena_Malloc() must never be passed to
- * the system free() or realloc(), or to any of Python's similar memory-
- * management functions.  _PyArena_Malloc()-obtained pointers remain valid
- * until _PyArena_Free(ar) is called, at which point all pointers obtained
- * from the arena `ar` become invalid simultaneously.
- */
+// Mostly like malloc(), return the address of a block of memory spanning
+// `size` bytes, or return NULL (without setting an exception) if enough
+// new memory can't be obtained.  Unlike malloc(0), _PyArena_Malloc() with
+// size=0 does not guarantee to return a unique pointer (the pointer
+// returned may equal one or more other pointers obtained from
+// _PyArena_Malloc()).
+// Note that pointers obtained via _PyArena_Malloc() must never be passed to
+// the system free() or realloc(), or to any of Python's similar memory-
+// management functions.  _PyArena_Malloc()-obtained pointers remain valid
+// until _PyArena_Free(ar) is called, at which point all pointers obtained
+// from the arena `ar` become invalid simultaneously.
+//
+// Export for test_peg_generator
 PyAPI_FUNC(void*) _PyArena_Malloc(PyArena *, size_t size);
 
-/* This routine isn't a proper arena allocation routine.  It takes
- * a PyObject* and records it so that it can be DECREFed when the
- * arena is freed.
- */
+// This routine isn't a proper arena allocation routine.  It takes
+// a PyObject* and records it so that it can be DECREFed when the
+// arena is freed.
+//
+// Export for test_peg_generator
 PyAPI_FUNC(int) _PyArena_AddPyObject(PyArena *, PyObject *);
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_pybuffer.h b/Include/internal/pycore_pybuffer.h
new file mode 100644
index 00000000000000..3cbc290b2ea3ee
--- /dev/null
+++ b/Include/internal/pycore_pybuffer.h
@@ -0,0 +1,21 @@
+#ifndef Py_INTERNAL_PYBUFFER_H
+#define Py_INTERNAL_PYBUFFER_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+
+// Exported for the _xxinterpchannels module.
+PyAPI_FUNC(int) _PyBuffer_ReleaseInInterpreter(
+        PyInterpreterState *interp, Py_buffer *view);
+PyAPI_FUNC(int) _PyBuffer_ReleaseInInterpreterAndRawFree(
+        PyInterpreterState *interp, Py_buffer *view);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_PYBUFFER_H */
diff --git a/Include/internal/pycore_pyerrors.h b/Include/internal/pycore_pyerrors.h
index 4620a269644917..0f16fb894d17e1 100644
--- a/Include/internal/pycore_pyerrors.h
+++ b/Include/internal/pycore_pyerrors.h
@@ -9,6 +9,59 @@ extern "C" {
 #endif
 
 
+/* Error handling definitions */
+
+extern _PyErr_StackItem* _PyErr_GetTopmostException(PyThreadState *tstate);
+extern PyObject* _PyErr_GetHandledException(PyThreadState *);
+extern void _PyErr_SetHandledException(PyThreadState *, PyObject *);
+extern void _PyErr_GetExcInfo(PyThreadState *, PyObject **, PyObject **, PyObject **);
+
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(void) _PyErr_SetKeyError(PyObject *);
+
+
+// Like PyErr_Format(), but saves current exception as __context__ and
+// __cause__.
+// Export for '_sqlite3' shared extension.
+PyAPI_FUNC(PyObject*) _PyErr_FormatFromCause(
+    PyObject *exception,
+    const char *format,   /* ASCII-encoded string  */
+    ...
+    );
+
+extern int _PyException_AddNote(
+     PyObject *exc,
+     PyObject *note);
+
+extern int _PyErr_CheckSignals(void);
+
+/* Support for adding program text to SyntaxErrors */
+
+// Export for test_peg_generator
+PyAPI_FUNC(PyObject*) _PyErr_ProgramDecodedTextObject(
+    PyObject *filename,
+    int lineno,
+    const char* encoding);
+
+extern PyObject* _PyUnicodeTranslateError_Create(
+    PyObject *object,
+    Py_ssize_t start,
+    Py_ssize_t end,
+    const char *reason          /* UTF-8 encoded string */
+    );
+
+extern void _Py_NO_RETURN _Py_FatalErrorFormat(
+    const char *func,
+    const char *format,
+    ...);
+
+extern PyObject* _PyErr_SetImportErrorWithNameFrom(
+        PyObject *,
+        PyObject *,
+        PyObject *,
+        PyObject *);
+
+
 /* runtime lifecycle */
 
 extern PyStatus _PyErr_InitTypes(PyInterpreterState *);
@@ -31,86 +84,92 @@ static inline void _PyErr_ClearExcState(_PyErr_StackItem *exc_state)
     Py_CLEAR(exc_state->exc_value);
 }
 
-PyAPI_FUNC(PyObject*) _PyErr_StackItemToExcInfoTuple(
+extern PyObject* _PyErr_StackItemToExcInfoTuple(
     _PyErr_StackItem *err_info);
 
-PyAPI_FUNC(void) _PyErr_Fetch(
+extern void _PyErr_Fetch(
     PyThreadState *tstate,
     PyObject **type,
     PyObject **value,
     PyObject **traceback);
 
-extern PyObject *
-_PyErr_GetRaisedException(PyThreadState *tstate);
+extern PyObject* _PyErr_GetRaisedException(PyThreadState *tstate);
 
-PyAPI_FUNC(int) _PyErr_ExceptionMatches(
+extern int _PyErr_ExceptionMatches(
     PyThreadState *tstate,
     PyObject *exc);
 
-void
-_PyErr_SetRaisedException(PyThreadState *tstate, PyObject *exc);
+extern void _PyErr_SetRaisedException(PyThreadState *tstate, PyObject *exc);
 
-PyAPI_FUNC(void) _PyErr_Restore(
+extern void _PyErr_Restore(
     PyThreadState *tstate,
     PyObject *type,
     PyObject *value,
     PyObject *traceback);
 
-PyAPI_FUNC(void) _PyErr_SetObject(
+extern void _PyErr_SetObject(
     PyThreadState *tstate,
     PyObject *type,
     PyObject *value);
 
-PyAPI_FUNC(void) _PyErr_ChainStackItem(
-    _PyErr_StackItem *exc_info);
+extern void _PyErr_ChainStackItem(void);
 
-PyAPI_FUNC(void) _PyErr_Clear(PyThreadState *tstate);
+extern void _PyErr_Clear(PyThreadState *tstate);
 
-PyAPI_FUNC(void) _PyErr_SetNone(PyThreadState *tstate, PyObject *exception);
+extern void _PyErr_SetNone(PyThreadState *tstate, PyObject *exception);
 
-PyAPI_FUNC(PyObject *) _PyErr_NoMemory(PyThreadState *tstate);
+extern PyObject* _PyErr_NoMemory(PyThreadState *tstate);
 
-PyAPI_FUNC(void) _PyErr_SetString(
+extern void _PyErr_SetString(
     PyThreadState *tstate,
     PyObject *exception,
     const char *string);
 
-PyAPI_FUNC(PyObject *) _PyErr_Format(
+extern PyObject* _PyErr_Format(
     PyThreadState *tstate,
     PyObject *exception,
     const char *format,
     ...);
 
-PyAPI_FUNC(void) _PyErr_NormalizeException(
+extern void _PyErr_NormalizeException(
     PyThreadState *tstate,
     PyObject **exc,
     PyObject **val,
     PyObject **tb);
 
-PyAPI_FUNC(PyObject *) _PyErr_FormatFromCauseTstate(
+extern PyObject* _PyErr_FormatFromCauseTstate(
     PyThreadState *tstate,
     PyObject *exception,
     const char *format,
     ...);
 
-PyAPI_FUNC(PyObject *) _PyExc_CreateExceptionGroup(
+extern PyObject* _PyExc_CreateExceptionGroup(
     const char *msg,
     PyObject *excs);
 
-PyAPI_FUNC(PyObject *) _PyExc_PrepReraiseStar(
+extern PyObject* _PyExc_PrepReraiseStar(
     PyObject *orig,
     PyObject *excs);
 
-PyAPI_FUNC(int) _PyErr_CheckSignalsTstate(PyThreadState *tstate);
-
-PyAPI_FUNC(void) _Py_DumpExtensionModules(int fd, PyInterpreterState *interp);
+extern int _PyErr_CheckSignalsTstate(PyThreadState *tstate);
 
+extern void _Py_DumpExtensionModules(int fd, PyInterpreterState *interp);
+extern PyObject* _Py_CalculateSuggestions(PyObject *dir, PyObject *name);
 extern PyObject* _Py_Offer_Suggestions(PyObject* exception);
+
+// Export for '_testinternalcapi' shared extension
 PyAPI_FUNC(Py_ssize_t) _Py_UTF8_Edit_Cost(PyObject *str_a, PyObject *str_b,
                                           Py_ssize_t max_cost);
 
 void _PyErr_FormatNote(const char *format, ...);
 
+/* Context manipulation (PEP 3134) */
+
+Py_DEPRECATED(3.12) extern void _PyErr_ChainExceptions(PyObject *, PyObject *, PyObject *);
+
+// Export for '_zoneinfo' shared extension
+PyAPI_FUNC(void) _PyErr_ChainExceptions1(PyObject *);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_pyhash.h b/Include/internal/pycore_pyhash.h
index 34dfa53771288e..0ce08900e96f0b 100644
--- a/Include/internal/pycore_pyhash.h
+++ b/Include/internal/pycore_pyhash.h
@@ -1,10 +1,78 @@
-#ifndef Py_INTERNAL_HASH_H
-#define Py_INTERNAL_HASH_H
+#ifndef Py_INTERNAL_PYHASH_H
+#define Py_INTERNAL_PYHASH_H
 
 #ifndef Py_BUILD_CORE
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+// Similar to Py_HashPointer(), but don't replace -1 with -2.
+static inline Py_hash_t
+_Py_HashPointerRaw(const void *ptr)
+{
+    uintptr_t x = (uintptr_t)ptr;
+    Py_BUILD_ASSERT(sizeof(x) == sizeof(ptr));
+
+    // Bottom 3 or 4 bits are likely to be 0; rotate x by 4 to the right
+    // to avoid excessive hash collisions for dicts and sets.
+    x = (x >> 4) | (x << (8 * sizeof(uintptr_t) - 4));
+
+    Py_BUILD_ASSERT(sizeof(x) == sizeof(Py_hash_t));
+    return (Py_hash_t)x;
+}
+
+// Export for '_datetime' shared extension
+PyAPI_FUNC(Py_hash_t) _Py_HashBytes(const void*, Py_ssize_t);
+
+/* Hash secret
+ *
+ * memory layout on 64 bit systems
+ *   cccccccc cccccccc cccccccc  uc -- unsigned char[24]
+ *   pppppppp ssssssss ........  fnv -- two Py_hash_t
+ *   k0k0k0k0 k1k1k1k1 ........  siphash -- two uint64_t
+ *   ........ ........ ssssssss  djbx33a -- 16 bytes padding + one Py_hash_t
+ *   ........ ........ eeeeeeee  pyexpat XML hash salt
+ *
+ * memory layout on 32 bit systems
+ *   cccccccc cccccccc cccccccc  uc
+ *   ppppssss ........ ........  fnv -- two Py_hash_t
+ *   k0k0k0k0 k1k1k1k1 ........  siphash -- two uint64_t (*)
+ *   ........ ........ ssss....  djbx33a -- 16 bytes padding + one Py_hash_t
+ *   ........ ........ eeee....  pyexpat XML hash salt
+ *
+ * (*) The siphash member may not be available on 32 bit platforms without
+ *     an unsigned int64 data type.
+ */
+typedef union {
+    /* ensure 24 bytes */
+    unsigned char uc[24];
+    /* two Py_hash_t for FNV */
+    struct {
+        Py_hash_t prefix;
+        Py_hash_t suffix;
+    } fnv;
+    /* two uint64 for SipHash24 */
+    struct {
+        uint64_t k0;
+        uint64_t k1;
+    } siphash;
+    /* a different (!) Py_hash_t for small string optimization */
+    struct {
+        unsigned char padding[16];
+        Py_hash_t suffix;
+    } djbx33a;
+    struct {
+        unsigned char padding[16];
+        Py_hash_t hashsalt;
+    } expat;
+} _Py_HashSecret_t;
+
+// Export for '_elementtree' shared extension
+PyAPI_DATA(_Py_HashSecret_t) _Py_HashSecret;
+
+#ifdef Py_DEBUG
+extern int _Py_HashSecret_Initialized;
+#endif
+
 
 struct pyhash_runtime_state {
     struct {
@@ -34,7 +102,6 @@ struct pyhash_runtime_state {
     }
 
 
-uint64_t _Py_KeyedHash(uint64_t, const char *, Py_ssize_t);
-
+extern uint64_t _Py_KeyedHash(uint64_t key, const void *src, Py_ssize_t src_sz);
 
-#endif  // Py_INTERNAL_HASH_H
+#endif  // !Py_INTERNAL_PYHASH_H
diff --git a/Include/internal/pycore_pylifecycle.h b/Include/internal/pycore_pylifecycle.h
index 7f8cc643ec0c96..daf7cb77dcc63a 100644
--- a/Include/internal/pycore_pylifecycle.h
+++ b/Include/internal/pycore_pylifecycle.h
@@ -23,15 +23,12 @@ extern PyStatus _PyUnicode_InitEncodings(PyThreadState *tstate);
 extern int _PyUnicode_EnableLegacyWindowsFSEncoding(void);
 #endif
 
-PyAPI_FUNC(void) _Py_ClearStandardStreamEncoding(void);
-
-PyAPI_FUNC(int) _Py_IsLocaleCoercionTarget(const char *ctype_loc);
+extern int _Py_IsLocaleCoercionTarget(const char *ctype_loc);
 
 /* Various one-time initializers */
 
 extern void _Py_InitVersion(void);
 extern PyStatus _PyFaulthandler_Init(int enable);
-extern int _PyTraceMalloc_Init(int enable);
 extern PyObject * _PyBuiltin_Init(PyInterpreterState *interp);
 extern PyStatus _PySys_Create(
     PyThreadState *tstate,
@@ -43,7 +40,6 @@ extern void _PySys_FiniTypes(PyInterpreterState *interp);
 extern int _PyBuiltins_AddExceptions(PyObject * bltinmod);
 extern PyStatus _Py_HashRandomization_Init(const PyConfig *);
 
-extern PyStatus _PyTime_Init(void);
 extern PyStatus _PyGC_Init(PyInterpreterState *interp);
 extern PyStatus _PyAtExit_Init(PyInterpreterState *interp);
 extern int _Py_Deepfreeze_Init(void);
@@ -70,30 +66,56 @@ extern PyStatus _PyGILState_Init(PyInterpreterState *interp);
 extern PyStatus _PyGILState_SetTstate(PyThreadState *tstate);
 extern void _PyGILState_Fini(PyInterpreterState *interp);
 
-PyAPI_FUNC(void) _PyGC_DumpShutdownStats(PyInterpreterState *interp);
+extern void _PyGC_DumpShutdownStats(PyInterpreterState *interp);
 
-PyAPI_FUNC(PyStatus) _Py_PreInitializeFromPyArgv(
+extern PyStatus _Py_PreInitializeFromPyArgv(
     const PyPreConfig *src_config,
     const struct _PyArgv *args);
-PyAPI_FUNC(PyStatus) _Py_PreInitializeFromConfig(
+extern PyStatus _Py_PreInitializeFromConfig(
     const PyConfig *config,
     const struct _PyArgv *args);
 
-PyAPI_FUNC(wchar_t *) _Py_GetStdlibDir(void);
+extern wchar_t * _Py_GetStdlibDir(void);
 
-PyAPI_FUNC(int) _Py_HandleSystemExit(int *exitcode_p);
+extern int _Py_HandleSystemExit(int *exitcode_p);
 
-PyAPI_FUNC(PyObject*) _PyErr_WriteUnraisableDefaultHook(PyObject *unraisable);
+extern PyObject* _PyErr_WriteUnraisableDefaultHook(PyObject *unraisable);
 
-PyAPI_FUNC(void) _PyErr_Print(PyThreadState *tstate);
-PyAPI_FUNC(void) _PyErr_Display(PyObject *file, PyObject *exception,
+extern void _PyErr_Print(PyThreadState *tstate);
+extern void _PyErr_Display(PyObject *file, PyObject *exception,
                                 PyObject *value, PyObject *tb);
-PyAPI_FUNC(void) _PyErr_DisplayException(PyObject *file, PyObject *exc);
+extern void _PyErr_DisplayException(PyObject *file, PyObject *exc);
 
-PyAPI_FUNC(void) _PyThreadState_DeleteCurrent(PyThreadState *tstate);
+extern void _PyThreadState_DeleteCurrent(PyThreadState *tstate);
 
 extern void _PyAtExit_Call(PyInterpreterState *interp);
 
+extern int _Py_IsCoreInitialized(void);
+
+extern int _Py_FdIsInteractive(FILE *fp, PyObject *filename);
+
+extern const char* _Py_gitidentifier(void);
+extern const char* _Py_gitversion(void);
+
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _Py_IsInterpreterFinalizing(PyInterpreterState *interp);
+
+/* Random */
+extern int _PyOS_URandom(void *buffer, Py_ssize_t size);
+
+// Export for '_random' shared extension
+PyAPI_FUNC(int) _PyOS_URandomNonblock(void *buffer, Py_ssize_t size);
+
+/* Legacy locale support */
+extern int _Py_CoerceLegacyLocale(int warn);
+extern int _Py_LegacyLocaleDetected(int warn);
+
+// Export for 'readline' shared extension
+PyAPI_FUNC(char*) _Py_SetLocaleFromEnv(int category);
+
+// Export for special main.c string compiling with source tracebacks
+int _PyRun_SimpleStringFlagsWithName(const char *command, const char* name, PyCompilerFlags *flags);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_pymem.h b/Include/internal/pycore_pymem.h
index 4cc953d8d779c9..8631ca34a5e616 100644
--- a/Include/internal/pycore_pymem.h
+++ b/Include/internal/pycore_pymem.h
@@ -1,5 +1,8 @@
 #ifndef Py_INTERNAL_PYMEM_H
 #define Py_INTERNAL_PYMEM_H
+
+#include "pycore_lock.h"            // PyMutex
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -8,8 +11,20 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pymem.h"      // PyMemAllocatorName
+// Try to get the allocators name set by _PyMem_SetupAllocators().
+// Return NULL if unknown.
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(const char*) _PyMem_GetCurrentAllocatorName(void);
+
+// strdup() using PyMem_RawMalloc()
+extern char* _PyMem_RawStrdup(const char *str);
+
+// strdup() using PyMem_Malloc().
+// Export for '_pickle ' shared extension.
+PyAPI_FUNC(char*) _PyMem_Strdup(const char *str);
 
+// wcsdup() using PyMem_RawMalloc()
+extern wchar_t* _PyMem_RawWcsdup(const wchar_t *str);
 
 typedef struct {
     /* We tag each block with an API ID in order to tag API violations */
@@ -18,6 +33,7 @@ typedef struct {
 } debug_alloc_api_t;
 
 struct _pymem_allocators {
+    PyMutex mutex;
     struct {
         PyMemAllocatorEx raw;
         PyMemAllocatorEx mem;
@@ -35,7 +51,7 @@ struct _pymem_allocators {
 /* Set the memory allocator of the specified domain to the default.
    Save the old allocator into *old_alloc if it's non-NULL.
    Return on success, or return -1 if the domain is unknown. */
-PyAPI_FUNC(int) _PyMem_SetDefaultAllocator(
+extern int _PyMem_SetDefaultAllocator(
     PyMemAllocatorDomain domain,
     PyMemAllocatorEx *old_alloc);
 
@@ -81,14 +97,14 @@ static inline int _PyMem_IsPtrFreed(const void *ptr)
 #endif
 }
 
-PyAPI_FUNC(int) _PyMem_GetAllocatorName(
+extern int _PyMem_GetAllocatorName(
     const char *name,
     PyMemAllocatorName *allocator);
 
 /* Configure the Python memory allocators.
    Pass PYMEM_ALLOCATOR_DEFAULT to use default allocators.
    PYMEM_ALLOCATOR_NOT_SET does nothing. */
-PyAPI_FUNC(int) _PyMem_SetupAllocators(PyMemAllocatorName allocator);
+extern int _PyMem_SetupAllocators(PyMemAllocatorName allocator);
 
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_pymem_init.h b/Include/internal/pycore_pymem_init.h
index 78232738cb09d5..11fbe16fa6f1d5 100644
--- a/Include/internal/pycore_pymem_init.h
+++ b/Include/internal/pycore_pymem_init.h
@@ -8,8 +8,6 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_pymem.h"
-
 
 /********************************/
 /* the allocators' initializers */
@@ -20,17 +18,18 @@ extern void * _PyMem_RawRealloc(void *, void *, size_t);
 extern void _PyMem_RawFree(void *, void *);
 #define PYRAW_ALLOC {NULL, _PyMem_RawMalloc, _PyMem_RawCalloc, _PyMem_RawRealloc, _PyMem_RawFree}
 
-#ifdef WITH_PYMALLOC
+#if defined(WITH_PYMALLOC)
 extern void* _PyObject_Malloc(void *, size_t);
 extern void* _PyObject_Calloc(void *, size_t, size_t);
 extern void _PyObject_Free(void *, void *);
 extern void* _PyObject_Realloc(void *, void *, size_t);
 #  define PYOBJ_ALLOC {NULL, _PyObject_Malloc, _PyObject_Calloc, _PyObject_Realloc, _PyObject_Free}
+#  define PYMEM_ALLOC PYOBJ_ALLOC
 #else
 # define PYOBJ_ALLOC PYRAW_ALLOC
+# define PYMEM_ALLOC PYOBJ_ALLOC
 #endif  // WITH_PYMALLOC
 
-#define PYMEM_ALLOC PYOBJ_ALLOC
 
 extern void* _PyMem_DebugRawMalloc(void *, size_t);
 extern void* _PyMem_DebugRawCalloc(void *, size_t, size_t);
diff --git a/Include/internal/pycore_pystate.h b/Include/internal/pycore_pystate.h
index daa40cf4bcd855..c031a38cd6bfa3 100644
--- a/Include/internal/pycore_pystate.h
+++ b/Include/internal/pycore_pystate.h
@@ -8,7 +8,34 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_runtime.h"   /* PyRuntimeState */
+#include "pycore_runtime.h"       // _PyRuntime
+
+
+// Values for PyThreadState.state. A thread must be in the "attached" state
+// before calling most Python APIs. If the GIL is enabled, then "attached"
+// implies that the thread holds the GIL and "detached" implies that the
+// thread does not hold the GIL (or is in the process of releasing it). In
+// `--disable-gil` builds, multiple threads may be "attached" to the same
+// interpreter at the same time. Only the "bound" thread may perform the
+// transitions between "attached" and "detached" on its own PyThreadState.
+//
+// The "gc" state is used to implement stop-the-world pauses, such as for
+// cyclic garbage collection. It is only used in `--disable-gil` builds. It is
+// similar to the "detached" state, but only the thread performing a
+// stop-the-world pause may transition threads between the "detached" and "gc"
+// states. A thread trying to "attach" from the "gc" state will block until
+// it is transitioned back to "detached" when the stop-the-world pause is
+// complete.
+//
+// State transition diagram:
+//
+//            (bound thread)        (stop-the-world thread)
+// [attached]       <->       [detached]       <->       [gc]
+//
+// See `_PyThreadState_Attach()` and `_PyThreadState_Detach()`.
+#define _Py_THREAD_DETACHED     0
+#define _Py_THREAD_ATTACHED     1
+#define _Py_THREAD_GC           2
 
 
 /* Check if the current thread is the main thread.
@@ -36,10 +63,20 @@ _Py_IsMainInterpreter(PyInterpreterState *interp)
 static inline int
 _Py_IsMainInterpreterFinalizing(PyInterpreterState *interp)
 {
-    return (_PyRuntimeState_GetFinalizing(interp->runtime) != NULL &&
-            interp == &interp->runtime->_main_interpreter);
+    /* bpo-39877: Access _PyRuntime directly rather than using
+       tstate->interp->runtime to support calls from Python daemon threads.
+       After Py_Finalize() has been called, tstate can be a dangling pointer:
+       point to PyThreadState freed memory. */
+    return (_PyRuntimeState_GetFinalizing(&_PyRuntime) != NULL &&
+            interp == &_PyRuntime._main_interpreter);
 }
 
+// Export for _xxsubinterpreters module.
+PyAPI_FUNC(int) _PyInterpreterState_SetRunningMain(PyInterpreterState *);
+PyAPI_FUNC(void) _PyInterpreterState_SetNotRunningMain(PyInterpreterState *);
+PyAPI_FUNC(int) _PyInterpreterState_IsRunningMain(PyInterpreterState *);
+PyAPI_FUNC(int) _PyInterpreterState_FailIfRunningMain(PyInterpreterState *);
+
 
 static inline const PyConfig *
 _Py_GetMainConfig(void)
@@ -60,21 +97,22 @@ _Py_ThreadCanHandleSignals(PyInterpreterState *interp)
 }
 
 
-/* Only execute pending calls on the main thread. */
-static inline int
-_Py_ThreadCanHandlePendingCalls(void)
-{
-    return _Py_IsMainThread();
-}
-
-
 /* Variable and static inline functions for in-line access to current thread
    and interpreter state */
 
 #if defined(HAVE_THREAD_LOCAL) && !defined(Py_BUILD_CORE_MODULE)
 extern _Py_thread_local PyThreadState *_Py_tss_tstate;
 #endif
-PyAPI_DATA(PyThreadState *) _PyThreadState_GetCurrent(void);
+
+#ifndef NDEBUG
+extern int _PyThreadState_CheckConsistency(PyThreadState *tstate);
+#endif
+
+int _PyThreadState_MustExit(PyThreadState *tstate);
+
+// Export for most shared extensions, used via _PyThreadState_GET() static
+// inline function.
+PyAPI_FUNC(PyThreadState *) _PyThreadState_GetCurrent(void);
 
 /* Get the current Python thread state.
 
@@ -82,7 +120,7 @@ PyAPI_DATA(PyThreadState *) _PyThreadState_GetCurrent(void);
 
    The caller must hold the GIL.
 
-   See also PyThreadState_Get() and _PyThreadState_UncheckedGet(). */
+   See also PyThreadState_Get() and PyThreadState_GetUnchecked(). */
 static inline PyThreadState*
 _PyThreadState_GET(void)
 {
@@ -93,6 +131,21 @@ _PyThreadState_GET(void)
 #endif
 }
 
+// Attaches the current thread to the interpreter.
+//
+// This may block while acquiring the GIL (if the GIL is enabled) or while
+// waiting for a stop-the-world pause (if the GIL is disabled).
+//
+// High-level code should generally call PyEval_RestoreThread() instead, which
+// calls this function.
+void _PyThreadState_Attach(PyThreadState *tstate);
+
+// Detaches the current thread from the interpreter.
+//
+// High-level code should generally call PyEval_SaveThread() instead, which
+// calls this function.
+void _PyThreadState_Detach(PyThreadState *tstate);
+
 
 static inline void
 _Py_EnsureFuncTstateNotNULL(const char *func, PyThreadState *tstate)
@@ -116,7 +169,7 @@ _Py_EnsureFuncTstateNotNULL(const char *func, PyThreadState *tstate)
 
    The caller must hold the GIL.
 
-   See also _PyInterpreterState_Get()
+   See also PyInterpreterState_Get()
    and _PyGILState_GetInterpreterStateUnsafe(). */
 static inline PyInterpreterState* _PyInterpreterState_GET(void) {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -129,46 +182,61 @@ static inline PyInterpreterState* _PyInterpreterState_GET(void) {
 
 // PyThreadState functions
 
-PyAPI_FUNC(PyThreadState *) _PyThreadState_New(PyInterpreterState *interp);
-PyAPI_FUNC(void) _PyThreadState_Bind(PyThreadState *tstate);
-// We keep this around exclusively for stable ABI compatibility.
-PyAPI_FUNC(void) _PyThreadState_Init(
-    PyThreadState *tstate);
-PyAPI_FUNC(void) _PyThreadState_DeleteExcept(PyThreadState *tstate);
+extern PyThreadState * _PyThreadState_New(
+    PyInterpreterState *interp,
+    int whence);
+extern void _PyThreadState_Bind(PyThreadState *tstate);
+extern void _PyThreadState_DeleteExcept(PyThreadState *tstate);
 
-extern void _PyThreadState_InitDetached(PyThreadState *, PyInterpreterState *);
-extern void _PyThreadState_ClearDetached(PyThreadState *);
-extern void _PyThreadState_BindDetached(PyThreadState *);
-extern void _PyThreadState_UnbindDetached(PyThreadState *);
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(PyObject*) _PyThreadState_GetDict(PyThreadState *tstate);
+
+/* The implementation of sys._current_exceptions()  Returns a dict mapping
+   thread id to that thread's current exception.
+*/
+extern PyObject* _PyThread_CurrentExceptions(void);
 
 
 /* Other */
 
-PyAPI_FUNC(PyThreadState *) _PyThreadState_Swap(
+extern PyThreadState * _PyThreadState_Swap(
     _PyRuntimeState *runtime,
     PyThreadState *newts);
 
-PyAPI_FUNC(PyStatus) _PyInterpreterState_Enable(_PyRuntimeState *runtime);
+extern PyStatus _PyInterpreterState_Enable(_PyRuntimeState *runtime);
 
 #ifdef HAVE_FORK
 extern PyStatus _PyInterpreterState_DeleteExceptMain(_PyRuntimeState *runtime);
 extern void _PySignal_AfterFork(void);
 #endif
 
-
+// Export for the stable ABI
 PyAPI_FUNC(int) _PyState_AddModule(
     PyThreadState *tstate,
     PyObject* module,
     PyModuleDef* def);
 
 
-PyAPI_FUNC(int) _PyOS_InterruptOccurred(PyThreadState *tstate);
+extern int _PyOS_InterruptOccurred(PyThreadState *tstate);
 
 #define HEAD_LOCK(runtime) \
-    PyThread_acquire_lock((runtime)->interpreters.mutex, WAIT_LOCK)
+    PyMutex_LockFlags(&(runtime)->interpreters.mutex, _Py_LOCK_DONT_DETACH)
 #define HEAD_UNLOCK(runtime) \
-    PyThread_release_lock((runtime)->interpreters.mutex)
-
+    PyMutex_Unlock(&(runtime)->interpreters.mutex)
+
+// Get the configuration of the current interpreter.
+// The caller must hold the GIL.
+// Export for test_peg_generator.
+PyAPI_FUNC(const PyConfig*) _Py_GetConfig(void);
+
+// Get the single PyInterpreterState used by this process' GILState
+// implementation.
+//
+// This function doesn't check for error. Return NULL before _PyGILState_Init()
+// is called and after _PyGILState_Fini() is called.
+//
+// See also PyInterpreterState_Get() and _PyInterpreterState_GET().
+extern PyInterpreterState* _PyGILState_GetInterpreterStateUnsafe(void);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_pystats.h b/Include/internal/pycore_pystats.h
new file mode 100644
index 00000000000000..f8af398a560586
--- /dev/null
+++ b/Include/internal/pycore_pystats.h
@@ -0,0 +1,21 @@
+#ifndef Py_INTERNAL_PYSTATS_H
+#define Py_INTERNAL_PYSTATS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#ifdef Py_STATS
+extern void _Py_StatsOn(void);
+extern void _Py_StatsOff(void);
+extern void _Py_StatsClear(void);
+extern int _Py_PrintSpecializationStats(int to_file);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_PYSTATS_H
diff --git a/Include/internal/pycore_pythonrun.h b/Include/internal/pycore_pythonrun.h
new file mode 100644
index 00000000000000..0bfc5704dc4c59
--- /dev/null
+++ b/Include/internal/pycore_pythonrun.h
@@ -0,0 +1,39 @@
+#ifndef Py_INTERNAL_PYTHONRUN_H
+#define Py_INTERNAL_PYTHONRUN_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+extern int _PyRun_SimpleFileObject(
+    FILE *fp,
+    PyObject *filename,
+    int closeit,
+    PyCompilerFlags *flags);
+
+extern int _PyRun_AnyFileObject(
+    FILE *fp,
+    PyObject *filename,
+    int closeit,
+    PyCompilerFlags *flags);
+
+extern int _PyRun_InteractiveLoopObject(
+    FILE *fp,
+    PyObject *filename,
+    PyCompilerFlags *flags);
+
+extern const char* _Py_SourceAsString(
+    PyObject *cmd,
+    const char *funcname,
+    const char *what,
+    PyCompilerFlags *cf,
+    PyObject **cmd_copy);
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_PYTHONRUN_H
+
diff --git a/Include/internal/pycore_pythread.h b/Include/internal/pycore_pythread.h
index f53921494c158f..9c9a09f60f3441 100644
--- a/Include/internal/pycore_pythread.h
+++ b/Include/internal/pycore_pythread.h
@@ -8,42 +8,45 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "dynamic_annotations.h" // _Py_ANNOTATE_PURE_HAPPENS_BEFORE_MUTEX
+
+// Get _POSIX_THREADS and _POSIX_SEMAPHORES macros if available
+#if (defined(HAVE_UNISTD_H) && !defined(_POSIX_THREADS) \
+                            && !defined(_POSIX_SEMAPHORES))
+#  include <unistd.h>             // _POSIX_THREADS, _POSIX_SEMAPHORES
+#endif
+#if (defined(HAVE_PTHREAD_H) && !defined(_POSIX_THREADS) \
+                             && !defined(_POSIX_SEMAPHORES))
+   // This means pthreads are not implemented in libc headers, hence the macro
+   // not present in <unistd.h>. But they still can be implemented as an
+   // external library (e.g. gnu pth in pthread emulation)
+#  include <pthread.h>            // _POSIX_THREADS, _POSIX_SEMAPHORES
+#endif
+#if !defined(_POSIX_THREADS) && defined(__hpux) && defined(_SC_THREADS)
+   // Check if we're running on HP-UX and _SC_THREADS is defined. If so, then
+   // enough of the POSIX threads package is implemented to support Python
+   // threads.
+   //
+   // This is valid for HP-UX 11.23 running on an ia64 system. If needed, add
+   // a check of __ia64 to verify that we're running on an ia64 system instead
+   // of a pa-risc system.
+#  define _POSIX_THREADS
+#endif
 
-#ifndef _POSIX_THREADS
-/* This means pthreads are not implemented in libc headers, hence the macro
-   not present in unistd.h. But they still can be implemented as an external
-   library (e.g. gnu pth in pthread emulation) */
-# ifdef HAVE_PTHREAD_H
-#  include <pthread.h> /* _POSIX_THREADS */
-# endif
-# ifndef _POSIX_THREADS
-/* Check if we're running on HP-UX and _SC_THREADS is defined. If so, then
-   enough of the Posix threads package is implemented to support python
-   threads.
-
-   This is valid for HP-UX 11.23 running on an ia64 system. If needed, add
-   a check of __ia64 to verify that we're running on an ia64 system instead
-   of a pa-risc system.
-*/
-#  ifdef __hpux
-#   ifdef _SC_THREADS
-#    define _POSIX_THREADS
-#   endif
-#  endif
-# endif /* _POSIX_THREADS */
-#endif /* _POSIX_THREADS */
 
 #if defined(_POSIX_THREADS) || defined(HAVE_PTHREAD_STUBS)
-# define _USE_PTHREADS
+#  define _USE_PTHREADS
 #endif
 
 #if defined(_USE_PTHREADS) && defined(HAVE_PTHREAD_CONDATTR_SETCLOCK) && defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC)
 // monotonic is supported statically.  It doesn't mean it works on runtime.
-# define CONDATTR_MONOTONIC
+#  define CONDATTR_MONOTONIC
 #endif
 
 
 #if defined(HAVE_PTHREAD_STUBS)
+#include <stdbool.h>              // bool
+
 // pthread_key
 struct py_stub_tls_entry {
     bool in_use;
@@ -75,6 +78,77 @@ struct _pythread_runtime_state {
 };
 
 
+#ifdef HAVE_FORK
+/* Private function to reinitialize a lock at fork in the child process.
+   Reset the lock to the unlocked state.
+   Return 0 on success, return -1 on error. */
+extern int _PyThread_at_fork_reinit(PyThread_type_lock *lock);
+#endif  /* HAVE_FORK */
+
+
+// unset: -1 seconds, in nanoseconds
+#define PyThread_UNSET_TIMEOUT ((_PyTime_t)(-1 * 1000 * 1000 * 1000))
+
+// Exported for the _xxinterpchannels module.
+PyAPI_FUNC(int) PyThread_ParseTimeoutArg(
+    PyObject *arg,
+    int blocking,
+    PY_TIMEOUT_T *timeout);
+
+/* Helper to acquire an interruptible lock with a timeout.  If the lock acquire
+ * is interrupted, signal handlers are run, and if they raise an exception,
+ * PY_LOCK_INTR is returned.  Otherwise, PY_LOCK_ACQUIRED or PY_LOCK_FAILURE
+ * are returned, depending on whether the lock can be acquired within the
+ * timeout.
+ */
+// Exported for the _xxinterpchannels module.
+PyAPI_FUNC(PyLockStatus) PyThread_acquire_lock_timed_with_retries(
+    PyThread_type_lock,
+    PY_TIMEOUT_T microseconds);
+
+typedef unsigned long long PyThread_ident_t;
+typedef Py_uintptr_t PyThread_handle_t;
+
+#define PY_FORMAT_THREAD_IDENT_T "llu"
+#define Py_PARSE_THREAD_IDENT_T "K"
+
+PyAPI_FUNC(PyThread_ident_t) PyThread_get_thread_ident_ex(void);
+
+/* Thread joining APIs.
+ *
+ * These APIs have a strict contract:
+ *  - Either PyThread_join_thread or PyThread_detach_thread must be called
+ *    exactly once with the given handle.
+ *  - Calling neither PyThread_join_thread nor PyThread_detach_thread results
+ *    in a resource leak until the end of the process.
+ *  - Any other usage, such as calling both PyThread_join_thread and
+ *    PyThread_detach_thread, or calling them more than once (including
+ *    simultaneously), results in undefined behavior.
+ */
+PyAPI_FUNC(int) PyThread_start_joinable_thread(void (*func)(void *),
+                                               void *arg,
+                                               PyThread_ident_t* ident,
+                                               PyThread_handle_t* handle);
+/*
+ * Join a thread started with `PyThread_start_joinable_thread`.
+ * This function cannot be interrupted. It returns 0 on success,
+ * a non-zero value on failure.
+ */
+PyAPI_FUNC(int) PyThread_join_thread(PyThread_handle_t);
+/*
+ * Detach a thread started with `PyThread_start_joinable_thread`, such
+ * that its resources are relased as soon as it exits.
+ * This function cannot be interrupted. It returns 0 on success,
+ * a non-zero value on failure.
+ */
+PyAPI_FUNC(int) PyThread_detach_thread(PyThread_handle_t);
+
+/*
+ * Obtain the new thread ident and handle in a forked child process.
+ */
+PyAPI_FUNC(void) PyThread_update_thread_after_fork(PyThread_ident_t* ident,
+                                                   PyThread_handle_t* handle);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_runtime.h b/Include/internal/pycore_runtime.h
index 6e06e874711bc2..e3348296ea61b7 100644
--- a/Include/internal/pycore_runtime.h
+++ b/Include/internal/pycore_runtime.h
@@ -8,27 +8,24 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_atexit.h"          // struct atexit_runtime_state
-#include "pycore_atomic.h"          /* _Py_atomic_address */
+#include "pycore_atexit.h"          // struct _atexit_runtime_state
 #include "pycore_ceval_state.h"     // struct _ceval_runtime_state
-#include "pycore_floatobject.h"     // struct _Py_float_runtime_state
+#include "pycore_crossinterp.h"   // struct _xidregistry
 #include "pycore_faulthandler.h"    // struct _faulthandler_runtime_state
-#include "pycore_global_objects.h"  // struct _Py_global_objects
+#include "pycore_floatobject.h"     // struct _Py_float_runtime_state
 #include "pycore_import.h"          // struct _import_runtime_state
 #include "pycore_interp.h"          // PyInterpreterState
 #include "pycore_object_state.h"    // struct _py_object_runtime_state
 #include "pycore_parser.h"          // struct _parser_runtime_state
-#include "pycore_pymem.h"           // struct _pymem_allocators
 #include "pycore_pyhash.h"          // struct pyhash_runtime_state
+#include "pycore_pymem.h"           // struct _pymem_allocators
 #include "pycore_pythread.h"        // struct _pythread_runtime_state
 #include "pycore_signal.h"          // struct _signals_runtime_state
-#include "pycore_time.h"            // struct _time_runtime_state
 #include "pycore_tracemalloc.h"     // struct _tracemalloc_runtime_state
-#include "pycore_typeobject.h"      // struct types_runtime_state
-#include "pycore_unicodeobject.h"   // struct _Py_unicode_runtime_ids
+#include "pycore_typeobject.h"      // struct _types_runtime_state
+#include "pycore_unicodeobject.h"   // struct _Py_unicode_runtime_state
 
 struct _getargs_runtime_state {
-    PyThread_type_lock mutex;
     struct _PyArg_Parser *static_parsers;
 };
 
@@ -53,12 +50,101 @@ typedef struct _Py_AuditHookEntry {
     void *userData;
 } _Py_AuditHookEntry;
 
+typedef struct _Py_DebugOffsets {
+    char cookie[8];
+    uint64_t version;
+    // Runtime state offset;
+    struct _runtime_state {
+        off_t finalizing;
+        off_t interpreters_head;
+    } runtime_state;
+
+    // Interpreter state offset;
+    struct _interpreter_state {
+        off_t next;
+        off_t threads_head;
+        off_t gc;
+        off_t imports_modules;
+        off_t sysdict;
+        off_t builtins;
+        off_t ceval_gil;
+        off_t gil_runtime_state_locked;
+        off_t gil_runtime_state_holder;
+    } interpreter_state;
+
+    // Thread state offset;
+    struct _thread_state{
+        off_t prev;
+        off_t next;
+        off_t interp;
+        off_t current_frame;
+        off_t thread_id;
+        off_t native_thread_id;
+    } thread_state;
+
+    // InterpreterFrame offset;
+    struct _interpreter_frame {
+        off_t previous;
+        off_t executable;
+        off_t instr_ptr;
+        off_t localsplus;
+        off_t owner;
+    } interpreter_frame;
+
+    // CFrame offset;
+    struct _cframe {
+        off_t current_frame;
+        off_t previous;
+    } cframe;
+
+    // Code object offset;
+    struct _code_object {
+        off_t filename;
+        off_t name;
+        off_t linetable;
+        off_t firstlineno;
+        off_t argcount;
+        off_t localsplusnames;
+        off_t localspluskinds;
+        off_t co_code_adaptive;
+    } code_object;
+
+    // PyObject offset;
+    struct _pyobject {
+        off_t ob_type;
+    } pyobject;
+
+    // PyTypeObject object offset;
+    struct _type_object {
+        off_t tp_name;
+    } type_object;
+
+    // PyTuple object offset;
+    struct _tuple_object {
+        off_t ob_item;
+    } tuple_object;
+} _Py_DebugOffsets;
+
 /* Full Python runtime state */
 
 /* _PyRuntimeState holds the global state for the CPython runtime.
    That data is exposed in the internal API as a static variable (_PyRuntime).
    */
 typedef struct pyruntimestate {
+    /* This field must be first to facilitate locating it by out of process
+     * debuggers. Out of process debuggers will use the offsets contained in this
+     * field to be able to locate other fields in several interpreter structures
+     * in a way that doesn't require them to know the exact layout of those
+     * structures.
+     *
+     * IMPORTANT:
+     * This struct is **NOT** backwards compatible between minor version of the
+     * interpreter and the members, order of members and size can change between
+     * minor versions. This struct is only guaranteed to be stable between patch
+     * versions for a given minor version of the interpreter.
+     */
+    _Py_DebugOffsets debug_offsets;
+
     /* Has been initialized to a safe state.
 
        In order to be effective, this must be set to 0 during or right
@@ -82,17 +168,12 @@ typedef struct pyruntimestate {
 
        Use _PyRuntimeState_GetFinalizing() and _PyRuntimeState_SetFinalizing()
        to access it, don't access it directly. */
-    _Py_atomic_address _finalizing;
-
-    struct _pymem_allocators allocators;
-    struct _obmalloc_global_state obmalloc;
-    struct pyhash_runtime_state pyhash_state;
-    struct _time_runtime_state time;
-    struct _pythread_runtime_state threads;
-    struct _signals_runtime_state signals;
+    PyThreadState *_finalizing;
+    /* The ID of the OS thread in which we are finalizing. */
+    unsigned long _finalizing_id;
 
     struct pyinterpreters {
-        PyThread_type_lock mutex;
+        PyMutex mutex;
         /* The linked list of interpreters, newest first. */
         PyInterpreterState *head;
         /* The runtime's initial interpreter, which has a special role
@@ -109,14 +190,23 @@ typedef struct pyruntimestate {
            using a Python int. */
         int64_t next_id;
     } interpreters;
-    // XXX Remove this field once we have a tp_* slot.
-    struct _xidregistry {
-        PyThread_type_lock mutex;
-        struct _xidregitem *head;
-    } xidregistry;
 
     unsigned long main_thread;
 
+    /* ---------- IMPORTANT ---------------------------
+     The fields above this line are declared as early as
+     possible to facilitate out-of-process observability
+     tools. */
+
+    /* cross-interpreter data and utils */
+    struct _xi_runtime_state xi;
+
+    struct _pymem_allocators allocators;
+    struct _obmalloc_global_state obmalloc;
+    struct pyhash_runtime_state pyhash_state;
+    struct _pythread_runtime_state threads;
+    struct _signals_runtime_state signals;
+
     /* Used for the thread state bound to the current thread. */
     Py_tss_t autoTSSkey;
 
@@ -143,7 +233,10 @@ typedef struct pyruntimestate {
     // is called multiple times.
     Py_OpenCodeHookFunction open_code_hook;
     void *open_code_userdata;
-    _Py_AuditHookEntry *audit_hook_head;
+    struct {
+        PyMutex mutex;
+        _Py_AuditHookEntry *head;
+    } audit_hooks;
 
     struct _py_object_runtime_state object_state;
     struct _Py_float_runtime_state float_state;
@@ -151,6 +244,7 @@ typedef struct pyruntimestate {
     struct _types_runtime_state types;
 
     /* All the objects that are shared by the runtime's interpreters. */
+    struct _Py_cached_objects cached_objects;
     struct _Py_static_objects static_objects;
 
     /* The following fields are here to avoid allocation during init.
@@ -169,15 +263,25 @@ typedef struct pyruntimestate {
 
     /* PyInterpreterState.interpreters.main */
     PyInterpreterState _main_interpreter;
+
+#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
+    // Used in "Python/emscripten_trampoline.c" to choose between type
+    // reflection trampoline and EM_JS trampoline.
+    bool wasm_type_reflection_available;
+#endif
+
 } _PyRuntimeState;
 
 
 /* other API */
 
+// Export _PyRuntime for shared extensions which use it in static inline
+// functions for best performance, like _Py_IsMainThread() or _Py_ID().
+// It's also made accessible for debuggers and profilers.
 PyAPI_DATA(_PyRuntimeState) _PyRuntime;
 
-PyAPI_FUNC(PyStatus) _PyRuntimeState_Init(_PyRuntimeState *runtime);
-PyAPI_FUNC(void) _PyRuntimeState_Fini(_PyRuntimeState *runtime);
+extern PyStatus _PyRuntimeState_Init(_PyRuntimeState *runtime);
+extern void _PyRuntimeState_Fini(_PyRuntimeState *runtime);
 
 #ifdef HAVE_FORK
 extern PyStatus _PyRuntimeState_ReInitThreads(_PyRuntimeState *runtime);
@@ -185,19 +289,33 @@ extern PyStatus _PyRuntimeState_ReInitThreads(_PyRuntimeState *runtime);
 
 /* Initialize _PyRuntimeState.
    Return NULL on success, or return an error message on failure. */
-PyAPI_FUNC(PyStatus) _PyRuntime_Initialize(void);
+extern PyStatus _PyRuntime_Initialize(void);
 
-PyAPI_FUNC(void) _PyRuntime_Finalize(void);
+extern void _PyRuntime_Finalize(void);
 
 
 static inline PyThreadState*
 _PyRuntimeState_GetFinalizing(_PyRuntimeState *runtime) {
-    return (PyThreadState*)_Py_atomic_load_relaxed(&runtime->_finalizing);
+    return (PyThreadState*)_Py_atomic_load_ptr_relaxed(&runtime->_finalizing);
+}
+
+static inline unsigned long
+_PyRuntimeState_GetFinalizingID(_PyRuntimeState *runtime) {
+    return _Py_atomic_load_ulong_relaxed(&runtime->_finalizing_id);
 }
 
 static inline void
 _PyRuntimeState_SetFinalizing(_PyRuntimeState *runtime, PyThreadState *tstate) {
-    _Py_atomic_store_relaxed(&runtime->_finalizing, (uintptr_t)tstate);
+    _Py_atomic_store_ptr_relaxed(&runtime->_finalizing, tstate);
+    if (tstate == NULL) {
+        _Py_atomic_store_ulong_relaxed(&runtime->_finalizing_id, 0);
+    }
+    else {
+        // XXX Re-enable this assert once gh-109860 is fixed.
+        //assert(tstate->thread_id == PyThread_get_thread_ident());
+        _Py_atomic_store_ulong_relaxed(&runtime->_finalizing_id,
+                                       tstate->thread_id);
+    }
 }
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_runtime_init.h b/Include/internal/pycore_runtime_init.h
index 3b1444f3429b9a..d324a94278839c 100644
--- a/Include/internal/pycore_runtime_init.h
+++ b/Include/internal/pycore_runtime_init.h
@@ -8,11 +8,17 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_long.h"
-#include "pycore_object.h"
-#include "pycore_parser.h"
-#include "pycore_pymem_init.h"
-#include "pycore_obmalloc_init.h"
+#include "pycore_ceval_state.h"   // _PyEval_RUNTIME_PERF_INIT
+#include "pycore_faulthandler.h"  // _faulthandler_runtime_state_INIT
+#include "pycore_floatobject.h"   // _py_float_format_unknown
+#include "pycore_object.h"        // _PyObject_HEAD_INIT
+#include "pycore_obmalloc_init.h" // _obmalloc_global_state_INIT
+#include "pycore_parser.h"        // _parser_runtime_state_INIT
+#include "pycore_pyhash.h"        // pyhash_state_INIT
+#include "pycore_pymem_init.h"    // _pymem_allocators_standard_INIT
+#include "pycore_runtime_init_generated.h"  // _Py_bytes_characters_INIT
+#include "pycore_signal.h"        // _signals_RUNTIME_INIT
+#include "pycore_tracemalloc.h"   // _tracemalloc_runtime_state_INIT
 
 
 extern PyTypeObject _PyExc_MemoryError;
@@ -21,13 +27,65 @@ extern PyTypeObject _PyExc_MemoryError;
 /* The static initializers defined here should only be used
    in the runtime init code (in pystate.c and pylifecycle.c). */
 
-
 #define _PyRuntimeState_INIT(runtime) \
     { \
+        .debug_offsets = { \
+            .cookie = "xdebugpy", \
+            .version = PY_VERSION_HEX, \
+            .runtime_state = { \
+                .finalizing = offsetof(_PyRuntimeState, _finalizing), \
+                .interpreters_head = offsetof(_PyRuntimeState, interpreters.head), \
+            }, \
+            .interpreter_state = { \
+                .next = offsetof(PyInterpreterState, next), \
+                .threads_head = offsetof(PyInterpreterState, threads.head), \
+                .gc = offsetof(PyInterpreterState, gc), \
+                .imports_modules = offsetof(PyInterpreterState, imports.modules), \
+                .sysdict = offsetof(PyInterpreterState, sysdict), \
+                .builtins = offsetof(PyInterpreterState, builtins), \
+                .ceval_gil = offsetof(PyInterpreterState, ceval.gil), \
+                .gil_runtime_state_locked = offsetof(PyInterpreterState, _gil.locked), \
+                .gil_runtime_state_holder = offsetof(PyInterpreterState, _gil.last_holder), \
+            }, \
+            .thread_state = { \
+                .prev = offsetof(PyThreadState, prev), \
+                .next = offsetof(PyThreadState, next), \
+                .interp = offsetof(PyThreadState, interp), \
+                .current_frame = offsetof(PyThreadState, current_frame), \
+                .thread_id = offsetof(PyThreadState, thread_id), \
+                .native_thread_id = offsetof(PyThreadState, native_thread_id), \
+            }, \
+            .interpreter_frame = { \
+                .previous = offsetof(_PyInterpreterFrame, previous), \
+                .executable = offsetof(_PyInterpreterFrame, f_executable), \
+                .instr_ptr = offsetof(_PyInterpreterFrame, instr_ptr), \
+                .localsplus = offsetof(_PyInterpreterFrame, localsplus), \
+                .owner = offsetof(_PyInterpreterFrame, owner), \
+            }, \
+            .code_object = { \
+                .filename = offsetof(PyCodeObject, co_filename), \
+                .name = offsetof(PyCodeObject, co_name), \
+                .linetable = offsetof(PyCodeObject, co_linetable), \
+                .firstlineno = offsetof(PyCodeObject, co_firstlineno), \
+                .argcount = offsetof(PyCodeObject, co_argcount), \
+                .localsplusnames = offsetof(PyCodeObject, co_localsplusnames), \
+                .localspluskinds = offsetof(PyCodeObject, co_localspluskinds), \
+                .co_code_adaptive = offsetof(PyCodeObject, co_code_adaptive), \
+            }, \
+            .pyobject = { \
+                .ob_type = offsetof(PyObject, ob_type), \
+            }, \
+            .type_object = { \
+                .tp_name = offsetof(PyTypeObject, tp_name), \
+            }, \
+            .tuple_object = { \
+                .ob_item = offsetof(PyTupleObject, ob_item), \
+            }, \
+        }, \
         .allocators = { \
-            _pymem_allocators_standard_INIT(runtime), \
-            _pymem_allocators_debug_INIT, \
-            _pymem_allocators_obj_arena_INIT, \
+            .standard = _pymem_allocators_standard_INIT(runtime), \
+            .debug = _pymem_allocators_debug_INIT, \
+            .obj_arena = _pymem_allocators_obj_arena_INIT, \
         }, \
         .obmalloc = _obmalloc_global_state_INIT, \
         .pyhash_state = pyhash_state_INIT, \
@@ -37,15 +95,15 @@ extern PyTypeObject _PyExc_MemoryError;
               until _PyInterpreterState_Enable() is called. */ \
             .next_id = -1, \
         }, \
+        .xi = { \
+            .registry = { \
+                .global = 1, \
+            }, \
+        }, \
         /* A TSS key must be initialized with Py_tss_NEEDS_INIT \
            in accordance with the specification. */ \
         .autoTSSkey = Py_tss_NEEDS_INIT, \
         .parser = _parser_runtime_state_INIT, \
-        .imports = { \
-            .extensions = { \
-                .main_tstate = _PyThreadState_INIT, \
-            }, \
-        }, \
         .ceval = { \
             .perf = _PyEval_RUNTIME_PERF_INIT, \
         }, \
@@ -76,13 +134,13 @@ extern PyTypeObject _PyExc_MemoryError;
                     .latin1 = _Py_str_latin1_INIT, \
                 }, \
                 .tuple_empty = { \
-                    .ob_base = _PyVarObject_HEAD_INIT(&PyTuple_Type, 0) \
+                    .ob_base = _PyVarObject_HEAD_INIT(&PyTuple_Type, 0), \
                 }, \
                 .hamt_bitmap_node_empty = { \
-                    .ob_base = _PyVarObject_HEAD_INIT(&_PyHamt_BitmapNode_Type, 0) \
+                    .ob_base = _PyVarObject_HEAD_INIT(&_PyHamt_BitmapNode_Type, 0), \
                 }, \
                 .context_token_missing = { \
-                    .ob_base = _PyObject_HEAD_INIT(&_PyContextTokenMissing_Type) \
+                    .ob_base = _PyObject_HEAD_INIT(&_PyContextTokenMissing_Type), \
                 }, \
             }, \
         }, \
@@ -106,6 +164,7 @@ extern PyTypeObject _PyExc_MemoryError;
                 { .threshold = 10, }, \
             }, \
         }, \
+        .object_state = _py_object_state_INIT(INTERP), \
         .dtoa = _dtoa_state_INIT(&(INTERP)), \
         .dict_state = _dict_state_INIT, \
         .func_state = { \
@@ -118,29 +177,46 @@ extern PyTypeObject _PyExc_MemoryError;
             .singletons = { \
                 ._not_used = 1, \
                 .hamt_empty = { \
-                    .ob_base = _PyObject_HEAD_INIT(&_PyHamt_Type) \
+                    .ob_base = _PyObject_HEAD_INIT(&_PyHamt_Type), \
                     .h_root = (PyHamtNode*)&_Py_SINGLETON(hamt_bitmap_node_empty), \
                 }, \
                 .last_resort_memory_error = { \
-                    _PyObject_HEAD_INIT(&_PyExc_MemoryError) \
+                    _PyObject_HEAD_INIT(&_PyExc_MemoryError), \
+                    .args = (PyObject*)&_Py_SINGLETON(tuple_empty) \
                 }, \
             }, \
         }, \
-        ._initial_thread = _PyThreadState_INIT, \
+        ._initial_thread = _PyThreadStateImpl_INIT, \
+    }
+
+#define _PyThreadStateImpl_INIT \
+    { \
+        .base = _PyThreadState_INIT, \
     }
 
 #define _PyThreadState_INIT \
     { \
+        ._whence = _PyThreadState_WHENCE_NOTSET, \
         .py_recursion_limit = Py_DEFAULT_RECURSION_LIMIT, \
         .context_ver = 1, \
     }
 
+#ifdef Py_TRACE_REFS
+# define _py_object_state_INIT(INTERP) \
+    { \
+        .refchain = NULL, \
+    }
+#else
+# define _py_object_state_INIT(INTERP) \
+    { 0 }
+#endif
+
 
 // global objects
 
 #define _PyBytes_SIMPLE_INIT(CH, LEN) \
     { \
-        _PyVarObject_HEAD_INIT(&PyBytes_Type, (LEN)) \
+        _PyVarObject_HEAD_INIT(&PyBytes_Type, (LEN)), \
         .ob_shash = -1, \
         .ob_sval = { (CH) }, \
     }
@@ -151,13 +227,14 @@ extern PyTypeObject _PyExc_MemoryError;
 
 #define _PyUnicode_ASCII_BASE_INIT(LITERAL, ASCII) \
     { \
-        .ob_base = _PyObject_HEAD_INIT(&PyUnicode_Type) \
+        .ob_base = _PyObject_HEAD_INIT(&PyUnicode_Type), \
         .length = sizeof(LITERAL) - 1, \
         .hash = -1, \
         .state = { \
             .kind = 1, \
             .compact = 1, \
             .ascii = (ASCII), \
+            .statically_allocated = 1, \
         }, \
     }
 #define _PyASCIIObject_INIT(LITERAL) \
diff --git a/Include/internal/pycore_runtime_init_generated.h b/Include/internal/pycore_runtime_init_generated.h
index 7b9c73dd1edf3b..1defa39f816e78 100644
--- a/Include/internal/pycore_runtime_init_generated.h
+++ b/Include/internal/pycore_runtime_init_generated.h
@@ -8,6 +8,9 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "pycore_long.h"          // _PyLong_DIGIT_INIT()
+
+
 /* The following is auto-generated by Tools/build/generate_global_objects.py. */
 #define _Py_small_ints_INIT { \
     _PyLong_DIGIT_INIT(-5), \
@@ -539,6 +542,7 @@ extern "C" {
     INIT_STR(anon_lambda, "<lambda>"), \
     INIT_STR(anon_listcomp, "<listcomp>"), \
     INIT_STR(anon_module, "<module>"), \
+    INIT_STR(anon_null, "<NULL>"), \
     INIT_STR(anon_setcomp, "<setcomp>"), \
     INIT_STR(anon_string, "<string>"), \
     INIT_STR(anon_unknown, "<unknown>"), \
@@ -546,15 +550,18 @@ extern "C" {
     INIT_STR(dbl_close_br, "}}"), \
     INIT_STR(dbl_open_br, "{{"), \
     INIT_STR(dbl_percent, "%%"), \
+    INIT_STR(defaults, ".defaults"), \
     INIT_STR(dot, "."), \
     INIT_STR(dot_locals, ".<locals>"), \
     INIT_STR(empty, ""), \
+    INIT_STR(generic_base, ".generic_base"), \
     INIT_STR(json_decoder, "json.decoder"), \
+    INIT_STR(kwdefaults, ".kwdefaults"), \
     INIT_STR(list_err, "list index out of range"), \
     INIT_STR(newline, "\n"), \
     INIT_STR(open_br, "{"), \
     INIT_STR(percent, "%"), \
-    INIT_STR(shim_name, "<shim>"), \
+    INIT_STR(type_params, ".type_params"), \
     INIT_STR(utf_8, "utf-8"), \
 }
 
@@ -596,6 +603,8 @@ extern "C" {
     INIT_ID(__class__), \
     INIT_ID(__class_getitem__), \
     INIT_ID(__classcell__), \
+    INIT_ID(__classdict__), \
+    INIT_ID(__classdictcell__), \
     INIT_ID(__complex__), \
     INIT_ID(__contains__), \
     INIT_ID(__copy__), \
@@ -658,6 +667,7 @@ extern "C" {
     INIT_ID(__lshift__), \
     INIT_ID(__lt__), \
     INIT_ID(__main__), \
+    INIT_ID(__match_args__), \
     INIT_ID(__matmul__), \
     INIT_ID(__missing__), \
     INIT_ID(__mod__), \
@@ -718,6 +728,7 @@ extern "C" {
     INIT_ID(__subclasshook__), \
     INIT_ID(__truediv__), \
     INIT_ID(__trunc__), \
+    INIT_ID(__type_params__), \
     INIT_ID(__typing_is_unpacked_typevartuple__), \
     INIT_ID(__typing_prepare_subst__), \
     INIT_ID(__typing_subst__), \
@@ -768,6 +779,7 @@ extern "C" {
     INIT_ID(a), \
     INIT_ID(abs_tol), \
     INIT_ID(access), \
+    INIT_ID(aclose), \
     INIT_ID(add), \
     INIT_ID(add_done_callback), \
     INIT_ID(after_in_child), \
@@ -778,7 +790,9 @@ extern "C" {
     INIT_ID(arguments), \
     INIT_ID(argv), \
     INIT_ID(as_integer_ratio), \
+    INIT_ID(asend), \
     INIT_ID(ast), \
+    INIT_ID(athrow), \
     INIT_ID(attribute), \
     INIT_ID(authorizer_callback), \
     INIT_ID(autocommit), \
@@ -789,6 +803,7 @@ extern "C" {
     INIT_ID(big), \
     INIT_ID(binary_form), \
     INIT_ID(block), \
+    INIT_ID(bound), \
     INIT_ID(buffer), \
     INIT_ID(buffer_callback), \
     INIT_ID(buffer_size), \
@@ -809,6 +824,7 @@ extern "C" {
     INIT_ID(call), \
     INIT_ID(call_exception_handler), \
     INIT_ID(call_soon), \
+    INIT_ID(callback), \
     INIT_ID(cancel), \
     INIT_ID(capath), \
     INIT_ID(category), \
@@ -844,11 +860,13 @@ extern "C" {
     INIT_ID(compile_mode), \
     INIT_ID(consts), \
     INIT_ID(context), \
+    INIT_ID(contravariant), \
     INIT_ID(cookie), \
     INIT_ID(copy), \
     INIT_ID(copyreg), \
     INIT_ID(coro), \
     INIT_ID(count), \
+    INIT_ID(covariant), \
     INIT_ID(cwd), \
     INIT_ID(d), \
     INIT_ID(data), \
@@ -877,7 +895,6 @@ extern "C" {
     INIT_ID(dont_inherit), \
     INIT_ID(dst), \
     INIT_ID(dst_dir_fd), \
-    INIT_ID(duration), \
     INIT_ID(e), \
     INIT_ID(eager_start), \
     INIT_ID(effective_ids), \
@@ -893,12 +910,13 @@ extern "C" {
     INIT_ID(errors), \
     INIT_ID(event), \
     INIT_ID(eventmask), \
-    INIT_ID(exc_type), \
-    INIT_ID(exc_value), \
     INIT_ID(excepthook), \
     INIT_ID(exception), \
+    INIT_ID(existing_file_name), \
     INIT_ID(exp), \
     INIT_ID(extend), \
+    INIT_ID(extra_tokens), \
+    INIT_ID(f), \
     INIT_ID(facility), \
     INIT_ID(factory), \
     INIT_ID(false), \
@@ -922,7 +940,6 @@ extern "C" {
     INIT_ID(flush), \
     INIT_ID(follow_symlinks), \
     INIT_ID(format), \
-    INIT_ID(frequency), \
     INIT_ID(from_param), \
     INIT_ID(fromlist), \
     INIT_ID(fromtimestamp), \
@@ -930,6 +947,7 @@ extern "C" {
     INIT_ID(fset), \
     INIT_ID(func), \
     INIT_ID(future), \
+    INIT_ID(g), \
     INIT_ID(generation), \
     INIT_ID(genexpr), \
     INIT_ID(get), \
@@ -943,6 +961,7 @@ extern "C" {
     INIT_ID(globals), \
     INIT_ID(groupindex), \
     INIT_ID(groups), \
+    INIT_ID(h), \
     INIT_ID(handle), \
     INIT_ID(hash_name), \
     INIT_ID(header), \
@@ -951,6 +970,7 @@ extern "C" {
     INIT_ID(hook), \
     INIT_ID(id), \
     INIT_ID(ident), \
+    INIT_ID(identity_hint), \
     INIT_ID(ignore), \
     INIT_ID(imag), \
     INIT_ID(importlib), \
@@ -958,6 +978,7 @@ extern "C" {
     INIT_ID(incoming), \
     INIT_ID(indexgroup), \
     INIT_ID(inf), \
+    INIT_ID(infer_variance), \
     INIT_ID(inheritable), \
     INIT_ID(initial), \
     INIT_ID(initial_bytes), \
@@ -970,6 +991,7 @@ extern "C" {
     INIT_ID(instructions), \
     INIT_ID(intern), \
     INIT_ID(intersection), \
+    INIT_ID(interval), \
     INIT_ID(is_running), \
     INIT_ID(isatty), \
     INIT_ID(isinstance), \
@@ -1047,10 +1069,12 @@ extern "C" {
     INIT_ID(namespaces), \
     INIT_ID(narg), \
     INIT_ID(ndigits), \
+    INIT_ID(new_file_name), \
     INIT_ID(new_limit), \
     INIT_ID(newline), \
     INIT_ID(newlines), \
     INIT_ID(next), \
+    INIT_ID(nlocals), \
     INIT_ID(node_depth), \
     INIT_ID(node_offset), \
     INIT_ID(ns), \
@@ -1074,6 +1098,7 @@ extern "C" {
     INIT_ID(optimize), \
     INIT_ID(options), \
     INIT_ID(order), \
+    INIT_ID(origin), \
     INIT_ID(out_fd), \
     INIT_ID(outgoing), \
     INIT_ID(overlapped), \
@@ -1099,6 +1124,7 @@ extern "C" {
     INIT_ID(priority), \
     INIT_ID(progress), \
     INIT_ID(progress_handler), \
+    INIT_ID(progress_routine), \
     INIT_ID(proto), \
     INIT_ID(protocol), \
     INIT_ID(ps1), \
@@ -1158,7 +1184,6 @@ extern "C" {
     INIT_ID(sleep), \
     INIT_ID(sock), \
     INIT_ID(sort), \
-    INIT_ID(sound), \
     INIT_ID(source), \
     INIT_ID(source_traceback), \
     INIT_ID(src), \
@@ -1171,6 +1196,7 @@ extern "C" {
     INIT_ID(stdin), \
     INIT_ID(stdout), \
     INIT_ID(step), \
+    INIT_ID(steps), \
     INIT_ID(store_name), \
     INIT_ID(strategy), \
     INIT_ID(strftime), \
@@ -1199,7 +1225,6 @@ extern "C" {
     INIT_ID(timetuple), \
     INIT_ID(top), \
     INIT_ID(trace_callback), \
-    INIT_ID(traceback), \
     INIT_ID(trailers), \
     INIT_ID(translate), \
     INIT_ID(true), \
@@ -1207,6 +1232,7 @@ extern "C" {
     INIT_ID(twice), \
     INIT_ID(txt), \
     INIT_ID(type), \
+    INIT_ID(type_params), \
     INIT_ID(tz), \
     INIT_ID(tzname), \
     INIT_ID(uid), \
diff --git a/Include/internal/pycore_semaphore.h b/Include/internal/pycore_semaphore.h
new file mode 100644
index 00000000000000..4c37df7b39a48a
--- /dev/null
+++ b/Include/internal/pycore_semaphore.h
@@ -0,0 +1,66 @@
+// The _PySemaphore API a simplified cross-platform semaphore used to implement
+// wakeup/sleep.
+#ifndef Py_INTERNAL_SEMAPHORE_H
+#define Py_INTERNAL_SEMAPHORE_H
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_pythread.h"      // _POSIX_SEMAPHORES
+#include "pycore_time.h"          // _PyTime_t
+
+#ifdef MS_WINDOWS
+#   define WIN32_LEAN_AND_MEAN
+#   include <windows.h>
+#elif defined(HAVE_PTHREAD_H)
+#   include <pthread.h>
+#elif defined(HAVE_PTHREAD_STUBS)
+#   include "cpython/pthread_stubs.h"
+#else
+#   error "Require native threads. See https://bugs.python.org/issue31370"
+#endif
+
+#if (defined(_POSIX_SEMAPHORES) && (_POSIX_SEMAPHORES+0) != -1 && \
+        defined(HAVE_SEM_TIMEDWAIT))
+#   define _Py_USE_SEMAPHORES
+#   include <semaphore.h>
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _PySemaphore {
+#if defined(MS_WINDOWS)
+    HANDLE platform_sem;
+#elif defined(_Py_USE_SEMAPHORES)
+    sem_t platform_sem;
+#else
+    pthread_mutex_t mutex;
+    pthread_cond_t cond;
+    int counter;
+#endif
+} _PySemaphore;
+
+// Puts the current thread to sleep until _PySemaphore_Wakeup() is called.
+// If `detach` is true, then the thread will detach/release the GIL while
+// sleeping.
+PyAPI_FUNC(int)
+_PySemaphore_Wait(_PySemaphore *sema, _PyTime_t timeout_ns, int detach);
+
+// Wakes up a single thread waiting on sema. Note that _PySemaphore_Wakeup()
+// can be called before _PySemaphore_Wait().
+PyAPI_FUNC(void)
+_PySemaphore_Wakeup(_PySemaphore *sema);
+
+// Initializes/destroys a semaphore
+PyAPI_FUNC(void) _PySemaphore_Init(_PySemaphore *sema);
+PyAPI_FUNC(void) _PySemaphore_Destroy(_PySemaphore *sema);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_SEMAPHORE_H */
diff --git a/Include/internal/pycore_setobject.h b/Include/internal/pycore_setobject.h
new file mode 100644
index 00000000000000..34a00e6d45fe69
--- /dev/null
+++ b/Include/internal/pycore_setobject.h
@@ -0,0 +1,27 @@
+#ifndef Py_INTERNAL_SETOBJECT_H
+#define Py_INTERNAL_SETOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+// Export for '_pickle' shared extension
+PyAPI_FUNC(int) _PySet_NextEntry(
+    PyObject *set,
+    Py_ssize_t *pos,
+    PyObject **key,
+    Py_hash_t *hash);
+
+// Export for '_pickle' shared extension
+PyAPI_FUNC(int) _PySet_Update(PyObject *set, PyObject *iterable);
+
+// Export for the gdb plugin's (python-gdb.py) benefit
+PyAPI_DATA(PyObject *) _PySet_Dummy;
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_SETOBJECT_H
diff --git a/Include/internal/pycore_signal.h b/Include/internal/pycore_signal.h
index ca3f69d09fc0c1..47213a34ab77b5 100644
--- a/Include/internal/pycore_signal.h
+++ b/Include/internal/pycore_signal.h
@@ -10,10 +10,12 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_atomic.h"         // _Py_atomic_address
+#include <signal.h>               // NSIG
 
-#include <signal.h>                // NSIG
 
+// Restore signals that the interpreter has called SIG_IGN on to SIG_DFL.
+// Export for '_posixsubprocess' shared extension.
+PyAPI_FUNC(void) _Py_RestoreSignals(void);
 
 #ifdef _SIG_MAXSIG
    // gh-91145: On FreeBSD, <signal.h> defines NSIG as 32: it doesn't include
@@ -35,12 +37,10 @@ extern "C" {
 #define INVALID_FD (-1)
 
 struct _signals_runtime_state {
-    volatile struct {
-        _Py_atomic_int tripped;
-        /* func is atomic to ensure that PyErr_SetInterrupt is async-signal-safe
-         * (even though it would probably be otherwise, anyway).
-         */
-        _Py_atomic_address func;
+    struct {
+        // tripped and func should be accessed using atomic ops.
+        int tripped;
+        PyObject* func;
     } handlers[Py_NSIG];
 
     volatile struct {
@@ -60,8 +60,9 @@ struct _signals_runtime_state {
 #endif
     } wakeup;
 
-    /* Speed up sigcheck() when none tripped */
-    _Py_atomic_int is_tripped;
+    /* Speed up sigcheck() when none tripped.
+       is_tripped should be accessed using atomic ops. */
+    int is_tripped;
 
     /* These objects necessarily belong to the main interpreter. */
     PyObject *default_handler;
@@ -92,6 +93,15 @@ struct _signals_runtime_state {
     }
 
 
+// Export for '_multiprocessing' shared extension
+PyAPI_FUNC(int) _PyOS_IsMainThread(void);
+
+#ifdef MS_WINDOWS
+// <windows.h> is not included by Python.h so use void* instead of HANDLE.
+// Export for '_multiprocessing' shared extension
+PyAPI_FUNC(void*) _PyOS_SigintEvent(void);
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_strhex.h b/Include/internal/pycore_strhex.h
index f427b4d695bd29..225f423912f2c2 100644
--- a/Include/internal/pycore_strhex.h
+++ b/Include/internal/pycore_strhex.h
@@ -9,21 +9,24 @@ extern "C" {
 #endif
 
 // Returns a str() containing the hex representation of argbuf.
+// Export for '_hashlib' shared extension.
 PyAPI_FUNC(PyObject*) _Py_strhex(const
     char* argbuf,
     const Py_ssize_t arglen);
 
 // Returns a bytes() containing the ASCII hex representation of argbuf.
-PyAPI_FUNC(PyObject*) _Py_strhex_bytes(
+extern PyObject* _Py_strhex_bytes(
     const char* argbuf,
     const Py_ssize_t arglen);
 
 // These variants include support for a separator between every N bytes:
-PyAPI_FUNC(PyObject*) _Py_strhex_with_sep(
+extern PyObject* _Py_strhex_with_sep(
     const char* argbuf,
     const Py_ssize_t arglen,
     PyObject* sep,
     const int bytes_per_group);
+
+// Export for 'binascii' shared extension
 PyAPI_FUNC(PyObject*) _Py_strhex_bytes_with_sep(
     const char* argbuf,
     const Py_ssize_t arglen,
diff --git a/Include/internal/pycore_structseq.h b/Include/internal/pycore_structseq.h
index 6f5dfc12707cf8..5cff165627502b 100644
--- a/Include/internal/pycore_structseq.h
+++ b/Include/internal/pycore_structseq.h
@@ -11,7 +11,8 @@ extern "C" {
 
 /* other API */
 
-PyAPI_FUNC(PyTypeObject *) _PyStructSequence_NewType(
+// Export for '_curses' shared extension
+PyAPI_FUNC(PyTypeObject*) _PyStructSequence_NewType(
     PyStructSequence_Desc *desc,
     unsigned long tp_flags);
 
diff --git a/Include/internal/pycore_symtable.h b/Include/internal/pycore_symtable.h
index 9a005be5402c4e..1d782ca2c96e05 100644
--- a/Include/internal/pycore_symtable.h
+++ b/Include/internal/pycore_symtable.h
@@ -10,8 +10,17 @@ extern "C" {
 
 struct _mod;   // Type defined in pycore_ast.h
 
-typedef enum _block_type { FunctionBlock, ClassBlock, ModuleBlock, AnnotationBlock }
-    _Py_block_ty;
+typedef enum _block_type {
+    FunctionBlock, ClassBlock, ModuleBlock,
+    // Used for annotations if 'from __future__ import annotations' is active.
+    // Annotation blocks cannot bind names and are not evaluated.
+    AnnotationBlock,
+    // Used for generics and type aliases. These work mostly like functions
+    // (see PEP 695 for details). The three different blocks function identically;
+    // they are different enum entries only so that error messages can be more
+    // precise.
+    TypeVarBoundBlock, TypeAliasBlock, TypeParamBlock
+} _Py_block_ty;
 
 typedef enum _comprehension_type {
     NoComprehension = 0,
@@ -49,7 +58,7 @@ typedef struct _symtable_entry {
     PyObject *ste_varnames;  /* list of function parameters */
     PyObject *ste_children;  /* list of child blocks */
     PyObject *ste_directives;/* locations of global and nonlocal statements */
-    _Py_block_ty ste_type;   /* module, class, function or annotation */
+    _Py_block_ty ste_type;
     int ste_nested;      /* true if block is nested */
     unsigned ste_free : 1;        /* true if block has free variables */
     unsigned ste_child_free : 1;  /* true if a child block has free vars,
@@ -64,8 +73,12 @@ typedef struct _symtable_entry {
     unsigned ste_needs_class_closure : 1; /* for class scopes, true if a
                                              closure over __class__
                                              should be created */
+    unsigned ste_needs_classdict : 1; /* for class scopes, true if a closure
+                                         over the class dict should be created */
     unsigned ste_comp_inlined : 1; /* true if this comprehension is inlined */
     unsigned ste_comp_iter_target : 1; /* true if visiting comprehension target */
+    unsigned ste_can_see_class_scope : 1; /* true if this block can see names bound in an
+                                             enclosing class scope */
     int ste_comp_iter_expr; /* non-zero if visiting a comprehension range expression */
     int ste_lineno;          /* first line of block */
     int ste_col_offset;      /* offset of first line of block */
@@ -82,12 +95,13 @@ extern PyTypeObject PySTEntry_Type;
 
 extern long _PyST_GetSymbol(PySTEntryObject *, PyObject *);
 extern int _PyST_GetScope(PySTEntryObject *, PyObject *);
+extern int _PyST_IsFunctionLike(PySTEntryObject *);
 
 extern struct symtable* _PySymtable_Build(
     struct _mod *mod,
     PyObject *filename,
     PyFutureFeatures *future);
-PyAPI_FUNC(PySTEntryObject *) PySymtable_Lookup(struct symtable *, void *);
+extern PySTEntryObject* _PySymtable_Lookup(struct symtable *, void *);
 
 extern void _PySymtable_Free(struct symtable *);
 
@@ -105,14 +119,16 @@ extern PyObject* _Py_Mangle(PyObject *p, PyObject *name);
 #define DEF_IMPORT 2<<6        /* assignment occurred via import */
 #define DEF_ANNOT 2<<7         /* this name is annotated */
 #define DEF_COMP_ITER 2<<8     /* this name is a comprehension iteration variable */
+#define DEF_TYPE_PARAM 2<<9    /* this name is a type parameter */
+#define DEF_COMP_CELL 2<<10    /* this name is a cell in an inlined comprehension */
 
 #define DEF_BOUND (DEF_LOCAL | DEF_PARAM | DEF_IMPORT)
 
 /* GLOBAL_EXPLICIT and GLOBAL_IMPLICIT are used internally by the symbol
    table.  GLOBAL is returned from PyST_GetScope() for either of them.
-   It is stored in ste_symbols at bits 12-15.
+   It is stored in ste_symbols at bits 13-16.
 */
-#define SCOPE_OFFSET 11
+#define SCOPE_OFFSET 12
 #define SCOPE_MASK (DEF_GLOBAL | DEF_LOCAL | DEF_PARAM | DEF_NONLOCAL)
 
 #define LOCAL 1
diff --git a/Include/internal/pycore_sysmodule.h b/Include/internal/pycore_sysmodule.h
index b4b1febafa4479..9b8eafd3d6cfd3 100644
--- a/Include/internal/pycore_sysmodule.h
+++ b/Include/internal/pycore_sysmodule.h
@@ -8,17 +8,23 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-PyAPI_FUNC(int) _PySys_Audit(
+// Export for '_pickle' shared extension
+PyAPI_FUNC(PyObject*) _PySys_GetAttr(PyThreadState *tstate, PyObject *name);
+
+// Export for '_pickle' shared extension
+PyAPI_FUNC(size_t) _PySys_GetSizeOf(PyObject *);
+
+extern int _PySys_Audit(
     PyThreadState *tstate,
     const char *event,
     const char *argFormat,
     ...);
 
-/* We want minimal exposure of this function, so use extern rather than
-   PyAPI_FUNC() to not export the symbol. */
+// _PySys_ClearAuditHooks() must not be exported: use extern rather than
+// PyAPI_FUNC(). We want minimal exposure of this function.
 extern void _PySys_ClearAuditHooks(PyThreadState *tstate);
 
-PyAPI_FUNC(int) _PySys_SetAttr(PyObject *, PyObject *);
+extern int _PySys_SetAttr(PyObject *, PyObject *);
 
 extern int _PySys_ClearAttrString(PyInterpreterState *interp,
                                   const char *name, int verbose);
diff --git a/Include/internal/pycore_time.h b/Include/internal/pycore_time.h
index 949170c4493799..dabbd7b41556cd 100644
--- a/Include/internal/pycore_time.h
+++ b/Include/internal/pycore_time.h
@@ -1,3 +1,46 @@
+// The _PyTime_t API is written to use timestamp and timeout values stored in
+// various formats and to read clocks.
+//
+// The _PyTime_t type is an integer to support directly common arithmetic
+// operations like t1 + t2.
+//
+// The _PyTime_t API supports a resolution of 1 nanosecond. The _PyTime_t type
+// is signed to support negative timestamps. The supported range is around
+// [-292.3 years; +292.3 years]. Using the Unix epoch (January 1st, 1970), the
+// supported date range is around [1677-09-21; 2262-04-11].
+//
+// Formats:
+//
+// * seconds
+// * seconds as a floating pointer number (C double)
+// * milliseconds (10^-3 seconds)
+// * microseconds (10^-6 seconds)
+// * 100 nanoseconds (10^-7 seconds)
+// * nanoseconds (10^-9 seconds)
+// * timeval structure, 1 microsecond resolution (10^-6 seconds)
+// * timespec structure, 1 nanosecond resolution (10^-9 seconds)
+//
+// Integer overflows are detected and raise OverflowError. Conversion to a
+// resolution worse than 1 nanosecond is rounded correctly with the requested
+// rounding mode. There are 4 rounding modes: floor (towards -inf), ceiling
+// (towards +inf), half even and up (away from zero).
+//
+// Some functions clamp the result in the range [_PyTime_MIN; _PyTime_MAX], so
+// the caller doesn't have to handle errors and doesn't need to hold the GIL.
+// For example, _PyTime_Add(t1, t2) computes t1+t2 and clamp the result on
+// overflow.
+//
+// Clocks:
+//
+// * System clock
+// * Monotonic clock
+// * Performance counter
+//
+// Operations like (t * k / q) with integers are implemented in a way to reduce
+// the risk of integer overflow. Such operation is used to convert a clock
+// value expressed in ticks with a frequency to _PyTime_t, like
+// QueryPerformanceCounter() with QueryPerformanceFrequency().
+
 #ifndef Py_INTERNAL_TIME_H
 #define Py_INTERNAL_TIME_H
 #ifdef __cplusplus
@@ -9,17 +52,329 @@ extern "C" {
 #endif
 
 
-struct _time_runtime_state {
-#ifdef HAVE_TIMES
-    int ticks_per_second_initialized;
-    long ticks_per_second;
-#else
-    int _not_used;
+#ifdef __clang__
+struct timeval;
+#endif
+
+// _PyTime_t: Python timestamp with subsecond precision. It can be used to
+// store a duration, and so indirectly a date (related to another date, like
+// UNIX epoch).
+typedef int64_t _PyTime_t;
+// _PyTime_MIN nanoseconds is around -292.3 years
+#define _PyTime_MIN INT64_MIN
+// _PyTime_MAX nanoseconds is around +292.3 years
+#define _PyTime_MAX INT64_MAX
+#define _SIZEOF_PYTIME_T 8
+
+typedef enum {
+    // Round towards minus infinity (-inf).
+    // For example, used to read a clock.
+    _PyTime_ROUND_FLOOR=0,
+
+    // Round towards infinity (+inf).
+    // For example, used for timeout to wait "at least" N seconds.
+    _PyTime_ROUND_CEILING=1,
+
+    // Round to nearest with ties going to nearest even integer.
+    // For example, used to round from a Python float.
+    _PyTime_ROUND_HALF_EVEN=2,
+
+    // Round away from zero
+    // For example, used for timeout. _PyTime_ROUND_CEILING rounds
+    // -1e-9 to 0 milliseconds which causes bpo-31786 issue.
+    // _PyTime_ROUND_UP rounds -1e-9 to -1 millisecond which keeps
+    // the timeout sign as expected. select.poll(timeout) must block
+    // for negative values.
+    _PyTime_ROUND_UP=3,
+
+    // _PyTime_ROUND_TIMEOUT (an alias for _PyTime_ROUND_UP) should be
+    // used for timeouts.
+    _PyTime_ROUND_TIMEOUT = _PyTime_ROUND_UP
+} _PyTime_round_t;
+
+
+// Convert a time_t to a PyLong.
+// Export for '_testinternalcapi' shared extension
+PyAPI_FUNC(PyObject*) _PyLong_FromTime_t(time_t sec);
+
+// Convert a PyLong to a time_t.
+// Export for '_datetime' shared extension
+PyAPI_FUNC(time_t) _PyLong_AsTime_t(PyObject *obj);
+
+// Convert a number of seconds, int or float, to time_t.
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(int) _PyTime_ObjectToTime_t(
+    PyObject *obj,
+    time_t *sec,
+    _PyTime_round_t);
+
+// Convert a number of seconds, int or float, to a timeval structure.
+// usec is in the range [0; 999999] and rounded towards zero.
+// For example, -1.2 is converted to (-2, 800000).
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(int) _PyTime_ObjectToTimeval(
+    PyObject *obj,
+    time_t *sec,
+    long *usec,
+    _PyTime_round_t);
+
+// Convert a number of seconds, int or float, to a timespec structure.
+// nsec is in the range [0; 999999999] and rounded towards zero.
+// For example, -1.2 is converted to (-2, 800000000).
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(int) _PyTime_ObjectToTimespec(
+    PyObject *obj,
+    time_t *sec,
+    long *nsec,
+    _PyTime_round_t);
+
+
+// Create a timestamp from a number of seconds.
+// Export for '_socket' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_FromSeconds(int seconds);
+
+// Create a timestamp from a number of seconds in double.
+// Export for '_socket' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_FromSecondsDouble(double seconds, _PyTime_round_t round);
+
+// Macro to create a timestamp from a number of seconds, no integer overflow.
+// Only use the macro for small values, prefer _PyTime_FromSeconds().
+#define _PYTIME_FROMSECONDS(seconds) \
+            ((_PyTime_t)(seconds) * (1000 * 1000 * 1000))
+
+// Create a timestamp from a number of nanoseconds.
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_FromNanoseconds(_PyTime_t ns);
+
+// Create a timestamp from a number of microseconds.
+// Clamp to [_PyTime_MIN; _PyTime_MAX] on overflow.
+extern _PyTime_t _PyTime_FromMicrosecondsClamp(_PyTime_t us);
+
+// Create a timestamp from nanoseconds (Python int).
+// Export for '_lsprof' shared extension.
+PyAPI_FUNC(int) _PyTime_FromNanosecondsObject(_PyTime_t *t,
+    PyObject *obj);
+
+// Convert a number of seconds (Python float or int) to a timestamp.
+// Raise an exception and return -1 on error, return 0 on success.
+// Export for '_socket' shared extension.
+PyAPI_FUNC(int) _PyTime_FromSecondsObject(_PyTime_t *t,
+    PyObject *obj,
+    _PyTime_round_t round);
+
+// Convert a number of milliseconds (Python float or int, 10^-3) to a timestamp.
+// Raise an exception and return -1 on error, return 0 on success.
+// Export for 'select' shared extension.
+PyAPI_FUNC(int) _PyTime_FromMillisecondsObject(_PyTime_t *t,
+    PyObject *obj,
+    _PyTime_round_t round);
+
+// Convert a timestamp to a number of seconds as a C double.
+// Export for '_socket' shared extension.
+PyAPI_FUNC(double) _PyTime_AsSecondsDouble(_PyTime_t t);
+
+// Convert timestamp to a number of milliseconds (10^-3 seconds).
+// Export for '_ssl' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_AsMilliseconds(_PyTime_t t,
+    _PyTime_round_t round);
+
+// Convert timestamp to a number of microseconds (10^-6 seconds).
+// Export for '_queue' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_AsMicroseconds(_PyTime_t t,
+    _PyTime_round_t round);
+
+// Convert timestamp to a number of nanoseconds (10^-9 seconds).
+extern _PyTime_t _PyTime_AsNanoseconds(_PyTime_t t);
+
+#ifdef MS_WINDOWS
+// Convert timestamp to a number of 100 nanoseconds (10^-7 seconds).
+extern _PyTime_t _PyTime_As100Nanoseconds(_PyTime_t t,
+    _PyTime_round_t round);
 #endif
-};
+
+// Convert timestamp to a number of nanoseconds (10^-9 seconds) as a Python int
+// object.
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(PyObject*) _PyTime_AsNanosecondsObject(_PyTime_t t);
+
+#ifndef MS_WINDOWS
+// Create a timestamp from a timeval structure.
+// Raise an exception and return -1 on overflow, return 0 on success.
+extern int _PyTime_FromTimeval(_PyTime_t *tp, struct timeval *tv);
+#endif
+
+// Convert a timestamp to a timeval structure (microsecond resolution).
+// tv_usec is always positive.
+// Raise an exception and return -1 if the conversion overflowed,
+// return 0 on success.
+// Export for 'select' shared extension.
+PyAPI_FUNC(int) _PyTime_AsTimeval(_PyTime_t t,
+    struct timeval *tv,
+    _PyTime_round_t round);
+
+// Similar to _PyTime_AsTimeval() but don't raise an exception on overflow.
+// On overflow, clamp tv_sec to _PyTime_t min/max.
+// Export for 'select' shared extension.
+PyAPI_FUNC(void) _PyTime_AsTimeval_clamp(_PyTime_t t,
+    struct timeval *tv,
+    _PyTime_round_t round);
+
+// Convert a timestamp to a number of seconds (secs) and microseconds (us).
+// us is always positive. This function is similar to _PyTime_AsTimeval()
+// except that secs is always a time_t type, whereas the timeval structure
+// uses a C long for tv_sec on Windows.
+// Raise an exception and return -1 if the conversion overflowed,
+// return 0 on success.
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(int) _PyTime_AsTimevalTime_t(
+    _PyTime_t t,
+    time_t *secs,
+    int *us,
+    _PyTime_round_t round);
+
+#if defined(HAVE_CLOCK_GETTIME) || defined(HAVE_KQUEUE)
+// Create a timestamp from a timespec structure.
+// Raise an exception and return -1 on overflow, return 0 on success.
+extern int _PyTime_FromTimespec(_PyTime_t *tp, const struct timespec *ts);
+
+// Convert a timestamp to a timespec structure (nanosecond resolution).
+// tv_nsec is always positive.
+// Raise an exception and return -1 on error, return 0 on success.
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(int) _PyTime_AsTimespec(_PyTime_t t, struct timespec *ts);
+
+// Similar to _PyTime_AsTimespec() but don't raise an exception on overflow.
+// On overflow, clamp tv_sec to _PyTime_t min/max.
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(void) _PyTime_AsTimespec_clamp(_PyTime_t t, struct timespec *ts);
+#endif
+
+
+// Compute t1 + t2. Clamp to [_PyTime_MIN; _PyTime_MAX] on overflow.
+extern _PyTime_t _PyTime_Add(_PyTime_t t1, _PyTime_t t2);
+
+// Structure used by time.get_clock_info()
+typedef struct {
+    const char *implementation;
+    int monotonic;
+    int adjustable;
+    double resolution;
+} _Py_clock_info_t;
+
+// Get the current time from the system clock.
+//
+// If the internal clock fails, silently ignore the error and return 0.
+// On integer overflow, silently ignore the overflow and clamp the clock to
+// [_PyTime_MIN; _PyTime_MAX].
+//
+// Use _PyTime_GetSystemClockWithInfo() to check for failure.
+// Export for '_random' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_GetSystemClock(void);
+
+// Get the current time from the system clock.
+// On success, set *t and *info (if not NULL), and return 0.
+// On error, raise an exception and return -1.
+extern int _PyTime_GetSystemClockWithInfo(
+    _PyTime_t *t,
+    _Py_clock_info_t *info);
+
+// Get the time of a monotonic clock, i.e. a clock that cannot go backwards.
+// The clock is not affected by system clock updates. The reference point of
+// the returned value is undefined, so that only the difference between the
+// results of consecutive calls is valid.
+//
+// If the internal clock fails, silently ignore the error and return 0.
+// On integer overflow, silently ignore the overflow and clamp the clock to
+// [_PyTime_MIN; _PyTime_MAX].
+//
+// Use _PyTime_GetMonotonicClockWithInfo() to check for failure.
+// Export for '_random' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_GetMonotonicClock(void);
+
+// Get the time of a monotonic clock, i.e. a clock that cannot go backwards.
+// The clock is not affected by system clock updates. The reference point of
+// the returned value is undefined, so that only the difference between the
+// results of consecutive calls is valid.
+//
+// Fill info (if set) with information of the function used to get the time.
+//
+// Return 0 on success, raise an exception and return -1 on error.
+// Export for '_testsinglephase' shared extension.
+PyAPI_FUNC(int) _PyTime_GetMonotonicClockWithInfo(
+    _PyTime_t *t,
+    _Py_clock_info_t *info);
+
+
+// Converts a timestamp to the Gregorian time, using the local time zone.
+// Return 0 on success, raise an exception and return -1 on error.
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(int) _PyTime_localtime(time_t t, struct tm *tm);
+
+// Converts a timestamp to the Gregorian time, assuming UTC.
+// Return 0 on success, raise an exception and return -1 on error.
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(int) _PyTime_gmtime(time_t t, struct tm *tm);
+
+// Get the performance counter: clock with the highest available resolution to
+// measure a short duration.
+//
+// If the internal clock fails, silently ignore the error and return 0.
+// On integer overflow, silently ignore the overflow and clamp the clock to
+// [_PyTime_MIN; _PyTime_MAX].
+//
+// Use _PyTime_GetPerfCounterWithInfo() to check for failure.
+// Export for '_lsprof' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyTime_GetPerfCounter(void);
+
+// Get the performance counter: clock with the highest available resolution to
+// measure a short duration.
+//
+// Fill info (if set) with information of the function used to get the time.
+//
+// Return 0 on success, raise an exception and return -1 on error.
+extern int _PyTime_GetPerfCounterWithInfo(
+    _PyTime_t *t,
+    _Py_clock_info_t *info);
+
+
+// Create a deadline.
+// Pseudo code: _PyTime_GetMonotonicClock() + timeout.
+// Export for '_ssl' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyDeadline_Init(_PyTime_t timeout);
+
+// Get remaining time from a deadline.
+// Pseudo code: deadline - _PyTime_GetMonotonicClock().
+// Export for '_ssl' shared extension.
+PyAPI_FUNC(_PyTime_t) _PyDeadline_Get(_PyTime_t deadline);
+
+
+// --- _PyTimeFraction -------------------------------------------------------
+
+typedef struct {
+    _PyTime_t numer;
+    _PyTime_t denom;
+} _PyTimeFraction;
+
+// Set a fraction.
+// Return 0 on success.
+// Return -1 if the fraction is invalid.
+extern int _PyTimeFraction_Set(
+    _PyTimeFraction *frac,
+    _PyTime_t numer,
+    _PyTime_t denom);
+
+// Compute ticks * frac.numer / frac.denom.
+// Clamp to [_PyTime_MIN; _PyTime_MAX] on overflow.
+extern _PyTime_t _PyTimeFraction_Mul(
+    _PyTime_t ticks,
+    const _PyTimeFraction *frac);
+
+// Compute a clock resolution: frac.numer / frac.denom / 1e9.
+extern double _PyTimeFraction_Resolution(
+    const _PyTimeFraction *frac);
 
 
 #ifdef __cplusplus
 }
 #endif
-#endif /* !Py_INTERNAL_TIME_H */
+#endif   // !Py_INTERNAL_TIME_H
diff --git a/Include/internal/pycore_token.h b/Include/internal/pycore_token.h
index b9df8766736adf..571cd6249f2812 100644
--- a/Include/internal/pycore_token.h
+++ b/Include/internal/pycore_token.h
@@ -1,4 +1,4 @@
-/* Auto-generated by Tools/build/generate_token.py */
+// Auto-generated by Tools/build/generate_token.py
 
 /* Token types */
 #ifndef Py_INTERNAL_TOKEN_H
@@ -69,16 +69,16 @@ extern "C" {
 #define COLONEQUAL      53
 #define EXCLAMATION     54
 #define OP              55
-#define AWAIT           56
-#define ASYNC           57
-#define TYPE_IGNORE     58
-#define TYPE_COMMENT    59
-#define SOFT_KEYWORD    60
-#define FSTRING_START   61
-#define FSTRING_MIDDLE  62
-#define FSTRING_END     63
+#define TYPE_IGNORE     56
+#define TYPE_COMMENT    57
+#define SOFT_KEYWORD    58
+#define FSTRING_START   59
+#define FSTRING_MIDDLE  60
+#define FSTRING_END     61
+#define COMMENT         62
+#define NL              63
 #define ERRORTOKEN      64
-#define N_TOKENS        68
+#define N_TOKENS        66
 #define NT_OFFSET       256
 
 /* Special definitions for cooperation with parser */
@@ -94,7 +94,7 @@ extern "C" {
                                  (x) == FSTRING_MIDDLE)
 
 
-// Symbols exported for test_peg_generator
+// Export these 4 symbols for 'test_peg_generator'
 PyAPI_DATA(const char * const) _PyParser_TokenNames[]; /* Token names */
 PyAPI_FUNC(int) _PyToken_OneChar(int);
 PyAPI_FUNC(int) _PyToken_TwoChars(int, int);
diff --git a/Include/internal/pycore_traceback.h b/Include/internal/pycore_traceback.h
index c393b2c136f2de..10922bff98bd4b 100644
--- a/Include/internal/pycore_traceback.h
+++ b/Include/internal/pycore_traceback.h
@@ -8,6 +8,12 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+// Export for '_ctypes' shared extension
+PyAPI_FUNC(int) _Py_DisplaySourceLine(PyObject *, PyObject *, int, int, int *, PyObject **);
+
+// Export for 'pyexact' shared extension
+PyAPI_FUNC(void) _PyTraceback_Add(const char *, const char *, int);
+
 /* Write the Python traceback into the file 'fd'. For example:
 
        Traceback (most recent call first):
@@ -25,7 +31,7 @@ extern "C" {
 
    This function is signal safe. */
 
-PyAPI_FUNC(void) _Py_DumpTraceback(
+extern void _Py_DumpTraceback(
     int fd,
     PyThreadState *tstate);
 
@@ -52,7 +58,7 @@ PyAPI_FUNC(void) _Py_DumpTraceback(
 
    This function is signal safe. */
 
-PyAPI_FUNC(const char*) _Py_DumpTracebackThreads(
+extern const char* _Py_DumpTracebackThreads(
     int fd,
     PyInterpreterState *interp,
     PyThreadState *current_tstate);
@@ -64,23 +70,23 @@ PyAPI_FUNC(const char*) _Py_DumpTracebackThreads(
    string which is not ready (PyUnicode_WCHAR_KIND).
 
    This function is signal safe. */
-PyAPI_FUNC(void) _Py_DumpASCII(int fd, PyObject *text);
+extern void _Py_DumpASCII(int fd, PyObject *text);
 
 /* Format an integer as decimal into the file descriptor fd.
 
    This function is signal safe. */
-PyAPI_FUNC(void) _Py_DumpDecimal(
+extern void _Py_DumpDecimal(
     int fd,
     size_t value);
 
 /* Format an integer as hexadecimal with width digits into fd file descriptor.
    The function is signal safe. */
-PyAPI_FUNC(void) _Py_DumpHexadecimal(
+extern void _Py_DumpHexadecimal(
     int fd,
     uintptr_t value,
     Py_ssize_t width);
 
-PyAPI_FUNC(PyObject*) _PyTraceBack_FromFrame(
+extern PyObject* _PyTraceBack_FromFrame(
     PyObject *tb_next,
     PyFrameObject *frame);
 
@@ -89,11 +95,10 @@ PyAPI_FUNC(PyObject*) _PyTraceBack_FromFrame(
 
 /* Write the traceback tb to file f. Prefix each line with
    indent spaces followed by the margin (if it is not NULL). */
-PyAPI_FUNC(int) _PyTraceBack_Print_Indented(
-    PyObject *tb, int indent, const char* margin,
-    const char *header_margin, const char *header, PyObject *f);
-PyAPI_FUNC(int) _Py_WriteIndentedMargin(int, const char*, PyObject *);
-PyAPI_FUNC(int) _Py_WriteIndent(int, PyObject *);
+extern int _PyTraceBack_Print(
+    PyObject *tb, const char *header, PyObject *f);
+extern int _Py_WriteIndentedMargin(int, const char*, PyObject *);
+extern int _Py_WriteIndent(int, PyObject *);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_tracemalloc.h b/Include/internal/pycore_tracemalloc.h
index d086adc61c319b..7ddc5bac5d10af 100644
--- a/Include/internal/pycore_tracemalloc.h
+++ b/Include/internal/pycore_tracemalloc.h
@@ -117,6 +117,53 @@ struct _tracemalloc_runtime_state {
     }
 
 
+// Get the traceback where a memory block was allocated.
+//
+// Return a tuple of (filename: str, lineno: int) tuples.
+//
+// Return None if the tracemalloc module is disabled or if the memory block
+// is not tracked by tracemalloc.
+//
+// Raise an exception and return NULL on error.
+//
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(PyObject*) _PyTraceMalloc_GetTraceback(
+    unsigned int domain,
+    uintptr_t ptr);
+
+/* Return non-zero if tracemalloc is tracing */
+extern int _PyTraceMalloc_IsTracing(void);
+
+/* Clear the tracemalloc traces */
+extern void _PyTraceMalloc_ClearTraces(void);
+
+/* Clear the tracemalloc traces */
+extern PyObject* _PyTraceMalloc_GetTraces(void);
+
+/* Clear tracemalloc traceback for an object */
+extern PyObject* _PyTraceMalloc_GetObjectTraceback(PyObject *obj);
+
+/* Initialize tracemalloc */
+extern int _PyTraceMalloc_Init(void);
+
+/* Start tracemalloc */
+extern int _PyTraceMalloc_Start(int max_nframe);
+
+/* Stop tracemalloc */
+extern void _PyTraceMalloc_Stop(void);
+
+/* Get the tracemalloc traceback limit */
+extern int _PyTraceMalloc_GetTracebackLimit(void);
+
+/* Get the memory usage of tracemalloc in bytes */
+extern size_t _PyTraceMalloc_GetMemory(void);
+
+/* Get the current size and peak size of traced memory blocks as a 2-tuple */
+extern PyObject* _PyTraceMalloc_GetTracedMemory(void);
+
+/* Set the peak size of traced memory blocks to the current size */
+extern void _PyTraceMalloc_ResetPeak(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_tstate.h b/Include/internal/pycore_tstate.h
new file mode 100644
index 00000000000000..17f3e865641773
--- /dev/null
+++ b/Include/internal/pycore_tstate.h
@@ -0,0 +1,26 @@
+#ifndef Py_INTERNAL_TSTATE_H
+#define Py_INTERNAL_TSTATE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+
+// Every PyThreadState is actually allocated as a _PyThreadStateImpl. The
+// PyThreadState fields are exposed as part of the C API, although most fields
+// are intended to be private. The _PyThreadStateImpl fields not exposed.
+typedef struct _PyThreadStateImpl {
+    // semi-public fields are in PyThreadState.
+    PyThreadState base;
+
+    // TODO: add private fields here
+} _PyThreadStateImpl;
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_TSTATE_H */
diff --git a/Include/internal/pycore_tuple.h b/Include/internal/pycore_tuple.h
index 335edad89792c3..4fa7a12206bcb2 100644
--- a/Include/internal/pycore_tuple.h
+++ b/Include/internal/pycore_tuple.h
@@ -8,8 +8,8 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "tupleobject.h"   /* _PyTuple_CAST() */
-
+extern void _PyTuple_MaybeUntrack(PyObject *);
+extern void _PyTuple_DebugMallocStats(FILE *out);
 
 /* runtime lifecycle */
 
diff --git a/Include/internal/pycore_typeobject.h b/Include/internal/pycore_typeobject.h
index c7d00002fbc63c..f983de56049631 100644
--- a/Include/internal/pycore_typeobject.h
+++ b/Include/internal/pycore_typeobject.h
@@ -4,12 +4,12 @@
 extern "C" {
 #endif
 
-#include "pycore_moduleobject.h"
-
 #ifndef Py_BUILD_CORE
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "pycore_moduleobject.h"  // PyModuleObject
+
 
 /* state */
 
@@ -46,11 +46,9 @@ typedef struct {
     PyTypeObject *type;
     int readying;
     int ready;
-    // XXX tp_dict, tp_bases, and tp_mro can probably be statically
-    // allocated, instead of dynamically and stored on the interpreter.
+    // XXX tp_dict can probably be statically allocated,
+    // instead of dynamically and stored on the interpreter.
     PyObject *tp_dict;
-    PyObject *tp_bases;
-    PyObject *tp_mro;
     PyObject *tp_subclasses;
     /* We never clean up weakrefs for static builtin types since
        they will effectively never get triggered.  However, there
@@ -116,7 +114,10 @@ extern static_builtin_state * _PyStaticType_GetState(PyInterpreterState *, PyTyp
 extern void _PyStaticType_ClearWeakRefs(PyInterpreterState *, PyTypeObject *type);
 extern void _PyStaticType_Dealloc(PyInterpreterState *, PyTypeObject *);
 
+// Export for 'math' shared extension, used via _PyType_IsReady() static inline
+// function
 PyAPI_FUNC(PyObject *) _PyType_GetDict(PyTypeObject *);
+
 extern PyObject * _PyType_GetBases(PyTypeObject *type);
 extern PyObject * _PyType_GetMRO(PyTypeObject *type);
 extern PyObject* _PyType_GetSubclasses(PyTypeObject *);
@@ -130,18 +131,24 @@ _PyType_IsReady(PyTypeObject *type)
     return _PyType_GetDict(type) != NULL;
 }
 
-PyObject *
-_Py_type_getattro_impl(PyTypeObject *type, PyObject *name, int *suppress_missing_attribute);
-PyObject *
-_Py_type_getattro(PyTypeObject *type, PyObject *name);
+extern PyObject* _Py_type_getattro_impl(PyTypeObject *type, PyObject *name,
+                                        int *suppress_missing_attribute);
+extern PyObject* _Py_type_getattro(PyTypeObject *type, PyObject *name);
+
+extern PyObject* _Py_BaseObject_RichCompare(PyObject* self, PyObject* other, int op);
+
+extern PyObject* _Py_slot_tp_getattro(PyObject *self, PyObject *name);
+extern PyObject* _Py_slot_tp_getattr_hook(PyObject *self, PyObject *name);
+
+extern PyTypeObject _PyBufferWrapper_Type;
+
+extern PyObject* _PySuper_Lookup(PyTypeObject *su_type, PyObject *su_obj,
+                                 PyObject *name, int *meth_found);
 
-PyObject *_Py_slot_tp_getattro(PyObject *self, PyObject *name);
-PyObject *_Py_slot_tp_getattr_hook(PyObject *self, PyObject *name);
 
-PyAPI_DATA(PyTypeObject) _PyBufferWrapper_Type;
+// This is exported for the _testinternalcapi module.
+PyAPI_FUNC(PyObject *) _PyType_GetModuleName(PyTypeObject *);
 
-PyObject *
-_PySuper_Lookup(PyTypeObject *su_type, PyObject *su_obj, PyObject *name, int *meth_found);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_typevarobject.h b/Include/internal/pycore_typevarobject.h
new file mode 100644
index 00000000000000..c9fa97d6820757
--- /dev/null
+++ b/Include/internal/pycore_typevarobject.h
@@ -0,0 +1,24 @@
+#ifndef Py_INTERNAL_TYPEVAROBJECT_H
+#define Py_INTERNAL_TYPEVAROBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+extern PyObject *_Py_make_typevar(PyObject *, PyObject *, PyObject *);
+extern PyObject *_Py_make_paramspec(PyThreadState *, PyObject *);
+extern PyObject *_Py_make_typevartuple(PyThreadState *, PyObject *);
+extern PyObject *_Py_make_typealias(PyThreadState *, PyObject *);
+extern PyObject *_Py_subscript_generic(PyThreadState *, PyObject *);
+extern int _Py_initialize_generic(PyInterpreterState *);
+extern void _Py_clear_generic_types(PyInterpreterState *);
+
+extern PyTypeObject _PyTypeAlias_Type;
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_TYPEVAROBJECT_H */
diff --git a/Include/internal/pycore_ucnhash.h b/Include/internal/pycore_ucnhash.h
index 187dd68e7347ff..1561dfbb3150d3 100644
--- a/Include/internal/pycore_ucnhash.h
+++ b/Include/internal/pycore_ucnhash.h
@@ -28,6 +28,8 @@ typedef struct {
 
 } _PyUnicode_Name_CAPI;
 
+extern _PyUnicode_Name_CAPI* _PyUnicode_GetNameCAPI(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_unicodeobject.h b/Include/internal/pycore_unicodeobject.h
index 1bb0f366e78163..7ee540154b23d8 100644
--- a/Include/internal/pycore_unicodeobject.h
+++ b/Include/internal/pycore_unicodeobject.h
@@ -8,13 +8,264 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "pycore_lock.h"          // PyMutex
 #include "pycore_fileutils.h"     // _Py_error_handler
+#include "pycore_identifier.h"    // _Py_Identifier
 #include "pycore_ucnhash.h"       // _PyUnicode_Name_CAPI
 
-void _PyUnicode_ExactDealloc(PyObject *op);
-Py_ssize_t _PyUnicode_InternedSize(void);
+/* --- Characters Type APIs ----------------------------------------------- */
 
-/* runtime lifecycle */
+extern int _PyUnicode_IsXidStart(Py_UCS4 ch);
+extern int _PyUnicode_IsXidContinue(Py_UCS4 ch);
+extern int _PyUnicode_ToLowerFull(Py_UCS4 ch, Py_UCS4 *res);
+extern int _PyUnicode_ToTitleFull(Py_UCS4 ch, Py_UCS4 *res);
+extern int _PyUnicode_ToUpperFull(Py_UCS4 ch, Py_UCS4 *res);
+extern int _PyUnicode_ToFoldedFull(Py_UCS4 ch, Py_UCS4 *res);
+extern int _PyUnicode_IsCaseIgnorable(Py_UCS4 ch);
+extern int _PyUnicode_IsCased(Py_UCS4 ch);
+
+/* --- Unicode API -------------------------------------------------------- */
+
+// Export for '_json' shared extension
+PyAPI_FUNC(int) _PyUnicode_CheckConsistency(
+    PyObject *op,
+    int check_content);
+
+extern void _PyUnicode_ExactDealloc(PyObject *op);
+extern Py_ssize_t _PyUnicode_InternedSize(void);
+
+// Get a copy of a Unicode string.
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(PyObject*) _PyUnicode_Copy(
+    PyObject *unicode);
+
+/* Unsafe version of PyUnicode_Fill(): don't check arguments and so may crash
+   if parameters are invalid (e.g. if length is longer than the string). */
+extern void _PyUnicode_FastFill(
+    PyObject *unicode,
+    Py_ssize_t start,
+    Py_ssize_t length,
+    Py_UCS4 fill_char
+    );
+
+/* Unsafe version of PyUnicode_CopyCharacters(): don't check arguments and so
+   may crash if parameters are invalid (e.g. if the output string
+   is too short). */
+extern void _PyUnicode_FastCopyCharacters(
+    PyObject *to,
+    Py_ssize_t to_start,
+    PyObject *from,
+    Py_ssize_t from_start,
+    Py_ssize_t how_many
+    );
+
+/* Create a new string from a buffer of ASCII characters.
+   WARNING: Don't check if the string contains any non-ASCII character. */
+extern PyObject* _PyUnicode_FromASCII(
+    const char *buffer,
+    Py_ssize_t size);
+
+/* Compute the maximum character of the substring unicode[start:end].
+   Return 127 for an empty string. */
+extern Py_UCS4 _PyUnicode_FindMaxChar (
+    PyObject *unicode,
+    Py_ssize_t start,
+    Py_ssize_t end);
+
+/* --- _PyUnicodeWriter API ----------------------------------------------- */
+
+/* Format the object based on the format_spec, as defined in PEP 3101
+   (Advanced String Formatting). */
+extern int _PyUnicode_FormatAdvancedWriter(
+    _PyUnicodeWriter *writer,
+    PyObject *obj,
+    PyObject *format_spec,
+    Py_ssize_t start,
+    Py_ssize_t end);
+
+/* --- UTF-7 Codecs ------------------------------------------------------- */
+
+extern PyObject* _PyUnicode_EncodeUTF7(
+    PyObject *unicode,          /* Unicode object */
+    int base64SetO,             /* Encode RFC2152 Set O characters in base64 */
+    int base64WhiteSpace,       /* Encode whitespace (sp, ht, nl, cr) in base64 */
+    const char *errors);        /* error handling */
+
+/* --- UTF-8 Codecs ------------------------------------------------------- */
+
+// Export for '_tkinter' shared extension.
+PyAPI_FUNC(PyObject*) _PyUnicode_AsUTF8String(
+    PyObject *unicode,
+    const char *errors);
+
+/* --- UTF-32 Codecs ------------------------------------------------------ */
+
+// Export for '_tkinter' shared extension
+PyAPI_FUNC(PyObject*) _PyUnicode_EncodeUTF32(
+    PyObject *object,           /* Unicode object */
+    const char *errors,         /* error handling */
+    int byteorder);             /* byteorder to use 0=BOM+native;-1=LE,1=BE */
+
+/* --- UTF-16 Codecs ------------------------------------------------------ */
+
+// Returns a Python string object holding the UTF-16 encoded value of
+// the Unicode data.
+//
+// If byteorder is not 0, output is written according to the following
+// byte order:
+//
+// byteorder == -1: little endian
+// byteorder == 0:  native byte order (writes a BOM mark)
+// byteorder == 1:  big endian
+//
+// If byteorder is 0, the output string will always start with the
+// Unicode BOM mark (U+FEFF). In the other two modes, no BOM mark is
+// prepended.
+//
+// Export for '_tkinter' shared extension
+PyAPI_FUNC(PyObject*) _PyUnicode_EncodeUTF16(
+    PyObject* unicode,          /* Unicode object */
+    const char *errors,         /* error handling */
+    int byteorder);             /* byteorder to use 0=BOM+native;-1=LE,1=BE */
+
+/* --- Unicode-Escape Codecs ---------------------------------------------- */
+
+/* Variant of PyUnicode_DecodeUnicodeEscape that supports partial decoding. */
+extern PyObject* _PyUnicode_DecodeUnicodeEscapeStateful(
+    const char *string,     /* Unicode-Escape encoded string */
+    Py_ssize_t length,      /* size of string */
+    const char *errors,     /* error handling */
+    Py_ssize_t *consumed);  /* bytes consumed */
+
+// Helper for PyUnicode_DecodeUnicodeEscape that detects invalid escape
+// chars.
+// Export for test_peg_generator.
+PyAPI_FUNC(PyObject*) _PyUnicode_DecodeUnicodeEscapeInternal(
+    const char *string,     /* Unicode-Escape encoded string */
+    Py_ssize_t length,      /* size of string */
+    const char *errors,     /* error handling */
+    Py_ssize_t *consumed,   /* bytes consumed */
+    const char **first_invalid_escape); /* on return, points to first
+                                           invalid escaped char in
+                                           string. */
+
+/* --- Raw-Unicode-Escape Codecs ---------------------------------------------- */
+
+/* Variant of PyUnicode_DecodeRawUnicodeEscape that supports partial decoding. */
+extern PyObject* _PyUnicode_DecodeRawUnicodeEscapeStateful(
+    const char *string,     /* Unicode-Escape encoded string */
+    Py_ssize_t length,      /* size of string */
+    const char *errors,     /* error handling */
+    Py_ssize_t *consumed);  /* bytes consumed */
+
+/* --- Latin-1 Codecs ----------------------------------------------------- */
+
+extern PyObject* _PyUnicode_AsLatin1String(
+    PyObject* unicode,
+    const char* errors);
+
+/* --- ASCII Codecs ------------------------------------------------------- */
+
+extern PyObject* _PyUnicode_AsASCIIString(
+    PyObject* unicode,
+    const char* errors);
+
+/* --- Character Map Codecs ----------------------------------------------- */
+
+/* Translate an Unicode object by applying a character mapping table to
+   it and return the resulting Unicode object.
+
+   The mapping table must map Unicode ordinal integers to Unicode strings,
+   Unicode ordinal integers or None (causing deletion of the character).
+
+   Mapping tables may be dictionaries or sequences. Unmapped character
+   ordinals (ones which cause a LookupError) are left untouched and
+   are copied as-is.
+*/
+extern PyObject* _PyUnicode_EncodeCharmap(
+    PyObject *unicode,          /* Unicode object */
+    PyObject *mapping,          /* encoding mapping */
+    const char *errors);        /* error handling */
+
+/* --- Decimal Encoder ---------------------------------------------------- */
+
+// Coverts a Unicode object holding a decimal value to an ASCII string
+// for using in int, float and complex parsers.
+// Transforms code points that have decimal digit property to the
+// corresponding ASCII digit code points.  Transforms spaces to ASCII.
+// Transforms code points starting from the first non-ASCII code point that
+// is neither a decimal digit nor a space to the end into '?'.
+//
+// Export for '_testinternalcapi' shared extension.
+PyAPI_FUNC(PyObject*) _PyUnicode_TransformDecimalAndSpaceToASCII(
+    PyObject *unicode);         /* Unicode object */
+
+/* --- Methods & Slots ---------------------------------------------------- */
+
+extern PyObject* _PyUnicode_JoinArray(
+    PyObject *separator,
+    PyObject *const *items,
+    Py_ssize_t seqlen
+    );
+
+/* Test whether a unicode is equal to ASCII identifier.  Return 1 if true,
+   0 otherwise.  The right argument must be ASCII identifier.
+   Any error occurs inside will be cleared before return. */
+extern int _PyUnicode_EqualToASCIIId(
+    PyObject *left,             /* Left string */
+    _Py_Identifier *right       /* Right identifier */
+    );
+
+// Test whether a unicode is equal to ASCII string.  Return 1 if true,
+// 0 otherwise.  The right argument must be ASCII-encoded string.
+// Any error occurs inside will be cleared before return.
+// Export for '_ctypes' shared extension
+PyAPI_FUNC(int) _PyUnicode_EqualToASCIIString(
+    PyObject *left,
+    const char *right           /* ASCII-encoded string */
+    );
+
+/* Externally visible for str.strip(unicode) */
+extern PyObject* _PyUnicode_XStrip(
+    PyObject *self,
+    int striptype,
+    PyObject *sepobj
+    );
+
+
+/* Using explicit passed-in values, insert the thousands grouping
+   into the string pointed to by buffer.  For the argument descriptions,
+   see Objects/stringlib/localeutil.h */
+extern Py_ssize_t _PyUnicode_InsertThousandsGrouping(
+    _PyUnicodeWriter *writer,
+    Py_ssize_t n_buffer,
+    PyObject *digits,
+    Py_ssize_t d_pos,
+    Py_ssize_t n_digits,
+    Py_ssize_t min_width,
+    const char *grouping,
+    PyObject *thousands_sep,
+    Py_UCS4 *maxchar);
+
+/* --- Misc functions ----------------------------------------------------- */
+
+extern PyObject* _PyUnicode_FormatLong(PyObject *, int, int, int);
+
+/* Fast equality check when the inputs are known to be exact unicode types
+   and where the hash values are equal (i.e. a very probable match) */
+extern int _PyUnicode_EQ(PyObject *, PyObject *);
+
+// Equality check.
+// Export for '_pickle' shared extension.
+PyAPI_FUNC(int) _PyUnicode_Equal(PyObject *, PyObject *);
+
+extern int _PyUnicode_WideCharString_Converter(PyObject *, void *);
+extern int _PyUnicode_WideCharString_Opt_Converter(PyObject *, void *);
+
+// Export for test_peg_generator
+PyAPI_FUNC(Py_ssize_t) _PyUnicode_ScanIdentifier(PyObject *);
+
+/* --- Runtime lifecycle -------------------------------------------------- */
 
 extern void _PyUnicode_InitState(PyInterpreterState *);
 extern PyStatus _PyUnicode_InitGlobalObjects(PyInterpreterState *);
@@ -24,10 +275,10 @@ extern void _PyUnicode_FiniTypes(PyInterpreterState *);
 
 extern PyTypeObject _PyUnicodeASCIIIter_Type;
 
-/* other API */
+/* --- Other API ---------------------------------------------------------- */
 
 struct _Py_unicode_runtime_ids {
-    PyThread_type_lock lock;
+    PyMutex mutex;
     // next_index value must be preserved when Py_Initialize()/Py_Finalize()
     // is called multiple times: see _PyUnicode_FromId() implementation.
     Py_ssize_t next_index;
@@ -63,6 +314,10 @@ struct _Py_unicode_state {
 extern void _PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p);
 extern void _PyUnicode_ClearInterned(PyInterpreterState *interp);
 
+// Like PyUnicode_AsUTF8(), but check for embedded null characters.
+// Export for '_sqlite3' shared extension.
+PyAPI_FUNC(const char *) _PyUnicode_AsUTF8NoNUL(PyObject *);
+
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_unicodeobject_generated.h b/Include/internal/pycore_unicodeobject_generated.h
index 8e086edbdf8193..be9baa3eebecfc 100644
--- a/Include/internal/pycore_unicodeobject_generated.h
+++ b/Include/internal/pycore_unicodeobject_generated.h
@@ -123,6 +123,12 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(__classcell__);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(__classdict__);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(__classdictcell__);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(__complex__);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -309,6 +315,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(__main__);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(__match_args__);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(__matmul__);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -489,6 +498,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(__trunc__);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(__type_params__);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(__typing_is_unpacked_typevartuple__);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -639,6 +651,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(access);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(aclose);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(add);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -669,9 +684,15 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(as_integer_ratio);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(asend);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(ast);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(athrow);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(attribute);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -702,6 +723,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(block);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(bound);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(buffer);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -762,6 +786,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(call_soon);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(callback);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(cancel);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -867,6 +894,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(context);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(contravariant);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(cookie);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -882,6 +912,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(count);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(covariant);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(cwd);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -966,9 +999,6 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(dst_dir_fd);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(duration);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(e);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1014,24 +1044,27 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(eventmask);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(exc_type);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(exc_value);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(excepthook);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(exception);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(existing_file_name);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(exp);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(extend);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(extra_tokens);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(f);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(facility);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1101,9 +1134,6 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(format);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(frequency);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(from_param);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1125,6 +1155,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(future);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(g);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(generation);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1164,6 +1197,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(groups);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(h);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(handle);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1188,6 +1224,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(ident);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(identity_hint);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(ignore);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1209,6 +1248,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(inf);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(infer_variance);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(inheritable);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1245,6 +1287,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(intersection);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(interval);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(is_running);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1476,6 +1521,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(ndigits);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(new_file_name);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(new_limit);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1488,6 +1536,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(next);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(nlocals);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(node_depth);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1557,6 +1608,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(order);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(origin);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(out_fd);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1632,6 +1686,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(progress_handler);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(progress_routine);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(proto);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1809,9 +1866,6 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(sort);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(sound);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(source);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1848,6 +1902,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(step);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(steps);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(store_name);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1932,9 +1989,6 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(trace_callback);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(traceback);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(trailers);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
@@ -1956,6 +2010,9 @@ _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     string = &_Py_ID(type);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
+    string = &_Py_ID(type_params);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    _PyUnicode_InternInPlace(interp, &string);
     string = &_Py_ID(tz);
     assert(_PyUnicode_CheckConsistency(string, 1));
     _PyUnicode_InternInPlace(interp, &string);
diff --git a/Include/internal/pycore_uops.h b/Include/internal/pycore_uops.h
new file mode 100644
index 00000000000000..ea8f90bf8c1d8f
--- /dev/null
+++ b/Include/internal/pycore_uops.h
@@ -0,0 +1,35 @@
+#ifndef Py_INTERNAL_UOPS_H
+#define Py_INTERNAL_UOPS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_frame.h"         // _PyInterpreterFrame
+
+#define _Py_UOP_MAX_TRACE_LENGTH 512
+
+typedef struct {
+    uint16_t opcode;
+    uint16_t oparg;
+    uint32_t target;
+    uint64_t operand;  // A cache entry
+} _PyUOpInstruction;
+
+typedef struct {
+    _PyExecutorObject base;
+    _PyUOpInstruction trace[1];
+} _PyUOpExecutorObject;
+
+_PyInterpreterFrame *_PyUOpExecute(
+    _PyExecutorObject *executor,
+    _PyInterpreterFrame *frame,
+    PyObject **stack_pointer);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_UOPS_H */
diff --git a/Include/internal/pycore_warnings.h b/Include/internal/pycore_warnings.h
index efb4f1cd7eac80..9785d7cc467de2 100644
--- a/Include/internal/pycore_warnings.h
+++ b/Include/internal/pycore_warnings.h
@@ -19,9 +19,10 @@ struct _warnings_runtime_state {
 
 extern int _PyWarnings_InitState(PyInterpreterState *interp);
 
-PyAPI_FUNC(PyObject*) _PyWarnings_Init(void);
+extern PyObject* _PyWarnings_Init(void);
 
 extern void _PyErr_WarnUnawaitedCoroutine(PyObject *coro);
+extern void _PyErr_WarnUnawaitedAgenMethod(PyAsyncGenObject *agen, PyObject *method);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_weakref.h b/Include/internal/pycore_weakref.h
new file mode 100644
index 00000000000000..eacbe14c903289
--- /dev/null
+++ b/Include/internal/pycore_weakref.h
@@ -0,0 +1,64 @@
+#ifndef Py_INTERNAL_WEAKREF_H
+#define Py_INTERNAL_WEAKREF_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "pycore_critical_section.h" // Py_BEGIN_CRITICAL_SECTION()
+
+static inline PyObject* _PyWeakref_GET_REF(PyObject *ref_obj) {
+    assert(PyWeakref_Check(ref_obj));
+    PyWeakReference *ref = _Py_CAST(PyWeakReference*, ref_obj);
+    PyObject *obj = ref->wr_object;
+
+    if (obj == Py_None) {
+        // clear_weakref() was called
+        return NULL;
+    }
+
+    // Explanation for the Py_REFCNT() check: when a weakref's target is part
+    // of a long chain of deallocations which triggers the trashcan mechanism,
+    // clearing the weakrefs can be delayed long after the target's refcount
+    // has dropped to zero.  In the meantime, code accessing the weakref will
+    // be able to "see" the target object even though it is supposed to be
+    // unreachable.  See issue gh-60806.
+    Py_ssize_t refcnt = Py_REFCNT(obj);
+    if (refcnt == 0) {
+        return NULL;
+    }
+
+    assert(refcnt > 0);
+    return Py_NewRef(obj);
+}
+
+static inline int _PyWeakref_IS_DEAD(PyObject *ref_obj) {
+    assert(PyWeakref_Check(ref_obj));
+    int is_dead;
+    Py_BEGIN_CRITICAL_SECTION(ref_obj);
+    PyWeakReference *ref = _Py_CAST(PyWeakReference*, ref_obj);
+    PyObject *obj = ref->wr_object;
+    if (obj == Py_None) {
+        // clear_weakref() was called
+        is_dead = 1;
+    }
+    else {
+        // See _PyWeakref_GET_REF() for the rationale of this test
+        is_dead = (Py_REFCNT(obj) == 0);
+    }
+    Py_END_CRITICAL_SECTION();
+    return is_dead;
+}
+
+extern Py_ssize_t _PyWeakref_GetWeakrefCount(PyWeakReference *head);
+
+extern void _PyWeakref_ClearRef(PyWeakReference *self);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_WEAKREF_H */
+
diff --git a/Include/interpreteridobject.h b/Include/interpreteridobject.h
new file mode 100644
index 00000000000000..8432632f339e92
--- /dev/null
+++ b/Include/interpreteridobject.h
@@ -0,0 +1,17 @@
+#ifndef Py_INTERPRETERIDOBJECT_H
+#define Py_INTERPRETERIDOBJECT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_INTERPRETERIDOBJECT_H
+#  include "cpython/interpreteridobject.h"
+#  undef Py_CPYTHON_INTERPRETERIDOBJECT_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERPRETERIDOBJECT_H */
diff --git a/Include/intrcheck.h b/Include/intrcheck.h
index b8cc65601683cb..1d1feee83de483 100644
--- a/Include/intrcheck.h
+++ b/Include/intrcheck.h
@@ -5,6 +5,7 @@ extern "C" {
 #endif
 
 PyAPI_FUNC(int) PyOS_InterruptOccurred(void);
+
 #ifdef HAVE_FORK
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03070000
 PyAPI_FUNC(void) PyOS_BeforeFork(void);
@@ -12,18 +13,10 @@ PyAPI_FUNC(void) PyOS_AfterFork_Parent(void);
 PyAPI_FUNC(void) PyOS_AfterFork_Child(void);
 #endif
 #endif
+
 /* Deprecated, please use PyOS_AfterFork_Child() instead */
 Py_DEPRECATED(3.7) PyAPI_FUNC(void) PyOS_AfterFork(void);
 
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(int) _PyOS_IsMainThread(void);
-
-#ifdef MS_WINDOWS
-/* windows.h is not included by Python.h so use void* instead of HANDLE */
-PyAPI_FUNC(void*) _PyOS_SigintEvent(void);
-#endif
-#endif /* !Py_LIMITED_API */
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/iterobject.h b/Include/iterobject.h
index fff30f7176fdeb..e69d09719bb4d1 100644
--- a/Include/iterobject.h
+++ b/Include/iterobject.h
@@ -7,9 +7,6 @@ extern "C" {
 
 PyAPI_DATA(PyTypeObject) PySeqIter_Type;
 PyAPI_DATA(PyTypeObject) PyCallIter_Type;
-#ifdef Py_BUILD_CORE
-extern PyTypeObject _PyAnextAwaitable_Type;
-#endif
 
 #define PySeqIter_Check(op) Py_IS_TYPE((op), &PySeqIter_Type)
 
diff --git a/Include/longobject.h b/Include/longobject.h
index e559e238ae5a35..51005efff636fa 100644
--- a/Include/longobject.h
+++ b/Include/longobject.h
@@ -7,7 +7,7 @@ extern "C" {
 
 /* Long (arbitrary precision) integer object interface */
 
-PyAPI_DATA(PyTypeObject) PyLong_Type;
+// PyLong_Type is declared by object.h
 
 #define PyLong_Check(op) \
         PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_LONG_SUBCLASS)
@@ -18,12 +18,18 @@ PyAPI_FUNC(PyObject *) PyLong_FromUnsignedLong(unsigned long);
 PyAPI_FUNC(PyObject *) PyLong_FromSize_t(size_t);
 PyAPI_FUNC(PyObject *) PyLong_FromSsize_t(Py_ssize_t);
 PyAPI_FUNC(PyObject *) PyLong_FromDouble(double);
+
 PyAPI_FUNC(long) PyLong_AsLong(PyObject *);
 PyAPI_FUNC(long) PyLong_AsLongAndOverflow(PyObject *, int *);
 PyAPI_FUNC(Py_ssize_t) PyLong_AsSsize_t(PyObject *);
 PyAPI_FUNC(size_t) PyLong_AsSize_t(PyObject *);
 PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLong(PyObject *);
 PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLongMask(PyObject *);
+
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+PyAPI_FUNC(int) PyLong_AsInt(PyObject *);
+#endif
+
 PyAPI_FUNC(PyObject *) PyLong_GetInfo(void);
 
 /* It may be useful in the future. I've added it in the PyInt -> PyLong
diff --git a/Include/methodobject.h b/Include/methodobject.h
index 72af5ad933df7f..2381e8482b82a8 100644
--- a/Include/methodobject.h
+++ b/Include/methodobject.h
@@ -49,8 +49,6 @@ PyAPI_FUNC(PyCFunction) PyCFunction_GetFunction(PyObject *);
 PyAPI_FUNC(PyObject *) PyCFunction_GetSelf(PyObject *);
 PyAPI_FUNC(int) PyCFunction_GetFlags(PyObject *);
 
-Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyCFunction_Call(PyObject *, PyObject *, PyObject *);
-
 struct PyMethodDef {
     const char  *ml_name;   /* The name of the built-in function/method */
     PyCFunction ml_meth;    /* The C function that implements it */
diff --git a/Include/modsupport.h b/Include/modsupport.h
index 4e369bd56b4d20..ea4c0fce9f4562 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -1,3 +1,4 @@
+// Module support interface
 
 #ifndef Py_MODSUPPORT_H
 #define Py_MODSUPPORT_H
@@ -5,47 +6,34 @@
 extern "C" {
 #endif
 
-/* Module support interface */
-
-#include <stdarg.h>               // va_list
-
-/* If PY_SSIZE_T_CLEAN is defined, each functions treats #-specifier
-   to mean Py_ssize_t */
-#ifdef PY_SSIZE_T_CLEAN
-#define PyArg_Parse                     _PyArg_Parse_SizeT
-#define PyArg_ParseTuple                _PyArg_ParseTuple_SizeT
-#define PyArg_ParseTupleAndKeywords     _PyArg_ParseTupleAndKeywords_SizeT
-#define PyArg_VaParse                   _PyArg_VaParse_SizeT
-#define PyArg_VaParseTupleAndKeywords   _PyArg_VaParseTupleAndKeywords_SizeT
-#define Py_BuildValue                   _Py_BuildValue_SizeT
-#define Py_VaBuildValue                 _Py_VaBuildValue_SizeT
-#endif
-
-/* Due to a glitch in 3.2, the _SizeT versions weren't exported from the DLL. */
-#if !defined(PY_SSIZE_T_CLEAN) || !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03030000
 PyAPI_FUNC(int) PyArg_Parse(PyObject *, const char *, ...);
 PyAPI_FUNC(int) PyArg_ParseTuple(PyObject *, const char *, ...);
 PyAPI_FUNC(int) PyArg_ParseTupleAndKeywords(PyObject *, PyObject *,
-                                                  const char *, char **, ...);
+                                            const char *, PY_CXX_CONST char * const *, ...);
 PyAPI_FUNC(int) PyArg_VaParse(PyObject *, const char *, va_list);
 PyAPI_FUNC(int) PyArg_VaParseTupleAndKeywords(PyObject *, PyObject *,
-                                                  const char *, char **, va_list);
-#endif
+                                              const char *, PY_CXX_CONST char * const *, va_list);
+
 PyAPI_FUNC(int) PyArg_ValidateKeywordArguments(PyObject *);
 PyAPI_FUNC(int) PyArg_UnpackTuple(PyObject *, const char *, Py_ssize_t, Py_ssize_t, ...);
 PyAPI_FUNC(PyObject *) Py_BuildValue(const char *, ...);
-PyAPI_FUNC(PyObject *) _Py_BuildValue_SizeT(const char *, ...);
-
-
 PyAPI_FUNC(PyObject *) Py_VaBuildValue(const char *, va_list);
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030a0000
 // Add an attribute with name 'name' and value 'obj' to the module 'mod.
-// On success, return 0 on success.
+// On success, return 0.
 // On error, raise an exception and return -1.
 PyAPI_FUNC(int) PyModule_AddObjectRef(PyObject *mod, const char *name, PyObject *value);
+#endif   /* Py_LIMITED_API */
+
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+// Similar to PyModule_AddObjectRef() but steal a reference to 'value'.
+PyAPI_FUNC(int) PyModule_Add(PyObject *mod, const char *name, PyObject *value);
+#endif   /* Py_LIMITED_API */
 
-// Similar to PyModule_AddObjectRef() but steal a reference to 'obj'
-// (Py_DECREF(obj)) on success (if it returns 0).
+// Similar to PyModule_AddObjectRef() and PyModule_Add() but steal
+// a reference to 'value' on success and only on success.
+// Errorprone. Should not be used in new code.
 PyAPI_FUNC(int) PyModule_AddObject(PyObject *mod, const char *, PyObject *value);
 
 PyAPI_FUNC(int) PyModule_AddIntConstant(PyObject *, const char *, long);
@@ -120,14 +108,6 @@ PyAPI_FUNC(int) PyModule_ExecDef(PyObject *module, PyModuleDef *def);
 #define PYTHON_ABI_VERSION 3
 #define PYTHON_ABI_STRING "3"
 
-#ifdef Py_TRACE_REFS
- /* When we are tracing reference counts, rename module creation functions so
-    modules compiled with incompatible settings will generate a
-    link-time error. */
- #define PyModule_Create2 PyModule_Create2TraceRefs
- #define PyModule_FromDefAndSpec2 PyModule_FromDefAndSpec2TraceRefs
-#endif
-
 PyAPI_FUNC(PyObject *) PyModule_Create2(PyModuleDef*, int apiver);
 
 #ifdef Py_LIMITED_API
@@ -154,12 +134,6 @@ PyAPI_FUNC(PyObject *) PyModule_FromDefAndSpec2(PyModuleDef *def,
 
 #endif /* New in 3.5 */
 
-#ifndef Py_LIMITED_API
-#  define Py_CPYTHON_MODSUPPORT_H
-#  include "cpython/modsupport.h"
-#  undef Py_CPYTHON_MODSUPPORT_H
-#endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/moduleobject.h b/Include/moduleobject.h
index b8bdfe29d80406..42b87cc4e91012 100644
--- a/Include/moduleobject.h
+++ b/Include/moduleobject.h
@@ -27,11 +27,6 @@ PyAPI_FUNC(PyObject *) PyModule_GetNameObject(PyObject *);
 PyAPI_FUNC(const char *) PyModule_GetName(PyObject *);
 Py_DEPRECATED(3.2) PyAPI_FUNC(const char *) PyModule_GetFilename(PyObject *);
 PyAPI_FUNC(PyObject *) PyModule_GetFilenameObject(PyObject *);
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(void) _PyModule_Clear(PyObject *);
-PyAPI_FUNC(void) _PyModule_ClearDict(PyObject *);
-PyAPI_FUNC(int) _PyModuleSpec_IsInitializing(PyObject *);
-#endif
 PyAPI_FUNC(PyModuleDef*) PyModule_GetDef(PyObject*);
 PyAPI_FUNC(void*) PyModule_GetState(PyObject*);
 
@@ -78,19 +73,23 @@ struct PyModuleDef_Slot {
 
 #define Py_mod_create 1
 #define Py_mod_exec 2
-#define Py_mod_multiple_interpreters 3
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030c0000
+#  define Py_mod_multiple_interpreters 3
+#endif
 
 #ifndef Py_LIMITED_API
 #define _Py_mod_LAST_SLOT 3
 #endif
 
-/* for Py_mod_multiple_interpreters: */
-#define Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED ((void *)0)
-#define Py_MOD_MULTIPLE_INTERPRETERS_SUPPORTED ((void *)1)
-#define Py_MOD_PER_INTERPRETER_GIL_SUPPORTED ((void *)2)
-
 #endif /* New in 3.5 */
 
+/* for Py_mod_multiple_interpreters: */
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030c0000
+#  define Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED ((void *)0)
+#  define Py_MOD_MULTIPLE_INTERPRETERS_SUPPORTED ((void *)1)
+#  define Py_MOD_PER_INTERPRETER_GIL_SUPPORTED ((void *)2)
+#endif
+
 struct PyModuleDef {
   PyModuleDef_Base m_base;
   const char* m_name;
@@ -103,12 +102,6 @@ struct PyModuleDef {
   freefunc m_free;
 };
 
-
-// Internal C API
-#ifdef Py_BUILD_CORE
-extern int _PyModule_IsExtension(PyObject *obj);
-#endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/object.h b/Include/object.h
index 81aeb2d8bd5a69..bd576b0bd43211 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -51,30 +51,11 @@ A standard interface exists for objects that contain an array of items
 whose size is determined when the object is allocated.
 */
 
-#include "pystats.h"
-
 /* Py_DEBUG implies Py_REF_DEBUG. */
 #if defined(Py_DEBUG) && !defined(Py_REF_DEBUG)
 #  define Py_REF_DEBUG
 #endif
 
-#if defined(Py_LIMITED_API) && defined(Py_TRACE_REFS)
-#  error Py_LIMITED_API is incompatible with Py_TRACE_REFS
-#endif
-
-#ifdef Py_TRACE_REFS
-/* Define pointers to support a doubly-linked list of all live heap objects. */
-#define _PyObject_HEAD_EXTRA            \
-    PyObject *_ob_next;           \
-    PyObject *_ob_prev;
-
-#define _PyObject_EXTRA_INIT _Py_NULL, _Py_NULL,
-
-#else
-#  define _PyObject_HEAD_EXTRA
-#  define _PyObject_EXTRA_INIT
-#endif
-
 /* PyObject_HEAD defines the initial segment of every PyObject. */
 #define PyObject_HEAD                   PyObject ob_base;
 
@@ -107,7 +88,7 @@ having all the lower 32 bits set, which will avoid the reference count to go
 beyond the refcount limit. Immortality checks for reference count decreases will
 be done by checking the bit sign flag in the lower 32 bits.
 */
-#define _Py_IMMORTAL_REFCNT UINT_MAX
+#define _Py_IMMORTAL_REFCNT _Py_CAST(Py_ssize_t, UINT_MAX)
 
 #else
 /*
@@ -122,22 +103,40 @@ immortality, but the execution would still be correct.
 Reference count increases and decreases will first go through an immortality
 check by comparing the reference count field to the immortality reference count.
 */
-#define _Py_IMMORTAL_REFCNT (UINT_MAX >> 2)
+#define _Py_IMMORTAL_REFCNT _Py_CAST(Py_ssize_t, UINT_MAX >> 2)
+#endif
+
+// Py_GIL_DISABLED builds indicate immortal objects using `ob_ref_local`, which is
+// always 32-bits.
+#ifdef Py_GIL_DISABLED
+#define _Py_IMMORTAL_REFCNT_LOCAL UINT32_MAX
 #endif
 
+// Kept for backward compatibility. It was needed by Py_TRACE_REFS build.
+#define _PyObject_EXTRA_INIT
+
 // Make all internal uses of PyObject_HEAD_INIT immortal while preserving the
 // C-API expectation that the refcnt will be set to 1.
-#ifdef Py_BUILD_CORE
+#if defined(Py_GIL_DISABLED)
+#define PyObject_HEAD_INIT(type)    \
+    {                               \
+        0,                          \
+        0,                          \
+        { 0 },                      \
+        0,                          \
+        _Py_IMMORTAL_REFCNT_LOCAL,  \
+        0,                          \
+        (type),                     \
+    },
+#elif defined(Py_BUILD_CORE)
 #define PyObject_HEAD_INIT(type)    \
     {                               \
-        _PyObject_EXTRA_INIT        \
         { _Py_IMMORTAL_REFCNT },    \
         (type)                      \
     },
 #else
 #define PyObject_HEAD_INIT(type) \
     {                            \
-        _PyObject_EXTRA_INIT     \
         { 1 },                   \
         (type)                   \
     },
@@ -163,16 +162,65 @@ check by comparing the reference count field to the immortality reference count.
  * by hand.  Similarly every pointer to a variable-size Python object can,
  * in addition, be cast to PyVarObject*.
  */
+#ifndef Py_GIL_DISABLED
 struct _object {
-    _PyObject_HEAD_EXTRA
+#if (defined(__GNUC__) || defined(__clang__)) \
+        && !(defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L)
+    // On C99 and older, anonymous union is a GCC and clang extension
+    __extension__
+#endif
+#ifdef _MSC_VER
+    // Ignore MSC warning C4201: "nonstandard extension used:
+    // nameless struct/union"
+    __pragma(warning(push))
+    __pragma(warning(disable: 4201))
+#endif
     union {
        Py_ssize_t ob_refcnt;
 #if SIZEOF_VOID_P > 4
        PY_UINT32_T ob_refcnt_split[2];
 #endif
     };
+#ifdef _MSC_VER
+    __pragma(warning(pop))
+#endif
+
     PyTypeObject *ob_type;
 };
+#else
+// Objects that are not owned by any thread use a thread id (tid) of zero.
+// This includes both immortal objects and objects whose reference count
+// fields have been merged.
+#define _Py_UNOWNED_TID             0
+
+// The shared reference count uses the two least-significant bits to store
+// flags. The remaining bits are used to store the reference count.
+#define _Py_REF_SHARED_SHIFT        2
+#define _Py_REF_SHARED_FLAG_MASK    0x3
+
+// The shared flags are initialized to zero.
+#define _Py_REF_SHARED_INIT         0x0
+#define _Py_REF_MAYBE_WEAKREF       0x1
+#define _Py_REF_QUEUED              0x2
+#define _Py_REF_MERGED              0x3
+
+// Create a shared field from a refcnt and desired flags
+#define _Py_REF_SHARED(refcnt, flags) (((refcnt) << _Py_REF_SHARED_SHIFT) + (flags))
+
+// NOTE: In non-free-threaded builds, `struct _PyMutex` is defined in
+// pycore_lock.h. See pycore_lock.h for more details.
+struct _PyMutex { uint8_t v; };
+
+struct _object {
+    uintptr_t ob_tid;           // thread id (or zero)
+    uint16_t _padding;
+    struct _PyMutex ob_mutex;   // per-object lock
+    uint8_t ob_gc_bits;         // gc-related state
+    uint32_t ob_ref_local;      // local reference count
+    Py_ssize_t ob_ref_shared;   // shared (atomic) reference count
+    PyTypeObject *ob_type;
+};
+#endif
 
 /* Cast argument to PyObject* type. */
 #define _PyObject_CAST(op) _Py_CAST(PyObject*, (op))
@@ -190,9 +238,76 @@ typedef struct {
 PyAPI_FUNC(int) Py_Is(PyObject *x, PyObject *y);
 #define Py_Is(x, y) ((x) == (y))
 
+#if defined(Py_GIL_DISABLED) && !defined(Py_LIMITED_API)
+static inline uintptr_t
+_Py_ThreadId(void)
+{
+    uintptr_t tid;
+#if defined(_MSC_VER) && defined(_M_X64)
+    tid = __readgsqword(48);
+#elif defined(_MSC_VER) && defined(_M_IX86)
+    tid = __readfsdword(24);
+#elif defined(_MSC_VER) && defined(_M_ARM64)
+    tid = __getReg(18);
+#elif defined(__i386__)
+    __asm__("movl %%gs:0, %0" : "=r" (tid));  // 32-bit always uses GS
+#elif defined(__MACH__) && defined(__x86_64__)
+    __asm__("movq %%gs:0, %0" : "=r" (tid));  // x86_64 macOSX uses GS
+#elif defined(__x86_64__)
+   __asm__("movq %%fs:0, %0" : "=r" (tid));  // x86_64 Linux, BSD uses FS
+#elif defined(__arm__)
+    __asm__ ("mrc p15, 0, %0, c13, c0, 3\nbic %0, %0, #3" : "=r" (tid));
+#elif defined(__aarch64__) && defined(__APPLE__)
+    __asm__ ("mrs %0, tpidrro_el0" : "=r" (tid));
+#elif defined(__aarch64__)
+    __asm__ ("mrs %0, tpidr_el0" : "=r" (tid));
+#elif defined(__powerpc64__)
+    #if defined(__clang__) && _Py__has_builtin(__builtin_thread_pointer)
+    tid = (uintptr_t)__builtin_thread_pointer();
+    #else
+    // r13 is reserved for use as system thread ID by the Power 64-bit ABI.
+    register uintptr_t tp __asm__ ("r13");
+    __asm__("" : "=r" (tp));
+    tid = tp;
+    #endif
+#elif defined(__powerpc__)
+    #if defined(__clang__) && _Py__has_builtin(__builtin_thread_pointer)
+    tid = (uintptr_t)__builtin_thread_pointer();
+    #else
+    // r2 is reserved for use as system thread ID by the Power 32-bit ABI.
+    register uintptr_t tp __asm__ ("r2");
+    __asm__ ("" : "=r" (tp));
+    tid = tp;
+    #endif
+#elif defined(__s390__) && defined(__GNUC__)
+    // Both GCC and Clang have supported __builtin_thread_pointer
+    // for s390 from long time ago.
+    tid = (uintptr_t)__builtin_thread_pointer();
+#else
+  # error "define _Py_ThreadId for this platform"
+#endif
+  return tid;
+}
+
+static inline Py_ALWAYS_INLINE int
+_Py_IsOwnedByCurrentThread(PyObject *ob)
+{
+    return ob->ob_tid == _Py_ThreadId();
+}
+#endif
 
 static inline Py_ssize_t Py_REFCNT(PyObject *ob) {
+#if !defined(Py_GIL_DISABLED)
     return ob->ob_refcnt;
+#else
+    uint32_t local = _Py_atomic_load_uint32_relaxed(&ob->ob_ref_local);
+    if (local == _Py_IMMORTAL_REFCNT_LOCAL) {
+        return _Py_IMMORTAL_REFCNT;
+    }
+    Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&ob->ob_ref_shared);
+    return _Py_STATIC_CAST(Py_ssize_t, local) +
+           Py_ARITHMETIC_RIGHT_SHIFT(Py_ssize_t, shared, _Py_REF_SHARED_SHIFT);
+#endif
 }
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
 #  define Py_REFCNT(ob) Py_REFCNT(_PyObject_CAST(ob))
@@ -223,10 +338,12 @@ static inline Py_ssize_t Py_SIZE(PyObject *ob) {
 
 static inline Py_ALWAYS_INLINE int _Py_IsImmortal(PyObject *op)
 {
-#if SIZEOF_VOID_P > 4
-    return _Py_CAST(PY_INT32_T, op->ob_refcnt) < 0;
+#if defined(Py_GIL_DISABLED)
+    return (op->ob_ref_local == _Py_IMMORTAL_REFCNT_LOCAL);
+#elif SIZEOF_VOID_P > 4
+    return (_Py_CAST(PY_INT32_T, op->ob_refcnt) < 0);
 #else
-    return op->ob_refcnt == _Py_IMMORTAL_REFCNT;
+    return (op->ob_refcnt == _Py_IMMORTAL_REFCNT);
 #endif
 }
 #define _Py_IsImmortal(op) _Py_IsImmortal(_PyObject_CAST(op))
@@ -239,7 +356,15 @@ static inline int Py_IS_TYPE(PyObject *ob, PyTypeObject *type) {
 #endif
 
 
+// Py_SET_REFCNT() implementation for stable ABI
+PyAPI_FUNC(void) _Py_SetRefcnt(PyObject *ob, Py_ssize_t refcnt);
+
 static inline void Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt) {
+#if defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030d0000
+    // Stable ABI implements Py_SET_REFCNT() as a function call
+    // on limited C API version 3.13 and newer.
+    _Py_SetRefcnt(ob, refcnt);
+#else
     // This immortal check is for code that is unaware of immortal objects.
     // The runtime tracks these objects and we should avoid as much
     // as possible having extensions inadvertently change the refcnt
@@ -247,7 +372,33 @@ static inline void Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt) {
     if (_Py_IsImmortal(ob)) {
         return;
     }
+
+#ifndef Py_GIL_DISABLED
     ob->ob_refcnt = refcnt;
+#else
+    if (_Py_IsOwnedByCurrentThread(ob)) {
+        if ((size_t)refcnt > (size_t)UINT32_MAX) {
+            // On overflow, make the object immortal
+            ob->ob_tid = _Py_UNOWNED_TID;
+            ob->ob_ref_local = _Py_IMMORTAL_REFCNT_LOCAL;
+            ob->ob_ref_shared = 0;
+        }
+        else {
+            // Set local refcount to desired refcount and shared refcount
+            // to zero, but preserve the shared refcount flags.
+            ob->ob_ref_local = _Py_STATIC_CAST(uint32_t, refcnt);
+            ob->ob_ref_shared &= _Py_REF_SHARED_FLAG_MASK;
+        }
+    }
+    else {
+        // Set local refcount to zero and shared refcount to desired refcount.
+        // Mark the object as merged.
+        ob->ob_tid = _Py_UNOWNED_TID;
+        ob->ob_ref_local = 0;
+        ob->ob_ref_shared = _Py_REF_SHARED(refcnt, _Py_REF_MERGED);
+    }
+#endif  // Py_GIL_DISABLED
+#endif  // Py_LIMITED_API+0 < 0x030d0000
 }
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
 #  define Py_SET_REFCNT(ob, refcnt) Py_SET_REFCNT(_PyObject_CAST(ob), (refcnt))
@@ -391,10 +542,20 @@ PyAPI_FUNC(PyObject *) PyObject_RichCompare(PyObject *, PyObject *, int);
 PyAPI_FUNC(int) PyObject_RichCompareBool(PyObject *, PyObject *, int);
 PyAPI_FUNC(PyObject *) PyObject_GetAttrString(PyObject *, const char *);
 PyAPI_FUNC(int) PyObject_SetAttrString(PyObject *, const char *, PyObject *);
+PyAPI_FUNC(int) PyObject_DelAttrString(PyObject *v, const char *name);
 PyAPI_FUNC(int) PyObject_HasAttrString(PyObject *, const char *);
 PyAPI_FUNC(PyObject *) PyObject_GetAttr(PyObject *, PyObject *);
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+PyAPI_FUNC(int) PyObject_GetOptionalAttr(PyObject *, PyObject *, PyObject **);
+PyAPI_FUNC(int) PyObject_GetOptionalAttrString(PyObject *, const char *, PyObject **);
+#endif
 PyAPI_FUNC(int) PyObject_SetAttr(PyObject *, PyObject *, PyObject *);
+PyAPI_FUNC(int) PyObject_DelAttr(PyObject *v, PyObject *name);
 PyAPI_FUNC(int) PyObject_HasAttr(PyObject *, PyObject *);
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+PyAPI_FUNC(int) PyObject_HasAttrWithError(PyObject *, PyObject *);
+PyAPI_FUNC(int) PyObject_HasAttrStringWithError(PyObject *, const char *);
+#endif
 PyAPI_FUNC(PyObject *) PyObject_SelfIter(PyObject *);
 PyAPI_FUNC(PyObject *) PyObject_GenericGetAttr(PyObject *, PyObject *);
 PyAPI_FUNC(int) PyObject_GenericSetAttr(PyObject *, PyObject *, PyObject *);
@@ -415,12 +576,6 @@ PyAPI_FUNC(void) PyObject_ClearWeakRefs(PyObject *);
 */
 PyAPI_FUNC(PyObject *) PyObject_Dir(PyObject *);
 
-/* Pickle support. */
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(PyObject *) _PyObject_GetState(PyObject *);
-#endif
-
-
 /* Helpers for printing recursive container types */
 PyAPI_FUNC(int) Py_ReprEnter(PyObject *);
 PyAPI_FUNC(void) Py_ReprLeave(PyObject *);
@@ -585,20 +740,12 @@ decision that's up to the implementer of each new type so if you want,
 you can count such references to the type object.)
 */
 
-#ifdef Py_REF_DEBUG
-#  if defined(Py_LIMITED_API) && Py_LIMITED_API+0 < 0x030A0000
-extern Py_ssize_t _Py_RefTotal;
-#    define _Py_INC_REFTOTAL() _Py_RefTotal++
-#    define _Py_DEC_REFTOTAL() _Py_RefTotal--
-#  elif !defined(Py_LIMITED_API) || Py_LIMITED_API+0 > 0x030C0000
-PyAPI_FUNC(void) _Py_IncRefTotal_DO_NOT_USE_THIS(void);
-PyAPI_FUNC(void) _Py_DecRefTotal_DO_NOT_USE_THIS(void);
-#    define _Py_INC_REFTOTAL() _Py_IncRefTotal_DO_NOT_USE_THIS()
-#    define _Py_DEC_REFTOTAL() _Py_DecRefTotal_DO_NOT_USE_THIS()
-#  endif
+#if defined(Py_REF_DEBUG) && !defined(Py_LIMITED_API)
 PyAPI_FUNC(void) _Py_NegativeRefcount(const char *filename, int lineno,
                                       PyObject *op);
-#endif /* Py_REF_DEBUG */
+PyAPI_FUNC(void) _Py_INCREF_IncRefTotal(void);
+PyAPI_FUNC(void) _Py_DECREF_DecRefTotal(void);
+#endif  // Py_REF_DEBUG && !Py_LIMITED_API
 
 PyAPI_FUNC(void) _Py_Dealloc(PyObject *);
 
@@ -616,17 +763,39 @@ PyAPI_FUNC(void) _Py_DecRef(PyObject *);
 
 static inline Py_ALWAYS_INLINE void Py_INCREF(PyObject *op)
 {
-#if defined(Py_REF_DEBUG) && defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000
-    // Stable ABI for Python 3.10 built in debug mode.
+#if defined(Py_LIMITED_API) && (Py_LIMITED_API+0 >= 0x030c0000 || defined(Py_REF_DEBUG))
+    // Stable ABI implements Py_INCREF() as a function call on limited C API
+    // version 3.12 and newer, and on Python built in debug mode. _Py_IncRef()
+    // was added to Python 3.10.0a7, use Py_IncRef() on older Python versions.
+    // Py_IncRef() accepts NULL whereas _Py_IncRef() doesn't.
+#  if Py_LIMITED_API+0 >= 0x030a00A7
     _Py_IncRef(op);
+#  else
+    Py_IncRef(op);
+#  endif
 #else
     // Non-limited C API and limited C API for Python 3.9 and older access
     // directly PyObject.ob_refcnt.
-#if SIZEOF_VOID_P > 4
+#if defined(Py_GIL_DISABLED)
+    uint32_t local = _Py_atomic_load_uint32_relaxed(&op->ob_ref_local);
+    uint32_t new_local = local + 1;
+    if (new_local == 0) {
+        // local is equal to _Py_IMMORTAL_REFCNT: do nothing
+        return;
+    }
+    if (_Py_IsOwnedByCurrentThread(op)) {
+        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, new_local);
+    }
+    else {
+        _Py_atomic_add_ssize(&op->ob_ref_shared, (1 << _Py_REF_SHARED_SHIFT));
+    }
+#elif SIZEOF_VOID_P > 4
     // Portable saturated add, branching on the carry flag and set low bits
     PY_UINT32_T cur_refcnt = op->ob_refcnt_split[PY_BIG_ENDIAN];
     PY_UINT32_T new_refcnt = cur_refcnt + 1;
     if (new_refcnt == 0) {
+        // cur_refcnt is equal to _Py_IMMORTAL_REFCNT: the object is immortal,
+        // do nothing
         return;
     }
     op->ob_refcnt_split[PY_BIG_ENDIAN] = new_refcnt;
@@ -639,7 +808,7 @@ static inline Py_ALWAYS_INLINE void Py_INCREF(PyObject *op)
 #endif
     _Py_INCREF_STAT_INC();
 #ifdef Py_REF_DEBUG
-    _Py_INC_REFTOTAL();
+    _Py_INCREF_IncRefTotal();
 #endif
 #endif
 }
@@ -647,27 +816,91 @@ static inline Py_ALWAYS_INLINE void Py_INCREF(PyObject *op)
 #  define Py_INCREF(op) Py_INCREF(_PyObject_CAST(op))
 #endif
 
-#if defined(Py_REF_DEBUG) && defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000
-// Stable ABI for limited C API version 3.10 of Python debug build
+
+#if !defined(Py_LIMITED_API) && defined(Py_GIL_DISABLED)
+// Implements Py_DECREF on objects not owned by the current thread.
+PyAPI_FUNC(void) _Py_DecRefShared(PyObject *);
+PyAPI_FUNC(void) _Py_DecRefSharedDebug(PyObject *, const char *, int);
+
+// Called from Py_DECREF by the owning thread when the local refcount reaches
+// zero. The call will deallocate the object if the shared refcount is also
+// zero. Otherwise, the thread gives up ownership and merges the reference
+// count fields.
+PyAPI_FUNC(void) _Py_MergeZeroLocalRefcount(PyObject *);
+#endif
+
+#if defined(Py_LIMITED_API) && (Py_LIMITED_API+0 >= 0x030c0000 || defined(Py_REF_DEBUG))
+// Stable ABI implements Py_DECREF() as a function call on limited C API
+// version 3.12 and newer, and on Python built in debug mode. _Py_DecRef() was
+// added to Python 3.10.0a7, use Py_DecRef() on older Python versions.
+// Py_DecRef() accepts NULL whereas _Py_IncRef() doesn't.
 static inline void Py_DECREF(PyObject *op) {
+#  if Py_LIMITED_API+0 >= 0x030a00A7
     _Py_DecRef(op);
+#  else
+    Py_DecRef(op);
+#  endif
 }
 #define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
 
-#elif defined(Py_REF_DEBUG)
+#elif defined(Py_GIL_DISABLED) && defined(Py_REF_DEBUG)
 static inline void Py_DECREF(const char *filename, int lineno, PyObject *op)
 {
-    if (_Py_IsImmortal(op)) {
+    uint32_t local = _Py_atomic_load_uint32_relaxed(&op->ob_ref_local);
+    if (local == _Py_IMMORTAL_REFCNT_LOCAL) {
         return;
     }
     _Py_DECREF_STAT_INC();
-    _Py_DEC_REFTOTAL();
-    if (--op->ob_refcnt != 0) {
-        if (op->ob_refcnt < 0) {
+    _Py_DECREF_DecRefTotal();
+    if (_Py_IsOwnedByCurrentThread(op)) {
+        if (local == 0) {
             _Py_NegativeRefcount(filename, lineno, op);
         }
+        local--;
+        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, local);
+        if (local == 0) {
+            _Py_MergeZeroLocalRefcount(op);
+        }
     }
     else {
+        _Py_DecRefSharedDebug(op, filename, lineno);
+    }
+}
+#define Py_DECREF(op) Py_DECREF(__FILE__, __LINE__, _PyObject_CAST(op))
+
+#elif defined(Py_GIL_DISABLED)
+static inline void Py_DECREF(PyObject *op)
+{
+    uint32_t local = _Py_atomic_load_uint32_relaxed(&op->ob_ref_local);
+    if (local == _Py_IMMORTAL_REFCNT_LOCAL) {
+        return;
+    }
+    _Py_DECREF_STAT_INC();
+    if (_Py_IsOwnedByCurrentThread(op)) {
+        local--;
+        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, local);
+        if (local == 0) {
+            _Py_MergeZeroLocalRefcount(op);
+        }
+    }
+    else {
+        _Py_DecRefShared(op);
+    }
+}
+#define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
+
+#elif defined(Py_REF_DEBUG)
+static inline void Py_DECREF(const char *filename, int lineno, PyObject *op)
+{
+    if (op->ob_refcnt <= 0) {
+        _Py_NegativeRefcount(filename, lineno, op);
+    }
+    if (_Py_IsImmortal(op)) {
+        return;
+    }
+    _Py_DECREF_STAT_INC();
+    _Py_DECREF_DecRefTotal();
+    if (--op->ob_refcnt == 0) {
         _Py_Dealloc(op);
     }
 }
@@ -689,9 +922,6 @@ static inline Py_ALWAYS_INLINE void Py_DECREF(PyObject *op)
 #define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
 #endif
 
-#undef _Py_INC_REFTOTAL
-#undef _Py_DEC_REFTOTAL
-
 
 /* Safely decref `op` and set `op` to NULL, especially useful in tp_clear
  * and tp_dealloc implementations.
@@ -820,8 +1050,6 @@ static inline PyObject* _Py_XNewRef(PyObject *obj)
 /*
 _Py_NoneStruct is an object of undefined type which can be used in contexts
 where NULL (nil) is not suitable (since NULL often means 'error').
-
-Don't forget to apply Py_INCREF() when returning this value!!!
 */
 PyAPI_DATA(PyObject) _Py_NoneStruct; /* Don't use this directly */
 #define Py_None (&_Py_NoneStruct)
diff --git a/Include/objimpl.h b/Include/objimpl.h
index ef871c5ea93ebe..ff5fa7a8c1d3d8 100644
--- a/Include/objimpl.h
+++ b/Include/objimpl.h
@@ -1,12 +1,8 @@
-/* The PyObject_ memory family:  high-level object memory interfaces.
-   See pymem.h for the low-level PyMem_ family.
-*/
+// The PyObject_ memory family:  high-level object memory interfaces.
+// See pymem.h for the low-level PyMem_ family.
 
 #ifndef Py_OBJIMPL_H
 #define Py_OBJIMPL_H
-
-#include "pymem.h"
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -39,7 +35,7 @@ Functions and macros for modules that implement new object types.
    fields, this also fills in the ob_size field.
 
  - PyObject_Free(op) releases the memory allocated for an object.  It does not
-   run a destructor -- it only frees the memory.  PyObject_Free is identical.
+   run a destructor -- it only frees the memory.
 
  - PyObject_Init(op, typeobj) and PyObject_InitVar(op, typeobj, n) don't
    allocate memory.  Instead of a 'type' parameter, they take a pointer to a
@@ -231,4 +227,4 @@ PyAPI_FUNC(int) PyObject_GC_IsFinalized(PyObject *);
 #ifdef __cplusplus
 }
 #endif
-#endif /* !Py_OBJIMPL_H */
+#endif   // !Py_OBJIMPL_H
diff --git a/Include/opcode.h b/Include/opcode.h
index c3b6e5dce49ad3..2619b690019acc 100644
--- a/Include/opcode.h
+++ b/Include/opcode.h
@@ -1,234 +1,11 @@
-// Auto-generated by Tools/build/generate_opcode_h.py from Lib/opcode.py
-
 #ifndef Py_OPCODE_H
 #define Py_OPCODE_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include "opcode_ids.h"
 
-/* Instruction opcodes for compiled code */
-#define CACHE                                    0
-#define POP_TOP                                  1
-#define PUSH_NULL                                2
-#define INTERPRETER_EXIT                         3
-#define END_FOR                                  4
-#define END_SEND                                 5
-#define NOP                                      9
-#define UNARY_NEGATIVE                          11
-#define UNARY_NOT                               12
-#define UNARY_INVERT                            15
-#define RESERVED                                17
-#define BINARY_SUBSCR                           25
-#define BINARY_SLICE                            26
-#define STORE_SLICE                             27
-#define GET_LEN                                 30
-#define MATCH_MAPPING                           31
-#define MATCH_SEQUENCE                          32
-#define MATCH_KEYS                              33
-#define PUSH_EXC_INFO                           35
-#define CHECK_EXC_MATCH                         36
-#define CHECK_EG_MATCH                          37
-#define WITH_EXCEPT_START                       49
-#define GET_AITER                               50
-#define GET_ANEXT                               51
-#define BEFORE_ASYNC_WITH                       52
-#define BEFORE_WITH                             53
-#define END_ASYNC_FOR                           54
-#define CLEANUP_THROW                           55
-#define STORE_SUBSCR                            60
-#define DELETE_SUBSCR                           61
-#define GET_ITER                                68
-#define GET_YIELD_FROM_ITER                     69
-#define LOAD_BUILD_CLASS                        71
-#define LOAD_ASSERTION_ERROR                    74
-#define RETURN_GENERATOR                        75
-#define RETURN_VALUE                            83
-#define SETUP_ANNOTATIONS                       85
-#define POP_EXCEPT                              89
-#define HAVE_ARGUMENT                           90
-#define STORE_NAME                              90
-#define DELETE_NAME                             91
-#define UNPACK_SEQUENCE                         92
-#define FOR_ITER                                93
-#define UNPACK_EX                               94
-#define STORE_ATTR                              95
-#define DELETE_ATTR                             96
-#define STORE_GLOBAL                            97
-#define DELETE_GLOBAL                           98
-#define SWAP                                    99
-#define LOAD_CONST                             100
-#define LOAD_NAME                              101
-#define BUILD_TUPLE                            102
-#define BUILD_LIST                             103
-#define BUILD_SET                              104
-#define BUILD_MAP                              105
-#define LOAD_ATTR                              106
-#define COMPARE_OP                             107
-#define IMPORT_NAME                            108
-#define IMPORT_FROM                            109
-#define JUMP_FORWARD                           110
-#define POP_JUMP_IF_FALSE                      114
-#define POP_JUMP_IF_TRUE                       115
-#define LOAD_GLOBAL                            116
-#define IS_OP                                  117
-#define CONTAINS_OP                            118
-#define RERAISE                                119
-#define COPY                                   120
-#define RETURN_CONST                           121
-#define BINARY_OP                              122
-#define SEND                                   123
-#define LOAD_FAST                              124
-#define STORE_FAST                             125
-#define DELETE_FAST                            126
-#define LOAD_FAST_CHECK                        127
-#define POP_JUMP_IF_NOT_NONE                   128
-#define POP_JUMP_IF_NONE                       129
-#define RAISE_VARARGS                          130
-#define GET_AWAITABLE                          131
-#define MAKE_FUNCTION                          132
-#define BUILD_SLICE                            133
-#define JUMP_BACKWARD_NO_INTERRUPT             134
-#define MAKE_CELL                              135
-#define LOAD_CLOSURE                           136
-#define LOAD_DEREF                             137
-#define STORE_DEREF                            138
-#define DELETE_DEREF                           139
-#define JUMP_BACKWARD                          140
-#define LOAD_SUPER_ATTR                        141
-#define CALL_FUNCTION_EX                       142
-#define LOAD_FAST_AND_CLEAR                    143
-#define EXTENDED_ARG                           144
-#define LIST_APPEND                            145
-#define SET_ADD                                146
-#define MAP_ADD                                147
-#define LOAD_CLASSDEREF                        148
-#define COPY_FREE_VARS                         149
-#define YIELD_VALUE                            150
-#define RESUME                                 151
-#define MATCH_CLASS                            152
-#define FORMAT_VALUE                           155
-#define BUILD_CONST_KEY_MAP                    156
-#define BUILD_STRING                           157
-#define LIST_EXTEND                            162
-#define SET_UPDATE                             163
-#define DICT_MERGE                             164
-#define DICT_UPDATE                            165
-#define CALL                                   171
-#define KW_NAMES                               172
-#define CALL_INTRINSIC_1                       173
-#define CALL_INTRINSIC_2                       174
-#define MIN_INSTRUMENTED_OPCODE                238
-#define INSTRUMENTED_POP_JUMP_IF_NONE          238
-#define INSTRUMENTED_POP_JUMP_IF_NOT_NONE      239
-#define INSTRUMENTED_RESUME                    240
-#define INSTRUMENTED_CALL                      241
-#define INSTRUMENTED_RETURN_VALUE              242
-#define INSTRUMENTED_YIELD_VALUE               243
-#define INSTRUMENTED_CALL_FUNCTION_EX          244
-#define INSTRUMENTED_JUMP_FORWARD              245
-#define INSTRUMENTED_JUMP_BACKWARD             246
-#define INSTRUMENTED_RETURN_CONST              247
-#define INSTRUMENTED_FOR_ITER                  248
-#define INSTRUMENTED_POP_JUMP_IF_FALSE         249
-#define INSTRUMENTED_POP_JUMP_IF_TRUE          250
-#define INSTRUMENTED_END_FOR                   251
-#define INSTRUMENTED_END_SEND                  252
-#define INSTRUMENTED_INSTRUCTION               253
-#define INSTRUMENTED_LINE                      254
-#define MIN_PSEUDO_OPCODE                      256
-#define SETUP_FINALLY                          256
-#define SETUP_CLEANUP                          257
-#define SETUP_WITH                             258
-#define POP_BLOCK                              259
-#define JUMP                                   260
-#define JUMP_NO_INTERRUPT                      261
-#define LOAD_METHOD                            262
-#define LOAD_SUPER_METHOD                      263
-#define LOAD_ZERO_SUPER_METHOD                 264
-#define LOAD_ZERO_SUPER_ATTR                   265
-#define STORE_FAST_MAYBE_NULL                  266
-#define MAX_PSEUDO_OPCODE                      266
-#define BINARY_OP_ADD_FLOAT                      6
-#define BINARY_OP_ADD_INT                        7
-#define BINARY_OP_ADD_UNICODE                    8
-#define BINARY_OP_INPLACE_ADD_UNICODE           10
-#define BINARY_OP_MULTIPLY_FLOAT                13
-#define BINARY_OP_MULTIPLY_INT                  14
-#define BINARY_OP_SUBTRACT_FLOAT                16
-#define BINARY_OP_SUBTRACT_INT                  18
-#define BINARY_SUBSCR_DICT                      19
-#define BINARY_SUBSCR_GETITEM                   20
-#define BINARY_SUBSCR_LIST_INT                  21
-#define BINARY_SUBSCR_TUPLE_INT                 22
-#define CALL_PY_EXACT_ARGS                      23
-#define CALL_PY_WITH_DEFAULTS                   24
-#define CALL_BOUND_METHOD_EXACT_ARGS            28
-#define CALL_BUILTIN_CLASS                      29
-#define CALL_BUILTIN_FAST_WITH_KEYWORDS         34
-#define CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS  38
-#define CALL_NO_KW_BUILTIN_FAST                 39
-#define CALL_NO_KW_BUILTIN_O                    40
-#define CALL_NO_KW_ISINSTANCE                   41
-#define CALL_NO_KW_LEN                          42
-#define CALL_NO_KW_LIST_APPEND                  43
-#define CALL_NO_KW_METHOD_DESCRIPTOR_FAST       44
-#define CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS     45
-#define CALL_NO_KW_METHOD_DESCRIPTOR_O          46
-#define CALL_NO_KW_STR_1                        47
-#define CALL_NO_KW_TUPLE_1                      48
-#define CALL_NO_KW_TYPE_1                       56
-#define COMPARE_OP_FLOAT                        57
-#define COMPARE_OP_INT                          58
-#define COMPARE_OP_STR                          59
-#define FOR_ITER_LIST                           62
-#define FOR_ITER_TUPLE                          63
-#define FOR_ITER_RANGE                          64
-#define FOR_ITER_GEN                            65
-#define LOAD_SUPER_ATTR_ATTR                    66
-#define LOAD_SUPER_ATTR_METHOD                  67
-#define LOAD_ATTR_CLASS                         70
-#define LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN       72
-#define LOAD_ATTR_INSTANCE_VALUE                73
-#define LOAD_ATTR_MODULE                        76
-#define LOAD_ATTR_PROPERTY                      77
-#define LOAD_ATTR_SLOT                          78
-#define LOAD_ATTR_WITH_HINT                     79
-#define LOAD_ATTR_METHOD_LAZY_DICT              80
-#define LOAD_ATTR_METHOD_NO_DICT                81
-#define LOAD_ATTR_METHOD_WITH_VALUES            82
-#define LOAD_CONST__LOAD_FAST                   84
-#define LOAD_FAST__LOAD_CONST                   86
-#define LOAD_FAST__LOAD_FAST                    87
-#define LOAD_GLOBAL_BUILTIN                     88
-#define LOAD_GLOBAL_MODULE                     111
-#define STORE_ATTR_INSTANCE_VALUE              112
-#define STORE_ATTR_SLOT                        113
-#define STORE_ATTR_WITH_HINT                   153
-#define STORE_FAST__LOAD_FAST                  154
-#define STORE_FAST__STORE_FAST                 158
-#define STORE_SUBSCR_DICT                      159
-#define STORE_SUBSCR_LIST_INT                  160
-#define UNPACK_SEQUENCE_LIST                   161
-#define UNPACK_SEQUENCE_TUPLE                  166
-#define UNPACK_SEQUENCE_TWO_TUPLE              167
-#define SEND_GEN                               168
-
-#define HAS_ARG(op) ((((op) >= HAVE_ARGUMENT) && (!IS_PSEUDO_OPCODE(op)))\
-    || ((op) == JUMP) \
-    || ((op) == JUMP_NO_INTERRUPT) \
-    || ((op) == LOAD_METHOD) \
-    || ((op) == LOAD_SUPER_METHOD) \
-    || ((op) == LOAD_ZERO_SUPER_METHOD) \
-    || ((op) == LOAD_ZERO_SUPER_ATTR) \
-    || ((op) == STORE_FAST_MAYBE_NULL) \
-    )
-
-#define HAS_CONST(op) (false\
-    || ((op) == LOAD_CONST) \
-    || ((op) == RETURN_CONST) \
-    || ((op) == KW_NAMES) \
-    )
 
 #define NB_ADD                                   0
 #define NB_AND                                   1
@@ -257,10 +34,7 @@ extern "C" {
 #define NB_INPLACE_TRUE_DIVIDE                  24
 #define NB_INPLACE_XOR                          25
 
-/* Defined in Lib/opcode.py */
-#define ENABLE_SPECIALIZATION 1
-
-#define IS_PSEUDO_OPCODE(op) (((op) >= MIN_PSEUDO_OPCODE) && ((op) <= MAX_PSEUDO_OPCODE))
+#define NB_OPARG_LAST                           25
 
 #ifdef __cplusplus
 }
diff --git a/Include/opcode_ids.h b/Include/opcode_ids.h
new file mode 100644
index 00000000000000..47f809e345f61c
--- /dev/null
+++ b/Include/opcode_ids.h
@@ -0,0 +1,240 @@
+// This file is generated by Tools/cases_generator/opcode_id_generator.py
+// from:
+//   ['./Python/bytecodes.c']
+// Do not edit!
+
+#ifndef Py_OPCODE_IDS_H
+#define Py_OPCODE_IDS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Instruction opcodes for compiled code */
+#define CACHE                                    0
+#define BEFORE_ASYNC_WITH                        1
+#define BEFORE_WITH                              2
+#define BINARY_OP_INPLACE_ADD_UNICODE            3
+#define BINARY_SLICE                             4
+#define BINARY_SUBSCR                            5
+#define CHECK_EG_MATCH                           6
+#define CHECK_EXC_MATCH                          7
+#define CLEANUP_THROW                            8
+#define DELETE_SUBSCR                            9
+#define END_ASYNC_FOR                           10
+#define END_FOR                                 11
+#define END_SEND                                12
+#define EXIT_INIT_CHECK                         13
+#define FORMAT_SIMPLE                           14
+#define FORMAT_WITH_SPEC                        15
+#define GET_AITER                               16
+#define RESERVED                                17
+#define GET_ANEXT                               18
+#define GET_ITER                                19
+#define GET_LEN                                 20
+#define GET_YIELD_FROM_ITER                     21
+#define INTERPRETER_EXIT                        22
+#define LOAD_ASSERTION_ERROR                    23
+#define LOAD_BUILD_CLASS                        24
+#define LOAD_LOCALS                             25
+#define MAKE_FUNCTION                           26
+#define MATCH_KEYS                              27
+#define MATCH_MAPPING                           28
+#define MATCH_SEQUENCE                          29
+#define NOP                                     30
+#define POP_EXCEPT                              31
+#define POP_TOP                                 32
+#define PUSH_EXC_INFO                           33
+#define PUSH_NULL                               34
+#define RETURN_GENERATOR                        35
+#define RETURN_VALUE                            36
+#define SETUP_ANNOTATIONS                       37
+#define STORE_SLICE                             38
+#define STORE_SUBSCR                            39
+#define TO_BOOL                                 40
+#define UNARY_INVERT                            41
+#define UNARY_NEGATIVE                          42
+#define UNARY_NOT                               43
+#define WITH_EXCEPT_START                       44
+#define BINARY_OP                               45
+#define BUILD_CONST_KEY_MAP                     46
+#define BUILD_LIST                              47
+#define BUILD_MAP                               48
+#define BUILD_SET                               49
+#define BUILD_SLICE                             50
+#define BUILD_STRING                            51
+#define BUILD_TUPLE                             52
+#define CALL                                    53
+#define CALL_FUNCTION_EX                        54
+#define CALL_INTRINSIC_1                        55
+#define CALL_INTRINSIC_2                        56
+#define CALL_KW                                 57
+#define COMPARE_OP                              58
+#define CONTAINS_OP                             59
+#define CONVERT_VALUE                           60
+#define COPY                                    61
+#define COPY_FREE_VARS                          62
+#define DELETE_ATTR                             63
+#define DELETE_DEREF                            64
+#define DELETE_FAST                             65
+#define DELETE_GLOBAL                           66
+#define DELETE_NAME                             67
+#define DICT_MERGE                              68
+#define DICT_UPDATE                             69
+#define ENTER_EXECUTOR                          70
+#define EXTENDED_ARG                            71
+#define FOR_ITER                                72
+#define GET_AWAITABLE                           73
+#define IMPORT_FROM                             74
+#define IMPORT_NAME                             75
+#define IS_OP                                   76
+#define JUMP_BACKWARD                           77
+#define JUMP_BACKWARD_NO_INTERRUPT              78
+#define JUMP_FORWARD                            79
+#define LIST_APPEND                             80
+#define LIST_EXTEND                             81
+#define LOAD_ATTR                               82
+#define LOAD_CONST                              83
+#define LOAD_DEREF                              84
+#define LOAD_FAST                               85
+#define LOAD_FAST_AND_CLEAR                     86
+#define LOAD_FAST_CHECK                         87
+#define LOAD_FAST_LOAD_FAST                     88
+#define LOAD_FROM_DICT_OR_DEREF                 89
+#define LOAD_FROM_DICT_OR_GLOBALS               90
+#define LOAD_GLOBAL                             91
+#define LOAD_NAME                               92
+#define LOAD_SUPER_ATTR                         93
+#define MAKE_CELL                               94
+#define MAP_ADD                                 95
+#define MATCH_CLASS                             96
+#define POP_JUMP_IF_FALSE                       97
+#define POP_JUMP_IF_NONE                        98
+#define POP_JUMP_IF_NOT_NONE                    99
+#define POP_JUMP_IF_TRUE                       100
+#define RAISE_VARARGS                          101
+#define RERAISE                                102
+#define RETURN_CONST                           103
+#define SEND                                   104
+#define SET_ADD                                105
+#define SET_FUNCTION_ATTRIBUTE                 106
+#define SET_UPDATE                             107
+#define STORE_ATTR                             108
+#define STORE_DEREF                            109
+#define STORE_FAST                             110
+#define STORE_FAST_LOAD_FAST                   111
+#define STORE_FAST_STORE_FAST                  112
+#define STORE_GLOBAL                           113
+#define STORE_NAME                             114
+#define SWAP                                   115
+#define UNPACK_EX                              116
+#define UNPACK_SEQUENCE                        117
+#define YIELD_VALUE                            118
+#define RESUME                                 149
+#define BINARY_OP_ADD_FLOAT                    150
+#define BINARY_OP_ADD_INT                      151
+#define BINARY_OP_ADD_UNICODE                  152
+#define BINARY_OP_MULTIPLY_FLOAT               153
+#define BINARY_OP_MULTIPLY_INT                 154
+#define BINARY_OP_SUBTRACT_FLOAT               155
+#define BINARY_OP_SUBTRACT_INT                 156
+#define BINARY_SUBSCR_DICT                     157
+#define BINARY_SUBSCR_GETITEM                  158
+#define BINARY_SUBSCR_LIST_INT                 159
+#define BINARY_SUBSCR_STR_INT                  160
+#define BINARY_SUBSCR_TUPLE_INT                161
+#define CALL_ALLOC_AND_ENTER_INIT              162
+#define CALL_BOUND_METHOD_EXACT_ARGS           163
+#define CALL_BUILTIN_CLASS                     164
+#define CALL_BUILTIN_FAST                      165
+#define CALL_BUILTIN_FAST_WITH_KEYWORDS        166
+#define CALL_BUILTIN_O                         167
+#define CALL_ISINSTANCE                        168
+#define CALL_LEN                               169
+#define CALL_LIST_APPEND                       170
+#define CALL_METHOD_DESCRIPTOR_FAST            171
+#define CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS 172
+#define CALL_METHOD_DESCRIPTOR_NOARGS          173
+#define CALL_METHOD_DESCRIPTOR_O               174
+#define CALL_PY_EXACT_ARGS                     175
+#define CALL_PY_WITH_DEFAULTS                  176
+#define CALL_STR_1                             177
+#define CALL_TUPLE_1                           178
+#define CALL_TYPE_1                            179
+#define COMPARE_OP_FLOAT                       180
+#define COMPARE_OP_INT                         181
+#define COMPARE_OP_STR                         182
+#define FOR_ITER_GEN                           183
+#define FOR_ITER_LIST                          184
+#define FOR_ITER_RANGE                         185
+#define FOR_ITER_TUPLE                         186
+#define LOAD_ATTR_CLASS                        187
+#define LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN      188
+#define LOAD_ATTR_INSTANCE_VALUE               189
+#define LOAD_ATTR_METHOD_LAZY_DICT             190
+#define LOAD_ATTR_METHOD_NO_DICT               191
+#define LOAD_ATTR_METHOD_WITH_VALUES           192
+#define LOAD_ATTR_MODULE                       193
+#define LOAD_ATTR_NONDESCRIPTOR_NO_DICT        194
+#define LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES    195
+#define LOAD_ATTR_PROPERTY                     196
+#define LOAD_ATTR_SLOT                         197
+#define LOAD_ATTR_WITH_HINT                    198
+#define LOAD_GLOBAL_BUILTIN                    199
+#define LOAD_GLOBAL_MODULE                     200
+#define LOAD_SUPER_ATTR_ATTR                   201
+#define LOAD_SUPER_ATTR_METHOD                 202
+#define RESUME_CHECK                           203
+#define SEND_GEN                               204
+#define STORE_ATTR_INSTANCE_VALUE              205
+#define STORE_ATTR_SLOT                        206
+#define STORE_ATTR_WITH_HINT                   207
+#define STORE_SUBSCR_DICT                      208
+#define STORE_SUBSCR_LIST_INT                  209
+#define TO_BOOL_ALWAYS_TRUE                    210
+#define TO_BOOL_BOOL                           211
+#define TO_BOOL_INT                            212
+#define TO_BOOL_LIST                           213
+#define TO_BOOL_NONE                           214
+#define TO_BOOL_STR                            215
+#define UNPACK_SEQUENCE_LIST                   216
+#define UNPACK_SEQUENCE_TUPLE                  217
+#define UNPACK_SEQUENCE_TWO_TUPLE              218
+#define INSTRUMENTED_RESUME                    236
+#define INSTRUMENTED_END_FOR                   237
+#define INSTRUMENTED_END_SEND                  238
+#define INSTRUMENTED_RETURN_VALUE              239
+#define INSTRUMENTED_RETURN_CONST              240
+#define INSTRUMENTED_YIELD_VALUE               241
+#define INSTRUMENTED_LOAD_SUPER_ATTR           242
+#define INSTRUMENTED_FOR_ITER                  243
+#define INSTRUMENTED_CALL                      244
+#define INSTRUMENTED_CALL_KW                   245
+#define INSTRUMENTED_CALL_FUNCTION_EX          246
+#define INSTRUMENTED_INSTRUCTION               247
+#define INSTRUMENTED_JUMP_FORWARD              248
+#define INSTRUMENTED_JUMP_BACKWARD             249
+#define INSTRUMENTED_POP_JUMP_IF_TRUE          250
+#define INSTRUMENTED_POP_JUMP_IF_FALSE         251
+#define INSTRUMENTED_POP_JUMP_IF_NONE          252
+#define INSTRUMENTED_POP_JUMP_IF_NOT_NONE      253
+#define INSTRUMENTED_LINE                      254
+#define JUMP                                   256
+#define JUMP_NO_INTERRUPT                      257
+#define LOAD_CLOSURE                           258
+#define LOAD_METHOD                            259
+#define LOAD_SUPER_METHOD                      260
+#define LOAD_ZERO_SUPER_ATTR                   261
+#define LOAD_ZERO_SUPER_METHOD                 262
+#define POP_BLOCK                              263
+#define SETUP_CLEANUP                          264
+#define SETUP_FINALLY                          265
+#define SETUP_WITH                             266
+#define STORE_FAST_MAYBE_NULL                  267
+
+#define HAVE_ARGUMENT                           45
+#define MIN_INSTRUMENTED_OPCODE                236
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_OPCODE_IDS_H */
diff --git a/Include/osdefs.h b/Include/osdefs.h
index 3243944a1483e9..2599e87a9d7c4b 100644
--- a/Include/osdefs.h
+++ b/Include/osdefs.h
@@ -1,51 +1,57 @@
+// Operating system dependencies.
+//
+// Define constants:
+//
+// - ALTSEP
+// - DELIM
+// - MAXPATHLEN
+// - SEP
+
 #ifndef Py_OSDEFS_H
 #define Py_OSDEFS_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-
-/* Operating system dependencies */
-
 #ifdef MS_WINDOWS
-#define SEP L'\\'
-#define ALTSEP L'/'
-#define MAXPATHLEN 256
-#define DELIM L';'
+#  define SEP L'\\'
+#  define ALTSEP L'/'
+#  define MAXPATHLEN 256
+#  define DELIM L';'
 #endif
 
 #ifdef __VXWORKS__
-#define DELIM L';'
+#  define DELIM L';'
 #endif
 
 /* Filename separator */
 #ifndef SEP
-#define SEP L'/'
+#  define SEP L'/'
 #endif
 
 /* Max pathname length */
 #ifdef __hpux
-#include <sys/param.h>
-#include <limits.h>
-#ifndef PATH_MAX
-#define PATH_MAX MAXPATHLEN
-#endif
+#  include <sys/param.h>
+#  include <limits.h>
+#  ifndef PATH_MAX
+#    define PATH_MAX MAXPATHLEN
+#  endif
 #endif
 
 #ifndef MAXPATHLEN
-#if defined(PATH_MAX) && PATH_MAX > 1024
-#define MAXPATHLEN PATH_MAX
-#else
-#define MAXPATHLEN 1024
-#endif
+#  if defined(PATH_MAX) && PATH_MAX > 1024
+#    define MAXPATHLEN PATH_MAX
+#  else
+#    define MAXPATHLEN 1024
+#  endif
 #endif
 
 /* Search path entry delimiter */
 #ifndef DELIM
-#define DELIM L':'
+#  define DELIM L':'
 #endif
 
 #ifdef __cplusplus
 }
 #endif
-#endif /* !Py_OSDEFS_H */
+#endif   // !Py_OSDEFS_H
diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index aaedd563a905e9..fad79ecfda7b28 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -17,13 +17,13 @@
 /* Version parsed out into numeric values */
 /*--start constants--*/
 #define PY_MAJOR_VERSION        3
-#define PY_MINOR_VERSION        12
+#define PY_MINOR_VERSION        13
 #define PY_MICRO_VERSION        0
 #define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_ALPHA
-#define PY_RELEASE_SERIAL       7
+#define PY_RELEASE_SERIAL       2
 
 /* Version as a string */
-#define PY_VERSION              "3.12.0a7+"
+#define PY_VERSION              "3.13.0a2+"
 /*--end constants--*/
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
diff --git a/Include/pyatomic.h b/Include/pyatomic.h
new file mode 100644
index 00000000000000..2ce2c81cf5251a
--- /dev/null
+++ b/Include/pyatomic.h
@@ -0,0 +1,16 @@
+#ifndef Py_ATOMIC_H
+#define Py_ATOMIC_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_ATOMIC_H
+#  include "cpython/pyatomic.h"
+#  undef Py_CPYTHON_ATOMIC_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif  /* !Py_ATOMIC_H */
diff --git a/Include/pycapsule.h b/Include/pycapsule.h
index 929a9a685259fb..666b9f86739670 100644
--- a/Include/pycapsule.h
+++ b/Include/pycapsule.h
@@ -52,7 +52,6 @@ PyAPI_FUNC(void *) PyCapsule_Import(
     const char *name,           /* UTF-8 encoded string */
     int no_block);
 
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index d089fa71779330..5d0028c116e2d8 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -1,13 +1,11 @@
+// Error handling definitions
+
 #ifndef Py_ERRORS_H
 #define Py_ERRORS_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include <stdarg.h>               // va_list
-
-/* Error handling definitions */
-
 PyAPI_FUNC(void) PyErr_SetNone(PyObject *);
 PyAPI_FUNC(void) PyErr_SetObject(PyObject *, PyObject *);
 PyAPI_FUNC(void) PyErr_SetString(
diff --git a/Include/pyhash.h b/Include/pyhash.h
index 182d223fab1cac..3e23e2758808d7 100644
--- a/Include/pyhash.h
+++ b/Include/pyhash.h
@@ -1,100 +1,10 @@
 #ifndef Py_HASH_H
-
 #define Py_HASH_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-/* Helpers for hash functions */
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(Py_hash_t) _Py_HashDouble(PyObject *, double);
-PyAPI_FUNC(Py_hash_t) _Py_HashPointer(const void*);
-// Similar to _Py_HashPointer(), but don't replace -1 with -2
-PyAPI_FUNC(Py_hash_t) _Py_HashPointerRaw(const void*);
-PyAPI_FUNC(Py_hash_t) _Py_HashBytes(const void*, Py_ssize_t);
-#endif
-
-/* Prime multiplier used in string and various other hashes. */
-#define _PyHASH_MULTIPLIER 1000003UL  /* 0xf4243 */
-
-/* Parameters used for the numeric hash implementation.  See notes for
-   _Py_HashDouble in Python/pyhash.c.  Numeric hashes are based on
-   reduction modulo the prime 2**_PyHASH_BITS - 1. */
-
-#if SIZEOF_VOID_P >= 8
-#  define _PyHASH_BITS 61
-#else
-#  define _PyHASH_BITS 31
-#endif
-
-#define _PyHASH_MODULUS (((size_t)1 << _PyHASH_BITS) - 1)
-#define _PyHASH_INF 314159
-#define _PyHASH_IMAG _PyHASH_MULTIPLIER
-
-
-/* hash secret
- *
- * memory layout on 64 bit systems
- *   cccccccc cccccccc cccccccc  uc -- unsigned char[24]
- *   pppppppp ssssssss ........  fnv -- two Py_hash_t
- *   k0k0k0k0 k1k1k1k1 ........  siphash -- two uint64_t
- *   ........ ........ ssssssss  djbx33a -- 16 bytes padding + one Py_hash_t
- *   ........ ........ eeeeeeee  pyexpat XML hash salt
- *
- * memory layout on 32 bit systems
- *   cccccccc cccccccc cccccccc  uc
- *   ppppssss ........ ........  fnv -- two Py_hash_t
- *   k0k0k0k0 k1k1k1k1 ........  siphash -- two uint64_t (*)
- *   ........ ........ ssss....  djbx33a -- 16 bytes padding + one Py_hash_t
- *   ........ ........ eeee....  pyexpat XML hash salt
- *
- * (*) The siphash member may not be available on 32 bit platforms without
- *     an unsigned int64 data type.
- */
-#ifndef Py_LIMITED_API
-typedef union {
-    /* ensure 24 bytes */
-    unsigned char uc[24];
-    /* two Py_hash_t for FNV */
-    struct {
-        Py_hash_t prefix;
-        Py_hash_t suffix;
-    } fnv;
-    /* two uint64 for SipHash24 */
-    struct {
-        uint64_t k0;
-        uint64_t k1;
-    } siphash;
-    /* a different (!) Py_hash_t for small string optimization */
-    struct {
-        unsigned char padding[16];
-        Py_hash_t suffix;
-    } djbx33a;
-    struct {
-        unsigned char padding[16];
-        Py_hash_t hashsalt;
-    } expat;
-} _Py_HashSecret_t;
-PyAPI_DATA(_Py_HashSecret_t) _Py_HashSecret;
-
-#ifdef Py_DEBUG
-PyAPI_DATA(int) _Py_HashSecret_Initialized;
-#endif
-
-
-/* hash function definition */
-typedef struct {
-    Py_hash_t (*const hash)(const void *, Py_ssize_t);
-    const char *name;
-    const int hash_bits;
-    const int seed_bits;
-} PyHash_FuncDef;
-
-PyAPI_FUNC(PyHash_FuncDef*) PyHash_GetFuncDef(void);
-#endif
-
-
-/* cutoff for small string DJBX33A optimization in range [1, cutoff).
+/* Cutoff for small string DJBX33A optimization in range [1, cutoff).
  *
  * About 50% of the strings in a typical Python application are smaller than
  * 6 to 7 chars. However DJBX33A is vulnerable to hash collision attacks.
@@ -112,7 +22,7 @@ PyAPI_FUNC(PyHash_FuncDef*) PyHash_GetFuncDef(void);
 #endif /* Py_HASH_CUTOFF */
 
 
-/* hash algorithm selection
+/* Hash algorithm selection
  *
  * The values for Py_HASH_* are hard-coded in the
  * configure script.
@@ -137,8 +47,13 @@ PyAPI_FUNC(PyHash_FuncDef*) PyHash_GetFuncDef(void);
 #  endif /* uint64_t && uint32_t && aligned */
 #endif /* Py_HASH_ALGORITHM */
 
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_HASH_H
+#  include "cpython/pyhash.h"
+#  undef Py_CPYTHON_HASH_H
+#endif
+
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* !Py_HASH_H */
+#endif  // !Py_HASH_H
diff --git a/Include/pylifecycle.h b/Include/pylifecycle.h
index e4c3b09c963fe8..c1e2bc5e323358 100644
--- a/Include/pylifecycle.h
+++ b/Include/pylifecycle.h
@@ -34,18 +34,12 @@ PyAPI_FUNC(int) Py_Main(int argc, wchar_t **argv);
 PyAPI_FUNC(int) Py_BytesMain(int argc, char **argv);
 
 /* In pathconfig.c */
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) Py_SetProgramName(const wchar_t *);
-PyAPI_FUNC(wchar_t *) Py_GetProgramName(void);
-
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) Py_SetPythonHome(const wchar_t *);
-PyAPI_FUNC(wchar_t *) Py_GetPythonHome(void);
-
-PyAPI_FUNC(wchar_t *) Py_GetProgramFullPath(void);
-
-PyAPI_FUNC(wchar_t *) Py_GetPrefix(void);
-PyAPI_FUNC(wchar_t *) Py_GetExecPrefix(void);
-PyAPI_FUNC(wchar_t *) Py_GetPath(void);
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) Py_SetPath(const wchar_t *);
+Py_DEPRECATED(3.13) PyAPI_FUNC(wchar_t *) Py_GetProgramName(void);
+Py_DEPRECATED(3.13) PyAPI_FUNC(wchar_t *) Py_GetPythonHome(void);
+Py_DEPRECATED(3.13) PyAPI_FUNC(wchar_t *) Py_GetProgramFullPath(void);
+Py_DEPRECATED(3.13) PyAPI_FUNC(wchar_t *) Py_GetPrefix(void);
+Py_DEPRECATED(3.13) PyAPI_FUNC(wchar_t *) Py_GetExecPrefix(void);
+Py_DEPRECATED(3.13) PyAPI_FUNC(wchar_t *) Py_GetPath(void);
 #ifdef MS_WINDOWS
 int _Py_CheckPython3(void);
 #endif
@@ -66,6 +60,10 @@ PyAPI_FUNC(PyOS_sighandler_t) PyOS_setsig(int, PyOS_sighandler_t);
 PyAPI_DATA(const unsigned long) Py_Version;
 #endif
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030D0000
+PyAPI_FUNC(int) Py_IsFinalizing(void);
+#endif
+
 #ifndef Py_LIMITED_API
 #  define Py_CPYTHON_PYLIFECYCLE_H
 #  include "cpython/pylifecycle.h"
diff --git a/Include/pymacconfig.h b/Include/pymacconfig.h
index 00459a03b980be..615abe103ca038 100644
--- a/Include/pymacconfig.h
+++ b/Include/pymacconfig.h
@@ -1,90 +1,91 @@
-#ifndef PYMACCONFIG_H
-#define PYMACCONFIG_H
-     /*
-      * This file moves some of the autoconf magic to compile-time
-      * when building on MacOSX. This is needed for building 4-way
-      * universal binaries and for 64-bit universal binaries because
-      * the values redefined below aren't configure-time constant but
-      * only compile-time constant in these scenarios.
-      */
+// This file moves some of the autoconf magic to compile-time when building on
+// macOS. This is needed for building 4-way universal binaries and for 64-bit
+// universal binaries because the values redefined below aren't configure-time
+// constant but only compile-time constant in these scenarios.
 
-#if defined(__APPLE__)
+#ifndef PY_MACCONFIG_H
+#define PY_MACCONFIG_H
+#ifdef __APPLE__
 
-# undef SIZEOF_LONG
-# undef SIZEOF_PTHREAD_T
-# undef SIZEOF_SIZE_T
-# undef SIZEOF_TIME_T
-# undef SIZEOF_VOID_P
-# undef SIZEOF__BOOL
-# undef SIZEOF_UINTPTR_T
-# undef SIZEOF_PTHREAD_T
-# undef WORDS_BIGENDIAN
-# undef DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754
-# undef DOUBLE_IS_BIG_ENDIAN_IEEE754
-# undef DOUBLE_IS_LITTLE_ENDIAN_IEEE754
-# undef HAVE_GCC_ASM_FOR_X87
+#undef ALIGNOF_MAX_ALIGN_T
+#undef SIZEOF_LONG
+#undef SIZEOF_LONG_DOUBLE
+#undef SIZEOF_PTHREAD_T
+#undef SIZEOF_SIZE_T
+#undef SIZEOF_TIME_T
+#undef SIZEOF_VOID_P
+#undef SIZEOF__BOOL
+#undef SIZEOF_UINTPTR_T
+#undef SIZEOF_PTHREAD_T
+#undef WORDS_BIGENDIAN
+#undef DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754
+#undef DOUBLE_IS_BIG_ENDIAN_IEEE754
+#undef DOUBLE_IS_LITTLE_ENDIAN_IEEE754
+#undef HAVE_GCC_ASM_FOR_X87
+#undef HAVE_GCC_ASM_FOR_X64
 
-#    undef VA_LIST_IS_ARRAY
-#    if defined(__LP64__) && defined(__x86_64__)
-#        define VA_LIST_IS_ARRAY 1
-#    endif
-
-#    undef HAVE_LARGEFILE_SUPPORT
-#    ifndef __LP64__
-#         define HAVE_LARGEFILE_SUPPORT 1
-#    endif
-
-#    undef SIZEOF_LONG
-#    ifdef __LP64__
-#        define SIZEOF__BOOL            1
-#        define SIZEOF__BOOL            1
-#        define SIZEOF_LONG             8
-#        define SIZEOF_PTHREAD_T        8
-#        define SIZEOF_SIZE_T           8
-#        define SIZEOF_TIME_T           8
-#        define SIZEOF_VOID_P           8
-#        define SIZEOF_UINTPTR_T        8
-#        define SIZEOF_PTHREAD_T        8
-#    else
-#        ifdef __ppc__
-#           define SIZEOF__BOOL         4
-#        else
-#           define SIZEOF__BOOL         1
-#        endif
-#        define SIZEOF_LONG             4
-#        define SIZEOF_PTHREAD_T        4
-#        define SIZEOF_SIZE_T           4
-#        define SIZEOF_TIME_T           4
-#        define SIZEOF_VOID_P           4
-#        define SIZEOF_UINTPTR_T        4
-#        define SIZEOF_PTHREAD_T        4
-#    endif
+#undef VA_LIST_IS_ARRAY
+#if defined(__LP64__) && defined(__x86_64__)
+#  define VA_LIST_IS_ARRAY 1
+#endif
 
-#    if defined(__LP64__)
-     /* MacOSX 10.4 (the first release to support 64-bit code
-      * at all) only supports 64-bit in the UNIX layer.
-      * Therefore suppress the toolbox-glue in 64-bit mode.
-      */
+#undef HAVE_LARGEFILE_SUPPORT
+#ifndef __LP64__
+#   define HAVE_LARGEFILE_SUPPORT 1
+#endif
 
-    /* In 64-bit mode setpgrp always has no arguments, in 32-bit
-     * mode that depends on the compilation environment
-     */
-#       undef SETPGRP_HAVE_ARG
+#undef SIZEOF_LONG
+#ifdef __LP64__
+#  define SIZEOF__BOOL            1
+#  define SIZEOF__BOOL            1
+#  define SIZEOF_LONG             8
+#  define SIZEOF_PTHREAD_T        8
+#  define SIZEOF_SIZE_T           8
+#  define SIZEOF_TIME_T           8
+#  define SIZEOF_VOID_P           8
+#  define SIZEOF_UINTPTR_T        8
+#  define SIZEOF_PTHREAD_T        8
+#else
+#  ifdef __ppc__
+#     define SIZEOF__BOOL         4
+#  else
+#     define SIZEOF__BOOL         1
+#  endif
+#  define SIZEOF_LONG             4
+#  define SIZEOF_PTHREAD_T        4
+#  define SIZEOF_SIZE_T           4
+#  define SIZEOF_TIME_T           4
+#  define SIZEOF_VOID_P           4
+#  define SIZEOF_UINTPTR_T        4
+#  define SIZEOF_PTHREAD_T        4
+#endif
 
-#    endif
+// macOS 10.4 (the first release to support 64-bit code
+// at all) only supports 64-bit in the UNIX layer.
+// Therefore suppress the toolbox-glue in 64-bit mode.
+//
+// In 64-bit mode setpgrp always has no arguments, in 32-bit
+// mode that depends on the compilation environment
+#if defined(__LP64__)
+#   undef SETPGRP_HAVE_ARG
+#endif
 
 #ifdef __BIG_ENDIAN__
-#define WORDS_BIGENDIAN 1
-#define DOUBLE_IS_BIG_ENDIAN_IEEE754
+#  define WORDS_BIGENDIAN 1
+#  define DOUBLE_IS_BIG_ENDIAN_IEEE754
 #else
-#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754
-#endif /* __BIG_ENDIAN */
-
-#ifdef __i386__
-# define HAVE_GCC_ASM_FOR_X87
+#  define DOUBLE_IS_LITTLE_ENDIAN_IEEE754
 #endif
 
+#if defined(__i386__) || defined(__x86_64__)
+#  define HAVE_GCC_ASM_FOR_X87
+#  define ALIGNOF_MAX_ALIGN_T 16
+#  define HAVE_GCC_ASM_FOR_X64 1
+#  define SIZEOF_LONG_DOUBLE 16
+#else
+#  define ALIGNOF_MAX_ALIGN_T 8
+#  define SIZEOF_LONG_DOUBLE 8
+#endif
 
-#endif /* defined(_APPLE__) */
-
-#endif /* PYMACCONFIG_H */
+#endif   // __APPLE__
+#endif   // !PY_MACCONFIG_H
diff --git a/Include/pymacro.h b/Include/pymacro.h
index 342d2a7b844adf..9d264fe6eea1d4 100644
--- a/Include/pymacro.h
+++ b/Include/pymacro.h
@@ -118,6 +118,15 @@
  */
 #if defined(__GNUC__) || defined(__clang__)
 #  define Py_UNUSED(name) _unused_ ## name __attribute__((unused))
+#elif defined(_MSC_VER)
+   // Disable warning C4100: unreferenced formal parameter,
+   // declare the parameter,
+   // restore old compiler warnings.
+#  define Py_UNUSED(name) \
+        __pragma(warning(push)) \
+        __pragma(warning(suppress: 4100)) \
+        _unused_ ## name \
+        __pragma(warning(pop))
 #else
 #  define Py_UNUSED(name) _unused_ ## name
 #endif
diff --git a/Include/pymem.h b/Include/pymem.h
index e882645757bfd3..a80da99e1dd7fc 100644
--- a/Include/pymem.h
+++ b/Include/pymem.h
@@ -1,12 +1,8 @@
-/* The PyMem_ family:  low-level memory allocation interfaces.
-   See objimpl.h for the PyObject_ memory family.
-*/
+// The PyMem_ family:  low-level memory allocation interfaces.
+// See objimpl.h for the PyObject_ memory family.
 
 #ifndef Py_PYMEM_H
 #define Py_PYMEM_H
-
-#include "pyport.h"
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -91,6 +87,17 @@ PyAPI_FUNC(void) PyMem_Free(void *ptr);
 #define PyMem_DEL(p)              PyMem_Free((p))
 
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+// Memory allocator which doesn't require the GIL to be held.
+// Usually, it's just a thin wrapper to functions of the standard C library:
+// malloc(), calloc(), realloc() and free(). The difference is that
+// tracemalloc can track these memory allocations.
+PyAPI_FUNC(void *) PyMem_RawMalloc(size_t size);
+PyAPI_FUNC(void *) PyMem_RawCalloc(size_t nelem, size_t elsize);
+PyAPI_FUNC(void *) PyMem_RawRealloc(void *ptr, size_t new_size);
+PyAPI_FUNC(void) PyMem_RawFree(void *ptr);
+#endif
+
 #ifndef Py_LIMITED_API
 #  define Py_CPYTHON_PYMEM_H
 #  include "cpython/pymem.h"
@@ -100,5 +107,4 @@ PyAPI_FUNC(void) PyMem_Free(void *ptr);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* !Py_PYMEM_H */
+#endif   // !Py_PYMEM_H
diff --git a/Include/pyport.h b/Include/pyport.h
index d7c6ae64f2bf2f..328471085f959d 100644
--- a/Include/pyport.h
+++ b/Include/pyport.h
@@ -1,13 +1,8 @@
 #ifndef Py_PYPORT_H
 #define Py_PYPORT_H
 
-#include "pyconfig.h" /* include for defines */
-
-#include <inttypes.h>
-
-#include <limits.h>
 #ifndef UCHAR_MAX
-#  error "limits.h must define UCHAR_MAX"
+#  error "<limits.h> header must define UCHAR_MAX"
 #endif
 #if UCHAR_MAX != 255
 #  error "Python's source code assumes C's unsigned char is an 8-bit type"
@@ -24,9 +19,10 @@
 #define _Py_CAST(type, expr) ((type)(expr))
 
 // Static inline functions should use _Py_NULL rather than using directly NULL
-// to prevent C++ compiler warnings. On C++11 and newer, _Py_NULL is defined as
-// nullptr.
-#if defined(__cplusplus) && __cplusplus >= 201103
+// to prevent C++ compiler warnings. On C23 and newer and on C++11 and newer,
+// _Py_NULL is defined as nullptr.
+#if (defined (__STDC_VERSION__) && __STDC_VERSION__ > 201710L) \
+        || (defined(__cplusplus) && __cplusplus >= 201103)
 #  define _Py_NULL nullptr
 #else
 #  define _Py_NULL NULL
@@ -188,68 +184,6 @@ typedef Py_ssize_t Py_ssize_clean_t;
 #  define Py_MEMCPY memcpy
 #endif
 
-#ifdef HAVE_IEEEFP_H
-#include <ieeefp.h>  /* needed for 'finite' declaration on some platforms */
-#endif
-
-#include <math.h> /* Moved here from the math section, before extern "C" */
-
-/********************************************
- * WRAPPER FOR <time.h> and/or <sys/time.h> *
- ********************************************/
-
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <time.h>
-
-/******************************
- * WRAPPER FOR <sys/select.h> *
- ******************************/
-
-/* NB caller must include <sys/types.h> */
-
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif /* !HAVE_SYS_SELECT_H */
-
-/*******************************
- * stat() and fstat() fiddling *
- *******************************/
-
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#elif defined(HAVE_STAT_H)
-#include <stat.h>
-#endif
-
-#ifndef S_IFMT
-/* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */
-#define S_IFMT 0170000
-#endif
-
-#ifndef S_IFLNK
-/* Windows doesn't define S_IFLNK but posixmodule.c maps
- * IO_REPARSE_TAG_SYMLINK to S_IFLNK */
-#  define S_IFLNK 0120000
-#endif
-
-#ifndef S_ISREG
-#define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
-#endif
-
-#ifndef S_ISDIR
-#define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
-#endif
-
-#ifndef S_ISCHR
-#define S_ISCHR(x) (((x) & S_IFMT) == S_IFCHR)
-#endif
-
-#ifndef S_ISLNK
-#define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
-#endif
-
 #ifdef __cplusplus
 /* Move this down here since some C++ #include's don't like to be included
    inside an extern "C" */
@@ -421,141 +355,15 @@ extern "C" {
 #  define Py_NO_INLINE
 #endif
 
-/**************************************************************************
-Prototypes that are missing from the standard include files on some systems
-(and possibly only some versions of such systems.)
-
-Please be conservative with adding new ones, document them and enclose them
-in platform-specific #ifdefs.
-**************************************************************************/
-
-#ifdef SOLARIS
-/* Unchecked */
-extern int gethostname(char *, int);
-#endif
-
-#ifdef HAVE__GETPTY
-#include <sys/types.h>          /* we need to import mode_t */
-extern char * _getpty(int *, int, mode_t, int);
-#endif
-
-/* On QNX 6, struct termio must be declared by including sys/termio.h
-   if TCGETA, TCSETA, TCSETAW, or TCSETAF are used.  sys/termio.h must
-   be included before termios.h or it will generate an error. */
-#if defined(HAVE_SYS_TERMIO_H) && !defined(__hpux)
-#include <sys/termio.h>
-#endif
-
-
-/* On 4.4BSD-descendants, ctype functions serves the whole range of
- * wchar_t character set rather than single byte code points only.
- * This characteristic can break some operations of string object
- * including str.upper() and str.split() on UTF-8 locales.  This
- * workaround was provided by Tim Robbins of FreeBSD project.
- */
-
-#if defined(__APPLE__)
-#  define _PY_PORT_CTYPE_UTF8_ISSUE
-#endif
-
-#ifdef _PY_PORT_CTYPE_UTF8_ISSUE
-#ifndef __cplusplus
-   /* The workaround below is unsafe in C++ because
-    * the <locale> defines these symbols as real functions,
-    * with a slightly different signature.
-    * See issue #10910
-    */
-#include <ctype.h>
-#include <wctype.h>
-#undef isalnum
-#define isalnum(c) iswalnum(btowc(c))
-#undef isalpha
-#define isalpha(c) iswalpha(btowc(c))
-#undef islower
-#define islower(c) iswlower(btowc(c))
-#undef isspace
-#define isspace(c) iswspace(btowc(c))
-#undef isupper
-#define isupper(c) iswupper(btowc(c))
-#undef tolower
-#define tolower(c) towlower(btowc(c))
-#undef toupper
-#define toupper(c) towupper(btowc(c))
-#endif
-#endif
-
-
-/* Declarations for symbol visibility.
-
-  PyAPI_FUNC(type): Declares a public Python API function and return type
-  PyAPI_DATA(type): Declares public Python data and its type
-  PyMODINIT_FUNC:   A Python module init function.  If these functions are
-                    inside the Python core, they are private to the core.
-                    If in an extension module, it may be declared with
-                    external linkage depending on the platform.
-
-  As a number of platforms support/require "__declspec(dllimport/dllexport)",
-  we support a HAVE_DECLSPEC_DLL macro to save duplication.
-*/
-
-/*
-  All windows ports, except cygwin, are handled in PC/pyconfig.h.
-
-  Cygwin is the only other autoconf platform requiring special
-  linkage handling and it uses __declspec().
-*/
-#if defined(__CYGWIN__)
-#       define HAVE_DECLSPEC_DLL
-#endif
-
 #include "exports.h"
 
-/* only get special linkage if built as shared or platform is Cygwin */
-#if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
-#       if defined(HAVE_DECLSPEC_DLL)
-#               if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#                       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
-#                       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
-        /* module init functions inside the core need no external linkage */
-        /* except for Cygwin to handle embedding */
-#                       if defined(__CYGWIN__)
-#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
-#                       else /* __CYGWIN__ */
-#                               define PyMODINIT_FUNC PyObject*
-#                       endif /* __CYGWIN__ */
-#               else /* Py_BUILD_CORE */
-        /* Building an extension module, or an embedded situation */
-        /* public Python functions and data are imported */
-        /* Under Cygwin, auto-import functions to prevent compilation */
-        /* failures similar to those described at the bottom of 4.1: */
-        /* http://docs.python.org/extending/windows.html#a-cookbook-approach */
-#                       if !defined(__CYGWIN__)
-#                               define PyAPI_FUNC(RTYPE) Py_IMPORTED_SYMBOL RTYPE
-#                       endif /* !__CYGWIN__ */
-#                       define PyAPI_DATA(RTYPE) extern Py_IMPORTED_SYMBOL RTYPE
-        /* module init functions outside the core must be exported */
-#                       if defined(__cplusplus)
-#                               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
-#                       else /* __cplusplus */
-#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
-#                       endif /* __cplusplus */
-#               endif /* Py_BUILD_CORE */
-#       endif /* HAVE_DECLSPEC_DLL */
-#endif /* Py_ENABLE_SHARED */
-
-/* If no external linkage macros defined by now, create defaults */
-#ifndef PyAPI_FUNC
-#       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
-#endif
-#ifndef PyAPI_DATA
-#       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
-#endif
-#ifndef PyMODINIT_FUNC
-#       if defined(__cplusplus)
-#               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
-#       else /* __cplusplus */
-#               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
-#       endif /* __cplusplus */
+#ifdef Py_LIMITED_API
+   // The internal C API must not be used with the limited C API: make sure
+   // that Py_BUILD_CORE macro is not defined in this case. These 3 macros are
+   // used by exports.h, so only undefine them afterwards.
+#  undef Py_BUILD_CORE
+#  undef Py_BUILD_CORE_BUILTIN
+#  undef Py_BUILD_CORE_MODULE
 #endif
 
 /* limits.h constants that may be missing */
@@ -662,6 +470,14 @@ extern char * _getpty(int *, int, mode_t, int);
 #  define WITH_THREAD
 #endif
 
+/* Some WebAssembly platforms do not provide a working pthread implementation.
+ * Thread support is stubbed and any attempt to create a new thread fails.
+ */
+#if (!defined(HAVE_PTHREAD_STUBS) && \
+      (!defined(__EMSCRIPTEN__) || defined(__EMSCRIPTEN_PTHREADS__)))
+#  define Py_CAN_START_THREADS 1
+#endif
+
 #ifdef WITH_THREAD
 #  ifdef Py_BUILD_CORE
 #    ifdef HAVE_THREAD_LOCAL
@@ -683,12 +499,6 @@ extern char * _getpty(int *, int, mode_t, int);
 #  endif
 #endif
 
-/* Check that ALT_SOABI is consistent with Py_TRACE_REFS:
-   ./configure --with-trace-refs should must be used to define Py_TRACE_REFS */
-#if defined(ALT_SOABI) && defined(Py_TRACE_REFS)
-#  error "Py_TRACE_REFS ABI is not compatible with release and debug ABI"
-#endif
-
 #if defined(__ANDROID__) || defined(__VXWORKS__)
    // Use UTF-8 as the locale encoding, ignore the LC_CTYPE locale.
    // See _Py_GetLocaleEncoding(), PyUnicode_DecodeLocale()
@@ -776,4 +586,16 @@ extern char * _getpty(int *, int, mode_t, int);
 #   define ALIGNOF_MAX_ALIGN_T _Alignof(long double)
 #endif
 
+#ifndef PY_CXX_CONST
+#  ifdef __cplusplus
+#    define PY_CXX_CONST const
+#  else
+#    define PY_CXX_CONST
+#  endif
+#endif
+
+#if defined(__sgi) && !defined(_SGI_MP_SOURCE)
+#  define _SGI_MP_SOURCE
+#endif
+
 #endif /* Py_PYPORT_H */
diff --git a/Include/pystate.h b/Include/pystate.h
index e6b4de979c87b8..727b8fbfffe0e6 100644
--- a/Include/pystate.h
+++ b/Include/pystate.h
@@ -56,7 +56,7 @@ PyAPI_FUNC(void) PyThreadState_Delete(PyThreadState *);
 
    The caller must hold the GIL.
 
-   See also _PyThreadState_UncheckedGet() and _PyThreadState_GET(). */
+   See also PyThreadState_GetUnchecked() and _PyThreadState_GET(). */
 PyAPI_FUNC(PyThreadState *) PyThreadState_Get(void);
 
 // Alias to PyThreadState_Get()
diff --git a/Include/pystats.h b/Include/pystats.h
index 4b961bad2a43e4..acfa32201711e0 100644
--- a/Include/pystats.h
+++ b/Include/pystats.h
@@ -1,4 +1,9 @@
-
+// Statistics on Python performance (public API).
+//
+// Define _Py_INCREF_STAT_INC() and _Py_DECREF_STAT_INC() used by Py_INCREF()
+// and Py_DECREF().
+//
+// See Include/cpython/pystats.h for the full API.
 
 #ifndef Py_PYSTATS_H
 #define Py_PYSTATS_H
@@ -6,105 +11,16 @@
 extern "C" {
 #endif
 
-#ifdef Py_STATS
-
-#define SPECIALIZATION_FAILURE_KINDS 36
-
-/* Stats for determining who is calling PyEval_EvalFrame */
-#define EVAL_CALL_TOTAL 0
-#define EVAL_CALL_VECTOR 1
-#define EVAL_CALL_GENERATOR 2
-#define EVAL_CALL_LEGACY 3
-#define EVAL_CALL_FUNCTION_VECTORCALL 4
-#define EVAL_CALL_BUILD_CLASS 5
-#define EVAL_CALL_SLOT 6
-#define EVAL_CALL_FUNCTION_EX 7
-#define EVAL_CALL_API 8
-#define EVAL_CALL_METHOD 9
-
-#define EVAL_CALL_KINDS 10
-
-typedef struct _specialization_stats {
-    uint64_t success;
-    uint64_t failure;
-    uint64_t hit;
-    uint64_t deferred;
-    uint64_t miss;
-    uint64_t deopt;
-    uint64_t failure_kinds[SPECIALIZATION_FAILURE_KINDS];
-} SpecializationStats;
-
-typedef struct _opcode_stats {
-    SpecializationStats specialization;
-    uint64_t execution_count;
-    uint64_t pair_count[256];
-} OpcodeStats;
-
-typedef struct _call_stats {
-    uint64_t inlined_py_calls;
-    uint64_t pyeval_calls;
-    uint64_t frames_pushed;
-    uint64_t frame_objects_created;
-    uint64_t eval_calls[EVAL_CALL_KINDS];
-} CallStats;
-
-typedef struct _object_stats {
-    uint64_t increfs;
-    uint64_t decrefs;
-    uint64_t interpreter_increfs;
-    uint64_t interpreter_decrefs;
-    uint64_t allocations;
-    uint64_t allocations512;
-    uint64_t allocations4k;
-    uint64_t allocations_big;
-    uint64_t frees;
-    uint64_t to_freelist;
-    uint64_t from_freelist;
-    uint64_t new_values;
-    uint64_t dict_materialized_on_request;
-    uint64_t dict_materialized_new_key;
-    uint64_t dict_materialized_too_big;
-    uint64_t dict_materialized_str_subclass;
-    uint64_t type_cache_hits;
-    uint64_t type_cache_misses;
-    uint64_t type_cache_dunder_hits;
-    uint64_t type_cache_dunder_misses;
-    uint64_t type_cache_collisions;
-} ObjectStats;
-
-typedef struct _stats {
-    OpcodeStats opcode_stats[256];
-    CallStats call_stats;
-    ObjectStats object_stats;
-} PyStats;
-
-
-PyAPI_DATA(PyStats) _py_stats_struct;
-PyAPI_DATA(PyStats *) _py_stats;
-
-extern void _Py_StatsClear(void);
-extern void _Py_PrintSpecializationStats(int to_file);
-
-#ifdef _PY_INTERPRETER
-
-#define _Py_INCREF_STAT_INC() do { if (_py_stats) _py_stats->object_stats.interpreter_increfs++; } while (0)
-#define _Py_DECREF_STAT_INC() do { if (_py_stats) _py_stats->object_stats.interpreter_decrefs++; } while (0)
-
-#else
-
-#define _Py_INCREF_STAT_INC() do { if (_py_stats) _py_stats->object_stats.increfs++; } while (0)
-#define _Py_DECREF_STAT_INC() do { if (_py_stats) _py_stats->object_stats.decrefs++; } while (0)
-
-#endif
-
+#if defined(Py_STATS) && !defined(Py_LIMITED_API)
+#  define Py_CPYTHON_PYSTATS_H
+#  include "cpython/pystats.h"
+#  undef Py_CPYTHON_PYSTATS_H
 #else
-
-#define _Py_INCREF_STAT_INC() ((void)0)
-#define _Py_DECREF_STAT_INC() ((void)0)
-
+#  define _Py_INCREF_STAT_INC() ((void)0)
+#  define _Py_DECREF_STAT_INC() ((void)0)
 #endif  // !Py_STATS
 
 #ifdef __cplusplus
 }
 #endif
-#endif /* !Py_PYSTATs_H */
+#endif   // !Py_PYSTATS_H
diff --git a/Include/pystrtod.h b/Include/pystrtod.h
index fa056d17b6395f..e83d245eb623af 100644
--- a/Include/pystrtod.h
+++ b/Include/pystrtod.h
@@ -18,15 +18,6 @@ PyAPI_FUNC(char *) PyOS_double_to_string(double val,
                                          int flags,
                                          int *type);
 
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(PyObject *) _Py_string_to_number_with_underscores(
-    const char *str, Py_ssize_t len, const char *what, PyObject *obj, void *arg,
-    PyObject *(*innerfunc)(const char *, Py_ssize_t, void *));
-
-PyAPI_FUNC(double) _Py_parse_inf_or_nan(const char *p, char **endptr);
-#endif
-
-
 /* PyOS_double_to_string's "flags" parameter can be set to 0 or more of: */
 #define Py_DTSF_SIGN      0x01 /* always add the sign */
 #define Py_DTSF_ADD_DOT_0 0x02 /* if the result is an integer add ".0" */
diff --git a/Include/pythread.h b/Include/pythread.h
index 63714437c496b7..a3216c51d66165 100644
--- a/Include/pythread.h
+++ b/Include/pythread.h
@@ -21,7 +21,8 @@ PyAPI_FUNC(void) _Py_NO_RETURN PyThread_exit_thread(void);
 PyAPI_FUNC(unsigned long) PyThread_get_thread_ident(void);
 
 #if (defined(__APPLE__) || defined(__linux__) || defined(_WIN32) \
-     || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
+     || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \
+     || defined(__OpenBSD__) || defined(__NetBSD__) \
      || defined(__DragonFly__) || defined(_AIX))
 #define PY_HAVE_THREAD_NATIVE_ID
 PyAPI_FUNC(unsigned long) PyThread_get_thread_native_id(void);
@@ -33,42 +34,18 @@ PyAPI_FUNC(int) PyThread_acquire_lock(PyThread_type_lock, int);
 #define WAIT_LOCK       1
 #define NOWAIT_LOCK     0
 
-/* PY_TIMEOUT_T is the integral type used to specify timeouts when waiting
-   on a lock (see PyThread_acquire_lock_timed() below).
-   PY_TIMEOUT_MAX is the highest usable value (in microseconds) of that
-   type, and depends on the system threading API.
-
-   NOTE: this isn't the same value as `_thread.TIMEOUT_MAX`.  The _thread
-   module exposes a higher-level API, with timeouts expressed in seconds
-   and floating-point numbers allowed.
-*/
+// PY_TIMEOUT_T is the integral type used to specify timeouts when waiting
+// on a lock (see PyThread_acquire_lock_timed() below).
 #define PY_TIMEOUT_T long long
 
-#if defined(_POSIX_THREADS)
-   /* PyThread_acquire_lock_timed() uses _PyTime_FromNanoseconds(us * 1000),
-      convert microseconds to nanoseconds. */
-#  define PY_TIMEOUT_MAX (LLONG_MAX / 1000)
-#elif defined (NT_THREADS)
-   // WaitForSingleObject() accepts timeout in milliseconds in the range
-   // [0; 0xFFFFFFFE] (DWORD type). INFINITE value (0xFFFFFFFF) means no
-   // timeout. 0xFFFFFFFE milliseconds is around 49.7 days.
-#  if 0xFFFFFFFELL * 1000 < LLONG_MAX
-#    define PY_TIMEOUT_MAX (0xFFFFFFFELL * 1000)
-#  else
-#    define PY_TIMEOUT_MAX LLONG_MAX
-#  endif
-#else
-#  define PY_TIMEOUT_MAX LLONG_MAX
-#endif
-
 
 /* If microseconds == 0, the call is non-blocking: it returns immediately
    even when the lock can't be acquired.
    If microseconds > 0, the call waits up to the specified duration.
    If microseconds < 0, the call waits until success (or abnormal failure)
 
-   microseconds must be less than PY_TIMEOUT_MAX. Behaviour otherwise is
-   undefined.
+   If *microseconds* is greater than PY_TIMEOUT_MAX, clamp the timeout to
+   PY_TIMEOUT_MAX microseconds.
 
    If intr_flag is true and the acquire is interrupted by a signal, then the
    call will return PY_LOCK_INTR.  The caller may reattempt to acquire the
diff --git a/Include/structseq.h b/Include/structseq.h
index 96871155611958..29e24fee54e613 100644
--- a/Include/structseq.h
+++ b/Include/structseq.h
@@ -31,18 +31,15 @@ PyAPI_FUNC(PyTypeObject*) PyStructSequence_NewType(PyStructSequence_Desc *desc);
 
 PyAPI_FUNC(PyObject *) PyStructSequence_New(PyTypeObject* type);
 
+PyAPI_FUNC(void) PyStructSequence_SetItem(PyObject*, Py_ssize_t, PyObject*);
+PyAPI_FUNC(PyObject*) PyStructSequence_GetItem(PyObject*, Py_ssize_t);
+
 #ifndef Py_LIMITED_API
 typedef PyTupleObject PyStructSequence;
-
-/* Macro, *only* to be used to fill in brand new objects */
-#define PyStructSequence_SET_ITEM(op, i, v) PyTuple_SET_ITEM((op), (i), (v))
-
-#define PyStructSequence_GET_ITEM(op, i) PyTuple_GET_ITEM((op), (i))
+#define PyStructSequence_SET_ITEM PyStructSequence_SetItem
+#define PyStructSequence_GET_ITEM PyStructSequence_GetItem
 #endif
 
-PyAPI_FUNC(void) PyStructSequence_SetItem(PyObject*, Py_ssize_t, PyObject*);
-PyAPI_FUNC(PyObject*) PyStructSequence_GetItem(PyObject*, Py_ssize_t);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/sysmodule.h b/Include/sysmodule.h
index b5087119b1cae7..7b14f72ee2e494 100644
--- a/Include/sysmodule.h
+++ b/Include/sysmodule.h
@@ -1,6 +1,3 @@
-
-/* System module interface */
-
 #ifndef Py_SYSMODULE_H
 #define Py_SYSMODULE_H
 #ifdef __cplusplus
@@ -10,10 +7,6 @@ extern "C" {
 PyAPI_FUNC(PyObject *) PySys_GetObject(const char *);
 PyAPI_FUNC(int) PySys_SetObject(const char *, PyObject *);
 
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) PySys_SetArgv(int, wchar_t **);
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) PySys_SetArgvEx(int, wchar_t **, int);
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) PySys_SetPath(const wchar_t *);
-
 PyAPI_FUNC(void) PySys_WriteStdout(const char *format, ...)
                  Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
 PyAPI_FUNC(void) PySys_WriteStderr(const char *format, ...)
@@ -21,14 +14,21 @@ PyAPI_FUNC(void) PySys_WriteStderr(const char *format, ...)
 PyAPI_FUNC(void) PySys_FormatStdout(const char *format, ...);
 PyAPI_FUNC(void) PySys_FormatStderr(const char *format, ...);
 
-PyAPI_FUNC(void) PySys_ResetWarnOptions(void);
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) PySys_AddWarnOption(const wchar_t *);
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) PySys_AddWarnOptionUnicode(PyObject *);
-Py_DEPRECATED(3.11) PyAPI_FUNC(int) PySys_HasWarnOptions(void);
+Py_DEPRECATED(3.13) PyAPI_FUNC(void) PySys_ResetWarnOptions(void);
 
-Py_DEPRECATED(3.11) PyAPI_FUNC(void) PySys_AddXOption(const wchar_t *);
 PyAPI_FUNC(PyObject *) PySys_GetXOptions(void);
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
+PyAPI_FUNC(int) PySys_Audit(
+    const char *event,
+    const char *argFormat,
+    ...);
+
+PyAPI_FUNC(int) PySys_AuditTuple(
+    const char *event,
+    PyObject *args);
+#endif
+
 #ifndef Py_LIMITED_API
 #  define Py_CPYTHON_SYSMODULE_H
 #  include "cpython/sysmodule.h"
diff --git a/Include/tracemalloc.h b/Include/tracemalloc.h
deleted file mode 100644
index bd14217c199c3c..00000000000000
--- a/Include/tracemalloc.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef Py_TRACEMALLOC_H
-#define Py_TRACEMALLOC_H
-
-#ifndef Py_LIMITED_API
-/* Track an allocated memory block in the tracemalloc module.
-   Return 0 on success, return -1 on error (failed to allocate memory to store
-   the trace).
-
-   Return -2 if tracemalloc is disabled.
-
-   If memory block is already tracked, update the existing trace. */
-PyAPI_FUNC(int) PyTraceMalloc_Track(
-    unsigned int domain,
-    uintptr_t ptr,
-    size_t size);
-
-/* Untrack an allocated memory block in the tracemalloc module.
-   Do nothing if the block was not tracked.
-
-   Return -2 if tracemalloc is disabled, otherwise return 0. */
-PyAPI_FUNC(int) PyTraceMalloc_Untrack(
-    unsigned int domain,
-    uintptr_t ptr);
-
-/* Get the traceback where a memory block was allocated.
-
-   Return a tuple of (filename: str, lineno: int) tuples.
-
-   Return None if the tracemalloc module is disabled or if the memory block
-   is not tracked by tracemalloc.
-
-   Raise an exception and return NULL on error. */
-PyAPI_FUNC(PyObject*) _PyTraceMalloc_GetTraceback(
-    unsigned int domain,
-    uintptr_t ptr);
-#endif
-
-#endif /* !Py_TRACEMALLOC_H */
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 5839c747a29275..dee00715b3c51d 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -1,8 +1,6 @@
 #ifndef Py_UNICODEOBJECT_H
 #define Py_UNICODEOBJECT_H
 
-#include <stdarg.h>               // va_list
-
 /*
 
 Unicode implementation based on original code by Fredrik Lundh,
@@ -55,8 +53,6 @@ Copyright (c) Corporation for National Research Initiatives.
  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  * -------------------------------------------------------------------- */
 
-#include <ctype.h>
-
 /* === Internal API ======================================================= */
 
 /* --- Internal Unicode Format -------------------------------------------- */
@@ -93,10 +89,6 @@ Copyright (c) Corporation for National Research Initiatives.
 # endif
 #endif
 
-#ifdef HAVE_WCHAR_H
-#  include <wchar.h>
-#endif
-
 /* Py_UCS4 and Py_UCS2 are typedefs for the respective
    unicode representations. */
 typedef uint32_t Py_UCS4;
@@ -965,6 +957,15 @@ PyAPI_FUNC(int) PyUnicode_CompareWithASCIIString(
     const char *right           /* ASCII-encoded string */
     );
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030D0000
+/* Compare a Unicode object with UTF-8 encoded C string.
+   Return 1 if they are equal, or 0 otherwise.
+   This function does not raise exceptions. */
+
+PyAPI_FUNC(int) PyUnicode_EqualToUTF8(PyObject *, const char *);
+PyAPI_FUNC(int) PyUnicode_EqualToUTF8AndSize(PyObject *, const char *, Py_ssize_t);
+#endif
+
 /* Rich compare two strings and return one of the following:
 
    - NULL in case an exception was raised
diff --git a/Include/weakrefobject.h b/Include/weakrefobject.h
index 8e1fa1b9286a77..727ba6934bbacb 100644
--- a/Include/weakrefobject.h
+++ b/Include/weakrefobject.h
@@ -27,7 +27,8 @@ PyAPI_FUNC(PyObject *) PyWeakref_NewRef(PyObject *ob,
                                         PyObject *callback);
 PyAPI_FUNC(PyObject *) PyWeakref_NewProxy(PyObject *ob,
                                           PyObject *callback);
-PyAPI_FUNC(PyObject *) PyWeakref_GetObject(PyObject *ref);
+Py_DEPRECATED(3.13) PyAPI_FUNC(PyObject *) PyWeakref_GetObject(PyObject *ref);
+PyAPI_FUNC(int) PyWeakref_GetRef(PyObject *ref, PyObject **pobj);
 
 
 #ifndef Py_LIMITED_API
diff --git a/Lib/_compat_pickle.py b/Lib/_compat_pickle.py
index 65a94b6b1bdfd5..439f8c02f4b586 100644
--- a/Lib/_compat_pickle.py
+++ b/Lib/_compat_pickle.py
@@ -22,7 +22,6 @@
     'tkMessageBox': 'tkinter.messagebox',
     'ScrolledText': 'tkinter.scrolledtext',
     'Tkconstants': 'tkinter.constants',
-    'Tix': 'tkinter.tix',
     'ttk': 'tkinter.ttk',
     'Tkinter': 'tkinter',
     'markupbase': '_markupbase',
diff --git a/Lib/_opcode_metadata.py b/Lib/_opcode_metadata.py
new file mode 100644
index 00000000000000..5dd06ae487dfcf
--- /dev/null
+++ b/Lib/_opcode_metadata.py
@@ -0,0 +1,335 @@
+# This file is generated by Tools/cases_generator/generate_cases.py
+# from:
+#   Python/bytecodes.c
+# Do not edit!
+
+_specializations = {
+    "RESUME": [
+        "RESUME_CHECK",
+    ],
+    "TO_BOOL": [
+        "TO_BOOL_ALWAYS_TRUE",
+        "TO_BOOL_BOOL",
+        "TO_BOOL_INT",
+        "TO_BOOL_LIST",
+        "TO_BOOL_NONE",
+        "TO_BOOL_STR",
+    ],
+    "BINARY_OP": [
+        "BINARY_OP_MULTIPLY_INT",
+        "BINARY_OP_ADD_INT",
+        "BINARY_OP_SUBTRACT_INT",
+        "BINARY_OP_MULTIPLY_FLOAT",
+        "BINARY_OP_ADD_FLOAT",
+        "BINARY_OP_SUBTRACT_FLOAT",
+        "BINARY_OP_ADD_UNICODE",
+    ],
+    "BINARY_SUBSCR": [
+        "BINARY_SUBSCR_DICT",
+        "BINARY_SUBSCR_GETITEM",
+        "BINARY_SUBSCR_LIST_INT",
+        "BINARY_SUBSCR_STR_INT",
+        "BINARY_SUBSCR_TUPLE_INT",
+    ],
+    "STORE_SUBSCR": [
+        "STORE_SUBSCR_DICT",
+        "STORE_SUBSCR_LIST_INT",
+    ],
+    "SEND": [
+        "SEND_GEN",
+    ],
+    "UNPACK_SEQUENCE": [
+        "UNPACK_SEQUENCE_TWO_TUPLE",
+        "UNPACK_SEQUENCE_TUPLE",
+        "UNPACK_SEQUENCE_LIST",
+    ],
+    "STORE_ATTR": [
+        "STORE_ATTR_INSTANCE_VALUE",
+        "STORE_ATTR_SLOT",
+        "STORE_ATTR_WITH_HINT",
+    ],
+    "LOAD_GLOBAL": [
+        "LOAD_GLOBAL_MODULE",
+        "LOAD_GLOBAL_BUILTIN",
+    ],
+    "LOAD_SUPER_ATTR": [
+        "LOAD_SUPER_ATTR_ATTR",
+        "LOAD_SUPER_ATTR_METHOD",
+    ],
+    "LOAD_ATTR": [
+        "LOAD_ATTR_INSTANCE_VALUE",
+        "LOAD_ATTR_MODULE",
+        "LOAD_ATTR_WITH_HINT",
+        "LOAD_ATTR_SLOT",
+        "LOAD_ATTR_CLASS",
+        "LOAD_ATTR_PROPERTY",
+        "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
+        "LOAD_ATTR_METHOD_WITH_VALUES",
+        "LOAD_ATTR_METHOD_NO_DICT",
+        "LOAD_ATTR_METHOD_LAZY_DICT",
+        "LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES",
+        "LOAD_ATTR_NONDESCRIPTOR_NO_DICT",
+    ],
+    "COMPARE_OP": [
+        "COMPARE_OP_FLOAT",
+        "COMPARE_OP_INT",
+        "COMPARE_OP_STR",
+    ],
+    "FOR_ITER": [
+        "FOR_ITER_LIST",
+        "FOR_ITER_TUPLE",
+        "FOR_ITER_RANGE",
+        "FOR_ITER_GEN",
+    ],
+    "CALL": [
+        "CALL_BOUND_METHOD_EXACT_ARGS",
+        "CALL_PY_EXACT_ARGS",
+        "CALL_PY_WITH_DEFAULTS",
+        "CALL_TYPE_1",
+        "CALL_STR_1",
+        "CALL_TUPLE_1",
+        "CALL_BUILTIN_CLASS",
+        "CALL_BUILTIN_O",
+        "CALL_BUILTIN_FAST",
+        "CALL_BUILTIN_FAST_WITH_KEYWORDS",
+        "CALL_LEN",
+        "CALL_ISINSTANCE",
+        "CALL_LIST_APPEND",
+        "CALL_METHOD_DESCRIPTOR_O",
+        "CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS",
+        "CALL_METHOD_DESCRIPTOR_NOARGS",
+        "CALL_METHOD_DESCRIPTOR_FAST",
+        "CALL_ALLOC_AND_ENTER_INIT",
+    ],
+}
+
+# An irregular case:
+_specializations["BINARY_OP"].append("BINARY_OP_INPLACE_ADD_UNICODE")
+
+_specialized_opmap = {
+    'BINARY_OP_INPLACE_ADD_UNICODE': 3,
+    'BINARY_OP_ADD_FLOAT': 150,
+    'BINARY_OP_ADD_INT': 151,
+    'BINARY_OP_ADD_UNICODE': 152,
+    'BINARY_OP_MULTIPLY_FLOAT': 153,
+    'BINARY_OP_MULTIPLY_INT': 154,
+    'BINARY_OP_SUBTRACT_FLOAT': 155,
+    'BINARY_OP_SUBTRACT_INT': 156,
+    'BINARY_SUBSCR_DICT': 157,
+    'BINARY_SUBSCR_GETITEM': 158,
+    'BINARY_SUBSCR_LIST_INT': 159,
+    'BINARY_SUBSCR_STR_INT': 160,
+    'BINARY_SUBSCR_TUPLE_INT': 161,
+    'CALL_ALLOC_AND_ENTER_INIT': 162,
+    'CALL_BOUND_METHOD_EXACT_ARGS': 163,
+    'CALL_BUILTIN_CLASS': 164,
+    'CALL_BUILTIN_FAST': 165,
+    'CALL_BUILTIN_FAST_WITH_KEYWORDS': 166,
+    'CALL_BUILTIN_O': 167,
+    'CALL_ISINSTANCE': 168,
+    'CALL_LEN': 169,
+    'CALL_LIST_APPEND': 170,
+    'CALL_METHOD_DESCRIPTOR_FAST': 171,
+    'CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS': 172,
+    'CALL_METHOD_DESCRIPTOR_NOARGS': 173,
+    'CALL_METHOD_DESCRIPTOR_O': 174,
+    'CALL_PY_EXACT_ARGS': 175,
+    'CALL_PY_WITH_DEFAULTS': 176,
+    'CALL_STR_1': 177,
+    'CALL_TUPLE_1': 178,
+    'CALL_TYPE_1': 179,
+    'COMPARE_OP_FLOAT': 180,
+    'COMPARE_OP_INT': 181,
+    'COMPARE_OP_STR': 182,
+    'FOR_ITER_GEN': 183,
+    'FOR_ITER_LIST': 184,
+    'FOR_ITER_RANGE': 185,
+    'FOR_ITER_TUPLE': 186,
+    'LOAD_ATTR_CLASS': 187,
+    'LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN': 188,
+    'LOAD_ATTR_INSTANCE_VALUE': 189,
+    'LOAD_ATTR_METHOD_LAZY_DICT': 190,
+    'LOAD_ATTR_METHOD_NO_DICT': 191,
+    'LOAD_ATTR_METHOD_WITH_VALUES': 192,
+    'LOAD_ATTR_MODULE': 193,
+    'LOAD_ATTR_NONDESCRIPTOR_NO_DICT': 194,
+    'LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES': 195,
+    'LOAD_ATTR_PROPERTY': 196,
+    'LOAD_ATTR_SLOT': 197,
+    'LOAD_ATTR_WITH_HINT': 198,
+    'LOAD_GLOBAL_BUILTIN': 199,
+    'LOAD_GLOBAL_MODULE': 200,
+    'LOAD_SUPER_ATTR_ATTR': 201,
+    'LOAD_SUPER_ATTR_METHOD': 202,
+    'RESUME_CHECK': 203,
+    'SEND_GEN': 204,
+    'STORE_ATTR_INSTANCE_VALUE': 205,
+    'STORE_ATTR_SLOT': 206,
+    'STORE_ATTR_WITH_HINT': 207,
+    'STORE_SUBSCR_DICT': 208,
+    'STORE_SUBSCR_LIST_INT': 209,
+    'TO_BOOL_ALWAYS_TRUE': 210,
+    'TO_BOOL_BOOL': 211,
+    'TO_BOOL_INT': 212,
+    'TO_BOOL_LIST': 213,
+    'TO_BOOL_NONE': 214,
+    'TO_BOOL_STR': 215,
+    'UNPACK_SEQUENCE_LIST': 216,
+    'UNPACK_SEQUENCE_TUPLE': 217,
+    'UNPACK_SEQUENCE_TWO_TUPLE': 218,
+}
+
+opmap = {
+    'CACHE': 0,
+    'BEFORE_ASYNC_WITH': 1,
+    'BEFORE_WITH': 2,
+    'BINARY_SLICE': 4,
+    'BINARY_SUBSCR': 5,
+    'CHECK_EG_MATCH': 6,
+    'CHECK_EXC_MATCH': 7,
+    'CLEANUP_THROW': 8,
+    'DELETE_SUBSCR': 9,
+    'END_ASYNC_FOR': 10,
+    'END_FOR': 11,
+    'END_SEND': 12,
+    'EXIT_INIT_CHECK': 13,
+    'FORMAT_SIMPLE': 14,
+    'FORMAT_WITH_SPEC': 15,
+    'GET_AITER': 16,
+    'RESERVED': 17,
+    'GET_ANEXT': 18,
+    'GET_ITER': 19,
+    'GET_LEN': 20,
+    'GET_YIELD_FROM_ITER': 21,
+    'INTERPRETER_EXIT': 22,
+    'LOAD_ASSERTION_ERROR': 23,
+    'LOAD_BUILD_CLASS': 24,
+    'LOAD_LOCALS': 25,
+    'MAKE_FUNCTION': 26,
+    'MATCH_KEYS': 27,
+    'MATCH_MAPPING': 28,
+    'MATCH_SEQUENCE': 29,
+    'NOP': 30,
+    'POP_EXCEPT': 31,
+    'POP_TOP': 32,
+    'PUSH_EXC_INFO': 33,
+    'PUSH_NULL': 34,
+    'RETURN_GENERATOR': 35,
+    'RETURN_VALUE': 36,
+    'SETUP_ANNOTATIONS': 37,
+    'STORE_SLICE': 38,
+    'STORE_SUBSCR': 39,
+    'TO_BOOL': 40,
+    'UNARY_INVERT': 41,
+    'UNARY_NEGATIVE': 42,
+    'UNARY_NOT': 43,
+    'WITH_EXCEPT_START': 44,
+    'BINARY_OP': 45,
+    'BUILD_CONST_KEY_MAP': 46,
+    'BUILD_LIST': 47,
+    'BUILD_MAP': 48,
+    'BUILD_SET': 49,
+    'BUILD_SLICE': 50,
+    'BUILD_STRING': 51,
+    'BUILD_TUPLE': 52,
+    'CALL': 53,
+    'CALL_FUNCTION_EX': 54,
+    'CALL_INTRINSIC_1': 55,
+    'CALL_INTRINSIC_2': 56,
+    'CALL_KW': 57,
+    'COMPARE_OP': 58,
+    'CONTAINS_OP': 59,
+    'CONVERT_VALUE': 60,
+    'COPY': 61,
+    'COPY_FREE_VARS': 62,
+    'DELETE_ATTR': 63,
+    'DELETE_DEREF': 64,
+    'DELETE_FAST': 65,
+    'DELETE_GLOBAL': 66,
+    'DELETE_NAME': 67,
+    'DICT_MERGE': 68,
+    'DICT_UPDATE': 69,
+    'ENTER_EXECUTOR': 70,
+    'EXTENDED_ARG': 71,
+    'FOR_ITER': 72,
+    'GET_AWAITABLE': 73,
+    'IMPORT_FROM': 74,
+    'IMPORT_NAME': 75,
+    'IS_OP': 76,
+    'JUMP_BACKWARD': 77,
+    'JUMP_BACKWARD_NO_INTERRUPT': 78,
+    'JUMP_FORWARD': 79,
+    'LIST_APPEND': 80,
+    'LIST_EXTEND': 81,
+    'LOAD_ATTR': 82,
+    'LOAD_CONST': 83,
+    'LOAD_DEREF': 84,
+    'LOAD_FAST': 85,
+    'LOAD_FAST_AND_CLEAR': 86,
+    'LOAD_FAST_CHECK': 87,
+    'LOAD_FAST_LOAD_FAST': 88,
+    'LOAD_FROM_DICT_OR_DEREF': 89,
+    'LOAD_FROM_DICT_OR_GLOBALS': 90,
+    'LOAD_GLOBAL': 91,
+    'LOAD_NAME': 92,
+    'LOAD_SUPER_ATTR': 93,
+    'MAKE_CELL': 94,
+    'MAP_ADD': 95,
+    'MATCH_CLASS': 96,
+    'POP_JUMP_IF_FALSE': 97,
+    'POP_JUMP_IF_NONE': 98,
+    'POP_JUMP_IF_NOT_NONE': 99,
+    'POP_JUMP_IF_TRUE': 100,
+    'RAISE_VARARGS': 101,
+    'RERAISE': 102,
+    'RETURN_CONST': 103,
+    'SEND': 104,
+    'SET_ADD': 105,
+    'SET_FUNCTION_ATTRIBUTE': 106,
+    'SET_UPDATE': 107,
+    'STORE_ATTR': 108,
+    'STORE_DEREF': 109,
+    'STORE_FAST': 110,
+    'STORE_FAST_LOAD_FAST': 111,
+    'STORE_FAST_STORE_FAST': 112,
+    'STORE_GLOBAL': 113,
+    'STORE_NAME': 114,
+    'SWAP': 115,
+    'UNPACK_EX': 116,
+    'UNPACK_SEQUENCE': 117,
+    'YIELD_VALUE': 118,
+    'RESUME': 149,
+    'INSTRUMENTED_RESUME': 236,
+    'INSTRUMENTED_END_FOR': 237,
+    'INSTRUMENTED_END_SEND': 238,
+    'INSTRUMENTED_RETURN_VALUE': 239,
+    'INSTRUMENTED_RETURN_CONST': 240,
+    'INSTRUMENTED_YIELD_VALUE': 241,
+    'INSTRUMENTED_LOAD_SUPER_ATTR': 242,
+    'INSTRUMENTED_FOR_ITER': 243,
+    'INSTRUMENTED_CALL': 244,
+    'INSTRUMENTED_CALL_KW': 245,
+    'INSTRUMENTED_CALL_FUNCTION_EX': 246,
+    'INSTRUMENTED_INSTRUCTION': 247,
+    'INSTRUMENTED_JUMP_FORWARD': 248,
+    'INSTRUMENTED_JUMP_BACKWARD': 249,
+    'INSTRUMENTED_POP_JUMP_IF_TRUE': 250,
+    'INSTRUMENTED_POP_JUMP_IF_FALSE': 251,
+    'INSTRUMENTED_POP_JUMP_IF_NONE': 252,
+    'INSTRUMENTED_POP_JUMP_IF_NOT_NONE': 253,
+    'INSTRUMENTED_LINE': 254,
+    'JUMP': 256,
+    'JUMP_NO_INTERRUPT': 257,
+    'LOAD_CLOSURE': 258,
+    'LOAD_METHOD': 259,
+    'LOAD_SUPER_METHOD': 260,
+    'LOAD_ZERO_SUPER_ATTR': 261,
+    'LOAD_ZERO_SUPER_METHOD': 262,
+    'POP_BLOCK': 263,
+    'SETUP_CLEANUP': 264,
+    'SETUP_FINALLY': 265,
+    'SETUP_WITH': 266,
+    'STORE_FAST_MAYBE_NULL': 267,
+}
+MIN_INSTRUMENTED_OPCODE = 236
+HAVE_ARGUMENT = 45
diff --git a/Lib/_pydatetime.py b/Lib/_pydatetime.py
index f4fc2c58e5e293..bca2acf1fc88cf 100644
--- a/Lib/_pydatetime.py
+++ b/Lib/_pydatetime.py
@@ -1015,13 +1015,9 @@ def fromisocalendar(cls, year, week, day):
     def __repr__(self):
         """Convert to formal string, for repr().
 
-        >>> dt = datetime(2010, 1, 1)
-        >>> repr(dt)
-        'datetime.datetime(2010, 1, 1, 0, 0)'
-
-        >>> dt = datetime(2010, 1, 1, tzinfo=timezone.utc)
-        >>> repr(dt)
-        'datetime.datetime(2010, 1, 1, 0, 0, tzinfo=datetime.timezone.utc)'
+        >>> d = date(2010, 1, 1)
+        >>> repr(d)
+        'datetime.date(2010, 1, 1)'
         """
         return "%s.%s(%d, %d, %d)" % (_get_class_module(self),
                                       self.__class__.__qualname__,
@@ -1112,6 +1108,8 @@ def replace(self, year=None, month=None, day=None):
             day = self._day
         return type(self)(year, month, day)
 
+    __replace__ = replace
+
     # Comparisons of date objects with other.
 
     def __eq__(self, other):
@@ -1236,7 +1234,7 @@ def __reduce__(self):
 class tzinfo:
     """Abstract base class for time zone info classes.
 
-    Subclasses must override the name(), utcoffset() and dst() methods.
+    Subclasses must override the tzname(), utcoffset() and dst() methods.
     """
     __slots__ = ()
 
@@ -1637,6 +1635,8 @@ def replace(self, hour=None, minute=None, second=None, microsecond=None,
             fold = self._fold
         return type(self)(hour, minute, second, microsecond, tzinfo, fold=fold)
 
+    __replace__ = replace
+
     # Pickle support.
 
     def _getstate(self, protocol=3):
@@ -1684,7 +1684,7 @@ class datetime(date):
     The year, month and day arguments are required. tzinfo may be None, or an
     instance of a tzinfo subclass. The remaining arguments may be ints.
     """
-    __slots__ = date.__slots__ + time.__slots__
+    __slots__ = time.__slots__
 
     def __new__(cls, year, month=None, day=None, hour=0, minute=0, second=0,
                 microsecond=0, tzinfo=None, *, fold=0):
@@ -1812,7 +1812,7 @@ def utcfromtimestamp(cls, t):
         warnings.warn("datetime.utcfromtimestamp() is deprecated and scheduled "
                       "for removal in a future version. Use timezone-aware "
                       "objects to represent datetimes in UTC: "
-                      "datetime.fromtimestamp(t, datetime.UTC).",
+                      "datetime.datetime.fromtimestamp(t, datetime.UTC).",
                       DeprecationWarning,
                       stacklevel=2)
         return cls._fromtimestamp(t, True, None)
@@ -1830,7 +1830,7 @@ def utcnow(cls):
         warnings.warn("datetime.utcnow() is deprecated and scheduled for "
                       "removal in a future version. Instead, Use timezone-aware "
                       "objects to represent datetimes in UTC: "
-                      "datetime.now(datetime.UTC).",
+                      "datetime.datetime.now(datetime.UTC).",
                       DeprecationWarning,
                       stacklevel=2)
         t = _time.time()
@@ -1983,6 +1983,8 @@ def replace(self, year=None, month=None, day=None, hour=None,
         return type(self)(year, month, day, hour, minute, second,
                           microsecond, tzinfo, fold=fold)
 
+    __replace__ = replace
+
     def _local_timezone(self):
         if self.tzinfo is None:
             ts = self._mktime()
diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 7f247ff47c9e61..32698abac78d25 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -33,11 +33,8 @@
 # Rebind for compatibility
 BlockingIOError = BlockingIOError
 
-# Does io.IOBase finalizer log the exception if the close() method fails?
-# The exception is ignored silently by default in release build.
-_IOBASE_EMITS_UNRAISABLE = (hasattr(sys, "gettotalrefcount") or sys.flags.dev_mode)
 # Does open() check its 'errors' argument?
-_CHECK_ERRORS = _IOBASE_EMITS_UNRAISABLE
+_CHECK_ERRORS = (hasattr(sys, "gettotalrefcount") or sys.flags.dev_mode)
 
 
 def text_encoding(encoding, stacklevel=2):
@@ -416,18 +413,9 @@ def __del__(self):
         if closed:
             return
 
-        if _IOBASE_EMITS_UNRAISABLE:
-            self.close()
-        else:
-            # The try/except block is in case this is called at program
-            # exit time, when it's possible that globals have already been
-            # deleted, and then the close() call might fail.  Since
-            # there's nothing we can do about such failures and they annoy
-            # the end users, we suppress the traceback.
-            try:
-                self.close()
-            except:
-                pass
+        # If close() fails, the caller logs the exception with
+        # sys.unraisablehook. close() must be called at the end at __del__().
+        self.close()
 
     ### Inquiries ###
 
diff --git a/Lib/aifc.py b/Lib/aifc.py
deleted file mode 100644
index 5254987e22bc16..00000000000000
--- a/Lib/aifc.py
+++ /dev/null
@@ -1,984 +0,0 @@
-"""Stuff to parse AIFF-C and AIFF files.
-
-Unless explicitly stated otherwise, the description below is true
-both for AIFF-C files and AIFF files.
-
-An AIFF-C file has the following structure.
-
-  +-----------------+
-  | FORM            |
-  +-----------------+
-  | <size>          |
-  +----+------------+
-  |    | AIFC       |
-  |    +------------+
-  |    | <chunks>   |
-  |    |    .       |
-  |    |    .       |
-  |    |    .       |
-  +----+------------+
-
-An AIFF file has the string "AIFF" instead of "AIFC".
-
-A chunk consists of an identifier (4 bytes) followed by a size (4 bytes,
-big endian order), followed by the data.  The size field does not include
-the size of the 8 byte header.
-
-The following chunk types are recognized.
-
-  FVER
-      <version number of AIFF-C defining document> (AIFF-C only).
-  MARK
-      <# of markers> (2 bytes)
-      list of markers:
-          <marker ID> (2 bytes, must be > 0)
-          <position> (4 bytes)
-          <marker name> ("pstring")
-  COMM
-      <# of channels> (2 bytes)
-      <# of sound frames> (4 bytes)
-      <size of the samples> (2 bytes)
-      <sampling frequency> (10 bytes, IEEE 80-bit extended
-          floating point)
-      in AIFF-C files only:
-      <compression type> (4 bytes)
-      <human-readable version of compression type> ("pstring")
-  SSND
-      <offset> (4 bytes, not used by this program)
-      <blocksize> (4 bytes, not used by this program)
-      <sound data>
-
-A pstring consists of 1 byte length, a string of characters, and 0 or 1
-byte pad to make the total length even.
-
-Usage.
-
-Reading AIFF files:
-  f = aifc.open(file, 'r')
-where file is either the name of a file or an open file pointer.
-The open file pointer must have methods read(), seek(), and close().
-In some types of audio files, if the setpos() method is not used,
-the seek() method is not necessary.
-
-This returns an instance of a class with the following public methods:
-  getnchannels()  -- returns number of audio channels (1 for
-             mono, 2 for stereo)
-  getsampwidth()  -- returns sample width in bytes
-  getframerate()  -- returns sampling frequency
-  getnframes()    -- returns number of audio frames
-  getcomptype()   -- returns compression type ('NONE' for AIFF files)
-  getcompname()   -- returns human-readable version of
-             compression type ('not compressed' for AIFF files)
-  getparams() -- returns a namedtuple consisting of all of the
-             above in the above order
-  getmarkers()    -- get the list of marks in the audio file or None
-             if there are no marks
-  getmark(id) -- get mark with the specified id (raises an error
-             if the mark does not exist)
-  readframes(n)   -- returns at most n frames of audio
-  rewind()    -- rewind to the beginning of the audio stream
-  setpos(pos) -- seek to the specified position
-  tell()      -- return the current position
-  close()     -- close the instance (make it unusable)
-The position returned by tell(), the position given to setpos() and
-the position of marks are all compatible and have nothing to do with
-the actual position in the file.
-The close() method is called automatically when the class instance
-is destroyed.
-
-Writing AIFF files:
-  f = aifc.open(file, 'w')
-where file is either the name of a file or an open file pointer.
-The open file pointer must have methods write(), tell(), seek(), and
-close().
-
-This returns an instance of a class with the following public methods:
-  aiff()      -- create an AIFF file (AIFF-C default)
-  aifc()      -- create an AIFF-C file
-  setnchannels(n) -- set the number of channels
-  setsampwidth(n) -- set the sample width
-  setframerate(n) -- set the frame rate
-  setnframes(n)   -- set the number of frames
-  setcomptype(type, name)
-          -- set the compression type and the
-             human-readable compression type
-  setparams(tuple)
-          -- set all parameters at once
-  setmark(id, pos, name)
-          -- add specified mark to the list of marks
-  tell()      -- return current position in output file (useful
-             in combination with setmark())
-  writeframesraw(data)
-          -- write audio frames without pathing up the
-             file header
-  writeframes(data)
-          -- write audio frames and patch up the file header
-  close()     -- patch up the file header and close the
-             output file
-You should set the parameters before the first writeframesraw or
-writeframes.  The total number of frames does not need to be set,
-but when it is set to the correct value, the header does not have to
-be patched up.
-It is best to first set all parameters, perhaps possibly the
-compression type, and then write audio frames using writeframesraw.
-When all frames have been written, either call writeframes(b'') or
-close() to patch up the sizes in the header.
-Marks can be added anytime.  If there are any marks, you must call
-close() after all frames have been written.
-The close() method is called automatically when the class instance
-is destroyed.
-
-When a file is opened with the extension '.aiff', an AIFF file is
-written, otherwise an AIFF-C file is written.  This default can be
-changed by calling aiff() or aifc() before the first writeframes or
-writeframesraw.
-"""
-
-import struct
-import builtins
-import warnings
-
-__all__ = ["Error", "open"]
-
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-
-class Error(Exception):
-    pass
-
-_AIFC_version = 0xA2805140     # Version 1 of AIFF-C
-
-def _read_long(file):
-    try:
-        return struct.unpack('>l', file.read(4))[0]
-    except struct.error:
-        raise EOFError from None
-
-def _read_ulong(file):
-    try:
-        return struct.unpack('>L', file.read(4))[0]
-    except struct.error:
-        raise EOFError from None
-
-def _read_short(file):
-    try:
-        return struct.unpack('>h', file.read(2))[0]
-    except struct.error:
-        raise EOFError from None
-
-def _read_ushort(file):
-    try:
-        return struct.unpack('>H', file.read(2))[0]
-    except struct.error:
-        raise EOFError from None
-
-def _read_string(file):
-    length = ord(file.read(1))
-    if length == 0:
-        data = b''
-    else:
-        data = file.read(length)
-    if length & 1 == 0:
-        dummy = file.read(1)
-    return data
-
-_HUGE_VAL = 1.79769313486231e+308 # See <limits.h>
-
-def _read_float(f): # 10 bytes
-    expon = _read_short(f) # 2 bytes
-    sign = 1
-    if expon < 0:
-        sign = -1
-        expon = expon + 0x8000
-    himant = _read_ulong(f) # 4 bytes
-    lomant = _read_ulong(f) # 4 bytes
-    if expon == himant == lomant == 0:
-        f = 0.0
-    elif expon == 0x7FFF:
-        f = _HUGE_VAL
-    else:
-        expon = expon - 16383
-        f = (himant * 0x100000000 + lomant) * pow(2.0, expon - 63)
-    return sign * f
-
-def _write_short(f, x):
-    f.write(struct.pack('>h', x))
-
-def _write_ushort(f, x):
-    f.write(struct.pack('>H', x))
-
-def _write_long(f, x):
-    f.write(struct.pack('>l', x))
-
-def _write_ulong(f, x):
-    f.write(struct.pack('>L', x))
-
-def _write_string(f, s):
-    if len(s) > 255:
-        raise ValueError("string exceeds maximum pstring length")
-    f.write(struct.pack('B', len(s)))
-    f.write(s)
-    if len(s) & 1 == 0:
-        f.write(b'\x00')
-
-def _write_float(f, x):
-    import math
-    if x < 0:
-        sign = 0x8000
-        x = x * -1
-    else:
-        sign = 0
-    if x == 0:
-        expon = 0
-        himant = 0
-        lomant = 0
-    else:
-        fmant, expon = math.frexp(x)
-        if expon > 16384 or fmant >= 1 or fmant != fmant: # Infinity or NaN
-            expon = sign|0x7FFF
-            himant = 0
-            lomant = 0
-        else:                   # Finite
-            expon = expon + 16382
-            if expon < 0:           # denormalized
-                fmant = math.ldexp(fmant, expon)
-                expon = 0
-            expon = expon | sign
-            fmant = math.ldexp(fmant, 32)
-            fsmant = math.floor(fmant)
-            himant = int(fsmant)
-            fmant = math.ldexp(fmant - fsmant, 32)
-            fsmant = math.floor(fmant)
-            lomant = int(fsmant)
-    _write_ushort(f, expon)
-    _write_ulong(f, himant)
-    _write_ulong(f, lomant)
-
-with warnings.catch_warnings():
-    warnings.simplefilter("ignore", DeprecationWarning)
-    from chunk import Chunk
-from collections import namedtuple
-
-_aifc_params = namedtuple('_aifc_params',
-                          'nchannels sampwidth framerate nframes comptype compname')
-
-_aifc_params.nchannels.__doc__ = 'Number of audio channels (1 for mono, 2 for stereo)'
-_aifc_params.sampwidth.__doc__ = 'Sample width in bytes'
-_aifc_params.framerate.__doc__ = 'Sampling frequency'
-_aifc_params.nframes.__doc__ = 'Number of audio frames'
-_aifc_params.comptype.__doc__ = 'Compression type ("NONE" for AIFF files)'
-_aifc_params.compname.__doc__ = ("""\
-A human-readable version of the compression type
-('not compressed' for AIFF files)""")
-
-
-class Aifc_read:
-    # Variables used in this class:
-    #
-    # These variables are available to the user though appropriate
-    # methods of this class:
-    # _file -- the open file with methods read(), close(), and seek()
-    #       set through the __init__() method
-    # _nchannels -- the number of audio channels
-    #       available through the getnchannels() method
-    # _nframes -- the number of audio frames
-    #       available through the getnframes() method
-    # _sampwidth -- the number of bytes per audio sample
-    #       available through the getsampwidth() method
-    # _framerate -- the sampling frequency
-    #       available through the getframerate() method
-    # _comptype -- the AIFF-C compression type ('NONE' if AIFF)
-    #       available through the getcomptype() method
-    # _compname -- the human-readable AIFF-C compression type
-    #       available through the getcomptype() method
-    # _markers -- the marks in the audio file
-    #       available through the getmarkers() and getmark()
-    #       methods
-    # _soundpos -- the position in the audio stream
-    #       available through the tell() method, set through the
-    #       setpos() method
-    #
-    # These variables are used internally only:
-    # _version -- the AIFF-C version number
-    # _decomp -- the decompressor from builtin module cl
-    # _comm_chunk_read -- 1 iff the COMM chunk has been read
-    # _aifc -- 1 iff reading an AIFF-C file
-    # _ssnd_seek_needed -- 1 iff positioned correctly in audio
-    #       file for readframes()
-    # _ssnd_chunk -- instantiation of a chunk class for the SSND chunk
-    # _framesize -- size of one frame in the file
-
-    _file = None  # Set here since __del__ checks it
-
-    def initfp(self, file):
-        self._version = 0
-        self._convert = None
-        self._markers = []
-        self._soundpos = 0
-        self._file = file
-        chunk = Chunk(file)
-        if chunk.getname() != b'FORM':
-            raise Error('file does not start with FORM id')
-        formdata = chunk.read(4)
-        if formdata == b'AIFF':
-            self._aifc = 0
-        elif formdata == b'AIFC':
-            self._aifc = 1
-        else:
-            raise Error('not an AIFF or AIFF-C file')
-        self._comm_chunk_read = 0
-        self._ssnd_chunk = None
-        while 1:
-            self._ssnd_seek_needed = 1
-            try:
-                chunk = Chunk(self._file)
-            except EOFError:
-                break
-            chunkname = chunk.getname()
-            if chunkname == b'COMM':
-                self._read_comm_chunk(chunk)
-                self._comm_chunk_read = 1
-            elif chunkname == b'SSND':
-                self._ssnd_chunk = chunk
-                dummy = chunk.read(8)
-                self._ssnd_seek_needed = 0
-            elif chunkname == b'FVER':
-                self._version = _read_ulong(chunk)
-            elif chunkname == b'MARK':
-                self._readmark(chunk)
-            chunk.skip()
-        if not self._comm_chunk_read or not self._ssnd_chunk:
-            raise Error('COMM chunk and/or SSND chunk missing')
-
-    def __init__(self, f):
-        if isinstance(f, str):
-            file_object = builtins.open(f, 'rb')
-            try:
-                self.initfp(file_object)
-            except:
-                file_object.close()
-                raise
-        else:
-            # assume it is an open file object already
-            self.initfp(f)
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        self.close()
-
-    #
-    # User visible methods.
-    #
-    def getfp(self):
-        return self._file
-
-    def rewind(self):
-        self._ssnd_seek_needed = 1
-        self._soundpos = 0
-
-    def close(self):
-        file = self._file
-        if file is not None:
-            self._file = None
-            file.close()
-
-    def tell(self):
-        return self._soundpos
-
-    def getnchannels(self):
-        return self._nchannels
-
-    def getnframes(self):
-        return self._nframes
-
-    def getsampwidth(self):
-        return self._sampwidth
-
-    def getframerate(self):
-        return self._framerate
-
-    def getcomptype(self):
-        return self._comptype
-
-    def getcompname(self):
-        return self._compname
-
-##  def getversion(self):
-##      return self._version
-
-    def getparams(self):
-        return _aifc_params(self.getnchannels(), self.getsampwidth(),
-                            self.getframerate(), self.getnframes(),
-                            self.getcomptype(), self.getcompname())
-
-    def getmarkers(self):
-        if len(self._markers) == 0:
-            return None
-        return self._markers
-
-    def getmark(self, id):
-        for marker in self._markers:
-            if id == marker[0]:
-                return marker
-        raise Error('marker {0!r} does not exist'.format(id))
-
-    def setpos(self, pos):
-        if pos < 0 or pos > self._nframes:
-            raise Error('position not in range')
-        self._soundpos = pos
-        self._ssnd_seek_needed = 1
-
-    def readframes(self, nframes):
-        if self._ssnd_seek_needed:
-            self._ssnd_chunk.seek(0)
-            dummy = self._ssnd_chunk.read(8)
-            pos = self._soundpos * self._framesize
-            if pos:
-                self._ssnd_chunk.seek(pos + 8)
-            self._ssnd_seek_needed = 0
-        if nframes == 0:
-            return b''
-        data = self._ssnd_chunk.read(nframes * self._framesize)
-        if self._convert and data:
-            data = self._convert(data)
-        self._soundpos = self._soundpos + len(data) // (self._nchannels
-                                                        * self._sampwidth)
-        return data
-
-    #
-    # Internal methods.
-    #
-
-    def _alaw2lin(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        return audioop.alaw2lin(data, 2)
-
-    def _ulaw2lin(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        return audioop.ulaw2lin(data, 2)
-
-    def _adpcm2lin(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        if not hasattr(self, '_adpcmstate'):
-            # first time
-            self._adpcmstate = None
-        data, self._adpcmstate = audioop.adpcm2lin(data, 2, self._adpcmstate)
-        return data
-
-    def _sowt2lin(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        return audioop.byteswap(data, 2)
-
-    def _read_comm_chunk(self, chunk):
-        self._nchannels = _read_short(chunk)
-        self._nframes = _read_long(chunk)
-        self._sampwidth = (_read_short(chunk) + 7) // 8
-        self._framerate = int(_read_float(chunk))
-        if self._sampwidth <= 0:
-            raise Error('bad sample width')
-        if self._nchannels <= 0:
-            raise Error('bad # of channels')
-        self._framesize = self._nchannels * self._sampwidth
-        if self._aifc:
-            #DEBUG: SGI's soundeditor produces a bad size :-(
-            kludge = 0
-            if chunk.chunksize == 18:
-                kludge = 1
-                warnings.warn('Warning: bad COMM chunk size')
-                chunk.chunksize = 23
-            #DEBUG end
-            self._comptype = chunk.read(4)
-            #DEBUG start
-            if kludge:
-                length = ord(chunk.file.read(1))
-                if length & 1 == 0:
-                    length = length + 1
-                chunk.chunksize = chunk.chunksize + length
-                chunk.file.seek(-1, 1)
-            #DEBUG end
-            self._compname = _read_string(chunk)
-            if self._comptype != b'NONE':
-                if self._comptype == b'G722':
-                    self._convert = self._adpcm2lin
-                elif self._comptype in (b'ulaw', b'ULAW'):
-                    self._convert = self._ulaw2lin
-                elif self._comptype in (b'alaw', b'ALAW'):
-                    self._convert = self._alaw2lin
-                elif self._comptype in (b'sowt', b'SOWT'):
-                    self._convert = self._sowt2lin
-                else:
-                    raise Error('unsupported compression type')
-                self._sampwidth = 2
-        else:
-            self._comptype = b'NONE'
-            self._compname = b'not compressed'
-
-    def _readmark(self, chunk):
-        nmarkers = _read_short(chunk)
-        # Some files appear to contain invalid counts.
-        # Cope with this by testing for EOF.
-        try:
-            for i in range(nmarkers):
-                id = _read_short(chunk)
-                pos = _read_long(chunk)
-                name = _read_string(chunk)
-                if pos or name:
-                    # some files appear to have
-                    # dummy markers consisting of
-                    # a position 0 and name ''
-                    self._markers.append((id, pos, name))
-        except EOFError:
-            w = ('Warning: MARK chunk contains only %s marker%s instead of %s' %
-                 (len(self._markers), '' if len(self._markers) == 1 else 's',
-                  nmarkers))
-            warnings.warn(w)
-
-class Aifc_write:
-    # Variables used in this class:
-    #
-    # These variables are user settable through appropriate methods
-    # of this class:
-    # _file -- the open file with methods write(), close(), tell(), seek()
-    #       set through the __init__() method
-    # _comptype -- the AIFF-C compression type ('NONE' in AIFF)
-    #       set through the setcomptype() or setparams() method
-    # _compname -- the human-readable AIFF-C compression type
-    #       set through the setcomptype() or setparams() method
-    # _nchannels -- the number of audio channels
-    #       set through the setnchannels() or setparams() method
-    # _sampwidth -- the number of bytes per audio sample
-    #       set through the setsampwidth() or setparams() method
-    # _framerate -- the sampling frequency
-    #       set through the setframerate() or setparams() method
-    # _nframes -- the number of audio frames written to the header
-    #       set through the setnframes() or setparams() method
-    # _aifc -- whether we're writing an AIFF-C file or an AIFF file
-    #       set through the aifc() method, reset through the
-    #       aiff() method
-    #
-    # These variables are used internally only:
-    # _version -- the AIFF-C version number
-    # _comp -- the compressor from builtin module cl
-    # _nframeswritten -- the number of audio frames actually written
-    # _datalength -- the size of the audio samples written to the header
-    # _datawritten -- the size of the audio samples actually written
-
-    _file = None  # Set here since __del__ checks it
-
-    def __init__(self, f):
-        if isinstance(f, str):
-            file_object = builtins.open(f, 'wb')
-            try:
-                self.initfp(file_object)
-            except:
-                file_object.close()
-                raise
-
-            # treat .aiff file extensions as non-compressed audio
-            if f.endswith('.aiff'):
-                self._aifc = 0
-        else:
-            # assume it is an open file object already
-            self.initfp(f)
-
-    def initfp(self, file):
-        self._file = file
-        self._version = _AIFC_version
-        self._comptype = b'NONE'
-        self._compname = b'not compressed'
-        self._convert = None
-        self._nchannels = 0
-        self._sampwidth = 0
-        self._framerate = 0
-        self._nframes = 0
-        self._nframeswritten = 0
-        self._datawritten = 0
-        self._datalength = 0
-        self._markers = []
-        self._marklength = 0
-        self._aifc = 1      # AIFF-C is default
-
-    def __del__(self):
-        self.close()
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        self.close()
-
-    #
-    # User visible methods.
-    #
-    def aiff(self):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        self._aifc = 0
-
-    def aifc(self):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        self._aifc = 1
-
-    def setnchannels(self, nchannels):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if nchannels < 1:
-            raise Error('bad # of channels')
-        self._nchannels = nchannels
-
-    def getnchannels(self):
-        if not self._nchannels:
-            raise Error('number of channels not set')
-        return self._nchannels
-
-    def setsampwidth(self, sampwidth):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if sampwidth < 1 or sampwidth > 4:
-            raise Error('bad sample width')
-        self._sampwidth = sampwidth
-
-    def getsampwidth(self):
-        if not self._sampwidth:
-            raise Error('sample width not set')
-        return self._sampwidth
-
-    def setframerate(self, framerate):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if framerate <= 0:
-            raise Error('bad frame rate')
-        self._framerate = framerate
-
-    def getframerate(self):
-        if not self._framerate:
-            raise Error('frame rate not set')
-        return self._framerate
-
-    def setnframes(self, nframes):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        self._nframes = nframes
-
-    def getnframes(self):
-        return self._nframeswritten
-
-    def setcomptype(self, comptype, compname):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if comptype not in (b'NONE', b'ulaw', b'ULAW',
-                            b'alaw', b'ALAW', b'G722', b'sowt', b'SOWT'):
-            raise Error('unsupported compression type')
-        self._comptype = comptype
-        self._compname = compname
-
-    def getcomptype(self):
-        return self._comptype
-
-    def getcompname(self):
-        return self._compname
-
-##  def setversion(self, version):
-##      if self._nframeswritten:
-##          raise Error, 'cannot change parameters after starting to write'
-##      self._version = version
-
-    def setparams(self, params):
-        nchannels, sampwidth, framerate, nframes, comptype, compname = params
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if comptype not in (b'NONE', b'ulaw', b'ULAW',
-                            b'alaw', b'ALAW', b'G722', b'sowt', b'SOWT'):
-            raise Error('unsupported compression type')
-        self.setnchannels(nchannels)
-        self.setsampwidth(sampwidth)
-        self.setframerate(framerate)
-        self.setnframes(nframes)
-        self.setcomptype(comptype, compname)
-
-    def getparams(self):
-        if not self._nchannels or not self._sampwidth or not self._framerate:
-            raise Error('not all parameters set')
-        return _aifc_params(self._nchannels, self._sampwidth, self._framerate,
-                            self._nframes, self._comptype, self._compname)
-
-    def setmark(self, id, pos, name):
-        if id <= 0:
-            raise Error('marker ID must be > 0')
-        if pos < 0:
-            raise Error('marker position must be >= 0')
-        if not isinstance(name, bytes):
-            raise Error('marker name must be bytes')
-        for i in range(len(self._markers)):
-            if id == self._markers[i][0]:
-                self._markers[i] = id, pos, name
-                return
-        self._markers.append((id, pos, name))
-
-    def getmark(self, id):
-        for marker in self._markers:
-            if id == marker[0]:
-                return marker
-        raise Error('marker {0!r} does not exist'.format(id))
-
-    def getmarkers(self):
-        if len(self._markers) == 0:
-            return None
-        return self._markers
-
-    def tell(self):
-        return self._nframeswritten
-
-    def writeframesraw(self, data):
-        if not isinstance(data, (bytes, bytearray)):
-            data = memoryview(data).cast('B')
-        self._ensure_header_written(len(data))
-        nframes = len(data) // (self._sampwidth * self._nchannels)
-        if self._convert:
-            data = self._convert(data)
-        self._file.write(data)
-        self._nframeswritten = self._nframeswritten + nframes
-        self._datawritten = self._datawritten + len(data)
-
-    def writeframes(self, data):
-        self.writeframesraw(data)
-        if self._nframeswritten != self._nframes or \
-              self._datalength != self._datawritten:
-            self._patchheader()
-
-    def close(self):
-        if self._file is None:
-            return
-        try:
-            self._ensure_header_written(0)
-            if self._datawritten & 1:
-                # quick pad to even size
-                self._file.write(b'\x00')
-                self._datawritten = self._datawritten + 1
-            self._writemarkers()
-            if self._nframeswritten != self._nframes or \
-                  self._datalength != self._datawritten or \
-                  self._marklength:
-                self._patchheader()
-        finally:
-            # Prevent ref cycles
-            self._convert = None
-            f = self._file
-            self._file = None
-            f.close()
-
-    #
-    # Internal methods.
-    #
-
-    def _lin2alaw(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        return audioop.lin2alaw(data, 2)
-
-    def _lin2ulaw(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        return audioop.lin2ulaw(data, 2)
-
-    def _lin2adpcm(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        if not hasattr(self, '_adpcmstate'):
-            self._adpcmstate = None
-        data, self._adpcmstate = audioop.lin2adpcm(data, 2, self._adpcmstate)
-        return data
-
-    def _lin2sowt(self, data):
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', category=DeprecationWarning)
-            import audioop
-        return audioop.byteswap(data, 2)
-
-    def _ensure_header_written(self, datasize):
-        if not self._nframeswritten:
-            if self._comptype in (b'ULAW', b'ulaw',
-                b'ALAW', b'alaw', b'G722',
-                b'sowt', b'SOWT'):
-                if not self._sampwidth:
-                    self._sampwidth = 2
-                if self._sampwidth != 2:
-                    raise Error('sample width must be 2 when compressing '
-                                'with ulaw/ULAW, alaw/ALAW, sowt/SOWT '
-                                'or G7.22 (ADPCM)')
-            if not self._nchannels:
-                raise Error('# channels not specified')
-            if not self._sampwidth:
-                raise Error('sample width not specified')
-            if not self._framerate:
-                raise Error('sampling rate not specified')
-            self._write_header(datasize)
-
-    def _init_compression(self):
-        if self._comptype == b'G722':
-            self._convert = self._lin2adpcm
-        elif self._comptype in (b'ulaw', b'ULAW'):
-            self._convert = self._lin2ulaw
-        elif self._comptype in (b'alaw', b'ALAW'):
-            self._convert = self._lin2alaw
-        elif self._comptype in (b'sowt', b'SOWT'):
-            self._convert = self._lin2sowt
-
-    def _write_header(self, initlength):
-        if self._aifc and self._comptype != b'NONE':
-            self._init_compression()
-        self._file.write(b'FORM')
-        if not self._nframes:
-            self._nframes = initlength // (self._nchannels * self._sampwidth)
-        self._datalength = self._nframes * self._nchannels * self._sampwidth
-        if self._datalength & 1:
-            self._datalength = self._datalength + 1
-        if self._aifc:
-            if self._comptype in (b'ulaw', b'ULAW', b'alaw', b'ALAW'):
-                self._datalength = self._datalength // 2
-                if self._datalength & 1:
-                    self._datalength = self._datalength + 1
-            elif self._comptype == b'G722':
-                self._datalength = (self._datalength + 3) // 4
-                if self._datalength & 1:
-                    self._datalength = self._datalength + 1
-        try:
-            self._form_length_pos = self._file.tell()
-        except (AttributeError, OSError):
-            self._form_length_pos = None
-        commlength = self._write_form_length(self._datalength)
-        if self._aifc:
-            self._file.write(b'AIFC')
-            self._file.write(b'FVER')
-            _write_ulong(self._file, 4)
-            _write_ulong(self._file, self._version)
-        else:
-            self._file.write(b'AIFF')
-        self._file.write(b'COMM')
-        _write_ulong(self._file, commlength)
-        _write_short(self._file, self._nchannels)
-        if self._form_length_pos is not None:
-            self._nframes_pos = self._file.tell()
-        _write_ulong(self._file, self._nframes)
-        if self._comptype in (b'ULAW', b'ulaw', b'ALAW', b'alaw', b'G722'):
-            _write_short(self._file, 8)
-        else:
-            _write_short(self._file, self._sampwidth * 8)
-        _write_float(self._file, self._framerate)
-        if self._aifc:
-            self._file.write(self._comptype)
-            _write_string(self._file, self._compname)
-        self._file.write(b'SSND')
-        if self._form_length_pos is not None:
-            self._ssnd_length_pos = self._file.tell()
-        _write_ulong(self._file, self._datalength + 8)
-        _write_ulong(self._file, 0)
-        _write_ulong(self._file, 0)
-
-    def _write_form_length(self, datalength):
-        if self._aifc:
-            commlength = 18 + 5 + len(self._compname)
-            if commlength & 1:
-                commlength = commlength + 1
-            verslength = 12
-        else:
-            commlength = 18
-            verslength = 0
-        _write_ulong(self._file, 4 + verslength + self._marklength + \
-                     8 + commlength + 16 + datalength)
-        return commlength
-
-    def _patchheader(self):
-        curpos = self._file.tell()
-        if self._datawritten & 1:
-            datalength = self._datawritten + 1
-            self._file.write(b'\x00')
-        else:
-            datalength = self._datawritten
-        if datalength == self._datalength and \
-              self._nframes == self._nframeswritten and \
-              self._marklength == 0:
-            self._file.seek(curpos, 0)
-            return
-        self._file.seek(self._form_length_pos, 0)
-        dummy = self._write_form_length(datalength)
-        self._file.seek(self._nframes_pos, 0)
-        _write_ulong(self._file, self._nframeswritten)
-        self._file.seek(self._ssnd_length_pos, 0)
-        _write_ulong(self._file, datalength + 8)
-        self._file.seek(curpos, 0)
-        self._nframes = self._nframeswritten
-        self._datalength = datalength
-
-    def _writemarkers(self):
-        if len(self._markers) == 0:
-            return
-        self._file.write(b'MARK')
-        length = 2
-        for marker in self._markers:
-            id, pos, name = marker
-            length = length + len(name) + 1 + 6
-            if len(name) & 1 == 0:
-                length = length + 1
-        _write_ulong(self._file, length)
-        self._marklength = length + 8
-        _write_short(self._file, len(self._markers))
-        for marker in self._markers:
-            id, pos, name = marker
-            _write_short(self._file, id)
-            _write_ulong(self._file, pos)
-            _write_string(self._file, name)
-
-def open(f, mode=None):
-    if mode is None:
-        if hasattr(f, 'mode'):
-            mode = f.mode
-        else:
-            mode = 'rb'
-    if mode in ('r', 'rb'):
-        return Aifc_read(f)
-    elif mode in ('w', 'wb'):
-        return Aifc_write(f)
-    else:
-        raise Error("mode must be 'r', 'rb', 'w', or 'wb'")
-
-
-if __name__ == '__main__':
-    import sys
-    if not sys.argv[1:]:
-        sys.argv.append('/usr/demos/data/audio/bach.aiff')
-    fn = sys.argv[1]
-    with open(fn, 'r') as f:
-        print("Reading", fn)
-        print("nchannels =", f.getnchannels())
-        print("nframes   =", f.getnframes())
-        print("sampwidth =", f.getsampwidth())
-        print("framerate =", f.getframerate())
-        print("comptype  =", f.getcomptype())
-        print("compname  =", f.getcompname())
-        if sys.argv[2:]:
-            gn = sys.argv[2]
-            print("Writing", gn)
-            with open(gn, 'w') as g:
-                g.setparams(f.getparams())
-                while 1:
-                    data = f.readframes(1024)
-                    if not data:
-                        break
-                    g.writeframes(data)
-            print("Done.")
diff --git a/Lib/argparse.py b/Lib/argparse.py
index f5f44ff02c0d38..a32884db80d1ea 100644
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -89,8 +89,6 @@
 import re as _re
 import sys as _sys
 
-import warnings
-
 from gettext import gettext as _, ngettext
 
 SUPPRESS = '==SUPPRESS=='
@@ -883,16 +881,19 @@ def __call__(self, parser, namespace, values, option_string=None):
         raise NotImplementedError(_('.__call__() not defined'))
 
 
+# FIXME: remove together with `BooleanOptionalAction` deprecated arguments.
+_deprecated_default = object()
+
 class BooleanOptionalAction(Action):
     def __init__(self,
                  option_strings,
                  dest,
                  default=None,
-                 type=None,
-                 choices=None,
+                 type=_deprecated_default,
+                 choices=_deprecated_default,
                  required=False,
                  help=None,
-                 metavar=None):
+                 metavar=_deprecated_default):
 
         _option_strings = []
         for option_string in option_strings:
@@ -902,6 +903,25 @@ def __init__(self,
                 option_string = '--no-' + option_string[2:]
                 _option_strings.append(option_string)
 
+        # We need `_deprecated` special value to ban explicit arguments that
+        # match default value. Like:
+        #   parser.add_argument('-f', action=BooleanOptionalAction, type=int)
+        for field_name in ('type', 'choices', 'metavar'):
+            if locals()[field_name] is not _deprecated_default:
+                import warnings
+                warnings._deprecated(
+                    field_name,
+                    "{name!r} is deprecated as of Python 3.12 and will be "
+                    "removed in Python {remove}.",
+                    remove=(3, 14))
+
+        if type is _deprecated_default:
+            type = None
+        if choices is _deprecated_default:
+            choices = None
+        if metavar is _deprecated_default:
+            metavar = None
+
         super().__init__(
             option_strings=_option_strings,
             dest=dest,
@@ -1507,6 +1527,8 @@ def _add_container_actions(self, container):
         title_group_map = {}
         for group in self._action_groups:
             if group.title in title_group_map:
+                # This branch could happen if a derived class added
+                # groups with duplicated titles in __init__
                 msg = _('cannot merge actions - two groups are named %r')
                 raise ValueError(msg % (group.title))
             title_group_map[group.title] = group
@@ -1677,6 +1699,7 @@ def _remove_action(self, action):
         self._group_actions.remove(action)
 
     def add_argument_group(self, *args, **kwargs):
+        import warnings
         warnings.warn(
             "Nesting argument groups is deprecated.",
             category=DeprecationWarning,
@@ -1705,6 +1728,7 @@ def _remove_action(self, action):
         self._group_actions.remove(action)
 
     def add_mutually_exclusive_group(self, *args, **kwargs):
+        import warnings
         warnings.warn(
             "Nesting mutually exclusive groups is deprecated.",
             category=DeprecationWarning,
@@ -1790,13 +1814,11 @@ def identity(string):
 
         # add parent arguments and defaults
         for parent in parents:
+            if not isinstance(parent, ArgumentParser):
+                raise TypeError('parents must be a list of ArgumentParser')
             self._add_container_actions(parent)
-            try:
-                defaults = parent._defaults
-            except AttributeError:
-                pass
-            else:
-                self._defaults.update(defaults)
+            defaults = parent._defaults
+            self._defaults.update(defaults)
 
     # =======================
     # Pretty __repr__ methods
diff --git a/Lib/ast.py b/Lib/ast.py
index 65152047a22370..f7888d18859ae4 100644
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -32,13 +32,15 @@
 
 
 def parse(source, filename='<unknown>', mode='exec', *,
-          type_comments=False, feature_version=None):
+          type_comments=False, feature_version=None, optimize=-1):
     """
     Parse the source into an AST node.
     Equivalent to compile(source, filename, mode, PyCF_ONLY_AST).
     Pass type_comments=True to get back type comments where the syntax allows.
     """
     flags = PyCF_ONLY_AST
+    if optimize > 0:
+        flags |= PyCF_OPTIMIZED_AST
     if type_comments:
         flags |= PyCF_TYPE_COMMENTS
     if feature_version is None:
@@ -50,7 +52,7 @@ def parse(source, filename='<unknown>', mode='exec', *,
         feature_version = minor
     # Else it should be an int giving the minor version for 3.x.
     return compile(source, filename, mode, flags,
-                   _feature_version=feature_version)
+                   _feature_version=feature_version, optimize=optimize)
 
 
 def literal_eval(node_or_string):
@@ -1051,6 +1053,8 @@ def visit_ClassDef(self, node):
             self.fill("@")
             self.traverse(deco)
         self.fill("class " + node.name)
+        if hasattr(node, "type_params"):
+            self._type_params_helper(node.type_params)
         with self.delimit_if("(", ")", condition = node.bases or node.keywords):
             comma = False
             for e in node.bases:
@@ -1082,6 +1086,8 @@ def _function_helper(self, node, fill_suffix):
             self.traverse(deco)
         def_str = fill_suffix + " " + node.name
         self.fill(def_str)
+        if hasattr(node, "type_params"):
+            self._type_params_helper(node.type_params)
         with self.delimit("(", ")"):
             self.traverse(node.args)
         if node.returns:
@@ -1090,6 +1096,30 @@ def _function_helper(self, node, fill_suffix):
         with self.block(extra=self.get_type_comment(node)):
             self._write_docstring_and_traverse_body(node)
 
+    def _type_params_helper(self, type_params):
+        if type_params is not None and len(type_params) > 0:
+            with self.delimit("[", "]"):
+                self.interleave(lambda: self.write(", "), self.traverse, type_params)
+
+    def visit_TypeVar(self, node):
+        self.write(node.name)
+        if node.bound:
+            self.write(": ")
+            self.traverse(node.bound)
+
+    def visit_TypeVarTuple(self, node):
+        self.write("*" + node.name)
+
+    def visit_ParamSpec(self, node):
+        self.write("**" + node.name)
+
+    def visit_TypeAlias(self, node):
+        self.fill("type ")
+        self.traverse(node.name)
+        self._type_params_helper(node.type_params)
+        self.write(" = ")
+        self.traverse(node.value)
+
     def visit_For(self, node):
         self._for_helper("for ", node)
 
@@ -1195,17 +1225,7 @@ def _write_str_avoiding_backslashes(self, string, *, quote_types=_ALL_QUOTES):
 
     def visit_JoinedStr(self, node):
         self.write("f")
-        if self._avoid_backslashes:
-            with self.buffered() as buffer:
-                self._write_fstring_inner(node)
-            return self._write_str_avoiding_backslashes("".join(buffer))
-
-        # If we don't need to avoid backslashes globally (i.e., we only need
-        # to avoid them inside FormattedValues), it's cosmetically preferred
-        # to use escaped whitespace. That is, it's preferred to use backslashes
-        # for cases like: f"{x}\n". To accomplish this, we keep track of what
-        # in our buffer corresponds to FormattedValues and what corresponds to
-        # Constant parts of the f-string, and allow escapes accordingly.
+
         fstring_parts = []
         for value in node.values:
             with self.buffered() as buffer:
@@ -1216,25 +1236,49 @@ def visit_JoinedStr(self, node):
 
         new_fstring_parts = []
         quote_types = list(_ALL_QUOTES)
+        fallback_to_repr = False
         for value, is_constant in fstring_parts:
-            value, quote_types = self._str_literal_helper(
-                value,
-                quote_types=quote_types,
-                escape_special_whitespace=is_constant,
-            )
+            if is_constant:
+                value, new_quote_types = self._str_literal_helper(
+                    value,
+                    quote_types=quote_types,
+                    escape_special_whitespace=True,
+                )
+                if set(new_quote_types).isdisjoint(quote_types):
+                    fallback_to_repr = True
+                    break
+                quote_types = new_quote_types
+            elif "\n" in value:
+                quote_types = [q for q in quote_types if q in _MULTI_QUOTES]
+                assert quote_types
             new_fstring_parts.append(value)
 
+        if fallback_to_repr:
+            # If we weren't able to find a quote type that works for all parts
+            # of the JoinedStr, fallback to using repr and triple single quotes.
+            quote_types = ["'''"]
+            new_fstring_parts.clear()
+            for value, is_constant in fstring_parts:
+                if is_constant:
+                    value = repr('"' + value)  # force repr to use single quotes
+                    expected_prefix = "'\""
+                    assert value.startswith(expected_prefix), repr(value)
+                    value = value[len(expected_prefix):-1]
+                new_fstring_parts.append(value)
+
         value = "".join(new_fstring_parts)
         quote_type = quote_types[0]
         self.write(f"{quote_type}{value}{quote_type}")
 
-    def _write_fstring_inner(self, node):
+    def _write_fstring_inner(self, node, scape_newlines=False):
         if isinstance(node, JoinedStr):
             # for both the f-string itself, and format_spec
             for value in node.values:
-                self._write_fstring_inner(value)
+                self._write_fstring_inner(value, scape_newlines=scape_newlines)
         elif isinstance(node, Constant) and isinstance(node.value, str):
             value = node.value.replace("{", "{{").replace("}", "}}")
+            if scape_newlines:
+                value = value.replace("\n", "\\n")
             self.write(value)
         elif isinstance(node, FormattedValue):
             self.visit_FormattedValue(node)
@@ -1243,16 +1287,12 @@ def _write_fstring_inner(self, node):
 
     def visit_FormattedValue(self, node):
         def unparse_inner(inner):
-            unparser = type(self)(_avoid_backslashes=True)
+            unparser = type(self)()
             unparser.set_precedence(_Precedence.TEST.next(), inner)
             return unparser.visit(inner)
 
         with self.delimit("{", "}"):
             expr = unparse_inner(node.value)
-            if "\\" in expr:
-                raise ValueError(
-                    "Unable to avoid backslash in f-string expression part"
-                )
             if expr.startswith("{"):
                 # Separate pair of opening brackets as "{ {"
                 self.write(" ")
@@ -1261,7 +1301,10 @@ def unparse_inner(inner):
                 self.write(f"!{chr(node.conversion)}")
             if node.format_spec:
                 self.write(":")
-                self._write_fstring_inner(node.format_spec)
+                self._write_fstring_inner(
+                    node.format_spec,
+                    scape_newlines=True
+                )
 
     def visit_Name(self, node):
         self.write(node.id)
diff --git a/Lib/asyncio/__init__.py b/Lib/asyncio/__init__.py
index fed16ec7c67fac..03165a425eb7d2 100644
--- a/Lib/asyncio/__init__.py
+++ b/Lib/asyncio/__init__.py
@@ -34,6 +34,7 @@
            streams.__all__ +
            subprocess.__all__ +
            tasks.__all__ +
+           taskgroups.__all__ +
            threads.__all__ +
            timeouts.__all__ +
            transports.__all__)
diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
index 32d7e1c481ecc5..416c732298d9a9 100644
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -305,7 +305,7 @@ def _wakeup(self):
         self._waiters = None
         for waiter in waiters:
             if not waiter.done():
-                waiter.set_result(waiter)
+                waiter.set_result(None)
 
     def _start_serving(self):
         if self._serving:
@@ -377,7 +377,27 @@ async def serve_forever(self):
             self._serving_forever_fut = None
 
     async def wait_closed(self):
-        if self._waiters is None or self._active_count == 0:
+        """Wait until server is closed and all connections are dropped.
+
+        - If the server is not closed, wait.
+        - If it is closed, but there are still active connections, wait.
+
+        Anyone waiting here will be unblocked once both conditions
+        (server is closed and all connections have been dropped)
+        have become true, in either order.
+
+        Historical note: In 3.11 and before, this was broken, returning
+        immediately if the server was already closed, even if there
+        were still active connections. An attempted fix in 3.12.0 was
+        still broken, returning immediately if the server was still
+        open and there were no active connections. Hopefully in 3.12.1
+        we have it right.
+        """
+        # Waiters are unblocked by self._wakeup(), which is called
+        # from two places: self.close() and self._detach(), but only
+        # when both conditions have become true. To signal that this
+        # has happened, self._wakeup() sets self._waiters to None.
+        if self._waiters is None:
             return
         waiter = self._loop.create_future()
         self._waiters.append(waiter)
@@ -400,6 +420,8 @@ def __init__(self):
         self._clock_resolution = time.get_clock_info('monotonic').resolution
         self._exception_handler = None
         self.set_debug(coroutines._is_debug_mode())
+        # The preserved state of async generator hooks.
+        self._old_agen_hooks = None
         # In debug mode, if the execution of a callback or a step of a task
         # exceed this duration in seconds, the slow callback/task is logged.
         self.slow_callback_duration = 0.1
@@ -443,7 +465,7 @@ def create_task(self, coro, *, name=None, context=None):
             else:
                 task = self._task_factory(self, coro, context=context)
 
-            tasks._set_task_name(task, name)
+            task.set_name(name)
 
         return task
 
@@ -601,29 +623,52 @@ def _check_running(self):
             raise RuntimeError(
                 'Cannot run the event loop while another loop is running')
 
-    def run_forever(self):
-        """Run until stop() is called."""
+    def _run_forever_setup(self):
+        """Prepare the run loop to process events.
+
+        This method exists so that custom custom event loop subclasses (e.g., event loops
+        that integrate a GUI event loop with Python's event loop) have access to all the
+        loop setup logic.
+        """
         self._check_closed()
         self._check_running()
         self._set_coroutine_origin_tracking(self._debug)
 
-        old_agen_hooks = sys.get_asyncgen_hooks()
-        try:
-            self._thread_id = threading.get_ident()
-            sys.set_asyncgen_hooks(firstiter=self._asyncgen_firstiter_hook,
-                                   finalizer=self._asyncgen_finalizer_hook)
+        self._old_agen_hooks = sys.get_asyncgen_hooks()
+        self._thread_id = threading.get_ident()
+        sys.set_asyncgen_hooks(
+            firstiter=self._asyncgen_firstiter_hook,
+            finalizer=self._asyncgen_finalizer_hook
+        )
 
-            events._set_running_loop(self)
+        events._set_running_loop(self)
+
+    def _run_forever_cleanup(self):
+        """Clean up after an event loop finishes the looping over events.
+
+        This method exists so that custom custom event loop subclasses (e.g., event loops
+        that integrate a GUI event loop with Python's event loop) have access to all the
+        loop cleanup logic.
+        """
+        self._stopping = False
+        self._thread_id = None
+        events._set_running_loop(None)
+        self._set_coroutine_origin_tracking(False)
+        # Restore any pre-existing async generator hooks.
+        if self._old_agen_hooks is not None:
+            sys.set_asyncgen_hooks(*self._old_agen_hooks)
+            self._old_agen_hooks = None
+
+    def run_forever(self):
+        """Run until stop() is called."""
+        try:
+            self._run_forever_setup()
             while True:
                 self._run_once()
                 if self._stopping:
                     break
         finally:
-            self._stopping = False
-            self._thread_id = None
-            events._set_running_loop(None)
-            self._set_coroutine_origin_tracking(False)
-            sys.set_asyncgen_hooks(*old_agen_hooks)
+            self._run_forever_cleanup()
 
     def run_until_complete(self, future):
         """Run until the Future is done.
@@ -727,7 +772,7 @@ def call_later(self, delay, callback, *args, context=None):
         always relative to the current time.
 
         Each callback will be called exactly once.  If two callbacks
-        are scheduled for exactly the same time, it undefined which
+        are scheduled for exactly the same time, it is undefined which
         will be called first.
 
         Any positional arguments after the callback will be passed to
@@ -1907,8 +1952,11 @@ def _run_once(self):
             timeout = 0
         elif self._scheduled:
             # Compute the desired timeout.
-            when = self._scheduled[0]._when
-            timeout = min(max(0, when - self.time()), MAXIMUM_SELECT_TIMEOUT)
+            timeout = self._scheduled[0]._when - self.time()
+            if timeout > MAXIMUM_SELECT_TIMEOUT:
+                timeout = MAXIMUM_SELECT_TIMEOUT
+            elif timeout < 0:
+                timeout = 0
 
         event_list = self._selector.select(timeout)
         self._process_events(event_list)
diff --git a/Lib/asyncio/events.py b/Lib/asyncio/events.py
index ce44942186b272..0ccf85105e6673 100644
--- a/Lib/asyncio/events.py
+++ b/Lib/asyncio/events.py
@@ -617,7 +617,7 @@ class AbstractEventLoopPolicy:
     def get_event_loop(self):
         """Get the event loop for the current context.
 
-        Returns an event loop object implementing the BaseEventLoop interface,
+        Returns an event loop object implementing the AbstractEventLoop interface,
         or raises an exception in case no event loop has been set for the
         current context and the current policy does not specify to create one.
 
diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py
index fa2422b7fba4a7..d521b4e2e255a9 100644
--- a/Lib/asyncio/selector_events.py
+++ b/Lib/asyncio/selector_events.py
@@ -274,9 +274,8 @@ def _ensure_fd_no_transport(self, fd):
     def _add_reader(self, fd, callback, *args):
         self._check_closed()
         handle = events.Handle(callback, args, self, None)
-        try:
-            key = self._selector.get_key(fd)
-        except KeyError:
+        key = self._selector.get_map().get(fd)
+        if key is None:
             self._selector.register(fd, selectors.EVENT_READ,
                                     (handle, None))
         else:
@@ -290,30 +289,27 @@ def _add_reader(self, fd, callback, *args):
     def _remove_reader(self, fd):
         if self.is_closed():
             return False
-        try:
-            key = self._selector.get_key(fd)
-        except KeyError:
+        key = self._selector.get_map().get(fd)
+        if key is None:
             return False
+        mask, (reader, writer) = key.events, key.data
+        mask &= ~selectors.EVENT_READ
+        if not mask:
+            self._selector.unregister(fd)
         else:
-            mask, (reader, writer) = key.events, key.data
-            mask &= ~selectors.EVENT_READ
-            if not mask:
-                self._selector.unregister(fd)
-            else:
-                self._selector.modify(fd, mask, (None, writer))
+            self._selector.modify(fd, mask, (None, writer))
 
-            if reader is not None:
-                reader.cancel()
-                return True
-            else:
-                return False
+        if reader is not None:
+            reader.cancel()
+            return True
+        else:
+            return False
 
     def _add_writer(self, fd, callback, *args):
         self._check_closed()
         handle = events.Handle(callback, args, self, None)
-        try:
-            key = self._selector.get_key(fd)
-        except KeyError:
+        key = self._selector.get_map().get(fd)
+        if key is None:
             self._selector.register(fd, selectors.EVENT_WRITE,
                                     (None, handle))
         else:
@@ -328,24 +324,22 @@ def _remove_writer(self, fd):
         """Remove a writer callback."""
         if self.is_closed():
             return False
-        try:
-            key = self._selector.get_key(fd)
-        except KeyError:
+        key = self._selector.get_map().get(fd)
+        if key is None:
             return False
+        mask, (reader, writer) = key.events, key.data
+        # Remove both writer and connector.
+        mask &= ~selectors.EVENT_WRITE
+        if not mask:
+            self._selector.unregister(fd)
         else:
-            mask, (reader, writer) = key.events, key.data
-            # Remove both writer and connector.
-            mask &= ~selectors.EVENT_WRITE
-            if not mask:
-                self._selector.unregister(fd)
-            else:
-                self._selector.modify(fd, mask, (reader, None))
+            self._selector.modify(fd, mask, (reader, None))
 
-            if writer is not None:
-                writer.cancel()
-                return True
-            else:
-                return False
+        if writer is not None:
+            writer.cancel()
+            return True
+        else:
+            return False
 
     def add_reader(self, fd, callback, *args):
         """Add a reader callback."""
@@ -1202,6 +1196,7 @@ def _reset_empty_waiter(self):
 
     def close(self):
         self._read_ready_cb = None
+        self._write_ready = None
         super().close()
 
 
diff --git a/Lib/asyncio/sslproto.py b/Lib/asyncio/sslproto.py
index 488e17d8bccd5b..3eb65a8a08b5a0 100644
--- a/Lib/asyncio/sslproto.py
+++ b/Lib/asyncio/sslproto.py
@@ -539,7 +539,7 @@ def _start_handshake(self):
         # start handshake timeout count down
         self._handshake_timeout_handle = \
             self._loop.call_later(self._ssl_handshake_timeout,
-                                  lambda: self._check_handshake_timeout())
+                                  self._check_handshake_timeout)
 
         self._do_handshake()
 
@@ -619,7 +619,7 @@ def _start_shutdown(self):
             self._set_state(SSLProtocolState.FLUSHING)
             self._shutdown_timeout_handle = self._loop.call_later(
                 self._ssl_shutdown_timeout,
-                lambda: self._check_shutdown_timeout()
+                self._check_shutdown_timeout
             )
             self._do_flush()
 
@@ -758,7 +758,7 @@ def _do_read__buffered(self):
                     else:
                         break
                 else:
-                    self._loop.call_soon(lambda: self._do_read())
+                    self._loop.call_soon(self._do_read)
         except SSLAgainErrors:
             pass
         if offset > 0:
diff --git a/Lib/asyncio/streams.py b/Lib/asyncio/streams.py
index bf15f517e50dce..ffb48b9cd6cb70 100644
--- a/Lib/asyncio/streams.py
+++ b/Lib/asyncio/streams.py
@@ -5,6 +5,7 @@
 import collections
 import socket
 import sys
+import warnings
 import weakref
 
 if hasattr(socket, 'AF_UNIX'):
@@ -66,9 +67,8 @@ async def start_server(client_connected_cb, host=None, port=None, *,
     positional host and port, with various optional keyword arguments
     following.  The return value is the same as loop.create_server().
 
-    Additional optional keyword arguments are loop (to set the event loop
-    instance to use) and limit (to set the buffer limit passed to the
-    StreamReader).
+    Additional optional keyword argument is limit (to set the buffer
+    limit passed to the StreamReader).
 
     The return value is the same as loop.create_server(), i.e. a
     Server object which can be used to stop the service.
@@ -245,7 +245,19 @@ def connection_made(self, transport):
             res = self._client_connected_cb(reader,
                                             self._stream_writer)
             if coroutines.iscoroutine(res):
+                def callback(task):
+                    exc = task.exception()
+                    if exc is not None:
+                        self._loop.call_exception_handler({
+                            'message': 'Unhandled exception in client_connected_cb',
+                            'exception': exc,
+                            'transport': transport,
+                        })
+                        transport.close()
+
                 self._task = self._loop.create_task(res)
+                self._task.add_done_callback(callback)
+
             self._strong_reader = None
 
     def connection_lost(self, exc):
@@ -392,6 +404,13 @@ async def start_tls(self, sslcontext, *,
         self._transport = new_transport
         protocol._replace_writer(self)
 
+    def __del__(self, warnings=warnings):
+        if not self._transport.is_closing():
+            if self._loop.is_closed():
+                warnings.warn("loop is closed", ResourceWarning)
+            else:
+                self.close()
+                warnings.warn(f"unclosed {self!r}", ResourceWarning)
 
 class StreamReader:
 
diff --git a/Lib/asyncio/subprocess.py b/Lib/asyncio/subprocess.py
index 50727ca300e63e..043359bbd03f8a 100644
--- a/Lib/asyncio/subprocess.py
+++ b/Lib/asyncio/subprocess.py
@@ -81,6 +81,9 @@ def pipe_connection_lost(self, fd, exc):
                 self._stdin_closed.set_result(None)
             else:
                 self._stdin_closed.set_exception(exc)
+                # Since calling `wait_closed()` is not mandatory,
+                # we shouldn't log the traceback if this is not awaited.
+                self._stdin_closed._log_traceback = False
             return
         if fd == 1:
             reader = self.stdout
@@ -144,15 +147,17 @@ def kill(self):
 
     async def _feed_stdin(self, input):
         debug = self._loop.get_debug()
-        if input is not None:
-            self.stdin.write(input)
-            if debug:
-                logger.debug(
-                    '%r communicate: feed stdin (%s bytes)', self, len(input))
         try:
+            if input is not None:
+                self.stdin.write(input)
+                if debug:
+                    logger.debug(
+                        '%r communicate: feed stdin (%s bytes)', self, len(input))
+
             await self.stdin.drain()
         except (BrokenPipeError, ConnectionResetError) as exc:
-            # communicate() ignores BrokenPipeError and ConnectionResetError
+            # communicate() ignores BrokenPipeError and ConnectionResetError.
+            # write() and drain() can raise these exceptions.
             if debug:
                 logger.debug('%r communicate: stdin got %r', self, exc)
 
diff --git a/Lib/asyncio/taskgroups.py b/Lib/asyncio/taskgroups.py
index 06b2e0db86a1fe..91be0decc41c42 100644
--- a/Lib/asyncio/taskgroups.py
+++ b/Lib/asyncio/taskgroups.py
@@ -2,7 +2,7 @@
 # license: PSFL.
 
 
-__all__ = ["TaskGroup"]
+__all__ = ("TaskGroup",)
 
 from . import events
 from . import exceptions
@@ -54,16 +54,14 @@ def __repr__(self):
     async def __aenter__(self):
         if self._entered:
             raise RuntimeError(
-                f"TaskGroup {self!r} has been already entered")
-        self._entered = True
-
+                f"TaskGroup {self!r} has already been entered")
         if self._loop is None:
             self._loop = events.get_running_loop()
-
         self._parent_task = tasks.current_task(self._loop)
         if self._parent_task is None:
             raise RuntimeError(
                 f'TaskGroup {self!r} cannot determine the parent task')
+        self._entered = True
 
         return self
 
@@ -163,7 +161,7 @@ def create_task(self, coro, *, name=None, context=None):
             task = self._loop.create_task(coro)
         else:
             task = self._loop.create_task(coro, context=context)
-        tasks._set_task_name(task, name)
+        task.set_name(name)
         # optimization: Immediately call the done callback if the task is
         # already done (e.g. if the coro was able to complete eagerly),
         # and skip scheduling a done callback
diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
index 8d5bde09ea9b5b..e84b21390557be 100644
--- a/Lib/asyncio/tasks.py
+++ b/Lib/asyncio/tasks.py
@@ -15,8 +15,8 @@
 import functools
 import inspect
 import itertools
+import math
 import types
-import warnings
 import weakref
 from types import GenericAlias
 
@@ -67,34 +67,31 @@ def all_tasks(loop=None):
             if futures._get_loop(t) is loop and not t.done()}
 
 
-def _set_task_name(task, name):
-    if name is not None:
-        try:
-            set_name = task.set_name
-        except AttributeError:
-            warnings.warn("Task.set_name() was added in Python 3.8, "
-                      "the method support will be mandatory for third-party "
-                      "task implementations since 3.13.",
-                      DeprecationWarning, stacklevel=3)
-        else:
-            set_name(name)
-
-
 class Task(futures._PyFuture):  # Inherit Python Task implementation
                                 # from a Python Future implementation.
 
     """A coroutine wrapped in a Future."""
 
     # An important invariant maintained while a Task not done:
+    # _fut_waiter is either None or a Future.  The Future
+    # can be either done() or not done().
+    # The task can be in any of 3 states:
     #
-    # - Either _fut_waiter is None, and _step() is scheduled;
-    # - or _fut_waiter is some Future, and _step() is *not* scheduled.
+    # - 1: _fut_waiter is not None and not _fut_waiter.done():
+    #      __step() is *not* scheduled and the Task is waiting for _fut_waiter.
+    # - 2: (_fut_waiter is None or _fut_waiter.done()) and __step() is scheduled:
+    #       the Task is waiting for __step() to be executed.
+    # - 3:  _fut_waiter is None and __step() is *not* scheduled:
+    #       the Task is currently executing (in __step()).
     #
-    # The only transition from the latter to the former is through
-    # _wakeup().  When _fut_waiter is not None, one of its callbacks
-    # must be _wakeup().
-
-    # If False, don't log a message if the task is destroyed whereas its
+    # * In state 1, one of the callbacks of __fut_waiter must be __wakeup().
+    # * The transition from 1 to 2 happens when _fut_waiter becomes done(),
+    #   as it schedules __wakeup() to be called (which calls __step() so
+    #   we way that __step() is scheduled).
+    # * It transitions from 2 to 3 when __step() is executed, and it clears
+    #   _fut_waiter to None.
+
+    # If False, don't log a message if the task is destroyed while its
     # status is still pending
     _log_destroy_pending = True
 
@@ -411,7 +408,7 @@ def create_task(coro, *, name=None, context=None):
     else:
         task = loop.create_task(coro, context=context)
 
-    _set_task_name(task, name)
+    task.set_name(name)
     return task
 
 
@@ -427,8 +424,6 @@ async def wait(fs, *, timeout=None, return_when=ALL_COMPLETED):
 
     The fs iterable must not be empty.
 
-    Coroutines will be wrapped in Tasks.
-
     Returns two sets of Future: (done, pending).
 
     Usage:
@@ -646,6 +641,9 @@ async def sleep(delay, result=None):
         await __sleep0()
         return result
 
+    if math.isnan(delay):
+        raise ValueError("Invalid delay: NaN (not a number)")
+
     loop = events.get_running_loop()
     future = loop.create_future()
     h = loop.call_later(delay,
@@ -944,21 +942,21 @@ def callback():
 def create_eager_task_factory(custom_task_constructor):
     """Create a function suitable for use as a task factory on an event-loop.
 
-	    Example usage:
+        Example usage:
 
-	        loop.set_task_factory(
-	            asyncio.create_eager_task_factory(my_task_constructor))
+            loop.set_task_factory(
+                asyncio.create_eager_task_factory(my_task_constructor))
 
-	    Now, tasks created will be started immediately (rather than being first
-	    scheduled to an event loop). The constructor argument can be any callable
-	    that returns a Task-compatible object and has a signature compatible
-	    with `Task.__init__`; it must have the `eager_start` keyword argument.
+        Now, tasks created will be started immediately (rather than being first
+        scheduled to an event loop). The constructor argument can be any callable
+        that returns a Task-compatible object and has a signature compatible
+        with `Task.__init__`; it must have the `eager_start` keyword argument.
 
-	    Most applications will use `Task` for `custom_task_constructor` and in
+        Most applications will use `Task` for `custom_task_constructor` and in
         this case there's no need to call `create_eager_task_factory()`
         directly. Instead the  global `eager_task_factory` instance can be
         used. E.g. `loop.set_task_factory(asyncio.eager_task_factory)`.
-	    """
+        """
 
     def factory(loop, coro, *, name=None, context=None):
         return custom_task_constructor(
diff --git a/Lib/asyncio/timeouts.py b/Lib/asyncio/timeouts.py
index 029c468739bf2d..30042abb3ad804 100644
--- a/Lib/asyncio/timeouts.py
+++ b/Lib/asyncio/timeouts.py
@@ -49,8 +49,9 @@ def when(self) -> Optional[float]:
 
     def reschedule(self, when: Optional[float]) -> None:
         """Reschedule the timeout."""
-        assert self._state is not _State.CREATED
         if self._state is not _State.ENTERED:
+            if self._state is _State.CREATED:
+                raise RuntimeError("Timeout has not been entered")
             raise RuntimeError(
                 f"Cannot change state of {self._state.value} Timeout",
             )
@@ -82,11 +83,14 @@ def __repr__(self) -> str:
         return f"<Timeout [{self._state.value}]{info_str}>"
 
     async def __aenter__(self) -> "Timeout":
+        if self._state is not _State.CREATED:
+            raise RuntimeError("Timeout has already been entered")
+        task = tasks.current_task()
+        if task is None:
+            raise RuntimeError("Timeout should be used inside a task")
         self._state = _State.ENTERED
-        self._task = tasks.current_task()
+        self._task = task
         self._cancelling = self._task.cancelling()
-        if self._task is None:
-            raise RuntimeError("Timeout should be used inside a task")
         self.reschedule(self._when)
         return self
 
diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
index 17fb4d5f7646ce..41ccf1b78fb93b 100644
--- a/Lib/asyncio/unix_events.py
+++ b/Lib/asyncio/unix_events.py
@@ -32,6 +32,7 @@
     'FastChildWatcher', 'PidfdChildWatcher',
     'MultiLoopChildWatcher', 'ThreadedChildWatcher',
     'DefaultEventLoopPolicy',
+    'EventLoop',
 )
 
 
@@ -63,6 +64,7 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
     def __init__(self, selector=None):
         super().__init__(selector)
         self._signal_handlers = {}
+        self._unix_server_sockets = {}
 
     def close(self):
         super().close()
@@ -226,8 +228,7 @@ async def _make_subprocess_transport(self, protocol, args, shell,
         return transp
 
     def _child_watcher_callback(self, pid, returncode, transp):
-        # Skip one iteration for callbacks to be executed
-        self.call_soon_threadsafe(self.call_soon, transp._process_exited, returncode)
+        self.call_soon_threadsafe(transp._process_exited, returncode)
 
     async def create_unix_connection(
             self, protocol_factory, path=None, *,
@@ -284,7 +285,7 @@ async def create_unix_server(
             sock=None, backlog=100, ssl=None,
             ssl_handshake_timeout=None,
             ssl_shutdown_timeout=None,
-            start_serving=True):
+            start_serving=True, cleanup_socket=True):
         if isinstance(ssl, bool):
             raise TypeError('ssl argument must be an SSLContext or None')
 
@@ -340,6 +341,15 @@ async def create_unix_server(
                 raise ValueError(
                     f'A UNIX Domain Stream Socket was expected, got {sock!r}')
 
+        if cleanup_socket:
+            path = sock.getsockname()
+            # Check for abstract socket. `str` and `bytes` paths are supported.
+            if path[0] not in (0, '\x00'):
+                try:
+                    self._unix_server_sockets[sock] = os.stat(path).st_ino
+                except FileNotFoundError:
+                    pass
+
         sock.setblocking(False)
         server = base_events.Server(self, [sock], protocol_factory,
                                     ssl, backlog, ssl_handshake_timeout,
@@ -394,6 +404,9 @@ def _sock_sendfile_native_impl(self, fut, registered_fd, sock, fileno,
                 fut.set_result(total_sent)
                 return
 
+        # On 32-bit architectures truncate to 1GiB to avoid OverflowError
+        blocksize = min(blocksize, sys.maxsize//2 + 1)
+
         try:
             sent = os.sendfile(fd, fileno, offset, blocksize)
         except (BlockingIOError, InterruptedError):
@@ -457,6 +470,27 @@ def cb(fut):
                     self.remove_writer(fd)
         fut.add_done_callback(cb)
 
+    def _stop_serving(self, sock):
+        # Is this a unix socket that needs cleanup?
+        if sock in self._unix_server_sockets:
+            path = sock.getsockname()
+        else:
+            path = None
+
+        super()._stop_serving(sock)
+
+        if path is not None:
+            prev_ino = self._unix_server_sockets[sock]
+            del self._unix_server_sockets[sock]
+            try:
+                if os.stat(path).st_ino == prev_ino:
+                    os.unlink(path)
+            except FileNotFoundError:
+                pass
+            except OSError as err:
+                logger.error('Unable to clean up listening UNIX socket '
+                             '%r: %r', path, err)
+
 
 class _UnixReadPipeTransport(transports.ReadTransport):
 
@@ -1368,14 +1402,7 @@ def is_active(self):
         return True
 
     def close(self):
-        self._join_threads()
-
-    def _join_threads(self):
-        """Internal: Join all non-daemon threads"""
-        threads = [thread for thread in list(self._threads.values())
-                   if thread.is_alive() and not thread.daemon]
-        for thread in threads:
-            thread.join()
+        pass
 
     def __enter__(self):
         return self
@@ -1394,7 +1421,7 @@ def __del__(self, _warn=warnings.warn):
     def add_child_handler(self, pid, callback, *args):
         loop = events.get_running_loop()
         thread = threading.Thread(target=self._do_waitpid,
-                                  name=f"waitpid-{next(self._pid_counter)}",
+                                  name=f"asyncio-waitpid-{next(self._pid_counter)}",
                                   args=(loop, pid, callback, args),
                                   daemon=True)
         self._threads[pid] = thread
@@ -1462,8 +1489,6 @@ def _init_watcher(self):
                     self._watcher = PidfdChildWatcher()
                 else:
                     self._watcher = ThreadedChildWatcher()
-                if threading.current_thread() is threading.main_thread():
-                    self._watcher.attach_loop(self._local._loop)
 
     def set_event_loop(self, loop):
         """Set the event loop.
@@ -1508,3 +1533,4 @@ def set_child_watcher(self, watcher):
 
 SelectorEventLoop = _UnixSelectorEventLoop
 DefaultEventLoopPolicy = _UnixDefaultEventLoopPolicy
+EventLoop = SelectorEventLoop
diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py
index c9a5fb841cb134..b62ea75fee3858 100644
--- a/Lib/asyncio/windows_events.py
+++ b/Lib/asyncio/windows_events.py
@@ -29,7 +29,7 @@
 __all__ = (
     'SelectorEventLoop', 'ProactorEventLoop', 'IocpProactor',
     'DefaultEventLoopPolicy', 'WindowsSelectorEventLoopPolicy',
-    'WindowsProactorEventLoopPolicy',
+    'WindowsProactorEventLoopPolicy', 'EventLoop',
 )
 
 
@@ -314,24 +314,25 @@ def __init__(self, proactor=None):
             proactor = IocpProactor()
         super().__init__(proactor)
 
-    def run_forever(self):
-        try:
-            assert self._self_reading_future is None
-            self.call_soon(self._loop_self_reading)
-            super().run_forever()
-        finally:
-            if self._self_reading_future is not None:
-                ov = self._self_reading_future._ov
-                self._self_reading_future.cancel()
-                # self_reading_future was just cancelled so if it hasn't been
-                # finished yet, it never will be (it's possible that it has
-                # already finished and its callback is waiting in the queue,
-                # where it could still happen if the event loop is restarted).
-                # Unregister it otherwise IocpProactor.close will wait for it
-                # forever
-                if ov is not None:
-                    self._proactor._unregister(ov)
-                self._self_reading_future = None
+    def _run_forever_setup(self):
+        assert self._self_reading_future is None
+        self.call_soon(self._loop_self_reading)
+        super()._run_forever_setup()
+
+    def _run_forever_cleanup(self):
+        super()._run_forever_cleanup()
+        if self._self_reading_future is not None:
+            ov = self._self_reading_future._ov
+            self._self_reading_future.cancel()
+            # self_reading_future was just cancelled so if it hasn't been
+            # finished yet, it never will be (it's possible that it has
+            # already finished and its callback is waiting in the queue,
+            # where it could still happen if the event loop is restarted).
+            # Unregister it otherwise IocpProactor.close will wait for it
+            # forever
+            if ov is not None:
+                self._proactor._unregister(ov)
+            self._self_reading_future = None
 
     async def create_pipe_connection(self, protocol_factory, address):
         f = self._proactor.connect_pipe(address)
@@ -894,3 +895,4 @@ class WindowsProactorEventLoopPolicy(events.BaseDefaultEventLoopPolicy):
 
 
 DefaultEventLoopPolicy = WindowsProactorEventLoopPolicy
+EventLoop = ProactorEventLoop
diff --git a/Lib/base64.py b/Lib/base64.py
index e233647ee76639..e3e983b3064fe7 100755
--- a/Lib/base64.py
+++ b/Lib/base64.py
@@ -164,7 +164,6 @@ def urlsafe_b64decode(s):
 _b32rev = {}
 
 def _b32encode(alphabet, s):
-    global _b32tab2
     # Delay the initialization of the table to not waste memory
     # if the function is never called
     if alphabet not in _b32tab2:
@@ -200,7 +199,6 @@ def _b32encode(alphabet, s):
     return bytes(encoded)
 
 def _b32decode(alphabet, s, casefold=False, map01=None):
-    global _b32rev
     # Delay the initialization of the table to not waste memory
     # if the function is never called
     if alphabet not in _b32rev:
diff --git a/Lib/bdb.py b/Lib/bdb.py
index 0f3eec653baaad..1acf7957f0d669 100644
--- a/Lib/bdb.py
+++ b/Lib/bdb.py
@@ -32,6 +32,7 @@ def __init__(self, skip=None):
         self.skip = set(skip) if skip else None
         self.breaks = {}
         self.fncache = {}
+        self.frame_trace_lines = {}
         self.frame_returning = None
 
         self._load_breaks()
@@ -331,6 +332,9 @@ def set_trace(self, frame=None):
         while frame:
             frame.f_trace = self.trace_dispatch
             self.botframe = frame
+            # We need f_trace_liens == True for the debugger to work
+            self.frame_trace_lines[frame] = frame.f_trace_lines
+            frame.f_trace_lines = True
             frame = frame.f_back
         self.set_step()
         sys.settrace(self.trace_dispatch)
@@ -349,6 +353,9 @@ def set_continue(self):
             while frame and frame is not self.botframe:
                 del frame.f_trace
                 frame = frame.f_back
+            for frame, prev_trace_lines in self.frame_trace_lines.items():
+                frame.f_trace_lines = prev_trace_lines
+            self.frame_trace_lines = {}
 
     def set_quit(self):
         """Set quitting attribute to True.
diff --git a/Lib/calendar.py b/Lib/calendar.py
index ea56f12ccc41d0..03469d8ac96bcd 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -10,7 +10,6 @@
 from enum import IntEnum, global_enum
 import locale as _locale
 from itertools import repeat
-import warnings
 
 __all__ = ["IllegalMonthError", "IllegalWeekdayError", "setfirstweekday",
            "firstweekday", "isleap", "leapdays", "weekday", "monthrange",
@@ -44,6 +43,7 @@ def __str__(self):
 
 def __getattr__(name):
     if name in ('January', 'February'):
+        import warnings
         warnings.warn(f"The '{name}' attribute is deprecated, use '{name.upper()}' instead",
                       DeprecationWarning, stacklevel=2)
         if name == 'January':
@@ -585,8 +585,6 @@ def __enter__(self):
         _locale.setlocale(_locale.LC_TIME, self.locale)
 
     def __exit__(self, *args):
-        if self.oldlocale is None:
-            return
         _locale.setlocale(_locale.LC_TIME, self.oldlocale)
 
 
@@ -690,7 +688,7 @@ def timegm(tuple):
     return seconds
 
 
-def main(args):
+def main(args=None):
     import argparse
     parser = argparse.ArgumentParser()
     textgroup = parser.add_argument_group('text only arguments')
@@ -723,7 +721,7 @@ def main(args):
     parser.add_argument(
         "-L", "--locale",
         default=None,
-        help="locale to be used from month and weekday names"
+        help="locale to use for month and weekday names"
     )
     parser.add_argument(
         "-e", "--encoding",
@@ -747,7 +745,7 @@ def main(args):
         help="month number (1-12, text only)"
     )
 
-    options = parser.parse_args(args[1:])
+    options = parser.parse_args(args)
 
     if options.locale and not options.encoding:
         parser.error("if --locale is specified --encoding is required")
@@ -756,6 +754,9 @@ def main(args):
     locale = options.locale, options.encoding
 
     if options.type == "html":
+        if options.month:
+            parser.error("incorrect number of arguments")
+            sys.exit(1)
         if options.locale:
             cal = LocaleHTMLCalendar(locale=locale)
         else:
@@ -767,11 +768,8 @@ def main(args):
         write = sys.stdout.buffer.write
         if options.year is None:
             write(cal.formatyearpage(datetime.date.today().year, **optdict))
-        elif options.month is None:
-            write(cal.formatyearpage(options.year, **optdict))
         else:
-            parser.error("incorrect number of arguments")
-            sys.exit(1)
+            write(cal.formatyearpage(options.year, **optdict))
     else:
         if options.locale:
             cal = LocaleTextCalendar(locale=locale)
@@ -795,4 +793,4 @@ def main(args):
 
 
 if __name__ == "__main__":
-    main(sys.argv)
+    main()
diff --git a/Lib/cgi.py b/Lib/cgi.py
deleted file mode 100755
index 8787567be7c081..00000000000000
--- a/Lib/cgi.py
+++ /dev/null
@@ -1,1012 +0,0 @@
-#! /usr/local/bin/python
-
-# NOTE: the above "/usr/local/bin/python" is NOT a mistake.  It is
-# intentionally NOT "/usr/bin/env python".  On many systems
-# (e.g. Solaris), /usr/local/bin is not in $PATH as passed to CGI
-# scripts, and /usr/local/bin is the default directory where Python is
-# installed, so /usr/bin/env would be unable to find python.  Granted,
-# binary installations by Linux vendors often install Python in
-# /usr/bin.  So let those vendors patch cgi.py to match their choice
-# of installation.
-
-"""Support module for CGI (Common Gateway Interface) scripts.
-
-This module defines a number of utilities for use by CGI scripts
-written in Python.
-
-The global variable maxlen can be set to an integer indicating the maximum size
-of a POST request. POST requests larger than this size will result in a
-ValueError being raised during parsing. The default value of this variable is 0,
-meaning the request size is unlimited.
-"""
-
-# History
-# -------
-#
-# Michael McLay started this module.  Steve Majewski changed the
-# interface to SvFormContentDict and FormContentDict.  The multipart
-# parsing was inspired by code submitted by Andreas Paepcke.  Guido van
-# Rossum rewrote, reformatted and documented the module and is currently
-# responsible for its maintenance.
-#
-
-__version__ = "2.6"
-
-
-# Imports
-# =======
-
-from io import StringIO, BytesIO, TextIOWrapper
-from collections.abc import Mapping
-import sys
-import os
-import urllib.parse
-from email.parser import FeedParser
-from email.message import Message
-import html
-import locale
-import tempfile
-import warnings
-
-__all__ = ["MiniFieldStorage", "FieldStorage", "parse", "parse_multipart",
-           "parse_header", "test", "print_exception", "print_environ",
-           "print_form", "print_directory", "print_arguments",
-           "print_environ_usage"]
-
-
-warnings._deprecated(__name__, remove=(3,13))
-
-# Logging support
-# ===============
-
-logfile = ""            # Filename to log to, if not empty
-logfp = None            # File object to log to, if not None
-
-def initlog(*allargs):
-    """Write a log message, if there is a log file.
-
-    Even though this function is called initlog(), you should always
-    use log(); log is a variable that is set either to initlog
-    (initially), to dolog (once the log file has been opened), or to
-    nolog (when logging is disabled).
-
-    The first argument is a format string; the remaining arguments (if
-    any) are arguments to the % operator, so e.g.
-        log("%s: %s", "a", "b")
-    will write "a: b" to the log file, followed by a newline.
-
-    If the global logfp is not None, it should be a file object to
-    which log data is written.
-
-    If the global logfp is None, the global logfile may be a string
-    giving a filename to open, in append mode.  This file should be
-    world writable!!!  If the file can't be opened, logging is
-    silently disabled (since there is no safe place where we could
-    send an error message).
-
-    """
-    global log, logfile, logfp
-    warnings.warn("cgi.log() is deprecated as of 3.10. Use logging instead",
-                  DeprecationWarning, stacklevel=2)
-    if logfile and not logfp:
-        try:
-            logfp = open(logfile, "a", encoding="locale")
-        except OSError:
-            pass
-    if not logfp:
-        log = nolog
-    else:
-        log = dolog
-    log(*allargs)
-
-def dolog(fmt, *args):
-    """Write a log message to the log file.  See initlog() for docs."""
-    logfp.write(fmt%args + "\n")
-
-def nolog(*allargs):
-    """Dummy function, assigned to log when logging is disabled."""
-    pass
-
-def closelog():
-    """Close the log file."""
-    global log, logfile, logfp
-    logfile = ''
-    if logfp:
-        logfp.close()
-        logfp = None
-    log = initlog
-
-log = initlog           # The current logging function
-
-
-# Parsing functions
-# =================
-
-# Maximum input we will accept when REQUEST_METHOD is POST
-# 0 ==> unlimited input
-maxlen = 0
-
-def parse(fp=None, environ=os.environ, keep_blank_values=0,
-          strict_parsing=0, separator='&'):
-    """Parse a query in the environment or from a file (default stdin)
-
-        Arguments, all optional:
-
-        fp              : file pointer; default: sys.stdin.buffer
-
-        environ         : environment dictionary; default: os.environ
-
-        keep_blank_values: flag indicating whether blank values in
-            percent-encoded forms should be treated as blank strings.
-            A true value indicates that blanks should be retained as
-            blank strings.  The default false value indicates that
-            blank values are to be ignored and treated as if they were
-            not included.
-
-        strict_parsing: flag indicating what to do with parsing errors.
-            If false (the default), errors are silently ignored.
-            If true, errors raise a ValueError exception.
-
-        separator: str. The symbol to use for separating the query arguments.
-            Defaults to &.
-    """
-    if fp is None:
-        fp = sys.stdin
-
-    # field keys and values (except for files) are returned as strings
-    # an encoding is required to decode the bytes read from self.fp
-    if hasattr(fp,'encoding'):
-        encoding = fp.encoding
-    else:
-        encoding = 'latin-1'
-
-    # fp.read() must return bytes
-    if isinstance(fp, TextIOWrapper):
-        fp = fp.buffer
-
-    if not 'REQUEST_METHOD' in environ:
-        environ['REQUEST_METHOD'] = 'GET'       # For testing stand-alone
-    if environ['REQUEST_METHOD'] == 'POST':
-        ctype, pdict = parse_header(environ['CONTENT_TYPE'])
-        if ctype == 'multipart/form-data':
-            return parse_multipart(fp, pdict, separator=separator)
-        elif ctype == 'application/x-www-form-urlencoded':
-            clength = int(environ['CONTENT_LENGTH'])
-            if maxlen and clength > maxlen:
-                raise ValueError('Maximum content length exceeded')
-            qs = fp.read(clength).decode(encoding)
-        else:
-            qs = ''                     # Unknown content-type
-        if 'QUERY_STRING' in environ:
-            if qs: qs = qs + '&'
-            qs = qs + environ['QUERY_STRING']
-        elif sys.argv[1:]:
-            if qs: qs = qs + '&'
-            qs = qs + sys.argv[1]
-        environ['QUERY_STRING'] = qs    # XXX Shouldn't, really
-    elif 'QUERY_STRING' in environ:
-        qs = environ['QUERY_STRING']
-    else:
-        if sys.argv[1:]:
-            qs = sys.argv[1]
-        else:
-            qs = ""
-        environ['QUERY_STRING'] = qs    # XXX Shouldn't, really
-    return urllib.parse.parse_qs(qs, keep_blank_values, strict_parsing,
-                                 encoding=encoding, separator=separator)
-
-
-def parse_multipart(fp, pdict, encoding="utf-8", errors="replace", separator='&'):
-    """Parse multipart input.
-
-    Arguments:
-    fp   : input file
-    pdict: dictionary containing other parameters of content-type header
-    encoding, errors: request encoding and error handler, passed to
-        FieldStorage
-
-    Returns a dictionary just like parse_qs(): keys are the field names, each
-    value is a list of values for that field. For non-file fields, the value
-    is a list of strings.
-    """
-    # RFC 2046, Section 5.1 : The "multipart" boundary delimiters are always
-    # represented as 7bit US-ASCII.
-    boundary = pdict['boundary'].decode('ascii')
-    ctype = "multipart/form-data; boundary={}".format(boundary)
-    headers = Message()
-    headers.set_type(ctype)
-    try:
-        headers['Content-Length'] = pdict['CONTENT-LENGTH']
-    except KeyError:
-        pass
-    fs = FieldStorage(fp, headers=headers, encoding=encoding, errors=errors,
-        environ={'REQUEST_METHOD': 'POST'}, separator=separator)
-    return {k: fs.getlist(k) for k in fs}
-
-def _parseparam(s):
-    while s[:1] == ';':
-        s = s[1:]
-        end = s.find(';')
-        while end > 0 and (s.count('"', 0, end) - s.count('\\"', 0, end)) % 2:
-            end = s.find(';', end + 1)
-        if end < 0:
-            end = len(s)
-        f = s[:end]
-        yield f.strip()
-        s = s[end:]
-
-def parse_header(line):
-    """Parse a Content-type like header.
-
-    Return the main content-type and a dictionary of options.
-
-    """
-    parts = _parseparam(';' + line)
-    key = parts.__next__()
-    pdict = {}
-    for p in parts:
-        i = p.find('=')
-        if i >= 0:
-            name = p[:i].strip().lower()
-            value = p[i+1:].strip()
-            if len(value) >= 2 and value[0] == value[-1] == '"':
-                value = value[1:-1]
-                value = value.replace('\\\\', '\\').replace('\\"', '"')
-            pdict[name] = value
-    return key, pdict
-
-
-# Classes for field storage
-# =========================
-
-class MiniFieldStorage:
-
-    """Like FieldStorage, for use when no file uploads are possible."""
-
-    # Dummy attributes
-    filename = None
-    list = None
-    type = None
-    file = None
-    type_options = {}
-    disposition = None
-    disposition_options = {}
-    headers = {}
-
-    def __init__(self, name, value):
-        """Constructor from field name and value."""
-        self.name = name
-        self.value = value
-        # self.file = StringIO(value)
-
-    def __repr__(self):
-        """Return printable representation."""
-        return "MiniFieldStorage(%r, %r)" % (self.name, self.value)
-
-
-class FieldStorage:
-
-    """Store a sequence of fields, reading multipart/form-data.
-
-    This class provides naming, typing, files stored on disk, and
-    more.  At the top level, it is accessible like a dictionary, whose
-    keys are the field names.  (Note: None can occur as a field name.)
-    The items are either a Python list (if there's multiple values) or
-    another FieldStorage or MiniFieldStorage object.  If it's a single
-    object, it has the following attributes:
-
-    name: the field name, if specified; otherwise None
-
-    filename: the filename, if specified; otherwise None; this is the
-        client side filename, *not* the file name on which it is
-        stored (that's a temporary file you don't deal with)
-
-    value: the value as a *string*; for file uploads, this
-        transparently reads the file every time you request the value
-        and returns *bytes*
-
-    file: the file(-like) object from which you can read the data *as
-        bytes* ; None if the data is stored a simple string
-
-    type: the content-type, or None if not specified
-
-    type_options: dictionary of options specified on the content-type
-        line
-
-    disposition: content-disposition, or None if not specified
-
-    disposition_options: dictionary of corresponding options
-
-    headers: a dictionary(-like) object (sometimes email.message.Message or a
-        subclass thereof) containing *all* headers
-
-    The class is subclassable, mostly for the purpose of overriding
-    the make_file() method, which is called internally to come up with
-    a file open for reading and writing.  This makes it possible to
-    override the default choice of storing all files in a temporary
-    directory and unlinking them as soon as they have been opened.
-
-    """
-    def __init__(self, fp=None, headers=None, outerboundary=b'',
-                 environ=os.environ, keep_blank_values=0, strict_parsing=0,
-                 limit=None, encoding='utf-8', errors='replace',
-                 max_num_fields=None, separator='&'):
-        """Constructor.  Read multipart/* until last part.
-
-        Arguments, all optional:
-
-        fp              : file pointer; default: sys.stdin.buffer
-            (not used when the request method is GET)
-            Can be :
-            1. a TextIOWrapper object
-            2. an object whose read() and readline() methods return bytes
-
-        headers         : header dictionary-like object; default:
-            taken from environ as per CGI spec
-
-        outerboundary   : terminating multipart boundary
-            (for internal use only)
-
-        environ         : environment dictionary; default: os.environ
-
-        keep_blank_values: flag indicating whether blank values in
-            percent-encoded forms should be treated as blank strings.
-            A true value indicates that blanks should be retained as
-            blank strings.  The default false value indicates that
-            blank values are to be ignored and treated as if they were
-            not included.
-
-        strict_parsing: flag indicating what to do with parsing errors.
-            If false (the default), errors are silently ignored.
-            If true, errors raise a ValueError exception.
-
-        limit : used internally to read parts of multipart/form-data forms,
-            to exit from the reading loop when reached. It is the difference
-            between the form content-length and the number of bytes already
-            read
-
-        encoding, errors : the encoding and error handler used to decode the
-            binary stream to strings. Must be the same as the charset defined
-            for the page sending the form (content-type : meta http-equiv or
-            header)
-
-        max_num_fields: int. If set, then __init__ throws a ValueError
-            if there are more than n fields read by parse_qsl().
-
-        """
-        method = 'GET'
-        self.keep_blank_values = keep_blank_values
-        self.strict_parsing = strict_parsing
-        self.max_num_fields = max_num_fields
-        self.separator = separator
-        if 'REQUEST_METHOD' in environ:
-            method = environ['REQUEST_METHOD'].upper()
-        self.qs_on_post = None
-        if method == 'GET' or method == 'HEAD':
-            if 'QUERY_STRING' in environ:
-                qs = environ['QUERY_STRING']
-            elif sys.argv[1:]:
-                qs = sys.argv[1]
-            else:
-                qs = ""
-            qs = qs.encode(locale.getpreferredencoding(), 'surrogateescape')
-            fp = BytesIO(qs)
-            if headers is None:
-                headers = {'content-type':
-                           "application/x-www-form-urlencoded"}
-        if headers is None:
-            headers = {}
-            if method == 'POST':
-                # Set default content-type for POST to what's traditional
-                headers['content-type'] = "application/x-www-form-urlencoded"
-            if 'CONTENT_TYPE' in environ:
-                headers['content-type'] = environ['CONTENT_TYPE']
-            if 'QUERY_STRING' in environ:
-                self.qs_on_post = environ['QUERY_STRING']
-            if 'CONTENT_LENGTH' in environ:
-                headers['content-length'] = environ['CONTENT_LENGTH']
-        else:
-            if not (isinstance(headers, (Mapping, Message))):
-                raise TypeError("headers must be mapping or an instance of "
-                                "email.message.Message")
-        self.headers = headers
-        if fp is None:
-            self.fp = sys.stdin.buffer
-        # self.fp.read() must return bytes
-        elif isinstance(fp, TextIOWrapper):
-            self.fp = fp.buffer
-        else:
-            if not (hasattr(fp, 'read') and hasattr(fp, 'readline')):
-                raise TypeError("fp must be file pointer")
-            self.fp = fp
-
-        self.encoding = encoding
-        self.errors = errors
-
-        if not isinstance(outerboundary, bytes):
-            raise TypeError('outerboundary must be bytes, not %s'
-                            % type(outerboundary).__name__)
-        self.outerboundary = outerboundary
-
-        self.bytes_read = 0
-        self.limit = limit
-
-        # Process content-disposition header
-        cdisp, pdict = "", {}
-        if 'content-disposition' in self.headers:
-            cdisp, pdict = parse_header(self.headers['content-disposition'])
-        self.disposition = cdisp
-        self.disposition_options = pdict
-        self.name = None
-        if 'name' in pdict:
-            self.name = pdict['name']
-        self.filename = None
-        if 'filename' in pdict:
-            self.filename = pdict['filename']
-        self._binary_file = self.filename is not None
-
-        # Process content-type header
-        #
-        # Honor any existing content-type header.  But if there is no
-        # content-type header, use some sensible defaults.  Assume
-        # outerboundary is "" at the outer level, but something non-false
-        # inside a multi-part.  The default for an inner part is text/plain,
-        # but for an outer part it should be urlencoded.  This should catch
-        # bogus clients which erroneously forget to include a content-type
-        # header.
-        #
-        # See below for what we do if there does exist a content-type header,
-        # but it happens to be something we don't understand.
-        if 'content-type' in self.headers:
-            ctype, pdict = parse_header(self.headers['content-type'])
-        elif self.outerboundary or method != 'POST':
-            ctype, pdict = "text/plain", {}
-        else:
-            ctype, pdict = 'application/x-www-form-urlencoded', {}
-        self.type = ctype
-        self.type_options = pdict
-        if 'boundary' in pdict:
-            self.innerboundary = pdict['boundary'].encode(self.encoding,
-                                                          self.errors)
-        else:
-            self.innerboundary = b""
-
-        clen = -1
-        if 'content-length' in self.headers:
-            try:
-                clen = int(self.headers['content-length'])
-            except ValueError:
-                pass
-            if maxlen and clen > maxlen:
-                raise ValueError('Maximum content length exceeded')
-        self.length = clen
-        if self.limit is None and clen >= 0:
-            self.limit = clen
-
-        self.list = self.file = None
-        self.done = 0
-        if ctype == 'application/x-www-form-urlencoded':
-            self.read_urlencoded()
-        elif ctype[:10] == 'multipart/':
-            self.read_multi(environ, keep_blank_values, strict_parsing)
-        else:
-            self.read_single()
-
-    def __del__(self):
-        try:
-            self.file.close()
-        except AttributeError:
-            pass
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        self.file.close()
-
-    def __repr__(self):
-        """Return a printable representation."""
-        return "FieldStorage(%r, %r, %r)" % (
-                self.name, self.filename, self.value)
-
-    def __iter__(self):
-        return iter(self.keys())
-
-    def __getattr__(self, name):
-        if name != 'value':
-            raise AttributeError(name)
-        if self.file:
-            self.file.seek(0)
-            value = self.file.read()
-            self.file.seek(0)
-        elif self.list is not None:
-            value = self.list
-        else:
-            value = None
-        return value
-
-    def __getitem__(self, key):
-        """Dictionary style indexing."""
-        if self.list is None:
-            raise TypeError("not indexable")
-        found = []
-        for item in self.list:
-            if item.name == key: found.append(item)
-        if not found:
-            raise KeyError(key)
-        if len(found) == 1:
-            return found[0]
-        else:
-            return found
-
-    def getvalue(self, key, default=None):
-        """Dictionary style get() method, including 'value' lookup."""
-        if key in self:
-            value = self[key]
-            if isinstance(value, list):
-                return [x.value for x in value]
-            else:
-                return value.value
-        else:
-            return default
-
-    def getfirst(self, key, default=None):
-        """ Return the first value received."""
-        if key in self:
-            value = self[key]
-            if isinstance(value, list):
-                return value[0].value
-            else:
-                return value.value
-        else:
-            return default
-
-    def getlist(self, key):
-        """ Return list of received values."""
-        if key in self:
-            value = self[key]
-            if isinstance(value, list):
-                return [x.value for x in value]
-            else:
-                return [value.value]
-        else:
-            return []
-
-    def keys(self):
-        """Dictionary style keys() method."""
-        if self.list is None:
-            raise TypeError("not indexable")
-        return list(set(item.name for item in self.list))
-
-    def __contains__(self, key):
-        """Dictionary style __contains__ method."""
-        if self.list is None:
-            raise TypeError("not indexable")
-        return any(item.name == key for item in self.list)
-
-    def __len__(self):
-        """Dictionary style len(x) support."""
-        return len(self.keys())
-
-    def __bool__(self):
-        if self.list is None:
-            raise TypeError("Cannot be converted to bool.")
-        return bool(self.list)
-
-    def read_urlencoded(self):
-        """Internal: read data in query string format."""
-        qs = self.fp.read(self.length)
-        if not isinstance(qs, bytes):
-            raise ValueError("%s should return bytes, got %s" \
-                             % (self.fp, type(qs).__name__))
-        qs = qs.decode(self.encoding, self.errors)
-        if self.qs_on_post:
-            qs += '&' + self.qs_on_post
-        query = urllib.parse.parse_qsl(
-            qs, self.keep_blank_values, self.strict_parsing,
-            encoding=self.encoding, errors=self.errors,
-            max_num_fields=self.max_num_fields, separator=self.separator)
-        self.list = [MiniFieldStorage(key, value) for key, value in query]
-        self.skip_lines()
-
-    FieldStorageClass = None
-
-    def read_multi(self, environ, keep_blank_values, strict_parsing):
-        """Internal: read a part that is itself multipart."""
-        ib = self.innerboundary
-        if not valid_boundary(ib):
-            raise ValueError('Invalid boundary in multipart form: %r' % (ib,))
-        self.list = []
-        if self.qs_on_post:
-            query = urllib.parse.parse_qsl(
-                self.qs_on_post, self.keep_blank_values, self.strict_parsing,
-                encoding=self.encoding, errors=self.errors,
-                max_num_fields=self.max_num_fields, separator=self.separator)
-            self.list.extend(MiniFieldStorage(key, value) for key, value in query)
-
-        klass = self.FieldStorageClass or self.__class__
-        first_line = self.fp.readline() # bytes
-        if not isinstance(first_line, bytes):
-            raise ValueError("%s should return bytes, got %s" \
-                             % (self.fp, type(first_line).__name__))
-        self.bytes_read += len(first_line)
-
-        # Ensure that we consume the file until we've hit our inner boundary
-        while (first_line.strip() != (b"--" + self.innerboundary) and
-                first_line):
-            first_line = self.fp.readline()
-            self.bytes_read += len(first_line)
-
-        # Propagate max_num_fields into the sub class appropriately
-        max_num_fields = self.max_num_fields
-        if max_num_fields is not None:
-            max_num_fields -= len(self.list)
-
-        while True:
-            parser = FeedParser()
-            hdr_text = b""
-            while True:
-                data = self.fp.readline()
-                hdr_text += data
-                if not data.strip():
-                    break
-            if not hdr_text:
-                break
-            # parser takes strings, not bytes
-            self.bytes_read += len(hdr_text)
-            parser.feed(hdr_text.decode(self.encoding, self.errors))
-            headers = parser.close()
-
-            # Some clients add Content-Length for part headers, ignore them
-            if 'content-length' in headers:
-                del headers['content-length']
-
-            limit = None if self.limit is None \
-                else self.limit - self.bytes_read
-            part = klass(self.fp, headers, ib, environ, keep_blank_values,
-                         strict_parsing, limit,
-                         self.encoding, self.errors, max_num_fields, self.separator)
-
-            if max_num_fields is not None:
-                max_num_fields -= 1
-                if part.list:
-                    max_num_fields -= len(part.list)
-                if max_num_fields < 0:
-                    raise ValueError('Max number of fields exceeded')
-
-            self.bytes_read += part.bytes_read
-            self.list.append(part)
-            if part.done or self.bytes_read >= self.length > 0:
-                break
-        self.skip_lines()
-
-    def read_single(self):
-        """Internal: read an atomic part."""
-        if self.length >= 0:
-            self.read_binary()
-            self.skip_lines()
-        else:
-            self.read_lines()
-        self.file.seek(0)
-
-    bufsize = 8*1024            # I/O buffering size for copy to file
-
-    def read_binary(self):
-        """Internal: read binary data."""
-        self.file = self.make_file()
-        todo = self.length
-        if todo >= 0:
-            while todo > 0:
-                data = self.fp.read(min(todo, self.bufsize)) # bytes
-                if not isinstance(data, bytes):
-                    raise ValueError("%s should return bytes, got %s"
-                                     % (self.fp, type(data).__name__))
-                self.bytes_read += len(data)
-                if not data:
-                    self.done = -1
-                    break
-                self.file.write(data)
-                todo = todo - len(data)
-
-    def read_lines(self):
-        """Internal: read lines until EOF or outerboundary."""
-        if self._binary_file:
-            self.file = self.__file = BytesIO() # store data as bytes for files
-        else:
-            self.file = self.__file = StringIO() # as strings for other fields
-        if self.outerboundary:
-            self.read_lines_to_outerboundary()
-        else:
-            self.read_lines_to_eof()
-
-    def __write(self, line):
-        """line is always bytes, not string"""
-        if self.__file is not None:
-            if self.__file.tell() + len(line) > 1000:
-                self.file = self.make_file()
-                data = self.__file.getvalue()
-                self.file.write(data)
-                self.__file = None
-        if self._binary_file:
-            # keep bytes
-            self.file.write(line)
-        else:
-            # decode to string
-            self.file.write(line.decode(self.encoding, self.errors))
-
-    def read_lines_to_eof(self):
-        """Internal: read lines until EOF."""
-        while 1:
-            line = self.fp.readline(1<<16) # bytes
-            self.bytes_read += len(line)
-            if not line:
-                self.done = -1
-                break
-            self.__write(line)
-
-    def read_lines_to_outerboundary(self):
-        """Internal: read lines until outerboundary.
-        Data is read as bytes: boundaries and line ends must be converted
-        to bytes for comparisons.
-        """
-        next_boundary = b"--" + self.outerboundary
-        last_boundary = next_boundary + b"--"
-        delim = b""
-        last_line_lfend = True
-        _read = 0
-        while 1:
-
-            if self.limit is not None and 0 <= self.limit <= _read:
-                break
-            line = self.fp.readline(1<<16) # bytes
-            self.bytes_read += len(line)
-            _read += len(line)
-            if not line:
-                self.done = -1
-                break
-            if delim == b"\r":
-                line = delim + line
-                delim = b""
-            if line.startswith(b"--") and last_line_lfend:
-                strippedline = line.rstrip()
-                if strippedline == next_boundary:
-                    break
-                if strippedline == last_boundary:
-                    self.done = 1
-                    break
-            odelim = delim
-            if line.endswith(b"\r\n"):
-                delim = b"\r\n"
-                line = line[:-2]
-                last_line_lfend = True
-            elif line.endswith(b"\n"):
-                delim = b"\n"
-                line = line[:-1]
-                last_line_lfend = True
-            elif line.endswith(b"\r"):
-                # We may interrupt \r\n sequences if they span the 2**16
-                # byte boundary
-                delim = b"\r"
-                line = line[:-1]
-                last_line_lfend = False
-            else:
-                delim = b""
-                last_line_lfend = False
-            self.__write(odelim + line)
-
-    def skip_lines(self):
-        """Internal: skip lines until outer boundary if defined."""
-        if not self.outerboundary or self.done:
-            return
-        next_boundary = b"--" + self.outerboundary
-        last_boundary = next_boundary + b"--"
-        last_line_lfend = True
-        while True:
-            line = self.fp.readline(1<<16)
-            self.bytes_read += len(line)
-            if not line:
-                self.done = -1
-                break
-            if line.endswith(b"--") and last_line_lfend:
-                strippedline = line.strip()
-                if strippedline == next_boundary:
-                    break
-                if strippedline == last_boundary:
-                    self.done = 1
-                    break
-            last_line_lfend = line.endswith(b'\n')
-
-    def make_file(self):
-        """Overridable: return a readable & writable file.
-
-        The file will be used as follows:
-        - data is written to it
-        - seek(0)
-        - data is read from it
-
-        The file is opened in binary mode for files, in text mode
-        for other fields
-
-        This version opens a temporary file for reading and writing,
-        and immediately deletes (unlinks) it.  The trick (on Unix!) is
-        that the file can still be used, but it can't be opened by
-        another process, and it will automatically be deleted when it
-        is closed or when the current process terminates.
-
-        If you want a more permanent file, you derive a class which
-        overrides this method.  If you want a visible temporary file
-        that is nevertheless automatically deleted when the script
-        terminates, try defining a __del__ method in a derived class
-        which unlinks the temporary files you have created.
-
-        """
-        if self._binary_file:
-            return tempfile.TemporaryFile("wb+")
-        else:
-            return tempfile.TemporaryFile("w+",
-                encoding=self.encoding, newline = '\n')
-
-
-# Test/debug code
-# ===============
-
-def test(environ=os.environ):
-    """Robust test CGI script, usable as main program.
-
-    Write minimal HTTP headers and dump all information provided to
-    the script in HTML form.
-
-    """
-    print("Content-type: text/html")
-    print()
-    sys.stderr = sys.stdout
-    try:
-        form = FieldStorage()   # Replace with other classes to test those
-        print_directory()
-        print_arguments()
-        print_form(form)
-        print_environ(environ)
-        print_environ_usage()
-        def f():
-            exec("testing print_exception() -- <I>italics?</I>")
-        def g(f=f):
-            f()
-        print("<H3>What follows is a test, not an actual exception:</H3>")
-        g()
-    except:
-        print_exception()
-
-    print("<H1>Second try with a small maxlen...</H1>")
-
-    global maxlen
-    maxlen = 50
-    try:
-        form = FieldStorage()   # Replace with other classes to test those
-        print_directory()
-        print_arguments()
-        print_form(form)
-        print_environ(environ)
-    except:
-        print_exception()
-
-def print_exception(type=None, value=None, tb=None, limit=None):
-    if type is None:
-        type, value, tb = sys.exc_info()
-    import traceback
-    print()
-    print("<H3>Traceback (most recent call last):</H3>")
-    list = traceback.format_tb(tb, limit) + \
-           traceback.format_exception_only(type, value)
-    print("<PRE>%s<B>%s</B></PRE>" % (
-        html.escape("".join(list[:-1])),
-        html.escape(list[-1]),
-        ))
-    del tb
-
-def print_environ(environ=os.environ):
-    """Dump the shell environment as HTML."""
-    keys = sorted(environ.keys())
-    print()
-    print("<H3>Shell Environment:</H3>")
-    print("<DL>")
-    for key in keys:
-        print("<DT>", html.escape(key), "<DD>", html.escape(environ[key]))
-    print("</DL>")
-    print()
-
-def print_form(form):
-    """Dump the contents of a form as HTML."""
-    keys = sorted(form.keys())
-    print()
-    print("<H3>Form Contents:</H3>")
-    if not keys:
-        print("<P>No form fields.")
-    print("<DL>")
-    for key in keys:
-        print("<DT>" + html.escape(key) + ":", end=' ')
-        value = form[key]
-        print("<i>" + html.escape(repr(type(value))) + "</i>")
-        print("<DD>" + html.escape(repr(value)))
-    print("</DL>")
-    print()
-
-def print_directory():
-    """Dump the current directory as HTML."""
-    print()
-    print("<H3>Current Working Directory:</H3>")
-    try:
-        pwd = os.getcwd()
-    except OSError as msg:
-        print("OSError:", html.escape(str(msg)))
-    else:
-        print(html.escape(pwd))
-    print()
-
-def print_arguments():
-    print()
-    print("<H3>Command Line Arguments:</H3>")
-    print()
-    print(sys.argv)
-    print()
-
-def print_environ_usage():
-    """Dump a list of environment variables used by CGI as HTML."""
-    print("""
-<H3>These environment variables could have been set:</H3>
-<UL>
-<LI>AUTH_TYPE
-<LI>CONTENT_LENGTH
-<LI>CONTENT_TYPE
-<LI>DATE_GMT
-<LI>DATE_LOCAL
-<LI>DOCUMENT_NAME
-<LI>DOCUMENT_ROOT
-<LI>DOCUMENT_URI
-<LI>GATEWAY_INTERFACE
-<LI>LAST_MODIFIED
-<LI>PATH
-<LI>PATH_INFO
-<LI>PATH_TRANSLATED
-<LI>QUERY_STRING
-<LI>REMOTE_ADDR
-<LI>REMOTE_HOST
-<LI>REMOTE_IDENT
-<LI>REMOTE_USER
-<LI>REQUEST_METHOD
-<LI>SCRIPT_NAME
-<LI>SERVER_NAME
-<LI>SERVER_PORT
-<LI>SERVER_PROTOCOL
-<LI>SERVER_ROOT
-<LI>SERVER_SOFTWARE
-</UL>
-In addition, HTTP headers sent by the server may be passed in the
-environment as well.  Here are some common variable names:
-<UL>
-<LI>HTTP_ACCEPT
-<LI>HTTP_CONNECTION
-<LI>HTTP_HOST
-<LI>HTTP_PRAGMA
-<LI>HTTP_REFERER
-<LI>HTTP_USER_AGENT
-</UL>
-""")
-
-
-# Utilities
-# =========
-
-def valid_boundary(s):
-    import re
-    if isinstance(s, bytes):
-        _vb_pattern = b"^[ -~]{0,200}[!-~]$"
-    else:
-        _vb_pattern = "^[ -~]{0,200}[!-~]$"
-    return re.match(_vb_pattern, s)
-
-# Invoke mainline
-# ===============
-
-# Call test() when this file is run as a script (not imported as a module)
-if __name__ == '__main__':
-    test()
diff --git a/Lib/cgitb.py b/Lib/cgitb.py
deleted file mode 100644
index f6b97f25c59de9..00000000000000
--- a/Lib/cgitb.py
+++ /dev/null
@@ -1,332 +0,0 @@
-"""More comprehensive traceback formatting for Python scripts.
-
-To enable this module, do:
-
-    import cgitb; cgitb.enable()
-
-at the top of your script.  The optional arguments to enable() are:
-
-    display     - if true, tracebacks are displayed in the web browser
-    logdir      - if set, tracebacks are written to files in this directory
-    context     - number of lines of source code to show for each stack frame
-    format      - 'text' or 'html' controls the output format
-
-By default, tracebacks are displayed but not saved, the context is 5 lines
-and the output format is 'html' (for backwards compatibility with the
-original use of this module)
-
-Alternatively, if you have caught an exception and want cgitb to display it
-for you, call cgitb.handler().  The optional argument to handler() is a
-3-item tuple (etype, evalue, etb) just like the value of sys.exc_info().
-The default handler displays output as HTML.
-
-"""
-import inspect
-import keyword
-import linecache
-import os
-import pydoc
-import sys
-import tempfile
-import time
-import tokenize
-import traceback
-import warnings
-from html import escape as html_escape
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-
-def reset():
-    """Return a string that resets the CGI and browser to a known state."""
-    return '''<!--: spam
-Content-Type: text/html
-
-<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> -->
-<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> --> -->
-</font> </font> </font> </script> </object> </blockquote> </pre>
-</table> </table> </table> </table> </table> </font> </font> </font>'''
-
-__UNDEF__ = []                          # a special sentinel object
-def small(text):
-    if text:
-        return '<small>' + text + '</small>'
-    else:
-        return ''
-
-def strong(text):
-    if text:
-        return '<strong>' + text + '</strong>'
-    else:
-        return ''
-
-def grey(text):
-    if text:
-        return '<font color="#909090">' + text + '</font>'
-    else:
-        return ''
-
-def lookup(name, frame, locals):
-    """Find the value for a given name in the given environment."""
-    if name in locals:
-        return 'local', locals[name]
-    if name in frame.f_globals:
-        return 'global', frame.f_globals[name]
-    if '__builtins__' in frame.f_globals:
-        builtins = frame.f_globals['__builtins__']
-        if isinstance(builtins, dict):
-            if name in builtins:
-                return 'builtin', builtins[name]
-        else:
-            if hasattr(builtins, name):
-                return 'builtin', getattr(builtins, name)
-    return None, __UNDEF__
-
-def scanvars(reader, frame, locals):
-    """Scan one logical line of Python and look up values of variables used."""
-    vars, lasttoken, parent, prefix, value = [], None, None, '', __UNDEF__
-    for ttype, token, start, end, line in tokenize.generate_tokens(reader):
-        if ttype == tokenize.NEWLINE: break
-        if ttype == tokenize.NAME and token not in keyword.kwlist:
-            if lasttoken == '.':
-                if parent is not __UNDEF__:
-                    value = getattr(parent, token, __UNDEF__)
-                    vars.append((prefix + token, prefix, value))
-            else:
-                where, value = lookup(token, frame, locals)
-                vars.append((token, where, value))
-        elif token == '.':
-            prefix += lasttoken + '.'
-            parent = value
-        else:
-            parent, prefix = None, ''
-        lasttoken = token
-    return vars
-
-def html(einfo, context=5):
-    """Return a nice HTML document describing a given traceback."""
-    etype, evalue, etb = einfo
-    if isinstance(etype, type):
-        etype = etype.__name__
-    pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
-    date = time.ctime(time.time())
-    head = f'''
-<body bgcolor="#f0f0f8">
-<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
-<tr bgcolor="#6622aa">
-<td valign=bottom>&nbsp;<br>
-<font color="#ffffff" face="helvetica, arial">&nbsp;<br>
-<big><big><strong>{html_escape(str(etype))}</strong></big></big></font></td>
-<td align=right valign=bottom>
-<font color="#ffffff" face="helvetica, arial">{pyver}<br>{date}</font></td>
-</tr></table>
-<p>A problem occurred in a Python script.  Here is the sequence of
-function calls leading up to the error, in the order they occurred.</p>'''
-
-    indent = '<tt>' + small('&nbsp;' * 5) + '&nbsp;</tt>'
-    frames = []
-    records = inspect.getinnerframes(etb, context)
-    for frame, file, lnum, func, lines, index in records:
-        if file:
-            file = os.path.abspath(file)
-            link = '<a href="file://%s">%s</a>' % (file, pydoc.html.escape(file))
-        else:
-            file = link = '?'
-        args, varargs, varkw, locals = inspect.getargvalues(frame)
-        call = ''
-        if func != '?':
-            call = 'in ' + strong(pydoc.html.escape(func))
-            if func != "<module>":
-                call += inspect.formatargvalues(args, varargs, varkw, locals,
-                    formatvalue=lambda value: '=' + pydoc.html.repr(value))
-
-        highlight = {}
-        def reader(lnum=[lnum]):
-            highlight[lnum[0]] = 1
-            try: return linecache.getline(file, lnum[0])
-            finally: lnum[0] += 1
-        vars = scanvars(reader, frame, locals)
-
-        rows = ['<tr><td bgcolor="#d8bbff">%s%s %s</td></tr>' %
-                ('<big>&nbsp;</big>', link, call)]
-        if index is not None:
-            i = lnum - index
-            for line in lines:
-                num = small('&nbsp;' * (5-len(str(i))) + str(i)) + '&nbsp;'
-                if i in highlight:
-                    line = '<tt>=&gt;%s%s</tt>' % (num, pydoc.html.preformat(line))
-                    rows.append('<tr><td bgcolor="#ffccee">%s</td></tr>' % line)
-                else:
-                    line = '<tt>&nbsp;&nbsp;%s%s</tt>' % (num, pydoc.html.preformat(line))
-                    rows.append('<tr><td>%s</td></tr>' % grey(line))
-                i += 1
-
-        done, dump = {}, []
-        for name, where, value in vars:
-            if name in done: continue
-            done[name] = 1
-            if value is not __UNDEF__:
-                if where in ('global', 'builtin'):
-                    name = ('<em>%s</em> ' % where) + strong(name)
-                elif where == 'local':
-                    name = strong(name)
-                else:
-                    name = where + strong(name.split('.')[-1])
-                dump.append('%s&nbsp;= %s' % (name, pydoc.html.repr(value)))
-            else:
-                dump.append(name + ' <em>undefined</em>')
-
-        rows.append('<tr><td>%s</td></tr>' % small(grey(', '.join(dump))))
-        frames.append('''
-<table width="100%%" cellspacing=0 cellpadding=0 border=0>
-%s</table>''' % '\n'.join(rows))
-
-    exception = ['<p>%s: %s' % (strong(pydoc.html.escape(str(etype))),
-                                pydoc.html.escape(str(evalue)))]
-    for name in dir(evalue):
-        if name[:1] == '_': continue
-        value = pydoc.html.repr(getattr(evalue, name))
-        exception.append('\n<br>%s%s&nbsp;=\n%s' % (indent, name, value))
-
-    return head + ''.join(frames) + ''.join(exception) + '''
-
-
-<!-- The above is a description of an error in a Python program, formatted
-     for a web browser because the 'cgitb' module was enabled.  In case you
-     are not reading this in a web browser, here is the original traceback:
-
-%s
--->
-''' % pydoc.html.escape(
-          ''.join(traceback.format_exception(etype, evalue, etb)))
-
-def text(einfo, context=5):
-    """Return a plain text document describing a given traceback."""
-    etype, evalue, etb = einfo
-    if isinstance(etype, type):
-        etype = etype.__name__
-    pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
-    date = time.ctime(time.time())
-    head = "%s\n%s\n%s\n" % (str(etype), pyver, date) + '''
-A problem occurred in a Python script.  Here is the sequence of
-function calls leading up to the error, in the order they occurred.
-'''
-
-    frames = []
-    records = inspect.getinnerframes(etb, context)
-    for frame, file, lnum, func, lines, index in records:
-        file = file and os.path.abspath(file) or '?'
-        args, varargs, varkw, locals = inspect.getargvalues(frame)
-        call = ''
-        if func != '?':
-            call = 'in ' + func
-            if func != "<module>":
-                call += inspect.formatargvalues(args, varargs, varkw, locals,
-                    formatvalue=lambda value: '=' + pydoc.text.repr(value))
-
-        highlight = {}
-        def reader(lnum=[lnum]):
-            highlight[lnum[0]] = 1
-            try: return linecache.getline(file, lnum[0])
-            finally: lnum[0] += 1
-        vars = scanvars(reader, frame, locals)
-
-        rows = [' %s %s' % (file, call)]
-        if index is not None:
-            i = lnum - index
-            for line in lines:
-                num = '%5d ' % i
-                rows.append(num+line.rstrip())
-                i += 1
-
-        done, dump = {}, []
-        for name, where, value in vars:
-            if name in done: continue
-            done[name] = 1
-            if value is not __UNDEF__:
-                if where == 'global': name = 'global ' + name
-                elif where != 'local': name = where + name.split('.')[-1]
-                dump.append('%s = %s' % (name, pydoc.text.repr(value)))
-            else:
-                dump.append(name + ' undefined')
-
-        rows.append('\n'.join(dump))
-        frames.append('\n%s\n' % '\n'.join(rows))
-
-    exception = ['%s: %s' % (str(etype), str(evalue))]
-    for name in dir(evalue):
-        value = pydoc.text.repr(getattr(evalue, name))
-        exception.append('\n%s%s = %s' % (" "*4, name, value))
-
-    return head + ''.join(frames) + ''.join(exception) + '''
-
-The above is a description of an error in a Python program.  Here is
-the original traceback:
-
-%s
-''' % ''.join(traceback.format_exception(etype, evalue, etb))
-
-class Hook:
-    """A hook to replace sys.excepthook that shows tracebacks in HTML."""
-
-    def __init__(self, display=1, logdir=None, context=5, file=None,
-                 format="html"):
-        self.display = display          # send tracebacks to browser if true
-        self.logdir = logdir            # log tracebacks to files if not None
-        self.context = context          # number of source code lines per frame
-        self.file = file or sys.stdout  # place to send the output
-        self.format = format
-
-    def __call__(self, etype, evalue, etb):
-        self.handle((etype, evalue, etb))
-
-    def handle(self, info=None):
-        info = info or sys.exc_info()
-        if self.format == "html":
-            self.file.write(reset())
-
-        formatter = (self.format=="html") and html or text
-        plain = False
-        try:
-            doc = formatter(info, self.context)
-        except:                         # just in case something goes wrong
-            doc = ''.join(traceback.format_exception(*info))
-            plain = True
-
-        if self.display:
-            if plain:
-                doc = pydoc.html.escape(doc)
-                self.file.write('<pre>' + doc + '</pre>\n')
-            else:
-                self.file.write(doc + '\n')
-        else:
-            self.file.write('<p>A problem occurred in a Python script.\n')
-
-        if self.logdir is not None:
-            suffix = ['.txt', '.html'][self.format=="html"]
-            (fd, path) = tempfile.mkstemp(suffix=suffix, dir=self.logdir)
-
-            try:
-                with os.fdopen(fd, 'w') as file:
-                    file.write(doc)
-                msg = '%s contains the description of this error.' % path
-            except:
-                msg = 'Tried to save traceback to %s, but failed.' % path
-
-            if self.format == 'html':
-                self.file.write('<p>%s</p>\n' % msg)
-            else:
-                self.file.write(msg + '\n')
-        try:
-            self.file.flush()
-        except: pass
-
-handler = Hook().handle
-def enable(display=1, logdir=None, context=5, format="html"):
-    """Install an exception handler that formats tracebacks as HTML.
-
-    The optional argument 'display' can be set to 0 to suppress sending the
-    traceback to the browser, and 'logdir' can be set to a directory to cause
-    tracebacks to be written to files there."""
-    sys.excepthook = Hook(display=display, logdir=logdir,
-                          context=context, format=format)
diff --git a/Lib/chunk.py b/Lib/chunk.py
deleted file mode 100644
index 618781efd11e71..00000000000000
--- a/Lib/chunk.py
+++ /dev/null
@@ -1,173 +0,0 @@
-"""Simple class to read IFF chunks.
-
-An IFF chunk (used in formats such as AIFF, TIFF, RMFF (RealMedia File
-Format)) has the following structure:
-
-+----------------+
-| ID (4 bytes)   |
-+----------------+
-| size (4 bytes) |
-+----------------+
-| data           |
-| ...            |
-+----------------+
-
-The ID is a 4-byte string which identifies the type of chunk.
-
-The size field (a 32-bit value, encoded using big-endian byte order)
-gives the size of the whole chunk, including the 8-byte header.
-
-Usually an IFF-type file consists of one or more chunks.  The proposed
-usage of the Chunk class defined here is to instantiate an instance at
-the start of each chunk and read from the instance until it reaches
-the end, after which a new instance can be instantiated.  At the end
-of the file, creating a new instance will fail with an EOFError
-exception.
-
-Usage:
-while True:
-    try:
-        chunk = Chunk(file)
-    except EOFError:
-        break
-    chunktype = chunk.getname()
-    while True:
-        data = chunk.read(nbytes)
-        if not data:
-            pass
-        # do something with data
-
-The interface is file-like.  The implemented methods are:
-read, close, seek, tell, isatty.
-Extra methods are: skip() (called by close, skips to the end of the chunk),
-getname() (returns the name (ID) of the chunk)
-
-The __init__ method has one required argument, a file-like object
-(including a chunk instance), and one optional argument, a flag which
-specifies whether or not chunks are aligned on 2-byte boundaries.  The
-default is 1, i.e. aligned.
-"""
-
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-class Chunk:
-    def __init__(self, file, align=True, bigendian=True, inclheader=False):
-        import struct
-        self.closed = False
-        self.align = align      # whether to align to word (2-byte) boundaries
-        if bigendian:
-            strflag = '>'
-        else:
-            strflag = '<'
-        self.file = file
-        self.chunkname = file.read(4)
-        if len(self.chunkname) < 4:
-            raise EOFError
-        try:
-            self.chunksize = struct.unpack_from(strflag+'L', file.read(4))[0]
-        except struct.error:
-            raise EOFError from None
-        if inclheader:
-            self.chunksize = self.chunksize - 8 # subtract header
-        self.size_read = 0
-        try:
-            self.offset = self.file.tell()
-        except (AttributeError, OSError):
-            self.seekable = False
-        else:
-            self.seekable = True
-
-    def getname(self):
-        """Return the name (ID) of the current chunk."""
-        return self.chunkname
-
-    def getsize(self):
-        """Return the size of the current chunk."""
-        return self.chunksize
-
-    def close(self):
-        if not self.closed:
-            try:
-                self.skip()
-            finally:
-                self.closed = True
-
-    def isatty(self):
-        if self.closed:
-            raise ValueError("I/O operation on closed file")
-        return False
-
-    def seek(self, pos, whence=0):
-        """Seek to specified position into the chunk.
-        Default position is 0 (start of chunk).
-        If the file is not seekable, this will result in an error.
-        """
-
-        if self.closed:
-            raise ValueError("I/O operation on closed file")
-        if not self.seekable:
-            raise OSError("cannot seek")
-        if whence == 1:
-            pos = pos + self.size_read
-        elif whence == 2:
-            pos = pos + self.chunksize
-        if pos < 0 or pos > self.chunksize:
-            raise RuntimeError
-        self.file.seek(self.offset + pos, 0)
-        self.size_read = pos
-
-    def tell(self):
-        if self.closed:
-            raise ValueError("I/O operation on closed file")
-        return self.size_read
-
-    def read(self, size=-1):
-        """Read at most size bytes from the chunk.
-        If size is omitted or negative, read until the end
-        of the chunk.
-        """
-
-        if self.closed:
-            raise ValueError("I/O operation on closed file")
-        if self.size_read >= self.chunksize:
-            return b''
-        if size < 0:
-            size = self.chunksize - self.size_read
-        if size > self.chunksize - self.size_read:
-            size = self.chunksize - self.size_read
-        data = self.file.read(size)
-        self.size_read = self.size_read + len(data)
-        if self.size_read == self.chunksize and \
-           self.align and \
-           (self.chunksize & 1):
-            dummy = self.file.read(1)
-            self.size_read = self.size_read + len(dummy)
-        return data
-
-    def skip(self):
-        """Skip the rest of the chunk.
-        If you are not interested in the contents of the chunk,
-        this method should be called so that the file points to
-        the start of the next chunk.
-        """
-
-        if self.closed:
-            raise ValueError("I/O operation on closed file")
-        if self.seekable:
-            try:
-                n = self.chunksize - self.size_read
-                # maybe fix alignment
-                if self.align and (self.chunksize & 1):
-                    n = n + 1
-                self.file.seek(n, 1)
-                self.size_read = self.size_read + n
-                return
-            except OSError:
-                pass
-        while self.size_read < self.chunksize:
-            n = min(8192, self.chunksize - self.size_read)
-            dummy = self.read(n)
-            if not dummy:
-                raise EOFError
diff --git a/Lib/cmd.py b/Lib/cmd.py
index 88ee7d3ddc4694..2e358d6cd5a02d 100644
--- a/Lib/cmd.py
+++ b/Lib/cmd.py
@@ -108,7 +108,15 @@ def cmdloop(self, intro=None):
                 import readline
                 self.old_completer = readline.get_completer()
                 readline.set_completer(self.complete)
-                readline.parse_and_bind(self.completekey+": complete")
+                if readline.backend == "editline":
+                    if self.completekey == 'tab':
+                        # libedit uses "^I" instead of "tab"
+                        command_string = "bind ^I rl_complete"
+                    else:
+                        command_string = f"bind {self.completekey} rl_complete"
+                else:
+                    command_string = f"{self.completekey}: complete"
+                readline.parse_and_bind(command_string)
             except ImportError:
                 pass
         try:
@@ -210,9 +218,8 @@ def onecmd(self, line):
         if cmd == '':
             return self.default(line)
         else:
-            try:
-                func = getattr(self, 'do_' + cmd)
-            except AttributeError:
+            func = getattr(self, 'do_' + cmd, None)
+            if func is None:
                 return self.default(line)
             return func(arg)
 
diff --git a/Lib/code.py b/Lib/code.py
index 2bd5fa3e795a61..f4aecddeca7813 100644
--- a/Lib/code.py
+++ b/Lib/code.py
@@ -5,6 +5,7 @@
 # Inspired by similar code by Jeff Epler and Fredrik Lundh.
 
 
+import builtins
 import sys
 import traceback
 from codeop import CommandCompiler, compile_command
@@ -169,7 +170,7 @@ class InteractiveConsole(InteractiveInterpreter):
 
     """
 
-    def __init__(self, locals=None, filename="<console>"):
+    def __init__(self, locals=None, filename="<console>", local_exit=False):
         """Constructor.
 
         The optional locals argument will be passed to the
@@ -181,6 +182,7 @@ def __init__(self, locals=None, filename="<console>"):
         """
         InteractiveInterpreter.__init__(self, locals)
         self.filename = filename
+        self.local_exit = local_exit
         self.resetbuffer()
 
     def resetbuffer(self):
@@ -219,27 +221,64 @@ def interact(self, banner=None, exitmsg=None):
         elif banner:
             self.write("%s\n" % str(banner))
         more = 0
-        while 1:
-            try:
-                if more:
-                    prompt = sys.ps2
-                else:
-                    prompt = sys.ps1
+
+        # When the user uses exit() or quit() in their interactive shell
+        # they probably just want to exit the created shell, not the whole
+        # process. exit and quit in builtins closes sys.stdin which makes
+        # it super difficult to restore
+        #
+        # When self.local_exit is True, we overwrite the builtins so
+        # exit() and quit() only raises SystemExit and we can catch that
+        # to only exit the interactive shell
+
+        _exit = None
+        _quit = None
+
+        if self.local_exit:
+            if hasattr(builtins, "exit"):
+                _exit = builtins.exit
+                builtins.exit = Quitter("exit")
+
+            if hasattr(builtins, "quit"):
+                _quit = builtins.quit
+                builtins.quit = Quitter("quit")
+
+        try:
+            while True:
                 try:
-                    line = self.raw_input(prompt)
-                except EOFError:
-                    self.write("\n")
-                    break
-                else:
-                    more = self.push(line)
-            except KeyboardInterrupt:
-                self.write("\nKeyboardInterrupt\n")
-                self.resetbuffer()
-                more = 0
-        if exitmsg is None:
-            self.write('now exiting %s...\n' % self.__class__.__name__)
-        elif exitmsg != '':
-            self.write('%s\n' % exitmsg)
+                    if more:
+                        prompt = sys.ps2
+                    else:
+                        prompt = sys.ps1
+                    try:
+                        line = self.raw_input(prompt)
+                    except EOFError:
+                        self.write("\n")
+                        break
+                    else:
+                        more = self.push(line)
+                except KeyboardInterrupt:
+                    self.write("\nKeyboardInterrupt\n")
+                    self.resetbuffer()
+                    more = 0
+                except SystemExit as e:
+                    if self.local_exit:
+                        self.write("\n")
+                        break
+                    else:
+                        raise e
+        finally:
+            # restore exit and quit in builtins if they were modified
+            if _exit is not None:
+                builtins.exit = _exit
+
+            if _quit is not None:
+                builtins.quit = _quit
+
+            if exitmsg is None:
+                self.write('now exiting %s...\n' % self.__class__.__name__)
+            elif exitmsg != '':
+                self.write('%s\n' % exitmsg)
 
     def push(self, line):
         """Push a line to the interpreter.
@@ -276,8 +315,22 @@ def raw_input(self, prompt=""):
         return input(prompt)
 
 
+class Quitter:
+    def __init__(self, name):
+        self.name = name
+        if sys.platform == "win32":
+            self.eof = 'Ctrl-Z plus Return'
+        else:
+            self.eof = 'Ctrl-D (i.e. EOF)'
+
+    def __repr__(self):
+        return f'Use {self.name} or {self.eof} to exit'
+
+    def __call__(self, code=None):
+        raise SystemExit(code)
+
 
-def interact(banner=None, readfunc=None, local=None, exitmsg=None):
+def interact(banner=None, readfunc=None, local=None, exitmsg=None, local_exit=False):
     """Closely emulate the interactive Python interpreter.
 
     This is a backwards compatible interface to the InteractiveConsole
@@ -290,9 +343,10 @@ def interact(banner=None, readfunc=None, local=None, exitmsg=None):
     readfunc -- if not None, replaces InteractiveConsole.raw_input()
     local -- passed to InteractiveInterpreter.__init__()
     exitmsg -- passed to InteractiveConsole.interact()
+    local_exit -- passed to InteractiveConsole.__init__()
 
     """
-    console = InteractiveConsole(local)
+    console = InteractiveConsole(local, local_exit=local_exit)
     if readfunc is not None:
         console.raw_input = readfunc
     else:
diff --git a/Lib/codecs.py b/Lib/codecs.py
index c1c55d8afef389..9b35b6127dd01c 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -111,6 +111,9 @@ def __repr__(self):
                 (self.__class__.__module__, self.__class__.__qualname__,
                  self.name, id(self))
 
+    def __getnewargs__(self):
+        return tuple(self)
+
 class Codec:
 
     """ Defines the interface for stateless encoders/decoders.
@@ -414,6 +417,9 @@ def __enter__(self):
     def __exit__(self, type, value, tb):
         self.stream.close()
 
+    def __reduce_ex__(self, proto):
+        raise TypeError("can't serialize %s" % self.__class__.__name__)
+
 ###
 
 class StreamReader(Codec):
@@ -663,6 +669,9 @@ def __enter__(self):
     def __exit__(self, type, value, tb):
         self.stream.close()
 
+    def __reduce_ex__(self, proto):
+        raise TypeError("can't serialize %s" % self.__class__.__name__)
+
 ###
 
 class StreamReaderWriter:
@@ -750,6 +759,9 @@ def __enter__(self):
     def __exit__(self, type, value, tb):
         self.stream.close()
 
+    def __reduce_ex__(self, proto):
+        raise TypeError("can't serialize %s" % self.__class__.__name__)
+
 ###
 
 class StreamRecoder:
@@ -866,6 +878,9 @@ def __enter__(self):
     def __exit__(self, type, value, tb):
         self.stream.close()
 
+    def __reduce_ex__(self, proto):
+        raise TypeError("can't serialize %s" % self.__class__.__name__)
+
 ### Shortcuts
 
 def open(filename, mode='r', encoding=None, errors='strict', buffering=-1):
diff --git a/Lib/codeop.py b/Lib/codeop.py
index 2213b69f231f92..91146be2c438e2 100644
--- a/Lib/codeop.py
+++ b/Lib/codeop.py
@@ -70,20 +70,14 @@ def _maybe_compile(compiler, source, filename, symbol):
                     return None
                 # fallthrough
 
-    return compiler(source, filename, symbol)
+    return compiler(source, filename, symbol, incomplete_input=False)
 
-
-def _is_syntax_error(err1, err2):
-    rep1 = repr(err1)
-    rep2 = repr(err2)
-    if "was never closed" in rep1 and "was never closed" in rep2:
-        return False
-    if rep1 == rep2:
-        return True
-    return False
-
-def _compile(source, filename, symbol):
-    return compile(source, filename, symbol, PyCF_DONT_IMPLY_DEDENT | PyCF_ALLOW_INCOMPLETE_INPUT)
+def _compile(source, filename, symbol, incomplete_input=True):
+    flags = 0
+    if incomplete_input:
+        flags |= PyCF_ALLOW_INCOMPLETE_INPUT
+        flags |= PyCF_DONT_IMPLY_DEDENT
+    return compile(source, filename, symbol, flags)
 
 def compile_command(source, filename="<input>", symbol="single"):
     r"""Compile a command and determine whether it is incomplete.
@@ -114,8 +108,12 @@ class Compile:
     def __init__(self):
         self.flags = PyCF_DONT_IMPLY_DEDENT | PyCF_ALLOW_INCOMPLETE_INPUT
 
-    def __call__(self, source, filename, symbol):
-        codeob = compile(source, filename, symbol, self.flags, True)
+    def __call__(self, source, filename, symbol, **kwargs):
+        flags = self.flags
+        if kwargs.get('incomplete_input', True) is False:
+            flags &= ~PyCF_DONT_IMPLY_DEDENT
+            flags &= ~PyCF_ALLOW_INCOMPLETE_INPUT
+        codeob = compile(source, filename, symbol, flags, True)
         for feature in _features:
             if codeob.co_flags & feature.compiler_flag:
                 self.flags |= feature.compiler_flag
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index 03ca2d7e18f6f0..2e527dfd810c43 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -95,17 +95,19 @@ class OrderedDict(dict):
     # Individual links are kept alive by the hard reference in self.__map.
     # Those hard references disappear when a key is deleted from an OrderedDict.
 
+    def __new__(cls, /, *args, **kwds):
+        "Create the ordered dict object and set up the underlying structures."
+        self = dict.__new__(cls)
+        self.__hardroot = _Link()
+        self.__root = root = _proxy(self.__hardroot)
+        root.prev = root.next = root
+        self.__map = {}
+        return self
+
     def __init__(self, other=(), /, **kwds):
         '''Initialize an ordered dictionary.  The signature is the same as
         regular dictionaries.  Keyword argument order is preserved.
         '''
-        try:
-            self.__root
-        except AttributeError:
-            self.__hardroot = _Link()
-            self.__root = root = _proxy(self.__hardroot)
-            root.prev = root.next = root
-            self.__map = {}
         self.__update(other, **kwds)
 
     def __setitem__(self, key, value,
@@ -455,7 +457,7 @@ def _make(cls, iterable):
     def _replace(self, /, **kwds):
         result = self._make(_map(kwds.pop, field_names, self))
         if kwds:
-            raise ValueError(f'Got unexpected field names: {list(kwds)!r}')
+            raise TypeError(f'Got unexpected field names: {list(kwds)!r}')
         return result
 
     _replace.__doc__ = (f'Return a new {typename} object replacing specified '
@@ -493,6 +495,7 @@ def __getnewargs__(self):
         '_field_defaults': field_defaults,
         '__new__': __new__,
         '_make': _make,
+        '__replace__': _replace,
         '_replace': _replace,
         '__repr__': __repr__,
         '_asdict': _asdict,
diff --git a/Lib/colorsys.py b/Lib/colorsys.py
index 9bdc83e3772603..bc897bd0f99298 100644
--- a/Lib/colorsys.py
+++ b/Lib/colorsys.py
@@ -83,7 +83,7 @@ def rgb_to_hls(r, g, b):
     if l <= 0.5:
         s = rangec / sumc
     else:
-        s = rangec / (2.0-sumc)
+        s = rangec / (2.0-maxc-minc)  # Not always 2.0-sumc: gh-106498.
     rc = (maxc-r) / rangec
     gc = (maxc-g) / rangec
     bc = (maxc-b) / rangec
diff --git a/Lib/compileall.py b/Lib/compileall.py
index d394156cedc4e7..9b53086bf41380 100644
--- a/Lib/compileall.py
+++ b/Lib/compileall.py
@@ -172,13 +172,13 @@ def compile_file(fullname, ddir=None, force=False, rx=None, quiet=0,
     if stripdir is not None:
         fullname_parts = fullname.split(os.path.sep)
         stripdir_parts = stripdir.split(os.path.sep)
-        ddir_parts = list(fullname_parts)
 
-        for spart, opart in zip(stripdir_parts, fullname_parts):
-            if spart == opart:
-                ddir_parts.remove(spart)
-
-        dfile = os.path.join(*ddir_parts)
+        if stripdir_parts != fullname_parts[:len(stripdir_parts)]:
+            if quiet < 2:
+                print("The stripdir path {!r} is not a valid prefix for "
+                      "source path {!r}; ignoring".format(stripdir, fullname))
+        else:
+            dfile = os.path.join(*fullname_parts[len(stripdir_parts):])
 
     if prependdir is not None:
         if dfile is None:
diff --git a/Lib/concurrent/futures/process.py b/Lib/concurrent/futures/process.py
index 816edab99f63e3..ffaffdb8b3d0aa 100644
--- a/Lib/concurrent/futures/process.py
+++ b/Lib/concurrent/futures/process.py
@@ -71,6 +71,11 @@ def __init__(self):
         self._reader, self._writer = mp.Pipe(duplex=False)
 
     def close(self):
+        # Please note that we do not take the shutdown lock when
+        # calling clear() (to avoid deadlocking) so this method can
+        # only be called safely from the same thread as all calls to
+        # clear() even if you hold the shutdown lock. Otherwise we
+        # might try to read from the closed pipe.
         if not self._closed:
             self._closed = True
             self._writer.close()
@@ -336,7 +341,14 @@ def run(self):
         # Main loop for the executor manager thread.
 
         while True:
-            self.add_call_item_to_queue()
+            # gh-109047: During Python finalization, self.call_queue.put()
+            # creation of a thread can fail with RuntimeError.
+            try:
+                self.add_call_item_to_queue()
+            except BaseException as exc:
+                cause = format_exception(exc)
+                self.terminate_broken(cause)
+                return
 
             result_item, is_broken, cause = self.wait_result_broken_or_wakeup()
 
@@ -420,14 +432,18 @@ def wait_result_broken_or_wakeup(self):
             try:
                 result_item = result_reader.recv()
                 is_broken = False
-            except BaseException as e:
-                cause = format_exception(type(e), e, e.__traceback__)
+            except BaseException as exc:
+                cause = format_exception(exc)
 
         elif wakeup_reader in ready:
             is_broken = False
 
-        with self.shutdown_lock:
-            self.thread_wakeup.clear()
+        # No need to hold the _shutdown_lock here because:
+        # 1. we're the only thread to use the wakeup reader
+        # 2. we're also the only thread to call thread_wakeup.close()
+        # 3. we want to avoid a possible deadlock when both reader and writer
+        #    would block (gh-105829)
+        self.thread_wakeup.clear()
 
         return result_item, is_broken, cause
 
@@ -435,24 +451,14 @@ def process_result_item(self, result_item):
         # Process the received a result_item. This can be either the PID of a
         # worker that exited gracefully or a _ResultItem
 
-        if isinstance(result_item, int):
-            # Clean shutdown of a worker using its PID
-            # (avoids marking the executor broken)
-            assert self.is_shutting_down()
-            p = self.processes.pop(result_item)
-            p.join()
-            if not self.processes:
-                self.join_executor_internals()
-                return
-        else:
-            # Received a _ResultItem so mark the future as completed.
-            work_item = self.pending_work_items.pop(result_item.work_id, None)
-            # work_item can be None if another process terminated (see above)
-            if work_item is not None:
-                if result_item.exception:
-                    work_item.future.set_exception(result_item.exception)
-                else:
-                    work_item.future.set_result(result_item.result)
+        # Received a _ResultItem so mark the future as completed.
+        work_item = self.pending_work_items.pop(result_item.work_id, None)
+        # work_item can be None if another process terminated (see above)
+        if work_item is not None:
+            if result_item.exception:
+                work_item.future.set_exception(result_item.exception)
+            else:
+                work_item.future.set_result(result_item.result)
 
     def is_shutting_down(self):
         # Check whether we should start shutting down the executor.
@@ -464,7 +470,7 @@ def is_shutting_down(self):
         return (_global_shutdown or executor is None
                 or executor._shutdown_thread)
 
-    def terminate_broken(self, cause):
+    def _terminate_broken(self, cause):
         # Terminate the executor because it is in a broken state. The cause
         # argument can be used to display more information on the error that
         # lead the executor into becoming broken.
@@ -489,7 +495,14 @@ def terminate_broken(self, cause):
 
         # Mark pending tasks as failed.
         for work_id, work_item in self.pending_work_items.items():
-            work_item.future.set_exception(bpe)
+            try:
+                work_item.future.set_exception(bpe)
+            except _base.InvalidStateError:
+                # set_exception() fails if the future is cancelled: ignore it.
+                # Trying to check if the future is cancelled before calling
+                # set_exception() would leave a race condition if the future is
+                # cancelled between the check and set_exception().
+                pass
             # Delete references to object. See issue16284
             del work_item
         self.pending_work_items.clear()
@@ -499,8 +512,14 @@ def terminate_broken(self, cause):
         for p in self.processes.values():
             p.terminate()
 
+        self.call_queue._terminate_broken()
+
         # clean up resources
-        self.join_executor_internals()
+        self._join_executor_internals(broken=True)
+
+    def terminate_broken(self, cause):
+        with self.shutdown_lock:
+            self._terminate_broken(cause)
 
     def flag_executor_shutting_down(self):
         # Flag the executor as shutting down and cancel remaining tasks if
@@ -543,15 +562,24 @@ def shutdown_workers(self):
                     break
 
     def join_executor_internals(self):
-        self.shutdown_workers()
+        with self.shutdown_lock:
+            self._join_executor_internals()
+
+    def _join_executor_internals(self, broken=False):
+        # If broken, call_queue was closed and so can no longer be used.
+        if not broken:
+            self.shutdown_workers()
+
         # Release the queue's resources as soon as possible.
         self.call_queue.close()
         self.call_queue.join_thread()
-        with self.shutdown_lock:
-            self.thread_wakeup.close()
+        self.thread_wakeup.close()
+
         # If .join() is not called on the created processes then
         # some ctx.Queue methods may deadlock on Mac OS X.
         for p in self.processes.values():
+            if broken:
+                p.terminate()
             p.join()
 
     def get_n_children_alive(self):
@@ -638,7 +666,7 @@ def __init__(self, max_workers=None, mp_context=None,
         _check_system_limits()
 
         if max_workers is None:
-            self._max_workers = os.cpu_count() or 1
+            self._max_workers = os.process_cpu_count() or 1
             if sys.platform == 'win32':
                 self._max_workers = min(_MAX_WINDOWS_WORKERS,
                                         self._max_workers)
@@ -702,7 +730,10 @@ def __init__(self, max_workers=None, mp_context=None,
         # as it could result in a deadlock if a worker process dies with the
         # _result_queue write lock still acquired.
         #
-        # _shutdown_lock must be locked to access _ThreadWakeup.
+        # _shutdown_lock must be locked to access _ThreadWakeup.close() and
+        # .wakeup(). Care must also be taken to not call clear or close from
+        # more than one thread since _ThreadWakeup.clear() is not protected by
+        # the _shutdown_lock
         self._executor_manager_thread_wakeup = _ThreadWakeup()
 
         # Create communication channels for the executor
diff --git a/Lib/concurrent/futures/thread.py b/Lib/concurrent/futures/thread.py
index 51c942f51abd37..a024033f35fb54 100644
--- a/Lib/concurrent/futures/thread.py
+++ b/Lib/concurrent/futures/thread.py
@@ -43,7 +43,7 @@ def _python_exit():
                         after_in_parent=_global_shutdown_lock.release)
 
 
-class _WorkItem(object):
+class _WorkItem:
     def __init__(self, future, fn, args, kwargs):
         self.future = future
         self.fn = fn
@@ -78,17 +78,20 @@ def _worker(executor_reference, work_queue, initializer, initargs):
             return
     try:
         while True:
-            work_item = work_queue.get(block=True)
-            if work_item is not None:
-                work_item.run()
-                # Delete references to object. See issue16284
-                del work_item
-
-                # attempt to increment idle count
+            try:
+                work_item = work_queue.get_nowait()
+            except queue.Empty:
+                # attempt to increment idle count if queue is empty
                 executor = executor_reference()
                 if executor is not None:
                     executor._idle_semaphore.release()
                 del executor
+                work_item = work_queue.get(block=True)
+
+            if work_item is not None:
+                work_item.run()
+                # Delete references to object. See GH-60488
+                del work_item
                 continue
 
             executor = executor_reference()
@@ -136,10 +139,10 @@ def __init__(self, max_workers=None, thread_name_prefix='',
             # * CPU bound task which releases GIL
             # * I/O bound task (which releases GIL, of course)
             #
-            # We use cpu_count + 4 for both types of tasks.
+            # We use process_cpu_count + 4 for both types of tasks.
             # But we limit it to 32 to avoid consuming surprisingly large resource
             # on many core machine.
-            max_workers = min(32, (os.cpu_count() or 1) + 4)
+            max_workers = min(32, (os.process_cpu_count() or 1) + 4)
         if max_workers <= 0:
             raise ValueError("max_workers must be greater than 0")
 
diff --git a/Lib/configparser.py b/Lib/configparser.py
index dee5a0db7e7ddc..71362d23ec3757 100644
--- a/Lib/configparser.py
+++ b/Lib/configparser.py
@@ -59,7 +59,7 @@
         instance. It will be used as the handler for option value
         pre-processing when using getters. RawConfigParser objects don't do
         any sort of interpolation, whereas ConfigParser uses an instance of
-        BasicInterpolation. The library also provides a ``zc.buildbot``
+        BasicInterpolation. The library also provides a ``zc.buildout``
         inspired ExtendedInterpolation implementation.
 
         When `converters` is given, it should be a dictionary where each key
@@ -147,7 +147,6 @@
 import os
 import re
 import sys
-import warnings
 
 __all__ = ("NoSectionError", "DuplicateOptionError", "DuplicateSectionError",
            "NoOptionError", "InterpolationError", "InterpolationDepthError",
@@ -155,7 +154,7 @@
            "ParsingError", "MissingSectionHeaderError",
            "ConfigParser", "RawConfigParser",
            "Interpolation", "BasicInterpolation",  "ExtendedInterpolation",
-           "LegacyInterpolation", "SectionProxy", "ConverterMapping",
+           "SectionProxy", "ConverterMapping",
            "DEFAULTSECT", "MAX_INTERPOLATION_DEPTH")
 
 _default_dict = dict
@@ -491,53 +490,6 @@ def _interpolate_some(self, parser, option, accum, rest, section, map,
                     "found: %r" % (rest,))
 
 
-class LegacyInterpolation(Interpolation):
-    """Deprecated interpolation used in old versions of ConfigParser.
-    Use BasicInterpolation or ExtendedInterpolation instead."""
-
-    _KEYCRE = re.compile(r"%\(([^)]*)\)s|.")
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        warnings.warn(
-            "LegacyInterpolation has been deprecated since Python 3.2 "
-            "and will be removed from the configparser module in Python 3.13. "
-            "Use BasicInterpolation or ExtendedInterpolation instead.",
-            DeprecationWarning, stacklevel=2
-        )
-
-    def before_get(self, parser, section, option, value, vars):
-        rawval = value
-        depth = MAX_INTERPOLATION_DEPTH
-        while depth:                    # Loop through this until it's done
-            depth -= 1
-            if value and "%(" in value:
-                replace = functools.partial(self._interpolation_replace,
-                                            parser=parser)
-                value = self._KEYCRE.sub(replace, value)
-                try:
-                    value = value % vars
-                except KeyError as e:
-                    raise InterpolationMissingOptionError(
-                        option, section, rawval, e.args[0]) from None
-            else:
-                break
-        if value and "%(" in value:
-            raise InterpolationDepthError(option, section, rawval)
-        return value
-
-    def before_set(self, parser, section, option, value):
-        return value
-
-    @staticmethod
-    def _interpolation_replace(match, parser):
-        s = match.group(1)
-        if s is None:
-            return match.group()
-        else:
-            return "%%(%s)s" % parser.optionxform(s)
-
-
 class RawConfigParser(MutableMapping):
     """ConfigParser that does not do interpolation."""
 
diff --git a/Lib/contextlib.py b/Lib/contextlib.py
index b5acbcb9e6d77c..5b646fabca0225 100644
--- a/Lib/contextlib.py
+++ b/Lib/contextlib.py
@@ -20,6 +20,8 @@ class AbstractContextManager(abc.ABC):
 
     __class_getitem__ = classmethod(GenericAlias)
 
+    __slots__ = ()
+
     def __enter__(self):
         """Return `self` upon entering the runtime context."""
         return self
@@ -42,6 +44,8 @@ class AbstractAsyncContextManager(abc.ABC):
 
     __class_getitem__ = classmethod(GenericAlias)
 
+    __slots__ = ()
+
     async def __aenter__(self):
         """Return `self` upon entering the runtime context."""
         return self
@@ -145,7 +149,10 @@ def __exit__(self, typ, value, traceback):
             except StopIteration:
                 return False
             else:
-                raise RuntimeError("generator didn't stop")
+                try:
+                    raise RuntimeError("generator didn't stop")
+                finally:
+                    self.gen.close()
         else:
             if value is None:
                 # Need to force instantiation so we can reliably
@@ -187,7 +194,10 @@ def __exit__(self, typ, value, traceback):
                     raise
                 exc.__traceback__ = traceback
                 return False
-            raise RuntimeError("generator didn't stop after throw()")
+            try:
+                raise RuntimeError("generator didn't stop after throw()")
+            finally:
+                self.gen.close()
 
 class _AsyncGeneratorContextManager(
     _GeneratorContextManagerBase,
@@ -212,7 +222,10 @@ async def __aexit__(self, typ, value, traceback):
             except StopAsyncIteration:
                 return False
             else:
-                raise RuntimeError("generator didn't stop")
+                try:
+                    raise RuntimeError("generator didn't stop")
+                finally:
+                    await self.gen.aclose()
         else:
             if value is None:
                 # Need to force instantiation so we can reliably
@@ -254,7 +267,10 @@ async def __aexit__(self, typ, value, traceback):
                     raise
                 exc.__traceback__ = traceback
                 return False
-            raise RuntimeError("generator didn't stop after athrow()")
+            try:
+                raise RuntimeError("generator didn't stop after athrow()")
+            finally:
+                await self.gen.aclose()
 
 
 def contextmanager(func):
@@ -445,7 +461,7 @@ def __exit__(self, exctype, excinst, exctb):
             return
         if issubclass(exctype, self._exceptions):
             return True
-        if issubclass(exctype, ExceptionGroup):
+        if issubclass(exctype, BaseExceptionGroup):
             match, rest = excinst.split(self._exceptions)
             if rest is None:
                 return True
@@ -553,11 +569,12 @@ def __enter__(self):
         return self
 
     def __exit__(self, *exc_details):
-        received_exc = exc_details[0] is not None
+        exc = exc_details[1]
+        received_exc = exc is not None
 
         # We manipulate the exception state so it behaves as though
         # we were actually nesting multiple with statements
-        frame_exc = sys.exc_info()[1]
+        frame_exc = sys.exception()
         def _fix_exception_context(new_exc, old_exc):
             # Context may not be correct, so find the end of the chain
             while 1:
@@ -580,24 +597,28 @@ def _fix_exception_context(new_exc, old_exc):
             is_sync, cb = self._exit_callbacks.pop()
             assert is_sync
             try:
+                if exc is None:
+                    exc_details = None, None, None
+                else:
+                    exc_details = type(exc), exc, exc.__traceback__
                 if cb(*exc_details):
                     suppressed_exc = True
                     pending_raise = False
-                    exc_details = (None, None, None)
-            except:
-                new_exc_details = sys.exc_info()
+                    exc = None
+            except BaseException as new_exc:
                 # simulate the stack of exceptions by setting the context
-                _fix_exception_context(new_exc_details[1], exc_details[1])
+                _fix_exception_context(new_exc, exc)
                 pending_raise = True
-                exc_details = new_exc_details
+                exc = new_exc
+
         if pending_raise:
             try:
-                # bare "raise exc_details[1]" replaces our carefully
+                # bare "raise exc" replaces our carefully
                 # set-up context
-                fixed_ctx = exc_details[1].__context__
-                raise exc_details[1]
+                fixed_ctx = exc.__context__
+                raise exc
             except BaseException:
-                exc_details[1].__context__ = fixed_ctx
+                exc.__context__ = fixed_ctx
                 raise
         return received_exc and suppressed_exc
 
@@ -693,11 +714,12 @@ async def __aenter__(self):
         return self
 
     async def __aexit__(self, *exc_details):
-        received_exc = exc_details[0] is not None
+        exc = exc_details[1]
+        received_exc = exc is not None
 
         # We manipulate the exception state so it behaves as though
         # we were actually nesting multiple with statements
-        frame_exc = sys.exc_info()[1]
+        frame_exc = sys.exception()
         def _fix_exception_context(new_exc, old_exc):
             # Context may not be correct, so find the end of the chain
             while 1:
@@ -719,6 +741,10 @@ def _fix_exception_context(new_exc, old_exc):
         while self._exit_callbacks:
             is_sync, cb = self._exit_callbacks.pop()
             try:
+                if exc is None:
+                    exc_details = None, None, None
+                else:
+                    exc_details = type(exc), exc, exc.__traceback__
                 if is_sync:
                     cb_suppress = cb(*exc_details)
                 else:
@@ -727,21 +753,21 @@ def _fix_exception_context(new_exc, old_exc):
                 if cb_suppress:
                     suppressed_exc = True
                     pending_raise = False
-                    exc_details = (None, None, None)
-            except:
-                new_exc_details = sys.exc_info()
+                    exc = None
+            except BaseException as new_exc:
                 # simulate the stack of exceptions by setting the context
-                _fix_exception_context(new_exc_details[1], exc_details[1])
+                _fix_exception_context(new_exc, exc)
                 pending_raise = True
-                exc_details = new_exc_details
+                exc = new_exc
+
         if pending_raise:
             try:
-                # bare "raise exc_details[1]" replaces our carefully
+                # bare "raise exc" replaces our carefully
                 # set-up context
-                fixed_ctx = exc_details[1].__context__
-                raise exc_details[1]
+                fixed_ctx = exc.__context__
+                raise exc
             except BaseException:
-                exc_details[1].__context__ = fixed_ctx
+                exc.__context__ = fixed_ctx
                 raise
         return received_exc and suppressed_exc
 
diff --git a/Lib/copy.py b/Lib/copy.py
index da2908ef623d8c..a69bc4e78c20b3 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -121,13 +121,13 @@ def deepcopy(x, memo=None, _nil=[]):
     See the module's __doc__ string for more info.
     """
 
+    d = id(x)
     if memo is None:
         memo = {}
-
-    d = id(x)
-    y = memo.get(d, _nil)
-    if y is not _nil:
-        return y
+    else:
+        y = memo.get(d, _nil)
+        if y is not _nil:
+            return y
 
     cls = type(x)
 
@@ -290,3 +290,16 @@ def _reconstruct(x, memo, func, args,
     return y
 
 del types, weakref
+
+
+def replace(obj, /, **changes):
+    """Return a new object replacing specified fields with new values.
+
+    This is especially useful for immutable objects, like named tuples or
+    frozen dataclasses.
+    """
+    cls = obj.__class__
+    func = getattr(cls, '__replace__', None)
+    if func is None:
+        raise TypeError(f"replace() does not support {cls.__name__} objects")
+    return func(obj, **changes)
diff --git a/Lib/crypt.py b/Lib/crypt.py
deleted file mode 100644
index de4a14a3884762..00000000000000
--- a/Lib/crypt.py
+++ /dev/null
@@ -1,124 +0,0 @@
-"""Wrapper to the POSIX crypt library call and associated functionality."""
-
-import sys as _sys
-
-try:
-    import _crypt
-except ModuleNotFoundError:
-    if _sys.platform == 'win32':
-        raise ImportError("The crypt module is not supported on Windows")
-    else:
-        raise ImportError("The required _crypt module was not built as part of CPython")
-
-import errno
-import string as _string
-import warnings
-from random import SystemRandom as _SystemRandom
-from collections import namedtuple as _namedtuple
-
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-
-_saltchars = _string.ascii_letters + _string.digits + './'
-_sr = _SystemRandom()
-
-
-class _Method(_namedtuple('_Method', 'name ident salt_chars total_size')):
-
-    """Class representing a salt method per the Modular Crypt Format or the
-    legacy 2-character crypt method."""
-
-    def __repr__(self):
-        return '<crypt.METHOD_{}>'.format(self.name)
-
-
-def mksalt(method=None, *, rounds=None):
-    """Generate a salt for the specified method.
-
-    If not specified, the strongest available method will be used.
-
-    """
-    if method is None:
-        method = methods[0]
-    if rounds is not None and not isinstance(rounds, int):
-        raise TypeError(f'{rounds.__class__.__name__} object cannot be '
-                        f'interpreted as an integer')
-    if not method.ident:  # traditional
-        s = ''
-    else:  # modular
-        s = f'${method.ident}$'
-
-    if method.ident and method.ident[0] == '2':  # Blowfish variants
-        if rounds is None:
-            log_rounds = 12
-        else:
-            log_rounds = int.bit_length(rounds-1)
-            if rounds != 1 << log_rounds:
-                raise ValueError('rounds must be a power of 2')
-            if not 4 <= log_rounds <= 31:
-                raise ValueError('rounds out of the range 2**4 to 2**31')
-        s += f'{log_rounds:02d}$'
-    elif method.ident in ('5', '6'):  # SHA-2
-        if rounds is not None:
-            if not 1000 <= rounds <= 999_999_999:
-                raise ValueError('rounds out of the range 1000 to 999_999_999')
-            s += f'rounds={rounds}$'
-    elif rounds is not None:
-        raise ValueError(f"{method} doesn't support the rounds argument")
-
-    s += ''.join(_sr.choice(_saltchars) for char in range(method.salt_chars))
-    return s
-
-
-def crypt(word, salt=None):
-    """Return a string representing the one-way hash of a password, with a salt
-    prepended.
-
-    If ``salt`` is not specified or is ``None``, the strongest
-    available method will be selected and a salt generated.  Otherwise,
-    ``salt`` may be one of the ``crypt.METHOD_*`` values, or a string as
-    returned by ``crypt.mksalt()``.
-
-    """
-    if salt is None or isinstance(salt, _Method):
-        salt = mksalt(salt)
-    return _crypt.crypt(word, salt)
-
-
-#  available salting/crypto methods
-methods = []
-
-def _add_method(name, *args, rounds=None):
-    method = _Method(name, *args)
-    globals()['METHOD_' + name] = method
-    salt = mksalt(method, rounds=rounds)
-    result = None
-    try:
-        result = crypt('', salt)
-    except OSError as e:
-        # Not all libc libraries support all encryption methods.
-        if e.errno in {errno.EINVAL, errno.EPERM, errno.ENOSYS}:
-            return False
-        raise
-    if result and len(result) == method.total_size:
-        methods.append(method)
-        return True
-    return False
-
-_add_method('SHA512', '6', 16, 106)
-_add_method('SHA256', '5', 16, 63)
-
-# Choose the strongest supported version of Blowfish hashing.
-# Early versions have flaws.  Version 'a' fixes flaws of
-# the initial implementation, 'b' fixes flaws of 'a'.
-# 'y' is the same as 'b', for compatibility
-# with openwall crypt_blowfish.
-for _v in 'b', 'y', 'a', '':
-    if _add_method('BLOWFISH', '2' + _v, 22, 59 + len(_v), rounds=1<<4):
-        break
-
-_add_method('MD5', '1', 8, 34)
-_add_method('CRYPT', None, 2, 13)
-
-del _v, _add_method
diff --git a/Lib/ctypes/__init__.py b/Lib/ctypes/__init__.py
index 95353bab26cc71..141142a57dcb3e 100644
--- a/Lib/ctypes/__init__.py
+++ b/Lib/ctypes/__init__.py
@@ -302,8 +302,9 @@ def create_unicode_buffer(init, size=None):
     raise TypeError(init)
 
 
-# XXX Deprecated
 def SetPointerType(pointer, cls):
+    import warnings
+    warnings._deprecated("ctypes.SetPointerType", remove=(3, 15))
     if _pointer_type_cache.get(cls, None) is not None:
         raise RuntimeError("This type already exists in the cache")
     if id(pointer) not in _pointer_type_cache:
@@ -312,8 +313,9 @@ def SetPointerType(pointer, cls):
     _pointer_type_cache[cls] = pointer
     del _pointer_type_cache[id(pointer)]
 
-# XXX Deprecated
 def ARRAY(typ, len):
+    import warnings
+    warnings._deprecated("ctypes.ARRAY", remove=(3, 15))
     return typ * len
 
 ################################################################
diff --git a/Lib/ctypes/_endian.py b/Lib/ctypes/_endian.py
index b5446c049bc9dc..3febb3118b8230 100644
--- a/Lib/ctypes/_endian.py
+++ b/Lib/ctypes/_endian.py
@@ -1,5 +1,5 @@
 import sys
-from ctypes import *
+from ctypes import Array, Structure, Union
 
 _array_type = type(Array)
 
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py
index 3eacba840db426..2fba32b5ffbc1e 100644
--- a/Lib/dataclasses.py
+++ b/Lib/dataclasses.py
@@ -575,15 +575,15 @@ def _init_fn(fields, std_fields, kw_only_fields, frozen, has_post_init,
     # message, and future-proofs us in case we build up the function
     # using ast.
 
-    seen_default = False
+    seen_default = None
     for f in std_fields:
         # Only consider the non-kw-only fields in the __init__ call.
         if f.init:
             if not (f.default is MISSING and f.default_factory is MISSING):
-                seen_default = True
+                seen_default = f
             elif seen_default:
                 raise TypeError(f'non-default argument {f.name!r} '
-                                'follows default argument')
+                                f'follows default argument {seen_default.name!r}')
 
     locals = {f'__dataclass_type_{f.name}__': f.type for f in fields}
     locals.update({
@@ -627,7 +627,7 @@ def _init_fn(fields, std_fields, kw_only_fields, frozen, has_post_init,
 def _repr_fn(fields, globals):
     fn = _create_fn('__repr__',
                     ('self',),
-                    ['return self.__class__.__qualname__ + f"(' +
+                    ['return f"{self.__class__.__qualname__}(' +
                      ', '.join([f"{f.name}={{self.{f.name}!r}}"
                                 for f in fields]) +
                      ')"'],
@@ -944,8 +944,11 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen,
     # Find our base classes in reverse MRO order, and exclude
     # ourselves.  In reversed order so that more derived classes
     # override earlier field definitions in base classes.  As long as
-    # we're iterating over them, see if any are frozen.
+    # we're iterating over them, see if all or any of them are frozen.
     any_frozen_base = False
+    # By default `all_frozen_bases` is `None` to represent a case,
+    # where some dataclasses does not have any bases with `_FIELDS`
+    all_frozen_bases = None
     has_dataclass_bases = False
     for b in cls.__mro__[-1:0:-1]:
         # Only process classes that have been processed by our
@@ -955,8 +958,11 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen,
             has_dataclass_bases = True
             for f in base_fields.values():
                 fields[f.name] = f
-            if getattr(b, _PARAMS).frozen:
-                any_frozen_base = True
+            if all_frozen_bases is None:
+                all_frozen_bases = True
+            current_frozen = getattr(b, _PARAMS).frozen
+            all_frozen_bases = all_frozen_bases and current_frozen
+            any_frozen_base = any_frozen_base or current_frozen
 
     # Annotations defined specifically in this class (not in base classes).
     #
@@ -1025,7 +1031,7 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen,
                             'frozen one')
 
         # Raise an exception if we're frozen, but none of our bases are.
-        if not any_frozen_base and frozen:
+        if all_frozen_bases is False and frozen:
             raise TypeError('cannot inherit frozen dataclass from a '
                             'non-frozen one')
 
@@ -1036,7 +1042,7 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen,
     # Was this class defined with an explicit __hash__?  Note that if
     # __eq__ is defined in this class, then python will automatically
     # set __hash__ to None.  This is a heuristic, as it's possible
-    # that such a __hash__ == None was not auto-generated, but it
+    # that such a __hash__ == None was not auto-generated, but it's
     # close enough.
     class_hash = cls.__dict__.get('__hash__', MISSING)
     has_explicit_hash = not (class_hash is MISSING or
@@ -1073,6 +1079,7 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen,
                                     globals,
                                     slots,
                           ))
+    _set_new_attribute(cls, '__replace__', _replace)
 
     # Get the fields as a list, and include only real fields.  This is
     # used in all of the following methods.
@@ -1085,13 +1092,17 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen,
     if eq:
         # Create __eq__ method.  There's no need for a __ne__ method,
         # since python will call __eq__ and negate it.
-        flds = [f for f in field_list if f.compare]
-        self_tuple = _tuple_str('self', flds)
-        other_tuple = _tuple_str('other', flds)
-        _set_new_attribute(cls, '__eq__',
-                           _cmp_fn('__eq__', '==',
-                                   self_tuple, other_tuple,
-                                   globals=globals))
+        cmp_fields = (field for field in field_list if field.compare)
+        terms = [f'self.{field.name}==other.{field.name}' for field in cmp_fields]
+        field_comparisons = ' and '.join(terms) or 'True'
+        body =  [f'if other.__class__ is self.__class__:',
+                 f' return {field_comparisons}',
+                 f'return NotImplemented']
+        func = _create_fn('__eq__',
+                          ('self', 'other'),
+                          body,
+                          globals=globals)
+        _set_new_attribute(cls, '__eq__', func)
 
     if order:
         # Create and set the ordering methods.
@@ -1542,13 +1553,15 @@ class C:
       c1 = replace(c, x=3)
       assert c1.x == 3 and c1.y == 2
     """
+    if not _is_dataclass_instance(obj):
+        raise TypeError("replace() should be called on dataclass instances")
+    return _replace(obj, **changes)
 
+
+def _replace(obj, /, **changes):
     # We're going to mutate 'changes', but that's okay because it's a
     # new dict, even if called with 'replace(obj, **my_changes)'.
 
-    if not _is_dataclass_instance(obj):
-        raise TypeError("replace() should be called on dataclass instances")
-
     # It's an error to have init=False fields in 'changes'.
     # If a field is not in 'changes', read its value from the provided obj.
 
@@ -1560,15 +1573,15 @@ class C:
         if not f.init:
             # Error if this field is specified in changes.
             if f.name in changes:
-                raise ValueError(f'field {f.name} is declared with '
-                                 'init=False, it cannot be specified with '
-                                 'replace()')
+                raise TypeError(f'field {f.name} is declared with '
+                                f'init=False, it cannot be specified with '
+                                f'replace()')
             continue
 
         if f.name not in changes:
             if f._field_type is _FIELD_INITVAR and f.default is MISSING:
-                raise ValueError(f"InitVar {f.name!r} "
-                                 'must be specified with replace()')
+                raise TypeError(f"InitVar {f.name!r} "
+                                f'must be specified with replace()')
             changes[f.name] = getattr(obj, f.name)
 
     # Create the new object, which calls __init__() and
diff --git a/Lib/datetime.py b/Lib/datetime.py
index bad8beb4f6b026..a33d2d724cb33d 100644
--- a/Lib/datetime.py
+++ b/Lib/datetime.py
@@ -6,4 +6,4 @@
     from _pydatetime import __doc__
 
 __all__ = ("date", "datetime", "time", "timedelta", "timezone", "tzinfo",
-           "MINYEAR", "MAXYEAR")
+           "MINYEAR", "MAXYEAR", "UTC")
diff --git a/Lib/dis.py b/Lib/dis.py
index 3a8e6ac3bf5ace..efa935c5a6a0b6 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -14,7 +14,7 @@
     _intrinsic_1_descs,
     _intrinsic_2_descs,
     _specializations,
-    _specialized_instructions,
+    _specialized_opmap,
 )
 
 __all__ = ["code_info", "dis", "disassemble", "distb", "disco",
@@ -25,16 +25,12 @@
 _have_code = (types.MethodType, types.FunctionType, types.CodeType,
               classmethod, staticmethod, type)
 
-FORMAT_VALUE = opmap['FORMAT_VALUE']
-FORMAT_VALUE_CONVERTERS = (
-    (None, ''),
-    (str, 'str'),
-    (repr, 'repr'),
-    (ascii, 'ascii'),
-)
-MAKE_FUNCTION = opmap['MAKE_FUNCTION']
-MAKE_FUNCTION_FLAGS = ('defaults', 'kwdefaults', 'annotations', 'closure')
+CONVERT_VALUE = opmap['CONVERT_VALUE']
+
+SET_FUNCTION_ATTRIBUTE = opmap['SET_FUNCTION_ATTRIBUTE']
+FUNCTION_ATTR_FLAGS = ('defaults', 'kwdefaults', 'annotations', 'closure')
 
+ENTER_EXECUTOR = opmap['ENTER_EXECUTOR']
 LOAD_CONST = opmap['LOAD_CONST']
 RETURN_CONST = opmap['RETURN_CONST']
 LOAD_GLOBAL = opmap['LOAD_GLOBAL']
@@ -46,16 +42,19 @@
 LOAD_SUPER_ATTR = opmap['LOAD_SUPER_ATTR']
 CALL_INTRINSIC_1 = opmap['CALL_INTRINSIC_1']
 CALL_INTRINSIC_2 = opmap['CALL_INTRINSIC_2']
+LOAD_FAST_LOAD_FAST = opmap['LOAD_FAST_LOAD_FAST']
+STORE_FAST_LOAD_FAST = opmap['STORE_FAST_LOAD_FAST']
+STORE_FAST_STORE_FAST = opmap['STORE_FAST_STORE_FAST']
 
 CACHE = opmap["CACHE"]
 
 _all_opname = list(opname)
 _all_opmap = dict(opmap)
-_empty_slot = [slot for slot, name in enumerate(_all_opname) if name.startswith("<")]
-for spec_op, specialized in zip(_empty_slot, _specialized_instructions):
+for name, op in _specialized_opmap.items():
     # fill opname and opmap
-    _all_opname[spec_op] = specialized
-    _all_opmap[specialized] = spec_op
+    assert op < len(_all_opname)
+    _all_opname[op] = name
+    _all_opmap[name] = op
 
 deoptmap = {
     specialized: base for base, family in _specializations.items() for specialized in family
@@ -74,7 +73,8 @@ def _try_compile(source, name):
         pass
     return compile(source, name, 'exec')
 
-def dis(x=None, *, file=None, depth=None, show_caches=False, adaptive=False):
+def dis(x=None, *, file=None, depth=None, show_caches=False, adaptive=False,
+        show_offsets=False):
     """Disassemble classes, methods, functions, and other compiled objects.
 
     With no argument, disassemble the last traceback.
@@ -84,7 +84,8 @@ def dis(x=None, *, file=None, depth=None, show_caches=False, adaptive=False):
     in a special attribute.
     """
     if x is None:
-        distb(file=file, show_caches=show_caches, adaptive=adaptive)
+        distb(file=file, show_caches=show_caches, adaptive=adaptive,
+              show_offsets=show_offsets)
         return
     # Extract functions from methods.
     if hasattr(x, '__func__'):
@@ -105,21 +106,21 @@ def dis(x=None, *, file=None, depth=None, show_caches=False, adaptive=False):
             if isinstance(x1, _have_code):
                 print("Disassembly of %s:" % name, file=file)
                 try:
-                    dis(x1, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive)
+                    dis(x1, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive, show_offsets=show_offsets)
                 except TypeError as msg:
                     print("Sorry:", msg, file=file)
                 print(file=file)
     elif hasattr(x, 'co_code'): # Code object
-        _disassemble_recursive(x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive)
+        _disassemble_recursive(x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive, show_offsets=show_offsets)
     elif isinstance(x, (bytes, bytearray)): # Raw bytecode
-        _disassemble_bytes(x, file=file, show_caches=show_caches)
+        _disassemble_bytes(x, file=file, show_caches=show_caches, show_offsets=show_offsets)
     elif isinstance(x, str):    # Source code
-        _disassemble_str(x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive)
+        _disassemble_str(x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive, show_offsets=show_offsets)
     else:
         raise TypeError("don't know how to disassemble %s objects" %
                         type(x).__name__)
 
-def distb(tb=None, *, file=None, show_caches=False, adaptive=False):
+def distb(tb=None, *, file=None, show_caches=False, adaptive=False, show_offsets=False):
     """Disassemble a traceback (default: last traceback)."""
     if tb is None:
         try:
@@ -130,7 +131,7 @@ def distb(tb=None, *, file=None, show_caches=False, adaptive=False):
         except AttributeError:
             raise RuntimeError("no last traceback to disassemble") from None
         while tb.tb_next: tb = tb.tb_next
-    disassemble(tb.tb_frame.f_code, tb.tb_lasti, file=file, show_caches=show_caches, adaptive=adaptive)
+    disassemble(tb.tb_frame.f_code, tb.tb_lasti, file=file, show_caches=show_caches, adaptive=adaptive, show_offsets=show_offsets)
 
 # The inspect module interrogates this dictionary to build its
 # list of CO_* constants. It is also used by pretty_flags to
@@ -262,11 +263,13 @@ def show_code(co, *, file=None):
         'argval',
         'argrepr',
         'offset',
+        'start_offset',
         'starts_line',
-        'is_jump_target',
+        'line_number',
+        'label',
         'positions'
     ],
-    defaults=[None]
+    defaults=[None, None]
 )
 
 _Instruction.opname.__doc__ = "Human readable name for operation"
@@ -275,18 +278,47 @@ def show_code(co, *, file=None):
 _Instruction.argval.__doc__ = "Resolved arg value (if known), otherwise same as arg"
 _Instruction.argrepr.__doc__ = "Human readable description of operation argument"
 _Instruction.offset.__doc__ = "Start index of operation within bytecode sequence"
-_Instruction.starts_line.__doc__ = "Line started by this opcode (if any), otherwise None"
-_Instruction.is_jump_target.__doc__ = "True if other code jumps to here, otherwise False"
+_Instruction.start_offset.__doc__ = (
+    "Start index of operation within bytecode sequence, including extended args if present; "
+    "otherwise equal to Instruction.offset"
+)
+_Instruction.starts_line.__doc__ = "True if this opcode starts a source line, otherwise False"
+_Instruction.line_number.__doc__ = "source line number associated with this opcode (if any), otherwise None"
+_Instruction.label.__doc__ = "A label (int > 0) if this instruction is a jump target, otherwise None"
 _Instruction.positions.__doc__ = "dis.Positions object holding the span of source code covered by this instruction"
 
-_ExceptionTableEntry = collections.namedtuple("_ExceptionTableEntry",
+_ExceptionTableEntryBase = collections.namedtuple("_ExceptionTableEntryBase",
     "start end target depth lasti")
 
+class _ExceptionTableEntry(_ExceptionTableEntryBase):
+    pass
+
 _OPNAME_WIDTH = 20
 _OPARG_WIDTH = 5
 
+def _get_cache_size(opname):
+    return _inline_cache_entries.get(opname, 0)
+
+def _get_jump_target(op, arg, offset):
+    """Gets the bytecode offset of the jump target if this is a jump instruction.
+
+    Otherwise return None.
+    """
+    deop = _deoptop(op)
+    caches = _get_cache_size(_all_opname[deop])
+    if deop in hasjrel:
+        if _is_backward_jump(deop):
+            arg = -arg
+        target = offset + 2 + arg*2
+        target += 2 * caches
+    elif deop in hasjabs:
+        target = arg*2
+    else:
+        target = None
+    return target
+
 class Instruction(_Instruction):
-    """Details for a bytecode operation
+    """Details for a bytecode operation.
 
        Defined fields:
          opname - human readable name for operation
@@ -295,48 +327,221 @@ class Instruction(_Instruction):
          argval - resolved arg value (if known), otherwise same as arg
          argrepr - human readable description of operation argument
          offset - start index of operation within bytecode sequence
-         starts_line - line started by this opcode (if any), otherwise None
-         is_jump_target - True if other code jumps to here, otherwise False
+         start_offset - start index of operation within bytecode sequence including extended args if present;
+                        otherwise equal to Instruction.offset
+         starts_line - True if this opcode starts a source line, otherwise False
+         line_number - source line number associated with this opcode (if any), otherwise None
+         label - A label if this instruction is a jump target, otherwise None
          positions - Optional dis.Positions object holding the span of source code
                      covered by this instruction
     """
 
-    def _disassemble(self, lineno_width=3, mark_as_current=False, offset_width=4):
-        """Format instruction details for inclusion in disassembly output
+    @property
+    def oparg(self):
+        """Alias for Instruction.arg."""
+        return self.arg
+
+    @property
+    def baseopcode(self):
+        """Numeric code for the base operation if operation is specialized.
+
+        Otherwise equal to Instruction.opcode.
+        """
+        return _deoptop(self.opcode)
+
+    @property
+    def baseopname(self):
+        """Human readable name for the base operation if operation is specialized.
+
+        Otherwise equal to Instruction.opname.
+        """
+        return opname[self.baseopcode]
+
+    @property
+    def cache_offset(self):
+        """Start index of the cache entries following the operation."""
+        return self.offset + 2
+
+    @property
+    def end_offset(self):
+        """End index of the cache entries following the operation."""
+        return self.cache_offset + _get_cache_size(_all_opname[self.opcode])*2
+
+    @property
+    def jump_target(self):
+        """Bytecode index of the jump target if this is a jump operation.
 
+        Otherwise return None.
+        """
+        return _get_jump_target(self.opcode, self.arg, self.offset)
+
+    @property
+    def is_jump_target(self):
+        """True if other code jumps to here, otherwise False"""
+        return self.label is not None
+
+    def __str__(self):
+        output = io.StringIO()
+        formatter = Formatter(file=output)
+        formatter.print_instruction(self, False)
+        return output.getvalue()
+
+
+class Formatter:
+
+    def __init__(self, file=None, lineno_width=0, offset_width=0, label_width=0,
+                       line_offset=0):
+        """Create a Formatter
+
+        *file* where to write the output
         *lineno_width* sets the width of the line number field (0 omits it)
-        *mark_as_current* inserts a '-->' marker arrow as part of the line
         *offset_width* sets the width of the instruction offset field
+        *label_width* sets the width of the label field
+
+        *line_offset* the line number (within the code unit)
         """
+        self.file = file
+        self.lineno_width = lineno_width
+        self.offset_width = offset_width
+        self.label_width = label_width
+
+
+    def print_instruction(self, instr, mark_as_current=False):
+        """Format instruction details for inclusion in disassembly output."""
+        lineno_width = self.lineno_width
+        offset_width = self.offset_width
+        label_width = self.label_width
+
+        new_source_line = (lineno_width > 0 and
+                           instr.starts_line and
+                           instr.offset > 0)
+        if new_source_line:
+            print(file=self.file)
+
         fields = []
         # Column: Source code line number
         if lineno_width:
-            if self.starts_line is not None:
-                lineno_fmt = "%%%dd" % lineno_width
-                fields.append(lineno_fmt % self.starts_line)
+            if instr.starts_line:
+                lineno_fmt = "%%%dd" if instr.line_number is not None else "%%%ds"
+                lineno_fmt = lineno_fmt % lineno_width
+                lineno = _NO_LINENO if instr.line_number is None else instr.line_number
+                fields.append(lineno_fmt % lineno)
             else:
                 fields.append(' ' * lineno_width)
+        # Column: Label
+        if instr.label is not None:
+            lbl = f"L{instr.label}:"
+            fields.append(f"{lbl:>{label_width}}")
+        else:
+            fields.append(' ' * label_width)
+        # Column: Instruction offset from start of code sequence
+        if offset_width > 0:
+            fields.append(f"{repr(instr.offset):>{offset_width}}  ")
         # Column: Current instruction indicator
         if mark_as_current:
             fields.append('-->')
         else:
             fields.append('   ')
-        # Column: Jump target marker
-        if self.is_jump_target:
-            fields.append('>>')
-        else:
-            fields.append('  ')
-        # Column: Instruction offset from start of code sequence
-        fields.append(repr(self.offset).rjust(offset_width))
         # Column: Opcode name
-        fields.append(self.opname.ljust(_OPNAME_WIDTH))
+        fields.append(instr.opname.ljust(_OPNAME_WIDTH))
         # Column: Opcode argument
-        if self.arg is not None:
-            fields.append(repr(self.arg).rjust(_OPARG_WIDTH))
+        if instr.arg is not None:
+            arg = repr(instr.arg)
+            # If opname is longer than _OPNAME_WIDTH, we allow it to overflow into
+            # the space reserved for oparg. This results in fewer misaligned opargs
+            # in the disassembly output.
+            opname_excess = max(0, len(instr.opname) - _OPNAME_WIDTH)
+            fields.append(repr(instr.arg).rjust(_OPARG_WIDTH - opname_excess))
             # Column: Opcode argument details
-            if self.argrepr:
-                fields.append('(' + self.argrepr + ')')
-        return ' '.join(fields).rstrip()
+            if instr.argrepr:
+                fields.append('(' + instr.argrepr + ')')
+        print(' '.join(fields).rstrip(), file=self.file)
+
+    def print_exception_table(self, exception_entries):
+        file = self.file
+        if exception_entries:
+            print("ExceptionTable:", file=file)
+            for entry in exception_entries:
+                lasti = " lasti" if entry.lasti else ""
+                start = entry.start_label
+                end = entry.end_label
+                target = entry.target_label
+                print(f"  L{start} to L{end} -> L{target} [{entry.depth}]{lasti}", file=file)
+
+
+class ArgResolver:
+    def __init__(self, co_consts, names, varname_from_oparg, labels_map):
+        self.co_consts = co_consts
+        self.names = names
+        self.varname_from_oparg = varname_from_oparg
+        self.labels_map = labels_map
+
+    def get_argval_argrepr(self, op, arg, offset):
+        get_name = None if self.names is None else self.names.__getitem__
+        argval = None
+        argrepr = ''
+        deop = _deoptop(op)
+        if arg is not None:
+            #  Set argval to the dereferenced value of the argument when
+            #  available, and argrepr to the string representation of argval.
+            #    _disassemble_bytes needs the string repr of the
+            #    raw name index for LOAD_GLOBAL, LOAD_CONST, etc.
+            argval = arg
+            if deop in hasconst:
+                argval, argrepr = _get_const_info(deop, arg, self.co_consts)
+            elif deop in hasname:
+                if deop == LOAD_GLOBAL:
+                    argval, argrepr = _get_name_info(arg//2, get_name)
+                    if (arg & 1) and argrepr:
+                        argrepr = f"{argrepr} + NULL"
+                elif deop == LOAD_ATTR:
+                    argval, argrepr = _get_name_info(arg//2, get_name)
+                    if (arg & 1) and argrepr:
+                        argrepr = f"{argrepr} + NULL|self"
+                elif deop == LOAD_SUPER_ATTR:
+                    argval, argrepr = _get_name_info(arg//4, get_name)
+                    if (arg & 1) and argrepr:
+                        argrepr = f"{argrepr} + NULL|self"
+                else:
+                    argval, argrepr = _get_name_info(arg, get_name)
+            elif deop in hasjabs:
+                argval = arg*2
+                argrepr = f"to L{self.labels_map[argval]}"
+            elif deop in hasjrel:
+                signed_arg = -arg if _is_backward_jump(deop) else arg
+                argval = offset + 2 + signed_arg*2
+                caches = _get_cache_size(_all_opname[deop])
+                argval += 2 * caches
+                if deop == ENTER_EXECUTOR:
+                    argval += 2
+                argrepr = f"to L{self.labels_map[argval]}"
+            elif deop in (LOAD_FAST_LOAD_FAST, STORE_FAST_LOAD_FAST, STORE_FAST_STORE_FAST):
+                arg1 = arg >> 4
+                arg2 = arg & 15
+                val1, argrepr1 = _get_name_info(arg1, self.varname_from_oparg)
+                val2, argrepr2 = _get_name_info(arg2, self.varname_from_oparg)
+                argrepr = argrepr1 + ", " + argrepr2
+                argval = val1, val2
+            elif deop in haslocal or deop in hasfree:
+                argval, argrepr = _get_name_info(arg, self.varname_from_oparg)
+            elif deop in hascompare:
+                argval = cmp_op[arg >> 5]
+                argrepr = argval
+                if arg & 16:
+                    argrepr = f"bool({argrepr})"
+            elif deop == CONVERT_VALUE:
+                argval = (None, str, repr, ascii)[arg]
+                argrepr = ('', 'str', 'repr', 'ascii')[arg]
+            elif deop == SET_FUNCTION_ATTRIBUTE:
+                argrepr = ', '.join(s for i, s in enumerate(FUNCTION_ATTR_FLAGS)
+                                    if arg & (1<<i))
+            elif deop == BINARY_OP:
+                _, argrepr = _nb_ops[arg]
+            elif deop == CALL_INTRINSIC_1:
+                argrepr = _intrinsic_1_descs[arg]
+            elif deop == CALL_INTRINSIC_2:
+                argrepr = _intrinsic_2_descs[arg]
+        return argval, argrepr
 
 
 def get_instructions(x, *, first_line=None, show_caches=False, adaptive=False):
@@ -356,12 +561,18 @@ def get_instructions(x, *, first_line=None, show_caches=False, adaptive=False):
         line_offset = first_line - co.co_firstlineno
     else:
         line_offset = 0
+
+    original_code = co.co_code
+    labels_map = _make_labels_map(original_code)
+    arg_resolver = ArgResolver(co.co_consts, co.co_names, co._varname_from_oparg,
+                               labels_map)
     return _get_instructions_bytes(_get_code_array(co, adaptive),
-                                   co._varname_from_oparg,
-                                   co.co_names, co.co_consts,
-                                   linestarts, line_offset,
+                                   linestarts=linestarts,
+                                   line_offset=line_offset,
                                    co_positions=co.co_positions(),
-                                   show_caches=show_caches)
+                                   show_caches=show_caches,
+                                   original_code=original_code,
+                                   arg_resolver=arg_resolver)
 
 def _get_const_value(op, arg, co_consts):
     """Helper to get the value of the const in a hasconst op.
@@ -429,95 +640,53 @@ def _parse_exception_table(code):
         return entries
 
 def _is_backward_jump(op):
-    return 'JUMP_BACKWARD' in opname[op]
+    return opname[op] in ('JUMP_BACKWARD',
+                          'JUMP_BACKWARD_NO_INTERRUPT',
+                          'ENTER_EXECUTOR')
 
-def _get_instructions_bytes(code, varname_from_oparg=None,
-                            names=None, co_consts=None,
-                            linestarts=None, line_offset=0,
-                            exception_entries=(), co_positions=None,
-                            show_caches=False):
+def _get_instructions_bytes(code, linestarts=None, line_offset=0, co_positions=None,
+                            show_caches=False, original_code=None, labels_map=None,
+                            arg_resolver=None):
     """Iterate over the instructions in a bytecode string.
 
     Generates a sequence of Instruction namedtuples giving the details of each
-    opcode.  Additional information about the code's runtime environment
-    (e.g. variable names, co_consts) can be specified using optional
-    arguments.
+    opcode.
 
     """
+    # Use the basic, unadaptive code for finding labels and actually walking the
+    # bytecode, since replacements like ENTER_EXECUTOR and INSTRUMENTED_* can
+    # mess that logic up pretty badly:
+    original_code = original_code or code
     co_positions = co_positions or iter(())
-    get_name = None if names is None else names.__getitem__
-    labels = set(findlabels(code))
-    for start, end, target, _, _ in exception_entries:
-        for i in range(start, end):
-            labels.add(target)
-    starts_line = None
-    for offset, op, arg in _unpack_opargs(code):
+
+    labels_map = labels_map or _make_labels_map(original_code)
+
+    starts_line = False
+    local_line_number = None
+    line_number = None
+    for offset, start_offset, op, arg in _unpack_opargs(original_code):
         if linestarts is not None:
-            starts_line = linestarts.get(offset, None)
-            if starts_line is not None:
-                starts_line += line_offset
-        is_jump_target = offset in labels
-        argval = None
-        argrepr = ''
+            starts_line = offset in linestarts
+            if starts_line:
+                local_line_number = linestarts[offset]
+            if local_line_number is not None:
+                line_number = local_line_number + line_offset
+            else:
+                line_number = None
         positions = Positions(*next(co_positions, ()))
         deop = _deoptop(op)
-        caches = _inline_cache_entries[deop]
-        if arg is not None:
-            #  Set argval to the dereferenced value of the argument when
-            #  available, and argrepr to the string representation of argval.
-            #    _disassemble_bytes needs the string repr of the
-            #    raw name index for LOAD_GLOBAL, LOAD_CONST, etc.
-            argval = arg
-            if deop in hasconst:
-                argval, argrepr = _get_const_info(deop, arg, co_consts)
-            elif deop in hasname:
-                if deop == LOAD_GLOBAL:
-                    argval, argrepr = _get_name_info(arg//2, get_name)
-                    if (arg & 1) and argrepr:
-                        argrepr = "NULL + " + argrepr
-                elif deop == LOAD_ATTR:
-                    argval, argrepr = _get_name_info(arg//2, get_name)
-                    if (arg & 1) and argrepr:
-                        argrepr = "NULL|self + " + argrepr
-                elif deop == LOAD_SUPER_ATTR:
-                    argval, argrepr = _get_name_info(arg//4, get_name)
-                    if (arg & 1) and argrepr:
-                        argrepr = "NULL|self + " + argrepr
-                else:
-                    argval, argrepr = _get_name_info(arg, get_name)
-            elif deop in hasjabs:
-                argval = arg*2
-                argrepr = "to " + repr(argval)
-            elif deop in hasjrel:
-                signed_arg = -arg if _is_backward_jump(deop) else arg
-                argval = offset + 2 + signed_arg*2
-                argval += 2 * caches
-                argrepr = "to " + repr(argval)
-            elif deop in haslocal or deop in hasfree:
-                argval, argrepr = _get_name_info(arg, varname_from_oparg)
-            elif deop in hascompare:
-                argval = cmp_op[arg>>4]
-                argrepr = argval
-            elif deop == FORMAT_VALUE:
-                argval, argrepr = FORMAT_VALUE_CONVERTERS[arg & 0x3]
-                argval = (argval, bool(arg & 0x4))
-                if argval[1]:
-                    if argrepr:
-                        argrepr += ', '
-                    argrepr += 'with format'
-            elif deop == MAKE_FUNCTION:
-                argrepr = ', '.join(s for i, s in enumerate(MAKE_FUNCTION_FLAGS)
-                                    if arg & (1<<i))
-            elif deop == BINARY_OP:
-                _, argrepr = _nb_ops[arg]
-            elif deop == CALL_INTRINSIC_1:
-                argrepr = _intrinsic_1_descs[arg]
-            elif deop == CALL_INTRINSIC_2:
-                argrepr = _intrinsic_2_descs[arg]
-        yield Instruction(_all_opname[op], op,
-                          arg, argval, argrepr,
-                          offset, starts_line, is_jump_target, positions)
-        caches = _inline_cache_entries[deop]
+        op = code[offset]
+
+        if arg_resolver:
+            argval, argrepr = arg_resolver.get_argval_argrepr(op, arg, offset)
+        else:
+            argval, argrepr = arg, repr(arg)
+
+        yield Instruction(_all_opname[op], op, arg, argval, argrepr,
+                          offset, start_offset, starts_line, line_number,
+                          labels_map.get(offset, None), positions)
+
+        caches = _get_cache_size(_all_opname[deop])
         if not caches:
             continue
         if not show_caches:
@@ -536,11 +705,12 @@ def _get_instructions_bytes(code, varname_from_oparg=None,
                 else:
                     argrepr = ""
                 yield Instruction(
-                    "CACHE", CACHE, 0, None, argrepr, offset, None, False,
+                    "CACHE", CACHE, 0, None, argrepr, offset, offset, False, None, None,
                     Positions(*next(co_positions, ()))
                 )
 
-def disassemble(co, lasti=-1, *, file=None, show_caches=False, adaptive=False):
+def disassemble(co, lasti=-1, *, file=None, show_caches=False, adaptive=False,
+                show_offsets=False):
     """Disassemble a code object."""
     linestarts = dict(findlinestarts(co))
     exception_entries = _parse_exception_table(co)
@@ -548,10 +718,11 @@ def disassemble(co, lasti=-1, *, file=None, show_caches=False, adaptive=False):
                        lasti, co._varname_from_oparg,
                        co.co_names, co.co_consts, linestarts, file=file,
                        exception_entries=exception_entries,
-                       co_positions=co.co_positions(), show_caches=show_caches)
+                       co_positions=co.co_positions(), show_caches=show_caches,
+                       original_code=co.co_code, show_offsets=show_offsets)
 
-def _disassemble_recursive(co, *, file=None, depth=None, show_caches=False, adaptive=False):
-    disassemble(co, file=file, show_caches=show_caches, adaptive=adaptive)
+def _disassemble_recursive(co, *, file=None, depth=None, show_caches=False, adaptive=False, show_offsets=False):
+    disassemble(co, file=file, show_caches=show_caches, adaptive=adaptive, show_offsets=show_offsets)
     if depth is None or depth > 0:
         if depth is not None:
             depth = depth - 1
@@ -560,53 +731,81 @@ def _disassemble_recursive(co, *, file=None, depth=None, show_caches=False, adap
                 print(file=file)
                 print("Disassembly of %r:" % (x,), file=file)
                 _disassemble_recursive(
-                    x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive
+                    x, file=file, depth=depth, show_caches=show_caches,
+                    adaptive=adaptive, show_offsets=show_offsets
                 )
 
+
+def _make_labels_map(original_code, exception_entries=()):
+    jump_targets = set(findlabels(original_code))
+    labels = set(jump_targets)
+    for start, end, target, _, _ in exception_entries:
+        labels.add(start)
+        labels.add(end)
+        labels.add(target)
+    labels = sorted(labels)
+    labels_map = {offset: i+1 for (i, offset) in enumerate(sorted(labels))}
+    for e in exception_entries:
+        e.start_label = labels_map[e.start]
+        e.end_label = labels_map[e.end]
+        e.target_label = labels_map[e.target]
+    return labels_map
+
+_NO_LINENO = '  --'
+
+def _get_lineno_width(linestarts):
+    if linestarts is None:
+        return 0
+    maxlineno = max(filter(None, linestarts.values()), default=-1)
+    if maxlineno == -1:
+        # Omit the line number column entirely if we have no line number info
+        return 0
+    lineno_width = max(3, len(str(maxlineno)))
+    if lineno_width < len(_NO_LINENO) and None in linestarts.values():
+        lineno_width = len(_NO_LINENO)
+    return lineno_width
+
+
 def _disassemble_bytes(code, lasti=-1, varname_from_oparg=None,
                        names=None, co_consts=None, linestarts=None,
                        *, file=None, line_offset=0, exception_entries=(),
-                       co_positions=None, show_caches=False):
-    # Omit the line number column entirely if we have no line number info
-    show_lineno = bool(linestarts)
-    if show_lineno:
-        maxlineno = max(linestarts.values()) + line_offset
-        if maxlineno >= 1000:
-            lineno_width = len(str(maxlineno))
-        else:
-            lineno_width = 3
-    else:
-        lineno_width = 0
-    maxoffset = len(code) - 2
-    if maxoffset >= 10000:
-        offset_width = len(str(maxoffset))
-    else:
-        offset_width = 4
-    for instr in _get_instructions_bytes(code, varname_from_oparg, names,
-                                         co_consts, linestarts,
-                                         line_offset=line_offset,
-                                         exception_entries=exception_entries,
-                                         co_positions=co_positions,
-                                         show_caches=show_caches):
-        new_source_line = (show_lineno and
-                           instr.starts_line is not None and
-                           instr.offset > 0)
-        if new_source_line:
-            print(file=file)
+                       co_positions=None, show_caches=False, original_code=None,
+                       show_offsets=False):
+
+    offset_width = len(str(max(len(code) - 2, 9999))) if show_offsets else 0
+
+    labels_map = _make_labels_map(original_code or code, exception_entries)
+    label_width = 4 + len(str(len(labels_map)))
+
+    formatter = Formatter(file=file,
+                          lineno_width=_get_lineno_width(linestarts),
+                          offset_width=offset_width,
+                          label_width=label_width,
+                          line_offset=line_offset)
+
+    arg_resolver = ArgResolver(co_consts, names, varname_from_oparg, labels_map)
+    instrs = _get_instructions_bytes(code, linestarts=linestarts,
+                                           line_offset=line_offset,
+                                           co_positions=co_positions,
+                                           show_caches=show_caches,
+                                           original_code=original_code,
+                                           labels_map=labels_map,
+                                           arg_resolver=arg_resolver)
+
+    print_instructions(instrs, exception_entries, formatter,
+                       show_caches=show_caches, lasti=lasti)
+
+
+def print_instructions(instrs, exception_entries, formatter, show_caches=False, lasti=-1):
+    for instr in instrs:
         if show_caches:
             is_current_instr = instr.offset == lasti
         else:
             # Each CACHE takes 2 bytes
             is_current_instr = instr.offset <= lasti \
-                <= instr.offset + 2 * _inline_cache_entries[_deoptop(instr.opcode)]
-        print(instr._disassemble(lineno_width, is_current_instr, offset_width),
-              file=file)
-    if exception_entries:
-        print("ExceptionTable:", file=file)
-        for entry in exception_entries:
-            lasti = " lasti" if entry.lasti else ""
-            end = entry.end-2
-            print(f"  {entry.start} to {end} -> {entry.target} [{entry.depth}]{lasti}", file=file)
+                <= instr.offset + 2 * _get_cache_size(_all_opname[_deoptop(instr.opcode)])
+        formatter.print_instruction(instr, is_current_instr)
+    formatter.print_exception_table(exception_entries)
 
 def _disassemble_str(source, **kwargs):
     """Compile the source string, then disassemble the code object."""
@@ -622,6 +821,7 @@ def _disassemble_str(source, **kwargs):
 
 def _unpack_opargs(code):
     extended_arg = 0
+    extended_args_offset = 0  # Number of EXTENDED_ARG instructions preceding the current instruction
     caches = 0
     for i in range(0, len(code), 2):
         # Skip inline CACHE entries:
@@ -630,7 +830,7 @@ def _unpack_opargs(code):
             continue
         op = code[i]
         deop = _deoptop(op)
-        caches = _inline_cache_entries[deop]
+        caches = _get_cache_size(_all_opname[deop])
         if deop in hasarg:
             arg = code[i+1] | extended_arg
             extended_arg = (arg << 8) if deop == EXTENDED_ARG else 0
@@ -642,7 +842,13 @@ def _unpack_opargs(code):
         else:
             arg = None
             extended_arg = 0
-        yield (i, op, arg)
+        if deop == EXTENDED_ARG:
+            extended_args_offset += 1
+            yield (i, i, op, arg)
+        else:
+            start_offset = i - extended_args_offset*2
+            yield (i, start_offset, op, arg)
+            extended_args_offset = 0
 
 def findlabels(code):
     """Detect all offsets in a byte code which are jump targets.
@@ -651,18 +857,10 @@ def findlabels(code):
 
     """
     labels = []
-    for offset, op, arg in _unpack_opargs(code):
+    for offset, _, op, arg in _unpack_opargs(code):
         if arg is not None:
-            deop = _deoptop(op)
-            caches = _inline_cache_entries[deop]
-            if deop in hasjrel:
-                if _is_backward_jump(deop):
-                    arg = -arg
-                label = offset + 2 + arg*2
-                label += 2 * caches
-            elif deop in hasjabs:
-                label = arg*2
-            else:
+            label = _get_jump_target(op, arg, offset)
+            if label is None:
                 continue
             if label not in labels:
                 labels.append(label)
@@ -672,10 +870,12 @@ def findlinestarts(code):
     """Find the offsets in a byte code which are start of lines in the source.
 
     Generate pairs (offset, lineno)
+    lineno will be an integer or None the offset does not have a source line.
     """
-    lastline = None
+
+    lastline = False # None is a valid line number
     for start, end, line in code.co_lines():
-        if line is not None and line != lastline:
+        if line is not lastline:
             lastline = line
             yield start, line
     return
@@ -691,7 +891,7 @@ def _find_imports(co):
 
     consts = co.co_consts
     names = co.co_names
-    opargs = [(op, arg) for _, op, arg in _unpack_opargs(co.co_code)
+    opargs = [(op, arg) for _, _, op, arg in _unpack_opargs(co.co_code)
                   if op != EXTENDED_ARG]
     for i, (op, oparg) in enumerate(opargs):
         if op == IMPORT_NAME and i >= 2:
@@ -713,7 +913,7 @@ def _find_store_names(co):
     }
 
     names = co.co_names
-    for _, op, arg in _unpack_opargs(co.co_code):
+    for _, _, op, arg in _unpack_opargs(co.co_code):
         if op in STORE_OPS:
             yield names[arg]
 
@@ -726,7 +926,7 @@ class Bytecode:
 
     Iterating over this yields the bytecode operations as Instruction instances.
     """
-    def __init__(self, x, *, first_line=None, current_offset=None, show_caches=False, adaptive=False):
+    def __init__(self, x, *, first_line=None, current_offset=None, show_caches=False, adaptive=False, show_offsets=False):
         self.codeobj = co = _get_code_object(x)
         if first_line is None:
             self.first_line = co.co_firstlineno
@@ -740,17 +940,22 @@ def __init__(self, x, *, first_line=None, current_offset=None, show_caches=False
         self.exception_entries = _parse_exception_table(co)
         self.show_caches = show_caches
         self.adaptive = adaptive
+        self.show_offsets = show_offsets
 
     def __iter__(self):
         co = self.codeobj
+        original_code = co.co_code
+        labels_map = _make_labels_map(original_code, self.exception_entries)
+        arg_resolver = ArgResolver(co.co_consts, co.co_names, co._varname_from_oparg,
+                                   labels_map)
         return _get_instructions_bytes(_get_code_array(co, self.adaptive),
-                                       co._varname_from_oparg,
-                                       co.co_names, co.co_consts,
-                                       self._linestarts,
+                                       linestarts=self._linestarts,
                                        line_offset=self._line_offset,
-                                       exception_entries=self.exception_entries,
                                        co_positions=co.co_positions(),
-                                       show_caches=self.show_caches)
+                                       show_caches=self.show_caches,
+                                       original_code=original_code,
+                                       labels_map=labels_map,
+                                       arg_resolver=arg_resolver)
 
     def __repr__(self):
         return "{}({!r})".format(self.__class__.__name__,
@@ -786,21 +991,26 @@ def dis(self):
                                lasti=offset,
                                exception_entries=self.exception_entries,
                                co_positions=co.co_positions(),
-                               show_caches=self.show_caches)
+                               show_caches=self.show_caches,
+                               original_code=co.co_code,
+                               show_offsets=self.show_offsets)
             return output.getvalue()
 
 
-def _test():
-    """Simple test program to disassemble a file."""
+def main():
     import argparse
 
     parser = argparse.ArgumentParser()
+    parser.add_argument('-C', '--show-caches', action='store_true',
+                        help='show inline caches')
+    parser.add_argument('-O', '--show-offsets', action='store_true',
+                        help='show instruction offsets')
     parser.add_argument('infile', type=argparse.FileType('rb'), nargs='?', default='-')
     args = parser.parse_args()
     with args.infile as infile:
         source = infile.read()
     code = compile(source, args.infile.name, "exec")
-    dis(code)
+    dis(code, show_caches=args.show_caches, show_offsets=args.show_offsets)
 
 if __name__ == "__main__":
-    _test()
+    main()
diff --git a/Lib/doctest.py b/Lib/doctest.py
index 2776d74bf9b586..d109b6c9e37343 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -105,7 +105,23 @@ def _test():
 from io import StringIO, IncrementalNewlineDecoder
 from collections import namedtuple
 
-TestResults = namedtuple('TestResults', 'failed attempted')
+
+class TestResults(namedtuple('TestResults', 'failed attempted')):
+    def __new__(cls, failed, attempted, *, skipped=0):
+        results = super().__new__(cls, failed, attempted)
+        results.skipped = skipped
+        return results
+
+    def __repr__(self):
+        if self.skipped:
+            return (f'TestResults(failed={self.failed}, '
+                    f'attempted={self.attempted}, '
+                    f'skipped={self.skipped})')
+        else:
+            # Leave the repr() unchanged for backward compatibility
+            # if skipped is zero
+            return super().__repr__()
+
 
 # There are 4 basic classes:
 #  - Example: a <source, want> pair, plus an intra-docstring line number.
@@ -575,9 +591,11 @@ def __hash__(self):
     def __lt__(self, other):
         if not isinstance(other, DocTest):
             return NotImplemented
-        return ((self.name, self.filename, self.lineno, id(self))
+        self_lno = self.lineno if self.lineno is not None else -1
+        other_lno = other.lineno if other.lineno is not None else -1
+        return ((self.name, self.filename, self_lno, id(self))
                 <
-                (other.name, other.filename, other.lineno, id(other)))
+                (other.name, other.filename, other_lno, id(other)))
 
 ######################################################################
 ## 3. DocTestParser
@@ -1110,7 +1128,7 @@ def _find_lineno(self, obj, source_lines):
             if source_lines is None:
                 return None
             pat = re.compile(r'^\s*class\s*%s\b' %
-                             getattr(obj, '__name__', '-'))
+                             re.escape(getattr(obj, '__name__', '-')))
             for i, line in enumerate(source_lines):
                 if pat.match(line):
                     lineno = i
@@ -1150,8 +1168,7 @@ class DocTestRunner:
     """
     A class used to run DocTest test cases, and accumulate statistics.
     The `run` method is used to process a single DocTest case.  It
-    returns a tuple `(f, t)`, where `t` is the number of test cases
-    tried, and `f` is the number of test cases that failed.
+    returns a TestResults instance.
 
         >>> tests = DocTestFinder().find(_TestClass)
         >>> runner = DocTestRunner(verbose=False)
@@ -1164,8 +1181,8 @@ class DocTestRunner:
         _TestClass.square -> TestResults(failed=0, attempted=1)
 
     The `summarize` method prints a summary of all the test cases that
-    have been run by the runner, and returns an aggregated `(f, t)`
-    tuple:
+    have been run by the runner, and returns an aggregated TestResults
+    instance:
 
         >>> runner.summarize(verbose=1)
         4 items passed all tests:
@@ -1178,13 +1195,15 @@ class DocTestRunner:
         Test passed.
         TestResults(failed=0, attempted=7)
 
-    The aggregated number of tried examples and failed examples is
-    also available via the `tries` and `failures` attributes:
+    The aggregated number of tried examples and failed examples is also
+    available via the `tries`, `failures` and `skips` attributes:
 
         >>> runner.tries
         7
         >>> runner.failures
         0
+        >>> runner.skips
+        0
 
     The comparison between expected outputs and actual outputs is done
     by an `OutputChecker`.  This comparison may be customized with a
@@ -1233,7 +1252,8 @@ def __init__(self, checker=None, verbose=None, optionflags=0):
         # Keep track of the examples we've run.
         self.tries = 0
         self.failures = 0
-        self._name2ft = {}
+        self.skips = 0
+        self._stats = {}
 
         # Create a fake output target for capturing doctest output.
         self._fakeout = _SpoofOut()
@@ -1302,13 +1322,11 @@ def __run(self, test, compileflags, out):
         Run the examples in `test`.  Write the outcome of each example
         with one of the `DocTestRunner.report_*` methods, using the
         writer function `out`.  `compileflags` is the set of compiler
-        flags that should be used to execute examples.  Return a tuple
-        `(f, t)`, where `t` is the number of examples tried, and `f`
-        is the number of examples that failed.  The examples are run
-        in the namespace `test.globs`.
+        flags that should be used to execute examples.  Return a TestResults
+        instance.  The examples are run in the namespace `test.globs`.
         """
-        # Keep track of the number of failures and tries.
-        failures = tries = 0
+        # Keep track of the number of failed, attempted, skipped examples.
+        failures = attempted = skips = 0
 
         # Save the option flags (since option directives can be used
         # to modify them).
@@ -1320,6 +1338,7 @@ def __run(self, test, compileflags, out):
 
         # Process each example.
         for examplenum, example in enumerate(test.examples):
+            attempted += 1
 
             # If REPORT_ONLY_FIRST_FAILURE is set, then suppress
             # reporting after the first failure.
@@ -1337,10 +1356,10 @@ def __run(self, test, compileflags, out):
 
             # If 'SKIP' is set, then skip this example.
             if self.optionflags & SKIP:
+                skips += 1
                 continue
 
             # Record that we started this example.
-            tries += 1
             if not quiet:
                 self.report_start(out, test, example)
 
@@ -1376,7 +1395,24 @@ def __run(self, test, compileflags, out):
 
             # The example raised an exception:  check if it was expected.
             else:
-                exc_msg = traceback.format_exception_only(*exception[:2])[-1]
+                formatted_ex = traceback.format_exception_only(*exception[:2])
+                if issubclass(exception[0], SyntaxError):
+                    # SyntaxError / IndentationError is special:
+                    # we don't care about the carets / suggestions / etc
+                    # We only care about the error message and notes.
+                    # They start with `SyntaxError:` (or any other class name)
+                    exception_line_prefixes = (
+                        f"{exception[0].__qualname__}:",
+                        f"{exception[0].__module__}.{exception[0].__qualname__}:",
+                    )
+                    exc_msg_index = next(
+                        index
+                        for index, line in enumerate(formatted_ex)
+                        if line.startswith(exception_line_prefixes)
+                    )
+                    formatted_ex = formatted_ex[exc_msg_index:]
+
+                exc_msg = "".join(formatted_ex)
                 if not quiet:
                     got += _exception_traceback(exception)
 
@@ -1418,19 +1454,22 @@ def __run(self, test, compileflags, out):
         # Restore the option flags (in case they were modified)
         self.optionflags = original_optionflags
 
-        # Record and return the number of failures and tries.
-        self.__record_outcome(test, failures, tries)
-        return TestResults(failures, tries)
+        # Record and return the number of failures and attempted.
+        self.__record_outcome(test, failures, attempted, skips)
+        return TestResults(failures, attempted, skipped=skips)
 
-    def __record_outcome(self, test, f, t):
+    def __record_outcome(self, test, failures, tries, skips):
         """
-        Record the fact that the given DocTest (`test`) generated `f`
-        failures out of `t` tried examples.
+        Record the fact that the given DocTest (`test`) generated `failures`
+        failures out of `tries` tried examples.
         """
-        f2, t2 = self._name2ft.get(test.name, (0,0))
-        self._name2ft[test.name] = (f+f2, t+t2)
-        self.failures += f
-        self.tries += t
+        failures2, tries2, skips2 = self._stats.get(test.name, (0, 0, 0))
+        self._stats[test.name] = (failures + failures2,
+                                  tries + tries2,
+                                  skips + skips2)
+        self.failures += failures
+        self.tries += tries
+        self.skips += skips
 
     __LINECACHE_FILENAME_RE = re.compile(r'<doctest '
                                          r'(?P<name>.+)'
@@ -1519,9 +1558,7 @@ def out(s):
     def summarize(self, verbose=None):
         """
         Print a summary of all the test cases that have been run by
-        this DocTestRunner, and return a tuple `(f, t)`, where `f` is
-        the total number of failed examples, and `t` is the total
-        number of tried examples.
+        this DocTestRunner, and return a TestResults instance.
 
         The optional `verbose` argument controls how detailed the
         summary is.  If the verbosity is not specified, then the
@@ -1532,59 +1569,61 @@ def summarize(self, verbose=None):
         notests = []
         passed = []
         failed = []
-        totalt = totalf = 0
-        for x in self._name2ft.items():
-            name, (f, t) = x
-            assert f <= t
-            totalt += t
-            totalf += f
-            if t == 0:
+        total_tries = total_failures = total_skips = 0
+        for item in self._stats.items():
+            name, (failures, tries, skips) = item
+            assert failures <= tries
+            total_tries += tries
+            total_failures += failures
+            total_skips += skips
+            if tries == 0:
                 notests.append(name)
-            elif f == 0:
-                passed.append( (name, t) )
+            elif failures == 0:
+                passed.append((name, tries))
             else:
-                failed.append(x)
+                failed.append(item)
         if verbose:
             if notests:
-                print(len(notests), "items had no tests:")
+                print(f"{len(notests)} items had no tests:")
                 notests.sort()
-                for thing in notests:
-                    print("   ", thing)
+                for name in notests:
+                    print(f"    {name}")
             if passed:
-                print(len(passed), "items passed all tests:")
+                print(f"{len(passed)} items passed all tests:")
                 passed.sort()
-                for thing, count in passed:
-                    print(" %3d tests in %s" % (count, thing))
+                for name, count in passed:
+                    print(f" {count:3d} tests in {name}")
         if failed:
             print(self.DIVIDER)
-            print(len(failed), "items had failures:")
+            print(f"{len(failed)} items had failures:")
             failed.sort()
-            for thing, (f, t) in failed:
-                print(" %3d of %3d in %s" % (f, t, thing))
+            for name, (failures, tries, skips) in failed:
+                print(f" {failures:3d} of {tries:3d} in {name}")
         if verbose:
-            print(totalt, "tests in", len(self._name2ft), "items.")
-            print(totalt - totalf, "passed and", totalf, "failed.")
-        if totalf:
-            print("***Test Failed***", totalf, "failures.")
+            print(f"{total_tries} tests in {len(self._stats)} items.")
+            print(f"{total_tries - total_failures} passed and {total_failures} failed.")
+        if total_failures:
+            msg = f"***Test Failed*** {total_failures} failures"
+            if total_skips:
+                msg = f"{msg} and {total_skips} skipped tests"
+            print(f"{msg}.")
         elif verbose:
             print("Test passed.")
-        return TestResults(totalf, totalt)
+        return TestResults(total_failures, total_tries, skipped=total_skips)
 
     #/////////////////////////////////////////////////////////////////
     # Backward compatibility cruft to maintain doctest.master.
     #/////////////////////////////////////////////////////////////////
     def merge(self, other):
-        d = self._name2ft
-        for name, (f, t) in other._name2ft.items():
+        d = self._stats
+        for name, (failures, tries, skips) in other._stats.items():
             if name in d:
-                # Don't print here by default, since doing
-                #     so breaks some of the buildbots
-                #print("*** DocTestRunner.merge: '" + name + "' in both" \
-                #    " testers; summing outcomes.")
-                f2, t2 = d[name]
-                f = f + f2
-                t = t + t2
-            d[name] = f, t
+                failures2, tries2, skips2 = d[name]
+                failures = failures + failures2
+                tries = tries + tries2
+                skips = skips + skips2
+            d[name] = (failures, tries, skips)
+
 
 class OutputChecker:
     """
@@ -1984,7 +2023,8 @@ class doctest.Tester, then merges the results into (or creates)
     else:
         master.merge(runner)
 
-    return TestResults(runner.failures, runner.tries)
+    return TestResults(runner.failures, runner.tries, skipped=runner.skips)
+
 
 def testfile(filename, module_relative=True, name=None, package=None,
              globs=None, verbose=None, report=True, optionflags=0,
@@ -2107,7 +2147,8 @@ class doctest.Tester, then merges the results into (or creates)
     else:
         master.merge(runner)
 
-    return TestResults(runner.failures, runner.tries)
+    return TestResults(runner.failures, runner.tries, skipped=runner.skips)
+
 
 def run_docstring_examples(f, globs, verbose=False, name="NoName",
                            compileflags=None, optionflags=0):
diff --git a/Lib/email/feedparser.py b/Lib/email/feedparser.py
index 885097c7dda067..06d6b4a3afcd07 100644
--- a/Lib/email/feedparser.py
+++ b/Lib/email/feedparser.py
@@ -37,6 +37,8 @@
 headerRE = re.compile(r'^(From |[\041-\071\073-\176]*:|[\t ])')
 EMPTYSTRING = ''
 NL = '\n'
+boundaryendRE = re.compile(
+    r'(?P<end>--)?(?P<ws>[ \t]*)(?P<linesep>\r\n|\r|\n)?$')
 
 NeedMoreData = object()
 
@@ -187,7 +189,7 @@ def close(self):
         assert not self._msgstack
         # Look for final set of defects
         if root.get_content_maintype() == 'multipart' \
-               and not root.is_multipart():
+               and not root.is_multipart() and not self._headersonly:
             defect = errors.MultipartInvariantViolationDefect()
             self.policy.handle_defect(root, defect)
         return root
@@ -327,9 +329,10 @@ def _parsegen(self):
             # this onto the input stream until we've scanned past the
             # preamble.
             separator = '--' + boundary
-            boundaryre = re.compile(
-                '(?P<sep>' + re.escape(separator) +
-                r')(?P<end>--)?(?P<ws>[ \t]*)(?P<linesep>\r\n|\r|\n)?$')
+            def boundarymatch(line):
+                if not line.startswith(separator):
+                    return None
+                return boundaryendRE.match(line, len(separator))
             capturing_preamble = True
             preamble = []
             linesep = False
@@ -341,7 +344,7 @@ def _parsegen(self):
                     continue
                 if line == '':
                     break
-                mo = boundaryre.match(line)
+                mo = boundarymatch(line)
                 if mo:
                     # If we're looking at the end boundary, we're done with
                     # this multipart.  If there was a newline at the end of
@@ -373,13 +376,13 @@ def _parsegen(self):
                         if line is NeedMoreData:
                             yield NeedMoreData
                             continue
-                        mo = boundaryre.match(line)
+                        mo = boundarymatch(line)
                         if not mo:
                             self._input.unreadline(line)
                             break
                     # Recurse to parse this subpart; the input stream points
                     # at the subpart's first line.
-                    self._input.push_eof_matcher(boundaryre.match)
+                    self._input.push_eof_matcher(boundarymatch)
                     for retval in self._parsegen():
                         if retval is NeedMoreData:
                             yield NeedMoreData
diff --git a/Lib/email/mime/audio.py b/Lib/email/mime/audio.py
index 065819b2a2101d..aa0c4905cbb2b4 100644
--- a/Lib/email/mime/audio.py
+++ b/Lib/email/mime/audio.py
@@ -6,7 +6,6 @@
 
 __all__ = ['MIMEAudio']
 
-from io import BytesIO
 from email import encoders
 from email.mime.nonmultipart import MIMENonMultipart
 
@@ -59,10 +58,8 @@ def _what(data):
     # sndhdr.what() had a pretty cruddy interface, unfortunately.  This is why
     # we re-do it here.  It would be easier to reverse engineer the Unix 'file'
     # command and use the standard 'magic' file, as shipped with a modern Unix.
-    hdr = data[:512]
-    fakefile = BytesIO(hdr)
     for testfn in _rules:
-        if res := testfn(hdr, fakefile):
+        if res := testfn(data):
             return res
     else:
         return None
@@ -74,7 +71,7 @@ def rule(rulefunc):
 
 
 @rule
-def _aiff(h, f):
+def _aiff(h):
     if not h.startswith(b'FORM'):
         return None
     if h[8:12] in {b'AIFC', b'AIFF'}:
@@ -84,7 +81,7 @@ def _aiff(h, f):
 
 
 @rule
-def _au(h, f):
+def _au(h):
     if h.startswith(b'.snd'):
         return 'basic'
     else:
@@ -92,7 +89,7 @@ def _au(h, f):
 
 
 @rule
-def _wav(h, f):
+def _wav(h):
     # 'RIFF' <len> 'WAVE' 'fmt ' <len>
     if not h.startswith(b'RIFF') or h[8:12] != b'WAVE' or h[12:16] != b'fmt ':
         return None
diff --git a/Lib/email/utils.py b/Lib/email/utils.py
index 81da5394ea1695..a49a8fa986ce0c 100644
--- a/Lib/email/utils.py
+++ b/Lib/email/utils.py
@@ -25,8 +25,6 @@
 import os
 import re
 import time
-import random
-import socket
 import datetime
 import urllib.parse
 
@@ -36,9 +34,6 @@
 
 from email._parseaddr import parsedate, parsedate_tz, _parsedate_tz
 
-# Intrapackage imports
-from email.charset import Charset
-
 COMMASPACE = ', '
 EMPTYSTRING = ''
 UEMPTYSTRING = ''
@@ -94,6 +89,8 @@ def formataddr(pair, charset='utf-8'):
             name.encode('ascii')
         except UnicodeEncodeError:
             if isinstance(charset, str):
+                # lazy import to improve module import time
+                from email.charset import Charset
                 charset = Charset(charset)
             encoded_name = charset.header_encode(name)
             return "%s <%s>" % (encoded_name, address)
@@ -181,6 +178,11 @@ def make_msgid(idstring=None, domain=None):
     portion of the message id after the '@'.  It defaults to the locally
     defined hostname.
     """
+    # Lazy imports to speedup module import time
+    # (no other functions in email.utils need these modules)
+    import random
+    import socket
+
     timeval = int(time.time()*100)
     pid = os.getpid()
     randint = random.getrandbits(64)
diff --git a/Lib/ensurepip/__init__.py b/Lib/ensurepip/__init__.py
index 5f4f1d75b43e64..21e4ad99a39628 100644
--- a/Lib/ensurepip/__init__.py
+++ b/Lib/ensurepip/__init__.py
@@ -10,7 +10,7 @@
 
 __all__ = ["version", "bootstrap"]
 _PACKAGE_NAMES = ('pip',)
-_PIP_VERSION = "23.1.2"
+_PIP_VERSION = "23.3.1"
 _PROJECTS = [
     ("pip", _PIP_VERSION, "py3"),
 ]
diff --git a/Lib/ensurepip/_bundled/pip-23.1.2-py3-none-any.whl b/Lib/ensurepip/_bundled/pip-23.1.2-py3-none-any.whl
deleted file mode 100644
index 6a2515615ccda3..00000000000000
Binary files a/Lib/ensurepip/_bundled/pip-23.1.2-py3-none-any.whl and /dev/null differ
diff --git a/Lib/ensurepip/_bundled/pip-23.3.1-py3-none-any.whl b/Lib/ensurepip/_bundled/pip-23.3.1-py3-none-any.whl
new file mode 100644
index 00000000000000..a4faf716b663e6
Binary files /dev/null and b/Lib/ensurepip/_bundled/pip-23.3.1-py3-none-any.whl differ
diff --git a/Lib/enum.py b/Lib/enum.py
index 6e497f7ef6a7de..a8a50a58380375 100644
--- a/Lib/enum.py
+++ b/Lib/enum.py
@@ -1,17 +1,16 @@
 import sys
 import builtins as bltns
 from types import MappingProxyType, DynamicClassAttribute
-from operator import or_ as _or_
-from functools import reduce
 
 
 __all__ = [
-        'EnumType', 'EnumMeta',
+        'EnumType', 'EnumMeta', 'EnumDict',
         'Enum', 'IntEnum', 'StrEnum', 'Flag', 'IntFlag', 'ReprEnum',
         'auto', 'unique', 'property', 'verify', 'member', 'nonmember',
         'FlagBoundary', 'STRICT', 'CONFORM', 'EJECT', 'KEEP',
         'global_flag_repr', 'global_enum_repr', 'global_str', 'global_enum',
         'EnumCheck', 'CONTINUOUS', 'NAMED_FLAGS', 'UNIQUE',
+        'pickle_by_global_name', 'pickle_by_enum_name',
         ]
 
 
@@ -62,8 +61,8 @@ def _is_sunder(name):
     return (
             len(name) > 2 and
             name[0] == name[-1] == '_' and
-            name[1:2] != '_' and
-            name[-2:-1] != '_'
+            name[1] != '_' and
+            name[-2] != '_'
             )
 
 def _is_internal_class(cls_name, obj):
@@ -82,7 +81,6 @@ def _is_private(cls_name, name):
     if (
             len(name) > pat_len
             and name.startswith(pattern)
-            and name[pat_len:pat_len+1] != ['_']
             and (name[-1] != '_' or name[-2] != '_')
         ):
         return True
@@ -157,7 +155,6 @@ def _dedent(text):
     Like textwrap.dedent.  Rewritten because we cannot import textwrap.
     """
     lines = text.split('\n')
-    blanks = 0
     for i, ch in enumerate(lines[0]):
         if ch != ' ':
             break
@@ -316,45 +313,8 @@ def __set_name__(self, enum_class, member_name):
                 ):
                 # no other instances found, record this member in _member_names_
                 enum_class._member_names_.append(member_name)
-        # if necessary, get redirect in place and then add it to _member_map_
-        found_descriptor = None
-        descriptor_type = None
-        class_type = None
-        for base in enum_class.__mro__[1:]:
-            attr = base.__dict__.get(member_name)
-            if attr is not None:
-                if isinstance(attr, (property, DynamicClassAttribute)):
-                    found_descriptor = attr
-                    class_type = base
-                    descriptor_type = 'enum'
-                    break
-                elif _is_descriptor(attr):
-                    found_descriptor = attr
-                    descriptor_type = descriptor_type or 'desc'
-                    class_type = class_type or base
-                    continue
-                else:
-                    descriptor_type = 'attr'
-                    class_type = base
-        if found_descriptor:
-            redirect = property()
-            redirect.member = enum_member
-            redirect.__set_name__(enum_class, member_name)
-            if descriptor_type in ('enum','desc'):
-                # earlier descriptor found; copy fget, fset, fdel to this one.
-                redirect.fget = getattr(found_descriptor, 'fget', None)
-                redirect._get = getattr(found_descriptor, '__get__', None)
-                redirect.fset = getattr(found_descriptor, 'fset', None)
-                redirect._set = getattr(found_descriptor, '__set__', None)
-                redirect.fdel = getattr(found_descriptor, 'fdel', None)
-                redirect._del = getattr(found_descriptor, '__delete__', None)
-            redirect._attr_type = descriptor_type
-            redirect._cls_type = class_type
-            setattr(enum_class, member_name, redirect)
-        else:
-            setattr(enum_class, member_name, enum_member)
-        # now add to _member_map_ (even aliases)
-        enum_class._member_map_[member_name] = enum_member
+
+        enum_class._add_member_(member_name, enum_member)
         try:
             # This may fail if value is not hashable. We can't add the value
             # to the map, and by-value lookups for this value will be
@@ -363,9 +323,10 @@ def __set_name__(self, enum_class, member_name):
         except TypeError:
             # keep track of the value in a list so containment checks are quick
             enum_class._unhashable_values_.append(value)
+            enum_class._unhashable_values_map_.setdefault(member_name, []).append(value)
 
 
-class _EnumDict(dict):
+class EnumDict(dict):
     """
     Track enum member order and ensure member names are not reused.
 
@@ -374,7 +335,7 @@ class _EnumDict(dict):
     """
     def __init__(self):
         super().__init__()
-        self._member_names = {} # use a dict to keep insertion order
+        self._member_names = {} # use a dict -- faster look-up than a list, and keeps insertion order since 3.7
         self._last_values = []
         self._ignore = []
         self._auto_called = False
@@ -388,22 +349,15 @@ def __setitem__(self, key, value):
 
         Single underscore (sunder) names are reserved.
         """
-        if _is_internal_class(self._cls_name, value):
-            import warnings
-            warnings.warn(
-                    "In 3.13 classes created inside an enum will not become a member.  "
-                    "Use the `member` decorator to keep the current behavior.",
-                    DeprecationWarning,
-                    stacklevel=2,
-                    )
         if _is_private(self._cls_name, key):
-            # also do nothing, name will be a normal attribute
+            # do nothing, name will be a normal attribute
             pass
         elif _is_sunder(key):
             if key not in (
                     '_order_',
                     '_generate_next_value_', '_numeric_repr_', '_missing_', '_ignore_',
                     '_iter_member_', '_iter_member_by_value_', '_iter_member_by_def_',
+                    '_add_alias_', '_add_value_alias_',
                     ):
                 raise ValueError(
                         '_sunder_ names, such as %r, are reserved for future Enum use'
@@ -440,10 +394,9 @@ def __setitem__(self, key, value):
             value = value.value
         elif _is_descriptor(value):
             pass
-        # TODO: uncomment next three lines in 3.13
-        # elif _is_internal_class(self._cls_name, value):
-        #     # do nothing, name will be a normal attribute
-        #     pass
+        elif _is_internal_class(self._cls_name, value):
+            # do nothing, name will be a normal attribute
+            pass
         else:
             if key in self:
                 # enum overwriting a descriptor?
@@ -480,6 +433,10 @@ def __setitem__(self, key, value):
                 self._last_values.append(value)
         super().__setitem__(key, value)
 
+    @property
+    def member_names(self):
+        return list(self._member_names)
+
     def update(self, members, **more_members):
         try:
             for name in members.keys():
@@ -490,6 +447,8 @@ def update(self, members, **more_members):
         for name, value in more_members.items():
             self[name] = value
 
+_EnumDict = EnumDict        # keep private name for backwards compatibility
+
 
 class EnumType(type):
     """
@@ -501,7 +460,7 @@ def __prepare__(metacls, cls, bases, **kwds):
         # check that previous enum members do not exist
         metacls._check_for_existing_members_(cls, bases)
         # create the namespace dict
-        enum_dict = _EnumDict()
+        enum_dict = EnumDict()
         enum_dict._cls_name = cls
         # inherit previous flags and _generate_next_value_ function
         member_type, first_enum = metacls._get_mixins_(cls, bases)
@@ -564,6 +523,7 @@ def __new__(metacls, cls, bases, classdict, *, boundary=None, _simple=False, **k
         classdict['_member_map_'] = {}
         classdict['_value2member_map_'] = {}
         classdict['_unhashable_values_'] = []
+        classdict['_unhashable_values_map_'] = {}
         classdict['_member_type_'] = member_type
         # now set the __repr__ for the value
         classdict['_value_repr_'] = metacls._find_data_repr_(cls, bases)
@@ -580,12 +540,16 @@ def __new__(metacls, cls, bases, classdict, *, boundary=None, _simple=False, **k
         try:
             exc = None
             enum_class = super().__new__(metacls, cls, bases, classdict, **kwds)
-        except RuntimeError as e:
-            # any exceptions raised by member.__new__ will get converted to a
-            # RuntimeError, so get that original exception back and raise it instead
-            exc = e.__cause__ or e
+        except Exception as e:
+            # since 3.12 the line "Error calling __set_name__ on '_proto_member' instance ..."
+            # is tacked on to the error instead of raising a RuntimeError
+            # recreate the exception to discard
+            exc = type(e)(str(e))
+            exc.__cause__ = e.__cause__
+            exc.__context__ = e.__context__
+            tb = e.__traceback__
         if exc is not None:
-            raise exc
+            raise exc.with_traceback(tb)
         #
         # update classdict with any changes made by __init_subclass__
         classdict.update(enum_class.__dict__)
@@ -738,6 +702,11 @@ def __call__(cls, value, names=None, *values, module=None, qualname=None, type=N
                 value = (value, names) + values
             return cls.__new__(cls, value)
         # otherwise, functional API: we're creating a new Enum type
+        if names is None and type is None:
+            # no body? no data-type? possibly wrong usage
+            raise TypeError(
+                    f"{cls} has no members; specify `names=()` if you meant to create a new, empty, enum"
+                    )
         return cls._create_(
                 class_name=value,
                 names=names,
@@ -757,7 +726,10 @@ def __contains__(cls, value):
         """
         if isinstance(value, cls):
             return True
-        return value in cls._value2member_map_ or value in cls._unhashable_values_
+        try:
+            return value in cls._value2member_map_
+        except TypeError:
+            return value in cls._unhashable_values_
 
     def __delattr__(cls, attr):
         # nicer error message when someone tries to delete an attribute
@@ -864,6 +836,8 @@ def _create_(cls, class_name, names, *, module=None, qualname=None, type=None, s
                 value = first_enum._generate_next_value_(name, start, count, last_values[:])
                 last_values.append(value)
                 names.append((name, value))
+        if names is None:
+            names = ()
 
         # Here, names is either an iterable of (name, value) or a mapping.
         for item in names:
@@ -922,7 +896,6 @@ def _convert_(cls, name, module, filter, source=None, *, boundary=None, as_globa
         body['__module__'] = module
         tmp_cls = type(name, (object, ), body)
         cls = _simple_enum(etype=cls, boundary=boundary or KEEP)(tmp_cls)
-        cls.__reduce_ex__ = _reduce_ex_by_global_name
         if as_global:
             global_enum(cls)
         else:
@@ -1052,7 +1025,57 @@ def _find_new_(mcls, classdict, member_type, first_enum):
         else:
             use_args = True
         return __new__, save_new, use_args
-EnumMeta = EnumType
+
+    def _add_member_(cls, name, member):
+        # _value_ structures are not updated
+        if name in cls._member_map_:
+            if cls._member_map_[name] is not member:
+                raise NameError('%r is already bound: %r' % (name, cls._member_map_[name]))
+            return
+        #
+        # if necessary, get redirect in place and then add it to _member_map_
+        found_descriptor = None
+        descriptor_type = None
+        class_type = None
+        for base in cls.__mro__[1:]:
+            attr = base.__dict__.get(name)
+            if attr is not None:
+                if isinstance(attr, (property, DynamicClassAttribute)):
+                    found_descriptor = attr
+                    class_type = base
+                    descriptor_type = 'enum'
+                    break
+                elif _is_descriptor(attr):
+                    found_descriptor = attr
+                    descriptor_type = descriptor_type or 'desc'
+                    class_type = class_type or base
+                    continue
+                else:
+                    descriptor_type = 'attr'
+                    class_type = base
+        if found_descriptor:
+            redirect = property()
+            redirect.member = member
+            redirect.__set_name__(cls, name)
+            if descriptor_type in ('enum', 'desc'):
+                # earlier descriptor found; copy fget, fset, fdel to this one.
+                redirect.fget = getattr(found_descriptor, 'fget', None)
+                redirect._get = getattr(found_descriptor, '__get__', None)
+                redirect.fset = getattr(found_descriptor, 'fset', None)
+                redirect._set = getattr(found_descriptor, '__set__', None)
+                redirect.fdel = getattr(found_descriptor, 'fdel', None)
+                redirect._del = getattr(found_descriptor, '__delete__', None)
+            redirect._attr_type = descriptor_type
+            redirect._cls_type = class_type
+            setattr(cls, name, redirect)
+        else:
+            setattr(cls, name, member)
+        # now add to _member_map_ (even aliases)
+        cls._member_map_[name] = member
+        #
+        cls._member_map_[name] = member
+
+EnumMeta = EnumType         # keep EnumMeta name for backwards compatibility
 
 
 class Enum(metaclass=EnumType):
@@ -1118,9 +1141,14 @@ def __new__(cls, value):
             pass
         except TypeError:
             # not there, now do long search -- O(n) behavior
-            for member in cls._member_map_.values():
-                if member._value_ == value:
-                    return member
+            for name, values in cls._unhashable_values_map_.items():
+                if value in values:
+                    return cls[name]
+        # still not found -- verify that members exist, in-case somebody got here mistakenly
+        # (such as via super when trying to override __new__)
+        if not cls._member_map_:
+            raise TypeError("%r has no members defined" % cls)
+        #
         # still not found -- try _missing_ hook
         try:
             exc = None
@@ -1156,6 +1184,33 @@ def __new__(cls, value):
     def __init__(self, *args, **kwds):
         pass
 
+    def _add_alias_(self, name):
+        self.__class__._add_member_(name, self)
+
+    def _add_value_alias_(self, value):
+        cls = self.__class__
+        try:
+            if value in cls._value2member_map_:
+                if cls._value2member_map_[value] is not self:
+                    raise ValueError('%r is already bound: %r' % (value, cls._value2member_map_[value]))
+                return
+        except TypeError:
+            # unhashable value, do long search
+            for m in cls._member_map_.values():
+                if m._value_ == value:
+                    if m is not self:
+                        raise ValueError('%r is already bound: %r' % (value, cls._value2member_map_[value]))
+                    return
+        try:
+            # This may fail if value is not hashable. We can't add the value
+            # to the map, and by-value lookups for this value will be
+            # linear.
+            cls._value2member_map_.setdefault(value, self)
+        except TypeError:
+            # keep track of the value in a list so containment checks are quick
+            cls._unhashable_values_.append(value)
+            cls._unhashable_values_map_.setdefault(self.name, []).append(value)
+
     @staticmethod
     def _generate_next_value_(name, start, count, last_values):
         """
@@ -1169,28 +1224,13 @@ def _generate_next_value_(name, start, count, last_values):
         if not last_values:
             return start
         try:
-            last = last_values[-1]
-            last_values.sort()
-            if last == last_values[-1]:
-                # no difference between old and new methods
-                return last + 1
-            else:
-                # trigger old method (with warning)
-                raise TypeError
+            last_value = sorted(last_values).pop()
         except TypeError:
-            import warnings
-            warnings.warn(
-                    "In 3.13 the default `auto()`/`_generate_next_value_` will require all values to be sortable and support adding +1\n"
-                    "and the value returned will be the largest value in the enum incremented by 1",
-                    DeprecationWarning,
-                    stacklevel=3,
-                    )
-            for v in last_values:
-                try:
-                    return v + 1
-                except TypeError:
-                    pass
-            return start
+            raise TypeError('unable to sort non-numeric values') from None
+        try:
+            return last_value + 1
+        except TypeError:
+            raise TypeError('unable to increment %r' % (last_value, )) from None
 
     @classmethod
     def _missing_(cls, value):
@@ -1205,14 +1245,13 @@ def __str__(self):
 
     def __dir__(self):
         """
-        Returns all members and all public methods
+        Returns public methods and other interesting attributes.
         """
-        if self.__class__._member_type_ is object:
-            interesting = set(['__class__', '__doc__', '__eq__', '__hash__', '__module__', 'name', 'value'])
-        else:
+        interesting = set()
+        if self.__class__._member_type_ is not object:
             interesting = set(object.__dir__(self))
         for name in getattr(self, '__dict__', []):
-            if name[0] != '_':
+            if name[0] != '_' and name not in self._member_map_:
                 interesting.add(name)
         for cls in self.__class__.mro():
             for name, obj in cls.__dict__.items():
@@ -1225,7 +1264,7 @@ def __dir__(self):
                     else:
                         # in case it was added by `dir(self)`
                         interesting.discard(name)
-                else:
+                elif name not in self._member_map_:
                     interesting.add(name)
         names = sorted(
                 set(['__class__', '__doc__', '__eq__', '__hash__', '__module__'])
@@ -1240,7 +1279,13 @@ def __hash__(self):
         return hash(self._name_)
 
     def __reduce_ex__(self, proto):
-        return getattr, (self.__class__, self._name_)
+        return self.__class__, (self._value_, )
+
+    def __deepcopy__(self,memo):
+        return self
+
+    def __copy__(self):
+        return self
 
     # enum.property is used to provide access to the `name` and
     # `value` attributes of enum members while keeping some measure of
@@ -1307,8 +1352,14 @@ def _generate_next_value_(name, start, count, last_values):
         return name.lower()
 
 
-def _reduce_ex_by_global_name(self, proto):
+def pickle_by_global_name(self, proto):
+    # should not be used with Flag-type enums
     return self.name
+_reduce_ex_by_global_name = pickle_by_global_name
+
+def pickle_by_enum_name(self, proto):
+    # should not be used with Flag-type enums
+    return getattr, (self.__class__, self._name_)
 
 class FlagBoundary(StrEnum):
     """
@@ -1330,23 +1381,6 @@ class Flag(Enum, boundary=STRICT):
     Support for flags
     """
 
-    def __reduce_ex__(self, proto):
-        cls = self.__class__
-        unknown = self._value_ & ~cls._flag_mask_
-        member_value = self._value_ & cls._flag_mask_
-        if unknown and member_value:
-            return _or_, (cls(member_value), unknown)
-        for val in _iter_bits_lsb(member_value):
-            rest = member_value & ~val
-            if rest:
-                return _or_, (cls(rest), cls._value2member_map_.get(val))
-            else:
-                break
-        if self._name_ is None:
-            return cls, (self._value_,)
-        else:
-            return getattr, (cls, self._name_)
-
     _numeric_repr_ = repr
 
     @staticmethod
@@ -1474,12 +1508,11 @@ def _missing_(cls, value):
         else:
             pseudo_member._name_ = None
         # use setdefault in case another thread already created a composite
-        # with this value, but only if all members are known
-        # note: zero is a special case -- add it
-        if not unknown:
-            pseudo_member = cls._value2member_map_.setdefault(value, pseudo_member)
-            if neg_value is not None:
-                cls._value2member_map_[neg_value] = pseudo_member
+        # with this value
+        # note: zero is a special case -- always add it
+        pseudo_member = cls._value2member_map_.setdefault(value, pseudo_member)
+        if neg_value is not None:
+            cls._value2member_map_[neg_value] = pseudo_member
         return pseudo_member
 
     def __contains__(self, other):
@@ -1551,14 +1584,10 @@ def __xor__(self, other):
 
     def __invert__(self):
         if self._inverted_ is None:
-            if self._boundary_ is KEEP:
-                # use all bits
+            if self._boundary_ in (EJECT, KEEP):
                 self._inverted_ = self.__class__(~self._value_)
             else:
-                # calculate flags not in this member
-                self._inverted_ = self.__class__(self._flag_mask_ ^ self._value_)
-            if isinstance(self._inverted_, self.__class__):
-                self._inverted_._inverted_ = self
+                self._inverted_ = self.__class__(self._singles_mask_ & ~self._value_)
         return self._inverted_
 
     __rand__ = __and__
@@ -1663,7 +1692,7 @@ def _simple_enum(etype=Enum, *, boundary=None, use_args=None):
     Class decorator that converts a normal class into an :class:`Enum`.  No
     safety checks are done, and some advanced behavior (such as
     :func:`__init_subclass__`) is not available.  Enum creation can be faster
-    using :func:`simple_enum`.
+    using :func:`_simple_enum`.
 
         >>> from enum import Enum, _simple_enum
         >>> @_simple_enum(Enum)
@@ -1694,7 +1723,8 @@ def convert_class(cls):
         body['_member_names_'] = member_names = []
         body['_member_map_'] = member_map = {}
         body['_value2member_map_'] = value2member_map = {}
-        body['_unhashable_values_'] = []
+        body['_unhashable_values_'] = unhashable_values = []
+        body['_unhashable_values_map_'] = {}
         body['_member_type_'] = member_type = etype._member_type_
         body['_value_repr_'] = etype._value_repr_
         if issubclass(etype, Flag):
@@ -1741,14 +1771,9 @@ def convert_class(cls):
             for name, value in attrs.items():
                 if isinstance(value, auto) and auto.value is _auto_null:
                     value = gnv(name, 1, len(member_names), gnv_last_values)
-                if value in value2member_map:
+                if value in value2member_map or value in unhashable_values:
                     # an alias to an existing member
-                    member = value2member_map[value]
-                    redirect = property()
-                    redirect.member = member
-                    redirect.__set_name__(enum_class, name)
-                    setattr(enum_class, name, redirect)
-                    member_map[name] = member
+                    enum_class(value)._add_alias_(name)
                 else:
                     # create the member
                     if use_args:
@@ -1763,12 +1788,12 @@ def convert_class(cls):
                     member._name_ = name
                     member.__objclass__ = enum_class
                     member.__init__(value)
-                    redirect = property()
-                    redirect.member = member
-                    redirect.__set_name__(enum_class, name)
-                    setattr(enum_class, name, redirect)
-                    member_map[name] = member
                     member._sort_order_ = len(member_names)
+                    if name not in ('name', 'value'):
+                        setattr(enum_class, name, member)
+                        member_map[name] = member
+                    else:
+                        enum_class._add_member_(name, member)
                     value2member_map[value] = member
                     if _is_single_bit(value):
                         # not a multi-bit alias, record in _member_names_ and _flag_mask_
@@ -1791,14 +1816,13 @@ def convert_class(cls):
                     if value.value is _auto_null:
                         value.value = gnv(name, 1, len(member_names), gnv_last_values)
                     value = value.value
-                if value in value2member_map:
+                try:
+                    contained = value in value2member_map
+                except TypeError:
+                    contained = value in unhashable_values
+                if contained:
                     # an alias to an existing member
-                    member = value2member_map[value]
-                    redirect = property()
-                    redirect.member = member
-                    redirect.__set_name__(enum_class, name)
-                    setattr(enum_class, name, redirect)
-                    member_map[name] = member
+                    enum_class(value)._add_alias_(name)
                 else:
                     # create the member
                     if use_args:
@@ -1814,14 +1838,22 @@ def convert_class(cls):
                     member.__objclass__ = enum_class
                     member.__init__(value)
                     member._sort_order_ = len(member_names)
-                    redirect = property()
-                    redirect.member = member
-                    redirect.__set_name__(enum_class, name)
-                    setattr(enum_class, name, redirect)
-                    member_map[name] = member
-                    value2member_map[value] = member
+                    if name not in ('name', 'value'):
+                        setattr(enum_class, name, member)
+                        member_map[name] = member
+                    else:
+                        enum_class._add_member_(name, member)
                     member_names.append(name)
                     gnv_last_values.append(value)
+                    try:
+                        # This may fail if value is not hashable. We can't add the value
+                        # to the map, and by-value lookups for this value will be
+                        # linear.
+                        enum_class._value2member_map_.setdefault(value, member)
+                    except TypeError:
+                        # keep track of the value in a list so containment checks are quick
+                        enum_class._unhashable_values_.append(value)
+                        enum_class._unhashable_values_map_.setdefault(name, []).append(value)
         if '__new__' in body:
             enum_class.__new_member__ = enum_class.__new__
         enum_class.__new__ = Enum.__new__
@@ -1906,7 +1938,8 @@ def __call__(self, enumeration):
                     missed = [v for v in values if v not in member_values]
                     if missed:
                         missing_names.append(name)
-                        missing_value |= reduce(_or_, missed)
+                        for val in missed:
+                            missing_value |= val
                 if missing_names:
                     if len(missing_names) == 1:
                         alias = 'alias %s is missing' % missing_names[0]
@@ -2073,7 +2106,6 @@ def _old_convert_(etype, name, module, filter, source=None, *, boundary=None):
         # unless some values aren't comparable, in which case sort by name
         members.sort(key=lambda t: t[0])
     cls = etype(name, members, module=module, boundary=boundary or KEEP)
-    cls.__reduce_ex__ = _reduce_ex_by_global_name
     return cls
 
 _stdlib_enums = IntEnum, StrEnum, IntFlag
diff --git a/Lib/fnmatch.py b/Lib/fnmatch.py
index d5e296f7748c1c..73acb1fe8d4106 100644
--- a/Lib/fnmatch.py
+++ b/Lib/fnmatch.py
@@ -78,6 +78,11 @@ def translate(pat):
     """
 
     STAR = object()
+    parts = _translate(pat, STAR, '.')
+    return _join_translated_parts(parts, STAR)
+
+
+def _translate(pat, STAR, QUESTION_MARK):
     res = []
     add = res.append
     i, n = 0, len(pat)
@@ -89,7 +94,7 @@ def translate(pat):
             if (not res) or res[-1] is not STAR:
                 add(STAR)
         elif c == '?':
-            add('.')
+            add(QUESTION_MARK)
         elif c == '[':
             j = i
             if j < n and pat[j] == '!':
@@ -146,9 +151,11 @@ def translate(pat):
         else:
             add(re.escape(c))
     assert i == n
+    return res
+
 
+def _join_translated_parts(inp, STAR):
     # Deal with STARs.
-    inp = res
     res = []
     add = res.append
     i, n = 0, len(inp)
diff --git a/Lib/functools.py b/Lib/functools.py
index aaf4291150fbbf..55990e742bf23f 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -19,8 +19,9 @@
 # import types, weakref  # Deferred to single_dispatch()
 from reprlib import recursive_repr
 from _thread import RLock
-from types import GenericAlias
 
+# Avoid importing types, so we can speedup import time
+GenericAlias = type(list[int])
 
 ################################################################################
 ### update_wrapper() and wraps() decorator
@@ -30,7 +31,7 @@
 # wrapper functions that can handle naive introspection
 
 WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__qualname__', '__doc__',
-                       '__annotations__')
+                       '__annotations__', '__type_params__')
 WRAPPER_UPDATES = ('__dict__',)
 def update_wrapper(wrapper,
                    wrapped,
@@ -236,7 +237,7 @@ def __ge__(self, other):
 
 def reduce(function, sequence, initial=_initial_missing):
     """
-    reduce(function, iterable[, initial]) -> value
+    reduce(function, iterable[, initial], /) -> value
 
     Apply a function of two arguments cumulatively to the items of a sequence
     or iterable, from left to right, so as to reduce the iterable to a single
@@ -483,8 +484,9 @@ def lru_cache(maxsize=128, typed=False):
     can grow without bound.
 
     If *typed* is True, arguments of different types will be cached separately.
-    For example, f(3.0) and f(3) will be treated as distinct calls with
-    distinct results.
+    For example, f(decimal.Decimal("3.0")) and f(3.0) will be treated as
+    distinct calls with distinct results. Some types such as str and int may
+    be cached separately even when typed is false.
 
     Arguments to the cached function must be hashable.
 
@@ -933,6 +935,9 @@ def __init__(self, func):
         self.dispatcher = singledispatch(func)
         self.func = func
 
+        import weakref # see comment in singledispatch function
+        self._method_cache = weakref.WeakKeyDictionary()
+
     def register(self, cls, method=None):
         """generic_method.register(cls, func) -> func
 
@@ -941,13 +946,27 @@ def register(self, cls, method=None):
         return self.dispatcher.register(cls, func=method)
 
     def __get__(self, obj, cls=None):
+        if self._method_cache is not None:
+            try:
+                _method = self._method_cache[obj]
+            except TypeError:
+                self._method_cache = None
+            except KeyError:
+                pass
+            else:
+                return _method
+
+        dispatch = self.dispatcher.dispatch
         def _method(*args, **kwargs):
-            method = self.dispatcher.dispatch(args[0].__class__)
-            return method.__get__(obj, cls)(*args, **kwargs)
+            return dispatch(args[0].__class__).__get__(obj, cls)(*args, **kwargs)
 
         _method.__isabstractmethod__ = self.__isabstractmethod__
         _method.register = self.register
         update_wrapper(_method, self.func)
+
+        if self._method_cache is not None:
+            self._method_cache[obj] = _method
+
         return _method
 
     @property
@@ -956,15 +975,17 @@ def __isabstractmethod__(self):
 
 
 ################################################################################
-### cached_property() - computed once per instance, cached as attribute
+### cached_property() - property result cached as instance attribute
 ################################################################################
 
+_NOT_FOUND = object()
 
 class cached_property:
     def __init__(self, func):
         self.func = func
         self.attrname = None
         self.__doc__ = func.__doc__
+        self.__module__ = func.__module__
 
     def __set_name__(self, owner, name):
         if self.attrname is None:
@@ -989,15 +1010,17 @@ def __get__(self, instance, owner=None):
                 f"instance to cache {self.attrname!r} property."
             )
             raise TypeError(msg) from None
-        val = self.func(instance)
-        try:
-            cache[self.attrname] = val
-        except TypeError:
-            msg = (
-                f"The '__dict__' attribute on {type(instance).__name__!r} instance "
-                f"does not support item assignment for caching {self.attrname!r} property."
-            )
-            raise TypeError(msg) from None
+        val = cache.get(self.attrname, _NOT_FOUND)
+        if val is _NOT_FOUND:
+            val = self.func(instance)
+            try:
+                cache[self.attrname] = val
+            except TypeError:
+                msg = (
+                    f"The '__dict__' attribute on {type(instance).__name__!r} instance "
+                    f"does not support item assignment for caching {self.attrname!r} property."
+                )
+                raise TypeError(msg) from None
         return val
 
     __class_getitem__ = classmethod(GenericAlias)
diff --git a/Lib/getpass.py b/Lib/getpass.py
index 6970d8adfbab36..bd0097ced94c5e 100644
--- a/Lib/getpass.py
+++ b/Lib/getpass.py
@@ -18,7 +18,6 @@
 import io
 import os
 import sys
-import warnings
 
 __all__ = ["getpass","getuser","GetPassWarning"]
 
@@ -118,6 +117,7 @@ def win_getpass(prompt='Password: ', stream=None):
 
 
 def fallback_getpass(prompt='Password: ', stream=None):
+    import warnings
     warnings.warn("Can not control echo on the terminal.", GetPassWarning,
                   stacklevel=2)
     if not stream:
@@ -156,7 +156,11 @@ def getuser():
 
     First try various environment variables, then the password
     database.  This works on Windows as long as USERNAME is set.
+    Any failure to find a username raises OSError.
 
+    .. versionchanged:: 3.13
+        Previously, various exceptions beyond just :exc:`OSError`
+        were raised.
     """
 
     for name in ('LOGNAME', 'USER', 'LNAME', 'USERNAME'):
@@ -164,9 +168,12 @@ def getuser():
         if user:
             return user
 
-    # If this fails, the exception will "explain" why
-    import pwd
-    return pwd.getpwuid(os.getuid())[0]
+    try:
+        import pwd
+        return pwd.getpwuid(os.getuid())[0]
+    except (ImportError, KeyError) as e:
+        raise OSError('No username set in the environment') from e
+
 
 # Bind the name getpass to the appropriate function
 try:
diff --git a/Lib/gettext.py b/Lib/gettext.py
index 6c5ec4e517f637..62cff81b7b3d49 100644
--- a/Lib/gettext.py
+++ b/Lib/gettext.py
@@ -46,6 +46,7 @@
 #   find this format documented anywhere.
 
 
+import operator
 import os
 import re
 import sys
@@ -166,14 +167,28 @@ def _parse(tokens, priority=-1):
 
 def _as_int(n):
     try:
-        i = round(n)
+        round(n)
     except TypeError:
         raise TypeError('Plural value must be an integer, got %s' %
                         (n.__class__.__name__,)) from None
+    return _as_int2(n)
+
+def _as_int2(n):
+    try:
+        return operator.index(n)
+    except TypeError:
+        pass
+
     import warnings
+    frame = sys._getframe(1)
+    stacklevel = 2
+    while frame.f_back is not None and frame.f_globals.get('__name__') == __name__:
+        stacklevel += 1
+        frame = frame.f_back
     warnings.warn('Plural value must be an integer, got %s' %
                   (n.__class__.__name__,),
-                  DeprecationWarning, 4)
+                  DeprecationWarning,
+                  stacklevel)
     return n
 
 
@@ -200,7 +215,7 @@ def c2py(plural):
             elif c == ')':
                 depth -= 1
 
-        ns = {'_as_int': _as_int}
+        ns = {'_as_int': _as_int, '__name__': __name__}
         exec('''if True:
             def func(n):
                 if not isinstance(n, int):
@@ -280,6 +295,7 @@ def gettext(self, message):
     def ngettext(self, msgid1, msgid2, n):
         if self._fallback:
             return self._fallback.ngettext(msgid1, msgid2, n)
+        n = _as_int2(n)
         if n == 1:
             return msgid1
         else:
@@ -293,6 +309,7 @@ def pgettext(self, context, message):
     def npgettext(self, context, msgid1, msgid2, n):
         if self._fallback:
             return self._fallback.npgettext(context, msgid1, msgid2, n)
+        n = _as_int2(n)
         if n == 1:
             return msgid1
         else:
@@ -422,10 +439,12 @@ def gettext(self, message):
         missing = object()
         tmsg = self._catalog.get(message, missing)
         if tmsg is missing:
-            if self._fallback:
-                return self._fallback.gettext(message)
-            return message
-        return tmsg
+            tmsg = self._catalog.get((message, self.plural(1)), missing)
+        if tmsg is not missing:
+            return tmsg
+        if self._fallback:
+            return self._fallback.gettext(message)
+        return message
 
     def ngettext(self, msgid1, msgid2, n):
         try:
@@ -444,10 +463,12 @@ def pgettext(self, context, message):
         missing = object()
         tmsg = self._catalog.get(ctxt_msg_id, missing)
         if tmsg is missing:
-            if self._fallback:
-                return self._fallback.pgettext(context, message)
-            return message
-        return tmsg
+            tmsg = self._catalog.get((ctxt_msg_id, self.plural(1)), missing)
+        if tmsg is not missing:
+            return tmsg
+        if self._fallback:
+            return self._fallback.pgettext(context, message)
+        return message
 
     def npgettext(self, context, msgid1, msgid2, n):
         ctxt_msg_id = self.CONTEXT % (context, msgid1)
@@ -575,6 +596,7 @@ def dngettext(domain, msgid1, msgid2, n):
     try:
         t = translation(domain, _localedirs.get(domain, None))
     except OSError:
+        n = _as_int2(n)
         if n == 1:
             return msgid1
         else:
@@ -594,6 +616,7 @@ def dnpgettext(domain, context, msgid1, msgid2, n):
     try:
         t = translation(domain, _localedirs.get(domain, None))
     except OSError:
+        n = _as_int2(n)
         if n == 1:
             return msgid1
         else:
diff --git a/Lib/glob.py b/Lib/glob.py
index a7256422d520fb..4a335a10766cf4 100644
--- a/Lib/glob.py
+++ b/Lib/glob.py
@@ -249,3 +249,63 @@ def escape(pathname):
 
 
 _dir_open_flags = os.O_RDONLY | getattr(os, 'O_DIRECTORY', 0)
+
+
+def translate(pat, *, recursive=False, include_hidden=False, seps=None):
+    """Translate a pathname with shell wildcards to a regular expression.
+
+    If `recursive` is true, the pattern segment '**' will match any number of
+    path segments; if '**' appears outside its own segment, ValueError will be
+    raised.
+
+    If `include_hidden` is true, wildcards can match path segments beginning
+    with a dot ('.').
+
+    If a sequence of separator characters is given to `seps`, they will be
+    used to split the pattern into segments and match path separators. If not
+    given, os.path.sep and os.path.altsep (where available) are used.
+    """
+    if not seps:
+        if os.path.altsep:
+            seps = (os.path.sep, os.path.altsep)
+        else:
+            seps = os.path.sep
+    escaped_seps = ''.join(map(re.escape, seps))
+    any_sep = f'[{escaped_seps}]' if len(seps) > 1 else escaped_seps
+    not_sep = f'[^{escaped_seps}]'
+    if include_hidden:
+        one_last_segment = f'{not_sep}+'
+        one_segment = f'{one_last_segment}{any_sep}'
+        any_segments = f'(?:.+{any_sep})?'
+        any_last_segments = '.*'
+    else:
+        one_last_segment = f'[^{escaped_seps}.]{not_sep}*'
+        one_segment = f'{one_last_segment}{any_sep}'
+        any_segments = f'(?:{one_segment})*'
+        any_last_segments = f'{any_segments}(?:{one_last_segment})?'
+
+    results = []
+    parts = re.split(any_sep, pat)
+    last_part_idx = len(parts) - 1
+    for idx, part in enumerate(parts):
+        if part == '*':
+            results.append(one_segment if idx < last_part_idx else one_last_segment)
+            continue
+        if recursive:
+            if part == '**':
+                if idx < last_part_idx:
+                    if parts[idx + 1] != '**':
+                        results.append(any_segments)
+                else:
+                    results.append(any_last_segments)
+                continue
+            elif '**' in part:
+                raise ValueError("Invalid pattern: '**' can only be an entire path component")
+        if part:
+            if not include_hidden and part[0] in '*?':
+                results.append(r'(?!\.)')
+            results.extend(fnmatch._translate(part, f'{not_sep}*', not_sep))
+        if idx < last_part_idx:
+            results.append(any_sep)
+    res = ''.join(results)
+    return fr'(?s:{res})\Z'
diff --git a/Lib/gzip.py b/Lib/gzip.py
index 8796c8d9fd9a2d..177f9080dc5af8 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -370,8 +370,9 @@ def close(self):
     def flush(self,zlib_mode=zlib.Z_SYNC_FLUSH):
         self._check_not_closed()
         if self.mode == WRITE:
-            # Ensure the compressor's buffer is flushed
             self._buffer.flush()
+            # Ensure the compressor's buffer is flushed
+            self.fileobj.write(self.compress.flush(zlib_mode))
             self.fileobj.flush()
 
     def fileno(self):
@@ -400,6 +401,9 @@ def seekable(self):
 
     def seek(self, offset, whence=io.SEEK_SET):
         if self.mode == WRITE:
+            self._check_not_closed()
+            # Flush buffer to ensure validity of self.offset
+            self._buffer.flush()
             if whence != io.SEEK_SET:
                 if whence == io.SEEK_CUR:
                     offset = self.offset + offset
diff --git a/Lib/http/client.py b/Lib/http/client.py
index 50f2b4680769c8..7bb5d824bb6da4 100644
--- a/Lib/http/client.py
+++ b/Lib/http/client.py
@@ -172,6 +172,13 @@ def _encode(data, name='data'):
             "if you want to send it encoded in UTF-8." %
             (name.title(), data[err.start:err.end], name)) from None
 
+def _strip_ipv6_iface(enc_name: bytes) -> bytes:
+    """Remove interface scope from IPv6 address."""
+    enc_name, percent, _ = enc_name.partition(b"%")
+    if percent:
+        assert enc_name.startswith(b'['), enc_name
+        enc_name += b']'
+    return enc_name
 
 class HTTPMessage(email.message.Message):
     # XXX The only usage of this method is in
@@ -221,8 +228,9 @@ def _read_headers(fp):
             break
     return headers
 
-def parse_headers(fp, _class=HTTPMessage):
-    """Parses only RFC2822 headers from a file pointer.
+def _parse_header_lines(header_lines, _class=HTTPMessage):
+    """
+    Parses only RFC2822 headers from header lines.
 
     email Parser wants to see strings rather than bytes.
     But a TextIOWrapper around self.rfile would buffer too many bytes
@@ -231,10 +239,15 @@ def parse_headers(fp, _class=HTTPMessage):
     to parse.
 
     """
-    headers = _read_headers(fp)
-    hstring = b''.join(headers).decode('iso-8859-1')
+    hstring = b''.join(header_lines).decode('iso-8859-1')
     return email.parser.Parser(_class=_class).parsestr(hstring)
 
+def parse_headers(fp, _class=HTTPMessage):
+    """Parses only RFC2822 headers from a file pointer."""
+
+    headers = _read_headers(fp)
+    return _parse_header_lines(headers, _class)
+
 
 class HTTPResponse(io.BufferedIOBase):
 
@@ -858,7 +871,7 @@ def __init__(self, host, port=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
         self._tunnel_host = None
         self._tunnel_port = None
         self._tunnel_headers = {}
-        self._proxy_response_headers = None
+        self._raw_proxy_headers = None
 
         (self.host, self.port) = self._get_hostport(host, port)
 
@@ -945,11 +958,11 @@ def _tunnel(self):
         try:
             (version, code, message) = response._read_status()
 
-            self._proxy_response_headers = parse_headers(response.fp)
+            self._raw_proxy_headers = _read_headers(response.fp)
 
             if self.debuglevel > 0:
-                for hdr, val in self._proxy_response_headers.items():
-                    print("header:", hdr + ":", val)
+                for header in self._raw_proxy_headers:
+                    print('header:', header.decode())
 
             if code != http.HTTPStatus.OK:
                 self.close()
@@ -958,6 +971,20 @@ def _tunnel(self):
         finally:
             response.close()
 
+    def get_proxy_response_headers(self):
+        """
+        Returns a dictionary with the headers of the response
+        received from the proxy server to the CONNECT request
+        sent to set the tunnel.
+
+        If the CONNECT request was not sent, the method returns None.
+        """
+        return (
+            _parse_header_lines(self._raw_proxy_headers)
+            if self._raw_proxy_headers is not None
+            else None
+        )
+
     def connect(self):
         """Connect to the host and port specified in __init__."""
         sys.audit("http.client.connect", self, self.host, self.port)
@@ -1003,7 +1030,7 @@ def send(self, data):
             print("send:", repr(data))
         if hasattr(data, "read") :
             if self.debuglevel > 0:
-                print("sendIng a read()able")
+                print("sending a readable")
             encode = self._is_textIO(data)
             if encode and self.debuglevel > 0:
                 print("encoding file using iso-8859-1")
@@ -1033,7 +1060,7 @@ def _output(self, s):
 
     def _read_readable(self, readable):
         if self.debuglevel > 0:
-            print("sendIng a read()able")
+            print("reading a readable")
         encode = self._is_textIO(readable)
         if encode and self.debuglevel > 0:
             print("encoding file using iso-8859-1")
@@ -1174,7 +1201,7 @@ def putrequest(self, method, url, skip_host=False,
                         netloc_enc = netloc.encode("ascii")
                     except UnicodeEncodeError:
                         netloc_enc = netloc.encode("idna")
-                    self.putheader('Host', netloc_enc)
+                    self.putheader('Host', _strip_ipv6_iface(netloc_enc))
                 else:
                     if self._tunnel_host:
                         host = self._tunnel_host
@@ -1191,8 +1218,9 @@ def putrequest(self, method, url, skip_host=False,
                     # As per RFC 273, IPv6 address should be wrapped with []
                     # when used as Host header
 
-                    if host.find(':') >= 0:
+                    if ":" in host:
                         host_enc = b'[' + host_enc + b']'
+                        host_enc = _strip_ipv6_iface(host_enc)
 
                     if port == self.default_port:
                         self.putheader('Host', host_enc)
diff --git a/Lib/http/server.py b/Lib/http/server.py
index ca6240d9a921e6..ee7a9b6aa55b88 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -2,18 +2,18 @@
 
 Note: BaseHTTPRequestHandler doesn't implement any HTTP request; see
 SimpleHTTPRequestHandler for simple implementations of GET, HEAD and POST,
-and CGIHTTPRequestHandler for CGI scripts.
+and (deprecated) CGIHTTPRequestHandler for CGI scripts.
 
-It does, however, optionally implement HTTP/1.1 persistent connections,
-as of version 0.3.
+It does, however, optionally implement HTTP/1.1 persistent connections.
 
 Notes on CGIHTTPRequestHandler
 ------------------------------
 
-This class implements GET and POST requests to cgi-bin scripts.
+This class is deprecated. It implements GET and POST requests to cgi-bin scripts.
 
-If the os.fork() function is not present (e.g. on Windows),
-subprocess.Popen() is used as a fallback, with slightly altered semantics.
+If the os.fork() function is not present (Windows), subprocess.Popen() is used,
+with slightly altered but never documented semantics.  Use from a threaded
+process is likely to trigger a warning at os.fork() time.
 
 In all cases, the implementation is intentionally naive -- all
 requests are executed synchronously.
@@ -986,6 +986,12 @@ class CGIHTTPRequestHandler(SimpleHTTPRequestHandler):
 
     """
 
+    def __init__(self, *args, **kwargs):
+        import warnings
+        warnings._deprecated("http.server.CGIHTTPRequestHandler",
+                             remove=(3, 15))
+        super().__init__(*args, **kwargs)
+
     # Determine platform specifics
     have_fork = hasattr(os, 'fork')
 
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index e97e3ca01ef30c..f258797c6e0fb3 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -4,6 +4,14 @@ Released on 2023-10-02
 =========================
 
 
+gh-104719: Remove IDLE's modification of tokenize.tabsize and test
+other uses of tokenize data and methods.
+
+gh-104499: Fix completions for Tk Aqua 8.7 (currently blank).
+
+gh-104486: Make About print both tcl and tk versions if different,
+as is expected someday.
+
 gh-88496 Fix IDLE test hang on macOS.
 
 gh-103314 Support sys.last_exc after exceptions in Shell.
diff --git a/Lib/idlelib/autocomplete_w.py b/Lib/idlelib/autocomplete_w.py
index 0f835a9cc1d010..24320b5a3bffab 100644
--- a/Lib/idlelib/autocomplete_w.py
+++ b/Lib/idlelib/autocomplete_w.py
@@ -182,16 +182,11 @@ def show_window(self, comp_lists, index, complete, mode, userWantsWin):
         self.userwantswindow = userWantsWin
         self.lasttypedstart = self.start
 
-        # Put widgets in place
         self.autocompletewindow = acw = Toplevel(self.widget)
-        # Put it in a position so that it is not seen.
-        acw.wm_geometry("+10000+10000")
-        # Make it float
+        acw.withdraw()
         acw.wm_overrideredirect(1)
         try:
-            # This command is only needed and available on Tk >= 8.4.0 for OSX
-            # Without it, call tips intrude on the typing process by grabbing
-            # the focus.
+            # Prevent grabbing focus on macOS.
             acw.tk.call("::tk::unsupported::MacWindowStyle", "style", acw._w,
                         "help", "noActivates")
         except TclError:
@@ -271,6 +266,7 @@ def winconfig_event(self, event):
                 # place acw above current line
                 new_y -= acw_height
             acw.wm_geometry("+%d+%d" % (new_x, new_y))
+            acw.deiconify()
             acw.update_idletasks()
         except TclError:
             pass
diff --git a/Lib/idlelib/browser.py b/Lib/idlelib/browser.py
index 4fe64dced60aca..8b9060e57072ea 100644
--- a/Lib/idlelib/browser.py
+++ b/Lib/idlelib/browser.py
@@ -250,9 +250,11 @@ def closure():
             class Nested_in_closure: pass
     ModuleBrowser(parent, file, _htest=True)
 
+
 if __name__ == "__main__":
     if len(sys.argv) == 1:  # If pass file on command line, unittest fails.
         from unittest import main
         main('idlelib.idle_test.test_browser', verbosity=2, exit=False)
+
     from idlelib.idle_test.htest import run
     run(_module_browser)
diff --git a/Lib/idlelib/calltip_w.py b/Lib/idlelib/calltip_w.py
index 278546064adde2..9386376058c791 100644
--- a/Lib/idlelib/calltip_w.py
+++ b/Lib/idlelib/calltip_w.py
@@ -193,6 +193,7 @@ def calltip_hide(event):
 
     text.focus_set()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_calltip_w', verbosity=2, exit=False)
diff --git a/Lib/idlelib/config.py b/Lib/idlelib/config.py
index 2b09d79470b47c..92992fd9cce9cd 100644
--- a/Lib/idlelib/config.py
+++ b/Lib/idlelib/config.py
@@ -597,7 +597,9 @@ def GetCoreKeys(self, keySetName=None):
         problem getting any core binding there will be an 'ultimate last
         resort fallback' to the CUA-ish bindings defined here.
         """
+        # TODO: = dict(sorted([(v-event, keys), ...]))?
         keyBindings={
+            # vitual-event: list of key events.
             '<<copy>>': ['<Control-c>', '<Control-C>'],
             '<<cut>>': ['<Control-x>', '<Control-X>'],
             '<<paste>>': ['<Control-v>', '<Control-V>'],
@@ -880,7 +882,7 @@ def _dump():  # htest # (not really, but ignore in coverage)
     line, crc = 0, 0
 
     def sprint(obj):
-        global line, crc
+        nonlocal line, crc
         txt = str(obj)
         line += 1
         crc = crc32(txt.encode(encoding='utf-8'), crc)
@@ -889,7 +891,7 @@ def sprint(obj):
 
     def dumpCfg(cfg):
         print('\n', cfg, '\n')  # Cfg has variable '0xnnnnnnnn' address.
-        for key in sorted(cfg.keys()):
+        for key in sorted(cfg):
             sections = cfg[key].sections()
             sprint(key)
             sprint(sections)
@@ -904,8 +906,11 @@ def dumpCfg(cfg):
     dumpCfg(idleConf.userCfg)
     print('\nlines = ', line, ', crc = ', crc, sep='')
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_config', verbosity=2, exit=False)
 
-    # Run revised _dump() as htest?
+    _dump()
+    # Run revised _dump() (700+ lines) as htest?  More sorting.
+    # Perhaps as window with tabs for textviews, making it config viewer.
diff --git a/Lib/idlelib/config_key.py b/Lib/idlelib/config_key.py
index bb07231cd590b6..e5f67e8d4069ee 100644
--- a/Lib/idlelib/config_key.py
+++ b/Lib/idlelib/config_key.py
@@ -351,4 +351,4 @@ def cancel(self, event=None):
     main('idlelib.idle_test.test_config_key', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
-    run(GetKeysDialog)
+    run(GetKeysWindow)
diff --git a/Lib/idlelib/configdialog.py b/Lib/idlelib/configdialog.py
index cda7966d558a51..eedf97bf74fe6a 100644
--- a/Lib/idlelib/configdialog.py
+++ b/Lib/idlelib/configdialog.py
@@ -211,14 +211,8 @@ def help(self):
                   contents=help_common+help_pages.get(page, ''))
 
     def deactivate_current_config(self):
-        """Remove current key bindings.
-        Iterate over window instances defined in parent and remove
-        the keybindings.
-        """
-        # Before a config is saved, some cleanup of current
-        # config must be done - remove the previous keybindings.
-        win_instances = self.parent.instance_dict.keys()
-        for instance in win_instances:
+        """Remove current key bindings in current windows."""
+        for instance in self.parent.instance_dict:
             instance.RemoveKeybindings()
 
     def activate_config_changes(self):
@@ -227,8 +221,7 @@ def activate_config_changes(self):
         Dynamically update the current parent window instances
         with some of the configuration changes.
         """
-        win_instances = self.parent.instance_dict.keys()
-        for instance in win_instances:
+        for instance in self.parent.instance_dict:
             instance.ResetColorizer()
             instance.ResetFont()
             instance.set_notabs_indentwidth()
@@ -583,22 +576,23 @@ def create_page_highlight(self):
                 (*)theme_message: Label
         """
         self.theme_elements = {
-            'Normal Code or Text': ('normal', '00'),
-            'Code Context': ('context', '01'),
-            'Python Keywords': ('keyword', '02'),
-            'Python Definitions': ('definition', '03'),
-            'Python Builtins': ('builtin', '04'),
-            'Python Comments': ('comment', '05'),
-            'Python Strings': ('string', '06'),
-            'Selected Text': ('hilite', '07'),
-            'Found Text': ('hit', '08'),
-            'Cursor': ('cursor', '09'),
-            'Editor Breakpoint': ('break', '10'),
-            'Shell Prompt': ('console', '11'),
-            'Error Text': ('error', '12'),
-            'Shell User Output': ('stdout', '13'),
-            'Shell User Exception': ('stderr', '14'),
-            'Line Number': ('linenumber', '16'),
+            # Display-name: internal-config-tag-name.
+            'Normal Code or Text': 'normal',
+            'Code Context': 'context',
+            'Python Keywords': 'keyword',
+            'Python Definitions': 'definition',
+            'Python Builtins': 'builtin',
+            'Python Comments': 'comment',
+            'Python Strings': 'string',
+            'Selected Text': 'hilite',
+            'Found Text': 'hit',
+            'Cursor': 'cursor',
+            'Editor Breakpoint': 'break',
+            'Shell Prompt': 'console',
+            'Error Text': 'error',
+            'Shell User Output': 'stdout',
+            'Shell User Exception': 'stderr',
+            'Line Number': 'linenumber',
             }
         self.builtin_name = tracers.add(
                 StringVar(self), self.var_changed_builtin_name)
@@ -658,7 +652,7 @@ def tem(event, elem=element):
                 # event.widget.winfo_top_level().highlight_target.set(elem)
                 self.highlight_target.set(elem)
             text.tag_bind(
-                    self.theme_elements[element][0], '<ButtonPress-1>', tem)
+                    self.theme_elements[element], '<ButtonPress-1>', tem)
         text['state'] = 'disabled'
         self.style.configure('frame_color_set.TFrame', borderwidth=1,
                              relief='solid')
@@ -765,8 +759,7 @@ def load_theme_cfg(self):
             self.builtinlist.SetMenu(item_list, item_list[0])
         self.set_theme_type()
         # Load theme element option menu.
-        theme_names = list(self.theme_elements.keys())
-        theme_names.sort(key=lambda x: self.theme_elements[x][1])
+        theme_names = list(self.theme_elements)
         self.targetlist.SetMenu(theme_names, theme_names[0])
         self.paint_theme_sample()
         self.set_highlight_target()
@@ -893,7 +886,7 @@ def on_new_color_set(self):
         new_color = self.color.get()
         self.style.configure('frame_color_set.TFrame', background=new_color)
         plane = 'foreground' if self.fg_bg_toggle.get() else 'background'
-        sample_element = self.theme_elements[self.highlight_target.get()][0]
+        sample_element = self.theme_elements[self.highlight_target.get()]
         self.highlight_sample.tag_config(sample_element, **{plane: new_color})
         theme = self.custom_name.get()
         theme_element = sample_element + '-' + plane
@@ -1007,7 +1000,7 @@ def set_color_sample(self):
             frame_color_set
         """
         # Set the color sample area.
-        tag = self.theme_elements[self.highlight_target.get()][0]
+        tag = self.theme_elements[self.highlight_target.get()]
         plane = 'foreground' if self.fg_bg_toggle.get() else 'background'
         color = self.highlight_sample.tag_cget(tag, plane)
         self.style.configure('frame_color_set.TFrame', background=color)
@@ -1037,7 +1030,7 @@ def paint_theme_sample(self):
         else:  # User theme
             theme = self.custom_name.get()
         for element_title in self.theme_elements:
-            element = self.theme_elements[element_title][0]
+            element = self.theme_elements[element_title]
             colors = idleConf.GetHighlight(theme, element)
             if element == 'cursor':  # Cursor sample needs special painting.
                 colors['background'] = idleConf.GetHighlight(
@@ -1477,12 +1470,13 @@ def load_keys_list(self, keyset_name):
             reselect = True
             list_index = self.bindingslist.index(ANCHOR)
         keyset = idleConf.GetKeySet(keyset_name)
-        bind_names = list(keyset.keys())
+        # 'set' is dict mapping virtual event to list of key events.
+        bind_names = list(keyset)
         bind_names.sort()
         self.bindingslist.delete(0, END)
         for bind_name in bind_names:
             key = ' '.join(keyset[bind_name])
-            bind_name = bind_name[2:-2]  # Trim off the angle brackets.
+            bind_name = bind_name[2:-2]  # Trim double angle brackets.
             if keyset_name in changes['keys']:
                 # Handle any unsaved changes to this key set.
                 if bind_name in changes['keys'][keyset_name]:
diff --git a/Lib/idlelib/debugger.py b/Lib/idlelib/debugger.py
index 452c62b42655b3..f487b4c4b16a60 100644
--- a/Lib/idlelib/debugger.py
+++ b/Lib/idlelib/debugger.py
@@ -1,3 +1,20 @@
+"""Debug user code with a GUI interface to a subclass of bdb.Bdb.
+
+The Idb idb and Debugger gui instances each need a reference to each
+other or to an rpc proxy for each other.
+
+If IDLE is started with '-n', so that user code and idb both run in the
+IDLE process, Debugger is called without an idb.  Debugger.__init__
+calls Idb with its incomplete self.  Idb.__init__ stores gui and gui
+then stores idb.
+
+If IDLE is started normally, so that user code executes in a separate
+process, debugger_r.start_remote_debugger is called, executing in the
+IDLE process.  It calls 'start the debugger' in the remote process,
+which calls Idb with a gui proxy.  Then Debugger is called in the IDLE
+for more.
+"""
+
 import bdb
 import os
 
@@ -10,66 +27,95 @@
 
 
 class Idb(bdb.Bdb):
+    "Supply user_line and user_exception functions for Bdb."
 
     def __init__(self, gui):
-        self.gui = gui  # An instance of Debugger or proxy of remote.
-        bdb.Bdb.__init__(self)
+        self.gui = gui  # An instance of Debugger or proxy thereof.
+        super().__init__()
 
     def user_line(self, frame):
-        if self.in_rpc_code(frame):
+        """Handle a user stopping or breaking at a line.
+
+        Convert frame to a string and send it to gui.
+        """
+        if _in_rpc_code(frame):
             self.set_step()
             return
-        message = self.__frame2message(frame)
+        message = _frame2message(frame)
         try:
             self.gui.interaction(message, frame)
         except TclError:  # When closing debugger window with [x] in 3.x
             pass
 
-    def user_exception(self, frame, info):
-        if self.in_rpc_code(frame):
+    def user_exception(self, frame, exc_info):
+        """Handle an the occurrence of an exception."""
+        if _in_rpc_code(frame):
             self.set_step()
             return
-        message = self.__frame2message(frame)
-        self.gui.interaction(message, frame, info)
-
-    def in_rpc_code(self, frame):
-        if frame.f_code.co_filename.count('rpc.py'):
-            return True
-        else:
-            prev_frame = frame.f_back
-            prev_name = prev_frame.f_code.co_filename
-            if 'idlelib' in prev_name and 'debugger' in prev_name:
-                # catch both idlelib/debugger.py and idlelib/debugger_r.py
-                # on both Posix and Windows
-                return False
-            return self.in_rpc_code(prev_frame)
-
-    def __frame2message(self, frame):
-        code = frame.f_code
-        filename = code.co_filename
-        lineno = frame.f_lineno
-        basename = os.path.basename(filename)
-        message = f"{basename}:{lineno}"
-        if code.co_name != "?":
-            message = f"{message}: {code.co_name}()"
-        return message
+        message = _frame2message(frame)
+        self.gui.interaction(message, frame, exc_info)
+
+def _in_rpc_code(frame):
+    "Determine if debugger is within RPC code."
+    if frame.f_code.co_filename.count('rpc.py'):
+        return True  # Skip this frame.
+    else:
+        prev_frame = frame.f_back
+        if prev_frame is None:
+            return False
+        prev_name = prev_frame.f_code.co_filename
+        if 'idlelib' in prev_name and 'debugger' in prev_name:
+            # catch both idlelib/debugger.py and idlelib/debugger_r.py
+            # on both Posix and Windows
+            return False
+        return _in_rpc_code(prev_frame)
+
+def _frame2message(frame):
+    """Return a message string for frame."""
+    code = frame.f_code
+    filename = code.co_filename
+    lineno = frame.f_lineno
+    basename = os.path.basename(filename)
+    message = f"{basename}:{lineno}"
+    if code.co_name != "?":
+        message = f"{message}: {code.co_name}()"
+    return message
 
 
 class Debugger:
-
-    vstack = vsource = vlocals = vglobals = None
+    """The debugger interface.
+
+    This class handles the drawing of the debugger window and
+    the interactions with the underlying debugger session.
+    """
+    vstack = None
+    vsource = None
+    vlocals = None
+    vglobals = None
+    stackviewer = None
+    localsviewer = None
+    globalsviewer = None
 
     def __init__(self, pyshell, idb=None):
+        """Instantiate and draw a debugger window.
+
+        :param pyshell: An instance of the PyShell Window
+        :type  pyshell: :class:`idlelib.pyshell.PyShell`
+
+        :param idb: An instance of the IDLE debugger (optional)
+        :type  idb: :class:`idlelib.debugger.Idb`
+        """
         if idb is None:
             idb = Idb(self)
         self.pyshell = pyshell
         self.idb = idb  # If passed, a proxy of remote instance.
         self.frame = None
         self.make_gui()
-        self.interacting = 0
+        self.interacting = False
         self.nesting_level = 0
 
     def run(self, *args):
+        """Run the debugger."""
         # Deal with the scenario where we've already got a program running
         # in the debugger and we want to start another. If that is the case,
         # our second 'run' was invoked from an event dispatched not from
@@ -104,12 +150,13 @@ def run(self, *args):
             self.root.after(100, lambda: self.run(*args))
             return
         try:
-            self.interacting = 1
+            self.interacting = True
             return self.idb.run(*args)
         finally:
-            self.interacting = 0
+            self.interacting = False
 
     def close(self, event=None):
+        """Close the debugger and window."""
         try:
             self.quit()
         except Exception:
@@ -127,6 +174,7 @@ def close(self, event=None):
         self.top.destroy()
 
     def make_gui(self):
+        """Draw the debugger gui on the screen."""
         pyshell = self.pyshell
         self.flist = pyshell.flist
         self.root = root = pyshell.root
@@ -135,11 +183,11 @@ def make_gui(self):
         self.top.wm_iconname("Debug")
         top.wm_protocol("WM_DELETE_WINDOW", self.close)
         self.top.bind("<Escape>", self.close)
-        #
+
         self.bframe = bframe = Frame(top)
         self.bframe.pack(anchor="w")
         self.buttons = bl = []
-        #
+
         self.bcont = b = Button(bframe, text="Go", command=self.cont)
         bl.append(b)
         self.bstep = b = Button(bframe, text="Step", command=self.step)
@@ -150,14 +198,14 @@ def make_gui(self):
         bl.append(b)
         self.bret = b = Button(bframe, text="Quit", command=self.quit)
         bl.append(b)
-        #
+
         for b in bl:
             b.configure(state="disabled")
             b.pack(side="left")
-        #
+
         self.cframe = cframe = Frame(bframe)
         self.cframe.pack(side="left")
-        #
+
         if not self.vstack:
             self.__class__.vstack = BooleanVar(top)
             self.vstack.set(1)
@@ -180,20 +228,20 @@ def make_gui(self):
         self.bglobals = Checkbutton(cframe,
             text="Globals", command=self.show_globals, variable=self.vglobals)
         self.bglobals.grid(row=1, column=1)
-        #
+
         self.status = Label(top, anchor="w")
         self.status.pack(anchor="w")
         self.error = Label(top, anchor="w")
         self.error.pack(anchor="w", fill="x")
         self.errorbg = self.error.cget("background")
-        #
+
         self.fstack = Frame(top, height=1)
         self.fstack.pack(expand=1, fill="both")
         self.flocals = Frame(top)
         self.flocals.pack(expand=1, fill="both")
         self.fglobals = Frame(top, height=1)
         self.fglobals.pack(expand=1, fill="both")
-        #
+
         if self.vstack.get():
             self.show_stack()
         if self.vlocals.get():
@@ -204,7 +252,7 @@ def make_gui(self):
     def interaction(self, message, frame, info=None):
         self.frame = frame
         self.status.configure(text=message)
-        #
+
         if info:
             type, value, tb = info
             try:
@@ -223,28 +271,28 @@ def interaction(self, message, frame, info=None):
             tb = None
             bg = self.errorbg
         self.error.configure(text=m1, background=bg)
-        #
+
         sv = self.stackviewer
         if sv:
             stack, i = self.idb.get_stack(self.frame, tb)
             sv.load_stack(stack, i)
-        #
+
         self.show_variables(1)
-        #
+
         if self.vsource.get():
             self.sync_source_line()
-        #
+
         for b in self.buttons:
             b.configure(state="normal")
-        #
+
         self.top.wakeup()
         # Nested main loop: Tkinter's main loop is not reentrant, so use
         # Tcl's vwait facility, which reenters the event loop until an
-        # event handler sets the variable we're waiting on
+        # event handler sets the variable we're waiting on.
         self.nesting_level += 1
         self.root.tk.call('vwait', '::idledebugwait')
         self.nesting_level -= 1
-        #
+
         for b in self.buttons:
             b.configure(state="disabled")
         self.status.configure(text="")
@@ -288,8 +336,6 @@ def quit(self):
     def abort_loop(self):
         self.root.tk.call('set', '::idledebugwait', '1')
 
-    stackviewer = None
-
     def show_stack(self):
         if not self.stackviewer and self.vstack.get():
             self.stackviewer = sv = StackViewer(self.fstack, self.flist, self)
@@ -311,9 +357,6 @@ def show_frame(self, stackitem):
         self.frame = stackitem[0]  # lineno is stackitem[1]
         self.show_variables()
 
-    localsviewer = None
-    globalsviewer = None
-
     def show_locals(self):
         lv = self.localsviewer
         if self.vlocals.get():
@@ -354,26 +397,32 @@ def show_variables(self, force=0):
         if gv:
             gv.load_dict(gdict, force, self.pyshell.interp.rpcclt)
 
-    def set_breakpoint_here(self, filename, lineno):
+    def set_breakpoint(self, filename, lineno):
+        """Set a filename-lineno breakpoint in the debugger.
+
+        Called from self.load_breakpoints and EW.setbreakpoint
+        """
         self.idb.set_break(filename, lineno)
 
-    def clear_breakpoint_here(self, filename, lineno):
+    def clear_breakpoint(self, filename, lineno):
         self.idb.clear_break(filename, lineno)
 
     def clear_file_breaks(self, filename):
         self.idb.clear_all_file_breaks(filename)
 
     def load_breakpoints(self):
-        "Load PyShellEditorWindow breakpoints into subprocess debugger"
+        """Load PyShellEditorWindow breakpoints into subprocess debugger."""
         for editwin in self.pyshell.flist.inversedict:
             filename = editwin.io.filename
             try:
                 for lineno in editwin.breakpoints:
-                    self.set_breakpoint_here(filename, lineno)
+                    self.set_breakpoint(filename, lineno)
             except AttributeError:
                 continue
 
+
 class StackViewer(ScrolledList):
+    "Code stack viewer for debugger GUI."
 
     def __init__(self, master, flist, gui):
         if macosx.isAquaTk():
@@ -414,12 +463,12 @@ def load_stack(self, stack, index=None):
             self.select(index)
 
     def popup_event(self, event):
-        "override base method"
+        "Override base method."
         if self.stack:
             return ScrolledList.popup_event(self, event)
 
     def fill_menu(self):
-        "override base method"
+        "Override base method."
         menu = self.menu
         menu.add_command(label="Go to source line",
                          command=self.goto_source_line)
@@ -427,12 +476,12 @@ def fill_menu(self):
                          command=self.show_stack_frame)
 
     def on_select(self, index):
-        "override base method"
+        "Override base method."
         if 0 <= index < len(self.stack):
             self.gui.show_frame(self.stack[index])
 
     def on_double(self, index):
-        "override base method"
+        "Override base method."
         self.show_source(index)
 
     def goto_source_line(self):
@@ -457,6 +506,7 @@ def show_source(self, index):
 
 
 class NamespaceViewer:
+    "Global/local namespace viewer for debugger GUI."
 
     def __init__(self, master, title, dict=None):
         width = 0
@@ -509,7 +559,7 @@ def load_dict(self, dict, force=0, rpc_client=None):
             # There is also an obscure bug in sorted(dict) where the
             # interpreter gets into a loop requesting non-existing dict[0],
             # dict[1], dict[2], etc from the debugger_r.DictProxy.
-            ###
+            # TODO recheck above; see debugger_r 159ff, debugobj 60.
             keys_list = dict.keys()
             names = sorted(keys_list)
             ###
@@ -544,6 +594,7 @@ def load_dict(self, dict, force=0, rpc_client=None):
     def close(self):
         self.frame.destroy()
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_debugger', verbosity=2, exit=False)
diff --git a/Lib/idlelib/debugobj.py b/Lib/idlelib/debugobj.py
index 71d01c7070df54..156377f8ed26ac 100644
--- a/Lib/idlelib/debugobj.py
+++ b/Lib/idlelib/debugobj.py
@@ -93,7 +93,8 @@ def setfunction(value, key=key, object=self.object):
 
 class DictTreeItem(SequenceTreeItem):
     def keys(self):
-        keys = list(self.object.keys())
+        # TODO return sorted(self.object)
+        keys = list(self.object)
         try:
             keys.sort()
         except:
@@ -119,7 +120,7 @@ def make_objecttreeitem(labeltext, object, setfunction=None):
     return c(labeltext, object, setfunction)
 
 
-def _object_browser(parent):  # htest #
+def _debug_object_browser(parent):  # htest #
     import sys
     from tkinter import Toplevel
     top = Toplevel(parent)
@@ -134,9 +135,10 @@ def _object_browser(parent):  # htest #
     node = TreeNode(sc.canvas, None, item)
     node.update()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_debugobj', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
-    run(_object_browser)
+    run(_debug_object_browser)
diff --git a/Lib/idlelib/delegator.py b/Lib/idlelib/delegator.py
index 55c95da8532f47..93ae8bbd43ff44 100644
--- a/Lib/idlelib/delegator.py
+++ b/Lib/idlelib/delegator.py
@@ -28,6 +28,7 @@ def setdelegate(self, delegate):
         self.resetcache()
         self.delegate = delegate
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_delegator', verbosity=2)
diff --git a/Lib/idlelib/dynoption.py b/Lib/idlelib/dynoption.py
index d5dfc3eda13f60..b8937f7106ca75 100644
--- a/Lib/idlelib/dynoption.py
+++ b/Lib/idlelib/dynoption.py
@@ -29,6 +29,7 @@ def SetMenu(self,valueList,value=None):
         if value:
             self.variable.set(value)
 
+
 def _dyn_option_menu(parent):  # htest #
     from tkinter import Toplevel # + StringVar, Button
 
@@ -49,6 +50,7 @@ def update():
     button = Button(top, text="Change option set", command=update)
     button.pack()
 
+
 if __name__ == '__main__':
     # Only module without unittests because of intention to replace.
     from idlelib.idle_test.htest import run
diff --git a/Lib/idlelib/editor.py b/Lib/idlelib/editor.py
index 21402ad7139173..6ad383f460c7ee 100644
--- a/Lib/idlelib/editor.py
+++ b/Lib/idlelib/editor.py
@@ -1571,7 +1571,7 @@ def reindent_to(self, column):
     # blocks are found).
 
     def guess_indent(self):
-        opener, indented = IndentSearcher(self.text, self.tabwidth).run()
+        opener, indented = IndentSearcher(self.text).run()
         if opener and indented:
             raw, indentsmall = get_line_indent(opener, self.tabwidth)
             raw, indentlarge = get_line_indent(indented, self.tabwidth)
@@ -1609,15 +1609,10 @@ def get_line_indent(line, tabwidth):
 
 
 class IndentSearcher:
+    "Manage initial indent guess, returned by run method."
 
-    # .run() chews over the Text widget, looking for a block opener
-    # and the stmt following it.  Returns a pair,
-    #     (line containing block opener, line containing stmt)
-    # Either or both may be None.
-
-    def __init__(self, text, tabwidth):
+    def __init__(self, text):
         self.text = text
-        self.tabwidth = tabwidth
         self.i = self.finished = 0
         self.blkopenline = self.indentedline = None
 
@@ -1633,7 +1628,8 @@ def readline(self):
     def tokeneater(self, type, token, start, end, line,
                    INDENT=tokenize.INDENT,
                    NAME=tokenize.NAME,
-                   OPENERS=('class', 'def', 'for', 'if', 'try', 'while')):
+                   OPENERS=('class', 'def', 'for', 'if', 'match', 'try',
+                            'while', 'with')):
         if self.finished:
             pass
         elif type == NAME and token in OPENERS:
@@ -1643,23 +1639,22 @@ def tokeneater(self, type, token, start, end, line,
             self.finished = 1
 
     def run(self):
-        save_tabsize = tokenize.tabsize
-        tokenize.tabsize = self.tabwidth
+        """Return 2 lines containing block opener and and indent.
+
+        Either the indent line or both may be None.
+        """
         try:
-            try:
-                tokens = tokenize.generate_tokens(self.readline)
-                for token in tokens:
-                    self.tokeneater(*token)
-            except (tokenize.TokenError, SyntaxError):
-                # since we cut off the tokenizer early, we can trigger
-                # spurious errors
-                pass
-        finally:
-            tokenize.tabsize = save_tabsize
+            tokens = tokenize.generate_tokens(self.readline)
+            for token in tokens:
+                self.tokeneater(*token)
+        except (tokenize.TokenError, SyntaxError):
+            # Stopping the tokenizer early can trigger spurious errors.
+            pass
         return self.blkopenline, self.indentedline
 
 ### end autoindent code ###
 
+
 def prepstr(s):
     """Extract the underscore from a string.
 
@@ -1753,6 +1748,7 @@ def _editor_window(parent):  # htest #
     # Does not stop error, neither does following
     # edit.text.bind("<<close-window>>", edit.close_event)
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_editor', verbosity=2, exit=False)
diff --git a/Lib/idlelib/filelist.py b/Lib/idlelib/filelist.py
index f87781d2570fe0..e27e5d32a0ff63 100644
--- a/Lib/idlelib/filelist.py
+++ b/Lib/idlelib/filelist.py
@@ -124,6 +124,7 @@ def _test():  # TODO check and convert to htest
     if flist.inversedict:
         root.mainloop()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_filelist', verbosity=2)
diff --git a/Lib/idlelib/grep.py b/Lib/idlelib/grep.py
index 12513594b76f8f..ef14349960bfa2 100644
--- a/Lib/idlelib/grep.py
+++ b/Lib/idlelib/grep.py
@@ -204,15 +204,17 @@ def _grep_dialog(parent):  # htest #
     frame.pack()
     text = Text(frame, height=5)
     text.pack()
+    text.insert('1.0', 'import grep')
 
     def show_grep_dialog():
-        text.tag_add(SEL, "1.0", END)
+        text.tag_add(SEL, "1.0", '1.end')
         grep(text, flist=flist)
-        text.tag_remove(SEL, "1.0", END)
+        text.tag_remove(SEL, "1.0", '1.end')
 
     button = Button(frame, text="Show GrepDialog", command=show_grep_dialog)
     button.pack()
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_grep', verbosity=2, exit=False)
diff --git a/Lib/idlelib/help.py b/Lib/idlelib/help.py
index cc027b9cef4f5b..3cc7e36e35555b 100644
--- a/Lib/idlelib/help.py
+++ b/Lib/idlelib/help.py
@@ -278,7 +278,8 @@ def copy_strip():
             out.write(line.rstrip() + b'\n')
     print(f'{src} copied to {dst}')
 
-def show_idlehelp(parent):
+
+def _helpwindow(parent):
     "Create HelpWindow; called from Idle Help event handler."
     filename = join(abspath(dirname(__file__)), 'help.html')
     if not isfile(filename):
@@ -286,9 +287,10 @@ def show_idlehelp(parent):
         return
     HelpWindow(parent, filename, 'IDLE Help (%s)' % python_version())
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_help', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
-    run(show_idlehelp)
+    run(_helpwindow)
diff --git a/Lib/idlelib/help_about.py b/Lib/idlelib/help_about.py
index a0085a40b980ef..cfa4ca781f087d 100644
--- a/Lib/idlelib/help_about.py
+++ b/Lib/idlelib/help_about.py
@@ -11,15 +11,12 @@
 
 from idlelib import textview
 
-version = python_version()
+pyver = python_version()
 
-
-def build_bits():
-    "Return bits for platform."
-    if sys.platform == 'darwin':
-        return '64' if sys.maxsize > 2**32 else '32'
-    else:
-        return architecture()[0][:2]
+if sys.platform == 'darwin':
+    bits = '64' if sys.maxsize > 2**32 else '32'
+else:
+    bits = architecture()[0][:2]
 
 
 class AboutDialog(Toplevel):
@@ -45,7 +42,7 @@ def __init__(self, parent, title=None, *, _htest=False, _utest=False):
         self.create_widgets()
         self.resizable(height=False, width=False)
         self.title(title or
-                   f'About IDLE {version} ({build_bits()} bit)')
+                   f'About IDLE {pyver} ({bits} bit)')
         self.transient(parent)
         self.grab_set()
         self.protocol("WM_DELETE_WINDOW", self.ok)
@@ -76,8 +73,8 @@ def create_widgets(self):
                        bg=self.bg, font=('courier', 24, 'bold'))
         header.grid(row=0, column=0, sticky=E, padx=10, pady=10)
 
-        tk_patchlevel = self.info_patchlevel()
-        ext = '.png' if tk_patchlevel >= (8, 6) else '.gif'
+        tkpatch = self._root().getvar('tk_patchLevel')
+        ext = '.png' if tkpatch >= '8.6' else '.gif'
         icon = os.path.join(os.path.abspath(os.path.dirname(__file__)),
                             'Icons', f'idle_48{ext}')
         self.icon_image = PhotoImage(master=self._root(), file=icon)
@@ -102,13 +99,11 @@ def create_widgets(self):
               height=2, bg=self.bg).grid(row=8, column=0, sticky=EW,
                                          columnspan=3, padx=5, pady=5)
 
-        pyver = Label(frame_background,
-                      text='Python version:  ' + version,
-                      fg=self.fg, bg=self.bg)
-        pyver.grid(row=9, column=0, sticky=W, padx=10, pady=0)
-        tkver = Label(frame_background, text=f'Tk version:  {tk_patchlevel}',
-                      fg=self.fg, bg=self.bg)
-        tkver.grid(row=9, column=1, sticky=W, padx=2, pady=0)
+        tclver = str(self.info_patchlevel())
+        tkver = ' and ' + tkpatch if tkpatch != tclver else ''
+        versions = f"Python {pyver} with tcl/tk {tclver}{tkver}"
+        vers = Label(frame_background, text=versions, fg=self.fg, bg=self.bg)
+        vers.grid(row=9, column=0, sticky=W, padx=10, pady=0)
         py_buttons = Frame(frame_background, bg=self.bg)
         py_buttons.grid(row=10, column=0, columnspan=2, sticky=NSEW)
         self.py_license = Button(py_buttons, text='License', width=8,
@@ -128,10 +123,10 @@ def create_widgets(self):
               height=2, bg=self.bg).grid(row=11, column=0, sticky=EW,
                                          columnspan=3, padx=5, pady=5)
 
-        idlever = Label(frame_background,
-                        text='IDLE version:   ' + version,
+        idle = Label(frame_background,
+                        text='IDLE',
                         fg=self.fg, bg=self.bg)
-        idlever.grid(row=12, column=0, sticky=W, padx=10, pady=0)
+        idle.grid(row=12, column=0, sticky=W, padx=10, pady=0)
         idle_buttons = Frame(frame_background, bg=self.bg)
         idle_buttons.grid(row=13, column=0, columnspan=3, sticky=NSEW)
         self.readme = Button(idle_buttons, text='README', width=8,
diff --git a/Lib/idlelib/idle_test/htest.py b/Lib/idlelib/idle_test/htest.py
index d297f8aa0094ee..997f85ff5a78b2 100644
--- a/Lib/idlelib/idle_test/htest.py
+++ b/Lib/idlelib/idle_test/htest.py
@@ -1,38 +1,36 @@
-'''Run human tests of Idle's window, dialog, and popup widgets.
-
-run(*tests)
-Create a master Tk window.  Within that, run each callable in tests
-after finding the matching test spec in this file.  If tests is empty,
-run an htest for each spec dict in this file after finding the matching
-callable in the module named in the spec.  Close the window to skip or
-end the test.
-
-In a tested module, let X be a global name bound to a callable (class
-or function) whose .__name__ attribute is also X (the usual situation).
-The first parameter of X must be 'parent'.  When called, the parent
-argument will be the root window.  X must create a child Toplevel
-window (or subclass thereof).  The Toplevel may be a test widget or
-dialog, in which case the callable is the corresponding class.  Or the
-Toplevel may contain the widget to be tested or set up a context in
-which a test widget is invoked.  In this latter case, the callable is a
-wrapper function that sets up the Toplevel and other objects.  Wrapper
-function names, such as _editor_window', should start with '_'.
+"""Run human tests of Idle's window, dialog, and popup widgets.
+
+run(*tests) Create a master Tk() htest window.  Within that, run each
+callable in tests after finding the matching test spec in this file.  If
+tests is empty, run an htest for each spec dict in this file after
+finding the matching callable in the module named in the spec.  Close
+the master window to end testing.
+
+In a tested module, let X be a global name bound to a callable (class or
+function) whose .__name__ attribute is also X (the usual situation). The
+first parameter of X must be 'parent' or 'master'.  When called, the
+first argument will be the root window.  X must create a child
+Toplevel(parent/master) (or subclass thereof).  The Toplevel may be a
+test widget or dialog, in which case the callable is the corresponding
+class.  Or the Toplevel may contain the widget to be tested or set up a
+context in which a test widget is invoked.  In this latter case, the
+callable is a wrapper function that sets up the Toplevel and other
+objects.  Wrapper function names, such as _editor_window', should start
+with '_' and be lowercase.
 
 
 End the module with
 
 if __name__ == '__main__':
-    <unittest, if there is one>
+    <run unittest.main with 'exit=False'>
     from idlelib.idle_test.htest import run
-    run(X)
+    run(callable)  # There could be multiple comma-separated callables.
 
-To have wrapper functions and test invocation code ignored by coveragepy
-reports, put '# htest #' on the def statement header line.
-
-def _wrapper(parent):  # htest #
-
-Also make sure that the 'if __name__' line matches the above.  Then have
-make sure that .coveragerc includes the following.
+To have wrapper functions ignored by coverage reports, tag the def
+header like so: "def _wrapper(parent):  # htest #".  Use the same tag
+for htest lines in widget code.  Make sure that the 'if __name__' line
+matches the above.  Then have make sure that .coveragerc includes the
+following:
 
 [report]
 exclude_lines =
@@ -46,7 +44,7 @@ def _wrapper(parent):  # htest #
 following template, with X.__name__ prepended to '_spec'.
 When all tests are run, the prefix is use to get X.
 
-_spec = {
+callable_spec = {
     'file': '',
     'kwds': {'title': ''},
     'msg': ""
@@ -54,16 +52,16 @@ def _wrapper(parent):  # htest #
 
 file (no .py): run() imports file.py.
 kwds: augmented with {'parent':root} and passed to X as **kwds.
-title: an example kwd; some widgets need this, delete if not.
+title: an example kwd; some widgets need this, delete line if not.
 msg: master window hints about testing the widget.
 
 
-Modules and classes not being tested at the moment:
-pyshell.PyShellEditorWindow
-debugger.Debugger
-autocomplete_w.AutoCompleteWindow
-outwin.OutputWindow (indirectly being tested with grep test)
-'''
+TODO test these modules and classes:
+  autocomplete_w.AutoCompleteWindow
+  debugger.Debugger
+  outwin.OutputWindow (indirectly being tested with grep test)
+  pyshell.PyShellEditorWindow
+"""
 
 import idlelib.pyshell  # Set Windows DPI awareness before Tk().
 from importlib import import_module
@@ -91,15 +89,6 @@ def _wrapper(parent):  # htest #
            "Force-open-calltip does not work here.\n"
     }
 
-_module_browser_spec = {
-    'file': 'browser',
-    'kwds': {},
-    'msg': "Inspect names of module, class(with superclass if "
-           "applicable), methods and functions.\nToggle nested items.\n"
-           "Double clicking on items prints a traceback for an exception "
-           "that is ignored."
-    }
-
 _color_delegator_spec = {
     'file': 'colorizer',
     'kwds': {},
@@ -109,16 +98,6 @@ def _wrapper(parent):  # htest #
            "The default color scheme is in idlelib/config-highlight.def"
     }
 
-CustomRun_spec = {
-    'file': 'query',
-    'kwds': {'title': 'Customize query.py Run',
-             '_htest': True},
-    'msg': "Enter with <Return> or [Run].  Print valid entry to Shell\n"
-           "Arguments are parsed into a list\n"
-           "Mode is currently restart True or False\n"
-           "Close dialog with valid entry, <Escape>, [Cancel], [X]"
-    }
-
 ConfigDialog_spec = {
     'file': 'configdialog',
     'kwds': {'title': 'ConfigDialogTest',
@@ -135,6 +114,24 @@ def _wrapper(parent):  # htest #
            "changes made have persisted."
     }
 
+CustomRun_spec = {
+    'file': 'query',
+    'kwds': {'title': 'Customize query.py Run',
+             '_htest': True},
+    'msg': "Enter with <Return> or [OK].  Print valid entry to Shell\n"
+           "Arguments are parsed into a list\n"
+           "Mode is currently restart True or False\n"
+           "Close dialog with valid entry, <Escape>, [Cancel], [X]"
+    }
+
+_debug_object_browser_spec = {
+    'file': 'debugobj',
+    'kwds': {},
+    'msg': "Double click on items up to the lowest level.\n"
+           "Attributes of the objects and related information "
+           "will be displayed side-by-side at each level."
+    }
+
 # TODO Improve message
 _dyn_option_menu_spec = {
     'file': 'dynoption',
@@ -152,7 +149,7 @@ def _wrapper(parent):  # htest #
            "Best to close editor first."
     }
 
-GetKeysDialog_spec = {
+GetKeysWindow_spec = {
     'file': 'config_key',
     'kwds': {'title': 'Test keybindings',
              'action': 'find-again',
@@ -173,8 +170,8 @@ def _wrapper(parent):  # htest #
     'msg': "Click the 'Show GrepDialog' button.\n"
            "Test the various 'Find-in-files' functions.\n"
            "The results should be displayed in a new '*Output*' window.\n"
-           "'Right-click'->'Go to file/line' anywhere in the search results "
-           "should open that file \nin a new EditorWindow."
+           "'Right-click'->'Go to file/line' in the search results\n "
+           "should open that file in a new EditorWindow."
     }
 
 HelpSource_spec = {
@@ -190,7 +187,14 @@ def _wrapper(parent):  # htest #
            "Any url ('www...', 'http...') is accepted.\n"
            "Test Browse with and without path, as cannot unittest.\n"
            "[Ok] or <Return> prints valid entry to shell\n"
-           "[Cancel] or <Escape> prints None to shell"
+           "<Escape>, [Cancel], or [X] prints None to shell"
+    }
+
+_helpwindow_spec = {
+    'file': 'help',
+    'kwds': {},
+    'msg': "If the help text displays, this works.\n"
+           "Text is selectable. Window is scrollable."
     }
 
 _io_binding_spec = {
@@ -206,56 +210,36 @@ def _wrapper(parent):  # htest #
            "Check that changes were saved by opening the file elsewhere."
     }
 
-_linenumbers_drag_scrolling_spec = {
-    'file': 'sidebar',
+_multi_call_spec = {
+    'file': 'multicall',
     'kwds': {},
-    'msg': textwrap.dedent("""\
-        1. Click on the line numbers and drag down below the edge of the
-        window, moving the mouse a bit and then leaving it there for a while.
-        The text and line numbers should gradually scroll down, with the
-        selection updated continuously.
-
-        2. With the lines still selected, click on a line number above the
-        selected lines. Only the line whose number was clicked should be
-        selected.
-
-        3. Repeat step #1, dragging to above the window. The text and line
-        numbers should gradually scroll up, with the selection updated
-        continuously.
-
-        4. Repeat step #2, clicking a line number below the selection."""),
+    'msg': "The following should trigger a print to console or IDLE Shell.\n"
+           "Entering and leaving the text area, key entry, <Control-Key>,\n"
+           "<Alt-Key-a>, <Control-Key-a>, <Alt-Control-Key-a>, \n"
+           "<Control-Button-1>, <Alt-Button-1> and focusing elsewhere."
     }
 
-_multi_call_spec = {
-    'file': 'multicall',
+_module_browser_spec = {
+    'file': 'browser',
     'kwds': {},
-    'msg': "The following actions should trigger a print to console or IDLE"
-           " Shell.\nEntering and leaving the text area, key entry, "
-           "<Control-Key>,\n<Alt-Key-a>, <Control-Key-a>, "
-           "<Alt-Control-Key-a>, \n<Control-Button-1>, <Alt-Button-1> and "
-           "focusing out of the window\nare sequences to be tested."
+    'msg': textwrap.dedent("""
+        "Inspect names of module, class(with superclass if applicable),
+        "methods and functions.  Toggle nested items.  Double clicking
+        "on items prints a traceback for an exception that is ignored.""")
     }
 
 _multistatus_bar_spec = {
     'file': 'statusbar',
     'kwds': {},
     'msg': "Ensure presence of multi-status bar below text area.\n"
-           "Click 'Update Status' to change the multi-status text"
-    }
-
-_object_browser_spec = {
-    'file': 'debugobj',
-    'kwds': {},
-    'msg': "Double click on items up to the lowest level.\n"
-           "Attributes of the objects and related information "
-           "will be displayed side-by-side at each level."
+           "Click 'Update Status' to change the status text"
     }
 
-_path_browser_spec = {
+PathBrowser_spec = {
     'file': 'pathbrowser',
-    'kwds': {},
+    'kwds': {'_htest': True},
     'msg': "Test for correct display of all paths in sys.path.\n"
-           "Toggle nested items up to the lowest level.\n"
+           "Toggle nested items out to the lowest level.\n"
            "Double clicking on an item prints a traceback\n"
            "for an exception that is ignored."
     }
@@ -291,6 +275,15 @@ def _wrapper(parent):  # htest #
            "Click [Close] or [X] to close the 'Replace Dialog'."
     }
 
+_scrolled_list_spec = {
+    'file': 'scrolledlist',
+    'kwds': {},
+    'msg': "You should see a scrollable list of items\n"
+           "Selecting (clicking) or double clicking an item "
+           "prints the name to the console or Idle shell.\n"
+           "Right clicking an item will display a popup."
+    }
+
 _search_dialog_spec = {
     'file': 'search',
     'kwds': {},
@@ -306,28 +299,31 @@ def _wrapper(parent):  # htest #
            "Its only action is to close."
     }
 
-_scrolled_list_spec = {
-    'file': 'scrolledlist',
+_sidebar_number_scrolling_spec = {
+    'file': 'sidebar',
     'kwds': {},
-    'msg': "You should see a scrollable list of items\n"
-           "Selecting (clicking) or double clicking an item "
-           "prints the name to the console or Idle shell.\n"
-           "Right clicking an item will display a popup."
-    }
+    'msg': textwrap.dedent("""\
+        1. Click on the line numbers and drag down below the edge of the
+        window, moving the mouse a bit and then leaving it there for a
+        while. The text and line numbers should gradually scroll down,
+        with the selection updated continuously.
 
-show_idlehelp_spec = {
-    'file': 'help',
-    'kwds': {},
-    'msg': "If the help text displays, this works.\n"
-           "Text is selectable. Window is scrollable."
+        2. With the lines still selected, click on a line number above
+        or below the selected lines. Only the line whose number was
+        clicked should be selected.
+
+        3. Repeat step #1, dragging to above the window. The text and
+        line numbers should gradually scroll up, with the selection
+        updated continuously.
+
+        4. Repeat step #2, clicking a line number below the selection."""),
     }
 
-_stack_viewer_spec = {
+_stackbrowser_spec = {
     'file': 'stackviewer',
     'kwds': {},
     'msg': "A stacktrace for a NameError exception.\n"
-           "Expand 'idlelib ...' and '<locals>'.\n"
-           "Check that exc_value, exc_tb, and exc_type are correct.\n"
+           "Should have NameError and 1 traceback line."
     }
 
 _tooltip_spec = {
@@ -370,11 +366,12 @@ def _wrapper(parent):  # htest #
     }
 
 def run(*tests):
+    "Run callables in tests."
     root = tk.Tk()
     root.title('IDLE htest')
     root.resizable(0, 0)
 
-    # a scrollable Label like constant width text widget.
+    # A scrollable Label-like constant width text widget.
     frameLabel = tk.Frame(root, padx=10)
     frameLabel.pack()
     text = tk.Text(frameLabel, wrap='word')
@@ -384,45 +381,44 @@ def run(*tests):
     scrollbar.pack(side='right', fill='y', expand=False)
     text.pack(side='left', fill='both', expand=True)
 
-    test_list = [] # List of tuples of the form (spec, callable widget)
+    test_list = [] # Make list of (spec, callable) tuples.
     if tests:
         for test in tests:
             test_spec = globals()[test.__name__ + '_spec']
             test_spec['name'] = test.__name__
             test_list.append((test_spec,  test))
     else:
-        for k, d in globals().items():
-            if k.endswith('_spec'):
-                test_name = k[:-5]
-                test_spec = d
+        for key, dic in globals().items():
+            if key.endswith('_spec'):
+                test_name = key[:-5]
+                test_spec = dic
                 test_spec['name'] = test_name
                 mod = import_module('idlelib.' + test_spec['file'])
                 test = getattr(mod, test_name)
                 test_list.append((test_spec, test))
+    test_list.reverse()  # So can pop in proper order in next_test.
 
     test_name = tk.StringVar(root)
     callable_object = None
     test_kwds = None
 
     def next_test():
-
         nonlocal test_name, callable_object, test_kwds
         if len(test_list) == 1:
             next_button.pack_forget()
         test_spec, callable_object = test_list.pop()
         test_kwds = test_spec['kwds']
-        test_kwds['parent'] = root
         test_name.set('Test ' + test_spec['name'])
 
-        text.configure(state='normal') # enable text editing
-        text.delete('1.0','end')
-        text.insert("1.0",test_spec['msg'])
-        text.configure(state='disabled') # preserve read-only property
+        text['state'] = 'normal'  # Enable text replacement.
+        text.delete('1.0', 'end')
+        text.insert("1.0", test_spec['msg'])
+        text['state'] = 'disabled'  # Restore read-only property.
 
     def run_test(_=None):
-        widget = callable_object(**test_kwds)
+        widget = callable_object(root, **test_kwds)
         try:
-            print(widget.result)
+            print(widget.result)  # Only true for query classes(?).
         except AttributeError:
             pass
 
@@ -441,5 +437,6 @@ def close(_=None):
     next_test()
     root.mainloop()
 
+
 if __name__ == '__main__':
     run()
diff --git a/Lib/idlelib/idle_test/test_config.py b/Lib/idlelib/idle_test/test_config.py
index 08ed76fe288294..6d75cf7aa67dcc 100644
--- a/Lib/idlelib/idle_test/test_config.py
+++ b/Lib/idlelib/idle_test/test_config.py
@@ -85,8 +85,8 @@ def test_load_nothing(self):
         self.assertEqual(parser.sections(), [])
 
     def test_load_file(self):
-        # Borrow test/cfgparser.1 from test_configparser.
-        config_path = findfile('cfgparser.1')
+        # Borrow test/configdata/cfgparser.1 from test_configparser.
+        config_path = findfile('cfgparser.1', subdir='configdata')
         parser = config.IdleConfParser(config_path)
         parser.Load()
 
@@ -274,8 +274,8 @@ def test_create_config_handlers(self):
                 conf.CreateConfigHandlers()
 
         # Check keys are equal
-        self.assertCountEqual(conf.defaultCfg.keys(), conf.config_types)
-        self.assertCountEqual(conf.userCfg.keys(), conf.config_types)
+        self.assertCountEqual(conf.defaultCfg, conf.config_types)
+        self.assertCountEqual(conf.userCfg, conf.config_types)
 
         # Check conf parser are correct type
         for default_parser in conf.defaultCfg.values():
@@ -294,8 +294,8 @@ def test_create_config_handlers(self):
     def test_load_cfg_files(self):
         conf = self.new_config(_utest=True)
 
-        # Borrow test/cfgparser.1 from test_configparser.
-        config_path = findfile('cfgparser.1')
+        # Borrow test/configdata/cfgparser.1 from test_configparser.
+        config_path = findfile('cfgparser.1', subdir='configdata')
         conf.defaultCfg['foo'] = config.IdleConfParser(config_path)
         conf.userCfg['foo'] = config.IdleUserConfParser(config_path)
 
diff --git a/Lib/idlelib/idle_test/test_configdialog.py b/Lib/idlelib/idle_test/test_configdialog.py
index e5d5b4013fca57..6f8518a9bb19d0 100644
--- a/Lib/idlelib/idle_test/test_configdialog.py
+++ b/Lib/idlelib/idle_test/test_configdialog.py
@@ -430,7 +430,7 @@ def test_highlight_target_text_mouse(self):
 
         def tag_to_element(elem):
             for element, tag in d.theme_elements.items():
-                elem[tag[0]] = element
+                elem[tag] = element
 
         def click_it(start):
             x, y, dx, dy = hs.bbox(start)
diff --git a/Lib/idlelib/idle_test/test_debugger.py b/Lib/idlelib/idle_test/test_debugger.py
index 35efb3411c73b5..d1c9638dd5d711 100644
--- a/Lib/idlelib/idle_test/test_debugger.py
+++ b/Lib/idlelib/idle_test/test_debugger.py
@@ -1,16 +1,286 @@
-"Test debugger, coverage 19%"
+"""Test debugger, coverage 66%
+
+Try to make tests pass with draft bdbx, which may replace bdb in 3.13+.
+"""
 
 from idlelib import debugger
-import unittest
-from test.support import requires
-requires('gui')
+from collections import namedtuple
+from textwrap import dedent
 from tkinter import Tk
 
+from test.support import requires
+import unittest
+from unittest import mock
+from unittest.mock import Mock, patch
+
+"""A test python script for the debug tests."""
+TEST_CODE = dedent("""
+    i = 1
+    i += 2
+    if i == 3:
+       print(i)
+    """)
+
+
+class MockFrame:
+    "Minimal mock frame."
+
+    def __init__(self, code, lineno):
+        self.f_code = code
+        self.f_lineno = lineno
+
+
+class IdbTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.gui = Mock()
+        cls.idb = debugger.Idb(cls.gui)
+
+        # Create test and code objects to simulate a debug session.
+        code_obj = compile(TEST_CODE, 'idlelib/file.py', mode='exec')
+        frame1 = MockFrame(code_obj, 1)
+        frame1.f_back = None
+        frame2 = MockFrame(code_obj, 2)
+        frame2.f_back = frame1
+        cls.frame = frame2
+        cls.msg = 'file.py:2: <module>()'
+
+    def test_init(self):
+        self.assertIs(self.idb.gui, self.gui)
+        # Won't test super call since two Bdbs are very different.
+
+    def test_user_line(self):
+        # Test that .user_line() creates a string message for a frame.
+        self.gui.interaction = Mock()
+        self.idb.user_line(self.frame)
+        self.gui.interaction.assert_called_once_with(self.msg, self.frame)
+
+    def test_user_exception(self):
+        # Test that .user_exception() creates a string message for a frame.
+        exc_info = (type(ValueError), ValueError(), None)
+        self.gui.interaction = Mock()
+        self.idb.user_exception(self.frame, exc_info)
+        self.gui.interaction.assert_called_once_with(
+                self.msg, self.frame, exc_info)
+
+
+class FunctionTest(unittest.TestCase):
+    # Test module functions together.
+
+    def test_functions(self):
+        rpc_obj = compile(TEST_CODE,'rpc.py', mode='exec')
+        rpc_frame = MockFrame(rpc_obj, 2)
+        rpc_frame.f_back = rpc_frame
+        self.assertTrue(debugger._in_rpc_code(rpc_frame))
+        self.assertEqual(debugger._frame2message(rpc_frame),
+                         'rpc.py:2: <module>()')
+
+        code_obj = compile(TEST_CODE, 'idlelib/debugger.py', mode='exec')
+        code_frame = MockFrame(code_obj, 1)
+        code_frame.f_back = None
+        self.assertFalse(debugger._in_rpc_code(code_frame))
+        self.assertEqual(debugger._frame2message(code_frame),
+                         'debugger.py:1: <module>()')
+
+        code_frame.f_back = code_frame
+        self.assertFalse(debugger._in_rpc_code(code_frame))
+        code_frame.f_back = rpc_frame
+        self.assertTrue(debugger._in_rpc_code(code_frame))
+
+
+class DebuggerTest(unittest.TestCase):
+    "Tests for Debugger that do not need a real root."
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pyshell = Mock()
+        cls.pyshell.root = Mock()
+        cls.idb = Mock()
+        with patch.object(debugger.Debugger, 'make_gui'):
+            cls.debugger = debugger.Debugger(cls.pyshell, cls.idb)
+        cls.debugger.root = Mock()
+
+    def test_cont(self):
+        self.debugger.cont()
+        self.idb.set_continue.assert_called_once()
+
+    def test_step(self):
+        self.debugger.step()
+        self.idb.set_step.assert_called_once()
+
+    def test_quit(self):
+        self.debugger.quit()
+        self.idb.set_quit.assert_called_once()
+
+    def test_next(self):
+        with patch.object(self.debugger, 'frame') as frame:
+            self.debugger.next()
+            self.idb.set_next.assert_called_once_with(frame)
+
+    def test_ret(self):
+        with patch.object(self.debugger, 'frame') as frame:
+            self.debugger.ret()
+            self.idb.set_return.assert_called_once_with(frame)
+
+    def test_clear_breakpoint(self):
+        self.debugger.clear_breakpoint('test.py', 4)
+        self.idb.clear_break.assert_called_once_with('test.py', 4)
+
+    def test_clear_file_breaks(self):
+        self.debugger.clear_file_breaks('test.py')
+        self.idb.clear_all_file_breaks.assert_called_once_with('test.py')
+
+    def test_set_load_breakpoints(self):
+        # Test the .load_breakpoints() method calls idb.
+        FileIO = namedtuple('FileIO', 'filename')
+
+        class MockEditWindow(object):
+            def __init__(self, fn, breakpoints):
+                self.io = FileIO(fn)
+                self.breakpoints = breakpoints
+
+        self.pyshell.flist = Mock()
+        self.pyshell.flist.inversedict = (
+            MockEditWindow('test1.py', [4, 4]),
+            MockEditWindow('test2.py', [13, 44, 45]),
+        )
+        self.debugger.set_breakpoint('test0.py', 1)
+        self.idb.set_break.assert_called_once_with('test0.py', 1)
+        self.debugger.load_breakpoints()  # Call set_breakpoint 5 times.
+        self.idb.set_break.assert_has_calls(
+            [mock.call('test0.py', 1),
+             mock.call('test1.py', 4),
+             mock.call('test1.py', 4),
+             mock.call('test2.py', 13),
+             mock.call('test2.py', 44),
+             mock.call('test2.py', 45)])
+
+    def test_sync_source_line(self):
+        # Test that .sync_source_line() will set the flist.gotofileline with fixed frame.
+        test_code = compile(TEST_CODE, 'test_sync.py', 'exec')
+        test_frame = MockFrame(test_code, 1)
+        self.debugger.frame = test_frame
+
+        self.debugger.flist = Mock()
+        with patch('idlelib.debugger.os.path.exists', return_value=True):
+            self.debugger.sync_source_line()
+        self.debugger.flist.gotofileline.assert_called_once_with('test_sync.py', 1)
+
+
+class DebuggerGuiTest(unittest.TestCase):
+    """Tests for debugger.Debugger that need tk root.
+
+    close needs debugger.top set in make_gui.
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        requires('gui')
+        cls.root = root = Tk()
+        root.withdraw()
+        cls.pyshell = Mock()
+        cls.pyshell.root = root
+        cls.idb = Mock()
+# stack tests fail with debugger here.
+##        cls.debugger = debugger.Debugger(cls.pyshell, cls.idb)
+##        cls.debugger.root = root
+##        # real root needed for real make_gui
+##        # run, interacting, abort_loop
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.root.destroy()
+        del cls.root
+
+    def setUp(self):
+        self.debugger = debugger.Debugger(self.pyshell, self.idb)
+        self.debugger.root = self.root
+        # real root needed for real make_gui
+        # run, interacting, abort_loop
+
+    def test_run_debugger(self):
+        self.debugger.run(1, 'two')
+        self.idb.run.assert_called_once_with(1, 'two')
+        self.assertEqual(self.debugger.interacting, 0)
+
+    def test_close(self):
+        # Test closing the window in an idle state.
+        self.debugger.close()
+        self.pyshell.close_debugger.assert_called_once()
+
+    def test_show_stack(self):
+        self.debugger.show_stack()
+        self.assertEqual(self.debugger.stackviewer.gui, self.debugger)
+
+    def test_show_stack_with_frame(self):
+        test_frame = MockFrame(None, None)
+        self.debugger.frame = test_frame
+
+        # Reset the stackviewer to force it to be recreated.
+        self.debugger.stackviewer = None
+        self.idb.get_stack.return_value = ([], 0)
+        self.debugger.show_stack()
+
+        # Check that the newly created stackviewer has the test gui as a field.
+        self.assertEqual(self.debugger.stackviewer.gui, self.debugger)
+        self.idb.get_stack.assert_called_once_with(test_frame, None)
+
+
+class StackViewerTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        requires('gui')
+        cls.root = Tk()
+        cls.root.withdraw()
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.root.destroy()
+        del cls.root
+
+    def setUp(self):
+        self.code = compile(TEST_CODE, 'test_stackviewer.py', 'exec')
+        self.stack = [
+            (MockFrame(self.code, 1), 1),
+            (MockFrame(self.code, 2), 2)
+        ]
+        # Create a stackviewer and load the test stack.
+        self.sv = debugger.StackViewer(self.root, None, None)
+        self.sv.load_stack(self.stack)
+
+    def test_init(self):
+        # Test creation of StackViewer.
+        gui = None
+        flist = None
+        master_window = self.root
+        sv = debugger.StackViewer(master_window, flist, gui)
+        self.assertTrue(hasattr(sv, 'stack'))
+
+    def test_load_stack(self):
+        # Test the .load_stack() method against a fixed test stack.
+        # Check the test stack is assigned and the list contains the repr of them.
+        self.assertEqual(self.sv.stack, self.stack)
+        self.assertTrue('?.<module>(), line 1:' in self.sv.get(0))
+        self.assertEqual(self.sv.get(1), '?.<module>(), line 2: ')
+
+    def test_show_source(self):
+        # Test the .show_source() method against a fixed test stack.
+        # Patch out the file list to monitor it
+        self.sv.flist = Mock()
+        # Patch out isfile to pretend file exists.
+        with patch('idlelib.debugger.os.path.isfile', return_value=True) as isfile:
+            self.sv.show_source(1)
+            isfile.assert_called_once_with('test_stackviewer.py')
+            self.sv.flist.open.assert_called_once_with('test_stackviewer.py')
+
 
 class NameSpaceTest(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
+        requires('gui')
         cls.root = Tk()
         cls.root.withdraw()
 
@@ -23,7 +293,5 @@ def test_init(self):
         debugger.NamespaceViewer(self.root, 'Test')
 
 
-# Other classes are Idb, Debugger, and StackViewer.
-
 if __name__ == '__main__':
     unittest.main(verbosity=2)
diff --git a/Lib/idlelib/idle_test/test_debugobj.py b/Lib/idlelib/idle_test/test_debugobj.py
index 131ce22b8bb69b..90ace4e1bc4f9e 100644
--- a/Lib/idlelib/idle_test/test_debugobj.py
+++ b/Lib/idlelib/idle_test/test_debugobj.py
@@ -37,7 +37,7 @@ def test_isexpandable(self):
 
     def test_keys(self):
         ti = debugobj.SequenceTreeItem('label', 'abc')
-        self.assertEqual(list(ti.keys()), [0, 1, 2])
+        self.assertEqual(list(ti.keys()), [0, 1, 2])  # keys() is a range.
 
 
 class DictTreeItemTest(unittest.TestCase):
@@ -50,7 +50,7 @@ def test_isexpandable(self):
 
     def test_keys(self):
         ti = debugobj.DictTreeItem('label', {1:1, 0:0, 2:2})
-        self.assertEqual(ti.keys(), [0, 1, 2])
+        self.assertEqual(ti.keys(), [0, 1, 2])  # keys() is a sorted list.
 
 
 if __name__ == '__main__':
diff --git a/Lib/idlelib/idle_test/test_editor.py b/Lib/idlelib/idle_test/test_editor.py
index fdb47abf43fb77..9296a6d235fbbe 100644
--- a/Lib/idlelib/idle_test/test_editor.py
+++ b/Lib/idlelib/idle_test/test_editor.py
@@ -1,10 +1,10 @@
-"Test editor, coverage 35%."
+"Test editor, coverage 53%."
 
 from idlelib import editor
 import unittest
 from collections import namedtuple
 from test.support import requires
-from tkinter import Tk
+from tkinter import Tk, Text
 
 Editor = editor.EditorWindow
 
@@ -31,7 +31,7 @@ def test_init(self):
         e._close()
 
 
-class TestGetLineIndent(unittest.TestCase):
+class GetLineIndentTest(unittest.TestCase):
     def test_empty_lines(self):
         for tabwidth in [1, 2, 4, 6, 8]:
             for line in ['', '\n']:
@@ -181,6 +181,36 @@ def test_indent_and_newline_event(self):
         eq(get('1.0', 'end'), '  def f1(self, a,\n         \n    return a + b\n')
 
 
+class IndentSearcherTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        requires('gui')
+        cls.root = Tk()
+        cls.root.withdraw()
+        cls.text = Text(cls.root)
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.root.destroy()
+        del cls.root
+
+    def test_searcher(self):
+        text = self.text
+        searcher = (self.text)
+        test_info = (# text, (block, indent))
+                     ("", (None, None)),
+                     ("[1,", (None, None)),  # TokenError
+                     ("if 1:\n", ('if 1:\n', None)),
+                     ("if 1:\n  2\n  3\n", ('if 1:\n', '  2\n')),
+                     )
+        for code, expected_pair in test_info:
+            with self.subTest(code=code):
+                insert(text, code)
+                actual_pair = editor.IndentSearcher(text).run()
+                self.assertEqual(actual_pair, expected_pair)
+
+
 class RMenuTest(unittest.TestCase):
 
     @classmethod
diff --git a/Lib/idlelib/idle_test/test_help_about.py b/Lib/idlelib/idle_test/test_help_about.py
index b915535acac0cc..8b79487b15d4cd 100644
--- a/Lib/idlelib/idle_test/test_help_about.py
+++ b/Lib/idlelib/idle_test/test_help_about.py
@@ -36,7 +36,7 @@ def tearDownClass(cls):
         del cls.root
 
     def test_build_bits(self):
-        self.assertIn(help_about.build_bits(), ('32', '64'))
+        self.assertIn(help_about.bits, ('32', '64'))
 
     def test_dialog_title(self):
         """Test about dialog title"""
@@ -107,7 +107,7 @@ def test_dialog_title(self):
         """Test about dialog title"""
         self.assertEqual(self.dialog.title(),
                          f'About IDLE {python_version()}'
-                         f' ({help_about.build_bits()} bit)')
+                         f' ({help_about.bits} bit)')
 
 
 class CloseTest(unittest.TestCase):
diff --git a/Lib/idlelib/idle_test/test_iomenu.py b/Lib/idlelib/idle_test/test_iomenu.py
index 2fb836dba21672..e0642cf0cabef0 100644
--- a/Lib/idlelib/idle_test/test_iomenu.py
+++ b/Lib/idlelib/idle_test/test_iomenu.py
@@ -8,6 +8,12 @@
 from idlelib import util
 from idlelib.idle_test.mock_idle import Func
 
+# Fail if either tokenize.open and t.detect_encoding does not exist.
+# These are used in loadfile and encode.
+# Also used in pyshell.MI.execfile and runscript.tabnanny.
+from tokenize import open, detect_encoding
+# Remove when we have proper tests that use both.
+
 
 class IOBindingTest(unittest.TestCase):
 
diff --git a/Lib/idlelib/idle_test/test_stackviewer.py b/Lib/idlelib/idle_test/test_stackviewer.py
index 98f53f9537bb25..55f510382bf4c3 100644
--- a/Lib/idlelib/idle_test/test_stackviewer.py
+++ b/Lib/idlelib/idle_test/test_stackviewer.py
@@ -6,19 +6,12 @@
 from tkinter import Tk
 
 from idlelib.tree import TreeNode, ScrolledCanvas
-import sys
 
 
 class StackBrowserTest(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
-        svs = stackviewer.sys
-        try:
-            abc
-        except NameError:
-            svs.last_type, svs.last_value, svs.last_traceback = (
-                sys.exc_info())
 
         requires('gui')
         cls.root = Tk()
@@ -26,8 +19,6 @@ def setUpClass(cls):
 
     @classmethod
     def tearDownClass(cls):
-        svs = stackviewer.sys
-        del svs.last_traceback, svs.last_type, svs.last_value
 
         cls.root.update_idletasks()
 ##        for id in cls.root.tk.call('after', 'info'):
@@ -36,7 +27,10 @@ def tearDownClass(cls):
         del cls.root
 
     def test_init(self):
-        sb = stackviewer.StackBrowser(self.root)
+        try:
+            abc
+        except NameError as exc:
+            sb = stackviewer.StackBrowser(self.root, exc)
         isi = self.assertIsInstance
         isi(stackviewer.sc, ScrolledCanvas)
         isi(stackviewer.item, stackviewer.StackTreeItem)
diff --git a/Lib/idlelib/iomenu.py b/Lib/idlelib/iomenu.py
index af8159c2b33f51..667623ec71ac98 100644
--- a/Lib/idlelib/iomenu.py
+++ b/Lib/idlelib/iomenu.py
@@ -393,13 +393,15 @@ def updaterecentfileslist(self,filename):
         if self.editwin.flist:
             self.editwin.update_recent_files_list(filename)
 
+
 def _io_binding(parent):  # htest #
     from tkinter import Toplevel, Text
 
-    root = Toplevel(parent)
-    root.title("Test IOBinding")
+    top = Toplevel(parent)
+    top.title("Test IOBinding")
     x, y = map(int, parent.geometry().split('+')[1:])
-    root.geometry("+%d+%d" % (x, y + 175))
+    top.geometry("+%d+%d" % (x, y + 175))
+
     class MyEditWin:
         def __init__(self, text):
             self.text = text
@@ -423,12 +425,13 @@ def saveas(self, event):
         def savecopy(self, event):
             self.text.event_generate("<<save-copy-of-window-as-file>>")
 
-    text = Text(root)
+    text = Text(top)
     text.pack()
     text.focus_set()
     editwin = MyEditWin(text)
     IOBinding(editwin)
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_iomenu', verbosity=2, exit=False)
diff --git a/Lib/idlelib/multicall.py b/Lib/idlelib/multicall.py
index 0200f445cc9340..41f81813113062 100644
--- a/Lib/idlelib/multicall.py
+++ b/Lib/idlelib/multicall.py
@@ -421,6 +421,8 @@ def _multi_call(parent):  # htest #
     top.geometry("+%d+%d" % (x, y + 175))
     text = MultiCallCreator(tkinter.Text)(top)
     text.pack()
+    text.focus_set()
+
     def bindseq(seq, n=[0]):
         def handler(event):
             print(seq)
@@ -440,6 +442,7 @@ def handler(event):
     bindseq("<Enter>")
     bindseq("<Leave>")
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_mainmenu', verbosity=2, exit=False)
diff --git a/Lib/idlelib/outwin.py b/Lib/idlelib/outwin.py
index 610031e26f1dff..5ed3f35a7af655 100644
--- a/Lib/idlelib/outwin.py
+++ b/Lib/idlelib/outwin.py
@@ -182,6 +182,7 @@ def setup(self):
         text.tag_raise('sel')
         self.write = self.owin.write
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_outwin', verbosity=2, exit=False)
diff --git a/Lib/idlelib/pathbrowser.py b/Lib/idlelib/pathbrowser.py
index 6de242d0000bed..48a77875ba5801 100644
--- a/Lib/idlelib/pathbrowser.py
+++ b/Lib/idlelib/pathbrowser.py
@@ -99,13 +99,9 @@ def listmodules(self, allnames):
         return sorted
 
 
-def _path_browser(parent):  # htest #
-    PathBrowser(parent, _htest=True)
-    parent.mainloop()
-
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_pathbrowser', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
-    run(_path_browser)
+    run(PathBrowser)
diff --git a/Lib/idlelib/percolator.py b/Lib/idlelib/percolator.py
index 1fe34d29f54eb2..aa73427c4915c8 100644
--- a/Lib/idlelib/percolator.py
+++ b/Lib/idlelib/percolator.py
@@ -86,11 +86,11 @@ def delete(self, *args):
             print(self.name, ": delete", args)
             self.delegate.delete(*args)
 
-    box = tk.Toplevel(parent)
-    box.title("Test Percolator")
+    top = tk.Toplevel(parent)
+    top.title("Test Percolator")
     x, y = map(int, parent.geometry().split('+')[1:])
-    box.geometry("+%d+%d" % (x, y + 175))
-    text = tk.Text(box)
+    top.geometry("+%d+%d" % (x, y + 175))
+    text = tk.Text(top)
     p = Percolator(text)
     pin = p.insertfilter
     pout = p.removefilter
@@ -103,13 +103,15 @@ def toggle2():
         (pin if var2.get() else pout)(t2)
 
     text.pack()
+    text.focus_set()
     var1 = tk.IntVar(parent)
-    cb1 = tk.Checkbutton(box, text="Tracer1", command=toggle1, variable=var1)
+    cb1 = tk.Checkbutton(top, text="Tracer1", command=toggle1, variable=var1)
     cb1.pack()
     var2 = tk.IntVar(parent)
-    cb2 = tk.Checkbutton(box, text="Tracer2", command=toggle2, variable=var2)
+    cb2 = tk.Checkbutton(top, text="Tracer2", command=toggle2, variable=var2)
     cb2.pack()
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_percolator', verbosity=2, exit=False)
diff --git a/Lib/idlelib/pyshell.py b/Lib/idlelib/pyshell.py
index bdde156166171b..1524fccd5d20f8 100755
--- a/Lib/idlelib/pyshell.py
+++ b/Lib/idlelib/pyshell.py
@@ -133,8 +133,8 @@ class PyShellEditorWindow(EditorWindow):
     def __init__(self, *args):
         self.breakpoints = []
         EditorWindow.__init__(self, *args)
-        self.text.bind("<<set-breakpoint-here>>", self.set_breakpoint_here)
-        self.text.bind("<<clear-breakpoint-here>>", self.clear_breakpoint_here)
+        self.text.bind("<<set-breakpoint>>", self.set_breakpoint_event)
+        self.text.bind("<<clear-breakpoint>>", self.clear_breakpoint_event)
         self.text.bind("<<open-python-shell>>", self.flist.open_shell)
 
         #TODO: don't read/write this from/to .idlerc when testing
@@ -155,8 +155,8 @@ def filename_changed_hook(old_hook=self.io.filename_change_hook,
         ("Copy", "<<copy>>", "rmenu_check_copy"),
         ("Paste", "<<paste>>", "rmenu_check_paste"),
         (None, None, None),
-        ("Set Breakpoint", "<<set-breakpoint-here>>", None),
-        ("Clear Breakpoint", "<<clear-breakpoint-here>>", None)
+        ("Set Breakpoint", "<<set-breakpoint>>", None),
+        ("Clear Breakpoint", "<<clear-breakpoint>>", None)
     ]
 
     def color_breakpoint_text(self, color=True):
@@ -181,11 +181,11 @@ def set_breakpoint(self, lineno):
             self.breakpoints.append(lineno)
         try:    # update the subprocess debugger
             debug = self.flist.pyshell.interp.debugger
-            debug.set_breakpoint_here(filename, lineno)
+            debug.set_breakpoint(filename, lineno)
         except: # but debugger may not be active right now....
             pass
 
-    def set_breakpoint_here(self, event=None):
+    def set_breakpoint_event(self, event=None):
         text = self.text
         filename = self.io.filename
         if not filename:
@@ -194,7 +194,7 @@ def set_breakpoint_here(self, event=None):
         lineno = int(float(text.index("insert")))
         self.set_breakpoint(lineno)
 
-    def clear_breakpoint_here(self, event=None):
+    def clear_breakpoint_event(self, event=None):
         text = self.text
         filename = self.io.filename
         if not filename:
@@ -209,7 +209,7 @@ def clear_breakpoint_here(self, event=None):
                         "insert lineend +1char")
         try:
             debug = self.flist.pyshell.interp.debugger
-            debug.clear_breakpoint_here(filename, lineno)
+            debug.clear_breakpoint(filename, lineno)
         except:
             pass
 
@@ -747,10 +747,11 @@ def showtraceback(self):
             self.tkconsole.open_stack_viewer()
 
     def checklinecache(self):
-        c = linecache.cache
-        for key in list(c.keys()):
+        "Remove keys other than '<pyshell#n>'."
+        cache = linecache.cache
+        for key in list(cache):  # Iterate list because mutate cache.
             if key[:1] + key[-1:] != "<>":
-                del c[key]
+                del cache[key]
 
     def runcommand(self, code):
         "Run the code without invoking the debugger"
@@ -1363,19 +1364,19 @@ def runit(self):
                 self.text.tag_remove(self.user_input_insert_tags, index_before)
             self.shell_sidebar.update_sidebar()
 
-    def open_stack_viewer(self, event=None):
+    def open_stack_viewer(self, event=None):  # -n mode only
         if self.interp.rpcclt:
             return self.interp.remote_stack_viewer()
+
+        from idlelib.stackviewer import StackBrowser
         try:
-            sys.last_traceback
+            StackBrowser(self.root, sys.last_exc, self.flist)
         except:
             messagebox.showerror("No stack trace",
                 "There is no stack trace yet.\n"
-                "(sys.last_traceback is not defined)",
+                "(sys.last_exc is not defined)",
                 parent=self.text)
-            return
-        from idlelib.stackviewer import StackBrowser
-        StackBrowser(self.root, self.flist)
+        return None
 
     def view_restart_mark(self, event=None):
         self.text.see("iomark")
@@ -1693,6 +1694,7 @@ def main():
     root.destroy()
     capture_warnings(False)
 
+
 if __name__ == "__main__":
     main()
 
diff --git a/Lib/idlelib/query.py b/Lib/idlelib/query.py
index df02f2123ab02f..57230e2aaca66d 100644
--- a/Lib/idlelib/query.py
+++ b/Lib/idlelib/query.py
@@ -368,7 +368,7 @@ def create_extra(self):
                              sticky='we')
 
     def cli_args_ok(self):
-        "Validity check and parsing for command line arguments."
+        "Return command line arg list or None if error."
         cli_string = self.entry.get().strip()
         try:
             cli_args = shlex.split(cli_string, posix=True)
diff --git a/Lib/idlelib/redirector.py b/Lib/idlelib/redirector.py
index 4928340e98df68..08728956abd900 100644
--- a/Lib/idlelib/redirector.py
+++ b/Lib/idlelib/redirector.py
@@ -164,6 +164,7 @@ def my_insert(*args):
         original_insert(*args)
     original_insert = redir.register("insert", my_insert)
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_redirector', verbosity=2, exit=False)
diff --git a/Lib/idlelib/replace.py b/Lib/idlelib/replace.py
index ca83173877ad1d..a29ca591427491 100644
--- a/Lib/idlelib/replace.py
+++ b/Lib/idlelib/replace.py
@@ -299,6 +299,7 @@ def show_replace():
     button = Button(frame, text="Replace", command=show_replace)
     button.pack()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_replace', verbosity=2, exit=False)
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 84792a82b0022c..53e80a9b42801f 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -140,11 +140,12 @@ def main(del_exitfunc=False):
 
     capture_warnings(True)
     sys.argv[:] = [""]
-    sockthread = threading.Thread(target=manage_socket,
-                                  name='SockThread',
-                                  args=((LOCALHOST, port),))
-    sockthread.daemon = True
-    sockthread.start()
+    threading.Thread(target=manage_socket,
+                     name='SockThread',
+                     args=((LOCALHOST, port),),
+                     daemon=True,
+                    ).start()
+
     while True:
         try:
             if exit_now:
@@ -622,7 +623,7 @@ def get_the_completion_list(self, what, mode):
 
     def stackviewer(self, flist_oid=None):
         if self.user_exc_info:
-            typ, val, tb = self.user_exc_info
+            _, exc, tb = self.user_exc_info
         else:
             return None
         flist = None
@@ -630,9 +631,8 @@ def stackviewer(self, flist_oid=None):
             flist = self.rpchandler.get_remote_proxy(flist_oid)
         while tb and tb.tb_frame.f_globals["__name__"] in ["rpc", "run"]:
             tb = tb.tb_next
-        sys.last_type = typ
-        sys.last_value = val
-        item = stackviewer.StackTreeItem(flist, tb)
+        exc.__traceback__ = tb
+        item = stackviewer.StackTreeItem(exc, flist)
         return debugobj_r.remote_object_tree_item(item)
 
 
diff --git a/Lib/idlelib/scrolledlist.py b/Lib/idlelib/scrolledlist.py
index 71fd18ab19ec8a..4fb418db326255 100644
--- a/Lib/idlelib/scrolledlist.py
+++ b/Lib/idlelib/scrolledlist.py
@@ -132,6 +132,7 @@ def _scrolled_list(parent):  # htest #
     top = Toplevel(parent)
     x, y = map(int, parent.geometry().split('+')[1:])
     top.geometry("+%d+%d" % (x+200, y + 175))
+
     class MyScrolledList(ScrolledList):
         def fill_menu(self): self.menu.add_command(label="right click")
         def on_select(self, index): print("select", self.get(index))
@@ -141,9 +142,10 @@ def on_double(self, index): print("double", self.get(index))
     for i in range(30):
         scrolled_list.append("Item %02d" % i)
 
+
 if __name__ == '__main__':
     from unittest import main
-    main('idlelib.idle_test.test_scrolledlist', verbosity=2,)
+    main('idlelib.idle_test.test_scrolledlist', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
     run(_scrolled_list)
diff --git a/Lib/idlelib/search.py b/Lib/idlelib/search.py
index b35f3b59c3d2e8..935a4832257fa4 100644
--- a/Lib/idlelib/search.py
+++ b/Lib/idlelib/search.py
@@ -156,6 +156,7 @@ def show_find():
     button = Button(frame, text="Search (selection ignored)", command=show_find)
     button.pack()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_search', verbosity=2, exit=False)
diff --git a/Lib/idlelib/sidebar.py b/Lib/idlelib/sidebar.py
index fb1084dbf3f18b..ff77b568a786e0 100644
--- a/Lib/idlelib/sidebar.py
+++ b/Lib/idlelib/sidebar.py
@@ -25,10 +25,9 @@ def get_end_linenumber(text):
 
 def get_displaylines(text, index):
     """Display height, in lines, of a logical line in a Tk text widget."""
-    res = text.count(f"{index} linestart",
-                     f"{index} lineend",
-                     "displaylines")
-    return res[0] if res else 0
+    return text.count(f"{index} linestart",
+                      f"{index} lineend",
+                      "displaylines")
 
 def get_widget_padding(widget):
     """Get the total padding of a Tk widget, including its border."""
@@ -514,16 +513,16 @@ def update_colors(self):
         self.change_callback()
 
 
-def _linenumbers_drag_scrolling(parent):  # htest #
+def _sidebar_number_scrolling(parent):  # htest #
     from idlelib.idle_test.test_sidebar import Dummy_editwin
 
-    toplevel = tk.Toplevel(parent)
-    text_frame = tk.Frame(toplevel)
+    top = tk.Toplevel(parent)
+    text_frame = tk.Frame(top)
     text_frame.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
     text_frame.rowconfigure(1, weight=1)
     text_frame.columnconfigure(1, weight=1)
 
-    font = idleConf.GetFont(toplevel, 'main', 'EditorWindow')
+    font = idleConf.GetFont(top, 'main', 'EditorWindow')
     text = tk.Text(text_frame, width=80, height=24, wrap=tk.NONE, font=font)
     text.grid(row=1, column=1, sticky=tk.NSEW)
 
@@ -541,4 +540,4 @@ def _linenumbers_drag_scrolling(parent):  # htest #
     main('idlelib.idle_test.test_sidebar', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
-    run(_linenumbers_drag_scrolling)
+    run(_sidebar_number_scrolling)
diff --git a/Lib/idlelib/stackviewer.py b/Lib/idlelib/stackviewer.py
index 94ffb4eff4dd26..977c56ef15f2ae 100644
--- a/Lib/idlelib/stackviewer.py
+++ b/Lib/idlelib/stackviewer.py
@@ -1,33 +1,32 @@
+# Rename to stackbrowser or possibly consolidate with browser.
+
 import linecache
 import os
-import sys
 
 import tkinter as tk
 
 from idlelib.debugobj import ObjectTreeItem, make_objecttreeitem
 from idlelib.tree import TreeNode, TreeItem, ScrolledCanvas
 
-def StackBrowser(root, flist=None, tb=None, top=None):
+def StackBrowser(root, exc, flist=None, top=None):
     global sc, item, node  # For testing.
     if top is None:
         top = tk.Toplevel(root)
     sc = ScrolledCanvas(top, bg="white", highlightthickness=0)
     sc.frame.pack(expand=1, fill="both")
-    item = StackTreeItem(flist, tb)
+    item = StackTreeItem(exc, flist)
     node = TreeNode(sc.canvas, None, item)
     node.expand()
 
 
 class StackTreeItem(TreeItem):
 
-    def __init__(self, flist=None, tb=None):
+    def __init__(self, exc, flist=None):
         self.flist = flist
-        self.stack = self.get_stack(tb)
-        self.text = self.get_exception()
+        self.stack = self.get_stack(None if exc is None else exc.__traceback__)
+        self.text = f"{type(exc).__name__}: {str(exc)}"
 
     def get_stack(self, tb):
-        if tb is None:
-            tb = sys.last_traceback
         stack = []
         if tb and tb.tb_frame is None:
             tb = tb.tb_next
@@ -36,17 +35,7 @@ def get_stack(self, tb):
             tb = tb.tb_next
         return stack
 
-    def get_exception(self):
-        type = sys.last_type
-        value = sys.last_value
-        if hasattr(type, "__name__"):
-            type = type.__name__
-        s = str(type)
-        if value is not None:
-            s = s + ": " + str(value)
-        return s
-
-    def GetText(self):
+    def GetText(self):  # Titlecase names are overrides.
         return self.text
 
     def GetSubList(self):
@@ -112,7 +101,7 @@ def IsExpandable(self):
 
     def GetSubList(self):
         sublist = []
-        for key in self.object.keys():
+        for key in self.object.keys():  # self.object not necessarily dict.
             try:
                 value = self.object[key]
             except KeyError:
@@ -124,7 +113,7 @@ def setfunction(value, key=key, object=self.object):
         return sublist
 
 
-def _stack_viewer(parent):  # htest #
+def _stackbrowser(parent):  # htest #
     from idlelib.pyshell import PyShellFileList
     top = tk.Toplevel(parent)
     top.title("Test StackViewer")
@@ -133,23 +122,13 @@ def _stack_viewer(parent):  # htest #
     flist = PyShellFileList(top)
     try: # to obtain a traceback object
         intentional_name_error
-    except NameError:
-        exc_type, exc_value, exc_tb = sys.exc_info()
-    # inject stack trace to sys
-    sys.last_type = exc_type
-    sys.last_value = exc_value
-    sys.last_traceback = exc_tb
-
-    StackBrowser(top, flist=flist, top=top, tb=exc_tb)
+    except NameError as e:
+        StackBrowser(top, e, flist=flist, top=top)
 
-    # restore sys to original state
-    del sys.last_type
-    del sys.last_value
-    del sys.last_traceback
 
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_stackviewer', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
-    run(_stack_viewer)
+    run(_stackbrowser)
diff --git a/Lib/idlelib/statusbar.py b/Lib/idlelib/statusbar.py
index 755fafb0ac6438..8445d4cc8dfdb9 100644
--- a/Lib/idlelib/statusbar.py
+++ b/Lib/idlelib/statusbar.py
@@ -26,6 +26,7 @@ def _multistatus_bar(parent):  # htest #
     x, y = map(int, parent.geometry().split('+')[1:])
     top.geometry("+%d+%d" %(x, y + 175))
     top.title("Test multistatus bar")
+
     frame = Frame(top)
     text = Text(frame, height=5, width=40)
     text.pack()
@@ -42,6 +43,7 @@ def change():
     button.pack(side='bottom')
     frame.pack()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_statusbar', verbosity=2, exit=False)
diff --git a/Lib/idlelib/tree.py b/Lib/idlelib/tree.py
index 5f30f0f6092bfa..9c2eb47b24aec9 100644
--- a/Lib/idlelib/tree.py
+++ b/Lib/idlelib/tree.py
@@ -492,6 +492,7 @@ def _tree_widget(parent):  # htest #
     node = TreeNode(sc.canvas, None, item)
     node.expand()
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_tree', verbosity=2, exit=False)
diff --git a/Lib/idlelib/undo.py b/Lib/idlelib/undo.py
index 5f10c0f05c1acb..f52446d5fcdcf8 100644
--- a/Lib/idlelib/undo.py
+++ b/Lib/idlelib/undo.py
@@ -339,25 +339,26 @@ def bump_depth(self, incr=1):
 def _undo_delegator(parent):  # htest #
     from tkinter import Toplevel, Text, Button
     from idlelib.percolator import Percolator
-    undowin = Toplevel(parent)
-    undowin.title("Test UndoDelegator")
+    top = Toplevel(parent)
+    top.title("Test UndoDelegator")
     x, y = map(int, parent.geometry().split('+')[1:])
-    undowin.geometry("+%d+%d" % (x, y + 175))
+    top.geometry("+%d+%d" % (x, y + 175))
 
-    text = Text(undowin, height=10)
+    text = Text(top, height=10)
     text.pack()
     text.focus_set()
     p = Percolator(text)
     d = UndoDelegator()
     p.insertfilter(d)
 
-    undo = Button(undowin, text="Undo", command=lambda:d.undo_event(None))
+    undo = Button(top, text="Undo", command=lambda:d.undo_event(None))
     undo.pack(side='left')
-    redo = Button(undowin, text="Redo", command=lambda:d.redo_event(None))
+    redo = Button(top, text="Redo", command=lambda:d.redo_event(None))
     redo.pack(side='left')
-    dump = Button(undowin, text="Dump", command=lambda:d.dump_event(None))
+    dump = Button(top, text="Dump", command=lambda:d.dump_event(None))
     dump.pack(side='left')
 
+
 if __name__ == "__main__":
     from unittest import main
     main('idlelib.idle_test.test_undo', verbosity=2, exit=False)
diff --git a/Lib/idlelib/util.py b/Lib/idlelib/util.py
index ede670a4db5536..5ac69a7b94cb56 100644
--- a/Lib/idlelib/util.py
+++ b/Lib/idlelib/util.py
@@ -16,6 +16,7 @@
 # .pyw is for Windows; .pyi is for stub files.
 py_extensions = ('.py', '.pyw', '.pyi')  # Order needed for open/save dialogs.
 
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_util', verbosity=2)
diff --git a/Lib/imghdr.py b/Lib/imghdr.py
deleted file mode 100644
index 33868883470764..00000000000000
--- a/Lib/imghdr.py
+++ /dev/null
@@ -1,180 +0,0 @@
-"""Recognize image file formats based on their first few bytes."""
-
-from os import PathLike
-import warnings
-
-__all__ = ["what"]
-
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-
-#-------------------------#
-# Recognize image headers #
-#-------------------------#
-
-def what(file, h=None):
-    """Return the type of image contained in a file or byte stream."""
-    f = None
-    try:
-        if h is None:
-            if isinstance(file, (str, PathLike)):
-                f = open(file, 'rb')
-                h = f.read(32)
-            else:
-                location = file.tell()
-                h = file.read(32)
-                file.seek(location)
-        for tf in tests:
-            res = tf(h, f)
-            if res:
-                return res
-    finally:
-        if f: f.close()
-    return None
-
-
-#---------------------------------#
-# Subroutines per image file type #
-#---------------------------------#
-
-tests = []
-
-def test_jpeg(h, f):
-    """Test for JPEG data with JFIF or Exif markers; and raw JPEG."""
-    if h[6:10] in (b'JFIF', b'Exif'):
-        return 'jpeg'
-    elif h[:4] == b'\xff\xd8\xff\xdb':
-        return 'jpeg'
-
-tests.append(test_jpeg)
-
-def test_png(h, f):
-    """Verify if the image is a PNG."""
-    if h.startswith(b'\211PNG\r\n\032\n'):
-        return 'png'
-
-tests.append(test_png)
-
-def test_gif(h, f):
-    """Verify if the image is a GIF ('87 or '89 variants)."""
-    if h[:6] in (b'GIF87a', b'GIF89a'):
-        return 'gif'
-
-tests.append(test_gif)
-
-def test_tiff(h, f):
-    """Verify if the image is a TIFF (can be in Motorola or Intel byte order)."""
-    if h[:2] in (b'MM', b'II'):
-        return 'tiff'
-
-tests.append(test_tiff)
-
-def test_rgb(h, f):
-    """test for the SGI image library."""
-    if h.startswith(b'\001\332'):
-        return 'rgb'
-
-tests.append(test_rgb)
-
-def test_pbm(h, f):
-    """Verify if the image is a PBM (portable bitmap)."""
-    if len(h) >= 3 and \
-        h[0] == ord(b'P') and h[1] in b'14' and h[2] in b' \t\n\r':
-        return 'pbm'
-
-tests.append(test_pbm)
-
-def test_pgm(h, f):
-    """Verify if the image is a PGM (portable graymap)."""
-    if len(h) >= 3 and \
-        h[0] == ord(b'P') and h[1] in b'25' and h[2] in b' \t\n\r':
-        return 'pgm'
-
-tests.append(test_pgm)
-
-def test_ppm(h, f):
-    """Verify if the image is a PPM (portable pixmap)."""
-    if len(h) >= 3 and \
-        h[0] == ord(b'P') and h[1] in b'36' and h[2] in b' \t\n\r':
-        return 'ppm'
-
-tests.append(test_ppm)
-
-def test_rast(h, f):
-    """test for the Sun raster file."""
-    if h.startswith(b'\x59\xA6\x6A\x95'):
-        return 'rast'
-
-tests.append(test_rast)
-
-def test_xbm(h, f):
-    """Verify if the image is a X bitmap (X10 or X11)."""
-    if h.startswith(b'#define '):
-        return 'xbm'
-
-tests.append(test_xbm)
-
-def test_bmp(h, f):
-    """Verify if the image is a BMP file."""
-    if h.startswith(b'BM'):
-        return 'bmp'
-
-tests.append(test_bmp)
-
-def test_webp(h, f):
-    """Verify if the image is a WebP."""
-    if h.startswith(b'RIFF') and h[8:12] == b'WEBP':
-        return 'webp'
-
-tests.append(test_webp)
-
-def test_exr(h, f):
-    """verify is the image ia a OpenEXR fileOpenEXR."""
-    if h.startswith(b'\x76\x2f\x31\x01'):
-        return 'exr'
-
-tests.append(test_exr)
-
-#--------------------#
-# Small test program #
-#--------------------#
-
-def test():
-    import sys
-    recursive = 0
-    if sys.argv[1:] and sys.argv[1] == '-r':
-        del sys.argv[1:2]
-        recursive = 1
-    try:
-        if sys.argv[1:]:
-            testall(sys.argv[1:], recursive, 1)
-        else:
-            testall(['.'], recursive, 1)
-    except KeyboardInterrupt:
-        sys.stderr.write('\n[Interrupted]\n')
-        sys.exit(1)
-
-def testall(list, recursive, toplevel):
-    import sys
-    import os
-    for filename in list:
-        if os.path.isdir(filename):
-            print(filename + '/:', end=' ')
-            if recursive or toplevel:
-                print('recursing down:')
-                import glob
-                names = glob.glob(os.path.join(glob.escape(filename), '*'))
-                testall(names, recursive, 0)
-            else:
-                print('*** directory (use -r) ***')
-        else:
-            print(filename + ':', end=' ')
-            sys.stdout.flush()
-            try:
-                print(what(filename))
-            except OSError:
-                print('*** not found ***')
-
-if __name__ == '__main__':
-    test()
diff --git a/Lib/importlib/__init__.py b/Lib/importlib/__init__.py
index 707c081cb2c5b6..f38fe5c1ab461a 100644
--- a/Lib/importlib/__init__.py
+++ b/Lib/importlib/__init__.py
@@ -54,8 +54,6 @@
 # Fully bootstrapped at this point, import whatever you like, circular
 # dependencies and startup overhead minimisation permitting :)
 
-import warnings
-
 
 # Public API #########################################################
 
diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index c48fd506a0e4eb..d942045f3de666 100644
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -51,18 +51,106 @@ def _new_module(name):
 
 # Module-level locking ########################################################
 
-# A dict mapping module names to weakrefs of _ModuleLock instances
-# Dictionary protected by the global import lock
+# For a list that can have a weakref to it.
+class _List(list):
+    pass
+
+
+# Copied from weakref.py with some simplifications and modifications unique to
+# bootstrapping importlib. Many methods were simply deleting for simplicity, so if they
+# are needed in the future they may work if simply copied back in.
+class _WeakValueDictionary:
+
+    def __init__(self):
+        self_weakref = _weakref.ref(self)
+
+        # Inlined to avoid issues with inheriting from _weakref.ref before _weakref is
+        # set by _setup(). Since there's only one instance of this class, this is
+        # not expensive.
+        class KeyedRef(_weakref.ref):
+
+            __slots__ = "key",
+
+            def __new__(type, ob, key):
+                self = super().__new__(type, ob, type.remove)
+                self.key = key
+                return self
+
+            def __init__(self, ob, key):
+                super().__init__(ob, self.remove)
+
+            @staticmethod
+            def remove(wr):
+                nonlocal self_weakref
+
+                self = self_weakref()
+                if self is not None:
+                    if self._iterating:
+                        self._pending_removals.append(wr.key)
+                    else:
+                        _weakref._remove_dead_weakref(self.data, wr.key)
+
+        self._KeyedRef = KeyedRef
+        self.clear()
+
+    def clear(self):
+        self._pending_removals = []
+        self._iterating = set()
+        self.data = {}
+
+    def _commit_removals(self):
+        pop = self._pending_removals.pop
+        d = self.data
+        while True:
+            try:
+                key = pop()
+            except IndexError:
+                return
+            _weakref._remove_dead_weakref(d, key)
+
+    def get(self, key, default=None):
+        if self._pending_removals:
+            self._commit_removals()
+        try:
+            wr = self.data[key]
+        except KeyError:
+            return default
+        else:
+            if (o := wr()) is None:
+                return default
+            else:
+                return o
+
+    def setdefault(self, key, default=None):
+        try:
+            o = self.data[key]()
+        except KeyError:
+            o = None
+        if o is None:
+            if self._pending_removals:
+                self._commit_removals()
+            self.data[key] = self._KeyedRef(default, key)
+            return default
+        else:
+            return o
+
+
+# A dict mapping module names to weakrefs of _ModuleLock instances.
+# Dictionary protected by the global import lock.
 _module_locks = {}
 
-# A dict mapping thread IDs to lists of _ModuleLock instances.  This maps a
-# thread to the module locks it is blocking on acquiring.  The values are
-# lists because a single thread could perform a re-entrant import and be "in
-# the process" of blocking on locks for more than one module.  A thread can
-# be "in the process" because a thread cannot actually block on acquiring
-# more than one lock but it can have set up bookkeeping that reflects that
-# it intends to block on acquiring more than one lock.
-_blocking_on = {}
+# A dict mapping thread IDs to weakref'ed lists of _ModuleLock instances.
+# This maps a thread to the module locks it is blocking on acquiring.  The
+# values are lists because a single thread could perform a re-entrant import
+# and be "in the process" of blocking on locks for more than one module.  A
+# thread can be "in the process" because a thread cannot actually block on
+# acquiring more than one lock but it can have set up bookkeeping that reflects
+# that it intends to block on acquiring more than one lock.
+#
+# The dictionary uses a WeakValueDictionary to avoid keeping unnecessary
+# lists around, regardless of GC runs. This way there's no memory leak if
+# the list is no longer needed (GH-106176).
+_blocking_on = None
 
 
 class _BlockingOnManager:
@@ -79,7 +167,7 @@ def __enter__(self):
         # re-entrant (i.e., a single thread may take it more than once) so it
         # wouldn't help us be correct in the face of re-entrancy either.
 
-        self.blocked_on = _blocking_on.setdefault(self.thread_id, [])
+        self.blocked_on = _blocking_on.setdefault(self.thread_id, _List())
         self.blocked_on.append(self.lock)
 
     def __exit__(self, *args, **kwargs):
@@ -736,10 +824,16 @@ def _module_repr_from_spec(spec):
     """Return the repr to use for the module."""
     name = '?' if spec.name is None else spec.name
     if spec.origin is None:
-        if spec.loader is None:
+        loader = spec.loader
+        if loader is None:
             return f'<module {name!r}>'
+        elif (
+            _bootstrap_external is not None
+            and isinstance(loader, _bootstrap_external.NamespaceLoader)
+        ):
+            return f'<module {name!r} (namespace) from {list(loader._path)}>'
         else:
-            return f'<module {name!r} (namespace) from {list(spec.loader._path)}>'
+            return f'<module {name!r} ({loader!r})>'
     else:
         if spec.has_location:
             return f'<module {name!r} from {spec.origin!r}>'
@@ -1409,7 +1503,7 @@ def _setup(sys_module, _imp_module):
     modules, those two modules must be explicitly passed in.
 
     """
-    global _imp, sys
+    global _imp, sys, _blocking_on
     _imp = _imp_module
     sys = sys_module
 
@@ -1437,6 +1531,9 @@ def _setup(sys_module, _imp_module):
             builtin_module = sys.modules[builtin_name]
         setattr(self_module, builtin_name, builtin_module)
 
+    # Instantiation requires _weakref to have been set.
+    _blocking_on = _WeakValueDictionary()
+
 
 def _install(sys_module, _imp_module):
     """Install importers for builtin and frozen modules"""
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index 3ca5a1aea28af7..4e96a916324824 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -444,8 +444,25 @@ def _write_atomic(path, data, mode=0o666):
 #     Python 3.12b1 3528 (Add LOAD_SUPER_ATTR_METHOD specialization)
 #     Python 3.12b1 3529 (Inline list/dict/set comprehensions)
 #     Python 3.12b1 3530 (Shrink the LOAD_SUPER_ATTR caches)
-
-#     Python 3.13 will start with 3550
+#     Python 3.12b1 3531 (Add PEP 695 changes)
+#     Python 3.13a1 3550 (Plugin optimizer support)
+#     Python 3.13a1 3551 (Compact superinstructions)
+#     Python 3.13a1 3552 (Remove LOAD_FAST__LOAD_CONST and LOAD_CONST__LOAD_FAST)
+#     Python 3.13a1 3553 (Add SET_FUNCTION_ATTRIBUTE)
+#     Python 3.13a1 3554 (more efficient bytecodes for f-strings)
+#     Python 3.13a1 3555 (generate specialized opcodes metadata from bytecodes.c)
+#     Python 3.13a1 3556 (Convert LOAD_CLOSURE to a pseudo-op)
+#     Python 3.13a1 3557 (Make the conversion to boolean in jumps explicit)
+#     Python 3.13a1 3558 (Reorder the stack items for CALL)
+#     Python 3.13a1 3559 (Generate opcode IDs from bytecodes.c)
+#     Python 3.13a1 3560 (Add RESUME_CHECK instruction)
+#     Python 3.13a1 3561 (Add cache entry to branch instructions)
+#     Python 3.13a1 3562 (Assign opcode IDs for internal ops in separate range)
+#     Python 3.13a1 3563 (Add CALL_KW and remove KW_NAMES)
+#     Python 3.13a1 3564 (Removed oparg from YIELD_VALUE, changed oparg values of RESUME)
+#     Python 3.13a1 3565 (Oparg of YIELD_VALUE indicates whether it is in a yield-from)
+
+#     Python 3.14 will start with 3600
 
 #     Please don't copy-paste the same pre-release tag for new entries above!!!
 #     You should always use the *upcoming* tag. For example, if 3.12a6 came out
@@ -460,7 +477,7 @@ def _write_atomic(path, data, mode=0o666):
 # Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
 # in PC/launcher.c must also be updated.
 
-MAGIC_NUMBER = (3530).to_bytes(2, 'little') + b'\r\n'
+MAGIC_NUMBER = (3565).to_bytes(2, 'little') + b'\r\n'
 
 _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little')  # For import.c
 
diff --git a/Lib/importlib/metadata/__init__.py b/Lib/importlib/metadata/__init__.py
index 82e0ce1b281c54..5c09666b6a40d9 100644
--- a/Lib/importlib/metadata/__init__.py
+++ b/Lib/importlib/metadata/__init__.py
@@ -12,7 +12,6 @@
 import functools
 import itertools
 import posixpath
-import contextlib
 import collections
 import inspect
 
diff --git a/Lib/importlib/resources/__init__.py b/Lib/importlib/resources/__init__.py
index 34e3a9950cc557..e6b60c18caa052 100644
--- a/Lib/importlib/resources/__init__.py
+++ b/Lib/importlib/resources/__init__.py
@@ -6,31 +6,12 @@
     Package,
 )
 
-from ._legacy import (
-    contents,
-    open_binary,
-    read_binary,
-    open_text,
-    read_text,
-    is_resource,
-    path,
-    Resource,
-)
-
 from .abc import ResourceReader
 
 
 __all__ = [
     'Package',
-    'Resource',
     'ResourceReader',
     'as_file',
-    'contents',
     'files',
-    'is_resource',
-    'open_binary',
-    'open_text',
-    'path',
-    'read_binary',
-    'read_text',
 ]
diff --git a/Lib/importlib/resources/_legacy.py b/Lib/importlib/resources/_legacy.py
deleted file mode 100644
index b1ea8105dad6e2..00000000000000
--- a/Lib/importlib/resources/_legacy.py
+++ /dev/null
@@ -1,120 +0,0 @@
-import functools
-import os
-import pathlib
-import types
-import warnings
-
-from typing import Union, Iterable, ContextManager, BinaryIO, TextIO, Any
-
-from . import _common
-
-Package = Union[types.ModuleType, str]
-Resource = str
-
-
-def deprecated(func):
-    @functools.wraps(func)
-    def wrapper(*args, **kwargs):
-        warnings.warn(
-            f"{func.__name__} is deprecated. Use files() instead. "
-            "Refer to https://importlib-resources.readthedocs.io"
-            "/en/latest/using.html#migrating-from-legacy for migration advice.",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        return func(*args, **kwargs)
-
-    return wrapper
-
-
-def normalize_path(path: Any) -> str:
-    """Normalize a path by ensuring it is a string.
-
-    If the resulting string contains path separators, an exception is raised.
-    """
-    str_path = str(path)
-    parent, file_name = os.path.split(str_path)
-    if parent:
-        raise ValueError(f'{path!r} must be only a file name')
-    return file_name
-
-
-@deprecated
-def open_binary(package: Package, resource: Resource) -> BinaryIO:
-    """Return a file-like object opened for binary reading of the resource."""
-    return (_common.files(package) / normalize_path(resource)).open('rb')
-
-
-@deprecated
-def read_binary(package: Package, resource: Resource) -> bytes:
-    """Return the binary contents of the resource."""
-    return (_common.files(package) / normalize_path(resource)).read_bytes()
-
-
-@deprecated
-def open_text(
-    package: Package,
-    resource: Resource,
-    encoding: str = 'utf-8',
-    errors: str = 'strict',
-) -> TextIO:
-    """Return a file-like object opened for text reading of the resource."""
-    return (_common.files(package) / normalize_path(resource)).open(
-        'r', encoding=encoding, errors=errors
-    )
-
-
-@deprecated
-def read_text(
-    package: Package,
-    resource: Resource,
-    encoding: str = 'utf-8',
-    errors: str = 'strict',
-) -> str:
-    """Return the decoded string of the resource.
-
-    The decoding-related arguments have the same semantics as those of
-    bytes.decode().
-    """
-    with open_text(package, resource, encoding, errors) as fp:
-        return fp.read()
-
-
-@deprecated
-def contents(package: Package) -> Iterable[str]:
-    """Return an iterable of entries in `package`.
-
-    Note that not all entries are resources.  Specifically, directories are
-    not considered resources.  Use `is_resource()` on each entry returned here
-    to check if it is a resource or not.
-    """
-    return [path.name for path in _common.files(package).iterdir()]
-
-
-@deprecated
-def is_resource(package: Package, name: str) -> bool:
-    """True if `name` is a resource inside `package`.
-
-    Directories are *not* resources.
-    """
-    resource = normalize_path(name)
-    return any(
-        traversable.name == resource and traversable.is_file()
-        for traversable in _common.files(package).iterdir()
-    )
-
-
-@deprecated
-def path(
-    package: Package,
-    resource: Resource,
-) -> ContextManager[pathlib.Path]:
-    """A context manager providing a file path object to the resource.
-
-    If the resource does not already exist on its own on the file system,
-    a temporary file will be created. If the file was created, the file
-    will be deleted upon exiting the context manager (no exception is
-    raised if the file was deleted prior to the context manager
-    exiting).
-    """
-    return _common.as_file(_common.files(package) / normalize_path(resource))
diff --git a/Lib/importlib/util.py b/Lib/importlib/util.py
index b1d9271f8e47ca..3ad71d31c2f438 100644
--- a/Lib/importlib/util.py
+++ b/Lib/importlib/util.py
@@ -116,24 +116,40 @@ def find_spec(name, package=None):
 # is imported by runpy, which means we want to avoid any unnecessary
 # dependencies.  Thus we use a class.
 
-class allowing_all_extensions:
-    """A context manager that lets users skip the compatibility check.
+class _incompatible_extension_module_restrictions:
+    """A context manager that can temporarily skip the compatibility check.
+
+    NOTE: This function is meant to accommodate an unusual case; one
+    which is likely to eventually go away.  There's is a pretty good
+    chance this is not what you were looking for.
+
+    WARNING: Using this function to disable the check can lead to
+    unexpected behavior and even crashes.  It should only be used during
+    extension module development.
+
+    If "disable_check" is True then the compatibility check will not
+    happen while the context manager is active.  Otherwise the check
+    *will* happen.
 
     Normally, extensions that do not support multiple interpreters
     may not be imported in a subinterpreter.  That implies modules
-    that do not implement multi-phase init.
+    that do not implement multi-phase init or that explicitly of out.
 
-    Likewise for modules import in a subinterpeter with its own GIL
+    Likewise for modules import in a subinterpreter with its own GIL
     when the extension does not support a per-interpreter GIL.  This
     implies the module does not have a Py_mod_multiple_interpreters slot
     set to Py_MOD_PER_INTERPRETER_GIL_SUPPORTED.
 
     In both cases, this context manager may be used to temporarily
     disable the check for compatible extension modules.
+
+    You can get the same effect as this function by implementing the
+    basic interface of multi-phase init (PEP 489) and lying about
+    support for mulitple interpreters (or per-interpreter GIL).
     """
 
-    def __init__(self, disable_check=True):
-        self.disable_check = disable_check
+    def __init__(self, *, disable_check):
+        self.disable_check = bool(disable_check)
 
     def __enter__(self):
         self.old = _imp._override_multi_interp_extensions_check(self.override)
diff --git a/Lib/inspect.py b/Lib/inspect.py
index a64e85e4fd67a4..f0b72662a9a0b2 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -881,29 +881,28 @@ def cleandoc(doc):
 
     Any whitespace that can be uniformly removed from the second line
     onwards is removed."""
-    try:
-        lines = doc.expandtabs().split('\n')
-    except UnicodeError:
-        return None
-    else:
-        # Find minimum indentation of any non-blank lines after first line.
-        margin = sys.maxsize
-        for line in lines[1:]:
-            content = len(line.lstrip())
-            if content:
-                indent = len(line) - content
-                margin = min(margin, indent)
-        # Remove indentation.
-        if lines:
-            lines[0] = lines[0].lstrip()
-        if margin < sys.maxsize:
-            for i in range(1, len(lines)): lines[i] = lines[i][margin:]
-        # Remove any trailing or leading blank lines.
-        while lines and not lines[-1]:
-            lines.pop()
-        while lines and not lines[0]:
-            lines.pop(0)
-        return '\n'.join(lines)
+    lines = doc.expandtabs().split('\n')
+
+    # Find minimum indentation of any non-blank lines after first line.
+    margin = sys.maxsize
+    for line in lines[1:]:
+        content = len(line.lstrip(' '))
+        if content:
+            indent = len(line) - content
+            margin = min(margin, indent)
+    # Remove indentation.
+    if lines:
+        lines[0] = lines[0].lstrip(' ')
+    if margin < sys.maxsize:
+        for i in range(1, len(lines)):
+            lines[i] = lines[i][margin:]
+    # Remove any trailing or leading blank lines.
+    while lines and not lines[-1]:
+        lines.pop()
+    while lines and not lines[0]:
+        lines.pop(0)
+    return '\n'.join(lines)
+
 
 def getfile(object):
     """Work out which source or compiled file an object was defined in."""
@@ -1035,9 +1034,13 @@ class ClassFoundException(Exception):
 
 class _ClassFinder(ast.NodeVisitor):
 
-    def __init__(self, qualname):
+    def __init__(self, cls, tree, lines, qualname):
         self.stack = []
+        self.cls = cls
+        self.tree = tree
+        self.lines = lines
         self.qualname = qualname
+        self.lineno_found = []
 
     def visit_FunctionDef(self, node):
         self.stack.append(node.name)
@@ -1058,11 +1061,49 @@ def visit_ClassDef(self, node):
                 line_number = node.lineno
 
             # decrement by one since lines starts with indexing by zero
-            line_number -= 1
-            raise ClassFoundException(line_number)
+            self.lineno_found.append((line_number - 1, node.end_lineno))
         self.generic_visit(node)
         self.stack.pop()
 
+    def get_lineno(self):
+        self.visit(self.tree)
+        lineno_found_number = len(self.lineno_found)
+        if lineno_found_number == 0:
+            raise OSError('could not find class definition')
+        elif lineno_found_number == 1:
+            return self.lineno_found[0][0]
+        else:
+            # We have multiple candidates for the class definition.
+            # Now we have to guess.
+
+            # First, let's see if there are any method definitions
+            for member in self.cls.__dict__.values():
+                if (isinstance(member, types.FunctionType) and
+                    member.__module__ == self.cls.__module__):
+                    for lineno, end_lineno in self.lineno_found:
+                        if lineno <= member.__code__.co_firstlineno <= end_lineno:
+                            return lineno
+
+            class_strings = [(''.join(self.lines[lineno: end_lineno]), lineno)
+                             for lineno, end_lineno in self.lineno_found]
+
+            # Maybe the class has a docstring and it's unique?
+            if self.cls.__doc__:
+                ret = None
+                for candidate, lineno in class_strings:
+                    if self.cls.__doc__.strip() in candidate:
+                        if ret is None:
+                            ret = lineno
+                        else:
+                            break
+                else:
+                    if ret is not None:
+                        return ret
+
+            # We are out of ideas, just return the last one found, which is
+            # slightly better than previous ones
+            return self.lineno_found[-1][0]
+
 
 def findsource(object):
     """Return the entire source file and starting line number for an object.
@@ -1099,14 +1140,8 @@ def findsource(object):
         qualname = object.__qualname__
         source = ''.join(lines)
         tree = ast.parse(source)
-        class_finder = _ClassFinder(qualname)
-        try:
-            class_finder.visit(tree)
-        except ClassFoundException as e:
-            line_number = e.args[0]
-            return lines, line_number
-        else:
-            raise OSError('could not find class definition')
+        class_finder = _ClassFinder(object, tree, lines, qualname)
+        return lines, class_finder.get_lineno()
 
     if ismethod(object):
         object = object.__func__
@@ -1242,6 +1277,14 @@ def getblock(lines):
             blockfinder.tokeneater(*_token)
     except (EndOfBlock, IndentationError):
         pass
+    except SyntaxError as e:
+        if "unmatched" not in e.msg:
+            raise e from None
+        _, *_token_info = _token
+        try:
+            blockfinder.tokeneater(tokenize.NEWLINE, *_token_info)
+        except (EndOfBlock, IndentationError):
+            pass
     return lines[:blockfinder.last]
 
 def getsourcelines(object):
@@ -1835,8 +1878,10 @@ def getattr_static(obj, attr, default=_sentinel):
     klass_result = _check_class(klass, attr)
 
     if instance_result is not _sentinel and klass_result is not _sentinel:
-        if (_check_class(type(klass_result), '__get__') is not _sentinel and
-            _check_class(type(klass_result), '__set__') is not _sentinel):
+        if _check_class(type(klass_result), "__get__") is not _sentinel and (
+            _check_class(type(klass_result), "__set__") is not _sentinel
+            or _check_class(type(klass_result), "__delete__") is not _sentinel
+        ):
             return klass_result
 
     if instance_result is not _sentinel:
@@ -2185,7 +2230,7 @@ def _signature_strip_non_python_syntax(signature):
             if string == ',':
                 current_parameter += 1
 
-        if (type == ERRORTOKEN) and (string == '$'):
+        if (type == OP) and (string == '$'):
             assert self_parameter is None
             self_parameter = current_parameter
             continue
@@ -2193,7 +2238,7 @@ def _signature_strip_non_python_syntax(signature):
         add(string)
         if (string == ','):
             add(' ')
-    clean_signature = ''.join(text)
+    clean_signature = ''.join(text).strip().replace("\n", "")
     return clean_signature, self_parameter
 
 
@@ -2571,17 +2616,18 @@ def _signature_from_callable(obj, *,
             factory_method = None
             new = _signature_get_user_defined_method(obj, '__new__')
             init = _signature_get_user_defined_method(obj, '__init__')
-            # Now we check if the 'obj' class has an own '__new__' method
-            if '__new__' in obj.__dict__:
-                factory_method = new
-            # or an own '__init__' method
-            elif '__init__' in obj.__dict__:
-                factory_method = init
-            # If not, we take inherited '__new__' or '__init__', if present
-            elif new is not None:
-                factory_method = new
-            elif init is not None:
-                factory_method = init
+
+            # Go through the MRO and see if any class has user-defined
+            # pure Python __new__ or __init__ method
+            for base in obj.__mro__:
+                # Now we check if the 'obj' class has an own '__new__' method
+                if new is not None and '__new__' in base.__dict__:
+                    factory_method = new
+                    break
+                # or an own '__init__' method
+                elif init is not None and '__init__' in base.__dict__:
+                    factory_method = init
+                    break
 
             if factory_method is not None:
                 sig = _get_signature_of(factory_method)
@@ -2824,6 +2870,8 @@ def __str__(self):
 
         return formatted
 
+    __replace__ = replace
+
     def __repr__(self):
         return '<{} "{}">'.format(self.__class__.__name__, self)
 
@@ -3084,6 +3132,8 @@ def replace(self, *, parameters=_void, return_annotation=_void):
         return type(self)(parameters,
                           return_annotation=return_annotation)
 
+    __replace__ = replace
+
     def _hash_basis(self):
         params = tuple(param for param in self.parameters.values()
                              if param.kind != _KEYWORD_ONLY)
@@ -3266,6 +3316,16 @@ def __repr__(self):
         return '<{} {}>'.format(self.__class__.__name__, self)
 
     def __str__(self):
+        return self.format()
+
+    def format(self, *, max_width=None):
+        """Create a string representation of the Signature object.
+
+        If *max_width* integer is passed,
+        signature will try to fit into the *max_width*.
+        If signature is longer than *max_width*,
+        all parameters will be on separate lines.
+        """
         result = []
         render_pos_only_separator = False
         render_kw_only_separator = True
@@ -3303,6 +3363,8 @@ def __str__(self):
             result.append('/')
 
         rendered = '({})'.format(', '.join(result))
+        if max_width is not None and len(rendered) > max_width:
+            rendered = '(\n    {}\n)'.format(',\n    '.join(result))
 
         if self.return_annotation is not _empty:
             anno = formatannotation(self.return_annotation)
diff --git a/Lib/io.py b/Lib/io.py
index 50ce97436ac1d1..f0e2fa15d5abcf 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -45,7 +45,8 @@
            "FileIO", "BytesIO", "StringIO", "BufferedIOBase",
            "BufferedReader", "BufferedWriter", "BufferedRWPair",
            "BufferedRandom", "TextIOBase", "TextIOWrapper",
-           "UnsupportedOperation", "SEEK_SET", "SEEK_CUR", "SEEK_END"]
+           "UnsupportedOperation", "SEEK_SET", "SEEK_CUR", "SEEK_END",
+           "DEFAULT_BUFFER_SIZE", "text_encoding", "IncrementalNewlineDecoder"]
 
 
 import _io
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index af1d5c4800cce8..e398cc138308d9 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -1389,6 +1389,16 @@ def is_link_local(self):
         """
         return self in self._constants._linklocal_network
 
+    @property
+    def ipv6_mapped(self):
+        """Return the IPv4-mapped IPv6 address.
+
+        Returns:
+            The IPv4-mapped IPv6 address per RFC 4291.
+
+        """
+        return IPv6Address(f'::ffff:{self}')
+
 
 class IPv4Interface(IPv4Address):
 
@@ -1923,8 +1933,40 @@ def __init__(self, address):
 
         self._ip = self._ip_int_from_string(addr_str)
 
+    def _explode_shorthand_ip_string(self):
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is None:
+            long_form = super()._explode_shorthand_ip_string()
+        else:
+            prefix_len = 30
+            raw_exploded_str = super()._explode_shorthand_ip_string()
+            long_form = "%s%s" % (raw_exploded_str[:prefix_len], str(ipv4_mapped))
+        return long_form
+
+    def _ipv4_mapped_ipv6_to_str(self):
+        """Return convenient text representation of IPv4-mapped IPv6 address
+
+        See RFC 4291 2.5.5.2, 2.2 p.3 for details.
+
+        Returns:
+            A string, 'x:x:x:x:x:x:d.d.d.d', where the 'x's are the hexadecimal values of
+            the six high-order 16-bit pieces of the address, and the 'd's are
+            the decimal values of the four low-order 8-bit pieces of the
+            address (standard IPv4 representation) as defined in RFC 4291 2.2 p.3.
+
+        """
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is None:
+            raise AddressValueError("Can not apply to non-IPv4-mapped IPv6 address %s" % str(self))
+        high_order_bits = self._ip >> 32
+        return "%s:%s" % (self._string_from_ip_int(high_order_bits), str(ipv4_mapped))
+
     def __str__(self):
-        ip_str = super().__str__()
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is None:
+            ip_str = super().__str__()
+        else:
+            ip_str = self._ipv4_mapped_ipv6_to_str()
         return ip_str + '%' + self._scope_id if self._scope_id else ip_str
 
     def __hash__(self):
@@ -1938,6 +1980,9 @@ def __eq__(self, other):
             return False
         return self._scope_id == getattr(other, '_scope_id', None)
 
+    def __reduce__(self):
+        return (self.__class__, (str(self),))
+
     @property
     def scope_id(self):
         """Identifier of a particular zone of the address's scope.
diff --git a/Lib/json/__init__.py b/Lib/json/__init__.py
index 256e76a0a67f8f..ed2c74771ea87d 100644
--- a/Lib/json/__init__.py
+++ b/Lib/json/__init__.py
@@ -97,7 +97,7 @@
 """
 __version__ = '2.0.9'
 __all__ = [
-    'dump', 'dumps', 'load', 'loads', 'AttrDict',
+    'dump', 'dumps', 'load', 'loads',
     'JSONDecoder', 'JSONDecodeError', 'JSONEncoder',
 ]
 
@@ -357,53 +357,3 @@ def loads(s, *, cls=None, object_hook=None, parse_float=None,
     if parse_constant is not None:
         kw['parse_constant'] = parse_constant
     return cls(**kw).decode(s)
-
-class AttrDict(dict):
-    """Dict like object that supports attribute style dotted access.
-
-    This class is intended for use with the *object_hook* in json.loads():
-
-        >>> from json import loads, AttrDict
-        >>> json_string = '{"mercury": 88, "venus": 225, "earth": 365, "mars": 687}'
-        >>> orbital_period = loads(json_string, object_hook=AttrDict)
-        >>> orbital_period['earth']     # Dict style lookup
-        365
-        >>> orbital_period.earth        # Attribute style lookup
-        365
-        >>> orbital_period.keys()       # All dict methods are present
-        dict_keys(['mercury', 'venus', 'earth', 'mars'])
-
-    Attribute style access only works for keys that are valid attribute names.
-    In contrast, dictionary style access works for all keys.
-    For example, ``d.two words`` contains a space and is not syntactically
-    valid Python, so ``d["two words"]`` should be used instead.
-
-    If a key has the same name as dictionary method, then a dictionary
-    lookup finds the key and an attribute lookup finds the method:
-
-        >>> d = AttrDict(items=50)
-        >>> d['items']                  # Lookup the key
-        50
-        >>> d.items()                   # Call the method
-        dict_items([('items', 50)])
-
-    """
-    __slots__ = ()
-
-    def __getattr__(self, attr):
-        try:
-            return self[attr]
-        except KeyError:
-            raise AttributeError(attr) from None
-
-    def __setattr__(self, attr, value):
-        self[attr] = value
-
-    def __delattr__(self, attr):
-        try:
-            del self[attr]
-        except KeyError:
-            raise AttributeError(attr) from None
-
-    def __dir__(self):
-        return list(self) + dir(type(self))
diff --git a/Lib/keyword.py b/Lib/keyword.py
index cc2b46b7229d53..e22c837835e740 100644
--- a/Lib/keyword.py
+++ b/Lib/keyword.py
@@ -56,7 +56,8 @@
 softkwlist = [
     '_',
     'case',
-    'match'
+    'match',
+    'type'
 ]
 
 iskeyword = frozenset(kwlist).__contains__
diff --git a/Lib/lib2to3/Grammar.txt b/Lib/lib2to3/Grammar.txt
deleted file mode 100644
index fa7b15061d941c..00000000000000
--- a/Lib/lib2to3/Grammar.txt
+++ /dev/null
@@ -1,196 +0,0 @@
-# Grammar for 2to3. This grammar supports Python 2.x and 3.x.
-
-# NOTE WELL: You should also follow all the steps listed at
-# https://devguide.python.org/grammar/
-
-# Start symbols for the grammar:
-#	file_input is a module or sequence of commands read from an input file;
-#	single_input is a single interactive statement;
-#	eval_input is the input for the eval() and input() functions.
-# NB: compound_stmt in single_input is followed by extra NEWLINE!
-file_input: (NEWLINE | stmt)* ENDMARKER
-single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
-eval_input: testlist NEWLINE* ENDMARKER
-
-decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
-decorators: decorator+
-decorated: decorators (classdef | funcdef | async_funcdef)
-async_funcdef: ASYNC funcdef
-funcdef: 'def' NAME parameters ['->' test] ':' suite
-parameters: '(' [typedargslist] ')'
-
-# The following definition for typedarglist is equivalent to this set of rules:
-#
-#     arguments = argument (',' argument)*
-#     argument = tfpdef ['=' test]
-#     kwargs = '**' tname [',']
-#     args = '*' [tname]
-#     kwonly_kwargs = (',' argument)* [',' [kwargs]]
-#     args_kwonly_kwargs = args kwonly_kwargs | kwargs
-#     poskeyword_args_kwonly_kwargs = arguments [',' [args_kwonly_kwargs]]
-#     typedargslist_no_posonly  = poskeyword_args_kwonly_kwargs | args_kwonly_kwargs
-#     typedarglist = arguments ',' '/' [',' [typedargslist_no_posonly]])|(typedargslist_no_posonly)"
-#
-# It needs to be fully expanded to allow our LL(1) parser to work on it.
-
-typedargslist: tfpdef ['=' test] (',' tfpdef ['=' test])* ',' '/' [
-                     ',' [((tfpdef ['=' test] ',')* ('*' [tname] (',' tname ['=' test])*
-                            [',' ['**' tname [',']]] | '**' tname [','])
-                     | tfpdef ['=' test] (',' tfpdef ['=' test])* [','])]
-                ] | ((tfpdef ['=' test] ',')* ('*' [tname] (',' tname ['=' test])*
-                     [',' ['**' tname [',']]] | '**' tname [','])
-                     | tfpdef ['=' test] (',' tfpdef ['=' test])* [','])
-
-tname: NAME [':' test]
-tfpdef: tname | '(' tfplist ')'
-tfplist: tfpdef (',' tfpdef)* [',']
-
-# The following definition for varargslist is equivalent to this set of rules:
-#
-#     arguments = argument (',' argument )*
-#     argument = vfpdef ['=' test]
-#     kwargs = '**' vname [',']
-#     args = '*' [vname]
-#     kwonly_kwargs = (',' argument )* [',' [kwargs]]
-#     args_kwonly_kwargs = args kwonly_kwargs | kwargs
-#     poskeyword_args_kwonly_kwargs = arguments [',' [args_kwonly_kwargs]]
-#     vararglist_no_posonly = poskeyword_args_kwonly_kwargs | args_kwonly_kwargs
-#     varargslist = arguments ',' '/' [','[(vararglist_no_posonly)]] | (vararglist_no_posonly)
-#
-# It needs to be fully expanded to allow our LL(1) parser to work on it.
-
-varargslist: vfpdef ['=' test ](',' vfpdef ['=' test])* ',' '/' [',' [
-                     ((vfpdef ['=' test] ',')* ('*' [vname] (',' vname ['=' test])*
-                            [',' ['**' vname [',']]] | '**' vname [','])
-                            | vfpdef ['=' test] (',' vfpdef ['=' test])* [','])
-                     ]] | ((vfpdef ['=' test] ',')*
-                     ('*' [vname] (',' vname ['=' test])*  [',' ['**' vname [',']]]| '**' vname [','])
-                     | vfpdef ['=' test] (',' vfpdef ['=' test])* [','])
-
-vname: NAME
-vfpdef: vname | '(' vfplist ')'
-vfplist: vfpdef (',' vfpdef)* [',']
-
-stmt: simple_stmt | compound_stmt
-simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE
-small_stmt: (expr_stmt | print_stmt  | del_stmt | pass_stmt | flow_stmt |
-             import_stmt | global_stmt | exec_stmt | assert_stmt)
-expr_stmt: testlist_star_expr (annassign | augassign (yield_expr|testlist) |
-                     ('=' (yield_expr|testlist_star_expr))*)
-annassign: ':' test ['=' test]
-testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
-augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
-            '<<=' | '>>=' | '**=' | '//=')
-# For normal and annotated assignments, additional restrictions enforced by the interpreter
-print_stmt: 'print' ( [ test (',' test)* [','] ] |
-                      '>>' test [ (',' test)+ [','] ] )
-del_stmt: 'del' exprlist
-pass_stmt: 'pass'
-flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | yield_stmt
-break_stmt: 'break'
-continue_stmt: 'continue'
-return_stmt: 'return' [testlist_star_expr]
-yield_stmt: yield_expr
-raise_stmt: 'raise' [test ['from' test | ',' test [',' test]]]
-import_stmt: import_name | import_from
-import_name: 'import' dotted_as_names
-import_from: ('from' ('.'* dotted_name | '.'+)
-              'import' ('*' | '(' import_as_names ')' | import_as_names))
-import_as_name: NAME ['as' NAME]
-dotted_as_name: dotted_name ['as' NAME]
-import_as_names: import_as_name (',' import_as_name)* [',']
-dotted_as_names: dotted_as_name (',' dotted_as_name)*
-dotted_name: NAME ('.' NAME)*
-global_stmt: ('global' | 'nonlocal') NAME (',' NAME)*
-exec_stmt: 'exec' expr ['in' test [',' test]]
-assert_stmt: 'assert' test [',' test]
-
-compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | with_stmt | funcdef | classdef | decorated | async_stmt
-async_stmt: ASYNC (funcdef | with_stmt | for_stmt)
-if_stmt: 'if' namedexpr_test ':' suite ('elif' namedexpr_test ':' suite)* ['else' ':' suite]
-while_stmt: 'while' namedexpr_test ':' suite ['else' ':' suite]
-for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite]
-try_stmt: ('try' ':' suite
-           ((except_clause ':' suite)+
-	    ['else' ':' suite]
-	    ['finally' ':' suite] |
-	   'finally' ':' suite))
-with_stmt: 'with' with_item (',' with_item)*  ':' suite
-with_item: test ['as' expr]
-with_var: 'as' expr
-# NB compile.c makes sure that the default except clause is last
-except_clause: 'except' [test [(',' | 'as') test]]
-suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT
-
-# Backward compatibility cruft to support:
-# [ x for x in lambda: True, lambda: False if x() ]
-# even while also allowing:
-# lambda x: 5 if x else 2
-# (But not a mix of the two)
-testlist_safe: old_test [(',' old_test)+ [',']]
-old_test: or_test | old_lambdef
-old_lambdef: 'lambda' [varargslist] ':' old_test
-
-namedexpr_test: test [':=' test]
-test: or_test ['if' or_test 'else' test] | lambdef
-or_test: and_test ('or' and_test)*
-and_test: not_test ('and' not_test)*
-not_test: 'not' not_test | comparison
-comparison: expr (comp_op expr)*
-comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
-star_expr: '*' expr
-expr: xor_expr ('|' xor_expr)*
-xor_expr: and_expr ('^' and_expr)*
-and_expr: shift_expr ('&' shift_expr)*
-shift_expr: arith_expr (('<<'|'>>') arith_expr)*
-arith_expr: term (('+'|'-') term)*
-term: factor (('*'|'@'|'/'|'%'|'//') factor)*
-factor: ('+'|'-'|'~') factor | power
-power: [AWAIT] atom trailer* ['**' factor]
-atom: ('(' [yield_expr|testlist_gexp] ')' |
-       '[' [listmaker] ']' |
-       '{' [dictsetmaker] '}' |
-       '`' testlist1 '`' |
-       NAME | NUMBER | STRING+ | '.' '.' '.')
-listmaker: (namedexpr_test|star_expr) ( comp_for | (',' (namedexpr_test|star_expr))* [','] )
-testlist_gexp: (namedexpr_test|star_expr) ( comp_for | (',' (namedexpr_test|star_expr))* [','] )
-lambdef: 'lambda' [varargslist] ':' test
-trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME
-subscriptlist: subscript (',' subscript)* [',']
-subscript: test | [test] ':' [test] [sliceop]
-sliceop: ':' [test]
-exprlist: (expr|star_expr) (',' (expr|star_expr))* [',']
-testlist: test (',' test)* [',']
-dictsetmaker: ( ((test ':' test | '**' expr)
-                 (comp_for | (',' (test ':' test | '**' expr))* [','])) |
-                ((test | star_expr)
-		 (comp_for | (',' (test | star_expr))* [','])) )
-
-classdef: 'class' NAME ['(' [arglist] ')'] ':' suite
-
-arglist: argument (',' argument)* [',']
-
-# "test '=' test" is really "keyword '=' test", but we have no such token.
-# These need to be in a single rule to avoid grammar that is ambiguous
-# to our LL(1) parser. Even though 'test' includes '*expr' in star_expr,
-# we explicitly match '*' here, too, to give it proper precedence.
-# Illegal combinations and orderings are blocked in ast.c:
-# multiple (test comp_for) arguments are blocked; keyword unpackings
-# that precede iterable unpackings are blocked; etc.
-argument: ( test [comp_for] |
-            test ':=' test |
-            test '=' test |
-            '**' test |
-	        '*' test )
-
-comp_iter: comp_for | comp_if
-comp_for: [ASYNC] 'for' exprlist 'in' testlist_safe [comp_iter]
-comp_if: 'if' old_test [comp_iter]
-
-testlist1: test (',' test)*
-
-# not used in grammar, but may appear in "node" passed from Parser to Compiler
-encoding_decl: NAME
-
-yield_expr: 'yield' [yield_arg]
-yield_arg: 'from' test | testlist_star_expr
diff --git a/Lib/lib2to3/PatternGrammar.txt b/Lib/lib2to3/PatternGrammar.txt
deleted file mode 100644
index 36bf8148273bd7..00000000000000
--- a/Lib/lib2to3/PatternGrammar.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-# A grammar to describe tree matching patterns.
-# Not shown here:
-# - 'TOKEN' stands for any token (leaf node)
-# - 'any' stands for any node (leaf or interior)
-# With 'any' we can still specify the sub-structure.
-
-# The start symbol is 'Matcher'.
-
-Matcher: Alternatives ENDMARKER
-
-Alternatives: Alternative ('|' Alternative)*
-
-Alternative: (Unit | NegatedUnit)+
-
-Unit: [NAME '='] ( STRING [Repeater]
-                 | NAME [Details] [Repeater]
-                 | '(' Alternatives ')' [Repeater]
-                 | '[' Alternatives ']'
-		 )
-
-NegatedUnit: 'not' (STRING | NAME [Details] | '(' Alternatives ')')
-
-Repeater: '*' | '+' | '{' NUMBER [',' NUMBER] '}'
-
-Details: '<' Alternatives '>'
diff --git a/Lib/lib2to3/__init__.py b/Lib/lib2to3/__init__.py
deleted file mode 100644
index 177405c8090d3e..00000000000000
--- a/Lib/lib2to3/__init__.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import warnings
-
-
-warnings.warn(
-    "lib2to3 package is deprecated and may not be able to parse Python 3.10+",
-    DeprecationWarning,
-    stacklevel=2,
-)
diff --git a/Lib/lib2to3/__main__.py b/Lib/lib2to3/__main__.py
deleted file mode 100644
index 80688baf27abfc..00000000000000
--- a/Lib/lib2to3/__main__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-import sys
-from .main import main
-
-sys.exit(main("lib2to3.fixes"))
diff --git a/Lib/lib2to3/btm_matcher.py b/Lib/lib2to3/btm_matcher.py
deleted file mode 100644
index 3b78868038bda0..00000000000000
--- a/Lib/lib2to3/btm_matcher.py
+++ /dev/null
@@ -1,163 +0,0 @@
-"""A bottom-up tree matching algorithm implementation meant to speed
-up 2to3's matching process. After the tree patterns are reduced to
-their rarest linear path, a linear Aho-Corasick automaton is
-created. The linear automaton traverses the linear paths from the
-leaves to the root of the AST and returns a set of nodes for further
-matching. This reduces significantly the number of candidate nodes."""
-
-__author__ = "George Boutsioukis <gboutsioukis@gmail.com>"
-
-import logging
-import itertools
-from collections import defaultdict
-
-from . import pytree
-from .btm_utils import reduce_tree
-
-class BMNode(object):
-    """Class for a node of the Aho-Corasick automaton used in matching"""
-    count = itertools.count()
-    def __init__(self):
-        self.transition_table = {}
-        self.fixers = []
-        self.id = next(BMNode.count)
-        self.content = ''
-
-class BottomMatcher(object):
-    """The main matcher class. After instantiating the patterns should
-    be added using the add_fixer method"""
-
-    def __init__(self):
-        self.match = set()
-        self.root = BMNode()
-        self.nodes = [self.root]
-        self.fixers = []
-        self.logger = logging.getLogger("RefactoringTool")
-
-    def add_fixer(self, fixer):
-        """Reduces a fixer's pattern tree to a linear path and adds it
-        to the matcher(a common Aho-Corasick automaton). The fixer is
-        appended on the matching states and called when they are
-        reached"""
-        self.fixers.append(fixer)
-        tree = reduce_tree(fixer.pattern_tree)
-        linear = tree.get_linear_subpattern()
-        match_nodes = self.add(linear, start=self.root)
-        for match_node in match_nodes:
-            match_node.fixers.append(fixer)
-
-    def add(self, pattern, start):
-        "Recursively adds a linear pattern to the AC automaton"
-        #print("adding pattern", pattern, "to", start)
-        if not pattern:
-            #print("empty pattern")
-            return [start]
-        if isinstance(pattern[0], tuple):
-            #alternatives
-            #print("alternatives")
-            match_nodes = []
-            for alternative in pattern[0]:
-                #add all alternatives, and add the rest of the pattern
-                #to each end node
-                end_nodes = self.add(alternative, start=start)
-                for end in end_nodes:
-                    match_nodes.extend(self.add(pattern[1:], end))
-            return match_nodes
-        else:
-            #single token
-            #not last
-            if pattern[0] not in start.transition_table:
-                #transition did not exist, create new
-                next_node = BMNode()
-                start.transition_table[pattern[0]] = next_node
-            else:
-                #transition exists already, follow
-                next_node = start.transition_table[pattern[0]]
-
-            if pattern[1:]:
-                end_nodes = self.add(pattern[1:], start=next_node)
-            else:
-                end_nodes = [next_node]
-            return end_nodes
-
-    def run(self, leaves):
-        """The main interface with the bottom matcher. The tree is
-        traversed from the bottom using the constructed
-        automaton. Nodes are only checked once as the tree is
-        retraversed. When the automaton fails, we give it one more
-        shot(in case the above tree matches as a whole with the
-        rejected leaf), then we break for the next leaf. There is the
-        special case of multiple arguments(see code comments) where we
-        recheck the nodes
-
-        Args:
-           The leaves of the AST tree to be matched
-
-        Returns:
-           A dictionary of node matches with fixers as the keys
-        """
-        current_ac_node = self.root
-        results = defaultdict(list)
-        for leaf in leaves:
-            current_ast_node = leaf
-            while current_ast_node:
-                current_ast_node.was_checked = True
-                for child in current_ast_node.children:
-                    # multiple statements, recheck
-                    if isinstance(child, pytree.Leaf) and child.value == ";":
-                        current_ast_node.was_checked = False
-                        break
-                if current_ast_node.type == 1:
-                    #name
-                    node_token = current_ast_node.value
-                else:
-                    node_token = current_ast_node.type
-
-                if node_token in current_ac_node.transition_table:
-                    #token matches
-                    current_ac_node = current_ac_node.transition_table[node_token]
-                    for fixer in current_ac_node.fixers:
-                        results[fixer].append(current_ast_node)
-                else:
-                    #matching failed, reset automaton
-                    current_ac_node = self.root
-                    if (current_ast_node.parent is not None
-                        and current_ast_node.parent.was_checked):
-                        #the rest of the tree upwards has been checked, next leaf
-                        break
-
-                    #recheck the rejected node once from the root
-                    if node_token in current_ac_node.transition_table:
-                        #token matches
-                        current_ac_node = current_ac_node.transition_table[node_token]
-                        for fixer in current_ac_node.fixers:
-                            results[fixer].append(current_ast_node)
-
-                current_ast_node = current_ast_node.parent
-        return results
-
-    def print_ac(self):
-        "Prints a graphviz diagram of the BM automaton(for debugging)"
-        print("digraph g{")
-        def print_node(node):
-            for subnode_key in node.transition_table.keys():
-                subnode = node.transition_table[subnode_key]
-                print("%d -> %d [label=%s] //%s" %
-                      (node.id, subnode.id, type_repr(subnode_key), str(subnode.fixers)))
-                if subnode_key == 1:
-                    print(subnode.content)
-                print_node(subnode)
-        print_node(self.root)
-        print("}")
-
-# taken from pytree.py for debugging; only used by print_ac
-_type_reprs = {}
-def type_repr(type_num):
-    global _type_reprs
-    if not _type_reprs:
-        from .pygram import python_symbols
-        # printing tokens is possible but not as useful
-        # from .pgen2 import token // token.__dict__.items():
-        for name, val in python_symbols.__dict__.items():
-            if type(val) == int: _type_reprs[val] = name
-    return _type_reprs.setdefault(type_num, type_num)
diff --git a/Lib/lib2to3/btm_utils.py b/Lib/lib2to3/btm_utils.py
deleted file mode 100644
index b61afdba693071..00000000000000
--- a/Lib/lib2to3/btm_utils.py
+++ /dev/null
@@ -1,280 +0,0 @@
-"Utility functions used by the btm_matcher module"
-
-from . import pytree
-from .pgen2 import grammar, token
-from .pygram import pattern_symbols, python_symbols
-
-syms = pattern_symbols
-pysyms = python_symbols
-tokens = grammar.opmap
-token_labels = token
-
-TYPE_ANY = -1
-TYPE_ALTERNATIVES = -2
-TYPE_GROUP = -3
-
-class MinNode(object):
-    """This class serves as an intermediate representation of the
-    pattern tree during the conversion to sets of leaf-to-root
-    subpatterns"""
-
-    def __init__(self, type=None, name=None):
-        self.type = type
-        self.name = name
-        self.children = []
-        self.leaf = False
-        self.parent = None
-        self.alternatives = []
-        self.group = []
-
-    def __repr__(self):
-        return str(self.type) + ' ' + str(self.name)
-
-    def leaf_to_root(self):
-        """Internal method. Returns a characteristic path of the
-        pattern tree. This method must be run for all leaves until the
-        linear subpatterns are merged into a single"""
-        node = self
-        subp = []
-        while node:
-            if node.type == TYPE_ALTERNATIVES:
-                node.alternatives.append(subp)
-                if len(node.alternatives) == len(node.children):
-                    #last alternative
-                    subp = [tuple(node.alternatives)]
-                    node.alternatives = []
-                    node = node.parent
-                    continue
-                else:
-                    node = node.parent
-                    subp = None
-                    break
-
-            if node.type == TYPE_GROUP:
-                node.group.append(subp)
-                #probably should check the number of leaves
-                if len(node.group) == len(node.children):
-                    subp = get_characteristic_subpattern(node.group)
-                    node.group = []
-                    node = node.parent
-                    continue
-                else:
-                    node = node.parent
-                    subp = None
-                    break
-
-            if node.type == token_labels.NAME and node.name:
-                #in case of type=name, use the name instead
-                subp.append(node.name)
-            else:
-                subp.append(node.type)
-
-            node = node.parent
-        return subp
-
-    def get_linear_subpattern(self):
-        """Drives the leaf_to_root method. The reason that
-        leaf_to_root must be run multiple times is because we need to
-        reject 'group' matches; for example the alternative form
-        (a | b c) creates a group [b c] that needs to be matched. Since
-        matching multiple linear patterns overcomes the automaton's
-        capabilities, leaf_to_root merges each group into a single
-        choice based on 'characteristic'ity,
-
-        i.e. (a|b c) -> (a|b) if b more characteristic than c
-
-        Returns: The most 'characteristic'(as defined by
-          get_characteristic_subpattern) path for the compiled pattern
-          tree.
-        """
-
-        for l in self.leaves():
-            subp = l.leaf_to_root()
-            if subp:
-                return subp
-
-    def leaves(self):
-        "Generator that returns the leaves of the tree"
-        for child in self.children:
-            yield from child.leaves()
-        if not self.children:
-            yield self
-
-def reduce_tree(node, parent=None):
-    """
-    Internal function. Reduces a compiled pattern tree to an
-    intermediate representation suitable for feeding the
-    automaton. This also trims off any optional pattern elements(like
-    [a], a*).
-    """
-
-    new_node = None
-    #switch on the node type
-    if node.type == syms.Matcher:
-        #skip
-        node = node.children[0]
-
-    if node.type == syms.Alternatives  :
-        #2 cases
-        if len(node.children) <= 2:
-            #just a single 'Alternative', skip this node
-            new_node = reduce_tree(node.children[0], parent)
-        else:
-            #real alternatives
-            new_node = MinNode(type=TYPE_ALTERNATIVES)
-            #skip odd children('|' tokens)
-            for child in node.children:
-                if node.children.index(child)%2:
-                    continue
-                reduced = reduce_tree(child, new_node)
-                if reduced is not None:
-                    new_node.children.append(reduced)
-    elif node.type == syms.Alternative:
-        if len(node.children) > 1:
-
-            new_node = MinNode(type=TYPE_GROUP)
-            for child in node.children:
-                reduced = reduce_tree(child, new_node)
-                if reduced:
-                    new_node.children.append(reduced)
-            if not new_node.children:
-                # delete the group if all of the children were reduced to None
-                new_node = None
-
-        else:
-            new_node = reduce_tree(node.children[0], parent)
-
-    elif node.type == syms.Unit:
-        if (isinstance(node.children[0], pytree.Leaf) and
-            node.children[0].value == '('):
-            #skip parentheses
-            return reduce_tree(node.children[1], parent)
-        if ((isinstance(node.children[0], pytree.Leaf) and
-               node.children[0].value == '[')
-               or
-               (len(node.children)>1 and
-               hasattr(node.children[1], "value") and
-               node.children[1].value == '[')):
-            #skip whole unit if its optional
-            return None
-
-        leaf = True
-        details_node = None
-        alternatives_node = None
-        has_repeater = False
-        repeater_node = None
-        has_variable_name = False
-
-        for child in node.children:
-            if child.type == syms.Details:
-                leaf = False
-                details_node = child
-            elif child.type == syms.Repeater:
-                has_repeater = True
-                repeater_node = child
-            elif child.type == syms.Alternatives:
-                alternatives_node = child
-            if hasattr(child, 'value') and child.value == '=': # variable name
-                has_variable_name = True
-
-        #skip variable name
-        if has_variable_name:
-            #skip variable name, '='
-            name_leaf = node.children[2]
-            if hasattr(name_leaf, 'value') and name_leaf.value == '(':
-                # skip parenthesis
-                name_leaf = node.children[3]
-        else:
-            name_leaf = node.children[0]
-
-        #set node type
-        if name_leaf.type == token_labels.NAME:
-            #(python) non-name or wildcard
-            if name_leaf.value == 'any':
-                new_node = MinNode(type=TYPE_ANY)
-            else:
-                if hasattr(token_labels, name_leaf.value):
-                    new_node = MinNode(type=getattr(token_labels, name_leaf.value))
-                else:
-                    new_node = MinNode(type=getattr(pysyms, name_leaf.value))
-
-        elif name_leaf.type == token_labels.STRING:
-            #(python) name or character; remove the apostrophes from
-            #the string value
-            name = name_leaf.value.strip("'")
-            if name in tokens:
-                new_node = MinNode(type=tokens[name])
-            else:
-                new_node = MinNode(type=token_labels.NAME, name=name)
-        elif name_leaf.type == syms.Alternatives:
-            new_node = reduce_tree(alternatives_node, parent)
-
-        #handle repeaters
-        if has_repeater:
-            if repeater_node.children[0].value == '*':
-                #reduce to None
-                new_node = None
-            elif repeater_node.children[0].value == '+':
-                #reduce to a single occurrence i.e. do nothing
-                pass
-            else:
-                #TODO: handle {min, max} repeaters
-                raise NotImplementedError
-
-        #add children
-        if details_node and new_node is not None:
-            for child in details_node.children[1:-1]:
-                #skip '<', '>' markers
-                reduced = reduce_tree(child, new_node)
-                if reduced is not None:
-                    new_node.children.append(reduced)
-    if new_node:
-        new_node.parent = parent
-    return new_node
-
-
-def get_characteristic_subpattern(subpatterns):
-    """Picks the most characteristic from a list of linear patterns
-    Current order used is:
-    names > common_names > common_chars
-    """
-    if not isinstance(subpatterns, list):
-        return subpatterns
-    if len(subpatterns)==1:
-        return subpatterns[0]
-
-    # first pick out the ones containing variable names
-    subpatterns_with_names = []
-    subpatterns_with_common_names = []
-    common_names = ['in', 'for', 'if' , 'not', 'None']
-    subpatterns_with_common_chars = []
-    common_chars = "[]().,:"
-    for subpattern in subpatterns:
-        if any(rec_test(subpattern, lambda x: type(x) is str)):
-            if any(rec_test(subpattern,
-                            lambda x: isinstance(x, str) and x in common_chars)):
-                subpatterns_with_common_chars.append(subpattern)
-            elif any(rec_test(subpattern,
-                              lambda x: isinstance(x, str) and x in common_names)):
-                subpatterns_with_common_names.append(subpattern)
-
-            else:
-                subpatterns_with_names.append(subpattern)
-
-    if subpatterns_with_names:
-        subpatterns = subpatterns_with_names
-    elif subpatterns_with_common_names:
-        subpatterns = subpatterns_with_common_names
-    elif subpatterns_with_common_chars:
-        subpatterns = subpatterns_with_common_chars
-    # of the remaining subpatterns pick out the longest one
-    return max(subpatterns, key=len)
-
-def rec_test(sequence, test_func):
-    """Tests test_func on all items of sequence and items of included
-    sub-iterables"""
-    for x in sequence:
-        if isinstance(x, (list, tuple)):
-            yield from rec_test(x, test_func)
-        else:
-            yield test_func(x)
diff --git a/Lib/lib2to3/fixer_base.py b/Lib/lib2to3/fixer_base.py
deleted file mode 100644
index df581a4deab9e9..00000000000000
--- a/Lib/lib2to3/fixer_base.py
+++ /dev/null
@@ -1,186 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Base class for fixers (optional, but recommended)."""
-
-# Python imports
-import itertools
-
-# Local imports
-from .patcomp import PatternCompiler
-from . import pygram
-from .fixer_util import does_tree_import
-
-class BaseFix(object):
-
-    """Optional base class for fixers.
-
-    The subclass name must be FixFooBar where FooBar is the result of
-    removing underscores and capitalizing the words of the fix name.
-    For example, the class name for a fixer named 'has_key' should be
-    FixHasKey.
-    """
-
-    PATTERN = None  # Most subclasses should override with a string literal
-    pattern = None  # Compiled pattern, set by compile_pattern()
-    pattern_tree = None # Tree representation of the pattern
-    options = None  # Options object passed to initializer
-    filename = None # The filename (set by set_filename)
-    numbers = itertools.count(1) # For new_name()
-    used_names = set() # A set of all used NAMEs
-    order = "post" # Does the fixer prefer pre- or post-order traversal
-    explicit = False # Is this ignored by refactor.py -f all?
-    run_order = 5   # Fixers will be sorted by run order before execution
-                    # Lower numbers will be run first.
-    _accept_type = None # [Advanced and not public] This tells RefactoringTool
-                        # which node type to accept when there's not a pattern.
-
-    keep_line_order = False # For the bottom matcher: match with the
-                            # original line order
-    BM_compatible = False # Compatibility with the bottom matching
-                          # module; every fixer should set this
-                          # manually
-
-    # Shortcut for access to Python grammar symbols
-    syms = pygram.python_symbols
-
-    def __init__(self, options, log):
-        """Initializer.  Subclass may override.
-
-        Args:
-            options: a dict containing the options passed to RefactoringTool
-            that could be used to customize the fixer through the command line.
-            log: a list to append warnings and other messages to.
-        """
-        self.options = options
-        self.log = log
-        self.compile_pattern()
-
-    def compile_pattern(self):
-        """Compiles self.PATTERN into self.pattern.
-
-        Subclass may override if it doesn't want to use
-        self.{pattern,PATTERN} in .match().
-        """
-        if self.PATTERN is not None:
-            PC = PatternCompiler()
-            self.pattern, self.pattern_tree = PC.compile_pattern(self.PATTERN,
-                                                                 with_tree=True)
-
-    def set_filename(self, filename):
-        """Set the filename.
-
-        The main refactoring tool should call this.
-        """
-        self.filename = filename
-
-    def match(self, node):
-        """Returns match for a given parse tree node.
-
-        Should return a true or false object (not necessarily a bool).
-        It may return a non-empty dict of matching sub-nodes as
-        returned by a matching pattern.
-
-        Subclass may override.
-        """
-        results = {"node": node}
-        return self.pattern.match(node, results) and results
-
-    def transform(self, node, results):
-        """Returns the transformation for a given parse tree node.
-
-        Args:
-          node: the root of the parse tree that matched the fixer.
-          results: a dict mapping symbolic names to part of the match.
-
-        Returns:
-          None, or a node that is a modified copy of the
-          argument node.  The node argument may also be modified in-place to
-          effect the same change.
-
-        Subclass *must* override.
-        """
-        raise NotImplementedError()
-
-    def new_name(self, template="xxx_todo_changeme"):
-        """Return a string suitable for use as an identifier
-
-        The new name is guaranteed not to conflict with other identifiers.
-        """
-        name = template
-        while name in self.used_names:
-            name = template + str(next(self.numbers))
-        self.used_names.add(name)
-        return name
-
-    def log_message(self, message):
-        if self.first_log:
-            self.first_log = False
-            self.log.append("### In file %s ###" % self.filename)
-        self.log.append(message)
-
-    def cannot_convert(self, node, reason=None):
-        """Warn the user that a given chunk of code is not valid Python 3,
-        but that it cannot be converted automatically.
-
-        First argument is the top-level node for the code in question.
-        Optional second argument is why it can't be converted.
-        """
-        lineno = node.get_lineno()
-        for_output = node.clone()
-        for_output.prefix = ""
-        msg = "Line %d: could not convert: %s"
-        self.log_message(msg % (lineno, for_output))
-        if reason:
-            self.log_message(reason)
-
-    def warning(self, node, reason):
-        """Used for warning the user about possible uncertainty in the
-        translation.
-
-        First argument is the top-level node for the code in question.
-        Optional second argument is why it can't be converted.
-        """
-        lineno = node.get_lineno()
-        self.log_message("Line %d: %s" % (lineno, reason))
-
-    def start_tree(self, tree, filename):
-        """Some fixers need to maintain tree-wide state.
-        This method is called once, at the start of tree fix-up.
-
-        tree - the root node of the tree to be processed.
-        filename - the name of the file the tree came from.
-        """
-        self.used_names = tree.used_names
-        self.set_filename(filename)
-        self.numbers = itertools.count(1)
-        self.first_log = True
-
-    def finish_tree(self, tree, filename):
-        """Some fixers need to maintain tree-wide state.
-        This method is called once, at the conclusion of tree fix-up.
-
-        tree - the root node of the tree to be processed.
-        filename - the name of the file the tree came from.
-        """
-        pass
-
-
-class ConditionalFix(BaseFix):
-    """ Base class for fixers which not execute if an import is found. """
-
-    # This is the name of the import which, if found, will cause the test to be skipped
-    skip_on = None
-
-    def start_tree(self, *args):
-        super(ConditionalFix, self).start_tree(*args)
-        self._should_skip = None
-
-    def should_skip(self, node):
-        if self._should_skip is not None:
-            return self._should_skip
-        pkg = self.skip_on.split(".")
-        name = pkg[-1]
-        pkg = ".".join(pkg[:-1])
-        self._should_skip = does_tree_import(pkg, name, node)
-        return self._should_skip
diff --git a/Lib/lib2to3/fixer_util.py b/Lib/lib2to3/fixer_util.py
deleted file mode 100644
index c2a3a47f503286..00000000000000
--- a/Lib/lib2to3/fixer_util.py
+++ /dev/null
@@ -1,453 +0,0 @@
-"""Utility functions, node construction macros, etc."""
-# Author: Collin Winter
-
-# Local imports
-from .pgen2 import token
-from .pytree import Leaf, Node
-from .pygram import python_symbols as syms
-from . import patcomp
-
-
-###########################################################
-### Common node-construction "macros"
-###########################################################
-
-def KeywordArg(keyword, value):
-    return Node(syms.argument,
-                [keyword, Leaf(token.EQUAL, "="), value])
-
-def LParen():
-    return Leaf(token.LPAR, "(")
-
-def RParen():
-    return Leaf(token.RPAR, ")")
-
-def Assign(target, source):
-    """Build an assignment statement"""
-    if not isinstance(target, list):
-        target = [target]
-    if not isinstance(source, list):
-        source.prefix = " "
-        source = [source]
-
-    return Node(syms.atom,
-                target + [Leaf(token.EQUAL, "=", prefix=" ")] + source)
-
-def Name(name, prefix=None):
-    """Return a NAME leaf"""
-    return Leaf(token.NAME, name, prefix=prefix)
-
-def Attr(obj, attr):
-    """A node tuple for obj.attr"""
-    return [obj, Node(syms.trailer, [Dot(), attr])]
-
-def Comma():
-    """A comma leaf"""
-    return Leaf(token.COMMA, ",")
-
-def Dot():
-    """A period (.) leaf"""
-    return Leaf(token.DOT, ".")
-
-def ArgList(args, lparen=LParen(), rparen=RParen()):
-    """A parenthesised argument list, used by Call()"""
-    node = Node(syms.trailer, [lparen.clone(), rparen.clone()])
-    if args:
-        node.insert_child(1, Node(syms.arglist, args))
-    return node
-
-def Call(func_name, args=None, prefix=None):
-    """A function call"""
-    node = Node(syms.power, [func_name, ArgList(args)])
-    if prefix is not None:
-        node.prefix = prefix
-    return node
-
-def Newline():
-    """A newline literal"""
-    return Leaf(token.NEWLINE, "\n")
-
-def BlankLine():
-    """A blank line"""
-    return Leaf(token.NEWLINE, "")
-
-def Number(n, prefix=None):
-    return Leaf(token.NUMBER, n, prefix=prefix)
-
-def Subscript(index_node):
-    """A numeric or string subscript"""
-    return Node(syms.trailer, [Leaf(token.LBRACE, "["),
-                               index_node,
-                               Leaf(token.RBRACE, "]")])
-
-def String(string, prefix=None):
-    """A string leaf"""
-    return Leaf(token.STRING, string, prefix=prefix)
-
-def ListComp(xp, fp, it, test=None):
-    """A list comprehension of the form [xp for fp in it if test].
-
-    If test is None, the "if test" part is omitted.
-    """
-    xp.prefix = ""
-    fp.prefix = " "
-    it.prefix = " "
-    for_leaf = Leaf(token.NAME, "for")
-    for_leaf.prefix = " "
-    in_leaf = Leaf(token.NAME, "in")
-    in_leaf.prefix = " "
-    inner_args = [for_leaf, fp, in_leaf, it]
-    if test:
-        test.prefix = " "
-        if_leaf = Leaf(token.NAME, "if")
-        if_leaf.prefix = " "
-        inner_args.append(Node(syms.comp_if, [if_leaf, test]))
-    inner = Node(syms.listmaker, [xp, Node(syms.comp_for, inner_args)])
-    return Node(syms.atom,
-                       [Leaf(token.LBRACE, "["),
-                        inner,
-                        Leaf(token.RBRACE, "]")])
-
-def FromImport(package_name, name_leafs):
-    """ Return an import statement in the form:
-        from package import name_leafs"""
-    # XXX: May not handle dotted imports properly (eg, package_name='foo.bar')
-    #assert package_name == '.' or '.' not in package_name, "FromImport has "\
-    #       "not been tested with dotted package names -- use at your own "\
-    #       "peril!"
-
-    for leaf in name_leafs:
-        # Pull the leaves out of their old tree
-        leaf.remove()
-
-    children = [Leaf(token.NAME, "from"),
-                Leaf(token.NAME, package_name, prefix=" "),
-                Leaf(token.NAME, "import", prefix=" "),
-                Node(syms.import_as_names, name_leafs)]
-    imp = Node(syms.import_from, children)
-    return imp
-
-def ImportAndCall(node, results, names):
-    """Returns an import statement and calls a method
-    of the module:
-
-    import module
-    module.name()"""
-    obj = results["obj"].clone()
-    if obj.type == syms.arglist:
-        newarglist = obj.clone()
-    else:
-        newarglist = Node(syms.arglist, [obj.clone()])
-    after = results["after"]
-    if after:
-        after = [n.clone() for n in after]
-    new = Node(syms.power,
-               Attr(Name(names[0]), Name(names[1])) +
-               [Node(syms.trailer,
-                     [results["lpar"].clone(),
-                      newarglist,
-                      results["rpar"].clone()])] + after)
-    new.prefix = node.prefix
-    return new
-
-
-###########################################################
-### Determine whether a node represents a given literal
-###########################################################
-
-def is_tuple(node):
-    """Does the node represent a tuple literal?"""
-    if isinstance(node, Node) and node.children == [LParen(), RParen()]:
-        return True
-    return (isinstance(node, Node)
-            and len(node.children) == 3
-            and isinstance(node.children[0], Leaf)
-            and isinstance(node.children[1], Node)
-            and isinstance(node.children[2], Leaf)
-            and node.children[0].value == "("
-            and node.children[2].value == ")")
-
-def is_list(node):
-    """Does the node represent a list literal?"""
-    return (isinstance(node, Node)
-            and len(node.children) > 1
-            and isinstance(node.children[0], Leaf)
-            and isinstance(node.children[-1], Leaf)
-            and node.children[0].value == "["
-            and node.children[-1].value == "]")
-
-
-###########################################################
-### Misc
-###########################################################
-
-def parenthesize(node):
-    return Node(syms.atom, [LParen(), node, RParen()])
-
-
-consuming_calls = {"sorted", "list", "set", "any", "all", "tuple", "sum",
-                   "min", "max", "enumerate"}
-
-def attr_chain(obj, attr):
-    """Follow an attribute chain.
-
-    If you have a chain of objects where a.foo -> b, b.foo-> c, etc,
-    use this to iterate over all objects in the chain. Iteration is
-    terminated by getattr(x, attr) is None.
-
-    Args:
-        obj: the starting object
-        attr: the name of the chaining attribute
-
-    Yields:
-        Each successive object in the chain.
-    """
-    next = getattr(obj, attr)
-    while next:
-        yield next
-        next = getattr(next, attr)
-
-p0 = """for_stmt< 'for' any 'in' node=any ':' any* >
-        | comp_for< 'for' any 'in' node=any any* >
-     """
-p1 = """
-power<
-    ( 'iter' | 'list' | 'tuple' | 'sorted' | 'set' | 'sum' |
-      'any' | 'all' | 'enumerate' | (any* trailer< '.' 'join' >) )
-    trailer< '(' node=any ')' >
-    any*
->
-"""
-p2 = """
-power<
-    ( 'sorted' | 'enumerate' )
-    trailer< '(' arglist<node=any any*> ')' >
-    any*
->
-"""
-pats_built = False
-def in_special_context(node):
-    """ Returns true if node is in an environment where all that is required
-        of it is being iterable (ie, it doesn't matter if it returns a list
-        or an iterator).
-        See test_map_nochange in test_fixers.py for some examples and tests.
-        """
-    global p0, p1, p2, pats_built
-    if not pats_built:
-        p0 = patcomp.compile_pattern(p0)
-        p1 = patcomp.compile_pattern(p1)
-        p2 = patcomp.compile_pattern(p2)
-        pats_built = True
-    patterns = [p0, p1, p2]
-    for pattern, parent in zip(patterns, attr_chain(node, "parent")):
-        results = {}
-        if pattern.match(parent, results) and results["node"] is node:
-            return True
-    return False
-
-def is_probably_builtin(node):
-    """
-    Check that something isn't an attribute or function name etc.
-    """
-    prev = node.prev_sibling
-    if prev is not None and prev.type == token.DOT:
-        # Attribute lookup.
-        return False
-    parent = node.parent
-    if parent.type in (syms.funcdef, syms.classdef):
-        return False
-    if parent.type == syms.expr_stmt and parent.children[0] is node:
-        # Assignment.
-        return False
-    if parent.type == syms.parameters or \
-            (parent.type == syms.typedargslist and (
-            (prev is not None and prev.type == token.COMMA) or
-            parent.children[0] is node
-            )):
-        # The name of an argument.
-        return False
-    return True
-
-def find_indentation(node):
-    """Find the indentation of *node*."""
-    while node is not None:
-        if node.type == syms.suite and len(node.children) > 2:
-            indent = node.children[1]
-            if indent.type == token.INDENT:
-                return indent.value
-        node = node.parent
-    return ""
-
-###########################################################
-### The following functions are to find bindings in a suite
-###########################################################
-
-def make_suite(node):
-    if node.type == syms.suite:
-        return node
-    node = node.clone()
-    parent, node.parent = node.parent, None
-    suite = Node(syms.suite, [node])
-    suite.parent = parent
-    return suite
-
-def find_root(node):
-    """Find the top level namespace."""
-    # Scamper up to the top level namespace
-    while node.type != syms.file_input:
-        node = node.parent
-        if not node:
-            raise ValueError("root found before file_input node was found.")
-    return node
-
-def does_tree_import(package, name, node):
-    """ Returns true if name is imported from package at the
-        top level of the tree which node belongs to.
-        To cover the case of an import like 'import foo', use
-        None for the package and 'foo' for the name. """
-    binding = find_binding(name, find_root(node), package)
-    return bool(binding)
-
-def is_import(node):
-    """Returns true if the node is an import statement."""
-    return node.type in (syms.import_name, syms.import_from)
-
-def touch_import(package, name, node):
-    """ Works like `does_tree_import` but adds an import statement
-        if it was not imported. """
-    def is_import_stmt(node):
-        return (node.type == syms.simple_stmt and node.children and
-                is_import(node.children[0]))
-
-    root = find_root(node)
-
-    if does_tree_import(package, name, root):
-        return
-
-    # figure out where to insert the new import.  First try to find
-    # the first import and then skip to the last one.
-    insert_pos = offset = 0
-    for idx, node in enumerate(root.children):
-        if not is_import_stmt(node):
-            continue
-        for offset, node2 in enumerate(root.children[idx:]):
-            if not is_import_stmt(node2):
-                break
-        insert_pos = idx + offset
-        break
-
-    # if there are no imports where we can insert, find the docstring.
-    # if that also fails, we stick to the beginning of the file
-    if insert_pos == 0:
-        for idx, node in enumerate(root.children):
-            if (node.type == syms.simple_stmt and node.children and
-               node.children[0].type == token.STRING):
-                insert_pos = idx + 1
-                break
-
-    if package is None:
-        import_ = Node(syms.import_name, [
-            Leaf(token.NAME, "import"),
-            Leaf(token.NAME, name, prefix=" ")
-        ])
-    else:
-        import_ = FromImport(package, [Leaf(token.NAME, name, prefix=" ")])
-
-    children = [import_, Newline()]
-    root.insert_child(insert_pos, Node(syms.simple_stmt, children))
-
-
-_def_syms = {syms.classdef, syms.funcdef}
-def find_binding(name, node, package=None):
-    """ Returns the node which binds variable name, otherwise None.
-        If optional argument package is supplied, only imports will
-        be returned.
-        See test cases for examples."""
-    for child in node.children:
-        ret = None
-        if child.type == syms.for_stmt:
-            if _find(name, child.children[1]):
-                return child
-            n = find_binding(name, make_suite(child.children[-1]), package)
-            if n: ret = n
-        elif child.type in (syms.if_stmt, syms.while_stmt):
-            n = find_binding(name, make_suite(child.children[-1]), package)
-            if n: ret = n
-        elif child.type == syms.try_stmt:
-            n = find_binding(name, make_suite(child.children[2]), package)
-            if n:
-                ret = n
-            else:
-                for i, kid in enumerate(child.children[3:]):
-                    if kid.type == token.COLON and kid.value == ":":
-                        # i+3 is the colon, i+4 is the suite
-                        n = find_binding(name, make_suite(child.children[i+4]), package)
-                        if n: ret = n
-        elif child.type in _def_syms and child.children[1].value == name:
-            ret = child
-        elif _is_import_binding(child, name, package):
-            ret = child
-        elif child.type == syms.simple_stmt:
-            ret = find_binding(name, child, package)
-        elif child.type == syms.expr_stmt:
-            if _find(name, child.children[0]):
-                ret = child
-
-        if ret:
-            if not package:
-                return ret
-            if is_import(ret):
-                return ret
-    return None
-
-_block_syms = {syms.funcdef, syms.classdef, syms.trailer}
-def _find(name, node):
-    nodes = [node]
-    while nodes:
-        node = nodes.pop()
-        if node.type > 256 and node.type not in _block_syms:
-            nodes.extend(node.children)
-        elif node.type == token.NAME and node.value == name:
-            return node
-    return None
-
-def _is_import_binding(node, name, package=None):
-    """ Will return node if node will import name, or node
-        will import * from package.  None is returned otherwise.
-        See test cases for examples. """
-
-    if node.type == syms.import_name and not package:
-        imp = node.children[1]
-        if imp.type == syms.dotted_as_names:
-            for child in imp.children:
-                if child.type == syms.dotted_as_name:
-                    if child.children[2].value == name:
-                        return node
-                elif child.type == token.NAME and child.value == name:
-                    return node
-        elif imp.type == syms.dotted_as_name:
-            last = imp.children[-1]
-            if last.type == token.NAME and last.value == name:
-                return node
-        elif imp.type == token.NAME and imp.value == name:
-            return node
-    elif node.type == syms.import_from:
-        # str(...) is used to make life easier here, because
-        # from a.b import parses to ['import', ['a', '.', 'b'], ...]
-        if package and str(node.children[1]).strip() != package:
-            return None
-        n = node.children[3]
-        if package and _find("as", n):
-            # See test_from_import_as for explanation
-            return None
-        elif n.type == syms.import_as_names and _find(name, n):
-            return node
-        elif n.type == syms.import_as_name:
-            child = n.children[2]
-            if child.type == token.NAME and child.value == name:
-                return node
-        elif n.type == token.NAME and n.value == name:
-            return node
-        elif package and n.type == token.STAR:
-            return node
-    return None
diff --git a/Lib/lib2to3/fixes/__init__.py b/Lib/lib2to3/fixes/__init__.py
deleted file mode 100644
index b93054b3ecf3a5..00000000000000
--- a/Lib/lib2to3/fixes/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-# Dummy file to make this directory a package.
diff --git a/Lib/lib2to3/fixes/fix_apply.py b/Lib/lib2to3/fixes/fix_apply.py
deleted file mode 100644
index 6408582c426477..00000000000000
--- a/Lib/lib2to3/fixes/fix_apply.py
+++ /dev/null
@@ -1,68 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for apply().
-
-This converts apply(func, v, k) into (func)(*v, **k)."""
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Call, Comma, parenthesize
-
-class FixApply(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    power< 'apply'
-        trailer<
-            '('
-            arglist<
-                (not argument<NAME '=' any>) func=any ','
-                (not argument<NAME '=' any>) args=any [','
-                (not argument<NAME '=' any>) kwds=any] [',']
-            >
-            ')'
-        >
-    >
-    """
-
-    def transform(self, node, results):
-        syms = self.syms
-        assert results
-        func = results["func"]
-        args = results["args"]
-        kwds = results.get("kwds")
-        # I feel like we should be able to express this logic in the
-        # PATTERN above but I don't know how to do it so...
-        if args:
-            if (args.type == self.syms.argument and
-                args.children[0].value in {'**', '*'}):
-                return  # Make no change.
-        if kwds and (kwds.type == self.syms.argument and
-                     kwds.children[0].value == '**'):
-            return  # Make no change.
-        prefix = node.prefix
-        func = func.clone()
-        if (func.type not in (token.NAME, syms.atom) and
-            (func.type != syms.power or
-             func.children[-2].type == token.DOUBLESTAR)):
-            # Need to parenthesize
-            func = parenthesize(func)
-        func.prefix = ""
-        args = args.clone()
-        args.prefix = ""
-        if kwds is not None:
-            kwds = kwds.clone()
-            kwds.prefix = ""
-        l_newargs = [pytree.Leaf(token.STAR, "*"), args]
-        if kwds is not None:
-            l_newargs.extend([Comma(),
-                              pytree.Leaf(token.DOUBLESTAR, "**"),
-                              kwds])
-            l_newargs[-2].prefix = " " # that's the ** token
-        # XXX Sometimes we could be cleverer, e.g. apply(f, (x, y) + t)
-        # can be translated into f(x, y, *t) instead of f(*(x, y) + t)
-        #new = pytree.Node(syms.power, (func, ArgList(l_newargs)))
-        return Call(func, l_newargs, prefix=prefix)
diff --git a/Lib/lib2to3/fixes/fix_asserts.py b/Lib/lib2to3/fixes/fix_asserts.py
deleted file mode 100644
index 5bcec885f52cbf..00000000000000
--- a/Lib/lib2to3/fixes/fix_asserts.py
+++ /dev/null
@@ -1,34 +0,0 @@
-"""Fixer that replaces deprecated unittest method names."""
-
-# Author: Ezio Melotti
-
-from ..fixer_base import BaseFix
-from ..fixer_util import Name
-
-NAMES = dict(
-    assert_="assertTrue",
-    assertEquals="assertEqual",
-    assertNotEquals="assertNotEqual",
-    assertAlmostEquals="assertAlmostEqual",
-    assertNotAlmostEquals="assertNotAlmostEqual",
-    assertRegexpMatches="assertRegex",
-    assertRaisesRegexp="assertRaisesRegex",
-    failUnlessEqual="assertEqual",
-    failIfEqual="assertNotEqual",
-    failUnlessAlmostEqual="assertAlmostEqual",
-    failIfAlmostEqual="assertNotAlmostEqual",
-    failUnless="assertTrue",
-    failUnlessRaises="assertRaises",
-    failIf="assertFalse",
-)
-
-
-class FixAsserts(BaseFix):
-
-    PATTERN = """
-              power< any+ trailer< '.' meth=(%s)> any* >
-              """ % '|'.join(map(repr, NAMES))
-
-    def transform(self, node, results):
-        name = results["meth"][0]
-        name.replace(Name(NAMES[str(name)], prefix=name.prefix))
diff --git a/Lib/lib2to3/fixes/fix_basestring.py b/Lib/lib2to3/fixes/fix_basestring.py
deleted file mode 100644
index 5fe69a0f03b1b8..00000000000000
--- a/Lib/lib2to3/fixes/fix_basestring.py
+++ /dev/null
@@ -1,14 +0,0 @@
-"""Fixer for basestring -> str."""
-# Author: Christian Heimes
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-class FixBasestring(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = "'basestring'"
-
-    def transform(self, node, results):
-        return Name("str", prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_buffer.py b/Lib/lib2to3/fixes/fix_buffer.py
deleted file mode 100644
index f9a1958ad3b93e..00000000000000
--- a/Lib/lib2to3/fixes/fix_buffer.py
+++ /dev/null
@@ -1,22 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that changes buffer(...) into memoryview(...)."""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-
-class FixBuffer(fixer_base.BaseFix):
-    BM_compatible = True
-
-    explicit = True # The user must ask for this fixer
-
-    PATTERN = """
-              power< name='buffer' trailer< '(' [any] ')' > any* >
-              """
-
-    def transform(self, node, results):
-        name = results["name"]
-        name.replace(Name("memoryview", prefix=name.prefix))
diff --git a/Lib/lib2to3/fixes/fix_dict.py b/Lib/lib2to3/fixes/fix_dict.py
deleted file mode 100644
index d3655c9f1b2d9b..00000000000000
--- a/Lib/lib2to3/fixes/fix_dict.py
+++ /dev/null
@@ -1,106 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for dict methods.
-
-d.keys() -> list(d.keys())
-d.items() -> list(d.items())
-d.values() -> list(d.values())
-
-d.iterkeys() -> iter(d.keys())
-d.iteritems() -> iter(d.items())
-d.itervalues() -> iter(d.values())
-
-d.viewkeys() -> d.keys()
-d.viewitems() -> d.items()
-d.viewvalues() -> d.values()
-
-Except in certain very specific contexts: the iter() can be dropped
-when the context is list(), sorted(), iter() or for...in; the list()
-can be dropped when the context is list() or sorted() (but not iter()
-or for...in!). Special contexts that apply to both: list(), sorted(), tuple()
-set(), any(), all(), sum().
-
-Note: iter(d.keys()) could be written as iter(d) but since the
-original d.iterkeys() was also redundant we don't fix this.  And there
-are (rare) contexts where it makes a difference (e.g. when passing it
-as an argument to a function that introspects the argument).
-"""
-
-# Local imports
-from .. import pytree
-from .. import patcomp
-from .. import fixer_base
-from ..fixer_util import Name, Call, Dot
-from .. import fixer_util
-
-
-iter_exempt = fixer_util.consuming_calls | {"iter"}
-
-
-class FixDict(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    power< head=any+
-         trailer< '.' method=('keys'|'items'|'values'|
-                              'iterkeys'|'iteritems'|'itervalues'|
-                              'viewkeys'|'viewitems'|'viewvalues') >
-         parens=trailer< '(' ')' >
-         tail=any*
-    >
-    """
-
-    def transform(self, node, results):
-        head = results["head"]
-        method = results["method"][0] # Extract node for method name
-        tail = results["tail"]
-        syms = self.syms
-        method_name = method.value
-        isiter = method_name.startswith("iter")
-        isview = method_name.startswith("view")
-        if isiter or isview:
-            method_name = method_name[4:]
-        assert method_name in ("keys", "items", "values"), repr(method)
-        head = [n.clone() for n in head]
-        tail = [n.clone() for n in tail]
-        special = not tail and self.in_special_context(node, isiter)
-        args = head + [pytree.Node(syms.trailer,
-                                   [Dot(),
-                                    Name(method_name,
-                                         prefix=method.prefix)]),
-                       results["parens"].clone()]
-        new = pytree.Node(syms.power, args)
-        if not (special or isview):
-            new.prefix = ""
-            new = Call(Name("iter" if isiter else "list"), [new])
-        if tail:
-            new = pytree.Node(syms.power, [new] + tail)
-        new.prefix = node.prefix
-        return new
-
-    P1 = "power< func=NAME trailer< '(' node=any ')' > any* >"
-    p1 = patcomp.compile_pattern(P1)
-
-    P2 = """for_stmt< 'for' any 'in' node=any ':' any* >
-            | comp_for< 'for' any 'in' node=any any* >
-         """
-    p2 = patcomp.compile_pattern(P2)
-
-    def in_special_context(self, node, isiter):
-        if node.parent is None:
-            return False
-        results = {}
-        if (node.parent.parent is not None and
-               self.p1.match(node.parent.parent, results) and
-               results["node"] is node):
-            if isiter:
-                # iter(d.iterkeys()) -> iter(d.keys()), etc.
-                return results["func"].value in iter_exempt
-            else:
-                # list(d.keys()) -> list(d.keys()), etc.
-                return results["func"].value in fixer_util.consuming_calls
-        if not isiter:
-            return False
-        # for ... in d.iterkeys() -> for ... in d.keys(), etc.
-        return self.p2.match(node.parent, results) and results["node"] is node
diff --git a/Lib/lib2to3/fixes/fix_except.py b/Lib/lib2to3/fixes/fix_except.py
deleted file mode 100644
index 49bd3d5ab7d6cc..00000000000000
--- a/Lib/lib2to3/fixes/fix_except.py
+++ /dev/null
@@ -1,93 +0,0 @@
-"""Fixer for except statements with named exceptions.
-
-The following cases will be converted:
-
-- "except E, T:" where T is a name:
-
-    except E as T:
-
-- "except E, T:" where T is not a name, tuple or list:
-
-        except E as t:
-            T = t
-
-    This is done because the target of an "except" clause must be a
-    name.
-
-- "except E, T:" where T is a tuple or list literal:
-
-        except E as t:
-            T = t.args
-"""
-# Author: Collin Winter
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Assign, Attr, Name, is_tuple, is_list, syms
-
-def find_excepts(nodes):
-    for i, n in enumerate(nodes):
-        if n.type == syms.except_clause:
-            if n.children[0].value == 'except':
-                yield (n, nodes[i+2])
-
-class FixExcept(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    try_stmt< 'try' ':' (simple_stmt | suite)
-                  cleanup=(except_clause ':' (simple_stmt | suite))+
-                  tail=(['except' ':' (simple_stmt | suite)]
-                        ['else' ':' (simple_stmt | suite)]
-                        ['finally' ':' (simple_stmt | suite)]) >
-    """
-
-    def transform(self, node, results):
-        syms = self.syms
-
-        tail = [n.clone() for n in results["tail"]]
-
-        try_cleanup = [ch.clone() for ch in results["cleanup"]]
-        for except_clause, e_suite in find_excepts(try_cleanup):
-            if len(except_clause.children) == 4:
-                (E, comma, N) = except_clause.children[1:4]
-                comma.replace(Name("as", prefix=" "))
-
-                if N.type != token.NAME:
-                    # Generate a new N for the except clause
-                    new_N = Name(self.new_name(), prefix=" ")
-                    target = N.clone()
-                    target.prefix = ""
-                    N.replace(new_N)
-                    new_N = new_N.clone()
-
-                    # Insert "old_N = new_N" as the first statement in
-                    #  the except body. This loop skips leading whitespace
-                    #  and indents
-                    #TODO(cwinter) suite-cleanup
-                    suite_stmts = e_suite.children
-                    for i, stmt in enumerate(suite_stmts):
-                        if isinstance(stmt, pytree.Node):
-                            break
-
-                    # The assignment is different if old_N is a tuple or list
-                    # In that case, the assignment is old_N = new_N.args
-                    if is_tuple(N) or is_list(N):
-                        assign = Assign(target, Attr(new_N, Name('args')))
-                    else:
-                        assign = Assign(target, new_N)
-
-                    #TODO(cwinter) stopgap until children becomes a smart list
-                    for child in reversed(suite_stmts[:i]):
-                        e_suite.insert_child(0, child)
-                    e_suite.insert_child(i, assign)
-                elif N.prefix == "":
-                    # No space after a comma is legal; no space after "as",
-                    # not so much.
-                    N.prefix = " "
-
-        #TODO(cwinter) fix this when children becomes a smart list
-        children = [c.clone() for c in node.children[:3]] + try_cleanup + tail
-        return pytree.Node(node.type, children)
diff --git a/Lib/lib2to3/fixes/fix_exec.py b/Lib/lib2to3/fixes/fix_exec.py
deleted file mode 100644
index ab921ee80cdf36..00000000000000
--- a/Lib/lib2to3/fixes/fix_exec.py
+++ /dev/null
@@ -1,39 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for exec.
-
-This converts usages of the exec statement into calls to a built-in
-exec() function.
-
-exec code in ns1, ns2 -> exec(code, ns1, ns2)
-"""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Comma, Name, Call
-
-
-class FixExec(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    exec_stmt< 'exec' a=any 'in' b=any [',' c=any] >
-    |
-    exec_stmt< 'exec' (not atom<'(' [any] ')'>) a=any >
-    """
-
-    def transform(self, node, results):
-        assert results
-        syms = self.syms
-        a = results["a"]
-        b = results.get("b")
-        c = results.get("c")
-        args = [a.clone()]
-        args[0].prefix = ""
-        if b is not None:
-            args.extend([Comma(), b.clone()])
-        if c is not None:
-            args.extend([Comma(), c.clone()])
-
-        return Call(Name("exec"), args, prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_execfile.py b/Lib/lib2to3/fixes/fix_execfile.py
deleted file mode 100644
index b6c786fd4e8b6a..00000000000000
--- a/Lib/lib2to3/fixes/fix_execfile.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for execfile.
-
-This converts usages of the execfile function into calls to the built-in
-exec() function.
-"""
-
-from .. import fixer_base
-from ..fixer_util import (Comma, Name, Call, LParen, RParen, Dot, Node,
-                          ArgList, String, syms)
-
-
-class FixExecfile(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    power< 'execfile' trailer< '(' arglist< filename=any [',' globals=any [',' locals=any ] ] > ')' > >
-    |
-    power< 'execfile' trailer< '(' filename=any ')' > >
-    """
-
-    def transform(self, node, results):
-        assert results
-        filename = results["filename"]
-        globals = results.get("globals")
-        locals = results.get("locals")
-
-        # Copy over the prefix from the right parentheses end of the execfile
-        # call.
-        execfile_paren = node.children[-1].children[-1].clone()
-        # Construct open().read().
-        open_args = ArgList([filename.clone(), Comma(), String('"rb"', ' ')],
-                            rparen=execfile_paren)
-        open_call = Node(syms.power, [Name("open"), open_args])
-        read = [Node(syms.trailer, [Dot(), Name('read')]),
-                Node(syms.trailer, [LParen(), RParen()])]
-        open_expr = [open_call] + read
-        # Wrap the open call in a compile call. This is so the filename will be
-        # preserved in the execed code.
-        filename_arg = filename.clone()
-        filename_arg.prefix = " "
-        exec_str = String("'exec'", " ")
-        compile_args = open_expr + [Comma(), filename_arg, Comma(), exec_str]
-        compile_call = Call(Name("compile"), compile_args, "")
-        # Finally, replace the execfile call with an exec call.
-        args = [compile_call]
-        if globals is not None:
-            args.extend([Comma(), globals.clone()])
-        if locals is not None:
-            args.extend([Comma(), locals.clone()])
-        return Call(Name("exec"), args, prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_exitfunc.py b/Lib/lib2to3/fixes/fix_exitfunc.py
deleted file mode 100644
index 2e47887afead36..00000000000000
--- a/Lib/lib2to3/fixes/fix_exitfunc.py
+++ /dev/null
@@ -1,72 +0,0 @@
-"""
-Convert use of sys.exitfunc to use the atexit module.
-"""
-
-# Author: Benjamin Peterson
-
-from lib2to3 import pytree, fixer_base
-from lib2to3.fixer_util import Name, Attr, Call, Comma, Newline, syms
-
-
-class FixExitfunc(fixer_base.BaseFix):
-    keep_line_order = True
-    BM_compatible = True
-
-    PATTERN = """
-              (
-                  sys_import=import_name<'import'
-                      ('sys'
-                      |
-                      dotted_as_names< (any ',')* 'sys' (',' any)* >
-                      )
-                  >
-              |
-                  expr_stmt<
-                      power< 'sys' trailer< '.' 'exitfunc' > >
-                  '=' func=any >
-              )
-              """
-
-    def __init__(self, *args):
-        super(FixExitfunc, self).__init__(*args)
-
-    def start_tree(self, tree, filename):
-        super(FixExitfunc, self).start_tree(tree, filename)
-        self.sys_import = None
-
-    def transform(self, node, results):
-        # First, find the sys import. We'll just hope it's global scope.
-        if "sys_import" in results:
-            if self.sys_import is None:
-                self.sys_import = results["sys_import"]
-            return
-
-        func = results["func"].clone()
-        func.prefix = ""
-        register = pytree.Node(syms.power,
-                               Attr(Name("atexit"), Name("register"))
-                               )
-        call = Call(register, [func], node.prefix)
-        node.replace(call)
-
-        if self.sys_import is None:
-            # That's interesting.
-            self.warning(node, "Can't find sys import; Please add an atexit "
-                             "import at the top of your file.")
-            return
-
-        # Now add an atexit import after the sys import.
-        names = self.sys_import.children[1]
-        if names.type == syms.dotted_as_names:
-            names.append_child(Comma())
-            names.append_child(Name("atexit", " "))
-        else:
-            containing_stmt = self.sys_import.parent
-            position = containing_stmt.children.index(self.sys_import)
-            stmt_container = containing_stmt.parent
-            new_import = pytree.Node(syms.import_name,
-                              [Name("import"), Name("atexit", " ")]
-                              )
-            new = pytree.Node(syms.simple_stmt, [new_import])
-            containing_stmt.insert_child(position + 1, Newline())
-            containing_stmt.insert_child(position + 2, new)
diff --git a/Lib/lib2to3/fixes/fix_filter.py b/Lib/lib2to3/fixes/fix_filter.py
deleted file mode 100644
index 38e9078f11ac88..00000000000000
--- a/Lib/lib2to3/fixes/fix_filter.py
+++ /dev/null
@@ -1,94 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that changes filter(F, X) into list(filter(F, X)).
-
-We avoid the transformation if the filter() call is directly contained
-in iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or
-for V in <>:.
-
-NOTE: This is still not correct if the original code was depending on
-filter(F, X) to return a string if X is a string and a tuple if X is a
-tuple.  That would require type inference, which we don't do.  Let
-Python 2.6 figure it out.
-"""
-
-# Local imports
-from .. import fixer_base
-from ..pytree import Node
-from ..pygram import python_symbols as syms
-from ..fixer_util import Name, ArgList, ListComp, in_special_context, parenthesize
-
-
-class FixFilter(fixer_base.ConditionalFix):
-    BM_compatible = True
-
-    PATTERN = """
-    filter_lambda=power<
-        'filter'
-        trailer<
-            '('
-            arglist<
-                lambdef< 'lambda'
-                         (fp=NAME | vfpdef< '(' fp=NAME ')'> ) ':' xp=any
-                >
-                ','
-                it=any
-            >
-            ')'
-        >
-        [extra_trailers=trailer*]
-    >
-    |
-    power<
-        'filter'
-        trailer< '(' arglist< none='None' ',' seq=any > ')' >
-        [extra_trailers=trailer*]
-    >
-    |
-    power<
-        'filter'
-        args=trailer< '(' [any] ')' >
-        [extra_trailers=trailer*]
-    >
-    """
-
-    skip_on = "future_builtins.filter"
-
-    def transform(self, node, results):
-        if self.should_skip(node):
-            return
-
-        trailers = []
-        if 'extra_trailers' in results:
-            for t in results['extra_trailers']:
-                trailers.append(t.clone())
-
-        if "filter_lambda" in results:
-            xp = results.get("xp").clone()
-            if xp.type == syms.test:
-                xp.prefix = ""
-                xp = parenthesize(xp)
-
-            new = ListComp(results.get("fp").clone(),
-                           results.get("fp").clone(),
-                           results.get("it").clone(), xp)
-            new = Node(syms.power, [new] + trailers, prefix="")
-
-        elif "none" in results:
-            new = ListComp(Name("_f"),
-                           Name("_f"),
-                           results["seq"].clone(),
-                           Name("_f"))
-            new = Node(syms.power, [new] + trailers, prefix="")
-
-        else:
-            if in_special_context(node):
-                return None
-
-            args = results['args'].clone()
-            new = Node(syms.power, [Name("filter"), args], prefix="")
-            new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
-            new.prefix = ""
-        new.prefix = node.prefix
-        return new
diff --git a/Lib/lib2to3/fixes/fix_funcattrs.py b/Lib/lib2to3/fixes/fix_funcattrs.py
deleted file mode 100644
index 67f3e18e061bdb..00000000000000
--- a/Lib/lib2to3/fixes/fix_funcattrs.py
+++ /dev/null
@@ -1,21 +0,0 @@
-"""Fix function attribute names (f.func_x -> f.__x__)."""
-# Author: Collin Winter
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-
-class FixFuncattrs(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    power< any+ trailer< '.' attr=('func_closure' | 'func_doc' | 'func_globals'
-                                  | 'func_name' | 'func_defaults' | 'func_code'
-                                  | 'func_dict') > any* >
-    """
-
-    def transform(self, node, results):
-        attr = results["attr"][0]
-        attr.replace(Name(("__%s__" % attr.value[5:]),
-                          prefix=attr.prefix))
diff --git a/Lib/lib2to3/fixes/fix_future.py b/Lib/lib2to3/fixes/fix_future.py
deleted file mode 100644
index fbcb86af079133..00000000000000
--- a/Lib/lib2to3/fixes/fix_future.py
+++ /dev/null
@@ -1,22 +0,0 @@
-"""Remove __future__ imports
-
-from __future__ import foo is replaced with an empty line.
-"""
-# Author: Christian Heimes
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import BlankLine
-
-class FixFuture(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """import_from< 'from' module_name="__future__" 'import' any >"""
-
-    # This should be run last -- some things check for the import
-    run_order = 10
-
-    def transform(self, node, results):
-        new = BlankLine()
-        new.prefix = node.prefix
-        return new
diff --git a/Lib/lib2to3/fixes/fix_getcwdu.py b/Lib/lib2to3/fixes/fix_getcwdu.py
deleted file mode 100644
index 087eaedcb26f9c..00000000000000
--- a/Lib/lib2to3/fixes/fix_getcwdu.py
+++ /dev/null
@@ -1,19 +0,0 @@
-"""
-Fixer that changes os.getcwdu() to os.getcwd().
-"""
-# Author: Victor Stinner
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-class FixGetcwdu(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-              power< 'os' trailer< dot='.' name='getcwdu' > any* >
-              """
-
-    def transform(self, node, results):
-        name = results["name"]
-        name.replace(Name("getcwd", prefix=name.prefix))
diff --git a/Lib/lib2to3/fixes/fix_has_key.py b/Lib/lib2to3/fixes/fix_has_key.py
deleted file mode 100644
index 439708c9923404..00000000000000
--- a/Lib/lib2to3/fixes/fix_has_key.py
+++ /dev/null
@@ -1,109 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for has_key().
-
-Calls to .has_key() methods are expressed in terms of the 'in'
-operator:
-
-    d.has_key(k) -> k in d
-
-CAVEATS:
-1) While the primary target of this fixer is dict.has_key(), the
-   fixer will change any has_key() method call, regardless of its
-   class.
-
-2) Cases like this will not be converted:
-
-    m = d.has_key
-    if m(k):
-        ...
-
-   Only *calls* to has_key() are converted. While it is possible to
-   convert the above to something like
-
-    m = d.__contains__
-    if m(k):
-        ...
-
-   this is currently not done.
-"""
-
-# Local imports
-from .. import pytree
-from .. import fixer_base
-from ..fixer_util import Name, parenthesize
-
-
-class FixHasKey(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    anchor=power<
-        before=any+
-        trailer< '.' 'has_key' >
-        trailer<
-            '('
-            ( not(arglist | argument<any '=' any>) arg=any
-            | arglist<(not argument<any '=' any>) arg=any ','>
-            )
-            ')'
-        >
-        after=any*
-    >
-    |
-    negation=not_test<
-        'not'
-        anchor=power<
-            before=any+
-            trailer< '.' 'has_key' >
-            trailer<
-                '('
-                ( not(arglist | argument<any '=' any>) arg=any
-                | arglist<(not argument<any '=' any>) arg=any ','>
-                )
-                ')'
-            >
-        >
-    >
-    """
-
-    def transform(self, node, results):
-        assert results
-        syms = self.syms
-        if (node.parent.type == syms.not_test and
-            self.pattern.match(node.parent)):
-            # Don't transform a node matching the first alternative of the
-            # pattern when its parent matches the second alternative
-            return None
-        negation = results.get("negation")
-        anchor = results["anchor"]
-        prefix = node.prefix
-        before = [n.clone() for n in results["before"]]
-        arg = results["arg"].clone()
-        after = results.get("after")
-        if after:
-            after = [n.clone() for n in after]
-        if arg.type in (syms.comparison, syms.not_test, syms.and_test,
-                        syms.or_test, syms.test, syms.lambdef, syms.argument):
-            arg = parenthesize(arg)
-        if len(before) == 1:
-            before = before[0]
-        else:
-            before = pytree.Node(syms.power, before)
-        before.prefix = " "
-        n_op = Name("in", prefix=" ")
-        if negation:
-            n_not = Name("not", prefix=" ")
-            n_op = pytree.Node(syms.comp_op, (n_not, n_op))
-        new = pytree.Node(syms.comparison, (arg, n_op, before))
-        if after:
-            new = parenthesize(new)
-            new = pytree.Node(syms.power, (new,) + tuple(after))
-        if node.parent.type in (syms.comparison, syms.expr, syms.xor_expr,
-                                syms.and_expr, syms.shift_expr,
-                                syms.arith_expr, syms.term,
-                                syms.factor, syms.power):
-            new = parenthesize(new)
-        new.prefix = prefix
-        return new
diff --git a/Lib/lib2to3/fixes/fix_idioms.py b/Lib/lib2to3/fixes/fix_idioms.py
deleted file mode 100644
index 6905913d7cb79d..00000000000000
--- a/Lib/lib2to3/fixes/fix_idioms.py
+++ /dev/null
@@ -1,152 +0,0 @@
-"""Adjust some old Python 2 idioms to their modern counterparts.
-
-* Change some type comparisons to isinstance() calls:
-    type(x) == T -> isinstance(x, T)
-    type(x) is T -> isinstance(x, T)
-    type(x) != T -> not isinstance(x, T)
-    type(x) is not T -> not isinstance(x, T)
-
-* Change "while 1:" into "while True:".
-
-* Change both
-
-    v = list(EXPR)
-    v.sort()
-    foo(v)
-
-and the more general
-
-    v = EXPR
-    v.sort()
-    foo(v)
-
-into
-
-    v = sorted(EXPR)
-    foo(v)
-"""
-# Author: Jacques Frechet, Collin Winter
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Call, Comma, Name, Node, BlankLine, syms
-
-CMP = "(n='!=' | '==' | 'is' | n=comp_op< 'is' 'not' >)"
-TYPE = "power< 'type' trailer< '(' x=any ')' > >"
-
-class FixIdioms(fixer_base.BaseFix):
-    explicit = True # The user must ask for this fixer
-
-    PATTERN = r"""
-        isinstance=comparison< %s %s T=any >
-        |
-        isinstance=comparison< T=any %s %s >
-        |
-        while_stmt< 'while' while='1' ':' any+ >
-        |
-        sorted=any<
-            any*
-            simple_stmt<
-              expr_stmt< id1=any '='
-                         power< list='list' trailer< '(' (not arglist<any+>) any ')' > >
-              >
-              '\n'
-            >
-            sort=
-            simple_stmt<
-              power< id2=any
-                     trailer< '.' 'sort' > trailer< '(' ')' >
-              >
-              '\n'
-            >
-            next=any*
-        >
-        |
-        sorted=any<
-            any*
-            simple_stmt< expr_stmt< id1=any '=' expr=any > '\n' >
-            sort=
-            simple_stmt<
-              power< id2=any
-                     trailer< '.' 'sort' > trailer< '(' ')' >
-              >
-              '\n'
-            >
-            next=any*
-        >
-    """ % (TYPE, CMP, CMP, TYPE)
-
-    def match(self, node):
-        r = super(FixIdioms, self).match(node)
-        # If we've matched one of the sort/sorted subpatterns above, we
-        # want to reject matches where the initial assignment and the
-        # subsequent .sort() call involve different identifiers.
-        if r and "sorted" in r:
-            if r["id1"] == r["id2"]:
-                return r
-            return None
-        return r
-
-    def transform(self, node, results):
-        if "isinstance" in results:
-            return self.transform_isinstance(node, results)
-        elif "while" in results:
-            return self.transform_while(node, results)
-        elif "sorted" in results:
-            return self.transform_sort(node, results)
-        else:
-            raise RuntimeError("Invalid match")
-
-    def transform_isinstance(self, node, results):
-        x = results["x"].clone() # The thing inside of type()
-        T = results["T"].clone() # The type being compared against
-        x.prefix = ""
-        T.prefix = " "
-        test = Call(Name("isinstance"), [x, Comma(), T])
-        if "n" in results:
-            test.prefix = " "
-            test = Node(syms.not_test, [Name("not"), test])
-        test.prefix = node.prefix
-        return test
-
-    def transform_while(self, node, results):
-        one = results["while"]
-        one.replace(Name("True", prefix=one.prefix))
-
-    def transform_sort(self, node, results):
-        sort_stmt = results["sort"]
-        next_stmt = results["next"]
-        list_call = results.get("list")
-        simple_expr = results.get("expr")
-
-        if list_call:
-            list_call.replace(Name("sorted", prefix=list_call.prefix))
-        elif simple_expr:
-            new = simple_expr.clone()
-            new.prefix = ""
-            simple_expr.replace(Call(Name("sorted"), [new],
-                                     prefix=simple_expr.prefix))
-        else:
-            raise RuntimeError("should not have reached here")
-        sort_stmt.remove()
-
-        btwn = sort_stmt.prefix
-        # Keep any prefix lines between the sort_stmt and the list_call and
-        # shove them right after the sorted() call.
-        if "\n" in btwn:
-            if next_stmt:
-                # The new prefix should be everything from the sort_stmt's
-                # prefix up to the last newline, then the old prefix after a new
-                # line.
-                prefix_lines = (btwn.rpartition("\n")[0], next_stmt[0].prefix)
-                next_stmt[0].prefix = "\n".join(prefix_lines)
-            else:
-                assert list_call.parent
-                assert list_call.next_sibling is None
-                # Put a blank line after list_call and set its prefix.
-                end_line = BlankLine()
-                list_call.parent.append_child(end_line)
-                assert list_call.next_sibling is end_line
-                # The new prefix should be everything up to the first new line
-                # of sort_stmt's prefix.
-                end_line.prefix = btwn.rpartition("\n")[0]
diff --git a/Lib/lib2to3/fixes/fix_import.py b/Lib/lib2to3/fixes/fix_import.py
deleted file mode 100644
index 734ca294699c36..00000000000000
--- a/Lib/lib2to3/fixes/fix_import.py
+++ /dev/null
@@ -1,99 +0,0 @@
-"""Fixer for import statements.
-If spam is being imported from the local directory, this import:
-    from spam import eggs
-Becomes:
-    from .spam import eggs
-
-And this import:
-    import spam
-Becomes:
-    from . import spam
-"""
-
-# Local imports
-from .. import fixer_base
-from os.path import dirname, join, exists, sep
-from ..fixer_util import FromImport, syms, token
-
-
-def traverse_imports(names):
-    """
-    Walks over all the names imported in a dotted_as_names node.
-    """
-    pending = [names]
-    while pending:
-        node = pending.pop()
-        if node.type == token.NAME:
-            yield node.value
-        elif node.type == syms.dotted_name:
-            yield "".join([ch.value for ch in node.children])
-        elif node.type == syms.dotted_as_name:
-            pending.append(node.children[0])
-        elif node.type == syms.dotted_as_names:
-            pending.extend(node.children[::-2])
-        else:
-            raise AssertionError("unknown node type")
-
-
-class FixImport(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    import_from< 'from' imp=any 'import' ['('] any [')'] >
-    |
-    import_name< 'import' imp=any >
-    """
-
-    def start_tree(self, tree, name):
-        super(FixImport, self).start_tree(tree, name)
-        self.skip = "absolute_import" in tree.future_features
-
-    def transform(self, node, results):
-        if self.skip:
-            return
-        imp = results['imp']
-
-        if node.type == syms.import_from:
-            # Some imps are top-level (eg: 'import ham')
-            # some are first level (eg: 'import ham.eggs')
-            # some are third level (eg: 'import ham.eggs as spam')
-            # Hence, the loop
-            while not hasattr(imp, 'value'):
-                imp = imp.children[0]
-            if self.probably_a_local_import(imp.value):
-                imp.value = "." + imp.value
-                imp.changed()
-        else:
-            have_local = False
-            have_absolute = False
-            for mod_name in traverse_imports(imp):
-                if self.probably_a_local_import(mod_name):
-                    have_local = True
-                else:
-                    have_absolute = True
-            if have_absolute:
-                if have_local:
-                    # We won't handle both sibling and absolute imports in the
-                    # same statement at the moment.
-                    self.warning(node, "absolute and local imports together")
-                return
-
-            new = FromImport(".", [imp])
-            new.prefix = node.prefix
-            return new
-
-    def probably_a_local_import(self, imp_name):
-        if imp_name.startswith("."):
-            # Relative imports are certainly not local imports.
-            return False
-        imp_name = imp_name.split(".", 1)[0]
-        base_path = dirname(self.filename)
-        base_path = join(base_path, imp_name)
-        # If there is no __init__.py next to the file its not in a package
-        # so can't be a relative import.
-        if not exists(join(dirname(base_path), "__init__.py")):
-            return False
-        for ext in [".py", sep, ".pyc", ".so", ".sl", ".pyd"]:
-            if exists(base_path + ext):
-                return True
-        return False
diff --git a/Lib/lib2to3/fixes/fix_imports.py b/Lib/lib2to3/fixes/fix_imports.py
deleted file mode 100644
index aaf4f2f642efb5..00000000000000
--- a/Lib/lib2to3/fixes/fix_imports.py
+++ /dev/null
@@ -1,145 +0,0 @@
-"""Fix incompatible imports and module references."""
-# Authors: Collin Winter, Nick Edds
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name, attr_chain
-
-MAPPING = {'StringIO':  'io',
-           'cStringIO': 'io',
-           'cPickle': 'pickle',
-           '__builtin__' : 'builtins',
-           'copy_reg': 'copyreg',
-           'Queue': 'queue',
-           'SocketServer': 'socketserver',
-           'ConfigParser': 'configparser',
-           'repr': 'reprlib',
-           'FileDialog': 'tkinter.filedialog',
-           'tkFileDialog': 'tkinter.filedialog',
-           'SimpleDialog': 'tkinter.simpledialog',
-           'tkSimpleDialog': 'tkinter.simpledialog',
-           'tkColorChooser': 'tkinter.colorchooser',
-           'tkCommonDialog': 'tkinter.commondialog',
-           'Dialog': 'tkinter.dialog',
-           'Tkdnd': 'tkinter.dnd',
-           'tkFont': 'tkinter.font',
-           'tkMessageBox': 'tkinter.messagebox',
-           'ScrolledText': 'tkinter.scrolledtext',
-           'Tkconstants': 'tkinter.constants',
-           'Tix': 'tkinter.tix',
-           'ttk': 'tkinter.ttk',
-           'Tkinter': 'tkinter',
-           'markupbase': '_markupbase',
-           '_winreg': 'winreg',
-           'thread': '_thread',
-           'dummy_thread': '_dummy_thread',
-           # anydbm and whichdb are handled by fix_imports2
-           'dbhash': 'dbm.bsd',
-           'dumbdbm': 'dbm.dumb',
-           'dbm': 'dbm.ndbm',
-           'gdbm': 'dbm.gnu',
-           'xmlrpclib': 'xmlrpc.client',
-           'DocXMLRPCServer': 'xmlrpc.server',
-           'SimpleXMLRPCServer': 'xmlrpc.server',
-           'httplib': 'http.client',
-           'htmlentitydefs' : 'html.entities',
-           'HTMLParser' : 'html.parser',
-           'Cookie': 'http.cookies',
-           'cookielib': 'http.cookiejar',
-           'BaseHTTPServer': 'http.server',
-           'SimpleHTTPServer': 'http.server',
-           'CGIHTTPServer': 'http.server',
-           #'test.test_support': 'test.support',
-           'commands': 'subprocess',
-           'UserString' : 'collections',
-           'UserList' : 'collections',
-           'urlparse' : 'urllib.parse',
-           'robotparser' : 'urllib.robotparser',
-}
-
-
-def alternates(members):
-    return "(" + "|".join(map(repr, members)) + ")"
-
-
-def build_pattern(mapping=MAPPING):
-    mod_list = ' | '.join(["module_name='%s'" % key for key in mapping])
-    bare_names = alternates(mapping.keys())
-
-    yield """name_import=import_name< 'import' ((%s) |
-               multiple_imports=dotted_as_names< any* (%s) any* >) >
-          """ % (mod_list, mod_list)
-    yield """import_from< 'from' (%s) 'import' ['(']
-              ( any | import_as_name< any 'as' any > |
-                import_as_names< any* >)  [')'] >
-          """ % mod_list
-    yield """import_name< 'import' (dotted_as_name< (%s) 'as' any > |
-               multiple_imports=dotted_as_names<
-                 any* dotted_as_name< (%s) 'as' any > any* >) >
-          """ % (mod_list, mod_list)
-
-    # Find usages of module members in code e.g. thread.foo(bar)
-    yield "power< bare_with_attr=(%s) trailer<'.' any > any* >" % bare_names
-
-
-class FixImports(fixer_base.BaseFix):
-
-    BM_compatible = True
-    keep_line_order = True
-    # This is overridden in fix_imports2.
-    mapping = MAPPING
-
-    # We want to run this fixer late, so fix_import doesn't try to make stdlib
-    # renames into relative imports.
-    run_order = 6
-
-    def build_pattern(self):
-        return "|".join(build_pattern(self.mapping))
-
-    def compile_pattern(self):
-        # We override this, so MAPPING can be pragmatically altered and the
-        # changes will be reflected in PATTERN.
-        self.PATTERN = self.build_pattern()
-        super(FixImports, self).compile_pattern()
-
-    # Don't match the node if it's within another match.
-    def match(self, node):
-        match = super(FixImports, self).match
-        results = match(node)
-        if results:
-            # Module usage could be in the trailer of an attribute lookup, so we
-            # might have nested matches when "bare_with_attr" is present.
-            if "bare_with_attr" not in results and \
-                    any(match(obj) for obj in attr_chain(node, "parent")):
-                return False
-            return results
-        return False
-
-    def start_tree(self, tree, filename):
-        super(FixImports, self).start_tree(tree, filename)
-        self.replace = {}
-
-    def transform(self, node, results):
-        import_mod = results.get("module_name")
-        if import_mod:
-            mod_name = import_mod.value
-            new_name = self.mapping[mod_name]
-            import_mod.replace(Name(new_name, prefix=import_mod.prefix))
-            if "name_import" in results:
-                # If it's not a "from x import x, y" or "import x as y" import,
-                # marked its usage to be replaced.
-                self.replace[mod_name] = new_name
-            if "multiple_imports" in results:
-                # This is a nasty hack to fix multiple imports on a line (e.g.,
-                # "import StringIO, urlparse"). The problem is that I can't
-                # figure out an easy way to make a pattern recognize the keys of
-                # MAPPING randomly sprinkled in an import statement.
-                results = self.match(node)
-                if results:
-                    self.transform(node, results)
-        else:
-            # Replace usage of the module.
-            bare_name = results["bare_with_attr"][0]
-            new_name = self.replace.get(bare_name.value)
-            if new_name:
-                bare_name.replace(Name(new_name, prefix=bare_name.prefix))
diff --git a/Lib/lib2to3/fixes/fix_imports2.py b/Lib/lib2to3/fixes/fix_imports2.py
deleted file mode 100644
index 9a33c67b1dc194..00000000000000
--- a/Lib/lib2to3/fixes/fix_imports2.py
+++ /dev/null
@@ -1,16 +0,0 @@
-"""Fix incompatible imports and module references that must be fixed after
-fix_imports."""
-from . import fix_imports
-
-
-MAPPING = {
-            'whichdb': 'dbm',
-            'anydbm': 'dbm',
-          }
-
-
-class FixImports2(fix_imports.FixImports):
-
-    run_order = 7
-
-    mapping = MAPPING
diff --git a/Lib/lib2to3/fixes/fix_input.py b/Lib/lib2to3/fixes/fix_input.py
deleted file mode 100644
index 9cf9a48c471f35..00000000000000
--- a/Lib/lib2to3/fixes/fix_input.py
+++ /dev/null
@@ -1,26 +0,0 @@
-"""Fixer that changes input(...) into eval(input(...))."""
-# Author: Andre Roberge
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Call, Name
-from .. import patcomp
-
-
-context = patcomp.compile_pattern("power< 'eval' trailer< '(' any ')' > >")
-
-
-class FixInput(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-              power< 'input' args=trailer< '(' [any] ')' > >
-              """
-
-    def transform(self, node, results):
-        # If we're already wrapped in an eval() call, we're done.
-        if context.match(node.parent.parent):
-            return
-
-        new = node.clone()
-        new.prefix = ""
-        return Call(Name("eval"), [new], prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_intern.py b/Lib/lib2to3/fixes/fix_intern.py
deleted file mode 100644
index d752843092aacd..00000000000000
--- a/Lib/lib2to3/fixes/fix_intern.py
+++ /dev/null
@@ -1,39 +0,0 @@
-# Copyright 2006 Georg Brandl.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for intern().
-
-intern(s) -> sys.intern(s)"""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import ImportAndCall, touch_import
-
-
-class FixIntern(fixer_base.BaseFix):
-    BM_compatible = True
-    order = "pre"
-
-    PATTERN = """
-    power< 'intern'
-           trailer< lpar='('
-                    ( not(arglist | argument<any '=' any>) obj=any
-                      | obj=arglist<(not argument<any '=' any>) any ','> )
-                    rpar=')' >
-           after=any*
-    >
-    """
-
-    def transform(self, node, results):
-        if results:
-            # I feel like we should be able to express this logic in the
-            # PATTERN above but I don't know how to do it so...
-            obj = results['obj']
-            if obj:
-                if (obj.type == self.syms.argument and
-                    obj.children[0].value in {'**', '*'}):
-                    return  # Make no change.
-        names = ('sys', 'intern')
-        new = ImportAndCall(node, results, names)
-        touch_import(None, 'sys', node)
-        return new
diff --git a/Lib/lib2to3/fixes/fix_isinstance.py b/Lib/lib2to3/fixes/fix_isinstance.py
deleted file mode 100644
index bebb1de120424b..00000000000000
--- a/Lib/lib2to3/fixes/fix_isinstance.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# Copyright 2008 Armin Ronacher.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that cleans up a tuple argument to isinstance after the tokens
-in it were fixed.  This is mainly used to remove double occurrences of
-tokens as a leftover of the long -> int / unicode -> str conversion.
-
-eg.  isinstance(x, (int, long)) -> isinstance(x, (int, int))
-       -> isinstance(x, int)
-"""
-
-from .. import fixer_base
-from ..fixer_util import token
-
-
-class FixIsinstance(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-    power<
-        'isinstance'
-        trailer< '(' arglist< any ',' atom< '('
-            args=testlist_gexp< any+ >
-        ')' > > ')' >
-    >
-    """
-
-    run_order = 6
-
-    def transform(self, node, results):
-        names_inserted = set()
-        testlist = results["args"]
-        args = testlist.children
-        new_args = []
-        iterator = enumerate(args)
-        for idx, arg in iterator:
-            if arg.type == token.NAME and arg.value in names_inserted:
-                if idx < len(args) - 1 and args[idx + 1].type == token.COMMA:
-                    next(iterator)
-                    continue
-            else:
-                new_args.append(arg)
-                if arg.type == token.NAME:
-                    names_inserted.add(arg.value)
-        if new_args and new_args[-1].type == token.COMMA:
-            del new_args[-1]
-        if len(new_args) == 1:
-            atom = testlist.parent
-            new_args[0].prefix = atom.prefix
-            atom.replace(new_args[0])
-        else:
-            args[:] = new_args
-            node.changed()
diff --git a/Lib/lib2to3/fixes/fix_itertools.py b/Lib/lib2to3/fixes/fix_itertools.py
deleted file mode 100644
index 8e78d6c689f439..00000000000000
--- a/Lib/lib2to3/fixes/fix_itertools.py
+++ /dev/null
@@ -1,43 +0,0 @@
-""" Fixer for itertools.(imap|ifilter|izip) --> (map|filter|zip) and
-    itertools.ifilterfalse --> itertools.filterfalse (bugs 2360-2363)
-
-    imports from itertools are fixed in fix_itertools_import.py
-
-    If itertools is imported as something else (ie: import itertools as it;
-    it.izip(spam, eggs)) method calls will not get fixed.
-    """
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-class FixItertools(fixer_base.BaseFix):
-    BM_compatible = True
-    it_funcs = "('imap'|'ifilter'|'izip'|'izip_longest'|'ifilterfalse')"
-    PATTERN = """
-              power< it='itertools'
-                  trailer<
-                     dot='.' func=%(it_funcs)s > trailer< '(' [any] ')' > >
-              |
-              power< func=%(it_funcs)s trailer< '(' [any] ')' > >
-              """ %(locals())
-
-    # Needs to be run after fix_(map|zip|filter)
-    run_order = 6
-
-    def transform(self, node, results):
-        prefix = None
-        func = results['func'][0]
-        if ('it' in results and
-            func.value not in ('ifilterfalse', 'izip_longest')):
-            dot, it = (results['dot'], results['it'])
-            # Remove the 'itertools'
-            prefix = it.prefix
-            it.remove()
-            # Replace the node which contains ('.', 'function') with the
-            # function (to be consistent with the second part of the pattern)
-            dot.remove()
-            func.parent.replace(func)
-
-        prefix = prefix or func.prefix
-        func.replace(Name(func.value[1:], prefix=prefix))
diff --git a/Lib/lib2to3/fixes/fix_itertools_imports.py b/Lib/lib2to3/fixes/fix_itertools_imports.py
deleted file mode 100644
index 0ddbc7b8422991..00000000000000
--- a/Lib/lib2to3/fixes/fix_itertools_imports.py
+++ /dev/null
@@ -1,57 +0,0 @@
-""" Fixer for imports of itertools.(imap|ifilter|izip|ifilterfalse) """
-
-# Local imports
-from lib2to3 import fixer_base
-from lib2to3.fixer_util import BlankLine, syms, token
-
-
-class FixItertoolsImports(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-              import_from< 'from' 'itertools' 'import' imports=any >
-              """ %(locals())
-
-    def transform(self, node, results):
-        imports = results['imports']
-        if imports.type == syms.import_as_name or not imports.children:
-            children = [imports]
-        else:
-            children = imports.children
-        for child in children[::2]:
-            if child.type == token.NAME:
-                member = child.value
-                name_node = child
-            elif child.type == token.STAR:
-                # Just leave the import as is.
-                return
-            else:
-                assert child.type == syms.import_as_name
-                name_node = child.children[0]
-            member_name = name_node.value
-            if member_name in ('imap', 'izip', 'ifilter'):
-                child.value = None
-                child.remove()
-            elif member_name in ('ifilterfalse', 'izip_longest'):
-                node.changed()
-                name_node.value = ('filterfalse' if member_name[1] == 'f'
-                                   else 'zip_longest')
-
-        # Make sure the import statement is still sane
-        children = imports.children[:] or [imports]
-        remove_comma = True
-        for child in children:
-            if remove_comma and child.type == token.COMMA:
-                child.remove()
-            else:
-                remove_comma ^= True
-
-        while children and children[-1].type == token.COMMA:
-            children.pop().remove()
-
-        # If there are no imports left, just get rid of the entire statement
-        if (not (imports.children or getattr(imports, 'value', None)) or
-            imports.parent is None):
-            p = node.prefix
-            node = BlankLine()
-            node.prefix = p
-            return node
diff --git a/Lib/lib2to3/fixes/fix_long.py b/Lib/lib2to3/fixes/fix_long.py
deleted file mode 100644
index f227c9f4981538..00000000000000
--- a/Lib/lib2to3/fixes/fix_long.py
+++ /dev/null
@@ -1,19 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that turns 'long' into 'int' everywhere.
-"""
-
-# Local imports
-from lib2to3 import fixer_base
-from lib2to3.fixer_util import is_probably_builtin
-
-
-class FixLong(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = "'long'"
-
-    def transform(self, node, results):
-        if is_probably_builtin(node):
-            node.value = "int"
-            node.changed()
diff --git a/Lib/lib2to3/fixes/fix_map.py b/Lib/lib2to3/fixes/fix_map.py
deleted file mode 100644
index 78cf81c6f94098..00000000000000
--- a/Lib/lib2to3/fixes/fix_map.py
+++ /dev/null
@@ -1,110 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that changes map(F, ...) into list(map(F, ...)) unless there
-exists a 'from future_builtins import map' statement in the top-level
-namespace.
-
-As a special case, map(None, X) is changed into list(X).  (This is
-necessary because the semantics are changed in this case -- the new
-map(None, X) is equivalent to [(x,) for x in X].)
-
-We avoid the transformation (except for the special case mentioned
-above) if the map() call is directly contained in iter(<>), list(<>),
-tuple(<>), sorted(<>), ...join(<>), or for V in <>:.
-
-NOTE: This is still not correct if the original code was depending on
-map(F, X, Y, ...) to go on until the longest argument is exhausted,
-substituting None for missing values -- like zip(), it now stops as
-soon as the shortest argument is exhausted.
-"""
-
-# Local imports
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Name, ArgList, Call, ListComp, in_special_context
-from ..pygram import python_symbols as syms
-from ..pytree import Node
-
-
-class FixMap(fixer_base.ConditionalFix):
-    BM_compatible = True
-
-    PATTERN = """
-    map_none=power<
-        'map'
-        trailer< '(' arglist< 'None' ',' arg=any [','] > ')' >
-        [extra_trailers=trailer*]
-    >
-    |
-    map_lambda=power<
-        'map'
-        trailer<
-            '('
-            arglist<
-                lambdef< 'lambda'
-                         (fp=NAME | vfpdef< '(' fp=NAME ')'> ) ':' xp=any
-                >
-                ','
-                it=any
-            >
-            ')'
-        >
-        [extra_trailers=trailer*]
-    >
-    |
-    power<
-        'map' args=trailer< '(' [any] ')' >
-        [extra_trailers=trailer*]
-    >
-    """
-
-    skip_on = 'future_builtins.map'
-
-    def transform(self, node, results):
-        if self.should_skip(node):
-            return
-
-        trailers = []
-        if 'extra_trailers' in results:
-            for t in results['extra_trailers']:
-                trailers.append(t.clone())
-
-        if node.parent.type == syms.simple_stmt:
-            self.warning(node, "You should use a for loop here")
-            new = node.clone()
-            new.prefix = ""
-            new = Call(Name("list"), [new])
-        elif "map_lambda" in results:
-            new = ListComp(results["xp"].clone(),
-                           results["fp"].clone(),
-                           results["it"].clone())
-            new = Node(syms.power, [new] + trailers, prefix="")
-
-        else:
-            if "map_none" in results:
-                new = results["arg"].clone()
-                new.prefix = ""
-            else:
-                if "args" in results:
-                    args = results["args"]
-                    if args.type == syms.trailer and \
-                       args.children[1].type == syms.arglist and \
-                       args.children[1].children[0].type == token.NAME and \
-                       args.children[1].children[0].value == "None":
-                        self.warning(node, "cannot convert map(None, ...) "
-                                     "with multiple arguments because map() "
-                                     "now truncates to the shortest sequence")
-                        return
-
-                    new = Node(syms.power, [Name("map"), args.clone()])
-                    new.prefix = ""
-
-                if in_special_context(node):
-                    return None
-
-            new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
-            new.prefix = ""
-
-        new.prefix = node.prefix
-        return new
diff --git a/Lib/lib2to3/fixes/fix_metaclass.py b/Lib/lib2to3/fixes/fix_metaclass.py
deleted file mode 100644
index fe547b2228072a..00000000000000
--- a/Lib/lib2to3/fixes/fix_metaclass.py
+++ /dev/null
@@ -1,228 +0,0 @@
-"""Fixer for __metaclass__ = X -> (metaclass=X) methods.
-
-   The various forms of classef (inherits nothing, inherits once, inherits
-   many) don't parse the same in the CST so we look at ALL classes for
-   a __metaclass__ and if we find one normalize the inherits to all be
-   an arglist.
-
-   For one-liner classes ('class X: pass') there is no indent/dedent so
-   we normalize those into having a suite.
-
-   Moving the __metaclass__ into the classdef can also cause the class
-   body to be empty so there is some special casing for that as well.
-
-   This fixer also tries very hard to keep original indenting and spacing
-   in all those corner cases.
-
-"""
-# Author: Jack Diederich
-
-# Local imports
-from .. import fixer_base
-from ..pygram import token
-from ..fixer_util import syms, Node, Leaf
-
-
-def has_metaclass(parent):
-    """ we have to check the cls_node without changing it.
-        There are two possibilities:
-          1)  clsdef => suite => simple_stmt => expr_stmt => Leaf('__meta')
-          2)  clsdef => simple_stmt => expr_stmt => Leaf('__meta')
-    """
-    for node in parent.children:
-        if node.type == syms.suite:
-            return has_metaclass(node)
-        elif node.type == syms.simple_stmt and node.children:
-            expr_node = node.children[0]
-            if expr_node.type == syms.expr_stmt and expr_node.children:
-                left_side = expr_node.children[0]
-                if isinstance(left_side, Leaf) and \
-                        left_side.value == '__metaclass__':
-                    return True
-    return False
-
-
-def fixup_parse_tree(cls_node):
-    """ one-line classes don't get a suite in the parse tree so we add
-        one to normalize the tree
-    """
-    for node in cls_node.children:
-        if node.type == syms.suite:
-            # already in the preferred format, do nothing
-            return
-
-    # !%@#! one-liners have no suite node, we have to fake one up
-    for i, node in enumerate(cls_node.children):
-        if node.type == token.COLON:
-            break
-    else:
-        raise ValueError("No class suite and no ':'!")
-
-    # move everything into a suite node
-    suite = Node(syms.suite, [])
-    while cls_node.children[i+1:]:
-        move_node = cls_node.children[i+1]
-        suite.append_child(move_node.clone())
-        move_node.remove()
-    cls_node.append_child(suite)
-    node = suite
-
-
-def fixup_simple_stmt(parent, i, stmt_node):
-    """ if there is a semi-colon all the parts count as part of the same
-        simple_stmt.  We just want the __metaclass__ part so we move
-        everything after the semi-colon into its own simple_stmt node
-    """
-    for semi_ind, node in enumerate(stmt_node.children):
-        if node.type == token.SEMI: # *sigh*
-            break
-    else:
-        return
-
-    node.remove() # kill the semicolon
-    new_expr = Node(syms.expr_stmt, [])
-    new_stmt = Node(syms.simple_stmt, [new_expr])
-    while stmt_node.children[semi_ind:]:
-        move_node = stmt_node.children[semi_ind]
-        new_expr.append_child(move_node.clone())
-        move_node.remove()
-    parent.insert_child(i, new_stmt)
-    new_leaf1 = new_stmt.children[0].children[0]
-    old_leaf1 = stmt_node.children[0].children[0]
-    new_leaf1.prefix = old_leaf1.prefix
-
-
-def remove_trailing_newline(node):
-    if node.children and node.children[-1].type == token.NEWLINE:
-        node.children[-1].remove()
-
-
-def find_metas(cls_node):
-    # find the suite node (Mmm, sweet nodes)
-    for node in cls_node.children:
-        if node.type == syms.suite:
-            break
-    else:
-        raise ValueError("No class suite!")
-
-    # look for simple_stmt[ expr_stmt[ Leaf('__metaclass__') ] ]
-    for i, simple_node in list(enumerate(node.children)):
-        if simple_node.type == syms.simple_stmt and simple_node.children:
-            expr_node = simple_node.children[0]
-            if expr_node.type == syms.expr_stmt and expr_node.children:
-                # Check if the expr_node is a simple assignment.
-                left_node = expr_node.children[0]
-                if isinstance(left_node, Leaf) and \
-                        left_node.value == '__metaclass__':
-                    # We found an assignment to __metaclass__.
-                    fixup_simple_stmt(node, i, simple_node)
-                    remove_trailing_newline(simple_node)
-                    yield (node, i, simple_node)
-
-
-def fixup_indent(suite):
-    """ If an INDENT is followed by a thing with a prefix then nuke the prefix
-        Otherwise we get in trouble when removing __metaclass__ at suite start
-    """
-    kids = suite.children[::-1]
-    # find the first indent
-    while kids:
-        node = kids.pop()
-        if node.type == token.INDENT:
-            break
-
-    # find the first Leaf
-    while kids:
-        node = kids.pop()
-        if isinstance(node, Leaf) and node.type != token.DEDENT:
-            if node.prefix:
-                node.prefix = ''
-            return
-        else:
-            kids.extend(node.children[::-1])
-
-
-class FixMetaclass(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-    classdef<any*>
-    """
-
-    def transform(self, node, results):
-        if not has_metaclass(node):
-            return
-
-        fixup_parse_tree(node)
-
-        # find metaclasses, keep the last one
-        last_metaclass = None
-        for suite, i, stmt in find_metas(node):
-            last_metaclass = stmt
-            stmt.remove()
-
-        text_type = node.children[0].type # always Leaf(nnn, 'class')
-
-        # figure out what kind of classdef we have
-        if len(node.children) == 7:
-            # Node(classdef, ['class', 'name', '(', arglist, ')', ':', suite])
-            #                 0        1       2    3        4    5    6
-            if node.children[3].type == syms.arglist:
-                arglist = node.children[3]
-            # Node(classdef, ['class', 'name', '(', 'Parent', ')', ':', suite])
-            else:
-                parent = node.children[3].clone()
-                arglist = Node(syms.arglist, [parent])
-                node.set_child(3, arglist)
-        elif len(node.children) == 6:
-            # Node(classdef, ['class', 'name', '(',  ')', ':', suite])
-            #                 0        1       2     3    4    5
-            arglist = Node(syms.arglist, [])
-            node.insert_child(3, arglist)
-        elif len(node.children) == 4:
-            # Node(classdef, ['class', 'name', ':', suite])
-            #                 0        1       2    3
-            arglist = Node(syms.arglist, [])
-            node.insert_child(2, Leaf(token.RPAR, ')'))
-            node.insert_child(2, arglist)
-            node.insert_child(2, Leaf(token.LPAR, '('))
-        else:
-            raise ValueError("Unexpected class definition")
-
-        # now stick the metaclass in the arglist
-        meta_txt = last_metaclass.children[0].children[0]
-        meta_txt.value = 'metaclass'
-        orig_meta_prefix = meta_txt.prefix
-
-        if arglist.children:
-            arglist.append_child(Leaf(token.COMMA, ','))
-            meta_txt.prefix = ' '
-        else:
-            meta_txt.prefix = ''
-
-        # compact the expression "metaclass = Meta" -> "metaclass=Meta"
-        expr_stmt = last_metaclass.children[0]
-        assert expr_stmt.type == syms.expr_stmt
-        expr_stmt.children[1].prefix = ''
-        expr_stmt.children[2].prefix = ''
-
-        arglist.append_child(last_metaclass)
-
-        fixup_indent(suite)
-
-        # check for empty suite
-        if not suite.children:
-            # one-liner that was just __metaclass_
-            suite.remove()
-            pass_leaf = Leaf(text_type, 'pass')
-            pass_leaf.prefix = orig_meta_prefix
-            node.append_child(pass_leaf)
-            node.append_child(Leaf(token.NEWLINE, '\n'))
-
-        elif len(suite.children) > 1 and \
-                 (suite.children[-2].type == token.INDENT and
-                  suite.children[-1].type == token.DEDENT):
-            # there was only one line in the class body and it was __metaclass__
-            pass_leaf = Leaf(text_type, 'pass')
-            suite.insert_child(-1, pass_leaf)
-            suite.insert_child(-1, Leaf(token.NEWLINE, '\n'))
diff --git a/Lib/lib2to3/fixes/fix_methodattrs.py b/Lib/lib2to3/fixes/fix_methodattrs.py
deleted file mode 100644
index 7f9004f00e6e8f..00000000000000
--- a/Lib/lib2to3/fixes/fix_methodattrs.py
+++ /dev/null
@@ -1,24 +0,0 @@
-"""Fix bound method attributes (method.im_? -> method.__?__).
-"""
-# Author: Christian Heimes
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-MAP = {
-    "im_func" : "__func__",
-    "im_self" : "__self__",
-    "im_class" : "__self__.__class__"
-    }
-
-class FixMethodattrs(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-    power< any+ trailer< '.' attr=('im_func' | 'im_self' | 'im_class') > any* >
-    """
-
-    def transform(self, node, results):
-        attr = results["attr"][0]
-        new = MAP[attr.value]
-        attr.replace(Name(new, prefix=attr.prefix))
diff --git a/Lib/lib2to3/fixes/fix_ne.py b/Lib/lib2to3/fixes/fix_ne.py
deleted file mode 100644
index e3ee10f4a63e0c..00000000000000
--- a/Lib/lib2to3/fixes/fix_ne.py
+++ /dev/null
@@ -1,23 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that turns <> into !=."""
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-
-
-class FixNe(fixer_base.BaseFix):
-    # This is so simple that we don't need the pattern compiler.
-
-    _accept_type = token.NOTEQUAL
-
-    def match(self, node):
-        # Override
-        return node.value == "<>"
-
-    def transform(self, node, results):
-        new = pytree.Leaf(token.NOTEQUAL, "!=", prefix=node.prefix)
-        return new
diff --git a/Lib/lib2to3/fixes/fix_next.py b/Lib/lib2to3/fixes/fix_next.py
deleted file mode 100644
index 9f6305e1d49dc5..00000000000000
--- a/Lib/lib2to3/fixes/fix_next.py
+++ /dev/null
@@ -1,103 +0,0 @@
-"""Fixer for it.next() -> next(it), per PEP 3114."""
-# Author: Collin Winter
-
-# Things that currently aren't covered:
-#   - listcomp "next" names aren't warned
-#   - "with" statement targets aren't checked
-
-# Local imports
-from ..pgen2 import token
-from ..pygram import python_symbols as syms
-from .. import fixer_base
-from ..fixer_util import Name, Call, find_binding
-
-bind_warning = "Calls to builtin next() possibly shadowed by global binding"
-
-
-class FixNext(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-    power< base=any+ trailer< '.' attr='next' > trailer< '(' ')' > >
-    |
-    power< head=any+ trailer< '.' attr='next' > not trailer< '(' ')' > >
-    |
-    classdef< 'class' any+ ':'
-              suite< any*
-                     funcdef< 'def'
-                              name='next'
-                              parameters< '(' NAME ')' > any+ >
-                     any* > >
-    |
-    global=global_stmt< 'global' any* 'next' any* >
-    """
-
-    order = "pre" # Pre-order tree traversal
-
-    def start_tree(self, tree, filename):
-        super(FixNext, self).start_tree(tree, filename)
-
-        n = find_binding('next', tree)
-        if n:
-            self.warning(n, bind_warning)
-            self.shadowed_next = True
-        else:
-            self.shadowed_next = False
-
-    def transform(self, node, results):
-        assert results
-
-        base = results.get("base")
-        attr = results.get("attr")
-        name = results.get("name")
-
-        if base:
-            if self.shadowed_next:
-                attr.replace(Name("__next__", prefix=attr.prefix))
-            else:
-                base = [n.clone() for n in base]
-                base[0].prefix = ""
-                node.replace(Call(Name("next", prefix=node.prefix), base))
-        elif name:
-            n = Name("__next__", prefix=name.prefix)
-            name.replace(n)
-        elif attr:
-            # We don't do this transformation if we're assigning to "x.next".
-            # Unfortunately, it doesn't seem possible to do this in PATTERN,
-            #  so it's being done here.
-            if is_assign_target(node):
-                head = results["head"]
-                if "".join([str(n) for n in head]).strip() == '__builtin__':
-                    self.warning(node, bind_warning)
-                return
-            attr.replace(Name("__next__"))
-        elif "global" in results:
-            self.warning(node, bind_warning)
-            self.shadowed_next = True
-
-
-### The following functions help test if node is part of an assignment
-###  target.
-
-def is_assign_target(node):
-    assign = find_assign(node)
-    if assign is None:
-        return False
-
-    for child in assign.children:
-        if child.type == token.EQUAL:
-            return False
-        elif is_subtree(child, node):
-            return True
-    return False
-
-def find_assign(node):
-    if node.type == syms.expr_stmt:
-        return node
-    if node.type == syms.simple_stmt or node.parent is None:
-        return None
-    return find_assign(node.parent)
-
-def is_subtree(root, node):
-    if root == node:
-        return True
-    return any(is_subtree(c, node) for c in root.children)
diff --git a/Lib/lib2to3/fixes/fix_nonzero.py b/Lib/lib2to3/fixes/fix_nonzero.py
deleted file mode 100644
index c2295969a7728f..00000000000000
--- a/Lib/lib2to3/fixes/fix_nonzero.py
+++ /dev/null
@@ -1,21 +0,0 @@
-"""Fixer for __nonzero__ -> __bool__ methods."""
-# Author: Collin Winter
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-class FixNonzero(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-    classdef< 'class' any+ ':'
-              suite< any*
-                     funcdef< 'def' name='__nonzero__'
-                              parameters< '(' NAME ')' > any+ >
-                     any* > >
-    """
-
-    def transform(self, node, results):
-        name = results["name"]
-        new = Name("__bool__", prefix=name.prefix)
-        name.replace(new)
diff --git a/Lib/lib2to3/fixes/fix_numliterals.py b/Lib/lib2to3/fixes/fix_numliterals.py
deleted file mode 100644
index 79207d4aa368ae..00000000000000
--- a/Lib/lib2to3/fixes/fix_numliterals.py
+++ /dev/null
@@ -1,28 +0,0 @@
-"""Fixer that turns 1L into 1, 0755 into 0o755.
-"""
-# Copyright 2007 Georg Brandl.
-# Licensed to PSF under a Contributor Agreement.
-
-# Local imports
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Number
-
-
-class FixNumliterals(fixer_base.BaseFix):
-    # This is so simple that we don't need the pattern compiler.
-
-    _accept_type = token.NUMBER
-
-    def match(self, node):
-        # Override
-        return (node.value.startswith("0") or node.value[-1] in "Ll")
-
-    def transform(self, node, results):
-        val = node.value
-        if val[-1] in 'Ll':
-            val = val[:-1]
-        elif val.startswith('0') and val.isdigit() and len(set(val)) > 1:
-            val = "0o" + val[1:]
-
-        return Number(val, prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_operator.py b/Lib/lib2to3/fixes/fix_operator.py
deleted file mode 100644
index d303cd2018befb..00000000000000
--- a/Lib/lib2to3/fixes/fix_operator.py
+++ /dev/null
@@ -1,97 +0,0 @@
-"""Fixer for operator functions.
-
-operator.isCallable(obj)       -> callable(obj)
-operator.sequenceIncludes(obj) -> operator.contains(obj)
-operator.isSequenceType(obj)   -> isinstance(obj, collections.abc.Sequence)
-operator.isMappingType(obj)    -> isinstance(obj, collections.abc.Mapping)
-operator.isNumberType(obj)     -> isinstance(obj, numbers.Number)
-operator.repeat(obj, n)        -> operator.mul(obj, n)
-operator.irepeat(obj, n)       -> operator.imul(obj, n)
-"""
-
-import collections.abc
-
-# Local imports
-from lib2to3 import fixer_base
-from lib2to3.fixer_util import Call, Name, String, touch_import
-
-
-def invocation(s):
-    def dec(f):
-        f.invocation = s
-        return f
-    return dec
-
-
-class FixOperator(fixer_base.BaseFix):
-    BM_compatible = True
-    order = "pre"
-
-    methods = """
-              method=('isCallable'|'sequenceIncludes'
-                     |'isSequenceType'|'isMappingType'|'isNumberType'
-                     |'repeat'|'irepeat')
-              """
-    obj = "'(' obj=any ')'"
-    PATTERN = """
-              power< module='operator'
-                trailer< '.' %(methods)s > trailer< %(obj)s > >
-              |
-              power< %(methods)s trailer< %(obj)s > >
-              """ % dict(methods=methods, obj=obj)
-
-    def transform(self, node, results):
-        method = self._check_method(node, results)
-        if method is not None:
-            return method(node, results)
-
-    @invocation("operator.contains(%s)")
-    def _sequenceIncludes(self, node, results):
-        return self._handle_rename(node, results, "contains")
-
-    @invocation("callable(%s)")
-    def _isCallable(self, node, results):
-        obj = results["obj"]
-        return Call(Name("callable"), [obj.clone()], prefix=node.prefix)
-
-    @invocation("operator.mul(%s)")
-    def _repeat(self, node, results):
-        return self._handle_rename(node, results, "mul")
-
-    @invocation("operator.imul(%s)")
-    def _irepeat(self, node, results):
-        return self._handle_rename(node, results, "imul")
-
-    @invocation("isinstance(%s, collections.abc.Sequence)")
-    def _isSequenceType(self, node, results):
-        return self._handle_type2abc(node, results, "collections.abc", "Sequence")
-
-    @invocation("isinstance(%s, collections.abc.Mapping)")
-    def _isMappingType(self, node, results):
-        return self._handle_type2abc(node, results, "collections.abc", "Mapping")
-
-    @invocation("isinstance(%s, numbers.Number)")
-    def _isNumberType(self, node, results):
-        return self._handle_type2abc(node, results, "numbers", "Number")
-
-    def _handle_rename(self, node, results, name):
-        method = results["method"][0]
-        method.value = name
-        method.changed()
-
-    def _handle_type2abc(self, node, results, module, abc):
-        touch_import(None, module, node)
-        obj = results["obj"]
-        args = [obj.clone(), String(", " + ".".join([module, abc]))]
-        return Call(Name("isinstance"), args, prefix=node.prefix)
-
-    def _check_method(self, node, results):
-        method = getattr(self, "_" + results["method"][0].value)
-        if isinstance(method, collections.abc.Callable):
-            if "module" in results:
-                return method
-            else:
-                sub = (str(results["obj"]),)
-                invocation_str = method.invocation % sub
-                self.warning(node, "You should use '%s' here." % invocation_str)
-        return None
diff --git a/Lib/lib2to3/fixes/fix_paren.py b/Lib/lib2to3/fixes/fix_paren.py
deleted file mode 100644
index df3da5f5232c9c..00000000000000
--- a/Lib/lib2to3/fixes/fix_paren.py
+++ /dev/null
@@ -1,44 +0,0 @@
-"""Fixer that adds parentheses where they are required
-
-This converts ``[x for x in 1, 2]`` to ``[x for x in (1, 2)]``."""
-
-# By Taek Joo Kim and Benjamin Peterson
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import LParen, RParen
-
-# XXX This doesn't support nested for loops like [x for x in 1, 2 for x in 1, 2]
-class FixParen(fixer_base.BaseFix):
-    BM_compatible = True
-
-    PATTERN = """
-        atom< ('[' | '(')
-            (listmaker< any
-                comp_for<
-                    'for' NAME 'in'
-                    target=testlist_safe< any (',' any)+ [',']
-                     >
-                    [any]
-                >
-            >
-            |
-            testlist_gexp< any
-                comp_for<
-                    'for' NAME 'in'
-                    target=testlist_safe< any (',' any)+ [',']
-                     >
-                    [any]
-                >
-            >)
-        (']' | ')') >
-    """
-
-    def transform(self, node, results):
-        target = results["target"]
-
-        lparen = LParen()
-        lparen.prefix = target.prefix
-        target.prefix = "" # Make it hug the parentheses
-        target.insert_child(0, lparen)
-        target.append_child(RParen())
diff --git a/Lib/lib2to3/fixes/fix_print.py b/Lib/lib2to3/fixes/fix_print.py
deleted file mode 100644
index 8780322265f6fe..00000000000000
--- a/Lib/lib2to3/fixes/fix_print.py
+++ /dev/null
@@ -1,87 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for print.
-
-Change:
-    'print'          into 'print()'
-    'print ...'      into 'print(...)'
-    'print ... ,'    into 'print(..., end=" ")'
-    'print >>x, ...' into 'print(..., file=x)'
-
-No changes are applied if print_function is imported from __future__
-
-"""
-
-# Local imports
-from .. import patcomp
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Name, Call, Comma, String
-
-
-parend_expr = patcomp.compile_pattern(
-              """atom< '(' [atom|STRING|NAME] ')' >"""
-              )
-
-
-class FixPrint(fixer_base.BaseFix):
-
-    BM_compatible = True
-
-    PATTERN = """
-              simple_stmt< any* bare='print' any* > | print_stmt
-              """
-
-    def transform(self, node, results):
-        assert results
-
-        bare_print = results.get("bare")
-
-        if bare_print:
-            # Special-case print all by itself
-            bare_print.replace(Call(Name("print"), [],
-                               prefix=bare_print.prefix))
-            return
-        assert node.children[0] == Name("print")
-        args = node.children[1:]
-        if len(args) == 1 and parend_expr.match(args[0]):
-            # We don't want to keep sticking parens around an
-            # already-parenthesised expression.
-            return
-
-        sep = end = file = None
-        if args and args[-1] == Comma():
-            args = args[:-1]
-            end = " "
-        if args and args[0] == pytree.Leaf(token.RIGHTSHIFT, ">>"):
-            assert len(args) >= 2
-            file = args[1].clone()
-            args = args[3:] # Strip a possible comma after the file expression
-        # Now synthesize a print(args, sep=..., end=..., file=...) node.
-        l_args = [arg.clone() for arg in args]
-        if l_args:
-            l_args[0].prefix = ""
-        if sep is not None or end is not None or file is not None:
-            if sep is not None:
-                self.add_kwarg(l_args, "sep", String(repr(sep)))
-            if end is not None:
-                self.add_kwarg(l_args, "end", String(repr(end)))
-            if file is not None:
-                self.add_kwarg(l_args, "file", file)
-        n_stmt = Call(Name("print"), l_args)
-        n_stmt.prefix = node.prefix
-        return n_stmt
-
-    def add_kwarg(self, l_nodes, s_kwd, n_expr):
-        # XXX All this prefix-setting may lose comments (though rarely)
-        n_expr.prefix = ""
-        n_argument = pytree.Node(self.syms.argument,
-                                 (Name(s_kwd),
-                                  pytree.Leaf(token.EQUAL, "="),
-                                  n_expr))
-        if l_nodes:
-            l_nodes.append(Comma())
-            n_argument.prefix = " "
-        l_nodes.append(n_argument)
diff --git a/Lib/lib2to3/fixes/fix_raise.py b/Lib/lib2to3/fixes/fix_raise.py
deleted file mode 100644
index 05aa21e74a30ff..00000000000000
--- a/Lib/lib2to3/fixes/fix_raise.py
+++ /dev/null
@@ -1,90 +0,0 @@
-"""Fixer for 'raise E, V, T'
-
-raise         -> raise
-raise E       -> raise E
-raise E, V    -> raise E(V)
-raise E, V, T -> raise E(V).with_traceback(T)
-raise E, None, T -> raise E.with_traceback(T)
-
-raise (((E, E'), E''), E'''), V -> raise E(V)
-raise "foo", V, T               -> warns about string exceptions
-
-
-CAVEATS:
-1) "raise E, V" will be incorrectly translated if V is an exception
-   instance. The correct Python 3 idiom is
-
-        raise E from V
-
-   but since we can't detect instance-hood by syntax alone and since
-   any client code would have to be changed as well, we don't automate
-   this.
-"""
-# Author: Collin Winter
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Name, Call, Attr, ArgList, is_tuple
-
-class FixRaise(fixer_base.BaseFix):
-
-    BM_compatible = True
-    PATTERN = """
-    raise_stmt< 'raise' exc=any [',' val=any [',' tb=any]] >
-    """
-
-    def transform(self, node, results):
-        syms = self.syms
-
-        exc = results["exc"].clone()
-        if exc.type == token.STRING:
-            msg = "Python 3 does not support string exceptions"
-            self.cannot_convert(node, msg)
-            return
-
-        # Python 2 supports
-        #  raise ((((E1, E2), E3), E4), E5), V
-        # as a synonym for
-        #  raise E1, V
-        # Since Python 3 will not support this, we recurse down any tuple
-        # literals, always taking the first element.
-        if is_tuple(exc):
-            while is_tuple(exc):
-                # exc.children[1:-1] is the unparenthesized tuple
-                # exc.children[1].children[0] is the first element of the tuple
-                exc = exc.children[1].children[0].clone()
-            exc.prefix = " "
-
-        if "val" not in results:
-            # One-argument raise
-            new = pytree.Node(syms.raise_stmt, [Name("raise"), exc])
-            new.prefix = node.prefix
-            return new
-
-        val = results["val"].clone()
-        if is_tuple(val):
-            args = [c.clone() for c in val.children[1:-1]]
-        else:
-            val.prefix = ""
-            args = [val]
-
-        if "tb" in results:
-            tb = results["tb"].clone()
-            tb.prefix = ""
-
-            e = exc
-            # If there's a traceback and None is passed as the value, then don't
-            # add a call, since the user probably just wants to add a
-            # traceback. See issue #9661.
-            if val.type != token.NAME or val.value != "None":
-                e = Call(exc, args)
-            with_tb = Attr(e, Name('with_traceback')) + [ArgList([tb])]
-            new = pytree.Node(syms.simple_stmt, [Name("raise")] + with_tb)
-            new.prefix = node.prefix
-            return new
-        else:
-            return pytree.Node(syms.raise_stmt,
-                               [Name("raise"), Call(exc, args)],
-                               prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_raw_input.py b/Lib/lib2to3/fixes/fix_raw_input.py
deleted file mode 100644
index a51bb694b9e01e..00000000000000
--- a/Lib/lib2to3/fixes/fix_raw_input.py
+++ /dev/null
@@ -1,17 +0,0 @@
-"""Fixer that changes raw_input(...) into input(...)."""
-# Author: Andre Roberge
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-class FixRawInput(fixer_base.BaseFix):
-
-    BM_compatible = True
-    PATTERN = """
-              power< name='raw_input' trailer< '(' [any] ')' > any* >
-              """
-
-    def transform(self, node, results):
-        name = results["name"]
-        name.replace(Name("input", prefix=name.prefix))
diff --git a/Lib/lib2to3/fixes/fix_reduce.py b/Lib/lib2to3/fixes/fix_reduce.py
deleted file mode 100644
index 00e5aa1c33d482..00000000000000
--- a/Lib/lib2to3/fixes/fix_reduce.py
+++ /dev/null
@@ -1,35 +0,0 @@
-# Copyright 2008 Armin Ronacher.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for reduce().
-
-Makes sure reduce() is imported from the functools module if reduce is
-used in that module.
-"""
-
-from lib2to3 import fixer_base
-from lib2to3.fixer_util import touch_import
-
-
-
-class FixReduce(fixer_base.BaseFix):
-
-    BM_compatible = True
-    order = "pre"
-
-    PATTERN = """
-    power< 'reduce'
-        trailer< '('
-            arglist< (
-                (not(argument<any '=' any>) any ','
-                 not(argument<any '=' any>) any) |
-                (not(argument<any '=' any>) any ','
-                 not(argument<any '=' any>) any ','
-                 not(argument<any '=' any>) any)
-            ) >
-        ')' >
-    >
-    """
-
-    def transform(self, node, results):
-        touch_import('functools', 'reduce', node)
diff --git a/Lib/lib2to3/fixes/fix_reload.py b/Lib/lib2to3/fixes/fix_reload.py
deleted file mode 100644
index b30841131c51f9..00000000000000
--- a/Lib/lib2to3/fixes/fix_reload.py
+++ /dev/null
@@ -1,36 +0,0 @@
-"""Fixer for reload().
-
-reload(s) -> importlib.reload(s)"""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import ImportAndCall, touch_import
-
-
-class FixReload(fixer_base.BaseFix):
-    BM_compatible = True
-    order = "pre"
-
-    PATTERN = """
-    power< 'reload'
-           trailer< lpar='('
-                    ( not(arglist | argument<any '=' any>) obj=any
-                      | obj=arglist<(not argument<any '=' any>) any ','> )
-                    rpar=')' >
-           after=any*
-    >
-    """
-
-    def transform(self, node, results):
-        if results:
-            # I feel like we should be able to express this logic in the
-            # PATTERN above but I don't know how to do it so...
-            obj = results['obj']
-            if obj:
-                if (obj.type == self.syms.argument and
-                    obj.children[0].value in {'**', '*'}):
-                    return  # Make no change.
-        names = ('importlib', 'reload')
-        new = ImportAndCall(node, results, names)
-        touch_import(None, 'importlib', node)
-        return new
diff --git a/Lib/lib2to3/fixes/fix_renames.py b/Lib/lib2to3/fixes/fix_renames.py
deleted file mode 100644
index c0e3705ab7be19..00000000000000
--- a/Lib/lib2to3/fixes/fix_renames.py
+++ /dev/null
@@ -1,70 +0,0 @@
-"""Fix incompatible renames
-
-Fixes:
-  * sys.maxint -> sys.maxsize
-"""
-# Author: Christian Heimes
-# based on Collin Winter's fix_import
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name, attr_chain
-
-MAPPING = {"sys":  {"maxint" : "maxsize"},
-          }
-LOOKUP = {}
-
-def alternates(members):
-    return "(" + "|".join(map(repr, members)) + ")"
-
-
-def build_pattern():
-    #bare = set()
-    for module, replace in list(MAPPING.items()):
-        for old_attr, new_attr in list(replace.items()):
-            LOOKUP[(module, old_attr)] = new_attr
-            #bare.add(module)
-            #bare.add(old_attr)
-            #yield """
-            #      import_name< 'import' (module=%r
-            #          | dotted_as_names< any* module=%r any* >) >
-            #      """ % (module, module)
-            yield """
-                  import_from< 'from' module_name=%r 'import'
-                      ( attr_name=%r | import_as_name< attr_name=%r 'as' any >) >
-                  """ % (module, old_attr, old_attr)
-            yield """
-                  power< module_name=%r trailer< '.' attr_name=%r > any* >
-                  """ % (module, old_attr)
-    #yield """bare_name=%s""" % alternates(bare)
-
-
-class FixRenames(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = "|".join(build_pattern())
-
-    order = "pre" # Pre-order tree traversal
-
-    # Don't match the node if it's within another match
-    def match(self, node):
-        match = super(FixRenames, self).match
-        results = match(node)
-        if results:
-            if any(match(obj) for obj in attr_chain(node, "parent")):
-                return False
-            return results
-        return False
-
-    #def start_tree(self, tree, filename):
-    #    super(FixRenames, self).start_tree(tree, filename)
-    #    self.replace = {}
-
-    def transform(self, node, results):
-        mod_name = results.get("module_name")
-        attr_name = results.get("attr_name")
-        #bare_name = results.get("bare_name")
-        #import_mod = results.get("module")
-
-        if mod_name and attr_name:
-            new_attr = LOOKUP[(mod_name.value, attr_name.value)]
-            attr_name.replace(Name(new_attr, prefix=attr_name.prefix))
diff --git a/Lib/lib2to3/fixes/fix_repr.py b/Lib/lib2to3/fixes/fix_repr.py
deleted file mode 100644
index 1150bb8b9db2af..00000000000000
--- a/Lib/lib2to3/fixes/fix_repr.py
+++ /dev/null
@@ -1,23 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that transforms `xyzzy` into repr(xyzzy)."""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Call, Name, parenthesize
-
-
-class FixRepr(fixer_base.BaseFix):
-
-    BM_compatible = True
-    PATTERN = """
-              atom < '`' expr=any '`' >
-              """
-
-    def transform(self, node, results):
-        expr = results["expr"].clone()
-
-        if expr.type == self.syms.testlist1:
-            expr = parenthesize(expr)
-        return Call(Name("repr"), [expr], prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_set_literal.py b/Lib/lib2to3/fixes/fix_set_literal.py
deleted file mode 100644
index 762550cf73dc0b..00000000000000
--- a/Lib/lib2to3/fixes/fix_set_literal.py
+++ /dev/null
@@ -1,53 +0,0 @@
-"""
-Optional fixer to transform set() calls to set literals.
-"""
-
-# Author: Benjamin Peterson
-
-from lib2to3 import fixer_base, pytree
-from lib2to3.fixer_util import token, syms
-
-
-
-class FixSetLiteral(fixer_base.BaseFix):
-
-    BM_compatible = True
-    explicit = True
-
-    PATTERN = """power< 'set' trailer< '('
-                     (atom=atom< '[' (items=listmaker< any ((',' any)* [',']) >
-                                |
-                                single=any) ']' >
-                     |
-                     atom< '(' items=testlist_gexp< any ((',' any)* [',']) > ')' >
-                     )
-                     ')' > >
-              """
-
-    def transform(self, node, results):
-        single = results.get("single")
-        if single:
-            # Make a fake listmaker
-            fake = pytree.Node(syms.listmaker, [single.clone()])
-            single.replace(fake)
-            items = fake
-        else:
-            items = results["items"]
-
-        # Build the contents of the literal
-        literal = [pytree.Leaf(token.LBRACE, "{")]
-        literal.extend(n.clone() for n in items.children)
-        literal.append(pytree.Leaf(token.RBRACE, "}"))
-        # Set the prefix of the right brace to that of the ')' or ']'
-        literal[-1].prefix = items.next_sibling.prefix
-        maker = pytree.Node(syms.dictsetmaker, literal)
-        maker.prefix = node.prefix
-
-        # If the original was a one tuple, we need to remove the extra comma.
-        if len(maker.children) == 4:
-            n = maker.children[2]
-            n.remove()
-            maker.children[-1].prefix = n.prefix
-
-        # Finally, replace the set call with our shiny new literal.
-        return maker
diff --git a/Lib/lib2to3/fixes/fix_standarderror.py b/Lib/lib2to3/fixes/fix_standarderror.py
deleted file mode 100644
index dc742167e6e9d4..00000000000000
--- a/Lib/lib2to3/fixes/fix_standarderror.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for StandardError -> Exception."""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-
-class FixStandarderror(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-              'StandardError'
-              """
-
-    def transform(self, node, results):
-        return Name("Exception", prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_sys_exc.py b/Lib/lib2to3/fixes/fix_sys_exc.py
deleted file mode 100644
index f6039690374ab2..00000000000000
--- a/Lib/lib2to3/fixes/fix_sys_exc.py
+++ /dev/null
@@ -1,30 +0,0 @@
-"""Fixer for sys.exc_{type, value, traceback}
-
-sys.exc_type -> sys.exc_info()[0]
-sys.exc_value -> sys.exc_info()[1]
-sys.exc_traceback -> sys.exc_info()[2]
-"""
-
-# By Jeff Balogh and Benjamin Peterson
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Attr, Call, Name, Number, Subscript, Node, syms
-
-class FixSysExc(fixer_base.BaseFix):
-    # This order matches the ordering of sys.exc_info().
-    exc_info = ["exc_type", "exc_value", "exc_traceback"]
-    BM_compatible = True
-    PATTERN = """
-              power< 'sys' trailer< dot='.' attribute=(%s) > >
-              """ % '|'.join("'%s'" % e for e in exc_info)
-
-    def transform(self, node, results):
-        sys_attr = results["attribute"][0]
-        index = Number(self.exc_info.index(sys_attr.value))
-
-        call = Call(Name("exc_info"), prefix=sys_attr.prefix)
-        attr = Attr(Name("sys"), call)
-        attr[1].children[0].prefix = results["dot"].prefix
-        attr.append(Subscript(index))
-        return Node(syms.power, attr, prefix=node.prefix)
diff --git a/Lib/lib2to3/fixes/fix_throw.py b/Lib/lib2to3/fixes/fix_throw.py
deleted file mode 100644
index aac29169b4e98e..00000000000000
--- a/Lib/lib2to3/fixes/fix_throw.py
+++ /dev/null
@@ -1,56 +0,0 @@
-"""Fixer for generator.throw(E, V, T).
-
-g.throw(E)       -> g.throw(E)
-g.throw(E, V)    -> g.throw(E(V))
-g.throw(E, V, T) -> g.throw(E(V).with_traceback(T))
-
-g.throw("foo"[, V[, T]]) will warn about string exceptions."""
-# Author: Collin Winter
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Name, Call, ArgList, Attr, is_tuple
-
-class FixThrow(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-    power< any trailer< '.' 'throw' >
-           trailer< '(' args=arglist< exc=any ',' val=any [',' tb=any] > ')' >
-    >
-    |
-    power< any trailer< '.' 'throw' > trailer< '(' exc=any ')' > >
-    """
-
-    def transform(self, node, results):
-        syms = self.syms
-
-        exc = results["exc"].clone()
-        if exc.type is token.STRING:
-            self.cannot_convert(node, "Python 3 does not support string exceptions")
-            return
-
-        # Leave "g.throw(E)" alone
-        val = results.get("val")
-        if val is None:
-            return
-
-        val = val.clone()
-        if is_tuple(val):
-            args = [c.clone() for c in val.children[1:-1]]
-        else:
-            val.prefix = ""
-            args = [val]
-
-        throw_args = results["args"]
-
-        if "tb" in results:
-            tb = results["tb"].clone()
-            tb.prefix = ""
-
-            e = Call(exc, args)
-            with_tb = Attr(e, Name('with_traceback')) + [ArgList([tb])]
-            throw_args.replace(pytree.Node(syms.power, with_tb))
-        else:
-            throw_args.replace(Call(exc, args))
diff --git a/Lib/lib2to3/fixes/fix_tuple_params.py b/Lib/lib2to3/fixes/fix_tuple_params.py
deleted file mode 100644
index cad755ffdbefb3..00000000000000
--- a/Lib/lib2to3/fixes/fix_tuple_params.py
+++ /dev/null
@@ -1,175 +0,0 @@
-"""Fixer for function definitions with tuple parameters.
-
-def func(((a, b), c), d):
-    ...
-
-    ->
-
-def func(x, d):
-    ((a, b), c) = x
-    ...
-
-It will also support lambdas:
-
-    lambda (x, y): x + y -> lambda t: t[0] + t[1]
-
-    # The parens are a syntax error in Python 3
-    lambda (x): x + y -> lambda x: x + y
-"""
-# Author: Collin Winter
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Assign, Name, Newline, Number, Subscript, syms
-
-def is_docstring(stmt):
-    return isinstance(stmt, pytree.Node) and \
-           stmt.children[0].type == token.STRING
-
-class FixTupleParams(fixer_base.BaseFix):
-    run_order = 4 #use a lower order since lambda is part of other
-                  #patterns
-    BM_compatible = True
-
-    PATTERN = """
-              funcdef< 'def' any parameters< '(' args=any ')' >
-                       ['->' any] ':' suite=any+ >
-              |
-              lambda=
-              lambdef< 'lambda' args=vfpdef< '(' inner=any ')' >
-                       ':' body=any
-              >
-              """
-
-    def transform(self, node, results):
-        if "lambda" in results:
-            return self.transform_lambda(node, results)
-
-        new_lines = []
-        suite = results["suite"]
-        args = results["args"]
-        # This crap is so "def foo(...): x = 5; y = 7" is handled correctly.
-        # TODO(cwinter): suite-cleanup
-        if suite[0].children[1].type == token.INDENT:
-            start = 2
-            indent = suite[0].children[1].value
-            end = Newline()
-        else:
-            start = 0
-            indent = "; "
-            end = pytree.Leaf(token.INDENT, "")
-
-        # We need access to self for new_name(), and making this a method
-        #  doesn't feel right. Closing over self and new_lines makes the
-        #  code below cleaner.
-        def handle_tuple(tuple_arg, add_prefix=False):
-            n = Name(self.new_name())
-            arg = tuple_arg.clone()
-            arg.prefix = ""
-            stmt = Assign(arg, n.clone())
-            if add_prefix:
-                n.prefix = " "
-            tuple_arg.replace(n)
-            new_lines.append(pytree.Node(syms.simple_stmt,
-                                         [stmt, end.clone()]))
-
-        if args.type == syms.tfpdef:
-            handle_tuple(args)
-        elif args.type == syms.typedargslist:
-            for i, arg in enumerate(args.children):
-                if arg.type == syms.tfpdef:
-                    # Without add_prefix, the emitted code is correct,
-                    #  just ugly.
-                    handle_tuple(arg, add_prefix=(i > 0))
-
-        if not new_lines:
-            return
-
-        # This isn't strictly necessary, but it plays nicely with other fixers.
-        # TODO(cwinter) get rid of this when children becomes a smart list
-        for line in new_lines:
-            line.parent = suite[0]
-
-        # TODO(cwinter) suite-cleanup
-        after = start
-        if start == 0:
-            new_lines[0].prefix = " "
-        elif is_docstring(suite[0].children[start]):
-            new_lines[0].prefix = indent
-            after = start + 1
-
-        for line in new_lines:
-            line.parent = suite[0]
-        suite[0].children[after:after] = new_lines
-        for i in range(after+1, after+len(new_lines)+1):
-            suite[0].children[i].prefix = indent
-        suite[0].changed()
-
-    def transform_lambda(self, node, results):
-        args = results["args"]
-        body = results["body"]
-        inner = simplify_args(results["inner"])
-
-        # Replace lambda ((((x)))): x  with lambda x: x
-        if inner.type == token.NAME:
-            inner = inner.clone()
-            inner.prefix = " "
-            args.replace(inner)
-            return
-
-        params = find_params(args)
-        to_index = map_to_index(params)
-        tup_name = self.new_name(tuple_name(params))
-
-        new_param = Name(tup_name, prefix=" ")
-        args.replace(new_param.clone())
-        for n in body.post_order():
-            if n.type == token.NAME and n.value in to_index:
-                subscripts = [c.clone() for c in to_index[n.value]]
-                new = pytree.Node(syms.power,
-                                  [new_param.clone()] + subscripts)
-                new.prefix = n.prefix
-                n.replace(new)
-
-
-### Helper functions for transform_lambda()
-
-def simplify_args(node):
-    if node.type in (syms.vfplist, token.NAME):
-        return node
-    elif node.type == syms.vfpdef:
-        # These look like vfpdef< '(' x ')' > where x is NAME
-        # or another vfpdef instance (leading to recursion).
-        while node.type == syms.vfpdef:
-            node = node.children[1]
-        return node
-    raise RuntimeError("Received unexpected node %s" % node)
-
-def find_params(node):
-    if node.type == syms.vfpdef:
-        return find_params(node.children[1])
-    elif node.type == token.NAME:
-        return node.value
-    return [find_params(c) for c in node.children if c.type != token.COMMA]
-
-def map_to_index(param_list, prefix=[], d=None):
-    if d is None:
-        d = {}
-    for i, obj in enumerate(param_list):
-        trailer = [Subscript(Number(str(i)))]
-        if isinstance(obj, list):
-            map_to_index(obj, trailer, d=d)
-        else:
-            d[obj] = prefix + trailer
-    return d
-
-def tuple_name(param_list):
-    l = []
-    for obj in param_list:
-        if isinstance(obj, list):
-            l.append(tuple_name(obj))
-        else:
-            l.append(obj)
-    return "_".join(l)
diff --git a/Lib/lib2to3/fixes/fix_types.py b/Lib/lib2to3/fixes/fix_types.py
deleted file mode 100644
index 67bf51f2f5b85a..00000000000000
--- a/Lib/lib2to3/fixes/fix_types.py
+++ /dev/null
@@ -1,61 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer for removing uses of the types module.
-
-These work for only the known names in the types module.  The forms above
-can include types. or not.  ie, It is assumed the module is imported either as:
-
-    import types
-    from types import ... # either * or specific types
-
-The import statements are not modified.
-
-There should be another fixer that handles at least the following constants:
-
-   type([]) -> list
-   type(()) -> tuple
-   type('') -> str
-
-"""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-_TYPE_MAPPING = {
-        'BooleanType' : 'bool',
-        'BufferType' : 'memoryview',
-        'ClassType' : 'type',
-        'ComplexType' : 'complex',
-        'DictType': 'dict',
-        'DictionaryType' : 'dict',
-        'EllipsisType' : 'type(Ellipsis)',
-        #'FileType' : 'io.IOBase',
-        'FloatType': 'float',
-        'IntType': 'int',
-        'ListType': 'list',
-        'LongType': 'int',
-        'ObjectType' : 'object',
-        'NoneType': 'type(None)',
-        'NotImplementedType' : 'type(NotImplemented)',
-        'SliceType' : 'slice',
-        'StringType': 'bytes', # XXX ?
-        'StringTypes' : '(str,)', # XXX ?
-        'TupleType': 'tuple',
-        'TypeType' : 'type',
-        'UnicodeType': 'str',
-        'XRangeType' : 'range',
-    }
-
-_pats = ["power< 'types' trailer< '.' name='%s' > >" % t for t in _TYPE_MAPPING]
-
-class FixTypes(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = '|'.join(_pats)
-
-    def transform(self, node, results):
-        new_value = _TYPE_MAPPING.get(results["name"].value)
-        if new_value:
-            return Name(new_value, prefix=node.prefix)
-        return None
diff --git a/Lib/lib2to3/fixes/fix_unicode.py b/Lib/lib2to3/fixes/fix_unicode.py
deleted file mode 100644
index c7982c2b97c3e1..00000000000000
--- a/Lib/lib2to3/fixes/fix_unicode.py
+++ /dev/null
@@ -1,42 +0,0 @@
-r"""Fixer for unicode.
-
-* Changes unicode to str and unichr to chr.
-
-* If "...\u..." is not unicode literal change it into "...\\u...".
-
-* Change u"..." into "...".
-
-"""
-
-from ..pgen2 import token
-from .. import fixer_base
-
-_mapping = {"unichr" : "chr", "unicode" : "str"}
-
-class FixUnicode(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = "STRING | 'unicode' | 'unichr'"
-
-    def start_tree(self, tree, filename):
-        super(FixUnicode, self).start_tree(tree, filename)
-        self.unicode_literals = 'unicode_literals' in tree.future_features
-
-    def transform(self, node, results):
-        if node.type == token.NAME:
-            new = node.clone()
-            new.value = _mapping[node.value]
-            return new
-        elif node.type == token.STRING:
-            val = node.value
-            if not self.unicode_literals and val[0] in '\'"' and '\\' in val:
-                val = r'\\'.join([
-                    v.replace('\\u', r'\\u').replace('\\U', r'\\U')
-                    for v in val.split(r'\\')
-                ])
-            if val[0] in 'uU':
-                val = val[1:]
-            if val == node.value:
-                return node
-            new = node.clone()
-            new.value = val
-            return new
diff --git a/Lib/lib2to3/fixes/fix_urllib.py b/Lib/lib2to3/fixes/fix_urllib.py
deleted file mode 100644
index ab892bc52494c2..00000000000000
--- a/Lib/lib2to3/fixes/fix_urllib.py
+++ /dev/null
@@ -1,196 +0,0 @@
-"""Fix changes imports of urllib which are now incompatible.
-   This is rather similar to fix_imports, but because of the more
-   complex nature of the fixing for urllib, it has its own fixer.
-"""
-# Author: Nick Edds
-
-# Local imports
-from lib2to3.fixes.fix_imports import alternates, FixImports
-from lib2to3.fixer_util import (Name, Comma, FromImport, Newline,
-                                find_indentation, Node, syms)
-
-MAPPING = {"urllib":  [
-                ("urllib.request",
-                    ["URLopener", "FancyURLopener", "urlretrieve",
-                     "_urlopener", "urlopen", "urlcleanup",
-                     "pathname2url", "url2pathname", "getproxies"]),
-                ("urllib.parse",
-                    ["quote", "quote_plus", "unquote", "unquote_plus",
-                     "urlencode", "splitattr", "splithost", "splitnport",
-                     "splitpasswd", "splitport", "splitquery", "splittag",
-                     "splittype", "splituser", "splitvalue", ]),
-                ("urllib.error",
-                    ["ContentTooShortError"])],
-           "urllib2" : [
-                ("urllib.request",
-                    ["urlopen", "install_opener", "build_opener",
-                     "Request", "OpenerDirector", "BaseHandler",
-                     "HTTPDefaultErrorHandler", "HTTPRedirectHandler",
-                     "HTTPCookieProcessor", "ProxyHandler",
-                     "HTTPPasswordMgr",
-                     "HTTPPasswordMgrWithDefaultRealm",
-                     "AbstractBasicAuthHandler",
-                     "HTTPBasicAuthHandler", "ProxyBasicAuthHandler",
-                     "AbstractDigestAuthHandler",
-                     "HTTPDigestAuthHandler", "ProxyDigestAuthHandler",
-                     "HTTPHandler", "HTTPSHandler", "FileHandler",
-                     "FTPHandler", "CacheFTPHandler",
-                     "UnknownHandler"]),
-                ("urllib.error",
-                    ["URLError", "HTTPError"]),
-           ]
-}
-
-# Duplicate the url parsing functions for urllib2.
-MAPPING["urllib2"].append(MAPPING["urllib"][1])
-
-
-def build_pattern():
-    bare = set()
-    for old_module, changes in MAPPING.items():
-        for change in changes:
-            new_module, members = change
-            members = alternates(members)
-            yield """import_name< 'import' (module=%r
-                                  | dotted_as_names< any* module=%r any* >) >
-                  """ % (old_module, old_module)
-            yield """import_from< 'from' mod_member=%r 'import'
-                       ( member=%s | import_as_name< member=%s 'as' any > |
-                         import_as_names< members=any*  >) >
-                  """ % (old_module, members, members)
-            yield """import_from< 'from' module_star=%r 'import' star='*' >
-                  """ % old_module
-            yield """import_name< 'import'
-                                  dotted_as_name< module_as=%r 'as' any > >
-                  """ % old_module
-            # bare_with_attr has a special significance for FixImports.match().
-            yield """power< bare_with_attr=%r trailer< '.' member=%s > any* >
-                  """ % (old_module, members)
-
-
-class FixUrllib(FixImports):
-
-    def build_pattern(self):
-        return "|".join(build_pattern())
-
-    def transform_import(self, node, results):
-        """Transform for the basic import case. Replaces the old
-           import name with a comma separated list of its
-           replacements.
-        """
-        import_mod = results.get("module")
-        pref = import_mod.prefix
-
-        names = []
-
-        # create a Node list of the replacement modules
-        for name in MAPPING[import_mod.value][:-1]:
-            names.extend([Name(name[0], prefix=pref), Comma()])
-        names.append(Name(MAPPING[import_mod.value][-1][0], prefix=pref))
-        import_mod.replace(names)
-
-    def transform_member(self, node, results):
-        """Transform for imports of specific module elements. Replaces
-           the module to be imported from with the appropriate new
-           module.
-        """
-        mod_member = results.get("mod_member")
-        pref = mod_member.prefix
-        member = results.get("member")
-
-        # Simple case with only a single member being imported
-        if member:
-            # this may be a list of length one, or just a node
-            if isinstance(member, list):
-                member = member[0]
-            new_name = None
-            for change in MAPPING[mod_member.value]:
-                if member.value in change[1]:
-                    new_name = change[0]
-                    break
-            if new_name:
-                mod_member.replace(Name(new_name, prefix=pref))
-            else:
-                self.cannot_convert(node, "This is an invalid module element")
-
-        # Multiple members being imported
-        else:
-            # a dictionary for replacements, order matters
-            modules = []
-            mod_dict = {}
-            members = results["members"]
-            for member in members:
-                # we only care about the actual members
-                if member.type == syms.import_as_name:
-                    as_name = member.children[2].value
-                    member_name = member.children[0].value
-                else:
-                    member_name = member.value
-                    as_name = None
-                if member_name != ",":
-                    for change in MAPPING[mod_member.value]:
-                        if member_name in change[1]:
-                            if change[0] not in mod_dict:
-                                modules.append(change[0])
-                            mod_dict.setdefault(change[0], []).append(member)
-
-            new_nodes = []
-            indentation = find_indentation(node)
-            first = True
-            def handle_name(name, prefix):
-                if name.type == syms.import_as_name:
-                    kids = [Name(name.children[0].value, prefix=prefix),
-                            name.children[1].clone(),
-                            name.children[2].clone()]
-                    return [Node(syms.import_as_name, kids)]
-                return [Name(name.value, prefix=prefix)]
-            for module in modules:
-                elts = mod_dict[module]
-                names = []
-                for elt in elts[:-1]:
-                    names.extend(handle_name(elt, pref))
-                    names.append(Comma())
-                names.extend(handle_name(elts[-1], pref))
-                new = FromImport(module, names)
-                if not first or node.parent.prefix.endswith(indentation):
-                    new.prefix = indentation
-                new_nodes.append(new)
-                first = False
-            if new_nodes:
-                nodes = []
-                for new_node in new_nodes[:-1]:
-                    nodes.extend([new_node, Newline()])
-                nodes.append(new_nodes[-1])
-                node.replace(nodes)
-            else:
-                self.cannot_convert(node, "All module elements are invalid")
-
-    def transform_dot(self, node, results):
-        """Transform for calls to module members in code."""
-        module_dot = results.get("bare_with_attr")
-        member = results.get("member")
-        new_name = None
-        if isinstance(member, list):
-            member = member[0]
-        for change in MAPPING[module_dot.value]:
-            if member.value in change[1]:
-                new_name = change[0]
-                break
-        if new_name:
-            module_dot.replace(Name(new_name,
-                                    prefix=module_dot.prefix))
-        else:
-            self.cannot_convert(node, "This is an invalid module element")
-
-    def transform(self, node, results):
-        if results.get("module"):
-            self.transform_import(node, results)
-        elif results.get("mod_member"):
-            self.transform_member(node, results)
-        elif results.get("bare_with_attr"):
-            self.transform_dot(node, results)
-        # Renaming and star imports are not supported for these modules.
-        elif results.get("module_star"):
-            self.cannot_convert(node, "Cannot handle star imports.")
-        elif results.get("module_as"):
-            self.cannot_convert(node, "This module is now multiple modules")
diff --git a/Lib/lib2to3/fixes/fix_ws_comma.py b/Lib/lib2to3/fixes/fix_ws_comma.py
deleted file mode 100644
index a54a376c472afb..00000000000000
--- a/Lib/lib2to3/fixes/fix_ws_comma.py
+++ /dev/null
@@ -1,39 +0,0 @@
-"""Fixer that changes 'a ,b' into 'a, b'.
-
-This also changes '{a :b}' into '{a: b}', but does not touch other
-uses of colons.  It does not touch other uses of whitespace.
-
-"""
-
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-
-class FixWsComma(fixer_base.BaseFix):
-
-    explicit = True # The user must ask for this fixers
-
-    PATTERN = """
-    any<(not(',') any)+ ',' ((not(',') any)+ ',')* [not(',') any]>
-    """
-
-    COMMA = pytree.Leaf(token.COMMA, ",")
-    COLON = pytree.Leaf(token.COLON, ":")
-    SEPS = (COMMA, COLON)
-
-    def transform(self, node, results):
-        new = node.clone()
-        comma = False
-        for child in new.children:
-            if child in self.SEPS:
-                prefix = child.prefix
-                if prefix.isspace() and "\n" not in prefix:
-                    child.prefix = ""
-                comma = True
-            else:
-                if comma:
-                    prefix = child.prefix
-                    if not prefix:
-                        child.prefix = " "
-                comma = False
-        return new
diff --git a/Lib/lib2to3/fixes/fix_xrange.py b/Lib/lib2to3/fixes/fix_xrange.py
deleted file mode 100644
index 1e491e166a3f1c..00000000000000
--- a/Lib/lib2to3/fixes/fix_xrange.py
+++ /dev/null
@@ -1,73 +0,0 @@
-# Copyright 2007 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Fixer that changes xrange(...) into range(...)."""
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name, Call, consuming_calls
-from .. import patcomp
-
-
-class FixXrange(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-              power<
-                 (name='range'|name='xrange') trailer< '(' args=any ')' >
-              rest=any* >
-              """
-
-    def start_tree(self, tree, filename):
-        super(FixXrange, self).start_tree(tree, filename)
-        self.transformed_xranges = set()
-
-    def finish_tree(self, tree, filename):
-        self.transformed_xranges = None
-
-    def transform(self, node, results):
-        name = results["name"]
-        if name.value == "xrange":
-            return self.transform_xrange(node, results)
-        elif name.value == "range":
-            return self.transform_range(node, results)
-        else:
-            raise ValueError(repr(name))
-
-    def transform_xrange(self, node, results):
-        name = results["name"]
-        name.replace(Name("range", prefix=name.prefix))
-        # This prevents the new range call from being wrapped in a list later.
-        self.transformed_xranges.add(id(node))
-
-    def transform_range(self, node, results):
-        if (id(node) not in self.transformed_xranges and
-            not self.in_special_context(node)):
-            range_call = Call(Name("range"), [results["args"].clone()])
-            # Encase the range call in list().
-            list_call = Call(Name("list"), [range_call],
-                             prefix=node.prefix)
-            # Put things that were after the range() call after the list call.
-            for n in results["rest"]:
-                list_call.append_child(n)
-            return list_call
-
-    P1 = "power< func=NAME trailer< '(' node=any ')' > any* >"
-    p1 = patcomp.compile_pattern(P1)
-
-    P2 = """for_stmt< 'for' any 'in' node=any ':' any* >
-            | comp_for< 'for' any 'in' node=any any* >
-            | comparison< any 'in' node=any any*>
-         """
-    p2 = patcomp.compile_pattern(P2)
-
-    def in_special_context(self, node):
-        if node.parent is None:
-            return False
-        results = {}
-        if (node.parent.parent is not None and
-               self.p1.match(node.parent.parent, results) and
-               results["node"] is node):
-            # list(d.keys()) -> list(d.keys()), etc.
-            return results["func"].value in consuming_calls
-        # for ... in d.iterkeys() -> for ... in d.keys(), etc.
-        return self.p2.match(node.parent, results) and results["node"] is node
diff --git a/Lib/lib2to3/fixes/fix_xreadlines.py b/Lib/lib2to3/fixes/fix_xreadlines.py
deleted file mode 100644
index 3e3f71ab045573..00000000000000
--- a/Lib/lib2to3/fixes/fix_xreadlines.py
+++ /dev/null
@@ -1,25 +0,0 @@
-"""Fix "for x in f.xreadlines()" -> "for x in f".
-
-This fixer will also convert g(f.xreadlines) into g(f.__iter__)."""
-# Author: Collin Winter
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-
-class FixXreadlines(fixer_base.BaseFix):
-    BM_compatible = True
-    PATTERN = """
-    power< call=any+ trailer< '.' 'xreadlines' > trailer< '(' ')' > >
-    |
-    power< any+ trailer< '.' no_call='xreadlines' > >
-    """
-
-    def transform(self, node, results):
-        no_call = results.get("no_call")
-
-        if no_call:
-            no_call.replace(Name("__iter__", prefix=no_call.prefix))
-        else:
-            node.replace([x.clone() for x in results["call"]])
diff --git a/Lib/lib2to3/fixes/fix_zip.py b/Lib/lib2to3/fixes/fix_zip.py
deleted file mode 100644
index 52c28df6aab411..00000000000000
--- a/Lib/lib2to3/fixes/fix_zip.py
+++ /dev/null
@@ -1,46 +0,0 @@
-"""
-Fixer that changes zip(seq0, seq1, ...) into list(zip(seq0, seq1, ...)
-unless there exists a 'from future_builtins import zip' statement in the
-top-level namespace.
-
-We avoid the transformation if the zip() call is directly contained in
-iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:.
-"""
-
-# Local imports
-from .. import fixer_base
-from ..pytree import Node
-from ..pygram import python_symbols as syms
-from ..fixer_util import Name, ArgList, in_special_context
-
-
-class FixZip(fixer_base.ConditionalFix):
-
-    BM_compatible = True
-    PATTERN = """
-    power< 'zip' args=trailer< '(' [any] ')' > [trailers=trailer*]
-    >
-    """
-
-    skip_on = "future_builtins.zip"
-
-    def transform(self, node, results):
-        if self.should_skip(node):
-            return
-
-        if in_special_context(node):
-            return None
-
-        args = results['args'].clone()
-        args.prefix = ""
-
-        trailers = []
-        if 'trailers' in results:
-            trailers = [n.clone() for n in results['trailers']]
-            for n in trailers:
-                n.prefix = ""
-
-        new = Node(syms.power, [Name("zip"), args], prefix="")
-        new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
-        new.prefix = node.prefix
-        return new
diff --git a/Lib/lib2to3/main.py b/Lib/lib2to3/main.py
deleted file mode 100644
index f2849fd6be3fd9..00000000000000
--- a/Lib/lib2to3/main.py
+++ /dev/null
@@ -1,273 +0,0 @@
-"""
-Main program for 2to3.
-"""
-
-from __future__ import with_statement, print_function
-
-import sys
-import os
-import difflib
-import logging
-import shutil
-import optparse
-
-from . import refactor
-
-
-def diff_texts(a, b, filename):
-    """Return a unified diff of two strings."""
-    a = a.splitlines()
-    b = b.splitlines()
-    return difflib.unified_diff(a, b, filename, filename,
-                                "(original)", "(refactored)",
-                                lineterm="")
-
-
-class StdoutRefactoringTool(refactor.MultiprocessRefactoringTool):
-    """
-    A refactoring tool that can avoid overwriting its input files.
-    Prints output to stdout.
-
-    Output files can optionally be written to a different directory and or
-    have an extra file suffix appended to their name for use in situations
-    where you do not want to replace the input files.
-    """
-
-    def __init__(self, fixers, options, explicit, nobackups, show_diffs,
-                 input_base_dir='', output_dir='', append_suffix=''):
-        """
-        Args:
-            fixers: A list of fixers to import.
-            options: A dict with RefactoringTool configuration.
-            explicit: A list of fixers to run even if they are explicit.
-            nobackups: If true no backup '.bak' files will be created for those
-                files that are being refactored.
-            show_diffs: Should diffs of the refactoring be printed to stdout?
-            input_base_dir: The base directory for all input files.  This class
-                will strip this path prefix off of filenames before substituting
-                it with output_dir.  Only meaningful if output_dir is supplied.
-                All files processed by refactor() must start with this path.
-            output_dir: If supplied, all converted files will be written into
-                this directory tree instead of input_base_dir.
-            append_suffix: If supplied, all files output by this tool will have
-                this appended to their filename.  Useful for changing .py to
-                .py3 for example by passing append_suffix='3'.
-        """
-        self.nobackups = nobackups
-        self.show_diffs = show_diffs
-        if input_base_dir and not input_base_dir.endswith(os.sep):
-            input_base_dir += os.sep
-        self._input_base_dir = input_base_dir
-        self._output_dir = output_dir
-        self._append_suffix = append_suffix
-        super(StdoutRefactoringTool, self).__init__(fixers, options, explicit)
-
-    def log_error(self, msg, *args, **kwargs):
-        self.errors.append((msg, args, kwargs))
-        self.logger.error(msg, *args, **kwargs)
-
-    def write_file(self, new_text, filename, old_text, encoding):
-        orig_filename = filename
-        if self._output_dir:
-            if filename.startswith(self._input_base_dir):
-                filename = os.path.join(self._output_dir,
-                                        filename[len(self._input_base_dir):])
-            else:
-                raise ValueError('filename %s does not start with the '
-                                 'input_base_dir %s' % (
-                                         filename, self._input_base_dir))
-        if self._append_suffix:
-            filename += self._append_suffix
-        if orig_filename != filename:
-            output_dir = os.path.dirname(filename)
-            if not os.path.isdir(output_dir) and output_dir:
-                os.makedirs(output_dir)
-            self.log_message('Writing converted %s to %s.', orig_filename,
-                             filename)
-        if not self.nobackups:
-            # Make backup
-            backup = filename + ".bak"
-            if os.path.lexists(backup):
-                try:
-                    os.remove(backup)
-                except OSError:
-                    self.log_message("Can't remove backup %s", backup)
-            try:
-                os.rename(filename, backup)
-            except OSError:
-                self.log_message("Can't rename %s to %s", filename, backup)
-        # Actually write the new file
-        write = super(StdoutRefactoringTool, self).write_file
-        write(new_text, filename, old_text, encoding)
-        if not self.nobackups:
-            shutil.copymode(backup, filename)
-        if orig_filename != filename:
-            # Preserve the file mode in the new output directory.
-            shutil.copymode(orig_filename, filename)
-
-    def print_output(self, old, new, filename, equal):
-        if equal:
-            self.log_message("No changes to %s", filename)
-        else:
-            self.log_message("Refactored %s", filename)
-            if self.show_diffs:
-                diff_lines = diff_texts(old, new, filename)
-                try:
-                    if self.output_lock is not None:
-                        with self.output_lock:
-                            for line in diff_lines:
-                                print(line)
-                            sys.stdout.flush()
-                    else:
-                        for line in diff_lines:
-                            print(line)
-                except UnicodeEncodeError:
-                    warn("couldn't encode %s's diff for your terminal" %
-                         (filename,))
-                    return
-
-def warn(msg):
-    print("WARNING: %s" % (msg,), file=sys.stderr)
-
-
-def main(fixer_pkg, args=None):
-    """Main program.
-
-    Args:
-        fixer_pkg: the name of a package where the fixers are located.
-        args: optional; a list of command line arguments. If omitted,
-              sys.argv[1:] is used.
-
-    Returns a suggested exit status (0, 1, 2).
-    """
-    # Set up option parser
-    parser = optparse.OptionParser(usage="2to3 [options] file|dir ...")
-    parser.add_option("-d", "--doctests_only", action="store_true",
-                      help="Fix up doctests only")
-    parser.add_option("-f", "--fix", action="append", default=[],
-                      help="Each FIX specifies a transformation; default: all")
-    parser.add_option("-j", "--processes", action="store", default=1,
-                      type="int", help="Run 2to3 concurrently")
-    parser.add_option("-x", "--nofix", action="append", default=[],
-                      help="Prevent a transformation from being run")
-    parser.add_option("-l", "--list-fixes", action="store_true",
-                      help="List available transformations")
-    parser.add_option("-p", "--print-function", action="store_true",
-                      help="Modify the grammar so that print() is a function")
-    parser.add_option("-e", "--exec-function", action="store_true",
-                      help="Modify the grammar so that exec() is a function")
-    parser.add_option("-v", "--verbose", action="store_true",
-                      help="More verbose logging")
-    parser.add_option("--no-diffs", action="store_true",
-                      help="Don't show diffs of the refactoring")
-    parser.add_option("-w", "--write", action="store_true",
-                      help="Write back modified files")
-    parser.add_option("-n", "--nobackups", action="store_true", default=False,
-                      help="Don't write backups for modified files")
-    parser.add_option("-o", "--output-dir", action="store", type="str",
-                      default="", help="Put output files in this directory "
-                      "instead of overwriting the input files.  Requires -n.")
-    parser.add_option("-W", "--write-unchanged-files", action="store_true",
-                      help="Also write files even if no changes were required"
-                      " (useful with --output-dir); implies -w.")
-    parser.add_option("--add-suffix", action="store", type="str", default="",
-                      help="Append this string to all output filenames."
-                      " Requires -n if non-empty.  "
-                      "ex: --add-suffix='3' will generate .py3 files.")
-
-    # Parse command line arguments
-    refactor_stdin = False
-    flags = {}
-    options, args = parser.parse_args(args)
-    if options.write_unchanged_files:
-        flags["write_unchanged_files"] = True
-        if not options.write:
-            warn("--write-unchanged-files/-W implies -w.")
-        options.write = True
-    # If we allowed these, the original files would be renamed to backup names
-    # but not replaced.
-    if options.output_dir and not options.nobackups:
-        parser.error("Can't use --output-dir/-o without -n.")
-    if options.add_suffix and not options.nobackups:
-        parser.error("Can't use --add-suffix without -n.")
-
-    if not options.write and options.no_diffs:
-        warn("not writing files and not printing diffs; that's not very useful")
-    if not options.write and options.nobackups:
-        parser.error("Can't use -n without -w")
-    if options.list_fixes:
-        print("Available transformations for the -f/--fix option:")
-        for fixname in refactor.get_all_fix_names(fixer_pkg):
-            print(fixname)
-        if not args:
-            return 0
-    if not args:
-        print("At least one file or directory argument required.", file=sys.stderr)
-        print("Use --help to show usage.", file=sys.stderr)
-        return 2
-    if "-" in args:
-        refactor_stdin = True
-        if options.write:
-            print("Can't write to stdin.", file=sys.stderr)
-            return 2
-    if options.print_function:
-        flags["print_function"] = True
-
-    if options.exec_function:
-        flags["exec_function"] = True
-
-    # Set up logging handler
-    level = logging.DEBUG if options.verbose else logging.INFO
-    logging.basicConfig(format='%(name)s: %(message)s', level=level)
-    logger = logging.getLogger('lib2to3.main')
-
-    # Initialize the refactoring tool
-    avail_fixes = set(refactor.get_fixers_from_package(fixer_pkg))
-    unwanted_fixes = set(fixer_pkg + ".fix_" + fix for fix in options.nofix)
-    explicit = set()
-    if options.fix:
-        all_present = False
-        for fix in options.fix:
-            if fix == "all":
-                all_present = True
-            else:
-                explicit.add(fixer_pkg + ".fix_" + fix)
-        requested = avail_fixes.union(explicit) if all_present else explicit
-    else:
-        requested = avail_fixes.union(explicit)
-    fixer_names = requested.difference(unwanted_fixes)
-    input_base_dir = os.path.commonprefix(args)
-    if (input_base_dir and not input_base_dir.endswith(os.sep)
-        and not os.path.isdir(input_base_dir)):
-        # One or more similar names were passed, their directory is the base.
-        # os.path.commonprefix() is ignorant of path elements, this corrects
-        # for that weird API.
-        input_base_dir = os.path.dirname(input_base_dir)
-    if options.output_dir:
-        input_base_dir = input_base_dir.rstrip(os.sep)
-        logger.info('Output in %r will mirror the input directory %r layout.',
-                    options.output_dir, input_base_dir)
-    rt = StdoutRefactoringTool(
-            sorted(fixer_names), flags, sorted(explicit),
-            options.nobackups, not options.no_diffs,
-            input_base_dir=input_base_dir,
-            output_dir=options.output_dir,
-            append_suffix=options.add_suffix)
-
-    # Refactor all files and directories passed as arguments
-    if not rt.errors:
-        if refactor_stdin:
-            rt.refactor_stdin()
-        else:
-            try:
-                rt.refactor(args, options.write, options.doctests_only,
-                            options.processes)
-            except refactor.MultiprocessingUnsupported:
-                assert options.processes > 1
-                print("Sorry, -j isn't supported on this platform.",
-                      file=sys.stderr)
-                return 1
-        rt.summarize()
-
-    # Return error status (0 if rt.errors is zero)
-    return int(bool(rt.errors))
diff --git a/Lib/lib2to3/patcomp.py b/Lib/lib2to3/patcomp.py
deleted file mode 100644
index f57f4954b26ce7..00000000000000
--- a/Lib/lib2to3/patcomp.py
+++ /dev/null
@@ -1,204 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Pattern compiler.
-
-The grammar is taken from PatternGrammar.txt.
-
-The compiler compiles a pattern to a pytree.*Pattern instance.
-"""
-
-__author__ = "Guido van Rossum <guido@python.org>"
-
-# Python imports
-import io
-
-# Fairly local imports
-from .pgen2 import driver, literals, token, tokenize, parse, grammar
-
-# Really local imports
-from . import pytree
-from . import pygram
-
-
-class PatternSyntaxError(Exception):
-    pass
-
-
-def tokenize_wrapper(input):
-    """Tokenizes a string suppressing significant whitespace."""
-    skip = {token.NEWLINE, token.INDENT, token.DEDENT}
-    tokens = tokenize.generate_tokens(io.StringIO(input).readline)
-    for quintuple in tokens:
-        type, value, start, end, line_text = quintuple
-        if type not in skip:
-            yield quintuple
-
-
-class PatternCompiler(object):
-
-    def __init__(self, grammar_file=None):
-        """Initializer.
-
-        Takes an optional alternative filename for the pattern grammar.
-        """
-        if grammar_file is None:
-            self.grammar = pygram.pattern_grammar
-            self.syms = pygram.pattern_symbols
-        else:
-            self.grammar = driver.load_grammar(grammar_file)
-            self.syms = pygram.Symbols(self.grammar)
-        self.pygrammar = pygram.python_grammar
-        self.pysyms = pygram.python_symbols
-        self.driver = driver.Driver(self.grammar, convert=pattern_convert)
-
-    def compile_pattern(self, input, debug=False, with_tree=False):
-        """Compiles a pattern string to a nested pytree.*Pattern object."""
-        tokens = tokenize_wrapper(input)
-        try:
-            root = self.driver.parse_tokens(tokens, debug=debug)
-        except parse.ParseError as e:
-            raise PatternSyntaxError(str(e)) from None
-        if with_tree:
-            return self.compile_node(root), root
-        else:
-            return self.compile_node(root)
-
-    def compile_node(self, node):
-        """Compiles a node, recursively.
-
-        This is one big switch on the node type.
-        """
-        # XXX Optimize certain Wildcard-containing-Wildcard patterns
-        # that can be merged
-        if node.type == self.syms.Matcher:
-            node = node.children[0] # Avoid unneeded recursion
-
-        if node.type == self.syms.Alternatives:
-            # Skip the odd children since they are just '|' tokens
-            alts = [self.compile_node(ch) for ch in node.children[::2]]
-            if len(alts) == 1:
-                return alts[0]
-            p = pytree.WildcardPattern([[a] for a in alts], min=1, max=1)
-            return p.optimize()
-
-        if node.type == self.syms.Alternative:
-            units = [self.compile_node(ch) for ch in node.children]
-            if len(units) == 1:
-                return units[0]
-            p = pytree.WildcardPattern([units], min=1, max=1)
-            return p.optimize()
-
-        if node.type == self.syms.NegatedUnit:
-            pattern = self.compile_basic(node.children[1:])
-            p = pytree.NegatedPattern(pattern)
-            return p.optimize()
-
-        assert node.type == self.syms.Unit
-
-        name = None
-        nodes = node.children
-        if len(nodes) >= 3 and nodes[1].type == token.EQUAL:
-            name = nodes[0].value
-            nodes = nodes[2:]
-        repeat = None
-        if len(nodes) >= 2 and nodes[-1].type == self.syms.Repeater:
-            repeat = nodes[-1]
-            nodes = nodes[:-1]
-
-        # Now we've reduced it to: STRING | NAME [Details] | (...) | [...]
-        pattern = self.compile_basic(nodes, repeat)
-
-        if repeat is not None:
-            assert repeat.type == self.syms.Repeater
-            children = repeat.children
-            child = children[0]
-            if child.type == token.STAR:
-                min = 0
-                max = pytree.HUGE
-            elif child.type == token.PLUS:
-                min = 1
-                max = pytree.HUGE
-            elif child.type == token.LBRACE:
-                assert children[-1].type == token.RBRACE
-                assert  len(children) in (3, 5)
-                min = max = self.get_int(children[1])
-                if len(children) == 5:
-                    max = self.get_int(children[3])
-            else:
-                assert False
-            if min != 1 or max != 1:
-                pattern = pattern.optimize()
-                pattern = pytree.WildcardPattern([[pattern]], min=min, max=max)
-
-        if name is not None:
-            pattern.name = name
-        return pattern.optimize()
-
-    def compile_basic(self, nodes, repeat=None):
-        # Compile STRING | NAME [Details] | (...) | [...]
-        assert len(nodes) >= 1
-        node = nodes[0]
-        if node.type == token.STRING:
-            value = str(literals.evalString(node.value))
-            return pytree.LeafPattern(_type_of_literal(value), value)
-        elif node.type == token.NAME:
-            value = node.value
-            if value.isupper():
-                if value not in TOKEN_MAP:
-                    raise PatternSyntaxError("Invalid token: %r" % value)
-                if nodes[1:]:
-                    raise PatternSyntaxError("Can't have details for token")
-                return pytree.LeafPattern(TOKEN_MAP[value])
-            else:
-                if value == "any":
-                    type = None
-                elif not value.startswith("_"):
-                    type = getattr(self.pysyms, value, None)
-                    if type is None:
-                        raise PatternSyntaxError("Invalid symbol: %r" % value)
-                if nodes[1:]: # Details present
-                    content = [self.compile_node(nodes[1].children[1])]
-                else:
-                    content = None
-                return pytree.NodePattern(type, content)
-        elif node.value == "(":
-            return self.compile_node(nodes[1])
-        elif node.value == "[":
-            assert repeat is None
-            subpattern = self.compile_node(nodes[1])
-            return pytree.WildcardPattern([[subpattern]], min=0, max=1)
-        assert False, node
-
-    def get_int(self, node):
-        assert node.type == token.NUMBER
-        return int(node.value)
-
-
-# Map named tokens to the type value for a LeafPattern
-TOKEN_MAP = {"NAME": token.NAME,
-             "STRING": token.STRING,
-             "NUMBER": token.NUMBER,
-             "TOKEN": None}
-
-
-def _type_of_literal(value):
-    if value[0].isalpha():
-        return token.NAME
-    elif value in grammar.opmap:
-        return grammar.opmap[value]
-    else:
-        return None
-
-
-def pattern_convert(grammar, raw_node_info):
-    """Converts raw node information to a Node or Leaf instance."""
-    type, value, context, children = raw_node_info
-    if children or type in grammar.number2symbol:
-        return pytree.Node(type, children, context=context)
-    else:
-        return pytree.Leaf(type, value, context=context)
-
-
-def compile_pattern(pattern):
-    return PatternCompiler().compile_pattern(pattern)
diff --git a/Lib/lib2to3/pgen2/__init__.py b/Lib/lib2to3/pgen2/__init__.py
deleted file mode 100644
index af390484528d87..00000000000000
--- a/Lib/lib2to3/pgen2/__init__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""The pgen2 package."""
diff --git a/Lib/lib2to3/pgen2/conv.py b/Lib/lib2to3/pgen2/conv.py
deleted file mode 100644
index ed0cac532e4249..00000000000000
--- a/Lib/lib2to3/pgen2/conv.py
+++ /dev/null
@@ -1,257 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Convert graminit.[ch] spit out by pgen to Python code.
-
-Pgen is the Python parser generator.  It is useful to quickly create a
-parser from a grammar file in Python's grammar notation.  But I don't
-want my parsers to be written in C (yet), so I'm translating the
-parsing tables to Python data structures and writing a Python parse
-engine.
-
-Note that the token numbers are constants determined by the standard
-Python tokenizer.  The standard token module defines these numbers and
-their names (the names are not used much).  The token numbers are
-hardcoded into the Python tokenizer and into pgen.  A Python
-implementation of the Python tokenizer is also available, in the
-standard tokenize module.
-
-On the other hand, symbol numbers (representing the grammar's
-non-terminals) are assigned by pgen based on the actual grammar
-input.
-
-Note: this module is pretty much obsolete; the pgen module generates
-equivalent grammar tables directly from the Grammar.txt input file
-without having to invoke the Python pgen C program.
-
-"""
-
-# Python imports
-import re
-
-# Local imports
-from pgen2 import grammar, token
-
-
-class Converter(grammar.Grammar):
-    """Grammar subclass that reads classic pgen output files.
-
-    The run() method reads the tables as produced by the pgen parser
-    generator, typically contained in two C files, graminit.h and
-    graminit.c.  The other methods are for internal use only.
-
-    See the base class for more documentation.
-
-    """
-
-    def run(self, graminit_h, graminit_c):
-        """Load the grammar tables from the text files written by pgen."""
-        self.parse_graminit_h(graminit_h)
-        self.parse_graminit_c(graminit_c)
-        self.finish_off()
-
-    def parse_graminit_h(self, filename):
-        """Parse the .h file written by pgen.  (Internal)
-
-        This file is a sequence of #define statements defining the
-        nonterminals of the grammar as numbers.  We build two tables
-        mapping the numbers to names and back.
-
-        """
-        try:
-            f = open(filename)
-        except OSError as err:
-            print("Can't open %s: %s" % (filename, err))
-            return False
-        self.symbol2number = {}
-        self.number2symbol = {}
-        lineno = 0
-        for line in f:
-            lineno += 1
-            mo = re.match(r"^#define\s+(\w+)\s+(\d+)$", line)
-            if not mo and line.strip():
-                print("%s(%s): can't parse %s" % (filename, lineno,
-                                                  line.strip()))
-            else:
-                symbol, number = mo.groups()
-                number = int(number)
-                assert symbol not in self.symbol2number
-                assert number not in self.number2symbol
-                self.symbol2number[symbol] = number
-                self.number2symbol[number] = symbol
-        return True
-
-    def parse_graminit_c(self, filename):
-        """Parse the .c file written by pgen.  (Internal)
-
-        The file looks as follows.  The first two lines are always this:
-
-        #include "pgenheaders.h"
-        #include "grammar.h"
-
-        After that come four blocks:
-
-        1) one or more state definitions
-        2) a table defining dfas
-        3) a table defining labels
-        4) a struct defining the grammar
-
-        A state definition has the following form:
-        - one or more arc arrays, each of the form:
-          static arc arcs_<n>_<m>[<k>] = {
-                  {<i>, <j>},
-                  ...
-          };
-        - followed by a state array, of the form:
-          static state states_<s>[<t>] = {
-                  {<k>, arcs_<n>_<m>},
-                  ...
-          };
-
-        """
-        try:
-            f = open(filename)
-        except OSError as err:
-            print("Can't open %s: %s" % (filename, err))
-            return False
-        # The code below essentially uses f's iterator-ness!
-        lineno = 0
-
-        # Expect the two #include lines
-        lineno, line = lineno+1, next(f)
-        assert line == '#include "pgenheaders.h"\n', (lineno, line)
-        lineno, line = lineno+1, next(f)
-        assert line == '#include "grammar.h"\n', (lineno, line)
-
-        # Parse the state definitions
-        lineno, line = lineno+1, next(f)
-        allarcs = {}
-        states = []
-        while line.startswith("static arc "):
-            while line.startswith("static arc "):
-                mo = re.match(r"static arc arcs_(\d+)_(\d+)\[(\d+)\] = {$",
-                              line)
-                assert mo, (lineno, line)
-                n, m, k = list(map(int, mo.groups()))
-                arcs = []
-                for _ in range(k):
-                    lineno, line = lineno+1, next(f)
-                    mo = re.match(r"\s+{(\d+), (\d+)},$", line)
-                    assert mo, (lineno, line)
-                    i, j = list(map(int, mo.groups()))
-                    arcs.append((i, j))
-                lineno, line = lineno+1, next(f)
-                assert line == "};\n", (lineno, line)
-                allarcs[(n, m)] = arcs
-                lineno, line = lineno+1, next(f)
-            mo = re.match(r"static state states_(\d+)\[(\d+)\] = {$", line)
-            assert mo, (lineno, line)
-            s, t = list(map(int, mo.groups()))
-            assert s == len(states), (lineno, line)
-            state = []
-            for _ in range(t):
-                lineno, line = lineno+1, next(f)
-                mo = re.match(r"\s+{(\d+), arcs_(\d+)_(\d+)},$", line)
-                assert mo, (lineno, line)
-                k, n, m = list(map(int, mo.groups()))
-                arcs = allarcs[n, m]
-                assert k == len(arcs), (lineno, line)
-                state.append(arcs)
-            states.append(state)
-            lineno, line = lineno+1, next(f)
-            assert line == "};\n", (lineno, line)
-            lineno, line = lineno+1, next(f)
-        self.states = states
-
-        # Parse the dfas
-        dfas = {}
-        mo = re.match(r"static dfa dfas\[(\d+)\] = {$", line)
-        assert mo, (lineno, line)
-        ndfas = int(mo.group(1))
-        for i in range(ndfas):
-            lineno, line = lineno+1, next(f)
-            mo = re.match(r'\s+{(\d+), "(\w+)", (\d+), (\d+), states_(\d+),$',
-                          line)
-            assert mo, (lineno, line)
-            symbol = mo.group(2)
-            number, x, y, z = list(map(int, mo.group(1, 3, 4, 5)))
-            assert self.symbol2number[symbol] == number, (lineno, line)
-            assert self.number2symbol[number] == symbol, (lineno, line)
-            assert x == 0, (lineno, line)
-            state = states[z]
-            assert y == len(state), (lineno, line)
-            lineno, line = lineno+1, next(f)
-            mo = re.match(r'\s+("(?:\\\d\d\d)*")},$', line)
-            assert mo, (lineno, line)
-            first = {}
-            rawbitset = eval(mo.group(1))
-            for i, c in enumerate(rawbitset):
-                byte = ord(c)
-                for j in range(8):
-                    if byte & (1<<j):
-                        first[i*8 + j] = 1
-            dfas[number] = (state, first)
-        lineno, line = lineno+1, next(f)
-        assert line == "};\n", (lineno, line)
-        self.dfas = dfas
-
-        # Parse the labels
-        labels = []
-        lineno, line = lineno+1, next(f)
-        mo = re.match(r"static label labels\[(\d+)\] = {$", line)
-        assert mo, (lineno, line)
-        nlabels = int(mo.group(1))
-        for i in range(nlabels):
-            lineno, line = lineno+1, next(f)
-            mo = re.match(r'\s+{(\d+), (0|"\w+")},$', line)
-            assert mo, (lineno, line)
-            x, y = mo.groups()
-            x = int(x)
-            if y == "0":
-                y = None
-            else:
-                y = eval(y)
-            labels.append((x, y))
-        lineno, line = lineno+1, next(f)
-        assert line == "};\n", (lineno, line)
-        self.labels = labels
-
-        # Parse the grammar struct
-        lineno, line = lineno+1, next(f)
-        assert line == "grammar _PyParser_Grammar = {\n", (lineno, line)
-        lineno, line = lineno+1, next(f)
-        mo = re.match(r"\s+(\d+),$", line)
-        assert mo, (lineno, line)
-        ndfas = int(mo.group(1))
-        assert ndfas == len(self.dfas)
-        lineno, line = lineno+1, next(f)
-        assert line == "\tdfas,\n", (lineno, line)
-        lineno, line = lineno+1, next(f)
-        mo = re.match(r"\s+{(\d+), labels},$", line)
-        assert mo, (lineno, line)
-        nlabels = int(mo.group(1))
-        assert nlabels == len(self.labels), (lineno, line)
-        lineno, line = lineno+1, next(f)
-        mo = re.match(r"\s+(\d+)$", line)
-        assert mo, (lineno, line)
-        start = int(mo.group(1))
-        assert start in self.number2symbol, (lineno, line)
-        self.start = start
-        lineno, line = lineno+1, next(f)
-        assert line == "};\n", (lineno, line)
-        try:
-            lineno, line = lineno+1, next(f)
-        except StopIteration:
-            pass
-        else:
-            assert 0, (lineno, line)
-
-    def finish_off(self):
-        """Create additional useful structures.  (Internal)."""
-        self.keywords = {} # map from keyword strings to arc labels
-        self.tokens = {}   # map from numeric token values to arc labels
-        for ilabel, (type, value) in enumerate(self.labels):
-            if type == token.NAME and value is not None:
-                self.keywords[value] = ilabel
-            elif value is None:
-                self.tokens[type] = ilabel
diff --git a/Lib/lib2to3/pgen2/driver.py b/Lib/lib2to3/pgen2/driver.py
deleted file mode 100644
index 6471635a3192dd..00000000000000
--- a/Lib/lib2to3/pgen2/driver.py
+++ /dev/null
@@ -1,177 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-# Modifications:
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Parser driver.
-
-This provides a high-level interface to parse a file into a syntax tree.
-
-"""
-
-__author__ = "Guido van Rossum <guido@python.org>"
-
-__all__ = ["Driver", "load_grammar"]
-
-# Python imports
-import io
-import os
-import logging
-import pkgutil
-import sys
-
-# Pgen imports
-from . import grammar, parse, token, tokenize, pgen
-
-
-class Driver(object):
-
-    def __init__(self, grammar, convert=None, logger=None):
-        self.grammar = grammar
-        if logger is None:
-            logger = logging.getLogger()
-        self.logger = logger
-        self.convert = convert
-
-    def parse_tokens(self, tokens, debug=False):
-        """Parse a series of tokens and return the syntax tree."""
-        # XXX Move the prefix computation into a wrapper around tokenize.
-        p = parse.Parser(self.grammar, self.convert)
-        p.setup()
-        lineno = 1
-        column = 0
-        type = value = start = end = line_text = None
-        prefix = ""
-        for quintuple in tokens:
-            type, value, start, end, line_text = quintuple
-            if start != (lineno, column):
-                assert (lineno, column) <= start, ((lineno, column), start)
-                s_lineno, s_column = start
-                if lineno < s_lineno:
-                    prefix += "\n" * (s_lineno - lineno)
-                    lineno = s_lineno
-                    column = 0
-                if column < s_column:
-                    prefix += line_text[column:s_column]
-                    column = s_column
-            if type in (tokenize.COMMENT, tokenize.NL):
-                prefix += value
-                lineno, column = end
-                if value.endswith("\n"):
-                    lineno += 1
-                    column = 0
-                continue
-            if type == token.OP:
-                type = grammar.opmap[value]
-            if debug:
-                self.logger.debug("%s %r (prefix=%r)",
-                                  token.tok_name[type], value, prefix)
-            if p.addtoken(type, value, (prefix, start)):
-                if debug:
-                    self.logger.debug("Stop.")
-                break
-            prefix = ""
-            lineno, column = end
-            if value.endswith("\n"):
-                lineno += 1
-                column = 0
-        else:
-            # We never broke out -- EOF is too soon (how can this happen???)
-            raise parse.ParseError("incomplete input",
-                                   type, value, (prefix, start))
-        return p.rootnode
-
-    def parse_stream_raw(self, stream, debug=False):
-        """Parse a stream and return the syntax tree."""
-        tokens = tokenize.generate_tokens(stream.readline)
-        return self.parse_tokens(tokens, debug)
-
-    def parse_stream(self, stream, debug=False):
-        """Parse a stream and return the syntax tree."""
-        return self.parse_stream_raw(stream, debug)
-
-    def parse_file(self, filename, encoding=None, debug=False):
-        """Parse a file and return the syntax tree."""
-        with io.open(filename, "r", encoding=encoding) as stream:
-            return self.parse_stream(stream, debug)
-
-    def parse_string(self, text, debug=False):
-        """Parse a string and return the syntax tree."""
-        tokens = tokenize.generate_tokens(io.StringIO(text).readline)
-        return self.parse_tokens(tokens, debug)
-
-
-def _generate_pickle_name(gt):
-    head, tail = os.path.splitext(gt)
-    if tail == ".txt":
-        tail = ""
-    return head + tail + ".".join(map(str, sys.version_info)) + ".pickle"
-
-
-def load_grammar(gt="Grammar.txt", gp=None,
-                 save=True, force=False, logger=None):
-    """Load the grammar (maybe from a pickle)."""
-    if logger is None:
-        logger = logging.getLogger()
-    gp = _generate_pickle_name(gt) if gp is None else gp
-    if force or not _newer(gp, gt):
-        logger.info("Generating grammar tables from %s", gt)
-        g = pgen.generate_grammar(gt)
-        if save:
-            logger.info("Writing grammar tables to %s", gp)
-            try:
-                g.dump(gp)
-            except OSError as e:
-                logger.info("Writing failed: %s", e)
-    else:
-        g = grammar.Grammar()
-        g.load(gp)
-    return g
-
-
-def _newer(a, b):
-    """Inquire whether file a was written since file b."""
-    if not os.path.exists(a):
-        return False
-    if not os.path.exists(b):
-        return True
-    return os.path.getmtime(a) >= os.path.getmtime(b)
-
-
-def load_packaged_grammar(package, grammar_source):
-    """Normally, loads a pickled grammar by doing
-        pkgutil.get_data(package, pickled_grammar)
-    where *pickled_grammar* is computed from *grammar_source* by adding the
-    Python version and using a ``.pickle`` extension.
-
-    However, if *grammar_source* is an extant file, load_grammar(grammar_source)
-    is called instead. This facilitates using a packaged grammar file when needed
-    but preserves load_grammar's automatic regeneration behavior when possible.
-
-    """
-    if os.path.isfile(grammar_source):
-        return load_grammar(grammar_source)
-    pickled_name = _generate_pickle_name(os.path.basename(grammar_source))
-    data = pkgutil.get_data(package, pickled_name)
-    g = grammar.Grammar()
-    g.loads(data)
-    return g
-
-
-def main(*args):
-    """Main program, when run as a script: produce grammar pickle files.
-
-    Calls load_grammar for each argument, a path to a grammar text file.
-    """
-    if not args:
-        args = sys.argv[1:]
-    logging.basicConfig(level=logging.INFO, stream=sys.stdout,
-                        format='%(message)s')
-    for gt in args:
-        load_grammar(gt, save=True, force=True)
-    return True
-
-if __name__ == "__main__":
-    sys.exit(int(not main()))
diff --git a/Lib/lib2to3/pgen2/grammar.py b/Lib/lib2to3/pgen2/grammar.py
deleted file mode 100644
index 5d550aeb65e8dd..00000000000000
--- a/Lib/lib2to3/pgen2/grammar.py
+++ /dev/null
@@ -1,189 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""This module defines the data structures used to represent a grammar.
-
-These are a bit arcane because they are derived from the data
-structures used by Python's 'pgen' parser generator.
-
-There's also a table here mapping operators to their names in the
-token module; the Python tokenize module reports all operators as the
-fallback token code OP, but the parser needs the actual token code.
-
-"""
-
-# Python imports
-import pickle
-
-# Local imports
-from . import token
-
-
-class Grammar(object):
-    """Pgen parsing tables conversion class.
-
-    Once initialized, this class supplies the grammar tables for the
-    parsing engine implemented by parse.py.  The parsing engine
-    accesses the instance variables directly.  The class here does not
-    provide initialization of the tables; several subclasses exist to
-    do this (see the conv and pgen modules).
-
-    The load() method reads the tables from a pickle file, which is
-    much faster than the other ways offered by subclasses.  The pickle
-    file is written by calling dump() (after loading the grammar
-    tables using a subclass).  The report() method prints a readable
-    representation of the tables to stdout, for debugging.
-
-    The instance variables are as follows:
-
-    symbol2number -- a dict mapping symbol names to numbers.  Symbol
-                     numbers are always 256 or higher, to distinguish
-                     them from token numbers, which are between 0 and
-                     255 (inclusive).
-
-    number2symbol -- a dict mapping numbers to symbol names;
-                     these two are each other's inverse.
-
-    states        -- a list of DFAs, where each DFA is a list of
-                     states, each state is a list of arcs, and each
-                     arc is a (i, j) pair where i is a label and j is
-                     a state number.  The DFA number is the index into
-                     this list.  (This name is slightly confusing.)
-                     Final states are represented by a special arc of
-                     the form (0, j) where j is its own state number.
-
-    dfas          -- a dict mapping symbol numbers to (DFA, first)
-                     pairs, where DFA is an item from the states list
-                     above, and first is a set of tokens that can
-                     begin this grammar rule (represented by a dict
-                     whose values are always 1).
-
-    labels        -- a list of (x, y) pairs where x is either a token
-                     number or a symbol number, and y is either None
-                     or a string; the strings are keywords.  The label
-                     number is the index in this list; label numbers
-                     are used to mark state transitions (arcs) in the
-                     DFAs.
-
-    start         -- the number of the grammar's start symbol.
-
-    keywords      -- a dict mapping keyword strings to arc labels.
-
-    tokens        -- a dict mapping token numbers to arc labels.
-
-    """
-
-    def __init__(self):
-        self.symbol2number = {}
-        self.number2symbol = {}
-        self.states = []
-        self.dfas = {}
-        self.labels = [(0, "EMPTY")]
-        self.keywords = {}
-        self.tokens = {}
-        self.symbol2label = {}
-        self.start = 256
-
-    def dump(self, filename):
-        """Dump the grammar tables to a pickle file."""
-        with open(filename, "wb") as f:
-            pickle.dump(self.__dict__, f, pickle.HIGHEST_PROTOCOL)
-
-    def load(self, filename):
-        """Load the grammar tables from a pickle file."""
-        with open(filename, "rb") as f:
-            d = pickle.load(f)
-        self.__dict__.update(d)
-
-    def loads(self, pkl):
-        """Load the grammar tables from a pickle bytes object."""
-        self.__dict__.update(pickle.loads(pkl))
-
-    def copy(self):
-        """
-        Copy the grammar.
-        """
-        new = self.__class__()
-        for dict_attr in ("symbol2number", "number2symbol", "dfas", "keywords",
-                          "tokens", "symbol2label"):
-            setattr(new, dict_attr, getattr(self, dict_attr).copy())
-        new.labels = self.labels[:]
-        new.states = self.states[:]
-        new.start = self.start
-        return new
-
-    def report(self):
-        """Dump the grammar tables to standard output, for debugging."""
-        from pprint import pprint
-        print("s2n")
-        pprint(self.symbol2number)
-        print("n2s")
-        pprint(self.number2symbol)
-        print("states")
-        pprint(self.states)
-        print("dfas")
-        pprint(self.dfas)
-        print("labels")
-        pprint(self.labels)
-        print("start", self.start)
-
-
-# Map from operator to number (since tokenize doesn't do this)
-
-opmap_raw = """
-( LPAR
-) RPAR
-[ LSQB
-] RSQB
-: COLON
-, COMMA
-; SEMI
-+ PLUS
-- MINUS
-* STAR
-/ SLASH
-| VBAR
-& AMPER
-< LESS
-> GREATER
-= EQUAL
-. DOT
-% PERCENT
-` BACKQUOTE
-{ LBRACE
-} RBRACE
-@ AT
-@= ATEQUAL
-== EQEQUAL
-!= NOTEQUAL
-<> NOTEQUAL
-<= LESSEQUAL
->= GREATEREQUAL
-~ TILDE
-^ CIRCUMFLEX
-<< LEFTSHIFT
->> RIGHTSHIFT
-** DOUBLESTAR
-+= PLUSEQUAL
--= MINEQUAL
-*= STAREQUAL
-/= SLASHEQUAL
-%= PERCENTEQUAL
-&= AMPEREQUAL
-|= VBAREQUAL
-^= CIRCUMFLEXEQUAL
-<<= LEFTSHIFTEQUAL
->>= RIGHTSHIFTEQUAL
-**= DOUBLESTAREQUAL
-// DOUBLESLASH
-//= DOUBLESLASHEQUAL
--> RARROW
-:= COLONEQUAL
-"""
-
-opmap = {}
-for line in opmap_raw.splitlines():
-    if line:
-        op, name = line.split()
-        opmap[op] = getattr(token, name)
-del line, op, name
diff --git a/Lib/lib2to3/pgen2/literals.py b/Lib/lib2to3/pgen2/literals.py
deleted file mode 100644
index b9b63e6e5572c1..00000000000000
--- a/Lib/lib2to3/pgen2/literals.py
+++ /dev/null
@@ -1,60 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Safely evaluate Python string literals without using eval()."""
-
-import re
-
-simple_escapes = {"a": "\a",
-                  "b": "\b",
-                  "f": "\f",
-                  "n": "\n",
-                  "r": "\r",
-                  "t": "\t",
-                  "v": "\v",
-                  "'": "'",
-                  '"': '"',
-                  "\\": "\\"}
-
-def escape(m):
-    all, tail = m.group(0, 1)
-    assert all.startswith("\\")
-    esc = simple_escapes.get(tail)
-    if esc is not None:
-        return esc
-    if tail.startswith("x"):
-        hexes = tail[1:]
-        if len(hexes) < 2:
-            raise ValueError("invalid hex string escape ('\\%s')" % tail)
-        try:
-            i = int(hexes, 16)
-        except ValueError:
-            raise ValueError("invalid hex string escape ('\\%s')" % tail) from None
-    else:
-        try:
-            i = int(tail, 8)
-        except ValueError:
-            raise ValueError("invalid octal string escape ('\\%s')" % tail) from None
-    return chr(i)
-
-def evalString(s):
-    assert s.startswith("'") or s.startswith('"'), repr(s[:1])
-    q = s[0]
-    if s[:3] == q*3:
-        q = q*3
-    assert s.endswith(q), repr(s[-len(q):])
-    assert len(s) >= 2*len(q)
-    s = s[len(q):-len(q)]
-    return re.sub(r"\\(\'|\"|\\|[abfnrtv]|x.{0,2}|[0-7]{1,3})", escape, s)
-
-def test():
-    for i in range(256):
-        c = chr(i)
-        s = repr(c)
-        e = evalString(s)
-        if e != c:
-            print(i, c, s, e)
-
-
-if __name__ == "__main__":
-    test()
diff --git a/Lib/lib2to3/pgen2/parse.py b/Lib/lib2to3/pgen2/parse.py
deleted file mode 100644
index cf3fcf7e99fd11..00000000000000
--- a/Lib/lib2to3/pgen2/parse.py
+++ /dev/null
@@ -1,204 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Parser engine for the grammar tables generated by pgen.
-
-The grammar table must be loaded first.
-
-See Parser/parser.c in the Python distribution for additional info on
-how this parsing engine works.
-
-"""
-
-# Local imports
-from . import token
-
-class ParseError(Exception):
-    """Exception to signal the parser is stuck."""
-
-    def __init__(self, msg, type, value, context):
-        Exception.__init__(self, "%s: type=%r, value=%r, context=%r" %
-                           (msg, type, value, context))
-        self.msg = msg
-        self.type = type
-        self.value = value
-        self.context = context
-
-    def __reduce__(self):
-        return type(self), (self.msg, self.type, self.value, self.context)
-
-class Parser(object):
-    """Parser engine.
-
-    The proper usage sequence is:
-
-    p = Parser(grammar, [converter])  # create instance
-    p.setup([start])                  # prepare for parsing
-    <for each input token>:
-        if p.addtoken(...):           # parse a token; may raise ParseError
-            break
-    root = p.rootnode                 # root of abstract syntax tree
-
-    A Parser instance may be reused by calling setup() repeatedly.
-
-    A Parser instance contains state pertaining to the current token
-    sequence, and should not be used concurrently by different threads
-    to parse separate token sequences.
-
-    See driver.py for how to get input tokens by tokenizing a file or
-    string.
-
-    Parsing is complete when addtoken() returns True; the root of the
-    abstract syntax tree can then be retrieved from the rootnode
-    instance variable.  When a syntax error occurs, addtoken() raises
-    the ParseError exception.  There is no error recovery; the parser
-    cannot be used after a syntax error was reported (but it can be
-    reinitialized by calling setup()).
-
-    """
-
-    def __init__(self, grammar, convert=None):
-        """Constructor.
-
-        The grammar argument is a grammar.Grammar instance; see the
-        grammar module for more information.
-
-        The parser is not ready yet for parsing; you must call the
-        setup() method to get it started.
-
-        The optional convert argument is a function mapping concrete
-        syntax tree nodes to abstract syntax tree nodes.  If not
-        given, no conversion is done and the syntax tree produced is
-        the concrete syntax tree.  If given, it must be a function of
-        two arguments, the first being the grammar (a grammar.Grammar
-        instance), and the second being the concrete syntax tree node
-        to be converted.  The syntax tree is converted from the bottom
-        up.
-
-        A concrete syntax tree node is a (type, value, context, nodes)
-        tuple, where type is the node type (a token or symbol number),
-        value is None for symbols and a string for tokens, context is
-        None or an opaque value used for error reporting (typically a
-        (lineno, offset) pair), and nodes is a list of children for
-        symbols, and None for tokens.
-
-        An abstract syntax tree node may be anything; this is entirely
-        up to the converter function.
-
-        """
-        self.grammar = grammar
-        self.convert = convert or (lambda grammar, node: node)
-
-    def setup(self, start=None):
-        """Prepare for parsing.
-
-        This *must* be called before starting to parse.
-
-        The optional argument is an alternative start symbol; it
-        defaults to the grammar's start symbol.
-
-        You can use a Parser instance to parse any number of programs;
-        each time you call setup() the parser is reset to an initial
-        state determined by the (implicit or explicit) start symbol.
-
-        """
-        if start is None:
-            start = self.grammar.start
-        # Each stack entry is a tuple: (dfa, state, node).
-        # A node is a tuple: (type, value, context, children),
-        # where children is a list of nodes or None, and context may be None.
-        newnode = (start, None, None, [])
-        stackentry = (self.grammar.dfas[start], 0, newnode)
-        self.stack = [stackentry]
-        self.rootnode = None
-        self.used_names = set() # Aliased to self.rootnode.used_names in pop()
-
-    def addtoken(self, type, value, context):
-        """Add a token; return True iff this is the end of the program."""
-        # Map from token to label
-        ilabel = self.classify(type, value, context)
-        # Loop until the token is shifted; may raise exceptions
-        while True:
-            dfa, state, node = self.stack[-1]
-            states, first = dfa
-            arcs = states[state]
-            # Look for a state with this label
-            for i, newstate in arcs:
-                t, v = self.grammar.labels[i]
-                if ilabel == i:
-                    # Look it up in the list of labels
-                    assert t < 256
-                    # Shift a token; we're done with it
-                    self.shift(type, value, newstate, context)
-                    # Pop while we are in an accept-only state
-                    state = newstate
-                    while states[state] == [(0, state)]:
-                        self.pop()
-                        if not self.stack:
-                            # Done parsing!
-                            return True
-                        dfa, state, node = self.stack[-1]
-                        states, first = dfa
-                    # Done with this token
-                    return False
-                elif t >= 256:
-                    # See if it's a symbol and if we're in its first set
-                    itsdfa = self.grammar.dfas[t]
-                    itsstates, itsfirst = itsdfa
-                    if ilabel in itsfirst:
-                        # Push a symbol
-                        self.push(t, self.grammar.dfas[t], newstate, context)
-                        break # To continue the outer while loop
-            else:
-                if (0, state) in arcs:
-                    # An accepting state, pop it and try something else
-                    self.pop()
-                    if not self.stack:
-                        # Done parsing, but another token is input
-                        raise ParseError("too much input",
-                                         type, value, context)
-                else:
-                    # No success finding a transition
-                    raise ParseError("bad input", type, value, context)
-
-    def classify(self, type, value, context):
-        """Turn a token into a label.  (Internal)"""
-        if type == token.NAME:
-            # Keep a listing of all used names
-            self.used_names.add(value)
-            # Check for reserved words
-            ilabel = self.grammar.keywords.get(value)
-            if ilabel is not None:
-                return ilabel
-        ilabel = self.grammar.tokens.get(type)
-        if ilabel is None:
-            raise ParseError("bad token", type, value, context)
-        return ilabel
-
-    def shift(self, type, value, newstate, context):
-        """Shift a token.  (Internal)"""
-        dfa, state, node = self.stack[-1]
-        newnode = (type, value, context, None)
-        newnode = self.convert(self.grammar, newnode)
-        if newnode is not None:
-            node[-1].append(newnode)
-        self.stack[-1] = (dfa, newstate, node)
-
-    def push(self, type, newdfa, newstate, context):
-        """Push a nonterminal.  (Internal)"""
-        dfa, state, node = self.stack[-1]
-        newnode = (type, None, context, [])
-        self.stack[-1] = (dfa, newstate, node)
-        self.stack.append((newdfa, 0, newnode))
-
-    def pop(self):
-        """Pop a nonterminal.  (Internal)"""
-        popdfa, popstate, popnode = self.stack.pop()
-        newnode = self.convert(self.grammar, popnode)
-        if newnode is not None:
-            if self.stack:
-                dfa, state, node = self.stack[-1]
-                node[-1].append(newnode)
-            else:
-                self.rootnode = newnode
-                self.rootnode.used_names = self.used_names
diff --git a/Lib/lib2to3/pgen2/pgen.py b/Lib/lib2to3/pgen2/pgen.py
deleted file mode 100644
index 7abd5cef1c36bb..00000000000000
--- a/Lib/lib2to3/pgen2/pgen.py
+++ /dev/null
@@ -1,386 +0,0 @@
-# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-# Pgen imports
-from . import grammar, token, tokenize
-
-class PgenGrammar(grammar.Grammar):
-    pass
-
-class ParserGenerator(object):
-
-    def __init__(self, filename, stream=None):
-        close_stream = None
-        if stream is None:
-            stream = open(filename, encoding="utf-8")
-            close_stream = stream.close
-        self.filename = filename
-        self.stream = stream
-        self.generator = tokenize.generate_tokens(stream.readline)
-        self.gettoken() # Initialize lookahead
-        self.dfas, self.startsymbol = self.parse()
-        if close_stream is not None:
-            close_stream()
-        self.first = {} # map from symbol name to set of tokens
-        self.addfirstsets()
-
-    def make_grammar(self):
-        c = PgenGrammar()
-        names = list(self.dfas.keys())
-        names.sort()
-        names.remove(self.startsymbol)
-        names.insert(0, self.startsymbol)
-        for name in names:
-            i = 256 + len(c.symbol2number)
-            c.symbol2number[name] = i
-            c.number2symbol[i] = name
-        for name in names:
-            dfa = self.dfas[name]
-            states = []
-            for state in dfa:
-                arcs = []
-                for label, next in sorted(state.arcs.items()):
-                    arcs.append((self.make_label(c, label), dfa.index(next)))
-                if state.isfinal:
-                    arcs.append((0, dfa.index(state)))
-                states.append(arcs)
-            c.states.append(states)
-            c.dfas[c.symbol2number[name]] = (states, self.make_first(c, name))
-        c.start = c.symbol2number[self.startsymbol]
-        return c
-
-    def make_first(self, c, name):
-        rawfirst = self.first[name]
-        first = {}
-        for label in sorted(rawfirst):
-            ilabel = self.make_label(c, label)
-            ##assert ilabel not in first # XXX failed on <> ... !=
-            first[ilabel] = 1
-        return first
-
-    def make_label(self, c, label):
-        # XXX Maybe this should be a method on a subclass of converter?
-        ilabel = len(c.labels)
-        if label[0].isalpha():
-            # Either a symbol name or a named token
-            if label in c.symbol2number:
-                # A symbol name (a non-terminal)
-                if label in c.symbol2label:
-                    return c.symbol2label[label]
-                else:
-                    c.labels.append((c.symbol2number[label], None))
-                    c.symbol2label[label] = ilabel
-                    return ilabel
-            else:
-                # A named token (NAME, NUMBER, STRING)
-                itoken = getattr(token, label, None)
-                assert isinstance(itoken, int), label
-                assert itoken in token.tok_name, label
-                if itoken in c.tokens:
-                    return c.tokens[itoken]
-                else:
-                    c.labels.append((itoken, None))
-                    c.tokens[itoken] = ilabel
-                    return ilabel
-        else:
-            # Either a keyword or an operator
-            assert label[0] in ('"', "'"), label
-            value = eval(label)
-            if value[0].isalpha():
-                # A keyword
-                if value in c.keywords:
-                    return c.keywords[value]
-                else:
-                    c.labels.append((token.NAME, value))
-                    c.keywords[value] = ilabel
-                    return ilabel
-            else:
-                # An operator (any non-numeric token)
-                itoken = grammar.opmap[value] # Fails if unknown token
-                if itoken in c.tokens:
-                    return c.tokens[itoken]
-                else:
-                    c.labels.append((itoken, None))
-                    c.tokens[itoken] = ilabel
-                    return ilabel
-
-    def addfirstsets(self):
-        names = list(self.dfas.keys())
-        names.sort()
-        for name in names:
-            if name not in self.first:
-                self.calcfirst(name)
-            #print name, self.first[name].keys()
-
-    def calcfirst(self, name):
-        dfa = self.dfas[name]
-        self.first[name] = None # dummy to detect left recursion
-        state = dfa[0]
-        totalset = {}
-        overlapcheck = {}
-        for label, next in state.arcs.items():
-            if label in self.dfas:
-                if label in self.first:
-                    fset = self.first[label]
-                    if fset is None:
-                        raise ValueError("recursion for rule %r" % name)
-                else:
-                    self.calcfirst(label)
-                    fset = self.first[label]
-                totalset.update(fset)
-                overlapcheck[label] = fset
-            else:
-                totalset[label] = 1
-                overlapcheck[label] = {label: 1}
-        inverse = {}
-        for label, itsfirst in overlapcheck.items():
-            for symbol in itsfirst:
-                if symbol in inverse:
-                    raise ValueError("rule %s is ambiguous; %s is in the"
-                                     " first sets of %s as well as %s" %
-                                     (name, symbol, label, inverse[symbol]))
-                inverse[symbol] = label
-        self.first[name] = totalset
-
-    def parse(self):
-        dfas = {}
-        startsymbol = None
-        # MSTART: (NEWLINE | RULE)* ENDMARKER
-        while self.type != token.ENDMARKER:
-            while self.type == token.NEWLINE:
-                self.gettoken()
-            # RULE: NAME ':' RHS NEWLINE
-            name = self.expect(token.NAME)
-            self.expect(token.OP, ":")
-            a, z = self.parse_rhs()
-            self.expect(token.NEWLINE)
-            #self.dump_nfa(name, a, z)
-            dfa = self.make_dfa(a, z)
-            #self.dump_dfa(name, dfa)
-            oldlen = len(dfa)
-            self.simplify_dfa(dfa)
-            newlen = len(dfa)
-            dfas[name] = dfa
-            #print name, oldlen, newlen
-            if startsymbol is None:
-                startsymbol = name
-        return dfas, startsymbol
-
-    def make_dfa(self, start, finish):
-        # To turn an NFA into a DFA, we define the states of the DFA
-        # to correspond to *sets* of states of the NFA.  Then do some
-        # state reduction.  Let's represent sets as dicts with 1 for
-        # values.
-        assert isinstance(start, NFAState)
-        assert isinstance(finish, NFAState)
-        def closure(state):
-            base = {}
-            addclosure(state, base)
-            return base
-        def addclosure(state, base):
-            assert isinstance(state, NFAState)
-            if state in base:
-                return
-            base[state] = 1
-            for label, next in state.arcs:
-                if label is None:
-                    addclosure(next, base)
-        states = [DFAState(closure(start), finish)]
-        for state in states: # NB states grows while we're iterating
-            arcs = {}
-            for nfastate in state.nfaset:
-                for label, next in nfastate.arcs:
-                    if label is not None:
-                        addclosure(next, arcs.setdefault(label, {}))
-            for label, nfaset in sorted(arcs.items()):
-                for st in states:
-                    if st.nfaset == nfaset:
-                        break
-                else:
-                    st = DFAState(nfaset, finish)
-                    states.append(st)
-                state.addarc(st, label)
-        return states # List of DFAState instances; first one is start
-
-    def dump_nfa(self, name, start, finish):
-        print("Dump of NFA for", name)
-        todo = [start]
-        for i, state in enumerate(todo):
-            print("  State", i, state is finish and "(final)" or "")
-            for label, next in state.arcs:
-                if next in todo:
-                    j = todo.index(next)
-                else:
-                    j = len(todo)
-                    todo.append(next)
-                if label is None:
-                    print("    -> %d" % j)
-                else:
-                    print("    %s -> %d" % (label, j))
-
-    def dump_dfa(self, name, dfa):
-        print("Dump of DFA for", name)
-        for i, state in enumerate(dfa):
-            print("  State", i, state.isfinal and "(final)" or "")
-            for label, next in sorted(state.arcs.items()):
-                print("    %s -> %d" % (label, dfa.index(next)))
-
-    def simplify_dfa(self, dfa):
-        # This is not theoretically optimal, but works well enough.
-        # Algorithm: repeatedly look for two states that have the same
-        # set of arcs (same labels pointing to the same nodes) and
-        # unify them, until things stop changing.
-
-        # dfa is a list of DFAState instances
-        changes = True
-        while changes:
-            changes = False
-            for i, state_i in enumerate(dfa):
-                for j in range(i+1, len(dfa)):
-                    state_j = dfa[j]
-                    if state_i == state_j:
-                        #print "  unify", i, j
-                        del dfa[j]
-                        for state in dfa:
-                            state.unifystate(state_j, state_i)
-                        changes = True
-                        break
-
-    def parse_rhs(self):
-        # RHS: ALT ('|' ALT)*
-        a, z = self.parse_alt()
-        if self.value != "|":
-            return a, z
-        else:
-            aa = NFAState()
-            zz = NFAState()
-            aa.addarc(a)
-            z.addarc(zz)
-            while self.value == "|":
-                self.gettoken()
-                a, z = self.parse_alt()
-                aa.addarc(a)
-                z.addarc(zz)
-            return aa, zz
-
-    def parse_alt(self):
-        # ALT: ITEM+
-        a, b = self.parse_item()
-        while (self.value in ("(", "[") or
-               self.type in (token.NAME, token.STRING)):
-            c, d = self.parse_item()
-            b.addarc(c)
-            b = d
-        return a, b
-
-    def parse_item(self):
-        # ITEM: '[' RHS ']' | ATOM ['+' | '*']
-        if self.value == "[":
-            self.gettoken()
-            a, z = self.parse_rhs()
-            self.expect(token.OP, "]")
-            a.addarc(z)
-            return a, z
-        else:
-            a, z = self.parse_atom()
-            value = self.value
-            if value not in ("+", "*"):
-                return a, z
-            self.gettoken()
-            z.addarc(a)
-            if value == "+":
-                return a, z
-            else:
-                return a, a
-
-    def parse_atom(self):
-        # ATOM: '(' RHS ')' | NAME | STRING
-        if self.value == "(":
-            self.gettoken()
-            a, z = self.parse_rhs()
-            self.expect(token.OP, ")")
-            return a, z
-        elif self.type in (token.NAME, token.STRING):
-            a = NFAState()
-            z = NFAState()
-            a.addarc(z, self.value)
-            self.gettoken()
-            return a, z
-        else:
-            self.raise_error("expected (...) or NAME or STRING, got %s/%s",
-                             self.type, self.value)
-
-    def expect(self, type, value=None):
-        if self.type != type or (value is not None and self.value != value):
-            self.raise_error("expected %s/%s, got %s/%s",
-                             type, value, self.type, self.value)
-        value = self.value
-        self.gettoken()
-        return value
-
-    def gettoken(self):
-        tup = next(self.generator)
-        while tup[0] in (tokenize.COMMENT, tokenize.NL):
-            tup = next(self.generator)
-        self.type, self.value, self.begin, self.end, self.line = tup
-        #print token.tok_name[self.type], repr(self.value)
-
-    def raise_error(self, msg, *args):
-        if args:
-            try:
-                msg = msg % args
-            except:
-                msg = " ".join([msg] + list(map(str, args)))
-        raise SyntaxError(msg, (self.filename, self.end[0],
-                                self.end[1], self.line))
-
-class NFAState(object):
-
-    def __init__(self):
-        self.arcs = [] # list of (label, NFAState) pairs
-
-    def addarc(self, next, label=None):
-        assert label is None or isinstance(label, str)
-        assert isinstance(next, NFAState)
-        self.arcs.append((label, next))
-
-class DFAState(object):
-
-    def __init__(self, nfaset, final):
-        assert isinstance(nfaset, dict)
-        assert isinstance(next(iter(nfaset)), NFAState)
-        assert isinstance(final, NFAState)
-        self.nfaset = nfaset
-        self.isfinal = final in nfaset
-        self.arcs = {} # map from label to DFAState
-
-    def addarc(self, next, label):
-        assert isinstance(label, str)
-        assert label not in self.arcs
-        assert isinstance(next, DFAState)
-        self.arcs[label] = next
-
-    def unifystate(self, old, new):
-        for label, next in self.arcs.items():
-            if next is old:
-                self.arcs[label] = new
-
-    def __eq__(self, other):
-        # Equality test -- ignore the nfaset instance variable
-        assert isinstance(other, DFAState)
-        if self.isfinal != other.isfinal:
-            return False
-        # Can't just return self.arcs == other.arcs, because that
-        # would invoke this method recursively, with cycles...
-        if len(self.arcs) != len(other.arcs):
-            return False
-        for label, next in self.arcs.items():
-            if next is not other.arcs.get(label):
-                return False
-        return True
-
-    __hash__ = None # For Py3 compatibility.
-
-def generate_grammar(filename="Grammar.txt"):
-    p = ParserGenerator(filename)
-    return p.make_grammar()
diff --git a/Lib/lib2to3/pgen2/token.py b/Lib/lib2to3/pgen2/token.py
deleted file mode 100755
index 2a55138e48237b..00000000000000
--- a/Lib/lib2to3/pgen2/token.py
+++ /dev/null
@@ -1,86 +0,0 @@
-#! /usr/bin/env python3
-
-"""Token constants (from "token.h")."""
-
-#  Taken from Python (r53757) and modified to include some tokens
-#   originally monkeypatched in by pgen2.tokenize
-
-#--start constants--
-ENDMARKER = 0
-NAME = 1
-NUMBER = 2
-STRING = 3
-NEWLINE = 4
-INDENT = 5
-DEDENT = 6
-LPAR = 7
-RPAR = 8
-LSQB = 9
-RSQB = 10
-COLON = 11
-COMMA = 12
-SEMI = 13
-PLUS = 14
-MINUS = 15
-STAR = 16
-SLASH = 17
-VBAR = 18
-AMPER = 19
-LESS = 20
-GREATER = 21
-EQUAL = 22
-DOT = 23
-PERCENT = 24
-BACKQUOTE = 25
-LBRACE = 26
-RBRACE = 27
-EQEQUAL = 28
-NOTEQUAL = 29
-LESSEQUAL = 30
-GREATEREQUAL = 31
-TILDE = 32
-CIRCUMFLEX = 33
-LEFTSHIFT = 34
-RIGHTSHIFT = 35
-DOUBLESTAR = 36
-PLUSEQUAL = 37
-MINEQUAL = 38
-STAREQUAL = 39
-SLASHEQUAL = 40
-PERCENTEQUAL = 41
-AMPEREQUAL = 42
-VBAREQUAL = 43
-CIRCUMFLEXEQUAL = 44
-LEFTSHIFTEQUAL = 45
-RIGHTSHIFTEQUAL = 46
-DOUBLESTAREQUAL = 47
-DOUBLESLASH = 48
-DOUBLESLASHEQUAL = 49
-AT = 50
-ATEQUAL = 51
-OP = 52
-COMMENT = 53
-NL = 54
-RARROW = 55
-AWAIT = 56
-ASYNC = 57
-ERRORTOKEN = 58
-COLONEQUAL = 59
-N_TOKENS = 60
-NT_OFFSET = 256
-#--end constants--
-
-tok_name = {}
-for _name, _value in list(globals().items()):
-    if isinstance(_value, int):
-        tok_name[_value] = _name
-
-
-def ISTERMINAL(x):
-    return x < NT_OFFSET
-
-def ISNONTERMINAL(x):
-    return x >= NT_OFFSET
-
-def ISEOF(x):
-    return x == ENDMARKER
diff --git a/Lib/lib2to3/pgen2/tokenize.py b/Lib/lib2to3/pgen2/tokenize.py
deleted file mode 100644
index 099dfa7798afd4..00000000000000
--- a/Lib/lib2to3/pgen2/tokenize.py
+++ /dev/null
@@ -1,564 +0,0 @@
-# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Python Software Foundation.
-# All rights reserved.
-
-"""Tokenization help for Python programs.
-
-generate_tokens(readline) is a generator that breaks a stream of
-text into Python tokens.  It accepts a readline-like method which is called
-repeatedly to get the next line of input (or "" for EOF).  It generates
-5-tuples with these members:
-
-    the token type (see token.py)
-    the token (a string)
-    the starting (row, column) indices of the token (a 2-tuple of ints)
-    the ending (row, column) indices of the token (a 2-tuple of ints)
-    the original line (string)
-
-It is designed to match the working of the Python tokenizer exactly, except
-that it produces COMMENT tokens for comments and gives type OP for all
-operators
-
-Older entry points
-    tokenize_loop(readline, tokeneater)
-    tokenize(readline, tokeneater=printtoken)
-are the same, except instead of generating tokens, tokeneater is a callback
-function to which the 5 fields described above are passed as 5 arguments,
-each time a new token is found."""
-
-__author__ = 'Ka-Ping Yee <ping@lfw.org>'
-__credits__ = \
-    'GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro'
-
-import string, re
-from codecs import BOM_UTF8, lookup
-from lib2to3.pgen2.token import *
-
-from . import token
-__all__ = [x for x in dir(token) if x[0] != '_'] + ["tokenize",
-           "generate_tokens", "untokenize"]
-del token
-
-try:
-    bytes
-except NameError:
-    # Support bytes type in Python <= 2.5, so 2to3 turns itself into
-    # valid Python 3 code.
-    bytes = str
-
-def group(*choices): return '(' + '|'.join(choices) + ')'
-def any(*choices): return group(*choices) + '*'
-def maybe(*choices): return group(*choices) + '?'
-def _combinations(*l):
-    return set(
-        x + y for x in l for y in l + ("",) if x.casefold() != y.casefold()
-    )
-
-Whitespace = r'[ \f\t]*'
-Comment = r'#[^\r\n]*'
-Ignore = Whitespace + any(r'\\\r?\n' + Whitespace) + maybe(Comment)
-Name = r'\w+'
-
-Binnumber = r'0[bB]_?[01]+(?:_[01]+)*'
-Hexnumber = r'0[xX]_?[\da-fA-F]+(?:_[\da-fA-F]+)*[lL]?'
-Octnumber = r'0[oO]?_?[0-7]+(?:_[0-7]+)*[lL]?'
-Decnumber = group(r'[1-9]\d*(?:_\d+)*[lL]?', '0[lL]?')
-Intnumber = group(Binnumber, Hexnumber, Octnumber, Decnumber)
-Exponent = r'[eE][-+]?\d+(?:_\d+)*'
-Pointfloat = group(r'\d+(?:_\d+)*\.(?:\d+(?:_\d+)*)?', r'\.\d+(?:_\d+)*') + maybe(Exponent)
-Expfloat = r'\d+(?:_\d+)*' + Exponent
-Floatnumber = group(Pointfloat, Expfloat)
-Imagnumber = group(r'\d+(?:_\d+)*[jJ]', Floatnumber + r'[jJ]')
-Number = group(Imagnumber, Floatnumber, Intnumber)
-
-# Tail end of ' string.
-Single = r"[^'\\]*(?:\\.[^'\\]*)*'"
-# Tail end of " string.
-Double = r'[^"\\]*(?:\\.[^"\\]*)*"'
-# Tail end of ''' string.
-Single3 = r"[^'\\]*(?:(?:\\.|'(?!''))[^'\\]*)*'''"
-# Tail end of """ string.
-Double3 = r'[^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""'
-_litprefix = r"(?:[uUrRbBfF]|[rR][fFbB]|[fFbBuU][rR])?"
-Triple = group(_litprefix + "'''", _litprefix + '"""')
-# Single-line ' or " string.
-String = group(_litprefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*'",
-               _litprefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*"')
-
-# Because of leftmost-then-longest match semantics, be sure to put the
-# longest operators first (e.g., if = came before ==, == would get
-# recognized as two instances of =).
-Operator = group(r"\*\*=?", r">>=?", r"<<=?", r"<>", r"!=",
-                 r"//=?", r"->",
-                 r"[+\-*/%&@|^=<>]=?",
-                 r"~")
-
-Bracket = '[][(){}]'
-Special = group(r'\r?\n', r':=', r'[:;.,`@]')
-Funny = group(Operator, Bracket, Special)
-
-PlainToken = group(Number, Funny, String, Name)
-Token = Ignore + PlainToken
-
-# First (or only) line of ' or " string.
-ContStr = group(_litprefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*" +
-                group("'", r'\\\r?\n'),
-                _litprefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*' +
-                group('"', r'\\\r?\n'))
-PseudoExtras = group(r'\\\r?\n', Comment, Triple)
-PseudoToken = Whitespace + group(PseudoExtras, Number, Funny, ContStr, Name)
-
-tokenprog, pseudoprog, single3prog, double3prog = map(
-    re.compile, (Token, PseudoToken, Single3, Double3))
-
-_strprefixes = (
-    _combinations('r', 'R', 'f', 'F') |
-    _combinations('r', 'R', 'b', 'B') |
-    {'u', 'U', 'ur', 'uR', 'Ur', 'UR'}
-)
-
-endprogs = {"'": re.compile(Single), '"': re.compile(Double),
-            "'''": single3prog, '"""': double3prog,
-            **{f"{prefix}'''": single3prog for prefix in _strprefixes},
-            **{f'{prefix}"""': double3prog for prefix in _strprefixes},
-            **{prefix: None for prefix in _strprefixes}}
-
-triple_quoted = (
-    {"'''", '"""'} |
-    {f"{prefix}'''" for prefix in _strprefixes} |
-    {f'{prefix}"""' for prefix in _strprefixes}
-)
-single_quoted = (
-    {"'", '"'} |
-    {f"{prefix}'" for prefix in _strprefixes} |
-    {f'{prefix}"' for prefix in _strprefixes}
-)
-
-tabsize = 8
-
-class TokenError(Exception): pass
-
-class StopTokenizing(Exception): pass
-
-def printtoken(type, token, xxx_todo_changeme, xxx_todo_changeme1, line): # for testing
-    (srow, scol) = xxx_todo_changeme
-    (erow, ecol) = xxx_todo_changeme1
-    print("%d,%d-%d,%d:\t%s\t%s" % \
-        (srow, scol, erow, ecol, tok_name[type], repr(token)))
-
-def tokenize(readline, tokeneater=printtoken):
-    """
-    The tokenize() function accepts two parameters: one representing the
-    input stream, and one providing an output mechanism for tokenize().
-
-    The first parameter, readline, must be a callable object which provides
-    the same interface as the readline() method of built-in file objects.
-    Each call to the function should return one line of input as a string.
-
-    The second parameter, tokeneater, must also be a callable object. It is
-    called once for each token, with five arguments, corresponding to the
-    tuples generated by generate_tokens().
-    """
-    try:
-        tokenize_loop(readline, tokeneater)
-    except StopTokenizing:
-        pass
-
-# backwards compatible interface
-def tokenize_loop(readline, tokeneater):
-    for token_info in generate_tokens(readline):
-        tokeneater(*token_info)
-
-class Untokenizer:
-
-    def __init__(self):
-        self.tokens = []
-        self.prev_row = 1
-        self.prev_col = 0
-
-    def add_whitespace(self, start):
-        row, col = start
-        assert row <= self.prev_row
-        col_offset = col - self.prev_col
-        if col_offset:
-            self.tokens.append(" " * col_offset)
-
-    def untokenize(self, iterable):
-        for t in iterable:
-            if len(t) == 2:
-                self.compat(t, iterable)
-                break
-            tok_type, token, start, end, line = t
-            self.add_whitespace(start)
-            self.tokens.append(token)
-            self.prev_row, self.prev_col = end
-            if tok_type in (NEWLINE, NL):
-                self.prev_row += 1
-                self.prev_col = 0
-        return "".join(self.tokens)
-
-    def compat(self, token, iterable):
-        startline = False
-        indents = []
-        toks_append = self.tokens.append
-        toknum, tokval = token
-        if toknum in (NAME, NUMBER):
-            tokval += ' '
-        if toknum in (NEWLINE, NL):
-            startline = True
-        for tok in iterable:
-            toknum, tokval = tok[:2]
-
-            if toknum in (NAME, NUMBER, ASYNC, AWAIT):
-                tokval += ' '
-
-            if toknum == INDENT:
-                indents.append(tokval)
-                continue
-            elif toknum == DEDENT:
-                indents.pop()
-                continue
-            elif toknum in (NEWLINE, NL):
-                startline = True
-            elif startline and indents:
-                toks_append(indents[-1])
-                startline = False
-            toks_append(tokval)
-
-cookie_re = re.compile(r'^[ \t\f]*#.*?coding[:=][ \t]*([-\w.]+)', re.ASCII)
-blank_re = re.compile(br'^[ \t\f]*(?:[#\r\n]|$)', re.ASCII)
-
-def _get_normal_name(orig_enc):
-    """Imitates get_normal_name in tokenizer.c."""
-    # Only care about the first 12 characters.
-    enc = orig_enc[:12].lower().replace("_", "-")
-    if enc == "utf-8" or enc.startswith("utf-8-"):
-        return "utf-8"
-    if enc in ("latin-1", "iso-8859-1", "iso-latin-1") or \
-       enc.startswith(("latin-1-", "iso-8859-1-", "iso-latin-1-")):
-        return "iso-8859-1"
-    return orig_enc
-
-def detect_encoding(readline):
-    """
-    The detect_encoding() function is used to detect the encoding that should
-    be used to decode a Python source file. It requires one argument, readline,
-    in the same way as the tokenize() generator.
-
-    It will call readline a maximum of twice, and return the encoding used
-    (as a string) and a list of any lines (left as bytes) it has read
-    in.
-
-    It detects the encoding from the presence of a utf-8 bom or an encoding
-    cookie as specified in pep-0263. If both a bom and a cookie are present, but
-    disagree, a SyntaxError will be raised. If the encoding cookie is an invalid
-    charset, raise a SyntaxError.  Note that if a utf-8 bom is found,
-    'utf-8-sig' is returned.
-
-    If no encoding is specified, then the default of 'utf-8' will be returned.
-    """
-    bom_found = False
-    encoding = None
-    default = 'utf-8'
-    def read_or_stop():
-        try:
-            return readline()
-        except StopIteration:
-            return bytes()
-
-    def find_cookie(line):
-        try:
-            line_string = line.decode('ascii')
-        except UnicodeDecodeError:
-            return None
-        match = cookie_re.match(line_string)
-        if not match:
-            return None
-        encoding = _get_normal_name(match.group(1))
-        try:
-            codec = lookup(encoding)
-        except LookupError:
-            # This behaviour mimics the Python interpreter
-            raise SyntaxError("unknown encoding: " + encoding)
-
-        if bom_found:
-            if codec.name != 'utf-8':
-                # This behaviour mimics the Python interpreter
-                raise SyntaxError('encoding problem: utf-8')
-            encoding += '-sig'
-        return encoding
-
-    first = read_or_stop()
-    if first.startswith(BOM_UTF8):
-        bom_found = True
-        first = first[3:]
-        default = 'utf-8-sig'
-    if not first:
-        return default, []
-
-    encoding = find_cookie(first)
-    if encoding:
-        return encoding, [first]
-    if not blank_re.match(first):
-        return default, [first]
-
-    second = read_or_stop()
-    if not second:
-        return default, [first]
-
-    encoding = find_cookie(second)
-    if encoding:
-        return encoding, [first, second]
-
-    return default, [first, second]
-
-def untokenize(iterable):
-    """Transform tokens back into Python source code.
-
-    Each element returned by the iterable must be a token sequence
-    with at least two elements, a token number and token value.  If
-    only two tokens are passed, the resulting output is poor.
-
-    Round-trip invariant for full input:
-        Untokenized source will match input source exactly
-
-    Round-trip invariant for limited input:
-        # Output text will tokenize the back to the input
-        t1 = [tok[:2] for tok in generate_tokens(f.readline)]
-        newcode = untokenize(t1)
-        readline = iter(newcode.splitlines(1)).next
-        t2 = [tok[:2] for tokin generate_tokens(readline)]
-        assert t1 == t2
-    """
-    ut = Untokenizer()
-    return ut.untokenize(iterable)
-
-def generate_tokens(readline):
-    """
-    The generate_tokens() generator requires one argument, readline, which
-    must be a callable object which provides the same interface as the
-    readline() method of built-in file objects. Each call to the function
-    should return one line of input as a string.  Alternately, readline
-    can be a callable function terminating with StopIteration:
-        readline = open(myfile).next    # Example of alternate readline
-
-    The generator produces 5-tuples with these members: the token type; the
-    token string; a 2-tuple (srow, scol) of ints specifying the row and
-    column where the token begins in the source; a 2-tuple (erow, ecol) of
-    ints specifying the row and column where the token ends in the source;
-    and the line on which the token was found. The line passed is the
-    physical line.
-    """
-    lnum = parenlev = continued = 0
-    contstr, needcont = '', 0
-    contline = None
-    indents = [0]
-
-    # 'stashed' and 'async_*' are used for async/await parsing
-    stashed = None
-    async_def = False
-    async_def_indent = 0
-    async_def_nl = False
-
-    while 1:                                   # loop over lines in stream
-        try:
-            line = readline()
-        except StopIteration:
-            line = ''
-        lnum = lnum + 1
-        pos, max = 0, len(line)
-
-        if contstr:                            # continued string
-            if not line:
-                raise TokenError("EOF in multi-line string", strstart)
-            endmatch = endprog.match(line)
-            if endmatch:
-                pos = end = endmatch.end(0)
-                yield (STRING, contstr + line[:end],
-                       strstart, (lnum, end), contline + line)
-                contstr, needcont = '', 0
-                contline = None
-            elif needcont and line[-2:] != '\\\n' and line[-3:] != '\\\r\n':
-                yield (ERRORTOKEN, contstr + line,
-                           strstart, (lnum, len(line)), contline)
-                contstr = ''
-                contline = None
-                continue
-            else:
-                contstr = contstr + line
-                contline = contline + line
-                continue
-
-        elif parenlev == 0 and not continued:  # new statement
-            if not line: break
-            column = 0
-            while pos < max:                   # measure leading whitespace
-                if line[pos] == ' ': column = column + 1
-                elif line[pos] == '\t': column = (column//tabsize + 1)*tabsize
-                elif line[pos] == '\f': column = 0
-                else: break
-                pos = pos + 1
-            if pos == max: break
-
-            if stashed:
-                yield stashed
-                stashed = None
-
-            if line[pos] in '#\r\n':           # skip comments or blank lines
-                if line[pos] == '#':
-                    comment_token = line[pos:].rstrip('\r\n')
-                    nl_pos = pos + len(comment_token)
-                    yield (COMMENT, comment_token,
-                           (lnum, pos), (lnum, pos + len(comment_token)), line)
-                    yield (NL, line[nl_pos:],
-                           (lnum, nl_pos), (lnum, len(line)), line)
-                else:
-                    yield ((NL, COMMENT)[line[pos] == '#'], line[pos:],
-                           (lnum, pos), (lnum, len(line)), line)
-                continue
-
-            if column > indents[-1]:           # count indents or dedents
-                indents.append(column)
-                yield (INDENT, line[:pos], (lnum, 0), (lnum, pos), line)
-            while column < indents[-1]:
-                if column not in indents:
-                    raise IndentationError(
-                        "unindent does not match any outer indentation level",
-                        ("<tokenize>", lnum, pos, line))
-                indents = indents[:-1]
-
-                if async_def and async_def_indent >= indents[-1]:
-                    async_def = False
-                    async_def_nl = False
-                    async_def_indent = 0
-
-                yield (DEDENT, '', (lnum, pos), (lnum, pos), line)
-
-            if async_def and async_def_nl and async_def_indent >= indents[-1]:
-                async_def = False
-                async_def_nl = False
-                async_def_indent = 0
-
-        else:                                  # continued statement
-            if not line:
-                raise TokenError("EOF in multi-line statement", (lnum, 0))
-            continued = 0
-
-        while pos < max:
-            pseudomatch = pseudoprog.match(line, pos)
-            if pseudomatch:                                # scan for tokens
-                start, end = pseudomatch.span(1)
-                spos, epos, pos = (lnum, start), (lnum, end), end
-                token, initial = line[start:end], line[start]
-
-                if initial in string.digits or \
-                   (initial == '.' and token != '.'):      # ordinary number
-                    yield (NUMBER, token, spos, epos, line)
-                elif initial in '\r\n':
-                    newline = NEWLINE
-                    if parenlev > 0:
-                        newline = NL
-                    elif async_def:
-                        async_def_nl = True
-                    if stashed:
-                        yield stashed
-                        stashed = None
-                    yield (newline, token, spos, epos, line)
-
-                elif initial == '#':
-                    assert not token.endswith("\n")
-                    if stashed:
-                        yield stashed
-                        stashed = None
-                    yield (COMMENT, token, spos, epos, line)
-                elif token in triple_quoted:
-                    endprog = endprogs[token]
-                    endmatch = endprog.match(line, pos)
-                    if endmatch:                           # all on one line
-                        pos = endmatch.end(0)
-                        token = line[start:pos]
-                        if stashed:
-                            yield stashed
-                            stashed = None
-                        yield (STRING, token, spos, (lnum, pos), line)
-                    else:
-                        strstart = (lnum, start)           # multiple lines
-                        contstr = line[start:]
-                        contline = line
-                        break
-                elif initial in single_quoted or \
-                    token[:2] in single_quoted or \
-                    token[:3] in single_quoted:
-                    if token[-1] == '\n':                  # continued string
-                        strstart = (lnum, start)
-                        endprog = (endprogs[initial] or endprogs[token[1]] or
-                                   endprogs[token[2]])
-                        contstr, needcont = line[start:], 1
-                        contline = line
-                        break
-                    else:                                  # ordinary string
-                        if stashed:
-                            yield stashed
-                            stashed = None
-                        yield (STRING, token, spos, epos, line)
-                elif initial.isidentifier():               # ordinary name
-                    if token in ('async', 'await'):
-                        if async_def:
-                            yield (ASYNC if token == 'async' else AWAIT,
-                                   token, spos, epos, line)
-                            continue
-
-                    tok = (NAME, token, spos, epos, line)
-                    if token == 'async' and not stashed:
-                        stashed = tok
-                        continue
-
-                    if token in ('def', 'for'):
-                        if (stashed
-                                and stashed[0] == NAME
-                                and stashed[1] == 'async'):
-
-                            if token == 'def':
-                                async_def = True
-                                async_def_indent = indents[-1]
-
-                            yield (ASYNC, stashed[1],
-                                   stashed[2], stashed[3],
-                                   stashed[4])
-                            stashed = None
-
-                    if stashed:
-                        yield stashed
-                        stashed = None
-
-                    yield tok
-                elif initial == '\\':                      # continued stmt
-                    # This yield is new; needed for better idempotency:
-                    if stashed:
-                        yield stashed
-                        stashed = None
-                    yield (NL, token, spos, (lnum, pos), line)
-                    continued = 1
-                else:
-                    if initial in '([{': parenlev = parenlev + 1
-                    elif initial in ')]}': parenlev = parenlev - 1
-                    if stashed:
-                        yield stashed
-                        stashed = None
-                    yield (OP, token, spos, epos, line)
-            else:
-                yield (ERRORTOKEN, line[pos],
-                           (lnum, pos), (lnum, pos+1), line)
-                pos = pos + 1
-
-    if stashed:
-        yield stashed
-        stashed = None
-
-    for indent in indents[1:]:                 # pop remaining indent levels
-        yield (DEDENT, '', (lnum, 0), (lnum, 0), '')
-    yield (ENDMARKER, '', (lnum, 0), (lnum, 0), '')
-
-if __name__ == '__main__':                     # testing
-    import sys
-    if len(sys.argv) > 1: tokenize(open(sys.argv[1]).readline)
-    else: tokenize(sys.stdin.readline)
diff --git a/Lib/lib2to3/pygram.py b/Lib/lib2to3/pygram.py
deleted file mode 100644
index 24d9db9217f131..00000000000000
--- a/Lib/lib2to3/pygram.py
+++ /dev/null
@@ -1,43 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Export the Python grammar and symbols."""
-
-# Python imports
-import os
-
-# Local imports
-from .pgen2 import token
-from .pgen2 import driver
-from . import pytree
-
-# The grammar file
-_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
-_PATTERN_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__),
-                                     "PatternGrammar.txt")
-
-
-class Symbols(object):
-
-    def __init__(self, grammar):
-        """Initializer.
-
-        Creates an attribute for each grammar symbol (nonterminal),
-        whose value is the symbol's type (an int >= 256).
-        """
-        for name, symbol in grammar.symbol2number.items():
-            setattr(self, name, symbol)
-
-
-python_grammar = driver.load_packaged_grammar("lib2to3", _GRAMMAR_FILE)
-
-python_symbols = Symbols(python_grammar)
-
-python_grammar_no_print_statement = python_grammar.copy()
-del python_grammar_no_print_statement.keywords["print"]
-
-python_grammar_no_print_and_exec_statement = python_grammar_no_print_statement.copy()
-del python_grammar_no_print_and_exec_statement.keywords["exec"]
-
-pattern_grammar = driver.load_packaged_grammar("lib2to3", _PATTERN_GRAMMAR_FILE)
-pattern_symbols = Symbols(pattern_grammar)
diff --git a/Lib/lib2to3/pytree.py b/Lib/lib2to3/pytree.py
deleted file mode 100644
index 729023df0284e1..00000000000000
--- a/Lib/lib2to3/pytree.py
+++ /dev/null
@@ -1,853 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""
-Python parse tree definitions.
-
-This is a very concrete parse tree; we need to keep every token and
-even the comments and whitespace between tokens.
-
-There's also a pattern matching implementation here.
-"""
-
-__author__ = "Guido van Rossum <guido@python.org>"
-
-import sys
-from io import StringIO
-
-HUGE = 0x7FFFFFFF  # maximum repeat count, default max
-
-_type_reprs = {}
-def type_repr(type_num):
-    global _type_reprs
-    if not _type_reprs:
-        from .pygram import python_symbols
-        # printing tokens is possible but not as useful
-        # from .pgen2 import token // token.__dict__.items():
-        for name, val in python_symbols.__dict__.items():
-            if type(val) == int: _type_reprs[val] = name
-    return _type_reprs.setdefault(type_num, type_num)
-
-class Base(object):
-
-    """
-    Abstract base class for Node and Leaf.
-
-    This provides some default functionality and boilerplate using the
-    template pattern.
-
-    A node may be a subnode of at most one parent.
-    """
-
-    # Default values for instance variables
-    type = None    # int: token number (< 256) or symbol number (>= 256)
-    parent = None  # Parent node pointer, or None
-    children = ()  # Tuple of subnodes
-    was_changed = False
-    was_checked = False
-
-    def __new__(cls, *args, **kwds):
-        """Constructor that prevents Base from being instantiated."""
-        assert cls is not Base, "Cannot instantiate Base"
-        return object.__new__(cls)
-
-    def __eq__(self, other):
-        """
-        Compare two nodes for equality.
-
-        This calls the method _eq().
-        """
-        if self.__class__ is not other.__class__:
-            return NotImplemented
-        return self._eq(other)
-
-    __hash__ = None # For Py3 compatibility.
-
-    def _eq(self, other):
-        """
-        Compare two nodes for equality.
-
-        This is called by __eq__ and __ne__.  It is only called if the two nodes
-        have the same type.  This must be implemented by the concrete subclass.
-        Nodes should be considered equal if they have the same structure,
-        ignoring the prefix string and other context information.
-        """
-        raise NotImplementedError
-
-    def clone(self):
-        """
-        Return a cloned (deep) copy of self.
-
-        This must be implemented by the concrete subclass.
-        """
-        raise NotImplementedError
-
-    def post_order(self):
-        """
-        Return a post-order iterator for the tree.
-
-        This must be implemented by the concrete subclass.
-        """
-        raise NotImplementedError
-
-    def pre_order(self):
-        """
-        Return a pre-order iterator for the tree.
-
-        This must be implemented by the concrete subclass.
-        """
-        raise NotImplementedError
-
-    def replace(self, new):
-        """Replace this node with a new one in the parent."""
-        assert self.parent is not None, str(self)
-        assert new is not None
-        if not isinstance(new, list):
-            new = [new]
-        l_children = []
-        found = False
-        for ch in self.parent.children:
-            if ch is self:
-                assert not found, (self.parent.children, self, new)
-                if new is not None:
-                    l_children.extend(new)
-                found = True
-            else:
-                l_children.append(ch)
-        assert found, (self.children, self, new)
-        self.parent.changed()
-        self.parent.children = l_children
-        for x in new:
-            x.parent = self.parent
-        self.parent = None
-
-    def get_lineno(self):
-        """Return the line number which generated the invocant node."""
-        node = self
-        while not isinstance(node, Leaf):
-            if not node.children:
-                return
-            node = node.children[0]
-        return node.lineno
-
-    def changed(self):
-        if self.parent:
-            self.parent.changed()
-        self.was_changed = True
-
-    def remove(self):
-        """
-        Remove the node from the tree. Returns the position of the node in its
-        parent's children before it was removed.
-        """
-        if self.parent:
-            for i, node in enumerate(self.parent.children):
-                if node is self:
-                    self.parent.changed()
-                    del self.parent.children[i]
-                    self.parent = None
-                    return i
-
-    @property
-    def next_sibling(self):
-        """
-        The node immediately following the invocant in their parent's children
-        list. If the invocant does not have a next sibling, it is None
-        """
-        if self.parent is None:
-            return None
-
-        # Can't use index(); we need to test by identity
-        for i, child in enumerate(self.parent.children):
-            if child is self:
-                try:
-                    return self.parent.children[i+1]
-                except IndexError:
-                    return None
-
-    @property
-    def prev_sibling(self):
-        """
-        The node immediately preceding the invocant in their parent's children
-        list. If the invocant does not have a previous sibling, it is None.
-        """
-        if self.parent is None:
-            return None
-
-        # Can't use index(); we need to test by identity
-        for i, child in enumerate(self.parent.children):
-            if child is self:
-                if i == 0:
-                    return None
-                return self.parent.children[i-1]
-
-    def leaves(self):
-        for child in self.children:
-            yield from child.leaves()
-
-    def depth(self):
-        if self.parent is None:
-            return 0
-        return 1 + self.parent.depth()
-
-    def get_suffix(self):
-        """
-        Return the string immediately following the invocant node. This is
-        effectively equivalent to node.next_sibling.prefix
-        """
-        next_sib = self.next_sibling
-        if next_sib is None:
-            return ""
-        return next_sib.prefix
-
-    if sys.version_info < (3, 0):
-        def __str__(self):
-            return str(self).encode("ascii")
-
-class Node(Base):
-
-    """Concrete implementation for interior nodes."""
-
-    def __init__(self,type, children,
-                 context=None,
-                 prefix=None,
-                 fixers_applied=None):
-        """
-        Initializer.
-
-        Takes a type constant (a symbol number >= 256), a sequence of
-        child nodes, and an optional context keyword argument.
-
-        As a side effect, the parent pointers of the children are updated.
-        """
-        assert type >= 256, type
-        self.type = type
-        self.children = list(children)
-        for ch in self.children:
-            assert ch.parent is None, repr(ch)
-            ch.parent = self
-        if prefix is not None:
-            self.prefix = prefix
-        if fixers_applied:
-            self.fixers_applied = fixers_applied[:]
-        else:
-            self.fixers_applied = None
-
-    def __repr__(self):
-        """Return a canonical string representation."""
-        return "%s(%s, %r)" % (self.__class__.__name__,
-                               type_repr(self.type),
-                               self.children)
-
-    def __unicode__(self):
-        """
-        Return a pretty string representation.
-
-        This reproduces the input source exactly.
-        """
-        return "".join(map(str, self.children))
-
-    if sys.version_info > (3, 0):
-        __str__ = __unicode__
-
-    def _eq(self, other):
-        """Compare two nodes for equality."""
-        return (self.type, self.children) == (other.type, other.children)
-
-    def clone(self):
-        """Return a cloned (deep) copy of self."""
-        return Node(self.type, [ch.clone() for ch in self.children],
-                    fixers_applied=self.fixers_applied)
-
-    def post_order(self):
-        """Return a post-order iterator for the tree."""
-        for child in self.children:
-            yield from child.post_order()
-        yield self
-
-    def pre_order(self):
-        """Return a pre-order iterator for the tree."""
-        yield self
-        for child in self.children:
-            yield from child.pre_order()
-
-    @property
-    def prefix(self):
-        """
-        The whitespace and comments preceding this node in the input.
-        """
-        if not self.children:
-            return ""
-        return self.children[0].prefix
-
-    @prefix.setter
-    def prefix(self, prefix):
-        if self.children:
-            self.children[0].prefix = prefix
-
-    def set_child(self, i, child):
-        """
-        Equivalent to 'node.children[i] = child'. This method also sets the
-        child's parent attribute appropriately.
-        """
-        child.parent = self
-        self.children[i].parent = None
-        self.children[i] = child
-        self.changed()
-
-    def insert_child(self, i, child):
-        """
-        Equivalent to 'node.children.insert(i, child)'. This method also sets
-        the child's parent attribute appropriately.
-        """
-        child.parent = self
-        self.children.insert(i, child)
-        self.changed()
-
-    def append_child(self, child):
-        """
-        Equivalent to 'node.children.append(child)'. This method also sets the
-        child's parent attribute appropriately.
-        """
-        child.parent = self
-        self.children.append(child)
-        self.changed()
-
-
-class Leaf(Base):
-
-    """Concrete implementation for leaf nodes."""
-
-    # Default values for instance variables
-    _prefix = ""  # Whitespace and comments preceding this token in the input
-    lineno = 0    # Line where this token starts in the input
-    column = 0    # Column where this token tarts in the input
-
-    def __init__(self, type, value,
-                 context=None,
-                 prefix=None,
-                 fixers_applied=[]):
-        """
-        Initializer.
-
-        Takes a type constant (a token number < 256), a string value, and an
-        optional context keyword argument.
-        """
-        assert 0 <= type < 256, type
-        if context is not None:
-            self._prefix, (self.lineno, self.column) = context
-        self.type = type
-        self.value = value
-        if prefix is not None:
-            self._prefix = prefix
-        self.fixers_applied = fixers_applied[:]
-
-    def __repr__(self):
-        """Return a canonical string representation."""
-        return "%s(%r, %r)" % (self.__class__.__name__,
-                               self.type,
-                               self.value)
-
-    def __unicode__(self):
-        """
-        Return a pretty string representation.
-
-        This reproduces the input source exactly.
-        """
-        return self.prefix + str(self.value)
-
-    if sys.version_info > (3, 0):
-        __str__ = __unicode__
-
-    def _eq(self, other):
-        """Compare two nodes for equality."""
-        return (self.type, self.value) == (other.type, other.value)
-
-    def clone(self):
-        """Return a cloned (deep) copy of self."""
-        return Leaf(self.type, self.value,
-                    (self.prefix, (self.lineno, self.column)),
-                    fixers_applied=self.fixers_applied)
-
-    def leaves(self):
-        yield self
-
-    def post_order(self):
-        """Return a post-order iterator for the tree."""
-        yield self
-
-    def pre_order(self):
-        """Return a pre-order iterator for the tree."""
-        yield self
-
-    @property
-    def prefix(self):
-        """
-        The whitespace and comments preceding this token in the input.
-        """
-        return self._prefix
-
-    @prefix.setter
-    def prefix(self, prefix):
-        self.changed()
-        self._prefix = prefix
-
-def convert(gr, raw_node):
-    """
-    Convert raw node information to a Node or Leaf instance.
-
-    This is passed to the parser driver which calls it whenever a reduction of a
-    grammar rule produces a new complete node, so that the tree is build
-    strictly bottom-up.
-    """
-    type, value, context, children = raw_node
-    if children or type in gr.number2symbol:
-        # If there's exactly one child, return that child instead of
-        # creating a new node.
-        if len(children) == 1:
-            return children[0]
-        return Node(type, children, context=context)
-    else:
-        return Leaf(type, value, context=context)
-
-
-class BasePattern(object):
-
-    """
-    A pattern is a tree matching pattern.
-
-    It looks for a specific node type (token or symbol), and
-    optionally for a specific content.
-
-    This is an abstract base class.  There are three concrete
-    subclasses:
-
-    - LeafPattern matches a single leaf node;
-    - NodePattern matches a single node (usually non-leaf);
-    - WildcardPattern matches a sequence of nodes of variable length.
-    """
-
-    # Defaults for instance variables
-    type = None     # Node type (token if < 256, symbol if >= 256)
-    content = None  # Optional content matching pattern
-    name = None     # Optional name used to store match in results dict
-
-    def __new__(cls, *args, **kwds):
-        """Constructor that prevents BasePattern from being instantiated."""
-        assert cls is not BasePattern, "Cannot instantiate BasePattern"
-        return object.__new__(cls)
-
-    def __repr__(self):
-        args = [type_repr(self.type), self.content, self.name]
-        while args and args[-1] is None:
-            del args[-1]
-        return "%s(%s)" % (self.__class__.__name__, ", ".join(map(repr, args)))
-
-    def optimize(self):
-        """
-        A subclass can define this as a hook for optimizations.
-
-        Returns either self or another node with the same effect.
-        """
-        return self
-
-    def match(self, node, results=None):
-        """
-        Does this pattern exactly match a node?
-
-        Returns True if it matches, False if not.
-
-        If results is not None, it must be a dict which will be
-        updated with the nodes matching named subpatterns.
-
-        Default implementation for non-wildcard patterns.
-        """
-        if self.type is not None and node.type != self.type:
-            return False
-        if self.content is not None:
-            r = None
-            if results is not None:
-                r = {}
-            if not self._submatch(node, r):
-                return False
-            if r:
-                results.update(r)
-        if results is not None and self.name:
-            results[self.name] = node
-        return True
-
-    def match_seq(self, nodes, results=None):
-        """
-        Does this pattern exactly match a sequence of nodes?
-
-        Default implementation for non-wildcard patterns.
-        """
-        if len(nodes) != 1:
-            return False
-        return self.match(nodes[0], results)
-
-    def generate_matches(self, nodes):
-        """
-        Generator yielding all matches for this pattern.
-
-        Default implementation for non-wildcard patterns.
-        """
-        r = {}
-        if nodes and self.match(nodes[0], r):
-            yield 1, r
-
-
-class LeafPattern(BasePattern):
-
-    def __init__(self, type=None, content=None, name=None):
-        """
-        Initializer.  Takes optional type, content, and name.
-
-        The type, if given must be a token type (< 256).  If not given,
-        this matches any *leaf* node; the content may still be required.
-
-        The content, if given, must be a string.
-
-        If a name is given, the matching node is stored in the results
-        dict under that key.
-        """
-        if type is not None:
-            assert 0 <= type < 256, type
-        if content is not None:
-            assert isinstance(content, str), repr(content)
-        self.type = type
-        self.content = content
-        self.name = name
-
-    def match(self, node, results=None):
-        """Override match() to insist on a leaf node."""
-        if not isinstance(node, Leaf):
-            return False
-        return BasePattern.match(self, node, results)
-
-    def _submatch(self, node, results=None):
-        """
-        Match the pattern's content to the node's children.
-
-        This assumes the node type matches and self.content is not None.
-
-        Returns True if it matches, False if not.
-
-        If results is not None, it must be a dict which will be
-        updated with the nodes matching named subpatterns.
-
-        When returning False, the results dict may still be updated.
-        """
-        return self.content == node.value
-
-
-class NodePattern(BasePattern):
-
-    wildcards = False
-
-    def __init__(self, type=None, content=None, name=None):
-        """
-        Initializer.  Takes optional type, content, and name.
-
-        The type, if given, must be a symbol type (>= 256).  If the
-        type is None this matches *any* single node (leaf or not),
-        except if content is not None, in which it only matches
-        non-leaf nodes that also match the content pattern.
-
-        The content, if not None, must be a sequence of Patterns that
-        must match the node's children exactly.  If the content is
-        given, the type must not be None.
-
-        If a name is given, the matching node is stored in the results
-        dict under that key.
-        """
-        if type is not None:
-            assert type >= 256, type
-        if content is not None:
-            assert not isinstance(content, str), repr(content)
-            content = list(content)
-            for i, item in enumerate(content):
-                assert isinstance(item, BasePattern), (i, item)
-                if isinstance(item, WildcardPattern):
-                    self.wildcards = True
-        self.type = type
-        self.content = content
-        self.name = name
-
-    def _submatch(self, node, results=None):
-        """
-        Match the pattern's content to the node's children.
-
-        This assumes the node type matches and self.content is not None.
-
-        Returns True if it matches, False if not.
-
-        If results is not None, it must be a dict which will be
-        updated with the nodes matching named subpatterns.
-
-        When returning False, the results dict may still be updated.
-        """
-        if self.wildcards:
-            for c, r in generate_matches(self.content, node.children):
-                if c == len(node.children):
-                    if results is not None:
-                        results.update(r)
-                    return True
-            return False
-        if len(self.content) != len(node.children):
-            return False
-        for subpattern, child in zip(self.content, node.children):
-            if not subpattern.match(child, results):
-                return False
-        return True
-
-
-class WildcardPattern(BasePattern):
-
-    """
-    A wildcard pattern can match zero or more nodes.
-
-    This has all the flexibility needed to implement patterns like:
-
-    .*      .+      .?      .{m,n}
-    (a b c | d e | f)
-    (...)*  (...)+  (...)?  (...){m,n}
-
-    except it always uses non-greedy matching.
-    """
-
-    def __init__(self, content=None, min=0, max=HUGE, name=None):
-        """
-        Initializer.
-
-        Args:
-            content: optional sequence of subsequences of patterns;
-                     if absent, matches one node;
-                     if present, each subsequence is an alternative [*]
-            min: optional minimum number of times to match, default 0
-            max: optional maximum number of times to match, default HUGE
-            name: optional name assigned to this match
-
-        [*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is
-            equivalent to (a b c | d e | f g h); if content is None,
-            this is equivalent to '.' in regular expression terms.
-            The min and max parameters work as follows:
-                min=0, max=maxint: .*
-                min=1, max=maxint: .+
-                min=0, max=1: .?
-                min=1, max=1: .
-            If content is not None, replace the dot with the parenthesized
-            list of alternatives, e.g. (a b c | d e | f g h)*
-        """
-        assert 0 <= min <= max <= HUGE, (min, max)
-        if content is not None:
-            content = tuple(map(tuple, content))  # Protect against alterations
-            # Check sanity of alternatives
-            assert len(content), repr(content)  # Can't have zero alternatives
-            for alt in content:
-                assert len(alt), repr(alt) # Can have empty alternatives
-        self.content = content
-        self.min = min
-        self.max = max
-        self.name = name
-
-    def optimize(self):
-        """Optimize certain stacked wildcard patterns."""
-        subpattern = None
-        if (self.content is not None and
-            len(self.content) == 1 and len(self.content[0]) == 1):
-            subpattern = self.content[0][0]
-        if self.min == 1 and self.max == 1:
-            if self.content is None:
-                return NodePattern(name=self.name)
-            if subpattern is not None and  self.name == subpattern.name:
-                return subpattern.optimize()
-        if (self.min <= 1 and isinstance(subpattern, WildcardPattern) and
-            subpattern.min <= 1 and self.name == subpattern.name):
-            return WildcardPattern(subpattern.content,
-                                   self.min*subpattern.min,
-                                   self.max*subpattern.max,
-                                   subpattern.name)
-        return self
-
-    def match(self, node, results=None):
-        """Does this pattern exactly match a node?"""
-        return self.match_seq([node], results)
-
-    def match_seq(self, nodes, results=None):
-        """Does this pattern exactly match a sequence of nodes?"""
-        for c, r in self.generate_matches(nodes):
-            if c == len(nodes):
-                if results is not None:
-                    results.update(r)
-                    if self.name:
-                        results[self.name] = list(nodes)
-                return True
-        return False
-
-    def generate_matches(self, nodes):
-        """
-        Generator yielding matches for a sequence of nodes.
-
-        Args:
-            nodes: sequence of nodes
-
-        Yields:
-            (count, results) tuples where:
-            count: the match comprises nodes[:count];
-            results: dict containing named submatches.
-        """
-        if self.content is None:
-            # Shortcut for special case (see __init__.__doc__)
-            for count in range(self.min, 1 + min(len(nodes), self.max)):
-                r = {}
-                if self.name:
-                    r[self.name] = nodes[:count]
-                yield count, r
-        elif self.name == "bare_name":
-            yield self._bare_name_matches(nodes)
-        else:
-            # The reason for this is that hitting the recursion limit usually
-            # results in some ugly messages about how RuntimeErrors are being
-            # ignored. We only have to do this on CPython, though, because other
-            # implementations don't have this nasty bug in the first place.
-            if hasattr(sys, "getrefcount"):
-                save_stderr = sys.stderr
-                sys.stderr = StringIO()
-            try:
-                for count, r in self._recursive_matches(nodes, 0):
-                    if self.name:
-                        r[self.name] = nodes[:count]
-                    yield count, r
-            except RuntimeError:
-                # Fall back to the iterative pattern matching scheme if the
-                # recursive scheme hits the recursion limit (RecursionError).
-                for count, r in self._iterative_matches(nodes):
-                    if self.name:
-                        r[self.name] = nodes[:count]
-                    yield count, r
-            finally:
-                if hasattr(sys, "getrefcount"):
-                    sys.stderr = save_stderr
-
-    def _iterative_matches(self, nodes):
-        """Helper to iteratively yield the matches."""
-        nodelen = len(nodes)
-        if 0 >= self.min:
-            yield 0, {}
-
-        results = []
-        # generate matches that use just one alt from self.content
-        for alt in self.content:
-            for c, r in generate_matches(alt, nodes):
-                yield c, r
-                results.append((c, r))
-
-        # for each match, iterate down the nodes
-        while results:
-            new_results = []
-            for c0, r0 in results:
-                # stop if the entire set of nodes has been matched
-                if c0 < nodelen and c0 <= self.max:
-                    for alt in self.content:
-                        for c1, r1 in generate_matches(alt, nodes[c0:]):
-                            if c1 > 0:
-                                r = {}
-                                r.update(r0)
-                                r.update(r1)
-                                yield c0 + c1, r
-                                new_results.append((c0 + c1, r))
-            results = new_results
-
-    def _bare_name_matches(self, nodes):
-        """Special optimized matcher for bare_name."""
-        count = 0
-        r = {}
-        done = False
-        max = len(nodes)
-        while not done and count < max:
-            done = True
-            for leaf in self.content:
-                if leaf[0].match(nodes[count], r):
-                    count += 1
-                    done = False
-                    break
-        r[self.name] = nodes[:count]
-        return count, r
-
-    def _recursive_matches(self, nodes, count):
-        """Helper to recursively yield the matches."""
-        assert self.content is not None
-        if count >= self.min:
-            yield 0, {}
-        if count < self.max:
-            for alt in self.content:
-                for c0, r0 in generate_matches(alt, nodes):
-                    for c1, r1 in self._recursive_matches(nodes[c0:], count+1):
-                        r = {}
-                        r.update(r0)
-                        r.update(r1)
-                        yield c0 + c1, r
-
-
-class NegatedPattern(BasePattern):
-
-    def __init__(self, content=None):
-        """
-        Initializer.
-
-        The argument is either a pattern or None.  If it is None, this
-        only matches an empty sequence (effectively '$' in regex
-        lingo).  If it is not None, this matches whenever the argument
-        pattern doesn't have any matches.
-        """
-        if content is not None:
-            assert isinstance(content, BasePattern), repr(content)
-        self.content = content
-
-    def match(self, node):
-        # We never match a node in its entirety
-        return False
-
-    def match_seq(self, nodes):
-        # We only match an empty sequence of nodes in its entirety
-        return len(nodes) == 0
-
-    def generate_matches(self, nodes):
-        if self.content is None:
-            # Return a match if there is an empty sequence
-            if len(nodes) == 0:
-                yield 0, {}
-        else:
-            # Return a match if the argument pattern has no matches
-            for c, r in self.content.generate_matches(nodes):
-                return
-            yield 0, {}
-
-
-def generate_matches(patterns, nodes):
-    """
-    Generator yielding matches for a sequence of patterns and nodes.
-
-    Args:
-        patterns: a sequence of patterns
-        nodes: a sequence of nodes
-
-    Yields:
-        (count, results) tuples where:
-        count: the entire sequence of patterns matches nodes[:count];
-        results: dict containing named submatches.
-        """
-    if not patterns:
-        yield 0, {}
-    else:
-        p, rest = patterns[0], patterns[1:]
-        for c0, r0 in p.generate_matches(nodes):
-            if not rest:
-                yield c0, r0
-            else:
-                for c1, r1 in generate_matches(rest, nodes[c0:]):
-                    r = {}
-                    r.update(r0)
-                    r.update(r1)
-                    yield c0 + c1, r
diff --git a/Lib/lib2to3/refactor.py b/Lib/lib2to3/refactor.py
deleted file mode 100644
index 3a5aafffc6df07..00000000000000
--- a/Lib/lib2to3/refactor.py
+++ /dev/null
@@ -1,732 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Refactoring framework.
-
-Used as a main program, this can refactor any number of files and/or
-recursively descend down directories.  Imported as a module, this
-provides infrastructure to write your own refactoring tool.
-"""
-
-__author__ = "Guido van Rossum <guido@python.org>"
-
-
-# Python imports
-import io
-import os
-import pkgutil
-import sys
-import logging
-import operator
-import collections
-from itertools import chain
-
-# Local imports
-from .pgen2 import driver, tokenize, token
-from .fixer_util import find_root
-from . import pytree, pygram
-from . import btm_matcher as bm
-
-
-def get_all_fix_names(fixer_pkg, remove_prefix=True):
-    """Return a sorted list of all available fix names in the given package."""
-    pkg = __import__(fixer_pkg, [], [], ["*"])
-    fix_names = []
-    for finder, name, ispkg in pkgutil.iter_modules(pkg.__path__):
-        if name.startswith("fix_"):
-            if remove_prefix:
-                name = name[4:]
-            fix_names.append(name)
-    return fix_names
-
-
-class _EveryNode(Exception):
-    pass
-
-
-def _get_head_types(pat):
-    """ Accepts a pytree Pattern Node and returns a set
-        of the pattern types which will match first. """
-
-    if isinstance(pat, (pytree.NodePattern, pytree.LeafPattern)):
-        # NodePatters must either have no type and no content
-        #   or a type and content -- so they don't get any farther
-        # Always return leafs
-        if pat.type is None:
-            raise _EveryNode
-        return {pat.type}
-
-    if isinstance(pat, pytree.NegatedPattern):
-        if pat.content:
-            return _get_head_types(pat.content)
-        raise _EveryNode # Negated Patterns don't have a type
-
-    if isinstance(pat, pytree.WildcardPattern):
-        # Recurse on each node in content
-        r = set()
-        for p in pat.content:
-            for x in p:
-                r.update(_get_head_types(x))
-        return r
-
-    raise Exception("Oh no! I don't understand pattern %s" %(pat))
-
-
-def _get_headnode_dict(fixer_list):
-    """ Accepts a list of fixers and returns a dictionary
-        of head node type --> fixer list.  """
-    head_nodes = collections.defaultdict(list)
-    every = []
-    for fixer in fixer_list:
-        if fixer.pattern:
-            try:
-                heads = _get_head_types(fixer.pattern)
-            except _EveryNode:
-                every.append(fixer)
-            else:
-                for node_type in heads:
-                    head_nodes[node_type].append(fixer)
-        else:
-            if fixer._accept_type is not None:
-                head_nodes[fixer._accept_type].append(fixer)
-            else:
-                every.append(fixer)
-    for node_type in chain(pygram.python_grammar.symbol2number.values(),
-                           pygram.python_grammar.tokens):
-        head_nodes[node_type].extend(every)
-    return dict(head_nodes)
-
-
-def get_fixers_from_package(pkg_name):
-    """
-    Return the fully qualified names for fixers in the package pkg_name.
-    """
-    return [pkg_name + "." + fix_name
-            for fix_name in get_all_fix_names(pkg_name, False)]
-
-def _identity(obj):
-    return obj
-
-
-def _detect_future_features(source):
-    have_docstring = False
-    gen = tokenize.generate_tokens(io.StringIO(source).readline)
-    def advance():
-        tok = next(gen)
-        return tok[0], tok[1]
-    ignore = frozenset({token.NEWLINE, tokenize.NL, token.COMMENT})
-    features = set()
-    try:
-        while True:
-            tp, value = advance()
-            if tp in ignore:
-                continue
-            elif tp == token.STRING:
-                if have_docstring:
-                    break
-                have_docstring = True
-            elif tp == token.NAME and value == "from":
-                tp, value = advance()
-                if tp != token.NAME or value != "__future__":
-                    break
-                tp, value = advance()
-                if tp != token.NAME or value != "import":
-                    break
-                tp, value = advance()
-                if tp == token.OP and value == "(":
-                    tp, value = advance()
-                while tp == token.NAME:
-                    features.add(value)
-                    tp, value = advance()
-                    if tp != token.OP or value != ",":
-                        break
-                    tp, value = advance()
-            else:
-                break
-    except StopIteration:
-        pass
-    return frozenset(features)
-
-
-class FixerError(Exception):
-    """A fixer could not be loaded."""
-
-
-class RefactoringTool(object):
-
-    _default_options = {"print_function" : False,
-                        "exec_function": False,
-                        "write_unchanged_files" : False}
-
-    CLASS_PREFIX = "Fix" # The prefix for fixer classes
-    FILE_PREFIX = "fix_" # The prefix for modules with a fixer within
-
-    def __init__(self, fixer_names, options=None, explicit=None):
-        """Initializer.
-
-        Args:
-            fixer_names: a list of fixers to import
-            options: a dict with configuration.
-            explicit: a list of fixers to run even if they are explicit.
-        """
-        self.fixers = fixer_names
-        self.explicit = explicit or []
-        self.options = self._default_options.copy()
-        if options is not None:
-            self.options.update(options)
-        self.grammar = pygram.python_grammar.copy()
-
-        if self.options['print_function']:
-            del self.grammar.keywords["print"]
-        elif self.options['exec_function']:
-            del self.grammar.keywords["exec"]
-
-        # When this is True, the refactor*() methods will call write_file() for
-        # files processed even if they were not changed during refactoring. If
-        # and only if the refactor method's write parameter was True.
-        self.write_unchanged_files = self.options.get("write_unchanged_files")
-        self.errors = []
-        self.logger = logging.getLogger("RefactoringTool")
-        self.fixer_log = []
-        self.wrote = False
-        self.driver = driver.Driver(self.grammar,
-                                    convert=pytree.convert,
-                                    logger=self.logger)
-        self.pre_order, self.post_order = self.get_fixers()
-
-
-        self.files = []  # List of files that were or should be modified
-
-        self.BM = bm.BottomMatcher()
-        self.bmi_pre_order = [] # Bottom Matcher incompatible fixers
-        self.bmi_post_order = []
-
-        for fixer in chain(self.post_order, self.pre_order):
-            if fixer.BM_compatible:
-                self.BM.add_fixer(fixer)
-                # remove fixers that will be handled by the bottom-up
-                # matcher
-            elif fixer in self.pre_order:
-                self.bmi_pre_order.append(fixer)
-            elif fixer in self.post_order:
-                self.bmi_post_order.append(fixer)
-
-        self.bmi_pre_order_heads = _get_headnode_dict(self.bmi_pre_order)
-        self.bmi_post_order_heads = _get_headnode_dict(self.bmi_post_order)
-
-
-
-    def get_fixers(self):
-        """Inspects the options to load the requested patterns and handlers.
-
-        Returns:
-          (pre_order, post_order), where pre_order is the list of fixers that
-          want a pre-order AST traversal, and post_order is the list that want
-          post-order traversal.
-        """
-        pre_order_fixers = []
-        post_order_fixers = []
-        for fix_mod_path in self.fixers:
-            mod = __import__(fix_mod_path, {}, {}, ["*"])
-            fix_name = fix_mod_path.rsplit(".", 1)[-1]
-            if fix_name.startswith(self.FILE_PREFIX):
-                fix_name = fix_name[len(self.FILE_PREFIX):]
-            parts = fix_name.split("_")
-            class_name = self.CLASS_PREFIX + "".join([p.title() for p in parts])
-            try:
-                fix_class = getattr(mod, class_name)
-            except AttributeError:
-                raise FixerError("Can't find %s.%s" % (fix_name, class_name)) from None
-            fixer = fix_class(self.options, self.fixer_log)
-            if fixer.explicit and self.explicit is not True and \
-                    fix_mod_path not in self.explicit:
-                self.log_message("Skipping optional fixer: %s", fix_name)
-                continue
-
-            self.log_debug("Adding transformation: %s", fix_name)
-            if fixer.order == "pre":
-                pre_order_fixers.append(fixer)
-            elif fixer.order == "post":
-                post_order_fixers.append(fixer)
-            else:
-                raise FixerError("Illegal fixer order: %r" % fixer.order)
-
-        key_func = operator.attrgetter("run_order")
-        pre_order_fixers.sort(key=key_func)
-        post_order_fixers.sort(key=key_func)
-        return (pre_order_fixers, post_order_fixers)
-
-    def log_error(self, msg, *args, **kwds):
-        """Called when an error occurs."""
-        raise
-
-    def log_message(self, msg, *args):
-        """Hook to log a message."""
-        if args:
-            msg = msg % args
-        self.logger.info(msg)
-
-    def log_debug(self, msg, *args):
-        if args:
-            msg = msg % args
-        self.logger.debug(msg)
-
-    def print_output(self, old_text, new_text, filename, equal):
-        """Called with the old version, new version, and filename of a
-        refactored file."""
-        pass
-
-    def refactor(self, items, write=False, doctests_only=False):
-        """Refactor a list of files and directories."""
-
-        for dir_or_file in items:
-            if os.path.isdir(dir_or_file):
-                self.refactor_dir(dir_or_file, write, doctests_only)
-            else:
-                self.refactor_file(dir_or_file, write, doctests_only)
-
-    def refactor_dir(self, dir_name, write=False, doctests_only=False):
-        """Descends down a directory and refactor every Python file found.
-
-        Python files are assumed to have a .py extension.
-
-        Files and subdirectories starting with '.' are skipped.
-        """
-        py_ext = os.extsep + "py"
-        for dirpath, dirnames, filenames in os.walk(dir_name):
-            self.log_debug("Descending into %s", dirpath)
-            dirnames.sort()
-            filenames.sort()
-            for name in filenames:
-                if (not name.startswith(".") and
-                    os.path.splitext(name)[1] == py_ext):
-                    fullname = os.path.join(dirpath, name)
-                    self.refactor_file(fullname, write, doctests_only)
-            # Modify dirnames in-place to remove subdirs with leading dots
-            dirnames[:] = [dn for dn in dirnames if not dn.startswith(".")]
-
-    def _read_python_source(self, filename):
-        """
-        Do our best to decode a Python source file correctly.
-        """
-        try:
-            f = open(filename, "rb")
-        except OSError as err:
-            self.log_error("Can't open %s: %s", filename, err)
-            return None, None
-        try:
-            encoding = tokenize.detect_encoding(f.readline)[0]
-        finally:
-            f.close()
-        with io.open(filename, "r", encoding=encoding, newline='') as f:
-            return f.read(), encoding
-
-    def refactor_file(self, filename, write=False, doctests_only=False):
-        """Refactors a file."""
-        input, encoding = self._read_python_source(filename)
-        if input is None:
-            # Reading the file failed.
-            return
-        input += "\n" # Silence certain parse errors
-        if doctests_only:
-            self.log_debug("Refactoring doctests in %s", filename)
-            output = self.refactor_docstring(input, filename)
-            if self.write_unchanged_files or output != input:
-                self.processed_file(output, filename, input, write, encoding)
-            else:
-                self.log_debug("No doctest changes in %s", filename)
-        else:
-            tree = self.refactor_string(input, filename)
-            if self.write_unchanged_files or (tree and tree.was_changed):
-                # The [:-1] is to take off the \n we added earlier
-                self.processed_file(str(tree)[:-1], filename,
-                                    write=write, encoding=encoding)
-            else:
-                self.log_debug("No changes in %s", filename)
-
-    def refactor_string(self, data, name):
-        """Refactor a given input string.
-
-        Args:
-            data: a string holding the code to be refactored.
-            name: a human-readable name for use in error/log messages.
-
-        Returns:
-            An AST corresponding to the refactored input stream; None if
-            there were errors during the parse.
-        """
-        features = _detect_future_features(data)
-        if "print_function" in features:
-            self.driver.grammar = pygram.python_grammar_no_print_statement
-        try:
-            tree = self.driver.parse_string(data)
-        except Exception as err:
-            self.log_error("Can't parse %s: %s: %s",
-                           name, err.__class__.__name__, err)
-            return
-        finally:
-            self.driver.grammar = self.grammar
-        tree.future_features = features
-        self.log_debug("Refactoring %s", name)
-        self.refactor_tree(tree, name)
-        return tree
-
-    def refactor_stdin(self, doctests_only=False):
-        input = sys.stdin.read()
-        if doctests_only:
-            self.log_debug("Refactoring doctests in stdin")
-            output = self.refactor_docstring(input, "<stdin>")
-            if self.write_unchanged_files or output != input:
-                self.processed_file(output, "<stdin>", input)
-            else:
-                self.log_debug("No doctest changes in stdin")
-        else:
-            tree = self.refactor_string(input, "<stdin>")
-            if self.write_unchanged_files or (tree and tree.was_changed):
-                self.processed_file(str(tree), "<stdin>", input)
-            else:
-                self.log_debug("No changes in stdin")
-
-    def refactor_tree(self, tree, name):
-        """Refactors a parse tree (modifying the tree in place).
-
-        For compatible patterns the bottom matcher module is
-        used. Otherwise the tree is traversed node-to-node for
-        matches.
-
-        Args:
-            tree: a pytree.Node instance representing the root of the tree
-                  to be refactored.
-            name: a human-readable name for this tree.
-
-        Returns:
-            True if the tree was modified, False otherwise.
-        """
-
-        for fixer in chain(self.pre_order, self.post_order):
-            fixer.start_tree(tree, name)
-
-        #use traditional matching for the incompatible fixers
-        self.traverse_by(self.bmi_pre_order_heads, tree.pre_order())
-        self.traverse_by(self.bmi_post_order_heads, tree.post_order())
-
-        # obtain a set of candidate nodes
-        match_set = self.BM.run(tree.leaves())
-
-        while any(match_set.values()):
-            for fixer in self.BM.fixers:
-                if fixer in match_set and match_set[fixer]:
-                    #sort by depth; apply fixers from bottom(of the AST) to top
-                    match_set[fixer].sort(key=pytree.Base.depth, reverse=True)
-
-                    if fixer.keep_line_order:
-                        #some fixers(eg fix_imports) must be applied
-                        #with the original file's line order
-                        match_set[fixer].sort(key=pytree.Base.get_lineno)
-
-                    for node in list(match_set[fixer]):
-                        if node in match_set[fixer]:
-                            match_set[fixer].remove(node)
-
-                        try:
-                            find_root(node)
-                        except ValueError:
-                            # this node has been cut off from a
-                            # previous transformation ; skip
-                            continue
-
-                        if node.fixers_applied and fixer in node.fixers_applied:
-                            # do not apply the same fixer again
-                            continue
-
-                        results = fixer.match(node)
-
-                        if results:
-                            new = fixer.transform(node, results)
-                            if new is not None:
-                                node.replace(new)
-                                #new.fixers_applied.append(fixer)
-                                for node in new.post_order():
-                                    # do not apply the fixer again to
-                                    # this or any subnode
-                                    if not node.fixers_applied:
-                                        node.fixers_applied = []
-                                    node.fixers_applied.append(fixer)
-
-                                # update the original match set for
-                                # the added code
-                                new_matches = self.BM.run(new.leaves())
-                                for fxr in new_matches:
-                                    if not fxr in match_set:
-                                        match_set[fxr]=[]
-
-                                    match_set[fxr].extend(new_matches[fxr])
-
-        for fixer in chain(self.pre_order, self.post_order):
-            fixer.finish_tree(tree, name)
-        return tree.was_changed
-
-    def traverse_by(self, fixers, traversal):
-        """Traverse an AST, applying a set of fixers to each node.
-
-        This is a helper method for refactor_tree().
-
-        Args:
-            fixers: a list of fixer instances.
-            traversal: a generator that yields AST nodes.
-
-        Returns:
-            None
-        """
-        if not fixers:
-            return
-        for node in traversal:
-            for fixer in fixers[node.type]:
-                results = fixer.match(node)
-                if results:
-                    new = fixer.transform(node, results)
-                    if new is not None:
-                        node.replace(new)
-                        node = new
-
-    def processed_file(self, new_text, filename, old_text=None, write=False,
-                       encoding=None):
-        """
-        Called when a file has been refactored and there may be changes.
-        """
-        self.files.append(filename)
-        if old_text is None:
-            old_text = self._read_python_source(filename)[0]
-            if old_text is None:
-                return
-        equal = old_text == new_text
-        self.print_output(old_text, new_text, filename, equal)
-        if equal:
-            self.log_debug("No changes to %s", filename)
-            if not self.write_unchanged_files:
-                return
-        if write:
-            self.write_file(new_text, filename, old_text, encoding)
-        else:
-            self.log_debug("Not writing changes to %s", filename)
-
-    def write_file(self, new_text, filename, old_text, encoding=None):
-        """Writes a string to a file.
-
-        It first shows a unified diff between the old text and the new text, and
-        then rewrites the file; the latter is only done if the write option is
-        set.
-        """
-        try:
-            fp = io.open(filename, "w", encoding=encoding, newline='')
-        except OSError as err:
-            self.log_error("Can't create %s: %s", filename, err)
-            return
-
-        with fp:
-            try:
-                fp.write(new_text)
-            except OSError as err:
-                self.log_error("Can't write %s: %s", filename, err)
-        self.log_debug("Wrote changes to %s", filename)
-        self.wrote = True
-
-    PS1 = ">>> "
-    PS2 = "... "
-
-    def refactor_docstring(self, input, filename):
-        """Refactors a docstring, looking for doctests.
-
-        This returns a modified version of the input string.  It looks
-        for doctests, which start with a ">>>" prompt, and may be
-        continued with "..." prompts, as long as the "..." is indented
-        the same as the ">>>".
-
-        (Unfortunately we can't use the doctest module's parser,
-        since, like most parsers, it is not geared towards preserving
-        the original source.)
-        """
-        result = []
-        block = None
-        block_lineno = None
-        indent = None
-        lineno = 0
-        for line in input.splitlines(keepends=True):
-            lineno += 1
-            if line.lstrip().startswith(self.PS1):
-                if block is not None:
-                    result.extend(self.refactor_doctest(block, block_lineno,
-                                                        indent, filename))
-                block_lineno = lineno
-                block = [line]
-                i = line.find(self.PS1)
-                indent = line[:i]
-            elif (indent is not None and
-                  (line.startswith(indent + self.PS2) or
-                   line == indent + self.PS2.rstrip() + "\n")):
-                block.append(line)
-            else:
-                if block is not None:
-                    result.extend(self.refactor_doctest(block, block_lineno,
-                                                        indent, filename))
-                block = None
-                indent = None
-                result.append(line)
-        if block is not None:
-            result.extend(self.refactor_doctest(block, block_lineno,
-                                                indent, filename))
-        return "".join(result)
-
-    def refactor_doctest(self, block, lineno, indent, filename):
-        """Refactors one doctest.
-
-        A doctest is given as a block of lines, the first of which starts
-        with ">>>" (possibly indented), while the remaining lines start
-        with "..." (identically indented).
-
-        """
-        try:
-            tree = self.parse_block(block, lineno, indent)
-        except Exception as err:
-            if self.logger.isEnabledFor(logging.DEBUG):
-                for line in block:
-                    self.log_debug("Source: %s", line.rstrip("\n"))
-            self.log_error("Can't parse docstring in %s line %s: %s: %s",
-                           filename, lineno, err.__class__.__name__, err)
-            return block
-        if self.refactor_tree(tree, filename):
-            new = str(tree).splitlines(keepends=True)
-            # Undo the adjustment of the line numbers in wrap_toks() below.
-            clipped, new = new[:lineno-1], new[lineno-1:]
-            assert clipped == ["\n"] * (lineno-1), clipped
-            if not new[-1].endswith("\n"):
-                new[-1] += "\n"
-            block = [indent + self.PS1 + new.pop(0)]
-            if new:
-                block += [indent + self.PS2 + line for line in new]
-        return block
-
-    def summarize(self):
-        if self.wrote:
-            were = "were"
-        else:
-            were = "need to be"
-        if not self.files:
-            self.log_message("No files %s modified.", were)
-        else:
-            self.log_message("Files that %s modified:", were)
-            for file in self.files:
-                self.log_message(file)
-        if self.fixer_log:
-            self.log_message("Warnings/messages while refactoring:")
-            for message in self.fixer_log:
-                self.log_message(message)
-        if self.errors:
-            if len(self.errors) == 1:
-                self.log_message("There was 1 error:")
-            else:
-                self.log_message("There were %d errors:", len(self.errors))
-            for msg, args, kwds in self.errors:
-                self.log_message(msg, *args, **kwds)
-
-    def parse_block(self, block, lineno, indent):
-        """Parses a block into a tree.
-
-        This is necessary to get correct line number / offset information
-        in the parser diagnostics and embedded into the parse tree.
-        """
-        tree = self.driver.parse_tokens(self.wrap_toks(block, lineno, indent))
-        tree.future_features = frozenset()
-        return tree
-
-    def wrap_toks(self, block, lineno, indent):
-        """Wraps a tokenize stream to systematically modify start/end."""
-        tokens = tokenize.generate_tokens(self.gen_lines(block, indent).__next__)
-        for type, value, (line0, col0), (line1, col1), line_text in tokens:
-            line0 += lineno - 1
-            line1 += lineno - 1
-            # Don't bother updating the columns; this is too complicated
-            # since line_text would also have to be updated and it would
-            # still break for tokens spanning lines.  Let the user guess
-            # that the column numbers for doctests are relative to the
-            # end of the prompt string (PS1 or PS2).
-            yield type, value, (line0, col0), (line1, col1), line_text
-
-
-    def gen_lines(self, block, indent):
-        """Generates lines as expected by tokenize from a list of lines.
-
-        This strips the first len(indent + self.PS1) characters off each line.
-        """
-        prefix1 = indent + self.PS1
-        prefix2 = indent + self.PS2
-        prefix = prefix1
-        for line in block:
-            if line.startswith(prefix):
-                yield line[len(prefix):]
-            elif line == prefix.rstrip() + "\n":
-                yield "\n"
-            else:
-                raise AssertionError("line=%r, prefix=%r" % (line, prefix))
-            prefix = prefix2
-        while True:
-            yield ""
-
-
-class MultiprocessingUnsupported(Exception):
-    pass
-
-
-class MultiprocessRefactoringTool(RefactoringTool):
-
-    def __init__(self, *args, **kwargs):
-        super(MultiprocessRefactoringTool, self).__init__(*args, **kwargs)
-        self.queue = None
-        self.output_lock = None
-
-    def refactor(self, items, write=False, doctests_only=False,
-                 num_processes=1):
-        if num_processes == 1:
-            return super(MultiprocessRefactoringTool, self).refactor(
-                items, write, doctests_only)
-        try:
-            import multiprocessing
-        except ImportError:
-            raise MultiprocessingUnsupported
-        if self.queue is not None:
-            raise RuntimeError("already doing multiple processes")
-        self.queue = multiprocessing.JoinableQueue()
-        self.output_lock = multiprocessing.Lock()
-        processes = [multiprocessing.Process(target=self._child)
-                     for i in range(num_processes)]
-        try:
-            for p in processes:
-                p.start()
-            super(MultiprocessRefactoringTool, self).refactor(items, write,
-                                                              doctests_only)
-        finally:
-            self.queue.join()
-            for i in range(num_processes):
-                self.queue.put(None)
-            for p in processes:
-                if p.is_alive():
-                    p.join()
-            self.queue = None
-
-    def _child(self):
-        task = self.queue.get()
-        while task is not None:
-            args, kwargs = task
-            try:
-                super(MultiprocessRefactoringTool, self).refactor_file(
-                    *args, **kwargs)
-            finally:
-                self.queue.task_done()
-            task = self.queue.get()
-
-    def refactor_file(self, *args, **kwargs):
-        if self.queue is not None:
-            self.queue.put((args, kwargs))
-        else:
-            return super(MultiprocessRefactoringTool, self).refactor_file(
-                *args, **kwargs)
diff --git a/Lib/linecache.py b/Lib/linecache.py
index 97644a8e3794e1..329a14053458b7 100644
--- a/Lib/linecache.py
+++ b/Lib/linecache.py
@@ -5,10 +5,8 @@
 that name.
 """
 
-import functools
 import sys
 import os
-import tokenize
 
 __all__ = ["getline", "clearcache", "checkcache", "lazycache"]
 
@@ -82,6 +80,8 @@ def updatecache(filename, module_globals=None):
     If something's wrong, print a message, discard the cache entry,
     and return an empty list."""
 
+    import tokenize
+
     if filename in cache:
         if len(cache[filename]) != 1:
             cache.pop(filename, None)
@@ -176,7 +176,16 @@ def lazycache(filename, module_globals):
         get_source = getattr(loader, 'get_source', None)
 
         if name and get_source:
-            get_lines = functools.partial(get_source, name)
+            def get_lines(name=name, *args, **kwargs):
+                return get_source(name, *args, **kwargs)
             cache[filename] = (get_lines,)
             return True
     return False
+
+
+def _register_code(code, string, name):
+    cache[code] = (
+            len(string),
+            None,
+            [line + '\n' for line in string.splitlines()],
+            name)
diff --git a/Lib/locale.py b/Lib/locale.py
index e94f0d1acbaa7d..e0cb4c5449d556 100644
--- a/Lib/locale.py
+++ b/Lib/locale.py
@@ -25,7 +25,7 @@
 # Yuck:  LC_MESSAGES is non-standard:  can't tell whether it exists before
 # trying the import.  So __all__ is also fiddled at the end of the file.
 __all__ = ["getlocale", "getdefaultlocale", "getpreferredencoding", "Error",
-           "setlocale", "resetlocale", "localeconv", "strcoll", "strxfrm",
+           "setlocale", "localeconv", "strcoll", "strxfrm",
            "str", "atof", "atoi", "format_string", "currency",
            "normalize", "LC_CTYPE", "LC_COLLATE", "LC_TIME", "LC_MONETARY",
            "LC_NUMERIC", "LC_ALL", "CHAR_MAX", "getencoding"]
@@ -541,12 +541,14 @@ def getdefaultlocale(envvars=('LC_ALL', 'LC_CTYPE', 'LANG', 'LANGUAGE')):
     """
 
     import warnings
-    warnings.warn(
-        "Use setlocale(), getencoding() and getlocale() instead",
-        DeprecationWarning, stacklevel=2
-    )
+    warnings._deprecated(
+        "locale.getdefaultlocale",
+        "{name!r} is deprecated and slated for removal in Python {remove}. "
+        "Use setlocale(), getencoding() and getlocale() instead.",
+        remove=(3, 15))
     return _getdefaultlocale(envvars)
 
+
 def _getdefaultlocale(envvars=('LC_ALL', 'LC_CTYPE', 'LANG', 'LANGUAGE')):
     try:
         # check if it's supported by the _locale module
@@ -612,40 +614,15 @@ def setlocale(category, locale=None):
         locale = normalize(_build_localename(locale))
     return _setlocale(category, locale)
 
-def resetlocale(category=LC_ALL):
-
-    """ Sets the locale for category to the default setting.
-
-        The default setting is determined by calling
-        getdefaultlocale(). category defaults to LC_ALL.
-
-    """
-    import warnings
-    warnings.warn(
-        'Use locale.setlocale(locale.LC_ALL, "") instead',
-        DeprecationWarning, stacklevel=2
-    )
-
-    with warnings.catch_warnings():
-        warnings.simplefilter('ignore', category=DeprecationWarning)
-        loc = getdefaultlocale()
-
-    _setlocale(category, _build_localename(loc))
-
 
 try:
     from _locale import getencoding
 except ImportError:
+    # When _locale.getencoding() is missing, locale.getencoding() uses the
+    # Python filesystem encoding.
     def getencoding():
-        if hasattr(sys, 'getandroidapilevel'):
-            # On Android langinfo.h and CODESET are missing, and UTF-8 is
-            # always used in mbstowcs() and wcstombs().
-            return 'utf-8'
-        encoding = _getdefaultlocale()[1]
-        if encoding is None:
-            # LANG not set, default to UTF-8
-            encoding = 'utf-8'
-        return encoding
+        return sys.getfilesystemencoding()
+
 
 try:
     CODESET
@@ -1729,17 +1706,6 @@ def _init_categories(categories=categories):
         print('   Encoding: ', enc or '(undefined)')
         print()
 
-    print()
-    print('Locale settings after calling resetlocale():')
-    print('-'*72)
-    resetlocale()
-    for name,category in categories.items():
-        print(name, '...')
-        lang, enc = getlocale(category)
-        print('   Language: ', lang or '(undefined)')
-        print('   Encoding: ', enc or '(undefined)')
-        print()
-
     try:
         setlocale(LC_ALL, "")
     except:
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index 056380fb2287af..eb7e020d1edfc0 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -37,7 +37,7 @@
            'captureWarnings', 'critical', 'debug', 'disable', 'error',
            'exception', 'fatal', 'getLevelName', 'getLogger', 'getLoggerClass',
            'info', 'log', 'makeLogRecord', 'setLoggerClass', 'shutdown',
-           'warn', 'warning', 'getLogRecordFactory', 'setLogRecordFactory',
+           'warning', 'getLogRecordFactory', 'setLogRecordFactory',
            'lastResort', 'raiseExceptions', 'getLevelNamesMapping',
            'getHandlerByName', 'getHandlerNames']
 
@@ -159,12 +159,9 @@ def addLevelName(level, levelName):
 
     This is used when converting levels to text during message formatting.
     """
-    _acquireLock()
-    try:    #unlikely to cause an exception, but you never know...
+    with _lock:
         _levelToName[level] = levelName
         _nameToLevel[levelName] = level
-    finally:
-        _releaseLock()
 
 if hasattr(sys, "_getframe"):
     currentframe = lambda: sys._getframe(1)
@@ -231,21 +228,27 @@ def _checkLevel(level):
 #
 _lock = threading.RLock()
 
-def _acquireLock():
+def _prepareFork():
     """
-    Acquire the module-level lock for serializing access to shared data.
+    Prepare to fork a new child process by acquiring the module-level lock.
 
-    This should be released with _releaseLock().
+    This should be used in conjunction with _afterFork().
     """
-    if _lock:
+    # Wrap the lock acquisition in a try-except to prevent the lock from being
+    # abandoned in the event of an asynchronous exception. See gh-106238.
+    try:
         _lock.acquire()
+    except BaseException:
+        _lock.release()
+        raise
 
-def _releaseLock():
+def _afterFork():
     """
-    Release the module-level lock acquired by calling _acquireLock().
+    After a new child process has been forked, release the module-level lock.
+
+    This should be used in conjunction with _prepareFork().
     """
-    if _lock:
-        _lock.release()
+    _lock.release()
 
 
 # Prevent a held logging lock from blocking a child from logging.
@@ -260,23 +263,20 @@ def _register_at_fork_reinit_lock(instance):
     _at_fork_reinit_lock_weakset = weakref.WeakSet()
 
     def _register_at_fork_reinit_lock(instance):
-        _acquireLock()
-        try:
+        with _lock:
             _at_fork_reinit_lock_weakset.add(instance)
-        finally:
-            _releaseLock()
 
     def _after_at_fork_child_reinit_locks():
         for handler in _at_fork_reinit_lock_weakset:
             handler._at_fork_reinit()
 
-        # _acquireLock() was called in the parent before forking.
+        # _prepareFork() was called in the parent before forking.
         # The lock is reinitialized to unlocked state.
         _lock._at_fork_reinit()
 
-    os.register_at_fork(before=_acquireLock,
+    os.register_at_fork(before=_prepareFork,
                         after_in_child=_after_at_fork_child_reinit_locks,
-                        after_in_parent=_releaseLock)
+                        after_in_parent=_afterFork)
 
 
 #---------------------------------------------------------------------------
@@ -658,7 +658,7 @@ def formatException(self, ei):
         # See issues #9427, #1553375. Commented out for now.
         #if getattr(self, 'fullstack', False):
         #    traceback.print_stack(tb.tb_frame.f_back, file=sio)
-        traceback.print_exception(ei[0], ei[1], tb, None, sio)
+        traceback.print_exception(ei[0], ei[1], tb, limit=None, file=sio)
         s = sio.getvalue()
         sio.close()
         if s[-1:] == "\n":
@@ -879,25 +879,20 @@ def _removeHandlerRef(wr):
     # set to None. It can also be called from another thread. So we need to
     # pre-emptively grab the necessary globals and check if they're None,
     # to prevent race conditions and failures during interpreter shutdown.
-    acquire, release, handlers = _acquireLock, _releaseLock, _handlerList
-    if acquire and release and handlers:
-        acquire()
-        try:
-            handlers.remove(wr)
-        except ValueError:
-            pass
-        finally:
-            release()
+    handlers, lock = _handlerList, _lock
+    if lock and handlers:
+        with lock:
+            try:
+                handlers.remove(wr)
+            except ValueError:
+                pass
 
 def _addHandlerRef(handler):
     """
     Add a handler to the internal cleanup list using a weak reference.
     """
-    _acquireLock()
-    try:
+    with _lock:
         _handlerList.append(weakref.ref(handler, _removeHandlerRef))
-    finally:
-        _releaseLock()
 
 
 def getHandlerByName(name):
@@ -912,8 +907,7 @@ def getHandlerNames():
     """
     Return all known handler names as an immutable set.
     """
-    result = set(_handlers.keys())
-    return frozenset(result)
+    return frozenset(_handlers)
 
 
 class Handler(Filterer):
@@ -943,15 +937,12 @@ def get_name(self):
         return self._name
 
     def set_name(self, name):
-        _acquireLock()
-        try:
+        with _lock:
             if self._name in _handlers:
                 del _handlers[self._name]
             self._name = name
             if name:
                 _handlers[name] = self
-        finally:
-            _releaseLock()
 
     name = property(get_name, set_name)
 
@@ -1023,11 +1014,8 @@ def handle(self, record):
         if isinstance(rv, LogRecord):
             record = rv
         if rv:
-            self.acquire()
-            try:
+            with self.lock:
                 self.emit(record)
-            finally:
-                self.release()
         return rv
 
     def setFormatter(self, fmt):
@@ -1055,13 +1043,10 @@ def close(self):
         methods.
         """
         #get the module data lock, as we're updating a shared structure.
-        _acquireLock()
-        try:    #unlikely to raise an exception, but you never know...
+        with _lock:
             self._closed = True
             if self._name and self._name in _handlers:
                 del _handlers[self._name]
-        finally:
-            _releaseLock()
 
     def handleError(self, record):
         """
@@ -1076,14 +1061,14 @@ def handleError(self, record):
         The record which was being processed is passed in to this method.
         """
         if raiseExceptions and sys.stderr:  # see issue 13807
-            t, v, tb = sys.exc_info()
+            exc = sys.exception()
             try:
                 sys.stderr.write('--- Logging error ---\n')
-                traceback.print_exception(t, v, tb, None, sys.stderr)
+                traceback.print_exception(exc, limit=None, file=sys.stderr)
                 sys.stderr.write('Call stack:\n')
                 # Walk the stack frame up until we're out of logging,
                 # so as to print the calling context.
-                frame = tb.tb_frame
+                frame = exc.__traceback__.tb_frame
                 while (frame and os.path.dirname(frame.f_code.co_filename) ==
                        __path__[0]):
                     frame = frame.f_back
@@ -1108,7 +1093,7 @@ def handleError(self, record):
             except OSError: #pragma: no cover
                 pass    # see issue 5971
             finally:
-                del t, v, tb
+                del exc
 
     def __repr__(self):
         level = getLevelName(self.level)
@@ -1138,12 +1123,9 @@ def flush(self):
         """
         Flushes the stream.
         """
-        self.acquire()
-        try:
+        with self.lock:
             if self.stream and hasattr(self.stream, "flush"):
                 self.stream.flush()
-        finally:
-            self.release()
 
     def emit(self, record):
         """
@@ -1179,12 +1161,9 @@ def setStream(self, stream):
             result = None
         else:
             result = self.stream
-            self.acquire()
-            try:
+            with self.lock:
                 self.flush()
                 self.stream = stream
-            finally:
-                self.release()
         return result
 
     def __repr__(self):
@@ -1234,8 +1213,7 @@ def close(self):
         """
         Closes the stream.
         """
-        self.acquire()
-        try:
+        with self.lock:
             try:
                 if self.stream:
                     try:
@@ -1251,8 +1229,6 @@ def close(self):
                 # Also see Issue #42378: we also rely on
                 # self._closed being set to True there
                 StreamHandler.close(self)
-        finally:
-            self.release()
 
     def _open(self):
         """
@@ -1388,8 +1364,7 @@ def getLogger(self, name):
         rv = None
         if not isinstance(name, str):
             raise TypeError('A logger name must be a string')
-        _acquireLock()
-        try:
+        with _lock:
             if name in self.loggerDict:
                 rv = self.loggerDict[name]
                 if isinstance(rv, PlaceHolder):
@@ -1404,8 +1379,6 @@ def getLogger(self, name):
                 rv.manager = self
                 self.loggerDict[name] = rv
                 self._fixupParents(rv)
-        finally:
-            _releaseLock()
         return rv
 
     def setLoggerClass(self, klass):
@@ -1468,12 +1441,11 @@ def _clear_cache(self):
         Called when level changes are made
         """
 
-        _acquireLock()
-        for logger in self.loggerDict.values():
-            if isinstance(logger, Logger):
-                logger._cache.clear()
-        self.root._cache.clear()
-        _releaseLock()
+        with _lock:
+            for logger in self.loggerDict.values():
+                if isinstance(logger, Logger):
+                    logger._cache.clear()
+            self.root._cache.clear()
 
 #---------------------------------------------------------------------------
 #   Logger classes and functions
@@ -1550,11 +1522,6 @@ def warning(self, msg, *args, **kwargs):
         if self.isEnabledFor(WARNING):
             self._log(WARNING, msg, args, **kwargs)
 
-    def warn(self, msg, *args, **kwargs):
-        warnings.warn("The 'warn' method is deprecated, "
-            "use 'warning' instead", DeprecationWarning, 2)
-        self.warning(msg, *args, **kwargs)
-
     def error(self, msg, *args, **kwargs):
         """
         Log 'msg % args' with severity 'ERROR'.
@@ -1703,23 +1670,17 @@ def addHandler(self, hdlr):
         """
         Add the specified handler to this logger.
         """
-        _acquireLock()
-        try:
+        with _lock:
             if not (hdlr in self.handlers):
                 self.handlers.append(hdlr)
-        finally:
-            _releaseLock()
 
     def removeHandler(self, hdlr):
         """
         Remove the specified handler from this logger.
         """
-        _acquireLock()
-        try:
+        with _lock:
             if hdlr in self.handlers:
                 self.handlers.remove(hdlr)
-        finally:
-            _releaseLock()
 
     def hasHandlers(self):
         """
@@ -1797,16 +1758,13 @@ def isEnabledFor(self, level):
         try:
             return self._cache[level]
         except KeyError:
-            _acquireLock()
-            try:
+            with _lock:
                 if self.manager.disable >= level:
                     is_enabled = self._cache[level] = False
                 else:
                     is_enabled = self._cache[level] = (
                         level >= self.getEffectiveLevel()
                     )
-            finally:
-                _releaseLock()
             return is_enabled
 
     def getChild(self, suffix):
@@ -1836,16 +1794,13 @@ def _hierlevel(logger):
             return 1 + logger.name.count('.')
 
         d = self.manager.loggerDict
-        _acquireLock()
-        try:
+        with _lock:
             # exclude PlaceHolders - the last check is to ensure that lower-level
             # descendants aren't returned - if there are placeholders, a logger's
             # parent field might point to a grandparent or ancestor thereof.
             return set(item for item in d.values()
                        if isinstance(item, Logger) and item.parent is self and
                        _hierlevel(item) == 1 + _hierlevel(item.parent))
-        finally:
-            _releaseLock()
 
     def __repr__(self):
         level = getLevelName(self.getEffectiveLevel())
@@ -1881,7 +1836,7 @@ class LoggerAdapter(object):
     information in logging output.
     """
 
-    def __init__(self, logger, extra=None):
+    def __init__(self, logger, extra=None, merge_extra=False):
         """
         Initialize the adapter with a logger and a dict-like object which
         provides contextual information. This constructor signature allows
@@ -1891,9 +1846,20 @@ def __init__(self, logger, extra=None):
         following example:
 
         adapter = LoggerAdapter(someLogger, dict(p1=v1, p2="v2"))
+
+        By default, LoggerAdapter objects will drop the "extra" argument
+        passed on the individual log calls to use its own instead.
+
+        Initializing it with merge_extra=True will instead merge both
+        maps when logging, the individual call extra taking precedence
+        over the LoggerAdapter instance extra
+
+        .. versionchanged:: 3.13
+           The *merge_extra* argument was added.
         """
         self.logger = logger
         self.extra = extra
+        self.merge_extra = merge_extra
 
     def process(self, msg, kwargs):
         """
@@ -1905,7 +1871,10 @@ def process(self, msg, kwargs):
         Normally, you'll only need to override this one method in a
         LoggerAdapter subclass for your specific needs.
         """
-        kwargs["extra"] = self.extra
+        if self.merge_extra and "extra" in kwargs:
+            kwargs["extra"] = {**self.extra, **kwargs["extra"]}
+        else:
+            kwargs["extra"] = self.extra
         return msg, kwargs
 
     #
@@ -1929,11 +1898,6 @@ def warning(self, msg, *args, **kwargs):
         """
         self.log(WARNING, msg, *args, **kwargs)
 
-    def warn(self, msg, *args, **kwargs):
-        warnings.warn("The 'warn' method is deprecated, "
-            "use 'warning' instead", DeprecationWarning, 2)
-        self.warning(msg, *args, **kwargs)
-
     def error(self, msg, *args, **kwargs):
         """
         Delegate an error call to the underlying logger.
@@ -2095,8 +2059,7 @@ def basicConfig(**kwargs):
     """
     # Add thread safety in case someone mistakenly calls
     # basicConfig() from multiple threads
-    _acquireLock()
-    try:
+    with _lock:
         force = kwargs.pop('force', False)
         encoding = kwargs.pop('encoding', None)
         errors = kwargs.pop('errors', 'backslashreplace')
@@ -2145,8 +2108,6 @@ def basicConfig(**kwargs):
             if kwargs:
                 keys = ', '.join(kwargs.keys())
                 raise ValueError('Unrecognised argument(s): %s' % keys)
-    finally:
-        _releaseLock()
 
 #---------------------------------------------------------------------------
 # Utility functions at module level.
@@ -2207,11 +2168,6 @@ def warning(msg, *args, **kwargs):
         basicConfig()
     root.warning(msg, *args, **kwargs)
 
-def warn(msg, *args, **kwargs):
-    warnings.warn("The 'warn' function is deprecated, "
-        "use 'warning' instead", DeprecationWarning, 2)
-    warning(msg, *args, **kwargs)
-
 def info(msg, *args, **kwargs):
     """
     Log a message with severity 'INFO' on the root logger. If the logger has
diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index 16c54a6a4f7a2f..4b520e3b1e0da6 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -29,6 +29,7 @@
 import io
 import logging
 import logging.handlers
+import os
 import queue
 import re
 import struct
@@ -60,28 +61,34 @@ def fileConfig(fname, defaults=None, disable_existing_loggers=True, encoding=Non
     """
     import configparser
 
+    if isinstance(fname, str):
+        if not os.path.exists(fname):
+            raise FileNotFoundError(f"{fname} doesn't exist")
+        elif not os.path.getsize(fname):
+            raise RuntimeError(f'{fname} is an empty file')
+
     if isinstance(fname, configparser.RawConfigParser):
         cp = fname
     else:
-        cp = configparser.ConfigParser(defaults)
-        if hasattr(fname, 'readline'):
-            cp.read_file(fname)
-        else:
-            encoding = io.text_encoding(encoding)
-            cp.read(fname, encoding=encoding)
+        try:
+            cp = configparser.ConfigParser(defaults)
+            if hasattr(fname, 'readline'):
+                cp.read_file(fname)
+            else:
+                encoding = io.text_encoding(encoding)
+                cp.read(fname, encoding=encoding)
+        except configparser.ParsingError as e:
+            raise RuntimeError(f'{fname} is invalid: {e}')
 
     formatters = _create_formatters(cp)
 
     # critical section
-    logging._acquireLock()
-    try:
+    with logging._lock:
         _clearExistingHandlers()
 
         # Handlers add themselves to logging._handlers
         handlers = _install_handlers(cp, formatters)
         _install_loggers(cp, handlers, disable_existing_loggers)
-    finally:
-        logging._releaseLock()
 
 
 def _resolve(name):
@@ -368,7 +375,7 @@ class BaseConfigurator(object):
 
     WORD_PATTERN = re.compile(r'^\s*(\w+)\s*')
     DOT_PATTERN = re.compile(r'^\.\s*(\w+)\s*')
-    INDEX_PATTERN = re.compile(r'^\[\s*(\w+)\s*\]\s*')
+    INDEX_PATTERN = re.compile(r'^\[([^\[\]]*)\]\s*')
     DIGIT_PATTERN = re.compile(r'^\d+$')
 
     value_converters = {
@@ -475,10 +482,10 @@ def configure_custom(self, config):
         c = config.pop('()')
         if not callable(c):
             c = self.resolve(c)
-        props = config.pop('.', None)
         # Check for valid identifiers
-        kwargs = {k: config[k] for k in config if valid_ident(k)}
+        kwargs = {k: config[k] for k in config if (k != '.' and valid_ident(k))}
         result = c(**kwargs)
+        props = config.pop('.', None)
         if props:
             for name, value in props.items():
                 setattr(result, name, value)
@@ -506,8 +513,7 @@ def configure(self):
             raise ValueError("Unsupported version: %s" % config['version'])
         incremental = config.pop('incremental', False)
         EMPTY_DICT = {}
-        logging._acquireLock()
-        try:
+        with logging._lock:
             if incremental:
                 handlers = config.get('handlers', EMPTY_DICT)
                 for name in handlers:
@@ -651,8 +657,6 @@ def configure(self):
                     except Exception as e:
                         raise ValueError('Unable to configure root '
                                          'logger') from e
-        finally:
-            logging._releaseLock()
 
     def configure_formatter(self, config):
         """Configure a formatter from a dictionary."""
@@ -831,8 +835,7 @@ def configure_handler(self, config):
                 factory = functools.partial(self._configure_queue_handler, klass)
             else:
                 factory = klass
-        props = config.pop('.', None)
-        kwargs = {k: config[k] for k in config if valid_ident(k)}
+        kwargs = {k: config[k] for k in config if (k != '.' and valid_ident(k))}
         try:
             result = factory(**kwargs)
         except TypeError as te:
@@ -850,6 +853,7 @@ def configure_handler(self, config):
             result.setLevel(logging._checkLevel(level))
         if filters:
             self.add_filters(result, filters)
+        props = config.pop('.', None)
         if props:
             for name, value in props.items():
                 setattr(result, name, value)
@@ -978,9 +982,8 @@ class ConfigSocketReceiver(ThreadingTCPServer):
         def __init__(self, host='localhost', port=DEFAULT_LOGGING_CONFIG_PORT,
                      handler=None, ready=None, verify=None):
             ThreadingTCPServer.__init__(self, (host, port), handler)
-            logging._acquireLock()
-            self.abort = 0
-            logging._releaseLock()
+            with logging._lock:
+                self.abort = 0
             self.timeout = 1
             self.ready = ready
             self.verify = verify
@@ -994,9 +997,8 @@ def serve_until_stopped(self):
                                            self.timeout)
                 if rd:
                     self.handle_request()
-                logging._acquireLock()
-                abort = self.abort
-                logging._releaseLock()
+                with logging._lock:
+                    abort = self.abort
             self.server_close()
 
     class Server(threading.Thread):
@@ -1017,9 +1019,8 @@ def run(self):
                 self.port = server.server_address[1]
             self.ready.set()
             global _listener
-            logging._acquireLock()
-            _listener = server
-            logging._releaseLock()
+            with logging._lock:
+                _listener = server
             server.serve_until_stopped()
 
     return Server(ConfigSocketReceiver, ConfigStreamHandler, port, verify)
@@ -1029,10 +1030,7 @@ def stopListening():
     Stop the listening server which was created with a call to listen().
     """
     global _listener
-    logging._acquireLock()
-    try:
+    with logging._lock:
         if _listener:
             _listener.abort = 1
             _listener = None
-    finally:
-        logging._releaseLock()
diff --git a/Lib/logging/handlers.py b/Lib/logging/handlers.py
index 9847104446eaf6..9840b7b0aeba88 100644
--- a/Lib/logging/handlers.py
+++ b/Lib/logging/handlers.py
@@ -683,15 +683,12 @@ def close(self):
         """
         Closes the socket.
         """
-        self.acquire()
-        try:
+        with self.lock:
             sock = self.sock
             if sock:
                 self.sock = None
                 sock.close()
             logging.Handler.close(self)
-        finally:
-            self.release()
 
 class DatagramHandler(SocketHandler):
     """
@@ -833,10 +830,8 @@ class SysLogHandler(logging.Handler):
         "local7":       LOG_LOCAL7,
         }
 
-    #The map below appears to be trivially lowercasing the key. However,
-    #there's more to it than meets the eye - in some locales, lowercasing
-    #gives unexpected results. See SF #1524081: in the Turkish locale,
-    #"INFO".lower() != "info"
+    # Originally added to work around GH-43683. Unnecessary since GH-50043 but kept
+    # for backwards compatibility.
     priority_map = {
         "DEBUG" : "debug",
         "INFO" : "info",
@@ -953,15 +948,12 @@ def close(self):
         """
         Closes the socket.
         """
-        self.acquire()
-        try:
+        with self.lock:
             sock = self.socket
             if sock:
                 self.socket = None
                 sock.close()
             logging.Handler.close(self)
-        finally:
-            self.release()
 
     def mapPriority(self, levelName):
         """
@@ -1333,11 +1325,8 @@ def flush(self):
 
         This version just zaps the buffer to empty.
         """
-        self.acquire()
-        try:
+        with self.lock:
             self.buffer.clear()
-        finally:
-            self.release()
 
     def close(self):
         """
@@ -1387,11 +1376,8 @@ def setTarget(self, target):
         """
         Set the target handler for this handler.
         """
-        self.acquire()
-        try:
+        with self.lock:
             self.target = target
-        finally:
-            self.release()
 
     def flush(self):
         """
@@ -1399,16 +1385,13 @@ def flush(self):
         records to the target, if there is one. Override if you want
         different behaviour.
 
-        The record buffer is also cleared by this operation.
+        The record buffer is only cleared if a target has been set.
         """
-        self.acquire()
-        try:
+        with self.lock:
             if self.target:
                 for record in self.buffer:
                     self.target.handle(record)
                 self.buffer.clear()
-        finally:
-            self.release()
 
     def close(self):
         """
@@ -1419,12 +1402,9 @@ def close(self):
             if self.flushOnClose:
                 self.flush()
         finally:
-            self.acquire()
-            try:
+            with self.lock:
                 self.target = None
                 BufferingHandler.close(self)
-            finally:
-                self.release()
 
 
 class QueueHandler(logging.Handler):
diff --git a/Lib/mailbox.py b/Lib/mailbox.py
index 59834a2b3b5243..36afaded705d0a 100644
--- a/Lib/mailbox.py
+++ b/Lib/mailbox.py
@@ -395,6 +395,56 @@ def get_file(self, key):
         f = open(os.path.join(self._path, self._lookup(key)), 'rb')
         return _ProxyFile(f)
 
+    def get_info(self, key):
+        """Get the keyed message's "info" as a string."""
+        subpath = self._lookup(key)
+        if self.colon in subpath:
+            return subpath.split(self.colon)[-1]
+        return ''
+
+    def set_info(self, key, info: str):
+        """Set the keyed message's "info" string."""
+        if not isinstance(info, str):
+            raise TypeError(f'info must be a string: {type(info)}')
+        old_subpath = self._lookup(key)
+        new_subpath = old_subpath.split(self.colon)[0]
+        if info:
+            new_subpath += self.colon + info
+        if new_subpath == old_subpath:
+            return
+        old_path = os.path.join(self._path, old_subpath)
+        new_path = os.path.join(self._path, new_subpath)
+        os.rename(old_path, new_path)
+        self._toc[key] = new_subpath
+
+    def get_flags(self, key):
+        """Return as a string the standard flags that are set on the keyed message."""
+        info = self.get_info(key)
+        if info.startswith('2,'):
+            return info[2:]
+        return ''
+
+    def set_flags(self, key, flags: str):
+        """Set the given flags and unset all others on the keyed message."""
+        if not isinstance(flags, str):
+            raise TypeError(f'flags must be a string: {type(flags)}')
+        # TODO: check if flags are valid standard flag characters?
+        self.set_info(key, '2,' + ''.join(sorted(set(flags))))
+
+    def add_flag(self, key, flag: str):
+        """Set the given flag(s) without changing others on the keyed message."""
+        if not isinstance(flag, str):
+            raise TypeError(f'flag must be a string: {type(flag)}')
+        # TODO: check that flag is a valid standard flag character?
+        self.set_flags(key, ''.join(set(self.get_flags(key)) | set(flag)))
+
+    def remove_flag(self, key, flag: str):
+        """Unset the given string flag(s) without changing others on the keyed message."""
+        if not isinstance(flag, str):
+            raise TypeError(f'flag must be a string: {type(flag)}')
+        if self.get_flags(key):
+            self.set_flags(key, ''.join(set(self.get_flags(key)) - set(flag)))
+
     def iterkeys(self):
         """Return an iterator over keys."""
         self._refresh()
diff --git a/Lib/mailcap.py b/Lib/mailcap.py
deleted file mode 100644
index 2f4656e854b3bb..00000000000000
--- a/Lib/mailcap.py
+++ /dev/null
@@ -1,302 +0,0 @@
-"""Mailcap file handling.  See RFC 1524."""
-
-import os
-import warnings
-import re
-
-__all__ = ["getcaps","findmatch"]
-
-
-_DEPRECATION_MSG = ('The {name} module is deprecated and will be removed in '
-                    'Python {remove}. See the mimetypes module for an '
-                    'alternative.')
-warnings._deprecated(__name__, _DEPRECATION_MSG, remove=(3, 13))
-
-
-def lineno_sort_key(entry):
-    # Sort in ascending order, with unspecified entries at the end
-    if 'lineno' in entry:
-        return 0, entry['lineno']
-    else:
-        return 1, 0
-
-_find_unsafe = re.compile(r'[^\xa1-\U0010FFFF\w@+=:,./-]').search
-
-class UnsafeMailcapInput(Warning):
-    """Warning raised when refusing unsafe input"""
-
-
-# Part 1: top-level interface.
-
-def getcaps():
-    """Return a dictionary containing the mailcap database.
-
-    The dictionary maps a MIME type (in all lowercase, e.g. 'text/plain')
-    to a list of dictionaries corresponding to mailcap entries.  The list
-    collects all the entries for that MIME type from all available mailcap
-    files.  Each dictionary contains key-value pairs for that MIME type,
-    where the viewing command is stored with the key "view".
-
-    """
-    caps = {}
-    lineno = 0
-    for mailcap in listmailcapfiles():
-        try:
-            fp = open(mailcap, 'r')
-        except OSError:
-            continue
-        with fp:
-            morecaps, lineno = _readmailcapfile(fp, lineno)
-        for key, value in morecaps.items():
-            if not key in caps:
-                caps[key] = value
-            else:
-                caps[key] = caps[key] + value
-    return caps
-
-def listmailcapfiles():
-    """Return a list of all mailcap files found on the system."""
-    # This is mostly a Unix thing, but we use the OS path separator anyway
-    if 'MAILCAPS' in os.environ:
-        pathstr = os.environ['MAILCAPS']
-        mailcaps = pathstr.split(os.pathsep)
-    else:
-        if 'HOME' in os.environ:
-            home = os.environ['HOME']
-        else:
-            # Don't bother with getpwuid()
-            home = '.' # Last resort
-        mailcaps = [home + '/.mailcap', '/etc/mailcap',
-                '/usr/etc/mailcap', '/usr/local/etc/mailcap']
-    return mailcaps
-
-
-# Part 2: the parser.
-def readmailcapfile(fp):
-    """Read a mailcap file and return a dictionary keyed by MIME type."""
-    warnings.warn('readmailcapfile is deprecated, use getcaps instead',
-                  DeprecationWarning, 2)
-    caps, _ = _readmailcapfile(fp, None)
-    return caps
-
-
-def _readmailcapfile(fp, lineno):
-    """Read a mailcap file and return a dictionary keyed by MIME type.
-
-    Each MIME type is mapped to an entry consisting of a list of
-    dictionaries; the list will contain more than one such dictionary
-    if a given MIME type appears more than once in the mailcap file.
-    Each dictionary contains key-value pairs for that MIME type, where
-    the viewing command is stored with the key "view".
-    """
-    caps = {}
-    while line := fp.readline():
-        # Ignore comments and blank lines
-        if line[0] == '#' or line.strip() == '':
-            continue
-        nextline = line
-        # Join continuation lines
-        while nextline[-2:] == '\\\n':
-            nextline = fp.readline()
-            if not nextline: nextline = '\n'
-            line = line[:-2] + nextline
-        # Parse the line
-        key, fields = parseline(line)
-        if not (key and fields):
-            continue
-        if lineno is not None:
-            fields['lineno'] = lineno
-            lineno += 1
-        # Normalize the key
-        types = key.split('/')
-        for j in range(len(types)):
-            types[j] = types[j].strip()
-        key = '/'.join(types).lower()
-        # Update the database
-        if key in caps:
-            caps[key].append(fields)
-        else:
-            caps[key] = [fields]
-    return caps, lineno
-
-def parseline(line):
-    """Parse one entry in a mailcap file and return a dictionary.
-
-    The viewing command is stored as the value with the key "view",
-    and the rest of the fields produce key-value pairs in the dict.
-    """
-    fields = []
-    i, n = 0, len(line)
-    while i < n:
-        field, i = parsefield(line, i, n)
-        fields.append(field)
-        i = i+1 # Skip semicolon
-    if len(fields) < 2:
-        return None, None
-    key, view, rest = fields[0], fields[1], fields[2:]
-    fields = {'view': view}
-    for field in rest:
-        i = field.find('=')
-        if i < 0:
-            fkey = field
-            fvalue = ""
-        else:
-            fkey = field[:i].strip()
-            fvalue = field[i+1:].strip()
-        if fkey in fields:
-            # Ignore it
-            pass
-        else:
-            fields[fkey] = fvalue
-    return key, fields
-
-def parsefield(line, i, n):
-    """Separate one key-value pair in a mailcap entry."""
-    start = i
-    while i < n:
-        c = line[i]
-        if c == ';':
-            break
-        elif c == '\\':
-            i = i+2
-        else:
-            i = i+1
-    return line[start:i].strip(), i
-
-
-# Part 3: using the database.
-
-def findmatch(caps, MIMEtype, key='view', filename="/dev/null", plist=[]):
-    """Find a match for a mailcap entry.
-
-    Return a tuple containing the command line, and the mailcap entry
-    used; (None, None) if no match is found.  This may invoke the
-    'test' command of several matching entries before deciding which
-    entry to use.
-
-    """
-    if _find_unsafe(filename):
-        msg = "Refusing to use mailcap with filename %r. Use a safe temporary filename." % (filename,)
-        warnings.warn(msg, UnsafeMailcapInput)
-        return None, None
-    entries = lookup(caps, MIMEtype, key)
-    # XXX This code should somehow check for the needsterminal flag.
-    for e in entries:
-        if 'test' in e:
-            test = subst(e['test'], filename, plist)
-            if test is None:
-                continue
-            if test and os.system(test) != 0:
-                continue
-        command = subst(e[key], MIMEtype, filename, plist)
-        if command is not None:
-            return command, e
-    return None, None
-
-def lookup(caps, MIMEtype, key=None):
-    entries = []
-    if MIMEtype in caps:
-        entries = entries + caps[MIMEtype]
-    MIMEtypes = MIMEtype.split('/')
-    MIMEtype = MIMEtypes[0] + '/*'
-    if MIMEtype in caps:
-        entries = entries + caps[MIMEtype]
-    if key is not None:
-        entries = [e for e in entries if key in e]
-    entries = sorted(entries, key=lineno_sort_key)
-    return entries
-
-def subst(field, MIMEtype, filename, plist=[]):
-    # XXX Actually, this is Unix-specific
-    res = ''
-    i, n = 0, len(field)
-    while i < n:
-        c = field[i]; i = i+1
-        if c != '%':
-            if c == '\\':
-                c = field[i:i+1]; i = i+1
-            res = res + c
-        else:
-            c = field[i]; i = i+1
-            if c == '%':
-                res = res + c
-            elif c == 's':
-                res = res + filename
-            elif c == 't':
-                if _find_unsafe(MIMEtype):
-                    msg = "Refusing to substitute MIME type %r into a shell command." % (MIMEtype,)
-                    warnings.warn(msg, UnsafeMailcapInput)
-                    return None
-                res = res + MIMEtype
-            elif c == '{':
-                start = i
-                while i < n and field[i] != '}':
-                    i = i+1
-                name = field[start:i]
-                i = i+1
-                param = findparam(name, plist)
-                if _find_unsafe(param):
-                    msg = "Refusing to substitute parameter %r (%s) into a shell command" % (param, name)
-                    warnings.warn(msg, UnsafeMailcapInput)
-                    return None
-                res = res + param
-            # XXX To do:
-            # %n == number of parts if type is multipart/*
-            # %F == list of alternating type and filename for parts
-            else:
-                res = res + '%' + c
-    return res
-
-def findparam(name, plist):
-    name = name.lower() + '='
-    n = len(name)
-    for p in plist:
-        if p[:n].lower() == name:
-            return p[n:]
-    return ''
-
-
-# Part 4: test program.
-
-def test():
-    import sys
-    caps = getcaps()
-    if not sys.argv[1:]:
-        show(caps)
-        return
-    for i in range(1, len(sys.argv), 2):
-        args = sys.argv[i:i+2]
-        if len(args) < 2:
-            print("usage: mailcap [MIMEtype file] ...")
-            return
-        MIMEtype = args[0]
-        file = args[1]
-        command, e = findmatch(caps, MIMEtype, 'view', file)
-        if not command:
-            print("No viewer found for", type)
-        else:
-            print("Executing:", command)
-            sts = os.system(command)
-            sts = os.waitstatus_to_exitcode(sts)
-            if sts:
-                print("Exit status:", sts)
-
-def show(caps):
-    print("Mailcap files:")
-    for fn in listmailcapfiles(): print("\t" + fn)
-    print()
-    if not caps: caps = getcaps()
-    print("Mailcap entries:")
-    print()
-    ckeys = sorted(caps)
-    for type in ckeys:
-        print(type)
-        entries = caps[type]
-        for e in entries:
-            keys = sorted(e)
-            for k in keys:
-                print("  %-15s" % k, e[k])
-            print()
-
-if __name__ == '__main__':
-    test()
diff --git a/Lib/msilib/__init__.py b/Lib/msilib/__init__.py
deleted file mode 100644
index 565bf631abd4ed..00000000000000
--- a/Lib/msilib/__init__.py
+++ /dev/null
@@ -1,484 +0,0 @@
-# Copyright (C) 2005 Martin v. Löwis
-# Licensed to PSF under a Contributor Agreement.
-from _msi import *
-import fnmatch
-import os
-import re
-import string
-import sys
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-AMD64 = "AMD64" in sys.version
-# Keep msilib.Win64 around to preserve backwards compatibility.
-Win64 = AMD64
-
-# Partially taken from Wine
-datasizemask=      0x00ff
-type_valid=        0x0100
-type_localizable=  0x0200
-
-typemask=          0x0c00
-type_long=         0x0000
-type_short=        0x0400
-type_string=       0x0c00
-type_binary=       0x0800
-
-type_nullable=     0x1000
-type_key=          0x2000
-# XXX temporary, localizable?
-knownbits = datasizemask | type_valid | type_localizable | \
-            typemask | type_nullable | type_key
-
-class Table:
-    def __init__(self, name):
-        self.name = name
-        self.fields = []
-
-    def add_field(self, index, name, type):
-        self.fields.append((index,name,type))
-
-    def sql(self):
-        fields = []
-        keys = []
-        self.fields.sort()
-        fields = [None]*len(self.fields)
-        for index, name, type in self.fields:
-            index -= 1
-            unk = type & ~knownbits
-            if unk:
-                print("%s.%s unknown bits %x" % (self.name, name, unk))
-            size = type & datasizemask
-            dtype = type & typemask
-            if dtype == type_string:
-                if size:
-                    tname="CHAR(%d)" % size
-                else:
-                    tname="CHAR"
-            elif dtype == type_short:
-                assert size==2
-                tname = "SHORT"
-            elif dtype == type_long:
-                assert size==4
-                tname="LONG"
-            elif dtype == type_binary:
-                assert size==0
-                tname="OBJECT"
-            else:
-                tname="unknown"
-                print("%s.%sunknown integer type %d" % (self.name, name, size))
-            if type & type_nullable:
-                flags = ""
-            else:
-                flags = " NOT NULL"
-            if type & type_localizable:
-                flags += " LOCALIZABLE"
-            fields[index] = "`%s` %s%s" % (name, tname, flags)
-            if type & type_key:
-                keys.append("`%s`" % name)
-        fields = ", ".join(fields)
-        keys = ", ".join(keys)
-        return "CREATE TABLE %s (%s PRIMARY KEY %s)" % (self.name, fields, keys)
-
-    def create(self, db):
-        v = db.OpenView(self.sql())
-        v.Execute(None)
-        v.Close()
-
-class _Unspecified:pass
-def change_sequence(seq, action, seqno=_Unspecified, cond = _Unspecified):
-    "Change the sequence number of an action in a sequence list"
-    for i in range(len(seq)):
-        if seq[i][0] == action:
-            if cond is _Unspecified:
-                cond = seq[i][1]
-            if seqno is _Unspecified:
-                seqno = seq[i][2]
-            seq[i] = (action, cond, seqno)
-            return
-    raise ValueError("Action not found in sequence")
-
-def add_data(db, table, values):
-    v = db.OpenView("SELECT * FROM `%s`" % table)
-    count = v.GetColumnInfo(MSICOLINFO_NAMES).GetFieldCount()
-    r = CreateRecord(count)
-    for value in values:
-        assert len(value) == count, value
-        for i in range(count):
-            field = value[i]
-            if isinstance(field, int):
-                r.SetInteger(i+1,field)
-            elif isinstance(field, str):
-                r.SetString(i+1,field)
-            elif field is None:
-                pass
-            elif isinstance(field, Binary):
-                r.SetStream(i+1, field.name)
-            else:
-                raise TypeError("Unsupported type %s" % field.__class__.__name__)
-        try:
-            v.Modify(MSIMODIFY_INSERT, r)
-        except Exception:
-            raise MSIError("Could not insert "+repr(values)+" into "+table)
-
-        r.ClearData()
-    v.Close()
-
-
-def add_stream(db, name, path):
-    v = db.OpenView("INSERT INTO _Streams (Name, Data) VALUES ('%s', ?)" % name)
-    r = CreateRecord(1)
-    r.SetStream(1, path)
-    v.Execute(r)
-    v.Close()
-
-def init_database(name, schema,
-                  ProductName, ProductCode, ProductVersion,
-                  Manufacturer):
-    try:
-        os.unlink(name)
-    except OSError:
-        pass
-    ProductCode = ProductCode.upper()
-    # Create the database
-    db = OpenDatabase(name, MSIDBOPEN_CREATE)
-    # Create the tables
-    for t in schema.tables:
-        t.create(db)
-    # Fill the validation table
-    add_data(db, "_Validation", schema._Validation_records)
-    # Initialize the summary information, allowing atmost 20 properties
-    si = db.GetSummaryInformation(20)
-    si.SetProperty(PID_TITLE, "Installation Database")
-    si.SetProperty(PID_SUBJECT, ProductName)
-    si.SetProperty(PID_AUTHOR, Manufacturer)
-    if AMD64:
-        si.SetProperty(PID_TEMPLATE, "x64;1033")
-    else:
-        si.SetProperty(PID_TEMPLATE, "Intel;1033")
-    si.SetProperty(PID_REVNUMBER, gen_uuid())
-    si.SetProperty(PID_WORDCOUNT, 2) # long file names, compressed, original media
-    si.SetProperty(PID_PAGECOUNT, 200)
-    si.SetProperty(PID_APPNAME, "Python MSI Library")
-    # XXX more properties
-    si.Persist()
-    add_data(db, "Property", [
-        ("ProductName", ProductName),
-        ("ProductCode", ProductCode),
-        ("ProductVersion", ProductVersion),
-        ("Manufacturer", Manufacturer),
-        ("ProductLanguage", "1033")])
-    db.Commit()
-    return db
-
-def add_tables(db, module):
-    for table in module.tables:
-        add_data(db, table, getattr(module, table))
-
-def make_id(str):
-    identifier_chars = string.ascii_letters + string.digits + "._"
-    str = "".join([c if c in identifier_chars else "_" for c in str])
-    if str[0] in (string.digits + "."):
-        str = "_" + str
-    assert re.match("^[A-Za-z_][A-Za-z0-9_.]*$", str), "FILE"+str
-    return str
-
-def gen_uuid():
-    return "{"+UuidCreate().upper()+"}"
-
-class CAB:
-    def __init__(self, name):
-        self.name = name
-        self.files = []
-        self.filenames = set()
-        self.index = 0
-
-    def gen_id(self, file):
-        logical = _logical = make_id(file)
-        pos = 1
-        while logical in self.filenames:
-            logical = "%s.%d" % (_logical, pos)
-            pos += 1
-        self.filenames.add(logical)
-        return logical
-
-    def append(self, full, file, logical):
-        if os.path.isdir(full):
-            return
-        if not logical:
-            logical = self.gen_id(file)
-        self.index += 1
-        self.files.append((full, logical))
-        return self.index, logical
-
-    def commit(self, db):
-        from tempfile import mktemp
-        filename = mktemp()
-        FCICreate(filename, self.files)
-        add_data(db, "Media",
-                [(1, self.index, None, "#"+self.name, None, None)])
-        add_stream(db, self.name, filename)
-        os.unlink(filename)
-        db.Commit()
-
-_directories = set()
-class Directory:
-    def __init__(self, db, cab, basedir, physical, _logical, default, componentflags=None):
-        """Create a new directory in the Directory table. There is a current component
-        at each point in time for the directory, which is either explicitly created
-        through start_component, or implicitly when files are added for the first
-        time. Files are added into the current component, and into the cab file.
-        To create a directory, a base directory object needs to be specified (can be
-        None), the path to the physical directory, and a logical directory name.
-        Default specifies the DefaultDir slot in the directory table. componentflags
-        specifies the default flags that new components get."""
-        index = 1
-        _logical = make_id(_logical)
-        logical = _logical
-        while logical in _directories:
-            logical = "%s%d" % (_logical, index)
-            index += 1
-        _directories.add(logical)
-        self.db = db
-        self.cab = cab
-        self.basedir = basedir
-        self.physical = physical
-        self.logical = logical
-        self.component = None
-        self.short_names = set()
-        self.ids = set()
-        self.keyfiles = {}
-        self.componentflags = componentflags
-        if basedir:
-            self.absolute = os.path.join(basedir.absolute, physical)
-            blogical = basedir.logical
-        else:
-            self.absolute = physical
-            blogical = None
-        add_data(db, "Directory", [(logical, blogical, default)])
-
-    def start_component(self, component = None, feature = None, flags = None, keyfile = None, uuid=None):
-        """Add an entry to the Component table, and make this component the current for this
-        directory. If no component name is given, the directory name is used. If no feature
-        is given, the current feature is used. If no flags are given, the directory's default
-        flags are used. If no keyfile is given, the KeyPath is left null in the Component
-        table."""
-        if flags is None:
-            flags = self.componentflags
-        if uuid is None:
-            uuid = gen_uuid()
-        else:
-            uuid = uuid.upper()
-        if component is None:
-            component = self.logical
-        self.component = component
-        if AMD64:
-            flags |= 256
-        if keyfile:
-            keyid = self.cab.gen_id(keyfile)
-            self.keyfiles[keyfile] = keyid
-        else:
-            keyid = None
-        add_data(self.db, "Component",
-                        [(component, uuid, self.logical, flags, None, keyid)])
-        if feature is None:
-            feature = current_feature
-        add_data(self.db, "FeatureComponents",
-                        [(feature.id, component)])
-
-    def make_short(self, file):
-        oldfile = file
-        file = file.replace('+', '_')
-        file = ''.join(c for c in file if not c in r' "/\[]:;=,')
-        parts = file.split(".")
-        if len(parts) > 1:
-            prefix = "".join(parts[:-1]).upper()
-            suffix = parts[-1].upper()
-            if not prefix:
-                prefix = suffix
-                suffix = None
-        else:
-            prefix = file.upper()
-            suffix = None
-        if len(parts) < 3 and len(prefix) <= 8 and file == oldfile and (
-                                                not suffix or len(suffix) <= 3):
-            if suffix:
-                file = prefix+"."+suffix
-            else:
-                file = prefix
-        else:
-            file = None
-        if file is None or file in self.short_names:
-            prefix = prefix[:6]
-            if suffix:
-                suffix = suffix[:3]
-            pos = 1
-            while 1:
-                if suffix:
-                    file = "%s~%d.%s" % (prefix, pos, suffix)
-                else:
-                    file = "%s~%d" % (prefix, pos)
-                if file not in self.short_names: break
-                pos += 1
-                assert pos < 10000
-                if pos in (10, 100, 1000):
-                    prefix = prefix[:-1]
-        self.short_names.add(file)
-        assert not re.search(r'[\?|><:/*"+,;=\[\]]', file) # restrictions on short names
-        return file
-
-    def add_file(self, file, src=None, version=None, language=None):
-        """Add a file to the current component of the directory, starting a new one
-        if there is no current component. By default, the file name in the source
-        and the file table will be identical. If the src file is specified, it is
-        interpreted relative to the current directory. Optionally, a version and a
-        language can be specified for the entry in the File table."""
-        if not self.component:
-            self.start_component(self.logical, current_feature, 0)
-        if not src:
-            # Allow relative paths for file if src is not specified
-            src = file
-            file = os.path.basename(file)
-        absolute = os.path.join(self.absolute, src)
-        assert not re.search(r'[\?|><:/*]"', file) # restrictions on long names
-        if file in self.keyfiles:
-            logical = self.keyfiles[file]
-        else:
-            logical = None
-        sequence, logical = self.cab.append(absolute, file, logical)
-        assert logical not in self.ids
-        self.ids.add(logical)
-        short = self.make_short(file)
-        full = "%s|%s" % (short, file)
-        filesize = os.stat(absolute).st_size
-        # constants.msidbFileAttributesVital
-        # Compressed omitted, since it is the database default
-        # could add r/o, system, hidden
-        attributes = 512
-        add_data(self.db, "File",
-                        [(logical, self.component, full, filesize, version,
-                         language, attributes, sequence)])
-        #if not version:
-        #    # Add hash if the file is not versioned
-        #    filehash = FileHash(absolute, 0)
-        #    add_data(self.db, "MsiFileHash",
-        #             [(logical, 0, filehash.IntegerData(1),
-        #               filehash.IntegerData(2), filehash.IntegerData(3),
-        #               filehash.IntegerData(4))])
-        # Automatically remove .pyc files on uninstall (2)
-        # XXX: adding so many RemoveFile entries makes installer unbelievably
-        # slow. So instead, we have to use wildcard remove entries
-        if file.endswith(".py"):
-            add_data(self.db, "RemoveFile",
-                      [(logical+"c", self.component, "%sC|%sc" % (short, file),
-                        self.logical, 2),
-                       (logical+"o", self.component, "%sO|%so" % (short, file),
-                        self.logical, 2)])
-        return logical
-
-    def glob(self, pattern, exclude = None):
-        """Add a list of files to the current component as specified in the
-        glob pattern. Individual files can be excluded in the exclude list."""
-        try:
-            files = os.listdir(self.absolute)
-        except OSError:
-            return []
-        if pattern[:1] != '.':
-            files = (f for f in files if f[0] != '.')
-        files = fnmatch.filter(files, pattern)
-        for f in files:
-            if exclude and f in exclude: continue
-            self.add_file(f)
-        return files
-
-    def remove_pyc(self):
-        "Remove .pyc files on uninstall"
-        add_data(self.db, "RemoveFile",
-                 [(self.component+"c", self.component, "*.pyc", self.logical, 2)])
-
-class Binary:
-    def __init__(self, fname):
-        self.name = fname
-    def __repr__(self):
-        return 'msilib.Binary(os.path.join(dirname,"%s"))' % self.name
-
-class Feature:
-    def __init__(self, db, id, title, desc, display, level = 1,
-                 parent=None, directory = None, attributes=0):
-        self.id = id
-        if parent:
-            parent = parent.id
-        add_data(db, "Feature",
-                        [(id, parent, title, desc, display,
-                          level, directory, attributes)])
-    def set_current(self):
-        global current_feature
-        current_feature = self
-
-class Control:
-    def __init__(self, dlg, name):
-        self.dlg = dlg
-        self.name = name
-
-    def event(self, event, argument, condition = "1", ordering = None):
-        add_data(self.dlg.db, "ControlEvent",
-                 [(self.dlg.name, self.name, event, argument,
-                   condition, ordering)])
-
-    def mapping(self, event, attribute):
-        add_data(self.dlg.db, "EventMapping",
-                 [(self.dlg.name, self.name, event, attribute)])
-
-    def condition(self, action, condition):
-        add_data(self.dlg.db, "ControlCondition",
-                 [(self.dlg.name, self.name, action, condition)])
-
-class RadioButtonGroup(Control):
-    def __init__(self, dlg, name, property):
-        self.dlg = dlg
-        self.name = name
-        self.property = property
-        self.index = 1
-
-    def add(self, name, x, y, w, h, text, value = None):
-        if value is None:
-            value = name
-        add_data(self.dlg.db, "RadioButton",
-                 [(self.property, self.index, value,
-                   x, y, w, h, text, None)])
-        self.index += 1
-
-class Dialog:
-    def __init__(self, db, name, x, y, w, h, attr, title, first, default, cancel):
-        self.db = db
-        self.name = name
-        self.x, self.y, self.w, self.h = x,y,w,h
-        add_data(db, "Dialog", [(name, x,y,w,h,attr,title,first,default,cancel)])
-
-    def control(self, name, type, x, y, w, h, attr, prop, text, next, help):
-        add_data(self.db, "Control",
-                 [(self.name, name, type, x, y, w, h, attr, prop, text, next, help)])
-        return Control(self, name)
-
-    def text(self, name, x, y, w, h, attr, text):
-        return self.control(name, "Text", x, y, w, h, attr, None,
-                     text, None, None)
-
-    def bitmap(self, name, x, y, w, h, text):
-        return self.control(name, "Bitmap", x, y, w, h, 1, None, text, None, None)
-
-    def line(self, name, x, y, w, h):
-        return self.control(name, "Line", x, y, w, h, 1, None, None, None, None)
-
-    def pushbutton(self, name, x, y, w, h, attr, text, next):
-        return self.control(name, "PushButton", x, y, w, h, attr, None, text, next, None)
-
-    def radiogroup(self, name, x, y, w, h, attr, prop, text, next):
-        add_data(self.db, "Control",
-                 [(self.name, name, "RadioButtonGroup",
-                   x, y, w, h, attr, prop, text, next, None)])
-        return RadioButtonGroup(self, name, prop)
-
-    def checkbox(self, name, x, y, w, h, attr, prop, text, next):
-        return self.control(name, "CheckBox", x, y, w, h, attr, prop, text, next, None)
diff --git a/Lib/msilib/schema.py b/Lib/msilib/schema.py
deleted file mode 100644
index 9f5745cfb14de2..00000000000000
--- a/Lib/msilib/schema.py
+++ /dev/null
@@ -1,1007 +0,0 @@
-from . import Table
-
-_Validation = Table('_Validation')
-_Validation.add_field(1,'Table',11552)
-_Validation.add_field(2,'Column',11552)
-_Validation.add_field(3,'Nullable',3332)
-_Validation.add_field(4,'MinValue',4356)
-_Validation.add_field(5,'MaxValue',4356)
-_Validation.add_field(6,'KeyTable',7679)
-_Validation.add_field(7,'KeyColumn',5378)
-_Validation.add_field(8,'Category',7456)
-_Validation.add_field(9,'Set',7679)
-_Validation.add_field(10,'Description',7679)
-
-ActionText = Table('ActionText')
-ActionText.add_field(1,'Action',11592)
-ActionText.add_field(2,'Description',7936)
-ActionText.add_field(3,'Template',7936)
-
-AdminExecuteSequence = Table('AdminExecuteSequence')
-AdminExecuteSequence.add_field(1,'Action',11592)
-AdminExecuteSequence.add_field(2,'Condition',7679)
-AdminExecuteSequence.add_field(3,'Sequence',5378)
-
-Condition = Table('Condition')
-Condition.add_field(1,'Feature_',11558)
-Condition.add_field(2,'Level',9474)
-Condition.add_field(3,'Condition',7679)
-
-AdminUISequence = Table('AdminUISequence')
-AdminUISequence.add_field(1,'Action',11592)
-AdminUISequence.add_field(2,'Condition',7679)
-AdminUISequence.add_field(3,'Sequence',5378)
-
-AdvtExecuteSequence = Table('AdvtExecuteSequence')
-AdvtExecuteSequence.add_field(1,'Action',11592)
-AdvtExecuteSequence.add_field(2,'Condition',7679)
-AdvtExecuteSequence.add_field(3,'Sequence',5378)
-
-AdvtUISequence = Table('AdvtUISequence')
-AdvtUISequence.add_field(1,'Action',11592)
-AdvtUISequence.add_field(2,'Condition',7679)
-AdvtUISequence.add_field(3,'Sequence',5378)
-
-AppId = Table('AppId')
-AppId.add_field(1,'AppId',11558)
-AppId.add_field(2,'RemoteServerName',7679)
-AppId.add_field(3,'LocalService',7679)
-AppId.add_field(4,'ServiceParameters',7679)
-AppId.add_field(5,'DllSurrogate',7679)
-AppId.add_field(6,'ActivateAtStorage',5378)
-AppId.add_field(7,'RunAsInteractiveUser',5378)
-
-AppSearch = Table('AppSearch')
-AppSearch.add_field(1,'Property',11592)
-AppSearch.add_field(2,'Signature_',11592)
-
-Property = Table('Property')
-Property.add_field(1,'Property',11592)
-Property.add_field(2,'Value',3840)
-
-BBControl = Table('BBControl')
-BBControl.add_field(1,'Billboard_',11570)
-BBControl.add_field(2,'BBControl',11570)
-BBControl.add_field(3,'Type',3378)
-BBControl.add_field(4,'X',1282)
-BBControl.add_field(5,'Y',1282)
-BBControl.add_field(6,'Width',1282)
-BBControl.add_field(7,'Height',1282)
-BBControl.add_field(8,'Attributes',4356)
-BBControl.add_field(9,'Text',7986)
-
-Billboard = Table('Billboard')
-Billboard.add_field(1,'Billboard',11570)
-Billboard.add_field(2,'Feature_',3366)
-Billboard.add_field(3,'Action',7474)
-Billboard.add_field(4,'Ordering',5378)
-
-Feature = Table('Feature')
-Feature.add_field(1,'Feature',11558)
-Feature.add_field(2,'Feature_Parent',7462)
-Feature.add_field(3,'Title',8000)
-Feature.add_field(4,'Description',8191)
-Feature.add_field(5,'Display',5378)
-Feature.add_field(6,'Level',1282)
-Feature.add_field(7,'Directory_',7496)
-Feature.add_field(8,'Attributes',1282)
-
-Binary = Table('Binary')
-Binary.add_field(1,'Name',11592)
-Binary.add_field(2,'Data',2304)
-
-BindImage = Table('BindImage')
-BindImage.add_field(1,'File_',11592)
-BindImage.add_field(2,'Path',7679)
-
-File = Table('File')
-File.add_field(1,'File',11592)
-File.add_field(2,'Component_',3400)
-File.add_field(3,'FileName',4095)
-File.add_field(4,'FileSize',260)
-File.add_field(5,'Version',7496)
-File.add_field(6,'Language',7444)
-File.add_field(7,'Attributes',5378)
-File.add_field(8,'Sequence',1282)
-
-CCPSearch = Table('CCPSearch')
-CCPSearch.add_field(1,'Signature_',11592)
-
-CheckBox = Table('CheckBox')
-CheckBox.add_field(1,'Property',11592)
-CheckBox.add_field(2,'Value',7488)
-
-Class = Table('Class')
-Class.add_field(1,'CLSID',11558)
-Class.add_field(2,'Context',11552)
-Class.add_field(3,'Component_',11592)
-Class.add_field(4,'ProgId_Default',7679)
-Class.add_field(5,'Description',8191)
-Class.add_field(6,'AppId_',7462)
-Class.add_field(7,'FileTypeMask',7679)
-Class.add_field(8,'Icon_',7496)
-Class.add_field(9,'IconIndex',5378)
-Class.add_field(10,'DefInprocHandler',7456)
-Class.add_field(11,'Argument',7679)
-Class.add_field(12,'Feature_',3366)
-Class.add_field(13,'Attributes',5378)
-
-Component = Table('Component')
-Component.add_field(1,'Component',11592)
-Component.add_field(2,'ComponentId',7462)
-Component.add_field(3,'Directory_',3400)
-Component.add_field(4,'Attributes',1282)
-Component.add_field(5,'Condition',7679)
-Component.add_field(6,'KeyPath',7496)
-
-Icon = Table('Icon')
-Icon.add_field(1,'Name',11592)
-Icon.add_field(2,'Data',2304)
-
-ProgId = Table('ProgId')
-ProgId.add_field(1,'ProgId',11775)
-ProgId.add_field(2,'ProgId_Parent',7679)
-ProgId.add_field(3,'Class_',7462)
-ProgId.add_field(4,'Description',8191)
-ProgId.add_field(5,'Icon_',7496)
-ProgId.add_field(6,'IconIndex',5378)
-
-ComboBox = Table('ComboBox')
-ComboBox.add_field(1,'Property',11592)
-ComboBox.add_field(2,'Order',9474)
-ComboBox.add_field(3,'Value',3392)
-ComboBox.add_field(4,'Text',8000)
-
-CompLocator = Table('CompLocator')
-CompLocator.add_field(1,'Signature_',11592)
-CompLocator.add_field(2,'ComponentId',3366)
-CompLocator.add_field(3,'Type',5378)
-
-Complus = Table('Complus')
-Complus.add_field(1,'Component_',11592)
-Complus.add_field(2,'ExpType',13570)
-
-Directory = Table('Directory')
-Directory.add_field(1,'Directory',11592)
-Directory.add_field(2,'Directory_Parent',7496)
-Directory.add_field(3,'DefaultDir',4095)
-
-Control = Table('Control')
-Control.add_field(1,'Dialog_',11592)
-Control.add_field(2,'Control',11570)
-Control.add_field(3,'Type',3348)
-Control.add_field(4,'X',1282)
-Control.add_field(5,'Y',1282)
-Control.add_field(6,'Width',1282)
-Control.add_field(7,'Height',1282)
-Control.add_field(8,'Attributes',4356)
-Control.add_field(9,'Property',7474)
-Control.add_field(10,'Text',7936)
-Control.add_field(11,'Control_Next',7474)
-Control.add_field(12,'Help',7986)
-
-Dialog = Table('Dialog')
-Dialog.add_field(1,'Dialog',11592)
-Dialog.add_field(2,'HCentering',1282)
-Dialog.add_field(3,'VCentering',1282)
-Dialog.add_field(4,'Width',1282)
-Dialog.add_field(5,'Height',1282)
-Dialog.add_field(6,'Attributes',4356)
-Dialog.add_field(7,'Title',8064)
-Dialog.add_field(8,'Control_First',3378)
-Dialog.add_field(9,'Control_Default',7474)
-Dialog.add_field(10,'Control_Cancel',7474)
-
-ControlCondition = Table('ControlCondition')
-ControlCondition.add_field(1,'Dialog_',11592)
-ControlCondition.add_field(2,'Control_',11570)
-ControlCondition.add_field(3,'Action',11570)
-ControlCondition.add_field(4,'Condition',11775)
-
-ControlEvent = Table('ControlEvent')
-ControlEvent.add_field(1,'Dialog_',11592)
-ControlEvent.add_field(2,'Control_',11570)
-ControlEvent.add_field(3,'Event',11570)
-ControlEvent.add_field(4,'Argument',11775)
-ControlEvent.add_field(5,'Condition',15871)
-ControlEvent.add_field(6,'Ordering',5378)
-
-CreateFolder = Table('CreateFolder')
-CreateFolder.add_field(1,'Directory_',11592)
-CreateFolder.add_field(2,'Component_',11592)
-
-CustomAction = Table('CustomAction')
-CustomAction.add_field(1,'Action',11592)
-CustomAction.add_field(2,'Type',1282)
-CustomAction.add_field(3,'Source',7496)
-CustomAction.add_field(4,'Target',7679)
-
-DrLocator = Table('DrLocator')
-DrLocator.add_field(1,'Signature_',11592)
-DrLocator.add_field(2,'Parent',15688)
-DrLocator.add_field(3,'Path',15871)
-DrLocator.add_field(4,'Depth',5378)
-
-DuplicateFile = Table('DuplicateFile')
-DuplicateFile.add_field(1,'FileKey',11592)
-DuplicateFile.add_field(2,'Component_',3400)
-DuplicateFile.add_field(3,'File_',3400)
-DuplicateFile.add_field(4,'DestName',8191)
-DuplicateFile.add_field(5,'DestFolder',7496)
-
-Environment = Table('Environment')
-Environment.add_field(1,'Environment',11592)
-Environment.add_field(2,'Name',4095)
-Environment.add_field(3,'Value',8191)
-Environment.add_field(4,'Component_',3400)
-
-Error = Table('Error')
-Error.add_field(1,'Error',9474)
-Error.add_field(2,'Message',7936)
-
-EventMapping = Table('EventMapping')
-EventMapping.add_field(1,'Dialog_',11592)
-EventMapping.add_field(2,'Control_',11570)
-EventMapping.add_field(3,'Event',11570)
-EventMapping.add_field(4,'Attribute',3378)
-
-Extension = Table('Extension')
-Extension.add_field(1,'Extension',11775)
-Extension.add_field(2,'Component_',11592)
-Extension.add_field(3,'ProgId_',7679)
-Extension.add_field(4,'MIME_',7488)
-Extension.add_field(5,'Feature_',3366)
-
-MIME = Table('MIME')
-MIME.add_field(1,'ContentType',11584)
-MIME.add_field(2,'Extension_',3583)
-MIME.add_field(3,'CLSID',7462)
-
-FeatureComponents = Table('FeatureComponents')
-FeatureComponents.add_field(1,'Feature_',11558)
-FeatureComponents.add_field(2,'Component_',11592)
-
-FileSFPCatalog = Table('FileSFPCatalog')
-FileSFPCatalog.add_field(1,'File_',11592)
-FileSFPCatalog.add_field(2,'SFPCatalog_',11775)
-
-SFPCatalog = Table('SFPCatalog')
-SFPCatalog.add_field(1,'SFPCatalog',11775)
-SFPCatalog.add_field(2,'Catalog',2304)
-SFPCatalog.add_field(3,'Dependency',7424)
-
-Font = Table('Font')
-Font.add_field(1,'File_',11592)
-Font.add_field(2,'FontTitle',7552)
-
-IniFile = Table('IniFile')
-IniFile.add_field(1,'IniFile',11592)
-IniFile.add_field(2,'FileName',4095)
-IniFile.add_field(3,'DirProperty',7496)
-IniFile.add_field(4,'Section',3936)
-IniFile.add_field(5,'Key',3968)
-IniFile.add_field(6,'Value',4095)
-IniFile.add_field(7,'Action',1282)
-IniFile.add_field(8,'Component_',3400)
-
-IniLocator = Table('IniLocator')
-IniLocator.add_field(1,'Signature_',11592)
-IniLocator.add_field(2,'FileName',3583)
-IniLocator.add_field(3,'Section',3424)
-IniLocator.add_field(4,'Key',3456)
-IniLocator.add_field(5,'Field',5378)
-IniLocator.add_field(6,'Type',5378)
-
-InstallExecuteSequence = Table('InstallExecuteSequence')
-InstallExecuteSequence.add_field(1,'Action',11592)
-InstallExecuteSequence.add_field(2,'Condition',7679)
-InstallExecuteSequence.add_field(3,'Sequence',5378)
-
-InstallUISequence = Table('InstallUISequence')
-InstallUISequence.add_field(1,'Action',11592)
-InstallUISequence.add_field(2,'Condition',7679)
-InstallUISequence.add_field(3,'Sequence',5378)
-
-IsolatedComponent = Table('IsolatedComponent')
-IsolatedComponent.add_field(1,'Component_Shared',11592)
-IsolatedComponent.add_field(2,'Component_Application',11592)
-
-LaunchCondition = Table('LaunchCondition')
-LaunchCondition.add_field(1,'Condition',11775)
-LaunchCondition.add_field(2,'Description',4095)
-
-ListBox = Table('ListBox')
-ListBox.add_field(1,'Property',11592)
-ListBox.add_field(2,'Order',9474)
-ListBox.add_field(3,'Value',3392)
-ListBox.add_field(4,'Text',8000)
-
-ListView = Table('ListView')
-ListView.add_field(1,'Property',11592)
-ListView.add_field(2,'Order',9474)
-ListView.add_field(3,'Value',3392)
-ListView.add_field(4,'Text',8000)
-ListView.add_field(5,'Binary_',7496)
-
-LockPermissions = Table('LockPermissions')
-LockPermissions.add_field(1,'LockObject',11592)
-LockPermissions.add_field(2,'Table',11552)
-LockPermissions.add_field(3,'Domain',15871)
-LockPermissions.add_field(4,'User',11775)
-LockPermissions.add_field(5,'Permission',4356)
-
-Media = Table('Media')
-Media.add_field(1,'DiskId',9474)
-Media.add_field(2,'LastSequence',1282)
-Media.add_field(3,'DiskPrompt',8000)
-Media.add_field(4,'Cabinet',7679)
-Media.add_field(5,'VolumeLabel',7456)
-Media.add_field(6,'Source',7496)
-
-MoveFile = Table('MoveFile')
-MoveFile.add_field(1,'FileKey',11592)
-MoveFile.add_field(2,'Component_',3400)
-MoveFile.add_field(3,'SourceName',8191)
-MoveFile.add_field(4,'DestName',8191)
-MoveFile.add_field(5,'SourceFolder',7496)
-MoveFile.add_field(6,'DestFolder',3400)
-MoveFile.add_field(7,'Options',1282)
-
-MsiAssembly = Table('MsiAssembly')
-MsiAssembly.add_field(1,'Component_',11592)
-MsiAssembly.add_field(2,'Feature_',3366)
-MsiAssembly.add_field(3,'File_Manifest',7496)
-MsiAssembly.add_field(4,'File_Application',7496)
-MsiAssembly.add_field(5,'Attributes',5378)
-
-MsiAssemblyName = Table('MsiAssemblyName')
-MsiAssemblyName.add_field(1,'Component_',11592)
-MsiAssemblyName.add_field(2,'Name',11775)
-MsiAssemblyName.add_field(3,'Value',3583)
-
-MsiDigitalCertificate = Table('MsiDigitalCertificate')
-MsiDigitalCertificate.add_field(1,'DigitalCertificate',11592)
-MsiDigitalCertificate.add_field(2,'CertData',2304)
-
-MsiDigitalSignature = Table('MsiDigitalSignature')
-MsiDigitalSignature.add_field(1,'Table',11552)
-MsiDigitalSignature.add_field(2,'SignObject',11592)
-MsiDigitalSignature.add_field(3,'DigitalCertificate_',3400)
-MsiDigitalSignature.add_field(4,'Hash',6400)
-
-MsiFileHash = Table('MsiFileHash')
-MsiFileHash.add_field(1,'File_',11592)
-MsiFileHash.add_field(2,'Options',1282)
-MsiFileHash.add_field(3,'HashPart1',260)
-MsiFileHash.add_field(4,'HashPart2',260)
-MsiFileHash.add_field(5,'HashPart3',260)
-MsiFileHash.add_field(6,'HashPart4',260)
-
-MsiPatchHeaders = Table('MsiPatchHeaders')
-MsiPatchHeaders.add_field(1,'StreamRef',11558)
-MsiPatchHeaders.add_field(2,'Header',2304)
-
-ODBCAttribute = Table('ODBCAttribute')
-ODBCAttribute.add_field(1,'Driver_',11592)
-ODBCAttribute.add_field(2,'Attribute',11560)
-ODBCAttribute.add_field(3,'Value',8191)
-
-ODBCDriver = Table('ODBCDriver')
-ODBCDriver.add_field(1,'Driver',11592)
-ODBCDriver.add_field(2,'Component_',3400)
-ODBCDriver.add_field(3,'Description',3583)
-ODBCDriver.add_field(4,'File_',3400)
-ODBCDriver.add_field(5,'File_Setup',7496)
-
-ODBCDataSource = Table('ODBCDataSource')
-ODBCDataSource.add_field(1,'DataSource',11592)
-ODBCDataSource.add_field(2,'Component_',3400)
-ODBCDataSource.add_field(3,'Description',3583)
-ODBCDataSource.add_field(4,'DriverDescription',3583)
-ODBCDataSource.add_field(5,'Registration',1282)
-
-ODBCSourceAttribute = Table('ODBCSourceAttribute')
-ODBCSourceAttribute.add_field(1,'DataSource_',11592)
-ODBCSourceAttribute.add_field(2,'Attribute',11552)
-ODBCSourceAttribute.add_field(3,'Value',8191)
-
-ODBCTranslator = Table('ODBCTranslator')
-ODBCTranslator.add_field(1,'Translator',11592)
-ODBCTranslator.add_field(2,'Component_',3400)
-ODBCTranslator.add_field(3,'Description',3583)
-ODBCTranslator.add_field(4,'File_',3400)
-ODBCTranslator.add_field(5,'File_Setup',7496)
-
-Patch = Table('Patch')
-Patch.add_field(1,'File_',11592)
-Patch.add_field(2,'Sequence',9474)
-Patch.add_field(3,'PatchSize',260)
-Patch.add_field(4,'Attributes',1282)
-Patch.add_field(5,'Header',6400)
-Patch.add_field(6,'StreamRef_',7462)
-
-PatchPackage = Table('PatchPackage')
-PatchPackage.add_field(1,'PatchId',11558)
-PatchPackage.add_field(2,'Media_',1282)
-
-PublishComponent = Table('PublishComponent')
-PublishComponent.add_field(1,'ComponentId',11558)
-PublishComponent.add_field(2,'Qualifier',11775)
-PublishComponent.add_field(3,'Component_',11592)
-PublishComponent.add_field(4,'AppData',8191)
-PublishComponent.add_field(5,'Feature_',3366)
-
-RadioButton = Table('RadioButton')
-RadioButton.add_field(1,'Property',11592)
-RadioButton.add_field(2,'Order',9474)
-RadioButton.add_field(3,'Value',3392)
-RadioButton.add_field(4,'X',1282)
-RadioButton.add_field(5,'Y',1282)
-RadioButton.add_field(6,'Width',1282)
-RadioButton.add_field(7,'Height',1282)
-RadioButton.add_field(8,'Text',8000)
-RadioButton.add_field(9,'Help',7986)
-
-Registry = Table('Registry')
-Registry.add_field(1,'Registry',11592)
-Registry.add_field(2,'Root',1282)
-Registry.add_field(3,'Key',4095)
-Registry.add_field(4,'Name',8191)
-Registry.add_field(5,'Value',7936)
-Registry.add_field(6,'Component_',3400)
-
-RegLocator = Table('RegLocator')
-RegLocator.add_field(1,'Signature_',11592)
-RegLocator.add_field(2,'Root',1282)
-RegLocator.add_field(3,'Key',3583)
-RegLocator.add_field(4,'Name',7679)
-RegLocator.add_field(5,'Type',5378)
-
-RemoveFile = Table('RemoveFile')
-RemoveFile.add_field(1,'FileKey',11592)
-RemoveFile.add_field(2,'Component_',3400)
-RemoveFile.add_field(3,'FileName',8191)
-RemoveFile.add_field(4,'DirProperty',3400)
-RemoveFile.add_field(5,'InstallMode',1282)
-
-RemoveIniFile = Table('RemoveIniFile')
-RemoveIniFile.add_field(1,'RemoveIniFile',11592)
-RemoveIniFile.add_field(2,'FileName',4095)
-RemoveIniFile.add_field(3,'DirProperty',7496)
-RemoveIniFile.add_field(4,'Section',3936)
-RemoveIniFile.add_field(5,'Key',3968)
-RemoveIniFile.add_field(6,'Value',8191)
-RemoveIniFile.add_field(7,'Action',1282)
-RemoveIniFile.add_field(8,'Component_',3400)
-
-RemoveRegistry = Table('RemoveRegistry')
-RemoveRegistry.add_field(1,'RemoveRegistry',11592)
-RemoveRegistry.add_field(2,'Root',1282)
-RemoveRegistry.add_field(3,'Key',4095)
-RemoveRegistry.add_field(4,'Name',8191)
-RemoveRegistry.add_field(5,'Component_',3400)
-
-ReserveCost = Table('ReserveCost')
-ReserveCost.add_field(1,'ReserveKey',11592)
-ReserveCost.add_field(2,'Component_',3400)
-ReserveCost.add_field(3,'ReserveFolder',7496)
-ReserveCost.add_field(4,'ReserveLocal',260)
-ReserveCost.add_field(5,'ReserveSource',260)
-
-SelfReg = Table('SelfReg')
-SelfReg.add_field(1,'File_',11592)
-SelfReg.add_field(2,'Cost',5378)
-
-ServiceControl = Table('ServiceControl')
-ServiceControl.add_field(1,'ServiceControl',11592)
-ServiceControl.add_field(2,'Name',4095)
-ServiceControl.add_field(3,'Event',1282)
-ServiceControl.add_field(4,'Arguments',8191)
-ServiceControl.add_field(5,'Wait',5378)
-ServiceControl.add_field(6,'Component_',3400)
-
-ServiceInstall = Table('ServiceInstall')
-ServiceInstall.add_field(1,'ServiceInstall',11592)
-ServiceInstall.add_field(2,'Name',3583)
-ServiceInstall.add_field(3,'DisplayName',8191)
-ServiceInstall.add_field(4,'ServiceType',260)
-ServiceInstall.add_field(5,'StartType',260)
-ServiceInstall.add_field(6,'ErrorControl',260)
-ServiceInstall.add_field(7,'LoadOrderGroup',7679)
-ServiceInstall.add_field(8,'Dependencies',7679)
-ServiceInstall.add_field(9,'StartName',7679)
-ServiceInstall.add_field(10,'Password',7679)
-ServiceInstall.add_field(11,'Arguments',7679)
-ServiceInstall.add_field(12,'Component_',3400)
-ServiceInstall.add_field(13,'Description',8191)
-
-Shortcut = Table('Shortcut')
-Shortcut.add_field(1,'Shortcut',11592)
-Shortcut.add_field(2,'Directory_',3400)
-Shortcut.add_field(3,'Name',3968)
-Shortcut.add_field(4,'Component_',3400)
-Shortcut.add_field(5,'Target',3400)
-Shortcut.add_field(6,'Arguments',7679)
-Shortcut.add_field(7,'Description',8191)
-Shortcut.add_field(8,'Hotkey',5378)
-Shortcut.add_field(9,'Icon_',7496)
-Shortcut.add_field(10,'IconIndex',5378)
-Shortcut.add_field(11,'ShowCmd',5378)
-Shortcut.add_field(12,'WkDir',7496)
-
-Signature = Table('Signature')
-Signature.add_field(1,'Signature',11592)
-Signature.add_field(2,'FileName',3583)
-Signature.add_field(3,'MinVersion',7444)
-Signature.add_field(4,'MaxVersion',7444)
-Signature.add_field(5,'MinSize',4356)
-Signature.add_field(6,'MaxSize',4356)
-Signature.add_field(7,'MinDate',4356)
-Signature.add_field(8,'MaxDate',4356)
-Signature.add_field(9,'Languages',7679)
-
-TextStyle = Table('TextStyle')
-TextStyle.add_field(1,'TextStyle',11592)
-TextStyle.add_field(2,'FaceName',3360)
-TextStyle.add_field(3,'Size',1282)
-TextStyle.add_field(4,'Color',4356)
-TextStyle.add_field(5,'StyleBits',5378)
-
-TypeLib = Table('TypeLib')
-TypeLib.add_field(1,'LibID',11558)
-TypeLib.add_field(2,'Language',9474)
-TypeLib.add_field(3,'Component_',11592)
-TypeLib.add_field(4,'Version',4356)
-TypeLib.add_field(5,'Description',8064)
-TypeLib.add_field(6,'Directory_',7496)
-TypeLib.add_field(7,'Feature_',3366)
-TypeLib.add_field(8,'Cost',4356)
-
-UIText = Table('UIText')
-UIText.add_field(1,'Key',11592)
-UIText.add_field(2,'Text',8191)
-
-Upgrade = Table('Upgrade')
-Upgrade.add_field(1,'UpgradeCode',11558)
-Upgrade.add_field(2,'VersionMin',15636)
-Upgrade.add_field(3,'VersionMax',15636)
-Upgrade.add_field(4,'Language',15871)
-Upgrade.add_field(5,'Attributes',8452)
-Upgrade.add_field(6,'Remove',7679)
-Upgrade.add_field(7,'ActionProperty',3400)
-
-Verb = Table('Verb')
-Verb.add_field(1,'Extension_',11775)
-Verb.add_field(2,'Verb',11552)
-Verb.add_field(3,'Sequence',5378)
-Verb.add_field(4,'Command',8191)
-Verb.add_field(5,'Argument',8191)
-
-tables=[_Validation, ActionText, AdminExecuteSequence, Condition, AdminUISequence, AdvtExecuteSequence, AdvtUISequence, AppId, AppSearch, Property, BBControl, Billboard, Feature, Binary, BindImage, File, CCPSearch, CheckBox, Class, Component, Icon, ProgId, ComboBox, CompLocator, Complus, Directory, Control, Dialog, ControlCondition, ControlEvent, CreateFolder, CustomAction, DrLocator, DuplicateFile, Environment, Error, EventMapping, Extension, MIME, FeatureComponents, FileSFPCatalog, SFPCatalog, Font, IniFile, IniLocator, InstallExecuteSequence, InstallUISequence, IsolatedComponent, LaunchCondition, ListBox, ListView, LockPermissions, Media, MoveFile, MsiAssembly, MsiAssemblyName, MsiDigitalCertificate, MsiDigitalSignature, MsiFileHash, MsiPatchHeaders, ODBCAttribute, ODBCDriver, ODBCDataSource, ODBCSourceAttribute, ODBCTranslator, Patch, PatchPackage, PublishComponent, RadioButton, Registry, RegLocator, RemoveFile, RemoveIniFile, RemoveRegistry, ReserveCost, SelfReg, ServiceControl, ServiceInstall, Shortcut, Signature, TextStyle, TypeLib, UIText, Upgrade, Verb]
-
-_Validation_records = [
-('_Validation','Table','N',None, None, None, None, 'Identifier',None, 'Name of table',),
-('_Validation','Column','N',None, None, None, None, 'Identifier',None, 'Name of column',),
-('_Validation','Description','Y',None, None, None, None, 'Text',None, 'Description of column',),
-('_Validation','Set','Y',None, None, None, None, 'Text',None, 'Set of values that are permitted',),
-('_Validation','Category','Y',None, None, None, None, None, 'Text;Formatted;Template;Condition;Guid;Path;Version;Language;Identifier;Binary;UpperCase;LowerCase;Filename;Paths;AnyPath;WildCardFilename;RegPath;KeyFormatted;CustomSource;Property;Cabinet;Shortcut;URL','String category',),
-('_Validation','KeyColumn','Y',1,32,None, None, None, None, 'Column to which foreign key connects',),
-('_Validation','KeyTable','Y',None, None, None, None, 'Identifier',None, 'For foreign key, Name of table to which data must link',),
-('_Validation','MaxValue','Y',-2147483647,2147483647,None, None, None, None, 'Maximum value allowed',),
-('_Validation','MinValue','Y',-2147483647,2147483647,None, None, None, None, 'Minimum value allowed',),
-('_Validation','Nullable','N',None, None, None, None, None, 'Y;N;@','Whether the column is nullable',),
-('ActionText','Description','Y',None, None, None, None, 'Text',None, 'Localized description displayed in progress dialog and log when action is executing.',),
-('ActionText','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to be described.',),
-('ActionText','Template','Y',None, None, None, None, 'Template',None, 'Optional localized format template used to format action data records for display during action execution.',),
-('AdminExecuteSequence','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to invoke, either in the engine or the handler DLL.',),
-('AdminExecuteSequence','Condition','Y',None, None, None, None, 'Condition',None, 'Optional expression which skips the action if evaluates to expFalse.If the expression syntax is invalid, the engine will terminate, returning iesBadActionData.',),
-('AdminExecuteSequence','Sequence','Y',-4,32767,None, None, None, None, 'Number that determines the sort order in which the actions are to be executed.  Leave blank to suppress action.',),
-('Condition','Condition','Y',None, None, None, None, 'Condition',None, 'Expression evaluated to determine if Level in the Feature table is to change.',),
-('Condition','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Reference to a Feature entry in Feature table.',),
-('Condition','Level','N',0,32767,None, None, None, None, 'New selection Level to set in Feature table if Condition evaluates to TRUE.',),
-('AdminUISequence','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to invoke, either in the engine or the handler DLL.',),
-('AdminUISequence','Condition','Y',None, None, None, None, 'Condition',None, 'Optional expression which skips the action if evaluates to expFalse.If the expression syntax is invalid, the engine will terminate, returning iesBadActionData.',),
-('AdminUISequence','Sequence','Y',-4,32767,None, None, None, None, 'Number that determines the sort order in which the actions are to be executed.  Leave blank to suppress action.',),
-('AdvtExecuteSequence','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to invoke, either in the engine or the handler DLL.',),
-('AdvtExecuteSequence','Condition','Y',None, None, None, None, 'Condition',None, 'Optional expression which skips the action if evaluates to expFalse.If the expression syntax is invalid, the engine will terminate, returning iesBadActionData.',),
-('AdvtExecuteSequence','Sequence','Y',-4,32767,None, None, None, None, 'Number that determines the sort order in which the actions are to be executed.  Leave blank to suppress action.',),
-('AdvtUISequence','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to invoke, either in the engine or the handler DLL.',),
-('AdvtUISequence','Condition','Y',None, None, None, None, 'Condition',None, 'Optional expression which skips the action if evaluates to expFalse.If the expression syntax is invalid, the engine will terminate, returning iesBadActionData.',),
-('AdvtUISequence','Sequence','Y',-4,32767,None, None, None, None, 'Number that determines the sort order in which the actions are to be executed.  Leave blank to suppress action.',),
-('AppId','AppId','N',None, None, None, None, 'Guid',None, None, ),
-('AppId','ActivateAtStorage','Y',0,1,None, None, None, None, None, ),
-('AppId','DllSurrogate','Y',None, None, None, None, 'Text',None, None, ),
-('AppId','LocalService','Y',None, None, None, None, 'Text',None, None, ),
-('AppId','RemoteServerName','Y',None, None, None, None, 'Formatted',None, None, ),
-('AppId','RunAsInteractiveUser','Y',0,1,None, None, None, None, None, ),
-('AppId','ServiceParameters','Y',None, None, None, None, 'Text',None, None, ),
-('AppSearch','Property','N',None, None, None, None, 'Identifier',None, 'The property associated with a Signature',),
-('AppSearch','Signature_','N',None, None, 'Signature;RegLocator;IniLocator;DrLocator;CompLocator',1,'Identifier',None, 'The Signature_ represents a unique file signature and is also the foreign key in the Signature,  RegLocator, IniLocator, CompLocator and the DrLocator tables.',),
-('Property','Property','N',None, None, None, None, 'Identifier',None, 'Name of property, uppercase if settable by launcher or loader.',),
-('Property','Value','N',None, None, None, None, 'Text',None, 'String value for property.  Never null or empty.',),
-('BBControl','Type','N',None, None, None, None, 'Identifier',None, 'The type of the control.',),
-('BBControl','Y','N',0,32767,None, None, None, None, 'Vertical coordinate of the upper left corner of the bounding rectangle of the control.',),
-('BBControl','Text','Y',None, None, None, None, 'Text',None, 'A string used to set the initial text contained within a control (if appropriate).',),
-('BBControl','BBControl','N',None, None, None, None, 'Identifier',None, 'Name of the control. This name must be unique within a billboard, but can repeat on different billboard.',),
-('BBControl','Attributes','Y',0,2147483647,None, None, None, None, 'A 32-bit word that specifies the attribute flags to be applied to this control.',),
-('BBControl','Billboard_','N',None, None, 'Billboard',1,'Identifier',None, 'External key to the Billboard table, name of the billboard.',),
-('BBControl','Height','N',0,32767,None, None, None, None, 'Height of the bounding rectangle of the control.',),
-('BBControl','Width','N',0,32767,None, None, None, None, 'Width of the bounding rectangle of the control.',),
-('BBControl','X','N',0,32767,None, None, None, None, 'Horizontal coordinate of the upper left corner of the bounding rectangle of the control.',),
-('Billboard','Action','Y',None, None, None, None, 'Identifier',None, 'The name of an action. The billboard is displayed during the progress messages received from this action.',),
-('Billboard','Billboard','N',None, None, None, None, 'Identifier',None, 'Name of the billboard.',),
-('Billboard','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'An external key to the Feature Table. The billboard is shown only if this feature is being installed.',),
-('Billboard','Ordering','Y',0,32767,None, None, None, None, 'A positive integer. If there is more than one billboard corresponding to an action they will be shown in the order defined by this column.',),
-('Feature','Description','Y',None, None, None, None, 'Text',None, 'Longer descriptive text describing a visible feature item.',),
-('Feature','Attributes','N',None, None, None, None, None, '0;1;2;4;5;6;8;9;10;16;17;18;20;21;22;24;25;26;32;33;34;36;37;38;48;49;50;52;53;54','Feature attributes',),
-('Feature','Feature','N',None, None, None, None, 'Identifier',None, 'Primary key used to identify a particular feature record.',),
-('Feature','Directory_','Y',None, None, 'Directory',1,'UpperCase',None, 'The name of the Directory that can be configured by the UI. A non-null value will enable the browse button.',),
-('Feature','Level','N',0,32767,None, None, None, None, 'The install level at which record will be initially selected. An install level of 0 will disable an item and prevent its display.',),
-('Feature','Title','Y',None, None, None, None, 'Text',None, 'Short text identifying a visible feature item.',),
-('Feature','Display','Y',0,32767,None, None, None, None, 'Numeric sort order, used to force a specific display ordering.',),
-('Feature','Feature_Parent','Y',None, None, 'Feature',1,'Identifier',None, 'Optional key of a parent record in the same table. If the parent is not selected, then the record will not be installed. Null indicates a root item.',),
-('Binary','Name','N',None, None, None, None, 'Identifier',None, 'Unique key identifying the binary data.',),
-('Binary','Data','N',None, None, None, None, 'Binary',None, 'The unformatted binary data.',),
-('BindImage','File_','N',None, None, 'File',1,'Identifier',None, 'The index into the File table. This must be an executable file.',),
-('BindImage','Path','Y',None, None, None, None, 'Paths',None, 'A list of ;  delimited paths that represent the paths to be searched for the import DLLS. The list is usually a list of properties each enclosed within square brackets [] .',),
-('File','Sequence','N',1,32767,None, None, None, None, 'Sequence with respect to the media images; order must track cabinet order.',),
-('File','Attributes','Y',0,32767,None, None, None, None, 'Integer containing bit flags representing file attributes (with the decimal value of each bit position in parentheses)',),
-('File','File','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token, must match identifier in cabinet.  For uncompressed files, this field is ignored.',),
-('File','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key referencing Component that controls the file.',),
-('File','FileName','N',None, None, None, None, 'Filename',None, 'File name used for installation, may be localized.  This may contain a "short name|long name" pair.',),
-('File','FileSize','N',0,2147483647,None, None, None, None, 'Size of file in bytes (integer).',),
-('File','Language','Y',None, None, None, None, 'Language',None, 'List of decimal language Ids, comma-separated if more than one.',),
-('File','Version','Y',None, None, 'File',1,'Version',None, 'Version string for versioned files;  Blank for unversioned files.',),
-('CCPSearch','Signature_','N',None, None, 'Signature;RegLocator;IniLocator;DrLocator;CompLocator',1,'Identifier',None, 'The Signature_ represents a unique file signature and is also the foreign key in the Signature,  RegLocator, IniLocator, CompLocator and the DrLocator tables.',),
-('CheckBox','Property','N',None, None, None, None, 'Identifier',None, 'A named property to be tied to the item.',),
-('CheckBox','Value','Y',None, None, None, None, 'Formatted',None, 'The value string associated with the item.',),
-('Class','Description','Y',None, None, None, None, 'Text',None, 'Localized description for the Class.',),
-('Class','Attributes','Y',None, 32767,None, None, None, None, 'Class registration attributes.',),
-('Class','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Required foreign key into the Feature Table, specifying the feature to validate or install in order for the CLSID factory to be operational.',),
-('Class','AppId_','Y',None, None, 'AppId',1,'Guid',None, 'Optional AppID containing DCOM information for associated application (string GUID).',),
-('Class','Argument','Y',None, None, None, None, 'Formatted',None, 'optional argument for LocalServers.',),
-('Class','CLSID','N',None, None, None, None, 'Guid',None, 'The CLSID of an OLE factory.',),
-('Class','Component_','N',None, None, 'Component',1,'Identifier',None, 'Required foreign key into the Component Table, specifying the component for which to return a path when called through LocateComponent.',),
-('Class','Context','N',None, None, None, None, 'Identifier',None, 'The numeric server context for this server. CLSCTX_xxxx',),
-('Class','DefInprocHandler','Y',None, None, None, None, 'Filename','1;2;3','Optional default inproc handler.  Only optionally provided if Context=CLSCTX_LOCAL_SERVER.  Typically "ole32.dll" or "mapi32.dll"',),
-('Class','FileTypeMask','Y',None, None, None, None, 'Text',None, 'Optional string containing information for the HKCRthis CLSID key. If multiple patterns exist, they must be delimited by a semicolon, and numeric subkeys will be generated: 0,1,2...',),
-('Class','Icon_','Y',None, None, 'Icon',1,'Identifier',None, 'Optional foreign key into the Icon Table, specifying the icon file associated with this CLSID. Will be written under the DefaultIcon key.',),
-('Class','IconIndex','Y',-32767,32767,None, None, None, None, 'Optional icon index.',),
-('Class','ProgId_Default','Y',None, None, 'ProgId',1,'Text',None, 'Optional ProgId associated with this CLSID.',),
-('Component','Condition','Y',None, None, None, None, 'Condition',None, "A conditional statement that will disable this component if the specified condition evaluates to the 'True' state. If a component is disabled, it will not be installed, regardless of the 'Action' state associated with the component.",),
-('Component','Attributes','N',None, None, None, None, None, None, 'Remote execution option, one of irsEnum',),
-('Component','Component','N',None, None, None, None, 'Identifier',None, 'Primary key used to identify a particular component record.',),
-('Component','ComponentId','Y',None, None, None, None, 'Guid',None, 'A string GUID unique to this component, version, and language.',),
-('Component','Directory_','N',None, None, 'Directory',1,'Identifier',None, 'Required key of a Directory table record. This is actually a property name whose value contains the actual path, set either by the AppSearch action or with the default setting obtained from the Directory table.',),
-('Component','KeyPath','Y',None, None, 'File;Registry;ODBCDataSource',1,'Identifier',None, 'Either the primary key into the File table, Registry table, or ODBCDataSource table. This extract path is stored when the component is installed, and is used to detect the presence of the component and to return the path to it.',),
-('Icon','Name','N',None, None, None, None, 'Identifier',None, 'Primary key. Name of the icon file.',),
-('Icon','Data','N',None, None, None, None, 'Binary',None, 'Binary stream. The binary icon data in PE (.DLL or .EXE) or icon (.ICO) format.',),
-('ProgId','Description','Y',None, None, None, None, 'Text',None, 'Localized description for the Program identifier.',),
-('ProgId','Icon_','Y',None, None, 'Icon',1,'Identifier',None, 'Optional foreign key into the Icon Table, specifying the icon file associated with this ProgId. Will be written under the DefaultIcon key.',),
-('ProgId','IconIndex','Y',-32767,32767,None, None, None, None, 'Optional icon index.',),
-('ProgId','ProgId','N',None, None, None, None, 'Text',None, 'The Program Identifier. Primary key.',),
-('ProgId','Class_','Y',None, None, 'Class',1,'Guid',None, 'The CLSID of an OLE factory corresponding to the ProgId.',),
-('ProgId','ProgId_Parent','Y',None, None, 'ProgId',1,'Text',None, 'The Parent Program Identifier. If specified, the ProgId column becomes a version independent prog id.',),
-('ComboBox','Text','Y',None, None, None, None, 'Formatted',None, 'The visible text to be assigned to the item. Optional. If this entry or the entire column is missing, the text is the same as the value.',),
-('ComboBox','Property','N',None, None, None, None, 'Identifier',None, 'A named property to be tied to this item. All the items tied to the same property become part of the same combobox.',),
-('ComboBox','Value','N',None, None, None, None, 'Formatted',None, 'The value string associated with this item. Selecting the line will set the associated property to this value.',),
-('ComboBox','Order','N',1,32767,None, None, None, None, 'A positive integer used to determine the ordering of the items within one list.\tThe integers do not have to be consecutive.',),
-('CompLocator','Type','Y',0,1,None, None, None, None, 'A boolean value that determines if the registry value is a filename or a directory location.',),
-('CompLocator','Signature_','N',None, None, None, None, 'Identifier',None, 'The table key. The Signature_ represents a unique file signature and is also the foreign key in the Signature table.',),
-('CompLocator','ComponentId','N',None, None, None, None, 'Guid',None, 'A string GUID unique to this component, version, and language.',),
-('Complus','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key referencing Component that controls the ComPlus component.',),
-('Complus','ExpType','Y',0,32767,None, None, None, None, 'ComPlus component attributes.',),
-('Directory','Directory','N',None, None, None, None, 'Identifier',None, 'Unique identifier for directory entry, primary key. If a property by this name is defined, it contains the full path to the directory.',),
-('Directory','DefaultDir','N',None, None, None, None, 'DefaultDir',None, "The default sub-path under parent's path.",),
-('Directory','Directory_Parent','Y',None, None, 'Directory',1,'Identifier',None, 'Reference to the entry in this table specifying the default parent directory. A record parented to itself or with a Null parent represents a root of the install tree.',),
-('Control','Type','N',None, None, None, None, 'Identifier',None, 'The type of the control.',),
-('Control','Y','N',0,32767,None, None, None, None, 'Vertical coordinate of the upper left corner of the bounding rectangle of the control.',),
-('Control','Text','Y',None, None, None, None, 'Formatted',None, 'A string used to set the initial text contained within a control (if appropriate).',),
-('Control','Property','Y',None, None, None, None, 'Identifier',None, 'The name of a defined property to be linked to this control. ',),
-('Control','Attributes','Y',0,2147483647,None, None, None, None, 'A 32-bit word that specifies the attribute flags to be applied to this control.',),
-('Control','Height','N',0,32767,None, None, None, None, 'Height of the bounding rectangle of the control.',),
-('Control','Width','N',0,32767,None, None, None, None, 'Width of the bounding rectangle of the control.',),
-('Control','X','N',0,32767,None, None, None, None, 'Horizontal coordinate of the upper left corner of the bounding rectangle of the control.',),
-('Control','Control','N',None, None, None, None, 'Identifier',None, 'Name of the control. This name must be unique within a dialog, but can repeat on different dialogs. ',),
-('Control','Control_Next','Y',None, None, 'Control',2,'Identifier',None, 'The name of an other control on the same dialog. This link defines the tab order of the controls. The links have to form one or more cycles!',),
-('Control','Dialog_','N',None, None, 'Dialog',1,'Identifier',None, 'External key to the Dialog table, name of the dialog.',),
-('Control','Help','Y',None, None, None, None, 'Text',None, 'The help strings used with the button. The text is optional. ',),
-('Dialog','Attributes','Y',0,2147483647,None, None, None, None, 'A 32-bit word that specifies the attribute flags to be applied to this dialog.',),
-('Dialog','Height','N',0,32767,None, None, None, None, 'Height of the bounding rectangle of the dialog.',),
-('Dialog','Width','N',0,32767,None, None, None, None, 'Width of the bounding rectangle of the dialog.',),
-('Dialog','Dialog','N',None, None, None, None, 'Identifier',None, 'Name of the dialog.',),
-('Dialog','Control_Cancel','Y',None, None, 'Control',2,'Identifier',None, 'Defines the cancel control. Hitting escape or clicking on the close icon on the dialog is equivalent to pushing this button.',),
-('Dialog','Control_Default','Y',None, None, 'Control',2,'Identifier',None, 'Defines the default control. Hitting return is equivalent to pushing this button.',),
-('Dialog','Control_First','N',None, None, 'Control',2,'Identifier',None, 'Defines the control that has the focus when the dialog is created.',),
-('Dialog','HCentering','N',0,100,None, None, None, None, 'Horizontal position of the dialog on a 0-100 scale. 0 means left end, 100 means right end of the screen, 50 center.',),
-('Dialog','Title','Y',None, None, None, None, 'Formatted',None, "A text string specifying the title to be displayed in the title bar of the dialog's window.",),
-('Dialog','VCentering','N',0,100,None, None, None, None, 'Vertical position of the dialog on a 0-100 scale. 0 means top end, 100 means bottom end of the screen, 50 center.',),
-('ControlCondition','Action','N',None, None, None, None, None, 'Default;Disable;Enable;Hide;Show','The desired action to be taken on the specified control.',),
-('ControlCondition','Condition','N',None, None, None, None, 'Condition',None, 'A standard conditional statement that specifies under which conditions the action should be triggered.',),
-('ControlCondition','Dialog_','N',None, None, 'Dialog',1,'Identifier',None, 'A foreign key to the Dialog table, name of the dialog.',),
-('ControlCondition','Control_','N',None, None, 'Control',2,'Identifier',None, 'A foreign key to the Control table, name of the control.',),
-('ControlEvent','Condition','Y',None, None, None, None, 'Condition',None, 'A standard conditional statement that specifies under which conditions an event should be triggered.',),
-('ControlEvent','Ordering','Y',0,2147483647,None, None, None, None, 'An integer used to order several events tied to the same control. Can be left blank.',),
-('ControlEvent','Argument','N',None, None, None, None, 'Formatted',None, 'A value to be used as a modifier when triggering a particular event.',),
-('ControlEvent','Dialog_','N',None, None, 'Dialog',1,'Identifier',None, 'A foreign key to the Dialog table, name of the dialog.',),
-('ControlEvent','Control_','N',None, None, 'Control',2,'Identifier',None, 'A foreign key to the Control table, name of the control',),
-('ControlEvent','Event','N',None, None, None, None, 'Formatted',None, 'An identifier that specifies the type of the event that should take place when the user interacts with control specified by the first two entries.',),
-('CreateFolder','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table.',),
-('CreateFolder','Directory_','N',None, None, 'Directory',1,'Identifier',None, 'Primary key, could be foreign key into the Directory table.',),
-('CustomAction','Type','N',1,16383,None, None, None, None, 'The numeric custom action type, consisting of source location, code type, entry, option flags.',),
-('CustomAction','Action','N',None, None, None, None, 'Identifier',None, 'Primary key, name of action, normally appears in sequence table unless private use.',),
-('CustomAction','Source','Y',None, None, None, None, 'CustomSource',None, 'The table reference of the source of the code.',),
-('CustomAction','Target','Y',None, None, None, None, 'Formatted',None, 'Execution parameter, depends on the type of custom action',),
-('DrLocator','Signature_','N',None, None, None, None, 'Identifier',None, 'The Signature_ represents a unique file signature and is also the foreign key in the Signature table.',),
-('DrLocator','Path','Y',None, None, None, None, 'AnyPath',None, 'The path on the user system. This is either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.',),
-('DrLocator','Depth','Y',0,32767,None, None, None, None, 'The depth below the path to which the Signature_ is recursively searched. If absent, the depth is assumed to be 0.',),
-('DrLocator','Parent','Y',None, None, None, None, 'Identifier',None, 'The parent file signature. It is also a foreign key in the Signature table. If null and the Path column does not expand to a full path, then all the fixed drives of the user system are searched using the Path.',),
-('DuplicateFile','File_','N',None, None, 'File',1,'Identifier',None, 'Foreign key referencing the source file to be duplicated.',),
-('DuplicateFile','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key referencing Component that controls the duplicate file.',),
-('DuplicateFile','DestFolder','Y',None, None, None, None, 'Identifier',None, 'Name of a property whose value is assumed to resolve to the full pathname to a destination folder.',),
-('DuplicateFile','DestName','Y',None, None, None, None, 'Filename',None, 'Filename to be given to the duplicate file.',),
-('DuplicateFile','FileKey','N',None, None, None, None, 'Identifier',None, 'Primary key used to identify a particular file entry',),
-('Environment','Name','N',None, None, None, None, 'Text',None, 'The name of the environmental value.',),
-('Environment','Value','Y',None, None, None, None, 'Formatted',None, 'The value to set in the environmental settings.',),
-('Environment','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table referencing component that controls the installing of the environmental value.',),
-('Environment','Environment','N',None, None, None, None, 'Identifier',None, 'Unique identifier for the environmental variable setting',),
-('Error','Error','N',0,32767,None, None, None, None, 'Integer error number, obtained from header file IError(...) macros.',),
-('Error','Message','Y',None, None, None, None, 'Template',None, 'Error formatting template, obtained from user ed. or localizers.',),
-('EventMapping','Dialog_','N',None, None, 'Dialog',1,'Identifier',None, 'A foreign key to the Dialog table, name of the Dialog.',),
-('EventMapping','Control_','N',None, None, 'Control',2,'Identifier',None, 'A foreign key to the Control table, name of the control.',),
-('EventMapping','Event','N',None, None, None, None, 'Identifier',None, 'An identifier that specifies the type of the event that the control subscribes to.',),
-('EventMapping','Attribute','N',None, None, None, None, 'Identifier',None, 'The name of the control attribute, that is set when this event is received.',),
-('Extension','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Required foreign key into the Feature Table, specifying the feature to validate or install in order for the CLSID factory to be operational.',),
-('Extension','Component_','N',None, None, 'Component',1,'Identifier',None, 'Required foreign key into the Component Table, specifying the component for which to return a path when called through LocateComponent.',),
-('Extension','Extension','N',None, None, None, None, 'Text',None, 'The extension associated with the table row.',),
-('Extension','MIME_','Y',None, None, 'MIME',1,'Text',None, 'Optional Context identifier, typically "type/format" associated with the extension',),
-('Extension','ProgId_','Y',None, None, 'ProgId',1,'Text',None, 'Optional ProgId associated with this extension.',),
-('MIME','CLSID','Y',None, None, None, None, 'Guid',None, 'Optional associated CLSID.',),
-('MIME','ContentType','N',None, None, None, None, 'Text',None, 'Primary key. Context identifier, typically "type/format".',),
-('MIME','Extension_','N',None, None, 'Extension',1,'Text',None, 'Optional associated extension (without dot)',),
-('FeatureComponents','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Foreign key into Feature table.',),
-('FeatureComponents','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into Component table.',),
-('FileSFPCatalog','File_','N',None, None, 'File',1,'Identifier',None, 'File associated with the catalog',),
-('FileSFPCatalog','SFPCatalog_','N',None, None, 'SFPCatalog',1,'Filename',None, 'Catalog associated with the file',),
-('SFPCatalog','SFPCatalog','N',None, None, None, None, 'Filename',None, 'File name for the catalog.',),
-('SFPCatalog','Catalog','N',None, None, None, None, 'Binary',None, 'SFP Catalog',),
-('SFPCatalog','Dependency','Y',None, None, None, None, 'Formatted',None, 'Parent catalog - only used by SFP',),
-('Font','File_','N',None, None, 'File',1,'Identifier',None, 'Primary key, foreign key into File table referencing font file.',),
-('Font','FontTitle','Y',None, None, None, None, 'Text',None, 'Font name.',),
-('IniFile','Action','N',None, None, None, None, None, '0;1;3','The type of modification to be made, one of iifEnum',),
-('IniFile','Value','N',None, None, None, None, 'Formatted',None, 'The value to be written.',),
-('IniFile','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table referencing component that controls the installing of the .INI value.',),
-('IniFile','FileName','N',None, None, None, None, 'Filename',None, 'The .INI file name in which to write the information',),
-('IniFile','IniFile','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('IniFile','DirProperty','Y',None, None, None, None, 'Identifier',None, 'Foreign key into the Directory table denoting the directory where the .INI file is.',),
-('IniFile','Key','N',None, None, None, None, 'Formatted',None, 'The .INI file key below Section.',),
-('IniFile','Section','N',None, None, None, None, 'Formatted',None, 'The .INI file Section.',),
-('IniLocator','Type','Y',0,2,None, None, None, None, 'An integer value that determines if the .INI value read is a filename or a directory location or to be used as is w/o interpretation.',),
-('IniLocator','Signature_','N',None, None, None, None, 'Identifier',None, 'The table key. The Signature_ represents a unique file signature and is also the foreign key in the Signature table.',),
-('IniLocator','FileName','N',None, None, None, None, 'Filename',None, 'The .INI file name.',),
-('IniLocator','Key','N',None, None, None, None, 'Text',None, 'Key value (followed by an equals sign in INI file).',),
-('IniLocator','Section','N',None, None, None, None, 'Text',None, 'Section name within in file (within square brackets in INI file).',),
-('IniLocator','Field','Y',0,32767,None, None, None, None, 'The field in the .INI line. If Field is null or 0 the entire line is read.',),
-('InstallExecuteSequence','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to invoke, either in the engine or the handler DLL.',),
-('InstallExecuteSequence','Condition','Y',None, None, None, None, 'Condition',None, 'Optional expression which skips the action if evaluates to expFalse.If the expression syntax is invalid, the engine will terminate, returning iesBadActionData.',),
-('InstallExecuteSequence','Sequence','Y',-4,32767,None, None, None, None, 'Number that determines the sort order in which the actions are to be executed.  Leave blank to suppress action.',),
-('InstallUISequence','Action','N',None, None, None, None, 'Identifier',None, 'Name of action to invoke, either in the engine or the handler DLL.',),
-('InstallUISequence','Condition','Y',None, None, None, None, 'Condition',None, 'Optional expression which skips the action if evaluates to expFalse.If the expression syntax is invalid, the engine will terminate, returning iesBadActionData.',),
-('InstallUISequence','Sequence','Y',-4,32767,None, None, None, None, 'Number that determines the sort order in which the actions are to be executed.  Leave blank to suppress action.',),
-('IsolatedComponent','Component_Application','N',None, None, 'Component',1,'Identifier',None, 'Key to Component table item for application',),
-('IsolatedComponent','Component_Shared','N',None, None, 'Component',1,'Identifier',None, 'Key to Component table item to be isolated',),
-('LaunchCondition','Description','N',None, None, None, None, 'Formatted',None, 'Localizable text to display when condition fails and install must abort.',),
-('LaunchCondition','Condition','N',None, None, None, None, 'Condition',None, 'Expression which must evaluate to TRUE in order for install to commence.',),
-('ListBox','Text','Y',None, None, None, None, 'Text',None, 'The visible text to be assigned to the item. Optional. If this entry or the entire column is missing, the text is the same as the value.',),
-('ListBox','Property','N',None, None, None, None, 'Identifier',None, 'A named property to be tied to this item. All the items tied to the same property become part of the same listbox.',),
-('ListBox','Value','N',None, None, None, None, 'Formatted',None, 'The value string associated with this item. Selecting the line will set the associated property to this value.',),
-('ListBox','Order','N',1,32767,None, None, None, None, 'A positive integer used to determine the ordering of the items within one list..The integers do not have to be consecutive.',),
-('ListView','Text','Y',None, None, None, None, 'Text',None, 'The visible text to be assigned to the item. Optional. If this entry or the entire column is missing, the text is the same as the value.',),
-('ListView','Property','N',None, None, None, None, 'Identifier',None, 'A named property to be tied to this item. All the items tied to the same property become part of the same listview.',),
-('ListView','Value','N',None, None, None, None, 'Identifier',None, 'The value string associated with this item. Selecting the line will set the associated property to this value.',),
-('ListView','Order','N',1,32767,None, None, None, None, 'A positive integer used to determine the ordering of the items within one list..The integers do not have to be consecutive.',),
-('ListView','Binary_','Y',None, None, 'Binary',1,'Identifier',None, 'The name of the icon to be displayed with the icon. The binary information is looked up from the Binary Table.',),
-('LockPermissions','Table','N',None, None, None, None, 'Identifier','Directory;File;Registry','Reference to another table name',),
-('LockPermissions','Domain','Y',None, None, None, None, 'Formatted',None, 'Domain name for user whose permissions are being set. (usually a property)',),
-('LockPermissions','LockObject','N',None, None, None, None, 'Identifier',None, 'Foreign key into Registry or File table',),
-('LockPermissions','Permission','Y',-2147483647,2147483647,None, None, None, None, 'Permission Access mask.  Full Control = 268435456 (GENERIC_ALL = 0x10000000)',),
-('LockPermissions','User','N',None, None, None, None, 'Formatted',None, 'User for permissions to be set.  (usually a property)',),
-('Media','Source','Y',None, None, None, None, 'Property',None, 'The property defining the location of the cabinet file.',),
-('Media','Cabinet','Y',None, None, None, None, 'Cabinet',None, 'If some or all of the files stored on the media are compressed in a cabinet, the name of that cabinet.',),
-('Media','DiskId','N',1,32767,None, None, None, None, 'Primary key, integer to determine sort order for table.',),
-('Media','DiskPrompt','Y',None, None, None, None, 'Text',None, 'Disk name: the visible text actually printed on the disk.  This will be used to prompt the user when this disk needs to be inserted.',),
-('Media','LastSequence','N',0,32767,None, None, None, None, 'File sequence number for the last file for this media.',),
-('Media','VolumeLabel','Y',None, None, None, None, 'Text',None, 'The label attributed to the volume.',),
-('ModuleComponents','Component','N',None, None, 'Component',1,'Identifier',None, 'Component contained in the module.',),
-('ModuleComponents','Language','N',None, None, 'ModuleSignature',2,None, None, 'Default language ID for module (may be changed by transform).',),
-('ModuleComponents','ModuleID','N',None, None, 'ModuleSignature',1,'Identifier',None, 'Module containing the component.',),
-('ModuleSignature','Language','N',None, None, None, None, None, None, 'Default decimal language of module.',),
-('ModuleSignature','Version','N',None, None, None, None, 'Version',None, 'Version of the module.',),
-('ModuleSignature','ModuleID','N',None, None, None, None, 'Identifier',None, 'Module identifier (String.GUID).',),
-('ModuleDependency','ModuleID','N',None, None, 'ModuleSignature',1,'Identifier',None, 'Module requiring the dependency.',),
-('ModuleDependency','ModuleLanguage','N',None, None, 'ModuleSignature',2,None, None, 'Language of module requiring the dependency.',),
-('ModuleDependency','RequiredID','N',None, None, None, None, None, None, 'String.GUID of required module.',),
-('ModuleDependency','RequiredLanguage','N',None, None, None, None, None, None, 'LanguageID of the required module.',),
-('ModuleDependency','RequiredVersion','Y',None, None, None, None, 'Version',None, 'Version of the required version.',),
-('ModuleExclusion','ModuleID','N',None, None, 'ModuleSignature',1,'Identifier',None, 'String.GUID of module with exclusion requirement.',),
-('ModuleExclusion','ModuleLanguage','N',None, None, 'ModuleSignature',2,None, None, 'LanguageID of module with exclusion requirement.',),
-('ModuleExclusion','ExcludedID','N',None, None, None, None, None, None, 'String.GUID of excluded module.',),
-('ModuleExclusion','ExcludedLanguage','N',None, None, None, None, None, None, 'Language of excluded module.',),
-('ModuleExclusion','ExcludedMaxVersion','Y',None, None, None, None, 'Version',None, 'Maximum version of excluded module.',),
-('ModuleExclusion','ExcludedMinVersion','Y',None, None, None, None, 'Version',None, 'Minimum version of excluded module.',),
-('MoveFile','Component_','N',None, None, 'Component',1,'Identifier',None, 'If this component is not "selected" for installation or removal, no action will be taken on the associated MoveFile entry',),
-('MoveFile','DestFolder','N',None, None, None, None, 'Identifier',None, 'Name of a property whose value is assumed to resolve to the full path to the destination directory',),
-('MoveFile','DestName','Y',None, None, None, None, 'Filename',None, 'Name to be given to the original file after it is moved or copied.  If blank, the destination file will be given the same name as the source file',),
-('MoveFile','FileKey','N',None, None, None, None, 'Identifier',None, 'Primary key that uniquely identifies a particular MoveFile record',),
-('MoveFile','Options','N',0,1,None, None, None, None, 'Integer value specifying the MoveFile operating mode, one of imfoEnum',),
-('MoveFile','SourceFolder','Y',None, None, None, None, 'Identifier',None, 'Name of a property whose value is assumed to resolve to the full path to the source directory',),
-('MoveFile','SourceName','Y',None, None, None, None, 'Text',None, "Name of the source file(s) to be moved or copied.  Can contain the '*' or '?' wildcards.",),
-('MsiAssembly','Attributes','Y',None, None, None, None, None, None, 'Assembly attributes',),
-('MsiAssembly','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Foreign key into Feature table.',),
-('MsiAssembly','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into Component table.',),
-('MsiAssembly','File_Application','Y',None, None, 'File',1,'Identifier',None, 'Foreign key into File table, denoting the application context for private assemblies. Null for global assemblies.',),
-('MsiAssembly','File_Manifest','Y',None, None, 'File',1,'Identifier',None, 'Foreign key into the File table denoting the manifest file for the assembly.',),
-('MsiAssemblyName','Name','N',None, None, None, None, 'Text',None, 'The name part of the name-value pairs for the assembly name.',),
-('MsiAssemblyName','Value','N',None, None, None, None, 'Text',None, 'The value part of the name-value pairs for the assembly name.',),
-('MsiAssemblyName','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into Component table.',),
-('MsiDigitalCertificate','CertData','N',None, None, None, None, 'Binary',None, 'A certificate context blob for a signer certificate',),
-('MsiDigitalCertificate','DigitalCertificate','N',None, None, None, None, 'Identifier',None, 'A unique identifier for the row',),
-('MsiDigitalSignature','Table','N',None, None, None, None, None, 'Media','Reference to another table name (only Media table is supported)',),
-('MsiDigitalSignature','DigitalCertificate_','N',None, None, 'MsiDigitalCertificate',1,'Identifier',None, 'Foreign key to MsiDigitalCertificate table identifying the signer certificate',),
-('MsiDigitalSignature','Hash','Y',None, None, None, None, 'Binary',None, 'The encoded hash blob from the digital signature',),
-('MsiDigitalSignature','SignObject','N',None, None, None, None, 'Text',None, 'Foreign key to Media table',),
-('MsiFileHash','File_','N',None, None, 'File',1,'Identifier',None, 'Primary key, foreign key into File table referencing file with this hash',),
-('MsiFileHash','Options','N',0,32767,None, None, None, None, 'Various options and attributes for this hash.',),
-('MsiFileHash','HashPart1','N',None, None, None, None, None, None, 'Size of file in bytes (integer).',),
-('MsiFileHash','HashPart2','N',None, None, None, None, None, None, 'Size of file in bytes (integer).',),
-('MsiFileHash','HashPart3','N',None, None, None, None, None, None, 'Size of file in bytes (integer).',),
-('MsiFileHash','HashPart4','N',None, None, None, None, None, None, 'Size of file in bytes (integer).',),
-('MsiPatchHeaders','StreamRef','N',None, None, None, None, 'Identifier',None, 'Primary key. A unique identifier for the row.',),
-('MsiPatchHeaders','Header','N',None, None, None, None, 'Binary',None, 'Binary stream. The patch header, used for patch validation.',),
-('ODBCAttribute','Value','Y',None, None, None, None, 'Text',None, 'Value for ODBC driver attribute',),
-('ODBCAttribute','Attribute','N',None, None, None, None, 'Text',None, 'Name of ODBC driver attribute',),
-('ODBCAttribute','Driver_','N',None, None, 'ODBCDriver',1,'Identifier',None, 'Reference to ODBC driver in ODBCDriver table',),
-('ODBCDriver','Description','N',None, None, None, None, 'Text',None, 'Text used as registered name for driver, non-localized',),
-('ODBCDriver','File_','N',None, None, 'File',1,'Identifier',None, 'Reference to key driver file',),
-('ODBCDriver','Component_','N',None, None, 'Component',1,'Identifier',None, 'Reference to associated component',),
-('ODBCDriver','Driver','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized.internal token for driver',),
-('ODBCDriver','File_Setup','Y',None, None, 'File',1,'Identifier',None, 'Optional reference to key driver setup DLL',),
-('ODBCDataSource','Description','N',None, None, None, None, 'Text',None, 'Text used as registered name for data source',),
-('ODBCDataSource','Component_','N',None, None, 'Component',1,'Identifier',None, 'Reference to associated component',),
-('ODBCDataSource','DataSource','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized.internal token for data source',),
-('ODBCDataSource','DriverDescription','N',None, None, None, None, 'Text',None, 'Reference to driver description, may be existing driver',),
-('ODBCDataSource','Registration','N',0,1,None, None, None, None, 'Registration option: 0=machine, 1=user, others t.b.d.',),
-('ODBCSourceAttribute','Value','Y',None, None, None, None, 'Text',None, 'Value for ODBC data source attribute',),
-('ODBCSourceAttribute','Attribute','N',None, None, None, None, 'Text',None, 'Name of ODBC data source attribute',),
-('ODBCSourceAttribute','DataSource_','N',None, None, 'ODBCDataSource',1,'Identifier',None, 'Reference to ODBC data source in ODBCDataSource table',),
-('ODBCTranslator','Description','N',None, None, None, None, 'Text',None, 'Text used as registered name for translator',),
-('ODBCTranslator','File_','N',None, None, 'File',1,'Identifier',None, 'Reference to key translator file',),
-('ODBCTranslator','Component_','N',None, None, 'Component',1,'Identifier',None, 'Reference to associated component',),
-('ODBCTranslator','File_Setup','Y',None, None, 'File',1,'Identifier',None, 'Optional reference to key translator setup DLL',),
-('ODBCTranslator','Translator','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized.internal token for translator',),
-('Patch','Sequence','N',0,32767,None, None, None, None, 'Primary key, sequence with respect to the media images; order must track cabinet order.',),
-('Patch','Attributes','N',0,32767,None, None, None, None, 'Integer containing bit flags representing patch attributes',),
-('Patch','File_','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token, foreign key to File table, must match identifier in cabinet.',),
-('Patch','Header','Y',None, None, None, None, 'Binary',None, 'Binary stream. The patch header, used for patch validation.',),
-('Patch','PatchSize','N',0,2147483647,None, None, None, None, 'Size of patch in bytes (integer).',),
-('Patch','StreamRef_','Y',None, None, None, None, 'Identifier',None, 'Identifier. Foreign key to the StreamRef column of the MsiPatchHeaders table.',),
-('PatchPackage','Media_','N',0,32767,None, None, None, None, 'Foreign key to DiskId column of Media table. Indicates the disk containing the patch package.',),
-('PatchPackage','PatchId','N',None, None, None, None, 'Guid',None, 'A unique string GUID representing this patch.',),
-('PublishComponent','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Foreign key into the Feature table.',),
-('PublishComponent','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table.',),
-('PublishComponent','ComponentId','N',None, None, None, None, 'Guid',None, 'A string GUID that represents the component id that will be requested by the alien product.',),
-('PublishComponent','AppData','Y',None, None, None, None, 'Text',None, 'This is localisable Application specific data that can be associated with a Qualified Component.',),
-('PublishComponent','Qualifier','N',None, None, None, None, 'Text',None, 'This is defined only when the ComponentId column is an Qualified Component Id. This is the Qualifier for ProvideComponentIndirect.',),
-('RadioButton','Y','N',0,32767,None, None, None, None, 'The vertical coordinate of the upper left corner of the bounding rectangle of the radio button.',),
-('RadioButton','Text','Y',None, None, None, None, 'Text',None, 'The visible title to be assigned to the radio button.',),
-('RadioButton','Property','N',None, None, None, None, 'Identifier',None, 'A named property to be tied to this radio button. All the buttons tied to the same property become part of the same group.',),
-('RadioButton','Height','N',0,32767,None, None, None, None, 'The height of the button.',),
-('RadioButton','Width','N',0,32767,None, None, None, None, 'The width of the button.',),
-('RadioButton','X','N',0,32767,None, None, None, None, 'The horizontal coordinate of the upper left corner of the bounding rectangle of the radio button.',),
-('RadioButton','Value','N',None, None, None, None, 'Formatted',None, 'The value string associated with this button. Selecting the button will set the associated property to this value.',),
-('RadioButton','Order','N',1,32767,None, None, None, None, 'A positive integer used to determine the ordering of the items within one list..The integers do not have to be consecutive.',),
-('RadioButton','Help','Y',None, None, None, None, 'Text',None, 'The help strings used with the button. The text is optional.',),
-('Registry','Name','Y',None, None, None, None, 'Formatted',None, 'The registry value name.',),
-('Registry','Value','Y',None, None, None, None, 'Formatted',None, 'The registry value.',),
-('Registry','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table referencing component that controls the installing of the registry value.',),
-('Registry','Key','N',None, None, None, None, 'RegPath',None, 'The key for the registry value.',),
-('Registry','Registry','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('Registry','Root','N',-1,3,None, None, None, None, 'The predefined root key for the registry value, one of rrkEnum.',),
-('RegLocator','Name','Y',None, None, None, None, 'Formatted',None, 'The registry value name.',),
-('RegLocator','Type','Y',0,18,None, None, None, None, 'An integer value that determines if the registry value is a filename or a directory location or to be used as is w/o interpretation.',),
-('RegLocator','Signature_','N',None, None, None, None, 'Identifier',None, 'The table key. The Signature_ represents a unique file signature and is also the foreign key in the Signature table. If the type is 0, the registry values refers a directory, and _Signature is not a foreign key.',),
-('RegLocator','Key','N',None, None, None, None, 'RegPath',None, 'The key for the registry value.',),
-('RegLocator','Root','N',0,3,None, None, None, None, 'The predefined root key for the registry value, one of rrkEnum.',),
-('RemoveFile','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key referencing Component that controls the file to be removed.',),
-('RemoveFile','FileKey','N',None, None, None, None, 'Identifier',None, 'Primary key used to identify a particular file entry',),
-('RemoveFile','FileName','Y',None, None, None, None, 'WildCardFilename',None, 'Name of the file to be removed.',),
-('RemoveFile','DirProperty','N',None, None, None, None, 'Identifier',None, 'Name of a property whose value is assumed to resolve to the full pathname to the folder of the file to be removed.',),
-('RemoveFile','InstallMode','N',None, None, None, None, None, '1;2;3','Installation option, one of iimEnum.',),
-('RemoveIniFile','Action','N',None, None, None, None, None, '2;4','The type of modification to be made, one of iifEnum.',),
-('RemoveIniFile','Value','Y',None, None, None, None, 'Formatted',None, 'The value to be deleted. The value is required when Action is iifIniRemoveTag',),
-('RemoveIniFile','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table referencing component that controls the deletion of the .INI value.',),
-('RemoveIniFile','FileName','N',None, None, None, None, 'Filename',None, 'The .INI file name in which to delete the information',),
-('RemoveIniFile','DirProperty','Y',None, None, None, None, 'Identifier',None, 'Foreign key into the Directory table denoting the directory where the .INI file is.',),
-('RemoveIniFile','Key','N',None, None, None, None, 'Formatted',None, 'The .INI file key below Section.',),
-('RemoveIniFile','Section','N',None, None, None, None, 'Formatted',None, 'The .INI file Section.',),
-('RemoveIniFile','RemoveIniFile','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('RemoveRegistry','Name','Y',None, None, None, None, 'Formatted',None, 'The registry value name.',),
-('RemoveRegistry','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table referencing component that controls the deletion of the registry value.',),
-('RemoveRegistry','Key','N',None, None, None, None, 'RegPath',None, 'The key for the registry value.',),
-('RemoveRegistry','Root','N',-1,3,None, None, None, None, 'The predefined root key for the registry value, one of rrkEnum',),
-('RemoveRegistry','RemoveRegistry','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('ReserveCost','Component_','N',None, None, 'Component',1,'Identifier',None, 'Reserve a specified amount of space if this component is to be installed.',),
-('ReserveCost','ReserveFolder','Y',None, None, None, None, 'Identifier',None, 'Name of a property whose value is assumed to resolve to the full path to the destination directory',),
-('ReserveCost','ReserveKey','N',None, None, None, None, 'Identifier',None, 'Primary key that uniquely identifies a particular ReserveCost record',),
-('ReserveCost','ReserveLocal','N',0,2147483647,None, None, None, None, 'Disk space to reserve if linked component is installed locally.',),
-('ReserveCost','ReserveSource','N',0,2147483647,None, None, None, None, 'Disk space to reserve if linked component is installed to run from the source location.',),
-('SelfReg','File_','N',None, None, 'File',1,'Identifier',None, 'Foreign key into the File table denoting the module that needs to be registered.',),
-('SelfReg','Cost','Y',0,32767,None, None, None, None, 'The cost of registering the module.',),
-('ServiceControl','Name','N',None, None, None, None, 'Formatted',None, 'Name of a service. /, \\, comma and space are invalid',),
-('ServiceControl','Component_','N',None, None, 'Component',1,'Identifier',None, 'Required foreign key into the Component Table that controls the startup of the service',),
-('ServiceControl','Event','N',0,187,None, None, None, None, 'Bit field:  Install:  0x1 = Start, 0x2 = Stop, 0x8 = Delete, Uninstall: 0x10 = Start, 0x20 = Stop, 0x80 = Delete',),
-('ServiceControl','ServiceControl','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('ServiceControl','Arguments','Y',None, None, None, None, 'Formatted',None, 'Arguments for the service.  Separate by [~].',),
-('ServiceControl','Wait','Y',0,1,None, None, None, None, 'Boolean for whether to wait for the service to fully start',),
-('ServiceInstall','Name','N',None, None, None, None, 'Formatted',None, 'Internal Name of the Service',),
-('ServiceInstall','Description','Y',None, None, None, None, 'Text',None, 'Description of service.',),
-('ServiceInstall','Component_','N',None, None, 'Component',1,'Identifier',None, 'Required foreign key into the Component Table that controls the startup of the service',),
-('ServiceInstall','Arguments','Y',None, None, None, None, 'Formatted',None, 'Arguments to include in every start of the service, passed to WinMain',),
-('ServiceInstall','ServiceInstall','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('ServiceInstall','Dependencies','Y',None, None, None, None, 'Formatted',None, 'Other services this depends on to start.  Separate by [~], and end with [~][~]',),
-('ServiceInstall','DisplayName','Y',None, None, None, None, 'Formatted',None, 'External Name of the Service',),
-('ServiceInstall','ErrorControl','N',-2147483647,2147483647,None, None, None, None, 'Severity of error if service fails to start',),
-('ServiceInstall','LoadOrderGroup','Y',None, None, None, None, 'Formatted',None, 'LoadOrderGroup',),
-('ServiceInstall','Password','Y',None, None, None, None, 'Formatted',None, 'password to run service with.  (with StartName)',),
-('ServiceInstall','ServiceType','N',-2147483647,2147483647,None, None, None, None, 'Type of the service',),
-('ServiceInstall','StartName','Y',None, None, None, None, 'Formatted',None, 'User or object name to run service as',),
-('ServiceInstall','StartType','N',0,4,None, None, None, None, 'Type of the service',),
-('Shortcut','Name','N',None, None, None, None, 'Filename',None, 'The name of the shortcut to be created.',),
-('Shortcut','Description','Y',None, None, None, None, 'Text',None, 'The description for the shortcut.',),
-('Shortcut','Component_','N',None, None, 'Component',1,'Identifier',None, 'Foreign key into the Component table denoting the component whose selection gates the shortcut creation/deletion.',),
-('Shortcut','Icon_','Y',None, None, 'Icon',1,'Identifier',None, 'Foreign key into the File table denoting the external icon file for the shortcut.',),
-('Shortcut','IconIndex','Y',-32767,32767,None, None, None, None, 'The icon index for the shortcut.',),
-('Shortcut','Directory_','N',None, None, 'Directory',1,'Identifier',None, 'Foreign key into the Directory table denoting the directory where the shortcut file is created.',),
-('Shortcut','Target','N',None, None, None, None, 'Shortcut',None, 'The shortcut target. This is usually a property that is expanded to a file or a folder that the shortcut points to.',),
-('Shortcut','Arguments','Y',None, None, None, None, 'Formatted',None, 'The command-line arguments for the shortcut.',),
-('Shortcut','Shortcut','N',None, None, None, None, 'Identifier',None, 'Primary key, non-localized token.',),
-('Shortcut','Hotkey','Y',0,32767,None, None, None, None, 'The hotkey for the shortcut. It has the virtual-key code for the key in the low-order byte, and the modifier flags in the high-order byte. ',),
-('Shortcut','ShowCmd','Y',None, None, None, None, None, '1;3;7','The show command for the application window.The following values may be used.',),
-('Shortcut','WkDir','Y',None, None, None, None, 'Identifier',None, 'Name of property defining location of working directory.',),
-('Signature','FileName','N',None, None, None, None, 'Filename',None, 'The name of the file. This may contain a "short name|long name" pair.',),
-('Signature','Signature','N',None, None, None, None, 'Identifier',None, 'The table key. The Signature represents a unique file signature.',),
-('Signature','Languages','Y',None, None, None, None, 'Language',None, 'The languages supported by the file.',),
-('Signature','MaxDate','Y',0,2147483647,None, None, None, None, 'The maximum creation date of the file.',),
-('Signature','MaxSize','Y',0,2147483647,None, None, None, None, 'The maximum size of the file. ',),
-('Signature','MaxVersion','Y',None, None, None, None, 'Text',None, 'The maximum version of the file.',),
-('Signature','MinDate','Y',0,2147483647,None, None, None, None, 'The minimum creation date of the file.',),
-('Signature','MinSize','Y',0,2147483647,None, None, None, None, 'The minimum size of the file.',),
-('Signature','MinVersion','Y',None, None, None, None, 'Text',None, 'The minimum version of the file.',),
-('TextStyle','TextStyle','N',None, None, None, None, 'Identifier',None, 'Name of the style. The primary key of this table. This name is embedded in the texts to indicate a style change.',),
-('TextStyle','Color','Y',0,16777215,None, None, None, None, 'An integer indicating the color of the string in the RGB format (Red, Green, Blue each 0-255, RGB = R + 256*G + 256^2*B).',),
-('TextStyle','FaceName','N',None, None, None, None, 'Text',None, 'A string indicating the name of the font used. Required. The string must be at most 31 characters long.',),
-('TextStyle','Size','N',0,32767,None, None, None, None, 'The size of the font used. This size is given in our units (1/12 of the system font height). Assuming that the system font is set to 12 point size, this is equivalent to the point size.',),
-('TextStyle','StyleBits','Y',0,15,None, None, None, None, 'A combination of style bits.',),
-('TypeLib','Description','Y',None, None, None, None, 'Text',None, None, ),
-('TypeLib','Feature_','N',None, None, 'Feature',1,'Identifier',None, 'Required foreign key into the Feature Table, specifying the feature to validate or install in order for the type library to be operational.',),
-('TypeLib','Component_','N',None, None, 'Component',1,'Identifier',None, 'Required foreign key into the Component Table, specifying the component for which to return a path when called through LocateComponent.',),
-('TypeLib','Directory_','Y',None, None, 'Directory',1,'Identifier',None, 'Optional. The foreign key into the Directory table denoting the path to the help file for the type library.',),
-('TypeLib','Language','N',0,32767,None, None, None, None, 'The language of the library.',),
-('TypeLib','Version','Y',0,16777215,None, None, None, None, 'The version of the library. The minor version is in the lower 8 bits of the integer. The major version is in the next 16 bits. ',),
-('TypeLib','Cost','Y',0,2147483647,None, None, None, None, 'The cost associated with the registration of the typelib. This column is currently optional.',),
-('TypeLib','LibID','N',None, None, None, None, 'Guid',None, 'The GUID that represents the library.',),
-('UIText','Text','Y',None, None, None, None, 'Text',None, 'The localized version of the string.',),
-('UIText','Key','N',None, None, None, None, 'Identifier',None, 'A unique key that identifies the particular string.',),
-('Upgrade','Attributes','N',0,2147483647,None, None, None, None, 'The attributes of this product set.',),
-('Upgrade','Language','Y',None, None, None, None, 'Language',None, 'A comma-separated list of languages for either products in this set or products not in this set.',),
-('Upgrade','ActionProperty','N',None, None, None, None, 'UpperCase',None, 'The property to set when a product in this set is found.',),
-('Upgrade','Remove','Y',None, None, None, None, 'Formatted',None, 'The list of features to remove when uninstalling a product from this set.  The default is "ALL".',),
-('Upgrade','UpgradeCode','N',None, None, None, None, 'Guid',None, 'The UpgradeCode GUID belonging to the products in this set.',),
-('Upgrade','VersionMax','Y',None, None, None, None, 'Text',None, 'The maximum ProductVersion of the products in this set.  The set may or may not include products with this particular version.',),
-('Upgrade','VersionMin','Y',None, None, None, None, 'Text',None, 'The minimum ProductVersion of the products in this set.  The set may or may not include products with this particular version.',),
-('Verb','Sequence','Y',0,32767,None, None, None, None, 'Order within the verbs for a particular extension. Also used simply to specify the default verb.',),
-('Verb','Argument','Y',None, None, None, None, 'Formatted',None, 'Optional value for the command arguments.',),
-('Verb','Extension_','N',None, None, 'Extension',1,'Text',None, 'The extension associated with the table row.',),
-('Verb','Verb','N',None, None, None, None, 'Text',None, 'The verb for the command.',),
-('Verb','Command','Y',None, None, None, None, 'Formatted',None, 'The command text.',),
-]
diff --git a/Lib/msilib/sequence.py b/Lib/msilib/sequence.py
deleted file mode 100644
index 7012a21f857219..00000000000000
--- a/Lib/msilib/sequence.py
+++ /dev/null
@@ -1,126 +0,0 @@
-AdminExecuteSequence = [
-('InstallInitialize', None, 1500),
-('InstallFinalize', None, 6600),
-('InstallFiles', None, 4000),
-('InstallAdminPackage', None, 3900),
-('FileCost', None, 900),
-('CostInitialize', None, 800),
-('CostFinalize', None, 1000),
-('InstallValidate', None, 1400),
-]
-
-AdminUISequence = [
-('FileCost', None, 900),
-('CostInitialize', None, 800),
-('CostFinalize', None, 1000),
-('ExecuteAction', None, 1300),
-('ExitDialog', None, -1),
-('FatalError', None, -3),
-('UserExit', None, -2),
-]
-
-AdvtExecuteSequence = [
-('InstallInitialize', None, 1500),
-('InstallFinalize', None, 6600),
-('CostInitialize', None, 800),
-('CostFinalize', None, 1000),
-('InstallValidate', None, 1400),
-('CreateShortcuts', None, 4500),
-('MsiPublishAssemblies', None, 6250),
-('PublishComponents', None, 6200),
-('PublishFeatures', None, 6300),
-('PublishProduct', None, 6400),
-('RegisterClassInfo', None, 4600),
-('RegisterExtensionInfo', None, 4700),
-('RegisterMIMEInfo', None, 4900),
-('RegisterProgIdInfo', None, 4800),
-]
-
-InstallExecuteSequence = [
-('InstallInitialize', None, 1500),
-('InstallFinalize', None, 6600),
-('InstallFiles', None, 4000),
-('FileCost', None, 900),
-('CostInitialize', None, 800),
-('CostFinalize', None, 1000),
-('InstallValidate', None, 1400),
-('CreateShortcuts', None, 4500),
-('MsiPublishAssemblies', None, 6250),
-('PublishComponents', None, 6200),
-('PublishFeatures', None, 6300),
-('PublishProduct', None, 6400),
-('RegisterClassInfo', None, 4600),
-('RegisterExtensionInfo', None, 4700),
-('RegisterMIMEInfo', None, 4900),
-('RegisterProgIdInfo', None, 4800),
-('AllocateRegistrySpace', 'NOT Installed', 1550),
-('AppSearch', None, 400),
-('BindImage', None, 4300),
-('CCPSearch', 'NOT Installed', 500),
-('CreateFolders', None, 3700),
-('DeleteServices', 'VersionNT', 2000),
-('DuplicateFiles', None, 4210),
-('FindRelatedProducts', None, 200),
-('InstallODBC', None, 5400),
-('InstallServices', 'VersionNT', 5800),
-('IsolateComponents', None, 950),
-('LaunchConditions', None, 100),
-('MigrateFeatureStates', None, 1200),
-('MoveFiles', None, 3800),
-('PatchFiles', None, 4090),
-('ProcessComponents', None, 1600),
-('RegisterComPlus', None, 5700),
-('RegisterFonts', None, 5300),
-('RegisterProduct', None, 6100),
-('RegisterTypeLibraries', None, 5500),
-('RegisterUser', None, 6000),
-('RemoveDuplicateFiles', None, 3400),
-('RemoveEnvironmentStrings', None, 3300),
-('RemoveExistingProducts', None, 6700),
-('RemoveFiles', None, 3500),
-('RemoveFolders', None, 3600),
-('RemoveIniValues', None, 3100),
-('RemoveODBC', None, 2400),
-('RemoveRegistryValues', None, 2600),
-('RemoveShortcuts', None, 3200),
-('RMCCPSearch', 'NOT Installed', 600),
-('SelfRegModules', None, 5600),
-('SelfUnregModules', None, 2200),
-('SetODBCFolders', None, 1100),
-('StartServices', 'VersionNT', 5900),
-('StopServices', 'VersionNT', 1900),
-('MsiUnpublishAssemblies', None, 1750),
-('UnpublishComponents', None, 1700),
-('UnpublishFeatures', None, 1800),
-('UnregisterClassInfo', None, 2700),
-('UnregisterComPlus', None, 2100),
-('UnregisterExtensionInfo', None, 2800),
-('UnregisterFonts', None, 2500),
-('UnregisterMIMEInfo', None, 3000),
-('UnregisterProgIdInfo', None, 2900),
-('UnregisterTypeLibraries', None, 2300),
-('ValidateProductID', None, 700),
-('WriteEnvironmentStrings', None, 5200),
-('WriteIniValues', None, 5100),
-('WriteRegistryValues', None, 5000),
-]
-
-InstallUISequence = [
-('FileCost', None, 900),
-('CostInitialize', None, 800),
-('CostFinalize', None, 1000),
-('ExecuteAction', None, 1300),
-('ExitDialog', None, -1),
-('FatalError', None, -3),
-('UserExit', None, -2),
-('AppSearch', None, 400),
-('CCPSearch', 'NOT Installed', 500),
-('FindRelatedProducts', None, 200),
-('IsolateComponents', None, 950),
-('LaunchConditions', None, 100),
-('MigrateFeatureStates', None, 1200),
-('RMCCPSearch', 'NOT Installed', 600),
-('ValidateProductID', None, 700),
-]
-
-tables=['AdminExecuteSequence', 'AdminUISequence', 'AdvtExecuteSequence', 'InstallExecuteSequence', 'InstallUISequence']
diff --git a/Lib/msilib/text.py b/Lib/msilib/text.py
deleted file mode 100644
index c4b9e8697d728d..00000000000000
--- a/Lib/msilib/text.py
+++ /dev/null
@@ -1,129 +0,0 @@
-import msilib,os;dirname=os.path.dirname(__file__)
-
-ActionText = [
-('InstallValidate', 'Validating install', None),
-('InstallFiles', 'Copying new files', 'File: [1],  Directory: [9],  Size: [6]'),
-('InstallAdminPackage', 'Copying network install files', 'File: [1], Directory: [9], Size: [6]'),
-('FileCost', 'Computing space requirements', None),
-('CostInitialize', 'Computing space requirements', None),
-('CostFinalize', 'Computing space requirements', None),
-('CreateShortcuts', 'Creating shortcuts', 'Shortcut: [1]'),
-('PublishComponents', 'Publishing Qualified Components', 'Component ID: [1], Qualifier: [2]'),
-('PublishFeatures', 'Publishing Product Features', 'Feature: [1]'),
-('PublishProduct', 'Publishing product information', None),
-('RegisterClassInfo', 'Registering Class servers', 'Class Id: [1]'),
-('RegisterExtensionInfo', 'Registering extension servers', 'Extension: [1]'),
-('RegisterMIMEInfo', 'Registering MIME info', 'MIME Content Type: [1], Extension: [2]'),
-('RegisterProgIdInfo', 'Registering program identifiers', 'ProgId: [1]'),
-('AllocateRegistrySpace', 'Allocating registry space', 'Free space: [1]'),
-('AppSearch', 'Searching for installed applications', 'Property: [1], Signature: [2]'),
-('BindImage', 'Binding executables', 'File: [1]'),
-('CCPSearch', 'Searching for qualifying products', None),
-('CreateFolders', 'Creating folders', 'Folder: [1]'),
-('DeleteServices', 'Deleting services', 'Service: [1]'),
-('DuplicateFiles', 'Creating duplicate files', 'File: [1],  Directory: [9],  Size: [6]'),
-('FindRelatedProducts', 'Searching for related applications', 'Found application: [1]'),
-('InstallODBC', 'Installing ODBC components', None),
-('InstallServices', 'Installing new services', 'Service: [2]'),
-('LaunchConditions', 'Evaluating launch conditions', None),
-('MigrateFeatureStates', 'Migrating feature states from related applications', 'Application: [1]'),
-('MoveFiles', 'Moving files', 'File: [1],  Directory: [9],  Size: [6]'),
-('PatchFiles', 'Patching files', 'File: [1],  Directory: [2],  Size: [3]'),
-('ProcessComponents', 'Updating component registration', None),
-('RegisterComPlus', 'Registering COM+ Applications and Components', 'AppId: [1]{{, AppType: [2], Users: [3], RSN: [4]}}'),
-('RegisterFonts', 'Registering fonts', 'Font: [1]'),
-('RegisterProduct', 'Registering product', '[1]'),
-('RegisterTypeLibraries', 'Registering type libraries', 'LibID: [1]'),
-('RegisterUser', 'Registering user', '[1]'),
-('RemoveDuplicateFiles', 'Removing duplicated files', 'File: [1], Directory: [9]'),
-('RemoveEnvironmentStrings', 'Updating environment strings', 'Name: [1], Value: [2], Action [3]'),
-('RemoveExistingProducts', 'Removing applications', 'Application: [1], Command line: [2]'),
-('RemoveFiles', 'Removing files', 'File: [1], Directory: [9]'),
-('RemoveFolders', 'Removing folders', 'Folder: [1]'),
-('RemoveIniValues', 'Removing INI files entries', 'File: [1],  Section: [2],  Key: [3], Value: [4]'),
-('RemoveODBC', 'Removing ODBC components', None),
-('RemoveRegistryValues', 'Removing system registry values', 'Key: [1], Name: [2]'),
-('RemoveShortcuts', 'Removing shortcuts', 'Shortcut: [1]'),
-('RMCCPSearch', 'Searching for qualifying products', None),
-('SelfRegModules', 'Registering modules', 'File: [1], Folder: [2]'),
-('SelfUnregModules', 'Unregistering modules', 'File: [1], Folder: [2]'),
-('SetODBCFolders', 'Initializing ODBC directories', None),
-('StartServices', 'Starting services', 'Service: [1]'),
-('StopServices', 'Stopping services', 'Service: [1]'),
-('UnpublishComponents', 'Unpublishing Qualified Components', 'Component ID: [1], Qualifier: [2]'),
-('UnpublishFeatures', 'Unpublishing Product Features', 'Feature: [1]'),
-('UnregisterClassInfo', 'Unregister Class servers', 'Class Id: [1]'),
-('UnregisterComPlus', 'Unregistering COM+ Applications and Components', 'AppId: [1]{{, AppType: [2]}}'),
-('UnregisterExtensionInfo', 'Unregistering extension servers', 'Extension: [1]'),
-('UnregisterFonts', 'Unregistering fonts', 'Font: [1]'),
-('UnregisterMIMEInfo', 'Unregistering MIME info', 'MIME Content Type: [1], Extension: [2]'),
-('UnregisterProgIdInfo', 'Unregistering program identifiers', 'ProgId: [1]'),
-('UnregisterTypeLibraries', 'Unregistering type libraries', 'LibID: [1]'),
-('WriteEnvironmentStrings', 'Updating environment strings', 'Name: [1], Value: [2], Action [3]'),
-('WriteIniValues', 'Writing INI files values', 'File: [1],  Section: [2],  Key: [3], Value: [4]'),
-('WriteRegistryValues', 'Writing system registry values', 'Key: [1], Name: [2], Value: [3]'),
-('Advertise', 'Advertising application', None),
-('GenerateScript', 'Generating script operations for action:', '[1]'),
-('InstallSFPCatalogFile', 'Installing system catalog', 'File: [1],  Dependencies: [2]'),
-('MsiPublishAssemblies', 'Publishing assembly information', 'Application Context:[1], Assembly Name:[2]'),
-('MsiUnpublishAssemblies', 'Unpublishing assembly information', 'Application Context:[1], Assembly Name:[2]'),
-('Rollback', 'Rolling back action:', '[1]'),
-('RollbackCleanup', 'Removing backup files', 'File: [1]'),
-('UnmoveFiles', 'Removing moved files', 'File: [1], Directory: [9]'),
-('UnpublishProduct', 'Unpublishing product information', None),
-]
-
-UIText = [
-('AbsentPath', None),
-('bytes', 'bytes'),
-('GB', 'GB'),
-('KB', 'KB'),
-('MB', 'MB'),
-('MenuAbsent', 'Entire feature will be unavailable'),
-('MenuAdvertise', 'Feature will be installed when required'),
-('MenuAllCD', 'Entire feature will be installed to run from CD'),
-('MenuAllLocal', 'Entire feature will be installed on local hard drive'),
-('MenuAllNetwork', 'Entire feature will be installed to run from network'),
-('MenuCD', 'Will be installed to run from CD'),
-('MenuLocal', 'Will be installed on local hard drive'),
-('MenuNetwork', 'Will be installed to run from network'),
-('ScriptInProgress', 'Gathering required information...'),
-('SelAbsentAbsent', 'This feature will remain uninstalled'),
-('SelAbsentAdvertise', 'This feature will be set to be installed when required'),
-('SelAbsentCD', 'This feature will be installed to run from CD'),
-('SelAbsentLocal', 'This feature will be installed on the local hard drive'),
-('SelAbsentNetwork', 'This feature will be installed to run from the network'),
-('SelAdvertiseAbsent', 'This feature will become unavailable'),
-('SelAdvertiseAdvertise', 'Will be installed when required'),
-('SelAdvertiseCD', 'This feature will be available to run from CD'),
-('SelAdvertiseLocal', 'This feature will be installed on your local hard drive'),
-('SelAdvertiseNetwork', 'This feature will be available to run from the network'),
-('SelCDAbsent', "This feature will be uninstalled completely, you won't be able to run it from CD"),
-('SelCDAdvertise', 'This feature will change from run from CD state to set to be installed when required'),
-('SelCDCD', 'This feature will remain to be run from CD'),
-('SelCDLocal', 'This feature will change from run from CD state to be installed on the local hard drive'),
-('SelChildCostNeg', 'This feature frees up [1] on your hard drive.'),
-('SelChildCostPos', 'This feature requires [1] on your hard drive.'),
-('SelCostPending', 'Compiling cost for this feature...'),
-('SelLocalAbsent', 'This feature will be completely removed'),
-('SelLocalAdvertise', 'This feature will be removed from your local hard drive, but will be set to be installed when required'),
-('SelLocalCD', 'This feature will be removed from your local hard drive, but will be still available to run from CD'),
-('SelLocalLocal', 'This feature will remain on you local hard drive'),
-('SelLocalNetwork', 'This feature will be removed from your local hard drive, but will be still available to run from the network'),
-('SelNetworkAbsent', "This feature will be uninstalled completely, you won't be able to run it from the network"),
-('SelNetworkAdvertise', 'This feature will change from run from network state to set to be installed when required'),
-('SelNetworkLocal', 'This feature will change from run from network state to be installed on the local hard drive'),
-('SelNetworkNetwork', 'This feature will remain to be run from the network'),
-('SelParentCostNegNeg', 'This feature frees up [1] on your hard drive. It has [2] of [3] subfeatures selected. The subfeatures free up [4] on your hard drive.'),
-('SelParentCostNegPos', 'This feature frees up [1] on your hard drive. It has [2] of [3] subfeatures selected. The subfeatures require [4] on your hard drive.'),
-('SelParentCostPosNeg', 'This feature requires [1] on your hard drive. It has [2] of [3] subfeatures selected. The subfeatures free up [4] on your hard drive.'),
-('SelParentCostPosPos', 'This feature requires [1] on your hard drive. It has [2] of [3] subfeatures selected. The subfeatures require [4] on your hard drive.'),
-('TimeRemaining', 'Time remaining: {[1] minutes }{[2] seconds}'),
-('VolumeCostAvailable', 'Available'),
-('VolumeCostDifference', 'Difference'),
-('VolumeCostRequired', 'Required'),
-('VolumeCostSize', 'Disk Size'),
-('VolumeCostVolume', 'Volume'),
-]
-
-tables=['ActionText', 'UIText']
diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
index 1a8822b9db012d..dbbf106f680964 100644
--- a/Lib/multiprocessing/connection.py
+++ b/Lib/multiprocessing/connection.py
@@ -9,6 +9,7 @@
 
 __all__ = [ 'Client', 'Listener', 'Pipe', 'wait' ]
 
+import errno
 import io
 import os
 import sys
@@ -271,12 +272,22 @@ class PipeConnection(_ConnectionBase):
         with FILE_FLAG_OVERLAPPED.
         """
         _got_empty_message = False
+        _send_ov = None
 
         def _close(self, _CloseHandle=_winapi.CloseHandle):
+            ov = self._send_ov
+            if ov is not None:
+                # Interrupt WaitForMultipleObjects() in _send_bytes()
+                ov.cancel()
             _CloseHandle(self._handle)
 
         def _send_bytes(self, buf):
+            if self._send_ov is not None:
+                # A connection should only be used by a single thread
+                raise ValueError("concurrent send_bytes() calls "
+                                 "are not supported")
             ov, err = _winapi.WriteFile(self._handle, buf, overlapped=True)
+            self._send_ov = ov
             try:
                 if err == _winapi.ERROR_IO_PENDING:
                     waitres = _winapi.WaitForMultipleObjects(
@@ -286,7 +297,13 @@ def _send_bytes(self, buf):
                 ov.cancel()
                 raise
             finally:
+                self._send_ov = None
                 nwritten, err = ov.GetOverlappedResult(True)
+            if err == _winapi.ERROR_OPERATION_ABORTED:
+                # close() was called by another thread while
+                # WaitForMultipleObjects() was waiting for the overlapped
+                # operation.
+                raise OSError(errno.EPIPE, "handle is closed")
             assert err == 0
             assert nwritten == len(buf)
 
@@ -722,11 +739,11 @@ def PipeClient(address):
 # Authentication stuff
 #
 
-MESSAGE_LENGTH = 20
+MESSAGE_LENGTH = 40  # MUST be > 20
 
-CHALLENGE = b'#CHALLENGE#'
-WELCOME = b'#WELCOME#'
-FAILURE = b'#FAILURE#'
+_CHALLENGE = b'#CHALLENGE#'
+_WELCOME = b'#WELCOME#'
+_FAILURE = b'#FAILURE#'
 
 # multiprocessing.connection Authentication Handshake Protocol Description
 # (as documented for reference after reading the existing code)
@@ -750,7 +767,12 @@ def PipeClient(address):
 #     ------------------------------  ---------------------------------------
 # 0.                                  Open a connection on the pipe.
 # 1.  Accept connection.
-# 2.  New random 20 bytes -> MESSAGE
+# 2.  Random 20+ bytes -> MESSAGE
+#     Modern servers always send
+#     more than 20 bytes and include
+#     a {digest} prefix on it with
+#     their preferred HMAC digest.
+#     Legacy ones send ==20 bytes.
 # 3.  send 4 byte length (net order)
 #     prefix followed by:
 #       b'#CHALLENGE#' + MESSAGE
@@ -763,14 +785,32 @@ def PipeClient(address):
 # 6.                                  Assert that M1 starts with:
 #                                       b'#CHALLENGE#'
 # 7.                                  Strip that prefix from M1 into -> M2
-# 8.                                  Compute HMAC-MD5 of AUTHKEY, M2 -> C_DIGEST
+# 7.1.                                Parse M2: if it is exactly 20 bytes in
+#                                     length this indicates a legacy server
+#                                     supporting only HMAC-MD5. Otherwise the
+# 7.2.                                preferred digest is looked up from an
+#                                     expected "{digest}" prefix on M2. No prefix
+#                                     or unsupported digest? <- AuthenticationError
+# 7.3.                                Put divined algorithm name in -> D_NAME
+# 8.                                  Compute HMAC-D_NAME of AUTHKEY, M2 -> C_DIGEST
 # 9.                                  Send 4 byte length prefix (net order)
 #                                     followed by C_DIGEST bytes.
-# 10. Compute HMAC-MD5 of AUTHKEY,
-#     MESSAGE into -> M_DIGEST.
-# 11. Receive 4 or 4+8 byte length
+# 10. Receive 4 or 4+8 byte length
 #     prefix (#4 dance) -> SIZE.
-# 12. Receive min(SIZE, 256) -> C_D.
+# 11. Receive min(SIZE, 256) -> C_D.
+# 11.1. Parse C_D: legacy servers
+#     accept it as is, "md5" -> D_NAME
+# 11.2. modern servers check the length
+#     of C_D, IF it is 16 bytes?
+# 11.2.1. "md5" -> D_NAME
+#         and skip to step 12.
+# 11.3. longer? expect and parse a "{digest}"
+#     prefix into -> D_NAME.
+#     Strip the prefix and store remaining
+#     bytes in -> C_D.
+# 11.4. Don't like D_NAME? <- AuthenticationError
+# 12. Compute HMAC-D_NAME of AUTHKEY,
+#     MESSAGE into -> M_DIGEST.
 # 13. Compare M_DIGEST == C_D:
 # 14a: Match? Send length prefix &
 #       b'#WELCOME#'
@@ -787,42 +827,139 @@ def PipeClient(address):
 #
 # If this RETURNed, the connection remains open: it has been authenticated.
 #
-# Length prefixes are used consistently even though every step so far has
-# always been a singular specific fixed length.  This may help us evolve
-# the protocol in the future without breaking backwards compatibility.
-#
-# Similarly the initial challenge message from the serving side has always
-# been 20 bytes, but clients can accept a 100+ so using the length of the
-# opening challenge message as an indicator of protocol version may work.
+# Length prefixes are used consistently. Even on the legacy protocol, this
+# was good fortune and allowed us to evolve the protocol by using the length
+# of the opening challenge or length of the returned digest as a signal as
+# to which protocol the other end supports.
+
+_ALLOWED_DIGESTS = frozenset(
+        {b'md5', b'sha256', b'sha384', b'sha3_256', b'sha3_384'})
+_MAX_DIGEST_LEN = max(len(_) for _ in _ALLOWED_DIGESTS)
+
+# Old hmac-md5 only server versions from Python <=3.11 sent a message of this
+# length. It happens to not match the length of any supported digest so we can
+# use a message of this length to indicate that we should work in backwards
+# compatible md5-only mode without a {digest_name} prefix on our response.
+_MD5ONLY_MESSAGE_LENGTH = 20
+_MD5_DIGEST_LEN = 16
+_LEGACY_LENGTHS = (_MD5ONLY_MESSAGE_LENGTH, _MD5_DIGEST_LEN)
+
+
+def _get_digest_name_and_payload(message: bytes) -> (str, bytes):
+    """Returns a digest name and the payload for a response hash.
+
+    If a legacy protocol is detected based on the message length
+    or contents the digest name returned will be empty to indicate
+    legacy mode where MD5 and no digest prefix should be sent.
+    """
+    # modern message format: b"{digest}payload" longer than 20 bytes
+    # legacy message format: 16 or 20 byte b"payload"
+    if len(message) in _LEGACY_LENGTHS:
+        # Either this was a legacy server challenge, or we're processing
+        # a reply from a legacy client that sent an unprefixed 16-byte
+        # HMAC-MD5 response. All messages using the modern protocol will
+        # be longer than either of these lengths.
+        return '', message
+    if (message.startswith(b'{') and
+        (curly := message.find(b'}', 1, _MAX_DIGEST_LEN+2)) > 0):
+        digest = message[1:curly]
+        if digest in _ALLOWED_DIGESTS:
+            payload = message[curly+1:]
+            return digest.decode('ascii'), payload
+    raise AuthenticationError(
+            'unsupported message length, missing digest prefix, '
+            f'or unsupported digest: {message=}')
+
+
+def _create_response(authkey, message):
+    """Create a MAC based on authkey and message
+
+    The MAC algorithm defaults to HMAC-MD5, unless MD5 is not available or
+    the message has a '{digest_name}' prefix. For legacy HMAC-MD5, the response
+    is the raw MAC, otherwise the response is prefixed with '{digest_name}',
+    e.g. b'{sha256}abcdefg...'
+
+    Note: The MAC protects the entire message including the digest_name prefix.
+    """
+    import hmac
+    digest_name = _get_digest_name_and_payload(message)[0]
+    # The MAC protects the entire message: digest header and payload.
+    if not digest_name:
+        # Legacy server without a {digest} prefix on message.
+        # Generate a legacy non-prefixed HMAC-MD5 reply.
+        try:
+            return hmac.new(authkey, message, 'md5').digest()
+        except ValueError:
+            # HMAC-MD5 is not available (FIPS mode?), fall back to
+            # HMAC-SHA2-256 modern protocol. The legacy server probably
+            # doesn't support it and will reject us anyways. :shrug:
+            digest_name = 'sha256'
+    # Modern protocol, indicate the digest used in the reply.
+    response = hmac.new(authkey, message, digest_name).digest()
+    return b'{%s}%s' % (digest_name.encode('ascii'), response)
+
+
+def _verify_challenge(authkey, message, response):
+    """Verify MAC challenge
+
+    If our message did not include a digest_name prefix, the client is allowed
+    to select a stronger digest_name from _ALLOWED_DIGESTS.
+
+    In case our message is prefixed, a client cannot downgrade to a weaker
+    algorithm, because the MAC is calculated over the entire message
+    including the '{digest_name}' prefix.
+    """
+    import hmac
+    response_digest, response_mac = _get_digest_name_and_payload(response)
+    response_digest = response_digest or 'md5'
+    try:
+        expected = hmac.new(authkey, message, response_digest).digest()
+    except ValueError:
+        raise AuthenticationError(f'{response_digest=} unsupported')
+    if len(expected) != len(response_mac):
+        raise AuthenticationError(
+                f'expected {response_digest!r} of length {len(expected)} '
+                f'got {len(response_mac)}')
+    if not hmac.compare_digest(expected, response_mac):
+        raise AuthenticationError('digest received was wrong')
 
 
-def deliver_challenge(connection, authkey):
-    import hmac
+def deliver_challenge(connection, authkey: bytes, digest_name='sha256'):
     if not isinstance(authkey, bytes):
         raise ValueError(
             "Authkey must be bytes, not {0!s}".format(type(authkey)))
+    assert MESSAGE_LENGTH > _MD5ONLY_MESSAGE_LENGTH, "protocol constraint"
     message = os.urandom(MESSAGE_LENGTH)
-    connection.send_bytes(CHALLENGE + message)
-    digest = hmac.new(authkey, message, 'md5').digest()
+    message = b'{%s}%s' % (digest_name.encode('ascii'), message)
+    # Even when sending a challenge to a legacy client that does not support
+    # digest prefixes, they'll take the entire thing as a challenge and
+    # respond to it with a raw HMAC-MD5.
+    connection.send_bytes(_CHALLENGE + message)
     response = connection.recv_bytes(256)        # reject large message
-    if response == digest:
-        connection.send_bytes(WELCOME)
+    try:
+        _verify_challenge(authkey, message, response)
+    except AuthenticationError:
+        connection.send_bytes(_FAILURE)
+        raise
     else:
-        connection.send_bytes(FAILURE)
-        raise AuthenticationError('digest received was wrong')
+        connection.send_bytes(_WELCOME)
 
-def answer_challenge(connection, authkey):
-    import hmac
+
+def answer_challenge(connection, authkey: bytes):
     if not isinstance(authkey, bytes):
         raise ValueError(
             "Authkey must be bytes, not {0!s}".format(type(authkey)))
     message = connection.recv_bytes(256)         # reject large message
-    assert message[:len(CHALLENGE)] == CHALLENGE, 'message = %r' % message
-    message = message[len(CHALLENGE):]
-    digest = hmac.new(authkey, message, 'md5').digest()
+    if not message.startswith(_CHALLENGE):
+        raise AuthenticationError(
+                f'Protocol error, expected challenge: {message=}')
+    message = message[len(_CHALLENGE):]
+    if len(message) < _MD5ONLY_MESSAGE_LENGTH:
+        raise AuthenticationError('challenge too short: {len(message)} bytes')
+    digest = _create_response(authkey, message)
     connection.send_bytes(digest)
     response = connection.recv_bytes(256)        # reject large message
-    if response != WELCOME:
+    if response != _WELCOME:
         raise AuthenticationError('digest sent was rejected')
 
 #
diff --git a/Lib/multiprocessing/forkserver.py b/Lib/multiprocessing/forkserver.py
index 22a911a7a29cdc..4642707dae2f4e 100644
--- a/Lib/multiprocessing/forkserver.py
+++ b/Lib/multiprocessing/forkserver.py
@@ -61,7 +61,7 @@ def _stop_unlocked(self):
 
     def set_forkserver_preload(self, modules_names):
         '''Set list of module names to try to load in forkserver process.'''
-        if not all(type(mod) is str for mod in self._preload_modules):
+        if not all(type(mod) is str for mod in modules_names):
             raise TypeError('module_names must be a list of strings')
         self._preload_modules = modules_names
 
diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index b6534939b4d98b..96cebc6eabec89 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -90,7 +90,10 @@ def dispatch(c, id, methodname, args=(), kwds={}):
     kind, result = c.recv()
     if kind == '#RETURN':
         return result
-    raise convert_to_error(kind, result)
+    try:
+        raise convert_to_error(kind, result)
+    finally:
+        del result  # break reference cycle
 
 def convert_to_error(kind, result):
     if kind == '#ERROR':
@@ -833,7 +836,10 @@ def _callmethod(self, methodname, args=(), kwds={}):
             conn = self._Client(token.address, authkey=self._authkey)
             dispatch(conn, None, 'decref', (token.id,))
             return proxy
-        raise convert_to_error(kind, result)
+        try:
+            raise convert_to_error(kind, result)
+        finally:
+            del result   # break reference cycle
 
     def _getvalue(self):
         '''
@@ -1159,15 +1165,19 @@ def __imul__(self, value):
         self._callmethod('__imul__', (value,))
         return self
 
+    __class_getitem__ = classmethod(types.GenericAlias)
+
 
-DictProxy = MakeProxyType('DictProxy', (
+_BaseDictProxy = MakeProxyType('DictProxy', (
     '__contains__', '__delitem__', '__getitem__', '__iter__', '__len__',
     '__setitem__', 'clear', 'copy', 'get', 'items',
     'keys', 'pop', 'popitem', 'setdefault', 'update', 'values'
     ))
-DictProxy._method_to_typeid_ = {
+_BaseDictProxy._method_to_typeid_ = {
     '__iter__': 'Iterator',
     }
+class DictProxy(_BaseDictProxy):
+    __class_getitem__ = classmethod(types.GenericAlias)
 
 
 ArrayProxy = MakeProxyType('ArrayProxy', (
diff --git a/Lib/multiprocessing/pool.py b/Lib/multiprocessing/pool.py
index 4f5d88cb975cb7..f979890170b1a1 100644
--- a/Lib/multiprocessing/pool.py
+++ b/Lib/multiprocessing/pool.py
@@ -200,7 +200,7 @@ def __init__(self, processes=None, initializer=None, initargs=(),
         self._initargs = initargs
 
         if processes is None:
-            processes = os.cpu_count() or 1
+            processes = os.process_cpu_count() or 1
         if processes < 1:
             raise ValueError("Number of processes must be at least 1")
         if maxtasksperchild is not None:
diff --git a/Lib/multiprocessing/popen_spawn_win32.py b/Lib/multiprocessing/popen_spawn_win32.py
index 4d60ffc030bea6..af044305709e56 100644
--- a/Lib/multiprocessing/popen_spawn_win32.py
+++ b/Lib/multiprocessing/popen_spawn_win32.py
@@ -14,6 +14,7 @@
 #
 #
 
+# Exit code used by Popen.terminate()
 TERMINATE = 0x10000
 WINEXE = (sys.platform == 'win32' and getattr(sys, 'frozen', False))
 WINSERVICE = sys.executable.lower().endswith("pythonservice.exe")
@@ -122,9 +123,15 @@ def terminate(self):
         if self.returncode is None:
             try:
                 _winapi.TerminateProcess(int(self._handle), TERMINATE)
-            except OSError:
-                if self.wait(timeout=1.0) is None:
+            except PermissionError:
+                # ERROR_ACCESS_DENIED (winerror 5) is received when the
+                # process already died.
+                code = _winapi.GetExitCodeProcess(int(self._handle))
+                if code == _winapi.STILL_ACTIVE:
                     raise
+                self.returncode = code
+            else:
+                self.returncode = -signal.SIGTERM
 
     kill = terminate
 
diff --git a/Lib/multiprocessing/process.py b/Lib/multiprocessing/process.py
index c03c859baa795b..271ba3fd325138 100644
--- a/Lib/multiprocessing/process.py
+++ b/Lib/multiprocessing/process.py
@@ -61,7 +61,7 @@ def parent_process():
 def _cleanup():
     # check for processes which have finished
     for p in list(_children):
-        if p._popen.poll() is not None:
+        if (child_popen := p._popen) and child_popen.poll() is not None:
             _children.discard(p)
 
 #
diff --git a/Lib/multiprocessing/queues.py b/Lib/multiprocessing/queues.py
index daf9ee94a19431..852ae87b276861 100644
--- a/Lib/multiprocessing/queues.py
+++ b/Lib/multiprocessing/queues.py
@@ -158,6 +158,20 @@ def cancel_join_thread(self):
         except AttributeError:
             pass
 
+    def _terminate_broken(self):
+        # Close a Queue on error.
+
+        # gh-94777: Prevent queue writing to a pipe which is no longer read.
+        self._reader.close()
+
+        # gh-107219: Close the connection writer which can unblock
+        # Queue._feed() if it was stuck in send_bytes().
+        if sys.platform == 'win32':
+            self._writer.close()
+
+        self.close()
+        self.join_thread()
+
     def _start_thread(self):
         debug('Queue._start_thread()')
 
@@ -169,13 +183,19 @@ def _start_thread(self):
                   self._wlock, self._reader.close, self._writer.close,
                   self._ignore_epipe, self._on_queue_feeder_error,
                   self._sem),
-            name='QueueFeederThread'
+            name='QueueFeederThread',
+            daemon=True,
         )
-        self._thread.daemon = True
 
-        debug('doing self._thread.start()')
-        self._thread.start()
-        debug('... done self._thread.start()')
+        try:
+            debug('doing self._thread.start()')
+            self._thread.start()
+            debug('... done self._thread.start()')
+        except:
+            # gh-109047: During Python finalization, creating a thread
+            # can fail with RuntimeError.
+            self._thread = None
+            raise
 
         if not self._joincancelled:
             self._jointhread = Finalize(
diff --git a/Lib/multiprocessing/resource_tracker.py b/Lib/multiprocessing/resource_tracker.py
index ea369507297f86..8e41f461cc934e 100644
--- a/Lib/multiprocessing/resource_tracker.py
+++ b/Lib/multiprocessing/resource_tracker.py
@@ -51,15 +51,31 @@
     })
 
 
+class ReentrantCallError(RuntimeError):
+    pass
+
+
 class ResourceTracker(object):
 
     def __init__(self):
-        self._lock = threading.Lock()
+        self._lock = threading.RLock()
         self._fd = None
         self._pid = None
 
+    def _reentrant_call_error(self):
+        # gh-109629: this happens if an explicit call to the ResourceTracker
+        # gets interrupted by a garbage collection, invoking a finalizer (*)
+        # that itself calls back into ResourceTracker.
+        #   (*) for example the SemLock finalizer
+        raise ReentrantCallError(
+            "Reentrant call into the multiprocessing resource tracker")
+
     def _stop(self):
         with self._lock:
+            # This should not happen (_stop() isn't called by a finalizer)
+            # but we check for it anyway.
+            if self._lock._recursion_count() > 1:
+                return self._reentrant_call_error()
             if self._fd is None:
                 # not running
                 return
@@ -81,6 +97,9 @@ def ensure_running(self):
         This can be run from any process.  Usually a child process will use
         the resource created by its parent.'''
         with self._lock:
+            if self._lock._recursion_count() > 1:
+                # The code below is certainly not reentrant-safe, so bail out
+                return self._reentrant_call_error()
             if self._fd is not None:
                 # resource tracker was launched before, is it still running?
                 if self._check_alive():
@@ -159,7 +178,17 @@ def unregister(self, name, rtype):
         self._send('UNREGISTER', name, rtype)
 
     def _send(self, cmd, name, rtype):
-        self.ensure_running()
+        try:
+            self.ensure_running()
+        except ReentrantCallError:
+            # The code below might or might not work, depending on whether
+            # the resource tracker was already running and still alive.
+            # Better warn the user.
+            # (XXX is warnings.warn itself reentrant-safe? :-)
+            warnings.warn(
+                f"ResourceTracker called reentrantly for resource cleanup, "
+                f"which is unsupported. "
+                f"The {rtype} object {name!r} might leak.")
         msg = '{0}:{1}:{2}\n'.format(cmd, name, rtype).encode('ascii')
         if len(msg) > 512:
             # posix guarantees that writes to a pipe of less than PIPE_BUF
@@ -176,6 +205,7 @@ def _send(self, cmd, name, rtype):
 unregister = _resource_tracker.unregister
 getfd = _resource_tracker.getfd
 
+
 def main(fd):
     '''Run resource tracker.'''
     # protect the process from ^C and "killall python" etc
@@ -221,9 +251,10 @@ def main(fd):
         for rtype, rtype_cache in cache.items():
             if rtype_cache:
                 try:
-                    warnings.warn('resource_tracker: There appear to be %d '
-                                  'leaked %s objects to clean up at shutdown' %
-                                  (len(rtype_cache), rtype))
+                    warnings.warn(
+                        f'resource_tracker: There appear to be {len(rtype_cache)} '
+                        f'leaked {rtype} objects to clean up at shutdown: {rtype_cache}'
+                    )
                 except Exception:
                     pass
             for name in rtype_cache:
diff --git a/Lib/multiprocessing/shared_memory.py b/Lib/multiprocessing/shared_memory.py
index 9a1e5aa17b87a2..67e70fdc27cf31 100644
--- a/Lib/multiprocessing/shared_memory.py
+++ b/Lib/multiprocessing/shared_memory.py
@@ -71,8 +71,9 @@ class SharedMemory:
     _flags = os.O_RDWR
     _mode = 0o600
     _prepend_leading_slash = True if _USE_POSIX else False
+    _track = True
 
-    def __init__(self, name=None, create=False, size=0):
+    def __init__(self, name=None, create=False, size=0, *, track=True):
         if not size >= 0:
             raise ValueError("'size' must be a positive integer")
         if create:
@@ -82,6 +83,7 @@ def __init__(self, name=None, create=False, size=0):
         if name is None and not self._flags & os.O_EXCL:
             raise ValueError("'name' can only be None if create=True")
 
+        self._track = track
         if _USE_POSIX:
 
             # POSIX Shared Memory
@@ -116,8 +118,8 @@ def __init__(self, name=None, create=False, size=0):
             except OSError:
                 self.unlink()
                 raise
-
-            resource_tracker.register(self._name, "shared_memory")
+            if self._track:
+                resource_tracker.register(self._name, "shared_memory")
 
         else:
 
@@ -236,12 +238,20 @@ def close(self):
     def unlink(self):
         """Requests that the underlying shared memory block be destroyed.
 
-        In order to ensure proper cleanup of resources, unlink should be
-        called once (and only once) across all processes which have access
-        to the shared memory block."""
+        Unlink should be called once (and only once) across all handles
+        which have access to the shared memory block, even if these
+        handles belong to different processes. Closing and unlinking may
+        happen in any order, but trying to access data inside a shared
+        memory block after unlinking may result in memory errors,
+        depending on platform.
+
+        This method has no effect on Windows, where the only way to
+        delete a shared memory block is to close all handles."""
+
         if _USE_POSIX and self._name:
             _posixshmem.shm_unlink(self._name)
-            resource_tracker.unregister(self._name, "shared_memory")
+            if self._track:
+                resource_tracker.unregister(self._name, "shared_memory")
 
 
 _encoding = "utf8"
diff --git a/Lib/multiprocessing/spawn.py b/Lib/multiprocessing/spawn.py
index 09f8a229d7cccb..daac1ecc34b55e 100644
--- a/Lib/multiprocessing/spawn.py
+++ b/Lib/multiprocessing/spawn.py
@@ -31,11 +31,13 @@
     WINSERVICE = False
 else:
     WINEXE = getattr(sys, 'frozen', False)
-    WINSERVICE = sys.executable.lower().endswith("pythonservice.exe")
+    WINSERVICE = sys.executable and sys.executable.lower().endswith("pythonservice.exe")
 
 def set_executable(exe):
     global _python_exe
-    if sys.platform == 'win32':
+    if exe is None:
+        _python_exe = exe
+    elif sys.platform == 'win32':
         _python_exe = os.fsdecode(exe)
     else:
         _python_exe = os.fsencode(exe)
@@ -148,7 +150,11 @@ def _check_not_importing_main():
                 ...
 
         The "freeze_support()" line can be omitted if the program
-        is not going to be frozen to produce an executable.''')
+        is not going to be frozen to produce an executable.
+
+        To fix this issue, refer to the "Safe importing of main module"
+        section in https://docs.python.org/3/library/multiprocessing.html
+        ''')
 
 
 def get_preparation_data(name):
diff --git a/Lib/multiprocessing/synchronize.py b/Lib/multiprocessing/synchronize.py
index 42624b543601a1..3ccbfe311c71f3 100644
--- a/Lib/multiprocessing/synchronize.py
+++ b/Lib/multiprocessing/synchronize.py
@@ -50,8 +50,8 @@ class SemLock(object):
     def __init__(self, kind, value, maxvalue, *, ctx):
         if ctx is None:
             ctx = context._default_context.get_context()
-        name = ctx.get_start_method()
-        unlink_now = sys.platform == 'win32' or name == 'fork'
+        self._is_fork_ctx = ctx.get_start_method() == 'fork'
+        unlink_now = sys.platform == 'win32' or self._is_fork_ctx
         for i in range(100):
             try:
                 sl = self._semlock = _multiprocessing.SemLock(
@@ -103,6 +103,11 @@ def __getstate__(self):
         if sys.platform == 'win32':
             h = context.get_spawning_popen().duplicate_for_child(sl.handle)
         else:
+            if self._is_fork_ctx:
+                raise RuntimeError('A SemLock created in a fork context is being '
+                                   'shared with a process in a spawn context. This is '
+                                   'not supported. Please use the same context to create '
+                                   'multiprocessing objects and Process.')
             h = sl.handle
         return (h, sl.kind, sl.maxvalue, sl.name)
 
@@ -110,6 +115,8 @@ def __setstate__(self, state):
         self._semlock = _multiprocessing.SemLock._rebuild(*state)
         util.debug('recreated blocker with handle %r' % state[0])
         self._make_methods()
+        # Ensure that deserialized SemLock can be serialized again (gh-108520).
+        self._is_fork_ctx = False
 
     @staticmethod
     def _make_name():
diff --git a/Lib/multiprocessing/util.py b/Lib/multiprocessing/util.py
index 6ee0d33e88a060..28c77df1c32ea8 100644
--- a/Lib/multiprocessing/util.py
+++ b/Lib/multiprocessing/util.py
@@ -64,8 +64,7 @@ def get_logger():
     global _logger
     import logging
 
-    logging._acquireLock()
-    try:
+    with logging._lock:
         if not _logger:
 
             _logger = logging.getLogger(LOGGER_NAME)
@@ -79,9 +78,6 @@ def get_logger():
                 atexit._exithandlers.remove((_exit_function, (), {}))
                 atexit._exithandlers.append((_exit_function, (), {}))
 
-    finally:
-        logging._releaseLock()
-
     return _logger
 
 def log_to_stderr(level=None):
diff --git a/Lib/nntplib.py b/Lib/nntplib.py
deleted file mode 100644
index dddea059982be1..00000000000000
--- a/Lib/nntplib.py
+++ /dev/null
@@ -1,1093 +0,0 @@
-"""An NNTP client class based on:
-- RFC 977: Network News Transfer Protocol
-- RFC 2980: Common NNTP Extensions
-- RFC 3977: Network News Transfer Protocol (version 2)
-
-Example:
-
->>> from nntplib import NNTP
->>> s = NNTP('news')
->>> resp, count, first, last, name = s.group('comp.lang.python')
->>> print('Group', name, 'has', count, 'articles, range', first, 'to', last)
-Group comp.lang.python has 51 articles, range 5770 to 5821
->>> resp, subs = s.xhdr('subject', '{0}-{1}'.format(first, last))
->>> resp = s.quit()
->>>
-
-Here 'resp' is the server response line.
-Error responses are turned into exceptions.
-
-To post an article from a file:
->>> f = open(filename, 'rb') # file containing article, including header
->>> resp = s.post(f)
->>>
-
-For descriptions of all methods, read the comments in the code below.
-Note that all arguments and return values representing article numbers
-are strings, not numbers, since they are rarely used for calculations.
-"""
-
-# RFC 977 by Brian Kantor and Phil Lapsley.
-# xover, xgtitle, xpath, date methods by Kevan Heydon
-
-# Incompatible changes from the 2.x nntplib:
-# - all commands are encoded as UTF-8 data (using the "surrogateescape"
-#   error handler), except for raw message data (POST, IHAVE)
-# - all responses are decoded as UTF-8 data (using the "surrogateescape"
-#   error handler), except for raw message data (ARTICLE, HEAD, BODY)
-# - the `file` argument to various methods is keyword-only
-#
-# - NNTP.date() returns a datetime object
-# - NNTP.newgroups() and NNTP.newnews() take a datetime (or date) object,
-#   rather than a pair of (date, time) strings.
-# - NNTP.newgroups() and NNTP.list() return a list of GroupInfo named tuples
-# - NNTP.descriptions() returns a dict mapping group names to descriptions
-# - NNTP.xover() returns a list of dicts mapping field names (header or metadata)
-#   to field values; each dict representing a message overview.
-# - NNTP.article(), NNTP.head() and NNTP.body() return a (response, ArticleInfo)
-#   tuple.
-# - the "internal" methods have been marked private (they now start with
-#   an underscore)
-
-# Other changes from the 2.x/3.1 nntplib:
-# - automatic querying of capabilities at connect
-# - New method NNTP.getcapabilities()
-# - New method NNTP.over()
-# - New helper function decode_header()
-# - NNTP.post() and NNTP.ihave() accept file objects, bytes-like objects and
-#   arbitrary iterables yielding lines.
-# - An extensive test suite :-)
-
-# TODO:
-# - return structured data (GroupInfo etc.) everywhere
-# - support HDR
-
-# Imports
-import re
-import socket
-import collections
-import datetime
-import sys
-import warnings
-
-try:
-    import ssl
-except ImportError:
-    _have_ssl = False
-else:
-    _have_ssl = True
-
-from email.header import decode_header as _email_decode_header
-from socket import _GLOBAL_DEFAULT_TIMEOUT
-
-__all__ = ["NNTP",
-           "NNTPError", "NNTPReplyError", "NNTPTemporaryError",
-           "NNTPPermanentError", "NNTPProtocolError", "NNTPDataError",
-           "decode_header",
-           ]
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-# maximal line length when calling readline(). This is to prevent
-# reading arbitrary length lines. RFC 3977 limits NNTP line length to
-# 512 characters, including CRLF. We have selected 2048 just to be on
-# the safe side.
-_MAXLINE = 2048
-
-
-# Exceptions raised when an error or invalid response is received
-class NNTPError(Exception):
-    """Base class for all nntplib exceptions"""
-    def __init__(self, *args):
-        Exception.__init__(self, *args)
-        try:
-            self.response = args[0]
-        except IndexError:
-            self.response = 'No response given'
-
-class NNTPReplyError(NNTPError):
-    """Unexpected [123]xx reply"""
-    pass
-
-class NNTPTemporaryError(NNTPError):
-    """4xx errors"""
-    pass
-
-class NNTPPermanentError(NNTPError):
-    """5xx errors"""
-    pass
-
-class NNTPProtocolError(NNTPError):
-    """Response does not begin with [1-5]"""
-    pass
-
-class NNTPDataError(NNTPError):
-    """Error in response data"""
-    pass
-
-
-# Standard port used by NNTP servers
-NNTP_PORT = 119
-NNTP_SSL_PORT = 563
-
-# Response numbers that are followed by additional text (e.g. article)
-_LONGRESP = {
-    '100',   # HELP
-    '101',   # CAPABILITIES
-    '211',   # LISTGROUP   (also not multi-line with GROUP)
-    '215',   # LIST
-    '220',   # ARTICLE
-    '221',   # HEAD, XHDR
-    '222',   # BODY
-    '224',   # OVER, XOVER
-    '225',   # HDR
-    '230',   # NEWNEWS
-    '231',   # NEWGROUPS
-    '282',   # XGTITLE
-}
-
-# Default decoded value for LIST OVERVIEW.FMT if not supported
-_DEFAULT_OVERVIEW_FMT = [
-    "subject", "from", "date", "message-id", "references", ":bytes", ":lines"]
-
-# Alternative names allowed in LIST OVERVIEW.FMT response
-_OVERVIEW_FMT_ALTERNATIVES = {
-    'bytes': ':bytes',
-    'lines': ':lines',
-}
-
-# Line terminators (we always output CRLF, but accept any of CRLF, CR, LF)
-_CRLF = b'\r\n'
-
-GroupInfo = collections.namedtuple('GroupInfo',
-                                   ['group', 'last', 'first', 'flag'])
-
-ArticleInfo = collections.namedtuple('ArticleInfo',
-                                     ['number', 'message_id', 'lines'])
-
-
-# Helper function(s)
-def decode_header(header_str):
-    """Takes a unicode string representing a munged header value
-    and decodes it as a (possibly non-ASCII) readable value."""
-    parts = []
-    for v, enc in _email_decode_header(header_str):
-        if isinstance(v, bytes):
-            parts.append(v.decode(enc or 'ascii'))
-        else:
-            parts.append(v)
-    return ''.join(parts)
-
-def _parse_overview_fmt(lines):
-    """Parse a list of string representing the response to LIST OVERVIEW.FMT
-    and return a list of header/metadata names.
-    Raises NNTPDataError if the response is not compliant
-    (cf. RFC 3977, section 8.4)."""
-    fmt = []
-    for line in lines:
-        if line[0] == ':':
-            # Metadata name (e.g. ":bytes")
-            name, _, suffix = line[1:].partition(':')
-            name = ':' + name
-        else:
-            # Header name (e.g. "Subject:" or "Xref:full")
-            name, _, suffix = line.partition(':')
-        name = name.lower()
-        name = _OVERVIEW_FMT_ALTERNATIVES.get(name, name)
-        # Should we do something with the suffix?
-        fmt.append(name)
-    defaults = _DEFAULT_OVERVIEW_FMT
-    if len(fmt) < len(defaults):
-        raise NNTPDataError("LIST OVERVIEW.FMT response too short")
-    if fmt[:len(defaults)] != defaults:
-        raise NNTPDataError("LIST OVERVIEW.FMT redefines default fields")
-    return fmt
-
-def _parse_overview(lines, fmt, data_process_func=None):
-    """Parse the response to an OVER or XOVER command according to the
-    overview format `fmt`."""
-    n_defaults = len(_DEFAULT_OVERVIEW_FMT)
-    overview = []
-    for line in lines:
-        fields = {}
-        article_number, *tokens = line.split('\t')
-        article_number = int(article_number)
-        for i, token in enumerate(tokens):
-            if i >= len(fmt):
-                # XXX should we raise an error? Some servers might not
-                # support LIST OVERVIEW.FMT and still return additional
-                # headers.
-                continue
-            field_name = fmt[i]
-            is_metadata = field_name.startswith(':')
-            if i >= n_defaults and not is_metadata:
-                # Non-default header names are included in full in the response
-                # (unless the field is totally empty)
-                h = field_name + ": "
-                if token and token[:len(h)].lower() != h:
-                    raise NNTPDataError("OVER/XOVER response doesn't include "
-                                        "names of additional headers")
-                token = token[len(h):] if token else None
-            fields[fmt[i]] = token
-        overview.append((article_number, fields))
-    return overview
-
-def _parse_datetime(date_str, time_str=None):
-    """Parse a pair of (date, time) strings, and return a datetime object.
-    If only the date is given, it is assumed to be date and time
-    concatenated together (e.g. response to the DATE command).
-    """
-    if time_str is None:
-        time_str = date_str[-6:]
-        date_str = date_str[:-6]
-    hours = int(time_str[:2])
-    minutes = int(time_str[2:4])
-    seconds = int(time_str[4:])
-    year = int(date_str[:-4])
-    month = int(date_str[-4:-2])
-    day = int(date_str[-2:])
-    # RFC 3977 doesn't say how to interpret 2-char years.  Assume that
-    # there are no dates before 1970 on Usenet.
-    if year < 70:
-        year += 2000
-    elif year < 100:
-        year += 1900
-    return datetime.datetime(year, month, day, hours, minutes, seconds)
-
-def _unparse_datetime(dt, legacy=False):
-    """Format a date or datetime object as a pair of (date, time) strings
-    in the format required by the NEWNEWS and NEWGROUPS commands.  If a
-    date object is passed, the time is assumed to be midnight (00h00).
-
-    The returned representation depends on the legacy flag:
-    * if legacy is False (the default):
-      date has the YYYYMMDD format and time the HHMMSS format
-    * if legacy is True:
-      date has the YYMMDD format and time the HHMMSS format.
-    RFC 3977 compliant servers should understand both formats; therefore,
-    legacy is only needed when talking to old servers.
-    """
-    if not isinstance(dt, datetime.datetime):
-        time_str = "000000"
-    else:
-        time_str = "{0.hour:02d}{0.minute:02d}{0.second:02d}".format(dt)
-    y = dt.year
-    if legacy:
-        y = y % 100
-        date_str = "{0:02d}{1.month:02d}{1.day:02d}".format(y, dt)
-    else:
-        date_str = "{0:04d}{1.month:02d}{1.day:02d}".format(y, dt)
-    return date_str, time_str
-
-
-if _have_ssl:
-
-    def _encrypt_on(sock, context, hostname):
-        """Wrap a socket in SSL/TLS. Arguments:
-        - sock: Socket to wrap
-        - context: SSL context to use for the encrypted connection
-        Returns:
-        - sock: New, encrypted socket.
-        """
-        # Generate a default SSL context if none was passed.
-        if context is None:
-            context = ssl._create_stdlib_context()
-        return context.wrap_socket(sock, server_hostname=hostname)
-
-
-# The classes themselves
-class NNTP:
-    # UTF-8 is the character set for all NNTP commands and responses: they
-    # are automatically encoded (when sending) and decoded (and receiving)
-    # by this class.
-    # However, some multi-line data blocks can contain arbitrary bytes (for
-    # example, latin-1 or utf-16 data in the body of a message). Commands
-    # taking (POST, IHAVE) or returning (HEAD, BODY, ARTICLE) raw message
-    # data will therefore only accept and produce bytes objects.
-    # Furthermore, since there could be non-compliant servers out there,
-    # we use 'surrogateescape' as the error handler for fault tolerance
-    # and easy round-tripping. This could be useful for some applications
-    # (e.g. NNTP gateways).
-
-    encoding = 'utf-8'
-    errors = 'surrogateescape'
-
-    def __init__(self, host, port=NNTP_PORT, user=None, password=None,
-                 readermode=None, usenetrc=False,
-                 timeout=_GLOBAL_DEFAULT_TIMEOUT):
-        """Initialize an instance.  Arguments:
-        - host: hostname to connect to
-        - port: port to connect to (default the standard NNTP port)
-        - user: username to authenticate with
-        - password: password to use with username
-        - readermode: if true, send 'mode reader' command after
-                      connecting.
-        - usenetrc: allow loading username and password from ~/.netrc file
-                    if not specified explicitly
-        - timeout: timeout (in seconds) used for socket connections
-
-        readermode is sometimes necessary if you are connecting to an
-        NNTP server on the local machine and intend to call
-        reader-specific commands, such as `group'.  If you get
-        unexpected NNTPPermanentErrors, you might need to set
-        readermode.
-        """
-        self.host = host
-        self.port = port
-        self.sock = self._create_socket(timeout)
-        self.file = None
-        try:
-            self.file = self.sock.makefile("rwb")
-            self._base_init(readermode)
-            if user or usenetrc:
-                self.login(user, password, usenetrc)
-        except:
-            if self.file:
-                self.file.close()
-            self.sock.close()
-            raise
-
-    def _base_init(self, readermode):
-        """Partial initialization for the NNTP protocol.
-        This instance method is extracted for supporting the test code.
-        """
-        self.debugging = 0
-        self.welcome = self._getresp()
-
-        # Inquire about capabilities (RFC 3977).
-        self._caps = None
-        self.getcapabilities()
-
-        # 'MODE READER' is sometimes necessary to enable 'reader' mode.
-        # However, the order in which 'MODE READER' and 'AUTHINFO' need to
-        # arrive differs between some NNTP servers. If _setreadermode() fails
-        # with an authorization failed error, it will set this to True;
-        # the login() routine will interpret that as a request to try again
-        # after performing its normal function.
-        # Enable only if we're not already in READER mode anyway.
-        self.readermode_afterauth = False
-        if readermode and 'READER' not in self._caps:
-            self._setreadermode()
-            if not self.readermode_afterauth:
-                # Capabilities might have changed after MODE READER
-                self._caps = None
-                self.getcapabilities()
-
-        # RFC 4642 2.2.2: Both the client and the server MUST know if there is
-        # a TLS session active.  A client MUST NOT attempt to start a TLS
-        # session if a TLS session is already active.
-        self.tls_on = False
-
-        # Log in and encryption setup order is left to subclasses.
-        self.authenticated = False
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        is_connected = lambda: hasattr(self, "file")
-        if is_connected():
-            try:
-                self.quit()
-            except (OSError, EOFError):
-                pass
-            finally:
-                if is_connected():
-                    self._close()
-
-    def _create_socket(self, timeout):
-        if timeout is not None and not timeout:
-            raise ValueError('Non-blocking socket (timeout=0) is not supported')
-        sys.audit("nntplib.connect", self, self.host, self.port)
-        return socket.create_connection((self.host, self.port), timeout)
-
-    def getwelcome(self):
-        """Get the welcome message from the server
-        (this is read and squirreled away by __init__()).
-        If the response code is 200, posting is allowed;
-        if it 201, posting is not allowed."""
-
-        if self.debugging: print('*welcome*', repr(self.welcome))
-        return self.welcome
-
-    def getcapabilities(self):
-        """Get the server capabilities, as read by __init__().
-        If the CAPABILITIES command is not supported, an empty dict is
-        returned."""
-        if self._caps is None:
-            self.nntp_version = 1
-            self.nntp_implementation = None
-            try:
-                resp, caps = self.capabilities()
-            except (NNTPPermanentError, NNTPTemporaryError):
-                # Server doesn't support capabilities
-                self._caps = {}
-            else:
-                self._caps = caps
-                if 'VERSION' in caps:
-                    # The server can advertise several supported versions,
-                    # choose the highest.
-                    self.nntp_version = max(map(int, caps['VERSION']))
-                if 'IMPLEMENTATION' in caps:
-                    self.nntp_implementation = ' '.join(caps['IMPLEMENTATION'])
-        return self._caps
-
-    def set_debuglevel(self, level):
-        """Set the debugging level.  Argument 'level' means:
-        0: no debugging output (default)
-        1: print commands and responses but not body text etc.
-        2: also print raw lines read and sent before stripping CR/LF"""
-
-        self.debugging = level
-    debug = set_debuglevel
-
-    def _putline(self, line):
-        """Internal: send one line to the server, appending CRLF.
-        The `line` must be a bytes-like object."""
-        sys.audit("nntplib.putline", self, line)
-        line = line + _CRLF
-        if self.debugging > 1: print('*put*', repr(line))
-        self.file.write(line)
-        self.file.flush()
-
-    def _putcmd(self, line):
-        """Internal: send one command to the server (through _putline()).
-        The `line` must be a unicode string."""
-        if self.debugging: print('*cmd*', repr(line))
-        line = line.encode(self.encoding, self.errors)
-        self._putline(line)
-
-    def _getline(self, strip_crlf=True):
-        """Internal: return one line from the server, stripping _CRLF.
-        Raise EOFError if the connection is closed.
-        Returns a bytes object."""
-        line = self.file.readline(_MAXLINE +1)
-        if len(line) > _MAXLINE:
-            raise NNTPDataError('line too long')
-        if self.debugging > 1:
-            print('*get*', repr(line))
-        if not line: raise EOFError
-        if strip_crlf:
-            if line[-2:] == _CRLF:
-                line = line[:-2]
-            elif line[-1:] in _CRLF:
-                line = line[:-1]
-        return line
-
-    def _getresp(self):
-        """Internal: get a response from the server.
-        Raise various errors if the response indicates an error.
-        Returns a unicode string."""
-        resp = self._getline()
-        if self.debugging: print('*resp*', repr(resp))
-        resp = resp.decode(self.encoding, self.errors)
-        c = resp[:1]
-        if c == '4':
-            raise NNTPTemporaryError(resp)
-        if c == '5':
-            raise NNTPPermanentError(resp)
-        if c not in '123':
-            raise NNTPProtocolError(resp)
-        return resp
-
-    def _getlongresp(self, file=None):
-        """Internal: get a response plus following text from the server.
-        Raise various errors if the response indicates an error.
-
-        Returns a (response, lines) tuple where `response` is a unicode
-        string and `lines` is a list of bytes objects.
-        If `file` is a file-like object, it must be open in binary mode.
-        """
-
-        openedFile = None
-        try:
-            # If a string was passed then open a file with that name
-            if isinstance(file, (str, bytes)):
-                openedFile = file = open(file, "wb")
-
-            resp = self._getresp()
-            if resp[:3] not in _LONGRESP:
-                raise NNTPReplyError(resp)
-
-            lines = []
-            if file is not None:
-                # XXX lines = None instead?
-                terminators = (b'.' + _CRLF, b'.\n')
-                while 1:
-                    line = self._getline(False)
-                    if line in terminators:
-                        break
-                    if line.startswith(b'..'):
-                        line = line[1:]
-                    file.write(line)
-            else:
-                terminator = b'.'
-                while 1:
-                    line = self._getline()
-                    if line == terminator:
-                        break
-                    if line.startswith(b'..'):
-                        line = line[1:]
-                    lines.append(line)
-        finally:
-            # If this method created the file, then it must close it
-            if openedFile:
-                openedFile.close()
-
-        return resp, lines
-
-    def _shortcmd(self, line):
-        """Internal: send a command and get the response.
-        Same return value as _getresp()."""
-        self._putcmd(line)
-        return self._getresp()
-
-    def _longcmd(self, line, file=None):
-        """Internal: send a command and get the response plus following text.
-        Same return value as _getlongresp()."""
-        self._putcmd(line)
-        return self._getlongresp(file)
-
-    def _longcmdstring(self, line, file=None):
-        """Internal: send a command and get the response plus following text.
-        Same as _longcmd() and _getlongresp(), except that the returned `lines`
-        are unicode strings rather than bytes objects.
-        """
-        self._putcmd(line)
-        resp, list = self._getlongresp(file)
-        return resp, [line.decode(self.encoding, self.errors)
-                      for line in list]
-
-    def _getoverviewfmt(self):
-        """Internal: get the overview format. Queries the server if not
-        already done, else returns the cached value."""
-        try:
-            return self._cachedoverviewfmt
-        except AttributeError:
-            pass
-        try:
-            resp, lines = self._longcmdstring("LIST OVERVIEW.FMT")
-        except NNTPPermanentError:
-            # Not supported by server?
-            fmt = _DEFAULT_OVERVIEW_FMT[:]
-        else:
-            fmt = _parse_overview_fmt(lines)
-        self._cachedoverviewfmt = fmt
-        return fmt
-
-    def _grouplist(self, lines):
-        # Parse lines into "group last first flag"
-        return [GroupInfo(*line.split()) for line in lines]
-
-    def capabilities(self):
-        """Process a CAPABILITIES command.  Not supported by all servers.
-        Return:
-        - resp: server response if successful
-        - caps: a dictionary mapping capability names to lists of tokens
-        (for example {'VERSION': ['2'], 'OVER': [], LIST: ['ACTIVE', 'HEADERS'] })
-        """
-        caps = {}
-        resp, lines = self._longcmdstring("CAPABILITIES")
-        for line in lines:
-            name, *tokens = line.split()
-            caps[name] = tokens
-        return resp, caps
-
-    def newgroups(self, date, *, file=None):
-        """Process a NEWGROUPS command.  Arguments:
-        - date: a date or datetime object
-        Return:
-        - resp: server response if successful
-        - list: list of newsgroup names
-        """
-        if not isinstance(date, (datetime.date, datetime.date)):
-            raise TypeError(
-                "the date parameter must be a date or datetime object, "
-                "not '{:40}'".format(date.__class__.__name__))
-        date_str, time_str = _unparse_datetime(date, self.nntp_version < 2)
-        cmd = 'NEWGROUPS {0} {1}'.format(date_str, time_str)
-        resp, lines = self._longcmdstring(cmd, file)
-        return resp, self._grouplist(lines)
-
-    def newnews(self, group, date, *, file=None):
-        """Process a NEWNEWS command.  Arguments:
-        - group: group name or '*'
-        - date: a date or datetime object
-        Return:
-        - resp: server response if successful
-        - list: list of message ids
-        """
-        if not isinstance(date, (datetime.date, datetime.date)):
-            raise TypeError(
-                "the date parameter must be a date or datetime object, "
-                "not '{:40}'".format(date.__class__.__name__))
-        date_str, time_str = _unparse_datetime(date, self.nntp_version < 2)
-        cmd = 'NEWNEWS {0} {1} {2}'.format(group, date_str, time_str)
-        return self._longcmdstring(cmd, file)
-
-    def list(self, group_pattern=None, *, file=None):
-        """Process a LIST or LIST ACTIVE command. Arguments:
-        - group_pattern: a pattern indicating which groups to query
-        - file: Filename string or file object to store the result in
-        Returns:
-        - resp: server response if successful
-        - list: list of (group, last, first, flag) (strings)
-        """
-        if group_pattern is not None:
-            command = 'LIST ACTIVE ' + group_pattern
-        else:
-            command = 'LIST'
-        resp, lines = self._longcmdstring(command, file)
-        return resp, self._grouplist(lines)
-
-    def _getdescriptions(self, group_pattern, return_all):
-        line_pat = re.compile('^(?P<group>[^ \t]+)[ \t]+(.*)$')
-        # Try the more std (acc. to RFC2980) LIST NEWSGROUPS first
-        resp, lines = self._longcmdstring('LIST NEWSGROUPS ' + group_pattern)
-        if not resp.startswith('215'):
-            # Now the deprecated XGTITLE.  This either raises an error
-            # or succeeds with the same output structure as LIST
-            # NEWSGROUPS.
-            resp, lines = self._longcmdstring('XGTITLE ' + group_pattern)
-        groups = {}
-        for raw_line in lines:
-            match = line_pat.search(raw_line.strip())
-            if match:
-                name, desc = match.group(1, 2)
-                if not return_all:
-                    return desc
-                groups[name] = desc
-        if return_all:
-            return resp, groups
-        else:
-            # Nothing found
-            return ''
-
-    def description(self, group):
-        """Get a description for a single group.  If more than one
-        group matches ('group' is a pattern), return the first.  If no
-        group matches, return an empty string.
-
-        This elides the response code from the server, since it can
-        only be '215' or '285' (for xgtitle) anyway.  If the response
-        code is needed, use the 'descriptions' method.
-
-        NOTE: This neither checks for a wildcard in 'group' nor does
-        it check whether the group actually exists."""
-        return self._getdescriptions(group, False)
-
-    def descriptions(self, group_pattern):
-        """Get descriptions for a range of groups."""
-        return self._getdescriptions(group_pattern, True)
-
-    def group(self, name):
-        """Process a GROUP command.  Argument:
-        - group: the group name
-        Returns:
-        - resp: server response if successful
-        - count: number of articles
-        - first: first article number
-        - last: last article number
-        - name: the group name
-        """
-        resp = self._shortcmd('GROUP ' + name)
-        if not resp.startswith('211'):
-            raise NNTPReplyError(resp)
-        words = resp.split()
-        count = first = last = 0
-        n = len(words)
-        if n > 1:
-            count = words[1]
-            if n > 2:
-                first = words[2]
-                if n > 3:
-                    last = words[3]
-                    if n > 4:
-                        name = words[4].lower()
-        return resp, int(count), int(first), int(last), name
-
-    def help(self, *, file=None):
-        """Process a HELP command. Argument:
-        - file: Filename string or file object to store the result in
-        Returns:
-        - resp: server response if successful
-        - list: list of strings returned by the server in response to the
-                HELP command
-        """
-        return self._longcmdstring('HELP', file)
-
-    def _statparse(self, resp):
-        """Internal: parse the response line of a STAT, NEXT, LAST,
-        ARTICLE, HEAD or BODY command."""
-        if not resp.startswith('22'):
-            raise NNTPReplyError(resp)
-        words = resp.split()
-        art_num = int(words[1])
-        message_id = words[2]
-        return resp, art_num, message_id
-
-    def _statcmd(self, line):
-        """Internal: process a STAT, NEXT or LAST command."""
-        resp = self._shortcmd(line)
-        return self._statparse(resp)
-
-    def stat(self, message_spec=None):
-        """Process a STAT command.  Argument:
-        - message_spec: article number or message id (if not specified,
-          the current article is selected)
-        Returns:
-        - resp: server response if successful
-        - art_num: the article number
-        - message_id: the message id
-        """
-        if message_spec:
-            return self._statcmd('STAT {0}'.format(message_spec))
-        else:
-            return self._statcmd('STAT')
-
-    def next(self):
-        """Process a NEXT command.  No arguments.  Return as for STAT."""
-        return self._statcmd('NEXT')
-
-    def last(self):
-        """Process a LAST command.  No arguments.  Return as for STAT."""
-        return self._statcmd('LAST')
-
-    def _artcmd(self, line, file=None):
-        """Internal: process a HEAD, BODY or ARTICLE command."""
-        resp, lines = self._longcmd(line, file)
-        resp, art_num, message_id = self._statparse(resp)
-        return resp, ArticleInfo(art_num, message_id, lines)
-
-    def head(self, message_spec=None, *, file=None):
-        """Process a HEAD command.  Argument:
-        - message_spec: article number or message id
-        - file: filename string or file object to store the headers in
-        Returns:
-        - resp: server response if successful
-        - ArticleInfo: (article number, message id, list of header lines)
-        """
-        if message_spec is not None:
-            cmd = 'HEAD {0}'.format(message_spec)
-        else:
-            cmd = 'HEAD'
-        return self._artcmd(cmd, file)
-
-    def body(self, message_spec=None, *, file=None):
-        """Process a BODY command.  Argument:
-        - message_spec: article number or message id
-        - file: filename string or file object to store the body in
-        Returns:
-        - resp: server response if successful
-        - ArticleInfo: (article number, message id, list of body lines)
-        """
-        if message_spec is not None:
-            cmd = 'BODY {0}'.format(message_spec)
-        else:
-            cmd = 'BODY'
-        return self._artcmd(cmd, file)
-
-    def article(self, message_spec=None, *, file=None):
-        """Process an ARTICLE command.  Argument:
-        - message_spec: article number or message id
-        - file: filename string or file object to store the article in
-        Returns:
-        - resp: server response if successful
-        - ArticleInfo: (article number, message id, list of article lines)
-        """
-        if message_spec is not None:
-            cmd = 'ARTICLE {0}'.format(message_spec)
-        else:
-            cmd = 'ARTICLE'
-        return self._artcmd(cmd, file)
-
-    def slave(self):
-        """Process a SLAVE command.  Returns:
-        - resp: server response if successful
-        """
-        return self._shortcmd('SLAVE')
-
-    def xhdr(self, hdr, str, *, file=None):
-        """Process an XHDR command (optional server extension).  Arguments:
-        - hdr: the header type (e.g. 'subject')
-        - str: an article nr, a message id, or a range nr1-nr2
-        - file: Filename string or file object to store the result in
-        Returns:
-        - resp: server response if successful
-        - list: list of (nr, value) strings
-        """
-        pat = re.compile('^([0-9]+) ?(.*)\n?')
-        resp, lines = self._longcmdstring('XHDR {0} {1}'.format(hdr, str), file)
-        def remove_number(line):
-            m = pat.match(line)
-            return m.group(1, 2) if m else line
-        return resp, [remove_number(line) for line in lines]
-
-    def xover(self, start, end, *, file=None):
-        """Process an XOVER command (optional server extension) Arguments:
-        - start: start of range
-        - end: end of range
-        - file: Filename string or file object to store the result in
-        Returns:
-        - resp: server response if successful
-        - list: list of dicts containing the response fields
-        """
-        resp, lines = self._longcmdstring('XOVER {0}-{1}'.format(start, end),
-                                          file)
-        fmt = self._getoverviewfmt()
-        return resp, _parse_overview(lines, fmt)
-
-    def over(self, message_spec, *, file=None):
-        """Process an OVER command.  If the command isn't supported, fall
-        back to XOVER. Arguments:
-        - message_spec:
-            - either a message id, indicating the article to fetch
-              information about
-            - or a (start, end) tuple, indicating a range of article numbers;
-              if end is None, information up to the newest message will be
-              retrieved
-            - or None, indicating the current article number must be used
-        - file: Filename string or file object to store the result in
-        Returns:
-        - resp: server response if successful
-        - list: list of dicts containing the response fields
-
-        NOTE: the "message id" form isn't supported by XOVER
-        """
-        cmd = 'OVER' if 'OVER' in self._caps else 'XOVER'
-        if isinstance(message_spec, (tuple, list)):
-            start, end = message_spec
-            cmd += ' {0}-{1}'.format(start, end or '')
-        elif message_spec is not None:
-            cmd = cmd + ' ' + message_spec
-        resp, lines = self._longcmdstring(cmd, file)
-        fmt = self._getoverviewfmt()
-        return resp, _parse_overview(lines, fmt)
-
-    def date(self):
-        """Process the DATE command.
-        Returns:
-        - resp: server response if successful
-        - date: datetime object
-        """
-        resp = self._shortcmd("DATE")
-        if not resp.startswith('111'):
-            raise NNTPReplyError(resp)
-        elem = resp.split()
-        if len(elem) != 2:
-            raise NNTPDataError(resp)
-        date = elem[1]
-        if len(date) != 14:
-            raise NNTPDataError(resp)
-        return resp, _parse_datetime(date, None)
-
-    def _post(self, command, f):
-        resp = self._shortcmd(command)
-        # Raises a specific exception if posting is not allowed
-        if not resp.startswith('3'):
-            raise NNTPReplyError(resp)
-        if isinstance(f, (bytes, bytearray)):
-            f = f.splitlines()
-        # We don't use _putline() because:
-        # - we don't want additional CRLF if the file or iterable is already
-        #   in the right format
-        # - we don't want a spurious flush() after each line is written
-        for line in f:
-            if not line.endswith(_CRLF):
-                line = line.rstrip(b"\r\n") + _CRLF
-            if line.startswith(b'.'):
-                line = b'.' + line
-            self.file.write(line)
-        self.file.write(b".\r\n")
-        self.file.flush()
-        return self._getresp()
-
-    def post(self, data):
-        """Process a POST command.  Arguments:
-        - data: bytes object, iterable or file containing the article
-        Returns:
-        - resp: server response if successful"""
-        return self._post('POST', data)
-
-    def ihave(self, message_id, data):
-        """Process an IHAVE command.  Arguments:
-        - message_id: message-id of the article
-        - data: file containing the article
-        Returns:
-        - resp: server response if successful
-        Note that if the server refuses the article an exception is raised."""
-        return self._post('IHAVE {0}'.format(message_id), data)
-
-    def _close(self):
-        try:
-            if self.file:
-                self.file.close()
-                del self.file
-        finally:
-            self.sock.close()
-
-    def quit(self):
-        """Process a QUIT command and close the socket.  Returns:
-        - resp: server response if successful"""
-        try:
-            resp = self._shortcmd('QUIT')
-        finally:
-            self._close()
-        return resp
-
-    def login(self, user=None, password=None, usenetrc=True):
-        if self.authenticated:
-            raise ValueError("Already logged in.")
-        if not user and not usenetrc:
-            raise ValueError(
-                "At least one of `user` and `usenetrc` must be specified")
-        # If no login/password was specified but netrc was requested,
-        # try to get them from ~/.netrc
-        # Presume that if .netrc has an entry, NNRP authentication is required.
-        try:
-            if usenetrc and not user:
-                import netrc
-                credentials = netrc.netrc()
-                auth = credentials.authenticators(self.host)
-                if auth:
-                    user = auth[0]
-                    password = auth[2]
-        except OSError:
-            pass
-        # Perform NNTP authentication if needed.
-        if not user:
-            return
-        resp = self._shortcmd('authinfo user ' + user)
-        if resp.startswith('381'):
-            if not password:
-                raise NNTPReplyError(resp)
-            else:
-                resp = self._shortcmd('authinfo pass ' + password)
-                if not resp.startswith('281'):
-                    raise NNTPPermanentError(resp)
-        # Capabilities might have changed after login
-        self._caps = None
-        self.getcapabilities()
-        # Attempt to send mode reader if it was requested after login.
-        # Only do so if we're not in reader mode already.
-        if self.readermode_afterauth and 'READER' not in self._caps:
-            self._setreadermode()
-            # Capabilities might have changed after MODE READER
-            self._caps = None
-            self.getcapabilities()
-
-    def _setreadermode(self):
-        try:
-            self.welcome = self._shortcmd('mode reader')
-        except NNTPPermanentError:
-            # Error 5xx, probably 'not implemented'
-            pass
-        except NNTPTemporaryError as e:
-            if e.response.startswith('480'):
-                # Need authorization before 'mode reader'
-                self.readermode_afterauth = True
-            else:
-                raise
-
-    if _have_ssl:
-        def starttls(self, context=None):
-            """Process a STARTTLS command. Arguments:
-            - context: SSL context to use for the encrypted connection
-            """
-            # Per RFC 4642, STARTTLS MUST NOT be sent after authentication or if
-            # a TLS session already exists.
-            if self.tls_on:
-                raise ValueError("TLS is already enabled.")
-            if self.authenticated:
-                raise ValueError("TLS cannot be started after authentication.")
-            resp = self._shortcmd('STARTTLS')
-            if resp.startswith('382'):
-                self.file.close()
-                self.sock = _encrypt_on(self.sock, context, self.host)
-                self.file = self.sock.makefile("rwb")
-                self.tls_on = True
-                # Capabilities may change after TLS starts up, so ask for them
-                # again.
-                self._caps = None
-                self.getcapabilities()
-            else:
-                raise NNTPError("TLS failed to start.")
-
-
-if _have_ssl:
-    class NNTP_SSL(NNTP):
-
-        def __init__(self, host, port=NNTP_SSL_PORT,
-                    user=None, password=None, ssl_context=None,
-                    readermode=None, usenetrc=False,
-                    timeout=_GLOBAL_DEFAULT_TIMEOUT):
-            """This works identically to NNTP.__init__, except for the change
-            in default port and the `ssl_context` argument for SSL connections.
-            """
-            self.ssl_context = ssl_context
-            super().__init__(host, port, user, password, readermode,
-                             usenetrc, timeout)
-
-        def _create_socket(self, timeout):
-            sock = super()._create_socket(timeout)
-            try:
-                sock = _encrypt_on(sock, self.ssl_context, self.host)
-            except:
-                sock.close()
-                raise
-            else:
-                return sock
-
-    __all__.append("NNTP_SSL")
-
-
-# Test retrieval when run as a script.
-if __name__ == '__main__':
-    import argparse
-
-    parser = argparse.ArgumentParser(description="""\
-        nntplib built-in demo - display the latest articles in a newsgroup""")
-    parser.add_argument('-g', '--group', default='gmane.comp.python.general',
-                        help='group to fetch messages from (default: %(default)s)')
-    parser.add_argument('-s', '--server', default='news.gmane.io',
-                        help='NNTP server hostname (default: %(default)s)')
-    parser.add_argument('-p', '--port', default=-1, type=int,
-                        help='NNTP port number (default: %s / %s)' % (NNTP_PORT, NNTP_SSL_PORT))
-    parser.add_argument('-n', '--nb-articles', default=10, type=int,
-                        help='number of articles to fetch (default: %(default)s)')
-    parser.add_argument('-S', '--ssl', action='store_true', default=False,
-                        help='use NNTP over SSL')
-    args = parser.parse_args()
-
-    port = args.port
-    if not args.ssl:
-        if port == -1:
-            port = NNTP_PORT
-        s = NNTP(host=args.server, port=port)
-    else:
-        if port == -1:
-            port = NNTP_SSL_PORT
-        s = NNTP_SSL(host=args.server, port=port)
-
-    caps = s.getcapabilities()
-    if 'STARTTLS' in caps:
-        s.starttls()
-    resp, count, first, last, name = s.group(args.group)
-    print('Group', name, 'has', count, 'articles, range', first, 'to', last)
-
-    def cut(s, lim):
-        if len(s) > lim:
-            s = s[:lim - 4] + "..."
-        return s
-
-    first = str(int(last) - args.nb_articles + 1)
-    resp, overviews = s.xover(first, last)
-    for artnum, over in overviews:
-        author = decode_header(over['from']).split('<', 1)[0]
-        subject = decode_header(over['subject'])
-        lines = int(over[':lines'])
-        print("{:7} {:20} {:42} ({})".format(
-              artnum, cut(author, 20), cut(subject, 42), lines)
-              )
-
-    s.quit()
diff --git a/Lib/ntpath.py b/Lib/ntpath.py
index 0f3674fe11eecd..3061a4a5ef4c56 100644
--- a/Lib/ntpath.py
+++ b/Lib/ntpath.py
@@ -23,7 +23,6 @@
 import genericpath
 from genericpath import *
 
-
 __all__ = ["normcase","isabs","join","splitdrive","splitroot","split","splitext",
            "basename","dirname","commonprefix","getsize","getmtime",
            "getatime","getctime", "islink","exists","lexists","isdir","isfile",
@@ -601,7 +600,7 @@ def abspath(path):
             return _abspath_fallback(path)
 
 try:
-    from nt import _getfinalpathname, readlink as _nt_readlink
+    from nt import _findfirstfile, _getfinalpathname, readlink as _nt_readlink
 except ImportError:
     # realpath is a no-op on systems without _getfinalpathname support.
     realpath = abspath
@@ -688,10 +687,15 @@ def _getfinalpathname_nonstrict(path):
                 except OSError:
                     # If we fail to readlink(), let's keep traversing
                     pass
-                path, name = split(path)
-                # TODO (bpo-38186): Request the real file name from the directory
-                # entry using FindFirstFileW. For now, we will return the path
-                # as best we have it
+                # If we get these errors, try to get the real name of the file without accessing it.
+                if ex.winerror in (1, 5, 32, 50, 87, 1920, 1921):
+                    try:
+                        name = _findfirstfile(path)
+                        path, _ = split(path)
+                    except OSError:
+                        path, name = split(path)
+                else:
+                    path, name = split(path)
                 if path and not name:
                     return path + tail
                 tail = join(name, tail) if tail else name
@@ -721,6 +725,14 @@ def realpath(path, *, strict=False):
         try:
             path = _getfinalpathname(path)
             initial_winerror = 0
+        except ValueError as ex:
+            # gh-106242: Raised for embedded null characters
+            # In strict mode, we convert into an OSError.
+            # Non-strict mode returns the path as-is, since we've already
+            # made it absolute.
+            if strict:
+                raise OSError(str(ex)) from None
+            path = normpath(path)
         except OSError as ex:
             if strict:
                 raise
@@ -740,6 +752,10 @@ def realpath(path, *, strict=False):
             try:
                 if _getfinalpathname(spath) == path:
                     path = spath
+            except ValueError as ex:
+                # Unexpected, as an invalid path should not have gained a prefix
+                # at any point, but we ignore this error just in case.
+                pass
             except OSError as ex:
                 # If the path does not exist and originally did not exist, then
                 # strip the prefix anyway.
@@ -867,3 +883,19 @@ def commonpath(paths):
 except ImportError:
     # Use genericpath.* as imported above
     pass
+
+
+try:
+    from nt import _path_isdevdrive
+except ImportError:
+    def isdevdrive(path):
+        """Determines whether the specified path is on a Windows Dev Drive."""
+        # Never a Dev Drive
+        return False
+else:
+    def isdevdrive(path):
+        """Determines whether the specified path is on a Windows Dev Drive."""
+        try:
+            return _path_isdevdrive(abspath(path))
+        except OSError:
+            return False
diff --git a/Lib/opcode.py b/Lib/opcode.py
index 155466b1ab85f1..88f4df7c0e8c38 100644
--- a/Lib/opcode.py
+++ b/Lib/opcode.py
@@ -4,428 +4,41 @@
 operate on bytecodes (e.g. peephole optimizers).
 """
 
-__all__ = ["cmp_op", "hasarg", "hasconst", "hasname", "hasjrel", "hasjabs",
-           "haslocal", "hascompare", "hasfree", "hasexc", "opname", "opmap",
-           "HAVE_ARGUMENT", "EXTENDED_ARG"]
 
-# It's a chicken-and-egg I'm afraid:
-# We're imported before _opcode's made.
-# With exception unheeded
-# (stack_effect is not needed)
-# Both our chickens and eggs are allayed.
-#     --Larry Hastings, 2013/11/23
+__all__ = ["cmp_op", "stack_effect", "hascompare", "opname", "opmap",
+           "HAVE_ARGUMENT", "EXTENDED_ARG", "hasarg", "hasconst", "hasname",
+           "hasjump", "hasjrel", "hasjabs", "hasfree", "haslocal", "hasexc"]
 
-try:
-    from _opcode import stack_effect
-    __all__.append('stack_effect')
-except ImportError:
-    pass
+import _opcode
+from _opcode import stack_effect
 
-cmp_op = ('<', '<=', '==', '!=', '>', '>=')
-
-hasarg = []
-hasconst = []
-hasname = []
-hasjrel = []
-hasjabs = []
-haslocal = []
-hascompare = []
-hasfree = []
-hasexc = []
-
-
-ENABLE_SPECIALIZATION = True
-
-def is_pseudo(op):
-    return op >= MIN_PSEUDO_OPCODE and op <= MAX_PSEUDO_OPCODE
-
-oplists = [hasarg, hasconst, hasname, hasjrel, hasjabs,
-           haslocal, hascompare, hasfree, hasexc]
-
-opmap = {}
-
-## pseudo opcodes (used in the compiler) mapped to the values
-## they can become in the actual code.
-_pseudo_ops = {}
-
-def def_op(name, op):
-    opmap[name] = op
-
-def name_op(name, op):
-    def_op(name, op)
-    hasname.append(op)
-
-def jrel_op(name, op):
-    def_op(name, op)
-    hasjrel.append(op)
-
-def jabs_op(name, op):
-    def_op(name, op)
-    hasjabs.append(op)
-
-def pseudo_op(name, op, real_ops):
-    def_op(name, op)
-    _pseudo_ops[name] = real_ops
-    # add the pseudo opcode to the lists its targets are in
-    for oplist in oplists:
-        res = [opmap[rop] in oplist for rop in real_ops]
-        if any(res):
-            assert all(res)
-            oplist.append(op)
-
-
-# Instruction opcodes for compiled code
-# Blank lines correspond to available opcodes
-
-def_op('CACHE', 0)
-def_op('POP_TOP', 1)
-def_op('PUSH_NULL', 2)
-def_op('INTERPRETER_EXIT', 3)
-
-def_op('END_FOR', 4)
-def_op('END_SEND', 5)
-
-def_op('NOP', 9)
-
-def_op('UNARY_NEGATIVE', 11)
-def_op('UNARY_NOT', 12)
-
-def_op('UNARY_INVERT', 15)
-
-# We reserve 17 as it is the initial value for the specializing counter
-# This helps us catch cases where we attempt to execute a cache.
-def_op('RESERVED', 17)
-
-def_op('BINARY_SUBSCR', 25)
-def_op('BINARY_SLICE', 26)
-def_op('STORE_SLICE', 27)
-
-def_op('GET_LEN', 30)
-def_op('MATCH_MAPPING', 31)
-def_op('MATCH_SEQUENCE', 32)
-def_op('MATCH_KEYS', 33)
-
-def_op('PUSH_EXC_INFO', 35)
-def_op('CHECK_EXC_MATCH', 36)
-def_op('CHECK_EG_MATCH', 37)
-
-def_op('WITH_EXCEPT_START', 49)
-def_op('GET_AITER', 50)
-def_op('GET_ANEXT', 51)
-def_op('BEFORE_ASYNC_WITH', 52)
-def_op('BEFORE_WITH', 53)
-def_op('END_ASYNC_FOR', 54)
-def_op('CLEANUP_THROW', 55)
-
-def_op('STORE_SUBSCR', 60)
-def_op('DELETE_SUBSCR', 61)
-
-def_op('GET_ITER', 68)
-def_op('GET_YIELD_FROM_ITER', 69)
-
-def_op('LOAD_BUILD_CLASS', 71)
-
-def_op('LOAD_ASSERTION_ERROR', 74)
-def_op('RETURN_GENERATOR', 75)
-
-def_op('RETURN_VALUE', 83)
-
-def_op('SETUP_ANNOTATIONS', 85)
-
-def_op('POP_EXCEPT', 89)
+from _opcode_metadata import (_specializations, _specialized_opmap, opmap,
+                              HAVE_ARGUMENT, MIN_INSTRUMENTED_OPCODE)
+EXTENDED_ARG = opmap['EXTENDED_ARG']
 
-HAVE_ARGUMENT = 90             # real opcodes from here have an argument:
-
-name_op('STORE_NAME', 90)       # Index in name list
-name_op('DELETE_NAME', 91)      # ""
-def_op('UNPACK_SEQUENCE', 92)   # Number of tuple items
-jrel_op('FOR_ITER', 93)
-def_op('UNPACK_EX', 94)
-name_op('STORE_ATTR', 95)       # Index in name list
-name_op('DELETE_ATTR', 96)      # ""
-name_op('STORE_GLOBAL', 97)     # ""
-name_op('DELETE_GLOBAL', 98)    # ""
-def_op('SWAP', 99)
-def_op('LOAD_CONST', 100)       # Index in const list
-hasconst.append(100)
-name_op('LOAD_NAME', 101)       # Index in name list
-def_op('BUILD_TUPLE', 102)      # Number of tuple items
-def_op('BUILD_LIST', 103)       # Number of list items
-def_op('BUILD_SET', 104)        # Number of set items
-def_op('BUILD_MAP', 105)        # Number of dict entries
-name_op('LOAD_ATTR', 106)       # Index in name list
-def_op('COMPARE_OP', 107)       # Comparison operator
-hascompare.append(107)
-name_op('IMPORT_NAME', 108)     # Index in name list
-name_op('IMPORT_FROM', 109)     # Index in name list
-jrel_op('JUMP_FORWARD', 110)    # Number of words to skip
-jrel_op('POP_JUMP_IF_FALSE', 114)
-jrel_op('POP_JUMP_IF_TRUE', 115)
-name_op('LOAD_GLOBAL', 116)     # Index in name list
-def_op('IS_OP', 117)
-def_op('CONTAINS_OP', 118)
-def_op('RERAISE', 119)
-def_op('COPY', 120)
-def_op('RETURN_CONST', 121)
-hasconst.append(121)
-def_op('BINARY_OP', 122)
-jrel_op('SEND', 123)            # Number of words to skip
-def_op('LOAD_FAST', 124)        # Local variable number, no null check
-haslocal.append(124)
-def_op('STORE_FAST', 125)       # Local variable number
-haslocal.append(125)
-def_op('DELETE_FAST', 126)      # Local variable number
-haslocal.append(126)
-def_op('LOAD_FAST_CHECK', 127)  # Local variable number
-haslocal.append(127)
-jrel_op('POP_JUMP_IF_NOT_NONE', 128)
-jrel_op('POP_JUMP_IF_NONE', 129)
-def_op('RAISE_VARARGS', 130)    # Number of raise arguments (1, 2, or 3)
-def_op('GET_AWAITABLE', 131)
-def_op('MAKE_FUNCTION', 132)    # Flags
-def_op('BUILD_SLICE', 133)      # Number of items
-jrel_op('JUMP_BACKWARD_NO_INTERRUPT', 134) # Number of words to skip (backwards)
-def_op('MAKE_CELL', 135)
-hasfree.append(135)
-def_op('LOAD_CLOSURE', 136)
-hasfree.append(136)
-def_op('LOAD_DEREF', 137)
-hasfree.append(137)
-def_op('STORE_DEREF', 138)
-hasfree.append(138)
-def_op('DELETE_DEREF', 139)
-hasfree.append(139)
-jrel_op('JUMP_BACKWARD', 140)    # Number of words to skip (backwards)
-name_op('LOAD_SUPER_ATTR', 141)
-def_op('CALL_FUNCTION_EX', 142)  # Flags
-def_op('LOAD_FAST_AND_CLEAR', 143)  # Local variable number
-haslocal.append(143)
-
-def_op('EXTENDED_ARG', 144)
-EXTENDED_ARG = 144
-def_op('LIST_APPEND', 145)
-def_op('SET_ADD', 146)
-def_op('MAP_ADD', 147)
-def_op('LOAD_CLASSDEREF', 148)
-hasfree.append(148)
-def_op('COPY_FREE_VARS', 149)
-def_op('YIELD_VALUE', 150)
-def_op('RESUME', 151)   # This must be kept in sync with deepfreeze.py
-def_op('MATCH_CLASS', 152)
-
-def_op('FORMAT_VALUE', 155)
-def_op('BUILD_CONST_KEY_MAP', 156)
-def_op('BUILD_STRING', 157)
-
-def_op('LIST_EXTEND', 162)
-def_op('SET_UPDATE', 163)
-def_op('DICT_MERGE', 164)
-def_op('DICT_UPDATE', 165)
-
-def_op('CALL', 171)
-def_op('KW_NAMES', 172)
-hasconst.append(172)
-def_op('CALL_INTRINSIC_1', 173)
-def_op('CALL_INTRINSIC_2', 174)
-
-# Instrumented instructions
-MIN_INSTRUMENTED_OPCODE = 238
-
-def_op('INSTRUMENTED_POP_JUMP_IF_NONE', 238)
-def_op('INSTRUMENTED_POP_JUMP_IF_NOT_NONE', 239)
-def_op('INSTRUMENTED_RESUME', 240)
-def_op('INSTRUMENTED_CALL', 241)
-def_op('INSTRUMENTED_RETURN_VALUE', 242)
-def_op('INSTRUMENTED_YIELD_VALUE', 243)
-def_op('INSTRUMENTED_CALL_FUNCTION_EX', 244)
-def_op('INSTRUMENTED_JUMP_FORWARD', 245)
-def_op('INSTRUMENTED_JUMP_BACKWARD', 246)
-def_op('INSTRUMENTED_RETURN_CONST', 247)
-def_op('INSTRUMENTED_FOR_ITER', 248)
-def_op('INSTRUMENTED_POP_JUMP_IF_FALSE', 249)
-def_op('INSTRUMENTED_POP_JUMP_IF_TRUE', 250)
-def_op('INSTRUMENTED_END_FOR', 251)
-def_op('INSTRUMENTED_END_SEND', 252)
-def_op('INSTRUMENTED_INSTRUCTION', 253)
-def_op('INSTRUMENTED_LINE', 254)
-# 255 is reserved
-
-hasarg.extend([op for op in opmap.values() if op >= HAVE_ARGUMENT])
-
-MIN_PSEUDO_OPCODE = 256
-
-pseudo_op('SETUP_FINALLY', 256, ['NOP'])
-hasexc.append(256)
-pseudo_op('SETUP_CLEANUP', 257, ['NOP'])
-hasexc.append(257)
-pseudo_op('SETUP_WITH', 258, ['NOP'])
-hasexc.append(258)
-pseudo_op('POP_BLOCK', 259, ['NOP'])
-
-pseudo_op('JUMP', 260, ['JUMP_FORWARD', 'JUMP_BACKWARD'])
-pseudo_op('JUMP_NO_INTERRUPT', 261, ['JUMP_FORWARD', 'JUMP_BACKWARD_NO_INTERRUPT'])
-
-pseudo_op('LOAD_METHOD', 262, ['LOAD_ATTR'])
-pseudo_op('LOAD_SUPER_METHOD', 263, ['LOAD_SUPER_ATTR'])
-pseudo_op('LOAD_ZERO_SUPER_METHOD', 264, ['LOAD_SUPER_ATTR'])
-pseudo_op('LOAD_ZERO_SUPER_ATTR', 265, ['LOAD_SUPER_ATTR'])
-
-pseudo_op('STORE_FAST_MAYBE_NULL', 266, ['STORE_FAST'])
-
-MAX_PSEUDO_OPCODE = MIN_PSEUDO_OPCODE + len(_pseudo_ops) - 1
-
-del def_op, name_op, jrel_op, jabs_op, pseudo_op
-
-opname = ['<%r>' % (op,) for op in range(MAX_PSEUDO_OPCODE + 1)]
+opname = ['<%r>' % (op,) for op in range(max(opmap.values()) + 1)]
 for op, i in opmap.items():
     opname[i] = op
 
+cmp_op = ('<', '<=', '==', '!=', '>', '>=')
 
-_nb_ops = [
-    ("NB_ADD", "+"),
-    ("NB_AND", "&"),
-    ("NB_FLOOR_DIVIDE", "//"),
-    ("NB_LSHIFT", "<<"),
-    ("NB_MATRIX_MULTIPLY", "@"),
-    ("NB_MULTIPLY", "*"),
-    ("NB_REMAINDER", "%"),
-    ("NB_OR", "|"),
-    ("NB_POWER", "**"),
-    ("NB_RSHIFT", ">>"),
-    ("NB_SUBTRACT", "-"),
-    ("NB_TRUE_DIVIDE", "/"),
-    ("NB_XOR", "^"),
-    ("NB_INPLACE_ADD", "+="),
-    ("NB_INPLACE_AND", "&="),
-    ("NB_INPLACE_FLOOR_DIVIDE", "//="),
-    ("NB_INPLACE_LSHIFT", "<<="),
-    ("NB_INPLACE_MATRIX_MULTIPLY", "@="),
-    ("NB_INPLACE_MULTIPLY", "*="),
-    ("NB_INPLACE_REMAINDER", "%="),
-    ("NB_INPLACE_OR", "|="),
-    ("NB_INPLACE_POWER", "**="),
-    ("NB_INPLACE_RSHIFT", ">>="),
-    ("NB_INPLACE_SUBTRACT", "-="),
-    ("NB_INPLACE_TRUE_DIVIDE", "/="),
-    ("NB_INPLACE_XOR", "^="),
-]
+# These lists are documented as part of the dis module's API
+hasarg = [op for op in opmap.values() if _opcode.has_arg(op)]
+hasconst = [op for op in opmap.values() if _opcode.has_const(op)]
+hasname = [op for op in opmap.values() if _opcode.has_name(op)]
+hasjump = [op for op in opmap.values() if _opcode.has_jump(op)]
+hasjrel = hasjump  # for backward compatibility
+hasjabs = []
+hasfree = [op for op in opmap.values() if _opcode.has_free(op)]
+haslocal = [op for op in opmap.values() if _opcode.has_local(op)]
+hasexc = [op for op in opmap.values() if _opcode.has_exc(op)]
 
-_intrinsic_1_descs = [
-    "INTRINSIC_1_INVALID",
-    "INTRINSIC_PRINT",
-    "INTRINSIC_IMPORT_STAR",
-    "INTRINSIC_STOPITERATION_ERROR",
-    "INTRINSIC_ASYNC_GEN_WRAP",
-    "INTRINSIC_UNARY_POSITIVE",
-    "INTRINSIC_LIST_TO_TUPLE",
-]
 
-_intrinsic_2_descs = [
-    'INTRINSIC_2_INVALID',
-    'INTRINSIC_PREP_RERAISE_STAR',
-    ]
+_intrinsic_1_descs = _opcode.get_intrinsic1_descs()
+_intrinsic_2_descs = _opcode.get_intrinsic2_descs()
+_nb_ops = _opcode.get_nb_ops()
 
-_specializations = {
-    "BINARY_OP": [
-        "BINARY_OP_ADD_FLOAT",
-        "BINARY_OP_ADD_INT",
-        "BINARY_OP_ADD_UNICODE",
-        "BINARY_OP_INPLACE_ADD_UNICODE",
-        "BINARY_OP_MULTIPLY_FLOAT",
-        "BINARY_OP_MULTIPLY_INT",
-        "BINARY_OP_SUBTRACT_FLOAT",
-        "BINARY_OP_SUBTRACT_INT",
-    ],
-    "BINARY_SUBSCR": [
-        "BINARY_SUBSCR_DICT",
-        "BINARY_SUBSCR_GETITEM",
-        "BINARY_SUBSCR_LIST_INT",
-        "BINARY_SUBSCR_TUPLE_INT",
-    ],
-    "CALL": [
-        "CALL_PY_EXACT_ARGS",
-        "CALL_PY_WITH_DEFAULTS",
-        "CALL_BOUND_METHOD_EXACT_ARGS",
-        "CALL_BUILTIN_CLASS",
-        "CALL_BUILTIN_FAST_WITH_KEYWORDS",
-        "CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS",
-        "CALL_NO_KW_BUILTIN_FAST",
-        "CALL_NO_KW_BUILTIN_O",
-        "CALL_NO_KW_ISINSTANCE",
-        "CALL_NO_KW_LEN",
-        "CALL_NO_KW_LIST_APPEND",
-        "CALL_NO_KW_METHOD_DESCRIPTOR_FAST",
-        "CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS",
-        "CALL_NO_KW_METHOD_DESCRIPTOR_O",
-        "CALL_NO_KW_STR_1",
-        "CALL_NO_KW_TUPLE_1",
-        "CALL_NO_KW_TYPE_1",
-    ],
-    "COMPARE_OP": [
-        "COMPARE_OP_FLOAT",
-        "COMPARE_OP_INT",
-        "COMPARE_OP_STR",
-    ],
-    "FOR_ITER": [
-        "FOR_ITER_LIST",
-        "FOR_ITER_TUPLE",
-        "FOR_ITER_RANGE",
-        "FOR_ITER_GEN",
-    ],
-    "LOAD_SUPER_ATTR": [
-        "LOAD_SUPER_ATTR_ATTR",
-        "LOAD_SUPER_ATTR_METHOD",
-    ],
-    "LOAD_ATTR": [
-        # These potentially push [NULL, bound method] onto the stack.
-        "LOAD_ATTR_CLASS",
-        "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
-        "LOAD_ATTR_INSTANCE_VALUE",
-        "LOAD_ATTR_MODULE",
-        "LOAD_ATTR_PROPERTY",
-        "LOAD_ATTR_SLOT",
-        "LOAD_ATTR_WITH_HINT",
-        # These will always push [unbound method, self] onto the stack.
-        "LOAD_ATTR_METHOD_LAZY_DICT",
-        "LOAD_ATTR_METHOD_NO_DICT",
-        "LOAD_ATTR_METHOD_WITH_VALUES",
-    ],
-    "LOAD_CONST": [
-        "LOAD_CONST__LOAD_FAST",
-    ],
-    "LOAD_FAST": [
-        "LOAD_FAST__LOAD_CONST",
-        "LOAD_FAST__LOAD_FAST",
-    ],
-    "LOAD_GLOBAL": [
-        "LOAD_GLOBAL_BUILTIN",
-        "LOAD_GLOBAL_MODULE",
-    ],
-    "STORE_ATTR": [
-        "STORE_ATTR_INSTANCE_VALUE",
-        "STORE_ATTR_SLOT",
-        "STORE_ATTR_WITH_HINT",
-    ],
-    "STORE_FAST": [
-        "STORE_FAST__LOAD_FAST",
-        "STORE_FAST__STORE_FAST",
-    ],
-    "STORE_SUBSCR": [
-        "STORE_SUBSCR_DICT",
-        "STORE_SUBSCR_LIST_INT",
-    ],
-    "UNPACK_SEQUENCE": [
-        "UNPACK_SEQUENCE_LIST",
-        "UNPACK_SEQUENCE_TUPLE",
-        "UNPACK_SEQUENCE_TWO_TUPLE",
-    ],
-    "SEND": [
-        "SEND_GEN",
-    ],
-}
-_specialized_instructions = [
-    opcode for family in _specializations.values() for opcode in family
-]
+hascompare = [opmap["COMPARE_OP"]]
 
 _cache_format = {
     "LOAD_GLOBAL": {
@@ -473,8 +86,27 @@ def pseudo_op(name, op, real_ops):
     "SEND": {
         "counter": 1,
     },
+    "JUMP_BACKWARD": {
+        "counter": 1,
+    },
+    "TO_BOOL": {
+        "counter": 1,
+        "version": 2,
+    },
+    "POP_JUMP_IF_TRUE": {
+        "counter": 1,
+    },
+    "POP_JUMP_IF_FALSE": {
+        "counter": 1,
+    },
+    "POP_JUMP_IF_NONE": {
+        "counter": 1,
+    },
+    "POP_JUMP_IF_NOT_NONE": {
+        "counter": 1,
+    },
 }
 
-_inline_cache_entries = [
-    sum(_cache_format.get(opname[opcode], {}).values()) for opcode in range(256)
-]
+_inline_cache_entries = {
+    name : sum(value.values()) for (name, value) in _cache_format.items()
+}
diff --git a/Lib/os.py b/Lib/os.py
index 598c9e502301f7..a17946750ea7e7 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -1061,6 +1061,12 @@ def _fspath(path):
         else:
             raise TypeError("expected str, bytes or os.PathLike object, "
                             "not " + path_type.__name__)
+    except TypeError:
+        if path_type.__fspath__ is None:
+            raise TypeError("expected str, bytes or os.PathLike object, "
+                            "not " + path_type.__name__) from None
+        else:
+            raise
     if isinstance(path_repr, (str, bytes)):
         return path_repr
     else:
@@ -1079,6 +1085,8 @@ class PathLike(abc.ABC):
 
     """Abstract base class for implementing the file system path protocol."""
 
+    __slots__ = ()
+
     @abc.abstractmethod
     def __fspath__(self):
         """Return the file system path representation of the object."""
@@ -1128,3 +1136,17 @@ def add_dll_directory(path):
             cookie,
             nt._remove_dll_directory
         )
+
+
+if _exists('sched_getaffinity') and sys._get_cpu_count_config() < 0:
+    def process_cpu_count():
+        """
+        Get the number of CPUs of the current process.
+
+        Return the number of logical CPUs usable by the calling thread of the
+        current process. Return None if indeterminable.
+        """
+        return len(sched_getaffinity(0))
+else:
+    # Just an alias to cpu_count() (same docstring)
+    process_cpu_count = cpu_count
diff --git a/Lib/pathlib.py b/Lib/pathlib.py
deleted file mode 100644
index 40b72930e1f08a..00000000000000
--- a/Lib/pathlib.py
+++ /dev/null
@@ -1,1356 +0,0 @@
-"""Object-oriented filesystem paths.
-
-This module provides classes to represent abstract paths and concrete
-paths with operations that have semantics appropriate for different
-operating systems.
-"""
-
-import fnmatch
-import functools
-import io
-import ntpath
-import os
-import posixpath
-import re
-import sys
-import warnings
-from _collections_abc import Sequence
-from errno import ENOENT, ENOTDIR, EBADF, ELOOP
-from stat import S_ISDIR, S_ISLNK, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO
-from urllib.parse import quote_from_bytes as urlquote_from_bytes
-
-
-__all__ = [
-    "PurePath", "PurePosixPath", "PureWindowsPath",
-    "Path", "PosixPath", "WindowsPath",
-    ]
-
-#
-# Internals
-#
-
-# Reference for Windows paths can be found at
-# https://learn.microsoft.com/en-gb/windows/win32/fileio/naming-a-file .
-_WIN_RESERVED_NAMES = frozenset(
-    {'CON', 'PRN', 'AUX', 'NUL', 'CONIN$', 'CONOUT$'} |
-    {f'COM{c}' for c in '123456789\xb9\xb2\xb3'} |
-    {f'LPT{c}' for c in '123456789\xb9\xb2\xb3'}
-)
-
-_WINERROR_NOT_READY = 21  # drive exists but is not accessible
-_WINERROR_INVALID_NAME = 123  # fix for bpo-35306
-_WINERROR_CANT_RESOLVE_FILENAME = 1921  # broken symlink pointing to itself
-
-# EBADF - guard against macOS `stat` throwing EBADF
-_IGNORED_ERRNOS = (ENOENT, ENOTDIR, EBADF, ELOOP)
-
-_IGNORED_WINERRORS = (
-    _WINERROR_NOT_READY,
-    _WINERROR_INVALID_NAME,
-    _WINERROR_CANT_RESOLVE_FILENAME)
-
-def _ignore_error(exception):
-    return (getattr(exception, 'errno', None) in _IGNORED_ERRNOS or
-            getattr(exception, 'winerror', None) in _IGNORED_WINERRORS)
-
-
-def _is_case_sensitive(flavour):
-    return flavour.normcase('Aa') == 'Aa'
-
-#
-# Globbing helpers
-#
-
-@functools.lru_cache()
-def _make_selector(pattern_parts, flavour, case_sensitive):
-    pat = pattern_parts[0]
-    if not pat:
-        return _TerminatingSelector()
-    if pat == '**':
-        child_parts_idx = 1
-        while child_parts_idx < len(pattern_parts) and pattern_parts[child_parts_idx] == '**':
-            child_parts_idx += 1
-        child_parts = pattern_parts[child_parts_idx:]
-        if '**' in child_parts:
-            cls = _DoubleRecursiveWildcardSelector
-        else:
-            cls = _RecursiveWildcardSelector
-    else:
-        child_parts = pattern_parts[1:]
-        if pat == '..':
-            cls = _ParentSelector
-        elif '**' in pat:
-            raise ValueError("Invalid pattern: '**' can only be an entire path component")
-        else:
-            cls = _WildcardSelector
-    return cls(pat, child_parts, flavour, case_sensitive)
-
-
-class _Selector:
-    """A selector matches a specific glob pattern part against the children
-    of a given path."""
-
-    def __init__(self, child_parts, flavour, case_sensitive):
-        self.child_parts = child_parts
-        if child_parts:
-            self.successor = _make_selector(child_parts, flavour, case_sensitive)
-            self.dironly = True
-        else:
-            self.successor = _TerminatingSelector()
-            self.dironly = False
-
-    def select_from(self, parent_path):
-        """Iterate over all child paths of `parent_path` matched by this
-        selector.  This can contain parent_path itself."""
-        path_cls = type(parent_path)
-        scandir = path_cls._scandir
-        if not parent_path.is_dir():
-            return iter([])
-        return self._select_from(parent_path, scandir)
-
-
-class _TerminatingSelector:
-
-    def _select_from(self, parent_path, scandir):
-        yield parent_path
-
-
-class _ParentSelector(_Selector):
-
-    def __init__(self, name, child_parts, flavour, case_sensitive):
-        _Selector.__init__(self, child_parts, flavour, case_sensitive)
-
-    def _select_from(self,  parent_path, scandir):
-        path = parent_path._make_child_relpath('..')
-        for p in self.successor._select_from(path, scandir):
-            yield p
-
-
-class _WildcardSelector(_Selector):
-
-    def __init__(self, pat, child_parts, flavour, case_sensitive):
-        _Selector.__init__(self, child_parts, flavour, case_sensitive)
-        if case_sensitive is None:
-            # TODO: evaluate case-sensitivity of each directory in _select_from()
-            case_sensitive = _is_case_sensitive(flavour)
-        flags = re.NOFLAG if case_sensitive else re.IGNORECASE
-        self.match = re.compile(fnmatch.translate(pat), flags=flags).fullmatch
-
-    def _select_from(self, parent_path, scandir):
-        try:
-            # We must close the scandir() object before proceeding to
-            # avoid exhausting file descriptors when globbing deep trees.
-            with scandir(parent_path) as scandir_it:
-                entries = list(scandir_it)
-        except OSError:
-            pass
-        else:
-            for entry in entries:
-                if self.dironly:
-                    try:
-                        if not entry.is_dir():
-                            continue
-                    except OSError:
-                        continue
-                name = entry.name
-                if self.match(name):
-                    path = parent_path._make_child_relpath(name)
-                    for p in self.successor._select_from(path, scandir):
-                        yield p
-
-
-class _RecursiveWildcardSelector(_Selector):
-
-    def __init__(self, pat, child_parts, flavour, case_sensitive):
-        _Selector.__init__(self, child_parts, flavour, case_sensitive)
-
-    def _iterate_directories(self, parent_path, scandir):
-        yield parent_path
-        try:
-            # We must close the scandir() object before proceeding to
-            # avoid exhausting file descriptors when globbing deep trees.
-            with scandir(parent_path) as scandir_it:
-                entries = list(scandir_it)
-        except OSError:
-            pass
-        else:
-            for entry in entries:
-                entry_is_dir = False
-                try:
-                    entry_is_dir = entry.is_dir(follow_symlinks=False)
-                except OSError:
-                    pass
-                if entry_is_dir:
-                    path = parent_path._make_child_relpath(entry.name)
-                    for p in self._iterate_directories(path, scandir):
-                        yield p
-
-    def _select_from(self, parent_path, scandir):
-        successor_select = self.successor._select_from
-        for starting_point in self._iterate_directories(parent_path, scandir):
-            for p in successor_select(starting_point, scandir):
-                yield p
-
-
-class _DoubleRecursiveWildcardSelector(_RecursiveWildcardSelector):
-    """
-    Like _RecursiveWildcardSelector, but also de-duplicates results from
-    successive selectors. This is necessary if the pattern contains
-    multiple non-adjacent '**' segments.
-    """
-
-    def _select_from(self, parent_path, scandir):
-        yielded = set()
-        try:
-            for p in super()._select_from(parent_path, scandir):
-                if p not in yielded:
-                    yield p
-                    yielded.add(p)
-        finally:
-            yielded.clear()
-
-
-#
-# Public API
-#
-
-class _PathParents(Sequence):
-    """This object provides sequence-like access to the logical ancestors
-    of a path.  Don't try to construct it yourself."""
-    __slots__ = ('_path', '_drv', '_root', '_tail')
-
-    def __init__(self, path):
-        self._path = path
-        self._drv = path.drive
-        self._root = path.root
-        self._tail = path._tail
-
-    def __len__(self):
-        return len(self._tail)
-
-    def __getitem__(self, idx):
-        if isinstance(idx, slice):
-            return tuple(self[i] for i in range(*idx.indices(len(self))))
-
-        if idx >= len(self) or idx < -len(self):
-            raise IndexError(idx)
-        if idx < 0:
-            idx += len(self)
-        return self._path._from_parsed_parts(self._drv, self._root,
-                                             self._tail[:-idx - 1])
-
-    def __repr__(self):
-        return "<{}.parents>".format(type(self._path).__name__)
-
-
-class PurePath(object):
-    """Base class for manipulating paths without I/O.
-
-    PurePath represents a filesystem path and offers operations which
-    don't imply any actual filesystem I/O.  Depending on your system,
-    instantiating a PurePath will return either a PurePosixPath or a
-    PureWindowsPath object.  You can also instantiate either of these classes
-    directly, regardless of your system.
-    """
-
-    __slots__ = (
-        # The `_raw_path` slot stores an unnormalized string path. This is set
-        # in the `__init__()` method.
-        '_raw_path',
-
-        # The `_drv`, `_root` and `_tail_cached` slots store parsed and
-        # normalized parts of the path. They are set when any of the `drive`,
-        # `root` or `_tail` properties are accessed for the first time. The
-        # three-part division corresponds to the result of
-        # `os.path.splitroot()`, except that the tail is further split on path
-        # separators (i.e. it is a list of strings), and that the root and
-        # tail are normalized.
-        '_drv', '_root', '_tail_cached',
-
-        # The `_str` slot stores the string representation of the path,
-        # computed from the drive, root and tail when `__str__()` is called
-        # for the first time. It's used to implement `_str_normcase`
-        '_str',
-
-        # The `_str_normcase_cached` slot stores the string path with
-        # normalized case. It is set when the `_str_normcase` property is
-        # accessed for the first time. It's used to implement `__eq__()`
-        # `__hash__()`, and `_parts_normcase`
-        '_str_normcase_cached',
-
-        # The `_parts_normcase_cached` slot stores the case-normalized
-        # string path after splitting on path separators. It's set when the
-        # `_parts_normcase` property is accessed for the first time. It's used
-        # to implement comparison methods like `__lt__()`.
-        '_parts_normcase_cached',
-
-        # The `_hash` slot stores the hash of the case-normalized string
-        # path. It's set when `__hash__()` is called for the first time.
-        '_hash',
-    )
-    _flavour = os.path
-
-    def __new__(cls, *args, **kwargs):
-        """Construct a PurePath from one or several strings and or existing
-        PurePath objects.  The strings and path objects are combined so as
-        to yield a canonicalized path, which is incorporated into the
-        new PurePath object.
-        """
-        if cls is PurePath:
-            cls = PureWindowsPath if os.name == 'nt' else PurePosixPath
-        return object.__new__(cls)
-
-    def __reduce__(self):
-        # Using the parts tuple helps share interned path parts
-        # when pickling related paths.
-        return (self.__class__, self.parts)
-
-    def __init__(self, *args):
-        paths = []
-        for arg in args:
-            if isinstance(arg, PurePath):
-                path = arg._raw_path
-            else:
-                try:
-                    path = os.fspath(arg)
-                except TypeError:
-                    path = arg
-                if not isinstance(path, str):
-                    raise TypeError(
-                        "argument should be a str or an os.PathLike "
-                        "object where __fspath__ returns a str, "
-                        f"not {type(path).__name__!r}")
-            paths.append(path)
-        if len(paths) == 0:
-            self._raw_path = ''
-        elif len(paths) == 1:
-            self._raw_path = paths[0]
-        else:
-            self._raw_path = self._flavour.join(*paths)
-
-    def with_segments(self, *pathsegments):
-        """Construct a new path object from any number of path-like objects.
-        Subclasses may override this method to customize how new path objects
-        are created from methods like `iterdir()`.
-        """
-        return type(self)(*pathsegments)
-
-    @classmethod
-    def _parse_path(cls, path):
-        if not path:
-            return '', '', []
-        sep = cls._flavour.sep
-        altsep = cls._flavour.altsep
-        if altsep:
-            path = path.replace(altsep, sep)
-        drv, root, rel = cls._flavour.splitroot(path)
-        if not root and drv.startswith(sep) and not drv.endswith(sep):
-            drv_parts = drv.split(sep)
-            if len(drv_parts) == 4 and drv_parts[2] not in '?.':
-                # e.g. //server/share
-                root = sep
-            elif len(drv_parts) == 6:
-                # e.g. //?/unc/server/share
-                root = sep
-        parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.']
-        return drv, root, parsed
-
-    def _load_parts(self):
-        drv, root, tail = self._parse_path(self._raw_path)
-        self._drv = drv
-        self._root = root
-        self._tail_cached = tail
-
-    def _from_parsed_parts(self, drv, root, tail):
-        path_str = self._format_parsed_parts(drv, root, tail)
-        path = self.with_segments(path_str)
-        path._str = path_str or '.'
-        path._drv = drv
-        path._root = root
-        path._tail_cached = tail
-        return path
-
-    @classmethod
-    def _format_parsed_parts(cls, drv, root, tail):
-        if drv or root:
-            return drv + root + cls._flavour.sep.join(tail)
-        elif tail and cls._flavour.splitdrive(tail[0])[0]:
-            tail = ['.'] + tail
-        return cls._flavour.sep.join(tail)
-
-    def __str__(self):
-        """Return the string representation of the path, suitable for
-        passing to system calls."""
-        try:
-            return self._str
-        except AttributeError:
-            self._str = self._format_parsed_parts(self.drive, self.root,
-                                                  self._tail) or '.'
-            return self._str
-
-    def __fspath__(self):
-        return str(self)
-
-    def as_posix(self):
-        """Return the string representation of the path with forward (/)
-        slashes."""
-        f = self._flavour
-        return str(self).replace(f.sep, '/')
-
-    def __bytes__(self):
-        """Return the bytes representation of the path.  This is only
-        recommended to use under Unix."""
-        return os.fsencode(self)
-
-    def __repr__(self):
-        return "{}({!r})".format(self.__class__.__name__, self.as_posix())
-
-    def as_uri(self):
-        """Return the path as a 'file' URI."""
-        if not self.is_absolute():
-            raise ValueError("relative path can't be expressed as a file URI")
-
-        drive = self.drive
-        if len(drive) == 2 and drive[1] == ':':
-            # It's a path on a local drive => 'file:///c:/a/b'
-            prefix = 'file:///' + drive
-            path = self.as_posix()[2:]
-        elif drive:
-            # It's a path on a network drive => 'file://host/share/a/b'
-            prefix = 'file:'
-            path = self.as_posix()
-        else:
-            # It's a posix path => 'file:///etc/hosts'
-            prefix = 'file://'
-            path = str(self)
-        return prefix + urlquote_from_bytes(os.fsencode(path))
-
-    @property
-    def _str_normcase(self):
-        # String with normalized case, for hashing and equality checks
-        try:
-            return self._str_normcase_cached
-        except AttributeError:
-            self._str_normcase_cached = self._flavour.normcase(str(self))
-            return self._str_normcase_cached
-
-    @property
-    def _parts_normcase(self):
-        # Cached parts with normalized case, for comparisons.
-        try:
-            return self._parts_normcase_cached
-        except AttributeError:
-            self._parts_normcase_cached = self._str_normcase.split(self._flavour.sep)
-            return self._parts_normcase_cached
-
-    def __eq__(self, other):
-        if not isinstance(other, PurePath):
-            return NotImplemented
-        return self._str_normcase == other._str_normcase and self._flavour is other._flavour
-
-    def __hash__(self):
-        try:
-            return self._hash
-        except AttributeError:
-            self._hash = hash(self._str_normcase)
-            return self._hash
-
-    def __lt__(self, other):
-        if not isinstance(other, PurePath) or self._flavour is not other._flavour:
-            return NotImplemented
-        return self._parts_normcase < other._parts_normcase
-
-    def __le__(self, other):
-        if not isinstance(other, PurePath) or self._flavour is not other._flavour:
-            return NotImplemented
-        return self._parts_normcase <= other._parts_normcase
-
-    def __gt__(self, other):
-        if not isinstance(other, PurePath) or self._flavour is not other._flavour:
-            return NotImplemented
-        return self._parts_normcase > other._parts_normcase
-
-    def __ge__(self, other):
-        if not isinstance(other, PurePath) or self._flavour is not other._flavour:
-            return NotImplemented
-        return self._parts_normcase >= other._parts_normcase
-
-    @property
-    def drive(self):
-        """The drive prefix (letter or UNC path), if any."""
-        try:
-            return self._drv
-        except AttributeError:
-            self._load_parts()
-            return self._drv
-
-    @property
-    def root(self):
-        """The root of the path, if any."""
-        try:
-            return self._root
-        except AttributeError:
-            self._load_parts()
-            return self._root
-
-    @property
-    def _tail(self):
-        try:
-            return self._tail_cached
-        except AttributeError:
-            self._load_parts()
-            return self._tail_cached
-
-    @property
-    def anchor(self):
-        """The concatenation of the drive and root, or ''."""
-        anchor = self.drive + self.root
-        return anchor
-
-    @property
-    def name(self):
-        """The final path component, if any."""
-        tail = self._tail
-        if not tail:
-            return ''
-        return tail[-1]
-
-    @property
-    def suffix(self):
-        """
-        The final component's last suffix, if any.
-
-        This includes the leading period. For example: '.txt'
-        """
-        name = self.name
-        i = name.rfind('.')
-        if 0 < i < len(name) - 1:
-            return name[i:]
-        else:
-            return ''
-
-    @property
-    def suffixes(self):
-        """
-        A list of the final component's suffixes, if any.
-
-        These include the leading periods. For example: ['.tar', '.gz']
-        """
-        name = self.name
-        if name.endswith('.'):
-            return []
-        name = name.lstrip('.')
-        return ['.' + suffix for suffix in name.split('.')[1:]]
-
-    @property
-    def stem(self):
-        """The final path component, minus its last suffix."""
-        name = self.name
-        i = name.rfind('.')
-        if 0 < i < len(name) - 1:
-            return name[:i]
-        else:
-            return name
-
-    def with_name(self, name):
-        """Return a new path with the file name changed."""
-        if not self.name:
-            raise ValueError("%r has an empty name" % (self,))
-        f = self._flavour
-        drv, root, tail = f.splitroot(name)
-        if drv or root or not tail or f.sep in tail or (f.altsep and f.altsep in tail):
-            raise ValueError("Invalid name %r" % (name))
-        return self._from_parsed_parts(self.drive, self.root,
-                                       self._tail[:-1] + [name])
-
-    def with_stem(self, stem):
-        """Return a new path with the stem changed."""
-        return self.with_name(stem + self.suffix)
-
-    def with_suffix(self, suffix):
-        """Return a new path with the file suffix changed.  If the path
-        has no suffix, add given suffix.  If the given suffix is an empty
-        string, remove the suffix from the path.
-        """
-        f = self._flavour
-        if f.sep in suffix or f.altsep and f.altsep in suffix:
-            raise ValueError("Invalid suffix %r" % (suffix,))
-        if suffix and not suffix.startswith('.') or suffix == '.':
-            raise ValueError("Invalid suffix %r" % (suffix))
-        name = self.name
-        if not name:
-            raise ValueError("%r has an empty name" % (self,))
-        old_suffix = self.suffix
-        if not old_suffix:
-            name = name + suffix
-        else:
-            name = name[:-len(old_suffix)] + suffix
-        return self._from_parsed_parts(self.drive, self.root,
-                                       self._tail[:-1] + [name])
-
-    def relative_to(self, other, /, *_deprecated, walk_up=False):
-        """Return the relative path to another path identified by the passed
-        arguments.  If the operation is not possible (because this is not
-        related to the other path), raise ValueError.
-
-        The *walk_up* parameter controls whether `..` may be used to resolve
-        the path.
-        """
-        if _deprecated:
-            msg = ("support for supplying more than one positional argument "
-                   "to pathlib.PurePath.relative_to() is deprecated and "
-                   "scheduled for removal in Python {remove}")
-            warnings._deprecated("pathlib.PurePath.relative_to(*args)", msg,
-                                 remove=(3, 14))
-        other = self.with_segments(other, *_deprecated)
-        for step, path in enumerate([other] + list(other.parents)):
-            if self.is_relative_to(path):
-                break
-        else:
-            raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors")
-        if step and not walk_up:
-            raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}")
-        parts = ['..'] * step + self._tail[len(path._tail):]
-        return self.with_segments(*parts)
-
-    def is_relative_to(self, other, /, *_deprecated):
-        """Return True if the path is relative to another path or False.
-        """
-        if _deprecated:
-            msg = ("support for supplying more than one argument to "
-                   "pathlib.PurePath.is_relative_to() is deprecated and "
-                   "scheduled for removal in Python {remove}")
-            warnings._deprecated("pathlib.PurePath.is_relative_to(*args)",
-                                 msg, remove=(3, 14))
-        other = self.with_segments(other, *_deprecated)
-        return other == self or other in self.parents
-
-    @property
-    def parts(self):
-        """An object providing sequence-like access to the
-        components in the filesystem path."""
-        if self.drive or self.root:
-            return (self.drive + self.root,) + tuple(self._tail)
-        else:
-            return tuple(self._tail)
-
-    def joinpath(self, *pathsegments):
-        """Combine this path with one or several arguments, and return a
-        new path representing either a subpath (if all arguments are relative
-        paths) or a totally different path (if one of the arguments is
-        anchored).
-        """
-        return self.with_segments(self, *pathsegments)
-
-    def __truediv__(self, key):
-        try:
-            return self.joinpath(key)
-        except TypeError:
-            return NotImplemented
-
-    def __rtruediv__(self, key):
-        try:
-            return self.with_segments(key, self)
-        except TypeError:
-            return NotImplemented
-
-    @property
-    def parent(self):
-        """The logical parent of the path."""
-        drv = self.drive
-        root = self.root
-        tail = self._tail
-        if not tail:
-            return self
-        return self._from_parsed_parts(drv, root, tail[:-1])
-
-    @property
-    def parents(self):
-        """A sequence of this path's logical parents."""
-        # The value of this property should not be cached on the path object,
-        # as doing so would introduce a reference cycle.
-        return _PathParents(self)
-
-    def is_absolute(self):
-        """True if the path is absolute (has both a root and, if applicable,
-        a drive)."""
-        # ntpath.isabs() is defective - see GH-44626 .
-        if self._flavour is ntpath:
-            return bool(self.drive and self.root)
-        return self._flavour.isabs(self._raw_path)
-
-    def is_reserved(self):
-        """Return True if the path contains one of the special names reserved
-        by the system, if any."""
-        if self._flavour is posixpath or not self._tail:
-            return False
-
-        # NOTE: the rules for reserved names seem somewhat complicated
-        # (e.g. r"..\NUL" is reserved but not r"foo\NUL" if "foo" does not
-        # exist). We err on the side of caution and return True for paths
-        # which are not considered reserved by Windows.
-        if self.drive.startswith('\\\\'):
-            # UNC paths are never reserved.
-            return False
-        name = self._tail[-1].partition('.')[0].partition(':')[0].rstrip(' ')
-        return name.upper() in _WIN_RESERVED_NAMES
-
-    def match(self, path_pattern):
-        """
-        Return True if this path matches the given pattern.
-        """
-        pat = self.with_segments(path_pattern)
-        if not pat.parts:
-            raise ValueError("empty pattern")
-        pat_parts = pat._parts_normcase
-        parts = self._parts_normcase
-        if pat.drive or pat.root:
-            if len(pat_parts) != len(parts):
-                return False
-        elif len(pat_parts) > len(parts):
-            return False
-        for part, pat in zip(reversed(parts), reversed(pat_parts)):
-            if not fnmatch.fnmatchcase(part, pat):
-                return False
-        return True
-
-# Can't subclass os.PathLike from PurePath and keep the constructor
-# optimizations in PurePath.__slots__.
-os.PathLike.register(PurePath)
-
-
-class PurePosixPath(PurePath):
-    """PurePath subclass for non-Windows systems.
-
-    On a POSIX system, instantiating a PurePath should return this object.
-    However, you can also instantiate it directly on any system.
-    """
-    _flavour = posixpath
-    __slots__ = ()
-
-
-class PureWindowsPath(PurePath):
-    """PurePath subclass for Windows systems.
-
-    On a Windows system, instantiating a PurePath should return this object.
-    However, you can also instantiate it directly on any system.
-    """
-    _flavour = ntpath
-    __slots__ = ()
-
-
-# Filesystem-accessing classes
-
-
-class Path(PurePath):
-    """PurePath subclass that can make system calls.
-
-    Path represents a filesystem path but unlike PurePath, also offers
-    methods to do system calls on path objects. Depending on your system,
-    instantiating a Path will return either a PosixPath or a WindowsPath
-    object. You can also instantiate a PosixPath or WindowsPath directly,
-    but cannot instantiate a WindowsPath on a POSIX system or vice versa.
-    """
-    __slots__ = ()
-
-    def stat(self, *, follow_symlinks=True):
-        """
-        Return the result of the stat() system call on this path, like
-        os.stat() does.
-        """
-        return os.stat(self, follow_symlinks=follow_symlinks)
-
-    def lstat(self):
-        """
-        Like stat(), except if the path points to a symlink, the symlink's
-        status information is returned, rather than its target's.
-        """
-        return self.stat(follow_symlinks=False)
-
-
-    # Convenience functions for querying the stat results
-
-    def exists(self, *, follow_symlinks=True):
-        """
-        Whether this path exists.
-
-        This method normally follows symlinks; to check whether a symlink exists,
-        add the argument follow_symlinks=False.
-        """
-        try:
-            self.stat(follow_symlinks=follow_symlinks)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-        return True
-
-    def is_dir(self):
-        """
-        Whether this path is a directory.
-        """
-        try:
-            return S_ISDIR(self.stat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist or is a broken symlink
-            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def is_file(self):
-        """
-        Whether this path is a regular file (also True for symlinks pointing
-        to regular files).
-        """
-        try:
-            return S_ISREG(self.stat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist or is a broken symlink
-            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def is_mount(self):
-        """
-        Check if this path is a mount point
-        """
-        return self._flavour.ismount(self)
-
-    def is_symlink(self):
-        """
-        Whether this path is a symbolic link.
-        """
-        try:
-            return S_ISLNK(self.lstat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def is_junction(self):
-        """
-        Whether this path is a junction.
-        """
-        return self._flavour.isjunction(self)
-
-    def is_block_device(self):
-        """
-        Whether this path is a block device.
-        """
-        try:
-            return S_ISBLK(self.stat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist or is a broken symlink
-            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def is_char_device(self):
-        """
-        Whether this path is a character device.
-        """
-        try:
-            return S_ISCHR(self.stat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist or is a broken symlink
-            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def is_fifo(self):
-        """
-        Whether this path is a FIFO.
-        """
-        try:
-            return S_ISFIFO(self.stat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist or is a broken symlink
-            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def is_socket(self):
-        """
-        Whether this path is a socket.
-        """
-        try:
-            return S_ISSOCK(self.stat().st_mode)
-        except OSError as e:
-            if not _ignore_error(e):
-                raise
-            # Path doesn't exist or is a broken symlink
-            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
-            return False
-        except ValueError:
-            # Non-encodable path
-            return False
-
-    def samefile(self, other_path):
-        """Return whether other_path is the same or not as this file
-        (as returned by os.path.samefile()).
-        """
-        st = self.stat()
-        try:
-            other_st = other_path.stat()
-        except AttributeError:
-            other_st = self.with_segments(other_path).stat()
-        return self._flavour.samestat(st, other_st)
-
-    def open(self, mode='r', buffering=-1, encoding=None,
-             errors=None, newline=None):
-        """
-        Open the file pointed by this path and return a file object, as
-        the built-in open() function does.
-        """
-        if "b" not in mode:
-            encoding = io.text_encoding(encoding)
-        return io.open(self, mode, buffering, encoding, errors, newline)
-
-    def read_bytes(self):
-        """
-        Open the file in bytes mode, read it, and close the file.
-        """
-        with self.open(mode='rb') as f:
-            return f.read()
-
-    def read_text(self, encoding=None, errors=None):
-        """
-        Open the file in text mode, read it, and close the file.
-        """
-        encoding = io.text_encoding(encoding)
-        with self.open(mode='r', encoding=encoding, errors=errors) as f:
-            return f.read()
-
-    def write_bytes(self, data):
-        """
-        Open the file in bytes mode, write to it, and close the file.
-        """
-        # type-check for the buffer interface before truncating the file
-        view = memoryview(data)
-        with self.open(mode='wb') as f:
-            return f.write(view)
-
-    def write_text(self, data, encoding=None, errors=None, newline=None):
-        """
-        Open the file in text mode, write to it, and close the file.
-        """
-        if not isinstance(data, str):
-            raise TypeError('data must be str, not %s' %
-                            data.__class__.__name__)
-        encoding = io.text_encoding(encoding)
-        with self.open(mode='w', encoding=encoding, errors=errors, newline=newline) as f:
-            return f.write(data)
-
-    def iterdir(self):
-        """Yield path objects of the directory contents.
-
-        The children are yielded in arbitrary order, and the
-        special entries '.' and '..' are not included.
-        """
-        for name in os.listdir(self):
-            yield self._make_child_relpath(name)
-
-    def _scandir(self):
-        # bpo-24132: a future version of pathlib will support subclassing of
-        # pathlib.Path to customize how the filesystem is accessed. This
-        # includes scandir(), which is used to implement glob().
-        return os.scandir(self)
-
-    def _make_child_relpath(self, name):
-        path_str = str(self)
-        tail = self._tail
-        if tail:
-            path_str = f'{path_str}{self._flavour.sep}{name}'
-        elif path_str != '.':
-            path_str = f'{path_str}{name}'
-        else:
-            path_str = name
-        path = self.with_segments(path_str)
-        path._str = path_str
-        path._drv = self.drive
-        path._root = self.root
-        path._tail_cached = tail + [name]
-        return path
-
-    def glob(self, pattern, *, case_sensitive=None):
-        """Iterate over this subtree and yield all existing files (of any
-        kind, including directories) matching the given relative pattern.
-        """
-        sys.audit("pathlib.Path.glob", self, pattern)
-        if not pattern:
-            raise ValueError("Unacceptable pattern: {!r}".format(pattern))
-        drv, root, pattern_parts = self._parse_path(pattern)
-        if drv or root:
-            raise NotImplementedError("Non-relative patterns are unsupported")
-        if pattern[-1] in (self._flavour.sep, self._flavour.altsep):
-            pattern_parts.append('')
-        selector = _make_selector(tuple(pattern_parts), self._flavour, case_sensitive)
-        for p in selector.select_from(self):
-            yield p
-
-    def rglob(self, pattern, *, case_sensitive=None):
-        """Recursively yield all existing files (of any kind, including
-        directories) matching the given relative pattern, anywhere in
-        this subtree.
-        """
-        sys.audit("pathlib.Path.rglob", self, pattern)
-        drv, root, pattern_parts = self._parse_path(pattern)
-        if drv or root:
-            raise NotImplementedError("Non-relative patterns are unsupported")
-        if pattern and pattern[-1] in (self._flavour.sep, self._flavour.altsep):
-            pattern_parts.append('')
-        selector = _make_selector(("**",) + tuple(pattern_parts), self._flavour, case_sensitive)
-        for p in selector.select_from(self):
-            yield p
-
-    def walk(self, top_down=True, on_error=None, follow_symlinks=False):
-        """Walk the directory tree from this directory, similar to os.walk()."""
-        sys.audit("pathlib.Path.walk", self, on_error, follow_symlinks)
-        paths = [self]
-
-        while paths:
-            path = paths.pop()
-            if isinstance(path, tuple):
-                yield path
-                continue
-
-            # We may not have read permission for self, in which case we can't
-            # get a list of the files the directory contains. os.walk()
-            # always suppressed the exception in that instance, rather than
-            # blow up for a minor reason when (say) a thousand readable
-            # directories are still left to visit. That logic is copied here.
-            try:
-                scandir_it = path._scandir()
-            except OSError as error:
-                if on_error is not None:
-                    on_error(error)
-                continue
-
-            with scandir_it:
-                dirnames = []
-                filenames = []
-                for entry in scandir_it:
-                    try:
-                        is_dir = entry.is_dir(follow_symlinks=follow_symlinks)
-                    except OSError:
-                        # Carried over from os.path.isdir().
-                        is_dir = False
-
-                    if is_dir:
-                        dirnames.append(entry.name)
-                    else:
-                        filenames.append(entry.name)
-
-            if top_down:
-                yield path, dirnames, filenames
-            else:
-                paths.append((path, dirnames, filenames))
-
-            paths += [path._make_child_relpath(d) for d in reversed(dirnames)]
-
-    def __init__(self, *args, **kwargs):
-        if kwargs:
-            msg = ("support for supplying keyword arguments to pathlib.PurePath "
-                   "is deprecated and scheduled for removal in Python {remove}")
-            warnings._deprecated("pathlib.PurePath(**kwargs)", msg, remove=(3, 14))
-        super().__init__(*args)
-
-    def __new__(cls, *args, **kwargs):
-        if cls is Path:
-            cls = WindowsPath if os.name == 'nt' else PosixPath
-        return object.__new__(cls)
-
-    def __enter__(self):
-        # In previous versions of pathlib, __exit__() marked this path as
-        # closed; subsequent attempts to perform I/O would raise an IOError.
-        # This functionality was never documented, and had the effect of
-        # making Path objects mutable, contrary to PEP 428.
-        # In Python 3.9 __exit__() was made a no-op.
-        # In Python 3.11 __enter__() began emitting DeprecationWarning.
-        # In Python 3.13 __enter__() and __exit__() should be removed.
-        warnings.warn("pathlib.Path.__enter__() is deprecated and scheduled "
-                      "for removal in Python 3.13; Path objects as a context "
-                      "manager is a no-op",
-                      DeprecationWarning, stacklevel=2)
-        return self
-
-    def __exit__(self, t, v, tb):
-        pass
-
-    # Public API
-
-    @classmethod
-    def cwd(cls):
-        """Return a new path pointing to the current working directory."""
-        # We call 'absolute()' rather than using 'os.getcwd()' directly to
-        # enable users to replace the implementation of 'absolute()' in a
-        # subclass and benefit from the new behaviour here. This works because
-        # os.path.abspath('.') == os.getcwd().
-        return cls().absolute()
-
-    @classmethod
-    def home(cls):
-        """Return a new path pointing to the user's home directory (as
-        returned by os.path.expanduser('~')).
-        """
-        return cls("~").expanduser()
-
-    def absolute(self):
-        """Return an absolute version of this path by prepending the current
-        working directory. No normalization or symlink resolution is performed.
-
-        Use resolve() to get the canonical path to a file.
-        """
-        if self.is_absolute():
-            return self
-        elif self.drive:
-            # There is a CWD on each drive-letter drive.
-            cwd = self._flavour.abspath(self.drive)
-        else:
-            cwd = os.getcwd()
-            # Fast path for "empty" paths, e.g. Path("."), Path("") or Path().
-            # We pass only one argument to with_segments() to avoid the cost
-            # of joining, and we exploit the fact that getcwd() returns a
-            # fully-normalized string by storing it in _str. This is used to
-            # implement Path.cwd().
-            if not self.root and not self._tail:
-                result = self.with_segments(cwd)
-                result._str = cwd
-                return result
-        return self.with_segments(cwd, self)
-
-    def resolve(self, strict=False):
-        """
-        Make the path absolute, resolving all symlinks on the way and also
-        normalizing it.
-        """
-
-        def check_eloop(e):
-            winerror = getattr(e, 'winerror', 0)
-            if e.errno == ELOOP or winerror == _WINERROR_CANT_RESOLVE_FILENAME:
-                raise RuntimeError("Symlink loop from %r" % e.filename)
-
-        try:
-            s = self._flavour.realpath(self, strict=strict)
-        except OSError as e:
-            check_eloop(e)
-            raise
-        p = self.with_segments(s)
-
-        # In non-strict mode, realpath() doesn't raise on symlink loops.
-        # Ensure we get an exception by calling stat()
-        if not strict:
-            try:
-                p.stat()
-            except OSError as e:
-                check_eloop(e)
-        return p
-
-    def owner(self):
-        """
-        Return the login name of the file owner.
-        """
-        try:
-            import pwd
-            return pwd.getpwuid(self.stat().st_uid).pw_name
-        except ImportError:
-            raise NotImplementedError("Path.owner() is unsupported on this system")
-
-    def group(self):
-        """
-        Return the group name of the file gid.
-        """
-
-        try:
-            import grp
-            return grp.getgrgid(self.stat().st_gid).gr_name
-        except ImportError:
-            raise NotImplementedError("Path.group() is unsupported on this system")
-
-    def readlink(self):
-        """
-        Return the path to which the symbolic link points.
-        """
-        if not hasattr(os, "readlink"):
-            raise NotImplementedError("os.readlink() not available on this system")
-        return self.with_segments(os.readlink(self))
-
-    def touch(self, mode=0o666, exist_ok=True):
-        """
-        Create this file with the given access mode, if it doesn't exist.
-        """
-
-        if exist_ok:
-            # First try to bump modification time
-            # Implementation note: GNU touch uses the UTIME_NOW option of
-            # the utimensat() / futimens() functions.
-            try:
-                os.utime(self, None)
-            except OSError:
-                # Avoid exception chaining
-                pass
-            else:
-                return
-        flags = os.O_CREAT | os.O_WRONLY
-        if not exist_ok:
-            flags |= os.O_EXCL
-        fd = os.open(self, flags, mode)
-        os.close(fd)
-
-    def mkdir(self, mode=0o777, parents=False, exist_ok=False):
-        """
-        Create a new directory at this given path.
-        """
-        try:
-            os.mkdir(self, mode)
-        except FileNotFoundError:
-            if not parents or self.parent == self:
-                raise
-            self.parent.mkdir(parents=True, exist_ok=True)
-            self.mkdir(mode, parents=False, exist_ok=exist_ok)
-        except OSError:
-            # Cannot rely on checking for EEXIST, since the operating system
-            # could give priority to other errors like EACCES or EROFS
-            if not exist_ok or not self.is_dir():
-                raise
-
-    def chmod(self, mode, *, follow_symlinks=True):
-        """
-        Change the permissions of the path, like os.chmod().
-        """
-        os.chmod(self, mode, follow_symlinks=follow_symlinks)
-
-    def lchmod(self, mode):
-        """
-        Like chmod(), except if the path points to a symlink, the symlink's
-        permissions are changed, rather than its target's.
-        """
-        self.chmod(mode, follow_symlinks=False)
-
-    def unlink(self, missing_ok=False):
-        """
-        Remove this file or link.
-        If the path is a directory, use rmdir() instead.
-        """
-        try:
-            os.unlink(self)
-        except FileNotFoundError:
-            if not missing_ok:
-                raise
-
-    def rmdir(self):
-        """
-        Remove this directory.  The directory must be empty.
-        """
-        os.rmdir(self)
-
-    def rename(self, target):
-        """
-        Rename this path to the target path.
-
-        The target path may be absolute or relative. Relative paths are
-        interpreted relative to the current working directory, *not* the
-        directory of the Path object.
-
-        Returns the new Path instance pointing to the target path.
-        """
-        os.rename(self, target)
-        return self.with_segments(target)
-
-    def replace(self, target):
-        """
-        Rename this path to the target path, overwriting if that path exists.
-
-        The target path may be absolute or relative. Relative paths are
-        interpreted relative to the current working directory, *not* the
-        directory of the Path object.
-
-        Returns the new Path instance pointing to the target path.
-        """
-        os.replace(self, target)
-        return self.with_segments(target)
-
-    def symlink_to(self, target, target_is_directory=False):
-        """
-        Make this path a symlink pointing to the target path.
-        Note the order of arguments (link, target) is the reverse of os.symlink.
-        """
-        if not hasattr(os, "symlink"):
-            raise NotImplementedError("os.symlink() not available on this system")
-        os.symlink(target, self, target_is_directory)
-
-    def hardlink_to(self, target):
-        """
-        Make this path a hard link pointing to the same file as *target*.
-
-        Note the order of arguments (self, target) is the reverse of os.link's.
-        """
-        if not hasattr(os, "link"):
-            raise NotImplementedError("os.link() not available on this system")
-        os.link(target, self)
-
-    def expanduser(self):
-        """ Return a new path with expanded ~ and ~user constructs
-        (as returned by os.path.expanduser)
-        """
-        if (not (self.drive or self.root) and
-            self._tail and self._tail[0][:1] == '~'):
-            homedir = self._flavour.expanduser(self._tail[0])
-            if homedir[:1] == "~":
-                raise RuntimeError("Could not determine home directory.")
-            drv, root, tail = self._parse_path(homedir)
-            return self._from_parsed_parts(drv, root, tail + self._tail[1:])
-
-        return self
-
-
-class PosixPath(Path, PurePosixPath):
-    """Path subclass for non-Windows systems.
-
-    On a POSIX system, instantiating a Path should return this object.
-    """
-    __slots__ = ()
-
-    if os.name == 'nt':
-        def __new__(cls, *args, **kwargs):
-            raise NotImplementedError(
-                f"cannot instantiate {cls.__name__!r} on your system")
-
-class WindowsPath(Path, PureWindowsPath):
-    """Path subclass for Windows systems.
-
-    On a Windows system, instantiating a Path should return this object.
-    """
-    __slots__ = ()
-
-    if os.name != 'nt':
-        def __new__(cls, *args, **kwargs):
-            raise NotImplementedError(
-                f"cannot instantiate {cls.__name__!r} on your system")
diff --git a/Lib/pathlib/__init__.py b/Lib/pathlib/__init__.py
new file mode 100644
index 00000000000000..f4668ab3270e51
--- /dev/null
+++ b/Lib/pathlib/__init__.py
@@ -0,0 +1,507 @@
+"""Object-oriented filesystem paths.
+
+This module provides classes to represent abstract paths and concrete
+paths with operations that have semantics appropriate for different
+operating systems.
+"""
+
+import io
+import ntpath
+import os
+import posixpath
+
+try:
+    import pwd
+except ImportError:
+    pwd = None
+try:
+    import grp
+except ImportError:
+    grp = None
+
+from . import _abc
+
+
+__all__ = [
+    "UnsupportedOperation",
+    "PurePath", "PurePosixPath", "PureWindowsPath",
+    "Path", "PosixPath", "WindowsPath",
+    ]
+
+
+UnsupportedOperation = _abc.UnsupportedOperation
+
+
+class PurePath(_abc.PurePathBase):
+    """Base class for manipulating paths without I/O.
+
+    PurePath represents a filesystem path and offers operations which
+    don't imply any actual filesystem I/O.  Depending on your system,
+    instantiating a PurePath will return either a PurePosixPath or a
+    PureWindowsPath object.  You can also instantiate either of these classes
+    directly, regardless of your system.
+    """
+
+    __slots__ = (
+        # The `_str_normcase_cached` slot stores the string path with
+        # normalized case. It is set when the `_str_normcase` property is
+        # accessed for the first time. It's used to implement `__eq__()`
+        # `__hash__()`, and `_parts_normcase`
+        '_str_normcase_cached',
+
+        # The `_parts_normcase_cached` slot stores the case-normalized
+        # string path after splitting on path separators. It's set when the
+        # `_parts_normcase` property is accessed for the first time. It's used
+        # to implement comparison methods like `__lt__()`.
+        '_parts_normcase_cached',
+
+        # The `_hash` slot stores the hash of the case-normalized string
+        # path. It's set when `__hash__()` is called for the first time.
+        '_hash',
+    )
+
+    def __new__(cls, *args, **kwargs):
+        """Construct a PurePath from one or several strings and or existing
+        PurePath objects.  The strings and path objects are combined so as
+        to yield a canonicalized path, which is incorporated into the
+        new PurePath object.
+        """
+        if cls is PurePath:
+            cls = PureWindowsPath if os.name == 'nt' else PurePosixPath
+        return object.__new__(cls)
+
+    def __init__(self, *args):
+        paths = []
+        for arg in args:
+            if isinstance(arg, PurePath):
+                if arg.pathmod is ntpath and self.pathmod is posixpath:
+                    # GH-103631: Convert separators for backwards compatibility.
+                    paths.extend(path.replace('\\', '/') for path in arg._raw_paths)
+                else:
+                    paths.extend(arg._raw_paths)
+            else:
+                try:
+                    path = os.fspath(arg)
+                except TypeError:
+                    path = arg
+                if not isinstance(path, str):
+                    raise TypeError(
+                        "argument should be a str or an os.PathLike "
+                        "object where __fspath__ returns a str, "
+                        f"not {type(path).__name__!r}")
+                paths.append(path)
+        super().__init__(*paths)
+
+    def __reduce__(self):
+        # Using the parts tuple helps share interned path parts
+        # when pickling related paths.
+        return (self.__class__, self.parts)
+
+    def __fspath__(self):
+        return str(self)
+
+    def __bytes__(self):
+        """Return the bytes representation of the path.  This is only
+        recommended to use under Unix."""
+        return os.fsencode(self)
+
+    @property
+    def _str_normcase(self):
+        # String with normalized case, for hashing and equality checks
+        try:
+            return self._str_normcase_cached
+        except AttributeError:
+            if _abc._is_case_sensitive(self.pathmod):
+                self._str_normcase_cached = str(self)
+            else:
+                self._str_normcase_cached = str(self).lower()
+            return self._str_normcase_cached
+
+    def __hash__(self):
+        try:
+            return self._hash
+        except AttributeError:
+            self._hash = hash(self._str_normcase)
+            return self._hash
+
+    def __eq__(self, other):
+        if not isinstance(other, PurePath):
+            return NotImplemented
+        return self._str_normcase == other._str_normcase and self.pathmod is other.pathmod
+
+    @property
+    def _parts_normcase(self):
+        # Cached parts with normalized case, for comparisons.
+        try:
+            return self._parts_normcase_cached
+        except AttributeError:
+            self._parts_normcase_cached = self._str_normcase.split(self.pathmod.sep)
+            return self._parts_normcase_cached
+
+    def __lt__(self, other):
+        if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
+            return NotImplemented
+        return self._parts_normcase < other._parts_normcase
+
+    def __le__(self, other):
+        if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
+            return NotImplemented
+        return self._parts_normcase <= other._parts_normcase
+
+    def __gt__(self, other):
+        if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
+            return NotImplemented
+        return self._parts_normcase > other._parts_normcase
+
+    def __ge__(self, other):
+        if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
+            return NotImplemented
+        return self._parts_normcase >= other._parts_normcase
+
+    def as_uri(self):
+        """Return the path as a URI."""
+        if not self.is_absolute():
+            raise ValueError("relative path can't be expressed as a file URI")
+
+        drive = self.drive
+        if len(drive) == 2 and drive[1] == ':':
+            # It's a path on a local drive => 'file:///c:/a/b'
+            prefix = 'file:///' + drive
+            path = self.as_posix()[2:]
+        elif drive:
+            # It's a path on a network drive => 'file://host/share/a/b'
+            prefix = 'file:'
+            path = self.as_posix()
+        else:
+            # It's a posix path => 'file:///etc/hosts'
+            prefix = 'file://'
+            path = str(self)
+        from urllib.parse import quote_from_bytes
+        return prefix + quote_from_bytes(os.fsencode(path))
+
+
+# Subclassing os.PathLike makes isinstance() checks slower,
+# which in turn makes Path construction slower. Register instead!
+os.PathLike.register(PurePath)
+
+
+class PurePosixPath(PurePath):
+    """PurePath subclass for non-Windows systems.
+
+    On a POSIX system, instantiating a PurePath should return this object.
+    However, you can also instantiate it directly on any system.
+    """
+    pathmod = posixpath
+    __slots__ = ()
+
+
+class PureWindowsPath(PurePath):
+    """PurePath subclass for Windows systems.
+
+    On a Windows system, instantiating a PurePath should return this object.
+    However, you can also instantiate it directly on any system.
+    """
+    pathmod = ntpath
+    __slots__ = ()
+
+
+class Path(_abc.PathBase, PurePath):
+    """PurePath subclass that can make system calls.
+
+    Path represents a filesystem path but unlike PurePath, also offers
+    methods to do system calls on path objects. Depending on your system,
+    instantiating a Path will return either a PosixPath or a WindowsPath
+    object. You can also instantiate a PosixPath or WindowsPath directly,
+    but cannot instantiate a WindowsPath on a POSIX system or vice versa.
+    """
+    __slots__ = ()
+    as_uri = PurePath.as_uri
+
+    @classmethod
+    def _unsupported(cls, method_name):
+        msg = f"{cls.__name__}.{method_name}() is unsupported on this system"
+        raise UnsupportedOperation(msg)
+
+    def __init__(self, *args, **kwargs):
+        if kwargs:
+            import warnings
+            msg = ("support for supplying keyword arguments to pathlib.PurePath "
+                   "is deprecated and scheduled for removal in Python {remove}")
+            warnings._deprecated("pathlib.PurePath(**kwargs)", msg, remove=(3, 14))
+        super().__init__(*args)
+
+    def __new__(cls, *args, **kwargs):
+        if cls is Path:
+            cls = WindowsPath if os.name == 'nt' else PosixPath
+        return object.__new__(cls)
+
+    def stat(self, *, follow_symlinks=True):
+        """
+        Return the result of the stat() system call on this path, like
+        os.stat() does.
+        """
+        return os.stat(self, follow_symlinks=follow_symlinks)
+
+    def is_mount(self):
+        """
+        Check if this path is a mount point
+        """
+        return os.path.ismount(self)
+
+    def is_junction(self):
+        """
+        Whether this path is a junction.
+        """
+        return os.path.isjunction(self)
+
+    def open(self, mode='r', buffering=-1, encoding=None,
+             errors=None, newline=None):
+        """
+        Open the file pointed by this path and return a file object, as
+        the built-in open() function does.
+        """
+        if "b" not in mode:
+            encoding = io.text_encoding(encoding)
+        return io.open(self, mode, buffering, encoding, errors, newline)
+
+    def iterdir(self):
+        """Yield path objects of the directory contents.
+
+        The children are yielded in arbitrary order, and the
+        special entries '.' and '..' are not included.
+        """
+        return (self._make_child_relpath(name) for name in os.listdir(self))
+
+    def _scandir(self):
+        return os.scandir(self)
+
+    def absolute(self):
+        """Return an absolute version of this path
+        No normalization or symlink resolution is performed.
+
+        Use resolve() to resolve symlinks and remove '..' segments.
+        """
+        if self.is_absolute():
+            return self
+        if self.root:
+            drive = os.path.splitroot(os.getcwd())[0]
+            return self._from_parsed_parts(drive, self.root, self._tail)
+        if self.drive:
+            # There is a CWD on each drive-letter drive.
+            cwd = os.path.abspath(self.drive)
+        else:
+            cwd = os.getcwd()
+        if not self._tail:
+            # Fast path for "empty" paths, e.g. Path("."), Path("") or Path().
+            # We pass only one argument to with_segments() to avoid the cost
+            # of joining, and we exploit the fact that getcwd() returns a
+            # fully-normalized string by storing it in _str. This is used to
+            # implement Path.cwd().
+            result = self.with_segments(cwd)
+            result._str = cwd
+            return result
+        drive, root, rel = os.path.splitroot(cwd)
+        if not rel:
+            return self._from_parsed_parts(drive, root, self._tail)
+        tail = rel.split(self.pathmod.sep)
+        tail.extend(self._tail)
+        return self._from_parsed_parts(drive, root, tail)
+
+    def resolve(self, strict=False):
+        """
+        Make the path absolute, resolving all symlinks on the way and also
+        normalizing it.
+        """
+
+        return self.with_segments(os.path.realpath(self, strict=strict))
+
+    if pwd:
+        def owner(self, *, follow_symlinks=True):
+            """
+            Return the login name of the file owner.
+            """
+            uid = self.stat(follow_symlinks=follow_symlinks).st_uid
+            return pwd.getpwuid(uid).pw_name
+
+    if grp:
+        def group(self, *, follow_symlinks=True):
+            """
+            Return the group name of the file gid.
+            """
+            gid = self.stat(follow_symlinks=follow_symlinks).st_gid
+            return grp.getgrgid(gid).gr_name
+
+    if hasattr(os, "readlink"):
+        def readlink(self):
+            """
+            Return the path to which the symbolic link points.
+            """
+            return self.with_segments(os.readlink(self))
+
+    def touch(self, mode=0o666, exist_ok=True):
+        """
+        Create this file with the given access mode, if it doesn't exist.
+        """
+
+        if exist_ok:
+            # First try to bump modification time
+            # Implementation note: GNU touch uses the UTIME_NOW option of
+            # the utimensat() / futimens() functions.
+            try:
+                os.utime(self, None)
+            except OSError:
+                # Avoid exception chaining
+                pass
+            else:
+                return
+        flags = os.O_CREAT | os.O_WRONLY
+        if not exist_ok:
+            flags |= os.O_EXCL
+        fd = os.open(self, flags, mode)
+        os.close(fd)
+
+    def mkdir(self, mode=0o777, parents=False, exist_ok=False):
+        """
+        Create a new directory at this given path.
+        """
+        try:
+            os.mkdir(self, mode)
+        except FileNotFoundError:
+            if not parents or self.parent == self:
+                raise
+            self.parent.mkdir(parents=True, exist_ok=True)
+            self.mkdir(mode, parents=False, exist_ok=exist_ok)
+        except OSError:
+            # Cannot rely on checking for EEXIST, since the operating system
+            # could give priority to other errors like EACCES or EROFS
+            if not exist_ok or not self.is_dir():
+                raise
+
+    def chmod(self, mode, *, follow_symlinks=True):
+        """
+        Change the permissions of the path, like os.chmod().
+        """
+        os.chmod(self, mode, follow_symlinks=follow_symlinks)
+
+    def unlink(self, missing_ok=False):
+        """
+        Remove this file or link.
+        If the path is a directory, use rmdir() instead.
+        """
+        try:
+            os.unlink(self)
+        except FileNotFoundError:
+            if not missing_ok:
+                raise
+
+    def rmdir(self):
+        """
+        Remove this directory.  The directory must be empty.
+        """
+        os.rmdir(self)
+
+    def rename(self, target):
+        """
+        Rename this path to the target path.
+
+        The target path may be absolute or relative. Relative paths are
+        interpreted relative to the current working directory, *not* the
+        directory of the Path object.
+
+        Returns the new Path instance pointing to the target path.
+        """
+        os.rename(self, target)
+        return self.with_segments(target)
+
+    def replace(self, target):
+        """
+        Rename this path to the target path, overwriting if that path exists.
+
+        The target path may be absolute or relative. Relative paths are
+        interpreted relative to the current working directory, *not* the
+        directory of the Path object.
+
+        Returns the new Path instance pointing to the target path.
+        """
+        os.replace(self, target)
+        return self.with_segments(target)
+
+    if hasattr(os, "symlink"):
+        def symlink_to(self, target, target_is_directory=False):
+            """
+            Make this path a symlink pointing to the target path.
+            Note the order of arguments (link, target) is the reverse of os.symlink.
+            """
+            os.symlink(target, self, target_is_directory)
+
+    if hasattr(os, "link"):
+        def hardlink_to(self, target):
+            """
+            Make this path a hard link pointing to the same file as *target*.
+
+            Note the order of arguments (self, target) is the reverse of os.link's.
+            """
+            os.link(target, self)
+
+    def expanduser(self):
+        """ Return a new path with expanded ~ and ~user constructs
+        (as returned by os.path.expanduser)
+        """
+        if (not (self.drive or self.root) and
+            self._tail and self._tail[0][:1] == '~'):
+            homedir = os.path.expanduser(self._tail[0])
+            if homedir[:1] == "~":
+                raise RuntimeError("Could not determine home directory.")
+            drv, root, tail = self._parse_path(homedir)
+            return self._from_parsed_parts(drv, root, tail + self._tail[1:])
+
+        return self
+
+    @classmethod
+    def from_uri(cls, uri):
+        """Return a new path from the given 'file' URI."""
+        if not uri.startswith('file:'):
+            raise ValueError(f"URI does not start with 'file:': {uri!r}")
+        path = uri[5:]
+        if path[:3] == '///':
+            # Remove empty authority
+            path = path[2:]
+        elif path[:12] == '//localhost/':
+            # Remove 'localhost' authority
+            path = path[11:]
+        if path[:3] == '///' or (path[:1] == '/' and path[2:3] in ':|'):
+            # Remove slash before DOS device/UNC path
+            path = path[1:]
+        if path[1:2] == '|':
+            # Replace bar with colon in DOS drive
+            path = path[:1] + ':' + path[2:]
+        from urllib.parse import unquote_to_bytes
+        path = cls(os.fsdecode(unquote_to_bytes(path)))
+        if not path.is_absolute():
+            raise ValueError(f"URI is not absolute: {uri!r}")
+        return path
+
+
+class PosixPath(Path, PurePosixPath):
+    """Path subclass for non-Windows systems.
+
+    On a POSIX system, instantiating a Path should return this object.
+    """
+    __slots__ = ()
+
+    if os.name == 'nt':
+        def __new__(cls, *args, **kwargs):
+            raise UnsupportedOperation(
+                f"cannot instantiate {cls.__name__!r} on your system")
+
+class WindowsPath(Path, PureWindowsPath):
+    """Path subclass for Windows systems.
+
+    On a Windows system, instantiating a Path should return this object.
+    """
+    __slots__ = ()
+
+    if os.name != 'nt':
+        def __new__(cls, *args, **kwargs):
+            raise UnsupportedOperation(
+                f"cannot instantiate {cls.__name__!r} on your system")
diff --git a/Lib/pathlib/_abc.py b/Lib/pathlib/_abc.py
new file mode 100644
index 00000000000000..4808d0e61f7038
--- /dev/null
+++ b/Lib/pathlib/_abc.py
@@ -0,0 +1,1150 @@
+import functools
+import io
+import ntpath
+import os
+import posixpath
+import sys
+import warnings
+from _collections_abc import Sequence
+from errno import ENOENT, ENOTDIR, EBADF, ELOOP, EINVAL
+from itertools import chain
+from stat import S_ISDIR, S_ISLNK, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO
+
+#
+# Internals
+#
+
+# Maximum number of symlinks to follow in PathBase.resolve()
+_MAX_SYMLINKS = 40
+
+# Reference for Windows paths can be found at
+# https://learn.microsoft.com/en-gb/windows/win32/fileio/naming-a-file .
+_WIN_RESERVED_NAMES = frozenset(
+    {'CON', 'PRN', 'AUX', 'NUL', 'CONIN$', 'CONOUT$'} |
+    {f'COM{c}' for c in '123456789\xb9\xb2\xb3'} |
+    {f'LPT{c}' for c in '123456789\xb9\xb2\xb3'}
+)
+
+_WINERROR_NOT_READY = 21  # drive exists but is not accessible
+_WINERROR_INVALID_NAME = 123  # fix for bpo-35306
+_WINERROR_CANT_RESOLVE_FILENAME = 1921  # broken symlink pointing to itself
+
+# EBADF - guard against macOS `stat` throwing EBADF
+_IGNORED_ERRNOS = (ENOENT, ENOTDIR, EBADF, ELOOP)
+
+_IGNORED_WINERRORS = (
+    _WINERROR_NOT_READY,
+    _WINERROR_INVALID_NAME,
+    _WINERROR_CANT_RESOLVE_FILENAME)
+
+def _ignore_error(exception):
+    return (getattr(exception, 'errno', None) in _IGNORED_ERRNOS or
+            getattr(exception, 'winerror', None) in _IGNORED_WINERRORS)
+
+
+@functools.cache
+def _is_case_sensitive(pathmod):
+    return pathmod.normcase('Aa') == 'Aa'
+
+#
+# Globbing helpers
+#
+
+re = glob = None
+
+
+@functools.lru_cache(maxsize=256)
+def _compile_pattern(pat, sep, case_sensitive):
+    """Compile given glob pattern to a re.Pattern object (observing case
+    sensitivity)."""
+    global re, glob
+    if re is None:
+        import re, glob
+
+    flags = re.NOFLAG if case_sensitive else re.IGNORECASE
+    regex = glob.translate(pat, recursive=True, include_hidden=True, seps=sep)
+    # The string representation of an empty path is a single dot ('.'). Empty
+    # paths shouldn't match wildcards, so we consume it with an atomic group.
+    regex = r'(\.\Z)?+' + regex
+    return re.compile(regex, flags=flags).match
+
+
+def _select_children(parent_paths, dir_only, follow_symlinks, match):
+    """Yield direct children of given paths, filtering by name and type."""
+    if follow_symlinks is None:
+        follow_symlinks = True
+    for parent_path in parent_paths:
+        try:
+            # We must close the scandir() object before proceeding to
+            # avoid exhausting file descriptors when globbing deep trees.
+            with parent_path._scandir() as scandir_it:
+                entries = list(scandir_it)
+        except OSError:
+            pass
+        else:
+            for entry in entries:
+                if dir_only:
+                    try:
+                        if not entry.is_dir(follow_symlinks=follow_symlinks):
+                            continue
+                    except OSError:
+                        continue
+                name = entry.name
+                if match(name):
+                    yield parent_path._make_child_relpath(name)
+
+
+def _select_recursive(parent_paths, dir_only, follow_symlinks):
+    """Yield given paths and all their subdirectories, recursively."""
+    if follow_symlinks is None:
+        follow_symlinks = False
+    for parent_path in parent_paths:
+        paths = [parent_path]
+        while paths:
+            path = paths.pop()
+            yield path
+            try:
+                # We must close the scandir() object before proceeding to
+                # avoid exhausting file descriptors when globbing deep trees.
+                with path._scandir() as scandir_it:
+                    entries = list(scandir_it)
+            except OSError:
+                pass
+            else:
+                for entry in entries:
+                    try:
+                        if entry.is_dir(follow_symlinks=follow_symlinks):
+                            paths.append(path._make_child_relpath(entry.name))
+                            continue
+                    except OSError:
+                        pass
+                    if not dir_only:
+                        yield path._make_child_relpath(entry.name)
+
+
+def _select_unique(paths):
+    """Yields the given paths, filtering out duplicates."""
+    yielded = set()
+    try:
+        for path in paths:
+            path_str = str(path)
+            if path_str not in yielded:
+                yield path
+                yielded.add(path_str)
+    finally:
+        yielded.clear()
+
+
+class UnsupportedOperation(NotImplementedError):
+    """An exception that is raised when an unsupported operation is called on
+    a path object.
+    """
+    pass
+
+
+class _PathParents(Sequence):
+    """This object provides sequence-like access to the logical ancestors
+    of a path.  Don't try to construct it yourself."""
+    __slots__ = ('_path', '_drv', '_root', '_tail')
+
+    def __init__(self, path):
+        self._path = path
+        self._drv = path.drive
+        self._root = path.root
+        self._tail = path._tail
+
+    def __len__(self):
+        return len(self._tail)
+
+    def __getitem__(self, idx):
+        if isinstance(idx, slice):
+            return tuple(self[i] for i in range(*idx.indices(len(self))))
+
+        if idx >= len(self) or idx < -len(self):
+            raise IndexError(idx)
+        if idx < 0:
+            idx += len(self)
+        return self._path._from_parsed_parts(self._drv, self._root,
+                                             self._tail[:-idx - 1])
+
+    def __repr__(self):
+        return "<{}.parents>".format(type(self._path).__name__)
+
+
+class PurePathBase:
+    """Base class for pure path objects.
+
+    This class *does not* provide several magic methods that are defined in
+    its subclass PurePath. They are: __fspath__, __bytes__, __reduce__,
+    __hash__, __eq__, __lt__, __le__, __gt__, __ge__. Its initializer and path
+    joining methods accept only strings, not os.PathLike objects more broadly.
+    """
+
+    __slots__ = (
+        # The `_raw_paths` slot stores unnormalized string paths. This is set
+        # in the `__init__()` method.
+        '_raw_paths',
+
+        # The `_drv`, `_root` and `_tail_cached` slots store parsed and
+        # normalized parts of the path. They are set when any of the `drive`,
+        # `root` or `_tail` properties are accessed for the first time. The
+        # three-part division corresponds to the result of
+        # `os.path.splitroot()`, except that the tail is further split on path
+        # separators (i.e. it is a list of strings), and that the root and
+        # tail are normalized.
+        '_drv', '_root', '_tail_cached',
+
+        # The `_str` slot stores the string representation of the path,
+        # computed from the drive, root and tail when `__str__()` is called
+        # for the first time. It's used to implement `_str_normcase`
+        '_str',
+
+        # The '_resolving' slot stores a boolean indicating whether the path
+        # is being processed by `PathBase.resolve()`. This prevents duplicate
+        # work from occurring when `resolve()` calls `stat()` or `readlink()`.
+        '_resolving',
+    )
+    pathmod = os.path
+
+    def __init__(self, *paths):
+        self._raw_paths = paths
+        self._resolving = False
+
+    def with_segments(self, *pathsegments):
+        """Construct a new path object from any number of path-like objects.
+        Subclasses may override this method to customize how new path objects
+        are created from methods like `iterdir()`.
+        """
+        return type(self)(*pathsegments)
+
+    @classmethod
+    def _parse_path(cls, path):
+        if not path:
+            return '', '', []
+        sep = cls.pathmod.sep
+        altsep = cls.pathmod.altsep
+        if altsep:
+            path = path.replace(altsep, sep)
+        drv, root, rel = cls.pathmod.splitroot(path)
+        if not root and drv.startswith(sep) and not drv.endswith(sep):
+            drv_parts = drv.split(sep)
+            if len(drv_parts) == 4 and drv_parts[2] not in '?.':
+                # e.g. //server/share
+                root = sep
+            elif len(drv_parts) == 6:
+                # e.g. //?/unc/server/share
+                root = sep
+        parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.']
+        return drv, root, parsed
+
+    def _load_parts(self):
+        paths = self._raw_paths
+        if len(paths) == 0:
+            path = ''
+        elif len(paths) == 1:
+            path = paths[0]
+        else:
+            path = self.pathmod.join(*paths)
+        drv, root, tail = self._parse_path(path)
+        self._drv = drv
+        self._root = root
+        self._tail_cached = tail
+
+    def _from_parsed_parts(self, drv, root, tail):
+        path_str = self._format_parsed_parts(drv, root, tail)
+        path = self.with_segments(path_str)
+        path._str = path_str or '.'
+        path._drv = drv
+        path._root = root
+        path._tail_cached = tail
+        return path
+
+    @classmethod
+    def _format_parsed_parts(cls, drv, root, tail):
+        if drv or root:
+            return drv + root + cls.pathmod.sep.join(tail)
+        elif tail and cls.pathmod.splitdrive(tail[0])[0]:
+            tail = ['.'] + tail
+        return cls.pathmod.sep.join(tail)
+
+    def __str__(self):
+        """Return the string representation of the path, suitable for
+        passing to system calls."""
+        try:
+            return self._str
+        except AttributeError:
+            self._str = self._format_parsed_parts(self.drive, self.root,
+                                                  self._tail) or '.'
+            return self._str
+
+    def as_posix(self):
+        """Return the string representation of the path with forward (/)
+        slashes."""
+        return str(self).replace(self.pathmod.sep, '/')
+
+    def __repr__(self):
+        return "{}({!r})".format(self.__class__.__name__, self.as_posix())
+
+    @property
+    def drive(self):
+        """The drive prefix (letter or UNC path), if any."""
+        try:
+            return self._drv
+        except AttributeError:
+            self._load_parts()
+            return self._drv
+
+    @property
+    def root(self):
+        """The root of the path, if any."""
+        try:
+            return self._root
+        except AttributeError:
+            self._load_parts()
+            return self._root
+
+    @property
+    def _tail(self):
+        try:
+            return self._tail_cached
+        except AttributeError:
+            self._load_parts()
+            return self._tail_cached
+
+    @property
+    def anchor(self):
+        """The concatenation of the drive and root, or ''."""
+        anchor = self.drive + self.root
+        return anchor
+
+    @property
+    def name(self):
+        """The final path component, if any."""
+        tail = self._tail
+        if not tail:
+            return ''
+        return tail[-1]
+
+    @property
+    def suffix(self):
+        """
+        The final component's last suffix, if any.
+
+        This includes the leading period. For example: '.txt'
+        """
+        name = self.name
+        i = name.rfind('.')
+        if 0 < i < len(name) - 1:
+            return name[i:]
+        else:
+            return ''
+
+    @property
+    def suffixes(self):
+        """
+        A list of the final component's suffixes, if any.
+
+        These include the leading periods. For example: ['.tar', '.gz']
+        """
+        name = self.name
+        if name.endswith('.'):
+            return []
+        name = name.lstrip('.')
+        return ['.' + suffix for suffix in name.split('.')[1:]]
+
+    @property
+    def stem(self):
+        """The final path component, minus its last suffix."""
+        name = self.name
+        i = name.rfind('.')
+        if 0 < i < len(name) - 1:
+            return name[:i]
+        else:
+            return name
+
+    def with_name(self, name):
+        """Return a new path with the file name changed."""
+        m = self.pathmod
+        if not name or m.sep in name or (m.altsep and m.altsep in name) or name == '.':
+            raise ValueError(f"Invalid name {name!r}")
+        tail = self._tail.copy()
+        if not tail:
+            raise ValueError(f"{self!r} has an empty name")
+        tail[-1] = name
+        return self._from_parsed_parts(self.drive, self.root, tail)
+
+    def with_stem(self, stem):
+        """Return a new path with the stem changed."""
+        return self.with_name(stem + self.suffix)
+
+    def with_suffix(self, suffix):
+        """Return a new path with the file suffix changed.  If the path
+        has no suffix, add given suffix.  If the given suffix is an empty
+        string, remove the suffix from the path.
+        """
+        if not suffix:
+            return self.with_name(self.stem)
+        elif suffix.startswith('.') and len(suffix) > 1:
+            return self.with_name(self.stem + suffix)
+        else:
+            raise ValueError(f"Invalid suffix {suffix!r}")
+
+    def relative_to(self, other, /, *_deprecated, walk_up=False):
+        """Return the relative path to another path identified by the passed
+        arguments.  If the operation is not possible (because this is not
+        related to the other path), raise ValueError.
+
+        The *walk_up* parameter controls whether `..` may be used to resolve
+        the path.
+        """
+        if _deprecated:
+            msg = ("support for supplying more than one positional argument "
+                   "to pathlib.PurePath.relative_to() is deprecated and "
+                   "scheduled for removal in Python {remove}")
+            warnings._deprecated("pathlib.PurePath.relative_to(*args)", msg,
+                                 remove=(3, 14))
+            other = self.with_segments(other, *_deprecated)
+        elif not isinstance(other, PurePathBase):
+            other = self.with_segments(other)
+        for step, path in enumerate(chain([other], other.parents)):
+            if path == self or path in self.parents:
+                break
+            elif not walk_up:
+                raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}")
+            elif path.name == '..':
+                raise ValueError(f"'..' segment in {str(other)!r} cannot be walked")
+        else:
+            raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors")
+        parts = ['..'] * step + self._tail[len(path._tail):]
+        return self._from_parsed_parts('', '', parts)
+
+    def is_relative_to(self, other, /, *_deprecated):
+        """Return True if the path is relative to another path or False.
+        """
+        if _deprecated:
+            msg = ("support for supplying more than one argument to "
+                   "pathlib.PurePath.is_relative_to() is deprecated and "
+                   "scheduled for removal in Python {remove}")
+            warnings._deprecated("pathlib.PurePath.is_relative_to(*args)",
+                                 msg, remove=(3, 14))
+            other = self.with_segments(other, *_deprecated)
+        elif not isinstance(other, PurePathBase):
+            other = self.with_segments(other)
+        return other == self or other in self.parents
+
+    @property
+    def parts(self):
+        """An object providing sequence-like access to the
+        components in the filesystem path."""
+        if self.drive or self.root:
+            return (self.drive + self.root,) + tuple(self._tail)
+        else:
+            return tuple(self._tail)
+
+    def joinpath(self, *pathsegments):
+        """Combine this path with one or several arguments, and return a
+        new path representing either a subpath (if all arguments are relative
+        paths) or a totally different path (if one of the arguments is
+        anchored).
+        """
+        return self.with_segments(*self._raw_paths, *pathsegments)
+
+    def __truediv__(self, key):
+        try:
+            return self.joinpath(key)
+        except TypeError:
+            return NotImplemented
+
+    def __rtruediv__(self, key):
+        try:
+            return self.with_segments(key, *self._raw_paths)
+        except TypeError:
+            return NotImplemented
+
+    @property
+    def parent(self):
+        """The logical parent of the path."""
+        drv = self.drive
+        root = self.root
+        tail = self._tail
+        if not tail:
+            return self
+        path = self._from_parsed_parts(drv, root, tail[:-1])
+        path._resolving = self._resolving
+        return path
+
+    @property
+    def parents(self):
+        """A sequence of this path's logical parents."""
+        # The value of this property should not be cached on the path object,
+        # as doing so would introduce a reference cycle.
+        return _PathParents(self)
+
+    def is_absolute(self):
+        """True if the path is absolute (has both a root and, if applicable,
+        a drive)."""
+        if self.pathmod is ntpath:
+            # ntpath.isabs() is defective - see GH-44626.
+            return bool(self.drive and self.root)
+        elif self.pathmod is posixpath:
+            # Optimization: work with raw paths on POSIX.
+            for path in self._raw_paths:
+                if path.startswith('/'):
+                    return True
+            return False
+        else:
+            return self.pathmod.isabs(str(self))
+
+    def is_reserved(self):
+        """Return True if the path contains one of the special names reserved
+        by the system, if any."""
+        if self.pathmod is posixpath or not self._tail:
+            return False
+
+        # NOTE: the rules for reserved names seem somewhat complicated
+        # (e.g. r"..\NUL" is reserved but not r"foo\NUL" if "foo" does not
+        # exist). We err on the side of caution and return True for paths
+        # which are not considered reserved by Windows.
+        if self.drive.startswith('\\\\'):
+            # UNC paths are never reserved.
+            return False
+        name = self._tail[-1].partition('.')[0].partition(':')[0].rstrip(' ')
+        return name.upper() in _WIN_RESERVED_NAMES
+
+    def match(self, path_pattern, *, case_sensitive=None):
+        """
+        Return True if this path matches the given pattern.
+        """
+        if not isinstance(path_pattern, PurePathBase):
+            path_pattern = self.with_segments(path_pattern)
+        if case_sensitive is None:
+            case_sensitive = _is_case_sensitive(self.pathmod)
+        sep = path_pattern.pathmod.sep
+        pattern_str = str(path_pattern)
+        if path_pattern.drive or path_pattern.root:
+            pass
+        elif path_pattern._tail:
+            pattern_str = f'**{sep}{pattern_str}'
+        else:
+            raise ValueError("empty pattern")
+        match = _compile_pattern(pattern_str, sep, case_sensitive)
+        return match(str(self)) is not None
+
+
+
+class PathBase(PurePathBase):
+    """Base class for concrete path objects.
+
+    This class provides dummy implementations for many methods that derived
+    classes can override selectively; the default implementations raise
+    UnsupportedOperation. The most basic methods, such as stat() and open(),
+    directly raise UnsupportedOperation; these basic methods are called by
+    other methods such as is_dir() and read_text().
+
+    The Path class derives this class to implement local filesystem paths.
+    Users may derive their own classes to implement virtual filesystem paths,
+    such as paths in archive files or on remote storage systems.
+    """
+    __slots__ = ()
+
+    @classmethod
+    def _unsupported(cls, method_name):
+        msg = f"{cls.__name__}.{method_name}() is unsupported"
+        raise UnsupportedOperation(msg)
+
+    def stat(self, *, follow_symlinks=True):
+        """
+        Return the result of the stat() system call on this path, like
+        os.stat() does.
+        """
+        self._unsupported("stat")
+
+    def lstat(self):
+        """
+        Like stat(), except if the path points to a symlink, the symlink's
+        status information is returned, rather than its target's.
+        """
+        return self.stat(follow_symlinks=False)
+
+
+    # Convenience functions for querying the stat results
+
+    def exists(self, *, follow_symlinks=True):
+        """
+        Whether this path exists.
+
+        This method normally follows symlinks; to check whether a symlink exists,
+        add the argument follow_symlinks=False.
+        """
+        try:
+            self.stat(follow_symlinks=follow_symlinks)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+        return True
+
+    def is_dir(self, *, follow_symlinks=True):
+        """
+        Whether this path is a directory.
+        """
+        try:
+            return S_ISDIR(self.stat(follow_symlinks=follow_symlinks).st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist or is a broken symlink
+            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def is_file(self, *, follow_symlinks=True):
+        """
+        Whether this path is a regular file (also True for symlinks pointing
+        to regular files).
+        """
+        try:
+            return S_ISREG(self.stat(follow_symlinks=follow_symlinks).st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist or is a broken symlink
+            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def is_mount(self):
+        """
+        Check if this path is a mount point
+        """
+        # Need to exist and be a dir
+        if not self.exists() or not self.is_dir():
+            return False
+
+        try:
+            parent_dev = self.parent.stat().st_dev
+        except OSError:
+            return False
+
+        dev = self.stat().st_dev
+        if dev != parent_dev:
+            return True
+        ino = self.stat().st_ino
+        parent_ino = self.parent.stat().st_ino
+        return ino == parent_ino
+
+    def is_symlink(self):
+        """
+        Whether this path is a symbolic link.
+        """
+        try:
+            return S_ISLNK(self.lstat().st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def is_junction(self):
+        """
+        Whether this path is a junction.
+        """
+        # Junctions are a Windows-only feature, not present in POSIX nor the
+        # majority of virtual filesystems. There is no cross-platform idiom
+        # to check for junctions (using stat().st_mode).
+        return False
+
+    def is_block_device(self):
+        """
+        Whether this path is a block device.
+        """
+        try:
+            return S_ISBLK(self.stat().st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist or is a broken symlink
+            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def is_char_device(self):
+        """
+        Whether this path is a character device.
+        """
+        try:
+            return S_ISCHR(self.stat().st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist or is a broken symlink
+            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def is_fifo(self):
+        """
+        Whether this path is a FIFO.
+        """
+        try:
+            return S_ISFIFO(self.stat().st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist or is a broken symlink
+            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def is_socket(self):
+        """
+        Whether this path is a socket.
+        """
+        try:
+            return S_ISSOCK(self.stat().st_mode)
+        except OSError as e:
+            if not _ignore_error(e):
+                raise
+            # Path doesn't exist or is a broken symlink
+            # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ )
+            return False
+        except ValueError:
+            # Non-encodable path
+            return False
+
+    def samefile(self, other_path):
+        """Return whether other_path is the same or not as this file
+        (as returned by os.path.samefile()).
+        """
+        st = self.stat()
+        try:
+            other_st = other_path.stat()
+        except AttributeError:
+            other_st = self.with_segments(other_path).stat()
+        return (st.st_ino == other_st.st_ino and
+                st.st_dev == other_st.st_dev)
+
+    def open(self, mode='r', buffering=-1, encoding=None,
+             errors=None, newline=None):
+        """
+        Open the file pointed by this path and return a file object, as
+        the built-in open() function does.
+        """
+        self._unsupported("open")
+
+    def read_bytes(self):
+        """
+        Open the file in bytes mode, read it, and close the file.
+        """
+        with self.open(mode='rb') as f:
+            return f.read()
+
+    def read_text(self, encoding=None, errors=None, newline=None):
+        """
+        Open the file in text mode, read it, and close the file.
+        """
+        encoding = io.text_encoding(encoding)
+        with self.open(mode='r', encoding=encoding, errors=errors, newline=newline) as f:
+            return f.read()
+
+    def write_bytes(self, data):
+        """
+        Open the file in bytes mode, write to it, and close the file.
+        """
+        # type-check for the buffer interface before truncating the file
+        view = memoryview(data)
+        with self.open(mode='wb') as f:
+            return f.write(view)
+
+    def write_text(self, data, encoding=None, errors=None, newline=None):
+        """
+        Open the file in text mode, write to it, and close the file.
+        """
+        if not isinstance(data, str):
+            raise TypeError('data must be str, not %s' %
+                            data.__class__.__name__)
+        encoding = io.text_encoding(encoding)
+        with self.open(mode='w', encoding=encoding, errors=errors, newline=newline) as f:
+            return f.write(data)
+
+    def iterdir(self):
+        """Yield path objects of the directory contents.
+
+        The children are yielded in arbitrary order, and the
+        special entries '.' and '..' are not included.
+        """
+        self._unsupported("iterdir")
+
+    def _scandir(self):
+        # Emulate os.scandir(), which returns an object that can be used as a
+        # context manager. This method is called by walk() and glob().
+        from contextlib import nullcontext
+        return nullcontext(self.iterdir())
+
+    def _make_child_relpath(self, name):
+        path_str = str(self)
+        tail = self._tail
+        if tail:
+            path_str = f'{path_str}{self.pathmod.sep}{name}'
+        elif path_str != '.':
+            path_str = f'{path_str}{name}'
+        else:
+            path_str = name
+        path = self.with_segments(path_str)
+        path._str = path_str
+        path._drv = self.drive
+        path._root = self.root
+        path._tail_cached = tail + [name]
+        return path
+
+    def glob(self, pattern, *, case_sensitive=None, follow_symlinks=None):
+        """Iterate over this subtree and yield all existing files (of any
+        kind, including directories) matching the given relative pattern.
+        """
+        sys.audit("pathlib.Path.glob", self, pattern)
+        return self._glob(pattern, case_sensitive, follow_symlinks)
+
+    def rglob(self, pattern, *, case_sensitive=None, follow_symlinks=None):
+        """Recursively yield all existing files (of any kind, including
+        directories) matching the given relative pattern, anywhere in
+        this subtree.
+        """
+        sys.audit("pathlib.Path.rglob", self, pattern)
+        return self._glob(f'**/{pattern}', case_sensitive, follow_symlinks)
+
+    def _glob(self, pattern, case_sensitive, follow_symlinks):
+        path_pattern = self.with_segments(pattern)
+        if path_pattern.drive or path_pattern.root:
+            raise NotImplementedError("Non-relative patterns are unsupported")
+        elif not path_pattern._tail:
+            raise ValueError("Unacceptable pattern: {!r}".format(pattern))
+
+        pattern_parts = path_pattern._tail.copy()
+        if pattern[-1] in (self.pathmod.sep, self.pathmod.altsep):
+            # GH-65238: pathlib doesn't preserve trailing slash. Add it back.
+            pattern_parts.append('')
+        if pattern_parts[-1] == '**':
+            # GH-70303: '**' only matches directories. Add trailing slash.
+            warnings.warn(
+                "Pattern ending '**' will match files and directories in a "
+                "future Python release. Add a trailing slash to match only "
+                "directories and remove this warning.",
+                FutureWarning, 3)
+            pattern_parts.append('')
+
+        if case_sensitive is None:
+            # TODO: evaluate case-sensitivity of each directory in _select_children().
+            case_sensitive = _is_case_sensitive(self.pathmod)
+
+        # If symlinks are handled consistently, and the pattern does not
+        # contain '..' components, then we can use a 'walk-and-match' strategy
+        # when expanding '**' wildcards. When a '**' wildcard is encountered,
+        # all following pattern parts are immediately consumed and used to
+        # build a `re.Pattern` object. This pattern is used to filter the
+        # recursive walk. As a result, pattern parts following a '**' wildcard
+        # do not perform any filesystem access, which can be much faster!
+        filter_paths = follow_symlinks is not None and '..' not in pattern_parts
+        deduplicate_paths = False
+        sep = self.pathmod.sep
+        paths = iter([self] if self.is_dir() else [])
+        part_idx = 0
+        while part_idx < len(pattern_parts):
+            part = pattern_parts[part_idx]
+            part_idx += 1
+            if part == '':
+                # Trailing slash.
+                pass
+            elif part == '..':
+                paths = (path._make_child_relpath('..') for path in paths)
+            elif part == '**':
+                # Consume adjacent '**' components.
+                while part_idx < len(pattern_parts) and pattern_parts[part_idx] == '**':
+                    part_idx += 1
+
+                if filter_paths and part_idx < len(pattern_parts) and pattern_parts[part_idx] != '':
+                    dir_only = pattern_parts[-1] == ''
+                    paths = _select_recursive(paths, dir_only, follow_symlinks)
+
+                    # Filter out paths that don't match pattern.
+                    prefix_len = len(str(self._make_child_relpath('_'))) - 1
+                    match = _compile_pattern(str(path_pattern), sep, case_sensitive)
+                    paths = (path for path in paths if match(str(path), prefix_len))
+                    return paths
+
+                dir_only = part_idx < len(pattern_parts)
+                paths = _select_recursive(paths, dir_only, follow_symlinks)
+                if deduplicate_paths:
+                    # De-duplicate if we've already seen a '**' component.
+                    paths = _select_unique(paths)
+                deduplicate_paths = True
+            elif '**' in part:
+                raise ValueError("Invalid pattern: '**' can only be an entire path component")
+            else:
+                dir_only = part_idx < len(pattern_parts)
+                match = _compile_pattern(part, sep, case_sensitive)
+                paths = _select_children(paths, dir_only, follow_symlinks, match)
+        return paths
+
+    def walk(self, top_down=True, on_error=None, follow_symlinks=False):
+        """Walk the directory tree from this directory, similar to os.walk()."""
+        sys.audit("pathlib.Path.walk", self, on_error, follow_symlinks)
+        paths = [self]
+
+        while paths:
+            path = paths.pop()
+            if isinstance(path, tuple):
+                yield path
+                continue
+
+            # We may not have read permission for self, in which case we can't
+            # get a list of the files the directory contains. os.walk()
+            # always suppressed the exception in that instance, rather than
+            # blow up for a minor reason when (say) a thousand readable
+            # directories are still left to visit. That logic is copied here.
+            try:
+                scandir_obj = path._scandir()
+            except OSError as error:
+                if on_error is not None:
+                    on_error(error)
+                continue
+
+            with scandir_obj as scandir_it:
+                dirnames = []
+                filenames = []
+                for entry in scandir_it:
+                    try:
+                        is_dir = entry.is_dir(follow_symlinks=follow_symlinks)
+                    except OSError:
+                        # Carried over from os.path.isdir().
+                        is_dir = False
+
+                    if is_dir:
+                        dirnames.append(entry.name)
+                    else:
+                        filenames.append(entry.name)
+
+            if top_down:
+                yield path, dirnames, filenames
+            else:
+                paths.append((path, dirnames, filenames))
+
+            paths += [path._make_child_relpath(d) for d in reversed(dirnames)]
+
+    def absolute(self):
+        """Return an absolute version of this path
+        No normalization or symlink resolution is performed.
+
+        Use resolve() to resolve symlinks and remove '..' segments.
+        """
+        self._unsupported("absolute")
+
+    @classmethod
+    def cwd(cls):
+        """Return a new path pointing to the current working directory."""
+        # We call 'absolute()' rather than using 'os.getcwd()' directly to
+        # enable users to replace the implementation of 'absolute()' in a
+        # subclass and benefit from the new behaviour here. This works because
+        # os.path.abspath('.') == os.getcwd().
+        return cls().absolute()
+
+    def expanduser(self):
+        """ Return a new path with expanded ~ and ~user constructs
+        (as returned by os.path.expanduser)
+        """
+        self._unsupported("expanduser")
+
+    @classmethod
+    def home(cls):
+        """Return a new path pointing to expanduser('~').
+        """
+        return cls("~").expanduser()
+
+    def readlink(self):
+        """
+        Return the path to which the symbolic link points.
+        """
+        self._unsupported("readlink")
+    readlink._supported = False
+
+    def _split_stack(self):
+        """
+        Split the path into a 2-tuple (anchor, parts), where *anchor* is the
+        uppermost parent of the path (equivalent to path.parents[-1]), and
+        *parts* is a reversed list of parts following the anchor.
+        """
+        if not self._tail:
+            return self, []
+        return self._from_parsed_parts(self.drive, self.root, []), self._tail[::-1]
+
+    def resolve(self, strict=False):
+        """
+        Make the path absolute, resolving all symlinks on the way and also
+        normalizing it.
+        """
+        if self._resolving:
+            return self
+        path, parts = self._split_stack()
+        try:
+            path = path.absolute()
+        except UnsupportedOperation:
+            pass
+
+        # If the user has *not* overridden the `readlink()` method, then symlinks are unsupported
+        # and (in non-strict mode) we can improve performance by not calling `stat()`.
+        querying = strict or getattr(self.readlink, '_supported', True)
+        link_count = 0
+        while parts:
+            part = parts.pop()
+            if part == '..':
+                if not path._tail:
+                    if path.root:
+                        # Delete '..' segment immediately following root
+                        continue
+                elif path._tail[-1] != '..':
+                    # Delete '..' segment and its predecessor
+                    path = path.parent
+                    continue
+            next_path = path._make_child_relpath(part)
+            if querying and part != '..':
+                next_path._resolving = True
+                try:
+                    st = next_path.stat(follow_symlinks=False)
+                    if S_ISLNK(st.st_mode):
+                        # Like Linux and macOS, raise OSError(errno.ELOOP) if too many symlinks are
+                        # encountered during resolution.
+                        link_count += 1
+                        if link_count >= _MAX_SYMLINKS:
+                            raise OSError(ELOOP, "Too many symbolic links in path", str(self))
+                        target, target_parts = next_path.readlink()._split_stack()
+                        # If the symlink target is absolute (like '/etc/hosts'), set the current
+                        # path to its uppermost parent (like '/').
+                        if target.root:
+                            path = target
+                        # Add the symlink target's reversed tail parts (like ['hosts', 'etc']) to
+                        # the stack of unresolved path parts.
+                        parts.extend(target_parts)
+                        continue
+                    elif parts and not S_ISDIR(st.st_mode):
+                        raise NotADirectoryError(ENOTDIR, "Not a directory", str(self))
+                except OSError:
+                    if strict:
+                        raise
+                    else:
+                        querying = False
+                next_path._resolving = False
+            path = next_path
+        return path
+
+    def symlink_to(self, target, target_is_directory=False):
+        """
+        Make this path a symlink pointing to the target path.
+        Note the order of arguments (link, target) is the reverse of os.symlink.
+        """
+        self._unsupported("symlink_to")
+
+    def hardlink_to(self, target):
+        """
+        Make this path a hard link pointing to the same file as *target*.
+
+        Note the order of arguments (self, target) is the reverse of os.link's.
+        """
+        self._unsupported("hardlink_to")
+
+    def touch(self, mode=0o666, exist_ok=True):
+        """
+        Create this file with the given access mode, if it doesn't exist.
+        """
+        self._unsupported("touch")
+
+    def mkdir(self, mode=0o777, parents=False, exist_ok=False):
+        """
+        Create a new directory at this given path.
+        """
+        self._unsupported("mkdir")
+
+    def rename(self, target):
+        """
+        Rename this path to the target path.
+
+        The target path may be absolute or relative. Relative paths are
+        interpreted relative to the current working directory, *not* the
+        directory of the Path object.
+
+        Returns the new Path instance pointing to the target path.
+        """
+        self._unsupported("rename")
+
+    def replace(self, target):
+        """
+        Rename this path to the target path, overwriting if that path exists.
+
+        The target path may be absolute or relative. Relative paths are
+        interpreted relative to the current working directory, *not* the
+        directory of the Path object.
+
+        Returns the new Path instance pointing to the target path.
+        """
+        self._unsupported("replace")
+
+    def chmod(self, mode, *, follow_symlinks=True):
+        """
+        Change the permissions of the path, like os.chmod().
+        """
+        self._unsupported("chmod")
+
+    def lchmod(self, mode):
+        """
+        Like chmod(), except if the path points to a symlink, the symlink's
+        permissions are changed, rather than its target's.
+        """
+        self.chmod(mode, follow_symlinks=False)
+
+    def unlink(self, missing_ok=False):
+        """
+        Remove this file or link.
+        If the path is a directory, use rmdir() instead.
+        """
+        self._unsupported("unlink")
+
+    def rmdir(self):
+        """
+        Remove this directory.  The directory must be empty.
+        """
+        self._unsupported("rmdir")
+
+    def owner(self, *, follow_symlinks=True):
+        """
+        Return the login name of the file owner.
+        """
+        self._unsupported("owner")
+
+    def group(self, *, follow_symlinks=True):
+        """
+        Return the group name of the file gid.
+        """
+        self._unsupported("group")
+
+    @classmethod
+    def from_uri(cls, uri):
+        """Return a new path from the given 'file' URI."""
+        cls._unsupported("from_uri")
+
+    def as_uri(self):
+        """Return the path as a URI."""
+        self._unsupported("as_uri")
diff --git a/Lib/pdb.py b/Lib/pdb.py
index 6b6feac1ddead1..83b7fefec63636 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -76,6 +76,7 @@
 import dis
 import code
 import glob
+import codeop
 import pprint
 import signal
 import inspect
@@ -84,6 +85,7 @@
 import traceback
 import linecache
 
+from contextlib import contextmanager
 from typing import Union
 
 
@@ -136,9 +138,14 @@ def check(self):
         if not os.path.exists(self):
             print('Error:', self.orig, 'does not exist')
             sys.exit(1)
+        if os.path.isdir(self):
+            print('Error:', self.orig, 'is a directory')
+            sys.exit(1)
 
-        # Replace pdb's dir with script's dir in front of module search path.
-        sys.path[0] = os.path.dirname(self)
+        # If safe_path(-P) is not set, sys.path[0] is the directory
+        # of pdb, and we should replace it with the directory of the script
+        if not sys.flags.safe_path:
+            sys.path[0] = os.path.dirname(self)
 
     @property
     def filename(self):
@@ -162,6 +169,9 @@ class _ModuleTarget(str):
     def check(self):
         try:
             self._details
+        except ImportError as e:
+            print(f"ImportError: {e}")
+            sys.exit(1)
         except Exception:
             traceback.print_exc()
             sys.exit(1)
@@ -197,6 +207,15 @@ def namespace(self):
         )
 
 
+class _PdbInteractiveConsole(code.InteractiveConsole):
+    def __init__(self, ns, message):
+        self._message = message
+        super().__init__(locals=ns, local_exit=True)
+
+    def write(self, data):
+        self._message(data, end='')
+
+
 # Interaction prompt line will separate file and call info from code
 # text using value of line_prefix string.  A newline and arrow may
 # be to your liking.  You can set it once pdb is imported using the
@@ -204,10 +223,15 @@ def namespace(self):
 # line_prefix = ': '    # Use this to get the old situation back
 line_prefix = '\n-> '   # Probably a better default
 
-class Pdb(bdb.Bdb, cmd.Cmd):
 
+
+class Pdb(bdb.Bdb, cmd.Cmd):
     _previous_sigint_handler = None
 
+    # Limit the maximum depth of chained exceptions, we should be handling cycles,
+    # but in case there are recursions, we stop at 999.
+    MAX_CHAINED_EXCEPTION_DEPTH = 999
+
     def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,
                  nosigint=False, readrc=True):
         bdb.Bdb.__init__(self, skip=skip)
@@ -225,11 +249,14 @@ def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,
         try:
             import readline
             # remove some common file name delimiters
-            readline.set_completer_delims(' \t\n`@#$%^&*()=+[{]}\\|;:\'",<>?')
+            readline.set_completer_delims(' \t\n`@#%^&*()=+[{]}\\|;:\'",<>?')
         except ImportError:
             pass
         self.allow_kbdint = False
         self.nosigint = nosigint
+        # Consider these characters as part of the command so when the users type
+        # c.a or c['a'], it won't be recognized as a c(ontinue) command
+        self.identchars = cmd.Cmd.identchars + '=.[](),"\'+-*/%@&|<>~^'
 
         # Read ~/.pdbrc and ./.pdbrc
         self.rcLines = []
@@ -255,6 +282,9 @@ def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,
         self.commands_bnum = None # The breakpoint number for which we are
                                   # defining a list
 
+        self._chained_exceptions = tuple()
+        self._chained_exception_index = 0
+
     def sigint_handler(self, signum, frame):
         if self.allow_kbdint:
             raise KeyboardInterrupt
@@ -291,6 +321,14 @@ def setup(self, f, tb):
         # cache it here to ensure that modifications are not overwritten.
         self.curframe_locals = self.curframe.f_locals
         self.set_convenience_variable(self.curframe, '_frame', self.curframe)
+
+        if self._chained_exceptions:
+            self.set_convenience_variable(
+                self.curframe,
+                '_exception',
+                self._chained_exceptions[self._chained_exception_index],
+            )
+
         return self.execRcLines()
 
     # Can be executed earlier than 'setup' if desired
@@ -410,10 +448,68 @@ def preloop(self):
                 # fields are changed to be displayed
                 if newvalue is not oldvalue and newvalue != oldvalue:
                     displaying[expr] = newvalue
-                    self.message('display %s: %r  [old: %r]' %
-                                 (expr, newvalue, oldvalue))
+                    self.message('display %s: %s  [old: %s]' %
+                                 (expr, self._safe_repr(newvalue, expr),
+                                  self._safe_repr(oldvalue, expr)))
+
+    def _get_tb_and_exceptions(self, tb_or_exc):
+        """
+        Given a tracecack or an exception, return a tuple of chained exceptions
+        and current traceback to inspect.
 
-    def interaction(self, frame, traceback):
+        This will deal with selecting the right ``__cause__`` or ``__context__``
+        as well as handling cycles, and return a flattened list of exceptions we
+        can jump to with do_exceptions.
+
+        """
+        _exceptions = []
+        if isinstance(tb_or_exc, BaseException):
+            traceback, current = tb_or_exc.__traceback__, tb_or_exc
+
+            while current is not None:
+                if current in _exceptions:
+                    break
+                _exceptions.append(current)
+                if current.__cause__ is not None:
+                    current = current.__cause__
+                elif (
+                    current.__context__ is not None and not current.__suppress_context__
+                ):
+                    current = current.__context__
+
+                if len(_exceptions) >= self.MAX_CHAINED_EXCEPTION_DEPTH:
+                    self.message(
+                        f"More than {self.MAX_CHAINED_EXCEPTION_DEPTH}"
+                        " chained exceptions found, not all exceptions"
+                        "will be browsable with `exceptions`."
+                    )
+                    break
+        else:
+            traceback = tb_or_exc
+        return tuple(reversed(_exceptions)), traceback
+
+    @contextmanager
+    def _hold_exceptions(self, exceptions):
+        """
+        Context manager to ensure proper cleaning of exceptions references
+
+        When given a chained exception instead of a traceback,
+        pdb may hold references to many objects which may leak memory.
+
+        We use this context manager to make sure everything is properly cleaned
+
+        """
+        try:
+            self._chained_exceptions = exceptions
+            self._chained_exception_index = len(exceptions) - 1
+            yield
+        finally:
+            # we can't put those in forget as otherwise they would
+            # be cleared on exception change
+            self._chained_exceptions = tuple()
+            self._chained_exception_index = 0
+
+    def interaction(self, frame, tb_or_exc):
         # Restore the previous signal handler at the Pdb prompt.
         if Pdb._previous_sigint_handler:
             try:
@@ -422,14 +518,19 @@ def interaction(self, frame, traceback):
                 pass
             else:
                 Pdb._previous_sigint_handler = None
-        if self.setup(frame, traceback):
-            # no interaction desired at this time (happens if .pdbrc contains
-            # a command like "continue")
+
+        _chained_exceptions, tb = self._get_tb_and_exceptions(tb_or_exc)
+        if isinstance(tb_or_exc, BaseException):
+            assert tb is not None, "main exception must have a traceback"
+        with self._hold_exceptions(_chained_exceptions):
+            if self.setup(frame, tb):
+                # no interaction desired at this time (happens if .pdbrc contains
+                # a command like "continue")
+                self.forget()
+                return
+            self.print_stack_entry(self.stack[self.curindex])
+            self._cmdloop()
             self.forget()
-            return
-        self.print_stack_entry(self.stack[self.curindex])
-        self._cmdloop()
-        self.forget()
 
     def displayhook(self, obj):
         """Custom displayhook for the exec in default(), which prevents
@@ -439,12 +540,52 @@ def displayhook(self, obj):
         if obj is not None:
             self.message(repr(obj))
 
+    @contextmanager
+    def _disable_tab_completion(self):
+        if self.use_rawinput and self.completekey == 'tab':
+            try:
+                import readline
+            except ImportError:
+                yield
+                return
+            try:
+                readline.parse_and_bind('tab: self-insert')
+                yield
+            finally:
+                readline.parse_and_bind('tab: complete')
+        else:
+            yield
+
     def default(self, line):
         if line[:1] == '!': line = line[1:].strip()
         locals = self.curframe_locals
         globals = self.curframe.f_globals
         try:
-            code = compile(line + '\n', '<stdin>', 'single')
+            if (code := codeop.compile_command(line + '\n', '<stdin>', 'single')) is None:
+                # Multi-line mode
+                with self._disable_tab_completion():
+                    buffer = line
+                    continue_prompt = "...   "
+                    while (code := codeop.compile_command(buffer, '<stdin>', 'single')) is None:
+                        if self.use_rawinput:
+                            try:
+                                line = input(continue_prompt)
+                            except (EOFError, KeyboardInterrupt):
+                                self.lastcmd = ""
+                                print('\n')
+                                return
+                        else:
+                            self.stdout.write(continue_prompt)
+                            self.stdout.flush()
+                            line = self.stdin.readline()
+                            if not len(line):
+                                self.lastcmd = ""
+                                self.stdout.write('\n')
+                                self.stdout.flush()
+                                return
+                            else:
+                                line = line.rstrip('\r\n')
+                        buffer += '\n' + line
             save_stdout = sys.stdout
             save_stdin = sys.stdin
             save_displayhook = sys.displayhook
@@ -467,11 +608,20 @@ def precmd(self, line):
         args = line.split()
         while args[0] in self.aliases:
             line = self.aliases[args[0]]
-            ii = 1
-            for tmpArg in args[1:]:
-                line = line.replace("%" + str(ii),
-                                      tmpArg)
-                ii += 1
+            for idx in range(1, 10):
+                if f'%{idx}' in line:
+                    if idx >= len(args):
+                        self.error(f"Not enough arguments for alias '{args[0]}'")
+                        # This is a no-op
+                        return "!"
+                    line = line.replace(f'%{idx}', args[idx])
+                elif '%*' not in line:
+                    if idx < len(args):
+                        self.error(f"Too many arguments for alias '{args[0]}'")
+                        # This is a no-op
+                        return "!"
+                    break
+
             line = line.replace("%*", ' '.join(args[1:]))
             args = line.split()
         # split into ';;' separated commands
@@ -486,6 +636,7 @@ def precmd(self, line):
 
         # Replace all the convenience variables
         line = re.sub(r'\$([a-zA-Z_][a-zA-Z0-9_]*)', r'__pdb_convenience_variables["\1"]', line)
+
         return line
 
     def onecmd(self, line):
@@ -530,8 +681,8 @@ def handle_command_def(self, line):
 
     # interface abstraction functions
 
-    def message(self, msg):
-        print(msg, file=self.stdout)
+    def message(self, msg, end='\n'):
+        print(msg, end=end, file=self.stdout)
 
     def error(self, msg):
         print('***', msg, file=self.stdout)
@@ -546,6 +697,18 @@ def set_convenience_variable(self, frame, name, value):
     # Generic completion functions.  Individual complete_foo methods can be
     # assigned below to one of these functions.
 
+    def completenames(self, text, line, begidx, endidx):
+        # Overwrite completenames() of cmd so for the command completion,
+        # if no current command matches, check for expressions as well
+        commands = super().completenames(text, line, begidx, endidx)
+        for alias in self.aliases:
+            if alias.startswith(text):
+                commands.append(alias)
+        if commands:
+            return commands
+        else:
+            return self._complete_expression(text, line, begidx, endidx)
+
     def _complete_location(self, text, line, begidx, endidx):
         # Complete a file/module/function location for break/tbreak/clear.
         if line.strip().endswith((':', ',')):
@@ -580,6 +743,10 @@ def _complete_expression(self, text, line, begidx, endidx):
         # complete builtins, and they clutter the namespace quite heavily, so we
         # leave them out.
         ns = {**self.curframe.f_globals, **self.curframe_locals}
+        if text.startswith("$"):
+            # Complete convenience variables
+            conv_vars = self.curframe.f_globals.get('__pdb_convenience_variables', {})
+            return [f"${name}" for name in conv_vars if name.startswith(text[1:])]
         if '.' in text:
             # Walk an attribute chain up to the last part, similar to what
             # rlcompleter does.  This will bail if any of the parts are not
@@ -644,7 +811,7 @@ def do_commands(self, arg):
             try:
                 bnum = int(arg)
             except:
-                self.error("Usage: commands [bnum]\n        ...\n        end")
+                self._print_invalid_arg(arg)
                 return
         try:
             self.get_bpbynumber(bnum)
@@ -757,7 +924,7 @@ def do_break(self, arg, temporary = 0):
                     #use co_name to identify the bkpt (function names
                     #could be aliased, but co_name is invariant)
                     funcname = code.co_name
-                    lineno = code.co_firstlineno
+                    lineno = self._find_first_executable_line(code)
                     filename = code.co_filename
                 except:
                     # last thing to try
@@ -860,6 +1027,23 @@ def checkline(self, filename, lineno):
             return 0
         return lineno
 
+    def _find_first_executable_line(self, code):
+        """ Try to find the first executable line of the code object.
+
+        Equivalently, find the line number of the instruction that's
+        after RESUME
+
+        Return code.co_firstlineno if no executable line is found.
+        """
+        prev = None
+        for instr in dis.get_instructions(code):
+            if prev is not None and prev.opname == 'RESUME':
+                if instr.positions.lineno is not None:
+                    return instr.positions.lineno
+                return code.co_firstlineno
+            prev = instr
+        return code.co_firstlineno
+
     def do_enable(self, arg):
         """enable bpnumber [bpnumber ...]
 
@@ -941,14 +1125,22 @@ def do_ignore(self, arg):
         condition evaluates to true.
         """
         args = arg.split()
-        try:
-            count = int(args[1].strip())
-        except:
+        if not args:
+            self.error('Breakpoint number expected')
+            return
+        if len(args) == 1:
             count = 0
+        elif len(args) == 2:
+            try:
+                count = int(args[1])
+            except ValueError:
+                self._print_invalid_arg(arg)
+                return
+        else:
+            self._print_invalid_arg(arg)
+            return
         try:
             bp = self.get_bpbynumber(args[0].strip())
-        except IndexError:
-            self.error('Breakpoint number expected')
         except ValueError as err:
             self.error(err)
         else:
@@ -1025,6 +1217,9 @@ def do_where(self, arg):
         An arrow indicates the "current frame", which determines the
         context of most commands.  'bt' is an alias for this command.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         self.print_stack_trace()
     do_w = do_where
     do_bt = do_where
@@ -1038,6 +1233,53 @@ def _select_frame(self, number):
         self.print_stack_entry(self.stack[self.curindex])
         self.lineno = None
 
+    def do_exceptions(self, arg):
+        """exceptions [number]
+
+        List or change current exception in an exception chain.
+
+        Without arguments, list all the current exception in the exception
+        chain. Exceptions will be numbered, with the current exception indicated
+        with an arrow.
+
+        If given an integer as argument, switch to the exception at that index.
+        """
+        if not self._chained_exceptions:
+            self.message(
+                "Did not find chained exceptions. To move between"
+                " exceptions, pdb/post_mortem must be given an exception"
+                " object rather than a traceback."
+            )
+            return
+        if not arg:
+            for ix, exc in enumerate(self._chained_exceptions):
+                prompt = ">" if ix == self._chained_exception_index else " "
+                rep = repr(exc)
+                if len(rep) > 80:
+                    rep = rep[:77] + "..."
+                indicator = (
+                    "  -"
+                    if self._chained_exceptions[ix].__traceback__ is None
+                    else f"{ix:>3}"
+                )
+                self.message(f"{prompt} {indicator} {rep}")
+        else:
+            try:
+                number = int(arg)
+            except ValueError:
+                self.error("Argument must be an integer")
+                return
+            if 0 <= number < len(self._chained_exceptions):
+                if self._chained_exceptions[number].__traceback__ is None:
+                    self.error("This exception does not have a traceback, cannot jump to it")
+                    return
+
+                self._chained_exception_index = number
+                self.setup(None, self._chained_exceptions[number].__traceback__)
+                self.print_stack_entry(self.stack[self.curindex])
+            else:
+                self.error("No exception with that number")
+
     def do_up(self, arg):
         """u(p) [count]
 
@@ -1112,6 +1354,9 @@ def do_step(self, arg):
         (either in a function that is called or in the current
         function).
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         self.set_step()
         return 1
     do_s = do_step
@@ -1122,6 +1367,9 @@ def do_next(self, arg):
         Continue execution until the next line in the current function
         is reached or it returns.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         self.set_next(self.curframe)
         return 1
     do_n = do_next
@@ -1153,6 +1401,9 @@ def do_return(self, arg):
 
         Continue execution until the current function returns.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         self.set_return(self.curframe)
         return 1
     do_r = do_return
@@ -1162,6 +1413,9 @@ def do_continue(self, arg):
 
         Continue execution, only stop when a breakpoint is encountered.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         if not self.nosigint:
             try:
                 Pdb._previous_sigint_handler = \
@@ -1256,6 +1510,9 @@ def do_args(self, arg):
 
         Print the argument list of the current function.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         co = self.curframe.f_code
         dict = self.curframe_locals
         n = co.co_argcount + co.co_kwonlyargcount
@@ -1264,7 +1521,7 @@ def do_args(self, arg):
         for i in range(n):
             name = co.co_varnames[i]
             if name in dict:
-                self.message('%s = %r' % (name, dict[name]))
+                self.message('%s = %s' % (name, self._safe_repr(dict[name], name)))
             else:
                 self.message('%s = *** undefined ***' % (name,))
     do_a = do_args
@@ -1274,8 +1531,11 @@ def do_retval(self, arg):
 
         Print the return value for the last return of a function.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         if '__return__' in self.curframe_locals:
-            self.message(repr(self.curframe_locals['__return__']))
+            self.message(self._safe_repr(self.curframe_locals['__return__'], "retval"))
         else:
             self.error('Not yet returned!')
     do_rv = do_retval
@@ -1310,6 +1570,12 @@ def _msg_val_func(self, arg, func):
         except:
             self._error_exc()
 
+    def _safe_repr(self, obj, expr):
+        try:
+            return repr(obj)
+        except Exception as e:
+            return _rstr(f"*** repr({expr}) failed: {self._format_exc(e)} ***")
+
     def do_p(self, arg):
         """p expression
 
@@ -1390,6 +1656,9 @@ def do_longlist(self, arg):
 
         List the whole source code for the current function or frame.
         """
+        if arg:
+            self._print_invalid_arg(arg)
+            return
         filename = self.curframe.f_code.co_filename
         breaklist = self.get_file_breaks(filename)
         try:
@@ -1486,8 +1755,8 @@ def do_display(self, arg):
         if not arg:
             if self.displaying:
                 self.message('Currently displaying:')
-                for item in self.displaying.get(self.curframe, {}).items():
-                    self.message('%s: %r' % item)
+                for key, val in self.displaying.get(self.curframe, {}).items():
+                    self.message('%s: %s' % (key, self._safe_repr(val, key)))
             else:
                 self.message('No expression is being displayed')
         else:
@@ -1496,7 +1765,7 @@ def do_display(self, arg):
             else:
                 val = self._getval_except(arg)
                 self.displaying.setdefault(self.curframe, {})[arg] = val
-                self.message('display %s: %r' % (arg, val))
+                self.message('display %s: %s' % (arg, self._safe_repr(val, arg)))
 
     complete_display = _complete_expression
 
@@ -1526,7 +1795,9 @@ def do_interact(self, arg):
         contains all the (global and local) names found in the current scope.
         """
         ns = {**self.curframe.f_globals, **self.curframe_locals}
-        code.interact("*interactive*", local=ns)
+        console = _PdbInteractiveConsole(ns, message=self.message)
+        console.interact(banner="*pdb interact start*",
+                         exitmsg="*exit from pdb interact command*")
 
     def do_alias(self, arg):
         """alias [name [command]]
@@ -1559,10 +1830,24 @@ def do_alias(self, arg):
             for alias in keys:
                 self.message("%s = %s" % (alias, self.aliases[alias]))
             return
-        if args[0] in self.aliases and len(args) == 1:
-            self.message("%s = %s" % (args[0], self.aliases[args[0]]))
+        if len(args) == 1:
+            if args[0] in self.aliases:
+                self.message("%s = %s" % (args[0], self.aliases[args[0]]))
+            else:
+                self.error(f"Unknown alias '{args[0]}'")
         else:
-            self.aliases[args[0]] = ' '.join(args[1:])
+            # Do a validation check to make sure no replaceable parameters
+            # are skipped if %* is not used.
+            alias = ' '.join(args[1:])
+            if '%*' not in alias:
+                consecutive = True
+                for idx in range(1, 10):
+                    if f'%{idx}' not in alias:
+                        consecutive = False
+                    if f'%{idx}' in alias and not consecutive:
+                        self.error("Replaceable parameters must be consecutive")
+                        return
+            self.aliases[args[0]] = alias
 
     def do_unalias(self, arg):
         """unalias name
@@ -1570,7 +1855,9 @@ def do_unalias(self, arg):
         Delete the specified alias.
         """
         args = arg.split()
-        if len(args) == 0: return
+        if len(args) == 0:
+            self._print_invalid_arg(arg)
+            return
         if args[0] in self.aliases:
             del self.aliases[args[0]]
 
@@ -1723,7 +2010,7 @@ def _getsourcelines(self, obj):
         lineno = max(1, lineno)
         return lines, lineno
 
-    def _help_message_from_doc(self, doc):
+    def _help_message_from_doc(self, doc, usage_only=False):
         lines = [line.strip() for line in doc.rstrip().splitlines()]
         if not lines:
             return "No help message found."
@@ -1739,10 +2026,24 @@ def _help_message_from_doc(self, doc):
             elif i < usage_end:
                 prefix = "       "
             else:
+                if usage_only:
+                    break
                 prefix = ""
             formatted.append(indent + prefix + line)
         return "\n".join(formatted)
 
+    def _print_invalid_arg(self, arg):
+        """Return the usage string for a function."""
+
+        self.error(f"Invalid argument: {arg}")
+
+        # Yes it's a bit hacky. Get the caller name, get the method based on
+        # that name, and get the docstring from that method.
+        # This should NOT fail if the caller is a method of this class.
+        doc = inspect.getdoc(getattr(self, sys._getframe(1).f_code.co_name))
+        if doc is not None:
+            self.message(self._help_message_from_doc(doc, usage_only=True))
+
 # Collect all command help into docstring, if not run with -OO
 
 if __doc__ is not None:
@@ -1818,11 +2119,23 @@ def set_trace(*, header=None):
 # Post-Mortem interface
 
 def post_mortem(t=None):
-    """Enter post-mortem debugging of the given *traceback* object.
+    """Enter post-mortem debugging of the given *traceback*, or *exception*
+    object.
 
     If no traceback is given, it uses the one of the exception that is
     currently being handled (an exception must be being handled if the
     default is to be used).
+
+    If `t` is an exception object, the `exceptions` command makes it possible to
+    list and inspect its chained exceptions (if any).
+    """
+    return _post_mortem(t, Pdb())
+
+
+def _post_mortem(t, pdb_instance):
+    """
+    Private version of post_mortem, which allow to pass a pdb instance
+    for testing purposes.
     """
     # handling the default
     if t is None:
@@ -1830,21 +2143,17 @@ def post_mortem(t=None):
         if exc is not None:
             t = exc.__traceback__
 
-    if t is None:
+    if t is None or (isinstance(t, BaseException) and t.__traceback__ is None):
         raise ValueError("A valid traceback must be passed if no "
                          "exception is being handled")
 
-    p = Pdb()
-    p.reset()
-    p.interaction(None, t)
+    pdb_instance.reset()
+    pdb_instance.interaction(None, t)
+
 
 def pm():
-    """Enter post-mortem debugging of the traceback found in sys.last_traceback."""
-    if hasattr(sys, 'last_exc'):
-        tb = sys.last_exc.__traceback__
-    else:
-        tb = sys.last_traceback
-    post_mortem(tb)
+    """Enter post-mortem debugging of the traceback found in sys.last_exc."""
+    post_mortem(sys.last_exc)
 
 
 # Main program for testing
@@ -1860,8 +2169,6 @@ def help():
     pydoc.pager(__doc__)
 
 _usage = """\
-usage: pdb.py [-c command] ... [-m module | pyfile] [arg] ...
-
 Debug the Python program given by pyfile. Alternatively,
 an executable module or package to debug can be specified using
 the -m switch.
@@ -1876,40 +2183,47 @@ def help():
 
 
 def main():
-    import getopt
-
-    opts, args = getopt.getopt(sys.argv[1:], 'mhc:', ['help', 'command='])
-
-    if not args:
-        print(_usage)
+    import argparse
+
+    parser = argparse.ArgumentParser(prog="pdb",
+                                     description=_usage,
+                                     formatter_class=argparse.RawDescriptionHelpFormatter,
+                                     allow_abbrev=False)
+
+    parser.add_argument('-c', '--command', action='append', default=[], metavar='command')
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument('-m', metavar='module')
+    group.add_argument('pyfile', nargs='?')
+    parser.add_argument('args', nargs="*")
+
+    if len(sys.argv) == 1:
+        # If no arguments were given (python -m pdb), print the whole help message.
+        # Without this check, argparse would only complain about missing required arguments.
+        parser.print_help()
         sys.exit(2)
 
-    if any(opt in ['-h', '--help'] for opt, optarg in opts):
-        print(_usage)
-        sys.exit()
-
-    commands = [optarg for opt, optarg in opts if opt in ['-c', '--command']]
+    opts = parser.parse_args()
 
-    module_indicated = any(opt in ['-m'] for opt, optarg in opts)
-    cls = _ModuleTarget if module_indicated else _ScriptTarget
-    target = cls(args[0])
+    if opts.m:
+        file = opts.m
+        target = _ModuleTarget(file)
+    else:
+        file = opts.pyfile
+        target = _ScriptTarget(file)
 
     target.check()
 
-    sys.argv[:] = args      # Hide "pdb.py" and pdb options from argument list
+    sys.argv[:] = [file] + opts.args  # Hide "pdb.py" and pdb options from argument list
 
     # Note on saving/restoring sys.argv: it's a good idea when sys.argv was
     # modified by the script being debugged. It's a bad idea when it was
     # changed by the user from the command line. There is a "restart" command
     # which allows explicit specification of command line arguments.
     pdb = Pdb()
-    pdb.rcLines.extend(commands)
+    pdb.rcLines.extend(opts.command)
     while True:
         try:
             pdb._run(target)
-            if pdb._user_requested_quit:
-                break
-            print("The program finished and will be restarted")
         except Restart:
             print("Restarting", target, "with arguments:")
             print("\t" + " ".join(sys.argv[1:]))
@@ -1917,17 +2231,16 @@ def main():
             # In most cases SystemExit does not warrant a post-mortem session.
             print("The program exited via sys.exit(). Exit status:", end=' ')
             print(e)
-        except SyntaxError:
-            traceback.print_exc()
-            sys.exit(1)
         except BaseException as e:
             traceback.print_exc()
             print("Uncaught exception. Entering post mortem debugging")
             print("Running 'cont' or 'step' will restart the program")
-            t = e.__traceback__
-            pdb.interaction(None, t)
+            pdb.interaction(None, e)
             print("Post mortem debugger finished. The " + target +
                   " will be restarted")
+        if pdb._user_requested_quit:
+            break
+        print("The program finished and will be restarted")
 
 
 # When invoked as main program, invoke the debugger on a script
diff --git a/Lib/pickle.py b/Lib/pickle.py
index fe86f80f51d3b9..4f5ad5b71e8899 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -396,6 +396,8 @@ def decode_long(data):
     return int.from_bytes(data, byteorder='little', signed=True)
 
 
+_NoValue = object()
+
 # Pickling machinery
 
 class _Pickler:
@@ -542,8 +544,8 @@ def save(self, obj, save_persistent_id=True):
             return
 
         rv = NotImplemented
-        reduce = getattr(self, "reducer_override", None)
-        if reduce is not None:
+        reduce = getattr(self, "reducer_override", _NoValue)
+        if reduce is not _NoValue:
             rv = reduce(obj)
 
         if rv is NotImplemented:
@@ -556,8 +558,8 @@ def save(self, obj, save_persistent_id=True):
 
             # Check private dispatch table if any, or else
             # copyreg.dispatch_table
-            reduce = getattr(self, 'dispatch_table', dispatch_table).get(t)
-            if reduce is not None:
+            reduce = getattr(self, 'dispatch_table', dispatch_table).get(t, _NoValue)
+            if reduce is not _NoValue:
                 rv = reduce(obj)
             else:
                 # Check for a class with a custom metaclass; treat as regular
@@ -567,12 +569,12 @@ def save(self, obj, save_persistent_id=True):
                     return
 
                 # Check for a __reduce_ex__ method, fall back to __reduce__
-                reduce = getattr(obj, "__reduce_ex__", None)
-                if reduce is not None:
+                reduce = getattr(obj, "__reduce_ex__", _NoValue)
+                if reduce is not _NoValue:
                     rv = reduce(self.proto)
                 else:
-                    reduce = getattr(obj, "__reduce__", None)
-                    if reduce is not None:
+                    reduce = getattr(obj, "__reduce__", _NoValue)
+                    if reduce is not _NoValue:
                         rv = reduce()
                     else:
                         raise PicklingError("Can't pickle %r object: %r" %
@@ -1705,8 +1707,8 @@ def load_build(self):
         stack = self.stack
         state = stack.pop()
         inst = stack[-1]
-        setstate = getattr(inst, "__setstate__", None)
-        if setstate is not None:
+        setstate = getattr(inst, "__setstate__", _NoValue)
+        if setstate is not _NoValue:
             setstate(state)
             return
         slotstate = None
diff --git a/Lib/pipes.py b/Lib/pipes.py
deleted file mode 100644
index 61d63b48d3e4c5..00000000000000
--- a/Lib/pipes.py
+++ /dev/null
@@ -1,250 +0,0 @@
-"""Conversion pipeline templates.
-
-The problem:
-------------
-
-Suppose you have some data that you want to convert to another format,
-such as from GIF image format to PPM image format.  Maybe the
-conversion involves several steps (e.g. piping it through compress or
-uuencode).  Some of the conversion steps may require that their input
-is a disk file, others may be able to read standard input; similar for
-their output.  The input to the entire conversion may also be read
-from a disk file or from an open file, and similar for its output.
-
-The module lets you construct a pipeline template by sticking one or
-more conversion steps together.  It will take care of creating and
-removing temporary files if they are necessary to hold intermediate
-data.  You can then use the template to do conversions from many
-different sources to many different destinations.  The temporary
-file names used are different each time the template is used.
-
-The templates are objects so you can create templates for many
-different conversion steps and store them in a dictionary, for
-instance.
-
-
-Directions:
------------
-
-To create a template:
-    t = Template()
-
-To add a conversion step to a template:
-   t.append(command, kind)
-where kind is a string of two characters: the first is '-' if the
-command reads its standard input or 'f' if it requires a file; the
-second likewise for the output. The command must be valid /bin/sh
-syntax.  If input or output files are required, they are passed as
-$IN and $OUT; otherwise, it must be  possible to use the command in
-a pipeline.
-
-To add a conversion step at the beginning:
-   t.prepend(command, kind)
-
-To convert a file to another file using a template:
-  sts = t.copy(infile, outfile)
-If infile or outfile are the empty string, standard input is read or
-standard output is written, respectively.  The return value is the
-exit status of the conversion pipeline.
-
-To open a file for reading or writing through a conversion pipeline:
-   fp = t.open(file, mode)
-where mode is 'r' to read the file, or 'w' to write it -- just like
-for the built-in function open() or for os.popen().
-
-To create a new template object initialized to a given one:
-   t2 = t.clone()
-"""                                     # '
-
-
-import re
-import os
-import tempfile
-import warnings
-# we import the quote function rather than the module for backward compat
-# (quote used to be an undocumented but used function in pipes)
-from shlex import quote
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-__all__ = ["Template"]
-
-# Conversion step kinds
-
-FILEIN_FILEOUT = 'ff'                   # Must read & write real files
-STDIN_FILEOUT  = '-f'                   # Must write a real file
-FILEIN_STDOUT  = 'f-'                   # Must read a real file
-STDIN_STDOUT   = '--'                   # Normal pipeline element
-SOURCE         = '.-'                   # Must be first, writes stdout
-SINK           = '-.'                   # Must be last, reads stdin
-
-stepkinds = [FILEIN_FILEOUT, STDIN_FILEOUT, FILEIN_STDOUT, STDIN_STDOUT, \
-             SOURCE, SINK]
-
-
-class Template:
-    """Class representing a pipeline template."""
-
-    def __init__(self):
-        """Template() returns a fresh pipeline template."""
-        self.debugging = 0
-        self.reset()
-
-    def __repr__(self):
-        """t.__repr__() implements repr(t)."""
-        return '<Template instance, steps=%r>' % (self.steps,)
-
-    def reset(self):
-        """t.reset() restores a pipeline template to its initial state."""
-        self.steps = []
-
-    def clone(self):
-        """t.clone() returns a new pipeline template with identical
-        initial state as the current one."""
-        t = Template()
-        t.steps = self.steps[:]
-        t.debugging = self.debugging
-        return t
-
-    def debug(self, flag):
-        """t.debug(flag) turns debugging on or off."""
-        self.debugging = flag
-
-    def append(self, cmd, kind):
-        """t.append(cmd, kind) adds a new step at the end."""
-        if not isinstance(cmd, str):
-            raise TypeError('Template.append: cmd must be a string')
-        if kind not in stepkinds:
-            raise ValueError('Template.append: bad kind %r' % (kind,))
-        if kind == SOURCE:
-            raise ValueError('Template.append: SOURCE can only be prepended')
-        if self.steps and self.steps[-1][1] == SINK:
-            raise ValueError('Template.append: already ends with SINK')
-        if kind[0] == 'f' and not re.search(r'\$IN\b', cmd):
-            raise ValueError('Template.append: missing $IN in cmd')
-        if kind[1] == 'f' and not re.search(r'\$OUT\b', cmd):
-            raise ValueError('Template.append: missing $OUT in cmd')
-        self.steps.append((cmd, kind))
-
-    def prepend(self, cmd, kind):
-        """t.prepend(cmd, kind) adds a new step at the front."""
-        if not isinstance(cmd, str):
-            raise TypeError('Template.prepend: cmd must be a string')
-        if kind not in stepkinds:
-            raise ValueError('Template.prepend: bad kind %r' % (kind,))
-        if kind == SINK:
-            raise ValueError('Template.prepend: SINK can only be appended')
-        if self.steps and self.steps[0][1] == SOURCE:
-            raise ValueError('Template.prepend: already begins with SOURCE')
-        if kind[0] == 'f' and not re.search(r'\$IN\b', cmd):
-            raise ValueError('Template.prepend: missing $IN in cmd')
-        if kind[1] == 'f' and not re.search(r'\$OUT\b', cmd):
-            raise ValueError('Template.prepend: missing $OUT in cmd')
-        self.steps.insert(0, (cmd, kind))
-
-    def open(self, file, rw):
-        """t.open(file, rw) returns a pipe or file object open for
-        reading or writing; the file is the other end of the pipeline."""
-        if rw == 'r':
-            return self.open_r(file)
-        if rw == 'w':
-            return self.open_w(file)
-        raise ValueError('Template.open: rw must be \'r\' or \'w\', not %r'
-                         % (rw,))
-
-    def open_r(self, file):
-        """t.open_r(file) and t.open_w(file) implement
-        t.open(file, 'r') and t.open(file, 'w') respectively."""
-        if not self.steps:
-            return open(file, 'r')
-        if self.steps[-1][1] == SINK:
-            raise ValueError('Template.open_r: pipeline ends width SINK')
-        cmd = self.makepipeline(file, '')
-        return os.popen(cmd, 'r')
-
-    def open_w(self, file):
-        if not self.steps:
-            return open(file, 'w')
-        if self.steps[0][1] == SOURCE:
-            raise ValueError('Template.open_w: pipeline begins with SOURCE')
-        cmd = self.makepipeline('', file)
-        return os.popen(cmd, 'w')
-
-    def copy(self, infile, outfile):
-        return os.system(self.makepipeline(infile, outfile))
-
-    def makepipeline(self, infile, outfile):
-        cmd = makepipeline(infile, self.steps, outfile)
-        if self.debugging:
-            print(cmd)
-            cmd = 'set -x; ' + cmd
-        return cmd
-
-
-def makepipeline(infile, steps, outfile):
-    # Build a list with for each command:
-    # [input filename or '', command string, kind, output filename or '']
-
-    list = []
-    for cmd, kind in steps:
-        list.append(['', cmd, kind, ''])
-    #
-    # Make sure there is at least one step
-    #
-    if not list:
-        list.append(['', 'cat', '--', ''])
-    #
-    # Take care of the input and output ends
-    #
-    [cmd, kind] = list[0][1:3]
-    if kind[0] == 'f' and not infile:
-        list.insert(0, ['', 'cat', '--', ''])
-    list[0][0] = infile
-    #
-    [cmd, kind] = list[-1][1:3]
-    if kind[1] == 'f' and not outfile:
-        list.append(['', 'cat', '--', ''])
-    list[-1][-1] = outfile
-    #
-    # Invent temporary files to connect stages that need files
-    #
-    garbage = []
-    for i in range(1, len(list)):
-        lkind = list[i-1][2]
-        rkind = list[i][2]
-        if lkind[1] == 'f' or rkind[0] == 'f':
-            (fd, temp) = tempfile.mkstemp()
-            os.close(fd)
-            garbage.append(temp)
-            list[i-1][-1] = list[i][0] = temp
-    #
-    for item in list:
-        [inf, cmd, kind, outf] = item
-        if kind[1] == 'f':
-            cmd = 'OUT=' + quote(outf) + '; ' + cmd
-        if kind[0] == 'f':
-            cmd = 'IN=' + quote(inf) + '; ' + cmd
-        if kind[0] == '-' and inf:
-            cmd = cmd + ' <' + quote(inf)
-        if kind[1] == '-' and outf:
-            cmd = cmd + ' >' + quote(outf)
-        item[1] = cmd
-    #
-    cmdlist = list[0][1]
-    for item in list[1:]:
-        [cmd, kind] = item[1:3]
-        if item[0] == '':
-            if 'f' in kind:
-                cmd = '{ ' + cmd + '; }'
-            cmdlist = cmdlist + ' |\n' + cmd
-        else:
-            cmdlist = cmdlist + '\n' + cmd
-    #
-    if garbage:
-        rmcmd = 'rm -f'
-        for file in garbage:
-            rmcmd = rmcmd + ' ' + quote(file)
-        trapcmd = 'trap ' + quote(rmcmd + '; exit') + ' 1 2 3 13 14 15'
-        cmdlist = trapcmd + '\n' + cmdlist + '\n' + rmcmd
-    #
-    return cmdlist
diff --git a/Lib/platform.py b/Lib/platform.py
index 7bb222088d5061..75aa55510858fd 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -118,6 +118,10 @@
 import sys
 import functools
 import itertools
+try:
+    import _wmi
+except ImportError:
+    _wmi = None
 
 ### Globals & Constants
 
@@ -312,24 +316,26 @@ def _syscmd_ver(system='', release='', version='',
         version = _norm_version(version)
     return system, release, version
 
-try:
-    import _wmi
-except ImportError:
-    def _wmi_query(*keys):
+
+def _wmi_query(table, *keys):
+    global _wmi
+    if not _wmi:
         raise OSError("not supported")
-else:
-    def _wmi_query(table, *keys):
-        table = {
-            "OS": "Win32_OperatingSystem",
-            "CPU": "Win32_Processor",
-        }[table]
+    table = {
+        "OS": "Win32_OperatingSystem",
+        "CPU": "Win32_Processor",
+    }[table]
+    try:
         data = _wmi.exec_query("SELECT {} FROM {}".format(
             ",".join(keys),
             table,
         )).split("\0")
-        split_data = (i.partition("=") for i in data)
-        dict_data = {i[0]: i[2] for i in split_data}
-        return (dict_data[k] for k in keys)
+    except OSError:
+        _wmi = None
+        raise OSError("not supported")
+    split_data = (i.partition("=") for i in data)
+    dict_data = {i[0]: i[2] for i in split_data}
+    return (dict_data[k] for k in keys)
 
 
 _WIN32_CLIENT_RELEASES = [
diff --git a/Lib/poplib.py b/Lib/poplib.py
index 9a5ef03c983103..1a1629d175b6d9 100644
--- a/Lib/poplib.py
+++ b/Lib/poplib.py
@@ -451,7 +451,6 @@ def stls(self, context=None):
     __all__.append("POP3_SSL")
 
 if __name__ == "__main__":
-    import sys
     a = POP3(sys.argv[1])
     print(a.getwelcome())
     a.user(sys.argv[2])
diff --git a/Lib/pty.py b/Lib/pty.py
index 6571050886bd1d..1d97994abef3c8 100644
--- a/Lib/pty.py
+++ b/Lib/pty.py
@@ -115,12 +115,6 @@ def fork():
     # Parent and child process.
     return pid, master_fd
 
-def _writen(fd, data):
-    """Write all the data to a descriptor."""
-    while data:
-        n = os.write(fd, data)
-        data = data[n:]
-
 def _read(fd):
     """Default read function."""
     return os.read(fd, 1024)
@@ -130,9 +124,42 @@ def _copy(master_fd, master_read=_read, stdin_read=_read):
     Copies
             pty master -> standard output   (master_read)
             standard input -> pty master    (stdin_read)"""
-    fds = [master_fd, STDIN_FILENO]
-    while fds:
-        rfds, _wfds, _xfds = select(fds, [], [])
+    if os.get_blocking(master_fd):
+        # If we write more than tty/ndisc is willing to buffer, we may block
+        # indefinitely. So we set master_fd to non-blocking temporarily during
+        # the copy operation.
+        os.set_blocking(master_fd, False)
+        try:
+            _copy(master_fd, master_read=master_read, stdin_read=stdin_read)
+        finally:
+            # restore blocking mode for backwards compatibility
+            os.set_blocking(master_fd, True)
+        return
+    high_waterlevel = 4096
+    stdin_avail = master_fd != STDIN_FILENO
+    stdout_avail = master_fd != STDOUT_FILENO
+    i_buf = b''
+    o_buf = b''
+    while 1:
+        rfds = []
+        wfds = []
+        if stdin_avail and len(i_buf) < high_waterlevel:
+            rfds.append(STDIN_FILENO)
+        if stdout_avail and len(o_buf) < high_waterlevel:
+            rfds.append(master_fd)
+        if stdout_avail and len(o_buf) > 0:
+            wfds.append(STDOUT_FILENO)
+        if len(i_buf) > 0:
+            wfds.append(master_fd)
+
+        rfds, wfds, _xfds = select(rfds, wfds, [])
+
+        if STDOUT_FILENO in wfds:
+            try:
+                n = os.write(STDOUT_FILENO, o_buf)
+                o_buf = o_buf[n:]
+            except OSError:
+                stdout_avail = False
 
         if master_fd in rfds:
             # Some OSes signal EOF by returning an empty byte string,
@@ -144,15 +171,18 @@ def _copy(master_fd, master_read=_read, stdin_read=_read):
             if not data:  # Reached EOF.
                 return    # Assume the child process has exited and is
                           # unreachable, so we clean up.
-            else:
-                os.write(STDOUT_FILENO, data)
+            o_buf += data
+
+        if master_fd in wfds:
+            n = os.write(master_fd, i_buf)
+            i_buf = i_buf[n:]
 
-        if STDIN_FILENO in rfds:
+        if stdin_avail and STDIN_FILENO in rfds:
             data = stdin_read(STDIN_FILENO)
             if not data:
-                fds.remove(STDIN_FILENO)
+                stdin_avail = False
             else:
-                _writen(master_fd, data)
+                i_buf += data
 
 def spawn(argv, master_read=_read, stdin_read=_read):
     """Create a spawned process."""
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 84e673a7f87f90..83c74a75cd1c00 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -197,6 +197,27 @@ def splitdoc(doc):
         return lines[0], '\n'.join(lines[2:])
     return '', '\n'.join(lines)
 
+def _getargspec(object):
+    try:
+        signature = inspect.signature(object)
+        if signature:
+            name = getattr(object, '__name__', '')
+            # <lambda> function are always single-line and should not be formatted
+            max_width = (80 - len(name)) if name != '<lambda>' else None
+            return signature.format(max_width=max_width)
+    except (ValueError, TypeError):
+        argspec = getattr(object, '__text_signature__', None)
+        if argspec:
+            if argspec[:2] == '($':
+                argspec = '(' + argspec[2:]
+            if getattr(object, '__self__', None) is not None:
+                # Strip the bound argument.
+                m = re.match(r'\(\w+(?:(?=\))|,\s*(?:/(?:(?=\))|,\s*))?)', argspec)
+                if m:
+                    argspec = '(' + argspec[m.end():]
+        return argspec
+    return None
+
 def classname(object, modname):
     """Get a class name and qualify it with a module name if necessary."""
     name = object.__name__
@@ -1003,14 +1024,9 @@ def spilldata(msg, attrs, predicate):
             title = title + '(%s)' % ', '.join(parents)
 
         decl = ''
-        try:
-            signature = inspect.signature(object)
-        except (ValueError, TypeError):
-            signature = None
-        if signature:
-            argspec = str(signature)
-            if argspec and argspec != '()':
-                decl = name + self.escape(argspec) + '\n\n'
+        argspec = _getargspec(object)
+        if argspec and argspec != '()':
+            decl = name + self.escape(argspec) + '\n\n'
 
         doc = getdoc(object)
         if decl:
@@ -1063,18 +1079,13 @@ def docroutine(self, object, name=None, mod=None,
                 anchor, name, reallink)
         argspec = None
         if inspect.isroutine(object):
-            try:
-                signature = inspect.signature(object)
-            except (ValueError, TypeError):
-                signature = None
-            if signature:
-                argspec = str(signature)
-                if realname == '<lambda>':
-                    title = '<strong>%s</strong> <em>lambda</em> ' % name
-                    # XXX lambda's won't usually have func_annotations['return']
-                    # since the syntax doesn't support but it is possible.
-                    # So removing parentheses isn't truly safe.
-                    argspec = argspec[1:-1] # remove parentheses
+            argspec = _getargspec(object)
+            if argspec and realname == '<lambda>':
+                title = '<strong>%s</strong> <em>lambda</em> ' % name
+                # XXX lambda's won't usually have func_annotations['return']
+                # since the syntax doesn't support but it is possible.
+                # So removing parentheses isn't truly safe.
+                argspec = argspec[1:-1] # remove parentheses
         if not argspec:
             argspec = '(...)'
 
@@ -1321,14 +1332,9 @@ def makename(c, m=object.__module__):
         contents = []
         push = contents.append
 
-        try:
-            signature = inspect.signature(object)
-        except (ValueError, TypeError):
-            signature = None
-        if signature:
-            argspec = str(signature)
-            if argspec and argspec != '()':
-                push(name + argspec + '\n')
+        argspec = _getargspec(object)
+        if argspec and argspec != '()':
+            push(name + argspec + '\n')
 
         doc = getdoc(object)
         if doc:
@@ -1492,18 +1498,13 @@ def docroutine(self, object, name=None, mod=None, cl=None):
         argspec = None
 
         if inspect.isroutine(object):
-            try:
-                signature = inspect.signature(object)
-            except (ValueError, TypeError):
-                signature = None
-            if signature:
-                argspec = str(signature)
-                if realname == '<lambda>':
-                    title = self.bold(name) + ' lambda '
-                    # XXX lambda's won't usually have func_annotations['return']
-                    # since the syntax doesn't support but it is possible.
-                    # So removing parentheses isn't truly safe.
-                    argspec = argspec[1:-1] # remove parentheses
+            argspec = _getargspec(object)
+            if argspec and realname == '<lambda>':
+                title = self.bold(name) + ' lambda '
+                # XXX lambda's won't usually have func_annotations['return']
+                # since the syntax doesn't support but it is possible.
+                # So removing parentheses isn't truly safe.
+                argspec = argspec[1:-1] # remove parentheses
         if not argspec:
             argspec = '(...)'
         decl = asyncqualifier + title + argspec + note
@@ -1780,12 +1781,21 @@ def render_doc(thing, title='Python Library Documentation: %s', forceload=0,
     return title % desc + '\n\n' + renderer.document(object, name)
 
 def doc(thing, title='Python Library Documentation: %s', forceload=0,
-        output=None):
+        output=None, is_cli=False):
     """Display text documentation, given an object or a path to an object."""
     if output is None:
-        pager(render_doc(thing, title, forceload))
+        try:
+            pager(render_doc(thing, title, forceload))
+        except ImportError as exc:
+            if is_cli:
+                raise
+            print(exc)
     else:
-        output.write(render_doc(thing, title, forceload, plaintext))
+        try:
+            s = render_doc(thing, title, forceload, plaintext)
+        except ImportError as exc:
+            s = str(exc)
+        output.write(s)
 
 def writedoc(thing, forceload=0):
     """Write HTML documentation to a file in the current directory."""
@@ -2044,7 +2054,7 @@ def getline(self, prompt):
             self.output.flush()
             return self.input.readline()
 
-    def help(self, request):
+    def help(self, request, is_cli=False):
         if isinstance(request, str):
             request = request.strip()
             if request == 'keywords': self.listkeywords()
@@ -2056,30 +2066,32 @@ def help(self, request):
             elif request in self.symbols: self.showsymbol(request)
             elif request in ['True', 'False', 'None']:
                 # special case these keywords since they are objects too
-                doc(eval(request), 'Help on %s:')
+                doc(eval(request), 'Help on %s:', is_cli=is_cli)
             elif request in self.keywords: self.showtopic(request)
             elif request in self.topics: self.showtopic(request)
-            elif request: doc(request, 'Help on %s:', output=self._output)
-            else: doc(str, 'Help on %s:', output=self._output)
+            elif request: doc(request, 'Help on %s:', output=self._output, is_cli=is_cli)
+            else: doc(str, 'Help on %s:', output=self._output, is_cli=is_cli)
         elif isinstance(request, Helper): self()
-        else: doc(request, 'Help on %s:', output=self._output)
+        else: doc(request, 'Help on %s:', output=self._output, is_cli=is_cli)
         self.output.write('\n')
 
     def intro(self):
-        self.output.write('''
-Welcome to Python {0}'s help utility!
-
-If this is your first time using Python, you should definitely check out
-the tutorial on the internet at https://docs.python.org/{0}/tutorial/.
+        self.output.write('''\
+Welcome to Python {0}'s help utility! If this is your first time using
+Python, you should definitely check out the tutorial at
+https://docs.python.org/{0}/tutorial/.
 
 Enter the name of any module, keyword, or topic to get help on writing
-Python programs and using Python modules.  To quit this help utility and
-return to the interpreter, just type "quit".
+Python programs and using Python modules.  To get a list of available
+modules, keywords, symbols, or topics, enter "modules", "keywords",
+"symbols", or "topics".
+
+Each module also comes with a one-line summary of what it does; to list
+the modules whose name or summary contain a given string such as "spam",
+enter "modules spam".
 
-To get a list of available modules, keywords, symbols, or topics, type
-"modules", "keywords", "symbols", or "topics".  Each module also comes
-with a one-line summary of what it does; to list the modules whose name
-or summary contain a given string such as "spam", type "modules spam".
+To quit this help utility and return to the interpreter,
+enter "q" or "quit".
 '''.format('%d.%d' % sys.version_info[:2]))
 
     def list(self, items, columns=4, width=80):
@@ -2800,7 +2812,7 @@ class BadUsage(Exception): pass
                     else:
                         writedoc(arg)
                 else:
-                    help.help(arg)
+                    help.help(arg, is_cli=True)
             except (ImportError, ErrorDuringImport) as value:
                 print(value)
                 sys.exit(1)
diff --git a/Lib/pydoc_data/topics.py b/Lib/pydoc_data/topics.py
index 3aaaee67fa35a6..7c1bdc4dff2ec4 100644
--- a/Lib/pydoc_data/topics.py
+++ b/Lib/pydoc_data/topics.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# Autogenerated by Sphinx on Tue Apr  4 17:52:21 2023
+# Autogenerated by Sphinx on Wed Nov 22 11:44:32 2023
+# as part of the release process.
 topics = {'assert': 'The "assert" statement\n'
            '**********************\n'
            '\n'
@@ -208,7 +209,7 @@
                'the\n'
                '  subscript must have a type compatible with the mapping’s key '
                'type,\n'
-               '  and the mapping is then asked to create a key/datum pair '
+               '  and the mapping is then asked to create a key/value pair '
                'which maps\n'
                '  the subscript to the assigned object.  This can either '
                'replace an\n'
@@ -538,77 +539,7 @@
           '  **PEP 492** - Coroutines with async and await syntax\n'
           '     The proposal that made coroutines a proper standalone concept '
           'in\n'
-          '     Python, and added supporting syntax.\n'
-          '\n'
-          '-[ Footnotes ]-\n'
-          '\n'
-          '[1] The exception is propagated to the invocation stack unless '
-          'there\n'
-          '    is a "finally" clause which happens to raise another '
-          'exception.\n'
-          '    That new exception causes the old one to be lost.\n'
-          '\n'
-          '[2] In pattern matching, a sequence is defined as one of the\n'
-          '    following:\n'
-          '\n'
-          '       * a class that inherits from "collections.abc.Sequence"\n'
-          '\n'
-          '       * a Python class that has been registered as\n'
-          '         "collections.abc.Sequence"\n'
-          '\n'
-          '       * a builtin class that has its (CPython) '
-          '"Py_TPFLAGS_SEQUENCE"\n'
-          '         bit set\n'
-          '\n'
-          '       * a class that inherits from any of the above\n'
-          '\n'
-          '    The following standard library classes are sequences:\n'
-          '\n'
-          '       * "array.array"\n'
-          '\n'
-          '       * "collections.deque"\n'
-          '\n'
-          '       * "list"\n'
-          '\n'
-          '       * "memoryview"\n'
-          '\n'
-          '       * "range"\n'
-          '\n'
-          '       * "tuple"\n'
-          '\n'
-          '    Note:\n'
-          '\n'
-          '      Subject values of type "str", "bytes", and "bytearray" do '
-          'not\n'
-          '      match sequence patterns.\n'
-          '\n'
-          '[3] In pattern matching, a mapping is defined as one of the '
-          'following:\n'
-          '\n'
-          '       * a class that inherits from "collections.abc.Mapping"\n'
-          '\n'
-          '       * a Python class that has been registered as\n'
-          '         "collections.abc.Mapping"\n'
-          '\n'
-          '       * a builtin class that has its (CPython) '
-          '"Py_TPFLAGS_MAPPING"\n'
-          '         bit set\n'
-          '\n'
-          '       * a class that inherits from any of the above\n'
-          '\n'
-          '    The standard library classes "dict" and '
-          '"types.MappingProxyType"\n'
-          '    are mappings.\n'
-          '\n'
-          '[4] A string literal appearing as the first statement in the '
-          'function\n'
-          '    body is transformed into the function’s "__doc__" attribute '
-          'and\n'
-          '    therefore the function’s *docstring*.\n'
-          '\n'
-          '[5] A string literal appearing as the first statement in the class\n'
-          '    body is transformed into the namespace’s "__doc__" item and\n'
-          '    therefore the class’s *docstring*.\n',
+          '     Python, and added supporting syntax.\n',
  'atom-identifiers': 'Identifiers (Names)\n'
                      '*******************\n'
                      '\n'
@@ -713,7 +644,7 @@
                      '"__getattr__()" would have\n'
                      '   no way to access other attributes of the instance.  '
                      'Note that at\n'
-                     '   least for instance variables, you can fake total '
+                     '   least for instance variables, you can take total '
                      'control by not\n'
                      '   inserting any values in the instance attribute '
                      'dictionary (but\n'
@@ -1075,9 +1006,7 @@
                      'for each\n'
                      '   instance.\n'
                      '\n'
-                     '\n'
-                     'Notes on using *__slots__*\n'
-                     '--------------------------\n'
+                     'Notes on using *__slots__*:\n'
                      '\n'
                      '* When inheriting from a class without *__slots__*, the '
                      '"__dict__" and\n'
@@ -1748,8 +1677,8 @@
           'standard\n'
           'type hierarchy):\n'
           '\n'
-          '   classdef    ::= [decorators] "class" classname [inheritance] ":" '
-          'suite\n'
+          '   classdef    ::= [decorators] "class" classname [type_params] '
+          '[inheritance] ":" suite\n'
           '   inheritance ::= "(" [argument_list] ")"\n'
           '   classname   ::= identifier\n'
           '\n'
@@ -1813,6 +1742,19 @@
           '"assignment_expression". Previously, the grammar was much more\n'
           'restrictive; see **PEP 614** for details.\n'
           '\n'
+          'A list of type parameters may be given in square brackets '
+          'immediately\n'
+          'after the class’s name. This indicates to static type checkers '
+          'that\n'
+          'the class is generic. At runtime, the type parameters can be '
+          'retrieved\n'
+          'from the class’s "__type_params__" attribute. See Generic classes '
+          'for\n'
+          'more.\n'
+          '\n'
+          'Changed in version 3.12: Type parameter lists are new in Python '
+          '3.12.\n'
+          '\n'
           '**Programmer’s note:** Variables defined in the class definition '
           'are\n'
           'class attributes; they are shared by instances.  Instance '
@@ -2573,9 +2515,12 @@
              '\n'
              'Any remaining exceptions that were not handled by any "except*" '
              'clause\n'
-             'are re-raised at the end, combined into an exception group along '
-             'with\n'
-             'all exceptions that were raised from within "except*" clauses.\n'
+             'are re-raised at the end, along with all exceptions that were '
+             'raised\n'
+             'from within the "except*" clauses. If this list contains more '
+             'than one\n'
+             'exception to reraise, they are combined into an exception '
+             'group.\n'
              '\n'
              'If the raised exception is not an exception group and its type '
              'matches\n'
@@ -2867,18 +2812,19 @@
              '   bindings made during a successful pattern match outlive the\n'
              '   executed block and can be used after the match statement**.\n'
              '\n'
-             '      Note:\n'
+             '   Note:\n'
              '\n'
-             '        During failed pattern matches, some subpatterns may '
-             'succeed.\n'
-             '        Do not rely on bindings being made for a failed match.\n'
-             '        Conversely, do not rely on variables remaining unchanged '
-             'after\n'
-             '        a failed match.  The exact behavior is dependent on\n'
-             '        implementation and may vary.  This is an intentional '
-             'decision\n'
-             '        made to allow different implementations to add '
-             'optimizations.\n'
+             '     During failed pattern matches, some subpatterns may '
+             'succeed.  Do\n'
+             '     not rely on bindings being made for a failed match.  '
+             'Conversely,\n'
+             '     do not rely on variables remaining unchanged after a '
+             'failed\n'
+             '     match.  The exact behavior is dependent on implementation '
+             'and may\n'
+             '     vary.  This is an intentional decision made to allow '
+             'different\n'
+             '     implementations to add optimizations.\n'
              '\n'
              '3. If the pattern succeeds, the corresponding guard (if present) '
              'is\n'
@@ -3530,9 +3476,10 @@
              '* convert "P1" to a keyword pattern using "CLS.__match_args__"\n'
              '\n'
              '* For each keyword argument "attr=P2":\n'
-             '     * "hasattr(<subject>, "attr")"\n'
              '\n'
-             '     * "P2" matches "<subject>.attr"\n'
+             '  * "hasattr(<subject>, "attr")"\n'
+             '\n'
+             '  * "P2" matches "<subject>.attr"\n'
              '\n'
              '* … and so on for the corresponding keyword argument/pattern '
              'pair.\n'
@@ -3551,8 +3498,8 @@
              '(see\n'
              'section The standard type hierarchy):\n'
              '\n'
-             '   funcdef                   ::= [decorators] "def" funcname "(" '
-             '[parameter_list] ")"\n'
+             '   funcdef                   ::= [decorators] "def" funcname '
+             '[type_params] "(" [parameter_list] ")"\n'
              '               ["->" expression] ":" suite\n'
              '   decorators                ::= decorator+\n'
              '   decorator                 ::= "@" assignment_expression '
@@ -3614,6 +3561,19 @@
              '"assignment_expression". Previously, the grammar was much more\n'
              'restrictive; see **PEP 614** for details.\n'
              '\n'
+             'A list of type parameters may be given in square brackets '
+             'between the\n'
+             'function’s name and the opening parenthesis for its parameter '
+             'list.\n'
+             'This indicates to static type checkers that the function is '
+             'generic.\n'
+             'At runtime, the type parameters can be retrieved from the '
+             'function’s\n'
+             '"__type_params__" attribute. See Generic functions for more.\n'
+             '\n'
+             'Changed in version 3.12: Type parameter lists are new in Python '
+             '3.12.\n'
+             '\n'
              'When one or more *parameters* have the form *parameter* "="\n'
              '*expression*, the function is said to have “default parameter '
              'values.�\n'
@@ -3756,8 +3716,8 @@
              'standard\n'
              'type hierarchy):\n'
              '\n'
-             '   classdef    ::= [decorators] "class" classname [inheritance] '
-             '":" suite\n'
+             '   classdef    ::= [decorators] "class" classname [type_params] '
+             '[inheritance] ":" suite\n'
              '   inheritance ::= "(" [argument_list] ")"\n'
              '   classname   ::= identifier\n'
              '\n'
@@ -3825,6 +3785,19 @@
              '"assignment_expression". Previously, the grammar was much more\n'
              'restrictive; see **PEP 614** for details.\n'
              '\n'
+             'A list of type parameters may be given in square brackets '
+             'immediately\n'
+             'after the class’s name. This indicates to static type checkers '
+             'that\n'
+             'the class is generic. At runtime, the type parameters can be '
+             'retrieved\n'
+             'from the class’s "__type_params__" attribute. See Generic '
+             'classes for\n'
+             'more.\n'
+             '\n'
+             'Changed in version 3.12: Type parameter lists are new in Python '
+             '3.12.\n'
+             '\n'
              '**Programmer’s note:** Variables defined in the class definition '
              'are\n'
              'class attributes; they are shared by instances.  Instance '
@@ -3982,6 +3955,272 @@
              'concept in\n'
              '     Python, and added supporting syntax.\n'
              '\n'
+             '\n'
+             'Type parameter lists\n'
+             '====================\n'
+             '\n'
+             'New in version 3.12.\n'
+             '\n'
+             '   type_params  ::= "[" type_param ("," type_param)* "]"\n'
+             '   type_param   ::= typevar | typevartuple | paramspec\n'
+             '   typevar      ::= identifier (":" expression)?\n'
+             '   typevartuple ::= "*" identifier\n'
+             '   paramspec    ::= "**" identifier\n'
+             '\n'
+             'Functions (including coroutines), classes and type aliases may '
+             'contain\n'
+             'a type parameter list:\n'
+             '\n'
+             '   def max[T](args: list[T]) -> T:\n'
+             '       ...\n'
+             '\n'
+             '   async def amax[T](args: list[T]) -> T:\n'
+             '       ...\n'
+             '\n'
+             '   class Bag[T]:\n'
+             '       def __iter__(self) -> Iterator[T]:\n'
+             '           ...\n'
+             '\n'
+             '       def add(self, arg: T) -> None:\n'
+             '           ...\n'
+             '\n'
+             '   type ListOrSet[T] = list[T] | set[T]\n'
+             '\n'
+             'Semantically, this indicates that the function, class, or type '
+             'alias\n'
+             'is generic over a type variable. This information is primarily '
+             'used by\n'
+             'static type checkers, and at runtime, generic objects behave '
+             'much like\n'
+             'their non-generic counterparts.\n'
+             '\n'
+             'Type parameters are declared in square brackets ("[]") '
+             'immediately\n'
+             'after the name of the function, class, or type alias. The type\n'
+             'parameters are accessible within the scope of the generic '
+             'object, but\n'
+             'not elsewhere. Thus, after a declaration "def func[T](): pass", '
+             'the\n'
+             'name "T" is not available in the module scope. Below, the '
+             'semantics of\n'
+             'generic objects are described with more precision. The scope of '
+             'type\n'
+             'parameters is modeled with a special function (technically, an\n'
+             'annotation scope) that wraps the creation of the generic '
+             'object.\n'
+             '\n'
+             'Generic functions, classes, and type aliases have a '
+             '"__type_params__"\n'
+             'attribute listing their type parameters.\n'
+             '\n'
+             'Type parameters come in three kinds:\n'
+             '\n'
+             '* "typing.TypeVar", introduced by a plain name (e.g., "T").\n'
+             '  Semantically, this represents a single type to a type '
+             'checker.\n'
+             '\n'
+             '* "typing.TypeVarTuple", introduced by a name prefixed with a '
+             'single\n'
+             '  asterisk (e.g., "*Ts"). Semantically, this stands for a tuple '
+             'of any\n'
+             '  number of types.\n'
+             '\n'
+             '* "typing.ParamSpec", introduced by a name prefixed with two '
+             'asterisks\n'
+             '  (e.g., "**P"). Semantically, this stands for the parameters of '
+             'a\n'
+             '  callable.\n'
+             '\n'
+             '"typing.TypeVar" declarations can define *bounds* and '
+             '*constraints*\n'
+             'with a colon (":") followed by an expression. A single '
+             'expression\n'
+             'after the colon indicates a bound (e.g. "T: int"). Semantically, '
+             'this\n'
+             'means that the "typing.TypeVar" can only represent types that '
+             'are a\n'
+             'subtype of this bound. A parenthesized tuple of expressions '
+             'after the\n'
+             'colon indicates a set of constraints (e.g. "T: (str, bytes)"). '
+             'Each\n'
+             'member of the tuple should be a type (again, this is not '
+             'enforced at\n'
+             'runtime). Constrained type variables can only take on one of the '
+             'types\n'
+             'in the list of constraints.\n'
+             '\n'
+             'For "typing.TypeVar"s declared using the type parameter list '
+             'syntax,\n'
+             'the bound and constraints are not evaluated when the generic '
+             'object is\n'
+             'created, but only when the value is explicitly accessed through '
+             'the\n'
+             'attributes "__bound__" and "__constraints__". To accomplish '
+             'this, the\n'
+             'bounds or constraints are evaluated in a separate annotation '
+             'scope.\n'
+             '\n'
+             '"typing.TypeVarTuple"s and "typing.ParamSpec"s cannot have '
+             'bounds or\n'
+             'constraints.\n'
+             '\n'
+             'The following example indicates the full set of allowed type '
+             'parameter\n'
+             'declarations:\n'
+             '\n'
+             '   def overly_generic[\n'
+             '      SimpleTypeVar,\n'
+             '      TypeVarWithBound: int,\n'
+             '      TypeVarWithConstraints: (str, bytes),\n'
+             '      *SimpleTypeVarTuple,\n'
+             '      **SimpleParamSpec,\n'
+             '   ](\n'
+             '      a: SimpleTypeVar,\n'
+             '      b: TypeVarWithBound,\n'
+             '      c: Callable[SimpleParamSpec, TypeVarWithConstraints],\n'
+             '      *d: SimpleTypeVarTuple,\n'
+             '   ): ...\n'
+             '\n'
+             '\n'
+             'Generic functions\n'
+             '-----------------\n'
+             '\n'
+             'Generic functions are declared as follows:\n'
+             '\n'
+             '   def func[T](arg: T): ...\n'
+             '\n'
+             'This syntax is equivalent to:\n'
+             '\n'
+             '   annotation-def TYPE_PARAMS_OF_func():\n'
+             '       T = typing.TypeVar("T")\n'
+             '       def func(arg: T): ...\n'
+             '       func.__type_params__ = (T,)\n'
+             '       return func\n'
+             '   func = TYPE_PARAMS_OF_func()\n'
+             '\n'
+             'Here "annotation-def" indicates an annotation scope, which is '
+             'not\n'
+             'actually bound to any name at runtime. (One other liberty is '
+             'taken in\n'
+             'the translation: the syntax does not go through attribute access '
+             'on\n'
+             'the "typing" module, but creates an instance of '
+             '"typing.TypeVar"\n'
+             'directly.)\n'
+             '\n'
+             'The annotations of generic functions are evaluated within the\n'
+             'annotation scope used for declaring the type parameters, but '
+             'the\n'
+             'function’s defaults and decorators are not.\n'
+             '\n'
+             'The following example illustrates the scoping rules for these '
+             'cases,\n'
+             'as well as for additional flavors of type parameters:\n'
+             '\n'
+             '   @decorator\n'
+             '   def func[T: int, *Ts, **P](*args: *Ts, arg: Callable[P, T] = '
+             'some_default):\n'
+             '       ...\n'
+             '\n'
+             'Except for the lazy evaluation of the "TypeVar" bound, this is\n'
+             'equivalent to:\n'
+             '\n'
+             '   DEFAULT_OF_arg = some_default\n'
+             '\n'
+             '   annotation-def TYPE_PARAMS_OF_func():\n'
+             '\n'
+             '       annotation-def BOUND_OF_T():\n'
+             '           return int\n'
+             '       # In reality, BOUND_OF_T() is evaluated only on demand.\n'
+             '       T = typing.TypeVar("T", bound=BOUND_OF_T())\n'
+             '\n'
+             '       Ts = typing.TypeVarTuple("Ts")\n'
+             '       P = typing.ParamSpec("P")\n'
+             '\n'
+             '       def func(*args: *Ts, arg: Callable[P, T] = '
+             'DEFAULT_OF_arg):\n'
+             '           ...\n'
+             '\n'
+             '       func.__type_params__ = (T, Ts, P)\n'
+             '       return func\n'
+             '   func = decorator(TYPE_PARAMS_OF_func())\n'
+             '\n'
+             'The capitalized names like "DEFAULT_OF_arg" are not actually '
+             'bound at\n'
+             'runtime.\n'
+             '\n'
+             '\n'
+             'Generic classes\n'
+             '---------------\n'
+             '\n'
+             'Generic classes are declared as follows:\n'
+             '\n'
+             '   class Bag[T]: ...\n'
+             '\n'
+             'This syntax is equivalent to:\n'
+             '\n'
+             '   annotation-def TYPE_PARAMS_OF_Bag():\n'
+             '       T = typing.TypeVar("T")\n'
+             '       class Bag(typing.Generic[T]):\n'
+             '           __type_params__ = (T,)\n'
+             '           ...\n'
+             '       return Bag\n'
+             '   Bag = TYPE_PARAMS_OF_Bag()\n'
+             '\n'
+             'Here again "annotation-def" (not a real keyword) indicates an\n'
+             'annotation scope, and the name "TYPE_PARAMS_OF_Bag" is not '
+             'actually\n'
+             'bound at runtime.\n'
+             '\n'
+             'Generic classes implicitly inherit from "typing.Generic". The '
+             'base\n'
+             'classes and keyword arguments of generic classes are evaluated '
+             'within\n'
+             'the type scope for the type parameters, and decorators are '
+             'evaluated\n'
+             'outside that scope. This is illustrated by this example:\n'
+             '\n'
+             '   @decorator\n'
+             '   class Bag(Base[T], arg=T): ...\n'
+             '\n'
+             'This is equivalent to:\n'
+             '\n'
+             '   annotation-def TYPE_PARAMS_OF_Bag():\n'
+             '       T = typing.TypeVar("T")\n'
+             '       class Bag(Base[T], typing.Generic[T], arg=T):\n'
+             '           __type_params__ = (T,)\n'
+             '           ...\n'
+             '       return Bag\n'
+             '   Bag = decorator(TYPE_PARAMS_OF_Bag())\n'
+             '\n'
+             '\n'
+             'Generic type aliases\n'
+             '--------------------\n'
+             '\n'
+             'The "type" statement can also be used to create a generic type '
+             'alias:\n'
+             '\n'
+             '   type ListOrSet[T] = list[T] | set[T]\n'
+             '\n'
+             'Except for the lazy evaluation of the value, this is equivalent '
+             'to:\n'
+             '\n'
+             '   annotation-def TYPE_PARAMS_OF_ListOrSet():\n'
+             '       T = typing.TypeVar("T")\n'
+             '\n'
+             '       annotation-def VALUE_OF_ListOrSet():\n'
+             '           return list[T] | set[T]\n'
+             '       # In reality, the value is lazily evaluated\n'
+             '       return typing.TypeAliasType("ListOrSet", '
+             'VALUE_OF_ListOrSet(), type_params=(T,))\n'
+             '   ListOrSet = TYPE_PARAMS_OF_ListOrSet()\n'
+             '\n'
+             'Here, "annotation-def" (not a real keyword) indicates an '
+             'annotation\n'
+             'scope. The capitalized names like "TYPE_PARAMS_OF_ListOrSet" are '
+             'not\n'
+             'actually bound at runtime.\n'
+             '\n'
              '-[ Footnotes ]-\n'
              '\n'
              '[1] The exception is propagated to the invocation stack unless '
@@ -3993,30 +4232,30 @@
              '[2] In pattern matching, a sequence is defined as one of the\n'
              '    following:\n'
              '\n'
-             '       * a class that inherits from "collections.abc.Sequence"\n'
+             '    * a class that inherits from "collections.abc.Sequence"\n'
              '\n'
-             '       * a Python class that has been registered as\n'
-             '         "collections.abc.Sequence"\n'
+             '    * a Python class that has been registered as\n'
+             '      "collections.abc.Sequence"\n'
              '\n'
-             '       * a builtin class that has its (CPython) '
-             '"Py_TPFLAGS_SEQUENCE"\n'
-             '         bit set\n'
+             '    * a builtin class that has its (CPython) '
+             '"Py_TPFLAGS_SEQUENCE" bit\n'
+             '      set\n'
              '\n'
-             '       * a class that inherits from any of the above\n'
+             '    * a class that inherits from any of the above\n'
              '\n'
              '    The following standard library classes are sequences:\n'
              '\n'
-             '       * "array.array"\n'
+             '    * "array.array"\n'
              '\n'
-             '       * "collections.deque"\n'
+             '    * "collections.deque"\n'
              '\n'
-             '       * "list"\n'
+             '    * "list"\n'
              '\n'
-             '       * "memoryview"\n'
+             '    * "memoryview"\n'
              '\n'
-             '       * "range"\n'
+             '    * "range"\n'
              '\n'
-             '       * "tuple"\n'
+             '    * "tuple"\n'
              '\n'
              '    Note:\n'
              '\n'
@@ -4027,16 +4266,16 @@
              '[3] In pattern matching, a mapping is defined as one of the '
              'following:\n'
              '\n'
-             '       * a class that inherits from "collections.abc.Mapping"\n'
+             '    * a class that inherits from "collections.abc.Mapping"\n'
              '\n'
-             '       * a Python class that has been registered as\n'
-             '         "collections.abc.Mapping"\n'
+             '    * a Python class that has been registered as\n'
+             '      "collections.abc.Mapping"\n'
              '\n'
-             '       * a builtin class that has its (CPython) '
-             '"Py_TPFLAGS_MAPPING"\n'
-             '         bit set\n'
+             '    * a builtin class that has its (CPython) '
+             '"Py_TPFLAGS_MAPPING" bit\n'
+             '      set\n'
              '\n'
-             '       * a class that inherits from any of the above\n'
+             '    * a class that inherits from any of the above\n'
              '\n'
              '    The standard library classes "dict" and '
              '"types.MappingProxyType"\n'
@@ -4587,8 +4826,7 @@
                   'case\n'
                   '     performance of a dict insertion, O(n^2) complexity.  '
                   'See\n'
-                  '     http://www.ocert.org/advisories/ocert-2011-003.html '
-                  'for\n'
+                  '     http://ocert.org/advisories/ocert-2011-003.html for\n'
                   '     details.Changing hash values affects the iteration '
                   'order of sets.\n'
                   '     Python has never made guarantees about this ordering '
@@ -4651,20 +4889,41 @@
              'traces of\n'
              '     Python programs.\n'
              '\n'
-             'The debugger’s prompt is "(Pdb)". Typical usage to run a program '
-             'under\n'
-             'control of the debugger is:\n'
+             'The typical usage to break into the debugger is to insert:\n'
              '\n'
-             '   >>> import pdb\n'
-             '   >>> import mymodule\n'
-             "   >>> pdb.run('mymodule.test()')\n"
-             '   > <string>(0)?()\n'
-             '   (Pdb) continue\n'
-             '   > <string>(1)?()\n'
+             '   import pdb; pdb.set_trace()\n'
+             '\n'
+             'Or:\n'
+             '\n'
+             '   breakpoint()\n'
+             '\n'
+             'at the location you want to break into the debugger, and then '
+             'run the\n'
+             'program. You can then step through the code following this '
+             'statement,\n'
+             'and continue running without the debugger using the "continue"\n'
+             'command.\n'
+             '\n'
+             'New in version 3.7: The built-in "breakpoint()", when called '
+             'with\n'
+             'defaults, can be used instead of "import pdb; pdb.set_trace()".\n'
+             '\n'
+             '   def double(x):\n'
+             '      breakpoint()\n'
+             '      return x * 2\n'
+             '   val = 3\n'
+             '   print(f"{val} * 2 is {double(val)}")\n'
+             '\n'
+             'The debugger’s prompt is "(Pdb)", which is the indicator that '
+             'you are\n'
+             'in debug mode:\n'
+             '\n'
+             '   > ...(3)double()\n'
+             '   -> return x * 2\n'
+             '   (Pdb) p x\n'
+             '   3\n'
              '   (Pdb) continue\n'
-             "   NameError: 'spam'\n"
-             '   > <string>(1)?()\n'
-             '   (Pdb)\n'
+             '   3 * 2 is 6\n'
              '\n'
              'Changed in version 3.3: Tab-completion via the "readline" module '
              'is\n'
@@ -4672,13 +4931,12 @@
              'global\n'
              'and local names are offered as arguments of the "p" command.\n'
              '\n'
-             '"pdb.py" can also be invoked as a script to debug other '
-             'scripts.  For\n'
-             'example:\n'
+             'You can also invoke "pdb" from the command line to debug other\n'
+             'scripts.  For example:\n'
              '\n'
              '   python -m pdb myscript.py\n'
              '\n'
-             'When invoked as a script, pdb will automatically enter '
+             'When invoked as a module, pdb will automatically enter '
              'post-mortem\n'
              'debugging if the program being debugged exits abnormally.  After '
              'post-\n'
@@ -4690,47 +4948,43 @@
              'the\n'
              'debugger upon program’s exit.\n'
              '\n'
-             'New in version 3.2: "pdb.py" now accepts a "-c" option that '
-             'executes\n'
-             'commands as if given in a ".pdbrc" file, see Debugger Commands.\n'
-             '\n'
-             'New in version 3.7: "pdb.py" now accepts a "-m" option that '
-             'execute\n'
-             'modules similar to the way "python -m" does. As with a script, '
-             'the\n'
-             'debugger will pause execution just before the first line of the\n'
-             'module.\n'
-             '\n'
-             'The typical usage to break into the debugger is to insert:\n'
+             'New in version 3.2: "-c" option is introduced to execute '
+             'commands as\n'
+             'if given in a ".pdbrc" file, see Debugger Commands.\n'
              '\n'
-             '   import pdb; pdb.set_trace()\n'
+             'New in version 3.7: "-m" option is introduced to execute '
+             'modules\n'
+             'similar to the way "python -m" does. As with a script, the '
+             'debugger\n'
+             'will pause execution just before the first line of the module.\n'
              '\n'
-             'at the location you want to break into the debugger, and then '
-             'run the\n'
-             'program. You can then step through the code following this '
-             'statement,\n'
-             'and continue running without the debugger using the "continue"\n'
-             'command.\n'
+             'Typical usage to execute a statement under control of the '
+             'debugger is:\n'
              '\n'
-             'New in version 3.7: The built-in "breakpoint()", when called '
-             'with\n'
-             'defaults, can be used instead of "import pdb; pdb.set_trace()".\n'
+             '   >>> import pdb\n'
+             '   >>> def f(x):\n'
+             '   ...     print(1 / x)\n'
+             '   >>> pdb.run("f(2)")\n'
+             '   > <string>(1)<module>()\n'
+             '   (Pdb) continue\n'
+             '   0.5\n'
+             '   >>>\n'
              '\n'
              'The typical usage to inspect a crashed program is:\n'
              '\n'
              '   >>> import pdb\n'
-             '   >>> import mymodule\n'
-             '   >>> mymodule.test()\n'
+             '   >>> def f(x):\n'
+             '   ...     print(1 / x)\n'
+             '   ...\n'
+             '   >>> f(0)\n'
              '   Traceback (most recent call last):\n'
              '     File "<stdin>", line 1, in <module>\n'
-             '     File "./mymodule.py", line 4, in test\n'
-             '       test2()\n'
-             '     File "./mymodule.py", line 3, in test2\n'
-             '       print(spam)\n'
-             '   NameError: spam\n'
+             '     File "<stdin>", line 2, in f\n'
+             '   ZeroDivisionError: division by zero\n'
              '   >>> pdb.pm()\n'
-             '   > ./mymodule.py(3)test2()\n'
-             '   -> print(spam)\n'
+             '   > <stdin>(2)f()\n'
+             '   (Pdb) p x\n'
+             '   0\n'
              '   (Pdb)\n'
              '\n'
              'The module defines the following functions; each enters the '
@@ -4799,8 +5053,8 @@
              '\n'
              'pdb.pm()\n'
              '\n'
-             '   Enter post-mortem debugging of the traceback found in\n'
-             '   "sys.last_traceback".\n'
+             '   Enter post-mortem debugging of the exception found in\n'
+             '   "sys.last_exc".\n'
              '\n'
              'The "run*" functions and "set_trace()" are aliases for '
              'instantiating\n'
@@ -4896,6 +5150,10 @@
              'is\n'
              'printed but the debugger’s state is not changed.\n'
              '\n'
+             'Changed in version 3.13: Expressions/Statements whose prefix is '
+             'a pdb\n'
+             'command are now correctly identified and executed.\n'
+             '\n'
              'The debugger supports aliases.  Aliases can have parameters '
              'which\n'
              'allows one a certain level of adaptability to the context under\n'
@@ -4914,6 +5172,29 @@
              'implicit\n'
              'string concatenation "\';\'\';\'" or "";"";"".\n'
              '\n'
+             'To set a temporary global variable, use a *convenience '
+             'variable*. A\n'
+             '*convenience variable* is a variable whose name starts with '
+             '"$".  For\n'
+             'example, "$foo = 1" sets a global variable "$foo" which you can '
+             'use in\n'
+             'the debugger session.  The *convenience variables* are cleared '
+             'when\n'
+             'the program resumes execution so it’s less likely to interfere '
+             'with\n'
+             'your program compared to using normal variables like "foo = 1".\n'
+             '\n'
+             'There are three preset *convenience variables*:\n'
+             '\n'
+             '* "$_frame": the current frame you are debugging\n'
+             '\n'
+             '* "$_retval": the return value if the frame is returning\n'
+             '\n'
+             '* "$_exception": the exception if the frame is raising an '
+             'exception\n'
+             '\n'
+             'New in version 3.12.\n'
+             '\n'
              'If a file ".pdbrc" exists in the user’s home directory or in '
              'the\n'
              'current directory, it is read with "\'utf-8\'" encoding and '
@@ -4949,9 +5230,9 @@
              '\n'
              '   Print a stack trace, with the most recent frame at the '
              'bottom.  An\n'
-             '   arrow indicates the current frame, which determines the '
-             'context of\n'
-             '   most commands.\n'
+             '   arrow (">") indicates the current frame, which determines '
+             'the\n'
+             '   context of most commands.\n'
              '\n'
              'd(own) [count]\n'
              '\n'
@@ -5007,7 +5288,7 @@
              'first\n'
              '   ask confirmation).\n'
              '\n'
-             'disable [bpnumber ...]\n'
+             'disable bpnumber [bpnumber ...]\n'
              '\n'
              '   Disable the breakpoints given as a space separated list of\n'
              '   breakpoint numbers.  Disabling a breakpoint means it cannot '
@@ -5016,7 +5297,7 @@
              'breakpoint, it\n'
              '   remains in the list of breakpoints and can be (re-)enabled.\n'
              '\n'
-             'enable [bpnumber ...]\n'
+             'enable bpnumber [bpnumber ...]\n'
              '\n'
              '   Enable the breakpoints specified.\n'
              '\n'
@@ -5179,7 +5460,9 @@
              '\n'
              'a(rgs)\n'
              '\n'
-             '   Print the argument list of the current function.\n'
+             '   Print the arguments of the current function and their '
+             'current\n'
+             '   values.\n'
              '\n'
              'p expression\n'
              '\n'
@@ -5217,6 +5500,54 @@
              'current\n'
              '   frame.\n'
              '\n'
+             '   Note:\n'
+             '\n'
+             '     Display evaluates *expression* and compares to the result '
+             'of the\n'
+             '     previous evaluation of *expression*, so when the result is\n'
+             '     mutable, display may not be able to pick up the changes.\n'
+             '\n'
+             '   Example:\n'
+             '\n'
+             '      lst = []\n'
+             '      breakpoint()\n'
+             '      pass\n'
+             '      lst.append(1)\n'
+             '      print(lst)\n'
+             '\n'
+             '   Display won’t realize "lst" has been changed because the '
+             'result of\n'
+             '   evaluation is modified in place by "lst.append(1)" before '
+             'being\n'
+             '   compared:\n'
+             '\n'
+             '      > example.py(3)<module>()\n'
+             '      -> pass\n'
+             '      (Pdb) display lst\n'
+             '      display lst: []\n'
+             '      (Pdb) n\n'
+             '      > example.py(4)<module>()\n'
+             '      -> lst.append(1)\n'
+             '      (Pdb) n\n'
+             '      > example.py(5)<module>()\n'
+             '      -> print(lst)\n'
+             '      (Pdb)\n'
+             '\n'
+             '   You can do some tricks with copy mechanism to make it work:\n'
+             '\n'
+             '      > example.py(3)<module>()\n'
+             '      -> pass\n'
+             '      (Pdb) display lst[:]\n'
+             '      display lst[:]: []\n'
+             '      (Pdb) n\n'
+             '      > example.py(4)<module>()\n'
+             '      -> lst.append(1)\n'
+             '      (Pdb) n\n'
+             '      > example.py(5)<module>()\n'
+             '      -> print(lst)\n'
+             '      display lst[:]: [1]  [old: []]\n'
+             '      (Pdb)\n'
+             '\n'
              '   New in version 3.2.\n'
              '\n'
              'undisplay [expression]\n'
@@ -5243,7 +5574,7 @@
              '   Create an alias called *name* that executes *command*.  The\n'
              '   *command* must *not* be enclosed in quotes.  Replaceable '
              'parameters\n'
-             '   can be indicated by "%1", "%2", and so on, while "%*" is '
+             '   can be indicated by "%1", "%2", … and "%9", while "%*" is '
              'replaced\n'
              '   by all the parameters. If *command* is omitted, the current '
              'alias\n'
@@ -5283,14 +5614,14 @@
              'current\n'
              '   stack frame. The exclamation point can be omitted unless the '
              'first\n'
-             '   word of the statement resembles a debugger command, e.g.:'
+             '   word of the statement resembles a debugger command, e.g.:\n'
              '\n'
              '      (Pdb) ! n=42\n'
              '      (Pdb)\n'
              '\n'
-             '   To set a global variable, you can prefix the assignment command '
-             '   with \n'
-             '   a "global" statement on the same line, e.g.:\n'
+             '   To set a global variable, you can prefix the assignment '
+             'command\n'
+             '   with a "global" statement on the same line, e.g.:\n'
              '\n'
              "      (Pdb) global list_options; list_options = ['-l']\n"
              '      (Pdb)\n'
@@ -5321,7 +5652,59 @@
              '\n'
              'retval\n'
              '\n'
-             '   Print the return value for the last return of a function.\n'
+             '   Print the return value for the last return of the current '
+             'function.\n'
+             '\n'
+             'exceptions [excnumber]\n'
+             '\n'
+             '   List or jump between chained exceptions.\n'
+             '\n'
+             '   When using "pdb.pm()"  or "Pdb.post_mortem(...)" with a '
+             'chained\n'
+             '   exception instead of a traceback, it allows the user to move\n'
+             '   between the chained exceptions using "exceptions" command to '
+             'list\n'
+             '   exceptions, and "exception <number>" to switch to that '
+             'exception.\n'
+             '\n'
+             '   Example:\n'
+             '\n'
+             '      def out():\n'
+             '          try:\n'
+             '              middle()\n'
+             '          except Exception as e:\n'
+             '              raise ValueError("reraise middle() error") from e\n'
+             '\n'
+             '      def middle():\n'
+             '          try:\n'
+             '              return inner(0)\n'
+             '          except Exception as e:\n'
+             '              raise ValueError("Middle fail")\n'
+             '\n'
+             '      def inner(x):\n'
+             '          1 / x\n'
+             '\n'
+             '       out()\n'
+             '\n'
+             '   calling "pdb.pm()" will allow to move between exceptions:\n'
+             '\n'
+             '      > example.py(5)out()\n'
+             '      -> raise ValueError("reraise middle() error") from e\n'
+             '\n'
+             '      (Pdb) exceptions\n'
+             "        0 ZeroDivisionError('division by zero')\n"
+             "        1 ValueError('Middle fail')\n"
+             "      > 2 ValueError('reraise middle() error')\n"
+             '\n'
+             '      (Pdb) exceptions 0\n'
+             '      > example.py(16)inner()\n'
+             '      -> 1 / x\n'
+             '\n'
+             '      (Pdb) up\n'
+             '      > example.py(10)middle()\n'
+             '      -> return inner(0)\n'
+             '\n'
+             '   New in version 3.13.\n'
              '\n'
              '-[ Footnotes ]-\n'
              '\n'
@@ -5360,30 +5743,31 @@
  'dict': 'Dictionary displays\n'
          '*******************\n'
          '\n'
-         'A dictionary display is a possibly empty series of key/datum pairs\n'
-         'enclosed in curly braces:\n'
+         'A dictionary display is a possibly empty series of dict items\n'
+         '(key/value pairs) enclosed in curly braces:\n'
          '\n'
-         '   dict_display       ::= "{" [key_datum_list | dict_comprehension] '
+         '   dict_display       ::= "{" [dict_item_list | dict_comprehension] '
          '"}"\n'
-         '   key_datum_list     ::= key_datum ("," key_datum)* [","]\n'
-         '   key_datum          ::= expression ":" expression | "**" or_expr\n'
+         '   dict_item_list     ::= dict_item ("," dict_item)* [","]\n'
+         '   dict_item          ::= expression ":" expression | "**" or_expr\n'
          '   dict_comprehension ::= expression ":" expression comp_for\n'
          '\n'
          'A dictionary display yields a new dictionary object.\n'
          '\n'
-         'If a comma-separated sequence of key/datum pairs is given, they are\n'
+         'If a comma-separated sequence of dict items is given, they are\n'
          'evaluated from left to right to define the entries of the '
          'dictionary:\n'
          'each key object is used as a key into the dictionary to store the\n'
-         'corresponding datum.  This means that you can specify the same key\n'
-         'multiple times in the key/datum list, and the final dictionary’s '
+         'corresponding value.  This means that you can specify the same key\n'
+         'multiple times in the dict item list, and the final dictionary’s '
          'value\n'
          'for that key will be the last one given.\n'
          '\n'
          'A double asterisk "**" denotes *dictionary unpacking*. Its operand\n'
          'must be a *mapping*.  Each mapping item is added to the new\n'
-         'dictionary.  Later values replace values already set by earlier\n'
-         'key/datum pairs and earlier dictionary unpackings.\n'
+         'dictionary.  Later values replace values already set by earlier '
+         'dict\n'
+         'items and earlier dictionary unpackings.\n'
          '\n'
          'New in version 3.5: Unpacking into dictionary displays, originally\n'
          'proposed by **PEP 448**.\n'
@@ -5399,7 +5783,7 @@
          'Restrictions on the types of the key values are listed earlier in\n'
          'section The standard type hierarchy.  (To summarize, the key type\n'
          'should be *hashable*, which excludes all mutable objects.)  Clashes\n'
-         'between duplicate keys are not detected; the last datum (textually\n'
+         'between duplicate keys are not detected; the last value (textually\n'
          'rightmost in the display) stored for a given key value prevails.\n'
          '\n'
          'Changed in version 3.8: Prior to Python 3.8, in dict '
@@ -5600,6 +5984,10 @@
               '\n'
               '* "import" statements.\n'
               '\n'
+              '* "type" statements.\n'
+              '\n'
+              '* type parameter lists.\n'
+              '\n'
               'The "import" statement of the form "from ... import *" binds '
               'all names\n'
               'defined in the imported module, except those beginning with an\n'
@@ -5706,7 +6094,9 @@
               'scope.\n'
               '"SyntaxError" is raised at compile time if the given name does '
               'not\n'
-              'exist in any enclosing function scope.\n'
+              'exist in any enclosing function scope. Type parameters cannot '
+              'be\n'
+              'rebound with the "nonlocal" statement.\n'
               '\n'
               'The namespace for a module is automatically created the first '
               'time a\n'
@@ -5729,17 +6119,162 @@
               'the class. The scope of names defined in a class block is '
               'limited to\n'
               'the class block; it does not extend to the code blocks of '
-              'methods –\n'
-              'this includes comprehensions and generator expressions since '
-              'they are\n'
-              'implemented using a function scope.  This means that the '
-              'following\n'
-              'will fail:\n'
+              'methods.\n'
+              'This includes comprehensions and generator expressions, but it '
+              'does\n'
+              'not include annotation scopes, which have access to their '
+              'enclosing\n'
+              'class scopes. This means that the following will fail:\n'
               '\n'
               '   class A:\n'
               '       a = 42\n'
               '       b = list(a + i for i in range(10))\n'
               '\n'
+              'However, the following will succeed:\n'
+              '\n'
+              '   class A:\n'
+              '       type Alias = Nested\n'
+              '       class Nested: pass\n'
+              '\n'
+              "   print(A.Alias.__value__)  # <type 'A.Nested'>\n"
+              '\n'
+              '\n'
+              'Annotation scopes\n'
+              '-----------------\n'
+              '\n'
+              'Type parameter lists and "type" statements introduce '
+              '*annotation\n'
+              'scopes*, which behave mostly like function scopes, but with '
+              'some\n'
+              'exceptions discussed below. *Annotations* currently do not use\n'
+              'annotation scopes, but they are expected to use annotation '
+              'scopes in\n'
+              'Python 3.13 when **PEP 649** is implemented.\n'
+              '\n'
+              'Annotation scopes are used in the following contexts:\n'
+              '\n'
+              '* Type parameter lists for generic type aliases.\n'
+              '\n'
+              '* Type parameter lists for generic functions. A generic '
+              'function’s\n'
+              '  annotations are executed within the annotation scope, but '
+              'its\n'
+              '  defaults and decorators are not.\n'
+              '\n'
+              '* Type parameter lists for generic classes. A generic class’s '
+              'base\n'
+              '  classes and keyword arguments are executed within the '
+              'annotation\n'
+              '  scope, but its decorators are not.\n'
+              '\n'
+              '* The bounds and constraints for type variables (lazily '
+              'evaluated).\n'
+              '\n'
+              '* The value of type aliases (lazily evaluated).\n'
+              '\n'
+              'Annotation scopes differ from function scopes in the following '
+              'ways:\n'
+              '\n'
+              '* Annotation scopes have access to their enclosing class '
+              'namespace. If\n'
+              '  an annotation scope is immediately within a class scope, or '
+              'within\n'
+              '  another annotation scope that is immediately within a class '
+              'scope,\n'
+              '  the code in the annotation scope can use names defined in the '
+              'class\n'
+              '  scope as if it were executed directly within the class body. '
+              'This\n'
+              '  contrasts with regular functions defined within classes, '
+              'which\n'
+              '  cannot access names defined in the class scope.\n'
+              '\n'
+              '* Expressions in annotation scopes cannot contain "yield", '
+              '"yield\n'
+              '  from", "await", or ":=" expressions. (These expressions are '
+              'allowed\n'
+              '  in other scopes contained within the annotation scope.)\n'
+              '\n'
+              '* Names defined in annotation scopes cannot be rebound with '
+              '"nonlocal"\n'
+              '  statements in inner scopes. This includes only type '
+              'parameters, as\n'
+              '  no other syntactic elements that can appear within annotation '
+              'scopes\n'
+              '  can introduce new names.\n'
+              '\n'
+              '* While annotation scopes have an internal name, that name is '
+              'not\n'
+              '  reflected in the *__qualname__* of objects defined within the '
+              'scope.\n'
+              '  Instead, the "__qualname__" of such objects is as if the '
+              'object were\n'
+              '  defined in the enclosing scope.\n'
+              '\n'
+              'New in version 3.12: Annotation scopes were introduced in '
+              'Python 3.12\n'
+              'as part of **PEP 695**.\n'
+              '\n'
+              '\n'
+              'Lazy evaluation\n'
+              '---------------\n'
+              '\n'
+              'The values of type aliases created through the "type" statement '
+              'are\n'
+              '*lazily evaluated*. The same applies to the bounds and '
+              'constraints of\n'
+              'type variables created through the type parameter syntax. This '
+              'means\n'
+              'that they are not evaluated when the type alias or type '
+              'variable is\n'
+              'created. Instead, they are only evaluated when doing so is '
+              'necessary\n'
+              'to resolve an attribute access.\n'
+              '\n'
+              'Example:\n'
+              '\n'
+              '   >>> type Alias = 1/0\n'
+              '   >>> Alias.__value__\n'
+              '   Traceback (most recent call last):\n'
+              '     ...\n'
+              '   ZeroDivisionError: division by zero\n'
+              '   >>> def func[T: 1/0](): pass\n'
+              '   >>> T = func.__type_params__[0]\n'
+              '   >>> T.__bound__\n'
+              '   Traceback (most recent call last):\n'
+              '     ...\n'
+              '   ZeroDivisionError: division by zero\n'
+              '\n'
+              'Here the exception is raised only when the "__value__" '
+              'attribute of\n'
+              'the type alias or the "__bound__" attribute of the type '
+              'variable is\n'
+              'accessed.\n'
+              '\n'
+              'This behavior is primarily useful for references to types that '
+              'have\n'
+              'not yet been defined when the type alias or type variable is '
+              'created.\n'
+              'For example, lazy evaluation enables creation of mutually '
+              'recursive\n'
+              'type aliases:\n'
+              '\n'
+              '   from typing import Literal\n'
+              '\n'
+              '   type SimpleExpr = int | Parenthesized\n'
+              '   type Parenthesized = tuple[Literal["("], Expr, '
+              'Literal[")"]]\n'
+              '   type Expr = SimpleExpr | tuple[SimpleExpr, Literal["+", '
+              '"-"], Expr]\n'
+              '\n'
+              'Lazily evaluated values are evaluated in annotation scope, '
+              'which means\n'
+              'that names that appear inside the lazily evaluated value are '
+              'looked up\n'
+              'as if they were used in the immediately enclosing scope.\n'
+              '\n'
+              'New in version 3.12.\n'
+              '\n'
               '\n'
               'Builtins and restricted execution\n'
               '---------------------------------\n'
@@ -6009,18 +6544,17 @@
                   '\n'
                   'The grammar for a replacement field is as follows:\n'
                   '\n'
-                  '      replacement_field ::= "{" [field_name] ["!" '
-                  'conversion] [":" format_spec] "}"\n'
-                  '      field_name        ::= arg_name ("." attribute_name | '
-                  '"[" element_index "]")*\n'
-                  '      arg_name          ::= [identifier | digit+]\n'
-                  '      attribute_name    ::= identifier\n'
-                  '      element_index     ::= digit+ | index_string\n'
-                  '      index_string      ::= <any source character except '
-                  '"]"> +\n'
-                  '      conversion        ::= "r" | "s" | "a"\n'
-                  '      format_spec       ::= <described in the next '
-                  'section>\n'
+                  '   replacement_field ::= "{" [field_name] ["!" conversion] '
+                  '[":" format_spec] "}"\n'
+                  '   field_name        ::= arg_name ("." attribute_name | "[" '
+                  'element_index "]")*\n'
+                  '   arg_name          ::= [identifier | digit+]\n'
+                  '   attribute_name    ::= identifier\n'
+                  '   element_index     ::= digit+ | index_string\n'
+                  '   index_string      ::= <any source character except "]"> '
+                  '+\n'
+                  '   conversion        ::= "r" | "s" | "a"\n'
+                  '   format_spec       ::= <described in the next section>\n'
                   '\n'
                   'In less formal terms, the replacement field can start with '
                   'a\n'
@@ -6044,22 +6578,26 @@
                   'positional\n'
                   'argument, and if it’s a keyword, it refers to a named '
                   'keyword\n'
-                  'argument.  If the numerical arg_names in a format string '
-                  'are 0, 1, 2,\n'
-                  '… in sequence, they can all be omitted (not just some) and '
-                  'the numbers\n'
-                  '0, 1, 2, … will be automatically inserted in that order. '
-                  'Because\n'
-                  '*arg_name* is not quote-delimited, it is not possible to '
-                  'specify\n'
-                  'arbitrary dictionary keys (e.g., the strings "\'10\'" or '
-                  '"\':-]\'") within\n'
-                  'a format string. The *arg_name* can be followed by any '
-                  'number of index\n'
-                  'or attribute expressions. An expression of the form '
-                  '"\'.name\'" selects\n'
-                  'the named attribute using "getattr()", while an expression '
-                  'of the form\n'
+                  'argument. An *arg_name* is treated as a number if a call '
+                  'to\n'
+                  '"str.isdecimal()" on the string would return true. If the '
+                  'numerical\n'
+                  'arg_names in a format string are 0, 1, 2, … in sequence, '
+                  'they can all\n'
+                  'be omitted (not just some) and the numbers 0, 1, 2, … will '
+                  'be\n'
+                  'automatically inserted in that order. Because *arg_name* is '
+                  'not quote-\n'
+                  'delimited, it is not possible to specify arbitrary '
+                  'dictionary keys\n'
+                  '(e.g., the strings "\'10\'" or "\':-]\'") within a format '
+                  'string. The\n'
+                  '*arg_name* can be followed by any number of index or '
+                  'attribute\n'
+                  'expressions. An expression of the form "\'.name\'" selects '
+                  'the named\n'
+                  'attribute using "getattr()", while an expression of the '
+                  'form\n'
                   '"\'[index]\'" does an index lookup using "__getitem__()".\n'
                   '\n'
                   'Changed in version 3.1: The positional argument specifiers '
@@ -6202,43 +6740,37 @@
                   'The meaning of the various alignment options is as '
                   'follows:\n'
                   '\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | Option    | '
+                  '| Option    | '
                   'Meaning                                                    '
                   '|\n'
-                  '   '
                   '|===========|============================================================|\n'
-                  '   | "\'<\'"     | Forces the field to be left-aligned '
-                  'within the available   |\n'
-                  '   |           | space (this is the default for most '
+                  '| "\'<\'"     | Forces the field to be left-aligned within '
+                  'the available   |\n'
+                  '|           | space (this is the default for most '
                   'objects).              |\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | "\'>\'"     | Forces the field to be right-aligned '
-                  'within the available  |\n'
-                  '   |           | space (this is the default for '
+                  '| "\'>\'"     | Forces the field to be right-aligned within '
+                  'the available  |\n'
+                  '|           | space (this is the default for '
                   'numbers).                   |\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | "\'=\'"     | Forces the padding to be placed after '
-                  'the sign (if any)    |\n'
-                  '   |           | but before the digits.  This is used for '
+                  '| "\'=\'"     | Forces the padding to be placed after the '
+                  'sign (if any)    |\n'
+                  '|           | but before the digits.  This is used for '
                   'printing fields   |\n'
-                  '   |           | in the form ‘+000000120’. This alignment '
+                  '|           | in the form ‘+000000120’. This alignment '
                   'option is only    |\n'
-                  '   |           | valid for numeric types.  It becomes the '
+                  '|           | valid for numeric types.  It becomes the '
                   'default for       |\n'
-                  '   |           | numbers when ‘0’ immediately precedes the '
+                  '|           | numbers when ‘0’ immediately precedes the '
                   'field width.     |\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | "\'^\'"     | Forces the field to be centered within '
-                  'the available       |\n'
-                  '   |           | '
+                  '| "\'^\'"     | Forces the field to be centered within the '
+                  'available       |\n'
+                  '|           | '
                   'space.                                                     '
                   '|\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
                   '\n'
                   'Note that unless a minimum field width is defined, the '
@@ -6251,30 +6783,25 @@
                   'be one of\n'
                   'the following:\n'
                   '\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | Option    | '
+                  '| Option    | '
                   'Meaning                                                    '
                   '|\n'
-                  '   '
                   '|===========|============================================================|\n'
-                  '   | "\'+\'"     | indicates that a sign should be used for '
+                  '| "\'+\'"     | indicates that a sign should be used for '
                   'both positive as  |\n'
-                  '   |           | well as negative '
+                  '|           | well as negative '
                   'numbers.                                  |\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | "\'-\'"     | indicates that a sign should be used '
-                  'only for negative     |\n'
-                  '   |           | numbers (this is the default '
+                  '| "\'-\'"     | indicates that a sign should be used only '
+                  'for negative     |\n'
+                  '|           | numbers (this is the default '
                   'behavior).                    |\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | space     | indicates that a leading space should be '
-                  'used on positive  |\n'
-                  '   |           | numbers, and a minus sign on negative '
+                  '| space     | indicates that a leading space should be used '
+                  'on positive  |\n'
+                  '|           | numbers, and a minus sign on negative '
                   'numbers.             |\n'
-                  '   '
                   '+-----------+------------------------------------------------------------+\n'
                   '\n'
                   'The "\'z\'" option coerces negative zero floating-point '
@@ -6780,8 +7307,8 @@
              '(see\n'
              'section The standard type hierarchy):\n'
              '\n'
-             '   funcdef                   ::= [decorators] "def" funcname "(" '
-             '[parameter_list] ")"\n'
+             '   funcdef                   ::= [decorators] "def" funcname '
+             '[type_params] "(" [parameter_list] ")"\n'
              '               ["->" expression] ":" suite\n'
              '   decorators                ::= decorator+\n'
              '   decorator                 ::= "@" assignment_expression '
@@ -6843,6 +7370,19 @@
              '"assignment_expression". Previously, the grammar was much more\n'
              'restrictive; see **PEP 614** for details.\n'
              '\n'
+             'A list of type parameters may be given in square brackets '
+             'between the\n'
+             'function’s name and the opening parenthesis for its parameter '
+             'list.\n'
+             'This indicates to static type checkers that the function is '
+             'generic.\n'
+             'At runtime, the type parameters can be retrieved from the '
+             'function’s\n'
+             '"__type_params__" attribute. See Generic functions for more.\n'
+             '\n'
+             'Changed in version 3.12: Type parameter lists are new in Python '
+             '3.12.\n'
+             '\n'
              'When one or more *parameters* have the form *parameter* "="\n'
              '*expression*, the function is said to have “default parameter '
              'values.�\n'
@@ -7156,8 +7696,8 @@
                 '\n'
                 'A non-normative HTML file listing all valid identifier '
                 'characters for\n'
-                'Unicode 15.0.0 can be found at\n'
-                'https://www.unicode.org/Public/15.0.0/ucd/DerivedCoreProperties.txt\n'
+                'Unicode 15.1.0 can be found at\n'
+                'https://www.unicode.org/Public/15.1.0/ucd/DerivedCoreProperties.txt\n'
                 '\n'
                 '\n'
                 'Keywords\n'
@@ -7185,19 +7725,24 @@
                 '\n'
                 'Some identifiers are only reserved under specific contexts. '
                 'These are\n'
-                'known as *soft keywords*.  The identifiers "match", "case" '
-                'and "_" can\n'
-                'syntactically act as keywords in contexts related to the '
-                'pattern\n'
-                'matching statement, but this distinction is done at the '
-                'parser level,\n'
-                'not when tokenizing.\n'
+                'known as *soft keywords*.  The identifiers "match", "case", '
+                '"type" and\n'
+                '"_" can syntactically act as keywords in certain contexts, '
+                'but this\n'
+                'distinction is done at the parser level, not when '
+                'tokenizing.\n'
+                '\n'
+                'As soft keywords, their use in the grammar is possible while '
+                'still\n'
+                'preserving compatibility with existing code that uses these '
+                'names as\n'
+                'identifier names.\n'
                 '\n'
-                'As soft keywords, their use with pattern matching is possible '
-                'while\n'
-                'still preserving compatibility with existing code that uses '
-                '"match",\n'
-                '"case" and "_" as identifier names.\n'
+                '"match", "case", and "_" are used in the "match" statement. '
+                '"type" is\n'
+                'used in the "type" statement.\n'
+                '\n'
+                'Changed in version 3.12: "type" is now a soft keyword.\n'
                 '\n'
                 '\n'
                 'Reserved classes of identifiers\n'
@@ -7717,6 +8262,10 @@
            '\n'
            '* "import" statements.\n'
            '\n'
+           '* "type" statements.\n'
+           '\n'
+           '* type parameter lists.\n'
+           '\n'
            'The "import" statement of the form "from ... import *" binds all '
            'names\n'
            'defined in the imported module, except those beginning with an\n'
@@ -7816,7 +8365,8 @@
            'scope.\n'
            '"SyntaxError" is raised at compile time if the given name does '
            'not\n'
-           'exist in any enclosing function scope.\n'
+           'exist in any enclosing function scope. Type parameters cannot be\n'
+           'rebound with the "nonlocal" statement.\n'
            '\n'
            'The namespace for a module is automatically created the first time '
            'a\n'
@@ -7838,26 +8388,164 @@
            'of\n'
            'the class. The scope of names defined in a class block is limited '
            'to\n'
-           'the class block; it does not extend to the code blocks of methods '
-           '–\n'
-           'this includes comprehensions and generator expressions since they '
-           'are\n'
-           'implemented using a function scope.  This means that the '
-           'following\n'
-           'will fail:\n'
+           'the class block; it does not extend to the code blocks of '
+           'methods.\n'
+           'This includes comprehensions and generator expressions, but it '
+           'does\n'
+           'not include annotation scopes, which have access to their '
+           'enclosing\n'
+           'class scopes. This means that the following will fail:\n'
            '\n'
            '   class A:\n'
            '       a = 42\n'
            '       b = list(a + i for i in range(10))\n'
            '\n'
+           'However, the following will succeed:\n'
            '\n'
-           'Builtins and restricted execution\n'
-           '=================================\n'
+           '   class A:\n'
+           '       type Alias = Nested\n'
+           '       class Nested: pass\n'
            '\n'
-           '**CPython implementation detail:** Users should not touch\n'
-           '"__builtins__"; it is strictly an implementation detail.  Users\n'
-           'wanting to override values in the builtins namespace should '
-           '"import"\n'
+           "   print(A.Alias.__value__)  # <type 'A.Nested'>\n"
+           '\n'
+           '\n'
+           'Annotation scopes\n'
+           '=================\n'
+           '\n'
+           'Type parameter lists and "type" statements introduce *annotation\n'
+           'scopes*, which behave mostly like function scopes, but with some\n'
+           'exceptions discussed below. *Annotations* currently do not use\n'
+           'annotation scopes, but they are expected to use annotation scopes '
+           'in\n'
+           'Python 3.13 when **PEP 649** is implemented.\n'
+           '\n'
+           'Annotation scopes are used in the following contexts:\n'
+           '\n'
+           '* Type parameter lists for generic type aliases.\n'
+           '\n'
+           '* Type parameter lists for generic functions. A generic '
+           'function’s\n'
+           '  annotations are executed within the annotation scope, but its\n'
+           '  defaults and decorators are not.\n'
+           '\n'
+           '* Type parameter lists for generic classes. A generic class’s '
+           'base\n'
+           '  classes and keyword arguments are executed within the '
+           'annotation\n'
+           '  scope, but its decorators are not.\n'
+           '\n'
+           '* The bounds and constraints for type variables (lazily '
+           'evaluated).\n'
+           '\n'
+           '* The value of type aliases (lazily evaluated).\n'
+           '\n'
+           'Annotation scopes differ from function scopes in the following '
+           'ways:\n'
+           '\n'
+           '* Annotation scopes have access to their enclosing class '
+           'namespace. If\n'
+           '  an annotation scope is immediately within a class scope, or '
+           'within\n'
+           '  another annotation scope that is immediately within a class '
+           'scope,\n'
+           '  the code in the annotation scope can use names defined in the '
+           'class\n'
+           '  scope as if it were executed directly within the class body. '
+           'This\n'
+           '  contrasts with regular functions defined within classes, which\n'
+           '  cannot access names defined in the class scope.\n'
+           '\n'
+           '* Expressions in annotation scopes cannot contain "yield", "yield\n'
+           '  from", "await", or ":=" expressions. (These expressions are '
+           'allowed\n'
+           '  in other scopes contained within the annotation scope.)\n'
+           '\n'
+           '* Names defined in annotation scopes cannot be rebound with '
+           '"nonlocal"\n'
+           '  statements in inner scopes. This includes only type parameters, '
+           'as\n'
+           '  no other syntactic elements that can appear within annotation '
+           'scopes\n'
+           '  can introduce new names.\n'
+           '\n'
+           '* While annotation scopes have an internal name, that name is not\n'
+           '  reflected in the *__qualname__* of objects defined within the '
+           'scope.\n'
+           '  Instead, the "__qualname__" of such objects is as if the object '
+           'were\n'
+           '  defined in the enclosing scope.\n'
+           '\n'
+           'New in version 3.12: Annotation scopes were introduced in Python '
+           '3.12\n'
+           'as part of **PEP 695**.\n'
+           '\n'
+           '\n'
+           'Lazy evaluation\n'
+           '===============\n'
+           '\n'
+           'The values of type aliases created through the "type" statement '
+           'are\n'
+           '*lazily evaluated*. The same applies to the bounds and constraints '
+           'of\n'
+           'type variables created through the type parameter syntax. This '
+           'means\n'
+           'that they are not evaluated when the type alias or type variable '
+           'is\n'
+           'created. Instead, they are only evaluated when doing so is '
+           'necessary\n'
+           'to resolve an attribute access.\n'
+           '\n'
+           'Example:\n'
+           '\n'
+           '   >>> type Alias = 1/0\n'
+           '   >>> Alias.__value__\n'
+           '   Traceback (most recent call last):\n'
+           '     ...\n'
+           '   ZeroDivisionError: division by zero\n'
+           '   >>> def func[T: 1/0](): pass\n'
+           '   >>> T = func.__type_params__[0]\n'
+           '   >>> T.__bound__\n'
+           '   Traceback (most recent call last):\n'
+           '     ...\n'
+           '   ZeroDivisionError: division by zero\n'
+           '\n'
+           'Here the exception is raised only when the "__value__" attribute '
+           'of\n'
+           'the type alias or the "__bound__" attribute of the type variable '
+           'is\n'
+           'accessed.\n'
+           '\n'
+           'This behavior is primarily useful for references to types that '
+           'have\n'
+           'not yet been defined when the type alias or type variable is '
+           'created.\n'
+           'For example, lazy evaluation enables creation of mutually '
+           'recursive\n'
+           'type aliases:\n'
+           '\n'
+           '   from typing import Literal\n'
+           '\n'
+           '   type SimpleExpr = int | Parenthesized\n'
+           '   type Parenthesized = tuple[Literal["("], Expr, Literal[")"]]\n'
+           '   type Expr = SimpleExpr | tuple[SimpleExpr, Literal["+", "-"], '
+           'Expr]\n'
+           '\n'
+           'Lazily evaluated values are evaluated in annotation scope, which '
+           'means\n'
+           'that names that appear inside the lazily evaluated value are '
+           'looked up\n'
+           'as if they were used in the immediately enclosing scope.\n'
+           '\n'
+           'New in version 3.12.\n'
+           '\n'
+           '\n'
+           'Builtins and restricted execution\n'
+           '=================================\n'
+           '\n'
+           '**CPython implementation detail:** Users should not touch\n'
+           '"__builtins__"; it is strictly an implementation detail.  Users\n'
+           'wanting to override values in the builtins namespace should '
+           '"import"\n'
            'the "builtins" module and modify its attributes appropriately.\n'
            '\n'
            'The builtins namespace associated with the execution of a code '
@@ -9013,6 +9701,14 @@
                  '\n'
                  '   New in version 3.3.\n'
                  '\n'
+                 'definition.__type_params__\n'
+                 '\n'
+                 '   The type parameters of generic classes, functions, and '
+                 'type\n'
+                 '   aliases.\n'
+                 '\n'
+                 '   New in version 3.12.\n'
+                 '\n'
                  'class.__mro__\n'
                  '\n'
                  '   This attribute is a tuple of classes that are considered '
@@ -9036,7 +9732,8 @@
                  '   still alive.  The list is in definition order.  Example:\n'
                  '\n'
                  '      >>> int.__subclasses__()\n'
-                 "      [<class 'bool'>]\n",
+                 "      [<class 'bool'>, <enum 'IntEnum'>, <flag 'IntFlag'>, "
+                 "<class 're._constants._NamedIntConstant'>]\n",
  'specialnames': 'Special method names\n'
                  '********************\n'
                  '\n'
@@ -9509,8 +10206,7 @@
                  '     by carefully chosen inputs that exploit the worst case\n'
                  '     performance of a dict insertion, O(n^2) complexity.  '
                  'See\n'
-                 '     http://www.ocert.org/advisories/ocert-2011-003.html '
-                 'for\n'
+                 '     http://ocert.org/advisories/ocert-2011-003.html for\n'
                  '     details.Changing hash values affects the iteration '
                  'order of sets.\n'
                  '     Python has never made guarantees about this ordering '
@@ -9570,7 +10266,7 @@
                  'would have\n'
                  '   no way to access other attributes of the instance.  Note '
                  'that at\n'
-                 '   least for instance variables, you can fake total control '
+                 '   least for instance variables, you can take total control '
                  'by not\n'
                  '   inserting any values in the instance attribute dictionary '
                  '(but\n'
@@ -9928,9 +10624,7 @@
                  'each\n'
                  '   instance.\n'
                  '\n'
-                 '\n'
-                 'Notes on using *__slots__*\n'
-                 '~~~~~~~~~~~~~~~~~~~~~~~~~~\n'
+                 'Notes on using *__slots__*:\n'
                  '\n'
                  '* When inheriting from a class without *__slots__*, the '
                  '"__dict__" and\n'
@@ -10164,20 +10858,37 @@
                  'Resolving MRO entries\n'
                  '---------------------\n'
                  '\n'
-                 'If a base that appears in class definition is not an '
+                 'object.__mro_entries__(self, bases)\n'
+                 '\n'
+                 '   If a base that appears in a class definition is not an '
                  'instance of\n'
-                 '"type", then an "__mro_entries__" method is searched on it. '
-                 'If found,\n'
-                 'it is called with the original bases tuple. This method must '
-                 'return a\n'
-                 'tuple of classes that will be used instead of this base. The '
-                 'tuple may\n'
-                 'be empty, in such case the original base is ignored.\n'
+                 '   "type", then an "__mro_entries__()" method is searched on '
+                 'the base.\n'
+                 '   If an "__mro_entries__()" method is found, the base is '
+                 'substituted\n'
+                 '   with the result of a call to "__mro_entries__()" when '
+                 'creating the\n'
+                 '   class. The method is called with the original bases tuple '
+                 'passed to\n'
+                 '   the *bases* parameter, and must return a tuple of classes '
+                 'that will\n'
+                 '   be used instead of the base. The returned tuple may be '
+                 'empty: in\n'
+                 '   these cases, the original base is ignored.\n'
                  '\n'
                  'See also:\n'
                  '\n'
-                 '  **PEP 560** - Core support for typing module and generic '
-                 'types\n'
+                 '  "types.resolve_bases()"\n'
+                 '     Dynamically resolve bases that are not instances of '
+                 '"type".\n'
+                 '\n'
+                 '  "types.get_original_bases()"\n'
+                 '     Retrieve a class’s “original bases� prior to '
+                 'modifications by\n'
+                 '     "__mro_entries__()".\n'
+                 '\n'
+                 '  **PEP 560**\n'
+                 '     Core support for typing module and generic types.\n'
                  '\n'
                  '\n'
                  'Determining the appropriate metaclass\n'
@@ -11153,6 +11864,61 @@
                  '     The specification for the Python "match" statement.\n'
                  '\n'
                  '\n'
+                 'Emulating buffer types\n'
+                 '======================\n'
+                 '\n'
+                 'The buffer protocol provides a way for Python objects to '
+                 'expose\n'
+                 'efficient access to a low-level memory array. This protocol '
+                 'is\n'
+                 'implemented by builtin types such as "bytes" and '
+                 '"memoryview", and\n'
+                 'third-party libraries may define additional buffer types.\n'
+                 '\n'
+                 'While buffer types are usually implemented in C, it is also '
+                 'possible\n'
+                 'to implement the protocol in Python.\n'
+                 '\n'
+                 'object.__buffer__(self, flags)\n'
+                 '\n'
+                 '   Called when a buffer is requested from *self* (for '
+                 'example, by the\n'
+                 '   "memoryview" constructor). The *flags* argument is an '
+                 'integer\n'
+                 '   representing the kind of buffer requested, affecting for '
+                 'example\n'
+                 '   whether the returned buffer is read-only or writable.\n'
+                 '   "inspect.BufferFlags" provides a convenient way to '
+                 'interpret the\n'
+                 '   flags. The method must return a "memoryview" object.\n'
+                 '\n'
+                 'object.__release_buffer__(self, buffer)\n'
+                 '\n'
+                 '   Called when a buffer is no longer needed. The *buffer* '
+                 'argument is\n'
+                 '   a "memoryview" object that was previously returned by\n'
+                 '   "__buffer__()". The method must release any resources '
+                 'associated\n'
+                 '   with the buffer. This method should return "None". Buffer '
+                 'objects\n'
+                 '   that do not need to perform any cleanup are not required '
+                 'to\n'
+                 '   implement this method.\n'
+                 '\n'
+                 'New in version 3.12.\n'
+                 '\n'
+                 'See also:\n'
+                 '\n'
+                 '  **PEP 688** - Making the buffer protocol accessible in '
+                 'Python\n'
+                 '     Introduces the Python "__buffer__" and '
+                 '"__release_buffer__"\n'
+                 '     methods.\n'
+                 '\n'
+                 '  "collections.abc.Buffer"\n'
+                 '     ABC for buffer types.\n'
+                 '\n'
+                 '\n'
                  'Special method lookup\n'
                  '=====================\n'
                  '\n'
@@ -11300,8 +12066,8 @@
                    '   "casefold()" converts it to ""ss"".\n'
                    '\n'
                    '   The casefolding algorithm is described in section 3.13 '
-                   'of the\n'
-                   '   Unicode Standard.\n'
+                   '‘Default\n'
+                   '   Case Folding’ of the Unicode Standard.\n'
                    '\n'
                    '   New in version 3.3.\n'
                    '\n'
@@ -11519,8 +12285,9 @@
                    '   being one of “Lm�, “Lt�, “Lu�, “Ll�, or “Lo�.  Note '
                    'that this is\n'
                    '   different from the Alphabetic property defined in the '
-                   'Unicode\n'
-                   '   Standard.\n'
+                   'section 4.10\n'
+                   '   ‘Letters, Alphabetic, and Ideographic’ of the Unicode '
+                   'Standard.\n'
                    '\n'
                    'str.isascii()\n'
                    '\n'
@@ -11692,8 +12459,8 @@
                    '   converted to lowercase.\n'
                    '\n'
                    '   The lowercasing algorithm used is described in section '
-                   '3.13 of the\n'
-                   '   Unicode Standard.\n'
+                   '3.13\n'
+                   '   ‘Default Case Folding’ of the Unicode Standard.\n'
                    '\n'
                    'str.lstrip([chars])\n'
                    '\n'
@@ -11787,13 +12554,19 @@
                    '\n'
                    '   New in version 3.9.\n'
                    '\n'
-                   'str.replace(old, new[, count])\n'
+                   'str.replace(old, new, count=-1)\n'
                    '\n'
                    '   Return a copy of the string with all occurrences of '
                    'substring *old*\n'
-                   '   replaced by *new*.  If the optional argument *count* is '
-                   'given, only\n'
-                   '   the first *count* occurrences are replaced.\n'
+                   '   replaced by *new*.  If *count* is given, only the first '
+                   '*count*\n'
+                   '   occurrences are replaced. If *count* is not specified '
+                   'or "-1", then\n'
+                   '   all occurrences are replaced.\n'
+                   '\n'
+                   '   Changed in version 3.13: *count* is now supported as a '
+                   'keyword\n'
+                   '   argument.\n'
                    '\n'
                    'str.rfind(sub[, start[, end]])\n'
                    '\n'
@@ -11833,7 +12606,7 @@
                    'followed by\n'
                    '   the string itself.\n'
                    '\n'
-                   'str.rsplit(sep=None, maxsplit=- 1)\n'
+                   'str.rsplit(sep=None, maxsplit=-1)\n'
                    '\n'
                    '   Return a list of the words in the string, using *sep* '
                    'as the\n'
@@ -11874,7 +12647,7 @@
                    "      >>> 'Monty Python'.removesuffix(' Python')\n"
                    "      'Monty'\n"
                    '\n'
-                   'str.split(sep=None, maxsplit=- 1)\n'
+                   'str.split(sep=None, maxsplit=-1)\n'
                    '\n'
                    '   Return a list of the words in the string, using *sep* '
                    'as the\n'
@@ -12159,8 +12932,8 @@
                    '   uppercase), but e.g. “Lt� (Letter, titlecase).\n'
                    '\n'
                    '   The uppercasing algorithm used is described in section '
-                   '3.13 of the\n'
-                   '   Unicode Standard.\n'
+                   '3.13\n'
+                   '   ‘Default Case Folding’ of the Unicode Standard.\n'
                    '\n'
                    'str.zfill(width)\n'
                    '\n'
@@ -12284,77 +13057,81 @@
             'the\n'
             'literal, i.e. either "\'" or """.)\n'
             '\n'
+            '\n'
+            'Escape sequences\n'
+            '================\n'
+            '\n'
             'Unless an "\'r\'" or "\'R\'" prefix is present, escape sequences '
             'in string\n'
             'and bytes literals are interpreted according to rules similar to '
             'those\n'
             'used by Standard C.  The recognized escape sequences are:\n'
             '\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| Escape Sequence   | Meaning                           | Notes   '
-            '|\n'
-            '|===================|===================================|=========|\n'
-            '| "\\"<newline>      | Backslash and newline ignored     | '
-            '(1)     |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\\\"              | Backslash ("\\")                   '
-            '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\\'"              | Single quote ("\'")                '
-            '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\""              | Double quote (""")                '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| Escape Sequence           | Meaning                           | '
+            'Notes   |\n'
+            '|===========================|===================================|=========|\n'
+            '| "\\"<newline>              | Backslash and newline ignored     '
+            '| (1)     |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\\\"                      | Backslash '
+            '("\\")                   |         |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\\'"                      | Single quote '
+            '("\'")                |         |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\""                      | Double quote (""")                '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\a"              | ASCII Bell (BEL)                  '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\a"                      | ASCII Bell (BEL)                  '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\b"              | ASCII Backspace (BS)              '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\b"                      | ASCII Backspace (BS)              '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\f"              | ASCII Formfeed (FF)               '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\f"                      | ASCII Formfeed (FF)               '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\n"              | ASCII Linefeed (LF)               '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\n"                      | ASCII Linefeed (LF)               '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\r"              | ASCII Carriage Return (CR)        '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\r"                      | ASCII Carriage Return (CR)        '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\t"              | ASCII Horizontal Tab (TAB)        '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\t"                      | ASCII Horizontal Tab (TAB)        '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\v"              | ASCII Vertical Tab (VT)           '
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\v"                      | ASCII Vertical Tab (VT)           '
             '|         |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\ooo"            | Character with octal value *ooo*  | '
-            '(2,4)   |\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\xhh"            | Character with hex value *hh*     | '
-            '(3,4)   |\n'
-            '+-------------------+-----------------------------------+---------+\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\*ooo*"                  | Character with octal value *ooo*  '
+            '| (2,4)   |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\x*hh*"                  | Character with hex value *hh*     '
+            '| (3,4)   |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
             '\n'
             'Escape sequences only recognized in string literals are:\n'
             '\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| Escape Sequence   | Meaning                           | Notes   '
-            '|\n'
-            '|===================|===================================|=========|\n'
-            '| "\\N{name}"        | Character named *name* in the     | '
-            '(5)     |\n'
-            '|                   | Unicode database                  |         '
-            '|\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\uxxxx"          | Character with 16-bit hex value   | '
-            '(6)     |\n'
-            '|                   | *xxxx*                            |         '
-            '|\n'
-            '+-------------------+-----------------------------------+---------+\n'
-            '| "\\Uxxxxxxxx"      | Character with 32-bit hex value   | '
-            '(7)     |\n'
-            '|                   | *xxxxxxxx*                        |         '
-            '|\n'
-            '+-------------------+-----------------------------------+---------+\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| Escape Sequence           | Meaning                           | '
+            'Notes   |\n'
+            '|===========================|===================================|=========|\n'
+            '| "\\N{*name*}"              | Character named *name* in the     '
+            '| (5)     |\n'
+            '|                           | Unicode database                  '
+            '|         |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\u*xxxx*"                | Character with 16-bit hex value   '
+            '| (6)     |\n'
+            '|                           | *xxxx*                            '
+            '|         |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
+            '| "\\U*xxxxxxxx*"            | Character with 32-bit hex value   '
+            '| (7)     |\n'
+            '|                           | *xxxxxxxx*                        '
+            '|         |\n'
+            '+---------------------------+-----------------------------------+---------+\n'
             '\n'
             'Notes:\n'
             '\n'
@@ -12411,15 +13188,13 @@
             'bytes\n'
             'literals.\n'
             '\n'
-            '   Changed in version 3.6: Unrecognized escape sequences produce '
-            'a\n'
-            '   "DeprecationWarning".\n'
+            'Changed in version 3.6: Unrecognized escape sequences produce a\n'
+            '"DeprecationWarning".\n'
             '\n'
-            '   Changed in version 3.12: Unrecognized escape sequences produce '
-            'a\n'
-            '   "SyntaxWarning". In a future Python version they will be '
-            'eventually\n'
-            '   a "SyntaxError".\n'
+            'Changed in version 3.12: Unrecognized escape sequences produce a\n'
+            '"SyntaxWarning". In a future Python version they will be '
+            'eventually a\n'
+            '"SyntaxError".\n'
             '\n'
             'Even in a raw literal, quotes can be escaped with a backslash, '
             'but the\n'
@@ -12533,7 +13308,7 @@
           'are\n'
           'most of the built-in objects considered false:\n'
           '\n'
-          '* constants defined to be false: "None" and "False".\n'
+          '* constants defined to be false: "None" and "False"\n'
           '\n'
           '* zero of any numeric type: "0", "0.0", "0j", "Decimal(0)",\n'
           '  "Fraction(0, 1)"\n'
@@ -12704,9 +13479,10 @@
         '\n'
         'Any remaining exceptions that were not handled by any "except*" '
         'clause\n'
-        'are re-raised at the end, combined into an exception group along '
-        'with\n'
-        'all exceptions that were raised from within "except*" clauses.\n'
+        'are re-raised at the end, along with all exceptions that were raised\n'
+        'from within the "except*" clauses. If this list contains more than '
+        'one\n'
+        'exception to reraise, they are combined into an exception group.\n'
         '\n'
         'If the raised exception is not an exception group and its type '
         'matches\n'
@@ -12813,1144 +13589,1191 @@
           'definition\n'
           'may change in the future.\n'
           '\n'
+          '\n'
           'None\n'
-          '   This type has a single value.  There is a single object with '
-          'this\n'
-          '   value. This object is accessed through the built-in name "None". '
-          'It\n'
-          '   is used to signify the absence of a value in many situations, '
-          'e.g.,\n'
-          '   it is returned from functions that don’t explicitly return\n'
-          '   anything. Its truth value is false.\n'
+          '====\n'
+          '\n'
+          'This type has a single value.  There is a single object with this\n'
+          'value. This object is accessed through the built-in name "None". It '
+          'is\n'
+          'used to signify the absence of a value in many situations, e.g., it '
+          'is\n'
+          'returned from functions that don’t explicitly return anything. Its\n'
+          'truth value is false.\n'
+          '\n'
           '\n'
           'NotImplemented\n'
-          '   This type has a single value.  There is a single object with '
-          'this\n'
-          '   value. This object is accessed through the built-in name\n'
-          '   "NotImplemented". Numeric methods and rich comparison methods\n'
-          '   should return this value if they do not implement the operation '
-          'for\n'
-          '   the operands provided.  (The interpreter will then try the\n'
-          '   reflected operation, or some other fallback, depending on the\n'
-          '   operator.)  It should not be evaluated in a boolean context.\n'
+          '==============\n'
           '\n'
-          '   See Implementing the arithmetic operations for more details.\n'
+          'This type has a single value.  There is a single object with this\n'
+          'value. This object is accessed through the built-in name\n'
+          '"NotImplemented". Numeric methods and rich comparison methods '
+          'should\n'
+          'return this value if they do not implement the operation for the\n'
+          'operands provided.  (The interpreter will then try the reflected\n'
+          'operation, or some other fallback, depending on the operator.)  It\n'
+          'should not be evaluated in a boolean context.\n'
+          '\n'
+          'See Implementing the arithmetic operations for more details.\n'
+          '\n'
+          'Changed in version 3.9: Evaluating "NotImplemented" in a boolean\n'
+          'context is deprecated. While it currently evaluates as true, it '
+          'will\n'
+          'emit a "DeprecationWarning". It will raise a "TypeError" in a '
+          'future\n'
+          'version of Python.\n'
           '\n'
-          '   Changed in version 3.9: Evaluating "NotImplemented" in a '
-          'boolean\n'
-          '   context is deprecated. While it currently evaluates as true, it\n'
-          '   will emit a "DeprecationWarning". It will raise a "TypeError" in '
-          'a\n'
-          '   future version of Python.\n'
           '\n'
           'Ellipsis\n'
-          '   This type has a single value.  There is a single object with '
-          'this\n'
-          '   value. This object is accessed through the literal "..." or the\n'
-          '   built-in name "Ellipsis".  Its truth value is true.\n'
+          '========\n'
+          '\n'
+          'This type has a single value.  There is a single object with this\n'
+          'value. This object is accessed through the literal "..." or the '
+          'built-\n'
+          'in name "Ellipsis".  Its truth value is true.\n'
+          '\n'
           '\n'
           '"numbers.Number"\n'
-          '   These are created by numeric literals and returned as results '
-          'by\n'
-          '   arithmetic operators and arithmetic built-in functions.  '
-          'Numeric\n'
-          '   objects are immutable; once created their value never changes.\n'
-          '   Python numbers are of course strongly related to mathematical\n'
-          '   numbers, but subject to the limitations of numerical '
-          'representation\n'
-          '   in computers.\n'
-          '\n'
-          '   The string representations of the numeric classes, computed by\n'
-          '   "__repr__()" and "__str__()", have the following properties:\n'
-          '\n'
-          '   * They are valid numeric literals which, when passed to their '
+          '================\n'
+          '\n'
+          'These are created by numeric literals and returned as results by\n'
+          'arithmetic operators and arithmetic built-in functions.  Numeric\n'
+          'objects are immutable; once created their value never changes.  '
+          'Python\n'
+          'numbers are of course strongly related to mathematical numbers, '
+          'but\n'
+          'subject to the limitations of numerical representation in '
+          'computers.\n'
+          '\n'
+          'The string representations of the numeric classes, computed by\n'
+          '"__repr__()" and "__str__()", have the following properties:\n'
+          '\n'
+          '* They are valid numeric literals which, when passed to their '
           'class\n'
-          '     constructor, produce an object having the value of the '
-          'original\n'
-          '     numeric.\n'
+          '  constructor, produce an object having the value of the original\n'
+          '  numeric.\n'
           '\n'
-          '   * The representation is in base 10, when possible.\n'
+          '* The representation is in base 10, when possible.\n'
           '\n'
-          '   * Leading zeros, possibly excepting a single zero before a '
-          'decimal\n'
-          '     point, are not shown.\n'
+          '* Leading zeros, possibly excepting a single zero before a decimal\n'
+          '  point, are not shown.\n'
           '\n'
-          '   * Trailing zeros, possibly excepting a single zero after a '
-          'decimal\n'
-          '     point, are not shown.\n'
+          '* Trailing zeros, possibly excepting a single zero after a decimal\n'
+          '  point, are not shown.\n'
           '\n'
-          '   * A sign is shown only when the number is negative.\n'
+          '* A sign is shown only when the number is negative.\n'
           '\n'
-          '   Python distinguishes between integers, floating point numbers, '
-          'and\n'
-          '   complex numbers:\n'
+          'Python distinguishes between integers, floating point numbers, and\n'
+          'complex numbers:\n'
           '\n'
-          '   "numbers.Integral"\n'
-          '      These represent elements from the mathematical set of '
-          'integers\n'
-          '      (positive and negative).\n'
           '\n'
-          '      There are two types of integers:\n'
+          '"numbers.Integral"\n'
+          '------------------\n'
           '\n'
-          '      Integers ("int")\n'
-          '         These represent numbers in an unlimited range, subject to\n'
-          '         available (virtual) memory only.  For the purpose of '
-          'shift\n'
-          '         and mask operations, a binary representation is assumed, '
-          'and\n'
-          '         negative numbers are represented in a variant of 2’s\n'
-          '         complement which gives the illusion of an infinite string '
-          'of\n'
-          '         sign bits extending to the left.\n'
+          'These represent elements from the mathematical set of integers\n'
+          '(positive and negative).\n'
           '\n'
-          '      Booleans ("bool")\n'
-          '         These represent the truth values False and True.  The two\n'
-          '         objects representing the values "False" and "True" are '
-          'the\n'
-          '         only Boolean objects. The Boolean type is a subtype of '
+          'Note:\n'
+          '\n'
+          '  The rules for integer representation are intended to give the '
+          'most\n'
+          '  meaningful interpretation of shift and mask operations involving\n'
+          '  negative integers.\n'
+          '\n'
+          'There are two types of integers:\n'
+          '\n'
+          'Integers ("int")\n'
+          '   These represent numbers in an unlimited range, subject to '
+          'available\n'
+          '   (virtual) memory only.  For the purpose of shift and mask\n'
+          '   operations, a binary representation is assumed, and negative\n'
+          '   numbers are represented in a variant of 2’s complement which '
+          'gives\n'
+          '   the illusion of an infinite string of sign bits extending to '
           'the\n'
-          '         integer type, and Boolean values behave like the values 0 '
-          'and\n'
-          '         1, respectively, in almost all contexts, the exception '
-          'being\n'
-          '         that when converted to a string, the strings ""False"" or\n'
-          '         ""True"" are returned, respectively.\n'
+          '   left.\n'
+          '\n'
+          'Booleans ("bool")\n'
+          '   These represent the truth values False and True.  The two '
+          'objects\n'
+          '   representing the values "False" and "True" are the only Boolean\n'
+          '   objects. The Boolean type is a subtype of the integer type, and\n'
+          '   Boolean values behave like the values 0 and 1, respectively, in\n'
+          '   almost all contexts, the exception being that when converted to '
+          'a\n'
+          '   string, the strings ""False"" or ""True"" are returned,\n'
+          '   respectively.\n'
+          '\n'
           '\n'
-          '      The rules for integer representation are intended to give '
+          '"numbers.Real" ("float")\n'
+          '------------------------\n'
+          '\n'
+          'These represent machine-level double precision floating point '
+          'numbers.\n'
+          'You are at the mercy of the underlying machine architecture (and C '
+          'or\n'
+          'Java implementation) for the accepted range and handling of '
+          'overflow.\n'
+          'Python does not support single-precision floating point numbers; '
           'the\n'
-          '      most meaningful interpretation of shift and mask operations\n'
-          '      involving negative integers.\n'
-          '\n'
-          '   "numbers.Real" ("float")\n'
-          '      These represent machine-level double precision floating '
-          'point\n'
-          '      numbers. You are at the mercy of the underlying machine\n'
-          '      architecture (and C or Java implementation) for the accepted\n'
-          '      range and handling of overflow. Python does not support '
-          'single-\n'
-          '      precision floating point numbers; the savings in processor '
-          'and\n'
-          '      memory usage that are usually the reason for using these are\n'
-          '      dwarfed by the overhead of using objects in Python, so there '
-          'is\n'
-          '      no reason to complicate the language with two kinds of '
-          'floating\n'
-          '      point numbers.\n'
-          '\n'
-          '   "numbers.Complex" ("complex")\n'
-          '      These represent complex numbers as a pair of machine-level\n'
-          '      double precision floating point numbers.  The same caveats '
-          'apply\n'
-          '      as for floating point numbers. The real and imaginary parts '
-          'of a\n'
-          '      complex number "z" can be retrieved through the read-only\n'
-          '      attributes "z.real" and "z.imag".\n'
+          'savings in processor and memory usage that are usually the reason '
+          'for\n'
+          'using these are dwarfed by the overhead of using objects in Python, '
+          'so\n'
+          'there is no reason to complicate the language with two kinds of\n'
+          'floating point numbers.\n'
+          '\n'
+          '\n'
+          '"numbers.Complex" ("complex")\n'
+          '-----------------------------\n'
+          '\n'
+          'These represent complex numbers as a pair of machine-level double\n'
+          'precision floating point numbers.  The same caveats apply as for\n'
+          'floating point numbers. The real and imaginary parts of a complex\n'
+          'number "z" can be retrieved through the read-only attributes '
+          '"z.real"\n'
+          'and "z.imag".\n'
+          '\n'
           '\n'
           'Sequences\n'
-          '   These represent finite ordered sets indexed by non-negative\n'
-          '   numbers. The built-in function "len()" returns the number of '
-          'items\n'
-          '   of a sequence. When the length of a sequence is *n*, the index '
+          '=========\n'
+          '\n'
+          'These represent finite ordered sets indexed by non-negative '
+          'numbers.\n'
+          'The built-in function "len()" returns the number of items of a\n'
+          'sequence. When the length of a sequence is *n*, the index set '
+          'contains\n'
+          'the numbers 0, 1, …, *n*-1.  Item *i* of sequence *a* is selected '
+          'by\n'
+          '"a[i]".\n'
+          '\n'
+          'Sequences also support slicing: "a[i:j]" selects all items with '
+          'index\n'
+          '*k* such that *i* "<=" *k* "<" *j*.  When used as an expression, a\n'
+          'slice is a sequence of the same type.  This implies that the index '
           'set\n'
-          '   contains the numbers 0, 1, …, *n*-1.  Item *i* of sequence *a* '
-          'is\n'
-          '   selected by "a[i]".\n'
+          'is renumbered so that it starts at 0.\n'
           '\n'
-          '   Sequences also support slicing: "a[i:j]" selects all items with\n'
-          '   index *k* such that *i* "<=" *k* "<" *j*.  When used as an\n'
-          '   expression, a slice is a sequence of the same type.  This '
-          'implies\n'
-          '   that the index set is renumbered so that it starts at 0.\n'
+          'Some sequences also support “extended slicing� with a third “step�\n'
+          'parameter: "a[i:j:k]" selects all items of *a* with index *x* where '
+          '"x\n'
+          '= i + n*k", *n* ">=" "0" and *i* "<=" *x* "<" *j*.\n'
           '\n'
-          '   Some sequences also support “extended slicing� with a third '
-          '“step�\n'
-          '   parameter: "a[i:j:k]" selects all items of *a* with index *x* '
-          'where\n'
-          '   "x = i + n*k", *n* ">=" "0" and *i* "<=" *x* "<" *j*.\n'
+          'Sequences are distinguished according to their mutability:\n'
           '\n'
-          '   Sequences are distinguished according to their mutability:\n'
           '\n'
-          '   Immutable sequences\n'
-          '      An object of an immutable sequence type cannot change once it '
-          'is\n'
-          '      created.  (If the object contains references to other '
-          'objects,\n'
-          '      these other objects may be mutable and may be changed; '
-          'however,\n'
-          '      the collection of objects directly referenced by an '
-          'immutable\n'
-          '      object cannot change.)\n'
+          'Immutable sequences\n'
+          '-------------------\n'
           '\n'
-          '      The following types are immutable sequences:\n'
+          'An object of an immutable sequence type cannot change once it is\n'
+          'created.  (If the object contains references to other objects, '
+          'these\n'
+          'other objects may be mutable and may be changed; however, the\n'
+          'collection of objects directly referenced by an immutable object\n'
+          'cannot change.)\n'
           '\n'
-          '      Strings\n'
-          '         A string is a sequence of values that represent Unicode '
-          'code\n'
-          '         points. All the code points in the range "U+0000 - '
-          'U+10FFFF"\n'
-          '         can be represented in a string.  Python doesn’t have a '
-          'char\n'
-          '         type; instead, every code point in the string is '
-          'represented\n'
-          '         as a string object with length "1".  The built-in '
-          'function\n'
-          '         "ord()" converts a code point from its string form to an\n'
-          '         integer in the range "0 - 10FFFF"; "chr()" converts an\n'
-          '         integer in the range "0 - 10FFFF" to the corresponding '
-          'length\n'
-          '         "1" string object. "str.encode()" can be used to convert '
-          'a\n'
-          '         "str" to "bytes" using the given text encoding, and\n'
-          '         "bytes.decode()" can be used to achieve the opposite.\n'
+          'The following types are immutable sequences:\n'
           '\n'
-          '      Tuples\n'
-          '         The items of a tuple are arbitrary Python objects. Tuples '
-          'of\n'
-          '         two or more items are formed by comma-separated lists of\n'
-          '         expressions.  A tuple of one item (a ‘singleton’) can be\n'
-          '         formed by affixing a comma to an expression (an expression '
-          'by\n'
-          '         itself does not create a tuple, since parentheses must be\n'
-          '         usable for grouping of expressions).  An empty tuple can '
+          'Strings\n'
+          '   A string is a sequence of values that represent Unicode code\n'
+          '   points. All the code points in the range "U+0000 - U+10FFFF" can '
           'be\n'
-          '         formed by an empty pair of parentheses.\n'
-          '\n'
-          '      Bytes\n'
-          '         A bytes object is an immutable array.  The items are '
-          '8-bit\n'
-          '         bytes, represented by integers in the range 0 <= x < 256.\n'
-          '         Bytes literals (like "b\'abc\'") and the built-in '
-          '"bytes()"\n'
-          '         constructor can be used to create bytes objects.  Also, '
-          'bytes\n'
-          '         objects can be decoded to strings via the "decode()" '
-          'method.\n'
+          '   represented in a string.  Python doesn’t have a char type; '
+          'instead,\n'
+          '   every code point in the string is represented as a string '
+          'object\n'
+          '   with length "1".  The built-in function "ord()" converts a code\n'
+          '   point from its string form to an integer in the range "0 - '
+          '10FFFF";\n'
+          '   "chr()" converts an integer in the range "0 - 10FFFF" to the\n'
+          '   corresponding length "1" string object. "str.encode()" can be '
+          'used\n'
+          '   to convert a "str" to "bytes" using the given text encoding, '
+          'and\n'
+          '   "bytes.decode()" can be used to achieve the opposite.\n'
           '\n'
-          '   Mutable sequences\n'
-          '      Mutable sequences can be changed after they are created.  '
-          'The\n'
-          '      subscription and slicing notations can be used as the target '
+          'Tuples\n'
+          '   The items of a tuple are arbitrary Python objects. Tuples of two '
+          'or\n'
+          '   more items are formed by comma-separated lists of expressions.  '
+          'A\n'
+          '   tuple of one item (a ‘singleton’) can be formed by affixing a '
+          'comma\n'
+          '   to an expression (an expression by itself does not create a '
+          'tuple,\n'
+          '   since parentheses must be usable for grouping of expressions).  '
+          'An\n'
+          '   empty tuple can be formed by an empty pair of parentheses.\n'
+          '\n'
+          'Bytes\n'
+          '   A bytes object is an immutable array.  The items are 8-bit '
+          'bytes,\n'
+          '   represented by integers in the range 0 <= x < 256.  Bytes '
+          'literals\n'
+          '   (like "b\'abc\'") and the built-in "bytes()" constructor can be '
+          'used\n'
+          '   to create bytes objects.  Also, bytes objects can be decoded to\n'
+          '   strings via the "decode()" method.\n'
+          '\n'
+          '\n'
+          'Mutable sequences\n'
+          '-----------------\n'
+          '\n'
+          'Mutable sequences can be changed after they are created.  The\n'
+          'subscription and slicing notations can be used as the target of\n'
+          'assignment and "del" (delete) statements.\n'
+          '\n'
+          'Note:\n'
+          '\n'
+          '  The "collections" and "array" module provide additional examples '
           'of\n'
-          '      assignment and "del" (delete) statements.\n'
+          '  mutable sequence types.\n'
           '\n'
-          '      There are currently two intrinsic mutable sequence types:\n'
+          'There are currently two intrinsic mutable sequence types:\n'
           '\n'
-          '      Lists\n'
-          '         The items of a list are arbitrary Python objects.  Lists '
-          'are\n'
-          '         formed by placing a comma-separated list of expressions '
-          'in\n'
-          '         square brackets. (Note that there are no special cases '
-          'needed\n'
-          '         to form lists of length 0 or 1.)\n'
+          'Lists\n'
+          '   The items of a list are arbitrary Python objects.  Lists are '
+          'formed\n'
+          '   by placing a comma-separated list of expressions in square\n'
+          '   brackets. (Note that there are no special cases needed to form\n'
+          '   lists of length 0 or 1.)\n'
           '\n'
-          '      Byte Arrays\n'
-          '         A bytearray object is a mutable array. They are created '
-          'by\n'
-          '         the built-in "bytearray()" constructor.  Aside from being\n'
-          '         mutable (and hence unhashable), byte arrays otherwise '
-          'provide\n'
-          '         the same interface and functionality as immutable "bytes"\n'
-          '         objects.\n'
+          'Byte Arrays\n'
+          '   A bytearray object is a mutable array. They are created by the\n'
+          '   built-in "bytearray()" constructor.  Aside from being mutable '
+          '(and\n'
+          '   hence unhashable), byte arrays otherwise provide the same '
+          'interface\n'
+          '   and functionality as immutable "bytes" objects.\n'
           '\n'
-          '      The extension module "array" provides an additional example '
-          'of a\n'
-          '      mutable sequence type, as does the "collections" module.\n'
           '\n'
           'Set types\n'
-          '   These represent unordered, finite sets of unique, immutable\n'
-          '   objects. As such, they cannot be indexed by any subscript. '
-          'However,\n'
-          '   they can be iterated over, and the built-in function "len()"\n'
-          '   returns the number of items in a set. Common uses for sets are '
-          'fast\n'
-          '   membership testing, removing duplicates from a sequence, and\n'
-          '   computing mathematical operations such as intersection, union,\n'
-          '   difference, and symmetric difference.\n'
-          '\n'
-          '   For set elements, the same immutability rules apply as for\n'
-          '   dictionary keys. Note that numeric types obey the normal rules '
-          'for\n'
-          '   numeric comparison: if two numbers compare equal (e.g., "1" and\n'
-          '   "1.0"), only one of them can be contained in a set.\n'
+          '=========\n'
+          '\n'
+          'These represent unordered, finite sets of unique, immutable '
+          'objects.\n'
+          'As such, they cannot be indexed by any subscript. However, they can '
+          'be\n'
+          'iterated over, and the built-in function "len()" returns the number '
+          'of\n'
+          'items in a set. Common uses for sets are fast membership testing,\n'
+          'removing duplicates from a sequence, and computing mathematical\n'
+          'operations such as intersection, union, difference, and symmetric\n'
+          'difference.\n'
+          '\n'
+          'For set elements, the same immutability rules apply as for '
+          'dictionary\n'
+          'keys. Note that numeric types obey the normal rules for numeric\n'
+          'comparison: if two numbers compare equal (e.g., "1" and "1.0"), '
+          'only\n'
+          'one of them can be contained in a set.\n'
+          '\n'
+          'There are currently two intrinsic set types:\n'
           '\n'
-          '   There are currently two intrinsic set types:\n'
+          'Sets\n'
+          '   These represent a mutable set. They are created by the built-in\n'
+          '   "set()" constructor and can be modified afterwards by several\n'
+          '   methods, such as "add()".\n'
           '\n'
-          '   Sets\n'
-          '      These represent a mutable set. They are created by the '
+          'Frozen sets\n'
+          '   These represent an immutable set.  They are created by the '
           'built-in\n'
-          '      "set()" constructor and can be modified afterwards by '
-          'several\n'
-          '      methods, such as "add()".\n'
-          '\n'
-          '   Frozen sets\n'
-          '      These represent an immutable set.  They are created by the\n'
-          '      built-in "frozenset()" constructor.  As a frozenset is '
-          'immutable\n'
-          '      and *hashable*, it can be used again as an element of '
-          'another\n'
-          '      set, or as a dictionary key.\n'
+          '   "frozenset()" constructor.  As a frozenset is immutable and\n'
+          '   *hashable*, it can be used again as an element of another set, '
+          'or\n'
+          '   as a dictionary key.\n'
+          '\n'
           '\n'
           'Mappings\n'
-          '   These represent finite sets of objects indexed by arbitrary '
-          'index\n'
-          '   sets. The subscript notation "a[k]" selects the item indexed by '
+          '========\n'
+          '\n'
+          'These represent finite sets of objects indexed by arbitrary index\n'
+          'sets. The subscript notation "a[k]" selects the item indexed by '
           '"k"\n'
-          '   from the mapping "a"; this can be used in expressions and as '
-          'the\n'
-          '   target of assignments or "del" statements. The built-in '
-          'function\n'
-          '   "len()" returns the number of items in a mapping.\n'
+          'from the mapping "a"; this can be used in expressions and as the\n'
+          'target of assignments or "del" statements. The built-in function\n'
+          '"len()" returns the number of items in a mapping.\n'
           '\n'
-          '   There is currently a single intrinsic mapping type:\n'
+          'There is currently a single intrinsic mapping type:\n'
           '\n'
-          '   Dictionaries\n'
-          '      These represent finite sets of objects indexed by nearly\n'
-          '      arbitrary values.  The only types of values not acceptable '
-          'as\n'
-          '      keys are values containing lists or dictionaries or other\n'
-          '      mutable types that are compared by value rather than by '
-          'object\n'
-          '      identity, the reason being that the efficient implementation '
-          'of\n'
-          '      dictionaries requires a key’s hash value to remain constant.\n'
-          '      Numeric types used for keys obey the normal rules for '
-          'numeric\n'
-          '      comparison: if two numbers compare equal (e.g., "1" and '
-          '"1.0")\n'
-          '      then they can be used interchangeably to index the same\n'
-          '      dictionary entry.\n'
-          '\n'
-          '      Dictionaries preserve insertion order, meaning that keys will '
-          'be\n'
-          '      produced in the same order they were added sequentially over '
-          'the\n'
-          '      dictionary. Replacing an existing key does not change the '
-          'order,\n'
-          '      however removing a key and re-inserting it will add it to '
+          '\n'
+          'Dictionaries\n'
+          '------------\n'
+          '\n'
+          'These represent finite sets of objects indexed by nearly arbitrary\n'
+          'values.  The only types of values not acceptable as keys are '
+          'values\n'
+          'containing lists or dictionaries or other mutable types that are\n'
+          'compared by value rather than by object identity, the reason being\n'
+          'that the efficient implementation of dictionaries requires a key’s\n'
+          'hash value to remain constant. Numeric types used for keys obey '
           'the\n'
-          '      end instead of keeping its old place.\n'
+          'normal rules for numeric comparison: if two numbers compare equal\n'
+          '(e.g., "1" and "1.0") then they can be used interchangeably to '
+          'index\n'
+          'the same dictionary entry.\n'
+          '\n'
+          'Dictionaries preserve insertion order, meaning that keys will be\n'
+          'produced in the same order they were added sequentially over the\n'
+          'dictionary. Replacing an existing key does not change the order,\n'
+          'however removing a key and re-inserting it will add it to the end\n'
+          'instead of keeping its old place.\n'
           '\n'
-          '      Dictionaries are mutable; they can be created by the "{...}"\n'
-          '      notation (see section Dictionary displays).\n'
+          'Dictionaries are mutable; they can be created by the "{...}" '
+          'notation\n'
+          '(see section Dictionary displays).\n'
           '\n'
-          '      The extension modules "dbm.ndbm" and "dbm.gnu" provide\n'
-          '      additional examples of mapping types, as does the '
-          '"collections"\n'
-          '      module.\n'
+          'The extension modules "dbm.ndbm" and "dbm.gnu" provide additional\n'
+          'examples of mapping types, as does the "collections" module.\n'
+          '\n'
+          'Changed in version 3.7: Dictionaries did not preserve insertion '
+          'order\n'
+          'in versions of Python before 3.6. In CPython 3.6, insertion order '
+          'was\n'
+          'preserved, but it was considered an implementation detail at that '
+          'time\n'
+          'rather than a language guarantee.\n'
           '\n'
-          '      Changed in version 3.7: Dictionaries did not preserve '
-          'insertion\n'
-          '      order in versions of Python before 3.6. In CPython 3.6,\n'
-          '      insertion order was preserved, but it was considered an\n'
-          '      implementation detail at that time rather than a language\n'
-          '      guarantee.\n'
           '\n'
           'Callable types\n'
-          '   These are the types to which the function call operation (see\n'
-          '   section Calls) can be applied:\n'
+          '==============\n'
+          '\n'
+          'These are the types to which the function call operation (see '
+          'section\n'
+          'Calls) can be applied:\n'
           '\n'
-          '   User-defined functions\n'
-          '      A user-defined function object is created by a function\n'
-          '      definition (see section Function definitions).  It should be\n'
-          '      called with an argument list containing the same number of '
-          'items\n'
-          '      as the function’s formal parameter list.\n'
           '\n'
-          '      Special attributes:\n'
+          'User-defined functions\n'
+          '----------------------\n'
+          '\n'
+          'A user-defined function object is created by a function definition\n'
+          '(see section Function definitions).  It should be called with an\n'
+          'argument list containing the same number of items as the '
+          'function’s\n'
+          'formal parameter list.\n'
+          '\n'
+          'Special attributes:\n'
           '\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | Attribute                 | Meaning                         '
+          '| Attribute                 | Meaning                         '
           '|             |\n'
-          '      '
           '|===========================|=================================|=============|\n'
-          '      | "__doc__"                 | The function’s documentation    '
-          '| Writable    |\n'
-          '      |                           | string, or "None" if            '
+          '| "__doc__"                 | The function’s documentation    | '
+          'Writable    |\n'
+          '|                           | string, or "None" if            '
           '|             |\n'
-          '      |                           | unavailable; not inherited by   '
+          '|                           | unavailable; not inherited by   '
           '|             |\n'
-          '      |                           | subclasses.                     '
+          '|                           | subclasses.                     '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__name__"                | The function’s name.            '
-          '| Writable    |\n'
-          '      '
+          '| "__name__"                | The function’s name.            | '
+          'Writable    |\n'
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__qualname__"            | The function’s *qualified       '
-          '| Writable    |\n'
-          '      |                           | name*.  New in version 3.3.     '
+          '| "__qualname__"            | The function’s *qualified       | '
+          'Writable    |\n'
+          '|                           | name*.  New in version 3.3.     '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__module__"              | The name of the module the      '
-          '| Writable    |\n'
-          '      |                           | function was defined in, or     '
+          '| "__module__"              | The name of the module the      | '
+          'Writable    |\n'
+          '|                           | function was defined in, or     '
           '|             |\n'
-          '      |                           | "None" if unavailable.          '
+          '|                           | "None" if unavailable.          '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__defaults__"            | A tuple containing default      '
-          '| Writable    |\n'
-          '      |                           | argument values for those       '
+          '| "__defaults__"            | A tuple containing default      | '
+          'Writable    |\n'
+          '|                           | argument values for those       '
           '|             |\n'
-          '      |                           | arguments that have defaults,   '
+          '|                           | arguments that have defaults,   '
           '|             |\n'
-          '      |                           | or "None" if no arguments have  '
+          '|                           | or "None" if no arguments have  '
           '|             |\n'
-          '      |                           | a default value.                '
+          '|                           | a default value.                '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__code__"                | The code object representing    '
-          '| Writable    |\n'
-          '      |                           | the compiled function body.     '
+          '| "__code__"                | The code object representing    | '
+          'Writable    |\n'
+          '|                           | the compiled function body.     '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__globals__"             | A reference to the dictionary   '
-          '| Read-only   |\n'
-          '      |                           | that holds the function’s       '
+          '| "__globals__"             | A reference to the dictionary   | '
+          'Read-only   |\n'
+          '|                           | that holds the function’s       '
           '|             |\n'
-          '      |                           | global variables — the global   '
+          '|                           | global variables — the global   '
           '|             |\n'
-          '      |                           | namespace of the module in      '
+          '|                           | namespace of the module in      '
           '|             |\n'
-          '      |                           | which the function was defined. '
+          '|                           | which the function was defined. '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__dict__"                | The namespace supporting        '
-          '| Writable    |\n'
-          '      |                           | arbitrary function attributes.  '
+          '| "__dict__"                | The namespace supporting        | '
+          'Writable    |\n'
+          '|                           | arbitrary function attributes.  '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__closure__"             | "None" or a tuple of cells that '
-          '| Read-only   |\n'
-          '      |                           | contain bindings for the        '
+          '| "__closure__"             | "None" or a tuple of cells that | '
+          'Read-only   |\n'
+          '|                           | contain bindings for the        '
           '|             |\n'
-          '      |                           | function’s free variables. See  '
+          '|                           | function’s free variables. See  '
           '|             |\n'
-          '      |                           | below for information on the    '
+          '|                           | below for information on the    '
           '|             |\n'
-          '      |                           | "cell_contents" attribute.      '
+          '|                           | "cell_contents" attribute.      '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__annotations__"         | A dict containing annotations   '
-          '| Writable    |\n'
-          '      |                           | of parameters.  The keys of the '
+          '| "__annotations__"         | A dict containing annotations   | '
+          'Writable    |\n'
+          '|                           | of parameters.  The keys of the '
+          '|             |\n'
+          '|                           | dict are the parameter names,   '
           '|             |\n'
-          '      |                           | dict are the parameter names,   '
+          '|                           | and "\'return\'" for the return   '
           '|             |\n'
-          '      |                           | and "\'return\'" for the '
-          'return   |             |\n'
-          '      |                           | annotation, if provided.  For   '
+          '|                           | annotation, if provided.  For   '
           '|             |\n'
-          '      |                           | more information on working     '
+          '|                           | more information on working     '
           '|             |\n'
-          '      |                           | with this attribute, see        '
+          '|                           | with this attribute, see        '
           '|             |\n'
-          '      |                           | Annotations Best Practices.     '
+          '|                           | Annotations Best Practices.     '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
-          '      | "__kwdefaults__"          | A dict containing defaults for  '
-          '| Writable    |\n'
-          '      |                           | keyword-only parameters.        '
+          '| "__kwdefaults__"          | A dict containing defaults for  | '
+          'Writable    |\n'
+          '|                           | keyword-only parameters.        '
+          '|             |\n'
+          '+---------------------------+---------------------------------+-------------+\n'
+          '| "__type_params__"         | A tuple containing the type     | '
+          'Writable    |\n'
+          '|                           | parameters of a generic         '
+          '|             |\n'
+          '|                           | function.                       '
           '|             |\n'
-          '      '
           '+---------------------------+---------------------------------+-------------+\n'
           '\n'
-          '      Most of the attributes labelled “Writable� check the type of '
-          'the\n'
-          '      assigned value.\n'
+          'Most of the attributes labelled “Writable� check the type of the\n'
+          'assigned value.\n'
           '\n'
-          '      Function objects also support getting and setting arbitrary\n'
-          '      attributes, which can be used, for example, to attach '
-          'metadata\n'
-          '      to functions.  Regular attribute dot-notation is used to get '
-          'and\n'
-          '      set such attributes. *Note that the current implementation '
-          'only\n'
-          '      supports function attributes on user-defined functions. '
-          'Function\n'
-          '      attributes on built-in functions may be supported in the\n'
-          '      future.*\n'
-          '\n'
-          '      A cell object has the attribute "cell_contents". This can be\n'
-          '      used to get the value of the cell, as well as set the value.\n'
-          '\n'
-          '      Additional information about a function’s definition can be\n'
-          '      retrieved from its code object; see the description of '
-          'internal\n'
-          '      types below. The "cell" type can be accessed in the "types"\n'
-          '      module.\n'
-          '\n'
-          '   Instance methods\n'
-          '      An instance method object combines a class, a class instance '
-          'and\n'
-          '      any callable object (normally a user-defined function).\n'
-          '\n'
-          '      Special read-only attributes: "__self__" is the class '
-          'instance\n'
-          '      object, "__func__" is the function object; "__doc__" is the\n'
-          '      method’s documentation (same as "__func__.__doc__"); '
-          '"__name__"\n'
-          '      is the method name (same as "__func__.__name__"); '
-          '"__module__"\n'
-          '      is the name of the module the method was defined in, or '
-          '"None"\n'
-          '      if unavailable.\n'
+          'Function objects also support getting and setting arbitrary\n'
+          'attributes, which can be used, for example, to attach metadata to\n'
+          'functions.  Regular attribute dot-notation is used to get and set '
+          'such\n'
+          'attributes. *Note that the current implementation only supports\n'
+          'function attributes on user-defined functions. Function attributes '
+          'on\n'
+          'built-in functions may be supported in the future.*\n'
           '\n'
-          '      Methods also support accessing (but not setting) the '
-          'arbitrary\n'
-          '      function attributes on the underlying function object.\n'
+          'A cell object has the attribute "cell_contents". This can be used '
+          'to\n'
+          'get the value of the cell, as well as set the value.\n'
           '\n'
-          '      User-defined method objects may be created when getting an\n'
-          '      attribute of a class (perhaps via an instance of that class), '
-          'if\n'
-          '      that attribute is a user-defined function object or a class\n'
-          '      method object.\n'
-          '\n'
-          '      When an instance method object is created by retrieving a '
-          'user-\n'
-          '      defined function object from a class via one of its '
-          'instances,\n'
-          '      its "__self__" attribute is the instance, and the method '
-          'object\n'
-          '      is said to be bound.  The new method’s "__func__" attribute '
-          'is\n'
-          '      the original function object.\n'
+          'Additional information about a function’s definition can be '
+          'retrieved\n'
+          'from its code object; see the description of internal types below. '
+          'The\n'
+          '"cell" type can be accessed in the "types" module.\n'
           '\n'
-          '      When an instance method object is created by retrieving a '
-          'class\n'
-          '      method object from a class or instance, its "__self__" '
-          'attribute\n'
-          '      is the class itself, and its "__func__" attribute is the\n'
-          '      function object underlying the class method.\n'
           '\n'
-          '      When an instance method object is called, the underlying\n'
-          '      function ("__func__") is called, inserting the class '
-          'instance\n'
-          '      ("__self__") in front of the argument list.  For instance, '
-          'when\n'
-          '      "C" is a class which contains a definition for a function '
-          '"f()",\n'
-          '      and "x" is an instance of "C", calling "x.f(1)" is equivalent '
-          'to\n'
-          '      calling "C.f(x, 1)".\n'
+          'Instance methods\n'
+          '----------------\n'
           '\n'
-          '      When an instance method object is derived from a class '
+          'An instance method object combines a class, a class instance and '
+          'any\n'
+          'callable object (normally a user-defined function).\n'
+          '\n'
+          'Special read-only attributes: "__self__" is the class instance '
+          'object,\n'
+          '"__func__" is the function object; "__doc__" is the method’s\n'
+          'documentation (same as "__func__.__doc__"); "__name__" is the '
           'method\n'
-          '      object, the “class instance� stored in "__self__" will '
-          'actually\n'
-          '      be the class itself, so that calling either "x.f(1)" or '
-          '"C.f(1)"\n'
-          '      is equivalent to calling "f(C,1)" where "f" is the '
-          'underlying\n'
-          '      function.\n'
-          '\n'
-          '      Note that the transformation from function object to '
-          'instance\n'
-          '      method object happens each time the attribute is retrieved '
-          'from\n'
-          '      the instance.  In some cases, a fruitful optimization is to\n'
-          '      assign the attribute to a local variable and call that local\n'
-          '      variable. Also notice that this transformation only happens '
-          'for\n'
-          '      user-defined functions; other callable objects (and all non-\n'
-          '      callable objects) are retrieved without transformation.  It '
-          'is\n'
-          '      also important to note that user-defined functions which are\n'
-          '      attributes of a class instance are not converted to bound\n'
-          '      methods; this *only* happens when the function is an '
+          'name (same as "__func__.__name__"); "__module__" is the name of '
+          'the\n'
+          'module the method was defined in, or "None" if unavailable.\n'
+          '\n'
+          'Methods also support accessing (but not setting) the arbitrary\n'
+          'function attributes on the underlying function object.\n'
+          '\n'
+          'User-defined method objects may be created when getting an '
           'attribute\n'
-          '      of the class.\n'
+          'of a class (perhaps via an instance of that class), if that '
+          'attribute\n'
+          'is a user-defined function object or a class method object.\n'
           '\n'
-          '   Generator functions\n'
-          '      A function or method which uses the "yield" statement (see\n'
-          '      section The yield statement) is called a *generator '
-          'function*.\n'
-          '      Such a function, when called, always returns an *iterator*\n'
-          '      object which can be used to execute the body of the '
-          'function:\n'
-          '      calling the iterator’s "iterator.__next__()" method will '
-          'cause\n'
-          '      the function to execute until it provides a value using the\n'
-          '      "yield" statement.  When the function executes a "return"\n'
-          '      statement or falls off the end, a "StopIteration" exception '
-          'is\n'
-          '      raised and the iterator will have reached the end of the set '
+          'When an instance method object is created by retrieving a '
+          'user-defined\n'
+          'function object from a class via one of its instances, its '
+          '"__self__"\n'
+          'attribute is the instance, and the method object is said to be '
+          'bound.\n'
+          'The new method’s "__func__" attribute is the original function '
+          'object.\n'
+          '\n'
+          'When an instance method object is created by retrieving a class '
+          'method\n'
+          'object from a class or instance, its "__self__" attribute is the '
+          'class\n'
+          'itself, and its "__func__" attribute is the function object '
+          'underlying\n'
+          'the class method.\n'
+          '\n'
+          'When an instance method object is called, the underlying function\n'
+          '("__func__") is called, inserting the class instance ("__self__") '
+          'in\n'
+          'front of the argument list.  For instance, when "C" is a class '
+          'which\n'
+          'contains a definition for a function "f()", and "x" is an instance '
           'of\n'
-          '      values to be returned.\n'
-          '\n'
-          '   Coroutine functions\n'
-          '      A function or method which is defined using "async def" is\n'
-          '      called a *coroutine function*.  Such a function, when '
-          'called,\n'
-          '      returns a *coroutine* object.  It may contain "await"\n'
-          '      expressions, as well as "async with" and "async for" '
-          'statements.\n'
-          '      See also the Coroutine Objects section.\n'
-          '\n'
-          '   Asynchronous generator functions\n'
-          '      A function or method which is defined using "async def" and\n'
-          '      which uses the "yield" statement is called a *asynchronous\n'
-          '      generator function*.  Such a function, when called, returns '
-          'an\n'
-          '      *asynchronous iterator* object which can be used in an '
-          '"async\n'
-          '      for" statement to execute the body of the function.\n'
+          '"C", calling "x.f(1)" is equivalent to calling "C.f(x, 1)".\n'
+          '\n'
+          'When an instance method object is derived from a class method '
+          'object,\n'
+          'the “class instance� stored in "__self__" will actually be the '
+          'class\n'
+          'itself, so that calling either "x.f(1)" or "C.f(1)" is equivalent '
+          'to\n'
+          'calling "f(C,1)" where "f" is the underlying function.\n'
           '\n'
-          '      Calling the asynchronous iterator’s "aiterator.__anext__" '
+          'Note that the transformation from function object to instance '
           'method\n'
-          '      will return an *awaitable* which when awaited will execute '
+          'object happens each time the attribute is retrieved from the '
+          'instance.\n'
+          'In some cases, a fruitful optimization is to assign the attribute '
+          'to a\n'
+          'local variable and call that local variable. Also notice that this\n'
+          'transformation only happens for user-defined functions; other '
+          'callable\n'
+          'objects (and all non-callable objects) are retrieved without\n'
+          'transformation.  It is also important to note that user-defined\n'
+          'functions which are attributes of a class instance are not '
+          'converted\n'
+          'to bound methods; this *only* happens when the function is an\n'
+          'attribute of the class.\n'
+          '\n'
+          '\n'
+          'Generator functions\n'
+          '-------------------\n'
+          '\n'
+          'A function or method which uses the "yield" statement (see section '
+          'The\n'
+          'yield statement) is called a *generator function*.  Such a '
+          'function,\n'
+          'when called, always returns an *iterator* object which can be used '
+          'to\n'
+          'execute the body of the function:  calling the iterator’s\n'
+          '"iterator.__next__()" method will cause the function to execute '
           'until\n'
-          '      it provides a value using the "yield" expression.  When the\n'
-          '      function executes an empty "return" statement or falls off '
+          'it provides a value using the "yield" statement.  When the '
+          'function\n'
+          'executes a "return" statement or falls off the end, a '
+          '"StopIteration"\n'
+          'exception is raised and the iterator will have reached the end of '
           'the\n'
-          '      end, a "StopAsyncIteration" exception is raised and the\n'
-          '      asynchronous iterator will have reached the end of the set '
-          'of\n'
-          '      values to be yielded.\n'
+          'set of values to be returned.\n'
           '\n'
-          '   Built-in functions\n'
-          '      A built-in function object is a wrapper around a C function.\n'
-          '      Examples of built-in functions are "len()" and "math.sin()"\n'
-          '      ("math" is a standard built-in module). The number and type '
-          'of\n'
-          '      the arguments are determined by the C function. Special '
-          'read-\n'
-          '      only attributes: "__doc__" is the function’s documentation\n'
-          '      string, or "None" if unavailable; "__name__" is the '
-          'function’s\n'
-          '      name; "__self__" is set to "None" (but see the next item);\n'
-          '      "__module__" is the name of the module the function was '
-          'defined\n'
-          '      in or "None" if unavailable.\n'
           '\n'
-          '   Built-in methods\n'
-          '      This is really a different disguise of a built-in function, '
-          'this\n'
-          '      time containing an object passed to the C function as an\n'
-          '      implicit extra argument.  An example of a built-in method is\n'
-          '      "alist.append()", assuming *alist* is a list object. In this\n'
-          '      case, the special read-only attribute "__self__" is set to '
+          'Coroutine functions\n'
+          '-------------------\n'
+          '\n'
+          'A function or method which is defined using "async def" is called '
+          'a\n'
+          '*coroutine function*.  Such a function, when called, returns a\n'
+          '*coroutine* object.  It may contain "await" expressions, as well '
+          'as\n'
+          '"async with" and "async for" statements. See also the Coroutine\n'
+          'Objects section.\n'
+          '\n'
+          '\n'
+          'Asynchronous generator functions\n'
+          '--------------------------------\n'
+          '\n'
+          'A function or method which is defined using "async def" and which '
+          'uses\n'
+          'the "yield" statement is called a *asynchronous generator '
+          'function*.\n'
+          'Such a function, when called, returns an *asynchronous iterator*\n'
+          'object which can be used in an "async for" statement to execute '
           'the\n'
-          '      object denoted by *alist*.\n'
+          'body of the function.\n'
+          '\n'
+          'Calling the asynchronous iterator’s "aiterator.__anext__" method '
+          'will\n'
+          'return an *awaitable* which when awaited will execute until it\n'
+          'provides a value using the "yield" expression.  When the function\n'
+          'executes an empty "return" statement or falls off the end, a\n'
+          '"StopAsyncIteration" exception is raised and the asynchronous '
+          'iterator\n'
+          'will have reached the end of the set of values to be yielded.\n'
+          '\n'
+          '\n'
+          'Built-in functions\n'
+          '------------------\n'
+          '\n'
+          'A built-in function object is a wrapper around a C function.  '
+          'Examples\n'
+          'of built-in functions are "len()" and "math.sin()" ("math" is a\n'
+          'standard built-in module). The number and type of the arguments '
+          'are\n'
+          'determined by the C function. Special read-only attributes: '
+          '"__doc__"\n'
+          'is the function’s documentation string, or "None" if unavailable;\n'
+          '"__name__" is the function’s name; "__self__" is set to "None" '
+          '(but\n'
+          'see the next item); "__module__" is the name of the module the\n'
+          'function was defined in or "None" if unavailable.\n'
+          '\n'
+          '\n'
+          'Built-in methods\n'
+          '----------------\n'
+          '\n'
+          'This is really a different disguise of a built-in function, this '
+          'time\n'
+          'containing an object passed to the C function as an implicit extra\n'
+          'argument.  An example of a built-in method is "alist.append()",\n'
+          'assuming *alist* is a list object. In this case, the special '
+          'read-only\n'
+          'attribute "__self__" is set to the object denoted by *alist*.\n'
           '\n'
-          '   Classes\n'
-          '      Classes are callable.  These objects normally act as '
-          'factories\n'
-          '      for new instances of themselves, but variations are possible '
-          'for\n'
-          '      class types that override "__new__()".  The arguments of the\n'
-          '      call are passed to "__new__()" and, in the typical case, to\n'
-          '      "__init__()" to initialize the new instance.\n'
           '\n'
-          '   Class Instances\n'
-          '      Instances of arbitrary classes can be made callable by '
-          'defining\n'
-          '      a "__call__()" method in their class.\n'
+          'Classes\n'
+          '-------\n'
+          '\n'
+          'Classes are callable.  These objects normally act as factories for '
+          'new\n'
+          'instances of themselves, but variations are possible for class '
+          'types\n'
+          'that override "__new__()".  The arguments of the call are passed '
+          'to\n'
+          '"__new__()" and, in the typical case, to "__init__()" to '
+          'initialize\n'
+          'the new instance.\n'
+          '\n'
+          '\n'
+          'Class Instances\n'
+          '---------------\n'
+          '\n'
+          'Instances of arbitrary classes can be made callable by defining a\n'
+          '"__call__()" method in their class.\n'
+          '\n'
           '\n'
           'Modules\n'
-          '   Modules are a basic organizational unit of Python code, and are\n'
-          '   created by the import system as invoked either by the "import"\n'
-          '   statement, or by calling functions such as\n'
-          '   "importlib.import_module()" and built-in "__import__()".  A '
-          'module\n'
-          '   object has a namespace implemented by a dictionary object (this '
-          'is\n'
-          '   the dictionary referenced by the "__globals__" attribute of\n'
-          '   functions defined in the module).  Attribute references are\n'
-          '   translated to lookups in this dictionary, e.g., "m.x" is '
-          'equivalent\n'
-          '   to "m.__dict__["x"]". A module object does not contain the code\n'
-          '   object used to initialize the module (since it isn’t needed '
-          'once\n'
-          '   the initialization is done).\n'
+          '=======\n'
+          '\n'
+          'Modules are a basic organizational unit of Python code, and are\n'
+          'created by the import system as invoked either by the "import"\n'
+          'statement, or by calling functions such as '
+          '"importlib.import_module()"\n'
+          'and built-in "__import__()".  A module object has a namespace\n'
+          'implemented by a dictionary object (this is the dictionary '
+          'referenced\n'
+          'by the "__globals__" attribute of functions defined in the '
+          'module).\n'
+          'Attribute references are translated to lookups in this dictionary,\n'
+          'e.g., "m.x" is equivalent to "m.__dict__["x"]". A module object '
+          'does\n'
+          'not contain the code object used to initialize the module (since '
+          'it\n'
+          'isn’t needed once the initialization is done).\n'
+          '\n'
+          'Attribute assignment updates the module’s namespace dictionary, '
+          'e.g.,\n'
+          '"m.x = 1" is equivalent to "m.__dict__["x"] = 1".\n'
           '\n'
-          '   Attribute assignment updates the module’s namespace dictionary,\n'
-          '   e.g., "m.x = 1" is equivalent to "m.__dict__["x"] = 1".\n'
+          'Predefined (writable) attributes:\n'
           '\n'
-          '   Predefined (writable) attributes:\n'
+          '   "__name__"\n'
+          '      The module’s name.\n'
           '\n'
-          '      "__name__"\n'
-          '         The module’s name.\n'
+          '   "__doc__"\n'
+          '      The module’s documentation string, or "None" if unavailable.\n'
           '\n'
-          '      "__doc__"\n'
-          '         The module’s documentation string, or "None" if '
-          'unavailable.\n'
+          '   "__file__"\n'
+          '      The pathname of the file from which the module was loaded, if '
+          'it\n'
+          '      was loaded from a file. The "__file__" attribute may be '
+          'missing\n'
+          '      for certain types of modules, such as C modules that are\n'
+          '      statically linked into the interpreter.  For extension '
+          'modules\n'
+          '      loaded dynamically from a shared library, it’s the pathname '
+          'of\n'
+          '      the shared library file.\n'
           '\n'
-          '      "__file__"\n'
-          '         The pathname of the file from which the module was loaded, '
-          'if\n'
-          '         it was loaded from a file. The "__file__" attribute may '
-          'be\n'
-          '         missing for certain types of modules, such as C modules '
-          'that\n'
-          '         are statically linked into the interpreter.  For '
-          'extension\n'
-          '         modules loaded dynamically from a shared library, it’s '
-          'the\n'
-          '         pathname of the shared library file.\n'
-          '\n'
-          '      "__annotations__"\n'
-          '         A dictionary containing *variable annotations* collected\n'
-          '         during module body execution.  For best practices on '
-          'working\n'
-          '         with "__annotations__", please see Annotations Best\n'
-          '         Practices.\n'
-          '\n'
-          '   Special read-only attribute: "__dict__" is the module’s '
-          'namespace\n'
-          '   as a dictionary object.\n'
-          '\n'
-          '   **CPython implementation detail:** Because of the way CPython\n'
-          '   clears module dictionaries, the module dictionary will be '
-          'cleared\n'
-          '   when the module falls out of scope even if the dictionary still '
-          'has\n'
-          '   live references.  To avoid this, copy the dictionary or keep '
+          '   "__annotations__"\n'
+          '      A dictionary containing *variable annotations* collected '
+          'during\n'
+          '      module body execution.  For best practices on working with\n'
+          '      "__annotations__", please see Annotations Best Practices.\n'
+          '\n'
+          'Special read-only attribute: "__dict__" is the module’s namespace '
+          'as a\n'
+          'dictionary object.\n'
+          '\n'
+          '**CPython implementation detail:** Because of the way CPython '
+          'clears\n'
+          'module dictionaries, the module dictionary will be cleared when '
           'the\n'
-          '   module around while using its dictionary directly.\n'
+          'module falls out of scope even if the dictionary still has live\n'
+          'references.  To avoid this, copy the dictionary or keep the module\n'
+          'around while using its dictionary directly.\n'
+          '\n'
           '\n'
           'Custom classes\n'
-          '   Custom class types are typically created by class definitions '
-          '(see\n'
-          '   section Class definitions).  A class has a namespace implemented '
-          'by\n'
-          '   a dictionary object. Class attribute references are translated '
-          'to\n'
-          '   lookups in this dictionary, e.g., "C.x" is translated to\n'
-          '   "C.__dict__["x"]" (although there are a number of hooks which '
+          '==============\n'
+          '\n'
+          'Custom class types are typically created by class definitions (see\n'
+          'section Class definitions).  A class has a namespace implemented by '
+          'a\n'
+          'dictionary object. Class attribute references are translated to\n'
+          'lookups in this dictionary, e.g., "C.x" is translated to\n'
+          '"C.__dict__["x"]" (although there are a number of hooks which '
           'allow\n'
-          '   for other means of locating attributes). When the attribute name '
+          'for other means of locating attributes). When the attribute name '
           'is\n'
-          '   not found there, the attribute search continues in the base\n'
-          '   classes. This search of the base classes uses the C3 method\n'
-          '   resolution order which behaves correctly even in the presence '
-          'of\n'
-          '   ‘diamond’ inheritance structures where there are multiple\n'
-          '   inheritance paths leading back to a common ancestor. Additional\n'
-          '   details on the C3 MRO used by Python can be found in the\n'
-          '   documentation accompanying the 2.3 release at\n'
-          '   https://www.python.org/download/releases/2.3/mro/.\n'
-          '\n'
-          '   When a class attribute reference (for class "C", say) would '
-          'yield a\n'
-          '   class method object, it is transformed into an instance method\n'
-          '   object whose "__self__" attribute is "C".  When it would yield '
+          'not found there, the attribute search continues in the base '
+          'classes.\n'
+          'This search of the base classes uses the C3 method resolution '
+          'order\n'
+          'which behaves correctly even in the presence of ‘diamond’ '
+          'inheritance\n'
+          'structures where there are multiple inheritance paths leading back '
+          'to\n'
+          'a common ancestor. Additional details on the C3 MRO used by Python '
+          'can\n'
+          'be found in the documentation accompanying the 2.3 release at\n'
+          'https://www.python.org/download/releases/2.3/mro/.\n'
+          '\n'
+          'When a class attribute reference (for class "C", say) would yield '
           'a\n'
-          '   static method object, it is transformed into the object wrapped '
-          'by\n'
-          '   the static method object. See section Implementing Descriptors '
-          'for\n'
-          '   another way in which attributes retrieved from a class may '
-          'differ\n'
-          '   from those actually contained in its "__dict__".\n'
+          'class method object, it is transformed into an instance method '
+          'object\n'
+          'whose "__self__" attribute is "C".  When it would yield a static\n'
+          'method object, it is transformed into the object wrapped by the '
+          'static\n'
+          'method object. See section Implementing Descriptors for another way '
+          'in\n'
+          'which attributes retrieved from a class may differ from those '
+          'actually\n'
+          'contained in its "__dict__".\n'
+          '\n'
+          'Class attribute assignments update the class’s dictionary, never '
+          'the\n'
+          'dictionary of a base class.\n'
           '\n'
-          '   Class attribute assignments update the class’s dictionary, '
-          'never\n'
-          '   the dictionary of a base class.\n'
+          'A class object can be called (see above) to yield a class instance\n'
+          '(see below).\n'
           '\n'
-          '   A class object can be called (see above) to yield a class '
-          'instance\n'
-          '   (see below).\n'
+          'Special attributes:\n'
           '\n'
-          '   Special attributes:\n'
+          '   "__name__"\n'
+          '      The class name.\n'
           '\n'
-          '      "__name__"\n'
-          '         The class name.\n'
+          '   "__module__"\n'
+          '      The name of the module in which the class was defined.\n'
           '\n'
-          '      "__module__"\n'
-          '         The name of the module in which the class was defined.\n'
+          '   "__dict__"\n'
+          '      The dictionary containing the class’s namespace.\n'
           '\n'
-          '      "__dict__"\n'
-          '         The dictionary containing the class’s namespace.\n'
+          '   "__bases__"\n'
+          '      A tuple containing the base classes, in the order of their\n'
+          '      occurrence in the base class list.\n'
           '\n'
-          '      "__bases__"\n'
-          '         A tuple containing the base classes, in the order of '
-          'their\n'
-          '         occurrence in the base class list.\n'
+          '   "__doc__"\n'
+          '      The class’s documentation string, or "None" if undefined.\n'
           '\n'
-          '      "__doc__"\n'
-          '         The class’s documentation string, or "None" if undefined.\n'
+          '   "__annotations__"\n'
+          '      A dictionary containing *variable annotations* collected '
+          'during\n'
+          '      class body execution.  For best practices on working with\n'
+          '      "__annotations__", please see Annotations Best Practices.\n'
+          '\n'
+          '   "__type_params__"\n'
+          '      A tuple containing the type parameters of a generic class.\n'
           '\n'
-          '      "__annotations__"\n'
-          '         A dictionary containing *variable annotations* collected\n'
-          '         during class body execution.  For best practices on '
-          'working\n'
-          '         with "__annotations__", please see Annotations Best\n'
-          '         Practices.\n'
           '\n'
           'Class instances\n'
-          '   A class instance is created by calling a class object (see '
-          'above).\n'
-          '   A class instance has a namespace implemented as a dictionary '
-          'which\n'
-          '   is the first place in which attribute references are searched.\n'
-          '   When an attribute is not found there, and the instance’s class '
-          'has\n'
-          '   an attribute by that name, the search continues with the class\n'
-          '   attributes.  If a class attribute is found that is a '
-          'user-defined\n'
-          '   function object, it is transformed into an instance method '
-          'object\n'
-          '   whose "__self__" attribute is the instance.  Static method and\n'
-          '   class method objects are also transformed; see above under\n'
-          '   “Classes�.  See section Implementing Descriptors for another way '
-          'in\n'
-          '   which attributes of a class retrieved via its instances may '
-          'differ\n'
-          '   from the objects actually stored in the class’s "__dict__".  If '
-          'no\n'
-          '   class attribute is found, and the object’s class has a\n'
-          '   "__getattr__()" method, that is called to satisfy the lookup.\n'
+          '===============\n'
           '\n'
-          '   Attribute assignments and deletions update the instance’s\n'
-          '   dictionary, never a class’s dictionary.  If the class has a\n'
-          '   "__setattr__()" or "__delattr__()" method, this is called '
-          'instead\n'
-          '   of updating the instance dictionary directly.\n'
+          'A class instance is created by calling a class object (see above).  '
+          'A\n'
+          'class instance has a namespace implemented as a dictionary which '
+          'is\n'
+          'the first place in which attribute references are searched.  When '
+          'an\n'
+          'attribute is not found there, and the instance’s class has an\n'
+          'attribute by that name, the search continues with the class\n'
+          'attributes.  If a class attribute is found that is a user-defined\n'
+          'function object, it is transformed into an instance method object\n'
+          'whose "__self__" attribute is the instance.  Static method and '
+          'class\n'
+          'method objects are also transformed; see above under “Classes�.  '
+          'See\n'
+          'section Implementing Descriptors for another way in which '
+          'attributes\n'
+          'of a class retrieved via its instances may differ from the objects\n'
+          'actually stored in the class’s "__dict__".  If no class attribute '
+          'is\n'
+          'found, and the object’s class has a "__getattr__()" method, that '
+          'is\n'
+          'called to satisfy the lookup.\n'
+          '\n'
+          'Attribute assignments and deletions update the instance’s '
+          'dictionary,\n'
+          'never a class’s dictionary.  If the class has a "__setattr__()" or\n'
+          '"__delattr__()" method, this is called instead of updating the\n'
+          'instance dictionary directly.\n'
           '\n'
-          '   Class instances can pretend to be numbers, sequences, or '
-          'mappings\n'
-          '   if they have methods with certain special names.  See section\n'
-          '   Special method names.\n'
+          'Class instances can pretend to be numbers, sequences, or mappings '
+          'if\n'
+          'they have methods with certain special names.  See section Special\n'
+          'method names.\n'
+          '\n'
+          'Special attributes: "__dict__" is the attribute dictionary;\n'
+          '"__class__" is the instance’s class.\n'
           '\n'
-          '   Special attributes: "__dict__" is the attribute dictionary;\n'
-          '   "__class__" is the instance’s class.\n'
           '\n'
           'I/O objects (also known as file objects)\n'
-          '   A *file object* represents an open file.  Various shortcuts are\n'
-          '   available to create file objects: the "open()" built-in '
-          'function,\n'
-          '   and also "os.popen()", "os.fdopen()", and the "makefile()" '
-          'method\n'
-          '   of socket objects (and perhaps by other functions or methods\n'
-          '   provided by extension modules).\n'
+          '========================================\n'
+          '\n'
+          'A *file object* represents an open file.  Various shortcuts are\n'
+          'available to create file objects: the "open()" built-in function, '
+          'and\n'
+          'also "os.popen()", "os.fdopen()", and the "makefile()" method of\n'
+          'socket objects (and perhaps by other functions or methods provided '
+          'by\n'
+          'extension modules).\n'
+          '\n'
+          'The objects "sys.stdin", "sys.stdout" and "sys.stderr" are '
+          'initialized\n'
+          'to file objects corresponding to the interpreter’s standard input,\n'
+          'output and error streams; they are all open in text mode and '
+          'therefore\n'
+          'follow the interface defined by the "io.TextIOBase" abstract '
+          'class.\n'
           '\n'
-          '   The objects "sys.stdin", "sys.stdout" and "sys.stderr" are\n'
-          '   initialized to file objects corresponding to the interpreter’s\n'
-          '   standard input, output and error streams; they are all open in '
-          'text\n'
-          '   mode and therefore follow the interface defined by the\n'
-          '   "io.TextIOBase" abstract class.\n'
           '\n'
           'Internal types\n'
-          '   A few types used internally by the interpreter are exposed to '
-          'the\n'
-          '   user. Their definitions may change with future versions of the\n'
-          '   interpreter, but they are mentioned here for completeness.\n'
-          '\n'
-          '   Code objects\n'
-          '      Code objects represent *byte-compiled* executable Python '
-          'code,\n'
-          '      or *bytecode*. The difference between a code object and a\n'
-          '      function object is that the function object contains an '
-          'explicit\n'
-          '      reference to the function’s globals (the module in which it '
-          'was\n'
-          '      defined), while a code object contains no context; also the\n'
-          '      default argument values are stored in the function object, '
-          'not\n'
-          '      in the code object (because they represent values calculated '
-          'at\n'
-          '      run-time).  Unlike function objects, code objects are '
-          'immutable\n'
-          '      and contain no references (directly or indirectly) to '
-          'mutable\n'
-          '      objects.\n'
-          '\n'
-          '      Special read-only attributes: "co_name" gives the function '
-          'name;\n'
-          '      "co_qualname" gives the fully qualified function name;\n'
-          '      "co_argcount" is the total number of positional arguments\n'
-          '      (including positional-only arguments and arguments with '
-          'default\n'
-          '      values); "co_posonlyargcount" is the number of '
-          'positional-only\n'
-          '      arguments (including arguments with default values);\n'
-          '      "co_kwonlyargcount" is the number of keyword-only arguments\n'
-          '      (including arguments with default values); "co_nlocals" is '
-          'the\n'
-          '      number of local variables used by the function (including\n'
-          '      arguments); "co_varnames" is a tuple containing the names of '
-          'the\n'
-          '      local variables (starting with the argument names);\n'
-          '      "co_cellvars" is a tuple containing the names of local '
-          'variables\n'
-          '      that are referenced by nested functions; "co_freevars" is a\n'
-          '      tuple containing the names of free variables; "co_code" is a\n'
-          '      string representing the sequence of bytecode instructions;\n'
-          '      "co_consts" is a tuple containing the literals used by the\n'
-          '      bytecode; "co_names" is a tuple containing the names used by '
-          'the\n'
-          '      bytecode; "co_filename" is the filename from which the code '
-          'was\n'
-          '      compiled; "co_firstlineno" is the first line number of the\n'
-          '      function; "co_lnotab" is a string encoding the mapping from\n'
-          '      bytecode offsets to line numbers (for details see the source\n'
-          '      code of the interpreter, is deprecated since 3.12 and may be\n'
-          '      removed in 3.14); "co_stacksize" is the required stack size;\n'
-          '      "co_flags" is an integer encoding a number of flags for the\n'
-          '      interpreter.\n'
-          '\n'
-          '      The following flag bits are defined for "co_flags": bit '
-          '"0x04"\n'
-          '      is set if the function uses the "*arguments" syntax to accept '
-          'an\n'
-          '      arbitrary number of positional arguments; bit "0x08" is set '
-          'if\n'
-          '      the function uses the "**keywords" syntax to accept '
-          'arbitrary\n'
-          '      keyword arguments; bit "0x20" is set if the function is a\n'
-          '      generator.\n'
+          '==============\n'
+          '\n'
+          'A few types used internally by the interpreter are exposed to the\n'
+          'user. Their definitions may change with future versions of the\n'
+          'interpreter, but they are mentioned here for completeness.\n'
+          '\n'
           '\n'
-          '      Future feature declarations ("from __future__ import '
-          'division")\n'
-          '      also use bits in "co_flags" to indicate whether a code '
+          'Code objects\n'
+          '------------\n'
+          '\n'
+          'Code objects represent *byte-compiled* executable Python code, or\n'
+          '*bytecode*. The difference between a code object and a function '
           'object\n'
-          '      was compiled with a particular feature enabled: bit "0x2000" '
+          'is that the function object contains an explicit reference to the\n'
+          'function’s globals (the module in which it was defined), while a '
+          'code\n'
+          'object contains no context; also the default argument values are\n'
+          'stored in the function object, not in the code object (because '
+          'they\n'
+          'represent values calculated at run-time).  Unlike function '
+          'objects,\n'
+          'code objects are immutable and contain no references (directly or\n'
+          'indirectly) to mutable objects.\n'
+          '\n'
+          'Special read-only attributes: "co_name" gives the function name;\n'
+          '"co_qualname" gives the fully qualified function name; '
+          '"co_argcount"\n'
+          'is the total number of positional arguments (including '
+          'positional-only\n'
+          'arguments and arguments with default values); "co_posonlyargcount" '
+          'is\n'
+          'the number of positional-only arguments (including arguments with\n'
+          'default values); "co_kwonlyargcount" is the number of keyword-only\n'
+          'arguments (including arguments with default values); "co_nlocals" '
           'is\n'
-          '      set if the function was compiled with future division '
-          'enabled;\n'
-          '      bits "0x10" and "0x1000" were used in earlier versions of\n'
-          '      Python.\n'
+          'the number of local variables used by the function (including\n'
+          'arguments); "co_varnames" is a tuple containing the names of the '
+          'local\n'
+          'variables (starting with the argument names); "co_cellvars" is a '
+          'tuple\n'
+          'containing the names of local variables that are referenced by '
+          'nested\n'
+          'functions; "co_freevars" is a tuple containing the names of free\n'
+          'variables; "co_code" is a string representing the sequence of '
+          'bytecode\n'
+          'instructions; "co_consts" is a tuple containing the literals used '
+          'by\n'
+          'the bytecode; "co_names" is a tuple containing the names used by '
+          'the\n'
+          'bytecode; "co_filename" is the filename from which the code was\n'
+          'compiled; "co_firstlineno" is the first line number of the '
+          'function;\n'
+          '"co_lnotab" is a string encoding the mapping from bytecode offsets '
+          'to\n'
+          'line numbers (for details see the source code of the interpreter, '
+          'is\n'
+          'deprecated since 3.12 and may be removed in 3.14); "co_stacksize" '
+          'is\n'
+          'the required stack size; "co_flags" is an integer encoding a number '
+          'of\n'
+          'flags for the interpreter.\n'
           '\n'
-          '      Other bits in "co_flags" are reserved for internal use.\n'
+          'The following flag bits are defined for "co_flags": bit "0x04" is '
+          'set\n'
+          'if the function uses the "*arguments" syntax to accept an '
+          'arbitrary\n'
+          'number of positional arguments; bit "0x08" is set if the function '
+          'uses\n'
+          'the "**keywords" syntax to accept arbitrary keyword arguments; bit\n'
+          '"0x20" is set if the function is a generator.\n'
+          '\n'
+          'Future feature declarations ("from __future__ import division") '
+          'also\n'
+          'use bits in "co_flags" to indicate whether a code object was '
+          'compiled\n'
+          'with a particular feature enabled: bit "0x2000" is set if the '
+          'function\n'
+          'was compiled with future division enabled; bits "0x10" and '
+          '"0x1000"\n'
+          'were used in earlier versions of Python.\n'
           '\n'
-          '      If a code object represents a function, the first item in\n'
-          '      "co_consts" is the documentation string of the function, or\n'
-          '      "None" if undefined.\n'
+          'Other bits in "co_flags" are reserved for internal use.\n'
           '\n'
-          '      codeobject.co_positions()\n'
+          'If a code object represents a function, the first item in '
+          '"co_consts"\n'
+          'is the documentation string of the function, or "None" if '
+          'undefined.\n'
           '\n'
-          '         Returns an iterable over the source code positions of '
-          'each\n'
-          '         bytecode instruction in the code object.\n'
+          'codeobject.co_positions()\n'
           '\n'
-          '         The iterator returns tuples containing the "(start_line,\n'
-          '         end_line, start_column, end_column)". The *i-th* tuple\n'
-          '         corresponds to the position of the source code that '
-          'compiled\n'
-          '         to the *i-th* instruction. Column information is '
-          '0-indexed\n'
-          '         utf-8 byte offsets on the given source line.\n'
+          '   Returns an iterable over the source code positions of each '
+          'bytecode\n'
+          '   instruction in the code object.\n'
           '\n'
-          '         This positional information can be missing. A '
-          'non-exhaustive\n'
-          '         lists of cases where this may happen:\n'
+          '   The iterator returns tuples containing the "(start_line, '
+          'end_line,\n'
+          '   start_column, end_column)". The *i-th* tuple corresponds to the\n'
+          '   position of the source code that compiled to the *i-th*\n'
+          '   instruction. Column information is 0-indexed utf-8 byte offsets '
+          'on\n'
+          '   the given source line.\n'
           '\n'
-          '         * Running the interpreter with "-X" "no_debug_ranges".\n'
+          '   This positional information can be missing. A non-exhaustive '
+          'lists\n'
+          '   of cases where this may happen:\n'
           '\n'
-          '         * Loading a pyc file compiled while using "-X"\n'
-          '           "no_debug_ranges".\n'
+          '   * Running the interpreter with "-X" "no_debug_ranges".\n'
           '\n'
-          '         * Position tuples corresponding to artificial '
-          'instructions.\n'
+          '   * Loading a pyc file compiled while using "-X" '
+          '"no_debug_ranges".\n'
           '\n'
-          '         * Line and column numbers that can’t be represented due '
-          'to\n'
-          '           implementation specific limitations.\n'
+          '   * Position tuples corresponding to artificial instructions.\n'
           '\n'
-          '         When this occurs, some or all of the tuple elements can '
-          'be\n'
-          '         "None".\n'
+          '   * Line and column numbers that can’t be represented due to\n'
+          '     implementation specific limitations.\n'
           '\n'
-          '         New in version 3.11.\n'
+          '   When this occurs, some or all of the tuple elements can be '
+          '"None".\n'
           '\n'
-          '         Note:\n'
+          '   New in version 3.11.\n'
           '\n'
-          '           This feature requires storing column positions in code\n'
-          '           objects which may result in a small increase of disk '
-          'usage\n'
-          '           of compiled Python files or interpreter memory usage. '
-          'To\n'
-          '           avoid storing the extra information and/or deactivate\n'
-          '           printing the extra traceback information, the "-X"\n'
-          '           "no_debug_ranges" command line flag or the\n'
-          '           "PYTHONNODEBUGRANGES" environment variable can be used.\n'
+          '   Note:\n'
           '\n'
-          '   Frame objects\n'
-          '      Frame objects represent execution frames.  They may occur in\n'
-          '      traceback objects (see below), and are also passed to '
-          'registered\n'
-          '      trace functions.\n'
+          '     This feature requires storing column positions in code '
+          'objects\n'
+          '     which may result in a small increase of disk usage of '
+          'compiled\n'
+          '     Python files or interpreter memory usage. To avoid storing '
+          'the\n'
+          '     extra information and/or deactivate printing the extra '
+          'traceback\n'
+          '     information, the "-X" "no_debug_ranges" command line flag or '
+          'the\n'
+          '     "PYTHONNODEBUGRANGES" environment variable can be used.\n'
+          '\n'
+          '\n'
+          'Frame objects\n'
+          '-------------\n'
+          '\n'
+          'Frame objects represent execution frames.  They may occur in '
+          'traceback\n'
+          'objects (see below), and are also passed to registered trace\n'
+          'functions.\n'
+          '\n'
+          'Special read-only attributes: "f_back" is to the previous stack '
+          'frame\n'
+          '(towards the caller), or "None" if this is the bottom stack frame;\n'
+          '"f_code" is the code object being executed in this frame; '
+          '"f_locals"\n'
+          'is the dictionary used to look up local variables; "f_globals" is '
+          'used\n'
+          'for global variables; "f_builtins" is used for built-in '
+          '(intrinsic)\n'
+          'names; "f_lasti" gives the precise instruction (this is an index '
+          'into\n'
+          'the bytecode string of the code object).\n'
+          '\n'
+          'Accessing "f_code" raises an auditing event "object.__getattr__" '
+          'with\n'
+          'arguments "obj" and ""f_code"".\n'
+          '\n'
+          'Special writable attributes: "f_trace", if not "None", is a '
+          'function\n'
+          'called for various events during code execution (this is used by '
+          'the\n'
+          'debugger). Normally an event is triggered for each new source line '
+          '-\n'
+          'this can be disabled by setting "f_trace_lines" to "False".\n'
           '\n'
-          '      Special read-only attributes: "f_back" is to the previous '
-          'stack\n'
-          '      frame (towards the caller), or "None" if this is the bottom\n'
-          '      stack frame; "f_code" is the code object being executed in '
+          'Implementations *may* allow per-opcode events to be requested by\n'
+          'setting "f_trace_opcodes" to "True". Note that this may lead to\n'
+          'undefined interpreter behaviour if exceptions raised by the trace\n'
+          'function escape to the function being traced.\n'
+          '\n'
+          '"f_lineno" is the current line number of the frame — writing to '
           'this\n'
-          '      frame; "f_locals" is the dictionary used to look up local\n'
-          '      variables; "f_globals" is used for global variables;\n'
-          '      "f_builtins" is used for built-in (intrinsic) names; '
-          '"f_lasti"\n'
-          '      gives the precise instruction (this is an index into the\n'
-          '      bytecode string of the code object).\n'
-          '\n'
-          '      Accessing "f_code" raises an auditing event '
-          '"object.__getattr__"\n'
-          '      with arguments "obj" and ""f_code"".\n'
-          '\n'
-          '      Special writable attributes: "f_trace", if not "None", is a\n'
-          '      function called for various events during code execution '
-          '(this\n'
-          '      is used by the debugger). Normally an event is triggered for\n'
-          '      each new source line - this can be disabled by setting\n'
-          '      "f_trace_lines" to "False".\n'
-          '\n'
-          '      Implementations *may* allow per-opcode events to be requested '
-          'by\n'
-          '      setting "f_trace_opcodes" to "True". Note that this may lead '
-          'to\n'
-          '      undefined interpreter behaviour if exceptions raised by the\n'
-          '      trace function escape to the function being traced.\n'
+          'from within a trace function jumps to the given line (only for the\n'
+          'bottom-most frame).  A debugger can implement a Jump command (aka '
+          'Set\n'
+          'Next Statement) by writing to f_lineno.\n'
           '\n'
-          '      "f_lineno" is the current line number of the frame — writing '
-          'to\n'
-          '      this from within a trace function jumps to the given line '
-          '(only\n'
-          '      for the bottom-most frame).  A debugger can implement a Jump\n'
-          '      command (aka Set Next Statement) by writing to f_lineno.\n'
+          'Frame objects support one method:\n'
+          '\n'
+          'frame.clear()\n'
+          '\n'
+          '   This method clears all references to local variables held by '
+          'the\n'
+          '   frame.  Also, if the frame belonged to a generator, the '
+          'generator\n'
+          '   is finalized.  This helps break reference cycles involving '
+          'frame\n'
+          '   objects (for example when catching an exception and storing its\n'
+          '   traceback for later use).\n'
           '\n'
-          '      Frame objects support one method:\n'
+          '   "RuntimeError" is raised if the frame is currently executing or\n'
+          '   suspended.\n'
           '\n'
-          '      frame.clear()\n'
+          '   New in version 3.4.\n'
           '\n'
-          '         This method clears all references to local variables held '
-          'by\n'
-          '         the frame.  Also, if the frame belonged to a generator, '
+          '   Changed in version 3.13: Attempting to clear a suspended frame\n'
+          '   raises "RuntimeError" (as has always been the case for '
+          'executing\n'
+          '   frames).\n'
+          '\n'
+          '\n'
+          'Traceback objects\n'
+          '-----------------\n'
+          '\n'
+          'Traceback objects represent a stack trace of an exception.  A\n'
+          'traceback object is implicitly created when an exception occurs, '
+          'and\n'
+          'may also be explicitly created by calling "types.TracebackType".\n'
+          '\n'
+          'For implicitly created tracebacks, when the search for an '
+          'exception\n'
+          'handler unwinds the execution stack, at each unwound level a '
+          'traceback\n'
+          'object is inserted in front of the current traceback.  When an\n'
+          'exception handler is entered, the stack trace is made available to '
           'the\n'
-          '         generator is finalized.  This helps break reference '
-          'cycles\n'
-          '         involving frame objects (for example when catching an\n'
-          '         exception and storing its traceback for later use).\n'
+          'program. (See section The try statement.) It is accessible as the\n'
+          'third item of the tuple returned by "sys.exc_info()", and as the\n'
+          '"__traceback__" attribute of the caught exception.\n'
           '\n'
-          '         "RuntimeError" is raised if the frame is currently '
-          'executing.\n'
+          'When the program contains no suitable handler, the stack trace is\n'
+          'written (nicely formatted) to the standard error stream; if the\n'
+          'interpreter is interactive, it is also made available to the user '
+          'as\n'
+          '"sys.last_traceback".\n'
           '\n'
-          '         New in version 3.4.\n'
+          'For explicitly created tracebacks, it is up to the creator of the\n'
+          'traceback to determine how the "tb_next" attributes should be '
+          'linked\n'
+          'to form a full stack trace.\n'
           '\n'
-          '   Traceback objects\n'
-          '      Traceback objects represent a stack trace of an exception.  '
-          'A\n'
-          '      traceback object is implicitly created when an exception '
-          'occurs,\n'
-          '      and may also be explicitly created by calling\n'
-          '      "types.TracebackType".\n'
-          '\n'
-          '      For implicitly created tracebacks, when the search for an\n'
-          '      exception handler unwinds the execution stack, at each '
-          'unwound\n'
-          '      level a traceback object is inserted in front of the current\n'
-          '      traceback.  When an exception handler is entered, the stack\n'
-          '      trace is made available to the program. (See section The try\n'
-          '      statement.) It is accessible as the third item of the tuple\n'
-          '      returned by "sys.exc_info()", and as the "__traceback__"\n'
-          '      attribute of the caught exception.\n'
-          '\n'
-          '      When the program contains no suitable handler, the stack '
-          'trace\n'
-          '      is written (nicely formatted) to the standard error stream; '
-          'if\n'
-          '      the interpreter is interactive, it is also made available to '
+          'Special read-only attributes: "tb_frame" points to the execution '
+          'frame\n'
+          'of the current level; "tb_lineno" gives the line number where the\n'
+          'exception occurred; "tb_lasti" indicates the precise instruction. '
+          'The\n'
+          'line number and last instruction in the traceback may differ from '
           'the\n'
-          '      user as "sys.last_traceback".\n'
+          'line number of its frame object if the exception occurred in a '
+          '"try"\n'
+          'statement with no matching except clause or with a finally clause.\n'
           '\n'
-          '      For explicitly created tracebacks, it is up to the creator '
-          'of\n'
-          '      the traceback to determine how the "tb_next" attributes '
-          'should\n'
-          '      be linked to form a full stack trace.\n'
-          '\n'
-          '      Special read-only attributes: "tb_frame" points to the '
-          'execution\n'
-          '      frame of the current level; "tb_lineno" gives the line '
-          'number\n'
-          '      where the exception occurred; "tb_lasti" indicates the '
-          'precise\n'
-          '      instruction. The line number and last instruction in the\n'
-          '      traceback may differ from the line number of its frame object '
+          'Accessing "tb_frame" raises an auditing event "object.__getattr__"\n'
+          'with arguments "obj" and ""tb_frame"".\n'
+          '\n'
+          'Special writable attribute: "tb_next" is the next level in the '
+          'stack\n'
+          'trace (towards the frame where the exception occurred), or "None" '
           'if\n'
-          '      the exception occurred in a "try" statement with no matching\n'
-          '      except clause or with a finally clause.\n'
+          'there is no next level.\n'
           '\n'
-          '      Accessing "tb_frame" raises an auditing event\n'
-          '      "object.__getattr__" with arguments "obj" and ""tb_frame"".\n'
+          'Changed in version 3.7: Traceback objects can now be explicitly\n'
+          'instantiated from Python code, and the "tb_next" attribute of '
+          'existing\n'
+          'instances can be updated.\n'
           '\n'
-          '      Special writable attribute: "tb_next" is the next level in '
-          'the\n'
-          '      stack trace (towards the frame where the exception occurred), '
-          'or\n'
-          '      "None" if there is no next level.\n'
           '\n'
-          '      Changed in version 3.7: Traceback objects can now be '
-          'explicitly\n'
-          '      instantiated from Python code, and the "tb_next" attribute '
-          'of\n'
-          '      existing instances can be updated.\n'
+          'Slice objects\n'
+          '-------------\n'
           '\n'
-          '   Slice objects\n'
-          '      Slice objects are used to represent slices for '
-          '"__getitem__()"\n'
-          '      methods.  They are also created by the built-in "slice()"\n'
-          '      function.\n'
+          'Slice objects are used to represent slices for "__getitem__()"\n'
+          'methods.  They are also created by the built-in "slice()" '
+          'function.\n'
           '\n'
-          '      Special read-only attributes: "start" is the lower bound; '
-          '"stop"\n'
-          '      is the upper bound; "step" is the step value; each is "None" '
-          'if\n'
-          '      omitted.  These attributes can have any type.\n'
+          'Special read-only attributes: "start" is the lower bound; "stop" '
+          'is\n'
+          'the upper bound; "step" is the step value; each is "None" if '
+          'omitted.\n'
+          'These attributes can have any type.\n'
           '\n'
-          '      Slice objects support one method:\n'
+          'Slice objects support one method:\n'
           '\n'
-          '      slice.indices(self, length)\n'
+          'slice.indices(self, length)\n'
           '\n'
-          '         This method takes a single integer argument *length* and\n'
-          '         computes information about the slice that the slice '
-          'object\n'
-          '         would describe if applied to a sequence of *length* '
-          'items.\n'
-          '         It returns a tuple of three integers; respectively these '
-          'are\n'
-          '         the *start* and *stop* indices and the *step* or stride\n'
-          '         length of the slice. Missing or out-of-bounds indices are\n'
-          '         handled in a manner consistent with regular slices.\n'
-          '\n'
-          '   Static method objects\n'
-          '      Static method objects provide a way of defeating the\n'
-          '      transformation of function objects to method objects '
-          'described\n'
-          '      above. A static method object is a wrapper around any other\n'
-          '      object, usually a user-defined method object. When a static\n'
-          '      method object is retrieved from a class or a class instance, '
-          'the\n'
-          '      object actually returned is the wrapped object, which is not\n'
-          '      subject to any further transformation. Static method objects '
-          'are\n'
-          '      also callable. Static method objects are created by the '
-          'built-in\n'
-          '      "staticmethod()" constructor.\n'
+          '   This method takes a single integer argument *length* and '
+          'computes\n'
+          '   information about the slice that the slice object would describe '
+          'if\n'
+          '   applied to a sequence of *length* items.  It returns a tuple of\n'
+          '   three integers; respectively these are the *start* and *stop*\n'
+          '   indices and the *step* or stride length of the slice. Missing '
+          'or\n'
+          '   out-of-bounds indices are handled in a manner consistent with\n'
+          '   regular slices.\n'
           '\n'
-          '   Class method objects\n'
-          '      A class method object, like a static method object, is a '
-          'wrapper\n'
-          '      around another object that alters the way in which that '
-          'object\n'
-          '      is retrieved from classes and class instances. The behaviour '
+          '\n'
+          'Static method objects\n'
+          '---------------------\n'
+          '\n'
+          'Static method objects provide a way of defeating the transformation '
           'of\n'
-          '      class method objects upon such retrieval is described above,\n'
-          '      under “User-defined methods�. Class method objects are '
-          'created\n'
-          '      by the built-in "classmethod()" constructor.\n',
+          'function objects to method objects described above. A static '
+          'method\n'
+          'object is a wrapper around any other object, usually a '
+          'user-defined\n'
+          'method object. When a static method object is retrieved from a '
+          'class\n'
+          'or a class instance, the object actually returned is the wrapped\n'
+          'object, which is not subject to any further transformation. Static\n'
+          'method objects are also callable. Static method objects are created '
+          'by\n'
+          'the built-in "staticmethod()" constructor.\n'
+          '\n'
+          '\n'
+          'Class method objects\n'
+          '--------------------\n'
+          '\n'
+          'A class method object, like a static method object, is a wrapper\n'
+          'around another object that alters the way in which that object is\n'
+          'retrieved from classes and class instances. The behaviour of class\n'
+          'method objects upon such retrieval is described above, under '
+          '“User-\n'
+          'defined methods�. Class method objects are created by the built-in\n'
+          '"classmethod()" constructor.\n',
  'typesfunctions': 'Functions\n'
                    '*********\n'
                    '\n'
@@ -14399,21 +15222,23 @@
                  '\n'
                  'Keys views are set-like since their entries are unique and '
                  '*hashable*.\n'
-                 'If all values are hashable, so that "(key, value)" pairs are '
-                 'unique\n'
-                 'and hashable, then the items view is also set-like.  (Values '
-                 'views are\n'
-                 'not treated as set-like since the entries are generally not '
-                 'unique.)\n'
-                 'For set-like views, all of the operations defined for the '
-                 'abstract\n'
-                 'base class "collections.abc.Set" are available (for example, '
-                 '"==",\n'
-                 '"<", or "^").  While using set operators, set-like views '
-                 'accept any\n'
-                 'iterable as the other operand, unlike sets which only accept '
-                 'sets as\n'
-                 'the input.\n'
+                 'Items views also have set-like operations since the (key, '
+                 'value) pairs\n'
+                 'are unique and the keys are hashable. If all values in an '
+                 'items view\n'
+                 'are hashable as well, then the items view can interoperate '
+                 'with other\n'
+                 'sets. (Values views are not treated as set-like since the '
+                 'entries are\n'
+                 'generally not unique.)  For set-like views, all of the '
+                 'operations\n'
+                 'defined for the abstract base class "collections.abc.Set" '
+                 'are\n'
+                 'available (for example, "==", "<", or "^").  While using '
+                 'set\n'
+                 'operators, set-like views accept any iterable as the other '
+                 'operand,\n'
+                 'unlike sets which only accept sets as the input.\n'
                  '\n'
                  'An example of dictionary view usage:\n'
                  '\n'
@@ -14446,10 +15271,12 @@
                  '   >>> # set operations\n'
                  "   >>> keys & {'eggs', 'bacon', 'salad'}\n"
                  "   {'bacon'}\n"
-                 "   >>> keys ^ {'sausage', 'juice'}\n"
-                 "   {'juice', 'sausage', 'bacon', 'spam'}\n"
-                 "   >>> keys | ['juice', 'juice', 'juice']\n"
-                 "   {'juice', 'sausage', 'bacon', 'spam', 'eggs'}\n"
+                 "   >>> keys ^ {'sausage', 'juice'} == {'juice', 'sausage', "
+                 "'bacon', 'spam'}\n"
+                 '   True\n'
+                 "   >>> keys | ['juice', 'juice', 'juice'] == {'bacon', "
+                 "'spam', 'juice'}\n"
+                 '   True\n'
                  '\n'
                  '   >>> # get back a read-only proxy for the original '
                  'dictionary\n'
diff --git a/Lib/random.py b/Lib/random.py
index 586c3f7f9da938..875beb2f8cf41c 100644
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -50,7 +50,6 @@
 # Adrian Baddeley.  Adapted by Raymond Hettinger for use with
 # the Mersenne Twister  and os.urandom() core generators.
 
-from warnings import warn as _warn
 from math import log as _log, exp as _exp, pi as _pi, e as _e, ceil as _ceil
 from math import sqrt as _sqrt, acos as _acos, cos as _cos, sin as _sin
 from math import tau as TWOPI, floor as _floor, isfinite as _isfinite
@@ -63,13 +62,6 @@
 import os as _os
 import _random
 
-try:
-    # hashlib is pretty heavy to load, try lean internal module first
-    from _sha512 import sha512 as _sha512
-except ImportError:
-    # fallback to official implementation
-    from hashlib import sha512 as _sha512
-
 __all__ = [
     "Random",
     "SystemRandom",
@@ -105,6 +97,7 @@
 BPF = 53        # Number of bits in a float
 RECIP_BPF = 2 ** -BPF
 _ONE = 1
+_sha512 = None
 
 
 class Random(_random.Random):
@@ -159,13 +152,23 @@ def seed(self, a=None, version=2):
             a = -2 if x == -1 else x
 
         elif version == 2 and isinstance(a, (str, bytes, bytearray)):
+            global _sha512
+            if _sha512 is None:
+                try:
+                    # hashlib is pretty heavy to load, try lean internal
+                    # module first
+                    from _sha2 import sha512 as _sha512
+                except ImportError:
+                    # fallback to official implementation
+                    from hashlib import sha512 as _sha512
+
             if isinstance(a, str):
                 a = a.encode()
             a = int.from_bytes(a + _sha512(a).digest())
 
         elif not isinstance(a, (type(None), int, float, str, bytes, bytearray)):
-            raise TypeError('The only supported seed types are: None,\n'
-                            'int, float, str, bytes, and bytearray.')
+            raise TypeError('The only supported seed types are:\n'
+                            'None, int, float, str, bytes, and bytearray.')
 
         super().seed(a)
         self.gauss_next = None
@@ -257,9 +260,10 @@ def _randbelow_without_getrandbits(self, n, maxsize=1<<BPF):
 
         random = self.random
         if n >= maxsize:
-            _warn("Underlying random() generator does not supply \n"
-                "enough bits to choose from a population range this large.\n"
-                "To remove the range limitation, add a getrandbits() method.")
+            from warnings import warn
+            warn("Underlying random() generator does not supply \n"
+                 "enough bits to choose from a population range this large.\n"
+                 "To remove the range limitation, add a getrandbits() method.")
             return _floor(random() * n)
         rem = maxsize % n
         limit = (maxsize - rem) / maxsize   # int(limit * maxsize) % n == 0
@@ -492,7 +496,14 @@ def choices(self, population, weights=None, *, cum_weights=None, k=1):
     ## -------------------- real-valued distributions  -------------------
 
     def uniform(self, a, b):
-        "Get a random number in the range [a, b) or [a, b] depending on rounding."
+        """Get a random number in the range [a, b) or [a, b] depending on rounding.
+
+        The mean (expected value) and variance of the random variable are:
+
+            E[X] = (a + b) / 2
+            Var[X] = (b - a) ** 2 / 12
+
+        """
         return a + (b - a) * self.random()
 
     def triangular(self, low=0.0, high=1.0, mode=None):
@@ -503,6 +514,11 @@ def triangular(self, low=0.0, high=1.0, mode=None):
 
         http://en.wikipedia.org/wiki/Triangular_distribution
 
+        The mean (expected value) and variance of the random variable are:
+
+            E[X] = (low + high + mode) / 3
+            Var[X] = (low**2 + high**2 + mode**2 - low*high - low*mode - high*mode) / 18
+
         """
         u = self.random()
         try:
@@ -593,12 +609,15 @@ def expovariate(self, lambd=1.0):
         positive infinity if lambd is positive, and from negative
         infinity to 0 if lambd is negative.
 
-        """
-        # lambd: rate lambd = 1/mean
-        # ('lambda' is a Python reserved word)
+        The mean (expected value) and variance of the random variable are:
 
+            E[X] = 1 / lambd
+            Var[X] = 1 / lambd ** 2
+
+        """
         # we use 1-random() instead of random() to preclude the
         # possibility of taking the log of zero.
+
         return -_log(1.0 - self.random()) / lambd
 
     def vonmisesvariate(self, mu, kappa):
@@ -654,8 +673,12 @@ def gammavariate(self, alpha, beta):
           pdf(x) =  --------------------------------------
                       math.gamma(alpha) * beta ** alpha
 
+        The mean (expected value) and variance of the random variable are:
+
+            E[X] = alpha * beta
+            Var[X] = alpha * beta ** 2
+
         """
-        # alpha > 0, beta > 0, mean is alpha*beta, variance is alpha*beta**2
 
         # Warning: a few older sources define the gamma distribution in terms
         # of alpha > -1.0
@@ -714,6 +737,11 @@ def betavariate(self, alpha, beta):
         Conditions on the parameters are alpha > 0 and beta > 0.
         Returned values range between 0 and 1.
 
+        The mean (expected value) and variance of the random variable are:
+
+            E[X] = alpha / (alpha + beta)
+            Var[X] = alpha * beta / ((alpha + beta)**2 * (alpha + beta + 1))
+
         """
         ## See
         ## http://mail.python.org/pipermail/python-bugs-list/2001-January/003752.html
@@ -766,6 +794,11 @@ def binomialvariate(self, n=1, p=0.5):
 
         Returns an integer in the range:   0 <= X <= n
 
+        The mean (expected value) and variance of the random variable are:
+
+            E[X] = n * p
+            Var[x] = n * p * (1 - p)
+
         """
         # Error check inputs and handle edge cases
         if n < 0:
@@ -827,7 +860,7 @@ def binomialvariate(self, n=1, p=0.5):
                 return k
 
             # Acceptance-rejection test.
-            # Note, the original paper errorneously omits the call to log(v)
+            # Note, the original paper erroneously omits the call to log(v)
             # when comparing to the log of the rescaled binomial distribution.
             if not setup_complete:
                 alpha = (2.83 + 5.1 / b) * spq
diff --git a/Lib/re/__init__.py b/Lib/re/__init__.py
index 4515650a721ac6..428d1b0d5fbd87 100644
--- a/Lib/re/__init__.py
+++ b/Lib/re/__init__.py
@@ -130,7 +130,7 @@
 # public symbols
 __all__ = [
     "match", "fullmatch", "search", "sub", "subn", "split",
-    "findall", "finditer", "compile", "purge", "template", "escape",
+    "findall", "finditer", "compile", "purge", "escape",
     "error", "Pattern", "Match", "A", "I", "L", "M", "S", "X", "U",
     "ASCII", "IGNORECASE", "LOCALE", "MULTILINE", "DOTALL", "VERBOSE",
     "UNICODE", "NOFLAG", "RegexFlag",
@@ -150,7 +150,6 @@ class RegexFlag:
     DOTALL = S = _compiler.SRE_FLAG_DOTALL # make dot match newline
     VERBOSE = X = _compiler.SRE_FLAG_VERBOSE # ignore whitespace and comments
     # sre extensions (experimental, don't rely on these)
-    TEMPLATE = T = _compiler.SRE_FLAG_TEMPLATE # unknown purpose, deprecated
     DEBUG = _compiler.SRE_FLAG_DEBUG # dump pattern after compilation
     __str__ = object.__str__
     _numeric_repr_ = hex
@@ -176,16 +175,39 @@ def search(pattern, string, flags=0):
     a Match object, or None if no match was found."""
     return _compile(pattern, flags).search(string)
 
-def sub(pattern, repl, string, count=0, flags=0):
+class _ZeroSentinel(int):
+    pass
+_zero_sentinel = _ZeroSentinel()
+
+def sub(pattern, repl, string, *args, count=_zero_sentinel, flags=_zero_sentinel):
     """Return the string obtained by replacing the leftmost
     non-overlapping occurrences of the pattern in string by the
     replacement repl.  repl can be either a string or a callable;
     if a string, backslash escapes in it are processed.  If it is
     a callable, it's passed the Match object and must return
     a replacement string to be used."""
+    if args:
+        if count is not _zero_sentinel:
+            raise TypeError("sub() got multiple values for argument 'count'")
+        count, *args = args
+        if args:
+            if flags is not _zero_sentinel:
+                raise TypeError("sub() got multiple values for argument 'flags'")
+            flags, *args = args
+            if args:
+                raise TypeError("sub() takes from 3 to 5 positional arguments "
+                                "but %d were given" % (5 + len(args)))
+
+        import warnings
+        warnings.warn(
+            "'count' is passed as positional argument",
+            DeprecationWarning, stacklevel=2
+        )
+
     return _compile(pattern, flags).sub(repl, string, count)
+sub.__text_signature__ = '(pattern, repl, string, count=0, flags=0)'
 
-def subn(pattern, repl, string, count=0, flags=0):
+def subn(pattern, repl, string, *args, count=_zero_sentinel, flags=_zero_sentinel):
     """Return a 2-tuple containing (new_string, number).
     new_string is the string obtained by replacing the leftmost
     non-overlapping occurrences of the pattern in the source
@@ -194,9 +216,28 @@ def subn(pattern, repl, string, count=0, flags=0):
     callable; if a string, backslash escapes in it are processed.
     If it is a callable, it's passed the Match object and must
     return a replacement string to be used."""
+    if args:
+        if count is not _zero_sentinel:
+            raise TypeError("subn() got multiple values for argument 'count'")
+        count, *args = args
+        if args:
+            if flags is not _zero_sentinel:
+                raise TypeError("subn() got multiple values for argument 'flags'")
+            flags, *args = args
+            if args:
+                raise TypeError("subn() takes from 3 to 5 positional arguments "
+                                "but %d were given" % (5 + len(args)))
+
+        import warnings
+        warnings.warn(
+            "'count' is passed as positional argument",
+            DeprecationWarning, stacklevel=2
+        )
+
     return _compile(pattern, flags).subn(repl, string, count)
+subn.__text_signature__ = '(pattern, repl, string, count=0, flags=0)'
 
-def split(pattern, string, maxsplit=0, flags=0):
+def split(pattern, string, *args, maxsplit=_zero_sentinel, flags=_zero_sentinel):
     """Split the source string by the occurrences of the pattern,
     returning a list containing the resulting substrings.  If
     capturing parentheses are used in pattern, then the text of all
@@ -204,7 +245,26 @@ def split(pattern, string, maxsplit=0, flags=0):
     list.  If maxsplit is nonzero, at most maxsplit splits occur,
     and the remainder of the string is returned as the final element
     of the list."""
+    if args:
+        if maxsplit is not _zero_sentinel:
+            raise TypeError("split() got multiple values for argument 'maxsplit'")
+        maxsplit, *args = args
+        if args:
+            if flags is not _zero_sentinel:
+                raise TypeError("split() got multiple values for argument 'flags'")
+            flags, *args = args
+            if args:
+                raise TypeError("split() takes from 2 to 4 positional arguments "
+                                "but %d were given" % (4 + len(args)))
+
+        import warnings
+        warnings.warn(
+            "'maxsplit' is passed as positional argument",
+            DeprecationWarning, stacklevel=2
+        )
+
     return _compile(pattern, flags).split(string, maxsplit)
+split.__text_signature__ = '(pattern, string, maxsplit=0, flags=0)'
 
 def findall(pattern, string, flags=0):
     """Return a list of all non-overlapping matches in the string.
@@ -233,17 +293,6 @@ def purge():
     _cache2.clear()
     _compile_template.cache_clear()
 
-def template(pattern, flags=0):
-    "Compile a template pattern, returning a Pattern object, deprecated"
-    import warnings
-    warnings.warn("The re.template() function is deprecated "
-                  "as it is an undocumented function "
-                  "without an obvious purpose. "
-                  "Use re.compile() instead.",
-                  DeprecationWarning)
-    with warnings.catch_warnings():
-        warnings.simplefilter("ignore", DeprecationWarning)  # warn just once
-        return _compile(pattern, flags|T)
 
 # SPECIAL_CHARS
 # closing ')', '}' and ']'
@@ -297,13 +346,6 @@ def _compile(pattern, flags):
             return pattern
         if not _compiler.isstring(pattern):
             raise TypeError("first argument must be string or compiled pattern")
-        if flags & T:
-            import warnings
-            warnings.warn("The re.TEMPLATE/re.T flag is deprecated "
-                    "as it is an undocumented flag "
-                    "without an obvious purpose. "
-                    "Don't use it.",
-                    DeprecationWarning)
         p = _compiler.compile(pattern, flags)
         if flags & DEBUG:
             return p
diff --git a/Lib/re/_compiler.py b/Lib/re/_compiler.py
index d8e0d2fdefdcca..f87712d6d6f9f8 100644
--- a/Lib/re/_compiler.py
+++ b/Lib/re/_compiler.py
@@ -101,8 +101,6 @@ def _compile(code, pattern, flags):
             else:
                 emit(ANY)
         elif op in REPEATING_CODES:
-            if flags & SRE_FLAG_TEMPLATE:
-                raise error("internal: unsupported template operator %r" % (op,))
             if _simple(av[2]):
                 emit(REPEATING_CODES[op][2])
                 skip = _len(code); emit(0)
@@ -149,6 +147,8 @@ def _compile(code, pattern, flags):
                 emit(0) # look ahead
             else:
                 lo, hi = av[1].getwidth()
+                if lo > MAXCODE:
+                    raise error("looks too much behind")
                 if lo != hi:
                     raise error("look-behind requires fixed-width pattern")
                 emit(lo) # look behind
@@ -549,7 +549,7 @@ def _compile_info(code, pattern, flags):
     else:
         emit(MAXCODE)
         prefix = prefix[:MAXCODE]
-    emit(min(hi, MAXCODE))
+    emit(hi)
     # add literal prefix
     if prefix:
         emit(len(prefix)) # length
diff --git a/Lib/re/_constants.py b/Lib/re/_constants.py
index d8718d36075aac..d8e483ac4f23b4 100644
--- a/Lib/re/_constants.py
+++ b/Lib/re/_constants.py
@@ -13,7 +13,7 @@
 
 # update when constants are added or removed
 
-MAGIC = 20221023
+MAGIC = 20230612
 
 from _sre import MAXREPEAT, MAXGROUPS
 
@@ -204,7 +204,6 @@ def _makecodes(*names):
 }
 
 # flags
-SRE_FLAG_TEMPLATE = 1 # template mode (unknown purpose, deprecated)
 SRE_FLAG_IGNORECASE = 2 # case insensitive
 SRE_FLAG_LOCALE = 4 # honour system locale
 SRE_FLAG_MULTILINE = 8 # treat target as multiline string
diff --git a/Lib/re/_parser.py b/Lib/re/_parser.py
index 5709acb6267238..f3c779340fe230 100644
--- a/Lib/re/_parser.py
+++ b/Lib/re/_parser.py
@@ -61,12 +61,15 @@
     "x": SRE_FLAG_VERBOSE,
     # extensions
     "a": SRE_FLAG_ASCII,
-    "t": SRE_FLAG_TEMPLATE,
     "u": SRE_FLAG_UNICODE,
 }
 
 TYPE_FLAGS = SRE_FLAG_ASCII | SRE_FLAG_LOCALE | SRE_FLAG_UNICODE
-GLOBAL_FLAGS = SRE_FLAG_DEBUG | SRE_FLAG_TEMPLATE
+GLOBAL_FLAGS = SRE_FLAG_DEBUG
+
+# Maximal value returned by SubPattern.getwidth().
+# Must be larger than MAXREPEAT, MAXCODE and sys.maxsize.
+MAXWIDTH = 1 << 64
 
 class State:
     # keeps track of state for parsing
@@ -114,7 +117,6 @@ def __init__(self, state, data=None):
         self.width = None
 
     def dump(self, level=0):
-        nl = True
         seqtypes = (tuple, list)
         for op, av in self.data:
             print(level*"  " + str(op), end='')
@@ -136,6 +138,9 @@ def dump(self, level=0):
                 if item_no:
                     print(level*"  " + "ELSE")
                     item_no.dump(level+1)
+            elif isinstance(av, SubPattern):
+                print()
+                av.dump(level+1)
             elif isinstance(av, seqtypes):
                 nl = False
                 for a in av:
@@ -176,7 +181,7 @@ def getwidth(self):
         lo = hi = 0
         for op, av in self.data:
             if op is BRANCH:
-                i = MAXREPEAT - 1
+                i = MAXWIDTH
                 j = 0
                 for av in av[1]:
                     l, h = av.getwidth()
@@ -195,7 +200,10 @@ def getwidth(self):
             elif op in _REPEATCODES:
                 i, j = av[2].getwidth()
                 lo = lo + i * av[0]
-                hi = hi + j * av[1]
+                if av[1] == MAXREPEAT and j:
+                    hi = MAXWIDTH
+                else:
+                    hi = hi + j * av[1]
             elif op in _UNITCODES:
                 lo = lo + 1
                 hi = hi + 1
@@ -215,7 +223,7 @@ def getwidth(self):
                 hi = hi + j
             elif op is SUCCESS:
                 break
-        self.width = min(lo, MAXREPEAT - 1), min(hi, MAXREPEAT)
+        self.width = min(lo, MAXWIDTH), min(hi, MAXWIDTH)
         return self.width
 
 class Tokenizer:
@@ -772,8 +780,10 @@ def _parse(source, state, verbose, nested, first=False):
                                            source.tell() - start)
                     if char == "=":
                         subpatternappend((ASSERT, (dir, p)))
-                    else:
+                    elif p:
                         subpatternappend((ASSERT_NOT, (dir, p)))
+                    else:
+                        subpatternappend((FAILURE, ()))
                     continue
 
                 elif char == "(":
diff --git a/Lib/reprlib.py b/Lib/reprlib.py
index a92b3e3dbb613a..05bb1a0eb01795 100644
--- a/Lib/reprlib.py
+++ b/Lib/reprlib.py
@@ -29,6 +29,8 @@ def wrapper(self):
         wrapper.__name__ = getattr(user_function, '__name__')
         wrapper.__qualname__ = getattr(user_function, '__qualname__')
         wrapper.__annotations__ = getattr(user_function, '__annotations__', {})
+        wrapper.__type_params__ = getattr(user_function, '__type_params__', ())
+        wrapper.__wrapped__ = user_function
         return wrapper
 
     return decorating_function
diff --git a/Lib/selectors.py b/Lib/selectors.py
index af6a4f94b5008a..b8e5f6a4f77d89 100644
--- a/Lib/selectors.py
+++ b/Lib/selectors.py
@@ -66,12 +66,16 @@ def __init__(self, selector):
     def __len__(self):
         return len(self._selector._fd_to_key)
 
+    def get(self, fileobj, default=None):
+        fd = self._selector._fileobj_lookup(fileobj)
+        return self._selector._fd_to_key.get(fd, default)
+
     def __getitem__(self, fileobj):
-        try:
-            fd = self._selector._fileobj_lookup(fileobj)
-            return self._selector._fd_to_key[fd]
-        except KeyError:
-            raise KeyError("{!r} is not registered".format(fileobj)) from None
+        fd = self._selector._fileobj_lookup(fileobj)
+        key = self._selector._fd_to_key.get(fd)
+        if key is None:
+            raise KeyError("{!r} is not registered".format(fileobj))
+        return key
 
     def __iter__(self):
         return iter(self._selector._fd_to_key)
@@ -272,19 +276,6 @@ def close(self):
     def get_map(self):
         return self._map
 
-    def _key_from_fd(self, fd):
-        """Return the key associated to a given file descriptor.
-
-        Parameters:
-        fd -- file descriptor
-
-        Returns:
-        corresponding key, or None if not found
-        """
-        try:
-            return self._fd_to_key[fd]
-        except KeyError:
-            return None
 
 
 class SelectSelector(_BaseSelectorImpl):
@@ -323,17 +314,15 @@ def select(self, timeout=None):
             r, w, _ = self._select(self._readers, self._writers, [], timeout)
         except InterruptedError:
             return ready
-        r = set(r)
-        w = set(w)
-        for fd in r | w:
-            events = 0
-            if fd in r:
-                events |= EVENT_READ
-            if fd in w:
-                events |= EVENT_WRITE
-
-            key = self._key_from_fd(fd)
+        r = frozenset(r)
+        w = frozenset(w)
+        rw = r | w
+        fd_to_key_get = self._fd_to_key.get
+        for fd in rw:
+            key = fd_to_key_get(fd)
             if key:
+                events = ((fd in r and EVENT_READ)
+                          | (fd in w and EVENT_WRITE))
                 ready.append((key, events & key.events))
         return ready
 
@@ -350,11 +339,8 @@ def __init__(self):
 
     def register(self, fileobj, events, data=None):
         key = super().register(fileobj, events, data)
-        poller_events = 0
-        if events & EVENT_READ:
-            poller_events |= self._EVENT_READ
-        if events & EVENT_WRITE:
-            poller_events |= self._EVENT_WRITE
+        poller_events = ((events & EVENT_READ and self._EVENT_READ)
+                         | (events & EVENT_WRITE and self._EVENT_WRITE) )
         try:
             self._selector.register(key.fd, poller_events)
         except:
@@ -380,11 +366,8 @@ def modify(self, fileobj, events, data=None):
 
         changed = False
         if events != key.events:
-            selector_events = 0
-            if events & EVENT_READ:
-                selector_events |= self._EVENT_READ
-            if events & EVENT_WRITE:
-                selector_events |= self._EVENT_WRITE
+            selector_events = ((events & EVENT_READ and self._EVENT_READ)
+                               | (events & EVENT_WRITE and self._EVENT_WRITE))
             try:
                 self._selector.modify(key.fd, selector_events)
             except:
@@ -415,15 +398,13 @@ def select(self, timeout=None):
             fd_event_list = self._selector.poll(timeout)
         except InterruptedError:
             return ready
-        for fd, event in fd_event_list:
-            events = 0
-            if event & ~self._EVENT_READ:
-                events |= EVENT_WRITE
-            if event & ~self._EVENT_WRITE:
-                events |= EVENT_READ
 
-            key = self._key_from_fd(fd)
+        fd_to_key_get = self._fd_to_key.get
+        for fd, event in fd_event_list:
+            key = fd_to_key_get(fd)
             if key:
+                events = ((event & ~self._EVENT_READ and EVENT_WRITE)
+                           | (event & ~self._EVENT_WRITE and EVENT_READ))
                 ready.append((key, events & key.events))
         return ready
 
@@ -439,6 +420,9 @@ class PollSelector(_PollLikeSelector):
 
 if hasattr(select, 'epoll'):
 
+    _NOT_EPOLLIN = ~select.EPOLLIN
+    _NOT_EPOLLOUT = ~select.EPOLLOUT
+
     class EpollSelector(_PollLikeSelector):
         """Epoll-based selector."""
         _selector_cls = select.epoll
@@ -461,22 +445,20 @@ def select(self, timeout=None):
             # epoll_wait() expects `maxevents` to be greater than zero;
             # we want to make sure that `select()` can be called when no
             # FD is registered.
-            max_ev = max(len(self._fd_to_key), 1)
+            max_ev = len(self._fd_to_key) or 1
 
             ready = []
             try:
                 fd_event_list = self._selector.poll(timeout, max_ev)
             except InterruptedError:
                 return ready
-            for fd, event in fd_event_list:
-                events = 0
-                if event & ~select.EPOLLIN:
-                    events |= EVENT_WRITE
-                if event & ~select.EPOLLOUT:
-                    events |= EVENT_READ
 
-                key = self._key_from_fd(fd)
+            fd_to_key = self._fd_to_key
+            for fd, event in fd_event_list:
+                key = fd_to_key.get(fd)
                 if key:
+                    events = ((event & _NOT_EPOLLIN and EVENT_WRITE)
+                              | (event & _NOT_EPOLLOUT and EVENT_READ))
                     ready.append((key, events & key.events))
             return ready
 
@@ -509,6 +491,7 @@ class KqueueSelector(_BaseSelectorImpl):
         def __init__(self):
             super().__init__()
             self._selector = select.kqueue()
+            self._max_events = 0
 
         def fileno(self):
             return self._selector.fileno()
@@ -520,10 +503,12 @@ def register(self, fileobj, events, data=None):
                     kev = select.kevent(key.fd, select.KQ_FILTER_READ,
                                         select.KQ_EV_ADD)
                     self._selector.control([kev], 0, 0)
+                    self._max_events += 1
                 if events & EVENT_WRITE:
                     kev = select.kevent(key.fd, select.KQ_FILTER_WRITE,
                                         select.KQ_EV_ADD)
                     self._selector.control([kev], 0, 0)
+                    self._max_events += 1
             except:
                 super().unregister(fileobj)
                 raise
@@ -534,6 +519,7 @@ def unregister(self, fileobj):
             if key.events & EVENT_READ:
                 kev = select.kevent(key.fd, select.KQ_FILTER_READ,
                                     select.KQ_EV_DELETE)
+                self._max_events -= 1
                 try:
                     self._selector.control([kev], 0, 0)
                 except OSError:
@@ -543,6 +529,7 @@ def unregister(self, fileobj):
             if key.events & EVENT_WRITE:
                 kev = select.kevent(key.fd, select.KQ_FILTER_WRITE,
                                     select.KQ_EV_DELETE)
+                self._max_events -= 1
                 try:
                     self._selector.control([kev], 0, 0)
                 except OSError:
@@ -555,23 +542,21 @@ def select(self, timeout=None):
             # If max_ev is 0, kqueue will ignore the timeout. For consistent
             # behavior with the other selector classes, we prevent that here
             # (using max). See https://bugs.python.org/issue29255
-            max_ev = max(len(self._fd_to_key), 1)
+            max_ev = self._max_events or 1
             ready = []
             try:
                 kev_list = self._selector.control(None, max_ev, timeout)
             except InterruptedError:
                 return ready
+
+            fd_to_key_get = self._fd_to_key.get
             for kev in kev_list:
                 fd = kev.ident
                 flag = kev.filter
-                events = 0
-                if flag == select.KQ_FILTER_READ:
-                    events |= EVENT_READ
-                if flag == select.KQ_FILTER_WRITE:
-                    events |= EVENT_WRITE
-
-                key = self._key_from_fd(fd)
+                key = fd_to_key_get(fd)
                 if key:
+                    events = ((flag == select.KQ_FILTER_READ and EVENT_READ)
+                              | (flag == select.KQ_FILTER_WRITE and EVENT_WRITE))
                     ready.append((key, events & key.events))
             return ready
 
diff --git a/Lib/shelve.py b/Lib/shelve.py
index e053c397345a07..50584716e9ea64 100644
--- a/Lib/shelve.py
+++ b/Lib/shelve.py
@@ -226,6 +226,13 @@ def __init__(self, filename, flag='c', protocol=None, writeback=False):
         import dbm
         Shelf.__init__(self, dbm.open(filename, flag), protocol, writeback)
 
+    def clear(self):
+        """Remove all items from the shelf."""
+        # Call through to the clear method on dbm-backed shelves.
+        # see https://github.com/python/cpython/issues/107089
+        self.cache.clear()
+        self.dict.clear()
+
 
 def open(filename, flag='c', protocol=None, writeback=False):
     """Open a persistent dictionary for reading and writing.
diff --git a/Lib/shutil.py b/Lib/shutil.py
index 7d1a3d00011f37..dc3aac3e07f910 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -10,7 +10,6 @@
 import fnmatch
 import collections
 import errno
-import warnings
 
 try:
     import zlib
@@ -42,6 +41,8 @@
 
 if sys.platform == 'win32':
     import _winapi
+else:
+    _winapi = None
 
 COPY_BUFSIZE = 1024 * 1024 if _WINDOWS else 64 * 1024
 # This should never be removed, see rationale in:
@@ -435,6 +436,29 @@ def copy2(src, dst, *, follow_symlinks=True):
     """
     if os.path.isdir(dst):
         dst = os.path.join(dst, os.path.basename(src))
+
+    if hasattr(_winapi, "CopyFile2"):
+        src_ = os.fsdecode(src)
+        dst_ = os.fsdecode(dst)
+        flags = _winapi.COPY_FILE_ALLOW_DECRYPTED_DESTINATION # for compat
+        if not follow_symlinks:
+            flags |= _winapi.COPY_FILE_COPY_SYMLINK
+        try:
+            _winapi.CopyFile2(src_, dst_, flags)
+            return dst
+        except OSError as exc:
+            if (exc.winerror == _winapi.ERROR_PRIVILEGE_NOT_HELD
+                and not follow_symlinks):
+                # Likely encountered a symlink we aren't allowed to create.
+                # Fall back on the old code
+                pass
+            elif exc.winerror == _winapi.ERROR_ACCESS_DENIED:
+                # Possibly encountered a hidden or readonly file we can't
+                # overwrite. Fall back on old code
+                pass
+            else:
+                raise
+
     copyfile(src, dst, follow_symlinks=follow_symlinks)
     copystat(src, dst, follow_symlinks=follow_symlinks)
     return dst
@@ -456,7 +480,7 @@ def _copytree(entries, src, dst, symlinks, ignore, copy_function,
     if ignore is not None:
         ignored_names = ignore(os.fspath(src), [x.name for x in entries])
     else:
-        ignored_names = set()
+        ignored_names = ()
 
     os.makedirs(dst, exist_ok=dirs_exist_ok)
     errors = []
@@ -566,23 +590,21 @@ def copytree(src, dst, symlinks=False, ignore=None, copy_function=copy2,
                      dirs_exist_ok=dirs_exist_ok)
 
 if hasattr(os.stat_result, 'st_file_attributes'):
-    def _rmtree_islink(path):
-        try:
-            st = os.lstat(path)
-            return (stat.S_ISLNK(st.st_mode) or
-                (st.st_file_attributes & stat.FILE_ATTRIBUTE_REPARSE_POINT
-                 and st.st_reparse_tag == stat.IO_REPARSE_TAG_MOUNT_POINT))
-        except OSError:
-            return False
+    def _rmtree_islink(st):
+        return (stat.S_ISLNK(st.st_mode) or
+            (st.st_file_attributes & stat.FILE_ATTRIBUTE_REPARSE_POINT
+                and st.st_reparse_tag == stat.IO_REPARSE_TAG_MOUNT_POINT))
 else:
-    def _rmtree_islink(path):
-        return os.path.islink(path)
+    def _rmtree_islink(st):
+        return stat.S_ISLNK(st.st_mode)
 
 # version vulnerable to race conditions
 def _rmtree_unsafe(path, onexc):
     try:
         with os.scandir(path) as scandir_it:
             entries = list(scandir_it)
+    except FileNotFoundError:
+        return
     except OSError as err:
         onexc(os.scandir, path, err)
         entries = []
@@ -590,6 +612,8 @@ def _rmtree_unsafe(path, onexc):
         fullname = entry.path
         try:
             is_dir = entry.is_dir(follow_symlinks=False)
+        except FileNotFoundError:
+            continue
         except OSError:
             is_dir = False
 
@@ -600,6 +624,8 @@ def _rmtree_unsafe(path, onexc):
                     # a directory with a symlink after the call to
                     # os.scandir or entry.is_dir above.
                     raise OSError("Cannot call rmtree on a symbolic link")
+            except FileNotFoundError:
+                continue
             except OSError as err:
                 onexc(os.path.islink, fullname, err)
                 continue
@@ -607,10 +633,14 @@ def _rmtree_unsafe(path, onexc):
         else:
             try:
                 os.unlink(fullname)
+            except FileNotFoundError:
+                continue
             except OSError as err:
                 onexc(os.unlink, fullname, err)
     try:
         os.rmdir(path)
+    except FileNotFoundError:
+        pass
     except OSError as err:
         onexc(os.rmdir, path, err)
 
@@ -619,6 +649,8 @@ def _rmtree_safe_fd(topfd, path, onexc):
     try:
         with os.scandir(topfd) as scandir_it:
             entries = list(scandir_it)
+    except FileNotFoundError:
+        return
     except OSError as err:
         err.filename = path
         onexc(os.scandir, path, err)
@@ -627,6 +659,8 @@ def _rmtree_safe_fd(topfd, path, onexc):
         fullname = os.path.join(path, entry.name)
         try:
             is_dir = entry.is_dir(follow_symlinks=False)
+        except FileNotFoundError:
+            continue
         except OSError:
             is_dir = False
         else:
@@ -634,6 +668,8 @@ def _rmtree_safe_fd(topfd, path, onexc):
                 try:
                     orig_st = entry.stat(follow_symlinks=False)
                     is_dir = stat.S_ISDIR(orig_st.st_mode)
+                except FileNotFoundError:
+                    continue
                 except OSError as err:
                     onexc(os.lstat, fullname, err)
                     continue
@@ -641,6 +677,8 @@ def _rmtree_safe_fd(topfd, path, onexc):
             try:
                 dirfd = os.open(entry.name, os.O_RDONLY, dir_fd=topfd)
                 dirfd_closed = False
+            except FileNotFoundError:
+                continue
             except OSError as err:
                 onexc(os.open, fullname, err)
             else:
@@ -649,8 +687,15 @@ def _rmtree_safe_fd(topfd, path, onexc):
                         _rmtree_safe_fd(dirfd, fullname, onexc)
                         try:
                             os.close(dirfd)
+                        except OSError as err:
+                            # close() should not be retried after an error.
                             dirfd_closed = True
+                            onexc(os.close, fullname, err)
+                        dirfd_closed = True
+                        try:
                             os.rmdir(entry.name, dir_fd=topfd)
+                        except FileNotFoundError:
+                            continue
                         except OSError as err:
                             onexc(os.rmdir, fullname, err)
                     else:
@@ -664,10 +709,15 @@ def _rmtree_safe_fd(topfd, path, onexc):
                             onexc(os.path.islink, fullname, err)
                 finally:
                     if not dirfd_closed:
-                        os.close(dirfd)
+                        try:
+                            os.close(dirfd)
+                        except OSError as err:
+                            onexc(os.close, fullname, err)
         else:
             try:
                 os.unlink(entry.name, dir_fd=topfd)
+            except FileNotFoundError:
+                continue
             except OSError as err:
                 onexc(os.unlink, fullname, err)
 
@@ -697,10 +747,6 @@ def rmtree(path, ignore_errors=False, onerror=None, *, onexc=None, dir_fd=None):
     If both onerror and onexc are set, onerror is ignored and onexc is used.
     """
 
-    if onerror is not None:
-        warnings.warn("onerror argument is deprecated, use onexc instead",
-                      DeprecationWarning, stacklevel=2)
-
     sys.audit("shutil.rmtree", path, dir_fd)
     if ignore_errors:
         def onexc(*args):
@@ -730,13 +776,13 @@ def onexc(*args):
         # lstat()/open()/fstat() trick.
         try:
             orig_st = os.lstat(path, dir_fd=dir_fd)
-        except Exception as err:
+        except OSError as err:
             onexc(os.lstat, path, err)
             return
         try:
             fd = os.open(path, os.O_RDONLY, dir_fd=dir_fd)
             fd_closed = False
-        except Exception as err:
+        except OSError as err:
             onexc(os.open, path, err)
             return
         try:
@@ -744,7 +790,12 @@ def onexc(*args):
                 _rmtree_safe_fd(fd, path, onexc)
                 try:
                     os.close(fd)
+                except OSError as err:
+                    # close() should not be retried after an error.
                     fd_closed = True
+                    onexc(os.close, path, err)
+                fd_closed = True
+                try:
                     os.rmdir(path, dir_fd=dir_fd)
                 except OSError as err:
                     onexc(os.rmdir, path, err)
@@ -756,12 +807,20 @@ def onexc(*args):
                     onexc(os.path.islink, path, err)
         finally:
             if not fd_closed:
-                os.close(fd)
+                try:
+                    os.close(fd)
+                except OSError as err:
+                    onexc(os.close, path, err)
     else:
         if dir_fd is not None:
             raise NotImplementedError("dir_fd unavailable on this platform")
         try:
-            if _rmtree_islink(path):
+            st = os.lstat(path)
+        except OSError as err:
+            onexc(os.lstat, path, err)
+            return
+        try:
+            if _rmtree_islink(st):
                 # symlinks to directories are forbidden, see bug #1669
                 raise OSError("Cannot call rmtree on a symbolic link")
         except OSError as err:
@@ -1131,6 +1190,10 @@ def make_archive(base_name, format, root_dir=None, base_dir=None, verbose=0,
     supports_root_dir = getattr(func, 'supports_root_dir', False)
     save_cwd = None
     if root_dir is not None:
+        stmd = os.stat(root_dir).st_mode
+        if not stat.S_ISDIR(stmd):
+            raise NotADirectoryError(errno.ENOTDIR, 'Not a directory', root_dir)
+
         if supports_root_dir:
             # Support path-like base_name here for backwards-compatibility.
             base_name = os.fspath(base_name)
@@ -1525,8 +1588,16 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
         if use_bytes:
             pathext = [os.fsencode(ext) for ext in pathext]
 
-        # Always try checking the originally given cmd, if it doesn't match, try pathext
-        files = [cmd] + [cmd + ext for ext in pathext]
+        files = ([cmd] + [cmd + ext for ext in pathext])
+
+        # gh-109590. If we are looking for an executable, we need to look
+        # for a PATHEXT match. The first cmd is the direct match
+        # (e.g. python.exe instead of python)
+        # Check that direct match first if and only if the extension is in PATHEXT
+        # Otherwise check it last
+        suffix = os.path.splitext(files[0])[1].upper()
+        if mode & os.X_OK and not any(suffix == ext.upper() for ext in pathext):
+            files.append(files.pop(0))
     else:
         # On other platforms you don't have things like PATHEXT to tell you
         # what file suffixes are executable, so just pass on cmd as-is.
diff --git a/Lib/site.py b/Lib/site.py
index 672fa7b000ad02..2517b7e5f1d22a 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -444,8 +444,7 @@ def register_readline():
 
         # Reading the initialization (config) file may not be enough to set a
         # completion key, so we set one first and then read the file.
-        readline_doc = getattr(readline, '__doc__', '')
-        if readline_doc is not None and 'libedit' in readline_doc:
+        if readline.backend == 'editline':
             readline.parse_and_bind('bind ^I rl_complete')
         else:
             readline.parse_and_bind('tab: complete')
diff --git a/Lib/smtplib.py b/Lib/smtplib.py
index 18c91746fd7bf2..b3cc68a789a7d8 100755
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -542,7 +542,7 @@ def mail(self, sender, options=()):
                     raise SMTPNotSupportedError(
                         'SMTPUTF8 not supported by server')
             optionlist = ' ' + ' '.join(options)
-        self.putcmd("mail", "FROM:%s%s" % (quoteaddr(sender), optionlist))
+        self.putcmd("mail", "from:%s%s" % (quoteaddr(sender), optionlist))
         return self.getreply()
 
     def rcpt(self, recip, options=()):
@@ -550,7 +550,7 @@ def rcpt(self, recip, options=()):
         optionlist = ''
         if options and self.does_esmtp:
             optionlist = ' ' + ' '.join(options)
-        self.putcmd("rcpt", "TO:%s%s" % (quoteaddr(recip), optionlist))
+        self.putcmd("rcpt", "to:%s%s" % (quoteaddr(recip), optionlist))
         return self.getreply()
 
     def data(self, msg):
diff --git a/Lib/sndhdr.py b/Lib/sndhdr.py
deleted file mode 100644
index 45def9ad16d32c..00000000000000
--- a/Lib/sndhdr.py
+++ /dev/null
@@ -1,271 +0,0 @@
-"""Routines to help recognizing sound files.
-
-Function whathdr() recognizes various types of sound file headers.
-It understands almost all headers that SOX can decode.
-
-The return tuple contains the following items, in this order:
-- file type (as SOX understands it)
-- sampling rate (0 if unknown or hard to decode)
-- number of channels (0 if unknown or hard to decode)
-- number of frames in the file (-1 if unknown or hard to decode)
-- number of bits/sample, or 'U' for U-LAW, or 'A' for A-LAW
-
-If the file doesn't have a recognizable type, it returns None.
-If the file can't be opened, OSError is raised.
-
-To compute the total time, divide the number of frames by the
-sampling rate (a frame contains a sample for each channel).
-
-Function what() calls whathdr().  (It used to also use some
-heuristics for raw data, but this doesn't work very well.)
-
-Finally, the function test() is a simple main program that calls
-what() for all files mentioned on the argument list.  For directory
-arguments it calls what() for all files in that directory.  Default
-argument is "." (testing all files in the current directory).  The
-option -r tells it to recurse down directories found inside
-explicitly given directories.
-"""
-
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-# The file structure is top-down except that the test program and its
-# subroutine come last.
-
-__all__ = ['what', 'whathdr']
-
-from collections import namedtuple
-
-SndHeaders = namedtuple('SndHeaders',
-                        'filetype framerate nchannels nframes sampwidth')
-
-SndHeaders.filetype.__doc__ = ("""The value for type indicates the data type
-and will be one of the strings 'aifc', 'aiff', 'au','hcom',
-'sndr', 'sndt', 'voc', 'wav', '8svx', 'sb', 'ub', or 'ul'.""")
-SndHeaders.framerate.__doc__ = ("""The sampling_rate will be either the actual
-value or 0 if unknown or difficult to decode.""")
-SndHeaders.nchannels.__doc__ = ("""The number of channels or 0 if it cannot be
-determined or if the value is difficult to decode.""")
-SndHeaders.nframes.__doc__ = ("""The value for frames will be either the number
-of frames or -1.""")
-SndHeaders.sampwidth.__doc__ = ("""Either the sample size in bits or
-'A' for A-LAW or 'U' for u-LAW.""")
-
-def what(filename):
-    """Guess the type of a sound file."""
-    res = whathdr(filename)
-    return res
-
-
-def whathdr(filename):
-    """Recognize sound headers."""
-    with open(filename, 'rb') as f:
-        h = f.read(512)
-        for tf in tests:
-            res = tf(h, f)
-            if res:
-                return SndHeaders(*res)
-        return None
-
-
-#-----------------------------------#
-# Subroutines per sound header type #
-#-----------------------------------#
-
-tests = []
-
-def test_aifc(h, f):
-    """AIFC and AIFF files"""
-    with warnings.catch_warnings():
-        warnings.simplefilter('ignore', category=DeprecationWarning)
-        import aifc
-    if not h.startswith(b'FORM'):
-        return None
-    if h[8:12] == b'AIFC':
-        fmt = 'aifc'
-    elif h[8:12] == b'AIFF':
-        fmt = 'aiff'
-    else:
-        return None
-    f.seek(0)
-    try:
-        a = aifc.open(f, 'r')
-    except (EOFError, aifc.Error):
-        return None
-    return (fmt, a.getframerate(), a.getnchannels(),
-            a.getnframes(), 8 * a.getsampwidth())
-
-tests.append(test_aifc)
-
-
-def test_au(h, f):
-    """AU and SND files"""
-    if h.startswith(b'.snd'):
-        func = get_long_be
-    elif h[:4] in (b'\0ds.', b'dns.'):
-        func = get_long_le
-    else:
-        return None
-    filetype = 'au'
-    hdr_size = func(h[4:8])
-    data_size = func(h[8:12])
-    encoding = func(h[12:16])
-    rate = func(h[16:20])
-    nchannels = func(h[20:24])
-    sample_size = 1 # default
-    if encoding == 1:
-        sample_bits = 'U'
-    elif encoding == 2:
-        sample_bits = 8
-    elif encoding == 3:
-        sample_bits = 16
-        sample_size = 2
-    else:
-        sample_bits = '?'
-    frame_size = sample_size * nchannels
-    if frame_size:
-        nframe = data_size / frame_size
-    else:
-        nframe = -1
-    return filetype, rate, nchannels, nframe, sample_bits
-
-tests.append(test_au)
-
-
-def test_hcom(h, f):
-    """HCOM file"""
-    if h[65:69] != b'FSSD' or h[128:132] != b'HCOM':
-        return None
-    divisor = get_long_be(h[144:148])
-    if divisor:
-        rate = 22050 / divisor
-    else:
-        rate = 0
-    return 'hcom', rate, 1, -1, 8
-
-tests.append(test_hcom)
-
-
-def test_voc(h, f):
-    """VOC file"""
-    if not h.startswith(b'Creative Voice File\032'):
-        return None
-    sbseek = get_short_le(h[20:22])
-    rate = 0
-    if 0 <= sbseek < 500 and h[sbseek] == 1:
-        ratecode = 256 - h[sbseek+4]
-        if ratecode:
-            rate = int(1000000.0 / ratecode)
-    return 'voc', rate, 1, -1, 8
-
-tests.append(test_voc)
-
-
-def test_wav(h, f):
-    """WAV file"""
-    import wave
-    # 'RIFF' <len> 'WAVE' 'fmt ' <len>
-    if not h.startswith(b'RIFF') or h[8:12] != b'WAVE' or h[12:16] != b'fmt ':
-        return None
-    f.seek(0)
-    try:
-        w = wave.open(f, 'r')
-    except (EOFError, wave.Error):
-        return None
-    return ('wav', w.getframerate(), w.getnchannels(),
-                   w.getnframes(), 8*w.getsampwidth())
-
-tests.append(test_wav)
-
-
-def test_8svx(h, f):
-    """8SVX file"""
-    if not h.startswith(b'FORM') or h[8:12] != b'8SVX':
-        return None
-    # Should decode it to get #channels -- assume always 1
-    return '8svx', 0, 1, 0, 8
-
-tests.append(test_8svx)
-
-
-def test_sndt(h, f):
-    """SNDT file"""
-    if h.startswith(b'SOUND'):
-        nsamples = get_long_le(h[8:12])
-        rate = get_short_le(h[20:22])
-        return 'sndt', rate, 1, nsamples, 8
-
-tests.append(test_sndt)
-
-
-def test_sndr(h, f):
-    """SNDR file"""
-    if h.startswith(b'\0\0'):
-        rate = get_short_le(h[2:4])
-        if 4000 <= rate <= 25000:
-            return 'sndr', rate, 1, -1, 8
-
-tests.append(test_sndr)
-
-
-#-------------------------------------------#
-# Subroutines to extract numbers from bytes #
-#-------------------------------------------#
-
-def get_long_be(b):
-    return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]
-
-def get_long_le(b):
-    return (b[3] << 24) | (b[2] << 16) | (b[1] << 8) | b[0]
-
-def get_short_be(b):
-    return (b[0] << 8) | b[1]
-
-def get_short_le(b):
-    return (b[1] << 8) | b[0]
-
-
-#--------------------#
-# Small test program #
-#--------------------#
-
-def test():
-    import sys
-    recursive = 0
-    if sys.argv[1:] and sys.argv[1] == '-r':
-        del sys.argv[1:2]
-        recursive = 1
-    try:
-        if sys.argv[1:]:
-            testall(sys.argv[1:], recursive, 1)
-        else:
-            testall(['.'], recursive, 1)
-    except KeyboardInterrupt:
-        sys.stderr.write('\n[Interrupted]\n')
-        sys.exit(1)
-
-def testall(list, recursive, toplevel):
-    import sys
-    import os
-    for filename in list:
-        if os.path.isdir(filename):
-            print(filename + '/:', end=' ')
-            if recursive or toplevel:
-                print('recursing down:')
-                import glob
-                names = glob.glob(os.path.join(glob.escape(filename), '*'))
-                testall(names, recursive, 0)
-            else:
-                print('*** directory (use -r) ***')
-        else:
-            print(filename + ':', end=' ')
-            sys.stdout.flush()
-            try:
-                print(what(filename))
-            except OSError:
-                print('*** not found ***')
-
-if __name__ == '__main__':
-    test()
diff --git a/Lib/socket.py b/Lib/socket.py
index 321fcda51505c1..5f0a1f40e25b94 100644
--- a/Lib/socket.py
+++ b/Lib/socket.py
@@ -702,16 +702,15 @@ def readinto(self, b):
         self._checkReadable()
         if self._timeout_occurred:
             raise OSError("cannot read from timed out object")
-        while True:
-            try:
-                return self._sock.recv_into(b)
-            except timeout:
-                self._timeout_occurred = True
-                raise
-            except error as e:
-                if e.errno in _blocking_errnos:
-                    return None
-                raise
+        try:
+            return self._sock.recv_into(b)
+        except timeout:
+            self._timeout_occurred = True
+            raise
+        except error as e:
+            if e.errno in _blocking_errnos:
+                return None
+            raise
 
     def write(self, b):
         """Write the given bytes or bytearray object *b* to the socket
diff --git a/Lib/sqlite3/__main__.py b/Lib/sqlite3/__main__.py
index 3228dbc09d502a..b93b84384a0925 100644
--- a/Lib/sqlite3/__main__.py
+++ b/Lib/sqlite3/__main__.py
@@ -62,7 +62,7 @@ def runsource(self, source, filename="<input>", symbol="single"):
         return False
 
 
-def main():
+def main(*args):
     parser = ArgumentParser(
         description="Python sqlite3 CLI",
         prog="python -m sqlite3",
@@ -86,7 +86,7 @@ def main():
         version=f"SQLite version {sqlite3.sqlite_version}",
         help="Print underlying SQLite library version",
     )
-    args = parser.parse_args()
+    args = parser.parse_args(*args)
 
     if args.filename == ":memory:":
         db_name = "a transient in-memory database"
@@ -116,9 +116,16 @@ def main():
         else:
             # No SQL provided; start the REPL.
             console = SqliteInteractiveConsole(con)
+            try:
+                import readline
+            except ImportError:
+                pass
             console.interact(banner, exitmsg="")
     finally:
         con.close()
 
+    sys.exit(0)
 
-main()
+
+if __name__ == "__main__":
+    main(sys.argv[1:])
diff --git a/Lib/sqlite3/dump.py b/Lib/sqlite3/dump.py
index 07b9da10b920f9..ead3360ce67608 100644
--- a/Lib/sqlite3/dump.py
+++ b/Lib/sqlite3/dump.py
@@ -7,6 +7,14 @@
 # future enhancements, you should normally quote any identifier that
 # is an English language word, even if you do not have to."
 
+def _quote_name(name):
+    return '"{0}"'.format(name.replace('"', '""'))
+
+
+def _quote_value(value):
+    return "'{0}'".format(value.replace("'", "''"))
+
+
 def _iterdump(connection):
     """
     Returns an iterator to the dump of the database in an SQL text format.
@@ -16,6 +24,7 @@ def _iterdump(connection):
     directly but instead called from the Connection method, iterdump().
     """
 
+    writeable_schema = False
     cu = connection.cursor()
     yield('BEGIN TRANSACTION;')
 
@@ -31,34 +40,39 @@ def _iterdump(connection):
     sqlite_sequence = []
     for table_name, type, sql in schema_res.fetchall():
         if table_name == 'sqlite_sequence':
-            rows = cu.execute('SELECT * FROM "sqlite_sequence";').fetchall()
+            rows = cu.execute('SELECT * FROM "sqlite_sequence";')
             sqlite_sequence = ['DELETE FROM "sqlite_sequence"']
             sqlite_sequence += [
-                f'INSERT INTO "sqlite_sequence" VALUES(\'{row[0]}\',{row[1]})'
-                for row in rows
+                f'INSERT INTO "sqlite_sequence" VALUES({_quote_value(table_name)},{seq_value})'
+                for table_name, seq_value in rows.fetchall()
             ]
             continue
         elif table_name == 'sqlite_stat1':
             yield('ANALYZE "sqlite_master";')
         elif table_name.startswith('sqlite_'):
             continue
-        # NOTE: Virtual table support not implemented
-        #elif sql.startswith('CREATE VIRTUAL TABLE'):
-        #    qtable = table_name.replace("'", "''")
-        #    yield("INSERT INTO sqlite_master(type,name,tbl_name,rootpage,sql)"\
-        #        "VALUES('table','{0}','{0}',0,'{1}');".format(
-        #        qtable,
-        #        sql.replace("''")))
+        elif sql.startswith('CREATE VIRTUAL TABLE'):
+            if not writeable_schema:
+                writeable_schema = True
+                yield('PRAGMA writable_schema=ON;')
+            yield("INSERT INTO sqlite_master(type,name,tbl_name,rootpage,sql)"
+                  "VALUES('table',{0},{0},0,{1});".format(
+                      _quote_value(table_name),
+                      _quote_value(sql),
+                  ))
         else:
             yield('{0};'.format(sql))
 
         # Build the insert statement for each row of the current table
-        table_name_ident = table_name.replace('"', '""')
-        res = cu.execute('PRAGMA table_info("{0}")'.format(table_name_ident))
+        table_name_ident = _quote_name(table_name)
+        res = cu.execute(f'PRAGMA table_info({table_name_ident})')
         column_names = [str(table_info[1]) for table_info in res.fetchall()]
-        q = """SELECT 'INSERT INTO "{0}" VALUES({1})' FROM "{0}";""".format(
+        q = "SELECT 'INSERT INTO {0} VALUES('{1}')' FROM {0};".format(
             table_name_ident,
-            ",".join("""'||quote("{0}")||'""".format(col.replace('"', '""')) for col in column_names))
+            "','".join(
+                "||quote({0})||".format(_quote_name(col)) for col in column_names
+            )
+        )
         query_res = cu.execute(q)
         for row in query_res:
             yield("{0};".format(row[0]))
@@ -74,6 +88,9 @@ def _iterdump(connection):
     for name, type, sql in schema_res.fetchall():
         yield('{0};'.format(sql))
 
+    if writeable_schema:
+        yield('PRAGMA writable_schema=OFF;')
+
     # gh-79009: Yield statements concerning the sqlite_sequence table at the
     # end of the transaction.
     for row in sqlite_sequence:
diff --git a/Lib/ssl.py b/Lib/ssl.py
index 1d5873726441e4..d01484964b6895 100644
--- a/Lib/ssl.py
+++ b/Lib/ssl.py
@@ -116,7 +116,7 @@
 
 from _ssl import (
     HAS_SNI, HAS_ECDH, HAS_NPN, HAS_ALPN, HAS_SSLv2, HAS_SSLv3, HAS_TLSv1,
-    HAS_TLSv1_1, HAS_TLSv1_2, HAS_TLSv1_3
+    HAS_TLSv1_1, HAS_TLSv1_2, HAS_TLSv1_3, HAS_PSK
 )
 from _ssl import _DEFAULT_CIPHERS, _OPENSSL_API_VERSION
 
@@ -876,6 +876,31 @@ def getpeercert(self, binary_form=False):
         """
         return self._sslobj.getpeercert(binary_form)
 
+    def get_verified_chain(self):
+        """Returns verified certificate chain provided by the other
+        end of the SSL channel as a list of DER-encoded bytes.
+
+        If certificate verification was disabled method acts the same as
+        ``SSLSocket.get_unverified_chain``.
+        """
+        chain = self._sslobj.get_verified_chain()
+
+        if chain is None:
+            return []
+
+        return [cert.public_bytes(_ssl.ENCODING_DER) for cert in chain]
+
+    def get_unverified_chain(self):
+        """Returns raw certificate chain provided by the other
+        end of the SSL channel as a list of DER-encoded bytes.
+        """
+        chain = self._sslobj.get_unverified_chain()
+
+        if chain is None:
+            return []
+
+        return [cert.public_bytes(_ssl.ENCODING_DER) for cert in chain]
+
     def selected_npn_protocol(self):
         """Return the currently selected NPN protocol as a string, or ``None``
         if a next protocol was not negotiated or if NPN is not supported by one
@@ -975,7 +1000,7 @@ def _create(cls, sock, server_side=False, do_handshake_on_connect=True,
         )
         self = cls.__new__(cls, **kwargs)
         super(SSLSocket, self).__init__(**kwargs)
-        self.settimeout(sock.gettimeout())
+        sock_timeout = sock.gettimeout()
         sock.detach()
 
         self._context = context
@@ -994,9 +1019,42 @@ def _create(cls, sock, server_side=False, do_handshake_on_connect=True,
             if e.errno != errno.ENOTCONN:
                 raise
             connected = False
+            blocking = self.getblocking()
+            self.setblocking(False)
+            try:
+                # We are not connected so this is not supposed to block, but
+                # testing revealed otherwise on macOS and Windows so we do
+                # the non-blocking dance regardless. Our raise when any data
+                # is found means consuming the data is harmless.
+                notconn_pre_handshake_data = self.recv(1)
+            except OSError as e:
+                # EINVAL occurs for recv(1) on non-connected on unix sockets.
+                if e.errno not in (errno.ENOTCONN, errno.EINVAL):
+                    raise
+                notconn_pre_handshake_data = b''
+            self.setblocking(blocking)
+            if notconn_pre_handshake_data:
+                # This prevents pending data sent to the socket before it was
+                # closed from escaping to the caller who could otherwise
+                # presume it came through a successful TLS connection.
+                reason = "Closed before TLS handshake with data in recv buffer."
+                notconn_pre_handshake_data_error = SSLError(e.errno, reason)
+                # Add the SSLError attributes that _ssl.c always adds.
+                notconn_pre_handshake_data_error.reason = reason
+                notconn_pre_handshake_data_error.library = None
+                try:
+                    self.close()
+                except OSError:
+                    pass
+                try:
+                    raise notconn_pre_handshake_data_error
+                finally:
+                    # Explicitly break the reference cycle.
+                    notconn_pre_handshake_data_error = None
         else:
             connected = True
 
+        self.settimeout(sock_timeout)  # Must come after setblocking() calls.
         self._connected = connected
         if connected:
             # create the SSL object
@@ -1096,6 +1154,14 @@ def getpeercert(self, binary_form=False):
         self._check_connected()
         return self._sslobj.getpeercert(binary_form)
 
+    @_sslcopydoc
+    def get_verified_chain(self):
+        return self._sslobj.get_verified_chain()
+
+    @_sslcopydoc
+    def get_unverified_chain(self):
+        return self._sslobj.get_unverified_chain()
+
     @_sslcopydoc
     def selected_npn_protocol(self):
         self._checkClosed()
@@ -1204,10 +1270,14 @@ def recv(self, buflen=1024, flags=0):
 
     def recv_into(self, buffer, nbytes=None, flags=0):
         self._checkClosed()
-        if buffer and (nbytes is None):
-            nbytes = len(buffer)
-        elif nbytes is None:
-            nbytes = 1024
+        if nbytes is None:
+            if buffer is not None:
+                with memoryview(buffer) as view:
+                    nbytes = view.nbytes
+                if not nbytes:
+                    nbytes = 1024
+            else:
+                nbytes = 1024
         if self._sslobj is not None:
             if flags != 0:
                 raise ValueError(
diff --git a/Lib/stat.py b/Lib/stat.py
index fc024db3f4fbee..52cadbf04f6c88 100644
--- a/Lib/stat.py
+++ b/Lib/stat.py
@@ -126,6 +126,8 @@ def S_ISWHT(mode):
 
 
 _filemode_table = (
+    # File type chars according to:
+    # http://en.wikibooks.org/wiki/C_Programming/POSIX_Reference/sys/stat.h
     ((S_IFLNK,         "l"),
      (S_IFSOCK,        "s"),  # Must appear before IFREG and IFDIR as IFSOCK == IFREG | IFDIR
      (S_IFREG,         "-"),
@@ -156,13 +158,17 @@ def S_ISWHT(mode):
 def filemode(mode):
     """Convert a file's mode to a string of the form '-rwxrwxrwx'."""
     perm = []
-    for table in _filemode_table:
+    for index, table in enumerate(_filemode_table):
         for bit, char in table:
             if mode & bit == bit:
                 perm.append(char)
                 break
         else:
-            perm.append("-")
+            if index == 0:
+                # Unknown filetype
+                perm.append("?")
+            else:
+                perm.append("-")
     return "".join(perm)
 
 
diff --git a/Lib/statistics.py b/Lib/statistics.py
index 6bd214bbfe2ff5..83aaedb04515e0 100644
--- a/Lib/statistics.py
+++ b/Lib/statistics.py
@@ -137,6 +137,7 @@
 from itertools import count, groupby, repeat
 from bisect import bisect_left, bisect_right
 from math import hypot, sqrt, fabs, exp, erf, tau, log, fsum, sumprod
+from math import isfinite, isinf
 from functools import reduce
 from operator import itemgetter
 from collections import Counter, namedtuple, defaultdict
@@ -526,8 +527,10 @@ def count(iterable):
 def geometric_mean(data):
     """Convert data to floats and compute the geometric mean.
 
-    Raises a StatisticsError if the input dataset is empty,
-    if it contains a zero, or if it contains a negative value.
+    Raises a StatisticsError if the input dataset is empty
+    or if it contains a negative value.
+
+    Returns zero if the product of inputs is zero.
 
     No special efforts are made to achieve exact results.
     (However, this may change in the future.)
@@ -535,11 +538,25 @@ def geometric_mean(data):
     >>> round(geometric_mean([54, 24, 36]), 9)
     36.0
     """
-    try:
-        return exp(fmean(map(log, data)))
-    except ValueError:
-        raise StatisticsError('geometric mean requires a non-empty dataset '
-                              'containing positive numbers') from None
+    n = 0
+    found_zero = False
+    def count_positive(iterable):
+        nonlocal n, found_zero
+        for n, x in enumerate(iterable, start=1):
+            if x > 0.0 or math.isnan(x):
+                yield x
+            elif x == 0.0:
+                found_zero = True
+            else:
+                raise StatisticsError('No negative inputs allowed', x)
+    total = fsum(map(log, count_positive(data)))
+    if not n:
+        raise StatisticsError('Must have a non-empty dataset')
+    if math.isnan(total):
+        return math.nan
+    if found_zero:
+        return math.nan if total == math.inf else 0.0
+    return exp(total / n)
 
 
 def harmonic_mean(data, weights=None):
@@ -843,7 +860,9 @@ def quantiles(data, *, n=4, method='exclusive'):
     data = sorted(data)
     ld = len(data)
     if ld < 2:
-        raise StatisticsError('must have at least two data points')
+        if ld == 1:
+            return data * (n - 1)
+        raise StatisticsError('must have at least one data point')
     if method == 'inclusive':
         m = ld - 1
         result = []
@@ -1004,6 +1023,27 @@ def _mean_stdev(data):
         # Handle Nans and Infs gracefully
         return float(xbar), float(xbar) / float(ss)
 
+def _sqrtprod(x: float, y: float) -> float:
+    "Return sqrt(x * y) computed with improved accuracy and without overflow/underflow."
+    h = sqrt(x * y)
+    if not isfinite(h):
+        if isinf(h) and not isinf(x) and not isinf(y):
+            # Finite inputs overflowed, so scale down, and recompute.
+            scale = 2.0 ** -512  # sqrt(1 / sys.float_info.max)
+            return _sqrtprod(scale * x, scale * y) / scale
+        return h
+    if not h:
+        if x and y:
+            # Non-zero inputs underflowed, so scale up, and recompute.
+            # Scale:  1 / sqrt(sys.float_info.min * sys.float_info.epsilon)
+            scale = 2.0 ** 537
+            return _sqrtprod(scale * x, scale * y) / scale
+        return h
+    # Improve accuracy with a differential correction.
+    # https://www.wolframalpha.com/input/?i=Maclaurin+series+sqrt%28h**2+%2B+x%29+at+x%3D0
+    d = sumprod((x, h), (y, -h))
+    return h + d / (2.0 * h)
+
 
 # === Statistics for relations between two inputs ===
 
@@ -1083,7 +1123,7 @@ def correlation(x, y, /, *, method='linear'):
     sxx = sumprod(x, x)
     syy = sumprod(y, y)
     try:
-        return sxy / sqrt(sxx * syy)
+        return sxy / _sqrtprod(sxx, syy)
     except ZeroDivisionError:
         raise StatisticsError('at least one of the inputs is constant')
 
@@ -1113,7 +1153,7 @@ def linear_regression(x, y, /, *, proportional=False):
     >>> noise = NormalDist().samples(5, seed=42)
     >>> y = [3 * x[i] + 2 + noise[i] for i in range(5)]
     >>> linear_regression(x, y)  #doctest: +ELLIPSIS
-    LinearRegression(slope=3.09078914170..., intercept=1.75684970486...)
+    LinearRegression(slope=3.17495..., intercept=1.00925...)
 
     If *proportional* is true, the independent variable *x* and the
     dependent variable *y* are assumed to be directly proportional.
@@ -1126,7 +1166,7 @@ def linear_regression(x, y, /, *, proportional=False):
 
     >>> y = [3 * x[i] + noise[i] for i in range(5)]
     >>> linear_regression(x, y, proportional=True)  #doctest: +ELLIPSIS
-    LinearRegression(slope=3.02447542484..., intercept=0.0)
+    LinearRegression(slope=2.90475..., intercept=0.0)
 
     """
     n = len(x)
@@ -1257,9 +1297,11 @@ def from_samples(cls, data):
 
     def samples(self, n, *, seed=None):
         "Generate *n* samples for a given mean and standard deviation."
-        gauss = random.gauss if seed is None else random.Random(seed).gauss
-        mu, sigma = self._mu, self._sigma
-        return [gauss(mu, sigma) for _ in repeat(None, n)]
+        rnd = random.random if seed is None else random.Random(seed).random
+        inv_cdf = _normal_dist_inv_cdf
+        mu = self._mu
+        sigma = self._sigma
+        return [inv_cdf(rnd(), mu, sigma) for _ in repeat(None, n)]
 
     def pdf(self, x):
         "Probability density function.  P(x <= X < x+dx) / dx"
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 1f203bd00d3500..d6edd1a9807d1b 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -74,8 +74,8 @@
 else:
     _mswindows = True
 
-# wasm32-emscripten and wasm32-wasi do not support processes
-_can_fork_exec = sys.platform not in {"emscripten", "wasi"}
+# some platforms do not support subprocesses
+_can_fork_exec = sys.platform not in {"emscripten", "wasi", "ios", "tvos", "watchos"}
 
 if _mswindows:
     import _winapi
@@ -103,18 +103,22 @@
     if _can_fork_exec:
         from _posixsubprocess import fork_exec as _fork_exec
         # used in methods that are called by __del__
-        _waitpid = os.waitpid
-        _waitstatus_to_exitcode = os.waitstatus_to_exitcode
-        _WIFSTOPPED = os.WIFSTOPPED
-        _WSTOPSIG = os.WSTOPSIG
-        _WNOHANG = os.WNOHANG
+        class _del_safe:
+            waitpid = os.waitpid
+            waitstatus_to_exitcode = os.waitstatus_to_exitcode
+            WIFSTOPPED = os.WIFSTOPPED
+            WSTOPSIG = os.WSTOPSIG
+            WNOHANG = os.WNOHANG
+            ECHILD = errno.ECHILD
     else:
-        _fork_exec = None
-        _waitpid = None
-        _waitstatus_to_exitcode = None
-        _WIFSTOPPED = None
-        _WSTOPSIG = None
-        _WNOHANG = None
+        class _del_safe:
+            waitpid = None
+            waitstatus_to_exitcode = None
+            WIFSTOPPED = None
+            WSTOPSIG = None
+            WNOHANG = None
+            ECHILD = errno.ECHILD
+
     import select
     import selectors
 
@@ -346,7 +350,7 @@ def _args_from_interpreter_flags():
     if dev_mode:
         args.extend(('-X', 'dev'))
     for opt in ('faulthandler', 'tracemalloc', 'importtime',
-                'showrefcount', 'utf8'):
+                'frozen_modules', 'showrefcount', 'utf8'):
         if opt in xoptions:
             value = xoptions[opt]
             if value is True:
@@ -872,37 +876,6 @@ def __init__(self, args, bufsize=-1, executable=None,
                                   'and universal_newlines are supplied but '
                                   'different. Pass one or the other.')
 
-        # Input and output objects. The general principle is like
-        # this:
-        #
-        # Parent                   Child
-        # ------                   -----
-        # p2cwrite   ---stdin--->  p2cread
-        # c2pread    <--stdout---  c2pwrite
-        # errread    <--stderr---  errwrite
-        #
-        # On POSIX, the child objects are file descriptors.  On
-        # Windows, these are Windows file handles.  The parent objects
-        # are file descriptors on both platforms.  The parent objects
-        # are -1 when not using PIPEs. The child objects are -1
-        # when not redirecting.
-
-        (p2cread, p2cwrite,
-         c2pread, c2pwrite,
-         errread, errwrite) = self._get_handles(stdin, stdout, stderr)
-
-        # We wrap OS handles *before* launching the child, otherwise a
-        # quickly terminating child could make our fds unwrappable
-        # (see #8458).
-
-        if _mswindows:
-            if p2cwrite != -1:
-                p2cwrite = msvcrt.open_osfhandle(p2cwrite.Detach(), 0)
-            if c2pread != -1:
-                c2pread = msvcrt.open_osfhandle(c2pread.Detach(), 0)
-            if errread != -1:
-                errread = msvcrt.open_osfhandle(errread.Detach(), 0)
-
         self.text_mode = encoding or errors or text or universal_newlines
         if self.text_mode and encoding is None:
             self.encoding = encoding = _text_encoding()
@@ -1003,6 +976,39 @@ def __init__(self, args, bufsize=-1, executable=None,
             if uid < 0:
                 raise ValueError(f"User ID cannot be negative, got {uid}")
 
+        # Input and output objects. The general principle is like
+        # this:
+        #
+        # Parent                   Child
+        # ------                   -----
+        # p2cwrite   ---stdin--->  p2cread
+        # c2pread    <--stdout---  c2pwrite
+        # errread    <--stderr---  errwrite
+        #
+        # On POSIX, the child objects are file descriptors.  On
+        # Windows, these are Windows file handles.  The parent objects
+        # are file descriptors on both platforms.  The parent objects
+        # are -1 when not using PIPEs. The child objects are -1
+        # when not redirecting.
+
+        (p2cread, p2cwrite,
+         c2pread, c2pwrite,
+         errread, errwrite) = self._get_handles(stdin, stdout, stderr)
+
+        # From here on, raising exceptions may cause file descriptor leakage
+
+        # We wrap OS handles *before* launching the child, otherwise a
+        # quickly terminating child could make our fds unwrappable
+        # (see #8458).
+
+        if _mswindows:
+            if p2cwrite != -1:
+                p2cwrite = msvcrt.open_osfhandle(p2cwrite.Detach(), 0)
+            if c2pread != -1:
+                c2pread = msvcrt.open_osfhandle(c2pread.Detach(), 0)
+            if errread != -1:
+                errread = msvcrt.open_osfhandle(errread.Detach(), 0)
+
         try:
             if p2cwrite != -1:
                 self.stdin = io.open(p2cwrite, 'wb', bufsize)
@@ -1306,6 +1312,26 @@ def _close_pipe_fds(self,
         # Prevent a double close of these handles/fds from __init__ on error.
         self._closed_child_pipe_fds = True
 
+    @contextlib.contextmanager
+    def _on_error_fd_closer(self):
+        """Helper to ensure file descriptors opened in _get_handles are closed"""
+        to_close = []
+        try:
+            yield to_close
+        except:
+            if hasattr(self, '_devnull'):
+                to_close.append(self._devnull)
+                del self._devnull
+            for fd in to_close:
+                try:
+                    if _mswindows and isinstance(fd, Handle):
+                        fd.Close()
+                    else:
+                        os.close(fd)
+                except OSError:
+                    pass
+            raise
+
     if _mswindows:
         #
         # Windows methods
@@ -1321,61 +1347,68 @@ def _get_handles(self, stdin, stdout, stderr):
             c2pread, c2pwrite = -1, -1
             errread, errwrite = -1, -1
 
-            if stdin is None:
-                p2cread = _winapi.GetStdHandle(_winapi.STD_INPUT_HANDLE)
-                if p2cread is None:
-                    p2cread, _ = _winapi.CreatePipe(None, 0)
-                    p2cread = Handle(p2cread)
-                    _winapi.CloseHandle(_)
-            elif stdin == PIPE:
-                p2cread, p2cwrite = _winapi.CreatePipe(None, 0)
-                p2cread, p2cwrite = Handle(p2cread), Handle(p2cwrite)
-            elif stdin == DEVNULL:
-                p2cread = msvcrt.get_osfhandle(self._get_devnull())
-            elif isinstance(stdin, int):
-                p2cread = msvcrt.get_osfhandle(stdin)
-            else:
-                # Assuming file-like object
-                p2cread = msvcrt.get_osfhandle(stdin.fileno())
-            p2cread = self._make_inheritable(p2cread)
-
-            if stdout is None:
-                c2pwrite = _winapi.GetStdHandle(_winapi.STD_OUTPUT_HANDLE)
-                if c2pwrite is None:
-                    _, c2pwrite = _winapi.CreatePipe(None, 0)
-                    c2pwrite = Handle(c2pwrite)
-                    _winapi.CloseHandle(_)
-            elif stdout == PIPE:
-                c2pread, c2pwrite = _winapi.CreatePipe(None, 0)
-                c2pread, c2pwrite = Handle(c2pread), Handle(c2pwrite)
-            elif stdout == DEVNULL:
-                c2pwrite = msvcrt.get_osfhandle(self._get_devnull())
-            elif isinstance(stdout, int):
-                c2pwrite = msvcrt.get_osfhandle(stdout)
-            else:
-                # Assuming file-like object
-                c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
-            c2pwrite = self._make_inheritable(c2pwrite)
-
-            if stderr is None:
-                errwrite = _winapi.GetStdHandle(_winapi.STD_ERROR_HANDLE)
-                if errwrite is None:
-                    _, errwrite = _winapi.CreatePipe(None, 0)
-                    errwrite = Handle(errwrite)
-                    _winapi.CloseHandle(_)
-            elif stderr == PIPE:
-                errread, errwrite = _winapi.CreatePipe(None, 0)
-                errread, errwrite = Handle(errread), Handle(errwrite)
-            elif stderr == STDOUT:
-                errwrite = c2pwrite
-            elif stderr == DEVNULL:
-                errwrite = msvcrt.get_osfhandle(self._get_devnull())
-            elif isinstance(stderr, int):
-                errwrite = msvcrt.get_osfhandle(stderr)
-            else:
-                # Assuming file-like object
-                errwrite = msvcrt.get_osfhandle(stderr.fileno())
-            errwrite = self._make_inheritable(errwrite)
+            with self._on_error_fd_closer() as err_close_fds:
+                if stdin is None:
+                    p2cread = _winapi.GetStdHandle(_winapi.STD_INPUT_HANDLE)
+                    if p2cread is None:
+                        p2cread, _ = _winapi.CreatePipe(None, 0)
+                        p2cread = Handle(p2cread)
+                        err_close_fds.append(p2cread)
+                        _winapi.CloseHandle(_)
+                elif stdin == PIPE:
+                    p2cread, p2cwrite = _winapi.CreatePipe(None, 0)
+                    p2cread, p2cwrite = Handle(p2cread), Handle(p2cwrite)
+                    err_close_fds.extend((p2cread, p2cwrite))
+                elif stdin == DEVNULL:
+                    p2cread = msvcrt.get_osfhandle(self._get_devnull())
+                elif isinstance(stdin, int):
+                    p2cread = msvcrt.get_osfhandle(stdin)
+                else:
+                    # Assuming file-like object
+                    p2cread = msvcrt.get_osfhandle(stdin.fileno())
+                p2cread = self._make_inheritable(p2cread)
+
+                if stdout is None:
+                    c2pwrite = _winapi.GetStdHandle(_winapi.STD_OUTPUT_HANDLE)
+                    if c2pwrite is None:
+                        _, c2pwrite = _winapi.CreatePipe(None, 0)
+                        c2pwrite = Handle(c2pwrite)
+                        err_close_fds.append(c2pwrite)
+                        _winapi.CloseHandle(_)
+                elif stdout == PIPE:
+                    c2pread, c2pwrite = _winapi.CreatePipe(None, 0)
+                    c2pread, c2pwrite = Handle(c2pread), Handle(c2pwrite)
+                    err_close_fds.extend((c2pread, c2pwrite))
+                elif stdout == DEVNULL:
+                    c2pwrite = msvcrt.get_osfhandle(self._get_devnull())
+                elif isinstance(stdout, int):
+                    c2pwrite = msvcrt.get_osfhandle(stdout)
+                else:
+                    # Assuming file-like object
+                    c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
+                c2pwrite = self._make_inheritable(c2pwrite)
+
+                if stderr is None:
+                    errwrite = _winapi.GetStdHandle(_winapi.STD_ERROR_HANDLE)
+                    if errwrite is None:
+                        _, errwrite = _winapi.CreatePipe(None, 0)
+                        errwrite = Handle(errwrite)
+                        err_close_fds.append(errwrite)
+                        _winapi.CloseHandle(_)
+                elif stderr == PIPE:
+                    errread, errwrite = _winapi.CreatePipe(None, 0)
+                    errread, errwrite = Handle(errread), Handle(errwrite)
+                    err_close_fds.extend((errread, errwrite))
+                elif stderr == STDOUT:
+                    errwrite = c2pwrite
+                elif stderr == DEVNULL:
+                    errwrite = msvcrt.get_osfhandle(self._get_devnull())
+                elif isinstance(stderr, int):
+                    errwrite = msvcrt.get_osfhandle(stderr)
+                else:
+                    # Assuming file-like object
+                    errwrite = msvcrt.get_osfhandle(stderr.fileno())
+                errwrite = self._make_inheritable(errwrite)
 
             return (p2cread, p2cwrite,
                     c2pread, c2pwrite,
@@ -1662,52 +1695,56 @@ def _get_handles(self, stdin, stdout, stderr):
             c2pread, c2pwrite = -1, -1
             errread, errwrite = -1, -1
 
-            if stdin is None:
-                pass
-            elif stdin == PIPE:
-                p2cread, p2cwrite = os.pipe()
-                if self.pipesize > 0 and hasattr(fcntl, "F_SETPIPE_SZ"):
-                    fcntl.fcntl(p2cwrite, fcntl.F_SETPIPE_SZ, self.pipesize)
-            elif stdin == DEVNULL:
-                p2cread = self._get_devnull()
-            elif isinstance(stdin, int):
-                p2cread = stdin
-            else:
-                # Assuming file-like object
-                p2cread = stdin.fileno()
+            with self._on_error_fd_closer() as err_close_fds:
+                if stdin is None:
+                    pass
+                elif stdin == PIPE:
+                    p2cread, p2cwrite = os.pipe()
+                    err_close_fds.extend((p2cread, p2cwrite))
+                    if self.pipesize > 0 and hasattr(fcntl, "F_SETPIPE_SZ"):
+                        fcntl.fcntl(p2cwrite, fcntl.F_SETPIPE_SZ, self.pipesize)
+                elif stdin == DEVNULL:
+                    p2cread = self._get_devnull()
+                elif isinstance(stdin, int):
+                    p2cread = stdin
+                else:
+                    # Assuming file-like object
+                    p2cread = stdin.fileno()
 
-            if stdout is None:
-                pass
-            elif stdout == PIPE:
-                c2pread, c2pwrite = os.pipe()
-                if self.pipesize > 0 and hasattr(fcntl, "F_SETPIPE_SZ"):
-                    fcntl.fcntl(c2pwrite, fcntl.F_SETPIPE_SZ, self.pipesize)
-            elif stdout == DEVNULL:
-                c2pwrite = self._get_devnull()
-            elif isinstance(stdout, int):
-                c2pwrite = stdout
-            else:
-                # Assuming file-like object
-                c2pwrite = stdout.fileno()
+                if stdout is None:
+                    pass
+                elif stdout == PIPE:
+                    c2pread, c2pwrite = os.pipe()
+                    err_close_fds.extend((c2pread, c2pwrite))
+                    if self.pipesize > 0 and hasattr(fcntl, "F_SETPIPE_SZ"):
+                        fcntl.fcntl(c2pwrite, fcntl.F_SETPIPE_SZ, self.pipesize)
+                elif stdout == DEVNULL:
+                    c2pwrite = self._get_devnull()
+                elif isinstance(stdout, int):
+                    c2pwrite = stdout
+                else:
+                    # Assuming file-like object
+                    c2pwrite = stdout.fileno()
 
-            if stderr is None:
-                pass
-            elif stderr == PIPE:
-                errread, errwrite = os.pipe()
-                if self.pipesize > 0 and hasattr(fcntl, "F_SETPIPE_SZ"):
-                    fcntl.fcntl(errwrite, fcntl.F_SETPIPE_SZ, self.pipesize)
-            elif stderr == STDOUT:
-                if c2pwrite != -1:
-                    errwrite = c2pwrite
-                else: # child's stdout is not set, use parent's stdout
-                    errwrite = sys.__stdout__.fileno()
-            elif stderr == DEVNULL:
-                errwrite = self._get_devnull()
-            elif isinstance(stderr, int):
-                errwrite = stderr
-            else:
-                # Assuming file-like object
-                errwrite = stderr.fileno()
+                if stderr is None:
+                    pass
+                elif stderr == PIPE:
+                    errread, errwrite = os.pipe()
+                    err_close_fds.extend((errread, errwrite))
+                    if self.pipesize > 0 and hasattr(fcntl, "F_SETPIPE_SZ"):
+                        fcntl.fcntl(errwrite, fcntl.F_SETPIPE_SZ, self.pipesize)
+                elif stderr == STDOUT:
+                    if c2pwrite != -1:
+                        errwrite = c2pwrite
+                    else: # child's stdout is not set, use parent's stdout
+                        errwrite = sys.__stdout__.fileno()
+                elif stderr == DEVNULL:
+                    errwrite = self._get_devnull()
+                elif isinstance(stderr, int):
+                    errwrite = stderr
+                else:
+                    # Assuming file-like object
+                    errwrite = stderr.fileno()
 
             return (p2cread, p2cwrite,
                     c2pread, c2pwrite,
@@ -1918,20 +1955,16 @@ def _execute_child(self, args, executable, preexec_fn, close_fds,
                 raise child_exception_type(err_msg)
 
 
-        def _handle_exitstatus(self, sts,
-                               _waitstatus_to_exitcode=_waitstatus_to_exitcode,
-                               _WIFSTOPPED=_WIFSTOPPED,
-                               _WSTOPSIG=_WSTOPSIG):
+        def _handle_exitstatus(self, sts, _del_safe=_del_safe):
             """All callers to this function MUST hold self._waitpid_lock."""
             # This method is called (indirectly) by __del__, so it cannot
             # refer to anything outside of its local scope.
-            if _WIFSTOPPED(sts):
-                self.returncode = -_WSTOPSIG(sts)
+            if _del_safe.WIFSTOPPED(sts):
+                self.returncode = -_del_safe.WSTOPSIG(sts)
             else:
-                self.returncode = _waitstatus_to_exitcode(sts)
+                self.returncode = _del_safe.waitstatus_to_exitcode(sts)
 
-        def _internal_poll(self, _deadstate=None, _waitpid=_waitpid,
-                _WNOHANG=_WNOHANG, _ECHILD=errno.ECHILD):
+        def _internal_poll(self, _deadstate=None, _del_safe=_del_safe):
             """Check if child process has terminated.  Returns returncode
             attribute.
 
@@ -1947,13 +1980,13 @@ def _internal_poll(self, _deadstate=None, _waitpid=_waitpid,
                 try:
                     if self.returncode is not None:
                         return self.returncode  # Another thread waited.
-                    pid, sts = _waitpid(self.pid, _WNOHANG)
+                    pid, sts = _del_safe.waitpid(self.pid, _del_safe.WNOHANG)
                     if pid == self.pid:
                         self._handle_exitstatus(sts)
                 except OSError as e:
                     if _deadstate is not None:
                         self.returncode = _deadstate
-                    elif e.errno == _ECHILD:
+                    elif e.errno == _del_safe.ECHILD:
                         # This happens if SIGCLD is set to be ignored or
                         # waiting for child processes has otherwise been
                         # disabled for our process.  This child is dead, we
diff --git a/Lib/sunau.py b/Lib/sunau.py
deleted file mode 100644
index c6caab959abd0c..00000000000000
--- a/Lib/sunau.py
+++ /dev/null
@@ -1,533 +0,0 @@
-"""Stuff to parse Sun and NeXT audio files.
-
-An audio file consists of a header followed by the data.  The structure
-of the header is as follows.
-
-        +---------------+
-        | magic word    |
-        +---------------+
-        | header size   |
-        +---------------+
-        | data size     |
-        +---------------+
-        | encoding      |
-        +---------------+
-        | sample rate   |
-        +---------------+
-        | # of channels |
-        +---------------+
-        | info          |
-        |               |
-        +---------------+
-
-The magic word consists of the 4 characters '.snd'.  Apart from the
-info field, all header fields are 4 bytes in size.  They are all
-32-bit unsigned integers encoded in big-endian byte order.
-
-The header size really gives the start of the data.
-The data size is the physical size of the data.  From the other
-parameters the number of frames can be calculated.
-The encoding gives the way in which audio samples are encoded.
-Possible values are listed below.
-The info field currently consists of an ASCII string giving a
-human-readable description of the audio file.  The info field is
-padded with NUL bytes to the header size.
-
-Usage.
-
-Reading audio files:
-        f = sunau.open(file, 'r')
-where file is either the name of a file or an open file pointer.
-The open file pointer must have methods read(), seek(), and close().
-When the setpos() and rewind() methods are not used, the seek()
-method is not  necessary.
-
-This returns an instance of a class with the following public methods:
-        getnchannels()  -- returns number of audio channels (1 for
-                           mono, 2 for stereo)
-        getsampwidth()  -- returns sample width in bytes
-        getframerate()  -- returns sampling frequency
-        getnframes()    -- returns number of audio frames
-        getcomptype()   -- returns compression type ('NONE' or 'ULAW')
-        getcompname()   -- returns human-readable version of
-                           compression type ('not compressed' matches 'NONE')
-        getparams()     -- returns a namedtuple consisting of all of the
-                           above in the above order
-        getmarkers()    -- returns None (for compatibility with the
-                           aifc module)
-        getmark(id)     -- raises an error since the mark does not
-                           exist (for compatibility with the aifc module)
-        readframes(n)   -- returns at most n frames of audio
-        rewind()        -- rewind to the beginning of the audio stream
-        setpos(pos)     -- seek to the specified position
-        tell()          -- return the current position
-        close()         -- close the instance (make it unusable)
-The position returned by tell() and the position given to setpos()
-are compatible and have nothing to do with the actual position in the
-file.
-The close() method is called automatically when the class instance
-is destroyed.
-
-Writing audio files:
-        f = sunau.open(file, 'w')
-where file is either the name of a file or an open file pointer.
-The open file pointer must have methods write(), tell(), seek(), and
-close().
-
-This returns an instance of a class with the following public methods:
-        setnchannels(n) -- set the number of channels
-        setsampwidth(n) -- set the sample width
-        setframerate(n) -- set the frame rate
-        setnframes(n)   -- set the number of frames
-        setcomptype(type, name)
-                        -- set the compression type and the
-                           human-readable compression type
-        setparams(tuple)-- set all parameters at once
-        tell()          -- return current position in output file
-        writeframesraw(data)
-                        -- write audio frames without pathing up the
-                           file header
-        writeframes(data)
-                        -- write audio frames and patch up the file header
-        close()         -- patch up the file header and close the
-                           output file
-You should set the parameters before the first writeframesraw or
-writeframes.  The total number of frames does not need to be set,
-but when it is set to the correct value, the header does not have to
-be patched up.
-It is best to first set all parameters, perhaps possibly the
-compression type, and then write audio frames using writeframesraw.
-When all frames have been written, either call writeframes(b'') or
-close() to patch up the sizes in the header.
-The close() method is called automatically when the class instance
-is destroyed.
-"""
-
-from collections import namedtuple
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-
-_sunau_params = namedtuple('_sunau_params',
-                           'nchannels sampwidth framerate nframes comptype compname')
-
-# from <multimedia/audio_filehdr.h>
-AUDIO_FILE_MAGIC = 0x2e736e64
-AUDIO_FILE_ENCODING_MULAW_8 = 1
-AUDIO_FILE_ENCODING_LINEAR_8 = 2
-AUDIO_FILE_ENCODING_LINEAR_16 = 3
-AUDIO_FILE_ENCODING_LINEAR_24 = 4
-AUDIO_FILE_ENCODING_LINEAR_32 = 5
-AUDIO_FILE_ENCODING_FLOAT = 6
-AUDIO_FILE_ENCODING_DOUBLE = 7
-AUDIO_FILE_ENCODING_ADPCM_G721 = 23
-AUDIO_FILE_ENCODING_ADPCM_G722 = 24
-AUDIO_FILE_ENCODING_ADPCM_G723_3 = 25
-AUDIO_FILE_ENCODING_ADPCM_G723_5 = 26
-AUDIO_FILE_ENCODING_ALAW_8 = 27
-
-# from <multimedia/audio_hdr.h>
-AUDIO_UNKNOWN_SIZE = 0xFFFFFFFF        # ((unsigned)(~0))
-
-_simple_encodings = [AUDIO_FILE_ENCODING_MULAW_8,
-                     AUDIO_FILE_ENCODING_LINEAR_8,
-                     AUDIO_FILE_ENCODING_LINEAR_16,
-                     AUDIO_FILE_ENCODING_LINEAR_24,
-                     AUDIO_FILE_ENCODING_LINEAR_32,
-                     AUDIO_FILE_ENCODING_ALAW_8]
-
-class Error(Exception):
-    pass
-
-def _read_u32(file):
-    x = 0
-    for i in range(4):
-        byte = file.read(1)
-        if not byte:
-            raise EOFError
-        x = x*256 + ord(byte)
-    return x
-
-def _write_u32(file, x):
-    data = []
-    for i in range(4):
-        d, m = divmod(x, 256)
-        data.insert(0, int(m))
-        x = d
-    file.write(bytes(data))
-
-class Au_read:
-
-    def __init__(self, f):
-        if isinstance(f, str):
-            import builtins
-            f = builtins.open(f, 'rb')
-            self._opened = True
-        else:
-            self._opened = False
-        self.initfp(f)
-
-    def __del__(self):
-        if self._file:
-            self.close()
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        self.close()
-
-    def initfp(self, file):
-        self._file = file
-        self._soundpos = 0
-        magic = int(_read_u32(file))
-        if magic != AUDIO_FILE_MAGIC:
-            raise Error('bad magic number')
-        self._hdr_size = int(_read_u32(file))
-        if self._hdr_size < 24:
-            raise Error('header size too small')
-        if self._hdr_size > 100:
-            raise Error('header size ridiculously large')
-        self._data_size = _read_u32(file)
-        if self._data_size != AUDIO_UNKNOWN_SIZE:
-            self._data_size = int(self._data_size)
-        self._encoding = int(_read_u32(file))
-        if self._encoding not in _simple_encodings:
-            raise Error('encoding not (yet) supported')
-        if self._encoding in (AUDIO_FILE_ENCODING_MULAW_8,
-                  AUDIO_FILE_ENCODING_ALAW_8):
-            self._sampwidth = 2
-            self._framesize = 1
-        elif self._encoding == AUDIO_FILE_ENCODING_LINEAR_8:
-            self._framesize = self._sampwidth = 1
-        elif self._encoding == AUDIO_FILE_ENCODING_LINEAR_16:
-            self._framesize = self._sampwidth = 2
-        elif self._encoding == AUDIO_FILE_ENCODING_LINEAR_24:
-            self._framesize = self._sampwidth = 3
-        elif self._encoding == AUDIO_FILE_ENCODING_LINEAR_32:
-            self._framesize = self._sampwidth = 4
-        else:
-            raise Error('unknown encoding')
-        self._framerate = int(_read_u32(file))
-        self._nchannels = int(_read_u32(file))
-        if not self._nchannels:
-            raise Error('bad # of channels')
-        self._framesize = self._framesize * self._nchannels
-        if self._hdr_size > 24:
-            self._info = file.read(self._hdr_size - 24)
-            self._info, _, _ = self._info.partition(b'\0')
-        else:
-            self._info = b''
-        try:
-            self._data_pos = file.tell()
-        except (AttributeError, OSError):
-            self._data_pos = None
-
-    def getfp(self):
-        return self._file
-
-    def getnchannels(self):
-        return self._nchannels
-
-    def getsampwidth(self):
-        return self._sampwidth
-
-    def getframerate(self):
-        return self._framerate
-
-    def getnframes(self):
-        if self._data_size == AUDIO_UNKNOWN_SIZE:
-            return AUDIO_UNKNOWN_SIZE
-        if self._encoding in _simple_encodings:
-            return self._data_size // self._framesize
-        return 0                # XXX--must do some arithmetic here
-
-    def getcomptype(self):
-        if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
-            return 'ULAW'
-        elif self._encoding == AUDIO_FILE_ENCODING_ALAW_8:
-            return 'ALAW'
-        else:
-            return 'NONE'
-
-    def getcompname(self):
-        if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
-            return 'CCITT G.711 u-law'
-        elif self._encoding == AUDIO_FILE_ENCODING_ALAW_8:
-            return 'CCITT G.711 A-law'
-        else:
-            return 'not compressed'
-
-    def getparams(self):
-        return _sunau_params(self.getnchannels(), self.getsampwidth(),
-                  self.getframerate(), self.getnframes(),
-                  self.getcomptype(), self.getcompname())
-
-    def getmarkers(self):
-        return None
-
-    def getmark(self, id):
-        raise Error('no marks')
-
-    def readframes(self, nframes):
-        if self._encoding in _simple_encodings:
-            if nframes == AUDIO_UNKNOWN_SIZE:
-                data = self._file.read()
-            else:
-                data = self._file.read(nframes * self._framesize)
-            self._soundpos += len(data) // self._framesize
-            if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
-                with warnings.catch_warnings():
-                    warnings.simplefilter('ignore', category=DeprecationWarning)
-                    import audioop
-                data = audioop.ulaw2lin(data, self._sampwidth)
-            return data
-        return None             # XXX--not implemented yet
-
-    def rewind(self):
-        if self._data_pos is None:
-            raise OSError('cannot seek')
-        self._file.seek(self._data_pos)
-        self._soundpos = 0
-
-    def tell(self):
-        return self._soundpos
-
-    def setpos(self, pos):
-        if pos < 0 or pos > self.getnframes():
-            raise Error('position not in range')
-        if self._data_pos is None:
-            raise OSError('cannot seek')
-        self._file.seek(self._data_pos + pos * self._framesize)
-        self._soundpos = pos
-
-    def close(self):
-        file = self._file
-        if file:
-            self._file = None
-            if self._opened:
-                file.close()
-
-class Au_write:
-
-    def __init__(self, f):
-        if isinstance(f, str):
-            import builtins
-            f = builtins.open(f, 'wb')
-            self._opened = True
-        else:
-            self._opened = False
-        self.initfp(f)
-
-    def __del__(self):
-        if self._file:
-            self.close()
-        self._file = None
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        self.close()
-
-    def initfp(self, file):
-        self._file = file
-        self._framerate = 0
-        self._nchannels = 0
-        self._sampwidth = 0
-        self._framesize = 0
-        self._nframes = AUDIO_UNKNOWN_SIZE
-        self._nframeswritten = 0
-        self._datawritten = 0
-        self._datalength = 0
-        self._info = b''
-        self._comptype = 'ULAW' # default is U-law
-
-    def setnchannels(self, nchannels):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if nchannels not in (1, 2, 4):
-            raise Error('only 1, 2, or 4 channels supported')
-        self._nchannels = nchannels
-
-    def getnchannels(self):
-        if not self._nchannels:
-            raise Error('number of channels not set')
-        return self._nchannels
-
-    def setsampwidth(self, sampwidth):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if sampwidth not in (1, 2, 3, 4):
-            raise Error('bad sample width')
-        self._sampwidth = sampwidth
-
-    def getsampwidth(self):
-        if not self._framerate:
-            raise Error('sample width not specified')
-        return self._sampwidth
-
-    def setframerate(self, framerate):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        self._framerate = framerate
-
-    def getframerate(self):
-        if not self._framerate:
-            raise Error('frame rate not set')
-        return self._framerate
-
-    def setnframes(self, nframes):
-        if self._nframeswritten:
-            raise Error('cannot change parameters after starting to write')
-        if nframes < 0:
-            raise Error('# of frames cannot be negative')
-        self._nframes = nframes
-
-    def getnframes(self):
-        return self._nframeswritten
-
-    def setcomptype(self, type, name):
-        if type in ('NONE', 'ULAW'):
-            self._comptype = type
-        else:
-            raise Error('unknown compression type')
-
-    def getcomptype(self):
-        return self._comptype
-
-    def getcompname(self):
-        if self._comptype == 'ULAW':
-            return 'CCITT G.711 u-law'
-        elif self._comptype == 'ALAW':
-            return 'CCITT G.711 A-law'
-        else:
-            return 'not compressed'
-
-    def setparams(self, params):
-        nchannels, sampwidth, framerate, nframes, comptype, compname = params
-        self.setnchannels(nchannels)
-        self.setsampwidth(sampwidth)
-        self.setframerate(framerate)
-        self.setnframes(nframes)
-        self.setcomptype(comptype, compname)
-
-    def getparams(self):
-        return _sunau_params(self.getnchannels(), self.getsampwidth(),
-                  self.getframerate(), self.getnframes(),
-                  self.getcomptype(), self.getcompname())
-
-    def tell(self):
-        return self._nframeswritten
-
-    def writeframesraw(self, data):
-        if not isinstance(data, (bytes, bytearray)):
-            data = memoryview(data).cast('B')
-        self._ensure_header_written()
-        if self._comptype == 'ULAW':
-            with warnings.catch_warnings():
-                warnings.simplefilter('ignore', category=DeprecationWarning)
-                import audioop
-            data = audioop.lin2ulaw(data, self._sampwidth)
-        nframes = len(data) // self._framesize
-        self._file.write(data)
-        self._nframeswritten = self._nframeswritten + nframes
-        self._datawritten = self._datawritten + len(data)
-
-    def writeframes(self, data):
-        self.writeframesraw(data)
-        if self._nframeswritten != self._nframes or \
-                  self._datalength != self._datawritten:
-            self._patchheader()
-
-    def close(self):
-        if self._file:
-            try:
-                self._ensure_header_written()
-                if self._nframeswritten != self._nframes or \
-                        self._datalength != self._datawritten:
-                    self._patchheader()
-                self._file.flush()
-            finally:
-                file = self._file
-                self._file = None
-                if self._opened:
-                    file.close()
-
-    #
-    # private methods
-    #
-
-    def _ensure_header_written(self):
-        if not self._nframeswritten:
-            if not self._nchannels:
-                raise Error('# of channels not specified')
-            if not self._sampwidth:
-                raise Error('sample width not specified')
-            if not self._framerate:
-                raise Error('frame rate not specified')
-            self._write_header()
-
-    def _write_header(self):
-        if self._comptype == 'NONE':
-            if self._sampwidth == 1:
-                encoding = AUDIO_FILE_ENCODING_LINEAR_8
-                self._framesize = 1
-            elif self._sampwidth == 2:
-                encoding = AUDIO_FILE_ENCODING_LINEAR_16
-                self._framesize = 2
-            elif self._sampwidth == 3:
-                encoding = AUDIO_FILE_ENCODING_LINEAR_24
-                self._framesize = 3
-            elif self._sampwidth == 4:
-                encoding = AUDIO_FILE_ENCODING_LINEAR_32
-                self._framesize = 4
-            else:
-                raise Error('internal error')
-        elif self._comptype == 'ULAW':
-            encoding = AUDIO_FILE_ENCODING_MULAW_8
-            self._framesize = 1
-        else:
-            raise Error('internal error')
-        self._framesize = self._framesize * self._nchannels
-        _write_u32(self._file, AUDIO_FILE_MAGIC)
-        header_size = 25 + len(self._info)
-        header_size = (header_size + 7) & ~7
-        _write_u32(self._file, header_size)
-        if self._nframes == AUDIO_UNKNOWN_SIZE:
-            length = AUDIO_UNKNOWN_SIZE
-        else:
-            length = self._nframes * self._framesize
-        try:
-            self._form_length_pos = self._file.tell()
-        except (AttributeError, OSError):
-            self._form_length_pos = None
-        _write_u32(self._file, length)
-        self._datalength = length
-        _write_u32(self._file, encoding)
-        _write_u32(self._file, self._framerate)
-        _write_u32(self._file, self._nchannels)
-        self._file.write(self._info)
-        self._file.write(b'\0'*(header_size - len(self._info) - 24))
-
-    def _patchheader(self):
-        if self._form_length_pos is None:
-            raise OSError('cannot seek')
-        self._file.seek(self._form_length_pos)
-        _write_u32(self._file, self._datawritten)
-        self._datalength = self._datawritten
-        self._file.seek(0, 2)
-
-def open(f, mode=None):
-    if mode is None:
-        if hasattr(f, 'mode'):
-            mode = f.mode
-        else:
-            mode = 'rb'
-    if mode in ('r', 'rb'):
-        return Au_read(f)
-    elif mode in ('w', 'wb'):
-        return Au_write(f)
-    else:
-        raise Error("mode must be 'r', 'rb', 'w', or 'wb'")
diff --git a/Lib/symtable.py b/Lib/symtable.py
index 5dd71ffc6b4f19..17f820abd56660 100644
--- a/Lib/symtable.py
+++ b/Lib/symtable.py
@@ -62,8 +62,8 @@ def __repr__(self):
     def get_type(self):
         """Return the type of the symbol table.
 
-        The values returned are 'class', 'module' and
-        'function'.
+        The values returned are 'class', 'module', 'function',
+        'annotation', 'TypeVar bound', 'type alias', and 'type parameter'.
         """
         if self._table.type == _symtable.TYPE_MODULE:
             return "module"
@@ -71,8 +71,15 @@ def get_type(self):
             return "function"
         if self._table.type == _symtable.TYPE_CLASS:
             return "class"
-        assert self._table.type in (1, 2, 3), \
-               "unexpected type: {0}".format(self._table.type)
+        if self._table.type == _symtable.TYPE_ANNOTATION:
+            return "annotation"
+        if self._table.type == _symtable.TYPE_TYPE_VAR_BOUND:
+            return "TypeVar bound"
+        if self._table.type == _symtable.TYPE_TYPE_ALIAS:
+            return "type alias"
+        if self._table.type == _symtable.TYPE_TYPE_PARAM:
+            return "type parameter"
+        assert False, f"unexpected type: {self._table.type}"
 
     def get_id(self):
         """Return an identifier for the table.
@@ -226,7 +233,16 @@ def __init__(self, name, flags, namespaces=None, *, module_scope=False):
         self.__module_scope = module_scope
 
     def __repr__(self):
-        return "<symbol {0!r}>".format(self.__name)
+        flags_str = '|'.join(self._flags_str())
+        return f'<symbol {self.__name!r}: {self._scope_str()}, {flags_str}>'
+
+    def _scope_str(self):
+        return _scopes_value_to_name.get(self.__scope) or str(self.__scope)
+
+    def _flags_str(self):
+        for flagname, flagvalue in _flags:
+            if self.__flags & flagvalue == flagvalue:
+                yield flagname
 
     def get_name(self):
         """Return a name of a symbol.
@@ -316,11 +332,43 @@ def get_namespace(self):
         else:
             return self.__namespaces[0]
 
+
+_flags = [('USE', USE)]
+_flags.extend(kv for kv in globals().items() if kv[0].startswith('DEF_'))
+_scopes_names = ('FREE', 'LOCAL', 'GLOBAL_IMPLICIT', 'GLOBAL_EXPLICIT', 'CELL')
+_scopes_value_to_name = {globals()[n]: n for n in _scopes_names}
+
+
+def main(args):
+    import sys
+    def print_symbols(table, level=0):
+        indent = '    ' * level
+        nested = "nested " if table.is_nested() else ""
+        if table.get_type() == 'module':
+            what = f'from file {table._filename!r}'
+        else:
+            what = f'{table.get_name()!r}'
+        print(f'{indent}symbol table for {nested}{table.get_type()} {what}:')
+        for ident in table.get_identifiers():
+            symbol = table.lookup(ident)
+            flags = ', '.join(symbol._flags_str()).lower()
+            print(f'    {indent}{symbol._scope_str().lower()} symbol {symbol.get_name()!r}: {flags}')
+        print()
+
+        for table2 in table.get_children():
+            print_symbols(table2, level + 1)
+
+    for filename in args or ['-']:
+        if filename == '-':
+            src = sys.stdin.read()
+            filename = '<stdin>'
+        else:
+            with open(filename, 'rb') as f:
+                src = f.read()
+        mod = symtable(src, filename, 'exec')
+        print_symbols(mod)
+
+
 if __name__ == "__main__":
-    import os, sys
-    with open(sys.argv[0]) as f:
-        src = f.read()
-    mod = symtable(src, os.path.split(sys.argv[0])[1], "exec")
-    for ident in mod.get_identifiers():
-        info = mod.lookup(ident)
-        print(info, info.is_local(), info.is_namespace())
+    import sys
+    main(sys.argv[1:])
diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
deleted file mode 100644
index 122d441bd19f5e..00000000000000
--- a/Lib/sysconfig.py
+++ /dev/null
@@ -1,876 +0,0 @@
-"""Access to Python's configuration information."""
-
-import os
-import sys
-import threading
-from os.path import realpath
-
-__all__ = [
-    'get_config_h_filename',
-    'get_config_var',
-    'get_config_vars',
-    'get_makefile_filename',
-    'get_path',
-    'get_path_names',
-    'get_paths',
-    'get_platform',
-    'get_python_version',
-    'get_scheme_names',
-    'parse_config_h',
-]
-
-# Keys for get_config_var() that are never converted to Python integers.
-_ALWAYS_STR = {
-    'MACOSX_DEPLOYMENT_TARGET',
-}
-
-_INSTALL_SCHEMES = {
-    'posix_prefix': {
-        'stdlib': '{installed_base}/{platlibdir}/python{py_version_short}',
-        'platstdlib': '{platbase}/{platlibdir}/python{py_version_short}',
-        'purelib': '{base}/lib/python{py_version_short}/site-packages',
-        'platlib': '{platbase}/{platlibdir}/python{py_version_short}/site-packages',
-        'include':
-            '{installed_base}/include/python{py_version_short}{abiflags}',
-        'platinclude':
-            '{installed_platbase}/include/python{py_version_short}{abiflags}',
-        'scripts': '{base}/bin',
-        'data': '{base}',
-        },
-    'posix_home': {
-        'stdlib': '{installed_base}/lib/python',
-        'platstdlib': '{base}/lib/python',
-        'purelib': '{base}/lib/python',
-        'platlib': '{base}/lib/python',
-        'include': '{installed_base}/include/python',
-        'platinclude': '{installed_base}/include/python',
-        'scripts': '{base}/bin',
-        'data': '{base}',
-        },
-    'nt': {
-        'stdlib': '{installed_base}/Lib',
-        'platstdlib': '{base}/Lib',
-        'purelib': '{base}/Lib/site-packages',
-        'platlib': '{base}/Lib/site-packages',
-        'include': '{installed_base}/Include',
-        'platinclude': '{installed_base}/Include',
-        'scripts': '{base}/Scripts',
-        'data': '{base}',
-        },
-    # Downstream distributors can overwrite the default install scheme.
-    # This is done to support downstream modifications where distributors change
-    # the installation layout (eg. different site-packages directory).
-    # So, distributors will change the default scheme to one that correctly
-    # represents their layout.
-    # This presents an issue for projects/people that need to bootstrap virtual
-    # environments, like virtualenv. As distributors might now be customizing
-    # the default install scheme, there is no guarantee that the information
-    # returned by sysconfig.get_default_scheme/get_paths is correct for
-    # a virtual environment, the only guarantee we have is that it is correct
-    # for the *current* environment. When bootstrapping a virtual environment,
-    # we need to know its layout, so that we can place the files in the
-    # correct locations.
-    # The "*_venv" install scheme is a scheme to bootstrap virtual environments,
-    # essentially identical to the default posix_prefix/nt schemes.
-    # Downstream distributors who patch posix_prefix/nt scheme are encouraged to
-    # leave the following schemes unchanged
-    'posix_venv': {
-        'stdlib': '{installed_base}/{platlibdir}/python{py_version_short}',
-        'platstdlib': '{platbase}/{platlibdir}/python{py_version_short}',
-        'purelib': '{base}/lib/python{py_version_short}/site-packages',
-        'platlib': '{platbase}/{platlibdir}/python{py_version_short}/site-packages',
-        'include':
-            '{installed_base}/include/python{py_version_short}{abiflags}',
-        'platinclude':
-            '{installed_platbase}/include/python{py_version_short}{abiflags}',
-        'scripts': '{base}/bin',
-        'data': '{base}',
-        },
-    'nt_venv': {
-        'stdlib': '{installed_base}/Lib',
-        'platstdlib': '{base}/Lib',
-        'purelib': '{base}/Lib/site-packages',
-        'platlib': '{base}/Lib/site-packages',
-        'include': '{installed_base}/Include',
-        'platinclude': '{installed_base}/Include',
-        'scripts': '{base}/Scripts',
-        'data': '{base}',
-        },
-    }
-
-# For the OS-native venv scheme, we essentially provide an alias:
-if os.name == 'nt':
-    _INSTALL_SCHEMES['venv'] = _INSTALL_SCHEMES['nt_venv']
-else:
-    _INSTALL_SCHEMES['venv'] = _INSTALL_SCHEMES['posix_venv']
-
-
-# NOTE: site.py has copy of this function.
-# Sync it when modify this function.
-def _getuserbase():
-    env_base = os.environ.get("PYTHONUSERBASE", None)
-    if env_base:
-        return env_base
-
-    # Emscripten, VxWorks, and WASI have no home directories
-    if sys.platform in {"emscripten", "vxworks", "wasi"}:
-        return None
-
-    def joinuser(*args):
-        return os.path.expanduser(os.path.join(*args))
-
-    if os.name == "nt":
-        base = os.environ.get("APPDATA") or "~"
-        return joinuser(base, "Python")
-
-    if sys.platform == "darwin" and sys._framework:
-        return joinuser("~", "Library", sys._framework,
-                        f"{sys.version_info[0]}.{sys.version_info[1]}")
-
-    return joinuser("~", ".local")
-
-_HAS_USER_BASE = (_getuserbase() is not None)
-
-if _HAS_USER_BASE:
-    _INSTALL_SCHEMES |= {
-        # NOTE: When modifying "purelib" scheme, update site._get_path() too.
-        'nt_user': {
-            'stdlib': '{userbase}/Python{py_version_nodot_plat}',
-            'platstdlib': '{userbase}/Python{py_version_nodot_plat}',
-            'purelib': '{userbase}/Python{py_version_nodot_plat}/site-packages',
-            'platlib': '{userbase}/Python{py_version_nodot_plat}/site-packages',
-            'include': '{userbase}/Python{py_version_nodot_plat}/Include',
-            'scripts': '{userbase}/Python{py_version_nodot_plat}/Scripts',
-            'data': '{userbase}',
-            },
-        'posix_user': {
-            'stdlib': '{userbase}/{platlibdir}/python{py_version_short}',
-            'platstdlib': '{userbase}/{platlibdir}/python{py_version_short}',
-            'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
-            'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
-            'include': '{userbase}/include/python{py_version_short}',
-            'scripts': '{userbase}/bin',
-            'data': '{userbase}',
-            },
-        'osx_framework_user': {
-            'stdlib': '{userbase}/lib/python',
-            'platstdlib': '{userbase}/lib/python',
-            'purelib': '{userbase}/lib/python/site-packages',
-            'platlib': '{userbase}/lib/python/site-packages',
-            'include': '{userbase}/include/python{py_version_short}',
-            'scripts': '{userbase}/bin',
-            'data': '{userbase}',
-            },
-    }
-
-_SCHEME_KEYS = ('stdlib', 'platstdlib', 'purelib', 'platlib', 'include',
-                'scripts', 'data')
-
-_PY_VERSION = sys.version.split()[0]
-_PY_VERSION_SHORT = f'{sys.version_info[0]}.{sys.version_info[1]}'
-_PY_VERSION_SHORT_NO_DOT = f'{sys.version_info[0]}{sys.version_info[1]}'
-_PREFIX = os.path.normpath(sys.prefix)
-_BASE_PREFIX = os.path.normpath(sys.base_prefix)
-_EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
-_BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
-# Mutex guarding initialization of _CONFIG_VARS.
-_CONFIG_VARS_LOCK = threading.RLock()
-_CONFIG_VARS = None
-# True iff _CONFIG_VARS has been fully initialized.
-_CONFIG_VARS_INITIALIZED = False
-_USER_BASE = None
-
-# Regexes needed for parsing Makefile (and similar syntaxes,
-# like old-style Setup files).
-_variable_rx = r"([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)"
-_findvar1_rx = r"\$\(([A-Za-z][A-Za-z0-9_]*)\)"
-_findvar2_rx = r"\${([A-Za-z][A-Za-z0-9_]*)}"
-
-
-def _safe_realpath(path):
-    try:
-        return realpath(path)
-    except OSError:
-        return path
-
-if sys.executable:
-    _PROJECT_BASE = os.path.dirname(_safe_realpath(sys.executable))
-else:
-    # sys.executable can be empty if argv[0] has been changed and Python is
-    # unable to retrieve the real program name
-    _PROJECT_BASE = _safe_realpath(os.getcwd())
-
-# In a virtual environment, `sys._home` gives us the target directory
-# `_PROJECT_BASE` for the executable that created it when the virtual
-# python is an actual executable ('venv --copies' or Windows).
-_sys_home = getattr(sys, '_home', None)
-if _sys_home:
-    _PROJECT_BASE = _sys_home
-
-if os.name == 'nt':
-    # In a source build, the executable is in a subdirectory of the root
-    # that we want (<root>\PCbuild\<platname>).
-    # `_BASE_PREFIX` is used as the base installation is where the source
-    # will be.  The realpath is needed to prevent mount point confusion
-    # that can occur with just string comparisons.
-    if _safe_realpath(_PROJECT_BASE).startswith(
-            _safe_realpath(f'{_BASE_PREFIX}\\PCbuild')):
-        _PROJECT_BASE = _BASE_PREFIX
-
-# set for cross builds
-if "_PYTHON_PROJECT_BASE" in os.environ:
-    _PROJECT_BASE = _safe_realpath(os.environ["_PYTHON_PROJECT_BASE"])
-
-def is_python_build(check_home=None):
-    if check_home is not None:
-        import warnings
-        warnings.warn("check_home argument is deprecated and ignored.",
-                      DeprecationWarning, stacklevel=2)
-    for fn in ("Setup", "Setup.local"):
-        if os.path.isfile(os.path.join(_PROJECT_BASE, "Modules", fn)):
-            return True
-    return False
-
-_PYTHON_BUILD = is_python_build()
-
-if _PYTHON_BUILD:
-    for scheme in ('posix_prefix', 'posix_home'):
-        # On POSIX-y platforms, Python will:
-        # - Build from .h files in 'headers' (which is only added to the
-        #   scheme when building CPython)
-        # - Install .h files to 'include'
-        scheme = _INSTALL_SCHEMES[scheme]
-        scheme['headers'] = scheme['include']
-        scheme['include'] = '{srcdir}/Include'
-        scheme['platinclude'] = '{projectbase}/.'
-    del scheme
-
-
-def _subst_vars(s, local_vars):
-    try:
-        return s.format(**local_vars)
-    except KeyError as var:
-        try:
-            return s.format(**os.environ)
-        except KeyError:
-            raise AttributeError(f'{var}') from None
-
-def _extend_dict(target_dict, other_dict):
-    target_keys = target_dict.keys()
-    for key, value in other_dict.items():
-        if key in target_keys:
-            continue
-        target_dict[key] = value
-
-
-def _expand_vars(scheme, vars):
-    res = {}
-    if vars is None:
-        vars = {}
-    _extend_dict(vars, get_config_vars())
-    if os.name == 'nt':
-        # On Windows we want to substitute 'lib' for schemes rather
-        # than the native value (without modifying vars, in case it
-        # was passed in)
-        vars = vars | {'platlibdir': 'lib'}
-
-    for key, value in _INSTALL_SCHEMES[scheme].items():
-        if os.name in ('posix', 'nt'):
-            value = os.path.expanduser(value)
-        res[key] = os.path.normpath(_subst_vars(value, vars))
-    return res
-
-
-def _get_preferred_schemes():
-    if os.name == 'nt':
-        return {
-            'prefix': 'nt',
-            'home': 'posix_home',
-            'user': 'nt_user',
-        }
-    if sys.platform == 'darwin' and sys._framework:
-        return {
-            'prefix': 'posix_prefix',
-            'home': 'posix_home',
-            'user': 'osx_framework_user',
-        }
-    return {
-        'prefix': 'posix_prefix',
-        'home': 'posix_home',
-        'user': 'posix_user',
-    }
-
-
-def get_preferred_scheme(key):
-    if key == 'prefix' and sys.prefix != sys.base_prefix:
-        return 'venv'
-    scheme = _get_preferred_schemes()[key]
-    if scheme not in _INSTALL_SCHEMES:
-        raise ValueError(
-            f"{key!r} returned {scheme!r}, which is not a valid scheme "
-            f"on this platform"
-        )
-    return scheme
-
-
-def get_default_scheme():
-    return get_preferred_scheme('prefix')
-
-
-def _parse_makefile(filename, vars=None, keep_unresolved=True):
-    """Parse a Makefile-style file.
-
-    A dictionary containing name/value pairs is returned.  If an
-    optional dictionary is passed in as the second argument, it is
-    used instead of a new dictionary.
-    """
-    import re
-
-    if vars is None:
-        vars = {}
-    done = {}
-    notdone = {}
-
-    with open(filename, encoding=sys.getfilesystemencoding(),
-              errors="surrogateescape") as f:
-        lines = f.readlines()
-
-    for line in lines:
-        if line.startswith('#') or line.strip() == '':
-            continue
-        m = re.match(_variable_rx, line)
-        if m:
-            n, v = m.group(1, 2)
-            v = v.strip()
-            # `$$' is a literal `$' in make
-            tmpv = v.replace('$$', '')
-
-            if "$" in tmpv:
-                notdone[n] = v
-            else:
-                try:
-                    if n in _ALWAYS_STR:
-                        raise ValueError
-
-                    v = int(v)
-                except ValueError:
-                    # insert literal `$'
-                    done[n] = v.replace('$$', '$')
-                else:
-                    done[n] = v
-
-    # do variable interpolation here
-    variables = list(notdone.keys())
-
-    # Variables with a 'PY_' prefix in the makefile. These need to
-    # be made available without that prefix through sysconfig.
-    # Special care is needed to ensure that variable expansion works, even
-    # if the expansion uses the name without a prefix.
-    renamed_variables = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS')
-
-    while len(variables) > 0:
-        for name in tuple(variables):
-            value = notdone[name]
-            m1 = re.search(_findvar1_rx, value)
-            m2 = re.search(_findvar2_rx, value)
-            if m1 and m2:
-                m = m1 if m1.start() < m2.start() else m2
-            else:
-                m = m1 if m1 else m2
-            if m is not None:
-                n = m.group(1)
-                found = True
-                if n in done:
-                    item = str(done[n])
-                elif n in notdone:
-                    # get it on a subsequent round
-                    found = False
-                elif n in os.environ:
-                    # do it like make: fall back to environment
-                    item = os.environ[n]
-
-                elif n in renamed_variables:
-                    if (name.startswith('PY_') and
-                        name[3:] in renamed_variables):
-                        item = ""
-
-                    elif 'PY_' + n in notdone:
-                        found = False
-
-                    else:
-                        item = str(done['PY_' + n])
-
-                else:
-                    done[n] = item = ""
-
-                if found:
-                    after = value[m.end():]
-                    value = value[:m.start()] + item + after
-                    if "$" in after:
-                        notdone[name] = value
-                    else:
-                        try:
-                            if name in _ALWAYS_STR:
-                                raise ValueError
-                            value = int(value)
-                        except ValueError:
-                            done[name] = value.strip()
-                        else:
-                            done[name] = value
-                        variables.remove(name)
-
-                        if name.startswith('PY_') \
-                        and name[3:] in renamed_variables:
-
-                            name = name[3:]
-                            if name not in done:
-                                done[name] = value
-
-            else:
-                # Adds unresolved variables to the done dict.
-                # This is disabled when called from distutils.sysconfig
-                if keep_unresolved:
-                    done[name] = value
-                # bogus variable reference (e.g. "prefix=$/opt/python");
-                # just drop it since we can't deal
-                variables.remove(name)
-
-    # strip spurious spaces
-    for k, v in done.items():
-        if isinstance(v, str):
-            done[k] = v.strip()
-
-    # save the results in the global dictionary
-    vars.update(done)
-    return vars
-
-
-def get_makefile_filename():
-    """Return the path of the Makefile."""
-    if _PYTHON_BUILD:
-        return os.path.join(_PROJECT_BASE, "Makefile")
-    if hasattr(sys, 'abiflags'):
-        config_dir_name = f'config-{_PY_VERSION_SHORT}{sys.abiflags}'
-    else:
-        config_dir_name = 'config'
-    if hasattr(sys.implementation, '_multiarch'):
-        config_dir_name += f'-{sys.implementation._multiarch}'
-    return os.path.join(get_path('stdlib'), config_dir_name, 'Makefile')
-
-
-def _get_sysconfigdata_name():
-    multiarch = getattr(sys.implementation, '_multiarch', '')
-    return os.environ.get(
-        '_PYTHON_SYSCONFIGDATA_NAME',
-        f'_sysconfigdata_{sys.abiflags}_{sys.platform}_{multiarch}',
-    )
-
-
-def _generate_posix_vars():
-    """Generate the Python module containing build-time variables."""
-    import pprint
-    vars = {}
-    # load the installed Makefile:
-    makefile = get_makefile_filename()
-    try:
-        _parse_makefile(makefile, vars)
-    except OSError as e:
-        msg = f"invalid Python installation: unable to open {makefile}"
-        if hasattr(e, "strerror"):
-            msg = f"{msg} ({e.strerror})"
-        raise OSError(msg)
-    # load the installed pyconfig.h:
-    config_h = get_config_h_filename()
-    try:
-        with open(config_h, encoding="utf-8") as f:
-            parse_config_h(f, vars)
-    except OSError as e:
-        msg = f"invalid Python installation: unable to open {config_h}"
-        if hasattr(e, "strerror"):
-            msg = f"{msg} ({e.strerror})"
-        raise OSError(msg)
-    # On AIX, there are wrong paths to the linker scripts in the Makefile
-    # -- these paths are relative to the Python source, but when installed
-    # the scripts are in another directory.
-    if _PYTHON_BUILD:
-        vars['BLDSHARED'] = vars['LDSHARED']
-
-    # There's a chicken-and-egg situation on OS X with regards to the
-    # _sysconfigdata module after the changes introduced by #15298:
-    # get_config_vars() is called by get_platform() as part of the
-    # `make pybuilddir.txt` target -- which is a precursor to the
-    # _sysconfigdata.py module being constructed.  Unfortunately,
-    # get_config_vars() eventually calls _init_posix(), which attempts
-    # to import _sysconfigdata, which we won't have built yet.  In order
-    # for _init_posix() to work, if we're on Darwin, just mock up the
-    # _sysconfigdata module manually and populate it with the build vars.
-    # This is more than sufficient for ensuring the subsequent call to
-    # get_platform() succeeds.
-    name = _get_sysconfigdata_name()
-    if 'darwin' in sys.platform:
-        import types
-        module = types.ModuleType(name)
-        module.build_time_vars = vars
-        sys.modules[name] = module
-
-    pybuilddir = f'build/lib.{get_platform()}-{_PY_VERSION_SHORT}'
-    if hasattr(sys, "gettotalrefcount"):
-        pybuilddir += '-pydebug'
-    os.makedirs(pybuilddir, exist_ok=True)
-    destfile = os.path.join(pybuilddir, name + '.py')
-
-    with open(destfile, 'w', encoding='utf8') as f:
-        f.write('# system configuration generated and used by'
-                ' the sysconfig module\n')
-        f.write('build_time_vars = ')
-        pprint.pprint(vars, stream=f)
-
-    # Create file used for sys.path fixup -- see Modules/getpath.c
-    with open('pybuilddir.txt', 'w', encoding='utf8') as f:
-        f.write(pybuilddir)
-
-def _init_posix(vars):
-    """Initialize the module as appropriate for POSIX systems."""
-    # _sysconfigdata is generated at build time, see _generate_posix_vars()
-    name = _get_sysconfigdata_name()
-    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
-    build_time_vars = _temp.build_time_vars
-    vars.update(build_time_vars)
-
-def _init_non_posix(vars):
-    """Initialize the module as appropriate for NT"""
-    # set basic install directories
-    import _imp
-    vars['LIBDEST'] = get_path('stdlib')
-    vars['BINLIBDEST'] = get_path('platstdlib')
-    vars['INCLUDEPY'] = get_path('include')
-    try:
-        # GH-99201: _imp.extension_suffixes may be empty when
-        # HAVE_DYNAMIC_LOADING is not set. In this case, don't set EXT_SUFFIX.
-        vars['EXT_SUFFIX'] = _imp.extension_suffixes()[0]
-    except IndexError:
-        pass
-    vars['EXE'] = '.exe'
-    vars['VERSION'] = _PY_VERSION_SHORT_NO_DOT
-    vars['BINDIR'] = os.path.dirname(_safe_realpath(sys.executable))
-    vars['TZPATH'] = ''
-
-#
-# public APIs
-#
-
-
-def parse_config_h(fp, vars=None):
-    """Parse a config.h-style file.
-
-    A dictionary containing name/value pairs is returned.  If an
-    optional dictionary is passed in as the second argument, it is
-    used instead of a new dictionary.
-    """
-    if vars is None:
-        vars = {}
-    import re
-    define_rx = re.compile("#define ([A-Z][A-Za-z0-9_]+) (.*)\n")
-    undef_rx = re.compile("/[*] #undef ([A-Z][A-Za-z0-9_]+) [*]/\n")
-
-    while True:
-        line = fp.readline()
-        if not line:
-            break
-        m = define_rx.match(line)
-        if m:
-            n, v = m.group(1, 2)
-            try:
-                if n in _ALWAYS_STR:
-                    raise ValueError
-                v = int(v)
-            except ValueError:
-                pass
-            vars[n] = v
-        else:
-            m = undef_rx.match(line)
-            if m:
-                vars[m.group(1)] = 0
-    return vars
-
-
-def get_config_h_filename():
-    """Return the path of pyconfig.h."""
-    if _PYTHON_BUILD:
-        if os.name == "nt":
-            inc_dir = os.path.join(_PROJECT_BASE, "PC")
-        else:
-            inc_dir = _PROJECT_BASE
-    else:
-        inc_dir = get_path('platinclude')
-    return os.path.join(inc_dir, 'pyconfig.h')
-
-
-def get_scheme_names():
-    """Return a tuple containing the schemes names."""
-    return tuple(sorted(_INSTALL_SCHEMES))
-
-
-def get_path_names():
-    """Return a tuple containing the paths names."""
-    return _SCHEME_KEYS
-
-
-def get_paths(scheme=get_default_scheme(), vars=None, expand=True):
-    """Return a mapping containing an install scheme.
-
-    ``scheme`` is the install scheme name. If not provided, it will
-    return the default scheme for the current platform.
-    """
-    if expand:
-        return _expand_vars(scheme, vars)
-    else:
-        return _INSTALL_SCHEMES[scheme]
-
-
-def get_path(name, scheme=get_default_scheme(), vars=None, expand=True):
-    """Return a path corresponding to the scheme.
-
-    ``scheme`` is the install scheme name.
-    """
-    return get_paths(scheme, vars, expand)[name]
-
-
-def _init_config_vars():
-    global _CONFIG_VARS
-    _CONFIG_VARS = {}
-    # Normalized versions of prefix and exec_prefix are handy to have;
-    # in fact, these are the standard versions used most places in the
-    # Distutils.
-    _CONFIG_VARS['prefix'] = _PREFIX
-    _CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX
-    _CONFIG_VARS['py_version'] = _PY_VERSION
-    _CONFIG_VARS['py_version_short'] = _PY_VERSION_SHORT
-    _CONFIG_VARS['py_version_nodot'] = _PY_VERSION_SHORT_NO_DOT
-    _CONFIG_VARS['installed_base'] = _BASE_PREFIX
-    _CONFIG_VARS['base'] = _PREFIX
-    _CONFIG_VARS['installed_platbase'] = _BASE_EXEC_PREFIX
-    _CONFIG_VARS['platbase'] = _EXEC_PREFIX
-    _CONFIG_VARS['projectbase'] = _PROJECT_BASE
-    _CONFIG_VARS['platlibdir'] = sys.platlibdir
-    try:
-        _CONFIG_VARS['abiflags'] = sys.abiflags
-    except AttributeError:
-        # sys.abiflags may not be defined on all platforms.
-        _CONFIG_VARS['abiflags'] = ''
-    try:
-        _CONFIG_VARS['py_version_nodot_plat'] = sys.winver.replace('.', '')
-    except AttributeError:
-        _CONFIG_VARS['py_version_nodot_plat'] = ''
-
-    if os.name == 'nt':
-        _init_non_posix(_CONFIG_VARS)
-        _CONFIG_VARS['VPATH'] = sys._vpath
-    if os.name == 'posix':
-        _init_posix(_CONFIG_VARS)
-    if _HAS_USER_BASE:
-        # Setting 'userbase' is done below the call to the
-        # init function to enable using 'get_config_var' in
-        # the init-function.
-        _CONFIG_VARS['userbase'] = _getuserbase()
-
-    # Always convert srcdir to an absolute path
-    srcdir = _CONFIG_VARS.get('srcdir', _PROJECT_BASE)
-    if os.name == 'posix':
-        if _PYTHON_BUILD:
-            # If srcdir is a relative path (typically '.' or '..')
-            # then it should be interpreted relative to the directory
-            # containing Makefile.
-            base = os.path.dirname(get_makefile_filename())
-            srcdir = os.path.join(base, srcdir)
-        else:
-            # srcdir is not meaningful since the installation is
-            # spread about the filesystem.  We choose the
-            # directory containing the Makefile since we know it
-            # exists.
-            srcdir = os.path.dirname(get_makefile_filename())
-    _CONFIG_VARS['srcdir'] = _safe_realpath(srcdir)
-
-    # OS X platforms require special customization to handle
-    # multi-architecture, multi-os-version installers
-    if sys.platform == 'darwin':
-        import _osx_support
-        _osx_support.customize_config_vars(_CONFIG_VARS)
-
-    global _CONFIG_VARS_INITIALIZED
-    _CONFIG_VARS_INITIALIZED = True
-
-
-def get_config_vars(*args):
-    """With no arguments, return a dictionary of all configuration
-    variables relevant for the current platform.
-
-    On Unix, this means every variable defined in Python's installed Makefile;
-    On Windows it's a much smaller set.
-
-    With arguments, return a list of values that result from looking up
-    each argument in the configuration variable dictionary.
-    """
-
-    # Avoid claiming the lock once initialization is complete.
-    if not _CONFIG_VARS_INITIALIZED:
-        with _CONFIG_VARS_LOCK:
-            # Test again with the lock held to avoid races. Note that
-            # we test _CONFIG_VARS here, not _CONFIG_VARS_INITIALIZED,
-            # to ensure that recursive calls to get_config_vars()
-            # don't re-enter init_config_vars().
-            if _CONFIG_VARS is None:
-                _init_config_vars()
-
-    if args:
-        vals = []
-        for name in args:
-            vals.append(_CONFIG_VARS.get(name))
-        return vals
-    else:
-        return _CONFIG_VARS
-
-
-def get_config_var(name):
-    """Return the value of a single variable using the dictionary returned by
-    'get_config_vars()'.
-
-    Equivalent to get_config_vars().get(name)
-    """
-    return get_config_vars().get(name)
-
-
-def get_platform():
-    """Return a string that identifies the current platform.
-
-    This is used mainly to distinguish platform-specific build directories and
-    platform-specific built distributions.  Typically includes the OS name and
-    version and the architecture (as supplied by 'os.uname()'), although the
-    exact information included depends on the OS; on Linux, the kernel version
-    isn't particularly important.
-
-    Examples of returned values:
-       linux-i586
-       linux-alpha (?)
-       solaris-2.6-sun4u
-
-    Windows will return one of:
-       win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
-       win32 (all others - specifically, sys.platform is returned)
-
-    For other non-POSIX platforms, currently just returns 'sys.platform'.
-
-    """
-    if os.name == 'nt':
-        if 'amd64' in sys.version.lower():
-            return 'win-amd64'
-        if '(arm)' in sys.version.lower():
-            return 'win-arm32'
-        if '(arm64)' in sys.version.lower():
-            return 'win-arm64'
-        return sys.platform
-
-    if os.name != "posix" or not hasattr(os, 'uname'):
-        # XXX what about the architecture? NT is Intel or Alpha
-        return sys.platform
-
-    # Set for cross builds explicitly
-    if "_PYTHON_HOST_PLATFORM" in os.environ:
-        return os.environ["_PYTHON_HOST_PLATFORM"]
-
-    # Try to distinguish various flavours of Unix
-    osname, host, release, version, machine = os.uname()
-
-    # Convert the OS name to lowercase, remove '/' characters, and translate
-    # spaces (for "Power Macintosh")
-    osname = osname.lower().replace('/', '')
-    machine = machine.replace(' ', '_')
-    machine = machine.replace('/', '-')
-
-    if osname[:5] == "linux":
-        # At least on Linux/Intel, 'machine' is the processor --
-        # i386, etc.
-        # XXX what about Alpha, SPARC, etc?
-        return  f"{osname}-{machine}"
-    elif osname[:5] == "sunos":
-        if release[0] >= "5":           # SunOS 5 == Solaris 2
-            osname = "solaris"
-            release = f"{int(release[0]) - 3}.{release[2:]}"
-            # We can't use "platform.architecture()[0]" because a
-            # bootstrap problem. We use a dict to get an error
-            # if some suspicious happens.
-            bitness = {2147483647:"32bit", 9223372036854775807:"64bit"}
-            machine += f".{bitness[sys.maxsize]}"
-        # fall through to standard osname-release-machine representation
-    elif osname[:3] == "aix":
-        from _aix_support import aix_platform
-        return aix_platform()
-    elif osname[:6] == "cygwin":
-        osname = "cygwin"
-        import re
-        rel_re = re.compile(r'[\d.]+')
-        m = rel_re.match(release)
-        if m:
-            release = m.group()
-    elif osname[:6] == "darwin":
-        import _osx_support
-        osname, release, machine = _osx_support.get_platform_osx(
-                                            get_config_vars(),
-                                            osname, release, machine)
-
-    return f"{osname}-{release}-{machine}"
-
-
-def get_python_version():
-    return _PY_VERSION_SHORT
-
-
-def expand_makefile_vars(s, vars):
-    """Expand Makefile-style variables -- "${foo}" or "$(foo)" -- in
-    'string' according to 'vars' (a dictionary mapping variable names to
-    values).  Variables not present in 'vars' are silently expanded to the
-    empty string.  The variable values in 'vars' should not contain further
-    variable expansions; if 'vars' is the output of 'parse_makefile()',
-    you're fine.  Returns a variable-expanded version of 's'.
-    """
-    import re
-
-    # This algorithm does multiple expansion, so if vars['foo'] contains
-    # "${bar}", it will expand ${foo} to ${bar}, and then expand
-    # ${bar}... and so forth.  This is fine as long as 'vars' comes from
-    # 'parse_makefile()', which takes care of such expansions eagerly,
-    # according to make's variable expansion semantics.
-
-    while True:
-        m = re.search(_findvar1_rx, s) or re.search(_findvar2_rx, s)
-        if m:
-            (beg, end) = m.span()
-            s = s[0:beg] + vars.get(m.group(1)) + s[end:]
-        else:
-            break
-    return s
-
-
-def _print_dict(title, data):
-    for index, (key, value) in enumerate(sorted(data.items())):
-        if index == 0:
-            print(f'{title}: ')
-        print(f'\t{key} = "{value}"')
-
-
-def _main():
-    """Display all information sysconfig detains."""
-    if '--generate-posix-vars' in sys.argv:
-        _generate_posix_vars()
-        return
-    print(f'Platform: "{get_platform()}"')
-    print(f'Python version: "{get_python_version()}"')
-    print(f'Current installation scheme: "{get_default_scheme()}"')
-    print()
-    _print_dict('Paths', get_paths())
-    print()
-    _print_dict('Variables', get_config_vars())
-
-
-if __name__ == '__main__':
-    _main()
diff --git a/Lib/sysconfig/__init__.py b/Lib/sysconfig/__init__.py
new file mode 100644
index 00000000000000..2a7fa45be079de
--- /dev/null
+++ b/Lib/sysconfig/__init__.py
@@ -0,0 +1,657 @@
+"""Access to Python's configuration information."""
+
+import os
+import sys
+import threading
+from os.path import realpath
+
+__all__ = [
+    'get_config_h_filename',
+    'get_config_var',
+    'get_config_vars',
+    'get_makefile_filename',
+    'get_path',
+    'get_path_names',
+    'get_paths',
+    'get_platform',
+    'get_python_version',
+    'get_scheme_names',
+    'parse_config_h',
+]
+
+# Keys for get_config_var() that are never converted to Python integers.
+_ALWAYS_STR = {
+    'MACOSX_DEPLOYMENT_TARGET',
+}
+
+_INSTALL_SCHEMES = {
+    'posix_prefix': {
+        'stdlib': '{installed_base}/{platlibdir}/python{py_version_short}',
+        'platstdlib': '{platbase}/{platlibdir}/python{py_version_short}',
+        'purelib': '{base}/lib/python{py_version_short}/site-packages',
+        'platlib': '{platbase}/{platlibdir}/python{py_version_short}/site-packages',
+        'include':
+            '{installed_base}/include/python{py_version_short}{abiflags}',
+        'platinclude':
+            '{installed_platbase}/include/python{py_version_short}{abiflags}',
+        'scripts': '{base}/bin',
+        'data': '{base}',
+        },
+    'posix_home': {
+        'stdlib': '{installed_base}/lib/python',
+        'platstdlib': '{base}/lib/python',
+        'purelib': '{base}/lib/python',
+        'platlib': '{base}/lib/python',
+        'include': '{installed_base}/include/python',
+        'platinclude': '{installed_base}/include/python',
+        'scripts': '{base}/bin',
+        'data': '{base}',
+        },
+    'nt': {
+        'stdlib': '{installed_base}/Lib',
+        'platstdlib': '{base}/Lib',
+        'purelib': '{base}/Lib/site-packages',
+        'platlib': '{base}/Lib/site-packages',
+        'include': '{installed_base}/Include',
+        'platinclude': '{installed_base}/Include',
+        'scripts': '{base}/Scripts',
+        'data': '{base}',
+        },
+    # Downstream distributors can overwrite the default install scheme.
+    # This is done to support downstream modifications where distributors change
+    # the installation layout (eg. different site-packages directory).
+    # So, distributors will change the default scheme to one that correctly
+    # represents their layout.
+    # This presents an issue for projects/people that need to bootstrap virtual
+    # environments, like virtualenv. As distributors might now be customizing
+    # the default install scheme, there is no guarantee that the information
+    # returned by sysconfig.get_default_scheme/get_paths is correct for
+    # a virtual environment, the only guarantee we have is that it is correct
+    # for the *current* environment. When bootstrapping a virtual environment,
+    # we need to know its layout, so that we can place the files in the
+    # correct locations.
+    # The "*_venv" install scheme is a scheme to bootstrap virtual environments,
+    # essentially identical to the default posix_prefix/nt schemes.
+    # Downstream distributors who patch posix_prefix/nt scheme are encouraged to
+    # leave the following schemes unchanged
+    'posix_venv': {
+        'stdlib': '{installed_base}/{platlibdir}/python{py_version_short}',
+        'platstdlib': '{platbase}/{platlibdir}/python{py_version_short}',
+        'purelib': '{base}/lib/python{py_version_short}/site-packages',
+        'platlib': '{platbase}/{platlibdir}/python{py_version_short}/site-packages',
+        'include':
+            '{installed_base}/include/python{py_version_short}{abiflags}',
+        'platinclude':
+            '{installed_platbase}/include/python{py_version_short}{abiflags}',
+        'scripts': '{base}/bin',
+        'data': '{base}',
+        },
+    'nt_venv': {
+        'stdlib': '{installed_base}/Lib',
+        'platstdlib': '{base}/Lib',
+        'purelib': '{base}/Lib/site-packages',
+        'platlib': '{base}/Lib/site-packages',
+        'include': '{installed_base}/Include',
+        'platinclude': '{installed_base}/Include',
+        'scripts': '{base}/Scripts',
+        'data': '{base}',
+        },
+    }
+
+# For the OS-native venv scheme, we essentially provide an alias:
+if os.name == 'nt':
+    _INSTALL_SCHEMES['venv'] = _INSTALL_SCHEMES['nt_venv']
+else:
+    _INSTALL_SCHEMES['venv'] = _INSTALL_SCHEMES['posix_venv']
+
+
+# NOTE: site.py has copy of this function.
+# Sync it when modify this function.
+def _getuserbase():
+    env_base = os.environ.get("PYTHONUSERBASE", None)
+    if env_base:
+        return env_base
+
+    # Emscripten, VxWorks, and WASI have no home directories
+    if sys.platform in {"emscripten", "vxworks", "wasi"}:
+        return None
+
+    def joinuser(*args):
+        return os.path.expanduser(os.path.join(*args))
+
+    if os.name == "nt":
+        base = os.environ.get("APPDATA") or "~"
+        return joinuser(base, "Python")
+
+    if sys.platform == "darwin" and sys._framework:
+        return joinuser("~", "Library", sys._framework,
+                        f"{sys.version_info[0]}.{sys.version_info[1]}")
+
+    return joinuser("~", ".local")
+
+_HAS_USER_BASE = (_getuserbase() is not None)
+
+if _HAS_USER_BASE:
+    _INSTALL_SCHEMES |= {
+        # NOTE: When modifying "purelib" scheme, update site._get_path() too.
+        'nt_user': {
+            'stdlib': '{userbase}/Python{py_version_nodot_plat}',
+            'platstdlib': '{userbase}/Python{py_version_nodot_plat}',
+            'purelib': '{userbase}/Python{py_version_nodot_plat}/site-packages',
+            'platlib': '{userbase}/Python{py_version_nodot_plat}/site-packages',
+            'include': '{userbase}/Python{py_version_nodot_plat}/Include',
+            'scripts': '{userbase}/Python{py_version_nodot_plat}/Scripts',
+            'data': '{userbase}',
+            },
+        'posix_user': {
+            'stdlib': '{userbase}/{platlibdir}/python{py_version_short}',
+            'platstdlib': '{userbase}/{platlibdir}/python{py_version_short}',
+            'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
+            'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
+            'include': '{userbase}/include/python{py_version_short}',
+            'scripts': '{userbase}/bin',
+            'data': '{userbase}',
+            },
+        'osx_framework_user': {
+            'stdlib': '{userbase}/lib/python',
+            'platstdlib': '{userbase}/lib/python',
+            'purelib': '{userbase}/lib/python/site-packages',
+            'platlib': '{userbase}/lib/python/site-packages',
+            'include': '{userbase}/include/python{py_version_short}',
+            'scripts': '{userbase}/bin',
+            'data': '{userbase}',
+            },
+    }
+
+_SCHEME_KEYS = ('stdlib', 'platstdlib', 'purelib', 'platlib', 'include',
+                'scripts', 'data')
+
+_PY_VERSION = sys.version.split()[0]
+_PY_VERSION_SHORT = f'{sys.version_info[0]}.{sys.version_info[1]}'
+_PY_VERSION_SHORT_NO_DOT = f'{sys.version_info[0]}{sys.version_info[1]}'
+_PREFIX = os.path.normpath(sys.prefix)
+_BASE_PREFIX = os.path.normpath(sys.base_prefix)
+_EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
+_BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
+# Mutex guarding initialization of _CONFIG_VARS.
+_CONFIG_VARS_LOCK = threading.RLock()
+_CONFIG_VARS = None
+# True iff _CONFIG_VARS has been fully initialized.
+_CONFIG_VARS_INITIALIZED = False
+_USER_BASE = None
+
+
+def _safe_realpath(path):
+    try:
+        return realpath(path)
+    except OSError:
+        return path
+
+if sys.executable:
+    _PROJECT_BASE = os.path.dirname(_safe_realpath(sys.executable))
+else:
+    # sys.executable can be empty if argv[0] has been changed and Python is
+    # unable to retrieve the real program name
+    _PROJECT_BASE = _safe_realpath(os.getcwd())
+
+# In a virtual environment, `sys._home` gives us the target directory
+# `_PROJECT_BASE` for the executable that created it when the virtual
+# python is an actual executable ('venv --copies' or Windows).
+_sys_home = getattr(sys, '_home', None)
+if _sys_home:
+    _PROJECT_BASE = _sys_home
+
+if os.name == 'nt':
+    # In a source build, the executable is in a subdirectory of the root
+    # that we want (<root>\PCbuild\<platname>).
+    # `_BASE_PREFIX` is used as the base installation is where the source
+    # will be.  The realpath is needed to prevent mount point confusion
+    # that can occur with just string comparisons.
+    if _safe_realpath(_PROJECT_BASE).startswith(
+            _safe_realpath(f'{_BASE_PREFIX}\\PCbuild')):
+        _PROJECT_BASE = _BASE_PREFIX
+
+# set for cross builds
+if "_PYTHON_PROJECT_BASE" in os.environ:
+    _PROJECT_BASE = _safe_realpath(os.environ["_PYTHON_PROJECT_BASE"])
+
+def is_python_build(check_home=None):
+    if check_home is not None:
+        import warnings
+        warnings.warn("check_home argument is deprecated and ignored.",
+                      DeprecationWarning, stacklevel=2)
+    for fn in ("Setup", "Setup.local"):
+        if os.path.isfile(os.path.join(_PROJECT_BASE, "Modules", fn)):
+            return True
+    return False
+
+_PYTHON_BUILD = is_python_build()
+
+if _PYTHON_BUILD:
+    for scheme in ('posix_prefix', 'posix_home'):
+        # On POSIX-y platforms, Python will:
+        # - Build from .h files in 'headers' (which is only added to the
+        #   scheme when building CPython)
+        # - Install .h files to 'include'
+        scheme = _INSTALL_SCHEMES[scheme]
+        scheme['headers'] = scheme['include']
+        scheme['include'] = '{srcdir}/Include'
+        scheme['platinclude'] = '{projectbase}/.'
+    del scheme
+
+
+def _subst_vars(s, local_vars):
+    try:
+        return s.format(**local_vars)
+    except KeyError as var:
+        try:
+            return s.format(**os.environ)
+        except KeyError:
+            raise AttributeError(f'{var}') from None
+
+def _extend_dict(target_dict, other_dict):
+    target_keys = target_dict.keys()
+    for key, value in other_dict.items():
+        if key in target_keys:
+            continue
+        target_dict[key] = value
+
+
+def _expand_vars(scheme, vars):
+    res = {}
+    if vars is None:
+        vars = {}
+    _extend_dict(vars, get_config_vars())
+    if os.name == 'nt':
+        # On Windows we want to substitute 'lib' for schemes rather
+        # than the native value (without modifying vars, in case it
+        # was passed in)
+        vars = vars | {'platlibdir': 'lib'}
+
+    for key, value in _INSTALL_SCHEMES[scheme].items():
+        if os.name in ('posix', 'nt'):
+            value = os.path.expanduser(value)
+        res[key] = os.path.normpath(_subst_vars(value, vars))
+    return res
+
+
+def _get_preferred_schemes():
+    if os.name == 'nt':
+        return {
+            'prefix': 'nt',
+            'home': 'posix_home',
+            'user': 'nt_user',
+        }
+    if sys.platform == 'darwin' and sys._framework:
+        return {
+            'prefix': 'posix_prefix',
+            'home': 'posix_home',
+            'user': 'osx_framework_user',
+        }
+    return {
+        'prefix': 'posix_prefix',
+        'home': 'posix_home',
+        'user': 'posix_user',
+    }
+
+
+def get_preferred_scheme(key):
+    if key == 'prefix' and sys.prefix != sys.base_prefix:
+        return 'venv'
+    scheme = _get_preferred_schemes()[key]
+    if scheme not in _INSTALL_SCHEMES:
+        raise ValueError(
+            f"{key!r} returned {scheme!r}, which is not a valid scheme "
+            f"on this platform"
+        )
+    return scheme
+
+
+def get_default_scheme():
+    return get_preferred_scheme('prefix')
+
+
+def get_makefile_filename():
+    """Return the path of the Makefile."""
+    if _PYTHON_BUILD:
+        return os.path.join(_PROJECT_BASE, "Makefile")
+    if hasattr(sys, 'abiflags'):
+        config_dir_name = f'config-{_PY_VERSION_SHORT}{sys.abiflags}'
+    else:
+        config_dir_name = 'config'
+    if hasattr(sys.implementation, '_multiarch'):
+        config_dir_name += f'-{sys.implementation._multiarch}'
+    return os.path.join(get_path('stdlib'), config_dir_name, 'Makefile')
+
+
+def _get_sysconfigdata_name():
+    multiarch = getattr(sys.implementation, '_multiarch', '')
+    return os.environ.get(
+        '_PYTHON_SYSCONFIGDATA_NAME',
+        f'_sysconfigdata_{sys.abiflags}_{sys.platform}_{multiarch}',
+    )
+
+def _init_posix(vars):
+    """Initialize the module as appropriate for POSIX systems."""
+    # _sysconfigdata is generated at build time, see _generate_posix_vars()
+    name = _get_sysconfigdata_name()
+    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
+    build_time_vars = _temp.build_time_vars
+    vars.update(build_time_vars)
+
+def _init_non_posix(vars):
+    """Initialize the module as appropriate for NT"""
+    # set basic install directories
+    import _winapi
+    import _sysconfig
+    vars['LIBDEST'] = get_path('stdlib')
+    vars['BINLIBDEST'] = get_path('platstdlib')
+    vars['INCLUDEPY'] = get_path('include')
+
+    # Add EXT_SUFFIX, SOABI, and Py_GIL_DISABLED
+    vars.update(_sysconfig.config_vars())
+
+    vars['LIBDIR'] = _safe_realpath(os.path.join(get_config_var('installed_base'), 'libs'))
+    if hasattr(sys, 'dllhandle'):
+        dllhandle = _winapi.GetModuleFileName(sys.dllhandle)
+        vars['LIBRARY'] = os.path.basename(_safe_realpath(dllhandle))
+        vars['LDLIBRARY'] = vars['LIBRARY']
+    vars['EXE'] = '.exe'
+    vars['VERSION'] = _PY_VERSION_SHORT_NO_DOT
+    vars['BINDIR'] = os.path.dirname(_safe_realpath(sys.executable))
+    vars['TZPATH'] = ''
+
+#
+# public APIs
+#
+
+
+def parse_config_h(fp, vars=None):
+    """Parse a config.h-style file.
+
+    A dictionary containing name/value pairs is returned.  If an
+    optional dictionary is passed in as the second argument, it is
+    used instead of a new dictionary.
+    """
+    if vars is None:
+        vars = {}
+    import re
+    define_rx = re.compile("#define ([A-Z][A-Za-z0-9_]+) (.*)\n")
+    undef_rx = re.compile("/[*] #undef ([A-Z][A-Za-z0-9_]+) [*]/\n")
+
+    while True:
+        line = fp.readline()
+        if not line:
+            break
+        m = define_rx.match(line)
+        if m:
+            n, v = m.group(1, 2)
+            try:
+                if n in _ALWAYS_STR:
+                    raise ValueError
+                v = int(v)
+            except ValueError:
+                pass
+            vars[n] = v
+        else:
+            m = undef_rx.match(line)
+            if m:
+                vars[m.group(1)] = 0
+    return vars
+
+
+def get_config_h_filename():
+    """Return the path of pyconfig.h."""
+    if _PYTHON_BUILD:
+        if os.name == "nt":
+            inc_dir = os.path.join(_PROJECT_BASE, "PC")
+        else:
+            inc_dir = _PROJECT_BASE
+    else:
+        inc_dir = get_path('platinclude')
+    return os.path.join(inc_dir, 'pyconfig.h')
+
+
+def get_scheme_names():
+    """Return a tuple containing the schemes names."""
+    return tuple(sorted(_INSTALL_SCHEMES))
+
+
+def get_path_names():
+    """Return a tuple containing the paths names."""
+    return _SCHEME_KEYS
+
+
+def get_paths(scheme=get_default_scheme(), vars=None, expand=True):
+    """Return a mapping containing an install scheme.
+
+    ``scheme`` is the install scheme name. If not provided, it will
+    return the default scheme for the current platform.
+    """
+    if expand:
+        return _expand_vars(scheme, vars)
+    else:
+        return _INSTALL_SCHEMES[scheme]
+
+
+def get_path(name, scheme=get_default_scheme(), vars=None, expand=True):
+    """Return a path corresponding to the scheme.
+
+    ``scheme`` is the install scheme name.
+    """
+    return get_paths(scheme, vars, expand)[name]
+
+
+def _init_config_vars():
+    global _CONFIG_VARS
+    _CONFIG_VARS = {}
+    # Normalized versions of prefix and exec_prefix are handy to have;
+    # in fact, these are the standard versions used most places in the
+    # Distutils.
+    _CONFIG_VARS['prefix'] = _PREFIX
+    _CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX
+    _CONFIG_VARS['py_version'] = _PY_VERSION
+    _CONFIG_VARS['py_version_short'] = _PY_VERSION_SHORT
+    _CONFIG_VARS['py_version_nodot'] = _PY_VERSION_SHORT_NO_DOT
+    _CONFIG_VARS['installed_base'] = _BASE_PREFIX
+    _CONFIG_VARS['base'] = _PREFIX
+    _CONFIG_VARS['installed_platbase'] = _BASE_EXEC_PREFIX
+    _CONFIG_VARS['platbase'] = _EXEC_PREFIX
+    _CONFIG_VARS['projectbase'] = _PROJECT_BASE
+    _CONFIG_VARS['platlibdir'] = sys.platlibdir
+    try:
+        _CONFIG_VARS['abiflags'] = sys.abiflags
+    except AttributeError:
+        # sys.abiflags may not be defined on all platforms.
+        _CONFIG_VARS['abiflags'] = ''
+    try:
+        _CONFIG_VARS['py_version_nodot_plat'] = sys.winver.replace('.', '')
+    except AttributeError:
+        _CONFIG_VARS['py_version_nodot_plat'] = ''
+
+    if os.name == 'nt':
+        _init_non_posix(_CONFIG_VARS)
+        _CONFIG_VARS['VPATH'] = sys._vpath
+    if os.name == 'posix':
+        _init_posix(_CONFIG_VARS)
+    if _HAS_USER_BASE:
+        # Setting 'userbase' is done below the call to the
+        # init function to enable using 'get_config_var' in
+        # the init-function.
+        _CONFIG_VARS['userbase'] = _getuserbase()
+
+    # Always convert srcdir to an absolute path
+    srcdir = _CONFIG_VARS.get('srcdir', _PROJECT_BASE)
+    if os.name == 'posix':
+        if _PYTHON_BUILD:
+            # If srcdir is a relative path (typically '.' or '..')
+            # then it should be interpreted relative to the directory
+            # containing Makefile.
+            base = os.path.dirname(get_makefile_filename())
+            srcdir = os.path.join(base, srcdir)
+        else:
+            # srcdir is not meaningful since the installation is
+            # spread about the filesystem.  We choose the
+            # directory containing the Makefile since we know it
+            # exists.
+            srcdir = os.path.dirname(get_makefile_filename())
+    _CONFIG_VARS['srcdir'] = _safe_realpath(srcdir)
+
+    # OS X platforms require special customization to handle
+    # multi-architecture, multi-os-version installers
+    if sys.platform == 'darwin':
+        import _osx_support
+        _osx_support.customize_config_vars(_CONFIG_VARS)
+
+    global _CONFIG_VARS_INITIALIZED
+    _CONFIG_VARS_INITIALIZED = True
+
+
+def get_config_vars(*args):
+    """With no arguments, return a dictionary of all configuration
+    variables relevant for the current platform.
+
+    On Unix, this means every variable defined in Python's installed Makefile;
+    On Windows it's a much smaller set.
+
+    With arguments, return a list of values that result from looking up
+    each argument in the configuration variable dictionary.
+    """
+
+    # Avoid claiming the lock once initialization is complete.
+    if not _CONFIG_VARS_INITIALIZED:
+        with _CONFIG_VARS_LOCK:
+            # Test again with the lock held to avoid races. Note that
+            # we test _CONFIG_VARS here, not _CONFIG_VARS_INITIALIZED,
+            # to ensure that recursive calls to get_config_vars()
+            # don't re-enter init_config_vars().
+            if _CONFIG_VARS is None:
+                _init_config_vars()
+
+    if args:
+        vals = []
+        for name in args:
+            vals.append(_CONFIG_VARS.get(name))
+        return vals
+    else:
+        return _CONFIG_VARS
+
+
+def get_config_var(name):
+    """Return the value of a single variable using the dictionary returned by
+    'get_config_vars()'.
+
+    Equivalent to get_config_vars().get(name)
+    """
+    return get_config_vars().get(name)
+
+
+def get_platform():
+    """Return a string that identifies the current platform.
+
+    This is used mainly to distinguish platform-specific build directories and
+    platform-specific built distributions.  Typically includes the OS name and
+    version and the architecture (as supplied by 'os.uname()'), although the
+    exact information included depends on the OS; on Linux, the kernel version
+    isn't particularly important.
+
+    Examples of returned values:
+       linux-i586
+       linux-alpha (?)
+       solaris-2.6-sun4u
+
+    Windows will return one of:
+       win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
+       win32 (all others - specifically, sys.platform is returned)
+
+    For other non-POSIX platforms, currently just returns 'sys.platform'.
+
+    """
+    if os.name == 'nt':
+        if 'amd64' in sys.version.lower():
+            return 'win-amd64'
+        if '(arm)' in sys.version.lower():
+            return 'win-arm32'
+        if '(arm64)' in sys.version.lower():
+            return 'win-arm64'
+        return sys.platform
+
+    if os.name != "posix" or not hasattr(os, 'uname'):
+        # XXX what about the architecture? NT is Intel or Alpha
+        return sys.platform
+
+    # Set for cross builds explicitly
+    if "_PYTHON_HOST_PLATFORM" in os.environ:
+        return os.environ["_PYTHON_HOST_PLATFORM"]
+
+    # Try to distinguish various flavours of Unix
+    osname, host, release, version, machine = os.uname()
+
+    # Convert the OS name to lowercase, remove '/' characters, and translate
+    # spaces (for "Power Macintosh")
+    osname = osname.lower().replace('/', '')
+    machine = machine.replace(' ', '_')
+    machine = machine.replace('/', '-')
+
+    if osname[:5] == "linux":
+        # At least on Linux/Intel, 'machine' is the processor --
+        # i386, etc.
+        # XXX what about Alpha, SPARC, etc?
+        return  f"{osname}-{machine}"
+    elif osname[:5] == "sunos":
+        if release[0] >= "5":           # SunOS 5 == Solaris 2
+            osname = "solaris"
+            release = f"{int(release[0]) - 3}.{release[2:]}"
+            # We can't use "platform.architecture()[0]" because a
+            # bootstrap problem. We use a dict to get an error
+            # if some suspicious happens.
+            bitness = {2147483647:"32bit", 9223372036854775807:"64bit"}
+            machine += f".{bitness[sys.maxsize]}"
+        # fall through to standard osname-release-machine representation
+    elif osname[:3] == "aix":
+        from _aix_support import aix_platform
+        return aix_platform()
+    elif osname[:6] == "cygwin":
+        osname = "cygwin"
+        import re
+        rel_re = re.compile(r'[\d.]+')
+        m = rel_re.match(release)
+        if m:
+            release = m.group()
+    elif osname[:6] == "darwin":
+        import _osx_support
+        osname, release, machine = _osx_support.get_platform_osx(
+                                            get_config_vars(),
+                                            osname, release, machine)
+
+    return f"{osname}-{release}-{machine}"
+
+
+def get_python_version():
+    return _PY_VERSION_SHORT
+
+
+def expand_makefile_vars(s, vars):
+    """Expand Makefile-style variables -- "${foo}" or "$(foo)" -- in
+    'string' according to 'vars' (a dictionary mapping variable names to
+    values).  Variables not present in 'vars' are silently expanded to the
+    empty string.  The variable values in 'vars' should not contain further
+    variable expansions; if 'vars' is the output of 'parse_makefile()',
+    you're fine.  Returns a variable-expanded version of 's'.
+    """
+    import re
+
+    # This algorithm does multiple expansion, so if vars['foo'] contains
+    # "${bar}", it will expand ${foo} to ${bar}, and then expand
+    # ${bar}... and so forth.  This is fine as long as 'vars' comes from
+    # 'parse_makefile()', which takes care of such expansions eagerly,
+    # according to make's variable expansion semantics.
+
+    while True:
+        m = re.search(_findvar1_rx, s) or re.search(_findvar2_rx, s)
+        if m:
+            (beg, end) = m.span()
+            s = s[0:beg] + vars.get(m.group(1)) + s[end:]
+        else:
+            break
+    return s
diff --git a/Lib/sysconfig/__main__.py b/Lib/sysconfig/__main__.py
new file mode 100644
index 00000000000000..d7257b9d2d00db
--- /dev/null
+++ b/Lib/sysconfig/__main__.py
@@ -0,0 +1,248 @@
+import os
+import sys
+from sysconfig import (
+    _ALWAYS_STR,
+    _PYTHON_BUILD,
+    _get_sysconfigdata_name,
+    get_config_h_filename,
+    get_config_vars,
+    get_default_scheme,
+    get_makefile_filename,
+    get_paths,
+    get_platform,
+    get_python_version,
+    parse_config_h,
+)
+
+
+# Regexes needed for parsing Makefile (and similar syntaxes,
+# like old-style Setup files).
+_variable_rx = r"([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)"
+_findvar1_rx = r"\$\(([A-Za-z][A-Za-z0-9_]*)\)"
+_findvar2_rx = r"\${([A-Za-z][A-Za-z0-9_]*)}"
+
+
+def _parse_makefile(filename, vars=None, keep_unresolved=True):
+    """Parse a Makefile-style file.
+
+    A dictionary containing name/value pairs is returned.  If an
+    optional dictionary is passed in as the second argument, it is
+    used instead of a new dictionary.
+    """
+    import re
+
+    if vars is None:
+        vars = {}
+    done = {}
+    notdone = {}
+
+    with open(filename, encoding=sys.getfilesystemencoding(),
+              errors="surrogateescape") as f:
+        lines = f.readlines()
+
+    for line in lines:
+        if line.startswith('#') or line.strip() == '':
+            continue
+        m = re.match(_variable_rx, line)
+        if m:
+            n, v = m.group(1, 2)
+            v = v.strip()
+            # `$$' is a literal `$' in make
+            tmpv = v.replace('$$', '')
+
+            if "$" in tmpv:
+                notdone[n] = v
+            else:
+                try:
+                    if n in _ALWAYS_STR:
+                        raise ValueError
+
+                    v = int(v)
+                except ValueError:
+                    # insert literal `$'
+                    done[n] = v.replace('$$', '$')
+                else:
+                    done[n] = v
+
+    # do variable interpolation here
+    variables = list(notdone.keys())
+
+    # Variables with a 'PY_' prefix in the makefile. These need to
+    # be made available without that prefix through sysconfig.
+    # Special care is needed to ensure that variable expansion works, even
+    # if the expansion uses the name without a prefix.
+    renamed_variables = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS')
+
+    while len(variables) > 0:
+        for name in tuple(variables):
+            value = notdone[name]
+            m1 = re.search(_findvar1_rx, value)
+            m2 = re.search(_findvar2_rx, value)
+            if m1 and m2:
+                m = m1 if m1.start() < m2.start() else m2
+            else:
+                m = m1 if m1 else m2
+            if m is not None:
+                n = m.group(1)
+                found = True
+                if n in done:
+                    item = str(done[n])
+                elif n in notdone:
+                    # get it on a subsequent round
+                    found = False
+                elif n in os.environ:
+                    # do it like make: fall back to environment
+                    item = os.environ[n]
+
+                elif n in renamed_variables:
+                    if (name.startswith('PY_') and
+                        name[3:] in renamed_variables):
+                        item = ""
+
+                    elif 'PY_' + n in notdone:
+                        found = False
+
+                    else:
+                        item = str(done['PY_' + n])
+
+                else:
+                    done[n] = item = ""
+
+                if found:
+                    after = value[m.end():]
+                    value = value[:m.start()] + item + after
+                    if "$" in after:
+                        notdone[name] = value
+                    else:
+                        try:
+                            if name in _ALWAYS_STR:
+                                raise ValueError
+                            value = int(value)
+                        except ValueError:
+                            done[name] = value.strip()
+                        else:
+                            done[name] = value
+                        variables.remove(name)
+
+                        if name.startswith('PY_') \
+                        and name[3:] in renamed_variables:
+
+                            name = name[3:]
+                            if name not in done:
+                                done[name] = value
+
+            else:
+                # Adds unresolved variables to the done dict.
+                # This is disabled when called from distutils.sysconfig
+                if keep_unresolved:
+                    done[name] = value
+                # bogus variable reference (e.g. "prefix=$/opt/python");
+                # just drop it since we can't deal
+                variables.remove(name)
+
+    # strip spurious spaces
+    for k, v in done.items():
+        if isinstance(v, str):
+            done[k] = v.strip()
+
+    # save the results in the global dictionary
+    vars.update(done)
+    return vars
+
+
+def _print_config_dict(d, stream):
+    print ("{", file=stream)
+    for k, v in sorted(d.items()):
+        print(f"    {k!r}: {v!r},", file=stream)
+    print ("}", file=stream)
+
+
+def _generate_posix_vars():
+    """Generate the Python module containing build-time variables."""
+    vars = {}
+    # load the installed Makefile:
+    makefile = get_makefile_filename()
+    try:
+        _parse_makefile(makefile, vars)
+    except OSError as e:
+        msg = f"invalid Python installation: unable to open {makefile}"
+        if hasattr(e, "strerror"):
+            msg = f"{msg} ({e.strerror})"
+        raise OSError(msg)
+    # load the installed pyconfig.h:
+    config_h = get_config_h_filename()
+    try:
+        with open(config_h, encoding="utf-8") as f:
+            parse_config_h(f, vars)
+    except OSError as e:
+        msg = f"invalid Python installation: unable to open {config_h}"
+        if hasattr(e, "strerror"):
+            msg = f"{msg} ({e.strerror})"
+        raise OSError(msg)
+    # On AIX, there are wrong paths to the linker scripts in the Makefile
+    # -- these paths are relative to the Python source, but when installed
+    # the scripts are in another directory.
+    if _PYTHON_BUILD:
+        vars['BLDSHARED'] = vars['LDSHARED']
+
+    # There's a chicken-and-egg situation on OS X with regards to the
+    # _sysconfigdata module after the changes introduced by #15298:
+    # get_config_vars() is called by get_platform() as part of the
+    # `make pybuilddir.txt` target -- which is a precursor to the
+    # _sysconfigdata.py module being constructed.  Unfortunately,
+    # get_config_vars() eventually calls _init_posix(), which attempts
+    # to import _sysconfigdata, which we won't have built yet.  In order
+    # for _init_posix() to work, if we're on Darwin, just mock up the
+    # _sysconfigdata module manually and populate it with the build vars.
+    # This is more than sufficient for ensuring the subsequent call to
+    # get_platform() succeeds.
+    name = _get_sysconfigdata_name()
+    if 'darwin' in sys.platform:
+        import types
+        module = types.ModuleType(name)
+        module.build_time_vars = vars
+        sys.modules[name] = module
+
+    pybuilddir = f'build/lib.{get_platform()}-{get_python_version()}'
+    if hasattr(sys, "gettotalrefcount"):
+        pybuilddir += '-pydebug'
+    os.makedirs(pybuilddir, exist_ok=True)
+    destfile = os.path.join(pybuilddir, name + '.py')
+
+    with open(destfile, 'w', encoding='utf8') as f:
+        f.write('# system configuration generated and used by'
+                ' the sysconfig module\n')
+        f.write('build_time_vars = ')
+        _print_config_dict(vars, stream=f)
+
+    # Create file used for sys.path fixup -- see Modules/getpath.c
+    with open('pybuilddir.txt', 'w', encoding='utf8') as f:
+        f.write(pybuilddir)
+
+
+def _print_dict(title, data):
+    for index, (key, value) in enumerate(sorted(data.items())):
+        if index == 0:
+            print(f'{title}: ')
+        print(f'\t{key} = "{value}"')
+
+
+def _main():
+    """Display all information sysconfig detains."""
+    if '--generate-posix-vars' in sys.argv:
+        _generate_posix_vars()
+        return
+    print(f'Platform: "{get_platform()}"')
+    print(f'Python version: "{get_python_version()}"')
+    print(f'Current installation scheme: "{get_default_scheme()}"')
+    print()
+    _print_dict('Paths', get_paths())
+    print()
+    _print_dict('Variables', get_config_vars())
+
+
+if __name__ == '__main__':
+    try:
+        _main()
+    except BrokenPipeError:
+        pass
diff --git a/Lib/tabnanny.py b/Lib/tabnanny.py
index 9d2df59d36ff47..e2ac6837f157d5 100755
--- a/Lib/tabnanny.py
+++ b/Lib/tabnanny.py
@@ -107,6 +107,10 @@ def check(file):
         errprint("%r: Token Error: %s" % (file, msg))
         return
 
+    except SyntaxError as msg:
+        errprint("%r: Token Error: %s" % (file, msg))
+        return
+
     except IndentationError as msg:
         errprint("%r: Indentation Error: %s" % (file, msg))
         return
@@ -272,6 +276,12 @@ def format_witnesses(w):
     return prefix + " " + ', '.join(firsts)
 
 def process_tokens(tokens):
+    try:
+        _process_tokens(tokens)
+    except TabError as e:
+        raise NannyNag(e.lineno, e.msg, e.text)
+
+def _process_tokens(tokens):
     INDENT = tokenize.INDENT
     DEDENT = tokenize.DEDENT
     NEWLINE = tokenize.NEWLINE
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 7781a430839ea5..ec32f9ba49b03f 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -46,7 +46,6 @@
 import struct
 import copy
 import re
-import warnings
 
 try:
     import pwd
@@ -372,8 +371,8 @@ def __init__(self, name, mode, comptype, fileobj, bufsize,
                 self.zlib = zlib
                 self.crc = zlib.crc32(b"")
                 if mode == "r":
-                    self._init_read_gz()
                     self.exception = zlib.error
+                    self._init_read_gz()
                 else:
                     self._init_write_gz(compresslevel)
 
@@ -742,7 +741,7 @@ def __init__(self, tarinfo):
 class AbsoluteLinkError(FilterError):
     def __init__(self, tarinfo):
         self.tarinfo = tarinfo
-        super().__init__(f'{tarinfo.name!r} is a symlink to an absolute path')
+        super().__init__(f'{tarinfo.name!r} is a link to an absolute path')
 
 class LinkOutsideDestinationError(FilterError):
     def __init__(self, tarinfo, path):
@@ -802,7 +801,14 @@ def _get_filtered_attrs(member, dest_path, for_data=True):
         if member.islnk() or member.issym():
             if os.path.isabs(member.linkname):
                 raise AbsoluteLinkError(member)
-            target_path = os.path.realpath(os.path.join(dest_path, member.linkname))
+            if member.issym():
+                target_path = os.path.join(dest_path,
+                                           os.path.dirname(name),
+                                           member.linkname)
+            else:
+                target_path = os.path.join(dest_path,
+                                           member.linkname)
+            target_path = os.path.realpath(target_path)
             if os.path.commonpath([target_path, dest_path]) != dest_path:
                 raise LinkOutsideDestinationError(member, target_path)
     return new_attrs
@@ -1633,7 +1639,7 @@ class TarFile(object):
     def __init__(self, name=None, mode="r", fileobj=None, format=None,
             tarinfo=None, dereference=None, ignore_zeros=None, encoding=None,
             errors="surrogateescape", pax_headers=None, debug=None,
-            errorlevel=None, copybufsize=None):
+            errorlevel=None, copybufsize=None, stream=False):
         """Open an (uncompressed) tar archive `name'. `mode' is either 'r' to
            read from an existing archive, 'a' to append data to an existing
            file or 'w' to create a new file overwriting an existing one. `mode'
@@ -1665,6 +1671,8 @@ def __init__(self, name=None, mode="r", fileobj=None, format=None,
         self.name = os.path.abspath(name) if name else None
         self.fileobj = fileobj
 
+        self.stream = stream
+
         # Init attributes.
         if format is not None:
             self.format = format
@@ -2210,6 +2218,7 @@ def _get_filter_function(self, filter):
         if filter is None:
             filter = self.extraction_filter
             if filter is None:
+                import warnings
                 warnings.warn(
                     'Python 3.14 will, by default, filter extracted tar '
                     + 'archives and reject files or modify their metadata. '
@@ -2548,7 +2557,8 @@ def chown(self, tarinfo, targetpath, numeric_owner):
                     os.lchown(targetpath, u, g)
                 else:
                     os.chown(targetpath, u, g)
-            except OSError as e:
+            except (OSError, OverflowError) as e:
+                # OverflowError can be raised if an ID doesn't fit in `id_t`
                 raise ExtractError("could not change owner") from e
 
     def chmod(self, tarinfo, targetpath):
@@ -2631,7 +2641,9 @@ def next(self):
             break
 
         if tarinfo is not None:
-            self.members.append(tarinfo)
+            # if streaming the file we do not want to cache the tarinfo
+            if not self.stream:
+                self.members.append(tarinfo)
         else:
             self._loaded = True
 
@@ -2682,11 +2694,12 @@ def _getmember(self, name, tarinfo=None, normalize=False):
 
     def _load(self):
         """Read through the entire archive file and look for readable
-           members.
+           members. This should not run if the file is set to stream.
         """
-        while self.next() is not None:
-            pass
-        self._loaded = True
+        if not self.stream:
+            while self.next() is not None:
+                pass
+            self._loaded = True
 
     def _check(self, mode=None):
         """Check if TarFile is still open, and if the operation's mode
diff --git a/Lib/telnetlib.py b/Lib/telnetlib.py
deleted file mode 100644
index 62d636129853ad..00000000000000
--- a/Lib/telnetlib.py
+++ /dev/null
@@ -1,679 +0,0 @@
-r"""TELNET client class.
-
-Based on RFC 854: TELNET Protocol Specification, by J. Postel and
-J. Reynolds
-
-Example:
-
->>> from telnetlib import Telnet
->>> tn = Telnet('www.python.org', 79)   # connect to finger port
->>> tn.write(b'guido\r\n')
->>> print(tn.read_all())
-Login       Name               TTY         Idle    When    Where
-guido    Guido van Rossum      pts/2        <Dec  2 11:10> snag.cnri.reston..
-
->>>
-
-Note that read_all() won't read until eof -- it just reads some data
--- but it guarantees to read at least one byte unless EOF is hit.
-
-It is possible to pass a Telnet object to a selector in order to wait until
-more data is available.  Note that in this case, read_eager() may return b''
-even if there was data on the socket, because the protocol negotiation may have
-eaten the data.  This is why EOFError is needed in some cases to distinguish
-between "no data" and "connection closed" (since the socket also appears ready
-for reading when it is closed).
-
-To do:
-- option negotiation
-- timeout should be intrinsic to the connection object instead of an
-  option on one of the read calls only
-
-"""
-
-
-# Imported modules
-import sys
-import socket
-import selectors
-from time import monotonic as _time
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-__all__ = ["Telnet"]
-
-# Tunable parameters
-DEBUGLEVEL = 0
-
-# Telnet protocol defaults
-TELNET_PORT = 23
-
-# Telnet protocol characters (don't change)
-IAC  = bytes([255]) # "Interpret As Command"
-DONT = bytes([254])
-DO   = bytes([253])
-WONT = bytes([252])
-WILL = bytes([251])
-theNULL = bytes([0])
-
-SE  = bytes([240])  # Subnegotiation End
-NOP = bytes([241])  # No Operation
-DM  = bytes([242])  # Data Mark
-BRK = bytes([243])  # Break
-IP  = bytes([244])  # Interrupt process
-AO  = bytes([245])  # Abort output
-AYT = bytes([246])  # Are You There
-EC  = bytes([247])  # Erase Character
-EL  = bytes([248])  # Erase Line
-GA  = bytes([249])  # Go Ahead
-SB =  bytes([250])  # Subnegotiation Begin
-
-
-# Telnet protocol options code (don't change)
-# These ones all come from arpa/telnet.h
-BINARY = bytes([0]) # 8-bit data path
-ECHO = bytes([1]) # echo
-RCP = bytes([2]) # prepare to reconnect
-SGA = bytes([3]) # suppress go ahead
-NAMS = bytes([4]) # approximate message size
-STATUS = bytes([5]) # give status
-TM = bytes([6]) # timing mark
-RCTE = bytes([7]) # remote controlled transmission and echo
-NAOL = bytes([8]) # negotiate about output line width
-NAOP = bytes([9]) # negotiate about output page size
-NAOCRD = bytes([10]) # negotiate about CR disposition
-NAOHTS = bytes([11]) # negotiate about horizontal tabstops
-NAOHTD = bytes([12]) # negotiate about horizontal tab disposition
-NAOFFD = bytes([13]) # negotiate about formfeed disposition
-NAOVTS = bytes([14]) # negotiate about vertical tab stops
-NAOVTD = bytes([15]) # negotiate about vertical tab disposition
-NAOLFD = bytes([16]) # negotiate about output LF disposition
-XASCII = bytes([17]) # extended ascii character set
-LOGOUT = bytes([18]) # force logout
-BM = bytes([19]) # byte macro
-DET = bytes([20]) # data entry terminal
-SUPDUP = bytes([21]) # supdup protocol
-SUPDUPOUTPUT = bytes([22]) # supdup output
-SNDLOC = bytes([23]) # send location
-TTYPE = bytes([24]) # terminal type
-EOR = bytes([25]) # end or record
-TUID = bytes([26]) # TACACS user identification
-OUTMRK = bytes([27]) # output marking
-TTYLOC = bytes([28]) # terminal location number
-VT3270REGIME = bytes([29]) # 3270 regime
-X3PAD = bytes([30]) # X.3 PAD
-NAWS = bytes([31]) # window size
-TSPEED = bytes([32]) # terminal speed
-LFLOW = bytes([33]) # remote flow control
-LINEMODE = bytes([34]) # Linemode option
-XDISPLOC = bytes([35]) # X Display Location
-OLD_ENVIRON = bytes([36]) # Old - Environment variables
-AUTHENTICATION = bytes([37]) # Authenticate
-ENCRYPT = bytes([38]) # Encryption option
-NEW_ENVIRON = bytes([39]) # New - Environment variables
-# the following ones come from
-# http://www.iana.org/assignments/telnet-options
-# Unfortunately, that document does not assign identifiers
-# to all of them, so we are making them up
-TN3270E = bytes([40]) # TN3270E
-XAUTH = bytes([41]) # XAUTH
-CHARSET = bytes([42]) # CHARSET
-RSP = bytes([43]) # Telnet Remote Serial Port
-COM_PORT_OPTION = bytes([44]) # Com Port Control Option
-SUPPRESS_LOCAL_ECHO = bytes([45]) # Telnet Suppress Local Echo
-TLS = bytes([46]) # Telnet Start TLS
-KERMIT = bytes([47]) # KERMIT
-SEND_URL = bytes([48]) # SEND-URL
-FORWARD_X = bytes([49]) # FORWARD_X
-PRAGMA_LOGON = bytes([138]) # TELOPT PRAGMA LOGON
-SSPI_LOGON = bytes([139]) # TELOPT SSPI LOGON
-PRAGMA_HEARTBEAT = bytes([140]) # TELOPT PRAGMA HEARTBEAT
-EXOPL = bytes([255]) # Extended-Options-List
-NOOPT = bytes([0])
-
-
-# poll/select have the advantage of not requiring any extra file descriptor,
-# contrarily to epoll/kqueue (also, they require a single syscall).
-if hasattr(selectors, 'PollSelector'):
-    _TelnetSelector = selectors.PollSelector
-else:
-    _TelnetSelector = selectors.SelectSelector
-
-
-class Telnet:
-
-    """Telnet interface class.
-
-    An instance of this class represents a connection to a telnet
-    server.  The instance is initially not connected; the open()
-    method must be used to establish a connection.  Alternatively, the
-    host name and optional port number can be passed to the
-    constructor, too.
-
-    Don't try to reopen an already connected instance.
-
-    This class has many read_*() methods.  Note that some of them
-    raise EOFError when the end of the connection is read, because
-    they can return an empty string for other reasons.  See the
-    individual doc strings.
-
-    read_until(expected, [timeout])
-        Read until the expected string has been seen, or a timeout is
-        hit (default is no timeout); may block.
-
-    read_all()
-        Read all data until EOF; may block.
-
-    read_some()
-        Read at least one byte or EOF; may block.
-
-    read_very_eager()
-        Read all data available already queued or on the socket,
-        without blocking.
-
-    read_eager()
-        Read either data already queued or some data available on the
-        socket, without blocking.
-
-    read_lazy()
-        Read all data in the raw queue (processing it first), without
-        doing any socket I/O.
-
-    read_very_lazy()
-        Reads all data in the cooked queue, without doing any socket
-        I/O.
-
-    read_sb_data()
-        Reads available data between SB ... SE sequence. Don't block.
-
-    set_option_negotiation_callback(callback)
-        Each time a telnet option is read on the input flow, this callback
-        (if set) is called with the following parameters :
-        callback(telnet socket, command, option)
-            option will be chr(0) when there is no option.
-        No other action is done afterwards by telnetlib.
-
-    """
-
-    def __init__(self, host=None, port=0,
-                 timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
-        """Constructor.
-
-        When called without arguments, create an unconnected instance.
-        With a hostname argument, it connects the instance; port number
-        and timeout are optional.
-        """
-        self.debuglevel = DEBUGLEVEL
-        self.host = host
-        self.port = port
-        self.timeout = timeout
-        self.sock = None
-        self.rawq = b''
-        self.irawq = 0
-        self.cookedq = b''
-        self.eof = 0
-        self.iacseq = b'' # Buffer for IAC sequence.
-        self.sb = 0 # flag for SB and SE sequence.
-        self.sbdataq = b''
-        self.option_callback = None
-        if host is not None:
-            self.open(host, port, timeout)
-
-    def open(self, host, port=0, timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
-        """Connect to a host.
-
-        The optional second argument is the port number, which
-        defaults to the standard telnet port (23).
-
-        Don't try to reopen an already connected instance.
-        """
-        self.eof = 0
-        if not port:
-            port = TELNET_PORT
-        self.host = host
-        self.port = port
-        self.timeout = timeout
-        sys.audit("telnetlib.Telnet.open", self, host, port)
-        self.sock = socket.create_connection((host, port), timeout)
-
-    def __del__(self):
-        """Destructor -- close the connection."""
-        self.close()
-
-    def msg(self, msg, *args):
-        """Print a debug message, when the debug level is > 0.
-
-        If extra arguments are present, they are substituted in the
-        message using the standard string formatting operator.
-
-        """
-        if self.debuglevel > 0:
-            print('Telnet(%s,%s):' % (self.host, self.port), end=' ')
-            if args:
-                print(msg % args)
-            else:
-                print(msg)
-
-    def set_debuglevel(self, debuglevel):
-        """Set the debug level.
-
-        The higher it is, the more debug output you get (on sys.stdout).
-
-        """
-        self.debuglevel = debuglevel
-
-    def close(self):
-        """Close the connection."""
-        sock = self.sock
-        self.sock = None
-        self.eof = True
-        self.iacseq = b''
-        self.sb = 0
-        if sock:
-            sock.close()
-
-    def get_socket(self):
-        """Return the socket object used internally."""
-        return self.sock
-
-    def fileno(self):
-        """Return the fileno() of the socket object used internally."""
-        return self.sock.fileno()
-
-    def write(self, buffer):
-        """Write a string to the socket, doubling any IAC characters.
-
-        Can block if the connection is blocked.  May raise
-        OSError if the connection is closed.
-
-        """
-        if IAC in buffer:
-            buffer = buffer.replace(IAC, IAC+IAC)
-        sys.audit("telnetlib.Telnet.write", self, buffer)
-        self.msg("send %r", buffer)
-        self.sock.sendall(buffer)
-
-    def read_until(self, match, timeout=None):
-        """Read until a given string is encountered or until timeout.
-
-        When no match is found, return whatever is available instead,
-        possibly the empty string.  Raise EOFError if the connection
-        is closed and no cooked data is available.
-
-        """
-        n = len(match)
-        self.process_rawq()
-        i = self.cookedq.find(match)
-        if i >= 0:
-            i = i+n
-            buf = self.cookedq[:i]
-            self.cookedq = self.cookedq[i:]
-            return buf
-        if timeout is not None:
-            deadline = _time() + timeout
-        with _TelnetSelector() as selector:
-            selector.register(self, selectors.EVENT_READ)
-            while not self.eof:
-                if selector.select(timeout):
-                    i = max(0, len(self.cookedq)-n)
-                    self.fill_rawq()
-                    self.process_rawq()
-                    i = self.cookedq.find(match, i)
-                    if i >= 0:
-                        i = i+n
-                        buf = self.cookedq[:i]
-                        self.cookedq = self.cookedq[i:]
-                        return buf
-                if timeout is not None:
-                    timeout = deadline - _time()
-                    if timeout < 0:
-                        break
-        return self.read_very_lazy()
-
-    def read_all(self):
-        """Read all data until EOF; block until connection closed."""
-        self.process_rawq()
-        while not self.eof:
-            self.fill_rawq()
-            self.process_rawq()
-        buf = self.cookedq
-        self.cookedq = b''
-        return buf
-
-    def read_some(self):
-        """Read at least one byte of cooked data unless EOF is hit.
-
-        Return b'' if EOF is hit.  Block if no data is immediately
-        available.
-
-        """
-        self.process_rawq()
-        while not self.cookedq and not self.eof:
-            self.fill_rawq()
-            self.process_rawq()
-        buf = self.cookedq
-        self.cookedq = b''
-        return buf
-
-    def read_very_eager(self):
-        """Read everything that's possible without blocking in I/O (eager).
-
-        Raise EOFError if connection closed and no cooked data
-        available.  Return b'' if no cooked data available otherwise.
-        Don't block unless in the midst of an IAC sequence.
-
-        """
-        self.process_rawq()
-        while not self.eof and self.sock_avail():
-            self.fill_rawq()
-            self.process_rawq()
-        return self.read_very_lazy()
-
-    def read_eager(self):
-        """Read readily available data.
-
-        Raise EOFError if connection closed and no cooked data
-        available.  Return b'' if no cooked data available otherwise.
-        Don't block unless in the midst of an IAC sequence.
-
-        """
-        self.process_rawq()
-        while not self.cookedq and not self.eof and self.sock_avail():
-            self.fill_rawq()
-            self.process_rawq()
-        return self.read_very_lazy()
-
-    def read_lazy(self):
-        """Process and return data that's already in the queues (lazy).
-
-        Raise EOFError if connection closed and no data available.
-        Return b'' if no cooked data available otherwise.  Don't block
-        unless in the midst of an IAC sequence.
-
-        """
-        self.process_rawq()
-        return self.read_very_lazy()
-
-    def read_very_lazy(self):
-        """Return any data available in the cooked queue (very lazy).
-
-        Raise EOFError if connection closed and no data available.
-        Return b'' if no cooked data available otherwise.  Don't block.
-
-        """
-        buf = self.cookedq
-        self.cookedq = b''
-        if not buf and self.eof and not self.rawq:
-            raise EOFError('telnet connection closed')
-        return buf
-
-    def read_sb_data(self):
-        """Return any data available in the SB ... SE queue.
-
-        Return b'' if no SB ... SE available. Should only be called
-        after seeing a SB or SE command. When a new SB command is
-        found, old unread SB data will be discarded. Don't block.
-
-        """
-        buf = self.sbdataq
-        self.sbdataq = b''
-        return buf
-
-    def set_option_negotiation_callback(self, callback):
-        """Provide a callback function called after each receipt of a telnet option."""
-        self.option_callback = callback
-
-    def process_rawq(self):
-        """Transfer from raw queue to cooked queue.
-
-        Set self.eof when connection is closed.  Don't block unless in
-        the midst of an IAC sequence.
-
-        """
-        buf = [b'', b'']
-        try:
-            while self.rawq:
-                c = self.rawq_getchar()
-                if not self.iacseq:
-                    if c == theNULL:
-                        continue
-                    if c == b"\021":
-                        continue
-                    if c != IAC:
-                        buf[self.sb] = buf[self.sb] + c
-                        continue
-                    else:
-                        self.iacseq += c
-                elif len(self.iacseq) == 1:
-                    # 'IAC: IAC CMD [OPTION only for WILL/WONT/DO/DONT]'
-                    if c in (DO, DONT, WILL, WONT):
-                        self.iacseq += c
-                        continue
-
-                    self.iacseq = b''
-                    if c == IAC:
-                        buf[self.sb] = buf[self.sb] + c
-                    else:
-                        if c == SB: # SB ... SE start.
-                            self.sb = 1
-                            self.sbdataq = b''
-                        elif c == SE:
-                            self.sb = 0
-                            self.sbdataq = self.sbdataq + buf[1]
-                            buf[1] = b''
-                        if self.option_callback:
-                            # Callback is supposed to look into
-                            # the sbdataq
-                            self.option_callback(self.sock, c, NOOPT)
-                        else:
-                            # We can't offer automatic processing of
-                            # suboptions. Alas, we should not get any
-                            # unless we did a WILL/DO before.
-                            self.msg('IAC %d not recognized' % ord(c))
-                elif len(self.iacseq) == 2:
-                    cmd = self.iacseq[1:2]
-                    self.iacseq = b''
-                    opt = c
-                    if cmd in (DO, DONT):
-                        self.msg('IAC %s %d',
-                            cmd == DO and 'DO' or 'DONT', ord(opt))
-                        if self.option_callback:
-                            self.option_callback(self.sock, cmd, opt)
-                        else:
-                            self.sock.sendall(IAC + WONT + opt)
-                    elif cmd in (WILL, WONT):
-                        self.msg('IAC %s %d',
-                            cmd == WILL and 'WILL' or 'WONT', ord(opt))
-                        if self.option_callback:
-                            self.option_callback(self.sock, cmd, opt)
-                        else:
-                            self.sock.sendall(IAC + DONT + opt)
-        except EOFError: # raised by self.rawq_getchar()
-            self.iacseq = b'' # Reset on EOF
-            self.sb = 0
-        self.cookedq = self.cookedq + buf[0]
-        self.sbdataq = self.sbdataq + buf[1]
-
-    def rawq_getchar(self):
-        """Get next char from raw queue.
-
-        Block if no data is immediately available.  Raise EOFError
-        when connection is closed.
-
-        """
-        if not self.rawq:
-            self.fill_rawq()
-            if self.eof:
-                raise EOFError
-        c = self.rawq[self.irawq:self.irawq+1]
-        self.irawq = self.irawq + 1
-        if self.irawq >= len(self.rawq):
-            self.rawq = b''
-            self.irawq = 0
-        return c
-
-    def fill_rawq(self):
-        """Fill raw queue from exactly one recv() system call.
-
-        Block if no data is immediately available.  Set self.eof when
-        connection is closed.
-
-        """
-        if self.irawq >= len(self.rawq):
-            self.rawq = b''
-            self.irawq = 0
-        # The buffer size should be fairly small so as to avoid quadratic
-        # behavior in process_rawq() above
-        buf = self.sock.recv(50)
-        self.msg("recv %r", buf)
-        self.eof = (not buf)
-        self.rawq = self.rawq + buf
-
-    def sock_avail(self):
-        """Test whether data is available on the socket."""
-        with _TelnetSelector() as selector:
-            selector.register(self, selectors.EVENT_READ)
-            return bool(selector.select(0))
-
-    def interact(self):
-        """Interaction function, emulates a very dumb telnet client."""
-        if sys.platform == "win32":
-            self.mt_interact()
-            return
-        with _TelnetSelector() as selector:
-            selector.register(self, selectors.EVENT_READ)
-            selector.register(sys.stdin, selectors.EVENT_READ)
-
-            while True:
-                for key, events in selector.select():
-                    if key.fileobj is self:
-                        try:
-                            text = self.read_eager()
-                        except EOFError:
-                            print('*** Connection closed by remote host ***')
-                            return
-                        if text:
-                            sys.stdout.write(text.decode('ascii'))
-                            sys.stdout.flush()
-                    elif key.fileobj is sys.stdin:
-                        line = sys.stdin.readline().encode('ascii')
-                        if not line:
-                            return
-                        self.write(line)
-
-    def mt_interact(self):
-        """Multithreaded version of interact()."""
-        import _thread
-        _thread.start_new_thread(self.listener, ())
-        while 1:
-            line = sys.stdin.readline()
-            if not line:
-                break
-            self.write(line.encode('ascii'))
-
-    def listener(self):
-        """Helper for mt_interact() -- this executes in the other thread."""
-        while 1:
-            try:
-                data = self.read_eager()
-            except EOFError:
-                print('*** Connection closed by remote host ***')
-                return
-            if data:
-                sys.stdout.write(data.decode('ascii'))
-            else:
-                sys.stdout.flush()
-
-    def expect(self, list, timeout=None):
-        """Read until one from a list of a regular expressions matches.
-
-        The first argument is a list of regular expressions, either
-        compiled (re.Pattern instances) or uncompiled (strings).
-        The optional second argument is a timeout, in seconds; default
-        is no timeout.
-
-        Return a tuple of three items: the index in the list of the
-        first regular expression that matches; the re.Match object
-        returned; and the text read up till and including the match.
-
-        If EOF is read and no text was read, raise EOFError.
-        Otherwise, when nothing matches, return (-1, None, text) where
-        text is the text received so far (may be the empty string if a
-        timeout happened).
-
-        If a regular expression ends with a greedy match (e.g. '.*')
-        or if more than one expression can match the same input, the
-        results are undeterministic, and may depend on the I/O timing.
-
-        """
-        re = None
-        list = list[:]
-        indices = range(len(list))
-        for i in indices:
-            if not hasattr(list[i], "search"):
-                if not re: import re
-                list[i] = re.compile(list[i])
-        if timeout is not None:
-            deadline = _time() + timeout
-        with _TelnetSelector() as selector:
-            selector.register(self, selectors.EVENT_READ)
-            while not self.eof:
-                self.process_rawq()
-                for i in indices:
-                    m = list[i].search(self.cookedq)
-                    if m:
-                        e = m.end()
-                        text = self.cookedq[:e]
-                        self.cookedq = self.cookedq[e:]
-                        return (i, m, text)
-                if timeout is not None:
-                    ready = selector.select(timeout)
-                    timeout = deadline - _time()
-                    if not ready:
-                        if timeout < 0:
-                            break
-                        else:
-                            continue
-                self.fill_rawq()
-        text = self.read_very_lazy()
-        if not text and self.eof:
-            raise EOFError
-        return (-1, None, text)
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, type, value, traceback):
-        self.close()
-
-
-def test():
-    """Test program for telnetlib.
-
-    Usage: python telnetlib.py [-d] ... [host [port]]
-
-    Default host is localhost; default port is 23.
-
-    """
-    debuglevel = 0
-    while sys.argv[1:] and sys.argv[1] == '-d':
-        debuglevel = debuglevel+1
-        del sys.argv[1]
-    host = 'localhost'
-    if sys.argv[1:]:
-        host = sys.argv[1]
-    port = 0
-    if sys.argv[2:]:
-        portstr = sys.argv[2]
-        try:
-            port = int(portstr)
-        except ValueError:
-            port = socket.getservbyname(portstr, 'tcp')
-    with Telnet() as tn:
-        tn.set_debuglevel(debuglevel)
-        tn.open(host, port, timeout=0.5)
-        tn.interact()
-
-if __name__ == '__main__':
-    test()
diff --git a/Lib/tempfile.py b/Lib/tempfile.py
index 2b4f4313247128..cbfc172a789b25 100644
--- a/Lib/tempfile.py
+++ b/Lib/tempfile.py
@@ -269,6 +269,22 @@ def _mkstemp_inner(dir, pre, suf, flags, output_type):
     raise FileExistsError(_errno.EEXIST,
                           "No usable temporary file name found")
 
+def _dont_follow_symlinks(func, path, *args):
+    # Pass follow_symlinks=False, unless not supported on this platform.
+    if func in _os.supports_follow_symlinks:
+        func(path, *args, follow_symlinks=False)
+    elif _os.name == 'nt' or not _os.path.islink(path):
+        func(path, *args)
+
+def _resetperms(path):
+    try:
+        chflags = _os.chflags
+    except AttributeError:
+        pass
+    else:
+        _dont_follow_symlinks(chflags, path, 0)
+    _dont_follow_symlinks(_os.chmod, path, 0o700)
+
 
 # User visible interfaces.
 
@@ -872,26 +888,37 @@ def __init__(self, suffix=None, prefix=None, dir=None,
             ignore_errors=self._ignore_cleanup_errors, delete=self._delete)
 
     @classmethod
-    def _rmtree(cls, name, ignore_errors=False):
+    def _rmtree(cls, name, ignore_errors=False, repeated=False):
         def onexc(func, path, exc):
             if isinstance(exc, PermissionError):
-                def resetperms(path):
-                    try:
-                        _os.chflags(path, 0)
-                    except AttributeError:
-                        pass
-                    _os.chmod(path, 0o700)
+                if repeated and path == name:
+                    if ignore_errors:
+                        return
+                    raise
 
                 try:
                     if path != name:
-                        resetperms(_os.path.dirname(path))
-                    resetperms(path)
+                        _resetperms(_os.path.dirname(path))
+                    _resetperms(path)
 
                     try:
                         _os.unlink(path)
-                    # PermissionError is raised on FreeBSD for directories
-                    except (IsADirectoryError, PermissionError):
+                    except IsADirectoryError:
                         cls._rmtree(path, ignore_errors=ignore_errors)
+                    except PermissionError:
+                        # The PermissionError handler was originally added for
+                        # FreeBSD in directories, but it seems that it is raised
+                        # on Windows too.
+                        # bpo-43153: Calling _rmtree again may
+                        # raise NotADirectoryError and mask the PermissionError.
+                        # So we must re-raise the current PermissionError if
+                        # path is not a directory.
+                        if not _os.path.isdir(path) or _os.path.isjunction(path):
+                            if ignore_errors:
+                                return
+                            raise
+                        cls._rmtree(path, ignore_errors=ignore_errors,
+                                    repeated=(path == name))
                 except FileNotFoundError:
                     pass
             elif isinstance(exc, FileNotFoundError):
diff --git a/Lib/test/.ruff.toml b/Lib/test/.ruff.toml
new file mode 100644
index 00000000000000..74ab215ee8ee28
--- /dev/null
+++ b/Lib/test/.ruff.toml
@@ -0,0 +1,24 @@
+fix = true
+select = [
+    "F811",  # Redefinition of unused variable (useful for finding test methods with the same name)
+]
+extend-exclude = [
+    # Excluded (run with the other AC files in its own separate ruff job in pre-commit)
+    "test_clinic.py",
+    # Excluded (these aren't actually executed, they're just "data files")
+    "tokenizedata/*.py",
+    # Failed to lint
+    "encoded_modules/module_iso_8859_1.py",
+    "encoded_modules/module_koi8_r.py",
+    # TODO Fix: F811 Redefinition of unused name
+    "test_buffer.py",
+    "test_dataclasses/__init__.py",
+    "test_descr.py",
+    "test_enum.py",
+    "test_functools.py",
+    "test_grammar.py",
+    "test_import/__init__.py",
+    "test_pkg.py",
+    "test_yield_from.py",
+    "time_hashlib.py",
+]
diff --git a/Lib/test/Sine-1000Hz-300ms.aif b/Lib/test/Sine-1000Hz-300ms.aif
deleted file mode 100644
index bf08f5ce859429..00000000000000
Binary files a/Lib/test/Sine-1000Hz-300ms.aif and /dev/null differ
diff --git a/Lib/test/__main__.py b/Lib/test/__main__.py
index 19a6b2b8904526..82b50ad2c6e777 100644
--- a/Lib/test/__main__.py
+++ b/Lib/test/__main__.py
@@ -1,2 +1,2 @@
-from test.libregrtest import main
-main()
+from test.libregrtest.main import main
+main(_add_python_opts=True)
diff --git a/Lib/test/_test_atexit.py b/Lib/test/_test_atexit.py
index 55d28083349175..f618c1fcbca52b 100644
--- a/Lib/test/_test_atexit.py
+++ b/Lib/test/_test_atexit.py
@@ -19,7 +19,9 @@ def assert_raises_unraisable(self, exc_type, func, *args):
             atexit.register(func, *args)
             atexit._run_exitfuncs()
 
-            self.assertEqual(cm.unraisable.object, func)
+            self.assertIsNone(cm.unraisable.object)
+            self.assertEqual(cm.unraisable.err_msg,
+                    f'Exception ignored in atexit callback {func!r}')
             self.assertEqual(cm.unraisable.exc_type, exc_type)
             self.assertEqual(type(cm.unraisable.exc_value), exc_type)
 
@@ -125,7 +127,9 @@ def func():
         try:
             with support.catch_unraisable_exception() as cm:
                 atexit._run_exitfuncs()
-                self.assertEqual(cm.unraisable.object, func)
+                self.assertIsNone(cm.unraisable.object)
+                self.assertEqual(cm.unraisable.err_msg,
+                        f'Exception ignored in atexit callback {func!r}')
                 self.assertEqual(cm.unraisable.exc_type, ZeroDivisionError)
                 self.assertEqual(type(cm.unraisable.exc_value), ZeroDivisionError)
         finally:
diff --git a/Lib/test/_test_eintr.py b/Lib/test/_test_eintr.py
index 006581f7cc6a9a..15586f15dfab30 100644
--- a/Lib/test/_test_eintr.py
+++ b/Lib/test/_test_eintr.py
@@ -25,6 +25,12 @@
 from test.support import os_helper
 from test.support import socket_helper
 
+
+# gh-109592: Tolerate a difference of 20 ms when comparing timings
+# (clock resolution)
+CLOCK_RES = 0.020
+
+
 @contextlib.contextmanager
 def kill_on_error(proc):
     """Context manager killing the subprocess if a Python exception is raised."""
@@ -75,6 +81,9 @@ def subprocess(self, *args, **kw):
         cmd_args = (sys.executable, '-c') + args
         return subprocess.Popen(cmd_args, **kw)
 
+    def check_elapsed_time(self, elapsed):
+        self.assertGreaterEqual(elapsed, self.sleep_time - CLOCK_RES)
+
 
 @unittest.skipUnless(hasattr(signal, "setitimer"), "requires setitimer()")
 class OSEINTRTest(EINTRBaseTest):
@@ -373,7 +382,7 @@ def test_sleep(self):
         time.sleep(self.sleep_time)
         self.stop_alarm()
         dt = time.monotonic() - t0
-        self.assertGreaterEqual(dt, self.sleep_time)
+        self.check_elapsed_time(dt)
 
 
 @unittest.skipUnless(hasattr(signal, "setitimer"), "requires setitimer()")
@@ -435,7 +444,7 @@ def test_select(self):
         select.select([], [], [], self.sleep_time)
         dt = time.monotonic() - t0
         self.stop_alarm()
-        self.assertGreaterEqual(dt, self.sleep_time)
+        self.check_elapsed_time(dt)
 
     @unittest.skipIf(sys.platform == "darwin",
                      "poll may fail on macOS; see issue #28087")
@@ -447,7 +456,7 @@ def test_poll(self):
         poller.poll(self.sleep_time * 1e3)
         dt = time.monotonic() - t0
         self.stop_alarm()
-        self.assertGreaterEqual(dt, self.sleep_time)
+        self.check_elapsed_time(dt)
 
     @unittest.skipUnless(hasattr(select, 'epoll'), 'need select.epoll')
     def test_epoll(self):
@@ -458,7 +467,7 @@ def test_epoll(self):
         poller.poll(self.sleep_time)
         dt = time.monotonic() - t0
         self.stop_alarm()
-        self.assertGreaterEqual(dt, self.sleep_time)
+        self.check_elapsed_time(dt)
 
     @unittest.skipUnless(hasattr(select, 'kqueue'), 'need select.kqueue')
     def test_kqueue(self):
@@ -469,7 +478,7 @@ def test_kqueue(self):
         kqueue.control(None, 1, self.sleep_time)
         dt = time.monotonic() - t0
         self.stop_alarm()
-        self.assertGreaterEqual(dt, self.sleep_time)
+        self.check_elapsed_time(dt)
 
     @unittest.skipUnless(hasattr(select, 'devpoll'), 'need select.devpoll')
     def test_devpoll(self):
@@ -480,7 +489,7 @@ def test_devpoll(self):
         poller.poll(self.sleep_time * 1e3)
         dt = time.monotonic() - t0
         self.stop_alarm()
-        self.assertGreaterEqual(dt, self.sleep_time)
+        self.check_elapsed_time(dt)
 
 
 class FNTLEINTRTest(EINTRBaseTest):
@@ -512,8 +521,8 @@ def _lock(self, lock_func, lock_name):
                 # potential context switch delay
                 lock_func(f, fcntl.LOCK_EX)
                 dt = time.monotonic() - start_time
-                self.assertGreaterEqual(dt, self.sleep_time)
                 self.stop_alarm()
+                self.check_elapsed_time(dt)
             proc.wait()
 
     # Issue 35633: See https://bugs.python.org/issue35633#msg333662
diff --git a/Lib/test/_test_embed_set_config.py b/Lib/test/_test_embed_set_config.py
index 0c016b5d75d734..a2ddd133cf47c8 100644
--- a/Lib/test/_test_embed_set_config.py
+++ b/Lib/test/_test_embed_set_config.py
@@ -9,9 +9,9 @@
 import os
 import sys
 import unittest
+from test.support import MS_WINDOWS
 
 
-MS_WINDOWS = (os.name == 'nt')
 MAX_HASH_SEED = 4294967295
 
 class SetConfigTests(unittest.TestCase):
diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index 9a2db24b4bd597..a94eb6c0ae4b8e 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -13,6 +13,7 @@
 import os
 import gc
 import errno
+import functools
 import signal
 import array
 import socket
@@ -31,6 +32,7 @@
 from test.support import hashlib_helper
 from test.support import import_helper
 from test.support import os_helper
+from test.support import script_helper
 from test.support import socket_helper
 from test.support import threading_helper
 from test.support import warnings_helper
@@ -48,6 +50,7 @@
 import multiprocessing.managers
 import multiprocessing.pool
 import multiprocessing.queues
+from multiprocessing.connection import wait
 
 from multiprocessing import util
 
@@ -75,10 +78,15 @@
     msvcrt = None
 
 
-if support.check_sanitizer(address=True):
-    # bpo-45200: Skip multiprocessing tests if Python is built with ASAN to
+if support.HAVE_ASAN_FORK_BUG:
+    # gh-89363: Skip multiprocessing tests if Python is built with ASAN to
     # work around a libasan race condition: dead lock in pthread_create().
-    raise unittest.SkipTest("libasan has a pthread_create() dead lock")
+    raise unittest.SkipTest("libasan has a pthread_create() dead lock related to thread+fork")
+
+
+# gh-110666: Tolerate a difference of 100 ms when comparing timings
+# (clock resolution)
+CLOCK_RES = 0.100
 
 
 def latin(s):
@@ -131,8 +139,6 @@ def _resource_unlink(name, rtype):
 
 WIN32 = (sys.platform == "win32")
 
-from multiprocessing.connection import wait
-
 def wait_for_handle(handle, timeout):
     if timeout is not None and timeout < 0.0:
         timeout = None
@@ -172,6 +178,59 @@ def check_enough_semaphores():
                             "to run the test (required: %d)." % nsems_min)
 
 
+def only_run_in_spawn_testsuite(reason):
+    """Returns a decorator: raises SkipTest when SM != spawn at test time.
+
+    This can be useful to save overall Python test suite execution time.
+    "spawn" is the universal mode available on all platforms so this limits the
+    decorated test to only execute within test_multiprocessing_spawn.
+
+    This would not be necessary if we refactored our test suite to split things
+    into other test files when they are not start method specific to be rerun
+    under all start methods.
+    """
+
+    def decorator(test_item):
+
+        @functools.wraps(test_item)
+        def spawn_check_wrapper(*args, **kwargs):
+            if (start_method := multiprocessing.get_start_method()) != "spawn":
+                raise unittest.SkipTest(f"{start_method=}, not 'spawn'; {reason}")
+            return test_item(*args, **kwargs)
+
+        return spawn_check_wrapper
+
+    return decorator
+
+
+class TestInternalDecorators(unittest.TestCase):
+    """Logic within a test suite that could errantly skip tests? Test it!"""
+
+    @unittest.skipIf(sys.platform == "win32", "test requires that fork exists.")
+    def test_only_run_in_spawn_testsuite(self):
+        if multiprocessing.get_start_method() != "spawn":
+            raise unittest.SkipTest("only run in test_multiprocessing_spawn.")
+
+        try:
+            @only_run_in_spawn_testsuite("testing this decorator")
+            def return_four_if_spawn():
+                return 4
+        except Exception as err:
+            self.fail(f"expected decorated `def` not to raise; caught {err}")
+
+        orig_start_method = multiprocessing.get_start_method(allow_none=True)
+        try:
+            multiprocessing.set_start_method("spawn", force=True)
+            self.assertEqual(return_four_if_spawn(), 4)
+            multiprocessing.set_start_method("fork", force=True)
+            with self.assertRaises(unittest.SkipTest) as ctx:
+                return_four_if_spawn()
+            self.assertIn("testing this decorator", str(ctx.exception))
+            self.assertIn("start_method=", str(ctx.exception))
+        finally:
+            multiprocessing.set_start_method(orig_start_method, force=True)
+
+
 #
 # Creates a wrapper for a function which records the time it takes to finish
 #
@@ -275,6 +334,7 @@ def test_set_executable(self):
             p.join()
             self.assertEqual(p.exitcode, 0)
 
+    @support.requires_resource('cpu')
     def test_args_argument(self):
         # bpo-45735: Using list or tuple as *args* in constructor could
         # achieve the same effect.
@@ -502,13 +562,14 @@ def handler(*args):
 
     def test_terminate(self):
         exitcode = self._kill_process(multiprocessing.Process.terminate)
-        if os.name != 'nt':
-            self.assertEqual(exitcode, -signal.SIGTERM)
+        self.assertEqual(exitcode, -signal.SIGTERM)
 
     def test_kill(self):
         exitcode = self._kill_process(multiprocessing.Process.kill)
         if os.name != 'nt':
             self.assertEqual(exitcode, -signal.SIGKILL)
+        else:
+            self.assertEqual(exitcode, -signal.SIGTERM)
 
     def test_cpu_count(self):
         try:
@@ -620,6 +681,7 @@ def test_close(self):
 
         close_queue(q)
 
+    @support.requires_resource('walltime')
     def test_many_processes(self):
         if self.TYPE == 'threads':
             self.skipTest('test not appropriate for {}'.format(self.TYPE))
@@ -1594,12 +1656,11 @@ def test_waitfor(self):
     def _test_waitfor_timeout_f(cls, cond, state, success, sem):
         sem.release()
         with cond:
-            expected = 0.1
+            expected = 0.100
             dt = time.monotonic()
             result = cond.wait_for(lambda : state.value==4, timeout=expected)
             dt = time.monotonic() - dt
-            # borrow logic in assertTimeout() from test/lock_tests.py
-            if not result and expected * 0.6 < dt < expected * 10.0:
+            if not result and (expected - CLOCK_RES) <= dt:
                 success.value = True
 
     @unittest.skipUnless(HAS_SHAREDCTYPES, 'needs sharedctypes')
@@ -1618,7 +1679,7 @@ def test_waitfor_timeout(self):
 
         # Only increment 3 times, so state == 4 is never reached.
         for i in range(3):
-            time.sleep(0.01)
+            time.sleep(0.010)
             with cond:
                 state.value += 1
                 cond.notify()
@@ -2377,8 +2438,11 @@ def test_namespace(self):
 #
 #
 
-def sqr(x, wait=0.0):
-    time.sleep(wait)
+def sqr(x, wait=0.0, event=None):
+    if event is None:
+        time.sleep(wait)
+    else:
+        event.wait(wait)
     return x*x
 
 def mul(x, y):
@@ -2517,10 +2581,18 @@ def test_async(self):
         self.assertTimingAlmostEqual(get.elapsed, TIMEOUT1)
 
     def test_async_timeout(self):
-        res = self.pool.apply_async(sqr, (6, TIMEOUT2 + 1.0))
-        get = TimingWrapper(res.get)
-        self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2)
-        self.assertTimingAlmostEqual(get.elapsed, TIMEOUT2)
+        p = self.Pool(3)
+        try:
+            event = threading.Event() if self.TYPE == 'threads' else None
+            res = p.apply_async(sqr, (6, TIMEOUT2 + support.SHORT_TIMEOUT, event))
+            get = TimingWrapper(res.get)
+            self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2)
+            self.assertTimingAlmostEqual(get.elapsed, TIMEOUT2)
+        finally:
+            if event is not None:
+                event.set()
+            p.terminate()
+            p.join()
 
     def test_imap(self):
         it = self.pool.imap(sqr, list(range(10)))
@@ -2621,14 +2693,15 @@ def test_make_pool(self):
                 p.join()
 
     def test_terminate(self):
-        result = self.pool.map_async(
-            time.sleep, [0.1 for i in range(10000)], chunksize=1
-            )
-        self.pool.terminate()
-        join = TimingWrapper(self.pool.join)
-        join()
-        # Sanity check the pool didn't wait for all tasks to finish
-        self.assertLess(join.elapsed, 2.0)
+        if self.TYPE == 'threads':
+            self.skipTest("Threads cannot be terminated")
+
+        # Simulate slow tasks which take "forever" to complete
+        p = self.Pool(3)
+        args = [support.LONG_TIMEOUT for i in range(10_000)]
+        result = p.map_async(time.sleep, args, chunksize=1)
+        p.terminate()
+        p.join()
 
     def test_empty_iterable(self):
         # See Issue 12157
@@ -3042,7 +3115,7 @@ def test_remote(self):
         del queue
 
 
-@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
 class _TestManagerRestart(BaseTestCase):
 
     @classmethod
@@ -3095,6 +3168,44 @@ def test_rapid_restart(self):
             if hasattr(manager, "shutdown"):
                 self.addCleanup(manager.shutdown)
 
+
+class FakeConnection:
+    def send(self, payload):
+        pass
+
+    def recv(self):
+        return '#ERROR', pyqueue.Empty()
+
+class TestManagerExceptions(unittest.TestCase):
+    # Issue 106558: Manager exceptions avoids creating cyclic references.
+    def setUp(self):
+        self.mgr = multiprocessing.Manager()
+
+    def tearDown(self):
+        self.mgr.shutdown()
+        self.mgr.join()
+
+    def test_queue_get(self):
+        queue = self.mgr.Queue()
+        if gc.isenabled():
+            gc.disable()
+            self.addCleanup(gc.enable)
+        try:
+            queue.get_nowait()
+        except pyqueue.Empty as e:
+            wr = weakref.ref(e)
+        self.assertEqual(wr(), None)
+
+    def test_dispatch(self):
+        if gc.isenabled():
+            gc.disable()
+            self.addCleanup(gc.enable)
+        try:
+            multiprocessing.managers.dispatch(FakeConnection(), None, None)
+        except pyqueue.Empty as e:
+            wr = weakref.ref(e)
+        self.assertEqual(wr(), None)
+
 #
 #
 #
@@ -3531,7 +3642,7 @@ def test_dont_merge(self):
 #
 
 @unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction")
-@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
 class _TestPicklingConnections(BaseTestCase):
 
     ALLOWED_TYPES = ('processes',)
@@ -3834,7 +3945,7 @@ def test_copy(self):
 
 
 @unittest.skipUnless(HAS_SHMEM, "requires multiprocessing.shared_memory")
-@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
 class _TestSharedMemory(BaseTestCase):
 
     ALLOWED_TYPES = ('processes',)
@@ -4344,6 +4455,59 @@ def test_shared_memory_cleaned_after_process_termination(self):
                     "resource_tracker: There appear to be 1 leaked "
                     "shared_memory objects to clean up at shutdown", err)
 
+    @unittest.skipIf(os.name != "posix", "resource_tracker is posix only")
+    def test_shared_memory_untracking(self):
+        # gh-82300: When a separate Python process accesses shared memory
+        # with track=False, it must not cause the memory to be deleted
+        # when terminating.
+        cmd = '''if 1:
+            import sys
+            from multiprocessing.shared_memory import SharedMemory
+            mem = SharedMemory(create=False, name=sys.argv[1], track=False)
+            mem.close()
+        '''
+        mem = shared_memory.SharedMemory(create=True, size=10)
+        # The resource tracker shares pipes with the subprocess, and so
+        # err existing means that the tracker process has terminated now.
+        try:
+            rc, out, err = script_helper.assert_python_ok("-c", cmd, mem.name)
+            self.assertNotIn(b"resource_tracker", err)
+            self.assertEqual(rc, 0)
+            mem2 = shared_memory.SharedMemory(create=False, name=mem.name)
+            mem2.close()
+        finally:
+            try:
+                mem.unlink()
+            except OSError:
+                pass
+            mem.close()
+
+    @unittest.skipIf(os.name != "posix", "resource_tracker is posix only")
+    def test_shared_memory_tracking(self):
+        # gh-82300: When a separate Python process accesses shared memory
+        # with track=True, it must cause the memory to be deleted when
+        # terminating.
+        cmd = '''if 1:
+            import sys
+            from multiprocessing.shared_memory import SharedMemory
+            mem = SharedMemory(create=False, name=sys.argv[1], track=True)
+            mem.close()
+        '''
+        mem = shared_memory.SharedMemory(create=True, size=10)
+        try:
+            rc, out, err = script_helper.assert_python_ok("-c", cmd, mem.name)
+            self.assertEqual(rc, 0)
+            self.assertIn(
+                b"resource_tracker: There appear to be 1 leaked "
+                b"shared_memory objects to clean up at shutdown", err)
+        finally:
+            try:
+                mem.unlink()
+            except OSError:
+                pass
+            resource_tracker.unregister(mem._name, "shared_memory")
+            mem.close()
+
 #
 # Test to verify that `Finalize` works.
 #
@@ -4412,6 +4576,7 @@ def test_finalize(self):
         result = [obj for obj in iter(conn.recv, 'STOP')]
         self.assertEqual(result, ['a', 'b', 'd10', 'd03', 'd02', 'd01', 'e'])
 
+    @support.requires_resource('cpu')
     def test_thread_safety(self):
         # bpo-24484: _run_finalizers() should be thread-safe
         def cb():
@@ -4636,7 +4801,7 @@ def test_invalid_handles(self):
 
 
 
-@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
 class OtherTest(unittest.TestCase):
     # TODO: add more tests for deliver/answer challenge.
     def test_deliver_challenge_auth_failure(self):
@@ -4656,7 +4821,7 @@ def __init__(self):
             def recv_bytes(self, size):
                 self.count += 1
                 if self.count == 1:
-                    return multiprocessing.connection.CHALLENGE
+                    return multiprocessing.connection._CHALLENGE
                 elif self.count == 2:
                     return b'something bogus'
                 return b''
@@ -4666,6 +4831,44 @@ def send_bytes(self, data):
                           multiprocessing.connection.answer_challenge,
                           _FakeConnection(), b'abc')
 
+
+@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
+class ChallengeResponseTest(unittest.TestCase):
+    authkey = b'supadupasecretkey'
+
+    def create_response(self, message):
+        return multiprocessing.connection._create_response(
+            self.authkey, message
+        )
+
+    def verify_challenge(self, message, response):
+        return multiprocessing.connection._verify_challenge(
+            self.authkey, message, response
+        )
+
+    def test_challengeresponse(self):
+        for algo in [None, "md5", "sha256"]:
+            with self.subTest(f"{algo=}"):
+                msg = b'is-twenty-bytes-long'  # The length of a legacy message.
+                if algo:
+                    prefix = b'{%s}' % algo.encode("ascii")
+                else:
+                    prefix = b''
+                msg = prefix + msg
+                response = self.create_response(msg)
+                if not response.startswith(prefix):
+                    self.fail(response)
+                self.verify_challenge(msg, response)
+
+    # TODO(gpshead): We need integration tests for handshakes between modern
+    # deliver_challenge() and verify_response() code and connections running a
+    # test-local copy of the legacy Python <=3.11 implementations.
+
+    # TODO(gpshead): properly annotate tests for requires_hashdigest rather than
+    # only running these on a platform supporting everything.  otherwise logic
+    # issues preventing it from working on FIPS mode setups will be hidden.
+
 #
 # Test Manager.start()/Pool.__init__() initializer feature - see issue 5585
 #
@@ -4673,7 +4876,7 @@ def send_bytes(self, data):
 def initializer(ns):
     ns.test += 1
 
-@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
 class TestInitializers(unittest.TestCase):
     def setUp(self):
         self.mgr = multiprocessing.Manager()
@@ -4774,7 +4977,7 @@ class TestWait(unittest.TestCase):
     def _child_test_wait(cls, w, slow):
         for i in range(10):
             if slow:
-                time.sleep(random.random()*0.1)
+                time.sleep(random.random() * 0.100)
             w.send((i, os.getpid()))
         w.close()
 
@@ -4814,7 +5017,7 @@ def _child_test_wait_socket(cls, address, slow):
         s.connect(address)
         for i in range(10):
             if slow:
-                time.sleep(random.random()*0.1)
+                time.sleep(random.random() * 0.100)
             s.sendall(('%s\n' % i).encode('ascii'))
         s.close()
 
@@ -4859,34 +5062,30 @@ def test_wait_slow(self):
     def test_wait_socket_slow(self):
         self.test_wait_socket(True)
 
+    @support.requires_resource('walltime')
     def test_wait_timeout(self):
         from multiprocessing.connection import wait
 
-        expected = 5
+        timeout = 5.0  # seconds
         a, b = multiprocessing.Pipe()
 
         start = time.monotonic()
-        res = wait([a, b], expected)
+        res = wait([a, b], timeout)
         delta = time.monotonic() - start
 
         self.assertEqual(res, [])
-        self.assertLess(delta, expected * 2)
-        self.assertGreater(delta, expected * 0.5)
+        self.assertGreater(delta, timeout - CLOCK_RES)
 
         b.send(None)
-
-        start = time.monotonic()
         res = wait([a, b], 20)
-        delta = time.monotonic() - start
-
         self.assertEqual(res, [a])
-        self.assertLess(delta, 0.4)
 
     @classmethod
     def signal_and_sleep(cls, sem, period):
         sem.release()
         time.sleep(period)
 
+    @support.requires_resource('walltime')
     def test_wait_integer(self):
         from multiprocessing.connection import wait
 
@@ -5239,6 +5438,14 @@ def test_context(self):
             self.assertRaises(ValueError, ctx.set_start_method, None)
             self.check_context(ctx)
 
+    def test_context_check_module_types(self):
+        try:
+            ctx = multiprocessing.get_context('forkserver')
+        except ValueError:
+            raise unittest.SkipTest('forkserver should be available')
+        with self.assertRaisesRegex(TypeError, 'module_names must be a list of strings'):
+            ctx.set_forkserver_preload([1, 2, 3])
+
     def test_set_get(self):
         multiprocessing.set_forkserver_preload(PRELOAD)
         count = 0
@@ -5283,6 +5490,56 @@ def test_preload_resources(self):
             print(err)
             self.fail("failed spawning forkserver or grandchild")
 
+    @unittest.skipIf(sys.platform == "win32",
+                     "Only Spawn on windows so no risk of mixing")
+    @only_run_in_spawn_testsuite("avoids redundant testing.")
+    def test_mixed_startmethod(self):
+        # Fork-based locks cannot be used with spawned process
+        for process_method in ["spawn", "forkserver"]:
+            queue = multiprocessing.get_context("fork").Queue()
+            process_ctx = multiprocessing.get_context(process_method)
+            p = process_ctx.Process(target=close_queue, args=(queue,))
+            err_msg = "A SemLock created in a fork"
+            with self.assertRaisesRegex(RuntimeError, err_msg):
+                p.start()
+
+        # non-fork-based locks can be used with all other start methods
+        for queue_method in ["spawn", "forkserver"]:
+            for process_method in multiprocessing.get_all_start_methods():
+                queue = multiprocessing.get_context(queue_method).Queue()
+                process_ctx = multiprocessing.get_context(process_method)
+                p = process_ctx.Process(target=close_queue, args=(queue,))
+                p.start()
+                p.join()
+
+    @classmethod
+    def _put_one_in_queue(cls, queue):
+        queue.put(1)
+
+    @classmethod
+    def _put_two_and_nest_once(cls, queue):
+        queue.put(2)
+        process = multiprocessing.Process(target=cls._put_one_in_queue, args=(queue,))
+        process.start()
+        process.join()
+
+    def test_nested_startmethod(self):
+        # gh-108520: Regression test to ensure that child process can send its
+        # arguments to another process
+        queue = multiprocessing.Queue()
+
+        process = multiprocessing.Process(target=self._put_two_and_nest_once, args=(queue,))
+        process.start()
+        process.join()
+
+        results = []
+        while not queue.empty():
+            results.append(queue.get())
+
+        # gh-109706: queue.put(1) can write into the queue before queue.put(2),
+        # there is no synchronization in the test.
+        self.assertSetEqual(set(results), set([2, 1]))
+
 
 @unittest.skipIf(sys.platform == "win32",
                  "test semantics don't make sense on Windows")
@@ -5537,7 +5794,7 @@ def is_alive(self):
             any(process.is_alive() for process in forked_processes))
 
 
-@hashlib_helper.requires_hashdigest('md5')
+@hashlib_helper.requires_hashdigest('sha256')
 class TestSyncManagerTypes(unittest.TestCase):
     """Test all the types which can be shared between a parent and a
     child process by using a manager which acts as an intermediary
@@ -5778,6 +6035,7 @@ def test_namespace(self):
 
 
 class TestNamedResource(unittest.TestCase):
+    @only_run_in_spawn_testsuite("spawn specific test.")
     def test_global_named_resource_spawn(self):
         #
         # gh-90549: Check that global named resources in main module
@@ -5788,22 +6046,18 @@ def test_global_named_resource_spawn(self):
         with open(testfn, 'w', encoding='utf-8') as f:
             f.write(textwrap.dedent('''\
                 import multiprocessing as mp
-
                 ctx = mp.get_context('spawn')
-
                 global_resource = ctx.Semaphore()
-
                 def submain(): pass
-
                 if __name__ == '__main__':
                     p = ctx.Process(target=submain)
                     p.start()
                     p.join()
             '''))
-        rc, out, err = test.support.script_helper.assert_python_ok(testfn)
+        rc, out, err = script_helper.assert_python_ok(testfn)
         # on error, err = 'UserWarning: resource_tracker: There appear to
         # be 1 leaked semaphore objects to clean up at shutdown'
-        self.assertEqual(err, b'')
+        self.assertFalse(err, msg=err.decode('utf-8'))
 
 
 class MiscTestCase(unittest.TestCase):
@@ -5812,6 +6066,24 @@ def test__all__(self):
         support.check__all__(self, multiprocessing, extra=multiprocessing.__all__,
                              not_exported=['SUBDEBUG', 'SUBWARNING'])
 
+    @only_run_in_spawn_testsuite("avoids redundant testing.")
+    def test_spawn_sys_executable_none_allows_import(self):
+        # Regression test for a bug introduced in
+        # https://github.com/python/cpython/issues/90876 that caused an
+        # ImportError in multiprocessing when sys.executable was None.
+        # This can be true in embedded environments.
+        rc, out, err = script_helper.assert_python_ok(
+            "-c",
+            """if 1:
+            import sys
+            sys.executable = None
+            assert "multiprocessing" not in sys.modules, "already imported!"
+            import multiprocessing
+            import multiprocessing.spawn  # This should not fail\n""",
+        )
+        self.assertEqual(rc, 0)
+        self.assertFalse(err, msg=err.decode('utf-8'))
+
 
 #
 # Mixins
@@ -5951,7 +6223,8 @@ class ThreadsMixin(BaseMixin):
 # Functions used to create test cases from the base ones in this module
 #
 
-def install_tests_in_module_dict(remote_globs, start_method):
+def install_tests_in_module_dict(remote_globs, start_method,
+                                 only_type=None, exclude_types=False):
     __module__ = remote_globs['__name__']
     local_globs = globals()
     ALL_TYPES = {'processes', 'threads', 'manager'}
@@ -5964,16 +6237,23 @@ def install_tests_in_module_dict(remote_globs, start_method):
                 continue
             assert set(base.ALLOWED_TYPES) <= ALL_TYPES, base.ALLOWED_TYPES
             for type_ in base.ALLOWED_TYPES:
+                if only_type and type_ != only_type:
+                    continue
+                if exclude_types:
+                    continue
                 newname = 'With' + type_.capitalize() + name[1:]
                 Mixin = local_globs[type_.capitalize() + 'Mixin']
                 class Temp(base, Mixin, unittest.TestCase):
                     pass
                 if type_ == 'manager':
-                    Temp = hashlib_helper.requires_hashdigest('md5')(Temp)
+                    Temp = hashlib_helper.requires_hashdigest('sha256')(Temp)
                 Temp.__name__ = Temp.__qualname__ = newname
                 Temp.__module__ = __module__
                 remote_globs[newname] = Temp
         elif issubclass(base, unittest.TestCase):
+            if only_type:
+                continue
+
             class Temp(base, object):
                 pass
             Temp.__name__ = Temp.__qualname__ = name
diff --git a/Lib/test/_testcppext.cpp b/Lib/test/_testcppext.cpp
deleted file mode 100644
index 0e381a78c5ceed..00000000000000
--- a/Lib/test/_testcppext.cpp
+++ /dev/null
@@ -1,258 +0,0 @@
-// gh-91321: Very basic C++ test extension to check that the Python C API is
-// compatible with C++ and does not emit C++ compiler warnings.
-
-// Always enable assertions
-#undef NDEBUG
-
-#include "Python.h"
-
-#if __cplusplus >= 201103
-#  define NAME _testcpp11ext
-#else
-#  define NAME _testcpp03ext
-#endif
-
-#define _STR(NAME) #NAME
-#define STR(NAME) _STR(NAME)
-
-PyDoc_STRVAR(_testcppext_add_doc,
-"add(x, y)\n"
-"\n"
-"Return the sum of two integers: x + y.");
-
-static PyObject *
-_testcppext_add(PyObject *Py_UNUSED(module), PyObject *args)
-{
-    long i, j;
-    if (!PyArg_ParseTuple(args, "ll:foo", &i, &j)) {
-        return _Py_NULL;
-    }
-    long res = i + j;
-    return PyLong_FromLong(res);
-}
-
-
-// Class to test operator casting an object to PyObject*
-class StrongRef
-{
-public:
-    StrongRef(PyObject *obj) : m_obj(obj) {
-        Py_INCREF(this->m_obj);
-    }
-
-    ~StrongRef() {
-        Py_DECREF(this->m_obj);
-    }
-
-    // Cast to PyObject*: get a borrowed reference
-    inline operator PyObject*() const { return this->m_obj; }
-
-private:
-    PyObject *m_obj;  // Strong reference
-};
-
-
-static PyObject *
-test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
-{
-    PyObject *obj = Py_BuildValue("(ii)", 1, 2);
-    if (obj == _Py_NULL) {
-        return _Py_NULL;
-    }
-    Py_ssize_t refcnt = Py_REFCNT(obj);
-    assert(refcnt >= 1);
-
-    // gh-92138: For backward compatibility, functions of Python C API accepts
-    // "const PyObject*". Check that using it does not emit C++ compiler
-    // warnings.
-    const PyObject *const_obj = obj;
-    Py_INCREF(const_obj);
-    Py_DECREF(const_obj);
-    PyTypeObject *type = Py_TYPE(const_obj);
-    assert(Py_REFCNT(const_obj) == refcnt);
-    assert(type == &PyTuple_Type);
-    assert(PyTuple_GET_SIZE(const_obj) == 2);
-    PyObject *one = PyTuple_GET_ITEM(const_obj, 0);
-    assert(PyLong_AsLong(one) == 1);
-
-    // gh-92898: StrongRef doesn't inherit from PyObject but has an operator to
-    // cast to PyObject*.
-    StrongRef strong_ref(obj);
-    assert(Py_TYPE(strong_ref) == &PyTuple_Type);
-    assert(Py_REFCNT(strong_ref) == (refcnt + 1));
-    Py_INCREF(strong_ref);
-    Py_DECREF(strong_ref);
-
-    // gh-93442: Pass 0 as NULL for PyObject*
-    Py_XINCREF(0);
-    Py_XDECREF(0);
-#if _cplusplus >= 201103
-    // Test nullptr passed as PyObject*
-    Py_XINCREF(nullptr);
-    Py_XDECREF(nullptr);
-#endif
-
-    Py_DECREF(obj);
-    Py_RETURN_NONE;
-}
-
-
-static PyObject *
-test_unicode(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
-{
-    PyObject *str = PyUnicode_FromString("abc");
-    if (str == _Py_NULL) {
-        return _Py_NULL;
-    }
-
-    assert(PyUnicode_Check(str));
-    assert(PyUnicode_GET_LENGTH(str) == 3);
-
-    // gh-92800: test PyUnicode_READ()
-    const void* data = PyUnicode_DATA(str);
-    assert(data != _Py_NULL);
-    int kind = PyUnicode_KIND(str);
-    assert(kind == PyUnicode_1BYTE_KIND);
-    assert(PyUnicode_READ(kind, data, 0) == 'a');
-
-    // gh-92800: test PyUnicode_READ() casts
-    const void* const_data = PyUnicode_DATA(str);
-    unsigned int ukind = static_cast<unsigned int>(kind);
-    assert(PyUnicode_READ(ukind, const_data, 2) == 'c');
-
-    assert(PyUnicode_READ_CHAR(str, 1) == 'b');
-
-    Py_DECREF(str);
-    Py_RETURN_NONE;
-}
-
-/* Test a `new`-allocated object with a virtual method.
- * (https://github.com/python/cpython/issues/94731) */
-
-class VirtualPyObject : public PyObject {
-public:
-    VirtualPyObject();
-    virtual ~VirtualPyObject() {
-        delete [] internal_data;
-        --instance_count;
-    }
-    virtual void set_internal_data() {
-        internal_data[0] = 1;
-    }
-    static void dealloc(PyObject* o) {
-        delete static_cast<VirtualPyObject*>(o);
-    }
-
-    // Number of "living" instances
-    static int instance_count;
-private:
-    // buffer that can get corrupted
-    int* internal_data;
-};
-
-int VirtualPyObject::instance_count = 0;
-
-PyType_Slot VirtualPyObject_Slots[] = {
-    {Py_tp_free, (void*)VirtualPyObject::dealloc},
-    {0, _Py_NULL},
-};
-
-PyType_Spec VirtualPyObject_Spec = {
-    /* .name */ STR(NAME) ".VirtualPyObject",
-    /* .basicsize */ sizeof(VirtualPyObject),
-    /* .itemsize */ 0,
-    /* .flags */ Py_TPFLAGS_DEFAULT,
-    /* .slots */ VirtualPyObject_Slots,
-};
-
-VirtualPyObject::VirtualPyObject() {
-    // Create a temporary type (just so we don't need to store it)
-    PyObject *type = PyType_FromSpec(&VirtualPyObject_Spec);
-    // no good way to signal failure from a C++ constructor, so use assert
-    // for error handling
-    assert(type);
-    assert(PyObject_Init(this, (PyTypeObject *)type));
-    Py_DECREF(type);
-    internal_data = new int[50];
-    ++instance_count;
-}
-
-static PyObject *
-test_virtual_object(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
-{
-    VirtualPyObject* obj = new VirtualPyObject();
-    obj->set_internal_data();
-    Py_DECREF(obj);
-    if (VirtualPyObject::instance_count != 0) {
-        return PyErr_Format(
-            PyExc_AssertionError,
-            "instance_count should be 0, got %d",
-            VirtualPyObject::instance_count);
-    }
-    Py_RETURN_NONE;
-}
-
-static PyMethodDef _testcppext_methods[] = {
-    {"add", _testcppext_add, METH_VARARGS, _testcppext_add_doc},
-    {"test_api_casts", test_api_casts, METH_NOARGS, _Py_NULL},
-    {"test_unicode", test_unicode, METH_NOARGS, _Py_NULL},
-    {"test_virtual_object", test_virtual_object, METH_NOARGS, _Py_NULL},
-    // Note: _testcppext_exec currently runs all test functions directly.
-    // When adding a new one, add a call there.
-
-    {_Py_NULL, _Py_NULL, 0, _Py_NULL}  /* sentinel */
-};
-
-
-static int
-_testcppext_exec(PyObject *module)
-{
-    if (PyModule_AddIntMacro(module, __cplusplus) < 0) {
-        return -1;
-    }
-
-    PyObject *result;
-
-    result = PyObject_CallMethod(module, "test_api_casts", "");
-    if (!result) return -1;
-    Py_DECREF(result);
-
-    result = PyObject_CallMethod(module, "test_unicode", "");
-    if (!result) return -1;
-    Py_DECREF(result);
-
-    result = PyObject_CallMethod(module, "test_virtual_object", "");
-    if (!result) return -1;
-    Py_DECREF(result);
-
-    return 0;
-}
-
-static PyModuleDef_Slot _testcppext_slots[] = {
-    {Py_mod_exec, reinterpret_cast<void*>(_testcppext_exec)},
-    {0, _Py_NULL}
-};
-
-
-PyDoc_STRVAR(_testcppext_doc, "C++ test extension.");
-
-static struct PyModuleDef _testcppext_module = {
-    PyModuleDef_HEAD_INIT,  // m_base
-    STR(NAME),  // m_name
-    _testcppext_doc,  // m_doc
-    0,  // m_size
-    _testcppext_methods,  // m_methods
-    _testcppext_slots,  // m_slots
-    _Py_NULL,  // m_traverse
-    _Py_NULL,  // m_clear
-    _Py_NULL,  // m_free
-};
-
-#define _FUNC_NAME(NAME) PyInit_ ## NAME
-#define FUNC_NAME(NAME) _FUNC_NAME(NAME)
-
-PyMODINIT_FUNC
-FUNC_NAME(NAME)(void)
-{
-    return PyModuleDef_Init(&_testcppext_module);
-}
diff --git a/Lib/test/archivetestdata/README.md b/Lib/test/archivetestdata/README.md
new file mode 100644
index 00000000000000..7b555fa32765bf
--- /dev/null
+++ b/Lib/test/archivetestdata/README.md
@@ -0,0 +1,36 @@
+# Test data for `test_zipfile`, `test_tarfile` (and even some others)
+
+## `test_zipfile`
+
+The test executables in this directory are created manually from `header.sh` and
+the `testdata_module_inside_zip.py` file.  You must have Info-ZIP's zip utility
+installed (`apt install zip` on Debian).
+
+### Purpose of `exe_with_zip` and `exe_with_z64`
+
+These are used to test executable files with an appended zipfile, in a scenario
+where the executable is _not_ a Python interpreter itself so our automatic
+zipimport machinery (that'd look for `__main__.py`) is not being used.
+
+### Updating the test executables
+
+If you update header.sh or the testdata_module_inside_zip.py file, rerun the
+commands below.  These are expected to be rarely changed, if ever.
+
+#### Standard old format (2.0) zip file
+
+```
+zip -0 zip2.zip testdata_module_inside_zip.py
+cat header.sh zip2.zip >exe_with_zip
+rm zip2.zip
+```
+
+#### Modern format (4.5) zip64 file
+
+Redirecting from stdin forces Info-ZIP's zip tool to create a zip64.
+
+```
+zip -0 <testdata_module_inside_zip.py >zip64.zip
+cat header.sh zip64.zip >exe_with_z64
+rm zip64.zip
+```
diff --git a/Lib/test/ziptestdata/exe_with_z64 b/Lib/test/archivetestdata/exe_with_z64
similarity index 100%
rename from Lib/test/ziptestdata/exe_with_z64
rename to Lib/test/archivetestdata/exe_with_z64
diff --git a/Lib/test/ziptestdata/exe_with_zip b/Lib/test/archivetestdata/exe_with_zip
similarity index 100%
rename from Lib/test/ziptestdata/exe_with_zip
rename to Lib/test/archivetestdata/exe_with_zip
diff --git a/Lib/test/ziptestdata/header.sh b/Lib/test/archivetestdata/header.sh
similarity index 100%
rename from Lib/test/ziptestdata/header.sh
rename to Lib/test/archivetestdata/header.sh
diff --git a/Lib/test/recursion.tar b/Lib/test/archivetestdata/recursion.tar
similarity index 100%
rename from Lib/test/recursion.tar
rename to Lib/test/archivetestdata/recursion.tar
diff --git a/Lib/test/ziptestdata/testdata_module_inside_zip.py b/Lib/test/archivetestdata/testdata_module_inside_zip.py
similarity index 100%
rename from Lib/test/ziptestdata/testdata_module_inside_zip.py
rename to Lib/test/archivetestdata/testdata_module_inside_zip.py
diff --git a/Lib/test/testtar.tar b/Lib/test/archivetestdata/testtar.tar
similarity index 100%
rename from Lib/test/testtar.tar
rename to Lib/test/archivetestdata/testtar.tar
diff --git a/Lib/test/testtar.tar.xz b/Lib/test/archivetestdata/testtar.tar.xz
similarity index 100%
rename from Lib/test/testtar.tar.xz
rename to Lib/test/archivetestdata/testtar.tar.xz
diff --git a/Lib/test/zip_cp437_header.zip b/Lib/test/archivetestdata/zip_cp437_header.zip
similarity index 100%
rename from Lib/test/zip_cp437_header.zip
rename to Lib/test/archivetestdata/zip_cp437_header.zip
diff --git a/Lib/test/zipdir.zip b/Lib/test/archivetestdata/zipdir.zip
similarity index 100%
rename from Lib/test/zipdir.zip
rename to Lib/test/archivetestdata/zipdir.zip
diff --git a/Lib/test/audiodata/pluck-alaw.aifc b/Lib/test/audiodata/pluck-alaw.aifc
deleted file mode 100644
index 3b7fbd2af75a0a..00000000000000
Binary files a/Lib/test/audiodata/pluck-alaw.aifc and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm16.aiff b/Lib/test/audiodata/pluck-pcm16.aiff
deleted file mode 100644
index 6c8c40d1409289..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm16.aiff and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm16.au b/Lib/test/audiodata/pluck-pcm16.au
deleted file mode 100644
index 398f07f0719743..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm16.au and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm24.aiff b/Lib/test/audiodata/pluck-pcm24.aiff
deleted file mode 100644
index 8eba145a44d37a..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm24.aiff and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm24.au b/Lib/test/audiodata/pluck-pcm24.au
deleted file mode 100644
index 0bb230418a3844..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm24.au and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm32.aiff b/Lib/test/audiodata/pluck-pcm32.aiff
deleted file mode 100644
index 46ac0373f6abbc..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm32.aiff and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm32.au b/Lib/test/audiodata/pluck-pcm32.au
deleted file mode 100644
index 92ee5965e40197..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm32.au and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm8.aiff b/Lib/test/audiodata/pluck-pcm8.aiff
deleted file mode 100644
index 5de4f3b2d879ba..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm8.aiff and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-pcm8.au b/Lib/test/audiodata/pluck-pcm8.au
deleted file mode 100644
index b7172c8f23475b..00000000000000
Binary files a/Lib/test/audiodata/pluck-pcm8.au and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-ulaw.aifc b/Lib/test/audiodata/pluck-ulaw.aifc
deleted file mode 100644
index 3085cf097fb18a..00000000000000
Binary files a/Lib/test/audiodata/pluck-ulaw.aifc and /dev/null differ
diff --git a/Lib/test/audiodata/pluck-ulaw.au b/Lib/test/audiodata/pluck-ulaw.au
deleted file mode 100644
index 11103535c6b6a4..00000000000000
Binary files a/Lib/test/audiodata/pluck-ulaw.au and /dev/null differ
diff --git a/Lib/test/audiotest.au b/Lib/test/audiotest.au
deleted file mode 100644
index f76b0501b8c61b..00000000000000
Binary files a/Lib/test/audiotest.au and /dev/null differ
diff --git a/Lib/test/audit-tests.py b/Lib/test/audit-tests.py
index 0edc9d9c472766..ce4a11b119c900 100644
--- a/Lib/test/audit-tests.py
+++ b/Lib/test/audit-tests.py
@@ -186,7 +186,7 @@ class C(A):
     )
 
 
-def test_open():
+def test_open(testfn):
     # SSLContext.load_dh_params uses _Py_fopen_obj rather than normal open()
     try:
         import ssl
@@ -199,11 +199,11 @@ def test_open():
     # All of them should fail
     with TestHook(raise_on_events={"open"}) as hook:
         for fn, *args in [
-            (open, sys.argv[2], "r"),
+            (open, testfn, "r"),
             (open, sys.executable, "rb"),
             (open, 3, "wb"),
-            (open, sys.argv[2], "w", -1, None, None, None, False, lambda *a: 1),
-            (load_dh_params, sys.argv[2]),
+            (open, testfn, "w", -1, None, None, None, False, lambda *a: 1),
+            (load_dh_params, testfn),
         ]:
             if not fn:
                 continue
@@ -216,11 +216,11 @@ def test_open():
         [
             i
             for i in [
-                (sys.argv[2], "r"),
+                (testfn, "r"),
                 (sys.executable, "r"),
                 (3, "w"),
-                (sys.argv[2], "w"),
-                (sys.argv[2], "rb") if load_dh_params else None,
+                (testfn, "w"),
+                (testfn, "rb") if load_dh_params else None,
             ]
             if i is not None
         ],
@@ -289,7 +289,7 @@ def hook(event, args):
 
 
 def test_unraisablehook():
-    from _testcapi import write_unraisable_exc
+    from _testcapi import err_formatunraisable
 
     def unraisablehook(hookargs):
         pass
@@ -302,7 +302,8 @@ def hook(event, args):
 
     sys.addaudithook(hook)
     sys.unraisablehook = unraisablehook
-    write_unraisable_exc(RuntimeError("nonfatal-error"), "for audit hook test", None)
+    err_formatunraisable(RuntimeError("nonfatal-error"),
+                         "Exception ignored for audit hook test")
 
 
 def test_winreg():
@@ -398,15 +399,18 @@ def hook(event, *args):
     cx2 = sqlite3.Connection(":memory:")
 
     # Configured without --enable-loadable-sqlite-extensions
-    if hasattr(sqlite3.Connection, "enable_load_extension"):
-        cx1.enable_load_extension(False)
-        try:
-            cx1.load_extension("test")
-        except sqlite3.OperationalError:
-            pass
-        else:
-            raise RuntimeError("Expected sqlite3.load_extension to fail")
-
+    try:
+        if hasattr(sqlite3.Connection, "enable_load_extension"):
+            cx1.enable_load_extension(False)
+            try:
+                cx1.load_extension("test")
+            except sqlite3.OperationalError:
+                pass
+            else:
+                raise RuntimeError("Expected sqlite3.load_extension to fail")
+    finally:
+        cx1.close()
+        cx2.close()
 
 def test_sys_getframe():
     import sys
@@ -451,6 +455,9 @@ def __call__(self):
     i = _thread.start_new_thread(test_func(), ())
     lock.acquire()
 
+    handle = _thread.start_joinable_thread(test_func())
+    handle.join()
+
 
 def test_threading_abort():
     # Ensures that aborting PyThreadState_New raises the correct exception
@@ -514,10 +521,39 @@ def test_not_in_gc():
             assert hook not in o
 
 
+def test_time(mode):
+    import time
+
+    def hook(event, args):
+        if event.startswith("time."):
+            if mode == 'print':
+                print(event, *args)
+            elif mode == 'fail':
+                raise AssertionError('hook failed')
+    sys.addaudithook(hook)
+
+    time.sleep(0)
+    time.sleep(0.0625)  # 1/16, a small exact float
+    try:
+        time.sleep(-1)
+    except ValueError:
+        pass
+
+def test_sys_monitoring_register_callback():
+    import sys
+
+    def hook(event, args):
+        if event.startswith("sys.monitoring"):
+            print(event, args)
+
+    sys.addaudithook(hook)
+    sys.monitoring.register_callback(1, 1, None)
+
+
 if __name__ == "__main__":
     from test.support import suppress_msvcrt_asserts
 
     suppress_msvcrt_asserts()
 
     test = sys.argv[1]
-    globals()[test]()
+    globals()[test](*sys.argv[2:])
diff --git a/Lib/test/autotest.py b/Lib/test/autotest.py
index fa85cc153a133a..b5a1fab404c72d 100644
--- a/Lib/test/autotest.py
+++ b/Lib/test/autotest.py
@@ -1,5 +1,5 @@
 # This should be equivalent to running regrtest.py from the cmdline.
 # It can be especially handy if you're in an interactive shell, e.g.,
 # from test import autotest.
-from test.libregrtest import main
+from test.libregrtest.main import main
 main()
diff --git a/Lib/test/badsyntax_future3.py b/Lib/test/badsyntax_future3.py
deleted file mode 100644
index f1c8417edaa297..00000000000000
--- a/Lib/test/badsyntax_future3.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""This is a test"""
-from __future__ import nested_scopes
-from __future__ import rested_snopes
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-result = f(2)(4)
diff --git a/Lib/test/badsyntax_future4.py b/Lib/test/badsyntax_future4.py
deleted file mode 100644
index b5f4c98e922ac2..00000000000000
--- a/Lib/test/badsyntax_future4.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""This is a test"""
-import __future__
-from __future__ import nested_scopes
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-result = f(2)(4)
diff --git a/Lib/test/badsyntax_future5.py b/Lib/test/badsyntax_future5.py
deleted file mode 100644
index 8a7e5fcb70ff2e..00000000000000
--- a/Lib/test/badsyntax_future5.py
+++ /dev/null
@@ -1,12 +0,0 @@
-"""This is a test"""
-from __future__ import nested_scopes
-import foo
-from __future__ import nested_scopes
-
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-result = f(2)(4)
diff --git a/Lib/test/badsyntax_future6.py b/Lib/test/badsyntax_future6.py
deleted file mode 100644
index 5a8b55a02c41bf..00000000000000
--- a/Lib/test/badsyntax_future6.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""This is a test"""
-"this isn't a doc string"
-from __future__ import nested_scopes
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-result = f(2)(4)
diff --git a/Lib/test/badsyntax_future7.py b/Lib/test/badsyntax_future7.py
deleted file mode 100644
index 131db2c2164cf2..00000000000000
--- a/Lib/test/badsyntax_future7.py
+++ /dev/null
@@ -1,11 +0,0 @@
-"""This is a test"""
-
-from __future__ import nested_scopes; import string; from __future__ import \
-     nested_scopes
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-result = f(2)(4)
diff --git a/Lib/test/badsyntax_future8.py b/Lib/test/badsyntax_future8.py
deleted file mode 100644
index ca45289e2e5a4f..00000000000000
--- a/Lib/test/badsyntax_future8.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""This is a test"""
-
-from __future__ import *
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-print(f(2)(4))
diff --git a/Lib/test/badsyntax_future9.py b/Lib/test/badsyntax_future9.py
deleted file mode 100644
index 916de06ab71e97..00000000000000
--- a/Lib/test/badsyntax_future9.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""This is a test"""
-
-from __future__ import nested_scopes, braces
-
-def f(x):
-    def g(y):
-        return x + y
-    return g
-
-print(f(2)(4))
diff --git a/Lib/test/bisect_cmd.py b/Lib/test/bisect_cmd.py
index 0bdd7a43c03f7b..5cb804bd469dc3 100755
--- a/Lib/test/bisect_cmd.py
+++ b/Lib/test/bisect_cmd.py
@@ -109,9 +109,10 @@ def parse_args():
 
 def main():
     args = parse_args()
-    if '-w' in args.test_args or '--verbose2' in args.test_args:
-        print("WARNING: -w/--verbose2 option should not be used to bisect!")
-        print()
+    for opt in ('-w', '--rerun', '--verbose2'):
+        if opt in args.test_args:
+            print(f"WARNING: {opt} option should not be used to bisect!")
+            print()
 
     if args.input:
         with open(args.input) as fp:
diff --git a/Lib/test/allsans.pem b/Lib/test/certdata/allsans.pem
similarity index 100%
rename from Lib/test/allsans.pem
rename to Lib/test/certdata/allsans.pem
diff --git a/Lib/test/badcert.pem b/Lib/test/certdata/badcert.pem
similarity index 100%
rename from Lib/test/badcert.pem
rename to Lib/test/certdata/badcert.pem
diff --git a/Lib/test/badkey.pem b/Lib/test/certdata/badkey.pem
similarity index 100%
rename from Lib/test/badkey.pem
rename to Lib/test/certdata/badkey.pem
diff --git a/Lib/test/capath/4e1295a3.0 b/Lib/test/certdata/capath/4e1295a3.0
similarity index 100%
rename from Lib/test/capath/4e1295a3.0
rename to Lib/test/certdata/capath/4e1295a3.0
diff --git a/Lib/test/capath/5ed36f99.0 b/Lib/test/certdata/capath/5ed36f99.0
similarity index 100%
rename from Lib/test/capath/5ed36f99.0
rename to Lib/test/certdata/capath/5ed36f99.0
diff --git a/Lib/test/capath/6e88d7b8.0 b/Lib/test/certdata/capath/6e88d7b8.0
similarity index 100%
rename from Lib/test/capath/6e88d7b8.0
rename to Lib/test/certdata/capath/6e88d7b8.0
diff --git a/Lib/test/capath/99d0fa06.0 b/Lib/test/certdata/capath/99d0fa06.0
similarity index 100%
rename from Lib/test/capath/99d0fa06.0
rename to Lib/test/certdata/capath/99d0fa06.0
diff --git a/Lib/test/capath/b1930218.0 b/Lib/test/certdata/capath/b1930218.0
similarity index 100%
rename from Lib/test/capath/b1930218.0
rename to Lib/test/certdata/capath/b1930218.0
diff --git a/Lib/test/capath/ceff1710.0 b/Lib/test/certdata/capath/ceff1710.0
similarity index 100%
rename from Lib/test/capath/ceff1710.0
rename to Lib/test/certdata/capath/ceff1710.0
diff --git a/Lib/test/ffdh3072.pem b/Lib/test/certdata/ffdh3072.pem
similarity index 100%
rename from Lib/test/ffdh3072.pem
rename to Lib/test/certdata/ffdh3072.pem
diff --git a/Lib/test/idnsans.pem b/Lib/test/certdata/idnsans.pem
similarity index 100%
rename from Lib/test/idnsans.pem
rename to Lib/test/certdata/idnsans.pem
diff --git a/Lib/test/keycert.passwd.pem b/Lib/test/certdata/keycert.passwd.pem
similarity index 100%
rename from Lib/test/keycert.passwd.pem
rename to Lib/test/certdata/keycert.passwd.pem
diff --git a/Lib/test/keycert.pem b/Lib/test/certdata/keycert.pem
similarity index 100%
rename from Lib/test/keycert.pem
rename to Lib/test/certdata/keycert.pem
diff --git a/Lib/test/keycert2.pem b/Lib/test/certdata/keycert2.pem
similarity index 100%
rename from Lib/test/keycert2.pem
rename to Lib/test/certdata/keycert2.pem
diff --git a/Lib/test/keycert3.pem b/Lib/test/certdata/keycert3.pem
similarity index 100%
rename from Lib/test/keycert3.pem
rename to Lib/test/certdata/keycert3.pem
diff --git a/Lib/test/keycert4.pem b/Lib/test/certdata/keycert4.pem
similarity index 100%
rename from Lib/test/keycert4.pem
rename to Lib/test/certdata/keycert4.pem
diff --git a/Lib/test/keycertecc.pem b/Lib/test/certdata/keycertecc.pem
similarity index 100%
rename from Lib/test/keycertecc.pem
rename to Lib/test/certdata/keycertecc.pem
diff --git a/Lib/test/make_ssl_certs.py b/Lib/test/certdata/make_ssl_certs.py
similarity index 100%
rename from Lib/test/make_ssl_certs.py
rename to Lib/test/certdata/make_ssl_certs.py
diff --git a/Lib/test/nokia.pem b/Lib/test/certdata/nokia.pem
similarity index 100%
rename from Lib/test/nokia.pem
rename to Lib/test/certdata/nokia.pem
diff --git a/Lib/test/nosan.pem b/Lib/test/certdata/nosan.pem
similarity index 100%
rename from Lib/test/nosan.pem
rename to Lib/test/certdata/nosan.pem
diff --git a/Lib/test/nullbytecert.pem b/Lib/test/certdata/nullbytecert.pem
similarity index 100%
rename from Lib/test/nullbytecert.pem
rename to Lib/test/certdata/nullbytecert.pem
diff --git a/Lib/test/nullcert.pem b/Lib/test/certdata/nullcert.pem
similarity index 100%
rename from Lib/test/nullcert.pem
rename to Lib/test/certdata/nullcert.pem
diff --git a/Lib/test/pycacert.pem b/Lib/test/certdata/pycacert.pem
similarity index 100%
rename from Lib/test/pycacert.pem
rename to Lib/test/certdata/pycacert.pem
diff --git a/Lib/test/pycakey.pem b/Lib/test/certdata/pycakey.pem
similarity index 100%
rename from Lib/test/pycakey.pem
rename to Lib/test/certdata/pycakey.pem
diff --git a/Lib/test/revocation.crl b/Lib/test/certdata/revocation.crl
similarity index 100%
rename from Lib/test/revocation.crl
rename to Lib/test/certdata/revocation.crl
diff --git a/Lib/test/secp384r1.pem b/Lib/test/certdata/secp384r1.pem
similarity index 100%
rename from Lib/test/secp384r1.pem
rename to Lib/test/certdata/secp384r1.pem
diff --git a/Lib/test/selfsigned_pythontestdotnet.pem b/Lib/test/certdata/selfsigned_pythontestdotnet.pem
similarity index 100%
rename from Lib/test/selfsigned_pythontestdotnet.pem
rename to Lib/test/certdata/selfsigned_pythontestdotnet.pem
diff --git a/Lib/test/ssl_cert.pem b/Lib/test/certdata/ssl_cert.pem
similarity index 100%
rename from Lib/test/ssl_cert.pem
rename to Lib/test/certdata/ssl_cert.pem
diff --git a/Lib/test/ssl_key.passwd.pem b/Lib/test/certdata/ssl_key.passwd.pem
similarity index 100%
rename from Lib/test/ssl_key.passwd.pem
rename to Lib/test/certdata/ssl_key.passwd.pem
diff --git a/Lib/test/ssl_key.pem b/Lib/test/certdata/ssl_key.pem
similarity index 100%
rename from Lib/test/ssl_key.pem
rename to Lib/test/certdata/ssl_key.pem
diff --git a/Lib/test/talos-2019-0758.pem b/Lib/test/certdata/talos-2019-0758.pem
similarity index 100%
rename from Lib/test/talos-2019-0758.pem
rename to Lib/test/certdata/talos-2019-0758.pem
diff --git a/Lib/test/clinic.test b/Lib/test/clinic.test
deleted file mode 100644
index 564205274edd73..00000000000000
--- a/Lib/test/clinic.test
+++ /dev/null
@@ -1,4273 +0,0 @@
-/*[clinic input]
-output preset block
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=3c81ac2402d06a8b]*/
-
-
-/*[clinic input]
-test_object_converter
-
-    a: object
-    b: object(converter="PyUnicode_FSConverter")
-    c: object(subclass_of="&PyUnicode_Type")
-    d: object(type="PyUnicode_Object *")
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_object_converter__doc__,
-"test_object_converter($module, a, b, c, d, /)\n"
-"--\n"
-"\n");
-
-#define TEST_OBJECT_CONVERTER_METHODDEF    \
-    {"test_object_converter", _PyCFunction_CAST(test_object_converter), METH_FASTCALL, test_object_converter__doc__},
-
-static PyObject *
-test_object_converter_impl(PyObject *module, PyObject *a, PyObject *b,
-                           PyObject *c, PyUnicode_Object *d);
-
-static PyObject *
-test_object_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c;
-    PyUnicode_Object *d;
-
-    if (!_PyArg_CheckPositional("test_object_converter", nargs, 4, 4)) {
-        goto exit;
-    }
-    a = args[0];
-    if (!PyUnicode_FSConverter(args[1], &b)) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[2])) {
-        _PyArg_BadArgument("test_object_converter", "argument 3", "str", args[2]);
-        goto exit;
-    }
-    c = args[2];
-    d = (PyUnicode_Object *)args[3];
-    return_value = test_object_converter_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_object_converter_impl(PyObject *module, PyObject *a, PyObject *b,
-                           PyObject *c, PyUnicode_Object *d)
-/*[clinic end generated code: output=886f4f9b598726b6 input=005e6a8a711a869b]*/
-
-
-/*[clinic input]
-test_object_converter_one_arg
-
-    a: object
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_object_converter_one_arg__doc__,
-"test_object_converter_one_arg($module, a, /)\n"
-"--\n"
-"\n");
-
-#define TEST_OBJECT_CONVERTER_ONE_ARG_METHODDEF    \
-    {"test_object_converter_one_arg", (PyCFunction)test_object_converter_one_arg, METH_O, test_object_converter_one_arg__doc__},
-
-static PyObject *
-test_object_converter_one_arg(PyObject *module, PyObject *a)
-/*[clinic end generated code: output=6da755f8502139df input=d635d92a421f1ca3]*/
-
-
-/*[clinic input]
-test_objects_converter
-
-    a: object
-    b: object = NULL
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_objects_converter__doc__,
-"test_objects_converter($module, a, b=<unrepresentable>, /)\n"
-"--\n"
-"\n");
-
-#define TEST_OBJECTS_CONVERTER_METHODDEF    \
-    {"test_objects_converter", _PyCFunction_CAST(test_objects_converter), METH_FASTCALL, test_objects_converter__doc__},
-
-static PyObject *
-test_objects_converter_impl(PyObject *module, PyObject *a, PyObject *b);
-
-static PyObject *
-test_objects_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *a;
-    PyObject *b = NULL;
-
-    if (!_PyArg_CheckPositional("test_objects_converter", nargs, 1, 2)) {
-        goto exit;
-    }
-    a = args[0];
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    b = args[1];
-skip_optional:
-    return_value = test_objects_converter_impl(module, a, b);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_objects_converter_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=fc26328b79d46bb7 input=4cbb3d9edd2a36f3]*/
-
-
-/*[clinic input]
-test_object_converter_subclass_of
-
-    a: object(subclass_of="&PyLong_Type")
-    b: object(subclass_of="&PyTuple_Type")
-    c: object(subclass_of="&PyList_Type")
-    d: object(subclass_of="&PySet_Type")
-    e: object(subclass_of="&PyFrozenSet_Type")
-    f: object(subclass_of="&PyDict_Type")
-    g: object(subclass_of="&PyUnicode_Type")
-    h: object(subclass_of="&PyBytes_Type")
-    i: object(subclass_of="&PyByteArray_Type")
-    j: object(subclass_of="&MyType")
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_object_converter_subclass_of__doc__,
-"test_object_converter_subclass_of($module, a, b, c, d, e, f, g, h, i,\n"
-"                                  j, /)\n"
-"--\n"
-"\n");
-
-#define TEST_OBJECT_CONVERTER_SUBCLASS_OF_METHODDEF    \
-    {"test_object_converter_subclass_of", _PyCFunction_CAST(test_object_converter_subclass_of), METH_FASTCALL, test_object_converter_subclass_of__doc__},
-
-static PyObject *
-test_object_converter_subclass_of_impl(PyObject *module, PyObject *a,
-                                       PyObject *b, PyObject *c, PyObject *d,
-                                       PyObject *e, PyObject *f, PyObject *g,
-                                       PyObject *h, PyObject *i, PyObject *j);
-
-static PyObject *
-test_object_converter_subclass_of(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c;
-    PyObject *d;
-    PyObject *e;
-    PyObject *f;
-    PyObject *g;
-    PyObject *h;
-    PyObject *i;
-    PyObject *j;
-
-    if (!_PyArg_CheckPositional("test_object_converter_subclass_of", nargs, 10, 10)) {
-        goto exit;
-    }
-    if (!PyLong_Check(args[0])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 1", "int", args[0]);
-        goto exit;
-    }
-    a = args[0];
-    if (!PyTuple_Check(args[1])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 2", "tuple", args[1]);
-        goto exit;
-    }
-    b = args[1];
-    if (!PyList_Check(args[2])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 3", "list", args[2]);
-        goto exit;
-    }
-    c = args[2];
-    if (!PySet_Check(args[3])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 4", "set", args[3]);
-        goto exit;
-    }
-    d = args[3];
-    if (!PyFrozenSet_Check(args[4])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 5", "frozenset", args[4]);
-        goto exit;
-    }
-    e = args[4];
-    if (!PyDict_Check(args[5])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 6", "dict", args[5]);
-        goto exit;
-    }
-    f = args[5];
-    if (!PyUnicode_Check(args[6])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 7", "str", args[6]);
-        goto exit;
-    }
-    g = args[6];
-    if (!PyBytes_Check(args[7])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 8", "bytes", args[7]);
-        goto exit;
-    }
-    h = args[7];
-    if (!PyByteArray_Check(args[8])) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 9", "bytearray", args[8]);
-        goto exit;
-    }
-    i = args[8];
-    if (!PyObject_TypeCheck(args[9], &MyType)) {
-        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 10", (&MyType)->tp_name, args[9]);
-        goto exit;
-    }
-    j = args[9];
-    return_value = test_object_converter_subclass_of_impl(module, a, b, c, d, e, f, g, h, i, j);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_object_converter_subclass_of_impl(PyObject *module, PyObject *a,
-                                       PyObject *b, PyObject *c, PyObject *d,
-                                       PyObject *e, PyObject *f, PyObject *g,
-                                       PyObject *h, PyObject *i, PyObject *j)
-/*[clinic end generated code: output=e4b07c9a54479a40 input=31b06b772d5f983e]*/
-
-
-/*[clinic input]
-test_PyBytesObject_converter
-
-    a: PyBytesObject
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_PyBytesObject_converter__doc__,
-"test_PyBytesObject_converter($module, a, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PYBYTESOBJECT_CONVERTER_METHODDEF    \
-    {"test_PyBytesObject_converter", (PyCFunction)test_PyBytesObject_converter, METH_O, test_PyBytesObject_converter__doc__},
-
-static PyObject *
-test_PyBytesObject_converter_impl(PyObject *module, PyBytesObject *a);
-
-static PyObject *
-test_PyBytesObject_converter(PyObject *module, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    PyBytesObject *a;
-
-    if (!PyBytes_Check(arg)) {
-        _PyArg_BadArgument("test_PyBytesObject_converter", "argument", "bytes", arg);
-        goto exit;
-    }
-    a = (PyBytesObject *)arg;
-    return_value = test_PyBytesObject_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_PyBytesObject_converter_impl(PyObject *module, PyBytesObject *a)
-/*[clinic end generated code: output=7539d628e6fceace input=12b10c7cb5750400]*/
-
-
-/*[clinic input]
-test_PyByteArrayObject_converter
-
-    a: PyByteArrayObject
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_PyByteArrayObject_converter__doc__,
-"test_PyByteArrayObject_converter($module, a, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PYBYTEARRAYOBJECT_CONVERTER_METHODDEF    \
-    {"test_PyByteArrayObject_converter", (PyCFunction)test_PyByteArrayObject_converter, METH_O, test_PyByteArrayObject_converter__doc__},
-
-static PyObject *
-test_PyByteArrayObject_converter_impl(PyObject *module, PyByteArrayObject *a);
-
-static PyObject *
-test_PyByteArrayObject_converter(PyObject *module, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    PyByteArrayObject *a;
-
-    if (!PyByteArray_Check(arg)) {
-        _PyArg_BadArgument("test_PyByteArrayObject_converter", "argument", "bytearray", arg);
-        goto exit;
-    }
-    a = (PyByteArrayObject *)arg;
-    return_value = test_PyByteArrayObject_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_PyByteArrayObject_converter_impl(PyObject *module, PyByteArrayObject *a)
-/*[clinic end generated code: output=1245af9f5b3e355e input=5a657da535d194ae]*/
-
-
-/*[clinic input]
-test_unicode_converter
-
-    a: unicode
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_unicode_converter__doc__,
-"test_unicode_converter($module, a, /)\n"
-"--\n"
-"\n");
-
-#define TEST_UNICODE_CONVERTER_METHODDEF    \
-    {"test_unicode_converter", (PyCFunction)test_unicode_converter, METH_O, test_unicode_converter__doc__},
-
-static PyObject *
-test_unicode_converter_impl(PyObject *module, PyObject *a);
-
-static PyObject *
-test_unicode_converter(PyObject *module, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    PyObject *a;
-
-    if (!PyUnicode_Check(arg)) {
-        _PyArg_BadArgument("test_unicode_converter", "argument", "str", arg);
-        goto exit;
-    }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
-    a = arg;
-    return_value = test_unicode_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_unicode_converter_impl(PyObject *module, PyObject *a)
-/*[clinic end generated code: output=18f1e3880c862611 input=aa33612df92aa9c5]*/
-
-
-/*[clinic input]
-test_bool_converter
-
-    a: bool = True
-    b: bool(accept={object}) = True
-    c: bool(accept={int}) = True
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_bool_converter__doc__,
-"test_bool_converter($module, a=True, b=True, c=True, /)\n"
-"--\n"
-"\n");
-
-#define TEST_BOOL_CONVERTER_METHODDEF    \
-    {"test_bool_converter", _PyCFunction_CAST(test_bool_converter), METH_FASTCALL, test_bool_converter__doc__},
-
-static PyObject *
-test_bool_converter_impl(PyObject *module, int a, int b, int c);
-
-static PyObject *
-test_bool_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int a = 1;
-    int b = 1;
-    int c = 1;
-
-    if (!_PyArg_CheckPositional("test_bool_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    a = PyObject_IsTrue(args[0]);
-    if (a < 0) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    b = PyObject_IsTrue(args[1]);
-    if (b < 0) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    c = _PyLong_AsInt(args[2]);
-    if (c == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_bool_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_bool_converter_impl(PyObject *module, int a, int b, int c)
-/*[clinic end generated code: output=27f0e653a70b9be3 input=939854fa9f248c60]*/
-
-
-/*[clinic input]
-test_char_converter
-
-    a: char = b'A'
-    b: char = b'\a'
-    c: char = b'\b'
-    d: char = b'\t'
-    e: char = b'\n'
-    f: char = b'\v'
-    g: char = b'\f'
-    h: char = b'\r'
-    i: char = b'"'
-    j: char = b"'"
-    k: char = b'?'
-    l: char = b'\\'
-    m: char = b'\000'
-    n: char = b'\377'
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_char_converter__doc__,
-"test_char_converter($module, a=b\'A\', b=b\'\\x07\', c=b\'\\x08\', d=b\'\\t\',\n"
-"                    e=b\'\\n\', f=b\'\\x0b\', g=b\'\\x0c\', h=b\'\\r\', i=b\'\"\',\n"
-"                    j=b\"\'\", k=b\'?\', l=b\'\\\\\', m=b\'\\x00\', n=b\'\\xff\', /)\n"
-"--\n"
-"\n");
-
-#define TEST_CHAR_CONVERTER_METHODDEF    \
-    {"test_char_converter", _PyCFunction_CAST(test_char_converter), METH_FASTCALL, test_char_converter__doc__},
-
-static PyObject *
-test_char_converter_impl(PyObject *module, char a, char b, char c, char d,
-                         char e, char f, char g, char h, char i, char j,
-                         char k, char l, char m, char n);
-
-static PyObject *
-test_char_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    char a = 'A';
-    char b = '\x07';
-    char c = '\x08';
-    char d = '\t';
-    char e = '\n';
-    char f = '\x0b';
-    char g = '\x0c';
-    char h = '\r';
-    char i = '"';
-    char j = '\'';
-    char k = '?';
-    char l = '\\';
-    char m = '\x00';
-    char n = '\xff';
-
-    if (!_PyArg_CheckPositional("test_char_converter", nargs, 0, 14)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[0]) && PyBytes_GET_SIZE(args[0]) == 1) {
-        a = PyBytes_AS_STRING(args[0])[0];
-    }
-    else if (PyByteArray_Check(args[0]) && PyByteArray_GET_SIZE(args[0]) == 1) {
-        a = PyByteArray_AS_STRING(args[0])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 1", "a byte string of length 1", args[0]);
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[1]) && PyBytes_GET_SIZE(args[1]) == 1) {
-        b = PyBytes_AS_STRING(args[1])[0];
-    }
-    else if (PyByteArray_Check(args[1]) && PyByteArray_GET_SIZE(args[1]) == 1) {
-        b = PyByteArray_AS_STRING(args[1])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 2", "a byte string of length 1", args[1]);
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[2]) && PyBytes_GET_SIZE(args[2]) == 1) {
-        c = PyBytes_AS_STRING(args[2])[0];
-    }
-    else if (PyByteArray_Check(args[2]) && PyByteArray_GET_SIZE(args[2]) == 1) {
-        c = PyByteArray_AS_STRING(args[2])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 3", "a byte string of length 1", args[2]);
-        goto exit;
-    }
-    if (nargs < 4) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[3]) && PyBytes_GET_SIZE(args[3]) == 1) {
-        d = PyBytes_AS_STRING(args[3])[0];
-    }
-    else if (PyByteArray_Check(args[3]) && PyByteArray_GET_SIZE(args[3]) == 1) {
-        d = PyByteArray_AS_STRING(args[3])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 4", "a byte string of length 1", args[3]);
-        goto exit;
-    }
-    if (nargs < 5) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[4]) && PyBytes_GET_SIZE(args[4]) == 1) {
-        e = PyBytes_AS_STRING(args[4])[0];
-    }
-    else if (PyByteArray_Check(args[4]) && PyByteArray_GET_SIZE(args[4]) == 1) {
-        e = PyByteArray_AS_STRING(args[4])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 5", "a byte string of length 1", args[4]);
-        goto exit;
-    }
-    if (nargs < 6) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[5]) && PyBytes_GET_SIZE(args[5]) == 1) {
-        f = PyBytes_AS_STRING(args[5])[0];
-    }
-    else if (PyByteArray_Check(args[5]) && PyByteArray_GET_SIZE(args[5]) == 1) {
-        f = PyByteArray_AS_STRING(args[5])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 6", "a byte string of length 1", args[5]);
-        goto exit;
-    }
-    if (nargs < 7) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[6]) && PyBytes_GET_SIZE(args[6]) == 1) {
-        g = PyBytes_AS_STRING(args[6])[0];
-    }
-    else if (PyByteArray_Check(args[6]) && PyByteArray_GET_SIZE(args[6]) == 1) {
-        g = PyByteArray_AS_STRING(args[6])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 7", "a byte string of length 1", args[6]);
-        goto exit;
-    }
-    if (nargs < 8) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[7]) && PyBytes_GET_SIZE(args[7]) == 1) {
-        h = PyBytes_AS_STRING(args[7])[0];
-    }
-    else if (PyByteArray_Check(args[7]) && PyByteArray_GET_SIZE(args[7]) == 1) {
-        h = PyByteArray_AS_STRING(args[7])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 8", "a byte string of length 1", args[7]);
-        goto exit;
-    }
-    if (nargs < 9) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[8]) && PyBytes_GET_SIZE(args[8]) == 1) {
-        i = PyBytes_AS_STRING(args[8])[0];
-    }
-    else if (PyByteArray_Check(args[8]) && PyByteArray_GET_SIZE(args[8]) == 1) {
-        i = PyByteArray_AS_STRING(args[8])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 9", "a byte string of length 1", args[8]);
-        goto exit;
-    }
-    if (nargs < 10) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[9]) && PyBytes_GET_SIZE(args[9]) == 1) {
-        j = PyBytes_AS_STRING(args[9])[0];
-    }
-    else if (PyByteArray_Check(args[9]) && PyByteArray_GET_SIZE(args[9]) == 1) {
-        j = PyByteArray_AS_STRING(args[9])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 10", "a byte string of length 1", args[9]);
-        goto exit;
-    }
-    if (nargs < 11) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[10]) && PyBytes_GET_SIZE(args[10]) == 1) {
-        k = PyBytes_AS_STRING(args[10])[0];
-    }
-    else if (PyByteArray_Check(args[10]) && PyByteArray_GET_SIZE(args[10]) == 1) {
-        k = PyByteArray_AS_STRING(args[10])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 11", "a byte string of length 1", args[10]);
-        goto exit;
-    }
-    if (nargs < 12) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[11]) && PyBytes_GET_SIZE(args[11]) == 1) {
-        l = PyBytes_AS_STRING(args[11])[0];
-    }
-    else if (PyByteArray_Check(args[11]) && PyByteArray_GET_SIZE(args[11]) == 1) {
-        l = PyByteArray_AS_STRING(args[11])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 12", "a byte string of length 1", args[11]);
-        goto exit;
-    }
-    if (nargs < 13) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[12]) && PyBytes_GET_SIZE(args[12]) == 1) {
-        m = PyBytes_AS_STRING(args[12])[0];
-    }
-    else if (PyByteArray_Check(args[12]) && PyByteArray_GET_SIZE(args[12]) == 1) {
-        m = PyByteArray_AS_STRING(args[12])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 13", "a byte string of length 1", args[12]);
-        goto exit;
-    }
-    if (nargs < 14) {
-        goto skip_optional;
-    }
-    if (PyBytes_Check(args[13]) && PyBytes_GET_SIZE(args[13]) == 1) {
-        n = PyBytes_AS_STRING(args[13])[0];
-    }
-    else if (PyByteArray_Check(args[13]) && PyByteArray_GET_SIZE(args[13]) == 1) {
-        n = PyByteArray_AS_STRING(args[13])[0];
-    }
-    else {
-        _PyArg_BadArgument("test_char_converter", "argument 14", "a byte string of length 1", args[13]);
-        goto exit;
-    }
-skip_optional:
-    return_value = test_char_converter_impl(module, a, b, c, d, e, f, g, h, i, j, k, l, m, n);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_char_converter_impl(PyObject *module, char a, char b, char c, char d,
-                         char e, char f, char g, char h, char i, char j,
-                         char k, char l, char m, char n)
-/*[clinic end generated code: output=98589f02422fe6b1 input=e42330417a44feac]*/
-
-
-/*[clinic input]
-test_unsigned_char_converter
-
-    a: unsigned_char = 12
-    b: unsigned_char(bitwise=False) = 34
-    c: unsigned_char(bitwise=True) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_unsigned_char_converter__doc__,
-"test_unsigned_char_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_UNSIGNED_CHAR_CONVERTER_METHODDEF    \
-    {"test_unsigned_char_converter", _PyCFunction_CAST(test_unsigned_char_converter), METH_FASTCALL, test_unsigned_char_converter__doc__},
-
-static PyObject *
-test_unsigned_char_converter_impl(PyObject *module, unsigned char a,
-                                  unsigned char b, unsigned char c);
-
-static PyObject *
-test_unsigned_char_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    unsigned char a = 12;
-    unsigned char b = 34;
-    unsigned char c = 56;
-
-    if (!_PyArg_CheckPositional("test_unsigned_char_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    {
-        long ival = PyLong_AsLong(args[0]);
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        else if (ival < 0) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "unsigned byte integer is less than minimum");
-            goto exit;
-        }
-        else if (ival > UCHAR_MAX) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "unsigned byte integer is greater than maximum");
-            goto exit;
-        }
-        else {
-            a = (unsigned char) ival;
-        }
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    {
-        long ival = PyLong_AsLong(args[1]);
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        else if (ival < 0) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "unsigned byte integer is less than minimum");
-            goto exit;
-        }
-        else if (ival > UCHAR_MAX) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "unsigned byte integer is greater than maximum");
-            goto exit;
-        }
-        else {
-            b = (unsigned char) ival;
-        }
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    {
-        unsigned long ival = PyLong_AsUnsignedLongMask(args[2]);
-        if (ival == (unsigned long)-1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        else {
-            c = (unsigned char) ival;
-        }
-    }
-skip_optional:
-    return_value = test_unsigned_char_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_unsigned_char_converter_impl(PyObject *module, unsigned char a,
-                                  unsigned char b, unsigned char c)
-/*[clinic end generated code: output=45920dbedc22eb55 input=021414060993e289]*/
-
-
-/*[clinic input]
-test_short_converter
-
-    a: short = 12
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_short_converter__doc__,
-"test_short_converter($module, a=12, /)\n"
-"--\n"
-"\n");
-
-#define TEST_SHORT_CONVERTER_METHODDEF    \
-    {"test_short_converter", _PyCFunction_CAST(test_short_converter), METH_FASTCALL, test_short_converter__doc__},
-
-static PyObject *
-test_short_converter_impl(PyObject *module, short a);
-
-static PyObject *
-test_short_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    short a = 12;
-
-    if (!_PyArg_CheckPositional("test_short_converter", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    {
-        long ival = PyLong_AsLong(args[0]);
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        else if (ival < SHRT_MIN) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "signed short integer is less than minimum");
-            goto exit;
-        }
-        else if (ival > SHRT_MAX) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "signed short integer is greater than maximum");
-            goto exit;
-        }
-        else {
-            a = (short) ival;
-        }
-    }
-skip_optional:
-    return_value = test_short_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_short_converter_impl(PyObject *module, short a)
-/*[clinic end generated code: output=a580945bd6963d45 input=6a8a7a509a498ff4]*/
-
-
-/*[clinic input]
-test_unsigned_short_converter
-
-    a: unsigned_short = 12
-    b: unsigned_short(bitwise=False) = 34
-    c: unsigned_short(bitwise=True) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_unsigned_short_converter__doc__,
-"test_unsigned_short_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_UNSIGNED_SHORT_CONVERTER_METHODDEF    \
-    {"test_unsigned_short_converter", _PyCFunction_CAST(test_unsigned_short_converter), METH_FASTCALL, test_unsigned_short_converter__doc__},
-
-static PyObject *
-test_unsigned_short_converter_impl(PyObject *module, unsigned short a,
-                                   unsigned short b, unsigned short c);
-
-static PyObject *
-test_unsigned_short_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    unsigned short a = 12;
-    unsigned short b = 34;
-    unsigned short c = 56;
-
-    if (!_PyArg_CheckPositional("test_unsigned_short_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedShort_Converter(args[0], &a)) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedShort_Converter(args[1], &b)) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    c = (unsigned short)PyLong_AsUnsignedLongMask(args[2]);
-    if (c == (unsigned short)-1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_unsigned_short_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_unsigned_short_converter_impl(PyObject *module, unsigned short a,
-                                   unsigned short b, unsigned short c)
-/*[clinic end generated code: output=e6e990df729114fc input=cdfd8eff3d9176b4]*/
-
-
-/*[clinic input]
-test_int_converter
-
-    a: int = 12
-    b: int(accept={int}) = 34
-    c: int(accept={str}) = 45
-    d: int(type='myenum') = 67
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_int_converter__doc__,
-"test_int_converter($module, a=12, b=34, c=45, d=67, /)\n"
-"--\n"
-"\n");
-
-#define TEST_INT_CONVERTER_METHODDEF    \
-    {"test_int_converter", _PyCFunction_CAST(test_int_converter), METH_FASTCALL, test_int_converter__doc__},
-
-static PyObject *
-test_int_converter_impl(PyObject *module, int a, int b, int c, myenum d);
-
-static PyObject *
-test_int_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int a = 12;
-    int b = 34;
-    int c = 45;
-    myenum d = 67;
-
-    if (!_PyArg_CheckPositional("test_int_converter", nargs, 0, 4)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    a = _PyLong_AsInt(args[0]);
-    if (a == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    b = _PyLong_AsInt(args[1]);
-    if (b == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    if (!PyUnicode_Check(args[2])) {
-        _PyArg_BadArgument("test_int_converter", "argument 3", "a unicode character", args[2]);
-        goto exit;
-    }
-    if (PyUnicode_READY(args[2])) {
-        goto exit;
-    }
-    if (PyUnicode_GET_LENGTH(args[2]) != 1) {
-        _PyArg_BadArgument("test_int_converter", "argument 3", "a unicode character", args[2]);
-        goto exit;
-    }
-    c = PyUnicode_READ_CHAR(args[2], 0);
-    if (nargs < 4) {
-        goto skip_optional;
-    }
-    d = _PyLong_AsInt(args[3]);
-    if (d == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_int_converter_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_int_converter_impl(PyObject *module, int a, int b, int c, myenum d)
-/*[clinic end generated code: output=800993036e078c07 input=d20541fc1ca0553e]*/
-
-
-/*[clinic input]
-test_unsigned_int_converter
-
-    a: unsigned_int = 12
-    b: unsigned_int(bitwise=False) = 34
-    c: unsigned_int(bitwise=True) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_unsigned_int_converter__doc__,
-"test_unsigned_int_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_UNSIGNED_INT_CONVERTER_METHODDEF    \
-    {"test_unsigned_int_converter", _PyCFunction_CAST(test_unsigned_int_converter), METH_FASTCALL, test_unsigned_int_converter__doc__},
-
-static PyObject *
-test_unsigned_int_converter_impl(PyObject *module, unsigned int a,
-                                 unsigned int b, unsigned int c);
-
-static PyObject *
-test_unsigned_int_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    unsigned int a = 12;
-    unsigned int b = 34;
-    unsigned int c = 56;
-
-    if (!_PyArg_CheckPositional("test_unsigned_int_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedInt_Converter(args[0], &a)) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedInt_Converter(args[1], &b)) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    c = (unsigned int)PyLong_AsUnsignedLongMask(args[2]);
-    if (c == (unsigned int)-1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_unsigned_int_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_unsigned_int_converter_impl(PyObject *module, unsigned int a,
-                                 unsigned int b, unsigned int c)
-/*[clinic end generated code: output=f9cdbe410ccc98a3 input=5533534828b62fc0]*/
-
-
-/*[clinic input]
-test_long_converter
-
-    a: long = 12
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_long_converter__doc__,
-"test_long_converter($module, a=12, /)\n"
-"--\n"
-"\n");
-
-#define TEST_LONG_CONVERTER_METHODDEF    \
-    {"test_long_converter", _PyCFunction_CAST(test_long_converter), METH_FASTCALL, test_long_converter__doc__},
-
-static PyObject *
-test_long_converter_impl(PyObject *module, long a);
-
-static PyObject *
-test_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    long a = 12;
-
-    if (!_PyArg_CheckPositional("test_long_converter", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    a = PyLong_AsLong(args[0]);
-    if (a == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_long_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_long_converter_impl(PyObject *module, long a)
-/*[clinic end generated code: output=02b3a83495c1d236 input=d2179e3c9cdcde89]*/
-
-
-/*[clinic input]
-test_unsigned_long_converter
-
-    a: unsigned_long = 12
-    b: unsigned_long(bitwise=False) = 34
-    c: unsigned_long(bitwise=True) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_unsigned_long_converter__doc__,
-"test_unsigned_long_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_UNSIGNED_LONG_CONVERTER_METHODDEF    \
-    {"test_unsigned_long_converter", _PyCFunction_CAST(test_unsigned_long_converter), METH_FASTCALL, test_unsigned_long_converter__doc__},
-
-static PyObject *
-test_unsigned_long_converter_impl(PyObject *module, unsigned long a,
-                                  unsigned long b, unsigned long c);
-
-static PyObject *
-test_unsigned_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    unsigned long a = 12;
-    unsigned long b = 34;
-    unsigned long c = 56;
-
-    if (!_PyArg_CheckPositional("test_unsigned_long_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedLong_Converter(args[0], &a)) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedLong_Converter(args[1], &b)) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    if (!PyLong_Check(args[2])) {
-        _PyArg_BadArgument("test_unsigned_long_converter", "argument 3", "int", args[2]);
-        goto exit;
-    }
-    c = PyLong_AsUnsignedLongMask(args[2]);
-skip_optional:
-    return_value = test_unsigned_long_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_unsigned_long_converter_impl(PyObject *module, unsigned long a,
-                                  unsigned long b, unsigned long c)
-/*[clinic end generated code: output=540bb0ba2894e1fe input=f450d94cae1ef73b]*/
-
-
-/*[clinic input]
-test_long_long_converter
-
-    a: long_long = 12
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_long_long_converter__doc__,
-"test_long_long_converter($module, a=12, /)\n"
-"--\n"
-"\n");
-
-#define TEST_LONG_LONG_CONVERTER_METHODDEF    \
-    {"test_long_long_converter", _PyCFunction_CAST(test_long_long_converter), METH_FASTCALL, test_long_long_converter__doc__},
-
-static PyObject *
-test_long_long_converter_impl(PyObject *module, long long a);
-
-static PyObject *
-test_long_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    long long a = 12;
-
-    if (!_PyArg_CheckPositional("test_long_long_converter", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    a = PyLong_AsLongLong(args[0]);
-    if (a == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_long_long_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_long_long_converter_impl(PyObject *module, long long a)
-/*[clinic end generated code: output=f9d4ed79ad2db857 input=d5fc81577ff4dd02]*/
-
-
-/*[clinic input]
-test_unsigned_long_long_converter
-
-    a: unsigned_long_long = 12
-    b: unsigned_long_long(bitwise=False) = 34
-    c: unsigned_long_long(bitwise=True) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_unsigned_long_long_converter__doc__,
-"test_unsigned_long_long_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_UNSIGNED_LONG_LONG_CONVERTER_METHODDEF    \
-    {"test_unsigned_long_long_converter", _PyCFunction_CAST(test_unsigned_long_long_converter), METH_FASTCALL, test_unsigned_long_long_converter__doc__},
-
-static PyObject *
-test_unsigned_long_long_converter_impl(PyObject *module,
-                                       unsigned long long a,
-                                       unsigned long long b,
-                                       unsigned long long c);
-
-static PyObject *
-test_unsigned_long_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    unsigned long long a = 12;
-    unsigned long long b = 34;
-    unsigned long long c = 56;
-
-    if (!_PyArg_CheckPositional("test_unsigned_long_long_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedLongLong_Converter(args[0], &a)) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    if (!_PyLong_UnsignedLongLong_Converter(args[1], &b)) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    if (!PyLong_Check(args[2])) {
-        _PyArg_BadArgument("test_unsigned_long_long_converter", "argument 3", "int", args[2]);
-        goto exit;
-    }
-    c = PyLong_AsUnsignedLongLongMask(args[2]);
-skip_optional:
-    return_value = test_unsigned_long_long_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_unsigned_long_long_converter_impl(PyObject *module,
-                                       unsigned long long a,
-                                       unsigned long long b,
-                                       unsigned long long c)
-/*[clinic end generated code: output=3d69994f618b46bb input=a15115dc41866ff4]*/
-
-
-/*[clinic input]
-test_Py_ssize_t_converter
-
-    a: Py_ssize_t = 12
-    b: Py_ssize_t(accept={int}) = 34
-    c: Py_ssize_t(accept={int, NoneType}) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_Py_ssize_t_converter__doc__,
-"test_Py_ssize_t_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PY_SSIZE_T_CONVERTER_METHODDEF    \
-    {"test_Py_ssize_t_converter", _PyCFunction_CAST(test_Py_ssize_t_converter), METH_FASTCALL, test_Py_ssize_t_converter__doc__},
-
-static PyObject *
-test_Py_ssize_t_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
-                               Py_ssize_t c);
-
-static PyObject *
-test_Py_ssize_t_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_ssize_t a = 12;
-    Py_ssize_t b = 34;
-    Py_ssize_t c = 56;
-
-    if (!_PyArg_CheckPositional("test_Py_ssize_t_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    {
-        Py_ssize_t ival = -1;
-        PyObject *iobj = _PyNumber_Index(args[0]);
-        if (iobj != NULL) {
-            ival = PyLong_AsSsize_t(iobj);
-            Py_DECREF(iobj);
-        }
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        a = ival;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    {
-        Py_ssize_t ival = -1;
-        PyObject *iobj = _PyNumber_Index(args[1]);
-        if (iobj != NULL) {
-            ival = PyLong_AsSsize_t(iobj);
-            Py_DECREF(iobj);
-        }
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        b = ival;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    if (!_Py_convert_optional_to_ssize_t(args[2], &c)) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_Py_ssize_t_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_Py_ssize_t_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
-                               Py_ssize_t c)
-/*[clinic end generated code: output=48214bc3d01f4dd7 input=3855f184bb3f299d]*/
-
-
-/*[clinic input]
-test_slice_index_converter
-
-    a: slice_index = 12
-    b: slice_index(accept={int}) = 34
-    c: slice_index(accept={int, NoneType}) = 56
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_slice_index_converter__doc__,
-"test_slice_index_converter($module, a=12, b=34, c=56, /)\n"
-"--\n"
-"\n");
-
-#define TEST_SLICE_INDEX_CONVERTER_METHODDEF    \
-    {"test_slice_index_converter", _PyCFunction_CAST(test_slice_index_converter), METH_FASTCALL, test_slice_index_converter__doc__},
-
-static PyObject *
-test_slice_index_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
-                                Py_ssize_t c);
-
-static PyObject *
-test_slice_index_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_ssize_t a = 12;
-    Py_ssize_t b = 34;
-    Py_ssize_t c = 56;
-
-    if (!_PyArg_CheckPositional("test_slice_index_converter", nargs, 0, 3)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (!_PyEval_SliceIndex(args[0], &a)) {
-        goto exit;
-    }
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    if (!_PyEval_SliceIndexNotNone(args[1], &b)) {
-        goto exit;
-    }
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    if (!_PyEval_SliceIndex(args[2], &c)) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_slice_index_converter_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_slice_index_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
-                                Py_ssize_t c)
-/*[clinic end generated code: output=67506ed999361212 input=edeadb0ee126f531]*/
-
-
-/*[clinic input]
-test_size_t_converter
-
-    a: size_t = 12
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_size_t_converter__doc__,
-"test_size_t_converter($module, a=12, /)\n"
-"--\n"
-"\n");
-
-#define TEST_SIZE_T_CONVERTER_METHODDEF    \
-    {"test_size_t_converter", _PyCFunction_CAST(test_size_t_converter), METH_FASTCALL, test_size_t_converter__doc__},
-
-static PyObject *
-test_size_t_converter_impl(PyObject *module, size_t a);
-
-static PyObject *
-test_size_t_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    size_t a = 12;
-
-    if (!_PyArg_CheckPositional("test_size_t_converter", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (!_PyLong_Size_t_Converter(args[0], &a)) {
-        goto exit;
-    }
-skip_optional:
-    return_value = test_size_t_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_size_t_converter_impl(PyObject *module, size_t a)
-/*[clinic end generated code: output=1653ecb5cbf775aa input=52e93a0fed0f1fb3]*/
-
-
-/*[clinic input]
-test_float_converter
-
-    a: float = 12.5
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_float_converter__doc__,
-"test_float_converter($module, a=12.5, /)\n"
-"--\n"
-"\n");
-
-#define TEST_FLOAT_CONVERTER_METHODDEF    \
-    {"test_float_converter", _PyCFunction_CAST(test_float_converter), METH_FASTCALL, test_float_converter__doc__},
-
-static PyObject *
-test_float_converter_impl(PyObject *module, float a);
-
-static PyObject *
-test_float_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    float a = 12.5;
-
-    if (!_PyArg_CheckPositional("test_float_converter", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (PyFloat_CheckExact(args[0])) {
-        a = (float) (PyFloat_AS_DOUBLE(args[0]));
-    }
-    else
-    {
-        a = (float) PyFloat_AsDouble(args[0]);
-        if (a == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-skip_optional:
-    return_value = test_float_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_float_converter_impl(PyObject *module, float a)
-/*[clinic end generated code: output=36ad006990a8a91e input=259c0d98eca35034]*/
-
-
-/*[clinic input]
-test_double_converter
-
-    a: double = 12.5
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_double_converter__doc__,
-"test_double_converter($module, a=12.5, /)\n"
-"--\n"
-"\n");
-
-#define TEST_DOUBLE_CONVERTER_METHODDEF    \
-    {"test_double_converter", _PyCFunction_CAST(test_double_converter), METH_FASTCALL, test_double_converter__doc__},
-
-static PyObject *
-test_double_converter_impl(PyObject *module, double a);
-
-static PyObject *
-test_double_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    double a = 12.5;
-
-    if (!_PyArg_CheckPositional("test_double_converter", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    if (PyFloat_CheckExact(args[0])) {
-        a = PyFloat_AS_DOUBLE(args[0]);
-    }
-    else
-    {
-        a = PyFloat_AsDouble(args[0]);
-        if (a == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-skip_optional:
-    return_value = test_double_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_double_converter_impl(PyObject *module, double a)
-/*[clinic end generated code: output=7435925592bac795 input=c6a9945706a41c27]*/
-
-
-/*[clinic input]
-test_Py_complex_converter
-
-    a: Py_complex
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_Py_complex_converter__doc__,
-"test_Py_complex_converter($module, a, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PY_COMPLEX_CONVERTER_METHODDEF    \
-    {"test_Py_complex_converter", (PyCFunction)test_Py_complex_converter, METH_O, test_Py_complex_converter__doc__},
-
-static PyObject *
-test_Py_complex_converter_impl(PyObject *module, Py_complex a);
-
-static PyObject *
-test_Py_complex_converter(PyObject *module, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    Py_complex a;
-
-    a = PyComplex_AsCComplex(arg);
-    if (PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = test_Py_complex_converter_impl(module, a);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_Py_complex_converter_impl(PyObject *module, Py_complex a)
-/*[clinic end generated code: output=c2ecbec2144ca540 input=070f216a515beb79]*/
-
-
-/*[clinic input]
-test_str_converter
-
-    a: str = NULL
-    b: str = "ab"
-    c: str(accept={str}) = "cd"
-    d: str(accept={robuffer}) = "cef"
-    e: str(accept={str, NoneType}) = "gh"
-    f: str(accept={robuffer}, zeroes=True) = "ij"
-    g: str(accept={robuffer, str}, zeroes=True) = "kl"
-    h: str(accept={robuffer, str, NoneType}, zeroes=True) = "mn"
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_str_converter__doc__,
-"test_str_converter($module, a=<unrepresentable>, b=\'ab\', c=\'cd\',\n"
-"                   d=\'cef\', e=\'gh\', f=\'ij\', g=\'kl\', h=\'mn\', /)\n"
-"--\n"
-"\n");
-
-#define TEST_STR_CONVERTER_METHODDEF    \
-    {"test_str_converter", _PyCFunction_CAST(test_str_converter), METH_FASTCALL, test_str_converter__doc__},
-
-static PyObject *
-test_str_converter_impl(PyObject *module, const char *a, const char *b,
-                        const char *c, const char *d, const char *e,
-                        const char *f, Py_ssize_t f_length, const char *g,
-                        Py_ssize_t g_length, const char *h,
-                        Py_ssize_t h_length);
-
-static PyObject *
-test_str_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    const char *a = NULL;
-    const char *b = "ab";
-    const char *c = "cd";
-    const char *d = "cef";
-    const char *e = "gh";
-    const char *f = "ij";
-    Py_ssize_t f_length;
-    const char *g = "kl";
-    Py_ssize_t g_length;
-    const char *h = "mn";
-    Py_ssize_t h_length;
-
-    if (!_PyArg_ParseStack(args, nargs, "|sssyzy#s#z#:test_str_converter",
-        &a, &b, &c, &d, &e, &f, &f_length, &g, &g_length, &h, &h_length)) {
-        goto exit;
-    }
-    return_value = test_str_converter_impl(module, a, b, c, d, e, f, f_length, g, g_length, h, h_length);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_str_converter_impl(PyObject *module, const char *a, const char *b,
-                        const char *c, const char *d, const char *e,
-                        const char *f, Py_ssize_t f_length, const char *g,
-                        Py_ssize_t g_length, const char *h,
-                        Py_ssize_t h_length)
-/*[clinic end generated code: output=82cb06d5237ef062 input=8afe9da8185cd38c]*/
-
-
-/*[clinic input]
-test_str_converter_encoding
-
-    a: str(encoding="idna")
-    b: str(encoding="idna", accept={str})
-    c: str(encoding="idna", accept={bytes, bytearray, str})
-    d: str(encoding="idna", zeroes=True)
-    e: str(encoding="idna", accept={bytes, bytearray, str}, zeroes=True)
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_str_converter_encoding__doc__,
-"test_str_converter_encoding($module, a, b, c, d, e, /)\n"
-"--\n"
-"\n");
-
-#define TEST_STR_CONVERTER_ENCODING_METHODDEF    \
-    {"test_str_converter_encoding", _PyCFunction_CAST(test_str_converter_encoding), METH_FASTCALL, test_str_converter_encoding__doc__},
-
-static PyObject *
-test_str_converter_encoding_impl(PyObject *module, char *a, char *b, char *c,
-                                 char *d, Py_ssize_t d_length, char *e,
-                                 Py_ssize_t e_length);
-
-static PyObject *
-test_str_converter_encoding(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    char *a = NULL;
-    char *b = NULL;
-    char *c = NULL;
-    char *d = NULL;
-    Py_ssize_t d_length;
-    char *e = NULL;
-    Py_ssize_t e_length;
-
-    if (!_PyArg_ParseStack(args, nargs, "esesetes#et#:test_str_converter_encoding",
-        "idna", &a, "idna", &b, "idna", &c, "idna", &d, &d_length, "idna", &e, &e_length)) {
-        goto exit;
-    }
-    return_value = test_str_converter_encoding_impl(module, a, b, c, d, d_length, e, e_length);
-    /* Post parse cleanup for a */
-    PyMem_FREE(a);
-    /* Post parse cleanup for b */
-    PyMem_FREE(b);
-    /* Post parse cleanup for c */
-    PyMem_FREE(c);
-    /* Post parse cleanup for d */
-    PyMem_FREE(d);
-    /* Post parse cleanup for e */
-    PyMem_FREE(e);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_str_converter_encoding_impl(PyObject *module, char *a, char *b, char *c,
-                                 char *d, Py_ssize_t d_length, char *e,
-                                 Py_ssize_t e_length)
-/*[clinic end generated code: output=999c1deecfa15b0a input=eb4c38e1f898f402]*/
-
-
-/*[clinic input]
-test_Py_UNICODE_converter
-
-    a: Py_UNICODE
-    b: Py_UNICODE(accept={str})
-    c: Py_UNICODE(accept={str, NoneType})
-    d: Py_UNICODE(zeroes=True)
-    e: Py_UNICODE(accept={str, NoneType}, zeroes=True)
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_Py_UNICODE_converter__doc__,
-"test_Py_UNICODE_converter($module, a, b, c, d, e, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PY_UNICODE_CONVERTER_METHODDEF    \
-    {"test_Py_UNICODE_converter", _PyCFunction_CAST(test_Py_UNICODE_converter), METH_FASTCALL, test_Py_UNICODE_converter__doc__},
-
-static PyObject *
-test_Py_UNICODE_converter_impl(PyObject *module, const Py_UNICODE *a,
-                               const Py_UNICODE *b, const Py_UNICODE *c,
-                               const Py_UNICODE *d, Py_ssize_t d_length,
-                               const Py_UNICODE *e, Py_ssize_t e_length);
-
-static PyObject *
-test_Py_UNICODE_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    const Py_UNICODE *a = NULL;
-    const Py_UNICODE *b = NULL;
-    const Py_UNICODE *c = NULL;
-    const Py_UNICODE *d = NULL;
-    Py_ssize_t d_length;
-    const Py_UNICODE *e = NULL;
-    Py_ssize_t e_length;
-
-    if (!_PyArg_ParseStack(args, nargs, "O&O&O&u#Z#:test_Py_UNICODE_converter",
-        _PyUnicode_WideCharString_Converter, &a, _PyUnicode_WideCharString_Converter, &b, _PyUnicode_WideCharString_Opt_Converter, &c, &d, &d_length, &e, &e_length)) {
-        goto exit;
-    }
-    return_value = test_Py_UNICODE_converter_impl(module, a, b, c, d, d_length, e, e_length);
-
-exit:
-    /* Cleanup for a */
-    PyMem_Free((void *)a);
-    /* Cleanup for b */
-    PyMem_Free((void *)b);
-    /* Cleanup for c */
-    PyMem_Free((void *)c);
-
-    return return_value;
-}
-
-static PyObject *
-test_Py_UNICODE_converter_impl(PyObject *module, const Py_UNICODE *a,
-                               const Py_UNICODE *b, const Py_UNICODE *c,
-                               const Py_UNICODE *d, Py_ssize_t d_length,
-                               const Py_UNICODE *e, Py_ssize_t e_length)
-/*[clinic end generated code: output=9f34a249b3071fdd input=064a3b68ad7f04b0]*/
-
-
-/*[clinic input]
-test_Py_buffer_converter
-
-    a: Py_buffer
-    b: Py_buffer(accept={buffer})
-    c: Py_buffer(accept={str, buffer})
-    d: Py_buffer(accept={str, buffer, NoneType})
-    e: Py_buffer(accept={rwbuffer})
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_Py_buffer_converter__doc__,
-"test_Py_buffer_converter($module, a, b, c, d, e, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PY_BUFFER_CONVERTER_METHODDEF    \
-    {"test_Py_buffer_converter", _PyCFunction_CAST(test_Py_buffer_converter), METH_FASTCALL, test_Py_buffer_converter__doc__},
-
-static PyObject *
-test_Py_buffer_converter_impl(PyObject *module, Py_buffer *a, Py_buffer *b,
-                              Py_buffer *c, Py_buffer *d, Py_buffer *e);
-
-static PyObject *
-test_Py_buffer_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer a = {NULL, NULL};
-    Py_buffer b = {NULL, NULL};
-    Py_buffer c = {NULL, NULL};
-    Py_buffer d = {NULL, NULL};
-    Py_buffer e = {NULL, NULL};
-
-    if (!_PyArg_ParseStack(args, nargs, "y*y*s*z*w*:test_Py_buffer_converter",
-        &a, &b, &c, &d, &e)) {
-        goto exit;
-    }
-    return_value = test_Py_buffer_converter_impl(module, &a, &b, &c, &d, &e);
-
-exit:
-    /* Cleanup for a */
-    if (a.obj) {
-       PyBuffer_Release(&a);
-    }
-    /* Cleanup for b */
-    if (b.obj) {
-       PyBuffer_Release(&b);
-    }
-    /* Cleanup for c */
-    if (c.obj) {
-       PyBuffer_Release(&c);
-    }
-    /* Cleanup for d */
-    if (d.obj) {
-       PyBuffer_Release(&d);
-    }
-    /* Cleanup for e */
-    if (e.obj) {
-       PyBuffer_Release(&e);
-    }
-
-    return return_value;
-}
-
-static PyObject *
-test_Py_buffer_converter_impl(PyObject *module, Py_buffer *a, Py_buffer *b,
-                              Py_buffer *c, Py_buffer *d, Py_buffer *e)
-/*[clinic end generated code: output=a153b71b4f45f952 input=6a9da0f56f9525fd]*/
-
-
-/*[clinic input]
-test_keywords
-
-    a: object
-    b: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_keywords__doc__,
-"test_keywords($module, /, a, b)\n"
-"--\n"
-"\n");
-
-#define TEST_KEYWORDS_METHODDEF    \
-    {"test_keywords", _PyCFunction_CAST(test_keywords), METH_FASTCALL|METH_KEYWORDS, test_keywords__doc__},
-
-static PyObject *
-test_keywords_impl(PyObject *module, PyObject *a, PyObject *b);
-
-static PyObject *
-test_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", "b", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_keywords",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
-    PyObject *a;
-    PyObject *b;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    return_value = test_keywords_impl(module, a, b);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=73d46a9ae3320f96 input=0d3484844749c05b]*/
-
-
-/*[clinic input]
-test_keywords_kwonly
-
-    a: object
-    *
-    b: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_keywords_kwonly__doc__,
-"test_keywords_kwonly($module, /, a, *, b)\n"
-"--\n"
-"\n");
-
-#define TEST_KEYWORDS_KWONLY_METHODDEF    \
-    {"test_keywords_kwonly", _PyCFunction_CAST(test_keywords_kwonly), METH_FASTCALL|METH_KEYWORDS, test_keywords_kwonly__doc__},
-
-static PyObject *
-test_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b);
-
-static PyObject *
-test_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", "b", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_keywords_kwonly",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
-    PyObject *a;
-    PyObject *b;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    return_value = test_keywords_kwonly_impl(module, a, b);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=c9f02a41f425897d input=384adc78bfa0bff7]*/
-
-
-/*[clinic input]
-test_keywords_opt
-
-    a: object
-    b: object = None
-    c: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_keywords_opt__doc__,
-"test_keywords_opt($module, /, a, b=None, c=None)\n"
-"--\n"
-"\n");
-
-#define TEST_KEYWORDS_OPT_METHODDEF    \
-    {"test_keywords_opt", _PyCFunction_CAST(test_keywords_opt), METH_FASTCALL|METH_KEYWORDS, test_keywords_opt__doc__},
-
-static PyObject *
-test_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                       PyObject *c);
-
-static PyObject *
-test_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", "b", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_keywords_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[1]) {
-        b = args[1];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-    c = args[2];
-skip_optional_pos:
-    return_value = test_keywords_opt_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                       PyObject *c)
-/*[clinic end generated code: output=b35d4e66f7283e46 input=eda7964f784f4607]*/
-
-
-/*[clinic input]
-test_keywords_opt_kwonly
-
-    a: object
-    b: object = None
-    *
-    c: object = None
-    d: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_keywords_opt_kwonly__doc__,
-"test_keywords_opt_kwonly($module, /, a, b=None, *, c=None, d=None)\n"
-"--\n"
-"\n");
-
-#define TEST_KEYWORDS_OPT_KWONLY_METHODDEF    \
-    {"test_keywords_opt_kwonly", _PyCFunction_CAST(test_keywords_opt_kwonly), METH_FASTCALL|METH_KEYWORDS, test_keywords_opt_kwonly__doc__},
-
-static PyObject *
-test_keywords_opt_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
-                              PyObject *c, PyObject *d);
-
-static PyObject *
-test_keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 4
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_keywords_opt_kwonly",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[4];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[1]) {
-        b = args[1];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-skip_optional_pos:
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    d = args[3];
-skip_optional_kwonly:
-    return_value = test_keywords_opt_kwonly_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_keywords_opt_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
-                              PyObject *c, PyObject *d)
-/*[clinic end generated code: output=ede7e6e65106bf2b input=209387a4815e5082]*/
-
-
-/*[clinic input]
-test_keywords_kwonly_opt
-
-    a: object
-    *
-    b: object = None
-    c: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_keywords_kwonly_opt__doc__,
-"test_keywords_kwonly_opt($module, /, a, *, b=None, c=None)\n"
-"--\n"
-"\n");
-
-#define TEST_KEYWORDS_KWONLY_OPT_METHODDEF    \
-    {"test_keywords_kwonly_opt", _PyCFunction_CAST(test_keywords_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_keywords_kwonly_opt__doc__},
-
-static PyObject *
-test_keywords_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                              PyObject *c);
-
-static PyObject *
-test_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", "b", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_keywords_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[1]) {
-        b = args[1];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    c = args[2];
-skip_optional_kwonly:
-    return_value = test_keywords_kwonly_opt_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_keywords_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                              PyObject *c)
-/*[clinic end generated code: output=36d4df939a4c3eef input=18393cc64fa000f4]*/
-
-
-/*[clinic input]
-test_posonly_keywords
-
-    a: object
-    /
-    b: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords__doc__,
-"test_posonly_keywords($module, a, /, b)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_METHODDEF    \
-    {"test_posonly_keywords", _PyCFunction_CAST(test_posonly_keywords), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords__doc__},
-
-static PyObject *
-test_posonly_keywords_impl(PyObject *module, PyObject *a, PyObject *b);
-
-static PyObject *
-test_posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
-    PyObject *a;
-    PyObject *b;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    return_value = test_posonly_keywords_impl(module, a, b);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=4835f4b6cf386c28 input=1767b0ebdf06060e]*/
-
-
-/*[clinic input]
-test_posonly_kwonly
-
-    a: object
-    /
-    *
-    c: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_kwonly__doc__,
-"test_posonly_kwonly($module, a, /, *, c)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KWONLY_METHODDEF    \
-    {"test_posonly_kwonly", _PyCFunction_CAST(test_posonly_kwonly), METH_FASTCALL|METH_KEYWORDS, test_posonly_kwonly__doc__},
-
-static PyObject *
-test_posonly_kwonly_impl(PyObject *module, PyObject *a, PyObject *c);
-
-static PyObject *
-test_posonly_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_kwonly",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
-    PyObject *a;
-    PyObject *c;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    c = args[1];
-    return_value = test_posonly_kwonly_impl(module, a, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_kwonly_impl(PyObject *module, PyObject *a, PyObject *c)
-/*[clinic end generated code: output=2570ea156a8d3cb5 input=9042f2818f664839]*/
-
-
-/*[clinic input]
-test_posonly_keywords_kwonly
-
-    a: object
-    /
-    b: object
-    *
-    c: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_kwonly__doc__,
-"test_posonly_keywords_kwonly($module, a, /, b, *, c)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_KWONLY_METHODDEF    \
-    {"test_posonly_keywords_kwonly", _PyCFunction_CAST(test_posonly_keywords_kwonly), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_kwonly__doc__},
-
-static PyObject *
-test_posonly_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
-                                  PyObject *c);
-
-static PyObject *
-test_posonly_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_kwonly",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    PyObject *a;
-    PyObject *b;
-    PyObject *c;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    c = args[2];
-    return_value = test_posonly_keywords_kwonly_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
-                                  PyObject *c)
-/*[clinic end generated code: output=aaa0e6b5ce02900d input=29546ebdca492fea]*/
-
-
-/*[clinic input]
-test_posonly_keywords_opt
-
-    a: object
-    /
-    b: object
-    c: object = None
-    d: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_opt__doc__,
-"test_posonly_keywords_opt($module, a, /, b, c=None, d=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_OPT_METHODDEF    \
-    {"test_posonly_keywords_opt", _PyCFunction_CAST(test_posonly_keywords_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt__doc__},
-
-static PyObject *
-test_posonly_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                               PyObject *c, PyObject *d);
-
-static PyObject *
-test_posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[4];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 4, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-    d = args[3];
-skip_optional_pos:
-    return_value = test_posonly_keywords_opt_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                               PyObject *c, PyObject *d)
-/*[clinic end generated code: output=1d9f2d8420d0a85f input=cdf5a9625e554e9b]*/
-
-
-/*[clinic input]
-test_posonly_keywords_opt2
-
-    a: object
-    /
-    b: object = None
-    c: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_opt2__doc__,
-"test_posonly_keywords_opt2($module, a, /, b=None, c=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_OPT2_METHODDEF    \
-    {"test_posonly_keywords_opt2", _PyCFunction_CAST(test_posonly_keywords_opt2), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt2__doc__},
-
-static PyObject *
-test_posonly_keywords_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
-                                PyObject *c);
-
-static PyObject *
-test_posonly_keywords_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_opt2",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[1]) {
-        b = args[1];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-    c = args[2];
-skip_optional_pos:
-    return_value = test_posonly_keywords_opt2_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
-                                PyObject *c)
-/*[clinic end generated code: output=a83caa0505b296cf input=1581299d21d16f14]*/
-
-
-/*[clinic input]
-test_posonly_opt_keywords_opt
-
-    a: object
-    b: object = None
-    /
-    c: object = None
-    d: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_opt_keywords_opt__doc__,
-"test_posonly_opt_keywords_opt($module, a, b=None, /, c=None, d=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_OPT_KEYWORDS_OPT_METHODDEF    \
-    {"test_posonly_opt_keywords_opt", _PyCFunction_CAST(test_posonly_opt_keywords_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_opt_keywords_opt__doc__},
-
-static PyObject *
-test_posonly_opt_keywords_opt_impl(PyObject *module, PyObject *a,
-                                   PyObject *b, PyObject *c, PyObject *d);
-
-static PyObject *
-test_posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "", "c", "d", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_opt_keywords_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[4];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 4, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (nargs < 2) {
-        goto skip_optional_posonly;
-    }
-    noptargs--;
-    b = args[1];
-skip_optional_posonly:
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-    d = args[3];
-skip_optional_pos:
-    return_value = test_posonly_opt_keywords_opt_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_opt_keywords_opt_impl(PyObject *module, PyObject *a,
-                                   PyObject *b, PyObject *c, PyObject *d)
-/*[clinic end generated code: output=0b24fba3dc04d26b input=408798ec3d42949f]*/
-
-
-/*[clinic input]
-test_posonly_kwonly_opt
-
-    a: object
-    /
-    *
-    b: object
-    c: object = None
-    d: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_kwonly_opt__doc__,
-"test_posonly_kwonly_opt($module, a, /, *, b, c=None, d=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KWONLY_OPT_METHODDEF    \
-    {"test_posonly_kwonly_opt", _PyCFunction_CAST(test_posonly_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_kwonly_opt__doc__},
-
-static PyObject *
-test_posonly_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                             PyObject *c, PyObject *d);
-
-static PyObject *
-test_posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[4];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    d = args[3];
-skip_optional_kwonly:
-    return_value = test_posonly_kwonly_opt_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                             PyObject *c, PyObject *d)
-/*[clinic end generated code: output=592b217bca2f7bcc input=8d8e5643bbbc2309]*/
-
-
-/*[clinic input]
-test_posonly_kwonly_opt2
-
-    a: object
-    /
-    *
-    b: object = None
-    c: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_kwonly_opt2__doc__,
-"test_posonly_kwonly_opt2($module, a, /, *, b=None, c=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KWONLY_OPT2_METHODDEF    \
-    {"test_posonly_kwonly_opt2", _PyCFunction_CAST(test_posonly_kwonly_opt2), METH_FASTCALL|METH_KEYWORDS, test_posonly_kwonly_opt2__doc__},
-
-static PyObject *
-test_posonly_kwonly_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
-                              PyObject *c);
-
-static PyObject *
-test_posonly_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_kwonly_opt2",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[1]) {
-        b = args[1];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    c = args[2];
-skip_optional_kwonly:
-    return_value = test_posonly_kwonly_opt2_impl(module, a, b, c);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_kwonly_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
-                              PyObject *c)
-/*[clinic end generated code: output=b8b00420826bc11f input=f7e5eed94f75fff0]*/
-
-
-/*[clinic input]
-test_posonly_opt_kwonly_opt
-
-    a: object
-    b: object = None
-    /
-    *
-    c: object = None
-    d: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_opt_kwonly_opt__doc__,
-"test_posonly_opt_kwonly_opt($module, a, b=None, /, *, c=None, d=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_OPT_KWONLY_OPT_METHODDEF    \
-    {"test_posonly_opt_kwonly_opt", _PyCFunction_CAST(test_posonly_opt_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_opt_kwonly_opt__doc__},
-
-static PyObject *
-test_posonly_opt_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                                 PyObject *c, PyObject *d);
-
-static PyObject *
-test_posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "", "c", "d", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_opt_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[4];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (nargs < 2) {
-        goto skip_optional_posonly;
-    }
-    noptargs--;
-    b = args[1];
-skip_optional_posonly:
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    d = args[3];
-skip_optional_kwonly:
-    return_value = test_posonly_opt_kwonly_opt_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_opt_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
-                                 PyObject *c, PyObject *d)
-/*[clinic end generated code: output=3b9ee879ebee285a input=1e557dc979d120fd]*/
-
-
-/*[clinic input]
-test_posonly_keywords_kwonly_opt
-
-    a: object
-    /
-    b: object
-    *
-    c: object
-    d: object = None
-    e: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_kwonly_opt__doc__,
-"test_posonly_keywords_kwonly_opt($module, a, /, b, *, c, d=None, e=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_KWONLY_OPT_METHODDEF    \
-    {"test_posonly_keywords_kwonly_opt", _PyCFunction_CAST(test_posonly_keywords_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_kwonly_opt__doc__},
-
-static PyObject *
-test_posonly_keywords_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                      PyObject *b, PyObject *c, PyObject *d,
-                                      PyObject *e);
-
-static PyObject *
-test_posonly_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 4
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", "d", "e", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[5];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c;
-    PyObject *d = Py_None;
-    PyObject *e = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    c = args[2];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[3]) {
-        d = args[3];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    e = args[4];
-skip_optional_kwonly:
-    return_value = test_posonly_keywords_kwonly_opt_impl(module, a, b, c, d, e);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                      PyObject *b, PyObject *c, PyObject *d,
-                                      PyObject *e)
-/*[clinic end generated code: output=d380f84f81cc0e45 input=c3884a4f956fdc89]*/
-
-
-/*[clinic input]
-test_posonly_keywords_kwonly_opt2
-
-    a: object
-    /
-    b: object
-    *
-    c: object = None
-    d: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_kwonly_opt2__doc__,
-"test_posonly_keywords_kwonly_opt2($module, a, /, b, *, c=None, d=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_KWONLY_OPT2_METHODDEF    \
-    {"test_posonly_keywords_kwonly_opt2", _PyCFunction_CAST(test_posonly_keywords_kwonly_opt2), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_kwonly_opt2__doc__},
-
-static PyObject *
-test_posonly_keywords_kwonly_opt2_impl(PyObject *module, PyObject *a,
-                                       PyObject *b, PyObject *c, PyObject *d);
-
-static PyObject *
-test_posonly_keywords_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_kwonly_opt2",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[4];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    d = args[3];
-skip_optional_kwonly:
-    return_value = test_posonly_keywords_kwonly_opt2_impl(module, a, b, c, d);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_kwonly_opt2_impl(PyObject *module, PyObject *a,
-                                       PyObject *b, PyObject *c, PyObject *d)
-/*[clinic end generated code: output=ee629e962cb06992 input=68d01d7c0f6dafb0]*/
-
-
-/*[clinic input]
-test_posonly_keywords_opt_kwonly_opt
-
-    a: object
-    /
-    b: object
-    c: object = None
-    *
-    d: object = None
-    e: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_opt_kwonly_opt__doc__,
-"test_posonly_keywords_opt_kwonly_opt($module, a, /, b, c=None, *,\n"
-"                                     d=None, e=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_OPT_KWONLY_OPT_METHODDEF    \
-    {"test_posonly_keywords_opt_kwonly_opt", _PyCFunction_CAST(test_posonly_keywords_opt_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt_kwonly_opt__doc__},
-
-static PyObject *
-test_posonly_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                          PyObject *b, PyObject *c,
-                                          PyObject *d, PyObject *e);
-
-static PyObject *
-test_posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 4
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", "d", "e", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_opt_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[5];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    PyObject *a;
-    PyObject *b;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-    PyObject *e = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 3, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    b = args[1];
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-skip_optional_pos:
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[3]) {
-        d = args[3];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    e = args[4];
-skip_optional_kwonly:
-    return_value = test_posonly_keywords_opt_kwonly_opt_impl(module, a, b, c, d, e);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                          PyObject *b, PyObject *c,
-                                          PyObject *d, PyObject *e)
-/*[clinic end generated code: output=a2721babb42ecfd1 input=d0883d45876f186c]*/
-
-
-/*[clinic input]
-test_posonly_keywords_opt2_kwonly_opt
-
-    a: object
-    /
-    b: object = None
-    c: object = None
-    *
-    d: object = None
-    e: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_keywords_opt2_kwonly_opt__doc__,
-"test_posonly_keywords_opt2_kwonly_opt($module, a, /, b=None, c=None, *,\n"
-"                                      d=None, e=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_KEYWORDS_OPT2_KWONLY_OPT_METHODDEF    \
-    {"test_posonly_keywords_opt2_kwonly_opt", _PyCFunction_CAST(test_posonly_keywords_opt2_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt2_kwonly_opt__doc__},
-
-static PyObject *
-test_posonly_keywords_opt2_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                           PyObject *b, PyObject *c,
-                                           PyObject *d, PyObject *e);
-
-static PyObject *
-test_posonly_keywords_opt2_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 4
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "b", "c", "d", "e", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_keywords_opt2_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[5];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-    PyObject *e = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[1]) {
-        b = args[1];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-skip_optional_pos:
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[3]) {
-        d = args[3];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    e = args[4];
-skip_optional_kwonly:
-    return_value = test_posonly_keywords_opt2_kwonly_opt_impl(module, a, b, c, d, e);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_keywords_opt2_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                           PyObject *b, PyObject *c,
-                                           PyObject *d, PyObject *e)
-/*[clinic end generated code: output=0626203eedb6e7e8 input=c95e2e1ec93035ad]*/
-
-
-/*[clinic input]
-test_posonly_opt_keywords_opt_kwonly_opt
-
-    a: object
-    b: object = None
-    /
-    c: object = None
-    d: object = None
-    *
-    e: object = None
-    f: object = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_posonly_opt_keywords_opt_kwonly_opt__doc__,
-"test_posonly_opt_keywords_opt_kwonly_opt($module, a, b=None, /, c=None,\n"
-"                                         d=None, *, e=None, f=None)\n"
-"--\n"
-"\n");
-
-#define TEST_POSONLY_OPT_KEYWORDS_OPT_KWONLY_OPT_METHODDEF    \
-    {"test_posonly_opt_keywords_opt_kwonly_opt", _PyCFunction_CAST(test_posonly_opt_keywords_opt_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_opt_keywords_opt_kwonly_opt__doc__},
-
-static PyObject *
-test_posonly_opt_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                              PyObject *b, PyObject *c,
-                                              PyObject *d, PyObject *e,
-                                              PyObject *f);
-
-static PyObject *
-test_posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 4
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"", "", "c", "d", "e", "f", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_posonly_opt_keywords_opt_kwonly_opt",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[6];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *b = Py_None;
-    PyObject *c = Py_None;
-    PyObject *d = Py_None;
-    PyObject *e = Py_None;
-    PyObject *f = Py_None;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 4, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    if (nargs < 2) {
-        goto skip_optional_posonly;
-    }
-    noptargs--;
-    b = args[1];
-skip_optional_posonly:
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    if (args[2]) {
-        c = args[2];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-    if (args[3]) {
-        d = args[3];
-        if (!--noptargs) {
-            goto skip_optional_pos;
-        }
-    }
-skip_optional_pos:
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[4]) {
-        e = args[4];
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    f = args[5];
-skip_optional_kwonly:
-    return_value = test_posonly_opt_keywords_opt_kwonly_opt_impl(module, a, b, c, d, e, f);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_posonly_opt_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
-                                              PyObject *b, PyObject *c,
-                                              PyObject *d, PyObject *e,
-                                              PyObject *f)
-/*[clinic end generated code: output=07d8acc04558a5a0 input=9914857713c5bbf8]*/
-
-/*[clinic input]
-test_keyword_only_parameter
-
-
-    *
-    co_lnotab: PyBytesObject(c_default="(PyBytesObject *)self->co_lnotab") = None
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_keyword_only_parameter__doc__,
-"test_keyword_only_parameter($module, /, *, co_lnotab=None)\n"
-"--\n"
-"\n");
-
-#define TEST_KEYWORD_ONLY_PARAMETER_METHODDEF    \
-    {"test_keyword_only_parameter", _PyCFunction_CAST(test_keyword_only_parameter), METH_FASTCALL|METH_KEYWORDS, test_keyword_only_parameter__doc__},
-
-static PyObject *
-test_keyword_only_parameter_impl(PyObject *module, PyBytesObject *co_lnotab);
-
-static PyObject *
-test_keyword_only_parameter(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(co_lnotab), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"co_lnotab", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_keyword_only_parameter",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[1];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
-    PyBytesObject *co_lnotab = (PyBytesObject *)self->co_lnotab;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 0, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (!PyBytes_Check(args[0])) {
-        _PyArg_BadArgument("test_keyword_only_parameter", "argument 'co_lnotab'", "bytes", args[0]);
-        goto exit;
-    }
-    co_lnotab = (PyBytesObject *)args[0];
-skip_optional_kwonly:
-    return_value = test_keyword_only_parameter_impl(module, co_lnotab);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_keyword_only_parameter_impl(PyObject *module, PyBytesObject *co_lnotab)
-/*[clinic end generated code: output=b12fe2e515a62603 input=303df5046c7e37a3]*/
-
-
-/*[clinic input]
-output push
-output preset buffer
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=5bff3376ee0df0b5]*/
-
-#ifdef CONDITION_A
-/*[clinic input]
-test_preprocessor_guarded_condition_a
-[clinic start generated code]*/
-
-static PyObject *
-test_preprocessor_guarded_condition_a_impl(PyObject *module)
-/*[clinic end generated code: output=ad012af18085add6 input=8edb8706a98cda7e]*/
-#elif CONDITION_B
-/*[clinic input]
-test_preprocessor_guarded_elif_condition_b
-[clinic start generated code]*/
-
-static PyObject *
-test_preprocessor_guarded_elif_condition_b_impl(PyObject *module)
-/*[clinic end generated code: output=615f2dee82b138d1 input=53777cebbf7fee32]*/
-#else
-/*[clinic input]
-test_preprocessor_guarded_else
-[clinic start generated code]*/
-
-static PyObject *
-test_preprocessor_guarded_else_impl(PyObject *module)
-/*[clinic end generated code: output=13af7670aac51b12 input=6657ab31d74c29fc]*/
-#endif
-
-/*[clinic input]
-dump buffer
-output pop
-[clinic start generated code]*/
-
-#if defined(CONDITION_A)
-
-PyDoc_STRVAR(test_preprocessor_guarded_condition_a__doc__,
-"test_preprocessor_guarded_condition_a($module, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF    \
-    {"test_preprocessor_guarded_condition_a", (PyCFunction)test_preprocessor_guarded_condition_a, METH_NOARGS, test_preprocessor_guarded_condition_a__doc__},
-
-static PyObject *
-test_preprocessor_guarded_condition_a(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    return test_preprocessor_guarded_condition_a_impl(module);
-}
-
-#endif /* defined(CONDITION_A) */
-
-#if !defined(CONDITION_A) && (CONDITION_B)
-
-PyDoc_STRVAR(test_preprocessor_guarded_elif_condition_b__doc__,
-"test_preprocessor_guarded_elif_condition_b($module, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF    \
-    {"test_preprocessor_guarded_elif_condition_b", (PyCFunction)test_preprocessor_guarded_elif_condition_b, METH_NOARGS, test_preprocessor_guarded_elif_condition_b__doc__},
-
-static PyObject *
-test_preprocessor_guarded_elif_condition_b(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    return test_preprocessor_guarded_elif_condition_b_impl(module);
-}
-
-#endif /* !defined(CONDITION_A) && (CONDITION_B) */
-
-#if !defined(CONDITION_A) && !(CONDITION_B)
-
-PyDoc_STRVAR(test_preprocessor_guarded_else__doc__,
-"test_preprocessor_guarded_else($module, /)\n"
-"--\n"
-"\n");
-
-#define TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF    \
-    {"test_preprocessor_guarded_else", (PyCFunction)test_preprocessor_guarded_else, METH_NOARGS, test_preprocessor_guarded_else__doc__},
-
-static PyObject *
-test_preprocessor_guarded_else(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    return test_preprocessor_guarded_else_impl(module);
-}
-
-#endif /* !defined(CONDITION_A) && !(CONDITION_B) */
-
-#ifndef TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF
-    #define TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF
-#endif /* !defined(TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF) */
-
-#ifndef TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF
-    #define TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF
-#endif /* !defined(TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF) */
-
-#ifndef TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF
-    #define TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF
-#endif /* !defined(TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF) */
-/*[clinic end generated code: output=3804bb18d454038c input=3fc80c9989d2f2e1]*/
-
-/*[clinic input]
-test_vararg_and_posonly
-
-
-    a: object
-    *args: object
-    /
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_vararg_and_posonly__doc__,
-"test_vararg_and_posonly($module, a, /, *args)\n"
-"--\n"
-"\n");
-
-#define TEST_VARARG_AND_POSONLY_METHODDEF    \
-    {"test_vararg_and_posonly", _PyCFunction_CAST(test_vararg_and_posonly), METH_FASTCALL, test_vararg_and_posonly__doc__},
-
-static PyObject *
-test_vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args);
-
-static PyObject *
-test_vararg_and_posonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *a;
-    PyObject *__clinic_args = NULL;
-
-    if (!_PyArg_CheckPositional("test_vararg_and_posonly", nargs, 1, PY_SSIZE_T_MAX)) {
-        goto exit;
-    }
-    a = args[0];
-    __clinic_args = PyTuple_New(nargs - 1);
-    if (!__clinic_args) {
-        goto exit;
-    }
-    for (Py_ssize_t i = 0; i < nargs - 1; ++i) {
-        PyTuple_SET_ITEM(__clinic_args, i, Py_NewRef(args[1 + i]));
-    }
-    return_value = test_vararg_and_posonly_impl(module, a, __clinic_args);
-
-exit:
-    Py_XDECREF(__clinic_args);
-    return return_value;
-}
-
-static PyObject *
-test_vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=79b75dc07decc8d6 input=08dc2bf7afbf1613]*/
-
-/*[clinic input]
-test_vararg
-
-
-    a: object
-    *args: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_vararg__doc__,
-"test_vararg($module, /, a, *args)\n"
-"--\n"
-"\n");
-
-#define TEST_VARARG_METHODDEF    \
-    {"test_vararg", _PyCFunction_CAST(test_vararg), METH_FASTCALL|METH_KEYWORDS, test_vararg__doc__},
-
-static PyObject *
-test_vararg_impl(PyObject *module, PyObject *a, PyObject *args);
-
-static PyObject *
-test_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_vararg",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
-    PyObject *a;
-    PyObject *__clinic_args = NULL;
-
-    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    __clinic_args = args[1];
-    return_value = test_vararg_impl(module, a, __clinic_args);
-
-exit:
-    Py_XDECREF(__clinic_args);
-    return return_value;
-}
-
-static PyObject *
-test_vararg_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=880365c61ae205d7 input=81d33815ad1bae6e]*/
-
-/*[clinic input]
-test_vararg_with_default
-
-
-    a: object
-    *args: object
-    b: bool = False
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_vararg_with_default__doc__,
-"test_vararg_with_default($module, /, a, *args, b=False)\n"
-"--\n"
-"\n");
-
-#define TEST_VARARG_WITH_DEFAULT_METHODDEF    \
-    {"test_vararg_with_default", _PyCFunction_CAST(test_vararg_with_default), METH_FASTCALL|METH_KEYWORDS, test_vararg_with_default__doc__},
-
-static PyObject *
-test_vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
-                              int b);
-
-static PyObject *
-test_vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"a", "b", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_vararg_with_default",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    PyObject *a;
-    PyObject *__clinic_args = NULL;
-    int b = 0;
-
-    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, 1, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    a = args[0];
-    __clinic_args = args[1];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    b = PyObject_IsTrue(args[2]);
-    if (b < 0) {
-        goto exit;
-    }
-skip_optional_kwonly:
-    return_value = test_vararg_with_default_impl(module, a, __clinic_args, b);
-
-exit:
-    Py_XDECREF(__clinic_args);
-    return return_value;
-}
-
-static PyObject *
-test_vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
-                              int b)
-/*[clinic end generated code: output=291e9a5a09831128 input=6e110b54acd9b22d]*/
-
-/*[clinic input]
-test_vararg_with_only_defaults
-
-
-    *args: object
-    b: bool = False
-    c: object = ' '
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_vararg_with_only_defaults__doc__,
-"test_vararg_with_only_defaults($module, /, *args, b=False, c=\' \')\n"
-"--\n"
-"\n");
-
-#define TEST_VARARG_WITH_ONLY_DEFAULTS_METHODDEF    \
-    {"test_vararg_with_only_defaults", _PyCFunction_CAST(test_vararg_with_only_defaults), METH_FASTCALL|METH_KEYWORDS, test_vararg_with_only_defaults__doc__},
-
-static PyObject *
-test_vararg_with_only_defaults_impl(PyObject *module, PyObject *args, int b,
-                                    PyObject *c);
-
-static PyObject *
-test_vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"b", "c", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_vararg_with_only_defaults",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
-    PyObject *__clinic_args = NULL;
-    int b = 0;
-    PyObject *c = " ";
-
-    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 0, 0, 0, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    __clinic_args = args[0];
-    if (!noptargs) {
-        goto skip_optional_kwonly;
-    }
-    if (args[1]) {
-        b = PyObject_IsTrue(args[1]);
-        if (b < 0) {
-            goto exit;
-        }
-        if (!--noptargs) {
-            goto skip_optional_kwonly;
-        }
-    }
-    c = args[2];
-skip_optional_kwonly:
-    return_value = test_vararg_with_only_defaults_impl(module, __clinic_args, b, c);
-
-exit:
-    Py_XDECREF(__clinic_args);
-    return return_value;
-}
-
-static PyObject *
-test_vararg_with_only_defaults_impl(PyObject *module, PyObject *args, int b,
-                                    PyObject *c)
-/*[clinic end generated code: output=dd21b28f0db26a4b input=fa56a709a035666e]*/
-
-/*[clinic input]
-test_paramname_module
-
-    module as mod: object
-[clinic start generated code]*/
-
-PyDoc_STRVAR(test_paramname_module__doc__,
-"test_paramname_module($module, /, module)\n"
-"--\n"
-"\n");
-
-#define TEST_PARAMNAME_MODULE_METHODDEF    \
-    {"test_paramname_module", _PyCFunction_CAST(test_paramname_module), METH_FASTCALL|METH_KEYWORDS, test_paramname_module__doc__},
-
-static PyObject *
-test_paramname_module_impl(PyObject *module, PyObject *mod);
-
-static PyObject *
-test_paramname_module(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(module), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"module", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "test_paramname_module",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[1];
-    PyObject *mod;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    mod = args[0];
-    return_value = test_paramname_module_impl(module, mod);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-test_paramname_module_impl(PyObject *module, PyObject *mod)
-/*[clinic end generated code: output=4a2a849ecbcc8b53 input=afefe259667f13ba]*/
-
-/*[clinic input]
-mangle1
-
-    args: object
-    kwnames: object
-    return_value: object
-    _keywords: object
-    _parser: object
-    argsbuf: object
-    fastargs: object
-    nargs: object
-    noptargs: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(mangle1__doc__,
-"mangle1($module, /, args, kwnames, return_value, _keywords, _parser,\n"
-"        argsbuf, fastargs, nargs, noptargs)\n"
-"--\n"
-"\n");
-
-#define MANGLE1_METHODDEF    \
-    {"mangle1", _PyCFunction_CAST(mangle1), METH_FASTCALL|METH_KEYWORDS, mangle1__doc__},
-
-static PyObject *
-mangle1_impl(PyObject *module, PyObject *args, PyObject *kwnames,
-             PyObject *return_value, PyObject *_keywords, PyObject *_parser,
-             PyObject *argsbuf, PyObject *fastargs, PyObject *nargs,
-             PyObject *noptargs);
-
-static PyObject *
-mangle1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 9
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(args), &_Py_ID(kwnames), &_Py_ID(return_value), &_Py_ID(_keywords), &_Py_ID(_parser), &_Py_ID(argsbuf), &_Py_ID(fastargs), &_Py_ID(nargs), &_Py_ID(noptargs), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"args", "kwnames", "return_value", "_keywords", "_parser", "argsbuf", "fastargs", "nargs", "noptargs", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "mangle1",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[9];
-    PyObject *__clinic_args;
-    PyObject *__clinic_kwnames;
-    PyObject *__clinic_return_value;
-    PyObject *__clinic__keywords;
-    PyObject *__clinic__parser;
-    PyObject *__clinic_argsbuf;
-    PyObject *__clinic_fastargs;
-    PyObject *__clinic_nargs;
-    PyObject *__clinic_noptargs;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 9, 9, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    __clinic_args = args[0];
-    __clinic_kwnames = args[1];
-    __clinic_return_value = args[2];
-    __clinic__keywords = args[3];
-    __clinic__parser = args[4];
-    __clinic_argsbuf = args[5];
-    __clinic_fastargs = args[6];
-    __clinic_nargs = args[7];
-    __clinic_noptargs = args[8];
-    return_value = mangle1_impl(module, __clinic_args, __clinic_kwnames, __clinic_return_value, __clinic__keywords, __clinic__parser, __clinic_argsbuf, __clinic_fastargs, __clinic_nargs, __clinic_noptargs);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-mangle1_impl(PyObject *module, PyObject *args, PyObject *kwnames,
-             PyObject *return_value, PyObject *_keywords, PyObject *_parser,
-             PyObject *argsbuf, PyObject *fastargs, PyObject *nargs,
-             PyObject *noptargs)
-/*[clinic end generated code: output=083e5076be9987c3 input=a3ed51bdedf8a3c7]*/
-
-/*[clinic input]
-mangle2
-
-    args: object
-    kwargs: object
-    return_value: object
-
-[clinic start generated code]*/
-
-PyDoc_STRVAR(mangle2__doc__,
-"mangle2($module, /, args, kwargs, return_value)\n"
-"--\n"
-"\n");
-
-#define MANGLE2_METHODDEF    \
-    {"mangle2", _PyCFunction_CAST(mangle2), METH_FASTCALL|METH_KEYWORDS, mangle2__doc__},
-
-static PyObject *
-mangle2_impl(PyObject *module, PyObject *args, PyObject *kwargs,
-             PyObject *return_value);
-
-static PyObject *
-mangle2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-{
-    PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(args), &_Py_ID(kwargs), &_Py_ID(return_value), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"args", "kwargs", "return_value", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "mangle2",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    PyObject *__clinic_args;
-    PyObject *__clinic_kwargs;
-    PyObject *__clinic_return_value;
-
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    __clinic_args = args[0];
-    __clinic_kwargs = args[1];
-    __clinic_return_value = args[2];
-    return_value = mangle2_impl(module, __clinic_args, __clinic_kwargs, __clinic_return_value);
-
-exit:
-    return return_value;
-}
-
-static PyObject *
-mangle2_impl(PyObject *module, PyObject *args, PyObject *kwargs,
-             PyObject *return_value)
-/*[clinic end generated code: output=2ebb62aaefe7590a input=391766fee51bad7a]*/
diff --git a/Lib/test/clinic.test.c b/Lib/test/clinic.test.c
new file mode 100644
index 00000000000000..ee4a4228fd28be
--- /dev/null
+++ b/Lib/test/clinic.test.c
@@ -0,0 +1,5735 @@
+/*[clinic input]
+output preset block
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=3c81ac2402d06a8b]*/
+
+/*[clinic input]
+module m
+class m.T "TestObj *" "TestType"
+class Test "TestObj *" "TestType"
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=f761b4d55cb179cf]*/
+
+/*[clinic input]
+test_object_converter
+
+    a: object
+    b: object(converter="PyUnicode_FSConverter")
+    c: object(subclass_of="&PyUnicode_Type")
+    d: object(type="PyUnicode_Object *")
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_object_converter__doc__,
+"test_object_converter($module, a, b, c, d, /)\n"
+"--\n"
+"\n");
+
+#define TEST_OBJECT_CONVERTER_METHODDEF    \
+    {"test_object_converter", _PyCFunction_CAST(test_object_converter), METH_FASTCALL, test_object_converter__doc__},
+
+static PyObject *
+test_object_converter_impl(PyObject *module, PyObject *a, PyObject *b,
+                           PyObject *c, PyUnicode_Object *d);
+
+static PyObject *
+test_object_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyUnicode_Object *d;
+
+    if (!_PyArg_CheckPositional("test_object_converter", nargs, 4, 4)) {
+        goto exit;
+    }
+    a = args[0];
+    if (!PyUnicode_FSConverter(args[1], &b)) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[2])) {
+        _PyArg_BadArgument("test_object_converter", "argument 3", "str", args[2]);
+        goto exit;
+    }
+    c = args[2];
+    d = (PyUnicode_Object *)args[3];
+    return_value = test_object_converter_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_object_converter_impl(PyObject *module, PyObject *a, PyObject *b,
+                           PyObject *c, PyUnicode_Object *d)
+/*[clinic end generated code: output=886f4f9b598726b6 input=005e6a8a711a869b]*/
+
+
+/*[clinic input]
+cloned = test_object_converter
+Check the clone feature.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(cloned__doc__,
+"cloned($module, a, b, c, d, /)\n"
+"--\n"
+"\n"
+"Check the clone feature.");
+
+#define CLONED_METHODDEF    \
+    {"cloned", _PyCFunction_CAST(cloned), METH_FASTCALL, cloned__doc__},
+
+static PyObject *
+cloned_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+            PyUnicode_Object *d);
+
+static PyObject *
+cloned(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyUnicode_Object *d;
+
+    if (!_PyArg_CheckPositional("cloned", nargs, 4, 4)) {
+        goto exit;
+    }
+    a = args[0];
+    if (!PyUnicode_FSConverter(args[1], &b)) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[2])) {
+        _PyArg_BadArgument("cloned", "argument 3", "str", args[2]);
+        goto exit;
+    }
+    c = args[2];
+    d = (PyUnicode_Object *)args[3];
+    return_value = cloned_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+cloned_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+            PyUnicode_Object *d)
+/*[clinic end generated code: output=026b483e27c38065 input=0543614019d6fcc7]*/
+
+
+/*[clinic input]
+test_object_converter_one_arg
+
+    a: object
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_object_converter_one_arg__doc__,
+"test_object_converter_one_arg($module, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_OBJECT_CONVERTER_ONE_ARG_METHODDEF    \
+    {"test_object_converter_one_arg", (PyCFunction)test_object_converter_one_arg, METH_O, test_object_converter_one_arg__doc__},
+
+static PyObject *
+test_object_converter_one_arg(PyObject *module, PyObject *a)
+/*[clinic end generated code: output=6da755f8502139df input=d635d92a421f1ca3]*/
+
+
+/*[clinic input]
+test_objects_converter
+
+    a: object
+    b: object = NULL
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_objects_converter__doc__,
+"test_objects_converter($module, a, b=<unrepresentable>, /)\n"
+"--\n"
+"\n");
+
+#define TEST_OBJECTS_CONVERTER_METHODDEF    \
+    {"test_objects_converter", _PyCFunction_CAST(test_objects_converter), METH_FASTCALL, test_objects_converter__doc__},
+
+static PyObject *
+test_objects_converter_impl(PyObject *module, PyObject *a, PyObject *b);
+
+static PyObject *
+test_objects_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *b = NULL;
+
+    if (!_PyArg_CheckPositional("test_objects_converter", nargs, 1, 2)) {
+        goto exit;
+    }
+    a = args[0];
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    b = args[1];
+skip_optional:
+    return_value = test_objects_converter_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_objects_converter_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=fc26328b79d46bb7 input=4cbb3d9edd2a36f3]*/
+
+
+/*[clinic input]
+test_object_converter_subclass_of
+
+    a: object(subclass_of="&PyLong_Type")
+    b: object(subclass_of="&PyTuple_Type")
+    c: object(subclass_of="&PyList_Type")
+    d: object(subclass_of="&PySet_Type")
+    e: object(subclass_of="&PyFrozenSet_Type")
+    f: object(subclass_of="&PyDict_Type")
+    g: object(subclass_of="&PyUnicode_Type")
+    h: object(subclass_of="&PyBytes_Type")
+    i: object(subclass_of="&PyByteArray_Type")
+    j: object(subclass_of="&MyType")
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_object_converter_subclass_of__doc__,
+"test_object_converter_subclass_of($module, a, b, c, d, e, f, g, h, i,\n"
+"                                  j, /)\n"
+"--\n"
+"\n");
+
+#define TEST_OBJECT_CONVERTER_SUBCLASS_OF_METHODDEF    \
+    {"test_object_converter_subclass_of", _PyCFunction_CAST(test_object_converter_subclass_of), METH_FASTCALL, test_object_converter_subclass_of__doc__},
+
+static PyObject *
+test_object_converter_subclass_of_impl(PyObject *module, PyObject *a,
+                                       PyObject *b, PyObject *c, PyObject *d,
+                                       PyObject *e, PyObject *f, PyObject *g,
+                                       PyObject *h, PyObject *i, PyObject *j);
+
+static PyObject *
+test_object_converter_subclass_of(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+    PyObject *e;
+    PyObject *f;
+    PyObject *g;
+    PyObject *h;
+    PyObject *i;
+    PyObject *j;
+
+    if (!_PyArg_CheckPositional("test_object_converter_subclass_of", nargs, 10, 10)) {
+        goto exit;
+    }
+    if (!PyLong_Check(args[0])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 1", "int", args[0]);
+        goto exit;
+    }
+    a = args[0];
+    if (!PyTuple_Check(args[1])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 2", "tuple", args[1]);
+        goto exit;
+    }
+    b = args[1];
+    if (!PyList_Check(args[2])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 3", "list", args[2]);
+        goto exit;
+    }
+    c = args[2];
+    if (!PySet_Check(args[3])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 4", "set", args[3]);
+        goto exit;
+    }
+    d = args[3];
+    if (!PyFrozenSet_Check(args[4])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 5", "frozenset", args[4]);
+        goto exit;
+    }
+    e = args[4];
+    if (!PyDict_Check(args[5])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 6", "dict", args[5]);
+        goto exit;
+    }
+    f = args[5];
+    if (!PyUnicode_Check(args[6])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 7", "str", args[6]);
+        goto exit;
+    }
+    g = args[6];
+    if (!PyBytes_Check(args[7])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 8", "bytes", args[7]);
+        goto exit;
+    }
+    h = args[7];
+    if (!PyByteArray_Check(args[8])) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 9", "bytearray", args[8]);
+        goto exit;
+    }
+    i = args[8];
+    if (!PyObject_TypeCheck(args[9], &MyType)) {
+        _PyArg_BadArgument("test_object_converter_subclass_of", "argument 10", (&MyType)->tp_name, args[9]);
+        goto exit;
+    }
+    j = args[9];
+    return_value = test_object_converter_subclass_of_impl(module, a, b, c, d, e, f, g, h, i, j);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_object_converter_subclass_of_impl(PyObject *module, PyObject *a,
+                                       PyObject *b, PyObject *c, PyObject *d,
+                                       PyObject *e, PyObject *f, PyObject *g,
+                                       PyObject *h, PyObject *i, PyObject *j)
+/*[clinic end generated code: output=e4b07c9a54479a40 input=31b06b772d5f983e]*/
+
+
+/*[clinic input]
+test_PyBytesObject_converter
+
+    a: PyBytesObject
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_PyBytesObject_converter__doc__,
+"test_PyBytesObject_converter($module, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PYBYTESOBJECT_CONVERTER_METHODDEF    \
+    {"test_PyBytesObject_converter", (PyCFunction)test_PyBytesObject_converter, METH_O, test_PyBytesObject_converter__doc__},
+
+static PyObject *
+test_PyBytesObject_converter_impl(PyObject *module, PyBytesObject *a);
+
+static PyObject *
+test_PyBytesObject_converter(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyBytesObject *a;
+
+    if (!PyBytes_Check(arg)) {
+        _PyArg_BadArgument("test_PyBytesObject_converter", "argument", "bytes", arg);
+        goto exit;
+    }
+    a = (PyBytesObject *)arg;
+    return_value = test_PyBytesObject_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_PyBytesObject_converter_impl(PyObject *module, PyBytesObject *a)
+/*[clinic end generated code: output=7539d628e6fceace input=12b10c7cb5750400]*/
+
+
+/*[clinic input]
+test_PyByteArrayObject_converter
+
+    a: PyByteArrayObject
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_PyByteArrayObject_converter__doc__,
+"test_PyByteArrayObject_converter($module, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PYBYTEARRAYOBJECT_CONVERTER_METHODDEF    \
+    {"test_PyByteArrayObject_converter", (PyCFunction)test_PyByteArrayObject_converter, METH_O, test_PyByteArrayObject_converter__doc__},
+
+static PyObject *
+test_PyByteArrayObject_converter_impl(PyObject *module, PyByteArrayObject *a);
+
+static PyObject *
+test_PyByteArrayObject_converter(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyByteArrayObject *a;
+
+    if (!PyByteArray_Check(arg)) {
+        _PyArg_BadArgument("test_PyByteArrayObject_converter", "argument", "bytearray", arg);
+        goto exit;
+    }
+    a = (PyByteArrayObject *)arg;
+    return_value = test_PyByteArrayObject_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_PyByteArrayObject_converter_impl(PyObject *module, PyByteArrayObject *a)
+/*[clinic end generated code: output=1245af9f5b3e355e input=5a657da535d194ae]*/
+
+
+/*[clinic input]
+test_unicode_converter
+
+    a: unicode
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_unicode_converter__doc__,
+"test_unicode_converter($module, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_UNICODE_CONVERTER_METHODDEF    \
+    {"test_unicode_converter", (PyCFunction)test_unicode_converter, METH_O, test_unicode_converter__doc__},
+
+static PyObject *
+test_unicode_converter_impl(PyObject *module, PyObject *a);
+
+static PyObject *
+test_unicode_converter(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("test_unicode_converter", "argument", "str", arg);
+        goto exit;
+    }
+    a = arg;
+    return_value = test_unicode_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_unicode_converter_impl(PyObject *module, PyObject *a)
+/*[clinic end generated code: output=8c1625cc272c1f3d input=aa33612df92aa9c5]*/
+
+
+/*[clinic input]
+test_bool_converter
+
+    a: bool = True
+    b: bool(accept={object}) = True
+    c: bool(accept={int}) = True
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_bool_converter__doc__,
+"test_bool_converter($module, a=True, b=True, c=True, /)\n"
+"--\n"
+"\n");
+
+#define TEST_BOOL_CONVERTER_METHODDEF    \
+    {"test_bool_converter", _PyCFunction_CAST(test_bool_converter), METH_FASTCALL, test_bool_converter__doc__},
+
+static PyObject *
+test_bool_converter_impl(PyObject *module, int a, int b, int c);
+
+static PyObject *
+test_bool_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int a = 1;
+    int b = 1;
+    int c = 1;
+
+    if (!_PyArg_CheckPositional("test_bool_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    a = PyObject_IsTrue(args[0]);
+    if (a < 0) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    b = PyObject_IsTrue(args[1]);
+    if (b < 0) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    c = PyLong_AsInt(args[2]);
+    if (c == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_bool_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_bool_converter_impl(PyObject *module, int a, int b, int c)
+/*[clinic end generated code: output=3190e46490de0644 input=939854fa9f248c60]*/
+
+
+/*[clinic input]
+test_char_converter
+
+    a: char = b'A'
+    b: char = b'\a'
+    c: char = b'\b'
+    d: char = b'\t'
+    e: char = b'\n'
+    f: char = b'\v'
+    g: char = b'\f'
+    h: char = b'\r'
+    i: char = b'"'
+    j: char = b"'"
+    k: char = b'?'
+    l: char = b'\\'
+    m: char = b'\000'
+    n: char = b'\377'
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_char_converter__doc__,
+"test_char_converter($module, a=b\'A\', b=b\'\\x07\', c=b\'\\x08\', d=b\'\\t\',\n"
+"                    e=b\'\\n\', f=b\'\\x0b\', g=b\'\\x0c\', h=b\'\\r\', i=b\'\"\',\n"
+"                    j=b\"\'\", k=b\'?\', l=b\'\\\\\', m=b\'\\x00\', n=b\'\\xff\', /)\n"
+"--\n"
+"\n");
+
+#define TEST_CHAR_CONVERTER_METHODDEF    \
+    {"test_char_converter", _PyCFunction_CAST(test_char_converter), METH_FASTCALL, test_char_converter__doc__},
+
+static PyObject *
+test_char_converter_impl(PyObject *module, char a, char b, char c, char d,
+                         char e, char f, char g, char h, char i, char j,
+                         char k, char l, char m, char n);
+
+static PyObject *
+test_char_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    char a = 'A';
+    char b = '\x07';
+    char c = '\x08';
+    char d = '\t';
+    char e = '\n';
+    char f = '\x0b';
+    char g = '\x0c';
+    char h = '\r';
+    char i = '"';
+    char j = '\'';
+    char k = '?';
+    char l = '\\';
+    char m = '\x00';
+    char n = '\xff';
+
+    if (!_PyArg_CheckPositional("test_char_converter", nargs, 0, 14)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[0]) && PyBytes_GET_SIZE(args[0]) == 1) {
+        a = PyBytes_AS_STRING(args[0])[0];
+    }
+    else if (PyByteArray_Check(args[0]) && PyByteArray_GET_SIZE(args[0]) == 1) {
+        a = PyByteArray_AS_STRING(args[0])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 1", "a byte string of length 1", args[0]);
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[1]) && PyBytes_GET_SIZE(args[1]) == 1) {
+        b = PyBytes_AS_STRING(args[1])[0];
+    }
+    else if (PyByteArray_Check(args[1]) && PyByteArray_GET_SIZE(args[1]) == 1) {
+        b = PyByteArray_AS_STRING(args[1])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 2", "a byte string of length 1", args[1]);
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[2]) && PyBytes_GET_SIZE(args[2]) == 1) {
+        c = PyBytes_AS_STRING(args[2])[0];
+    }
+    else if (PyByteArray_Check(args[2]) && PyByteArray_GET_SIZE(args[2]) == 1) {
+        c = PyByteArray_AS_STRING(args[2])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 3", "a byte string of length 1", args[2]);
+        goto exit;
+    }
+    if (nargs < 4) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[3]) && PyBytes_GET_SIZE(args[3]) == 1) {
+        d = PyBytes_AS_STRING(args[3])[0];
+    }
+    else if (PyByteArray_Check(args[3]) && PyByteArray_GET_SIZE(args[3]) == 1) {
+        d = PyByteArray_AS_STRING(args[3])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 4", "a byte string of length 1", args[3]);
+        goto exit;
+    }
+    if (nargs < 5) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[4]) && PyBytes_GET_SIZE(args[4]) == 1) {
+        e = PyBytes_AS_STRING(args[4])[0];
+    }
+    else if (PyByteArray_Check(args[4]) && PyByteArray_GET_SIZE(args[4]) == 1) {
+        e = PyByteArray_AS_STRING(args[4])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 5", "a byte string of length 1", args[4]);
+        goto exit;
+    }
+    if (nargs < 6) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[5]) && PyBytes_GET_SIZE(args[5]) == 1) {
+        f = PyBytes_AS_STRING(args[5])[0];
+    }
+    else if (PyByteArray_Check(args[5]) && PyByteArray_GET_SIZE(args[5]) == 1) {
+        f = PyByteArray_AS_STRING(args[5])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 6", "a byte string of length 1", args[5]);
+        goto exit;
+    }
+    if (nargs < 7) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[6]) && PyBytes_GET_SIZE(args[6]) == 1) {
+        g = PyBytes_AS_STRING(args[6])[0];
+    }
+    else if (PyByteArray_Check(args[6]) && PyByteArray_GET_SIZE(args[6]) == 1) {
+        g = PyByteArray_AS_STRING(args[6])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 7", "a byte string of length 1", args[6]);
+        goto exit;
+    }
+    if (nargs < 8) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[7]) && PyBytes_GET_SIZE(args[7]) == 1) {
+        h = PyBytes_AS_STRING(args[7])[0];
+    }
+    else if (PyByteArray_Check(args[7]) && PyByteArray_GET_SIZE(args[7]) == 1) {
+        h = PyByteArray_AS_STRING(args[7])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 8", "a byte string of length 1", args[7]);
+        goto exit;
+    }
+    if (nargs < 9) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[8]) && PyBytes_GET_SIZE(args[8]) == 1) {
+        i = PyBytes_AS_STRING(args[8])[0];
+    }
+    else if (PyByteArray_Check(args[8]) && PyByteArray_GET_SIZE(args[8]) == 1) {
+        i = PyByteArray_AS_STRING(args[8])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 9", "a byte string of length 1", args[8]);
+        goto exit;
+    }
+    if (nargs < 10) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[9]) && PyBytes_GET_SIZE(args[9]) == 1) {
+        j = PyBytes_AS_STRING(args[9])[0];
+    }
+    else if (PyByteArray_Check(args[9]) && PyByteArray_GET_SIZE(args[9]) == 1) {
+        j = PyByteArray_AS_STRING(args[9])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 10", "a byte string of length 1", args[9]);
+        goto exit;
+    }
+    if (nargs < 11) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[10]) && PyBytes_GET_SIZE(args[10]) == 1) {
+        k = PyBytes_AS_STRING(args[10])[0];
+    }
+    else if (PyByteArray_Check(args[10]) && PyByteArray_GET_SIZE(args[10]) == 1) {
+        k = PyByteArray_AS_STRING(args[10])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 11", "a byte string of length 1", args[10]);
+        goto exit;
+    }
+    if (nargs < 12) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[11]) && PyBytes_GET_SIZE(args[11]) == 1) {
+        l = PyBytes_AS_STRING(args[11])[0];
+    }
+    else if (PyByteArray_Check(args[11]) && PyByteArray_GET_SIZE(args[11]) == 1) {
+        l = PyByteArray_AS_STRING(args[11])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 12", "a byte string of length 1", args[11]);
+        goto exit;
+    }
+    if (nargs < 13) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[12]) && PyBytes_GET_SIZE(args[12]) == 1) {
+        m = PyBytes_AS_STRING(args[12])[0];
+    }
+    else if (PyByteArray_Check(args[12]) && PyByteArray_GET_SIZE(args[12]) == 1) {
+        m = PyByteArray_AS_STRING(args[12])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 13", "a byte string of length 1", args[12]);
+        goto exit;
+    }
+    if (nargs < 14) {
+        goto skip_optional;
+    }
+    if (PyBytes_Check(args[13]) && PyBytes_GET_SIZE(args[13]) == 1) {
+        n = PyBytes_AS_STRING(args[13])[0];
+    }
+    else if (PyByteArray_Check(args[13]) && PyByteArray_GET_SIZE(args[13]) == 1) {
+        n = PyByteArray_AS_STRING(args[13])[0];
+    }
+    else {
+        _PyArg_BadArgument("test_char_converter", "argument 14", "a byte string of length 1", args[13]);
+        goto exit;
+    }
+skip_optional:
+    return_value = test_char_converter_impl(module, a, b, c, d, e, f, g, h, i, j, k, l, m, n);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_char_converter_impl(PyObject *module, char a, char b, char c, char d,
+                         char e, char f, char g, char h, char i, char j,
+                         char k, char l, char m, char n)
+/*[clinic end generated code: output=98589f02422fe6b1 input=e42330417a44feac]*/
+
+
+/*[clinic input]
+test_unsigned_char_converter
+
+    a: unsigned_char = 12
+    b: unsigned_char(bitwise=False) = 34
+    c: unsigned_char(bitwise=True) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_unsigned_char_converter__doc__,
+"test_unsigned_char_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_UNSIGNED_CHAR_CONVERTER_METHODDEF    \
+    {"test_unsigned_char_converter", _PyCFunction_CAST(test_unsigned_char_converter), METH_FASTCALL, test_unsigned_char_converter__doc__},
+
+static PyObject *
+test_unsigned_char_converter_impl(PyObject *module, unsigned char a,
+                                  unsigned char b, unsigned char c);
+
+static PyObject *
+test_unsigned_char_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    unsigned char a = 12;
+    unsigned char b = 34;
+    unsigned char c = 56;
+
+    if (!_PyArg_CheckPositional("test_unsigned_char_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    {
+        long ival = PyLong_AsLong(args[0]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < 0) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "unsigned byte integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > UCHAR_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "unsigned byte integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            a = (unsigned char) ival;
+        }
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    {
+        long ival = PyLong_AsLong(args[1]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < 0) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "unsigned byte integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > UCHAR_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "unsigned byte integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            b = (unsigned char) ival;
+        }
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    {
+        unsigned long ival = PyLong_AsUnsignedLongMask(args[2]);
+        if (ival == (unsigned long)-1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else {
+            c = (unsigned char) ival;
+        }
+    }
+skip_optional:
+    return_value = test_unsigned_char_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_unsigned_char_converter_impl(PyObject *module, unsigned char a,
+                                  unsigned char b, unsigned char c)
+/*[clinic end generated code: output=45920dbedc22eb55 input=021414060993e289]*/
+
+
+/*[clinic input]
+test_short_converter
+
+    a: short = 12
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_short_converter__doc__,
+"test_short_converter($module, a=12, /)\n"
+"--\n"
+"\n");
+
+#define TEST_SHORT_CONVERTER_METHODDEF    \
+    {"test_short_converter", _PyCFunction_CAST(test_short_converter), METH_FASTCALL, test_short_converter__doc__},
+
+static PyObject *
+test_short_converter_impl(PyObject *module, short a);
+
+static PyObject *
+test_short_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    short a = 12;
+
+    if (!_PyArg_CheckPositional("test_short_converter", nargs, 0, 1)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    {
+        long ival = PyLong_AsLong(args[0]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < SHRT_MIN) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > SHRT_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            a = (short) ival;
+        }
+    }
+skip_optional:
+    return_value = test_short_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_short_converter_impl(PyObject *module, short a)
+/*[clinic end generated code: output=a580945bd6963d45 input=6a8a7a509a498ff4]*/
+
+
+/*[clinic input]
+test_unsigned_short_converter
+
+    a: unsigned_short = 12
+    b: unsigned_short(bitwise=False) = 34
+    c: unsigned_short(bitwise=True) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_unsigned_short_converter__doc__,
+"test_unsigned_short_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_UNSIGNED_SHORT_CONVERTER_METHODDEF    \
+    {"test_unsigned_short_converter", _PyCFunction_CAST(test_unsigned_short_converter), METH_FASTCALL, test_unsigned_short_converter__doc__},
+
+static PyObject *
+test_unsigned_short_converter_impl(PyObject *module, unsigned short a,
+                                   unsigned short b, unsigned short c);
+
+static PyObject *
+test_unsigned_short_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    unsigned short a = 12;
+    unsigned short b = 34;
+    unsigned short c = 56;
+
+    if (!_PyArg_CheckPositional("test_unsigned_short_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedShort_Converter(args[0], &a)) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedShort_Converter(args[1], &b)) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    c = (unsigned short)PyLong_AsUnsignedLongMask(args[2]);
+    if (c == (unsigned short)-1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_unsigned_short_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_unsigned_short_converter_impl(PyObject *module, unsigned short a,
+                                   unsigned short b, unsigned short c)
+/*[clinic end generated code: output=e6e990df729114fc input=cdfd8eff3d9176b4]*/
+
+
+/*[clinic input]
+test_int_converter
+
+    a: int = 12
+    b: int(accept={int}) = 34
+    c: int(accept={str}) = 45
+    d: int(type='myenum') = 67
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_int_converter__doc__,
+"test_int_converter($module, a=12, b=34, c=45, d=67, /)\n"
+"--\n"
+"\n");
+
+#define TEST_INT_CONVERTER_METHODDEF    \
+    {"test_int_converter", _PyCFunction_CAST(test_int_converter), METH_FASTCALL, test_int_converter__doc__},
+
+static PyObject *
+test_int_converter_impl(PyObject *module, int a, int b, int c, myenum d);
+
+static PyObject *
+test_int_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int a = 12;
+    int b = 34;
+    int c = 45;
+    myenum d = 67;
+
+    if (!_PyArg_CheckPositional("test_int_converter", nargs, 0, 4)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    a = PyLong_AsInt(args[0]);
+    if (a == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    b = PyLong_AsInt(args[1]);
+    if (b == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (!PyUnicode_Check(args[2])) {
+        _PyArg_BadArgument("test_int_converter", "argument 3", "a unicode character", args[2]);
+        goto exit;
+    }
+    if (PyUnicode_GET_LENGTH(args[2]) != 1) {
+        _PyArg_BadArgument("test_int_converter", "argument 3", "a unicode character", args[2]);
+        goto exit;
+    }
+    c = PyUnicode_READ_CHAR(args[2], 0);
+    if (nargs < 4) {
+        goto skip_optional;
+    }
+    d = PyLong_AsInt(args[3]);
+    if (d == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_int_converter_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_int_converter_impl(PyObject *module, int a, int b, int c, myenum d)
+/*[clinic end generated code: output=5aed87a7589eefb2 input=d20541fc1ca0553e]*/
+
+
+/*[clinic input]
+test_unsigned_int_converter
+
+    a: unsigned_int = 12
+    b: unsigned_int(bitwise=False) = 34
+    c: unsigned_int(bitwise=True) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_unsigned_int_converter__doc__,
+"test_unsigned_int_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_UNSIGNED_INT_CONVERTER_METHODDEF    \
+    {"test_unsigned_int_converter", _PyCFunction_CAST(test_unsigned_int_converter), METH_FASTCALL, test_unsigned_int_converter__doc__},
+
+static PyObject *
+test_unsigned_int_converter_impl(PyObject *module, unsigned int a,
+                                 unsigned int b, unsigned int c);
+
+static PyObject *
+test_unsigned_int_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    unsigned int a = 12;
+    unsigned int b = 34;
+    unsigned int c = 56;
+
+    if (!_PyArg_CheckPositional("test_unsigned_int_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedInt_Converter(args[0], &a)) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedInt_Converter(args[1], &b)) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    c = (unsigned int)PyLong_AsUnsignedLongMask(args[2]);
+    if (c == (unsigned int)-1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_unsigned_int_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_unsigned_int_converter_impl(PyObject *module, unsigned int a,
+                                 unsigned int b, unsigned int c)
+/*[clinic end generated code: output=f9cdbe410ccc98a3 input=5533534828b62fc0]*/
+
+
+/*[clinic input]
+test_long_converter
+
+    a: long = 12
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_long_converter__doc__,
+"test_long_converter($module, a=12, /)\n"
+"--\n"
+"\n");
+
+#define TEST_LONG_CONVERTER_METHODDEF    \
+    {"test_long_converter", _PyCFunction_CAST(test_long_converter), METH_FASTCALL, test_long_converter__doc__},
+
+static PyObject *
+test_long_converter_impl(PyObject *module, long a);
+
+static PyObject *
+test_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    long a = 12;
+
+    if (!_PyArg_CheckPositional("test_long_converter", nargs, 0, 1)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    a = PyLong_AsLong(args[0]);
+    if (a == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_long_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_long_converter_impl(PyObject *module, long a)
+/*[clinic end generated code: output=02b3a83495c1d236 input=d2179e3c9cdcde89]*/
+
+
+/*[clinic input]
+test_unsigned_long_converter
+
+    a: unsigned_long = 12
+    b: unsigned_long(bitwise=False) = 34
+    c: unsigned_long(bitwise=True) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_unsigned_long_converter__doc__,
+"test_unsigned_long_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_UNSIGNED_LONG_CONVERTER_METHODDEF    \
+    {"test_unsigned_long_converter", _PyCFunction_CAST(test_unsigned_long_converter), METH_FASTCALL, test_unsigned_long_converter__doc__},
+
+static PyObject *
+test_unsigned_long_converter_impl(PyObject *module, unsigned long a,
+                                  unsigned long b, unsigned long c);
+
+static PyObject *
+test_unsigned_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    unsigned long a = 12;
+    unsigned long b = 34;
+    unsigned long c = 56;
+
+    if (!_PyArg_CheckPositional("test_unsigned_long_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedLong_Converter(args[0], &a)) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedLong_Converter(args[1], &b)) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (!PyLong_Check(args[2])) {
+        _PyArg_BadArgument("test_unsigned_long_converter", "argument 3", "int", args[2]);
+        goto exit;
+    }
+    c = PyLong_AsUnsignedLongMask(args[2]);
+skip_optional:
+    return_value = test_unsigned_long_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_unsigned_long_converter_impl(PyObject *module, unsigned long a,
+                                  unsigned long b, unsigned long c)
+/*[clinic end generated code: output=540bb0ba2894e1fe input=f450d94cae1ef73b]*/
+
+
+/*[clinic input]
+test_long_long_converter
+
+    a: long_long = 12
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_long_long_converter__doc__,
+"test_long_long_converter($module, a=12, /)\n"
+"--\n"
+"\n");
+
+#define TEST_LONG_LONG_CONVERTER_METHODDEF    \
+    {"test_long_long_converter", _PyCFunction_CAST(test_long_long_converter), METH_FASTCALL, test_long_long_converter__doc__},
+
+static PyObject *
+test_long_long_converter_impl(PyObject *module, long long a);
+
+static PyObject *
+test_long_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    long long a = 12;
+
+    if (!_PyArg_CheckPositional("test_long_long_converter", nargs, 0, 1)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    a = PyLong_AsLongLong(args[0]);
+    if (a == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_long_long_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_long_long_converter_impl(PyObject *module, long long a)
+/*[clinic end generated code: output=f9d4ed79ad2db857 input=d5fc81577ff4dd02]*/
+
+
+/*[clinic input]
+test_unsigned_long_long_converter
+
+    a: unsigned_long_long = 12
+    b: unsigned_long_long(bitwise=False) = 34
+    c: unsigned_long_long(bitwise=True) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_unsigned_long_long_converter__doc__,
+"test_unsigned_long_long_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_UNSIGNED_LONG_LONG_CONVERTER_METHODDEF    \
+    {"test_unsigned_long_long_converter", _PyCFunction_CAST(test_unsigned_long_long_converter), METH_FASTCALL, test_unsigned_long_long_converter__doc__},
+
+static PyObject *
+test_unsigned_long_long_converter_impl(PyObject *module,
+                                       unsigned long long a,
+                                       unsigned long long b,
+                                       unsigned long long c);
+
+static PyObject *
+test_unsigned_long_long_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    unsigned long long a = 12;
+    unsigned long long b = 34;
+    unsigned long long c = 56;
+
+    if (!_PyArg_CheckPositional("test_unsigned_long_long_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedLongLong_Converter(args[0], &a)) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (!_PyLong_UnsignedLongLong_Converter(args[1], &b)) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (!PyLong_Check(args[2])) {
+        _PyArg_BadArgument("test_unsigned_long_long_converter", "argument 3", "int", args[2]);
+        goto exit;
+    }
+    c = PyLong_AsUnsignedLongLongMask(args[2]);
+skip_optional:
+    return_value = test_unsigned_long_long_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_unsigned_long_long_converter_impl(PyObject *module,
+                                       unsigned long long a,
+                                       unsigned long long b,
+                                       unsigned long long c)
+/*[clinic end generated code: output=3d69994f618b46bb input=a15115dc41866ff4]*/
+
+
+/*[clinic input]
+test_Py_ssize_t_converter
+
+    a: Py_ssize_t = 12
+    b: Py_ssize_t(accept={int}) = 34
+    c: Py_ssize_t(accept={int, NoneType}) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_Py_ssize_t_converter__doc__,
+"test_Py_ssize_t_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PY_SSIZE_T_CONVERTER_METHODDEF    \
+    {"test_Py_ssize_t_converter", _PyCFunction_CAST(test_Py_ssize_t_converter), METH_FASTCALL, test_Py_ssize_t_converter__doc__},
+
+static PyObject *
+test_Py_ssize_t_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
+                               Py_ssize_t c);
+
+static PyObject *
+test_Py_ssize_t_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    Py_ssize_t a = 12;
+    Py_ssize_t b = 34;
+    Py_ssize_t c = 56;
+
+    if (!_PyArg_CheckPositional("test_Py_ssize_t_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    {
+        Py_ssize_t ival = -1;
+        PyObject *iobj = _PyNumber_Index(args[0]);
+        if (iobj != NULL) {
+            ival = PyLong_AsSsize_t(iobj);
+            Py_DECREF(iobj);
+        }
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        a = ival;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    {
+        Py_ssize_t ival = -1;
+        PyObject *iobj = _PyNumber_Index(args[1]);
+        if (iobj != NULL) {
+            ival = PyLong_AsSsize_t(iobj);
+            Py_DECREF(iobj);
+        }
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        b = ival;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (!_Py_convert_optional_to_ssize_t(args[2], &c)) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_Py_ssize_t_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_Py_ssize_t_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
+                               Py_ssize_t c)
+/*[clinic end generated code: output=48214bc3d01f4dd7 input=3855f184bb3f299d]*/
+
+
+/*[clinic input]
+test_slice_index_converter
+
+    a: slice_index = 12
+    b: slice_index(accept={int}) = 34
+    c: slice_index(accept={int, NoneType}) = 56
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_slice_index_converter__doc__,
+"test_slice_index_converter($module, a=12, b=34, c=56, /)\n"
+"--\n"
+"\n");
+
+#define TEST_SLICE_INDEX_CONVERTER_METHODDEF    \
+    {"test_slice_index_converter", _PyCFunction_CAST(test_slice_index_converter), METH_FASTCALL, test_slice_index_converter__doc__},
+
+static PyObject *
+test_slice_index_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
+                                Py_ssize_t c);
+
+static PyObject *
+test_slice_index_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    Py_ssize_t a = 12;
+    Py_ssize_t b = 34;
+    Py_ssize_t c = 56;
+
+    if (!_PyArg_CheckPositional("test_slice_index_converter", nargs, 0, 3)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (!_PyEval_SliceIndex(args[0], &a)) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (!_PyEval_SliceIndexNotNone(args[1], &b)) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (!_PyEval_SliceIndex(args[2], &c)) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_slice_index_converter_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_slice_index_converter_impl(PyObject *module, Py_ssize_t a, Py_ssize_t b,
+                                Py_ssize_t c)
+/*[clinic end generated code: output=67506ed999361212 input=edeadb0ee126f531]*/
+
+
+/*[clinic input]
+test_size_t_converter
+
+    a: size_t = 12
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_size_t_converter__doc__,
+"test_size_t_converter($module, a=12, /)\n"
+"--\n"
+"\n");
+
+#define TEST_SIZE_T_CONVERTER_METHODDEF    \
+    {"test_size_t_converter", _PyCFunction_CAST(test_size_t_converter), METH_FASTCALL, test_size_t_converter__doc__},
+
+static PyObject *
+test_size_t_converter_impl(PyObject *module, size_t a);
+
+static PyObject *
+test_size_t_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    size_t a = 12;
+
+    if (!_PyArg_CheckPositional("test_size_t_converter", nargs, 0, 1)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (!_PyLong_Size_t_Converter(args[0], &a)) {
+        goto exit;
+    }
+skip_optional:
+    return_value = test_size_t_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_size_t_converter_impl(PyObject *module, size_t a)
+/*[clinic end generated code: output=1653ecb5cbf775aa input=52e93a0fed0f1fb3]*/
+
+
+/*[clinic input]
+test_float_converter
+
+    a: float = 12.5
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_float_converter__doc__,
+"test_float_converter($module, a=12.5, /)\n"
+"--\n"
+"\n");
+
+#define TEST_FLOAT_CONVERTER_METHODDEF    \
+    {"test_float_converter", _PyCFunction_CAST(test_float_converter), METH_FASTCALL, test_float_converter__doc__},
+
+static PyObject *
+test_float_converter_impl(PyObject *module, float a);
+
+static PyObject *
+test_float_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    float a = 12.5;
+
+    if (!_PyArg_CheckPositional("test_float_converter", nargs, 0, 1)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (PyFloat_CheckExact(args[0])) {
+        a = (float) (PyFloat_AS_DOUBLE(args[0]));
+    }
+    else
+    {
+        a = (float) PyFloat_AsDouble(args[0]);
+        if (a == -1.0 && PyErr_Occurred()) {
+            goto exit;
+        }
+    }
+skip_optional:
+    return_value = test_float_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_float_converter_impl(PyObject *module, float a)
+/*[clinic end generated code: output=36ad006990a8a91e input=259c0d98eca35034]*/
+
+
+/*[clinic input]
+test_double_converter
+
+    a: double = 12.5
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_double_converter__doc__,
+"test_double_converter($module, a=12.5, /)\n"
+"--\n"
+"\n");
+
+#define TEST_DOUBLE_CONVERTER_METHODDEF    \
+    {"test_double_converter", _PyCFunction_CAST(test_double_converter), METH_FASTCALL, test_double_converter__doc__},
+
+static PyObject *
+test_double_converter_impl(PyObject *module, double a);
+
+static PyObject *
+test_double_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    double a = 12.5;
+
+    if (!_PyArg_CheckPositional("test_double_converter", nargs, 0, 1)) {
+        goto exit;
+    }
+    if (nargs < 1) {
+        goto skip_optional;
+    }
+    if (PyFloat_CheckExact(args[0])) {
+        a = PyFloat_AS_DOUBLE(args[0]);
+    }
+    else
+    {
+        a = PyFloat_AsDouble(args[0]);
+        if (a == -1.0 && PyErr_Occurred()) {
+            goto exit;
+        }
+    }
+skip_optional:
+    return_value = test_double_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_double_converter_impl(PyObject *module, double a)
+/*[clinic end generated code: output=7435925592bac795 input=c6a9945706a41c27]*/
+
+
+/*[clinic input]
+test_Py_complex_converter
+
+    a: Py_complex
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_Py_complex_converter__doc__,
+"test_Py_complex_converter($module, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PY_COMPLEX_CONVERTER_METHODDEF    \
+    {"test_Py_complex_converter", (PyCFunction)test_Py_complex_converter, METH_O, test_Py_complex_converter__doc__},
+
+static PyObject *
+test_Py_complex_converter_impl(PyObject *module, Py_complex a);
+
+static PyObject *
+test_Py_complex_converter(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    Py_complex a;
+
+    a = PyComplex_AsCComplex(arg);
+    if (PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = test_Py_complex_converter_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_Py_complex_converter_impl(PyObject *module, Py_complex a)
+/*[clinic end generated code: output=c2ecbec2144ca540 input=070f216a515beb79]*/
+
+
+/*[clinic input]
+test_str_converter
+
+    a: str = NULL
+    b: str = "ab"
+    c: str(accept={str}) = "cd"
+    d: str(accept={robuffer}) = "cef"
+    e: str(accept={str, NoneType}) = "gh"
+    f: str(accept={robuffer}, zeroes=True) = "ij"
+    g: str(accept={robuffer, str}, zeroes=True) = "kl"
+    h: str(accept={robuffer, str, NoneType}, zeroes=True) = "mn"
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_str_converter__doc__,
+"test_str_converter($module, a=<unrepresentable>, b=\'ab\', c=\'cd\',\n"
+"                   d=\'cef\', e=\'gh\', f=\'ij\', g=\'kl\', h=\'mn\', /)\n"
+"--\n"
+"\n");
+
+#define TEST_STR_CONVERTER_METHODDEF    \
+    {"test_str_converter", _PyCFunction_CAST(test_str_converter), METH_FASTCALL, test_str_converter__doc__},
+
+static PyObject *
+test_str_converter_impl(PyObject *module, const char *a, const char *b,
+                        const char *c, const char *d, const char *e,
+                        const char *f, Py_ssize_t f_length, const char *g,
+                        Py_ssize_t g_length, const char *h,
+                        Py_ssize_t h_length);
+
+static PyObject *
+test_str_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    const char *a = NULL;
+    const char *b = "ab";
+    const char *c = "cd";
+    const char *d = "cef";
+    const char *e = "gh";
+    const char *f = "ij";
+    Py_ssize_t f_length;
+    const char *g = "kl";
+    Py_ssize_t g_length;
+    const char *h = "mn";
+    Py_ssize_t h_length;
+
+    if (!_PyArg_ParseStack(args, nargs, "|sssyzy#s#z#:test_str_converter",
+        &a, &b, &c, &d, &e, &f, &f_length, &g, &g_length, &h, &h_length)) {
+        goto exit;
+    }
+    return_value = test_str_converter_impl(module, a, b, c, d, e, f, f_length, g, g_length, h, h_length);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_str_converter_impl(PyObject *module, const char *a, const char *b,
+                        const char *c, const char *d, const char *e,
+                        const char *f, Py_ssize_t f_length, const char *g,
+                        Py_ssize_t g_length, const char *h,
+                        Py_ssize_t h_length)
+/*[clinic end generated code: output=82cb06d5237ef062 input=8afe9da8185cd38c]*/
+
+
+/*[clinic input]
+test_str_converter_encoding
+
+    a: str(encoding="idna")
+    b: str(encoding="idna", accept={str})
+    c: str(encoding="idna", accept={bytes, bytearray, str})
+    d: str(encoding="idna", zeroes=True)
+    e: str(encoding="idna", accept={bytes, bytearray, str}, zeroes=True)
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_str_converter_encoding__doc__,
+"test_str_converter_encoding($module, a, b, c, d, e, /)\n"
+"--\n"
+"\n");
+
+#define TEST_STR_CONVERTER_ENCODING_METHODDEF    \
+    {"test_str_converter_encoding", _PyCFunction_CAST(test_str_converter_encoding), METH_FASTCALL, test_str_converter_encoding__doc__},
+
+static PyObject *
+test_str_converter_encoding_impl(PyObject *module, char *a, char *b, char *c,
+                                 char *d, Py_ssize_t d_length, char *e,
+                                 Py_ssize_t e_length);
+
+static PyObject *
+test_str_converter_encoding(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    char *a = NULL;
+    char *b = NULL;
+    char *c = NULL;
+    char *d = NULL;
+    Py_ssize_t d_length;
+    char *e = NULL;
+    Py_ssize_t e_length;
+
+    if (!_PyArg_ParseStack(args, nargs, "esesetes#et#:test_str_converter_encoding",
+        "idna", &a, "idna", &b, "idna", &c, "idna", &d, &d_length, "idna", &e, &e_length)) {
+        goto exit;
+    }
+    return_value = test_str_converter_encoding_impl(module, a, b, c, d, d_length, e, e_length);
+    /* Post parse cleanup for a */
+    PyMem_FREE(a);
+    /* Post parse cleanup for b */
+    PyMem_FREE(b);
+    /* Post parse cleanup for c */
+    PyMem_FREE(c);
+    /* Post parse cleanup for d */
+    PyMem_FREE(d);
+    /* Post parse cleanup for e */
+    PyMem_FREE(e);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_str_converter_encoding_impl(PyObject *module, char *a, char *b, char *c,
+                                 char *d, Py_ssize_t d_length, char *e,
+                                 Py_ssize_t e_length)
+/*[clinic end generated code: output=999c1deecfa15b0a input=eb4c38e1f898f402]*/
+
+
+/*[clinic input]
+test_Py_UNICODE_converter
+
+    a: Py_UNICODE
+    b: Py_UNICODE(accept={str})
+    c: Py_UNICODE(accept={str, NoneType})
+    d: Py_UNICODE(zeroes=True)
+    e: Py_UNICODE(accept={str, NoneType}, zeroes=True)
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_Py_UNICODE_converter__doc__,
+"test_Py_UNICODE_converter($module, a, b, c, d, e, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PY_UNICODE_CONVERTER_METHODDEF    \
+    {"test_Py_UNICODE_converter", _PyCFunction_CAST(test_Py_UNICODE_converter), METH_FASTCALL, test_Py_UNICODE_converter__doc__},
+
+static PyObject *
+test_Py_UNICODE_converter_impl(PyObject *module, const wchar_t *a,
+                               const wchar_t *b, const wchar_t *c,
+                               const wchar_t *d, Py_ssize_t d_length,
+                               const wchar_t *e, Py_ssize_t e_length);
+
+static PyObject *
+test_Py_UNICODE_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    const wchar_t *a = NULL;
+    const wchar_t *b = NULL;
+    const wchar_t *c = NULL;
+    const wchar_t *d = NULL;
+    Py_ssize_t d_length;
+    const wchar_t *e = NULL;
+    Py_ssize_t e_length;
+
+    if (!_PyArg_ParseStack(args, nargs, "O&O&O&u#Z#:test_Py_UNICODE_converter",
+        _PyUnicode_WideCharString_Converter, &a, _PyUnicode_WideCharString_Converter, &b, _PyUnicode_WideCharString_Opt_Converter, &c, &d, &d_length, &e, &e_length)) {
+        goto exit;
+    }
+    return_value = test_Py_UNICODE_converter_impl(module, a, b, c, d, d_length, e, e_length);
+
+exit:
+    /* Cleanup for a */
+    PyMem_Free((void *)a);
+    /* Cleanup for b */
+    PyMem_Free((void *)b);
+    /* Cleanup for c */
+    PyMem_Free((void *)c);
+
+    return return_value;
+}
+
+static PyObject *
+test_Py_UNICODE_converter_impl(PyObject *module, const wchar_t *a,
+                               const wchar_t *b, const wchar_t *c,
+                               const wchar_t *d, Py_ssize_t d_length,
+                               const wchar_t *e, Py_ssize_t e_length)
+/*[clinic end generated code: output=529af9cda2a20349 input=064a3b68ad7f04b0]*/
+
+
+/*[clinic input]
+test_Py_buffer_converter
+
+    a: Py_buffer
+    b: Py_buffer(accept={buffer})
+    c: Py_buffer(accept={str, buffer})
+    d: Py_buffer(accept={str, buffer, NoneType})
+    e: Py_buffer(accept={rwbuffer})
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_Py_buffer_converter__doc__,
+"test_Py_buffer_converter($module, a, b, c, d, e, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PY_BUFFER_CONVERTER_METHODDEF    \
+    {"test_Py_buffer_converter", _PyCFunction_CAST(test_Py_buffer_converter), METH_FASTCALL, test_Py_buffer_converter__doc__},
+
+static PyObject *
+test_Py_buffer_converter_impl(PyObject *module, Py_buffer *a, Py_buffer *b,
+                              Py_buffer *c, Py_buffer *d, Py_buffer *e);
+
+static PyObject *
+test_Py_buffer_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    Py_buffer a = {NULL, NULL};
+    Py_buffer b = {NULL, NULL};
+    Py_buffer c = {NULL, NULL};
+    Py_buffer d = {NULL, NULL};
+    Py_buffer e = {NULL, NULL};
+
+    if (!_PyArg_ParseStack(args, nargs, "y*y*s*z*w*:test_Py_buffer_converter",
+        &a, &b, &c, &d, &e)) {
+        goto exit;
+    }
+    return_value = test_Py_buffer_converter_impl(module, &a, &b, &c, &d, &e);
+
+exit:
+    /* Cleanup for a */
+    if (a.obj) {
+       PyBuffer_Release(&a);
+    }
+    /* Cleanup for b */
+    if (b.obj) {
+       PyBuffer_Release(&b);
+    }
+    /* Cleanup for c */
+    if (c.obj) {
+       PyBuffer_Release(&c);
+    }
+    /* Cleanup for d */
+    if (d.obj) {
+       PyBuffer_Release(&d);
+    }
+    /* Cleanup for e */
+    if (e.obj) {
+       PyBuffer_Release(&e);
+    }
+
+    return return_value;
+}
+
+static PyObject *
+test_Py_buffer_converter_impl(PyObject *module, Py_buffer *a, Py_buffer *b,
+                              Py_buffer *c, Py_buffer *d, Py_buffer *e)
+/*[clinic end generated code: output=a153b71b4f45f952 input=6a9da0f56f9525fd]*/
+
+
+/*[clinic input]
+test_keywords
+
+    a: object
+    b: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_keywords__doc__,
+"test_keywords($module, /, a, b)\n"
+"--\n"
+"\n");
+
+#define TEST_KEYWORDS_METHODDEF    \
+    {"test_keywords", _PyCFunction_CAST(test_keywords), METH_FASTCALL|METH_KEYWORDS, test_keywords__doc__},
+
+static PyObject *
+test_keywords_impl(PyObject *module, PyObject *a, PyObject *b);
+
+static PyObject *
+test_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_keywords",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *b;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    return_value = test_keywords_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=73d46a9ae3320f96 input=0d3484844749c05b]*/
+
+
+/*[clinic input]
+test_keywords_kwonly
+
+    a: object
+    *
+    b: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_keywords_kwonly__doc__,
+"test_keywords_kwonly($module, /, a, *, b)\n"
+"--\n"
+"\n");
+
+#define TEST_KEYWORDS_KWONLY_METHODDEF    \
+    {"test_keywords_kwonly", _PyCFunction_CAST(test_keywords_kwonly), METH_FASTCALL|METH_KEYWORDS, test_keywords_kwonly__doc__},
+
+static PyObject *
+test_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b);
+
+static PyObject *
+test_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_keywords_kwonly",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *b;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    return_value = test_keywords_kwonly_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=c9f02a41f425897d input=384adc78bfa0bff7]*/
+
+
+/*[clinic input]
+test_keywords_opt
+
+    a: object
+    b: object = None
+    c: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_keywords_opt__doc__,
+"test_keywords_opt($module, /, a, b=None, c=None)\n"
+"--\n"
+"\n");
+
+#define TEST_KEYWORDS_OPT_METHODDEF    \
+    {"test_keywords_opt", _PyCFunction_CAST(test_keywords_opt), METH_FASTCALL|METH_KEYWORDS, test_keywords_opt__doc__},
+
+static PyObject *
+test_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                       PyObject *c);
+
+static PyObject *
+test_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_keywords_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    c = args[2];
+skip_optional_pos:
+    return_value = test_keywords_opt_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                       PyObject *c)
+/*[clinic end generated code: output=b35d4e66f7283e46 input=eda7964f784f4607]*/
+
+
+/*[clinic input]
+test_keywords_opt_kwonly
+
+    a: object
+    b: object = None
+    *
+    c: object = None
+    d: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_keywords_opt_kwonly__doc__,
+"test_keywords_opt_kwonly($module, /, a, b=None, *, c=None, d=None)\n"
+"--\n"
+"\n");
+
+#define TEST_KEYWORDS_OPT_KWONLY_METHODDEF    \
+    {"test_keywords_opt_kwonly", _PyCFunction_CAST(test_keywords_opt_kwonly), METH_FASTCALL|METH_KEYWORDS, test_keywords_opt_kwonly__doc__},
+
+static PyObject *
+test_keywords_opt_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
+                              PyObject *c, PyObject *d);
+
+static PyObject *
+test_keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_keywords_opt_kwonly",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+skip_optional_pos:
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    d = args[3];
+skip_optional_kwonly:
+    return_value = test_keywords_opt_kwonly_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_keywords_opt_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
+                              PyObject *c, PyObject *d)
+/*[clinic end generated code: output=ede7e6e65106bf2b input=209387a4815e5082]*/
+
+
+/*[clinic input]
+test_keywords_kwonly_opt
+
+    a: object
+    *
+    b: object = None
+    c: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_keywords_kwonly_opt__doc__,
+"test_keywords_kwonly_opt($module, /, a, *, b=None, c=None)\n"
+"--\n"
+"\n");
+
+#define TEST_KEYWORDS_KWONLY_OPT_METHODDEF    \
+    {"test_keywords_kwonly_opt", _PyCFunction_CAST(test_keywords_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_keywords_kwonly_opt__doc__},
+
+static PyObject *
+test_keywords_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                              PyObject *c);
+
+static PyObject *
+test_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_keywords_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    c = args[2];
+skip_optional_kwonly:
+    return_value = test_keywords_kwonly_opt_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_keywords_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                              PyObject *c)
+/*[clinic end generated code: output=36d4df939a4c3eef input=18393cc64fa000f4]*/
+
+
+/*[clinic input]
+test_posonly_keywords
+
+    a: object
+    /
+    b: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords__doc__,
+"test_posonly_keywords($module, a, /, b)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_METHODDEF    \
+    {"test_posonly_keywords", _PyCFunction_CAST(test_posonly_keywords), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords__doc__},
+
+static PyObject *
+test_posonly_keywords_impl(PyObject *module, PyObject *a, PyObject *b);
+
+static PyObject *
+test_posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *b;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    return_value = test_posonly_keywords_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=4835f4b6cf386c28 input=1767b0ebdf06060e]*/
+
+
+/*[clinic input]
+test_posonly_kwonly
+
+    a: object
+    /
+    *
+    c: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_kwonly__doc__,
+"test_posonly_kwonly($module, a, /, *, c)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KWONLY_METHODDEF    \
+    {"test_posonly_kwonly", _PyCFunction_CAST(test_posonly_kwonly), METH_FASTCALL|METH_KEYWORDS, test_posonly_kwonly__doc__},
+
+static PyObject *
+test_posonly_kwonly_impl(PyObject *module, PyObject *a, PyObject *c);
+
+static PyObject *
+test_posonly_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_kwonly",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *c;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    c = args[1];
+    return_value = test_posonly_kwonly_impl(module, a, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_kwonly_impl(PyObject *module, PyObject *a, PyObject *c)
+/*[clinic end generated code: output=2570ea156a8d3cb5 input=9042f2818f664839]*/
+
+
+/*[clinic input]
+test_posonly_keywords_kwonly
+
+    a: object
+    /
+    b: object
+    *
+    c: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_kwonly__doc__,
+"test_posonly_keywords_kwonly($module, a, /, b, *, c)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_KWONLY_METHODDEF    \
+    {"test_posonly_keywords_kwonly", _PyCFunction_CAST(test_posonly_keywords_kwonly), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_kwonly__doc__},
+
+static PyObject *
+test_posonly_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c);
+
+static PyObject *
+test_posonly_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_kwonly",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    return_value = test_posonly_keywords_kwonly_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c)
+/*[clinic end generated code: output=aaa0e6b5ce02900d input=29546ebdca492fea]*/
+
+
+/*[clinic input]
+test_posonly_keywords_opt
+
+    a: object
+    /
+    b: object
+    c: object = None
+    d: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_opt__doc__,
+"test_posonly_keywords_opt($module, a, /, b, c=None, d=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_OPT_METHODDEF    \
+    {"test_posonly_keywords_opt", _PyCFunction_CAST(test_posonly_keywords_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt__doc__},
+
+static PyObject *
+test_posonly_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                               PyObject *c, PyObject *d);
+
+static PyObject *
+test_posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 4, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    d = args[3];
+skip_optional_pos:
+    return_value = test_posonly_keywords_opt_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                               PyObject *c, PyObject *d)
+/*[clinic end generated code: output=1d9f2d8420d0a85f input=cdf5a9625e554e9b]*/
+
+
+/*[clinic input]
+test_posonly_keywords_opt2
+
+    a: object
+    /
+    b: object = None
+    c: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_opt2__doc__,
+"test_posonly_keywords_opt2($module, a, /, b=None, c=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_OPT2_METHODDEF    \
+    {"test_posonly_keywords_opt2", _PyCFunction_CAST(test_posonly_keywords_opt2), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt2__doc__},
+
+static PyObject *
+test_posonly_keywords_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
+                                PyObject *c);
+
+static PyObject *
+test_posonly_keywords_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_opt2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    c = args[2];
+skip_optional_pos:
+    return_value = test_posonly_keywords_opt2_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
+                                PyObject *c)
+/*[clinic end generated code: output=a83caa0505b296cf input=1581299d21d16f14]*/
+
+
+/*[clinic input]
+test_posonly_opt_keywords_opt
+
+    a: object
+    b: object = None
+    /
+    c: object = None
+    d: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_opt_keywords_opt__doc__,
+"test_posonly_opt_keywords_opt($module, a, b=None, /, c=None, d=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_OPT_KEYWORDS_OPT_METHODDEF    \
+    {"test_posonly_opt_keywords_opt", _PyCFunction_CAST(test_posonly_opt_keywords_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_opt_keywords_opt__doc__},
+
+static PyObject *
+test_posonly_opt_keywords_opt_impl(PyObject *module, PyObject *a,
+                                   PyObject *b, PyObject *c, PyObject *d);
+
+static PyObject *
+test_posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_opt_keywords_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 4, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (nargs < 2) {
+        goto skip_optional_posonly;
+    }
+    noptargs--;
+    b = args[1];
+skip_optional_posonly:
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    d = args[3];
+skip_optional_pos:
+    return_value = test_posonly_opt_keywords_opt_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_opt_keywords_opt_impl(PyObject *module, PyObject *a,
+                                   PyObject *b, PyObject *c, PyObject *d)
+/*[clinic end generated code: output=0b24fba3dc04d26b input=408798ec3d42949f]*/
+
+
+/*[clinic input]
+test_posonly_kwonly_opt
+
+    a: object
+    /
+    *
+    b: object
+    c: object = None
+    d: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_kwonly_opt__doc__,
+"test_posonly_kwonly_opt($module, a, /, *, b, c=None, d=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KWONLY_OPT_METHODDEF    \
+    {"test_posonly_kwonly_opt", _PyCFunction_CAST(test_posonly_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_kwonly_opt__doc__},
+
+static PyObject *
+test_posonly_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                             PyObject *c, PyObject *d);
+
+static PyObject *
+test_posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    d = args[3];
+skip_optional_kwonly:
+    return_value = test_posonly_kwonly_opt_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                             PyObject *c, PyObject *d)
+/*[clinic end generated code: output=592b217bca2f7bcc input=8d8e5643bbbc2309]*/
+
+
+/*[clinic input]
+test_posonly_kwonly_opt2
+
+    a: object
+    /
+    *
+    b: object = None
+    c: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_kwonly_opt2__doc__,
+"test_posonly_kwonly_opt2($module, a, /, *, b=None, c=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KWONLY_OPT2_METHODDEF    \
+    {"test_posonly_kwonly_opt2", _PyCFunction_CAST(test_posonly_kwonly_opt2), METH_FASTCALL|METH_KEYWORDS, test_posonly_kwonly_opt2__doc__},
+
+static PyObject *
+test_posonly_kwonly_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
+                              PyObject *c);
+
+static PyObject *
+test_posonly_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_kwonly_opt2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    c = args[2];
+skip_optional_kwonly:
+    return_value = test_posonly_kwonly_opt2_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_kwonly_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
+                              PyObject *c)
+/*[clinic end generated code: output=b8b00420826bc11f input=f7e5eed94f75fff0]*/
+
+
+/*[clinic input]
+test_posonly_opt_kwonly_opt
+
+    a: object
+    b: object = None
+    /
+    *
+    c: object = None
+    d: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_opt_kwonly_opt__doc__,
+"test_posonly_opt_kwonly_opt($module, a, b=None, /, *, c=None, d=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_OPT_KWONLY_OPT_METHODDEF    \
+    {"test_posonly_opt_kwonly_opt", _PyCFunction_CAST(test_posonly_opt_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_opt_kwonly_opt__doc__},
+
+static PyObject *
+test_posonly_opt_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                                 PyObject *c, PyObject *d);
+
+static PyObject *
+test_posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_opt_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (nargs < 2) {
+        goto skip_optional_posonly;
+    }
+    noptargs--;
+    b = args[1];
+skip_optional_posonly:
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    d = args[3];
+skip_optional_kwonly:
+    return_value = test_posonly_opt_kwonly_opt_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_opt_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
+                                 PyObject *c, PyObject *d)
+/*[clinic end generated code: output=3b9ee879ebee285a input=1e557dc979d120fd]*/
+
+
+/*[clinic input]
+test_posonly_keywords_kwonly_opt
+
+    a: object
+    /
+    b: object
+    *
+    c: object
+    d: object = None
+    e: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_kwonly_opt__doc__,
+"test_posonly_keywords_kwonly_opt($module, a, /, b, *, c, d=None, e=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_KWONLY_OPT_METHODDEF    \
+    {"test_posonly_keywords_kwonly_opt", _PyCFunction_CAST(test_posonly_keywords_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_kwonly_opt__doc__},
+
+static PyObject *
+test_posonly_keywords_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                      PyObject *b, PyObject *c, PyObject *d,
+                                      PyObject *e);
+
+static PyObject *
+test_posonly_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", "e", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[5];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d = Py_None;
+    PyObject *e = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[3]) {
+        d = args[3];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    e = args[4];
+skip_optional_kwonly:
+    return_value = test_posonly_keywords_kwonly_opt_impl(module, a, b, c, d, e);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                      PyObject *b, PyObject *c, PyObject *d,
+                                      PyObject *e)
+/*[clinic end generated code: output=d380f84f81cc0e45 input=c3884a4f956fdc89]*/
+
+
+/*[clinic input]
+test_posonly_keywords_kwonly_opt2
+
+    a: object
+    /
+    b: object
+    *
+    c: object = None
+    d: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_kwonly_opt2__doc__,
+"test_posonly_keywords_kwonly_opt2($module, a, /, b, *, c=None, d=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_KWONLY_OPT2_METHODDEF    \
+    {"test_posonly_keywords_kwonly_opt2", _PyCFunction_CAST(test_posonly_keywords_kwonly_opt2), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_kwonly_opt2__doc__},
+
+static PyObject *
+test_posonly_keywords_kwonly_opt2_impl(PyObject *module, PyObject *a,
+                                       PyObject *b, PyObject *c, PyObject *d);
+
+static PyObject *
+test_posonly_keywords_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_kwonly_opt2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    d = args[3];
+skip_optional_kwonly:
+    return_value = test_posonly_keywords_kwonly_opt2_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_kwonly_opt2_impl(PyObject *module, PyObject *a,
+                                       PyObject *b, PyObject *c, PyObject *d)
+/*[clinic end generated code: output=ee629e962cb06992 input=68d01d7c0f6dafb0]*/
+
+
+/*[clinic input]
+test_posonly_keywords_opt_kwonly_opt
+
+    a: object
+    /
+    b: object
+    c: object = None
+    *
+    d: object = None
+    e: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_opt_kwonly_opt__doc__,
+"test_posonly_keywords_opt_kwonly_opt($module, a, /, b, c=None, *,\n"
+"                                     d=None, e=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_OPT_KWONLY_OPT_METHODDEF    \
+    {"test_posonly_keywords_opt_kwonly_opt", _PyCFunction_CAST(test_posonly_keywords_opt_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt_kwonly_opt__doc__},
+
+static PyObject *
+test_posonly_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                          PyObject *b, PyObject *c,
+                                          PyObject *d, PyObject *e);
+
+static PyObject *
+test_posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", "e", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_opt_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[5];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+    PyObject *e = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+skip_optional_pos:
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[3]) {
+        d = args[3];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    e = args[4];
+skip_optional_kwonly:
+    return_value = test_posonly_keywords_opt_kwonly_opt_impl(module, a, b, c, d, e);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                          PyObject *b, PyObject *c,
+                                          PyObject *d, PyObject *e)
+/*[clinic end generated code: output=a2721babb42ecfd1 input=d0883d45876f186c]*/
+
+
+/*[clinic input]
+test_posonly_keywords_opt2_kwonly_opt
+
+    a: object
+    /
+    b: object = None
+    c: object = None
+    *
+    d: object = None
+    e: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_keywords_opt2_kwonly_opt__doc__,
+"test_posonly_keywords_opt2_kwonly_opt($module, a, /, b=None, c=None, *,\n"
+"                                      d=None, e=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_KEYWORDS_OPT2_KWONLY_OPT_METHODDEF    \
+    {"test_posonly_keywords_opt2_kwonly_opt", _PyCFunction_CAST(test_posonly_keywords_opt2_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_keywords_opt2_kwonly_opt__doc__},
+
+static PyObject *
+test_posonly_keywords_opt2_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                           PyObject *b, PyObject *c,
+                                           PyObject *d, PyObject *e);
+
+static PyObject *
+test_posonly_keywords_opt2_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", "e", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_keywords_opt2_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[5];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+    PyObject *e = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+skip_optional_pos:
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[3]) {
+        d = args[3];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    e = args[4];
+skip_optional_kwonly:
+    return_value = test_posonly_keywords_opt2_kwonly_opt_impl(module, a, b, c, d, e);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_keywords_opt2_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                           PyObject *b, PyObject *c,
+                                           PyObject *d, PyObject *e)
+/*[clinic end generated code: output=0626203eedb6e7e8 input=c95e2e1ec93035ad]*/
+
+
+/*[clinic input]
+test_posonly_opt_keywords_opt_kwonly_opt
+
+    a: object
+    b: object = None
+    /
+    c: object = None
+    d: object = None
+    *
+    e: object = None
+    f: object = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_posonly_opt_keywords_opt_kwonly_opt__doc__,
+"test_posonly_opt_keywords_opt_kwonly_opt($module, a, b=None, /, c=None,\n"
+"                                         d=None, *, e=None, f=None)\n"
+"--\n"
+"\n");
+
+#define TEST_POSONLY_OPT_KEYWORDS_OPT_KWONLY_OPT_METHODDEF    \
+    {"test_posonly_opt_keywords_opt_kwonly_opt", _PyCFunction_CAST(test_posonly_opt_keywords_opt_kwonly_opt), METH_FASTCALL|METH_KEYWORDS, test_posonly_opt_keywords_opt_kwonly_opt__doc__},
+
+static PyObject *
+test_posonly_opt_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                              PyObject *b, PyObject *c,
+                                              PyObject *d, PyObject *e,
+                                              PyObject *f);
+
+static PyObject *
+test_posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "", "c", "d", "e", "f", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_posonly_opt_keywords_opt_kwonly_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[6];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+    PyObject *d = Py_None;
+    PyObject *e = Py_None;
+    PyObject *f = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 4, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (nargs < 2) {
+        goto skip_optional_posonly;
+    }
+    noptargs--;
+    b = args[1];
+skip_optional_posonly:
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[2]) {
+        c = args[2];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[3]) {
+        d = args[3];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+skip_optional_pos:
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[4]) {
+        e = args[4];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    f = args[5];
+skip_optional_kwonly:
+    return_value = test_posonly_opt_keywords_opt_kwonly_opt_impl(module, a, b, c, d, e, f);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_posonly_opt_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
+                                              PyObject *b, PyObject *c,
+                                              PyObject *d, PyObject *e,
+                                              PyObject *f)
+/*[clinic end generated code: output=07d8acc04558a5a0 input=9914857713c5bbf8]*/
+
+/*[clinic input]
+test_keyword_only_parameter
+
+
+    *
+    co_lnotab: PyBytesObject(c_default="(PyBytesObject *)self->co_lnotab") = None
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_keyword_only_parameter__doc__,
+"test_keyword_only_parameter($module, /, *, co_lnotab=None)\n"
+"--\n"
+"\n");
+
+#define TEST_KEYWORD_ONLY_PARAMETER_METHODDEF    \
+    {"test_keyword_only_parameter", _PyCFunction_CAST(test_keyword_only_parameter), METH_FASTCALL|METH_KEYWORDS, test_keyword_only_parameter__doc__},
+
+static PyObject *
+test_keyword_only_parameter_impl(PyObject *module, PyBytesObject *co_lnotab);
+
+static PyObject *
+test_keyword_only_parameter(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(co_lnotab), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"co_lnotab", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_keyword_only_parameter",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyBytesObject *co_lnotab = (PyBytesObject *)self->co_lnotab;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 0, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (!PyBytes_Check(args[0])) {
+        _PyArg_BadArgument("test_keyword_only_parameter", "argument 'co_lnotab'", "bytes", args[0]);
+        goto exit;
+    }
+    co_lnotab = (PyBytesObject *)args[0];
+skip_optional_kwonly:
+    return_value = test_keyword_only_parameter_impl(module, co_lnotab);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_keyword_only_parameter_impl(PyObject *module, PyBytesObject *co_lnotab)
+/*[clinic end generated code: output=b12fe2e515a62603 input=303df5046c7e37a3]*/
+
+
+/*[clinic input]
+output push
+output preset buffer
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=5bff3376ee0df0b5]*/
+
+#ifdef CONDITION_A
+/*[clinic input]
+test_preprocessor_guarded_condition_a
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_condition_a_impl(PyObject *module)
+/*[clinic end generated code: output=ad012af18085add6 input=8edb8706a98cda7e]*/
+#elif CONDITION_B
+/*[clinic input]
+test_preprocessor_guarded_elif_condition_b
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_elif_condition_b_impl(PyObject *module)
+/*[clinic end generated code: output=615f2dee82b138d1 input=53777cebbf7fee32]*/
+#else
+/*[clinic input]
+test_preprocessor_guarded_else
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_else_impl(PyObject *module)
+/*[clinic end generated code: output=13af7670aac51b12 input=6657ab31d74c29fc]*/
+#endif
+
+#ifndef CONDITION_C
+/*[clinic input]
+test_preprocessor_guarded_ifndef_condition_c
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_ifndef_condition_c_impl(PyObject *module)
+/*[clinic end generated code: output=ed422e8c895bb0a5 input=e9b50491cea2b668]*/
+#else
+/*[clinic input]
+test_preprocessor_guarded_ifndef_not_condition_c
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_ifndef_not_condition_c_impl(PyObject *module)
+/*[clinic end generated code: output=de6f4c6a67f8c536 input=da74e30e01c6f2c5]*/
+#endif
+
+#if \
+CONDITION_D
+/*[clinic input]
+test_preprocessor_guarded_if_with_continuation
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_if_with_continuation_impl(PyObject *module)
+/*[clinic end generated code: output=3d0712ca9e2d15b9 input=4a956fd91be30284]*/
+#endif
+
+#if CONDITION_E || CONDITION_F
+#warning "different type of CPP directive"
+/*[clinic input]
+test_preprocessor_guarded_if_e_or_f
+Makes sure cpp.Monitor handles other directives than preprocessor conditionals.
+[clinic start generated code]*/
+
+static PyObject *
+test_preprocessor_guarded_if_e_or_f_impl(PyObject *module)
+/*[clinic end generated code: output=e49d24ff64ad88bc input=57b9c37f938bc4f1]*/
+#endif
+
+/*[clinic input]
+dump buffer
+output pop
+[clinic start generated code]*/
+
+#if defined(CONDITION_A)
+
+PyDoc_STRVAR(test_preprocessor_guarded_condition_a__doc__,
+"test_preprocessor_guarded_condition_a($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF    \
+    {"test_preprocessor_guarded_condition_a", (PyCFunction)test_preprocessor_guarded_condition_a, METH_NOARGS, test_preprocessor_guarded_condition_a__doc__},
+
+static PyObject *
+test_preprocessor_guarded_condition_a(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_condition_a_impl(module);
+}
+
+#endif /* defined(CONDITION_A) */
+
+#if !defined(CONDITION_A) && (CONDITION_B)
+
+PyDoc_STRVAR(test_preprocessor_guarded_elif_condition_b__doc__,
+"test_preprocessor_guarded_elif_condition_b($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF    \
+    {"test_preprocessor_guarded_elif_condition_b", (PyCFunction)test_preprocessor_guarded_elif_condition_b, METH_NOARGS, test_preprocessor_guarded_elif_condition_b__doc__},
+
+static PyObject *
+test_preprocessor_guarded_elif_condition_b(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_elif_condition_b_impl(module);
+}
+
+#endif /* !defined(CONDITION_A) && (CONDITION_B) */
+
+#if !defined(CONDITION_A) && !(CONDITION_B)
+
+PyDoc_STRVAR(test_preprocessor_guarded_else__doc__,
+"test_preprocessor_guarded_else($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF    \
+    {"test_preprocessor_guarded_else", (PyCFunction)test_preprocessor_guarded_else, METH_NOARGS, test_preprocessor_guarded_else__doc__},
+
+static PyObject *
+test_preprocessor_guarded_else(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_else_impl(module);
+}
+
+#endif /* !defined(CONDITION_A) && !(CONDITION_B) */
+
+#if !defined(CONDITION_C)
+
+PyDoc_STRVAR(test_preprocessor_guarded_ifndef_condition_c__doc__,
+"test_preprocessor_guarded_ifndef_condition_c($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PREPROCESSOR_GUARDED_IFNDEF_CONDITION_C_METHODDEF    \
+    {"test_preprocessor_guarded_ifndef_condition_c", (PyCFunction)test_preprocessor_guarded_ifndef_condition_c, METH_NOARGS, test_preprocessor_guarded_ifndef_condition_c__doc__},
+
+static PyObject *
+test_preprocessor_guarded_ifndef_condition_c(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_ifndef_condition_c_impl(module);
+}
+
+#endif /* !defined(CONDITION_C) */
+
+#if defined(CONDITION_C)
+
+PyDoc_STRVAR(test_preprocessor_guarded_ifndef_not_condition_c__doc__,
+"test_preprocessor_guarded_ifndef_not_condition_c($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PREPROCESSOR_GUARDED_IFNDEF_NOT_CONDITION_C_METHODDEF    \
+    {"test_preprocessor_guarded_ifndef_not_condition_c", (PyCFunction)test_preprocessor_guarded_ifndef_not_condition_c, METH_NOARGS, test_preprocessor_guarded_ifndef_not_condition_c__doc__},
+
+static PyObject *
+test_preprocessor_guarded_ifndef_not_condition_c(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_ifndef_not_condition_c_impl(module);
+}
+
+#endif /* defined(CONDITION_C) */
+
+#if (CONDITION_D)
+
+PyDoc_STRVAR(test_preprocessor_guarded_if_with_continuation__doc__,
+"test_preprocessor_guarded_if_with_continuation($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_PREPROCESSOR_GUARDED_IF_WITH_CONTINUATION_METHODDEF    \
+    {"test_preprocessor_guarded_if_with_continuation", (PyCFunction)test_preprocessor_guarded_if_with_continuation, METH_NOARGS, test_preprocessor_guarded_if_with_continuation__doc__},
+
+static PyObject *
+test_preprocessor_guarded_if_with_continuation(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_if_with_continuation_impl(module);
+}
+
+#endif /* (CONDITION_D) */
+
+#if (CONDITION_E || CONDITION_F)
+
+PyDoc_STRVAR(test_preprocessor_guarded_if_e_or_f__doc__,
+"test_preprocessor_guarded_if_e_or_f($module, /)\n"
+"--\n"
+"\n"
+"Makes sure cpp.Monitor handles other directives than preprocessor conditionals.");
+
+#define TEST_PREPROCESSOR_GUARDED_IF_E_OR_F_METHODDEF    \
+    {"test_preprocessor_guarded_if_e_or_f", (PyCFunction)test_preprocessor_guarded_if_e_or_f, METH_NOARGS, test_preprocessor_guarded_if_e_or_f__doc__},
+
+static PyObject *
+test_preprocessor_guarded_if_e_or_f(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_preprocessor_guarded_if_e_or_f_impl(module);
+}
+
+#endif /* (CONDITION_E || CONDITION_F) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_CONDITION_A_METHODDEF) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_ELIF_CONDITION_B_METHODDEF) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_ELSE_METHODDEF) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_IFNDEF_CONDITION_C_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_IFNDEF_CONDITION_C_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_IFNDEF_CONDITION_C_METHODDEF) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_IFNDEF_NOT_CONDITION_C_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_IFNDEF_NOT_CONDITION_C_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_IFNDEF_NOT_CONDITION_C_METHODDEF) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_IF_WITH_CONTINUATION_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_IF_WITH_CONTINUATION_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_IF_WITH_CONTINUATION_METHODDEF) */
+
+#ifndef TEST_PREPROCESSOR_GUARDED_IF_E_OR_F_METHODDEF
+    #define TEST_PREPROCESSOR_GUARDED_IF_E_OR_F_METHODDEF
+#endif /* !defined(TEST_PREPROCESSOR_GUARDED_IF_E_OR_F_METHODDEF) */
+/*[clinic end generated code: output=fcfae7cac7a99e62 input=3fc80c9989d2f2e1]*/
+
+/*[clinic input]
+test_vararg_and_posonly
+
+
+    a: object
+    *args: object
+    /
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_vararg_and_posonly__doc__,
+"test_vararg_and_posonly($module, a, /, *args)\n"
+"--\n"
+"\n");
+
+#define TEST_VARARG_AND_POSONLY_METHODDEF    \
+    {"test_vararg_and_posonly", _PyCFunction_CAST(test_vararg_and_posonly), METH_FASTCALL, test_vararg_and_posonly__doc__},
+
+static PyObject *
+test_vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args);
+
+static PyObject *
+test_vararg_and_posonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *__clinic_args = NULL;
+
+    if (!_PyArg_CheckPositional("test_vararg_and_posonly", nargs, 1, PY_SSIZE_T_MAX)) {
+        goto exit;
+    }
+    a = args[0];
+    __clinic_args = PyTuple_New(nargs - 1);
+    if (!__clinic_args) {
+        goto exit;
+    }
+    for (Py_ssize_t i = 0; i < nargs - 1; ++i) {
+        PyTuple_SET_ITEM(__clinic_args, i, Py_NewRef(args[1 + i]));
+    }
+    return_value = test_vararg_and_posonly_impl(module, a, __clinic_args);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
+static PyObject *
+test_vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args)
+/*[clinic end generated code: output=79b75dc07decc8d6 input=08dc2bf7afbf1613]*/
+
+/*[clinic input]
+test_vararg
+
+
+    a: object
+    *args: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_vararg__doc__,
+"test_vararg($module, /, a, *args)\n"
+"--\n"
+"\n");
+
+#define TEST_VARARG_METHODDEF    \
+    {"test_vararg", _PyCFunction_CAST(test_vararg), METH_FASTCALL|METH_KEYWORDS, test_vararg__doc__},
+
+static PyObject *
+test_vararg_impl(PyObject *module, PyObject *a, PyObject *args);
+
+static PyObject *
+test_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_vararg",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *__clinic_args = NULL;
+
+    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    __clinic_args = args[1];
+    return_value = test_vararg_impl(module, a, __clinic_args);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
+static PyObject *
+test_vararg_impl(PyObject *module, PyObject *a, PyObject *args)
+/*[clinic end generated code: output=880365c61ae205d7 input=81d33815ad1bae6e]*/
+
+/*[clinic input]
+test_vararg_with_default
+
+
+    a: object
+    *args: object
+    b: bool = False
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_vararg_with_default__doc__,
+"test_vararg_with_default($module, /, a, *args, b=False)\n"
+"--\n"
+"\n");
+
+#define TEST_VARARG_WITH_DEFAULT_METHODDEF    \
+    {"test_vararg_with_default", _PyCFunction_CAST(test_vararg_with_default), METH_FASTCALL|METH_KEYWORDS, test_vararg_with_default__doc__},
+
+static PyObject *
+test_vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
+                              int b);
+
+static PyObject *
+test_vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_vararg_with_default",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *__clinic_args = NULL;
+    int b = 0;
+
+    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    __clinic_args = args[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    b = PyObject_IsTrue(args[2]);
+    if (b < 0) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    return_value = test_vararg_with_default_impl(module, a, __clinic_args, b);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
+static PyObject *
+test_vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
+                              int b)
+/*[clinic end generated code: output=291e9a5a09831128 input=6e110b54acd9b22d]*/
+
+/*[clinic input]
+test_vararg_with_only_defaults
+
+
+    *args: object
+    b: bool = False
+    c: object = ' '
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_vararg_with_only_defaults__doc__,
+"test_vararg_with_only_defaults($module, /, *args, b=False, c=\' \')\n"
+"--\n"
+"\n");
+
+#define TEST_VARARG_WITH_ONLY_DEFAULTS_METHODDEF    \
+    {"test_vararg_with_only_defaults", _PyCFunction_CAST(test_vararg_with_only_defaults), METH_FASTCALL|METH_KEYWORDS, test_vararg_with_only_defaults__doc__},
+
+static PyObject *
+test_vararg_with_only_defaults_impl(PyObject *module, PyObject *args, int b,
+                                    PyObject *c);
+
+static PyObject *
+test_vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_vararg_with_only_defaults",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *__clinic_args = NULL;
+    int b = 0;
+    PyObject *c = " ";
+
+    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 0, 0, 0, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    __clinic_args = args[0];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[1]) {
+        b = PyObject_IsTrue(args[1]);
+        if (b < 0) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    c = args[2];
+skip_optional_kwonly:
+    return_value = test_vararg_with_only_defaults_impl(module, __clinic_args, b, c);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
+static PyObject *
+test_vararg_with_only_defaults_impl(PyObject *module, PyObject *args, int b,
+                                    PyObject *c)
+/*[clinic end generated code: output=dd21b28f0db26a4b input=fa56a709a035666e]*/
+
+/*[clinic input]
+test_paramname_module
+
+    module as mod: object
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_paramname_module__doc__,
+"test_paramname_module($module, /, module)\n"
+"--\n"
+"\n");
+
+#define TEST_PARAMNAME_MODULE_METHODDEF    \
+    {"test_paramname_module", _PyCFunction_CAST(test_paramname_module), METH_FASTCALL|METH_KEYWORDS, test_paramname_module__doc__},
+
+static PyObject *
+test_paramname_module_impl(PyObject *module, PyObject *mod);
+
+static PyObject *
+test_paramname_module(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(module), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"module", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "test_paramname_module",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject *mod;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    mod = args[0];
+    return_value = test_paramname_module_impl(module, mod);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_paramname_module_impl(PyObject *module, PyObject *mod)
+/*[clinic end generated code: output=4a2a849ecbcc8b53 input=afefe259667f13ba]*/
+
+/*[clinic input]
+mangle1
+
+    args: object
+    kwnames: object
+    return_value: object
+    _keywords: object
+    _parser: object
+    argsbuf: object
+    fastargs: object
+    nargs: object
+    noptargs: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(mangle1__doc__,
+"mangle1($module, /, args, kwnames, return_value, _keywords, _parser,\n"
+"        argsbuf, fastargs, nargs, noptargs)\n"
+"--\n"
+"\n");
+
+#define MANGLE1_METHODDEF    \
+    {"mangle1", _PyCFunction_CAST(mangle1), METH_FASTCALL|METH_KEYWORDS, mangle1__doc__},
+
+static PyObject *
+mangle1_impl(PyObject *module, PyObject *args, PyObject *kwnames,
+             PyObject *return_value, PyObject *_keywords, PyObject *_parser,
+             PyObject *argsbuf, PyObject *fastargs, PyObject *nargs,
+             PyObject *noptargs);
+
+static PyObject *
+mangle1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 9
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(args), &_Py_ID(kwnames), &_Py_ID(return_value), &_Py_ID(_keywords), &_Py_ID(_parser), &_Py_ID(argsbuf), &_Py_ID(fastargs), &_Py_ID(nargs), &_Py_ID(noptargs), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"args", "kwnames", "return_value", "_keywords", "_parser", "argsbuf", "fastargs", "nargs", "noptargs", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "mangle1",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[9];
+    PyObject *__clinic_args;
+    PyObject *__clinic_kwnames;
+    PyObject *__clinic_return_value;
+    PyObject *__clinic__keywords;
+    PyObject *__clinic__parser;
+    PyObject *__clinic_argsbuf;
+    PyObject *__clinic_fastargs;
+    PyObject *__clinic_nargs;
+    PyObject *__clinic_noptargs;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 9, 9, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    __clinic_args = args[0];
+    __clinic_kwnames = args[1];
+    __clinic_return_value = args[2];
+    __clinic__keywords = args[3];
+    __clinic__parser = args[4];
+    __clinic_argsbuf = args[5];
+    __clinic_fastargs = args[6];
+    __clinic_nargs = args[7];
+    __clinic_noptargs = args[8];
+    return_value = mangle1_impl(module, __clinic_args, __clinic_kwnames, __clinic_return_value, __clinic__keywords, __clinic__parser, __clinic_argsbuf, __clinic_fastargs, __clinic_nargs, __clinic_noptargs);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+mangle1_impl(PyObject *module, PyObject *args, PyObject *kwnames,
+             PyObject *return_value, PyObject *_keywords, PyObject *_parser,
+             PyObject *argsbuf, PyObject *fastargs, PyObject *nargs,
+             PyObject *noptargs)
+/*[clinic end generated code: output=083e5076be9987c3 input=a3ed51bdedf8a3c7]*/
+
+/*[clinic input]
+mangle2
+
+    args: object
+    kwargs: object
+    return_value: object
+
+[clinic start generated code]*/
+
+PyDoc_STRVAR(mangle2__doc__,
+"mangle2($module, /, args, kwargs, return_value)\n"
+"--\n"
+"\n");
+
+#define MANGLE2_METHODDEF    \
+    {"mangle2", _PyCFunction_CAST(mangle2), METH_FASTCALL|METH_KEYWORDS, mangle2__doc__},
+
+static PyObject *
+mangle2_impl(PyObject *module, PyObject *args, PyObject *kwargs,
+             PyObject *return_value);
+
+static PyObject *
+mangle2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(args), &_Py_ID(kwargs), &_Py_ID(return_value), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"args", "kwargs", "return_value", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "mangle2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    PyObject *__clinic_args;
+    PyObject *__clinic_kwargs;
+    PyObject *__clinic_return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    __clinic_args = args[0];
+    __clinic_kwargs = args[1];
+    __clinic_return_value = args[2];
+    return_value = mangle2_impl(module, __clinic_args, __clinic_kwargs, __clinic_return_value);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+mangle2_impl(PyObject *module, PyObject *args, PyObject *kwargs,
+             PyObject *return_value)
+/*[clinic end generated code: output=2ebb62aaefe7590a input=391766fee51bad7a]*/
+
+
+/*[clinic input]
+Test.cls_with_param
+    cls: defining_class
+    /
+    a: int
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_cls_with_param__doc__,
+"cls_with_param($self, /, a)\n"
+"--\n"
+"\n");
+
+#define TEST_CLS_WITH_PARAM_METHODDEF    \
+    {"cls_with_param", _PyCFunction_CAST(Test_cls_with_param), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, Test_cls_with_param__doc__},
+
+static PyObject *
+Test_cls_with_param_impl(TestObj *self, PyTypeObject *cls, int a);
+
+static PyObject *
+Test_cls_with_param(TestObj *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "cls_with_param",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int a;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = PyLong_AsInt(args[0]);
+    if (a == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = Test_cls_with_param_impl(self, cls, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+Test_cls_with_param_impl(TestObj *self, PyTypeObject *cls, int a)
+/*[clinic end generated code: output=d89b99e83d442be0 input=af158077bd237ef9]*/
+
+
+/*[clinic input]
+Test.__init__
+Empty init method.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test___init____doc__,
+"Test()\n"
+"--\n"
+"\n"
+"Empty init method.");
+
+static int
+Test___init___impl(TestObj *self);
+
+static int
+Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    PyTypeObject *base_tp = TestType;
+
+    if ((Py_IS_TYPE(self, base_tp) ||
+         Py_TYPE(self)->tp_new == base_tp->tp_new) &&
+        !_PyArg_NoPositional("Test", args)) {
+        goto exit;
+    }
+    if ((Py_IS_TYPE(self, base_tp) ||
+         Py_TYPE(self)->tp_new == base_tp->tp_new) &&
+        !_PyArg_NoKeywords("Test", kwargs)) {
+        goto exit;
+    }
+    return_value = Test___init___impl((TestObj *)self);
+
+exit:
+    return return_value;
+}
+
+static int
+Test___init___impl(TestObj *self)
+/*[clinic end generated code: output=f6a35c85bc5b408f input=4ea79fee54d0c3ff]*/
+
+
+/*[clinic input]
+@classmethod
+Test.__new__
+Empty new method.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test__doc__,
+"Test()\n"
+"--\n"
+"\n"
+"Empty new method.");
+
+static PyObject *
+Test_impl(PyTypeObject *type);
+
+static PyObject *
+Test(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    PyTypeObject *base_tp = TestType;
+
+    if ((type == base_tp || type->tp_init == base_tp->tp_init) &&
+        !_PyArg_NoPositional("Test", args)) {
+        goto exit;
+    }
+    if ((type == base_tp || type->tp_init == base_tp->tp_init) &&
+        !_PyArg_NoKeywords("Test", kwargs)) {
+        goto exit;
+    }
+    return_value = Test_impl(type);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+Test_impl(PyTypeObject *type)
+/*[clinic end generated code: output=68a117adc057940f input=6fe98a19f097907f]*/
+
+
+/*[clinic input]
+Test.cls_no_params
+    cls: defining_class
+    /
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_cls_no_params__doc__,
+"cls_no_params($self, /)\n"
+"--\n"
+"\n");
+
+#define TEST_CLS_NO_PARAMS_METHODDEF    \
+    {"cls_no_params", _PyCFunction_CAST(Test_cls_no_params), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, Test_cls_no_params__doc__},
+
+static PyObject *
+Test_cls_no_params_impl(TestObj *self, PyTypeObject *cls);
+
+static PyObject *
+Test_cls_no_params(TestObj *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    if (nargs) {
+        PyErr_SetString(PyExc_TypeError, "cls_no_params() takes no arguments");
+        return NULL;
+    }
+    return Test_cls_no_params_impl(self, cls);
+}
+
+static PyObject *
+Test_cls_no_params_impl(TestObj *self, PyTypeObject *cls)
+/*[clinic end generated code: output=cc8845f22cff3dcb input=e7e2e4e344e96a11]*/
+
+
+/*[clinic input]
+Test.metho_not_default_return_converter -> int
+    a: object
+    /
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_metho_not_default_return_converter__doc__,
+"metho_not_default_return_converter($self, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_METHO_NOT_DEFAULT_RETURN_CONVERTER_METHODDEF    \
+    {"metho_not_default_return_converter", (PyCFunction)Test_metho_not_default_return_converter, METH_O, Test_metho_not_default_return_converter__doc__},
+
+static int
+Test_metho_not_default_return_converter_impl(TestObj *self, PyObject *a);
+
+static PyObject *
+Test_metho_not_default_return_converter(TestObj *self, PyObject *a)
+{
+    PyObject *return_value = NULL;
+    int _return_value;
+
+    _return_value = Test_metho_not_default_return_converter_impl(self, a);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+static int
+Test_metho_not_default_return_converter_impl(TestObj *self, PyObject *a)
+/*[clinic end generated code: output=3350de11bd538007 input=428657129b521177]*/
+
+
+/*[clinic input]
+Test.an_metho_arg_named_arg
+    arg: int
+        Name should be mangled to 'arg_' in generated output.
+    /
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_an_metho_arg_named_arg__doc__,
+"an_metho_arg_named_arg($self, arg, /)\n"
+"--\n"
+"\n"
+"\n"
+"\n"
+"  arg\n"
+"    Name should be mangled to \'arg_\' in generated output.");
+
+#define TEST_AN_METHO_ARG_NAMED_ARG_METHODDEF    \
+    {"an_metho_arg_named_arg", (PyCFunction)Test_an_metho_arg_named_arg, METH_O, Test_an_metho_arg_named_arg__doc__},
+
+static PyObject *
+Test_an_metho_arg_named_arg_impl(TestObj *self, int arg);
+
+static PyObject *
+Test_an_metho_arg_named_arg(TestObj *self, PyObject *arg_)
+{
+    PyObject *return_value = NULL;
+    int arg;
+
+    arg = PyLong_AsInt(arg_);
+    if (arg == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = Test_an_metho_arg_named_arg_impl(self, arg);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+Test_an_metho_arg_named_arg_impl(TestObj *self, int arg)
+/*[clinic end generated code: output=9f04de4a62287e28 input=2a53a57cf5624f95]*/
+
+
+/*[clinic input]
+Test.__init__
+    *args: object
+    /
+Varargs init method. For example, nargs is translated to PyTuple_GET_SIZE.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test___init____doc__,
+"Test(*args)\n"
+"--\n"
+"\n"
+"Varargs init method. For example, nargs is translated to PyTuple_GET_SIZE.");
+
+static int
+Test___init___impl(TestObj *self, PyObject *args);
+
+static int
+Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    PyTypeObject *base_tp = TestType;
+    PyObject *__clinic_args = NULL;
+
+    if ((Py_IS_TYPE(self, base_tp) ||
+         Py_TYPE(self)->tp_new == base_tp->tp_new) &&
+        !_PyArg_NoKeywords("Test", kwargs)) {
+        goto exit;
+    }
+    if (!_PyArg_CheckPositional("Test", PyTuple_GET_SIZE(args), 0, PY_SSIZE_T_MAX)) {
+        goto exit;
+    }
+    __clinic_args = PyTuple_GetSlice(0, -1);
+    return_value = Test___init___impl((TestObj *)self, __clinic_args);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
+static int
+Test___init___impl(TestObj *self, PyObject *args)
+/*[clinic end generated code: output=0ed1009fe0dcf98d input=96c3ddc0cd38fc0c]*/
+
+
+/*[clinic input]
+@classmethod
+Test.__new__
+    *args: object
+    /
+Varargs new method. For example, nargs is translated to PyTuple_GET_SIZE.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test__doc__,
+"Test(*args)\n"
+"--\n"
+"\n"
+"Varargs new method. For example, nargs is translated to PyTuple_GET_SIZE.");
+
+static PyObject *
+Test_impl(PyTypeObject *type, PyObject *args);
+
+static PyObject *
+Test(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    PyTypeObject *base_tp = TestType;
+    PyObject *__clinic_args = NULL;
+
+    if ((type == base_tp || type->tp_init == base_tp->tp_init) &&
+        !_PyArg_NoKeywords("Test", kwargs)) {
+        goto exit;
+    }
+    if (!_PyArg_CheckPositional("Test", PyTuple_GET_SIZE(args), 0, PY_SSIZE_T_MAX)) {
+        goto exit;
+    }
+    __clinic_args = PyTuple_GetSlice(0, -1);
+    return_value = Test_impl(type, __clinic_args);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
+static PyObject *
+Test_impl(PyTypeObject *type, PyObject *args)
+/*[clinic end generated code: output=8b219f6633e2a2e9 input=26a672e2e9750120]*/
+
+
+/*[clinic input]
+Test.__init__
+    a: object
+Init method with positional or keyword arguments.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test___init____doc__,
+"Test(a)\n"
+"--\n"
+"\n"
+"Init method with positional or keyword arguments.");
+
+static int
+Test___init___impl(TestObj *self, PyObject *a);
+
+static int
+Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "Test",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *a;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    a = fastargs[0];
+    return_value = Test___init___impl((TestObj *)self, a);
+
+exit:
+    return return_value;
+}
+
+static int
+Test___init___impl(TestObj *self, PyObject *a)
+/*[clinic end generated code: output=0b9ca79638ab3ecb input=a8f9222a6ab35c59]*/
+
+
+/*[clinic input]
+@classmethod
+Test.class_method
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_class_method__doc__,
+"class_method($type, /)\n"
+"--\n"
+"\n");
+
+#define TEST_CLASS_METHOD_METHODDEF    \
+    {"class_method", (PyCFunction)Test_class_method, METH_NOARGS|METH_CLASS, Test_class_method__doc__},
+
+static PyObject *
+Test_class_method_impl(PyTypeObject *type);
+
+static PyObject *
+Test_class_method(PyTypeObject *type, PyObject *Py_UNUSED(ignored))
+{
+    return Test_class_method_impl(type);
+}
+
+static PyObject *
+Test_class_method_impl(PyTypeObject *type)
+/*[clinic end generated code: output=47fb7ecca1abcaaa input=43bc4a0494547b80]*/
+
+
+/*[clinic input]
+@staticmethod
+Test.static_method
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_static_method__doc__,
+"static_method()\n"
+"--\n"
+"\n");
+
+#define TEST_STATIC_METHOD_METHODDEF    \
+    {"static_method", (PyCFunction)Test_static_method, METH_NOARGS|METH_STATIC, Test_static_method__doc__},
+
+static PyObject *
+Test_static_method_impl();
+
+static PyObject *
+Test_static_method(void *null, PyObject *Py_UNUSED(ignored))
+{
+    return Test_static_method_impl();
+}
+
+static PyObject *
+Test_static_method_impl()
+/*[clinic end generated code: output=82524a63025cf7ab input=dae892fac55ae72b]*/
+
+
+/*[clinic input]
+@coexist
+Test.meth_coexist
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_meth_coexist__doc__,
+"meth_coexist($self, /)\n"
+"--\n"
+"\n");
+
+#define TEST_METH_COEXIST_METHODDEF    \
+    {"meth_coexist", (PyCFunction)Test_meth_coexist, METH_NOARGS|METH_COEXIST, Test_meth_coexist__doc__},
+
+static PyObject *
+Test_meth_coexist_impl(TestObj *self);
+
+static PyObject *
+Test_meth_coexist(TestObj *self, PyObject *Py_UNUSED(ignored))
+{
+    return Test_meth_coexist_impl(self);
+}
+
+static PyObject *
+Test_meth_coexist_impl(TestObj *self)
+/*[clinic end generated code: output=808a293d0cd27439 input=2a1d75b5e6fec6dd]*/
+
+/*[clinic input]
+@getter
+Test.property
+[clinic start generated code]*/
+
+#define TEST_PROPERTY_GETTERDEF    \
+    {"property", (getter)Test_property_get, NULL, NULL},
+
+static PyObject *
+Test_property_get_impl(TestObj *self);
+
+static PyObject *
+Test_property_get(TestObj *self, void *Py_UNUSED(context))
+{
+    return Test_property_get_impl(self);
+}
+
+static PyObject *
+Test_property_get_impl(TestObj *self)
+/*[clinic end generated code: output=892b6fb351ff85fd input=2d92b3449fbc7d2b]*/
+
+
+/*[clinic input]
+output push
+output preset buffer
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=5bff3376ee0df0b5]*/
+
+/*[clinic input]
+buffer_clear
+  a: int
+We'll call 'destination buffer clear' after this.
+
+Argument Clinic's buffer preset puts most generated code into the
+'buffer' destination, except from 'impl_definition', which is put into
+the 'block' destination, so we should expect everything but
+'impl_definition' to be cleared.
+[clinic start generated code]*/
+
+static PyObject *
+buffer_clear_impl(PyObject *module, int a)
+/*[clinic end generated code: output=f14bba74677e1846 input=a4c308a6fdab043c]*/
+
+/*[clinic input]
+destination buffer clear
+output pop
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=f20d06adb8252084]*/
+
+
+/*[clinic input]
+output push
+destination test1 new buffer
+output everything suppress
+output docstring_definition test1
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=5a77c454970992fc]*/
+
+/*[clinic input]
+new_dest
+  a: int
+Only this docstring should be outputted to test1.
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=da5af421ed8996ed]*/
+
+/*[clinic input]
+dump test1
+output pop
+[clinic start generated code]*/
+
+PyDoc_STRVAR(new_dest__doc__,
+"new_dest($module, /, a)\n"
+"--\n"
+"\n"
+"Only this docstring should be outputted to test1.");
+/*[clinic end generated code: output=9cac703f51d90e84 input=090db8df4945576d]*/
+
+
+/*[clinic input]
+mangled_c_keyword_identifier
+    i as int: int
+The 'int' param should be mangled as 'int_value'
+[clinic start generated code]*/
+
+PyDoc_STRVAR(mangled_c_keyword_identifier__doc__,
+"mangled_c_keyword_identifier($module, /, i)\n"
+"--\n"
+"\n"
+"The \'int\' param should be mangled as \'int_value\'");
+
+#define MANGLED_C_KEYWORD_IDENTIFIER_METHODDEF    \
+    {"mangled_c_keyword_identifier", _PyCFunction_CAST(mangled_c_keyword_identifier), METH_FASTCALL|METH_KEYWORDS, mangled_c_keyword_identifier__doc__},
+
+static PyObject *
+mangled_c_keyword_identifier_impl(PyObject *module, int int_value);
+
+static PyObject *
+mangled_c_keyword_identifier(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(i), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"i", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "mangled_c_keyword_identifier",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int int_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    int_value = PyLong_AsInt(args[0]);
+    if (int_value == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = mangled_c_keyword_identifier_impl(module, int_value);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+mangled_c_keyword_identifier_impl(PyObject *module, int int_value)
+/*[clinic end generated code: output=f24b37e0368e0eb8 input=060876448ab567a2]*/
+
+
+/*[clinic input]
+bool_return -> bool
+[clinic start generated code]*/
+
+PyDoc_STRVAR(bool_return__doc__,
+"bool_return($module, /)\n"
+"--\n"
+"\n");
+
+#define BOOL_RETURN_METHODDEF    \
+    {"bool_return", (PyCFunction)bool_return, METH_NOARGS, bool_return__doc__},
+
+static int
+bool_return_impl(PyObject *module);
+
+static PyObject *
+bool_return(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *return_value = NULL;
+    int _return_value;
+
+    _return_value = bool_return_impl(module);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+static int
+bool_return_impl(PyObject *module)
+/*[clinic end generated code: output=3a65f07830e48e98 input=93ba95d39ee98f39]*/
+
+
+/*[clinic input]
+double_return -> double
+[clinic start generated code]*/
+
+PyDoc_STRVAR(double_return__doc__,
+"double_return($module, /)\n"
+"--\n"
+"\n");
+
+#define DOUBLE_RETURN_METHODDEF    \
+    {"double_return", (PyCFunction)double_return, METH_NOARGS, double_return__doc__},
+
+static double
+double_return_impl(PyObject *module);
+
+static PyObject *
+double_return(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *return_value = NULL;
+    double _return_value;
+
+    _return_value = double_return_impl(module);
+    if ((_return_value == -1.0) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyFloat_FromDouble(_return_value);
+
+exit:
+    return return_value;
+}
+
+static double
+double_return_impl(PyObject *module)
+/*[clinic end generated code: output=076dc72595d3f66d input=da11b6255e4cbfd7]*/
+
+
+/*[clinic input]
+Test.__init__
+    a: object
+    [
+    b: object
+    ]
+    /
+Should generate two PyArg_ParseTuple calls.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test___init____doc__,
+"Test(a, [b])\n"
+"Should generate two PyArg_ParseTuple calls.");
+
+static int
+Test___init___impl(TestObj *self, PyObject *a, int group_right_1,
+                   PyObject *b);
+
+static int
+Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    PyTypeObject *base_tp = TestType;
+    PyObject *a;
+    int group_right_1 = 0;
+    PyObject *b = NULL;
+
+    if ((Py_IS_TYPE(self, base_tp) ||
+         Py_TYPE(self)->tp_new == base_tp->tp_new) &&
+        !_PyArg_NoKeywords("Test", kwargs)) {
+        goto exit;
+    }
+    switch (PyTuple_GET_SIZE(args)) {
+        case 1:
+            if (!PyArg_ParseTuple(args, "O:__init__", &a)) {
+                goto exit;
+            }
+            break;
+        case 2:
+            if (!PyArg_ParseTuple(args, "OO:__init__", &a, &b)) {
+                goto exit;
+            }
+            group_right_1 = 1;
+            break;
+        default:
+            PyErr_SetString(PyExc_TypeError, "Test.__init__ requires 1 to 2 arguments");
+            goto exit;
+    }
+    return_value = Test___init___impl((TestObj *)self, a, group_right_1, b);
+
+exit:
+    return return_value;
+}
+
+static int
+Test___init___impl(TestObj *self, PyObject *a, int group_right_1,
+                   PyObject *b)
+/*[clinic end generated code: output=2bbb8ea60e8f57a6 input=10f5d0f1e8e466ef]*/
+
+
+/*[clinic input]
+Test._pyarg_parsestackandkeywords
+    cls: defining_class
+    key: str(accept={str, robuffer}, zeroes=True)
+    /
+Check that _PyArg_ParseStackAndKeywords() is generated.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test__pyarg_parsestackandkeywords__doc__,
+"_pyarg_parsestackandkeywords($self, key, /)\n"
+"--\n"
+"\n"
+"Check that _PyArg_ParseStackAndKeywords() is generated.");
+
+#define TEST__PYARG_PARSESTACKANDKEYWORDS_METHODDEF    \
+    {"_pyarg_parsestackandkeywords", _PyCFunction_CAST(Test__pyarg_parsestackandkeywords), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, Test__pyarg_parsestackandkeywords__doc__},
+
+static PyObject *
+Test__pyarg_parsestackandkeywords_impl(TestObj *self, PyTypeObject *cls,
+                                       const char *key,
+                                       Py_ssize_t key_length);
+
+static PyObject *
+Test__pyarg_parsestackandkeywords(TestObj *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+    #  define KWTUPLE (PyObject *)&_Py_SINGLETON(tuple_empty)
+    #else
+    #  define KWTUPLE NULL
+    #endif
+
+    static const char * const _keywords[] = {"", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .format = "s#:_pyarg_parsestackandkeywords",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    const char *key;
+    Py_ssize_t key_length;
+
+    if (!_PyArg_ParseStackAndKeywords(args, nargs, kwnames, &_parser,
+        &key, &key_length)) {
+        goto exit;
+    }
+    return_value = Test__pyarg_parsestackandkeywords_impl(self, cls, key, key_length);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+Test__pyarg_parsestackandkeywords_impl(TestObj *self, PyTypeObject *cls,
+                                       const char *key,
+                                       Py_ssize_t key_length)
+/*[clinic end generated code: output=4fda8a7f2547137c input=fc72ef4b4cfafabc]*/
+
+
+/*[clinic input]
+Test.__init__ -> long
+Test overriding the __init__ return converter
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test___init____doc__,
+"Test()\n"
+"--\n"
+"\n"
+"Test overriding the __init__ return converter");
+
+static long
+Test___init___impl(TestObj *self);
+
+static int
+Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    PyTypeObject *base_tp = TestType;
+    long _return_value;
+
+    if ((Py_IS_TYPE(self, base_tp) ||
+         Py_TYPE(self)->tp_new == base_tp->tp_new) &&
+        !_PyArg_NoPositional("Test", args)) {
+        goto exit;
+    }
+    if ((Py_IS_TYPE(self, base_tp) ||
+         Py_TYPE(self)->tp_new == base_tp->tp_new) &&
+        !_PyArg_NoKeywords("Test", kwargs)) {
+        goto exit;
+    }
+    _return_value = Test___init___impl((TestObj *)self);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong(_return_value);
+
+exit:
+    return return_value;
+}
+
+static long
+Test___init___impl(TestObj *self)
+/*[clinic end generated code: output=daf6ee12c4e443fb input=311af0dc7f17e8e9]*/
+
+
+/*[clinic input]
+fn_with_default_binop_expr
+    arg: object(c_default='CONST_A + CONST_B') = a+b
+[clinic start generated code]*/
+
+PyDoc_STRVAR(fn_with_default_binop_expr__doc__,
+"fn_with_default_binop_expr($module, /, arg=a+b)\n"
+"--\n"
+"\n");
+
+#define FN_WITH_DEFAULT_BINOP_EXPR_METHODDEF    \
+    {"fn_with_default_binop_expr", _PyCFunction_CAST(fn_with_default_binop_expr), METH_FASTCALL|METH_KEYWORDS, fn_with_default_binop_expr__doc__},
+
+static PyObject *
+fn_with_default_binop_expr_impl(PyObject *module, PyObject *arg);
+
+static PyObject *
+fn_with_default_binop_expr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(arg), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"arg", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "fn_with_default_binop_expr",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *arg = CONST_A + CONST_B;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    arg = args[0];
+skip_optional_pos:
+    return_value = fn_with_default_binop_expr_impl(module, arg);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+fn_with_default_binop_expr_impl(PyObject *module, PyObject *arg)
+/*[clinic end generated code: output=018672772e4092ff input=1b55c8ae68d89453]*/
+
+
+/*[python input]
+class Custom_converter(CConverter):
+    type = "str"
+    default = "Hello!"
+    converter = "c_converter_func"
+[python start generated code]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=d612708f0efb8e3c]*/
+
+/*[clinic input]
+docstr_fallback_to_converter_default
+    a: Custom
+Check docstring default value fallback.
+
+Verify that the docstring formatter fetches the default
+value from the converter if no 'py_default' is found.
+The signature should have the default a='Hello!',
+as given by the Custom converter.
+[clinic start generated code]*/
+
+PyDoc_STRVAR(docstr_fallback_to_converter_default__doc__,
+"docstr_fallback_to_converter_default($module, /, a=\'Hello!\')\n"
+"--\n"
+"\n"
+"Check docstring default value fallback.\n"
+"\n"
+"Verify that the docstring formatter fetches the default\n"
+"value from the converter if no \'py_default\' is found.\n"
+"The signature should have the default a=\'Hello!\',\n"
+"as given by the Custom converter.");
+
+#define DOCSTR_FALLBACK_TO_CONVERTER_DEFAULT_METHODDEF    \
+    {"docstr_fallback_to_converter_default", _PyCFunction_CAST(docstr_fallback_to_converter_default), METH_FASTCALL|METH_KEYWORDS, docstr_fallback_to_converter_default__doc__},
+
+static PyObject *
+docstr_fallback_to_converter_default_impl(PyObject *module, str a);
+
+static PyObject *
+docstr_fallback_to_converter_default(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "docstr_fallback_to_converter_default",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    str a;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!c_converter_func(args[0], &a)) {
+        goto exit;
+    }
+    return_value = docstr_fallback_to_converter_default_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+docstr_fallback_to_converter_default_impl(PyObject *module, str a)
+/*[clinic end generated code: output=ae24a9c6f60ee8a6 input=0cbe6a4d24bc2274]*/
+
+
+/*[clinic input]
+@critical_section
+test_critical_section
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_critical_section__doc__,
+"test_critical_section($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_CRITICAL_SECTION_METHODDEF    \
+    {"test_critical_section", (PyCFunction)test_critical_section, METH_NOARGS, test_critical_section__doc__},
+
+static PyObject *
+test_critical_section_impl(PyObject *module);
+
+static PyObject *
+test_critical_section(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(module);
+    return_value = test_critical_section_impl(module);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+static PyObject *
+test_critical_section_impl(PyObject *module)
+/*[clinic end generated code: output=9d5a87bb28aa3f0c input=8c58956d6ff00f80]*/
+
+
+/*[clinic input]
+@critical_section
+test_critical_section_meth_o
+    a: object(subclass_of="&PyUnicode_Type")
+    /
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_critical_section_meth_o__doc__,
+"test_critical_section_meth_o($module, a, /)\n"
+"--\n"
+"\n");
+
+#define TEST_CRITICAL_SECTION_METH_O_METHODDEF    \
+    {"test_critical_section_meth_o", (PyCFunction)test_critical_section_meth_o, METH_O, test_critical_section_meth_o__doc__},
+
+static PyObject *
+test_critical_section_meth_o_impl(PyObject *module, PyObject *a);
+
+static PyObject *
+test_critical_section_meth_o(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("test_critical_section_meth_o", "argument", "str", arg);
+        goto exit;
+    }
+    a = arg;
+    Py_BEGIN_CRITICAL_SECTION(module);
+    return_value = test_critical_section_meth_o_impl(module, a);
+    Py_END_CRITICAL_SECTION();
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_critical_section_meth_o_impl(PyObject *module, PyObject *a)
+/*[clinic end generated code: output=7a9d7420802d1202 input=376533f51eceb6c3]*/
+
+/*[clinic input]
+@critical_section a
+test_critical_section_object
+    a: object(subclass_of="&PyUnicode_Type")
+    /
+test_critical_section_object
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_critical_section_object__doc__,
+"test_critical_section_object($module, a, /)\n"
+"--\n"
+"\n"
+"test_critical_section_object");
+
+#define TEST_CRITICAL_SECTION_OBJECT_METHODDEF    \
+    {"test_critical_section_object", (PyCFunction)test_critical_section_object, METH_O, test_critical_section_object__doc__},
+
+static PyObject *
+test_critical_section_object_impl(PyObject *module, PyObject *a);
+
+static PyObject *
+test_critical_section_object(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("test_critical_section_object", "argument", "str", arg);
+        goto exit;
+    }
+    a = arg;
+    Py_BEGIN_CRITICAL_SECTION(a);
+    return_value = test_critical_section_object_impl(module, a);
+    Py_END_CRITICAL_SECTION();
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_critical_section_object_impl(PyObject *module, PyObject *a)
+/*[clinic end generated code: output=ec06df92232b0fb5 input=6f67f91b523c875f]*/
+
+PyDoc_STRVAR(test_critical_section_object__doc__,
+"test_critical_section_object($module, a, /)\n"
+"--\n"
+"\n"
+"test_critical_section_object");
+
+#define TEST_CRITICAL_SECTION_OBJECT_METHODDEF    \
+    {"test_critical_section_object", (PyCFunction)test_critical_section_object, METH_O, test_critical_section_object__doc__},
+
+static PyObject *
+test_critical_section_object_impl(PyObject *module, PyObject *a);
+
+static PyObject *
+test_critical_section_object(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("test_critical_section_object", "argument", "str", arg);
+        goto exit;
+    }
+    a = arg;
+    Py_BEGIN_CRITICAL_SECTION(a);
+    return_value = test_critical_section_object_impl(module, a);
+    Py_END_CRITICAL_SECTION();
+
+exit:
+    return return_value;
+}
+
+/*[clinic input]
+@critical_section a b
+test_critical_section_object2
+    a: object(subclass_of="&PyUnicode_Type")
+    b: object(subclass_of="&PyUnicode_Type")
+    /
+test_critical_section_object2
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_critical_section_object2__doc__,
+"test_critical_section_object2($module, a, b, /)\n"
+"--\n"
+"\n"
+"test_critical_section_object2");
+
+#define TEST_CRITICAL_SECTION_OBJECT2_METHODDEF    \
+    {"test_critical_section_object2", _PyCFunction_CAST(test_critical_section_object2), METH_FASTCALL, test_critical_section_object2__doc__},
+
+static PyObject *
+test_critical_section_object2_impl(PyObject *module, PyObject *a,
+                                   PyObject *b);
+
+static PyObject *
+test_critical_section_object2(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *b;
+
+    if (!_PyArg_CheckPositional("test_critical_section_object2", nargs, 2, 2)) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("test_critical_section_object2", "argument 1", "str", args[0]);
+        goto exit;
+    }
+    a = args[0];
+    if (!PyUnicode_Check(args[1])) {
+        _PyArg_BadArgument("test_critical_section_object2", "argument 2", "str", args[1]);
+        goto exit;
+    }
+    b = args[1];
+    Py_BEGIN_CRITICAL_SECTION2(a, b);
+    return_value = test_critical_section_object2_impl(module, a, b);
+    Py_END_CRITICAL_SECTION2();
+
+exit:
+    return return_value;
+}
+
+static PyObject *
+test_critical_section_object2_impl(PyObject *module, PyObject *a,
+                                   PyObject *b)
+/*[clinic end generated code: output=d73a1657c18df17a input=638824e41419a466]*/
+
+PyDoc_STRVAR(test_critical_section_object2__doc__,
+"test_critical_section_object2($module, a, b, /)\n"
+"--\n"
+"\n"
+"test_critical_section_object2");
+
+#define TEST_CRITICAL_SECTION_OBJECT2_METHODDEF    \
+    {"test_critical_section_object2", _PyCFunction_CAST(test_critical_section_object2), METH_FASTCALL, test_critical_section_object2__doc__},
+
+static PyObject *
+test_critical_section_object2_impl(PyObject *module, PyObject *a,
+                                   PyObject *b);
+
+static PyObject *
+test_critical_section_object2(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *a;
+    PyObject *b;
+
+    if (!_PyArg_CheckPositional("test_critical_section_object2", nargs, 2, 2)) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("test_critical_section_object2", "argument 1", "str", args[0]);
+        goto exit;
+    }
+    a = args[0];
+    if (!PyUnicode_Check(args[1])) {
+        _PyArg_BadArgument("test_critical_section_object2", "argument 2", "str", args[1]);
+        goto exit;
+    }
+    b = args[1];
+    Py_BEGIN_CRITICAL_SECTION2(a, b);
+    return_value = test_critical_section_object2_impl(module, a, b);
+    Py_END_CRITICAL_SECTION2();
+
+exit:
+    return return_value;
+}
diff --git a/Lib/test/cfgparser.1 b/Lib/test/configdata/cfgparser.1
similarity index 100%
rename from Lib/test/cfgparser.1
rename to Lib/test/configdata/cfgparser.1
diff --git a/Lib/test/cfgparser.2 b/Lib/test/configdata/cfgparser.2
similarity index 100%
rename from Lib/test/cfgparser.2
rename to Lib/test/configdata/cfgparser.2
diff --git a/Lib/test/cfgparser.3 b/Lib/test/configdata/cfgparser.3
similarity index 100%
rename from Lib/test/cfgparser.3
rename to Lib/test/configdata/cfgparser.3
diff --git a/Lib/test/cov.py b/Lib/test/cov.py
new file mode 100644
index 00000000000000..e4699c7afe174a
--- /dev/null
+++ b/Lib/test/cov.py
@@ -0,0 +1,48 @@
+"""A minimal hook for gathering line coverage of the standard library.
+
+Designed to be used with -Xpresite= which means:
+* it installs itself on import
+* it's not imported as `__main__` so can't use the ifmain idiom
+* it can't import anything besides `sys` to avoid tainting gathered coverage
+* filenames are not normalized
+
+To get gathered coverage back, look for 'test.cov' in `sys.modules`
+instead of importing directly. That way you can determine if the module
+was already in use.
+
+If you need to disable the hook, call the `disable()` function.
+"""
+
+import sys
+
+mon = sys.monitoring
+
+FileName = str
+LineNo = int
+Location = tuple[FileName, LineNo]
+
+coverage: set[Location] = set()
+
+
+# `types` and `typing` aren't imported to avoid invalid coverage
+def add_line(
+    code: "types.CodeType",
+    lineno: int,
+) -> "typing.Literal[sys.monitoring.DISABLE]":
+    coverage.add((code.co_filename, lineno))
+    return mon.DISABLE
+
+
+def enable():
+    mon.use_tool_id(mon.COVERAGE_ID, "regrtest coverage")
+    mon.register_callback(mon.COVERAGE_ID, mon.events.LINE, add_line)
+    mon.set_events(mon.COVERAGE_ID, mon.events.LINE)
+
+
+def disable():
+    mon.set_events(mon.COVERAGE_ID, 0)
+    mon.register_callback(mon.COVERAGE_ID, mon.events.LINE, None)
+    mon.free_tool_id(mon.COVERAGE_ID)
+
+
+enable()
diff --git a/Lib/test/datetimetester.py b/Lib/test/datetimetester.py
index 55e061950ff280..8bda17358db87f 100644
--- a/Lib/test/datetimetester.py
+++ b/Lib/test/datetimetester.py
@@ -1699,22 +1699,23 @@ def test_replace(self):
         cls = self.theclass
         args = [1, 2, 3]
         base = cls(*args)
-        self.assertEqual(base, base.replace())
+        self.assertEqual(base.replace(), base)
+        self.assertEqual(copy.replace(base), base)
 
-        i = 0
-        for name, newval in (("year", 2),
-                             ("month", 3),
-                             ("day", 4)):
+        changes = (("year", 2),
+                   ("month", 3),
+                   ("day", 4))
+        for i, (name, newval) in enumerate(changes):
             newargs = args[:]
             newargs[i] = newval
             expected = cls(*newargs)
-            got = base.replace(**{name: newval})
-            self.assertEqual(expected, got)
-            i += 1
+            self.assertEqual(base.replace(**{name: newval}), expected)
+            self.assertEqual(copy.replace(base, **{name: newval}), expected)
 
         # Out of bounds.
         base = cls(2000, 2, 29)
         self.assertRaises(ValueError, base.replace, year=2001)
+        self.assertRaises(ValueError, copy.replace, base, year=2001)
 
     def test_subclass_replace(self):
         class DateSubclass(self.theclass):
@@ -1722,6 +1723,7 @@ class DateSubclass(self.theclass):
 
         dt = DateSubclass(2012, 1, 1)
         self.assertIs(type(dt.replace(year=2013)), DateSubclass)
+        self.assertIs(type(copy.replace(dt, year=2013)), DateSubclass)
 
     def test_subclass_date(self):
 
@@ -2856,26 +2858,27 @@ def test_replace(self):
         cls = self.theclass
         args = [1, 2, 3, 4, 5, 6, 7]
         base = cls(*args)
-        self.assertEqual(base, base.replace())
-
-        i = 0
-        for name, newval in (("year", 2),
-                             ("month", 3),
-                             ("day", 4),
-                             ("hour", 5),
-                             ("minute", 6),
-                             ("second", 7),
-                             ("microsecond", 8)):
+        self.assertEqual(base.replace(), base)
+        self.assertEqual(copy.replace(base), base)
+
+        changes = (("year", 2),
+                   ("month", 3),
+                   ("day", 4),
+                   ("hour", 5),
+                   ("minute", 6),
+                   ("second", 7),
+                   ("microsecond", 8))
+        for i, (name, newval) in enumerate(changes):
             newargs = args[:]
             newargs[i] = newval
             expected = cls(*newargs)
-            got = base.replace(**{name: newval})
-            self.assertEqual(expected, got)
-            i += 1
+            self.assertEqual(base.replace(**{name: newval}), expected)
+            self.assertEqual(copy.replace(base, **{name: newval}), expected)
 
         # Out of bounds.
         base = cls(2000, 2, 29)
         self.assertRaises(ValueError, base.replace, year=2001)
+        self.assertRaises(ValueError, copy.replace, base, year=2001)
 
     @support.run_with_tz('EDT4')
     def test_astimezone(self):
@@ -3671,19 +3674,19 @@ def test_replace(self):
         cls = self.theclass
         args = [1, 2, 3, 4]
         base = cls(*args)
-        self.assertEqual(base, base.replace())
-
-        i = 0
-        for name, newval in (("hour", 5),
-                             ("minute", 6),
-                             ("second", 7),
-                             ("microsecond", 8)):
+        self.assertEqual(base.replace(), base)
+        self.assertEqual(copy.replace(base), base)
+
+        changes = (("hour", 5),
+                   ("minute", 6),
+                   ("second", 7),
+                   ("microsecond", 8))
+        for i, (name, newval) in enumerate(changes):
             newargs = args[:]
             newargs[i] = newval
             expected = cls(*newargs)
-            got = base.replace(**{name: newval})
-            self.assertEqual(expected, got)
-            i += 1
+            self.assertEqual(base.replace(**{name: newval}), expected)
+            self.assertEqual(copy.replace(base, **{name: newval}), expected)
 
         # Out of bounds.
         base = cls(1)
@@ -3691,6 +3694,10 @@ def test_replace(self):
         self.assertRaises(ValueError, base.replace, minute=-1)
         self.assertRaises(ValueError, base.replace, second=100)
         self.assertRaises(ValueError, base.replace, microsecond=1000000)
+        self.assertRaises(ValueError, copy.replace, base, hour=24)
+        self.assertRaises(ValueError, copy.replace, base, minute=-1)
+        self.assertRaises(ValueError, copy.replace, base, second=100)
+        self.assertRaises(ValueError, copy.replace, base, microsecond=1000000)
 
     def test_subclass_replace(self):
         class TimeSubclass(self.theclass):
@@ -3698,6 +3705,7 @@ class TimeSubclass(self.theclass):
 
         ctime = TimeSubclass(12, 30)
         self.assertIs(type(ctime.replace(hour=10)), TimeSubclass)
+        self.assertIs(type(copy.replace(ctime, hour=10)), TimeSubclass)
 
     def test_subclass_time(self):
 
@@ -4085,31 +4093,37 @@ def test_replace(self):
         zm200 = FixedOffset(timedelta(minutes=-200), "-200")
         args = [1, 2, 3, 4, z100]
         base = cls(*args)
-        self.assertEqual(base, base.replace())
-
-        i = 0
-        for name, newval in (("hour", 5),
-                             ("minute", 6),
-                             ("second", 7),
-                             ("microsecond", 8),
-                             ("tzinfo", zm200)):
+        self.assertEqual(base.replace(), base)
+        self.assertEqual(copy.replace(base), base)
+
+        changes = (("hour", 5),
+                   ("minute", 6),
+                   ("second", 7),
+                   ("microsecond", 8),
+                   ("tzinfo", zm200))
+        for i, (name, newval) in enumerate(changes):
             newargs = args[:]
             newargs[i] = newval
             expected = cls(*newargs)
-            got = base.replace(**{name: newval})
-            self.assertEqual(expected, got)
-            i += 1
+            self.assertEqual(base.replace(**{name: newval}), expected)
+            self.assertEqual(copy.replace(base, **{name: newval}), expected)
 
         # Ensure we can get rid of a tzinfo.
         self.assertEqual(base.tzname(), "+100")
         base2 = base.replace(tzinfo=None)
         self.assertIsNone(base2.tzinfo)
         self.assertIsNone(base2.tzname())
+        base22 = copy.replace(base, tzinfo=None)
+        self.assertIsNone(base22.tzinfo)
+        self.assertIsNone(base22.tzname())
 
         # Ensure we can add one.
         base3 = base2.replace(tzinfo=z100)
         self.assertEqual(base, base3)
         self.assertIs(base.tzinfo, base3.tzinfo)
+        base32 = copy.replace(base22, tzinfo=z100)
+        self.assertEqual(base, base32)
+        self.assertIs(base.tzinfo, base32.tzinfo)
 
         # Out of bounds.
         base = cls(1)
@@ -4117,6 +4131,10 @@ def test_replace(self):
         self.assertRaises(ValueError, base.replace, minute=-1)
         self.assertRaises(ValueError, base.replace, second=100)
         self.assertRaises(ValueError, base.replace, microsecond=1000000)
+        self.assertRaises(ValueError, copy.replace, base, hour=24)
+        self.assertRaises(ValueError, copy.replace, base, minute=-1)
+        self.assertRaises(ValueError, copy.replace, base, second=100)
+        self.assertRaises(ValueError, copy.replace, base, microsecond=1000000)
 
     def test_mixed_compare(self):
         t1 = self.theclass(1, 2, 3)
@@ -4885,38 +4903,45 @@ def test_replace(self):
         zm200 = FixedOffset(timedelta(minutes=-200), "-200")
         args = [1, 2, 3, 4, 5, 6, 7, z100]
         base = cls(*args)
-        self.assertEqual(base, base.replace())
-
-        i = 0
-        for name, newval in (("year", 2),
-                             ("month", 3),
-                             ("day", 4),
-                             ("hour", 5),
-                             ("minute", 6),
-                             ("second", 7),
-                             ("microsecond", 8),
-                             ("tzinfo", zm200)):
+        self.assertEqual(base.replace(), base)
+        self.assertEqual(copy.replace(base), base)
+
+        changes = (("year", 2),
+                   ("month", 3),
+                   ("day", 4),
+                   ("hour", 5),
+                   ("minute", 6),
+                   ("second", 7),
+                   ("microsecond", 8),
+                   ("tzinfo", zm200))
+        for i, (name, newval) in enumerate(changes):
             newargs = args[:]
             newargs[i] = newval
             expected = cls(*newargs)
-            got = base.replace(**{name: newval})
-            self.assertEqual(expected, got)
-            i += 1
+            self.assertEqual(base.replace(**{name: newval}), expected)
+            self.assertEqual(copy.replace(base, **{name: newval}), expected)
 
         # Ensure we can get rid of a tzinfo.
         self.assertEqual(base.tzname(), "+100")
         base2 = base.replace(tzinfo=None)
         self.assertIsNone(base2.tzinfo)
         self.assertIsNone(base2.tzname())
+        base22 = copy.replace(base, tzinfo=None)
+        self.assertIsNone(base22.tzinfo)
+        self.assertIsNone(base22.tzname())
 
         # Ensure we can add one.
         base3 = base2.replace(tzinfo=z100)
         self.assertEqual(base, base3)
         self.assertIs(base.tzinfo, base3.tzinfo)
+        base32 = copy.replace(base22, tzinfo=z100)
+        self.assertEqual(base, base32)
+        self.assertIs(base.tzinfo, base32.tzinfo)
 
         # Out of bounds.
         base = cls(2000, 2, 29)
         self.assertRaises(ValueError, base.replace, year=2001)
+        self.assertRaises(ValueError, copy.replace, base, year=2001)
 
     def test_more_astimezone(self):
         # The inherited test_astimezone covered some trivial and error cases.
diff --git a/Lib/test/imghdrdata/python-raw.jpg b/Lib/test/imghdrdata/python-raw.jpg
deleted file mode 100644
index 11940b3410ddf0..00000000000000
Binary files a/Lib/test/imghdrdata/python-raw.jpg and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.bmp b/Lib/test/imghdrdata/python.bmp
deleted file mode 100644
index 675f95191a45fd..00000000000000
Binary files a/Lib/test/imghdrdata/python.bmp and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.exr b/Lib/test/imghdrdata/python.exr
deleted file mode 100644
index 773c81ee1fb850..00000000000000
Binary files a/Lib/test/imghdrdata/python.exr and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.jpg b/Lib/test/imghdrdata/python.jpg
deleted file mode 100644
index 21222c09f5a71d..00000000000000
Binary files a/Lib/test/imghdrdata/python.jpg and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.pbm b/Lib/test/imghdrdata/python.pbm
deleted file mode 100644
index 1848ba7ff064e7..00000000000000
--- a/Lib/test/imghdrdata/python.pbm
+++ /dev/null
@@ -1,3 +0,0 @@
-P4
-16 16
-ûñ¿úßÕ­±[ñ¥a_ÁX
°
°
ðððð?ÿÿ
\ No newline at end of file
diff --git a/Lib/test/imghdrdata/python.ras b/Lib/test/imghdrdata/python.ras
deleted file mode 100644
index 130e96f817ed9d..00000000000000
Binary files a/Lib/test/imghdrdata/python.ras and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.sgi b/Lib/test/imghdrdata/python.sgi
deleted file mode 100644
index ffe9081c7a5b67..00000000000000
Binary files a/Lib/test/imghdrdata/python.sgi and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.tiff b/Lib/test/imghdrdata/python.tiff
deleted file mode 100644
index 39d0bfcec02533..00000000000000
Binary files a/Lib/test/imghdrdata/python.tiff and /dev/null differ
diff --git a/Lib/test/imghdrdata/python.webp b/Lib/test/imghdrdata/python.webp
deleted file mode 100644
index e824ec7fb1c7fa..00000000000000
Binary files a/Lib/test/imghdrdata/python.webp and /dev/null differ
diff --git a/Lib/test/imp_dummy.py b/Lib/test/imp_dummy.py
deleted file mode 100644
index 2a4deb49547cf4..00000000000000
--- a/Lib/test/imp_dummy.py
+++ /dev/null
@@ -1,3 +0,0 @@
-# Fodder for test of issue24748 in test_imp
-
-dummy_name = True
diff --git a/Lib/test/libregrtest/__init__.py b/Lib/test/libregrtest/__init__.py
index 5e8dba5dbde71a..e69de29bb2d1d6 100644
--- a/Lib/test/libregrtest/__init__.py
+++ b/Lib/test/libregrtest/__init__.py
@@ -1,2 +0,0 @@
-from test.libregrtest.cmdline import _parse_args, RESOURCE_NAMES, ALL_RESOURCES
-from test.libregrtest.main import main
diff --git a/Lib/test/libregrtest/cmdline.py b/Lib/test/libregrtest/cmdline.py
index ebe57920d9185c..0053bce4292f64 100644
--- a/Lib/test/libregrtest/cmdline.py
+++ b/Lib/test/libregrtest/cmdline.py
@@ -1,8 +1,9 @@
 import argparse
-import os
+import os.path
 import shlex
 import sys
-from test.support import os_helper
+from test.support import os_helper, Py_DEBUG
+from .utils import ALL_RESOURCES, RESOURCE_NAMES, TestFilter
 
 
 USAGE = """\
@@ -27,8 +28,10 @@
 Additional option details:
 
 -r randomizes test execution order. You can use --randseed=int to provide an
-int seed value for the randomizer; this is useful for reproducing troublesome
-test orders.
+int seed value for the randomizer. The randseed value will be used
+to set seeds for all random usages in tests
+(including randomizing the tests order if -r is set).
+By default we always set random seed, but do not randomize test order.
 
 -s On the first invocation of regrtest using -s, the first test file found
 or the first test file given on the command line is run, and the name of
@@ -107,6 +110,8 @@
 
     cpu -       Used for certain CPU-heavy tests.
 
+    walltime -  Long running but not CPU-bound tests.
+
     subprocess  Run all tests for the subprocess module.
 
     urlfetch -  It is okay to download files required on testing.
@@ -128,25 +133,17 @@
 """
 
 
-ALL_RESOURCES = ('audio', 'curses', 'largefile', 'network',
-                 'decimal', 'cpu', 'subprocess', 'urlfetch', 'gui')
-
-# Other resources excluded from --use=all:
-#
-# - extralagefile (ex: test_zipfile64): really too slow to be enabled
-#   "by default"
-# - tzdata: while needed to validate fully test_datetime, it makes
-#   test_datetime too slow (15-20 min on some buildbots) and so is disabled by
-#   default (see bpo-30822).
-RESOURCE_NAMES = ALL_RESOURCES + ('extralargefile', 'tzdata')
-
-
 class Namespace(argparse.Namespace):
     def __init__(self, **kwargs) -> None:
+        self.ci = False
         self.testdir = None
         self.verbose = 0
         self.quiet = False
         self.exclude = False
+        self.cleanup = False
+        self.wait = False
+        self.list_cases = False
+        self.list_tests = False
         self.single = False
         self.randomize = False
         self.fromfile = None
@@ -155,8 +152,8 @@ def __init__(self, **kwargs) -> None:
         self.trace = False
         self.coverdir = 'coverage'
         self.runleaks = False
-        self.huntrleaks = False
-        self.verbose2 = False
+        self.huntrleaks: tuple[int, int, str] | None = None
+        self.rerun = False
         self.verbose3 = False
         self.print_slow = False
         self.random_seed = None
@@ -164,10 +161,17 @@ def __init__(self, **kwargs) -> None:
         self.forever = False
         self.header = False
         self.failfast = False
-        self.match_tests = None
-        self.ignore_tests = None
+        self.match_tests: TestFilter = []
         self.pgo = False
         self.pgo_extended = False
+        self.worker_json = None
+        self.start = None
+        self.timeout = None
+        self.memlimit = None
+        self.threshold = None
+        self.fail_rerun = False
+        self.tempdir = None
+        self._add_python_opts = True
 
         super().__init__(**kwargs)
 
@@ -178,6 +182,20 @@ def error(self, message):
         super().error(message + "\nPass -h or --help for complete help.")
 
 
+class FilterAction(argparse.Action):
+    def __call__(self, parser, namespace, value, option_string=None):
+        items = getattr(namespace, self.dest)
+        items.append((value, self.const))
+
+
+class FromFileFilterAction(argparse.Action):
+    def __call__(self, parser, namespace, value, option_string=None):
+        items = getattr(namespace, self.dest)
+        with open(value, encoding='utf-8') as fp:
+            for line in fp:
+                items.append((line.strip(), self.const))
+
+
 def _create_parser():
     # Set prog to prevent the uninformative "__main__.py" from displaying in
     # error messages when using "python -m test ...".
@@ -187,6 +205,7 @@ def _create_parser():
                         epilog=EPILOG,
                         add_help=False,
                         formatter_class=argparse.RawDescriptionHelpFormatter)
+    parser.set_defaults(match_tests=[])
 
     # Arguments with this clause added to its help are described further in
     # the epilog's "Additional option details" section.
@@ -196,25 +215,35 @@ def _create_parser():
     # We add help explicitly to control what argument group it renders under.
     group.add_argument('-h', '--help', action='help',
                        help='show this help message and exit')
-    group.add_argument('--timeout', metavar='TIMEOUT', type=float,
+    group.add_argument('--fast-ci', action='store_true',
+                       help='Fast Continuous Integration (CI) mode used by '
+                            'GitHub Actions')
+    group.add_argument('--slow-ci', action='store_true',
+                       help='Slow Continuous Integration (CI) mode used by '
+                            'buildbot workers')
+    group.add_argument('--timeout', metavar='TIMEOUT',
                         help='dump the traceback and exit if a test takes '
                              'more than TIMEOUT seconds; disabled if TIMEOUT '
                              'is negative or equals to zero')
     group.add_argument('--wait', action='store_true',
                        help='wait for user input, e.g., allow a debugger '
                             'to be attached')
-    group.add_argument('--worker-args', metavar='ARGS')
     group.add_argument('-S', '--start', metavar='START',
                        help='the name of the test at which to start.' +
                             more_details)
     group.add_argument('-p', '--python', metavar='PYTHON',
                        help='Command to run Python test subprocesses with.')
+    group.add_argument('--randseed', metavar='SEED',
+                       dest='random_seed', type=int,
+                       help='pass a global random seed')
 
     group = parser.add_argument_group('Verbosity')
     group.add_argument('-v', '--verbose', action='count',
                        help='run tests in verbose mode with output to stdout')
-    group.add_argument('-w', '--verbose2', action='store_true',
+    group.add_argument('-w', '--rerun', action='store_true',
                        help='re-run failed tests in verbose mode')
+    group.add_argument('--verbose2', action='store_true', dest='rerun',
+                       help='deprecated alias to --rerun')
     group.add_argument('-W', '--verbose3', action='store_true',
                        help='display test output on failure')
     group.add_argument('-q', '--quiet', action='store_true',
@@ -227,10 +256,6 @@ def _create_parser():
     group = parser.add_argument_group('Selecting tests')
     group.add_argument('-r', '--randomize', action='store_true',
                        help='randomize test execution order.' + more_details)
-    group.add_argument('--randseed', metavar='SEED',
-                       dest='random_seed', type=int,
-                       help='pass a random seed to reproduce a previous '
-                            'random run')
     group.add_argument('-f', '--fromfile', metavar='FILE',
                        help='read names of tests to run from a file.' +
                             more_details)
@@ -240,17 +265,19 @@ def _create_parser():
                        help='single step through a set of tests.' +
                             more_details)
     group.add_argument('-m', '--match', metavar='PAT',
-                       dest='match_tests', action='append',
+                       dest='match_tests', action=FilterAction, const=True,
                        help='match test cases and methods with glob pattern PAT')
     group.add_argument('-i', '--ignore', metavar='PAT',
-                       dest='ignore_tests', action='append',
+                       dest='match_tests', action=FilterAction, const=False,
                        help='ignore test cases and methods with glob pattern PAT')
     group.add_argument('--matchfile', metavar='FILENAME',
-                       dest='match_filename',
+                       dest='match_tests',
+                       action=FromFileFilterAction, const=True,
                        help='similar to --match but get patterns from a '
                             'text file, one pattern per line')
     group.add_argument('--ignorefile', metavar='FILENAME',
-                       dest='ignore_filename',
+                       dest='match_tests',
+                       action=FromFileFilterAction, const=False,
                        help='similar to --matchfile but it receives patterns '
                             'from text file to ignore')
     group.add_argument('-G', '--failfast', action='store_true',
@@ -309,6 +336,9 @@ def _create_parser():
     group.add_argument('--fail-env-changed', action='store_true',
                        help='if a test file alters the environment, mark '
                             'the test as failed')
+    group.add_argument('--fail-rerun', action='store_true',
+                       help='if a test failed and then passed when re-run, '
+                            'mark the tests as failed')
 
     group.add_argument('--junit-xml', dest='xmlpath', metavar='FILENAME',
                        help='writes JUnit-style XML results to the specified '
@@ -317,6 +347,9 @@ def _create_parser():
                        help='override the working directory for the test run')
     group.add_argument('--cleanup', action='store_true',
                        help='remove old test_python_* directories')
+    group.add_argument('--dont-add-python-opts', dest='_add_python_opts',
+                       action='store_false',
+                       help="internal option, don't use it")
     return parser
 
 
@@ -367,12 +400,64 @@ def _parse_args(args, **kwargs):
     for arg in ns.args:
         if arg.startswith('-'):
             parser.error("unrecognized arguments: %s" % arg)
-            sys.exit(1)
+
+    if ns.timeout is not None:
+        # Support "--timeout=" (no value) so Makefile.pre.pre TESTTIMEOUT
+        # can be used by "make buildbottest" and "make test".
+        if ns.timeout != "":
+            try:
+                ns.timeout = float(ns.timeout)
+            except ValueError:
+                parser.error(f"invalid timeout value: {ns.timeout!r}")
+        else:
+            ns.timeout = None
+
+    # Continuous Integration (CI): common options for fast/slow CI modes
+    if ns.slow_ci or ns.fast_ci:
+        # Similar to options:
+        #
+        #     -j0 --randomize --fail-env-changed --fail-rerun --rerun
+        #     --slowest --verbose3
+        if ns.use_mp is None:
+            ns.use_mp = 0
+        ns.randomize = True
+        ns.fail_env_changed = True
+        if ns.python is None:
+            ns.rerun = True
+        ns.print_slow = True
+        ns.verbose3 = True
+    else:
+        ns._add_python_opts = False
+
+    # When both --slow-ci and --fast-ci options are present,
+    # --slow-ci has the priority
+    if ns.slow_ci:
+        # Similar to: -u "all" --timeout=1200
+        if ns.use is None:
+            ns.use = []
+        ns.use.insert(0, ['all'])
+        if ns.timeout is None:
+            ns.timeout = 1200  # 20 minutes
+    elif ns.fast_ci:
+        # Similar to: -u "all,-cpu" --timeout=600
+        if ns.use is None:
+            ns.use = []
+        ns.use.insert(0, ['all', '-cpu'])
+        if ns.timeout is None:
+            ns.timeout = 600  # 10 minutes
 
     if ns.single and ns.fromfile:
         parser.error("-s and -f don't go together!")
-    if ns.use_mp is not None and ns.trace:
-        parser.error("-T and -j don't go together!")
+    if ns.trace:
+        if ns.use_mp is not None:
+            if not Py_DEBUG:
+                parser.error("need --with-pydebug to use -T and -j together")
+        else:
+            print(
+                "Warning: collecting coverage without -j is imprecise. Configure"
+                " --with-pydebug and run -m test -T -j for best results.",
+                file=sys.stderr
+            )
     if ns.python is not None:
         if ns.use_mp is None:
             parser.error("-p requires -j!")
@@ -380,7 +465,7 @@ def _parse_args(args, **kwargs):
         ns.python = shlex.split(ns.python)
     if ns.failfast and not (ns.verbose or ns.verbose3):
         parser.error("-G/--failfast needs either -v or -W")
-    if ns.pgo and (ns.verbose or ns.verbose2 or ns.verbose3):
+    if ns.pgo and (ns.verbose or ns.rerun or ns.verbose3):
         parser.error("--pgo/-v don't go together!")
     if ns.pgo_extended:
         ns.pgo = True  # pgo_extended implies pgo
@@ -394,10 +479,6 @@ def _parse_args(args, **kwargs):
     if ns.timeout is not None:
         if ns.timeout <= 0:
             ns.timeout = None
-    if ns.use_mp is not None:
-        if ns.use_mp <= 0:
-            # Use all cores + extras for tests that like to sleep
-            ns.use_mp = 2 + (os.cpu_count() or 1)
     if ns.use:
         for a in ns.use:
             for r in a:
@@ -420,25 +501,28 @@ def _parse_args(args, **kwargs):
         ns.randomize = True
     if ns.verbose:
         ns.header = True
-    if ns.huntrleaks and ns.verbose3:
+    # When -jN option is used, a worker process does not use --verbose3
+    # and so -R 3:3 -jN --verbose3 just works as expected: there is no false
+    # alarm about memory leak.
+    if ns.huntrleaks and ns.verbose3 and ns.use_mp is None:
         ns.verbose3 = False
+        # run_single_test() replaces sys.stdout with io.StringIO if verbose3
+        # is true. In this case, huntrleaks sees an write into StringIO as
+        # a memory leak, whereas it is not (gh-71290).
         print("WARNING: Disable --verbose3 because it's incompatible with "
-              "--huntrleaks: see http://bugs.python.org/issue27103",
+              "--huntrleaks without -jN option",
               file=sys.stderr)
-    if ns.match_filename:
-        if ns.match_tests is None:
-            ns.match_tests = []
-        with open(ns.match_filename) as fp:
-            for line in fp:
-                ns.match_tests.append(line.strip())
-    if ns.ignore_filename:
-        if ns.ignore_tests is None:
-            ns.ignore_tests = []
-        with open(ns.ignore_filename) as fp:
-            for line in fp:
-                ns.ignore_tests.append(line.strip())
     if ns.forever:
         # --forever implies --failfast
         ns.failfast = True
 
+    if ns.huntrleaks:
+        warmup, repetitions, _ = ns.huntrleaks
+        if warmup < 1 or repetitions < 1:
+            msg = ("Invalid values for the --huntrleaks/-R parameters. The "
+                   "number of warmups and repetitions must be at least 1 "
+                   "each (1:1).")
+            print(msg, file=sys.stderr, flush=True)
+            sys.exit(2)
+
     return ns
diff --git a/Lib/test/libregrtest/filter.py b/Lib/test/libregrtest/filter.py
new file mode 100644
index 00000000000000..817624d79e9263
--- /dev/null
+++ b/Lib/test/libregrtest/filter.py
@@ -0,0 +1,72 @@
+import itertools
+import operator
+import re
+
+
+# By default, don't filter tests
+_test_matchers = ()
+_test_patterns = ()
+
+
+def match_test(test):
+    # Function used by support.run_unittest() and regrtest --list-cases
+    result = False
+    for matcher, result in reversed(_test_matchers):
+        if matcher(test.id()):
+            return result
+    return not result
+
+
+def _is_full_match_test(pattern):
+    # If a pattern contains at least one dot, it's considered
+    # as a full test identifier.
+    # Example: 'test.test_os.FileTests.test_access'.
+    #
+    # ignore patterns which contain fnmatch patterns: '*', '?', '[...]'
+    # or '[!...]'. For example, ignore 'test_access*'.
+    return ('.' in pattern) and (not re.search(r'[?*\[\]]', pattern))
+
+
+def set_match_tests(patterns):
+    global _test_matchers, _test_patterns
+
+    if not patterns:
+        _test_matchers = ()
+        _test_patterns = ()
+    else:
+        itemgetter = operator.itemgetter
+        patterns = tuple(patterns)
+        if patterns != _test_patterns:
+            _test_matchers = [
+                (_compile_match_function(map(itemgetter(0), it)), result)
+                for result, it in itertools.groupby(patterns, itemgetter(1))
+            ]
+            _test_patterns = patterns
+
+
+def _compile_match_function(patterns):
+    patterns = list(patterns)
+
+    if all(map(_is_full_match_test, patterns)):
+        # Simple case: all patterns are full test identifier.
+        # The test.bisect_cmd utility only uses such full test identifiers.
+        return set(patterns).__contains__
+    else:
+        import fnmatch
+        regex = '|'.join(map(fnmatch.translate, patterns))
+        # The search *is* case sensitive on purpose:
+        # don't use flags=re.IGNORECASE
+        regex_match = re.compile(regex).match
+
+        def match_test_regex(test_id, regex_match=regex_match):
+            if regex_match(test_id):
+                # The regex matches the whole identifier, for example
+                # 'test.test_os.FileTests.test_access'.
+                return True
+            else:
+                # Try to match parts of the test identifier.
+                # For example, split 'test.test_os.FileTests.test_access'
+                # into: 'test', 'test_os', 'FileTests' and 'test_access'.
+                return any(map(regex_match, test_id.split(".")))
+
+        return match_test_regex
diff --git a/Lib/test/libregrtest/findtests.py b/Lib/test/libregrtest/findtests.py
new file mode 100644
index 00000000000000..78343775bc5b99
--- /dev/null
+++ b/Lib/test/libregrtest/findtests.py
@@ -0,0 +1,106 @@
+import os
+import sys
+import unittest
+
+from test import support
+
+from .filter import match_test, set_match_tests
+from .utils import (
+    StrPath, TestName, TestTuple, TestList, TestFilter,
+    abs_module_name, count, printlist)
+
+
+# If these test directories are encountered recurse into them and treat each
+# "test_*.py" file or each sub-directory as a separate test module. This can
+# increase parallelism.
+#
+# Beware this can't generally be done for any directory with sub-tests as the
+# __init__.py may do things which alter what tests are to be run.
+SPLITTESTDIRS: set[TestName] = {
+    "test_asyncio",
+    "test_concurrent_futures",
+    "test_future_stmt",
+    "test_gdb",
+    "test_inspect",
+    "test_multiprocessing_fork",
+    "test_multiprocessing_forkserver",
+    "test_multiprocessing_spawn",
+}
+
+
+def findtestdir(path: StrPath | None = None) -> StrPath:
+    return path or os.path.dirname(os.path.dirname(__file__)) or os.curdir
+
+
+def findtests(*, testdir: StrPath | None = None, exclude=(),
+              split_test_dirs: set[TestName] = SPLITTESTDIRS,
+              base_mod: str = "") -> TestList:
+    """Return a list of all applicable test modules."""
+    testdir = findtestdir(testdir)
+    tests = []
+    for name in os.listdir(testdir):
+        mod, ext = os.path.splitext(name)
+        if (not mod.startswith("test_")) or (mod in exclude):
+            continue
+        if base_mod:
+            fullname = f"{base_mod}.{mod}"
+        else:
+            fullname = mod
+        if fullname in split_test_dirs:
+            subdir = os.path.join(testdir, mod)
+            if not base_mod:
+                fullname = f"test.{mod}"
+            tests.extend(findtests(testdir=subdir, exclude=exclude,
+                                   split_test_dirs=split_test_dirs,
+                                   base_mod=fullname))
+        elif ext in (".py", ""):
+            tests.append(fullname)
+    return sorted(tests)
+
+
+def split_test_packages(tests, *, testdir: StrPath | None = None, exclude=(),
+                        split_test_dirs=SPLITTESTDIRS):
+    testdir = findtestdir(testdir)
+    splitted = []
+    for name in tests:
+        if name in split_test_dirs:
+            subdir = os.path.join(testdir, name)
+            splitted.extend(findtests(testdir=subdir, exclude=exclude,
+                                      split_test_dirs=split_test_dirs,
+                                      base_mod=name))
+        else:
+            splitted.append(name)
+    return splitted
+
+
+def _list_cases(suite):
+    for test in suite:
+        if isinstance(test, unittest.loader._FailedTest):
+            continue
+        if isinstance(test, unittest.TestSuite):
+            _list_cases(test)
+        elif isinstance(test, unittest.TestCase):
+            if match_test(test):
+                print(test.id())
+
+def list_cases(tests: TestTuple, *,
+               match_tests: TestFilter | None = None,
+               test_dir: StrPath | None = None):
+    support.verbose = False
+    set_match_tests(match_tests)
+
+    skipped = []
+    for test_name in tests:
+        module_name = abs_module_name(test_name, test_dir)
+        try:
+            suite = unittest.defaultTestLoader.loadTestsFromName(module_name)
+            _list_cases(suite)
+        except unittest.SkipTest:
+            skipped.append(test_name)
+
+    if skipped:
+        sys.stdout.flush()
+        stderr = sys.stderr
+        print(file=stderr)
+        print(count(len(skipped), "test"), "skipped:", file=stderr)
+        printlist(skipped, file=stderr)
diff --git a/Lib/test/libregrtest/logger.py b/Lib/test/libregrtest/logger.py
new file mode 100644
index 00000000000000..a125706927393c
--- /dev/null
+++ b/Lib/test/libregrtest/logger.py
@@ -0,0 +1,86 @@
+import os
+import time
+
+from test.support import MS_WINDOWS
+from .results import TestResults
+from .runtests import RunTests
+from .utils import print_warning
+
+if MS_WINDOWS:
+    from .win_utils import WindowsLoadTracker
+
+
+class Logger:
+    def __init__(self, results: TestResults, quiet: bool, pgo: bool):
+        self.start_time = time.perf_counter()
+        self.test_count_text = ''
+        self.test_count_width = 3
+        self.win_load_tracker: WindowsLoadTracker | None = None
+        self._results: TestResults = results
+        self._quiet: bool = quiet
+        self._pgo: bool = pgo
+
+    def log(self, line: str = '') -> None:
+        empty = not line
+
+        # add the system load prefix: "load avg: 1.80 "
+        load_avg = self.get_load_avg()
+        if load_avg is not None:
+            line = f"load avg: {load_avg:.2f} {line}"
+
+        # add the timestamp prefix:  "0:01:05 "
+        log_time = time.perf_counter() - self.start_time
+
+        mins, secs = divmod(int(log_time), 60)
+        hours, mins = divmod(mins, 60)
+        formatted_log_time = "%d:%02d:%02d" % (hours, mins, secs)
+
+        line = f"{formatted_log_time} {line}"
+        if empty:
+            line = line[:-1]
+
+        print(line, flush=True)
+
+    def get_load_avg(self) -> float | None:
+        if hasattr(os, 'getloadavg'):
+            return os.getloadavg()[0]
+        if self.win_load_tracker is not None:
+            return self.win_load_tracker.getloadavg()
+        return None
+
+    def display_progress(self, test_index: int, text: str) -> None:
+        if self._quiet:
+            return
+        results = self._results
+
+        # "[ 51/405/1] test_tcl passed"
+        line = f"{test_index:{self.test_count_width}}{self.test_count_text}"
+        fails = len(results.bad) + len(results.env_changed)
+        if fails and not self._pgo:
+            line = f"{line}/{fails}"
+        self.log(f"[{line}] {text}")
+
+    def set_tests(self, runtests: RunTests) -> None:
+        if runtests.forever:
+            self.test_count_text = ''
+            self.test_count_width = 3
+        else:
+            self.test_count_text = '/{}'.format(len(runtests.tests))
+            self.test_count_width = len(self.test_count_text) - 1
+
+    def start_load_tracker(self) -> None:
+        if not MS_WINDOWS:
+            return
+
+        try:
+            self.win_load_tracker = WindowsLoadTracker()
+        except PermissionError as error:
+            # Standard accounts may not have access to the performance
+            # counters.
+            print_warning(f'Failed to create WindowsLoadTracker: {error}')
+
+    def stop_load_tracker(self) -> None:
+        if self.win_load_tracker is None:
+            return
+        self.win_load_tracker.close()
+        self.win_load_tracker = None
diff --git a/Lib/test/libregrtest/main.py b/Lib/test/libregrtest/main.py
index 3c3509d0303371..7ca1b1cb65ae40 100644
--- a/Lib/test/libregrtest/main.py
+++ b/Lib/test/libregrtest/main.py
@@ -1,46 +1,31 @@
-import faulthandler
-import locale
 import os
-import platform
 import random
 import re
+import shlex
 import sys
 import sysconfig
-import tempfile
 import time
-import unittest
-from test.libregrtest.cmdline import _parse_args
-from test.libregrtest.runtest import (
-    findtests, runtest, get_abs_module, is_failed,
-    STDTESTS, NOTTESTS, PROGRESS_MIN_TIME,
-    Passed, Failed, EnvChanged, Skipped, ResourceDenied, Interrupted,
-    ChildError, DidNotRun)
-from test.libregrtest.setup import setup_tests
-from test.libregrtest.pgo import setup_pgo_tests
-from test.libregrtest.utils import (removepy, count, format_duration,
-                                    printlist, get_build_info)
-from test import support
-from test.support import os_helper
-from test.support import threading_helper
-
-
-# bpo-38203: Maximum delay in seconds to exit Python (call Py_Finalize()).
-# Used to protect against threading._shutdown() hang.
-# Must be smaller than buildbot "1200 seconds without output" limit.
-EXIT_TIMEOUT = 120.0
-
-# gh-90681: When rerunning tests, we might need to rerun the whole
-# class or module suite if some its life-cycle hooks fail.
-# Test level hooks are not affected.
-_TEST_LIFECYCLE_HOOKS = frozenset((
-    'setUpClass', 'tearDownClass',
-    'setUpModule', 'tearDownModule',
-))
+import trace
 
-EXITCODE_BAD_TEST = 2
-EXITCODE_INTERRUPTED = 130
-EXITCODE_ENV_CHANGED = 3
-EXITCODE_NO_TESTS_RAN = 4
+from test import support
+from test.support import os_helper, MS_WINDOWS
+
+from .cmdline import _parse_args, Namespace
+from .findtests import findtests, split_test_packages, list_cases
+from .logger import Logger
+from .pgo import setup_pgo_tests
+from .result import State, TestResult
+from .results import TestResults, EXITCODE_INTERRUPTED
+from .runtests import RunTests, HuntRefleak
+from .setup import setup_process, setup_test_dir
+from .single import run_single_test, PROGRESS_MIN_TIME
+from .utils import (
+    StrPath, StrJSON, TestName, TestList, TestTuple, TestFilter,
+    strip_py_suffix, count, format_duration,
+    printlist, get_temp_dir, get_work_dir, exit_timeout,
+    display_header, cleanup_temp_dir, print_warning,
+    is_cross_compiled, get_host_runner,
+    EXIT_TIMEOUT)
 
 
 class Regrtest:
@@ -66,263 +51,210 @@ class Regrtest:
     directly to set the values that would normally be set by flags
     on the command line.
     """
-    def __init__(self):
-        # Namespace of command line options
-        self.ns = None
+    def __init__(self, ns: Namespace, _add_python_opts: bool = False):
+        # Log verbosity
+        self.verbose: int = int(ns.verbose)
+        self.quiet: bool = ns.quiet
+        self.pgo: bool = ns.pgo
+        self.pgo_extended: bool = ns.pgo_extended
+
+        # Test results
+        self.results: TestResults = TestResults()
+        self.first_state: str | None = None
+
+        # Logger
+        self.logger = Logger(self.results, self.quiet, self.pgo)
+
+        # Actions
+        self.want_header: bool = ns.header
+        self.want_list_tests: bool = ns.list_tests
+        self.want_list_cases: bool = ns.list_cases
+        self.want_wait: bool = ns.wait
+        self.want_cleanup: bool = ns.cleanup
+        self.want_rerun: bool = ns.rerun
+        self.want_run_leaks: bool = ns.runleaks
+
+        self.ci_mode: bool = (ns.fast_ci or ns.slow_ci)
+        self.want_add_python_opts: bool = (_add_python_opts
+                                           and ns._add_python_opts)
+
+        # Select tests
+        self.match_tests: TestFilter = ns.match_tests
+        self.exclude: bool = ns.exclude
+        self.fromfile: StrPath | None = ns.fromfile
+        self.starting_test: TestName | None = ns.start
+        self.cmdline_args: TestList = ns.args
+
+        # Workers
+        if ns.use_mp is None:
+            num_workers = 0  # run sequentially
+        elif ns.use_mp <= 0:
+            num_workers = -1  # use the number of CPUs
+        else:
+            num_workers = ns.use_mp
+        self.num_workers: int = num_workers
+        self.worker_json: StrJSON | None = ns.worker_json
+
+        # Options to run tests
+        self.fail_fast: bool = ns.failfast
+        self.fail_env_changed: bool = ns.fail_env_changed
+        self.fail_rerun: bool = ns.fail_rerun
+        self.forever: bool = ns.forever
+        self.output_on_failure: bool = ns.verbose3
+        self.timeout: float | None = ns.timeout
+        if ns.huntrleaks:
+            warmups, runs, filename = ns.huntrleaks
+            filename = os.path.abspath(filename)
+            self.hunt_refleak: HuntRefleak | None = HuntRefleak(warmups, runs, filename)
+        else:
+            self.hunt_refleak = None
+        self.test_dir: StrPath | None = ns.testdir
+        self.junit_filename: StrPath | None = ns.xmlpath
+        self.memory_limit: str | None = ns.memlimit
+        self.gc_threshold: int | None = ns.threshold
+        self.use_resources: tuple[str, ...] = tuple(ns.use_resources)
+        if ns.python:
+            self.python_cmd: tuple[str, ...] | None = tuple(ns.python)
+        else:
+            self.python_cmd = None
+        self.coverage: bool = ns.trace
+        self.coverage_dir: StrPath | None = ns.coverdir
+        self.tmp_dir: StrPath | None = ns.tempdir
+
+        # Randomize
+        self.randomize: bool = ns.randomize
+        if ('SOURCE_DATE_EPOCH' in os.environ
+            # don't use the variable if empty
+            and os.environ['SOURCE_DATE_EPOCH']
+        ):
+            self.randomize = False
+            # SOURCE_DATE_EPOCH should be an integer, but use a string to not
+            # fail if it's not integer. random.seed() accepts a string.
+            # https://reproducible-builds.org/docs/source-date-epoch/
+            self.random_seed: int | str = os.environ['SOURCE_DATE_EPOCH']
+        elif ns.random_seed is None:
+            self.random_seed = random.getrandbits(32)
+        else:
+            self.random_seed = ns.random_seed
 
         # tests
-        self.tests = []
-        self.selected = []
-
-        # test results
-        self.good = []
-        self.bad = []
-        self.skipped = []
-        self.resource_denieds = []
-        self.environment_changed = []
-        self.run_no_tests = []
-        self.need_rerun = []
-        self.rerun = []
-        self.first_result = None
-        self.interrupted = False
-
-        # used by --slow
-        self.test_times = []
-
-        # used by --coverage, trace.Trace instance
-        self.tracer = None
+        self.first_runtests: RunTests | None = None
+
+        # used by --slowest
+        self.print_slowest: bool = ns.print_slow
 
         # used to display the progress bar "[ 3/100]"
-        self.start_time = time.monotonic()
-        self.test_count = ''
-        self.test_count_width = 1
+        self.start_time = time.perf_counter()
 
         # used by --single
-        self.next_single_test = None
-        self.next_single_filename = None
-
-        # used by --junit-xml
-        self.testsuite_xml = None
-
-        # misc
-        self.win_load_tracker = None
-        self.tmp_dir = None
-        self.worker_test_name = None
-
-    def get_executed(self):
-        return (set(self.good) | set(self.bad) | set(self.skipped)
-                | set(self.resource_denieds) | set(self.environment_changed)
-                | set(self.run_no_tests))
-
-    def accumulate_result(self, result, rerun=False):
-        test_name = result.name
-
-        if not isinstance(result, (ChildError, Interrupted)) and not rerun:
-            self.test_times.append((result.duration_sec, test_name))
-
-        if isinstance(result, Passed):
-            self.good.append(test_name)
-        elif isinstance(result, ResourceDenied):
-            self.skipped.append(test_name)
-            self.resource_denieds.append(test_name)
-        elif isinstance(result, Skipped):
-            self.skipped.append(test_name)
-        elif isinstance(result, EnvChanged):
-            self.environment_changed.append(test_name)
-        elif isinstance(result, Failed):
-            if not rerun:
-                self.bad.append(test_name)
-                self.need_rerun.append(result)
-        elif isinstance(result, DidNotRun):
-            self.run_no_tests.append(test_name)
-        elif isinstance(result, Interrupted):
-            self.interrupted = True
-        else:
-            raise ValueError("invalid test result: %r" % result)
-
-        if rerun and not isinstance(result, (Failed, Interrupted)):
-            self.bad.remove(test_name)
-
-        xml_data = result.xml_data
-        if xml_data:
-            import xml.etree.ElementTree as ET
-            for e in xml_data:
-                try:
-                    self.testsuite_xml.append(ET.fromstring(e))
-                except ET.ParseError:
-                    print(xml_data, file=sys.__stderr__)
-                    raise
+        self.single_test_run: bool = ns.single
+        self.next_single_test: TestName | None = None
+        self.next_single_filename: StrPath | None = None
 
     def log(self, line=''):
-        empty = not line
-
-        # add the system load prefix: "load avg: 1.80 "
-        load_avg = self.getloadavg()
-        if load_avg is not None:
-            line = f"load avg: {load_avg:.2f} {line}"
-
-        # add the timestamp prefix:  "0:01:05 "
-        test_time = time.monotonic() - self.start_time
-
-        mins, secs = divmod(int(test_time), 60)
-        hours, mins = divmod(mins, 60)
-        test_time = "%d:%02d:%02d" % (hours, mins, secs)
-
-        line = f"{test_time} {line}"
-        if empty:
-            line = line[:-1]
-
-        print(line, flush=True)
-
-    def display_progress(self, test_index, text):
-        if self.ns.quiet:
-            return
-
-        # "[ 51/405/1] test_tcl passed"
-        line = f"{test_index:{self.test_count_width}}{self.test_count}"
-        fails = len(self.bad) + len(self.environment_changed)
-        if fails and not self.ns.pgo:
-            line = f"{line}/{fails}"
-        self.log(f"[{line}] {text}")
-
-    def parse_args(self, kwargs):
-        ns = _parse_args(sys.argv[1:], **kwargs)
-
-        if ns.xmlpath:
-            support.junit_xml_list = self.testsuite_xml = []
+        self.logger.log(line)
 
-        worker_args = ns.worker_args
-        if worker_args is not None:
-            from test.libregrtest.runtest_mp import parse_worker_args
-            ns, test_name = parse_worker_args(ns.worker_args)
-            ns.worker_args = worker_args
-            self.worker_test_name = test_name
-
-        # Strip .py extensions.
-        removepy(ns.args)
-
-        if ns.huntrleaks:
-            warmup, repetitions, _ = ns.huntrleaks
-            if warmup < 1 or repetitions < 1:
-                msg = ("Invalid values for the --huntrleaks/-R parameters. The "
-                       "number of warmups and repetitions must be at least 1 "
-                       "each (1:1).")
-                print(msg, file=sys.stderr, flush=True)
-                sys.exit(2)
-
-        if ns.tempdir:
-            ns.tempdir = os.path.expanduser(ns.tempdir)
-
-        self.ns = ns
-
-    def find_tests(self, tests):
-        self.tests = tests
-
-        if self.ns.single:
+    def find_tests(self, tests: TestList | None = None) -> tuple[TestTuple, TestList | None]:
+        if self.single_test_run:
             self.next_single_filename = os.path.join(self.tmp_dir, 'pynexttest')
             try:
                 with open(self.next_single_filename, 'r') as fp:
                     next_test = fp.read().strip()
-                    self.tests = [next_test]
+                    tests = [next_test]
             except OSError:
                 pass
 
-        if self.ns.fromfile:
-            self.tests = []
+        if self.fromfile:
+            tests = []
             # regex to match 'test_builtin' in line:
             # '0:00:00 [  4/400] test_builtin -- test_dict took 1 sec'
             regex = re.compile(r'\btest_[a-zA-Z0-9_]+\b')
-            with open(os.path.join(os_helper.SAVEDCWD, self.ns.fromfile)) as fp:
+            with open(os.path.join(os_helper.SAVEDCWD, self.fromfile)) as fp:
                 for line in fp:
                     line = line.split('#', 1)[0]
                     line = line.strip()
                     match = regex.search(line)
                     if match is not None:
-                        self.tests.append(match.group())
+                        tests.append(match.group())
 
-        removepy(self.tests)
+        strip_py_suffix(tests)
 
-        if self.ns.pgo:
+        if self.pgo:
             # add default PGO tests if no tests are specified
-            setup_pgo_tests(self.ns)
-
-        stdtests = STDTESTS[:]
-        nottests = NOTTESTS.copy()
-        if self.ns.exclude:
-            for arg in self.ns.args:
-                if arg in stdtests:
-                    stdtests.remove(arg)
-                nottests.add(arg)
-            self.ns.args = []
-
-        # if testdir is set, then we are not running the python tests suite, so
-        # don't add default tests to be executed or skipped (pass empty values)
-        if self.ns.testdir:
-            alltests = findtests(self.ns.testdir, list(), set())
-        else:
-            alltests = findtests(self.ns.testdir, stdtests, nottests)
+            setup_pgo_tests(self.cmdline_args, self.pgo_extended)
+
+        exclude_tests = set()
+        if self.exclude:
+            for arg in self.cmdline_args:
+                exclude_tests.add(arg)
+            self.cmdline_args = []
+
+        alltests = findtests(testdir=self.test_dir,
+                             exclude=exclude_tests)
 
-        if not self.ns.fromfile:
-            self.selected = self.tests or self.ns.args or alltests
+        if not self.fromfile:
+            selected = tests or self.cmdline_args
+            if selected:
+                selected = split_test_packages(selected)
+            else:
+                selected = alltests
         else:
-            self.selected = self.tests
-        if self.ns.single:
-            self.selected = self.selected[:1]
+            selected = tests
+
+        if self.single_test_run:
+            selected = selected[:1]
             try:
-                pos = alltests.index(self.selected[0])
+                pos = alltests.index(selected[0])
                 self.next_single_test = alltests[pos + 1]
             except IndexError:
                 pass
 
         # Remove all the selected tests that precede start if it's set.
-        if self.ns.start:
+        if self.starting_test:
             try:
-                del self.selected[:self.selected.index(self.ns.start)]
+                del selected[:selected.index(self.starting_test)]
             except ValueError:
-                print("Couldn't find starting test (%s), using all tests"
-                      % self.ns.start, file=sys.stderr)
+                print(f"Cannot find starting test: {self.starting_test}")
+                sys.exit(1)
 
-        if self.ns.randomize:
-            if self.ns.random_seed is None:
-                self.ns.random_seed = random.randrange(10000000)
-            random.seed(self.ns.random_seed)
-            random.shuffle(self.selected)
+        random.seed(self.random_seed)
+        if self.randomize:
+            random.shuffle(selected)
 
-    def list_tests(self):
-        for name in self.selected:
-            print(name)
+        return (tuple(selected), tests)
 
-    def _list_cases(self, suite):
-        for test in suite:
-            if isinstance(test, unittest.loader._FailedTest):
-                continue
-            if isinstance(test, unittest.TestSuite):
-                self._list_cases(test)
-            elif isinstance(test, unittest.TestCase):
-                if support.match_test(test):
-                    print(test.id())
-
-    def list_cases(self):
-        support.verbose = False
-        support.set_match_tests(self.ns.match_tests, self.ns.ignore_tests)
-
-        for test_name in self.selected:
-            abstest = get_abs_module(self.ns, test_name)
-            try:
-                suite = unittest.defaultTestLoader.loadTestsFromName(abstest)
-                self._list_cases(suite)
-            except unittest.SkipTest:
-                self.skipped.append(test_name)
-
-        if self.skipped:
-            print(file=sys.stderr)
-            print(count(len(self.skipped), "test"), "skipped:", file=sys.stderr)
-            printlist(self.skipped, file=sys.stderr)
-
-    def rerun_failed_tests(self):
-        self.log()
+    @staticmethod
+    def list_tests(tests: TestTuple):
+        for name in tests:
+            print(name)
 
-        if self.ns.python:
+    def _rerun_failed_tests(self, runtests: RunTests):
+        # Configure the runner to re-run tests
+        if self.num_workers == 0:
+            # Always run tests in fresh processes to have more deterministic
+            # initial state. Don't re-run tests in parallel but limit to a
+            # single worker process to have side effects (on the system load
+            # and timings) between tests.
+            self.num_workers = 1
+
+        tests, match_tests_dict = self.results.prepare_rerun()
+
+        # Re-run failed tests
+        self.log(f"Re-running {len(tests)} failed tests in verbose mode in subprocesses")
+        runtests = runtests.copy(
+            tests=tests,
+            rerun=True,
+            verbose=True,
+            forever=False,
+            fail_fast=False,
+            match_tests_dict=match_tests_dict,
+            output_on_failure=False)
+        self.logger.set_tests(runtests)
+        self._run_tests_mp(runtests, self.num_workers)
+        return runtests
+
+    def rerun_failed_tests(self, runtests: RunTests):
+        if self.python_cmd:
             # Temp patch for https://github.com/python/cpython/issues/94052
             self.log(
                 "Re-running failed tests is not supported with --python "
@@ -330,277 +262,117 @@ def rerun_failed_tests(self):
             )
             return
 
-        self.ns.verbose = True
-        self.ns.failfast = False
-        self.ns.verbose3 = False
-
-        self.first_result = self.get_tests_result()
-
-        self.log("Re-running failed tests in verbose mode")
-        rerun_list = list(self.need_rerun)
-        self.need_rerun.clear()
-        for result in rerun_list:
-            test_name = result.name
-            self.rerun.append(test_name)
-
-            errors = result.errors or []
-            failures = result.failures or []
-            error_names = [
-                self.normalize_test_name(test_full_name, is_error=True)
-                for (test_full_name, *_) in errors]
-            failure_names = [
-                self.normalize_test_name(test_full_name)
-                for (test_full_name, *_) in failures]
-            self.ns.verbose = True
-            orig_match_tests = self.ns.match_tests
-            if errors or failures:
-                if self.ns.match_tests is None:
-                    self.ns.match_tests = []
-                self.ns.match_tests.extend(error_names)
-                self.ns.match_tests.extend(failure_names)
-                matching = "matching: " + ", ".join(self.ns.match_tests)
-                self.log(f"Re-running {test_name} in verbose mode ({matching})")
-            else:
-                self.log(f"Re-running {test_name} in verbose mode")
-            result = runtest(self.ns, test_name)
-            self.ns.match_tests = orig_match_tests
+        self.first_state = self.get_state()
+
+        print()
+        rerun_runtests = self._rerun_failed_tests(runtests)
 
-            self.accumulate_result(result, rerun=True)
+        if self.results.bad:
+            print(count(len(self.results.bad), 'test'), "failed again:")
+            printlist(self.results.bad)
 
-            if isinstance(result, Interrupted):
-                break
+        self.display_result(rerun_runtests)
 
-        if self.bad:
-            print(count(len(self.bad), 'test'), "failed again:")
-            printlist(self.bad)
-
-        self.display_result()
-
-    def normalize_test_name(self, test_full_name, *, is_error=False):
-        short_name = test_full_name.split(" ")[0]
-        if is_error and short_name in _TEST_LIFECYCLE_HOOKS:
-            # This means that we have a failure in a life-cycle hook,
-            # we need to rerun the whole module or class suite.
-            # Basically the error looks like this:
-            #    ERROR: setUpClass (test.test_reg_ex.RegTest)
-            # or
-            #    ERROR: setUpModule (test.test_reg_ex)
-            # So, we need to parse the class / module name.
-            lpar = test_full_name.index('(')
-            rpar = test_full_name.index(')')
-            return test_full_name[lpar + 1: rpar].split('.')[-1]
-        return short_name
-
-    def display_result(self):
+    def display_result(self, runtests):
         # If running the test suite for PGO then no one cares about results.
-        if self.ns.pgo:
+        if runtests.pgo:
             return
 
+        state = self.get_state()
         print()
-        print("== Tests result: %s ==" % self.get_tests_result())
-
-        if self.interrupted:
-            print("Test suite interrupted by signal SIGINT.")
-
-        omitted = set(self.selected) - self.get_executed()
-        if omitted:
-            print()
-            print(count(len(omitted), "test"), "omitted:")
-            printlist(omitted)
-
-        if self.good and not self.ns.quiet:
-            print()
-            if (not self.bad
-                and not self.skipped
-                and not self.interrupted
-                and len(self.good) > 1):
-                print("All", end=' ')
-            print(count(len(self.good), "test"), "OK.")
-
-        if self.ns.print_slow:
-            self.test_times.sort(reverse=True)
-            print()
-            print("10 slowest tests:")
-            for test_time, test in self.test_times[:10]:
-                print("- %s: %s" % (test, format_duration(test_time)))
-
-        if self.bad:
-            print()
-            print(count(len(self.bad), "test"), "failed:")
-            printlist(self.bad)
-
-        if self.environment_changed:
-            print()
-            print("{} altered the execution environment:".format(
-                     count(len(self.environment_changed), "test")))
-            printlist(self.environment_changed)
-
-        if self.skipped and not self.ns.quiet:
-            print()
-            print(count(len(self.skipped), "test"), "skipped:")
-            printlist(self.skipped)
-
-        if self.rerun:
-            print()
-            print("%s:" % count(len(self.rerun), "re-run test"))
-            printlist(self.rerun)
-
-        if self.run_no_tests:
-            print()
-            print(count(len(self.run_no_tests), "test"), "run no tests:")
-            printlist(self.run_no_tests)
-
-    def run_tests_sequential(self):
-        if self.ns.trace:
-            import trace
-            self.tracer = trace.Trace(trace=False, count=True)
-
-        save_modules = sys.modules.keys()
-
-        msg = "Run tests sequentially"
-        if self.ns.timeout:
-            msg += " (timeout: %s)" % format_duration(self.ns.timeout)
+        print(f"== Tests result: {state} ==")
+
+        self.results.display_result(runtests.tests,
+                                    self.quiet, self.print_slowest)
+
+    def run_test(
+        self, test_name: TestName, runtests: RunTests, tracer: trace.Trace | None
+    ) -> TestResult:
+        if tracer is not None:
+            # If we're tracing code coverage, then we don't exit with status
+            # if on a false return value from main.
+            cmd = ('result = run_single_test(test_name, runtests)')
+            namespace = dict(locals())
+            tracer.runctx(cmd, globals=globals(), locals=namespace)
+            result = namespace['result']
+            # Mypy doesn't know about this attribute yet,
+            # but it will do soon: https://github.com/python/typeshed/pull/11091
+            result.covered_lines = list(tracer.counts)  # type: ignore[attr-defined]
+        else:
+            result = run_single_test(test_name, runtests)
+
+        self.results.accumulate_result(result, runtests)
+
+        return result
+
+    def run_tests_sequentially(self, runtests) -> None:
+        if self.coverage:
+            tracer = trace.Trace(trace=False, count=True)
+        else:
+            tracer = None
+
+        save_modules = set(sys.modules)
+
+        jobs = runtests.get_jobs()
+        if jobs is not None:
+            tests = count(jobs, 'test')
+        else:
+            tests = 'tests'
+        msg = f"Run {tests} sequentially"
+        if runtests.timeout:
+            msg += " (timeout: %s)" % format_duration(runtests.timeout)
         self.log(msg)
 
         previous_test = None
-        for test_index, test_name in enumerate(self.tests, 1):
-            start_time = time.monotonic()
+        tests_iter = runtests.iter_tests()
+        for test_index, test_name in enumerate(tests_iter, 1):
+            start_time = time.perf_counter()
 
             text = test_name
             if previous_test:
                 text = '%s -- %s' % (text, previous_test)
-            self.display_progress(test_index, text)
-
-            if self.tracer:
-                # If we're tracing code coverage, then we don't exit with status
-                # if on a false return value from main.
-                cmd = ('result = runtest(self.ns, test_name); '
-                       'self.accumulate_result(result)')
-                ns = dict(locals())
-                self.tracer.runctx(cmd, globals=globals(), locals=ns)
-                result = ns['result']
-            else:
-                result = runtest(self.ns, test_name)
-                self.accumulate_result(result)
+            self.logger.display_progress(test_index, text)
+
+            result = self.run_test(test_name, runtests, tracer)
+
+            # Unload the newly imported test modules (best effort finalization)
+            new_modules = [module for module in sys.modules
+                           if module not in save_modules and
+                                module.startswith(("test.", "test_"))]
+            for module in new_modules:
+                sys.modules.pop(module, None)
+                # Remove the attribute of the parent module.
+                parent, _, name = module.rpartition('.')
+                try:
+                    delattr(sys.modules[parent], name)
+                except (KeyError, AttributeError):
+                    pass
 
-            if isinstance(result, Interrupted):
+            if result.must_stop(self.fail_fast, self.fail_env_changed):
                 break
 
             previous_test = str(result)
-            test_time = time.monotonic() - start_time
+            test_time = time.perf_counter() - start_time
             if test_time >= PROGRESS_MIN_TIME:
                 previous_test = "%s in %s" % (previous_test, format_duration(test_time))
-            elif isinstance(result, Passed):
+            elif result.state == State.PASSED:
                 # be quiet: say nothing if the test passed shortly
                 previous_test = None
 
-            # Unload the newly imported modules (best effort finalization)
-            for module in sys.modules.keys():
-                if module not in save_modules and module.startswith("test."):
-                    support.unload(module)
-
-            if self.ns.failfast and is_failed(result, self.ns):
-                break
-
         if previous_test:
             print(previous_test)
 
-    def _test_forever(self, tests):
-        while True:
-            for test_name in tests:
-                yield test_name
-                if self.bad:
-                    return
-                if self.ns.fail_env_changed and self.environment_changed:
-                    return
-
-    def display_header(self):
-        # Print basic platform information
-        print("==", platform.python_implementation(), *sys.version.split())
-        print("==", platform.platform(aliased=True),
-                      "%s-endian" % sys.byteorder)
-        print("== Python build:", ' '.join(get_build_info()))
-        print("== cwd:", os.getcwd())
-        cpu_count = os.cpu_count()
-        if cpu_count:
-            print("== CPU count:", cpu_count)
-        print("== encodings: locale=%s, FS=%s"
-              % (locale.getencoding(), sys.getfilesystemencoding()))
-
-    def no_tests_run(self):
-        return not any((self.good, self.bad, self.skipped, self.interrupted,
-                        self.environment_changed))
-
-    def get_tests_result(self):
-        result = []
-        if self.bad:
-            result.append("FAILURE")
-        elif self.ns.fail_env_changed and self.environment_changed:
-            result.append("ENV CHANGED")
-        elif self.no_tests_run():
-            result.append("NO TESTS RAN")
-
-        if self.interrupted:
-            result.append("INTERRUPTED")
-
-        if not result:
-            result.append("SUCCESS")
-
-        result = ', '.join(result)
-        if self.first_result:
-            result = '%s then %s' % (self.first_result, result)
-        return result
+    def get_state(self):
+        state = self.results.get_state(self.fail_env_changed)
+        if self.first_state:
+            state = f'{self.first_state} then {state}'
+        return state
 
-    def run_tests(self):
-        # For a partial run, we do not need to clutter the output.
-        if (self.ns.header
-            or not(self.ns.pgo or self.ns.quiet or self.ns.single
-                   or self.tests or self.ns.args)):
-            self.display_header()
-
-        if self.ns.huntrleaks:
-            warmup, repetitions, _ = self.ns.huntrleaks
-            if warmup < 3:
-                msg = ("WARNING: Running tests with --huntrleaks/-R and less than "
-                        "3 warmup repetitions can give false positives!")
-                print(msg, file=sys.stdout, flush=True)
-
-        if self.ns.randomize:
-            print("Using random seed", self.ns.random_seed)
-
-        if self.ns.forever:
-            self.tests = self._test_forever(list(self.selected))
-            self.test_count = ''
-            self.test_count_width = 3
-        else:
-            self.tests = iter(self.selected)
-            self.test_count = '/{}'.format(len(self.selected))
-            self.test_count_width = len(self.test_count) - 1
-
-        if self.ns.use_mp:
-            from test.libregrtest.runtest_mp import run_tests_multiprocess
-            # If we're on windows and this is the parent runner (not a worker),
-            # track the load average.
-            if sys.platform == 'win32' and self.worker_test_name is None:
-                from test.libregrtest.win_utils import WindowsLoadTracker
-
-                try:
-                    self.win_load_tracker = WindowsLoadTracker()
-                except PermissionError as error:
-                    # Standard accounts may not have access to the performance
-                    # counters.
-                    print(f'Failed to create WindowsLoadTracker: {error}')
-
-            try:
-                run_tests_multiprocess(self)
-            finally:
-                if self.win_load_tracker is not None:
-                    self.win_load_tracker.close()
-                    self.win_load_tracker = None
-        else:
-            self.run_tests_sequential()
+    def _run_tests_mp(self, runtests: RunTests, num_workers: int) -> None:
+        from .run_workers import RunWorkers
+        RunWorkers(num_workers, runtests, self.logger, self.results).run()
 
-    def finalize(self):
+    def finalize_tests(self, coverage: trace.CoverageResults | None) -> None:
         if self.next_single_filename:
             if self.next_single_test:
                 with open(self.next_single_filename, 'w') as fp:
@@ -608,195 +380,301 @@ def finalize(self):
             else:
                 os.unlink(self.next_single_filename)
 
-        if self.tracer:
-            r = self.tracer.results()
-            r.write_results(show_missing=True, summary=True,
-                            coverdir=self.ns.coverdir)
-
-        print()
-        duration = time.monotonic() - self.start_time
-        print("Total duration: %s" % format_duration(duration))
-        print("Tests result: %s" % self.get_tests_result())
+        if coverage is not None:
+            # uses a new-in-Python 3.13 keyword argument that mypy doesn't know about yet:
+            coverage.write_results(show_missing=True, summary=True,  # type: ignore[call-arg]
+                                   coverdir=self.coverage_dir,
+                                   ignore_missing_files=True)
 
-        if self.ns.runleaks:
+        if self.want_run_leaks:
             os.system("leaks %d" % os.getpid())
 
-    def save_xml_result(self):
-        if not self.ns.xmlpath and not self.testsuite_xml:
-            return
+        if self.junit_filename:
+            self.results.write_junit(self.junit_filename)
 
-        import xml.etree.ElementTree as ET
-        root = ET.Element("testsuites")
+    def display_summary(self):
+        duration = time.perf_counter() - self.logger.start_time
+        filtered = bool(self.match_tests)
 
-        # Manually count the totals for the overall summary
-        totals = {'tests': 0, 'errors': 0, 'failures': 0}
-        for suite in self.testsuite_xml:
-            root.append(suite)
-            for k in totals:
-                try:
-                    totals[k] += int(suite.get(k, 0))
-                except ValueError:
-                    pass
+        # Total duration
+        print()
+        print("Total duration: %s" % format_duration(duration))
 
-        for k, v in totals.items():
-            root.set(k, str(v))
-
-        xmlpath = os.path.join(os_helper.SAVEDCWD, self.ns.xmlpath)
-        with open(xmlpath, 'wb') as f:
-            for s in ET.tostringlist(root):
-                f.write(s)
-
-    def fix_umask(self):
-        if support.is_emscripten:
-            # Emscripten has default umask 0o777, which breaks some tests.
-            # see https://github.com/emscripten-core/emscripten/issues/17269
-            old_mask = os.umask(0)
-            if old_mask == 0o777:
-                os.umask(0o027)
-            else:
-                os.umask(old_mask)
-
-    def set_temp_dir(self):
-        if self.ns.tempdir:
-            self.tmp_dir = self.ns.tempdir
-
-        if not self.tmp_dir:
-            # When tests are run from the Python build directory, it is best practice
-            # to keep the test files in a subfolder.  This eases the cleanup of leftover
-            # files using the "make distclean" command.
-            if sysconfig.is_python_build():
-                self.tmp_dir = sysconfig.get_config_var('abs_builddir')
-                if self.tmp_dir is None:
-                    # bpo-30284: On Windows, only srcdir is available. Using
-                    # abs_builddir mostly matters on UNIX when building Python
-                    # out of the source tree, especially when the source tree
-                    # is read only.
-                    self.tmp_dir = sysconfig.get_config_var('srcdir')
-                self.tmp_dir = os.path.join(self.tmp_dir, 'build')
-            else:
-                self.tmp_dir = tempfile.gettempdir()
+        self.results.display_summary(self.first_runtests, filtered)
+
+        # Result
+        state = self.get_state()
+        print(f"Result: {state}")
+
+    def create_run_tests(self, tests: TestTuple):
+        return RunTests(
+            tests,
+            fail_fast=self.fail_fast,
+            fail_env_changed=self.fail_env_changed,
+            match_tests=self.match_tests,
+            match_tests_dict=None,
+            rerun=False,
+            forever=self.forever,
+            pgo=self.pgo,
+            pgo_extended=self.pgo_extended,
+            output_on_failure=self.output_on_failure,
+            timeout=self.timeout,
+            verbose=self.verbose,
+            quiet=self.quiet,
+            hunt_refleak=self.hunt_refleak,
+            test_dir=self.test_dir,
+            use_junit=(self.junit_filename is not None),
+            coverage=self.coverage,
+            memory_limit=self.memory_limit,
+            gc_threshold=self.gc_threshold,
+            use_resources=self.use_resources,
+            python_cmd=self.python_cmd,
+            randomize=self.randomize,
+            random_seed=self.random_seed,
+        )
+
+    def _run_tests(self, selected: TestTuple, tests: TestList | None) -> int:
+        if self.hunt_refleak and self.hunt_refleak.warmups < 3:
+            msg = ("WARNING: Running tests with --huntrleaks/-R and "
+                   "less than 3 warmup repetitions can give false positives!")
+            print(msg, file=sys.stdout, flush=True)
+
+        if self.num_workers < 0:
+            # Use all CPUs + 2 extra worker processes for tests
+            # that like to sleep
+            #
+            # os.process.cpu_count() is new in Python 3.13;
+            # mypy doesn't know about it yet
+            self.num_workers = (os.process_cpu_count() or 1) + 2  # type: ignore[attr-defined]
 
-        self.tmp_dir = os.path.abspath(self.tmp_dir)
+        # For a partial run, we do not need to clutter the output.
+        if (self.want_header
+            or not(self.pgo or self.quiet or self.single_test_run
+                   or tests or self.cmdline_args)):
+            display_header(self.use_resources, self.python_cmd)
 
-    def create_temp_dir(self):
-        os.makedirs(self.tmp_dir, exist_ok=True)
+        print("Using random seed:", self.random_seed)
 
-        # Define a writable temp dir that will be used as cwd while running
-        # the tests. The name of the dir includes the pid to allow parallel
-        # testing (see the -j option).
-        # Emscripten and WASI have stubbed getpid(), Emscripten has only
-        # milisecond clock resolution. Use randint() instead.
-        if sys.platform in {"emscripten", "wasi"}:
-            nounce = random.randint(0, 1_000_000)
-        else:
-            nounce = os.getpid()
-        if self.worker_test_name is not None:
-            test_cwd = 'test_python_worker_{}'.format(nounce)
+        runtests = self.create_run_tests(selected)
+        self.first_runtests = runtests
+        self.logger.set_tests(runtests)
+
+        setup_process()
+
+        if self.hunt_refleak and not self.num_workers:
+            # gh-109739: WindowsLoadTracker thread interfers with refleak check
+            use_load_tracker = False
         else:
-            test_cwd = 'test_python_{}'.format(nounce)
-        test_cwd += os_helper.FS_NONASCII
-        test_cwd = os.path.join(self.tmp_dir, test_cwd)
-        return test_cwd
-
-    def cleanup(self):
-        import glob
-
-        path = os.path.join(glob.escape(self.tmp_dir), 'test_python_*')
-        print("Cleanup %s directory" % self.tmp_dir)
-        for name in glob.glob(path):
-            if os.path.isdir(name):
-                print("Remove directory: %s" % name)
-                os_helper.rmtree(name)
+            # WindowsLoadTracker is only needed on Windows
+            use_load_tracker = MS_WINDOWS
+
+        if use_load_tracker:
+            self.logger.start_load_tracker()
+        try:
+            if self.num_workers:
+                self._run_tests_mp(runtests, self.num_workers)
             else:
-                print("Remove file: %s" % name)
-                os_helper.unlink(name)
+                self.run_tests_sequentially(runtests)
 
-    def main(self, tests=None, **kwargs):
-        self.parse_args(kwargs)
+            coverage = self.results.get_coverage_results()
+            self.display_result(runtests)
 
-        self.set_temp_dir()
+            if self.want_rerun and self.results.need_rerun():
+                self.rerun_failed_tests(runtests)
+        finally:
+            if use_load_tracker:
+                self.logger.stop_load_tracker()
 
-        self.fix_umask()
+        self.display_summary()
+        self.finalize_tests(coverage)
 
-        if self.ns.cleanup:
-            self.cleanup()
-            sys.exit(0)
+        return self.results.get_exitcode(self.fail_env_changed,
+                                         self.fail_rerun)
 
-        test_cwd = self.create_temp_dir()
+    def run_tests(self, selected: TestTuple, tests: TestList | None) -> int:
+        os.makedirs(self.tmp_dir, exist_ok=True)
+        work_dir = get_work_dir(self.tmp_dir)
 
-        try:
-            # Run the tests in a context manager that temporarily changes the CWD
-            # to a temporary and writable directory. If it's not possible to
-            # create or change the CWD, the original CWD will be used.
+        # Put a timeout on Python exit
+        with exit_timeout():
+            # Run the tests in a context manager that temporarily changes the
+            # CWD to a temporary and writable directory. If it's not possible
+            # to create or change the CWD, the original CWD will be used.
             # The original CWD is available from os_helper.SAVEDCWD.
-            with os_helper.temp_cwd(test_cwd, quiet=True):
-                # When using multiprocessing, worker processes will use test_cwd
-                # as their parent temporary directory. So when the main process
-                # exit, it removes also subdirectories of worker processes.
-                self.ns.tempdir = test_cwd
-
-                self._main(tests, kwargs)
-        except SystemExit as exc:
-            # bpo-38203: Python can hang at exit in Py_Finalize(), especially
-            # on threading._shutdown() call: put a timeout
-            if threading_helper.can_start_thread:
-                faulthandler.dump_traceback_later(EXIT_TIMEOUT, exit=True)
-
-            sys.exit(exc.code)
+            with os_helper.temp_cwd(work_dir, quiet=True):
+                # When using multiprocessing, worker processes will use
+                # work_dir as their parent temporary directory. So when the
+                # main process exit, it removes also subdirectories of worker
+                # processes.
+                return self._run_tests(selected, tests)
+
+    def _add_cross_compile_opts(self, regrtest_opts):
+        # WASM/WASI buildbot builders pass multiple PYTHON environment
+        # variables such as PYTHONPATH and _PYTHON_HOSTRUNNER.
+        keep_environ = bool(self.python_cmd)
+        environ = None
+
+        # Are we using cross-compilation?
+        cross_compile = is_cross_compiled()
+
+        # Get HOSTRUNNER
+        hostrunner = get_host_runner()
+
+        if cross_compile:
+            # emulate -E, but keep PYTHONPATH + cross compile env vars,
+            # so test executable can load correct sysconfigdata file.
+            keep = {
+                '_PYTHON_PROJECT_BASE',
+                '_PYTHON_HOST_PLATFORM',
+                '_PYTHON_SYSCONFIGDATA_NAME',
+                'PYTHONPATH'
+            }
+            old_environ = os.environ
+            new_environ = {
+                name: value for name, value in os.environ.items()
+                if not name.startswith(('PYTHON', '_PYTHON')) or name in keep
+            }
+            # Only set environ if at least one variable was removed
+            if new_environ != old_environ:
+                environ = new_environ
+            keep_environ = True
+
+        if cross_compile and hostrunner:
+            if self.num_workers == 0:
+                # For now use only two cores for cross-compiled builds;
+                # hostrunner can be expensive.
+                regrtest_opts.extend(['-j', '2'])
+
+            # If HOSTRUNNER is set and -p/--python option is not given, then
+            # use hostrunner to execute python binary for tests.
+            if not self.python_cmd:
+                buildpython = sysconfig.get_config_var("BUILDPYTHON")
+                python_cmd = f"{hostrunner} {buildpython}"
+                regrtest_opts.extend(["--python", python_cmd])
+                keep_environ = True
+
+        return (environ, keep_environ)
+
+    def _add_ci_python_opts(self, python_opts, keep_environ):
+        # --fast-ci and --slow-ci add options to Python:
+        # "-u -W default -bb -E"
+
+        # Unbuffered stdout and stderr
+        if not sys.stdout.write_through:
+            python_opts.append('-u')
+
+        # Add warnings filter 'default'
+        if 'default' not in sys.warnoptions:
+            python_opts.extend(('-W', 'default'))
+
+        # Error on bytes/str comparison
+        if sys.flags.bytes_warning < 2:
+            python_opts.append('-bb')
+
+        if not keep_environ:
+            # Ignore PYTHON* environment variables
+            if not sys.flags.ignore_environment:
+                python_opts.append('-E')
+
+    def _execute_python(self, cmd, environ):
+        # Make sure that messages before execv() are logged
+        sys.stdout.flush()
+        sys.stderr.flush()
+
+        cmd_text = shlex.join(cmd)
+        try:
+            print(f"+ {cmd_text}", flush=True)
 
-    def getloadavg(self):
-        if self.win_load_tracker is not None:
-            return self.win_load_tracker.getloadavg()
+            if hasattr(os, 'execv') and not MS_WINDOWS:
+                os.execv(cmd[0], cmd)
+                # On success, execv() do no return.
+                # On error, it raises an OSError.
+            else:
+                import subprocess
+                with subprocess.Popen(cmd, env=environ) as proc:
+                    try:
+                        proc.wait()
+                    except KeyboardInterrupt:
+                        # There is no need to call proc.terminate(): on CTRL+C,
+                        # SIGTERM is also sent to the child process.
+                        try:
+                            proc.wait(timeout=EXIT_TIMEOUT)
+                        except subprocess.TimeoutExpired:
+                            proc.kill()
+                            proc.wait()
+                            sys.exit(EXITCODE_INTERRUPTED)
+
+                sys.exit(proc.returncode)
+        except Exception as exc:
+            print_warning(f"Failed to change Python options: {exc!r}\n"
+                          f"Command: {cmd_text}")
+            # continue executing main()
+
+    def _add_python_opts(self):
+        python_opts = []
+        regrtest_opts = []
+
+        environ, keep_environ = self._add_cross_compile_opts(regrtest_opts)
+        if self.ci_mode:
+            self._add_ci_python_opts(python_opts, keep_environ)
+
+        if (not python_opts) and (not regrtest_opts) and (environ is None):
+            # Nothing changed: nothing to do
+            return
 
-        if hasattr(os, 'getloadavg'):
-            return os.getloadavg()[0]
+        # Create new command line
+        cmd = list(sys.orig_argv)
+        if python_opts:
+            cmd[1:1] = python_opts
+        if regrtest_opts:
+            cmd.extend(regrtest_opts)
+        cmd.append("--dont-add-python-opts")
 
-        return None
+        self._execute_python(cmd, environ)
 
-    def _main(self, tests, kwargs):
-        if self.worker_test_name is not None:
-            from test.libregrtest.runtest_mp import run_tests_worker
-            run_tests_worker(self.ns, self.worker_test_name)
+    def _init(self):
+        # Set sys.stdout encoder error handler to backslashreplace,
+        # similar to sys.stderr error handler, to avoid UnicodeEncodeError
+        # when printing a traceback or any other non-encodable character.
+        sys.stdout.reconfigure(errors="backslashreplace")
 
-        if self.ns.wait:
-            input("Press any key to continue...")
+        if self.junit_filename and not os.path.isabs(self.junit_filename):
+            self.junit_filename = os.path.abspath(self.junit_filename)
 
-        support.PGO = self.ns.pgo
-        support.PGO_EXTENDED = self.ns.pgo_extended
+        strip_py_suffix(self.cmdline_args)
 
-        setup_tests(self.ns)
+        self.tmp_dir = get_temp_dir(self.tmp_dir)
 
-        self.find_tests(tests)
+    def main(self, tests: TestList | None = None):
+        if self.want_add_python_opts:
+            self._add_python_opts()
 
-        if self.ns.list_tests:
-            self.list_tests()
-            sys.exit(0)
+        self._init()
 
-        if self.ns.list_cases:
-            self.list_cases()
+        if self.want_cleanup:
+            cleanup_temp_dir(self.tmp_dir)
             sys.exit(0)
 
-        self.run_tests()
-        self.display_result()
-
-        if self.ns.verbose2 and self.bad:
-            self.rerun_failed_tests()
+        if self.want_wait:
+            input("Press any key to continue...")
 
-        self.finalize()
+        setup_test_dir(self.test_dir)
+        selected, tests = self.find_tests(tests)
 
-        self.save_xml_result()
+        exitcode = 0
+        if self.want_list_tests:
+            self.list_tests(selected)
+        elif self.want_list_cases:
+            list_cases(selected,
+                       match_tests=self.match_tests,
+                       test_dir=self.test_dir)
+        else:
+            exitcode = self.run_tests(selected, tests)
 
-        if self.bad:
-            sys.exit(EXITCODE_BAD_TEST)
-        if self.interrupted:
-            sys.exit(EXITCODE_INTERRUPTED)
-        if self.ns.fail_env_changed and self.environment_changed:
-            sys.exit(EXITCODE_ENV_CHANGED)
-        if self.no_tests_run():
-            sys.exit(EXITCODE_NO_TESTS_RAN)
-        sys.exit(0)
+        sys.exit(exitcode)
 
 
-def main(tests=None, **kwargs):
+def main(tests=None, _add_python_opts=False, **kwargs):
     """Run the Python suite."""
-    Regrtest().main(tests=tests, **kwargs)
+    ns = _parse_args(sys.argv[1:], **kwargs)
+    Regrtest(ns, _add_python_opts=_add_python_opts).main(tests=tests)
diff --git a/Lib/test/libregrtest/mypy.ini b/Lib/test/libregrtest/mypy.ini
new file mode 100644
index 00000000000000..22c7c7a9acef14
--- /dev/null
+++ b/Lib/test/libregrtest/mypy.ini
@@ -0,0 +1,33 @@
+# Config file for running mypy on libregrtest.
+# Run mypy by invoking `mypy --config-file Lib/test/libregrtest/mypy.ini`
+# on the command-line from the repo root
+
+[mypy]
+files = Lib/test/libregrtest
+explicit_package_bases = True
+python_version = 3.12
+platform = linux
+pretty = True
+
+# Enable most stricter settings
+enable_error_code = ignore-without-code
+strict = True
+
+# Various stricter settings that we can't yet enable
+# Try to enable these in the following order:
+disallow_any_generics = False
+disallow_incomplete_defs = False
+disallow_untyped_calls = False
+disallow_untyped_defs = False
+check_untyped_defs = False
+warn_return_any = False
+
+disable_error_code = return
+
+# Enable --strict-optional for these ASAP:
+[mypy-Lib.test.libregrtest.main.*,Lib.test.libregrtest.run_workers.*]
+strict_optional = False
+
+# Various internal modules that typeshed deliberately doesn't have stubs for:
+[mypy-_abc.*,_opcode.*,_overlapped.*,_testcapi.*,_testinternalcapi.*,test.*]
+ignore_missing_imports = True
diff --git a/Lib/test/libregrtest/pgo.py b/Lib/test/libregrtest/pgo.py
index 42ce5fba7a97c3..e3a6927be5db1d 100644
--- a/Lib/test/libregrtest/pgo.py
+++ b/Lib/test/libregrtest/pgo.py
@@ -42,15 +42,15 @@
     'test_set',
     'test_sqlite3',
     'test_statistics',
+    'test_str',
     'test_struct',
     'test_tabnanny',
     'test_time',
-    'test_unicode',
     'test_xml_etree',
     'test_xml_etree_c',
 ]
 
-def setup_pgo_tests(ns):
-    if not ns.args and not ns.pgo_extended:
+def setup_pgo_tests(cmdline_args, pgo_extended: bool):
+    if not cmdline_args and not pgo_extended:
         # run default set of tests for PGO training
-        ns.args = PGO_TESTS[:]
+        cmdline_args[:] = PGO_TESTS[:]
diff --git a/Lib/test/libregrtest/refleak.py b/Lib/test/libregrtest/refleak.py
index cd11d385591f80..5836a8421cb42d 100644
--- a/Lib/test/libregrtest/refleak.py
+++ b/Lib/test/libregrtest/refleak.py
@@ -1,10 +1,13 @@
-import os
 import sys
 import warnings
 from inspect import isabstract
+from typing import Any
+
 from test import support
 from test.support import os_helper
-from test.libregrtest.utils import clear_caches
+
+from .runtests import HuntRefleak
+from .utils import clear_caches
 
 try:
     from _abc import _get_dump
@@ -19,7 +22,9 @@ def _get_dump(cls):
                 cls._abc_negative_cache, cls._abc_negative_cache_version)
 
 
-def dash_R(ns, test_name, test_func):
+def runtest_refleak(test_name, test_func,
+                    hunt_refleak: HuntRefleak,
+                    quiet: bool):
     """Run a test multiple times, looking for reference leaks.
 
     Returns:
@@ -41,12 +46,14 @@ def dash_R(ns, test_name, test_func):
     fs = warnings.filters[:]
     ps = copyreg.dispatch_table.copy()
     pic = sys.path_importer_cache.copy()
+    zdc: dict[str, Any] | None
     try:
         import zipimport
     except ImportError:
         zdc = None # Run unmodified on platforms without zipimport support
     else:
-        zdc = zipimport._zip_directory_cache.copy()
+        # private attribute that mypy doesn't know about:
+        zdc = zipimport._zip_directory_cache.copy()  # type: ignore[attr-defined]
     abcs = {}
     for abc in [getattr(collections.abc, a) for a in collections.abc.__all__]:
         if not isabstract(abc):
@@ -62,9 +69,10 @@ def dash_R(ns, test_name, test_func):
     def get_pooled_int(value):
         return int_pool.setdefault(value, value)
 
-    nwarmup, ntracked, fname = ns.huntrleaks
-    fname = os.path.join(os_helper.SAVEDCWD, fname)
-    repcount = nwarmup + ntracked
+    warmups = hunt_refleak.warmups
+    runs = hunt_refleak.runs
+    filename = hunt_refleak.filename
+    repcount = warmups + runs
 
     # Pre-allocate to ensure that the loop doesn't allocate anything new
     rep_range = list(range(repcount))
@@ -78,16 +86,17 @@ def get_pooled_int(value):
     # initialize variables to make pyflakes quiet
     rc_before = alloc_before = fd_before = interned_before = 0
 
-    if not ns.quiet:
+    if not quiet:
         print("beginning", repcount, "repetitions", file=sys.stderr)
         print(("1234567890"*(repcount//10 + 1))[:repcount], file=sys.stderr,
               flush=True)
 
+    results = None
     dash_R_cleanup(fs, ps, pic, zdc, abcs)
     support.gc_collect()
 
     for i in rep_range:
-        test_func()
+        results = test_func()
 
         dash_R_cleanup(fs, ps, pic, zdc, abcs)
         support.gc_collect()
@@ -101,7 +110,7 @@ def get_pooled_int(value):
         rc_after = gettotalrefcount() - interned_after * 2
         fd_after = fd_count()
 
-        if not ns.quiet:
+        if not quiet:
             print('.', end='', file=sys.stderr, flush=True)
 
         rc_deltas[i] = get_pooled_int(rc_after - rc_before)
@@ -113,7 +122,7 @@ def get_pooled_int(value):
         fd_before = fd_after
         interned_before = interned_after
 
-    if not ns.quiet:
+    if not quiet:
         print(file=sys.stderr)
 
     # These checkers return False on success, True on failure
@@ -142,16 +151,16 @@ def check_fd_deltas(deltas):
         (fd_deltas, 'file descriptors', check_fd_deltas)
     ]:
         # ignore warmup runs
-        deltas = deltas[nwarmup:]
+        deltas = deltas[warmups:]
         if checker(deltas):
             msg = '%s leaked %s %s, sum=%s' % (
                 test_name, deltas, item_name, sum(deltas))
             print(msg, file=sys.stderr, flush=True)
-            with open(fname, "a", encoding="utf-8") as refrep:
+            with open(filename, "a", encoding="utf-8") as refrep:
                 print(msg, file=refrep)
                 refrep.flush()
             failed = True
-    return failed
+    return (failed, results)
 
 
 def dash_R_cleanup(fs, ps, pic, zdc, abcs):
diff --git a/Lib/test/libregrtest/result.py b/Lib/test/libregrtest/result.py
new file mode 100644
index 00000000000000..74eae40440435d
--- /dev/null
+++ b/Lib/test/libregrtest/result.py
@@ -0,0 +1,224 @@
+import dataclasses
+import json
+from typing import Any
+
+from .utils import (
+    StrJSON, TestName, FilterTuple,
+    format_duration, normalize_test_name, print_warning)
+
+
+@dataclasses.dataclass(slots=True)
+class TestStats:
+    tests_run: int = 0
+    failures: int = 0
+    skipped: int = 0
+
+    @staticmethod
+    def from_unittest(result):
+        return TestStats(result.testsRun,
+                         len(result.failures),
+                         len(result.skipped))
+
+    @staticmethod
+    def from_doctest(results):
+        return TestStats(results.attempted,
+                         results.failed,
+                         results.skipped)
+
+    def accumulate(self, stats):
+        self.tests_run += stats.tests_run
+        self.failures += stats.failures
+        self.skipped += stats.skipped
+
+
+# Avoid enum.Enum to reduce the number of imports when tests are run
+class State:
+    PASSED = "PASSED"
+    FAILED = "FAILED"
+    SKIPPED = "SKIPPED"
+    UNCAUGHT_EXC = "UNCAUGHT_EXC"
+    REFLEAK = "REFLEAK"
+    ENV_CHANGED = "ENV_CHANGED"
+    RESOURCE_DENIED = "RESOURCE_DENIED"
+    INTERRUPTED = "INTERRUPTED"
+    WORKER_FAILED = "WORKER_FAILED"   # non-zero worker process exit code
+    WORKER_BUG = "WORKER_BUG"         # exception when running a worker
+    DID_NOT_RUN = "DID_NOT_RUN"
+    TIMEOUT = "TIMEOUT"
+
+    @staticmethod
+    def is_failed(state):
+        return state in {
+            State.FAILED,
+            State.UNCAUGHT_EXC,
+            State.REFLEAK,
+            State.WORKER_FAILED,
+            State.WORKER_BUG,
+            State.TIMEOUT}
+
+    @staticmethod
+    def has_meaningful_duration(state):
+        # Consider that the duration is meaningless for these cases.
+        # For example, if a whole test file is skipped, its duration
+        # is unlikely to be the duration of executing its tests,
+        # but just the duration to execute code which skips the test.
+        return state not in {
+            State.SKIPPED,
+            State.RESOURCE_DENIED,
+            State.INTERRUPTED,
+            State.WORKER_FAILED,
+            State.WORKER_BUG,
+            State.DID_NOT_RUN}
+
+    @staticmethod
+    def must_stop(state):
+        return state in {
+            State.INTERRUPTED,
+            State.WORKER_BUG,
+        }
+
+
+FileName = str
+LineNo = int
+Location = tuple[FileName, LineNo]
+
+
+@dataclasses.dataclass(slots=True)
+class TestResult:
+    test_name: TestName
+    state: str | None = None
+    # Test duration in seconds
+    duration: float | None = None
+    xml_data: list[str] | None = None
+    stats: TestStats | None = None
+
+    # errors and failures copied from support.TestFailedWithDetails
+    errors: list[tuple[str, str]] | None = None
+    failures: list[tuple[str, str]] | None = None
+
+    # partial coverage in a worker run; not used by sequential in-process runs
+    covered_lines: list[Location] | None = None
+
+    def is_failed(self, fail_env_changed: bool) -> bool:
+        if self.state == State.ENV_CHANGED:
+            return fail_env_changed
+        return State.is_failed(self.state)
+
+    def _format_failed(self):
+        if self.errors and self.failures:
+            le = len(self.errors)
+            lf = len(self.failures)
+            error_s = "error" + ("s" if le > 1 else "")
+            failure_s = "failure" + ("s" if lf > 1 else "")
+            return f"{self.test_name} failed ({le} {error_s}, {lf} {failure_s})"
+
+        if self.errors:
+            le = len(self.errors)
+            error_s = "error" + ("s" if le > 1 else "")
+            return f"{self.test_name} failed ({le} {error_s})"
+
+        if self.failures:
+            lf = len(self.failures)
+            failure_s = "failure" + ("s" if lf > 1 else "")
+            return f"{self.test_name} failed ({lf} {failure_s})"
+
+        return f"{self.test_name} failed"
+
+    def __str__(self) -> str:
+        match self.state:
+            case State.PASSED:
+                return f"{self.test_name} passed"
+            case State.FAILED:
+                return self._format_failed()
+            case State.SKIPPED:
+                return f"{self.test_name} skipped"
+            case State.UNCAUGHT_EXC:
+                return f"{self.test_name} failed (uncaught exception)"
+            case State.REFLEAK:
+                return f"{self.test_name} failed (reference leak)"
+            case State.ENV_CHANGED:
+                return f"{self.test_name} failed (env changed)"
+            case State.RESOURCE_DENIED:
+                return f"{self.test_name} skipped (resource denied)"
+            case State.INTERRUPTED:
+                return f"{self.test_name} interrupted"
+            case State.WORKER_FAILED:
+                return f"{self.test_name} worker non-zero exit code"
+            case State.WORKER_BUG:
+                return f"{self.test_name} worker bug"
+            case State.DID_NOT_RUN:
+                return f"{self.test_name} ran no tests"
+            case State.TIMEOUT:
+                return f"{self.test_name} timed out ({format_duration(self.duration)})"
+            case _:
+                raise ValueError("unknown result state: {state!r}")
+
+    def has_meaningful_duration(self):
+        return State.has_meaningful_duration(self.state)
+
+    def set_env_changed(self):
+        if self.state is None or self.state == State.PASSED:
+            self.state = State.ENV_CHANGED
+
+    def must_stop(self, fail_fast: bool, fail_env_changed: bool) -> bool:
+        if State.must_stop(self.state):
+            return True
+        if fail_fast and self.is_failed(fail_env_changed):
+            return True
+        return False
+
+    def get_rerun_match_tests(self) -> FilterTuple | None:
+        match_tests = []
+
+        errors = self.errors or []
+        failures = self.failures or []
+        for error_list, is_error in (
+            (errors, True),
+            (failures, False),
+        ):
+            for full_name, *_ in error_list:
+                match_name = normalize_test_name(full_name, is_error=is_error)
+                if match_name is None:
+                    # 'setUpModule (test.test_sys)': don't filter tests
+                    return None
+                if not match_name:
+                    error_type = "ERROR" if is_error else "FAIL"
+                    print_warning(f"rerun failed to parse {error_type} test name: "
+                                  f"{full_name!r}: don't filter tests")
+                    return None
+                match_tests.append(match_name)
+
+        if not match_tests:
+            return None
+        return tuple(match_tests)
+
+    def write_json_into(self, file) -> None:
+        json.dump(self, file, cls=_EncodeTestResult)
+
+    @staticmethod
+    def from_json(worker_json: StrJSON) -> 'TestResult':
+        return json.loads(worker_json, object_hook=_decode_test_result)
+
+
+class _EncodeTestResult(json.JSONEncoder):
+    def default(self, o: Any) -> dict[str, Any]:
+        if isinstance(o, TestResult):
+            result = dataclasses.asdict(o)
+            result["__test_result__"] = o.__class__.__name__
+            return result
+        else:
+            return super().default(o)
+
+
+def _decode_test_result(data: dict[str, Any]) -> TestResult | dict[str, Any]:
+    if "__test_result__" in data:
+        data.pop('__test_result__')
+        if data['stats'] is not None:
+            data['stats'] = TestStats(**data['stats'])
+        if data['covered_lines'] is not None:
+            data['covered_lines'] = [
+                tuple(loc) for loc in data['covered_lines']
+            ]
+        return TestResult(**data)
+    else:
+        return data
diff --git a/Lib/test/libregrtest/results.py b/Lib/test/libregrtest/results.py
new file mode 100644
index 00000000000000..a41ea8aba028c3
--- /dev/null
+++ b/Lib/test/libregrtest/results.py
@@ -0,0 +1,271 @@
+import sys
+import trace
+
+from .runtests import RunTests
+from .result import State, TestResult, TestStats, Location
+from .utils import (
+    StrPath, TestName, TestTuple, TestList, FilterDict,
+    printlist, count, format_duration)
+
+
+# Python uses exit code 1 when an exception is not caught
+# argparse.ArgumentParser.error() uses exit code 2
+EXITCODE_BAD_TEST = 2
+EXITCODE_ENV_CHANGED = 3
+EXITCODE_NO_TESTS_RAN = 4
+EXITCODE_RERUN_FAIL = 5
+EXITCODE_INTERRUPTED = 130   # 128 + signal.SIGINT=2
+
+
+class TestResults:
+    def __init__(self):
+        self.bad: TestList = []
+        self.good: TestList = []
+        self.rerun_bad: TestList = []
+        self.skipped: TestList = []
+        self.resource_denied: TestList = []
+        self.env_changed: TestList = []
+        self.run_no_tests: TestList = []
+        self.rerun: TestList = []
+        self.rerun_results: list[TestResult] = []
+
+        self.interrupted: bool = False
+        self.worker_bug: bool = False
+        self.test_times: list[tuple[float, TestName]] = []
+        self.stats = TestStats()
+        # used by --junit-xml
+        self.testsuite_xml: list = []
+        # used by -T with -j
+        self.covered_lines: set[Location] = set()
+
+    def is_all_good(self):
+        return (not self.bad
+                and not self.skipped
+                and not self.interrupted
+                and not self.worker_bug)
+
+    def get_executed(self):
+        return (set(self.good) | set(self.bad) | set(self.skipped)
+                | set(self.resource_denied) | set(self.env_changed)
+                | set(self.run_no_tests))
+
+    def no_tests_run(self):
+        return not any((self.good, self.bad, self.skipped, self.interrupted,
+                        self.env_changed))
+
+    def get_state(self, fail_env_changed):
+        state = []
+        if self.bad:
+            state.append("FAILURE")
+        elif fail_env_changed and self.env_changed:
+            state.append("ENV CHANGED")
+        elif self.no_tests_run():
+            state.append("NO TESTS RAN")
+
+        if self.interrupted:
+            state.append("INTERRUPTED")
+        if self.worker_bug:
+            state.append("WORKER BUG")
+        if not state:
+            state.append("SUCCESS")
+
+        return ', '.join(state)
+
+    def get_exitcode(self, fail_env_changed, fail_rerun):
+        exitcode = 0
+        if self.bad:
+            exitcode = EXITCODE_BAD_TEST
+        elif self.interrupted:
+            exitcode = EXITCODE_INTERRUPTED
+        elif fail_env_changed and self.env_changed:
+            exitcode = EXITCODE_ENV_CHANGED
+        elif self.no_tests_run():
+            exitcode = EXITCODE_NO_TESTS_RAN
+        elif fail_rerun and self.rerun:
+            exitcode = EXITCODE_RERUN_FAIL
+        elif self.worker_bug:
+            exitcode = EXITCODE_BAD_TEST
+        return exitcode
+
+    def accumulate_result(self, result: TestResult, runtests: RunTests):
+        test_name = result.test_name
+        rerun = runtests.rerun
+        fail_env_changed = runtests.fail_env_changed
+
+        match result.state:
+            case State.PASSED:
+                self.good.append(test_name)
+            case State.ENV_CHANGED:
+                self.env_changed.append(test_name)
+                self.rerun_results.append(result)
+            case State.SKIPPED:
+                self.skipped.append(test_name)
+            case State.RESOURCE_DENIED:
+                self.resource_denied.append(test_name)
+            case State.INTERRUPTED:
+                self.interrupted = True
+            case State.DID_NOT_RUN:
+                self.run_no_tests.append(test_name)
+            case _:
+                if result.is_failed(fail_env_changed):
+                    self.bad.append(test_name)
+                    self.rerun_results.append(result)
+                else:
+                    raise ValueError(f"invalid test state: {result.state!r}")
+
+        if result.state == State.WORKER_BUG:
+            self.worker_bug = True
+
+        if result.has_meaningful_duration() and not rerun:
+            if result.duration is None:
+                raise ValueError("result.duration is None")
+            self.test_times.append((result.duration, test_name))
+        if result.stats is not None:
+            self.stats.accumulate(result.stats)
+        if rerun:
+            self.rerun.append(test_name)
+        if result.covered_lines:
+            # we don't care about trace counts so we don't have to sum them up
+            self.covered_lines.update(result.covered_lines)
+        xml_data = result.xml_data
+        if xml_data:
+            self.add_junit(xml_data)
+
+    def get_coverage_results(self) -> trace.CoverageResults:
+        counts = {loc: 1 for loc in self.covered_lines}
+        return trace.CoverageResults(counts=counts)
+
+    def need_rerun(self):
+        return bool(self.rerun_results)
+
+    def prepare_rerun(self) -> tuple[TestTuple, FilterDict]:
+        tests: TestList = []
+        match_tests_dict = {}
+        for result in self.rerun_results:
+            tests.append(result.test_name)
+
+            match_tests = result.get_rerun_match_tests()
+            # ignore empty match list
+            if match_tests:
+                match_tests_dict[result.test_name] = match_tests
+
+        # Clear previously failed tests
+        self.rerun_bad.extend(self.bad)
+        self.bad.clear()
+        self.env_changed.clear()
+        self.rerun_results.clear()
+
+        return (tuple(tests), match_tests_dict)
+
+    def add_junit(self, xml_data: list[str]):
+        import xml.etree.ElementTree as ET
+        for e in xml_data:
+            try:
+                self.testsuite_xml.append(ET.fromstring(e))
+            except ET.ParseError:
+                print(xml_data, file=sys.__stderr__)
+                raise
+
+    def write_junit(self, filename: StrPath):
+        if not self.testsuite_xml:
+            # Don't create empty XML file
+            return
+
+        import xml.etree.ElementTree as ET
+        root = ET.Element("testsuites")
+
+        # Manually count the totals for the overall summary
+        totals = {'tests': 0, 'errors': 0, 'failures': 0}
+        for suite in self.testsuite_xml:
+            root.append(suite)
+            for k in totals:
+                try:
+                    totals[k] += int(suite.get(k, 0))
+                except ValueError:
+                    pass
+
+        for k, v in totals.items():
+            root.set(k, str(v))
+
+        with open(filename, 'wb') as f:
+            for s in ET.tostringlist(root):
+                f.write(s)
+
+    def display_result(self, tests: TestTuple, quiet: bool, print_slowest: bool):
+        if print_slowest:
+            self.test_times.sort(reverse=True)
+            print()
+            print("10 slowest tests:")
+            for test_time, test in self.test_times[:10]:
+                print("- %s: %s" % (test, format_duration(test_time)))
+
+        all_tests = []
+        omitted = set(tests) - self.get_executed()
+
+        # less important
+        all_tests.append((omitted, "test", "{} omitted:"))
+        if not quiet:
+            all_tests.append((self.skipped, "test", "{} skipped:"))
+            all_tests.append((self.resource_denied, "test", "{} skipped (resource denied):"))
+        all_tests.append((self.run_no_tests, "test", "{} run no tests:"))
+
+        # more important
+        all_tests.append((self.env_changed, "test", "{} altered the execution environment (env changed):"))
+        all_tests.append((self.rerun, "re-run test", "{}:"))
+        all_tests.append((self.bad, "test", "{} failed:"))
+
+        for tests_list, count_text, title_format in all_tests:
+            if tests_list:
+                print()
+                count_text = count(len(tests_list), count_text)
+                print(title_format.format(count_text))
+                printlist(tests_list)
+
+        if self.good and not quiet:
+            print()
+            text = count(len(self.good), "test")
+            text = f"{text} OK."
+            if (self.is_all_good() and len(self.good) > 1):
+                text = f"All {text}"
+            print(text)
+
+        if self.interrupted:
+            print()
+            print("Test suite interrupted by signal SIGINT.")
+
+    def display_summary(self, first_runtests: RunTests, filtered: bool):
+        # Total tests
+        stats = self.stats
+        text = f'run={stats.tests_run:,}'
+        if filtered:
+            text = f"{text} (filtered)"
+        report = [text]
+        if stats.failures:
+            report.append(f'failures={stats.failures:,}')
+        if stats.skipped:
+            report.append(f'skipped={stats.skipped:,}')
+        print(f"Total tests: {' '.join(report)}")
+
+        # Total test files
+        all_tests = [self.good, self.bad, self.rerun,
+                     self.skipped,
+                     self.env_changed, self.run_no_tests]
+        run = sum(map(len, all_tests))
+        text = f'run={run}'
+        if not first_runtests.forever:
+            ntest = len(first_runtests.tests)
+            text = f"{text}/{ntest}"
+        if filtered:
+            text = f"{text} (filtered)"
+        report = [text]
+        for name, tests in (
+            ('failed', self.bad),
+            ('env_changed', self.env_changed),
+            ('skipped', self.skipped),
+            ('resource_denied', self.resource_denied),
+            ('rerun', self.rerun),
+            ('run_no_tests', self.run_no_tests),
+        ):
+            if tests:
+                report.append(f'{name}={len(tests)}')
+        print(f"Total test files: {' '.join(report)}")
diff --git a/Lib/test/libregrtest/run_workers.py b/Lib/test/libregrtest/run_workers.py
new file mode 100644
index 00000000000000..18a0342f0611cf
--- /dev/null
+++ b/Lib/test/libregrtest/run_workers.py
@@ -0,0 +1,608 @@
+import contextlib
+import dataclasses
+import faulthandler
+import os.path
+import queue
+import signal
+import subprocess
+import sys
+import tempfile
+import threading
+import time
+import traceback
+from typing import Any, Literal, TextIO
+
+from test import support
+from test.support import os_helper, MS_WINDOWS
+
+from .logger import Logger
+from .result import TestResult, State
+from .results import TestResults
+from .runtests import RunTests, WorkerRunTests, JsonFile, JsonFileType
+from .single import PROGRESS_MIN_TIME
+from .utils import (
+    StrPath, TestName,
+    format_duration, print_warning, count, plural, get_signal_name)
+from .worker import create_worker_process, USE_PROCESS_GROUP
+
+if MS_WINDOWS:
+    import locale
+    import msvcrt
+
+
+
+# Display the running tests if nothing happened last N seconds
+PROGRESS_UPDATE = 30.0   # seconds
+assert PROGRESS_UPDATE >= PROGRESS_MIN_TIME
+
+# Kill the main process after 5 minutes. It is supposed to write an update
+# every PROGRESS_UPDATE seconds. Tolerate 5 minutes for Python slowest
+# buildbot workers.
+MAIN_PROCESS_TIMEOUT = 5 * 60.0
+assert MAIN_PROCESS_TIMEOUT >= PROGRESS_UPDATE
+
+# Time to wait until a worker completes: should be immediate
+WAIT_COMPLETED_TIMEOUT = 30.0   # seconds
+
+# Time to wait a killed process (in seconds)
+WAIT_KILLED_TIMEOUT = 60.0
+
+
+# We do not use a generator so multiple threads can call next().
+class MultiprocessIterator:
+
+    """A thread-safe iterator over tests for multiprocess mode."""
+
+    def __init__(self, tests_iter):
+        self.lock = threading.Lock()
+        self.tests_iter = tests_iter
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        with self.lock:
+            if self.tests_iter is None:
+                raise StopIteration
+            return next(self.tests_iter)
+
+    def stop(self):
+        with self.lock:
+            self.tests_iter = None
+
+
+@dataclasses.dataclass(slots=True, frozen=True)
+class MultiprocessResult:
+    result: TestResult
+    # bpo-45410: stderr is written into stdout to keep messages order
+    worker_stdout: str | None = None
+    err_msg: str | None = None
+
+
+ExcStr = str
+QueueOutput = tuple[Literal[False], MultiprocessResult] | tuple[Literal[True], ExcStr]
+
+
+class ExitThread(Exception):
+    pass
+
+
+class WorkerError(Exception):
+    def __init__(self,
+                 test_name: TestName,
+                 err_msg: str | None,
+                 stdout: str | None,
+                 state: str):
+        result = TestResult(test_name, state=state)
+        self.mp_result = MultiprocessResult(result, stdout, err_msg)
+        super().__init__()
+
+
+class WorkerThread(threading.Thread):
+    def __init__(self, worker_id: int, runner: "RunWorkers") -> None:
+        super().__init__()
+        self.worker_id = worker_id
+        self.runtests = runner.runtests
+        self.pending = runner.pending
+        self.output = runner.output
+        self.timeout = runner.worker_timeout
+        self.log = runner.log
+        self.test_name: TestName | None = None
+        self.start_time: float | None = None
+        self._popen: subprocess.Popen[str] | None = None
+        self._killed = False
+        self._stopped = False
+
+    def __repr__(self) -> str:
+        info = [f'WorkerThread #{self.worker_id}']
+        if self.is_alive():
+            info.append("running")
+        else:
+            info.append('stopped')
+        test = self.test_name
+        if test:
+            info.append(f'test={test}')
+        popen = self._popen
+        if popen is not None:
+            dt = time.monotonic() - self.start_time
+            info.extend((f'pid={self._popen.pid}',
+                         f'time={format_duration(dt)}'))
+        return '<%s>' % ' '.join(info)
+
+    def _kill(self) -> None:
+        popen = self._popen
+        if popen is None:
+            return
+
+        if self._killed:
+            return
+        self._killed = True
+
+        if USE_PROCESS_GROUP:
+            what = f"{self} process group"
+        else:
+            what = f"{self} process"
+
+        print(f"Kill {what}", file=sys.stderr, flush=True)
+        try:
+            if USE_PROCESS_GROUP:
+                os.killpg(popen.pid, signal.SIGKILL)
+            else:
+                popen.kill()
+        except ProcessLookupError:
+            # popen.kill(): the process completed, the WorkerThread thread
+            # read its exit status, but Popen.send_signal() read the returncode
+            # just before Popen.wait() set returncode.
+            pass
+        except OSError as exc:
+            print_warning(f"Failed to kill {what}: {exc!r}")
+
+    def stop(self) -> None:
+        # Method called from a different thread to stop this thread
+        self._stopped = True
+        self._kill()
+
+    def _run_process(self, runtests: WorkerRunTests, output_fd: int,
+                     tmp_dir: StrPath | None = None) -> int | None:
+        popen = create_worker_process(runtests, output_fd, tmp_dir)
+        self._popen = popen
+        self._killed = False
+
+        try:
+            if self._stopped:
+                # If kill() has been called before self._popen is set,
+                # self._popen is still running. Call again kill()
+                # to ensure that the process is killed.
+                self._kill()
+                raise ExitThread
+
+            try:
+                # gh-94026: stdout+stderr are written to tempfile
+                retcode = popen.wait(timeout=self.timeout)
+                assert retcode is not None
+                return retcode
+            except subprocess.TimeoutExpired:
+                if self._stopped:
+                    # kill() has been called: communicate() fails on reading
+                    # closed stdout
+                    raise ExitThread
+
+                # On timeout, kill the process
+                self._kill()
+
+                # None means TIMEOUT for the caller
+                retcode = None
+                # bpo-38207: Don't attempt to call communicate() again: on it
+                # can hang until all child processes using stdout
+                # pipes completes.
+            except OSError:
+                if self._stopped:
+                    # kill() has been called: communicate() fails
+                    # on reading closed stdout
+                    raise ExitThread
+                raise
+        except:
+            self._kill()
+            raise
+        finally:
+            self._wait_completed()
+            self._popen = None
+
+    def create_stdout(self, stack: contextlib.ExitStack) -> TextIO:
+        """Create stdout temporay file (file descriptor)."""
+
+        if MS_WINDOWS:
+            # gh-95027: When stdout is not a TTY, Python uses the ANSI code
+            # page for the sys.stdout encoding. If the main process runs in a
+            # terminal, sys.stdout uses WindowsConsoleIO with UTF-8 encoding.
+            encoding = locale.getencoding()
+        else:
+            encoding = sys.stdout.encoding
+
+        # gh-94026: Write stdout+stderr to a tempfile as workaround for
+        # non-blocking pipes on Emscripten with NodeJS.
+        # gh-109425: Use "backslashreplace" error handler: log corrupted
+        # stdout+stderr, instead of failing with a UnicodeDecodeError and not
+        # logging stdout+stderr at all.
+        stdout_file = tempfile.TemporaryFile('w+',
+                                             encoding=encoding,
+                                             errors='backslashreplace')
+        stack.enter_context(stdout_file)
+        return stdout_file
+
+    def create_json_file(self, stack: contextlib.ExitStack) -> tuple[JsonFile, TextIO | None]:
+        """Create JSON file."""
+
+        json_file_use_stdout = self.runtests.json_file_use_stdout()
+        if json_file_use_stdout:
+            json_file = JsonFile(None, JsonFileType.STDOUT)
+            json_tmpfile = None
+        else:
+            json_tmpfile = tempfile.TemporaryFile('w+', encoding='utf8')
+            stack.enter_context(json_tmpfile)
+
+            json_fd = json_tmpfile.fileno()
+            if MS_WINDOWS:
+                # The msvcrt module is only available on Windows;
+                # we run mypy with `--platform=linux` in CI
+                json_handle: int = msvcrt.get_osfhandle(json_fd)  # type: ignore[attr-defined]
+                json_file = JsonFile(json_handle,
+                                     JsonFileType.WINDOWS_HANDLE)
+            else:
+                json_file = JsonFile(json_fd, JsonFileType.UNIX_FD)
+        return (json_file, json_tmpfile)
+
+    def create_worker_runtests(self, test_name: TestName, json_file: JsonFile) -> WorkerRunTests:
+        tests = (test_name,)
+        if self.runtests.rerun:
+            match_tests = self.runtests.get_match_tests(test_name)
+        else:
+            match_tests = None
+
+        kwargs: dict[str, Any] = {}
+        if match_tests:
+            kwargs['match_tests'] = [(test, True) for test in match_tests]
+        if self.runtests.output_on_failure:
+            kwargs['verbose'] = True
+            kwargs['output_on_failure'] = False
+        return self.runtests.create_worker_runtests(
+            tests=tests,
+            json_file=json_file,
+            **kwargs)
+
+    def run_tmp_files(self, worker_runtests: WorkerRunTests,
+                      stdout_fd: int) -> tuple[int | None, list[StrPath]]:
+        # gh-93353: Check for leaked temporary files in the parent process,
+        # since the deletion of temporary files can happen late during
+        # Python finalization: too late for libregrtest.
+        if not support.is_wasi:
+            # Don't check for leaked temporary files and directories if Python is
+            # run on WASI. WASI doesn't pass environment variables like TMPDIR to
+            # worker processes.
+            tmp_dir = tempfile.mkdtemp(prefix="test_python_")
+            tmp_dir = os.path.abspath(tmp_dir)
+            try:
+                retcode = self._run_process(worker_runtests,
+                                            stdout_fd, tmp_dir)
+            finally:
+                tmp_files = os.listdir(tmp_dir)
+                os_helper.rmtree(tmp_dir)
+        else:
+            retcode = self._run_process(worker_runtests, stdout_fd)
+            tmp_files = []
+
+        return (retcode, tmp_files)
+
+    def read_stdout(self, stdout_file: TextIO) -> str:
+        stdout_file.seek(0)
+        try:
+            return stdout_file.read().strip()
+        except Exception as exc:
+            # gh-101634: Catch UnicodeDecodeError if stdout cannot be
+            # decoded from encoding
+            raise WorkerError(self.test_name,
+                              f"Cannot read process stdout: {exc}",
+                              stdout=None,
+                              state=State.WORKER_BUG)
+
+    def read_json(self, json_file: JsonFile, json_tmpfile: TextIO | None,
+                  stdout: str) -> tuple[TestResult, str]:
+        try:
+            if json_tmpfile is not None:
+                json_tmpfile.seek(0)
+                worker_json = json_tmpfile.read()
+            elif json_file.file_type == JsonFileType.STDOUT:
+                stdout, _, worker_json = stdout.rpartition("\n")
+                stdout = stdout.rstrip()
+            else:
+                with json_file.open(encoding='utf8') as json_fp:
+                    worker_json = json_fp.read()
+        except Exception as exc:
+            # gh-101634: Catch UnicodeDecodeError if stdout cannot be
+            # decoded from encoding
+            err_msg = f"Failed to read worker process JSON: {exc}"
+            raise WorkerError(self.test_name, err_msg, stdout,
+                              state=State.WORKER_BUG)
+
+        if not worker_json:
+            raise WorkerError(self.test_name, "empty JSON", stdout,
+                              state=State.WORKER_BUG)
+
+        try:
+            result = TestResult.from_json(worker_json)
+        except Exception as exc:
+            # gh-101634: Catch UnicodeDecodeError if stdout cannot be
+            # decoded from encoding
+            err_msg = f"Failed to parse worker process JSON: {exc}"
+            raise WorkerError(self.test_name, err_msg, stdout,
+                              state=State.WORKER_BUG)
+
+        return (result, stdout)
+
+    def _runtest(self, test_name: TestName) -> MultiprocessResult:
+        with contextlib.ExitStack() as stack:
+            stdout_file = self.create_stdout(stack)
+            json_file, json_tmpfile = self.create_json_file(stack)
+            worker_runtests = self.create_worker_runtests(test_name, json_file)
+
+            retcode: str | int | None
+            retcode, tmp_files = self.run_tmp_files(worker_runtests,
+                                                    stdout_file.fileno())
+
+            stdout = self.read_stdout(stdout_file)
+
+            if retcode is None:
+                raise WorkerError(self.test_name, stdout=stdout,
+                                  err_msg=None,
+                                  state=State.TIMEOUT)
+            if retcode != 0:
+                name = get_signal_name(retcode)
+                if name:
+                    retcode = f"{retcode} ({name})"
+                raise WorkerError(self.test_name, f"Exit code {retcode}", stdout,
+                                  state=State.WORKER_FAILED)
+
+            result, stdout = self.read_json(json_file, json_tmpfile, stdout)
+
+        if tmp_files:
+            msg = (f'\n\n'
+                   f'Warning -- {test_name} leaked temporary files '
+                   f'({len(tmp_files)}): {", ".join(sorted(tmp_files))}')
+            stdout += msg
+            result.set_env_changed()
+
+        return MultiprocessResult(result, stdout)
+
+    def run(self) -> None:
+        fail_fast = self.runtests.fail_fast
+        fail_env_changed = self.runtests.fail_env_changed
+        while not self._stopped:
+            try:
+                try:
+                    test_name = next(self.pending)
+                except StopIteration:
+                    break
+
+                self.start_time = time.monotonic()
+                self.test_name = test_name
+                try:
+                    mp_result = self._runtest(test_name)
+                except WorkerError as exc:
+                    mp_result = exc.mp_result
+                finally:
+                    self.test_name = None
+                mp_result.result.duration = time.monotonic() - self.start_time
+                self.output.put((False, mp_result))
+
+                if mp_result.result.must_stop(fail_fast, fail_env_changed):
+                    break
+            except ExitThread:
+                break
+            except BaseException:
+                self.output.put((True, traceback.format_exc()))
+                break
+
+    def _wait_completed(self) -> None:
+        popen = self._popen
+
+        try:
+            popen.wait(WAIT_COMPLETED_TIMEOUT)
+        except (subprocess.TimeoutExpired, OSError) as exc:
+            print_warning(f"Failed to wait for {self} completion "
+                          f"(timeout={format_duration(WAIT_COMPLETED_TIMEOUT)}): "
+                          f"{exc!r}")
+
+    def wait_stopped(self, start_time: float) -> None:
+        # bpo-38207: RunWorkers.stop_workers() called self.stop()
+        # which killed the process. Sometimes, killing the process from the
+        # main thread does not interrupt popen.communicate() in
+        # WorkerThread thread. This loop with a timeout is a workaround
+        # for that.
+        #
+        # Moreover, if this method fails to join the thread, it is likely
+        # that Python will hang at exit while calling threading._shutdown()
+        # which tries again to join the blocked thread. Regrtest.main()
+        # uses EXIT_TIMEOUT to workaround this second bug.
+        while True:
+            # Write a message every second
+            self.join(1.0)
+            if not self.is_alive():
+                break
+            dt = time.monotonic() - start_time
+            self.log(f"Waiting for {self} thread for {format_duration(dt)}")
+            if dt > WAIT_KILLED_TIMEOUT:
+                print_warning(f"Failed to join {self} in {format_duration(dt)}")
+                break
+
+
+def get_running(workers: list[WorkerThread]) -> str | None:
+    running: list[str] = []
+    for worker in workers:
+        test_name = worker.test_name
+        if not test_name:
+            continue
+        dt = time.monotonic() - worker.start_time
+        if dt >= PROGRESS_MIN_TIME:
+            text = f'{test_name} ({format_duration(dt)})'
+            running.append(text)
+    if not running:
+        return None
+    return f"running ({len(running)}): {', '.join(running)}"
+
+
+class RunWorkers:
+    def __init__(self, num_workers: int, runtests: RunTests,
+                 logger: Logger, results: TestResults) -> None:
+        self.num_workers = num_workers
+        self.runtests = runtests
+        self.log = logger.log
+        self.display_progress = logger.display_progress
+        self.results: TestResults = results
+
+        self.output: queue.Queue[QueueOutput] = queue.Queue()
+        tests_iter = runtests.iter_tests()
+        self.pending = MultiprocessIterator(tests_iter)
+        self.timeout = runtests.timeout
+        if self.timeout is not None:
+            # Rely on faulthandler to kill a worker process. This timouet is
+            # when faulthandler fails to kill a worker process. Give a maximum
+            # of 5 minutes to faulthandler to kill the worker.
+            self.worker_timeout: float | None = min(self.timeout * 1.5, self.timeout + 5 * 60)
+        else:
+            self.worker_timeout = None
+        self.workers: list[WorkerThread] | None = None
+
+        jobs = self.runtests.get_jobs()
+        if jobs is not None:
+            # Don't spawn more threads than the number of jobs:
+            # these worker threads would never get anything to do.
+            self.num_workers = min(self.num_workers, jobs)
+
+    def start_workers(self) -> None:
+        self.workers = [WorkerThread(index, self)
+                        for index in range(1, self.num_workers + 1)]
+        jobs = self.runtests.get_jobs()
+        if jobs is not None:
+            tests = count(jobs, 'test')
+        else:
+            tests = 'tests'
+        nworkers = len(self.workers)
+        processes = plural(nworkers, "process", "processes")
+        msg = (f"Run {tests} in parallel using "
+               f"{nworkers} worker {processes}")
+        if self.timeout:
+            msg += (" (timeout: %s, worker timeout: %s)"
+                    % (format_duration(self.timeout),
+                       format_duration(self.worker_timeout)))
+        self.log(msg)
+        for worker in self.workers:
+            worker.start()
+
+    def stop_workers(self) -> None:
+        start_time = time.monotonic()
+        for worker in self.workers:
+            worker.stop()
+        for worker in self.workers:
+            worker.wait_stopped(start_time)
+
+    def _get_result(self) -> QueueOutput | None:
+        pgo = self.runtests.pgo
+        use_faulthandler = (self.timeout is not None)
+
+        # bpo-46205: check the status of workers every iteration to avoid
+        # waiting forever on an empty queue.
+        while any(worker.is_alive() for worker in self.workers):
+            if use_faulthandler:
+                faulthandler.dump_traceback_later(MAIN_PROCESS_TIMEOUT,
+                                                  exit=True)
+
+            # wait for a thread
+            try:
+                return self.output.get(timeout=PROGRESS_UPDATE)
+            except queue.Empty:
+                pass
+
+            if not pgo:
+                # display progress
+                running = get_running(self.workers)
+                if running:
+                    self.log(running)
+
+        # all worker threads are done: consume pending results
+        try:
+            return self.output.get(timeout=0)
+        except queue.Empty:
+            return None
+
+    def display_result(self, mp_result: MultiprocessResult) -> None:
+        result = mp_result.result
+        pgo = self.runtests.pgo
+
+        text = str(result)
+        if mp_result.err_msg:
+            # WORKER_BUG
+            text += ' (%s)' % mp_result.err_msg
+        elif (result.duration >= PROGRESS_MIN_TIME and not pgo):
+            text += ' (%s)' % format_duration(result.duration)
+        if not pgo:
+            running = get_running(self.workers)
+            if running:
+                text += f' -- {running}'
+        self.display_progress(self.test_index, text)
+
+    def _process_result(self, item: QueueOutput) -> TestResult:
+        """Returns True if test runner must stop."""
+        if item[0]:
+            # Thread got an exception
+            format_exc = item[1]
+            print_warning(f"regrtest worker thread failed: {format_exc}")
+            result = TestResult("<regrtest worker>", state=State.WORKER_BUG)
+            self.results.accumulate_result(result, self.runtests)
+            return result
+
+        self.test_index += 1
+        mp_result = item[1]
+        result = mp_result.result
+        self.results.accumulate_result(result, self.runtests)
+        self.display_result(mp_result)
+
+        # Display worker stdout
+        if not self.runtests.output_on_failure:
+            show_stdout = True
+        else:
+            # --verbose3 ignores stdout on success
+            show_stdout = (result.state != State.PASSED)
+        if show_stdout:
+            stdout = mp_result.worker_stdout
+            if stdout:
+                print(stdout, flush=True)
+
+        return result
+
+    def run(self) -> None:
+        fail_fast = self.runtests.fail_fast
+        fail_env_changed = self.runtests.fail_env_changed
+
+        self.start_workers()
+
+        self.test_index = 0
+        try:
+            while True:
+                item = self._get_result()
+                if item is None:
+                    break
+
+                result = self._process_result(item)
+                if result.must_stop(fail_fast, fail_env_changed):
+                    break
+        except KeyboardInterrupt:
+            print()
+            self.results.interrupted = True
+        finally:
+            if self.timeout is not None:
+                faulthandler.cancel_dump_traceback_later()
+
+            # Always ensure that all worker processes are no longer
+            # worker when we exit this function
+            self.pending.stop()
+            self.stop_workers()
diff --git a/Lib/test/libregrtest/runtest.py b/Lib/test/libregrtest/runtest.py
deleted file mode 100644
index 61595277ed6d5a..00000000000000
--- a/Lib/test/libregrtest/runtest.py
+++ /dev/null
@@ -1,444 +0,0 @@
-import faulthandler
-import functools
-import gc
-import importlib
-import io
-import os
-import sys
-import time
-import traceback
-import unittest
-
-from test import support
-from test.support import os_helper
-from test.support import threading_helper
-from test.libregrtest.cmdline import Namespace
-from test.libregrtest.save_env import saved_test_environment
-from test.libregrtest.utils import clear_caches, format_duration, print_warning
-
-
-class TestResult:
-    def __init__(
-        self,
-        name: str,
-        duration_sec: float = 0.0,
-        xml_data: list[str] | None = None,
-    ) -> None:
-        self.name = name
-        self.duration_sec = duration_sec
-        self.xml_data = xml_data
-
-    def __str__(self) -> str:
-        return f"{self.name} finished"
-
-
-class Passed(TestResult):
-    def __str__(self) -> str:
-        return f"{self.name} passed"
-
-
-class Failed(TestResult):
-    def __init__(
-        self,
-        name: str,
-        duration_sec: float = 0.0,
-        xml_data: list[str] | None = None,
-        errors: list[tuple[str, str]] | None = None,
-        failures: list[tuple[str, str]] | None = None,
-    ) -> None:
-        super().__init__(name, duration_sec=duration_sec, xml_data=xml_data)
-        self.errors = errors
-        self.failures = failures
-
-    def __str__(self) -> str:
-        if self.errors and self.failures:
-            le = len(self.errors)
-            lf = len(self.failures)
-            error_s = "error" + ("s" if le > 1 else "")
-            failure_s = "failure" + ("s" if lf > 1 else "")
-            return f"{self.name} failed ({le} {error_s}, {lf} {failure_s})"
-
-        if self.errors:
-            le = len(self.errors)
-            error_s = "error" + ("s" if le > 1 else "")
-            return f"{self.name} failed ({le} {error_s})"
-
-        if self.failures:
-            lf = len(self.failures)
-            failure_s = "failure" + ("s" if lf > 1 else "")
-            return f"{self.name} failed ({lf} {failure_s})"
-
-        return f"{self.name} failed"
-
-
-class UncaughtException(Failed):
-    def __str__(self) -> str:
-        return f"{self.name} failed (uncaught exception)"
-
-
-class EnvChanged(Failed):
-    def __str__(self) -> str:
-        return f"{self.name} failed (env changed)"
-
-    # Convert Passed to EnvChanged
-    @staticmethod
-    def from_passed(other):
-        return EnvChanged(other.name, other.duration_sec, other.xml_data)
-
-
-class RefLeak(Failed):
-    def __str__(self) -> str:
-        return f"{self.name} failed (reference leak)"
-
-
-class Skipped(TestResult):
-    def __str__(self) -> str:
-        return f"{self.name} skipped"
-
-
-class ResourceDenied(Skipped):
-    def __str__(self) -> str:
-        return f"{self.name} skipped (resource denied)"
-
-
-class Interrupted(TestResult):
-    def __str__(self) -> str:
-        return f"{self.name} interrupted"
-
-
-class ChildError(Failed):
-    def __str__(self) -> str:
-        return f"{self.name} crashed"
-
-
-class DidNotRun(TestResult):
-    def __str__(self) -> str:
-        return f"{self.name} ran no tests"
-
-
-class Timeout(Failed):
-    def __str__(self) -> str:
-        return f"{self.name} timed out ({format_duration(self.duration_sec)})"
-
-
-# Minimum duration of a test to display its duration or to mention that
-# the test is running in background
-PROGRESS_MIN_TIME = 30.0   # seconds
-
-# small set of tests to determine if we have a basically functioning interpreter
-# (i.e. if any of these fail, then anything else is likely to follow)
-STDTESTS = [
-    'test_grammar',
-    'test_opcodes',
-    'test_dict',
-    'test_builtin',
-    'test_exceptions',
-    'test_types',
-    'test_unittest',
-    'test_doctest',
-    'test_doctest2',
-    'test_support'
-]
-
-# set of tests that we don't want to be executed when using regrtest
-NOTTESTS = set()
-
-#If these test directories are encountered recurse into them and treat each
-# test_ .py or dir as a separate test module. This can increase parallelism.
-# Beware this can't generally be done for any directory with sub-tests as the
-# __init__.py may do things which alter what tests are to be run.
-
-SPLITTESTDIRS = {
-    "test_asyncio",
-}
-
-# Storage of uncollectable objects
-FOUND_GARBAGE = []
-
-
-def is_failed(result: TestResult, ns: Namespace) -> bool:
-    if isinstance(result, EnvChanged):
-        return ns.fail_env_changed
-    return isinstance(result, Failed)
-
-
-def findtestdir(path=None):
-    return path or os.path.dirname(os.path.dirname(__file__)) or os.curdir
-
-
-def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS, *, split_test_dirs=SPLITTESTDIRS, base_mod=""):
-    """Return a list of all applicable test modules."""
-    testdir = findtestdir(testdir)
-    names = os.listdir(testdir)
-    tests = []
-    others = set(stdtests) | nottests
-    for name in names:
-        mod, ext = os.path.splitext(name)
-        if mod[:5] == "test_" and mod not in others:
-            if mod in split_test_dirs:
-                subdir = os.path.join(testdir, mod)
-                mod = f"{base_mod or 'test'}.{mod}"
-                tests.extend(findtests(subdir, [], nottests, split_test_dirs=split_test_dirs, base_mod=mod))
-            elif ext in (".py", ""):
-                tests.append(f"{base_mod}.{mod}" if base_mod else mod)
-    return stdtests + sorted(tests)
-
-
-def get_abs_module(ns: Namespace, test_name: str) -> str:
-    if test_name.startswith('test.') or ns.testdir:
-        return test_name
-    else:
-        # Import it from the test package
-        return 'test.' + test_name
-
-
-def _runtest(ns: Namespace, test_name: str) -> TestResult:
-    # Handle faulthandler timeout, capture stdout+stderr, XML serialization
-    # and measure time.
-
-    output_on_failure = ns.verbose3
-
-    use_timeout = (
-        ns.timeout is not None and threading_helper.can_start_thread
-    )
-    if use_timeout:
-        faulthandler.dump_traceback_later(ns.timeout, exit=True)
-
-    start_time = time.perf_counter()
-    try:
-        support.set_match_tests(ns.match_tests, ns.ignore_tests)
-        support.junit_xml_list = xml_list = [] if ns.xmlpath else None
-        if ns.failfast:
-            support.failfast = True
-
-        if output_on_failure:
-            support.verbose = True
-
-            stream = io.StringIO()
-            orig_stdout = sys.stdout
-            orig_stderr = sys.stderr
-            print_warning = support.print_warning
-            orig_print_warnings_stderr = print_warning.orig_stderr
-
-            output = None
-            try:
-                sys.stdout = stream
-                sys.stderr = stream
-                # print_warning() writes into the temporary stream to preserve
-                # messages order. If support.environment_altered becomes true,
-                # warnings will be written to sys.stderr below.
-                print_warning.orig_stderr = stream
-
-                result = _runtest_inner(ns, test_name,
-                                        display_failure=False)
-                if not isinstance(result, Passed):
-                    output = stream.getvalue()
-            finally:
-                sys.stdout = orig_stdout
-                sys.stderr = orig_stderr
-                print_warning.orig_stderr = orig_print_warnings_stderr
-
-            if output is not None:
-                sys.stderr.write(output)
-                sys.stderr.flush()
-        else:
-            # Tell tests to be moderately quiet
-            support.verbose = ns.verbose
-
-            result = _runtest_inner(ns, test_name,
-                                    display_failure=not ns.verbose)
-
-        if xml_list:
-            import xml.etree.ElementTree as ET
-            result.xml_data = [
-                ET.tostring(x).decode('us-ascii')
-                for x in xml_list
-            ]
-
-        result.duration_sec = time.perf_counter() - start_time
-        return result
-    finally:
-        if use_timeout:
-            faulthandler.cancel_dump_traceback_later()
-        support.junit_xml_list = None
-
-
-def runtest(ns: Namespace, test_name: str) -> TestResult:
-    """Run a single test.
-
-    ns -- regrtest namespace of options
-    test_name -- the name of the test
-
-    Returns a TestResult sub-class depending on the kind of result received.
-
-    If ns.xmlpath is not None, xml_data is a list containing each
-    generated testsuite element.
-    """
-    try:
-        return _runtest(ns, test_name)
-    except:
-        if not ns.pgo:
-            msg = traceback.format_exc()
-            print(f"test {test_name} crashed -- {msg}",
-                  file=sys.stderr, flush=True)
-        return Failed(test_name)
-
-
-def _test_module(the_module):
-    loader = unittest.TestLoader()
-    tests = loader.loadTestsFromModule(the_module)
-    for error in loader.errors:
-        print(error, file=sys.stderr)
-    if loader.errors:
-        raise Exception("errors while loading tests")
-    support.run_unittest(tests)
-
-
-def save_env(ns: Namespace, test_name: str):
-    return saved_test_environment(test_name, ns.verbose, ns.quiet, pgo=ns.pgo)
-
-
-def _runtest_inner2(ns: Namespace, test_name: str) -> bool:
-    # Load the test function, run the test function, handle huntrleaks
-    # to detect leaks.
-
-    abstest = get_abs_module(ns, test_name)
-
-    # remove the module from sys.module to reload it if it was already imported
-    try:
-        del sys.modules[abstest]
-    except KeyError:
-        pass
-
-    the_module = importlib.import_module(abstest)
-
-    if ns.huntrleaks:
-        from test.libregrtest.refleak import dash_R
-
-    # If the test has a test_main, that will run the appropriate
-    # tests.  If not, use normal unittest test loading.
-    test_runner = getattr(the_module, "test_main", None)
-    if test_runner is None:
-        test_runner = functools.partial(_test_module, the_module)
-
-    try:
-        with save_env(ns, test_name):
-            if ns.huntrleaks:
-                # Return True if the test leaked references
-                refleak = dash_R(ns, test_name, test_runner)
-            else:
-                test_runner()
-                refleak = False
-    finally:
-        # First kill any dangling references to open files etc.
-        # This can also issue some ResourceWarnings which would otherwise get
-        # triggered during the following test run, and possibly produce
-        # failures.
-        support.gc_collect()
-
-        cleanup_test_droppings(test_name, ns.verbose)
-
-    if gc.garbage:
-        support.environment_altered = True
-        print_warning(f"{test_name} created {len(gc.garbage)} "
-                      f"uncollectable object(s).")
-
-        # move the uncollectable objects somewhere,
-        # so we don't see them again
-        FOUND_GARBAGE.extend(gc.garbage)
-        gc.garbage.clear()
-
-    support.reap_children()
-
-    return refleak
-
-
-def _runtest_inner(
-    ns: Namespace, test_name: str, display_failure: bool = True
-) -> TestResult:
-    # Detect environment changes, handle exceptions.
-
-    # Reset the environment_altered flag to detect if a test altered
-    # the environment
-    support.environment_altered = False
-
-    if ns.pgo:
-        display_failure = False
-
-    try:
-        clear_caches()
-        support.gc_collect()
-
-        with save_env(ns, test_name):
-            refleak = _runtest_inner2(ns, test_name)
-    except support.ResourceDenied as msg:
-        if not ns.quiet and not ns.pgo:
-            print(f"{test_name} skipped -- {msg}", flush=True)
-        return ResourceDenied(test_name)
-    except unittest.SkipTest as msg:
-        if not ns.quiet and not ns.pgo:
-            print(f"{test_name} skipped -- {msg}", flush=True)
-        return Skipped(test_name)
-    except support.TestFailedWithDetails as exc:
-        msg = f"test {test_name} failed"
-        if display_failure:
-            msg = f"{msg} -- {exc}"
-        print(msg, file=sys.stderr, flush=True)
-        return Failed(test_name, errors=exc.errors, failures=exc.failures)
-    except support.TestFailed as exc:
-        msg = f"test {test_name} failed"
-        if display_failure:
-            msg = f"{msg} -- {exc}"
-        print(msg, file=sys.stderr, flush=True)
-        return Failed(test_name)
-    except support.TestDidNotRun:
-        return DidNotRun(test_name)
-    except KeyboardInterrupt:
-        print()
-        return Interrupted(test_name)
-    except:
-        if not ns.pgo:
-            msg = traceback.format_exc()
-            print(f"test {test_name} crashed -- {msg}",
-                  file=sys.stderr, flush=True)
-        return UncaughtException(test_name)
-
-    if refleak:
-        return RefLeak(test_name)
-    if support.environment_altered:
-        return EnvChanged(test_name)
-    return Passed(test_name)
-
-
-def cleanup_test_droppings(test_name: str, verbose: int) -> None:
-    # Try to clean up junk commonly left behind.  While tests shouldn't leave
-    # any files or directories behind, when a test fails that can be tedious
-    # for it to arrange.  The consequences can be especially nasty on Windows,
-    # since if a test leaves a file open, it cannot be deleted by name (while
-    # there's nothing we can do about that here either, we can display the
-    # name of the offending test, which is a real help).
-    for name in (os_helper.TESTFN,):
-        if not os.path.exists(name):
-            continue
-
-        if os.path.isdir(name):
-            import shutil
-            kind, nuker = "directory", shutil.rmtree
-        elif os.path.isfile(name):
-            kind, nuker = "file", os.unlink
-        else:
-            raise RuntimeError(f"os.path says {name!r} exists but is neither "
-                               f"directory nor file")
-
-        if verbose:
-            print_warning(f"{test_name} left behind {kind} {name!r}")
-            support.environment_altered = True
-
-        try:
-            import stat
-            # fix possible permissions problems that might prevent cleanup
-            os.chmod(name, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO)
-            nuker(name)
-        except Exception as exc:
-            print_warning(f"{test_name} left behind {kind} {name!r} "
-                          f"and it couldn't be removed: {exc}")
diff --git a/Lib/test/libregrtest/runtest_mp.py b/Lib/test/libregrtest/runtest_mp.py
deleted file mode 100644
index a12fcb46e0fd0b..00000000000000
--- a/Lib/test/libregrtest/runtest_mp.py
+++ /dev/null
@@ -1,562 +0,0 @@
-import faulthandler
-import json
-import os.path
-import queue
-import signal
-import subprocess
-import sys
-import tempfile
-import threading
-import time
-import traceback
-from typing import NamedTuple, NoReturn, Literal, Any, TextIO
-
-from test import support
-from test.support import os_helper
-
-from test.libregrtest.cmdline import Namespace
-from test.libregrtest.main import Regrtest
-from test.libregrtest.runtest import (
-    runtest, is_failed, TestResult, Interrupted, Timeout, ChildError,
-    PROGRESS_MIN_TIME, Passed, EnvChanged)
-from test.libregrtest.setup import setup_tests
-from test.libregrtest.utils import format_duration, print_warning
-
-if sys.platform == 'win32':
-    import locale
-
-
-# Display the running tests if nothing happened last N seconds
-PROGRESS_UPDATE = 30.0   # seconds
-assert PROGRESS_UPDATE >= PROGRESS_MIN_TIME
-
-# Kill the main process after 5 minutes. It is supposed to write an update
-# every PROGRESS_UPDATE seconds. Tolerate 5 minutes for Python slowest
-# buildbot workers.
-MAIN_PROCESS_TIMEOUT = 5 * 60.0
-assert MAIN_PROCESS_TIMEOUT >= PROGRESS_UPDATE
-
-# Time to wait until a worker completes: should be immediate
-JOIN_TIMEOUT = 30.0   # seconds
-
-USE_PROCESS_GROUP = (hasattr(os, "setsid") and hasattr(os, "killpg"))
-
-
-def must_stop(result: TestResult, ns: Namespace) -> bool:
-    if isinstance(result, Interrupted):
-        return True
-    if ns.failfast and is_failed(result, ns):
-        return True
-    return False
-
-
-def parse_worker_args(worker_args) -> tuple[Namespace, str]:
-    ns_dict, test_name = json.loads(worker_args)
-    ns = Namespace(**ns_dict)
-    return (ns, test_name)
-
-
-def run_test_in_subprocess(testname: str, ns: Namespace, tmp_dir: str, stdout_fh: TextIO) -> subprocess.Popen:
-    ns_dict = vars(ns)
-    worker_args = (ns_dict, testname)
-    worker_args = json.dumps(worker_args)
-    if ns.python is not None:
-        executable = ns.python
-    else:
-        executable = [sys.executable]
-    cmd = [*executable, *support.args_from_interpreter_flags(),
-           '-u',    # Unbuffered stdout and stderr
-           '-m', 'test.regrtest',
-           '--worker-args', worker_args]
-
-    env = dict(os.environ)
-    if tmp_dir is not None:
-        env['TMPDIR'] = tmp_dir
-        env['TEMP'] = tmp_dir
-        env['TMP'] = tmp_dir
-
-    # Running the child from the same working directory as regrtest's original
-    # invocation ensures that TEMPDIR for the child is the same when
-    # sysconfig.is_python_build() is true. See issue 15300.
-    kw = dict(
-        env=env,
-        stdout=stdout_fh,
-        # bpo-45410: Write stderr into stdout to keep messages order
-        stderr=stdout_fh,
-        text=True,
-        close_fds=(os.name != 'nt'),
-        cwd=os_helper.SAVEDCWD,
-    )
-    if USE_PROCESS_GROUP:
-        kw['start_new_session'] = True
-    return subprocess.Popen(cmd, **kw)
-
-
-def run_tests_worker(ns: Namespace, test_name: str) -> NoReturn:
-    setup_tests(ns)
-
-    result = runtest(ns, test_name)
-
-    print()   # Force a newline (just in case)
-
-    # Serialize TestResult as dict in JSON
-    print(json.dumps(result, cls=EncodeTestResult), flush=True)
-    sys.exit(0)
-
-
-# We do not use a generator so multiple threads can call next().
-class MultiprocessIterator:
-
-    """A thread-safe iterator over tests for multiprocess mode."""
-
-    def __init__(self, tests_iter):
-        self.lock = threading.Lock()
-        self.tests_iter = tests_iter
-
-    def __iter__(self):
-        return self
-
-    def __next__(self):
-        with self.lock:
-            if self.tests_iter is None:
-                raise StopIteration
-            return next(self.tests_iter)
-
-    def stop(self):
-        with self.lock:
-            self.tests_iter = None
-
-
-class MultiprocessResult(NamedTuple):
-    result: TestResult
-    # bpo-45410: stderr is written into stdout to keep messages order
-    stdout: str
-    error_msg: str
-
-
-ExcStr = str
-QueueOutput = tuple[Literal[False], MultiprocessResult] | tuple[Literal[True], ExcStr]
-
-
-class ExitThread(Exception):
-    pass
-
-
-class TestWorkerProcess(threading.Thread):
-    def __init__(self, worker_id: int, runner: "MultiprocessTestRunner") -> None:
-        super().__init__()
-        self.worker_id = worker_id
-        self.pending = runner.pending
-        self.output = runner.output
-        self.ns = runner.ns
-        self.timeout = runner.worker_timeout
-        self.regrtest = runner.regrtest
-        self.current_test_name = None
-        self.start_time = None
-        self._popen = None
-        self._killed = False
-        self._stopped = False
-
-    def __repr__(self) -> str:
-        info = [f'TestWorkerProcess #{self.worker_id}']
-        if self.is_alive():
-            info.append("running")
-        else:
-            info.append('stopped')
-        test = self.current_test_name
-        if test:
-            info.append(f'test={test}')
-        popen = self._popen
-        if popen is not None:
-            dt = time.monotonic() - self.start_time
-            info.extend((f'pid={self._popen.pid}',
-                         f'time={format_duration(dt)}'))
-        return '<%s>' % ' '.join(info)
-
-    def _kill(self) -> None:
-        popen = self._popen
-        if popen is None:
-            return
-
-        if self._killed:
-            return
-        self._killed = True
-
-        if USE_PROCESS_GROUP:
-            what = f"{self} process group"
-        else:
-            what = f"{self}"
-
-        print(f"Kill {what}", file=sys.stderr, flush=True)
-        try:
-            if USE_PROCESS_GROUP:
-                os.killpg(popen.pid, signal.SIGKILL)
-            else:
-                popen.kill()
-        except ProcessLookupError:
-            # popen.kill(): the process completed, the TestWorkerProcess thread
-            # read its exit status, but Popen.send_signal() read the returncode
-            # just before Popen.wait() set returncode.
-            pass
-        except OSError as exc:
-            print_warning(f"Failed to kill {what}: {exc!r}")
-
-    def stop(self) -> None:
-        # Method called from a different thread to stop this thread
-        self._stopped = True
-        self._kill()
-
-    def mp_result_error(
-        self,
-        test_result: TestResult,
-        stdout: str = '',
-        err_msg=None
-    ) -> MultiprocessResult:
-        test_result.duration_sec = time.monotonic() - self.start_time
-        return MultiprocessResult(test_result, stdout, err_msg)
-
-    def _run_process(self, test_name: str, tmp_dir: str, stdout_fh: TextIO) -> int:
-        self.start_time = time.monotonic()
-
-        self.current_test_name = test_name
-        try:
-            popen = run_test_in_subprocess(test_name, self.ns, tmp_dir, stdout_fh)
-
-            self._killed = False
-            self._popen = popen
-        except:
-            self.current_test_name = None
-            raise
-
-        try:
-            if self._stopped:
-                # If kill() has been called before self._popen is set,
-                # self._popen is still running. Call again kill()
-                # to ensure that the process is killed.
-                self._kill()
-                raise ExitThread
-
-            try:
-                # gh-94026: stdout+stderr are written to tempfile
-                retcode = popen.wait(timeout=self.timeout)
-                assert retcode is not None
-                return retcode
-            except subprocess.TimeoutExpired:
-                if self._stopped:
-                    # kill() has been called: communicate() fails on reading
-                    # closed stdout
-                    raise ExitThread
-
-                # On timeout, kill the process
-                self._kill()
-
-                # None means TIMEOUT for the caller
-                retcode = None
-                # bpo-38207: Don't attempt to call communicate() again: on it
-                # can hang until all child processes using stdout
-                # pipes completes.
-            except OSError:
-                if self._stopped:
-                    # kill() has been called: communicate() fails
-                    # on reading closed stdout
-                    raise ExitThread
-                raise
-        except:
-            self._kill()
-            raise
-        finally:
-            self._wait_completed()
-            self._popen = None
-            self.current_test_name = None
-
-    def _runtest(self, test_name: str) -> MultiprocessResult:
-        if sys.platform == 'win32':
-            # gh-95027: When stdout is not a TTY, Python uses the ANSI code
-            # page for the sys.stdout encoding. If the main process runs in a
-            # terminal, sys.stdout uses WindowsConsoleIO with UTF-8 encoding.
-            encoding = locale.getencoding()
-        else:
-            encoding = sys.stdout.encoding
-        # gh-94026: Write stdout+stderr to a tempfile as workaround for
-        # non-blocking pipes on Emscripten with NodeJS.
-        with tempfile.TemporaryFile('w+', encoding=encoding) as stdout_fh:
-            # gh-93353: Check for leaked temporary files in the parent process,
-            # since the deletion of temporary files can happen late during
-            # Python finalization: too late for libregrtest.
-            if not support.is_wasi:
-                # Don't check for leaked temporary files and directories if Python is
-                # run on WASI. WASI don't pass environment variables like TMPDIR to
-                # worker processes.
-                tmp_dir = tempfile.mkdtemp(prefix="test_python_")
-                tmp_dir = os.path.abspath(tmp_dir)
-                try:
-                    retcode = self._run_process(test_name, tmp_dir, stdout_fh)
-                finally:
-                    tmp_files = os.listdir(tmp_dir)
-                    os_helper.rmtree(tmp_dir)
-            else:
-                retcode = self._run_process(test_name, None, stdout_fh)
-                tmp_files = ()
-            stdout_fh.seek(0)
-            stdout = stdout_fh.read().strip()
-
-        if retcode is None:
-            return self.mp_result_error(Timeout(test_name), stdout)
-
-        err_msg = None
-        if retcode != 0:
-            err_msg = "Exit code %s" % retcode
-        else:
-            stdout, _, result = stdout.rpartition("\n")
-            stdout = stdout.rstrip()
-            if not result:
-                err_msg = "Failed to parse worker stdout"
-            else:
-                try:
-                    # deserialize run_tests_worker() output
-                    result = json.loads(result, object_hook=decode_test_result)
-                except Exception as exc:
-                    err_msg = "Failed to parse worker JSON: %s" % exc
-
-        if err_msg is not None:
-            return self.mp_result_error(ChildError(test_name), stdout, err_msg)
-
-        if tmp_files:
-            msg = (f'\n\n'
-                   f'Warning -- {test_name} leaked temporary files '
-                   f'({len(tmp_files)}): {", ".join(sorted(tmp_files))}')
-            stdout += msg
-            if isinstance(result, Passed):
-                result = EnvChanged.from_passed(result)
-
-        return MultiprocessResult(result, stdout, err_msg)
-
-    def run(self) -> None:
-        while not self._stopped:
-            try:
-                try:
-                    test_name = next(self.pending)
-                except StopIteration:
-                    break
-
-                mp_result = self._runtest(test_name)
-                self.output.put((False, mp_result))
-
-                if must_stop(mp_result.result, self.ns):
-                    break
-            except ExitThread:
-                break
-            except BaseException:
-                self.output.put((True, traceback.format_exc()))
-                break
-
-    def _wait_completed(self) -> None:
-        popen = self._popen
-
-        try:
-            popen.wait(JOIN_TIMEOUT)
-        except (subprocess.TimeoutExpired, OSError) as exc:
-            print_warning(f"Failed to wait for {self} completion "
-                          f"(timeout={format_duration(JOIN_TIMEOUT)}): "
-                          f"{exc!r}")
-
-    def wait_stopped(self, start_time: float) -> None:
-        # bpo-38207: MultiprocessTestRunner.stop_workers() called self.stop()
-        # which killed the process. Sometimes, killing the process from the
-        # main thread does not interrupt popen.communicate() in
-        # TestWorkerProcess thread. This loop with a timeout is a workaround
-        # for that.
-        #
-        # Moreover, if this method fails to join the thread, it is likely
-        # that Python will hang at exit while calling threading._shutdown()
-        # which tries again to join the blocked thread. Regrtest.main()
-        # uses EXIT_TIMEOUT to workaround this second bug.
-        while True:
-            # Write a message every second
-            self.join(1.0)
-            if not self.is_alive():
-                break
-            dt = time.monotonic() - start_time
-            self.regrtest.log(f"Waiting for {self} thread "
-                              f"for {format_duration(dt)}")
-            if dt > JOIN_TIMEOUT:
-                print_warning(f"Failed to join {self} in {format_duration(dt)}")
-                break
-
-
-def get_running(workers: list[TestWorkerProcess]) -> list[TestWorkerProcess]:
-    running = []
-    for worker in workers:
-        current_test_name = worker.current_test_name
-        if not current_test_name:
-            continue
-        dt = time.monotonic() - worker.start_time
-        if dt >= PROGRESS_MIN_TIME:
-            text = '%s (%s)' % (current_test_name, format_duration(dt))
-            running.append(text)
-    return running
-
-
-class MultiprocessTestRunner:
-    def __init__(self, regrtest: Regrtest) -> None:
-        self.regrtest = regrtest
-        self.log = self.regrtest.log
-        self.ns = regrtest.ns
-        self.output: queue.Queue[QueueOutput] = queue.Queue()
-        self.pending = MultiprocessIterator(self.regrtest.tests)
-        if self.ns.timeout is not None:
-            # Rely on faulthandler to kill a worker process. This timouet is
-            # when faulthandler fails to kill a worker process. Give a maximum
-            # of 5 minutes to faulthandler to kill the worker.
-            self.worker_timeout = min(self.ns.timeout * 1.5,
-                                      self.ns.timeout + 5 * 60)
-        else:
-            self.worker_timeout = None
-        self.workers = None
-
-    def start_workers(self) -> None:
-        self.workers = [TestWorkerProcess(index, self)
-                        for index in range(1, self.ns.use_mp + 1)]
-        msg = f"Run tests in parallel using {len(self.workers)} child processes"
-        if self.ns.timeout:
-            msg += (" (timeout: %s, worker timeout: %s)"
-                    % (format_duration(self.ns.timeout),
-                       format_duration(self.worker_timeout)))
-        self.log(msg)
-        for worker in self.workers:
-            worker.start()
-
-    def stop_workers(self) -> None:
-        start_time = time.monotonic()
-        for worker in self.workers:
-            worker.stop()
-        for worker in self.workers:
-            worker.wait_stopped(start_time)
-
-    def _get_result(self) -> QueueOutput | None:
-        use_faulthandler = (self.ns.timeout is not None)
-        timeout = PROGRESS_UPDATE
-
-        # bpo-46205: check the status of workers every iteration to avoid
-        # waiting forever on an empty queue.
-        while any(worker.is_alive() for worker in self.workers):
-            if use_faulthandler:
-                faulthandler.dump_traceback_later(MAIN_PROCESS_TIMEOUT,
-                                                  exit=True)
-
-            # wait for a thread
-            try:
-                return self.output.get(timeout=timeout)
-            except queue.Empty:
-                pass
-
-            # display progress
-            running = get_running(self.workers)
-            if running and not self.ns.pgo:
-                self.log('running: %s' % ', '.join(running))
-
-        # all worker threads are done: consume pending results
-        try:
-            return self.output.get(timeout=0)
-        except queue.Empty:
-            return None
-
-    def display_result(self, mp_result: MultiprocessResult) -> None:
-        result = mp_result.result
-
-        text = str(result)
-        if mp_result.error_msg is not None:
-            # CHILD_ERROR
-            text += ' (%s)' % mp_result.error_msg
-        elif (result.duration_sec >= PROGRESS_MIN_TIME and not self.ns.pgo):
-            text += ' (%s)' % format_duration(result.duration_sec)
-        running = get_running(self.workers)
-        if running and not self.ns.pgo:
-            text += ' -- running: %s' % ', '.join(running)
-        self.regrtest.display_progress(self.test_index, text)
-
-    def _process_result(self, item: QueueOutput) -> bool:
-        """Returns True if test runner must stop."""
-        if item[0]:
-            # Thread got an exception
-            format_exc = item[1]
-            print_warning(f"regrtest worker thread failed: {format_exc}")
-            return True
-
-        self.test_index += 1
-        mp_result = item[1]
-        self.regrtest.accumulate_result(mp_result.result)
-        self.display_result(mp_result)
-
-        if mp_result.stdout:
-            print(mp_result.stdout, flush=True)
-
-        if must_stop(mp_result.result, self.ns):
-            return True
-
-        return False
-
-    def run_tests(self) -> None:
-        self.start_workers()
-
-        self.test_index = 0
-        try:
-            while True:
-                item = self._get_result()
-                if item is None:
-                    break
-
-                stop = self._process_result(item)
-                if stop:
-                    break
-        except KeyboardInterrupt:
-            print()
-            self.regrtest.interrupted = True
-        finally:
-            if self.ns.timeout is not None:
-                faulthandler.cancel_dump_traceback_later()
-
-            # Always ensure that all worker processes are no longer
-            # worker when we exit this function
-            self.pending.stop()
-            self.stop_workers()
-
-
-def run_tests_multiprocess(regrtest: Regrtest) -> None:
-    MultiprocessTestRunner(regrtest).run_tests()
-
-
-class EncodeTestResult(json.JSONEncoder):
-    """Encode a TestResult (sub)class object into a JSON dict."""
-
-    def default(self, o: Any) -> dict[str, Any]:
-        if isinstance(o, TestResult):
-            result = vars(o)
-            result["__test_result__"] = o.__class__.__name__
-            return result
-
-        return super().default(o)
-
-
-def decode_test_result(d: dict[str, Any]) -> TestResult | dict[str, Any]:
-    """Decode a TestResult (sub)class object from a JSON dict."""
-
-    if "__test_result__" not in d:
-        return d
-
-    cls_name = d.pop("__test_result__")
-    for cls in get_all_test_result_classes():
-        if cls.__name__ == cls_name:
-            return cls(**d)
-
-
-def get_all_test_result_classes() -> set[type[TestResult]]:
-    prev_count = 0
-    classes = {TestResult}
-    while len(classes) > prev_count:
-        prev_count = len(classes)
-        to_add = []
-        for cls in classes:
-            to_add.extend(cls.__subclasses__())
-        classes.update(to_add)
-    return classes
diff --git a/Lib/test/libregrtest/runtests.py b/Lib/test/libregrtest/runtests.py
new file mode 100644
index 00000000000000..edd72276320e41
--- /dev/null
+++ b/Lib/test/libregrtest/runtests.py
@@ -0,0 +1,172 @@
+import contextlib
+import dataclasses
+import json
+import os
+import subprocess
+from typing import Any
+
+from test import support
+
+from .utils import (
+    StrPath, StrJSON, TestTuple, TestFilter, FilterTuple, FilterDict)
+
+
+class JsonFileType:
+    UNIX_FD = "UNIX_FD"
+    WINDOWS_HANDLE = "WINDOWS_HANDLE"
+    STDOUT = "STDOUT"
+
+
+@dataclasses.dataclass(slots=True, frozen=True)
+class JsonFile:
+    # file type depends on file_type:
+    # - UNIX_FD: file descriptor (int)
+    # - WINDOWS_HANDLE: handle (int)
+    # - STDOUT: use process stdout (None)
+    file: int | None
+    file_type: str
+
+    def configure_subprocess(self, popen_kwargs: dict) -> None:
+        match self.file_type:
+            case JsonFileType.UNIX_FD:
+                # Unix file descriptor
+                popen_kwargs['pass_fds'] = [self.file]
+            case JsonFileType.WINDOWS_HANDLE:
+                # Windows handle
+                # We run mypy with `--platform=linux` so it complains about this:
+                startupinfo = subprocess.STARTUPINFO()  # type: ignore[attr-defined]
+                startupinfo.lpAttributeList = {"handle_list": [self.file]}
+                popen_kwargs['startupinfo'] = startupinfo
+
+    @contextlib.contextmanager
+    def inherit_subprocess(self):
+        if self.file_type == JsonFileType.WINDOWS_HANDLE:
+            os.set_handle_inheritable(self.file, True)
+            try:
+                yield
+            finally:
+                os.set_handle_inheritable(self.file, False)
+        else:
+            yield
+
+    def open(self, mode='r', *, encoding):
+        if self.file_type == JsonFileType.STDOUT:
+            raise ValueError("for STDOUT file type, just use sys.stdout")
+
+        file = self.file
+        if self.file_type == JsonFileType.WINDOWS_HANDLE:
+            import msvcrt
+            # Create a file descriptor from the handle
+            file = msvcrt.open_osfhandle(file, os.O_WRONLY)
+        return open(file, mode, encoding=encoding)
+
+
+@dataclasses.dataclass(slots=True, frozen=True)
+class HuntRefleak:
+    warmups: int
+    runs: int
+    filename: StrPath
+
+
+@dataclasses.dataclass(slots=True, frozen=True)
+class RunTests:
+    tests: TestTuple
+    fail_fast: bool
+    fail_env_changed: bool
+    match_tests: TestFilter
+    match_tests_dict: FilterDict | None
+    rerun: bool
+    forever: bool
+    pgo: bool
+    pgo_extended: bool
+    output_on_failure: bool
+    timeout: float | None
+    verbose: int
+    quiet: bool
+    hunt_refleak: HuntRefleak | None
+    test_dir: StrPath | None
+    use_junit: bool
+    coverage: bool
+    memory_limit: str | None
+    gc_threshold: int | None
+    use_resources: tuple[str, ...]
+    python_cmd: tuple[str, ...] | None
+    randomize: bool
+    random_seed: int | str
+
+    def copy(self, **override) -> 'RunTests':
+        state = dataclasses.asdict(self)
+        state.update(override)
+        return RunTests(**state)
+
+    def create_worker_runtests(self, **override):
+        state = dataclasses.asdict(self)
+        state.update(override)
+        return WorkerRunTests(**state)
+
+    def get_match_tests(self, test_name) -> FilterTuple | None:
+        if self.match_tests_dict is not None:
+            return self.match_tests_dict.get(test_name, None)
+        else:
+            return None
+
+    def get_jobs(self):
+        # Number of run_single_test() calls needed to run all tests.
+        # None means that there is not bound limit (--forever option).
+        if self.forever:
+            return None
+        return len(self.tests)
+
+    def iter_tests(self):
+        if self.forever:
+            while True:
+                yield from self.tests
+        else:
+            yield from self.tests
+
+    def json_file_use_stdout(self) -> bool:
+        # Use STDOUT in two cases:
+        #
+        # - If --python command line option is used;
+        # - On Emscripten and WASI.
+        #
+        # On other platforms, UNIX_FD or WINDOWS_HANDLE can be used.
+        return (
+            bool(self.python_cmd)
+            or support.is_emscripten
+            or support.is_wasi
+        )
+
+
+@dataclasses.dataclass(slots=True, frozen=True)
+class WorkerRunTests(RunTests):
+    json_file: JsonFile
+
+    def as_json(self) -> StrJSON:
+        return json.dumps(self, cls=_EncodeRunTests)
+
+    @staticmethod
+    def from_json(worker_json: StrJSON) -> 'WorkerRunTests':
+        return json.loads(worker_json, object_hook=_decode_runtests)
+
+
+class _EncodeRunTests(json.JSONEncoder):
+    def default(self, o: Any) -> dict[str, Any]:
+        if isinstance(o, WorkerRunTests):
+            result = dataclasses.asdict(o)
+            result["__runtests__"] = True
+            return result
+        else:
+            return super().default(o)
+
+
+def _decode_runtests(data: dict[str, Any]) -> RunTests | dict[str, Any]:
+    if "__runtests__" in data:
+        data.pop('__runtests__')
+        if data['hunt_refleak']:
+            data['hunt_refleak'] = HuntRefleak(**data['hunt_refleak'])
+        if data['json_file']:
+            data['json_file'] = JsonFile(**data['json_file'])
+        return WorkerRunTests(**data)
+    else:
+        return data
diff --git a/Lib/test/libregrtest/save_env.py b/Lib/test/libregrtest/save_env.py
index c7801b767c590c..b2cc381344b2ef 100644
--- a/Lib/test/libregrtest/save_env.py
+++ b/Lib/test/libregrtest/save_env.py
@@ -3,9 +3,11 @@
 import os
 import sys
 import threading
+
 from test import support
 from test.support import os_helper
-from test.libregrtest.utils import print_warning
+
+from .utils import print_warning
 
 
 class SkipTestEnvironment(Exception):
@@ -23,7 +25,7 @@ class SkipTestEnvironment(Exception):
 class saved_test_environment:
     """Save bits of the test environment and restore them at block exit.
 
-        with saved_test_environment(testname, verbose, quiet):
+        with saved_test_environment(test_name, verbose, quiet):
             #stuff
 
     Unless quiet is True, a warning is printed to stderr if any of
@@ -34,8 +36,8 @@ class saved_test_environment:
     items is also printed.
     """
 
-    def __init__(self, testname, verbose=0, quiet=False, *, pgo=False):
-        self.testname = testname
+    def __init__(self, test_name, verbose, quiet, *, pgo):
+        self.test_name = test_name
         self.verbose = verbose
         self.quiet = quiet
         self.pgo = pgo
@@ -323,7 +325,7 @@ def __exit__(self, exc_type, exc_val, exc_tb):
                 restore(original)
                 if not self.quiet and not self.pgo:
                     print_warning(
-                        f"{name} was modified by {self.testname}\n"
+                        f"{name} was modified by {self.test_name}\n"
                         f"  Before: {original}\n"
                         f"  After:  {current} ")
         return False
diff --git a/Lib/test/libregrtest/setup.py b/Lib/test/libregrtest/setup.py
index b76bece7ca08b5..9e9741493e9a5b 100644
--- a/Lib/test/libregrtest/setup.py
+++ b/Lib/test/libregrtest/setup.py
@@ -1,24 +1,33 @@
-import atexit
 import faulthandler
+import gc
 import os
+import random
 import signal
 import sys
 import unittest
 from test import support
 from test.support.os_helper import TESTFN_UNDECODABLE, FS_NONASCII
-try:
-    import gc
-except ImportError:
-    gc = None
 
-from test.libregrtest.utils import (setup_unraisable_hook,
-                                    setup_threading_excepthook)
+from .filter import set_match_tests
+from .runtests import RunTests
+from .utils import (
+    setup_unraisable_hook, setup_threading_excepthook, fix_umask,
+    adjust_rlimit_nofile)
 
 
 UNICODE_GUARD_ENV = "PYTHONREGRTEST_UNICODE_GUARD"
 
 
-def setup_tests(ns):
+def setup_test_dir(testdir: str | None) -> None:
+    if testdir:
+        # Prepend test directory to sys.path, so runtest() will be able
+        # to locate tests
+        sys.path.insert(0, os.path.abspath(testdir))
+
+
+def setup_process():
+    fix_umask()
+
     try:
         stderr_fd = sys.__stderr__.fileno()
     except (ValueError, AttributeError):
@@ -40,14 +49,9 @@ def setup_tests(ns):
         for signum in signals:
             faulthandler.register(signum, chain=True, file=stderr_fd)
 
-    _adjust_resource_limits()
-    replace_stdout()
-    support.record_original_stdout(sys.stdout)
+    adjust_rlimit_nofile()
 
-    if ns.testdir:
-        # Prepend test directory to sys.path, so runtest() will be able
-        # to locate tests
-        sys.path.insert(0, os.path.abspath(ns.testdir))
+    support.record_original_stdout(sys.stdout)
 
     # Some times __path__ and __file__ are not absolute (e.g. while running from
     # Lib/) and, if we change the CWD to run the tests in a temporary dir, some
@@ -66,19 +70,6 @@ def setup_tests(ns):
         if getattr(module, '__file__', None):
             module.__file__ = os.path.abspath(module.__file__)
 
-    if ns.huntrleaks:
-        unittest.BaseTestSuite._cleanup = False
-
-    if ns.memlimit is not None:
-        support.set_memlimit(ns.memlimit)
-
-    if ns.threshold is not None:
-        gc.set_threshold(ns.threshold)
-
-    support.suppress_msvcrt_asserts(ns.verbose and ns.verbose >= 2)
-
-    support.use_resources = ns.use_resources
-
     if hasattr(sys, 'addaudithook'):
         # Add an auditing hook for all tests to ensure PySys_Audit is tested
         def _test_audit_hook(name, args):
@@ -88,21 +79,6 @@ def _test_audit_hook(name, args):
     setup_unraisable_hook()
     setup_threading_excepthook()
 
-    if ns.timeout is not None:
-        # For a slow buildbot worker, increase SHORT_TIMEOUT and LONG_TIMEOUT
-        support.SHORT_TIMEOUT = max(support.SHORT_TIMEOUT, ns.timeout / 40)
-        support.LONG_TIMEOUT = max(support.LONG_TIMEOUT, ns.timeout / 4)
-
-        # If --timeout is short: reduce timeouts
-        support.LOOPBACK_TIMEOUT = min(support.LOOPBACK_TIMEOUT, ns.timeout)
-        support.INTERNET_TIMEOUT = min(support.INTERNET_TIMEOUT, ns.timeout)
-        support.SHORT_TIMEOUT = min(support.SHORT_TIMEOUT, ns.timeout)
-        support.LONG_TIMEOUT = min(support.LONG_TIMEOUT, ns.timeout)
-
-    if ns.xmlpath:
-        from test.support.testresult import RegressionTestResult
-        RegressionTestResult.USE_XML = True
-
     # Ensure there's a non-ASCII character in env vars at all times to force
     # tests consider this case. See BPO-44647 for details.
     if TESTFN_UNDECODABLE and os.supports_bytes_environ:
@@ -111,49 +87,47 @@ def _test_audit_hook(name, args):
         os.environ.setdefault(UNICODE_GUARD_ENV, FS_NONASCII)
 
 
-def replace_stdout():
-    """Set stdout encoder error handler to backslashreplace (as stderr error
-    handler) to avoid UnicodeEncodeError when printing a traceback"""
-    stdout = sys.stdout
-    try:
-        fd = stdout.fileno()
-    except ValueError:
-        # On IDLE, sys.stdout has no file descriptor and is not a TextIOWrapper
-        # object. Leaving sys.stdout unchanged.
-        #
-        # Catch ValueError to catch io.UnsupportedOperation on TextIOBase
-        # and ValueError on a closed stream.
-        return
+def setup_tests(runtests: RunTests):
+    support.verbose = runtests.verbose
+    support.failfast = runtests.fail_fast
+    support.PGO = runtests.pgo
+    support.PGO_EXTENDED = runtests.pgo_extended
 
-    sys.stdout = open(fd, 'w',
-        encoding=stdout.encoding,
-        errors="backslashreplace",
-        closefd=False,
-        newline='\n')
+    set_match_tests(runtests.match_tests)
 
-    def restore_stdout():
-        sys.stdout.close()
-        sys.stdout = stdout
-    atexit.register(restore_stdout)
+    if runtests.use_junit:
+        support.junit_xml_list = []
+        from .testresult import RegressionTestResult
+        RegressionTestResult.USE_XML = True
+    else:
+        support.junit_xml_list = None
 
+    if runtests.memory_limit is not None:
+        support.set_memlimit(runtests.memory_limit)
 
-def _adjust_resource_limits():
-    """Adjust the system resource limits (ulimit) if needed."""
-    try:
-        import resource
-        from resource import RLIMIT_NOFILE
-    except ImportError:
-        return
-    fd_limit, max_fds = resource.getrlimit(RLIMIT_NOFILE)
-    # On macOS the default fd limit is sometimes too low (256) for our
-    # test suite to succeed.  Raise it to something more reasonable.
-    # 1024 is a common Linux default.
-    desired_fds = 1024
-    if fd_limit < desired_fds and fd_limit < max_fds:
-        new_fd_limit = min(desired_fds, max_fds)
-        try:
-            resource.setrlimit(RLIMIT_NOFILE, (new_fd_limit, max_fds))
-            print(f"Raised RLIMIT_NOFILE: {fd_limit} -> {new_fd_limit}")
-        except (ValueError, OSError) as err:
-            print(f"Unable to raise RLIMIT_NOFILE from {fd_limit} to "
-                  f"{new_fd_limit}: {err}.")
+    support.suppress_msvcrt_asserts(runtests.verbose >= 2)
+
+    support.use_resources = runtests.use_resources
+
+    timeout = runtests.timeout
+    if timeout is not None:
+        # For a slow buildbot worker, increase SHORT_TIMEOUT and LONG_TIMEOUT
+        support.LOOPBACK_TIMEOUT = max(support.LOOPBACK_TIMEOUT, timeout / 120)
+        # don't increase INTERNET_TIMEOUT
+        support.SHORT_TIMEOUT = max(support.SHORT_TIMEOUT, timeout / 40)
+        support.LONG_TIMEOUT = max(support.LONG_TIMEOUT, timeout / 4)
+
+        # If --timeout is short: reduce timeouts
+        support.LOOPBACK_TIMEOUT = min(support.LOOPBACK_TIMEOUT, timeout)
+        support.INTERNET_TIMEOUT = min(support.INTERNET_TIMEOUT, timeout)
+        support.SHORT_TIMEOUT = min(support.SHORT_TIMEOUT, timeout)
+        support.LONG_TIMEOUT = min(support.LONG_TIMEOUT, timeout)
+
+    if runtests.hunt_refleak:
+        # private attribute that mypy doesn't know about:
+        unittest.BaseTestSuite._cleanup = False  # type: ignore[attr-defined]
+
+    if runtests.gc_threshold is not None:
+        gc.set_threshold(runtests.gc_threshold)
+
+    random.seed(runtests.random_seed)
diff --git a/Lib/test/libregrtest/single.py b/Lib/test/libregrtest/single.py
new file mode 100644
index 00000000000000..235029d8620ff5
--- /dev/null
+++ b/Lib/test/libregrtest/single.py
@@ -0,0 +1,318 @@
+import faulthandler
+import gc
+import importlib
+import io
+import sys
+import time
+import traceback
+import unittest
+
+from test import support
+from test.support import threading_helper
+
+from .filter import match_test
+from .result import State, TestResult, TestStats
+from .runtests import RunTests
+from .save_env import saved_test_environment
+from .setup import setup_tests
+from .testresult import get_test_runner
+from .utils import (
+    TestName,
+    clear_caches, remove_testfn, abs_module_name, print_warning)
+
+
+# Minimum duration of a test to display its duration or to mention that
+# the test is running in background
+PROGRESS_MIN_TIME = 30.0   # seconds
+
+
+def run_unittest(test_mod):
+    loader = unittest.TestLoader()
+    tests = loader.loadTestsFromModule(test_mod)
+    for error in loader.errors:
+        print(error, file=sys.stderr)
+    if loader.errors:
+        raise Exception("errors while loading tests")
+    _filter_suite(tests, match_test)
+    return _run_suite(tests)
+
+def _filter_suite(suite, pred):
+    """Recursively filter test cases in a suite based on a predicate."""
+    newtests = []
+    for test in suite._tests:
+        if isinstance(test, unittest.TestSuite):
+            _filter_suite(test, pred)
+            newtests.append(test)
+        else:
+            if pred(test):
+                newtests.append(test)
+    suite._tests = newtests
+
+def _run_suite(suite):
+    """Run tests from a unittest.TestSuite-derived class."""
+    runner = get_test_runner(sys.stdout,
+                             verbosity=support.verbose,
+                             capture_output=(support.junit_xml_list is not None))
+
+    result = runner.run(suite)
+
+    if support.junit_xml_list is not None:
+        support.junit_xml_list.append(result.get_xml_element())
+
+    if not result.testsRun and not result.skipped and not result.errors:
+        raise support.TestDidNotRun
+    if not result.wasSuccessful():
+        stats = TestStats.from_unittest(result)
+        if len(result.errors) == 1 and not result.failures:
+            err = result.errors[0][1]
+        elif len(result.failures) == 1 and not result.errors:
+            err = result.failures[0][1]
+        else:
+            err = "multiple errors occurred"
+            if not support.verbose: err += "; run in verbose mode for details"
+        errors = [(str(tc), exc_str) for tc, exc_str in result.errors]
+        failures = [(str(tc), exc_str) for tc, exc_str in result.failures]
+        raise support.TestFailedWithDetails(err, errors, failures, stats=stats)
+    return result
+
+
+def regrtest_runner(result: TestResult, test_func, runtests: RunTests) -> None:
+    # Run test_func(), collect statistics, and detect reference and memory
+    # leaks.
+    if runtests.hunt_refleak:
+        from .refleak import runtest_refleak
+        refleak, test_result = runtest_refleak(result.test_name, test_func,
+                                               runtests.hunt_refleak,
+                                               runtests.quiet)
+    else:
+        test_result = test_func()
+        refleak = False
+
+    if refleak:
+        result.state = State.REFLEAK
+
+    stats: TestStats | None
+
+    match test_result:
+        case TestStats():
+            stats = test_result
+        case unittest.TestResult():
+            stats = TestStats.from_unittest(test_result)
+        case None:
+            print_warning(f"{result.test_name} test runner returned None: {test_func}")
+            stats = None
+        case _:
+            # Don't import doctest at top level since only few tests return
+            # a doctest.TestResult instance.
+            import doctest
+            if isinstance(test_result, doctest.TestResults):
+                stats = TestStats.from_doctest(test_result)
+            else:
+                print_warning(f"Unknown test result type: {type(test_result)}")
+                stats = None
+
+    result.stats = stats
+
+
+# Storage of uncollectable GC objects (gc.garbage)
+GC_GARBAGE = []
+
+
+def _load_run_test(result: TestResult, runtests: RunTests) -> None:
+    # Load the test module and run the tests.
+    test_name = result.test_name
+    module_name = abs_module_name(test_name, runtests.test_dir)
+    test_mod = importlib.import_module(module_name)
+
+    if hasattr(test_mod, "test_main"):
+        # https://github.com/python/cpython/issues/89392
+        raise Exception(f"Module {test_name} defines test_main() which "
+                        f"is no longer supported by regrtest")
+    def test_func():
+        return run_unittest(test_mod)
+
+    try:
+        regrtest_runner(result, test_func, runtests)
+    finally:
+        # First kill any dangling references to open files etc.
+        # This can also issue some ResourceWarnings which would otherwise get
+        # triggered during the following test run, and possibly produce
+        # failures.
+        support.gc_collect()
+
+        remove_testfn(test_name, runtests.verbose)
+
+    if gc.garbage:
+        support.environment_altered = True
+        print_warning(f"{test_name} created {len(gc.garbage)} "
+                      f"uncollectable object(s)")
+
+        # move the uncollectable objects somewhere,
+        # so we don't see them again
+        GC_GARBAGE.extend(gc.garbage)
+        gc.garbage.clear()
+
+    support.reap_children()
+
+
+def _runtest_env_changed_exc(result: TestResult, runtests: RunTests,
+                             display_failure: bool = True) -> None:
+    # Handle exceptions, detect environment changes.
+
+    # Reset the environment_altered flag to detect if a test altered
+    # the environment
+    support.environment_altered = False
+
+    pgo = runtests.pgo
+    if pgo:
+        display_failure = False
+    quiet = runtests.quiet
+
+    test_name = result.test_name
+    try:
+        clear_caches()
+        support.gc_collect()
+
+        with saved_test_environment(test_name,
+                                    runtests.verbose, quiet, pgo=pgo):
+            _load_run_test(result, runtests)
+    except support.ResourceDenied as exc:
+        if not quiet and not pgo:
+            print(f"{test_name} skipped -- {exc}", flush=True)
+        result.state = State.RESOURCE_DENIED
+        return
+    except unittest.SkipTest as exc:
+        if not quiet and not pgo:
+            print(f"{test_name} skipped -- {exc}", flush=True)
+        result.state = State.SKIPPED
+        return
+    except support.TestFailedWithDetails as exc:
+        msg = f"test {test_name} failed"
+        if display_failure:
+            msg = f"{msg} -- {exc}"
+        print(msg, file=sys.stderr, flush=True)
+        result.state = State.FAILED
+        result.errors = exc.errors
+        result.failures = exc.failures
+        result.stats = exc.stats
+        return
+    except support.TestFailed as exc:
+        msg = f"test {test_name} failed"
+        if display_failure:
+            msg = f"{msg} -- {exc}"
+        print(msg, file=sys.stderr, flush=True)
+        result.state = State.FAILED
+        result.stats = exc.stats
+        return
+    except support.TestDidNotRun:
+        result.state = State.DID_NOT_RUN
+        return
+    except KeyboardInterrupt:
+        print()
+        result.state = State.INTERRUPTED
+        return
+    except:
+        if not pgo:
+            msg = traceback.format_exc()
+            print(f"test {test_name} crashed -- {msg}",
+                  file=sys.stderr, flush=True)
+        result.state = State.UNCAUGHT_EXC
+        return
+
+    if support.environment_altered:
+        result.set_env_changed()
+    # Don't override the state if it was already set (REFLEAK or ENV_CHANGED)
+    if result.state is None:
+        result.state = State.PASSED
+
+
+def _runtest(result: TestResult, runtests: RunTests) -> None:
+    # Capture stdout and stderr, set faulthandler timeout,
+    # and create JUnit XML report.
+    verbose = runtests.verbose
+    output_on_failure = runtests.output_on_failure
+    timeout = runtests.timeout
+
+    if timeout is not None and threading_helper.can_start_thread:
+        use_timeout = True
+        faulthandler.dump_traceback_later(timeout, exit=True)
+    else:
+        use_timeout = False
+
+    try:
+        setup_tests(runtests)
+
+        if output_on_failure:
+            support.verbose = True
+
+            stream = io.StringIO()
+            orig_stdout = sys.stdout
+            orig_stderr = sys.stderr
+            print_warning = support.print_warning
+            orig_print_warnings_stderr = print_warning.orig_stderr
+
+            output = None
+            try:
+                sys.stdout = stream
+                sys.stderr = stream
+                # print_warning() writes into the temporary stream to preserve
+                # messages order. If support.environment_altered becomes true,
+                # warnings will be written to sys.stderr below.
+                print_warning.orig_stderr = stream
+
+                _runtest_env_changed_exc(result, runtests, display_failure=False)
+                # Ignore output if the test passed successfully
+                if result.state != State.PASSED:
+                    output = stream.getvalue()
+            finally:
+                sys.stdout = orig_stdout
+                sys.stderr = orig_stderr
+                print_warning.orig_stderr = orig_print_warnings_stderr
+
+            if output is not None:
+                sys.stderr.write(output)
+                sys.stderr.flush()
+        else:
+            # Tell tests to be moderately quiet
+            support.verbose = verbose
+            _runtest_env_changed_exc(result, runtests,
+                                     display_failure=not verbose)
+
+        xml_list = support.junit_xml_list
+        if xml_list:
+            import xml.etree.ElementTree as ET
+            result.xml_data = [ET.tostring(x).decode('us-ascii')
+                               for x in xml_list]
+    finally:
+        if use_timeout:
+            faulthandler.cancel_dump_traceback_later()
+        support.junit_xml_list = None
+
+
+def run_single_test(test_name: TestName, runtests: RunTests) -> TestResult:
+    """Run a single test.
+
+    test_name -- the name of the test
+
+    Returns a TestResult.
+
+    If runtests.use_junit, xml_data is a list containing each generated
+    testsuite element.
+    """
+    start_time = time.perf_counter()
+    result = TestResult(test_name)
+    pgo = runtests.pgo
+    try:
+        _runtest(result, runtests)
+    except:
+        if not pgo:
+            msg = traceback.format_exc()
+            print(f"test {test_name} crashed -- {msg}",
+                  file=sys.stderr, flush=True)
+        result.state = State.UNCAUGHT_EXC
+
+    sys.stdout.flush()
+    sys.stderr.flush()
+
+    result.duration = time.perf_counter() - start_time
+    return result
diff --git a/Lib/test/support/testresult.py b/Lib/test/libregrtest/testresult.py
similarity index 98%
rename from Lib/test/support/testresult.py
rename to Lib/test/libregrtest/testresult.py
index 14474be222dc4b..de23fdd59ded95 100644
--- a/Lib/test/support/testresult.py
+++ b/Lib/test/libregrtest/testresult.py
@@ -8,6 +8,7 @@
 import time
 import traceback
 import unittest
+from test import support
 
 class RegressionTestResult(unittest.TextTestResult):
     USE_XML = False
@@ -112,6 +113,8 @@ def addExpectedFailure(self, test, err):
     def addFailure(self, test, err):
         self._add_result(test, True, failure=self.__makeErrorDict(*err))
         super().addFailure(test, err)
+        if support.failfast:
+            self.stop()
 
     def addSkip(self, test, reason):
         self._add_result(test, skipped=reason)
diff --git a/Lib/test/libregrtest/utils.py b/Lib/test/libregrtest/utils.py
index fd46819fd903fe..26481e71221ade 100644
--- a/Lib/test/libregrtest/utils.py
+++ b/Lib/test/libregrtest/utils.py
@@ -1,9 +1,60 @@
+import contextlib
+import faulthandler
+import locale
 import math
 import os.path
+import platform
+import random
+import shlex
+import signal
+import subprocess
 import sys
 import sysconfig
+import tempfile
 import textwrap
+from collections.abc import Callable, Iterable
+
 from test import support
+from test.support import os_helper
+from test.support import threading_helper
+
+
+# All temporary files and temporary directories created by libregrtest should
+# use TMP_PREFIX so cleanup_temp_dir() can remove them all.
+TMP_PREFIX = 'test_python_'
+WORK_DIR_PREFIX = TMP_PREFIX
+WORKER_WORK_DIR_PREFIX = WORK_DIR_PREFIX + 'worker_'
+
+# bpo-38203: Maximum delay in seconds to exit Python (call Py_Finalize()).
+# Used to protect against threading._shutdown() hang.
+# Must be smaller than buildbot "1200 seconds without output" limit.
+EXIT_TIMEOUT = 120.0
+
+
+ALL_RESOURCES = ('audio', 'curses', 'largefile', 'network',
+                 'decimal', 'cpu', 'subprocess', 'urlfetch', 'gui', 'walltime')
+
+# Other resources excluded from --use=all:
+#
+# - extralagefile (ex: test_zipfile64): really too slow to be enabled
+#   "by default"
+# - tzdata: while needed to validate fully test_datetime, it makes
+#   test_datetime too slow (15-20 min on some buildbots) and so is disabled by
+#   default (see bpo-30822).
+RESOURCE_NAMES = ALL_RESOURCES + ('extralargefile', 'tzdata')
+
+
+# Types for types hints
+StrPath = str
+TestName = str
+StrJSON = str
+TestTuple = tuple[TestName, ...]
+TestList = list[TestName]
+# --match and --ignore options: list of patterns
+# ('*' joker character can be used)
+TestFilter = list[tuple[TestName, bool]]
+FilterTuple = tuple[TestName, ...]
+FilterDict = dict[TestName, FilterTuple]
 
 
 def format_duration(seconds):
@@ -31,7 +82,7 @@ def format_duration(seconds):
     return ' '.join(parts)
 
 
-def removepy(names):
+def strip_py_suffix(names: list[str] | None) -> None:
     if not names:
         return
     for idx, name in enumerate(names):
@@ -40,11 +91,20 @@ def removepy(names):
             names[idx] = basename
 
 
+def plural(n, singular, plural=None):
+    if n == 1:
+        return singular
+    elif plural is not None:
+        return plural
+    else:
+        return singular + 's'
+
+
 def count(n, word):
     if n == 1:
-        return "%d %s" % (n, word)
+        return f"{n} {word}"
     else:
-        return "%d %ss" % (n, word)
+        return f"{n} {word}s"
 
 
 def printlist(x, width=70, indent=4, file=None):
@@ -228,6 +288,11 @@ def get_build_info():
     ldflags_nodist = sysconfig.get_config_var('PY_LDFLAGS_NODIST') or ''
 
     build = []
+
+    # --disable-gil
+    if sysconfig.get_config_var('Py_GIL_DISABLED'):
+        build.append("free_threading")
+
     if hasattr(sys, 'gettotalrefcount'):
         # --with-pydebug
         build.append('debug')
@@ -259,16 +324,8 @@ def get_build_info():
     elif '-flto' in ldflags_nodist:
         optimizations.append('LTO')
 
-    # --enable-optimizations
-    pgo_options = (
-        # GCC
-        '-fprofile-use',
-        # clang: -fprofile-instr-use=code.profclangd
-        '-fprofile-instr-use',
-        # ICC
-        "-prof-use",
-    )
-    if any(option in cflags_nodist for option in pgo_options):
+    if support.check_cflags_pgo():
+        # PGO (--enable-optimizations)
         optimizations.append('PGO')
     if optimizations:
         build.append('+'.join(optimizations))
@@ -300,3 +357,334 @@ def get_build_info():
         build.append("dtrace")
 
     return build
+
+
+def get_temp_dir(tmp_dir: StrPath | None = None) -> StrPath:
+    if tmp_dir:
+        tmp_dir = os.path.expanduser(tmp_dir)
+    else:
+        # When tests are run from the Python build directory, it is best practice
+        # to keep the test files in a subfolder.  This eases the cleanup of leftover
+        # files using the "make distclean" command.
+        if sysconfig.is_python_build():
+            if not support.is_wasi:
+                tmp_dir = sysconfig.get_config_var('abs_builddir')
+                if tmp_dir is None:
+                    tmp_dir = sysconfig.get_config_var('abs_srcdir')
+                    if not tmp_dir:
+                        # gh-74470: On Windows, only srcdir is available. Using
+                        # abs_builddir mostly matters on UNIX when building
+                        # Python out of the source tree, especially when the
+                        # source tree is read only.
+                        tmp_dir = sysconfig.get_config_var('srcdir')
+                        if not tmp_dir:
+                            raise RuntimeError(
+                                "Could not determine the correct value for tmp_dir"
+                            )
+                tmp_dir = os.path.join(tmp_dir, 'build')
+            else:
+                # WASI platform
+                tmp_dir = sysconfig.get_config_var('projectbase')
+                if not tmp_dir:
+                    raise RuntimeError(
+                        "sysconfig.get_config_var('projectbase') "
+                        f"unexpectedly returned {tmp_dir!r} on WASI"
+                    )
+                tmp_dir = os.path.join(tmp_dir, 'build')
+
+                # When get_temp_dir() is called in a worker process,
+                # get_temp_dir() path is different than in the parent process
+                # which is not a WASI process. So the parent does not create
+                # the same "tmp_dir" than the test worker process.
+                os.makedirs(tmp_dir, exist_ok=True)
+        else:
+            tmp_dir = tempfile.gettempdir()
+
+    return os.path.abspath(tmp_dir)
+
+
+def fix_umask():
+    if support.is_emscripten:
+        # Emscripten has default umask 0o777, which breaks some tests.
+        # see https://github.com/emscripten-core/emscripten/issues/17269
+        old_mask = os.umask(0)
+        if old_mask == 0o777:
+            os.umask(0o027)
+        else:
+            os.umask(old_mask)
+
+
+def get_work_dir(parent_dir: StrPath, worker: bool = False) -> StrPath:
+    # Define a writable temp dir that will be used as cwd while running
+    # the tests. The name of the dir includes the pid to allow parallel
+    # testing (see the -j option).
+    # Emscripten and WASI have stubbed getpid(), Emscripten has only
+    # milisecond clock resolution. Use randint() instead.
+    if support.is_emscripten or support.is_wasi:
+        nounce = random.randint(0, 1_000_000)
+    else:
+        nounce = os.getpid()
+
+    if worker:
+        work_dir = WORK_DIR_PREFIX + str(nounce)
+    else:
+        work_dir = WORKER_WORK_DIR_PREFIX + str(nounce)
+    work_dir += os_helper.FS_NONASCII
+    work_dir = os.path.join(parent_dir, work_dir)
+    return work_dir
+
+
+@contextlib.contextmanager
+def exit_timeout():
+    try:
+        yield
+    except SystemExit as exc:
+        # bpo-38203: Python can hang at exit in Py_Finalize(), especially
+        # on threading._shutdown() call: put a timeout
+        if threading_helper.can_start_thread:
+            faulthandler.dump_traceback_later(EXIT_TIMEOUT, exit=True)
+        sys.exit(exc.code)
+
+
+def remove_testfn(test_name: TestName, verbose: int) -> None:
+    # Try to clean up os_helper.TESTFN if left behind.
+    #
+    # While tests shouldn't leave any files or directories behind, when a test
+    # fails that can be tedious for it to arrange.  The consequences can be
+    # especially nasty on Windows, since if a test leaves a file open, it
+    # cannot be deleted by name (while there's nothing we can do about that
+    # here either, we can display the name of the offending test, which is a
+    # real help).
+    name = os_helper.TESTFN
+    if not os.path.exists(name):
+        return
+
+    nuker: Callable[[str], None]
+    if os.path.isdir(name):
+        import shutil
+        kind, nuker = "directory", shutil.rmtree
+    elif os.path.isfile(name):
+        kind, nuker = "file", os.unlink
+    else:
+        raise RuntimeError(f"os.path says {name!r} exists but is neither "
+                           f"directory nor file")
+
+    if verbose:
+        print_warning(f"{test_name} left behind {kind} {name!r}")
+        support.environment_altered = True
+
+    try:
+        import stat
+        # fix possible permissions problems that might prevent cleanup
+        os.chmod(name, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO)
+        nuker(name)
+    except Exception as exc:
+        print_warning(f"{test_name} left behind {kind} {name!r} "
+                      f"and it couldn't be removed: {exc}")
+
+
+def abs_module_name(test_name: TestName, test_dir: StrPath | None) -> TestName:
+    if test_name.startswith('test.') or test_dir:
+        return test_name
+    else:
+        # Import it from the test package
+        return 'test.' + test_name
+
+
+# gh-90681: When rerunning tests, we might need to rerun the whole
+# class or module suite if some its life-cycle hooks fail.
+# Test level hooks are not affected.
+_TEST_LIFECYCLE_HOOKS = frozenset((
+    'setUpClass', 'tearDownClass',
+    'setUpModule', 'tearDownModule',
+))
+
+def normalize_test_name(test_full_name, *, is_error=False):
+    short_name = test_full_name.split(" ")[0]
+    if is_error and short_name in _TEST_LIFECYCLE_HOOKS:
+        if test_full_name.startswith(('setUpModule (', 'tearDownModule (')):
+            # if setUpModule() or tearDownModule() failed, don't filter
+            # tests with the test file name, don't use use filters.
+            return None
+
+        # This means that we have a failure in a life-cycle hook,
+        # we need to rerun the whole module or class suite.
+        # Basically the error looks like this:
+        #    ERROR: setUpClass (test.test_reg_ex.RegTest)
+        # or
+        #    ERROR: setUpModule (test.test_reg_ex)
+        # So, we need to parse the class / module name.
+        lpar = test_full_name.index('(')
+        rpar = test_full_name.index(')')
+        return test_full_name[lpar + 1: rpar].split('.')[-1]
+    return short_name
+
+
+def adjust_rlimit_nofile():
+    """
+    On macOS the default fd limit (RLIMIT_NOFILE) is sometimes too low (256)
+    for our test suite to succeed. Raise it to something more reasonable. 1024
+    is a common Linux default.
+    """
+    try:
+        import resource
+    except ImportError:
+        return
+
+    fd_limit, max_fds = resource.getrlimit(resource.RLIMIT_NOFILE)
+
+    desired_fds = 1024
+
+    if fd_limit < desired_fds and fd_limit < max_fds:
+        new_fd_limit = min(desired_fds, max_fds)
+        try:
+            resource.setrlimit(resource.RLIMIT_NOFILE,
+                               (new_fd_limit, max_fds))
+            print(f"Raised RLIMIT_NOFILE: {fd_limit} -> {new_fd_limit}")
+        except (ValueError, OSError) as err:
+            print_warning(f"Unable to raise RLIMIT_NOFILE from {fd_limit} to "
+                          f"{new_fd_limit}: {err}.")
+
+
+def get_host_runner():
+    if (hostrunner := os.environ.get("_PYTHON_HOSTRUNNER")) is None:
+        hostrunner = sysconfig.get_config_var("HOSTRUNNER")
+    return hostrunner
+
+
+def is_cross_compiled():
+    return ('_PYTHON_HOST_PLATFORM' in os.environ)
+
+
+def format_resources(use_resources: Iterable[str]):
+    use_resources = set(use_resources)
+    all_resources = set(ALL_RESOURCES)
+
+    # Express resources relative to "all"
+    relative_all = ['all']
+    for name in sorted(all_resources - use_resources):
+        relative_all.append(f'-{name}')
+    for name in sorted(use_resources - all_resources):
+        relative_all.append(f'{name}')
+    all_text = ','.join(relative_all)
+    all_text = f"resources: {all_text}"
+
+    # List of enabled resources
+    text = ','.join(sorted(use_resources))
+    text = f"resources ({len(use_resources)}): {text}"
+
+    # Pick the shortest string (prefer relative to all if lengths are equal)
+    if len(all_text) <= len(text):
+        return all_text
+    else:
+        return text
+
+
+def display_header(use_resources: tuple[str, ...],
+                   python_cmd: tuple[str, ...] | None):
+    # Print basic platform information
+    print("==", platform.python_implementation(), *sys.version.split())
+    print("==", platform.platform(aliased=True),
+                  "%s-endian" % sys.byteorder)
+    print("== Python build:", ' '.join(get_build_info()))
+    print("== cwd:", os.getcwd())
+
+    cpu_count: object = os.cpu_count()
+    if cpu_count:
+        # The function is new in Python 3.13; mypy doesn't know about it yet:
+        process_cpu_count = os.process_cpu_count()  # type: ignore[attr-defined]
+        if process_cpu_count and process_cpu_count != cpu_count:
+            cpu_count = f"{process_cpu_count} (process) / {cpu_count} (system)"
+        print("== CPU count:", cpu_count)
+    print("== encodings: locale=%s FS=%s"
+          % (locale.getencoding(), sys.getfilesystemencoding()))
+
+    if use_resources:
+        text = format_resources(use_resources)
+        print(f"== {text}")
+    else:
+        print("== resources: all test resources are disabled, "
+              "use -u option to unskip tests")
+
+    cross_compile = is_cross_compiled()
+    if cross_compile:
+        print("== cross compiled: Yes")
+    if python_cmd:
+        cmd = shlex.join(python_cmd)
+        print(f"== host python: {cmd}")
+
+        get_cmd = [*python_cmd, '-m', 'platform']
+        proc = subprocess.run(
+            get_cmd,
+            stdout=subprocess.PIPE,
+            text=True,
+            cwd=os_helper.SAVEDCWD)
+        stdout = proc.stdout.replace('\n', ' ').strip()
+        if stdout:
+            print(f"== host platform: {stdout}")
+        elif proc.returncode:
+            print(f"== host platform: <command failed with exit code {proc.returncode}>")
+    else:
+        hostrunner = get_host_runner()
+        if hostrunner:
+            print(f"== host runner: {hostrunner}")
+
+    # This makes it easier to remember what to set in your local
+    # environment when trying to reproduce a sanitizer failure.
+    asan = support.check_sanitizer(address=True)
+    msan = support.check_sanitizer(memory=True)
+    ubsan = support.check_sanitizer(ub=True)
+    sanitizers = []
+    if asan:
+        sanitizers.append("address")
+    if msan:
+        sanitizers.append("memory")
+    if ubsan:
+        sanitizers.append("undefined behavior")
+    if sanitizers:
+        print(f"== sanitizers: {', '.join(sanitizers)}")
+        for sanitizer, env_var in (
+            (asan, "ASAN_OPTIONS"),
+            (msan, "MSAN_OPTIONS"),
+            (ubsan, "UBSAN_OPTIONS"),
+        ):
+            options= os.environ.get(env_var)
+            if sanitizer and options is not None:
+                print(f"== {env_var}={options!r}")
+
+    print(flush=True)
+
+
+def cleanup_temp_dir(tmp_dir: StrPath):
+    import glob
+
+    path = os.path.join(glob.escape(tmp_dir), TMP_PREFIX + '*')
+    print("Cleanup %s directory" % tmp_dir)
+    for name in glob.glob(path):
+        if os.path.isdir(name):
+            print("Remove directory: %s" % name)
+            os_helper.rmtree(name)
+        else:
+            print("Remove file: %s" % name)
+            os_helper.unlink(name)
+
+WINDOWS_STATUS = {
+    0xC0000005: "STATUS_ACCESS_VIOLATION",
+    0xC00000FD: "STATUS_STACK_OVERFLOW",
+    0xC000013A: "STATUS_CONTROL_C_EXIT",
+}
+
+def get_signal_name(exitcode):
+    if exitcode < 0:
+        signum = -exitcode
+        try:
+            return signal.Signals(signum).name
+        except ValueError:
+            pass
+
+    try:
+        return WINDOWS_STATUS[exitcode]
+    except KeyError:
+        pass
+
+    return None
diff --git a/Lib/test/libregrtest/worker.py b/Lib/test/libregrtest/worker.py
new file mode 100644
index 00000000000000..7a6d33d4499943
--- /dev/null
+++ b/Lib/test/libregrtest/worker.py
@@ -0,0 +1,130 @@
+import subprocess
+import sys
+import os
+from typing import Any, NoReturn
+
+from test import support
+from test.support import os_helper, Py_DEBUG
+
+from .setup import setup_process, setup_test_dir
+from .runtests import WorkerRunTests, JsonFile, JsonFileType
+from .single import run_single_test
+from .utils import (
+    StrPath, StrJSON, TestFilter,
+    get_temp_dir, get_work_dir, exit_timeout)
+
+
+USE_PROCESS_GROUP = (hasattr(os, "setsid") and hasattr(os, "killpg"))
+
+
+def create_worker_process(runtests: WorkerRunTests, output_fd: int,
+                          tmp_dir: StrPath | None = None) -> subprocess.Popen:
+    python_cmd = runtests.python_cmd
+    worker_json = runtests.as_json()
+
+    python_opts = support.args_from_interpreter_flags()
+    if python_cmd is not None:
+        executable = python_cmd
+        # Remove -E option, since --python=COMMAND can set PYTHON environment
+        # variables, such as PYTHONPATH, in the worker process.
+        python_opts = [opt for opt in python_opts if opt != "-E"]
+    else:
+        executable = (sys.executable,)
+    if runtests.coverage:
+        python_opts.append("-Xpresite=test.cov")
+    cmd = [*executable, *python_opts,
+           '-u',    # Unbuffered stdout and stderr
+           '-m', 'test.libregrtest.worker',
+           worker_json]
+
+    env = dict(os.environ)
+    if tmp_dir is not None:
+        env['TMPDIR'] = tmp_dir
+        env['TEMP'] = tmp_dir
+        env['TMP'] = tmp_dir
+
+    # Running the child from the same working directory as regrtest's original
+    # invocation ensures that TEMPDIR for the child is the same when
+    # sysconfig.is_python_build() is true. See issue 15300.
+    #
+    # Emscripten and WASI Python must start in the Python source code directory
+    # to get 'python.js' or 'python.wasm' file. Then worker_process() changes
+    # to a temporary directory created to run tests.
+    work_dir = os_helper.SAVEDCWD
+
+    kwargs: dict[str, Any] = dict(
+        env=env,
+        stdout=output_fd,
+        # bpo-45410: Write stderr into stdout to keep messages order
+        stderr=output_fd,
+        text=True,
+        close_fds=True,
+        cwd=work_dir,
+    )
+    if USE_PROCESS_GROUP:
+        kwargs['start_new_session'] = True
+
+    # Pass json_file to the worker process
+    json_file = runtests.json_file
+    json_file.configure_subprocess(kwargs)
+
+    with json_file.inherit_subprocess():
+        return subprocess.Popen(cmd, **kwargs)
+
+
+def worker_process(worker_json: StrJSON) -> NoReturn:
+    runtests = WorkerRunTests.from_json(worker_json)
+    test_name = runtests.tests[0]
+    match_tests: TestFilter = runtests.match_tests
+    json_file: JsonFile = runtests.json_file
+
+    setup_test_dir(runtests.test_dir)
+    setup_process()
+
+    if runtests.rerun:
+        if match_tests:
+            matching = "matching: " + ", ".join(pattern for pattern, result in match_tests if result)
+            print(f"Re-running {test_name} in verbose mode ({matching})", flush=True)
+        else:
+            print(f"Re-running {test_name} in verbose mode", flush=True)
+
+    result = run_single_test(test_name, runtests)
+    if runtests.coverage:
+        if "test.cov" in sys.modules:  # imported by -Xpresite=
+            result.covered_lines = list(sys.modules["test.cov"].coverage)
+        elif not Py_DEBUG:
+            print(
+                "Gathering coverage in worker processes requires --with-pydebug",
+                flush=True,
+            )
+        else:
+            raise LookupError(
+                "`test.cov` not found in sys.modules but coverage wanted"
+            )
+
+    if json_file.file_type == JsonFileType.STDOUT:
+        print()
+        result.write_json_into(sys.stdout)
+    else:
+        with json_file.open('w', encoding='utf-8') as json_fp:
+            result.write_json_into(json_fp)
+
+    sys.exit(0)
+
+
+def main():
+    if len(sys.argv) != 2:
+        print("usage: python -m test.libregrtest.worker JSON")
+        sys.exit(1)
+    worker_json = sys.argv[1]
+
+    tmp_dir = get_temp_dir()
+    work_dir = get_work_dir(tmp_dir, worker=True)
+
+    with exit_timeout():
+        with os_helper.temp_cwd(work_dir, quiet=True):
+            worker_process(worker_json)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/Lib/test/list_tests.py b/Lib/test/list_tests.py
index fe3ee80b8d461f..d9ab21d4941cdb 100644
--- a/Lib/test/list_tests.py
+++ b/Lib/test/list_tests.py
@@ -6,7 +6,7 @@
 from functools import cmp_to_key
 
 from test import seq_tests
-from test.support import ALWAYS_EQ, NEVER_EQ
+from test.support import ALWAYS_EQ, NEVER_EQ, Py_C_RECURSION_LIMIT
 
 
 class CommonTest(seq_tests.CommonTest):
@@ -61,7 +61,7 @@ def test_repr(self):
 
     def test_repr_deep(self):
         a = self.type2test([])
-        for i in range(sys.getrecursionlimit() + 100):
+        for i in range(Py_C_RECURSION_LIMIT + 1):
             a = self.type2test([a])
         self.assertRaises(RecursionError, repr, a)
 
diff --git a/Lib/test/lock_tests.py b/Lib/test/lock_tests.py
index a4f52cb20ad301..024c6debcd4a54 100644
--- a/Lib/test/lock_tests.py
+++ b/Lib/test/lock_tests.py
@@ -19,54 +19,74 @@
                                      "(no _at_fork_reinit method)")
 
 
-def _wait():
-    # A crude wait/yield function not relying on synchronization primitives.
-    time.sleep(0.01)
+def wait_threads_blocked(nthread):
+    # Arbitrary sleep to wait until N threads are blocked,
+    # like waiting for a lock.
+    time.sleep(0.010 * nthread)
+
 
 class Bunch(object):
     """
     A bunch of threads.
     """
-    def __init__(self, f, n, wait_before_exit=False):
+    def __init__(self, func, nthread, wait_before_exit=False):
         """
-        Construct a bunch of `n` threads running the same function `f`.
+        Construct a bunch of `nthread` threads running the same function `func`.
         If `wait_before_exit` is True, the threads won't terminate until
         do_finish() is called.
         """
-        self.f = f
-        self.n = n
+        self.func = func
+        self.nthread = nthread
         self.started = []
         self.finished = []
+        self.exceptions = []
         self._can_exit = not wait_before_exit
-        self.wait_thread = threading_helper.wait_threads_exit()
-        self.wait_thread.__enter__()
+        self._wait_thread = None
 
-        def task():
-            tid = threading.get_ident()
-            self.started.append(tid)
-            try:
-                f()
-            finally:
-                self.finished.append(tid)
-                while not self._can_exit:
-                    _wait()
+    def task(self):
+        tid = threading.get_ident()
+        self.started.append(tid)
+        try:
+            self.func()
+        except BaseException as exc:
+            self.exceptions.append(exc)
+        finally:
+            self.finished.append(tid)
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if self._can_exit:
+                    break
+
+    def __enter__(self):
+        self._wait_thread = threading_helper.wait_threads_exit(support.SHORT_TIMEOUT)
+        self._wait_thread.__enter__()
 
         try:
-            for i in range(n):
-                start_new_thread(task, ())
+            for _ in range(self.nthread):
+                start_new_thread(self.task, ())
         except:
             self._can_exit = True
             raise
 
-    def wait_for_started(self):
-        while len(self.started) < self.n:
-            _wait()
+        for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+            if len(self.started) >= self.nthread:
+                break
+
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+            if len(self.finished) >= self.nthread:
+                break
+
+        # Wait until threads completely exit according to _thread._count()
+        self._wait_thread.__exit__(None, None, None)
 
-    def wait_for_finished(self):
-        while len(self.finished) < self.n:
-            _wait()
-        # Wait for threads exit
-        self.wait_thread.__exit__(None, None, None)
+        # Break reference cycle
+        exceptions = self.exceptions
+        self.exceptions = None
+        if exceptions:
+            raise ExceptionGroup(f"{self.func} threads raised exceptions",
+                                 exceptions)
 
     def do_finish(self):
         self._can_exit = True
@@ -94,6 +114,12 @@ class BaseLockTests(BaseTestCase):
     Tests for both recursive and non-recursive locks.
     """
 
+    def wait_phase(self, phase, expected):
+        for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+            if len(phase) >= expected:
+                break
+        self.assertEqual(len(phase), expected)
+
     def test_constructor(self):
         lock = self.locktype()
         del lock
@@ -131,41 +157,57 @@ def test_try_acquire_contended(self):
         result = []
         def f():
             result.append(lock.acquire(False))
-        Bunch(f, 1).wait_for_finished()
+        with Bunch(f, 1):
+            pass
         self.assertFalse(result[0])
         lock.release()
 
     def test_acquire_contended(self):
         lock = self.locktype()
         lock.acquire()
-        N = 5
         def f():
             lock.acquire()
             lock.release()
 
-        b = Bunch(f, N)
-        b.wait_for_started()
-        _wait()
-        self.assertEqual(len(b.finished), 0)
-        lock.release()
-        b.wait_for_finished()
-        self.assertEqual(len(b.finished), N)
+        N = 5
+        with Bunch(f, N) as bunch:
+            # Threads block on lock.acquire()
+            wait_threads_blocked(N)
+            self.assertEqual(len(bunch.finished), 0)
+
+            # Threads unblocked
+            lock.release()
+
+        self.assertEqual(len(bunch.finished), N)
 
     def test_with(self):
         lock = self.locktype()
         def f():
             lock.acquire()
             lock.release()
-        def _with(err=None):
+
+        def with_lock(err=None):
             with lock:
                 if err is not None:
                     raise err
-        _with()
-        # Check the lock is unacquired
-        Bunch(f, 1).wait_for_finished()
-        self.assertRaises(TypeError, _with, TypeError)
-        # Check the lock is unacquired
-        Bunch(f, 1).wait_for_finished()
+
+        # Acquire the lock, do nothing, with releases the lock
+        with lock:
+            pass
+
+        # Check that the lock is unacquired
+        with Bunch(f, 1):
+            pass
+
+        # Acquire the lock, raise an exception, with releases the lock
+        with self.assertRaises(TypeError):
+            with lock:
+                raise TypeError
+
+        # Check that the lock is unacquired even if after an exception
+        # was raised in the previous "with lock:" block
+        with Bunch(f, 1):
+            pass
 
     def test_thread_leak(self):
         # The lock shouldn't leak a Thread instance when used from a foreign
@@ -174,17 +216,11 @@ def test_thread_leak(self):
         def f():
             lock.acquire()
             lock.release()
-        n = len(threading.enumerate())
+
         # We run many threads in the hope that existing threads ids won't
         # be recycled.
-        Bunch(f, 15).wait_for_finished()
-        if len(threading.enumerate()) != n:
-            # There is a small window during which a Thread instance's
-            # target function has finished running, but the Thread is still
-            # alive and registered.  Avoid spurious failures by waiting a
-            # bit more (seen on a buildbot).
-            time.sleep(0.4)
-            self.assertEqual(n, len(threading.enumerate()))
+        with Bunch(f, 15):
+            pass
 
     def test_timeout(self):
         lock = self.locktype()
@@ -208,7 +244,8 @@ def f():
             results.append(lock.acquire(timeout=0.5))
             t2 = time.monotonic()
             results.append(t2 - t1)
-        Bunch(f, 1).wait_for_finished()
+        with Bunch(f, 1):
+            pass
         self.assertFalse(results[0])
         self.assertTimeout(results[1], 0.5)
 
@@ -242,15 +279,13 @@ def f():
             phase.append(None)
 
         with threading_helper.wait_threads_exit():
+            # Thread blocked on lock.acquire()
             start_new_thread(f, ())
-            while len(phase) == 0:
-                _wait()
-            _wait()
-            self.assertEqual(len(phase), 1)
+            self.wait_phase(phase, 1)
+
+            # Thread unblocked
             lock.release()
-            while len(phase) == 1:
-                _wait()
-            self.assertEqual(len(phase), 2)
+            self.wait_phase(phase, 2)
 
     def test_different_thread(self):
         # Lock can be released from a different thread.
@@ -258,8 +293,8 @@ def test_different_thread(self):
         lock.acquire()
         def f():
             lock.release()
-        b = Bunch(f, 1)
-        b.wait_for_finished()
+        with Bunch(f, 1):
+            pass
         lock.acquire()
         lock.release()
 
@@ -330,17 +365,52 @@ def test_release_save_unacquired(self):
         lock.release()
         self.assertRaises(RuntimeError, lock._release_save)
 
+    def test_recursion_count(self):
+        lock = self.locktype()
+        self.assertEqual(0, lock._recursion_count())
+        lock.acquire()
+        self.assertEqual(1, lock._recursion_count())
+        lock.acquire()
+        lock.acquire()
+        self.assertEqual(3, lock._recursion_count())
+        lock.release()
+        self.assertEqual(2, lock._recursion_count())
+        lock.release()
+        lock.release()
+        self.assertEqual(0, lock._recursion_count())
+
+        phase = []
+
+        def f():
+            lock.acquire()
+            phase.append(None)
+
+            self.wait_phase(phase, 2)
+            lock.release()
+            phase.append(None)
+
+        with threading_helper.wait_threads_exit():
+            # Thread blocked on lock.acquire()
+            start_new_thread(f, ())
+            self.wait_phase(phase, 1)
+            self.assertEqual(0, lock._recursion_count())
+
+            # Thread unblocked
+            phase.append(None)
+            self.wait_phase(phase, 3)
+            self.assertEqual(0, lock._recursion_count())
+
     def test_different_thread(self):
         # Cannot release from a different thread
         lock = self.locktype()
         def f():
             lock.acquire()
-        b = Bunch(f, 1, True)
-        try:
-            self.assertRaises(RuntimeError, lock.release)
-        finally:
-            b.do_finish()
-        b.wait_for_finished()
+
+        with Bunch(f, 1, True) as bunch:
+            try:
+                self.assertRaises(RuntimeError, lock.release)
+            finally:
+                bunch.do_finish()
 
     def test__is_owned(self):
         lock = self.locktype()
@@ -352,7 +422,8 @@ def test__is_owned(self):
         result = []
         def f():
             result.append(lock._is_owned())
-        Bunch(f, 1).wait_for_finished()
+        with Bunch(f, 1):
+            pass
         self.assertFalse(result[0])
         lock.release()
         self.assertTrue(lock._is_owned())
@@ -385,12 +456,15 @@ def _check_notify(self, evt):
         def f():
             results1.append(evt.wait())
             results2.append(evt.wait())
-        b = Bunch(f, N)
-        b.wait_for_started()
-        _wait()
-        self.assertEqual(len(results1), 0)
-        evt.set()
-        b.wait_for_finished()
+
+        with Bunch(f, N):
+            # Threads blocked on first evt.wait()
+            wait_threads_blocked(N)
+            self.assertEqual(len(results1), 0)
+
+            # Threads unblocked
+            evt.set()
+
         self.assertEqual(results1, [True] * N)
         self.assertEqual(results2, [True] * N)
 
@@ -413,35 +487,43 @@ def f():
             r = evt.wait(0.5)
             t2 = time.monotonic()
             results2.append((r, t2 - t1))
-        Bunch(f, N).wait_for_finished()
+
+        with Bunch(f, N):
+            pass
+
         self.assertEqual(results1, [False] * N)
         for r, dt in results2:
             self.assertFalse(r)
             self.assertTimeout(dt, 0.5)
+
         # The event is set
         results1 = []
         results2 = []
         evt.set()
-        Bunch(f, N).wait_for_finished()
+        with Bunch(f, N):
+            pass
+
         self.assertEqual(results1, [True] * N)
         for r, dt in results2:
             self.assertTrue(r)
 
     def test_set_and_clear(self):
-        # Issue #13502: check that wait() returns true even when the event is
+        # gh-57711: check that wait() returns true even when the event is
         # cleared before the waiting thread is woken up.
-        evt = self.eventtype()
+        event = self.eventtype()
         results = []
-        timeout = 0.250
-        N = 5
         def f():
-            results.append(evt.wait(timeout * 4))
-        b = Bunch(f, N)
-        b.wait_for_started()
-        time.sleep(timeout)
-        evt.set()
-        evt.clear()
-        b.wait_for_finished()
+            results.append(event.wait(support.LONG_TIMEOUT))
+
+        N = 5
+        with Bunch(f, N):
+            # Threads blocked on event.wait()
+            wait_threads_blocked(N)
+
+            # Threads unblocked
+            event.set()
+            event.clear()
+
         self.assertEqual(results, [True] * N)
 
     @requires_fork
@@ -497,15 +579,14 @@ def _check_notify(self, cond):
         # Note that this test is sensitive to timing.  If the worker threads
         # don't execute in a timely fashion, the main thread may think they
         # are further along then they are.  The main thread therefore issues
-        # _wait() statements to try to make sure that it doesn't race ahead
-        # of the workers.
+        # wait_threads_blocked() statements to try to make sure that it doesn't
+        # race ahead of the workers.
         # Secondly, this test assumes that condition variables are not subject
         # to spurious wakeups.  The absence of spurious wakeups is an implementation
         # detail of Condition Variables in current CPython, but in general, not
         # a guaranteed property of condition variables as a programming
         # construct.  In particular, it is possible that this can no longer
         # be conveniently guaranteed should their implementation ever change.
-        N = 5
         ready = []
         results1 = []
         results2 = []
@@ -514,58 +595,83 @@ def f():
             cond.acquire()
             ready.append(phase_num)
             result = cond.wait()
+
             cond.release()
             results1.append((result, phase_num))
+
             cond.acquire()
             ready.append(phase_num)
+
             result = cond.wait()
             cond.release()
             results2.append((result, phase_num))
-        b = Bunch(f, N)
-        b.wait_for_started()
-        # first wait, to ensure all workers settle into cond.wait() before
-        # we continue. See issues #8799 and #30727.
-        while len(ready) < 5:
-            _wait()
-        ready.clear()
-        self.assertEqual(results1, [])
-        # Notify 3 threads at first
-        cond.acquire()
-        cond.notify(3)
-        _wait()
-        phase_num = 1
-        cond.release()
-        while len(results1) < 3:
-            _wait()
-        self.assertEqual(results1, [(True, 1)] * 3)
-        self.assertEqual(results2, [])
-        # make sure all awaken workers settle into cond.wait()
-        while len(ready) < 3:
-            _wait()
-        # Notify 5 threads: they might be in their first or second wait
-        cond.acquire()
-        cond.notify(5)
-        _wait()
-        phase_num = 2
-        cond.release()
-        while len(results1) + len(results2) < 8:
-            _wait()
-        self.assertEqual(results1, [(True, 1)] * 3 + [(True, 2)] * 2)
-        self.assertEqual(results2, [(True, 2)] * 3)
-        # make sure all workers settle into cond.wait()
-        while len(ready) < 5:
-            _wait()
-        # Notify all threads: they are all in their second wait
-        cond.acquire()
-        cond.notify_all()
-        _wait()
-        phase_num = 3
-        cond.release()
-        while len(results2) < 5:
-            _wait()
-        self.assertEqual(results1, [(True, 1)] * 3 + [(True,2)] * 2)
-        self.assertEqual(results2, [(True, 2)] * 3 + [(True, 3)] * 2)
-        b.wait_for_finished()
+
+        N = 5
+        with Bunch(f, N):
+            # first wait, to ensure all workers settle into cond.wait() before
+            # we continue. See issues #8799 and #30727.
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(ready) >= N:
+                    break
+
+            ready.clear()
+            self.assertEqual(results1, [])
+
+            # Notify 3 threads at first
+            count1 = 3
+            cond.acquire()
+            cond.notify(count1)
+            wait_threads_blocked(count1)
+
+            # Phase 1
+            phase_num = 1
+            cond.release()
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(results1) >= count1:
+                    break
+
+            self.assertEqual(results1, [(True, 1)] * count1)
+            self.assertEqual(results2, [])
+
+            # Wait until awaken workers are blocked on cond.wait()
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(ready) >= count1 :
+                    break
+
+            # Notify 5 threads: they might be in their first or second wait
+            cond.acquire()
+            cond.notify(5)
+            wait_threads_blocked(N)
+
+            # Phase 2
+            phase_num = 2
+            cond.release()
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(results1) + len(results2) >= (N + count1):
+                    break
+
+            count2 = N - count1
+            self.assertEqual(results1, [(True, 1)] * count1 + [(True, 2)] * count2)
+            self.assertEqual(results2, [(True, 2)] * count1)
+
+            # Make sure all workers settle into cond.wait()
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(ready) >= N:
+                    break
+
+            # Notify all threads: they are all in their second wait
+            cond.acquire()
+            cond.notify_all()
+            wait_threads_blocked(N)
+
+            # Phase 3
+            phase_num = 3
+            cond.release()
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(results2) >= N:
+                    break
+            self.assertEqual(results1, [(True, 1)] * count1 + [(True, 2)] * count2)
+            self.assertEqual(results2, [(True, 2)] * count1 + [(True, 3)] * count2)
 
     def test_notify(self):
         cond = self.condtype()
@@ -575,19 +681,23 @@ def test_notify(self):
 
     def test_timeout(self):
         cond = self.condtype()
+        timeout = 0.5
         results = []
-        N = 5
         def f():
             cond.acquire()
             t1 = time.monotonic()
-            result = cond.wait(0.5)
+            result = cond.wait(timeout)
             t2 = time.monotonic()
             cond.release()
             results.append((t2 - t1, result))
-        Bunch(f, N).wait_for_finished()
+
+        N = 5
+        with Bunch(f, N):
+            pass
         self.assertEqual(len(results), N)
+
         for dt, result in results:
-            self.assertTimeout(dt, 0.5)
+            self.assertTimeout(dt, timeout)
             # Note that conceptually (that"s the condition variable protocol)
             # a wait() may succeed even if no one notifies us and before any
             # timeout occurs.  Spurious wakeups can occur.
@@ -600,17 +710,16 @@ def test_waitfor(self):
         state = 0
         def f():
             with cond:
-                result = cond.wait_for(lambda : state==4)
+                result = cond.wait_for(lambda: state == 4)
                 self.assertTrue(result)
                 self.assertEqual(state, 4)
-        b = Bunch(f, 1)
-        b.wait_for_started()
-        for i in range(4):
-            time.sleep(0.01)
-            with cond:
-                state += 1
-                cond.notify()
-        b.wait_for_finished()
+
+        with Bunch(f, 1):
+            for i in range(4):
+                time.sleep(0.010)
+                with cond:
+                    state += 1
+                    cond.notify()
 
     def test_waitfor_timeout(self):
         cond = self.condtype()
@@ -624,15 +733,15 @@ def f():
                 self.assertFalse(result)
                 self.assertTimeout(dt, 0.1)
                 success.append(None)
-        b = Bunch(f, 1)
-        b.wait_for_started()
-        # Only increment 3 times, so state == 4 is never reached.
-        for i in range(3):
-            time.sleep(0.01)
-            with cond:
-                state += 1
-                cond.notify()
-        b.wait_for_finished()
+
+        with Bunch(f, 1):
+            # Only increment 3 times, so state == 4 is never reached.
+            for i in range(3):
+                time.sleep(0.010)
+                with cond:
+                    state += 1
+                    cond.notify()
+
         self.assertEqual(len(success), 1)
 
 
@@ -661,73 +770,107 @@ def test_acquire_destroy(self):
         del sem
 
     def test_acquire_contended(self):
-        sem = self.semtype(7)
+        sem_value = 7
+        sem = self.semtype(sem_value)
         sem.acquire()
-        N = 10
+
         sem_results = []
         results1 = []
         results2 = []
         phase_num = 0
-        def f():
+
+        def func():
             sem_results.append(sem.acquire())
             results1.append(phase_num)
+
             sem_results.append(sem.acquire())
             results2.append(phase_num)
-        b = Bunch(f, 10)
-        b.wait_for_started()
-        while len(results1) + len(results2) < 6:
-            _wait()
-        self.assertEqual(results1 + results2, [0] * 6)
-        phase_num = 1
-        for i in range(7):
-            sem.release()
-        while len(results1) + len(results2) < 13:
-            _wait()
-        self.assertEqual(sorted(results1 + results2), [0] * 6 + [1] * 7)
-        phase_num = 2
-        for i in range(6):
+
+        def wait_count(count):
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(results1) + len(results2) >= count:
+                    break
+
+        N = 10
+        with Bunch(func, N):
+            # Phase 0
+            count1 = sem_value - 1
+            wait_count(count1)
+            self.assertEqual(results1 + results2, [0] * count1)
+
+            # Phase 1
+            phase_num = 1
+            for i in range(sem_value):
+                sem.release()
+            count2 = sem_value
+            wait_count(count1 + count2)
+            self.assertEqual(sorted(results1 + results2),
+                             [0] * count1 + [1] * count2)
+
+            # Phase 2
+            phase_num = 2
+            count3 = (sem_value - 1)
+            for i in range(count3):
+                sem.release()
+            wait_count(count1 + count2 + count3)
+            self.assertEqual(sorted(results1 + results2),
+                             [0] * count1 + [1] * count2 + [2] * count3)
+            # The semaphore is still locked
+            self.assertFalse(sem.acquire(False))
+
+            # Final release, to let the last thread finish
+            count4 = 1
             sem.release()
-        while len(results1) + len(results2) < 19:
-            _wait()
-        self.assertEqual(sorted(results1 + results2), [0] * 6 + [1] * 7 + [2] * 6)
-        # The semaphore is still locked
-        self.assertFalse(sem.acquire(False))
-        # Final release, to let the last thread finish
-        sem.release()
-        b.wait_for_finished()
-        self.assertEqual(sem_results, [True] * (6 + 7 + 6 + 1))
+
+        self.assertEqual(sem_results,
+                         [True] * (count1 + count2 + count3 + count4))
 
     def test_multirelease(self):
-        sem = self.semtype(7)
+        sem_value = 7
+        sem = self.semtype(sem_value)
         sem.acquire()
+
         results1 = []
         results2 = []
         phase_num = 0
-        def f():
+        def func():
             sem.acquire()
             results1.append(phase_num)
+
             sem.acquire()
             results2.append(phase_num)
-        b = Bunch(f, 10)
-        b.wait_for_started()
-        while len(results1) + len(results2) < 6:
-            _wait()
-        self.assertEqual(results1 + results2, [0] * 6)
-        phase_num = 1
-        sem.release(7)
-        while len(results1) + len(results2) < 13:
-            _wait()
-        self.assertEqual(sorted(results1 + results2), [0] * 6 + [1] * 7)
-        phase_num = 2
-        sem.release(6)
-        while len(results1) + len(results2) < 19:
-            _wait()
-        self.assertEqual(sorted(results1 + results2), [0] * 6 + [1] * 7 + [2] * 6)
-        # The semaphore is still locked
-        self.assertFalse(sem.acquire(False))
-        # Final release, to let the last thread finish
-        sem.release()
-        b.wait_for_finished()
+
+        def wait_count(count):
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(results1) + len(results2) >= count:
+                    break
+
+        with Bunch(func, 10):
+            # Phase 0
+            count1 = sem_value - 1
+            wait_count(count1)
+            self.assertEqual(results1 + results2, [0] * count1)
+
+            # Phase 1
+            phase_num = 1
+            count2 = sem_value
+            sem.release(count2)
+            wait_count(count1 + count2)
+            self.assertEqual(sorted(results1 + results2),
+                             [0] * count1 + [1] * count2)
+
+            # Phase 2
+            phase_num = 2
+            count3 = sem_value - 1
+            sem.release(count3)
+            wait_count(count1 + count2 + count3)
+            self.assertEqual(sorted(results1 + results2),
+                             [0] * count1 + [1] * count2 + [2] * count3)
+            # The semaphore is still locked
+            self.assertFalse(sem.acquire(False))
+
+            # Final release, to let the last thread finish
+            sem.release()
 
     def test_try_acquire(self):
         sem = self.semtype(2)
@@ -744,7 +887,8 @@ def test_try_acquire_contended(self):
         def f():
             results.append(sem.acquire(False))
             results.append(sem.acquire(False))
-        Bunch(f, 5).wait_for_finished()
+        with Bunch(f, 5):
+            pass
         # There can be a thread switch between acquiring the semaphore and
         # appending the result, therefore results will not necessarily be
         # ordered.
@@ -770,12 +914,14 @@ def test_default_value(self):
         def f():
             sem.acquire()
             sem.release()
-        b = Bunch(f, 1)
-        b.wait_for_started()
-        _wait()
-        self.assertFalse(b.finished)
-        sem.release()
-        b.wait_for_finished()
+
+        with Bunch(f, 1) as bunch:
+            # Thread blocked on sem.acquire()
+            wait_threads_blocked(1)
+            self.assertFalse(bunch.finished)
+
+            # Thread unblocked
+            sem.release()
 
     def test_with(self):
         sem = self.semtype(2)
@@ -846,13 +992,13 @@ class BarrierTests(BaseTestCase):
 
     def setUp(self):
         self.barrier = self.barriertype(self.N, timeout=self.defaultTimeout)
+
     def tearDown(self):
         self.barrier.abort()
 
     def run_threads(self, f):
-        b = Bunch(f, self.N-1)
-        f()
-        b.wait_for_finished()
+        with Bunch(f, self.N):
+            pass
 
     def multipass(self, results, n):
         m = self.barrier.parties
@@ -943,8 +1089,9 @@ def f():
             i = self.barrier.wait()
             if i == self.N//2:
                 # Wait until the other threads are all in the barrier.
-                while self.barrier.n_waiting < self.N-1:
-                    time.sleep(0.001)
+                for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                    if self.barrier.n_waiting >= (self.N - 1):
+                        break
                 self.barrier.reset()
             else:
                 try:
@@ -1004,25 +1151,27 @@ def f():
             i = self.barrier.wait()
             if i == self.N // 2:
                 # One thread is late!
-                time.sleep(1.0)
+                time.sleep(self.defaultTimeout / 2)
             # Default timeout is 2.0, so this is shorter.
             self.assertRaises(threading.BrokenBarrierError,
-                              self.barrier.wait, 0.5)
+                              self.barrier.wait, self.defaultTimeout / 4)
         self.run_threads(f)
 
     def test_default_timeout(self):
         """
         Test the barrier's default timeout
         """
-        # create a barrier with a low default timeout
-        barrier = self.barriertype(self.N, timeout=0.3)
+        timeout = 0.100
+        barrier = self.barriertype(2, timeout=timeout)
         def f():
-            i = barrier.wait()
-            if i == self.N // 2:
-                # One thread is later than the default timeout of 0.3s.
-                time.sleep(1.0)
-            self.assertRaises(threading.BrokenBarrierError, barrier.wait)
-        self.run_threads(f)
+            self.assertRaises(threading.BrokenBarrierError,
+                              barrier.wait)
+
+        start_time = time.monotonic()
+        with Bunch(f, 1):
+            pass
+        dt = time.monotonic() - start_time
+        self.assertGreaterEqual(dt, timeout)
 
     def test_single_thread(self):
         b = self.barriertype(1)
@@ -1030,16 +1179,28 @@ def test_single_thread(self):
         b.wait()
 
     def test_repr(self):
-        b = self.barriertype(3)
-        self.assertRegex(repr(b), r"<\w+\.Barrier at .*: waiters=0/3>")
+        barrier = self.barriertype(3)
+        timeout = support.LONG_TIMEOUT
+        self.assertRegex(repr(barrier), r"<\w+\.Barrier at .*: waiters=0/3>")
         def f():
-            b.wait(3)
-        bunch = Bunch(f, 2)
-        bunch.wait_for_started()
-        time.sleep(0.2)
-        self.assertRegex(repr(b), r"<\w+\.Barrier at .*: waiters=2/3>")
-        b.wait(3)
-        bunch.wait_for_finished()
-        self.assertRegex(repr(b), r"<\w+\.Barrier at .*: waiters=0/3>")
-        b.abort()
-        self.assertRegex(repr(b), r"<\w+\.Barrier at .*: broken>")
+            barrier.wait(timeout)
+
+        N = 2
+        with Bunch(f, N):
+            # Threads blocked on barrier.wait()
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if barrier.n_waiting >= N:
+                    break
+            self.assertRegex(repr(barrier),
+                             r"<\w+\.Barrier at .*: waiters=2/3>")
+
+            # Threads unblocked
+            barrier.wait(timeout)
+
+        self.assertRegex(repr(barrier),
+                         r"<\w+\.Barrier at .*: waiters=0/3>")
+
+        # Abort the barrier
+        barrier.abort()
+        self.assertRegex(repr(barrier),
+                         r"<\w+\.Barrier at .*: broken>")
diff --git a/Lib/test/mailcap.txt b/Lib/test/mailcap.txt
deleted file mode 100644
index 08a76e659410d9..00000000000000
--- a/Lib/test/mailcap.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-# Mailcap file for test_mailcap; based on RFC 1524
-# Referred to by test_mailcap.py
-
-#
-# This is a comment.
-#
-
-application/frame; showframe %s; print="cat %s | lp"
-application/postscript; ps-to-terminal %s;\
-    needsterminal
-application/postscript; ps-to-terminal %s; \
-    compose=idraw %s
-application/x-dvi; xdvi %s
-application/x-movie; movieplayer %s; compose=moviemaker %s; \
-       description="Movie"; \
-       x11-bitmap="/usr/lib/Zmail/bitmaps/movie.xbm"
-application/*; echo "This is \"%t\" but \
-       is 50 \% Greek to me" \; cat %s; copiousoutput
-
-audio/basic; showaudio %s; compose=audiocompose %s; edit=audiocompose %s;\
-description="An audio fragment"
-audio/* ; /usr/local/bin/showaudio %t
-
-image/rgb; display %s
-#image/gif; display %s
-image/x-xwindowdump; display %s
-
-# The continuation char shouldn't \
-# make a difference in a comment.
-
-message/external-body; showexternal %s %{access-type} %{name} %{site} \
-    %{directory} %{mode} %{server}; needsterminal; composetyped = extcompose %s; \
-    description="A reference to data stored in an external location"
-
-text/richtext; shownonascii iso-8859-8 -e richtext -p %s; test=test "`echo \
-    %{charset} | tr '[A-Z]' '[a-z]'`"  = iso-8859-8; copiousoutput
-
-video/*; animate %s
-video/mpeg; mpeg_play %s
\ No newline at end of file
diff --git a/Lib/test/mapping_tests.py b/Lib/test/mapping_tests.py
index 613206a0855aea..b4cfce19a7174e 100644
--- a/Lib/test/mapping_tests.py
+++ b/Lib/test/mapping_tests.py
@@ -1,7 +1,7 @@
 # tests common to dict and UserDict
 import unittest
 import collections
-import sys
+from test.support import Py_C_RECURSION_LIMIT
 
 
 class BasicTestMappingProtocol(unittest.TestCase):
@@ -624,7 +624,7 @@ def __repr__(self):
 
     def test_repr_deep(self):
         d = self._empty_mapping()
-        for i in range(sys.getrecursionlimit() + 100):
+        for i in range(Py_C_RECURSION_LIMIT + 1):
             d0 = d
             d = self._empty_mapping()
             d[1] = d0
diff --git a/Lib/test/cmath_testcases.txt b/Lib/test/mathdata/cmath_testcases.txt
similarity index 100%
rename from Lib/test/cmath_testcases.txt
rename to Lib/test/mathdata/cmath_testcases.txt
diff --git a/Lib/test/floating_points.txt b/Lib/test/mathdata/floating_points.txt
similarity index 100%
rename from Lib/test/floating_points.txt
rename to Lib/test/mathdata/floating_points.txt
diff --git a/Lib/test/formatfloat_testcases.txt b/Lib/test/mathdata/formatfloat_testcases.txt
similarity index 100%
rename from Lib/test/formatfloat_testcases.txt
rename to Lib/test/mathdata/formatfloat_testcases.txt
diff --git a/Lib/test/ieee754.txt b/Lib/test/mathdata/ieee754.txt
similarity index 100%
rename from Lib/test/ieee754.txt
rename to Lib/test/mathdata/ieee754.txt
diff --git a/Lib/test/math_testcases.txt b/Lib/test/mathdata/math_testcases.txt
similarity index 100%
rename from Lib/test/math_testcases.txt
rename to Lib/test/mathdata/math_testcases.txt
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index 6e87370c2065ba..fd446c8145850c 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -2408,6 +2408,22 @@ def test_reduce_calls_base(self):
             y = self.loads(s)
             self.assertEqual(y._reduce_called, 1)
 
+    def test_reduce_ex_None(self):
+        c = REX_None()
+        with self.assertRaises(TypeError):
+            self.dumps(c)
+
+    def test_reduce_None(self):
+        c = R_None()
+        with self.assertRaises(TypeError):
+            self.dumps(c)
+
+    def test_pickle_setstate_None(self):
+        c = C_None_setstate()
+        p = self.dumps(c)
+        with self.assertRaises(TypeError):
+            self.loads(p)
+
     @no_tracing
     def test_bad_getattr(self):
         # Issue #3514: crash when there is an infinite loop in __getattr__
@@ -2576,6 +2592,7 @@ def check_frame_opcodes(self, pickled):
             self.assertLess(pos - frameless_start, self.FRAME_SIZE_MIN)
 
     @support.skip_if_pgo_task
+    @support.requires_resource('cpu')
     def test_framing_many_objects(self):
         obj = list(range(10**5))
         for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
@@ -3348,6 +3365,21 @@ def __setstate__(self, state):
     def __reduce__(self):
         return type(self), (), self.state
 
+class REX_None:
+    """ Setting __reduce_ex__ to None should fail """
+    __reduce_ex__ = None
+
+class R_None:
+    """ Setting __reduce__ to None should fail """
+    __reduce__ = None
+
+class C_None_setstate:
+    """  Setting __setstate__ to None should fail """
+    def __getstate__(self):
+        return 1
+
+    __setstate__ = None
+
 
 # Test classes for newobj
 
@@ -3482,6 +3514,84 @@ def __init__(self): pass
         self.assertRaises(pickle.PicklingError, BadPickler().dump, 0)
         self.assertRaises(pickle.UnpicklingError, BadUnpickler().load)
 
+    def test_unpickler_bad_file(self):
+        # bpo-38384: Crash in _pickle if the read attribute raises an error.
+        def raises_oserror(self, *args, **kwargs):
+            raise OSError
+        @property
+        def bad_property(self):
+            1/0
+
+        # File without read and readline
+        class F:
+            pass
+        self.assertRaises((AttributeError, TypeError), self.Unpickler, F())
+
+        # File without read
+        class F:
+            readline = raises_oserror
+        self.assertRaises((AttributeError, TypeError), self.Unpickler, F())
+
+        # File without readline
+        class F:
+            read = raises_oserror
+        self.assertRaises((AttributeError, TypeError), self.Unpickler, F())
+
+        # File with bad read
+        class F:
+            read = bad_property
+            readline = raises_oserror
+        self.assertRaises(ZeroDivisionError, self.Unpickler, F())
+
+        # File with bad readline
+        class F:
+            readline = bad_property
+            read = raises_oserror
+        self.assertRaises(ZeroDivisionError, self.Unpickler, F())
+
+        # File with bad readline, no read
+        class F:
+            readline = bad_property
+        self.assertRaises(ZeroDivisionError, self.Unpickler, F())
+
+        # File with bad read, no readline
+        class F:
+            read = bad_property
+        self.assertRaises((AttributeError, ZeroDivisionError), self.Unpickler, F())
+
+        # File with bad peek
+        class F:
+            peek = bad_property
+            read = raises_oserror
+            readline = raises_oserror
+        try:
+            self.Unpickler(F())
+        except ZeroDivisionError:
+            pass
+
+        # File with bad readinto
+        class F:
+            readinto = bad_property
+            read = raises_oserror
+            readline = raises_oserror
+        try:
+            self.Unpickler(F())
+        except ZeroDivisionError:
+            pass
+
+    def test_pickler_bad_file(self):
+        # File without write
+        class F:
+            pass
+        self.assertRaises(TypeError, self.Pickler, F())
+
+        # File with bad write
+        class F:
+            @property
+            def write(self):
+                1/0
+        self.assertRaises(ZeroDivisionError, self.Pickler, F())
+
     def check_dumps_loads_oob_buffers(self, dumps, loads):
         # No need to do the full gamut of tests here, just enough to
         # check that dumps() and loads() redirect their arguments
@@ -3751,6 +3861,25 @@ def test_unpickling_buffering_readline(self):
                 unpickler = self.unpickler_class(f)
                 self.assertEqual(unpickler.load(), data)
 
+    def test_pickle_invalid_reducer_override(self):
+        # gh-103035
+        obj = object()
+
+        f = io.BytesIO()
+        class MyPickler(self.pickler_class):
+            pass
+        pickler = MyPickler(f)
+        pickler.dump(obj)
+
+        pickler.clear_memo()
+        pickler.reducer_override = None
+        with self.assertRaises(TypeError):
+            pickler.dump(obj)
+
+        pickler.clear_memo()
+        pickler.reducer_override = 10
+        with self.assertRaises(TypeError):
+            pickler.dump(obj)
 
 # Tests for dispatch_table attribute
 
@@ -3913,6 +4042,15 @@ def dumps(obj, protocol=None):
 
         self._test_dispatch_table(dumps, dt)
 
+    def test_dispatch_table_None_item(self):
+        # gh-93627
+        obj = object()
+        f = io.BytesIO()
+        pickler = self.pickler_class(f)
+        pickler.dispatch_table = {type(obj): None}
+        with self.assertRaises(TypeError):
+            pickler.dump(obj)
+
     def _test_dispatch_table(self, dumps, dispatch_table):
         def custom_load_dump(obj):
             return pickle.loads(dumps(obj, 0))
diff --git a/Lib/test/pythoninfo.py b/Lib/test/pythoninfo.py
index adc211b3e2169c..49e41ca6cdaf98 100644
--- a/Lib/test/pythoninfo.py
+++ b/Lib/test/pythoninfo.py
@@ -1,18 +1,13 @@
 """
 Collect various information about Python to help debugging test failures.
 """
-from __future__ import print_function
 import errno
 import re
 import sys
 import traceback
-import unittest
 import warnings
 
 
-MS_WINDOWS = (sys.platform == 'win32')
-
-
 def normalize_text(text):
     if text is None:
         return None
@@ -112,6 +107,7 @@ def collect_sys(info_add):
 
     call_func(info_add, 'sys.androidapilevel', sys, 'getandroidapilevel')
     call_func(info_add, 'sys.windowsversion', sys, 'getwindowsversion')
+    call_func(info_add, 'sys.getrecursionlimit', sys, 'getrecursionlimit')
 
     encoding = sys.getfilesystemencoding()
     if hasattr(sys, 'getfilesystemencodeerrors'):
@@ -163,6 +159,26 @@ def collect_platform(info_add):
     if libc_ver:
         info_add('platform.libc_ver', libc_ver)
 
+    try:
+        os_release = platform.freedesktop_os_release()
+    except OSError:
+        pass
+    else:
+        for key in (
+            'ID',
+            'NAME',
+            'PRETTY_NAME'
+            'VARIANT',
+            'VARIANT_ID',
+            'VERSION',
+            'VERSION_CODENAME',
+            'VERSION_ID',
+        ):
+            if key not in os_release:
+                continue
+            info_add(f'platform.freedesktop_os_release[{key}]',
+                     os_release[key])
+
 
 def collect_locale(info_add):
     import locale
@@ -223,6 +239,7 @@ def format_attr(attr, value):
         'getresgid',
         'getresuid',
         'getuid',
+        'process_cpu_count',
         'uname',
     ):
         call_func(info_add, 'os.%s' % func, os, func)
@@ -252,6 +269,7 @@ def format_groups(groups):
         "ARCHFLAGS",
         "ARFLAGS",
         "AUDIODEV",
+        "BUILDPYTHON",
         "CC",
         "CFLAGS",
         "COLUMNS",
@@ -296,7 +314,6 @@ def format_groups(groups):
         "TEMP",
         "TERM",
         "TILE_LIBRARY",
-        "TIX_LIBRARY",
         "TMP",
         "TMPDIR",
         "TRAVIS",
@@ -305,15 +322,24 @@ def format_groups(groups):
         "VIRTUAL_ENV",
         "WAYLAND_DISPLAY",
         "WINDIR",
+        "_PYTHON_HOSTRUNNER",
         "_PYTHON_HOST_PLATFORM",
         "_PYTHON_PROJECT_BASE",
         "_PYTHON_SYSCONFIGDATA_NAME",
         "__PYVENV_LAUNCHER__",
+
+        # Sanitizer options
+        "ASAN_OPTIONS",
+        "LSAN_OPTIONS",
+        "MSAN_OPTIONS",
+        "TSAN_OPTIONS",
+        "UBSAN_OPTIONS",
     ))
     for name, value in os.environ.items():
         uname = name.upper()
         if (uname in ENV_VARS
-           # Copy PYTHON* and LC_* variables
+           # Copy PYTHON* variables like PYTHONPATH
+           # Copy LC_* variables like LC_ALL
            or uname.startswith(("PYTHON", "LC_"))
            # Visual Studio: VS140COMNTOOLS
            or (uname.startswith("VS") and uname.endswith("COMNTOOLS"))):
@@ -466,13 +492,10 @@ def collect_datetime(info_add):
 
 
 def collect_sysconfig(info_add):
-    # On Windows, sysconfig is not reliable to get macros used
-    # to build Python
-    if MS_WINDOWS:
-        return
-
     import sysconfig
 
+    info_add('sysconfig.is_python_build', sysconfig.is_python_build())
+
     for name in (
         'ABIFLAGS',
         'ANDROID_API_LEVEL',
@@ -481,6 +504,7 @@ def collect_sysconfig(info_add):
         'CFLAGS',
         'CFLAGSFORSHARED',
         'CONFIG_ARGS',
+        'HOSTRUNNER',
         'HOST_GNU_TYPE',
         'MACHDEP',
         'MULTIARCH',
@@ -493,9 +517,13 @@ def collect_sysconfig(info_add):
         'PY_STDMODULE_CFLAGS',
         'Py_DEBUG',
         'Py_ENABLE_SHARED',
+        'Py_GIL_DISABLED',
         'SHELL',
         'SOABI',
+        'abs_builddir',
+        'abs_srcdir',
         'prefix',
+        'srcdir',
     ):
         value = sysconfig.get_config_var(name)
         if name == 'ANDROID_API_LEVEL' and not value:
@@ -516,6 +544,7 @@ def collect_sysconfig(info_add):
         'WITH_DOC_STRINGS',
         'WITH_DTRACE',
         'WITH_FREELISTS',
+        'WITH_MIMALLOC',
         'WITH_PYMALLOC',
         'WITH_VALGRIND',
     ):
@@ -642,7 +671,29 @@ def collect_testcapi(info_add):
     except ImportError:
         return
 
-    call_func(info_add, 'pymem.allocator', _testcapi, 'pymem_getallocatorsname')
+    for name in (
+        'LONG_MAX',         # always 32-bit on Windows, 64-bit on 64-bit Unix
+        'PY_SSIZE_T_MAX',
+        'Py_C_RECURSION_LIMIT',
+        'SIZEOF_TIME_T',    # 32-bit or 64-bit depending on the platform
+        'SIZEOF_WCHAR_T',   # 16-bit or 32-bit depending on the platform
+    ):
+        copy_attr(info_add, f'_testcapi.{name}', _testcapi, name)
+
+
+def collect_testinternalcapi(info_add):
+    try:
+        import _testinternalcapi
+    except ImportError:
+        return
+
+    call_func(info_add, 'pymem.allocator', _testinternalcapi, 'pymem_getallocatorsname')
+
+    for name in (
+        'SIZEOF_PYGC_HEAD',
+        'SIZEOF_PYOBJECT',
+    ):
+        copy_attr(info_add, f'_testinternalcapi.{name}', _testinternalcapi, name)
 
 
 def collect_resource(info_add):
@@ -661,6 +712,7 @@ def collect_resource(info_add):
 
 
 def collect_test_socket(info_add):
+    import unittest
     try:
         from test import test_socket
     except (ImportError, unittest.SkipTest):
@@ -672,26 +724,83 @@ def collect_test_socket(info_add):
     copy_attributes(info_add, test_socket, 'test_socket.%s', attributes)
 
 
-def collect_test_support(info_add):
+def collect_support(info_add):
     try:
         from test import support
     except ImportError:
         return
 
-    attributes = ('IPV6_ENABLED',)
-    copy_attributes(info_add, support, 'test_support.%s', attributes)
+    attributes = (
+        'MS_WINDOWS',
+        'has_fork_support',
+        'has_socket_support',
+        'has_strftime_extensions',
+        'has_subprocess_support',
+        'is_android',
+        'is_emscripten',
+        'is_jython',
+        'is_wasi',
+    )
+    copy_attributes(info_add, support, 'support.%s', attributes)
 
-    call_func(info_add, 'test_support._is_gui_available', support, '_is_gui_available')
-    call_func(info_add, 'test_support.python_is_optimized', support, 'python_is_optimized')
+    call_func(info_add, 'support._is_gui_available', support, '_is_gui_available')
+    call_func(info_add, 'support.python_is_optimized', support, 'python_is_optimized')
 
-    info_add('test_support.check_sanitizer(address=True)',
+    info_add('support.check_sanitizer(address=True)',
              support.check_sanitizer(address=True))
-    info_add('test_support.check_sanitizer(memory=True)',
+    info_add('support.check_sanitizer(memory=True)',
              support.check_sanitizer(memory=True))
-    info_add('test_support.check_sanitizer(ub=True)',
+    info_add('support.check_sanitizer(ub=True)',
              support.check_sanitizer(ub=True))
 
 
+def collect_support_os_helper(info_add):
+    try:
+        from test.support import os_helper
+    except ImportError:
+        return
+
+    for name in (
+        'can_symlink',
+        'can_xattr',
+        'can_chmod',
+        'can_dac_override',
+    ):
+        func = getattr(os_helper, name)
+        info_add(f'support_os_helper.{name}', func())
+
+
+def collect_support_socket_helper(info_add):
+    try:
+        from test.support import socket_helper
+    except ImportError:
+        return
+
+    attributes = (
+        'IPV6_ENABLED',
+        'has_gethostname',
+    )
+    copy_attributes(info_add, socket_helper, 'support_socket_helper.%s', attributes)
+
+    for name in (
+        'tcp_blackhole',
+    ):
+        func = getattr(socket_helper, name)
+        info_add(f'support_socket_helper.{name}', func())
+
+
+def collect_support_threading_helper(info_add):
+    try:
+        from test.support import threading_helper
+    except ImportError:
+        return
+
+    attributes = (
+        'can_start_thread',
+    )
+    copy_attributes(info_add, threading_helper, 'support_threading_helper.%s', attributes)
+
+
 def collect_cc(info_add):
     import subprocess
     import sysconfig
@@ -846,6 +955,21 @@ def collect_fips(info_add):
         pass
 
 
+def collect_tempfile(info_add):
+    import tempfile
+
+    info_add('tempfile.gettempdir', tempfile.gettempdir())
+
+
+def collect_libregrtest_utils(info_add):
+    try:
+        from test.libregrtest import utils
+    except ImportError:
+        return
+
+    info_add('libregrtests.build_info', ' '.join(utils.get_build_info()))
+
+
 def collect_info(info):
     error = False
     info_add = info.add
@@ -879,14 +1003,20 @@ def collect_info(info):
         collect_sys,
         collect_sysconfig,
         collect_testcapi,
+        collect_testinternalcapi,
+        collect_tempfile,
         collect_time,
         collect_tkinter,
         collect_windows,
         collect_zlib,
+        collect_libregrtest_utils,
 
         # Collecting from tests should be last as they have side effects.
         collect_test_socket,
-        collect_test_support,
+        collect_support,
+        collect_support_os_helper,
+        collect_support_socket_helper,
+        collect_support_threading_helper,
     ):
         try:
             collect_func(info_add)
@@ -912,7 +1042,6 @@ def dump_info(info, file=None):
     for key, value in infos:
         value = value.replace("\n", " ")
         print("%s: %s" % (key, value))
-    print()
 
 
 def main():
@@ -921,6 +1050,7 @@ def main():
     dump_info(info)
 
     if error:
+        print()
         print("Collection failed: exit with error", file=sys.stderr)
         sys.exit(1)
 
diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 0ffb3ed454eda0..46a74fe276f553 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -8,7 +8,7 @@
 
 import os
 import sys
-from test.libregrtest import main
+from test.libregrtest.main import main
 
 
 # Alias for backward compatibility (just in case)
diff --git a/Lib/test/regrtestdata/import_from_tests/test_regrtest_a.py b/Lib/test/regrtestdata/import_from_tests/test_regrtest_a.py
new file mode 100644
index 00000000000000..9c3d0c7cf4bfaa
--- /dev/null
+++ b/Lib/test/regrtestdata/import_from_tests/test_regrtest_a.py
@@ -0,0 +1,11 @@
+import sys
+import unittest
+import test_regrtest_b.util
+
+class Test(unittest.TestCase):
+    def test(self):
+        test_regrtest_b.util  # does not fail
+        self.assertIn('test_regrtest_a', sys.modules)
+        self.assertIs(sys.modules['test_regrtest_b'], test_regrtest_b)
+        self.assertIs(sys.modules['test_regrtest_b.util'], test_regrtest_b.util)
+        self.assertNotIn('test_regrtest_c', sys.modules)
diff --git a/Lib/test/regrtestdata/import_from_tests/test_regrtest_b/__init__.py b/Lib/test/regrtestdata/import_from_tests/test_regrtest_b/__init__.py
new file mode 100644
index 00000000000000..3dfba253455ad2
--- /dev/null
+++ b/Lib/test/regrtestdata/import_from_tests/test_regrtest_b/__init__.py
@@ -0,0 +1,9 @@
+import sys
+import unittest
+
+class Test(unittest.TestCase):
+    def test(self):
+        self.assertNotIn('test_regrtest_a', sys.modules)
+        self.assertIn('test_regrtest_b', sys.modules)
+        self.assertNotIn('test_regrtest_b.util', sys.modules)
+        self.assertNotIn('test_regrtest_c', sys.modules)
diff --git a/Lib/test/test_lib2to3/data/fixers/myfixes/__init__.py b/Lib/test/regrtestdata/import_from_tests/test_regrtest_b/util.py
similarity index 100%
rename from Lib/test/test_lib2to3/data/fixers/myfixes/__init__.py
rename to Lib/test/regrtestdata/import_from_tests/test_regrtest_b/util.py
diff --git a/Lib/test/regrtestdata/import_from_tests/test_regrtest_c.py b/Lib/test/regrtestdata/import_from_tests/test_regrtest_c.py
new file mode 100644
index 00000000000000..de80769118d709
--- /dev/null
+++ b/Lib/test/regrtestdata/import_from_tests/test_regrtest_c.py
@@ -0,0 +1,11 @@
+import sys
+import unittest
+import test_regrtest_b.util
+
+class Test(unittest.TestCase):
+    def test(self):
+        test_regrtest_b.util  # does not fail
+        self.assertNotIn('test_regrtest_a', sys.modules)
+        self.assertIs(sys.modules['test_regrtest_b'], test_regrtest_b)
+        self.assertIs(sys.modules['test_regrtest_b.util'], test_regrtest_b.util)
+        self.assertIn('test_regrtest_c', sys.modules)
diff --git a/Lib/test/setup_testcppext.py b/Lib/test/setup_testcppext.py
deleted file mode 100644
index 22fe750085fd70..00000000000000
--- a/Lib/test/setup_testcppext.py
+++ /dev/null
@@ -1,43 +0,0 @@
-# gh-91321: Build a basic C++ test extension to check that the Python C API is
-# compatible with C++ and does not emit C++ compiler warnings.
-import os
-import sys
-from test import support
-
-from setuptools import setup, Extension
-
-
-MS_WINDOWS = (sys.platform == 'win32')
-
-
-SOURCE = support.findfile('_testcppext.cpp')
-if not MS_WINDOWS:
-    # C++ compiler flags for GCC and clang
-    CPPFLAGS = [
-        # gh-91321: The purpose of _testcppext extension is to check that building
-        # a C++ extension using the Python C API does not emit C++ compiler
-        # warnings
-        '-Werror',
-    ]
-else:
-    # Don't pass any compiler flag to MSVC
-    CPPFLAGS = []
-
-
-def main():
-    cppflags = list(CPPFLAGS)
-    std = os.environ["CPYTHON_TEST_CPP_STD"]
-    name = os.environ["CPYTHON_TEST_EXT_NAME"]
-
-    cppflags = [*CPPFLAGS, f'-std={std}']
-
-    cpp_ext = Extension(
-        name,
-        sources=[SOURCE],
-        language='c++',
-        extra_compile_args=cppflags)
-    setup(name='internal' + name, version='0.0', ext_modules=[cpp_ext])
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Lib/test/sgml_input.html b/Lib/test/sgml_input.html
deleted file mode 100644
index f4d2e6cc805e6a..00000000000000
--- a/Lib/test/sgml_input.html
+++ /dev/null
@@ -1,212 +0,0 @@
-<html>
- <head>
-  <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
-  <link rel="stylesheet" type="text/css" href="http://ogame182.de/epicblue/formate.css">
-  <script language="JavaScript" src="js/flotten.js"></script>
- </head>
- <body>
-    <script language=JavaScript> if (parent.frames.length == 0) { top.location.href = "http://es.ogame.org/"; } </script> <script language="JavaScript">
-function haha(z1) {
-  eval("location='"+z1.options[z1.selectedIndex].value+"'");
-}
-</script>
-<center>
-<table>
- <tr>
-  <td></td>
-  <td>
-   <center>
-   <table>
-    <tr>
-     <td><img src="http://ogame182.de/epicblue/planeten/small/s_dschjungelplanet04.jpg" width="50" height="50"></td>
-     <td>
-      <table border="1">
-       <select size="1" onchange="haha(this)">
-                                   <option value="/game/flotten1.php?session=8912ae912fec&cp=33875341&mode=Flotte&gid=&messageziel=&re=0" selected>Alien sex friend    [2:250:6]</option> 
-                                   <option value="/game/flotten1.php?session=8912ae912fec&cp=33905100&mode=Flotte&gid=&messageziel=&re=0" >1989    [2:248:14]</option> 
-                                   <option value="/game/flotten1.php?session=8912ae912fec&cp=34570808&mode=Flotte&gid=&messageziel=&re=0" >1990    [2:248:6]</option> 
-                                   <option value="/game/flotten1.php?session=8912ae912fec&cp=34570858&mode=Flotte&gid=&messageziel=&re=0" >1991    [2:254:6]</option> 
-                                   <option value="/game/flotten1.php?session=8912ae912fec&cp=34572929&mode=Flotte&gid=&messageziel=&re=0" >Colonia    [2:253:12]</option> 
-               </select>
-      </table>
-     </td>
-    </tr>
-  </table>
-  </center>
-  </td>
-  <td>
-   <table border="0" width="100%" cellspacing="0" cellpadding="0">
-    <tr>
-     <td align="center"></td>
-     <td align="center" width="85">
-      <img border="0" src="http://ogame182.de/epicblue/images/metall.gif" width="42" height="22">
-     </td>
-     <td align="center" width="85">
-      <img border="0" src="http://ogame182.de/epicblue/images/kristall.gif" width="42" height="22">
-     </td>
-     <td align="center" width="85">
-      <img border="0" src="http://ogame182.de/epicblue/images/deuterium.gif" width="42" height="22">
-     </td>
-     <td align="center" width="85">
-      <img border="0" src="http://ogame182.de/epicblue/images/energie.gif" width="42" height="22">
-     </td>
-     <td align="center"></td>
-    </tr>
-    <tr>
-     <td align="center"><i><b>&nbsp;&nbsp;</b></i></td>
-     <td align="center" width="85"><i><b><font color="#ffffff">Metal</font></b></i></td>
-     <td align="center" width="85"><i><b><font color="#ffffff">Cristal</font></b></i></td>
-     <td align="center" width="85"><i><b><font color="#ffffff">Deuterio</font></b></i></td>
-     <td align="center" width="85"><i><b><font color="#ffffff">Energía</font></b></i></td>
-     <td align="center"><i><b>&nbsp;&nbsp;</b></i></td>
-    </tr>
-    <tr>
-     <td align="center"></td>
-     <td align="center" width="85">160.636</td>
-     <td align="center" width="85">3.406</td>
-     <td align="center" width="85">39.230</td>
-     <td align="center" width="85"><font color=#ff0000>-80</font>/3.965</td>
-     <td align="center"></td>
-    </tr>
-   </table>
-  </tr>
- </table>
-  </center>
-<br />
-  <script language="JavaScript">
-  <!--
-     function link_to_gamepay() {
-    self.location = "https://www.gamepay.de/?lang=es&serverID=8&userID=129360&gameID=ogame&gui=v2&chksum=a9751afa9e37e6b1b826356bcca45675";
-  }
-//-->
-  </script>
-<center>
-  <table width="519" border="0" cellpadding="0" cellspacing="1">
-   <tr height="20">
-  <td colspan="8" class="c">Flotas (max. 9)</td>
-   </tr>
-     <tr height="20">
-    <th>Num.</th>
-    <th>Misión</th>
-    <th>Cantidad</th>
-    <th>Comienzo</th>
-    <th>Salida</th>
-    <th>Objetivo</th>
-    <th>Llegada</th>
-    <th>Orden</th>   
-   </tr>
-     <tr height="20">
-    <th>1</th>
-    <th>  
-      <a title="">Espionaje</a>
-      <a title="Flota en el planeta">(F)</a>
-    </th>
-    <th> <a title="Sonda de espionaje: 3 
-">3</a></th>
-    <th>[2:250:6]</th>
-    <th>Wed Aug 9 18:00:02</th>
-    <th>[2:242:5]</th>
-    <th>Wed Aug 9 18:01:02</th>
-    <th>
-         <form action="flotten1.php?session=8912ae912fec" method="POST">
-	<input type="hidden" name="order_return" value="25054490" />
-        <input type="submit" value="Enviar de regreso" />
-     </form>
-            </th>
-   </tr>
-   <tr height="20">
-    <th>2</th>
-    <th>  
-      <a title="">Espionaje</a>
-      <a title="Volver al planeta">(V)</a>
-    </th>
-    <th> <a title="Sonda de espionaje: 3 
-">3</a></th>
-    <th>[2:250:6]</th>
-    <th>Wed Aug 9 17:59:55</th>
-    <th>[2:242:1]</th>
-    <th>Wed Aug 9 18:01:55</th>
-    <th>
-            </th>
-   </tr>
-  </table>
-
-
-  
-<form action="flotten2.php?session=8912ae912fec" method="POST">
-  <table width="519" border="0" cellpadding="0" cellspacing="1">
-       <tr height="20">
-  <td colspan="4" class="c">Nueva misión: elegir naves</td>
-   </tr>
-   <tr height="20">
-  <th>Naves</th>
-  <th>Disponibles</th>
-<!--    <th>Gesch.</th> -->
-    <th>-</th>
-    <th>-</th>
-   </tr>
-   <tr height="20">
-    <th><a title="Velocidad: 8500">Nave pequeña de carga</a></th> 
-    <th>10<input type="hidden" name="maxship202" value="10"/></th>
-<!--    <th>8500 -->
-     <input type="hidden" name="consumption202" value="10"/>
-     <input type="hidden" name="speed202" value="8500" /></th>
-     <input type="hidden" name="capacity202" value="5000" /></th>
-     <th><a href="javascript:maxShip('ship202');" >máx</a> </th>
-     <th><input name="ship202" size="10" value="0" alt="Nave pequeña de carga 10"/></th>
-   </tr>
-   <tr height="20">
-    <th><a title="Velocidad: 12750">Nave grande de carga</a></th> 
-    <th>19<input type="hidden" name="maxship203" value="19"/></th>
-<!--    <th>12750 -->
-     <input type="hidden" name="consumption203" value="50"/>
-     <input type="hidden" name="speed203" value="12750" /></th>
-     <input type="hidden" name="capacity203" value="25000" /></th>
-     <th><a href="javascript:maxShip('ship203');" >máx</a> </th>
-     <th><input name="ship203" size="10" value="0" alt="Nave grande de carga 19"/></th>
-   </tr>
-   <tr height="20">
-    <th><a title="Velocidad: 27000">Crucero</a></th> 
-    <th>6<input type="hidden" name="maxship206" value="6"/></th>
-<!--    <th>27000 -->
-     <input type="hidden" name="consumption206" value="300"/>
-     <input type="hidden" name="speed206" value="27000" /></th>
-     <input type="hidden" name="capacity206" value="800" /></th>
-     <th><a href="javascript:maxShip('ship206');" >máx</a> </th>
-     <th><input name="ship206" size="10" value="0" alt="Crucero 6"/></th>
-   </tr>
-   <tr height="20">
-    <th><a title="Velocidad: 3400">Reciclador</a></th> 
-    <th>1<input type="hidden" name="maxship209" value="1"/></th>
-<!--    <th>3400 -->
-     <input type="hidden" name="consumption209" value="300"/>
-     <input type="hidden" name="speed209" value="3400" /></th>
-     <input type="hidden" name="capacity209" value="20000" /></th>
-     <th><a href="javascript:maxShip('ship209');" >máx</a> </th>
-     <th><input name="ship209" size="10" value="0" alt="Reciclador 1"/></th>
-   </tr>
-   <tr height="20">
-    <th><a title="Velocidad: 170000000">Sonda de espionaje</a></th> 
-    <th>139<input type="hidden" name="maxship210" value="139"/></th>
-<!--    <th>170000000 -->
-     <input type="hidden" name="consumption210" value="1"/>
-     <input type="hidden" name="speed210" value="170000000" /></th>
-     <input type="hidden" name="capacity210" value="5" /></th>
-     <th><a href="javascript:maxShip('ship210');" >máx</a> </th>
-     <th><input name="ship210" size="10" value="0" alt="Sonda de espionaje 139"/></th>
-   </tr>
-   <tr height="20">
-  <th colspan="2"><a href="javascript:noShips();" >Ninguna nave</a></th>
-  <th colspan="2"><a href="javascript:maxShips();" >Todas las naves</a></th>
-   </tr>
-    <tr height="20">
-    <th colspan="4"><input type="submit" value="Continuar" /></th>
-   </tr>
-<tr><th colspan=4>
-<iframe id='a44fb522' name='a44fb522' src='http://ads.gameforgeads.de/adframe.php?n=a44fb522&amp;what=zone:578' framespacing='0' frameborder='no' scrolling='no' width='468' height='60'></iframe>
-<br><center></center></br>
-</th></tr>
-</form>
-</table>
- </body>
-</html>
diff --git a/Lib/test/signalinterproctester.py b/Lib/test/signalinterproctester.py
index cdcd92a8baace6..073c078f45f6d7 100644
--- a/Lib/test/signalinterproctester.py
+++ b/Lib/test/signalinterproctester.py
@@ -1,3 +1,4 @@
+import gc
 import os
 import signal
 import subprocess
@@ -59,6 +60,13 @@ def test_interprocess_signal(self):
         self.assertEqual(self.got_signals, {'SIGHUP': 1, 'SIGUSR1': 0,
                                             'SIGALRM': 0})
 
+        # gh-110033: Make sure that the subprocess.Popen is deleted before
+        # the next test which raises an exception. Otherwise, the exception
+        # may be raised when Popen.__del__() is executed and so be logged
+        # as "Exception ignored in: <function Popen.__del__ at ...>".
+        child = None
+        gc.collect()
+
         with self.assertRaises(SIGUSR1Exception):
             with self.subprocess_send_signal(pid, "SIGUSR1") as child:
                 self.wait_signal(child, 'SIGUSR1')
diff --git a/Lib/test/sndhdrdata/README b/Lib/test/sndhdrdata/README
deleted file mode 100644
index b2cb664615b9c7..00000000000000
--- a/Lib/test/sndhdrdata/README
+++ /dev/null
@@ -1,5 +0,0 @@
-Sound file samples used by Lib/test/test_sndhdr.py and generated using the
-following commands:
-
-   dd if=/dev/zero of=sndhdr.raw bs=20 count=1
-   sox -s -2 -c 2 -r 44100 sndhdr.raw sndhdr.<format>
diff --git a/Lib/test/sndhdrdata/sndhdr.8svx b/Lib/test/sndhdrdata/sndhdr.8svx
deleted file mode 100644
index 8cd6cde5e09f35..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.8svx and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.aifc b/Lib/test/sndhdrdata/sndhdr.aifc
deleted file mode 100644
index 8aae4e730bdafe..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.aifc and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.aiff b/Lib/test/sndhdrdata/sndhdr.aiff
deleted file mode 100644
index 8c279a762f1c70..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.aiff and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.au b/Lib/test/sndhdrdata/sndhdr.au
deleted file mode 100644
index 67c9e8fdd995ef..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.au and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.hcom b/Lib/test/sndhdrdata/sndhdr.hcom
deleted file mode 100644
index debb02d9dd935f..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.hcom and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.sndt b/Lib/test/sndhdrdata/sndhdr.sndt
deleted file mode 100644
index e1ca9cb185d157..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.sndt and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.voc b/Lib/test/sndhdrdata/sndhdr.voc
deleted file mode 100644
index 53a91fd1eae30b..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.voc and /dev/null differ
diff --git a/Lib/test/sndhdrdata/sndhdr.wav b/Lib/test/sndhdrdata/sndhdr.wav
deleted file mode 100644
index 0dca36739cde30..00000000000000
Binary files a/Lib/test/sndhdrdata/sndhdr.wav and /dev/null differ
diff --git a/Lib/test/ssl_servers.py b/Lib/test/ssl_servers.py
index a4bd7455d47e76..15b071e04dda1f 100644
--- a/Lib/test/ssl_servers.py
+++ b/Lib/test/ssl_servers.py
@@ -14,7 +14,7 @@
 here = os.path.dirname(__file__)
 
 HOST = socket_helper.HOST
-CERTFILE = os.path.join(here, 'keycert.pem')
+CERTFILE = os.path.join(here, 'certdata', 'keycert.pem')
 
 # This one's based on HTTPServer, which is based on socketserver
 
diff --git a/Lib/test/ssltests.py b/Lib/test/ssltests.py
index 5073ae12204b16..ee03aed5cca532 100644
--- a/Lib/test/ssltests.py
+++ b/Lib/test/ssltests.py
@@ -7,7 +7,7 @@
 
 TESTS = [
     'test_asyncio', 'test_ensurepip.py', 'test_ftplib', 'test_hashlib',
-    'test_hmac', 'test_httplib', 'test_imaplib', 'test_nntplib',
+    'test_hmac', 'test_httplib', 'test_imaplib',
     'test_poplib', 'test_ssl', 'test_smtplib', 'test_smtpnet',
     'test_urllib2_localnet', 'test_venv', 'test_xmlrpc'
 ]
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 709cac7a27a449..cecf309dca9194 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -8,18 +8,12 @@
 from collections import UserList
 import random
 
+
 class Sequence:
     def __init__(self, seq='wxyz'): self.seq = seq
     def __len__(self): return len(self.seq)
     def __getitem__(self, i): return self.seq[i]
 
-class BadSeq1(Sequence):
-    def __init__(self): self.seq = [7, 'hello', 123]
-    def __str__(self): return '{0} {1} {2}'.format(*self.seq)
-
-class BadSeq2(Sequence):
-    def __init__(self): self.seq = ['a', 'b', 'c']
-    def __len__(self): return 8
 
 class BaseTest:
     # These tests are for buffers of values (bytes) and not
@@ -27,7 +21,7 @@ class BaseTest:
     # and various string implementations
 
     # The type to be tested
-    # Change in subclasses to change the behaviour of fixtesttype()
+    # Change in subclasses to change the behaviour of fixtype()
     type2test = None
 
     # Whether the "contained items" of the container are integers in
@@ -36,7 +30,7 @@ class BaseTest:
     contains_bytes = False
 
     # All tests pass their arguments to the testing methods
-    # as str objects. fixtesttype() can be used to propagate
+    # as str objects. fixtype() can be used to propagate
     # these arguments to the appropriate type
     def fixtype(self, obj):
         if isinstance(obj, str):
@@ -160,6 +154,12 @@ def test_count(self):
                     self.assertEqual(rem, 0, '%s != 0 for %s' % (rem, i))
                     self.assertEqual(r1, r2, '%s != %s for %s' % (r1, r2, i))
 
+    def test_count_keyword(self):
+        self.assertEqual('aa'.replace('a', 'b', 0), 'aa'.replace('a', 'b', count=0))
+        self.assertEqual('aa'.replace('a', 'b', 1), 'aa'.replace('a', 'b', count=1))
+        self.assertEqual('aa'.replace('a', 'b', 2), 'aa'.replace('a', 'b', count=2))
+        self.assertEqual('aa'.replace('a', 'b', 3), 'aa'.replace('a', 'b', count=3))
+
     def test_find(self):
         self.checkequal(0, 'abcdefghiabc', 'find', 'abc')
         self.checkequal(9, 'abcdefghiabc', 'find', 'abc', 1)
@@ -327,11 +327,12 @@ def reference_find(p, s):
             for i in range(len(s)):
                 if s.startswith(p, i):
                     return i
+            if p == '' and s == '':
+                return 0
             return -1
 
-        rr = random.randrange
-        choices = random.choices
-        for _ in range(1000):
+        def check_pattern(rr):
+            choices = random.choices
             p0 = ''.join(choices('abcde', k=rr(10))) * rr(10, 20)
             p = p0[:len(p0) - rr(10)] # pop off some characters
             left = ''.join(choices('abcdef', k=rr(2000)))
@@ -341,6 +342,13 @@ def reference_find(p, s):
                 self.checkequal(reference_find(p, text),
                                 text, 'find', p)
 
+        rr = random.randrange
+        for _ in range(1000):
+            check_pattern(rr)
+
+        # Test that empty string always work:
+        check_pattern(lambda *args: 0)
+
     def test_find_many_lengths(self):
         haystack_repeats = [a * 10**e for e in range(6) for a in (1,2,5)]
         haystacks = [(n, self.fixtype("abcab"*n + "da")) for n in haystack_repeats]
@@ -1096,7 +1104,7 @@ def test_splitlines(self):
         self.checkraises(TypeError, 'abc', 'splitlines', 42, 42)
 
 
-class CommonTest(BaseTest):
+class StringLikeTest(BaseTest):
     # This testcase contains tests that can be used in all
     # stringlike classes. Currently this is str and UserString.
 
@@ -1127,11 +1135,6 @@ def test_capitalize_nonascii(self):
         self.checkequal('\u019b\u1d00\u1d86\u0221\u1fb7',
                         '\u019b\u1d00\u1d86\u0221\u1fb7', 'capitalize')
 
-
-class MixinStrUnicodeUserStringTest:
-    # additional tests that only work for
-    # stringlike objects, i.e. str, UserString
-
     def test_startswith(self):
         self.checkequal(True, 'hello', 'startswith', 'he')
         self.checkequal(True, 'hello', 'startswith', 'hello')
@@ -1313,8 +1316,11 @@ def test_join(self):
             self.checkequal(((('a' * i) + '-') * i)[:-1], '-', 'join',
                  ('a' * i,) * i)
 
-        #self.checkequal(str(BadSeq1()), ' ', 'join', BadSeq1())
-        self.checkequal('a b c', ' ', 'join', BadSeq2())
+        class LiesAboutLengthSeq(Sequence):
+            def __init__(self): self.seq = ['a', 'b', 'c']
+            def __len__(self): return 8
+
+        self.checkequal('a b c', ' ', 'join', LiesAboutLengthSeq())
 
         self.checkraises(TypeError, ' ', 'join')
         self.checkraises(TypeError, ' ', 'join', None)
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index d063837baee2de..c22d73c231b46e 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -4,26 +4,20 @@
     raise ImportError('support must be imported from the test package')
 
 import contextlib
+import dataclasses
 import functools
-import getpass
-import opcode
+import _opcode
 import os
 import re
 import stat
 import sys
 import sysconfig
+import textwrap
 import time
 import types
 import unittest
 import warnings
 
-from .testresult import get_test_runner
-
-
-try:
-    from _testcapi import unicode_legacy_string
-except ImportError:
-    unicode_legacy_string = None
 
 __all__ = [
     # globals
@@ -37,7 +31,6 @@
     "is_resource_enabled", "requires", "requires_freebsd_version",
     "requires_linux_version", "requires_mac_ver",
     "check_syntax_error",
-    "run_unittest", "run_doctest",
     "requires_gzip", "requires_bz2", "requires_lzma",
     "bigmemtest", "bigaddrspacetest", "cpython_only", "get_attribute",
     "requires_IEEE_754", "requires_zlib",
@@ -49,7 +42,7 @@
     "check_disallow_instantiation", "check_sanitizer", "skip_if_sanitizer",
     "requires_limited_api", "requires_specialization",
     # sys
-    "is_jython", "is_android", "is_emscripten", "is_wasi",
+    "MS_WINDOWS", "is_jython", "is_android", "is_emscripten", "is_wasi",
     "check_impl_detail", "unix_shell", "setswitchinterval",
     # os
     "get_pagesize",
@@ -63,7 +56,9 @@
     "run_with_tz", "PGO", "missing_compiler_executable",
     "ALWAYS_EQ", "NEVER_EQ", "LARGEST", "SMALLEST",
     "LOOPBACK_TIMEOUT", "INTERNET_TIMEOUT", "SHORT_TIMEOUT", "LONG_TIMEOUT",
-    "Py_DEBUG", "EXCEEDS_RECURSION_LIMIT",
+    "Py_DEBUG", "EXCEEDS_RECURSION_LIMIT", "Py_C_RECURSION_LIMIT",
+    "skip_on_s390x",
+    "without_optimizer",
     ]
 
 
@@ -76,13 +71,7 @@
 #
 # The timeout should be long enough for connect(), recv() and send() methods
 # of socket.socket.
-LOOPBACK_TIMEOUT = 5.0
-if sys.platform == 'win32' and ' 32 bit (ARM)' in sys.version:
-    # bpo-37553: test_socket.SendfileUsingSendTest is taking longer than 2
-    # seconds on Windows ARM32 buildbot
-    LOOPBACK_TIMEOUT = 10
-elif sys.platform == 'vxworks':
-    LOOPBACK_TIMEOUT = 10
+LOOPBACK_TIMEOUT = 10.0
 
 # Timeout in seconds for network requests going to the internet. The timeout is
 # short enough to prevent a test to wait for too long if the internet request
@@ -121,17 +110,20 @@ class Error(Exception):
 
 class TestFailed(Error):
     """Test failed."""
+    def __init__(self, msg, *args, stats=None):
+        self.msg = msg
+        self.stats = stats
+        super().__init__(msg, *args)
+
+    def __str__(self):
+        return self.msg
 
 class TestFailedWithDetails(TestFailed):
     """Test failed."""
-    def __init__(self, msg, errors, failures):
-        self.msg = msg
+    def __init__(self, msg, errors, failures, stats):
         self.errors = errors
         self.failures = failures
-        super().__init__(msg, errors, failures)
-
-    def __str__(self):
-        return self.msg
+        super().__init__(msg, errors, failures, stats=stats)
 
 class TestDidNotRun(Error):
     """Test did not run any subtests."""
@@ -390,6 +382,7 @@ def wrapper(*args, **kw):
 
 def skip_if_buildbot(reason=None):
     """Decorator raising SkipTest if running on a buildbot."""
+    import getpass
     if not reason:
         reason = 'not suitable for buildbots'
     try:
@@ -405,19 +398,19 @@ def check_sanitizer(*, address=False, memory=False, ub=False):
         raise ValueError('At least one of address, memory, or ub must be True')
 
 
-    _cflags = sysconfig.get_config_var('CFLAGS') or ''
-    _config_args = sysconfig.get_config_var('CONFIG_ARGS') or ''
+    cflags = sysconfig.get_config_var('CFLAGS') or ''
+    config_args = sysconfig.get_config_var('CONFIG_ARGS') or ''
     memory_sanitizer = (
-        '-fsanitize=memory' in _cflags or
-        '--with-memory-sanitizer' in _config_args
+        '-fsanitize=memory' in cflags or
+        '--with-memory-sanitizer' in config_args
     )
     address_sanitizer = (
-        '-fsanitize=address' in _cflags or
-        '--with-memory-sanitizer' in _config_args
+        '-fsanitize=address' in cflags or
+        '--with-address-sanitizer' in config_args
     )
     ub_sanitizer = (
-        '-fsanitize=undefined' in _cflags or
-        '--with-undefined-behavior-sanitizer' in _config_args
+        '-fsanitize=undefined' in cflags or
+        '--with-undefined-behavior-sanitizer' in config_args
     )
     return (
         (memory and memory_sanitizer) or
@@ -433,6 +426,18 @@ def skip_if_sanitizer(reason=None, *, address=False, memory=False, ub=False):
     skip = check_sanitizer(address=address, memory=memory, ub=ub)
     return unittest.skipIf(skip, reason)
 
+# gh-89363: True if fork() can hang if Python is built with Address Sanitizer
+# (ASAN): libasan race condition, dead lock in pthread_create().
+HAVE_ASAN_FORK_BUG = check_sanitizer(address=True)
+
+
+def set_sanitizer_env_var(env, option):
+    for name in ('ASAN_OPTIONS', 'MSAN_OPTIONS', 'UBSAN_OPTIONS'):
+        if name in env:
+            env[name] += f':{option}'
+        else:
+            env[name] = option
+
 
 def system_must_validate_cert(f):
     """Skip the test on TLS certificate validation failures."""
@@ -505,8 +510,7 @@ def has_no_debug_ranges():
 def requires_debug_ranges(reason='requires co_positions / debug_ranges'):
     return unittest.skipIf(has_no_debug_ranges(), reason)
 
-requires_legacy_unicode_capi = unittest.skipUnless(unicode_legacy_string,
-                        'requires legacy Unicode C API')
+MS_WINDOWS = (sys.platform == 'win32')
 
 # Is not actually used in tests, but is kept for compatibility.
 is_jython = sys.platform.startswith('java')
@@ -619,6 +623,14 @@ def sortdict(dict):
     withcommas = ", ".join(reprpairs)
     return "{%s}" % withcommas
 
+
+def run_code(code: str) -> dict[str, object]:
+    """Run a piece of code after dedenting it, and return its global namespace."""
+    ns = {}
+    exec(textwrap.dedent(code), ns)
+    return ns
+
+
 def check_syntax_error(testcase, statement, errtext='', *, lineno=None, offset=None):
     with testcase.assertRaisesRegex(SyntaxError, errtext) as cm:
         compile(statement, '<test string>', 'exec')
@@ -766,11 +778,30 @@ def python_is_optimized():
     return final_opt not in ('', '-O0', '-Og')
 
 
-_header = 'nP'
+def check_cflags_pgo():
+    # Check if Python was built with ./configure --enable-optimizations:
+    # with Profile Guided Optimization (PGO).
+    cflags_nodist = sysconfig.get_config_var('PY_CFLAGS_NODIST') or ''
+    pgo_options = [
+        # GCC
+        '-fprofile-use',
+        # clang: -fprofile-instr-use=code.profclangd
+        '-fprofile-instr-use',
+        # ICC
+        "-prof-use",
+    ]
+    PGO_PROF_USE_FLAG = sysconfig.get_config_var('PGO_PROF_USE_FLAG')
+    if PGO_PROF_USE_FLAG:
+        pgo_options.append(PGO_PROF_USE_FLAG)
+    return any(option in cflags_nodist for option in pgo_options)
+
+
+Py_GIL_DISABLED = bool(sysconfig.get_config_var('Py_GIL_DISABLED'))
+if Py_GIL_DISABLED:
+    _header = 'PHBBInP'
+else:
+    _header = 'nP'
 _align = '0n'
-if hasattr(sys, "getobjects"):
-    _header = '2P' + _header
-    _align = '0P'
 _vheader = _header + 'n'
 
 def calcobjsize(fmt):
@@ -875,27 +906,31 @@ def inner(*args, **kwds):
 
 MAX_Py_ssize_t = sys.maxsize
 
-def set_memlimit(limit):
-    global max_memuse
-    global real_max_memuse
+def _parse_memlimit(limit: str) -> int:
     sizes = {
         'k': 1024,
         'm': _1M,
         'g': _1G,
         't': 1024*_1G,
     }
-    m = re.match(r'(\d+(\.\d+)?) (K|M|G|T)b?$', limit,
+    m = re.match(r'(\d+(?:\.\d+)?) (K|M|G|T)b?$', limit,
                  re.IGNORECASE | re.VERBOSE)
     if m is None:
-        raise ValueError('Invalid memory limit %r' % (limit,))
-    memlimit = int(float(m.group(1)) * sizes[m.group(3).lower()])
-    real_max_memuse = memlimit
-    if memlimit > MAX_Py_ssize_t:
-        memlimit = MAX_Py_ssize_t
+        raise ValueError(f'Invalid memory limit: {limit!r}')
+    return int(float(m.group(1)) * sizes[m.group(2).lower()])
+
+def set_memlimit(limit: str) -> None:
+    global max_memuse
+    global real_max_memuse
+    memlimit = _parse_memlimit(limit)
     if memlimit < _2G - 1:
-        raise ValueError('Memory limit %r too low to be useful' % (limit,))
+        raise ValueError('Memory limit {limit!r} too low to be useful')
+
+    real_max_memuse = memlimit
+    memlimit = min(memlimit, MAX_Py_ssize_t)
     max_memuse = memlimit
 
+
 class _MemoryWatchdog:
     """An object which periodically watches the process' memory consumption
     and prints it out.
@@ -1048,18 +1083,30 @@ def check_impl_detail(**guards):
 
 def no_tracing(func):
     """Decorator to temporarily turn off tracing for the duration of a test."""
-    if not hasattr(sys, 'gettrace'):
-        return func
-    else:
+    trace_wrapper = func
+    if hasattr(sys, 'gettrace'):
         @functools.wraps(func)
-        def wrapper(*args, **kwargs):
+        def trace_wrapper(*args, **kwargs):
             original_trace = sys.gettrace()
             try:
                 sys.settrace(None)
                 return func(*args, **kwargs)
             finally:
                 sys.settrace(original_trace)
-        return wrapper
+
+    coverage_wrapper = trace_wrapper
+    if 'test.cov' in sys.modules:  # -Xpresite=test.cov used
+        cov = sys.monitoring.COVERAGE_ID
+        @functools.wraps(func)
+        def coverage_wrapper(*args, **kwargs):
+            original_events = sys.monitoring.get_events(cov)
+            try:
+                sys.monitoring.set_events(cov, 0)
+                return trace_wrapper(*args, **kwargs)
+            finally:
+                sys.monitoring.set_events(cov, original_events)
+
+    return coverage_wrapper
 
 
 def refcount_test(test):
@@ -1078,158 +1125,12 @@ def requires_limited_api(test):
         import _testcapi
     except ImportError:
         return unittest.skip('needs _testcapi module')(test)
-    return unittest.skipUnless(
-        _testcapi.LIMITED_API_AVAILABLE, 'needs Limited API support')(test)
+    return test
 
 def requires_specialization(test):
     return unittest.skipUnless(
-        opcode.ENABLE_SPECIALIZATION, "requires specialization")(test)
-
-def _filter_suite(suite, pred):
-    """Recursively filter test cases in a suite based on a predicate."""
-    newtests = []
-    for test in suite._tests:
-        if isinstance(test, unittest.TestSuite):
-            _filter_suite(test, pred)
-            newtests.append(test)
-        else:
-            if pred(test):
-                newtests.append(test)
-    suite._tests = newtests
-
-def _run_suite(suite):
-    """Run tests from a unittest.TestSuite-derived class."""
-    runner = get_test_runner(sys.stdout,
-                             verbosity=verbose,
-                             capture_output=(junit_xml_list is not None))
-
-    result = runner.run(suite)
-
-    if junit_xml_list is not None:
-        junit_xml_list.append(result.get_xml_element())
-
-    if not result.testsRun and not result.skipped and not result.errors:
-        raise TestDidNotRun
-    if not result.wasSuccessful():
-        if len(result.errors) == 1 and not result.failures:
-            err = result.errors[0][1]
-        elif len(result.failures) == 1 and not result.errors:
-            err = result.failures[0][1]
-        else:
-            err = "multiple errors occurred"
-            if not verbose: err += "; run in verbose mode for details"
-        errors = [(str(tc), exc_str) for tc, exc_str in result.errors]
-        failures = [(str(tc), exc_str) for tc, exc_str in result.failures]
-        raise TestFailedWithDetails(err, errors, failures)
-
-
-# By default, don't filter tests
-_match_test_func = None
-
-_accept_test_patterns = None
-_ignore_test_patterns = None
-
-
-def match_test(test):
-    # Function used by support.run_unittest() and regrtest --list-cases
-    if _match_test_func is None:
-        return True
-    else:
-        return _match_test_func(test.id())
-
-
-def _is_full_match_test(pattern):
-    # If a pattern contains at least one dot, it's considered
-    # as a full test identifier.
-    # Example: 'test.test_os.FileTests.test_access'.
-    #
-    # ignore patterns which contain fnmatch patterns: '*', '?', '[...]'
-    # or '[!...]'. For example, ignore 'test_access*'.
-    return ('.' in pattern) and (not re.search(r'[?*\[\]]', pattern))
-
-
-def set_match_tests(accept_patterns=None, ignore_patterns=None):
-    global _match_test_func, _accept_test_patterns, _ignore_test_patterns
-
-
-    if accept_patterns is None:
-        accept_patterns = ()
-    if ignore_patterns is None:
-        ignore_patterns = ()
-
-    accept_func = ignore_func = None
-
-    if accept_patterns != _accept_test_patterns:
-        accept_patterns, accept_func = _compile_match_function(accept_patterns)
-    if ignore_patterns != _ignore_test_patterns:
-        ignore_patterns, ignore_func = _compile_match_function(ignore_patterns)
-
-    # Create a copy since patterns can be mutable and so modified later
-    _accept_test_patterns = tuple(accept_patterns)
-    _ignore_test_patterns = tuple(ignore_patterns)
-
-    if accept_func is not None or ignore_func is not None:
-        def match_function(test_id):
-            accept = True
-            ignore = False
-            if accept_func:
-                accept = accept_func(test_id)
-            if ignore_func:
-                ignore = ignore_func(test_id)
-            return accept and not ignore
-
-        _match_test_func = match_function
-
-
-def _compile_match_function(patterns):
-    if not patterns:
-        func = None
-        # set_match_tests(None) behaves as set_match_tests(())
-        patterns = ()
-    elif all(map(_is_full_match_test, patterns)):
-        # Simple case: all patterns are full test identifier.
-        # The test.bisect_cmd utility only uses such full test identifiers.
-        func = set(patterns).__contains__
-    else:
-        import fnmatch
-        regex = '|'.join(map(fnmatch.translate, patterns))
-        # The search *is* case sensitive on purpose:
-        # don't use flags=re.IGNORECASE
-        regex_match = re.compile(regex).match
-
-        def match_test_regex(test_id):
-            if regex_match(test_id):
-                # The regex matches the whole identifier, for example
-                # 'test.test_os.FileTests.test_access'.
-                return True
-            else:
-                # Try to match parts of the test identifier.
-                # For example, split 'test.test_os.FileTests.test_access'
-                # into: 'test', 'test_os', 'FileTests' and 'test_access'.
-                return any(map(regex_match, test_id.split(".")))
-
-        func = match_test_regex
-
-    return patterns, func
-
+        _opcode.ENABLE_SPECIALIZATION, "requires specialization")(test)
 
-def run_unittest(*classes):
-    """Run tests from unittest.TestCase-derived classes."""
-    valid_types = (unittest.TestSuite, unittest.TestCase)
-    loader = unittest.TestLoader()
-    suite = unittest.TestSuite()
-    for cls in classes:
-        if isinstance(cls, str):
-            if cls in sys.modules:
-                suite.addTest(loader.loadTestsFromModule(sys.modules[cls]))
-            else:
-                raise ValueError("str arguments must be keys in sys.modules")
-        elif isinstance(cls, valid_types):
-            suite.addTest(cls)
-        else:
-            suite.addTest(loader.loadTestsFromTestCase(cls))
-    _filter_suite(suite, match_test)
-    _run_suite(suite)
 
 #=======================================================================
 # Check for the presence of docstrings.
@@ -1251,33 +1152,6 @@ def _check_docstrings():
                                           "test requires docstrings")
 
 
-#=======================================================================
-# doctest driver.
-
-def run_doctest(module, verbosity=None, optionflags=0):
-    """Run doctest on the given module.  Return (#failures, #tests).
-
-    If optional argument verbosity is not specified (or is None), pass
-    support's belief about verbosity on to doctest.  Else doctest's
-    usual behavior is used (it searches sys.argv for -v).
-    """
-
-    import doctest
-
-    if verbosity is None:
-        verbosity = verbose
-    else:
-        verbosity = None
-
-    f, t = doctest.testmod(module, verbose=verbosity, optionflags=optionflags)
-    if f:
-        raise TestFailed("%d of %d doctests failed" % (f, t))
-    if verbose:
-        print('doctest (%s) ... %d tests with zero failures' %
-              (module.__name__, t))
-    return f, t
-
-
 #=======================================================================
 # Support for saving and restoring the imported modules.
 
@@ -1804,14 +1678,17 @@ def run_in_subinterp(code):
     return _testcapi.run_in_subinterp(code)
 
 
-def run_in_subinterp_with_config(code, **config):
+def run_in_subinterp_with_config(code, *, own_gil=None, **config):
     """
     Run code in a subinterpreter. Raise unittest.SkipTest if the tracemalloc
     module is enabled.
     """
     _check_tracemalloc()
-    import _testcapi
-    return _testcapi.run_in_subinterp_with_config(code, **config)
+    import _testinternalcapi
+    if own_gil is not None:
+        assert 'gil' not in config, (own_gil, config)
+        config['gil'] = 2 if own_gil else 1
+    return _testinternalcapi.run_in_subinterp_with_config(code, **config)
 
 
 def _check_tracemalloc():
@@ -1856,15 +1733,16 @@ def missing_compiler_executable(cmd_names=[]):
     missing.
 
     """
-    # TODO (PEP 632): alternate check without using distutils
-    from distutils import ccompiler, sysconfig, spawn, errors
+    from setuptools._distutils import ccompiler, sysconfig, spawn
+    from setuptools import errors
+
     compiler = ccompiler.new_compiler()
     sysconfig.customize_compiler(compiler)
     if compiler.compiler_type == "msvc":
         # MSVC has no executables, so check whether initialization succeeds
         try:
             compiler.initialize()
-        except errors.DistutilsPlatformError:
+        except errors.PlatformError:
             return "msvc"
     for name in compiler.executables:
         if cmd_names and name not in cmd_names:
@@ -1969,6 +1847,11 @@ def with_pymalloc():
     return _testcapi.WITH_PYMALLOC
 
 
+def with_mimalloc():
+    import _testcapi
+    return _testcapi.WITH_MIMALLOC
+
+
 class _ALWAYS_EQ:
     """
     Object that is equal to anything.
@@ -2195,6 +2078,39 @@ def check_disallow_instantiation(testcase, tp, *args, **kwds):
     msg = f"cannot create '{re.escape(qualname)}' instances"
     testcase.assertRaisesRegex(TypeError, msg, tp, *args, **kwds)
 
+def get_recursion_depth():
+    """Get the recursion depth of the caller function.
+
+    In the __main__ module, at the module level, it should be 1.
+    """
+    try:
+        import _testinternalcapi
+        depth = _testinternalcapi.get_recursion_depth()
+    except (ImportError, RecursionError) as exc:
+        # sys._getframe() + frame.f_back implementation.
+        try:
+            depth = 0
+            frame = sys._getframe()
+            while frame is not None:
+                depth += 1
+                frame = frame.f_back
+        finally:
+            # Break any reference cycles.
+            frame = None
+
+    # Ignore get_recursion_depth() frame.
+    return max(depth - 1, 1)
+
+def get_recursion_available():
+    """Get the number of available frames before RecursionError.
+
+    It depends on the current recursion depth of the caller function and
+    sys.getrecursionlimit().
+    """
+    limit = sys.getrecursionlimit()
+    depth = get_recursion_depth()
+    return limit - depth
+
 @contextlib.contextmanager
 def set_recursion_limit(limit):
     """Temporarily change the recursion limit."""
@@ -2205,14 +2121,26 @@ def set_recursion_limit(limit):
     finally:
         sys.setrecursionlimit(original_limit)
 
-def infinite_recursion(max_depth=75):
+def infinite_recursion(max_depth=None):
     """Set a lower limit for tests that interact with infinite recursions
     (e.g test_ast.ASTHelpers_Test.test_recursion_direct) since on some
     debug windows builds, due to not enough functions being inlined the
     stack size might not handle the default recursion limit (1000). See
     bpo-11105 for details."""
-    return set_recursion_limit(max_depth)
-
+    if max_depth is None:
+        if not python_is_optimized() or Py_DEBUG:
+            # Python built without compiler optimizations or in debug mode
+            # usually consumes more stack memory per function call.
+            # Unoptimized number based on what works under a WASI debug build.
+            max_depth = 50
+        else:
+            max_depth = 100
+    elif max_depth < 3:
+        raise ValueError("max_depth must be at least 3, got {max_depth}")
+    depth = get_recursion_depth()
+    depth = max(depth - 1, 1)  # Ignore infinite_recursion() frame.
+    limit = depth + max_depth
+    return set_recursion_limit(limit)
 
 def ignore_deprecations_from(module: str, *, like: str) -> object:
     token = object()
@@ -2261,6 +2189,62 @@ def requires_venv_with_pip():
     return unittest.skipUnless(ctypes, 'venv: pip requires ctypes')
 
 
+@functools.cache
+def _findwheel(pkgname):
+    """Try to find a wheel with the package specified as pkgname.
+
+    If set, the wheels are searched for in WHEEL_PKG_DIR (see ensurepip).
+    Otherwise, they are searched for in the test directory.
+    """
+    wheel_dir = sysconfig.get_config_var('WHEEL_PKG_DIR') or TEST_HOME_DIR
+    filenames = os.listdir(wheel_dir)
+    filenames = sorted(filenames, reverse=True)  # approximate "newest" first
+    for filename in filenames:
+        # filename is like 'setuptools-67.6.1-py3-none-any.whl'
+        if not filename.endswith(".whl"):
+            continue
+        prefix = pkgname + '-'
+        if filename.startswith(prefix):
+            return os.path.join(wheel_dir, filename)
+    raise FileNotFoundError(f"No wheel for {pkgname} found in {wheel_dir}")
+
+
+# Context manager that creates a virtual environment, install setuptools and wheel in it
+# and returns the path to the venv directory and the path to the python executable
+@contextlib.contextmanager
+def setup_venv_with_pip_setuptools_wheel(venv_dir):
+    import subprocess
+    from .os_helper import temp_cwd
+
+    with temp_cwd() as temp_dir:
+        # Create virtual environment to get setuptools
+        cmd = [sys.executable, '-X', 'dev', '-m', 'venv', venv_dir]
+        if verbose:
+            print()
+            print('Run:', ' '.join(cmd))
+        subprocess.run(cmd, check=True)
+
+        venv = os.path.join(temp_dir, venv_dir)
+
+        # Get the Python executable of the venv
+        python_exe = os.path.basename(sys.executable)
+        if sys.platform == 'win32':
+            python = os.path.join(venv, 'Scripts', python_exe)
+        else:
+            python = os.path.join(venv, 'bin', python_exe)
+
+        cmd = [python, '-X', 'dev',
+               '-m', 'pip', 'install',
+               _findwheel('setuptools'),
+               _findwheel('wheel')]
+        if verbose:
+            print()
+            print('Run:', ' '.join(cmd))
+        subprocess.run(cmd, check=True)
+
+        yield python
+
+
 # True if Python is built with the Py_DEBUG macro defined: if
 # Python is built in debug mode (./configure --with-pydebug).
 Py_DEBUG = hasattr(sys, 'gettotalrefcount')
@@ -2391,3 +2375,63 @@ def adjust_int_max_str_digits(max_digits):
 
 #For recursion tests, easily exceeds default recursion limit
 EXCEEDS_RECURSION_LIMIT = 5000
+
+def _get_c_recursion_limit():
+    try:
+        import _testcapi
+        return _testcapi.Py_C_RECURSION_LIMIT
+    except (ImportError, AttributeError):
+        # Originally taken from Include/cpython/pystate.h .
+        return 1500
+
+# The default C recursion limit.
+Py_C_RECURSION_LIMIT = _get_c_recursion_limit()
+
+#Windows doesn't have os.uname() but it doesn't support s390x.
+skip_on_s390x = unittest.skipIf(hasattr(os, 'uname') and os.uname().machine == 's390x',
+                                'skipped on s390x')
+
+Py_TRACE_REFS = hasattr(sys, 'getobjects')
+
+# Decorator to disable optimizer while a function run
+def without_optimizer(func):
+    try:
+        import _testinternalcapi
+    except ImportError:
+        return func
+    @functools.wraps(func)
+    def wrapper(*args, **kwargs):
+        save_opt = _testinternalcapi.get_optimizer()
+        try:
+            _testinternalcapi.set_optimizer(None)
+            return func(*args, **kwargs)
+        finally:
+            _testinternalcapi.set_optimizer(save_opt)
+    return wrapper
+
+
+_BASE_COPY_SRC_DIR_IGNORED_NAMES = frozenset({
+    # SRC_DIR/.git
+    '.git',
+    # ignore all __pycache__/ sub-directories
+    '__pycache__',
+})
+
+# Ignore function for shutil.copytree() to copy the Python source code.
+def copy_python_src_ignore(path, names):
+    ignored = _BASE_COPY_SRC_DIR_IGNORED_NAMES
+    if os.path.basename(path) == 'Doc':
+        ignored |= {
+            # SRC_DIR/Doc/build/
+            'build',
+            # SRC_DIR/Doc/venv/
+            'venv',
+        }
+
+    # check if we are at the root of the source code
+    elif 'Modules' in names:
+        ignored |= {
+            # SRC_DIR/build/
+            'build',
+        }
+    return ignored
diff --git a/Lib/test/support/bytecode_helper.py b/Lib/test/support/bytecode_helper.py
index 7b577f54b8adc4..388d1266773c8a 100644
--- a/Lib/test/support/bytecode_helper.py
+++ b/Lib/test/support/bytecode_helper.py
@@ -130,10 +130,10 @@ def generate_code(self, ast):
 
 class CfgOptimizationTestCase(CompilationStepTestCase):
 
-    def get_optimized(self, insts, consts):
+    def get_optimized(self, insts, consts, nlocals=0):
         insts = self.normalize_insts(insts)
         insts = self.complete_insts_info(insts)
-        insts = optimize_cfg(insts, consts)
+        insts = optimize_cfg(insts, consts, nlocals)
         return insts, consts
 
 class AssemblerTestCase(CompilationStepTestCase):
diff --git a/Lib/test/support/hypothesis_helper.py b/Lib/test/support/hypothesis_helper.py
index 76bd2490fe6e3d..db93eea5e912e0 100644
--- a/Lib/test/support/hypothesis_helper.py
+++ b/Lib/test/support/hypothesis_helper.py
@@ -1,4 +1,38 @@
+import os
+
 try:
     import hypothesis
 except ImportError:
     from . import _hypothesis_stubs as hypothesis
+else:
+    # When using the real Hypothesis, we'll configure it to ignore occasional
+    # slow tests (avoiding flakiness from random VM slowness in CI).
+    hypothesis.settings.register_profile(
+        "slow-is-ok",
+        deadline=None,
+        suppress_health_check=[
+            hypothesis.HealthCheck.too_slow,
+            hypothesis.HealthCheck.differing_executors,
+        ],
+    )
+    hypothesis.settings.load_profile("slow-is-ok")
+
+    # For local development, we'll write to the default on-local-disk database
+    # of failing examples, and also use a pull-through cache to automatically
+    # replay any failing examples discovered in CI.  For details on how this
+    # works, see https://hypothesis.readthedocs.io/en/latest/database.html
+    if "CI" not in os.environ:
+        from hypothesis.database import (
+            GitHubArtifactDatabase,
+            MultiplexedDatabase,
+            ReadOnlyDatabase,
+        )
+
+        hypothesis.settings.register_profile(
+            "cpython-local-dev",
+            database=MultiplexedDatabase(
+                hypothesis.settings.default.database,
+                ReadOnlyDatabase(GitHubArtifactDatabase("python", "cpython")),
+            ),
+        )
+        hypothesis.settings.load_profile("cpython-local-dev")
diff --git a/Lib/test/support/import_helper.py b/Lib/test/support/import_helper.py
index 67f18e530edc4b..3d804f2b590108 100644
--- a/Lib/test/support/import_helper.py
+++ b/Lib/test/support/import_helper.py
@@ -8,7 +8,7 @@
 import unittest
 import warnings
 
-from .os_helper import unlink
+from .os_helper import unlink, temp_dir
 
 
 @contextlib.contextmanager
@@ -274,3 +274,26 @@ def mock_register_at_fork(func):
     # memory.
     from unittest import mock
     return mock.patch('os.register_at_fork', create=True)(func)
+
+
+@contextlib.contextmanager
+def ready_to_import(name=None, source=""):
+    from test.support import script_helper
+
+    # 1. Sets up a temporary directory and removes it afterwards
+    # 2. Creates the module file
+    # 3. Temporarily clears the module from sys.modules (if any)
+    # 4. Reverts or removes the module when cleaning up
+    name = name or "spam"
+    with temp_dir() as tempdir:
+        path = script_helper.make_script(tempdir, name, source)
+        old_module = sys.modules.pop(name, None)
+        try:
+            sys.path.insert(0, tempdir)
+            yield name, path
+            sys.path.remove(tempdir)
+        finally:
+            if old_module is not None:
+                sys.modules[name] = old_module
+            else:
+                sys.modules.pop(name, None)
diff --git a/Lib/test/support/interpreters.py b/Lib/test/support/interpreters.py
index eeff3abe0324e5..089fe7ef56df78 100644
--- a/Lib/test/support/interpreters.py
+++ b/Lib/test/support/interpreters.py
@@ -7,12 +7,14 @@
 # aliases:
 from _xxsubinterpreters import is_shareable
 from _xxinterpchannels import (
-    ChannelError, ChannelNotFoundError, ChannelEmptyError,
+    ChannelError, ChannelNotFoundError, ChannelClosedError,
+    ChannelEmptyError, ChannelNotEmptyError,
 )
 
 
 __all__ = [
     'Interpreter', 'get_current', 'get_main', 'create', 'list_all',
+    'RunFailedError',
     'SendChannel', 'RecvChannel',
     'create_channel', 'list_all_channels', 'is_shareable',
     'ChannelError', 'ChannelNotFoundError',
@@ -20,6 +22,19 @@
     ]
 
 
+class RunFailedError(RuntimeError):
+
+    def __init__(self, excinfo):
+        msg = excinfo.formatted
+        if not msg:
+            if excinfo.type and snapshot.msg:
+                msg = f'{snapshot.type.__name__}: {snapshot.msg}'
+            else:
+                msg = snapshot.type.__name__ or snapshot.msg
+        super().__init__(msg)
+        self.snapshot = excinfo
+
+
 def create(*, isolated=True):
     """Return a new (idle) Python interpreter."""
     id = _interpreters.create(isolated=isolated)
@@ -90,12 +105,28 @@ def close(self):
         """
         return _interpreters.destroy(self._id)
 
-    def run(self, src_str, /, *, channels=None):
+    # XXX Rename "run" to "exec"?
+    def run(self, src_str, /, channels=None):
         """Run the given source code in the interpreter.
 
-        This blocks the current Python thread until done.
+        This is essentially the same as calling the builtin "exec"
+        with this interpreter, using the __dict__ of its __main__
+        module as both globals and locals.
+
+        There is no return value.
+
+        If the code raises an unhandled exception then a RunFailedError
+        is raised, which summarizes the unhandled exception.  The actual
+        exception is discarded because objects cannot be shared between
+        interpreters.
+
+        This blocks the current Python thread until done.  During
+        that time, the previous interpreter is allowed to run
+        in other threads.
         """
-        _interpreters.run_string(self._id, src_str, channels)
+        excinfo = _interpreters.exec(self._id, src_str, channels)
+        if excinfo is not None:
+            raise RunFailedError(excinfo)
 
 
 def create_channel():
@@ -117,10 +148,16 @@ def list_all_channels():
 class _ChannelEnd:
     """The base class for RecvChannel and SendChannel."""
 
-    def __init__(self, id):
-        if not isinstance(id, (int, _channels.ChannelID)):
-            raise TypeError(f'id must be an int, got {id!r}')
-        self._id = id
+    _end = None
+
+    def __init__(self, cid):
+        if self._end == 'send':
+            cid = _channels._channel_id(cid, send=True, force=True)
+        elif self._end == 'recv':
+            cid = _channels._channel_id(cid, recv=True, force=True)
+        else:
+            raise NotImplementedError(self._end)
+        self._id = cid
 
     def __repr__(self):
         return f'{type(self).__name__}(id={int(self._id)})'
@@ -140,6 +177,14 @@ def __eq__(self, other):
     def id(self):
         return self._id
 
+    @property
+    def _info(self):
+        return _channels.get_info(self._id)
+
+    @property
+    def is_closed(self):
+        return self._info.closed
+
 
 _NOT_SET = object()
 
@@ -147,15 +192,27 @@ def id(self):
 class RecvChannel(_ChannelEnd):
     """The receiving end of a cross-interpreter channel."""
 
-    def recv(self, *, _sentinel=object(), _delay=10 / 1000):  # 10 milliseconds
+    _end = 'recv'
+
+    def recv(self, timeout=None, *,
+             _sentinel=object(),
+             _delay=10 / 1000,  # 10 milliseconds
+             ):
         """Return the next object from the channel.
 
         This blocks until an object has been sent, if none have been
         sent already.
         """
+        if timeout is not None:
+            timeout = int(timeout)
+            if timeout < 0:
+                raise ValueError(f'timeout value must be non-negative')
+            end = time.time() + timeout
         obj = _channels.recv(self._id, _sentinel)
         while obj is _sentinel:
             time.sleep(_delay)
+            if timeout is not None and time.time() >= end:
+                raise TimeoutError
             obj = _channels.recv(self._id, _sentinel)
         return obj
 
@@ -171,20 +228,26 @@ def recv_nowait(self, default=_NOT_SET):
         else:
             return _channels.recv(self._id, default)
 
+    def close(self):
+        _channels.close(self._id, recv=True)
+
 
 class SendChannel(_ChannelEnd):
     """The sending end of a cross-interpreter channel."""
 
-    def send(self, obj):
+    _end = 'send'
+
+    @property
+    def is_closed(self):
+        info = self._info
+        return info.closed or info.closing
+
+    def send(self, obj, timeout=None):
         """Send the object (i.e. its data) to the channel's receiving end.
 
         This blocks until the object is received.
         """
-        _channels.send(self._id, obj)
-        # XXX We are missing a low-level channel_send_wait().
-        # See bpo-32604 and gh-19829.
-        # Until that shows up we fake it:
-        time.sleep(2)
+        _channels.send(self._id, obj, timeout=timeout, blocking=True)
 
     def send_nowait(self, obj):
         """Send the object to the channel's receiving end.
@@ -195,4 +258,26 @@ def send_nowait(self, obj):
         # XXX Note that at the moment channel_send() only ever returns
         # None.  This should be fixed when channel_send_wait() is added.
         # See bpo-32604 and gh-19829.
-        return _channels.send(self._id, obj)
+        return _channels.send(self._id, obj, blocking=False)
+
+    def send_buffer(self, obj, timeout=None):
+        """Send the object's buffer to the channel's receiving end.
+
+        This blocks until the object is received.
+        """
+        _channels.send_buffer(self._id, obj, timeout=timeout, blocking=True)
+
+    def send_buffer_nowait(self, obj):
+        """Send the object's buffer to the channel's receiving end.
+
+        If the object is immediately received then return True
+        (else False).  Otherwise this is the same as send().
+        """
+        return _channels.send_buffer(self._id, obj, blocking=False)
+
+    def close(self):
+        _channels.close(self._id, send=True)
+
+
+# XXX This is causing leaks (gh-110318):
+_channels._register_end_types(SendChannel, RecvChannel)
diff --git a/Lib/test/support/os_helper.py b/Lib/test/support/os_helper.py
index 821a4b1ffd5077..7a67d87fb9e846 100644
--- a/Lib/test/support/os_helper.py
+++ b/Lib/test/support/os_helper.py
@@ -10,6 +10,8 @@
 import unittest
 import warnings
 
+from test import support
+
 
 # Filename used for testing
 TESTFN_ASCII = '@test'
@@ -590,10 +592,17 @@ def fd_count():
     """Count the number of open file descriptors.
     """
     if sys.platform.startswith(('linux', 'freebsd', 'emscripten')):
+        fd_path = "/proc/self/fd"
+    elif sys.platform == "darwin":
+        fd_path = "/dev/fd"
+    else:
+        fd_path = None
+
+    if fd_path is not None:
         try:
-            names = os.listdir("/proc/self/fd")
+            names = os.listdir(fd_path)
             # Subtract one because listdir() internally opens a file
-            # descriptor to list the content of the /proc/self/fd/ directory.
+            # descriptor to list the content of the directory.
             return len(names) - 1
         except FileNotFoundError:
             pass
@@ -720,13 +729,16 @@ def __exit__(self, *ignore_exc):
 
 
 try:
-    import ctypes
-    kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)
-
-    ERROR_FILE_NOT_FOUND = 2
-    DDD_REMOVE_DEFINITION = 2
-    DDD_EXACT_MATCH_ON_REMOVE = 4
-    DDD_NO_BROADCAST_SYSTEM = 8
+    if support.MS_WINDOWS:
+        import ctypes
+        kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)
+
+        ERROR_FILE_NOT_FOUND = 2
+        DDD_REMOVE_DEFINITION = 2
+        DDD_EXACT_MATCH_ON_REMOVE = 4
+        DDD_NO_BROADCAST_SYSTEM = 8
+    else:
+        raise AttributeError
 except (ImportError, AttributeError):
     def subst_drive(path):
         raise unittest.SkipTest('ctypes or kernel32 is not available')
diff --git a/Lib/test/support/pty_helper.py b/Lib/test/support/pty_helper.py
new file mode 100644
index 00000000000000..11037d22516448
--- /dev/null
+++ b/Lib/test/support/pty_helper.py
@@ -0,0 +1,60 @@
+"""
+Helper to run a script in a pseudo-terminal.
+"""
+import os
+import selectors
+import subprocess
+import sys
+from contextlib import ExitStack
+from errno import EIO
+
+from test.support.import_helper import import_module
+
+def run_pty(script, input=b"dummy input\r", env=None):
+    pty = import_module('pty')
+    output = bytearray()
+    [master, slave] = pty.openpty()
+    args = (sys.executable, '-c', script)
+    proc = subprocess.Popen(args, stdin=slave, stdout=slave, stderr=slave, env=env)
+    os.close(slave)
+    with ExitStack() as cleanup:
+        cleanup.enter_context(proc)
+        def terminate(proc):
+            try:
+                proc.terminate()
+            except ProcessLookupError:
+                # Workaround for Open/Net BSD bug (Issue 16762)
+                pass
+        cleanup.callback(terminate, proc)
+        cleanup.callback(os.close, master)
+        # Avoid using DefaultSelector and PollSelector. Kqueue() does not
+        # work with pseudo-terminals on OS X < 10.9 (Issue 20365) and Open
+        # BSD (Issue 20667). Poll() does not work with OS X 10.6 or 10.4
+        # either (Issue 20472). Hopefully the file descriptor is low enough
+        # to use with select().
+        sel = cleanup.enter_context(selectors.SelectSelector())
+        sel.register(master, selectors.EVENT_READ | selectors.EVENT_WRITE)
+        os.set_blocking(master, False)
+        while True:
+            for [_, events] in sel.select():
+                if events & selectors.EVENT_READ:
+                    try:
+                        chunk = os.read(master, 0x10000)
+                    except OSError as err:
+                        # Linux raises EIO when slave is closed (Issue 5380)
+                        if err.errno != EIO:
+                            raise
+                        chunk = b""
+                    if not chunk:
+                        return output
+                    output.extend(chunk)
+                if events & selectors.EVENT_WRITE:
+                    try:
+                        input = input[os.write(master, input):]
+                    except OSError as err:
+                        # Apparently EIO means the slave was closed
+                        if err.errno != EIO:
+                            raise
+                        input = b""  # Stop writing
+                    if not input:
+                        sel.modify(master, selectors.EVENT_READ)
diff --git a/Lib/test/support/script_helper.py b/Lib/test/support/script_helper.py
index c2b43f4060eb55..759020c33aa700 100644
--- a/Lib/test/support/script_helper.py
+++ b/Lib/test/support/script_helper.py
@@ -8,7 +8,6 @@
 import os.path
 import subprocess
 import py_compile
-import zipfile
 
 from importlib.util import source_from_cache
 from test import support
@@ -93,13 +92,28 @@ def fail(self, cmd_line):
 # Executing the interpreter in a subprocess
 @support.requires_subprocess()
 def run_python_until_end(*args, **env_vars):
+    """Used to implement assert_python_*.
+
+    *args are the command line flags to pass to the python interpreter.
+    **env_vars keyword arguments are environment variables to set on the process.
+
+    If __run_using_command= is supplied, it must be a list of
+    command line arguments to prepend to the command line used.
+    Useful when you want to run another command that should launch the
+    python interpreter via its own arguments. ["/bin/echo", "--"] for
+    example could print the unquoted python command line instead of
+    run it.
+    """
     env_required = interpreter_requires_environment()
+    run_using_command = env_vars.pop('__run_using_command', None)
     cwd = env_vars.pop('__cwd', None)
     if '__isolated' in env_vars:
         isolated = env_vars.pop('__isolated')
     else:
         isolated = not env_vars and not env_required
     cmd_line = [sys.executable, '-X', 'faulthandler']
+    if run_using_command:
+        cmd_line = run_using_command + cmd_line
     if isolated:
         # isolated mode: ignore Python environment variables, ignore user
         # site-packages, and don't add the current directory to sys.path
@@ -226,6 +240,7 @@ def make_script(script_dir, script_basename, source, omit_suffix=False):
 
 
 def make_zip_script(zip_dir, zip_basename, script_name, name_in_zip=None):
+    import zipfile
     zip_filename = zip_basename+os.extsep+'zip'
     zip_name = os.path.join(zip_dir, zip_filename)
     with zipfile.ZipFile(zip_name, 'w') as zip_file:
@@ -252,6 +267,7 @@ def make_pkg(pkg_dir, init_source=''):
 
 def make_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
                  source, depth=1, compiled=False):
+    import zipfile
     unlink = []
     init_name = make_script(zip_dir, '__init__', '')
     unlink.append(init_name)
diff --git a/Lib/test/support/socket_helper.py b/Lib/test/support/socket_helper.py
index 78409238db8954..87941ee1791b4e 100644
--- a/Lib/test/support/socket_helper.py
+++ b/Lib/test/support/socket_helper.py
@@ -3,11 +3,11 @@
 import os.path
 import socket
 import sys
+import subprocess
 import tempfile
 import unittest
 
 from .. import support
-from . import warnings_helper
 
 HOST = "localhost"
 HOSTv4 = "127.0.0.1"
@@ -195,7 +195,6 @@ def get_socket_conn_refused_errs():
 def transient_internet(resource_name, *, timeout=_NOT_SET, errnos=()):
     """Return a context manager that raises ResourceDenied when various issues
     with the internet connection manifest themselves as exceptions."""
-    nntplib = warnings_helper.import_deprecated("nntplib")
     import urllib.error
     if timeout is _NOT_SET:
         timeout = support.INTERNET_TIMEOUT
@@ -248,10 +247,6 @@ def filter_error(err):
         if timeout is not None:
             socket.setdefaulttimeout(timeout)
         yield
-    except nntplib.NNTPTemporaryError as err:
-        if support.verbose:
-            sys.stderr.write(denied.args[0] + "\n")
-        raise denied from err
     except OSError as err:
         # urllib can wrap original socket errors multiple times (!), we must
         # unwrap to get at the original error.
@@ -283,3 +278,62 @@ def create_unix_domain_name():
     """
     return tempfile.mktemp(prefix="test_python_", suffix='.sock',
                            dir=os.path.curdir)
+
+
+# consider that sysctl values should not change while tests are running
+_sysctl_cache = {}
+
+def _get_sysctl(name):
+    """Get a sysctl value as an integer."""
+    try:
+        return _sysctl_cache[name]
+    except KeyError:
+        pass
+
+    # At least Linux and FreeBSD support the "-n" option
+    cmd = ['sysctl', '-n', name]
+    proc = subprocess.run(cmd,
+                          stdout=subprocess.PIPE,
+                          stderr=subprocess.STDOUT,
+                          text=True)
+    if proc.returncode:
+        support.print_warning(f'{' '.join(cmd)!r} command failed with '
+                              f'exit code {proc.returncode}')
+        # cache the error to only log the warning once
+        _sysctl_cache[name] = None
+        return None
+    output = proc.stdout
+
+    # Parse '0\n' to get '0'
+    try:
+        value = int(output.strip())
+    except Exception as exc:
+        support.print_warning(f'Failed to parse {' '.join(cmd)!r} '
+                              f'command output {output!r}: {exc!r}')
+        # cache the error to only log the warning once
+        _sysctl_cache[name] = None
+        return None
+
+    _sysctl_cache[name] = value
+    return value
+
+
+def tcp_blackhole():
+    if not sys.platform.startswith('freebsd'):
+        return False
+
+    # gh-109015: test if FreeBSD TCP blackhole is enabled
+    value = _get_sysctl('net.inet.tcp.blackhole')
+    if value is None:
+        # don't skip if we fail to get the sysctl value
+        return False
+    return (value != 0)
+
+
+def skip_if_tcp_blackhole(test):
+    """Decorator skipping test if TCP blackhole is enabled."""
+    skip_if = unittest.skipIf(
+        tcp_blackhole(),
+        "TCP blackhole is enabled (sysctl net.inet.tcp.blackhole)"
+    )
+    return skip_if(test)
diff --git a/Lib/test/support/threading_helper.py b/Lib/test/support/threading_helper.py
index b9973c8bf5c914..afa25a76f63829 100644
--- a/Lib/test/support/threading_helper.py
+++ b/Lib/test/support/threading_helper.py
@@ -22,34 +22,37 @@
 
 
 def threading_setup():
-    return _thread._count(), threading._dangling.copy()
+    return _thread._count(), len(threading._dangling)
 
 
 def threading_cleanup(*original_values):
-    _MAX_COUNT = 100
-
-    for count in range(_MAX_COUNT):
-        values = _thread._count(), threading._dangling
-        if values == original_values:
-            break
-
-        if not count:
-            # Display a warning at the first iteration
-            support.environment_altered = True
-            dangling_threads = values[1]
-            support.print_warning(f"threading_cleanup() failed to cleanup "
-                                  f"{values[0] - original_values[0]} threads "
-                                  f"(count: {values[0]}, "
-                                  f"dangling: {len(dangling_threads)})")
-            for thread in dangling_threads:
-                support.print_warning(f"Dangling thread: {thread!r}")
-
-            # Don't hold references to threads
-            dangling_threads = None
-        values = None
-
-        time.sleep(0.01)
-        support.gc_collect()
+    orig_count, orig_ndangling = original_values
+
+    timeout = 1.0
+    for _ in support.sleeping_retry(timeout, error=False):
+        # Copy the thread list to get a consistent output. threading._dangling
+        # is a WeakSet, its value changes when it's read.
+        dangling_threads = list(threading._dangling)
+        count = _thread._count()
+
+        if count <= orig_count:
+            return
+
+    # Timeout!
+    support.environment_altered = True
+    support.print_warning(
+        f"threading_cleanup() failed to clean up threads "
+        f"in {timeout:.1f} seconds\n"
+        f"  before: thread count={orig_count}, dangling={orig_ndangling}\n"
+        f"  after: thread count={count}, dangling={len(dangling_threads)}")
+    for thread in dangling_threads:
+        support.print_warning(f"Dangling thread: {thread!r}")
+
+    # The warning happens when a test spawns threads and some of these threads
+    # are still running after the test completes. To fix this warning, join
+    # threads explicitly to wait until they complete.
+    #
+    # To make the warning more likely, reduce the timeout.
 
 
 def reap_threads(func):
@@ -115,7 +118,11 @@ def join_thread(thread, timeout=None):
 
 @contextlib.contextmanager
 def start_threads(threads, unlock=None):
-    import faulthandler
+    try:
+        import faulthandler
+    except ImportError:
+        # It isn't supported on subinterpreters yet.
+        faulthandler = None
     threads = list(threads)
     started = []
     try:
@@ -147,7 +154,8 @@ def start_threads(threads, unlock=None):
         finally:
             started = [t for t in started if t.is_alive()]
             if started:
-                faulthandler.dump_traceback(sys.stdout)
+                if faulthandler is not None:
+                    faulthandler.dump_traceback(sys.stdout)
                 raise AssertionError('Unable to join %d threads' % len(started))
 
 
diff --git a/Lib/test/test___all__.py b/Lib/test/test___all__.py
index ecf73b3ad1beb5..c87cde4b3d1fab 100644
--- a/Lib/test/test___all__.py
+++ b/Lib/test/test___all__.py
@@ -12,10 +12,19 @@
 
 
 if support.check_sanitizer(address=True, memory=True):
-    # bpo-46633: test___all__ is skipped because importing some modules
-    # directly can trigger known problems with ASAN (like tk or crypt).
-    raise unittest.SkipTest("workaround ASAN build issues on loading tests "
-                            "like tk or crypt")
+    SKIP_MODULES = frozenset((
+        # gh-90791: Tests involving libX11 can SEGFAULT on ASAN/MSAN builds.
+        # Skip modules, packages and tests using '_tkinter'.
+        '_tkinter',
+        'tkinter',
+        'test_tkinter',
+        'test_ttk',
+        'test_ttk_textonly',
+        'idlelib',
+        'test_idle',
+    ))
+else:
+    SKIP_MODULES = ()
 
 
 class NoAll(RuntimeError):
@@ -83,15 +92,23 @@ def walk_modules(self, basedir, modpath):
         for fn in sorted(os.listdir(basedir)):
             path = os.path.join(basedir, fn)
             if os.path.isdir(path):
+                if fn in SKIP_MODULES:
+                    continue
                 pkg_init = os.path.join(path, '__init__.py')
                 if os.path.exists(pkg_init):
                     yield pkg_init, modpath + fn
                     for p, m in self.walk_modules(path, modpath + fn + "."):
                         yield p, m
                 continue
-            if not fn.endswith('.py') or fn == '__init__.py':
+
+            if fn == '__init__.py':
+                continue
+            if not fn.endswith('.py'):
+                continue
+            modname = fn.removesuffix('.py')
+            if modname in SKIP_MODULES:
                 continue
-            yield path, modpath + fn[:-3]
+            yield path, modpath + modname
 
     def test_all(self):
         # List of denied modules and packages
@@ -101,7 +118,8 @@ def test_all(self):
         ])
 
         # In case _socket fails to build, make this test fail more gracefully
-        # than an AttributeError somewhere deep in CGIHTTPServer.
+        # than an AttributeError somewhere deep in concurrent.futures, email
+        # or unittest.
         import _socket
 
         ignored = []
@@ -118,14 +136,14 @@ def test_all(self):
             if denied:
                 continue
             if support.verbose:
-                print(modname)
+                print(f"Check {modname}", flush=True)
             try:
                 # This heuristic speeds up the process by removing, de facto,
                 # most test modules (and avoiding the auto-executing ones).
                 with open(path, "rb") as f:
                     if b"__all__" not in f.read():
                         raise NoAll(modname)
-                    self.check_all(modname)
+                self.check_all(modname)
             except NoAll:
                 ignored.append(modname)
             except FailedImport:
diff --git a/Lib/test/test__opcode.py b/Lib/test/test__opcode.py
index 7640c6fb57d4f3..10f04b64dda40e 100644
--- a/Lib/test/test__opcode.py
+++ b/Lib/test/test__opcode.py
@@ -7,28 +7,69 @@
 from _opcode import stack_effect
 
 
-class OpcodeTests(unittest.TestCase):
+class OpListTests(unittest.TestCase):
+    def check_bool_function_result(self, func, ops, expected):
+        for op in ops:
+            if isinstance(op, str):
+                op = dis.opmap[op]
+            with self.subTest(opcode=op, func=func):
+                self.assertIsInstance(func(op), bool)
+                self.assertEqual(func(op), expected)
 
+    def test_invalid_opcodes(self):
+        invalid = [-100, -1, 255, 512, 513, 1000]
+        self.check_bool_function_result(_opcode.is_valid, invalid, False)
+        self.check_bool_function_result(_opcode.has_arg, invalid, False)
+        self.check_bool_function_result(_opcode.has_const, invalid, False)
+        self.check_bool_function_result(_opcode.has_name, invalid, False)
+        self.check_bool_function_result(_opcode.has_jump, invalid, False)
+        self.check_bool_function_result(_opcode.has_free, invalid, False)
+        self.check_bool_function_result(_opcode.has_local, invalid, False)
+        self.check_bool_function_result(_opcode.has_exc, invalid, False)
+
+    def test_is_valid(self):
+        names = [
+            'CACHE',
+            'POP_TOP',
+            'IMPORT_NAME',
+            'JUMP',
+            'INSTRUMENTED_RETURN_VALUE',
+        ]
+        opcodes = [dis.opmap[opname] for opname in names]
+        self.check_bool_function_result(_opcode.is_valid, opcodes, True)
+
+    def test_oplists(self):
+        def check_function(self, func, expected):
+            for op in [-10, 520]:
+                with self.subTest(opcode=op, func=func):
+                    res = func(op)
+                    self.assertIsInstance(res, bool)
+                    self.assertEqual(res, op in expected)
+
+        check_function(self, _opcode.has_arg, dis.hasarg)
+        check_function(self, _opcode.has_const, dis.hasconst)
+        check_function(self, _opcode.has_name, dis.hasname)
+        check_function(self, _opcode.has_jump, dis.hasjump)
+        check_function(self, _opcode.has_free, dis.hasfree)
+        check_function(self, _opcode.has_local, dis.haslocal)
+        check_function(self, _opcode.has_exc, dis.hasexc)
+
+
+class StackEffectTests(unittest.TestCase):
     def test_stack_effect(self):
         self.assertEqual(stack_effect(dis.opmap['POP_TOP']), -1)
         self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 0), -1)
         self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 1), -1)
         self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 3), -2)
         self.assertRaises(ValueError, stack_effect, 30000)
-        self.assertRaises(ValueError, stack_effect, dis.opmap['BUILD_SLICE'])
-        self.assertRaises(ValueError, stack_effect, dis.opmap['POP_TOP'], 0)
         # All defined opcodes
         has_arg = dis.hasarg
         for name, code in filter(lambda item: item[0] not in dis.deoptmap, dis.opmap.items()):
             if code >= opcode.MIN_INSTRUMENTED_OPCODE:
                 continue
             with self.subTest(opname=name):
-                if code not in has_arg:
-                    stack_effect(code)
-                    self.assertRaises(ValueError, stack_effect, code, 0)
-                else:
-                    stack_effect(code, 0)
-                    self.assertRaises(ValueError, stack_effect, code)
+                stack_effect(code)
+                stack_effect(code, 0)
         # All not defined opcodes
         for code in set(range(256)) - set(dis.opmap.values()):
             with self.subTest(opcode=code):
@@ -73,7 +114,7 @@ def test_specialization_stats(self):
         specialized_opcodes = [
             op.lower()
             for op in opcode._specializations
-            if opcode._inline_cache_entries[opcode.opmap[op]]
+            if opcode._inline_cache_entries.get(op, 0)
         ]
         self.assertIn('load_attr', specialized_opcodes)
         self.assertIn('binary_subscr', specialized_opcodes)
diff --git a/Lib/test/test__xxinterpchannels.py b/Lib/test/test__xxinterpchannels.py
index 750cd99b85e7a6..2b75e2f1916c82 100644
--- a/Lib/test/test__xxinterpchannels.py
+++ b/Lib/test/test__xxinterpchannels.py
@@ -21,6 +21,13 @@
 ##################################
 # helpers
 
+def recv_wait(cid):
+    while True:
+        try:
+            return channels.recv(cid)
+        except channels.ChannelEmptyError:
+            time.sleep(0.1)
+
 #@contextmanager
 #def run_threaded(id, source, **shared):
 #    def run():
@@ -189,7 +196,7 @@ def run_action(cid, action, end, state, *, hideclosed=True):
 def _run_action(cid, action, end, state):
     if action == 'use':
         if end == 'send':
-            channels.send(cid, b'spam')
+            channels.send(cid, b'spam', blocking=False)
             return state.incr()
         elif end == 'recv':
             if not state.pending:
@@ -332,7 +339,7 @@ def test_shareable(self):
         chan = channels.create()
 
         obj = channels.create()
-        channels.send(chan, obj)
+        channels.send(chan, obj, blocking=False)
         got = channels.recv(chan)
 
         self.assertEqual(got, obj)
@@ -390,7 +397,7 @@ def test_channel_list_interpreters_basic(self):
         """Test basic listing channel interpreters."""
         interp0 = interpreters.get_main()
         cid = channels.create()
-        channels.send(cid, "send")
+        channels.send(cid, "send", blocking=False)
         # Test for a channel that has one end associated to an interpreter.
         send_interps = channels.list_interpreters(cid, send=True)
         recv_interps = channels.list_interpreters(cid, send=False)
@@ -416,10 +423,10 @@ def test_channel_list_interpreters_multiple(self):
         interp3 = interpreters.create()
         cid = channels.create()
 
-        channels.send(cid, "send")
+        channels.send(cid, "send", blocking=False)
         _run_output(interp1, dedent(f"""
             import _xxinterpchannels as _channels
-            _channels.send({cid}, "send")
+            _channels.send({cid}, "send", blocking=False)
             """))
         _run_output(interp2, dedent(f"""
             import _xxinterpchannels as _channels
@@ -439,7 +446,7 @@ def test_channel_list_interpreters_destroyed(self):
         interp0 = interpreters.get_main()
         interp1 = interpreters.create()
         cid = channels.create()
-        channels.send(cid, "send")
+        channels.send(cid, "send", blocking=False)
         _run_output(interp1, dedent(f"""
             import _xxinterpchannels as _channels
             obj = _channels.recv({cid})
@@ -465,12 +472,12 @@ def test_channel_list_interpreters_released(self):
         interp1 = interpreters.create()
         interp2 = interpreters.create()
         cid = channels.create()
-        channels.send(cid, "data")
+        channels.send(cid, "data", blocking=False)
         _run_output(interp1, dedent(f"""
             import _xxinterpchannels as _channels
             obj = _channels.recv({cid})
             """))
-        channels.send(cid, "data")
+        channels.send(cid, "data", blocking=False)
         _run_output(interp2, dedent(f"""
             import _xxinterpchannels as _channels
             obj = _channels.recv({cid})
@@ -506,7 +513,7 @@ def test_channel_list_interpreters_closed(self):
         interp1 = interpreters.create()
         cid = channels.create()
         # Put something in the channel so that it's not empty.
-        channels.send(cid, "send")
+        channels.send(cid, "send", blocking=False)
 
         # Check initial state.
         send_interps = channels.list_interpreters(cid, send=True)
@@ -528,7 +535,7 @@ def test_channel_list_interpreters_closed_send_end(self):
         interp1 = interpreters.create()
         cid = channels.create()
         # Put something in the channel so that it's not empty.
-        channels.send(cid, "send")
+        channels.send(cid, "send", blocking=False)
 
         # Check initial state.
         send_interps = channels.list_interpreters(cid, send=True)
@@ -557,12 +564,67 @@ def test_channel_list_interpreters_closed_send_end(self):
         with self.assertRaises(channels.ChannelClosedError):
             channels.list_interpreters(cid, send=False)
 
-    ####################
+    def test_allowed_types(self):
+        cid = channels.create()
+        objects = [
+            None,
+            'spam',
+            b'spam',
+            42,
+        ]
+        for obj in objects:
+            with self.subTest(obj):
+                channels.send(cid, obj, blocking=False)
+                got = channels.recv(cid)
+
+                self.assertEqual(got, obj)
+                self.assertIs(type(got), type(obj))
+                # XXX Check the following?
+                #self.assertIsNot(got, obj)
+                # XXX What about between interpreters?
+
+    def test_run_string_arg_unresolved(self):
+        cid = channels.create()
+        interp = interpreters.create()
+
+        out = _run_output(interp, dedent("""
+            import _xxinterpchannels as _channels
+            print(cid.end)
+            _channels.send(cid, b'spam', blocking=False)
+            """),
+            dict(cid=cid.send))
+        obj = channels.recv(cid)
+
+        self.assertEqual(obj, b'spam')
+        self.assertEqual(out.strip(), 'send')
+
+    # XXX For now there is no high-level channel into which the
+    # sent channel ID can be converted...
+    # Note: this test caused crashes on some buildbots (bpo-33615).
+    @unittest.skip('disabled until high-level channels exist')
+    def test_run_string_arg_resolved(self):
+        cid = channels.create()
+        cid = channels._channel_id(cid, _resolve=True)
+        interp = interpreters.create()
+
+        out = _run_output(interp, dedent("""
+            import _xxinterpchannels as _channels
+            print(chan.id.end)
+            _channels.send(chan.id, b'spam', blocking=False)
+            """),
+            dict(chan=cid.send))
+        obj = channels.recv(cid)
+
+        self.assertEqual(obj, b'spam')
+        self.assertEqual(out.strip(), 'send')
+
+    #-------------------
+    # send/recv
 
     def test_send_recv_main(self):
         cid = channels.create()
         orig = b'spam'
-        channels.send(cid, orig)
+        channels.send(cid, orig, blocking=False)
         obj = channels.recv(cid)
 
         self.assertEqual(obj, orig)
@@ -574,7 +636,7 @@ def test_send_recv_same_interpreter(self):
             import _xxinterpchannels as _channels
             cid = _channels.create()
             orig = b'spam'
-            _channels.send(cid, orig)
+            _channels.send(cid, orig, blocking=False)
             obj = _channels.recv(cid)
             assert obj is not orig
             assert obj == orig
@@ -585,7 +647,7 @@ def test_send_recv_different_interpreters(self):
         id1 = interpreters.create()
         out = _run_output(id1, dedent(f"""
             import _xxinterpchannels as _channels
-            _channels.send({cid}, b'spam')
+            _channels.send({cid}, b'spam', blocking=False)
             """))
         obj = channels.recv(cid)
 
@@ -595,19 +657,14 @@ def test_send_recv_different_threads(self):
         cid = channels.create()
 
         def f():
-            while True:
-                try:
-                    obj = channels.recv(cid)
-                    break
-                except channels.ChannelEmptyError:
-                    time.sleep(0.1)
+            obj = recv_wait(cid)
             channels.send(cid, obj)
         t = threading.Thread(target=f)
         t.start()
 
         channels.send(cid, b'spam')
+        obj = recv_wait(cid)
         t.join()
-        obj = channels.recv(cid)
 
         self.assertEqual(obj, b'spam')
 
@@ -634,8 +691,8 @@ def f():
         t.start()
 
         channels.send(cid, b'spam')
+        obj = recv_wait(cid)
         t.join()
-        obj = channels.recv(cid)
 
         self.assertEqual(obj, b'eggs')
 
@@ -656,10 +713,10 @@ def test_recv_default(self):
         default = object()
         cid = channels.create()
         obj1 = channels.recv(cid, default)
-        channels.send(cid, None)
-        channels.send(cid, 1)
-        channels.send(cid, b'spam')
-        channels.send(cid, b'eggs')
+        channels.send(cid, None, blocking=False)
+        channels.send(cid, 1, blocking=False)
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'eggs', blocking=False)
         obj2 = channels.recv(cid, default)
         obj3 = channels.recv(cid, default)
         obj4 = channels.recv(cid)
@@ -679,7 +736,7 @@ def test_recv_sending_interp_destroyed(self):
             interp = interpreters.create()
             interpreters.run_string(interp, dedent(f"""
                 import _xxinterpchannels as _channels
-                _channels.send({cid1}, b'spam')
+                _channels.send({cid1}, b'spam', blocking=False)
                 """))
             interpreters.destroy(interp)
 
@@ -692,9 +749,9 @@ def test_recv_sending_interp_destroyed(self):
             interp = interpreters.create()
             interpreters.run_string(interp, dedent(f"""
                 import _xxinterpchannels as _channels
-                _channels.send({cid2}, b'spam')
+                _channels.send({cid2}, b'spam', blocking=False)
                 """))
-            channels.send(cid2, b'eggs')
+            channels.send(cid2, b'eggs', blocking=False)
             interpreters.destroy(interp)
 
             channels.recv(cid2)
@@ -703,65 +760,242 @@ def test_recv_sending_interp_destroyed(self):
                 channels.recv(cid2)
             del cid2
 
-    def test_allowed_types(self):
+    #-------------------
+    # send_buffer
+
+    def test_send_buffer(self):
+        buf = bytearray(b'spamspamspam')
         cid = channels.create()
-        objects = [
-            None,
-            'spam',
-            b'spam',
-            42,
-        ]
-        for obj in objects:
-            with self.subTest(obj):
-                channels.send(cid, obj)
-                got = channels.recv(cid)
+        channels.send_buffer(cid, buf, blocking=False)
+        obj = channels.recv(cid)
 
-                self.assertEqual(got, obj)
-                self.assertIs(type(got), type(obj))
-                # XXX Check the following?
-                #self.assertIsNot(got, obj)
-                # XXX What about between interpreters?
+        self.assertIsNot(obj, buf)
+        self.assertIsInstance(obj, memoryview)
+        self.assertEqual(obj, buf)
+
+        buf[4:8] = b'eggs'
+        self.assertEqual(obj, buf)
+        obj[4:8] = b'ham.'
+        self.assertEqual(obj, buf)
+
+    #-------------------
+    # send with waiting
+
+    def build_send_waiter(self, obj, *, buffer=False):
+        # We want a long enough sleep that send() actually has to wait.
+
+        if buffer:
+            send = channels.send_buffer
+        else:
+            send = channels.send
 
-    def test_run_string_arg_unresolved(self):
         cid = channels.create()
-        interp = interpreters.create()
+        try:
+            started = time.monotonic()
+            send(cid, obj, blocking=False)
+            stopped = time.monotonic()
+            channels.recv(cid)
+        finally:
+            channels.destroy(cid)
+        delay = stopped - started  # seconds
+        delay *= 3
 
-        out = _run_output(interp, dedent("""
-            import _xxinterpchannels as _channels
-            print(cid.end)
-            _channels.send(cid, b'spam')
-            """),
-            dict(cid=cid.send))
-        obj = channels.recv(cid)
+        def wait():
+            time.sleep(delay)
+        return wait
 
-        self.assertEqual(obj, b'spam')
-        self.assertEqual(out.strip(), 'send')
+    def test_send_blocking_waiting(self):
+        received = None
+        obj = b'spam'
+        wait = self.build_send_waiter(obj)
+        cid = channels.create()
+        def f():
+            nonlocal received
+            wait()
+            received = recv_wait(cid)
+        t = threading.Thread(target=f)
+        t.start()
+        channels.send(cid, obj, blocking=True)
+        t.join()
 
-    # XXX For now there is no high-level channel into which the
-    # sent channel ID can be converted...
-    # Note: this test caused crashes on some buildbots (bpo-33615).
-    @unittest.skip('disabled until high-level channels exist')
-    def test_run_string_arg_resolved(self):
+        self.assertEqual(received, obj)
+
+    def test_send_buffer_blocking_waiting(self):
+        received = None
+        obj = bytearray(b'spam')
+        wait = self.build_send_waiter(obj, buffer=True)
         cid = channels.create()
-        cid = channels._channel_id(cid, _resolve=True)
-        interp = interpreters.create()
+        def f():
+            nonlocal received
+            wait()
+            received = recv_wait(cid)
+        t = threading.Thread(target=f)
+        t.start()
+        channels.send_buffer(cid, obj, blocking=True)
+        t.join()
 
-        out = _run_output(interp, dedent("""
-            import _xxinterpchannels as _channels
-            print(chan.id.end)
-            _channels.send(chan.id, b'spam')
-            """),
-            dict(chan=cid.send))
-        obj = channels.recv(cid)
+        self.assertEqual(received, obj)
 
-        self.assertEqual(obj, b'spam')
-        self.assertEqual(out.strip(), 'send')
+    def test_send_blocking_no_wait(self):
+        received = None
+        obj = b'spam'
+        cid = channels.create()
+        def f():
+            nonlocal received
+            received = recv_wait(cid)
+        t = threading.Thread(target=f)
+        t.start()
+        channels.send(cid, obj, blocking=True)
+        t.join()
 
+        self.assertEqual(received, obj)
+
+    def test_send_buffer_blocking_no_wait(self):
+        received = None
+        obj = bytearray(b'spam')
+        cid = channels.create()
+        def f():
+            nonlocal received
+            received = recv_wait(cid)
+        t = threading.Thread(target=f)
+        t.start()
+        channels.send_buffer(cid, obj, blocking=True)
+        t.join()
+
+        self.assertEqual(received, obj)
+
+    def test_send_timeout(self):
+        obj = b'spam'
+
+        with self.subTest('non-blocking with timeout'):
+            cid = channels.create()
+            with self.assertRaises(ValueError):
+                channels.send(cid, obj, blocking=False, timeout=0.1)
+
+        with self.subTest('timeout hit'):
+            cid = channels.create()
+            with self.assertRaises(TimeoutError):
+                channels.send(cid, obj, blocking=True, timeout=0.1)
+            with self.assertRaises(channels.ChannelEmptyError):
+                received = channels.recv(cid)
+                print(repr(received))
+
+        with self.subTest('timeout not hit'):
+            cid = channels.create()
+            def f():
+                recv_wait(cid)
+            t = threading.Thread(target=f)
+            t.start()
+            channels.send(cid, obj, blocking=True, timeout=10)
+            t.join()
+
+    def test_send_buffer_timeout(self):
+        try:
+            self._has_run_once_timeout
+        except AttributeError:
+            # At the moment, this test leaks a few references.
+            # It looks like the leak originates with the addition
+            # of _channels.send_buffer() (gh-110246), whereas the
+            # tests were added afterward.  We want this test even
+            # if the refleak isn't fixed yet, so we skip here.
+            raise unittest.SkipTest('temporarily skipped due to refleaks')
+        else:
+            self._has_run_once_timeout = True
+
+        obj = bytearray(b'spam')
+
+        with self.subTest('non-blocking with timeout'):
+            cid = channels.create()
+            with self.assertRaises(ValueError):
+                channels.send_buffer(cid, obj, blocking=False, timeout=0.1)
+
+        with self.subTest('timeout hit'):
+            cid = channels.create()
+            with self.assertRaises(TimeoutError):
+                channels.send_buffer(cid, obj, blocking=True, timeout=0.1)
+            with self.assertRaises(channels.ChannelEmptyError):
+                received = channels.recv(cid)
+                print(repr(received))
+
+        with self.subTest('timeout not hit'):
+            cid = channels.create()
+            def f():
+                recv_wait(cid)
+            t = threading.Thread(target=f)
+            t.start()
+            channels.send_buffer(cid, obj, blocking=True, timeout=10)
+            t.join()
+
+    def test_send_closed_while_waiting(self):
+        obj = b'spam'
+        wait = self.build_send_waiter(obj)
+
+        with self.subTest('without timeout'):
+            cid = channels.create()
+            def f():
+                wait()
+                channels.close(cid, force=True)
+            t = threading.Thread(target=f)
+            t.start()
+            with self.assertRaises(channels.ChannelClosedError):
+                channels.send(cid, obj, blocking=True)
+            t.join()
+
+        with self.subTest('with timeout'):
+            cid = channels.create()
+            def f():
+                wait()
+                channels.close(cid, force=True)
+            t = threading.Thread(target=f)
+            t.start()
+            with self.assertRaises(channels.ChannelClosedError):
+                channels.send(cid, obj, blocking=True, timeout=30)
+            t.join()
+
+    def test_send_buffer_closed_while_waiting(self):
+        try:
+            self._has_run_once_closed
+        except AttributeError:
+            # At the moment, this test leaks a few references.
+            # It looks like the leak originates with the addition
+            # of _channels.send_buffer() (gh-110246), whereas the
+            # tests were added afterward.  We want this test even
+            # if the refleak isn't fixed yet, so we skip here.
+            raise unittest.SkipTest('temporarily skipped due to refleaks')
+        else:
+            self._has_run_once_closed = True
+
+        obj = bytearray(b'spam')
+        wait = self.build_send_waiter(obj, buffer=True)
+
+        with self.subTest('without timeout'):
+            cid = channels.create()
+            def f():
+                wait()
+                channels.close(cid, force=True)
+            t = threading.Thread(target=f)
+            t.start()
+            with self.assertRaises(channels.ChannelClosedError):
+                channels.send_buffer(cid, obj, blocking=True)
+            t.join()
+
+        with self.subTest('with timeout'):
+            cid = channels.create()
+            def f():
+                wait()
+                channels.close(cid, force=True)
+            t = threading.Thread(target=f)
+            t.start()
+            with self.assertRaises(channels.ChannelClosedError):
+                channels.send_buffer(cid, obj, blocking=True, timeout=30)
+            t.join()
+
+    #-------------------
     # close
 
     def test_close_single_user(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.close(cid)
 
@@ -776,27 +1010,27 @@ def test_close_multiple_users(self):
         id2 = interpreters.create()
         interpreters.run_string(id1, dedent(f"""
             import _xxinterpchannels as _channels
-            _channels.send({cid}, b'spam')
+            _channels.send({cid}, b'spam', blocking=False)
             """))
         interpreters.run_string(id2, dedent(f"""
             import _xxinterpchannels as _channels
             _channels.recv({cid})
             """))
         channels.close(cid)
-        with self.assertRaises(interpreters.RunFailedError) as cm:
-            interpreters.run_string(id1, dedent(f"""
+
+        excsnap = interpreters.run_string(id1, dedent(f"""
                 _channels.send({cid}, b'spam')
                 """))
-        self.assertIn('ChannelClosedError', str(cm.exception))
-        with self.assertRaises(interpreters.RunFailedError) as cm:
-            interpreters.run_string(id2, dedent(f"""
+        self.assertEqual(excsnap.type.__name__, 'ChannelClosedError')
+
+        excsnap = interpreters.run_string(id2, dedent(f"""
                 _channels.send({cid}, b'spam')
                 """))
-        self.assertIn('ChannelClosedError', str(cm.exception))
+        self.assertEqual(excsnap.type.__name__, 'ChannelClosedError')
 
     def test_close_multiple_times(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.close(cid)
 
@@ -813,7 +1047,7 @@ def test_close_empty(self):
         for send, recv in tests:
             with self.subTest((send, recv)):
                 cid = channels.create()
-                channels.send(cid, b'spam')
+                channels.send(cid, b'spam', blocking=False)
                 channels.recv(cid)
                 channels.close(cid, send=send, recv=recv)
 
@@ -824,31 +1058,31 @@ def test_close_empty(self):
 
     def test_close_defaults_with_unused_items(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
 
         with self.assertRaises(channels.ChannelNotEmptyError):
             channels.close(cid)
         channels.recv(cid)
-        channels.send(cid, b'eggs')
+        channels.send(cid, b'eggs', blocking=False)
 
     def test_close_recv_with_unused_items_unforced(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
 
         with self.assertRaises(channels.ChannelNotEmptyError):
             channels.close(cid, recv=True)
         channels.recv(cid)
-        channels.send(cid, b'eggs')
+        channels.send(cid, b'eggs', blocking=False)
         channels.recv(cid)
         channels.recv(cid)
         channels.close(cid, recv=True)
 
     def test_close_send_with_unused_items_unforced(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
         channels.close(cid, send=True)
 
         with self.assertRaises(channels.ChannelClosedError):
@@ -860,21 +1094,21 @@ def test_close_send_with_unused_items_unforced(self):
 
     def test_close_both_with_unused_items_unforced(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
 
         with self.assertRaises(channels.ChannelNotEmptyError):
             channels.close(cid, recv=True, send=True)
         channels.recv(cid)
-        channels.send(cid, b'eggs')
+        channels.send(cid, b'eggs', blocking=False)
         channels.recv(cid)
         channels.recv(cid)
         channels.close(cid, recv=True)
 
     def test_close_recv_with_unused_items_forced(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
         channels.close(cid, recv=True, force=True)
 
         with self.assertRaises(channels.ChannelClosedError):
@@ -884,8 +1118,8 @@ def test_close_recv_with_unused_items_forced(self):
 
     def test_close_send_with_unused_items_forced(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
         channels.close(cid, send=True, force=True)
 
         with self.assertRaises(channels.ChannelClosedError):
@@ -895,8 +1129,8 @@ def test_close_send_with_unused_items_forced(self):
 
     def test_close_both_with_unused_items_forced(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
         channels.close(cid, send=True, recv=True, force=True)
 
         with self.assertRaises(channels.ChannelClosedError):
@@ -915,7 +1149,7 @@ def test_close_never_used(self):
 
     def test_close_by_unassociated_interp(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         interp = interpreters.create()
         interpreters.run_string(interp, dedent(f"""
             import _xxinterpchannels as _channels
@@ -928,9 +1162,9 @@ def test_close_by_unassociated_interp(self):
 
     def test_close_used_multiple_times_by_single_user(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'spam')
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.close(cid, force=True)
 
@@ -1002,7 +1236,7 @@ class ChannelReleaseTests(TestBase):
 
     def test_single_user(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.release(cid, send=True, recv=True)
 
@@ -1017,7 +1251,7 @@ def test_multiple_users(self):
         id2 = interpreters.create()
         interpreters.run_string(id1, dedent(f"""
             import _xxinterpchannels as _channels
-            _channels.send({cid}, b'spam')
+            _channels.send({cid}, b'spam', blocking=False)
             """))
         out = _run_output(id2, dedent(f"""
             import _xxinterpchannels as _channels
@@ -1033,7 +1267,7 @@ def test_multiple_users(self):
 
     def test_no_kwargs(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.release(cid)
 
@@ -1044,7 +1278,7 @@ def test_no_kwargs(self):
 
     def test_multiple_times(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.release(cid, send=True, recv=True)
 
@@ -1053,8 +1287,8 @@ def test_multiple_times(self):
 
     def test_with_unused_items(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'ham')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'ham', blocking=False)
         channels.release(cid, send=True, recv=True)
 
         with self.assertRaises(channels.ChannelClosedError):
@@ -1071,7 +1305,7 @@ def test_never_used(self):
 
     def test_by_unassociated_interp(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         interp = interpreters.create()
         interpreters.run_string(interp, dedent(f"""
             import _xxinterpchannels as _channels
@@ -1090,7 +1324,7 @@ def test_close_if_unassociated(self):
         interp = interpreters.create()
         interpreters.run_string(interp, dedent(f"""
             import _xxinterpchannels as _channels
-            obj = _channels.send({cid}, b'spam')
+            obj = _channels.send({cid}, b'spam', blocking=False)
             _channels.release({cid})
             """))
 
@@ -1100,9 +1334,9 @@ def test_close_if_unassociated(self):
     def test_partially(self):
         # XXX Is partial close too weird/confusing?
         cid = channels.create()
-        channels.send(cid, None)
+        channels.send(cid, None, blocking=False)
         channels.recv(cid)
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
         channels.release(cid, send=True)
         obj = channels.recv(cid)
 
@@ -1110,9 +1344,9 @@ def test_partially(self):
 
     def test_used_multiple_times_by_single_user(self):
         cid = channels.create()
-        channels.send(cid, b'spam')
-        channels.send(cid, b'spam')
-        channels.send(cid, b'spam')
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'spam', blocking=False)
+        channels.send(cid, b'spam', blocking=False)
         channels.recv(cid)
         channels.release(cid, send=True, recv=True)
 
@@ -1197,7 +1431,7 @@ def _new_channel(self, creator):
                 cid = _xxsubchannels.create()
                 # We purposefully send back an int to avoid tying the
                 # channel to the other interpreter.
-                _xxsubchannels.send({ch}, int(cid))
+                _xxsubchannels.send({ch}, int(cid), blocking=False)
                 del _xxsubinterpreters
                 """)
             self._cid = channels.recv(ch)
@@ -1427,8 +1661,8 @@ def run_action(self, fix, action, *, hideclosed=True):
                     {repr(fix.state)},
                     hideclosed={hideclosed},
                     )
-                channels.send({_cid}, result.pending.to_bytes(1, 'little'))
-                channels.send({_cid}, b'X' if result.closed else b'')
+                channels.send({_cid}, result.pending.to_bytes(1, 'little'), blocking=False)
+                channels.send({_cid}, b'X' if result.closed else b'', blocking=False)
                 """)
             result = ChannelState(
                 pending=int.from_bytes(channels.recv(_cid), 'little'),
@@ -1475,7 +1709,7 @@ def _assert_closed_in_interp(self, fix, interp=None):
                 """)
             run_interp(interp.id, """
                 with helpers.expect_channel_closed():
-                    channels.send(cid, b'spam')
+                    channels.send(cid, b'spam', blocking=False)
                 """)
             run_interp(interp.id, """
                 with helpers.expect_channel_closed():
diff --git a/Lib/test/test__xxsubinterpreters.py b/Lib/test/test__xxsubinterpreters.py
index 1ee18774d17209..64a9db95e5eaf5 100644
--- a/Lib/test/test__xxsubinterpreters.py
+++ b/Lib/test/test__xxsubinterpreters.py
@@ -7,9 +7,10 @@
 import threading
 import unittest
 
-import _testcapi
+import _testinternalcapi
 from test import support
 from test.support import import_helper
+from test.support import os_helper
 from test.support import script_helper
 
 
@@ -102,6 +103,10 @@ def test_default_shareables(self):
                 'spam',
                 10,
                 -10,
+                True,
+                False,
+                100.0,
+                (1, ('spam', 'eggs')),
                 ]
         for obj in shareables:
             with self.subTest(obj):
@@ -120,8 +125,6 @@ class SubBytes(bytes):
 
         not_shareables = [
                 # singletons
-                True,
-                False,
                 NotImplemented,
                 ...,
                 # builtin types and objects
@@ -129,7 +132,6 @@ class SubBytes(bytes):
                 object,
                 object(),
                 Exception(),
-                100.0,
                 # user-defined types and objects
                 Cheese,
                 Cheese('Wensleydale'),
@@ -146,8 +148,8 @@ class ShareableTypeTests(unittest.TestCase):
     def _assert_values(self, values):
         for obj in values:
             with self.subTest(obj):
-                xid = _testcapi.get_crossinterp_data(obj)
-                got = _testcapi.restore_crossinterp_data(xid)
+                xid = _testinternalcapi.get_crossinterp_data(obj)
+                got = _testinternalcapi.restore_crossinterp_data(xid)
 
                 self.assertEqual(got, obj)
                 self.assertIs(type(got), type(obj))
@@ -155,8 +157,8 @@ def _assert_values(self, values):
     def test_singletons(self):
         for obj in [None]:
             with self.subTest(obj):
-                xid = _testcapi.get_crossinterp_data(obj)
-                got = _testcapi.restore_crossinterp_data(xid)
+                xid = _testinternalcapi.get_crossinterp_data(obj)
+                got = _testinternalcapi.restore_crossinterp_data(xid)
 
                 # XXX What about between interpreters?
                 self.assertIs(got, obj)
@@ -187,7 +189,40 @@ def test_non_shareable_int(self):
         for i in ints:
             with self.subTest(i):
                 with self.assertRaises(OverflowError):
-                    _testcapi.get_crossinterp_data(i)
+                    _testinternalcapi.get_crossinterp_data(i)
+
+    def test_bool(self):
+        self._assert_values([True, False])
+
+    def test_float(self):
+        self._assert_values([0.0, 1.1, -1.0, 0.12345678, -0.12345678])
+
+    def test_tuple(self):
+        self._assert_values([(), (1,), ("hello", "world", ), (1, True, "hello")])
+        # Test nesting
+        self._assert_values([
+            ((1,),),
+            ((1, 2), (3, 4)),
+            ((1, 2), (3, 4), (5, 6)),
+        ])
+
+    def test_tuples_containing_non_shareable_types(self):
+        non_shareables = [
+                Exception(),
+                object(),
+        ]
+        for s in non_shareables:
+            value = tuple([0, 1.0, s])
+            with self.subTest(repr(value)):
+                # XXX Assert the NotShareableError when it is exported
+                with self.assertRaises(ValueError):
+                    _testinternalcapi.get_crossinterp_data(value)
+            # Check nested as well
+            value = tuple([0, 1., (s,)])
+            with self.subTest("nested " + repr(value)):
+                # XXX Assert the NotShareableError when it is exported
+                with self.assertRaises(ValueError):
+                    _testinternalcapi.get_crossinterp_data(value)
 
 
 class ModuleTests(TestBase):
@@ -725,43 +760,6 @@ def test_bytes_for_script(self):
         with self.assertRaises(TypeError):
             interpreters.run_string(self.id, b'print("spam")')
 
-    @contextlib.contextmanager
-    def assert_run_failed(self, exctype, msg=None):
-        with self.assertRaises(interpreters.RunFailedError) as caught:
-            yield
-        if msg is None:
-            self.assertEqual(str(caught.exception).split(':')[0],
-                             str(exctype))
-        else:
-            self.assertEqual(str(caught.exception),
-                             "{}: {}".format(exctype, msg))
-
-    def test_invalid_syntax(self):
-        with self.assert_run_failed(SyntaxError):
-            # missing close paren
-            interpreters.run_string(self.id, 'print("spam"')
-
-    def test_failure(self):
-        with self.assert_run_failed(Exception, 'spam'):
-            interpreters.run_string(self.id, 'raise Exception("spam")')
-
-    def test_SystemExit(self):
-        with self.assert_run_failed(SystemExit, '42'):
-            interpreters.run_string(self.id, 'raise SystemExit(42)')
-
-    def test_sys_exit(self):
-        with self.assert_run_failed(SystemExit):
-            interpreters.run_string(self.id, dedent("""
-                import sys
-                sys.exit()
-                """))
-
-        with self.assert_run_failed(SystemExit, '42'):
-            interpreters.run_string(self.id, dedent("""
-                import sys
-                sys.exit(42)
-                """))
-
     def test_with_shared(self):
         r, w = os.pipe()
 
@@ -925,5 +923,267 @@ def f():
         self.assertEqual(retcode, 0)
 
 
+class RunFailedTests(TestBase):
+
+    def setUp(self):
+        super().setUp()
+        self.id = interpreters.create()
+
+    def add_module(self, modname, text):
+        import tempfile
+        tempdir = tempfile.mkdtemp()
+        self.addCleanup(lambda: os_helper.rmtree(tempdir))
+        interpreters.run_string(self.id, dedent(f"""
+            import sys
+            sys.path.insert(0, {tempdir!r})
+            """))
+        return script_helper.make_script(tempdir, modname, text)
+
+    def run_script(self, text, *, fails=False):
+        r, w = os.pipe()
+        try:
+            script = dedent(f"""
+                import os, sys
+                os.write({w}, b'0')
+
+                # This raises an exception:
+                {{}}
+
+                # Nothing from here down should ever run.
+                os.write({w}, b'1')
+                class NeverError(Exception): pass
+                raise NeverError  # never raised
+                """).format(dedent(text))
+            if fails:
+                err = interpreters.run_string(self.id, script)
+                self.assertIsNot(err, None)
+                return err
+            else:
+                err = interpreters.run_string(self.id, script)
+                self.assertIs(err, None)
+                return None
+        except:
+            raise  # re-raise
+        else:
+            msg = os.read(r, 100)
+            self.assertEqual(msg, b'0')
+        finally:
+            os.close(r)
+            os.close(w)
+
+    def _assert_run_failed(self, exctype, msg, script):
+        if isinstance(exctype, str):
+            exctype_name = exctype
+            exctype = None
+        else:
+            exctype_name = exctype.__name__
+
+        # Run the script.
+        excinfo = self.run_script(script, fails=True)
+
+        # Check the wrapper exception.
+        self.assertEqual(excinfo.type.__name__, exctype_name)
+        if msg is None:
+            self.assertEqual(excinfo.formatted.split(':')[0],
+                             exctype_name)
+        else:
+            self.assertEqual(excinfo.formatted,
+                             '{}: {}'.format(exctype_name, msg))
+
+        return excinfo
+
+    def assert_run_failed(self, exctype, script):
+        self._assert_run_failed(exctype, None, script)
+
+    def assert_run_failed_msg(self, exctype, msg, script):
+        self._assert_run_failed(exctype, msg, script)
+
+    def test_exit(self):
+        with self.subTest('sys.exit(0)'):
+            # XXX Should an unhandled SystemExit(0) be handled as not-an-error?
+            self.assert_run_failed(SystemExit, """
+                sys.exit(0)
+                """)
+
+        with self.subTest('sys.exit()'):
+            self.assert_run_failed(SystemExit, """
+                import sys
+                sys.exit()
+                """)
+
+        with self.subTest('sys.exit(42)'):
+            self.assert_run_failed_msg(SystemExit, '42', """
+                import sys
+                sys.exit(42)
+                """)
+
+        with self.subTest('SystemExit'):
+            self.assert_run_failed_msg(SystemExit, '42', """
+                raise SystemExit(42)
+                """)
+
+        # XXX Also check os._exit() (via a subprocess)?
+
+    def test_plain_exception(self):
+        self.assert_run_failed_msg(Exception, 'spam', """
+            raise Exception("spam")
+            """)
+
+    def test_invalid_syntax(self):
+        script = dedent("""
+            x = 1 + 2
+            y = 2 + 4
+            z = 4 + 8
+
+            # missing close paren
+            print("spam"
+
+            if x + y + z < 20:
+                ...
+            """)
+
+        with self.subTest('script'):
+            self.assert_run_failed(SyntaxError, script)
+
+        with self.subTest('module'):
+            modname = 'spam_spam_spam'
+            filename = self.add_module(modname, script)
+            self.assert_run_failed(SyntaxError, f"""
+                import {modname}
+                """)
+
+    def test_NameError(self):
+        self.assert_run_failed(NameError, """
+            res = spam + eggs
+            """)
+        # XXX check preserved suggestions
+
+    def test_AttributeError(self):
+        self.assert_run_failed(AttributeError, """
+            object().spam
+            """)
+        # XXX check preserved suggestions
+
+    def test_ExceptionGroup(self):
+        self.assert_run_failed(ExceptionGroup, """
+            raise ExceptionGroup('exceptions', [
+                Exception('spam'),
+                ImportError('eggs'),
+            ])
+            """)
+
+    def test_user_defined_exception(self):
+        self.assert_run_failed_msg('MyError', 'spam', """
+            class MyError(Exception):
+                pass
+            raise MyError('spam')
+            """)
+
+
+class RunFuncTests(TestBase):
+
+    def setUp(self):
+        super().setUp()
+        self.id = interpreters.create()
+
+    def test_success(self):
+        r, w = os.pipe()
+        def script():
+            global w
+            import contextlib
+            with open(w, 'w', encoding="utf-8") as spipe:
+                with contextlib.redirect_stdout(spipe):
+                    print('it worked!', end='')
+        interpreters.run_func(self.id, script, shared=dict(w=w))
+
+        with open(r, encoding="utf-8") as outfile:
+            out = outfile.read()
+
+        self.assertEqual(out, 'it worked!')
+
+    def test_in_thread(self):
+        r, w = os.pipe()
+        def script():
+            global w
+            import contextlib
+            with open(w, 'w', encoding="utf-8") as spipe:
+                with contextlib.redirect_stdout(spipe):
+                    print('it worked!', end='')
+        def f():
+            interpreters.run_func(self.id, script, shared=dict(w=w))
+        t = threading.Thread(target=f)
+        t.start()
+        t.join()
+
+        with open(r, encoding="utf-8") as outfile:
+            out = outfile.read()
+
+        self.assertEqual(out, 'it worked!')
+
+    def test_code_object(self):
+        r, w = os.pipe()
+
+        def script():
+            global w
+            import contextlib
+            with open(w, 'w', encoding="utf-8") as spipe:
+                with contextlib.redirect_stdout(spipe):
+                    print('it worked!', end='')
+        code = script.__code__
+        interpreters.run_func(self.id, code, shared=dict(w=w))
+
+        with open(r, encoding="utf-8") as outfile:
+            out = outfile.read()
+
+        self.assertEqual(out, 'it worked!')
+
+    def test_closure(self):
+        spam = True
+        def script():
+            assert spam
+
+        with self.assertRaises(ValueError):
+            interpreters.run_func(self.id, script)
+
+    # XXX This hasn't been fixed yet.
+    @unittest.expectedFailure
+    def test_return_value(self):
+        def script():
+            return 'spam'
+        with self.assertRaises(ValueError):
+            interpreters.run_func(self.id, script)
+
+    def test_args(self):
+        with self.subTest('args'):
+            def script(a, b=0):
+                assert a == b
+            with self.assertRaises(ValueError):
+                interpreters.run_func(self.id, script)
+
+        with self.subTest('*args'):
+            def script(*args):
+                assert not args
+            with self.assertRaises(ValueError):
+                interpreters.run_func(self.id, script)
+
+        with self.subTest('**kwargs'):
+            def script(**kwargs):
+                assert not kwargs
+            with self.assertRaises(ValueError):
+                interpreters.run_func(self.id, script)
+
+        with self.subTest('kwonly'):
+            def script(*, spam=True):
+                assert spam
+            with self.assertRaises(ValueError):
+                interpreters.run_func(self.id, script)
+
+        with self.subTest('posonly'):
+            def script(spam, /):
+                assert spam
+            with self.assertRaises(ValueError):
+                interpreters.run_func(self.id, script)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_abc.py b/Lib/test/test_abc.py
index 86f31a9acb4d55..5ce57cc209ea85 100644
--- a/Lib/test/test_abc.py
+++ b/Lib/test/test_abc.py
@@ -448,15 +448,16 @@ class S(metaclass=abc_ABCMeta):
 
             # Also check that issubclass() propagates exceptions raised by
             # __subclasses__.
+            class CustomError(Exception): ...
             exc_msg = "exception from __subclasses__"
 
             def raise_exc():
-                raise Exception(exc_msg)
+                raise CustomError(exc_msg)
 
             class S(metaclass=abc_ABCMeta):
                 __subclasses__ = raise_exc
 
-            with self.assertRaisesRegex(Exception, exc_msg):
+            with self.assertRaisesRegex(CustomError, exc_msg):
                 issubclass(int, S)
 
         def test_subclasshook(self):
diff --git a/Lib/test/test_aifc.py b/Lib/test/test_aifc.py
deleted file mode 100644
index d3863d4915d449..00000000000000
--- a/Lib/test/test_aifc.py
+++ /dev/null
@@ -1,439 +0,0 @@
-from test.support import findfile
-from test.support.os_helper import TESTFN, unlink
-from test.support.warnings_helper import check_no_resource_warning, import_deprecated
-import unittest
-from unittest import mock
-from test import audiotests
-import io
-import sys
-import struct
-
-
-aifc = import_deprecated("aifc")
-audioop = import_deprecated("audioop")
-
-
-class AifcTest(audiotests.AudioWriteTests,
-               audiotests.AudioTestsWithSourceFile):
-    module = aifc
-    close_fd = True
-    test_unseekable_read = None
-
-
-class AifcPCM8Test(AifcTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm8.aiff'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 1
-    framerate = 11025
-    nframes = 48
-    comptype = b'NONE'
-    compname = b'not compressed'
-    frames = bytes.fromhex("""\
-      02FF 4B00 3104 8008 CB06 4803 BF01 03FE B8FA B4F3 29EB 1AE6 \
-      EDE4 C6E2 0EE0 EFE0 57E2 FBE8 13EF D8F7 97FB F5FC 08FB DFFB \
-      11FA 3EFB BCFC 66FF CF04 4309 C10E 5112 EE17 8216 7F14 8012 \
-      490E 520D EF0F CE0F E40C 630A 080A 2B0B 510E 8B11 B60E 440A \
-      """)
-
-
-class AifcPCM16Test(AifcTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm16.aiff'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 2
-    framerate = 11025
-    nframes = 48
-    comptype = b'NONE'
-    compname = b'not compressed'
-    frames = bytes.fromhex("""\
-      022EFFEA 4B5D00F6 311804EA 80E10840 CBE106B1 48A903F5 BFE601B2 036CFE7B \
-      B858FA3E B4B1F34F 299AEBCA 1A5DE6DA EDFAE491 C628E275 0E09E0B5 EF2AE029 \
-      5758E271 FB35E83F 1376EF86 D82BF727 9790FB76 F5FAFC0F 0867FB9C DF30FB43 \
-      117EFA36 3EE5FB5B BC79FCB1 66D9FF5D CF150412 431D097C C1BA0EC8 512112A1 \
-      EEE21753 82071665 7FFF1443 8004128F 49A20EAF 52BB0DBA EFB40F60 CE3C0FBF \
-      E4B30CEC 63430A5C 08C80A20 2BBB0B08 514A0E43 8BCF1139 B6F60EEB 44120A5E \
-      """)
-
-
-class AifcPCM24Test(AifcTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm24.aiff'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 3
-    framerate = 11025
-    nframes = 48
-    comptype = b'NONE'
-    compname = b'not compressed'
-    frames = bytes.fromhex("""\
-      022D65FFEB9D 4B5A0F00FA54 3113C304EE2B 80DCD6084303 \
-      CBDEC006B261 48A99803F2F8 BFE82401B07D 036BFBFE7B5D \
-      B85756FA3EC9 B4B055F3502B 299830EBCB62 1A5CA7E6D99A \
-      EDFA3EE491BD C625EBE27884 0E05A9E0B6CF EF2929E02922 \
-      5758D8E27067 FB3557E83E16 1377BFEF8402 D82C5BF7272A \
-      978F16FB7745 F5F865FC1013 086635FB9C4E DF30FCFB40EE \
-      117FE0FA3438 3EE6B8FB5AC3 BC77A3FCB2F4 66D6DAFF5F32 \
-      CF13B9041275 431D69097A8C C1BB600EC74E 5120B912A2BA \
-      EEDF641754C0 8207001664B7 7FFFFF14453F 8000001294E6 \
-      499C1B0EB3B2 52B73E0DBCA0 EFB2B20F5FD8 CE3CDB0FBE12 \
-      E4B49C0CEA2D 6344A80A5A7C 08C8FE0A1FFE 2BB9860B0A0E \
-      51486F0E44E1 8BCC64113B05 B6F4EC0EEB36 4413170A5B48 \
-      """)
-
-
-class AifcPCM32Test(AifcTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm32.aiff'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 4
-    framerate = 11025
-    nframes = 48
-    comptype = b'NONE'
-    compname = b'not compressed'
-    frames = bytes.fromhex("""\
-      022D65BCFFEB9D92 4B5A0F8000FA549C 3113C34004EE2BC0 80DCD680084303E0 \
-      CBDEC0C006B26140 48A9980003F2F8FC BFE8248001B07D92 036BFB60FE7B5D34 \
-      B8575600FA3EC920 B4B05500F3502BC0 29983000EBCB6240 1A5CA7A0E6D99A60 \
-      EDFA3E80E491BD40 C625EB80E27884A0 0E05A9A0E0B6CFE0 EF292940E0292280 \
-      5758D800E2706700 FB3557D8E83E1640 1377BF00EF840280 D82C5B80F7272A80 \
-      978F1600FB774560 F5F86510FC101364 086635A0FB9C4E20 DF30FC40FB40EE28 \
-      117FE0A0FA3438B0 3EE6B840FB5AC3F0 BC77A380FCB2F454 66D6DA80FF5F32B4 \
-      CF13B980041275B0 431D6980097A8C00 C1BB60000EC74E00 5120B98012A2BAA0 \
-      EEDF64C01754C060 820700001664B780 7FFFFFFF14453F40 800000001294E6E0 \
-      499C1B000EB3B270 52B73E000DBCA020 EFB2B2E00F5FD880 CE3CDB400FBE1270 \
-      E4B49CC00CEA2D90 6344A8800A5A7CA0 08C8FE800A1FFEE0 2BB986C00B0A0E00 \
-      51486F800E44E190 8BCC6480113B0580 B6F4EC000EEB3630 441317800A5B48A0 \
-      """)
-
-
-class AifcULAWTest(AifcTest, unittest.TestCase):
-    sndfilename = 'pluck-ulaw.aifc'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 2
-    framerate = 11025
-    nframes = 48
-    comptype = b'ulaw'
-    compname = b''
-    frames = bytes.fromhex("""\
-      022CFFE8 497C0104 307C04DC 8284083C CB84069C 497C03DC BE8401AC 036CFE74 \
-      B684FA24 B684F344 2A7CEC04 19FCE704 EE04E504 C584E204 0E3CE104 EF04DF84 \
-      557CE204 FB24E804 12FCEF04 D784F744 9684FB64 F5C4FC24 083CFBA4 DF84FB24 \
-      11FCFA24 3E7CFB64 BA84FCB4 657CFF5C CF84041C 417C093C C1840EBC 517C12FC \
-      EF0416FC 828415FC 7D7C13FC 828412FC 497C0EBC 517C0DBC F0040F3C CD840FFC \
-      E5040CBC 617C0A3C 08BC0A3C 2C7C0B3C 517C0E3C 8A8410FC B6840EBC 457C0A3C \
-      """)
-    if sys.byteorder != 'big':
-        frames = audioop.byteswap(frames, 2)
-
-
-class AifcALAWTest(AifcTest, unittest.TestCase):
-    sndfilename = 'pluck-alaw.aifc'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 2
-    framerate = 11025
-    nframes = 48
-    comptype = b'alaw'
-    compname = b''
-    frames = bytes.fromhex("""\
-      0230FFE8 4A0000F8 310004E0 82000840 CB0006A0 4A0003F0 BE0001A8 0370FE78 \
-      BA00FA20 B600F340 2900EB80 1A80E680 ED80E480 C700E280 0E40E080 EF80E080 \
-      5600E280 FB20E880 1380EF80 D900F740 9600FB60 F5C0FC10 0840FBA0 DF00FB20 \
-      1180FA20 3F00FB60 BE00FCB0 6600FF58 CF000420 42000940 C1000EC0 52001280 \
-      EE801780 82001680 7E001480 82001280 4A000EC0 52000DC0 EF800F40 CF000FC0 \
-      E4800CC0 62000A40 08C00A40 2B000B40 52000E40 8A001180 B6000EC0 46000A40 \
-      """)
-    if sys.byteorder != 'big':
-        frames = audioop.byteswap(frames, 2)
-
-
-class AifcMiscTest(unittest.TestCase):
-    def test_skipunknown(self):
-        #Issue 2245
-        #This file contains chunk types aifc doesn't recognize.
-        f = aifc.open(findfile('Sine-1000Hz-300ms.aif'))
-        f.close()
-
-    def test_close_opened_files_on_error(self):
-        non_aifc_file = findfile('pluck-pcm8.wav', subdir='audiodata')
-        with check_no_resource_warning(self):
-            with self.assertRaises(aifc.Error):
-                # Try opening a non-AIFC file, with the expectation that
-                # `aifc.open` will fail (without raising a ResourceWarning)
-                self.f = aifc.open(non_aifc_file, 'rb')
-
-            # Aifc_write.initfp() won't raise in normal case.  But some errors
-            # (e.g. MemoryError, KeyboardInterrupt, etc..) can happen.
-            with mock.patch.object(aifc.Aifc_write, 'initfp',
-                                   side_effect=RuntimeError):
-                with self.assertRaises(RuntimeError):
-                    self.fout = aifc.open(TESTFN, 'wb')
-
-    def test_params_added(self):
-        f = self.f = aifc.open(TESTFN, 'wb')
-        f.aiff()
-        f.setparams((1, 1, 1, 1, b'NONE', b''))
-        f.close()
-
-        f = aifc.open(TESTFN, 'rb')
-        self.addCleanup(f.close)
-        params = f.getparams()
-        self.assertEqual(params.nchannels, f.getnchannels())
-        self.assertEqual(params.sampwidth, f.getsampwidth())
-        self.assertEqual(params.framerate, f.getframerate())
-        self.assertEqual(params.nframes, f.getnframes())
-        self.assertEqual(params.comptype, f.getcomptype())
-        self.assertEqual(params.compname, f.getcompname())
-
-    def test_write_header_comptype_sampwidth(self):
-        for comptype in (b'ULAW', b'ulaw', b'ALAW', b'alaw', b'G722'):
-            fout = aifc.open(io.BytesIO(), 'wb')
-            fout.setnchannels(1)
-            fout.setframerate(1)
-            fout.setcomptype(comptype, b'')
-            fout.close()
-            self.assertEqual(fout.getsampwidth(), 2)
-            fout.initfp(None)
-
-    def test_write_markers_values(self):
-        fout = aifc.open(io.BytesIO(), 'wb')
-        self.assertEqual(fout.getmarkers(), None)
-        fout.setmark(1, 0, b'foo1')
-        fout.setmark(1, 1, b'foo2')
-        self.assertEqual(fout.getmark(1), (1, 1, b'foo2'))
-        self.assertEqual(fout.getmarkers(), [(1, 1, b'foo2')])
-        fout.initfp(None)
-
-    def test_read_markers(self):
-        fout = self.fout = aifc.open(TESTFN, 'wb')
-        fout.aiff()
-        fout.setparams((1, 1, 1, 1, b'NONE', b''))
-        fout.setmark(1, 0, b'odd')
-        fout.setmark(2, 0, b'even')
-        fout.writeframes(b'\x00')
-        fout.close()
-        f = aifc.open(TESTFN, 'rb')
-        self.addCleanup(f.close)
-        self.assertEqual(f.getmarkers(), [(1, 0, b'odd'), (2, 0, b'even')])
-        self.assertEqual(f.getmark(1), (1, 0, b'odd'))
-        self.assertEqual(f.getmark(2), (2, 0, b'even'))
-        self.assertRaises(aifc.Error, f.getmark, 3)
-
-
-class AIFCLowLevelTest(unittest.TestCase):
-
-    def test_read_written(self):
-        def read_written(self, what):
-            f = io.BytesIO()
-            getattr(aifc, '_write_' + what)(f, x)
-            f.seek(0)
-            return getattr(aifc, '_read_' + what)(f)
-        for x in (-1, 0, 0.1, 1):
-            self.assertEqual(read_written(x, 'float'), x)
-        for x in (float('NaN'), float('Inf')):
-            self.assertEqual(read_written(x, 'float'), aifc._HUGE_VAL)
-        for x in (b'', b'foo', b'a' * 255):
-            self.assertEqual(read_written(x, 'string'), x)
-        for x in (-0x7FFFFFFF, -1, 0, 1, 0x7FFFFFFF):
-            self.assertEqual(read_written(x, 'long'), x)
-        for x in (0, 1, 0xFFFFFFFF):
-            self.assertEqual(read_written(x, 'ulong'), x)
-        for x in (-0x7FFF, -1, 0, 1, 0x7FFF):
-            self.assertEqual(read_written(x, 'short'), x)
-        for x in (0, 1, 0xFFFF):
-            self.assertEqual(read_written(x, 'ushort'), x)
-
-    def test_read_raises(self):
-        f = io.BytesIO(b'\x00')
-        self.assertRaises(EOFError, aifc._read_ulong, f)
-        self.assertRaises(EOFError, aifc._read_long, f)
-        self.assertRaises(EOFError, aifc._read_ushort, f)
-        self.assertRaises(EOFError, aifc._read_short, f)
-
-    def test_write_long_string_raises(self):
-        f = io.BytesIO()
-        with self.assertRaises(ValueError):
-            aifc._write_string(f, b'too long' * 255)
-
-    def test_wrong_open_mode(self):
-        with self.assertRaises(aifc.Error):
-            aifc.open(TESTFN, 'wrong_mode')
-
-    def test_read_wrong_form(self):
-        b1 = io.BytesIO(b'WRNG' + struct.pack('>L', 0))
-        b2 = io.BytesIO(b'FORM' + struct.pack('>L', 4) + b'WRNG')
-        self.assertRaises(aifc.Error, aifc.open, b1)
-        self.assertRaises(aifc.Error, aifc.open, b2)
-
-    def test_read_no_comm_chunk(self):
-        b = io.BytesIO(b'FORM' + struct.pack('>L', 4) + b'AIFF')
-        self.assertRaises(aifc.Error, aifc.open, b)
-
-    def test_read_no_ssnd_chunk(self):
-        b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
-        b += b'COMM' + struct.pack('>LhlhhLL', 38, 1, 0, 8,
-                                   0x4000 | 12, 11025<<18, 0)
-        b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
-        with self.assertRaisesRegex(aifc.Error, 'COMM chunk and/or SSND chunk'
-                                                ' missing'):
-            aifc.open(io.BytesIO(b))
-
-    def test_read_wrong_compression_type(self):
-        b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
-        b += b'COMM' + struct.pack('>LhlhhLL', 23, 1, 0, 8,
-                                   0x4000 | 12, 11025<<18, 0)
-        b += b'WRNG' + struct.pack('B', 0)
-        self.assertRaises(aifc.Error, aifc.open, io.BytesIO(b))
-
-    def test_read_wrong_number_of_channels(self):
-        for nchannels in 0, -1:
-            b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
-            b += b'COMM' + struct.pack('>LhlhhLL', 38, nchannels, 0, 8,
-                                       0x4000 | 12, 11025<<18, 0)
-            b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
-            b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
-            with self.assertRaisesRegex(aifc.Error, 'bad # of channels'):
-                aifc.open(io.BytesIO(b))
-
-    def test_read_wrong_sample_width(self):
-        for sampwidth in 0, -1:
-            b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
-            b += b'COMM' + struct.pack('>LhlhhLL', 38, 1, 0, sampwidth,
-                                       0x4000 | 12, 11025<<18, 0)
-            b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
-            b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
-            with self.assertRaisesRegex(aifc.Error, 'bad sample width'):
-                aifc.open(io.BytesIO(b))
-
-    def test_read_wrong_marks(self):
-        b = b'FORM' + struct.pack('>L', 4) + b'AIFF'
-        b += b'COMM' + struct.pack('>LhlhhLL', 18, 1, 0, 8,
-                                   0x4000 | 12, 11025<<18, 0)
-        b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
-        b += b'MARK' + struct.pack('>LhB', 3, 1, 1)
-        with self.assertWarns(UserWarning) as cm:
-            f = aifc.open(io.BytesIO(b))
-        self.assertEqual(str(cm.warning), 'Warning: MARK chunk contains '
-                                          'only 0 markers instead of 1')
-        self.assertEqual(f.getmarkers(), None)
-
-    def test_read_comm_kludge_compname_even(self):
-        b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
-        b += b'COMM' + struct.pack('>LhlhhLL', 18, 1, 0, 8,
-                                   0x4000 | 12, 11025<<18, 0)
-        b += b'NONE' + struct.pack('B', 4) + b'even' + b'\x00'
-        b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
-        with self.assertWarns(UserWarning) as cm:
-            f = aifc.open(io.BytesIO(b))
-        self.assertEqual(str(cm.warning), 'Warning: bad COMM chunk size')
-        self.assertEqual(f.getcompname(), b'even')
-
-    def test_read_comm_kludge_compname_odd(self):
-        b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
-        b += b'COMM' + struct.pack('>LhlhhLL', 18, 1, 0, 8,
-                                   0x4000 | 12, 11025<<18, 0)
-        b += b'NONE' + struct.pack('B', 3) + b'odd'
-        b += b'SSND' + struct.pack('>L', 8) + b'\x00' * 8
-        with self.assertWarns(UserWarning) as cm:
-            f = aifc.open(io.BytesIO(b))
-        self.assertEqual(str(cm.warning), 'Warning: bad COMM chunk size')
-        self.assertEqual(f.getcompname(), b'odd')
-
-    def test_write_params_raises(self):
-        fout = aifc.open(io.BytesIO(), 'wb')
-        wrong_params = (0, 0, 0, 0, b'WRNG', '')
-        self.assertRaises(aifc.Error, fout.setparams, wrong_params)
-        self.assertRaises(aifc.Error, fout.getparams)
-        self.assertRaises(aifc.Error, fout.setnchannels, 0)
-        self.assertRaises(aifc.Error, fout.getnchannels)
-        self.assertRaises(aifc.Error, fout.setsampwidth, 0)
-        self.assertRaises(aifc.Error, fout.getsampwidth)
-        self.assertRaises(aifc.Error, fout.setframerate, 0)
-        self.assertRaises(aifc.Error, fout.getframerate)
-        self.assertRaises(aifc.Error, fout.setcomptype, b'WRNG', '')
-        fout.aiff()
-        fout.setnchannels(1)
-        fout.setsampwidth(1)
-        fout.setframerate(1)
-        fout.setnframes(1)
-        fout.writeframes(b'\x00')
-        self.assertRaises(aifc.Error, fout.setparams, (1, 1, 1, 1, 1, 1))
-        self.assertRaises(aifc.Error, fout.setnchannels, 1)
-        self.assertRaises(aifc.Error, fout.setsampwidth, 1)
-        self.assertRaises(aifc.Error, fout.setframerate, 1)
-        self.assertRaises(aifc.Error, fout.setnframes, 1)
-        self.assertRaises(aifc.Error, fout.setcomptype, b'NONE', '')
-        self.assertRaises(aifc.Error, fout.aiff)
-        self.assertRaises(aifc.Error, fout.aifc)
-
-    def test_write_params_singles(self):
-        fout = aifc.open(io.BytesIO(), 'wb')
-        fout.aifc()
-        fout.setnchannels(1)
-        fout.setsampwidth(2)
-        fout.setframerate(3)
-        fout.setnframes(4)
-        fout.setcomptype(b'NONE', b'name')
-        self.assertEqual(fout.getnchannels(), 1)
-        self.assertEqual(fout.getsampwidth(), 2)
-        self.assertEqual(fout.getframerate(), 3)
-        self.assertEqual(fout.getnframes(), 0)
-        self.assertEqual(fout.tell(), 0)
-        self.assertEqual(fout.getcomptype(), b'NONE')
-        self.assertEqual(fout.getcompname(), b'name')
-        fout.writeframes(b'\x00' * 4 * fout.getsampwidth() * fout.getnchannels())
-        self.assertEqual(fout.getnframes(), 4)
-        self.assertEqual(fout.tell(), 4)
-
-    def test_write_params_bunch(self):
-        fout = aifc.open(io.BytesIO(), 'wb')
-        fout.aifc()
-        p = (1, 2, 3, 4, b'NONE', b'name')
-        fout.setparams(p)
-        self.assertEqual(fout.getparams(), p)
-        fout.initfp(None)
-
-    def test_write_header_raises(self):
-        fout = aifc.open(io.BytesIO(), 'wb')
-        self.assertRaises(aifc.Error, fout.close)
-        fout = aifc.open(io.BytesIO(), 'wb')
-        fout.setnchannels(1)
-        self.assertRaises(aifc.Error, fout.close)
-        fout = aifc.open(io.BytesIO(), 'wb')
-        fout.setnchannels(1)
-        fout.setsampwidth(1)
-        self.assertRaises(aifc.Error, fout.close)
-
-    def test_write_header_comptype_raises(self):
-        for comptype in (b'ULAW', b'ulaw', b'ALAW', b'alaw', b'G722'):
-            fout = aifc.open(io.BytesIO(), 'wb')
-            fout.setsampwidth(1)
-            fout.setcomptype(comptype, b'')
-            self.assertRaises(aifc.Error, fout.close)
-            fout.initfp(None)
-
-    def test_write_markers_raises(self):
-        fout = aifc.open(io.BytesIO(), 'wb')
-        self.assertRaises(aifc.Error, fout.setmark, 0, 0, b'')
-        self.assertRaises(aifc.Error, fout.setmark, 1, -1, b'')
-        self.assertRaises(aifc.Error, fout.setmark, 1, 0, None)
-        self.assertRaises(aifc.Error, fout.getmark, 1)
-        fout.initfp(None)
-
-    def test_write_aiff_by_extension(self):
-        sampwidth = 2
-        filename = TESTFN + '.aiff'
-        fout = self.fout = aifc.open(filename, 'wb')
-        self.addCleanup(unlink, filename)
-        fout.setparams((1, sampwidth, 1, 1, b'ULAW', b''))
-        frames = b'\x00' * fout.getnchannels() * sampwidth
-        fout.writeframes(frames)
-        fout.close()
-        f = self.f = aifc.open(filename, 'rb')
-        self.assertEqual(f.getcomptype(), b'NONE')
-        f.close()
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 0659d244d35686..7c1f5d36999a3d 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -15,7 +15,7 @@
 import argparse
 import warnings
 
-from test.support import os_helper
+from test.support import os_helper, captured_stderr
 from unittest import mock
 
 
@@ -765,6 +765,49 @@ def test_const(self):
 
         self.assertIn("got an unexpected keyword argument 'const'", str(cm.exception))
 
+    def test_deprecated_init_kw(self):
+        # See gh-92248
+        parser = argparse.ArgumentParser()
+
+        with self.assertWarns(DeprecationWarning):
+            parser.add_argument(
+                '-a',
+                action=argparse.BooleanOptionalAction,
+                type=None,
+            )
+        with self.assertWarns(DeprecationWarning):
+            parser.add_argument(
+                '-b',
+                action=argparse.BooleanOptionalAction,
+                type=bool,
+            )
+
+        with self.assertWarns(DeprecationWarning):
+            parser.add_argument(
+                '-c',
+                action=argparse.BooleanOptionalAction,
+                metavar=None,
+            )
+        with self.assertWarns(DeprecationWarning):
+            parser.add_argument(
+                '-d',
+                action=argparse.BooleanOptionalAction,
+                metavar='d',
+            )
+
+        with self.assertWarns(DeprecationWarning):
+            parser.add_argument(
+                '-e',
+                action=argparse.BooleanOptionalAction,
+                choices=None,
+            )
+        with self.assertWarns(DeprecationWarning):
+            parser.add_argument(
+                '-f',
+                action=argparse.BooleanOptionalAction,
+                choices=(),
+            )
+
 class TestBooleanOptionalActionRequired(ParserTestCase):
     """Tests BooleanOptionalAction required"""
 
@@ -1339,6 +1382,19 @@ class TestPositionalsActionAppend(ParserTestCase):
         ('a b c', NS(spam=['a', ['b', 'c']])),
     ]
 
+
+class TestPositionalsActionExtend(ParserTestCase):
+    """Test the 'extend' action"""
+
+    argument_signatures = [
+        Sig('spam', action='extend'),
+        Sig('spam', action='extend', nargs=2),
+    ]
+    failures = ['', '--foo', 'a', 'a b', 'a b c d']
+    successes = [
+        ('a b c', NS(spam=['a', 'b', 'c'])),
+    ]
+
 # ========================================
 # Combined optionals and positionals tests
 # ========================================
@@ -1376,6 +1432,32 @@ class TestOptionalsAlmostNumericAndPositionals(ParserTestCase):
     ]
 
 
+class TestOptionalsAndPositionalsAppend(ParserTestCase):
+    argument_signatures = [
+        Sig('foo', nargs='*', action='append'),
+        Sig('--bar'),
+    ]
+    failures = ['-foo']
+    successes = [
+        ('a b', NS(foo=[['a', 'b']], bar=None)),
+        ('--bar a b', NS(foo=[['b']], bar='a')),
+        ('a b --bar c', NS(foo=[['a', 'b']], bar='c')),
+    ]
+
+
+class TestOptionalsAndPositionalsExtend(ParserTestCase):
+    argument_signatures = [
+        Sig('foo', nargs='*', action='extend'),
+        Sig('--bar'),
+    ]
+    failures = ['-foo']
+    successes = [
+        ('a b', NS(foo=['a', 'b'], bar=None)),
+        ('--bar a b', NS(foo=['b'], bar='a')),
+        ('a b --bar c', NS(foo=['a', 'b'], bar='c')),
+    ]
+
+
 class TestEmptyAndSpaceContainingArguments(ParserTestCase):
 
     argument_signatures = [
@@ -1856,6 +1938,10 @@ def test_open_args(self):
                 type('foo')
                 m.assert_called_with('foo', *args)
 
+    def test_invalid_file_type(self):
+        with self.assertRaises(ValueError):
+            argparse.FileType('b')('-test')
+
 
 class TestFileTypeMissingInitialization(TestCase):
     """
@@ -2049,6 +2135,27 @@ class TestActionExtend(ParserTestCase):
         ('--foo f1 --foo f2 f3 f4', NS(foo=['f1', 'f2', 'f3', 'f4'])),
     ]
 
+
+class TestInvalidAction(TestCase):
+    """Test invalid user defined Action"""
+
+    class ActionWithoutCall(argparse.Action):
+        pass
+
+    def test_invalid_type(self):
+        parser = argparse.ArgumentParser()
+
+        parser.add_argument('--foo', action=self.ActionWithoutCall)
+        self.assertRaises(NotImplementedError, parser.parse_args, ['--foo', 'bar'])
+
+    def test_modified_invalid_action(self):
+        parser = ErrorRaisingArgumentParser()
+        action = parser.add_argument('--foo')
+        # Someone got crazy and did this
+        action.type = 1
+        self.assertRaises(ArgumentParserError, parser.parse_args, ['--foo', 'bar'])
+
+
 # ================
 # Subparsers tests
 # ================
@@ -2684,6 +2791,9 @@ def test_groups_parents(self):
               -x X
         '''.format(progname, ' ' if progname else '' )))
 
+    def test_wrong_type_parents(self):
+        self.assertRaises(TypeError, ErrorRaisingArgumentParser, parents=[1])
+
 # ==============================
 # Mutually exclusive group tests
 # ==============================
@@ -4700,6 +4810,9 @@ def test_invalid_option_strings(self):
         self.assertValueError('--')
         self.assertValueError('---')
 
+    def test_invalid_prefix(self):
+        self.assertValueError('--foo', '+foo')
+
     def test_invalid_type(self):
         self.assertValueError('--foo', type='int')
         self.assertValueError('--foo', type=(int, float))
@@ -4764,6 +4877,9 @@ def test_parsers_action_missing_params(self):
         self.assertTypeError('command', action='parsers',
                              parser_class=argparse.ArgumentParser)
 
+    def test_version_missing_params(self):
+        self.assertTypeError('command', action='version')
+
     def test_required_positional(self):
         self.assertTypeError('foo', required=True)
 
@@ -5357,6 +5473,17 @@ def test_exclusive_incompatible(self):
         self.assertRaises(TypeError, parser.parse_intermixed_args, [])
         self.assertEqual(group.required, True)
 
+    def test_invalid_args(self):
+        parser = ErrorRaisingArgumentParser(prog='PROG')
+        self.assertRaises(ArgumentParserError, parser.parse_intermixed_args, ['a'])
+
+        parser = ErrorRaisingArgumentParser(prog='PROG')
+        parser.add_argument('--foo', nargs="*")
+        parser.add_argument('foo')
+        with captured_stderr() as stderr:
+            parser.parse_intermixed_args(['hello', '--foo'])
+            self.assertIn("UserWarning", stderr.getvalue())
+
 class TestIntermixedMessageContentError(TestCase):
     # case where Intermixed gives different error message
     # error is raised by 1st parsing step
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index 5b2c107a6044bd..a219fa365e7f20 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -13,11 +13,14 @@
 import operator
 import struct
 import sys
+import warnings
 
 import array
 from array import _array_reconstructor as array_reconstructor
 
-sizeof_wchar = array.array('u').itemsize
+with warnings.catch_warnings():
+    warnings.simplefilter('ignore', DeprecationWarning)
+    sizeof_wchar = array.array('u').itemsize
 
 
 class ArraySubclass(array.array):
@@ -27,7 +30,7 @@ class ArraySubclassWithKwargs(array.array):
     def __init__(self, typecode, newarg=None):
         array.array.__init__(self)
 
-typecodes = 'ubBhHiIlLfdqQ'
+typecodes = 'uwbBhHiIlLfdqQ'
 
 class MiscTest(unittest.TestCase):
 
@@ -93,8 +96,17 @@ def test_empty(self):
 UTF32_LE = 20
 UTF32_BE = 21
 
+
 class ArrayReconstructorTest(unittest.TestCase):
 
+    def setUp(self):
+        self.enterContext(warnings.catch_warnings())
+        warnings.filterwarnings(
+            "ignore",
+            message="The 'u' type code is deprecated and "
+                    "will be removed in Python 3.16",
+            category=DeprecationWarning)
+
     def test_error(self):
         self.assertRaises(TypeError, array_reconstructor,
                           "", "b", 0, b"")
@@ -186,11 +198,12 @@ def test_unicode(self):
         )
         for testcase in testcases:
             mformat_code, encoding = testcase
-            a = array.array('u', teststr)
-            b = array_reconstructor(
-                array.array, 'u', mformat_code, teststr.encode(encoding))
-            self.assertEqual(a, b,
-                msg="{0!r} != {1!r}; testcase={2!r}".format(a, b, testcase))
+            for c in 'uw':
+                a = array.array(c, teststr)
+                b = array_reconstructor(
+                    array.array, c, mformat_code, teststr.encode(encoding))
+                self.assertEqual(a, b,
+                    msg="{0!r} != {1!r}; testcase={2!r}".format(a, b, testcase))
 
 
 class BaseTest:
@@ -202,6 +215,14 @@ class BaseTest:
     # outside: An entry that is not in example
     # minitemsize: the minimum guaranteed itemsize
 
+    def setUp(self):
+        self.enterContext(warnings.catch_warnings())
+        warnings.filterwarnings(
+            "ignore",
+            message="The 'u' type code is deprecated and "
+                    "will be removed in Python 3.16",
+            category=DeprecationWarning)
+
     def assertEntryEqual(self, entry1, entry2):
         self.assertEqual(entry1, entry2)
 
@@ -234,7 +255,7 @@ def test_buffer_info(self):
         self.assertEqual(bi[1], len(a))
 
     def test_byteswap(self):
-        if self.typecode == 'u':
+        if self.typecode in ('u', 'w'):
             example = '\U00100100'
         else:
             example = self.example
@@ -1079,7 +1100,7 @@ def test_buffer(self):
         self.assertEqual(m.tobytes(), expected)
         self.assertRaises(BufferError, a.frombytes, a.tobytes())
         self.assertEqual(m.tobytes(), expected)
-        if self.typecode == 'u':
+        if self.typecode in ('u', 'w'):
             self.assertRaises(BufferError, a.fromunicode, a.tounicode())
             self.assertEqual(m.tobytes(), expected)
         self.assertRaises(BufferError, operator.imul, a, 2)
@@ -1135,16 +1156,17 @@ def test_sizeof_without_buffer(self):
         support.check_sizeof(self, a, basesize)
 
     def test_initialize_with_unicode(self):
-        if self.typecode != 'u':
+        if self.typecode not in ('u', 'w'):
             with self.assertRaises(TypeError) as cm:
                 a = array.array(self.typecode, 'foo')
             self.assertIn("cannot use a str", str(cm.exception))
             with self.assertRaises(TypeError) as cm:
-                a = array.array(self.typecode, array.array('u', 'foo'))
+                a = array.array(self.typecode, array.array('w', 'foo'))
             self.assertIn("cannot use a unicode array", str(cm.exception))
         else:
             a = array.array(self.typecode, "foo")
             a = array.array(self.typecode, array.array('u', 'foo'))
+            a = array.array(self.typecode, array.array('w', 'foo'))
 
     @support.cpython_only
     def test_obsolete_write_lock(self):
@@ -1171,40 +1193,51 @@ class UnicodeTest(StringTest, unittest.TestCase):
     smallerexample = '\x01\u263a\x00\ufefe'
     biggerexample = '\x01\u263a\x01\ufeff'
     outside = str('\x33')
-    minitemsize = 2
+    minitemsize = sizeof_wchar
 
     def test_unicode(self):
         self.assertRaises(TypeError, array.array, 'b', 'foo')
 
-        a = array.array('u', '\xa0\xc2\u1234')
+        a = array.array(self.typecode, '\xa0\xc2\u1234')
         a.fromunicode(' ')
         a.fromunicode('')
         a.fromunicode('')
         a.fromunicode('\x11abc\xff\u1234')
         s = a.tounicode()
         self.assertEqual(s, '\xa0\xc2\u1234 \x11abc\xff\u1234')
-        self.assertEqual(a.itemsize, sizeof_wchar)
+        self.assertEqual(a.itemsize, self.minitemsize)
 
         s = '\x00="\'a\\b\x80\xff\u0000\u0001\u1234'
-        a = array.array('u', s)
+        a = array.array(self.typecode, s)
         self.assertEqual(
             repr(a),
-            "array('u', '\\x00=\"\\'a\\\\b\\x80\xff\\x00\\x01\u1234')")
+            f"array('{self.typecode}', '\\x00=\"\\'a\\\\b\\x80\xff\\x00\\x01\u1234')")
 
         self.assertRaises(TypeError, a.fromunicode)
 
     def test_issue17223(self):
-        # this used to crash
-        if sizeof_wchar == 4:
-            # U+FFFFFFFF is an invalid code point in Unicode 6.0
-            invalid_str = b'\xff\xff\xff\xff'
-        else:
+        if self.typecode == 'u' and sizeof_wchar == 2:
             # PyUnicode_FromUnicode() cannot fail with 16-bit wchar_t
             self.skipTest("specific to 32-bit wchar_t")
-        a = array.array('u', invalid_str)
+
+        # this used to crash
+        # U+FFFFFFFF is an invalid code point in Unicode 6.0
+        invalid_str = b'\xff\xff\xff\xff'
+
+        a = array.array(self.typecode, invalid_str)
         self.assertRaises(ValueError, a.tounicode)
         self.assertRaises(ValueError, str, a)
 
+    def test_typecode_u_deprecation(self):
+        with self.assertWarns(DeprecationWarning):
+            array.array("u")
+
+
+class UCS4Test(UnicodeTest):
+    typecode = 'w'
+    minitemsize = 4
+
+
 class NumberTest(BaseTest):
 
     def test_extslice(self):
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index fdd21aca06ffdd..64fcb02309de77 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -3,13 +3,19 @@
 import dis
 import enum
 import os
+import re
 import sys
+import textwrap
 import types
 import unittest
 import warnings
 import weakref
 from functools import partial
 from textwrap import dedent
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = None
 
 from test import support
 from test.support.import_helper import import_fresh_module
@@ -98,6 +104,8 @@ def to_tuple(t):
     # With
     "with x as y: pass",
     "with x as y, z as q: pass",
+    "with (x as y): pass",
+    "with (x, y): pass",
     # Raise
     "raise Exception('string')",
     # TryExcept
@@ -181,7 +189,22 @@ def to_tuple(t):
     "def f(a=1, /, b=2, *, c): pass",
     "def f(a=1, /, b=2, *, c=4, **kwargs): pass",
     "def f(a=1, /, b=2, *, c, **kwargs): pass",
-
+    # Type aliases
+    "type X = int",
+    "type X[T] = int",
+    "type X[T, *Ts, **P] = (T, Ts, P)",
+    "type X[T: int, *Ts, **P] = (T, Ts, P)",
+    "type X[T: (int, str), *Ts, **P] = (T, Ts, P)",
+    # Generic classes
+    "class X[T]: pass",
+    "class X[T, *Ts, **P]: pass",
+    "class X[T: int, *Ts, **P]: pass",
+    "class X[T: (int, str), *Ts, **P]: pass",
+    # Generic functions
+    "def f[T](): pass",
+    "def f[T, *Ts, **P](): pass",
+    "def f[T: int, *Ts, **P](): pass",
+    "def f[T: (int, str), *Ts, **P](): pass",
 ]
 
 # These are compiled through "single"
@@ -262,7 +285,6 @@ def to_tuple(t):
   "()",
   # Combination
   "a.b.c.d(a.b[1:2])",
-
 ]
 
 # TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension
@@ -341,6 +363,38 @@ def test_ast_validation(self):
             tree = ast.parse(snippet)
             compile(tree, '<string>', 'exec')
 
+    def test_optimization_levels__debug__(self):
+        cases = [(-1, '__debug__'), (0, '__debug__'), (1, False), (2, False)]
+        for (optval, expected) in cases:
+            with self.subTest(optval=optval, expected=expected):
+                res1 = ast.parse("__debug__", optimize=optval)
+                res2 = ast.parse(ast.parse("__debug__"), optimize=optval)
+                for res in [res1, res2]:
+                    self.assertIsInstance(res.body[0], ast.Expr)
+                    if isinstance(expected, bool):
+                        self.assertIsInstance(res.body[0].value, ast.Constant)
+                        self.assertEqual(res.body[0].value.value, expected)
+                    else:
+                        self.assertIsInstance(res.body[0].value, ast.Name)
+                        self.assertEqual(res.body[0].value.id, expected)
+
+    def test_optimization_levels_const_folding(self):
+        folded = ('Expr', (1, 0, 1, 5), ('Constant', (1, 0, 1, 5), 3, None))
+        not_folded = ('Expr', (1, 0, 1, 5),
+                         ('BinOp', (1, 0, 1, 5),
+                             ('Constant', (1, 0, 1, 1), 1, None),
+                             ('Add',),
+                             ('Constant', (1, 4, 1, 5), 2, None)))
+
+        cases = [(-1, not_folded), (0, not_folded), (1, folded), (2, folded)]
+        for (optval, expected) in cases:
+            with self.subTest(optval=optval):
+                tree1 = ast.parse("1 + 2", optimize=optval)
+                tree2 = ast.parse(ast.parse("1 + 2"), optimize=optval)
+                for tree in [tree1, tree2]:
+                    res = to_tuple(tree.body[0])
+                    self.assertEqual(res, expected)
+
     def test_invalid_position_information(self):
         invalid_linenos = [
             (10, 1), (-10, -11), (10, -11), (-5, -2), (-5, 1)
@@ -1013,6 +1067,18 @@ def test_exception_groups_feature_version(self):
         with self.assertRaises(SyntaxError):
             ast.parse(code, feature_version=(3, 10))
 
+    def test_type_params_feature_version(self):
+        samples = [
+            "type X = int",
+            "class X[T]: pass",
+            "def f[T](): pass",
+        ]
+        for sample in samples:
+            with self.subTest(sample):
+                ast.parse(sample)
+                with self.assertRaises(SyntaxError):
+                    ast.parse(sample, feature_version=(3, 11))
+
     def test_invalid_major_feature_version(self):
         with self.assertRaises(ValueError):
             ast.parse('pass', feature_version=(2, 7))
@@ -1061,6 +1127,9 @@ def test_ast_recursion_limit(self):
         fail_depth = support.EXCEEDS_RECURSION_LIMIT
         crash_depth = 100_000
         success_depth = 1200
+        if _testinternalcapi is not None:
+            remaining = _testinternalcapi.get_c_recursion_remaining()
+            success_depth = min(success_depth, remaining)
 
         def check_limit(prefix, repeated):
             expect_ok = prefix + repeated * success_depth
@@ -1083,6 +1152,32 @@ def test_null_bytes(self):
             msg="source code string cannot contain null bytes"):
             ast.parse("a\0b")
 
+    def assert_none_check(self, node: type[ast.AST], attr: str, source: str) -> None:
+        with self.subTest(f"{node.__name__}.{attr}"):
+            tree = ast.parse(source)
+            found = 0
+            for child in ast.walk(tree):
+                if isinstance(child, node):
+                    setattr(child, attr, None)
+                    found += 1
+            self.assertEqual(found, 1)
+            e = re.escape(f"field '{attr}' is required for {node.__name__}")
+            with self.assertRaisesRegex(ValueError, f"^{e}$"):
+                compile(tree, "<test>", "exec")
+
+    def test_none_checks(self) -> None:
+        tests = [
+            (ast.alias, "name", "import spam as SPAM"),
+            (ast.arg, "arg", "def spam(SPAM): spam"),
+            (ast.comprehension, "target", "[spam for SPAM in spam]"),
+            (ast.comprehension, "iter", "[spam for spam in SPAM]"),
+            (ast.keyword, "value", "spam(**SPAM)"),
+            (ast.match_case, "pattern", "match spam:\n case SPAM: spam"),
+            (ast.withitem, "context_expr", "with SPAM: spam"),
+        ]
+        for node, attr, source in tests:
+            self.assert_none_check(node, attr, source)
+
 class ASTHelpers_Test(unittest.TestCase):
     maxDiff = None
 
@@ -1557,20 +1652,43 @@ def arguments(args=None, posonlyargs=None, vararg=None,
 
     def test_funcdef(self):
         a = ast.arguments([], [], None, [], [], None, [])
-        f = ast.FunctionDef("x", a, [], [], None)
+        f = ast.FunctionDef("x", a, [], [], None, None, [])
         self.stmt(f, "empty body on FunctionDef")
-        f = ast.FunctionDef("x", a, [ast.Pass()], [ast.Name("x", ast.Store())],
-                            None)
+        f = ast.FunctionDef("x", a, [ast.Pass()], [ast.Name("x", ast.Store())], None, None, [])
         self.stmt(f, "must have Load context")
         f = ast.FunctionDef("x", a, [ast.Pass()], [],
-                            ast.Name("x", ast.Store()))
+                            ast.Name("x", ast.Store()), None, [])
         self.stmt(f, "must have Load context")
+        f = ast.FunctionDef("x", ast.arguments(), [ast.Pass()])
+        self.stmt(f)
         def fac(args):
-            return ast.FunctionDef("x", args, [ast.Pass()], [], None)
+            return ast.FunctionDef("x", args, [ast.Pass()], [], None, None, [])
         self._check_arguments(fac, self.stmt)
 
+    def test_funcdef_pattern_matching(self):
+        # gh-104799: New fields on FunctionDef should be added at the end
+        def matcher(node):
+            match node:
+                case ast.FunctionDef("foo", ast.arguments(args=[ast.arg("bar")]),
+                                     [ast.Pass()],
+                                     [ast.Name("capybara", ast.Load())],
+                                     ast.Name("pacarana", ast.Load())):
+                    return True
+                case _:
+                    return False
+
+        code = """
+            @capybara
+            def foo(bar) -> pacarana:
+                pass
+        """
+        source = ast.parse(textwrap.dedent(code))
+        funcdef = source.body[0]
+        self.assertIsInstance(funcdef, ast.FunctionDef)
+        self.assertTrue(matcher(funcdef))
+
     def test_classdef(self):
-        def cls(bases=None, keywords=None, body=None, decorator_list=None):
+        def cls(bases=None, keywords=None, body=None, decorator_list=None, type_params=None):
             if bases is None:
                 bases = []
             if keywords is None:
@@ -1579,8 +1697,10 @@ def cls(bases=None, keywords=None, body=None, decorator_list=None):
                 body = [ast.Pass()]
             if decorator_list is None:
                 decorator_list = []
+            if type_params is None:
+                type_params = []
             return ast.ClassDef("myclass", bases, keywords,
-                                body, decorator_list)
+                                body, decorator_list, type_params)
         self.stmt(cls(bases=[ast.Name("x", ast.Store())]),
                   "must have Load context")
         self.stmt(cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
@@ -1919,6 +2039,7 @@ def test_nameconstant(self):
             'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
         ])
 
+    @support.requires_resource('cpu')
     def test_stdlib_validates(self):
         stdlib = os.path.dirname(ast.__file__)
         tests = [fn for fn in os.listdir(stdlib) if fn.endswith(".py")]
@@ -2035,6 +2156,12 @@ def test_stdlib_validates(self):
             kwd_attrs=[],
             kwd_patterns=[ast.MatchStar()]
         ),
+        ast.MatchClass(
+            constant_true,  # invalid name
+            patterns=[],
+            kwd_attrs=['True'],
+            kwd_patterns=[pattern_1]
+        ),
         ast.MatchSequence(
             [
                 ast.MatchStar("True")
@@ -2863,23 +2990,23 @@ def main():
 exec_results = [
 ('Module', [('Expr', (1, 0, 1, 4), ('Constant', (1, 0, 1, 4), None, None))], []),
 ('Module', [('Expr', (1, 0, 1, 18), ('Constant', (1, 0, 1, 18), 'module docstring', None))], []),
-('Module', [('FunctionDef', (1, 0, 1, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 9, 1, 13))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 29), 'f', ('arguments', [], [], None, [], [], None, []), [('Expr', (1, 9, 1, 29), ('Constant', (1, 9, 1, 29), 'function docstring', None))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 14), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, []), [('Pass', (1, 10, 1, 14))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, [('Constant', (1, 8, 1, 9), 0, None)]), [('Pass', (1, 12, 1, 16))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 18), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 11), 'args', None, None), [], [], None, []), [('Pass', (1, 14, 1, 18))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 23), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 16), 'args', ('Starred', (1, 13, 1, 16), ('Name', (1, 14, 1, 16), 'Ts', ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 19, 1, 23))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Constant', (1, 25, 1, 28), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Starred', (1, 25, 1, 28), ('Name', (1, 26, 1, 28), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 21), 'f', ('arguments', [], [], None, [], [], ('arg', (1, 8, 1, 14), 'kwargs', None, None), []), [('Pass', (1, 17, 1, 21))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 71), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None), ('arg', (1, 9, 1, 10), 'b', None, None), ('arg', (1, 14, 1, 15), 'c', None, None), ('arg', (1, 22, 1, 23), 'd', None, None), ('arg', (1, 28, 1, 29), 'e', None, None)], ('arg', (1, 35, 1, 39), 'args', None, None), [('arg', (1, 41, 1, 42), 'f', None, None)], [('Constant', (1, 43, 1, 45), 42, None)], ('arg', (1, 49, 1, 55), 'kwargs', None, None), [('Constant', (1, 11, 1, 12), 1, None), ('Constant', (1, 16, 1, 20), None, None), ('List', (1, 24, 1, 26), [], ('Load',)), ('Dict', (1, 30, 1, 32), [], [])]), [('Expr', (1, 58, 1, 71), ('Constant', (1, 58, 1, 71), 'doc for f()', None))], [], None, None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 27), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 23, 1, 27))], [], ('Subscript', (1, 11, 1, 21), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 20), [('Starred', (1, 17, 1, 20), ('Name', (1, 18, 1, 20), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 32), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 28, 1, 32))], [], ('Subscript', (1, 11, 1, 26), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 25), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 25), ('Name', (1, 23, 1, 25), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []),
-('Module', [('FunctionDef', (1, 0, 1, 45), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 41, 1, 45))], [], ('Subscript', (1, 11, 1, 39), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 38), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 38), ('Subscript', (1, 23, 1, 38), ('Name', (1, 23, 1, 28), 'tuple', ('Load',)), ('Tuple', (1, 29, 1, 37), [('Name', (1, 29, 1, 32), 'int', ('Load',)), ('Constant', (1, 34, 1, 37), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',))], ('Load',)), ('Load',)), None)], []),
-('Module', [('ClassDef', (1, 0, 1, 12), 'C', [], [], [('Pass', (1, 8, 1, 12))], [])], []),
-('Module', [('ClassDef', (1, 0, 1, 32), 'C', [], [], [('Expr', (1, 9, 1, 32), ('Constant', (1, 9, 1, 32), 'docstring for class C', None))], [])], []),
-('Module', [('ClassDef', (1, 0, 1, 21), 'C', [('Name', (1, 8, 1, 14), 'object', ('Load',))], [], [('Pass', (1, 17, 1, 21))], [])], []),
-('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [], None, [], [], None, []), [('Return', (1, 8, 1, 16), ('Constant', (1, 15, 1, 16), 1, None))], [], None, None)], []),
+('Module', [('FunctionDef', (1, 0, 1, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 9, 1, 13))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 29), 'f', ('arguments', [], [], None, [], [], None, []), [('Expr', (1, 9, 1, 29), ('Constant', (1, 9, 1, 29), 'function docstring', None))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 14), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, []), [('Pass', (1, 10, 1, 14))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, [('Constant', (1, 8, 1, 9), 0, None)]), [('Pass', (1, 12, 1, 16))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 18), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 11), 'args', None, None), [], [], None, []), [('Pass', (1, 14, 1, 18))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 23), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 16), 'args', ('Starred', (1, 13, 1, 16), ('Name', (1, 14, 1, 16), 'Ts', ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 19, 1, 23))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Constant', (1, 25, 1, 28), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Starred', (1, 25, 1, 28), ('Name', (1, 26, 1, 28), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 21), 'f', ('arguments', [], [], None, [], [], ('arg', (1, 8, 1, 14), 'kwargs', None, None), []), [('Pass', (1, 17, 1, 21))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 71), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None), ('arg', (1, 9, 1, 10), 'b', None, None), ('arg', (1, 14, 1, 15), 'c', None, None), ('arg', (1, 22, 1, 23), 'd', None, None), ('arg', (1, 28, 1, 29), 'e', None, None)], ('arg', (1, 35, 1, 39), 'args', None, None), [('arg', (1, 41, 1, 42), 'f', None, None)], [('Constant', (1, 43, 1, 45), 42, None)], ('arg', (1, 49, 1, 55), 'kwargs', None, None), [('Constant', (1, 11, 1, 12), 1, None), ('Constant', (1, 16, 1, 20), None, None), ('List', (1, 24, 1, 26), [], ('Load',)), ('Dict', (1, 30, 1, 32), [], [])]), [('Expr', (1, 58, 1, 71), ('Constant', (1, 58, 1, 71), 'doc for f()', None))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 27), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 23, 1, 27))], [], ('Subscript', (1, 11, 1, 21), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 20), [('Starred', (1, 17, 1, 20), ('Name', (1, 18, 1, 20), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 32), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 28, 1, 32))], [], ('Subscript', (1, 11, 1, 26), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 25), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 25), ('Name', (1, 23, 1, 25), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 45), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 41, 1, 45))], [], ('Subscript', (1, 11, 1, 39), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 38), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 38), ('Subscript', (1, 23, 1, 38), ('Name', (1, 23, 1, 28), 'tuple', ('Load',)), ('Tuple', (1, 29, 1, 37), [('Name', (1, 29, 1, 32), 'int', ('Load',)), ('Constant', (1, 34, 1, 37), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
+('Module', [('ClassDef', (1, 0, 1, 12), 'C', [], [], [('Pass', (1, 8, 1, 12))], [], [])], []),
+('Module', [('ClassDef', (1, 0, 1, 32), 'C', [], [], [('Expr', (1, 9, 1, 32), ('Constant', (1, 9, 1, 32), 'docstring for class C', None))], [], [])], []),
+('Module', [('ClassDef', (1, 0, 1, 21), 'C', [('Name', (1, 8, 1, 14), 'object', ('Load',))], [], [('Pass', (1, 17, 1, 21))], [], [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [], None, [], [], None, []), [('Return', (1, 8, 1, 16), ('Constant', (1, 15, 1, 16), 1, None))], [], None, None, [])], []),
 ('Module', [('Delete', (1, 0, 1, 5), [('Name', (1, 4, 1, 5), 'v', ('Del',))])], []),
 ('Module', [('Assign', (1, 0, 1, 5), [('Name', (1, 0, 1, 1), 'v', ('Store',))], ('Constant', (1, 4, 1, 5), 1, None), None)], []),
 ('Module', [('Assign', (1, 0, 1, 7), [('Tuple', (1, 0, 1, 3), [('Name', (1, 0, 1, 1), 'a', ('Store',)), ('Name', (1, 2, 1, 3), 'b', ('Store',))], ('Store',))], ('Name', (1, 6, 1, 7), 'c', ('Load',)), None)], []),
@@ -2896,6 +3023,8 @@ def main():
 ('Module', [('If', (1, 0, 6, 6), ('Name', (1, 3, 1, 4), 'a', ('Load',)), [('Pass', (2, 2, 2, 6))], [('If', (3, 0, 6, 6), ('Name', (3, 5, 3, 6), 'b', ('Load',)), [('Pass', (4, 2, 4, 6))], [('Pass', (6, 2, 6, 6))])])], []),
 ('Module', [('With', (1, 0, 1, 17), [('withitem', ('Name', (1, 5, 1, 6), 'x', ('Load',)), ('Name', (1, 10, 1, 11), 'y', ('Store',)))], [('Pass', (1, 13, 1, 17))], None)], []),
 ('Module', [('With', (1, 0, 1, 25), [('withitem', ('Name', (1, 5, 1, 6), 'x', ('Load',)), ('Name', (1, 10, 1, 11), 'y', ('Store',))), ('withitem', ('Name', (1, 13, 1, 14), 'z', ('Load',)), ('Name', (1, 18, 1, 19), 'q', ('Store',)))], [('Pass', (1, 21, 1, 25))], None)], []),
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+('Module', [('With', (1, 0, 1, 17), [('withitem', ('Name', (1, 6, 1, 7), 'x', ('Load',)), None), ('withitem', ('Name', (1, 9, 1, 10), 'y', ('Load',)), None)], [('Pass', (1, 13, 1, 17))], None)], []),
 ('Module', [('Raise', (1, 0, 1, 25), ('Call', (1, 6, 1, 25), ('Name', (1, 6, 1, 15), 'Exception', ('Load',)), [('Constant', (1, 16, 1, 24), 'string', None)], []), None)], []),
 ('Module', [('Try', (1, 0, 4, 6), [('Pass', (2, 2, 2, 6))], [('ExceptHandler', (3, 0, 4, 6), ('Name', (3, 7, 3, 16), 'Exception', ('Load',)), None, [('Pass', (4, 2, 4, 6))])], [], [])], []),
 ('Module', [('Try', (1, 0, 4, 6), [('Pass', (2, 2, 2, 6))], [], [], [('Pass', (4, 2, 4, 6))])], []),
@@ -2916,28 +3045,41 @@ def main():
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+('Module', [('ClassDef', (1, 0, 1, 26), 'X', [], [], [('Pass', (1, 22, 1, 26))], [], [('TypeVar', (1, 8, 1, 9), 'T', None), ('TypeVarTuple', (1, 11, 1, 14), 'Ts'), ('ParamSpec', (1, 16, 1, 19), 'P')])], []),
+('Module', [('ClassDef', (1, 0, 1, 31), 'X', [], [], [('Pass', (1, 27, 1, 31))], [], [('TypeVar', (1, 8, 1, 14), 'T', ('Name', (1, 11, 1, 14), 'int', ('Load',))), ('TypeVarTuple', (1, 16, 1, 19), 'Ts'), ('ParamSpec', (1, 21, 1, 24), 'P')])], []),
+('Module', [('ClassDef', (1, 0, 1, 38), 'X', [], [], [('Pass', (1, 34, 1, 38))], [], [('TypeVar', (1, 8, 1, 21), 'T', ('Tuple', (1, 11, 1, 21), [('Name', (1, 12, 1, 15), 'int', ('Load',)), ('Name', (1, 17, 1, 20), 'str', ('Load',))], ('Load',))), ('TypeVarTuple', (1, 23, 1, 26), 'Ts'), ('ParamSpec', (1, 28, 1, 31), 'P')])], []),
+('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 12, 1, 16))], [], None, None, [('TypeVar', (1, 6, 1, 7), 'T', None)])], []),
+('Module', [('FunctionDef', (1, 0, 1, 26), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 22, 1, 26))], [], None, None, [('TypeVar', (1, 6, 1, 7), 'T', None), ('TypeVarTuple', (1, 9, 1, 12), 'Ts'), ('ParamSpec', (1, 14, 1, 17), 'P')])], []),
+('Module', [('FunctionDef', (1, 0, 1, 31), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 27, 1, 31))], [], None, None, [('TypeVar', (1, 6, 1, 12), 'T', ('Name', (1, 9, 1, 12), 'int', ('Load',))), ('TypeVarTuple', (1, 14, 1, 17), 'Ts'), ('ParamSpec', (1, 19, 1, 22), 'P')])], []),
+('Module', [('FunctionDef', (1, 0, 1, 38), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 34, 1, 38))], [], None, None, [('TypeVar', (1, 6, 1, 19), 'T', ('Tuple', (1, 9, 1, 19), [('Name', (1, 10, 1, 13), 'int', ('Load',)), ('Name', (1, 15, 1, 18), 'str', ('Load',))], ('Load',))), ('TypeVarTuple', (1, 21, 1, 24), 'Ts'), ('ParamSpec', (1, 26, 1, 29), 'P')])], []),
 ]
 single_results = [
 ('Interactive', [('Expr', (1, 0, 1, 3), ('BinOp', (1, 0, 1, 3), ('Constant', (1, 0, 1, 1), 1, None), ('Add',), ('Constant', (1, 2, 1, 3), 2, None)))]),
diff --git a/Lib/test/test_asyncgen.py b/Lib/test/test_asyncgen.py
index 09e4010b0e53d6..a49630112af510 100644
--- a/Lib/test/test_asyncgen.py
+++ b/Lib/test/test_asyncgen.py
@@ -415,8 +415,9 @@ async def gen():
         self.assertIsInstance(g.ag_frame, types.FrameType)
         self.assertFalse(g.ag_running)
         self.assertIsInstance(g.ag_code, types.CodeType)
-
-        self.assertTrue(inspect.isawaitable(g.aclose()))
+        aclose = g.aclose()
+        self.assertTrue(inspect.isawaitable(aclose))
+        aclose.close()
 
 
 class AsyncGenAsyncioTest(unittest.TestCase):
@@ -1057,8 +1058,7 @@ async def gen():
                 while True:
                     yield 1
             finally:
-                await asyncio.sleep(0.01)
-                await asyncio.sleep(0.01)
+                await asyncio.sleep(0)
                 DONE = 1
 
         async def run():
@@ -1068,7 +1068,10 @@ async def run():
             del g
             gc_collect()  # For PyPy or other GCs.
 
-            await asyncio.sleep(0.1)
+            # Starts running the aclose task
+            await asyncio.sleep(0)
+            # For asyncio.sleep(0) in finally block
+            await asyncio.sleep(0)
 
         self.loop.run_until_complete(run())
         self.assertEqual(DONE, 1)
@@ -1693,5 +1696,38 @@ async def run():
         self.loop.run_until_complete(run())
 
 
+class TestUnawaitedWarnings(unittest.TestCase):
+    def test_asend(self):
+        async def gen():
+            yield 1
+
+        msg = f"coroutine method 'asend' of '{gen.__qualname__}' was never awaited"
+        with self.assertWarnsRegex(RuntimeWarning, msg):
+            g = gen()
+            g.asend(None)
+            gc_collect()
+
+    def test_athrow(self):
+        async def gen():
+            yield 1
+
+        msg = f"coroutine method 'athrow' of '{gen.__qualname__}' was never awaited"
+        with self.assertWarnsRegex(RuntimeWarning, msg):
+            g = gen()
+            g.athrow(RuntimeError)
+            gc_collect()
+
+    def test_aclose(self):
+        async def gen():
+            yield 1
+
+        msg = f"coroutine method 'aclose' of '{gen.__qualname__}' was never awaited"
+        with self.assertWarnsRegex(RuntimeWarning, msg):
+            g = gen()
+            g.aclose()
+            gc_collect()
+
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_base_events.py b/Lib/test/test_asyncio/test_base_events.py
index 3b4026cb73869a..c2080977e9d587 100644
--- a/Lib/test/test_asyncio/test_base_events.py
+++ b/Lib/test/test_asyncio/test_base_events.py
@@ -273,7 +273,7 @@ def cb():
             self.loop.stop()
 
         self.loop._process_events = mock.Mock()
-        delay = 0.1
+        delay = 0.100
 
         when = self.loop.time() + delay
         self.loop.call_at(when, cb)
@@ -282,10 +282,7 @@ def cb():
         dt = self.loop.time() - t0
 
         # 50 ms: maximum granularity of the event loop
-        self.assertGreaterEqual(dt, delay - 0.050, dt)
-        # tolerate a difference of +800 ms because some Python buildbots
-        # are really slow
-        self.assertLessEqual(dt, 0.9, dt)
+        self.assertGreaterEqual(dt, delay - test_utils.CLOCK_RES)
         with self.assertRaises(TypeError, msg="when cannot be None"):
             self.loop.call_at(None, cb)
 
@@ -925,6 +922,43 @@ def test_run_forever_pre_stopped(self):
         self.loop.run_forever()
         self.loop._selector.select.assert_called_once_with(0)
 
+    def test_custom_run_forever_integration(self):
+        # Test that the run_forever_setup() and run_forever_cleanup() primitives
+        # can be used to implement a custom run_forever loop.
+        self.loop._process_events = mock.Mock()
+
+        count = 0
+
+        def callback():
+            nonlocal count
+            count += 1
+
+        self.loop.call_soon(callback)
+
+        # Set up the custom event loop
+        self.loop._run_forever_setup()
+
+        # Confirm the loop has been started
+        self.assertEqual(asyncio.get_running_loop(), self.loop)
+        self.assertTrue(self.loop.is_running())
+
+        # Our custom "event loop" just iterates 10 times before exiting.
+        for i in range(10):
+            self.loop._run_once()
+
+        # Clean up the event loop
+        self.loop._run_forever_cleanup()
+
+        # Confirm the loop has been cleaned up
+        with self.assertRaises(RuntimeError):
+            asyncio.get_running_loop()
+        self.assertFalse(self.loop.is_running())
+
+        # Confirm the loop actually did run, processing events 10 times,
+        # and invoking the callback once.
+        self.assertEqual(self.loop._process_events.call_count, 10)
+        self.assertEqual(count, 1)
+
     async def leave_unfinalized_asyncgen(self):
         # Create an async generator, iterate it partially, and leave it
         # to be garbage collected.
diff --git a/Lib/test/test_asyncio/test_eager_task_factory.py b/Lib/test/test_asyncio/test_eager_task_factory.py
index fe690934292a86..0f8212dbec47be 100644
--- a/Lib/test/test_asyncio/test_eager_task_factory.py
+++ b/Lib/test/test_asyncio/test_eager_task_factory.py
@@ -2,17 +2,12 @@
 
 import asyncio
 import contextvars
-import gc
-import time
 import unittest
 
-from types import GenericAlias
 from unittest import mock
-from asyncio import base_events
 from asyncio import tasks
 from test.test_asyncio import utils as test_utils
-from test.test_asyncio.test_tasks import get_innermost_context
-from test import support
+from test.support.script_helper import assert_python_ok
 
 MOCK_ANY = mock.ANY
 
@@ -228,6 +223,23 @@ class PyEagerTaskFactoryLoopTests(EagerTaskFactoryLoopTests, test_utils.TestCase
 class CEagerTaskFactoryLoopTests(EagerTaskFactoryLoopTests, test_utils.TestCase):
     Task = getattr(tasks, '_CTask', None)
 
+    def test_issue105987(self):
+        code = """if 1:
+        from _asyncio import _swap_current_task
+
+        class DummyTask:
+            pass
+
+        class DummyLoop:
+            pass
+
+        l = DummyLoop()
+        _swap_current_task(l, DummyTask())
+        t = _swap_current_task(l, None)
+        """
+
+        _, out, err = assert_python_ok("-c", code)
+        self.assertFalse(err)
 
 class AsyncTaskCounter:
     def __init__(self, loop, *, task_class, eager):
diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
index b9069056c3a436..b25c0975736e20 100644
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -1,6 +1,5 @@
 """Tests for events.py."""
 
-import collections.abc
 import concurrent.futures
 import functools
 import io
@@ -31,6 +30,7 @@
 from asyncio import coroutines
 from asyncio import events
 from asyncio import selector_events
+from multiprocessing.util import _cleanup_tests as multiprocessing_cleanup_tests
 from test.test_asyncio import utils as test_utils
 from test import support
 from test.support import socket_helper
@@ -293,10 +293,11 @@ async def coro2():
     # 15.6 msec, we use fairly long sleep times here (~100 msec).
 
     def test_run_until_complete(self):
+        delay = 0.100
         t0 = self.loop.time()
-        self.loop.run_until_complete(asyncio.sleep(0.1))
-        t1 = self.loop.time()
-        self.assertTrue(0.08 <= t1-t0 <= 0.8, t1-t0)
+        self.loop.run_until_complete(asyncio.sleep(delay))
+        dt = self.loop.time() - t0
+        self.assertGreaterEqual(dt, delay - test_utils.CLOCK_RES)
 
     def test_run_until_complete_stopped(self):
 
@@ -671,6 +672,7 @@ def test_create_connection_local_addr(self):
             self.assertEqual(port, expected)
             tr.close()
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_create_connection_local_addr_skip_different_family(self):
         # See https://github.com/python/cpython/issues/86508
         port1 = socket_helper.find_unused_port()
@@ -692,6 +694,7 @@ async def getaddrinfo(host, port, *args, **kwargs):
         with self.assertRaises(OSError):
             self.loop.run_until_complete(f)
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_create_connection_local_addr_nomatch_family(self):
         # See https://github.com/python/cpython/issues/86508
         port1 = socket_helper.find_unused_port()
@@ -1271,6 +1274,7 @@ def connection_made(self, transport):
 
         server.close()
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_server_close(self):
         f = self.loop.create_server(MyProto, '0.0.0.0', 0)
         server = self.loop.run_until_complete(f)
@@ -1689,12 +1693,9 @@ async def main():
                 self.loop.stop()
             return res
 
-        start = time.monotonic()
         t = self.loop.create_task(main())
         self.loop.run_forever()
-        elapsed = time.monotonic() - start
 
-        self.assertLess(elapsed, 0.1)
         self.assertEqual(t.result(), 'cancelled')
         self.assertRaises(asyncio.CancelledError, f.result)
         if ov is not None:
@@ -1714,7 +1715,6 @@ def _run_once():
         self.loop._run_once = _run_once
 
         async def wait():
-            loop = self.loop
             await asyncio.sleep(1e-2)
             await asyncio.sleep(1e-4)
             await asyncio.sleep(1e-6)
@@ -2331,8 +2331,6 @@ def check_source_traceback(h):
         h = loop.call_later(0, noop)
         check_source_traceback(h)
 
-    @unittest.skipUnless(hasattr(collections.abc, 'Coroutine'),
-                         'No collections.abc.Coroutine')
     def test_coroutine_like_object_debug_formatting(self):
         # Test that asyncio can format coroutines that are instances of
         # collections.abc.Coroutine, but lack cr_core or gi_code attributes
@@ -2762,6 +2760,8 @@ def test_get_event_loop_new_process(self):
             # multiprocessing.synchronize module cannot be imported.
             support.skip_if_broken_multiprocessing_synchronize()
 
+            self.addCleanup(multiprocessing_cleanup_tests)
+
             async def main():
                 if multiprocessing.get_start_method() == 'fork':
                     # Avoid 'fork' DeprecationWarning.
diff --git a/Lib/test/test_asyncio/test_runners.py b/Lib/test/test_asyncio/test_runners.py
index 811cf8b72488b8..13493d3c806d6a 100644
--- a/Lib/test/test_asyncio/test_runners.py
+++ b/Lib/test/test_asyncio/test_runners.py
@@ -3,6 +3,7 @@
 import contextvars
 import re
 import signal
+import sys
 import threading
 import unittest
 from test.test_asyncio import utils as test_utils
@@ -101,11 +102,14 @@ async def main(expected):
             loop = asyncio.get_event_loop()
             self.assertIs(loop.get_debug(), expected)
 
-        asyncio.run(main(False))
+        asyncio.run(main(False), debug=False)
         asyncio.run(main(True), debug=True)
         with mock.patch('asyncio.coroutines._is_debug_mode', lambda: True):
             asyncio.run(main(True))
             asyncio.run(main(False), debug=False)
+        with mock.patch('asyncio.coroutines._is_debug_mode', lambda: False):
+            asyncio.run(main(True), debug=True)
+            asyncio.run(main(False))
 
     def test_asyncio_run_from_running_loop(self):
         async def main():
@@ -243,6 +247,8 @@ def exception(self, *args, **kwargs):
             def get_loop(self, *args, **kwargs):
                 return self._task.get_loop(*args, **kwargs)
 
+            def set_name(self, *args, **kwargs):
+                return self._task.set_name(*args, **kwargs)
 
         async def main():
             interrupt_self()
@@ -267,6 +273,16 @@ async def main():
         asyncio.run(main(), loop_factory=factory)
         factory.assert_called_once_with()
 
+    def test_loop_factory_default_event_loop(self):
+        async def main():
+            if sys.platform == "win32":
+                self.assertIsInstance(asyncio.get_running_loop(), asyncio.ProactorEventLoop)
+            else:
+                self.assertIsInstance(asyncio.get_running_loop(), asyncio.SelectorEventLoop)
+
+
+        asyncio.run(main(), loop_factory=asyncio.EventLoop)
+
 
 class RunnerTests(BaseTest):
 
diff --git a/Lib/test/test_asyncio/test_selector_events.py b/Lib/test/test_asyncio/test_selector_events.py
index 47693ea4d3ce2e..c22b780b5edcb8 100644
--- a/Lib/test/test_asyncio/test_selector_events.py
+++ b/Lib/test/test_asyncio/test_selector_events.py
@@ -178,7 +178,7 @@ def test_sock_connect_resolve_using_socket_params(self, m_gai):
                 sock.connect.assert_called_with(('127.0.0.1', 0))
 
     def test_add_reader(self):
-        self.loop._selector.get_key.side_effect = KeyError
+        self.loop._selector.get_map.return_value = {}
         cb = lambda: True
         self.loop.add_reader(1, cb)
 
@@ -192,8 +192,8 @@ def test_add_reader(self):
     def test_add_reader_existing(self):
         reader = mock.Mock()
         writer = mock.Mock()
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
-            1, 1, selectors.EVENT_WRITE, (reader, writer))
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
+            1, 1, selectors.EVENT_WRITE, (reader, writer))}
         cb = lambda: True
         self.loop.add_reader(1, cb)
 
@@ -208,8 +208,8 @@ def test_add_reader_existing(self):
 
     def test_add_reader_existing_writer(self):
         writer = mock.Mock()
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
-            1, 1, selectors.EVENT_WRITE, (None, writer))
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
+            1, 1, selectors.EVENT_WRITE, (None, writer))}
         cb = lambda: True
         self.loop.add_reader(1, cb)
 
@@ -222,8 +222,8 @@ def test_add_reader_existing_writer(self):
         self.assertEqual(writer, w)
 
     def test_remove_reader(self):
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
-            1, 1, selectors.EVENT_READ, (None, None))
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
+            1, 1, selectors.EVENT_READ, (None, None))}
         self.assertFalse(self.loop.remove_reader(1))
 
         self.assertTrue(self.loop._selector.unregister.called)
@@ -231,9 +231,9 @@ def test_remove_reader(self):
     def test_remove_reader_read_write(self):
         reader = mock.Mock()
         writer = mock.Mock()
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
             1, 1, selectors.EVENT_READ | selectors.EVENT_WRITE,
-            (reader, writer))
+            (reader, writer))}
         self.assertTrue(
             self.loop.remove_reader(1))
 
@@ -243,12 +243,12 @@ def test_remove_reader_read_write(self):
             self.loop._selector.modify.call_args[0])
 
     def test_remove_reader_unknown(self):
-        self.loop._selector.get_key.side_effect = KeyError
+        self.loop._selector.get_map.return_value = {}
         self.assertFalse(
             self.loop.remove_reader(1))
 
     def test_add_writer(self):
-        self.loop._selector.get_key.side_effect = KeyError
+        self.loop._selector.get_map.return_value = {}
         cb = lambda: True
         self.loop.add_writer(1, cb)
 
@@ -262,8 +262,8 @@ def test_add_writer(self):
     def test_add_writer_existing(self):
         reader = mock.Mock()
         writer = mock.Mock()
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
-            1, 1, selectors.EVENT_READ, (reader, writer))
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
+            1, 1, selectors.EVENT_READ, (reader, writer))}
         cb = lambda: True
         self.loop.add_writer(1, cb)
 
@@ -277,8 +277,8 @@ def test_add_writer_existing(self):
         self.assertEqual(cb, w._callback)
 
     def test_remove_writer(self):
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
-            1, 1, selectors.EVENT_WRITE, (None, None))
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
+            1, 1, selectors.EVENT_WRITE, (None, None))}
         self.assertFalse(self.loop.remove_writer(1))
 
         self.assertTrue(self.loop._selector.unregister.called)
@@ -286,9 +286,9 @@ def test_remove_writer(self):
     def test_remove_writer_read_write(self):
         reader = mock.Mock()
         writer = mock.Mock()
-        self.loop._selector.get_key.return_value = selectors.SelectorKey(
+        self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
             1, 1, selectors.EVENT_READ | selectors.EVENT_WRITE,
-            (reader, writer))
+            (reader, writer))}
         self.assertTrue(
             self.loop.remove_writer(1))
 
@@ -298,7 +298,7 @@ def test_remove_writer_read_write(self):
             self.loop._selector.modify.call_args[0])
 
     def test_remove_writer_unknown(self):
-        self.loop._selector.get_key.side_effect = KeyError
+        self.loop._selector.get_map.return_value = {}
         self.assertFalse(
             self.loop.remove_writer(1))
 
diff --git a/Lib/test/test_asyncio/test_sendfile.py b/Lib/test/test_asyncio/test_sendfile.py
index 0198da21d77028..d33ff197bbfa1d 100644
--- a/Lib/test/test_asyncio/test_sendfile.py
+++ b/Lib/test/test_asyncio/test_sendfile.py
@@ -470,8 +470,11 @@ def test_sendfile_close_peer_in_the_middle_of_receiving(self):
 
         self.assertTrue(1024 <= srv_proto.nbytes < len(self.DATA),
                         srv_proto.nbytes)
-        self.assertTrue(1024 <= self.file.tell() < len(self.DATA),
-                        self.file.tell())
+        if not (sys.platform == 'win32'
+                and isinstance(self.loop, asyncio.ProactorEventLoop)):
+            # On Windows, Proactor uses transmitFile, which does not update tell()
+            self.assertTrue(1024 <= self.file.tell() < len(self.DATA),
+                            self.file.tell())
         self.assertTrue(cli_proto.transport.is_closing())
 
     def test_sendfile_fallback_close_peer_in_the_middle_of_receiving(self):
diff --git a/Lib/test/test_asyncio/test_server.py b/Lib/test/test_asyncio/test_server.py
index 06d8b60f219f1a..f22cf3026e244b 100644
--- a/Lib/test/test_asyncio/test_server.py
+++ b/Lib/test/test_asyncio/test_server.py
@@ -1,4 +1,6 @@
 import asyncio
+import os
+import socket
 import time
 import threading
 import unittest
@@ -122,29 +124,133 @@ async def main(srv):
 
 class TestServer2(unittest.IsolatedAsyncioTestCase):
 
-    async def test_wait_closed(self):
+    async def test_wait_closed_basic(self):
         async def serve(*args):
             pass
 
         srv = await asyncio.start_server(serve, socket_helper.HOSTv4, 0)
+        self.addCleanup(srv.close)
 
-        # active count = 0
+        # active count = 0, not closed: should block
         task1 = asyncio.create_task(srv.wait_closed())
         await asyncio.sleep(0)
-        self.assertTrue(task1.done())
+        self.assertFalse(task1.done())
 
-        # active count != 0
+        # active count != 0, not closed: should block
         srv._attach()
         task2 = asyncio.create_task(srv.wait_closed())
         await asyncio.sleep(0)
+        self.assertFalse(task1.done())
         self.assertFalse(task2.done())
 
         srv.close()
         await asyncio.sleep(0)
+        # active count != 0, closed: should block
+        task3 = asyncio.create_task(srv.wait_closed())
+        await asyncio.sleep(0)
+        self.assertFalse(task1.done())
         self.assertFalse(task2.done())
+        self.assertFalse(task3.done())
 
         srv._detach()
+        # active count == 0, closed: should unblock
+        await task1
         await task2
+        await task3
+        await srv.wait_closed()  # Return immediately
+
+    async def test_wait_closed_race(self):
+        # Test a regression in 3.12.0, should be fixed in 3.12.1
+        async def serve(*args):
+            pass
+
+        srv = await asyncio.start_server(serve, socket_helper.HOSTv4, 0)
+        self.addCleanup(srv.close)
+
+        task = asyncio.create_task(srv.wait_closed())
+        await asyncio.sleep(0)
+        self.assertFalse(task.done())
+        srv._attach()
+        loop = asyncio.get_running_loop()
+        loop.call_soon(srv.close)
+        loop.call_soon(srv._detach)
+        await srv.wait_closed()
+
+
+
+
+# Test the various corner cases of Unix server socket removal
+class UnixServerCleanupTests(unittest.IsolatedAsyncioTestCase):
+    @socket_helper.skip_unless_bind_unix_socket
+    async def test_unix_server_addr_cleanup(self):
+        # Default scenario
+        with test_utils.unix_socket_path() as addr:
+            async def serve(*args):
+                pass
+
+            srv = await asyncio.start_unix_server(serve, addr)
+
+            srv.close()
+            self.assertFalse(os.path.exists(addr))
+
+    @socket_helper.skip_unless_bind_unix_socket
+    async def test_unix_server_sock_cleanup(self):
+        # Using already bound socket
+        with test_utils.unix_socket_path() as addr:
+            async def serve(*args):
+                pass
+
+            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            sock.bind(addr)
+
+            srv = await asyncio.start_unix_server(serve, sock=sock)
+
+            srv.close()
+            self.assertFalse(os.path.exists(addr))
+
+    @socket_helper.skip_unless_bind_unix_socket
+    async def test_unix_server_cleanup_gone(self):
+        # Someone else has already cleaned up the socket
+        with test_utils.unix_socket_path() as addr:
+            async def serve(*args):
+                pass
+
+            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            sock.bind(addr)
+
+            srv = await asyncio.start_unix_server(serve, sock=sock)
+
+            os.unlink(addr)
+
+            srv.close()
+
+    @socket_helper.skip_unless_bind_unix_socket
+    async def test_unix_server_cleanup_replaced(self):
+        # Someone else has replaced the socket with their own
+        with test_utils.unix_socket_path() as addr:
+            async def serve(*args):
+                pass
+
+            srv = await asyncio.start_unix_server(serve, addr)
+
+            os.unlink(addr)
+            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            sock.bind(addr)
+
+            srv.close()
+            self.assertTrue(os.path.exists(addr))
+
+    @socket_helper.skip_unless_bind_unix_socket
+    async def test_unix_server_cleanup_prevented(self):
+        # Automatic cleanup explicitly disabled
+        with test_utils.unix_socket_path() as addr:
+            async def serve(*args):
+                pass
+
+            srv = await asyncio.start_unix_server(serve, addr, cleanup_socket=False)
+
+            srv.close()
+            self.assertTrue(os.path.exists(addr))
 
 
 @unittest.skipUnless(hasattr(asyncio, 'ProactorEventLoop'), 'Windows only')
diff --git a/Lib/test/test_asyncio/test_sock_lowlevel.py b/Lib/test/test_asyncio/test_sock_lowlevel.py
index b829fd4cc69fff..075113cbe8e4a6 100644
--- a/Lib/test/test_asyncio/test_sock_lowlevel.py
+++ b/Lib/test/test_asyncio/test_sock_lowlevel.py
@@ -10,6 +10,10 @@
 from test import support
 from test.support import socket_helper
 
+if socket_helper.tcp_blackhole():
+    raise unittest.SkipTest('Not relevant to ProactorEventLoop')
+
+
 def tearDownModule():
     asyncio.set_event_loop_policy(None)
 
diff --git a/Lib/test/test_asyncio/test_sslproto.py b/Lib/test/test_asyncio/test_sslproto.py
index 52a45f1c7c6e96..37d015339761c6 100644
--- a/Lib/test/test_asyncio/test_sslproto.py
+++ b/Lib/test/test_asyncio/test_sslproto.py
@@ -5,6 +5,7 @@
 import unittest
 import weakref
 from test import support
+from test.support import socket_helper
 from unittest import mock
 try:
     import ssl
@@ -350,6 +351,7 @@ async def client(addr):
         support.gc_collect()
         self.assertIsNone(client_context())
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_start_tls_client_buf_proto_1(self):
         HELLO_MSG = b'1' * self.PAYLOAD_SIZE
 
@@ -502,6 +504,7 @@ async def client(addr):
                 asyncio.wait_for(client(srv.addr),
                                  timeout=support.SHORT_TIMEOUT))
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_start_tls_server_1(self):
         HELLO_MSG = b'1' * self.PAYLOAD_SIZE
         ANSWER = b'answer'
diff --git a/Lib/test/test_asyncio/test_streams.py b/Lib/test/test_asyncio/test_streams.py
index 7f9dc621808358..b408cd1f7da205 100644
--- a/Lib/test/test_asyncio/test_streams.py
+++ b/Lib/test/test_asyncio/test_streams.py
@@ -37,8 +37,7 @@ def tearDown(self):
         # just in case if we have transport close callbacks
         test_utils.run_briefly(self.loop)
 
-        self.loop.close()
-        gc.collect()
+        # set_event_loop() takes care of closing self.loop in a safe way
         super().tearDown()
 
     def _basetest_open_connection(self, open_connection_fut):
@@ -1074,6 +1073,93 @@ def test_eof_feed_when_closing_writer(self):
 
         self.assertEqual(messages, [])
 
+    def test_unclosed_resource_warnings(self):
+        async def inner(httpd):
+            rd, wr = await asyncio.open_connection(*httpd.address)
+
+            wr.write(b'GET / HTTP/1.0\r\n\r\n')
+            data = await rd.readline()
+            self.assertEqual(data, b'HTTP/1.0 200 OK\r\n')
+            data = await rd.read()
+            self.assertTrue(data.endswith(b'\r\n\r\nTest message'))
+            with self.assertWarns(ResourceWarning) as cm:
+                del wr
+                gc.collect()
+                self.assertEqual(len(cm.warnings), 1)
+                self.assertTrue(str(cm.warnings[0].message).startswith("unclosed <StreamWriter"))
+
+        messages = []
+        self.loop.set_exception_handler(lambda loop, ctx: messages.append(ctx))
+
+        with test_utils.run_test_server() as httpd:
+            self.loop.run_until_complete(inner(httpd))
+
+        self.assertEqual(messages, [])
+
+    def test_loop_is_closed_resource_warnings(self):
+        async def inner(httpd):
+            rd, wr = await asyncio.open_connection(*httpd.address)
+
+            wr.write(b'GET / HTTP/1.0\r\n\r\n')
+            data = await rd.readline()
+            self.assertEqual(data, b'HTTP/1.0 200 OK\r\n')
+            data = await rd.read()
+            self.assertTrue(data.endswith(b'\r\n\r\nTest message'))
+
+            # Make "loop is closed" occur first before "del wr" for this test.
+            self.loop.stop()
+            wr.close()
+            while not self.loop.is_closed():
+                await asyncio.sleep(0.0)
+
+            with self.assertWarns(ResourceWarning) as cm:
+                del wr
+                gc.collect()
+                self.assertEqual(len(cm.warnings), 1)
+                self.assertEqual("loop is closed", str(cm.warnings[0].message))
+
+        messages = []
+        self.loop.set_exception_handler(lambda loop, ctx: messages.append(ctx))
+
+        with test_utils.run_test_server() as httpd:
+            with self.assertRaises(RuntimeError):
+                # This exception is caused by `self.loop.stop()` as expected.
+                self.loop.run_until_complete(inner(httpd))
+            gc.collect()
+
+        self.assertEqual(messages, [])
+
+    def test_unhandled_exceptions(self) -> None:
+        port = socket_helper.find_unused_port()
+
+        messages = []
+        self.loop.set_exception_handler(lambda loop, ctx: messages.append(ctx))
+
+        async def client():
+            rd, wr = await asyncio.open_connection('localhost', port)
+            wr.write(b'test msg')
+            await wr.drain()
+            wr.close()
+            await wr.wait_closed()
+
+        async def main():
+            async def handle_echo(reader, writer):
+                raise Exception('test')
+
+            server = await asyncio.start_server(
+                handle_echo, 'localhost', port)
+            await server.start_serving()
+            await client()
+            server.close()
+            await server.wait_closed()
+
+        self.loop.run_until_complete(main())
+
+        self.assertEqual(messages[0]['message'],
+                         'Unhandled exception in client_connected_cb')
+        # Break explicitly reference cycle
+        messages = None
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_subprocess.py b/Lib/test/test_asyncio/test_subprocess.py
index eeeca40c15cd28..179c8cb8cc17cf 100644
--- a/Lib/test/test_asyncio/test_subprocess.py
+++ b/Lib/test/test_asyncio/test_subprocess.py
@@ -1,6 +1,7 @@
 import os
 import signal
 import sys
+import textwrap
 import unittest
 import warnings
 from unittest import mock
@@ -12,9 +13,13 @@
 from test import support
 from test.support import os_helper
 
-if sys.platform != 'win32':
+
+if support.MS_WINDOWS:
+    import msvcrt
+else:
     from asyncio import unix_events
 
+
 if support.check_sanitizer(address=True):
     raise unittest.SkipTest("Exposes ASAN flakiness in GitHub CI")
 
@@ -270,26 +275,43 @@ async def send_signal(proc):
         finally:
             signal.signal(signal.SIGHUP, old_handler)
 
-    def prepare_broken_pipe_test(self):
+    def test_stdin_broken_pipe(self):
         # buffer large enough to feed the whole pipe buffer
         large_data = b'x' * support.PIPE_MAX_SIZE
 
+        rfd, wfd = os.pipe()
+        self.addCleanup(os.close, rfd)
+        self.addCleanup(os.close, wfd)
+        if support.MS_WINDOWS:
+            handle = msvcrt.get_osfhandle(rfd)
+            os.set_handle_inheritable(handle, True)
+            code = textwrap.dedent(f'''
+                import os, msvcrt
+                handle = {handle}
+                fd = msvcrt.open_osfhandle(handle, os.O_RDONLY)
+                os.read(fd, 1)
+            ''')
+            from subprocess import STARTUPINFO
+            startupinfo = STARTUPINFO()
+            startupinfo.lpAttributeList = {"handle_list": [handle]}
+            kwargs = dict(startupinfo=startupinfo)
+        else:
+            code = f'import os; fd = {rfd}; os.read(fd, 1)'
+            kwargs = dict(pass_fds=(rfd,))
+
         # the program ends before the stdin can be fed
         proc = self.loop.run_until_complete(
             asyncio.create_subprocess_exec(
-                sys.executable, '-c', 'pass',
+                sys.executable, '-c', code,
                 stdin=subprocess.PIPE,
+                **kwargs
             )
         )
 
-        return (proc, large_data)
-
-    def test_stdin_broken_pipe(self):
-        proc, large_data = self.prepare_broken_pipe_test()
-
         async def write_stdin(proc, data):
-            await asyncio.sleep(0.5)
             proc.stdin.write(data)
+            # Only exit the child process once the write buffer is filled
+            os.write(wfd, b'go')
             await proc.stdin.drain()
 
         coro = write_stdin(proc, large_data)
@@ -300,7 +322,16 @@ async def write_stdin(proc, data):
         self.loop.run_until_complete(proc.wait())
 
     def test_communicate_ignore_broken_pipe(self):
-        proc, large_data = self.prepare_broken_pipe_test()
+        # buffer large enough to feed the whole pipe buffer
+        large_data = b'x' * support.PIPE_MAX_SIZE
+
+        # the program ends before the stdin can be fed
+        proc = self.loop.run_until_complete(
+            asyncio.create_subprocess_exec(
+                sys.executable, '-c', 'pass',
+                stdin=subprocess.PIPE,
+            )
+        )
 
         # communicate() must ignore BrokenPipeError when feeding stdin
         self.loop.set_exception_handler(lambda loop, msg: None)
@@ -753,21 +784,44 @@ async def main() -> None:
 
         self.loop.run_until_complete(main())
 
-    def test_subprocess_consistent_callbacks(self):
+    def test_subprocess_protocol_events(self):
+        # gh-108973: Test that all subprocess protocol methods are called.
+        # The protocol methods are not called in a determistic order.
+        # The order depends on the event loop and the operating system.
         events = []
+        fds = [1, 2]
+        expected = [
+            ('pipe_data_received', 1, b'stdout'),
+            ('pipe_data_received', 2, b'stderr'),
+            ('pipe_connection_lost', 1),
+            ('pipe_connection_lost', 2),
+            'process_exited',
+        ]
+        per_fd_expected = [
+            'pipe_data_received',
+            'pipe_connection_lost',
+        ]
+
         class MyProtocol(asyncio.SubprocessProtocol):
             def __init__(self, exit_future: asyncio.Future) -> None:
                 self.exit_future = exit_future
 
             def pipe_data_received(self, fd, data) -> None:
                 events.append(('pipe_data_received', fd, data))
+                self.exit_maybe()
 
             def pipe_connection_lost(self, fd, exc) -> None:
-                events.append('pipe_connection_lost')
+                events.append(('pipe_connection_lost', fd))
+                self.exit_maybe()
 
             def process_exited(self) -> None:
                 events.append('process_exited')
-                self.exit_future.set_result(True)
+                self.exit_maybe()
+
+            def exit_maybe(self):
+                # Only exit when we got all expected events
+                if len(events) >= len(expected):
+                    self.exit_future.set_result(True)
 
         async def main() -> None:
             loop = asyncio.get_running_loop()
@@ -777,15 +831,24 @@ async def main() -> None:
                                                       sys.executable, '-c', code, stdin=None)
             await exit_future
             transport.close()
-            self.assertEqual(events, [
-                ('pipe_data_received', 1, b'stdout'),
-                ('pipe_data_received', 2, b'stderr'),
-                'pipe_connection_lost',
-                'pipe_connection_lost',
-                'process_exited',
-            ])
 
-        self.loop.run_until_complete(main())
+            return events
+
+        events = self.loop.run_until_complete(main())
+
+        # First, make sure that we received all events
+        self.assertSetEqual(set(events), set(expected))
+
+        # Second, check order of pipe events per file descriptor
+        per_fd_events = {fd: [] for fd in fds}
+        for event in events:
+            if event == 'process_exited':
+                continue
+            name, fd = event[:2]
+            per_fd_events[fd].append(name)
+
+        for fd in fds:
+            self.assertEqual(per_fd_events[fd], per_fd_expected, (fd, events))
 
     def test_subprocess_communicate_stdout(self):
         # See https://github.com/python/cpython/issues/100133
diff --git a/Lib/test/test_asyncio/test_taskgroups.py b/Lib/test/test_asyncio/test_taskgroups.py
index 6a0231f2859a62..7a18362b54e469 100644
--- a/Lib/test/test_asyncio/test_taskgroups.py
+++ b/Lib/test/test_asyncio/test_taskgroups.py
@@ -8,6 +8,8 @@
 from asyncio import taskgroups
 import unittest
 
+from test.test_asyncio.utils import await_without_task
+
 
 # To prevent a warning "test altered the execution environment"
 def tearDownModule():
@@ -779,6 +781,49 @@ async def main():
 
         await asyncio.create_task(main())
 
+    async def test_taskgroup_already_entered(self):
+        tg = taskgroups.TaskGroup()
+        async with tg:
+            with self.assertRaisesRegex(RuntimeError, "has already been entered"):
+                async with tg:
+                    pass
+
+    async def test_taskgroup_double_enter(self):
+        tg = taskgroups.TaskGroup()
+        async with tg:
+            pass
+        with self.assertRaisesRegex(RuntimeError, "has already been entered"):
+            async with tg:
+                pass
+
+    async def test_taskgroup_finished(self):
+        tg = taskgroups.TaskGroup()
+        async with tg:
+            pass
+        coro = asyncio.sleep(0)
+        with self.assertRaisesRegex(RuntimeError, "is finished"):
+            tg.create_task(coro)
+        # We still have to await coro to avoid a warning
+        await coro
+
+    async def test_taskgroup_not_entered(self):
+        tg = taskgroups.TaskGroup()
+        coro = asyncio.sleep(0)
+        with self.assertRaisesRegex(RuntimeError, "has not been entered"):
+            tg.create_task(coro)
+        # We still have to await coro to avoid a warning
+        await coro
+
+    async def test_taskgroup_without_parent_task(self):
+        tg = taskgroups.TaskGroup()
+        with self.assertRaisesRegex(RuntimeError, "parent task"):
+            await await_without_task(tg.__aenter__())
+        coro = asyncio.sleep(0)
+        with self.assertRaisesRegex(RuntimeError, "has not been entered"):
+            tg.create_task(coro)
+        # We still have to await coro to avoid a warning
+        await coro
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 6e8a51ce2555d5..4dfaff847edb90 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -1609,6 +1609,21 @@ async def sleeper(dt, arg):
         self.assertEqual(t.result(), 'yeah')
         self.assertAlmostEqual(0.1, loop.time())
 
+    def test_sleep_when_delay_is_nan(self):
+
+        def gen():
+            yield
+
+        loop = self.new_test_loop(gen)
+
+        async def sleeper():
+            await asyncio.sleep(float("nan"))
+
+        t = self.new_task(loop, sleeper())
+
+        with self.assertRaises(ValueError):
+            loop.run_until_complete(t)
+
     def test_sleep_cancel(self):
 
         def gen():
diff --git a/Lib/test/test_asyncio/test_timeouts.py b/Lib/test/test_asyncio/test_timeouts.py
index 8b6b9a1fea0be8..f54e79e4d8e600 100644
--- a/Lib/test/test_asyncio/test_timeouts.py
+++ b/Lib/test/test_asyncio/test_timeouts.py
@@ -5,11 +5,12 @@
 
 import asyncio
 
+from test.test_asyncio.utils import await_without_task
+
 
 def tearDownModule():
     asyncio.set_event_loop_policy(None)
 
-
 class TimeoutTests(unittest.IsolatedAsyncioTestCase):
 
     async def test_timeout_basic(self):
@@ -46,7 +47,6 @@ async def test_nested_timeouts(self):
         self.assertTrue(cm2.expired())
 
     async def test_waiter_cancelled(self):
-        loop = asyncio.get_running_loop()
         cancelled = False
         with self.assertRaises(TimeoutError):
             async with asyncio.timeout(0.01):
@@ -59,39 +59,26 @@ async def test_waiter_cancelled(self):
 
     async def test_timeout_not_called(self):
         loop = asyncio.get_running_loop()
-        t0 = loop.time()
         async with asyncio.timeout(10) as cm:
             await asyncio.sleep(0.01)
         t1 = loop.time()
 
         self.assertFalse(cm.expired())
-        # 2 sec for slow CI boxes
-        self.assertLess(t1-t0, 2)
         self.assertGreater(cm.when(), t1)
 
     async def test_timeout_disabled(self):
-        loop = asyncio.get_running_loop()
-        t0 = loop.time()
         async with asyncio.timeout(None) as cm:
             await asyncio.sleep(0.01)
-        t1 = loop.time()
 
         self.assertFalse(cm.expired())
         self.assertIsNone(cm.when())
-        # 2 sec for slow CI boxes
-        self.assertLess(t1-t0, 2)
 
     async def test_timeout_at_disabled(self):
-        loop = asyncio.get_running_loop()
-        t0 = loop.time()
         async with asyncio.timeout_at(None) as cm:
             await asyncio.sleep(0.01)
-        t1 = loop.time()
 
         self.assertFalse(cm.expired())
         self.assertIsNone(cm.when())
-        # 2 sec for slow CI boxes
-        self.assertLess(t1-t0, 2)
 
     async def test_timeout_zero(self):
         loop = asyncio.get_running_loop()
@@ -101,8 +88,6 @@ async def test_timeout_zero(self):
                 await asyncio.sleep(10)
         t1 = loop.time()
         self.assertTrue(cm.expired())
-        # 2 sec for slow CI boxes
-        self.assertLess(t1-t0, 2)
         self.assertTrue(t0 <= cm.when() <= t1)
 
     async def test_timeout_zero_sleep_zero(self):
@@ -113,8 +98,6 @@ async def test_timeout_zero_sleep_zero(self):
                 await asyncio.sleep(0)
         t1 = loop.time()
         self.assertTrue(cm.expired())
-        # 2 sec for slow CI boxes
-        self.assertLess(t1-t0, 2)
         self.assertTrue(t0 <= cm.when() <= t1)
 
     async def test_timeout_in_the_past_sleep_zero(self):
@@ -125,8 +108,6 @@ async def test_timeout_in_the_past_sleep_zero(self):
                 await asyncio.sleep(0)
         t1 = loop.time()
         self.assertTrue(cm.expired())
-        # 2 sec for slow CI boxes
-        self.assertLess(t1-t0, 2)
         self.assertTrue(t0 >= cm.when() <= t1)
 
     async def test_foreign_exception_passed(self):
@@ -277,6 +258,51 @@ async def test_timeout_exception_cause (self):
         cause = exc.exception.__cause__
         assert isinstance(cause, asyncio.CancelledError)
 
+    async def test_timeout_already_entered(self):
+        async with asyncio.timeout(0.01) as cm:
+            with self.assertRaisesRegex(RuntimeError, "has already been entered"):
+                async with cm:
+                    pass
+
+    async def test_timeout_double_enter(self):
+        async with asyncio.timeout(0.01) as cm:
+            pass
+        with self.assertRaisesRegex(RuntimeError, "has already been entered"):
+            async with cm:
+                pass
+
+    async def test_timeout_finished(self):
+        async with asyncio.timeout(0.01) as cm:
+            pass
+        with self.assertRaisesRegex(RuntimeError, "finished"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_expired(self):
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.01) as cm:
+                await asyncio.sleep(1)
+        with self.assertRaisesRegex(RuntimeError, "expired"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_expiring(self):
+        async with asyncio.timeout(0.01) as cm:
+            with self.assertRaises(asyncio.CancelledError):
+                await asyncio.sleep(1)
+            with self.assertRaisesRegex(RuntimeError, "expiring"):
+                cm.reschedule(0.02)
+
+    async def test_timeout_not_entered(self):
+        cm = asyncio.timeout(0.01)
+        with self.assertRaisesRegex(RuntimeError, "has not been entered"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_without_task(self):
+        cm = asyncio.timeout(0.01)
+        with self.assertRaisesRegex(RuntimeError, "task"):
+            await await_without_task(cm.__aenter__())
+        with self.assertRaisesRegex(RuntimeError, "has not been entered"):
+            cm.reschedule(0.02)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index cdf3eaac68af15..d2c8cba6acfa31 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -4,6 +4,7 @@
 import errno
 import io
 import multiprocessing
+from multiprocessing.util import _cleanup_tests as multiprocessing_cleanup_tests
 import os
 import pathlib
 import signal
@@ -11,9 +12,12 @@
 import stat
 import sys
 import threading
+import time
 import unittest
 from unittest import mock
 import warnings
+
+from test import support
 from test.support import os_helper
 from test.support import socket_helper
 from test.support import wait_process
@@ -1901,6 +1905,8 @@ async def test_fork_not_share_event_loop(self):
 
     @hashlib_helper.requires_hashdigest('md5')
     def test_fork_signal_handling(self):
+        self.addCleanup(multiprocessing_cleanup_tests)
+
         # Sending signal to the forked process should not affect the parent
         # process
         ctx = multiprocessing.get_context('fork')
@@ -1911,8 +1917,14 @@ def test_fork_signal_handling(self):
         parent_handled = manager.Event()
 
         def child_main():
-            signal.signal(signal.SIGTERM, lambda *args: child_handled.set())
+            def on_sigterm(*args):
+                child_handled.set()
+                sys.exit()
+
+            signal.signal(signal.SIGTERM, on_sigterm)
             child_started.set()
+            while True:
+                time.sleep(1)
 
         async def main():
             loop = asyncio.get_running_loop()
@@ -1922,7 +1934,7 @@ async def main():
             process.start()
             child_started.wait()
             os.kill(process.pid, signal.SIGTERM)
-            process.join()
+            process.join(timeout=support.SHORT_TIMEOUT)
 
             async def func():
                 await asyncio.sleep(0.1)
@@ -1933,11 +1945,14 @@ async def func():
 
         asyncio.run(main())
 
+        child_handled.wait(timeout=support.SHORT_TIMEOUT)
         self.assertFalse(parent_handled.is_set())
         self.assertTrue(child_handled.is_set())
 
     @hashlib_helper.requires_hashdigest('md5')
     def test_fork_asyncio_run(self):
+        self.addCleanup(multiprocessing_cleanup_tests)
+
         ctx = multiprocessing.get_context('fork')
         manager = ctx.Manager()
         self.addCleanup(manager.shutdown)
@@ -1955,6 +1970,8 @@ async def child_main():
 
     @hashlib_helper.requires_hashdigest('md5')
     def test_fork_asyncio_subprocess(self):
+        self.addCleanup(multiprocessing_cleanup_tests)
+
         ctx = multiprocessing.get_context('fork')
         manager = ctx.Manager()
         self.addCleanup(manager.shutdown)
diff --git a/Lib/test/test_asyncio/test_waitfor.py b/Lib/test/test_asyncio/test_waitfor.py
index d5c02ba4a01df9..d52f32534a0cfe 100644
--- a/Lib/test/test_asyncio/test_waitfor.py
+++ b/Lib/test/test_asyncio/test_waitfor.py
@@ -1,6 +1,7 @@
 import asyncio
 import unittest
 import time
+from test import support
 
 
 def tearDownModule():
@@ -65,17 +66,12 @@ async def test_wait_for_timeout_less_then_0_or_0_future_done(self):
         fut = loop.create_future()
         fut.set_result('done')
 
-        t0 = loop.time()
         ret = await asyncio.wait_for(fut, 0)
-        t1 = loop.time()
 
         self.assertEqual(ret, 'done')
         self.assertTrue(fut.done())
-        self.assertLess(t1 - t0, 0.1)
 
     async def test_wait_for_timeout_less_then_0_or_0_coroutine_do_not_started(self):
-        loop = asyncio.get_running_loop()
-
         foo_started = False
 
         async def foo():
@@ -83,12 +79,9 @@ async def foo():
             foo_started = True
 
         with self.assertRaises(asyncio.TimeoutError):
-            t0 = loop.time()
             await asyncio.wait_for(foo(), 0)
-        t1 = loop.time()
 
         self.assertEqual(foo_started, False)
-        self.assertLess(t1 - t0, 0.1)
 
     async def test_wait_for_timeout_less_then_0_or_0(self):
         loop = asyncio.get_running_loop()
@@ -112,25 +105,21 @@ async def foo():
                 await started
 
                 with self.assertRaises(asyncio.TimeoutError):
-                    t0 = loop.time()
                     await asyncio.wait_for(fut, timeout)
-                t1 = loop.time()
 
                 self.assertTrue(fut.done())
                 # it should have been cancelled due to the timeout
                 self.assertTrue(fut.cancelled())
                 self.assertEqual(foo_running, False)
-                self.assertLess(t1 - t0, 0.1)
 
     async def test_wait_for(self):
-        loop = asyncio.get_running_loop()
         foo_running = None
 
         async def foo():
             nonlocal foo_running
             foo_running = True
             try:
-                await asyncio.sleep(10)
+                await asyncio.sleep(support.LONG_TIMEOUT)
             finally:
                 foo_running = False
             return 'done'
@@ -138,13 +127,10 @@ async def foo():
         fut = asyncio.create_task(foo())
 
         with self.assertRaises(asyncio.TimeoutError):
-            t0 = loop.time()
             await asyncio.wait_for(fut, 0.1)
-        t1 = loop.time()
         self.assertTrue(fut.done())
         # it should have been cancelled due to the timeout
         self.assertTrue(fut.cancelled())
-        self.assertLess(t1 - t0, 0.5)
         self.assertEqual(foo_running, False)
 
     async def test_wait_for_blocking(self):
diff --git a/Lib/test/test_asyncio/test_windows_events.py b/Lib/test/test_asyncio/test_windows_events.py
index a36119a8004f9d..6e6c90a247b291 100644
--- a/Lib/test/test_asyncio/test_windows_events.py
+++ b/Lib/test/test_asyncio/test_windows_events.py
@@ -163,29 +163,25 @@ def test_wait_for_handle(self):
 
         # Wait for unset event with 0.5s timeout;
         # result should be False at timeout
-        fut = self.loop._proactor.wait_for_handle(event, 0.5)
+        timeout = 0.5
+        fut = self.loop._proactor.wait_for_handle(event, timeout)
         start = self.loop.time()
         done = self.loop.run_until_complete(fut)
         elapsed = self.loop.time() - start
 
         self.assertEqual(done, False)
         self.assertFalse(fut.result())
-        # bpo-31008: Tolerate only 450 ms (at least 500 ms expected),
-        # because of bad clock resolution on Windows
-        self.assertTrue(0.45 <= elapsed <= 0.9, elapsed)
+        self.assertGreaterEqual(elapsed, timeout - test_utils.CLOCK_RES)
 
         _overlapped.SetEvent(event)
 
         # Wait for set event;
         # result should be True immediately
         fut = self.loop._proactor.wait_for_handle(event, 10)
-        start = self.loop.time()
         done = self.loop.run_until_complete(fut)
-        elapsed = self.loop.time() - start
 
         self.assertEqual(done, True)
         self.assertTrue(fut.result())
-        self.assertTrue(0 <= elapsed < 0.3, elapsed)
 
         # asyncio issue #195: cancelling a done _WaitHandleFuture
         # must not crash
@@ -199,11 +195,8 @@ def test_wait_for_handle_cancel(self):
         # CancelledError should be raised immediately
         fut = self.loop._proactor.wait_for_handle(event, 10)
         fut.cancel()
-        start = self.loop.time()
         with self.assertRaises(asyncio.CancelledError):
             self.loop.run_until_complete(fut)
-        elapsed = self.loop.time() - start
-        self.assertTrue(0 <= elapsed < 0.1, elapsed)
 
         # asyncio issue #195: cancelling a _WaitHandleFuture twice
         # must not crash
diff --git a/Lib/test/test_asyncio/utils.py b/Lib/test/test_asyncio/utils.py
index 6dee5bb33b2560..44943e1fa7bc4e 100644
--- a/Lib/test/test_asyncio/utils.py
+++ b/Lib/test/test_asyncio/utils.py
@@ -36,21 +36,26 @@
 from test.support import threading_helper
 
 
-def data_file(filename):
-    if hasattr(support, 'TEST_HOME_DIR'):
-        fullname = os.path.join(support.TEST_HOME_DIR, filename)
-        if os.path.isfile(fullname):
-            return fullname
-    fullname = os.path.join(os.path.dirname(__file__), '..', filename)
+# Use the maximum known clock resolution (gh-75191, gh-110088): Windows
+# GetTickCount64() has a resolution of 15.6 ms. Use 50 ms to tolerate rounding
+# issues.
+CLOCK_RES = 0.050
+
+
+def data_file(*filename):
+    fullname = os.path.join(support.TEST_HOME_DIR, *filename)
     if os.path.isfile(fullname):
         return fullname
-    raise FileNotFoundError(filename)
+    fullname = os.path.join(os.path.dirname(__file__), '..', *filename)
+    if os.path.isfile(fullname):
+        return fullname
+    raise FileNotFoundError(os.path.join(filename))
 
 
-ONLYCERT = data_file('ssl_cert.pem')
-ONLYKEY = data_file('ssl_key.pem')
-SIGNED_CERTFILE = data_file('keycert3.pem')
-SIGNING_CA = data_file('pycacert.pem')
+ONLYCERT = data_file('certdata', 'ssl_cert.pem')
+ONLYKEY = data_file('certdata', 'ssl_key.pem')
+SIGNED_CERTFILE = data_file('certdata', 'keycert3.pem')
+SIGNING_CA = data_file('certdata', 'pycacert.pem')
 PEERCERT = {
     'OCSP': ('http://testca.pythontest.net/testca/ocsp/',),
     'caIssuers': ('http://testca.pythontest.net/testca/pycacert.cer',),
@@ -541,6 +546,7 @@ def close_loop(loop):
             else:
                 loop._default_executor.shutdown(wait=True)
         loop.close()
+
         policy = support.maybe_get_event_loop_policy()
         if policy is not None:
             try:
@@ -552,9 +558,13 @@ def close_loop(loop):
                 pass
             else:
                 if isinstance(watcher, asyncio.ThreadedChildWatcher):
-                    threads = list(watcher._threads.values())
-                    for thread in threads:
-                        thread.join()
+                    # Wait for subprocess to finish, but not forever
+                    for thread in list(watcher._threads.values()):
+                        thread.join(timeout=support.SHORT_TIMEOUT)
+                        if thread.is_alive():
+                            raise RuntimeError(f"thread {thread} still alive: "
+                                               "subprocess still running")
+
 
     def set_event_loop(self, loop, *, cleanup=True):
         if loop is None:
@@ -607,3 +617,18 @@ def mock_nonblocking_socket(proto=socket.IPPROTO_TCP, type=socket.SOCK_STREAM,
     sock.family = family
     sock.gettimeout.return_value = 0.0
     return sock
+
+
+async def await_without_task(coro):
+    exc = None
+    def func():
+        try:
+            for _ in coro.__await__():
+                pass
+        except BaseException as err:
+            nonlocal exc
+            exc = err
+    asyncio.get_running_loop().call_soon(func)
+    await asyncio.sleep(0)
+    if exc is not None:
+        raise exc
diff --git a/Lib/test/test_audioop.py b/Lib/test/test_audioop.py
deleted file mode 100644
index 05c0f20e122a4c..00000000000000
--- a/Lib/test/test_audioop.py
+++ /dev/null
@@ -1,568 +0,0 @@
-import sys
-from test.support import warnings_helper
-import unittest
-
-audioop = warnings_helper.import_deprecated("audioop")
-
-
-def pack(width, data):
-    return b''.join(v.to_bytes(width, sys.byteorder, signed=True) for v in data)
-
-def unpack(width, data):
-    return [int.from_bytes(data[i: i + width], sys.byteorder, signed=True)
-            for i in range(0, len(data), width)]
-
-packs = {w: (lambda *data, width=w: pack(width, data)) for w in (1, 2, 3, 4)}
-maxvalues = {w: (1 << (8 * w - 1)) - 1 for w in (1, 2, 3, 4)}
-minvalues = {w: -1 << (8 * w - 1) for w in (1, 2, 3, 4)}
-
-datas = {
-    1: b'\x00\x12\x45\xbb\x7f\x80\xff',
-    2: packs[2](0, 0x1234, 0x4567, -0x4567, 0x7fff, -0x8000, -1),
-    3: packs[3](0, 0x123456, 0x456789, -0x456789, 0x7fffff, -0x800000, -1),
-    4: packs[4](0, 0x12345678, 0x456789ab, -0x456789ab,
-                0x7fffffff, -0x80000000, -1),
-}
-
-INVALID_DATA = [
-    (b'abc', 0),
-    (b'abc', 2),
-    (b'ab', 3),
-    (b'abc', 4),
-]
-
-
-class TestAudioop(unittest.TestCase):
-
-    def test_max(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.max(b'', w), 0)
-            self.assertEqual(audioop.max(bytearray(), w), 0)
-            self.assertEqual(audioop.max(memoryview(b''), w), 0)
-            p = packs[w]
-            self.assertEqual(audioop.max(p(5), w), 5)
-            self.assertEqual(audioop.max(p(5, -8, -1), w), 8)
-            self.assertEqual(audioop.max(p(maxvalues[w]), w), maxvalues[w])
-            self.assertEqual(audioop.max(p(minvalues[w]), w), -minvalues[w])
-            self.assertEqual(audioop.max(datas[w], w), -minvalues[w])
-
-    def test_minmax(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.minmax(b'', w),
-                             (0x7fffffff, -0x80000000))
-            self.assertEqual(audioop.minmax(bytearray(), w),
-                             (0x7fffffff, -0x80000000))
-            self.assertEqual(audioop.minmax(memoryview(b''), w),
-                             (0x7fffffff, -0x80000000))
-            p = packs[w]
-            self.assertEqual(audioop.minmax(p(5), w), (5, 5))
-            self.assertEqual(audioop.minmax(p(5, -8, -1), w), (-8, 5))
-            self.assertEqual(audioop.minmax(p(maxvalues[w]), w),
-                             (maxvalues[w], maxvalues[w]))
-            self.assertEqual(audioop.minmax(p(minvalues[w]), w),
-                             (minvalues[w], minvalues[w]))
-            self.assertEqual(audioop.minmax(datas[w], w),
-                             (minvalues[w], maxvalues[w]))
-
-    def test_maxpp(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.maxpp(b'', w), 0)
-            self.assertEqual(audioop.maxpp(bytearray(), w), 0)
-            self.assertEqual(audioop.maxpp(memoryview(b''), w), 0)
-            self.assertEqual(audioop.maxpp(packs[w](*range(100)), w), 0)
-            self.assertEqual(audioop.maxpp(packs[w](9, 10, 5, 5, 0, 1), w), 10)
-            self.assertEqual(audioop.maxpp(datas[w], w),
-                             maxvalues[w] - minvalues[w])
-
-    def test_avg(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.avg(b'', w), 0)
-            self.assertEqual(audioop.avg(bytearray(), w), 0)
-            self.assertEqual(audioop.avg(memoryview(b''), w), 0)
-            p = packs[w]
-            self.assertEqual(audioop.avg(p(5), w), 5)
-            self .assertEqual(audioop.avg(p(5, 8), w), 6)
-            self.assertEqual(audioop.avg(p(5, -8), w), -2)
-            self.assertEqual(audioop.avg(p(maxvalues[w], maxvalues[w]), w),
-                             maxvalues[w])
-            self.assertEqual(audioop.avg(p(minvalues[w], minvalues[w]), w),
-                             minvalues[w])
-        self.assertEqual(audioop.avg(packs[4](0x50000000, 0x70000000), 4),
-                         0x60000000)
-        self.assertEqual(audioop.avg(packs[4](-0x50000000, -0x70000000), 4),
-                         -0x60000000)
-
-    def test_avgpp(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.avgpp(b'', w), 0)
-            self.assertEqual(audioop.avgpp(bytearray(), w), 0)
-            self.assertEqual(audioop.avgpp(memoryview(b''), w), 0)
-            self.assertEqual(audioop.avgpp(packs[w](*range(100)), w), 0)
-            self.assertEqual(audioop.avgpp(packs[w](9, 10, 5, 5, 0, 1), w), 10)
-        self.assertEqual(audioop.avgpp(datas[1], 1), 196)
-        self.assertEqual(audioop.avgpp(datas[2], 2), 50534)
-        self.assertEqual(audioop.avgpp(datas[3], 3), 12937096)
-        self.assertEqual(audioop.avgpp(datas[4], 4), 3311897002)
-
-    def test_rms(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.rms(b'', w), 0)
-            self.assertEqual(audioop.rms(bytearray(), w), 0)
-            self.assertEqual(audioop.rms(memoryview(b''), w), 0)
-            p = packs[w]
-            self.assertEqual(audioop.rms(p(*range(100)), w), 57)
-            self.assertAlmostEqual(audioop.rms(p(maxvalues[w]) * 5, w),
-                                   maxvalues[w], delta=1)
-            self.assertAlmostEqual(audioop.rms(p(minvalues[w]) * 5, w),
-                                   -minvalues[w], delta=1)
-        self.assertEqual(audioop.rms(datas[1], 1), 77)
-        self.assertEqual(audioop.rms(datas[2], 2), 20001)
-        self.assertEqual(audioop.rms(datas[3], 3), 5120523)
-        self.assertEqual(audioop.rms(datas[4], 4), 1310854152)
-
-    def test_cross(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.cross(b'', w), -1)
-            self.assertEqual(audioop.cross(bytearray(), w), -1)
-            self.assertEqual(audioop.cross(memoryview(b''), w), -1)
-            p = packs[w]
-            self.assertEqual(audioop.cross(p(0, 1, 2), w), 0)
-            self.assertEqual(audioop.cross(p(1, 2, -3, -4), w), 1)
-            self.assertEqual(audioop.cross(p(-1, -2, 3, 4), w), 1)
-            self.assertEqual(audioop.cross(p(0, minvalues[w]), w), 1)
-            self.assertEqual(audioop.cross(p(minvalues[w], maxvalues[w]), w), 1)
-
-    def test_add(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.add(b'', b'', w), b'')
-            self.assertEqual(audioop.add(bytearray(), bytearray(), w), b'')
-            self.assertEqual(audioop.add(memoryview(b''), memoryview(b''), w), b'')
-            self.assertEqual(audioop.add(datas[w], b'\0' * len(datas[w]), w),
-                             datas[w])
-        self.assertEqual(audioop.add(datas[1], datas[1], 1),
-                         b'\x00\x24\x7f\x80\x7f\x80\xfe')
-        self.assertEqual(audioop.add(datas[2], datas[2], 2),
-                packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2))
-        self.assertEqual(audioop.add(datas[3], datas[3], 3),
-                packs[3](0, 0x2468ac, 0x7fffff, -0x800000,
-                       0x7fffff, -0x800000, -2))
-        self.assertEqual(audioop.add(datas[4], datas[4], 4),
-                packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000,
-                       0x7fffffff, -0x80000000, -2))
-
-    def test_bias(self):
-        for w in 1, 2, 3, 4:
-            for bias in 0, 1, -1, 127, -128, 0x7fffffff, -0x80000000:
-                self.assertEqual(audioop.bias(b'', w, bias), b'')
-                self.assertEqual(audioop.bias(bytearray(), w, bias), b'')
-                self.assertEqual(audioop.bias(memoryview(b''), w, bias), b'')
-        self.assertEqual(audioop.bias(datas[1], 1, 1),
-                         b'\x01\x13\x46\xbc\x80\x81\x00')
-        self.assertEqual(audioop.bias(datas[1], 1, -1),
-                         b'\xff\x11\x44\xba\x7e\x7f\xfe')
-        self.assertEqual(audioop.bias(datas[1], 1, 0x7fffffff),
-                         b'\xff\x11\x44\xba\x7e\x7f\xfe')
-        self.assertEqual(audioop.bias(datas[1], 1, -0x80000000),
-                         datas[1])
-        self.assertEqual(audioop.bias(datas[2], 2, 1),
-                packs[2](1, 0x1235, 0x4568, -0x4566, -0x8000, -0x7fff, 0))
-        self.assertEqual(audioop.bias(datas[2], 2, -1),
-                packs[2](-1, 0x1233, 0x4566, -0x4568, 0x7ffe, 0x7fff, -2))
-        self.assertEqual(audioop.bias(datas[2], 2, 0x7fffffff),
-                packs[2](-1, 0x1233, 0x4566, -0x4568, 0x7ffe, 0x7fff, -2))
-        self.assertEqual(audioop.bias(datas[2], 2, -0x80000000),
-                datas[2])
-        self.assertEqual(audioop.bias(datas[3], 3, 1),
-                packs[3](1, 0x123457, 0x45678a, -0x456788,
-                         -0x800000, -0x7fffff, 0))
-        self.assertEqual(audioop.bias(datas[3], 3, -1),
-                packs[3](-1, 0x123455, 0x456788, -0x45678a,
-                         0x7ffffe, 0x7fffff, -2))
-        self.assertEqual(audioop.bias(datas[3], 3, 0x7fffffff),
-                packs[3](-1, 0x123455, 0x456788, -0x45678a,
-                         0x7ffffe, 0x7fffff, -2))
-        self.assertEqual(audioop.bias(datas[3], 3, -0x80000000),
-                datas[3])
-        self.assertEqual(audioop.bias(datas[4], 4, 1),
-                packs[4](1, 0x12345679, 0x456789ac, -0x456789aa,
-                         -0x80000000, -0x7fffffff, 0))
-        self.assertEqual(audioop.bias(datas[4], 4, -1),
-                packs[4](-1, 0x12345677, 0x456789aa, -0x456789ac,
-                         0x7ffffffe, 0x7fffffff, -2))
-        self.assertEqual(audioop.bias(datas[4], 4, 0x7fffffff),
-                packs[4](0x7fffffff, -0x6dcba989, -0x3a987656, 0x3a987654,
-                         -2, -1, 0x7ffffffe))
-        self.assertEqual(audioop.bias(datas[4], 4, -0x80000000),
-                packs[4](-0x80000000, -0x6dcba988, -0x3a987655, 0x3a987655,
-                         -1, 0, 0x7fffffff))
-
-    def test_lin2lin(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.lin2lin(datas[w], w, w), datas[w])
-            self.assertEqual(audioop.lin2lin(bytearray(datas[w]), w, w),
-                             datas[w])
-            self.assertEqual(audioop.lin2lin(memoryview(datas[w]), w, w),
-                             datas[w])
-
-        self.assertEqual(audioop.lin2lin(datas[1], 1, 2),
-            packs[2](0, 0x1200, 0x4500, -0x4500, 0x7f00, -0x8000, -0x100))
-        self.assertEqual(audioop.lin2lin(datas[1], 1, 3),
-            packs[3](0, 0x120000, 0x450000, -0x450000,
-                     0x7f0000, -0x800000, -0x10000))
-        self.assertEqual(audioop.lin2lin(datas[1], 1, 4),
-            packs[4](0, 0x12000000, 0x45000000, -0x45000000,
-                     0x7f000000, -0x80000000, -0x1000000))
-        self.assertEqual(audioop.lin2lin(datas[2], 2, 1),
-            b'\x00\x12\x45\xba\x7f\x80\xff')
-        self.assertEqual(audioop.lin2lin(datas[2], 2, 3),
-            packs[3](0, 0x123400, 0x456700, -0x456700,
-                     0x7fff00, -0x800000, -0x100))
-        self.assertEqual(audioop.lin2lin(datas[2], 2, 4),
-            packs[4](0, 0x12340000, 0x45670000, -0x45670000,
-                     0x7fff0000, -0x80000000, -0x10000))
-        self.assertEqual(audioop.lin2lin(datas[3], 3, 1),
-            b'\x00\x12\x45\xba\x7f\x80\xff')
-        self.assertEqual(audioop.lin2lin(datas[3], 3, 2),
-            packs[2](0, 0x1234, 0x4567, -0x4568, 0x7fff, -0x8000, -1))
-        self.assertEqual(audioop.lin2lin(datas[3], 3, 4),
-            packs[4](0, 0x12345600, 0x45678900, -0x45678900,
-                     0x7fffff00, -0x80000000, -0x100))
-        self.assertEqual(audioop.lin2lin(datas[4], 4, 1),
-            b'\x00\x12\x45\xba\x7f\x80\xff')
-        self.assertEqual(audioop.lin2lin(datas[4], 4, 2),
-            packs[2](0, 0x1234, 0x4567, -0x4568, 0x7fff, -0x8000, -1))
-        self.assertEqual(audioop.lin2lin(datas[4], 4, 3),
-            packs[3](0, 0x123456, 0x456789, -0x45678a,
-                     0x7fffff, -0x800000, -1))
-
-    def test_adpcm2lin(self):
-        self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 1, None),
-                         (b'\x00\x00\x00\xff\x00\xff', (-179, 40)))
-        self.assertEqual(audioop.adpcm2lin(bytearray(b'\x07\x7f\x7f'), 1, None),
-                         (b'\x00\x00\x00\xff\x00\xff', (-179, 40)))
-        self.assertEqual(audioop.adpcm2lin(memoryview(b'\x07\x7f\x7f'), 1, None),
-                         (b'\x00\x00\x00\xff\x00\xff', (-179, 40)))
-        self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 2, None),
-                         (packs[2](0, 0xb, 0x29, -0x16, 0x72, -0xb3), (-179, 40)))
-        self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 3, None),
-                         (packs[3](0, 0xb00, 0x2900, -0x1600, 0x7200,
-                                   -0xb300), (-179, 40)))
-        self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 4, None),
-                         (packs[4](0, 0xb0000, 0x290000, -0x160000, 0x720000,
-                                   -0xb30000), (-179, 40)))
-
-        # Very cursory test
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.adpcm2lin(b'\0' * 5, w, None),
-                             (b'\0' * w * 10, (0, 0)))
-
-    def test_lin2adpcm(self):
-        self.assertEqual(audioop.lin2adpcm(datas[1], 1, None),
-                         (b'\x07\x7f\x7f', (-221, 39)))
-        self.assertEqual(audioop.lin2adpcm(bytearray(datas[1]), 1, None),
-                         (b'\x07\x7f\x7f', (-221, 39)))
-        self.assertEqual(audioop.lin2adpcm(memoryview(datas[1]), 1, None),
-                         (b'\x07\x7f\x7f', (-221, 39)))
-        for w in 2, 3, 4:
-            self.assertEqual(audioop.lin2adpcm(datas[w], w, None),
-                             (b'\x07\x7f\x7f', (31, 39)))
-
-        # Very cursory test
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.lin2adpcm(b'\0' * w * 10, w, None),
-                             (b'\0' * 5, (0, 0)))
-
-    def test_invalid_adpcm_state(self):
-        # state must be a tuple or None, not an integer
-        self.assertRaises(TypeError, audioop.adpcm2lin, b'\0', 1, 555)
-        self.assertRaises(TypeError, audioop.lin2adpcm, b'\0', 1, 555)
-        # Issues #24456, #24457: index out of range
-        self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (0, -1))
-        self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (0, 89))
-        self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (0, -1))
-        self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (0, 89))
-        # value out of range
-        self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (-0x8001, 0))
-        self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (0x8000, 0))
-        self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (-0x8001, 0))
-        self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (0x8000, 0))
-
-    def test_lin2alaw(self):
-        self.assertEqual(audioop.lin2alaw(datas[1], 1),
-                         b'\xd5\x87\xa4\x24\xaa\x2a\x5a')
-        self.assertEqual(audioop.lin2alaw(bytearray(datas[1]), 1),
-                         b'\xd5\x87\xa4\x24\xaa\x2a\x5a')
-        self.assertEqual(audioop.lin2alaw(memoryview(datas[1]), 1),
-                         b'\xd5\x87\xa4\x24\xaa\x2a\x5a')
-        for w in 2, 3, 4:
-            self.assertEqual(audioop.lin2alaw(datas[w], w),
-                             b'\xd5\x87\xa4\x24\xaa\x2a\x55')
-
-    def test_alaw2lin(self):
-        encoded = b'\x00\x03\x24\x2a\x51\x54\x55\x58\x6b\x71\x7f'\
-                  b'\x80\x83\xa4\xaa\xd1\xd4\xd5\xd8\xeb\xf1\xff'
-        src = [-688, -720, -2240, -4032, -9, -3, -1, -27, -244, -82, -106,
-               688, 720, 2240, 4032, 9, 3, 1, 27, 244, 82, 106]
-        for w in 1, 2, 3, 4:
-            decoded = packs[w](*(x << (w * 8) >> 13 for x in src))
-            self.assertEqual(audioop.alaw2lin(encoded, w), decoded)
-            self.assertEqual(audioop.alaw2lin(bytearray(encoded), w), decoded)
-            self.assertEqual(audioop.alaw2lin(memoryview(encoded), w), decoded)
-
-        encoded = bytes(range(256))
-        for w in 2, 3, 4:
-            decoded = audioop.alaw2lin(encoded, w)
-            self.assertEqual(audioop.lin2alaw(decoded, w), encoded)
-
-    def test_lin2ulaw(self):
-        self.assertEqual(audioop.lin2ulaw(datas[1], 1),
-                         b'\xff\xad\x8e\x0e\x80\x00\x67')
-        self.assertEqual(audioop.lin2ulaw(bytearray(datas[1]), 1),
-                         b'\xff\xad\x8e\x0e\x80\x00\x67')
-        self.assertEqual(audioop.lin2ulaw(memoryview(datas[1]), 1),
-                         b'\xff\xad\x8e\x0e\x80\x00\x67')
-        for w in 2, 3, 4:
-            self.assertEqual(audioop.lin2ulaw(datas[w], w),
-                             b'\xff\xad\x8e\x0e\x80\x00\x7e')
-
-    def test_ulaw2lin(self):
-        encoded = b'\x00\x0e\x28\x3f\x57\x6a\x76\x7c\x7e\x7f'\
-                  b'\x80\x8e\xa8\xbf\xd7\xea\xf6\xfc\xfe\xff'
-        src = [-8031, -4447, -1471, -495, -163, -53, -18, -6, -2, 0,
-               8031, 4447, 1471, 495, 163, 53, 18, 6, 2, 0]
-        for w in 1, 2, 3, 4:
-            decoded = packs[w](*(x << (w * 8) >> 14 for x in src))
-            self.assertEqual(audioop.ulaw2lin(encoded, w), decoded)
-            self.assertEqual(audioop.ulaw2lin(bytearray(encoded), w), decoded)
-            self.assertEqual(audioop.ulaw2lin(memoryview(encoded), w), decoded)
-
-        # Current u-law implementation has two codes fo 0: 0x7f and 0xff.
-        encoded = bytes(range(127)) + bytes(range(128, 256))
-        for w in 2, 3, 4:
-            decoded = audioop.ulaw2lin(encoded, w)
-            self.assertEqual(audioop.lin2ulaw(decoded, w), encoded)
-
-    def test_mul(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.mul(b'', w, 2), b'')
-            self.assertEqual(audioop.mul(bytearray(), w, 2), b'')
-            self.assertEqual(audioop.mul(memoryview(b''), w, 2), b'')
-            self.assertEqual(audioop.mul(datas[w], w, 0),
-                             b'\0' * len(datas[w]))
-            self.assertEqual(audioop.mul(datas[w], w, 1),
-                             datas[w])
-        self.assertEqual(audioop.mul(datas[1], 1, 2),
-                         b'\x00\x24\x7f\x80\x7f\x80\xfe')
-        self.assertEqual(audioop.mul(datas[2], 2, 2),
-                packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2))
-        self.assertEqual(audioop.mul(datas[3], 3, 2),
-                packs[3](0, 0x2468ac, 0x7fffff, -0x800000,
-                         0x7fffff, -0x800000, -2))
-        self.assertEqual(audioop.mul(datas[4], 4, 2),
-                packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000,
-                         0x7fffffff, -0x80000000, -2))
-
-    def test_ratecv(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 8000, None),
-                             (b'', (-1, ((0, 0),))))
-            self.assertEqual(audioop.ratecv(bytearray(), w, 1, 8000, 8000, None),
-                             (b'', (-1, ((0, 0),))))
-            self.assertEqual(audioop.ratecv(memoryview(b''), w, 1, 8000, 8000, None),
-                             (b'', (-1, ((0, 0),))))
-            self.assertEqual(audioop.ratecv(b'', w, 5, 8000, 8000, None),
-                             (b'', (-1, ((0, 0),) * 5)))
-            self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 16000, None),
-                             (b'', (-2, ((0, 0),))))
-            self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None)[0],
-                             datas[w])
-            self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 1, 0)[0],
-                             datas[w])
-
-        state = None
-        d1, state = audioop.ratecv(b'\x00\x01\x02', 1, 1, 8000, 16000, state)
-        d2, state = audioop.ratecv(b'\x00\x01\x02', 1, 1, 8000, 16000, state)
-        self.assertEqual(d1 + d2, b'\000\000\001\001\002\001\000\000\001\001\002')
-
-        for w in 1, 2, 3, 4:
-            d0, state0 = audioop.ratecv(datas[w], w, 1, 8000, 16000, None)
-            d, state = b'', None
-            for i in range(0, len(datas[w]), w):
-                d1, state = audioop.ratecv(datas[w][i:i + w], w, 1,
-                                           8000, 16000, state)
-                d += d1
-            self.assertEqual(d, d0)
-            self.assertEqual(state, state0)
-
-        expected = {
-            1: packs[1](0, 0x0d, 0x37, -0x26, 0x55, -0x4b, -0x14),
-            2: packs[2](0, 0x0da7, 0x3777, -0x2630, 0x5673, -0x4a64, -0x129a),
-            3: packs[3](0, 0x0da740, 0x377776, -0x262fca,
-                        0x56740c, -0x4a62fd, -0x1298c0),
-            4: packs[4](0, 0x0da740da, 0x37777776, -0x262fc962,
-                        0x56740da6, -0x4a62fc96, -0x1298bf26),
-        }
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 3, 1)[0],
-                             expected[w])
-            self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 30, 10)[0],
-                             expected[w])
-
-        self.assertRaises(TypeError, audioop.ratecv, b'', 1, 1, 8000, 8000, 42)
-        self.assertRaises(TypeError, audioop.ratecv,
-                          b'', 1, 1, 8000, 8000, (1, (42,)))
-
-    def test_reverse(self):
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.reverse(b'', w), b'')
-            self.assertEqual(audioop.reverse(bytearray(), w), b'')
-            self.assertEqual(audioop.reverse(memoryview(b''), w), b'')
-            self.assertEqual(audioop.reverse(packs[w](0, 1, 2), w),
-                             packs[w](2, 1, 0))
-
-    def test_tomono(self):
-        for w in 1, 2, 3, 4:
-            data1 = datas[w]
-            data2 = bytearray(2 * len(data1))
-            for k in range(w):
-                data2[k::2*w] = data1[k::w]
-            self.assertEqual(audioop.tomono(data2, w, 1, 0), data1)
-            self.assertEqual(audioop.tomono(data2, w, 0, 1), b'\0' * len(data1))
-            for k in range(w):
-                data2[k+w::2*w] = data1[k::w]
-            self.assertEqual(audioop.tomono(data2, w, 0.5, 0.5), data1)
-            self.assertEqual(audioop.tomono(bytearray(data2), w, 0.5, 0.5),
-                             data1)
-            self.assertEqual(audioop.tomono(memoryview(data2), w, 0.5, 0.5),
-                             data1)
-
-    def test_tostereo(self):
-        for w in 1, 2, 3, 4:
-            data1 = datas[w]
-            data2 = bytearray(2 * len(data1))
-            for k in range(w):
-                data2[k::2*w] = data1[k::w]
-            self.assertEqual(audioop.tostereo(data1, w, 1, 0), data2)
-            self.assertEqual(audioop.tostereo(data1, w, 0, 0), b'\0' * len(data2))
-            for k in range(w):
-                data2[k+w::2*w] = data1[k::w]
-            self.assertEqual(audioop.tostereo(data1, w, 1, 1), data2)
-            self.assertEqual(audioop.tostereo(bytearray(data1), w, 1, 1), data2)
-            self.assertEqual(audioop.tostereo(memoryview(data1), w, 1, 1),
-                             data2)
-
-    def test_findfactor(self):
-        self.assertEqual(audioop.findfactor(datas[2], datas[2]), 1.0)
-        self.assertEqual(audioop.findfactor(bytearray(datas[2]),
-                                            bytearray(datas[2])), 1.0)
-        self.assertEqual(audioop.findfactor(memoryview(datas[2]),
-                                            memoryview(datas[2])), 1.0)
-        self.assertEqual(audioop.findfactor(b'\0' * len(datas[2]), datas[2]),
-                         0.0)
-
-    def test_findfit(self):
-        self.assertEqual(audioop.findfit(datas[2], datas[2]), (0, 1.0))
-        self.assertEqual(audioop.findfit(bytearray(datas[2]),
-                                         bytearray(datas[2])), (0, 1.0))
-        self.assertEqual(audioop.findfit(memoryview(datas[2]),
-                                         memoryview(datas[2])), (0, 1.0))
-        self.assertEqual(audioop.findfit(datas[2], packs[2](1, 2, 0)),
-                         (1, 8038.8))
-        self.assertEqual(audioop.findfit(datas[2][:-2] * 5 + datas[2], datas[2]),
-                         (30, 1.0))
-
-    def test_findmax(self):
-        self.assertEqual(audioop.findmax(datas[2], 1), 5)
-        self.assertEqual(audioop.findmax(bytearray(datas[2]), 1), 5)
-        self.assertEqual(audioop.findmax(memoryview(datas[2]), 1), 5)
-
-    def test_getsample(self):
-        for w in 1, 2, 3, 4:
-            data = packs[w](0, 1, -1, maxvalues[w], minvalues[w])
-            self.assertEqual(audioop.getsample(data, w, 0), 0)
-            self.assertEqual(audioop.getsample(bytearray(data), w, 0), 0)
-            self.assertEqual(audioop.getsample(memoryview(data), w, 0), 0)
-            self.assertEqual(audioop.getsample(data, w, 1), 1)
-            self.assertEqual(audioop.getsample(data, w, 2), -1)
-            self.assertEqual(audioop.getsample(data, w, 3), maxvalues[w])
-            self.assertEqual(audioop.getsample(data, w, 4), minvalues[w])
-
-    def test_byteswap(self):
-        swapped_datas = {
-            1: datas[1],
-            2: packs[2](0, 0x3412, 0x6745, -0x6646, -0x81, 0x80, -1),
-            3: packs[3](0, 0x563412, -0x7698bb, 0x7798ba, -0x81, 0x80, -1),
-            4: packs[4](0, 0x78563412, -0x547698bb, 0x557698ba,
-                        -0x81, 0x80, -1),
-        }
-        for w in 1, 2, 3, 4:
-            self.assertEqual(audioop.byteswap(b'', w), b'')
-            self.assertEqual(audioop.byteswap(datas[w], w), swapped_datas[w])
-            self.assertEqual(audioop.byteswap(swapped_datas[w], w), datas[w])
-            self.assertEqual(audioop.byteswap(bytearray(datas[w]), w),
-                             swapped_datas[w])
-            self.assertEqual(audioop.byteswap(memoryview(datas[w]), w),
-                             swapped_datas[w])
-
-    def test_negativelen(self):
-        # from issue 3306, previously it segfaulted
-        self.assertRaises(audioop.error,
-            audioop.findmax, bytes(range(256)), -2392392)
-
-    def test_issue7673(self):
-        state = None
-        for data, size in INVALID_DATA:
-            size2 = size
-            self.assertRaises(audioop.error, audioop.getsample, data, size, 0)
-            self.assertRaises(audioop.error, audioop.max, data, size)
-            self.assertRaises(audioop.error, audioop.minmax, data, size)
-            self.assertRaises(audioop.error, audioop.avg, data, size)
-            self.assertRaises(audioop.error, audioop.rms, data, size)
-            self.assertRaises(audioop.error, audioop.avgpp, data, size)
-            self.assertRaises(audioop.error, audioop.maxpp, data, size)
-            self.assertRaises(audioop.error, audioop.cross, data, size)
-            self.assertRaises(audioop.error, audioop.mul, data, size, 1.0)
-            self.assertRaises(audioop.error, audioop.tomono, data, size, 0.5, 0.5)
-            self.assertRaises(audioop.error, audioop.tostereo, data, size, 0.5, 0.5)
-            self.assertRaises(audioop.error, audioop.add, data, data, size)
-            self.assertRaises(audioop.error, audioop.bias, data, size, 0)
-            self.assertRaises(audioop.error, audioop.reverse, data, size)
-            self.assertRaises(audioop.error, audioop.lin2lin, data, size, size2)
-            self.assertRaises(audioop.error, audioop.ratecv, data, size, 1, 1, 1, state)
-            self.assertRaises(audioop.error, audioop.lin2ulaw, data, size)
-            self.assertRaises(audioop.error, audioop.lin2alaw, data, size)
-            self.assertRaises(audioop.error, audioop.lin2adpcm, data, size, state)
-
-    def test_string(self):
-        data = 'abcd'
-        size = 2
-        self.assertRaises(TypeError, audioop.getsample, data, size, 0)
-        self.assertRaises(TypeError, audioop.max, data, size)
-        self.assertRaises(TypeError, audioop.minmax, data, size)
-        self.assertRaises(TypeError, audioop.avg, data, size)
-        self.assertRaises(TypeError, audioop.rms, data, size)
-        self.assertRaises(TypeError, audioop.avgpp, data, size)
-        self.assertRaises(TypeError, audioop.maxpp, data, size)
-        self.assertRaises(TypeError, audioop.cross, data, size)
-        self.assertRaises(TypeError, audioop.mul, data, size, 1.0)
-        self.assertRaises(TypeError, audioop.tomono, data, size, 0.5, 0.5)
-        self.assertRaises(TypeError, audioop.tostereo, data, size, 0.5, 0.5)
-        self.assertRaises(TypeError, audioop.add, data, data, size)
-        self.assertRaises(TypeError, audioop.bias, data, size, 0)
-        self.assertRaises(TypeError, audioop.reverse, data, size)
-        self.assertRaises(TypeError, audioop.lin2lin, data, size, size)
-        self.assertRaises(TypeError, audioop.ratecv, data, size, 1, 1, 1, None)
-        self.assertRaises(TypeError, audioop.lin2ulaw, data, size)
-        self.assertRaises(TypeError, audioop.lin2alaw, data, size)
-        self.assertRaises(TypeError, audioop.lin2adpcm, data, size, None)
-
-    def test_wrongsize(self):
-        data = b'abcdefgh'
-        state = None
-        for size in (-1, 0, 5, 1024):
-            self.assertRaises(audioop.error, audioop.ulaw2lin, data, size)
-            self.assertRaises(audioop.error, audioop.alaw2lin, data, size)
-            self.assertRaises(audioop.error, audioop.adpcm2lin, data, size, state)
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_audit.py b/Lib/test/test_audit.py
index 0b69864751d83d..cd0a4e2264865d 100644
--- a/Lib/test/test_audit.py
+++ b/Lib/test/test_audit.py
@@ -19,7 +19,7 @@ class AuditTest(unittest.TestCase):
     maxDiff = None
 
     @support.requires_subprocess()
-    def do_test(self, *args):
+    def run_test_in_subprocess(self, *args):
         with subprocess.Popen(
             [sys.executable, "-X utf8", AUDIT_TESTS_PY, *args],
             encoding="utf-8",
@@ -27,27 +27,26 @@ def do_test(self, *args):
             stderr=subprocess.PIPE,
         ) as p:
             p.wait()
-            sys.stdout.writelines(p.stdout)
-            sys.stderr.writelines(p.stderr)
-            if p.returncode:
-                self.fail("".join(p.stderr))
+            return p, p.stdout.read(), p.stderr.read()
 
-    @support.requires_subprocess()
-    def run_python(self, *args):
+    def do_test(self, *args):
+        proc, stdout, stderr = self.run_test_in_subprocess(*args)
+
+        sys.stdout.write(stdout)
+        sys.stderr.write(stderr)
+        if proc.returncode:
+            self.fail(stderr)
+
+    def run_python(self, *args, expect_stderr=False):
         events = []
-        with subprocess.Popen(
-            [sys.executable, "-X utf8", AUDIT_TESTS_PY, *args],
-            encoding="utf-8",
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-        ) as p:
-            p.wait()
-            sys.stderr.writelines(p.stderr)
-            return (
-                p.returncode,
-                [line.strip().partition(" ") for line in p.stdout],
-                "".join(p.stderr),
-            )
+        proc, stdout, stderr = self.run_test_in_subprocess(*args)
+        if not expect_stderr or support.verbose:
+            sys.stderr.write(stderr)
+        return (
+            proc.returncode,
+            [line.strip().partition(" ") for line in stdout.splitlines()],
+            stderr,
+        )
 
     def test_basic(self):
         self.do_test("test_basic")
@@ -210,6 +209,8 @@ def test_threading(self):
         expected = [
             ("_thread.start_new_thread", "(<test_func>, (), None)"),
             ("test.test_func", "()"),
+            ("_thread.start_joinable_thread", "(<test_func>,)"),
+            ("test.test_func", "()"),
         ]
 
         self.assertEqual(actual, expected)
@@ -256,6 +257,39 @@ def test_not_in_gc(self):
         if returncode:
             self.fail(stderr)
 
+    def test_time(self):
+        returncode, events, stderr = self.run_python("test_time", "print")
+        if returncode:
+            self.fail(stderr)
+
+        if support.verbose:
+            print(*events, sep='\n')
+
+        actual = [(ev[0], ev[2]) for ev in events]
+        expected = [("time.sleep", "0"),
+                    ("time.sleep", "0.0625"),
+                    ("time.sleep", "-1")]
+
+        self.assertEqual(actual, expected)
+
+    def test_time_fail(self):
+        returncode, events, stderr = self.run_python("test_time", "fail",
+                                                     expect_stderr=True)
+        self.assertNotEqual(returncode, 0)
+        self.assertIn('hook failed', stderr.splitlines()[-1])
+
+    def test_sys_monitoring_register_callback(self):
+        returncode, events, stderr = self.run_python("test_sys_monitoring_register_callback")
+        if returncode:
+            self.fail(stderr)
+
+        if support.verbose:
+            print(*events, sep='\n')
+        actual = [(ev[0], ev[2]) for ev in events]
+        expected = [("sys.monitoring.register_callback", "(None,)")]
+
+        self.assertEqual(actual, expected)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_binascii.py b/Lib/test/test_binascii.py
index a2d7d0293ce1ae..82dea8a6d731ea 100644
--- a/Lib/test/test_binascii.py
+++ b/Lib/test/test_binascii.py
@@ -5,6 +5,7 @@
 import array
 import re
 from test.support import bigmemtest, _1G, _4G
+from test.support.hypothesis_helper import hypothesis
 
 
 # Note: "*_hex" functions are aliases for "(un)hexlify"
@@ -27,6 +28,14 @@ class BinASCIITest(unittest.TestCase):
     def setUp(self):
         self.data = self.type2test(self.rawdata)
 
+    def assertConversion(self, original, converted, restored, **kwargs):
+        self.assertIsInstance(original, bytes)
+        self.assertIsInstance(converted, bytes)
+        self.assertIsInstance(restored, bytes)
+        if converted:
+            self.assertLess(max(converted), 128)
+        self.assertEqual(original, restored, msg=f'{self.type2test=} {kwargs=}')
+
     def test_exceptions(self):
         # Check module exceptions
         self.assertTrue(issubclass(binascii.Error, Exception))
@@ -52,9 +61,7 @@ def test_returned_value(self):
                 self.fail("{}/{} conversion raises {!r}".format(fb, fa, err))
             self.assertEqual(res, raw, "{}/{} conversion: "
                              "{!r} != {!r}".format(fb, fa, res, raw))
-            self.assertIsInstance(res, bytes)
-            self.assertIsInstance(a, bytes)
-            self.assertLess(max(a), 128)
+            self.assertConversion(raw, a, res)
         self.assertIsInstance(binascii.crc_hqx(raw, 0), int)
         self.assertIsInstance(binascii.crc32(raw), int)
 
@@ -222,6 +229,15 @@ def test_uu(self):
         with self.assertRaises(TypeError):
             binascii.b2a_uu(b"", True)
 
+    @hypothesis.given(
+        binary=hypothesis.strategies.binary(max_size=45),
+        backtick=hypothesis.strategies.booleans(),
+    )
+    def test_b2a_roundtrip(self, binary, backtick):
+        converted = binascii.b2a_uu(self.type2test(binary), backtick=backtick)
+        restored = binascii.a2b_uu(self.type2test(converted))
+        self.assertConversion(binary, converted, restored, backtick=backtick)
+
     def test_crc_hqx(self):
         crc = binascii.crc_hqx(self.type2test(b"Test the CRC-32 of"), 0)
         crc = binascii.crc_hqx(self.type2test(b" this string."), crc)
@@ -259,6 +275,12 @@ def test_hex(self):
         self.assertEqual(binascii.hexlify(self.type2test(s)), t)
         self.assertEqual(binascii.unhexlify(self.type2test(t)), u)
 
+    @hypothesis.given(binary=hypothesis.strategies.binary())
+    def test_hex_roundtrip(self, binary):
+        converted = binascii.hexlify(self.type2test(binary))
+        restored = binascii.unhexlify(self.type2test(converted))
+        self.assertConversion(binary, converted, restored)
+
     def test_hex_separator(self):
         """Test that hexlify and b2a_hex are binary versions of bytes.hex."""
         # Logic of separators is tested in test_bytes.py.  This checks that
@@ -373,6 +395,21 @@ def test_qp(self):
         self.assertEqual(b2a_qp(type2test(b'a.\n')), b'a.\n')
         self.assertEqual(b2a_qp(type2test(b'.a')[:-1]), b'=2E')
 
+    @hypothesis.given(
+        binary=hypothesis.strategies.binary(),
+        quotetabs=hypothesis.strategies.booleans(),
+        istext=hypothesis.strategies.booleans(),
+        header=hypothesis.strategies.booleans(),
+    )
+    def test_b2a_qp_a2b_qp_round_trip(self, binary, quotetabs, istext, header):
+        converted = binascii.b2a_qp(
+            self.type2test(binary),
+            quotetabs=quotetabs, istext=istext, header=header,
+        )
+        restored = binascii.a2b_qp(self.type2test(converted), header=header)
+        self.assertConversion(binary, converted, restored,
+                              quotetabs=quotetabs, istext=istext, header=header)
+
     def test_empty_string(self):
         # A test for SF bug #1022953.  Make sure SystemError is not raised.
         empty = self.type2test(b'')
@@ -428,6 +465,21 @@ def test_b2a_base64_newline(self):
         self.assertEqual(binascii.b2a_base64(b, newline=False),
                          b'aGVsbG8=')
 
+    @hypothesis.given(
+        binary=hypothesis.strategies.binary(),
+        newline=hypothesis.strategies.booleans(),
+    )
+    def test_base64_roundtrip(self, binary, newline):
+        converted = binascii.b2a_base64(self.type2test(binary), newline=newline)
+        restored = binascii.a2b_base64(self.type2test(converted))
+        self.assertConversion(binary, converted, restored, newline=newline)
+
+    def test_c_contiguity(self):
+        m = memoryview(bytearray(b'noncontig'))
+        noncontig_writable = m[::-2]
+        with self.assertRaises(BufferError):
+            binascii.b2a_hex(noncontig_writable)
+
 
 class ArrayBinASCIITest(BinASCIITest):
     def type2test(self, s):
diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py
index 94fc9d4436b717..72a06d6af450e3 100644
--- a/Lib/test/test_buffer.py
+++ b/Lib/test/test_buffer.py
@@ -24,6 +24,7 @@
 import sys, array, io, os
 from decimal import Decimal
 from fractions import Fraction
+from test.support import warnings_helper
 
 try:
     from _testbuffer import *
@@ -1028,6 +1029,7 @@ def match(req, flag):
                     ndim=ndim, shape=shape, strides=strides,
                     lst=lst, sliced=sliced)
 
+    @support.requires_resource('cpu')
     def test_ndarray_getbuf(self):
         requests = (
             # distinct flags
@@ -2759,6 +2761,7 @@ def iter_roundtrip(ex, m, items, fmt):
             m = memoryview(ex)
             iter_roundtrip(ex, m, items, fmt)
 
+    @support.requires_resource('cpu')
     def test_memoryview_cast_1D_ND(self):
         # Cast between C-contiguous buffers. At least one buffer must
         # be 1D, at least one format must be 'c', 'b' or 'B'.
@@ -3217,12 +3220,6 @@ def test_memoryview_compare_special_cases(self):
         nd[0] = (-1, float('nan'))
         self.assertNotEqual(memoryview(nd), nd)
 
-        # Depends on issue #15625: the struct module does not understand 'u'.
-        a = array.array('u', 'xyz')
-        v = memoryview(a)
-        self.assertNotEqual(a, v)
-        self.assertNotEqual(v, a)
-
         # Some ctypes format strings are unknown to the struct module.
         if ctypes:
             # format: "T{>l:x:>l:y:}"
@@ -3236,6 +3233,15 @@ class BEPoint(ctypes.BigEndianStructure):
             self.assertNotEqual(point, a)
             self.assertRaises(NotImplementedError, a.tolist)
 
+    @warnings_helper.ignore_warnings(category=DeprecationWarning)  # gh-80480 array('u')
+    def test_memoryview_compare_special_cases_deprecated_u_type_code(self):
+
+        # Depends on issue #15625: the struct module does not understand 'u'.
+        a = array.array('u', 'xyz')
+        v = memoryview(a)
+        self.assertNotEqual(a, v)
+        self.assertNotEqual(v, a)
+
     def test_memoryview_compare_ndim_zero(self):
 
         nd1 = ndarray(1729, shape=[], format='@L')
@@ -4718,7 +4724,7 @@ def __buffer__(self, flags):
         with self.assertRaises(ValueError):
             c.buffer.tobytes()
 
-    def test_multiple_inheritance_buffer_last(self):
+    def test_multiple_inheritance_buffer_last_raising(self):
         class A:
             def __buffer__(self, flags):
                 raise RuntimeError("should not be called")
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 821710a7fa3286..5e66d58fd2cb18 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -18,6 +18,7 @@
 import sys
 import traceback
 import types
+import typing
 import unittest
 import warnings
 from contextlib import ExitStack
@@ -368,16 +369,17 @@ def f(): """doc"""
                   (1, False, 'doc', False, False),
                   (2, False, None, False, False)]
         for optval, *expected in values:
+            with self.subTest(optval=optval):
             # test both direct compilation and compilation via AST
-            codeobjs = []
-            codeobjs.append(compile(codestr, "<test>", "exec", optimize=optval))
-            tree = ast.parse(codestr)
-            codeobjs.append(compile(tree, "<test>", "exec", optimize=optval))
-            for code in codeobjs:
-                ns = {}
-                exec(code, ns)
-                rv = ns['f']()
-                self.assertEqual(rv, tuple(expected))
+                codeobjs = []
+                codeobjs.append(compile(codestr, "<test>", "exec", optimize=optval))
+                tree = ast.parse(codestr)
+                codeobjs.append(compile(tree, "<test>", "exec", optimize=optval))
+                for code in codeobjs:
+                    ns = {}
+                    exec(code, ns)
+                    rv = ns['f']()
+                    self.assertEqual(rv, tuple(expected))
 
     def test_compile_top_level_await_no_coro(self):
         """Make sure top level non-await codes get the correct coroutine flags"""
@@ -516,6 +518,30 @@ def test_compile_async_generator(self):
         exec(co, glob)
         self.assertEqual(type(glob['ticker']()), AsyncGeneratorType)
 
+    def test_compile_ast(self):
+        args = ("a*(1+2)", "f.py", "exec")
+        raw = compile(*args, flags = ast.PyCF_ONLY_AST).body[0]
+        opt1 = compile(*args, flags = ast.PyCF_OPTIMIZED_AST).body[0]
+        opt2 = compile(ast.parse(args[0]), *args[1:], flags = ast.PyCF_OPTIMIZED_AST).body[0]
+
+        for tree in (raw, opt1, opt2):
+            self.assertIsInstance(tree.value, ast.BinOp)
+            self.assertIsInstance(tree.value.op, ast.Mult)
+            self.assertIsInstance(tree.value.left, ast.Name)
+            self.assertEqual(tree.value.left.id, 'a')
+
+        raw_right = raw.value.right  # expect BinOp(1, '+', 2)
+        self.assertIsInstance(raw_right, ast.BinOp)
+        self.assertIsInstance(raw_right.left, ast.Constant)
+        self.assertEqual(raw_right.left.value, 1)
+        self.assertIsInstance(raw_right.right, ast.Constant)
+        self.assertEqual(raw_right.right.value, 2)
+
+        for opt in [opt1, opt2]:
+            opt_right = opt.value.right  # expect Constant(3)
+            self.assertIsInstance(opt_right, ast.Constant)
+            self.assertEqual(opt_right.value, 3)
+
     def test_delattr(self):
         sys.spam = 1
         delattr(sys, 'spam')
@@ -601,6 +627,11 @@ def __dir__(self):
         # test that object has a __dir__()
         self.assertEqual(sorted([].__dir__()), dir([]))
 
+    def test___ne__(self):
+        self.assertFalse(None.__ne__(None))
+        self.assertTrue(None.__ne__(0))
+        self.assertTrue(None.__ne__("abc"))
+
     def test_divmod(self):
         self.assertEqual(divmod(12, 7), (1, 5))
         self.assertEqual(divmod(-12, 7), (-2, 2))
@@ -926,6 +957,7 @@ def test_filter_pickle(self):
             f2 = filter(filter_char, "abcdeabcde")
             self.check_iter_pickle(f1, list(f2), proto)
 
+    @support.requires_resource('cpu')
     def test_filter_dealloc(self):
         # Tests recursive deallocation of nested filter objects using the
         # thrashcan mechanism. See gh-102356 for more details.
@@ -1613,7 +1645,7 @@ def test_setattr(self):
         msg = r"^attribute name must be string, not 'int'$"
         self.assertRaisesRegex(TypeError, msg, setattr, sys, 1, 'spam')
 
-    # test_str(): see test_unicode.py and test_bytes.py for str() tests.
+    # test_str(): see test_str.py and test_bytes.py for str() tests.
 
     def test_sum(self):
         self.assertEqual(sum([]), 0)
@@ -2012,6 +2044,23 @@ def test_bytearray_extend_error(self):
         bad_iter = map(int, "X")
         self.assertRaises(ValueError, array.extend, bad_iter)
 
+    def test_bytearray_join_with_misbehaving_iterator(self):
+        # Issue #112625
+        array = bytearray(b',')
+        def iterator():
+            array.clear()
+            yield b'A'
+            yield b'B'
+        self.assertRaises(BufferError, array.join, iterator())
+
+    def test_bytearray_join_with_custom_iterator(self):
+        # Issue #112625
+        array = bytearray(b',')
+        def iterator():
+            yield b'A'
+            yield b'B'
+        self.assertEqual(bytearray(b'A,B'), array.join(iterator()))
+
     def test_construct_singletons(self):
         for const in None, Ellipsis, NotImplemented:
             tp = type(const)
@@ -2176,8 +2225,6 @@ def _run_child(self, child, terminal_input):
         if pid == 0:
             # Child
             try:
-                # Make sure we don't get stuck if there's a problem
-                signal.alarm(2)
                 os.close(r)
                 with open(w, "w") as wpipe:
                     child(wpipe)
@@ -2227,7 +2274,10 @@ def _run_child(self, child, terminal_input):
 
         return lines
 
-    def check_input_tty(self, prompt, terminal_input, stdio_encoding=None):
+    def check_input_tty(self, prompt, terminal_input, stdio_encoding=None, *,
+                        expected=None,
+                        stdin_errors='surrogateescape',
+                        stdout_errors='replace'):
         if not sys.stdin.isatty() or not sys.stdout.isatty():
             self.skipTest("stdin and stdout must be ttys")
         def child(wpipe):
@@ -2235,22 +2285,26 @@ def child(wpipe):
             if stdio_encoding:
                 sys.stdin = io.TextIOWrapper(sys.stdin.detach(),
                                              encoding=stdio_encoding,
-                                             errors='surrogateescape')
+                                             errors=stdin_errors)
                 sys.stdout = io.TextIOWrapper(sys.stdout.detach(),
                                               encoding=stdio_encoding,
-                                              errors='replace')
+                                              errors=stdout_errors)
             print("tty =", sys.stdin.isatty() and sys.stdout.isatty(), file=wpipe)
-            print(ascii(input(prompt)), file=wpipe)
+            try:
+                print(ascii(input(prompt)), file=wpipe)
+            except BaseException as e:
+                print(ascii(f'{e.__class__.__name__}: {e!s}'), file=wpipe)
         lines = self.run_child(child, terminal_input + b"\r\n")
         # Check we did exercise the GNU readline path
         self.assertIn(lines[0], {'tty = True', 'tty = False'})
         if lines[0] != 'tty = True':
             self.skipTest("standard IO in should have been a tty")
         input_result = eval(lines[1])   # ascii() -> eval() roundtrip
-        if stdio_encoding:
-            expected = terminal_input.decode(stdio_encoding, 'surrogateescape')
-        else:
-            expected = terminal_input.decode(sys.stdin.encoding)  # what else?
+        if expected is None:
+            if stdio_encoding:
+                expected = terminal_input.decode(stdio_encoding, 'surrogateescape')
+            else:
+                expected = terminal_input.decode(sys.stdin.encoding)  # what else?
         self.assertEqual(input_result, expected)
 
     def test_input_tty(self):
@@ -2271,13 +2325,32 @@ def skip_if_readline(self):
     def test_input_tty_non_ascii(self):
         self.skip_if_readline()
         # Check stdin/stdout encoding is used when invoking PyOS_Readline()
-        self.check_input_tty("prompté", b"quux\xe9", "utf-8")
+        self.check_input_tty("prompté", b"quux\xc3\xa9", "utf-8")
 
     def test_input_tty_non_ascii_unicode_errors(self):
         self.skip_if_readline()
         # Check stdin/stdout error handler is used when invoking PyOS_Readline()
         self.check_input_tty("prompté", b"quux\xe9", "ascii")
 
+    def test_input_tty_null_in_prompt(self):
+        self.check_input_tty("prompt\0", b"",
+                expected='ValueError: input: prompt string cannot contain '
+                         'null characters')
+
+    def test_input_tty_nonencodable_prompt(self):
+        self.skip_if_readline()
+        self.check_input_tty("prompté", b"quux", "ascii", stdout_errors='strict',
+                expected="UnicodeEncodeError: 'ascii' codec can't encode "
+                         "character '\\xe9' in position 6: ordinal not in "
+                         "range(128)")
+
+    def test_input_tty_nondecodable_input(self):
+        self.skip_if_readline()
+        self.check_input_tty("prompt", b"quux\xe9", "ascii", stdin_errors='strict',
+                expected="UnicodeDecodeError: 'ascii' codec can't decode "
+                         "byte 0xe9 in position 4: ordinal not in "
+                         "range(128)")
+
     def test_input_no_stdout_fileno(self):
         # Issue #24402: If stdin is the original terminal but stdout.fileno()
         # fails, do not use the original stdout file descriptor
@@ -2485,6 +2558,17 @@ def test_type_qualname(self):
             A.__qualname__ = b'B'
         self.assertEqual(A.__qualname__, 'D.E')
 
+    def test_type_typeparams(self):
+        class A[T]:
+            pass
+        T, = A.__type_params__
+        self.assertIsInstance(T, typing.TypeVar)
+        A.__type_params__ = "whatever"
+        self.assertEqual(A.__type_params__, "whatever")
+        with self.assertRaises(TypeError):
+            del A.__type_params__
+        self.assertEqual(A.__type_params__, "whatever")
+
     def test_type_doc(self):
         for doc in 'x', '\xc4', '\U0001f40d', 'x\x00y', b'x', 42, None:
             A = type('A', (), {'__doc__': doc})
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index 7c62b722059d12..a3804a945f2e3a 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -46,6 +46,10 @@ def __index__(self):
 
 class BaseBytesTest:
 
+    def assertTypedEqual(self, actual, expected):
+        self.assertIs(type(actual), type(expected))
+        self.assertEqual(actual, expected)
+
     def test_basics(self):
         b = self.type2test()
         self.assertEqual(type(b), self.type2test)
@@ -1023,36 +1027,63 @@ def test_buffer_is_readonly(self):
             self.assertRaises(TypeError, f.readinto, b"")
 
     def test_custom(self):
-        class A:
-            def __bytes__(self):
-                return b'abc'
-        self.assertEqual(bytes(A()), b'abc')
-        class A: pass
-        self.assertRaises(TypeError, bytes, A())
-        class A:
-            def __bytes__(self):
-                return None
-        self.assertRaises(TypeError, bytes, A())
-        class A:
+        self.assertEqual(bytes(BytesSubclass(b'abc')), b'abc')
+        self.assertEqual(BytesSubclass(OtherBytesSubclass(b'abc')),
+                         BytesSubclass(b'abc'))
+        self.assertEqual(bytes(WithBytes(b'abc')), b'abc')
+        self.assertEqual(BytesSubclass(WithBytes(b'abc')), BytesSubclass(b'abc'))
+
+        class NoBytes: pass
+        self.assertRaises(TypeError, bytes, NoBytes())
+        self.assertRaises(TypeError, bytes, WithBytes('abc'))
+        self.assertRaises(TypeError, bytes, WithBytes(None))
+        class IndexWithBytes:
             def __bytes__(self):
                 return b'a'
             def __index__(self):
                 return 42
-        self.assertEqual(bytes(A()), b'a')
+        self.assertEqual(bytes(IndexWithBytes()), b'a')
         # Issue #25766
-        class A(str):
+        class StrWithBytes(str):
+            def __new__(cls, value):
+                self = str.__new__(cls, '\u20ac')
+                self.value = value
+                return self
             def __bytes__(self):
-                return b'abc'
-        self.assertEqual(bytes(A('\u20ac')), b'abc')
-        self.assertEqual(bytes(A('\u20ac'), 'iso8859-15'), b'\xa4')
+                return self.value
+        self.assertEqual(bytes(StrWithBytes(b'abc')), b'abc')
+        self.assertEqual(bytes(StrWithBytes(b'abc'), 'iso8859-15'), b'\xa4')
+        self.assertEqual(bytes(StrWithBytes(BytesSubclass(b'abc'))), b'abc')
+        self.assertEqual(BytesSubclass(StrWithBytes(b'abc')), BytesSubclass(b'abc'))
+        self.assertEqual(BytesSubclass(StrWithBytes(b'abc'), 'iso8859-15'),
+                         BytesSubclass(b'\xa4'))
+        self.assertEqual(BytesSubclass(StrWithBytes(BytesSubclass(b'abc'))),
+                         BytesSubclass(b'abc'))
+        self.assertEqual(BytesSubclass(StrWithBytes(OtherBytesSubclass(b'abc'))),
+                         BytesSubclass(b'abc'))
         # Issue #24731
-        class A:
+        self.assertTypedEqual(bytes(WithBytes(BytesSubclass(b'abc'))), BytesSubclass(b'abc'))
+        self.assertTypedEqual(BytesSubclass(WithBytes(BytesSubclass(b'abc'))),
+                              BytesSubclass(b'abc'))
+        self.assertTypedEqual(BytesSubclass(WithBytes(OtherBytesSubclass(b'abc'))),
+                              BytesSubclass(b'abc'))
+
+        class BytesWithBytes(bytes):
+            def __new__(cls, value):
+                self = bytes.__new__(cls, b'\xa4')
+                self.value = value
+                return self
             def __bytes__(self):
-                return OtherBytesSubclass(b'abc')
-        self.assertEqual(bytes(A()), b'abc')
-        self.assertIs(type(bytes(A())), OtherBytesSubclass)
-        self.assertEqual(BytesSubclass(A()), b'abc')
-        self.assertIs(type(BytesSubclass(A())), BytesSubclass)
+                return self.value
+        self.assertTypedEqual(bytes(BytesWithBytes(b'abc')), b'abc')
+        self.assertTypedEqual(BytesSubclass(BytesWithBytes(b'abc')),
+                              BytesSubclass(b'abc'))
+        self.assertTypedEqual(bytes(BytesWithBytes(BytesSubclass(b'abc'))),
+                              BytesSubclass(b'abc'))
+        self.assertTypedEqual(BytesSubclass(BytesWithBytes(BytesSubclass(b'abc'))),
+                              BytesSubclass(b'abc'))
+        self.assertTypedEqual(BytesSubclass(BytesWithBytes(OtherBytesSubclass(b'abc'))),
+                              BytesSubclass(b'abc'))
 
     # Test PyBytes_FromFormat()
     def test_from_format(self):
@@ -1354,7 +1385,7 @@ def do_tests(setitem):
             except ValueError:
                 pass
             try:
-                setitem(b, 0, None)
+                setitem(b, 0, object())
                 self.fail("Didn't raise TypeError")
             except TypeError:
                 pass
@@ -2069,6 +2100,12 @@ class BytesSubclass(bytes):
 class OtherBytesSubclass(bytes):
     pass
 
+class WithBytes:
+    def __init__(self, value):
+        self.value = value
+    def __bytes__(self):
+        return self.value
+
 class ByteArraySubclassTest(SubclassTest, unittest.TestCase):
     basetype = bytearray
     type2test = ByteArraySubclass
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
index e4dd7fc2100b62..1f0b9adc3698b4 100644
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -721,10 +721,10 @@ def testEOFError(self):
     @bigmemtest(size=_4G + 100, memuse=3.3)
     def testDecompress4G(self, size):
         # "Test BZ2Decompressor.decompress() with >4GiB input"
-        blocksize = 10 * 1024 * 1024
+        blocksize = min(10 * 1024 * 1024, size)
         block = random.randbytes(blocksize)
         try:
-            data = block * (size // blocksize + 1)
+            data = block * ((size-1) // blocksize + 1)
             compressed = bz2.compress(data)
             bz2d = BZ2Decompressor()
             decompressed = bz2d.decompress(compressed)
diff --git a/Lib/test/test_calendar.py b/Lib/test/test_calendar.py
index 24e472b5fee828..1f9ffc5e9a5c33 100644
--- a/Lib/test/test_calendar.py
+++ b/Lib/test/test_calendar.py
@@ -3,12 +3,13 @@
 
 from test import support
 from test.support.script_helper import assert_python_ok, assert_python_failure
-import time
-import locale
-import sys
+import contextlib
 import datetime
+import io
+import locale
 import os
-import warnings
+import sys
+import time
 
 # From https://en.wikipedia.org/wiki/Leap_year_starting_on_Saturday
 result_0_02_text = """\
@@ -550,26 +551,92 @@ def test_months(self):
             # verify it "acts like a sequence" in two forms of iteration
             self.assertEqual(value[::-1], list(reversed(value)))
 
-    def test_locale_calendars(self):
+    def test_locale_text_calendar(self):
+        try:
+            cal = calendar.LocaleTextCalendar(locale='')
+            local_weekday = cal.formatweekday(1, 10)
+            local_weekday_abbr = cal.formatweekday(1, 3)
+            local_month = cal.formatmonthname(2010, 10, 10)
+        except locale.Error:
+            # cannot set the system default locale -- skip rest of test
+            raise unittest.SkipTest('cannot set the system default locale')
+        self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_weekday_abbr, str)
+        self.assertIsInstance(local_month, str)
+        self.assertEqual(len(local_weekday), 10)
+        self.assertEqual(len(local_weekday_abbr), 3)
+        self.assertGreaterEqual(len(local_month), 10)
+
+        cal = calendar.LocaleTextCalendar(locale=None)
+        local_weekday = cal.formatweekday(1, 10)
+        local_weekday_abbr = cal.formatweekday(1, 3)
+        local_month = cal.formatmonthname(2010, 10, 10)
+        self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_weekday_abbr, str)
+        self.assertIsInstance(local_month, str)
+        self.assertEqual(len(local_weekday), 10)
+        self.assertEqual(len(local_weekday_abbr), 3)
+        self.assertGreaterEqual(len(local_month), 10)
+
+        cal = calendar.LocaleTextCalendar(locale='C')
+        local_weekday = cal.formatweekday(1, 10)
+        local_weekday_abbr = cal.formatweekday(1, 3)
+        local_month = cal.formatmonthname(2010, 10, 10)
+        self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_weekday_abbr, str)
+        self.assertIsInstance(local_month, str)
+        self.assertEqual(len(local_weekday), 10)
+        self.assertEqual(len(local_weekday_abbr), 3)
+        self.assertGreaterEqual(len(local_month), 10)
+
+    def test_locale_html_calendar(self):
+        try:
+            cal = calendar.LocaleHTMLCalendar(locale='')
+            local_weekday = cal.formatweekday(1)
+            local_month = cal.formatmonthname(2010, 10)
+        except locale.Error:
+            # cannot set the system default locale -- skip rest of test
+            raise unittest.SkipTest('cannot set the system default locale')
+        self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_month, str)
+
+        cal = calendar.LocaleHTMLCalendar(locale=None)
+        local_weekday = cal.formatweekday(1)
+        local_month = cal.formatmonthname(2010, 10)
+        self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_month, str)
+
+        cal = calendar.LocaleHTMLCalendar(locale='C')
+        local_weekday = cal.formatweekday(1)
+        local_month = cal.formatmonthname(2010, 10)
+        self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_month, str)
+
+    def test_locale_calendars_reset_locale_properly(self):
         # ensure that Locale{Text,HTML}Calendar resets the locale properly
         # (it is still not thread-safe though)
         old_october = calendar.TextCalendar().formatmonthname(2010, 10, 10)
         try:
             cal = calendar.LocaleTextCalendar(locale='')
             local_weekday = cal.formatweekday(1, 10)
+            local_weekday_abbr = cal.formatweekday(1, 3)
             local_month = cal.formatmonthname(2010, 10, 10)
         except locale.Error:
             # cannot set the system default locale -- skip rest of test
             raise unittest.SkipTest('cannot set the system default locale')
         self.assertIsInstance(local_weekday, str)
+        self.assertIsInstance(local_weekday_abbr, str)
         self.assertIsInstance(local_month, str)
         self.assertEqual(len(local_weekday), 10)
+        self.assertEqual(len(local_weekday_abbr), 3)
         self.assertGreaterEqual(len(local_month), 10)
+
         cal = calendar.LocaleHTMLCalendar(locale='')
         local_weekday = cal.formatweekday(1)
         local_month = cal.formatmonthname(2010, 10)
         self.assertIsInstance(local_weekday, str)
         self.assertIsInstance(local_month, str)
+
         new_october = calendar.TextCalendar().formatmonthname(2010, 10, 10)
         self.assertEqual(old_october, new_october)
 
@@ -590,6 +657,21 @@ def test_locale_calendar_formatweekday(self):
         except locale.Error:
             raise unittest.SkipTest('cannot set the en_US locale')
 
+    def test_locale_calendar_formatmonthname(self):
+        try:
+            # formatmonthname uses the same month names regardless of the width argument.
+            cal = calendar.LocaleTextCalendar(locale='en_US')
+            # For too short widths, a full name (with year) is used.
+            self.assertEqual(cal.formatmonthname(2022, 6, 2, withyear=False), "June")
+            self.assertEqual(cal.formatmonthname(2022, 6, 2, withyear=True), "June 2022")
+            self.assertEqual(cal.formatmonthname(2022, 6, 3, withyear=False), "June")
+            self.assertEqual(cal.formatmonthname(2022, 6, 3, withyear=True), "June 2022")
+            # For long widths, a centered name is used.
+            self.assertEqual(cal.formatmonthname(2022, 6, 10, withyear=False), "   June   ")
+            self.assertEqual(cal.formatmonthname(2022, 6, 15, withyear=True), "   June 2022   ")
+        except locale.Error:
+            raise unittest.SkipTest('cannot set the en_US locale')
+
     def test_locale_html_calendar_custom_css_class_month_name(self):
         try:
             cal = calendar.LocaleHTMLCalendar(locale='')
@@ -848,46 +930,104 @@ def conv(s):
     return s.replace('\n', os.linesep).encode()
 
 class CommandLineTestCase(unittest.TestCase):
-    def run_ok(self, *args):
+    def setUp(self):
+        self.runners = [self.run_cli_ok, self.run_cmd_ok]
+
+    @contextlib.contextmanager
+    def captured_stdout_with_buffer(self):
+        orig_stdout = sys.stdout
+        buffer = io.BytesIO()
+        sys.stdout = io.TextIOWrapper(buffer)
+        try:
+            yield sys.stdout
+        finally:
+            sys.stdout.flush()
+            sys.stdout.buffer.seek(0)
+            sys.stdout = orig_stdout
+
+    @contextlib.contextmanager
+    def captured_stderr_with_buffer(self):
+        orig_stderr = sys.stderr
+        buffer = io.BytesIO()
+        sys.stderr = io.TextIOWrapper(buffer)
+        try:
+            yield sys.stderr
+        finally:
+            sys.stderr.flush()
+            sys.stderr.buffer.seek(0)
+            sys.stderr = orig_stderr
+
+    def run_cli_ok(self, *args):
+        with self.captured_stdout_with_buffer() as stdout:
+            calendar.main(args)
+        return stdout.buffer.read()
+
+    def run_cmd_ok(self, *args):
         return assert_python_ok('-m', 'calendar', *args)[1]
 
-    def assertFailure(self, *args):
+    def assertCLIFails(self, *args):
+        with self.captured_stderr_with_buffer() as stderr:
+            self.assertRaises(SystemExit, calendar.main, args)
+        stderr = stderr.buffer.read()
+        self.assertIn(b'usage:', stderr)
+        return stderr
+
+    def assertCmdFails(self, *args):
         rc, stdout, stderr = assert_python_failure('-m', 'calendar', *args)
         self.assertIn(b'usage:', stderr)
         self.assertEqual(rc, 2)
+        return rc, stdout, stderr
+
+    def assertFailure(self, *args):
+        self.assertCLIFails(*args)
+        self.assertCmdFails(*args)
 
     def test_help(self):
-        stdout = self.run_ok('-h')
+        stdout = self.run_cmd_ok('-h')
         self.assertIn(b'usage:', stdout)
         self.assertIn(b'calendar.py', stdout)
         self.assertIn(b'--help', stdout)
 
+        # special case: stdout but sys.exit()
+        with self.captured_stdout_with_buffer() as output:
+            self.assertRaises(SystemExit, calendar.main, ['-h'])
+        output = output.buffer.read()
+        self.assertIn(b'usage:', output)
+        self.assertIn(b'--help', output)
+
     def test_illegal_arguments(self):
         self.assertFailure('-z')
         self.assertFailure('spam')
         self.assertFailure('2004', 'spam')
+        self.assertFailure('2004', '1', 'spam')
+        self.assertFailure('2004', '1', '1')
+        self.assertFailure('2004', '1', '1', 'spam')
         self.assertFailure('-t', 'html', '2004', '1')
 
     def test_output_current_year(self):
-        stdout = self.run_ok()
-        year = datetime.datetime.now().year
-        self.assertIn((' %s' % year).encode(), stdout)
-        self.assertIn(b'January', stdout)
-        self.assertIn(b'Mo Tu We Th Fr Sa Su', stdout)
+        for run in self.runners:
+            output = run()
+            year = datetime.datetime.now().year
+            self.assertIn(conv(' %s' % year), output)
+            self.assertIn(b'January', output)
+            self.assertIn(b'Mo Tu We Th Fr Sa Su', output)
 
     def test_output_year(self):
-        stdout = self.run_ok('2004')
-        self.assertEqual(stdout, conv(result_2004_text))
+        for run in self.runners:
+            output = run('2004')
+            self.assertEqual(output, conv(result_2004_text))
 
     def test_output_month(self):
-        stdout = self.run_ok('2004', '1')
-        self.assertEqual(stdout, conv(result_2004_01_text))
+        for run in self.runners:
+            output = run('2004', '1')
+            self.assertEqual(output, conv(result_2004_01_text))
 
     def test_option_encoding(self):
         self.assertFailure('-e')
         self.assertFailure('--encoding')
-        stdout = self.run_ok('--encoding', 'utf-16-le', '2004')
-        self.assertEqual(stdout, result_2004_text.encode('utf-16-le'))
+        for run in self.runners:
+            output = run('--encoding', 'utf-16-le', '2004')
+            self.assertEqual(output, result_2004_text.encode('utf-16-le'))
 
     def test_option_locale(self):
         self.assertFailure('-L')
@@ -905,66 +1045,75 @@ def test_option_locale(self):
                 locale.setlocale(locale.LC_TIME, oldlocale)
         except (locale.Error, ValueError):
             self.skipTest('cannot set the system default locale')
-        stdout = self.run_ok('--locale', lang, '--encoding', enc, '2004')
-        self.assertIn('2004'.encode(enc), stdout)
+        for run in self.runners:
+            for type in ('text', 'html'):
+                output = run(
+                    '--type', type, '--locale', lang, '--encoding', enc, '2004'
+                )
+                self.assertIn('2004'.encode(enc), output)
 
     def test_option_width(self):
         self.assertFailure('-w')
         self.assertFailure('--width')
         self.assertFailure('-w', 'spam')
-        stdout = self.run_ok('--width', '3', '2004')
-        self.assertIn(b'Mon Tue Wed Thu Fri Sat Sun', stdout)
+        for run in self.runners:
+            output = run('--width', '3', '2004')
+            self.assertIn(b'Mon Tue Wed Thu Fri Sat Sun', output)
 
     def test_option_lines(self):
         self.assertFailure('-l')
         self.assertFailure('--lines')
         self.assertFailure('-l', 'spam')
-        stdout = self.run_ok('--lines', '2', '2004')
-        self.assertIn(conv('December\n\nMo Tu We'), stdout)
+        for run in self.runners:
+            output = run('--lines', '2', '2004')
+            self.assertIn(conv('December\n\nMo Tu We'), output)
 
     def test_option_spacing(self):
         self.assertFailure('-s')
         self.assertFailure('--spacing')
         self.assertFailure('-s', 'spam')
-        stdout = self.run_ok('--spacing', '8', '2004')
-        self.assertIn(b'Su        Mo', stdout)
+        for run in self.runners:
+            output = run('--spacing', '8', '2004')
+            self.assertIn(b'Su        Mo', output)
 
     def test_option_months(self):
         self.assertFailure('-m')
         self.assertFailure('--month')
         self.assertFailure('-m', 'spam')
-        stdout = self.run_ok('--months', '1', '2004')
-        self.assertIn(conv('\nMo Tu We Th Fr Sa Su\n'), stdout)
+        for run in self.runners:
+            output = run('--months', '1', '2004')
+            self.assertIn(conv('\nMo Tu We Th Fr Sa Su\n'), output)
 
     def test_option_type(self):
         self.assertFailure('-t')
         self.assertFailure('--type')
         self.assertFailure('-t', 'spam')
-        stdout = self.run_ok('--type', 'text', '2004')
-        self.assertEqual(stdout, conv(result_2004_text))
-        stdout = self.run_ok('--type', 'html', '2004')
-        self.assertEqual(stdout[:6], b'<?xml ')
-        self.assertIn(b'<title>Calendar for 2004</title>', stdout)
+        for run in self.runners:
+            output = run('--type', 'text', '2004')
+            self.assertEqual(output, conv(result_2004_text))
+            output = run('--type', 'html', '2004')
+            self.assertEqual(output[:6], b'<?xml ')
+            self.assertIn(b'<title>Calendar for 2004</title>', output)
 
     def test_html_output_current_year(self):
-        stdout = self.run_ok('--type', 'html')
-        year = datetime.datetime.now().year
-        self.assertIn(('<title>Calendar for %s</title>' % year).encode(),
-                      stdout)
-        self.assertIn(b'<tr><th colspan="7" class="month">January</th></tr>',
-                      stdout)
+        for run in self.runners:
+            output = run('--type', 'html')
+            year = datetime.datetime.now().year
+            self.assertIn(('<title>Calendar for %s</title>' % year).encode(), output)
+            self.assertIn(b'<tr><th colspan="7" class="month">January</th></tr>', output)
 
     def test_html_output_year_encoding(self):
-        stdout = self.run_ok('-t', 'html', '--encoding', 'ascii', '2004')
-        self.assertEqual(stdout,
-                         result_2004_html.format(**default_format).encode('ascii'))
+        for run in self.runners:
+            output = run('-t', 'html', '--encoding', 'ascii', '2004')
+            self.assertEqual(output, result_2004_html.format(**default_format).encode('ascii'))
 
     def test_html_output_year_css(self):
         self.assertFailure('-t', 'html', '-c')
         self.assertFailure('-t', 'html', '--css')
-        stdout = self.run_ok('-t', 'html', '--css', 'custom.css', '2004')
-        self.assertIn(b'<link rel="stylesheet" type="text/css" '
-                      b'href="custom.css" />', stdout)
+        for run in self.runners:
+            output = run('-t', 'html', '--css', 'custom.css', '2004')
+            self.assertIn(b'<link rel="stylesheet" type="text/css" '
+                          b'href="custom.css" />', output)
 
 
 class MiscTestCase(unittest.TestCase):
diff --git a/Lib/test/test_call.py b/Lib/test/test_call.py
index 12759c53bb662c..b1c78d7136fc9b 100644
--- a/Lib/test/test_call.py
+++ b/Lib/test/test_call.py
@@ -1,5 +1,5 @@
 import unittest
-from test.support import cpython_only, requires_limited_api
+from test.support import cpython_only, requires_limited_api, skip_on_s390x
 try:
     import _testcapi
 except ImportError:
@@ -65,7 +65,8 @@ def test_varargs3(self):
         self.assertRaisesRegex(TypeError, msg, int.from_bytes, b'a', 'little', False)
 
     def test_varargs1min(self):
-        msg = r"get expected at least 1 argument, got 0"
+        msg = (r"get\(\) takes at least 1 argument \(0 given\)|"
+               r"get expected at least 1 argument, got 0")
         self.assertRaisesRegex(TypeError, msg, {}.get)
 
         msg = r"expected 1 argument, got 0"
@@ -76,11 +77,13 @@ def test_varargs2min(self):
         self.assertRaisesRegex(TypeError, msg, getattr)
 
     def test_varargs1max(self):
-        msg = r"input expected at most 1 argument, got 2"
+        msg = (r"input\(\) takes at most 1 argument \(2 given\)|"
+               r"input expected at most 1 argument, got 2")
         self.assertRaisesRegex(TypeError, msg, input, 1, 2)
 
     def test_varargs2max(self):
-        msg = r"get expected at most 2 arguments, got 3"
+        msg = (r"get\(\) takes at most 2 arguments \(3 given\)|"
+               r"get expected at most 2 arguments, got 3")
         self.assertRaisesRegex(TypeError, msg, {}.get, 1, 2, 3)
 
     def test_varargs1_kw(self):
@@ -96,7 +99,7 @@ def test_varargs3_kw(self):
         self.assertRaisesRegex(TypeError, msg, bool, x=2)
 
     def test_varargs4_kw(self):
-        msg = r"^list[.]index\(\) takes no keyword arguments$"
+        msg = r"^(list[.])?index\(\) takes no keyword arguments$"
         self.assertRaisesRegex(TypeError, msg, [].index, x=2)
 
     def test_varargs5_kw(self):
@@ -519,19 +522,6 @@ def check_result(self, result, expected):
                 expected = (*expected[:-1], result[-1])
         self.assertEqual(result, expected)
 
-    def test_fastcall(self):
-        # Test _PyObject_FastCall()
-
-        for func, args, expected in self.CALLS_POSARGS:
-            with self.subTest(func=func, args=args):
-                result = _testcapi.pyobject_fastcall(func, args)
-                self.check_result(result, expected)
-
-                if not args:
-                    # args=NULL, nargs=0
-                    result = _testcapi.pyobject_fastcall(func, None)
-                    self.check_result(result, expected)
-
     def test_vectorcall_dict(self):
         # Test PyObject_VectorcallDict()
 
@@ -928,9 +918,78 @@ def test_multiple_values(self):
         with self.check_raises_type_error(msg):
             A().method_two_args("x", "y", x="oops")
 
+@cpython_only
+class TestErrorMessagesSuggestions(unittest.TestCase):
+    @contextlib.contextmanager
+    def check_suggestion_includes(self, message):
+        with self.assertRaises(TypeError) as cm:
+            yield
+        self.assertIn(f"Did you mean '{message}'?", str(cm.exception))
+
+    @contextlib.contextmanager
+    def check_suggestion_not_pressent(self):
+        with self.assertRaises(TypeError) as cm:
+            yield
+        self.assertNotIn("Did you mean", str(cm.exception))
+
+    def test_unexpected_keyword_suggestion_valid_positions(self):
+        def foo(blech=None, /, aaa=None, *args, late1=None):
+            pass
+
+        cases = [
+            ("blach", None),
+            ("aa", "aaa"),
+            ("orgs", None),
+            ("late11", "late1"),
+        ]
+
+        for keyword, suggestion in cases:
+            with self.subTest(keyword):
+                ctx = self.check_suggestion_includes(suggestion) if suggestion else self.check_suggestion_not_pressent()
+                with ctx:
+                    foo(**{keyword:None})
+
+    def test_unexpected_keyword_suggestion_kinds(self):
+
+        def substitution(noise=None, more_noise=None, a = None, blech = None):
+            pass
+
+        def elimination(noise = None, more_noise = None, a = None, blch = None):
+            pass
+
+        def addition(noise = None, more_noise = None, a = None, bluchin = None):
+            pass
+
+        def substitution_over_elimination(blach = None, bluc = None):
+            pass
+
+        def substitution_over_addition(blach = None, bluchi = None):
+            pass
+
+        def elimination_over_addition(bluc = None, blucha = None):
+            pass
+
+        def case_change_over_substitution(BLuch=None, Luch = None, fluch = None):
+            pass
+
+        for func, suggestion in [
+            (addition, "bluchin"),
+            (substitution, "blech"),
+            (elimination, "blch"),
+            (addition, "bluchin"),
+            (substitution_over_elimination, "blach"),
+            (substitution_over_addition, "blach"),
+            (elimination_over_addition, "bluc"),
+            (case_change_over_substitution, "BLuch"),
+        ]:
+            with self.subTest(suggestion):
+                with self.check_suggestion_includes(suggestion):
+                    func(bluch=None)
+
 @cpython_only
 class TestRecursion(unittest.TestCase):
 
+    @skip_on_s390x
     def test_super_deep(self):
 
         def recurse(n):
@@ -945,11 +1004,11 @@ def py_recurse(n, m):
 
         def c_recurse(n):
             if n:
-                _testcapi.pyobject_fastcall(c_recurse, (n-1,))
+                _testcapi.pyobject_vectorcall(c_recurse, (n-1,), ())
 
         def c_py_recurse(m):
             if m:
-                _testcapi.pyobject_fastcall(py_recurse, (1000, m))
+                _testcapi.pyobject_vectorcall(py_recurse, (1000, m), ())
 
         depth = sys.getrecursionlimit()
         sys.setrecursionlimit(100_000)
@@ -966,6 +1025,7 @@ def c_py_recurse(m):
         finally:
             sys.setrecursionlimit(depth)
 
+
 class TestFunctionWithManyArgs(unittest.TestCase):
     def test_function_with_many_args(self):
         for N in (10, 500, 1000):
@@ -977,5 +1037,24 @@ def test_function_with_many_args(self):
                 self.assertEqual(l['f'](*range(N)), N//2)
 
 
+@unittest.skipIf(_testcapi is None, 'need _testcapi')
+class TestCAPI(unittest.TestCase):
+    def test_cfunction_call(self):
+        def func(*args, **kwargs):
+            return (args, kwargs)
+
+        # PyCFunction_Call() was removed in Python 3.13 API, but was kept in
+        # the stable ABI.
+        def PyCFunction_Call(func, *args, **kwargs):
+            if kwargs:
+                return _testcapi.pycfunction_call(func, args, kwargs)
+            else:
+                return _testcapi.pycfunction_call(func, args)
+
+        self.assertEqual(PyCFunction_Call(func), ((), {}))
+        self.assertEqual(PyCFunction_Call(func, 1, 2, 3), ((1, 2, 3), {}))
+        self.assertEqual(PyCFunction_Call(func, "arg", num=5), (("arg",), {'num': 5}))
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_capi/check_config.py b/Lib/test/test_capi/check_config.py
index aaedd82f39af50..eb99ae16f2b69e 100644
--- a/Lib/test/test_capi/check_config.py
+++ b/Lib/test/test_capi/check_config.py
@@ -12,7 +12,7 @@ def import_singlephase():
     try:
         import _testsinglephase
     except ImportError:
-        sys.modules.pop('_testsinglephase')
+        sys.modules.pop('_testsinglephase', None)
         return False
     else:
         del sys.modules['_testsinglephase']
diff --git a/Lib/test/test_capi/test_abstract.py b/Lib/test/test_capi/test_abstract.py
new file mode 100644
index 00000000000000..97ed939928c360
--- /dev/null
+++ b/Lib/test/test_capi/test_abstract.py
@@ -0,0 +1,1005 @@
+import unittest
+from collections import OrderedDict
+from test import support
+from test.support import import_helper
+
+_testcapi = import_helper.import_module('_testcapi')
+from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
+
+NULL = None
+
+class StrSubclass(str):
+    pass
+
+class BytesSubclass(bytes):
+    pass
+
+class WithStr:
+    def __init__(self, value):
+        self.value = value
+    def __str__(self):
+        return self.value
+
+class WithRepr:
+    def __init__(self, value):
+        self.value = value
+    def __repr__(self):
+        return self.value
+
+class WithBytes:
+    def __init__(self, value):
+        self.value = value
+    def __bytes__(self):
+        return self.value
+
+class TestObject:
+    @property
+    def evil(self):
+        raise RuntimeError('do not get evil')
+    @evil.setter
+    def evil(self, value):
+        raise RuntimeError('do not set evil')
+    @evil.deleter
+    def evil(self):
+        raise RuntimeError('do not del evil')
+
+class ProxyGetItem:
+    def __init__(self, obj):
+        self.obj = obj
+    def __getitem__(self, key):
+        return self.obj[key]
+
+class ProxySetItem:
+    def __init__(self, obj):
+        self.obj = obj
+    def __setitem__(self, key, value):
+        self.obj[key] = value
+
+class ProxyDelItem:
+    def __init__(self, obj):
+        self.obj = obj
+    def __delitem__(self, key):
+        del self.obj[key]
+
+def gen():
+    yield 'a'
+    yield 'b'
+    yield 'c'
+
+
+class CAPITest(unittest.TestCase):
+    def assertTypedEqual(self, actual, expected):
+        self.assertIs(type(actual), type(expected))
+        self.assertEqual(actual, expected)
+
+    def test_object_str(self):
+        # Test PyObject_Str()
+        object_str = _testcapi.object_str
+        self.assertTypedEqual(object_str(''), '')
+        self.assertTypedEqual(object_str('abc'), 'abc')
+        self.assertTypedEqual(object_str('\U0001f40d'), '\U0001f40d')
+        self.assertTypedEqual(object_str(StrSubclass('abc')), 'abc')
+        self.assertTypedEqual(object_str(WithStr('abc')), 'abc')
+        self.assertTypedEqual(object_str(WithStr(StrSubclass('abc'))), StrSubclass('abc'))
+        self.assertTypedEqual(object_str(WithRepr('<abc>')), '<abc>')
+        self.assertTypedEqual(object_str(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
+        self.assertTypedEqual(object_str(NULL), '<NULL>')
+
+    def test_object_repr(self):
+        # Test PyObject_Repr()
+        object_repr = _testcapi.object_repr
+        self.assertTypedEqual(object_repr(''), "''")
+        self.assertTypedEqual(object_repr('abc'), "'abc'")
+        self.assertTypedEqual(object_repr('\U0001f40d'), "'\U0001f40d'")
+        self.assertTypedEqual(object_repr(StrSubclass('abc')), "'abc'")
+        self.assertTypedEqual(object_repr(WithRepr('<abc>')), '<abc>')
+        self.assertTypedEqual(object_repr(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
+        self.assertTypedEqual(object_repr(WithRepr('<\U0001f40d>')), '<\U0001f40d>')
+        self.assertTypedEqual(object_repr(WithRepr(StrSubclass('<\U0001f40d>'))), StrSubclass('<\U0001f40d>'))
+        self.assertTypedEqual(object_repr(NULL), '<NULL>')
+
+    def test_object_ascii(self):
+        # Test PyObject_ASCII()
+        object_ascii = _testcapi.object_ascii
+        self.assertTypedEqual(object_ascii(''), "''")
+        self.assertTypedEqual(object_ascii('abc'), "'abc'")
+        self.assertTypedEqual(object_ascii('\U0001f40d'), r"'\U0001f40d'")
+        self.assertTypedEqual(object_ascii(StrSubclass('abc')), "'abc'")
+        self.assertTypedEqual(object_ascii(WithRepr('<abc>')), '<abc>')
+        self.assertTypedEqual(object_ascii(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
+        self.assertTypedEqual(object_ascii(WithRepr('<\U0001f40d>')), r'<\U0001f40d>')
+        self.assertTypedEqual(object_ascii(WithRepr(StrSubclass('<\U0001f40d>'))), r'<\U0001f40d>')
+        self.assertTypedEqual(object_ascii(NULL), '<NULL>')
+
+    def test_object_bytes(self):
+        # Test PyObject_Bytes()
+        object_bytes = _testcapi.object_bytes
+        self.assertTypedEqual(object_bytes(b''), b'')
+        self.assertTypedEqual(object_bytes(b'abc'), b'abc')
+        self.assertTypedEqual(object_bytes(BytesSubclass(b'abc')), b'abc')
+        self.assertTypedEqual(object_bytes(WithBytes(b'abc')), b'abc')
+        self.assertTypedEqual(object_bytes(WithBytes(BytesSubclass(b'abc'))), BytesSubclass(b'abc'))
+        self.assertTypedEqual(object_bytes(bytearray(b'abc')), b'abc')
+        self.assertTypedEqual(object_bytes(memoryview(b'abc')), b'abc')
+        self.assertTypedEqual(object_bytes([97, 98, 99]), b'abc')
+        self.assertTypedEqual(object_bytes((97, 98, 99)), b'abc')
+        self.assertTypedEqual(object_bytes(iter([97, 98, 99])), b'abc')
+        self.assertRaises(TypeError, object_bytes, WithBytes(bytearray(b'abc')))
+        self.assertRaises(TypeError, object_bytes, WithBytes([97, 98, 99]))
+        self.assertRaises(TypeError, object_bytes, 3)
+        self.assertRaises(TypeError, object_bytes, 'abc')
+        self.assertRaises(TypeError, object_bytes, object())
+        self.assertTypedEqual(object_bytes(NULL), b'<NULL>')
+
+    def test_object_getattr(self):
+        xgetattr = _testcapi.object_getattr
+        obj = TestObject()
+        obj.a = 11
+        setattr(obj, '\U0001f40d', 22)
+        self.assertEqual(xgetattr(obj, 'a'), 11)
+        self.assertRaises(AttributeError, xgetattr, obj, 'b')
+        self.assertEqual(xgetattr(obj, '\U0001f40d'), 22)
+
+        self.assertRaises(RuntimeError, xgetattr, obj, 'evil')
+        self.assertRaises(TypeError, xgetattr, obj, 1)
+        # CRASHES xgetattr(obj, NULL)
+        # CRASHES xgetattr(NULL, 'a')
+
+    def test_object_getattrstring(self):
+        getattrstring = _testcapi.object_getattrstring
+        obj = TestObject()
+        obj.a = 11
+        setattr(obj, '\U0001f40d', 22)
+        self.assertEqual(getattrstring(obj, b'a'), 11)
+        self.assertRaises(AttributeError, getattrstring, obj, b'b')
+        self.assertEqual(getattrstring(obj, '\U0001f40d'.encode()), 22)
+
+        self.assertRaises(RuntimeError, getattrstring, obj, b'evil')
+        self.assertRaises(UnicodeDecodeError, getattrstring, obj, b'\xff')
+        # CRASHES getattrstring(obj, NULL)
+        # CRASHES getattrstring(NULL, b'a')
+
+    def test_object_getoptionalattr(self):
+        getoptionalattr = _testcapi.object_getoptionalattr
+        obj = TestObject()
+        obj.a = 11
+        setattr(obj, '\U0001f40d', 22)
+        self.assertEqual(getoptionalattr(obj, 'a'), 11)
+        self.assertIs(getoptionalattr(obj, 'b'), AttributeError)
+        self.assertEqual(getoptionalattr(obj, '\U0001f40d'), 22)
+
+        self.assertRaises(RuntimeError, getoptionalattr, obj, 'evil')
+        self.assertRaises(TypeError, getoptionalattr, obj, 1)
+        # CRASHES getoptionalattr(obj, NULL)
+        # CRASHES getoptionalattr(NULL, 'a')
+
+    def test_object_getoptionalattrstring(self):
+        getoptionalattrstring = _testcapi.object_getoptionalattrstring
+        obj = TestObject()
+        obj.a = 11
+        setattr(obj, '\U0001f40d', 22)
+        self.assertEqual(getoptionalattrstring(obj, b'a'), 11)
+        self.assertIs(getoptionalattrstring(obj, b'b'), AttributeError)
+        self.assertEqual(getoptionalattrstring(obj, '\U0001f40d'.encode()), 22)
+
+        self.assertRaises(RuntimeError, getoptionalattrstring, obj, b'evil')
+        self.assertRaises(UnicodeDecodeError, getoptionalattrstring, obj, b'\xff')
+        # CRASHES getoptionalattrstring(obj, NULL)
+        # CRASHES getoptionalattrstring(NULL, b'a')
+
+    def test_object_hasattr(self):
+        xhasattr = _testcapi.object_hasattr
+        obj = TestObject()
+        obj.a = 1
+        setattr(obj, '\U0001f40d', 2)
+        self.assertTrue(xhasattr(obj, 'a'))
+        self.assertFalse(xhasattr(obj, 'b'))
+        self.assertTrue(xhasattr(obj, '\U0001f40d'))
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(xhasattr(obj, 'evil'))
+            self.assertEqual(cm.unraisable.exc_type, RuntimeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'do not get evil')
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(xhasattr(obj, 1))
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "attribute name must be string, not 'int'")
+
+        # CRASHES xhasattr(obj, NULL)
+        # CRASHES xhasattr(NULL, 'a')
+
+    def test_object_hasattrstring(self):
+        hasattrstring = _testcapi.object_hasattrstring
+        obj = TestObject()
+        obj.a = 1
+        setattr(obj, '\U0001f40d', 2)
+        self.assertTrue(hasattrstring(obj, b'a'))
+        self.assertFalse(hasattrstring(obj, b'b'))
+        self.assertTrue(hasattrstring(obj, '\U0001f40d'.encode()))
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(hasattrstring(obj, b'evil'))
+            self.assertEqual(cm.unraisable.exc_type, RuntimeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'do not get evil')
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(hasattrstring(obj, b'\xff'))
+            self.assertEqual(cm.unraisable.exc_type, UnicodeDecodeError)
+            self.assertRegex(str(cm.unraisable.exc_value),
+                             "'utf-8' codec can't decode")
+
+        # CRASHES hasattrstring(obj, NULL)
+        # CRASHES hasattrstring(NULL, b'a')
+
+    def test_object_hasattrwitherror(self):
+        xhasattr = _testcapi.object_hasattrwitherror
+        obj = TestObject()
+        obj.a = 1
+        setattr(obj, '\U0001f40d', 2)
+        self.assertTrue(xhasattr(obj, 'a'))
+        self.assertFalse(xhasattr(obj, 'b'))
+        self.assertTrue(xhasattr(obj, '\U0001f40d'))
+
+        self.assertRaises(RuntimeError, xhasattr, obj, 'evil')
+        self.assertRaises(TypeError, xhasattr, obj, 1)
+        # CRASHES xhasattr(obj, NULL)
+        # CRASHES xhasattr(NULL, 'a')
+
+    def test_object_hasattrstringwitherror(self):
+        hasattrstring = _testcapi.object_hasattrstringwitherror
+        obj = TestObject()
+        obj.a = 1
+        setattr(obj, '\U0001f40d', 2)
+        self.assertTrue(hasattrstring(obj, b'a'))
+        self.assertFalse(hasattrstring(obj, b'b'))
+        self.assertTrue(hasattrstring(obj, '\U0001f40d'.encode()))
+
+        self.assertRaises(RuntimeError, hasattrstring, obj, b'evil')
+        self.assertRaises(UnicodeDecodeError, hasattrstring, obj, b'\xff')
+        # CRASHES hasattrstring(obj, NULL)
+        # CRASHES hasattrstring(NULL, b'a')
+
+    def test_object_setattr(self):
+        xsetattr = _testcapi.object_setattr
+        obj = TestObject()
+        xsetattr(obj, 'a', 5)
+        self.assertEqual(obj.a, 5)
+        xsetattr(obj, '\U0001f40d', 8)
+        self.assertEqual(getattr(obj, '\U0001f40d'), 8)
+
+        # PyObject_SetAttr(obj, attr_name, NULL) removes the attribute
+        xsetattr(obj, 'a', NULL)
+        self.assertFalse(hasattr(obj, 'a'))
+        self.assertRaises(AttributeError, xsetattr, obj, 'b', NULL)
+        self.assertRaises(RuntimeError, xsetattr, obj, 'evil', NULL)
+
+        self.assertRaises(RuntimeError, xsetattr, obj, 'evil', 'good')
+        self.assertRaises(AttributeError, xsetattr, 42, 'a', 5)
+        self.assertRaises(TypeError, xsetattr, obj, 1, 5)
+        # CRASHES xsetattr(obj, NULL, 5)
+        # CRASHES xsetattr(NULL, 'a', 5)
+
+    def test_object_setattrstring(self):
+        setattrstring = _testcapi.object_setattrstring
+        obj = TestObject()
+        setattrstring(obj, b'a', 5)
+        self.assertEqual(obj.a, 5)
+        setattrstring(obj, '\U0001f40d'.encode(), 8)
+        self.assertEqual(getattr(obj, '\U0001f40d'), 8)
+
+        # PyObject_SetAttrString(obj, attr_name, NULL) removes the attribute
+        setattrstring(obj, b'a', NULL)
+        self.assertFalse(hasattr(obj, 'a'))
+        self.assertRaises(AttributeError, setattrstring, obj, b'b', NULL)
+        self.assertRaises(RuntimeError, setattrstring, obj, b'evil', NULL)
+
+        self.assertRaises(RuntimeError, setattrstring, obj, b'evil', 'good')
+        self.assertRaises(AttributeError, setattrstring, 42, b'a', 5)
+        self.assertRaises(TypeError, setattrstring, obj, 1, 5)
+        self.assertRaises(UnicodeDecodeError, setattrstring, obj, b'\xff', 5)
+        # CRASHES setattrstring(obj, NULL, 5)
+        # CRASHES setattrstring(NULL, b'a', 5)
+
+    def test_object_delattr(self):
+        xdelattr = _testcapi.object_delattr
+        obj = TestObject()
+        obj.a = 1
+        setattr(obj, '\U0001f40d', 2)
+        xdelattr(obj, 'a')
+        self.assertFalse(hasattr(obj, 'a'))
+        self.assertRaises(AttributeError, xdelattr, obj, 'b')
+        xdelattr(obj, '\U0001f40d')
+        self.assertFalse(hasattr(obj, '\U0001f40d'))
+
+        self.assertRaises(AttributeError, xdelattr, 42, 'numerator')
+        self.assertRaises(RuntimeError, xdelattr, obj, 'evil')
+        self.assertRaises(TypeError, xdelattr, obj, 1)
+        # CRASHES xdelattr(obj, NULL)
+        # CRASHES xdelattr(NULL, 'a')
+
+    def test_object_delattrstring(self):
+        delattrstring = _testcapi.object_delattrstring
+        obj = TestObject()
+        obj.a = 1
+        setattr(obj, '\U0001f40d', 2)
+        delattrstring(obj, b'a')
+        self.assertFalse(hasattr(obj, 'a'))
+        self.assertRaises(AttributeError, delattrstring, obj, b'b')
+        delattrstring(obj, '\U0001f40d'.encode())
+        self.assertFalse(hasattr(obj, '\U0001f40d'))
+
+        self.assertRaises(AttributeError, delattrstring, 42, b'numerator')
+        self.assertRaises(RuntimeError, delattrstring, obj, b'evil')
+        self.assertRaises(UnicodeDecodeError, delattrstring, obj, b'\xff')
+        # CRASHES delattrstring(obj, NULL)
+        # CRASHES delattrstring(NULL, b'a')
+
+
+    def test_mapping_check(self):
+        check = _testcapi.mapping_check
+        self.assertTrue(check({1: 2}))
+        self.assertTrue(check([1, 2]))
+        self.assertTrue(check((1, 2)))
+        self.assertTrue(check('abc'))
+        self.assertTrue(check(b'abc'))
+        self.assertFalse(check(42))
+        self.assertFalse(check(object()))
+        self.assertFalse(check(NULL))
+
+    def test_mapping_size(self):
+        for size in _testcapi.mapping_size, _testcapi.mapping_length:
+            self.assertEqual(size({1: 2}), 1)
+            self.assertEqual(size([1, 2]), 2)
+            self.assertEqual(size((1, 2)), 2)
+            self.assertEqual(size('abc'), 3)
+            self.assertEqual(size(b'abc'), 3)
+
+            self.assertRaises(TypeError, size, 42)
+            self.assertRaises(TypeError, size, object())
+            self.assertRaises(SystemError, size, NULL)
+
+    def test_object_getitem(self):
+        getitem = _testcapi.object_getitem
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitem(dct, 'a'), 1)
+        self.assertRaises(KeyError, getitem, dct, 'b')
+        self.assertEqual(getitem(dct, '\U0001f40d'), 2)
+
+        dct2 = ProxyGetItem(dct)
+        self.assertEqual(getitem(dct2, 'a'), 1)
+        self.assertRaises(KeyError, getitem, dct2, 'b')
+
+        self.assertEqual(getitem(['a', 'b', 'c'], 1), 'b')
+
+        self.assertRaises(TypeError, getitem, 42, 'a')
+        self.assertRaises(TypeError, getitem, {}, [])  # unhashable
+        self.assertRaises(SystemError, getitem, {}, NULL)
+        self.assertRaises(IndexError, getitem, [], 1)
+        self.assertRaises(TypeError, getitem, [], 'a')
+        self.assertRaises(SystemError, getitem, NULL, 'a')
+
+    def test_mapping_getitemstring(self):
+        getitemstring = _testcapi.mapping_getitemstring
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitemstring(dct, b'a'), 1)
+        self.assertRaises(KeyError, getitemstring, dct, b'b')
+        self.assertEqual(getitemstring(dct, '\U0001f40d'.encode()), 2)
+
+        dct2 = ProxyGetItem(dct)
+        self.assertEqual(getitemstring(dct2, b'a'), 1)
+        self.assertRaises(KeyError, getitemstring, dct2, b'b')
+
+        self.assertRaises(TypeError, getitemstring, 42, b'a')
+        self.assertRaises(UnicodeDecodeError, getitemstring, {}, b'\xff')
+        self.assertRaises(SystemError, getitemstring, {}, NULL)
+        self.assertRaises(TypeError, getitemstring, [], b'a')
+        self.assertRaises(SystemError, getitemstring, NULL, b'a')
+
+    def test_mapping_getoptionalitem(self):
+        getitem = _testcapi.mapping_getoptionalitem
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitem(dct, 'a'), 1)
+        self.assertEqual(getitem(dct, 'b'), KeyError)
+        self.assertEqual(getitem(dct, '\U0001f40d'), 2)
+
+        dct2 = ProxyGetItem(dct)
+        self.assertEqual(getitem(dct2, 'a'), 1)
+        self.assertEqual(getitem(dct2, 'b'), KeyError)
+
+        self.assertEqual(getitem(['a', 'b', 'c'], 1), 'b')
+
+        self.assertRaises(TypeError, getitem, 42, 'a')
+        self.assertRaises(TypeError, getitem, {}, [])  # unhashable
+        self.assertRaises(IndexError, getitem, [], 1)
+        self.assertRaises(TypeError, getitem, [], 'a')
+        # CRASHES getitem({}, NULL)
+        # CRASHES getitem(NULL, 'a')
+
+    def test_mapping_getoptionalitemstring(self):
+        getitemstring = _testcapi.mapping_getoptionalitemstring
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitemstring(dct, b'a'), 1)
+        self.assertEqual(getitemstring(dct, b'b'), KeyError)
+        self.assertEqual(getitemstring(dct, '\U0001f40d'.encode()), 2)
+
+        dct2 = ProxyGetItem(dct)
+        self.assertEqual(getitemstring(dct2, b'a'), 1)
+        self.assertEqual(getitemstring(dct2, b'b'), KeyError)
+
+        self.assertRaises(TypeError, getitemstring, 42, b'a')
+        self.assertRaises(UnicodeDecodeError, getitemstring, {}, b'\xff')
+        self.assertRaises(SystemError, getitemstring, {}, NULL)
+        self.assertRaises(TypeError, getitemstring, [], b'a')
+        # CRASHES getitemstring(NULL, b'a')
+
+    def test_mapping_haskey(self):
+        haskey = _testcapi.mapping_haskey
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertTrue(haskey(dct, 'a'))
+        self.assertFalse(haskey(dct, 'b'))
+        self.assertTrue(haskey(dct, '\U0001f40d'))
+
+        dct2 = ProxyGetItem(dct)
+        self.assertTrue(haskey(dct2, 'a'))
+        self.assertFalse(haskey(dct2, 'b'))
+
+        self.assertTrue(haskey(['a', 'b', 'c'], 1))
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskey(42, 'a'))
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "'int' object is not subscriptable")
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskey({}, []))
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "unhashable type: 'list'")
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskey([], 1))
+            self.assertEqual(cm.unraisable.exc_type, IndexError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'list index out of range')
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskey([], 'a'))
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'list indices must be integers or slices, not str')
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskey({}, NULL))
+            self.assertEqual(cm.unraisable.exc_type, SystemError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'null argument to internal routine')
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskey(NULL, 'a'))
+            self.assertEqual(cm.unraisable.exc_type, SystemError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'null argument to internal routine')
+
+    def test_mapping_haskeystring(self):
+        haskeystring = _testcapi.mapping_haskeystring
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertTrue(haskeystring(dct, b'a'))
+        self.assertFalse(haskeystring(dct, b'b'))
+        self.assertTrue(haskeystring(dct, '\U0001f40d'.encode()))
+
+        dct2 = ProxyGetItem(dct)
+        self.assertTrue(haskeystring(dct2, b'a'))
+        self.assertFalse(haskeystring(dct2, b'b'))
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskeystring(42, b'a'))
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "'int' object is not subscriptable")
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskeystring({}, b'\xff'))
+            self.assertEqual(cm.unraisable.exc_type, UnicodeDecodeError)
+            self.assertRegex(str(cm.unraisable.exc_value),
+                             "'utf-8' codec can't decode")
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskeystring({}, NULL))
+            self.assertEqual(cm.unraisable.exc_type, SystemError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "null argument to internal routine")
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskeystring([], b'a'))
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             'list indices must be integers or slices, not str')
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertFalse(haskeystring(NULL, b'a'))
+            self.assertEqual(cm.unraisable.exc_type, SystemError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "null argument to internal routine")
+
+    def test_mapping_haskeywitherror(self):
+        haskey = _testcapi.mapping_haskeywitherror
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertTrue(haskey(dct, 'a'))
+        self.assertFalse(haskey(dct, 'b'))
+        self.assertTrue(haskey(dct, '\U0001f40d'))
+
+        dct2 = ProxyGetItem(dct)
+        self.assertTrue(haskey(dct2, 'a'))
+        self.assertFalse(haskey(dct2, 'b'))
+
+        self.assertTrue(haskey(['a', 'b', 'c'], 1))
+
+        self.assertRaises(TypeError, haskey, 42, 'a')
+        self.assertRaises(TypeError, haskey, {}, [])  # unhashable
+        self.assertRaises(IndexError, haskey, [], 1)
+        self.assertRaises(TypeError, haskey, [], 'a')
+
+        # CRASHES haskey({}, NULL))
+        # CRASHES haskey(NULL, 'a'))
+
+    def test_mapping_haskeystringwitherror(self):
+        haskeystring = _testcapi.mapping_haskeystringwitherror
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertTrue(haskeystring(dct, b'a'))
+        self.assertFalse(haskeystring(dct, b'b'))
+        self.assertTrue(haskeystring(dct, '\U0001f40d'.encode()))
+
+        dct2 = ProxyGetItem(dct)
+        self.assertTrue(haskeystring(dct2, b'a'))
+        self.assertFalse(haskeystring(dct2, b'b'))
+
+        self.assertRaises(TypeError, haskeystring, 42, b'a')
+        self.assertRaises(UnicodeDecodeError, haskeystring, {}, b'\xff')
+        self.assertRaises(SystemError, haskeystring, {}, NULL)
+        self.assertRaises(TypeError, haskeystring, [], b'a')
+        # CRASHES haskeystring(NULL, b'a')
+
+    def test_object_setitem(self):
+        setitem = _testcapi.object_setitem
+        dct = {}
+        setitem(dct, 'a', 5)
+        self.assertEqual(dct, {'a': 5})
+        setitem(dct, '\U0001f40d', 8)
+        self.assertEqual(dct, {'a': 5, '\U0001f40d': 8})
+
+        dct = {}
+        dct2 = ProxySetItem(dct)
+        setitem(dct2, 'a', 5)
+        self.assertEqual(dct, {'a': 5})
+
+        lst = ['a', 'b', 'c']
+        setitem(lst, 1, 'x')
+        self.assertEqual(lst, ['a', 'x', 'c'])
+
+        self.assertRaises(TypeError, setitem, 42, 'a', 5)
+        self.assertRaises(TypeError, setitem, {}, [], 5)  # unhashable
+        self.assertRaises(SystemError, setitem, {}, NULL, 5)
+        self.assertRaises(SystemError, setitem, {}, 'a', NULL)
+        self.assertRaises(IndexError, setitem, [], 1, 5)
+        self.assertRaises(TypeError, setitem, [], 'a', 5)
+        self.assertRaises(TypeError, setitem, (), 1, 5)
+        self.assertRaises(SystemError, setitem, NULL, 'a', 5)
+
+    def test_mapping_setitemstring(self):
+        setitemstring = _testcapi.mapping_setitemstring
+        dct = {}
+        setitemstring(dct, b'a', 5)
+        self.assertEqual(dct, {'a': 5})
+        setitemstring(dct, '\U0001f40d'.encode(), 8)
+        self.assertEqual(dct, {'a': 5, '\U0001f40d': 8})
+
+        dct = {}
+        dct2 = ProxySetItem(dct)
+        setitemstring(dct2, b'a', 5)
+        self.assertEqual(dct, {'a': 5})
+
+        self.assertRaises(TypeError, setitemstring, 42, b'a', 5)
+        self.assertRaises(UnicodeDecodeError, setitemstring, {}, b'\xff', 5)
+        self.assertRaises(SystemError, setitemstring, {}, NULL, 5)
+        self.assertRaises(SystemError, setitemstring, {}, b'a', NULL)
+        self.assertRaises(TypeError, setitemstring, [], b'a', 5)
+        self.assertRaises(SystemError, setitemstring, NULL, b'a', 5)
+
+    def test_object_delitem(self):
+        for delitem in _testcapi.object_delitem, _testcapi.mapping_delitem:
+            dct = {'a': 1, 'c': 2, '\U0001f40d': 3}
+            delitem(dct, 'a')
+            self.assertEqual(dct, {'c': 2, '\U0001f40d': 3})
+            self.assertRaises(KeyError, delitem, dct, 'b')
+            delitem(dct, '\U0001f40d')
+            self.assertEqual(dct, {'c': 2})
+
+            dct = {'a': 1, 'c': 2}
+            dct2 = ProxyDelItem(dct)
+            delitem(dct2, 'a')
+            self.assertEqual(dct, {'c': 2})
+            self.assertRaises(KeyError, delitem, dct2, 'b')
+
+            lst = ['a', 'b', 'c']
+            delitem(lst, 1)
+            self.assertEqual(lst, ['a', 'c'])
+
+            self.assertRaises(TypeError, delitem, 42, 'a')
+            self.assertRaises(TypeError, delitem, {}, [])  # unhashable
+            self.assertRaises(SystemError, delitem, {}, NULL)
+            self.assertRaises(IndexError, delitem, [], 1)
+            self.assertRaises(TypeError, delitem, [], 'a')
+            self.assertRaises(SystemError, delitem, NULL, 'a')
+
+    def test_mapping_delitemstring(self):
+        delitemstring = _testcapi.mapping_delitemstring
+        dct = {'a': 1, 'c': 2, '\U0001f40d': 3}
+        delitemstring(dct, b'a')
+        self.assertEqual(dct, {'c': 2, '\U0001f40d': 3})
+        self.assertRaises(KeyError, delitemstring, dct, b'b')
+        delitemstring(dct, '\U0001f40d'.encode())
+        self.assertEqual(dct, {'c': 2})
+
+        dct = {'a': 1, 'c': 2}
+        dct2 = ProxyDelItem(dct)
+        delitemstring(dct2, b'a')
+        self.assertEqual(dct, {'c': 2})
+        self.assertRaises(KeyError, delitemstring, dct2, b'b')
+
+        self.assertRaises(TypeError, delitemstring, 42, b'a')
+        self.assertRaises(UnicodeDecodeError, delitemstring, {}, b'\xff')
+        self.assertRaises(SystemError, delitemstring, {}, NULL)
+        self.assertRaises(TypeError, delitemstring, [], b'a')
+        self.assertRaises(SystemError, delitemstring, NULL, b'a')
+
+    def test_mapping_keys_valuesitems(self):
+        class Mapping1(dict):
+            def keys(self):
+                return list(super().keys())
+            def values(self):
+                return list(super().values())
+            def items(self):
+                return list(super().items())
+        class Mapping2(dict):
+            def keys(self):
+                return tuple(super().keys())
+            def values(self):
+                return tuple(super().values())
+            def items(self):
+                return tuple(super().items())
+        dict_obj = {'foo': 1, 'bar': 2, 'spam': 3}
+
+        for mapping in [{}, OrderedDict(), Mapping1(), Mapping2(),
+                        dict_obj, OrderedDict(dict_obj),
+                        Mapping1(dict_obj), Mapping2(dict_obj)]:
+            self.assertListEqual(_testcapi.mapping_keys(mapping),
+                                 list(mapping.keys()))
+            self.assertListEqual(_testcapi.mapping_values(mapping),
+                                 list(mapping.values()))
+            self.assertListEqual(_testcapi.mapping_items(mapping),
+                                 list(mapping.items()))
+
+    def test_mapping_keys_valuesitems_bad_arg(self):
+        self.assertRaises(AttributeError, _testcapi.mapping_keys, object())
+        self.assertRaises(AttributeError, _testcapi.mapping_values, object())
+        self.assertRaises(AttributeError, _testcapi.mapping_items, object())
+        self.assertRaises(AttributeError, _testcapi.mapping_keys, [])
+        self.assertRaises(AttributeError, _testcapi.mapping_values, [])
+        self.assertRaises(AttributeError, _testcapi.mapping_items, [])
+        self.assertRaises(SystemError, _testcapi.mapping_keys, NULL)
+        self.assertRaises(SystemError, _testcapi.mapping_values, NULL)
+        self.assertRaises(SystemError, _testcapi.mapping_items, NULL)
+
+        class BadMapping:
+            def keys(self):
+                return None
+            def values(self):
+                return None
+            def items(self):
+                return None
+        bad_mapping = BadMapping()
+        self.assertRaises(TypeError, _testcapi.mapping_keys, bad_mapping)
+        self.assertRaises(TypeError, _testcapi.mapping_values, bad_mapping)
+        self.assertRaises(TypeError, _testcapi.mapping_items, bad_mapping)
+
+    def test_sequence_check(self):
+        check = _testcapi.sequence_check
+        self.assertFalse(check({1: 2}))
+        self.assertTrue(check([1, 2]))
+        self.assertTrue(check((1, 2)))
+        self.assertTrue(check('abc'))
+        self.assertTrue(check(b'abc'))
+        self.assertFalse(check(42))
+        self.assertFalse(check(object()))
+        # CRASHES check(NULL)
+
+    def test_sequence_size(self):
+        for size in _testcapi.sequence_size, _testcapi.sequence_length:
+            self.assertEqual(size([1, 2]), 2)
+            self.assertEqual(size((1, 2)), 2)
+            self.assertEqual(size('abc'), 3)
+            self.assertEqual(size(b'abc'), 3)
+
+            self.assertRaises(TypeError, size, {})
+            self.assertRaises(TypeError, size, 42)
+            self.assertRaises(TypeError, size, object())
+            self.assertRaises(SystemError, size, NULL)
+
+    def test_sequence_getitem(self):
+        getitem = _testcapi.sequence_getitem
+        lst = ['a', 'b', 'c']
+        self.assertEqual(getitem(lst, 1), 'b')
+        self.assertEqual(getitem(lst, -1), 'c')
+        self.assertRaises(IndexError, getitem, lst, 3)
+        self.assertRaises(IndexError, getitem, lst, PY_SSIZE_T_MAX)
+        self.assertRaises(IndexError, getitem, lst, PY_SSIZE_T_MIN)
+
+        self.assertRaises(TypeError, getitem, 42, 1)
+        self.assertRaises(TypeError, getitem, {}, 1)
+        self.assertRaises(SystemError, getitem, NULL, 1)
+
+    def test_sequence_concat(self):
+        concat = _testcapi.sequence_concat
+        self.assertEqual(concat(['a', 'b'], [1, 2]), ['a', 'b', 1, 2])
+        self.assertEqual(concat(('a', 'b'), (1, 2)), ('a', 'b', 1, 2))
+
+        self.assertRaises(TypeError, concat, [], ())
+        self.assertRaises(TypeError, concat, (), [])
+        self.assertRaises(TypeError, concat, [], 42)
+        self.assertRaises(TypeError, concat, 42, [])
+        self.assertRaises(TypeError, concat, 42, 43)
+        self.assertRaises(SystemError, concat, [], NULL)
+        self.assertRaises(SystemError, concat, NULL, [])
+
+    def test_sequence_repeat(self):
+        repeat = _testcapi.sequence_repeat
+        self.assertEqual(repeat(['a', 'b'], 2), ['a', 'b', 'a', 'b'])
+        self.assertEqual(repeat(('a', 'b'), 2), ('a', 'b', 'a', 'b'))
+        self.assertEqual(repeat(['a', 'b'], 0), [])
+        self.assertEqual(repeat(['a', 'b'], -1), [])
+        self.assertEqual(repeat(['a', 'b'], PY_SSIZE_T_MIN), [])
+        self.assertEqual(repeat([], PY_SSIZE_T_MAX), [])
+        self.assertRaises(MemoryError, repeat, ['a', 'b'], PY_SSIZE_T_MAX)
+
+        self.assertRaises(TypeError, repeat, set(), 2)
+        self.assertRaises(TypeError, repeat, 42, 2)
+        self.assertRaises(SystemError, repeat, NULL, 2)
+
+    def test_sequence_inplaceconcat(self):
+        inplaceconcat = _testcapi.sequence_inplaceconcat
+        lst = ['a', 'b']
+        res = inplaceconcat(lst, [1, 2])
+        self.assertEqual(res, ['a', 'b', 1, 2])
+        self.assertIs(res, lst)
+        lst = ['a', 'b']
+        res = inplaceconcat(lst, (1, 2))
+        self.assertEqual(res, ['a', 'b', 1, 2])
+        self.assertIs(res, lst)
+        self.assertEqual(inplaceconcat(('a', 'b'), (1, 2)), ('a', 'b', 1, 2))
+
+        self.assertRaises(TypeError, inplaceconcat, (), [])
+        self.assertRaises(TypeError, inplaceconcat, [], 42)
+        self.assertRaises(TypeError, inplaceconcat, 42, [])
+        self.assertRaises(TypeError, inplaceconcat, 42, 43)
+        self.assertRaises(SystemError, inplaceconcat, [], NULL)
+        self.assertRaises(SystemError, inplaceconcat, NULL, [])
+
+    def test_sequence_inplacerepeat(self):
+        inplacerepeat = _testcapi.sequence_inplacerepeat
+        lst = ['a', 'b']
+        res = inplacerepeat(lst, 2)
+        self.assertEqual(res, ['a', 'b', 'a', 'b'])
+        self.assertIs(res, lst)
+        self.assertEqual(inplacerepeat(('a', 'b'), 2), ('a', 'b', 'a', 'b'))
+        self.assertEqual(inplacerepeat(['a', 'b'], 0), [])
+        self.assertEqual(inplacerepeat(['a', 'b'], -1), [])
+        self.assertEqual(inplacerepeat(['a', 'b'], PY_SSIZE_T_MIN), [])
+        self.assertEqual(inplacerepeat([], PY_SSIZE_T_MAX), [])
+        self.assertRaises(MemoryError, inplacerepeat, ['a', 'b'], PY_SSIZE_T_MAX)
+
+        self.assertRaises(TypeError, inplacerepeat, set(), 2)
+        self.assertRaises(TypeError, inplacerepeat, 42, 2)
+        self.assertRaises(SystemError, inplacerepeat, NULL, 2)
+
+    def test_sequence_setitem(self):
+        setitem = _testcapi.sequence_setitem
+        lst = ['a', 'b', 'c']
+        setitem(lst, 1, 'x')
+        self.assertEqual(lst, ['a', 'x', 'c'])
+        setitem(lst, -1, 'y')
+        self.assertEqual(lst, ['a', 'x', 'y'])
+
+        setitem(lst, 0, NULL)
+        self.assertEqual(lst, ['x', 'y'])
+        self.assertRaises(IndexError, setitem, lst, 3, 'x')
+        self.assertRaises(IndexError, setitem, lst, PY_SSIZE_T_MAX, 'x')
+        self.assertRaises(IndexError, setitem, lst, PY_SSIZE_T_MIN, 'x')
+
+        self.assertRaises(TypeError, setitem, 42, 1, 'x')
+        self.assertRaises(TypeError, setitem, {}, 1, 'x')
+        self.assertRaises(SystemError, setitem, NULL, 1, 'x')
+
+    def test_sequence_delitem(self):
+        delitem = _testcapi.sequence_delitem
+        lst = ['a', 'b', 'c']
+        delitem(lst, 1)
+        self.assertEqual(lst, ['a', 'c'])
+        delitem(lst, -1)
+        self.assertEqual(lst, ['a'])
+        self.assertRaises(IndexError, delitem, lst, 3)
+        self.assertRaises(IndexError, delitem, lst, PY_SSIZE_T_MAX)
+        self.assertRaises(IndexError, delitem, lst, PY_SSIZE_T_MIN)
+
+        self.assertRaises(TypeError, delitem, 42, 1)
+        self.assertRaises(TypeError, delitem, {}, 1)
+        self.assertRaises(SystemError, delitem, NULL, 1)
+
+    def test_sequence_setslice(self):
+        setslice = _testcapi.sequence_setslice
+
+        # Correct case:
+        for start in [*range(-6, 7), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
+            for stop in [*range(-6, 7), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
+                data = [1, 2, 3, 4, 5]
+                data_copy = [1, 2, 3, 4, 5]
+                setslice(data, start, stop, [8, 9])
+                data_copy[start:stop] = [8, 9]
+                self.assertEqual(data, data_copy)
+
+                data = [1, 2, 3, 4, 5]
+                data_copy = [1, 2, 3, 4, 5]
+                setslice(data, start, stop, NULL)
+                del data_copy[start:stop]
+                self.assertEqual(data, data_copy)
+
+        # Custom class:
+        class Custom:
+            def __setitem__(self, index, value):
+                self.index = index
+                self.value = value
+
+        c = Custom()
+        setslice(c, 0, 5, 'abc')
+        self.assertEqual(c.index, slice(0, 5))
+        self.assertEqual(c.value, 'abc')
+
+        # Immutable sequences must raise:
+        bad_seq1 = (1, 2, 3, 4)
+        self.assertRaises(TypeError, setslice, bad_seq1, 1, 3, (8, 9))
+        self.assertEqual(bad_seq1, (1, 2, 3, 4))
+
+        bad_seq2 = 'abcd'
+        self.assertRaises(TypeError, setslice, bad_seq2, 1, 3, 'xy')
+        self.assertEqual(bad_seq2, 'abcd')
+
+        # Not a sequence:
+        self.assertRaises(TypeError, setslice, object(), 1, 3, 'xy')
+        self.assertRaises(SystemError, setslice, NULL, 1, 3, 'xy')
+
+    def test_sequence_delslice(self):
+        delslice = _testcapi.sequence_delslice
+
+        # Correct case:
+        for start in [*range(-6, 7), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
+            for stop in [*range(-6, 7), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
+                data = [1, 2, 3, 4, 5]
+                data_copy = [1, 2, 3, 4, 5]
+                delslice(data, start, stop)
+                del data_copy[start:stop]
+                self.assertEqual(data, data_copy)
+
+        # Custom class:
+        class Custom:
+            def __delitem__(self, index):
+                self.index = index
+
+        c = Custom()
+        delslice(c, 0, 5)
+        self.assertEqual(c.index, slice(0, 5))
+
+        # Immutable sequences must raise:
+        bad_seq1 = (1, 2, 3, 4)
+        self.assertRaises(TypeError, delslice, bad_seq1, 1, 3)
+        self.assertEqual(bad_seq1, (1, 2, 3, 4))
+
+        bad_seq2 = 'abcd'
+        self.assertRaises(TypeError, delslice, bad_seq2, 1, 3)
+        self.assertEqual(bad_seq2, 'abcd')
+
+        # Not a sequence:
+        self.assertRaises(TypeError, delslice, object(), 1, 3)
+        self.assertRaises(SystemError, delslice, NULL, 1, 3)
+
+        mapping = {1: 'a', 2: 'b', 3: 'c'}
+        self.assertRaises(KeyError, delslice, mapping, 1, 3)
+        self.assertEqual(mapping, {1: 'a', 2: 'b', 3: 'c'})
+
+    def test_sequence_count(self):
+        count = _testcapi.sequence_count
+
+        lst = ['a', 'b', 'a']
+        self.assertEqual(count(lst, 'a'), 2)
+        self.assertEqual(count(lst, 'c'), 0)
+        self.assertEqual(count(iter(lst), 'a'), 2)
+        self.assertEqual(count(iter(lst), 'c'), 0)
+        self.assertEqual(count({'a': 2}, 'a'), 1)
+
+        self.assertRaises(TypeError, count, 42, 'a')
+        self.assertRaises(SystemError, count, [], NULL)
+        self.assertRaises(SystemError, count, [1], NULL)
+        self.assertRaises(SystemError, count, NULL, 'a')
+
+    def test_sequence_contains(self):
+        contains = _testcapi.sequence_contains
+
+        lst = ['a', 'b', 'a']
+        self.assertEqual(contains(lst, 'a'), 1)
+        self.assertEqual(contains(lst, 'c'), 0)
+        self.assertEqual(contains(iter(lst), 'a'), 1)
+        self.assertEqual(contains(iter(lst), 'c'), 0)
+        self.assertEqual(contains({'a': 2}, 'a'), 1)
+
+        # XXX Only for empty sequences. Should be SystemError?
+        self.assertEqual(contains([], NULL), 0)
+
+        self.assertRaises(TypeError, contains, 42, 'a')
+        self.assertRaises(SystemError, contains, [1], NULL)
+        # CRASHES contains({}, NULL)
+        # CRASHES contains(set(), NULL)
+        # CRASHES contains(NULL, 'a')
+
+    def test_sequence_index(self):
+        index = _testcapi.sequence_index
+
+        lst = ['a', 'b', 'a']
+        self.assertEqual(index(lst, 'a'), 0)
+        self.assertEqual(index(lst, 'b'), 1)
+        self.assertRaises(ValueError, index, lst, 'c')
+        self.assertEqual(index(iter(lst), 'a'), 0)
+        self.assertEqual(index(iter(lst), 'b'), 1)
+        self.assertRaises(ValueError, index, iter(lst), 'c')
+        dct = {'a': 2, 'b': 3}
+        self.assertEqual(index(dct, 'a'), 0)
+        self.assertEqual(index(dct, 'b'), 1)
+        self.assertRaises(ValueError, index, dct, 'c')
+
+        self.assertRaises(TypeError, index, 42, 'a')
+        self.assertRaises(SystemError, index, [], NULL)
+        self.assertRaises(SystemError, index, [1], NULL)
+        self.assertRaises(SystemError, index, NULL, 'a')
+
+    def test_sequence_list(self):
+        xlist = _testcapi.sequence_list
+        self.assertEqual(xlist(['a', 'b', 'c']), ['a', 'b', 'c'])
+        self.assertEqual(xlist(('a', 'b', 'c')), ['a', 'b', 'c'])
+        self.assertEqual(xlist(iter(['a', 'b', 'c'])), ['a', 'b', 'c'])
+        self.assertEqual(xlist(gen()), ['a', 'b', 'c'])
+
+        self.assertRaises(TypeError, xlist, 42)
+        self.assertRaises(SystemError, xlist, NULL)
+
+    def test_sequence_tuple(self):
+        xtuple = _testcapi.sequence_tuple
+        self.assertEqual(xtuple(['a', 'b', 'c']), ('a', 'b', 'c'))
+        self.assertEqual(xtuple(('a', 'b', 'c')), ('a', 'b', 'c'))
+        self.assertEqual(xtuple(iter(['a', 'b', 'c'])), ('a', 'b', 'c'))
+        self.assertEqual(xtuple(gen()), ('a', 'b', 'c'))
+
+        self.assertRaises(TypeError, xtuple, 42)
+        self.assertRaises(SystemError, xtuple, NULL)
+
+    def test_number_check(self):
+        number_check = _testcapi.number_check
+        self.assertTrue(number_check(1 + 1j))
+        self.assertTrue(number_check(1))
+        self.assertTrue(number_check(0.5))
+        self.assertFalse(number_check("1 + 1j"))
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_bytearray.py b/Lib/test/test_capi/test_bytearray.py
new file mode 100644
index 00000000000000..833122c4e319d8
--- /dev/null
+++ b/Lib/test/test_capi/test_bytearray.py
@@ -0,0 +1,164 @@
+import unittest
+from test.support import import_helper
+
+_testcapi = import_helper.import_module('_testcapi')
+from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
+
+NULL = None
+
+class ByteArraySubclass(bytearray):
+    pass
+
+class BytesLike:
+    def __init__(self, value):
+        self.value = value
+    def __bytes__(self):
+        return self.value
+
+
+class CAPITest(unittest.TestCase):
+    def test_check(self):
+        # Test PyByteArray_Check()
+        check = _testcapi.bytearray_check
+        self.assertTrue(check(bytearray(b'abc')))
+        self.assertFalse(check(b'abc'))
+        self.assertTrue(check(ByteArraySubclass(b'abc')))
+        self.assertFalse(check(BytesLike(b'abc')))
+        self.assertFalse(check(3))
+        self.assertFalse(check([]))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_checkexact(self):
+        # Test PyByteArray_CheckExact()
+        check = _testcapi.bytearray_checkexact
+        self.assertTrue(check(bytearray(b'abc')))
+        self.assertFalse(check(b'abc'))
+        self.assertFalse(check(ByteArraySubclass(b'abc')))
+        self.assertFalse(check(BytesLike(b'abc')))
+        self.assertFalse(check(3))
+        self.assertFalse(check([]))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_fromstringandsize(self):
+        # Test PyByteArray_FromStringAndSize()
+        fromstringandsize = _testcapi.bytearray_fromstringandsize
+
+        self.assertEqual(fromstringandsize(b'abc'), bytearray(b'abc'))
+        self.assertEqual(fromstringandsize(b'abc', 2), bytearray(b'ab'))
+        self.assertEqual(fromstringandsize(b'abc\0def'), bytearray(b'abc\0def'))
+        self.assertEqual(fromstringandsize(b'', 0), bytearray())
+        self.assertEqual(fromstringandsize(NULL, 0), bytearray())
+        self.assertEqual(len(fromstringandsize(NULL, 3)), 3)
+        self.assertRaises(MemoryError, fromstringandsize, NULL, PY_SSIZE_T_MAX)
+
+        self.assertRaises(SystemError, fromstringandsize, b'abc', -1)
+        self.assertRaises(SystemError, fromstringandsize, b'abc', PY_SSIZE_T_MIN)
+        self.assertRaises(SystemError, fromstringandsize, NULL, -1)
+        self.assertRaises(SystemError, fromstringandsize, NULL, PY_SSIZE_T_MIN)
+
+    def test_fromobject(self):
+        # Test PyByteArray_FromObject()
+        fromobject = _testcapi.bytearray_fromobject
+
+        self.assertEqual(fromobject(b'abc'), bytearray(b'abc'))
+        self.assertEqual(fromobject(bytearray(b'abc')), bytearray(b'abc'))
+        self.assertEqual(fromobject(ByteArraySubclass(b'abc')), bytearray(b'abc'))
+        self.assertEqual(fromobject([97, 98, 99]), bytearray(b'abc'))
+        self.assertEqual(fromobject(3), bytearray(b'\0\0\0'))
+        self.assertRaises(TypeError, fromobject, BytesLike(b'abc'))
+        self.assertRaises(TypeError, fromobject, 'abc')
+        self.assertRaises(TypeError, fromobject, object())
+
+        # CRASHES fromobject(NULL)
+
+    def test_size(self):
+        # Test PyByteArray_Size()
+        size = _testcapi.bytearray_size
+
+        self.assertEqual(size(bytearray(b'abc')), 3)
+        self.assertEqual(size(ByteArraySubclass(b'abc')), 3)
+
+        # CRASHES size(b'abc')
+        # CRASHES size(object())
+        # CRASHES size(NULL)
+
+    def test_asstring(self):
+        """Test PyByteArray_AsString()"""
+        asstring = _testcapi.bytearray_asstring
+
+        self.assertEqual(asstring(bytearray(b'abc'), 4), b'abc\0')
+        self.assertEqual(asstring(ByteArraySubclass(b'abc'), 4), b'abc\0')
+        self.assertEqual(asstring(bytearray(b'abc\0def'), 8), b'abc\0def\0')
+
+        # CRASHES asstring(b'abc', 0)
+        # CRASHES asstring(object()', 0)
+        # CRASHES asstring(NULL, 0)
+
+    def test_concat(self):
+        """Test PyByteArray_Concat()"""
+        concat = _testcapi.bytearray_concat
+
+        ba = bytearray(b'abc')
+        self.assertEqual(concat(ba, b'def'), bytearray(b'abcdef'))
+        self.assertEqual(ba, b'abc')
+
+        self.assertEqual(concat(b'abc', b'def'), bytearray(b'abcdef'))
+        self.assertEqual(concat(b'a\0b', b'c\0d'), bytearray(b'a\0bc\0d'))
+        self.assertEqual(concat(bytearray(b'abc'), b'def'), bytearray(b'abcdef'))
+        self.assertEqual(concat(b'abc', bytearray(b'def')), bytearray(b'abcdef'))
+        self.assertEqual(concat(bytearray(b'abc'), b''), bytearray(b'abc'))
+        self.assertEqual(concat(b'', bytearray(b'def')), bytearray(b'def'))
+        self.assertEqual(concat(memoryview(b'xabcy')[1:4], b'def'),
+                         bytearray(b'abcdef'))
+        self.assertEqual(concat(b'abc', memoryview(b'xdefy')[1:4]),
+                         bytearray(b'abcdef'))
+
+        self.assertRaises(TypeError, concat, memoryview(b'axbycz')[::2], b'def')
+        self.assertRaises(TypeError, concat, b'abc', memoryview(b'dxeyfz')[::2])
+        self.assertRaises(TypeError, concat, b'abc', 'def')
+        self.assertRaises(TypeError, concat, 'abc', b'def')
+        self.assertRaises(TypeError, concat, 'abc', 'def')
+        self.assertRaises(TypeError, concat, [], b'def')
+        self.assertRaises(TypeError, concat, b'abc', [])
+        self.assertRaises(TypeError, concat, [], [])
+
+        # CRASHES concat(NULL, bytearray(b'def'))
+        # CRASHES concat(bytearray(b'abc'), NULL)
+        # CRASHES concat(NULL, object())
+        # CRASHES concat(object(), NULL)
+
+    def test_resize(self):
+        """Test PyByteArray_Resize()"""
+        resize = _testcapi.bytearray_resize
+
+        ba = bytearray(b'abcdef')
+        self.assertEqual(resize(ba, 3), 0)
+        self.assertEqual(ba, bytearray(b'abc'))
+        self.assertEqual(resize(ba, 10), 0)
+        self.assertEqual(len(ba), 10)
+        self.assertEqual(ba[:3], bytearray(b'abc'))
+        self.assertEqual(resize(ba, 2**20), 0)
+        self.assertEqual(len(ba), 2**20)
+        self.assertEqual(ba[:3], bytearray(b'abc'))
+        self.assertEqual(resize(ba, 0), 0)
+        self.assertEqual(ba, bytearray())
+
+        ba = ByteArraySubclass(b'abcdef')
+        self.assertEqual(resize(ba, 3), 0)
+        self.assertEqual(ba, bytearray(b'abc'))
+
+        self.assertRaises(MemoryError, resize, bytearray(), PY_SSIZE_T_MAX)
+        self.assertRaises(MemoryError, resize, bytearray(1000), PY_SSIZE_T_MAX)
+
+        # CRASHES resize(bytearray(b'abc'), -1)
+        # CRASHES resize(b'abc', 0)
+        # CRASHES resize(object(), 0)
+        # CRASHES resize(NULL, 0)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_bytes.py b/Lib/test/test_capi/test_bytes.py
new file mode 100644
index 00000000000000..bb5d724ff187d4
--- /dev/null
+++ b/Lib/test/test_capi/test_bytes.py
@@ -0,0 +1,222 @@
+import unittest
+from test.support import import_helper
+
+_testcapi = import_helper.import_module('_testcapi')
+from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
+
+NULL = None
+
+class BytesSubclass(bytes):
+    pass
+
+class BytesLike:
+    def __init__(self, value):
+        self.value = value
+    def __bytes__(self):
+        return self.value
+
+
+class CAPITest(unittest.TestCase):
+    def test_check(self):
+        # Test PyBytes_Check()
+        check = _testcapi.bytes_check
+        self.assertTrue(check(b'abc'))
+        self.assertFalse(check('abc'))
+        self.assertFalse(check(bytearray(b'abc')))
+        self.assertTrue(check(BytesSubclass(b'abc')))
+        self.assertFalse(check(BytesLike(b'abc')))
+        self.assertFalse(check(3))
+        self.assertFalse(check([]))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_checkexact(self):
+        # Test PyBytes_CheckExact()
+        check = _testcapi.bytes_checkexact
+        self.assertTrue(check(b'abc'))
+        self.assertFalse(check('abc'))
+        self.assertFalse(check(bytearray(b'abc')))
+        self.assertFalse(check(BytesSubclass(b'abc')))
+        self.assertFalse(check(BytesLike(b'abc')))
+        self.assertFalse(check(3))
+        self.assertFalse(check([]))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_fromstringandsize(self):
+        # Test PyBytes_FromStringAndSize()
+        fromstringandsize = _testcapi.bytes_fromstringandsize
+
+        self.assertEqual(fromstringandsize(b'abc'), b'abc')
+        self.assertEqual(fromstringandsize(b'abc', 2), b'ab')
+        self.assertEqual(fromstringandsize(b'abc\0def'), b'abc\0def')
+        self.assertEqual(fromstringandsize(b'', 0), b'')
+        self.assertEqual(fromstringandsize(NULL, 0), b'')
+        self.assertEqual(len(fromstringandsize(NULL, 3)), 3)
+        self.assertRaises((MemoryError, OverflowError),
+                          fromstringandsize, NULL, PY_SSIZE_T_MAX)
+
+        self.assertRaises(SystemError, fromstringandsize, b'abc', -1)
+        self.assertRaises(SystemError, fromstringandsize, b'abc', PY_SSIZE_T_MIN)
+        self.assertRaises(SystemError, fromstringandsize, NULL, -1)
+        self.assertRaises(SystemError, fromstringandsize, NULL, PY_SSIZE_T_MIN)
+
+    def test_fromstring(self):
+        # Test PyBytes_FromString()
+        fromstring = _testcapi.bytes_fromstring
+
+        self.assertEqual(fromstring(b'abc\0def'), b'abc')
+        self.assertEqual(fromstring(b''), b'')
+
+        # CRASHES fromstring(NULL)
+
+    def test_fromobject(self):
+        # Test PyBytes_FromObject()
+        fromobject = _testcapi.bytes_fromobject
+
+        self.assertEqual(fromobject(b'abc'), b'abc')
+        self.assertEqual(fromobject(bytearray(b'abc')), b'abc')
+        self.assertEqual(fromobject(BytesSubclass(b'abc')), b'abc')
+        self.assertEqual(fromobject([97, 98, 99]), b'abc')
+        self.assertRaises(TypeError, fromobject, 3)
+        self.assertRaises(TypeError, fromobject, BytesLike(b'abc'))
+        self.assertRaises(TypeError, fromobject, 'abc')
+        self.assertRaises(TypeError, fromobject, object())
+        self.assertRaises(SystemError, fromobject, NULL)
+
+    def test_size(self):
+        # Test PyBytes_Size()
+        size = _testcapi.bytes_size
+
+        self.assertEqual(size(b'abc'), 3)
+        self.assertEqual(size(BytesSubclass(b'abc')), 3)
+        self.assertRaises(TypeError, size, bytearray(b'abc'))
+        self.assertRaises(TypeError, size, 'abc')
+        self.assertRaises(TypeError, size, object())
+
+        # CRASHES size(NULL)
+
+    def test_asstring(self):
+        """Test PyBytes_AsString()"""
+        asstring = _testcapi.bytes_asstring
+
+        self.assertEqual(asstring(b'abc', 4), b'abc\0')
+        self.assertEqual(asstring(b'abc\0def', 8), b'abc\0def\0')
+        self.assertRaises(TypeError, asstring, 'abc', 0)
+        self.assertRaises(TypeError, asstring, object(), 0)
+
+        # CRASHES asstring(NULL, 0)
+
+    def test_asstringandsize(self):
+        """Test PyBytes_AsStringAndSize()"""
+        asstringandsize = _testcapi.bytes_asstringandsize
+        asstringandsize_null = _testcapi.bytes_asstringandsize_null
+
+        self.assertEqual(asstringandsize(b'abc', 4), (b'abc\0', 3))
+        self.assertEqual(asstringandsize(b'abc\0def', 8), (b'abc\0def\0', 7))
+        self.assertEqual(asstringandsize_null(b'abc', 4), b'abc\0')
+        self.assertRaises(ValueError, asstringandsize_null, b'abc\0def', 8)
+        self.assertRaises(TypeError, asstringandsize, 'abc', 0)
+        self.assertRaises(TypeError, asstringandsize_null, 'abc', 0)
+        self.assertRaises(TypeError, asstringandsize, object(), 0)
+        self.assertRaises(TypeError, asstringandsize_null, object(), 0)
+
+        # CRASHES asstringandsize(NULL, 0)
+        # CRASHES asstringandsize_null(NULL, 0)
+
+    def test_repr(self):
+        # Test PyBytes_Repr()
+        bytes_repr = _testcapi.bytes_repr
+
+        self.assertEqual(bytes_repr(b'''abc''', 0), r"""b'abc'""")
+        self.assertEqual(bytes_repr(b'''abc''', 1), r"""b'abc'""")
+        self.assertEqual(bytes_repr(b'''a'b"c"d''', 0), r"""b'a\'b"c"d'""")
+        self.assertEqual(bytes_repr(b'''a'b"c"d''', 1), r"""b'a\'b"c"d'""")
+        self.assertEqual(bytes_repr(b'''a'b"c''', 0), r"""b'a\'b"c'""")
+        self.assertEqual(bytes_repr(b'''a'b"c''', 1), r"""b'a\'b"c'""")
+        self.assertEqual(bytes_repr(b'''a'b'c"d''', 0), r"""b'a\'b\'c"d'""")
+        self.assertEqual(bytes_repr(b'''a'b'c"d''', 1), r"""b'a\'b\'c"d'""")
+        self.assertEqual(bytes_repr(b'''a'b'c'd''', 0), r"""b'a\'b\'c\'d'""")
+        self.assertEqual(bytes_repr(b'''a'b'c'd''', 1), r'''b"a'b'c'd"''')
+
+        self.assertEqual(bytes_repr(BytesSubclass(b'abc'), 0), r"""b'abc'""")
+
+        # UDEFINED bytes_repr(object(), 0)
+        # CRASHES bytes_repr(NULL, 0)
+
+    def test_concat(self, concat=None):
+        """Test PyBytes_Concat()"""
+        if concat is None:
+            concat = _testcapi.bytes_concat
+
+        self.assertEqual(concat(b'abc', b'def'), b'abcdef')
+        self.assertEqual(concat(b'a\0b', b'c\0d'), b'a\0bc\0d')
+        self.assertEqual(concat(bytearray(b'abc'), b'def'), b'abcdef')
+        self.assertEqual(concat(b'abc', bytearray(b'def')), b'abcdef')
+        self.assertEqual(concat(bytearray(b'abc'), b''), b'abc')
+        self.assertEqual(concat(b'', bytearray(b'def')), b'def')
+        self.assertEqual(concat(memoryview(b'xabcy')[1:4], b'def'), b'abcdef')
+        self.assertEqual(concat(b'abc', memoryview(b'xdefy')[1:4]), b'abcdef')
+
+        self.assertEqual(concat(b'abc', b'def', True), b'abcdef')
+        self.assertEqual(concat(b'abc', bytearray(b'def'), True), b'abcdef')
+        # Check that it does not change the singleton
+        self.assertEqual(concat(bytes(), b'def', True), b'def')
+        self.assertEqual(len(bytes()), 0)
+
+        self.assertRaises(TypeError, concat, memoryview(b'axbycz')[::2], b'def')
+        self.assertRaises(TypeError, concat, b'abc', memoryview(b'dxeyfz')[::2])
+        self.assertRaises(TypeError, concat, b'abc', 'def')
+        self.assertRaises(TypeError, concat, 'abc', b'def')
+        self.assertRaises(TypeError, concat, 'abc', 'def')
+        self.assertRaises(TypeError, concat, [], b'def')
+        self.assertRaises(TypeError, concat, b'abc', [])
+        self.assertRaises(TypeError, concat, [], [])
+
+        self.assertEqual(concat(NULL, b'def'), NULL)
+        self.assertEqual(concat(b'abc', NULL), NULL)
+        self.assertEqual(concat(NULL, object()), NULL)
+        self.assertEqual(concat(object(), NULL), NULL)
+
+    def test_concatanddel(self):
+        """Test PyBytes_ConcatAndDel()"""
+        self.test_concat(_testcapi.bytes_concatanddel)
+
+    def test_decodeescape(self):
+        """Test PyBytes_DecodeEscape()"""
+        decodeescape = _testcapi.bytes_decodeescape
+
+        self.assertEqual(decodeescape(b'abc'), b'abc')
+        self.assertEqual(decodeescape(br'\t\n\r\x0b\x0c\x00\\\'\"'),
+                         b'''\t\n\r\v\f\0\\'"''')
+        self.assertEqual(decodeescape(b'\t\n\r\x0b\x0c\x00'), b'\t\n\r\v\f\0')
+        self.assertEqual(decodeescape(br'\xa1\xa2'), b'\xa1\xa2')
+        self.assertEqual(decodeescape(br'\2\24\241'), b'\x02\x14\xa1')
+        self.assertEqual(decodeescape(b'\xa1\xa2'), b'\xa1\xa2')
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(decodeescape(br'\u4f60'), br'\u4f60')
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(decodeescape(br'\z'), br'\z')
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(decodeescape(br'\541'), b'a')
+
+        for b in b'\\', br'\x', br'\xa', br'\xz', br'\xaz':
+            self.assertRaises(ValueError, decodeescape, b)
+            self.assertRaises(ValueError, decodeescape, b, 'strict')
+        self.assertEqual(decodeescape(br'x\xa', 'replace'), b'x?')
+        self.assertEqual(decodeescape(br'x\xay', 'replace'), b'x?y')
+        self.assertEqual(decodeescape(br'x\xa\xy', 'replace'), b'x??y')
+        self.assertEqual(decodeescape(br'x\xa\xy', 'ignore'), b'xy')
+        self.assertRaises(ValueError, decodeescape, b'\\', 'spam')
+        self.assertEqual(decodeescape(NULL), b'')
+        self.assertRaises(OverflowError, decodeescape, b'abc', NULL, PY_SSIZE_T_MAX)
+        self.assertRaises(OverflowError, decodeescape, NULL, NULL, PY_SSIZE_T_MAX)
+
+        # CRASHES decodeescape(b'abc', NULL, -1)
+        # CRASHES decodeescape(NULL, NULL, 1)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_codecs.py b/Lib/test/test_capi/test_codecs.py
index e46726192aa05b..682c56979c6dfa 100644
--- a/Lib/test/test_capi/test_codecs.py
+++ b/Lib/test/test_capi/test_codecs.py
@@ -1,10 +1,95 @@
 import unittest
+import sys
 from test.support import import_helper
 
 _testcapi = import_helper.import_module('_testcapi')
 
+NULL = None
+
 
 class CAPITest(unittest.TestCase):
+    # TODO: Test the following functions:
+    #
+    #   PyUnicode_BuildEncodingMap
+    #   PyUnicode_FSConverter
+    #   PyUnicode_FSDecoder
+    #   PyUnicode_DecodeMBCS
+    #   PyUnicode_DecodeMBCSStateful
+    #   PyUnicode_DecodeCodePageStateful
+    #   PyUnicode_AsMBCSString
+    #   PyUnicode_EncodeCodePage
+    #   PyUnicode_DecodeLocaleAndSize
+    #   PyUnicode_DecodeLocale
+    #   PyUnicode_EncodeLocale
+    #   PyUnicode_DecodeFSDefault
+    #   PyUnicode_DecodeFSDefaultAndSize
+    #   PyUnicode_EncodeFSDefault
+
+    def test_fromencodedobject(self):
+        """Test PyUnicode_FromEncodedObject()"""
+        fromencodedobject = _testcapi.unicode_fromencodedobject
+
+        self.assertEqual(fromencodedobject(b'abc', NULL), 'abc')
+        self.assertEqual(fromencodedobject(b'abc', 'ascii'), 'abc')
+        b = b'a\xc2\xa1\xe4\xbd\xa0\xf0\x9f\x98\x80'
+        s = 'a\xa1\u4f60\U0001f600'
+        self.assertEqual(fromencodedobject(b, NULL), s)
+        self.assertEqual(fromencodedobject(b, 'utf-8'), s)
+        self.assertEqual(fromencodedobject(b, 'latin1'), b.decode('latin1'))
+        self.assertRaises(UnicodeDecodeError, fromencodedobject, b, 'ascii')
+        self.assertEqual(fromencodedobject(b, 'ascii', 'replace'),
+                         'a' + '\ufffd'*9)
+        self.assertEqual(fromencodedobject(bytearray(b), NULL), s)
+        self.assertEqual(fromencodedobject(bytearray(b), 'utf-8'), s)
+        self.assertRaises(LookupError, fromencodedobject, b'abc', 'foo')
+        self.assertRaises(LookupError, fromencodedobject, b, 'ascii', 'foo')
+        self.assertRaises(TypeError, fromencodedobject, 'abc', NULL)
+        self.assertRaises(TypeError, fromencodedobject, 'abc', 'ascii')
+        self.assertRaises(TypeError, fromencodedobject, [], NULL)
+        self.assertRaises(TypeError, fromencodedobject, [], 'ascii')
+        self.assertRaises(SystemError, fromencodedobject, NULL, NULL)
+        self.assertRaises(SystemError, fromencodedobject, NULL, 'ascii')
+
+    def test_decode(self):
+        """Test PyUnicode_Decode()"""
+        decode = _testcapi.unicode_decode
+
+        self.assertEqual(decode(b'[\xe2\x82\xac]', 'utf-8'), '[\u20ac]')
+        self.assertEqual(decode(b'[\xa4]', 'iso8859-15'), '[\u20ac]')
+        self.assertEqual(decode(b'[\xa4]', 'iso8859-15', 'strict'), '[\u20ac]')
+        self.assertRaises(UnicodeDecodeError, decode, b'[\xa4]', 'utf-8')
+        self.assertEqual(decode(b'[\xa4]', 'utf-8', 'replace'), '[\ufffd]')
+
+        self.assertEqual(decode(b'[\xe2\x82\xac]', NULL), '[\u20ac]')
+        self.assertEqual(decode(b'[\xa4]', NULL, 'replace'), '[\ufffd]')
+
+        self.assertRaises(LookupError, decode, b'\xa4', 'foo')
+        self.assertRaises(LookupError, decode, b'\xa4', 'utf-8', 'foo')
+        # TODO: Test PyUnicode_Decode() with NULL as data and
+        # negative size.
+
+    def test_asencodedstring(self):
+        """Test PyUnicode_AsEncodedString()"""
+        asencodedstring = _testcapi.unicode_asencodedstring
+
+        self.assertEqual(asencodedstring('abc', NULL), b'abc')
+        self.assertEqual(asencodedstring('abc', 'ascii'), b'abc')
+        s = 'a\xa1\u4f60\U0001f600'
+        b = b'a\xc2\xa1\xe4\xbd\xa0\xf0\x9f\x98\x80'
+        self.assertEqual(asencodedstring(s, NULL), b)
+        self.assertEqual(asencodedstring(s, 'utf-8'), b)
+        self.assertEqual(asencodedstring('\xa1\xa2', 'latin1'), b'\xa1\xa2')
+        self.assertRaises(UnicodeEncodeError, asencodedstring, '\xa1\xa2', 'ascii')
+        self.assertEqual(asencodedstring(s, 'ascii', 'replace'), b'a???')
+
+        self.assertRaises(LookupError, asencodedstring, 'abc', 'foo')
+        self.assertRaises(LookupError, asencodedstring, s, 'ascii', 'foo')
+        self.assertRaises(TypeError, asencodedstring, b'abc', NULL)
+        self.assertRaises(TypeError, asencodedstring, b'abc', 'ascii')
+        self.assertRaises(TypeError, asencodedstring, [], NULL)
+        self.assertRaises(TypeError, asencodedstring, [], 'ascii')
+        # CRASHES asencodedstring(NULL, NULL)
+        # CRASHES asencodedstring(NULL, 'ascii')
 
     def test_decodeutf8(self):
         """Test PyUnicode_DecodeUTF8()"""
@@ -49,6 +134,387 @@ def test_decodeutf8stateful(self):
         # TODO: Test PyUnicode_DecodeUTF8Stateful() with NULL as the address of
         # "consumed".
 
+    def test_asutf8string(self):
+        """Test PyUnicode_AsUTF8String()"""
+        asutf8string = _testcapi.unicode_asutf8string
+
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            self.assertEqual(asutf8string(s), s.encode('utf-8'))
+
+        self.assertRaises(UnicodeEncodeError, asutf8string, '\ud8ff')
+        self.assertRaises(TypeError, asutf8string, b'abc')
+        self.assertRaises(TypeError, asutf8string, [])
+        # CRASHES asutf8string(NULL)
+
+    def test_decodeutf16(self):
+        """Test PyUnicode_DecodeUTF16()"""
+        decodeutf16 = _testcapi.unicode_decodeutf16
+
+        naturalbyteorder = -1 if sys.byteorder == 'little' else 1
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            b = s.encode('utf-16')
+            self.assertEqual(decodeutf16(0, b), (naturalbyteorder, s))
+            b = s.encode('utf-16le')
+            self.assertEqual(decodeutf16(-1, b), (-1, s))
+            self.assertEqual(decodeutf16(0, b'\xff\xfe'+b), (-1, s))
+            b = s.encode('utf-16be')
+            self.assertEqual(decodeutf16(1, b), (1, s))
+            self.assertEqual(decodeutf16(0, b'\xfe\xff'+b), (1, s))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf16, -1, b'a')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 1, b'a')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 0, b'\xff\xfea')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 0, b'\xfe\xffa')
+
+        self.assertRaises(UnicodeDecodeError, decodeutf16, -1, b'\x00\xde')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 1, b'\xde\x00')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 0, b'\xde\xde')
+        self.assertEqual(decodeutf16(-1, b'\x00\xde', 'replace'), (-1, '\ufffd'))
+        self.assertEqual(decodeutf16(1, b'\xde\x00', 'replace'), (1, '\ufffd'))
+        self.assertEqual(decodeutf16(0, b'\xde\xde', 'replace'), (0, '\ufffd'))
+        self.assertEqual(decodeutf16(0, b'\xff\xfe\x00\xde', 'replace'), (-1, '\ufffd'))
+        self.assertEqual(decodeutf16(0, b'\xfe\xff\xde\x00', 'replace'), (1, '\ufffd'))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf16, -1, b'\x3d\xd8')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 1, b'\xd8\x3d')
+        self.assertRaises(UnicodeDecodeError, decodeutf16, 0, b'\xd8\xd8')
+        self.assertEqual(decodeutf16(-1, b'\x3d\xd8', 'replace'), (-1, '\ufffd'))
+        self.assertEqual(decodeutf16(1, b'\xd8\x3d', 'replace'), (1, '\ufffd'))
+        self.assertEqual(decodeutf16(0, b'\xd8\xd8', 'replace'), (0, '\ufffd'))
+        self.assertEqual(decodeutf16(0, b'\xff\xfe\x3d\xd8', 'replace'), (-1, '\ufffd'))
+        self.assertEqual(decodeutf16(0, b'\xfe\xff\xd8\x3d', 'replace'), (1, '\ufffd'))
+
+        self.assertRaises(LookupError, decodeutf16, -1, b'\x00\xde', 'foo')
+        self.assertRaises(LookupError, decodeutf16, 1, b'\xde\x00', 'foo')
+        self.assertRaises(LookupError, decodeutf16, 0, b'\xde\xde', 'foo')
+        # TODO: Test PyUnicode_DecodeUTF16() with NULL as data and
+        # negative size.
+
+    def test_decodeutf16stateful(self):
+        """Test PyUnicode_DecodeUTF16Stateful()"""
+        decodeutf16stateful = _testcapi.unicode_decodeutf16stateful
+
+        naturalbyteorder = -1 if sys.byteorder == 'little' else 1
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            b = s.encode('utf-16')
+            self.assertEqual(decodeutf16stateful(0, b), (naturalbyteorder, s, len(b)))
+            b = s.encode('utf-16le')
+            self.assertEqual(decodeutf16stateful(-1, b), (-1, s, len(b)))
+            self.assertEqual(decodeutf16stateful(0, b'\xff\xfe'+b), (-1, s, len(b)+2))
+            b = s.encode('utf-16be')
+            self.assertEqual(decodeutf16stateful(1, b), (1, s, len(b)))
+            self.assertEqual(decodeutf16stateful(0, b'\xfe\xff'+b), (1, s, len(b)+2))
+
+        self.assertEqual(decodeutf16stateful(-1, b'\x61\x00\x3d'), (-1, 'a', 2))
+        self.assertEqual(decodeutf16stateful(-1, b'\x61\x00\x3d\xd8'), (-1, 'a', 2))
+        self.assertEqual(decodeutf16stateful(-1, b'\x61\x00\x3d\xd8\x00'), (-1, 'a', 2))
+        self.assertEqual(decodeutf16stateful(1, b'\x00\x61\xd8'), (1, 'a', 2))
+        self.assertEqual(decodeutf16stateful(1, b'\x00\x61\xd8\x3d'), (1, 'a', 2))
+        self.assertEqual(decodeutf16stateful(1, b'\x00\x61\xd8\x3d\xde'), (1, 'a', 2))
+        self.assertEqual(decodeutf16stateful(0, b'\xff\xfe\x61\x00\x3d\xd8\x00'), (-1, 'a', 4))
+        self.assertEqual(decodeutf16stateful(0, b'\xfe\xff\x00\x61\xd8\x3d\xde'), (1, 'a', 4))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf16stateful, -1, b'\x00\xde')
+        self.assertRaises(UnicodeDecodeError, decodeutf16stateful, 1, b'\xde\x00')
+        self.assertRaises(UnicodeDecodeError, decodeutf16stateful, 0, b'\xde\xde')
+        self.assertEqual(decodeutf16stateful(-1, b'\x00\xde', 'replace'), (-1, '\ufffd', 2))
+        self.assertEqual(decodeutf16stateful(1, b'\xde\x00', 'replace'), (1, '\ufffd', 2))
+        self.assertEqual(decodeutf16stateful(0, b'\xde\xde', 'replace'), (0, '\ufffd', 2))
+        self.assertEqual(decodeutf16stateful(0, b'\xff\xfe\x00\xde', 'replace'), (-1, '\ufffd', 4))
+        self.assertEqual(decodeutf16stateful(0, b'\xfe\xff\xde\x00', 'replace'), (1, '\ufffd', 4))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf16stateful, -1, b'\x3d\xd8\x61\x00')
+        self.assertEqual(decodeutf16stateful(-1, b'\x3d\xd8\x61\x00', 'replace'), (-1, '\ufffda', 4))
+        self.assertRaises(UnicodeDecodeError, decodeutf16stateful, 1, b'\xd8\x3d\x00\x61')
+        self.assertEqual(decodeutf16stateful(1, b'\xd8\x3d\x00\x61', 'replace'), (1, '\ufffda', 4))
+
+        self.assertRaises(LookupError, decodeutf16stateful, -1, b'\x00\xde', 'foo')
+        self.assertRaises(LookupError, decodeutf16stateful, 1, b'\xde\x00', 'foo')
+        self.assertRaises(LookupError, decodeutf16stateful, 0, b'\xde\xde', 'foo')
+        # TODO: Test PyUnicode_DecodeUTF16Stateful() with NULL as data and
+        # negative size.
+        # TODO: Test PyUnicode_DecodeUTF16Stateful() with NULL as the address of
+        # "consumed".
+
+    def test_asutf16string(self):
+        """Test PyUnicode_AsUTF16String()"""
+        asutf16string = _testcapi.unicode_asutf16string
+
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            self.assertEqual(asutf16string(s), s.encode('utf-16'))
+
+        self.assertRaises(UnicodeEncodeError, asutf16string, '\ud8ff')
+        self.assertRaises(TypeError, asutf16string, b'abc')
+        self.assertRaises(TypeError, asutf16string, [])
+        # CRASHES asutf16string(NULL)
+
+    def test_decodeutf32(self):
+        """Test PyUnicode_DecodeUTF8()"""
+        decodeutf32 = _testcapi.unicode_decodeutf32
+
+        naturalbyteorder = -1 if sys.byteorder == 'little' else 1
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            b = s.encode('utf-32')
+            self.assertEqual(decodeutf32(0, b), (naturalbyteorder, s))
+            b = s.encode('utf-32le')
+            self.assertEqual(decodeutf32(-1, b), (-1, s))
+            self.assertEqual(decodeutf32(0, b'\xff\xfe\x00\x00'+b), (-1, s))
+            b = s.encode('utf-32be')
+            self.assertEqual(decodeutf32(1, b), (1, s))
+            self.assertEqual(decodeutf32(0, b'\x00\x00\xfe\xff'+b), (1, s))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf32, -1, b'\x61\x00\x00\x00\x00')
+        self.assertRaises(UnicodeDecodeError, decodeutf32, 1, b'\x00\x00\x00\x61\x00')
+        self.assertRaises(UnicodeDecodeError, decodeutf32, 0, b'\xff\xfe\x00\x00\x61\x00\x00\x00\x00')
+        self.assertRaises(UnicodeDecodeError, decodeutf32, 0, b'\x00\x00\xfe\xff\x00\x00\x00\x61\x00')
+
+        self.assertRaises(UnicodeDecodeError, decodeutf32, -1, b'\xff\xff\xff\xff')
+        self.assertRaises(UnicodeDecodeError, decodeutf32, 1, b'\xff\xff\xff\xff')
+        self.assertRaises(UnicodeDecodeError, decodeutf32, 0, b'\xff\xff\xff\xff')
+        self.assertEqual(decodeutf32(-1, b'\xff\xff\xff\xff', 'replace'), (-1, '\ufffd'))
+        self.assertEqual(decodeutf32(1, b'\xff\xff\xff\xff', 'replace'), (1, '\ufffd'))
+        self.assertEqual(decodeutf32(0, b'\xff\xff\xff\xff', 'replace'), (0, '\ufffd'))
+        self.assertEqual(decodeutf32(0, b'\xff\xfe\x00\x00\xff\xff\xff\xff', 'replace'), (-1, '\ufffd'))
+        self.assertEqual(decodeutf32(0, b'\x00\x00\xfe\xff\xff\xff\xff\xff', 'replace'), (1, '\ufffd'))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf32, -1, b'\x3d\xd8\x00\x00')
+        self.assertEqual(decodeutf32(-1, b'\x3d\xd8\x00\x00', 'replace'), (-1, '\ufffd'))
+        self.assertRaises(UnicodeDecodeError, decodeutf32, 1, b'\x00\x00\xd8\x3d')
+        self.assertEqual(decodeutf32(1, b'\x00\x00\xd8\x3d', 'replace'), (1, '\ufffd'))
+
+        self.assertRaises(LookupError, decodeutf32, -1, b'\xff\xff\xff\xff', 'foo')
+        self.assertRaises(LookupError, decodeutf32, 1, b'\xff\xff\xff\xff', 'foo')
+        self.assertRaises(LookupError, decodeutf32, 0, b'\xff\xff\xff\xff', 'foo')
+        # TODO: Test PyUnicode_DecodeUTF32() with NULL as data and
+        # negative size.
+
+    def test_decodeutf32stateful(self):
+        """Test PyUnicode_DecodeUTF32Stateful()"""
+        decodeutf32stateful = _testcapi.unicode_decodeutf32stateful
+
+        naturalbyteorder = -1 if sys.byteorder == 'little' else 1
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            b = s.encode('utf-32')
+            self.assertEqual(decodeutf32stateful(0, b), (naturalbyteorder, s, len(b)))
+            b = s.encode('utf-32le')
+            self.assertEqual(decodeutf32stateful(-1, b), (-1, s, len(b)))
+            self.assertEqual(decodeutf32stateful(0, b'\xff\xfe\x00\x00'+b), (-1, s, len(b)+4))
+            b = s.encode('utf-32be')
+            self.assertEqual(decodeutf32stateful(1, b), (1, s, len(b)))
+            self.assertEqual(decodeutf32stateful(0, b'\x00\x00\xfe\xff'+b), (1, s, len(b)+4))
+
+        self.assertEqual(decodeutf32stateful(-1, b'\x61\x00\x00\x00\x00'), (-1, 'a', 4))
+        self.assertEqual(decodeutf32stateful(-1, b'\x61\x00\x00\x00\x00\xf6'), (-1, 'a', 4))
+        self.assertEqual(decodeutf32stateful(-1, b'\x61\x00\x00\x00\x00\xf6\x01'), (-1, 'a', 4))
+        self.assertEqual(decodeutf32stateful(1, b'\x00\x00\x00\x61\x00'), (1, 'a', 4))
+        self.assertEqual(decodeutf32stateful(1, b'\x00\x00\x00\x61\x00\x01'), (1, 'a', 4))
+        self.assertEqual(decodeutf32stateful(1, b'\x00\x00\x00\x61\x00\x01\xf6'), (1, 'a', 4))
+        self.assertEqual(decodeutf32stateful(0, b'\xff\xfe\x00\x00\x61\x00\x00\x00\x00\xf6\x01'), (-1, 'a', 8))
+        self.assertEqual(decodeutf32stateful(0, b'\x00\x00\xfe\xff\x00\x00\x00\x61\x00\x01\xf6'), (1, 'a', 8))
+
+        for b in b'\xff', b'\xff\xff', b'\xff\xff\xff':
+            self.assertEqual(decodeutf32stateful(-1, b), (-1, '', 0))
+            self.assertEqual(decodeutf32stateful(1, b), (1, '', 0))
+            self.assertEqual(decodeutf32stateful(0, b), (0, '', 0))
+            self.assertEqual(decodeutf32stateful(0, b'\xff\xfe\x00\x00'+b), (-1, '', 4))
+            self.assertEqual(decodeutf32stateful(0, b'\x00\x00\xfe\xff'+b), (1, '', 4))
+        self.assertRaises(UnicodeDecodeError, decodeutf32stateful, -1, b'\xff\xff\xff\xff')
+        self.assertRaises(UnicodeDecodeError, decodeutf32stateful, 1, b'\xff\xff\xff\xff')
+        self.assertRaises(UnicodeDecodeError, decodeutf32stateful, 0, b'\xff\xff\xff\xff')
+        self.assertEqual(decodeutf32stateful(-1, b'\xff\xff\xff\xff', 'replace'), (-1, '\ufffd', 4))
+        self.assertEqual(decodeutf32stateful(1, b'\xff\xff\xff\xff', 'replace'), (1, '\ufffd', 4))
+        self.assertEqual(decodeutf32stateful(0, b'\xff\xff\xff\xff', 'replace'), (0, '\ufffd', 4))
+        self.assertEqual(decodeutf32stateful(0, b'\xff\xfe\x00\x00\xff\xff\xff\xff', 'replace'), (-1, '\ufffd', 8))
+        self.assertEqual(decodeutf32stateful(0, b'\x00\x00\xfe\xff\xff\xff\xff\xff', 'replace'), (1, '\ufffd', 8))
+
+        self.assertRaises(UnicodeDecodeError, decodeutf32stateful, -1, b'\x3d\xd8\x00\x00')
+        self.assertEqual(decodeutf32stateful(-1, b'\x3d\xd8\x00\x00', 'replace'), (-1, '\ufffd', 4))
+        self.assertRaises(UnicodeDecodeError, decodeutf32stateful, 1, b'\x00\x00\xd8\x3d')
+        self.assertEqual(decodeutf32stateful(1, b'\x00\x00\xd8\x3d', 'replace'), (1, '\ufffd', 4))
+
+        self.assertRaises(LookupError, decodeutf32stateful, -1, b'\xff\xff\xff\xff', 'foo')
+        self.assertRaises(LookupError, decodeutf32stateful, 1, b'\xff\xff\xff\xff', 'foo')
+        self.assertRaises(LookupError, decodeutf32stateful, 0, b'\xff\xff\xff\xff', 'foo')
+        # TODO: Test PyUnicode_DecodeUTF32Stateful() with NULL as data and
+        # negative size.
+        # TODO: Test PyUnicode_DecodeUTF32Stateful() with NULL as the address of
+        # "consumed".
+
+    def test_asutf32string(self):
+        """Test PyUnicode_AsUTF32String()"""
+        asutf32string = _testcapi.unicode_asutf32string
+
+        for s in ['abc', '\xa1\xa2', '\u4f60\u597d', 'a\U0001f600']:
+            self.assertEqual(asutf32string(s), s.encode('utf-32'))
+
+        self.assertRaises(UnicodeEncodeError, asutf32string, '\ud8ff')
+        self.assertRaises(TypeError, asutf32string, b'abc')
+        self.assertRaises(TypeError, asutf32string, [])
+        # CRASHES asutf32string(NULL)
+
+    def test_decodelatin1(self):
+        """Test PyUnicode_DecodeLatin1()"""
+        decodelatin1 = _testcapi.unicode_decodelatin1
+
+        self.assertEqual(decodelatin1(b'abc'), 'abc')
+        self.assertEqual(decodelatin1(b'abc', 'strict'), 'abc')
+        self.assertEqual(decodelatin1(b'\xa1\xa2'), '\xa1\xa2')
+        self.assertEqual(decodelatin1(b'\xa1\xa2', 'strict'), '\xa1\xa2')
+        # TODO: Test PyUnicode_DecodeLatin1() with NULL as data and
+        # negative size.
+
+    def test_aslatin1string(self):
+        """Test PyUnicode_AsLatin1String()"""
+        aslatin1string = _testcapi.unicode_aslatin1string
+
+        self.assertEqual(aslatin1string('abc'), b'abc')
+        self.assertEqual(aslatin1string('\xa1\xa2'), b'\xa1\xa2')
+
+        self.assertRaises(UnicodeEncodeError, aslatin1string, '\u4f60')
+        self.assertRaises(TypeError, aslatin1string, b'abc')
+        self.assertRaises(TypeError, aslatin1string, [])
+        # CRASHES aslatin1string(NULL)
+
+    def test_decodeascii(self):
+        """Test PyUnicode_DecodeASCII()"""
+        decodeascii = _testcapi.unicode_decodeascii
+
+        self.assertEqual(decodeascii(b'abc'), 'abc')
+        self.assertEqual(decodeascii(b'abc', 'strict'), 'abc')
+
+        self.assertRaises(UnicodeDecodeError, decodeascii, b'\xff')
+        self.assertEqual(decodeascii(b'a\xff', 'replace'), 'a\ufffd')
+        self.assertEqual(decodeascii(b'a\xffb', 'replace'), 'a\ufffdb')
+
+        self.assertRaises(LookupError, decodeascii, b'a\xff', 'foo')
+        # TODO: Test PyUnicode_DecodeASCII() with NULL as data and
+        # negative size.
+
+    def test_asasciistring(self):
+        """Test PyUnicode_AsASCIIString()"""
+        asasciistring = _testcapi.unicode_asasciistring
+
+        self.assertEqual(asasciistring('abc'), b'abc')
+
+        self.assertRaises(UnicodeEncodeError, asasciistring, '\x80')
+        self.assertRaises(TypeError, asasciistring, b'abc')
+        self.assertRaises(TypeError, asasciistring, [])
+        # CRASHES asasciistring(NULL)
+
+    def test_decodecharmap(self):
+        """Test PyUnicode_DecodeCharmap()"""
+        decodecharmap = _testcapi.unicode_decodecharmap
+
+        self.assertEqual(decodecharmap(b'\3\0\7', {0: 'a', 3: 'b', 7: 'c'}), 'bac')
+        self.assertEqual(decodecharmap(b'\1\0\2', ['a', 'b', 'c']), 'bac')
+        self.assertEqual(decodecharmap(b'\1\0\2', 'abc'), 'bac')
+        self.assertEqual(decodecharmap(b'\1\0\2', ['\xa1', '\xa2', '\xa3']), '\xa2\xa1\xa3')
+        self.assertEqual(decodecharmap(b'\1\0\2', ['\u4f60', '\u597d', '\u4e16']), '\u597d\u4f60\u4e16')
+        self.assertEqual(decodecharmap(b'\1\0\2', ['\U0001f600', '\U0001f601', '\U0001f602']), '\U0001f601\U0001f600\U0001f602')
+
+        self.assertEqual(decodecharmap(b'\1\0\2', [97, 98, 99]), 'bac')
+        self.assertEqual(decodecharmap(b'\1\0\2', ['', 'b', 'cd']), 'bcd')
+
+        self.assertRaises(UnicodeDecodeError, decodecharmap, b'\0', {})
+        self.assertRaises(UnicodeDecodeError, decodecharmap, b'\0', {0: None})
+        self.assertEqual(decodecharmap(b'\1\0\2', [None, 'b', 'c'], 'replace'), 'b\ufffdc')
+        self.assertEqual(decodecharmap(b'\1\0\2\xff', NULL), '\1\0\2\xff')
+        self.assertRaises(TypeError, decodecharmap, b'\0', 42)
+
+        # TODO: Test PyUnicode_DecodeCharmap() with NULL as data and
+        # negative size.
+
+    def test_ascharmapstring(self):
+        """Test PyUnicode_AsCharmapString()"""
+        ascharmapstring = _testcapi.unicode_ascharmapstring
+
+        self.assertEqual(ascharmapstring('abc', {97: 3, 98: 0, 99: 7}), b'\3\0\7')
+        self.assertEqual(ascharmapstring('\xa1\xa2\xa3', {0xa1: 3, 0xa2: 0, 0xa3: 7}), b'\3\0\7')
+        self.assertEqual(ascharmapstring('\u4f60\u597d\u4e16', {0x4f60: 3, 0x597d: 0, 0x4e16: 7}), b'\3\0\7')
+        self.assertEqual(ascharmapstring('\U0001f600\U0001f601\U0001f602', {0x1f600: 3, 0x1f601: 0, 0x1f602: 7}), b'\3\0\7')
+        self.assertEqual(ascharmapstring('abc', {97: 3, 98: b'', 99: b'spam'}), b'\3spam')
+
+        self.assertRaises(UnicodeEncodeError, ascharmapstring, 'a', {})
+        self.assertRaises(UnicodeEncodeError, ascharmapstring, 'a', {97: None})
+        self.assertRaises(TypeError, ascharmapstring, b'a', {})
+        self.assertRaises(TypeError, ascharmapstring, [], {})
+        self.assertRaises(TypeError, ascharmapstring, 'a', NULL)
+        # CRASHES ascharmapstring(NULL, {})
+
+    def test_decodeunicodeescape(self):
+        """Test PyUnicode_DecodeUnicodeEscape()"""
+        decodeunicodeescape = _testcapi.unicode_decodeunicodeescape
+
+        self.assertEqual(decodeunicodeescape(b'abc'), 'abc')
+        self.assertEqual(decodeunicodeescape(br'\t\n\r\x0b\x0c\x00\\'), '\t\n\r\v\f\0\\')
+        self.assertEqual(decodeunicodeescape(b'\t\n\r\x0b\x0c\x00'), '\t\n\r\v\f\0')
+        self.assertEqual(decodeunicodeescape(br'\xa1\xa2'), '\xa1\xa2')
+        self.assertEqual(decodeunicodeescape(b'\xa1\xa2'), '\xa1\xa2')
+        self.assertEqual(decodeunicodeescape(br'\u4f60\u597d'), '\u4f60\u597d')
+        self.assertEqual(decodeunicodeescape(br'\U0001f600'), '\U0001f600')
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(decodeunicodeescape(br'\z'), r'\z')
+
+        for b in b'\\', br'\xa', br'\u4f6', br'\U0001f60':
+            self.assertRaises(UnicodeDecodeError, decodeunicodeescape, b)
+            self.assertRaises(UnicodeDecodeError, decodeunicodeescape, b, 'strict')
+        self.assertEqual(decodeunicodeescape(br'x\U0001f60', 'replace'), 'x\ufffd')
+        self.assertEqual(decodeunicodeescape(br'x\U0001f60y', 'replace'), 'x\ufffdy')
+
+        self.assertRaises(LookupError, decodeunicodeescape, b'\\', 'foo')
+        # TODO: Test PyUnicode_DecodeUnicodeEscape() with NULL as data and
+        # negative size.
+
+    def test_asunicodeescapestring(self):
+        """Test PyUnicode_AsUnicodeEscapeString()"""
+        asunicodeescapestring = _testcapi.unicode_asunicodeescapestring
+
+        self.assertEqual(asunicodeescapestring('abc'), b'abc')
+        self.assertEqual(asunicodeescapestring('\t\n\r\v\f\0\\'), br'\t\n\r\x0b\x0c\x00\\')
+        self.assertEqual(asunicodeescapestring('\xa1\xa2'), br'\xa1\xa2')
+        self.assertEqual(asunicodeescapestring('\u4f60\u597d'), br'\u4f60\u597d')
+        self.assertEqual(asunicodeescapestring('\U0001f600'), br'\U0001f600')
+
+        self.assertRaises(TypeError, asunicodeescapestring, b'abc')
+        self.assertRaises(TypeError, asunicodeescapestring, [])
+        # CRASHES asunicodeescapestring(NULL)
+
+    def test_decoderawunicodeescape(self):
+        """Test PyUnicode_DecodeRawUnicodeEscape()"""
+        decoderawunicodeescape = _testcapi.unicode_decoderawunicodeescape
+
+        self.assertEqual(decoderawunicodeescape(b'abc'), 'abc')
+        self.assertEqual(decoderawunicodeescape(b'\t\n\r\v\f\0\\'), '\t\n\r\v\f\0\\')
+        self.assertEqual(decoderawunicodeescape(b'\xa1\xa2'), '\xa1\xa2')
+        self.assertEqual(decoderawunicodeescape(br'\u4f60\u597d'), '\u4f60\u597d')
+        self.assertEqual(decoderawunicodeescape(br'\U0001f600'), '\U0001f600')
+        self.assertEqual(decoderawunicodeescape(br'\xa1\xa2'), r'\xa1\xa2')
+        self.assertEqual(decoderawunicodeescape(br'\z'), r'\z')
+
+        for b in br'\u4f6', br'\U0001f60':
+            self.assertRaises(UnicodeDecodeError, decoderawunicodeescape, b)
+            self.assertRaises(UnicodeDecodeError, decoderawunicodeescape, b, 'strict')
+        self.assertEqual(decoderawunicodeescape(br'x\U0001f60', 'replace'), 'x\ufffd')
+        self.assertEqual(decoderawunicodeescape(br'x\U0001f60y', 'replace'), 'x\ufffdy')
+
+        self.assertRaises(LookupError, decoderawunicodeescape, br'\U0001f60', 'foo')
+        # TODO: Test PyUnicode_DecodeRawUnicodeEscape() with NULL as data and
+        # negative size.
+
+    def test_asrawunicodeescapestring(self):
+        """Test PyUnicode_AsRawUnicodeEscapeString()"""
+        asrawunicodeescapestring = _testcapi.unicode_asrawunicodeescapestring
+
+        self.assertEqual(asrawunicodeescapestring('abc'), b'abc')
+        self.assertEqual(asrawunicodeescapestring('\t\n\r\v\f\0\\'), b'\t\n\r\v\f\0\\')
+        self.assertEqual(asrawunicodeescapestring('\xa1\xa2'), b'\xa1\xa2')
+        self.assertEqual(asrawunicodeescapestring('\u4f60\u597d'), br'\u4f60\u597d')
+        self.assertEqual(asrawunicodeescapestring('\U0001f600'), br'\U0001f600')
+
+        self.assertRaises(TypeError, asrawunicodeescapestring, b'abc')
+        self.assertRaises(TypeError, asrawunicodeescapestring, [])
+        # CRASHES asrawunicodeescapestring(NULL)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_capi/test_complex.py b/Lib/test/test_capi/test_complex.py
new file mode 100644
index 00000000000000..d6fc1f077c40aa
--- /dev/null
+++ b/Lib/test/test_capi/test_complex.py
@@ -0,0 +1,233 @@
+from math import isnan
+import errno
+import unittest
+import warnings
+
+from test.test_capi.test_getargs import (BadComplex, BadComplex2, Complex,
+                                         FloatSubclass, Float, BadFloat,
+                                         BadFloat2, ComplexSubclass)
+from test.support import import_helper
+
+
+_testcapi = import_helper.import_module('_testcapi')
+
+NULL = None
+INF = float("inf")
+NAN = float("nan")
+DBL_MAX = _testcapi.DBL_MAX
+
+
+class BadComplex3:
+    def __complex__(self):
+        raise RuntimeError
+
+
+class CAPIComplexTest(unittest.TestCase):
+    def test_check(self):
+        # Test PyComplex_Check()
+        check = _testcapi.complex_check
+
+        self.assertTrue(check(1+2j))
+        self.assertTrue(check(ComplexSubclass(1+2j)))
+        self.assertFalse(check(Complex()))
+        self.assertFalse(check(3))
+        self.assertFalse(check(3.0))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_checkexact(self):
+        # PyComplex_CheckExact()
+        checkexact = _testcapi.complex_checkexact
+
+        self.assertTrue(checkexact(1+2j))
+        self.assertFalse(checkexact(ComplexSubclass(1+2j)))
+        self.assertFalse(checkexact(Complex()))
+        self.assertFalse(checkexact(3))
+        self.assertFalse(checkexact(3.0))
+        self.assertFalse(checkexact(object()))
+
+        # CRASHES checkexact(NULL)
+
+    def test_fromccomplex(self):
+        # Test PyComplex_FromCComplex()
+        fromccomplex = _testcapi.complex_fromccomplex
+
+        self.assertEqual(fromccomplex(1+2j), 1.0+2.0j)
+
+    def test_fromdoubles(self):
+        # Test PyComplex_FromDoubles()
+        fromdoubles = _testcapi.complex_fromdoubles
+
+        self.assertEqual(fromdoubles(1.0, 2.0), 1.0+2.0j)
+
+    def test_realasdouble(self):
+        # Test PyComplex_RealAsDouble()
+        realasdouble = _testcapi.complex_realasdouble
+
+        self.assertEqual(realasdouble(1+2j), 1.0)
+        self.assertEqual(realasdouble(-1+0j), -1.0)
+        self.assertEqual(realasdouble(4.25), 4.25)
+        self.assertEqual(realasdouble(-1.0), -1.0)
+        self.assertEqual(realasdouble(42), 42.)
+        self.assertEqual(realasdouble(-1), -1.0)
+
+        # Test subclasses of complex/float
+        self.assertEqual(realasdouble(ComplexSubclass(1+2j)), 1.0)
+        self.assertEqual(realasdouble(FloatSubclass(4.25)), 4.25)
+
+        # Test types with __complex__ dunder method
+        # Function doesn't support classes with __complex__ dunder, see #109598
+        self.assertRaises(TypeError, realasdouble, Complex())
+
+        # Test types with __float__ dunder method
+        self.assertEqual(realasdouble(Float()), 4.25)
+        self.assertRaises(TypeError, realasdouble, BadFloat())
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(realasdouble(BadFloat2()), 4.25)
+
+        self.assertRaises(TypeError, realasdouble, object())
+
+        # CRASHES realasdouble(NULL)
+
+    def test_imagasdouble(self):
+        # Test PyComplex_ImagAsDouble()
+        imagasdouble = _testcapi.complex_imagasdouble
+
+        self.assertEqual(imagasdouble(1+2j), 2.0)
+        self.assertEqual(imagasdouble(1-1j), -1.0)
+        self.assertEqual(imagasdouble(4.25), 0.0)
+        self.assertEqual(imagasdouble(42), 0.0)
+
+        # Test subclasses of complex/float
+        self.assertEqual(imagasdouble(ComplexSubclass(1+2j)), 2.0)
+        self.assertEqual(imagasdouble(FloatSubclass(4.25)), 0.0)
+
+        # Test types with __complex__ dunder method
+        # Function doesn't support classes with __complex__ dunder, see #109598
+        self.assertEqual(imagasdouble(Complex()), 0.0)
+
+        # Function returns 0.0 anyway, see #109598
+        self.assertEqual(imagasdouble(object()), 0.0)
+
+        # CRASHES imagasdouble(NULL)
+
+    def test_asccomplex(self):
+        # Test PyComplex_AsCComplex()
+        asccomplex = _testcapi.complex_asccomplex
+
+        self.assertEqual(asccomplex(1+2j), 1.0+2.0j)
+        self.assertEqual(asccomplex(-1+2j), -1.0+2.0j)
+        self.assertEqual(asccomplex(4.25), 4.25+0.0j)
+        self.assertEqual(asccomplex(-1.0), -1.0+0.0j)
+        self.assertEqual(asccomplex(42), 42+0j)
+        self.assertEqual(asccomplex(-1), -1.0+0.0j)
+
+        # Test subclasses of complex/float
+        self.assertEqual(asccomplex(ComplexSubclass(1+2j)), 1.0+2.0j)
+        self.assertEqual(asccomplex(FloatSubclass(4.25)), 4.25+0.0j)
+
+        # Test types with __complex__ dunder method
+        self.assertEqual(asccomplex(Complex()), 4.25+0.5j)
+        self.assertRaises(TypeError, asccomplex, BadComplex())
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(asccomplex(BadComplex2()), 4.25+0.5j)
+        with warnings.catch_warnings():
+            warnings.simplefilter("error", DeprecationWarning)
+            self.assertRaises(DeprecationWarning, asccomplex, BadComplex2())
+        self.assertRaises(RuntimeError, asccomplex, BadComplex3())
+
+        # Test types with __float__ dunder method
+        self.assertEqual(asccomplex(Float()), 4.25+0.0j)
+        self.assertRaises(TypeError, asccomplex, BadFloat())
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(asccomplex(BadFloat2()), 4.25+0.0j)
+
+        self.assertRaises(TypeError, asccomplex, object())
+
+        # CRASHES asccomplex(NULL)
+
+    def test_py_c_sum(self):
+        # Test _Py_c_sum()
+        _py_c_sum = _testcapi._py_c_sum
+
+        self.assertEqual(_py_c_sum(1, 1j), (1+1j, 0))
+
+    def test_py_c_diff(self):
+        # Test _Py_c_diff()
+        _py_c_diff = _testcapi._py_c_diff
+
+        self.assertEqual(_py_c_diff(1, 1j), (1-1j, 0))
+
+    def test_py_c_neg(self):
+        # Test _Py_c_neg()
+        _py_c_neg = _testcapi._py_c_neg
+
+        self.assertEqual(_py_c_neg(1+1j), -1-1j)
+
+    def test_py_c_prod(self):
+        # Test _Py_c_prod()
+        _py_c_prod = _testcapi._py_c_prod
+
+        self.assertEqual(_py_c_prod(2, 1j), (2j, 0))
+
+    def test_py_c_quot(self):
+        # Test _Py_c_quot()
+        _py_c_quot = _testcapi._py_c_quot
+
+        self.assertEqual(_py_c_quot(1, 1j), (-1j, 0))
+        self.assertEqual(_py_c_quot(1, -1j), (1j, 0))
+        self.assertEqual(_py_c_quot(1j, 2), (0.5j, 0))
+        self.assertEqual(_py_c_quot(1j, -2), (-0.5j, 0))
+        self.assertEqual(_py_c_quot(1, 2j), (-0.5j, 0))
+
+        z, e = _py_c_quot(NAN, 1j)
+        self.assertTrue(isnan(z.real))
+        self.assertTrue(isnan(z.imag))
+        self.assertEqual(e, 0)
+
+        z, e = _py_c_quot(1j, NAN)
+        self.assertTrue(isnan(z.real))
+        self.assertTrue(isnan(z.imag))
+        self.assertEqual(e, 0)
+
+        self.assertEqual(_py_c_quot(1, 0j)[1], errno.EDOM)
+
+    def test_py_c_pow(self):
+        # Test _Py_c_pow()
+        _py_c_pow = _testcapi._py_c_pow
+
+        self.assertEqual(_py_c_pow(1j, 0j), (1+0j, 0))
+        self.assertEqual(_py_c_pow(1, 1j), (1+0j, 0))
+        self.assertEqual(_py_c_pow(0j, 1), (0j, 0))
+        self.assertAlmostEqual(_py_c_pow(1j, 2)[0], -1.0+0j)
+
+        r, e = _py_c_pow(1+1j, -1)
+        self.assertAlmostEqual(r, 0.5-0.5j)
+        self.assertEqual(e, 0)
+
+        self.assertEqual(_py_c_pow(0j, -1)[1], errno.EDOM)
+        self.assertEqual(_py_c_pow(0j, 1j)[1], errno.EDOM)
+        self.assertEqual(_py_c_pow(*[DBL_MAX+1j]*2)[0], complex(*[INF]*2))
+
+
+    def test_py_c_abs(self):
+        # Test _Py_c_abs()
+        _py_c_abs = _testcapi._py_c_abs
+
+        self.assertEqual(_py_c_abs(-1), (1.0, 0))
+        self.assertEqual(_py_c_abs(1j), (1.0, 0))
+
+        self.assertEqual(_py_c_abs(complex('+inf+1j')), (INF, 0))
+        self.assertEqual(_py_c_abs(complex('-inf+1j')), (INF, 0))
+        self.assertEqual(_py_c_abs(complex('1.25+infj')), (INF, 0))
+        self.assertEqual(_py_c_abs(complex('1.25-infj')), (INF, 0))
+
+        self.assertTrue(isnan(_py_c_abs(complex('1.25+nanj'))[0]))
+        self.assertTrue(isnan(_py_c_abs(complex('nan-1j'))[0]))
+
+        self.assertEqual(_py_c_abs(complex(*[DBL_MAX]*2))[1], errno.ERANGE)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_dict.py b/Lib/test/test_capi/test_dict.py
new file mode 100644
index 00000000000000..57a7238588eae0
--- /dev/null
+++ b/Lib/test/test_capi/test_dict.py
@@ -0,0 +1,524 @@
+import unittest
+from collections import OrderedDict, UserDict
+from types import MappingProxyType
+from test import support
+import _testcapi
+
+
+NULL = None
+INVALID_UTF8 = b'\xff'
+
+class DictSubclass(dict):
+    def __getitem__(self, key):
+        raise RuntimeError('do not get evil')
+    def __setitem__(self, key, value):
+        raise RuntimeError('do not set evil')
+    def __delitem__(self, key):
+        raise RuntimeError('do not del evil')
+
+def gen():
+    yield 'a'
+    yield 'b'
+    yield 'c'
+
+
+class CAPITest(unittest.TestCase):
+
+    def test_dict_check(self):
+        check = _testcapi.dict_check
+        self.assertTrue(check({1: 2}))
+        self.assertTrue(check(OrderedDict({1: 2})))
+        self.assertFalse(check(UserDict({1: 2})))
+        self.assertFalse(check([1, 2]))
+        self.assertFalse(check(object()))
+        # CRASHES check(NULL)
+
+    def test_dict_checkexact(self):
+        check = _testcapi.dict_checkexact
+        self.assertTrue(check({1: 2}))
+        self.assertFalse(check(OrderedDict({1: 2})))
+        self.assertFalse(check(UserDict({1: 2})))
+        self.assertFalse(check([1, 2]))
+        self.assertFalse(check(object()))
+        # CRASHES check(NULL)
+
+    def test_dict_new(self):
+        dict_new = _testcapi.dict_new
+        dct = dict_new()
+        self.assertEqual(dct, {})
+        self.assertIs(type(dct), dict)
+        dct2 = dict_new()
+        self.assertIsNot(dct2, dct)
+
+    def test_dictproxy_new(self):
+        dictproxy_new = _testcapi.dictproxy_new
+        for dct in {1: 2}, OrderedDict({1: 2}), UserDict({1: 2}):
+            proxy = dictproxy_new(dct)
+            self.assertIs(type(proxy), MappingProxyType)
+            self.assertEqual(proxy, dct)
+            with self.assertRaises(TypeError):
+                proxy[1] = 3
+            self.assertEqual(proxy[1], 2)
+            dct[1] = 4
+            self.assertEqual(proxy[1], 4)
+
+        self.assertRaises(TypeError, dictproxy_new, [])
+        self.assertRaises(TypeError, dictproxy_new, 42)
+        # CRASHES dictproxy_new(NULL)
+
+    def test_dict_copy(self):
+        copy = _testcapi.dict_copy
+        for dct in {1: 2}, OrderedDict({1: 2}):
+            dct_copy = copy(dct)
+            self.assertIs(type(dct_copy), dict)
+            self.assertEqual(dct_copy, dct)
+
+        self.assertRaises(SystemError, copy, UserDict())
+        self.assertRaises(SystemError, copy, [])
+        self.assertRaises(SystemError, copy, 42)
+        self.assertRaises(SystemError, copy, NULL)
+
+    def test_dict_clear(self):
+        clear = _testcapi.dict_clear
+        dct = {1: 2}
+        clear(dct)
+        self.assertEqual(dct, {})
+
+        # NOTE: It is not safe to call it with OrderedDict.
+
+        # Has no effect for non-dicts.
+        dct = UserDict({1: 2})
+        clear(dct)
+        self.assertEqual(dct, {1: 2})
+        lst = [1, 2]
+        clear(lst)
+        self.assertEqual(lst, [1, 2])
+        clear(object())
+
+        # CRASHES? clear(NULL)
+
+    def test_dict_size(self):
+        size = _testcapi.dict_size
+        self.assertEqual(size({1: 2}), 1)
+        self.assertEqual(size(OrderedDict({1: 2})), 1)
+
+        self.assertRaises(SystemError, size, UserDict())
+        self.assertRaises(SystemError, size, [])
+        self.assertRaises(SystemError, size, 42)
+        self.assertRaises(SystemError, size, object())
+        self.assertRaises(SystemError, size, NULL)
+
+    def test_dict_getitem(self):
+        getitem = _testcapi.dict_getitem
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitem(dct, 'a'), 1)
+        self.assertIs(getitem(dct, 'b'), KeyError)
+        self.assertEqual(getitem(dct, '\U0001f40d'), 2)
+
+        dct2 = DictSubclass(dct)
+        self.assertEqual(getitem(dct2, 'a'), 1)
+        self.assertIs(getitem(dct2, 'b'), KeyError)
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertIs(getitem({}, []), KeyError)  # unhashable
+            self.assertEqual(cm.unraisable.exc_type, TypeError)
+            self.assertEqual(str(cm.unraisable.exc_value),
+                             "unhashable type: 'list'")
+
+        self.assertIs(getitem(42, 'a'), KeyError)
+        self.assertIs(getitem([1], 0), KeyError)
+        # CRASHES getitem({}, NULL)
+        # CRASHES getitem(NULL, 'a')
+
+    def test_dict_getitemstring(self):
+        getitemstring = _testcapi.dict_getitemstring
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitemstring(dct, b'a'), 1)
+        self.assertIs(getitemstring(dct, b'b'), KeyError)
+        self.assertEqual(getitemstring(dct, '\U0001f40d'.encode()), 2)
+
+        dct2 = DictSubclass(dct)
+        self.assertEqual(getitemstring(dct2, b'a'), 1)
+        self.assertIs(getitemstring(dct2, b'b'), KeyError)
+
+        with support.catch_unraisable_exception() as cm:
+            self.assertIs(getitemstring({}, INVALID_UTF8), KeyError)
+            self.assertEqual(cm.unraisable.exc_type, UnicodeDecodeError)
+            self.assertRegex(str(cm.unraisable.exc_value),
+                             "'utf-8' codec can't decode")
+
+        self.assertIs(getitemstring(42, b'a'), KeyError)
+        self.assertIs(getitemstring([], b'a'), KeyError)
+        # CRASHES getitemstring({}, NULL)
+        # CRASHES getitemstring(NULL, b'a')
+
+    def test_dict_getitemref(self):
+        getitem = _testcapi.dict_getitemref
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitem(dct, 'a'), 1)
+        self.assertIs(getitem(dct, 'b'), KeyError)
+        self.assertEqual(getitem(dct, '\U0001f40d'), 2)
+
+        dct2 = DictSubclass(dct)
+        self.assertEqual(getitem(dct2, 'a'), 1)
+        self.assertIs(getitem(dct2, 'b'), KeyError)
+
+        self.assertRaises(SystemError, getitem, 42, 'a')
+        self.assertRaises(TypeError, getitem, {}, [])  # unhashable
+        self.assertRaises(SystemError, getitem, [], 1)
+        self.assertRaises(SystemError, getitem, [], 'a')
+        # CRASHES getitem({}, NULL)
+        # CRASHES getitem(NULL, 'a')
+
+    def test_dict_getitemstringref(self):
+        getitemstring = _testcapi.dict_getitemstringref
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitemstring(dct, b'a'), 1)
+        self.assertIs(getitemstring(dct, b'b'), KeyError)
+        self.assertEqual(getitemstring(dct, '\U0001f40d'.encode()), 2)
+
+        dct2 = DictSubclass(dct)
+        self.assertEqual(getitemstring(dct2, b'a'), 1)
+        self.assertIs(getitemstring(dct2, b'b'), KeyError)
+
+        self.assertRaises(SystemError, getitemstring, 42, b'a')
+        self.assertRaises(UnicodeDecodeError, getitemstring, {}, INVALID_UTF8)
+        self.assertRaises(SystemError, getitemstring, [], b'a')
+        # CRASHES getitemstring({}, NULL)
+        # CRASHES getitemstring(NULL, b'a')
+
+    def test_dict_getitemwitherror(self):
+        getitem = _testcapi.dict_getitemwitherror
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertEqual(getitem(dct, 'a'), 1)
+        self.assertIs(getitem(dct, 'b'), KeyError)
+        self.assertEqual(getitem(dct, '\U0001f40d'), 2)
+
+        dct2 = DictSubclass(dct)
+        self.assertEqual(getitem(dct2, 'a'), 1)
+        self.assertIs(getitem(dct2, 'b'), KeyError)
+
+        self.assertRaises(SystemError, getitem, 42, 'a')
+        self.assertRaises(TypeError, getitem, {}, [])  # unhashable
+        self.assertRaises(SystemError, getitem, [], 1)
+        self.assertRaises(SystemError, getitem, [], 'a')
+        # CRASHES getitem({}, NULL)
+        # CRASHES getitem(NULL, 'a')
+
+    def test_dict_contains(self):
+        contains = _testcapi.dict_contains
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertTrue(contains(dct, 'a'))
+        self.assertFalse(contains(dct, 'b'))
+        self.assertTrue(contains(dct, '\U0001f40d'))
+
+        dct2 = DictSubclass(dct)
+        self.assertTrue(contains(dct2, 'a'))
+        self.assertFalse(contains(dct2, 'b'))
+
+        self.assertRaises(TypeError, contains, {}, [])  # unhashable
+        # CRASHES contains({}, NULL)
+        # CRASHES contains(UserDict(), 'a')
+        # CRASHES contains(42, 'a')
+        # CRASHES contains(NULL, 'a')
+
+    def test_dict_contains_string(self):
+        contains_string = _testcapi.dict_containsstring
+        dct = {'a': 1, '\U0001f40d': 2}
+        self.assertTrue(contains_string(dct, b'a'))
+        self.assertFalse(contains_string(dct, b'b'))
+        self.assertTrue(contains_string(dct, '\U0001f40d'.encode()))
+        self.assertRaises(UnicodeDecodeError, contains_string, dct, INVALID_UTF8)
+
+        dct2 = DictSubclass(dct)
+        self.assertTrue(contains_string(dct2, b'a'))
+        self.assertFalse(contains_string(dct2, b'b'))
+
+        # CRASHES contains({}, NULL)
+        # CRASHES contains(NULL, b'a')
+
+    def test_dict_setitem(self):
+        setitem = _testcapi.dict_setitem
+        dct = {}
+        setitem(dct, 'a', 5)
+        self.assertEqual(dct, {'a': 5})
+        setitem(dct, '\U0001f40d', 8)
+        self.assertEqual(dct, {'a': 5, '\U0001f40d': 8})
+
+        dct2 = DictSubclass()
+        setitem(dct2, 'a', 5)
+        self.assertEqual(dct2, {'a': 5})
+
+        self.assertRaises(TypeError, setitem, {}, [], 5)  # unhashable
+        self.assertRaises(SystemError, setitem, UserDict(), 'a', 5)
+        self.assertRaises(SystemError, setitem, [1], 0, 5)
+        self.assertRaises(SystemError, setitem, 42, 'a', 5)
+        # CRASHES setitem({}, NULL, 5)
+        # CRASHES setitem({}, 'a', NULL)
+        # CRASHES setitem(NULL, 'a', 5)
+
+    def test_dict_setitemstring(self):
+        setitemstring = _testcapi.dict_setitemstring
+        dct = {}
+        setitemstring(dct, b'a', 5)
+        self.assertEqual(dct, {'a': 5})
+        setitemstring(dct, '\U0001f40d'.encode(), 8)
+        self.assertEqual(dct, {'a': 5, '\U0001f40d': 8})
+
+        dct2 = DictSubclass()
+        setitemstring(dct2, b'a', 5)
+        self.assertEqual(dct2, {'a': 5})
+
+        self.assertRaises(UnicodeDecodeError, setitemstring, {}, INVALID_UTF8, 5)
+        self.assertRaises(SystemError, setitemstring, UserDict(), b'a', 5)
+        self.assertRaises(SystemError, setitemstring, 42, b'a', 5)
+        # CRASHES setitemstring({}, NULL, 5)
+        # CRASHES setitemstring({}, b'a', NULL)
+        # CRASHES setitemstring(NULL, b'a', 5)
+
+    def test_dict_delitem(self):
+        delitem = _testcapi.dict_delitem
+        dct = {'a': 1, 'c': 2, '\U0001f40d': 3}
+        delitem(dct, 'a')
+        self.assertEqual(dct, {'c': 2, '\U0001f40d': 3})
+        self.assertRaises(KeyError, delitem, dct, 'b')
+        delitem(dct, '\U0001f40d')
+        self.assertEqual(dct, {'c': 2})
+
+        dct2 = DictSubclass({'a': 1, 'c': 2})
+        delitem(dct2, 'a')
+        self.assertEqual(dct2, {'c': 2})
+        self.assertRaises(KeyError, delitem, dct2, 'b')
+
+        self.assertRaises(TypeError, delitem, {}, [])  # unhashable
+        self.assertRaises(SystemError, delitem, UserDict({'a': 1}), 'a')
+        self.assertRaises(SystemError, delitem, [1], 0)
+        self.assertRaises(SystemError, delitem, 42, 'a')
+        # CRASHES delitem({}, NULL)
+        # CRASHES delitem(NULL, 'a')
+
+    def test_dict_delitemstring(self):
+        delitemstring = _testcapi.dict_delitemstring
+        dct = {'a': 1, 'c': 2, '\U0001f40d': 3}
+        delitemstring(dct, b'a')
+        self.assertEqual(dct, {'c': 2, '\U0001f40d': 3})
+        self.assertRaises(KeyError, delitemstring, dct, b'b')
+        delitemstring(dct, '\U0001f40d'.encode())
+        self.assertEqual(dct, {'c': 2})
+
+        dct2 = DictSubclass({'a': 1, 'c': 2})
+        delitemstring(dct2, b'a')
+        self.assertEqual(dct2, {'c': 2})
+        self.assertRaises(KeyError, delitemstring, dct2, b'b')
+
+        self.assertRaises(UnicodeDecodeError, delitemstring, {}, INVALID_UTF8)
+        self.assertRaises(SystemError, delitemstring, UserDict({'a': 1}), b'a')
+        self.assertRaises(SystemError, delitemstring, 42, b'a')
+        # CRASHES delitemstring({}, NULL)
+        # CRASHES delitemstring(NULL, b'a')
+
+    def test_dict_setdefault(self):
+        setdefault = _testcapi.dict_setdefault
+        dct = {}
+        self.assertEqual(setdefault(dct, 'a', 5), 5)
+        self.assertEqual(dct, {'a': 5})
+        self.assertEqual(setdefault(dct, 'a', 8), 5)
+        self.assertEqual(dct, {'a': 5})
+
+        dct2 = DictSubclass()
+        self.assertEqual(setdefault(dct2, 'a', 5), 5)
+        self.assertEqual(dct2, {'a': 5})
+        self.assertEqual(setdefault(dct2, 'a', 8), 5)
+        self.assertEqual(dct2, {'a': 5})
+
+        self.assertRaises(TypeError, setdefault, {}, [], 5)  # unhashable
+        self.assertRaises(SystemError, setdefault, UserDict(), 'a', 5)
+        self.assertRaises(SystemError, setdefault, [1], 0, 5)
+        self.assertRaises(SystemError, setdefault, 42, 'a', 5)
+        # CRASHES setdefault({}, NULL, 5)
+        # CRASHES setdefault({}, 'a', NULL)
+        # CRASHES setdefault(NULL, 'a', 5)
+
+    def test_mapping_keys_valuesitems(self):
+        class BadMapping(dict):
+            def keys(self):
+                return None
+            def values(self):
+                return None
+            def items(self):
+                return None
+        dict_obj = {'foo': 1, 'bar': 2, 'spam': 3}
+        for mapping in [dict_obj, DictSubclass(dict_obj), BadMapping(dict_obj)]:
+            self.assertListEqual(_testcapi.dict_keys(mapping),
+                                 list(dict_obj.keys()))
+            self.assertListEqual(_testcapi.dict_values(mapping),
+                                 list(dict_obj.values()))
+            self.assertListEqual(_testcapi.dict_items(mapping),
+                                 list(dict_obj.items()))
+
+    def test_dict_keys_valuesitems_bad_arg(self):
+        for mapping in UserDict(), [], object():
+            self.assertRaises(SystemError, _testcapi.dict_keys, mapping)
+            self.assertRaises(SystemError, _testcapi.dict_values, mapping)
+            self.assertRaises(SystemError, _testcapi.dict_items, mapping)
+
+    def test_dict_next(self):
+        dict_next = _testcapi.dict_next
+        self.assertIsNone(dict_next({}, 0))
+        dct = {'a': 1, 'b': 2, 'c': 3}
+        pos = 0
+        pairs = []
+        while True:
+            res = dict_next(dct, pos)
+            if res is None:
+                break
+            rc, pos, key, value = res
+            self.assertEqual(rc, 1)
+            pairs.append((key, value))
+        self.assertEqual(pairs, list(dct.items()))
+
+        # CRASHES dict_next(NULL, 0)
+
+    def test_dict_update(self):
+        update = _testcapi.dict_update
+        for cls1 in dict, DictSubclass:
+            for cls2 in dict, DictSubclass, UserDict:
+                dct = cls1({'a': 1, 'b': 2})
+                update(dct, cls2({'b': 3, 'c': 4}))
+                self.assertEqual(dct, {'a': 1, 'b': 3, 'c': 4})
+
+        self.assertRaises(AttributeError, update, {}, [])
+        self.assertRaises(AttributeError, update, {}, 42)
+        self.assertRaises(SystemError, update, UserDict(), {})
+        self.assertRaises(SystemError, update, 42, {})
+        self.assertRaises(SystemError, update, {}, NULL)
+        self.assertRaises(SystemError, update, NULL, {})
+
+    def test_dict_merge(self):
+        merge = _testcapi.dict_merge
+        for cls1 in dict, DictSubclass:
+            for cls2 in dict, DictSubclass, UserDict:
+                dct = cls1({'a': 1, 'b': 2})
+                merge(dct, cls2({'b': 3, 'c': 4}), 0)
+                self.assertEqual(dct, {'a': 1, 'b': 2, 'c': 4})
+                dct = cls1({'a': 1, 'b': 2})
+                merge(dct, cls2({'b': 3, 'c': 4}), 1)
+                self.assertEqual(dct, {'a': 1, 'b': 3, 'c': 4})
+
+        self.assertRaises(AttributeError, merge, {}, [], 0)
+        self.assertRaises(AttributeError, merge, {}, 42, 0)
+        self.assertRaises(SystemError, merge, UserDict(), {}, 0)
+        self.assertRaises(SystemError, merge, 42, {}, 0)
+        self.assertRaises(SystemError, merge, {}, NULL, 0)
+        self.assertRaises(SystemError, merge, NULL, {}, 0)
+
+    def test_dict_mergefromseq2(self):
+        mergefromseq2 = _testcapi.dict_mergefromseq2
+        for cls1 in dict, DictSubclass:
+            for cls2 in list, iter:
+                dct = cls1({'a': 1, 'b': 2})
+                mergefromseq2(dct, cls2([('b', 3), ('c', 4)]), 0)
+                self.assertEqual(dct, {'a': 1, 'b': 2, 'c': 4})
+                dct = cls1({'a': 1, 'b': 2})
+                mergefromseq2(dct, cls2([('b', 3), ('c', 4)]), 1)
+                self.assertEqual(dct, {'a': 1, 'b': 3, 'c': 4})
+
+        self.assertRaises(ValueError, mergefromseq2, {}, [(1,)], 0)
+        self.assertRaises(ValueError, mergefromseq2, {}, [(1, 2, 3)], 0)
+        self.assertRaises(TypeError, mergefromseq2, {}, [1], 0)
+        self.assertRaises(TypeError, mergefromseq2, {}, 42, 0)
+        # CRASHES mergefromseq2(UserDict(), [], 0)
+        # CRASHES mergefromseq2(42, [], 0)
+        # CRASHES mergefromseq2({}, NULL, 0)
+        # CRASHES mergefromseq2(NULL, {}, 0)
+
+    def test_dict_pop(self):
+        # Test PyDict_Pop()
+        dict_pop = _testcapi.dict_pop
+        dict_pop_null = _testcapi.dict_pop_null
+
+        # key present, get removed value
+        mydict = {"key": "value", "key2": "value2"}
+        self.assertEqual(dict_pop(mydict, "key"), (1, "value"))
+        self.assertEqual(mydict, {"key2": "value2"})
+        self.assertEqual(dict_pop(mydict, "key2"), (1, "value2"))
+        self.assertEqual(mydict, {})
+
+        # key present, ignore removed value
+        mydict = {"key": "value", "key2": "value2"}
+        self.assertEqual(dict_pop_null(mydict, "key"), 1)
+        self.assertEqual(mydict, {"key2": "value2"})
+        self.assertEqual(dict_pop_null(mydict, "key2"), 1)
+        self.assertEqual(mydict, {})
+
+        # key missing, expect removed value; empty dict has a fast path
+        self.assertEqual(dict_pop({}, "key"), (0, NULL))
+        self.assertEqual(dict_pop({"a": 1}, "key"), (0, NULL))
+
+        # key missing, ignored removed value; empty dict has a fast path
+        self.assertEqual(dict_pop_null({}, "key"), 0)
+        self.assertEqual(dict_pop_null({"a": 1}, "key"), 0)
+
+        # dict error
+        not_dict = UserDict({1: 2})
+        self.assertRaises(SystemError, dict_pop, not_dict, "key")
+        self.assertRaises(SystemError, dict_pop_null, not_dict, "key")
+
+        # key error; don't hash key if dict is empty
+        not_hashable_key = ["list"]
+        self.assertEqual(dict_pop({}, not_hashable_key), (0, NULL))
+        with self.assertRaises(TypeError):
+            dict_pop({'key': 1}, not_hashable_key)
+        dict_pop({}, NULL)  # key is not checked if dict is empty
+
+        # CRASHES dict_pop(NULL, "key")
+        # CRASHES dict_pop({"a": 1}, NULL)
+
+    def test_dict_popstring(self):
+        # Test PyDict_PopString()
+        dict_popstring = _testcapi.dict_popstring
+        dict_popstring_null = _testcapi.dict_popstring_null
+
+        # key present, get removed value
+        mydict = {"key": "value", "key2": "value2"}
+        self.assertEqual(dict_popstring(mydict, "key"), (1, "value"))
+        self.assertEqual(mydict, {"key2": "value2"})
+        self.assertEqual(dict_popstring(mydict, "key2"), (1, "value2"))
+        self.assertEqual(mydict, {})
+
+        # key present, ignore removed value
+        mydict = {"key": "value", "key2": "value2"}
+        self.assertEqual(dict_popstring_null(mydict, "key"), 1)
+        self.assertEqual(mydict, {"key2": "value2"})
+        self.assertEqual(dict_popstring_null(mydict, "key2"), 1)
+        self.assertEqual(mydict, {})
+
+        # key missing; empty dict has a fast path
+        self.assertEqual(dict_popstring({}, "key"), (0, NULL))
+        self.assertEqual(dict_popstring_null({}, "key"), 0)
+        self.assertEqual(dict_popstring({"a": 1}, "key"), (0, NULL))
+        self.assertEqual(dict_popstring_null({"a": 1}, "key"), 0)
+
+        # non-ASCII key
+        non_ascii = '\U0001f40d'
+        dct = {'\U0001f40d': 123}
+        self.assertEqual(dict_popstring(dct, '\U0001f40d'.encode()), (1, 123))
+        dct = {'\U0001f40d': 123}
+        self.assertEqual(dict_popstring_null(dct, '\U0001f40d'.encode()), 1)
+
+        # dict error
+        not_dict = UserDict({1: 2})
+        self.assertRaises(SystemError, dict_popstring, not_dict, "key")
+        self.assertRaises(SystemError, dict_popstring_null, not_dict, "key")
+
+        # key error
+        self.assertRaises(UnicodeDecodeError, dict_popstring, {1: 2}, INVALID_UTF8)
+        self.assertRaises(UnicodeDecodeError, dict_popstring_null, {1: 2}, INVALID_UTF8)
+
+        # CRASHES dict_popstring(NULL, "key")
+        # CRASHES dict_popstring({}, NULL)
+        # CRASHES dict_popstring({"a": 1}, NULL)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_exceptions.py b/Lib/test/test_capi/test_exceptions.py
index b1c1a61e20685e..1d158e3586e98d 100644
--- a/Lib/test/test_capi/test_exceptions.py
+++ b/Lib/test/test_capi/test_exceptions.py
@@ -1,16 +1,26 @@
+import errno
+import os
 import re
 import sys
 import unittest
 
 from test import support
 from test.support import import_helper
+from test.support.os_helper import TESTFN, TESTFN_UNDECODABLE
 from test.support.script_helper import assert_python_failure
+from test.support.testcase import ExceptionIsLikeMixin
 
 from .test_misc import decode_stderr
 
 # Skip this test if the _testcapi module isn't available.
 _testcapi = import_helper.import_module('_testcapi')
 
+NULL = None
+
+class CustomError(Exception):
+    pass
+
+
 class Test_Exceptions(unittest.TestCase):
 
     def test_exception(self):
@@ -66,7 +76,7 @@ def check_fatal_error(self, code, expected, not_expected=()):
             rc, out, err = assert_python_failure('-sSI', '-c', code)
 
         err = decode_stderr(err)
-        self.assertIn('Fatal Python error: test_fatal_error: MESSAGE\n',
+        self.assertIn('Fatal Python error: _testcapi_fatal_error_impl: MESSAGE\n',
                       err)
 
         match = re.search(r'^Extension modules:(.*) \(total: ([0-9]+)\)$',
@@ -188,6 +198,272 @@ def __repr__(self):
         self.assertEqual(exc.__notes__[0],
                          'Normalization failed: type=Broken args=<unknown>')
 
+    def test_set_string(self):
+        """Test PyErr_SetString()"""
+        setstring = _testcapi.err_setstring
+        with self.assertRaises(ZeroDivisionError) as e:
+            setstring(ZeroDivisionError, b'error')
+        self.assertEqual(e.exception.args, ('error',))
+        with self.assertRaises(ZeroDivisionError) as e:
+            setstring(ZeroDivisionError, 'помилка'.encode())
+        self.assertEqual(e.exception.args, ('помилка',))
+
+        with self.assertRaises(UnicodeDecodeError):
+            setstring(ZeroDivisionError, b'\xff')
+        self.assertRaises(SystemError, setstring, list, b'error')
+        # CRASHES setstring(ZeroDivisionError, NULL)
+        # CRASHES setstring(NULL, b'error')
+
+    def test_format(self):
+        """Test PyErr_Format()"""
+        import_helper.import_module('ctypes')
+        from ctypes import pythonapi, py_object, c_char_p, c_int
+        name = "PyErr_Format"
+        PyErr_Format = getattr(pythonapi, name)
+        PyErr_Format.argtypes = (py_object, c_char_p,)
+        PyErr_Format.restype = py_object
+        with self.assertRaises(ZeroDivisionError) as e:
+            PyErr_Format(ZeroDivisionError, b'%s %d', b'error', c_int(42))
+        self.assertEqual(e.exception.args, ('error 42',))
+        with self.assertRaises(ZeroDivisionError) as e:
+            PyErr_Format(ZeroDivisionError, b'%s', 'помилка'.encode())
+        self.assertEqual(e.exception.args, ('помилка',))
+
+        with self.assertRaisesRegex(OverflowError, 'not in range'):
+            PyErr_Format(ZeroDivisionError, b'%c', c_int(-1))
+        with self.assertRaisesRegex(ValueError, 'format string'):
+            PyErr_Format(ZeroDivisionError, b'\xff')
+        self.assertRaises(SystemError, PyErr_Format, list, b'error')
+        # CRASHES PyErr_Format(ZeroDivisionError, NULL)
+        # CRASHES PyErr_Format(py_object(), b'error')
+
+    def test_setfromerrnowithfilename(self):
+        """Test PyErr_SetFromErrnoWithFilename()"""
+        setfromerrnowithfilename = _testcapi.err_setfromerrnowithfilename
+        ENOENT = errno.ENOENT
+        with self.assertRaises(FileNotFoundError) as e:
+            setfromerrnowithfilename(ENOENT, OSError, b'file')
+        self.assertEqual(e.exception.args,
+                         (ENOENT, 'No such file or directory'))
+        self.assertEqual(e.exception.errno, ENOENT)
+        self.assertEqual(e.exception.filename, 'file')
+
+        with self.assertRaises(FileNotFoundError) as e:
+            setfromerrnowithfilename(ENOENT, OSError, os.fsencode(TESTFN))
+        self.assertEqual(e.exception.filename, TESTFN)
+
+        if TESTFN_UNDECODABLE:
+            with self.assertRaises(FileNotFoundError) as e:
+                setfromerrnowithfilename(ENOENT, OSError, TESTFN_UNDECODABLE)
+            self.assertEqual(e.exception.filename,
+                             os.fsdecode(TESTFN_UNDECODABLE))
+
+        with self.assertRaises(FileNotFoundError) as e:
+            setfromerrnowithfilename(ENOENT, OSError, NULL)
+        self.assertIsNone(e.exception.filename)
+
+        with self.assertRaises(OSError) as e:
+            setfromerrnowithfilename(0, OSError, b'file')
+        self.assertEqual(e.exception.args, (0, 'Error'))
+        self.assertEqual(e.exception.errno, 0)
+        self.assertEqual(e.exception.filename, 'file')
+
+        with self.assertRaises(ZeroDivisionError) as e:
+            setfromerrnowithfilename(ENOENT, ZeroDivisionError, b'file')
+        self.assertEqual(e.exception.args,
+                         (ENOENT, 'No such file or directory', 'file'))
+        # CRASHES setfromerrnowithfilename(ENOENT, NULL, b'error')
+
+    def test_err_writeunraisable(self):
+        # Test PyErr_WriteUnraisable()
+        writeunraisable = _testcapi.err_writeunraisable
+        firstline = self.test_err_writeunraisable.__code__.co_firstlineno
+
+        with support.catch_unraisable_exception() as cm:
+            writeunraisable(CustomError('oops!'), hex)
+            self.assertEqual(cm.unraisable.exc_type, CustomError)
+            self.assertEqual(str(cm.unraisable.exc_value), 'oops!')
+            self.assertEqual(cm.unraisable.exc_traceback.tb_lineno,
+                             firstline + 6)
+            self.assertIsNone(cm.unraisable.err_msg)
+            self.assertEqual(cm.unraisable.object, hex)
+
+        with support.catch_unraisable_exception() as cm:
+            writeunraisable(CustomError('oops!'), NULL)
+            self.assertEqual(cm.unraisable.exc_type, CustomError)
+            self.assertEqual(str(cm.unraisable.exc_value), 'oops!')
+            self.assertEqual(cm.unraisable.exc_traceback.tb_lineno,
+                             firstline + 15)
+            self.assertIsNone(cm.unraisable.err_msg)
+            self.assertIsNone(cm.unraisable.object)
+
+        with (support.swap_attr(sys, 'unraisablehook', None),
+              support.captured_stderr() as stderr):
+            writeunraisable(CustomError('oops!'), hex)
+        lines = stderr.getvalue().splitlines()
+        self.assertEqual(lines[0], f'Exception ignored in: {hex!r}')
+        self.assertEqual(lines[1], 'Traceback (most recent call last):')
+        self.assertEqual(lines[-1], f'{__name__}.CustomError: oops!')
+
+        with (support.swap_attr(sys, 'unraisablehook', None),
+              support.captured_stderr() as stderr):
+            writeunraisable(CustomError('oops!'), NULL)
+        lines = stderr.getvalue().splitlines()
+        self.assertEqual(lines[0], 'Traceback (most recent call last):')
+        self.assertEqual(lines[-1], f'{__name__}.CustomError: oops!')
+
+        # CRASHES writeunraisable(NULL, hex)
+        # CRASHES writeunraisable(NULL, NULL)
+
+    def test_err_formatunraisable(self):
+        # Test PyErr_FormatUnraisable()
+        formatunraisable = _testcapi.err_formatunraisable
+        firstline = self.test_err_formatunraisable.__code__.co_firstlineno
+
+        with support.catch_unraisable_exception() as cm:
+            formatunraisable(CustomError('oops!'), b'Error in %R', [])
+            self.assertEqual(cm.unraisable.exc_type, CustomError)
+            self.assertEqual(str(cm.unraisable.exc_value), 'oops!')
+            self.assertEqual(cm.unraisable.exc_traceback.tb_lineno,
+                             firstline + 6)
+            self.assertEqual(cm.unraisable.err_msg, 'Error in []')
+            self.assertIsNone(cm.unraisable.object)
+
+        with support.catch_unraisable_exception() as cm:
+            formatunraisable(CustomError('oops!'), b'undecodable \xff')
+            self.assertEqual(cm.unraisable.exc_type, CustomError)
+            self.assertEqual(str(cm.unraisable.exc_value), 'oops!')
+            self.assertEqual(cm.unraisable.exc_traceback.tb_lineno,
+                             firstline + 15)
+            self.assertIsNone(cm.unraisable.err_msg)
+            self.assertIsNone(cm.unraisable.object)
+
+        with support.catch_unraisable_exception() as cm:
+            formatunraisable(CustomError('oops!'), NULL)
+            self.assertEqual(cm.unraisable.exc_type, CustomError)
+            self.assertEqual(str(cm.unraisable.exc_value), 'oops!')
+            self.assertEqual(cm.unraisable.exc_traceback.tb_lineno,
+                             firstline + 24)
+            self.assertIsNone(cm.unraisable.err_msg)
+            self.assertIsNone(cm.unraisable.object)
+
+        with (support.swap_attr(sys, 'unraisablehook', None),
+              support.captured_stderr() as stderr):
+            formatunraisable(CustomError('oops!'), b'Error in %R', [])
+        lines = stderr.getvalue().splitlines()
+        self.assertEqual(lines[0], f'Error in []:')
+        self.assertEqual(lines[1], 'Traceback (most recent call last):')
+        self.assertEqual(lines[-1], f'{__name__}.CustomError: oops!')
+
+        with (support.swap_attr(sys, 'unraisablehook', None),
+              support.captured_stderr() as stderr):
+            formatunraisable(CustomError('oops!'), b'undecodable \xff')
+        lines = stderr.getvalue().splitlines()
+        self.assertEqual(lines[0], 'Traceback (most recent call last):')
+        self.assertEqual(lines[-1], f'{__name__}.CustomError: oops!')
+
+        with (support.swap_attr(sys, 'unraisablehook', None),
+              support.captured_stderr() as stderr):
+            formatunraisable(CustomError('oops!'), NULL)
+        lines = stderr.getvalue().splitlines()
+        self.assertEqual(lines[0], 'Traceback (most recent call last):')
+        self.assertEqual(lines[-1], f'{__name__}.CustomError: oops!')
+
+        # CRASHES formatunraisable(NULL, b'Error in %R', [])
+        # CRASHES formatunraisable(NULL, NULL)
+
+
+class Test_PyUnstable_Exc_PrepReraiseStar(ExceptionIsLikeMixin, unittest.TestCase):
+
+    def setUp(self):
+        super().setUp()
+        try:
+            raise ExceptionGroup("eg", [TypeError('bad type'), ValueError(42)])
+        except ExceptionGroup as e:
+            self.orig = e
+
+    def test_invalid_args(self):
+        with self.assertRaisesRegex(TypeError, "orig must be an exception"):
+            _testcapi.unstable_exc_prep_reraise_star(42, [None])
+
+        with self.assertRaisesRegex(TypeError, "excs must be a list"):
+            _testcapi.unstable_exc_prep_reraise_star(self.orig, 42)
+
+        with self.assertRaisesRegex(TypeError, "not an exception"):
+            _testcapi.unstable_exc_prep_reraise_star(self.orig, [TypeError(42), 42])
+
+        with self.assertRaisesRegex(ValueError, "orig must be a raised exception"):
+            _testcapi.unstable_exc_prep_reraise_star(ValueError(42), [TypeError(42)])
+
+        with self.assertRaisesRegex(ValueError, "orig must be a raised exception"):
+            _testcapi.unstable_exc_prep_reraise_star(ExceptionGroup("eg", [ValueError(42)]),
+                                                     [TypeError(42)])
+
+
+    def test_nothing_to_reraise(self):
+        self.assertEqual(
+            _testcapi.unstable_exc_prep_reraise_star(self.orig, [None]), None)
+
+        try:
+            raise ValueError(42)
+        except ValueError as e:
+            orig = e
+        self.assertEqual(
+            _testcapi.unstable_exc_prep_reraise_star(orig, [None]), None)
+
+    def test_reraise_orig(self):
+        orig = self.orig
+        res = _testcapi.unstable_exc_prep_reraise_star(orig, [orig])
+        self.assertExceptionIsLike(res, orig)
+
+    def test_raise_orig_parts(self):
+        orig = self.orig
+        match, rest = orig.split(TypeError)
+
+        test_cases = [
+            ([match, rest], orig),
+            ([rest, match], orig),
+            ([match], match),
+            ([rest], rest),
+            ([], None),
+        ]
+
+        for input, expected in test_cases:
+            with self.subTest(input=input):
+                res = _testcapi.unstable_exc_prep_reraise_star(orig, input)
+                self.assertExceptionIsLike(res, expected)
+
+
+    def test_raise_with_new_exceptions(self):
+        orig = self.orig
+
+        match, rest = orig.split(TypeError)
+        new1 = OSError('bad file')
+        new2 = RuntimeError('bad runtime')
+
+        test_cases = [
+            ([new1, match, rest], ExceptionGroup("", [new1, orig])),
+            ([match, new1, rest], ExceptionGroup("", [new1, orig])),
+            ([match, rest, new1], ExceptionGroup("", [new1, orig])),
+
+            ([new1, new2, match, rest], ExceptionGroup("", [new1, new2, orig])),
+            ([new1, match, new2, rest], ExceptionGroup("", [new1, new2, orig])),
+            ([new2, rest, match, new1], ExceptionGroup("", [new2, new1, orig])),
+            ([rest, new2, match, new1], ExceptionGroup("", [new2, new1, orig])),
+
+
+            ([new1, new2, rest], ExceptionGroup("", [new1, new2, rest])),
+            ([new1, match, new2], ExceptionGroup("", [new1, new2, match])),
+            ([rest, new2, new1], ExceptionGroup("", [new2, new1, rest])),
+            ([new1, new2], ExceptionGroup("", [new1, new2])),
+            ([new2, new1], ExceptionGroup("", [new2, new1])),
+        ]
+
+        for (input, expected) in test_cases:
+            with self.subTest(input=input):
+                res = _testcapi.unstable_exc_prep_reraise_star(orig, input)
+                self.assertExceptionIsLike(res, expected)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_capi/test_float.py b/Lib/test/test_capi/test_float.py
new file mode 100644
index 00000000000000..cb94d562645916
--- /dev/null
+++ b/Lib/test/test_capi/test_float.py
@@ -0,0 +1,182 @@
+import math
+import sys
+import unittest
+import warnings
+
+from test.test_capi.test_getargs import (Float, FloatSubclass, FloatSubclass2,
+                                         BadIndex2, BadFloat2, Index, BadIndex,
+                                         BadFloat)
+from test.support import import_helper
+
+_testcapi = import_helper.import_module('_testcapi')
+
+NULL = None
+
+# For PyFloat_Pack/Unpack*
+BIG_ENDIAN = 0
+LITTLE_ENDIAN = 1
+EPSILON = {
+    2: 2.0 ** -11,  # binary16
+    4: 2.0 ** -24,  # binary32
+    8: 2.0 ** -53,  # binary64
+}
+
+HAVE_IEEE_754 = float.__getformat__("double").startswith("IEEE")
+INF = float("inf")
+NAN = float("nan")
+
+
+class CAPIFloatTest(unittest.TestCase):
+    def test_check(self):
+        # Test PyFloat_Check()
+        check = _testcapi.float_check
+
+        self.assertTrue(check(4.25))
+        self.assertTrue(check(FloatSubclass(4.25)))
+        self.assertFalse(check(Float()))
+        self.assertFalse(check(3))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_checkexact(self):
+        # Test PyFloat_CheckExact()
+        checkexact = _testcapi.float_checkexact
+
+        self.assertTrue(checkexact(4.25))
+        self.assertFalse(checkexact(FloatSubclass(4.25)))
+        self.assertFalse(checkexact(Float()))
+        self.assertFalse(checkexact(3))
+        self.assertFalse(checkexact(object()))
+
+        # CRASHES checkexact(NULL)
+
+    def test_fromstring(self):
+        # Test PyFloat_FromString()
+        fromstring = _testcapi.float_fromstring
+
+        self.assertEqual(fromstring("4.25"), 4.25)
+        self.assertEqual(fromstring(b"4.25"), 4.25)
+        self.assertRaises(ValueError, fromstring, "4.25\0")
+        self.assertRaises(ValueError, fromstring, b"4.25\0")
+
+        self.assertEqual(fromstring(bytearray(b"4.25")), 4.25)
+
+        self.assertEqual(fromstring(memoryview(b"4.25")), 4.25)
+        self.assertEqual(fromstring(memoryview(b"4.255")[:-1]), 4.25)
+        self.assertRaises(TypeError, fromstring, memoryview(b"4.25")[::2])
+
+        self.assertRaises(TypeError, fromstring, 4.25)
+
+        # CRASHES fromstring(NULL)
+
+    def test_fromdouble(self):
+        # Test PyFloat_FromDouble()
+        fromdouble = _testcapi.float_fromdouble
+
+        self.assertEqual(fromdouble(4.25), 4.25)
+
+    def test_asdouble(self):
+        # Test PyFloat_AsDouble()
+        asdouble = _testcapi.float_asdouble
+
+        class BadFloat3:
+            def __float__(self):
+                raise RuntimeError
+
+        self.assertEqual(asdouble(4.25), 4.25)
+        self.assertEqual(asdouble(-1.0), -1.0)
+        self.assertEqual(asdouble(42), 42.0)
+        self.assertEqual(asdouble(-1), -1.0)
+        self.assertEqual(asdouble(2**1000), float(2**1000))
+
+        self.assertEqual(asdouble(FloatSubclass(4.25)), 4.25)
+        self.assertEqual(asdouble(FloatSubclass2(4.25)), 4.25)
+        self.assertEqual(asdouble(Index()), 99.)
+
+        self.assertRaises(TypeError, asdouble, BadIndex())
+        self.assertRaises(TypeError, asdouble, BadFloat())
+        self.assertRaises(RuntimeError, asdouble, BadFloat3())
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(asdouble(BadIndex2()), 1.)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(asdouble(BadFloat2()), 4.25)
+        with warnings.catch_warnings():
+            warnings.simplefilter("error", DeprecationWarning)
+            self.assertRaises(DeprecationWarning, asdouble, BadFloat2())
+        self.assertRaises(TypeError, asdouble, object())
+        self.assertRaises(TypeError, asdouble, NULL)
+
+    def test_getinfo(self):
+        # Test PyFloat_GetInfo()
+        getinfo = _testcapi.float_getinfo
+
+        self.assertEqual(getinfo(), sys.float_info)
+
+    def test_getmax(self):
+        # Test PyFloat_GetMax()
+        getmax = _testcapi.float_getmax
+
+        self.assertEqual(getmax(), sys.float_info.max)
+
+    def test_getmin(self):
+        # Test PyFloat_GetMax()
+        getmin = _testcapi.float_getmin
+
+        self.assertEqual(getmin(), sys.float_info.min)
+
+    def test_pack(self):
+        # Test PyFloat_Pack2(), PyFloat_Pack4() and PyFloat_Pack8()
+        pack = _testcapi.float_pack
+
+        self.assertEqual(pack(2, 1.5, BIG_ENDIAN), b'>\x00')
+        self.assertEqual(pack(4, 1.5, BIG_ENDIAN), b'?\xc0\x00\x00')
+        self.assertEqual(pack(8, 1.5, BIG_ENDIAN),
+                         b'?\xf8\x00\x00\x00\x00\x00\x00')
+        self.assertEqual(pack(2, 1.5, LITTLE_ENDIAN), b'\x00>')
+        self.assertEqual(pack(4, 1.5, LITTLE_ENDIAN), b'\x00\x00\xc0?')
+        self.assertEqual(pack(8, 1.5, LITTLE_ENDIAN),
+                         b'\x00\x00\x00\x00\x00\x00\xf8?')
+
+    def test_unpack(self):
+        # Test PyFloat_Unpack2(), PyFloat_Unpack4() and PyFloat_Unpack8()
+        unpack = _testcapi.float_unpack
+
+        self.assertEqual(unpack(b'>\x00', BIG_ENDIAN), 1.5)
+        self.assertEqual(unpack(b'?\xc0\x00\x00', BIG_ENDIAN), 1.5)
+        self.assertEqual(unpack(b'?\xf8\x00\x00\x00\x00\x00\x00', BIG_ENDIAN),
+                         1.5)
+        self.assertEqual(unpack(b'\x00>', LITTLE_ENDIAN), 1.5)
+        self.assertEqual(unpack(b'\x00\x00\xc0?', LITTLE_ENDIAN), 1.5)
+        self.assertEqual(unpack(b'\x00\x00\x00\x00\x00\x00\xf8?', LITTLE_ENDIAN),
+                         1.5)
+
+    def test_pack_unpack_roundtrip(self):
+        pack = _testcapi.float_pack
+        unpack = _testcapi.float_unpack
+
+        large = 2.0 ** 100
+        values = [1.0, 1.5, large, 1.0/7, math.pi]
+        if HAVE_IEEE_754:
+            values.extend((INF, NAN))
+        for value in values:
+            for size in (2, 4, 8,):
+                if size == 2 and value == large:
+                    # too large for 16-bit float
+                    continue
+                rel_tol = EPSILON[size]
+                for endian in (BIG_ENDIAN, LITTLE_ENDIAN):
+                    with self.subTest(value=value, size=size, endian=endian):
+                        data = pack(size, value, endian)
+                        value2 = unpack(data, endian)
+                        if math.isnan(value):
+                            self.assertTrue(math.isnan(value2), (value, value2))
+                        elif size < 8:
+                            self.assertTrue(math.isclose(value2, value, rel_tol=rel_tol),
+                                            (value, value2))
+                        else:
+                            self.assertEqual(value2, value)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_getargs.py b/Lib/test/test_capi/test_getargs.py
index 3792d1a6515b44..9b6aef27625ad0 100644
--- a/Lib/test/test_capi/test_getargs.py
+++ b/Lib/test/test_capi/test_getargs.py
@@ -55,6 +55,8 @@
 LLONG_MIN = -2**63
 ULLONG_MAX = 2**64-1
 
+NULL = None
+
 class Index:
     def __index__(self):
         return 99
@@ -151,6 +153,8 @@ class TupleSubclass(tuple):
 class DictSubclass(dict):
     pass
 
+NONCONTIG_WRITABLE = memoryview(bytearray(b'noncontig'))[::-2]
+NONCONTIG_READONLY = memoryview(b'noncontig')[::-2]
 
 class Unsigned_TestCase(unittest.TestCase):
     def test_b(self):
@@ -835,6 +839,8 @@ def test_y_star(self):
         self.assertEqual(getargs_y_star(bytearray(b'bytearray')), b'bytearray')
         self.assertEqual(getargs_y_star(memoryview(b'memoryview')), b'memoryview')
         self.assertRaises(TypeError, getargs_y_star, None)
+        self.assertRaises(BufferError, getargs_y_star, NONCONTIG_WRITABLE)
+        self.assertRaises(BufferError, getargs_y_star, NONCONTIG_READONLY)
 
     def test_y_hash(self):
         from _testcapi import getargs_y_hash
@@ -844,6 +850,9 @@ def test_y_hash(self):
         self.assertRaises(TypeError, getargs_y_hash, bytearray(b'bytearray'))
         self.assertRaises(TypeError, getargs_y_hash, memoryview(b'memoryview'))
         self.assertRaises(TypeError, getargs_y_hash, None)
+        # TypeError: must be read-only bytes-like object, not memoryview
+        self.assertRaises(TypeError, getargs_y_hash, NONCONTIG_WRITABLE)
+        self.assertRaises(TypeError, getargs_y_hash, NONCONTIG_READONLY)
 
     def test_w_star(self):
         # getargs_w_star() modifies first and last byte
@@ -859,6 +868,17 @@ def test_w_star(self):
         self.assertEqual(getargs_w_star(memoryview(buf)), b'[emoryvie]')
         self.assertEqual(buf, bytearray(b'[emoryvie]'))
         self.assertRaises(TypeError, getargs_w_star, None)
+        self.assertRaises(TypeError, getargs_w_star, NONCONTIG_WRITABLE)
+        self.assertRaises(TypeError, getargs_w_star, NONCONTIG_READONLY)
+
+    def test_getargs_empty(self):
+        from _testcapi import getargs_empty
+        self.assertTrue(getargs_empty())
+        self.assertRaises(TypeError, getargs_empty, 1)
+        self.assertRaises(TypeError, getargs_empty, 1, 2, 3)
+        self.assertRaises(TypeError, getargs_empty, a=1)
+        self.assertRaises(TypeError, getargs_empty, a=1, b=2)
+        self.assertRaises(TypeError, getargs_empty, 'x', 'y', 'z', a=1, b=2)
 
 
 class String_TestCase(unittest.TestCase):
@@ -891,6 +911,8 @@ def test_s_star(self):
         self.assertEqual(getargs_s_star(bytearray(b'bytearray')), b'bytearray')
         self.assertEqual(getargs_s_star(memoryview(b'memoryview')), b'memoryview')
         self.assertRaises(TypeError, getargs_s_star, None)
+        self.assertRaises(BufferError, getargs_s_star, NONCONTIG_WRITABLE)
+        self.assertRaises(BufferError, getargs_s_star, NONCONTIG_READONLY)
 
     def test_s_hash(self):
         from _testcapi import getargs_s_hash
@@ -900,23 +922,9 @@ def test_s_hash(self):
         self.assertRaises(TypeError, getargs_s_hash, bytearray(b'bytearray'))
         self.assertRaises(TypeError, getargs_s_hash, memoryview(b'memoryview'))
         self.assertRaises(TypeError, getargs_s_hash, None)
-
-    def test_s_hash_int(self):
-        # "s#" without PY_SSIZE_T_CLEAN defined.
-        from _testcapi import getargs_s_hash_int
-        from _testcapi import getargs_s_hash_int2
-        buf = bytearray([1, 2])
-        self.assertRaises(SystemError, getargs_s_hash_int, buf, "abc")
-        self.assertRaises(SystemError, getargs_s_hash_int, buf, x=42)
-        self.assertRaises(SystemError, getargs_s_hash_int, buf, x="abc")
-        self.assertRaises(SystemError, getargs_s_hash_int2, buf, ("abc",))
-        self.assertRaises(SystemError, getargs_s_hash_int2, buf, x=42)
-        self.assertRaises(SystemError, getargs_s_hash_int2, buf, x="abc")
-        buf.append(3)  # still mutable -- not locked by a buffer export
-        # getargs_s_hash_int(buf) may not raise SystemError because skipitem()
-        # is not called. But it is an implementation detail.
-        # getargs_s_hash_int(buf)
-        # getargs_s_hash_int2(buf)
+        # TypeError: must be read-only bytes-like object, not memoryview
+        self.assertRaises(TypeError, getargs_s_hash, NONCONTIG_WRITABLE)
+        self.assertRaises(TypeError, getargs_s_hash, NONCONTIG_READONLY)
 
     def test_z(self):
         from _testcapi import getargs_z
@@ -935,6 +943,8 @@ def test_z_star(self):
         self.assertEqual(getargs_z_star(bytearray(b'bytearray')), b'bytearray')
         self.assertEqual(getargs_z_star(memoryview(b'memoryview')), b'memoryview')
         self.assertIsNone(getargs_z_star(None))
+        self.assertRaises(BufferError, getargs_z_star, NONCONTIG_WRITABLE)
+        self.assertRaises(BufferError, getargs_z_star, NONCONTIG_READONLY)
 
     def test_z_hash(self):
         from _testcapi import getargs_z_hash
@@ -944,6 +954,9 @@ def test_z_hash(self):
         self.assertRaises(TypeError, getargs_z_hash, bytearray(b'bytearray'))
         self.assertRaises(TypeError, getargs_z_hash, memoryview(b'memoryview'))
         self.assertIsNone(getargs_z_hash(None))
+        # TypeError: must be read-only bytes-like object, not memoryview
+        self.assertRaises(TypeError, getargs_z_hash, NONCONTIG_WRITABLE)
+        self.assertRaises(TypeError, getargs_z_hash, NONCONTIG_READONLY)
 
     def test_es(self):
         from _testcapi import getargs_es
@@ -1021,70 +1034,6 @@ def test_et_hash(self):
         buf = bytearray()
         self.assertRaises(ValueError, getargs_et_hash, 'abc\xe9', 'latin1', buf)
 
-    @support.requires_legacy_unicode_capi
-    def test_u(self):
-        from _testcapi import getargs_u
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(getargs_u('abc\xe9'), 'abc\xe9')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(ValueError, getargs_u, 'nul:\0')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u, b'bytes')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u, bytearray(b'bytearray'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u, memoryview(b'memoryview'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u, None)
-
-    @support.requires_legacy_unicode_capi
-    def test_u_hash(self):
-        from _testcapi import getargs_u_hash
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(getargs_u_hash('abc\xe9'), 'abc\xe9')
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(getargs_u_hash('nul:\0'), 'nul:\0')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u_hash, b'bytes')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u_hash, bytearray(b'bytearray'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u_hash, memoryview(b'memoryview'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_u_hash, None)
-
-    @support.requires_legacy_unicode_capi
-    def test_Z(self):
-        from _testcapi import getargs_Z
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(getargs_Z('abc\xe9'), 'abc\xe9')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(ValueError, getargs_Z, 'nul:\0')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_Z, b'bytes')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_Z, bytearray(b'bytearray'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_Z, memoryview(b'memoryview'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(getargs_Z(None))
-
-    @support.requires_legacy_unicode_capi
-    def test_Z_hash(self):
-        from _testcapi import getargs_Z_hash
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(getargs_Z_hash('abc\xe9'), 'abc\xe9')
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(getargs_Z_hash('nul:\0'), 'nul:\0')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_Z_hash, b'bytes')
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_Z_hash, bytearray(b'bytearray'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertRaises(TypeError, getargs_Z_hash, memoryview(b'memoryview'))
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(getargs_Z_hash(None))
-
     def test_gh_99240_clear_args(self):
         from _testcapi import gh_99240_clear_args
         self.assertRaises(TypeError, gh_99240_clear_args, 'a', '\0b')
@@ -1241,6 +1190,27 @@ def test_parse_tuple_and_keywords(self):
         self.assertRaises(ValueError, _testcapi.parse_tuple_and_keywords,
                           (), {}, '', [42])
 
+    def test_basic(self):
+        parse = _testcapi.parse_tuple_and_keywords
+
+        self.assertEqual(parse((), {'a': 1}, 'O', ['a']), (1,))
+        self.assertEqual(parse((), {}, '|O', ['a']), (NULL,))
+        self.assertEqual(parse((1, 2), {}, 'OO', ['a', 'b']), (1, 2))
+        self.assertEqual(parse((1,), {'b': 2}, 'OO', ['a', 'b']), (1, 2))
+        self.assertEqual(parse((), {'a': 1, 'b': 2}, 'OO', ['a', 'b']), (1, 2))
+        self.assertEqual(parse((), {'b': 2}, '|OO', ['a', 'b']), (NULL, 2))
+
+        with self.assertRaisesRegex(TypeError,
+                "function missing required argument 'a'"):
+            parse((), {}, 'O', ['a'])
+        with self.assertRaisesRegex(TypeError,
+                "'b' is an invalid keyword argument"):
+            parse((), {'b': 1}, '|O', ['a'])
+        with self.assertRaisesRegex(TypeError,
+                fr"argument for function given by name \('a'\) "
+                fr"and position \(1\)"):
+            parse((1,), {'a': 2}, 'O|O', ['a', 'b'])
+
     def test_bad_use(self):
         # Test handling invalid format and keywords in
         # PyArg_ParseTupleAndKeywords()
@@ -1268,20 +1238,23 @@ def test_bad_use(self):
     def test_positional_only(self):
         parse = _testcapi.parse_tuple_and_keywords
 
-        parse((1, 2, 3), {}, 'OOO', ['', '', 'a'])
-        parse((1, 2), {'a': 3}, 'OOO', ['', '', 'a'])
+        self.assertEqual(parse((1, 2, 3), {}, 'OOO', ['', '', 'a']), (1, 2, 3))
+        self.assertEqual(parse((1, 2), {'a': 3}, 'OOO', ['', '', 'a']), (1, 2, 3))
         with self.assertRaisesRegex(TypeError,
                r'function takes at least 2 positional arguments \(1 given\)'):
             parse((1,), {'a': 3}, 'OOO', ['', '', 'a'])
-        parse((1,), {}, 'O|OO', ['', '', 'a'])
+        self.assertEqual(parse((1,), {}, 'O|OO', ['', '', 'a']),
+                         (1, NULL, NULL))
         with self.assertRaisesRegex(TypeError,
                r'function takes at least 1 positional argument \(0 given\)'):
             parse((), {}, 'O|OO', ['', '', 'a'])
-        parse((1, 2), {'a': 3}, 'OO$O', ['', '', 'a'])
+        self.assertEqual(parse((1, 2), {'a': 3}, 'OO$O', ['', '', 'a']),
+                         (1, 2, 3))
         with self.assertRaisesRegex(TypeError,
                r'function takes exactly 2 positional arguments \(1 given\)'):
             parse((1,), {'a': 3}, 'OO$O', ['', '', 'a'])
-        parse((1,), {}, 'O|O$O', ['', '', 'a'])
+        self.assertEqual(parse((1,), {}, 'O|O$O', ['', '', 'a']),
+                         (1, NULL, NULL))
         with self.assertRaisesRegex(TypeError,
                r'function takes at least 1 positional argument \(0 given\)'):
             parse((), {}, 'O|O$O', ['', '', 'a'])
@@ -1290,11 +1263,84 @@ def test_positional_only(self):
         with self.assertRaisesRegex(SystemError, 'Empty keyword'):
             parse((1,), {}, 'O|OO', ['', 'a', ''])
 
+    def test_nonascii_keywords(self):
+        parse = _testcapi.parse_tuple_and_keywords
+
+        for name in ('a', 'ä', 'ŷ', '㷷', '�'):
+            with self.subTest(name=name):
+                self.assertEqual(parse((), {name: 1}, 'O', [name]), (1,))
+                self.assertEqual(parse((), {}, '|O', [name]), (NULL,))
+                with self.assertRaisesRegex(TypeError,
+                        f"function missing required argument '{name}'"):
+                    parse((), {}, 'O', [name])
+                with self.assertRaisesRegex(TypeError,
+                        fr"argument for function given by name \('{name}'\) "
+                        fr"and position \(1\)"):
+                    parse((1,), {name: 2}, 'O|O', [name, 'b'])
+                with self.assertRaisesRegex(TypeError,
+                        f"'{name}' is an invalid keyword argument"):
+                    parse((), {name: 1}, '|O', ['b'])
+                with self.assertRaisesRegex(TypeError,
+                        "'b' is an invalid keyword argument"):
+                    parse((), {'b': 1}, '|O', [name])
+
+                invalid = name.encode() + (name.encode()[:-1] or b'\x80')
+                self.assertEqual(parse((), {}, '|O', [invalid]), (NULL,))
+                self.assertEqual(parse((1,), {'b': 2}, 'O|O', [invalid, 'b']),
+                                    (1, 2))
+                with self.assertRaisesRegex(TypeError,
+                        f"function missing required argument '{name}\ufffd'"):
+                    parse((), {}, 'O', [invalid])
+                with self.assertRaisesRegex(UnicodeDecodeError,
+                        f"'utf-8' codec can't decode bytes? "):
+                    parse((), {'b': 1}, '|OO', [invalid, 'b'])
+                with self.assertRaisesRegex(UnicodeDecodeError,
+                        f"'utf-8' codec can't decode bytes? "):
+                    parse((), {'b': 1}, '|O', [invalid])
+
+                for name2 in ('b', 'ë', 'ĉ', 'Ɐ', '�'):
+                    with self.subTest(name2=name2):
+                        with self.assertRaisesRegex(TypeError,
+                                f"'{name2}' is an invalid keyword argument"):
+                            parse((), {name2: 1}, '|O', [name])
+
+                name2 = name.encode().decode('latin1')
+                if name2 != name:
+                    with self.assertRaisesRegex(TypeError,
+                            f"'{name2}' is an invalid keyword argument"):
+                        parse((), {name2: 1}, '|O', [name])
+                    name3 = name + '3'
+                    with self.assertRaisesRegex(TypeError,
+                            f"'{name2}' is an invalid keyword argument"):
+                        parse((), {name2: 1, name3: 2}, '|OO', [name, name3])
+
+    def test_nested_tuple(self):
+        parse = _testcapi.parse_tuple_and_keywords
 
-class Test_testcapi(unittest.TestCase):
-    locals().update((name, getattr(_testcapi, name))
-                    for name in dir(_testcapi)
-                    if name.startswith('test_') and name.endswith('_code'))
+        self.assertEqual(parse(((1, 2, 3),), {}, '(OOO)', ['a']), (1, 2, 3))
+        self.assertEqual(parse((1, (2, 3), 4), {}, 'O(OO)O', ['a', 'b', 'c']),
+                         (1, 2, 3, 4))
+        parse(((1, 2, 3),), {}, '(iii)', ['a'])
+
+        with self.assertRaisesRegex(TypeError,
+                "argument 1 must be sequence of length 2, not 3"):
+            parse(((1, 2, 3),), {}, '(ii)', ['a'])
+        with self.assertRaisesRegex(TypeError,
+                "argument 1 must be sequence of length 2, not 1"):
+            parse(((1,),), {}, '(ii)', ['a'])
+        with self.assertRaisesRegex(TypeError,
+                "argument 1 must be 2-item sequence, not int"):
+            parse((1,), {}, '(ii)', ['a'])
+        with self.assertRaisesRegex(TypeError,
+                "argument 1 must be 2-item sequence, not bytes"):
+            parse((b'ab',), {}, '(ii)', ['a'])
+
+        for f in 'es', 'et', 'es#', 'et#':
+            with self.assertRaises(LookupError):  # empty encoding ""
+                parse((('a',),), {}, '(' + f + ')', ['a'])
+            with self.assertRaisesRegex(TypeError,
+                    "argument 1 must be sequence of length 1, not 0"):
+                parse(((),), {}, '(' + f + ')', ['a'])
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_capi/test_hash.py b/Lib/test/test_capi/test_hash.py
new file mode 100644
index 00000000000000..8436da7c32df10
--- /dev/null
+++ b/Lib/test/test_capi/test_hash.py
@@ -0,0 +1,79 @@
+import sys
+import unittest
+from test.support import import_helper
+_testcapi = import_helper.import_module('_testcapi')
+
+
+SIZEOF_VOID_P = _testcapi.SIZEOF_VOID_P
+SIZEOF_PY_HASH_T = SIZEOF_VOID_P
+
+
+class CAPITest(unittest.TestCase):
+    def test_hash_getfuncdef(self):
+        # Test PyHash_GetFuncDef()
+        hash_getfuncdef = _testcapi.hash_getfuncdef
+        func_def = hash_getfuncdef()
+
+        match func_def.name:
+            case "fnv":
+                self.assertEqual(func_def.hash_bits, 8 * SIZEOF_PY_HASH_T)
+                self.assertEqual(func_def.seed_bits, 16 * SIZEOF_PY_HASH_T)
+            case "siphash13":
+                self.assertEqual(func_def.hash_bits, 64)
+                self.assertEqual(func_def.seed_bits, 128)
+            case "siphash24":
+                self.assertEqual(func_def.hash_bits, 64)
+                self.assertEqual(func_def.seed_bits, 128)
+            case _:
+                self.fail(f"unknown function name: {func_def.name!r}")
+
+        # compare with sys.hash_info
+        hash_info = sys.hash_info
+        self.assertEqual(func_def.name, hash_info.algorithm)
+        self.assertEqual(func_def.hash_bits, hash_info.hash_bits)
+        self.assertEqual(func_def.seed_bits, hash_info.seed_bits)
+
+    def test_hash_pointer(self):
+        # Test Py_HashPointer()
+        hash_pointer = _testcapi.hash_pointer
+
+        UHASH_T_MASK = ((2 ** (8 * SIZEOF_PY_HASH_T)) - 1)
+        HASH_T_MAX = (2 ** (8 * SIZEOF_PY_HASH_T - 1) - 1)
+
+        def python_hash_pointer(x):
+            # Py_HashPointer() rotates the pointer bits by 4 bits to the right
+            x = (x >> 4) | ((x & 15) << (8 * SIZEOF_VOID_P - 4))
+
+            # Convert unsigned uintptr_t (Py_uhash_t) to signed Py_hash_t
+            if HASH_T_MAX < x:
+                x = (~x) + 1
+                x &= UHASH_T_MASK
+                x = (~x) + 1
+            return x
+
+        if SIZEOF_VOID_P == 8:
+            values = (
+                0xABCDEF1234567890,
+                0x1234567890ABCDEF,
+                0xFEE4ABEDD1CECA5E,
+            )
+        else:
+            values = (
+                0x12345678,
+                0x1234ABCD,
+                0xDEADCAFE,
+            )
+
+        for value in values:
+            expected = python_hash_pointer(value)
+            with self.subTest(value=value):
+                self.assertEqual(hash_pointer(value), expected,
+                                 f"hash_pointer({value:x}) = "
+                                 f"{hash_pointer(value):x} != {expected:x}")
+
+        # Py_HashPointer(NULL) returns 0
+        self.assertEqual(hash_pointer(0), 0)
+
+        # Py_HashPointer((void*)(uintptr_t)-1) doesn't return -1 but -2
+        VOID_P_MAX = -1 & (2 ** (8 * SIZEOF_VOID_P) - 1)
+        self.assertEqual(hash_pointer(VOID_P_MAX), -2)
diff --git a/Lib/test/test_capi/test_list.py b/Lib/test/test_capi/test_list.py
new file mode 100644
index 00000000000000..eb03d51d3def37
--- /dev/null
+++ b/Lib/test/test_capi/test_list.py
@@ -0,0 +1,344 @@
+import gc
+import weakref
+import unittest
+from test.support import import_helper
+from collections import UserList
+_testcapi = import_helper.import_module('_testcapi')
+
+NULL = None
+PY_SSIZE_T_MIN = _testcapi.PY_SSIZE_T_MIN
+PY_SSIZE_T_MAX = _testcapi.PY_SSIZE_T_MAX
+
+class ListSubclass(list):
+    pass
+
+
+class DelAppend:
+    def __init__(self, lst, item):
+        self.lst = lst
+        self.item = item
+
+    def __del__(self):
+        self.lst.append(self.item)
+
+
+class CAPITest(unittest.TestCase):
+    def test_check(self):
+        # Test PyList_Check()
+        check = _testcapi.list_check
+        self.assertTrue(check([1, 2]))
+        self.assertTrue(check([]))
+        self.assertTrue(check(ListSubclass([1, 2])))
+        self.assertFalse(check({1: 2}))
+        self.assertFalse(check((1, 2)))
+        self.assertFalse(check(42))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+
+    def test_list_check_exact(self):
+        # Test PyList_CheckExact()
+        check = _testcapi.list_check_exact
+        self.assertTrue(check([1]))
+        self.assertTrue(check([]))
+        self.assertFalse(check(ListSubclass([1])))
+        self.assertFalse(check(UserList([1, 2])))
+        self.assertFalse(check({1: 2}))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_list_new(self):
+        # Test PyList_New()
+        list_new = _testcapi.list_new
+        lst = list_new(0)
+        self.assertEqual(lst, [])
+        self.assertIs(type(lst), list)
+        lst2 = list_new(0)
+        self.assertIsNot(lst2, lst)
+        self.assertRaises(SystemError, list_new, NULL)
+        self.assertRaises(SystemError, list_new, -1)
+
+    def test_list_size(self):
+        # Test PyList_Size()
+        size = _testcapi.list_size
+        self.assertEqual(size([1, 2]), 2)
+        self.assertEqual(size(ListSubclass([1, 2])), 2)
+        self.assertRaises(SystemError, size, UserList())
+        self.assertRaises(SystemError, size, {})
+        self.assertRaises(SystemError, size, 23)
+        self.assertRaises(SystemError, size, object())
+        # CRASHES size(NULL)
+
+    def test_list_get_size(self):
+        # Test PyList_GET_SIZE()
+        size = _testcapi.list_get_size
+        self.assertEqual(size([1, 2]), 2)
+        self.assertEqual(size(ListSubclass([1, 2])), 2)
+        # CRASHES size(object())
+        # CRASHES size(23)
+        # CRASHES size({})
+        # CRASHES size(UserList())
+        # CRASHES size(NULL)
+
+
+    def test_list_getitem(self):
+        # Test PyList_GetItem()
+        getitem = _testcapi.list_getitem
+        lst = [1, 2, 3]
+        self.assertEqual(getitem(lst, 0), 1)
+        self.assertEqual(getitem(lst, 2), 3)
+        self.assertRaises(IndexError, getitem, lst, 3)
+        self.assertRaises(IndexError, getitem, lst, -1)
+        self.assertRaises(IndexError, getitem, lst, PY_SSIZE_T_MIN)
+        self.assertRaises(IndexError, getitem, lst, PY_SSIZE_T_MAX)
+        self.assertRaises(SystemError, getitem, 42, 1)
+        self.assertRaises(SystemError, getitem, (1, 2, 3), 1)
+        self.assertRaises(SystemError, getitem, {1: 2}, 1)
+
+        # CRASHES getitem(NULL, 1)
+
+    def test_list_get_item(self):
+        # Test PyList_GET_ITEM()
+        get_item = _testcapi.list_get_item
+        lst = [1, 2, [1, 2, 3]]
+        self.assertEqual(get_item(lst, 0), 1)
+        self.assertEqual(get_item(lst, 2), [1, 2, 3])
+
+        # CRASHES for out of index: get_item(lst, 3)
+        # CRASHES for get_item(lst, PY_SSIZE_T_MIN)
+        # CRASHES for get_item(lst, PY_SSIZE_T_MAX)
+        # CRASHES get_item(21, 2)
+        # CRASHES get_item(NULL, 1)
+
+
+    def test_list_setitem(self):
+        # Test PyList_SetItem()
+        setitem = _testcapi.list_setitem
+        lst = [1, 2, 3]
+        setitem(lst, 0, 10)
+        self.assertEqual(lst, [10, 2, 3])
+        setitem(lst, 2, 12)
+        self.assertEqual(lst, [10, 2, 12])
+        self.assertRaises(IndexError, setitem, lst, 3 , 5)
+        self.assertRaises(IndexError, setitem, lst, -1, 5)
+        self.assertRaises(IndexError, setitem, lst, PY_SSIZE_T_MIN, 5)
+        self.assertRaises(IndexError, setitem, lst, PY_SSIZE_T_MAX, 5)
+        self.assertRaises(SystemError, setitem, (1, 2, 3), 1, 5)
+        self.assertRaises(SystemError, setitem, {1: 2}, 1, 5)
+
+        # CRASHES setitem(NULL, 'a', 5)
+
+    def test_list_set_item(self):
+        # Test PyList_SET_ITEM()
+        set_item = _testcapi.list_set_item
+        lst = [1, 2, 3]
+        set_item(lst, 1, 10)
+        set_item(lst, 2, [1, 2, 3])
+        self.assertEqual(lst, [1, 10, [1, 2, 3]])
+
+        # CRASHES for set_item([1], -1, 5)
+        # CRASHES for set_item([1], PY_SSIZE_T_MIN, 5)
+        # CRASHES for set_item([1], PY_SSIZE_T_MAX, 5)
+        # CRASHES for set_item([], 0, 1)
+        # CRASHES for set_item(NULL, 0, 1)
+
+
+    def test_list_insert(self):
+        # Test PyList_Insert()
+        insert = _testcapi.list_insert
+        lst = [1, 2, 3]
+        insert(lst, 0, 23)
+        self.assertEqual(lst, [23, 1, 2, 3])
+        insert(lst, -1, 22)
+        self.assertEqual(lst, [23, 1, 2, 22, 3])
+        insert(lst, PY_SSIZE_T_MIN, 1)
+        self.assertEqual(lst[0], 1)
+        insert(lst, len(lst), 123)
+        self.assertEqual(lst[-1], 123)
+        insert(lst, len(lst)-1, 124)
+        self.assertEqual(lst[-2], 124)
+        insert(lst, PY_SSIZE_T_MAX, 223)
+        self.assertEqual(lst[-1], 223)
+
+        self.assertRaises(SystemError, insert, (1, 2, 3), 1, 5)
+        self.assertRaises(SystemError, insert, {1: 2}, 1, 5)
+
+        # CRASHES insert(NULL, 1, 5)
+
+    def test_list_append(self):
+        # Test PyList_Append()
+        append = _testcapi.list_append
+        lst = [1, 2, 3]
+        append(lst, 10)
+        self.assertEqual(lst, [1, 2, 3, 10])
+        append(lst, [4, 5])
+        self.assertEqual(lst, [1, 2, 3, 10, [4, 5]])
+        self.assertRaises(SystemError, append, lst, NULL)
+        self.assertRaises(SystemError, append, (), 0)
+        self.assertRaises(SystemError, append, 42, 0)
+        # CRASHES append(NULL, 0)
+
+    def test_list_getslice(self):
+        # Test PyList_GetSlice()
+        getslice = _testcapi.list_getslice
+        lst = [1, 2, 3]
+
+        # empty
+        self.assertEqual(getslice(lst, PY_SSIZE_T_MIN, 0), [])
+        self.assertEqual(getslice(lst, -1, 0), [])
+        self.assertEqual(getslice(lst, 3, PY_SSIZE_T_MAX), [])
+
+        # slice
+        self.assertEqual(getslice(lst, 1, 3), [2, 3])
+
+        # whole
+        self.assertEqual(getslice(lst, 0, len(lst)), lst)
+        self.assertEqual(getslice(lst, 0, 100), lst)
+        self.assertEqual(getslice(lst, -100, 100), lst)
+
+        self.assertRaises(SystemError, getslice, (1, 2, 3), 0, 0)
+        self.assertRaises(SystemError, getslice, 'abc', 0, 0)
+        self.assertRaises(SystemError, getslice, 42, 0, 0)
+
+        # CRASHES getslice(NULL, 0, 0)
+
+    def test_list_setslice(self):
+        # Test PyList_SetSlice()
+        list_setslice = _testcapi.list_setslice
+        def set_slice(lst, low, high, value):
+            lst = lst.copy()
+            self.assertEqual(list_setslice(lst, low, high, value), 0)
+            return lst
+
+        # insert items
+        self.assertEqual(set_slice([], 0, 0, list("abc")), list("abc"))
+        self.assertEqual(set_slice([], PY_SSIZE_T_MIN, PY_SSIZE_T_MIN, list("abc")), list("abc"))
+        self.assertEqual(set_slice([], PY_SSIZE_T_MAX, PY_SSIZE_T_MAX, list("abc")), list("abc"))
+        lst = list("abc")
+        self.assertEqual(set_slice(lst, 0, 0, ["X"]), list("Xabc"))
+        self.assertEqual(set_slice(lst, 1, 1, list("XY")), list("aXYbc"))
+        self.assertEqual(set_slice(lst, len(lst), len(lst), ["X"]), list("abcX"))
+        # self.assertEqual(set_slice(lst, PY_SSIZE_T_MAX, PY_SSIZE_T_MAX, ["X"]), list("abcX"))
+
+        # replace items
+        lst = list("abc")
+        self.assertEqual(set_slice(lst, -100, 1, list("X")), list("Xbc"))
+        self.assertEqual(set_slice(lst, 1, 2, list("X")), list("aXc"))
+        self.assertEqual(set_slice(lst, 1, 3, list("XY")), list("aXY"))
+        self.assertEqual(set_slice(lst, 0, 3, list("XYZ")), list("XYZ"))
+
+        # delete items
+        lst = list("abcdef")
+        self.assertEqual(set_slice(lst, 0, len(lst), []), [])
+        self.assertEqual(set_slice(lst, -100, 100, []), [])
+        self.assertEqual(set_slice(lst, 1, 5, []), list("af"))
+        self.assertEqual(set_slice(lst, 3, len(lst), []), list("abc"))
+
+        # delete items with NULL
+        lst = list("abcdef")
+        self.assertEqual(set_slice(lst, 0, len(lst), NULL), [])
+        self.assertEqual(set_slice(lst, 3, len(lst), NULL), list("abc"))
+
+        self.assertRaises(SystemError, list_setslice, (), 0, 0, [])
+        self.assertRaises(SystemError, list_setslice, 42, 0, 0, [])
+
+        # Item finalizer modify the list (clear the list)
+        lst = []
+        lst.append(DelAppend(lst, 'zombie'))
+        self.assertEqual(list_setslice(lst, 0, len(lst), NULL), 0)
+        self.assertEqual(lst, ['zombie'])
+
+        # Item finalizer modify the list (remove an list item)
+        lst = []
+        lst.append(DelAppend(lst, 'zombie'))
+        lst.extend("abc")
+        self.assertEqual(list_setslice(lst, 0, 1, NULL), 0)
+        self.assertEqual(lst, ['a', 'b', 'c', 'zombie'])
+
+        # CRASHES setslice(NULL, 0, 0, [])
+
+    def test_list_sort(self):
+        # Test PyList_Sort()
+        sort = _testcapi.list_sort
+        lst = [4, 6, 7, 3, 1, 5, 9, 2, 0, 8]
+        sort(lst)
+        self.assertEqual(lst, list(range(10)))
+
+        lst2 = ListSubclass([4, 6, 7, 3, 1, 5, 9, 2, 0, 8])
+        sort(lst2)
+        self.assertEqual(lst2, list(range(10)))
+
+        self.assertRaises(SystemError, sort, ())
+        self.assertRaises(SystemError, sort, object())
+        self.assertRaises(SystemError, sort, NULL)
+
+
+    def test_list_reverse(self):
+        # Test PyList_Reverse()
+        reverse = _testcapi.list_reverse
+        def list_reverse(lst):
+            self.assertEqual(reverse(lst), 0)
+            return lst
+
+        self.assertEqual(list_reverse([]), [])
+        self.assertEqual(list_reverse([2, 5, 10]), [10, 5, 2])
+
+        self.assertRaises(SystemError, reverse, ())
+        self.assertRaises(SystemError, reverse, object())
+        self.assertRaises(SystemError, reverse, NULL)
+
+    def test_list_astuple(self):
+        # Test PyList_AsTuple()
+        astuple = _testcapi.list_astuple
+        self.assertEqual(astuple([]), ())
+        self.assertEqual(astuple([2, 5, 10]), (2, 5, 10))
+
+        self.assertRaises(SystemError, astuple, ())
+        self.assertRaises(SystemError, astuple, object())
+        self.assertRaises(SystemError, astuple, NULL)
+
+    def test_list_clear(self):
+        # Test PyList_Clear()
+        list_clear = _testcapi.list_clear
+
+        lst = [1, 2, 3]
+        self.assertEqual(list_clear(lst), 0)
+        self.assertEqual(lst, [])
+
+        lst = []
+        self.assertEqual(list_clear(lst), 0)
+        self.assertEqual(lst, [])
+
+        self.assertRaises(SystemError, list_clear, ())
+        self.assertRaises(SystemError, list_clear, object())
+
+        # Item finalizer modify the list
+        lst = []
+        lst.append(DelAppend(lst, 'zombie'))
+        list_clear(lst)
+        self.assertEqual(lst, ['zombie'])
+
+        # CRASHES list_clear(NULL)
+
+    def test_list_extend(self):
+        # Test PyList_Extend()
+        list_extend = _testcapi.list_extend
+
+        for other_type in (list, tuple, str, iter):
+            lst = list("ab")
+            arg = other_type("def")
+            self.assertEqual(list_extend(lst, arg), 0)
+            self.assertEqual(lst, list("abdef"))
+
+        # PyList_Extend(lst, lst)
+        lst = list("abc")
+        self.assertEqual(list_extend(lst, lst), 0)
+        self.assertEqual(lst, list("abcabc"))
+
+        self.assertRaises(TypeError, list_extend, [], object())
+        self.assertRaises(SystemError, list_extend, (), list("abc"))
+
+        # CRASHES list_extend(NULL, [])
+        # CRASHES list_extend([], NULL)
diff --git a/Lib/test/test_capi/test_long.py b/Lib/test/test_capi/test_long.py
new file mode 100644
index 00000000000000..8e3ef25d1ff86f
--- /dev/null
+++ b/Lib/test/test_capi/test_long.py
@@ -0,0 +1,428 @@
+import unittest
+import sys
+
+from test.support import import_helper
+
+# Skip this test if the _testcapi module isn't available.
+_testcapi = import_helper.import_module('_testcapi')
+
+NULL = None
+
+class IntSubclass(int):
+    pass
+
+class Index:
+    def __init__(self, value):
+        self.value = value
+
+    def __index__(self):
+        return self.value
+
+# use __index__(), not __int__()
+class MyIndexAndInt:
+    def __index__(self):
+        return 10
+    def __int__(self):
+        return 22
+
+
+class LongTests(unittest.TestCase):
+
+    def test_compact(self):
+        for n in {
+            # Edge cases
+            *(2**n for n in range(66)),
+            *(-2**n for n in range(66)),
+            *(2**n - 1 for n in range(66)),
+            *(-2**n + 1 for n in range(66)),
+            # Essentially random
+            *(37**n for n in range(14)),
+            *(-37**n for n in range(14)),
+        }:
+            with self.subTest(n=n):
+                is_compact, value = _testcapi.call_long_compact_api(n)
+                if is_compact:
+                    self.assertEqual(n, value)
+
+    def test_compact_known(self):
+        # Sanity-check some implementation details (we don't guarantee
+        # that these are/aren't compact)
+        self.assertEqual(_testcapi.call_long_compact_api(-1), (True, -1))
+        self.assertEqual(_testcapi.call_long_compact_api(0), (True, 0))
+        self.assertEqual(_testcapi.call_long_compact_api(256), (True, 256))
+        self.assertEqual(_testcapi.call_long_compact_api(sys.maxsize),
+                         (False, -1))
+
+    def test_long_check(self):
+        # Test PyLong_Check()
+        check = _testcapi.pylong_check
+        self.assertTrue(check(1))
+        self.assertTrue(check(123456789012345678901234567890))
+        self.assertTrue(check(-1))
+        self.assertTrue(check(True))
+        self.assertTrue(check(IntSubclass(1)))
+        self.assertFalse(check(1.0))
+        self.assertFalse(check(object()))
+        # CRASHES check(NULL)
+
+    def test_long_checkexact(self):
+        # Test PyLong_CheckExact()
+        check = _testcapi.pylong_checkexact
+        self.assertTrue(check(1))
+        self.assertTrue(check(123456789012345678901234567890))
+        self.assertTrue(check(-1))
+        self.assertFalse(check(True))
+        self.assertFalse(check(IntSubclass(1)))
+        self.assertFalse(check(1.0))
+        self.assertFalse(check(object()))
+        # CRASHES check(NULL)
+
+    def test_long_fromdouble(self):
+        # Test PyLong_FromDouble()
+        fromdouble = _testcapi.pylong_fromdouble
+        float_max = sys.float_info.max
+        for value in (5.0, 5.1, 5.9, -5.1, -5.9, 0.0, -0.0, float_max, -float_max):
+            with self.subTest(value=value):
+                self.assertEqual(fromdouble(value), int(value))
+        self.assertRaises(OverflowError, fromdouble, float('inf'))
+        self.assertRaises(OverflowError, fromdouble, float('-inf'))
+        self.assertRaises(ValueError, fromdouble, float('nan'))
+
+    def test_long_fromvoidptr(self):
+        # Test PyLong_FromVoidPtr()
+        fromvoidptr = _testcapi.pylong_fromvoidptr
+        obj = object()
+        x = fromvoidptr(obj)
+        y = fromvoidptr(NULL)
+        self.assertIsInstance(x, int)
+        self.assertGreaterEqual(x, 0)
+        self.assertIsInstance(y, int)
+        self.assertEqual(y, 0)
+        self.assertNotEqual(x, y)
+
+    def test_long_fromstring(self):
+        # Test PyLong_FromString()
+        fromstring = _testcapi.pylong_fromstring
+        self.assertEqual(fromstring(b'123', 10), (123, 3))
+        self.assertEqual(fromstring(b'cafe', 16), (0xcafe, 4))
+        self.assertEqual(fromstring(b'xyz', 36), (44027, 3))
+        self.assertEqual(fromstring(b'123', 0), (123, 3))
+        self.assertEqual(fromstring(b'0xcafe', 0), (0xcafe, 6))
+        self.assertRaises(ValueError, fromstring, b'cafe', 0)
+        self.assertEqual(fromstring(b'-123', 10), (-123, 4))
+        self.assertEqual(fromstring(b' -123 ', 10), (-123, 6))
+        self.assertEqual(fromstring(b'1_23', 10), (123, 4))
+        self.assertRaises(ValueError, fromstring, b'- 123', 10)
+        self.assertRaises(ValueError, fromstring, b'', 10)
+
+        self.assertRaises(ValueError, fromstring, b'123', 1)
+        self.assertRaises(ValueError, fromstring, b'123', -1)
+        self.assertRaises(ValueError, fromstring, b'123', 37)
+
+        self.assertRaises(ValueError, fromstring, '١٢٣٤٥٦٧٨٩٠'.encode(), 0)
+        self.assertRaises(ValueError, fromstring, '١٢٣٤٥٦٧٨٩٠'.encode(), 16)
+
+        self.assertEqual(fromstring(b'123\x00', 0), (123, 3))
+        self.assertEqual(fromstring(b'123\x00456', 0), (123, 3))
+        self.assertEqual(fromstring(b'123\x00', 16), (0x123, 3))
+        self.assertEqual(fromstring(b'123\x00456', 16), (0x123, 3))
+
+        # CRASHES fromstring(NULL, 0)
+        # CRASHES fromstring(NULL, 16)
+
+    def test_long_fromunicodeobject(self):
+        # Test PyLong_FromUnicodeObject()
+        fromunicodeobject = _testcapi.pylong_fromunicodeobject
+        self.assertEqual(fromunicodeobject('123', 10), 123)
+        self.assertEqual(fromunicodeobject('cafe', 16), 0xcafe)
+        self.assertEqual(fromunicodeobject('xyz', 36), 44027)
+        self.assertEqual(fromunicodeobject('123', 0), 123)
+        self.assertEqual(fromunicodeobject('0xcafe', 0), 0xcafe)
+        self.assertRaises(ValueError, fromunicodeobject, 'cafe', 0)
+        self.assertEqual(fromunicodeobject('-123', 10), -123)
+        self.assertEqual(fromunicodeobject(' -123 ', 10), -123)
+        self.assertEqual(fromunicodeobject('1_23', 10), 123)
+        self.assertRaises(ValueError, fromunicodeobject, '- 123', 10)
+        self.assertRaises(ValueError, fromunicodeobject, '', 10)
+
+        self.assertRaises(ValueError, fromunicodeobject, '123', 1)
+        self.assertRaises(ValueError, fromunicodeobject, '123', -1)
+        self.assertRaises(ValueError, fromunicodeobject, '123', 37)
+
+        self.assertEqual(fromunicodeobject('١٢٣٤٥٦٧٨٩٠', 0), 1234567890)
+        self.assertEqual(fromunicodeobject('١٢٣٤٥٦٧٨٩٠', 16), 0x1234567890)
+
+        self.assertRaises(ValueError, fromunicodeobject, '123\x00', 0)
+        self.assertRaises(ValueError, fromunicodeobject, '123\x00456', 0)
+        self.assertRaises(ValueError, fromunicodeobject, '123\x00', 16)
+        self.assertRaises(ValueError, fromunicodeobject, '123\x00456', 16)
+
+        # CRASHES fromunicodeobject(NULL, 0)
+        # CRASHES fromunicodeobject(NULL, 16)
+
+    def test_long_asint(self):
+        # Test PyLong_AsInt()
+        PyLong_AsInt = _testcapi.PyLong_AsInt
+        from _testcapi import INT_MIN, INT_MAX
+
+        # round trip (object -> int -> object)
+        for value in (INT_MIN, INT_MAX, -1, 0, 1, 123):
+            with self.subTest(value=value):
+                self.assertEqual(PyLong_AsInt(value), value)
+        self.assertEqual(PyLong_AsInt(IntSubclass(42)), 42)
+        self.assertEqual(PyLong_AsInt(Index(42)), 42)
+        self.assertEqual(PyLong_AsInt(MyIndexAndInt()), 10)
+
+        # bound checking
+        self.assertRaises(OverflowError, PyLong_AsInt, INT_MIN - 1)
+        self.assertRaises(OverflowError, PyLong_AsInt, INT_MAX + 1)
+
+        # invalid type
+        self.assertRaises(TypeError, PyLong_AsInt, 1.0)
+        self.assertRaises(TypeError, PyLong_AsInt, b'2')
+        self.assertRaises(TypeError, PyLong_AsInt, '3')
+        self.assertRaises(SystemError, PyLong_AsInt, NULL)
+
+    def test_long_aslong(self):
+        # Test PyLong_AsLong() and PyLong_FromLong()
+        aslong = _testcapi.pylong_aslong
+        from _testcapi import LONG_MIN, LONG_MAX
+        # round trip (object -> long -> object)
+        for value in (LONG_MIN, LONG_MAX, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(aslong(value), value)
+
+        self.assertEqual(aslong(IntSubclass(42)), 42)
+        self.assertEqual(aslong(Index(42)), 42)
+        self.assertEqual(aslong(MyIndexAndInt()), 10)
+
+        self.assertRaises(OverflowError, aslong, LONG_MIN - 1)
+        self.assertRaises(OverflowError, aslong, LONG_MAX + 1)
+        self.assertRaises(TypeError, aslong, 1.0)
+        self.assertRaises(TypeError, aslong, b'2')
+        self.assertRaises(TypeError, aslong, '3')
+        self.assertRaises(SystemError, aslong, NULL)
+
+    def test_long_aslongandoverflow(self):
+        # Test PyLong_AsLongAndOverflow()
+        aslongandoverflow = _testcapi.pylong_aslongandoverflow
+        from _testcapi import LONG_MIN, LONG_MAX
+        # round trip (object -> long -> object)
+        for value in (LONG_MIN, LONG_MAX, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(aslongandoverflow(value), (value, 0))
+
+        self.assertEqual(aslongandoverflow(IntSubclass(42)), (42, 0))
+        self.assertEqual(aslongandoverflow(Index(42)), (42, 0))
+        self.assertEqual(aslongandoverflow(MyIndexAndInt()), (10, 0))
+
+        self.assertEqual(aslongandoverflow(LONG_MIN - 1), (-1, -1))
+        self.assertEqual(aslongandoverflow(LONG_MAX + 1), (-1, 1))
+        # CRASHES aslongandoverflow(1.0)
+        # CRASHES aslongandoverflow(NULL)
+
+    def test_long_asunsignedlong(self):
+        # Test PyLong_AsUnsignedLong() and PyLong_FromUnsignedLong()
+        asunsignedlong = _testcapi.pylong_asunsignedlong
+        from _testcapi import ULONG_MAX
+        # round trip (object -> unsigned long -> object)
+        for value in (ULONG_MAX, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(asunsignedlong(value), value)
+
+        self.assertEqual(asunsignedlong(IntSubclass(42)), 42)
+        self.assertRaises(TypeError, asunsignedlong, Index(42))
+        self.assertRaises(TypeError, asunsignedlong, MyIndexAndInt())
+
+        self.assertRaises(OverflowError, asunsignedlong, -1)
+        self.assertRaises(OverflowError, asunsignedlong, ULONG_MAX + 1)
+        self.assertRaises(TypeError, asunsignedlong, 1.0)
+        self.assertRaises(TypeError, asunsignedlong, b'2')
+        self.assertRaises(TypeError, asunsignedlong, '3')
+        self.assertRaises(SystemError, asunsignedlong, NULL)
+
+    def test_long_asunsignedlongmask(self):
+        # Test PyLong_AsUnsignedLongMask()
+        asunsignedlongmask = _testcapi.pylong_asunsignedlongmask
+        from _testcapi import ULONG_MAX
+        # round trip (object -> unsigned long -> object)
+        for value in (ULONG_MAX, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(asunsignedlongmask(value), value)
+
+        self.assertEqual(asunsignedlongmask(IntSubclass(42)), 42)
+        self.assertEqual(asunsignedlongmask(Index(42)), 42)
+        self.assertEqual(asunsignedlongmask(MyIndexAndInt()), 10)
+
+        self.assertEqual(asunsignedlongmask(-1), ULONG_MAX)
+        self.assertEqual(asunsignedlongmask(ULONG_MAX + 1), 0)
+        self.assertRaises(TypeError, asunsignedlongmask, 1.0)
+        self.assertRaises(TypeError, asunsignedlongmask, b'2')
+        self.assertRaises(TypeError, asunsignedlongmask, '3')
+        self.assertRaises(SystemError, asunsignedlongmask, NULL)
+
+    def test_long_aslonglong(self):
+        # Test PyLong_AsLongLong() and PyLong_FromLongLong()
+        aslonglong = _testcapi.pylong_aslonglong
+        from _testcapi import LLONG_MIN, LLONG_MAX
+        # round trip (object -> long long -> object)
+        for value in (LLONG_MIN, LLONG_MAX, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(aslonglong(value), value)
+
+        self.assertEqual(aslonglong(IntSubclass(42)), 42)
+        self.assertEqual(aslonglong(Index(42)), 42)
+        self.assertEqual(aslonglong(MyIndexAndInt()), 10)
+
+        self.assertRaises(OverflowError, aslonglong, LLONG_MIN - 1)
+        self.assertRaises(OverflowError, aslonglong, LLONG_MAX + 1)
+        self.assertRaises(TypeError, aslonglong, 1.0)
+        self.assertRaises(TypeError, aslonglong, b'2')
+        self.assertRaises(TypeError, aslonglong, '3')
+        self.assertRaises(SystemError, aslonglong, NULL)
+
+    def test_long_aslonglongandoverflow(self):
+        # Test PyLong_AsLongLongAndOverflow()
+        aslonglongandoverflow = _testcapi.pylong_aslonglongandoverflow
+        from _testcapi import LLONG_MIN, LLONG_MAX
+        # round trip (object -> long long -> object)
+        for value in (LLONG_MIN, LLONG_MAX, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(aslonglongandoverflow(value), (value, 0))
+
+        self.assertEqual(aslonglongandoverflow(IntSubclass(42)), (42, 0))
+        self.assertEqual(aslonglongandoverflow(Index(42)), (42, 0))
+        self.assertEqual(aslonglongandoverflow(MyIndexAndInt()), (10, 0))
+
+        self.assertEqual(aslonglongandoverflow(LLONG_MIN - 1), (-1, -1))
+        self.assertEqual(aslonglongandoverflow(LLONG_MAX + 1), (-1, 1))
+        # CRASHES aslonglongandoverflow(1.0)
+        # CRASHES aslonglongandoverflow(NULL)
+
+    def test_long_asunsignedlonglong(self):
+        # Test PyLong_AsUnsignedLongLong() and PyLong_FromUnsignedLongLong()
+        asunsignedlonglong = _testcapi.pylong_asunsignedlonglong
+        from _testcapi import ULLONG_MAX
+        # round trip (object -> unsigned long long -> object)
+        for value in (ULLONG_MAX, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(asunsignedlonglong(value), value)
+
+        self.assertEqual(asunsignedlonglong(IntSubclass(42)), 42)
+        self.assertRaises(TypeError, asunsignedlonglong, Index(42))
+        self.assertRaises(TypeError, asunsignedlonglong, MyIndexAndInt())
+
+        self.assertRaises(OverflowError, asunsignedlonglong, -1)
+        self.assertRaises(OverflowError, asunsignedlonglong, ULLONG_MAX + 1)
+        self.assertRaises(TypeError, asunsignedlonglong, 1.0)
+        self.assertRaises(TypeError, asunsignedlonglong, b'2')
+        self.assertRaises(TypeError, asunsignedlonglong, '3')
+        self.assertRaises(SystemError, asunsignedlonglong, NULL)
+
+    def test_long_asunsignedlonglongmask(self):
+        # Test PyLong_AsUnsignedLongLongMask()
+        asunsignedlonglongmask = _testcapi.pylong_asunsignedlonglongmask
+        from _testcapi import ULLONG_MAX
+        # round trip (object -> unsigned long long -> object)
+        for value in (ULLONG_MAX, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(asunsignedlonglongmask(value), value)
+
+        self.assertEqual(asunsignedlonglongmask(IntSubclass(42)), 42)
+        self.assertEqual(asunsignedlonglongmask(Index(42)), 42)
+        self.assertEqual(asunsignedlonglongmask(MyIndexAndInt()), 10)
+
+        self.assertEqual(asunsignedlonglongmask(-1), ULLONG_MAX)
+        self.assertEqual(asunsignedlonglongmask(ULLONG_MAX + 1), 0)
+        self.assertRaises(TypeError, asunsignedlonglongmask, 1.0)
+        self.assertRaises(TypeError, asunsignedlonglongmask, b'2')
+        self.assertRaises(TypeError, asunsignedlonglongmask, '3')
+        self.assertRaises(SystemError, asunsignedlonglongmask, NULL)
+
+    def test_long_as_ssize_t(self):
+        # Test PyLong_AsSsize_t() and PyLong_FromSsize_t()
+        as_ssize_t = _testcapi.pylong_as_ssize_t
+        from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
+        # round trip (object -> Py_ssize_t -> object)
+        for value in (PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(as_ssize_t(value), value)
+
+        self.assertEqual(as_ssize_t(IntSubclass(42)), 42)
+        self.assertRaises(TypeError, as_ssize_t, Index(42))
+        self.assertRaises(TypeError, as_ssize_t, MyIndexAndInt())
+
+        self.assertRaises(OverflowError, as_ssize_t, PY_SSIZE_T_MIN - 1)
+        self.assertRaises(OverflowError, as_ssize_t, PY_SSIZE_T_MAX + 1)
+        self.assertRaises(TypeError, as_ssize_t, 1.0)
+        self.assertRaises(TypeError, as_ssize_t, b'2')
+        self.assertRaises(TypeError, as_ssize_t, '3')
+        self.assertRaises(SystemError, as_ssize_t, NULL)
+
+    def test_long_as_size_t(self):
+        # Test PyLong_AsSize_t() and PyLong_FromSize_t()
+        as_size_t = _testcapi.pylong_as_size_t
+        from _testcapi import SIZE_MAX
+        # round trip (object -> size_t -> object)
+        for value in (SIZE_MAX, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(as_size_t(value), value)
+
+        self.assertEqual(as_size_t(IntSubclass(42)), 42)
+        self.assertRaises(TypeError, as_size_t, Index(42))
+        self.assertRaises(TypeError, as_size_t, MyIndexAndInt())
+
+        self.assertRaises(OverflowError, as_size_t, -1)
+        self.assertRaises(OverflowError, as_size_t, SIZE_MAX + 1)
+        self.assertRaises(TypeError, as_size_t, 1.0)
+        self.assertRaises(TypeError, as_size_t, b'2')
+        self.assertRaises(TypeError, as_size_t, '3')
+        self.assertRaises(SystemError, as_size_t, NULL)
+
+    def test_long_asdouble(self):
+        # Test PyLong_AsDouble()
+        asdouble = _testcapi.pylong_asdouble
+        MAX = int(sys.float_info.max)
+        for value in (-MAX, MAX, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(asdouble(value), float(value))
+                self.assertIsInstance(asdouble(value), float)
+
+        self.assertEqual(asdouble(IntSubclass(42)), 42.0)
+        self.assertRaises(TypeError, asdouble, Index(42))
+        self.assertRaises(TypeError, asdouble, MyIndexAndInt())
+
+        self.assertRaises(OverflowError, asdouble, 2 * MAX)
+        self.assertRaises(OverflowError, asdouble, -2 * MAX)
+        self.assertRaises(TypeError, asdouble, 1.0)
+        self.assertRaises(TypeError, asdouble, b'2')
+        self.assertRaises(TypeError, asdouble, '3')
+        self.assertRaises(SystemError, asdouble, NULL)
+
+    def test_long_asvoidptr(self):
+        # Test PyLong_AsVoidPtr()
+        fromvoidptr = _testcapi.pylong_fromvoidptr
+        asvoidptr = _testcapi.pylong_asvoidptr
+        obj = object()
+        x = fromvoidptr(obj)
+        y = fromvoidptr(NULL)
+        self.assertIs(asvoidptr(x), obj)
+        self.assertIs(asvoidptr(y), NULL)
+        self.assertIs(asvoidptr(IntSubclass(x)), obj)
+
+        # negative values
+        M = (1 << _testcapi.SIZEOF_VOID_P * 8)
+        if x >= M//2:
+            self.assertIs(asvoidptr(x - M), obj)
+        if y >= M//2:
+            self.assertIs(asvoidptr(y - M), NULL)
+
+        self.assertRaises(TypeError, asvoidptr, Index(x))
+        self.assertRaises(TypeError, asvoidptr, object())
+        self.assertRaises(OverflowError, asvoidptr, 2**1000)
+        self.assertRaises(OverflowError, asvoidptr, -2**1000)
+        # CRASHES asvoidptr(NULL)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_mem.py b/Lib/test/test_capi/test_mem.py
index a9ff410cb93ab8..72f23b1a34080e 100644
--- a/Lib/test/test_capi/test_mem.py
+++ b/Lib/test/test_capi/test_mem.py
@@ -8,8 +8,10 @@
 from test.support.script_helper import assert_python_failure, assert_python_ok
 
 
-# Skip this test if the _testcapi module isn't available.
+# Skip this test if the _testcapi and _testinternalcapi extensions are not
+# available.
 _testcapi = import_helper.import_module('_testcapi')
+_testinternalcapi = import_helper.import_module('_testinternalcapi')
 
 @requires_subprocess()
 class PyMemDebugTests(unittest.TestCase):
@@ -84,16 +86,13 @@ def test_pyobject_malloc_without_gil(self):
 
     def check_pyobject_is_freed(self, func_name):
         code = textwrap.dedent(f'''
-            import gc, os, sys, _testcapi
+            import gc, os, sys, _testinternalcapi
             # Disable the GC to avoid crash on GC collection
             gc.disable()
-            try:
-                _testcapi.{func_name}()
-                # Exit immediately to avoid a crash while deallocating
-                # the invalid object
-                os._exit(0)
-            except _testcapi.error:
-                os._exit(1)
+            _testinternalcapi.{func_name}()
+            # Exit immediately to avoid a crash while deallocating
+            # the invalid object
+            os._exit(0)
         ''')
         assert_python_ok(
             '-c', code,
@@ -113,6 +112,9 @@ def test_pyobject_forbidden_bytes_is_freed(self):
     def test_pyobject_freed_is_freed(self):
         self.check_pyobject_is_freed('check_pyobject_freed_is_freed')
 
+    # Python built with Py_TRACE_REFS fail with a fatal error in
+    # _PyRefchain_Trace() on memory allocation error.
+    @unittest.skipIf(support.Py_TRACE_REFS, 'cannot test Py_TRACE_REFS build')
     def test_set_nomemory(self):
         code = """if 1:
             import _testcapi
diff --git a/Lib/test/test_capi/test_misc.py b/Lib/test/test_capi/test_misc.py
index 0ef0b5d8b65803..3d86ae37190475 100644
--- a/Lib/test/test_capi/test_misc.py
+++ b/Lib/test/test_capi/test_misc.py
@@ -1,18 +1,22 @@
 # Run the _testcapi module tests (tests for the Python/C API):  by defn,
 # these are all functions _testcapi exports whose name begins with 'test_'.
 
-from collections import OrderedDict
 import _thread
+from collections import deque
+import contextlib
 import importlib.machinery
 import importlib.util
+import json
+import opcode
 import os
 import pickle
+import queue
 import random
-import subprocess
 import sys
 import textwrap
 import threading
 import time
+import types
 import unittest
 import warnings
 import weakref
@@ -36,6 +40,10 @@
     import _testsinglephase
 except ImportError:
     _testsinglephase = None
+try:
+    import _xxsubinterpreters as _interpreters
+except ModuleNotFoundError:
+    _interpreters = None
 
 # Skip this test if the _testcapi module isn't available.
 _testcapi = import_helper.import_module('_testcapi')
@@ -43,10 +51,18 @@
 import _testinternalcapi
 
 
+NULL = None
+
 def decode_stderr(err):
     return err.decode('utf-8', 'replace').replace('\r', '')
 
 
+def requires_subinterpreters(meth):
+    """Decorator to skip a test if subinterpreters are not supported."""
+    return unittest.skipIf(_interpreters is None,
+                           'subinterpreters required')(meth)
+
+
 def testfunction(self):
     """some doc"""
     return self
@@ -71,9 +87,15 @@ def test_instancemethod(self):
 
     @support.requires_subprocess()
     def test_no_FatalError_infinite_loop(self):
-        run_result, _cmd_line = run_python_until_end(
-            '-c', 'import _testcapi; _testcapi.crash_no_current_thread()',
-        )
+        code = textwrap.dedent("""
+            import _testcapi
+            from test import support
+
+            with support.SuppressCrashReport():
+                _testcapi.crash_no_current_thread()
+        """)
+
+        run_result, _cmd_line = run_python_until_end('-c', code)
         _rc, out, err = run_result
         self.assertEqual(out, b'')
         # This used to cause an infinite loop.
@@ -276,157 +298,132 @@ def test_getitem_with_error(self):
             # test _Py_CheckFunctionResult() instead.
             self.assertIn('returned a result with an exception set', err)
 
+    def test_buildvalue(self):
+        # Test Py_BuildValue() with object arguments
+        buildvalue = _testcapi.py_buildvalue
+        self.assertEqual(buildvalue(''), None)
+        self.assertEqual(buildvalue('()'), ())
+        self.assertEqual(buildvalue('[]'), [])
+        self.assertEqual(buildvalue('{}'), {})
+        self.assertEqual(buildvalue('()[]{}'), ((), [], {}))
+        self.assertEqual(buildvalue('O', 1), 1)
+        self.assertEqual(buildvalue('(O)', 1), (1,))
+        self.assertEqual(buildvalue('[O]', 1), [1])
+        self.assertRaises(SystemError, buildvalue, '{O}', 1)
+        self.assertEqual(buildvalue('OO', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('(OO)', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('[OO]', 1, 2), [1, 2])
+        self.assertEqual(buildvalue('{OO}', 1, 2), {1: 2})
+        self.assertEqual(buildvalue('{OOOO}', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue('((O))', 1), ((1,),))
+        self.assertEqual(buildvalue('((OO))', 1, 2), ((1, 2),))
+
+        self.assertEqual(buildvalue(' \t,:'), None)
+        self.assertEqual(buildvalue('O,', 1), 1)
+        self.assertEqual(buildvalue('   O   ', 1), 1)
+        self.assertEqual(buildvalue('\tO\t', 1), 1)
+        self.assertEqual(buildvalue('O,O', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O, O', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O,\tO', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O O', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O\tO', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('(O,O)', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('(O, O,)', 1, 2), (1, 2))
+        self.assertEqual(buildvalue(' ( O O ) ', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('\t(\tO\tO\t)\t', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('[O,O]', 1, 2), [1, 2])
+        self.assertEqual(buildvalue('[O, O,]', 1, 2), [1, 2])
+        self.assertEqual(buildvalue(' [ O O ] ', 1, 2), [1, 2])
+        self.assertEqual(buildvalue(' [\tO\tO\t] ', 1, 2), [1, 2])
+        self.assertEqual(buildvalue('{O:O}', 1, 2), {1: 2})
+        self.assertEqual(buildvalue('{O:O,O:O}', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue('{O: O, O: O,}', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue(' { O O O O } ', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue('\t{\tO\tO\tO\tO\t}\t', 1, 2, 3, 4), {1: 2, 3: 4})
+
+        self.assertRaises(SystemError, buildvalue, 'O', NULL)
+        self.assertRaises(SystemError, buildvalue, '(O)', NULL)
+        self.assertRaises(SystemError, buildvalue, '[O]', NULL)
+        self.assertRaises(SystemError, buildvalue, '{O}', NULL)
+        self.assertRaises(SystemError, buildvalue, 'OO', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, 'OO', NULL, 2)
+        self.assertRaises(SystemError, buildvalue, '(OO)', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, '(OO)', NULL, 2)
+        self.assertRaises(SystemError, buildvalue, '[OO]', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, '[OO]', NULL, 2)
+        self.assertRaises(SystemError, buildvalue, '{OO}', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, '{OO}', NULL, 2)
+
+    def test_buildvalue_ints(self):
+        # Test Py_BuildValue() with integer arguments
+        buildvalue = _testcapi.py_buildvalue_ints
+        from _testcapi import SHRT_MIN, SHRT_MAX, USHRT_MAX, INT_MIN, INT_MAX, UINT_MAX
+        self.assertEqual(buildvalue('i', INT_MAX), INT_MAX)
+        self.assertEqual(buildvalue('i', INT_MIN), INT_MIN)
+        self.assertEqual(buildvalue('I', UINT_MAX), UINT_MAX)
+
+        self.assertEqual(buildvalue('h', SHRT_MAX), SHRT_MAX)
+        self.assertEqual(buildvalue('h', SHRT_MIN), SHRT_MIN)
+        self.assertEqual(buildvalue('H', USHRT_MAX), USHRT_MAX)
+
+        self.assertEqual(buildvalue('b', 127), 127)
+        self.assertEqual(buildvalue('b', -128), -128)
+        self.assertEqual(buildvalue('B', 255), 255)
+
+        self.assertEqual(buildvalue('c', ord('A')), b'A')
+        self.assertEqual(buildvalue('c', 255), b'\xff')
+        self.assertEqual(buildvalue('c', 256), b'\x00')
+        self.assertEqual(buildvalue('c', -1), b'\xff')
+
+        self.assertEqual(buildvalue('C', 255), chr(255))
+        self.assertEqual(buildvalue('C', 256), chr(256))
+        self.assertEqual(buildvalue('C', sys.maxunicode), chr(sys.maxunicode))
+        self.assertRaises(ValueError, buildvalue, 'C', -1)
+        self.assertRaises(ValueError, buildvalue, 'C', sys.maxunicode+1)
+
+        # gh-84489
+        self.assertRaises(ValueError, buildvalue, '(C )i', -1, 2)
+        self.assertRaises(ValueError, buildvalue, '[C ]i', -1, 2)
+        self.assertRaises(ValueError, buildvalue, '{Ci }i', -1, 2, 3)
+
     def test_buildvalue_N(self):
         _testcapi.test_buildvalue_N()
 
-    def test_mapping_keys_values_items(self):
-        class Mapping1(dict):
-            def keys(self):
-                return list(super().keys())
-            def values(self):
-                return list(super().values())
-            def items(self):
-                return list(super().items())
-        class Mapping2(dict):
-            def keys(self):
-                return tuple(super().keys())
-            def values(self):
-                return tuple(super().values())
-            def items(self):
-                return tuple(super().items())
-        dict_obj = {'foo': 1, 'bar': 2, 'spam': 3}
-
-        for mapping in [{}, OrderedDict(), Mapping1(), Mapping2(),
-                        dict_obj, OrderedDict(dict_obj),
-                        Mapping1(dict_obj), Mapping2(dict_obj)]:
-            self.assertListEqual(_testcapi.get_mapping_keys(mapping),
-                                 list(mapping.keys()))
-            self.assertListEqual(_testcapi.get_mapping_values(mapping),
-                                 list(mapping.values()))
-            self.assertListEqual(_testcapi.get_mapping_items(mapping),
-                                 list(mapping.items()))
-
-    def test_mapping_keys_values_items_bad_arg(self):
-        self.assertRaises(AttributeError, _testcapi.get_mapping_keys, None)
-        self.assertRaises(AttributeError, _testcapi.get_mapping_values, None)
-        self.assertRaises(AttributeError, _testcapi.get_mapping_items, None)
-
-        class BadMapping:
-            def keys(self):
-                return None
-            def values(self):
-                return None
-            def items(self):
-                return None
-        bad_mapping = BadMapping()
-        self.assertRaises(TypeError, _testcapi.get_mapping_keys, bad_mapping)
-        self.assertRaises(TypeError, _testcapi.get_mapping_values, bad_mapping)
-        self.assertRaises(TypeError, _testcapi.get_mapping_items, bad_mapping)
-
-    def test_mapping_has_key(self):
-        dct = {'a': 1}
-        self.assertTrue(_testcapi.mapping_has_key(dct, 'a'))
-        self.assertFalse(_testcapi.mapping_has_key(dct, 'b'))
-
-        class SubDict(dict):
-            pass
-
-        dct2 = SubDict({'a': 1})
-        self.assertTrue(_testcapi.mapping_has_key(dct2, 'a'))
-        self.assertFalse(_testcapi.mapping_has_key(dct2, 'b'))
-
-    def test_sequence_set_slice(self):
-        # Correct case:
-        data = [1, 2, 3, 4, 5]
-        data_copy = data.copy()
-
-        _testcapi.sequence_set_slice(data, 1, 3, [8, 9])
-        data_copy[1:3] = [8, 9]
-        self.assertEqual(data, data_copy)
-        self.assertEqual(data, [1, 8, 9, 4, 5])
-
-        # Custom class:
-        class Custom:
-            def __setitem__(self, index, value):
-                self.index = index
-                self.value = value
-
-        c = Custom()
-        _testcapi.sequence_set_slice(c, 0, 5, 'abc')
-        self.assertEqual(c.index, slice(0, 5))
-        self.assertEqual(c.value, 'abc')
-
-        # Immutable sequences must raise:
-        bad_seq1 = (1, 2, 3, 4)
-        with self.assertRaises(TypeError):
-            _testcapi.sequence_set_slice(bad_seq1, 1, 3, (8, 9))
-        self.assertEqual(bad_seq1, (1, 2, 3, 4))
-
-        bad_seq2 = 'abcd'
-        with self.assertRaises(TypeError):
-            _testcapi.sequence_set_slice(bad_seq2, 1, 3, 'xy')
-        self.assertEqual(bad_seq2, 'abcd')
-
-        # Not a sequence:
-        with self.assertRaises(TypeError):
-            _testcapi.sequence_set_slice(None, 1, 3, 'xy')
-
-    def test_sequence_del_slice(self):
-        # Correct case:
-        data = [1, 2, 3, 4, 5]
-        data_copy = data.copy()
-
-        _testcapi.sequence_del_slice(data, 1, 3)
-        del data_copy[1:3]
-        self.assertEqual(data, data_copy)
-        self.assertEqual(data, [1, 4, 5])
-
-        # Custom class:
-        class Custom:
-            def __delitem__(self, index):
-                self.index = index
-
-        c = Custom()
-        _testcapi.sequence_del_slice(c, 0, 5)
-        self.assertEqual(c.index, slice(0, 5))
-
-        # Immutable sequences must raise:
-        bad_seq1 = (1, 2, 3, 4)
-        with self.assertRaises(TypeError):
-            _testcapi.sequence_del_slice(bad_seq1, 1, 3)
-        self.assertEqual(bad_seq1, (1, 2, 3, 4))
-
-        bad_seq2 = 'abcd'
-        with self.assertRaises(TypeError):
-            _testcapi.sequence_del_slice(bad_seq2, 1, 3)
-        self.assertEqual(bad_seq2, 'abcd')
-
-        # Not a sequence:
-        with self.assertRaises(TypeError):
-            _testcapi.sequence_del_slice(None, 1, 3)
-
-        mapping = {1: 'a', 2: 'b', 3: 'c'}
-        with self.assertRaises(KeyError):
-            _testcapi.sequence_del_slice(mapping, 1, 3)
-        self.assertEqual(mapping, {1: 'a', 2: 'b', 3: 'c'})
+    def check_negative_refcount(self, code):
+        # bpo-35059: Check that Py_DECREF() reports the correct filename
+        # when calling _Py_NegativeRefcount() to abort Python.
+        code = textwrap.dedent(code)
+        rc, out, err = assert_python_failure('-c', code)
+        self.assertRegex(err,
+                         br'_testcapimodule\.c:[0-9]+: '
+                         br'_Py_NegativeRefcount: Assertion failed: '
+                         br'object has negative ref count')
 
     @unittest.skipUnless(hasattr(_testcapi, 'negative_refcount'),
-                         'need _testcapi.negative_refcount')
+                         'need _testcapi.negative_refcount()')
     def test_negative_refcount(self):
-        # bpo-35059: Check that Py_DECREF() reports the correct filename
-        # when calling _Py_NegativeRefcount() to abort Python.
-        code = textwrap.dedent("""
+        code = """
             import _testcapi
             from test import support
 
             with support.SuppressCrashReport():
                 _testcapi.negative_refcount()
-        """)
-        rc, out, err = assert_python_failure('-c', code)
-        self.assertRegex(err,
-                         br'_testcapimodule\.c:[0-9]+: '
-                         br'_Py_NegativeRefcount: Assertion failed: '
-                         br'object has negative ref count')
+        """
+        self.check_negative_refcount(code)
+
+    @unittest.skipUnless(hasattr(_testcapi, 'decref_freed_object'),
+                         'need _testcapi.decref_freed_object()')
+    @support.skip_if_sanitizer("use after free on purpose",
+                               address=True, memory=True, ub=True)
+    def test_decref_freed_object(self):
+        code = """
+            import _testcapi
+            from test import support
+
+            with support.SuppressCrashReport():
+                _testcapi.decref_freed_object()
+        """
+        self.check_negative_refcount(code)
 
     def test_trashcan_subclass(self):
         # bpo-35983: Check that the trashcan mechanism for "list" is NOT
@@ -671,31 +668,60 @@ def test_heaptype_with_setattro(self):
         self.assertEqual(obj.pvalue, 0)
 
     def test_heaptype_with_custom_metaclass(self):
-        self.assertTrue(issubclass(_testcapi.HeapCTypeMetaclass, type))
-        self.assertTrue(issubclass(_testcapi.HeapCTypeMetaclassCustomNew, type))
+        metaclass = _testcapi.HeapCTypeMetaclass
+        self.assertTrue(issubclass(metaclass, type))
+
+        # Class creation from C
+        t = _testcapi.pytype_fromspec_meta(metaclass)
+        self.assertIsInstance(t, type)
+        self.assertEqual(t.__name__, "HeapCTypeViaMetaclass")
+        self.assertIs(type(t), metaclass)
+
+        # Class creation from Python
+        t = metaclass("PyClassViaMetaclass", (), {})
+        self.assertIsInstance(t, type)
+        self.assertEqual(t.__name__, "PyClassViaMetaclass")
+
+    def test_heaptype_with_custom_metaclass_null_new(self):
+        metaclass = _testcapi.HeapCTypeMetaclassNullNew
+
+        self.assertTrue(issubclass(metaclass, type))
 
-        t = _testcapi.pytype_fromspec_meta(_testcapi.HeapCTypeMetaclass)
+        # Class creation from C
+        t = _testcapi.pytype_fromspec_meta(metaclass)
         self.assertIsInstance(t, type)
         self.assertEqual(t.__name__, "HeapCTypeViaMetaclass")
-        self.assertIs(type(t), _testcapi.HeapCTypeMetaclass)
+        self.assertIs(type(t), metaclass)
+
+        # Class creation from Python
+        with self.assertRaisesRegex(TypeError, "cannot create .* instances"):
+            metaclass("PyClassViaMetaclass", (), {})
+
+    def test_heaptype_with_custom_metaclass_custom_new(self):
+        metaclass = _testcapi.HeapCTypeMetaclassCustomNew
+
+        self.assertTrue(issubclass(_testcapi.HeapCTypeMetaclassCustomNew, type))
 
         msg = "Metaclasses with custom tp_new are not supported."
         with self.assertRaisesRegex(TypeError, msg):
-            t = _testcapi.pytype_fromspec_meta(_testcapi.HeapCTypeMetaclassCustomNew)
+            t = _testcapi.pytype_fromspec_meta(metaclass)
 
     def test_heaptype_with_custom_metaclass_deprecation(self):
+        metaclass = _testcapi.HeapCTypeMetaclassCustomNew
+
         # gh-103968: a metaclass with custom tp_new is deprecated, but still
         # allowed for functions that existed in 3.11
         # (PyType_FromSpecWithBases is used here).
-        class Base(metaclass=_testcapi.HeapCTypeMetaclassCustomNew):
+        class Base(metaclass=metaclass):
             pass
 
+        # Class creation from C
         with warnings_helper.check_warnings(
-                ('.*custom tp_new.*in Python 3.14.*', DeprecationWarning),
+                ('.* _testcapi.Subclass .* custom tp_new.*in Python 3.14.*', DeprecationWarning),
                 ):
             sub = _testcapi.make_type_with_base(Base)
         self.assertTrue(issubclass(sub, Base))
-        self.assertIsInstance(sub, _testcapi.HeapCTypeMetaclassCustomNew)
+        self.assertIsInstance(sub, metaclass)
 
     def test_multiple_inheritance_ctypes_with_weakref_or_dict(self):
 
@@ -1072,6 +1098,21 @@ class Data(_testcapi.ObjExtraData):
         del d.extra
         self.assertIsNone(d.extra)
 
+    def test_get_type_module_name(self):
+        from collections import OrderedDict
+        ht = _testcapi.get_heaptype_for_name()
+        for cls, expected in {
+            int: 'builtins',
+            OrderedDict: 'collections',
+            ht: '_testcapi',
+        }.items():
+            with self.subTest(repr(cls)):
+                modname = _testinternalcapi.get_type_module_name(cls)
+                self.assertEqual(modname, expected)
+
+        ht.__module__ = 'test_module'
+        modname = _testinternalcapi.get_type_module_name(ht)
+        self.assertEqual(modname, 'test_module')
 
 @requires_limited_api
 class TestHeapTypeRelative(unittest.TestCase):
@@ -1230,6 +1271,10 @@ def test_pyobject_getitemdata_error(self):
 
 class TestPendingCalls(unittest.TestCase):
 
+    # See the comment in ceval.c (at the "handle_eval_breaker" label)
+    # about when pending calls get run.  This is especially relevant
+    # here for creating deterministic tests.
+
     def pendingcalls_submit(self, l, n):
         def callback():
             #this function can be interrupted by thread switching so let's
@@ -1312,6 +1357,390 @@ def genf(): yield
         gen = genf()
         self.assertEqual(_testcapi.gen_get_code(gen), gen.gi_code)
 
+    class PendingTask(types.SimpleNamespace):
+
+        _add_pending = _testinternalcapi.pending_threadfunc
+
+        def __init__(self, req, taskid=None, notify_done=None):
+            self.id = taskid
+            self.req = req
+            self.notify_done = notify_done
+
+            self.creator_tid = threading.get_ident()
+            self.requester_tid = None
+            self.runner_tid = None
+            self.result = None
+
+        def run(self):
+            assert self.result is None
+            self.runner_tid = threading.get_ident()
+            self._run()
+            if self.notify_done is not None:
+                self.notify_done()
+
+        def _run(self):
+            self.result = self.req
+
+        def run_in_pending_call(self, worker_tids):
+            assert self._add_pending is _testinternalcapi.pending_threadfunc
+            self.requester_tid = threading.get_ident()
+            def callback():
+                assert self.result is None
+                # It can be tricky to control which thread handles
+                # the eval breaker, so we take a naive approach to
+                # make sure.
+                if threading.get_ident() not in worker_tids:
+                    self._add_pending(callback, ensure_added=True)
+                    return
+                self.run()
+            self._add_pending(callback, ensure_added=True)
+
+        def create_thread(self, worker_tids):
+            return threading.Thread(
+                target=self.run_in_pending_call,
+                args=(worker_tids,),
+            )
+
+        def wait_for_result(self):
+            while self.result is None:
+                time.sleep(0.01)
+
+    @threading_helper.requires_working_threading()
+    def test_subthreads_can_handle_pending_calls(self):
+        payload = 'Spam spam spam spam. Lovely spam! Wonderful spam!'
+
+        task = self.PendingTask(payload)
+        def do_the_work():
+            tid = threading.get_ident()
+            t = task.create_thread({tid})
+            with threading_helper.start_threads([t]):
+                task.wait_for_result()
+        t = threading.Thread(target=do_the_work)
+        with threading_helper.start_threads([t]):
+            pass
+
+        self.assertEqual(task.result, payload)
+
+    @threading_helper.requires_working_threading()
+    def test_many_subthreads_can_handle_pending_calls(self):
+        main_tid = threading.get_ident()
+        self.assertEqual(threading.main_thread().ident, main_tid)
+
+        # We can't use queue.Queue since it isn't reentrant relative
+        # to pending calls.
+        _queue = deque()
+        _active = deque()
+        _done_lock = threading.Lock()
+        def queue_put(task):
+            _queue.append(task)
+            _active.append(True)
+        def queue_get():
+            try:
+                task = _queue.popleft()
+            except IndexError:
+                raise queue.Empty
+            return task
+        def queue_task_done():
+            _active.pop()
+            if not _active:
+                try:
+                    _done_lock.release()
+                except RuntimeError:
+                    assert not _done_lock.locked()
+        def queue_empty():
+            return not _queue
+        def queue_join():
+            _done_lock.acquire()
+            _done_lock.release()
+
+        tasks = []
+        for i in range(20):
+            task = self.PendingTask(
+                req=f'request {i}',
+                taskid=i,
+                notify_done=queue_task_done,
+            )
+            tasks.append(task)
+            queue_put(task)
+        # This will be released once all the tasks have finished.
+        _done_lock.acquire()
+
+        def add_tasks(worker_tids):
+            while True:
+                if done:
+                    return
+                try:
+                    task = queue_get()
+                except queue.Empty:
+                    break
+                task.run_in_pending_call(worker_tids)
+
+        done = False
+        def run_tasks():
+            while not queue_empty():
+                if done:
+                    return
+                time.sleep(0.01)
+            # Give the worker a chance to handle any remaining pending calls.
+            while not done:
+                time.sleep(0.01)
+
+        # Start the workers and wait for them to finish.
+        worker_threads = [threading.Thread(target=run_tasks)
+                          for _ in range(3)]
+        with threading_helper.start_threads(worker_threads):
+            try:
+                # Add a pending call for each task.
+                worker_tids = [t.ident for t in worker_threads]
+                threads = [threading.Thread(target=add_tasks, args=(worker_tids,))
+                           for _ in range(3)]
+                with threading_helper.start_threads(threads):
+                    try:
+                        pass
+                    except BaseException:
+                        done = True
+                        raise  # re-raise
+                # Wait for the pending calls to finish.
+                queue_join()
+                # Notify the workers that they can stop.
+                done = True
+            except BaseException:
+                done = True
+                raise  # re-raise
+        runner_tids = [t.runner_tid for t in tasks]
+
+        self.assertNotIn(main_tid, runner_tids)
+        for task in tasks:
+            with self.subTest(f'task {task.id}'):
+                self.assertNotEqual(task.requester_tid, main_tid)
+                self.assertNotEqual(task.requester_tid, task.runner_tid)
+                self.assertNotIn(task.requester_tid, runner_tids)
+
+    @requires_subinterpreters
+    def test_isolated_subinterpreter(self):
+        # We exercise the most important permutations.
+
+        # This test relies on pending calls getting called
+        # (eval breaker tripped) at each loop iteration
+        # and at each call.
+
+        maxtext = 250
+        main_interpid = 0
+        interpid = _interpreters.create()
+        _interpreters.run_string(interpid, f"""if True:
+            import json
+            import os
+            import threading
+            import time
+            import _testinternalcapi
+            from test.support import threading_helper
+            """)
+
+        def create_pipe():
+            r, w = os.pipe()
+            self.addCleanup(lambda: os.close(r))
+            self.addCleanup(lambda: os.close(w))
+            return r, w
+
+        with self.subTest('add in main, run in subinterpreter'):
+            r_ready, w_ready = create_pipe()
+            r_done, w_done= create_pipe()
+            timeout = time.time() + 30  # seconds
+
+            def do_work():
+                _interpreters.run_string(interpid, f"""if True:
+                    # Wait until this interp has handled the pending call.
+                    waiting = False
+                    done = False
+                    def wait(os_read=os.read):
+                        global done, waiting
+                        waiting = True
+                        os_read({r_done}, 1)
+                        done = True
+                    t = threading.Thread(target=wait)
+                    with threading_helper.start_threads([t]):
+                        while not waiting:
+                            pass
+                        os.write({w_ready}, b'\\0')
+                        # Loop to trigger the eval breaker.
+                        while not done:
+                            time.sleep(0.01)
+                            if time.time() > {timeout}:
+                                raise Exception('timed out!')
+                    """)
+            t = threading.Thread(target=do_work)
+            with threading_helper.start_threads([t]):
+                os.read(r_ready, 1)
+                # Add the pending call and wait for it to finish.
+                actual = _testinternalcapi.pending_identify(interpid)
+                # Signal the subinterpreter to stop.
+                os.write(w_done, b'\0')
+
+            self.assertEqual(actual, int(interpid))
+
+        with self.subTest('add in main, run in subinterpreter sub-thread'):
+            r_ready, w_ready = create_pipe()
+            r_done, w_done= create_pipe()
+            timeout = time.time() + 30  # seconds
+
+            def do_work():
+                _interpreters.run_string(interpid, f"""if True:
+                    waiting = False
+                    done = False
+                    def subthread():
+                        while not waiting:
+                            pass
+                        os.write({w_ready}, b'\\0')
+                        # Loop to trigger the eval breaker.
+                        while not done:
+                            time.sleep(0.01)
+                            if time.time() > {timeout}:
+                                raise Exception('timed out!')
+                    t = threading.Thread(target=subthread)
+                    with threading_helper.start_threads([t]):
+                        # Wait until this interp has handled the pending call.
+                        waiting = True
+                        os.read({r_done}, 1)
+                        done = True
+                    """)
+            t = threading.Thread(target=do_work)
+            with threading_helper.start_threads([t]):
+                os.read(r_ready, 1)
+                # Add the pending call and wait for it to finish.
+                actual = _testinternalcapi.pending_identify(interpid)
+                # Signal the subinterpreter to stop.
+                os.write(w_done, b'\0')
+
+            self.assertEqual(actual, int(interpid))
+
+        with self.subTest('add in subinterpreter, run in main'):
+            r_ready, w_ready = create_pipe()
+            r_done, w_done= create_pipe()
+            r_data, w_data= create_pipe()
+            timeout = time.time() + 30  # seconds
+
+            def add_job():
+                os.read(r_ready, 1)
+                _interpreters.run_string(interpid, f"""if True:
+                    # Add the pending call and wait for it to finish.
+                    actual = _testinternalcapi.pending_identify({main_interpid})
+                    # Signal the subinterpreter to stop.
+                    os.write({w_done}, b'\\0')
+                    os.write({w_data}, actual.to_bytes(1, 'little'))
+                    """)
+            # Wait until this interp has handled the pending call.
+            waiting = False
+            done = False
+            def wait(os_read=os.read):
+                nonlocal done, waiting
+                waiting = True
+                os_read(r_done, 1)
+                done = True
+            t1 = threading.Thread(target=add_job)
+            t2 = threading.Thread(target=wait)
+            with threading_helper.start_threads([t1, t2]):
+                while not waiting:
+                    pass
+                os.write(w_ready, b'\0')
+                # Loop to trigger the eval breaker.
+                while not done:
+                    time.sleep(0.01)
+                    if time.time() > timeout:
+                        raise Exception('timed out!')
+                text = os.read(r_data, 1)
+            actual = int.from_bytes(text, 'little')
+
+            self.assertEqual(actual, int(main_interpid))
+
+        with self.subTest('add in subinterpreter, run in sub-thread'):
+            r_ready, w_ready = create_pipe()
+            r_done, w_done= create_pipe()
+            r_data, w_data= create_pipe()
+            timeout = time.time() + 30  # seconds
+
+            def add_job():
+                os.read(r_ready, 1)
+                _interpreters.run_string(interpid, f"""if True:
+                    # Add the pending call and wait for it to finish.
+                    actual = _testinternalcapi.pending_identify({main_interpid})
+                    # Signal the subinterpreter to stop.
+                    os.write({w_done}, b'\\0')
+                    os.write({w_data}, actual.to_bytes(1, 'little'))
+                    """)
+            # Wait until this interp has handled the pending call.
+            waiting = False
+            done = False
+            def wait(os_read=os.read):
+                nonlocal done, waiting
+                waiting = True
+                os_read(r_done, 1)
+                done = True
+            def subthread():
+                while not waiting:
+                    pass
+                os.write(w_ready, b'\0')
+                # Loop to trigger the eval breaker.
+                while not done:
+                    time.sleep(0.01)
+                    if time.time() > timeout:
+                        raise Exception('timed out!')
+            t1 = threading.Thread(target=add_job)
+            t2 = threading.Thread(target=wait)
+            t3 = threading.Thread(target=subthread)
+            with threading_helper.start_threads([t1, t2, t3]):
+                pass
+            text = os.read(r_data, 1)
+            actual = int.from_bytes(text, 'little')
+
+            self.assertEqual(actual, int(main_interpid))
+
+        # XXX We can't use the rest until gh-105716 is fixed.
+        return
+
+        with self.subTest('add in subinterpreter, run in subinterpreter sub-thread'):
+            r_ready, w_ready = create_pipe()
+            r_done, w_done= create_pipe()
+            r_data, w_data= create_pipe()
+            timeout = time.time() + 30  # seconds
+
+            def do_work():
+                _interpreters.run_string(interpid, f"""if True:
+                    waiting = False
+                    done = False
+                    def subthread():
+                        while not waiting:
+                            pass
+                        os.write({w_ready}, b'\\0')
+                        # Loop to trigger the eval breaker.
+                        while not done:
+                            time.sleep(0.01)
+                            if time.time() > {timeout}:
+                                raise Exception('timed out!')
+                    t = threading.Thread(target=subthread)
+                    with threading_helper.start_threads([t]):
+                        # Wait until this interp has handled the pending call.
+                        waiting = True
+                        os.read({r_done}, 1)
+                        done = True
+                    """)
+            t = threading.Thread(target=do_work)
+            #with threading_helper.start_threads([t]):
+            t.start()
+            if True:
+                os.read(r_ready, 1)
+                _interpreters.run_string(interpid, f"""if True:
+                    # Add the pending call and wait for it to finish.
+                    actual = _testinternalcapi.pending_identify({interpid})
+                    # Signal the subinterpreter to stop.
+                    os.write({w_done}, b'\\0')
+                    os.write({w_data}, actual.to_bytes(1, 'little'))
+                    """)
+            t.join()
+            text = os.read(r_data, 1)
+            actual = int.from_bytes(text, 'little')
+
+            self.assertEqual(actual, int(interpid))
+
 
 class SubinterpreterTest(unittest.TestCase):
 
@@ -1393,7 +1822,6 @@ def test_configured_settings(self):
         1-to-1 with the new interpreter's settings.  This test verifies
         that they match.
         """
-        import json
 
         OBMALLOC = 1<<5
         EXTENSIONS = 1<<8
@@ -1472,7 +1900,6 @@ def test_overridden_setting_extensions_subinterp_check(self):
         This verifies that the override works but does not modify
         the underlying setting.
         """
-        import json
 
         OBMALLOC = 1<<5
         EXTENSIONS = 1<<8
@@ -1593,6 +2020,74 @@ def test_module_state_shared_in_global(self):
         self.assertEqual(main_attr_id, subinterp_attr_id)
 
 
+class BuiltinStaticTypesTests(unittest.TestCase):
+
+    TYPES = [
+        object,
+        type,
+        int,
+        str,
+        dict,
+        type(None),
+        bool,
+        BaseException,
+        Exception,
+        Warning,
+        DeprecationWarning,  # Warning subclass
+    ]
+
+    def test_tp_bases_is_set(self):
+        # PyTypeObject.tp_bases is documented as public API.
+        # See https://github.com/python/cpython/issues/105020.
+        for typeobj in self.TYPES:
+            with self.subTest(typeobj):
+                bases = _testcapi.type_get_tp_bases(typeobj)
+                self.assertIsNot(bases, None)
+
+    def test_tp_mro_is_set(self):
+        # PyTypeObject.tp_bases is documented as public API.
+        # See https://github.com/python/cpython/issues/105020.
+        for typeobj in self.TYPES:
+            with self.subTest(typeobj):
+                mro = _testcapi.type_get_tp_mro(typeobj)
+                self.assertIsNot(mro, None)
+
+
+class TestStaticTypes(unittest.TestCase):
+
+    _has_run = False
+
+    @classmethod
+    def setUpClass(cls):
+        # The tests here don't play nice with our approach to refleak
+        # detection, so we bail out in that case.
+        if cls._has_run:
+            raise unittest.SkipTest('these tests do not support re-running')
+        cls._has_run = True
+
+    @contextlib.contextmanager
+    def basic_static_type(self, *args):
+        cls = _testcapi.get_basic_static_type(*args)
+        yield cls
+
+    def test_pytype_ready_always_sets_tp_type(self):
+        # The point of this test is to prevent something like
+        # https://github.com/python/cpython/issues/104614
+        # from happening again.
+
+        # First check when tp_base/tp_bases is *not* set before PyType_Ready().
+        with self.basic_static_type() as cls:
+            self.assertIs(cls.__base__, object);
+            self.assertEqual(cls.__bases__, (object,));
+            self.assertIs(type(cls), type(object));
+
+        # Then check when we *do* set tp_base/tp_bases first.
+        with self.basic_static_type(object) as cls:
+            self.assertIs(cls.__base__, object);
+            self.assertEqual(cls.__bases__, (object,));
+            self.assertIs(type(cls), type(object));
+
+
 class TestThreadState(unittest.TestCase):
 
     @threading_helper.reap_threads
@@ -1639,7 +2134,7 @@ def test_gilstate_matches_current(self):
 class Test_testcapi(unittest.TestCase):
     locals().update((name, getattr(_testcapi, name))
                     for name in dir(_testcapi)
-                    if name.startswith('test_') and not name.endswith('_code'))
+                    if name.startswith('test_'))
 
     # Suppress warning from PyUnicode_FromUnicode().
     @warnings_helper.ignore_warnings(category=DeprecationWarning)
@@ -1653,7 +2148,15 @@ def test_version_api_data(self):
 class Test_testinternalcapi(unittest.TestCase):
     locals().update((name, getattr(_testinternalcapi, name))
                     for name in dir(_testinternalcapi)
-                    if name.startswith('test_'))
+                    if name.startswith('test_')
+                    and not name.startswith('test_lock_'))
+
+
+@threading_helper.requires_working_threading()
+class Test_PyLock(unittest.TestCase):
+    locals().update((name, getattr(_testinternalcapi, name))
+                    for name in dir(_testinternalcapi)
+                    if name.startswith('test_lock_'))
 
 
 @unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
@@ -1744,6 +2247,30 @@ class Subclass(BaseException, self.module.StateAccessType):
         self.assertIs(Subclass().get_defining_module(), self.module)
 
 
+class TestInternalFrameApi(unittest.TestCase):
+
+    @staticmethod
+    def func():
+        return sys._getframe()
+
+    def test_code(self):
+        frame = self.func()
+        code = _testinternalcapi.iframe_getcode(frame)
+        self.assertIs(code, self.func.__code__)
+
+    def test_lasti(self):
+        frame = self.func()
+        lasti = _testinternalcapi.iframe_getlasti(frame)
+        self.assertGreater(lasti, 0)
+        self.assertLess(lasti, len(self.func.__code__.co_code))
+
+    def test_line(self):
+        frame = self.func()
+        line = _testinternalcapi.iframe_getline(frame)
+        firstline = self.func.__code__.co_firstlineno
+        self.assertEqual(line, firstline + 2)
+
+
 SUFFICIENT_TO_DEOPT_AND_SPECIALIZE = 100
 
 class Test_Pep523API(unittest.TestCase):
@@ -1824,5 +2351,563 @@ def func():
         self.do_test(func, names)
 
 
+@contextlib.contextmanager
+def temporary_optimizer(opt):
+    old_opt = _testinternalcapi.get_optimizer()
+    _testinternalcapi.set_optimizer(opt)
+    try:
+        yield
+    finally:
+        _testinternalcapi.set_optimizer(old_opt)
+
+
+@contextlib.contextmanager
+def clear_executors(func):
+    # Clear executors in func before and after running a block
+    func.__code__ = func.__code__.replace()
+    try:
+        yield
+    finally:
+        func.__code__ = func.__code__.replace()
+
+
+class TestOptimizerAPI(unittest.TestCase):
+
+    def test_get_counter_optimizer_dealloc(self):
+        # See gh-108727
+        def f():
+            _testinternalcapi.get_counter_optimizer()
+
+        f()
+
+    def test_get_set_optimizer(self):
+        old = _testinternalcapi.get_optimizer()
+        opt = _testinternalcapi.get_counter_optimizer()
+        try:
+            _testinternalcapi.set_optimizer(opt)
+            self.assertEqual(_testinternalcapi.get_optimizer(), opt)
+            _testinternalcapi.set_optimizer(None)
+            self.assertEqual(_testinternalcapi.get_optimizer(), None)
+        finally:
+            _testinternalcapi.set_optimizer(old)
+
+
+    def test_counter_optimizer(self):
+        # Generate a new function at each call
+        ns = {}
+        exec(textwrap.dedent("""
+            def loop():
+                for _ in range(1000):
+                    pass
+        """), ns, ns)
+        loop = ns['loop']
+
+        for repeat in range(5):
+            opt = _testinternalcapi.get_counter_optimizer()
+            with temporary_optimizer(opt):
+                self.assertEqual(opt.get_count(), 0)
+                with clear_executors(loop):
+                    loop()
+                self.assertEqual(opt.get_count(), 1000)
+
+    def test_long_loop(self):
+        "Check that we aren't confused by EXTENDED_ARG"
+
+        # Generate a new function at each call
+        ns = {}
+        exec(textwrap.dedent("""
+            def nop():
+                pass
+
+            def long_loop():
+                for _ in range(10):
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+                    nop(); nop(); nop(); nop(); nop(); nop(); nop(); nop();
+        """), ns, ns)
+        long_loop = ns['long_loop']
+
+        opt = _testinternalcapi.get_counter_optimizer()
+        with temporary_optimizer(opt):
+            self.assertEqual(opt.get_count(), 0)
+            long_loop()
+            self.assertEqual(opt.get_count(), 10)
+
+    def test_code_restore_for_ENTER_EXECUTOR(self):
+        def testfunc(x):
+            i = 0
+            while i < x:
+                i += 1
+
+        opt = _testinternalcapi.get_counter_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(1000)
+            code, replace_code  = testfunc.__code__, testfunc.__code__.replace()
+            self.assertEqual(code, replace_code)
+            self.assertEqual(hash(code), hash(replace_code))
+
+
+def get_first_executor(func):
+    code = func.__code__
+    co_code = code.co_code
+    JUMP_BACKWARD = opcode.opmap["JUMP_BACKWARD"]
+    for i in range(0, len(co_code), 2):
+        if co_code[i] == JUMP_BACKWARD:
+            try:
+                return _testinternalcapi.get_executor(code, i)
+            except ValueError:
+                pass
+    return None
+
+
+class TestExecutorInvalidation(unittest.TestCase):
+
+    def setUp(self):
+        self.old = _testinternalcapi.get_optimizer()
+        self.opt = _testinternalcapi.get_counter_optimizer()
+        _testinternalcapi.set_optimizer(self.opt)
+
+    def tearDown(self):
+        _testinternalcapi.set_optimizer(self.old)
+
+    def test_invalidate_object(self):
+        # Generate a new set of functions at each call
+        ns = {}
+        func_src = "\n".join(
+            f"""
+            def f{n}():
+                for _ in range(1000):
+                    pass
+            """ for n in range(5)
+        )
+        exec(textwrap.dedent(func_src), ns, ns)
+        funcs = [ ns[f'f{n}'] for n in range(5)]
+        objects = [object() for _ in range(5)]
+
+        for f in funcs:
+            f()
+        executors = [get_first_executor(f) for f in funcs]
+        # Set things up so each executor depends on the objects
+        # with an equal or lower index.
+        for i, exe in enumerate(executors):
+            self.assertTrue(exe.is_valid())
+            for obj in objects[:i+1]:
+                _testinternalcapi.add_executor_dependency(exe, obj)
+            self.assertTrue(exe.is_valid())
+        # Assert that the correct executors are invalidated
+        # and check that nothing crashes when we invalidate
+        # an executor mutliple times.
+        for i in (4,3,2,1,0):
+            _testinternalcapi.invalidate_executors(objects[i])
+            for exe in executors[i:]:
+                self.assertFalse(exe.is_valid())
+            for exe in executors[:i]:
+                self.assertTrue(exe.is_valid())
+
+    def test_uop_optimizer_invalidation(self):
+        # Generate a new function at each call
+        ns = {}
+        exec(textwrap.dedent("""
+            def f():
+                for i in range(1000):
+                    pass
+        """), ns, ns)
+        f = ns['f']
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            f()
+        exe = get_first_executor(f)
+        self.assertTrue(exe.is_valid())
+        _testinternalcapi.invalidate_executors(f.__code__)
+        self.assertFalse(exe.is_valid())
+
+class TestUops(unittest.TestCase):
+
+    def test_basic_loop(self):
+        def testfunc(x):
+            i = 0
+            while i < x:
+                i += 1
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(1000)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_SET_IP", uops)
+        self.assertIn("LOAD_FAST", uops)
+
+    def test_extended_arg(self):
+        "Check EXTENDED_ARG handling in superblock creation"
+        ns = {}
+        exec(textwrap.dedent("""
+            def many_vars():
+                # 260 vars, so z9 should have index 259
+                a0 = a1 = a2 = a3 = a4 = a5 = a6 = a7 = a8 = a9 = 42
+                b0 = b1 = b2 = b3 = b4 = b5 = b6 = b7 = b8 = b9 = 42
+                c0 = c1 = c2 = c3 = c4 = c5 = c6 = c7 = c8 = c9 = 42
+                d0 = d1 = d2 = d3 = d4 = d5 = d6 = d7 = d8 = d9 = 42
+                e0 = e1 = e2 = e3 = e4 = e5 = e6 = e7 = e8 = e9 = 42
+                f0 = f1 = f2 = f3 = f4 = f5 = f6 = f7 = f8 = f9 = 42
+                g0 = g1 = g2 = g3 = g4 = g5 = g6 = g7 = g8 = g9 = 42
+                h0 = h1 = h2 = h3 = h4 = h5 = h6 = h7 = h8 = h9 = 42
+                i0 = i1 = i2 = i3 = i4 = i5 = i6 = i7 = i8 = i9 = 42
+                j0 = j1 = j2 = j3 = j4 = j5 = j6 = j7 = j8 = j9 = 42
+                k0 = k1 = k2 = k3 = k4 = k5 = k6 = k7 = k8 = k9 = 42
+                l0 = l1 = l2 = l3 = l4 = l5 = l6 = l7 = l8 = l9 = 42
+                m0 = m1 = m2 = m3 = m4 = m5 = m6 = m7 = m8 = m9 = 42
+                n0 = n1 = n2 = n3 = n4 = n5 = n6 = n7 = n8 = n9 = 42
+                o0 = o1 = o2 = o3 = o4 = o5 = o6 = o7 = o8 = o9 = 42
+                p0 = p1 = p2 = p3 = p4 = p5 = p6 = p7 = p8 = p9 = 42
+                q0 = q1 = q2 = q3 = q4 = q5 = q6 = q7 = q8 = q9 = 42
+                r0 = r1 = r2 = r3 = r4 = r5 = r6 = r7 = r8 = r9 = 42
+                s0 = s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = s9 = 42
+                t0 = t1 = t2 = t3 = t4 = t5 = t6 = t7 = t8 = t9 = 42
+                u0 = u1 = u2 = u3 = u4 = u5 = u6 = u7 = u8 = u9 = 42
+                v0 = v1 = v2 = v3 = v4 = v5 = v6 = v7 = v8 = v9 = 42
+                w0 = w1 = w2 = w3 = w4 = w5 = w6 = w7 = w8 = w9 = 42
+                x0 = x1 = x2 = x3 = x4 = x5 = x6 = x7 = x8 = x9 = 42
+                y0 = y1 = y2 = y3 = y4 = y5 = y6 = y7 = y8 = y9 = 42
+                z0 = z1 = z2 = z3 = z4 = z5 = z6 = z7 = z8 = z9 = 42
+                while z9 > 0:
+                    z9 = z9 - 1
+        """), ns, ns)
+        many_vars = ns["many_vars"]
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            ex = get_first_executor(many_vars)
+            self.assertIsNone(ex)
+            many_vars()
+
+        ex = get_first_executor(many_vars)
+        self.assertIsNotNone(ex)
+        self.assertIn(("LOAD_FAST", 259, 0), list(ex))
+
+    def test_unspecialized_unpack(self):
+        # An example of an unspecialized opcode
+        def testfunc(x):
+            i = 0
+            while i < x:
+                i += 1
+                a, b = {1: 2, 3: 3}
+            assert a == 1 and b == 3
+            i = 0
+            while i < x:
+                i += 1
+
+        opt = _testinternalcapi.get_uop_optimizer()
+
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_UNPACK_SEQUENCE", uops)
+
+    def test_pop_jump_if_false(self):
+        def testfunc(n):
+            i = 0
+            while i < n:
+                i += 1
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_IS_TRUE_POP", uops)
+
+    def test_pop_jump_if_none(self):
+        def testfunc(a):
+            for x in a:
+                if x is None:
+                    x = 0
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(range(20))
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_IS_NOT_NONE_POP", uops)
+
+    def test_pop_jump_if_not_none(self):
+        def testfunc(a):
+            for x in a:
+                x = None
+                if x is not None:
+                    x = 0
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(range(20))
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_IS_NONE_POP", uops)
+
+    def test_pop_jump_if_true(self):
+        def testfunc(n):
+            i = 0
+            while not i >= n:
+                i += 1
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_IS_FALSE_POP", uops)
+
+    def test_jump_backward(self):
+        def testfunc(n):
+            i = 0
+            while i < n:
+                i += 1
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_JUMP_TO_TOP", uops)
+
+    def test_jump_forward(self):
+        def testfunc(n):
+            a = 0
+            while a < n:
+                if a < 0:
+                    a = -a
+                else:
+                    a = +a
+                a += 1
+            return a
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        # Since there is no JUMP_FORWARD instruction,
+        # look for indirect evidence: the += operator
+        self.assertIn("_BINARY_OP_ADD_INT", uops)
+
+    def test_for_iter_range(self):
+        def testfunc(n):
+            total = 0
+            for i in range(n):
+                total += i
+            return total
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            total = testfunc(20)
+            self.assertEqual(total, 190)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        # for i, (opname, oparg) in enumerate(ex):
+        #     print(f"{i:4d}: {opname:<20s} {oparg:3d}")
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_NOT_EXHAUSTED_RANGE", uops)
+        # Verification that the jump goes past END_FOR
+        # is done by manual inspection of the output
+
+    def test_for_iter_list(self):
+        def testfunc(a):
+            total = 0
+            for i in a:
+                total += i
+            return total
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            a = list(range(20))
+            total = testfunc(a)
+            self.assertEqual(total, 190)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        # for i, (opname, oparg) in enumerate(ex):
+        #     print(f"{i:4d}: {opname:<20s} {oparg:3d}")
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_NOT_EXHAUSTED_LIST", uops)
+        # Verification that the jump goes past END_FOR
+        # is done by manual inspection of the output
+
+    def test_for_iter_tuple(self):
+        def testfunc(a):
+            total = 0
+            for i in a:
+                total += i
+            return total
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            a = tuple(range(20))
+            total = testfunc(a)
+            self.assertEqual(total, 190)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        # for i, (opname, oparg) in enumerate(ex):
+        #     print(f"{i:4d}: {opname:<20s} {oparg:3d}")
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_NOT_EXHAUSTED_TUPLE", uops)
+        # Verification that the jump goes past END_FOR
+        # is done by manual inspection of the output
+
+    def test_list_edge_case(self):
+        def testfunc(it):
+            for x in it:
+                pass
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            a = [1, 2, 3]
+            it = iter(a)
+            testfunc(it)
+            a.append(4)
+            with self.assertRaises(StopIteration):
+                next(it)
+
+    def test_call_py_exact_args(self):
+        def testfunc(n):
+            def dummy(x):
+                return x+1
+            for i in range(n):
+                dummy(i)
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_PUSH_FRAME", uops)
+        self.assertIn("_BINARY_OP_ADD_INT", uops)
+
+    def test_branch_taken(self):
+        def testfunc(n):
+            for i in range(n):
+                if i < 0:
+                    i = 0
+                else:
+                    i = 1
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            testfunc(20)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_GUARD_IS_FALSE_POP", uops)
+
+    def test_for_iter_tier_two(self):
+        class MyIter:
+            def __init__(self, n):
+                self.n = n
+            def __iter__(self):
+                return self
+            def __next__(self):
+                self.n -= 1
+                if self.n < 0:
+                    raise StopIteration
+                return self.n
+
+        def testfunc(n, m):
+            x = 0
+            for i in range(m):
+                for j in MyIter(n):
+                    x += 1000*i + j
+            return x
+
+        opt = _testinternalcapi.get_uop_optimizer()
+        with temporary_optimizer(opt):
+            x = testfunc(10, 10)
+
+        self.assertEqual(x, sum(range(10)) * 10010)
+
+        ex = get_first_executor(testfunc)
+        self.assertIsNotNone(ex)
+        uops = {opname for opname, _, _ in ex}
+        self.assertIn("_FOR_ITER_TIER_TWO", uops)
+
+
+@unittest.skipUnless(support.Py_GIL_DISABLED, 'need Py_GIL_DISABLED')
+class TestPyThreadId(unittest.TestCase):
+    def test_py_thread_id(self):
+        # gh-112535: Test _Py_ThreadId(): make sure that thread identifiers
+        # in a few threads are unique
+        py_thread_id = _testinternalcapi.py_thread_id
+        short_sleep = 0.010
+
+        class GetThreadId(threading.Thread):
+            def __init__(self):
+                super().__init__()
+                self.get_lock = threading.Lock()
+                self.get_lock.acquire()
+                self.started_lock = threading.Event()
+                self.py_tid = None
+
+            def run(self):
+                self.started_lock.set()
+                self.get_lock.acquire()
+                self.py_tid = py_thread_id()
+                time.sleep(short_sleep)
+                self.py_tid2 = py_thread_id()
+
+        nthread = 5
+        threads = [GetThreadId() for _ in range(nthread)]
+
+        # first make run sure that all threads are running
+        for thread in threads:
+            thread.start()
+        for thread in threads:
+            thread.started_lock.wait()
+
+        # call _Py_ThreadId() in the main thread
+        py_thread_ids = [py_thread_id()]
+
+        # now call _Py_ThreadId() in each thread
+        for thread in threads:
+            thread.get_lock.release()
+
+        # call _Py_ThreadId() in each thread and wait until threads complete
+        for thread in threads:
+            thread.join()
+            py_thread_ids.append(thread.py_tid)
+            # _PyThread_Id() should not change for a given thread.
+            # For example, it should remain the same after a short sleep.
+            self.assertEqual(thread.py_tid2, thread.py_tid)
+
+        # make sure that all _Py_ThreadId() are unique
+        for tid in py_thread_ids:
+            self.assertIsInstance(tid, int)
+            self.assertGreater(tid, 0)
+        self.assertEqual(len(set(py_thread_ids)), len(py_thread_ids),
+                         py_thread_ids)
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_capi/test_pyatomic.py b/Lib/test/test_capi/test_pyatomic.py
new file mode 100644
index 00000000000000..846d6d50c25969
--- /dev/null
+++ b/Lib/test/test_capi/test_pyatomic.py
@@ -0,0 +1,15 @@
+import unittest
+from test.support import import_helper
+
+# Skip this test if the _testcapi module isn't available.
+_testcapi = import_helper.import_module('_testcapi')
+
+class PyAtomicTests(unittest.TestCase):
+    pass
+
+for name in sorted(dir(_testcapi)):
+    if name.startswith('test_atomic'):
+        setattr(PyAtomicTests, name, getattr(_testcapi, name))
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_set.py b/Lib/test/test_capi/test_set.py
new file mode 100644
index 00000000000000..5235f81543e0b6
--- /dev/null
+++ b/Lib/test/test_capi/test_set.py
@@ -0,0 +1,265 @@
+import unittest
+
+from test.support import import_helper
+
+# Skip this test if the _testcapi or _testinternalcapi modules aren't available.
+_testcapi = import_helper.import_module('_testcapi')
+_testinternalcapi = import_helper.import_module('_testinternalcapi')
+
+class set_subclass(set):
+    pass
+
+class frozenset_subclass(frozenset):
+    pass
+
+
+class BaseSetTests:
+    def assertImmutable(self, action, *args):
+        self.assertRaises(SystemError, action, frozenset(), *args)
+        self.assertRaises(SystemError, action, frozenset({1}), *args)
+        self.assertRaises(SystemError, action, frozenset_subclass(), *args)
+        self.assertRaises(SystemError, action, frozenset_subclass({1}), *args)
+
+
+class TestSetCAPI(BaseSetTests, unittest.TestCase):
+    def test_set_check(self):
+        check = _testcapi.set_check
+        self.assertTrue(check(set()))
+        self.assertTrue(check({1, 2}))
+        self.assertFalse(check(frozenset()))
+        self.assertTrue(check(set_subclass()))
+        self.assertFalse(check(frozenset_subclass()))
+        self.assertFalse(check(object()))
+        # CRASHES: check(NULL)
+
+    def test_set_check_exact(self):
+        check = _testcapi.set_checkexact
+        self.assertTrue(check(set()))
+        self.assertTrue(check({1, 2}))
+        self.assertFalse(check(frozenset()))
+        self.assertFalse(check(set_subclass()))
+        self.assertFalse(check(frozenset_subclass()))
+        self.assertFalse(check(object()))
+        # CRASHES: check(NULL)
+
+    def test_frozenset_check(self):
+        check = _testcapi.frozenset_check
+        self.assertFalse(check(set()))
+        self.assertTrue(check(frozenset()))
+        self.assertTrue(check(frozenset({1, 2})))
+        self.assertFalse(check(set_subclass()))
+        self.assertTrue(check(frozenset_subclass()))
+        self.assertFalse(check(object()))
+        # CRASHES: check(NULL)
+
+    def test_frozenset_check_exact(self):
+        check = _testcapi.frozenset_checkexact
+        self.assertFalse(check(set()))
+        self.assertTrue(check(frozenset()))
+        self.assertTrue(check(frozenset({1, 2})))
+        self.assertFalse(check(set_subclass()))
+        self.assertFalse(check(frozenset_subclass()))
+        self.assertFalse(check(object()))
+        # CRASHES: check(NULL)
+
+    def test_anyset_check(self):
+        check = _testcapi.anyset_check
+        self.assertTrue(check(set()))
+        self.assertTrue(check({1, 2}))
+        self.assertTrue(check(frozenset()))
+        self.assertTrue(check(frozenset({1, 2})))
+        self.assertTrue(check(set_subclass()))
+        self.assertTrue(check(frozenset_subclass()))
+        self.assertFalse(check(object()))
+        # CRASHES: check(NULL)
+
+    def test_anyset_check_exact(self):
+        check = _testcapi.anyset_checkexact
+        self.assertTrue(check(set()))
+        self.assertTrue(check({1, 2}))
+        self.assertTrue(check(frozenset()))
+        self.assertTrue(check(frozenset({1, 2})))
+        self.assertFalse(check(set_subclass()))
+        self.assertFalse(check(frozenset_subclass()))
+        self.assertFalse(check(object()))
+        # CRASHES: check(NULL)
+
+    def test_set_new(self):
+        set_new = _testcapi.set_new
+        self.assertEqual(set_new().__class__, set)
+        self.assertEqual(set_new(), set())
+        self.assertEqual(set_new((1, 1, 2)), {1, 2})
+        self.assertEqual(set_new([1, 1, 2]), {1, 2})
+        with self.assertRaisesRegex(TypeError, 'object is not iterable'):
+            set_new(object())
+        with self.assertRaisesRegex(TypeError, 'object is not iterable'):
+            set_new(1)
+        with self.assertRaisesRegex(TypeError, "unhashable type: 'dict'"):
+            set_new((1, {}))
+
+    def test_frozenset_new(self):
+        frozenset_new = _testcapi.frozenset_new
+        self.assertEqual(frozenset_new().__class__, frozenset)
+        self.assertEqual(frozenset_new(), frozenset())
+        self.assertEqual(frozenset_new((1, 1, 2)), frozenset({1, 2}))
+        self.assertEqual(frozenset_new([1, 1, 2]), frozenset({1, 2}))
+        with self.assertRaisesRegex(TypeError, 'object is not iterable'):
+            frozenset_new(object())
+        with self.assertRaisesRegex(TypeError, 'object is not iterable'):
+            frozenset_new(1)
+        with self.assertRaisesRegex(TypeError, "unhashable type: 'dict'"):
+            frozenset_new((1, {}))
+
+    def test_set_size(self):
+        get_size = _testcapi.set_size
+        self.assertEqual(get_size(set()), 0)
+        self.assertEqual(get_size(frozenset()), 0)
+        self.assertEqual(get_size({1, 1, 2}), 2)
+        self.assertEqual(get_size(frozenset({1, 1, 2})), 2)
+        self.assertEqual(get_size(set_subclass((1, 2, 3))), 3)
+        self.assertEqual(get_size(frozenset_subclass((1, 2, 3))), 3)
+        with self.assertRaises(SystemError):
+            get_size(object())
+        # CRASHES: get_size(NULL)
+
+    def test_set_get_size(self):
+        get_size = _testcapi.set_get_size
+        self.assertEqual(get_size(set()), 0)
+        self.assertEqual(get_size(frozenset()), 0)
+        self.assertEqual(get_size({1, 1, 2}), 2)
+        self.assertEqual(get_size(frozenset({1, 1, 2})), 2)
+        self.assertEqual(get_size(set_subclass((1, 2, 3))), 3)
+        self.assertEqual(get_size(frozenset_subclass((1, 2, 3))), 3)
+        # CRASHES: get_size(NULL)
+        # CRASHES: get_size(object())
+
+    def test_set_contains(self):
+        contains = _testcapi.set_contains
+        for cls in (set, frozenset, set_subclass, frozenset_subclass):
+            with self.subTest(cls=cls):
+                instance = cls((1, 2))
+                self.assertTrue(contains(instance, 1))
+                self.assertFalse(contains(instance, 'missing'))
+                with self.assertRaisesRegex(TypeError, "unhashable type: 'list'"):
+                    contains(instance, [])
+        # CRASHES: contains(instance, NULL)
+        # CRASHES: contains(NULL, object())
+        # CRASHES: contains(NULL, NULL)
+
+    def test_add(self):
+        add = _testcapi.set_add
+        for cls in (set, set_subclass):
+            with self.subTest(cls=cls):
+                instance = cls((1, 2))
+                self.assertEqual(add(instance, 1), 0)
+                self.assertEqual(instance, {1, 2})
+                self.assertEqual(add(instance, 3), 0)
+                self.assertEqual(instance, {1, 2, 3})
+                with self.assertRaisesRegex(TypeError, "unhashable type: 'list'"):
+                    add(instance, [])
+        with self.assertRaises(SystemError):
+            add(object(), 1)
+        self.assertImmutable(add, 1)
+        # CRASHES: add(NULL, object())
+        # CRASHES: add(instance, NULL)
+        # CRASHES: add(NULL, NULL)
+
+    def test_discard(self):
+        discard = _testcapi.set_discard
+        for cls in (set, set_subclass):
+            with self.subTest(cls=cls):
+                instance = cls((1, 2))
+                self.assertEqual(discard(instance, 3), 0)
+                self.assertEqual(instance, {1, 2})
+                self.assertEqual(discard(instance, 1), 1)
+                self.assertEqual(instance, {2})
+                self.assertEqual(discard(instance, 2), 1)
+                self.assertEqual(instance, set())
+                self.assertEqual(discard(instance, 2), 0)
+                self.assertEqual(instance, set())
+                with self.assertRaisesRegex(TypeError, "unhashable type: 'list'"):
+                    discard(instance, [])
+        with self.assertRaises(SystemError):
+            discard(object(), 1)
+        self.assertImmutable(discard, 1)
+        # CRASHES: discard(NULL, object())
+        # CRASHES: discard(instance, NULL)
+        # CRASHES: discard(NULL, NULL)
+
+    def test_pop(self):
+        pop = _testcapi.set_pop
+        orig = (1, 2)
+        for cls in (set, set_subclass):
+            with self.subTest(cls=cls):
+                instance = cls(orig)
+                self.assertIn(pop(instance), orig)
+                self.assertEqual(len(instance), 1)
+                self.assertIn(pop(instance), orig)
+                self.assertEqual(len(instance), 0)
+                with self.assertRaises(KeyError):
+                    pop(instance)
+        with self.assertRaises(SystemError):
+            pop(object())
+        self.assertImmutable(pop)
+        # CRASHES: pop(NULL)
+
+    def test_clear(self):
+        clear = _testcapi.set_clear
+        for cls in (set, set_subclass):
+            with self.subTest(cls=cls):
+                instance = cls((1, 2))
+                self.assertEqual(clear(instance), 0)
+                self.assertEqual(instance, set())
+                self.assertEqual(clear(instance), 0)
+                self.assertEqual(instance, set())
+        with self.assertRaises(SystemError):
+            clear(object())
+        self.assertImmutable(clear)
+        # CRASHES: clear(NULL)
+
+
+class TestInternalCAPI(BaseSetTests, unittest.TestCase):
+    def test_set_update(self):
+        update = _testinternalcapi.set_update
+        for cls in (set, set_subclass):
+            for it in ('ab', ('a', 'b'), ['a', 'b'],
+                       set('ab'), set_subclass('ab'),
+                       frozenset('ab'), frozenset_subclass('ab')):
+                with self.subTest(cls=cls, it=it):
+                    instance = cls()
+                    self.assertEqual(update(instance, it), 0)
+                    self.assertEqual(instance, {'a', 'b'})
+                    instance = cls(it)
+                    self.assertEqual(update(instance, it), 0)
+                    self.assertEqual(instance, {'a', 'b'})
+            with self.assertRaisesRegex(TypeError, 'object is not iterable'):
+                update(cls(), 1)
+            with self.assertRaisesRegex(TypeError, "unhashable type: 'dict'"):
+                update(cls(), [{}])
+        with self.assertRaises(SystemError):
+            update(object(), 'ab')
+        self.assertImmutable(update, 'ab')
+        # CRASHES: update(NULL, object())
+        # CRASHES: update(instance, NULL)
+        # CRASHES: update(NULL, NULL)
+
+    def test_set_next_entry(self):
+        set_next = _testinternalcapi.set_next_entry
+        for cls in (set, set_subclass, frozenset, frozenset_subclass):
+            with self.subTest(cls=cls):
+                instance = cls('abc')
+                pos = 0
+                items = []
+                while True:
+                    res = set_next(instance, pos)
+                    if res is None:
+                        break
+                    rc, pos, hash_, item = res
+                    items.append(item)
+                    self.assertEqual(rc, 1)
+                    self.assertIn(item, instance)
+                    self.assertEqual(hash(item), hash_)
+                self.assertEqual(items, list(instance))
+        with self.assertRaises(SystemError):
+            set_next(object(), 0)
+        # CRASHES: set_next(NULL, 0)
diff --git a/Lib/test/test_capi/test_sys.py b/Lib/test/test_capi/test_sys.py
new file mode 100644
index 00000000000000..08bf0370fc59b5
--- /dev/null
+++ b/Lib/test/test_capi/test_sys.py
@@ -0,0 +1,154 @@
+import unittest
+import contextlib
+import sys
+from test import support
+from test.support import import_helper
+
+try:
+    import _testcapi
+except ImportError:
+    _testcapi = None
+
+NULL = None
+
+class CAPITest(unittest.TestCase):
+    # TODO: Test the following functions:
+    #
+    #   PySys_Audit()
+    #   PySys_AuditTuple()
+
+    maxDiff = None
+
+    @support.cpython_only
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    def test_sys_getobject(self):
+        # Test PySys_GetObject()
+        getobject = _testcapi.sys_getobject
+
+        self.assertIs(getobject(b'stdout'), sys.stdout)
+        with support.swap_attr(sys, '\U0001f40d', 42):
+            self.assertEqual(getobject('\U0001f40d'.encode()), 42)
+
+        self.assertIs(getobject(b'nonexisting'), AttributeError)
+        with support.catch_unraisable_exception() as cm:
+            self.assertIs(getobject(b'\xff'), AttributeError)
+            self.assertEqual(cm.unraisable.exc_type, UnicodeDecodeError)
+            self.assertRegex(str(cm.unraisable.exc_value),
+                             "'utf-8' codec can't decode")
+        # CRASHES getobject(NULL)
+
+    @support.cpython_only
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    def test_sys_setobject(self):
+        # Test PySys_SetObject()
+        setobject = _testcapi.sys_setobject
+
+        value = ['value']
+        value2 = ['value2']
+        try:
+            self.assertEqual(setobject(b'newattr', value), 0)
+            self.assertIs(sys.newattr, value)
+            self.assertEqual(setobject(b'newattr', value2), 0)
+            self.assertIs(sys.newattr, value2)
+            self.assertEqual(setobject(b'newattr', NULL), 0)
+            self.assertFalse(hasattr(sys, 'newattr'))
+            self.assertEqual(setobject(b'newattr', NULL), 0)
+        finally:
+            with contextlib.suppress(AttributeError):
+                del sys.newattr
+        try:
+            self.assertEqual(setobject('\U0001f40d'.encode(), value), 0)
+            self.assertIs(getattr(sys, '\U0001f40d'), value)
+            self.assertEqual(setobject('\U0001f40d'.encode(), NULL), 0)
+            self.assertFalse(hasattr(sys, '\U0001f40d'))
+        finally:
+            with contextlib.suppress(AttributeError):
+                delattr(sys, '\U0001f40d')
+
+        with self.assertRaises(UnicodeDecodeError):
+            setobject(b'\xff', value)
+        # CRASHES setobject(NULL, value)
+
+    @support.cpython_only
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    def test_sys_getxoptions(self):
+        # Test PySys_GetXOptions()
+        getxoptions = _testcapi.sys_getxoptions
+
+        self.assertIs(getxoptions(), sys._xoptions)
+
+        xoptions = sys._xoptions
+        try:
+            sys._xoptions = 'non-dict'
+            self.assertEqual(getxoptions(), {})
+            self.assertIs(getxoptions(), sys._xoptions)
+
+            del sys._xoptions
+            self.assertEqual(getxoptions(), {})
+            self.assertIs(getxoptions(), sys._xoptions)
+        finally:
+            sys._xoptions = xoptions
+        self.assertIs(getxoptions(), sys._xoptions)
+
+    def _test_sys_formatstream(self, funname, streamname):
+        import_helper.import_module('ctypes')
+        from ctypes import pythonapi, c_char_p, py_object
+        func = getattr(pythonapi, funname)
+        func.argtypes = (c_char_p,)
+
+        # Supports plain C types.
+        with support.captured_output(streamname) as stream:
+            func(b'Hello, %s!', c_char_p(b'world'))
+        self.assertEqual(stream.getvalue(), 'Hello, world!')
+
+        # Supports Python objects.
+        with support.captured_output(streamname) as stream:
+            func(b'Hello, %R!', py_object('world'))
+        self.assertEqual(stream.getvalue(), "Hello, 'world'!")
+
+        # The total length is not limited.
+        with support.captured_output(streamname) as stream:
+            func(b'Hello, %s!', c_char_p(b'world'*200))
+        self.assertEqual(stream.getvalue(), 'Hello, ' + 'world'*200 + '!')
+
+    def test_sys_formatstdout(self):
+        # Test PySys_FormatStdout()
+        self._test_sys_formatstream('PySys_FormatStdout', 'stdout')
+
+    def test_sys_formatstderr(self):
+        # Test PySys_FormatStderr()
+        self._test_sys_formatstream('PySys_FormatStderr', 'stderr')
+
+    def _test_sys_writestream(self, funname, streamname):
+        import_helper.import_module('ctypes')
+        from ctypes import pythonapi, c_char_p
+        func = getattr(pythonapi, funname)
+        func.argtypes = (c_char_p,)
+
+        # Supports plain C types.
+        with support.captured_output(streamname) as stream:
+            func(b'Hello, %s!', c_char_p(b'world'))
+        self.assertEqual(stream.getvalue(), 'Hello, world!')
+
+        # There is a limit on the total length.
+        with support.captured_output(streamname) as stream:
+            func(b'Hello, %s!', c_char_p(b'world'*100))
+        self.assertEqual(stream.getvalue(), 'Hello, ' + 'world'*100 + '!')
+        with support.captured_output(streamname) as stream:
+            func(b'Hello, %s!', c_char_p(b'world'*200))
+        out = stream.getvalue()
+        self.assertEqual(out[:20], 'Hello, worldworldwor')
+        self.assertEqual(out[-13:], '... truncated')
+        self.assertGreater(len(out), 1000)
+
+    def test_sys_writestdout(self):
+        # Test PySys_WriteStdout()
+        self._test_sys_writestream('PySys_WriteStdout', 'stdout')
+
+    def test_sys_writestderr(self):
+        # Test PySys_WriteStderr()
+        self._test_sys_writestream('PySys_WriteStderr', 'stderr')
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_unicode.py b/Lib/test/test_capi/test_unicode.py
index 00807d968a7c43..bb6161abf4da81 100644
--- a/Lib/test/test_capi/test_unicode.py
+++ b/Lib/test/test_capi/test_unicode.py
@@ -5,8 +5,13 @@
 
 try:
     import _testcapi
+    from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
 except ImportError:
     _testcapi = None
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = None
 
 
 NULL = None
@@ -26,9 +31,17 @@ def test_new(self):
         for maxchar in 0, 0x61, 0xa1, 0x4f60, 0x1f600, 0x10ffff:
             self.assertEqual(new(0, maxchar), '')
             self.assertEqual(new(5, maxchar), chr(maxchar)*5)
+            self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX, maxchar)
         self.assertEqual(new(0, 0x110000), '')
+        self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX//2, 0x4f60)
+        self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX//2+1, 0x4f60)
+        self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX//2, 0x1f600)
+        self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX//2+1, 0x1f600)
+        self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX//4, 0x1f600)
+        self.assertRaises(MemoryError, new, PY_SSIZE_T_MAX//4+1, 0x1f600)
         self.assertRaises(SystemError, new, 5, 0x110000)
         self.assertRaises(SystemError, new, -1, 0)
+        self.assertRaises(SystemError, new, PY_SSIZE_T_MIN, 0)
 
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, 'need _testcapi module')
@@ -49,8 +62,8 @@ def test_fill(self):
             for to in strings[:idx]:
                 self.assertRaises(ValueError, fill, to, 0, 0, fill_char)
             for to in strings[idx:]:
-                for start in range(7):
-                    for length in range(-1, 7 - start):
+                for start in [*range(7), PY_SSIZE_T_MAX]:
+                    for length in [*range(-1, 7 - start), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
                         filled = max(min(length, 5 - start), 0)
                         if filled == 5 and to != strings[idx]:
                             # narrow -> wide
@@ -62,6 +75,7 @@ def test_fill(self):
 
         s = strings[0]
         self.assertRaises(IndexError, fill, s, -1, 0, 0x78)
+        self.assertRaises(IndexError, fill, s, PY_SSIZE_T_MIN, 0, 0x78)
         self.assertRaises(ValueError, fill, s, 0, 0, 0x110000)
         self.assertRaises(SystemError, fill, b'abc', 0, 0, 0x78)
         self.assertRaises(SystemError, fill, [], 0, 0, 0x78)
@@ -72,7 +86,7 @@ def test_fill(self):
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, 'need _testcapi module')
     def test_writechar(self):
-        """Test PyUnicode_ReadChar()"""
+        """Test PyUnicode_WriteChar()"""
         from _testcapi import unicode_writechar as writechar
 
         strings = [
@@ -92,10 +106,12 @@ def test_writechar(self):
 
         self.assertRaises(IndexError, writechar, 'abc', 3, 0x78)
         self.assertRaises(IndexError, writechar, 'abc', -1, 0x78)
+        self.assertRaises(IndexError, writechar, 'abc', PY_SSIZE_T_MAX, 0x78)
+        self.assertRaises(IndexError, writechar, 'abc', PY_SSIZE_T_MIN, 0x78)
         self.assertRaises(TypeError, writechar, b'abc', 0, 0x78)
         self.assertRaises(TypeError, writechar, [], 0, 0x78)
         # CRASHES writechar(NULL, 0, 0x78)
-        # TODO: Test PyUnicode_CopyCharacters() with non-modifiable and legacy
+        # TODO: Test PyUnicode_WriteChar() with non-modifiable and legacy
         # unicode.
 
     @support.cpython_only
@@ -113,7 +129,11 @@ def test_resize(self):
             self.assertEqual(resize(s, 3), (s, 0))
             self.assertEqual(resize(s, 2), (s[:2], 0))
             self.assertEqual(resize(s, 4), (s + '\0', 0))
+            self.assertEqual(resize(s, 10), (s + '\0'*7, 0))
             self.assertEqual(resize(s, 0), ('', 0))
+            self.assertRaises(MemoryError, resize, s, PY_SSIZE_T_MAX)
+            self.assertRaises(SystemError, resize, s, -1)
+            self.assertRaises(SystemError, resize, s, PY_SSIZE_T_MIN)
         self.assertRaises(SystemError, resize, b'abc', 0)
         self.assertRaises(SystemError, resize, [], 0)
         self.assertRaises(SystemError, resize, NULL, 0)
@@ -192,8 +212,13 @@ def test_fromstringandsize(self):
         self.assertEqual(fromstringandsize(b'', 0), '')
         self.assertEqual(fromstringandsize(NULL, 0), '')
 
+        self.assertRaises(MemoryError, fromstringandsize, b'abc', PY_SSIZE_T_MAX)
         self.assertRaises(SystemError, fromstringandsize, b'abc', -1)
-        # TODO: Test PyUnicode_FromStringAndSize(NULL, size) for size != 0
+        self.assertRaises(SystemError, fromstringandsize, b'abc', PY_SSIZE_T_MIN)
+        self.assertRaises(SystemError, fromstringandsize, NULL, -1)
+        self.assertRaises(SystemError, fromstringandsize, NULL, PY_SSIZE_T_MIN)
+        self.assertRaises(SystemError, fromstringandsize, NULL, 3)
+        self.assertRaises(SystemError, fromstringandsize, NULL, PY_SSIZE_T_MAX)
 
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, 'need _testcapi module')
@@ -241,7 +266,9 @@ def test_fromkindanddata(self):
         for kind in -1, 0, 3, 5, 8:
             self.assertRaises(SystemError, fromkindanddata, kind, b'')
         self.assertRaises(ValueError, fromkindanddata, 1, b'abc', -1)
+        self.assertRaises(ValueError, fromkindanddata, 1, b'abc', PY_SSIZE_T_MIN)
         self.assertRaises(ValueError, fromkindanddata, 1, NULL, -1)
+        self.assertRaises(ValueError, fromkindanddata, 1, NULL, PY_SSIZE_T_MIN)
         # CRASHES fromkindanddata(1, NULL, 1)
         # CRASHES fromkindanddata(4, b'\xff\xff\xff\xff')
 
@@ -257,12 +284,14 @@ def test_substring(self):
             'ab\xa1\xa2\u4f60\u597d\U0001f600\U0001f601'
         ]
         for s in strings:
-            for start in range(0, len(s) + 2):
-                for end in range(max(start-1, 0), len(s) + 2):
+            for start in [*range(0, len(s) + 2), PY_SSIZE_T_MAX]:
+                for end in [*range(max(start-1, 0), len(s) + 2), PY_SSIZE_T_MAX]:
                     self.assertEqual(substring(s, start, end), s[start:end])
 
         self.assertRaises(IndexError, substring, 'abc', -1, 0)
+        self.assertRaises(IndexError, substring, 'abc', PY_SSIZE_T_MIN, 0)
         self.assertRaises(IndexError, substring, 'abc', 0, -1)
+        self.assertRaises(IndexError, substring, 'abc', 0, PY_SSIZE_T_MIN)
         # CRASHES substring(b'abc', 0, 0)
         # CRASHES substring([], 0, 0)
         # CRASHES substring(NULL, 0, 0)
@@ -292,7 +321,9 @@ def test_readchar(self):
             for i, c in enumerate(s):
                 self.assertEqual(readchar(s, i), ord(c))
             self.assertRaises(IndexError, readchar, s, len(s))
+            self.assertRaises(IndexError, readchar, s, PY_SSIZE_T_MAX)
             self.assertRaises(IndexError, readchar, s, -1)
+            self.assertRaises(IndexError, readchar, s, PY_SSIZE_T_MIN)
 
         self.assertRaises(TypeError, readchar, b'abc', 0)
         self.assertRaises(TypeError, readchar, [], 0)
@@ -319,12 +350,17 @@ def test_fromobject(self):
 
     def test_from_format(self):
         """Test PyUnicode_FromFormat()"""
+        # Length modifiers "j" and "t" are not tested here because ctypes does
+        # not expose types for intmax_t and ptrdiff_t.
+        # _testcapi.test_string_from_format() has a wider coverage of all
+        # formats.
         import_helper.import_module('ctypes')
         from ctypes import (
             c_char_p,
             pythonapi, py_object, sizeof,
             c_int, c_long, c_longlong, c_ssize_t,
-            c_uint, c_ulong, c_ulonglong, c_size_t, c_void_p)
+            c_uint, c_ulong, c_ulonglong, c_size_t, c_void_p,
+            c_wchar, c_wchar_p)
         name = "PyUnicode_FromFormat"
         _PyUnicode_FromFormat = getattr(pythonapi, name)
         _PyUnicode_FromFormat.argtypes = (c_char_p,)
@@ -449,37 +485,28 @@ def check_format(expected, format, *args):
         check_format("repr=   12",
                      b'repr=%5.2V', None, b'123')
 
-        # test integer formats (%i, %d, %u)
+        # test integer formats (%i, %d, %u, %o, %x, %X)
         check_format('010',
                      b'%03i', c_int(10))
         check_format('0010',
                      b'%0.4i', c_int(10))
-        check_format('-123',
-                     b'%i', c_int(-123))
-        check_format('-123',
-                     b'%li', c_long(-123))
-        check_format('-123',
-                     b'%lli', c_longlong(-123))
-        check_format('-123',
-                     b'%zi', c_ssize_t(-123))
-
-        check_format('-123',
-                     b'%d', c_int(-123))
-        check_format('-123',
-                     b'%ld', c_long(-123))
-        check_format('-123',
-                     b'%lld', c_longlong(-123))
-        check_format('-123',
-                     b'%zd', c_ssize_t(-123))
-
-        check_format('123',
-                     b'%u', c_uint(123))
-        check_format('123',
-                     b'%lu', c_ulong(123))
-        check_format('123',
-                     b'%llu', c_ulonglong(123))
-        check_format('123',
-                     b'%zu', c_size_t(123))
+        for conv, signed, value, expected in [
+            (b'i', True, -123, '-123'),
+            (b'd', True, -123, '-123'),
+            (b'u', False, 123, '123'),
+            (b'o', False, 0o123, '123'),
+            (b'x', False, 0xabc, 'abc'),
+            (b'X', False, 0xabc, 'ABC'),
+        ]:
+            for mod, ctype in [
+                (b'', c_int if signed else c_uint),
+                (b'l', c_long if signed else c_ulong),
+                (b'll', c_longlong if signed else c_ulonglong),
+                (b'z', c_ssize_t if signed else c_size_t),
+            ]:
+                with self.subTest(format=b'%' + mod + conv):
+                    check_format(expected,
+                                 b'%' + mod + conv, ctype(value))
 
         # test long output
         min_longlong = -(2 ** (8 * sizeof(c_longlong) - 1))
@@ -494,40 +521,144 @@ def check_format(expected, format, *args):
         PyUnicode_FromFormat(b'%p', c_void_p(-1))
 
         # test padding (width and/or precision)
-        check_format('123'.rjust(10, '0'),
-                     b'%010i', c_int(123))
-        check_format('123'.rjust(100),
-                     b'%100i', c_int(123))
-        check_format('123'.rjust(100, '0'),
-                     b'%.100i', c_int(123))
-        check_format('123'.rjust(80, '0').rjust(100),
-                     b'%100.80i', c_int(123))
-
-        check_format('123'.rjust(10, '0'),
-                     b'%010u', c_uint(123))
-        check_format('123'.rjust(100),
-                     b'%100u', c_uint(123))
-        check_format('123'.rjust(100, '0'),
-                     b'%.100u', c_uint(123))
-        check_format('123'.rjust(80, '0').rjust(100),
-                     b'%100.80u', c_uint(123))
-
-        check_format('123'.rjust(10, '0'),
-                     b'%010x', c_int(0x123))
-        check_format('123'.rjust(100),
-                     b'%100x', c_int(0x123))
-        check_format('123'.rjust(100, '0'),
-                     b'%.100x', c_int(0x123))
-        check_format('123'.rjust(80, '0').rjust(100),
-                     b'%100.80x', c_int(0x123))
+        check_format('123',        b'%2i', c_int(123))
+        check_format('       123', b'%10i', c_int(123))
+        check_format('0000000123', b'%010i', c_int(123))
+        check_format('123       ', b'%-10i', c_int(123))
+        check_format('123       ', b'%-010i', c_int(123))
+        check_format('123',        b'%.2i', c_int(123))
+        check_format('0000123',    b'%.7i', c_int(123))
+        check_format('       123', b'%10.2i', c_int(123))
+        check_format('   0000123', b'%10.7i', c_int(123))
+        check_format('0000000123', b'%010.7i', c_int(123))
+        check_format('0000123   ', b'%-10.7i', c_int(123))
+        check_format('0000123   ', b'%-010.7i', c_int(123))
+
+        check_format('-123',       b'%2i', c_int(-123))
+        check_format('      -123', b'%10i', c_int(-123))
+        check_format('-000000123', b'%010i', c_int(-123))
+        check_format('-123      ', b'%-10i', c_int(-123))
+        check_format('-123      ', b'%-010i', c_int(-123))
+        check_format('-123',       b'%.2i', c_int(-123))
+        check_format('-0000123',   b'%.7i', c_int(-123))
+        check_format('      -123', b'%10.2i', c_int(-123))
+        check_format('  -0000123', b'%10.7i', c_int(-123))
+        check_format('-000000123', b'%010.7i', c_int(-123))
+        check_format('-0000123  ', b'%-10.7i', c_int(-123))
+        check_format('-0000123  ', b'%-010.7i', c_int(-123))
+
+        check_format('123',        b'%2u', c_uint(123))
+        check_format('       123', b'%10u', c_uint(123))
+        check_format('0000000123', b'%010u', c_uint(123))
+        check_format('123       ', b'%-10u', c_uint(123))
+        check_format('123       ', b'%-010u', c_uint(123))
+        check_format('123',        b'%.2u', c_uint(123))
+        check_format('0000123',    b'%.7u', c_uint(123))
+        check_format('       123', b'%10.2u', c_uint(123))
+        check_format('   0000123', b'%10.7u', c_uint(123))
+        check_format('0000000123', b'%010.7u', c_uint(123))
+        check_format('0000123   ', b'%-10.7u', c_uint(123))
+        check_format('0000123   ', b'%-010.7u', c_uint(123))
+
+        check_format('123',        b'%2o', c_uint(0o123))
+        check_format('       123', b'%10o', c_uint(0o123))
+        check_format('0000000123', b'%010o', c_uint(0o123))
+        check_format('123       ', b'%-10o', c_uint(0o123))
+        check_format('123       ', b'%-010o', c_uint(0o123))
+        check_format('123',        b'%.2o', c_uint(0o123))
+        check_format('0000123',    b'%.7o', c_uint(0o123))
+        check_format('       123', b'%10.2o', c_uint(0o123))
+        check_format('   0000123', b'%10.7o', c_uint(0o123))
+        check_format('0000000123', b'%010.7o', c_uint(0o123))
+        check_format('0000123   ', b'%-10.7o', c_uint(0o123))
+        check_format('0000123   ', b'%-010.7o', c_uint(0o123))
+
+        check_format('abc',        b'%2x', c_uint(0xabc))
+        check_format('       abc', b'%10x', c_uint(0xabc))
+        check_format('0000000abc', b'%010x', c_uint(0xabc))
+        check_format('abc       ', b'%-10x', c_uint(0xabc))
+        check_format('abc       ', b'%-010x', c_uint(0xabc))
+        check_format('abc',        b'%.2x', c_uint(0xabc))
+        check_format('0000abc',    b'%.7x', c_uint(0xabc))
+        check_format('       abc', b'%10.2x', c_uint(0xabc))
+        check_format('   0000abc', b'%10.7x', c_uint(0xabc))
+        check_format('0000000abc', b'%010.7x', c_uint(0xabc))
+        check_format('0000abc   ', b'%-10.7x', c_uint(0xabc))
+        check_format('0000abc   ', b'%-010.7x', c_uint(0xabc))
+
+        check_format('ABC',        b'%2X', c_uint(0xabc))
+        check_format('       ABC', b'%10X', c_uint(0xabc))
+        check_format('0000000ABC', b'%010X', c_uint(0xabc))
+        check_format('ABC       ', b'%-10X', c_uint(0xabc))
+        check_format('ABC       ', b'%-010X', c_uint(0xabc))
+        check_format('ABC',        b'%.2X', c_uint(0xabc))
+        check_format('0000ABC',    b'%.7X', c_uint(0xabc))
+        check_format('       ABC', b'%10.2X', c_uint(0xabc))
+        check_format('   0000ABC', b'%10.7X', c_uint(0xabc))
+        check_format('0000000ABC', b'%010.7X', c_uint(0xabc))
+        check_format('0000ABC   ', b'%-10.7X', c_uint(0xabc))
+        check_format('0000ABC   ', b'%-010.7X', c_uint(0xabc))
 
         # test %A
         check_format(r"%A:'abc\xe9\uabcd\U0010ffff'",
                      b'%%A:%A', 'abc\xe9\uabcd\U0010ffff')
 
         # test %V
-        check_format('repr=abc',
-                     b'repr=%V', 'abc', b'xyz')
+        check_format('abc',
+                     b'%V', 'abc', b'xyz')
+        check_format('xyz',
+                     b'%V', None, b'xyz')
+
+        # test %ls
+        check_format('abc', b'%ls', c_wchar_p('abc'))
+        check_format('\u4eba\u6c11', b'%ls', c_wchar_p('\u4eba\u6c11'))
+        check_format('\U0001f4bb+\U0001f40d',
+                     b'%ls', c_wchar_p('\U0001f4bb+\U0001f40d'))
+        check_format('   ab', b'%5.2ls', c_wchar_p('abc'))
+        check_format('   \u4eba\u6c11', b'%5ls', c_wchar_p('\u4eba\u6c11'))
+        check_format('  \U0001f4bb+\U0001f40d',
+                     b'%5ls', c_wchar_p('\U0001f4bb+\U0001f40d'))
+        check_format('\u4eba', b'%.1ls', c_wchar_p('\u4eba\u6c11'))
+        check_format('\U0001f4bb' if sizeof(c_wchar) > 2 else '\ud83d',
+                     b'%.1ls', c_wchar_p('\U0001f4bb+\U0001f40d'))
+        check_format('\U0001f4bb+' if sizeof(c_wchar) > 2 else '\U0001f4bb',
+                     b'%.2ls', c_wchar_p('\U0001f4bb+\U0001f40d'))
+
+        # test %lV
+        check_format('abc',
+                     b'%lV', 'abc', c_wchar_p('xyz'))
+        check_format('xyz',
+                     b'%lV', None, c_wchar_p('xyz'))
+        check_format('\u4eba\u6c11',
+                     b'%lV', None, c_wchar_p('\u4eba\u6c11'))
+        check_format('\U0001f4bb+\U0001f40d',
+                     b'%lV', None, c_wchar_p('\U0001f4bb+\U0001f40d'))
+        check_format('   ab',
+                     b'%5.2lV', None, c_wchar_p('abc'))
+        check_format('   \u4eba\u6c11',
+                     b'%5lV', None, c_wchar_p('\u4eba\u6c11'))
+        check_format('  \U0001f4bb+\U0001f40d',
+                     b'%5lV', None, c_wchar_p('\U0001f4bb+\U0001f40d'))
+        check_format('\u4eba',
+                     b'%.1lV', None, c_wchar_p('\u4eba\u6c11'))
+        check_format('\U0001f4bb' if sizeof(c_wchar) > 2 else '\ud83d',
+                     b'%.1lV', None, c_wchar_p('\U0001f4bb+\U0001f40d'))
+        check_format('\U0001f4bb+' if sizeof(c_wchar) > 2 else '\U0001f4bb',
+                     b'%.2lV', None, c_wchar_p('\U0001f4bb+\U0001f40d'))
+
+        # test variable width and precision
+        check_format('  abc', b'%*s', c_int(5), b'abc')
+        check_format('ab', b'%.*s', c_int(2), b'abc')
+        check_format('   ab', b'%*.*s', c_int(5), c_int(2), b'abc')
+        check_format('  abc', b'%*U', c_int(5), 'abc')
+        check_format('ab', b'%.*U', c_int(2), 'abc')
+        check_format('   ab', b'%*.*U', c_int(5), c_int(2), 'abc')
+        check_format('   ab', b'%*.*V', c_int(5), c_int(2), None, b'abc')
+        check_format('   ab', b'%*.*lV', c_int(5), c_int(2),
+                     None, c_wchar_p('abc'))
+        check_format('     123', b'%*i', c_int(8), c_int(123))
+        check_format('00123', b'%.*i', c_int(5), c_int(123))
+        check_format('   00123', b'%*.*i', c_int(8), c_int(5), c_int(123))
 
         # test %p
         # We cannot test the exact result,
@@ -564,10 +695,11 @@ def check_format(expected, format, *args):
         check_format('',
                      b'%s', b'')
 
-        # check for crashes
+        # test invalid format strings. these tests are just here
+        # to check for crashes and should not be considered as specifications
         for fmt in (b'%', b'%0', b'%01', b'%.', b'%.1',
                     b'%0%s', b'%1%s', b'%.%s', b'%.1%s', b'%1abc',
-                    b'%l', b'%ll', b'%z', b'%ls', b'%lls', b'%zs'):
+                    b'%l', b'%ll', b'%z', b'%lls', b'%zs'):
             with self.subTest(fmt=fmt):
                 self.assertRaisesRegex(SystemError, 'invalid format string',
                     PyUnicode_FromFormat, fmt, b'abc')
@@ -626,10 +758,15 @@ def test_fromwidechar(self):
         if SIZEOF_WCHAR_T == 2:
             self.assertEqual(fromwidechar('a\U0001f600'.encode(encoding), 2), 'a\ud83d')
 
+        self.assertRaises(MemoryError, fromwidechar, b'', PY_SSIZE_T_MAX)
         self.assertRaises(SystemError, fromwidechar, b'\0'*SIZEOF_WCHAR_T, -2)
+        self.assertRaises(SystemError, fromwidechar, b'\0'*SIZEOF_WCHAR_T, PY_SSIZE_T_MIN)
         self.assertEqual(fromwidechar(NULL, 0), '')
         self.assertRaises(SystemError, fromwidechar, NULL, 1)
+        self.assertRaises(SystemError, fromwidechar, NULL, PY_SSIZE_T_MAX)
         self.assertRaises(SystemError, fromwidechar, NULL, -1)
+        self.assertRaises(SystemError, fromwidechar, NULL, -2)
+        self.assertRaises(SystemError, fromwidechar, NULL, PY_SSIZE_T_MIN)
 
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, 'need _testcapi module')
@@ -801,7 +938,11 @@ def test_asutf8andsize(self):
         self.assertRaises(UnicodeEncodeError, unicode_asutf8andsize, '\ud8ff', 0)
         self.assertRaises(TypeError, unicode_asutf8andsize, b'abc', 0)
         self.assertRaises(TypeError, unicode_asutf8andsize, [], 0)
+        self.assertRaises(UnicodeEncodeError, unicode_asutf8andsize_null, '\ud8ff', 0)
+        self.assertRaises(TypeError, unicode_asutf8andsize_null, b'abc', 0)
+        self.assertRaises(TypeError, unicode_asutf8andsize_null, [], 0)
         # CRASHES unicode_asutf8andsize(NULL, 0)
+        # CRASHES unicode_asutf8andsize_null(NULL, 0)
 
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, 'need _testcapi module')
@@ -812,10 +953,10 @@ def test_getdefaultencoding(self):
         self.assertEqual(getdefaultencoding(), b'utf-8')
 
     @support.cpython_only
-    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    @unittest.skipIf(_testinternalcapi is None, 'need _testinternalcapi module')
     def test_transform_decimal_and_space(self):
         """Test _PyUnicode_TransformDecimalAndSpaceToASCII()"""
-        from _testcapi import unicode_transformdecimalandspacetoascii as transform_decimal
+        from _testinternalcapi import _PyUnicode_TransformDecimalAndSpaceToASCII as transform_decimal
 
         self.assertEqual(transform_decimal('123'),
                          '123')
@@ -860,6 +1001,11 @@ def test_split(self):
 
         self.assertEqual(split('a|b|c|d', '|'), ['a', 'b', 'c', 'd'])
         self.assertEqual(split('a|b|c|d', '|', 2), ['a', 'b', 'c|d'])
+        self.assertEqual(split('a|b|c|d', '|', PY_SSIZE_T_MAX),
+                         ['a', 'b', 'c', 'd'])
+        self.assertEqual(split('a|b|c|d', '|', -1), ['a', 'b', 'c', 'd'])
+        self.assertEqual(split('a|b|c|d', '|', PY_SSIZE_T_MIN),
+                         ['a', 'b', 'c', 'd'])
         self.assertEqual(split('a|b|c|d', '\u20ac'), ['a|b|c|d'])
         self.assertEqual(split('a||b|c||d', '||'), ['a', 'b|c', 'd'])
         self.assertEqual(split('а|б|в|г', '|'), ['а', 'б', 'в', 'г'])
@@ -883,6 +1029,11 @@ def test_rsplit(self):
 
         self.assertEqual(rsplit('a|b|c|d', '|'), ['a', 'b', 'c', 'd'])
         self.assertEqual(rsplit('a|b|c|d', '|', 2), ['a|b', 'c', 'd'])
+        self.assertEqual(rsplit('a|b|c|d', '|', PY_SSIZE_T_MAX),
+                         ['a', 'b', 'c', 'd'])
+        self.assertEqual(rsplit('a|b|c|d', '|', -1), ['a', 'b', 'c', 'd'])
+        self.assertEqual(rsplit('a|b|c|d', '|', PY_SSIZE_T_MIN),
+                         ['a', 'b', 'c', 'd'])
         self.assertEqual(rsplit('a|b|c|d', '\u20ac'), ['a|b|c|d'])
         self.assertEqual(rsplit('a||b|c||d', '||'), ['a', 'b|c', 'd'])
         self.assertEqual(rsplit('а|б|в|г', '|'), ['а', 'б', 'в', 'г'])
@@ -1015,11 +1166,14 @@ def test_count(self):
         self.assertEqual(unicode_count(str, '', 0, len(str)), len(str)+1)
         # start < end
         self.assertEqual(unicode_count(str, '!', 1, len(str)+1), 1)
+        self.assertEqual(unicode_count(str, '!', 1, PY_SSIZE_T_MAX), 1)
         # start >= end
         self.assertEqual(unicode_count(str, '!', 0, 0), 0)
         self.assertEqual(unicode_count(str, '!', len(str), 0), 0)
         # negative
         self.assertEqual(unicode_count(str, '!', -len(str), -1), 1)
+        self.assertEqual(unicode_count(str, '!', -len(str)-1, -1), 1)
+        self.assertEqual(unicode_count(str, '!', PY_SSIZE_T_MIN, -1), 1)
         # bad arguments
         self.assertRaises(TypeError, unicode_count, str, b'!', 0, len(str))
         self.assertRaises(TypeError, unicode_count, b"!>_<!", '!', 0, len(str))
@@ -1038,11 +1192,11 @@ def test_tailmatch(self):
         self.assertEqual(tailmatch(str, 'aba', 0, len(str), -1), 1)
         self.assertEqual(tailmatch(str, 'aha', 0, len(str), 1), 1)
 
-        self.assertEqual(tailmatch(str, 'aba', 0, sys.maxsize, -1), 1)
-        self.assertEqual(tailmatch(str, 'aba', -len(str), sys.maxsize, -1), 1)
-        self.assertEqual(tailmatch(str, 'aba', -sys.maxsize-1, len(str), -1), 1)
-        self.assertEqual(tailmatch(str, 'aha', 0, sys.maxsize, 1), 1)
-        self.assertEqual(tailmatch(str, 'aha', -sys.maxsize-1, len(str), 1), 1)
+        self.assertEqual(tailmatch(str, 'aba', 0, PY_SSIZE_T_MAX, -1), 1)
+        self.assertEqual(tailmatch(str, 'aba', -len(str), PY_SSIZE_T_MAX, -1), 1)
+        self.assertEqual(tailmatch(str, 'aba', PY_SSIZE_T_MIN, len(str), -1), 1)
+        self.assertEqual(tailmatch(str, 'aha', 0, PY_SSIZE_T_MAX, 1), 1)
+        self.assertEqual(tailmatch(str, 'aha', PY_SSIZE_T_MIN, len(str), 1), 1)
 
         self.assertEqual(tailmatch(str, 'z', 0, len(str), 1), 0)
         self.assertEqual(tailmatch(str, 'z', 0, len(str), -1), 0)
@@ -1081,13 +1235,21 @@ def test_find(self):
         self.assertEqual(find(str, '', 0, len(str), -1), len(str))
         # start < end
         self.assertEqual(find(str, '!', 1, len(str)+1, 1), 4)
-        self.assertEqual(find(str, '!', 1, len(str)+1, -1), 4)
+        self.assertEqual(find(str, '!', 1, PY_SSIZE_T_MAX, 1), 4)
+        self.assertEqual(find(str, '!', 0, len(str)+1, -1), 4)
+        self.assertEqual(find(str, '!', 0, PY_SSIZE_T_MAX, -1), 4)
         # start >= end
         self.assertEqual(find(str, '!', 0, 0, 1), -1)
+        self.assertEqual(find(str, '!', 0, 0, -1), -1)
         self.assertEqual(find(str, '!', len(str), 0, 1), -1)
+        self.assertEqual(find(str, '!', len(str), 0, -1), -1)
         # negative
         self.assertEqual(find(str, '!', -len(str), -1, 1), 0)
         self.assertEqual(find(str, '!', -len(str), -1, -1), 0)
+        self.assertEqual(find(str, '!', PY_SSIZE_T_MIN, -1, 1), 0)
+        self.assertEqual(find(str, '!', PY_SSIZE_T_MIN, -1, -1), 0)
+        self.assertEqual(find(str, '!', PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, 1), 0)
+        self.assertEqual(find(str, '!', PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, -1), 4)
         # bad arguments
         self.assertRaises(TypeError, find, str, b'!', 0, len(str), 1)
         self.assertRaises(TypeError, find, b"!>_<!", '!', 0, len(str), 1)
@@ -1112,13 +1274,21 @@ def test_findchar(self):
         self.assertEqual(unicode_findchar(str, 0x110000, 0, len(str), -1), -1)
         # start < end
         self.assertEqual(unicode_findchar(str, ord('!'), 1, len(str)+1, 1), 4)
-        self.assertEqual(unicode_findchar(str, ord('!'), 1, len(str)+1, -1), 4)
+        self.assertEqual(unicode_findchar(str, ord('!'), 1, PY_SSIZE_T_MAX, 1), 4)
+        self.assertEqual(unicode_findchar(str, ord('!'), 0, len(str)+1, -1), 4)
+        self.assertEqual(unicode_findchar(str, ord('!'), 0, PY_SSIZE_T_MAX, -1), 4)
         # start >= end
         self.assertEqual(unicode_findchar(str, ord('!'), 0, 0, 1), -1)
+        self.assertEqual(unicode_findchar(str, ord('!'), 0, 0, -1), -1)
         self.assertEqual(unicode_findchar(str, ord('!'), len(str), 0, 1), -1)
+        self.assertEqual(unicode_findchar(str, ord('!'), len(str), 0, -1), -1)
         # negative
         self.assertEqual(unicode_findchar(str, ord('!'), -len(str), -1, 1), 0)
         self.assertEqual(unicode_findchar(str, ord('!'), -len(str), -1, -1), 0)
+        self.assertEqual(unicode_findchar(str, ord('!'), PY_SSIZE_T_MIN, -1, 1), 0)
+        self.assertEqual(unicode_findchar(str, ord('!'), PY_SSIZE_T_MIN, -1, -1), 0)
+        self.assertEqual(unicode_findchar(str, ord('!'), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, 1), 0)
+        self.assertEqual(unicode_findchar(str, ord('!'), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, -1), 4)
         # bad arguments
         # CRASHES unicode_findchar(b"!>_<!", ord('!'), 0, len(str), 1)
         # CRASHES unicode_findchar([], ord('!'), 0, len(str), 1)
@@ -1136,7 +1306,9 @@ def test_replace(self):
         self.assertEqual(replace(str, 'abra', '='), '=cad=')
         self.assertEqual(replace(str, 'a', '=', 2), '=br=cadabra')
         self.assertEqual(replace(str, 'a', '=', 0), str)
-        self.assertEqual(replace(str, 'a', '=', sys.maxsize), '=br=c=d=br=')
+        self.assertEqual(replace(str, 'a', '=', PY_SSIZE_T_MAX), '=br=c=d=br=')
+        self.assertEqual(replace(str, 'a', '=', -1), '=br=c=d=br=')
+        self.assertEqual(replace(str, 'a', '=', PY_SSIZE_T_MIN), '=br=c=d=br=')
         self.assertEqual(replace(str, 'z', '='), str)
         self.assertEqual(replace(str, '', '='), '=a=b=r=a=c=a=d=a=b=r=a=')
         self.assertEqual(replace(str, 'a', 'ж'), 'жbrжcжdжbrж')
@@ -1192,6 +1364,121 @@ def test_comparewithasciistring(self):
         # CRASHES comparewithasciistring([], b'abc')
         # CRASHES comparewithasciistring(NULL, b'abc')
 
+    @support.cpython_only
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    def test_equaltoutf8(self):
+        # Test PyUnicode_EqualToUTF8()
+        from _testcapi import unicode_equaltoutf8 as equaltoutf8
+        from _testcapi import unicode_asutf8andsize as asutf8andsize
+
+        strings = [
+            'abc', '\xa1\xa2\xa3', '\u4f60\u597d\u4e16',
+            '\U0001f600\U0001f601\U0001f602',
+            '\U0010ffff',
+        ]
+        for s in strings:
+            # Call PyUnicode_AsUTF8AndSize() which creates the UTF-8
+            # encoded string cached in the Unicode object.
+            asutf8andsize(s, 0)
+            b = s.encode()
+            self.assertEqual(equaltoutf8(s, b), 1)  # Use the UTF-8 cache.
+            s2 = b.decode()  # New Unicode object without the UTF-8 cache.
+            self.assertEqual(equaltoutf8(s2, b), 1)
+            self.assertEqual(equaltoutf8(s + 'x', b + b'x'), 1)
+            self.assertEqual(equaltoutf8(s + 'x', b + b'y'), 0)
+            self.assertEqual(equaltoutf8(s, b + b'\0'), 1)
+            self.assertEqual(equaltoutf8(s2, b + b'\0'), 1)
+            self.assertEqual(equaltoutf8(s + '\0', b + b'\0'), 0)
+            self.assertEqual(equaltoutf8(s + '\0', b), 0)
+            self.assertEqual(equaltoutf8(s2, b + b'x'), 0)
+            self.assertEqual(equaltoutf8(s2, b[:-1]), 0)
+            self.assertEqual(equaltoutf8(s2, b[:-1] + b'x'), 0)
+
+        self.assertEqual(equaltoutf8('', b''), 1)
+        self.assertEqual(equaltoutf8('', b'\0'), 1)
+
+        # embedded null chars/bytes
+        self.assertEqual(equaltoutf8('abc', b'abc\0def\0'), 1)
+        self.assertEqual(equaltoutf8('a\0bc', b'abc'), 0)
+        self.assertEqual(equaltoutf8('abc', b'a\0bc'), 0)
+
+        # Surrogate characters are always treated as not equal
+        self.assertEqual(equaltoutf8('\udcfe',
+                            '\udcfe'.encode("utf8", "surrogateescape")), 0)
+        self.assertEqual(equaltoutf8('\udcfe',
+                            '\udcfe'.encode("utf8", "surrogatepass")), 0)
+        self.assertEqual(equaltoutf8('\ud801',
+                            '\ud801'.encode("utf8", "surrogatepass")), 0)
+
+    @support.cpython_only
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    def test_equaltoutf8andsize(self):
+        # Test PyUnicode_EqualToUTF8AndSize()
+        from _testcapi import unicode_equaltoutf8andsize as equaltoutf8andsize
+        from _testcapi import unicode_asutf8andsize as asutf8andsize
+
+        strings = [
+            'abc', '\xa1\xa2\xa3', '\u4f60\u597d\u4e16',
+            '\U0001f600\U0001f601\U0001f602',
+            '\U0010ffff',
+        ]
+        for s in strings:
+            # Call PyUnicode_AsUTF8AndSize() which creates the UTF-8
+            # encoded string cached in the Unicode object.
+            asutf8andsize(s, 0)
+            b = s.encode()
+            self.assertEqual(equaltoutf8andsize(s, b), 1)  # Use the UTF-8 cache.
+            s2 = b.decode()  # New Unicode object without the UTF-8 cache.
+            self.assertEqual(equaltoutf8andsize(s2, b), 1)
+            self.assertEqual(equaltoutf8andsize(s + 'x', b + b'x'), 1)
+            self.assertEqual(equaltoutf8andsize(s + 'x', b + b'y'), 0)
+            self.assertEqual(equaltoutf8andsize(s, b + b'\0'), 0)
+            self.assertEqual(equaltoutf8andsize(s2, b + b'\0'), 0)
+            self.assertEqual(equaltoutf8andsize(s + '\0', b + b'\0'), 1)
+            self.assertEqual(equaltoutf8andsize(s + '\0', b), 0)
+            self.assertEqual(equaltoutf8andsize(s2, b + b'x'), 0)
+            self.assertEqual(equaltoutf8andsize(s2, b[:-1]), 0)
+            self.assertEqual(equaltoutf8andsize(s2, b[:-1] + b'x'), 0)
+            # Not null-terminated,
+            self.assertEqual(equaltoutf8andsize(s, b + b'x', len(b)), 1)
+            self.assertEqual(equaltoutf8andsize(s2, b + b'x', len(b)), 1)
+            self.assertEqual(equaltoutf8andsize(s + '\0', b + b'\0x', len(b) + 1), 1)
+            self.assertEqual(equaltoutf8andsize(s2, b, len(b) - 1), 0)
+            self.assertEqual(equaltoutf8andsize(s, b, -1), 0)
+            self.assertEqual(equaltoutf8andsize(s, b, PY_SSIZE_T_MAX), 0)
+            self.assertEqual(equaltoutf8andsize(s, b, PY_SSIZE_T_MIN), 0)
+
+        self.assertEqual(equaltoutf8andsize('', b''), 1)
+        self.assertEqual(equaltoutf8andsize('', b'\0'), 0)
+        self.assertEqual(equaltoutf8andsize('', b'x', 0), 1)
+
+        # embedded null chars/bytes
+        self.assertEqual(equaltoutf8andsize('abc\0def', b'abc\0def'), 1)
+        self.assertEqual(equaltoutf8andsize('abc\0def\0', b'abc\0def\0'), 1)
+
+        # Surrogate characters are always treated as not equal
+        self.assertEqual(equaltoutf8andsize('\udcfe',
+                            '\udcfe'.encode("utf8", "surrogateescape")), 0)
+        self.assertEqual(equaltoutf8andsize('\udcfe',
+                            '\udcfe'.encode("utf8", "surrogatepass")), 0)
+        self.assertEqual(equaltoutf8andsize('\ud801',
+                            '\ud801'.encode("utf8", "surrogatepass")), 0)
+
+        def check_not_equal_encoding(text, encoding):
+            self.assertEqual(equaltoutf8andsize(text, text.encode(encoding)), 0)
+            self.assertNotEqual(text.encode(encoding), text.encode("utf8"))
+
+        # Strings encoded to other encodings are not equal to expected UTF8-encoding string
+        check_not_equal_encoding('Stéphane', 'latin1')
+        check_not_equal_encoding('Stéphane', 'utf-16-le')  # embedded null characters
+        check_not_equal_encoding('北京市', 'gbk')
+
+        # CRASHES equaltoutf8andsize('abc', b'abc', -1)
+        # CRASHES equaltoutf8andsize(b'abc', b'abc')
+        # CRASHES equaltoutf8andsize([], b'abc')
+        # CRASHES equaltoutf8andsize(NULL, b'abc')
+        # CRASHES equaltoutf8andsize('abc', NULL)
+
     @support.cpython_only
     @unittest.skipIf(_testcapi is None, 'need _testcapi module')
     def test_richcompare(self):
@@ -1315,11 +1602,17 @@ def test_copycharacters(self):
 
         s = strings[0]
         self.assertRaises(IndexError, unicode_copycharacters, s, 6, s, 0, 5)
+        self.assertRaises(IndexError, unicode_copycharacters, s, PY_SSIZE_T_MAX, s, 0, 5)
         self.assertRaises(IndexError, unicode_copycharacters, s, -1, s, 0, 5)
+        self.assertRaises(IndexError, unicode_copycharacters, s, PY_SSIZE_T_MIN, s, 0, 5)
         self.assertRaises(IndexError, unicode_copycharacters, s, 0, s, 6, 5)
+        self.assertRaises(IndexError, unicode_copycharacters, s, 0, s, PY_SSIZE_T_MAX, 5)
         self.assertRaises(IndexError, unicode_copycharacters, s, 0, s, -1, 5)
+        self.assertRaises(IndexError, unicode_copycharacters, s, 0, s, PY_SSIZE_T_MIN, 5)
         self.assertRaises(SystemError, unicode_copycharacters, s, 1, s, 0, 5)
+        self.assertRaises(SystemError, unicode_copycharacters, s, 1, s, 0, PY_SSIZE_T_MAX)
         self.assertRaises(SystemError, unicode_copycharacters, s, 0, s, 0, -1)
+        self.assertRaises(SystemError, unicode_copycharacters, s, 0, s, 0, PY_SSIZE_T_MIN)
         self.assertRaises(SystemError, unicode_copycharacters, s, 0, b'', 0, 0)
         self.assertRaises(SystemError, unicode_copycharacters, s, 0, [], 0, 0)
         # CRASHES unicode_copycharacters(s, 0, NULL, 0, 0)
diff --git a/Lib/test/test_capi/test_watchers.py b/Lib/test/test_capi/test_watchers.py
index 93f6ef752d0663..5981712c80c3a9 100644
--- a/Lib/test/test_capi/test_watchers.py
+++ b/Lib/test/test_capi/test_watchers.py
@@ -110,9 +110,11 @@ def test_error(self):
             with catch_unraisable_exception() as cm:
                 d["foo"] = "bar"
                 self.assertIn(
-                    "PyDict_EVENT_ADDED watcher callback for <dict at",
-                    cm.unraisable.object
+                    "Exception ignored in "
+                    "PyDict_EVENT_ADDED watcher callback for <dict at ",
+                    cm.unraisable.err_msg
                 )
+                self.assertIsNone(cm.unraisable.object)
                 self.assertEqual(str(cm.unraisable.exc_value), "boom!")
             self.assert_events([])
 
@@ -278,7 +280,9 @@ class C: pass
             self.watch(wid, C)
             with catch_unraisable_exception() as cm:
                 C.foo = "bar"
-                self.assertIs(cm.unraisable.object, C)
+                self.assertEqual(cm.unraisable.err_msg,
+                    f"Exception ignored in type watcher callback #0 for {C!r}")
+                self.assertIs(cm.unraisable.object, None)
                 self.assertEqual(str(cm.unraisable.exc_value), "boom!")
             self.assert_events([])
 
@@ -294,6 +298,18 @@ class C2: pass
                 C2.hmm = "baz"
                 self.assert_events([C1, [C2]])
 
+    def test_all_watchers(self):
+        class C: pass
+        with ExitStack() as stack:
+            last_wid = -1
+            # don't make assumptions about how many watchers are already
+            # registered, just go until we reach the max ID
+            while last_wid < self.TYPE_MAX_WATCHERS - 1:
+                last_wid = stack.enter_context(self.watcher())
+            self.watch(last_wid, C)
+            C.foo = "bar"
+            self.assert_events([C])
+
     def test_watch_non_type(self):
         with self.watcher() as wid:
             with self.assertRaisesRegex(ValueError, r"Cannot watch non-type"):
@@ -339,12 +355,10 @@ def test_clear_unassigned_watcher_id(self):
             self.clear_watcher(1)
 
     def test_no_more_ids_available(self):
-        contexts = [self.watcher() for i in range(self.TYPE_MAX_WATCHERS)]
-        with ExitStack() as stack:
-            for ctx in contexts:
-                stack.enter_context(ctx)
-            with self.assertRaisesRegex(RuntimeError, r"no more type watcher IDs"):
-                self.add_watcher()
+        with self.assertRaisesRegex(RuntimeError, r"no more type watcher IDs"):
+            with ExitStack() as stack:
+                for _ in range(self.TYPE_MAX_WATCHERS + 1):
+                    stack.enter_context(self.watcher())
 
 
 class TestCodeObjectWatchers(unittest.TestCase):
@@ -406,9 +420,11 @@ def test_error(self):
                 co = _testcapi.code_newempty("test_watchers", "dummy0", 0)
 
                 self.assertEqual(
-                    cm.unraisable.object,
+                    cm.unraisable.err_msg,
+                    f"Exception ignored in "
                     f"PY_CODE_EVENT_CREATE watcher callback for {co!r}"
                 )
+                self.assertIsNone(cm.unraisable.object)
                 self.assertEqual(str(cm.unraisable.exc_value), "boom!")
 
     def test_dealloc_error(self):
@@ -510,9 +526,11 @@ def myfunc():
                     pass
 
                 self.assertEqual(
-                    cm.unraisable.object,
-                    f"PyFunction_EVENT_CREATE watcher callback for {myfunc!r}"
+                    cm.unraisable.err_msg,
+                    f"Exception ignored in "
+                    f"PyFunction_EVENT_CREATE watcher callback for {repr(myfunc)[1:-1]}"
                 )
+                self.assertIsNone(cm.unraisable.object)
 
     def test_dealloc_watcher_raises_error(self):
         class MyError(Exception):
diff --git a/Lib/test/test_cgi.py b/Lib/test/test_cgi.py
deleted file mode 100644
index 24486e4d95a783..00000000000000
--- a/Lib/test/test_cgi.py
+++ /dev/null
@@ -1,641 +0,0 @@
-import os
-import sys
-import tempfile
-import unittest
-from collections import namedtuple
-from io import StringIO, BytesIO
-from test import support
-from test.support import warnings_helper
-
-cgi = warnings_helper.import_deprecated("cgi")
-
-
-class HackedSysModule:
-    # The regression test will have real values in sys.argv, which
-    # will completely confuse the test of the cgi module
-    argv = []
-    stdin = sys.stdin
-
-cgi.sys = HackedSysModule()
-
-class ComparableException:
-    def __init__(self, err):
-        self.err = err
-
-    def __str__(self):
-        return str(self.err)
-
-    def __eq__(self, anExc):
-        if not isinstance(anExc, Exception):
-            return NotImplemented
-        return (self.err.__class__ == anExc.__class__ and
-                self.err.args == anExc.args)
-
-    def __getattr__(self, attr):
-        return getattr(self.err, attr)
-
-def do_test(buf, method):
-    env = {}
-    if method == "GET":
-        fp = None
-        env['REQUEST_METHOD'] = 'GET'
-        env['QUERY_STRING'] = buf
-    elif method == "POST":
-        fp = BytesIO(buf.encode('latin-1')) # FieldStorage expects bytes
-        env['REQUEST_METHOD'] = 'POST'
-        env['CONTENT_TYPE'] = 'application/x-www-form-urlencoded'
-        env['CONTENT_LENGTH'] = str(len(buf))
-    else:
-        raise ValueError("unknown method: %s" % method)
-    try:
-        return cgi.parse(fp, env, strict_parsing=1)
-    except Exception as err:
-        return ComparableException(err)
-
-parse_strict_test_cases = [
-    ("", {}),
-    ("&", ValueError("bad query field: ''")),
-    ("&&", ValueError("bad query field: ''")),
-    # Should the next few really be valid?
-    ("=", {}),
-    ("=&=", {}),
-    # This rest seem to make sense
-    ("=a", {'': ['a']}),
-    ("&=a", ValueError("bad query field: ''")),
-    ("=a&", ValueError("bad query field: ''")),
-    ("=&a", ValueError("bad query field: 'a'")),
-    ("b=a", {'b': ['a']}),
-    ("b+=a", {'b ': ['a']}),
-    ("a=b=a", {'a': ['b=a']}),
-    ("a=+b=a", {'a': [' b=a']}),
-    ("&b=a", ValueError("bad query field: ''")),
-    ("b&=a", ValueError("bad query field: 'b'")),
-    ("a=a+b&b=b+c", {'a': ['a b'], 'b': ['b c']}),
-    ("a=a+b&a=b+a", {'a': ['a b', 'b a']}),
-    ("x=1&y=2.0&z=2-3.%2b0", {'x': ['1'], 'y': ['2.0'], 'z': ['2-3.+0']}),
-    ("Hbc5161168c542333633315dee1182227:key_store_seqid=400006&cuyer=r&view=bustomer&order_id=0bb2e248638833d48cb7fed300000f1b&expire=964546263&lobale=en-US&kid=130003.300038&ss=env",
-     {'Hbc5161168c542333633315dee1182227:key_store_seqid': ['400006'],
-      'cuyer': ['r'],
-      'expire': ['964546263'],
-      'kid': ['130003.300038'],
-      'lobale': ['en-US'],
-      'order_id': ['0bb2e248638833d48cb7fed300000f1b'],
-      'ss': ['env'],
-      'view': ['bustomer'],
-      }),
-
-    ("group_id=5470&set=custom&_assigned_to=31392&_status=1&_category=100&SUBMIT=Browse",
-     {'SUBMIT': ['Browse'],
-      '_assigned_to': ['31392'],
-      '_category': ['100'],
-      '_status': ['1'],
-      'group_id': ['5470'],
-      'set': ['custom'],
-      })
-    ]
-
-def norm(seq):
-    return sorted(seq, key=repr)
-
-def first_elts(list):
-    return [p[0] for p in list]
-
-def first_second_elts(list):
-    return [(p[0], p[1][0]) for p in list]
-
-def gen_result(data, environ):
-    encoding = 'latin-1'
-    fake_stdin = BytesIO(data.encode(encoding))
-    fake_stdin.seek(0)
-    form = cgi.FieldStorage(fp=fake_stdin, environ=environ, encoding=encoding)
-
-    result = {}
-    for k, v in dict(form).items():
-        result[k] = isinstance(v, list) and form.getlist(k) or v.value
-
-    return result
-
-class CgiTests(unittest.TestCase):
-
-    def test_parse_multipart(self):
-        fp = BytesIO(POSTDATA.encode('latin1'))
-        env = {'boundary': BOUNDARY.encode('latin1'),
-               'CONTENT-LENGTH': '558'}
-        result = cgi.parse_multipart(fp, env)
-        expected = {'submit': [' Add '], 'id': ['1234'],
-                    'file': [b'Testing 123.\n'], 'title': ['']}
-        self.assertEqual(result, expected)
-
-    def test_parse_multipart_without_content_length(self):
-        POSTDATA = '''--JfISa01
-Content-Disposition: form-data; name="submit-name"
-
-just a string
-
---JfISa01--
-'''
-        fp = BytesIO(POSTDATA.encode('latin1'))
-        env = {'boundary': 'JfISa01'.encode('latin1')}
-        result = cgi.parse_multipart(fp, env)
-        expected = {'submit-name': ['just a string\n']}
-        self.assertEqual(result, expected)
-
-    def test_parse_multipart_invalid_encoding(self):
-        BOUNDARY = "JfISa01"
-        POSTDATA = """--JfISa01
-Content-Disposition: form-data; name="submit-name"
-Content-Length: 3
-
-\u2603
---JfISa01"""
-        fp = BytesIO(POSTDATA.encode('utf8'))
-        env = {'boundary': BOUNDARY.encode('latin1'),
-               'CONTENT-LENGTH': str(len(POSTDATA.encode('utf8')))}
-        result = cgi.parse_multipart(fp, env, encoding="ascii",
-                                     errors="surrogateescape")
-        expected = {'submit-name': ["\udce2\udc98\udc83"]}
-        self.assertEqual(result, expected)
-        self.assertEqual("\u2603".encode('utf8'),
-                         result["submit-name"][0].encode('utf8', 'surrogateescape'))
-
-    def test_fieldstorage_properties(self):
-        fs = cgi.FieldStorage()
-        self.assertFalse(fs)
-        self.assertIn("FieldStorage", repr(fs))
-        self.assertEqual(list(fs), list(fs.keys()))
-        fs.list.append(namedtuple('MockFieldStorage', 'name')('fieldvalue'))
-        self.assertTrue(fs)
-
-    def test_fieldstorage_invalid(self):
-        self.assertRaises(TypeError, cgi.FieldStorage, "not-a-file-obj",
-                                                            environ={"REQUEST_METHOD":"PUT"})
-        self.assertRaises(TypeError, cgi.FieldStorage, "foo", "bar")
-        fs = cgi.FieldStorage(headers={'content-type':'text/plain'})
-        self.assertRaises(TypeError, bool, fs)
-
-    def test_strict(self):
-        for orig, expect in parse_strict_test_cases:
-            # Test basic parsing
-            d = do_test(orig, "GET")
-            self.assertEqual(d, expect, "Error parsing %s method GET" % repr(orig))
-            d = do_test(orig, "POST")
-            self.assertEqual(d, expect, "Error parsing %s method POST" % repr(orig))
-
-            env = {'QUERY_STRING': orig}
-            fs = cgi.FieldStorage(environ=env)
-            if isinstance(expect, dict):
-                # test dict interface
-                self.assertEqual(len(expect), len(fs))
-                self.assertCountEqual(expect.keys(), fs.keys())
-                ##self.assertEqual(norm(expect.values()), norm(fs.values()))
-                ##self.assertEqual(norm(expect.items()), norm(fs.items()))
-                self.assertEqual(fs.getvalue("nonexistent field", "default"), "default")
-                # test individual fields
-                for key in expect.keys():
-                    expect_val = expect[key]
-                    self.assertIn(key, fs)
-                    if len(expect_val) > 1:
-                        self.assertEqual(fs.getvalue(key), expect_val)
-                    else:
-                        self.assertEqual(fs.getvalue(key), expect_val[0])
-
-    def test_separator(self):
-        parse_semicolon = [
-            ("x=1;y=2.0", {'x': ['1'], 'y': ['2.0']}),
-            ("x=1;y=2.0;z=2-3.%2b0", {'x': ['1'], 'y': ['2.0'], 'z': ['2-3.+0']}),
-            (";", ValueError("bad query field: ''")),
-            (";;", ValueError("bad query field: ''")),
-            ("=;a", ValueError("bad query field: 'a'")),
-            (";b=a", ValueError("bad query field: ''")),
-            ("b;=a", ValueError("bad query field: 'b'")),
-            ("a=a+b;b=b+c", {'a': ['a b'], 'b': ['b c']}),
-            ("a=a+b;a=b+a", {'a': ['a b', 'b a']}),
-        ]
-        for orig, expect in parse_semicolon:
-            env = {'QUERY_STRING': orig}
-            fs = cgi.FieldStorage(separator=';', environ=env)
-            if isinstance(expect, dict):
-                for key in expect.keys():
-                    expect_val = expect[key]
-                    self.assertIn(key, fs)
-                    if len(expect_val) > 1:
-                        self.assertEqual(fs.getvalue(key), expect_val)
-                    else:
-                        self.assertEqual(fs.getvalue(key), expect_val[0])
-
-    @warnings_helper.ignore_warnings(category=DeprecationWarning)
-    def test_log(self):
-        cgi.log("Testing")
-
-        cgi.logfp = StringIO()
-        cgi.initlog("%s", "Testing initlog 1")
-        cgi.log("%s", "Testing log 2")
-        self.assertEqual(cgi.logfp.getvalue(), "Testing initlog 1\nTesting log 2\n")
-        if os.path.exists(os.devnull):
-            cgi.logfp = None
-            cgi.logfile = os.devnull
-            cgi.initlog("%s", "Testing log 3")
-            self.addCleanup(cgi.closelog)
-            cgi.log("Testing log 4")
-
-    def test_fieldstorage_readline(self):
-        # FieldStorage uses readline, which has the capacity to read all
-        # contents of the input file into memory; we use readline's size argument
-        # to prevent that for files that do not contain any newlines in
-        # non-GET/HEAD requests
-        class TestReadlineFile:
-            def __init__(self, file):
-                self.file = file
-                self.numcalls = 0
-
-            def readline(self, size=None):
-                self.numcalls += 1
-                if size:
-                    return self.file.readline(size)
-                else:
-                    return self.file.readline()
-
-            def __getattr__(self, name):
-                file = self.__dict__['file']
-                a = getattr(file, name)
-                if not isinstance(a, int):
-                    setattr(self, name, a)
-                return a
-
-        f = TestReadlineFile(tempfile.TemporaryFile("wb+"))
-        self.addCleanup(f.close)
-        f.write(b'x' * 256 * 1024)
-        f.seek(0)
-        env = {'REQUEST_METHOD':'PUT'}
-        fs = cgi.FieldStorage(fp=f, environ=env)
-        self.addCleanup(fs.file.close)
-        # if we're not chunking properly, readline is only called twice
-        # (by read_binary); if we are chunking properly, it will be called 5 times
-        # as long as the chunksize is 1 << 16.
-        self.assertGreater(f.numcalls, 2)
-        f.close()
-
-    def test_fieldstorage_multipart(self):
-        #Test basic FieldStorage multipart parsing
-        env = {
-            'REQUEST_METHOD': 'POST',
-            'CONTENT_TYPE': 'multipart/form-data; boundary={}'.format(BOUNDARY),
-            'CONTENT_LENGTH': '558'}
-        fp = BytesIO(POSTDATA.encode('latin-1'))
-        fs = cgi.FieldStorage(fp, environ=env, encoding="latin-1")
-        self.assertEqual(len(fs.list), 4)
-        expect = [{'name':'id', 'filename':None, 'value':'1234'},
-                  {'name':'title', 'filename':None, 'value':''},
-                  {'name':'file', 'filename':'test.txt', 'value':b'Testing 123.\n'},
-                  {'name':'submit', 'filename':None, 'value':' Add '}]
-        for x in range(len(fs.list)):
-            for k, exp in expect[x].items():
-                got = getattr(fs.list[x], k)
-                self.assertEqual(got, exp)
-
-    def test_fieldstorage_multipart_leading_whitespace(self):
-        env = {
-            'REQUEST_METHOD': 'POST',
-            'CONTENT_TYPE': 'multipart/form-data; boundary={}'.format(BOUNDARY),
-            'CONTENT_LENGTH': '560'}
-        # Add some leading whitespace to our post data that will cause the
-        # first line to not be the innerboundary.
-        fp = BytesIO(b"\r\n" + POSTDATA.encode('latin-1'))
-        fs = cgi.FieldStorage(fp, environ=env, encoding="latin-1")
-        self.assertEqual(len(fs.list), 4)
-        expect = [{'name':'id', 'filename':None, 'value':'1234'},
-                  {'name':'title', 'filename':None, 'value':''},
-                  {'name':'file', 'filename':'test.txt', 'value':b'Testing 123.\n'},
-                  {'name':'submit', 'filename':None, 'value':' Add '}]
-        for x in range(len(fs.list)):
-            for k, exp in expect[x].items():
-                got = getattr(fs.list[x], k)
-                self.assertEqual(got, exp)
-
-    def test_fieldstorage_multipart_non_ascii(self):
-        #Test basic FieldStorage multipart parsing
-        env = {'REQUEST_METHOD':'POST',
-            'CONTENT_TYPE': 'multipart/form-data; boundary={}'.format(BOUNDARY),
-            'CONTENT_LENGTH':'558'}
-        for encoding in ['iso-8859-1','utf-8']:
-            fp = BytesIO(POSTDATA_NON_ASCII.encode(encoding))
-            fs = cgi.FieldStorage(fp, environ=env,encoding=encoding)
-            self.assertEqual(len(fs.list), 1)
-            expect = [{'name':'id', 'filename':None, 'value':'\xe7\xf1\x80'}]
-            for x in range(len(fs.list)):
-                for k, exp in expect[x].items():
-                    got = getattr(fs.list[x], k)
-                    self.assertEqual(got, exp)
-
-    def test_fieldstorage_multipart_maxline(self):
-        # Issue #18167
-        maxline = 1 << 16
-        self.maxDiff = None
-        def check(content):
-            data = """---123
-Content-Disposition: form-data; name="upload"; filename="fake.txt"
-Content-Type: text/plain
-
-%s
----123--
-""".replace('\n', '\r\n') % content
-            environ = {
-                'CONTENT_LENGTH':   str(len(data)),
-                'CONTENT_TYPE':     'multipart/form-data; boundary=-123',
-                'REQUEST_METHOD':   'POST',
-            }
-            self.assertEqual(gen_result(data, environ),
-                             {'upload': content.encode('latin1')})
-        check('x' * (maxline - 1))
-        check('x' * (maxline - 1) + '\r')
-        check('x' * (maxline - 1) + '\r' + 'y' * (maxline - 1))
-
-    def test_fieldstorage_multipart_w3c(self):
-        # Test basic FieldStorage multipart parsing (W3C sample)
-        env = {
-            'REQUEST_METHOD': 'POST',
-            'CONTENT_TYPE': 'multipart/form-data; boundary={}'.format(BOUNDARY_W3),
-            'CONTENT_LENGTH': str(len(POSTDATA_W3))}
-        fp = BytesIO(POSTDATA_W3.encode('latin-1'))
-        fs = cgi.FieldStorage(fp, environ=env, encoding="latin-1")
-        self.assertEqual(len(fs.list), 2)
-        self.assertEqual(fs.list[0].name, 'submit-name')
-        self.assertEqual(fs.list[0].value, 'Larry')
-        self.assertEqual(fs.list[1].name, 'files')
-        files = fs.list[1].value
-        self.assertEqual(len(files), 2)
-        expect = [{'name': None, 'filename': 'file1.txt', 'value': b'... contents of file1.txt ...'},
-                  {'name': None, 'filename': 'file2.gif', 'value': b'...contents of file2.gif...'}]
-        for x in range(len(files)):
-            for k, exp in expect[x].items():
-                got = getattr(files[x], k)
-                self.assertEqual(got, exp)
-
-    def test_fieldstorage_part_content_length(self):
-        BOUNDARY = "JfISa01"
-        POSTDATA = """--JfISa01
-Content-Disposition: form-data; name="submit-name"
-Content-Length: 5
-
-Larry
---JfISa01"""
-        env = {
-            'REQUEST_METHOD': 'POST',
-            'CONTENT_TYPE': 'multipart/form-data; boundary={}'.format(BOUNDARY),
-            'CONTENT_LENGTH': str(len(POSTDATA))}
-        fp = BytesIO(POSTDATA.encode('latin-1'))
-        fs = cgi.FieldStorage(fp, environ=env, encoding="latin-1")
-        self.assertEqual(len(fs.list), 1)
-        self.assertEqual(fs.list[0].name, 'submit-name')
-        self.assertEqual(fs.list[0].value, 'Larry')
-
-    def test_field_storage_multipart_no_content_length(self):
-        fp = BytesIO(b"""--MyBoundary
-Content-Disposition: form-data; name="my-arg"; filename="foo"
-
-Test
-
---MyBoundary--
-""")
-        env = {
-            "REQUEST_METHOD": "POST",
-            "CONTENT_TYPE": "multipart/form-data; boundary=MyBoundary",
-            "wsgi.input": fp,
-        }
-        fields = cgi.FieldStorage(fp, environ=env)
-
-        self.assertEqual(len(fields["my-arg"].file.read()), 5)
-
-    def test_fieldstorage_as_context_manager(self):
-        fp = BytesIO(b'x' * 10)
-        env = {'REQUEST_METHOD': 'PUT'}
-        with cgi.FieldStorage(fp=fp, environ=env) as fs:
-            content = fs.file.read()
-            self.assertFalse(fs.file.closed)
-        self.assertTrue(fs.file.closed)
-        self.assertEqual(content, 'x' * 10)
-        with self.assertRaisesRegex(ValueError, 'I/O operation on closed file'):
-            fs.file.read()
-
-    _qs_result = {
-        'key1': 'value1',
-        'key2': ['value2x', 'value2y'],
-        'key3': 'value3',
-        'key4': 'value4'
-    }
-    def testQSAndUrlEncode(self):
-        data = "key2=value2x&key3=value3&key4=value4"
-        environ = {
-            'CONTENT_LENGTH':   str(len(data)),
-            'CONTENT_TYPE':     'application/x-www-form-urlencoded',
-            'QUERY_STRING':     'key1=value1&key2=value2y',
-            'REQUEST_METHOD':   'POST',
-        }
-        v = gen_result(data, environ)
-        self.assertEqual(self._qs_result, v)
-
-    def test_max_num_fields(self):
-        # For application/x-www-form-urlencoded
-        data = '&'.join(['a=a']*11)
-        environ = {
-            'CONTENT_LENGTH': str(len(data)),
-            'CONTENT_TYPE': 'application/x-www-form-urlencoded',
-            'REQUEST_METHOD': 'POST',
-        }
-
-        with self.assertRaises(ValueError):
-            cgi.FieldStorage(
-                fp=BytesIO(data.encode()),
-                environ=environ,
-                max_num_fields=10,
-            )
-
-        # For multipart/form-data
-        data = """---123
-Content-Disposition: form-data; name="a"
-
-3
----123
-Content-Type: application/x-www-form-urlencoded
-
-a=4
----123
-Content-Type: application/x-www-form-urlencoded
-
-a=5
----123--
-"""
-        environ = {
-            'CONTENT_LENGTH':   str(len(data)),
-            'CONTENT_TYPE':     'multipart/form-data; boundary=-123',
-            'QUERY_STRING':     'a=1&a=2',
-            'REQUEST_METHOD':   'POST',
-        }
-
-        # 2 GET entities
-        # 1 top level POST entities
-        # 1 entity within the second POST entity
-        # 1 entity within the third POST entity
-        with self.assertRaises(ValueError):
-            cgi.FieldStorage(
-                fp=BytesIO(data.encode()),
-                environ=environ,
-                max_num_fields=4,
-            )
-        cgi.FieldStorage(
-            fp=BytesIO(data.encode()),
-            environ=environ,
-            max_num_fields=5,
-        )
-
-    def testQSAndFormData(self):
-        data = """---123
-Content-Disposition: form-data; name="key2"
-
-value2y
----123
-Content-Disposition: form-data; name="key3"
-
-value3
----123
-Content-Disposition: form-data; name="key4"
-
-value4
----123--
-"""
-        environ = {
-            'CONTENT_LENGTH':   str(len(data)),
-            'CONTENT_TYPE':     'multipart/form-data; boundary=-123',
-            'QUERY_STRING':     'key1=value1&key2=value2x',
-            'REQUEST_METHOD':   'POST',
-        }
-        v = gen_result(data, environ)
-        self.assertEqual(self._qs_result, v)
-
-    def testQSAndFormDataFile(self):
-        data = """---123
-Content-Disposition: form-data; name="key2"
-
-value2y
----123
-Content-Disposition: form-data; name="key3"
-
-value3
----123
-Content-Disposition: form-data; name="key4"
-
-value4
----123
-Content-Disposition: form-data; name="upload"; filename="fake.txt"
-Content-Type: text/plain
-
-this is the content of the fake file
-
----123--
-"""
-        environ = {
-            'CONTENT_LENGTH':   str(len(data)),
-            'CONTENT_TYPE':     'multipart/form-data; boundary=-123',
-            'QUERY_STRING':     'key1=value1&key2=value2x',
-            'REQUEST_METHOD':   'POST',
-        }
-        result = self._qs_result.copy()
-        result.update({
-            'upload': b'this is the content of the fake file\n'
-        })
-        v = gen_result(data, environ)
-        self.assertEqual(result, v)
-
-    def test_parse_header(self):
-        self.assertEqual(
-            cgi.parse_header("text/plain"),
-            ("text/plain", {}))
-        self.assertEqual(
-            cgi.parse_header("text/vnd.just.made.this.up ; "),
-            ("text/vnd.just.made.this.up", {}))
-        self.assertEqual(
-            cgi.parse_header("text/plain;charset=us-ascii"),
-            ("text/plain", {"charset": "us-ascii"}))
-        self.assertEqual(
-            cgi.parse_header('text/plain ; charset="us-ascii"'),
-            ("text/plain", {"charset": "us-ascii"}))
-        self.assertEqual(
-            cgi.parse_header('text/plain ; charset="us-ascii"; another=opt'),
-            ("text/plain", {"charset": "us-ascii", "another": "opt"}))
-        self.assertEqual(
-            cgi.parse_header('attachment; filename="silly.txt"'),
-            ("attachment", {"filename": "silly.txt"}))
-        self.assertEqual(
-            cgi.parse_header('attachment; filename="strange;name"'),
-            ("attachment", {"filename": "strange;name"}))
-        self.assertEqual(
-            cgi.parse_header('attachment; filename="strange;name";size=123;'),
-            ("attachment", {"filename": "strange;name", "size": "123"}))
-        self.assertEqual(
-            cgi.parse_header('form-data; name="files"; filename="fo\\"o;bar"'),
-            ("form-data", {"name": "files", "filename": 'fo"o;bar'}))
-
-    def test_all(self):
-        not_exported = {
-            "logfile", "logfp", "initlog", "dolog", "nolog", "closelog", "log",
-            "maxlen", "valid_boundary"}
-        support.check__all__(self, cgi, not_exported=not_exported)
-
-
-BOUNDARY = "---------------------------721837373350705526688164684"
-
-POSTDATA = """-----------------------------721837373350705526688164684
-Content-Disposition: form-data; name="id"
-
-1234
------------------------------721837373350705526688164684
-Content-Disposition: form-data; name="title"
-
-
------------------------------721837373350705526688164684
-Content-Disposition: form-data; name="file"; filename="test.txt"
-Content-Type: text/plain
-
-Testing 123.
-
------------------------------721837373350705526688164684
-Content-Disposition: form-data; name="submit"
-
- Add\x20
------------------------------721837373350705526688164684--
-"""
-
-POSTDATA_NON_ASCII = """-----------------------------721837373350705526688164684
-Content-Disposition: form-data; name="id"
-
-\xe7\xf1\x80
------------------------------721837373350705526688164684
-"""
-
-# http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4
-BOUNDARY_W3 = "AaB03x"
-POSTDATA_W3 = """--AaB03x
-Content-Disposition: form-data; name="submit-name"
-
-Larry
---AaB03x
-Content-Disposition: form-data; name="files"
-Content-Type: multipart/mixed; boundary=BbC04y
-
---BbC04y
-Content-Disposition: file; filename="file1.txt"
-Content-Type: text/plain
-
-... contents of file1.txt ...
---BbC04y
-Content-Disposition: file; filename="file2.gif"
-Content-Type: image/gif
-Content-Transfer-Encoding: binary
-
-...contents of file2.gif...
---BbC04y--
---AaB03x--
-"""
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_cgitb.py b/Lib/test/test_cgitb.py
deleted file mode 100644
index 501c7fcce28e88..00000000000000
--- a/Lib/test/test_cgitb.py
+++ /dev/null
@@ -1,71 +0,0 @@
-from test.support.os_helper import temp_dir
-from test.support.script_helper import assert_python_failure
-from test.support.warnings_helper import import_deprecated
-import unittest
-import sys
-cgitb = import_deprecated("cgitb")
-
-class TestCgitb(unittest.TestCase):
-
-    def test_fonts(self):
-        text = "Hello Robbie!"
-        self.assertEqual(cgitb.small(text), "<small>{}</small>".format(text))
-        self.assertEqual(cgitb.strong(text), "<strong>{}</strong>".format(text))
-        self.assertEqual(cgitb.grey(text),
-                         '<font color="#909090">{}</font>'.format(text))
-
-    def test_blanks(self):
-        self.assertEqual(cgitb.small(""), "")
-        self.assertEqual(cgitb.strong(""), "")
-        self.assertEqual(cgitb.grey(""), "")
-
-    def test_html(self):
-        try:
-            raise ValueError("Hello World")
-        except ValueError as err:
-            # If the html was templated we could do a bit more here.
-            # At least check that we get details on what we just raised.
-            html = cgitb.html(sys.exc_info())
-            self.assertIn("ValueError", html)
-            self.assertIn(str(err), html)
-
-    def test_text(self):
-        try:
-            raise ValueError("Hello World")
-        except ValueError:
-            text = cgitb.text(sys.exc_info())
-            self.assertIn("ValueError", text)
-            self.assertIn("Hello World", text)
-
-    def test_syshook_no_logdir_default_format(self):
-        with temp_dir() as tracedir:
-            rc, out, err = assert_python_failure(
-                  '-c',
-                  ('import cgitb; cgitb.enable(logdir=%s); '
-                   'raise ValueError("Hello World")') % repr(tracedir),
-                  PYTHONIOENCODING='utf-8')
-        out = out.decode()
-        self.assertIn("ValueError", out)
-        self.assertIn("Hello World", out)
-        self.assertIn("<strong>&lt;module&gt;</strong>", out)
-        # By default we emit HTML markup.
-        self.assertIn('<p>', out)
-        self.assertIn('</p>', out)
-
-    def test_syshook_no_logdir_text_format(self):
-        # Issue 12890: we were emitting the <p> tag in text mode.
-        with temp_dir() as tracedir:
-            rc, out, err = assert_python_failure(
-                  '-c',
-                  ('import cgitb; cgitb.enable(format="text", logdir=%s); '
-                   'raise ValueError("Hello World")') % repr(tracedir),
-                  PYTHONIOENCODING='utf-8')
-        out = out.decode()
-        self.assertIn("ValueError", out)
-        self.assertIn("Hello World", out)
-        self.assertNotIn('<p>', out)
-        self.assertNotIn('</p>', out)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_class.py b/Lib/test/test_class.py
index d7a48e55b10180..1531aad4f1f779 100644
--- a/Lib/test/test_class.py
+++ b/Lib/test/test_class.py
@@ -455,8 +455,8 @@ def __init__(self):
                 self.attr = 1
 
         a = A()
-        self.assertEqual(_testcapi.hasattr_string(a, "attr"), True)
-        self.assertEqual(_testcapi.hasattr_string(a, "noattr"), False)
+        self.assertEqual(_testcapi.object_hasattrstring(a, b"attr"), 1)
+        self.assertEqual(_testcapi.object_hasattrstring(a, b"noattr"), 0)
         self.assertIsNone(sys.exception())
 
     def testDel(self):
@@ -641,6 +641,14 @@ class A:
         class B:
             y = 0
             __slots__ = ('z',)
+        class C:
+            __slots__ = ("y",)
+
+            def __setattr__(self, name, value) -> None:
+                if name == "z":
+                    super().__setattr__("y", 1)
+                else:
+                    super().__setattr__(name, value)
 
         error_msg = "'A' object has no attribute 'x'"
         with self.assertRaisesRegex(AttributeError, error_msg):
@@ -653,8 +661,16 @@ class B:
             B().x
         with self.assertRaisesRegex(AttributeError, error_msg):
             del B().x
-        with self.assertRaisesRegex(AttributeError, error_msg):
+        with self.assertRaisesRegex(
+            AttributeError,
+            "'B' object has no attribute 'x' and no __dict__ for setting new attributes"
+        ):
             B().x = 0
+        with self.assertRaisesRegex(
+            AttributeError,
+            "'C' object has no attribute 'x'"
+        ):
+            C().x = 0
 
         error_msg = "'B' object attribute 'y' is read-only"
         with self.assertRaisesRegex(AttributeError, error_msg):
@@ -740,6 +756,21 @@ class A(0, 1, 2, 3, 4, 5, 6, 7, **d): pass
         class A(0, *range(1, 8), **d, foo='bar'): pass
         self.assertEqual(A, (tuple(range(8)), {'foo': 'bar'}))
 
+    def testClassCallRecursionLimit(self):
+        class C:
+            def __init__(self):
+                self.c = C()
+
+        with self.assertRaises(RecursionError):
+            C()
+
+        def add_one_level():
+            #Each call to C() consumes 2 levels, so offset by 1.
+            C()
+
+        with self.assertRaises(RecursionError):
+            add_one_level()
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_clinic.py b/Lib/test/test_clinic.py
index 28d9f650926427..f53e9481083106 100644
--- a/Lib/test/test_clinic.py
+++ b/Lib/test/test_clinic.py
@@ -2,12 +2,16 @@
 # Copyright 2012-2013 by Larry Hastings.
 # Licensed to the PSF under a contributor agreement.
 
+from functools import partial
 from test import support, test_tools
-from test.support import import_helper, os_helper
+from test.support import os_helper
+from test.support.os_helper import TESTFN, unlink
+from textwrap import dedent
 from unittest import TestCase
-import collections
+import contextlib
 import inspect
 import os.path
+import re
 import sys
 import unittest
 
@@ -17,77 +21,47 @@
     from clinic import DSLParser
 
 
-class FakeConverter:
-    def __init__(self, name, args):
-        self.name = name
-        self.args = args
-
-
-class FakeConverterFactory:
-    def __init__(self, name):
-        self.name = name
-
-    def __call__(self, name, default, **kwargs):
-        return FakeConverter(self.name, kwargs)
-
-
-class FakeConvertersDict:
-    def __init__(self):
-        self.used_converters = {}
-
-    def get(self, name, default):
-        return self.used_converters.setdefault(name, FakeConverterFactory(name))
-
-c = clinic.Clinic(language='C', filename = "file")
-
-class FakeClinic:
-    def __init__(self):
-        self.converters = FakeConvertersDict()
-        self.legacy_converters = FakeConvertersDict()
-        self.language = clinic.CLanguage(None)
-        self.filename = None
-        self.destination_buffers = {}
-        self.block_parser = clinic.BlockParser('', self.language)
-        self.modules = collections.OrderedDict()
-        self.classes = collections.OrderedDict()
-        clinic.clinic = self
-        self.name = "FakeClinic"
-        self.line_prefix = self.line_suffix = ''
-        self.destinations = {}
-        self.add_destination("block", "buffer")
-        self.add_destination("file", "buffer")
-        self.add_destination("suppress", "suppress")
-        d = self.destinations.get
-        self.field_destinations = collections.OrderedDict((
-            ('docstring_prototype', d('suppress')),
-            ('docstring_definition', d('block')),
-            ('methoddef_define', d('block')),
-            ('impl_prototype', d('block')),
-            ('parser_prototype', d('suppress')),
-            ('parser_definition', d('block')),
-            ('impl_definition', d('block')),
-        ))
-
-    def get_destination(self, name):
-        d = self.destinations.get(name)
-        if not d:
-            sys.exit("Destination does not exist: " + repr(name))
-        return d
-
-    def add_destination(self, name, type, *args):
-        if name in self.destinations:
-            sys.exit("Destination already exists: " + repr(name))
-        self.destinations[name] = clinic.Destination(name, type, self, *args)
-
-    def is_directive(self, name):
-        return name == "module"
-
-    def directive(self, name, args):
-        self.called_directives[name] = args
-
-    _module_and_class = clinic.Clinic._module_and_class
+def _make_clinic(*, filename='clinic_tests'):
+    clang = clinic.CLanguage(None)
+    c = clinic.Clinic(clang, filename=filename, limited_capi=False)
+    c.block_parser = clinic.BlockParser('', clang)
+    return c
+
+
+def _expect_failure(tc, parser, code, errmsg, *, filename=None, lineno=None,
+                    strip=True):
+    """Helper for the parser tests.
+
+    tc: unittest.TestCase; passed self in the wrapper
+    parser: the clinic parser used for this test case
+    code: a str with input text (clinic code)
+    errmsg: the expected error message
+    filename: str, optional filename
+    lineno: int, optional line number
+    """
+    code = dedent(code)
+    if strip:
+        code = code.strip()
+    errmsg = re.escape(errmsg)
+    with tc.assertRaisesRegex(clinic.ClinicError, errmsg) as cm:
+        parser(code)
+    if filename is not None:
+        tc.assertEqual(cm.exception.filename, filename)
+    if lineno is not None:
+        tc.assertEqual(cm.exception.lineno, lineno)
+    return cm.exception
+
 
 class ClinicWholeFileTest(TestCase):
+    maxDiff = None
+
+    def expect_failure(self, raw, errmsg, *, filename=None, lineno=None):
+        _expect_failure(self, self.clinic.parse, raw, errmsg,
+                        filename=filename, lineno=lineno)
+
+    def setUp(self):
+        self.clinic = _make_clinic(filename="test.c")
+
     def test_eol(self):
         # regression test:
         # clinic's block parser didn't recognize
@@ -97,16 +71,658 @@ def test_eol(self):
         # so it would spit out an end line for you.
         # and since you really already had one,
         # the last line of the block got corrupted.
-        c = clinic.Clinic(clinic.CLanguage(None), filename="file")
         raw = "/*[clinic]\nfoo\n[clinic]*/"
-        cooked, _ = c.parse(raw)
-        lines = cooked.splitlines()
-        end_line = lines[2].rstrip()
+        cooked = self.clinic.parse(raw).splitlines()
+        end_line = cooked[2].rstrip()
         # this test is redundant, it's just here explicitly to catch
         # the regression test so we don't forget what it looked like
         self.assertNotEqual(end_line, "[clinic]*/[clinic]*/")
         self.assertEqual(end_line, "[clinic]*/")
 
+    def test_mangled_marker_line(self):
+        raw = """
+            /*[clinic input]
+            [clinic start generated code]*/
+            /*[clinic end generated code: foo]*/
+        """
+        err = (
+            "Mangled Argument Clinic marker line: "
+            "'/*[clinic end generated code: foo]*/'"
+        )
+        self.expect_failure(raw, err, filename="test.c", lineno=3)
+
+    def test_checksum_mismatch(self):
+        raw = """
+            /*[clinic input]
+            [clinic start generated code]*/
+            /*[clinic end generated code: output=0123456789abcdef input=fedcba9876543210]*/
+        """
+        err = ("Checksum mismatch! "
+               "Expected '0123456789abcdef', computed 'da39a3ee5e6b4b0d'")
+        self.expect_failure(raw, err, filename="test.c", lineno=3)
+
+    def test_garbage_after_stop_line(self):
+        raw = """
+            /*[clinic input]
+            [clinic start generated code]*/foobarfoobar!
+        """
+        err = "Garbage after stop line: 'foobarfoobar!'"
+        self.expect_failure(raw, err, filename="test.c", lineno=2)
+
+    def test_whitespace_before_stop_line(self):
+        raw = """
+            /*[clinic input]
+             [clinic start generated code]*/
+        """
+        err = (
+            "Whitespace is not allowed before the stop line: "
+            "' [clinic start generated code]*/'"
+        )
+        self.expect_failure(raw, err, filename="test.c", lineno=2)
+
+    def test_parse_with_body_prefix(self):
+        clang = clinic.CLanguage(None)
+        clang.body_prefix = "//"
+        clang.start_line = "//[{dsl_name} start]"
+        clang.stop_line = "//[{dsl_name} stop]"
+        cl = clinic.Clinic(clang, filename="test.c", limited_capi=False)
+        raw = dedent("""
+            //[clinic start]
+            //module test
+            //[clinic stop]
+        """).strip()
+        out = cl.parse(raw)
+        expected = dedent("""
+            //[clinic start]
+            //module test
+            //
+            //[clinic stop]
+            /*[clinic end generated code: output=da39a3ee5e6b4b0d input=65fab8adff58cf08]*/
+        """).lstrip()  # Note, lstrip() because of the newline
+        self.assertEqual(out, expected)
+
+    def test_cpp_monitor_fail_nested_block_comment(self):
+        raw = """
+            /* start
+            /* nested
+            */
+            */
+        """
+        err = 'Nested block comment!'
+        self.expect_failure(raw, err, filename="test.c", lineno=2)
+
+    def test_cpp_monitor_fail_invalid_format_noarg(self):
+        raw = """
+            #if
+            a()
+            #endif
+        """
+        err = 'Invalid format for #if line: no argument!'
+        self.expect_failure(raw, err, filename="test.c", lineno=1)
+
+    def test_cpp_monitor_fail_invalid_format_toomanyargs(self):
+        raw = """
+            #ifdef A B
+            a()
+            #endif
+        """
+        err = 'Invalid format for #ifdef line: should be exactly one argument!'
+        self.expect_failure(raw, err, filename="test.c", lineno=1)
+
+    def test_cpp_monitor_fail_no_matching_if(self):
+        raw = '#else'
+        err = '#else without matching #if / #ifdef / #ifndef!'
+        self.expect_failure(raw, err, filename="test.c", lineno=1)
+
+    def test_directive_output_unknown_preset(self):
+        raw = """
+            /*[clinic input]
+            output preset nosuchpreset
+            [clinic start generated code]*/
+        """
+        err = "Unknown preset 'nosuchpreset'"
+        self.expect_failure(raw, err)
+
+    def test_directive_output_cant_pop(self):
+        raw = """
+            /*[clinic input]
+            output pop
+            [clinic start generated code]*/
+        """
+        err = "Can't 'output pop', stack is empty"
+        self.expect_failure(raw, err)
+
+    def test_directive_output_print(self):
+        raw = dedent("""
+            /*[clinic input]
+            output print 'I told you once.'
+            [clinic start generated code]*/
+        """)
+        out = self.clinic.parse(raw)
+        # The generated output will differ for every run, but we can check that
+        # it starts with the clinic block, we check that it contains all the
+        # expected fields, and we check that it contains the checksum line.
+        self.assertTrue(out.startswith(dedent("""
+            /*[clinic input]
+            output print 'I told you once.'
+            [clinic start generated code]*/
+        """)))
+        fields = {
+            "cpp_endif",
+            "cpp_if",
+            "docstring_definition",
+            "docstring_prototype",
+            "impl_definition",
+            "impl_prototype",
+            "methoddef_define",
+            "methoddef_ifndef",
+            "parser_definition",
+            "parser_prototype",
+        }
+        for field in fields:
+            with self.subTest(field=field):
+                self.assertIn(field, out)
+        last_line = out.rstrip().split("\n")[-1]
+        self.assertTrue(
+            last_line.startswith("/*[clinic end generated code: output=")
+        )
+
+    def test_directive_wrong_arg_number(self):
+        raw = dedent("""
+            /*[clinic input]
+            preserve foo bar baz eggs spam ham mushrooms
+            [clinic start generated code]*/
+        """)
+        err = "takes 1 positional argument but 8 were given"
+        self.expect_failure(raw, err)
+
+    def test_unknown_destination_command(self):
+        raw = """
+            /*[clinic input]
+            destination buffer nosuchcommand
+            [clinic start generated code]*/
+        """
+        err = "unknown destination command 'nosuchcommand'"
+        self.expect_failure(raw, err)
+
+    def test_no_access_to_members_in_converter_init(self):
+        raw = """
+            /*[python input]
+            class Custom_converter(CConverter):
+                converter = "some_c_function"
+                def converter_init(self):
+                    self.function.noaccess
+            [python start generated code]*/
+            /*[clinic input]
+            module test
+            test.fn
+                a: Custom
+            [clinic start generated code]*/
+        """
+        err = (
+            "accessing self.function inside converter_init is disallowed!"
+        )
+        self.expect_failure(raw, err)
+
+    @staticmethod
+    @contextlib.contextmanager
+    def _clinic_version(new_version):
+        """Helper for test_version_*() tests"""
+        _saved = clinic.version
+        clinic.version = new_version
+        try:
+            yield
+        finally:
+            clinic.version = _saved
+
+    def test_version_directive(self):
+        dataset = (
+            # (clinic version, required version)
+            ('3', '2'),          # required version < clinic version
+            ('3.1', '3.0'),      # required version < clinic version
+            ('1.2b0', '1.2a7'),  # required version < clinic version
+            ('5', '5'),          # required version == clinic version
+            ('6.1', '6.1'),      # required version == clinic version
+            ('1.2b3', '1.2b3'),  # required version == clinic version
+        )
+        for clinic_version, required_version in dataset:
+            with self.subTest(clinic_version=clinic_version,
+                              required_version=required_version):
+                with self._clinic_version(clinic_version):
+                    block = dedent(f"""
+                        /*[clinic input]
+                        version {required_version}
+                        [clinic start generated code]*/
+                    """)
+                    self.clinic.parse(block)
+
+    def test_version_directive_insufficient_version(self):
+        with self._clinic_version('4'):
+            err = (
+                "Insufficient Clinic version!\n"
+                "  Version: 4\n"
+                "  Required: 5"
+            )
+            block = """
+                /*[clinic input]
+                version 5
+                [clinic start generated code]*/
+            """
+            self.expect_failure(block, err)
+
+    def test_version_directive_illegal_char(self):
+        err = "Illegal character 'v' in version string 'v5'"
+        block = """
+            /*[clinic input]
+            version v5
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err)
+
+    def test_version_directive_unsupported_string(self):
+        err = "Unsupported version string: '.-'"
+        block = """
+            /*[clinic input]
+            version .-
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err)
+
+    def test_clone_mismatch(self):
+        err = "'kind' of function and cloned function don't match!"
+        block = """
+            /*[clinic input]
+            module m
+            @classmethod
+            m.f1
+                a: object
+            [clinic start generated code]*/
+            /*[clinic input]
+            @staticmethod
+            m.f2 = m.f1
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=9)
+
+    def test_badly_formed_return_annotation(self):
+        err = "Badly formed annotation for 'm.f': 'Custom'"
+        block = """
+            /*[python input]
+            class Custom_return_converter(CReturnConverter):
+                def __init__(self):
+                    raise ValueError("abc")
+            [python start generated code]*/
+            /*[clinic input]
+            module m
+            m.f -> Custom
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=8)
+
+    def test_multiple_star_in_args(self):
+        err = "'my_test_func' uses '*' more than once."
+        block = """
+            /*[clinic input]
+            my_test_func
+
+                pos_arg: object
+                *args: object
+                *
+                kw_arg: object
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=6)
+
+    def test_module_already_got_one(self):
+        err = "Already defined module 'm'!"
+        block = """
+            /*[clinic input]
+            module m
+            module m
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_destination_already_got_one(self):
+        err = "Destination already exists: 'test'"
+        block = """
+            /*[clinic input]
+            destination test new buffer
+            destination test new buffer
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_destination_does_not_exist(self):
+        err = "Destination does not exist: '/dev/null'"
+        block = """
+            /*[clinic input]
+            output everything /dev/null
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_class_already_got_one(self):
+        err = "Already defined class 'C'!"
+        block = """
+            /*[clinic input]
+            class C "" ""
+            class C "" ""
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_cant_nest_module_inside_class(self):
+        err = "Can't nest a module inside a class!"
+        block = """
+            /*[clinic input]
+            class C "" ""
+            module C.m
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_dest_buffer_not_empty_at_eof(self):
+        expected_warning = ("Destination buffer 'buffer' not empty at "
+                            "end of file, emptying.")
+        expected_generated = dedent("""
+            /*[clinic input]
+            output everything buffer
+            fn
+                a: object
+                /
+            [clinic start generated code]*/
+            /*[clinic end generated code: output=da39a3ee5e6b4b0d input=1c4668687f5fd002]*/
+
+            /*[clinic input]
+            dump buffer
+            [clinic start generated code]*/
+
+            PyDoc_VAR(fn__doc__);
+
+            PyDoc_STRVAR(fn__doc__,
+            "fn($module, a, /)\\n"
+            "--\\n"
+            "\\n");
+
+            #define FN_METHODDEF    \\
+                {"fn", (PyCFunction)fn, METH_O, fn__doc__},
+
+            static PyObject *
+            fn(PyObject *module, PyObject *a)
+            /*[clinic end generated code: output=be6798b148ab4e53 input=524ce2e021e4eba6]*/
+        """)
+        block = dedent("""
+            /*[clinic input]
+            output everything buffer
+            fn
+                a: object
+                /
+            [clinic start generated code]*/
+        """)
+        with support.captured_stdout() as stdout:
+            generated = self.clinic.parse(block)
+        self.assertIn(expected_warning, stdout.getvalue())
+        self.assertEqual(generated, expected_generated)
+
+    def test_dest_clear(self):
+        err = "Can't clear destination 'file': it's not of type 'buffer'"
+        block = """
+            /*[clinic input]
+            destination file clear
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_directive_set_misuse(self):
+        err = "unknown variable 'ets'"
+        block = """
+            /*[clinic input]
+            set ets tse
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_directive_set_prefix(self):
+        block = dedent("""
+            /*[clinic input]
+            set line_prefix '// '
+            output everything suppress
+            output docstring_prototype buffer
+            fn
+                a: object
+                /
+            [clinic start generated code]*/
+            /* We need to dump the buffer.
+             * If not, Argument Clinic will emit a warning */
+            /*[clinic input]
+            dump buffer
+            [clinic start generated code]*/
+        """)
+        generated = self.clinic.parse(block)
+        expected_docstring_prototype = "// PyDoc_VAR(fn__doc__);"
+        self.assertIn(expected_docstring_prototype, generated)
+
+    def test_directive_set_suffix(self):
+        block = dedent("""
+            /*[clinic input]
+            set line_suffix '  // test'
+            output everything suppress
+            output docstring_prototype buffer
+            fn
+                a: object
+                /
+            [clinic start generated code]*/
+            /* We need to dump the buffer.
+             * If not, Argument Clinic will emit a warning */
+            /*[clinic input]
+            dump buffer
+            [clinic start generated code]*/
+        """)
+        generated = self.clinic.parse(block)
+        expected_docstring_prototype = "PyDoc_VAR(fn__doc__);  // test"
+        self.assertIn(expected_docstring_prototype, generated)
+
+    def test_directive_set_prefix_and_suffix(self):
+        block = dedent("""
+            /*[clinic input]
+            set line_prefix '{block comment start} '
+            set line_suffix ' {block comment end}'
+            output everything suppress
+            output docstring_prototype buffer
+            fn
+                a: object
+                /
+            [clinic start generated code]*/
+            /* We need to dump the buffer.
+             * If not, Argument Clinic will emit a warning */
+            /*[clinic input]
+            dump buffer
+            [clinic start generated code]*/
+        """)
+        generated = self.clinic.parse(block)
+        expected_docstring_prototype = "/* PyDoc_VAR(fn__doc__); */"
+        self.assertIn(expected_docstring_prototype, generated)
+
+    def test_directive_printout(self):
+        block = dedent("""
+            /*[clinic input]
+            output everything buffer
+            printout test
+            [clinic start generated code]*/
+        """)
+        expected = dedent("""
+            /*[clinic input]
+            output everything buffer
+            printout test
+            [clinic start generated code]*/
+            test
+            /*[clinic end generated code: output=4e1243bd22c66e76 input=898f1a32965d44ca]*/
+        """)
+        generated = self.clinic.parse(block)
+        self.assertEqual(generated, expected)
+
+    def test_directive_preserve_twice(self):
+        err = "Can't have 'preserve' twice in one block!"
+        block = """
+            /*[clinic input]
+            preserve
+            preserve
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_directive_preserve_input(self):
+        err = "'preserve' only works for blocks that don't produce any output!"
+        block = """
+            /*[clinic input]
+            preserve
+            fn
+                a: object
+                /
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=6)
+
+    def test_directive_preserve_output(self):
+        block = dedent("""
+            /*[clinic input]
+            output everything buffer
+            preserve
+            [clinic start generated code]*/
+            // Preserve this
+            /*[clinic end generated code: output=eaa49677ae4c1f7d input=559b5db18fddae6a]*/
+            /*[clinic input]
+            dump buffer
+            [clinic start generated code]*/
+            /*[clinic end generated code: output=da39a3ee5e6b4b0d input=524ce2e021e4eba6]*/
+        """)
+        generated = self.clinic.parse(block)
+        self.assertEqual(generated, block)
+
+    def test_directive_output_invalid_command(self):
+        err = dedent("""
+            Invalid command or destination name 'cmd'. Must be one of:
+             - 'preset'
+             - 'push'
+             - 'pop'
+             - 'print'
+             - 'everything'
+             - 'cpp_if'
+             - 'docstring_prototype'
+             - 'docstring_definition'
+             - 'methoddef_define'
+             - 'impl_prototype'
+             - 'parser_prototype'
+             - 'parser_definition'
+             - 'cpp_endif'
+             - 'methoddef_ifndef'
+             - 'impl_definition'
+        """).strip()
+        block = """
+            /*[clinic input]
+            output cmd buffer
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_validate_cloned_init(self):
+        block = """
+            /*[clinic input]
+            class C "void *" ""
+            C.meth
+              a: int
+            [clinic start generated code]*/
+            /*[clinic input]
+            @classmethod
+            C.__init__ = C.meth
+            [clinic start generated code]*/
+        """
+        err = "'__init__' must be a normal method; got 'FunctionKind.CLASS_METHOD'!"
+        self.expect_failure(block, err, lineno=8)
+
+    def test_validate_cloned_new(self):
+        block = """
+            /*[clinic input]
+            class C "void *" ""
+            C.meth
+              a: int
+            [clinic start generated code]*/
+            /*[clinic input]
+            C.__new__ = C.meth
+            [clinic start generated code]*/
+        """
+        err = "'__new__' must be a class method"
+        self.expect_failure(block, err, lineno=7)
+
+    def test_no_c_basename_cloned(self):
+        block = """
+            /*[clinic input]
+            foo2
+            [clinic start generated code]*/
+            /*[clinic input]
+            foo as = foo2
+            [clinic start generated code]*/
+        """
+        err = "No C basename provided after 'as' keyword"
+        self.expect_failure(block, err, lineno=5)
+
+    def test_cloned_with_custom_c_basename(self):
+        raw = dedent("""
+            /*[clinic input]
+            # Make sure we don't create spurious clinic/ directories.
+            output everything suppress
+            foo2
+            [clinic start generated code]*/
+
+            /*[clinic input]
+            foo as foo1 = foo2
+            [clinic start generated code]*/
+        """)
+        self.clinic.parse(raw)
+        funcs = self.clinic.functions
+        self.assertEqual(len(funcs), 2)
+        self.assertEqual(funcs[1].name, "foo")
+        self.assertEqual(funcs[1].c_basename, "foo1")
+
+    def test_cloned_with_illegal_c_basename(self):
+        block = """
+            /*[clinic input]
+            class C "void *" ""
+            foo1
+            [clinic start generated code]*/
+
+            /*[clinic input]
+            foo2 as .illegal. = foo1
+            [clinic start generated code]*/
+        """
+        err = "Illegal C basename: '.illegal.'"
+        self.expect_failure(block, err, lineno=7)
+
+
+class ParseFileUnitTest(TestCase):
+    def expect_parsing_failure(
+        self, *, filename, expected_error, verify=True, output=None
+    ):
+        errmsg = re.escape(dedent(expected_error).strip())
+        with self.assertRaisesRegex(clinic.ClinicError, errmsg):
+            clinic.parse_file(filename, limited_capi=False)
+
+    def test_parse_file_no_extension(self) -> None:
+        self.expect_parsing_failure(
+            filename="foo",
+            expected_error="Can't extract file type for file 'foo'"
+        )
+
+    def test_parse_file_strange_extension(self) -> None:
+        filenames_to_errors = {
+            "foo.rs": "Can't identify file type for file 'foo.rs'",
+            "foo.hs": "Can't identify file type for file 'foo.hs'",
+            "foo.js": "Can't identify file type for file 'foo.js'",
+        }
+        for filename, errmsg in filenames_to_errors.items():
+            with self.subTest(filename=filename):
+                self.expect_parsing_failure(filename=filename, expected_error=errmsg)
 
 
 class ClinicGroupPermuterTest(TestCase):
@@ -171,43 +787,43 @@ def test_solo_newline(self):
     def test_no_substitution(self):
         self._test("""
           abc
-          """, """
+        """, """
           abc
-          """)
+        """)
 
     def test_empty_substitution(self):
         self._test("""
           abc
           {name}
           def
-          """, """
+        """, """
           abc
           def
-          """, name='')
+        """, name='')
 
     def test_single_line_substitution(self):
         self._test("""
           abc
           {name}
           def
-          """, """
+        """, """
           abc
           GARGLE
           def
-          """, name='GARGLE')
+        """, name='GARGLE')
 
     def test_multiline_substitution(self):
         self._test("""
           abc
           {name}
           def
-          """, """
+        """, """
           abc
           bingle
           bungle
 
           def
-          """, name='bingle\nbungle\n')
+        """, name='bingle\nbungle\n')
 
 class InertParser:
     def __init__(self, clinic):
@@ -230,8 +846,9 @@ def _test(self, input, output):
 
         blocks = list(clinic.BlockParser(input, language))
         writer = clinic.BlockPrinter(language)
+        c = _make_clinic()
         for block in blocks:
-            writer.print_block(block)
+            writer.print_block(block, limited_capi=c.limited_capi, header_includes=c.includes)
         output = writer.f.getvalue()
         assert output == input, "output != input!\n\noutput " + repr(output) + "\n\n input " + repr(input)
 
@@ -240,9 +857,9 @@ def round_trip(self, input):
 
     def test_round_trip_1(self):
         self.round_trip("""
-    verbatim text here
-    lah dee dah
-""")
+            verbatim text here
+            lah dee dah
+        """)
     def test_round_trip_2(self):
         self.round_trip("""
     verbatim text here
@@ -257,10 +874,10 @@ def test_round_trip_2(self):
 
     def _test_clinic(self, input, output):
         language = clinic.CLanguage(None)
-        c = clinic.Clinic(language, filename="file")
+        c = clinic.Clinic(language, filename="file", limited_capi=False)
         c.parsers['inert'] = InertParser(c)
         c.parsers['copy'] = CopyParser(c)
-        computed, _ = c.parse(input)
+        computed = c.parse(input)
         self.assertEqual(output, computed)
 
     def test_clinic_1(self):
@@ -286,22 +903,59 @@ def test_clinic_1(self):
 
 
 class ClinicParserTest(TestCase):
+
+    def parse(self, text):
+        c = _make_clinic()
+        parser = DSLParser(c)
+        block = clinic.Block(text)
+        parser.parse(block)
+        return block
+
+    def parse_function(self, text, signatures_in_block=2, function_index=1):
+        block = self.parse(text)
+        s = block.signatures
+        self.assertEqual(len(s), signatures_in_block)
+        assert isinstance(s[0], clinic.Module)
+        assert isinstance(s[function_index], clinic.Function)
+        return s[function_index]
+
+    def expect_failure(self, block, err, *,
+                       filename=None, lineno=None, strip=True):
+        return _expect_failure(self, self.parse_function, block, err,
+                               filename=filename, lineno=lineno, strip=strip)
+
+    def checkDocstring(self, fn, expected):
+        self.assertTrue(hasattr(fn, "docstring"))
+        self.assertEqual(dedent(expected).strip(),
+                         fn.docstring.strip())
+
     def test_trivial(self):
-        parser = DSLParser(FakeClinic())
-        block = clinic.Block("module os\nos.access")
+        parser = DSLParser(_make_clinic())
+        block = clinic.Block("""
+            module os
+            os.access
+        """)
         parser.parse(block)
         module, function = block.signatures
         self.assertEqual("access", function.name)
         self.assertEqual("os", module.name)
 
     def test_ignore_line(self):
-        block = self.parse("#\nmodule os\nos.access")
+        block = self.parse(dedent("""
+            #
+            module os
+            os.access
+        """))
         module, function = block.signatures
         self.assertEqual("access", function.name)
         self.assertEqual("os", module.name)
 
     def test_param(self):
-        function = self.parse_function("module os\nos.access\n   path: int")
+        function = self.parse_function("""
+            module os
+            os.access
+                path: int
+        """)
         self.assertEqual("access", function.name)
         self.assertEqual(2, len(function.parameters))
         p = function.parameters['path']
@@ -309,460 +963,1109 @@ def test_param(self):
         self.assertIsInstance(p.converter, clinic.int_converter)
 
     def test_param_default(self):
-        function = self.parse_function("module os\nos.access\n    follow_symlinks: bool = True")
+        function = self.parse_function("""
+            module os
+            os.access
+                follow_symlinks: bool = True
+        """)
         p = function.parameters['follow_symlinks']
         self.assertEqual(True, p.default)
 
     def test_param_with_continuations(self):
-        function = self.parse_function("module os\nos.access\n    follow_symlinks: \\\n   bool \\\n   =\\\n    True")
+        function = self.parse_function(r"""
+            module os
+            os.access
+                follow_symlinks: \
+                bool \
+                = \
+                True
+        """)
         p = function.parameters['follow_symlinks']
         self.assertEqual(True, p.default)
 
-    def test_param_default_expression(self):
-        function = self.parse_function("module os\nos.access\n    follow_symlinks: int(c_default='MAXSIZE') = sys.maxsize")
+    def test_param_default_expr_named_constant(self):
+        function = self.parse_function("""
+            module os
+            os.access
+                follow_symlinks: int(c_default='MAXSIZE') = sys.maxsize
+            """)
         p = function.parameters['follow_symlinks']
         self.assertEqual(sys.maxsize, p.default)
         self.assertEqual("MAXSIZE", p.converter.c_default)
 
-        s = self.parse_function_should_fail("module os\nos.access\n    follow_symlinks: int = sys.maxsize")
-        self.assertEqual(s, "Error on line 0:\nWhen you specify a named constant ('sys.maxsize') as your default value,\nyou MUST specify a valid c_default.\n")
+        err = (
+            "When you specify a named constant ('sys.maxsize') as your default value, "
+            "you MUST specify a valid c_default."
+        )
+        block = """
+            module os
+            os.access
+                follow_symlinks: int = sys.maxsize
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_param_with_bizarre_default_fails_correctly(self):
+        template = """
+            module os
+            os.access
+                follow_symlinks: int = {default}
+        """
+        err = "Unsupported expression as default value"
+        for bad_default_value in (
+            "{1, 2, 3}",
+            "3 if bool() else 4",
+            "[x for x in range(42)]"
+        ):
+            with self.subTest(bad_default=bad_default_value):
+                block = template.format(default=bad_default_value)
+                self.expect_failure(block, err, lineno=2)
+
+    def test_unspecified_not_allowed_as_default_value(self):
+        block = """
+            module os
+            os.access
+                follow_symlinks: int(c_default='MAXSIZE') = unspecified
+        """
+        err = "'unspecified' is not a legal default value!"
+        exc = self.expect_failure(block, err, lineno=2)
+        self.assertNotIn('Malformed expression given as default value', str(exc))
+
+    def test_malformed_expression_as_default_value(self):
+        block = """
+            module os
+            os.access
+                follow_symlinks: int(c_default='MAXSIZE') = 1/0
+        """
+        err = "Malformed expression given as default value"
+        self.expect_failure(block, err, lineno=2)
+
+    def test_param_default_expr_binop(self):
+        err = (
+            "When you specify an expression ('a + b') as your default value, "
+            "you MUST specify a valid c_default."
+        )
+        block = """
+            fn
+                follow_symlinks: int = a + b
+        """
+        self.expect_failure(block, err, lineno=1)
 
     def test_param_no_docstring(self):
         function = self.parse_function("""
-module os
-os.access
-    follow_symlinks: bool = True
-    something_else: str = ''""")
-        p = function.parameters['follow_symlinks']
+            module os
+            os.access
+                follow_symlinks: bool = True
+                something_else: str = ''
+        """)
         self.assertEqual(3, len(function.parameters))
-        self.assertIsInstance(function.parameters['something_else'].converter, clinic.str_converter)
+        conv = function.parameters['something_else'].converter
+        self.assertIsInstance(conv, clinic.str_converter)
 
     def test_param_default_parameters_out_of_order(self):
-        s = self.parse_function_should_fail("""
-module os
-os.access
-    follow_symlinks: bool = True
-    something_else: str""")
-        self.assertEqual(s, """Error on line 0:
-Can't have a parameter without a default ('something_else')
-after a parameter with a default!
-""")
+        err = (
+            "Can't have a parameter without a default ('something_else') "
+            "after a parameter with a default!"
+        )
+        block = """
+            module os
+            os.access
+                follow_symlinks: bool = True
+                something_else: str
+        """
+        self.expect_failure(block, err, lineno=3)
 
     def disabled_test_converter_arguments(self):
-        function = self.parse_function("module os\nos.access\n    path: path_t(allow_fd=1)")
+        function = self.parse_function("""
+            module os
+            os.access
+                path: path_t(allow_fd=1)
+        """)
         p = function.parameters['path']
         self.assertEqual(1, p.converter.args['allow_fd'])
 
     def test_function_docstring(self):
         function = self.parse_function("""
-module os
-os.stat as os_stat_fn
+            module os
+            os.stat as os_stat_fn
 
-   path: str
-       Path to be examined
+               path: str
+                   Path to be examined
+                   Ensure that multiple lines are indented correctly.
 
-Perform a stat system call on the given path.""")
-        self.assertEqual("""
-stat($module, /, path)
---
+            Perform a stat system call on the given path.
 
-Perform a stat system call on the given path.
+            Ensure that multiple lines are indented correctly.
+            Ensure that multiple lines are indented correctly.
+        """)
+        self.checkDocstring(function, """
+            stat($module, /, path)
+            --
+
+            Perform a stat system call on the given path.
+
+              path
+                Path to be examined
+                Ensure that multiple lines are indented correctly.
 
-  path
-    Path to be examined
-""".strip(), function.docstring)
+            Ensure that multiple lines are indented correctly.
+            Ensure that multiple lines are indented correctly.
+        """)
+
+    def test_docstring_trailing_whitespace(self):
+        function = self.parse_function(
+            "module t\n"
+            "t.s\n"
+            "   a: object\n"
+            "      Param docstring with trailing whitespace  \n"
+            "Func docstring summary with trailing whitespace  \n"
+            "  \n"
+            "Func docstring body with trailing whitespace  \n"
+        )
+        self.checkDocstring(function, """
+            s($module, /, a)
+            --
+
+            Func docstring summary with trailing whitespace
+
+              a
+                Param docstring with trailing whitespace
+
+            Func docstring body with trailing whitespace
+        """)
 
     def test_explicit_parameters_in_docstring(self):
-        function = self.parse_function("""
-module foo
-foo.bar
-  x: int
-     Documentation for x.
-  y: int
+        function = self.parse_function(dedent("""
+            module foo
+            foo.bar
+              x: int
+                 Documentation for x.
+              y: int
 
-This is the documentation for foo.
+            This is the documentation for foo.
 
-Okay, we're done here.
-""")
-        self.assertEqual("""
-bar($module, /, x, y)
---
+            Okay, we're done here.
+        """))
+        self.checkDocstring(function, """
+            bar($module, /, x, y)
+            --
+
+            This is the documentation for foo.
 
-This is the documentation for foo.
+              x
+                Documentation for x.
 
-  x
-    Documentation for x.
+            Okay, we're done here.
+        """)
 
-Okay, we're done here.
-""".strip(), function.docstring)
+    def test_docstring_with_comments(self):
+        function = self.parse_function(dedent("""
+            module foo
+            foo.bar
+              x: int
+                 # We're about to have
+                 # the documentation for x.
+                 Documentation for x.
+                 # We've just had
+                 # the documentation for x.
+              y: int
+
+            # We're about to have
+            # the documentation for foo.
+            This is the documentation for foo.
+            # We've just had
+            # the documentation for foo.
+
+            Okay, we're done here.
+        """))
+        self.checkDocstring(function, """
+            bar($module, /, x, y)
+            --
+
+            This is the documentation for foo.
+
+              x
+                Documentation for x.
+
+            Okay, we're done here.
+        """)
 
     def test_parser_regression_special_character_in_parameter_column_of_docstring_first_line(self):
-        function = self.parse_function("""
-module os
-os.stat
-    path: str
-This/used to break Clinic!
-""")
-        self.assertEqual("stat($module, /, path)\n--\n\nThis/used to break Clinic!", function.docstring)
+        function = self.parse_function(dedent("""
+            module os
+            os.stat
+                path: str
+            This/used to break Clinic!
+        """))
+        self.checkDocstring(function, """
+            stat($module, /, path)
+            --
+
+            This/used to break Clinic!
+        """)
 
     def test_c_name(self):
-        function = self.parse_function("module os\nos.stat as os_stat_fn")
+        function = self.parse_function("""
+            module os
+            os.stat as os_stat_fn
+        """)
         self.assertEqual("os_stat_fn", function.c_basename)
 
+    def test_base_invalid_syntax(self):
+        block = """
+            module os
+            os.stat
+                invalid syntax: int = 42
+        """
+        err = dedent(r"""
+            Function 'stat' has an invalid parameter declaration:
+            \s+'invalid syntax: int = 42'
+        """).strip()
+        with self.assertRaisesRegex(clinic.ClinicError, err):
+            self.parse_function(block)
+
+    def test_param_default_invalid_syntax(self):
+        block = """
+            module os
+            os.stat
+                x: int = invalid syntax
+        """
+        err = r"Syntax error: 'x = invalid syntax\n'"
+        self.expect_failure(block, err, lineno=2)
+
+    def test_cloning_nonexistent_function_correctly_fails(self):
+        block = """
+            cloned = fooooooooooooooooo
+            This is trying to clone a nonexistent function!!
+        """
+        err = "Couldn't find existing function 'fooooooooooooooooo'!"
+        with support.captured_stderr() as stderr:
+            self.expect_failure(block, err, lineno=0)
+        expected_debug_print = dedent("""\
+            cls=None, module=<clinic.Clinic object>, existing='fooooooooooooooooo'
+            (cls or module).functions=[]
+        """)
+        stderr = stderr.getvalue()
+        self.assertIn(expected_debug_print, stderr)
+
     def test_return_converter(self):
-        function = self.parse_function("module os\nos.stat -> int")
+        function = self.parse_function("""
+            module os
+            os.stat -> int
+        """)
         self.assertIsInstance(function.return_converter, clinic.int_return_converter)
 
+    def test_return_converter_invalid_syntax(self):
+        block = """
+            module os
+            os.stat -> invalid syntax
+        """
+        err = "Badly formed annotation for 'os.stat': 'invalid syntax'"
+        self.expect_failure(block, err)
+
+    def test_legacy_converter_disallowed_in_return_annotation(self):
+        block = """
+            module os
+            os.stat -> "s"
+        """
+        err = "Legacy converter 's' not allowed as a return converter"
+        self.expect_failure(block, err)
+
+    def test_unknown_return_converter(self):
+        block = """
+            module os
+            os.stat -> fooooooooooooooooooooooo
+        """
+        err = "No available return converter called 'fooooooooooooooooooooooo'"
+        self.expect_failure(block, err)
+
     def test_star(self):
-        function = self.parse_function("module os\nos.access\n    *\n    follow_symlinks: bool = True")
+        function = self.parse_function("""
+            module os
+            os.access
+                *
+                follow_symlinks: bool = True
+        """)
         p = function.parameters['follow_symlinks']
         self.assertEqual(inspect.Parameter.KEYWORD_ONLY, p.kind)
         self.assertEqual(0, p.group)
 
     def test_group(self):
-        function = self.parse_function("module window\nwindow.border\n [\n ls : int\n ]\n /\n")
+        function = self.parse_function("""
+            module window
+            window.border
+                [
+                ls: int
+                ]
+                /
+        """)
         p = function.parameters['ls']
         self.assertEqual(1, p.group)
 
     def test_left_group(self):
         function = self.parse_function("""
-module curses
-curses.addch
-   [
-   y: int
-     Y-coordinate.
-   x: int
-     X-coordinate.
-   ]
-   ch: char
-     Character to add.
-   [
-   attr: long
-     Attributes for the character.
-   ]
-   /
-""")
-        for name, group in (
+            module curses
+            curses.addch
+                [
+                y: int
+                    Y-coordinate.
+                x: int
+                    X-coordinate.
+                ]
+                ch: char
+                    Character to add.
+                [
+                attr: long
+                    Attributes for the character.
+                ]
+                /
+        """)
+        dataset = (
             ('y', -1), ('x', -1),
             ('ch', 0),
             ('attr', 1),
-            ):
-            p = function.parameters[name]
-            self.assertEqual(p.group, group)
-            self.assertEqual(p.kind, inspect.Parameter.POSITIONAL_ONLY)
-        self.assertEqual(function.docstring.strip(), """
-addch([y, x,] ch, [attr])
-
-
-  y
-    Y-coordinate.
-  x
-    X-coordinate.
-  ch
-    Character to add.
-  attr
-    Attributes for the character.
-            """.strip())
+        )
+        for name, group in dataset:
+            with self.subTest(name=name, group=group):
+                p = function.parameters[name]
+                self.assertEqual(p.group, group)
+                self.assertEqual(p.kind, inspect.Parameter.POSITIONAL_ONLY)
+        self.checkDocstring(function, """
+            addch([y, x,] ch, [attr])
+
+
+              y
+                Y-coordinate.
+              x
+                X-coordinate.
+              ch
+                Character to add.
+              attr
+                Attributes for the character.
+        """)
 
     def test_nested_groups(self):
         function = self.parse_function("""
-module curses
-curses.imaginary
-   [
-   [
-   y1: int
-     Y-coordinate.
-   y2: int
-     Y-coordinate.
-   ]
-   x1: int
-     X-coordinate.
-   x2: int
-     X-coordinate.
-   ]
-   ch: char
-     Character to add.
-   [
-   attr1: long
-     Attributes for the character.
-   attr2: long
-     Attributes for the character.
-   attr3: long
-     Attributes for the character.
-   [
-   attr4: long
-     Attributes for the character.
-   attr5: long
-     Attributes for the character.
-   attr6: long
-     Attributes for the character.
-   ]
-   ]
-   /
-""")
-        for name, group in (
+            module curses
+            curses.imaginary
+               [
+               [
+               y1: int
+                 Y-coordinate.
+               y2: int
+                 Y-coordinate.
+               ]
+               x1: int
+                 X-coordinate.
+               x2: int
+                 X-coordinate.
+               ]
+               ch: char
+                 Character to add.
+               [
+               attr1: long
+                 Attributes for the character.
+               attr2: long
+                 Attributes for the character.
+               attr3: long
+                 Attributes for the character.
+               [
+               attr4: long
+                 Attributes for the character.
+               attr5: long
+                 Attributes for the character.
+               attr6: long
+                 Attributes for the character.
+               ]
+               ]
+               /
+        """)
+        dataset = (
             ('y1', -2), ('y2', -2),
             ('x1', -1), ('x2', -1),
             ('ch', 0),
             ('attr1', 1), ('attr2', 1), ('attr3', 1),
             ('attr4', 2), ('attr5', 2), ('attr6', 2),
-            ):
-            p = function.parameters[name]
-            self.assertEqual(p.group, group)
-            self.assertEqual(p.kind, inspect.Parameter.POSITIONAL_ONLY)
-
-        self.assertEqual(function.docstring.strip(), """
-imaginary([[y1, y2,] x1, x2,] ch, [attr1, attr2, attr3, [attr4, attr5,
-          attr6]])
-
-
-  y1
-    Y-coordinate.
-  y2
-    Y-coordinate.
-  x1
-    X-coordinate.
-  x2
-    X-coordinate.
-  ch
-    Character to add.
-  attr1
-    Attributes for the character.
-  attr2
-    Attributes for the character.
-  attr3
-    Attributes for the character.
-  attr4
-    Attributes for the character.
-  attr5
-    Attributes for the character.
-  attr6
-    Attributes for the character.
-                """.strip())
-
-    def parse_function_should_fail(self, s):
-        with support.captured_stdout() as stdout:
-            with self.assertRaises(SystemExit):
-                self.parse_function(s)
-        return stdout.getvalue()
+        )
+        for name, group in dataset:
+            with self.subTest(name=name, group=group):
+                p = function.parameters[name]
+                self.assertEqual(p.group, group)
+                self.assertEqual(p.kind, inspect.Parameter.POSITIONAL_ONLY)
+
+        self.checkDocstring(function, """
+            imaginary([[y1, y2,] x1, x2,] ch, [attr1, attr2, attr3, [attr4, attr5,
+                      attr6]])
+
+
+              y1
+                Y-coordinate.
+              y2
+                Y-coordinate.
+              x1
+                X-coordinate.
+              x2
+                X-coordinate.
+              ch
+                Character to add.
+              attr1
+                Attributes for the character.
+              attr2
+                Attributes for the character.
+              attr3
+                Attributes for the character.
+              attr4
+                Attributes for the character.
+              attr5
+                Attributes for the character.
+              attr6
+                Attributes for the character.
+        """)
 
     def test_disallowed_grouping__two_top_groups_on_left(self):
-        s = self.parse_function_should_fail("""
-module foo
-foo.two_top_groups_on_left
-    [
-    group1 : int
-    ]
-    [
-    group2 : int
-    ]
-    param: int
-            """)
-        self.assertEqual(s,
-            ('Error on line 0:\n'
-            'Function two_top_groups_on_left has an unsupported group configuration. (Unexpected state 2.b)\n'))
+        err = (
+            "Function 'two_top_groups_on_left' has an unsupported group "
+            "configuration. (Unexpected state 2.b)"
+        )
+        block = """
+            module foo
+            foo.two_top_groups_on_left
+                [
+                group1 : int
+                ]
+                [
+                group2 : int
+                ]
+                param: int
+        """
+        self.expect_failure(block, err, lineno=5)
 
     def test_disallowed_grouping__two_top_groups_on_right(self):
-        self.parse_function_should_fail("""
-module foo
-foo.two_top_groups_on_right
-    param: int
-    [
-    group1 : int
-    ]
-    [
-    group2 : int
-    ]
-            """)
+        block = """
+            module foo
+            foo.two_top_groups_on_right
+                param: int
+                [
+                group1 : int
+                ]
+                [
+                group2 : int
+                ]
+        """
+        err = (
+            "Function 'two_top_groups_on_right' has an unsupported group "
+            "configuration. (Unexpected state 6.b)"
+        )
+        self.expect_failure(block, err)
 
     def test_disallowed_grouping__parameter_after_group_on_right(self):
-        self.parse_function_should_fail("""
-module foo
-foo.parameter_after_group_on_right
-    param: int
-    [
-    [
-    group1 : int
-    ]
-    group2 : int
-    ]
-            """)
+        block = """
+            module foo
+            foo.parameter_after_group_on_right
+                param: int
+                [
+                [
+                group1 : int
+                ]
+                group2 : int
+                ]
+        """
+        err = (
+            "Function parameter_after_group_on_right has an unsupported group "
+            "configuration. (Unexpected state 6.a)"
+        )
+        self.expect_failure(block, err)
 
     def test_disallowed_grouping__group_after_parameter_on_left(self):
-        self.parse_function_should_fail("""
-module foo
-foo.group_after_parameter_on_left
-    [
-    group2 : int
-    [
-    group1 : int
-    ]
-    ]
-    param: int
-            """)
+        block = """
+            module foo
+            foo.group_after_parameter_on_left
+                [
+                group2 : int
+                [
+                group1 : int
+                ]
+                ]
+                param: int
+        """
+        err = (
+            "Function 'group_after_parameter_on_left' has an unsupported group "
+            "configuration. (Unexpected state 2.b)"
+        )
+        self.expect_failure(block, err)
 
     def test_disallowed_grouping__empty_group_on_left(self):
-        self.parse_function_should_fail("""
-module foo
-foo.empty_group
-    [
-    [
-    ]
-    group2 : int
-    ]
-    param: int
-            """)
+        block = """
+            module foo
+            foo.empty_group
+                [
+                [
+                ]
+                group2 : int
+                ]
+                param: int
+        """
+        err = (
+            "Function 'empty_group' has an empty group. "
+            "All groups must contain at least one parameter."
+        )
+        self.expect_failure(block, err)
 
     def test_disallowed_grouping__empty_group_on_right(self):
-        self.parse_function_should_fail("""
-module foo
-foo.empty_group
-    param: int
-    [
-    [
-    ]
-    group2 : int
-    ]
-            """)
+        block = """
+            module foo
+            foo.empty_group
+                param: int
+                [
+                [
+                ]
+                group2 : int
+                ]
+        """
+        err = (
+            "Function 'empty_group' has an empty group. "
+            "All groups must contain at least one parameter."
+        )
+        self.expect_failure(block, err)
+
+    def test_disallowed_grouping__no_matching_bracket(self):
+        block = """
+            module foo
+            foo.empty_group
+                param: int
+                ]
+                group2: int
+                ]
+        """
+        err = "Function 'empty_group' has a ']' without a matching '['"
+        self.expect_failure(block, err)
+
+    def test_disallowed_grouping__must_be_position_only(self):
+        dataset = ("""
+            with_kwds
+                [
+                *
+                a: object
+                ]
+        """, """
+            with_kwds
+                [
+                a: object
+                ]
+        """)
+        err = (
+            "You cannot use optional groups ('[' and ']') unless all "
+            "parameters are positional-only ('/')"
+        )
+        for block in dataset:
+            with self.subTest(block=block):
+                self.expect_failure(block, err)
 
     def test_no_parameters(self):
         function = self.parse_function("""
-module foo
-foo.bar
+            module foo
+            foo.bar
 
-Docstring
+            Docstring
 
-""")
+        """)
         self.assertEqual("bar($module, /)\n--\n\nDocstring", function.docstring)
         self.assertEqual(1, len(function.parameters)) # self!
 
     def test_init_with_no_parameters(self):
         function = self.parse_function("""
-module foo
-class foo.Bar "unused" "notneeded"
-foo.Bar.__init__
+            module foo
+            class foo.Bar "unused" "notneeded"
+            foo.Bar.__init__
+
+            Docstring
 
-Docstring
+        """, signatures_in_block=3, function_index=2)
 
-""", signatures_in_block=3, function_index=2)
         # self is not in the signature
         self.assertEqual("Bar()\n--\n\nDocstring", function.docstring)
         # but it *is* a parameter
         self.assertEqual(1, len(function.parameters))
 
     def test_illegal_module_line(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar => int
-    /
-""")
+        block = """
+            module foo
+            foo.bar => int
+                /
+        """
+        err = "Illegal function name: 'foo.bar => int'"
+        self.expect_failure(block, err)
 
     def test_illegal_c_basename(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar as 935
-    /
-""")
+        block = """
+            module foo
+            foo.bar as 935
+                /
+        """
+        err = "Illegal C basename: '935'"
+        self.expect_failure(block, err)
+
+    def test_no_c_basename(self):
+        block = "foo as "
+        err = "No C basename provided after 'as' keyword"
+        self.expect_failure(block, err, strip=False)
 
     def test_single_star(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    *
-    *
-""")
+        block = """
+            module foo
+            foo.bar
+                *
+                *
+        """
+        err = "Function 'bar' uses '*' more than once."
+        self.expect_failure(block, err)
 
-    def test_parameters_required_after_star_without_initial_parameters_or_docstring(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    *
-""")
+    def test_parameters_required_after_star(self):
+        dataset = (
+            "module foo\nfoo.bar\n  *",
+            "module foo\nfoo.bar\n  *\nDocstring here.",
+            "module foo\nfoo.bar\n  this: int\n  *",
+            "module foo\nfoo.bar\n  this: int\n  *\nDocstring.",
+        )
+        err = "Function 'bar' specifies '*' without following parameters."
+        for block in dataset:
+            with self.subTest(block=block):
+                self.expect_failure(block, err)
 
-    def test_parameters_required_after_star_without_initial_parameters_with_docstring(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    *
-Docstring here.
-""")
+    def test_fulldisplayname_class(self):
+        dataset = (
+            ("T", """
+                class T "void *" ""
+                T.__init__
+            """),
+            ("m.T", """
+                module m
+                class m.T "void *" ""
+                @classmethod
+                m.T.__new__
+            """),
+            ("m.T.C", """
+                module m
+                class m.T "void *" ""
+                class m.T.C "void *" ""
+                m.T.C.__init__
+            """),
+        )
+        for name, code in dataset:
+            with self.subTest(name=name, code=code):
+                block = self.parse(code)
+                func = block.signatures[-1]
+                self.assertEqual(func.fulldisplayname, name)
 
-    def test_parameters_required_after_star_with_initial_parameters_without_docstring(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    this: int
-    *
-""")
+    def test_fulldisplayname_meth(self):
+        dataset = (
+            ("func", "func"),
+            ("m.func", """
+                module m
+                m.func
+            """),
+            ("T.meth", """
+                class T "void *" ""
+                T.meth
+            """),
+            ("m.T.meth", """
+                module m
+                class m.T "void *" ""
+                m.T.meth
+            """),
+            ("m.T.C.meth", """
+                module m
+                class m.T "void *" ""
+                class m.T.C "void *" ""
+                m.T.C.meth
+            """),
+        )
+        for name, code in dataset:
+            with self.subTest(name=name, code=code):
+                block = self.parse(code)
+                func = block.signatures[-1]
+                self.assertEqual(func.fulldisplayname, name)
+
+    def test_depr_star_invalid_format_1(self):
+        block = """
+            module foo
+            foo.bar
+                this: int
+                * [from 3]
+            Docstring.
+        """
+        err = (
+            "Function 'bar': expected format '[from major.minor]' "
+            "where 'major' and 'minor' are integers; got '3'"
+        )
+        self.expect_failure(block, err, lineno=3)
 
-    def test_parameters_required_after_star_with_initial_parameters_and_docstring(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    this: int
-    *
-Docstring.
-""")
+    def test_depr_star_invalid_format_2(self):
+        block = """
+            module foo
+            foo.bar
+                this: int
+                * [from a.b]
+            Docstring.
+        """
+        err = (
+            "Function 'bar': expected format '[from major.minor]' "
+            "where 'major' and 'minor' are integers; got 'a.b'"
+        )
+        self.expect_failure(block, err, lineno=3)
+
+    def test_depr_star_invalid_format_3(self):
+        block = """
+            module foo
+            foo.bar
+                this: int
+                * [from 1.2.3]
+            Docstring.
+        """
+        err = (
+            "Function 'bar': expected format '[from major.minor]' "
+            "where 'major' and 'minor' are integers; got '1.2.3'"
+        )
+        self.expect_failure(block, err, lineno=3)
+
+    def test_parameters_required_after_depr_star(self):
+        block = """
+            module foo
+            foo.bar
+                this: int
+                * [from 3.14]
+            Docstring.
+        """
+        err = (
+            "Function 'bar' specifies '* [from ...]' without "
+            "following parameters."
+        )
+        self.expect_failure(block, err, lineno=4)
+
+    def test_parameters_required_after_depr_star2(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                * [from 3.14]
+                *
+                b: int
+            Docstring.
+        """
+        err = (
+            "Function 'bar' specifies '* [from ...]' without "
+            "following parameters."
+        )
+        self.expect_failure(block, err, lineno=4)
+
+    def test_depr_star_must_come_before_star(self):
+        block = """
+            module foo
+            foo.bar
+                this: int
+                *
+                * [from 3.14]
+            Docstring.
+        """
+        err = "Function 'bar': '* [from ...]' must precede '*'"
+        self.expect_failure(block, err, lineno=4)
+
+    def test_depr_star_duplicate(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                * [from 3.14]
+                b: int
+                * [from 3.14]
+                c: int
+            Docstring.
+        """
+        err = "Function 'bar' uses '* [from 3.14]' more than once."
+        self.expect_failure(block, err, lineno=5)
+
+    def test_depr_star_duplicate2(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                * [from 3.14]
+                b: int
+                * [from 3.15]
+                c: int
+            Docstring.
+        """
+        err = "Function 'bar': '* [from 3.15]' must precede '* [from 3.14]'"
+        self.expect_failure(block, err, lineno=5)
+
+    def test_depr_slash_duplicate(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                / [from 3.14]
+                b: int
+                / [from 3.14]
+                c: int
+            Docstring.
+        """
+        err = "Function 'bar' uses '/ [from 3.14]' more than once."
+        self.expect_failure(block, err, lineno=5)
+
+    def test_depr_slash_duplicate2(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                / [from 3.15]
+                b: int
+                / [from 3.14]
+                c: int
+            Docstring.
+        """
+        err = "Function 'bar': '/ [from 3.14]' must precede '/ [from 3.15]'"
+        self.expect_failure(block, err, lineno=5)
 
     def test_single_slash(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    /
-    /
-""")
+        block = """
+            module foo
+            foo.bar
+                /
+                /
+        """
+        err = (
+            "Function 'bar' has an unsupported group configuration. "
+            "(Unexpected state 0.d)"
+        )
+        self.expect_failure(block, err)
+
+    def test_parameters_required_before_depr_slash(self):
+        block = """
+            module foo
+            foo.bar
+                / [from 3.14]
+            Docstring.
+        """
+        err = (
+            "Function 'bar' specifies '/ [from ...]' without "
+            "preceding parameters."
+        )
+        self.expect_failure(block, err, lineno=2)
+
+    def test_parameters_required_before_depr_slash2(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                /
+                / [from 3.14]
+            Docstring.
+        """
+        err = (
+            "Function 'bar' specifies '/ [from ...]' without "
+            "preceding parameters."
+        )
+        self.expect_failure(block, err, lineno=4)
+
+    def test_double_slash(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                /
+                b: int
+                /
+        """
+        err = "Function 'bar' uses '/' more than once."
+        self.expect_failure(block, err)
 
     def test_mix_star_and_slash(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-   x: int
-   y: int
-   *
-   z: int
-   /
-""")
+        block = """
+            module foo
+            foo.bar
+               x: int
+               y: int
+               *
+               z: int
+               /
+        """
+        err = "Function 'bar': '/' must precede '*'"
+        self.expect_failure(block, err)
+
+    def test_depr_star_must_come_after_slash(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                * [from 3.14]
+                /
+                b: int
+            Docstring.
+        """
+        err = "Function 'bar': '/' must precede '* [from ...]'"
+        self.expect_failure(block, err, lineno=4)
+
+    def test_depr_star_must_come_after_depr_slash(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                * [from 3.14]
+                / [from 3.14]
+                b: int
+            Docstring.
+        """
+        err = "Function 'bar': '/ [from ...]' must precede '* [from ...]'"
+        self.expect_failure(block, err, lineno=4)
+
+    def test_star_must_come_after_depr_slash(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                *
+                / [from 3.14]
+                b: int
+            Docstring.
+        """
+        err = "Function 'bar': '/ [from ...]' must precede '*'"
+        self.expect_failure(block, err, lineno=4)
+
+    def test_depr_slash_must_come_after_slash(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                / [from 3.14]
+                /
+                b: int
+            Docstring.
+        """
+        err = "Function 'bar': '/' must precede '/ [from ...]'"
+        self.expect_failure(block, err, lineno=4)
 
     def test_parameters_not_permitted_after_slash_for_now(self):
-        self.parse_function_should_fail("""
-module foo
-foo.bar
-    /
-    x: int
-""")
+        block = """
+            module foo
+            foo.bar
+                /
+                x: int
+        """
+        err = (
+            "Function 'bar' has an unsupported group configuration. "
+            "(Unexpected state 0.d)"
+        )
+        self.expect_failure(block, err)
 
     def test_parameters_no_more_than_one_vararg(self):
-        s = self.parse_function_should_fail("""
-module foo
-foo.bar
-   *vararg1: object
-   *vararg2: object
-""")
-        self.assertEqual(s, "Error on line 0:\nToo many var args\n")
+        err = "Too many var args"
+        block = """
+            module foo
+            foo.bar
+               *vararg1: object
+               *vararg2: object
+        """
+        self.expect_failure(block, err, lineno=0)
 
     def test_function_not_at_column_0(self):
         function = self.parse_function("""
-  module foo
-  foo.bar
-    x: int
-      Nested docstring here, goeth.
-    *
-    y: str
-  Not at column 0!
-""")
-        self.assertEqual("""
-bar($module, /, x, *, y)
---
+              module foo
+              foo.bar
+                x: int
+                  Nested docstring here, goeth.
+                *
+                y: str
+              Not at column 0!
+        """)
+        self.checkDocstring(function, """
+            bar($module, /, x, *, y)
+            --
 
-Not at column 0!
+            Not at column 0!
 
-  x
-    Nested docstring here, goeth.
-""".strip(), function.docstring)
+              x
+                Nested docstring here, goeth.
+        """)
+
+    def test_docstring_only_summary(self):
+        function = self.parse_function("""
+              module m
+              m.f
+              summary
+        """)
+        self.checkDocstring(function, """
+            f($module, /)
+            --
+
+            summary
+        """)
+
+    def test_docstring_empty_lines(self):
+        function = self.parse_function("""
+              module m
+              m.f
+
+
+        """)
+        self.checkDocstring(function, """
+            f($module, /)
+            --
+        """)
+
+    def test_docstring_explicit_params_placement(self):
+        function = self.parse_function("""
+              module m
+              m.f
+                a: int
+                    Param docstring for 'a' will be included
+                b: int
+                c: int
+                    Param docstring for 'c' will be included
+              This is the summary line.
+
+              We'll now place the params section here:
+              {parameters}
+              And now for something completely different!
+              (Note the added newline)
+        """)
+        self.checkDocstring(function, """
+            f($module, /, a, b, c)
+            --
+
+            This is the summary line.
+
+            We'll now place the params section here:
+              a
+                Param docstring for 'a' will be included
+              c
+                Param docstring for 'c' will be included
+
+            And now for something completely different!
+            (Note the added newline)
+        """)
+
+    def test_indent_stack_no_tabs(self):
+        block = """
+            module foo
+            foo.bar
+               *vararg1: object
+            \t*vararg2: object
+        """
+        err = ("Tab characters are illegal in the Clinic DSL: "
+               r"'\t*vararg2: object'")
+        self.expect_failure(block, err)
+
+    def test_indent_stack_illegal_outdent(self):
+        block = """
+            module foo
+            foo.bar
+              a: object
+             b: object
+        """
+        err = "Illegal outdent"
+        self.expect_failure(block, err)
 
     def test_directive(self):
-        c = FakeClinic()
-        parser = DSLParser(c)
+        parser = DSLParser(_make_clinic())
         parser.flag = False
         parser.directives['setflag'] = lambda : setattr(parser, 'flag', True)
         block = clinic.Block("setflag")
@@ -772,7 +2075,137 @@ def test_directive(self):
     def test_legacy_converters(self):
         block = self.parse('module os\nos.access\n   path: "s"')
         module, function = block.signatures
-        self.assertIsInstance((function.parameters['path']).converter, clinic.str_converter)
+        conv = (function.parameters['path']).converter
+        self.assertIsInstance(conv, clinic.str_converter)
+
+    def test_legacy_converters_non_string_constant_annotation(self):
+        err = "Annotations must be either a name, a function call, or a string"
+        dataset = (
+            'module os\nos.access\n   path: 42',
+            'module os\nos.access\n   path: 42.42',
+            'module os\nos.access\n   path: 42j',
+            'module os\nos.access\n   path: b"42"',
+        )
+        for block in dataset:
+            with self.subTest(block=block):
+                self.expect_failure(block, err, lineno=2)
+
+    def test_other_bizarre_things_in_annotations_fail(self):
+        err = "Annotations must be either a name, a function call, or a string"
+        dataset = (
+            'module os\nos.access\n   path: {"some": "dictionary"}',
+            'module os\nos.access\n   path: ["list", "of", "strings"]',
+            'module os\nos.access\n   path: (x for x in range(42))',
+        )
+        for block in dataset:
+            with self.subTest(block=block):
+                self.expect_failure(block, err, lineno=2)
+
+    def test_kwarg_splats_disallowed_in_function_call_annotations(self):
+        err = "Cannot use a kwarg splat in a function-call annotation"
+        dataset = (
+            'module fo\nfo.barbaz\n   o: bool(**{None: "bang!"})',
+            'module fo\nfo.barbaz -> bool(**{None: "bang!"})',
+            'module fo\nfo.barbaz -> bool(**{"bang": 42})',
+            'module fo\nfo.barbaz\n   o: bool(**{"bang": None})',
+        )
+        for block in dataset:
+            with self.subTest(block=block):
+                self.expect_failure(block, err)
+
+    def test_self_param_placement(self):
+        err = (
+            "A 'self' parameter, if specified, must be the very first thing "
+            "in the parameter block."
+        )
+        block = """
+            module foo
+            foo.func
+                a: int
+                self: self(type="PyObject *")
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_self_param_cannot_be_optional(self):
+        err = "A 'self' parameter cannot be marked optional."
+        block = """
+            module foo
+            foo.func
+                self: self(type="PyObject *") = None
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_defining_class_param_placement(self):
+        err = (
+            "A 'defining_class' parameter, if specified, must either be the "
+            "first thing in the parameter block, or come just after 'self'."
+        )
+        block = """
+            module foo
+            foo.func
+                self: self(type="PyObject *")
+                a: int
+                cls: defining_class
+        """
+        self.expect_failure(block, err, lineno=4)
+
+    def test_defining_class_param_cannot_be_optional(self):
+        err = "A 'defining_class' parameter cannot be marked optional."
+        block = """
+            module foo
+            foo.func
+                cls: defining_class(type="PyObject *") = None
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_slot_methods_cannot_access_defining_class(self):
+        block = """
+            module foo
+            class Foo "" ""
+            Foo.__init__
+                cls: defining_class
+                a: object
+        """
+        err = "Slot methods cannot access their defining class."
+        with self.assertRaisesRegex(ValueError, err):
+            self.parse_function(block)
+
+    def test_new_must_be_a_class_method(self):
+        err = "'__new__' must be a class method!"
+        block = """
+            module foo
+            class Foo "" ""
+            Foo.__new__
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_init_must_be_a_normal_method(self):
+        err_template = "'__init__' must be a normal method; got 'FunctionKind.{}'!"
+        annotations = {
+            "@classmethod": "CLASS_METHOD",
+            "@staticmethod": "STATIC_METHOD",
+            "@getter": "GETTER",
+        }
+        for annotation, invalid_kind in annotations.items():
+            with self.subTest(annotation=annotation, invalid_kind=invalid_kind):
+                block = f"""
+                    module foo
+                    class Foo "" ""
+                    {annotation}
+                    Foo.__init__
+                """
+                expected_error = err_template.format(invalid_kind)
+                self.expect_failure(block, expected_error, lineno=3)
+
+    def test_duplicate_coexist(self):
+        err = "Called @coexist twice"
+        block = """
+            module m
+            @coexist
+            @coexist
+            m.fn
+        """
+        self.expect_failure(block, err, lineno=2)
 
     def test_unused_param(self):
         block = self.parse("""
@@ -812,21 +2245,6 @@ def test_unused_param(self):
                 parser_decl = p.simple_declaration(in_parser=True)
                 self.assertNotIn("Py_UNUSED", parser_decl)
 
-    def parse(self, text):
-        c = FakeClinic()
-        parser = DSLParser(c)
-        block = clinic.Block(text)
-        parser.parse(block)
-        return block
-
-    def parse_function(self, text, signatures_in_block=2, function_index=1):
-        block = self.parse(text)
-        s = block.signatures
-        self.assertEqual(len(s), signatures_in_block)
-        assert isinstance(s[0], clinic.Module)
-        assert isinstance(s[function_index], clinic.Function)
-        return s[function_index]
-
     def test_scaffolding(self):
         # test repr on special values
         self.assertEqual(repr(clinic.unspecified), '<Unspecified>')
@@ -834,47 +2252,529 @@ def test_scaffolding(self):
 
         # test that fail fails
         with support.captured_stdout() as stdout:
-            with self.assertRaises(SystemExit):
-                clinic.fail('The igloos are melting!', filename='clown.txt', line_number=69)
-        self.assertEqual(stdout.getvalue(), 'Error in file "clown.txt" on line 69:\nThe igloos are melting!\n')
+            errmsg = 'The igloos are melting'
+            with self.assertRaisesRegex(clinic.ClinicError, errmsg) as cm:
+                clinic.fail(errmsg, filename='clown.txt', line_number=69)
+            exc = cm.exception
+            self.assertEqual(exc.filename, 'clown.txt')
+            self.assertEqual(exc.lineno, 69)
+            self.assertEqual(stdout.getvalue(), "")
+
+    def test_non_ascii_character_in_docstring(self):
+        block = """
+            module test
+            test.fn
+                a: int
+                    á param docstring
+            docstring fü bár baß
+        """
+        with support.captured_stdout() as stdout:
+            self.parse(block)
+        # The line numbers are off; this is a known limitation.
+        expected = dedent("""\
+            Warning in file 'clinic_tests' on line 0:
+            Non-ascii characters are not allowed in docstrings: 'á'
+
+            Warning in file 'clinic_tests' on line 0:
+            Non-ascii characters are not allowed in docstrings: 'ü', 'á', 'ß'
+
+        """)
+        self.assertEqual(stdout.getvalue(), expected)
+
+    def test_illegal_c_identifier(self):
+        err = "Illegal C identifier: 17a"
+        block = """
+            module test
+            test.fn
+                a as 17a: int
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_cannot_convert_special_method(self):
+        err = "'__len__' is a special method and cannot be converted"
+        block = """
+            class T "" ""
+            T.__len__
+        """
+        self.expect_failure(block, err, lineno=1)
+
+    def test_cannot_specify_pydefault_without_default(self):
+        err = "You can't specify py_default without specifying a default value!"
+        block = """
+            fn
+                a: object(py_default='NULL')
+        """
+        self.expect_failure(block, err, lineno=1)
+
+    def test_vararg_cannot_take_default_value(self):
+        err = "Vararg can't take a default value!"
+        block = """
+            fn
+                *args: object = None
+        """
+        self.expect_failure(block, err, lineno=1)
+
+    def test_default_is_not_of_correct_type(self):
+        err = ("int_converter: default value 2.5 for field 'a' "
+               "is not of type 'int'")
+        block = """
+            fn
+                a: int = 2.5
+        """
+        self.expect_failure(block, err, lineno=1)
+
+    def test_invalid_legacy_converter(self):
+        err = "'fhi' is not a valid legacy converter"
+        block = """
+            fn
+                a: 'fhi'
+        """
+        self.expect_failure(block, err, lineno=1)
+
+    def test_parent_class_or_module_does_not_exist(self):
+        err = "Parent class or module 'baz' does not exist"
+        block = """
+            module m
+            baz.func
+        """
+        self.expect_failure(block, err, lineno=1)
+
+    def test_duplicate_param_name(self):
+        err = "You can't have two parameters named 'a'"
+        block = """
+            module m
+            m.func
+                a: int
+                a: float
+        """
+        self.expect_failure(block, err, lineno=3)
+
+    def test_param_requires_custom_c_name(self):
+        err = "Parameter 'module' requires a custom C name"
+        block = """
+            module m
+            m.func
+                module: int
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_state_func_docstring_assert_no_group(self):
+        err = "Function 'func' has a ']' without a matching '['"
+        block = """
+            module m
+            m.func
+                ]
+            docstring
+        """
+        self.expect_failure(block, err, lineno=2)
+
+    def test_state_func_docstring_no_summary(self):
+        err = "Docstring for 'm.func' does not have a summary line!"
+        block = """
+            module m
+            m.func
+            docstring1
+            docstring2
+        """
+        self.expect_failure(block, err, lineno=0)
+
+    def test_state_func_docstring_only_one_param_template(self):
+        err = "You may not specify {parameters} more than once in a docstring!"
+        block = """
+            module m
+            m.func
+            docstring summary
+
+            these are the params:
+                {parameters}
+            these are the params again:
+                {parameters}
+        """
+        self.expect_failure(block, err, lineno=0)
 
 
 class ClinicExternalTest(TestCase):
     maxDiff = None
 
+    def run_clinic(self, *args):
+        with (
+            support.captured_stdout() as out,
+            support.captured_stderr() as err,
+            self.assertRaises(SystemExit) as cm
+        ):
+            clinic.main(args)
+        return out.getvalue(), err.getvalue(), cm.exception.code
+
+    def expect_success(self, *args):
+        out, err, code = self.run_clinic(*args)
+        if code != 0:
+            self.fail("\n".join([f"Unexpected failure: {args=}", out, err]))
+        self.assertEqual(err, "")
+        return out
+
+    def expect_failure(self, *args):
+        out, err, code = self.run_clinic(*args)
+        self.assertNotEqual(code, 0, f"Unexpected success: {args=}")
+        return out, err
+
     def test_external(self):
-        # bpo-42398: Test that the destination file is left unchanged if the
-        # content does not change. Moreover, check also that the file
-        # modification time does not change in this case.
-        source = support.findfile('clinic.test')
-        with open(source, 'r', encoding='utf-8') as f:
+        CLINIC_TEST = 'clinic.test.c'
+        source = support.findfile(CLINIC_TEST)
+        with open(source, encoding='utf-8') as f:
             orig_contents = f.read()
 
-        with os_helper.temp_dir() as tmp_dir:
-            testfile = os.path.join(tmp_dir, 'clinic.test.c')
-            with open(testfile, 'w', encoding='utf-8') as f:
-                f.write(orig_contents)
-            old_mtime_ns = os.stat(testfile).st_mtime_ns
-
-            clinic.parse_file(testfile)
+        # Run clinic CLI and verify that it does not complain.
+        self.addCleanup(unlink, TESTFN)
+        out = self.expect_success("-f", "-o", TESTFN, source)
+        self.assertEqual(out, "")
 
-            with open(testfile, 'r', encoding='utf-8') as f:
-                new_contents = f.read()
-            new_mtime_ns = os.stat(testfile).st_mtime_ns
+        with open(TESTFN, encoding='utf-8') as f:
+            new_contents = f.read()
 
         self.assertEqual(new_contents, orig_contents)
+
+    def test_no_change(self):
+        # bpo-42398: Test that the destination file is left unchanged if the
+        # content does not change. Moreover, check also that the file
+        # modification time does not change in this case.
+        code = dedent("""
+            /*[clinic input]
+            [clinic start generated code]*/
+            /*[clinic end generated code: output=da39a3ee5e6b4b0d input=da39a3ee5e6b4b0d]*/
+        """)
+        with os_helper.temp_dir() as tmp_dir:
+            fn = os.path.join(tmp_dir, "test.c")
+            with open(fn, "w", encoding="utf-8") as f:
+                f.write(code)
+            pre_mtime = os.stat(fn).st_mtime_ns
+            self.expect_success(fn)
+            post_mtime = os.stat(fn).st_mtime_ns
         # Don't change the file modification time
         # if the content does not change
-        self.assertEqual(new_mtime_ns, old_mtime_ns)
+        self.assertEqual(pre_mtime, post_mtime)
+
+    def test_cli_force(self):
+        invalid_input = dedent("""
+            /*[clinic input]
+            output preset block
+            module test
+            test.fn
+                a: int
+            [clinic start generated code]*/
+
+            const char *hand_edited = "output block is overwritten";
+            /*[clinic end generated code: output=bogus input=bogus]*/
+        """)
+        fail_msg = (
+            "Checksum mismatch! Expected 'bogus', computed '2ed19'. "
+            "Suggested fix: remove all generated code including the end marker, "
+            "or use the '-f' option.\n"
+        )
+        with os_helper.temp_dir() as tmp_dir:
+            fn = os.path.join(tmp_dir, "test.c")
+            with open(fn, "w", encoding="utf-8") as f:
+                f.write(invalid_input)
+            # First, run the CLI without -f and expect failure.
+            # Note, we cannot check the entire fail msg, because the path to
+            # the tmp file will change for every run.
+            _, err = self.expect_failure(fn)
+            self.assertTrue(err.endswith(fail_msg),
+                            f"{err!r} does not end with {fail_msg!r}")
+            # Then, force regeneration; success expected.
+            out = self.expect_success("-f", fn)
+            self.assertEqual(out, "")
+            # Verify by checking the checksum.
+            checksum = (
+                "/*[clinic end generated code: "
+                "output=c16447c01510dfb3 input=9543a8d2da235301]*/\n"
+            )
+            with open(fn, encoding='utf-8') as f:
+                generated = f.read()
+            self.assertTrue(generated.endswith(checksum),
+                            (generated, checksum))
+
+    def test_cli_make(self):
+        c_code = dedent("""
+            /*[clinic input]
+            [clinic start generated code]*/
+        """)
+        py_code = "pass"
+        c_files = "file1.c", "file2.c"
+        py_files = "file1.py", "file2.py"
+
+        def create_files(files, srcdir, code):
+            for fn in files:
+                path = os.path.join(srcdir, fn)
+                with open(path, "w", encoding="utf-8") as f:
+                    f.write(code)
 
+        with os_helper.temp_dir() as tmp_dir:
+            # add some folders, some C files and a Python file
+            create_files(c_files, tmp_dir, c_code)
+            create_files(py_files, tmp_dir, py_code)
+
+            # create C files in externals/ dir
+            ext_path = os.path.join(tmp_dir, "externals")
+            with os_helper.temp_dir(path=ext_path) as externals:
+                create_files(c_files, externals, c_code)
+
+                # run clinic in verbose mode with --make on tmpdir
+                out = self.expect_success("-v", "--make", "--srcdir", tmp_dir)
+
+            # expect verbose mode to only mention the C files in tmp_dir
+            for filename in c_files:
+                with self.subTest(filename=filename):
+                    path = os.path.join(tmp_dir, filename)
+                    self.assertIn(path, out)
+            for filename in py_files:
+                with self.subTest(filename=filename):
+                    path = os.path.join(tmp_dir, filename)
+                    self.assertNotIn(path, out)
+            # don't expect C files from the externals dir
+            for filename in c_files:
+                with self.subTest(filename=filename):
+                    path = os.path.join(ext_path, filename)
+                    self.assertNotIn(path, out)
+
+    def test_cli_make_exclude(self):
+        code = dedent("""
+            /*[clinic input]
+            [clinic start generated code]*/
+        """)
+        with os_helper.temp_dir(quiet=False) as tmp_dir:
+            # add some folders, some C files and a Python file
+            for fn in "file1.c", "file2.c", "file3.c", "file4.c":
+                path = os.path.join(tmp_dir, fn)
+                with open(path, "w", encoding="utf-8") as f:
+                    f.write(code)
+
+            # Run clinic in verbose mode with --make on tmpdir.
+            # Exclude file2.c and file3.c.
+            out = self.expect_success(
+                "-v", "--make", "--srcdir", tmp_dir,
+                "--exclude", os.path.join(tmp_dir, "file2.c"),
+                # The added ./ should be normalised away.
+                "--exclude", os.path.join(tmp_dir, "./file3.c"),
+                # Relative paths should also work.
+                "--exclude", "file4.c"
+            )
+
+            # expect verbose mode to only mention the C files in tmp_dir
+            self.assertIn("file1.c", out)
+            self.assertNotIn("file2.c", out)
+            self.assertNotIn("file3.c", out)
+            self.assertNotIn("file4.c", out)
+
+    def test_cli_verbose(self):
+        with os_helper.temp_dir() as tmp_dir:
+            fn = os.path.join(tmp_dir, "test.c")
+            with open(fn, "w", encoding="utf-8") as f:
+                f.write("")
+            out = self.expect_success("-v", fn)
+            self.assertEqual(out.strip(), fn)
+
+    def test_cli_help(self):
+        out = self.expect_success("-h")
+        self.assertIn("usage: clinic.py", out)
+
+    def test_cli_converters(self):
+        prelude = dedent("""
+            Legacy converters:
+                B C D L O S U Y Z Z#
+                b c d f h i l p s s# s* u u# w* y y# y* z z# z*
+
+            Converters:
+        """)
+        expected_converters = (
+            "bool",
+            "byte",
+            "char",
+            "defining_class",
+            "double",
+            "fildes",
+            "float",
+            "int",
+            "long",
+            "long_long",
+            "object",
+            "Py_buffer",
+            "Py_complex",
+            "Py_ssize_t",
+            "Py_UNICODE",
+            "PyByteArrayObject",
+            "PyBytesObject",
+            "self",
+            "short",
+            "size_t",
+            "slice_index",
+            "str",
+            "unicode",
+            "unsigned_char",
+            "unsigned_int",
+            "unsigned_long",
+            "unsigned_long_long",
+            "unsigned_short",
+        )
+        finale = dedent("""
+            Return converters:
+                bool()
+                double()
+                float()
+                init()
+                int()
+                long()
+                Py_ssize_t()
+                size_t()
+                unsigned_int()
+                unsigned_long()
+
+            All converters also accept (c_default=None, py_default=None, annotation=None).
+            All return converters also accept (py_default=None).
+        """)
+        out = self.expect_success("--converters")
+        # We cannot simply compare the output, because the repr of the *accept*
+        # param may change (it's a set, thus unordered). So, let's compare the
+        # start and end of the expected output, and then assert that the
+        # converters appear lined up in alphabetical order.
+        self.assertTrue(out.startswith(prelude), out)
+        self.assertTrue(out.endswith(finale), out)
+
+        out = out.removeprefix(prelude)
+        out = out.removesuffix(finale)
+        lines = out.split("\n")
+        for converter, line in zip(expected_converters, lines):
+            line = line.lstrip()
+            with self.subTest(converter=converter):
+                self.assertTrue(
+                    line.startswith(converter),
+                    f"expected converter {converter!r}, got {line!r}"
+                )
+
+    def test_cli_fail_converters_and_filename(self):
+        _, err = self.expect_failure("--converters", "test.c")
+        msg = "can't specify --converters and a filename at the same time"
+        self.assertIn(msg, err)
+
+    def test_cli_fail_no_filename(self):
+        _, err = self.expect_failure()
+        self.assertIn("no input files", err)
+
+    def test_cli_fail_output_and_multiple_files(self):
+        _, err = self.expect_failure("-o", "out.c", "input.c", "moreinput.c")
+        msg = "error: can't use -o with multiple filenames"
+        self.assertIn(msg, err)
+
+    def test_cli_fail_filename_or_output_and_make(self):
+        msg = "can't use -o or filenames with --make"
+        for opts in ("-o", "out.c"), ("filename.c",):
+            with self.subTest(opts=opts):
+                _, err = self.expect_failure("--make", *opts)
+                self.assertIn(msg, err)
+
+    def test_cli_fail_make_without_srcdir(self):
+        _, err = self.expect_failure("--make", "--srcdir", "")
+        msg = "error: --srcdir must not be empty with --make"
+        self.assertIn(msg, err)
+
+    def test_file_dest(self):
+        block = dedent("""
+            /*[clinic input]
+            destination test new file {path}.h
+            output everything test
+            func
+                a: object
+                /
+            [clinic start generated code]*/
+        """)
+        expected_checksum_line = (
+            "/*[clinic end generated code: "
+            "output=da39a3ee5e6b4b0d input=b602ab8e173ac3bd]*/\n"
+        )
+        expected_output = dedent("""\
+            /*[clinic input]
+            preserve
+            [clinic start generated code]*/
 
-ac_tester = import_helper.import_module('_testclinic')
+            PyDoc_VAR(func__doc__);
 
+            PyDoc_STRVAR(func__doc__,
+            "func($module, a, /)\\n"
+            "--\\n"
+            "\\n");
 
+            #define FUNC_METHODDEF    \\
+                {"func", (PyCFunction)func, METH_O, func__doc__},
+
+            static PyObject *
+            func(PyObject *module, PyObject *a)
+            /*[clinic end generated code: output=3dde2d13002165b9 input=a9049054013a1b77]*/
+        """)
+        with os_helper.temp_dir() as tmp_dir:
+            in_fn = os.path.join(tmp_dir, "test.c")
+            out_fn = os.path.join(tmp_dir, "test.c.h")
+            with open(in_fn, "w", encoding="utf-8") as f:
+                f.write(block)
+            with open(out_fn, "w", encoding="utf-8") as f:
+                f.write("")  # Write an empty output file!
+            # Clinic should complain about the empty output file.
+            _, err = self.expect_failure(in_fn)
+            expected_err = (f"Modified destination file {out_fn!r}; "
+                            "not overwriting!")
+            self.assertIn(expected_err, err)
+            # Run clinic again, this time with the -f option.
+            _ = self.expect_success("-f", in_fn)
+            # Read back the generated output.
+            with open(in_fn, encoding="utf-8") as f:
+                data = f.read()
+                expected_block = f"{block}{expected_checksum_line}"
+                self.assertEqual(data, expected_block)
+            with open(out_fn, encoding="utf-8") as f:
+                data = f.read()
+                self.assertEqual(data, expected_output)
+
+try:
+    import _testclinic as ac_tester
+except ImportError:
+    ac_tester = None
+
+@unittest.skipIf(ac_tester is None, "_testclinic is missing")
 class ClinicFunctionalTest(unittest.TestCase):
     locals().update((name, getattr(ac_tester, name))
                     for name in dir(ac_tester) if name.startswith('test_'))
 
+    def check_depr(self, regex, fn, /, *args, **kwds):
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            # Record the line number, so we're sure we've got the correct stack
+            # level on the deprecation warning.
+            _, lineno = fn(*args, **kwds), sys._getframe().f_lineno
+        self.assertEqual(cm.filename, __file__)
+        self.assertEqual(cm.lineno, lineno)
+
+    def check_depr_star(self, pnames, fn, /, *args, name=None, **kwds):
+        if name is None:
+            name = fn.__qualname__
+            if isinstance(fn, type):
+                name = f'{fn.__module__}.{name}'
+        regex = (
+            fr"Passing( more than)?( [0-9]+)? positional argument(s)? to "
+            fr"{re.escape(name)}\(\) is deprecated. Parameters? {pnames} will "
+            fr"become( a)? keyword-only parameters? in Python 3\.14"
+        )
+        self.check_depr(regex, fn, *args, **kwds)
+
+    def check_depr_kwd(self, pnames, fn, *args, name=None, **kwds):
+        if name is None:
+            name = fn.__qualname__
+            if isinstance(fn, type):
+                name = f'{fn.__module__}.{name}'
+        pl = 's' if ' ' in pnames else ''
+        regex = (
+            fr"Passing keyword argument{pl} {pnames} to "
+            fr"{re.escape(name)}\(\) is deprecated. Parameter{pl} {pnames} "
+            fr"will become positional-only in Python 3\.14."
+        )
+        self.check_depr(regex, fn, *args, **kwds)
+
     def test_objects_converter(self):
         with self.assertRaises(TypeError):
             ac_tester.objects_converter()
@@ -1276,6 +3176,10 @@ def test_posonly_vararg(self):
         self.assertEqual(ac_tester.posonly_vararg(1, 2), (1, 2, ()))
         self.assertEqual(ac_tester.posonly_vararg(1, b=2), (1, 2, ()))
         self.assertEqual(ac_tester.posonly_vararg(1, 2, 3, 4), (1, 2, (3, 4)))
+        with self.assertRaises(TypeError):
+            ac_tester.posonly_vararg(b=4)
+        with self.assertRaises(TypeError):
+            ac_tester.posonly_vararg(1, 2, 3, b=4)
 
     def test_vararg_and_posonly(self):
         with self.assertRaises(TypeError):
@@ -1319,10 +3223,44 @@ def test_gh_99233_refcount(self):
         self.assertEqual(arg_refcount_origin, arg_refcount_after)
 
     def test_gh_99240_double_free(self):
-        expected_error = r'gh_99240_double_free\(\) argument 2 must be encoded string without null bytes, not str'
-        with self.assertRaisesRegex(TypeError, expected_error):
+        err = re.escape(
+            "gh_99240_double_free() argument 2 must be encoded string "
+            "without null bytes, not str"
+        )
+        with self.assertRaisesRegex(TypeError, err):
             ac_tester.gh_99240_double_free('a', '\0b')
 
+    def test_null_or_tuple_for_varargs(self):
+        # All of these should not crash:
+        valid_args_for_test = [
+            (('a',), {},
+             ('a', (), False)),
+            (('a', 1, 2, 3), {'covariant': True},
+             ('a', (1, 2, 3), True)),
+            ((), {'name': 'a'},
+             ('a', (), False)),
+            ((), {'name': 'a', 'covariant': True},
+             ('a', (), True)),
+            ((), {'covariant': True, 'name': 'a'},
+             ('a', (), True)),
+        ]
+        for args, kwargs, expected in valid_args_for_test:
+            with self.subTest(args=args, kwargs=kwargs):
+                self.assertEqual(
+                    ac_tester.null_or_tuple_for_varargs(*args, **kwargs),
+                    expected,
+                )
+
+    def test_null_or_tuple_for_varargs_error(self):
+        with self.assertRaises(TypeError):
+            ac_tester.null_or_tuple_for_varargs(covariant=True)
+        with self.assertRaises(TypeError):
+            ac_tester.null_or_tuple_for_varargs(1, name='a')
+        with self.assertRaises(TypeError):
+            ac_tester.null_or_tuple_for_varargs(1, 2, 3, name='a', covariant=True)
+        with self.assertRaises(TypeError):
+            ac_tester.null_or_tuple_for_varargs(1, 2, 3, covariant=True, name='a')
+
     def test_cloned_func_exception_message(self):
         incorrect_arg = -1  # f1() and f2() accept a single str
         with self.assertRaisesRegex(TypeError, "clone_f1"):
@@ -1336,6 +3274,683 @@ def test_cloned_func_with_converter_exception_message(self):
                 func = getattr(ac_tester, name)
                 self.assertEqual(func(), name)
 
+    def test_depr_star_new(self):
+        cls = ac_tester.DeprStarNew
+        cls()
+        cls(a=None)
+        self.check_depr_star("'a'", cls, None)
+
+    def test_depr_star_new_cloned(self):
+        fn = ac_tester.DeprStarNew().cloned
+        fn()
+        fn(a=None)
+        self.check_depr_star("'a'", fn, None, name='_testclinic.DeprStarNew.cloned')
+
+    def test_depr_star_init(self):
+        cls = ac_tester.DeprStarInit
+        cls()
+        cls(a=None)
+        self.check_depr_star("'a'", cls, None)
+
+    def test_depr_star_init_cloned(self):
+        fn = ac_tester.DeprStarInit().cloned
+        fn()
+        fn(a=None)
+        self.check_depr_star("'a'", fn, None, name='_testclinic.DeprStarInit.cloned')
+
+    def test_depr_star_init_noinline(self):
+        cls = ac_tester.DeprStarInitNoInline
+        self.assertRaises(TypeError, cls, "a")
+        cls(a="a", b="b")
+        cls(a="a", b="b", c="c")
+        cls("a", b="b")
+        cls("a", b="b", c="c")
+        check = partial(self.check_depr_star, "'b' and 'c'", cls)
+        check("a", "b")
+        check("a", "b", "c")
+        check("a", "b", c="c")
+        self.assertRaises(TypeError, cls, "a", "b", "c", "d")
+
+    def test_depr_kwd_new(self):
+        cls = ac_tester.DeprKwdNew
+        cls()
+        cls(None)
+        self.check_depr_kwd("'a'", cls, a=None)
+
+    def test_depr_kwd_init(self):
+        cls = ac_tester.DeprKwdInit
+        cls()
+        cls(None)
+        self.check_depr_kwd("'a'", cls, a=None)
+
+    def test_depr_kwd_init_noinline(self):
+        cls = ac_tester.DeprKwdInitNoInline
+        cls = ac_tester.depr_star_noinline
+        self.assertRaises(TypeError, cls, "a")
+        cls(a="a", b="b")
+        cls(a="a", b="b", c="c")
+        cls("a", b="b")
+        cls("a", b="b", c="c")
+        check = partial(self.check_depr_star, "'b' and 'c'", cls)
+        check("a", "b")
+        check("a", "b", "c")
+        check("a", "b", c="c")
+        self.assertRaises(TypeError, cls, "a", "b", "c", "d")
+
+    def test_depr_star_pos0_len1(self):
+        fn = ac_tester.depr_star_pos0_len1
+        fn(a=None)
+        self.check_depr_star("'a'", fn, "a")
+
+    def test_depr_star_pos0_len2(self):
+        fn = ac_tester.depr_star_pos0_len2
+        fn(a=0, b=0)
+        check = partial(self.check_depr_star, "'a' and 'b'", fn)
+        check("a", b=0)
+        check("a", "b")
+
+    def test_depr_star_pos0_len3_with_kwd(self):
+        fn = ac_tester.depr_star_pos0_len3_with_kwd
+        fn(a=0, b=0, c=0, d=0)
+        check = partial(self.check_depr_star, "'a', 'b' and 'c'", fn)
+        check("a", b=0, c=0, d=0)
+        check("a", "b", c=0, d=0)
+        check("a", "b", "c", d=0)
+
+    def test_depr_star_pos1_len1_opt(self):
+        fn = ac_tester.depr_star_pos1_len1_opt
+        fn(a=0, b=0)
+        fn("a", b=0)
+        fn(a=0)  # b is optional
+        check = partial(self.check_depr_star, "'b'", fn)
+        check("a", "b")
+
+    def test_depr_star_pos1_len1(self):
+        fn = ac_tester.depr_star_pos1_len1
+        fn(a=0, b=0)
+        fn("a", b=0)
+        check = partial(self.check_depr_star, "'b'", fn)
+        check("a", "b")
+
+    def test_depr_star_pos1_len2_with_kwd(self):
+        fn = ac_tester.depr_star_pos1_len2_with_kwd
+        fn(a=0, b=0, c=0, d=0),
+        fn("a", b=0, c=0, d=0),
+        check = partial(self.check_depr_star, "'b' and 'c'", fn)
+        check("a", "b", c=0, d=0),
+        check("a", "b", "c", d=0),
+
+    def test_depr_star_pos2_len1(self):
+        fn = ac_tester.depr_star_pos2_len1
+        fn(a=0, b=0, c=0)
+        fn("a", b=0, c=0)
+        fn("a", "b", c=0)
+        check = partial(self.check_depr_star, "'c'", fn)
+        check("a", "b", "c")
+
+    def test_depr_star_pos2_len2(self):
+        fn = ac_tester.depr_star_pos2_len2
+        fn(a=0, b=0, c=0, d=0)
+        fn("a", b=0, c=0, d=0)
+        fn("a", "b", c=0, d=0)
+        check = partial(self.check_depr_star, "'c' and 'd'", fn)
+        check("a", "b", "c", d=0)
+        check("a", "b", "c", "d")
+
+    def test_depr_star_pos2_len2_with_kwd(self):
+        fn = ac_tester.depr_star_pos2_len2_with_kwd
+        fn(a=0, b=0, c=0, d=0, e=0)
+        fn("a", b=0, c=0, d=0, e=0)
+        fn("a", "b", c=0, d=0, e=0)
+        check = partial(self.check_depr_star, "'c' and 'd'", fn)
+        check("a", "b", "c", d=0, e=0)
+        check("a", "b", "c", "d", e=0)
+
+    def test_depr_star_noinline(self):
+        fn = ac_tester.depr_star_noinline
+        self.assertRaises(TypeError, fn, "a")
+        fn(a="a", b="b")
+        fn(a="a", b="b", c="c")
+        fn("a", b="b")
+        fn("a", b="b", c="c")
+        check = partial(self.check_depr_star, "'b' and 'c'", fn)
+        check("a", "b")
+        check("a", "b", "c")
+        check("a", "b", c="c")
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d")
+
+    def test_depr_star_multi(self):
+        fn = ac_tester.depr_star_multi
+        self.assertRaises(TypeError, fn, "a")
+        fn("a", b="b", c="c", d="d", e="e", f="f", g="g", h="h")
+        errmsg = (
+            "Passing more than 1 positional argument to depr_star_multi() is deprecated. "
+            "Parameter 'b' will become a keyword-only parameter in Python 3.16. "
+            "Parameters 'c' and 'd' will become keyword-only parameters in Python 3.15. "
+            "Parameters 'e', 'f' and 'g' will become keyword-only parameters in Python 3.14.")
+        check = partial(self.check_depr, re.escape(errmsg), fn)
+        check("a", "b", c="c", d="d", e="e", f="f", g="g", h="h")
+        check("a", "b", "c", d="d", e="e", f="f", g="g", h="h")
+        check("a", "b", "c", "d", e="e", f="f", g="g", h="h")
+        check("a", "b", "c", "d", "e", f="f", g="g", h="h")
+        check("a", "b", "c", "d", "e", "f", g="g", h="h")
+        check("a", "b", "c", "d", "e", "f", "g", h="h")
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d", "e", "f", "g", "h")
+
+    def test_depr_kwd_required_1(self):
+        fn = ac_tester.depr_kwd_required_1
+        fn("a", "b")
+        self.assertRaises(TypeError, fn, "a")
+        self.assertRaises(TypeError, fn, "a", "b", "c")
+        check = partial(self.check_depr_kwd, "'b'", fn)
+        check("a", b="b")
+        self.assertRaises(TypeError, fn, a="a", b="b")
+
+    def test_depr_kwd_required_2(self):
+        fn = ac_tester.depr_kwd_required_2
+        fn("a", "b", "c")
+        self.assertRaises(TypeError, fn, "a", "b")
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d")
+        check = partial(self.check_depr_kwd, "'b' and 'c'", fn)
+        check("a", "b", c="c")
+        check("a", b="b", c="c")
+        self.assertRaises(TypeError, fn, a="a", b="b", c="c")
+
+    def test_depr_kwd_optional_1(self):
+        fn = ac_tester.depr_kwd_optional_1
+        fn("a")
+        fn("a", "b")
+        self.assertRaises(TypeError, fn)
+        self.assertRaises(TypeError, fn, "a", "b", "c")
+        check = partial(self.check_depr_kwd, "'b'", fn)
+        check("a", b="b")
+        self.assertRaises(TypeError, fn, a="a", b="b")
+
+    def test_depr_kwd_optional_2(self):
+        fn = ac_tester.depr_kwd_optional_2
+        fn("a")
+        fn("a", "b")
+        fn("a", "b", "c")
+        self.assertRaises(TypeError, fn)
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d")
+        check = partial(self.check_depr_kwd, "'b' and 'c'", fn)
+        check("a", b="b")
+        check("a", c="c")
+        check("a", b="b", c="c")
+        check("a", c="c", b="b")
+        check("a", "b", c="c")
+        self.assertRaises(TypeError, fn, a="a", b="b", c="c")
+
+    def test_depr_kwd_optional_3(self):
+        fn = ac_tester.depr_kwd_optional_3
+        fn()
+        fn("a")
+        fn("a", "b")
+        fn("a", "b", "c")
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d")
+        check = partial(self.check_depr_kwd, "'a', 'b' and 'c'", fn)
+        check("a", "b", c="c")
+        check("a", b="b")
+        check(a="a")
+
+    def test_depr_kwd_required_optional(self):
+        fn = ac_tester.depr_kwd_required_optional
+        fn("a", "b")
+        fn("a", "b", "c")
+        self.assertRaises(TypeError, fn)
+        self.assertRaises(TypeError, fn, "a")
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d")
+        check = partial(self.check_depr_kwd, "'b' and 'c'", fn)
+        check("a", b="b")
+        check("a", b="b", c="c")
+        check("a", c="c", b="b")
+        check("a", "b", c="c")
+        self.assertRaises(TypeError, fn, "a", c="c")
+        self.assertRaises(TypeError, fn, a="a", b="b", c="c")
+
+    def test_depr_kwd_noinline(self):
+        fn = ac_tester.depr_kwd_noinline
+        fn("a", "b")
+        fn("a", "b", "c")
+        self.assertRaises(TypeError, fn, "a")
+        check = partial(self.check_depr_kwd, "'b' and 'c'", fn)
+        check("a", b="b")
+        check("a", b="b", c="c")
+        check("a", c="c", b="b")
+        check("a", "b", c="c")
+        self.assertRaises(TypeError, fn, "a", c="c")
+        self.assertRaises(TypeError, fn, a="a", b="b", c="c")
+
+    def test_depr_kwd_multi(self):
+        fn = ac_tester.depr_kwd_multi
+        fn("a", "b", "c", "d", "e", "f", "g", h="h")
+        errmsg = (
+            "Passing keyword arguments 'b', 'c', 'd', 'e', 'f' and 'g' to depr_kwd_multi() is deprecated. "
+            "Parameter 'b' will become positional-only in Python 3.14. "
+            "Parameters 'c' and 'd' will become positional-only in Python 3.15. "
+            "Parameters 'e', 'f' and 'g' will become positional-only in Python 3.16.")
+        check = partial(self.check_depr, re.escape(errmsg), fn)
+        check("a", "b", "c", "d", "e", "f", g="g", h="h")
+        check("a", "b", "c", "d", "e", f="f", g="g", h="h")
+        check("a", "b", "c", "d", e="e", f="f", g="g", h="h")
+        check("a", "b", "c", d="d", e="e", f="f", g="g", h="h")
+        check("a", "b", c="c", d="d", e="e", f="f", g="g", h="h")
+        check("a", b="b", c="c", d="d", e="e", f="f", g="g", h="h")
+        self.assertRaises(TypeError, fn, a="a", b="b", c="c", d="d", e="e", f="f", g="g", h="h")
+
+    def test_depr_multi(self):
+        fn = ac_tester.depr_multi
+        self.assertRaises(TypeError, fn, "a", "b", "c", "d", "e", "f", "g")
+        errmsg = (
+            "Passing more than 4 positional arguments to depr_multi() is deprecated. "
+            "Parameter 'e' will become a keyword-only parameter in Python 3.15. "
+            "Parameter 'f' will become a keyword-only parameter in Python 3.14.")
+        check = partial(self.check_depr, re.escape(errmsg), fn)
+        check("a", "b", "c", "d", "e", "f", g="g")
+        check("a", "b", "c", "d", "e", f="f", g="g")
+        fn("a", "b", "c", "d", e="e", f="f", g="g")
+        fn("a", "b", "c", d="d", e="e", f="f", g="g")
+        errmsg = (
+            "Passing keyword arguments 'b' and 'c' to depr_multi() is deprecated. "
+            "Parameter 'b' will become positional-only in Python 3.14. "
+            "Parameter 'c' will become positional-only in Python 3.15.")
+        check = partial(self.check_depr, re.escape(errmsg), fn)
+        check("a", "b", c="c", d="d", e="e", f="f", g="g")
+        check("a", b="b", c="c", d="d", e="e", f="f", g="g")
+        self.assertRaises(TypeError, fn, a="a", b="b", c="c", d="d", e="e", f="f", g="g")
+
+
+try:
+    import _testclinic_limited
+except ImportError:
+    _testclinic_limited = None
+
+@unittest.skipIf(_testclinic_limited is None, "_testclinic_limited is missing")
+class LimitedCAPIFunctionalTest(unittest.TestCase):
+    locals().update((name, getattr(_testclinic_limited, name))
+                    for name in dir(_testclinic_limited) if name.startswith('test_'))
+
+    def test_my_int_func(self):
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_func()
+        self.assertEqual(_testclinic_limited.my_int_func(3), 3)
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_func(1.0)
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_func("xyz")
+
+    def test_my_int_sum(self):
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_sum()
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_sum(1)
+        self.assertEqual(_testclinic_limited.my_int_sum(1, 2), 3)
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_sum(1.0, 2)
+        with self.assertRaises(TypeError):
+            _testclinic_limited.my_int_sum(1, "str")
+
+
+
+class PermutationTests(unittest.TestCase):
+    """Test permutation support functions."""
+
+    def test_permute_left_option_groups(self):
+        expected = (
+            (),
+            (3,),
+            (2, 3),
+            (1, 2, 3),
+        )
+        data = list(zip([1, 2, 3]))  # Generate a list of 1-tuples.
+        actual = tuple(clinic.permute_left_option_groups(data))
+        self.assertEqual(actual, expected)
+
+    def test_permute_right_option_groups(self):
+        expected = (
+            (),
+            (1,),
+            (1, 2),
+            (1, 2, 3),
+        )
+        data = list(zip([1, 2, 3]))  # Generate a list of 1-tuples.
+        actual = tuple(clinic.permute_right_option_groups(data))
+        self.assertEqual(actual, expected)
+
+    def test_permute_optional_groups(self):
+        empty = {
+            "left": (), "required": (), "right": (),
+            "expected": ((),),
+        }
+        noleft1 = {
+            "left": (), "required": ("b",), "right": ("c",),
+            "expected": (
+                ("b",),
+                ("b", "c"),
+            ),
+        }
+        noleft2 = {
+            "left": (), "required": ("b", "c",), "right": ("d",),
+            "expected": (
+                ("b", "c"),
+                ("b", "c", "d"),
+            ),
+        }
+        noleft3 = {
+            "left": (), "required": ("b", "c",), "right": ("d", "e"),
+            "expected": (
+                ("b", "c"),
+                ("b", "c", "d"),
+                ("b", "c", "d", "e"),
+            ),
+        }
+        noright1 = {
+            "left": ("a",), "required": ("b",), "right": (),
+            "expected": (
+                ("b",),
+                ("a", "b"),
+            ),
+        }
+        noright2 = {
+            "left": ("a",), "required": ("b", "c"), "right": (),
+            "expected": (
+                ("b", "c"),
+                ("a", "b", "c"),
+            ),
+        }
+        noright3 = {
+            "left": ("a", "b"), "required": ("c",), "right": (),
+            "expected": (
+                ("c",),
+                ("b", "c"),
+                ("a", "b", "c"),
+            ),
+        }
+        leftandright1 = {
+            "left": ("a",), "required": ("b",), "right": ("c",),
+            "expected": (
+                ("b",),
+                ("a", "b"),  # Prefer left.
+                ("a", "b", "c"),
+            ),
+        }
+        leftandright2 = {
+            "left": ("a", "b"), "required": ("c", "d"), "right": ("e", "f"),
+            "expected": (
+                ("c", "d"),
+                ("b", "c", "d"),       # Prefer left.
+                ("a", "b", "c", "d"),  # Prefer left.
+                ("a", "b", "c", "d", "e"),
+                ("a", "b", "c", "d", "e", "f"),
+            ),
+        }
+        dataset = (
+            empty,
+            noleft1, noleft2, noleft3,
+            noright1, noright2, noright3,
+            leftandright1, leftandright2,
+        )
+        for params in dataset:
+            with self.subTest(**params):
+                left, required, right, expected = params.values()
+                permutations = clinic.permute_optional_groups(left, required, right)
+                actual = tuple(permutations)
+                self.assertEqual(actual, expected)
+
+
+class FormatHelperTests(unittest.TestCase):
+
+    def test_strip_leading_and_trailing_blank_lines(self):
+        dataset = (
+            # Input lines, expected output.
+            ("a\nb",            "a\nb"),
+            ("a\nb\n",          "a\nb"),
+            ("a\nb ",           "a\nb"),
+            ("\na\nb\n\n",      "a\nb"),
+            ("\n\na\nb\n\n",    "a\nb"),
+            ("\n\na\n\nb\n\n",  "a\n\nb"),
+            # Note, leading whitespace is preserved:
+            (" a\nb",               " a\nb"),
+            (" a\nb ",              " a\nb"),
+            (" \n \n a\nb \n \n ",  " a\nb"),
+        )
+        for lines, expected in dataset:
+            with self.subTest(lines=lines, expected=expected):
+                out = clinic.strip_leading_and_trailing_blank_lines(lines)
+                self.assertEqual(out, expected)
+
+    def test_normalize_snippet(self):
+        snippet = """
+            one
+            two
+            three
+        """
+
+        # Expected outputs:
+        zero_indent = (
+            "one\n"
+            "two\n"
+            "three"
+        )
+        four_indent = (
+            "    one\n"
+            "    two\n"
+            "    three"
+        )
+        eight_indent = (
+            "        one\n"
+            "        two\n"
+            "        three"
+        )
+        expected_outputs = {0: zero_indent, 4: four_indent, 8: eight_indent}
+        for indent, expected in expected_outputs.items():
+            with self.subTest(indent=indent):
+                actual = clinic.normalize_snippet(snippet, indent=indent)
+                self.assertEqual(actual, expected)
+
+    def test_accumulator(self):
+        acc = clinic.text_accumulator()
+        self.assertEqual(acc.output(), "")
+        acc.append("a")
+        self.assertEqual(acc.output(), "a")
+        self.assertEqual(acc.output(), "")
+        acc.append("b")
+        self.assertEqual(acc.output(), "b")
+        self.assertEqual(acc.output(), "")
+        acc.append("c")
+        acc.append("d")
+        self.assertEqual(acc.output(), "cd")
+        self.assertEqual(acc.output(), "")
+
+    def test_quoted_for_c_string(self):
+        dataset = (
+            # input,    expected
+            (r"abc",    r"abc"),
+            (r"\abc",   r"\\abc"),
+            (r"\a\bc",  r"\\a\\bc"),
+            (r"\a\\bc", r"\\a\\\\bc"),
+            (r'"abc"',  r'\"abc\"'),
+            (r"'a'",    r"\'a\'"),
+        )
+        for line, expected in dataset:
+            with self.subTest(line=line, expected=expected):
+                out = clinic.quoted_for_c_string(line)
+                self.assertEqual(out, expected)
+
+    def test_rstrip_lines(self):
+        lines = (
+            "a \n"
+            "b\n"
+            " c\n"
+            " d \n"
+        )
+        expected = (
+            "a\n"
+            "b\n"
+            " c\n"
+            " d\n"
+        )
+        out = clinic.rstrip_lines(lines)
+        self.assertEqual(out, expected)
+
+    def test_format_escape(self):
+        line = "{}, {a}"
+        expected = "{{}}, {{a}}"
+        out = clinic.format_escape(line)
+        self.assertEqual(out, expected)
+
+    def test_indent_all_lines(self):
+        # Blank lines are expected to be unchanged.
+        self.assertEqual(clinic.indent_all_lines("", prefix="bar"), "")
+
+        lines = (
+            "one\n"
+            "two"  # The missing newline is deliberate.
+        )
+        expected = (
+            "barone\n"
+            "bartwo"
+        )
+        out = clinic.indent_all_lines(lines, prefix="bar")
+        self.assertEqual(out, expected)
+
+        # If last line is empty, expect it to be unchanged.
+        lines = (
+            "\n"
+            "one\n"
+            "two\n"
+            ""
+        )
+        expected = (
+            "bar\n"
+            "barone\n"
+            "bartwo\n"
+            ""
+        )
+        out = clinic.indent_all_lines(lines, prefix="bar")
+        self.assertEqual(out, expected)
+
+    def test_suffix_all_lines(self):
+        # Blank lines are expected to be unchanged.
+        self.assertEqual(clinic.suffix_all_lines("", suffix="foo"), "")
+
+        lines = (
+            "one\n"
+            "two"  # The missing newline is deliberate.
+        )
+        expected = (
+            "onefoo\n"
+            "twofoo"
+        )
+        out = clinic.suffix_all_lines(lines, suffix="foo")
+        self.assertEqual(out, expected)
+
+        # If last line is empty, expect it to be unchanged.
+        lines = (
+            "\n"
+            "one\n"
+            "two\n"
+            ""
+        )
+        expected = (
+            "foo\n"
+            "onefoo\n"
+            "twofoo\n"
+            ""
+        )
+        out = clinic.suffix_all_lines(lines, suffix="foo")
+        self.assertEqual(out, expected)
+
+
+class ClinicReprTests(unittest.TestCase):
+    def test_Block_repr(self):
+        block = clinic.Block("foo")
+        expected_repr = "<clinic.Block 'text' input='foo' output=None>"
+        self.assertEqual(repr(block), expected_repr)
+
+        block2 = clinic.Block("bar", "baz", [], "eggs", "spam")
+        expected_repr_2 = "<clinic.Block 'baz' input='bar' output='eggs'>"
+        self.assertEqual(repr(block2), expected_repr_2)
+
+        block3 = clinic.Block(
+            input="longboi_" * 100,
+            dsl_name="wow_so_long",
+            signatures=[],
+            output="very_long_" * 100,
+            indent=""
+        )
+        expected_repr_3 = (
+            "<clinic.Block 'wow_so_long' input='longboi_longboi_longboi_l...' output='very_long_very_long_very_...'>"
+        )
+        self.assertEqual(repr(block3), expected_repr_3)
+
+    def test_Destination_repr(self):
+        c = _make_clinic()
+
+        destination = clinic.Destination(
+            "foo", type="file", clinic=c, args=("eggs",)
+        )
+        self.assertEqual(
+            repr(destination), "<clinic.Destination 'foo' type='file' file='eggs'>"
+        )
+
+        destination2 = clinic.Destination("bar", type="buffer", clinic=c)
+        self.assertEqual(repr(destination2), "<clinic.Destination 'bar' type='buffer'>")
+
+    def test_Module_repr(self):
+        module = clinic.Module("foo", _make_clinic())
+        self.assertRegex(repr(module), r"<clinic.Module 'foo' at \d+>")
+
+    def test_Class_repr(self):
+        cls = clinic.Class("foo", _make_clinic(), None, 'some_typedef', 'some_type_object')
+        self.assertRegex(repr(cls), r"<clinic.Class 'foo' at \d+>")
+
+    def test_FunctionKind_repr(self):
+        self.assertEqual(
+            repr(clinic.FunctionKind.INVALID), "<clinic.FunctionKind.INVALID>"
+        )
+        self.assertEqual(
+            repr(clinic.FunctionKind.CLASS_METHOD), "<clinic.FunctionKind.CLASS_METHOD>"
+        )
+
+    def test_Function_and_Parameter_reprs(self):
+        function = clinic.Function(
+            name='foo',
+            module=_make_clinic(),
+            cls=None,
+            c_basename=None,
+            full_name='foofoo',
+            return_converter=clinic.init_return_converter(),
+            kind=clinic.FunctionKind.METHOD_INIT,
+            coexist=False
+        )
+        self.assertEqual(repr(function), "<clinic.Function 'foo'>")
+
+        converter = clinic.self_converter('bar', 'bar', function)
+        parameter = clinic.Parameter(
+            "bar",
+            kind=inspect.Parameter.POSITIONAL_OR_KEYWORD,
+            function=function,
+            converter=converter
+        )
+        self.assertEqual(repr(parameter), "<clinic.Parameter 'bar'>")
+
+    def test_Monitor_repr(self):
+        monitor = clinic.cpp.Monitor()
+        self.assertRegex(repr(monitor), r"<clinic.Monitor \d+ line=0 condition=''>")
+
+        monitor.line_number = 42
+        monitor.stack.append(("token1", "condition1"))
+        self.assertRegex(
+            repr(monitor), r"<clinic.Monitor \d+ line=42 condition='condition1'>"
+        )
+
+        monitor.stack.append(("token2", "condition2"))
+        self.assertRegex(
+            repr(monitor),
+            r"<clinic.Monitor \d+ line=42 condition='condition1 && condition2'>"
+        )
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_cmd.py b/Lib/test/test_cmd.py
index 319801c71f776b..46ec82b704963d 100644
--- a/Lib/test/test_cmd.py
+++ b/Lib/test/test_cmd.py
@@ -9,7 +9,10 @@
 import doctest
 import unittest
 import io
+import textwrap
 from test import support
+from test.support.import_helper import import_module
+from test.support.pty_helper import run_pty
 
 class samplecmdclass(cmd.Cmd):
     """
@@ -244,23 +247,55 @@ def test_input_reset_at_EOF(self):
              "(Cmd) *** Unknown syntax: EOF\n"))
 
 
+class CmdPrintExceptionClass(cmd.Cmd):
+    """
+    GH-80731
+    cmd.Cmd should print the correct exception in default()
+    >>> mycmd = CmdPrintExceptionClass()
+    >>> try:
+    ...     raise ValueError("test")
+    ... except ValueError:
+    ...     mycmd.onecmd("not important")
+    (<class 'ValueError'>, ValueError('test'))
+    """
+
+    def default(self, line):
+        print(sys.exc_info()[:2])
+
+
+@support.requires_subprocess()
+class CmdTestReadline(unittest.TestCase):
+    def setUpClass():
+        # Ensure that the readline module is loaded
+        # If this fails, the test is skipped because SkipTest will be raised
+        readline = import_module('readline')
+
+    def test_basic_completion(self):
+        script = textwrap.dedent("""
+            import cmd
+            class simplecmd(cmd.Cmd):
+                def do_tab_completion_test(self, args):
+                    print('tab completion success')
+                    return True
+
+            simplecmd().cmdloop()
+        """)
+
+        # 't' and complete 'ab_completion_test' to 'tab_completion_test'
+        input = b"t\t\n"
+
+        output = run_pty(script, input)
+
+        self.assertIn(b'ab_completion_test', output)
+        self.assertIn(b'tab completion success', output)
+
 def load_tests(loader, tests, pattern):
     tests.addTest(doctest.DocTestSuite())
     return tests
 
-def test_coverage(coverdir):
-    trace = support.import_module('trace')
-    tracer=trace.Trace(ignoredirs=[sys.base_prefix, sys.base_exec_prefix,],
-                        trace=0, count=1)
-    tracer.run('import importlib; importlib.reload(cmd); test_main()')
-    r=tracer.results()
-    print("Writing coverage results...")
-    r.write_results(show_missing=True, summary=True, coverdir=coverdir)
 
 if __name__ == "__main__":
-    if "-c" in sys.argv:
-        test_coverage('/tmp/cmd.cover')
-    elif "-i" in sys.argv:
+    if "-i" in sys.argv:
         samplecmdclass().cmdloop()
     else:
         unittest.main()
diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index 94298003063593..7a27952c345b9c 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -153,6 +153,17 @@ def test_xoption_frozen_modules(self):
                 res = assert_python_ok(*cmd)
                 self.assertRegex(res.out.decode('utf-8'), expected)
 
+    def test_env_var_frozen_modules(self):
+        tests = {
+            ('on', 'FrozenImporter'),
+            ('off', 'SourceFileLoader'),
+        }
+        for raw, expected in tests:
+            cmd = ['-c', 'import os; print(os.__spec__.loader, end="")']
+            with self.subTest(raw):
+                res = assert_python_ok(*cmd, PYTHON_FROZEN_MODULES=raw)
+                self.assertRegex(res.out.decode('utf-8'), expected)
+
     def test_run_module(self):
         # Test expected operation of the '-m' switch
         # Switch needs an argument
@@ -468,8 +479,9 @@ def test_stdout_flush_at_shutdown(self):
         rc, out, err = assert_python_failure('-c', code)
         self.assertEqual(b'', out)
         self.assertEqual(120, rc)
-        self.assertRegex(err.decode('ascii', 'ignore'),
-                         'Exception ignored in.*\nOSError: .*')
+        self.assertIn(b'Exception ignored on flushing sys.stdout:\n'
+                      b'OSError: '.replace(b'\n', os.linesep.encode()),
+                      err)
 
     def test_closed_stdout(self):
         # Issue #13444: if stdout has been explicitly closed, we should
@@ -717,11 +729,11 @@ def test_xdev(self):
 
         # Memory allocator debug hooks
         try:
-            import _testcapi
+            import _testinternalcapi
         except ImportError:
             pass
         else:
-            code = "import _testcapi; print(_testcapi.pymem_getallocatorsname())"
+            code = "import _testinternalcapi; print(_testinternalcapi.pymem_getallocatorsname())"
             with support.SuppressCrashReport():
                 out = self.run_xdev("-c", code, check_exitcode=False)
             if support.with_pymalloc():
@@ -783,7 +795,7 @@ def test_warnings_filter_precedence(self):
         self.assertEqual(out, expected_filters)
 
     def check_pythonmalloc(self, env_var, name):
-        code = 'import _testcapi; print(_testcapi.pymem_getallocatorsname())'
+        code = 'import _testinternalcapi; print(_testinternalcapi.pymem_getallocatorsname())'
         env = dict(os.environ)
         env.pop('PYTHONDEVMODE', None)
         if env_var is not None:
@@ -799,9 +811,11 @@ def check_pythonmalloc(self, env_var, name):
         self.assertEqual(proc.stdout.rstrip(), name)
         self.assertEqual(proc.returncode, 0)
 
+    @support.cpython_only
     def test_pythonmalloc(self):
         # Test the PYTHONMALLOC environment variable
         pymalloc = support.with_pymalloc()
+        mimalloc = support.with_mimalloc()
         if pymalloc:
             default_name = 'pymalloc_debug' if support.Py_DEBUG else 'pymalloc'
             default_name_debug = 'pymalloc_debug'
@@ -820,6 +834,11 @@ def test_pythonmalloc(self):
                 ('pymalloc', 'pymalloc'),
                 ('pymalloc_debug', 'pymalloc_debug'),
             ))
+        if mimalloc:
+            tests.extend((
+                ('mimalloc', 'mimalloc'),
+                ('mimalloc_debug', 'mimalloc_debug'),
+            ))
 
         for env_var, name in tests:
             with self.subTest(env_var=env_var, name=name):
@@ -877,11 +896,8 @@ def test_int_max_str_digits(self):
         assert_python_failure('-c', code, PYTHONINTMAXSTRDIGITS='foo')
         assert_python_failure('-c', code, PYTHONINTMAXSTRDIGITS='100')
 
-        def res2int(res):
-            out = res.out.strip().decode("utf-8")
-            return tuple(int(i) for i in out.split())
-
         res = assert_python_ok('-c', code)
+        res2int = self.res2int
         current_max = sys.get_int_max_str_digits()
         self.assertEqual(res2int(res), (current_max, current_max))
         res = assert_python_ok('-X', 'int_max_str_digits=0', '-c', code)
@@ -901,6 +917,26 @@ def res2int(res):
         )
         self.assertEqual(res2int(res), (6000, 6000))
 
+    def test_cpu_count(self):
+        code = "import os; print(os.cpu_count(), os.process_cpu_count())"
+        res = assert_python_ok('-X', 'cpu_count=4321', '-c', code)
+        self.assertEqual(self.res2int(res), (4321, 4321))
+        res = assert_python_ok('-c', code, PYTHON_CPU_COUNT='1234')
+        self.assertEqual(self.res2int(res), (1234, 1234))
+
+    def test_cpu_count_default(self):
+        code = "import os; print(os.cpu_count(), os.process_cpu_count())"
+        res = assert_python_ok('-X', 'cpu_count=default', '-c', code)
+        self.assertEqual(self.res2int(res), (os.cpu_count(), os.process_cpu_count()))
+        res = assert_python_ok('-X', 'cpu_count=default', '-c', code, PYTHON_CPU_COUNT='1234')
+        self.assertEqual(self.res2int(res), (os.cpu_count(), os.process_cpu_count()))
+        es = assert_python_ok('-c', code, PYTHON_CPU_COUNT='default')
+        self.assertEqual(self.res2int(res), (os.cpu_count(), os.process_cpu_count()))
+
+    def res2int(self, res):
+        out = res.out.strip().decode("utf-8")
+        return tuple(int(i) for i in out.split())
+
 
 @unittest.skipIf(interpreter_requires_environment(),
                  'Cannot run -I tests when PYTHON env vars are required.')
diff --git a/Lib/test/test_cmd_line_script.py b/Lib/test/test_cmd_line_script.py
index 8bf299382e9ca4..48754d5a63da3b 100644
--- a/Lib/test/test_cmd_line_script.py
+++ b/Lib/test/test_cmd_line_script.py
@@ -203,6 +203,8 @@ def check_repl_stderr_flush(self, separate_stderr=False):
             stderr = p.stderr if separate_stderr else p.stdout
             self.assertIn(b'Traceback ', stderr.readline())
             self.assertIn(b'File "<stdin>"', stderr.readline())
+            self.assertIn(b'1/0', stderr.readline())
+            self.assertIn(b'    ~^~', stderr.readline())
             self.assertIn(b'ZeroDivisionError', stderr.readline())
 
     def test_repl_stdout_flush(self):
@@ -682,6 +684,27 @@ def test_syntaxerror_null_bytes_in_multiline_string(self):
                     ]
                 )
 
+    def test_source_lines_are_shown_when_running_source(self):
+        _, _, stderr = assert_python_failure("-c", "1/0")
+        expected_lines = [
+            b'Traceback (most recent call last):',
+            b'  File "<string>", line 1, in <module>',
+            b'    1/0',
+            b'    ~^~',
+            b'ZeroDivisionError: division by zero']
+        self.assertEqual(stderr.splitlines(), expected_lines)
+
+    def test_syntaxerror_does_not_crash(self):
+        script = "nonlocal x\n"
+        with os_helper.temp_dir() as script_dir:
+            script_name = _make_test_script(script_dir, 'script', script)
+            exitcode, stdout, stderr = assert_python_failure(script_name)
+            text = io.TextIOWrapper(io.BytesIO(stderr), 'ascii').read()
+            # It used to crash in https://github.com/python/cpython/issues/111132
+            self.assertTrue(text.endswith(
+                'SyntaxError: nonlocal declaration not allowed at module level\n',
+            ), text)
+
     def test_consistent_sys_path_for_direct_execution(self):
         # This test case ensures that the following all give the same
         # sys.path configuration:
@@ -777,7 +800,7 @@ def test_script_as_dev_fd(self):
         with os_helper.temp_dir() as work_dir:
             script_name = _make_test_script(work_dir, 'script.py', script)
             with open(script_name, "r") as fp:
-                p = spawn_python(f"/dev/fd/{fp.fileno()}", close_fds=False, pass_fds=(0,1,2,fp.fileno()))
+                p = spawn_python(f"/dev/fd/{fp.fileno()}", close_fds=True, pass_fds=(0,1,2,fp.fileno()))
                 out, err = p.communicate()
                 self.assertEqual(out, b"12345678912345678912345\n")
 
diff --git a/Lib/test/test_code.py b/Lib/test/test_code.py
index ca06a39f5df142..a961ddbe17a3d3 100644
--- a/Lib/test/test_code.py
+++ b/Lib/test/test_code.py
@@ -125,6 +125,7 @@
 
 """
 
+import copy
 import inspect
 import sys
 import threading
@@ -264,7 +265,7 @@ def func2():
             ("co_posonlyargcount", 0),
             ("co_kwonlyargcount", 0),
             ("co_nlocals", 1),
-            ("co_stacksize", 0),
+            ("co_stacksize", 1),
             ("co_flags", code.co_flags | inspect.CO_COROUTINE),
             ("co_firstlineno", 100),
             ("co_code", code2.co_code),
@@ -280,11 +281,17 @@ def func2():
             with self.subTest(attr=attr, value=value):
                 new_code = code.replace(**{attr: value})
                 self.assertEqual(getattr(new_code, attr), value)
+                new_code = copy.replace(code, **{attr: value})
+                self.assertEqual(getattr(new_code, attr), value)
 
         new_code = code.replace(co_varnames=code2.co_varnames,
                                 co_nlocals=code2.co_nlocals)
         self.assertEqual(new_code.co_varnames, code2.co_varnames)
         self.assertEqual(new_code.co_nlocals, code2.co_nlocals)
+        new_code = copy.replace(code, co_varnames=code2.co_varnames,
+                                co_nlocals=code2.co_nlocals)
+        self.assertEqual(new_code.co_varnames, code2.co_varnames)
+        self.assertEqual(new_code.co_nlocals, code2.co_nlocals)
 
     def test_nlocals_mismatch(self):
         def func():
@@ -498,6 +505,25 @@ def test_code_hash_uses_bytecode(self):
         self.assertNotEqual(c, c1)
         self.assertNotEqual(hash(c), hash(c1))
 
+    @cpython_only
+    def test_code_equal_with_instrumentation(self):
+        """ GH-109052
+
+        Make sure the instrumentation doesn't affect the code equality
+        The validity of this test relies on the fact that "x is x" and
+        "x in x" have only one different instruction and the instructions
+        have the same argument.
+
+        """
+        code1 = compile("x is x", "example.py", "eval")
+        code2 = compile("x in x", "example.py", "eval")
+        sys._getframe().f_trace_opcodes = True
+        sys.settrace(lambda *args: None)
+        exec(code1, {'x': []})
+        exec(code2, {'x': []})
+        self.assertNotEqual(code1, code2)
+        sys.settrace(None)
+
 
 def isinterned(s):
     return s is sys.intern(('_' + s + '_')[1:-1])
diff --git a/Lib/test/test_code_module.py b/Lib/test/test_code_module.py
index 226bc3a853b7b9..747c0f9683c19c 100644
--- a/Lib/test/test_code_module.py
+++ b/Lib/test/test_code_module.py
@@ -10,11 +10,7 @@
 code = import_helper.import_module('code')
 
 
-class TestInteractiveConsole(unittest.TestCase):
-
-    def setUp(self):
-        self.console = code.InteractiveConsole()
-        self.mock_sys()
+class MockSys:
 
     def mock_sys(self):
         "Mock system environment for InteractiveConsole"
@@ -32,6 +28,13 @@ def mock_sys(self):
         del self.sysmod.ps1
         del self.sysmod.ps2
 
+
+class TestInteractiveConsole(unittest.TestCase, MockSys):
+
+    def setUp(self):
+        self.console = code.InteractiveConsole()
+        self.mock_sys()
+
     def test_ps1(self):
         self.infunc.side_effect = EOFError('Finished')
         self.console.interact()
@@ -151,5 +154,21 @@ def test_context_tb(self):
         self.assertIn(expected, output)
 
 
+class TestInteractiveConsoleLocalExit(unittest.TestCase, MockSys):
+
+    def setUp(self):
+        self.console = code.InteractiveConsole(local_exit=True)
+        self.mock_sys()
+
+    def test_exit(self):
+        # default exit message
+        self.infunc.side_effect = ["exit()"]
+        self.console.interact(banner='')
+        self.assertEqual(len(self.stderr.method_calls), 2)
+        err_msg = self.stderr.method_calls[1]
+        expected = 'now exiting InteractiveConsole...\n'
+        self.assertEqual(err_msg, ['write', (expected,), {}])
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_codecencodings_iso2022.py b/Lib/test/test_codecencodings_iso2022.py
index 00ea1c39dd6fb6..027dbecc6134df 100644
--- a/Lib/test/test_codecencodings_iso2022.py
+++ b/Lib/test/test_codecencodings_iso2022.py
@@ -24,6 +24,52 @@ class Test_ISO2022_JP2(multibytecodec_support.TestBase, unittest.TestCase):
         (b'ab\x1BNdef', 'replace', 'abdef'),
     )
 
+class Test_ISO2022_JP3(multibytecodec_support.TestBase, unittest.TestCase):
+    encoding = 'iso2022_jp_3'
+    tstring = multibytecodec_support.load_teststring('iso2022_jp')
+    codectests = COMMON_CODEC_TESTS + (
+        (b'ab\x1BNdef', 'replace', 'ab\x1BNdef'),
+        (b'\x1B$(O\x2E\x23\x1B(B', 'strict', '\u3402'      ),
+        (b'\x1B$(O\x2E\x22\x1B(B', 'strict', '\U0002000B'  ),
+        (b'\x1B$(O\x24\x77\x1B(B', 'strict', '\u304B\u309A'),
+        (b'\x1B$(P\x21\x22\x1B(B', 'strict', '\u4E02'      ),
+        (b'\x1B$(P\x7E\x76\x1B(B', 'strict', '\U0002A6B2'  ),
+        ('\u3402',       'strict', b'\x1B$(O\x2E\x23\x1B(B'),
+        ('\U0002000B',   'strict', b'\x1B$(O\x2E\x22\x1B(B'),
+        ('\u304B\u309A', 'strict', b'\x1B$(O\x24\x77\x1B(B'),
+        ('\u4E02',       'strict', b'\x1B$(P\x21\x22\x1B(B'),
+        ('\U0002A6B2',   'strict', b'\x1B$(P\x7E\x76\x1B(B'),
+        (b'ab\x1B$(O\x2E\x21\x1B(Bdef', 'replace', 'ab\uFFFDdef'),
+        ('ab\u4FF1def', 'replace', b'ab?def'),
+    )
+    xmlcharnametest = (
+        '\xAB\u211C\xBB = \u2329\u1234\u232A',
+        b'\x1B$(O\x29\x28\x1B(B&real;\x1B$(O\x29\x32\x1B(B = &lang;&#4660;&rang;'
+    )
+
+class Test_ISO2022_JP2004(multibytecodec_support.TestBase, unittest.TestCase):
+    encoding = 'iso2022_jp_2004'
+    tstring = multibytecodec_support.load_teststring('iso2022_jp')
+    codectests = COMMON_CODEC_TESTS + (
+        (b'ab\x1BNdef', 'replace', 'ab\x1BNdef'),
+        (b'\x1B$(Q\x2E\x23\x1B(B', 'strict', '\u3402'      ),
+        (b'\x1B$(Q\x2E\x22\x1B(B', 'strict', '\U0002000B'  ),
+        (b'\x1B$(Q\x24\x77\x1B(B', 'strict', '\u304B\u309A'),
+        (b'\x1B$(P\x21\x22\x1B(B', 'strict', '\u4E02'      ),
+        (b'\x1B$(P\x7E\x76\x1B(B', 'strict', '\U0002A6B2'  ),
+        ('\u3402',       'strict', b'\x1B$(Q\x2E\x23\x1B(B'),
+        ('\U0002000B',   'strict', b'\x1B$(Q\x2E\x22\x1B(B'),
+        ('\u304B\u309A', 'strict', b'\x1B$(Q\x24\x77\x1B(B'),
+        ('\u4E02',       'strict', b'\x1B$(P\x21\x22\x1B(B'),
+        ('\U0002A6B2',   'strict', b'\x1B$(P\x7E\x76\x1B(B'),
+        (b'ab\x1B$(Q\x2E\x21\x1B(Bdef', 'replace', 'ab\u4FF1def'),
+        ('ab\u4FF1def', 'replace', b'ab\x1B$(Q\x2E\x21\x1B(Bdef'),
+    )
+    xmlcharnametest = (
+        '\xAB\u211C\xBB = \u2329\u1234\u232A',
+        b'\x1B$(Q\x29\x28\x1B(B&real;\x1B$(Q\x29\x32\x1B(B = &lang;&#4660;&rang;'
+    )
+
 class Test_ISO2022_KR(multibytecodec_support.TestBase, unittest.TestCase):
     encoding = 'iso2022_kr'
     tstring = multibytecodec_support.load_teststring('iso2022_kr')
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index 376175f90f63eb..ff511a625a0194 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -1,7 +1,9 @@
 import codecs
 import contextlib
+import copy
 import io
 import locale
+import pickle
 import sys
 import unittest
 import encodings
@@ -1760,6 +1762,76 @@ def test_file_closes_if_lookup_error_raised(self):
 
             file().close.assert_called()
 
+    def test_copy(self):
+        orig = codecs.lookup('utf-8')
+        dup = copy.copy(orig)
+        self.assertIsNot(dup, orig)
+        self.assertEqual(dup, orig)
+        self.assertTrue(orig._is_text_encoding)
+        self.assertEqual(dup.encode, orig.encode)
+        self.assertEqual(dup.name, orig.name)
+        self.assertEqual(dup.incrementalencoder, orig.incrementalencoder)
+
+        # Test a CodecInfo with _is_text_encoding equal to false.
+        orig = codecs.lookup("base64")
+        dup = copy.copy(orig)
+        self.assertIsNot(dup, orig)
+        self.assertEqual(dup, orig)
+        self.assertFalse(orig._is_text_encoding)
+        self.assertEqual(dup.encode, orig.encode)
+        self.assertEqual(dup.name, orig.name)
+        self.assertEqual(dup.incrementalencoder, orig.incrementalencoder)
+
+    def test_deepcopy(self):
+        orig = codecs.lookup('utf-8')
+        dup = copy.deepcopy(orig)
+        self.assertIsNot(dup, orig)
+        self.assertEqual(dup, orig)
+        self.assertTrue(orig._is_text_encoding)
+        self.assertEqual(dup.encode, orig.encode)
+        self.assertEqual(dup.name, orig.name)
+        self.assertEqual(dup.incrementalencoder, orig.incrementalencoder)
+
+        # Test a CodecInfo with _is_text_encoding equal to false.
+        orig = codecs.lookup("base64")
+        dup = copy.deepcopy(orig)
+        self.assertIsNot(dup, orig)
+        self.assertEqual(dup, orig)
+        self.assertFalse(orig._is_text_encoding)
+        self.assertEqual(dup.encode, orig.encode)
+        self.assertEqual(dup.name, orig.name)
+        self.assertEqual(dup.incrementalencoder, orig.incrementalencoder)
+
+    def test_pickle(self):
+        codec_info = codecs.lookup('utf-8')
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(protocol=proto):
+                pickled_codec_info = pickle.dumps(codec_info)
+                unpickled_codec_info = pickle.loads(pickled_codec_info)
+                self.assertIsNot(codec_info, unpickled_codec_info)
+                self.assertEqual(codec_info, unpickled_codec_info)
+                self.assertEqual(codec_info.name, unpickled_codec_info.name)
+                self.assertEqual(
+                     codec_info.incrementalencoder,
+                     unpickled_codec_info.incrementalencoder
+                )
+                self.assertTrue(unpickled_codec_info._is_text_encoding)
+
+        # Test a CodecInfo with _is_text_encoding equal to false.
+        codec_info = codecs.lookup('base64')
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(protocol=proto):
+                pickled_codec_info = pickle.dumps(codec_info)
+                unpickled_codec_info = pickle.loads(pickled_codec_info)
+                self.assertIsNot(codec_info, unpickled_codec_info)
+                self.assertEqual(codec_info, unpickled_codec_info)
+                self.assertEqual(codec_info.name, unpickled_codec_info.name)
+                self.assertEqual(
+                     codec_info.incrementalencoder,
+                     unpickled_codec_info.incrementalencoder
+                )
+                self.assertFalse(unpickled_codec_info._is_text_encoding)
+
 
 class StreamReaderTest(unittest.TestCase):
 
@@ -1771,6 +1843,61 @@ def test_readlines(self):
         f = self.reader(self.stream)
         self.assertEqual(f.readlines(), ['\ud55c\n', '\uae00'])
 
+    def test_copy(self):
+        f = self.reader(Queue(b'\xed\x95\x9c\n\xea\xb8\x80'))
+        with self.assertRaisesRegex(TypeError, 'StreamReader'):
+            copy.copy(f)
+        with self.assertRaisesRegex(TypeError, 'StreamReader'):
+            copy.deepcopy(f)
+
+    def test_pickle(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(protocol=proto):
+                f = self.reader(Queue(b'\xed\x95\x9c\n\xea\xb8\x80'))
+                with self.assertRaisesRegex(TypeError, 'StreamReader'):
+                    pickle.dumps(f, proto)
+
+
+class StreamWriterTest(unittest.TestCase):
+
+    def setUp(self):
+        self.writer = codecs.getwriter('utf-8')
+
+    def test_copy(self):
+        f = self.writer(Queue(b''))
+        with self.assertRaisesRegex(TypeError, 'StreamWriter'):
+            copy.copy(f)
+        with self.assertRaisesRegex(TypeError, 'StreamWriter'):
+            copy.deepcopy(f)
+
+    def test_pickle(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(protocol=proto):
+                f = self.writer(Queue(b''))
+                with self.assertRaisesRegex(TypeError, 'StreamWriter'):
+                    pickle.dumps(f, proto)
+
+
+class StreamReaderWriterTest(unittest.TestCase):
+
+    def setUp(self):
+        self.reader = codecs.getreader('latin1')
+        self.writer = codecs.getwriter('utf-8')
+
+    def test_copy(self):
+        f = codecs.StreamReaderWriter(Queue(b''), self.reader, self.writer)
+        with self.assertRaisesRegex(TypeError, 'StreamReaderWriter'):
+            copy.copy(f)
+        with self.assertRaisesRegex(TypeError, 'StreamReaderWriter'):
+            copy.deepcopy(f)
+
+    def test_pickle(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(protocol=proto):
+                f = codecs.StreamReaderWriter(Queue(b''), self.reader, self.writer)
+                with self.assertRaisesRegex(TypeError, 'StreamReaderWriter'):
+                    pickle.dumps(f, proto)
+
 
 class EncodedFileTest(unittest.TestCase):
 
@@ -2822,14 +2949,15 @@ def test_binary_to_text_denylists_text_transforms(self):
     def test_custom_zlib_error_is_noted(self):
         # Check zlib codec gives a good error for malformed input
         msg = "decoding with 'zlib_codec' codec failed"
-        with self.assertRaises(Exception) as failure:
+        with self.assertRaises(zlib.error) as failure:
             codecs.decode(b"hello", "zlib_codec")
         self.assertEqual(msg, failure.exception.__notes__[0])
 
     def test_custom_hex_error_is_noted(self):
         # Check hex codec gives a good error for malformed input
+        import binascii
         msg = "decoding with 'hex_codec' codec failed"
-        with self.assertRaises(Exception) as failure:
+        with self.assertRaises(binascii.Error) as failure:
             codecs.decode(b"hello", "hex_codec")
         self.assertEqual(msg, failure.exception.__notes__[0])
 
@@ -3345,6 +3473,28 @@ def test_seeking_write(self):
         self.assertEqual(sr.readline(), b'abc\n')
         self.assertEqual(sr.readline(), b'789\n')
 
+    def test_copy(self):
+        bio = io.BytesIO()
+        codec = codecs.lookup('ascii')
+        sr = codecs.StreamRecoder(bio, codec.encode, codec.decode,
+                                  encodings.ascii.StreamReader, encodings.ascii.StreamWriter)
+
+        with self.assertRaisesRegex(TypeError, 'StreamRecoder'):
+            copy.copy(sr)
+        with self.assertRaisesRegex(TypeError, 'StreamRecoder'):
+            copy.deepcopy(sr)
+
+    def test_pickle(self):
+        q = Queue(b'')
+        codec = codecs.lookup('ascii')
+        sr = codecs.StreamRecoder(q, codec.encode, codec.decode,
+                                  encodings.ascii.StreamReader, encodings.ascii.StreamWriter)
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(protocol=proto):
+                with self.assertRaisesRegex(TypeError, 'StreamRecoder'):
+                    pickle.dumps(sr, proto)
+
 
 @unittest.skipIf(_testinternalcapi is None, 'need _testinternalcapi module')
 class LocaleCodecTest(unittest.TestCase):
@@ -3487,9 +3637,10 @@ class Rot13UtilTest(unittest.TestCase):
     $ echo "Hello World" | python -m encodings.rot_13
     """
     def test_rot13_func(self):
+        from encodings.rot_13 import rot13
         infile = io.StringIO('Gb or, be abg gb or, gung vf gur dhrfgvba')
         outfile = io.StringIO()
-        encodings.rot_13.rot13(infile, outfile)
+        rot13(infile, outfile)
         outfile.seek(0)
         plain_text = outfile.read()
         self.assertEqual(
diff --git a/Lib/test/test_codeop.py b/Lib/test/test_codeop.py
index e3c382266fa058..2abb6c6d935b7e 100644
--- a/Lib/test/test_codeop.py
+++ b/Lib/test/test_codeop.py
@@ -5,6 +5,7 @@
 import unittest
 import warnings
 from test.support import warnings_helper
+from textwrap import dedent
 
 from codeop import compile_command, PyCF_DONT_IMPLY_DEDENT
 
@@ -308,6 +309,19 @@ def test_invalid_warning(self):
         self.assertRegex(str(w[0].message), 'invalid escape sequence')
         self.assertEqual(w[0].filename, '<input>')
 
+    def assertSyntaxErrorMatches(self, code, message):
+        with self.subTest(code):
+            with self.assertRaisesRegex(SyntaxError, message):
+                compile_command(code, symbol='exec')
+
+    def test_syntax_errors(self):
+        self.assertSyntaxErrorMatches(
+            dedent("""\
+                def foo(x,x):
+                   pass
+            """), "duplicate argument 'x' in function definition")
+
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index bb8b352518ef3e..7e6f811e17cfa2 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -488,12 +488,8 @@ def test_instance(self):
         self.assertEqual(p._replace(x=1), (1, 22))      # test _replace method
         self.assertEqual(p._asdict(), dict(x=11, y=22)) # test _asdict method
 
-        try:
+        with self.assertRaises(TypeError):
             p._replace(x=1, error=2)
-        except ValueError:
-            pass
-        else:
-            self._fail('Did not detect an incorrect fieldname')
 
         # verify that field string can have commas
         Point = namedtuple('Point', 'x, y')
diff --git a/Lib/test/test_colorsys.py b/Lib/test/test_colorsys.py
index a24e3adcb4b842..74d76294b0b4d4 100644
--- a/Lib/test/test_colorsys.py
+++ b/Lib/test/test_colorsys.py
@@ -69,6 +69,16 @@ def test_hls_values(self):
             self.assertTripleEqual(hls, colorsys.rgb_to_hls(*rgb))
             self.assertTripleEqual(rgb, colorsys.hls_to_rgb(*hls))
 
+    def test_hls_nearwhite(self):  # gh-106498
+        values = (
+            # rgb, hls: these do not work in reverse
+            ((0.9999999999999999, 1, 1), (0.5, 1.0, 1.0)),
+            ((1, 0.9999999999999999, 0.9999999999999999), (0.0, 1.0, 1.0)),
+        )
+        for rgb, hls in values:
+            self.assertTripleEqual(hls, colorsys.rgb_to_hls(*rgb))
+            self.assertTripleEqual((1.0, 1.0, 1.0), colorsys.hls_to_rgb(*hls))
+
     def test_yiq_roundtrip(self):
         for r in frange(0.0, 1.0, 0.2):
             for g in frange(0.0, 1.0, 0.2):
diff --git a/Lib/test/test_compare.py b/Lib/test/test_compare.py
index 2b3faed7965bc1..8166b0eea306e3 100644
--- a/Lib/test/test_compare.py
+++ b/Lib/test/test_compare.py
@@ -1,21 +1,27 @@
+"""Test equality and order comparisons."""
 import unittest
 from test.support import ALWAYS_EQ
+from fractions import Fraction
+from decimal import Decimal
 
-class Empty:
-    def __repr__(self):
-        return '<Empty>'
 
-class Cmp:
-    def __init__(self,arg):
-        self.arg = arg
+class ComparisonSimpleTest(unittest.TestCase):
+    """Test equality and order comparisons for some simple cases."""
 
-    def __repr__(self):
-        return '<Cmp %s>' % self.arg
+    class Empty:
+        def __repr__(self):
+            return '<Empty>'
 
-    def __eq__(self, other):
-        return self.arg == other
+    class Cmp:
+        def __init__(self, arg):
+            self.arg = arg
+
+        def __repr__(self):
+            return '<Cmp %s>' % self.arg
+
+        def __eq__(self, other):
+            return self.arg == other
 
-class ComparisonTest(unittest.TestCase):
     set1 = [2, 2.0, 2, 2+0j, Cmp(2.0)]
     set2 = [[1], (3,), None, Empty()]
     candidates = set1 + set2
@@ -32,16 +38,15 @@ def test_id_comparisons(self):
         # Ensure default comparison compares id() of args
         L = []
         for i in range(10):
-            L.insert(len(L)//2, Empty())
+            L.insert(len(L)//2, self.Empty())
         for a in L:
             for b in L:
-                self.assertEqual(a == b, id(a) == id(b),
-                                 'a=%r, b=%r' % (a, b))
+                self.assertEqual(a == b, a is b, 'a=%r, b=%r' % (a, b))
 
     def test_ne_defaults_to_not_eq(self):
-        a = Cmp(1)
-        b = Cmp(1)
-        c = Cmp(2)
+        a = self.Cmp(1)
+        b = self.Cmp(1)
+        c = self.Cmp(2)
         self.assertIs(a == b, True)
         self.assertIs(a != b, False)
         self.assertIs(a != c, True)
@@ -114,5 +119,392 @@ def test_issue_1393(self):
         self.assertEqual(ALWAYS_EQ, y)
 
 
+class ComparisonFullTest(unittest.TestCase):
+    """Test equality and ordering comparisons for built-in types and
+    user-defined classes that implement relevant combinations of rich
+    comparison methods.
+    """
+
+    class CompBase:
+        """Base class for classes with rich comparison methods.
+
+        The "x" attribute should be set to an underlying value to compare.
+
+        Derived classes have a "meth" tuple attribute listing names of
+        comparison methods implemented. See assert_total_order().
+        """
+
+    # Class without any rich comparison methods.
+    class CompNone(CompBase):
+        meth = ()
+
+    # Classes with all combinations of value-based equality comparison methods.
+    class CompEq(CompBase):
+        meth = ("eq",)
+        def __eq__(self, other):
+            return self.x == other.x
+
+    class CompNe(CompBase):
+        meth = ("ne",)
+        def __ne__(self, other):
+            return self.x != other.x
+
+    class CompEqNe(CompBase):
+        meth = ("eq", "ne")
+        def __eq__(self, other):
+            return self.x == other.x
+        def __ne__(self, other):
+            return self.x != other.x
+
+    # Classes with all combinations of value-based less/greater-than order
+    # comparison methods.
+    class CompLt(CompBase):
+        meth = ("lt",)
+        def __lt__(self, other):
+            return self.x < other.x
+
+    class CompGt(CompBase):
+        meth = ("gt",)
+        def __gt__(self, other):
+            return self.x > other.x
+
+    class CompLtGt(CompBase):
+        meth = ("lt", "gt")
+        def __lt__(self, other):
+            return self.x < other.x
+        def __gt__(self, other):
+            return self.x > other.x
+
+    # Classes with all combinations of value-based less/greater-or-equal-than
+    # order comparison methods
+    class CompLe(CompBase):
+        meth = ("le",)
+        def __le__(self, other):
+            return self.x <= other.x
+
+    class CompGe(CompBase):
+        meth = ("ge",)
+        def __ge__(self, other):
+            return self.x >= other.x
+
+    class CompLeGe(CompBase):
+        meth = ("le", "ge")
+        def __le__(self, other):
+            return self.x <= other.x
+        def __ge__(self, other):
+            return self.x >= other.x
+
+    # It should be sufficient to combine the comparison methods only within
+    # each group.
+    all_comp_classes = (
+            CompNone,
+            CompEq, CompNe, CompEqNe,  # equal group
+            CompLt, CompGt, CompLtGt,  # less/greater-than group
+            CompLe, CompGe, CompLeGe)  # less/greater-or-equal group
+
+    def create_sorted_instances(self, class_, values):
+        """Create objects of type `class_` and return them in a list.
+
+        `values` is a list of values that determines the value of data
+        attribute `x` of each object.
+
+        Objects in the returned list are sorted by their identity.  They
+        assigned values in `values` list order.  By assign decreasing
+        values to objects with increasing identities, testcases can assert
+        that order comparison is performed by value and not by identity.
+        """
+
+        instances = [class_() for __ in range(len(values))]
+        instances.sort(key=id)
+        # Assign the provided values to the instances.
+        for inst, value in zip(instances, values):
+            inst.x = value
+        return instances
+
+    def assert_equality_only(self, a, b, equal):
+        """Assert equality result and that ordering is not implemented.
+
+        a, b: Instances to be tested (of same or different type).
+        equal: Boolean indicating the expected equality comparison results.
+        """
+        self.assertEqual(a == b, equal)
+        self.assertEqual(b == a, equal)
+        self.assertEqual(a != b, not equal)
+        self.assertEqual(b != a, not equal)
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            a < b
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            a <= b
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            a > b
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            a >= b
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            b < a
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            b <= a
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            b > a
+        with self.assertRaisesRegex(TypeError, "not supported"):
+            b >= a
+
+    def assert_total_order(self, a, b, comp, a_meth=None, b_meth=None):
+        """Test total ordering comparison of two instances.
+
+        a, b: Instances to be tested (of same or different type).
+
+        comp: -1, 0, or 1 indicates that the expected order comparison
+           result for operations that are supported by the classes is
+           a <, ==, or > b.
+
+        a_meth, b_meth: Either None, indicating that all rich comparison
+           methods are available, aa for builtins, or the tuple (subset)
+           of "eq", "ne", "lt", "le", "gt", and "ge" that are available
+           for the corresponding instance (of a user-defined class).
+        """
+        self.assert_eq_subtest(a, b, comp, a_meth, b_meth)
+        self.assert_ne_subtest(a, b, comp, a_meth, b_meth)
+        self.assert_lt_subtest(a, b, comp, a_meth, b_meth)
+        self.assert_le_subtest(a, b, comp, a_meth, b_meth)
+        self.assert_gt_subtest(a, b, comp, a_meth, b_meth)
+        self.assert_ge_subtest(a, b, comp, a_meth, b_meth)
+
+    # The body of each subtest has form:
+    #
+    #     if value-based comparison methods:
+    #         expect what the testcase defined for a op b and b rop a;
+    #     else:  no value-based comparison
+    #         expect default behavior of object for a op b and b rop a.
+
+    def assert_eq_subtest(self, a, b, comp, a_meth, b_meth):
+        if a_meth is None or "eq" in a_meth or "eq" in b_meth:
+            self.assertEqual(a == b, comp == 0)
+            self.assertEqual(b == a, comp == 0)
+        else:
+            self.assertEqual(a == b, a is b)
+            self.assertEqual(b == a, a is b)
+
+    def assert_ne_subtest(self, a, b, comp, a_meth, b_meth):
+        if a_meth is None or not {"ne", "eq"}.isdisjoint(a_meth + b_meth):
+            self.assertEqual(a != b, comp != 0)
+            self.assertEqual(b != a, comp != 0)
+        else:
+            self.assertEqual(a != b, a is not b)
+            self.assertEqual(b != a, a is not b)
+
+    def assert_lt_subtest(self, a, b, comp, a_meth, b_meth):
+        if a_meth is None or "lt" in a_meth or "gt" in b_meth:
+            self.assertEqual(a < b, comp < 0)
+            self.assertEqual(b > a, comp < 0)
+        else:
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                a < b
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                b > a
+
+    def assert_le_subtest(self, a, b, comp, a_meth, b_meth):
+        if a_meth is None or "le" in a_meth or "ge" in b_meth:
+            self.assertEqual(a <= b, comp <= 0)
+            self.assertEqual(b >= a, comp <= 0)
+        else:
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                a <= b
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                b >= a
+
+    def assert_gt_subtest(self, a, b, comp, a_meth, b_meth):
+        if a_meth is None or "gt" in a_meth or "lt" in b_meth:
+            self.assertEqual(a > b, comp > 0)
+            self.assertEqual(b < a, comp > 0)
+        else:
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                a > b
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                b < a
+
+    def assert_ge_subtest(self, a, b, comp, a_meth, b_meth):
+        if a_meth is None or "ge" in a_meth or "le" in b_meth:
+            self.assertEqual(a >= b, comp >= 0)
+            self.assertEqual(b <= a, comp >= 0)
+        else:
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                a >= b
+            with self.assertRaisesRegex(TypeError, "not supported"):
+                b <= a
+
+    def test_objects(self):
+        """Compare instances of type 'object'."""
+        a = object()
+        b = object()
+        self.assert_equality_only(a, a, True)
+        self.assert_equality_only(a, b, False)
+
+    def test_comp_classes_same(self):
+        """Compare same-class instances with comparison methods."""
+
+        for cls in self.all_comp_classes:
+            with self.subTest(cls):
+                instances = self.create_sorted_instances(cls, (1, 2, 1))
+
+                # Same object.
+                self.assert_total_order(instances[0], instances[0], 0,
+                                        cls.meth, cls.meth)
+
+                # Different objects, same value.
+                self.assert_total_order(instances[0], instances[2], 0,
+                                        cls.meth, cls.meth)
+
+                # Different objects, value ascending for ascending identities.
+                self.assert_total_order(instances[0], instances[1], -1,
+                                        cls.meth, cls.meth)
+
+                # different objects, value descending for ascending identities.
+                # This is the interesting case to assert that order comparison
+                # is performed based on the value and not based on the identity.
+                self.assert_total_order(instances[1], instances[2], +1,
+                                        cls.meth, cls.meth)
+
+    def test_comp_classes_different(self):
+        """Compare different-class instances with comparison methods."""
+
+        for cls_a in self.all_comp_classes:
+            for cls_b in self.all_comp_classes:
+                with self.subTest(a=cls_a, b=cls_b):
+                    a1 = cls_a()
+                    a1.x = 1
+                    b1 = cls_b()
+                    b1.x = 1
+                    b2 = cls_b()
+                    b2.x = 2
+
+                    self.assert_total_order(
+                        a1, b1, 0, cls_a.meth, cls_b.meth)
+                    self.assert_total_order(
+                        a1, b2, -1, cls_a.meth, cls_b.meth)
+
+    def test_str_subclass(self):
+        """Compare instances of str and a subclass."""
+        class StrSubclass(str):
+            pass
+
+        s1 = str("a")
+        s2 = str("b")
+        c1 = StrSubclass("a")
+        c2 = StrSubclass("b")
+        c3 = StrSubclass("b")
+
+        self.assert_total_order(s1, s1,   0)
+        self.assert_total_order(s1, s2, -1)
+        self.assert_total_order(c1, c1,   0)
+        self.assert_total_order(c1, c2, -1)
+        self.assert_total_order(c2, c3,   0)
+
+        self.assert_total_order(s1, c2, -1)
+        self.assert_total_order(s2, c3,   0)
+        self.assert_total_order(c1, s2, -1)
+        self.assert_total_order(c2, s2,   0)
+
+    def test_numbers(self):
+        """Compare number types."""
+
+        # Same types.
+        i1 = 1001
+        i2 = 1002
+        self.assert_total_order(i1, i1, 0)
+        self.assert_total_order(i1, i2, -1)
+
+        f1 = 1001.0
+        f2 = 1001.1
+        self.assert_total_order(f1, f1, 0)
+        self.assert_total_order(f1, f2, -1)
+
+        q1 = Fraction(2002, 2)
+        q2 = Fraction(2003, 2)
+        self.assert_total_order(q1, q1, 0)
+        self.assert_total_order(q1, q2, -1)
+
+        d1 = Decimal('1001.0')
+        d2 = Decimal('1001.1')
+        self.assert_total_order(d1, d1, 0)
+        self.assert_total_order(d1, d2, -1)
+
+        c1 = 1001+0j
+        c2 = 1001+1j
+        self.assert_equality_only(c1, c1, True)
+        self.assert_equality_only(c1, c2, False)
+
+
+        # Mixing types.
+        for n1, n2 in ((i1,f1), (i1,q1), (i1,d1), (f1,q1), (f1,d1), (q1,d1)):
+            self.assert_total_order(n1, n2, 0)
+        for n1 in (i1, f1, q1, d1):
+            self.assert_equality_only(n1, c1, True)
+
+    def test_sequences(self):
+        """Compare list, tuple, and range."""
+        l1 = [1, 2]
+        l2 = [2, 3]
+        self.assert_total_order(l1, l1, 0)
+        self.assert_total_order(l1, l2, -1)
+
+        t1 = (1, 2)
+        t2 = (2, 3)
+        self.assert_total_order(t1, t1, 0)
+        self.assert_total_order(t1, t2, -1)
+
+        r1 = range(1, 2)
+        r2 = range(2, 2)
+        self.assert_equality_only(r1, r1, True)
+        self.assert_equality_only(r1, r2, False)
+
+        self.assert_equality_only(t1, l1, False)
+        self.assert_equality_only(l1, r1, False)
+        self.assert_equality_only(r1, t1, False)
+
+    def test_bytes(self):
+        """Compare bytes and bytearray."""
+        bs1 = b'a1'
+        bs2 = b'b2'
+        self.assert_total_order(bs1, bs1, 0)
+        self.assert_total_order(bs1, bs2, -1)
+
+        ba1 = bytearray(b'a1')
+        ba2 = bytearray(b'b2')
+        self.assert_total_order(ba1, ba1,  0)
+        self.assert_total_order(ba1, ba2, -1)
+
+        self.assert_total_order(bs1, ba1, 0)
+        self.assert_total_order(bs1, ba2, -1)
+        self.assert_total_order(ba1, bs1, 0)
+        self.assert_total_order(ba1, bs2, -1)
+
+    def test_sets(self):
+        """Compare set and frozenset."""
+        s1 = {1, 2}
+        s2 = {1, 2, 3}
+        self.assert_total_order(s1, s1, 0)
+        self.assert_total_order(s1, s2, -1)
+
+        f1 = frozenset(s1)
+        f2 = frozenset(s2)
+        self.assert_total_order(f1, f1,  0)
+        self.assert_total_order(f1, f2, -1)
+
+        self.assert_total_order(s1, f1, 0)
+        self.assert_total_order(s1, f2, -1)
+        self.assert_total_order(f1, s1, 0)
+        self.assert_total_order(f1, s2, -1)
+
+    def test_mappings(self):
+        """ Compare dict.
+        """
+        d1 = {1: "a", 2: "b"}
+        d2 = {2: "b", 3: "c"}
+        d3 = {3: "c", 2: "b"}
+        self.assert_equality_only(d1, d1, True)
+        self.assert_equality_only(d1, d2, False)
+        self.assert_equality_only(d2, d3, True)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_compile.py b/Lib/test/test_compile.py
index c68b9ce388466e..df6e5e4b55f728 100644
--- a/Lib/test/test_compile.py
+++ b/Lib/test/test_compile.py
@@ -11,10 +11,9 @@
 import warnings
 from test import support
 from test.support import (script_helper, requires_debug_ranges,
-                          requires_specialization)
+                          requires_specialization, Py_C_RECURSION_LIMIT)
 from test.support.os_helper import FakePath
 
-
 class TestSpecifics(unittest.TestCase):
 
     def compile_single(self, source):
@@ -112,7 +111,7 @@ def __getitem__(self, key):
 
     @unittest.skipIf(support.is_wasi, "exhausts limited stack on WASI")
     def test_extended_arg(self):
-        repeat = 2000
+        repeat = int(Py_C_RECURSION_LIMIT * 0.9)
         longexpr = 'x = x or ' + '-x' * repeat
         g = {}
         code = textwrap.dedent('''
@@ -444,6 +443,33 @@ def f():
         self.assertIn("_A__mangled_mod", A.f.__code__.co_varnames)
         self.assertIn("__package__", A.f.__code__.co_varnames)
 
+    def test_compile_invalid_namedexpr(self):
+        # gh-109351
+        m = ast.Module(
+            body=[
+                ast.Expr(
+                    value=ast.ListComp(
+                        elt=ast.NamedExpr(
+                            target=ast.Constant(value=1),
+                            value=ast.Constant(value=3),
+                        ),
+                        generators=[
+                            ast.comprehension(
+                                target=ast.Name(id="x", ctx=ast.Store()),
+                                iter=ast.Name(id="y", ctx=ast.Load()),
+                                ifs=[],
+                                is_async=0,
+                            )
+                        ],
+                    )
+                )
+            ],
+            type_ignores=[],
+        )
+
+        with self.assertRaisesRegex(TypeError, "NamedExpr target must be a Name"):
+            compile(ast.fix_missing_locations(m), "<file>", "exec")
+
     def test_compile_ast(self):
         fname = __file__
         if fname.lower().endswith('pyc'):
@@ -479,6 +505,26 @@ def test_compile_ast(self):
         ast.body = [_ast.BoolOp()]
         self.assertRaises(TypeError, compile, ast, '<ast>', 'exec')
 
+    def test_compile_invalid_typealias(self):
+        # gh-109341
+        m = ast.Module(
+            body=[
+                ast.TypeAlias(
+                    name=ast.Subscript(
+                        value=ast.Name(id="foo", ctx=ast.Load()),
+                        slice=ast.Constant(value="x"),
+                        ctx=ast.Store(),
+                    ),
+                    type_params=[],
+                    value=ast.Name(id="Callable", ctx=ast.Load()),
+                )
+            ],
+            type_ignores=[],
+        )
+
+        with self.assertRaisesRegex(TypeError, "TypeAlias with non-Name name"):
+            compile(ast.fix_missing_locations(m), "<file>", "exec")
+
     def test_dict_evaluation_order(self):
         i = 0
 
@@ -558,16 +604,12 @@ def test_yet_more_evil_still_undecodable(self):
     @support.cpython_only
     @unittest.skipIf(support.is_wasi, "exhausts limited stack on WASI")
     def test_compiler_recursion_limit(self):
-        # Expected limit is sys.getrecursionlimit() * the scaling factor
-        # in symtable.c (currently 3)
-        # We expect to fail *at* that limit, because we use up some of
-        # the stack depth limit in the test suite code
-        # So we check the expected limit and 75% of that
-        # XXX (ncoghlan): duplicating the scaling factor here is a little
-        # ugly. Perhaps it should be exposed somewhere...
-        fail_depth = sys.getrecursionlimit() * 3
-        crash_depth = sys.getrecursionlimit() * 300
-        success_depth = int(fail_depth * 0.75)
+        # Expected limit is Py_C_RECURSION_LIMIT * 2
+        # Duplicating the limit here is a little ugly.
+        # Perhaps it should be exposed somewhere...
+        fail_depth = Py_C_RECURSION_LIMIT * 2 + 1
+        crash_depth = Py_C_RECURSION_LIMIT * 100
+        success_depth = int(Py_C_RECURSION_LIMIT * 1.8)
 
         def check_limit(prefix, repeated, mode="single"):
             expect_ok = prefix + repeated * success_depth
@@ -789,6 +831,7 @@ def test_path_like_objects(self):
         # An implicit test for PyUnicode_FSDecoder().
         compile("42", FakePath("test_compile_pathlike"), "single")
 
+    @support.requires_resource('cpu')
     def test_stack_overflow(self):
         # bpo-31113: Stack overflow when compile a long sequence of
         # complex statements.
@@ -1036,6 +1079,20 @@ async def test(aseq):
         code_lines = self.get_code_lines(test.__code__)
         self.assertEqual(expected_lines, code_lines)
 
+    def test_lineno_of_backward_jump(self):
+        # Issue gh-107901
+        def f():
+            for i in x:
+                if y:
+                    pass
+
+        linenos = list(inst.positions.lineno
+                       for inst in dis.get_instructions(f.__code__)
+                       if inst.opname == 'JUMP_BACKWARD')
+
+        self.assertTrue(len(linenos) > 0)
+        self.assertTrue(all(l is not None for l in linenos))
+
     def test_big_dict_literal(self):
         # The compiler has a flushing point in "compiler_dict" that calls compiles
         # a portion of the dictionary literal when the loop that iterates over the items
@@ -1168,6 +1225,80 @@ def foo(param, lambda_exp):
         """)
         compile(code, "<test>", "exec")
 
+    def test_apply_static_swaps(self):
+        def f(x, y):
+            a, a = x, y
+            return a
+        self.assertEqual(f("x", "y"), "y")
+
+    def test_apply_static_swaps_2(self):
+        def f(x, y, z):
+            a, b, a = x, y, z
+            return a
+        self.assertEqual(f("x", "y", "z"), "z")
+
+    def test_apply_static_swaps_3(self):
+        def f(x, y, z):
+            a, a, b = x, y, z
+            return a
+        self.assertEqual(f("x", "y", "z"), "y")
+
+    def test_variable_dependent(self):
+        # gh-104635: Since the value of b is dependent on the value of a
+        # the first STORE_FAST for a should not be skipped. (e.g POP_TOP).
+        # This test case is added to prevent potential regression from aggressive optimization.
+        def f():
+            a = 42; b = a + 54; a = 54
+            return a, b
+        self.assertEqual(f(), (54, 96))
+
+    def test_duplicated_small_exit_block(self):
+        # See gh-109627
+        def f():
+            while element and something:
+                try:
+                    return something
+                except:
+                    pass
+
+    def test_cold_block_moved_to_end(self):
+        # See gh-109719
+        def f():
+            while name:
+                try:
+                    break
+                except:
+                    pass
+            else:
+                1 if 1 else 1
+
+    def test_remove_empty_basic_block_with_jump_target_label(self):
+        # See gh-109823
+        def f(x):
+            while x:
+                0 if 1 else 0
+
+    def test_remove_redundant_nop_edge_case(self):
+        # See gh-109889
+        def f():
+            a if (1 if b else c) else d
+
+    def test_global_declaration_in_except_used_in_else(self):
+        # See gh-111123
+        code = textwrap.dedent("""\
+            def f():
+                try:
+                    pass
+                %s Exception:
+                    global a
+                else:
+                    print(a)
+        """)
+
+        g, l = {'a': 5}, {}
+        for kw in ("except", "except*"):
+            exec(code % kw, g, l);
+
 
 @requires_debug_ranges()
 class TestSourcePositions(unittest.TestCase):
@@ -1293,18 +1424,18 @@ def test_multiline_assert(self):
         snippet = textwrap.dedent("""\
             assert (a > 0 and
                     bb > 0 and
-                    ccc == 4), "error msg"
+                    ccc == 1000000), "error msg"
             """)
         compiled_code, _ = self.check_positions_against_ast(snippet)
         self.assertOpcodeSourcePositionIs(compiled_code, 'LOAD_ASSERTION_ERROR',
-            line=1, end_line=3, column=0, end_column=30, occurrence=1)
+            line=1, end_line=3, column=0, end_column=36, occurrence=1)
         #  The "error msg":
         self.assertOpcodeSourcePositionIs(compiled_code, 'LOAD_CONST',
-            line=3, end_line=3, column=19, end_column=30, occurrence=4)
+            line=3, end_line=3, column=25, end_column=36, occurrence=4)
         self.assertOpcodeSourcePositionIs(compiled_code, 'CALL',
-            line=1, end_line=3, column=0, end_column=30, occurrence=1)
+            line=1, end_line=3, column=0, end_column=36, occurrence=1)
         self.assertOpcodeSourcePositionIs(compiled_code, 'RAISE_VARARGS',
-            line=1, end_line=3, column=0, end_column=30, occurrence=1)
+            line=1, end_line=3, column=8, end_column=22, occurrence=1)
 
     def test_multiline_generator_expression(self):
         snippet = textwrap.dedent("""\
@@ -1714,6 +1845,13 @@ def test_column_offset_deduplication(self):
                     list(code.co_consts[1].co_positions()),
                 )
 
+    def test_load_super_attr(self):
+        source = "class C:\n  def __init__(self):\n    super().__init__()"
+        code = compile(source, "<test>", "exec").co_consts[0].co_consts[1]
+        self.assertOpcodeSourcePositionIs(
+            code, "LOAD_GLOBAL", line=3, end_line=3, column=4, end_column=9
+        )
+
 
 class TestExpressionStackSize(unittest.TestCase):
     # These tests check that the computed stack size for a code object
diff --git a/Lib/test/test_compileall.py b/Lib/test/test_compileall.py
index 05154c8f1c6057..83a9532aecfac8 100644
--- a/Lib/test/test_compileall.py
+++ b/Lib/test/test_compileall.py
@@ -18,6 +18,7 @@
 try:
     # compileall relies on ProcessPoolExecutor if ProcessPoolExecutor exists
     # and it can function.
+    from multiprocessing.util import _cleanup_tests as multiprocessing_cleanup_tests
     from concurrent.futures import ProcessPoolExecutor
     from concurrent.futures.process import _check_system_limits
     _check_system_limits()
@@ -54,6 +55,8 @@ class CompileallTestsBase:
 
     def setUp(self):
         self.directory = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, self.directory)
+
         self.source_path = os.path.join(self.directory, '_test.py')
         self.bc_path = importlib.util.cache_from_source(self.source_path)
         with open(self.source_path, 'w', encoding="utf-8") as file:
@@ -66,9 +69,6 @@ def setUp(self):
         self.source_path3 = os.path.join(self.subdirectory, '_test3.py')
         shutil.copyfile(self.source_path, self.source_path3)
 
-    def tearDown(self):
-        shutil.rmtree(self.directory)
-
     def add_bad_source_file(self):
         self.bad_source_path = os.path.join(self.directory, '_test_bad.py')
         with open(self.bad_source_path, 'w', encoding="utf-8") as file:
@@ -307,9 +307,13 @@ def _test_ddir_only(self, *, ddir, parallel=True):
             script_helper.make_script(path, "__init__", "")
             mods.append(script_helper.make_script(path, "mod",
                                                   "def fn(): 1/0\nfn()\n"))
+
+        if parallel:
+            self.addCleanup(multiprocessing_cleanup_tests)
         compileall.compile_dir(
                 self.directory, quiet=True, ddir=ddir,
                 workers=2 if parallel else 1)
+
         self.assertTrue(mods)
         for mod in mods:
             self.assertTrue(mod.startswith(self.directory), mod)
@@ -358,6 +362,29 @@ def test_strip_only(self):
             str(err, encoding=sys.getdefaultencoding())
         )
 
+    def test_strip_only_invalid(self):
+        fullpath = ["test", "build", "real", "path"]
+        path = os.path.join(self.directory, *fullpath)
+        os.makedirs(path)
+        script = script_helper.make_script(path, "test", "1 / 0")
+        bc = importlib.util.cache_from_source(script)
+        stripdir = os.path.join(self.directory, *(fullpath[:2] + ['fake']))
+        compileall.compile_dir(path, quiet=True, stripdir=stripdir)
+        rc, out, err = script_helper.assert_python_failure(bc)
+        expected_not_in = os.path.join(self.directory, *fullpath[2:])
+        self.assertIn(
+            path,
+            str(err, encoding=sys.getdefaultencoding())
+        )
+        self.assertNotIn(
+            expected_not_in,
+            str(err, encoding=sys.getdefaultencoding())
+        )
+        self.assertNotIn(
+            stripdir,
+            str(err, encoding=sys.getdefaultencoding())
+        )
+
     def test_prepend_only(self):
         fullpath = ["test", "build", "real", "path"]
         path = os.path.join(self.directory, *fullpath)
@@ -551,6 +578,7 @@ def test_no_args_compiles_path(self):
             self.assertNotCompiled(self.barfn)
 
     @without_source_date_epoch  # timestamp invalidation test
+    @support.requires_resource('cpu')
     def test_no_args_respects_force_flag(self):
         bazfn = script_helper.make_script(self.directory, 'baz', '')
         with self.temporary_pycache_prefix() as env:
@@ -568,6 +596,7 @@ def test_no_args_respects_force_flag(self):
         mtime2 = os.stat(pycpath).st_mtime
         self.assertNotEqual(mtime, mtime2)
 
+    @support.requires_resource('cpu')
     def test_no_args_respects_quiet_flag(self):
         script_helper.make_script(self.directory, 'baz', '')
         with self.temporary_pycache_prefix() as env:
diff --git a/Lib/test/test_compiler_assemble.py b/Lib/test/test_compiler_assemble.py
index 3e2a127de728cd..5696433e529d0a 100644
--- a/Lib/test/test_compiler_assemble.py
+++ b/Lib/test/test_compiler_assemble.py
@@ -1,5 +1,3 @@
-
-import ast
 import types
 
 from test.support.bytecode_helper import AssemblerTestCase
@@ -72,3 +70,41 @@ def test_simple_expr(self):
         ]
         expected = {(3, 4) : 3.5, (-100, 200) : 50, (10, 18) : 14}
         self.assemble_test(insts, metadata, expected)
+
+
+    def test_expression_with_pseudo_instruction_load_closure(self):
+
+        def mod_two(x):
+            def inner():
+                return x
+            return inner() % 2
+
+        inner_code = mod_two.__code__.co_consts[1]
+        assert isinstance(inner_code, types.CodeType)
+
+        metadata = {
+            'filename' : 'mod_two.py',
+            'name'     : 'mod_two',
+            'qualname' : 'nested.mod_two',
+            'cellvars' : {'x' : 0},
+            'consts': {None: 0, inner_code: 1, 2: 2},
+            'argcount' : 1,
+            'varnames' : {'x' : 0},
+        }
+
+        instructions = [
+            ('RESUME', 0,),
+            ('LOAD_CLOSURE', 0, 1),
+            ('BUILD_TUPLE', 1, 1),
+            ('LOAD_CONST', 1, 1),
+            ('MAKE_FUNCTION', 0, 2),
+            ('SET_FUNCTION_ATTRIBUTE', 8, 2),
+            ('PUSH_NULL', 0, 1),
+            ('CALL', 0, 2),                     # (lambda: x)()
+            ('LOAD_CONST', 2, 2),               # 2
+            ('BINARY_OP', 6, 2),                # %
+            ('RETURN_VALUE', 0, 2)
+        ]
+
+        expected = {(0,): 0, (1,): 1, (2,): 0, (120,): 0, (121,): 1}
+        self.assemble_test(instructions, metadata, expected)
diff --git a/Lib/test/test_compiler_codegen.py b/Lib/test/test_compiler_codegen.py
index ea57df9cd2400b..6d7731ddba02c5 100644
--- a/Lib/test/test_compiler_codegen.py
+++ b/Lib/test/test_compiler_codegen.py
@@ -18,6 +18,7 @@ def test_if_expression(self):
         expected = [
             ('RESUME', 0, 0),
             ('LOAD_CONST', 0, 1),
+            ('TO_BOOL', 0, 1),
             ('POP_JUMP_IF_FALSE', false_lbl := self.Label(), 1),
             ('LOAD_CONST', 1, 1),
             ('JUMP', exit_lbl := self.Label()),
@@ -40,8 +41,8 @@ def test_for_loop(self):
             loop_lbl := self.Label(),
             ('FOR_ITER', exit_lbl := self.Label(), 1),
             ('STORE_NAME', 1, 1),
-            ('PUSH_NULL', None, 2),
             ('LOAD_NAME', 2, 2),
+            ('PUSH_NULL', None, 2),
             ('LOAD_NAME', 1, 2),
             ('CALL', 1, 2),
             ('POP_TOP', None),
diff --git a/Lib/test/test_complex.py b/Lib/test/test_complex.py
index 9180cca62b28b8..b057121f285dc7 100644
--- a/Lib/test/test_complex.py
+++ b/Lib/test/test_complex.py
@@ -109,6 +109,8 @@ def test_truediv(self):
                            complex(random(), random()))
 
         self.assertAlmostEqual(complex.__truediv__(2+0j, 1+1j), 1-1j)
+        self.assertRaises(TypeError, operator.truediv, 1j, None)
+        self.assertRaises(TypeError, operator.truediv, None, 1j)
 
         for denom_real, denom_imag in [(0, NAN), (NAN, 0), (NAN, NAN)]:
             z = complex(0, 0) / complex(denom_real, denom_imag)
@@ -140,6 +142,7 @@ def test_floordiv_zero_division(self):
     def test_richcompare(self):
         self.assertIs(complex.__eq__(1+1j, 1<<10000), False)
         self.assertIs(complex.__lt__(1+1j, None), NotImplemented)
+        self.assertIs(complex.__eq__(1+1j, None), NotImplemented)
         self.assertIs(complex.__eq__(1+1j, 1+1j), True)
         self.assertIs(complex.__eq__(1+1j, 2+2j), False)
         self.assertIs(complex.__ne__(1+1j, 1+1j), False)
@@ -162,6 +165,7 @@ def test_richcompare(self):
         self.assertIs(operator.eq(1+1j, 2+2j), False)
         self.assertIs(operator.ne(1+1j, 1+1j), False)
         self.assertIs(operator.ne(1+1j, 2+2j), True)
+        self.assertIs(operator.eq(1+1j, 2.0), False)
 
     def test_richcompare_boundaries(self):
         def check(n, deltas, is_equal, imag = 0.0):
@@ -180,6 +184,27 @@ def check(n, deltas, is_equal, imag = 0.0):
             check(2 ** pow, range(1, 101), lambda delta: False, float(i))
         check(2 ** 53, range(-100, 0), lambda delta: True)
 
+    def test_add(self):
+        self.assertEqual(1j + int(+1), complex(+1, 1))
+        self.assertEqual(1j + int(-1), complex(-1, 1))
+        self.assertRaises(OverflowError, operator.add, 1j, 10**1000)
+        self.assertRaises(TypeError, operator.add, 1j, None)
+        self.assertRaises(TypeError, operator.add, None, 1j)
+
+    def test_sub(self):
+        self.assertEqual(1j - int(+1), complex(-1, 1))
+        self.assertEqual(1j - int(-1), complex(1, 1))
+        self.assertRaises(OverflowError, operator.sub, 1j, 10**1000)
+        self.assertRaises(TypeError, operator.sub, 1j, None)
+        self.assertRaises(TypeError, operator.sub, None, 1j)
+
+    def test_mul(self):
+        self.assertEqual(1j * int(20), complex(0, 20))
+        self.assertEqual(1j * int(-1), complex(0, -1))
+        self.assertRaises(OverflowError, operator.mul, 1j, 10**1000)
+        self.assertRaises(TypeError, operator.mul, 1j, None)
+        self.assertRaises(TypeError, operator.mul, None, 1j)
+
     def test_mod(self):
         # % is no longer supported on complex numbers
         with self.assertRaises(TypeError):
@@ -212,11 +237,18 @@ def test_divmod_zero_division(self):
     def test_pow(self):
         self.assertAlmostEqual(pow(1+1j, 0+0j), 1.0)
         self.assertAlmostEqual(pow(0+0j, 2+0j), 0.0)
+        self.assertEqual(pow(0+0j, 2000+0j), 0.0)
+        self.assertEqual(pow(0, 0+0j), 1.0)
+        self.assertEqual(pow(-1, 0+0j), 1.0)
         self.assertRaises(ZeroDivisionError, pow, 0+0j, 1j)
+        self.assertRaises(ZeroDivisionError, pow, 0+0j, -1000)
         self.assertAlmostEqual(pow(1j, -1), 1/1j)
         self.assertAlmostEqual(pow(1j, 200), 1)
         self.assertRaises(ValueError, pow, 1+1j, 1+1j, 1+1j)
         self.assertRaises(OverflowError, pow, 1e200+1j, 1e200+1j)
+        self.assertRaises(TypeError, pow, 1j, None)
+        self.assertRaises(TypeError, pow, None, 1j)
+        self.assertAlmostEqual(pow(1j, 0.5), 0.7071067811865476+0.7071067811865475j)
 
         a = 3.33+4.43j
         self.assertEqual(a ** 0j, 1)
@@ -301,6 +333,7 @@ def test_boolcontext(self):
         for i in range(100):
             self.assertTrue(complex(random() + 1e-6, random() + 1e-6))
         self.assertTrue(not complex(0.0, 0.0))
+        self.assertTrue(1j)
 
     def test_conjugate(self):
         self.assertClose(complex(5.3, 9.8).conjugate(), 5.3-9.8j)
@@ -314,6 +347,8 @@ def __complex__(self): return self.value
         self.assertRaises(TypeError, complex, {})
         self.assertRaises(TypeError, complex, NS(1.5))
         self.assertRaises(TypeError, complex, NS(1))
+        self.assertRaises(TypeError, complex, object())
+        self.assertRaises(TypeError, complex, NS(4.25+0.5j), object())
 
         self.assertAlmostEqual(complex("1+10j"), 1+10j)
         self.assertAlmostEqual(complex(10), 10+0j)
@@ -359,6 +394,8 @@ def __complex__(self): return self.value
         self.assertAlmostEqual(complex('1e-500'), 0.0 + 0.0j)
         self.assertAlmostEqual(complex('-1e-500j'), 0.0 - 0.0j)
         self.assertAlmostEqual(complex('-1e-500+1e-500j'), -0.0 + 0.0j)
+        self.assertEqual(complex('1-1j'), 1.0 - 1j)
+        self.assertEqual(complex('1J'), 1j)
 
         class complex2(complex): pass
         self.assertAlmostEqual(complex(complex2(1+1j)), 1+1j)
@@ -553,6 +590,8 @@ def test_hash(self):
             x /= 3.0    # now check against floating point
             self.assertEqual(hash(x), hash(complex(x, 0.)))
 
+        self.assertNotEqual(hash(2000005 - 1j), -1)
+
     def test_abs(self):
         nums = [complex(x/3., y/7.) for x in range(-9,9) for y in range(-9,9)]
         for num in nums:
@@ -602,6 +641,14 @@ def test(v, expected, test_fn=self.assertEqual):
         test(complex(-0., 0.),  "(-0+0j)")
         test(complex(-0., -0.), "(-0-0j)")
 
+    def test_pos(self):
+        class ComplexSubclass(complex):
+            pass
+
+        self.assertEqual(+(1+6j), 1+6j)
+        self.assertEqual(+ComplexSubclass(1, 6), 1+6j)
+        self.assertIs(type(+ComplexSubclass(1, 6)), complex)
+
     def test_neg(self):
         self.assertEqual(-(1+6j), -1-6j)
 
diff --git a/Lib/test/test_concurrent_futures.py b/Lib/test/test_concurrent_futures.py
deleted file mode 100644
index a20cb844a293c9..00000000000000
--- a/Lib/test/test_concurrent_futures.py
+++ /dev/null
@@ -1,1659 +0,0 @@
-from test import support
-from test.support import import_helper
-from test.support import threading_helper
-
-# Skip tests if _multiprocessing wasn't built.
-import_helper.import_module('_multiprocessing')
-
-from test.support import hashlib_helper
-from test.support.script_helper import assert_python_ok
-
-import contextlib
-import itertools
-import logging
-from logging.handlers import QueueHandler
-import os
-import queue
-import signal
-import sys
-import threading
-import time
-import unittest
-import weakref
-from pickle import PicklingError
-
-from concurrent import futures
-from concurrent.futures._base import (
-    PENDING, RUNNING, CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED, Future,
-    BrokenExecutor)
-from concurrent.futures.process import BrokenProcessPool, _check_system_limits
-
-import multiprocessing.process
-import multiprocessing.util
-import multiprocessing as mp
-
-
-if support.check_sanitizer(address=True, memory=True):
-    # bpo-46633: Skip the test because it is too slow when Python is built
-    # with ASAN/MSAN: between 5 and 20 minutes on GitHub Actions.
-    raise unittest.SkipTest("test too slow on ASAN/MSAN build")
-
-
-def create_future(state=PENDING, exception=None, result=None):
-    f = Future()
-    f._state = state
-    f._exception = exception
-    f._result = result
-    return f
-
-
-PENDING_FUTURE = create_future(state=PENDING)
-RUNNING_FUTURE = create_future(state=RUNNING)
-CANCELLED_FUTURE = create_future(state=CANCELLED)
-CANCELLED_AND_NOTIFIED_FUTURE = create_future(state=CANCELLED_AND_NOTIFIED)
-EXCEPTION_FUTURE = create_future(state=FINISHED, exception=OSError())
-SUCCESSFUL_FUTURE = create_future(state=FINISHED, result=42)
-
-INITIALIZER_STATUS = 'uninitialized'
-
-def mul(x, y):
-    return x * y
-
-def capture(*args, **kwargs):
-    return args, kwargs
-
-def sleep_and_raise(t):
-    time.sleep(t)
-    raise Exception('this is an exception')
-
-def sleep_and_print(t, msg):
-    time.sleep(t)
-    print(msg)
-    sys.stdout.flush()
-
-def init(x):
-    global INITIALIZER_STATUS
-    INITIALIZER_STATUS = x
-
-def get_init_status():
-    return INITIALIZER_STATUS
-
-def init_fail(log_queue=None):
-    if log_queue is not None:
-        logger = logging.getLogger('concurrent.futures')
-        logger.addHandler(QueueHandler(log_queue))
-        logger.setLevel('CRITICAL')
-        logger.propagate = False
-    time.sleep(0.1)  # let some futures be scheduled
-    raise ValueError('error in initializer')
-
-
-class MyObject(object):
-    def my_method(self):
-        pass
-
-
-class EventfulGCObj():
-    def __init__(self, mgr):
-        self.event = mgr.Event()
-
-    def __del__(self):
-        self.event.set()
-
-
-def make_dummy_object(_):
-    return MyObject()
-
-
-class BaseTestCase(unittest.TestCase):
-    def setUp(self):
-        self._thread_key = threading_helper.threading_setup()
-
-    def tearDown(self):
-        support.reap_children()
-        threading_helper.threading_cleanup(*self._thread_key)
-
-
-class ExecutorMixin:
-    worker_count = 5
-    executor_kwargs = {}
-
-    def setUp(self):
-        super().setUp()
-
-        self.t1 = time.monotonic()
-        if hasattr(self, "ctx"):
-            self.executor = self.executor_type(
-                max_workers=self.worker_count,
-                mp_context=self.get_context(),
-                **self.executor_kwargs)
-        else:
-            self.executor = self.executor_type(
-                max_workers=self.worker_count,
-                **self.executor_kwargs)
-
-    def tearDown(self):
-        self.executor.shutdown(wait=True)
-        self.executor = None
-
-        dt = time.monotonic() - self.t1
-        if support.verbose:
-            print("%.2fs" % dt, end=' ')
-        self.assertLess(dt, 300, "synchronization issue: test lasted too long")
-
-        super().tearDown()
-
-    def get_context(self):
-        return mp.get_context(self.ctx)
-
-
-class ThreadPoolMixin(ExecutorMixin):
-    executor_type = futures.ThreadPoolExecutor
-
-
-class ProcessPoolForkMixin(ExecutorMixin):
-    executor_type = futures.ProcessPoolExecutor
-    ctx = "fork"
-
-    def get_context(self):
-        try:
-            _check_system_limits()
-        except NotImplementedError:
-            self.skipTest("ProcessPoolExecutor unavailable on this system")
-        if sys.platform == "win32":
-            self.skipTest("require unix system")
-        return super().get_context()
-
-
-class ProcessPoolSpawnMixin(ExecutorMixin):
-    executor_type = futures.ProcessPoolExecutor
-    ctx = "spawn"
-
-    def get_context(self):
-        try:
-            _check_system_limits()
-        except NotImplementedError:
-            self.skipTest("ProcessPoolExecutor unavailable on this system")
-        return super().get_context()
-
-
-class ProcessPoolForkserverMixin(ExecutorMixin):
-    executor_type = futures.ProcessPoolExecutor
-    ctx = "forkserver"
-
-    def get_context(self):
-        try:
-            _check_system_limits()
-        except NotImplementedError:
-            self.skipTest("ProcessPoolExecutor unavailable on this system")
-        if sys.platform == "win32":
-            self.skipTest("require unix system")
-        return super().get_context()
-
-
-def create_executor_tests(mixin, bases=(BaseTestCase,),
-                          executor_mixins=(ThreadPoolMixin,
-                                           ProcessPoolForkMixin,
-                                           ProcessPoolForkserverMixin,
-                                           ProcessPoolSpawnMixin)):
-    def strip_mixin(name):
-        if name.endswith(('Mixin', 'Tests')):
-            return name[:-5]
-        elif name.endswith('Test'):
-            return name[:-4]
-        else:
-            return name
-
-    for exe in executor_mixins:
-        name = ("%s%sTest"
-                % (strip_mixin(exe.__name__), strip_mixin(mixin.__name__)))
-        cls = type(name, (mixin,) + (exe,) + bases, {})
-        globals()[name] = cls
-
-
-class InitializerMixin(ExecutorMixin):
-    worker_count = 2
-
-    def setUp(self):
-        global INITIALIZER_STATUS
-        INITIALIZER_STATUS = 'uninitialized'
-        self.executor_kwargs = dict(initializer=init,
-                                    initargs=('initialized',))
-        super().setUp()
-
-    def test_initializer(self):
-        futures = [self.executor.submit(get_init_status)
-                   for _ in range(self.worker_count)]
-
-        for f in futures:
-            self.assertEqual(f.result(), 'initialized')
-
-
-class FailingInitializerMixin(ExecutorMixin):
-    worker_count = 2
-
-    def setUp(self):
-        if hasattr(self, "ctx"):
-            # Pass a queue to redirect the child's logging output
-            self.mp_context = self.get_context()
-            self.log_queue = self.mp_context.Queue()
-            self.executor_kwargs = dict(initializer=init_fail,
-                                        initargs=(self.log_queue,))
-        else:
-            # In a thread pool, the child shares our logging setup
-            # (see _assert_logged())
-            self.mp_context = None
-            self.log_queue = None
-            self.executor_kwargs = dict(initializer=init_fail)
-        super().setUp()
-
-    def test_initializer(self):
-        with self._assert_logged('ValueError: error in initializer'):
-            try:
-                future = self.executor.submit(get_init_status)
-            except BrokenExecutor:
-                # Perhaps the executor is already broken
-                pass
-            else:
-                with self.assertRaises(BrokenExecutor):
-                    future.result()
-
-            # At some point, the executor should break
-            for _ in support.sleeping_retry(support.SHORT_TIMEOUT,
-                                            "executor not broken"):
-                if self.executor._broken:
-                    break
-
-            # ... and from this point submit() is guaranteed to fail
-            with self.assertRaises(BrokenExecutor):
-                self.executor.submit(get_init_status)
-
-    @contextlib.contextmanager
-    def _assert_logged(self, msg):
-        if self.log_queue is not None:
-            yield
-            output = []
-            try:
-                while True:
-                    output.append(self.log_queue.get_nowait().getMessage())
-            except queue.Empty:
-                pass
-        else:
-            with self.assertLogs('concurrent.futures', 'CRITICAL') as cm:
-                yield
-            output = cm.output
-        self.assertTrue(any(msg in line for line in output),
-                        output)
-
-
-create_executor_tests(InitializerMixin)
-create_executor_tests(FailingInitializerMixin)
-
-
-class ExecutorShutdownTest:
-    def test_run_after_shutdown(self):
-        self.executor.shutdown()
-        self.assertRaises(RuntimeError,
-                          self.executor.submit,
-                          pow, 2, 5)
-
-    def test_interpreter_shutdown(self):
-        # Test the atexit hook for shutdown of worker threads and processes
-        rc, out, err = assert_python_ok('-c', """if 1:
-            from concurrent.futures import {executor_type}
-            from time import sleep
-            from test.test_concurrent_futures import sleep_and_print
-            if __name__ == "__main__":
-                context = '{context}'
-                if context == "":
-                    t = {executor_type}(5)
-                else:
-                    from multiprocessing import get_context
-                    context = get_context(context)
-                    t = {executor_type}(5, mp_context=context)
-                t.submit(sleep_and_print, 1.0, "apple")
-            """.format(executor_type=self.executor_type.__name__,
-                       context=getattr(self, "ctx", "")))
-        # Errors in atexit hooks don't change the process exit code, check
-        # stderr manually.
-        self.assertFalse(err)
-        self.assertEqual(out.strip(), b"apple")
-
-    def test_submit_after_interpreter_shutdown(self):
-        # Test the atexit hook for shutdown of worker threads and processes
-        rc, out, err = assert_python_ok('-c', """if 1:
-            import atexit
-            @atexit.register
-            def run_last():
-                try:
-                    t.submit(id, None)
-                except RuntimeError:
-                    print("runtime-error")
-                    raise
-            from concurrent.futures import {executor_type}
-            if __name__ == "__main__":
-                context = '{context}'
-                if not context:
-                    t = {executor_type}(5)
-                else:
-                    from multiprocessing import get_context
-                    context = get_context(context)
-                    t = {executor_type}(5, mp_context=context)
-                    t.submit(id, 42).result()
-            """.format(executor_type=self.executor_type.__name__,
-                       context=getattr(self, "ctx", "")))
-        # Errors in atexit hooks don't change the process exit code, check
-        # stderr manually.
-        self.assertIn("RuntimeError: cannot schedule new futures", err.decode())
-        self.assertEqual(out.strip(), b"runtime-error")
-
-    def test_hang_issue12364(self):
-        fs = [self.executor.submit(time.sleep, 0.1) for _ in range(50)]
-        self.executor.shutdown()
-        for f in fs:
-            f.result()
-
-    def test_cancel_futures(self):
-        assert self.worker_count <= 5, "test needs few workers"
-        fs = [self.executor.submit(time.sleep, .1) for _ in range(50)]
-        self.executor.shutdown(cancel_futures=True)
-        # We can't guarantee the exact number of cancellations, but we can
-        # guarantee that *some* were cancelled. With few workers, many of
-        # the submitted futures should have been cancelled.
-        cancelled = [fut for fut in fs if fut.cancelled()]
-        self.assertGreater(len(cancelled), 20)
-
-        # Ensure the other futures were able to finish.
-        # Use "not fut.cancelled()" instead of "fut.done()" to include futures
-        # that may have been left in a pending state.
-        others = [fut for fut in fs if not fut.cancelled()]
-        for fut in others:
-            self.assertTrue(fut.done(), msg=f"{fut._state=}")
-            self.assertIsNone(fut.exception())
-
-        # Similar to the number of cancelled futures, we can't guarantee the
-        # exact number that completed. But, we can guarantee that at least
-        # one finished.
-        self.assertGreater(len(others), 0)
-
-    def test_hang_gh83386(self):
-        """shutdown(wait=False) doesn't hang at exit with running futures.
-
-        See https://github.com/python/cpython/issues/83386.
-        """
-        if self.executor_type == futures.ProcessPoolExecutor:
-            raise unittest.SkipTest(
-                "Hangs, see https://github.com/python/cpython/issues/83386")
-
-        rc, out, err = assert_python_ok('-c', """if True:
-            from concurrent.futures import {executor_type}
-            from test.test_concurrent_futures import sleep_and_print
-            if __name__ == "__main__":
-                if {context!r}: multiprocessing.set_start_method({context!r})
-                t = {executor_type}(max_workers=3)
-                t.submit(sleep_and_print, 1.0, "apple")
-                t.shutdown(wait=False)
-            """.format(executor_type=self.executor_type.__name__,
-                       context=getattr(self, 'ctx', None)))
-        self.assertFalse(err)
-        self.assertEqual(out.strip(), b"apple")
-
-    def test_hang_gh94440(self):
-        """shutdown(wait=True) doesn't hang when a future was submitted and
-        quickly canceled right before shutdown.
-
-        See https://github.com/python/cpython/issues/94440.
-        """
-        if not hasattr(signal, 'alarm'):
-            raise unittest.SkipTest(
-                "Tested platform does not support the alarm signal")
-
-        def timeout(_signum, _frame):
-            raise RuntimeError("timed out waiting for shutdown")
-
-        kwargs = {}
-        if getattr(self, 'ctx', None):
-            kwargs['mp_context'] = self.get_context()
-        executor = self.executor_type(max_workers=1, **kwargs)
-        executor.submit(int).result()
-        old_handler = signal.signal(signal.SIGALRM, timeout)
-        try:
-            signal.alarm(5)
-            executor.submit(int).cancel()
-            executor.shutdown(wait=True)
-        finally:
-            signal.alarm(0)
-            signal.signal(signal.SIGALRM, old_handler)
-
-
-class ThreadPoolShutdownTest(ThreadPoolMixin, ExecutorShutdownTest, BaseTestCase):
-    def test_threads_terminate(self):
-        def acquire_lock(lock):
-            lock.acquire()
-
-        sem = threading.Semaphore(0)
-        for i in range(3):
-            self.executor.submit(acquire_lock, sem)
-        self.assertEqual(len(self.executor._threads), 3)
-        for i in range(3):
-            sem.release()
-        self.executor.shutdown()
-        for t in self.executor._threads:
-            t.join()
-
-    def test_context_manager_shutdown(self):
-        with futures.ThreadPoolExecutor(max_workers=5) as e:
-            executor = e
-            self.assertEqual(list(e.map(abs, range(-5, 5))),
-                             [5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
-
-        for t in executor._threads:
-            t.join()
-
-    def test_del_shutdown(self):
-        executor = futures.ThreadPoolExecutor(max_workers=5)
-        res = executor.map(abs, range(-5, 5))
-        threads = executor._threads
-        del executor
-
-        for t in threads:
-            t.join()
-
-        # Make sure the results were all computed before the
-        # executor got shutdown.
-        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
-
-    def test_shutdown_no_wait(self):
-        # Ensure that the executor cleans up the threads when calling
-        # shutdown with wait=False
-        executor = futures.ThreadPoolExecutor(max_workers=5)
-        res = executor.map(abs, range(-5, 5))
-        threads = executor._threads
-        executor.shutdown(wait=False)
-        for t in threads:
-            t.join()
-
-        # Make sure the results were all computed before the
-        # executor got shutdown.
-        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
-
-
-    def test_thread_names_assigned(self):
-        executor = futures.ThreadPoolExecutor(
-            max_workers=5, thread_name_prefix='SpecialPool')
-        executor.map(abs, range(-5, 5))
-        threads = executor._threads
-        del executor
-        support.gc_collect()  # For PyPy or other GCs.
-
-        for t in threads:
-            self.assertRegex(t.name, r'^SpecialPool_[0-4]$')
-            t.join()
-
-    def test_thread_names_default(self):
-        executor = futures.ThreadPoolExecutor(max_workers=5)
-        executor.map(abs, range(-5, 5))
-        threads = executor._threads
-        del executor
-        support.gc_collect()  # For PyPy or other GCs.
-
-        for t in threads:
-            # Ensure that our default name is reasonably sane and unique when
-            # no thread_name_prefix was supplied.
-            self.assertRegex(t.name, r'ThreadPoolExecutor-\d+_[0-4]$')
-            t.join()
-
-    def test_cancel_futures_wait_false(self):
-        # Can only be reliably tested for TPE, since PPE often hangs with
-        # `wait=False` (even without *cancel_futures*).
-        rc, out, err = assert_python_ok('-c', """if True:
-            from concurrent.futures import ThreadPoolExecutor
-            from test.test_concurrent_futures import sleep_and_print
-            if __name__ == "__main__":
-                t = ThreadPoolExecutor()
-                t.submit(sleep_and_print, .1, "apple")
-                t.shutdown(wait=False, cancel_futures=True)
-            """)
-        # Errors in atexit hooks don't change the process exit code, check
-        # stderr manually.
-        self.assertFalse(err)
-        self.assertEqual(out.strip(), b"apple")
-
-
-class ProcessPoolShutdownTest(ExecutorShutdownTest):
-    def test_processes_terminate(self):
-        def acquire_lock(lock):
-            lock.acquire()
-
-        mp_context = self.get_context()
-        if mp_context.get_start_method(allow_none=False) == "fork":
-            # fork pre-spawns, not on demand.
-            expected_num_processes = self.worker_count
-        else:
-            expected_num_processes = 3
-
-        sem = mp_context.Semaphore(0)
-        for _ in range(3):
-            self.executor.submit(acquire_lock, sem)
-        self.assertEqual(len(self.executor._processes), expected_num_processes)
-        for _ in range(3):
-            sem.release()
-        processes = self.executor._processes
-        self.executor.shutdown()
-
-        for p in processes.values():
-            p.join()
-
-    def test_context_manager_shutdown(self):
-        with futures.ProcessPoolExecutor(
-                max_workers=5, mp_context=self.get_context()) as e:
-            processes = e._processes
-            self.assertEqual(list(e.map(abs, range(-5, 5))),
-                             [5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
-
-        for p in processes.values():
-            p.join()
-
-    def test_del_shutdown(self):
-        executor = futures.ProcessPoolExecutor(
-                max_workers=5, mp_context=self.get_context())
-        res = executor.map(abs, range(-5, 5))
-        executor_manager_thread = executor._executor_manager_thread
-        processes = executor._processes
-        call_queue = executor._call_queue
-        executor_manager_thread = executor._executor_manager_thread
-        del executor
-        support.gc_collect()  # For PyPy or other GCs.
-
-        # Make sure that all the executor resources were properly cleaned by
-        # the shutdown process
-        executor_manager_thread.join()
-        for p in processes.values():
-            p.join()
-        call_queue.join_thread()
-
-        # Make sure the results were all computed before the
-        # executor got shutdown.
-        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
-
-    def test_shutdown_no_wait(self):
-        # Ensure that the executor cleans up the processes when calling
-        # shutdown with wait=False
-        executor = futures.ProcessPoolExecutor(
-                max_workers=5, mp_context=self.get_context())
-        res = executor.map(abs, range(-5, 5))
-        processes = executor._processes
-        call_queue = executor._call_queue
-        executor_manager_thread = executor._executor_manager_thread
-        executor.shutdown(wait=False)
-
-        # Make sure that all the executor resources were properly cleaned by
-        # the shutdown process
-        executor_manager_thread.join()
-        for p in processes.values():
-            p.join()
-        call_queue.join_thread()
-
-        # Make sure the results were all computed before the executor got
-        # shutdown.
-        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
-
-
-create_executor_tests(ProcessPoolShutdownTest,
-                      executor_mixins=(ProcessPoolForkMixin,
-                                       ProcessPoolForkserverMixin,
-                                       ProcessPoolSpawnMixin))
-
-
-class WaitTests:
-    def test_20369(self):
-        # See https://bugs.python.org/issue20369
-        future = self.executor.submit(time.sleep, 1.5)
-        done, not_done = futures.wait([future, future],
-                            return_when=futures.ALL_COMPLETED)
-        self.assertEqual({future}, done)
-        self.assertEqual(set(), not_done)
-
-
-    def test_first_completed(self):
-        future1 = self.executor.submit(mul, 21, 2)
-        future2 = self.executor.submit(time.sleep, 1.5)
-
-        done, not_done = futures.wait(
-                [CANCELLED_FUTURE, future1, future2],
-                 return_when=futures.FIRST_COMPLETED)
-
-        self.assertEqual(set([future1]), done)
-        self.assertEqual(set([CANCELLED_FUTURE, future2]), not_done)
-
-    def test_first_completed_some_already_completed(self):
-        future1 = self.executor.submit(time.sleep, 1.5)
-
-        finished, pending = futures.wait(
-                 [CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE, future1],
-                 return_when=futures.FIRST_COMPLETED)
-
-        self.assertEqual(
-                set([CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE]),
-                finished)
-        self.assertEqual(set([future1]), pending)
-
-    def test_first_exception(self):
-        future1 = self.executor.submit(mul, 2, 21)
-        future2 = self.executor.submit(sleep_and_raise, 1.5)
-        future3 = self.executor.submit(time.sleep, 3)
-
-        finished, pending = futures.wait(
-                [future1, future2, future3],
-                return_when=futures.FIRST_EXCEPTION)
-
-        self.assertEqual(set([future1, future2]), finished)
-        self.assertEqual(set([future3]), pending)
-
-    def test_first_exception_some_already_complete(self):
-        future1 = self.executor.submit(divmod, 21, 0)
-        future2 = self.executor.submit(time.sleep, 1.5)
-
-        finished, pending = futures.wait(
-                [SUCCESSFUL_FUTURE,
-                 CANCELLED_FUTURE,
-                 CANCELLED_AND_NOTIFIED_FUTURE,
-                 future1, future2],
-                return_when=futures.FIRST_EXCEPTION)
-
-        self.assertEqual(set([SUCCESSFUL_FUTURE,
-                              CANCELLED_AND_NOTIFIED_FUTURE,
-                              future1]), finished)
-        self.assertEqual(set([CANCELLED_FUTURE, future2]), pending)
-
-    def test_first_exception_one_already_failed(self):
-        future1 = self.executor.submit(time.sleep, 2)
-
-        finished, pending = futures.wait(
-                 [EXCEPTION_FUTURE, future1],
-                 return_when=futures.FIRST_EXCEPTION)
-
-        self.assertEqual(set([EXCEPTION_FUTURE]), finished)
-        self.assertEqual(set([future1]), pending)
-
-    def test_all_completed(self):
-        future1 = self.executor.submit(divmod, 2, 0)
-        future2 = self.executor.submit(mul, 2, 21)
-
-        finished, pending = futures.wait(
-                [SUCCESSFUL_FUTURE,
-                 CANCELLED_AND_NOTIFIED_FUTURE,
-                 EXCEPTION_FUTURE,
-                 future1,
-                 future2],
-                return_when=futures.ALL_COMPLETED)
-
-        self.assertEqual(set([SUCCESSFUL_FUTURE,
-                              CANCELLED_AND_NOTIFIED_FUTURE,
-                              EXCEPTION_FUTURE,
-                              future1,
-                              future2]), finished)
-        self.assertEqual(set(), pending)
-
-    def test_timeout(self):
-        future1 = self.executor.submit(mul, 6, 7)
-        future2 = self.executor.submit(time.sleep, 6)
-
-        finished, pending = futures.wait(
-                [CANCELLED_AND_NOTIFIED_FUTURE,
-                 EXCEPTION_FUTURE,
-                 SUCCESSFUL_FUTURE,
-                 future1, future2],
-                timeout=5,
-                return_when=futures.ALL_COMPLETED)
-
-        self.assertEqual(set([CANCELLED_AND_NOTIFIED_FUTURE,
-                              EXCEPTION_FUTURE,
-                              SUCCESSFUL_FUTURE,
-                              future1]), finished)
-        self.assertEqual(set([future2]), pending)
-
-
-class ThreadPoolWaitTests(ThreadPoolMixin, WaitTests, BaseTestCase):
-
-    def test_pending_calls_race(self):
-        # Issue #14406: multi-threaded race condition when waiting on all
-        # futures.
-        event = threading.Event()
-        def future_func():
-            event.wait()
-        oldswitchinterval = sys.getswitchinterval()
-        sys.setswitchinterval(1e-6)
-        try:
-            fs = {self.executor.submit(future_func) for i in range(100)}
-            event.set()
-            futures.wait(fs, return_when=futures.ALL_COMPLETED)
-        finally:
-            sys.setswitchinterval(oldswitchinterval)
-
-
-create_executor_tests(WaitTests,
-                      executor_mixins=(ProcessPoolForkMixin,
-                                       ProcessPoolForkserverMixin,
-                                       ProcessPoolSpawnMixin))
-
-
-class AsCompletedTests:
-    def test_no_timeout(self):
-        future1 = self.executor.submit(mul, 2, 21)
-        future2 = self.executor.submit(mul, 7, 6)
-
-        completed = set(futures.as_completed(
-                [CANCELLED_AND_NOTIFIED_FUTURE,
-                 EXCEPTION_FUTURE,
-                 SUCCESSFUL_FUTURE,
-                 future1, future2]))
-        self.assertEqual(set(
-                [CANCELLED_AND_NOTIFIED_FUTURE,
-                 EXCEPTION_FUTURE,
-                 SUCCESSFUL_FUTURE,
-                 future1, future2]),
-                completed)
-
-    def test_future_times_out(self):
-        """Test ``futures.as_completed`` timing out before
-        completing it's final future."""
-        already_completed = {CANCELLED_AND_NOTIFIED_FUTURE,
-                             EXCEPTION_FUTURE,
-                             SUCCESSFUL_FUTURE}
-
-        for timeout in (0, 0.01):
-            with self.subTest(timeout):
-
-                future = self.executor.submit(time.sleep, 0.1)
-                completed_futures = set()
-                try:
-                    for f in futures.as_completed(
-                        already_completed | {future},
-                        timeout
-                    ):
-                        completed_futures.add(f)
-                except futures.TimeoutError:
-                    pass
-
-                # Check that ``future`` wasn't completed.
-                self.assertEqual(completed_futures, already_completed)
-
-    def test_duplicate_futures(self):
-        # Issue 20367. Duplicate futures should not raise exceptions or give
-        # duplicate responses.
-        # Issue #31641: accept arbitrary iterables.
-        future1 = self.executor.submit(time.sleep, 2)
-        completed = [
-            f for f in futures.as_completed(itertools.repeat(future1, 3))
-        ]
-        self.assertEqual(len(completed), 1)
-
-    def test_free_reference_yielded_future(self):
-        # Issue #14406: Generator should not keep references
-        # to finished futures.
-        futures_list = [Future() for _ in range(8)]
-        futures_list.append(create_future(state=CANCELLED_AND_NOTIFIED))
-        futures_list.append(create_future(state=FINISHED, result=42))
-
-        with self.assertRaises(futures.TimeoutError):
-            for future in futures.as_completed(futures_list, timeout=0):
-                futures_list.remove(future)
-                wr = weakref.ref(future)
-                del future
-                support.gc_collect()  # For PyPy or other GCs.
-                self.assertIsNone(wr())
-
-        futures_list[0].set_result("test")
-        for future in futures.as_completed(futures_list):
-            futures_list.remove(future)
-            wr = weakref.ref(future)
-            del future
-            support.gc_collect()  # For PyPy or other GCs.
-            self.assertIsNone(wr())
-            if futures_list:
-                futures_list[0].set_result("test")
-
-    def test_correct_timeout_exception_msg(self):
-        futures_list = [CANCELLED_AND_NOTIFIED_FUTURE, PENDING_FUTURE,
-                        RUNNING_FUTURE, SUCCESSFUL_FUTURE]
-
-        with self.assertRaises(futures.TimeoutError) as cm:
-            list(futures.as_completed(futures_list, timeout=0))
-
-        self.assertEqual(str(cm.exception), '2 (of 4) futures unfinished')
-
-
-create_executor_tests(AsCompletedTests)
-
-
-class ExecutorTest:
-    # Executor.shutdown() and context manager usage is tested by
-    # ExecutorShutdownTest.
-    def test_submit(self):
-        future = self.executor.submit(pow, 2, 8)
-        self.assertEqual(256, future.result())
-
-    def test_submit_keyword(self):
-        future = self.executor.submit(mul, 2, y=8)
-        self.assertEqual(16, future.result())
-        future = self.executor.submit(capture, 1, self=2, fn=3)
-        self.assertEqual(future.result(), ((1,), {'self': 2, 'fn': 3}))
-        with self.assertRaises(TypeError):
-            self.executor.submit(fn=capture, arg=1)
-        with self.assertRaises(TypeError):
-            self.executor.submit(arg=1)
-
-    def test_map(self):
-        self.assertEqual(
-                list(self.executor.map(pow, range(10), range(10))),
-                list(map(pow, range(10), range(10))))
-
-        self.assertEqual(
-                list(self.executor.map(pow, range(10), range(10), chunksize=3)),
-                list(map(pow, range(10), range(10))))
-
-    def test_map_exception(self):
-        i = self.executor.map(divmod, [1, 1, 1, 1], [2, 3, 0, 5])
-        self.assertEqual(i.__next__(), (0, 1))
-        self.assertEqual(i.__next__(), (0, 1))
-        self.assertRaises(ZeroDivisionError, i.__next__)
-
-    def test_map_timeout(self):
-        results = []
-        try:
-            for i in self.executor.map(time.sleep,
-                                       [0, 0, 6],
-                                       timeout=5):
-                results.append(i)
-        except futures.TimeoutError:
-            pass
-        else:
-            self.fail('expected TimeoutError')
-
-        self.assertEqual([None, None], results)
-
-    def test_shutdown_race_issue12456(self):
-        # Issue #12456: race condition at shutdown where trying to post a
-        # sentinel in the call queue blocks (the queue is full while processes
-        # have exited).
-        self.executor.map(str, [2] * (self.worker_count + 1))
-        self.executor.shutdown()
-
-    @support.cpython_only
-    def test_no_stale_references(self):
-        # Issue #16284: check that the executors don't unnecessarily hang onto
-        # references.
-        my_object = MyObject()
-        my_object_collected = threading.Event()
-        my_object_callback = weakref.ref(
-            my_object, lambda obj: my_object_collected.set())
-        # Deliberately discarding the future.
-        self.executor.submit(my_object.my_method)
-        del my_object
-
-        collected = my_object_collected.wait(timeout=support.SHORT_TIMEOUT)
-        self.assertTrue(collected,
-                        "Stale reference not collected within timeout.")
-
-    def test_max_workers_negative(self):
-        for number in (0, -1):
-            with self.assertRaisesRegex(ValueError,
-                                        "max_workers must be greater "
-                                        "than 0"):
-                self.executor_type(max_workers=number)
-
-    def test_free_reference(self):
-        # Issue #14406: Result iterator should not keep an internal
-        # reference to result objects.
-        for obj in self.executor.map(make_dummy_object, range(10)):
-            wr = weakref.ref(obj)
-            del obj
-            support.gc_collect()  # For PyPy or other GCs.
-            self.assertIsNone(wr())
-
-
-class ThreadPoolExecutorTest(ThreadPoolMixin, ExecutorTest, BaseTestCase):
-    def test_map_submits_without_iteration(self):
-        """Tests verifying issue 11777."""
-        finished = []
-        def record_finished(n):
-            finished.append(n)
-
-        self.executor.map(record_finished, range(10))
-        self.executor.shutdown(wait=True)
-        self.assertCountEqual(finished, range(10))
-
-    def test_default_workers(self):
-        executor = self.executor_type()
-        expected = min(32, (os.cpu_count() or 1) + 4)
-        self.assertEqual(executor._max_workers, expected)
-
-    def test_saturation(self):
-        executor = self.executor_type(4)
-        def acquire_lock(lock):
-            lock.acquire()
-
-        sem = threading.Semaphore(0)
-        for i in range(15 * executor._max_workers):
-            executor.submit(acquire_lock, sem)
-        self.assertEqual(len(executor._threads), executor._max_workers)
-        for i in range(15 * executor._max_workers):
-            sem.release()
-        executor.shutdown(wait=True)
-
-    def test_idle_thread_reuse(self):
-        executor = self.executor_type()
-        executor.submit(mul, 21, 2).result()
-        executor.submit(mul, 6, 7).result()
-        executor.submit(mul, 3, 14).result()
-        self.assertEqual(len(executor._threads), 1)
-        executor.shutdown(wait=True)
-
-    @unittest.skipUnless(hasattr(os, 'register_at_fork'), 'need os.register_at_fork')
-    def test_hang_global_shutdown_lock(self):
-        # bpo-45021: _global_shutdown_lock should be reinitialized in the child
-        # process, otherwise it will never exit
-        def submit(pool):
-            pool.submit(submit, pool)
-
-        with futures.ThreadPoolExecutor(1) as pool:
-            pool.submit(submit, pool)
-
-            for _ in range(50):
-                with futures.ProcessPoolExecutor(1, mp_context=mp.get_context('fork')) as workers:
-                    workers.submit(tuple)
-
-    def test_executor_map_current_future_cancel(self):
-        stop_event = threading.Event()
-        log = []
-
-        def log_n_wait(ident):
-            log.append(f"{ident=} started")
-            try:
-                stop_event.wait()
-            finally:
-                log.append(f"{ident=} stopped")
-
-        with self.executor_type(max_workers=1) as pool:
-            # submit work to saturate the pool
-            fut = pool.submit(log_n_wait, ident="first")
-            try:
-                with contextlib.closing(
-                    pool.map(log_n_wait, ["second", "third"], timeout=0)
-                ) as gen:
-                    with self.assertRaises(TimeoutError):
-                        next(gen)
-            finally:
-                stop_event.set()
-            fut.result()
-        # ident='second' is cancelled as a result of raising a TimeoutError
-        # ident='third' is cancelled because it remained in the collection of futures
-        self.assertListEqual(log, ["ident='first' started", "ident='first' stopped"])
-
-
-class ProcessPoolExecutorTest(ExecutorTest):
-
-    @unittest.skipUnless(sys.platform=='win32', 'Windows-only process limit')
-    def test_max_workers_too_large(self):
-        with self.assertRaisesRegex(ValueError,
-                                    "max_workers must be <= 61"):
-            futures.ProcessPoolExecutor(max_workers=62)
-
-    def test_killed_child(self):
-        # When a child process is abruptly terminated, the whole pool gets
-        # "broken".
-        futures = [self.executor.submit(time.sleep, 3)]
-        # Get one of the processes, and terminate (kill) it
-        p = next(iter(self.executor._processes.values()))
-        p.terminate()
-        for fut in futures:
-            self.assertRaises(BrokenProcessPool, fut.result)
-        # Submitting other jobs fails as well.
-        self.assertRaises(BrokenProcessPool, self.executor.submit, pow, 2, 8)
-
-    def test_map_chunksize(self):
-        def bad_map():
-            list(self.executor.map(pow, range(40), range(40), chunksize=-1))
-
-        ref = list(map(pow, range(40), range(40)))
-        self.assertEqual(
-            list(self.executor.map(pow, range(40), range(40), chunksize=6)),
-            ref)
-        self.assertEqual(
-            list(self.executor.map(pow, range(40), range(40), chunksize=50)),
-            ref)
-        self.assertEqual(
-            list(self.executor.map(pow, range(40), range(40), chunksize=40)),
-            ref)
-        self.assertRaises(ValueError, bad_map)
-
-    @classmethod
-    def _test_traceback(cls):
-        raise RuntimeError(123) # some comment
-
-    def test_traceback(self):
-        # We want ensure that the traceback from the child process is
-        # contained in the traceback raised in the main process.
-        future = self.executor.submit(self._test_traceback)
-        with self.assertRaises(Exception) as cm:
-            future.result()
-
-        exc = cm.exception
-        self.assertIs(type(exc), RuntimeError)
-        self.assertEqual(exc.args, (123,))
-        cause = exc.__cause__
-        self.assertIs(type(cause), futures.process._RemoteTraceback)
-        self.assertIn('raise RuntimeError(123) # some comment', cause.tb)
-
-        with support.captured_stderr() as f1:
-            try:
-                raise exc
-            except RuntimeError:
-                sys.excepthook(*sys.exc_info())
-        self.assertIn('raise RuntimeError(123) # some comment',
-                      f1.getvalue())
-
-    @hashlib_helper.requires_hashdigest('md5')
-    def test_ressources_gced_in_workers(self):
-        # Ensure that argument for a job are correctly gc-ed after the job
-        # is finished
-        mgr = self.get_context().Manager()
-        obj = EventfulGCObj(mgr)
-        future = self.executor.submit(id, obj)
-        future.result()
-
-        self.assertTrue(obj.event.wait(timeout=1))
-
-        # explicitly destroy the object to ensure that EventfulGCObj.__del__()
-        # is called while manager is still running.
-        obj = None
-        support.gc_collect()
-
-        mgr.shutdown()
-        mgr.join()
-
-    def test_saturation(self):
-        executor = self.executor
-        mp_context = self.get_context()
-        sem = mp_context.Semaphore(0)
-        job_count = 15 * executor._max_workers
-        for _ in range(job_count):
-            executor.submit(sem.acquire)
-        self.assertEqual(len(executor._processes), executor._max_workers)
-        for _ in range(job_count):
-            sem.release()
-
-    def test_idle_process_reuse_one(self):
-        executor = self.executor
-        assert executor._max_workers >= 4
-        if self.get_context().get_start_method(allow_none=False) == "fork":
-            raise unittest.SkipTest("Incompatible with the fork start method.")
-        executor.submit(mul, 21, 2).result()
-        executor.submit(mul, 6, 7).result()
-        executor.submit(mul, 3, 14).result()
-        self.assertEqual(len(executor._processes), 1)
-
-    def test_idle_process_reuse_multiple(self):
-        executor = self.executor
-        assert executor._max_workers <= 5
-        if self.get_context().get_start_method(allow_none=False) == "fork":
-            raise unittest.SkipTest("Incompatible with the fork start method.")
-        executor.submit(mul, 12, 7).result()
-        executor.submit(mul, 33, 25)
-        executor.submit(mul, 25, 26).result()
-        executor.submit(mul, 18, 29)
-        executor.submit(mul, 1, 2).result()
-        executor.submit(mul, 0, 9)
-        self.assertLessEqual(len(executor._processes), 3)
-        executor.shutdown()
-
-    def test_max_tasks_per_child(self):
-        context = self.get_context()
-        if context.get_start_method(allow_none=False) == "fork":
-            with self.assertRaises(ValueError):
-                self.executor_type(1, mp_context=context, max_tasks_per_child=3)
-            return
-        # not using self.executor as we need to control construction.
-        # arguably this could go in another class w/o that mixin.
-        executor = self.executor_type(
-                1, mp_context=context, max_tasks_per_child=3)
-        f1 = executor.submit(os.getpid)
-        original_pid = f1.result()
-        # The worker pid remains the same as the worker could be reused
-        f2 = executor.submit(os.getpid)
-        self.assertEqual(f2.result(), original_pid)
-        self.assertEqual(len(executor._processes), 1)
-        f3 = executor.submit(os.getpid)
-        self.assertEqual(f3.result(), original_pid)
-
-        # A new worker is spawned, with a statistically different pid,
-        # while the previous was reaped.
-        f4 = executor.submit(os.getpid)
-        new_pid = f4.result()
-        self.assertNotEqual(original_pid, new_pid)
-        self.assertEqual(len(executor._processes), 1)
-
-        executor.shutdown()
-
-    def test_max_tasks_per_child_defaults_to_spawn_context(self):
-        # not using self.executor as we need to control construction.
-        # arguably this could go in another class w/o that mixin.
-        executor = self.executor_type(1, max_tasks_per_child=3)
-        self.assertEqual(executor._mp_context.get_start_method(), "spawn")
-
-    def test_max_tasks_early_shutdown(self):
-        context = self.get_context()
-        if context.get_start_method(allow_none=False) == "fork":
-            raise unittest.SkipTest("Incompatible with the fork start method.")
-        # not using self.executor as we need to control construction.
-        # arguably this could go in another class w/o that mixin.
-        executor = self.executor_type(
-                3, mp_context=context, max_tasks_per_child=1)
-        futures = []
-        for i in range(6):
-            futures.append(executor.submit(mul, i, i))
-        executor.shutdown()
-        for i, future in enumerate(futures):
-            self.assertEqual(future.result(), mul(i, i))
-
-
-create_executor_tests(ProcessPoolExecutorTest,
-                      executor_mixins=(ProcessPoolForkMixin,
-                                       ProcessPoolForkserverMixin,
-                                       ProcessPoolSpawnMixin))
-
-def _crash(delay=None):
-    """Induces a segfault."""
-    if delay:
-        time.sleep(delay)
-    import faulthandler
-    faulthandler.disable()
-    faulthandler._sigsegv()
-
-
-def _exit():
-    """Induces a sys exit with exitcode 1."""
-    sys.exit(1)
-
-
-def _raise_error(Err):
-    """Function that raises an Exception in process."""
-    raise Err()
-
-
-def _raise_error_ignore_stderr(Err):
-    """Function that raises an Exception in process and ignores stderr."""
-    import io
-    sys.stderr = io.StringIO()
-    raise Err()
-
-
-def _return_instance(cls):
-    """Function that returns a instance of cls."""
-    return cls()
-
-
-class CrashAtPickle(object):
-    """Bad object that triggers a segfault at pickling time."""
-    def __reduce__(self):
-        _crash()
-
-
-class CrashAtUnpickle(object):
-    """Bad object that triggers a segfault at unpickling time."""
-    def __reduce__(self):
-        return _crash, ()
-
-
-class ExitAtPickle(object):
-    """Bad object that triggers a process exit at pickling time."""
-    def __reduce__(self):
-        _exit()
-
-
-class ExitAtUnpickle(object):
-    """Bad object that triggers a process exit at unpickling time."""
-    def __reduce__(self):
-        return _exit, ()
-
-
-class ErrorAtPickle(object):
-    """Bad object that triggers an error at pickling time."""
-    def __reduce__(self):
-        from pickle import PicklingError
-        raise PicklingError("Error in pickle")
-
-
-class ErrorAtUnpickle(object):
-    """Bad object that triggers an error at unpickling time."""
-    def __reduce__(self):
-        from pickle import UnpicklingError
-        return _raise_error_ignore_stderr, (UnpicklingError, )
-
-
-class ExecutorDeadlockTest:
-    TIMEOUT = support.SHORT_TIMEOUT
-
-    def _fail_on_deadlock(self, executor):
-        # If we did not recover before TIMEOUT seconds, consider that the
-        # executor is in a deadlock state and forcefully clean all its
-        # composants.
-        import faulthandler
-        from tempfile import TemporaryFile
-        with TemporaryFile(mode="w+") as f:
-            faulthandler.dump_traceback(file=f)
-            f.seek(0)
-            tb = f.read()
-        for p in executor._processes.values():
-            p.terminate()
-        # This should be safe to call executor.shutdown here as all possible
-        # deadlocks should have been broken.
-        executor.shutdown(wait=True)
-        print(f"\nTraceback:\n {tb}", file=sys.__stderr__)
-        self.fail(f"Executor deadlock:\n\n{tb}")
-
-
-    def _check_crash(self, error, func, *args, ignore_stderr=False):
-        # test for deadlock caused by crashes in a pool
-        self.executor.shutdown(wait=True)
-
-        executor = self.executor_type(
-            max_workers=2, mp_context=self.get_context())
-        res = executor.submit(func, *args)
-
-        if ignore_stderr:
-            cm = support.captured_stderr()
-        else:
-            cm = contextlib.nullcontext()
-
-        try:
-            with self.assertRaises(error):
-                with cm:
-                    res.result(timeout=self.TIMEOUT)
-        except futures.TimeoutError:
-            # If we did not recover before TIMEOUT seconds,
-            # consider that the executor is in a deadlock state
-            self._fail_on_deadlock(executor)
-        executor.shutdown(wait=True)
-
-    def test_error_at_task_pickle(self):
-        # Check problem occurring while pickling a task in
-        # the task_handler thread
-        self._check_crash(PicklingError, id, ErrorAtPickle())
-
-    def test_exit_at_task_unpickle(self):
-        # Check problem occurring while unpickling a task on workers
-        self._check_crash(BrokenProcessPool, id, ExitAtUnpickle())
-
-    def test_error_at_task_unpickle(self):
-        # Check problem occurring while unpickling a task on workers
-        self._check_crash(BrokenProcessPool, id, ErrorAtUnpickle())
-
-    def test_crash_at_task_unpickle(self):
-        # Check problem occurring while unpickling a task on workers
-        self._check_crash(BrokenProcessPool, id, CrashAtUnpickle())
-
-    def test_crash_during_func_exec_on_worker(self):
-        # Check problem occurring during func execution on workers
-        self._check_crash(BrokenProcessPool, _crash)
-
-    def test_exit_during_func_exec_on_worker(self):
-        # Check problem occurring during func execution on workers
-        self._check_crash(SystemExit, _exit)
-
-    def test_error_during_func_exec_on_worker(self):
-        # Check problem occurring during func execution on workers
-        self._check_crash(RuntimeError, _raise_error, RuntimeError)
-
-    def test_crash_during_result_pickle_on_worker(self):
-        # Check problem occurring while pickling a task result
-        # on workers
-        self._check_crash(BrokenProcessPool, _return_instance, CrashAtPickle)
-
-    def test_exit_during_result_pickle_on_worker(self):
-        # Check problem occurring while pickling a task result
-        # on workers
-        self._check_crash(SystemExit, _return_instance, ExitAtPickle)
-
-    def test_error_during_result_pickle_on_worker(self):
-        # Check problem occurring while pickling a task result
-        # on workers
-        self._check_crash(PicklingError, _return_instance, ErrorAtPickle)
-
-    def test_error_during_result_unpickle_in_result_handler(self):
-        # Check problem occurring while unpickling a task in
-        # the result_handler thread
-        self._check_crash(BrokenProcessPool,
-                          _return_instance, ErrorAtUnpickle,
-                          ignore_stderr=True)
-
-    def test_exit_during_result_unpickle_in_result_handler(self):
-        # Check problem occurring while unpickling a task in
-        # the result_handler thread
-        self._check_crash(BrokenProcessPool, _return_instance, ExitAtUnpickle)
-
-    def test_shutdown_deadlock(self):
-        # Test that the pool calling shutdown do not cause deadlock
-        # if a worker fails after the shutdown call.
-        self.executor.shutdown(wait=True)
-        with self.executor_type(max_workers=2,
-                                mp_context=self.get_context()) as executor:
-            self.executor = executor  # Allow clean up in fail_on_deadlock
-            f = executor.submit(_crash, delay=.1)
-            executor.shutdown(wait=True)
-            with self.assertRaises(BrokenProcessPool):
-                f.result()
-
-    def test_shutdown_deadlock_pickle(self):
-        # Test that the pool calling shutdown with wait=False does not cause
-        # a deadlock if a task fails at pickle after the shutdown call.
-        # Reported in bpo-39104.
-        self.executor.shutdown(wait=True)
-        with self.executor_type(max_workers=2,
-                                mp_context=self.get_context()) as executor:
-            self.executor = executor  # Allow clean up in fail_on_deadlock
-
-            # Start the executor and get the executor_manager_thread to collect
-            # the threads and avoid dangling thread that should be cleaned up
-            # asynchronously.
-            executor.submit(id, 42).result()
-            executor_manager = executor._executor_manager_thread
-
-            # Submit a task that fails at pickle and shutdown the executor
-            # without waiting
-            f = executor.submit(id, ErrorAtPickle())
-            executor.shutdown(wait=False)
-            with self.assertRaises(PicklingError):
-                f.result()
-
-        # Make sure the executor is eventually shutdown and do not leave
-        # dangling threads
-        executor_manager.join()
-
-
-create_executor_tests(ExecutorDeadlockTest,
-                      executor_mixins=(ProcessPoolForkMixin,
-                                       ProcessPoolForkserverMixin,
-                                       ProcessPoolSpawnMixin))
-
-
-class FutureTests(BaseTestCase):
-    def test_done_callback_with_result(self):
-        callback_result = None
-        def fn(callback_future):
-            nonlocal callback_result
-            callback_result = callback_future.result()
-
-        f = Future()
-        f.add_done_callback(fn)
-        f.set_result(5)
-        self.assertEqual(5, callback_result)
-
-    def test_done_callback_with_exception(self):
-        callback_exception = None
-        def fn(callback_future):
-            nonlocal callback_exception
-            callback_exception = callback_future.exception()
-
-        f = Future()
-        f.add_done_callback(fn)
-        f.set_exception(Exception('test'))
-        self.assertEqual(('test',), callback_exception.args)
-
-    def test_done_callback_with_cancel(self):
-        was_cancelled = None
-        def fn(callback_future):
-            nonlocal was_cancelled
-            was_cancelled = callback_future.cancelled()
-
-        f = Future()
-        f.add_done_callback(fn)
-        self.assertTrue(f.cancel())
-        self.assertTrue(was_cancelled)
-
-    def test_done_callback_raises(self):
-        with support.captured_stderr() as stderr:
-            raising_was_called = False
-            fn_was_called = False
-
-            def raising_fn(callback_future):
-                nonlocal raising_was_called
-                raising_was_called = True
-                raise Exception('doh!')
-
-            def fn(callback_future):
-                nonlocal fn_was_called
-                fn_was_called = True
-
-            f = Future()
-            f.add_done_callback(raising_fn)
-            f.add_done_callback(fn)
-            f.set_result(5)
-            self.assertTrue(raising_was_called)
-            self.assertTrue(fn_was_called)
-            self.assertIn('Exception: doh!', stderr.getvalue())
-
-    def test_done_callback_already_successful(self):
-        callback_result = None
-        def fn(callback_future):
-            nonlocal callback_result
-            callback_result = callback_future.result()
-
-        f = Future()
-        f.set_result(5)
-        f.add_done_callback(fn)
-        self.assertEqual(5, callback_result)
-
-    def test_done_callback_already_failed(self):
-        callback_exception = None
-        def fn(callback_future):
-            nonlocal callback_exception
-            callback_exception = callback_future.exception()
-
-        f = Future()
-        f.set_exception(Exception('test'))
-        f.add_done_callback(fn)
-        self.assertEqual(('test',), callback_exception.args)
-
-    def test_done_callback_already_cancelled(self):
-        was_cancelled = None
-        def fn(callback_future):
-            nonlocal was_cancelled
-            was_cancelled = callback_future.cancelled()
-
-        f = Future()
-        self.assertTrue(f.cancel())
-        f.add_done_callback(fn)
-        self.assertTrue(was_cancelled)
-
-    def test_done_callback_raises_already_succeeded(self):
-        with support.captured_stderr() as stderr:
-            def raising_fn(callback_future):
-                raise Exception('doh!')
-
-            f = Future()
-
-            # Set the result first to simulate a future that runs instantly,
-            # effectively allowing the callback to be run immediately.
-            f.set_result(5)
-            f.add_done_callback(raising_fn)
-
-            self.assertIn('exception calling callback for', stderr.getvalue())
-            self.assertIn('doh!', stderr.getvalue())
-
-
-    def test_repr(self):
-        self.assertRegex(repr(PENDING_FUTURE),
-                         '<Future at 0x[0-9a-f]+ state=pending>')
-        self.assertRegex(repr(RUNNING_FUTURE),
-                         '<Future at 0x[0-9a-f]+ state=running>')
-        self.assertRegex(repr(CANCELLED_FUTURE),
-                         '<Future at 0x[0-9a-f]+ state=cancelled>')
-        self.assertRegex(repr(CANCELLED_AND_NOTIFIED_FUTURE),
-                         '<Future at 0x[0-9a-f]+ state=cancelled>')
-        self.assertRegex(
-                repr(EXCEPTION_FUTURE),
-                '<Future at 0x[0-9a-f]+ state=finished raised OSError>')
-        self.assertRegex(
-                repr(SUCCESSFUL_FUTURE),
-                '<Future at 0x[0-9a-f]+ state=finished returned int>')
-
-
-    def test_cancel(self):
-        f1 = create_future(state=PENDING)
-        f2 = create_future(state=RUNNING)
-        f3 = create_future(state=CANCELLED)
-        f4 = create_future(state=CANCELLED_AND_NOTIFIED)
-        f5 = create_future(state=FINISHED, exception=OSError())
-        f6 = create_future(state=FINISHED, result=5)
-
-        self.assertTrue(f1.cancel())
-        self.assertEqual(f1._state, CANCELLED)
-
-        self.assertFalse(f2.cancel())
-        self.assertEqual(f2._state, RUNNING)
-
-        self.assertTrue(f3.cancel())
-        self.assertEqual(f3._state, CANCELLED)
-
-        self.assertTrue(f4.cancel())
-        self.assertEqual(f4._state, CANCELLED_AND_NOTIFIED)
-
-        self.assertFalse(f5.cancel())
-        self.assertEqual(f5._state, FINISHED)
-
-        self.assertFalse(f6.cancel())
-        self.assertEqual(f6._state, FINISHED)
-
-    def test_cancelled(self):
-        self.assertFalse(PENDING_FUTURE.cancelled())
-        self.assertFalse(RUNNING_FUTURE.cancelled())
-        self.assertTrue(CANCELLED_FUTURE.cancelled())
-        self.assertTrue(CANCELLED_AND_NOTIFIED_FUTURE.cancelled())
-        self.assertFalse(EXCEPTION_FUTURE.cancelled())
-        self.assertFalse(SUCCESSFUL_FUTURE.cancelled())
-
-    def test_done(self):
-        self.assertFalse(PENDING_FUTURE.done())
-        self.assertFalse(RUNNING_FUTURE.done())
-        self.assertTrue(CANCELLED_FUTURE.done())
-        self.assertTrue(CANCELLED_AND_NOTIFIED_FUTURE.done())
-        self.assertTrue(EXCEPTION_FUTURE.done())
-        self.assertTrue(SUCCESSFUL_FUTURE.done())
-
-    def test_running(self):
-        self.assertFalse(PENDING_FUTURE.running())
-        self.assertTrue(RUNNING_FUTURE.running())
-        self.assertFalse(CANCELLED_FUTURE.running())
-        self.assertFalse(CANCELLED_AND_NOTIFIED_FUTURE.running())
-        self.assertFalse(EXCEPTION_FUTURE.running())
-        self.assertFalse(SUCCESSFUL_FUTURE.running())
-
-    def test_result_with_timeout(self):
-        self.assertRaises(futures.TimeoutError,
-                          PENDING_FUTURE.result, timeout=0)
-        self.assertRaises(futures.TimeoutError,
-                          RUNNING_FUTURE.result, timeout=0)
-        self.assertRaises(futures.CancelledError,
-                          CANCELLED_FUTURE.result, timeout=0)
-        self.assertRaises(futures.CancelledError,
-                          CANCELLED_AND_NOTIFIED_FUTURE.result, timeout=0)
-        self.assertRaises(OSError, EXCEPTION_FUTURE.result, timeout=0)
-        self.assertEqual(SUCCESSFUL_FUTURE.result(timeout=0), 42)
-
-    def test_result_with_success(self):
-        # TODO(brian@sweetapp.com): This test is timing dependent.
-        def notification():
-            # Wait until the main thread is waiting for the result.
-            time.sleep(1)
-            f1.set_result(42)
-
-        f1 = create_future(state=PENDING)
-        t = threading.Thread(target=notification)
-        t.start()
-
-        self.assertEqual(f1.result(timeout=5), 42)
-        t.join()
-
-    def test_result_with_cancel(self):
-        # TODO(brian@sweetapp.com): This test is timing dependent.
-        def notification():
-            # Wait until the main thread is waiting for the result.
-            time.sleep(1)
-            f1.cancel()
-
-        f1 = create_future(state=PENDING)
-        t = threading.Thread(target=notification)
-        t.start()
-
-        self.assertRaises(futures.CancelledError,
-                          f1.result, timeout=support.SHORT_TIMEOUT)
-        t.join()
-
-    def test_exception_with_timeout(self):
-        self.assertRaises(futures.TimeoutError,
-                          PENDING_FUTURE.exception, timeout=0)
-        self.assertRaises(futures.TimeoutError,
-                          RUNNING_FUTURE.exception, timeout=0)
-        self.assertRaises(futures.CancelledError,
-                          CANCELLED_FUTURE.exception, timeout=0)
-        self.assertRaises(futures.CancelledError,
-                          CANCELLED_AND_NOTIFIED_FUTURE.exception, timeout=0)
-        self.assertTrue(isinstance(EXCEPTION_FUTURE.exception(timeout=0),
-                                   OSError))
-        self.assertEqual(SUCCESSFUL_FUTURE.exception(timeout=0), None)
-
-    def test_exception_with_success(self):
-        def notification():
-            # Wait until the main thread is waiting for the exception.
-            time.sleep(1)
-            with f1._condition:
-                f1._state = FINISHED
-                f1._exception = OSError()
-                f1._condition.notify_all()
-
-        f1 = create_future(state=PENDING)
-        t = threading.Thread(target=notification)
-        t.start()
-
-        self.assertTrue(isinstance(f1.exception(timeout=support.SHORT_TIMEOUT), OSError))
-        t.join()
-
-    def test_multiple_set_result(self):
-        f = create_future(state=PENDING)
-        f.set_result(1)
-
-        with self.assertRaisesRegex(
-                futures.InvalidStateError,
-                'FINISHED: <Future at 0x[0-9a-f]+ '
-                'state=finished returned int>'
-        ):
-            f.set_result(2)
-
-        self.assertTrue(f.done())
-        self.assertEqual(f.result(), 1)
-
-    def test_multiple_set_exception(self):
-        f = create_future(state=PENDING)
-        e = ValueError()
-        f.set_exception(e)
-
-        with self.assertRaisesRegex(
-                futures.InvalidStateError,
-                'FINISHED: <Future at 0x[0-9a-f]+ '
-                'state=finished raised ValueError>'
-        ):
-            f.set_exception(Exception())
-
-        self.assertEqual(f.exception(), e)
-
-
-def setUpModule():
-    unittest.addModuleCleanup(multiprocessing.util._cleanup_tests)
-    thread_info = threading_helper.threading_setup()
-    unittest.addModuleCleanup(threading_helper.threading_cleanup, *thread_info)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/__init__.py b/Lib/test/test_concurrent_futures/__init__.py
new file mode 100644
index 00000000000000..430fa93aa456a2
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/__init__.py
@@ -0,0 +1,16 @@
+import os.path
+import unittest
+from test import support
+from test.support import import_helper
+
+# Skip tests if _multiprocessing wasn't built.
+import_helper.import_module('_multiprocessing')
+
+if support.check_sanitizer(address=True, memory=True):
+    # gh-90791: Skip the test because it is too slow when Python is built
+    # with ASAN/MSAN: between 5 and 20 minutes on GitHub Actions.
+    raise unittest.SkipTest("test too slow on ASAN/MSAN build")
+
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_concurrent_futures/executor.py b/Lib/test/test_concurrent_futures/executor.py
new file mode 100644
index 00000000000000..1e7d4344740943
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/executor.py
@@ -0,0 +1,108 @@
+import threading
+import time
+import weakref
+from concurrent import futures
+from test import support
+
+
+def mul(x, y):
+    return x * y
+
+def capture(*args, **kwargs):
+    return args, kwargs
+
+
+class MyObject(object):
+    def my_method(self):
+        pass
+
+
+def make_dummy_object(_):
+    return MyObject()
+
+
+class ExecutorTest:
+    # Executor.shutdown() and context manager usage is tested by
+    # ExecutorShutdownTest.
+    def test_submit(self):
+        future = self.executor.submit(pow, 2, 8)
+        self.assertEqual(256, future.result())
+
+    def test_submit_keyword(self):
+        future = self.executor.submit(mul, 2, y=8)
+        self.assertEqual(16, future.result())
+        future = self.executor.submit(capture, 1, self=2, fn=3)
+        self.assertEqual(future.result(), ((1,), {'self': 2, 'fn': 3}))
+        with self.assertRaises(TypeError):
+            self.executor.submit(fn=capture, arg=1)
+        with self.assertRaises(TypeError):
+            self.executor.submit(arg=1)
+
+    def test_map(self):
+        self.assertEqual(
+                list(self.executor.map(pow, range(10), range(10))),
+                list(map(pow, range(10), range(10))))
+
+        self.assertEqual(
+                list(self.executor.map(pow, range(10), range(10), chunksize=3)),
+                list(map(pow, range(10), range(10))))
+
+    def test_map_exception(self):
+        i = self.executor.map(divmod, [1, 1, 1, 1], [2, 3, 0, 5])
+        self.assertEqual(i.__next__(), (0, 1))
+        self.assertEqual(i.__next__(), (0, 1))
+        self.assertRaises(ZeroDivisionError, i.__next__)
+
+    @support.requires_resource('walltime')
+    def test_map_timeout(self):
+        results = []
+        try:
+            for i in self.executor.map(time.sleep,
+                                       [0, 0, 6],
+                                       timeout=5):
+                results.append(i)
+        except futures.TimeoutError:
+            pass
+        else:
+            self.fail('expected TimeoutError')
+
+        self.assertEqual([None, None], results)
+
+    def test_shutdown_race_issue12456(self):
+        # Issue #12456: race condition at shutdown where trying to post a
+        # sentinel in the call queue blocks (the queue is full while processes
+        # have exited).
+        self.executor.map(str, [2] * (self.worker_count + 1))
+        self.executor.shutdown()
+
+    @support.cpython_only
+    def test_no_stale_references(self):
+        # Issue #16284: check that the executors don't unnecessarily hang onto
+        # references.
+        my_object = MyObject()
+        my_object_collected = threading.Event()
+        my_object_callback = weakref.ref(
+            my_object, lambda obj: my_object_collected.set())
+        # Deliberately discarding the future.
+        self.executor.submit(my_object.my_method)
+        del my_object
+
+        collected = my_object_collected.wait(timeout=support.SHORT_TIMEOUT)
+        self.assertTrue(collected,
+                        "Stale reference not collected within timeout.")
+
+    def test_max_workers_negative(self):
+        for number in (0, -1):
+            with self.assertRaisesRegex(ValueError,
+                                        "max_workers must be greater "
+                                        "than 0"):
+                self.executor_type(max_workers=number)
+
+    def test_free_reference(self):
+        # Issue #14406: Result iterator should not keep an internal
+        # reference to result objects.
+        for obj in self.executor.map(make_dummy_object, range(10)):
+            wr = weakref.ref(obj)
+            del obj
+            support.gc_collect()  # For PyPy or other GCs.
+            self.assertIsNone(wr())
diff --git a/Lib/test/test_concurrent_futures/test_as_completed.py b/Lib/test/test_concurrent_futures/test_as_completed.py
new file mode 100644
index 00000000000000..c90b0021d85fc7
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_as_completed.py
@@ -0,0 +1,118 @@
+import itertools
+import time
+import unittest
+import weakref
+from concurrent import futures
+from concurrent.futures._base import (
+    CANCELLED_AND_NOTIFIED, FINISHED, Future)
+
+from test import support
+
+from .util import (
+    PENDING_FUTURE, RUNNING_FUTURE,
+    CANCELLED_AND_NOTIFIED_FUTURE, EXCEPTION_FUTURE, SUCCESSFUL_FUTURE,
+    create_future, create_executor_tests, setup_module)
+
+
+def mul(x, y):
+    return x * y
+
+
+class AsCompletedTests:
+    def test_no_timeout(self):
+        future1 = self.executor.submit(mul, 2, 21)
+        future2 = self.executor.submit(mul, 7, 6)
+
+        completed = set(futures.as_completed(
+                [CANCELLED_AND_NOTIFIED_FUTURE,
+                 EXCEPTION_FUTURE,
+                 SUCCESSFUL_FUTURE,
+                 future1, future2]))
+        self.assertEqual(set(
+                [CANCELLED_AND_NOTIFIED_FUTURE,
+                 EXCEPTION_FUTURE,
+                 SUCCESSFUL_FUTURE,
+                 future1, future2]),
+                completed)
+
+    def test_future_times_out(self):
+        """Test ``futures.as_completed`` timing out before
+        completing it's final future."""
+        already_completed = {CANCELLED_AND_NOTIFIED_FUTURE,
+                             EXCEPTION_FUTURE,
+                             SUCCESSFUL_FUTURE}
+
+        # Windows clock resolution is around 15.6 ms
+        short_timeout = 0.100
+        for timeout in (0, short_timeout):
+            with self.subTest(timeout):
+
+                completed_futures = set()
+                future = self.executor.submit(time.sleep, short_timeout * 10)
+
+                try:
+                    for f in futures.as_completed(
+                        already_completed | {future},
+                        timeout
+                    ):
+                        completed_futures.add(f)
+                except futures.TimeoutError:
+                    pass
+
+                # Check that ``future`` wasn't completed.
+                self.assertEqual(completed_futures, already_completed)
+
+    def test_duplicate_futures(self):
+        # Issue 20367. Duplicate futures should not raise exceptions or give
+        # duplicate responses.
+        # Issue #31641: accept arbitrary iterables.
+        future1 = self.executor.submit(time.sleep, 2)
+        completed = [
+            f for f in futures.as_completed(itertools.repeat(future1, 3))
+        ]
+        self.assertEqual(len(completed), 1)
+
+    def test_free_reference_yielded_future(self):
+        # Issue #14406: Generator should not keep references
+        # to finished futures.
+        futures_list = [Future() for _ in range(8)]
+        futures_list.append(create_future(state=CANCELLED_AND_NOTIFIED))
+        futures_list.append(create_future(state=FINISHED, result=42))
+
+        with self.assertRaises(futures.TimeoutError):
+            for future in futures.as_completed(futures_list, timeout=0):
+                futures_list.remove(future)
+                wr = weakref.ref(future)
+                del future
+                support.gc_collect()  # For PyPy or other GCs.
+                self.assertIsNone(wr())
+
+        futures_list[0].set_result("test")
+        for future in futures.as_completed(futures_list):
+            futures_list.remove(future)
+            wr = weakref.ref(future)
+            del future
+            support.gc_collect()  # For PyPy or other GCs.
+            self.assertIsNone(wr())
+            if futures_list:
+                futures_list[0].set_result("test")
+
+    def test_correct_timeout_exception_msg(self):
+        futures_list = [CANCELLED_AND_NOTIFIED_FUTURE, PENDING_FUTURE,
+                        RUNNING_FUTURE, SUCCESSFUL_FUTURE]
+
+        with self.assertRaises(futures.TimeoutError) as cm:
+            list(futures.as_completed(futures_list, timeout=0))
+
+        self.assertEqual(str(cm.exception), '2 (of 4) futures unfinished')
+
+
+create_executor_tests(globals(), AsCompletedTests)
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_deadlock.py b/Lib/test/test_concurrent_futures/test_deadlock.py
new file mode 100644
index 00000000000000..3c30c4558c0b3e
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_deadlock.py
@@ -0,0 +1,332 @@
+import contextlib
+import queue
+import signal
+import sys
+import time
+import unittest
+import unittest.mock
+from pickle import PicklingError
+from concurrent import futures
+from concurrent.futures.process import BrokenProcessPool, _ThreadWakeup
+
+from test import support
+
+from .util import (
+    create_executor_tests, setup_module,
+    ProcessPoolForkMixin, ProcessPoolForkserverMixin, ProcessPoolSpawnMixin)
+
+
+def _crash(delay=None):
+    """Induces a segfault."""
+    if delay:
+        time.sleep(delay)
+    import faulthandler
+    faulthandler.disable()
+    faulthandler._sigsegv()
+
+
+def _crash_with_data(data):
+    """Induces a segfault with dummy data in input."""
+    _crash()
+
+
+def _exit():
+    """Induces a sys exit with exitcode 1."""
+    sys.exit(1)
+
+
+def _raise_error(Err):
+    """Function that raises an Exception in process."""
+    raise Err()
+
+
+def _raise_error_ignore_stderr(Err):
+    """Function that raises an Exception in process and ignores stderr."""
+    import io
+    sys.stderr = io.StringIO()
+    raise Err()
+
+
+def _return_instance(cls):
+    """Function that returns a instance of cls."""
+    return cls()
+
+
+class CrashAtPickle(object):
+    """Bad object that triggers a segfault at pickling time."""
+    def __reduce__(self):
+        _crash()
+
+
+class CrashAtUnpickle(object):
+    """Bad object that triggers a segfault at unpickling time."""
+    def __reduce__(self):
+        return _crash, ()
+
+
+class ExitAtPickle(object):
+    """Bad object that triggers a process exit at pickling time."""
+    def __reduce__(self):
+        _exit()
+
+
+class ExitAtUnpickle(object):
+    """Bad object that triggers a process exit at unpickling time."""
+    def __reduce__(self):
+        return _exit, ()
+
+
+class ErrorAtPickle(object):
+    """Bad object that triggers an error at pickling time."""
+    def __reduce__(self):
+        from pickle import PicklingError
+        raise PicklingError("Error in pickle")
+
+
+class ErrorAtUnpickle(object):
+    """Bad object that triggers an error at unpickling time."""
+    def __reduce__(self):
+        from pickle import UnpicklingError
+        return _raise_error_ignore_stderr, (UnpicklingError, )
+
+
+class ExecutorDeadlockTest:
+    TIMEOUT = support.LONG_TIMEOUT
+
+    def _fail_on_deadlock(self, executor):
+        # If we did not recover before TIMEOUT seconds, consider that the
+        # executor is in a deadlock state and forcefully clean all its
+        # composants.
+        import faulthandler
+        from tempfile import TemporaryFile
+        with TemporaryFile(mode="w+") as f:
+            faulthandler.dump_traceback(file=f)
+            f.seek(0)
+            tb = f.read()
+        for p in executor._processes.values():
+            p.terminate()
+        # This should be safe to call executor.shutdown here as all possible
+        # deadlocks should have been broken.
+        executor.shutdown(wait=True)
+        print(f"\nTraceback:\n {tb}", file=sys.__stderr__)
+        self.fail(f"Executor deadlock:\n\n{tb}")
+
+
+    def _check_crash(self, error, func, *args, ignore_stderr=False):
+        # test for deadlock caused by crashes in a pool
+        self.executor.shutdown(wait=True)
+
+        executor = self.executor_type(
+            max_workers=2, mp_context=self.get_context())
+        res = executor.submit(func, *args)
+
+        if ignore_stderr:
+            cm = support.captured_stderr()
+        else:
+            cm = contextlib.nullcontext()
+
+        try:
+            with self.assertRaises(error):
+                with cm:
+                    res.result(timeout=self.TIMEOUT)
+        except futures.TimeoutError:
+            # If we did not recover before TIMEOUT seconds,
+            # consider that the executor is in a deadlock state
+            self._fail_on_deadlock(executor)
+        executor.shutdown(wait=True)
+
+    def test_error_at_task_pickle(self):
+        # Check problem occurring while pickling a task in
+        # the task_handler thread
+        self._check_crash(PicklingError, id, ErrorAtPickle())
+
+    def test_exit_at_task_unpickle(self):
+        # Check problem occurring while unpickling a task on workers
+        self._check_crash(BrokenProcessPool, id, ExitAtUnpickle())
+
+    def test_error_at_task_unpickle(self):
+        # gh-109832: Restore stderr overriden by _raise_error_ignore_stderr()
+        self.addCleanup(setattr, sys, 'stderr', sys.stderr)
+
+        # Check problem occurring while unpickling a task on workers
+        self._check_crash(BrokenProcessPool, id, ErrorAtUnpickle())
+
+    def test_crash_at_task_unpickle(self):
+        # Check problem occurring while unpickling a task on workers
+        self._check_crash(BrokenProcessPool, id, CrashAtUnpickle())
+
+    def test_crash_during_func_exec_on_worker(self):
+        # Check problem occurring during func execution on workers
+        self._check_crash(BrokenProcessPool, _crash)
+
+    def test_exit_during_func_exec_on_worker(self):
+        # Check problem occurring during func execution on workers
+        self._check_crash(SystemExit, _exit)
+
+    def test_error_during_func_exec_on_worker(self):
+        # Check problem occurring during func execution on workers
+        self._check_crash(RuntimeError, _raise_error, RuntimeError)
+
+    def test_crash_during_result_pickle_on_worker(self):
+        # Check problem occurring while pickling a task result
+        # on workers
+        self._check_crash(BrokenProcessPool, _return_instance, CrashAtPickle)
+
+    def test_exit_during_result_pickle_on_worker(self):
+        # Check problem occurring while pickling a task result
+        # on workers
+        self._check_crash(SystemExit, _return_instance, ExitAtPickle)
+
+    def test_error_during_result_pickle_on_worker(self):
+        # Check problem occurring while pickling a task result
+        # on workers
+        self._check_crash(PicklingError, _return_instance, ErrorAtPickle)
+
+    def test_error_during_result_unpickle_in_result_handler(self):
+        # gh-109832: Restore stderr overriden by _raise_error_ignore_stderr()
+        self.addCleanup(setattr, sys, 'stderr', sys.stderr)
+
+        # Check problem occurring while unpickling a task in
+        # the result_handler thread
+        self._check_crash(BrokenProcessPool,
+                          _return_instance, ErrorAtUnpickle,
+                          ignore_stderr=True)
+
+    def test_exit_during_result_unpickle_in_result_handler(self):
+        # Check problem occurring while unpickling a task in
+        # the result_handler thread
+        self._check_crash(BrokenProcessPool, _return_instance, ExitAtUnpickle)
+
+    def test_shutdown_deadlock(self):
+        # Test that the pool calling shutdown do not cause deadlock
+        # if a worker fails after the shutdown call.
+        self.executor.shutdown(wait=True)
+        with self.executor_type(max_workers=2,
+                                mp_context=self.get_context()) as executor:
+            self.executor = executor  # Allow clean up in fail_on_deadlock
+            f = executor.submit(_crash, delay=.1)
+            executor.shutdown(wait=True)
+            with self.assertRaises(BrokenProcessPool):
+                f.result()
+
+    def test_shutdown_deadlock_pickle(self):
+        # Test that the pool calling shutdown with wait=False does not cause
+        # a deadlock if a task fails at pickle after the shutdown call.
+        # Reported in bpo-39104.
+        self.executor.shutdown(wait=True)
+        with self.executor_type(max_workers=2,
+                                mp_context=self.get_context()) as executor:
+            self.executor = executor  # Allow clean up in fail_on_deadlock
+
+            # Start the executor and get the executor_manager_thread to collect
+            # the threads and avoid dangling thread that should be cleaned up
+            # asynchronously.
+            executor.submit(id, 42).result()
+            executor_manager = executor._executor_manager_thread
+
+            # Submit a task that fails at pickle and shutdown the executor
+            # without waiting
+            f = executor.submit(id, ErrorAtPickle())
+            executor.shutdown(wait=False)
+            with self.assertRaises(PicklingError):
+                f.result()
+
+        # Make sure the executor is eventually shutdown and do not leave
+        # dangling threads
+        executor_manager.join()
+
+    def test_crash_big_data(self):
+        # Test that there is a clean exception instad of a deadlock when a
+        # child process crashes while some data is being written into the
+        # queue.
+        # https://github.com/python/cpython/issues/94777
+        self.executor.shutdown(wait=True)
+        data = "a" * support.PIPE_MAX_SIZE
+        with self.executor_type(max_workers=2,
+                                mp_context=self.get_context()) as executor:
+            self.executor = executor  # Allow clean up in fail_on_deadlock
+            with self.assertRaises(BrokenProcessPool):
+                list(executor.map(_crash_with_data, [data] * 10))
+
+        executor.shutdown(wait=True)
+
+    def test_gh105829_should_not_deadlock_if_wakeup_pipe_full(self):
+        # Issue #105829: The _ExecutorManagerThread wakeup pipe could
+        # fill up and block. See: https://github.com/python/cpython/issues/105829
+
+        # Lots of cargo culting while writing this test, apologies if
+        # something is really stupid...
+
+        self.executor.shutdown(wait=True)
+
+        if not hasattr(signal, 'alarm'):
+            raise unittest.SkipTest(
+                "Tested platform does not support the alarm signal")
+
+        def timeout(_signum, _frame):
+            import faulthandler
+            faulthandler.dump_traceback()
+
+            raise RuntimeError("timed out while submitting jobs?")
+
+        thread_run = futures.process._ExecutorManagerThread.run
+        def mock_run(self):
+            # Delay thread startup so the wakeup pipe can fill up and block
+            time.sleep(3)
+            thread_run(self)
+
+        class MockWakeup(_ThreadWakeup):
+            """Mock wakeup object to force the wakeup to block"""
+            def __init__(self):
+                super().__init__()
+                self._dummy_queue = queue.Queue(maxsize=1)
+
+            def wakeup(self):
+                self._dummy_queue.put(None, block=True)
+                super().wakeup()
+
+            def clear(self):
+                super().clear()
+                try:
+                    while True:
+                        self._dummy_queue.get_nowait()
+                except queue.Empty:
+                    pass
+
+        with (unittest.mock.patch.object(futures.process._ExecutorManagerThread,
+                                         'run', mock_run),
+              unittest.mock.patch('concurrent.futures.process._ThreadWakeup',
+                                  MockWakeup)):
+            with self.executor_type(max_workers=2,
+                                    mp_context=self.get_context()) as executor:
+                self.executor = executor  # Allow clean up in fail_on_deadlock
+
+                job_num = 100
+                job_data = range(job_num)
+
+                # Need to use sigalarm for timeout detection because
+                # Executor.submit is not guarded by any timeout (both
+                # self._work_ids.put(self._queue_count) and
+                # self._executor_manager_thread_wakeup.wakeup() might
+                # timeout, maybe more?). In this specific case it was
+                # the wakeup call that deadlocked on a blocking pipe.
+                old_handler = signal.signal(signal.SIGALRM, timeout)
+                try:
+                    signal.alarm(int(self.TIMEOUT))
+                    self.assertEqual(job_num, len(list(executor.map(int, job_data))))
+                finally:
+                    signal.alarm(0)
+                    signal.signal(signal.SIGALRM, old_handler)
+
+
+create_executor_tests(globals(), ExecutorDeadlockTest,
+                      executor_mixins=(ProcessPoolForkMixin,
+                                       ProcessPoolForkserverMixin,
+                                       ProcessPoolSpawnMixin))
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_future.py b/Lib/test/test_concurrent_futures/test_future.py
new file mode 100644
index 00000000000000..4066ea1ee4b367
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_future.py
@@ -0,0 +1,291 @@
+import threading
+import time
+import unittest
+from concurrent import futures
+from concurrent.futures._base import (
+    PENDING, RUNNING, CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED, Future)
+
+from test import support
+
+from .util import (
+    PENDING_FUTURE, RUNNING_FUTURE, CANCELLED_FUTURE,
+    CANCELLED_AND_NOTIFIED_FUTURE, EXCEPTION_FUTURE, SUCCESSFUL_FUTURE,
+    BaseTestCase, create_future, setup_module)
+
+
+class FutureTests(BaseTestCase):
+    def test_done_callback_with_result(self):
+        callback_result = None
+        def fn(callback_future):
+            nonlocal callback_result
+            callback_result = callback_future.result()
+
+        f = Future()
+        f.add_done_callback(fn)
+        f.set_result(5)
+        self.assertEqual(5, callback_result)
+
+    def test_done_callback_with_exception(self):
+        callback_exception = None
+        def fn(callback_future):
+            nonlocal callback_exception
+            callback_exception = callback_future.exception()
+
+        f = Future()
+        f.add_done_callback(fn)
+        f.set_exception(Exception('test'))
+        self.assertEqual(('test',), callback_exception.args)
+
+    def test_done_callback_with_cancel(self):
+        was_cancelled = None
+        def fn(callback_future):
+            nonlocal was_cancelled
+            was_cancelled = callback_future.cancelled()
+
+        f = Future()
+        f.add_done_callback(fn)
+        self.assertTrue(f.cancel())
+        self.assertTrue(was_cancelled)
+
+    def test_done_callback_raises(self):
+        with support.captured_stderr() as stderr:
+            raising_was_called = False
+            fn_was_called = False
+
+            def raising_fn(callback_future):
+                nonlocal raising_was_called
+                raising_was_called = True
+                raise Exception('doh!')
+
+            def fn(callback_future):
+                nonlocal fn_was_called
+                fn_was_called = True
+
+            f = Future()
+            f.add_done_callback(raising_fn)
+            f.add_done_callback(fn)
+            f.set_result(5)
+            self.assertTrue(raising_was_called)
+            self.assertTrue(fn_was_called)
+            self.assertIn('Exception: doh!', stderr.getvalue())
+
+    def test_done_callback_already_successful(self):
+        callback_result = None
+        def fn(callback_future):
+            nonlocal callback_result
+            callback_result = callback_future.result()
+
+        f = Future()
+        f.set_result(5)
+        f.add_done_callback(fn)
+        self.assertEqual(5, callback_result)
+
+    def test_done_callback_already_failed(self):
+        callback_exception = None
+        def fn(callback_future):
+            nonlocal callback_exception
+            callback_exception = callback_future.exception()
+
+        f = Future()
+        f.set_exception(Exception('test'))
+        f.add_done_callback(fn)
+        self.assertEqual(('test',), callback_exception.args)
+
+    def test_done_callback_already_cancelled(self):
+        was_cancelled = None
+        def fn(callback_future):
+            nonlocal was_cancelled
+            was_cancelled = callback_future.cancelled()
+
+        f = Future()
+        self.assertTrue(f.cancel())
+        f.add_done_callback(fn)
+        self.assertTrue(was_cancelled)
+
+    def test_done_callback_raises_already_succeeded(self):
+        with support.captured_stderr() as stderr:
+            def raising_fn(callback_future):
+                raise Exception('doh!')
+
+            f = Future()
+
+            # Set the result first to simulate a future that runs instantly,
+            # effectively allowing the callback to be run immediately.
+            f.set_result(5)
+            f.add_done_callback(raising_fn)
+
+            self.assertIn('exception calling callback for', stderr.getvalue())
+            self.assertIn('doh!', stderr.getvalue())
+
+
+    def test_repr(self):
+        self.assertRegex(repr(PENDING_FUTURE),
+                         '<Future at 0x[0-9a-f]+ state=pending>')
+        self.assertRegex(repr(RUNNING_FUTURE),
+                         '<Future at 0x[0-9a-f]+ state=running>')
+        self.assertRegex(repr(CANCELLED_FUTURE),
+                         '<Future at 0x[0-9a-f]+ state=cancelled>')
+        self.assertRegex(repr(CANCELLED_AND_NOTIFIED_FUTURE),
+                         '<Future at 0x[0-9a-f]+ state=cancelled>')
+        self.assertRegex(
+                repr(EXCEPTION_FUTURE),
+                '<Future at 0x[0-9a-f]+ state=finished raised OSError>')
+        self.assertRegex(
+                repr(SUCCESSFUL_FUTURE),
+                '<Future at 0x[0-9a-f]+ state=finished returned int>')
+
+    def test_cancel(self):
+        f1 = create_future(state=PENDING)
+        f2 = create_future(state=RUNNING)
+        f3 = create_future(state=CANCELLED)
+        f4 = create_future(state=CANCELLED_AND_NOTIFIED)
+        f5 = create_future(state=FINISHED, exception=OSError())
+        f6 = create_future(state=FINISHED, result=5)
+
+        self.assertTrue(f1.cancel())
+        self.assertEqual(f1._state, CANCELLED)
+
+        self.assertFalse(f2.cancel())
+        self.assertEqual(f2._state, RUNNING)
+
+        self.assertTrue(f3.cancel())
+        self.assertEqual(f3._state, CANCELLED)
+
+        self.assertTrue(f4.cancel())
+        self.assertEqual(f4._state, CANCELLED_AND_NOTIFIED)
+
+        self.assertFalse(f5.cancel())
+        self.assertEqual(f5._state, FINISHED)
+
+        self.assertFalse(f6.cancel())
+        self.assertEqual(f6._state, FINISHED)
+
+    def test_cancelled(self):
+        self.assertFalse(PENDING_FUTURE.cancelled())
+        self.assertFalse(RUNNING_FUTURE.cancelled())
+        self.assertTrue(CANCELLED_FUTURE.cancelled())
+        self.assertTrue(CANCELLED_AND_NOTIFIED_FUTURE.cancelled())
+        self.assertFalse(EXCEPTION_FUTURE.cancelled())
+        self.assertFalse(SUCCESSFUL_FUTURE.cancelled())
+
+    def test_done(self):
+        self.assertFalse(PENDING_FUTURE.done())
+        self.assertFalse(RUNNING_FUTURE.done())
+        self.assertTrue(CANCELLED_FUTURE.done())
+        self.assertTrue(CANCELLED_AND_NOTIFIED_FUTURE.done())
+        self.assertTrue(EXCEPTION_FUTURE.done())
+        self.assertTrue(SUCCESSFUL_FUTURE.done())
+
+    def test_running(self):
+        self.assertFalse(PENDING_FUTURE.running())
+        self.assertTrue(RUNNING_FUTURE.running())
+        self.assertFalse(CANCELLED_FUTURE.running())
+        self.assertFalse(CANCELLED_AND_NOTIFIED_FUTURE.running())
+        self.assertFalse(EXCEPTION_FUTURE.running())
+        self.assertFalse(SUCCESSFUL_FUTURE.running())
+
+    def test_result_with_timeout(self):
+        self.assertRaises(futures.TimeoutError,
+                          PENDING_FUTURE.result, timeout=0)
+        self.assertRaises(futures.TimeoutError,
+                          RUNNING_FUTURE.result, timeout=0)
+        self.assertRaises(futures.CancelledError,
+                          CANCELLED_FUTURE.result, timeout=0)
+        self.assertRaises(futures.CancelledError,
+                          CANCELLED_AND_NOTIFIED_FUTURE.result, timeout=0)
+        self.assertRaises(OSError, EXCEPTION_FUTURE.result, timeout=0)
+        self.assertEqual(SUCCESSFUL_FUTURE.result(timeout=0), 42)
+
+    def test_result_with_success(self):
+        # TODO(brian@sweetapp.com): This test is timing dependent.
+        def notification():
+            # Wait until the main thread is waiting for the result.
+            time.sleep(1)
+            f1.set_result(42)
+
+        f1 = create_future(state=PENDING)
+        t = threading.Thread(target=notification)
+        t.start()
+
+        self.assertEqual(f1.result(timeout=5), 42)
+        t.join()
+
+    def test_result_with_cancel(self):
+        # TODO(brian@sweetapp.com): This test is timing dependent.
+        def notification():
+            # Wait until the main thread is waiting for the result.
+            time.sleep(1)
+            f1.cancel()
+
+        f1 = create_future(state=PENDING)
+        t = threading.Thread(target=notification)
+        t.start()
+
+        self.assertRaises(futures.CancelledError,
+                          f1.result, timeout=support.SHORT_TIMEOUT)
+        t.join()
+
+    def test_exception_with_timeout(self):
+        self.assertRaises(futures.TimeoutError,
+                          PENDING_FUTURE.exception, timeout=0)
+        self.assertRaises(futures.TimeoutError,
+                          RUNNING_FUTURE.exception, timeout=0)
+        self.assertRaises(futures.CancelledError,
+                          CANCELLED_FUTURE.exception, timeout=0)
+        self.assertRaises(futures.CancelledError,
+                          CANCELLED_AND_NOTIFIED_FUTURE.exception, timeout=0)
+        self.assertTrue(isinstance(EXCEPTION_FUTURE.exception(timeout=0),
+                                   OSError))
+        self.assertEqual(SUCCESSFUL_FUTURE.exception(timeout=0), None)
+
+    def test_exception_with_success(self):
+        def notification():
+            # Wait until the main thread is waiting for the exception.
+            time.sleep(1)
+            with f1._condition:
+                f1._state = FINISHED
+                f1._exception = OSError()
+                f1._condition.notify_all()
+
+        f1 = create_future(state=PENDING)
+        t = threading.Thread(target=notification)
+        t.start()
+
+        self.assertTrue(isinstance(f1.exception(timeout=support.SHORT_TIMEOUT), OSError))
+        t.join()
+
+    def test_multiple_set_result(self):
+        f = create_future(state=PENDING)
+        f.set_result(1)
+
+        with self.assertRaisesRegex(
+                futures.InvalidStateError,
+                'FINISHED: <Future at 0x[0-9a-f]+ '
+                'state=finished returned int>'
+        ):
+            f.set_result(2)
+
+        self.assertTrue(f.done())
+        self.assertEqual(f.result(), 1)
+
+    def test_multiple_set_exception(self):
+        f = create_future(state=PENDING)
+        e = ValueError()
+        f.set_exception(e)
+
+        with self.assertRaisesRegex(
+                futures.InvalidStateError,
+                'FINISHED: <Future at 0x[0-9a-f]+ '
+                'state=finished raised ValueError>'
+        ):
+            f.set_exception(Exception())
+
+        self.assertEqual(f.exception(), e)
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_init.py b/Lib/test/test_concurrent_futures/test_init.py
new file mode 100644
index 00000000000000..ce01e0ff0f287a
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_init.py
@@ -0,0 +1,117 @@
+import contextlib
+import logging
+import queue
+import time
+import unittest
+from concurrent.futures._base import BrokenExecutor
+from logging.handlers import QueueHandler
+
+from test import support
+
+from .util import ExecutorMixin, create_executor_tests, setup_module
+
+
+INITIALIZER_STATUS = 'uninitialized'
+
+def init(x):
+    global INITIALIZER_STATUS
+    INITIALIZER_STATUS = x
+
+def get_init_status():
+    return INITIALIZER_STATUS
+
+def init_fail(log_queue=None):
+    if log_queue is not None:
+        logger = logging.getLogger('concurrent.futures')
+        logger.addHandler(QueueHandler(log_queue))
+        logger.setLevel('CRITICAL')
+        logger.propagate = False
+    time.sleep(0.1)  # let some futures be scheduled
+    raise ValueError('error in initializer')
+
+
+class InitializerMixin(ExecutorMixin):
+    worker_count = 2
+
+    def setUp(self):
+        global INITIALIZER_STATUS
+        INITIALIZER_STATUS = 'uninitialized'
+        self.executor_kwargs = dict(initializer=init,
+                                    initargs=('initialized',))
+        super().setUp()
+
+    def test_initializer(self):
+        futures = [self.executor.submit(get_init_status)
+                   for _ in range(self.worker_count)]
+
+        for f in futures:
+            self.assertEqual(f.result(), 'initialized')
+
+
+class FailingInitializerMixin(ExecutorMixin):
+    worker_count = 2
+
+    def setUp(self):
+        if hasattr(self, "ctx"):
+            # Pass a queue to redirect the child's logging output
+            self.mp_context = self.get_context()
+            self.log_queue = self.mp_context.Queue()
+            self.executor_kwargs = dict(initializer=init_fail,
+                                        initargs=(self.log_queue,))
+        else:
+            # In a thread pool, the child shares our logging setup
+            # (see _assert_logged())
+            self.mp_context = None
+            self.log_queue = None
+            self.executor_kwargs = dict(initializer=init_fail)
+        super().setUp()
+
+    def test_initializer(self):
+        with self._assert_logged('ValueError: error in initializer'):
+            try:
+                future = self.executor.submit(get_init_status)
+            except BrokenExecutor:
+                # Perhaps the executor is already broken
+                pass
+            else:
+                with self.assertRaises(BrokenExecutor):
+                    future.result()
+
+            # At some point, the executor should break
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT,
+                                            "executor not broken"):
+                if self.executor._broken:
+                    break
+
+            # ... and from this point submit() is guaranteed to fail
+            with self.assertRaises(BrokenExecutor):
+                self.executor.submit(get_init_status)
+
+    @contextlib.contextmanager
+    def _assert_logged(self, msg):
+        if self.log_queue is not None:
+            yield
+            output = []
+            try:
+                while True:
+                    output.append(self.log_queue.get_nowait().getMessage())
+            except queue.Empty:
+                pass
+        else:
+            with self.assertLogs('concurrent.futures', 'CRITICAL') as cm:
+                yield
+            output = cm.output
+        self.assertTrue(any(msg in line for line in output),
+                        output)
+
+
+create_executor_tests(globals(), InitializerMixin)
+create_executor_tests(globals(), FailingInitializerMixin)
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_process_pool.py b/Lib/test/test_concurrent_futures/test_process_pool.py
new file mode 100644
index 00000000000000..3e61b0c9387c6f
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_process_pool.py
@@ -0,0 +1,231 @@
+import os
+import sys
+import threading
+import time
+import unittest
+from concurrent import futures
+from concurrent.futures.process import BrokenProcessPool
+
+from test import support
+from test.support import hashlib_helper
+
+from .executor import ExecutorTest, mul
+from .util import (
+    ProcessPoolForkMixin, ProcessPoolForkserverMixin, ProcessPoolSpawnMixin,
+    create_executor_tests, setup_module)
+
+
+class EventfulGCObj():
+    def __init__(self, mgr):
+        self.event = mgr.Event()
+
+    def __del__(self):
+        self.event.set()
+
+
+class ProcessPoolExecutorTest(ExecutorTest):
+
+    @unittest.skipUnless(sys.platform=='win32', 'Windows-only process limit')
+    def test_max_workers_too_large(self):
+        with self.assertRaisesRegex(ValueError,
+                                    "max_workers must be <= 61"):
+            futures.ProcessPoolExecutor(max_workers=62)
+
+    def test_killed_child(self):
+        # When a child process is abruptly terminated, the whole pool gets
+        # "broken".
+        futures = [self.executor.submit(time.sleep, 3)]
+        # Get one of the processes, and terminate (kill) it
+        p = next(iter(self.executor._processes.values()))
+        p.terminate()
+        for fut in futures:
+            self.assertRaises(BrokenProcessPool, fut.result)
+        # Submitting other jobs fails as well.
+        self.assertRaises(BrokenProcessPool, self.executor.submit, pow, 2, 8)
+
+    def test_map_chunksize(self):
+        def bad_map():
+            list(self.executor.map(pow, range(40), range(40), chunksize=-1))
+
+        ref = list(map(pow, range(40), range(40)))
+        self.assertEqual(
+            list(self.executor.map(pow, range(40), range(40), chunksize=6)),
+            ref)
+        self.assertEqual(
+            list(self.executor.map(pow, range(40), range(40), chunksize=50)),
+            ref)
+        self.assertEqual(
+            list(self.executor.map(pow, range(40), range(40), chunksize=40)),
+            ref)
+        self.assertRaises(ValueError, bad_map)
+
+    @classmethod
+    def _test_traceback(cls):
+        raise RuntimeError(123) # some comment
+
+    def test_traceback(self):
+        # We want ensure that the traceback from the child process is
+        # contained in the traceback raised in the main process.
+        future = self.executor.submit(self._test_traceback)
+        with self.assertRaises(Exception) as cm:
+            future.result()
+
+        exc = cm.exception
+        self.assertIs(type(exc), RuntimeError)
+        self.assertEqual(exc.args, (123,))
+        cause = exc.__cause__
+        self.assertIs(type(cause), futures.process._RemoteTraceback)
+        self.assertIn('raise RuntimeError(123) # some comment', cause.tb)
+
+        with support.captured_stderr() as f1:
+            try:
+                raise exc
+            except RuntimeError:
+                sys.excepthook(*sys.exc_info())
+        self.assertIn('raise RuntimeError(123) # some comment',
+                      f1.getvalue())
+
+    @hashlib_helper.requires_hashdigest('md5')
+    def test_ressources_gced_in_workers(self):
+        # Ensure that argument for a job are correctly gc-ed after the job
+        # is finished
+        mgr = self.get_context().Manager()
+        obj = EventfulGCObj(mgr)
+        future = self.executor.submit(id, obj)
+        future.result()
+
+        self.assertTrue(obj.event.wait(timeout=1))
+
+        # explicitly destroy the object to ensure that EventfulGCObj.__del__()
+        # is called while manager is still running.
+        obj = None
+        support.gc_collect()
+
+        mgr.shutdown()
+        mgr.join()
+
+    def test_saturation(self):
+        executor = self.executor
+        mp_context = self.get_context()
+        sem = mp_context.Semaphore(0)
+        job_count = 15 * executor._max_workers
+        for _ in range(job_count):
+            executor.submit(sem.acquire)
+        self.assertEqual(len(executor._processes), executor._max_workers)
+        for _ in range(job_count):
+            sem.release()
+
+    def test_idle_process_reuse_one(self):
+        executor = self.executor
+        assert executor._max_workers >= 4
+        if self.get_context().get_start_method(allow_none=False) == "fork":
+            raise unittest.SkipTest("Incompatible with the fork start method.")
+        executor.submit(mul, 21, 2).result()
+        executor.submit(mul, 6, 7).result()
+        executor.submit(mul, 3, 14).result()
+        self.assertEqual(len(executor._processes), 1)
+
+    def test_idle_process_reuse_multiple(self):
+        executor = self.executor
+        assert executor._max_workers <= 5
+        if self.get_context().get_start_method(allow_none=False) == "fork":
+            raise unittest.SkipTest("Incompatible with the fork start method.")
+        executor.submit(mul, 12, 7).result()
+        executor.submit(mul, 33, 25)
+        executor.submit(mul, 25, 26).result()
+        executor.submit(mul, 18, 29)
+        executor.submit(mul, 1, 2).result()
+        executor.submit(mul, 0, 9)
+        self.assertLessEqual(len(executor._processes), 3)
+        executor.shutdown()
+
+    def test_max_tasks_per_child(self):
+        context = self.get_context()
+        if context.get_start_method(allow_none=False) == "fork":
+            with self.assertRaises(ValueError):
+                self.executor_type(1, mp_context=context, max_tasks_per_child=3)
+            return
+        # not using self.executor as we need to control construction.
+        # arguably this could go in another class w/o that mixin.
+        executor = self.executor_type(
+                1, mp_context=context, max_tasks_per_child=3)
+        f1 = executor.submit(os.getpid)
+        original_pid = f1.result()
+        # The worker pid remains the same as the worker could be reused
+        f2 = executor.submit(os.getpid)
+        self.assertEqual(f2.result(), original_pid)
+        self.assertEqual(len(executor._processes), 1)
+        f3 = executor.submit(os.getpid)
+        self.assertEqual(f3.result(), original_pid)
+
+        # A new worker is spawned, with a statistically different pid,
+        # while the previous was reaped.
+        f4 = executor.submit(os.getpid)
+        new_pid = f4.result()
+        self.assertNotEqual(original_pid, new_pid)
+        self.assertEqual(len(executor._processes), 1)
+
+        executor.shutdown()
+
+    def test_max_tasks_per_child_defaults_to_spawn_context(self):
+        # not using self.executor as we need to control construction.
+        # arguably this could go in another class w/o that mixin.
+        executor = self.executor_type(1, max_tasks_per_child=3)
+        self.assertEqual(executor._mp_context.get_start_method(), "spawn")
+
+    def test_max_tasks_early_shutdown(self):
+        context = self.get_context()
+        if context.get_start_method(allow_none=False) == "fork":
+            raise unittest.SkipTest("Incompatible with the fork start method.")
+        # not using self.executor as we need to control construction.
+        # arguably this could go in another class w/o that mixin.
+        executor = self.executor_type(
+                3, mp_context=context, max_tasks_per_child=1)
+        futures = []
+        for i in range(6):
+            futures.append(executor.submit(mul, i, i))
+        executor.shutdown()
+        for i, future in enumerate(futures):
+            self.assertEqual(future.result(), mul(i, i))
+
+    def test_python_finalization_error(self):
+        # gh-109047: Catch RuntimeError on thread creation
+        # during Python finalization.
+
+        context = self.get_context()
+
+        # gh-109047: Mock the threading.start_joinable_thread() function to inject
+        # RuntimeError: simulate the error raised during Python finalization.
+        # Block the second creation: create _ExecutorManagerThread, but block
+        # QueueFeederThread.
+        orig_start_new_thread = threading._start_joinable_thread
+        nthread = 0
+        def mock_start_new_thread(func, *args):
+            nonlocal nthread
+            if nthread >= 1:
+                raise RuntimeError("can't create new thread at "
+                                   "interpreter shutdown")
+            nthread += 1
+            return orig_start_new_thread(func, *args)
+
+        with support.swap_attr(threading, '_start_joinable_thread',
+                               mock_start_new_thread):
+            executor = self.executor_type(max_workers=2, mp_context=context)
+            with executor:
+                with self.assertRaises(BrokenProcessPool):
+                    list(executor.map(mul, [(2, 3)] * 10))
+            executor.shutdown()
+
+
+create_executor_tests(globals(), ProcessPoolExecutorTest,
+                      executor_mixins=(ProcessPoolForkMixin,
+                                       ProcessPoolForkserverMixin,
+                                       ProcessPoolSpawnMixin))
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_shutdown.py b/Lib/test/test_concurrent_futures/test_shutdown.py
new file mode 100644
index 00000000000000..45dab7a75fdd50
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_shutdown.py
@@ -0,0 +1,343 @@
+import signal
+import sys
+import threading
+import time
+import unittest
+from concurrent import futures
+
+from test import support
+from test.support.script_helper import assert_python_ok
+
+from .util import (
+    BaseTestCase, ThreadPoolMixin, ProcessPoolForkMixin,
+    ProcessPoolForkserverMixin, ProcessPoolSpawnMixin,
+    create_executor_tests, setup_module)
+
+
+def sleep_and_print(t, msg):
+    time.sleep(t)
+    print(msg)
+    sys.stdout.flush()
+
+
+class ExecutorShutdownTest:
+    def test_run_after_shutdown(self):
+        self.executor.shutdown()
+        self.assertRaises(RuntimeError,
+                          self.executor.submit,
+                          pow, 2, 5)
+
+    def test_interpreter_shutdown(self):
+        # Test the atexit hook for shutdown of worker threads and processes
+        rc, out, err = assert_python_ok('-c', """if 1:
+            from concurrent.futures import {executor_type}
+            from time import sleep
+            from test.test_concurrent_futures.test_shutdown import sleep_and_print
+            if __name__ == "__main__":
+                context = '{context}'
+                if context == "":
+                    t = {executor_type}(5)
+                else:
+                    from multiprocessing import get_context
+                    context = get_context(context)
+                    t = {executor_type}(5, mp_context=context)
+                t.submit(sleep_and_print, 1.0, "apple")
+            """.format(executor_type=self.executor_type.__name__,
+                       context=getattr(self, "ctx", "")))
+        # Errors in atexit hooks don't change the process exit code, check
+        # stderr manually.
+        self.assertFalse(err)
+        self.assertEqual(out.strip(), b"apple")
+
+    def test_submit_after_interpreter_shutdown(self):
+        # Test the atexit hook for shutdown of worker threads and processes
+        rc, out, err = assert_python_ok('-c', """if 1:
+            import atexit
+            @atexit.register
+            def run_last():
+                try:
+                    t.submit(id, None)
+                except RuntimeError:
+                    print("runtime-error")
+                    raise
+            from concurrent.futures import {executor_type}
+            if __name__ == "__main__":
+                context = '{context}'
+                if not context:
+                    t = {executor_type}(5)
+                else:
+                    from multiprocessing import get_context
+                    context = get_context(context)
+                    t = {executor_type}(5, mp_context=context)
+                    t.submit(id, 42).result()
+            """.format(executor_type=self.executor_type.__name__,
+                       context=getattr(self, "ctx", "")))
+        # Errors in atexit hooks don't change the process exit code, check
+        # stderr manually.
+        self.assertIn("RuntimeError: cannot schedule new futures", err.decode())
+        self.assertEqual(out.strip(), b"runtime-error")
+
+    def test_hang_issue12364(self):
+        fs = [self.executor.submit(time.sleep, 0.1) for _ in range(50)]
+        self.executor.shutdown()
+        for f in fs:
+            f.result()
+
+    def test_cancel_futures(self):
+        assert self.worker_count <= 5, "test needs few workers"
+        fs = [self.executor.submit(time.sleep, .1) for _ in range(50)]
+        self.executor.shutdown(cancel_futures=True)
+        # We can't guarantee the exact number of cancellations, but we can
+        # guarantee that *some* were cancelled. With few workers, many of
+        # the submitted futures should have been cancelled.
+        cancelled = [fut for fut in fs if fut.cancelled()]
+        self.assertGreater(len(cancelled), 20)
+
+        # Ensure the other futures were able to finish.
+        # Use "not fut.cancelled()" instead of "fut.done()" to include futures
+        # that may have been left in a pending state.
+        others = [fut for fut in fs if not fut.cancelled()]
+        for fut in others:
+            self.assertTrue(fut.done(), msg=f"{fut._state=}")
+            self.assertIsNone(fut.exception())
+
+        # Similar to the number of cancelled futures, we can't guarantee the
+        # exact number that completed. But, we can guarantee that at least
+        # one finished.
+        self.assertGreater(len(others), 0)
+
+    def test_hang_gh83386(self):
+        """shutdown(wait=False) doesn't hang at exit with running futures.
+
+        See https://github.com/python/cpython/issues/83386.
+        """
+        if self.executor_type == futures.ProcessPoolExecutor:
+            raise unittest.SkipTest(
+                "Hangs, see https://github.com/python/cpython/issues/83386")
+
+        rc, out, err = assert_python_ok('-c', """if True:
+            from concurrent.futures import {executor_type}
+            from test.test_concurrent_futures.test_shutdown import sleep_and_print
+            if __name__ == "__main__":
+                if {context!r}: multiprocessing.set_start_method({context!r})
+                t = {executor_type}(max_workers=3)
+                t.submit(sleep_and_print, 1.0, "apple")
+                t.shutdown(wait=False)
+            """.format(executor_type=self.executor_type.__name__,
+                       context=getattr(self, 'ctx', None)))
+        self.assertFalse(err)
+        self.assertEqual(out.strip(), b"apple")
+
+    def test_hang_gh94440(self):
+        """shutdown(wait=True) doesn't hang when a future was submitted and
+        quickly canceled right before shutdown.
+
+        See https://github.com/python/cpython/issues/94440.
+        """
+        if not hasattr(signal, 'alarm'):
+            raise unittest.SkipTest(
+                "Tested platform does not support the alarm signal")
+
+        def timeout(_signum, _frame):
+            raise RuntimeError("timed out waiting for shutdown")
+
+        kwargs = {}
+        if getattr(self, 'ctx', None):
+            kwargs['mp_context'] = self.get_context()
+        executor = self.executor_type(max_workers=1, **kwargs)
+        executor.submit(int).result()
+        old_handler = signal.signal(signal.SIGALRM, timeout)
+        try:
+            signal.alarm(5)
+            executor.submit(int).cancel()
+            executor.shutdown(wait=True)
+        finally:
+            signal.alarm(0)
+            signal.signal(signal.SIGALRM, old_handler)
+
+
+class ThreadPoolShutdownTest(ThreadPoolMixin, ExecutorShutdownTest, BaseTestCase):
+    def test_threads_terminate(self):
+        def acquire_lock(lock):
+            lock.acquire()
+
+        sem = threading.Semaphore(0)
+        for i in range(3):
+            self.executor.submit(acquire_lock, sem)
+        self.assertEqual(len(self.executor._threads), 3)
+        for i in range(3):
+            sem.release()
+        self.executor.shutdown()
+        for t in self.executor._threads:
+            t.join()
+
+    def test_context_manager_shutdown(self):
+        with futures.ThreadPoolExecutor(max_workers=5) as e:
+            executor = e
+            self.assertEqual(list(e.map(abs, range(-5, 5))),
+                             [5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
+
+        for t in executor._threads:
+            t.join()
+
+    def test_del_shutdown(self):
+        executor = futures.ThreadPoolExecutor(max_workers=5)
+        res = executor.map(abs, range(-5, 5))
+        threads = executor._threads
+        del executor
+
+        for t in threads:
+            t.join()
+
+        # Make sure the results were all computed before the
+        # executor got shutdown.
+        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
+
+    def test_shutdown_no_wait(self):
+        # Ensure that the executor cleans up the threads when calling
+        # shutdown with wait=False
+        executor = futures.ThreadPoolExecutor(max_workers=5)
+        res = executor.map(abs, range(-5, 5))
+        threads = executor._threads
+        executor.shutdown(wait=False)
+        for t in threads:
+            t.join()
+
+        # Make sure the results were all computed before the
+        # executor got shutdown.
+        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
+
+
+    def test_thread_names_assigned(self):
+        executor = futures.ThreadPoolExecutor(
+            max_workers=5, thread_name_prefix='SpecialPool')
+        executor.map(abs, range(-5, 5))
+        threads = executor._threads
+        del executor
+        support.gc_collect()  # For PyPy or other GCs.
+
+        for t in threads:
+            self.assertRegex(t.name, r'^SpecialPool_[0-4]$')
+            t.join()
+
+    def test_thread_names_default(self):
+        executor = futures.ThreadPoolExecutor(max_workers=5)
+        executor.map(abs, range(-5, 5))
+        threads = executor._threads
+        del executor
+        support.gc_collect()  # For PyPy or other GCs.
+
+        for t in threads:
+            # Ensure that our default name is reasonably sane and unique when
+            # no thread_name_prefix was supplied.
+            self.assertRegex(t.name, r'ThreadPoolExecutor-\d+_[0-4]$')
+            t.join()
+
+    def test_cancel_futures_wait_false(self):
+        # Can only be reliably tested for TPE, since PPE often hangs with
+        # `wait=False` (even without *cancel_futures*).
+        rc, out, err = assert_python_ok('-c', """if True:
+            from concurrent.futures import ThreadPoolExecutor
+            from test.test_concurrent_futures.test_shutdown import sleep_and_print
+            if __name__ == "__main__":
+                t = ThreadPoolExecutor()
+                t.submit(sleep_and_print, .1, "apple")
+                t.shutdown(wait=False, cancel_futures=True)
+            """)
+        # Errors in atexit hooks don't change the process exit code, check
+        # stderr manually.
+        self.assertFalse(err)
+        self.assertEqual(out.strip(), b"apple")
+
+
+class ProcessPoolShutdownTest(ExecutorShutdownTest):
+    def test_processes_terminate(self):
+        def acquire_lock(lock):
+            lock.acquire()
+
+        mp_context = self.get_context()
+        if mp_context.get_start_method(allow_none=False) == "fork":
+            # fork pre-spawns, not on demand.
+            expected_num_processes = self.worker_count
+        else:
+            expected_num_processes = 3
+
+        sem = mp_context.Semaphore(0)
+        for _ in range(3):
+            self.executor.submit(acquire_lock, sem)
+        self.assertEqual(len(self.executor._processes), expected_num_processes)
+        for _ in range(3):
+            sem.release()
+        processes = self.executor._processes
+        self.executor.shutdown()
+
+        for p in processes.values():
+            p.join()
+
+    def test_context_manager_shutdown(self):
+        with futures.ProcessPoolExecutor(
+                max_workers=5, mp_context=self.get_context()) as e:
+            processes = e._processes
+            self.assertEqual(list(e.map(abs, range(-5, 5))),
+                             [5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
+
+        for p in processes.values():
+            p.join()
+
+    def test_del_shutdown(self):
+        executor = futures.ProcessPoolExecutor(
+                max_workers=5, mp_context=self.get_context())
+        res = executor.map(abs, range(-5, 5))
+        executor_manager_thread = executor._executor_manager_thread
+        processes = executor._processes
+        call_queue = executor._call_queue
+        executor_manager_thread = executor._executor_manager_thread
+        del executor
+        support.gc_collect()  # For PyPy or other GCs.
+
+        # Make sure that all the executor resources were properly cleaned by
+        # the shutdown process
+        executor_manager_thread.join()
+        for p in processes.values():
+            p.join()
+        call_queue.join_thread()
+
+        # Make sure the results were all computed before the
+        # executor got shutdown.
+        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
+
+    def test_shutdown_no_wait(self):
+        # Ensure that the executor cleans up the processes when calling
+        # shutdown with wait=False
+        executor = futures.ProcessPoolExecutor(
+                max_workers=5, mp_context=self.get_context())
+        res = executor.map(abs, range(-5, 5))
+        processes = executor._processes
+        call_queue = executor._call_queue
+        executor_manager_thread = executor._executor_manager_thread
+        executor.shutdown(wait=False)
+
+        # Make sure that all the executor resources were properly cleaned by
+        # the shutdown process
+        executor_manager_thread.join()
+        for p in processes.values():
+            p.join()
+        call_queue.join_thread()
+
+        # Make sure the results were all computed before the executor got
+        # shutdown.
+        assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
+
+
+create_executor_tests(globals(), ProcessPoolShutdownTest,
+                      executor_mixins=(ProcessPoolForkMixin,
+                                       ProcessPoolForkserverMixin,
+                                       ProcessPoolSpawnMixin))
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_thread_pool.py b/Lib/test/test_concurrent_futures/test_thread_pool.py
new file mode 100644
index 00000000000000..5926a632aa4bec
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_thread_pool.py
@@ -0,0 +1,100 @@
+import contextlib
+import multiprocessing as mp
+import multiprocessing.process
+import multiprocessing.util
+import os
+import threading
+import unittest
+from concurrent import futures
+from test import support
+
+from .executor import ExecutorTest, mul
+from .util import BaseTestCase, ThreadPoolMixin, setup_module
+
+
+class ThreadPoolExecutorTest(ThreadPoolMixin, ExecutorTest, BaseTestCase):
+    def test_map_submits_without_iteration(self):
+        """Tests verifying issue 11777."""
+        finished = []
+        def record_finished(n):
+            finished.append(n)
+
+        self.executor.map(record_finished, range(10))
+        self.executor.shutdown(wait=True)
+        self.assertCountEqual(finished, range(10))
+
+    def test_default_workers(self):
+        executor = self.executor_type()
+        expected = min(32, (os.process_cpu_count() or 1) + 4)
+        self.assertEqual(executor._max_workers, expected)
+
+    def test_saturation(self):
+        executor = self.executor_type(4)
+        def acquire_lock(lock):
+            lock.acquire()
+
+        sem = threading.Semaphore(0)
+        for i in range(15 * executor._max_workers):
+            executor.submit(acquire_lock, sem)
+        self.assertEqual(len(executor._threads), executor._max_workers)
+        for i in range(15 * executor._max_workers):
+            sem.release()
+        executor.shutdown(wait=True)
+
+    def test_idle_thread_reuse(self):
+        executor = self.executor_type()
+        executor.submit(mul, 21, 2).result()
+        executor.submit(mul, 6, 7).result()
+        executor.submit(mul, 3, 14).result()
+        self.assertEqual(len(executor._threads), 1)
+        executor.shutdown(wait=True)
+
+    @unittest.skipUnless(hasattr(os, 'register_at_fork'), 'need os.register_at_fork')
+    @support.requires_resource('cpu')
+    def test_hang_global_shutdown_lock(self):
+        # bpo-45021: _global_shutdown_lock should be reinitialized in the child
+        # process, otherwise it will never exit
+        def submit(pool):
+            pool.submit(submit, pool)
+
+        with futures.ThreadPoolExecutor(1) as pool:
+            pool.submit(submit, pool)
+
+            for _ in range(50):
+                with futures.ProcessPoolExecutor(1, mp_context=mp.get_context('fork')) as workers:
+                    workers.submit(tuple)
+
+    def test_executor_map_current_future_cancel(self):
+        stop_event = threading.Event()
+        log = []
+
+        def log_n_wait(ident):
+            log.append(f"{ident=} started")
+            try:
+                stop_event.wait()
+            finally:
+                log.append(f"{ident=} stopped")
+
+        with self.executor_type(max_workers=1) as pool:
+            # submit work to saturate the pool
+            fut = pool.submit(log_n_wait, ident="first")
+            try:
+                with contextlib.closing(
+                    pool.map(log_n_wait, ["second", "third"], timeout=0)
+                ) as gen:
+                    with self.assertRaises(TimeoutError):
+                        next(gen)
+            finally:
+                stop_event.set()
+            fut.result()
+        # ident='second' is cancelled as a result of raising a TimeoutError
+        # ident='third' is cancelled because it remained in the collection of futures
+        self.assertListEqual(log, ["ident='first' started", "ident='first' stopped"])
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/test_wait.py b/Lib/test/test_concurrent_futures/test_wait.py
new file mode 100644
index 00000000000000..ff486202092c81
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/test_wait.py
@@ -0,0 +1,165 @@
+import sys
+import threading
+import time
+import unittest
+from concurrent import futures
+from test import support
+
+from .util import (
+    CANCELLED_FUTURE, CANCELLED_AND_NOTIFIED_FUTURE, EXCEPTION_FUTURE,
+    SUCCESSFUL_FUTURE,
+    create_executor_tests, setup_module,
+    BaseTestCase, ThreadPoolMixin,
+    ProcessPoolForkMixin, ProcessPoolForkserverMixin, ProcessPoolSpawnMixin)
+
+
+def mul(x, y):
+    return x * y
+
+def sleep_and_raise(t):
+    time.sleep(t)
+    raise Exception('this is an exception')
+
+
+class WaitTests:
+    def test_20369(self):
+        # See https://bugs.python.org/issue20369
+        future = self.executor.submit(time.sleep, 1.5)
+        done, not_done = futures.wait([future, future],
+                            return_when=futures.ALL_COMPLETED)
+        self.assertEqual({future}, done)
+        self.assertEqual(set(), not_done)
+
+
+    def test_first_completed(self):
+        future1 = self.executor.submit(mul, 21, 2)
+        future2 = self.executor.submit(time.sleep, 1.5)
+
+        done, not_done = futures.wait(
+                [CANCELLED_FUTURE, future1, future2],
+                 return_when=futures.FIRST_COMPLETED)
+
+        self.assertEqual(set([future1]), done)
+        self.assertEqual(set([CANCELLED_FUTURE, future2]), not_done)
+
+    def test_first_completed_some_already_completed(self):
+        future1 = self.executor.submit(time.sleep, 1.5)
+
+        finished, pending = futures.wait(
+                 [CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE, future1],
+                 return_when=futures.FIRST_COMPLETED)
+
+        self.assertEqual(
+                set([CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE]),
+                finished)
+        self.assertEqual(set([future1]), pending)
+
+    @support.requires_resource('walltime')
+    def test_first_exception(self):
+        future1 = self.executor.submit(mul, 2, 21)
+        future2 = self.executor.submit(sleep_and_raise, 1.5)
+        future3 = self.executor.submit(time.sleep, 3)
+
+        finished, pending = futures.wait(
+                [future1, future2, future3],
+                return_when=futures.FIRST_EXCEPTION)
+
+        self.assertEqual(set([future1, future2]), finished)
+        self.assertEqual(set([future3]), pending)
+
+    def test_first_exception_some_already_complete(self):
+        future1 = self.executor.submit(divmod, 21, 0)
+        future2 = self.executor.submit(time.sleep, 1.5)
+
+        finished, pending = futures.wait(
+                [SUCCESSFUL_FUTURE,
+                 CANCELLED_FUTURE,
+                 CANCELLED_AND_NOTIFIED_FUTURE,
+                 future1, future2],
+                return_when=futures.FIRST_EXCEPTION)
+
+        self.assertEqual(set([SUCCESSFUL_FUTURE,
+                              CANCELLED_AND_NOTIFIED_FUTURE,
+                              future1]), finished)
+        self.assertEqual(set([CANCELLED_FUTURE, future2]), pending)
+
+    def test_first_exception_one_already_failed(self):
+        future1 = self.executor.submit(time.sleep, 2)
+
+        finished, pending = futures.wait(
+                 [EXCEPTION_FUTURE, future1],
+                 return_when=futures.FIRST_EXCEPTION)
+
+        self.assertEqual(set([EXCEPTION_FUTURE]), finished)
+        self.assertEqual(set([future1]), pending)
+
+    def test_all_completed(self):
+        future1 = self.executor.submit(divmod, 2, 0)
+        future2 = self.executor.submit(mul, 2, 21)
+
+        finished, pending = futures.wait(
+                [SUCCESSFUL_FUTURE,
+                 CANCELLED_AND_NOTIFIED_FUTURE,
+                 EXCEPTION_FUTURE,
+                 future1,
+                 future2],
+                return_when=futures.ALL_COMPLETED)
+
+        self.assertEqual(set([SUCCESSFUL_FUTURE,
+                              CANCELLED_AND_NOTIFIED_FUTURE,
+                              EXCEPTION_FUTURE,
+                              future1,
+                              future2]), finished)
+        self.assertEqual(set(), pending)
+
+    def test_timeout(self):
+        short_timeout = 0.050
+        long_timeout = short_timeout * 10
+
+        future = self.executor.submit(time.sleep, long_timeout)
+
+        finished, pending = futures.wait(
+                [CANCELLED_AND_NOTIFIED_FUTURE,
+                 EXCEPTION_FUTURE,
+                 SUCCESSFUL_FUTURE,
+                 future],
+                timeout=short_timeout,
+                return_when=futures.ALL_COMPLETED)
+
+        self.assertEqual(set([CANCELLED_AND_NOTIFIED_FUTURE,
+                              EXCEPTION_FUTURE,
+                              SUCCESSFUL_FUTURE]),
+                         finished)
+        self.assertEqual(set([future]), pending)
+
+
+class ThreadPoolWaitTests(ThreadPoolMixin, WaitTests, BaseTestCase):
+
+    def test_pending_calls_race(self):
+        # Issue #14406: multi-threaded race condition when waiting on all
+        # futures.
+        event = threading.Event()
+        def future_func():
+            event.wait()
+        oldswitchinterval = sys.getswitchinterval()
+        sys.setswitchinterval(1e-6)
+        try:
+            fs = {self.executor.submit(future_func) for i in range(100)}
+            event.set()
+            futures.wait(fs, return_when=futures.ALL_COMPLETED)
+        finally:
+            sys.setswitchinterval(oldswitchinterval)
+
+
+create_executor_tests(globals(), WaitTests,
+                      executor_mixins=(ProcessPoolForkMixin,
+                                       ProcessPoolForkserverMixin,
+                                       ProcessPoolSpawnMixin))
+
+
+def setUpModule():
+    setup_module()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_concurrent_futures/util.py b/Lib/test/test_concurrent_futures/util.py
new file mode 100644
index 00000000000000..dc48bec796b87f
--- /dev/null
+++ b/Lib/test/test_concurrent_futures/util.py
@@ -0,0 +1,141 @@
+import multiprocessing
+import sys
+import time
+import unittest
+from concurrent import futures
+from concurrent.futures._base import (
+    PENDING, RUNNING, CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED, Future,
+    )
+from concurrent.futures.process import _check_system_limits
+
+from test import support
+from test.support import threading_helper
+
+
+def create_future(state=PENDING, exception=None, result=None):
+    f = Future()
+    f._state = state
+    f._exception = exception
+    f._result = result
+    return f
+
+
+PENDING_FUTURE = create_future(state=PENDING)
+RUNNING_FUTURE = create_future(state=RUNNING)
+CANCELLED_FUTURE = create_future(state=CANCELLED)
+CANCELLED_AND_NOTIFIED_FUTURE = create_future(state=CANCELLED_AND_NOTIFIED)
+EXCEPTION_FUTURE = create_future(state=FINISHED, exception=OSError())
+SUCCESSFUL_FUTURE = create_future(state=FINISHED, result=42)
+
+
+class BaseTestCase(unittest.TestCase):
+    def setUp(self):
+        self._thread_key = threading_helper.threading_setup()
+
+    def tearDown(self):
+        support.reap_children()
+        threading_helper.threading_cleanup(*self._thread_key)
+
+
+class ExecutorMixin:
+    worker_count = 5
+    executor_kwargs = {}
+
+    def setUp(self):
+        super().setUp()
+
+        self.t1 = time.monotonic()
+        if hasattr(self, "ctx"):
+            self.executor = self.executor_type(
+                max_workers=self.worker_count,
+                mp_context=self.get_context(),
+                **self.executor_kwargs)
+        else:
+            self.executor = self.executor_type(
+                max_workers=self.worker_count,
+                **self.executor_kwargs)
+
+    def tearDown(self):
+        self.executor.shutdown(wait=True)
+        self.executor = None
+
+        dt = time.monotonic() - self.t1
+        if support.verbose:
+            print("%.2fs" % dt, end=' ')
+        self.assertLess(dt, 300, "synchronization issue: test lasted too long")
+
+        super().tearDown()
+
+    def get_context(self):
+        return multiprocessing.get_context(self.ctx)
+
+
+class ThreadPoolMixin(ExecutorMixin):
+    executor_type = futures.ThreadPoolExecutor
+
+
+class ProcessPoolForkMixin(ExecutorMixin):
+    executor_type = futures.ProcessPoolExecutor
+    ctx = "fork"
+
+    def get_context(self):
+        try:
+            _check_system_limits()
+        except NotImplementedError:
+            self.skipTest("ProcessPoolExecutor unavailable on this system")
+        if sys.platform == "win32":
+            self.skipTest("require unix system")
+        return super().get_context()
+
+
+class ProcessPoolSpawnMixin(ExecutorMixin):
+    executor_type = futures.ProcessPoolExecutor
+    ctx = "spawn"
+
+    def get_context(self):
+        try:
+            _check_system_limits()
+        except NotImplementedError:
+            self.skipTest("ProcessPoolExecutor unavailable on this system")
+        return super().get_context()
+
+
+class ProcessPoolForkserverMixin(ExecutorMixin):
+    executor_type = futures.ProcessPoolExecutor
+    ctx = "forkserver"
+
+    def get_context(self):
+        try:
+            _check_system_limits()
+        except NotImplementedError:
+            self.skipTest("ProcessPoolExecutor unavailable on this system")
+        if sys.platform == "win32":
+            self.skipTest("require unix system")
+        return super().get_context()
+
+
+def create_executor_tests(remote_globals, mixin, bases=(BaseTestCase,),
+                          executor_mixins=(ThreadPoolMixin,
+                                           ProcessPoolForkMixin,
+                                           ProcessPoolForkserverMixin,
+                                           ProcessPoolSpawnMixin)):
+    def strip_mixin(name):
+        if name.endswith(('Mixin', 'Tests')):
+            return name[:-5]
+        elif name.endswith('Test'):
+            return name[:-4]
+        else:
+            return name
+
+    module = remote_globals['__name__']
+    for exe in executor_mixins:
+        name = ("%s%sTest"
+                % (strip_mixin(exe.__name__), strip_mixin(mixin.__name__)))
+        cls = type(name, (mixin,) + (exe,) + bases, {'__module__': module})
+        remote_globals[name] = cls
+
+
+def setup_module():
+    unittest.addModuleCleanup(multiprocessing.util._cleanup_tests)
+    thread_info = threading_helper.threading_setup()
+    unittest.addModuleCleanup(threading_helper.threading_cleanup, *thread_info)
diff --git a/Lib/test/test_configparser.py b/Lib/test/test_configparser.py
index da17c00063c56d..2d7dfbde7082ee 100644
--- a/Lib/test/test_configparser.py
+++ b/Lib/test/test_configparser.py
@@ -5,7 +5,6 @@
 import pathlib
 import textwrap
 import unittest
-import warnings
 
 from test import support
 from test.support import os_helper
@@ -544,7 +543,7 @@ def test_parse_errors(self):
                                 "[Foo]\n  wrong-indent\n")
             self.assertEqual(e.args, ('<???>',))
             # read_file on a real file
-            tricky = support.findfile("cfgparser.3")
+            tricky = support.findfile("cfgparser.3", subdir="configdata")
             if self.delimiters[0] == '=':
                 error = configparser.ParsingError
                 expected = (tricky,)
@@ -718,7 +717,7 @@ class mystr(str):
     def test_read_returns_file_list(self):
         if self.delimiters[0] != '=':
             self.skipTest('incompatible format')
-        file1 = support.findfile("cfgparser.1")
+        file1 = support.findfile("cfgparser.1", subdir="configdata")
         # check when we pass a mix of readable and non-readable files:
         cf = self.newconfig()
         parsed_files = cf.read([file1, "nonexistent-file"], encoding="utf-8")
@@ -751,7 +750,7 @@ def test_read_returns_file_list(self):
     def test_read_returns_file_list_with_bytestring_path(self):
         if self.delimiters[0] != '=':
             self.skipTest('incompatible format')
-        file1_bytestring = support.findfile("cfgparser.1").encode()
+        file1_bytestring = support.findfile("cfgparser.1", subdir="configdata").encode()
         # check when passing an existing bytestring path
         cf = self.newconfig()
         parsed_files = cf.read(file1_bytestring, encoding="utf-8")
@@ -907,9 +906,6 @@ def test_interpolation(self):
         if self.interpolation == configparser._UNSET:
             self.assertEqual(e.args, ("bar11", "Foo",
                 "something %(with11)s lots of interpolation (11 steps)"))
-        elif isinstance(self.interpolation, configparser.LegacyInterpolation):
-            self.assertEqual(e.args, ("bar11", "Foo",
-                "something %(with11)s lots of interpolation (11 steps)"))
 
     def test_interpolation_missing_value(self):
         cf = self.get_interpolation_config()
@@ -921,9 +917,6 @@ def test_interpolation_missing_value(self):
         if self.interpolation == configparser._UNSET:
             self.assertEqual(e.args, ('name', 'Interpolation Error',
                                     '%(reference)s', 'reference'))
-        elif isinstance(self.interpolation, configparser.LegacyInterpolation):
-            self.assertEqual(e.args, ('name', 'Interpolation Error',
-                                    '%(reference)s', 'reference'))
 
     def test_items(self):
         self.check_items_config([('default', '<default>'),
@@ -942,9 +935,6 @@ def test_safe_interpolation(self):
         self.assertEqual(cf.get("section", "ok"), "xxx/%s")
         if self.interpolation == configparser._UNSET:
             self.assertEqual(cf.get("section", "not_ok"), "xxx/xxx/%s")
-        elif isinstance(self.interpolation, configparser.LegacyInterpolation):
-            with self.assertRaises(TypeError):
-                cf.get("section", "not_ok")
 
     def test_set_malformatted_interpolation(self):
         cf = self.fromstring("[sect]\n"
@@ -1025,31 +1015,6 @@ class CustomConfigParser(configparser.ConfigParser):
         cf.read_string(self.ini)
         self.assertMatchesIni(cf)
 
-
-class ConfigParserTestCaseLegacyInterpolation(ConfigParserTestCase):
-    config_class = configparser.ConfigParser
-    with warnings.catch_warnings():
-        warnings.simplefilter("ignore", DeprecationWarning)
-        interpolation = configparser.LegacyInterpolation()
-
-    def test_set_malformatted_interpolation(self):
-        cf = self.fromstring("[sect]\n"
-                             "option1{eq}foo\n".format(eq=self.delimiters[0]))
-
-        self.assertEqual(cf.get('sect', "option1"), "foo")
-
-        cf.set("sect", "option1", "%foo")
-        self.assertEqual(cf.get('sect', "option1"), "%foo")
-        cf.set("sect", "option1", "foo%")
-        self.assertEqual(cf.get('sect', "option1"), "foo%")
-        cf.set("sect", "option1", "f%oo")
-        self.assertEqual(cf.get('sect', "option1"), "f%oo")
-
-        # bug #5741: double percents are *not* malformed
-        cf.set("sect", "option2", "foo%%bar")
-        self.assertEqual(cf.get("sect", "option2"), "foo%%bar")
-
-
 class ConfigParserTestCaseInvalidInterpolationType(unittest.TestCase):
     def test_error_on_wrong_type_for_interpolation(self):
         for value in [configparser.ExtendedInterpolation,  42,  "a string"]:
@@ -1161,7 +1126,7 @@ class RawConfigParserTestSambaConf(CfgParserTestCaseClass, unittest.TestCase):
     empty_lines_in_values = False
 
     def test_reading(self):
-        smbconf = support.findfile("cfgparser.2")
+        smbconf = support.findfile("cfgparser.2", subdir="configdata")
         # check when we pass a mix of readable and non-readable files:
         cf = self.newconfig()
         parsed_files = cf.read([smbconf, "nonexistent-file"], encoding='utf-8')
@@ -1356,7 +1321,7 @@ class ConfigParserTestCaseTrickyFile(CfgParserTestCaseClass, unittest.TestCase):
     allow_no_value = True
 
     def test_cfgparser_dot_3(self):
-        tricky = support.findfile("cfgparser.3")
+        tricky = support.findfile("cfgparser.3", subdir="configdata")
         cf = self.newconfig()
         self.assertEqual(len(cf.read(tricky, encoding='utf-8')), 1)
         self.assertEqual(cf.sections(), ['strange',
@@ -1388,7 +1353,7 @@ def test_cfgparser_dot_3(self):
         self.assertEqual(cf.get('more interpolation', 'lets'), 'go shopping')
 
     def test_unicode_failure(self):
-        tricky = support.findfile("cfgparser.3")
+        tricky = support.findfile("cfgparser.3", subdir="configdata")
         cf = self.newconfig()
         with self.assertRaises(UnicodeDecodeError):
             cf.read(tricky, encoding='ascii')
@@ -1489,7 +1454,7 @@ def fromstring(self, string, defaults=None):
 
 class FakeFile:
     def __init__(self):
-        file_path = support.findfile("cfgparser.1")
+        file_path = support.findfile("cfgparser.1", subdir="configdata")
         with open(file_path, encoding="utf-8") as f:
             self.lines = f.readlines()
             self.lines.reverse()
@@ -1510,7 +1475,7 @@ def readline_generator(f):
 
 class ReadFileTestCase(unittest.TestCase):
     def test_file(self):
-        file_paths = [support.findfile("cfgparser.1")]
+        file_paths = [support.findfile("cfgparser.1", subdir="configdata")]
         try:
             file_paths.append(file_paths[0].encode('utf8'))
         except UnicodeEncodeError:
@@ -1636,14 +1601,6 @@ def test_interpolation_validation(self):
         self.assertEqual(str(cm.exception), "bad interpolation variable "
                                             "reference '%(()'")
 
-    def test_legacyinterpolation_deprecation(self):
-        with warnings.catch_warnings(record=True) as w:
-            warnings.simplefilter("always", DeprecationWarning)
-            configparser.LegacyInterpolation()
-        self.assertGreaterEqual(len(w), 1)
-        for warning in w:
-            self.assertIs(warning.category, DeprecationWarning)
-
     def test_sectionproxy_repr(self):
         parser = configparser.ConfigParser()
         parser.read_string("""
diff --git a/Lib/test/test_context.py b/Lib/test/test_context.py
index b1aece4f5c9c49..255be306156c0b 100644
--- a/Lib/test/test_context.py
+++ b/Lib/test/test_context.py
@@ -6,10 +6,11 @@
 import time
 import unittest
 import weakref
+from test import support
 from test.support import threading_helper
 
 try:
-    from _testcapi import hamt
+    from _testinternalcapi import hamt
 except ImportError:
     hamt = None
 
@@ -431,7 +432,7 @@ class EqError(Exception):
     pass
 
 
-@unittest.skipIf(hamt is None, '_testcapi lacks "hamt()" function')
+@unittest.skipIf(hamt is None, '_testinternalcapi.hamt() not available')
 class HamtTest(unittest.TestCase):
 
     def test_hashkey_helper_1(self):
@@ -570,6 +571,7 @@ def test_hamt_collision_3(self):
 
         self.assertEqual({k.name for k in h.keys()}, {'C', 'D', 'E'})
 
+    @support.requires_resource('cpu')
     def test_hamt_stress(self):
         COLLECTION_SIZE = 7000
         TEST_ITERS_EVERY = 647
diff --git a/Lib/test/test_contextlib.py b/Lib/test/test_contextlib.py
index 0f8351ab8108a6..36c3abca80f894 100644
--- a/Lib/test/test_contextlib.py
+++ b/Lib/test/test_contextlib.py
@@ -24,6 +24,16 @@ def __exit__(self, *args):
         manager = DefaultEnter()
         self.assertIs(manager.__enter__(), manager)
 
+    def test_slots(self):
+        class DefaultContextManager(AbstractContextManager):
+            __slots__ = ()
+
+            def __exit__(self, *args):
+                super().__exit__(*args)
+
+        with self.assertRaises(AttributeError):
+            DefaultContextManager().var = 42
+
     def test_exit_is_abstract(self):
         class MissingExit(AbstractContextManager):
             pass
@@ -157,9 +167,46 @@ def whoo():
                 yield
         ctx = whoo()
         ctx.__enter__()
-        self.assertRaises(
-            RuntimeError, ctx.__exit__, TypeError, TypeError("foo"), None
-        )
+        with self.assertRaises(RuntimeError):
+            ctx.__exit__(TypeError, TypeError("foo"), None)
+        if support.check_impl_detail(cpython=True):
+            # The "gen" attribute is an implementation detail.
+            self.assertFalse(ctx.gen.gi_suspended)
+
+    def test_contextmanager_trap_no_yield(self):
+        @contextmanager
+        def whoo():
+            if False:
+                yield
+        ctx = whoo()
+        with self.assertRaises(RuntimeError):
+            ctx.__enter__()
+
+    def test_contextmanager_trap_second_yield(self):
+        @contextmanager
+        def whoo():
+            yield
+            yield
+        ctx = whoo()
+        ctx.__enter__()
+        with self.assertRaises(RuntimeError):
+            ctx.__exit__(None, None, None)
+        if support.check_impl_detail(cpython=True):
+            # The "gen" attribute is an implementation detail.
+            self.assertFalse(ctx.gen.gi_suspended)
+
+    def test_contextmanager_non_normalised(self):
+        @contextmanager
+        def whoo():
+            try:
+                yield
+            except RuntimeError:
+                raise SyntaxError
+
+        ctx = whoo()
+        ctx.__enter__()
+        with self.assertRaises(SyntaxError):
+            ctx.__exit__(RuntimeError, None, None)
 
     def test_contextmanager_except(self):
         state = []
@@ -240,6 +287,25 @@ def test_issue29692():
             self.assertEqual(ex.args[0], 'issue29692:Unchained')
             self.assertIsNone(ex.__cause__)
 
+    def test_contextmanager_wrap_runtimeerror(self):
+        @contextmanager
+        def woohoo():
+            try:
+                yield
+            except Exception as exc:
+                raise RuntimeError(f'caught {exc}') from exc
+
+        with self.assertRaises(RuntimeError):
+            with woohoo():
+                1 / 0
+
+        # If the context manager wrapped StopIteration in a RuntimeError,
+        # we also unwrap it, because we can't tell whether the wrapping was
+        # done by the generator machinery or by the generator itself.
+        with self.assertRaises(StopIteration):
+            with woohoo():
+                raise StopIteration
+
     def _create_contextmanager_attribs(self):
         def attribs(**kw):
             def decorate(func):
@@ -251,6 +317,7 @@ def decorate(func):
         @attribs(foo='bar')
         def baz(spam):
             """Whee!"""
+            yield
         return baz
 
     def test_contextmanager_attribs(self):
@@ -307,8 +374,11 @@ def woohoo(a, *, b):
 
     def test_recursive(self):
         depth = 0
+        ncols = 0
         @contextmanager
         def woohoo():
+            nonlocal ncols
+            ncols += 1
             nonlocal depth
             before = depth
             depth += 1
@@ -322,6 +392,7 @@ def recursive():
                 recursive()
 
         recursive()
+        self.assertEqual(ncols, 10)
         self.assertEqual(depth, 0)
 
 
@@ -1075,7 +1146,7 @@ def first():
 class TestExitStack(TestBaseExitStack, unittest.TestCase):
     exit_stack = ExitStack
     callback_error_internal_frames = [
-        ('__exit__', 'raise exc_details[1]'),
+        ('__exit__', 'raise exc'),
         ('__exit__', 'if cb(*exc_details):'),
     ]
 
@@ -1226,6 +1297,24 @@ def test_exception_groups(self):
                 [KeyError("ke1"), KeyError("ke2")],
             ),
         )
+        # Check handling of BaseExceptionGroup, using GeneratorExit so that
+        # we don't accidentally discard a ctrl-c with KeyboardInterrupt.
+        with suppress(GeneratorExit):
+            raise BaseExceptionGroup("message", [GeneratorExit()])
+        # If we raise a BaseException group, we can still suppress parts
+        with self.assertRaises(BaseExceptionGroup) as eg1:
+            with suppress(KeyError):
+                raise BaseExceptionGroup("message", [GeneratorExit("g"), KeyError("k")])
+        self.assertExceptionIsLike(
+            eg1.exception, BaseExceptionGroup("message", [GeneratorExit("g")]),
+        )
+        # If we suppress all the leaf BaseExceptions, we get a non-base ExceptionGroup
+        with self.assertRaises(ExceptionGroup) as eg1:
+            with suppress(GeneratorExit):
+                raise BaseExceptionGroup("message", [GeneratorExit("g"), KeyError("k")])
+        self.assertExceptionIsLike(
+            eg1.exception, ExceptionGroup("message", [KeyError("k")]),
+        )
 
 
 class TestChdir(unittest.TestCase):
@@ -1247,7 +1336,7 @@ def test_simple(self):
     def test_reentrant(self):
         old_cwd = os.getcwd()
         target1 = self.make_relative_path('data')
-        target2 = self.make_relative_path('ziptestdata')
+        target2 = self.make_relative_path('archivetestdata')
         self.assertNotIn(old_cwd, (target1, target2))
         chdir1, chdir2 = chdir(target1), chdir(target2)
 
diff --git a/Lib/test/test_contextlib_async.py b/Lib/test/test_contextlib_async.py
index 3d43ed0fcab168..ca7315783b9674 100644
--- a/Lib/test/test_contextlib_async.py
+++ b/Lib/test/test_contextlib_async.py
@@ -2,7 +2,6 @@
 from contextlib import (
     asynccontextmanager, AbstractAsyncContextManager,
     AsyncExitStack, nullcontext, aclosing, contextmanager)
-import functools
 from test import support
 import unittest
 import traceback
@@ -11,21 +10,12 @@
 
 support.requires_working_socket(module=True)
 
-def _async_test(func):
-    """Decorator to turn an async function into a test case."""
-    @functools.wraps(func)
-    def wrapper(*args, **kwargs):
-        coro = func(*args, **kwargs)
-        asyncio.run(coro)
-    return wrapper
-
 def tearDownModule():
     asyncio.set_event_loop_policy(None)
 
 
-class TestAbstractAsyncContextManager(unittest.TestCase):
+class TestAbstractAsyncContextManager(unittest.IsolatedAsyncioTestCase):
 
-    @_async_test
     async def test_enter(self):
         class DefaultEnter(AbstractAsyncContextManager):
             async def __aexit__(self, *args):
@@ -37,7 +27,17 @@ async def __aexit__(self, *args):
         async with manager as context:
             self.assertIs(manager, context)
 
-    @_async_test
+    async def test_slots(self):
+        class DefaultAsyncContextManager(AbstractAsyncContextManager):
+            __slots__ = ()
+
+            async def __aexit__(self, *args):
+                await super().__aexit__(*args)
+
+        with self.assertRaises(AttributeError):
+            manager = DefaultAsyncContextManager()
+            manager.var = 42
+
     async def test_async_gen_propagates_generator_exit(self):
         # A regression test for https://bugs.python.org/issue33786.
 
@@ -49,15 +49,11 @@ async def gen():
             async with ctx():
                 yield 11
 
-        ret = []
-        exc = ValueError(22)
-        with self.assertRaises(ValueError):
-            async with ctx():
-                async for val in gen():
-                    ret.append(val)
-                    raise exc
-
-        self.assertEqual(ret, [11])
+        g = gen()
+        async for val in g:
+            self.assertEqual(val, 11)
+            break
+        await g.aclose()
 
     def test_exit_is_abstract(self):
         class MissingAexit(AbstractAsyncContextManager):
@@ -92,9 +88,8 @@ class NoneAexit(ManagerFromScratch):
         self.assertFalse(issubclass(NoneAexit, AbstractAsyncContextManager))
 
 
-class AsyncContextManagerTestCase(unittest.TestCase):
+class AsyncContextManagerTestCase(unittest.IsolatedAsyncioTestCase):
 
-    @_async_test
     async def test_contextmanager_plain(self):
         state = []
         @asynccontextmanager
@@ -108,7 +103,6 @@ async def woohoo():
             state.append(x)
         self.assertEqual(state, [1, 42, 999])
 
-    @_async_test
     async def test_contextmanager_finally(self):
         state = []
         @asynccontextmanager
@@ -126,7 +120,6 @@ async def woohoo():
                 raise ZeroDivisionError()
         self.assertEqual(state, [1, 42, 999])
 
-    @_async_test
     async def test_contextmanager_traceback(self):
         @asynccontextmanager
         async def f():
@@ -182,7 +175,6 @@ class StopAsyncIterationSubclass(StopAsyncIteration):
                 self.assertEqual(frames[0].name, 'test_contextmanager_traceback')
                 self.assertEqual(frames[0].line, 'raise stop_exc')
 
-    @_async_test
     async def test_contextmanager_no_reraise(self):
         @asynccontextmanager
         async def whee():
@@ -192,7 +184,6 @@ async def whee():
         # Calling __aexit__ should not result in an exception
         self.assertFalse(await ctx.__aexit__(TypeError, TypeError("foo"), None))
 
-    @_async_test
     async def test_contextmanager_trap_yield_after_throw(self):
         @asynccontextmanager
         async def whoo():
@@ -204,8 +195,10 @@ async def whoo():
         await ctx.__aenter__()
         with self.assertRaises(RuntimeError):
             await ctx.__aexit__(TypeError, TypeError('foo'), None)
+        if support.check_impl_detail(cpython=True):
+            # The "gen" attribute is an implementation detail.
+            self.assertFalse(ctx.gen.ag_suspended)
 
-    @_async_test
     async def test_contextmanager_trap_no_yield(self):
         @asynccontextmanager
         async def whoo():
@@ -215,7 +208,6 @@ async def whoo():
         with self.assertRaises(RuntimeError):
             await ctx.__aenter__()
 
-    @_async_test
     async def test_contextmanager_trap_second_yield(self):
         @asynccontextmanager
         async def whoo():
@@ -225,8 +217,10 @@ async def whoo():
         await ctx.__aenter__()
         with self.assertRaises(RuntimeError):
             await ctx.__aexit__(None, None, None)
+        if support.check_impl_detail(cpython=True):
+            # The "gen" attribute is an implementation detail.
+            self.assertFalse(ctx.gen.ag_suspended)
 
-    @_async_test
     async def test_contextmanager_non_normalised(self):
         @asynccontextmanager
         async def whoo():
@@ -240,7 +234,6 @@ async def whoo():
         with self.assertRaises(SyntaxError):
             await ctx.__aexit__(RuntimeError, None, None)
 
-    @_async_test
     async def test_contextmanager_except(self):
         state = []
         @asynccontextmanager
@@ -258,7 +251,6 @@ async def woohoo():
             raise ZeroDivisionError(999)
         self.assertEqual(state, [1, 42, 999])
 
-    @_async_test
     async def test_contextmanager_except_stopiter(self):
         @asynccontextmanager
         async def woohoo():
@@ -285,7 +277,6 @@ class StopAsyncIterationSubclass(StopAsyncIteration):
                 else:
                     self.fail(f'{stop_exc} was suppressed')
 
-    @_async_test
     async def test_contextmanager_wrap_runtimeerror(self):
         @asynccontextmanager
         async def woohoo():
@@ -330,14 +321,12 @@ def test_contextmanager_doc_attrib(self):
         self.assertEqual(baz.__doc__, "Whee!")
 
     @support.requires_docstrings
-    @_async_test
     async def test_instance_docstring_given_cm_docstring(self):
         baz = self._create_contextmanager_attribs()(None)
         self.assertEqual(baz.__doc__, "Whee!")
         async with baz:
             pass  # suppress warning
 
-    @_async_test
     async def test_keywords(self):
         # Ensure no keyword arguments are inhibited
         @asynccontextmanager
@@ -346,7 +335,6 @@ async def woohoo(self, func, args, kwds):
         async with woohoo(self=11, func=22, args=33, kwds=44) as target:
             self.assertEqual(target, (11, 22, 33, 44))
 
-    @_async_test
     async def test_recursive(self):
         depth = 0
         ncols = 0
@@ -373,7 +361,6 @@ async def recursive():
         self.assertEqual(ncols, 10)
         self.assertEqual(depth, 0)
 
-    @_async_test
     async def test_decorator(self):
         entered = False
 
@@ -392,7 +379,6 @@ async def test():
         await test()
         self.assertFalse(entered)
 
-    @_async_test
     async def test_decorator_with_exception(self):
         entered = False
 
@@ -415,7 +401,6 @@ async def test():
             await test()
         self.assertFalse(entered)
 
-    @_async_test
     async def test_decorating_method(self):
 
         @asynccontextmanager
@@ -450,7 +435,7 @@ async def method(self, a, b, c=None):
         self.assertEqual(test.b, 2)
 
 
-class AclosingTestCase(unittest.TestCase):
+class AclosingTestCase(unittest.IsolatedAsyncioTestCase):
 
     @support.requires_docstrings
     def test_instance_docs(self):
@@ -458,7 +443,6 @@ def test_instance_docs(self):
         obj = aclosing(None)
         self.assertEqual(obj.__doc__, cm_docstring)
 
-    @_async_test
     async def test_aclosing(self):
         state = []
         class C:
@@ -470,7 +454,6 @@ async def aclose(self):
             self.assertEqual(x, y)
         self.assertEqual(state, [1])
 
-    @_async_test
     async def test_aclosing_error(self):
         state = []
         class C:
@@ -484,7 +467,6 @@ async def aclose(self):
                 1 / 0
         self.assertEqual(state, [1])
 
-    @_async_test
     async def test_aclosing_bpo41229(self):
         state = []
 
@@ -510,7 +492,7 @@ async def agenfunc():
         self.assertEqual(state, [1])
 
 
-class TestAsyncExitStack(TestBaseExitStack, unittest.TestCase):
+class TestAsyncExitStack(TestBaseExitStack, unittest.IsolatedAsyncioTestCase):
     class SyncAsyncExitStack(AsyncExitStack):
         @staticmethod
         def run_coroutine(coro):
@@ -545,17 +527,10 @@ def __exit__(self, *exc_details):
         ('__exit__', 'return self.run_coroutine(self.__aexit__(*exc_details))'),
         ('run_coroutine', 'raise exc'),
         ('run_coroutine', 'raise exc'),
-        ('__aexit__', 'raise exc_details[1]'),
+        ('__aexit__', 'raise exc'),
         ('__aexit__', 'cb_suppress = cb(*exc_details)'),
     ]
 
-    def setUp(self):
-        self.loop = asyncio.new_event_loop()
-        asyncio.set_event_loop(self.loop)
-        self.addCleanup(self.loop.close)
-        self.addCleanup(asyncio.set_event_loop_policy, None)
-
-    @_async_test
     async def test_async_callback(self):
         expected = [
             ((), {}),
@@ -598,7 +573,6 @@ async def _exit(*args, **kwds):
                 stack.push_async_callback(callback=_exit, arg=3)
         self.assertEqual(result, [])
 
-    @_async_test
     async def test_async_push(self):
         exc_raised = ZeroDivisionError
         async def _expect_exc(exc_type, exc, exc_tb):
@@ -634,7 +608,6 @@ async def __aexit__(self, *exc_details):
             self.assertIs(stack._exit_callbacks[-1][1], _expect_exc)
             1/0
 
-    @_async_test
     async def test_enter_async_context(self):
         class TestCM(object):
             async def __aenter__(self):
@@ -656,7 +629,6 @@ async def _exit():
 
         self.assertEqual(result, [1, 2, 3, 4])
 
-    @_async_test
     async def test_enter_async_context_errors(self):
         class LacksEnterAndExit:
             pass
@@ -676,7 +648,6 @@ async def __aenter__(self):
                 await stack.enter_async_context(LacksExit())
             self.assertFalse(stack._exit_callbacks)
 
-    @_async_test
     async def test_async_exit_exception_chaining(self):
         # Ensure exception chaining matches the reference behaviour
         async def raise_exc(exc):
@@ -708,7 +679,6 @@ async def suppress_exc(*exc_details):
         self.assertIsInstance(inner_exc, ValueError)
         self.assertIsInstance(inner_exc.__context__, ZeroDivisionError)
 
-    @_async_test
     async def test_async_exit_exception_explicit_none_context(self):
         # Ensure AsyncExitStack chaining matches actual nested `with` statements
         # regarding explicit __context__ = None.
@@ -743,7 +713,6 @@ async def my_cm_with_exit_stack():
                 else:
                     self.fail("Expected IndexError, but no exception was raised")
 
-    @_async_test
     async def test_instance_bypass_async(self):
         class Example(object): pass
         cm = Example()
@@ -756,8 +725,7 @@ class Example(object): pass
         self.assertIs(stack._exit_callbacks[-1][1], cm)
 
 
-class TestAsyncNullcontext(unittest.TestCase):
-    @_async_test
+class TestAsyncNullcontext(unittest.IsolatedAsyncioTestCase):
     async def test_async_nullcontext(self):
         class C:
             pass
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py
index 826e46824e004c..89102373759ca0 100644
--- a/Lib/test/test_copy.py
+++ b/Lib/test/test_copy.py
@@ -4,7 +4,7 @@
 import copyreg
 import weakref
 import abc
-from operator import le, lt, ge, gt, eq, ne
+from operator import le, lt, ge, gt, eq, ne, attrgetter
 
 import unittest
 from test import support
@@ -899,7 +899,81 @@ def m(self):
         g.b()
 
 
+class TestReplace(unittest.TestCase):
+
+    def test_unsupported(self):
+        self.assertRaises(TypeError, copy.replace, 1)
+        self.assertRaises(TypeError, copy.replace, [])
+        self.assertRaises(TypeError, copy.replace, {})
+        def f(): pass
+        self.assertRaises(TypeError, copy.replace, f)
+        class A: pass
+        self.assertRaises(TypeError, copy.replace, A)
+        self.assertRaises(TypeError, copy.replace, A())
+
+    def test_replace_method(self):
+        class A:
+            def __new__(cls, x, y=0):
+                self = object.__new__(cls)
+                self.x = x
+                self.y = y
+                return self
+
+            def __init__(self, *args, **kwargs):
+                self.z = self.x + self.y
+
+            def __replace__(self, **changes):
+                x = changes.get('x', self.x)
+                y = changes.get('y', self.y)
+                return type(self)(x, y)
+
+        attrs = attrgetter('x', 'y', 'z')
+        a = A(11, 22)
+        self.assertEqual(attrs(copy.replace(a)), (11, 22, 33))
+        self.assertEqual(attrs(copy.replace(a, x=1)), (1, 22, 23))
+        self.assertEqual(attrs(copy.replace(a, y=2)), (11, 2, 13))
+        self.assertEqual(attrs(copy.replace(a, x=1, y=2)), (1, 2, 3))
+
+    def test_namedtuple(self):
+        from collections import namedtuple
+        from typing import NamedTuple
+        PointFromCall = namedtuple('Point', 'x y', defaults=(0,))
+        class PointFromInheritance(PointFromCall):
+            pass
+        class PointFromClass(NamedTuple):
+            x: int
+            y: int = 0
+        for Point in (PointFromCall, PointFromInheritance, PointFromClass):
+            with self.subTest(Point=Point):
+                p = Point(11, 22)
+                self.assertIsInstance(p, Point)
+                self.assertEqual(copy.replace(p), (11, 22))
+                self.assertIsInstance(copy.replace(p), Point)
+                self.assertEqual(copy.replace(p, x=1), (1, 22))
+                self.assertEqual(copy.replace(p, y=2), (11, 2))
+                self.assertEqual(copy.replace(p, x=1, y=2), (1, 2))
+                with self.assertRaisesRegex(TypeError, 'unexpected field name'):
+                    copy.replace(p, x=1, error=2)
+
+    def test_dataclass(self):
+        from dataclasses import dataclass
+        @dataclass
+        class C:
+            x: int
+            y: int = 0
+
+        attrs = attrgetter('x', 'y')
+        c = C(11, 22)
+        self.assertEqual(attrs(copy.replace(c)), (11, 22))
+        self.assertEqual(attrs(copy.replace(c, x=1)), (1, 22))
+        self.assertEqual(attrs(copy.replace(c, y=2)), (11, 2))
+        self.assertEqual(attrs(copy.replace(c, x=1, y=2)), (1, 2))
+        with self.assertRaisesRegex(TypeError, 'unexpected keyword argument'):
+            copy.replace(c, x=1, error=2)
+
+
 def global_foo(x, y): return x+y
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_coroutines.py b/Lib/test/test_coroutines.py
index 47145782c0f04f..25c981d1511bc1 100644
--- a/Lib/test/test_coroutines.py
+++ b/Lib/test/test_coroutines.py
@@ -2216,6 +2216,14 @@ async def f():
             gen.cr_frame.clear()
         gen.close()
 
+    def test_cr_frame_after_close(self):
+        async def f():
+            pass
+        gen = f()
+        self.assertIsNotNone(gen.cr_frame)
+        gen.close()
+        self.assertIsNone(gen.cr_frame)
+
     def test_stack_in_coroutine_throw(self):
         # Regression test for https://github.com/python/cpython/issues/93592
         async def a():
diff --git a/Lib/test/test_cppext.py b/Lib/test/test_cppext.py
deleted file mode 100644
index 4fb62d87e860fc..00000000000000
--- a/Lib/test/test_cppext.py
+++ /dev/null
@@ -1,114 +0,0 @@
-# gh-91321: Build a basic C++ test extension to check that the Python C API is
-# compatible with C++ and does not emit C++ compiler warnings.
-import os.path
-import shutil
-import sys
-import unittest
-import subprocess
-import sysconfig
-from test import support
-from test.support import os_helper
-
-
-MS_WINDOWS = (sys.platform == 'win32')
-
-
-SETUP_TESTCPPEXT = support.findfile('setup_testcppext.py')
-
-
-@support.requires_subprocess()
-class TestCPPExt(unittest.TestCase):
-    def test_build_cpp11(self):
-        self.check_build(False, '_testcpp11ext')
-
-    def test_build_cpp03(self):
-        self.check_build(True, '_testcpp03ext')
-
-    # With MSVC, the linker fails with: cannot open file 'python311.lib'
-    # https://github.com/python/cpython/pull/32175#issuecomment-1111175897
-    @unittest.skipIf(MS_WINDOWS, 'test fails on Windows')
-    # Building and running an extension in clang sanitizing mode is not
-    # straightforward
-    @unittest.skipIf(
-        '-fsanitize' in (sysconfig.get_config_var('PY_CFLAGS') or ''),
-        'test does not work with analyzing builds')
-    # the test uses venv+pip: skip if it's not available
-    @support.requires_venv_with_pip()
-    def check_build(self, std_cpp03, extension_name):
-        # Build in a temporary directory
-        with os_helper.temp_cwd():
-            self._check_build(std_cpp03, extension_name)
-
-    def _check_build(self, std_cpp03, extension_name):
-        pkg_dir = 'pkg'
-        os.mkdir(pkg_dir)
-        shutil.copy(SETUP_TESTCPPEXT, os.path.join(pkg_dir, "setup.py"))
-
-        venv_dir = 'env'
-        verbose = support.verbose
-
-        # Create virtual environment to get setuptools
-        cmd = [sys.executable, '-X', 'dev', '-m', 'venv', venv_dir]
-        if verbose:
-            print()
-            print('Run:', ' '.join(cmd))
-        subprocess.run(cmd, check=True)
-
-        # Get the Python executable of the venv
-        python_exe = 'python'
-        if sys.executable.endswith('.exe'):
-            python_exe += '.exe'
-        if MS_WINDOWS:
-            python = os.path.join(venv_dir, 'Scripts', python_exe)
-        else:
-            python = os.path.join(venv_dir, 'bin', python_exe)
-
-        def run_cmd(operation, cmd):
-            env = os.environ.copy()
-            env['CPYTHON_TEST_CPP_STD'] = 'c++03' if std_cpp03 else 'c++11'
-            env['CPYTHON_TEST_EXT_NAME'] = extension_name
-            if verbose:
-                print('Run:', ' '.join(cmd))
-                subprocess.run(cmd, check=True, env=env)
-            else:
-                proc = subprocess.run(cmd,
-                                      env=env,
-                                      stdout=subprocess.PIPE,
-                                      stderr=subprocess.STDOUT,
-                                      text=True)
-                if proc.returncode:
-                    print(proc.stdout, end='')
-                    self.fail(
-                        f"{operation} failed with exit code {proc.returncode}")
-
-        cmd = [python, '-X', 'dev',
-               '-m', 'pip', 'install',
-               support.findfile('setuptools-67.6.1-py3-none-any.whl'),
-               support.findfile('wheel-0.40.0-py3-none-any.whl')]
-        run_cmd('Install build dependencies', cmd)
-
-        # Build and install the C++ extension
-        cmd = [python, '-X', 'dev',
-               '-m', 'pip', 'install', '--no-build-isolation',
-               os.path.abspath(pkg_dir)]
-        run_cmd('Install', cmd)
-
-        # Do a reference run. Until we test that running python
-        # doesn't leak references (gh-94755), run it so one can manually check
-        # -X showrefcount results against this baseline.
-        cmd = [python,
-               '-X', 'dev',
-               '-X', 'showrefcount',
-               '-c', 'pass']
-        run_cmd('Reference run', cmd)
-
-        # Import the C++ extension
-        cmd = [python,
-               '-X', 'dev',
-               '-X', 'showrefcount',
-               '-c', f"import {extension_name}"]
-        run_cmd('Import', cmd)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_cppext/__init__.py b/Lib/test/test_cppext/__init__.py
new file mode 100644
index 00000000000000..c6039bd17b0662
--- /dev/null
+++ b/Lib/test/test_cppext/__init__.py
@@ -0,0 +1,92 @@
+# gh-91321: Build a basic C++ test extension to check that the Python C API is
+# compatible with C++ and does not emit C++ compiler warnings.
+import os.path
+import shutil
+import unittest
+import subprocess
+import sysconfig
+from test import support
+
+
+SOURCE = os.path.join(os.path.dirname(__file__), 'extension.cpp')
+SETUP = os.path.join(os.path.dirname(__file__), 'setup.py')
+
+
+# gh-110119: pip does not currently support 't' in the ABI flag use by
+# --disable-gil builds. Once it does, we can remove this skip.
+@unittest.skipIf(support.Py_GIL_DISABLED,
+                 'test does not work with --disable-gil')
+@support.requires_subprocess()
+class TestCPPExt(unittest.TestCase):
+    @support.requires_resource('cpu')
+    def test_build_cpp11(self):
+        self.check_build(False, '_testcpp11ext')
+
+    @support.requires_resource('cpu')
+    def test_build_cpp03(self):
+        self.check_build(True, '_testcpp03ext')
+
+    # With MSVC, the linker fails with: cannot open file 'python311.lib'
+    # https://github.com/python/cpython/pull/32175#issuecomment-1111175897
+    @unittest.skipIf(support.MS_WINDOWS, 'test fails on Windows')
+    # Building and running an extension in clang sanitizing mode is not
+    # straightforward
+    @unittest.skipIf(
+        '-fsanitize' in (sysconfig.get_config_var('PY_CFLAGS') or ''),
+        'test does not work with analyzing builds')
+    # the test uses venv+pip: skip if it's not available
+    @support.requires_venv_with_pip()
+    def check_build(self, std_cpp03, extension_name):
+        venv_dir = 'env'
+        with support.setup_venv_with_pip_setuptools_wheel(venv_dir) as python_exe:
+            self._check_build(std_cpp03, extension_name, python_exe)
+
+    def _check_build(self, std_cpp03, extension_name, python_exe):
+        pkg_dir = 'pkg'
+        os.mkdir(pkg_dir)
+        shutil.copy(SETUP, os.path.join(pkg_dir, os.path.basename(SETUP)))
+        shutil.copy(SOURCE, os.path.join(pkg_dir, os.path.basename(SOURCE)))
+
+        def run_cmd(operation, cmd):
+            env = os.environ.copy()
+            env['CPYTHON_TEST_CPP_STD'] = 'c++03' if std_cpp03 else 'c++11'
+            env['CPYTHON_TEST_EXT_NAME'] = extension_name
+            if support.verbose:
+                print('Run:', ' '.join(cmd))
+                subprocess.run(cmd, check=True, env=env)
+            else:
+                proc = subprocess.run(cmd,
+                                      env=env,
+                                      stdout=subprocess.PIPE,
+                                      stderr=subprocess.STDOUT,
+                                      text=True)
+                if proc.returncode:
+                    print(proc.stdout, end='')
+                    self.fail(
+                        f"{operation} failed with exit code {proc.returncode}")
+
+        # Build and install the C++ extension
+        cmd = [python_exe, '-X', 'dev',
+               '-m', 'pip', 'install', '--no-build-isolation',
+               os.path.abspath(pkg_dir)]
+        run_cmd('Install', cmd)
+
+        # Do a reference run. Until we test that running python
+        # doesn't leak references (gh-94755), run it so one can manually check
+        # -X showrefcount results against this baseline.
+        cmd = [python_exe,
+               '-X', 'dev',
+               '-X', 'showrefcount',
+               '-c', 'pass']
+        run_cmd('Reference run', cmd)
+
+        # Import the C++ extension
+        cmd = [python_exe,
+               '-X', 'dev',
+               '-X', 'showrefcount',
+               '-c', f"import {extension_name}"]
+        run_cmd('Import', cmd)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_cppext/extension.cpp b/Lib/test/test_cppext/extension.cpp
new file mode 100644
index 00000000000000..90669b10cb2c6d
--- /dev/null
+++ b/Lib/test/test_cppext/extension.cpp
@@ -0,0 +1,260 @@
+// gh-91321: Very basic C++ test extension to check that the Python C API is
+// compatible with C++ and does not emit C++ compiler warnings.
+//
+// The code is only built, not executed.
+
+// Always enable assertions
+#undef NDEBUG
+
+#include "Python.h"
+
+#if __cplusplus >= 201103
+#  define NAME _testcpp11ext
+#else
+#  define NAME _testcpp03ext
+#endif
+
+#define _STR(NAME) #NAME
+#define STR(NAME) _STR(NAME)
+
+PyDoc_STRVAR(_testcppext_add_doc,
+"add(x, y)\n"
+"\n"
+"Return the sum of two integers: x + y.");
+
+static PyObject *
+_testcppext_add(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    long i, j;
+    if (!PyArg_ParseTuple(args, "ll:foo", &i, &j)) {
+        return _Py_NULL;
+    }
+    long res = i + j;
+    return PyLong_FromLong(res);
+}
+
+
+// Class to test operator casting an object to PyObject*
+class StrongRef
+{
+public:
+    StrongRef(PyObject *obj) : m_obj(obj) {
+        Py_INCREF(this->m_obj);
+    }
+
+    ~StrongRef() {
+        Py_DECREF(this->m_obj);
+    }
+
+    // Cast to PyObject*: get a borrowed reference
+    inline operator PyObject*() const { return this->m_obj; }
+
+private:
+    PyObject *m_obj;  // Strong reference
+};
+
+
+static PyObject *
+test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    PyObject *obj = Py_BuildValue("(ii)", 1, 2);
+    if (obj == _Py_NULL) {
+        return _Py_NULL;
+    }
+    Py_ssize_t refcnt = Py_REFCNT(obj);
+    assert(refcnt >= 1);
+
+    // gh-92138: For backward compatibility, functions of Python C API accepts
+    // "const PyObject*". Check that using it does not emit C++ compiler
+    // warnings.
+    const PyObject *const_obj = obj;
+    Py_INCREF(const_obj);
+    Py_DECREF(const_obj);
+    PyTypeObject *type = Py_TYPE(const_obj);
+    assert(Py_REFCNT(const_obj) == refcnt);
+    assert(type == &PyTuple_Type);
+    assert(PyTuple_GET_SIZE(const_obj) == 2);
+    PyObject *one = PyTuple_GET_ITEM(const_obj, 0);
+    assert(PyLong_AsLong(one) == 1);
+
+    // gh-92898: StrongRef doesn't inherit from PyObject but has an operator to
+    // cast to PyObject*.
+    StrongRef strong_ref(obj);
+    assert(Py_TYPE(strong_ref) == &PyTuple_Type);
+    assert(Py_REFCNT(strong_ref) == (refcnt + 1));
+    Py_INCREF(strong_ref);
+    Py_DECREF(strong_ref);
+
+    // gh-93442: Pass 0 as NULL for PyObject*
+    Py_XINCREF(0);
+    Py_XDECREF(0);
+#if __cplusplus >= 201103
+    // Test nullptr passed as PyObject*
+    Py_XINCREF(nullptr);
+    Py_XDECREF(nullptr);
+#endif
+
+    Py_DECREF(obj);
+    Py_RETURN_NONE;
+}
+
+
+static PyObject *
+test_unicode(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    PyObject *str = PyUnicode_FromString("abc");
+    if (str == _Py_NULL) {
+        return _Py_NULL;
+    }
+
+    assert(PyUnicode_Check(str));
+    assert(PyUnicode_GET_LENGTH(str) == 3);
+
+    // gh-92800: test PyUnicode_READ()
+    const void* data = PyUnicode_DATA(str);
+    assert(data != _Py_NULL);
+    int kind = PyUnicode_KIND(str);
+    assert(kind == PyUnicode_1BYTE_KIND);
+    assert(PyUnicode_READ(kind, data, 0) == 'a');
+
+    // gh-92800: test PyUnicode_READ() casts
+    const void* const_data = PyUnicode_DATA(str);
+    unsigned int ukind = static_cast<unsigned int>(kind);
+    assert(PyUnicode_READ(ukind, const_data, 2) == 'c');
+
+    assert(PyUnicode_READ_CHAR(str, 1) == 'b');
+
+    Py_DECREF(str);
+    Py_RETURN_NONE;
+}
+
+/* Test a `new`-allocated object with a virtual method.
+ * (https://github.com/python/cpython/issues/94731) */
+
+class VirtualPyObject : public PyObject {
+public:
+    VirtualPyObject();
+    virtual ~VirtualPyObject() {
+        delete [] internal_data;
+        --instance_count;
+    }
+    virtual void set_internal_data() {
+        internal_data[0] = 1;
+    }
+    static void dealloc(PyObject* o) {
+        delete static_cast<VirtualPyObject*>(o);
+    }
+
+    // Number of "living" instances
+    static int instance_count;
+private:
+    // buffer that can get corrupted
+    int* internal_data;
+};
+
+int VirtualPyObject::instance_count = 0;
+
+PyType_Slot VirtualPyObject_Slots[] = {
+    {Py_tp_free, (void*)VirtualPyObject::dealloc},
+    {0, _Py_NULL},
+};
+
+PyType_Spec VirtualPyObject_Spec = {
+    /* .name */ STR(NAME) ".VirtualPyObject",
+    /* .basicsize */ sizeof(VirtualPyObject),
+    /* .itemsize */ 0,
+    /* .flags */ Py_TPFLAGS_DEFAULT,
+    /* .slots */ VirtualPyObject_Slots,
+};
+
+VirtualPyObject::VirtualPyObject() {
+    // Create a temporary type (just so we don't need to store it)
+    PyObject *type = PyType_FromSpec(&VirtualPyObject_Spec);
+    // no good way to signal failure from a C++ constructor, so use assert
+    // for error handling
+    assert(type);
+    assert(PyObject_Init(this, (PyTypeObject *)type));
+    Py_DECREF(type);
+    internal_data = new int[50];
+    ++instance_count;
+}
+
+static PyObject *
+test_virtual_object(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    VirtualPyObject* obj = new VirtualPyObject();
+    obj->set_internal_data();
+    Py_DECREF(obj);
+    if (VirtualPyObject::instance_count != 0) {
+        return PyErr_Format(
+            PyExc_AssertionError,
+            "instance_count should be 0, got %d",
+            VirtualPyObject::instance_count);
+    }
+    Py_RETURN_NONE;
+}
+
+static PyMethodDef _testcppext_methods[] = {
+    {"add", _testcppext_add, METH_VARARGS, _testcppext_add_doc},
+    {"test_api_casts", test_api_casts, METH_NOARGS, _Py_NULL},
+    {"test_unicode", test_unicode, METH_NOARGS, _Py_NULL},
+    {"test_virtual_object", test_virtual_object, METH_NOARGS, _Py_NULL},
+    // Note: _testcppext_exec currently runs all test functions directly.
+    // When adding a new one, add a call there.
+
+    {_Py_NULL, _Py_NULL, 0, _Py_NULL}  /* sentinel */
+};
+
+
+static int
+_testcppext_exec(PyObject *module)
+{
+    if (PyModule_AddIntMacro(module, __cplusplus) < 0) {
+        return -1;
+    }
+
+    PyObject *result;
+
+    result = PyObject_CallMethod(module, "test_api_casts", "");
+    if (!result) return -1;
+    Py_DECREF(result);
+
+    result = PyObject_CallMethod(module, "test_unicode", "");
+    if (!result) return -1;
+    Py_DECREF(result);
+
+    result = PyObject_CallMethod(module, "test_virtual_object", "");
+    if (!result) return -1;
+    Py_DECREF(result);
+
+    return 0;
+}
+
+static PyModuleDef_Slot _testcppext_slots[] = {
+    {Py_mod_exec, reinterpret_cast<void*>(_testcppext_exec)},
+    {0, _Py_NULL}
+};
+
+
+PyDoc_STRVAR(_testcppext_doc, "C++ test extension.");
+
+static struct PyModuleDef _testcppext_module = {
+    PyModuleDef_HEAD_INIT,  // m_base
+    STR(NAME),  // m_name
+    _testcppext_doc,  // m_doc
+    0,  // m_size
+    _testcppext_methods,  // m_methods
+    _testcppext_slots,  // m_slots
+    _Py_NULL,  // m_traverse
+    _Py_NULL,  // m_clear
+    _Py_NULL,  // m_free
+};
+
+#define _FUNC_NAME(NAME) PyInit_ ## NAME
+#define FUNC_NAME(NAME) _FUNC_NAME(NAME)
+
+PyMODINIT_FUNC
+FUNC_NAME(NAME)(void)
+{
+    return PyModuleDef_Init(&_testcppext_module);
+}
diff --git a/Lib/test/test_cppext/setup.py b/Lib/test/test_cppext/setup.py
new file mode 100644
index 00000000000000..c7ba1efb4dd05a
--- /dev/null
+++ b/Lib/test/test_cppext/setup.py
@@ -0,0 +1,53 @@
+# gh-91321: Build a basic C++ test extension to check that the Python C API is
+# compatible with C++ and does not emit C++ compiler warnings.
+import os
+import shlex
+import sys
+import sysconfig
+from test import support
+
+from setuptools import setup, Extension
+
+
+SOURCE = 'extension.cpp'
+if not support.MS_WINDOWS:
+    # C++ compiler flags for GCC and clang
+    CPPFLAGS = [
+        # gh-91321: The purpose of _testcppext extension is to check that building
+        # a C++ extension using the Python C API does not emit C++ compiler
+        # warnings
+        '-Werror',
+    ]
+else:
+    # Don't pass any compiler flag to MSVC
+    CPPFLAGS = []
+
+
+def main():
+    cppflags = list(CPPFLAGS)
+    std = os.environ["CPYTHON_TEST_CPP_STD"]
+    name = os.environ["CPYTHON_TEST_EXT_NAME"]
+
+    cppflags = [*CPPFLAGS, f'-std={std}']
+
+    # gh-105776: When "gcc -std=11" is used as the C++ compiler, -std=c11
+    # option emits a C++ compiler warning. Remove "-std11" option from the
+    # CC command.
+    cmd = (sysconfig.get_config_var('CC') or '')
+    if cmd is not None:
+        cmd = shlex.split(cmd)
+        cmd = [arg for arg in cmd if not arg.startswith('-std=')]
+        cmd = shlex.join(cmd)
+        # CC env var overrides sysconfig CC variable in setuptools
+        os.environ['CC'] = cmd
+
+    cpp_ext = Extension(
+        name,
+        sources=[SOURCE],
+        language='c++',
+        extra_compile_args=cppflags)
+    setup(name='internal' + name, version='0.0', ext_modules=[cpp_ext])
+
+
+if __name__ == "__main__":
+    main()
diff --git a/Lib/test/test_cprofile.py b/Lib/test/test_cprofile.py
index 484b8f8e3a365c..27e8a767903777 100644
--- a/Lib/test/test_cprofile.py
+++ b/Lib/test/test_cprofile.py
@@ -66,6 +66,26 @@ def test_second_profiler(self):
         self.assertRaises(ValueError, pr2.enable)
         pr.disable()
 
+    def test_throw(self):
+        """
+        gh-106152
+        generator.throw() should trigger a call in cProfile
+        In the any() call below, there should be two entries for the generator:
+            * one for the call to __next__ which gets a True and terminates any
+            * one when the generator is garbage collected which will effectively
+              do a throw.
+        """
+        pr = self.profilerclass()
+        pr.enable()
+        any(a == 1 for a in (1, 2))
+        pr.disable()
+        pr.create_stats()
+
+        for func, (cc, nc, _, _, _) in pr.stats.items():
+            if func[2] == "<genexpr>":
+                self.assertEqual(cc, 1)
+                self.assertEqual(nc, 1)
+
 
 class TestCommandLine(unittest.TestCase):
     def test_sort(self):
diff --git a/Lib/test/test_crashers.py b/Lib/test/test_crashers.py
deleted file mode 100644
index 31b712028f8a12..00000000000000
--- a/Lib/test/test_crashers.py
+++ /dev/null
@@ -1,37 +0,0 @@
-# Tests that the crashers in the Lib/test/crashers directory actually
-# do crash the interpreter as expected
-#
-# If a crasher is fixed, it should be moved elsewhere in the test suite to
-# ensure it continues to work correctly.
-
-import unittest
-import glob
-import os.path
-import test.support
-from test.support.script_helper import assert_python_failure
-
-CRASHER_DIR = os.path.join(os.path.dirname(__file__), "crashers")
-CRASHER_FILES = os.path.join(glob.escape(CRASHER_DIR), "*.py")
-
-infinite_loops = ["infinite_loop_re.py", "nasty_eq_vs_dict.py"]
-
-class CrasherTest(unittest.TestCase):
-
-    @unittest.skip("these tests are too fragile")
-    @test.support.cpython_only
-    def test_crashers_crash(self):
-        for fname in glob.glob(CRASHER_FILES):
-            if os.path.basename(fname) in infinite_loops:
-                continue
-            # Some "crashers" only trigger an exception rather than a
-            # segfault. Consider that an acceptable outcome.
-            if test.support.verbose:
-                print("Checking crasher:", fname)
-            assert_python_failure(fname)
-
-
-def tearDownModule():
-    test.support.reap_children()
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_crypt.py b/Lib/test/test_crypt.py
deleted file mode 100644
index b2a5ce6db09195..00000000000000
--- a/Lib/test/test_crypt.py
+++ /dev/null
@@ -1,112 +0,0 @@
-import sys
-import unittest
-from test.support import check_sanitizer, warnings_helper
-
-
-try:
-    if check_sanitizer(address=True, memory=True):
-        raise unittest.SkipTest("The crypt module SEGFAULTs on ASAN/MSAN builds")
-    crypt = warnings_helper.import_deprecated("crypt")
-    IMPORT_ERROR = None
-except ImportError as ex:
-    if sys.platform != 'win32':
-        raise unittest.SkipTest(str(ex))
-    crypt = None
-    IMPORT_ERROR = str(ex)
-
-
-@unittest.skipUnless(sys.platform == 'win32', 'This should only run on windows')
-@unittest.skipIf(crypt, 'import succeeded')
-class TestWhyCryptDidNotImport(unittest.TestCase):
-
-    def test_import_failure_message(self):
-        self.assertIn('not supported', IMPORT_ERROR)
-
-
-@unittest.skipUnless(crypt, 'crypt module is required')
-class CryptTestCase(unittest.TestCase):
-
-    def test_crypt(self):
-        cr = crypt.crypt('mypassword')
-        cr2 = crypt.crypt('mypassword', cr)
-        self.assertEqual(cr2, cr)
-        cr = crypt.crypt('mypassword', 'ab')
-        if cr is not None:
-            cr2 = crypt.crypt('mypassword', cr)
-            self.assertEqual(cr2, cr)
-
-    def test_salt(self):
-        self.assertEqual(len(crypt._saltchars), 64)
-        for method in crypt.methods:
-            salt = crypt.mksalt(method)
-            self.assertIn(len(salt) - method.salt_chars, {0, 1, 3, 4, 6, 7})
-            if method.ident:
-                self.assertIn(method.ident, salt[:len(salt)-method.salt_chars])
-
-    def test_saltedcrypt(self):
-        for method in crypt.methods:
-            cr = crypt.crypt('assword', method)
-            self.assertEqual(len(cr), method.total_size)
-            cr2 = crypt.crypt('assword', cr)
-            self.assertEqual(cr2, cr)
-            cr = crypt.crypt('assword', crypt.mksalt(method))
-            self.assertEqual(len(cr), method.total_size)
-
-    def test_methods(self):
-        self.assertTrue(len(crypt.methods) >= 1)
-        if sys.platform.startswith('openbsd'):
-            self.assertEqual(crypt.methods, [crypt.METHOD_BLOWFISH])
-        else:
-            self.assertEqual(crypt.methods[-1], crypt.METHOD_CRYPT)
-
-    @unittest.skipUnless(
-        crypt
-        and (
-            crypt.METHOD_SHA256 in crypt.methods or crypt.METHOD_SHA512 in crypt.methods
-        ),
-        'requires support of SHA-2',
-    )
-    def test_sha2_rounds(self):
-        for method in (crypt.METHOD_SHA256, crypt.METHOD_SHA512):
-            for rounds in 1000, 10_000, 100_000:
-                salt = crypt.mksalt(method, rounds=rounds)
-                self.assertIn('$rounds=%d$' % rounds, salt)
-                self.assertEqual(len(salt) - method.salt_chars,
-                                 11 + len(str(rounds)))
-                cr = crypt.crypt('mypassword', salt)
-                self.assertTrue(cr)
-                cr2 = crypt.crypt('mypassword', cr)
-                self.assertEqual(cr2, cr)
-
-    @unittest.skipUnless(
-        crypt and crypt.METHOD_BLOWFISH in crypt.methods, 'requires support of Blowfish'
-    )
-    def test_blowfish_rounds(self):
-        for log_rounds in range(4, 11):
-            salt = crypt.mksalt(crypt.METHOD_BLOWFISH, rounds=1 << log_rounds)
-            self.assertIn('$%02d$' % log_rounds, salt)
-            self.assertIn(len(salt) - crypt.METHOD_BLOWFISH.salt_chars, {6, 7})
-            cr = crypt.crypt('mypassword', salt)
-            self.assertTrue(cr)
-            cr2 = crypt.crypt('mypassword', cr)
-            self.assertEqual(cr2, cr)
-
-    def test_invalid_rounds(self):
-        for method in (crypt.METHOD_SHA256, crypt.METHOD_SHA512,
-                       crypt.METHOD_BLOWFISH):
-            with self.assertRaises(TypeError):
-                crypt.mksalt(method, rounds='4096')
-            with self.assertRaises(TypeError):
-                crypt.mksalt(method, rounds=4096.0)
-            for rounds in (0, 1, -1, 1<<999):
-                with self.assertRaises(ValueError):
-                    crypt.mksalt(method, rounds=rounds)
-        with self.assertRaises(ValueError):
-            crypt.mksalt(crypt.METHOD_BLOWFISH, rounds=1000)
-        for method in (crypt.METHOD_CRYPT, crypt.METHOD_MD5):
-            with self.assertRaisesRegex(ValueError, 'support'):
-                crypt.mksalt(method, rounds=4096)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index de7ac97d72cb8e..97b9bba24bcbca 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -10,7 +10,7 @@
 import gc
 import pickle
 from test import support
-from test.support import warnings_helper, import_helper, check_disallow_instantiation
+from test.support import import_helper, check_disallow_instantiation
 from itertools import permutations
 from textwrap import dedent
 from collections import OrderedDict
@@ -281,18 +281,6 @@ def test_writerows_errors(self):
             self.assertRaises(TypeError, writer.writerows, None)
             self.assertRaises(OSError, writer.writerows, BadIterable())
 
-    @support.cpython_only
-    @support.requires_legacy_unicode_capi
-    @warnings_helper.ignore_warnings(category=DeprecationWarning)
-    def test_writerows_legacy_strings(self):
-        import _testcapi
-        c = _testcapi.unicode_legacy_string('a')
-        with TemporaryFile("w+", encoding="utf-8", newline='') as fileobj:
-            writer = csv.writer(fileobj)
-            writer.writerows([[c]])
-            fileobj.seek(0)
-            self.assertEqual(fileobj.read(), "a\r\n")
-
     def _read_test(self, input, expect, **kwargs):
         reader = csv.reader(input, **kwargs)
         result = list(reader)
@@ -955,7 +943,7 @@ def test_float_write(self):
 
     def test_char_write(self):
         import array, string
-        a = array.array('u', string.ascii_letters)
+        a = array.array('w', string.ascii_letters)
 
         with TemporaryFile("w+", encoding="utf-8", newline='') as fileobj:
             writer = csv.writer(fileobj, dialect="excel")
diff --git a/Lib/test/test_ctypes/__init__.py b/Lib/test/test_ctypes/__init__.py
index 6e496fa5a5201b..eb9126cbe18081 100644
--- a/Lib/test/test_ctypes/__init__.py
+++ b/Lib/test/test_ctypes/__init__.py
@@ -1,16 +1,10 @@
 import os
-import unittest
 from test import support
 from test.support import import_helper
 
 
-# skip tests if _ctypes was not built
-ctypes = import_helper.import_module('ctypes')
-ctypes_symbols = dir(ctypes)
-
-def need_symbol(name):
-    return unittest.skipUnless(name in ctypes_symbols,
-                               '{!r} is required'.format(name))
+# skip tests if the _ctypes extension was not built
+import_helper.import_module('ctypes')
 
 def load_tests(*args):
     return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_ctypes/test_anon.py b/Lib/test/test_ctypes/test_anon.py
index d378392ebe2844..b36397b510fefe 100644
--- a/Lib/test/test_ctypes/test_anon.py
+++ b/Lib/test/test_ctypes/test_anon.py
@@ -1,6 +1,7 @@
 import unittest
 import test.support
-from ctypes import *
+from ctypes import c_int, Union, Structure, sizeof
+
 
 class AnonTest(unittest.TestCase):
 
@@ -69,5 +70,6 @@ class Y(Structure):
         self.assertEqual(Y._.offset, sizeof(c_int))
         self.assertEqual(Y.y.offset, sizeof(c_int) * 2)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_array_in_pointer.py b/Lib/test/test_ctypes/test_array_in_pointer.py
index ca1edcf6210176..b7c96b2fa49910 100644
--- a/Lib/test/test_ctypes/test_array_in_pointer.py
+++ b/Lib/test/test_ctypes/test_array_in_pointer.py
@@ -1,21 +1,24 @@
-import unittest
-from ctypes import *
-from binascii import hexlify
+import binascii
 import re
+import unittest
+from ctypes import c_byte, Structure, POINTER, cast
+
 
 def dump(obj):
     # helper function to dump memory contents in hex, with a hyphen
     # between the bytes.
-    h = hexlify(memoryview(obj)).decode()
+    h = binascii.hexlify(memoryview(obj)).decode()
     return re.sub(r"(..)", r"\1-", h)[:-1]
 
 
 class Value(Structure):
     _fields_ = [("val", c_byte)]
 
+
 class Container(Structure):
     _fields_ = [("pvalues", POINTER(Value))]
 
+
 class Test(unittest.TestCase):
     def test(self):
         # create an array of 4 values
@@ -60,5 +63,6 @@ def test_2(self):
             ([1, 2, 3, 4], "01-02-03-04")
         )
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_arrays.py b/Lib/test/test_ctypes/test_arrays.py
index 415a5785a9c1bb..6b6cebd3e20285 100644
--- a/Lib/test/test_ctypes/test_arrays.py
+++ b/Lib/test/test_ctypes/test_arrays.py
@@ -1,15 +1,27 @@
+import ctypes
+import sys
 import unittest
+import warnings
+from ctypes import (Structure, Array, sizeof, addressof,
+                    create_string_buffer, create_unicode_buffer,
+                    c_char, c_wchar, c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulonglong, c_float, c_double, c_longdouble)
 from test.support import bigmemtest, _2G
-import sys
-from ctypes import *
 
-from test.test_ctypes import need_symbol
 
 formats = "bBhHiIlLqQfd"
 
 formats = c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint, \
           c_long, c_ulonglong, c_float, c_double, c_longdouble
 
+
+def ARRAY(*args):
+    # ignore DeprecationWarning in tests
+    with warnings.catch_warnings():
+        warnings.simplefilter('ignore', DeprecationWarning)
+        return ctypes.ARRAY(*args)
+
+
 class ArrayTestCase(unittest.TestCase):
     def test_simple(self):
         # create classes holding simple numeric types, and check
@@ -34,9 +46,9 @@ def test_simple(self):
             with self.assertRaises(IndexError): ia[-alen-1]
 
             # change the items
-            from operator import setitem
             new_values = list(range(42, 42+alen))
-            [setitem(ia, n, new_values[n]) for n in range(alen)]
+            for n in range(alen):
+                ia[n] = new_values[n]
             values = [ia[i] for i in range(alen)]
             self.assertEqual(values, new_values)
 
@@ -66,8 +78,8 @@ def test_simple(self):
         self.assertEqual(len(ca), 3)
 
         # cannot delete items
-        from operator import delitem
-        self.assertRaises(TypeError, delitem, ca, 0)
+        with self.assertRaises(TypeError):
+            del ca[0]
 
     def test_step_overflow(self):
         a = (c_int * 5)()
@@ -117,7 +129,6 @@ def test_from_address(self):
         self.assertEqual(sz[1:4:2], b"o")
         self.assertEqual(sz.value, b"foo")
 
-    @need_symbol('create_unicode_buffer')
     def test_from_addressW(self):
         p = create_unicode_buffer("foo")
         sz = (c_wchar * 3).from_address(addressof(p))
@@ -178,10 +189,10 @@ def test_bad_subclass(self):
             class T(Array):
                 pass
         with self.assertRaises(AttributeError):
-            class T(Array):
+            class T2(Array):
                 _type_ = c_int
         with self.assertRaises(AttributeError):
-            class T(Array):
+            class T3(Array):
                 _length_ = 13
 
     def test_bad_length(self):
@@ -190,15 +201,15 @@ class T(Array):
                 _type_ = c_int
                 _length_ = - sys.maxsize * 2
         with self.assertRaises(ValueError):
-            class T(Array):
+            class T2(Array):
                 _type_ = c_int
                 _length_ = -1
         with self.assertRaises(TypeError):
-            class T(Array):
+            class T3(Array):
                 _type_ = c_int
                 _length_ = 1.87
         with self.assertRaises(OverflowError):
-            class T(Array):
+            class T4(Array):
                 _type_ = c_int
                 _length_ = sys.maxsize * 2
 
@@ -234,5 +245,10 @@ def test_bpo36504_signed_int_overflow(self):
     def test_large_array(self, size):
         c_char * size
 
+    def test_deprecation(self):
+        with self.assertWarns(DeprecationWarning):
+            CharArray = ctypes.ARRAY(c_char, 3)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_as_parameter.py b/Lib/test/test_ctypes/test_as_parameter.py
index e9ec9ad847b487..a1a8745e737fa2 100644
--- a/Lib/test/test_ctypes/test_as_parameter.py
+++ b/Lib/test/test_ctypes/test_as_parameter.py
@@ -1,24 +1,30 @@
-import unittest
-from ctypes import *
-from test.test_ctypes import need_symbol
 import _ctypes_test
+import ctypes
+import unittest
+from ctypes import (Structure, CDLL, CFUNCTYPE,
+                    POINTER, pointer, byref,
+                    c_short, c_int, c_long, c_longlong,
+                    c_byte, c_wchar, c_float, c_double,
+                    ArgumentError)
+
 
 dll = CDLL(_ctypes_test.__file__)
 
 try:
-    CALLBACK_FUNCTYPE = WINFUNCTYPE
-except NameError:
+    CALLBACK_FUNCTYPE = ctypes.WINFUNCTYPE
+except AttributeError:
     # fake to enable this test on Linux
     CALLBACK_FUNCTYPE = CFUNCTYPE
 
+
 class POINT(Structure):
     _fields_ = [("x", c_int), ("y", c_int)]
 
+
 class BasicWrapTestCase(unittest.TestCase):
     def wrap(self, param):
         return param
 
-    @need_symbol('c_wchar')
     def test_wchar_parm(self):
         f = dll._testfunc_i_bhilfd
         f.argtypes = [c_byte, c_wchar, c_int, c_long, c_float, c_double]
@@ -67,8 +73,6 @@ def callback(v):
         f(self.wrap(2**18), self.wrap(cb))
         self.assertEqual(args, expected)
 
-    ################################################################
-
     def test_callbacks(self):
         f = dll._testfunc_callback_i_if
         f.restype = c_int
@@ -77,7 +81,6 @@ def test_callbacks(self):
         MyCallback = CFUNCTYPE(c_int, c_int)
 
         def callback(value):
-            #print "called back with", value
             return value
 
         cb = MyCallback(callback)
@@ -114,7 +117,6 @@ def test_callbacks_2(self):
         f.argtypes = [c_int, MyCallback]
 
         def callback(value):
-            #print "called back with", value
             self.assertEqual(type(value), int)
             return value
 
@@ -122,9 +124,7 @@ def callback(value):
         result = f(self.wrap(-10), self.wrap(cb))
         self.assertEqual(result, -18)
 
-    @need_symbol('c_longlong')
     def test_longlong_callbacks(self):
-
         f = dll._testfunc_callback_q_qf
         f.restype = c_longlong
 
@@ -192,9 +192,7 @@ class S8I(Structure):
                              (9*2, 8*3, 7*4, 6*5, 5*6, 4*7, 3*8, 2*9))
 
     def test_recursive_as_param(self):
-        from ctypes import c_int
-
-        class A(object):
+        class A:
             pass
 
         a = A()
@@ -203,18 +201,15 @@ class A(object):
             c_int.from_param(a)
 
 
-#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-class AsParamWrapper(object):
+class AsParamWrapper:
     def __init__(self, param):
         self._as_parameter_ = param
 
 class AsParamWrapperTestCase(BasicWrapTestCase):
     wrap = AsParamWrapper
 
-#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-class AsParamPropertyWrapper(object):
+class AsParamPropertyWrapper:
     def __init__(self, param):
         self._param = param
 
@@ -225,7 +220,6 @@ def getParameter(self):
 class AsParamPropertyWrapperTestCase(BasicWrapTestCase):
     wrap = AsParamPropertyWrapper
 
-#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_bitfields.py b/Lib/test/test_ctypes/test_bitfields.py
index dad71a0ba7ee4a..d43c56ad371fbd 100644
--- a/Lib/test/test_ctypes/test_bitfields.py
+++ b/Lib/test/test_ctypes/test_bitfields.py
@@ -1,10 +1,13 @@
-from ctypes import *
-from test.test_ctypes import need_symbol
-from test import support
-import unittest
+import _ctypes_test
 import os
+import unittest
+from ctypes import (CDLL, Structure, sizeof, POINTER, byref, alignment,
+                    LittleEndianStructure, BigEndianStructure,
+                    c_byte, c_ubyte, c_char, c_char_p, c_void_p, c_wchar,
+                    c_uint32, c_uint64,
+                    c_short, c_ushort, c_int, c_uint, c_long, c_ulong, c_longlong, c_ulonglong)
+from test import support
 
-import _ctypes_test
 
 class BITS(Structure):
     _fields_ = [("A", c_int, 1),
@@ -28,8 +31,6 @@ class BITS(Structure):
 func = CDLL(_ctypes_test.__file__).unpack_bitfields
 func.argtypes = POINTER(BITS), c_char
 
-##for n in "ABCDEFGHIMNOPQRS":
-##    print n, hex(getattr(BITS, n).size), getattr(BITS, n).offset
 
 class C_Test(unittest.TestCase):
 
@@ -53,6 +54,7 @@ def test_shorts(self):
                 setattr(b, name, i)
                 self.assertEqual(getattr(b, name), func(byref(b), name.encode('ascii')))
 
+
 signed_int_types = (c_byte, c_short, c_int, c_long, c_longlong)
 unsigned_int_types = (c_ubyte, c_ushort, c_uint, c_ulong, c_ulonglong)
 int_types = unsigned_int_types + signed_int_types
@@ -114,7 +116,6 @@ class X(Structure):
             x.a, x.b = 0, -1
             self.assertEqual((c_typ, x.a, x.b, x.c), (c_typ, 0, 7, 0))
 
-
     def fail_fields(self, *fields):
         return self.get_except(type(Structure), "X", (),
                                {"_fields_": fields})
@@ -140,7 +141,6 @@ class Dummy(Structure):
         result = self.fail_fields(("a", Dummy, 1))
         self.assertEqual(result, (TypeError, 'bit fields not allowed for type Dummy'))
 
-    @need_symbol('c_wchar')
     def test_c_wchar(self):
         result = self.fail_fields(("a", c_wchar, 1))
         self.assertEqual(result,
@@ -192,7 +192,6 @@ class X(Structure):
         self.assertEqual(X.b.offset, sizeof(c_short)*1)
         self.assertEqual(X.c.offset, sizeof(c_short)*2)
 
-
     def get_except(self, func, *args, **kw):
         try:
             func(*args, **kw)
@@ -245,7 +244,6 @@ class Y(Structure):
             _anonymous_ = ["_"]
             _fields_ = [("_", X)]
 
-    @need_symbol('c_uint32')
     def test_uint32(self):
         class X(Structure):
             _fields_ = [("a", c_uint32, 32)]
@@ -255,7 +253,6 @@ class X(Structure):
         x.a = 0xFDCBA987
         self.assertEqual(x.a, 0xFDCBA987)
 
-    @need_symbol('c_uint64')
     def test_uint64(self):
         class X(Structure):
             _fields_ = [("a", c_uint64, 64)]
@@ -265,7 +262,6 @@ class X(Structure):
         x.a = 0xFEDCBA9876543211
         self.assertEqual(x.a, 0xFEDCBA9876543211)
 
-    @need_symbol('c_uint32')
     def test_uint32_swap_little_endian(self):
         # Issue #23319
         class Little(LittleEndianStructure):
@@ -279,7 +275,6 @@ class Little(LittleEndianStructure):
         x.c = 2
         self.assertEqual(b, b'\xef\xcd\xab\x21')
 
-    @need_symbol('c_uint32')
     def test_uint32_swap_big_endian(self):
         # Issue #23319
         class Big(BigEndianStructure):
@@ -293,5 +288,6 @@ class Big(BigEndianStructure):
         x.c = 2
         self.assertEqual(b, b'\xab\xcd\xef\x12')
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_buffers.py b/Lib/test/test_ctypes/test_buffers.py
index a9be2023aa0fa0..468f41eb7cf4ac 100644
--- a/Lib/test/test_ctypes/test_buffers.py
+++ b/Lib/test/test_ctypes/test_buffers.py
@@ -1,9 +1,9 @@
-from ctypes import *
-from test.test_ctypes import need_symbol
 import unittest
+from ctypes import (create_string_buffer, create_unicode_buffer, sizeof,
+                    c_char, c_wchar)
 
-class StringBufferTestCase(unittest.TestCase):
 
+class StringBufferTestCase(unittest.TestCase):
     def test_buffer(self):
         b = create_string_buffer(32)
         self.assertEqual(len(b), 32)
@@ -27,7 +27,6 @@ def test_buffer_interface(self):
         self.assertEqual(len(bytearray(create_string_buffer(0))), 0)
         self.assertEqual(len(bytearray(create_string_buffer(1))), 1)
 
-    @need_symbol('c_wchar')
     def test_unicode_buffer(self):
         b = create_unicode_buffer(32)
         self.assertEqual(len(b), 32)
@@ -47,7 +46,6 @@ def test_unicode_buffer(self):
 
         self.assertRaises(TypeError, create_unicode_buffer, b"abc")
 
-    @need_symbol('c_wchar')
     def test_unicode_conversion(self):
         b = create_unicode_buffer("abc")
         self.assertEqual(len(b), 4) # trailing nul char
@@ -60,7 +58,6 @@ def test_unicode_conversion(self):
         self.assertEqual(b[::2], "ac")
         self.assertEqual(b[::5], "a")
 
-    @need_symbol('c_wchar')
     def test_create_unicode_buffer_non_bmp(self):
         expected = 5 if sizeof(c_wchar) == 2 else 3
         for s in '\U00010000\U00100000', '\U00010000\U0010ffff':
diff --git a/Lib/test/test_ctypes/test_bytes.py b/Lib/test/test_ctypes/test_bytes.py
index 092ec5af0524c4..fa11e1bbd49faf 100644
--- a/Lib/test/test_ctypes/test_bytes.py
+++ b/Lib/test/test_ctypes/test_bytes.py
@@ -1,7 +1,9 @@
 """Test where byte objects are accepted"""
-import unittest
 import sys
-from ctypes import *
+import unittest
+from _ctypes import _SimpleCData
+from ctypes import Structure, c_char, c_char_p, c_wchar, c_wchar_p
+
 
 class BytesTest(unittest.TestCase):
     def test_c_char(self):
@@ -55,7 +57,6 @@ class X(Structure):
 
     @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
     def test_BSTR(self):
-        from _ctypes import _SimpleCData
         class BSTR(_SimpleCData):
             _type_ = "X"
 
diff --git a/Lib/test/test_ctypes/test_byteswap.py b/Lib/test/test_ctypes/test_byteswap.py
index 7e98559dfbccb6..b97b57646ecd71 100644
--- a/Lib/test/test_ctypes/test_byteswap.py
+++ b/Lib/test/test_ctypes/test_byteswap.py
@@ -1,10 +1,21 @@
-import sys, unittest, struct, math, ctypes
-from binascii import hexlify
+import binascii
+import ctypes
+import math
+import struct
+import sys
+import unittest
+from ctypes import (Structure, Union, LittleEndianUnion, BigEndianUnion,
+                    BigEndianStructure, LittleEndianStructure,
+                    POINTER, sizeof, cast,
+                    c_byte, c_ubyte, c_char, c_wchar, c_void_p,
+                    c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulong, c_longlong, c_ulonglong,
+                    c_uint32, c_float, c_double)
 
-from ctypes import *
 
 def bin(s):
-    return hexlify(memoryview(s)).decode().upper()
+    return binascii.hexlify(memoryview(s)).decode().upper()
+
 
 # Each *simple* type that supports different byte orders has an
 # __ctype_be__ attribute that specifies the same type in BIG ENDIAN
@@ -14,14 +25,6 @@ def bin(s):
 # For Structures and Unions, these types are created on demand.
 
 class Test(unittest.TestCase):
-    @unittest.skip('test disabled')
-    def test_X(self):
-        print(sys.byteorder, file=sys.stderr)
-        for i in range(32):
-            bits = BITS()
-            setattr(bits, "i%s" % i, 1)
-            dump(bits)
-
     def test_slots(self):
         class BigPoint(BigEndianStructure):
             __slots__ = ()
@@ -360,5 +363,6 @@ class TestUnion(parent):
                 self.assertEqual(s.point.x, 1)
                 self.assertEqual(s.point.y, 2)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_callbacks.py b/Lib/test/test_ctypes/test_callbacks.py
index b185e388ab1527..19f4158c0ac846 100644
--- a/Lib/test/test_ctypes/test_callbacks.py
+++ b/Lib/test/test_ctypes/test_callbacks.py
@@ -1,19 +1,24 @@
+import _ctypes_test
+import ctypes
 import functools
+import gc
+import math
+import sys
 import unittest
+from _ctypes import CTYPES_MAX_ARGCOUNT
+from ctypes import (CDLL, cdll, Structure, CFUNCTYPE,
+                    ArgumentError, POINTER, sizeof,
+                    c_byte, c_ubyte, c_char,
+                    c_short, c_ushort, c_int, c_uint,
+                    c_long, c_longlong, c_ulonglong, c_ulong,
+                    c_float, c_double, c_longdouble, py_object)
+from ctypes.util import find_library
 from test import support
 
-from ctypes import *
-from test.test_ctypes import need_symbol
-from _ctypes import CTYPES_MAX_ARGCOUNT
-import _ctypes_test
 
 class Callbacks(unittest.TestCase):
     functype = CFUNCTYPE
 
-##    def tearDown(self):
-##        import gc
-##        gc.collect()
-
     def callback(self, *args):
         self.got_args = args
         return args[-1]
@@ -35,8 +40,6 @@ def check_type(self, typ, arg):
             self.assertEqual(self.got_args, (-3, arg))
             self.assertEqual(result, arg)
 
-    ################
-
     def test_byte(self):
         self.check_type(c_byte, 42)
         self.check_type(c_byte, -42)
@@ -65,18 +68,15 @@ def test_long(self):
     def test_ulong(self):
         self.check_type(c_ulong, 42)
 
-    @need_symbol('c_longlong')
     def test_longlong(self):
         self.check_type(c_longlong, 42)
         self.check_type(c_longlong, -42)
 
-    @need_symbol('c_ulonglong')
     def test_ulonglong(self):
         self.check_type(c_ulonglong, 42)
 
     def test_float(self):
         # only almost equal: double -> float -> double
-        import math
         self.check_type(c_float, math.e)
         self.check_type(c_float, -math.e)
 
@@ -84,7 +84,6 @@ def test_double(self):
         self.check_type(c_double, 3.14)
         self.check_type(c_double, -3.14)
 
-    @need_symbol('c_longdouble')
     def test_longdouble(self):
         self.check_type(c_longdouble, 3.14)
         self.check_type(c_longdouble, -3.14)
@@ -93,25 +92,16 @@ def test_char(self):
         self.check_type(c_char, b"x")
         self.check_type(c_char, b"a")
 
-    # disabled: would now (correctly) raise a RuntimeWarning about
-    # a memory leak.  A callback function cannot return a non-integral
-    # C type without causing a memory leak.
-    @unittest.skip('test disabled')
-    def test_char_p(self):
-        self.check_type(c_char_p, "abc")
-        self.check_type(c_char_p, "def")
-
     def test_pyobject(self):
         o = ()
-        from sys import getrefcount as grc
         for o in (), [], object():
-            initial = grc(o)
+            initial = sys.getrefcount(o)
             # This call leaks a reference to 'o'...
             self.check_type(py_object, o)
-            before = grc(o)
+            before = sys.getrefcount(o)
             # ...but this call doesn't leak any more.  Where is the refcount?
             self.check_type(py_object, o)
-            after = grc(o)
+            after = sys.getrefcount(o)
             self.assertEqual((after, o), (before, o))
 
     def test_unsupported_restype_1(self):
@@ -130,12 +120,11 @@ def test_unsupported_restype_2(self):
     def test_issue_7959(self):
         proto = self.functype.__func__(None)
 
-        class X(object):
+        class X:
             def func(self): pass
             def __init__(self):
                 self.v = proto(self.func)
 
-        import gc
         for i in range(32):
             X()
         gc.collect()
@@ -144,15 +133,15 @@ def __init__(self):
         self.assertEqual(len(live), 0)
 
     def test_issue12483(self):
-        import gc
         class Nasty:
             def __del__(self):
                 gc.collect()
         CFUNCTYPE(None)(lambda x=Nasty(): None)
 
-    @need_symbol('WINFUNCTYPE')
+    @unittest.skipUnless(hasattr(ctypes, 'WINFUNCTYPE'),
+                         'ctypes.WINFUNCTYPE is required')
     def test_i38748_stackCorruption(self):
-        callback_funcType = WINFUNCTYPE(c_long, c_long, c_longlong)
+        callback_funcType = ctypes.WINFUNCTYPE(c_long, c_long, c_longlong)
         @callback_funcType
         def callback(a, b):
             c = a + b
@@ -163,14 +152,10 @@ def callback(a, b):
         self.assertEqual(dll._test_i38748_runCallback(callback, 5, 10), 15)
 
 
-@need_symbol('WINFUNCTYPE')
-class StdcallCallbacks(Callbacks):
-    try:
-        functype = WINFUNCTYPE
-    except NameError:
-        pass
+if hasattr(ctypes, 'WINFUNCTYPE'):
+    class StdcallCallbacks(Callbacks):
+        functype = ctypes.WINFUNCTYPE
 
-################################################################
 
 class SampleCallbacksTestCase(unittest.TestCase):
 
@@ -195,7 +180,6 @@ def func(x):
         self.assertLess(diff, 0.01, "%s not less than 0.01" % diff)
 
     def test_issue_8959_a(self):
-        from ctypes.util import find_library
         libc_path = find_library("c")
         if not libc_path:
             self.skipTest('could not find libc')
@@ -210,19 +194,21 @@ def cmp_func(a, b):
         libc.qsort(array, len(array), sizeof(c_int), cmp_func)
         self.assertEqual(array[:], [1, 5, 7, 33, 99])
 
-    @need_symbol('WINFUNCTYPE')
+    @unittest.skipUnless(hasattr(ctypes, 'WINFUNCTYPE'),
+                         'ctypes.WINFUNCTYPE is required')
     def test_issue_8959_b(self):
         from ctypes.wintypes import BOOL, HWND, LPARAM
         global windowCount
         windowCount = 0
 
-        @WINFUNCTYPE(BOOL, HWND, LPARAM)
+        @ctypes.WINFUNCTYPE(BOOL, HWND, LPARAM)
         def EnumWindowsCallbackFunc(hwnd, lParam):
             global windowCount
             windowCount += 1
             return True #Allow windows to keep enumerating
 
-        windll.user32.EnumWindows(EnumWindowsCallbackFunc, 0)
+        user32 = ctypes.windll.user32
+        user32.EnumWindows(EnumWindowsCallbackFunc, 0)
 
     def test_callback_register_int(self):
         # Issue #8275: buggy handling of callback args under Win64
@@ -336,9 +322,9 @@ def func():
 
             self.assertIsInstance(cm.unraisable.exc_value, TypeError)
             self.assertEqual(cm.unraisable.err_msg,
-                             "Exception ignored on converting result "
-                             "of ctypes callback function")
-            self.assertIs(cm.unraisable.object, func)
+                             f"Exception ignored on converting result "
+                             f"of ctypes callback function {func!r}")
+            self.assertIsNone(cm.unraisable.object)
 
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_ctypes/test_cast.py b/Lib/test/test_ctypes/test_cast.py
index 7ee23b16f1b00b..604f44f03d61b2 100644
--- a/Lib/test/test_ctypes/test_cast.py
+++ b/Lib/test/test_ctypes/test_cast.py
@@ -1,10 +1,11 @@
-from ctypes import *
-from test.test_ctypes import need_symbol
-import unittest
 import sys
+import unittest
+from ctypes import (Structure, Union, POINTER, cast, sizeof, addressof,
+                    c_void_p, c_char_p, c_wchar_p,
+                    c_byte, c_short, c_int)
 
-class Test(unittest.TestCase):
 
+class Test(unittest.TestCase):
     def test_array2pointer(self):
         array = (c_int * 3)(42, 17, 2)
 
@@ -12,7 +13,7 @@ def test_array2pointer(self):
         ptr = cast(array, POINTER(c_int))
         self.assertEqual([ptr[i] for i in range(3)], [42, 17, 2])
 
-        if 2*sizeof(c_short) == sizeof(c_int):
+        if 2 * sizeof(c_short) == sizeof(c_int):
             ptr = cast(array, POINTER(c_short))
             if sys.byteorder == "little":
                 self.assertEqual([ptr[i] for i in range(6)],
@@ -76,11 +77,10 @@ def test_char_p(self):
         self.assertEqual(cast(cast(s, c_void_p), c_char_p).value,
                              b"hiho")
 
-    @need_symbol('c_wchar_p')
     def test_wchar_p(self):
         s = c_wchar_p("hiho")
         self.assertEqual(cast(cast(s, c_void_p), c_wchar_p).value,
-                             "hiho")
+                         "hiho")
 
     def test_bad_type_arg(self):
         # The type argument must be a ctypes pointer type.
@@ -95,5 +95,6 @@ class MyUnion(Union):
             _fields_ = [("a", c_int)]
         self.assertRaises(TypeError, cast, array, MyUnion)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_cfuncs.py b/Lib/test/test_ctypes/test_cfuncs.py
index 7cba4b0e527f4d..6ff0878a35da2f 100644
--- a/Lib/test/test_ctypes/test_cfuncs.py
+++ b/Lib/test/test_ctypes/test_cfuncs.py
@@ -1,11 +1,12 @@
-# A lot of failures in these tests on Mac OS X.
-# Byte order related?
-
+import _ctypes_test
+import ctypes
 import unittest
-from ctypes import *
-from test.test_ctypes import need_symbol
+from ctypes import (CDLL,
+                    c_byte, c_ubyte, c_char,
+                    c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulong, c_longlong, c_ulonglong,
+                    c_float, c_double, c_longdouble)
 
-import _ctypes_test
 
 class CFunctions(unittest.TestCase):
     _dll = CDLL(_ctypes_test.__file__)
@@ -111,28 +112,24 @@ def test_ulong_plus(self):
         self.assertEqual(self._dll.tf_bL(b' ', 4294967295), 1431655765)
         self.assertEqual(self.U(), 4294967295)
 
-    @need_symbol('c_longlong')
     def test_longlong(self):
         self._dll.tf_q.restype = c_longlong
         self._dll.tf_q.argtypes = (c_longlong, )
         self.assertEqual(self._dll.tf_q(-9223372036854775806), -3074457345618258602)
         self.assertEqual(self.S(), -9223372036854775806)
 
-    @need_symbol('c_longlong')
     def test_longlong_plus(self):
         self._dll.tf_bq.restype = c_longlong
         self._dll.tf_bq.argtypes = (c_byte, c_longlong)
         self.assertEqual(self._dll.tf_bq(0, -9223372036854775806), -3074457345618258602)
         self.assertEqual(self.S(), -9223372036854775806)
 
-    @need_symbol('c_ulonglong')
     def test_ulonglong(self):
         self._dll.tf_Q.restype = c_ulonglong
         self._dll.tf_Q.argtypes = (c_ulonglong, )
         self.assertEqual(self._dll.tf_Q(18446744073709551615), 6148914691236517205)
         self.assertEqual(self.U(), 18446744073709551615)
 
-    @need_symbol('c_ulonglong')
     def test_ulonglong_plus(self):
         self._dll.tf_bQ.restype = c_ulonglong
         self._dll.tf_bQ.argtypes = (c_byte, c_ulonglong)
@@ -163,14 +160,12 @@ def test_double_plus(self):
         self.assertEqual(self._dll.tf_bd(0, 42.), 14.)
         self.assertEqual(self.S(), 42)
 
-    @need_symbol('c_longdouble')
     def test_longdouble(self):
         self._dll.tf_D.restype = c_longdouble
         self._dll.tf_D.argtypes = (c_longdouble,)
         self.assertEqual(self._dll.tf_D(42.), 14.)
         self.assertEqual(self.S(), 42)
 
-    @need_symbol('c_longdouble')
     def test_longdouble_plus(self):
         self._dll.tf_bD.restype = c_longdouble
         self._dll.tf_bD.argtypes = (c_byte, c_longdouble)
@@ -195,14 +190,11 @@ def test_void(self):
         self.assertEqual(self._dll.tv_i(-42), None)
         self.assertEqual(self.S(), -42)
 
+
 # The following repeats the above tests with stdcall functions (where
 # they are available)
-try:
-    WinDLL
-except NameError:
-    def stdcall_dll(*_): pass
-else:
-    class stdcall_dll(WinDLL):
+if hasattr(ctypes, 'WinDLL'):
+    class stdcall_dll(ctypes.WinDLL):
         def __getattr__(self, name):
             if name[:2] == '__' and name[-2:] == '__':
                 raise AttributeError(name)
@@ -210,9 +202,9 @@ def __getattr__(self, name):
             setattr(self, name, func)
             return func
 
-@need_symbol('WinDLL')
-class stdcallCFunctions(CFunctions):
-    _dll = stdcall_dll(_ctypes_test.__file__)
+    class stdcallCFunctions(CFunctions):
+        _dll = stdcall_dll(_ctypes_test.__file__)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_checkretval.py b/Lib/test/test_ctypes/test_checkretval.py
index 1492099f4b9e99..5dc9e25aa38226 100644
--- a/Lib/test/test_ctypes/test_checkretval.py
+++ b/Lib/test/test_ctypes/test_checkretval.py
@@ -1,7 +1,8 @@
+import _ctypes_test
+import ctypes
 import unittest
+from ctypes import CDLL, c_int
 
-from ctypes import *
-from test.test_ctypes import need_symbol
 
 class CHECKED(c_int):
     def _check_retval_(value):
@@ -9,11 +10,9 @@ def _check_retval_(value):
         return str(value.value)
     _check_retval_ = staticmethod(_check_retval_)
 
-class Test(unittest.TestCase):
 
+class Test(unittest.TestCase):
     def test_checkretval(self):
-
-        import _ctypes_test
         dll = CDLL(_ctypes_test.__file__)
         self.assertEqual(42, dll._testfunc_p_p(42))
 
@@ -26,11 +25,12 @@ def test_checkretval(self):
         del dll._testfunc_p_p.restype
         self.assertEqual(42, dll._testfunc_p_p(42))
 
-    @need_symbol('oledll')
+    @unittest.skipUnless(hasattr(ctypes, 'oledll'),
+                         'ctypes.oledll is required')
     def test_oledll(self):
-        self.assertRaises(OSError,
-                              oledll.oleaut32.CreateTypeLib2,
-                              0, None, None)
+        oleaut32 = ctypes.oledll.oleaut32
+        self.assertRaises(OSError, oleaut32.CreateTypeLib2, 0, None, None)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_delattr.py b/Lib/test/test_ctypes/test_delattr.py
index 0f4d58691b55e7..e80b5fa6efb545 100644
--- a/Lib/test/test_ctypes/test_delattr.py
+++ b/Lib/test/test_ctypes/test_delattr.py
@@ -1,21 +1,26 @@
 import unittest
-from ctypes import *
+from ctypes import Structure, c_char, c_int
+
 
 class X(Structure):
     _fields_ = [("foo", c_int)]
 
+
 class TestCase(unittest.TestCase):
     def test_simple(self):
-        self.assertRaises(TypeError,
-                          delattr, c_int(42), "value")
+        with self.assertRaises(TypeError):
+            del c_int(42).value
 
     def test_chararray(self):
-        self.assertRaises(TypeError,
-                          delattr, (c_char * 5)(), "value")
+        chararray = (c_char * 5)()
+        with self.assertRaises(TypeError):
+            del chararray.value
 
     def test_struct(self):
-        self.assertRaises(TypeError,
-                          delattr, X(), "foo")
+        struct = X()
+        with self.assertRaises(TypeError):
+            del struct.foo
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_errno.py b/Lib/test/test_ctypes/test_errno.py
index 3685164dde6214..65d99c1e492abe 100644
--- a/Lib/test/test_ctypes/test_errno.py
+++ b/Lib/test/test_ctypes/test_errno.py
@@ -1,14 +1,18 @@
-import unittest, os, errno
+import ctypes
+import errno
+import os
 import threading
-
-from ctypes import *
+import unittest
+from ctypes import CDLL, c_int, c_char_p, c_wchar_p, get_errno, set_errno
 from ctypes.util import find_library
 
+
 class Test(unittest.TestCase):
     def test_open(self):
         libc_name = find_library("c")
         if libc_name is None:
-            raise unittest.SkipTest("Unable to find C library")
+            self.skipTest("Unable to find C library")
+
         libc = CDLL(libc_name, use_errno=True)
         if os.name == "nt":
             libc_open = libc._open
@@ -44,33 +48,34 @@ def _worker():
 
     @unittest.skipUnless(os.name == "nt", 'Test specific to Windows')
     def test_GetLastError(self):
-        dll = WinDLL("kernel32", use_last_error=True)
+        dll = ctypes.WinDLL("kernel32", use_last_error=True)
         GetModuleHandle = dll.GetModuleHandleA
         GetModuleHandle.argtypes = [c_wchar_p]
 
         self.assertEqual(0, GetModuleHandle("foo"))
-        self.assertEqual(get_last_error(), 126)
+        self.assertEqual(ctypes.get_last_error(), 126)
 
-        self.assertEqual(set_last_error(32), 126)
-        self.assertEqual(get_last_error(), 32)
+        self.assertEqual(ctypes.set_last_error(32), 126)
+        self.assertEqual(ctypes.get_last_error(), 32)
 
         def _worker():
-            set_last_error(0)
+            ctypes.set_last_error(0)
 
-            dll = WinDLL("kernel32", use_last_error=False)
+            dll = ctypes.WinDLL("kernel32", use_last_error=False)
             GetModuleHandle = dll.GetModuleHandleW
             GetModuleHandle.argtypes = [c_wchar_p]
             GetModuleHandle("bar")
 
-            self.assertEqual(get_last_error(), 0)
+            self.assertEqual(ctypes.get_last_error(), 0)
 
         t = threading.Thread(target=_worker)
         t.start()
         t.join()
 
-        self.assertEqual(get_last_error(), 32)
+        self.assertEqual(ctypes.get_last_error(), 32)
+
+        ctypes.set_last_error(0)
 
-        set_last_error(0)
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_find.py b/Lib/test/test_ctypes/test_find.py
index 1ff9d019b138a4..66ff23e72b5e10 100644
--- a/Lib/test/test_ctypes/test_find.py
+++ b/Lib/test/test_ctypes/test_find.py
@@ -1,11 +1,12 @@
-import unittest
-import unittest.mock
 import os.path
 import sys
 import test.support
-from test.support import os_helper
-from ctypes import *
+import unittest
+import unittest.mock
+from ctypes import CDLL, RTLD_GLOBAL
 from ctypes.util import find_library
+from test.support import os_helper
+
 
 # On some systems, loading the OpenGL libraries needs the RTLD_GLOBAL mode.
 class Test_OpenGL_libs(unittest.TestCase):
@@ -22,7 +23,7 @@ def setUpClass(cls):
             lib_glu = find_library("GLU")
             lib_gle = find_library("gle")
 
-        ## print, for debugging
+        # print, for debugging
         if test.support.verbose:
             print("OpenGL libraries:")
             for item in (("GL", lib_gl),
@@ -36,11 +37,13 @@ def setUpClass(cls):
                 cls.gl = CDLL(lib_gl, mode=RTLD_GLOBAL)
             except OSError:
                 pass
+
         if lib_glu:
             try:
                 cls.glu = CDLL(lib_glu, RTLD_GLOBAL)
             except OSError:
                 pass
+
         if lib_gle:
             try:
                 cls.gle = CDLL(lib_gle)
diff --git a/Lib/test/test_ctypes/test_frombuffer.py b/Lib/test/test_ctypes/test_frombuffer.py
index 55c244356b30d0..d4e161f864d409 100644
--- a/Lib/test/test_ctypes/test_frombuffer.py
+++ b/Lib/test/test_ctypes/test_frombuffer.py
@@ -1,7 +1,10 @@
-from ctypes import *
 import array
 import gc
 import unittest
+from ctypes import (Structure, Union, Array, sizeof,
+                    _Pointer, _SimpleCData, _CFuncPtr,
+                    c_char, c_int)
+
 
 class X(Structure):
     _fields_ = [("c_int", c_int)]
@@ -9,6 +12,7 @@ class X(Structure):
     def __init__(self):
         self._init_called = True
 
+
 class Test(unittest.TestCase):
     def test_from_buffer(self):
         a = array.array("i", range(16))
@@ -121,8 +125,6 @@ def test_from_buffer_copy_with_offset(self):
             (c_int * 1).from_buffer_copy(a, 16 * sizeof(c_int))
 
     def test_abstract(self):
-        from ctypes import _Pointer, _SimpleCData, _CFuncPtr
-
         self.assertRaises(TypeError, Array.from_buffer, bytearray(10))
         self.assertRaises(TypeError, Structure.from_buffer, bytearray(10))
         self.assertRaises(TypeError, Union.from_buffer, bytearray(10))
@@ -137,5 +139,6 @@ def test_abstract(self):
         self.assertRaises(TypeError, _Pointer.from_buffer_copy, b"123")
         self.assertRaises(TypeError, _SimpleCData.from_buffer_copy, b"123")
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_funcptr.py b/Lib/test/test_ctypes/test_funcptr.py
index e0b9b54e97f673..2ad40647e0cfbb 100644
--- a/Lib/test/test_ctypes/test_funcptr.py
+++ b/Lib/test/test_ctypes/test_funcptr.py
@@ -1,15 +1,19 @@
+import _ctypes_test
+import ctypes
 import unittest
-from ctypes import *
+from ctypes import (CDLL, Structure, CFUNCTYPE, sizeof, _CFuncPtr,
+                    c_void_p, c_char_p, c_char, c_int, c_uint, c_long)
+
 
 try:
-    WINFUNCTYPE
-except NameError:
+    WINFUNCTYPE = ctypes.WINFUNCTYPE
+except AttributeError:
     # fake to enable this test on Linux
     WINFUNCTYPE = CFUNCTYPE
 
-import _ctypes_test
 lib = CDLL(_ctypes_test.__file__)
 
+
 class CFuncPtrTestCase(unittest.TestCase):
     def test_basic(self):
         X = WINFUNCTYPE(c_int, c_int, c_int)
@@ -20,8 +24,8 @@ def func(*args):
         x = X(func)
         self.assertEqual(x.restype, c_int)
         self.assertEqual(x.argtypes, (c_int, c_int))
-        self.assertEqual(sizeof(x), sizeof(c_voidp))
-        self.assertEqual(sizeof(X), sizeof(c_voidp))
+        self.assertEqual(sizeof(x), sizeof(c_void_p))
+        self.assertEqual(sizeof(X), sizeof(c_void_p))
 
     def test_first(self):
         StdCallback = WINFUNCTYPE(c_int, c_int, c_int)
@@ -39,7 +43,7 @@ def func(a, b):
         # possible, as in C, to call cdecl functions with more parameters.
         #self.assertRaises(TypeError, c, 1, 2, 3)
         self.assertEqual(c(1, 2, 3, 4, 5, 6), 3)
-        if not WINFUNCTYPE is CFUNCTYPE:
+        if WINFUNCTYPE is not CFUNCTYPE:
             self.assertRaises(TypeError, s, 1, 2, 3)
 
     def test_structures(self):
@@ -69,17 +73,9 @@ class WNDCLASS(Structure):
 
         WNDPROC_2 = WINFUNCTYPE(c_long, c_int, c_int, c_int, c_int)
 
-        # This is no longer true, now that WINFUNCTYPE caches created types internally.
-        ## # CFuncPtr subclasses are compared by identity, so this raises a TypeError:
-        ## self.assertRaises(TypeError, setattr, wndclass,
-        ##                  "lpfnWndProc", WNDPROC_2(wndproc))
-        # instead:
-
         self.assertIs(WNDPROC, WNDPROC_2)
-        # 'wndclass.lpfnWndProc' leaks 94 references.  Why?
         self.assertEqual(wndclass.lpfnWndProc(1, 2, 3, 4), 10)
 
-
         f = wndclass.lpfnWndProc
 
         del wndclass
@@ -88,24 +84,14 @@ class WNDCLASS(Structure):
         self.assertEqual(f(10, 11, 12, 13), 46)
 
     def test_dllfunctions(self):
-
-        def NoNullHandle(value):
-            if not value:
-                raise WinError()
-            return value
-
         strchr = lib.my_strchr
         strchr.restype = c_char_p
         strchr.argtypes = (c_char_p, c_char)
         self.assertEqual(strchr(b"abcdefghi", b"b"), b"bcdefghi")
         self.assertEqual(strchr(b"abcdefghi", b"x"), None)
 
-
         strtok = lib.my_strtok
         strtok.restype = c_char_p
-        # Neither of this does work: strtok changes the buffer it is passed
-##        strtok.argtypes = (c_char_p, c_char_p)
-##        strtok.argtypes = (c_string, c_char_p)
 
         def c_string(init):
             size = len(init) + 1
@@ -114,19 +100,14 @@ def c_string(init):
         s = b"a\nb\nc"
         b = c_string(s)
 
-##        b = (c_char * (len(s)+1))()
-##        b.value = s
-
-##        b = c_string(s)
         self.assertEqual(strtok(b, b"\n"), b"a")
         self.assertEqual(strtok(None, b"\n"), b"b")
         self.assertEqual(strtok(None, b"\n"), b"c")
         self.assertEqual(strtok(None, b"\n"), None)
 
     def test_abstract(self):
-        from ctypes import _CFuncPtr
-
         self.assertRaises(TypeError, _CFuncPtr, 13, "name", 42, "iid")
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_functions.py b/Lib/test/test_ctypes/test_functions.py
index 703bd2c601ccf6..04e8582ff1e427 100644
--- a/Lib/test/test_ctypes/test_functions.py
+++ b/Lib/test/test_ctypes/test_functions.py
@@ -1,30 +1,35 @@
-"""
-Here is probably the place to write the docs, since the test-cases
-show how the type behave.
-
-Later...
-"""
+import _ctypes_test
+import ctypes
+import sys
+import unittest
+from ctypes import (CDLL, Structure, Array, CFUNCTYPE,
+                    byref, POINTER, pointer, ArgumentError,
+                    c_char, c_wchar, c_byte, c_char_p, c_wchar_p,
+                    c_short, c_int, c_long, c_longlong, c_void_p,
+                    c_float, c_double, c_longdouble)
+from _ctypes import _Pointer,  _SimpleCData
 
-from ctypes import *
-from test.test_ctypes import need_symbol
-import sys, unittest
 
 try:
-    WINFUNCTYPE
-except NameError:
+    WINFUNCTYPE = ctypes.WINFUNCTYPE
+except AttributeError:
     # fake to enable this test on Linux
     WINFUNCTYPE = CFUNCTYPE
 
-import _ctypes_test
 dll = CDLL(_ctypes_test.__file__)
 if sys.platform == "win32":
-    windll = WinDLL(_ctypes_test.__file__)
+    windll = ctypes.WinDLL(_ctypes_test.__file__)
+
 
 class POINT(Structure):
     _fields_ = [("x", c_int), ("y", c_int)]
+
+
 class RECT(Structure):
     _fields_ = [("left", c_int), ("top", c_int),
                 ("right", c_int), ("bottom", c_int)]
+
+
 class FunctionTestCase(unittest.TestCase):
 
     def test_mro(self):
@@ -40,18 +45,16 @@ class X(object, Array):
                 _length_ = 5
                 _type_ = "i"
 
-        from _ctypes import _Pointer
         with self.assertRaises(TypeError):
-            class X(object, _Pointer):
+            class X2(object, _Pointer):
                 pass
 
-        from _ctypes import _SimpleCData
         with self.assertRaises(TypeError):
-            class X(object, _SimpleCData):
+            class X3(object, _SimpleCData):
                 _type_ = "i"
 
         with self.assertRaises(TypeError):
-            class X(object, Structure):
+            class X4(object, Structure):
                 _fields_ = []
 
     def test_c_char_parm(self):
@@ -70,8 +73,6 @@ def callback(*args):
                          "argument 1: TypeError: one character bytes, "
                          "bytearray or integer expected")
 
-
-    @need_symbol('c_wchar')
     def test_wchar_parm(self):
         f = dll._testfunc_i_bhilfd
         f.argtypes = [c_byte, c_wchar, c_int, c_long, c_float, c_double]
@@ -91,7 +92,54 @@ def test_wchar_parm(self):
                          "argument 2: TypeError: one character unicode string "
                          "expected")
 
-    @need_symbol('c_wchar')
+    def test_c_char_p_parm(self):
+        """Test the error message when converting an incompatible type to c_char_p."""
+        proto = CFUNCTYPE(c_int, c_char_p)
+        def callback(*args):
+            return 0
+
+        callback = proto(callback)
+        self.assertEqual(callback(b"abc"), 0)
+
+        with self.assertRaises(ArgumentError) as cm:
+            callback(10)
+
+        self.assertEqual(str(cm.exception),
+                         "argument 1: TypeError: 'int' object cannot be "
+                         "interpreted as ctypes.c_char_p")
+
+    def test_c_wchar_p_parm(self):
+        """Test the error message when converting an incompatible type to c_wchar_p."""
+        proto = CFUNCTYPE(c_int, c_wchar_p)
+        def callback(*args):
+            return 0
+
+        callback = proto(callback)
+        self.assertEqual(callback("abc"), 0)
+
+        with self.assertRaises(ArgumentError) as cm:
+            callback(10)
+
+        self.assertEqual(str(cm.exception),
+                         "argument 1: TypeError: 'int' object cannot be "
+                         "interpreted as ctypes.c_wchar_p")
+
+    def test_c_void_p_parm(self):
+        """Test the error message when converting an incompatible type to c_void_p."""
+        proto = CFUNCTYPE(c_int, c_void_p)
+        def callback(*args):
+            return 0
+
+        callback = proto(callback)
+        self.assertEqual(callback(5), 0)
+
+        with self.assertRaises(ArgumentError) as cm:
+            callback(2.5)
+
+        self.assertEqual(str(cm.exception),
+                         "argument 1: TypeError: 'float' object cannot be "
+                         "interpreted as ctypes.c_void_p")
+
     def test_wchar_result(self):
         f = dll._testfunc_i_bhilfd
         f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double]
@@ -157,7 +205,6 @@ def test_doubleresult(self):
         self.assertEqual(result, -21)
         self.assertEqual(type(result), float)
 
-    @need_symbol('c_longdouble')
     def test_longdoubleresult(self):
         f = dll._testfunc_D_bhilfD
         f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_longdouble]
@@ -170,7 +217,6 @@ def test_longdoubleresult(self):
         self.assertEqual(result, -21)
         self.assertEqual(type(result), float)
 
-    @need_symbol('c_longlong')
     def test_longlongresult(self):
         f = dll._testfunc_q_bhilfd
         f.restype = c_longlong
@@ -229,7 +275,6 @@ def test_pointers(self):
         result = f(byref(c_int(99)))
         self.assertNotEqual(result.contents, 99)
 
-    ################################################################
     def test_shorts(self):
         f = dll._testfunc_callback_i_if
 
@@ -247,9 +292,6 @@ def callback(v):
         f(2**18, cb)
         self.assertEqual(args, expected)
 
-    ################################################################
-
-
     def test_callbacks(self):
         f = dll._testfunc_callback_i_if
         f.restype = c_int
@@ -258,7 +300,6 @@ def test_callbacks(self):
         MyCallback = CFUNCTYPE(c_int, c_int)
 
         def callback(value):
-            #print "called back with", value
             return value
 
         cb = MyCallback(callback)
@@ -291,7 +332,6 @@ def test_callbacks_2(self):
         f.argtypes = [c_int, MyCallback]
 
         def callback(value):
-            #print "called back with", value
             self.assertEqual(type(value), int)
             return value
 
@@ -299,7 +339,6 @@ def callback(value):
         result = f(-10, cb)
         self.assertEqual(result, -18)
 
-    @need_symbol('c_longlong')
     def test_longlong_callbacks(self):
 
         f = dll._testfunc_callback_q_qf
@@ -409,5 +448,6 @@ def callback(*args):
         callback = proto(callback)
         self.assertRaises(ArgumentError, lambda: callback((1, 2, 3, 4), POINT()))
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_incomplete.py b/Lib/test/test_ctypes/test_incomplete.py
index 00c430ef53cfa8..9f859793d88a22 100644
--- a/Lib/test/test_ctypes/test_incomplete.py
+++ b/Lib/test/test_ctypes/test_incomplete.py
@@ -1,12 +1,14 @@
+import ctypes
 import unittest
-from ctypes import *
+import warnings
+from ctypes import Structure, POINTER, pointer, c_char_p
 
-################################################################
-#
-# The incomplete pointer example from the tutorial
-#
 
-class MyTestCase(unittest.TestCase):
+# The incomplete pointer example from the tutorial
+class TestSetPointerType(unittest.TestCase):
+    def tearDown(self):
+        # to not leak references, we must clean _pointer_type_cache
+        ctypes._reset_cache()
 
     def test_incomplete_example(self):
         lpcell = POINTER("cell")
@@ -14,7 +16,9 @@ class cell(Structure):
             _fields_ = [("name", c_char_p),
                         ("next", lpcell)]
 
-        SetPointerType(lpcell, cell)
+        with warnings.catch_warnings():
+            warnings.simplefilter('ignore', DeprecationWarning)
+            ctypes.SetPointerType(lpcell, cell)
 
         c1 = cell()
         c1.name = b"foo"
@@ -32,11 +36,15 @@ class cell(Structure):
             p = p.next[0]
         self.assertEqual(result, [b"foo", b"bar"] * 4)
 
-        # to not leak references, we must clean _pointer_type_cache
-        from ctypes import _pointer_type_cache
-        del _pointer_type_cache[cell]
+    def test_deprecation(self):
+        lpcell = POINTER("cell")
+        class cell(Structure):
+            _fields_ = [("name", c_char_p),
+                        ("next", lpcell)]
+
+        with self.assertWarns(DeprecationWarning):
+            ctypes.SetPointerType(lpcell, cell)
 
-################################################################
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_init.py b/Lib/test/test_ctypes/test_init.py
index 75fad112a01ffb..113425e5823edc 100644
--- a/Lib/test/test_ctypes/test_init.py
+++ b/Lib/test/test_ctypes/test_init.py
@@ -1,5 +1,6 @@
-from ctypes import *
 import unittest
+from ctypes import Structure, c_int
+
 
 class X(Structure):
     _fields_ = [("a", c_int),
@@ -15,6 +16,7 @@ def __init__(self):
         self.a = 9
         self.b = 12
 
+
 class Y(Structure):
     _fields_ = [("x", X)]
 
@@ -36,5 +38,6 @@ def test_get(self):
         self.assertEqual((y.x.a, y.x.b), (9, 12))
         self.assertEqual(y.x.new_was_called, False)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_internals.py b/Lib/test/test_ctypes/test_internals.py
index 271e3f57f81743..94c9a86c2d06df 100644
--- a/Lib/test/test_ctypes/test_internals.py
+++ b/Lib/test/test_ctypes/test_internals.py
@@ -1,7 +1,4 @@
 # This tests the internal _objects attribute
-import unittest
-from ctypes import *
-from sys import getrefcount as grc
 
 # XXX This test must be reviewed for correctness!!!
 
@@ -14,22 +11,27 @@
 #
 # What about pointers?
 
+import sys
+import unittest
+from ctypes import Structure, POINTER, c_char_p, c_int
+
+
 class ObjectsTestCase(unittest.TestCase):
     def assertSame(self, a, b):
         self.assertEqual(id(a), id(b))
 
     def test_ints(self):
         i = 42000123
-        refcnt = grc(i)
+        refcnt = sys.getrefcount(i)
         ci = c_int(i)
-        self.assertEqual(refcnt, grc(i))
+        self.assertEqual(refcnt, sys.getrefcount(i))
         self.assertEqual(ci._objects, None)
 
     def test_c_char_p(self):
         s = b"Hello, World"
-        refcnt = grc(s)
+        refcnt = sys.getrefcount(s)
         cs = c_char_p(s)
-        self.assertEqual(refcnt + 1, grc(s))
+        self.assertEqual(refcnt + 1, sys.getrefcount(s))
         self.assertSame(cs._objects, s)
 
     def test_simple_struct(self):
@@ -78,9 +80,6 @@ class Y(Structure):
         y = Y()
         y.x = x
         self.assertEqual(y._objects, {"0": {"0": s1, "1": s2}})
-##        x = y.x
-##        del y
-##        print x._b_base_._objects
 
     def test_ptr_struct(self):
         class X(Structure):
@@ -92,9 +91,7 @@ class X(Structure):
 
         x = X()
         x.data = a
-##XXX        print x._objects
-##XXX        print x.data[0]
-##XXX        print x.data._objects
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_keeprefs.py b/Lib/test/test_ctypes/test_keeprefs.py
index 94c02573fa19d8..23b03b64b4a716 100644
--- a/Lib/test/test_ctypes/test_keeprefs.py
+++ b/Lib/test/test_ctypes/test_keeprefs.py
@@ -1,5 +1,7 @@
-from ctypes import *
 import unittest
+from ctypes import (Structure, POINTER, pointer,  _pointer_type_cache,
+                    c_char_p, c_int)
+
 
 class SimpleTestCase(unittest.TestCase):
     def test_cint(self):
@@ -18,6 +20,7 @@ def test_ccharp(self):
         x = c_char_p(b"spam")
         self.assertEqual(x._objects, b"spam")
 
+
 class StructureTestCase(unittest.TestCase):
     def test_cint_struct(self):
         class X(Structure):
@@ -64,6 +67,7 @@ class RECT(Structure):
         r.lr = POINT()
         self.assertEqual(r._objects, {'0': {}, '1': {}})
 
+
 class ArrayTestCase(unittest.TestCase):
     def test_cint_array(self):
         INTARR = c_int * 3
@@ -87,43 +91,13 @@ class X(Structure):
         x.a = ia
         self.assertEqual(x._objects, {'1': {}})
 
+
 class PointerTestCase(unittest.TestCase):
     def test_p_cint(self):
         i = c_int(42)
         x = pointer(i)
         self.assertEqual(x._objects, {'1': i})
 
-class DeletePointerTestCase(unittest.TestCase):
-    @unittest.skip('test disabled')
-    def test_X(self):
-        class X(Structure):
-            _fields_ = [("p", POINTER(c_char_p))]
-        x = X()
-        i = c_char_p("abc def")
-        from sys import getrefcount as grc
-        print("2?", grc(i))
-        x.p = pointer(i)
-        print("3?", grc(i))
-        for i in range(320):
-            c_int(99)
-            x.p[0]
-        print(x.p[0])
-##        del x
-##        print "2?", grc(i)
-##        del i
-        import gc
-        gc.collect()
-        for i in range(320):
-            c_int(99)
-            x.p[0]
-        print(x.p[0])
-        print(x.p.contents)
-##        print x._objects
-
-        x.p[0] = "spam spam"
-##        print x.p[0]
-        print("+" * 42)
-        print(x._objects)
 
 class PointerToStructure(unittest.TestCase):
     def test(self):
@@ -137,17 +111,14 @@ class RECT(Structure):
 
         r.a = pointer(p1)
         r.b = pointer(p1)
-##        from pprint import pprint as pp
-##        pp(p1._objects)
-##        pp(r._objects)
 
         r.a[0].x = 42
         r.a[0].y = 99
 
         # to avoid leaking when tests are run several times
         # clean up the types left in the cache.
-        from ctypes import _pointer_type_cache
         del _pointer_type_cache[POINT]
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_libc.py b/Lib/test/test_ctypes/test_libc.py
index 56285b5ff81512..09c76db0bd0b17 100644
--- a/Lib/test/test_ctypes/test_libc.py
+++ b/Lib/test/test_ctypes/test_libc.py
@@ -1,20 +1,23 @@
+import _ctypes_test
+import math
 import unittest
+from ctypes import (CDLL, CFUNCTYPE, POINTER, create_string_buffer, sizeof,
+                    c_void_p, c_char, c_int, c_double, c_size_t)
 
-from ctypes import *
-import _ctypes_test
 
 lib = CDLL(_ctypes_test.__file__)
 
+
 def three_way_cmp(x, y):
     """Return -1 if x < y, 0 if x == y and 1 if x > y"""
     return (x > y) - (x < y)
 
+
 class LibTest(unittest.TestCase):
     def test_sqrt(self):
         lib.my_sqrt.argtypes = c_double,
         lib.my_sqrt.restype = c_double
         self.assertEqual(lib.my_sqrt(4.0), 2.0)
-        import math
         self.assertEqual(lib.my_sqrt(2.0), math.sqrt(2.0))
 
     def test_qsort(self):
@@ -29,5 +32,6 @@ def sort(a, b):
         lib.my_qsort(chars, len(chars)-1, sizeof(c_char), comparefunc(sort))
         self.assertEqual(chars.raw, b"   ,,aaaadmmmnpppsss\x00")
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_loading.py b/Lib/test/test_ctypes/test_loading.py
index f2434926a51714..22db97b818c17e 100644
--- a/Lib/test/test_ctypes/test_loading.py
+++ b/Lib/test/test_ctypes/test_loading.py
@@ -1,16 +1,20 @@
-from ctypes import *
+import _ctypes
+import _ctypes_test
+import ctypes
 import os
 import shutil
 import subprocess
 import sys
-import unittest
 import test.support
-from test.support import import_helper
-from test.support import os_helper
+import unittest
+from ctypes import CDLL, cdll, addressof, c_void_p, c_char_p
 from ctypes.util import find_library
+from test.support import import_helper, os_helper
+
 
 libc_name = None
 
+
 def setUpModule():
     global libc_name
     if os.name == "nt":
@@ -23,6 +27,7 @@ def setUpModule():
     if test.support.verbose:
         print("libc_name is", libc_name)
 
+
 class LoaderTest(unittest.TestCase):
 
     unknowndll = "xxrandomnamexx"
@@ -32,7 +37,6 @@ def test_load(self):
             test_lib = libc_name
         else:
             if os.name == "nt":
-                import _ctypes_test
                 test_lib = _ctypes_test.__file__
             else:
                 self.skipTest('could not find library to load')
@@ -72,18 +76,17 @@ def test_load_library(self):
             print(find_library("user32"))
 
         if os.name == "nt":
-            windll.kernel32.GetModuleHandleW
-            windll["kernel32"].GetModuleHandleW
-            windll.LoadLibrary("kernel32").GetModuleHandleW
-            WinDLL("kernel32").GetModuleHandleW
+            ctypes.windll.kernel32.GetModuleHandleW
+            ctypes.windll["kernel32"].GetModuleHandleW
+            ctypes.windll.LoadLibrary("kernel32").GetModuleHandleW
+            ctypes.WinDLL("kernel32").GetModuleHandleW
             # embedded null character
-            self.assertRaises(ValueError, windll.LoadLibrary, "kernel32\0")
+            self.assertRaises(ValueError, ctypes.windll.LoadLibrary, "kernel32\0")
 
     @unittest.skipUnless(os.name == "nt",
                          'test specific to Windows')
     def test_load_ordinal_functions(self):
-        import _ctypes_test
-        dll = WinDLL(_ctypes_test.__file__)
+        dll = ctypes.WinDLL(_ctypes_test.__file__)
         # We load the same function both via ordinal and name
         func_ord = dll[2]
         func_name = dll.GetString
@@ -98,14 +101,13 @@ def test_load_ordinal_functions(self):
 
     @unittest.skipUnless(os.name == "nt", 'Windows-specific test')
     def test_1703286_A(self):
-        from _ctypes import LoadLibrary, FreeLibrary
         # On winXP 64-bit, advapi32 loads at an address that does
         # NOT fit into a 32-bit integer.  FreeLibrary must be able
         # to accept this address.
 
         # These are tests for https://bugs.python.org/issue1703286
-        handle = LoadLibrary("advapi32")
-        FreeLibrary(handle)
+        handle = _ctypes.LoadLibrary("advapi32")
+        _ctypes.FreeLibrary(handle)
 
     @unittest.skipUnless(os.name == "nt", 'Windows-specific test')
     def test_1703286_B(self):
@@ -113,24 +115,26 @@ def test_1703286_B(self):
         # above, the (arbitrarily selected) CloseEventLog function
         # also has a high address.  'call_function' should accept
         # addresses so large.
-        from _ctypes import call_function
-        advapi32 = windll.advapi32
+
+        advapi32 = ctypes.windll.advapi32
         # Calling CloseEventLog with a NULL argument should fail,
         # but the call should not segfault or so.
         self.assertEqual(0, advapi32.CloseEventLog(None))
-        windll.kernel32.GetProcAddress.argtypes = c_void_p, c_char_p
-        windll.kernel32.GetProcAddress.restype = c_void_p
-        proc = windll.kernel32.GetProcAddress(advapi32._handle,
-                                              b"CloseEventLog")
+
+        kernel32 = ctypes.windll.kernel32
+        kernel32.GetProcAddress.argtypes = c_void_p, c_char_p
+        kernel32.GetProcAddress.restype = c_void_p
+        proc = kernel32.GetProcAddress(advapi32._handle, b"CloseEventLog")
         self.assertTrue(proc)
+
         # This is the real test: call the function via 'call_function'
-        self.assertEqual(0, call_function(proc, (None,)))
+        self.assertEqual(0, _ctypes.call_function(proc, (None,)))
 
     @unittest.skipUnless(os.name == "nt",
                          'test specific to Windows')
     def test_load_hasattr(self):
         # bpo-34816: shouldn't raise OSError
-        self.assertFalse(hasattr(windll, 'test'))
+        self.assertFalse(hasattr(ctypes.windll, 'test'))
 
     @unittest.skipUnless(os.name == "nt",
                          'test specific to Windows')
@@ -193,6 +197,5 @@ def should_fail(command):
                         "WinDLL('_sqlite3.dll'); p.close()")
 
 
-
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_macholib.py b/Lib/test/test_ctypes/test_macholib.py
index bc75f1a05a8c37..9d90617995623d 100644
--- a/Lib/test/test_ctypes/test_macholib.py
+++ b/Lib/test/test_ctypes/test_macholib.py
@@ -1,7 +1,3 @@
-import os
-import sys
-import unittest
-
 # Bob Ippolito:
 #
 # Ok.. the code to find the filename for __getattr__ should look
@@ -31,10 +27,15 @@
 #
 # -bob
 
+import os
+import sys
+import unittest
+
 from ctypes.macholib.dyld import dyld_find
 from ctypes.macholib.dylib import dylib_info
 from ctypes.macholib.framework import framework_info
 
+
 def find_lib(name):
     possible = ['lib'+name+'.dylib', name+'.dylib', name+'.framework/'+name]
     for dylib in possible:
@@ -106,5 +107,6 @@ def test_framework_info(self):
         self.assertEqual(framework_info('P/F.framework/Versions/A/F_debug'),
                          d('P', 'F.framework/Versions/A/F_debug', 'F', 'A', 'debug'))
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_memfunctions.py b/Lib/test/test_ctypes/test_memfunctions.py
index d5c973521177c8..112b27ba48e07e 100644
--- a/Lib/test/test_ctypes/test_memfunctions.py
+++ b/Lib/test/test_ctypes/test_memfunctions.py
@@ -1,20 +1,23 @@
 import sys
-from test import support
 import unittest
-from ctypes import *
-from test.test_ctypes import need_symbol
+from test import support
+from ctypes import (POINTER, sizeof, cast,
+                    create_string_buffer, string_at,
+                    create_unicode_buffer, wstring_at,
+                    memmove, memset,
+                    c_char_p, c_byte, c_ubyte, c_wchar)
+
 
 class MemFunctionsTest(unittest.TestCase):
-    @unittest.skip('test disabled')
     def test_overflow(self):
         # string_at and wstring_at must use the Python calling
         # convention (which acquires the GIL and checks the Python
         # error flag).  Provoke an error and catch it; see also issue
-        # #3554: <http://bugs.python.org/issue3554>
+        # gh-47804.
         self.assertRaises((OverflowError, MemoryError, SystemError),
-                          lambda: wstring_at(u"foo", sys.maxint - 1))
+                          lambda: wstring_at(u"foo", sys.maxsize - 1))
         self.assertRaises((OverflowError, MemoryError, SystemError),
-                          lambda: string_at("foo", sys.maxint - 1))
+                          lambda: string_at("foo", sys.maxsize - 1))
 
     def test_memmove(self):
         # large buffers apparently increase the chance that the memory
@@ -63,7 +66,6 @@ def test_string_at(self):
         self.assertEqual(string_at(b"foo bar", 7), b"foo bar")
         self.assertEqual(string_at(b"foo bar", 3), b"foo")
 
-    @need_symbol('create_unicode_buffer')
     def test_wstring_at(self):
         p = create_unicode_buffer("Hello, World")
         a = create_unicode_buffer(1000000)
@@ -75,5 +77,6 @@ def test_wstring_at(self):
         self.assertEqual(wstring_at(a, 16), "Hello, World\0\0\0\0")
         self.assertEqual(wstring_at(a, 0), "")
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_numbers.py b/Lib/test/test_ctypes/test_numbers.py
index db500e812beb15..29108a28ec16e1 100644
--- a/Lib/test/test_ctypes/test_numbers.py
+++ b/Lib/test/test_ctypes/test_numbers.py
@@ -1,6 +1,13 @@
-from ctypes import *
-import unittest
+import array
 import struct
+import sys
+import unittest
+from operator import truth
+from ctypes import (byref, sizeof, alignment,
+                    c_char, c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulong, c_longlong, c_ulonglong,
+                    c_float, c_double, c_longdouble, c_bool)
+
 
 def valid_ranges(*types):
     # given a sequence of numeric types, collect their _type_
@@ -19,36 +26,18 @@ def valid_ranges(*types):
         result.append((min(a, b, c, d), max(a, b, c, d)))
     return result
 
+
 ArgType = type(byref(c_int(0)))
 
-unsigned_types = [c_ubyte, c_ushort, c_uint, c_ulong]
+unsigned_types = [c_ubyte, c_ushort, c_uint, c_ulong, c_ulonglong]
 signed_types = [c_byte, c_short, c_int, c_long, c_longlong]
-
-bool_types = []
-
+bool_types = [c_bool]
 float_types = [c_double, c_float]
 
-try:
-    c_ulonglong
-    c_longlong
-except NameError:
-    pass
-else:
-    unsigned_types.append(c_ulonglong)
-    signed_types.append(c_longlong)
-
-try:
-    c_bool
-except NameError:
-    pass
-else:
-    bool_types.append(c_bool)
-
 unsigned_ranges = valid_ranges(*unsigned_types)
 signed_ranges = valid_ranges(*signed_types)
 bool_values = [True, False, 0, 1, -1, 5000, 'test', [], [1]]
 
-################################################################
 
 class NumberTestCase(unittest.TestCase):
 
@@ -71,7 +60,6 @@ def test_signed_values(self):
             self.assertEqual(t(h).value, h)
 
     def test_bool_values(self):
-        from operator import truth
         for t, v in zip(bool_types, bool_values):
             self.assertEqual(t(v).value, truth(v))
 
@@ -82,14 +70,6 @@ def test_typeerror(self):
             self.assertRaises(TypeError, t, "")
             self.assertRaises(TypeError, t, None)
 
-    @unittest.skip('test disabled')
-    def test_valid_ranges(self):
-        # invalid values of the correct type
-        # raise ValueError (not OverflowError)
-        for t, (l, h) in zip(unsigned_types, unsigned_ranges):
-            self.assertRaises(ValueError, t, l-1)
-            self.assertRaises(ValueError, t, h+1)
-
     def test_from_param(self):
         # the from_param class method attribute always
         # returns PyCArgObject instances
@@ -106,7 +86,7 @@ def test_byref(self):
     def test_floats(self):
         # c_float and c_double can be created from
         # Python int and float
-        class FloatLike(object):
+        class FloatLike:
             def __float__(self):
                 return 2.0
         f = FloatLike()
@@ -117,15 +97,15 @@ def __float__(self):
             self.assertEqual(t(f).value, 2.0)
 
     def test_integers(self):
-        class FloatLike(object):
+        class FloatLike:
             def __float__(self):
                 return 2.0
         f = FloatLike()
-        class IntLike(object):
+        class IntLike:
             def __int__(self):
                 return 2
         d = IntLike()
-        class IndexLike(object):
+        class IndexLike:
             def __index__(self):
                 return 2
         i = IndexLike()
@@ -161,15 +141,14 @@ def test_alignments(self):
                                  (code, align))
 
     def test_int_from_address(self):
-        from array import array
         for t in signed_types + unsigned_types:
             # the array module doesn't support all format codes
             # (no 'q' or 'Q')
             try:
-                array(t._type_)
+                array.array(t._type_)
             except ValueError:
                 continue
-            a = array(t._type_, [100])
+            a = array.array(t._type_, [100])
 
             # v now is an integer at an 'external' memory location
             v = t.from_address(a.buffer_info()[0])
@@ -182,9 +161,8 @@ def test_int_from_address(self):
 
 
     def test_float_from_address(self):
-        from array import array
         for t in float_types:
-            a = array(t._type_, [3.14])
+            a = array.array(t._type_, [3.14])
             v = t.from_address(a.buffer_info()[0])
             self.assertEqual(v.value, a[0])
             self.assertIs(type(v), t)
@@ -193,10 +171,7 @@ def test_float_from_address(self):
             self.assertIs(type(v), t)
 
     def test_char_from_address(self):
-        from ctypes import c_char
-        from array import array
-
-        a = array('b', [0])
+        a = array.array('b', [0])
         a[0] = ord('x')
         v = c_char.from_address(a.buffer_info()[0])
         self.assertEqual(v.value, b'x')
@@ -205,19 +180,6 @@ def test_char_from_address(self):
         a[0] = ord('?')
         self.assertEqual(v.value, b'?')
 
-    # array does not support c_bool / 't'
-    @unittest.skip('test disabled')
-    def test_bool_from_address(self):
-        from ctypes import c_bool
-        from array import array
-        a = array(c_bool._type_, [True])
-        v = t.from_address(a.buffer_info()[0])
-        self.assertEqual(v.value, a[0])
-        self.assertEqual(type(v) is t)
-        a[0] = False
-        self.assertEqual(v.value, a[0])
-        self.assertEqual(type(v) is t)
-
     def test_init(self):
         # c_int() can be initialized from Python's int, and c_int.
         # Not from c_long or so, which seems strange, abc should
@@ -225,7 +187,6 @@ def test_init(self):
         self.assertRaises(TypeError, c_int, c_long(42))
 
     def test_float_overflow(self):
-        import sys
         big_int = int(sys.float_info.max) * 2
         for t in float_types + [c_longdouble]:
             self.assertRaises(OverflowError, t, big_int)
@@ -234,62 +195,6 @@ def test_float_overflow(self):
             if (hasattr(t, "__ctype_le__")):
                 self.assertRaises(OverflowError, t.__ctype_le__, big_int)
 
-    @unittest.skip('test disabled')
-    def test_perf(self):
-        check_perf()
-
-from ctypes import _SimpleCData
-class c_int_S(_SimpleCData):
-    _type_ = "i"
-    __slots__ = []
-
-def run_test(rep, msg, func, arg=None):
-##    items = [None] * rep
-    items = range(rep)
-    from time import perf_counter as clock
-    if arg is not None:
-        start = clock()
-        for i in items:
-            func(arg); func(arg); func(arg); func(arg); func(arg)
-        stop = clock()
-    else:
-        start = clock()
-        for i in items:
-            func(); func(); func(); func(); func()
-        stop = clock()
-    print("%15s: %.2f us" % (msg, ((stop-start)*1e6/5/rep)))
-
-def check_perf():
-    # Construct 5 objects
-    from ctypes import c_int
-
-    REP = 200000
-
-    run_test(REP, "int()", int)
-    run_test(REP, "int(999)", int)
-    run_test(REP, "c_int()", c_int)
-    run_test(REP, "c_int(999)", c_int)
-    run_test(REP, "c_int_S()", c_int_S)
-    run_test(REP, "c_int_S(999)", c_int_S)
-
-# Python 2.3 -OO, win2k, P4 700 MHz:
-#
-#          int(): 0.87 us
-#       int(999): 0.87 us
-#        c_int(): 3.35 us
-#     c_int(999): 3.34 us
-#      c_int_S(): 3.23 us
-#   c_int_S(999): 3.24 us
-
-# Python 2.2 -OO, win2k, P4 700 MHz:
-#
-#          int(): 0.89 us
-#       int(999): 0.89 us
-#        c_int(): 9.99 us
-#     c_int(999): 10.02 us
-#      c_int_S(): 9.87 us
-#   c_int_S(999): 9.85 us
 
 if __name__ == '__main__':
-##    check_perf()
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_objects.py b/Lib/test/test_ctypes/test_objects.py
index 44a3c61ad79267..fb01421b955951 100644
--- a/Lib/test/test_ctypes/test_objects.py
+++ b/Lib/test/test_ctypes/test_objects.py
@@ -11,7 +11,7 @@
 
 Here is an array of string pointers:
 
->>> from ctypes import *
+>>> from ctypes import Structure, c_int, c_char_p
 >>> array = (c_char_p * 5)()
 >>> print(array._objects)
 None
@@ -51,17 +51,16 @@
 >>> x.array._b_base_._objects
 {'0:2': b'spam spam spam'}
 >>>
-
 '''
 
-import unittest, doctest
+import doctest
+import unittest
+
 
-import test.test_ctypes.test_objects
+def load_tests(loader, tests, pattern):
+    tests.addTest(doctest.DocTestSuite())
+    return tests
 
-class TestCase(unittest.TestCase):
-    def test(self):
-        failures, tests = doctest.testmod(test.test_ctypes.test_objects)
-        self.assertFalse(failures, 'doctests failed, see output above')
 
 if __name__ == '__main__':
-    doctest.testmod(test.test_ctypes.test_objects)
+    unittest.main()
diff --git a/Lib/test/test_ctypes/test_parameters.py b/Lib/test/test_ctypes/test_parameters.py
index 06cc95107b79fa..d1eeee6b0306fe 100644
--- a/Lib/test/test_ctypes/test_parameters.py
+++ b/Lib/test/test_ctypes/test_parameters.py
@@ -1,9 +1,22 @@
+import _ctypes_test
 import unittest
-from test.test_ctypes import need_symbol
 import test.support
+from ctypes import (CDLL, PyDLL, ArgumentError,
+                    Structure, Array, Union,
+                    _Pointer, _SimpleCData, _CFuncPtr,
+                    POINTER, pointer, byref,
+                    c_void_p, c_char_p, c_wchar_p, py_object,
+                    c_bool,
+                    c_char, c_wchar,
+                    c_byte, c_ubyte,
+                    c_short, c_ushort,
+                    c_int, c_uint,
+                    c_long, c_ulong,
+                    c_longlong, c_ulonglong,
+                    c_float, c_double, c_longdouble)
 
-class SimpleTypesTestCase(unittest.TestCase):
 
+class SimpleTypesTestCase(unittest.TestCase):
     def setUp(self):
         try:
             from _ctypes import set_conversion_mode
@@ -21,7 +34,6 @@ def tearDown(self):
             set_conversion_mode(*self.prev_conv_mode)
 
     def test_subclasses(self):
-        from ctypes import c_void_p, c_char_p
         # ctypes 0.9.5 and before did overwrite from_param in SimpleType_new
         class CVOIDP(c_void_p):
             def from_param(cls, value):
@@ -36,10 +48,7 @@ def from_param(cls, value):
         self.assertEqual(CVOIDP.from_param("abc"), "abcabc")
         self.assertEqual(CCHARP.from_param("abc"), "abcabcabcabc")
 
-    @need_symbol('c_wchar_p')
     def test_subclasses_c_wchar_p(self):
-        from ctypes import c_wchar_p
-
         class CWCHARP(c_wchar_p):
             def from_param(cls, value):
                 return value * 3
@@ -49,8 +58,6 @@ def from_param(cls, value):
 
     # XXX Replace by c_char_p tests
     def test_cstrings(self):
-        from ctypes import c_char_p
-
         # c_char_p.from_param on a Python String packs the string
         # into a cparam object
         s = b"123"
@@ -66,10 +73,7 @@ def test_cstrings(self):
         a = c_char_p(b"123")
         self.assertIs(c_char_p.from_param(a), a)
 
-    @need_symbol('c_wchar_p')
     def test_cw_strings(self):
-        from ctypes import c_wchar_p
-
         c_wchar_p.from_param("123")
 
         self.assertRaises(TypeError, c_wchar_p.from_param, 42)
@@ -79,17 +83,12 @@ def test_cw_strings(self):
         self.assertEqual(type(pa), c_wchar_p)
 
     def test_c_char(self):
-        from ctypes import c_char
-
         with self.assertRaises(TypeError) as cm:
             c_char.from_param(b"abc")
         self.assertEqual(str(cm.exception),
                          "one character bytes, bytearray or integer expected")
 
-    @need_symbol('c_wchar')
     def test_c_wchar(self):
-        from ctypes import c_wchar
-
         with self.assertRaises(TypeError) as cm:
             c_wchar.from_param("abc")
         self.assertEqual(str(cm.exception),
@@ -102,11 +101,8 @@ def test_c_wchar(self):
                          "unicode string expected instead of int instance")
 
     def test_int_pointers(self):
-        from ctypes import c_short, c_uint, c_int, c_long, POINTER, pointer
         LPINT = POINTER(c_int)
 
-##        p = pointer(c_int(42))
-##        x = LPINT.from_param(p)
         x = LPINT.from_param(pointer(c_int(42)))
         self.assertEqual(x.contents.value, 42)
         self.assertEqual(LPINT(c_int(42)).contents.value, 42)
@@ -121,7 +117,6 @@ def test_int_pointers(self):
     def test_byref_pointer(self):
         # The from_param class method of POINTER(typ) classes accepts what is
         # returned by byref(obj), it type(obj) == typ
-        from ctypes import c_short, c_uint, c_int, c_long, POINTER, byref
         LPINT = POINTER(c_int)
 
         LPINT.from_param(byref(c_int(42)))
@@ -133,7 +128,6 @@ def test_byref_pointer(self):
 
     def test_byref_pointerpointer(self):
         # See above
-        from ctypes import c_short, c_uint, c_int, c_long, pointer, POINTER, byref
 
         LPLPINT = POINTER(POINTER(c_int))
         LPLPINT.from_param(byref(pointer(c_int(42))))
@@ -144,7 +138,6 @@ def test_byref_pointerpointer(self):
         self.assertRaises(TypeError, LPLPINT.from_param, byref(pointer(c_uint(22))))
 
     def test_array_pointers(self):
-        from ctypes import c_short, c_uint, c_int, c_long, POINTER
         INTARRAY = c_int * 3
         ia = INTARRAY()
         self.assertEqual(len(ia), 3)
@@ -159,15 +152,12 @@ def test_array_pointers(self):
         self.assertRaises(TypeError, LPINT.from_param, c_uint*3)
 
     def test_noctypes_argtype(self):
-        import _ctypes_test
-        from ctypes import CDLL, c_void_p, ArgumentError
-
         func = CDLL(_ctypes_test.__file__)._testfunc_p_p
         func.restype = c_void_p
         # TypeError: has no from_param method
         self.assertRaises(TypeError, setattr, func, "argtypes", (object,))
 
-        class Adapter(object):
+        class Adapter:
             def from_param(cls, obj):
                 return None
 
@@ -175,7 +165,7 @@ def from_param(cls, obj):
         self.assertEqual(func(None), None)
         self.assertEqual(func(object()), None)
 
-        class Adapter(object):
+        class Adapter:
             def from_param(cls, obj):
                 return obj
 
@@ -184,7 +174,7 @@ def from_param(cls, obj):
         self.assertRaises(ArgumentError, func, object())
         self.assertEqual(func(c_void_p(42)), 42)
 
-        class Adapter(object):
+        class Adapter:
             def from_param(cls, obj):
                 raise ValueError(obj)
 
@@ -193,9 +183,6 @@ def from_param(cls, obj):
         self.assertRaises(ArgumentError, func, 99)
 
     def test_abstract(self):
-        from ctypes import (Array, Structure, Union, _Pointer,
-                            _SimpleCData, _CFuncPtr)
-
         self.assertRaises(TypeError, Array.from_param, 42)
         self.assertRaises(TypeError, Structure.from_param, 42)
         self.assertRaises(TypeError, Union.from_param, 42)
@@ -207,7 +194,6 @@ def test_abstract(self):
     def test_issue31311(self):
         # __setstate__ should neither raise a SystemError nor crash in case
         # of a bad __dict__.
-        from ctypes import Structure
 
         class BadStruct(Structure):
             @property
@@ -224,27 +210,6 @@ def __dict__(self):
             WorseStruct().__setstate__({}, b'foo')
 
     def test_parameter_repr(self):
-        from ctypes import (
-            c_bool,
-            c_char,
-            c_wchar,
-            c_byte,
-            c_ubyte,
-            c_short,
-            c_ushort,
-            c_int,
-            c_uint,
-            c_long,
-            c_ulong,
-            c_longlong,
-            c_ulonglong,
-            c_float,
-            c_double,
-            c_longdouble,
-            c_char_p,
-            c_wchar_p,
-            c_void_p,
-        )
         self.assertRegex(repr(c_bool.from_param(True)), r"^<cparam '\?' at 0x[A-Fa-f0-9]+>$")
         self.assertEqual(repr(c_char.from_param(97)), "<cparam 'c' ('a')>")
         self.assertRegex(repr(c_wchar.from_param('a')), r"^<cparam 'u' at 0x[A-Fa-f0-9]+>$")
@@ -269,9 +234,6 @@ def test_parameter_repr(self):
     @test.support.cpython_only
     def test_from_param_result_refcount(self):
         # Issue #99952
-        import _ctypes_test
-        from ctypes import PyDLL, c_int, c_void_p, py_object, Structure
-
         class X(Structure):
             """This struct size is <= sizeof(void*)."""
             _fields_ = [("a", c_void_p)]
@@ -318,7 +280,6 @@ def from_param(cls, value):
 
         self.assertEqual(trace, [1, 2, 3, 4, 5])
 
-################################################################
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_pep3118.py b/Lib/test/test_ctypes/test_pep3118.py
index 038161745df905..06b2ccecade44e 100644
--- a/Lib/test/test_ctypes/test_pep3118.py
+++ b/Lib/test/test_ctypes/test_pep3118.py
@@ -1,6 +1,13 @@
+import re
+import sys
 import unittest
-from ctypes import *
-import re, sys
+from ctypes import (CFUNCTYPE, POINTER, sizeof, Union,
+                    Structure, LittleEndianStructure, BigEndianStructure,
+                    c_char, c_byte, c_ubyte,
+                    c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulong, c_longlong, c_ulonglong, c_uint64,
+                    c_bool, c_float, c_double, c_longdouble, py_object)
+
 
 if sys.byteorder == "little":
     THIS_ENDIAN = "<"
@@ -9,6 +16,7 @@
     THIS_ENDIAN = ">"
     OTHER_ENDIAN = "<"
 
+
 def normalize(format):
     # Remove current endian specifier and white space from a format
     # string
@@ -17,63 +25,54 @@ def normalize(format):
     format = format.replace(OTHER_ENDIAN, THIS_ENDIAN)
     return re.sub(r"\s", "", format)
 
-class Test(unittest.TestCase):
 
+class Test(unittest.TestCase):
     def test_native_types(self):
         for tp, fmt, shape, itemtp in native_types:
             ob = tp()
             v = memoryview(ob)
-            try:
-                self.assertEqual(normalize(v.format), normalize(fmt))
-                if shape:
-                    self.assertEqual(len(v), shape[0])
-                else:
-                    self.assertRaises(TypeError, len, v)
-                self.assertEqual(v.itemsize, sizeof(itemtp))
-                self.assertEqual(v.shape, shape)
-                # XXX Issue #12851: PyCData_NewGetBuffer() must provide strides
-                #     if requested. memoryview currently reconstructs missing
-                #     stride information, so this assert will fail.
-                # self.assertEqual(v.strides, ())
-
-                # they are always read/write
-                self.assertFalse(v.readonly)
-
-                n = 1
-                for dim in v.shape:
-                    n = n * dim
-                self.assertEqual(n * v.itemsize, len(v.tobytes()))
-            except:
-                # so that we can see the failing type
-                print(tp)
-                raise
+            self.assertEqual(normalize(v.format), normalize(fmt))
+            if shape:
+                self.assertEqual(len(v), shape[0])
+            else:
+                self.assertRaises(TypeError, len, v)
+            self.assertEqual(v.itemsize, sizeof(itemtp))
+            self.assertEqual(v.shape, shape)
+            # XXX Issue #12851: PyCData_NewGetBuffer() must provide strides
+            #     if requested. memoryview currently reconstructs missing
+            #     stride information, so this assert will fail.
+            # self.assertEqual(v.strides, ())
+
+            # they are always read/write
+            self.assertFalse(v.readonly)
+
+            n = 1
+            for dim in v.shape:
+                n = n * dim
+            self.assertEqual(n * v.itemsize, len(v.tobytes()))
 
     def test_endian_types(self):
         for tp, fmt, shape, itemtp in endian_types:
             ob = tp()
             v = memoryview(ob)
-            try:
-                self.assertEqual(v.format, fmt)
-                if shape:
-                    self.assertEqual(len(v), shape[0])
-                else:
-                    self.assertRaises(TypeError, len, v)
-                self.assertEqual(v.itemsize, sizeof(itemtp))
-                self.assertEqual(v.shape, shape)
-                # XXX Issue #12851
-                # self.assertEqual(v.strides, ())
-
-                # they are always read/write
-                self.assertFalse(v.readonly)
-
-                n = 1
-                for dim in v.shape:
-                    n = n * dim
-                self.assertEqual(n * v.itemsize, len(v.tobytes()))
-            except:
-                # so that we can see the failing type
-                print(tp)
-                raise
+            self.assertEqual(v.format, fmt)
+            if shape:
+                self.assertEqual(len(v), shape[0])
+            else:
+                self.assertRaises(TypeError, len, v)
+            self.assertEqual(v.itemsize, sizeof(itemtp))
+            self.assertEqual(v.shape, shape)
+            # XXX Issue #12851
+            # self.assertEqual(v.strides, ())
+
+            # they are always read/write
+            self.assertFalse(v.readonly)
+
+            n = 1
+            for dim in v.shape:
+                n = n * dim
+            self.assertEqual(n * v.itemsize, len(v.tobytes()))
+
 
 # define some structure classes
 
@@ -119,6 +118,7 @@ class Complete(Structure):
 PComplete = POINTER(Complete)
 Complete._fields_ = [("a", c_long)]
 
+
 ################################################################
 #
 # This table contains format strings as they look on little endian
@@ -228,17 +228,16 @@ class Complete(Structure):
 
     ]
 
+
 class BEPoint(BigEndianStructure):
     _fields_ = [("x", c_long), ("y", c_long)]
 
 class LEPoint(LittleEndianStructure):
     _fields_ = [("x", c_long), ("y", c_long)]
 
-################################################################
-#
+
 # This table contains format strings as they really look, on both big
 # and little endian machines.
-#
 endian_types = [
     (BEPoint, "T{>l:x:>l:y:}".replace('l', s_long), (), BEPoint),
     (LEPoint * 1, "T{<l:x:<l:y:}".replace('l', s_long), (1,), LEPoint),
@@ -246,5 +245,6 @@ class LEPoint(LittleEndianStructure):
     (POINTER(LEPoint), "&T{<l:x:<l:y:}".replace('l', s_long), (), POINTER(LEPoint)),
     ]
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_pickling.py b/Lib/test/test_ctypes/test_pickling.py
index c4a79b977931c8..0ca42a68f0675f 100644
--- a/Lib/test/test_ctypes/test_pickling.py
+++ b/Lib/test/test_ctypes/test_pickling.py
@@ -1,9 +1,14 @@
-import unittest
-import pickle
-from ctypes import *
 import _ctypes_test
+import pickle
+import unittest
+from ctypes import (CDLL, Structure, CFUNCTYPE, pointer,
+                    c_void_p, c_char_p, c_wchar_p,
+                    c_char, c_wchar, c_int, c_double)
+
+
 dll = CDLL(_ctypes_test.__file__)
 
+
 class X(Structure):
     _fields_ = [("a", c_int), ("b", c_double)]
     init_called = 0
@@ -11,9 +16,11 @@ def __init__(self, *args, **kw):
         X.init_called += 1
         self.x = 42
 
+
 class Y(X):
     _fields_ = [("str", c_char_p)]
 
+
 class PickleTest:
     def dumps(self, item):
         return pickle.dumps(item, self.proto)
@@ -71,11 +78,13 @@ def test_wchar(self):
         # Issue 5049
         self.dumps(c_wchar("x"))
 
+
 for proto in range(pickle.HIGHEST_PROTOCOL + 1):
     name = 'PickleTest_%s' % proto
     globals()[name] = type(name,
                            (PickleTest, unittest.TestCase),
                            {'proto': proto})
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_pointers.py b/Lib/test/test_ctypes/test_pointers.py
index e97515879f1f0e..8410174358c19d 100644
--- a/Lib/test/test_ctypes/test_pointers.py
+++ b/Lib/test/test_ctypes/test_pointers.py
@@ -1,15 +1,24 @@
-import unittest, sys
-
-from ctypes import *
 import _ctypes_test
+import array
+import ctypes
+import sys
+import unittest
+from ctypes import (CDLL, CFUNCTYPE, Structure,
+                    POINTER, pointer, _Pointer, _pointer_type_cache,
+                    byref, sizeof,
+                    c_void_p, c_char_p,
+                    c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulong, c_longlong, c_ulonglong,
+                    c_float, c_double)
+
 
 ctype_types = [c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint,
                  c_long, c_ulong, c_longlong, c_ulonglong, c_double, c_float]
 python_types = [int, int, int, int, int, int,
                 int, int, int, int, float, float]
 
-class PointersTestCase(unittest.TestCase):
 
+class PointersTestCase(unittest.TestCase):
     def test_pointer_crash(self):
 
         class A(POINTER(c_ulong)):
@@ -28,7 +37,6 @@ def test_pass_pointers(self):
             func.restype = c_long
 
         i = c_int(12345678)
-##        func.argtypes = (POINTER(c_int),)
         address = func(byref(i))
         self.assertEqual(c_int.from_address(address).value, 12345678)
 
@@ -71,9 +79,7 @@ def test_callbacks_with_pointers(self):
 
         def func(arg):
             for i in range(10):
-##                print arg[i],
                 self.result.append(arg[i])
-##            print
             return 0
         callback = PROTOTYPE(func)
 
@@ -83,38 +89,23 @@ def func(arg):
         # The int pointer points to a table containing the numbers 1..10
         doit = dll._testfunc_callback_with_pointer
 
-##        i = c_int(42)
-##        callback(byref(i))
-##        self.assertEqual(i.value, 84)
-
         doit(callback)
-##        print self.result
         doit(callback)
-##        print self.result
 
     def test_basics(self):
-        from operator import delitem
         for ct, pt in zip(ctype_types, python_types):
             i = ct(42)
             p = pointer(i)
-##            print type(p.contents), ct
             self.assertIs(type(p.contents), ct)
             # p.contents is the same as p[0]
-##            print p.contents
-##            self.assertEqual(p.contents, 42)
-##            self.assertEqual(p[0], 42)
 
-            self.assertRaises(TypeError, delitem, p, 0)
+            with self.assertRaises(TypeError):
+                del p[0]
 
     def test_from_address(self):
-        from array import array
-        a = array('i', [100, 200, 300, 400, 500])
+        a = array.array('i', [100, 200, 300, 400, 500])
         addr = a.buffer_info()[0]
-
         p = POINTER(POINTER(c_int))
-##        print dir(p)
-##        print p.from_address
-##        print p.from_address(addr)[0][0]
 
     def test_other(self):
         class Table(Structure):
@@ -130,7 +121,6 @@ class Table(Structure):
 
         pt.contents.c = 33
 
-        from ctypes import _pointer_type_cache
         del _pointer_type_cache[Table]
 
     def test_basic(self):
@@ -193,7 +183,7 @@ def test_pointers_bool(self):
 
         # COM methods are boolean True:
         if sys.platform == "win32":
-            mth = WINFUNCTYPE(None)(42, "name", (), None)
+            mth = ctypes.WINFUNCTYPE(None)(42, "name", (), None)
             self.assertEqual(bool(mth), True)
 
     def test_pointer_type_name(self):
@@ -201,7 +191,6 @@ def test_pointer_type_name(self):
         self.assertTrue(POINTER(LargeNamedType))
 
         # to not leak references, we must clean _pointer_type_cache
-        from ctypes import _pointer_type_cache
         del _pointer_type_cache[LargeNamedType]
 
     def test_pointer_type_str_name(self):
@@ -210,12 +199,9 @@ def test_pointer_type_str_name(self):
         self.assertTrue(P)
 
         # to not leak references, we must clean _pointer_type_cache
-        from ctypes import _pointer_type_cache
         del _pointer_type_cache[id(P)]
 
     def test_abstract(self):
-        from ctypes import _Pointer
-
         self.assertRaises(TypeError, _Pointer.set_type, 42)
 
 
diff --git a/Lib/test/test_ctypes/test_prototypes.py b/Lib/test/test_ctypes/test_prototypes.py
index bf27561487ac81..81eb4562c740fd 100644
--- a/Lib/test/test_ctypes/test_prototypes.py
+++ b/Lib/test/test_ctypes/test_prototypes.py
@@ -1,7 +1,3 @@
-from ctypes import *
-from test.test_ctypes import need_symbol
-import unittest
-
 # IMPORTANT INFO:
 #
 # Consider this call:
@@ -23,8 +19,16 @@
 # In this case, there would have to be an additional reference to the argument...
 
 import _ctypes_test
+import unittest
+from ctypes import (CDLL, CFUNCTYPE, POINTER, ArgumentError,
+                    pointer, byref, sizeof, addressof, create_string_buffer,
+                    c_void_p, c_char_p, c_wchar_p, c_char, c_wchar,
+                    c_short, c_int, c_long, c_longlong, c_double)
+
+
 testdll = CDLL(_ctypes_test.__file__)
 
+
 # Return machine address `a` as a (possibly long) non-negative integer.
 # Starting with Python 2.5, id(anything) is always non-negative, and
 # the ctypes addressof() inherits that via PyLong_FromVoidPtr().
@@ -38,12 +42,13 @@ def positive_address(a):
     assert a >= 0
     return a
 
+
 def c_wbuffer(init):
     n = len(init) + 1
     return (c_wchar * n)(*init)
 
-class CharPointersTestCase(unittest.TestCase):
 
+class CharPointersTestCase(unittest.TestCase):
     def setUp(self):
         func = testdll._testfunc_p_p
         func.restype = c_long
@@ -100,7 +105,7 @@ def test_POINTER_c_char_arg(self):
         self.assertEqual(None, func(c_char_p(None)))
         self.assertEqual(b"123", func(c_char_p(b"123")))
 
-        self.assertEqual(b"123", func(c_buffer(b"123")))
+        self.assertEqual(b"123", func(create_string_buffer(b"123")))
         ca = c_char(b"a")
         self.assertEqual(ord(b"a"), func(pointer(ca))[0])
         self.assertEqual(ord(b"a"), func(byref(ca))[0])
@@ -115,7 +120,7 @@ def test_c_char_p_arg(self):
         self.assertEqual(None, func(c_char_p(None)))
         self.assertEqual(b"123", func(c_char_p(b"123")))
 
-        self.assertEqual(b"123", func(c_buffer(b"123")))
+        self.assertEqual(b"123", func(create_string_buffer(b"123")))
         ca = c_char(b"a")
         self.assertEqual(ord(b"a"), func(pointer(ca))[0])
         self.assertEqual(ord(b"a"), func(byref(ca))[0])
@@ -130,7 +135,7 @@ def test_c_void_p_arg(self):
         self.assertEqual(b"123", func(c_char_p(b"123")))
         self.assertEqual(None, func(c_char_p(None)))
 
-        self.assertEqual(b"123", func(c_buffer(b"123")))
+        self.assertEqual(b"123", func(create_string_buffer(b"123")))
         ca = c_char(b"a")
         self.assertEqual(ord(b"a"), func(pointer(ca))[0])
         self.assertEqual(ord(b"a"), func(byref(ca))[0])
@@ -139,7 +144,6 @@ def test_c_void_p_arg(self):
         func(pointer(c_int()))
         func((c_int * 3)())
 
-    @need_symbol('c_wchar_p')
     def test_c_void_p_arg_with_c_wchar_p(self):
         func = testdll._testfunc_p_p
         func.restype = c_wchar_p
@@ -161,9 +165,8 @@ class X:
         func.argtypes = None
         self.assertEqual(None, func(X()))
 
-@need_symbol('c_wchar')
-class WCharPointersTestCase(unittest.TestCase):
 
+class WCharPointersTestCase(unittest.TestCase):
     def setUp(self):
         func = testdll._testfunc_p_p
         func.restype = c_int
@@ -203,6 +206,7 @@ def test_c_wchar_p_arg(self):
         self.assertEqual("a", func(pointer(ca))[0])
         self.assertEqual("a", func(byref(ca))[0])
 
+
 class ArrayTest(unittest.TestCase):
     def test(self):
         func = testdll._testfunc_ai8
@@ -216,7 +220,6 @@ def test(self):
         def func(): pass
         CFUNCTYPE(None, c_int * 3)(func)
 
-################################################################
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_python_api.py b/Lib/test/test_ctypes/test_python_api.py
index de8989e2c3300f..77da35855928a4 100644
--- a/Lib/test/test_ctypes/test_python_api.py
+++ b/Lib/test/test_ctypes/test_python_api.py
@@ -1,18 +1,12 @@
-from ctypes import *
+import _ctypes
+import sys
 import unittest
 from test import support
+from ctypes import (pythonapi, POINTER, create_string_buffer, sizeof,
+                    py_object, c_char_p, c_char, c_long, c_size_t)
 
-################################################################
-# This section should be moved into ctypes\__init__.py, when it's ready.
-
-from _ctypes import PyObj_FromPtr
-
-################################################################
-
-from sys import getrefcount as grc
 
 class PythonAPITestCase(unittest.TestCase):
-
     def test_PyBytes_FromStringAndSize(self):
         PyBytes_FromStringAndSize = pythonapi.PyBytes_FromStringAndSize
 
@@ -27,47 +21,47 @@ def test_PyString_FromString(self):
         pythonapi.PyBytes_FromString.argtypes = (c_char_p,)
 
         s = b"abc"
-        refcnt = grc(s)
+        refcnt = sys.getrefcount(s)
         pyob = pythonapi.PyBytes_FromString(s)
-        self.assertEqual(grc(s), refcnt)
+        self.assertEqual(sys.getrefcount(s), refcnt)
         self.assertEqual(s, pyob)
         del pyob
-        self.assertEqual(grc(s), refcnt)
+        self.assertEqual(sys.getrefcount(s), refcnt)
 
     @support.refcount_test
     def test_PyLong_Long(self):
-        ref42 = grc(42)
+        ref42 = sys.getrefcount(42)
         pythonapi.PyLong_FromLong.restype = py_object
         self.assertEqual(pythonapi.PyLong_FromLong(42), 42)
 
-        self.assertEqual(grc(42), ref42)
+        self.assertEqual(sys.getrefcount(42), ref42)
 
         pythonapi.PyLong_AsLong.argtypes = (py_object,)
         pythonapi.PyLong_AsLong.restype = c_long
 
         res = pythonapi.PyLong_AsLong(42)
         # Small int refcnts don't change
-        self.assertEqual(grc(res), ref42)
+        self.assertEqual(sys.getrefcount(res), ref42)
         del res
-        self.assertEqual(grc(42), ref42)
+        self.assertEqual(sys.getrefcount(42), ref42)
 
     @support.refcount_test
     def test_PyObj_FromPtr(self):
         s = "abc def ghi jkl"
-        ref = grc(s)
+        ref = sys.getrefcount(s)
         # id(python-object) is the address
-        pyobj = PyObj_FromPtr(id(s))
+        pyobj = _ctypes.PyObj_FromPtr(id(s))
         self.assertIs(s, pyobj)
 
-        self.assertEqual(grc(s), ref + 1)
+        self.assertEqual(sys.getrefcount(s), ref + 1)
         del pyobj
-        self.assertEqual(grc(s), ref)
+        self.assertEqual(sys.getrefcount(s), ref)
 
     def test_PyOS_snprintf(self):
         PyOS_snprintf = pythonapi.PyOS_snprintf
         PyOS_snprintf.argtypes = POINTER(c_char), c_size_t, c_char_p
 
-        buf = c_buffer(256)
+        buf = create_string_buffer(256)
         PyOS_snprintf(buf, sizeof(buf), b"Hello from %s", b"ctypes")
         self.assertEqual(buf.value, b"Hello from ctypes")
 
@@ -82,5 +76,6 @@ def test_pyobject_repr(self):
         self.assertEqual(repr(py_object(42)), "py_object(42)")
         self.assertEqual(repr(py_object(object)), "py_object(%r)" % object)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_random_things.py b/Lib/test/test_ctypes/test_random_things.py
index 2988e275cf4bbf..630f6ed9489eba 100644
--- a/Lib/test/test_ctypes/test_random_things.py
+++ b/Lib/test/test_ctypes/test_random_things.py
@@ -1,30 +1,34 @@
-from ctypes import *
+import _ctypes
 import contextlib
-from test import support
-import unittest
+import ctypes
 import sys
+import unittest
+from test import support
+from ctypes import CFUNCTYPE, c_void_p, c_char_p, c_int, c_double
 
 
 def callback_func(arg):
     42 / arg
     raise ValueError(arg)
 
+
 @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
 class call_function_TestCase(unittest.TestCase):
     # _ctypes.call_function is deprecated and private, but used by
     # Gary Bishp's readline module.  If we have it, we must test it as well.
 
     def test(self):
-        from _ctypes import call_function
-        windll.kernel32.LoadLibraryA.restype = c_void_p
-        windll.kernel32.GetProcAddress.argtypes = c_void_p, c_char_p
-        windll.kernel32.GetProcAddress.restype = c_void_p
+        kernel32 = ctypes.windll.kernel32
+        kernel32.LoadLibraryA.restype = c_void_p
+        kernel32.GetProcAddress.argtypes = c_void_p, c_char_p
+        kernel32.GetProcAddress.restype = c_void_p
+
+        hdll = kernel32.LoadLibraryA(b"kernel32")
+        funcaddr = kernel32.GetProcAddress(hdll, b"GetModuleHandleA")
 
-        hdll = windll.kernel32.LoadLibraryA(b"kernel32")
-        funcaddr = windll.kernel32.GetProcAddress(hdll, b"GetModuleHandleA")
+        self.assertEqual(_ctypes.call_function(funcaddr, (None,)),
+                         kernel32.GetModuleHandleA(None))
 
-        self.assertEqual(call_function(funcaddr, (None,)),
-                             windll.kernel32.GetModuleHandleA(None))
 
 class CallbackTracbackTestCase(unittest.TestCase):
     # When an exception is raised in a ctypes callback function, the C
@@ -47,9 +51,9 @@ def expect_unraisable(self, exc_type, exc_msg=None):
             if exc_msg is not None:
                 self.assertEqual(str(cm.unraisable.exc_value), exc_msg)
             self.assertEqual(cm.unraisable.err_msg,
-                             "Exception ignored on calling ctypes "
-                             "callback function")
-            self.assertIs(cm.unraisable.object, callback_func)
+                             f"Exception ignored on calling ctypes "
+                             f"callback function {callback_func!r}")
+            self.assertIsNone(cm.unraisable.object)
 
     def test_ValueError(self):
         cb = CFUNCTYPE(c_int, c_int)(callback_func)
diff --git a/Lib/test/test_ctypes/test_refcounts.py b/Lib/test/test_ctypes/test_refcounts.py
index 48958cd2a60196..a90588ca9bb1b6 100644
--- a/Lib/test/test_ctypes/test_refcounts.py
+++ b/Lib/test/test_ctypes/test_refcounts.py
@@ -1,60 +1,57 @@
-import unittest
-from test import support
+import _ctypes_test
 import ctypes
 import gc
+import sys
+import unittest
+from test import support
+
 
 MyCallback = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_int)
 OtherCallback = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_int, ctypes.c_ulonglong)
 
-import _ctypes_test
 dll = ctypes.CDLL(_ctypes_test.__file__)
 
-class RefcountTestCase(unittest.TestCase):
 
+class RefcountTestCase(unittest.TestCase):
     @support.refcount_test
     def test_1(self):
-        from sys import getrefcount as grc
-
         f = dll._testfunc_callback_i_if
         f.restype = ctypes.c_int
         f.argtypes = [ctypes.c_int, MyCallback]
 
         def callback(value):
-            #print "called back with", value
             return value
 
-        self.assertEqual(grc(callback), 2)
+        self.assertEqual(sys.getrefcount(callback), 2)
         cb = MyCallback(callback)
 
-        self.assertGreater(grc(callback), 2)
+        self.assertGreater(sys.getrefcount(callback), 2)
         result = f(-10, cb)
         self.assertEqual(result, -18)
         cb = None
 
         gc.collect()
 
-        self.assertEqual(grc(callback), 2)
-
+        self.assertEqual(sys.getrefcount(callback), 2)
 
     @support.refcount_test
     def test_refcount(self):
-        from sys import getrefcount as grc
         def func(*args):
             pass
         # this is the standard refcount for func
-        self.assertEqual(grc(func), 2)
+        self.assertEqual(sys.getrefcount(func), 2)
 
         # the CFuncPtr instance holds at least one refcount on func:
         f = OtherCallback(func)
-        self.assertGreater(grc(func), 2)
+        self.assertGreater(sys.getrefcount(func), 2)
 
         # and may release it again
         del f
-        self.assertGreaterEqual(grc(func), 2)
+        self.assertGreaterEqual(sys.getrefcount(func), 2)
 
         # but now it must be gone
         gc.collect()
-        self.assertEqual(grc(func), 2)
+        self.assertEqual(sys.getrefcount(func), 2)
 
         class X(ctypes.Structure):
             _fields_ = [("a", OtherCallback)]
@@ -62,32 +59,31 @@ class X(ctypes.Structure):
         x.a = OtherCallback(func)
 
         # the CFuncPtr instance holds at least one refcount on func:
-        self.assertGreater(grc(func), 2)
+        self.assertGreater(sys.getrefcount(func), 2)
 
         # and may release it again
         del x
-        self.assertGreaterEqual(grc(func), 2)
+        self.assertGreaterEqual(sys.getrefcount(func), 2)
 
         # and now it must be gone again
         gc.collect()
-        self.assertEqual(grc(func), 2)
+        self.assertEqual(sys.getrefcount(func), 2)
 
         f = OtherCallback(func)
 
         # the CFuncPtr instance holds at least one refcount on func:
-        self.assertGreater(grc(func), 2)
+        self.assertGreater(sys.getrefcount(func), 2)
 
         # create a cycle
         f.cycle = f
 
         del f
         gc.collect()
-        self.assertEqual(grc(func), 2)
+        self.assertEqual(sys.getrefcount(func), 2)
+
 
 class AnotherLeak(unittest.TestCase):
     def test_callback(self):
-        import sys
-
         proto = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_int, ctypes.c_int)
         def func(a, b):
             return a * b * 2
@@ -112,5 +108,6 @@ def func():
                 for _ in range(10000):
                     func()
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_repr.py b/Lib/test/test_ctypes/test_repr.py
index 60a2c803453d53..e7587984a92c45 100644
--- a/Lib/test/test_ctypes/test_repr.py
+++ b/Lib/test/test_ctypes/test_repr.py
@@ -1,5 +1,8 @@
-from ctypes import *
 import unittest
+from ctypes import (c_byte, c_short, c_int, c_long, c_longlong,
+                    c_ubyte, c_ushort, c_uint, c_ulong, c_ulonglong,
+                    c_float, c_double, c_longdouble, c_bool, c_char)
+
 
 subclasses = []
 for base in [c_byte, c_short, c_int, c_long, c_longlong,
@@ -9,11 +12,12 @@ class X(base):
         pass
     subclasses.append(X)
 
+
 class X(c_char):
     pass
 
-# This test checks if the __repr__ is correct for subclasses of simple types
 
+# This test checks if the __repr__ is correct for subclasses of simple types
 class ReprTest(unittest.TestCase):
     def test_numbers(self):
         for typ in subclasses:
@@ -25,5 +29,6 @@ def test_char(self):
         self.assertEqual("c_char(b'x')", repr(c_char(b'x')))
         self.assertEqual("<X object at", repr(X(b'x'))[:12])
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_returnfuncptrs.py b/Lib/test/test_ctypes/test_returnfuncptrs.py
index 1974f40df643b2..4010e511e75ade 100644
--- a/Lib/test/test_ctypes/test_returnfuncptrs.py
+++ b/Lib/test/test_ctypes/test_returnfuncptrs.py
@@ -1,10 +1,9 @@
+import _ctypes_test
 import unittest
-from ctypes import *
+from ctypes import CDLL, CFUNCTYPE, ArgumentError, c_char_p, c_void_p, c_char
 
-import _ctypes_test
 
 class ReturnFuncPtrTestCase(unittest.TestCase):
-
     def test_with_prototype(self):
         # The _ctypes_test shared lib/dll exports quite some functions for testing.
         # The get_strchr function returns a *pointer* to the C strchr function.
@@ -62,5 +61,6 @@ def __getitem__(self, key):
         self.assertRaises(ArgumentError, strchr, b"abcdef", 3.0)
         self.assertRaises(TypeError, strchr, b"abcdef")
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_simplesubclasses.py b/Lib/test/test_ctypes/test_simplesubclasses.py
index 3da2794a7942ed..6072b62de5d53a 100644
--- a/Lib/test/test_ctypes/test_simplesubclasses.py
+++ b/Lib/test/test_ctypes/test_simplesubclasses.py
@@ -1,5 +1,6 @@
 import unittest
-from ctypes import *
+from ctypes import Structure, CFUNCTYPE, c_int
+
 
 class MyInt(c_int):
     def __eq__(self, other):
@@ -7,6 +8,7 @@ def __eq__(self, other):
             return NotImplementedError
         return self.value == other.value
 
+
 class Test(unittest.TestCase):
 
     def test_compare(self):
@@ -51,5 +53,6 @@ class X(Structure):
 
         self.assertEqual(s.x, MyInt(42))
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_sizes.py b/Lib/test/test_ctypes/test_sizes.py
index bf8d6ea35aa399..e981ccfad5ec95 100644
--- a/Lib/test/test_ctypes/test_sizes.py
+++ b/Lib/test/test_ctypes/test_sizes.py
@@ -1,7 +1,9 @@
 # Test specifically-sized containers.
 
-from ctypes import *
-
+from ctypes import (sizeof,
+                    c_int8, c_uint8, c_int16, c_uint16,
+                    c_int32, c_uint32, c_int64, c_uint64,
+                    c_void_p, c_size_t, c_ssize_t, c_time_t, SIZEOF_TIME_T)
 import unittest
 
 
diff --git a/Lib/test/test_ctypes/test_slicing.py b/Lib/test/test_ctypes/test_slicing.py
index b3e68f9a822d94..a592d911cbe6ca 100644
--- a/Lib/test/test_ctypes/test_slicing.py
+++ b/Lib/test/test_ctypes/test_slicing.py
@@ -1,8 +1,8 @@
+import _ctypes_test
 import unittest
-from ctypes import *
-from test.test_ctypes import need_symbol
+from ctypes import (CDLL, POINTER, sizeof,
+                    c_byte, c_short, c_int, c_long, c_char, c_wchar, c_char_p)
 
-import _ctypes_test
 
 class SlicesTestCase(unittest.TestCase):
     def test_getslice_cint(self):
@@ -46,18 +46,21 @@ def test_setslice_cint(self):
         b[33::-3] = range(12)
         self.assertEqual(a[:], b)
 
-        from operator import setitem
-
         # TypeError: int expected instead of str instance
-        self.assertRaises(TypeError, setitem, a, slice(0, 5), "abcde")
+        with self.assertRaises(TypeError):
+            a[:5] = "abcde"
+
         # TypeError: int expected instead of str instance
-        self.assertRaises(TypeError, setitem, a, slice(0, 5),
-                          ["a", "b", "c", "d", "e"])
+        with self.assertRaises(TypeError):
+            a[:5] =  ["a", "b", "c", "d", "e"]
+
         # TypeError: int expected instead of float instance
-        self.assertRaises(TypeError, setitem, a, slice(0, 5),
-                          [1, 2, 3, 4, 3.14])
+        with self.assertRaises(TypeError):
+            a[:5] = [1, 2, 3, 4, 3.14]
+
         # ValueError: Can only assign sequence of same size
-        self.assertRaises(ValueError, setitem, a, slice(0, 5), range(32))
+        with self.assertRaises(ValueError):
+            a[:5] = range(32)
 
     def test_char_ptr(self):
         s = b"abcdefghijklmnopqrstuvwxyz"
@@ -73,18 +76,20 @@ def test_char_ptr(self):
         self.assertEqual(res[len(s)-1:5:-7], s[:5:-7])
         self.assertEqual(res[0:-1:-1], s[0::-1])
 
-        import operator
-        self.assertRaises(ValueError, operator.getitem,
-                          res, slice(None, None, None))
-        self.assertRaises(ValueError, operator.getitem,
-                          res, slice(0, None, None))
-        self.assertRaises(ValueError, operator.getitem,
-                          res, slice(None, 5, -1))
-        self.assertRaises(ValueError, operator.getitem,
-                          res, slice(-5, None, None))
-
-        self.assertRaises(TypeError, operator.setitem,
-                          res, slice(0, 5), "abcde")
+        # get items
+        with self.assertRaises(ValueError):
+            res[:]
+        with self.assertRaises(ValueError):
+            res[0:]
+        with self.assertRaises(ValueError):
+            res[:5:-1]
+        with self.assertRaises(ValueError):
+            res[-5:]
+
+        # set items
+        with self.assertRaises(TypeError):
+            res[:5] = "abcde"
+
         dll.my_free(res)
 
         dll.my_strdup.restype = POINTER(c_byte)
@@ -126,7 +131,6 @@ def test_char_array(self):
         self.assertEqual(p[2:5:-3], s[2:5:-3])
 
 
-    @need_symbol('c_wchar')
     def test_wchar_ptr(self):
         s = "abcdefghijklmnopqrstuvwxyz\0"
 
@@ -140,9 +144,8 @@ def test_wchar_ptr(self):
         self.assertEqual(res[len(s)-1:-1:-1], s[::-1])
         self.assertEqual(res[len(s)-1:5:-7], s[:5:-7])
 
-        import operator
-        self.assertRaises(TypeError, operator.setitem,
-                          res, slice(0, 5), "abcde")
+        with self.assertRaises(TypeError):
+            res[:5] = "abcde"
         dll.my_free(res)
 
         if sizeof(c_wchar) == sizeof(c_short):
@@ -161,7 +164,6 @@ def test_wchar_ptr(self):
         self.assertEqual(res[len(s)-2:5:-7], tmpl[:5:-7])
         dll.my_free(res)
 
-################################################################
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_stringptr.py b/Lib/test/test_ctypes/test_stringptr.py
index c20951f4ce0016..67c61c6c3e17e6 100644
--- a/Lib/test/test_ctypes/test_stringptr.py
+++ b/Lib/test/test_ctypes/test_stringptr.py
@@ -1,13 +1,15 @@
+import _ctypes_test
+import sys
 import unittest
 from test import support
-from ctypes import *
+from ctypes import (CDLL, Structure, POINTER, create_string_buffer,
+                    c_char, c_char_p)
 
-import _ctypes_test
 
 lib = CDLL(_ctypes_test.__file__)
 
-class StringPtrTestCase(unittest.TestCase):
 
+class StringPtrTestCase(unittest.TestCase):
     @support.refcount_test
     def test__POINTER_c_char(self):
         class X(Structure):
@@ -16,14 +18,13 @@ class X(Structure):
 
         # NULL pointer access
         self.assertRaises(ValueError, getattr, x.str, "contents")
-        b = c_buffer(b"Hello, World")
-        from sys import getrefcount as grc
-        self.assertEqual(grc(b), 2)
+        b = create_string_buffer(b"Hello, World")
+        self.assertEqual(sys.getrefcount(b), 2)
         x.str = b
-        self.assertEqual(grc(b), 3)
+        self.assertEqual(sys.getrefcount(b), 3)
 
         # POINTER(c_char) and Python string is NOT compatible
-        # POINTER(c_char) and c_buffer() is compatible
+        # POINTER(c_char) and create_string_buffer() is compatible
         for i in range(len(b)):
             self.assertEqual(b[i], x.str[i])
 
@@ -35,11 +36,11 @@ class X(Structure):
         x = X()
 
         # c_char_p and Python string is compatible
-        # c_char_p and c_buffer is NOT compatible
+        # c_char_p and create_string_buffer is NOT compatible
         self.assertEqual(x.str, None)
         x.str = b"Hello, World"
         self.assertEqual(x.str, b"Hello, World")
-        b = c_buffer(b"Hello, World")
+        b = create_string_buffer(b"Hello, World")
         self.assertRaises(TypeError, setattr, x, b"str", b)
 
 
@@ -48,15 +49,16 @@ def test_functions(self):
         strchr.restype = c_char_p
 
         # c_char_p and Python string is compatible
-        # c_char_p and c_buffer are now compatible
+        # c_char_p and create_string_buffer are now compatible
         strchr.argtypes = c_char_p, c_char
         self.assertEqual(strchr(b"abcdef", b"c"), b"cdef")
-        self.assertEqual(strchr(c_buffer(b"abcdef"), b"c"), b"cdef")
+        self.assertEqual(strchr(create_string_buffer(b"abcdef"), b"c"),
+                         b"cdef")
 
         # POINTER(c_char) and Python string is NOT compatible
-        # POINTER(c_char) and c_buffer() is compatible
+        # POINTER(c_char) and create_string_buffer() is compatible
         strchr.argtypes = POINTER(c_char), c_char
-        buf = c_buffer(b"abcdef")
+        buf = create_string_buffer(b"abcdef")
         self.assertEqual(strchr(buf, b"c"), b"cdef")
         self.assertEqual(strchr(b"abcdef", b"c"), b"cdef")
 
@@ -65,7 +67,7 @@ def test_functions(self):
         # So we must keep a reference to buf separately
 
         strchr.restype = POINTER(c_char)
-        buf = c_buffer(b"abcdef")
+        buf = create_string_buffer(b"abcdef")
         r = strchr(buf, b"c")
         x = r[0], r[1], r[2], r[3], r[4]
         self.assertEqual(x, (b"c", b"d", b"e", b"f", b"\000"))
@@ -73,5 +75,6 @@ def test_functions(self):
         # Because r is a pointer to memory that is freed after deleting buf,
         # the pointer is hanging and using it would reference freed memory.
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_strings.py b/Lib/test/test_ctypes/test_strings.py
index a9003be3f506e2..3ecc6fe180adf7 100644
--- a/Lib/test/test_ctypes/test_strings.py
+++ b/Lib/test/test_ctypes/test_strings.py
@@ -1,6 +1,7 @@
 import unittest
-from ctypes import *
-from test.test_ctypes import need_symbol
+from ctypes import (create_string_buffer, create_unicode_buffer,
+                    sizeof, byref, c_char, c_wchar)
+
 
 class StringArrayTestCase(unittest.TestCase):
     def test(self):
@@ -25,8 +26,8 @@ def test(self):
         self.assertRaises(ValueError, setattr, buf, "value", b"aaaaaaaa")
         self.assertRaises(TypeError, setattr, buf, "value", 42)
 
-    def test_c_buffer_value(self):
-        buf = c_buffer(32)
+    def test_create_string_buffer_value(self):
+        buf = create_string_buffer(32)
 
         buf.value = b"Hello, World"
         self.assertEqual(buf.value, b"Hello, World")
@@ -35,8 +36,8 @@ def test_c_buffer_value(self):
         self.assertRaises(TypeError, setattr, buf, "value", memoryview(b"abc"))
         self.assertRaises(ValueError, setattr, buf, "raw", memoryview(b"x" * 100))
 
-    def test_c_buffer_raw(self):
-        buf = c_buffer(32)
+    def test_create_string_buffer_raw(self):
+        buf = create_string_buffer(32)
 
         buf.raw = memoryview(b"Hello, World")
         self.assertEqual(buf.value, b"Hello, World")
@@ -46,13 +47,10 @@ def test_c_buffer_raw(self):
     def test_param_1(self):
         BUF = c_char * 4
         buf = BUF()
-##        print c_char_p.from_param(buf)
 
     def test_param_2(self):
         BUF = c_char * 4
         buf = BUF()
-##        print BUF.from_param(c_char_p("python"))
-##        print BUF.from_param(BUF(*"pyth"))
 
     def test_del_segfault(self):
         BUF = c_char * 4
@@ -61,7 +59,6 @@ def test_del_segfault(self):
             del buf.raw
 
 
-@need_symbol('c_wchar')
 class WStringArrayTestCase(unittest.TestCase):
     def test(self):
         BUF = c_wchar * 4
@@ -86,49 +83,41 @@ def test_nonbmp(self):
         self.assertEqual(w.value, u)
 
 
-@need_symbol('c_wchar')
 class WStringTestCase(unittest.TestCase):
     def test_wchar(self):
         c_wchar("x")
         repr(byref(c_wchar("x")))
         c_wchar("x")
 
-
-    @unittest.skip('test disabled')
     def test_basic_wstrings(self):
-        cs = c_wstring("abcdef")
-
-        # XXX This behaviour is about to change:
-        # len returns the size of the internal buffer in bytes.
-        # This includes the terminating NUL character.
-        self.assertEqual(sizeof(cs), 14)
-
-        # The value property is the string up to the first terminating NUL.
+        cs = create_unicode_buffer("abcdef")
         self.assertEqual(cs.value, "abcdef")
-        self.assertEqual(c_wstring("abc\000def").value, "abc")
 
-        self.assertEqual(c_wstring("abc\000def").value, "abc")
+        # value can be changed
+        cs.value = "abc"
+        self.assertEqual(cs.value, "abc")
+
+        # string is truncated at NUL character
+        cs.value = "def\0z"
+        self.assertEqual(cs.value, "def")
 
-        # The raw property is the total buffer contents:
-        self.assertEqual(cs.raw, "abcdef\000")
-        self.assertEqual(c_wstring("abc\000def").raw, "abc\000def\000")
+        self.assertEqual(create_unicode_buffer("abc\0def").value, "abc")
 
-        # We can change the value:
-        cs.value = "ab"
-        self.assertEqual(cs.value, "ab")
-        self.assertEqual(cs.raw, "ab\000\000\000\000\000")
+        # created with an empty string
+        cs = create_unicode_buffer(3)
+        self.assertEqual(cs.value, "")
 
-        self.assertRaises(TypeError, c_wstring, "123")
-        self.assertRaises(ValueError, c_wstring, 0)
+        cs.value = "abc"
+        self.assertEqual(cs.value, "abc")
 
-    @unittest.skip('test disabled')
     def test_toolong(self):
-        cs = c_wstring("abcdef")
-        # Much too long string:
-        self.assertRaises(ValueError, setattr, cs, "value", "123456789012345")
+        cs = create_unicode_buffer("abc")
+        with self.assertRaises(ValueError):
+            cs.value = "abcdef"
 
-        # One char too long values:
-        self.assertRaises(ValueError, setattr, cs, "value", "1234567")
+        cs = create_unicode_buffer(4)
+        with self.assertRaises(ValueError):
+            cs.value = "abcdef"
 
 
 def run_test(rep, msg, func, arg):
diff --git a/Lib/test/test_ctypes/test_struct_fields.py b/Lib/test/test_ctypes/test_struct_fields.py
index e444f5e1f77919..f60dfe5b42ef65 100644
--- a/Lib/test/test_ctypes/test_struct_fields.py
+++ b/Lib/test/test_ctypes/test_struct_fields.py
@@ -1,5 +1,6 @@
 import unittest
-from ctypes import *
+from ctypes import Structure, Union, sizeof, c_char, c_int
+
 
 class StructFieldsTestCase(unittest.TestCase):
     # Structure/Union classes must get 'finalized' sooner or
@@ -93,5 +94,6 @@ class MyCUnion(Union):
         self.assertRaises(TypeError,
                           MyCUnion.field.__get__, 'wrong type self', 42)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_structures.py b/Lib/test/test_ctypes/test_structures.py
index df39dc7f50d3f7..57ae9240b3c165 100644
--- a/Lib/test/test_ctypes/test_structures.py
+++ b/Lib/test/test_ctypes/test_structures.py
@@ -1,16 +1,16 @@
+import _ctypes_test
 import platform
+import struct
 import sys
 import unittest
-from ctypes import *
-from test.test_ctypes import need_symbol
+from ctypes import (CDLL, Array, Structure, Union, POINTER, sizeof, byref, alignment,
+                    c_void_p, c_char, c_wchar, c_byte, c_ubyte,
+                    c_uint8, c_uint16, c_uint32,
+                    c_short, c_ushort, c_int, c_uint,
+                    c_long, c_ulong, c_longlong, c_ulonglong, c_float, c_double)
 from struct import calcsize
-import _ctypes_test
 from test import support
 
-# The following definition is meant to be used from time to time to assist
-# temporarily disabling tests on specific architectures while investigations
-# are in progress, to keep buildbots happy.
-MACHINE = platform.machine()
 
 class SubclassesTest(unittest.TestCase):
     def test_subclass(self):
@@ -51,6 +51,7 @@ class Z(X):
         self.assertEqual(Y._fields_, [("b", c_int)])
         self.assertEqual(Z._fields_, [("a", c_int)])
 
+
 class StructureTestCase(unittest.TestCase):
     formats = {"c": c_char,
                "b": c_byte,
@@ -184,7 +185,6 @@ class X(Structure):
         self.assertEqual(sizeof(X), 10)
         self.assertEqual(X.b.offset, 2)
 
-        import struct
         longlong_size = struct.calcsize("q")
         longlong_align = struct.calcsize("bq") - longlong_size
 
@@ -303,7 +303,6 @@ class Person(Structure):
         self.assertEqual(p.phone.number, b"5678")
         self.assertEqual(p.age, 5)
 
-    @need_symbol('c_wchar')
     def test_structures_with_wchar(self):
         class PersonW(Structure):
             _fields_ = [("name", c_wchar * 12),
@@ -359,15 +358,6 @@ def get_except(self, func, *args):
         except Exception as detail:
             return detail.__class__, str(detail)
 
-    @unittest.skip('test disabled')
-    def test_subclass_creation(self):
-        meta = type(Structure)
-        # same as 'class X(Structure): pass'
-        # fails, since we need either a _fields_ or a _abstract_ attribute
-        cls, msg = self.get_except(meta, "X", (Structure,), {})
-        self.assertEqual((cls, msg),
-                (AttributeError, "class must define a '_fields_' attribute"))
-
     def test_abstract_class(self):
         class X(Structure):
             _abstract_ = "something"
@@ -376,9 +366,6 @@ class X(Structure):
         self.assertEqual((cls, msg), (TypeError, "abstract class"))
 
     def test_methods(self):
-##        class X(Structure):
-##            _fields_ = []
-
         self.assertIn("in_dll", dir(type(Structure)))
         self.assertIn("from_address", dir(type(Structure)))
         self.assertIn("in_dll", dir(type(Structure)))
@@ -508,12 +495,14 @@ class Test3B(Test3A):
                 ('more_data', c_float * 2),
             ]
 
+        # Load the shared library
+        dll = CDLL(_ctypes_test.__file__)
+
         s = Test2()
         expected = 0
         for i in range(16):
             s.data[i] = i
             expected += i
-        dll = CDLL(_ctypes_test.__file__)
         func = dll._testfunc_array_in_struct1
         func.restype = c_int
         func.argtypes = (Test2,)
@@ -554,6 +543,130 @@ class Test3B(Test3A):
         self.assertAlmostEqual(s.more_data[0], -3.0, places=6)
         self.assertAlmostEqual(s.more_data[1], -2.0, places=6)
 
+    @unittest.skipIf(
+        'ppc64le' in platform.uname().machine,
+        "gh-110190: currently fails on ppc64le",
+    )
+    def test_array_in_struct_registers(self):
+        dll = CDLL(_ctypes_test.__file__)
+
+        class Test3C1(Structure):
+            _fields_ = [
+                ("data", c_double * 4)
+            ]
+
+        class DataType4(Array):
+            _type_ = c_double
+            _length_ = 4
+
+        class Test3C2(Structure):
+            _fields_ = [
+                ("data", DataType4)
+            ]
+
+        class Test3C3(Structure):
+            _fields_ = [
+                ("x", c_double),
+                ("y", c_double),
+                ("z", c_double),
+                ("t", c_double)
+            ]
+
+        class Test3D1(Structure):
+            _fields_ = [
+                ("data", c_double * 5)
+            ]
+
+        class DataType5(Array):
+            _type_ = c_double
+            _length_ = 5
+
+        class Test3D2(Structure):
+            _fields_ = [
+                ("data", DataType5)
+            ]
+
+        class Test3D3(Structure):
+            _fields_ = [
+                ("x", c_double),
+                ("y", c_double),
+                ("z", c_double),
+                ("t", c_double),
+                ("u", c_double)
+            ]
+
+        # Tests for struct Test3C
+        expected = (1.0, 2.0, 3.0, 4.0)
+        func = dll._testfunc_array_in_struct_set_defaults_3C
+        func.restype = Test3C1
+        result = func()
+        # check the default values have been set properly
+        self.assertEqual(
+            (result.data[0],
+             result.data[1],
+             result.data[2],
+             result.data[3]),
+            expected
+        )
+
+        func = dll._testfunc_array_in_struct_set_defaults_3C
+        func.restype = Test3C2
+        result = func()
+        # check the default values have been set properly
+        self.assertEqual(
+            (result.data[0],
+             result.data[1],
+             result.data[2],
+             result.data[3]),
+            expected
+        )
+
+        func = dll._testfunc_array_in_struct_set_defaults_3C
+        func.restype = Test3C3
+        result = func()
+        # check the default values have been set properly
+        self.assertEqual((result.x, result.y, result.z, result.t), expected)
+
+        # Tests for struct Test3D
+        expected = (1.0, 2.0, 3.0, 4.0, 5.0)
+        func = dll._testfunc_array_in_struct_set_defaults_3D
+        func.restype = Test3D1
+        result = func()
+        # check the default values have been set properly
+        self.assertEqual(
+            (result.data[0],
+             result.data[1],
+             result.data[2],
+             result.data[3],
+             result.data[4]),
+            expected
+        )
+
+        func = dll._testfunc_array_in_struct_set_defaults_3D
+        func.restype = Test3D2
+        result = func()
+        # check the default values have been set properly
+        self.assertEqual(
+            (result.data[0],
+             result.data[1],
+             result.data[2],
+             result.data[3],
+             result.data[4]),
+            expected
+        )
+
+        func = dll._testfunc_array_in_struct_set_defaults_3D
+        func.restype = Test3D3
+        result = func()
+        # check the default values have been set properly
+        self.assertEqual(
+            (result.x,
+             result.y,
+             result.z,
+             result.t,
+             result.u),
+            expected)
+
     def test_38368(self):
         class U(Union):
             _fields_ = [
@@ -738,6 +851,7 @@ class Test8(Union):
         self.assertEqual(ctx.exception.args[0], 'item 1 in _argtypes_ passes '
                          'a union by value, which is unsupported.')
 
+
 class PointerMemberTestCase(unittest.TestCase):
 
     def test(self):
@@ -764,8 +878,6 @@ class S(Structure):
 
         s.array[0] = 1
 
-##        s.array[1] = 42
-
         items = [s.array[i] for i in range(3)]
         self.assertEqual(items, [1, 2, 3])
 
@@ -779,6 +891,7 @@ class S(Structure):
         s.p = None
         self.assertEqual(s.x, 12345678)
 
+
 class TestRecursiveStructure(unittest.TestCase):
     def test_contains_itself(self):
         class Recursive(Structure):
@@ -808,5 +921,6 @@ class Second(Structure):
         else:
             self.fail("AttributeError not raised")
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_unaligned_structures.py b/Lib/test/test_ctypes/test_unaligned_structures.py
index ee7fb45809bf7b..58a00597ef5cc4 100644
--- a/Lib/test/test_ctypes/test_unaligned_structures.py
+++ b/Lib/test/test_ctypes/test_unaligned_structures.py
@@ -1,5 +1,9 @@
 import sys, unittest
-from ctypes import *
+from ctypes import (Structure, BigEndianStructure, LittleEndianStructure,
+                    c_byte, c_short, c_int, c_long, c_longlong,
+                    c_float, c_double,
+                    c_ushort, c_uint, c_ulong, c_ulonglong)
+
 
 structures = []
 byteswapped_structures = []
@@ -24,6 +28,7 @@ class Y(SwappedStructure):
     structures.append(X)
     byteswapped_structures.append(Y)
 
+
 class TestStructures(unittest.TestCase):
     def test_native(self):
         for typ in structures:
@@ -39,5 +44,6 @@ def test_swapped(self):
             o.value = 4
             self.assertEqual(o.value, 4)
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_unicode.py b/Lib/test/test_ctypes/test_unicode.py
index 319cb3b1dcac21..2ddc7c56544e35 100644
--- a/Lib/test/test_ctypes/test_unicode.py
+++ b/Lib/test/test_ctypes/test_unicode.py
@@ -1,10 +1,8 @@
-import unittest
+import _ctypes_test
 import ctypes
-from test.test_ctypes import need_symbol
+import unittest
 
-import _ctypes_test
 
-@need_symbol('c_wchar')
 class UnicodeTestCase(unittest.TestCase):
     def test_wcslen(self):
         dll = ctypes.CDLL(_ctypes_test.__file__)
diff --git a/Lib/test/test_ctypes/test_values.py b/Lib/test/test_ctypes/test_values.py
index 435fdd22ea2be1..d0b4803dff8529 100644
--- a/Lib/test/test_ctypes/test_values.py
+++ b/Lib/test/test_ctypes/test_values.py
@@ -2,14 +2,16 @@
 A testcase which accesses *values* in a dll.
 """
 
+import _ctypes_test
 import _imp
 import importlib.util
-import unittest
 import sys
-from ctypes import *
+import unittest
+from ctypes import (Structure, CDLL, POINTER, pythonapi,
+                    _pointer_type_cache,
+                    c_ubyte, c_char_p, c_int)
 from test.support import import_helper
 
-import _ctypes_test
 
 class ValuesTestCase(unittest.TestCase):
 
@@ -31,6 +33,7 @@ def test_undefined(self):
         ctdll = CDLL(_ctypes_test.__file__)
         self.assertRaises(ValueError, c_int.in_dll, ctdll, "Undefined_Symbol")
 
+
 class PythonValuesTestCase(unittest.TestCase):
     """This test only works when python itself is a dll/shared library"""
 
@@ -55,7 +58,6 @@ class struct_frozen(Structure):
                         ("code", POINTER(c_ubyte)),
                         ("size", c_int),
                         ("is_package", c_int),
-                        ("get_code", POINTER(c_ubyte)),  # Function ptr
                         ]
         FrozenTable = POINTER(struct_frozen)
 
@@ -92,12 +94,12 @@ class struct_frozen(Structure):
                          "_PyImport_FrozenBootstrap example "
                          "in Doc/library/ctypes.rst may be out of date")
 
-        from ctypes import _pointer_type_cache
         del _pointer_type_cache[struct_frozen]
 
     def test_undefined(self):
         self.assertRaises(ValueError, c_int.in_dll, pythonapi,
                           "Undefined_Symbol")
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_varsize_struct.py b/Lib/test/test_ctypes/test_varsize_struct.py
index f409500f013c42..3e6ba6fed07e74 100644
--- a/Lib/test/test_ctypes/test_varsize_struct.py
+++ b/Lib/test/test_ctypes/test_varsize_struct.py
@@ -1,5 +1,6 @@
-from ctypes import *
 import unittest
+from ctypes import Structure, sizeof, resize, c_int
+
 
 class VarSizeTest(unittest.TestCase):
     def test_resize(self):
@@ -46,5 +47,6 @@ def test_zerosized_array(self):
         self.assertRaises(IndexError, array.__setitem__, -1, None)
         self.assertRaises(IndexError, array.__getitem__, -1)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_win32.py b/Lib/test/test_ctypes/test_win32.py
index e51bdc8ad6b071..01e624f76f0685 100644
--- a/Lib/test/test_ctypes/test_win32.py
+++ b/Lib/test/test_ctypes/test_win32.py
@@ -1,10 +1,15 @@
 # Windows specific tests
 
-from ctypes import *
-import unittest, sys
+import _ctypes_test
+import ctypes
+import errno
+import sys
+import unittest
+from ctypes import (CDLL, Structure, POINTER, pointer, sizeof, byref,
+                    _pointer_type_cache,
+                    c_void_p, c_char, c_int, c_long)
 from test import support
 
-import _ctypes_test
 
 @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
 class FunctionCallTestCase(unittest.TestCase):
@@ -14,15 +19,17 @@ class FunctionCallTestCase(unittest.TestCase):
     def test_SEH(self):
         # Disable faulthandler to prevent logging the warning:
         # "Windows fatal exception: access violation"
+        kernel32 = ctypes.windll.kernel32
         with support.disable_faulthandler():
             # Call functions with invalid arguments, and make sure
             # that access violations are trapped and raise an
             # exception.
-            self.assertRaises(OSError, windll.kernel32.GetModuleHandleA, 32)
+            self.assertRaises(OSError, kernel32.GetModuleHandleA, 32)
 
     def test_noargs(self):
         # This is a special case on win32 x64
-        windll.user32.GetDesktopWindow()
+        user32 = ctypes.windll.user32
+        user32.GetDesktopWindow()
 
 
 @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
@@ -42,7 +49,6 @@ class S(Structure):
                 self.assertEqual(value, expected)
 
 
-
 @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
 class TestWintypes(unittest.TestCase):
     def test_HWND(self):
@@ -67,29 +73,31 @@ def test_COMError(self):
         self.assertEqual(ex.text, "text")
         self.assertEqual(ex.details, ("details",))
 
+
 @unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
 class TestWinError(unittest.TestCase):
     def test_winerror(self):
         # see Issue 16169
-        import errno
         ERROR_INVALID_PARAMETER = 87
-        msg = FormatError(ERROR_INVALID_PARAMETER).strip()
+        msg = ctypes.FormatError(ERROR_INVALID_PARAMETER).strip()
         args = (errno.EINVAL, msg, None, ERROR_INVALID_PARAMETER)
 
-        e = WinError(ERROR_INVALID_PARAMETER)
+        e = ctypes.WinError(ERROR_INVALID_PARAMETER)
         self.assertEqual(e.args, args)
         self.assertEqual(e.errno, errno.EINVAL)
         self.assertEqual(e.winerror, ERROR_INVALID_PARAMETER)
 
-        windll.kernel32.SetLastError(ERROR_INVALID_PARAMETER)
+        kernel32 = ctypes.windll.kernel32
+        kernel32.SetLastError(ERROR_INVALID_PARAMETER)
         try:
-            raise WinError()
+            raise ctypes.WinError()
         except OSError as exc:
             e = exc
         self.assertEqual(e.args, args)
         self.assertEqual(e.errno, errno.EINVAL)
         self.assertEqual(e.winerror, ERROR_INVALID_PARAMETER)
 
+
 class Structures(unittest.TestCase):
     def test_struct_by_value(self):
         class POINT(Structure):
@@ -129,8 +137,8 @@ class RECT(Structure):
             self.assertEqual(ret.bottom, bottom.value)
 
         # to not leak references, we must clean _pointer_type_cache
-        from ctypes import _pointer_type_cache
         del _pointer_type_cache[RECT]
 
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_wintypes.py b/Lib/test/test_ctypes/test_wintypes.py
index a01b9b1d0f3109..a04d725a47395e 100644
--- a/Lib/test/test_ctypes/test_wintypes.py
+++ b/Lib/test/test_ctypes/test_wintypes.py
@@ -1,11 +1,10 @@
 # See <https://learn.microsoft.com/en-us/windows/win32/winprog/windows-data-types>
 # for reference.
+#
+# Tests also work on POSIX
 
 import unittest
-
-# also work on POSIX
-
-from ctypes import *
+from ctypes import POINTER, cast, c_int16
 from ctypes import wintypes
 
 
diff --git a/Lib/test/test_curses.py b/Lib/test/test_curses.py
index 3ab837e4f95681..31bc108e7712ea 100644
--- a/Lib/test/test_curses.py
+++ b/Lib/test/test_curses.py
@@ -1364,26 +1364,33 @@ def test_move_left(self):
         self.mock_win.reset_mock()
         self.textbox.do_command(curses.KEY_LEFT)
         self.mock_win.move.assert_called_with(1, 0)
+        self.mock_win.reset_mock()
+
+    def test_move_right(self):
+        """Test moving the cursor right."""
+        self.mock_win.reset_mock()
         self.textbox.do_command(curses.KEY_RIGHT)
         self.mock_win.move.assert_called_with(1, 2)
         self.mock_win.reset_mock()
 
-    def test_move_left(self):
-        """Test moving the cursor left."""
+    def test_move_left_and_right(self):
+        """Test moving the cursor left and then right."""
         self.mock_win.reset_mock()
+        self.textbox.do_command(curses.KEY_LEFT)
+        self.mock_win.move.assert_called_with(1, 0)
         self.textbox.do_command(curses.KEY_RIGHT)
         self.mock_win.move.assert_called_with(1, 2)
         self.mock_win.reset_mock()
 
     def test_move_up(self):
-        """Test moving the cursor left."""
+        """Test moving the cursor up."""
         self.mock_win.reset_mock()
         self.textbox.do_command(curses.KEY_UP)
         self.mock_win.move.assert_called_with(0, 1)
         self.mock_win.reset_mock()
 
     def test_move_down(self):
-        """Test moving the cursor left."""
+        """Test moving the cursor down."""
         self.mock_win.reset_mock()
         self.textbox.do_command(curses.KEY_DOWN)
         self.mock_win.move.assert_called_with(2, 1)
diff --git a/Lib/test/test_dataclasses.py b/Lib/test/test_dataclasses.py
deleted file mode 100644
index 6669f1c57e2e78..00000000000000
--- a/Lib/test/test_dataclasses.py
+++ /dev/null
@@ -1,4547 +0,0 @@
-# Deliberately use "from dataclasses import *".  Every name in __all__
-# is tested, so they all must be present.  This is a way to catch
-# missing ones.
-
-from dataclasses import *
-
-import abc
-import io
-import pickle
-import inspect
-import builtins
-import types
-import weakref
-import traceback
-import unittest
-from unittest.mock import Mock
-from typing import ClassVar, Any, List, Union, Tuple, Dict, Generic, TypeVar, Optional, Protocol, DefaultDict
-from typing import get_type_hints
-from collections import deque, OrderedDict, namedtuple, defaultdict
-from functools import total_ordering
-
-import typing       # Needed for the string "typing.ClassVar[int]" to work as an annotation.
-import dataclasses  # Needed for the string "dataclasses.InitVar[int]" to work as an annotation.
-
-# Just any custom exception we can catch.
-class CustomError(Exception): pass
-
-class TestCase(unittest.TestCase):
-    def test_no_fields(self):
-        @dataclass
-        class C:
-            pass
-
-        o = C()
-        self.assertEqual(len(fields(C)), 0)
-
-    def test_no_fields_but_member_variable(self):
-        @dataclass
-        class C:
-            i = 0
-
-        o = C()
-        self.assertEqual(len(fields(C)), 0)
-
-    def test_one_field_no_default(self):
-        @dataclass
-        class C:
-            x: int
-
-        o = C(42)
-        self.assertEqual(o.x, 42)
-
-    def test_field_default_default_factory_error(self):
-        msg = "cannot specify both default and default_factory"
-        with self.assertRaisesRegex(ValueError, msg):
-            @dataclass
-            class C:
-                x: int = field(default=1, default_factory=int)
-
-    def test_field_repr(self):
-        int_field = field(default=1, init=True, repr=False)
-        int_field.name = "id"
-        repr_output = repr(int_field)
-        expected_output = "Field(name='id',type=None," \
-                           f"default=1,default_factory={MISSING!r}," \
-                           "init=True,repr=False,hash=None," \
-                           "compare=True,metadata=mappingproxy({})," \
-                           f"kw_only={MISSING!r}," \
-                           "_field_type=None)"
-
-        self.assertEqual(repr_output, expected_output)
-
-    def test_field_recursive_repr(self):
-        rec_field = field()
-        rec_field.type = rec_field
-        rec_field.name = "id"
-        repr_output = repr(rec_field)
-
-        self.assertIn(",type=...,", repr_output)
-
-    def test_recursive_annotation(self):
-        class C:
-            pass
-
-        @dataclass
-        class D:
-            C: C = field()
-
-        self.assertIn(",type=...,", repr(D.__dataclass_fields__["C"]))
-
-    def test_dataclass_params_repr(self):
-        # Even though this is testing an internal implementation detail,
-        # it's testing a feature we want to make sure is correctly implemented
-        # for the sake of dataclasses itself
-        @dataclass(slots=True, frozen=True)
-        class Some: pass
-
-        repr_output = repr(Some.__dataclass_params__)
-        expected_output = "_DataclassParams(init=True,repr=True," \
-                          "eq=True,order=False,unsafe_hash=False,frozen=True," \
-                          "match_args=True,kw_only=False," \
-                          "slots=True,weakref_slot=False)"
-        self.assertEqual(repr_output, expected_output)
-
-    def test_dataclass_params_signature(self):
-        # Even though this is testing an internal implementation detail,
-        # it's testing a feature we want to make sure is correctly implemented
-        # for the sake of dataclasses itself
-        @dataclass
-        class Some: pass
-
-        for param in inspect.signature(dataclass).parameters:
-            if param == 'cls':
-                continue
-            self.assertTrue(hasattr(Some.__dataclass_params__, param), msg=param)
-
-    def test_named_init_params(self):
-        @dataclass
-        class C:
-            x: int
-
-        o = C(x=32)
-        self.assertEqual(o.x, 32)
-
-    def test_two_fields_one_default(self):
-        @dataclass
-        class C:
-            x: int
-            y: int = 0
-
-        o = C(3)
-        self.assertEqual((o.x, o.y), (3, 0))
-
-        # Non-defaults following defaults.
-        with self.assertRaisesRegex(TypeError,
-                                    "non-default argument 'y' follows "
-                                    "default argument"):
-            @dataclass
-            class C:
-                x: int = 0
-                y: int
-
-        # A derived class adds a non-default field after a default one.
-        with self.assertRaisesRegex(TypeError,
-                                    "non-default argument 'y' follows "
-                                    "default argument"):
-            @dataclass
-            class B:
-                x: int = 0
-
-            @dataclass
-            class C(B):
-                y: int
-
-        # Override a base class field and add a default to
-        #  a field which didn't use to have a default.
-        with self.assertRaisesRegex(TypeError,
-                                    "non-default argument 'y' follows "
-                                    "default argument"):
-            @dataclass
-            class B:
-                x: int
-                y: int
-
-            @dataclass
-            class C(B):
-                x: int = 0
-
-    def test_overwrite_hash(self):
-        # Test that declaring this class isn't an error.  It should
-        #  use the user-provided __hash__.
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            def __hash__(self):
-                return 301
-        self.assertEqual(hash(C(100)), 301)
-
-        # Test that declaring this class isn't an error.  It should
-        #  use the generated __hash__.
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            def __eq__(self, other):
-                return False
-        self.assertEqual(hash(C(100)), hash((100,)))
-
-        # But this one should generate an exception, because with
-        #  unsafe_hash=True, it's an error to have a __hash__ defined.
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __hash__'):
-            @dataclass(unsafe_hash=True)
-            class C:
-                def __hash__(self):
-                    pass
-
-        # Creating this class should not generate an exception,
-        #  because even though __hash__ exists before @dataclass is
-        #  called, (due to __eq__ being defined), since it's None
-        #  that's okay.
-        @dataclass(unsafe_hash=True)
-        class C:
-            x: int
-            def __eq__(self):
-                pass
-        # The generated hash function works as we'd expect.
-        self.assertEqual(hash(C(10)), hash((10,)))
-
-        # Creating this class should generate an exception, because
-        #  __hash__ exists and is not None, which it would be if it
-        #  had been auto-generated due to __eq__ being defined.
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __hash__'):
-            @dataclass(unsafe_hash=True)
-            class C:
-                x: int
-                def __eq__(self):
-                    pass
-                def __hash__(self):
-                    pass
-
-    def test_overwrite_fields_in_derived_class(self):
-        # Note that x from C1 replaces x in Base, but the order remains
-        #  the same as defined in Base.
-        @dataclass
-        class Base:
-            x: Any = 15.0
-            y: int = 0
-
-        @dataclass
-        class C1(Base):
-            z: int = 10
-            x: int = 15
-
-        o = Base()
-        self.assertEqual(repr(o), 'TestCase.test_overwrite_fields_in_derived_class.<locals>.Base(x=15.0, y=0)')
-
-        o = C1()
-        self.assertEqual(repr(o), 'TestCase.test_overwrite_fields_in_derived_class.<locals>.C1(x=15, y=0, z=10)')
-
-        o = C1(x=5)
-        self.assertEqual(repr(o), 'TestCase.test_overwrite_fields_in_derived_class.<locals>.C1(x=5, y=0, z=10)')
-
-    def test_field_named_self(self):
-        @dataclass
-        class C:
-            self: str
-        c=C('foo')
-        self.assertEqual(c.self, 'foo')
-
-        # Make sure the first parameter is not named 'self'.
-        sig = inspect.signature(C.__init__)
-        first = next(iter(sig.parameters))
-        self.assertNotEqual('self', first)
-
-        # But we do use 'self' if no field named self.
-        @dataclass
-        class C:
-            selfx: str
-
-        # Make sure the first parameter is named 'self'.
-        sig = inspect.signature(C.__init__)
-        first = next(iter(sig.parameters))
-        self.assertEqual('self', first)
-
-    def test_field_named_object(self):
-        @dataclass
-        class C:
-            object: str
-        c = C('foo')
-        self.assertEqual(c.object, 'foo')
-
-    def test_field_named_object_frozen(self):
-        @dataclass(frozen=True)
-        class C:
-            object: str
-        c = C('foo')
-        self.assertEqual(c.object, 'foo')
-
-    def test_field_named_BUILTINS_frozen(self):
-        # gh-96151
-        @dataclass(frozen=True)
-        class C:
-            BUILTINS: int
-        c = C(5)
-        self.assertEqual(c.BUILTINS, 5)
-
-    def test_field_with_special_single_underscore_names(self):
-        # gh-98886
-
-        @dataclass
-        class X:
-            x: int = field(default_factory=lambda: 111)
-            _dflt_x: int = field(default_factory=lambda: 222)
-
-        X()
-
-        @dataclass
-        class Y:
-            y: int = field(default_factory=lambda: 111)
-            _HAS_DEFAULT_FACTORY: int = 222
-
-        assert Y(y=222).y == 222
-
-    def test_field_named_like_builtin(self):
-        # Attribute names can shadow built-in names
-        # since code generation is used.
-        # Ensure that this is not happening.
-        exclusions = {'None', 'True', 'False'}
-        builtins_names = sorted(
-            b for b in builtins.__dict__.keys()
-            if not b.startswith('__') and b not in exclusions
-        )
-        attributes = [(name, str) for name in builtins_names]
-        C = make_dataclass('C', attributes)
-
-        c = C(*[name for name in builtins_names])
-
-        for name in builtins_names:
-            self.assertEqual(getattr(c, name), name)
-
-    def test_field_named_like_builtin_frozen(self):
-        # Attribute names can shadow built-in names
-        # since code generation is used.
-        # Ensure that this is not happening
-        # for frozen data classes.
-        exclusions = {'None', 'True', 'False'}
-        builtins_names = sorted(
-            b for b in builtins.__dict__.keys()
-            if not b.startswith('__') and b not in exclusions
-        )
-        attributes = [(name, str) for name in builtins_names]
-        C = make_dataclass('C', attributes, frozen=True)
-
-        c = C(*[name for name in builtins_names])
-
-        for name in builtins_names:
-            self.assertEqual(getattr(c, name), name)
-
-    def test_0_field_compare(self):
-        # Ensure that order=False is the default.
-        @dataclass
-        class C0:
-            pass
-
-        @dataclass(order=False)
-        class C1:
-            pass
-
-        for cls in [C0, C1]:
-            with self.subTest(cls=cls):
-                self.assertEqual(cls(), cls())
-                for idx, fn in enumerate([lambda a, b: a < b,
-                                          lambda a, b: a <= b,
-                                          lambda a, b: a > b,
-                                          lambda a, b: a >= b]):
-                    with self.subTest(idx=idx):
-                        with self.assertRaisesRegex(TypeError,
-                                                    f"not supported between instances of '{cls.__name__}' and '{cls.__name__}'"):
-                            fn(cls(), cls())
-
-        @dataclass(order=True)
-        class C:
-            pass
-        self.assertLessEqual(C(), C())
-        self.assertGreaterEqual(C(), C())
-
-    def test_1_field_compare(self):
-        # Ensure that order=False is the default.
-        @dataclass
-        class C0:
-            x: int
-
-        @dataclass(order=False)
-        class C1:
-            x: int
-
-        for cls in [C0, C1]:
-            with self.subTest(cls=cls):
-                self.assertEqual(cls(1), cls(1))
-                self.assertNotEqual(cls(0), cls(1))
-                for idx, fn in enumerate([lambda a, b: a < b,
-                                          lambda a, b: a <= b,
-                                          lambda a, b: a > b,
-                                          lambda a, b: a >= b]):
-                    with self.subTest(idx=idx):
-                        with self.assertRaisesRegex(TypeError,
-                                                    f"not supported between instances of '{cls.__name__}' and '{cls.__name__}'"):
-                            fn(cls(0), cls(0))
-
-        @dataclass(order=True)
-        class C:
-            x: int
-        self.assertLess(C(0), C(1))
-        self.assertLessEqual(C(0), C(1))
-        self.assertLessEqual(C(1), C(1))
-        self.assertGreater(C(1), C(0))
-        self.assertGreaterEqual(C(1), C(0))
-        self.assertGreaterEqual(C(1), C(1))
-
-    def test_simple_compare(self):
-        # Ensure that order=False is the default.
-        @dataclass
-        class C0:
-            x: int
-            y: int
-
-        @dataclass(order=False)
-        class C1:
-            x: int
-            y: int
-
-        for cls in [C0, C1]:
-            with self.subTest(cls=cls):
-                self.assertEqual(cls(0, 0), cls(0, 0))
-                self.assertEqual(cls(1, 2), cls(1, 2))
-                self.assertNotEqual(cls(1, 0), cls(0, 0))
-                self.assertNotEqual(cls(1, 0), cls(1, 1))
-                for idx, fn in enumerate([lambda a, b: a < b,
-                                          lambda a, b: a <= b,
-                                          lambda a, b: a > b,
-                                          lambda a, b: a >= b]):
-                    with self.subTest(idx=idx):
-                        with self.assertRaisesRegex(TypeError,
-                                                    f"not supported between instances of '{cls.__name__}' and '{cls.__name__}'"):
-                            fn(cls(0, 0), cls(0, 0))
-
-        @dataclass(order=True)
-        class C:
-            x: int
-            y: int
-
-        for idx, fn in enumerate([lambda a, b: a == b,
-                                  lambda a, b: a <= b,
-                                  lambda a, b: a >= b]):
-            with self.subTest(idx=idx):
-                self.assertTrue(fn(C(0, 0), C(0, 0)))
-
-        for idx, fn in enumerate([lambda a, b: a < b,
-                                  lambda a, b: a <= b,
-                                  lambda a, b: a != b]):
-            with self.subTest(idx=idx):
-                self.assertTrue(fn(C(0, 0), C(0, 1)))
-                self.assertTrue(fn(C(0, 1), C(1, 0)))
-                self.assertTrue(fn(C(1, 0), C(1, 1)))
-
-        for idx, fn in enumerate([lambda a, b: a > b,
-                                  lambda a, b: a >= b,
-                                  lambda a, b: a != b]):
-            with self.subTest(idx=idx):
-                self.assertTrue(fn(C(0, 1), C(0, 0)))
-                self.assertTrue(fn(C(1, 0), C(0, 1)))
-                self.assertTrue(fn(C(1, 1), C(1, 0)))
-
-    def test_compare_subclasses(self):
-        # Comparisons fail for subclasses, even if no fields
-        #  are added.
-        @dataclass
-        class B:
-            i: int
-
-        @dataclass
-        class C(B):
-            pass
-
-        for idx, (fn, expected) in enumerate([(lambda a, b: a == b, False),
-                                              (lambda a, b: a != b, True)]):
-            with self.subTest(idx=idx):
-                self.assertEqual(fn(B(0), C(0)), expected)
-
-        for idx, fn in enumerate([lambda a, b: a < b,
-                                  lambda a, b: a <= b,
-                                  lambda a, b: a > b,
-                                  lambda a, b: a >= b]):
-            with self.subTest(idx=idx):
-                with self.assertRaisesRegex(TypeError,
-                                            "not supported between instances of 'B' and 'C'"):
-                    fn(B(0), C(0))
-
-    def test_eq_order(self):
-        # Test combining eq and order.
-        for (eq,    order, result   ) in [
-            (False, False, 'neither'),
-            (False, True,  'exception'),
-            (True,  False, 'eq_only'),
-            (True,  True,  'both'),
-        ]:
-            with self.subTest(eq=eq, order=order):
-                if result == 'exception':
-                    with self.assertRaisesRegex(ValueError, 'eq must be true if order is true'):
-                        @dataclass(eq=eq, order=order)
-                        class C:
-                            pass
-                else:
-                    @dataclass(eq=eq, order=order)
-                    class C:
-                        pass
-
-                    if result == 'neither':
-                        self.assertNotIn('__eq__', C.__dict__)
-                        self.assertNotIn('__lt__', C.__dict__)
-                        self.assertNotIn('__le__', C.__dict__)
-                        self.assertNotIn('__gt__', C.__dict__)
-                        self.assertNotIn('__ge__', C.__dict__)
-                    elif result == 'both':
-                        self.assertIn('__eq__', C.__dict__)
-                        self.assertIn('__lt__', C.__dict__)
-                        self.assertIn('__le__', C.__dict__)
-                        self.assertIn('__gt__', C.__dict__)
-                        self.assertIn('__ge__', C.__dict__)
-                    elif result == 'eq_only':
-                        self.assertIn('__eq__', C.__dict__)
-                        self.assertNotIn('__lt__', C.__dict__)
-                        self.assertNotIn('__le__', C.__dict__)
-                        self.assertNotIn('__gt__', C.__dict__)
-                        self.assertNotIn('__ge__', C.__dict__)
-                    else:
-                        assert False, f'unknown result {result!r}'
-
-    def test_field_no_default(self):
-        @dataclass
-        class C:
-            x: int = field()
-
-        self.assertEqual(C(5).x, 5)
-
-        with self.assertRaisesRegex(TypeError,
-                                    r"__init__\(\) missing 1 required "
-                                    "positional argument: 'x'"):
-            C()
-
-    def test_field_default(self):
-        default = object()
-        @dataclass
-        class C:
-            x: object = field(default=default)
-
-        self.assertIs(C.x, default)
-        c = C(10)
-        self.assertEqual(c.x, 10)
-
-        # If we delete the instance attribute, we should then see the
-        #  class attribute.
-        del c.x
-        self.assertIs(c.x, default)
-
-        self.assertIs(C().x, default)
-
-    def test_not_in_repr(self):
-        @dataclass
-        class C:
-            x: int = field(repr=False)
-        with self.assertRaises(TypeError):
-            C()
-        c = C(10)
-        self.assertEqual(repr(c), 'TestCase.test_not_in_repr.<locals>.C()')
-
-        @dataclass
-        class C:
-            x: int = field(repr=False)
-            y: int
-        c = C(10, 20)
-        self.assertEqual(repr(c), 'TestCase.test_not_in_repr.<locals>.C(y=20)')
-
-    def test_not_in_compare(self):
-        @dataclass
-        class C:
-            x: int = 0
-            y: int = field(compare=False, default=4)
-
-        self.assertEqual(C(), C(0, 20))
-        self.assertEqual(C(1, 10), C(1, 20))
-        self.assertNotEqual(C(3), C(4, 10))
-        self.assertNotEqual(C(3, 10), C(4, 10))
-
-    def test_no_unhashable_default(self):
-        # See bpo-44674.
-        class Unhashable:
-            __hash__ = None
-
-        unhashable_re = 'mutable default .* for field a is not allowed'
-        with self.assertRaisesRegex(ValueError, unhashable_re):
-            @dataclass
-            class A:
-                a: dict = {}
-
-        with self.assertRaisesRegex(ValueError, unhashable_re):
-            @dataclass
-            class A:
-                a: Any = Unhashable()
-
-        # Make sure that the machinery looking for hashability is using the
-        # class's __hash__, not the instance's __hash__.
-        with self.assertRaisesRegex(ValueError, unhashable_re):
-            unhashable = Unhashable()
-            # This shouldn't make the variable hashable.
-            unhashable.__hash__ = lambda: 0
-            @dataclass
-            class A:
-                a: Any = unhashable
-
-    def test_hash_field_rules(self):
-        # Test all 6 cases of:
-        #  hash=True/False/None
-        #  compare=True/False
-        for (hash_,    compare, result  ) in [
-            (True,     False,   'field' ),
-            (True,     True,    'field' ),
-            (False,    False,   'absent'),
-            (False,    True,    'absent'),
-            (None,     False,   'absent'),
-            (None,     True,    'field' ),
-            ]:
-            with self.subTest(hash=hash_, compare=compare):
-                @dataclass(unsafe_hash=True)
-                class C:
-                    x: int = field(compare=compare, hash=hash_, default=5)
-
-                if result == 'field':
-                    # __hash__ contains the field.
-                    self.assertEqual(hash(C(5)), hash((5,)))
-                elif result == 'absent':
-                    # The field is not present in the hash.
-                    self.assertEqual(hash(C(5)), hash(()))
-                else:
-                    assert False, f'unknown result {result!r}'
-
-    def test_init_false_no_default(self):
-        # If init=False and no default value, then the field won't be
-        #  present in the instance.
-        @dataclass
-        class C:
-            x: int = field(init=False)
-
-        self.assertNotIn('x', C().__dict__)
-
-        @dataclass
-        class C:
-            x: int
-            y: int = 0
-            z: int = field(init=False)
-            t: int = 10
-
-        self.assertNotIn('z', C(0).__dict__)
-        self.assertEqual(vars(C(5)), {'t': 10, 'x': 5, 'y': 0})
-
-    def test_class_marker(self):
-        @dataclass
-        class C:
-            x: int
-            y: str = field(init=False, default=None)
-            z: str = field(repr=False)
-
-        the_fields = fields(C)
-        # the_fields is a tuple of 3 items, each value
-        #  is in __annotations__.
-        self.assertIsInstance(the_fields, tuple)
-        for f in the_fields:
-            self.assertIs(type(f), Field)
-            self.assertIn(f.name, C.__annotations__)
-
-        self.assertEqual(len(the_fields), 3)
-
-        self.assertEqual(the_fields[0].name, 'x')
-        self.assertEqual(the_fields[0].type, int)
-        self.assertFalse(hasattr(C, 'x'))
-        self.assertTrue (the_fields[0].init)
-        self.assertTrue (the_fields[0].repr)
-        self.assertEqual(the_fields[1].name, 'y')
-        self.assertEqual(the_fields[1].type, str)
-        self.assertIsNone(getattr(C, 'y'))
-        self.assertFalse(the_fields[1].init)
-        self.assertTrue (the_fields[1].repr)
-        self.assertEqual(the_fields[2].name, 'z')
-        self.assertEqual(the_fields[2].type, str)
-        self.assertFalse(hasattr(C, 'z'))
-        self.assertTrue (the_fields[2].init)
-        self.assertFalse(the_fields[2].repr)
-
-    def test_field_order(self):
-        @dataclass
-        class B:
-            a: str = 'B:a'
-            b: str = 'B:b'
-            c: str = 'B:c'
-
-        @dataclass
-        class C(B):
-            b: str = 'C:b'
-
-        self.assertEqual([(f.name, f.default) for f in fields(C)],
-                         [('a', 'B:a'),
-                          ('b', 'C:b'),
-                          ('c', 'B:c')])
-
-        @dataclass
-        class D(B):
-            c: str = 'D:c'
-
-        self.assertEqual([(f.name, f.default) for f in fields(D)],
-                         [('a', 'B:a'),
-                          ('b', 'B:b'),
-                          ('c', 'D:c')])
-
-        @dataclass
-        class E(D):
-            a: str = 'E:a'
-            d: str = 'E:d'
-
-        self.assertEqual([(f.name, f.default) for f in fields(E)],
-                         [('a', 'E:a'),
-                          ('b', 'B:b'),
-                          ('c', 'D:c'),
-                          ('d', 'E:d')])
-
-    def test_class_attrs(self):
-        # We only have a class attribute if a default value is
-        #  specified, either directly or via a field with a default.
-        default = object()
-        @dataclass
-        class C:
-            x: int
-            y: int = field(repr=False)
-            z: object = default
-            t: int = field(default=100)
-
-        self.assertFalse(hasattr(C, 'x'))
-        self.assertFalse(hasattr(C, 'y'))
-        self.assertIs   (C.z, default)
-        self.assertEqual(C.t, 100)
-
-    def test_disallowed_mutable_defaults(self):
-        # For the known types, don't allow mutable default values.
-        for typ, empty, non_empty in [(list, [], [1]),
-                                      (dict, {}, {0:1}),
-                                      (set, set(), set([1])),
-                                      ]:
-            with self.subTest(typ=typ):
-                # Can't use a zero-length value.
-                with self.assertRaisesRegex(ValueError,
-                                            f'mutable default {typ} for field '
-                                            'x is not allowed'):
-                    @dataclass
-                    class Point:
-                        x: typ = empty
-
-
-                # Nor a non-zero-length value
-                with self.assertRaisesRegex(ValueError,
-                                            f'mutable default {typ} for field '
-                                            'y is not allowed'):
-                    @dataclass
-                    class Point:
-                        y: typ = non_empty
-
-                # Check subtypes also fail.
-                class Subclass(typ): pass
-
-                with self.assertRaisesRegex(ValueError,
-                                            "mutable default .*Subclass'>"
-                                            " for field z is not allowed"
-                                            ):
-                    @dataclass
-                    class Point:
-                        z: typ = Subclass()
-
-                # Because this is a ClassVar, it can be mutable.
-                @dataclass
-                class C:
-                    z: ClassVar[typ] = typ()
-
-                # Because this is a ClassVar, it can be mutable.
-                @dataclass
-                class C:
-                    x: ClassVar[typ] = Subclass()
-
-    def test_deliberately_mutable_defaults(self):
-        # If a mutable default isn't in the known list of
-        #  (list, dict, set), then it's okay.
-        class Mutable:
-            def __init__(self):
-                self.l = []
-
-        @dataclass
-        class C:
-            x: Mutable
-
-        # These 2 instances will share this value of x.
-        lst = Mutable()
-        o1 = C(lst)
-        o2 = C(lst)
-        self.assertEqual(o1, o2)
-        o1.x.l.extend([1, 2])
-        self.assertEqual(o1, o2)
-        self.assertEqual(o1.x.l, [1, 2])
-        self.assertIs(o1.x, o2.x)
-
-    def test_no_options(self):
-        # Call with dataclass().
-        @dataclass()
-        class C:
-            x: int
-
-        self.assertEqual(C(42).x, 42)
-
-    def test_not_tuple(self):
-        # Make sure we can't be compared to a tuple.
-        @dataclass
-        class Point:
-            x: int
-            y: int
-        self.assertNotEqual(Point(1, 2), (1, 2))
-
-        # And that we can't compare to another unrelated dataclass.
-        @dataclass
-        class C:
-            x: int
-            y: int
-        self.assertNotEqual(Point(1, 3), C(1, 3))
-
-    def test_not_other_dataclass(self):
-        # Test that some of the problems with namedtuple don't happen
-        #  here.
-        @dataclass
-        class Point3D:
-            x: int
-            y: int
-            z: int
-
-        @dataclass
-        class Date:
-            year: int
-            month: int
-            day: int
-
-        self.assertNotEqual(Point3D(2017, 6, 3), Date(2017, 6, 3))
-        self.assertNotEqual(Point3D(1, 2, 3), (1, 2, 3))
-
-        # Make sure we can't unpack.
-        with self.assertRaisesRegex(TypeError, 'unpack'):
-            x, y, z = Point3D(4, 5, 6)
-
-        # Make sure another class with the same field names isn't
-        #  equal.
-        @dataclass
-        class Point3Dv1:
-            x: int = 0
-            y: int = 0
-            z: int = 0
-        self.assertNotEqual(Point3D(0, 0, 0), Point3Dv1())
-
-    def test_function_annotations(self):
-        # Some dummy class and instance to use as a default.
-        class F:
-            pass
-        f = F()
-
-        def validate_class(cls):
-            # First, check __annotations__, even though they're not
-            #  function annotations.
-            self.assertEqual(cls.__annotations__['i'], int)
-            self.assertEqual(cls.__annotations__['j'], str)
-            self.assertEqual(cls.__annotations__['k'], F)
-            self.assertEqual(cls.__annotations__['l'], float)
-            self.assertEqual(cls.__annotations__['z'], complex)
-
-            # Verify __init__.
-
-            signature = inspect.signature(cls.__init__)
-            # Check the return type, should be None.
-            self.assertIs(signature.return_annotation, None)
-
-            # Check each parameter.
-            params = iter(signature.parameters.values())
-            param = next(params)
-            # This is testing an internal name, and probably shouldn't be tested.
-            self.assertEqual(param.name, 'self')
-            param = next(params)
-            self.assertEqual(param.name, 'i')
-            self.assertIs   (param.annotation, int)
-            self.assertEqual(param.default, inspect.Parameter.empty)
-            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
-            param = next(params)
-            self.assertEqual(param.name, 'j')
-            self.assertIs   (param.annotation, str)
-            self.assertEqual(param.default, inspect.Parameter.empty)
-            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
-            param = next(params)
-            self.assertEqual(param.name, 'k')
-            self.assertIs   (param.annotation, F)
-            # Don't test for the default, since it's set to MISSING.
-            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
-            param = next(params)
-            self.assertEqual(param.name, 'l')
-            self.assertIs   (param.annotation, float)
-            # Don't test for the default, since it's set to MISSING.
-            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
-            self.assertRaises(StopIteration, next, params)
-
-
-        @dataclass
-        class C:
-            i: int
-            j: str
-            k: F = f
-            l: float=field(default=None)
-            z: complex=field(default=3+4j, init=False)
-
-        validate_class(C)
-
-        # Now repeat with __hash__.
-        @dataclass(frozen=True, unsafe_hash=True)
-        class C:
-            i: int
-            j: str
-            k: F = f
-            l: float=field(default=None)
-            z: complex=field(default=3+4j, init=False)
-
-        validate_class(C)
-
-    def test_missing_default(self):
-        # Test that MISSING works the same as a default not being
-        #  specified.
-        @dataclass
-        class C:
-            x: int=field(default=MISSING)
-        with self.assertRaisesRegex(TypeError,
-                                    r'__init__\(\) missing 1 required '
-                                    'positional argument'):
-            C()
-        self.assertNotIn('x', C.__dict__)
-
-        @dataclass
-        class D:
-            x: int
-        with self.assertRaisesRegex(TypeError,
-                                    r'__init__\(\) missing 1 required '
-                                    'positional argument'):
-            D()
-        self.assertNotIn('x', D.__dict__)
-
-    def test_missing_default_factory(self):
-        # Test that MISSING works the same as a default factory not
-        #  being specified (which is really the same as a default not
-        #  being specified, too).
-        @dataclass
-        class C:
-            x: int=field(default_factory=MISSING)
-        with self.assertRaisesRegex(TypeError,
-                                    r'__init__\(\) missing 1 required '
-                                    'positional argument'):
-            C()
-        self.assertNotIn('x', C.__dict__)
-
-        @dataclass
-        class D:
-            x: int=field(default=MISSING, default_factory=MISSING)
-        with self.assertRaisesRegex(TypeError,
-                                    r'__init__\(\) missing 1 required '
-                                    'positional argument'):
-            D()
-        self.assertNotIn('x', D.__dict__)
-
-    def test_missing_repr(self):
-        self.assertIn('MISSING_TYPE object', repr(MISSING))
-
-    def test_dont_include_other_annotations(self):
-        @dataclass
-        class C:
-            i: int
-            def foo(self) -> int:
-                return 4
-            @property
-            def bar(self) -> int:
-                return 5
-        self.assertEqual(list(C.__annotations__), ['i'])
-        self.assertEqual(C(10).foo(), 4)
-        self.assertEqual(C(10).bar, 5)
-        self.assertEqual(C(10).i, 10)
-
-    def test_post_init(self):
-        # Just make sure it gets called
-        @dataclass
-        class C:
-            def __post_init__(self):
-                raise CustomError()
-        with self.assertRaises(CustomError):
-            C()
-
-        @dataclass
-        class C:
-            i: int = 10
-            def __post_init__(self):
-                if self.i == 10:
-                    raise CustomError()
-        with self.assertRaises(CustomError):
-            C()
-        # post-init gets called, but doesn't raise. This is just
-        #  checking that self is used correctly.
-        C(5)
-
-        # If there's not an __init__, then post-init won't get called.
-        @dataclass(init=False)
-        class C:
-            def __post_init__(self):
-                raise CustomError()
-        # Creating the class won't raise
-        C()
-
-        @dataclass
-        class C:
-            x: int = 0
-            def __post_init__(self):
-                self.x *= 2
-        self.assertEqual(C().x, 0)
-        self.assertEqual(C(2).x, 4)
-
-        # Make sure that if we're frozen, post-init can't set
-        #  attributes.
-        @dataclass(frozen=True)
-        class C:
-            x: int = 0
-            def __post_init__(self):
-                self.x *= 2
-        with self.assertRaises(FrozenInstanceError):
-            C()
-
-    def test_post_init_super(self):
-        # Make sure super() post-init isn't called by default.
-        class B:
-            def __post_init__(self):
-                raise CustomError()
-
-        @dataclass
-        class C(B):
-            def __post_init__(self):
-                self.x = 5
-
-        self.assertEqual(C().x, 5)
-
-        # Now call super(), and it will raise.
-        @dataclass
-        class C(B):
-            def __post_init__(self):
-                super().__post_init__()
-
-        with self.assertRaises(CustomError):
-            C()
-
-        # Make sure post-init is called, even if not defined in our
-        #  class.
-        @dataclass
-        class C(B):
-            pass
-
-        with self.assertRaises(CustomError):
-            C()
-
-    def test_post_init_staticmethod(self):
-        flag = False
-        @dataclass
-        class C:
-            x: int
-            y: int
-            @staticmethod
-            def __post_init__():
-                nonlocal flag
-                flag = True
-
-        self.assertFalse(flag)
-        c = C(3, 4)
-        self.assertEqual((c.x, c.y), (3, 4))
-        self.assertTrue(flag)
-
-    def test_post_init_classmethod(self):
-        @dataclass
-        class C:
-            flag = False
-            x: int
-            y: int
-            @classmethod
-            def __post_init__(cls):
-                cls.flag = True
-
-        self.assertFalse(C.flag)
-        c = C(3, 4)
-        self.assertEqual((c.x, c.y), (3, 4))
-        self.assertTrue(C.flag)
-
-    def test_post_init_not_auto_added(self):
-        # See bpo-46757, which had proposed always adding __post_init__.  As
-        # Raymond Hettinger pointed out, that would be a breaking change.  So,
-        # add a test to make sure that the current behavior doesn't change.
-
-        @dataclass
-        class A0:
-            pass
-
-        @dataclass
-        class B0:
-            b_called: bool = False
-            def __post_init__(self):
-                self.b_called = True
-
-        @dataclass
-        class C0(A0, B0):
-            c_called: bool = False
-            def __post_init__(self):
-                super().__post_init__()
-                self.c_called = True
-
-        # Since A0 has no __post_init__, and one wasn't automatically added
-        # (because that's the rule: it's never added by @dataclass, it's only
-        # the class author that can add it), then B0.__post_init__ is called.
-        # Verify that.
-        c = C0()
-        self.assertTrue(c.b_called)
-        self.assertTrue(c.c_called)
-
-        ######################################
-        # Now, the same thing, except A1 defines __post_init__.
-        @dataclass
-        class A1:
-            def __post_init__(self):
-                pass
-
-        @dataclass
-        class B1:
-            b_called: bool = False
-            def __post_init__(self):
-                self.b_called = True
-
-        @dataclass
-        class C1(A1, B1):
-            c_called: bool = False
-            def __post_init__(self):
-                super().__post_init__()
-                self.c_called = True
-
-        # This time, B1.__post_init__ isn't being called.  This mimics what
-        # would happen if A1.__post_init__ had been automatically added,
-        # instead of manually added as we see here.  This test isn't really
-        # needed, but I'm including it just to demonstrate the changed
-        # behavior when A1 does define __post_init__.
-        c = C1()
-        self.assertFalse(c.b_called)
-        self.assertTrue(c.c_called)
-
-    def test_class_var(self):
-        # Make sure ClassVars are ignored in __init__, __repr__, etc.
-        @dataclass
-        class C:
-            x: int
-            y: int = 10
-            z: ClassVar[int] = 1000
-            w: ClassVar[int] = 2000
-            t: ClassVar[int] = 3000
-            s: ClassVar      = 4000
-
-        c = C(5)
-        self.assertEqual(repr(c), 'TestCase.test_class_var.<locals>.C(x=5, y=10)')
-        self.assertEqual(len(fields(C)), 2)                 # We have 2 fields.
-        self.assertEqual(len(C.__annotations__), 6)         # And 4 ClassVars.
-        self.assertEqual(c.z, 1000)
-        self.assertEqual(c.w, 2000)
-        self.assertEqual(c.t, 3000)
-        self.assertEqual(c.s, 4000)
-        C.z += 1
-        self.assertEqual(c.z, 1001)
-        c = C(20)
-        self.assertEqual((c.x, c.y), (20, 10))
-        self.assertEqual(c.z, 1001)
-        self.assertEqual(c.w, 2000)
-        self.assertEqual(c.t, 3000)
-        self.assertEqual(c.s, 4000)
-
-    def test_class_var_no_default(self):
-        # If a ClassVar has no default value, it should not be set on the class.
-        @dataclass
-        class C:
-            x: ClassVar[int]
-
-        self.assertNotIn('x', C.__dict__)
-
-    def test_class_var_default_factory(self):
-        # It makes no sense for a ClassVar to have a default factory. When
-        #  would it be called? Call it yourself, since it's class-wide.
-        with self.assertRaisesRegex(TypeError,
-                                    'cannot have a default factory'):
-            @dataclass
-            class C:
-                x: ClassVar[int] = field(default_factory=int)
-
-            self.assertNotIn('x', C.__dict__)
-
-    def test_class_var_with_default(self):
-        # If a ClassVar has a default value, it should be set on the class.
-        @dataclass
-        class C:
-            x: ClassVar[int] = 10
-        self.assertEqual(C.x, 10)
-
-        @dataclass
-        class C:
-            x: ClassVar[int] = field(default=10)
-        self.assertEqual(C.x, 10)
-
-    def test_class_var_frozen(self):
-        # Make sure ClassVars work even if we're frozen.
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            y: int = 10
-            z: ClassVar[int] = 1000
-            w: ClassVar[int] = 2000
-            t: ClassVar[int] = 3000
-
-        c = C(5)
-        self.assertEqual(repr(C(5)), 'TestCase.test_class_var_frozen.<locals>.C(x=5, y=10)')
-        self.assertEqual(len(fields(C)), 2)                 # We have 2 fields
-        self.assertEqual(len(C.__annotations__), 5)         # And 3 ClassVars
-        self.assertEqual(c.z, 1000)
-        self.assertEqual(c.w, 2000)
-        self.assertEqual(c.t, 3000)
-        # We can still modify the ClassVar, it's only instances that are
-        #  frozen.
-        C.z += 1
-        self.assertEqual(c.z, 1001)
-        c = C(20)
-        self.assertEqual((c.x, c.y), (20, 10))
-        self.assertEqual(c.z, 1001)
-        self.assertEqual(c.w, 2000)
-        self.assertEqual(c.t, 3000)
-
-    def test_init_var_no_default(self):
-        # If an InitVar has no default value, it should not be set on the class.
-        @dataclass
-        class C:
-            x: InitVar[int]
-
-        self.assertNotIn('x', C.__dict__)
-
-    def test_init_var_default_factory(self):
-        # It makes no sense for an InitVar to have a default factory. When
-        #  would it be called? Call it yourself, since it's class-wide.
-        with self.assertRaisesRegex(TypeError,
-                                    'cannot have a default factory'):
-            @dataclass
-            class C:
-                x: InitVar[int] = field(default_factory=int)
-
-            self.assertNotIn('x', C.__dict__)
-
-    def test_init_var_with_default(self):
-        # If an InitVar has a default value, it should be set on the class.
-        @dataclass
-        class C:
-            x: InitVar[int] = 10
-        self.assertEqual(C.x, 10)
-
-        @dataclass
-        class C:
-            x: InitVar[int] = field(default=10)
-        self.assertEqual(C.x, 10)
-
-    def test_init_var(self):
-        @dataclass
-        class C:
-            x: int = None
-            init_param: InitVar[int] = None
-
-            def __post_init__(self, init_param):
-                if self.x is None:
-                    self.x = init_param*2
-
-        c = C(init_param=10)
-        self.assertEqual(c.x, 20)
-
-    def test_init_var_preserve_type(self):
-        self.assertEqual(InitVar[int].type, int)
-
-        # Make sure the repr is correct.
-        self.assertEqual(repr(InitVar[int]), 'dataclasses.InitVar[int]')
-        self.assertEqual(repr(InitVar[List[int]]),
-                         'dataclasses.InitVar[typing.List[int]]')
-        self.assertEqual(repr(InitVar[list[int]]),
-                         'dataclasses.InitVar[list[int]]')
-        self.assertEqual(repr(InitVar[int|str]),
-                         'dataclasses.InitVar[int | str]')
-
-    def test_init_var_inheritance(self):
-        # Note that this deliberately tests that a dataclass need not
-        #  have a __post_init__ function if it has an InitVar field.
-        #  It could just be used in a derived class, as shown here.
-        @dataclass
-        class Base:
-            x: int
-            init_base: InitVar[int]
-
-        # We can instantiate by passing the InitVar, even though
-        #  it's not used.
-        b = Base(0, 10)
-        self.assertEqual(vars(b), {'x': 0})
-
-        @dataclass
-        class C(Base):
-            y: int
-            init_derived: InitVar[int]
-
-            def __post_init__(self, init_base, init_derived):
-                self.x = self.x + init_base
-                self.y = self.y + init_derived
-
-        c = C(10, 11, 50, 51)
-        self.assertEqual(vars(c), {'x': 21, 'y': 101})
-
-    def test_default_factory(self):
-        # Test a factory that returns a new list.
-        @dataclass
-        class C:
-            x: int
-            y: list = field(default_factory=list)
-
-        c0 = C(3)
-        c1 = C(3)
-        self.assertEqual(c0.x, 3)
-        self.assertEqual(c0.y, [])
-        self.assertEqual(c0, c1)
-        self.assertIsNot(c0.y, c1.y)
-        self.assertEqual(astuple(C(5, [1])), (5, [1]))
-
-        # Test a factory that returns a shared list.
-        l = []
-        @dataclass
-        class C:
-            x: int
-            y: list = field(default_factory=lambda: l)
-
-        c0 = C(3)
-        c1 = C(3)
-        self.assertEqual(c0.x, 3)
-        self.assertEqual(c0.y, [])
-        self.assertEqual(c0, c1)
-        self.assertIs(c0.y, c1.y)
-        self.assertEqual(astuple(C(5, [1])), (5, [1]))
-
-        # Test various other field flags.
-        # repr
-        @dataclass
-        class C:
-            x: list = field(default_factory=list, repr=False)
-        self.assertEqual(repr(C()), 'TestCase.test_default_factory.<locals>.C()')
-        self.assertEqual(C().x, [])
-
-        # hash
-        @dataclass(unsafe_hash=True)
-        class C:
-            x: list = field(default_factory=list, hash=False)
-        self.assertEqual(astuple(C()), ([],))
-        self.assertEqual(hash(C()), hash(()))
-
-        # init (see also test_default_factory_with_no_init)
-        @dataclass
-        class C:
-            x: list = field(default_factory=list, init=False)
-        self.assertEqual(astuple(C()), ([],))
-
-        # compare
-        @dataclass
-        class C:
-            x: list = field(default_factory=list, compare=False)
-        self.assertEqual(C(), C([1]))
-
-    def test_default_factory_with_no_init(self):
-        # We need a factory with a side effect.
-        factory = Mock()
-
-        @dataclass
-        class C:
-            x: list = field(default_factory=factory, init=False)
-
-        # Make sure the default factory is called for each new instance.
-        C().x
-        self.assertEqual(factory.call_count, 1)
-        C().x
-        self.assertEqual(factory.call_count, 2)
-
-    def test_default_factory_not_called_if_value_given(self):
-        # We need a factory that we can test if it's been called.
-        factory = Mock()
-
-        @dataclass
-        class C:
-            x: int = field(default_factory=factory)
-
-        # Make sure that if a field has a default factory function,
-        #  it's not called if a value is specified.
-        C().x
-        self.assertEqual(factory.call_count, 1)
-        self.assertEqual(C(10).x, 10)
-        self.assertEqual(factory.call_count, 1)
-        C().x
-        self.assertEqual(factory.call_count, 2)
-
-    def test_default_factory_derived(self):
-        # See bpo-32896.
-        @dataclass
-        class Foo:
-            x: dict = field(default_factory=dict)
-
-        @dataclass
-        class Bar(Foo):
-            y: int = 1
-
-        self.assertEqual(Foo().x, {})
-        self.assertEqual(Bar().x, {})
-        self.assertEqual(Bar().y, 1)
-
-        @dataclass
-        class Baz(Foo):
-            pass
-        self.assertEqual(Baz().x, {})
-
-    def test_intermediate_non_dataclass(self):
-        # Test that an intermediate class that defines
-        #  annotations does not define fields.
-
-        @dataclass
-        class A:
-            x: int
-
-        class B(A):
-            y: int
-
-        @dataclass
-        class C(B):
-            z: int
-
-        c = C(1, 3)
-        self.assertEqual((c.x, c.z), (1, 3))
-
-        # .y was not initialized.
-        with self.assertRaisesRegex(AttributeError,
-                                    'object has no attribute'):
-            c.y
-
-        # And if we again derive a non-dataclass, no fields are added.
-        class D(C):
-            t: int
-        d = D(4, 5)
-        self.assertEqual((d.x, d.z), (4, 5))
-
-    def test_classvar_default_factory(self):
-        # It's an error for a ClassVar to have a factory function.
-        with self.assertRaisesRegex(TypeError,
-                                    'cannot have a default factory'):
-            @dataclass
-            class C:
-                x: ClassVar[int] = field(default_factory=int)
-
-    def test_is_dataclass(self):
-        class NotDataClass:
-            pass
-
-        self.assertFalse(is_dataclass(0))
-        self.assertFalse(is_dataclass(int))
-        self.assertFalse(is_dataclass(NotDataClass))
-        self.assertFalse(is_dataclass(NotDataClass()))
-
-        @dataclass
-        class C:
-            x: int
-
-        @dataclass
-        class D:
-            d: C
-            e: int
-
-        c = C(10)
-        d = D(c, 4)
-
-        self.assertTrue(is_dataclass(C))
-        self.assertTrue(is_dataclass(c))
-        self.assertFalse(is_dataclass(c.x))
-        self.assertTrue(is_dataclass(d.d))
-        self.assertFalse(is_dataclass(d.e))
-
-    def test_is_dataclass_when_getattr_always_returns(self):
-        # See bpo-37868.
-        class A:
-            def __getattr__(self, key):
-                return 0
-        self.assertFalse(is_dataclass(A))
-        a = A()
-
-        # Also test for an instance attribute.
-        class B:
-            pass
-        b = B()
-        b.__dataclass_fields__ = []
-
-        for obj in a, b:
-            with self.subTest(obj=obj):
-                self.assertFalse(is_dataclass(obj))
-
-                # Indirect tests for _is_dataclass_instance().
-                with self.assertRaisesRegex(TypeError, 'should be called on dataclass instances'):
-                    asdict(obj)
-                with self.assertRaisesRegex(TypeError, 'should be called on dataclass instances'):
-                    astuple(obj)
-                with self.assertRaisesRegex(TypeError, 'should be called on dataclass instances'):
-                    replace(obj, x=0)
-
-    def test_is_dataclass_genericalias(self):
-        @dataclass
-        class A(types.GenericAlias):
-            origin: type
-            args: type
-        self.assertTrue(is_dataclass(A))
-        a = A(list, int)
-        self.assertTrue(is_dataclass(type(a)))
-        self.assertTrue(is_dataclass(a))
-
-
-    def test_helper_fields_with_class_instance(self):
-        # Check that we can call fields() on either a class or instance,
-        #  and get back the same thing.
-        @dataclass
-        class C:
-            x: int
-            y: float
-
-        self.assertEqual(fields(C), fields(C(0, 0.0)))
-
-    def test_helper_fields_exception(self):
-        # Check that TypeError is raised if not passed a dataclass or
-        #  instance.
-        with self.assertRaisesRegex(TypeError, 'dataclass type or instance'):
-            fields(0)
-
-        class C: pass
-        with self.assertRaisesRegex(TypeError, 'dataclass type or instance'):
-            fields(C)
-        with self.assertRaisesRegex(TypeError, 'dataclass type or instance'):
-            fields(C())
-
-    def test_clean_traceback_from_fields_exception(self):
-        stdout = io.StringIO()
-        try:
-            fields(object)
-        except TypeError as exc:
-            traceback.print_exception(exc, file=stdout)
-        printed_traceback = stdout.getvalue()
-        self.assertNotIn("AttributeError", printed_traceback)
-        self.assertNotIn("__dataclass_fields__", printed_traceback)
-
-    def test_helper_asdict(self):
-        # Basic tests for asdict(), it should return a new dictionary.
-        @dataclass
-        class C:
-            x: int
-            y: int
-        c = C(1, 2)
-
-        self.assertEqual(asdict(c), {'x': 1, 'y': 2})
-        self.assertEqual(asdict(c), asdict(c))
-        self.assertIsNot(asdict(c), asdict(c))
-        c.x = 42
-        self.assertEqual(asdict(c), {'x': 42, 'y': 2})
-        self.assertIs(type(asdict(c)), dict)
-
-    def test_helper_asdict_raises_on_classes(self):
-        # asdict() should raise on a class object.
-        @dataclass
-        class C:
-            x: int
-            y: int
-        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
-            asdict(C)
-        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
-            asdict(int)
-
-    def test_helper_asdict_copy_values(self):
-        @dataclass
-        class C:
-            x: int
-            y: List[int] = field(default_factory=list)
-        initial = []
-        c = C(1, initial)
-        d = asdict(c)
-        self.assertEqual(d['y'], initial)
-        self.assertIsNot(d['y'], initial)
-        c = C(1)
-        d = asdict(c)
-        d['y'].append(1)
-        self.assertEqual(c.y, [])
-
-    def test_helper_asdict_nested(self):
-        @dataclass
-        class UserId:
-            token: int
-            group: int
-        @dataclass
-        class User:
-            name: str
-            id: UserId
-        u = User('Joe', UserId(123, 1))
-        d = asdict(u)
-        self.assertEqual(d, {'name': 'Joe', 'id': {'token': 123, 'group': 1}})
-        self.assertIsNot(asdict(u), asdict(u))
-        u.id.group = 2
-        self.assertEqual(asdict(u), {'name': 'Joe',
-                                     'id': {'token': 123, 'group': 2}})
-
-    def test_helper_asdict_builtin_containers(self):
-        @dataclass
-        class User:
-            name: str
-            id: int
-        @dataclass
-        class GroupList:
-            id: int
-            users: List[User]
-        @dataclass
-        class GroupTuple:
-            id: int
-            users: Tuple[User, ...]
-        @dataclass
-        class GroupDict:
-            id: int
-            users: Dict[str, User]
-        a = User('Alice', 1)
-        b = User('Bob', 2)
-        gl = GroupList(0, [a, b])
-        gt = GroupTuple(0, (a, b))
-        gd = GroupDict(0, {'first': a, 'second': b})
-        self.assertEqual(asdict(gl), {'id': 0, 'users': [{'name': 'Alice', 'id': 1},
-                                                         {'name': 'Bob', 'id': 2}]})
-        self.assertEqual(asdict(gt), {'id': 0, 'users': ({'name': 'Alice', 'id': 1},
-                                                         {'name': 'Bob', 'id': 2})})
-        self.assertEqual(asdict(gd), {'id': 0, 'users': {'first': {'name': 'Alice', 'id': 1},
-                                                         'second': {'name': 'Bob', 'id': 2}}})
-
-    def test_helper_asdict_builtin_object_containers(self):
-        @dataclass
-        class Child:
-            d: object
-
-        @dataclass
-        class Parent:
-            child: Child
-
-        self.assertEqual(asdict(Parent(Child([1]))), {'child': {'d': [1]}})
-        self.assertEqual(asdict(Parent(Child({1: 2}))), {'child': {'d': {1: 2}}})
-
-    def test_helper_asdict_factory(self):
-        @dataclass
-        class C:
-            x: int
-            y: int
-        c = C(1, 2)
-        d = asdict(c, dict_factory=OrderedDict)
-        self.assertEqual(d, OrderedDict([('x', 1), ('y', 2)]))
-        self.assertIsNot(d, asdict(c, dict_factory=OrderedDict))
-        c.x = 42
-        d = asdict(c, dict_factory=OrderedDict)
-        self.assertEqual(d, OrderedDict([('x', 42), ('y', 2)]))
-        self.assertIs(type(d), OrderedDict)
-
-    def test_helper_asdict_namedtuple(self):
-        T = namedtuple('T', 'a b c')
-        @dataclass
-        class C:
-            x: str
-            y: T
-        c = C('outer', T(1, C('inner', T(11, 12, 13)), 2))
-
-        d = asdict(c)
-        self.assertEqual(d, {'x': 'outer',
-                             'y': T(1,
-                                    {'x': 'inner',
-                                     'y': T(11, 12, 13)},
-                                    2),
-                             }
-                         )
-
-        # Now with a dict_factory.  OrderedDict is convenient, but
-        # since it compares to dicts, we also need to have separate
-        # assertIs tests.
-        d = asdict(c, dict_factory=OrderedDict)
-        self.assertEqual(d, {'x': 'outer',
-                             'y': T(1,
-                                    {'x': 'inner',
-                                     'y': T(11, 12, 13)},
-                                    2),
-                             }
-                         )
-
-        # Make sure that the returned dicts are actually OrderedDicts.
-        self.assertIs(type(d), OrderedDict)
-        self.assertIs(type(d['y'][1]), OrderedDict)
-
-    def test_helper_asdict_namedtuple_key(self):
-        # Ensure that a field that contains a dict which has a
-        # namedtuple as a key works with asdict().
-
-        @dataclass
-        class C:
-            f: dict
-        T = namedtuple('T', 'a')
-
-        c = C({T('an a'): 0})
-
-        self.assertEqual(asdict(c), {'f': {T(a='an a'): 0}})
-
-    def test_helper_asdict_namedtuple_derived(self):
-        class T(namedtuple('Tbase', 'a')):
-            def my_a(self):
-                return self.a
-
-        @dataclass
-        class C:
-            f: T
-
-        t = T(6)
-        c = C(t)
-
-        d = asdict(c)
-        self.assertEqual(d, {'f': T(a=6)})
-        # Make sure that t has been copied, not used directly.
-        self.assertIsNot(d['f'], t)
-        self.assertEqual(d['f'].my_a(), 6)
-
-    def test_helper_asdict_defaultdict(self):
-        # Ensure asdict() does not throw exceptions when a
-        # defaultdict is a member of a dataclass
-        @dataclass
-        class C:
-            mp: DefaultDict[str, List]
-
-        dd = defaultdict(list)
-        dd["x"].append(12)
-        c = C(mp=dd)
-        d = asdict(c)
-
-        self.assertEqual(d, {"mp": {"x": [12]}})
-        self.assertTrue(d["mp"] is not c.mp)  # make sure defaultdict is copied
-
-    def test_helper_astuple(self):
-        # Basic tests for astuple(), it should return a new tuple.
-        @dataclass
-        class C:
-            x: int
-            y: int = 0
-        c = C(1)
-
-        self.assertEqual(astuple(c), (1, 0))
-        self.assertEqual(astuple(c), astuple(c))
-        self.assertIsNot(astuple(c), astuple(c))
-        c.y = 42
-        self.assertEqual(astuple(c), (1, 42))
-        self.assertIs(type(astuple(c)), tuple)
-
-    def test_helper_astuple_raises_on_classes(self):
-        # astuple() should raise on a class object.
-        @dataclass
-        class C:
-            x: int
-            y: int
-        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
-            astuple(C)
-        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
-            astuple(int)
-
-    def test_helper_astuple_copy_values(self):
-        @dataclass
-        class C:
-            x: int
-            y: List[int] = field(default_factory=list)
-        initial = []
-        c = C(1, initial)
-        t = astuple(c)
-        self.assertEqual(t[1], initial)
-        self.assertIsNot(t[1], initial)
-        c = C(1)
-        t = astuple(c)
-        t[1].append(1)
-        self.assertEqual(c.y, [])
-
-    def test_helper_astuple_nested(self):
-        @dataclass
-        class UserId:
-            token: int
-            group: int
-        @dataclass
-        class User:
-            name: str
-            id: UserId
-        u = User('Joe', UserId(123, 1))
-        t = astuple(u)
-        self.assertEqual(t, ('Joe', (123, 1)))
-        self.assertIsNot(astuple(u), astuple(u))
-        u.id.group = 2
-        self.assertEqual(astuple(u), ('Joe', (123, 2)))
-
-    def test_helper_astuple_builtin_containers(self):
-        @dataclass
-        class User:
-            name: str
-            id: int
-        @dataclass
-        class GroupList:
-            id: int
-            users: List[User]
-        @dataclass
-        class GroupTuple:
-            id: int
-            users: Tuple[User, ...]
-        @dataclass
-        class GroupDict:
-            id: int
-            users: Dict[str, User]
-        a = User('Alice', 1)
-        b = User('Bob', 2)
-        gl = GroupList(0, [a, b])
-        gt = GroupTuple(0, (a, b))
-        gd = GroupDict(0, {'first': a, 'second': b})
-        self.assertEqual(astuple(gl), (0, [('Alice', 1), ('Bob', 2)]))
-        self.assertEqual(astuple(gt), (0, (('Alice', 1), ('Bob', 2))))
-        self.assertEqual(astuple(gd), (0, {'first': ('Alice', 1), 'second': ('Bob', 2)}))
-
-    def test_helper_astuple_builtin_object_containers(self):
-        @dataclass
-        class Child:
-            d: object
-
-        @dataclass
-        class Parent:
-            child: Child
-
-        self.assertEqual(astuple(Parent(Child([1]))), (([1],),))
-        self.assertEqual(astuple(Parent(Child({1: 2}))), (({1: 2},),))
-
-    def test_helper_astuple_factory(self):
-        @dataclass
-        class C:
-            x: int
-            y: int
-        NT = namedtuple('NT', 'x y')
-        def nt(lst):
-            return NT(*lst)
-        c = C(1, 2)
-        t = astuple(c, tuple_factory=nt)
-        self.assertEqual(t, NT(1, 2))
-        self.assertIsNot(t, astuple(c, tuple_factory=nt))
-        c.x = 42
-        t = astuple(c, tuple_factory=nt)
-        self.assertEqual(t, NT(42, 2))
-        self.assertIs(type(t), NT)
-
-    def test_helper_astuple_namedtuple(self):
-        T = namedtuple('T', 'a b c')
-        @dataclass
-        class C:
-            x: str
-            y: T
-        c = C('outer', T(1, C('inner', T(11, 12, 13)), 2))
-
-        t = astuple(c)
-        self.assertEqual(t, ('outer', T(1, ('inner', (11, 12, 13)), 2)))
-
-        # Now, using a tuple_factory.  list is convenient here.
-        t = astuple(c, tuple_factory=list)
-        self.assertEqual(t, ['outer', T(1, ['inner', T(11, 12, 13)], 2)])
-
-    def test_helper_astuple_defaultdict(self):
-        # Ensure astuple() does not throw exceptions when a
-        # defaultdict is a member of a dataclass
-        @dataclass
-        class C:
-            mp: DefaultDict[str, List]
-
-        dd = defaultdict(list)
-        dd["x"].append(12)
-        c = C(mp=dd)
-        t = astuple(c)
-
-        self.assertEqual(t, ({"x": [12]},))
-        self.assertTrue(t[0] is not dd) # make sure defaultdict is copied
-
-    def test_dynamic_class_creation(self):
-        cls_dict = {'__annotations__': {'x': int, 'y': int},
-                    }
-
-        # Create the class.
-        cls = type('C', (), cls_dict)
-
-        # Make it a dataclass.
-        cls1 = dataclass(cls)
-
-        self.assertEqual(cls1, cls)
-        self.assertEqual(asdict(cls(1, 2)), {'x': 1, 'y': 2})
-
-    def test_dynamic_class_creation_using_field(self):
-        cls_dict = {'__annotations__': {'x': int, 'y': int},
-                    'y': field(default=5),
-                    }
-
-        # Create the class.
-        cls = type('C', (), cls_dict)
-
-        # Make it a dataclass.
-        cls1 = dataclass(cls)
-
-        self.assertEqual(cls1, cls)
-        self.assertEqual(asdict(cls1(1)), {'x': 1, 'y': 5})
-
-    def test_init_in_order(self):
-        @dataclass
-        class C:
-            a: int
-            b: int = field()
-            c: list = field(default_factory=list, init=False)
-            d: list = field(default_factory=list)
-            e: int = field(default=4, init=False)
-            f: int = 4
-
-        calls = []
-        def setattr(self, name, value):
-            calls.append((name, value))
-
-        C.__setattr__ = setattr
-        c = C(0, 1)
-        self.assertEqual(('a', 0), calls[0])
-        self.assertEqual(('b', 1), calls[1])
-        self.assertEqual(('c', []), calls[2])
-        self.assertEqual(('d', []), calls[3])
-        self.assertNotIn(('e', 4), calls)
-        self.assertEqual(('f', 4), calls[4])
-
-    def test_items_in_dicts(self):
-        @dataclass
-        class C:
-            a: int
-            b: list = field(default_factory=list, init=False)
-            c: list = field(default_factory=list)
-            d: int = field(default=4, init=False)
-            e: int = 0
-
-        c = C(0)
-        # Class dict
-        self.assertNotIn('a', C.__dict__)
-        self.assertNotIn('b', C.__dict__)
-        self.assertNotIn('c', C.__dict__)
-        self.assertIn('d', C.__dict__)
-        self.assertEqual(C.d, 4)
-        self.assertIn('e', C.__dict__)
-        self.assertEqual(C.e, 0)
-        # Instance dict
-        self.assertIn('a', c.__dict__)
-        self.assertEqual(c.a, 0)
-        self.assertIn('b', c.__dict__)
-        self.assertEqual(c.b, [])
-        self.assertIn('c', c.__dict__)
-        self.assertEqual(c.c, [])
-        self.assertNotIn('d', c.__dict__)
-        self.assertIn('e', c.__dict__)
-        self.assertEqual(c.e, 0)
-
-    def test_alternate_classmethod_constructor(self):
-        # Since __post_init__ can't take params, use a classmethod
-        #  alternate constructor.  This is mostly an example to show
-        #  how to use this technique.
-        @dataclass
-        class C:
-            x: int
-            @classmethod
-            def from_file(cls, filename):
-                # In a real example, create a new instance
-                #  and populate 'x' from contents of a file.
-                value_in_file = 20
-                return cls(value_in_file)
-
-        self.assertEqual(C.from_file('filename').x, 20)
-
-    def test_field_metadata_default(self):
-        # Make sure the default metadata is read-only and of
-        #  zero length.
-        @dataclass
-        class C:
-            i: int
-
-        self.assertFalse(fields(C)[0].metadata)
-        self.assertEqual(len(fields(C)[0].metadata), 0)
-        with self.assertRaisesRegex(TypeError,
-                                    'does not support item assignment'):
-            fields(C)[0].metadata['test'] = 3
-
-    def test_field_metadata_mapping(self):
-        # Make sure only a mapping can be passed as metadata
-        #  zero length.
-        with self.assertRaises(TypeError):
-            @dataclass
-            class C:
-                i: int = field(metadata=0)
-
-        # Make sure an empty dict works.
-        d = {}
-        @dataclass
-        class C:
-            i: int = field(metadata=d)
-        self.assertFalse(fields(C)[0].metadata)
-        self.assertEqual(len(fields(C)[0].metadata), 0)
-        # Update should work (see bpo-35960).
-        d['foo'] = 1
-        self.assertEqual(len(fields(C)[0].metadata), 1)
-        self.assertEqual(fields(C)[0].metadata['foo'], 1)
-        with self.assertRaisesRegex(TypeError,
-                                    'does not support item assignment'):
-            fields(C)[0].metadata['test'] = 3
-
-        # Make sure a non-empty dict works.
-        d = {'test': 10, 'bar': '42', 3: 'three'}
-        @dataclass
-        class C:
-            i: int = field(metadata=d)
-        self.assertEqual(len(fields(C)[0].metadata), 3)
-        self.assertEqual(fields(C)[0].metadata['test'], 10)
-        self.assertEqual(fields(C)[0].metadata['bar'], '42')
-        self.assertEqual(fields(C)[0].metadata[3], 'three')
-        # Update should work.
-        d['foo'] = 1
-        self.assertEqual(len(fields(C)[0].metadata), 4)
-        self.assertEqual(fields(C)[0].metadata['foo'], 1)
-        with self.assertRaises(KeyError):
-            # Non-existent key.
-            fields(C)[0].metadata['baz']
-        with self.assertRaisesRegex(TypeError,
-                                    'does not support item assignment'):
-            fields(C)[0].metadata['test'] = 3
-
-    def test_field_metadata_custom_mapping(self):
-        # Try a custom mapping.
-        class SimpleNameSpace:
-            def __init__(self, **kw):
-                self.__dict__.update(kw)
-
-            def __getitem__(self, item):
-                if item == 'xyzzy':
-                    return 'plugh'
-                return getattr(self, item)
-
-            def __len__(self):
-                return self.__dict__.__len__()
-
-        @dataclass
-        class C:
-            i: int = field(metadata=SimpleNameSpace(a=10))
-
-        self.assertEqual(len(fields(C)[0].metadata), 1)
-        self.assertEqual(fields(C)[0].metadata['a'], 10)
-        with self.assertRaises(AttributeError):
-            fields(C)[0].metadata['b']
-        # Make sure we're still talking to our custom mapping.
-        self.assertEqual(fields(C)[0].metadata['xyzzy'], 'plugh')
-
-    def test_generic_dataclasses(self):
-        T = TypeVar('T')
-
-        @dataclass
-        class LabeledBox(Generic[T]):
-            content: T
-            label: str = '<unknown>'
-
-        box = LabeledBox(42)
-        self.assertEqual(box.content, 42)
-        self.assertEqual(box.label, '<unknown>')
-
-        # Subscripting the resulting class should work, etc.
-        Alias = List[LabeledBox[int]]
-
-    def test_generic_extending(self):
-        S = TypeVar('S')
-        T = TypeVar('T')
-
-        @dataclass
-        class Base(Generic[T, S]):
-            x: T
-            y: S
-
-        @dataclass
-        class DataDerived(Base[int, T]):
-            new_field: str
-        Alias = DataDerived[str]
-        c = Alias(0, 'test1', 'test2')
-        self.assertEqual(astuple(c), (0, 'test1', 'test2'))
-
-        class NonDataDerived(Base[int, T]):
-            def new_method(self):
-                return self.y
-        Alias = NonDataDerived[float]
-        c = Alias(10, 1.0)
-        self.assertEqual(c.new_method(), 1.0)
-
-    def test_generic_dynamic(self):
-        T = TypeVar('T')
-
-        @dataclass
-        class Parent(Generic[T]):
-            x: T
-        Child = make_dataclass('Child', [('y', T), ('z', Optional[T], None)],
-                               bases=(Parent[int], Generic[T]), namespace={'other': 42})
-        self.assertIs(Child[int](1, 2).z, None)
-        self.assertEqual(Child[int](1, 2, 3).z, 3)
-        self.assertEqual(Child[int](1, 2, 3).other, 42)
-        # Check that type aliases work correctly.
-        Alias = Child[T]
-        self.assertEqual(Alias[int](1, 2).x, 1)
-        # Check MRO resolution.
-        self.assertEqual(Child.__mro__, (Child, Parent, Generic, object))
-
-    def test_dataclasses_pickleable(self):
-        global P, Q, R
-        @dataclass
-        class P:
-            x: int
-            y: int = 0
-        @dataclass
-        class Q:
-            x: int
-            y: int = field(default=0, init=False)
-        @dataclass
-        class R:
-            x: int
-            y: List[int] = field(default_factory=list)
-        q = Q(1)
-        q.y = 2
-        samples = [P(1), P(1, 2), Q(1), q, R(1), R(1, [2, 3, 4])]
-        for sample in samples:
-            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-                with self.subTest(sample=sample, proto=proto):
-                    new_sample = pickle.loads(pickle.dumps(sample, proto))
-                    self.assertEqual(sample.x, new_sample.x)
-                    self.assertEqual(sample.y, new_sample.y)
-                    self.assertIsNot(sample, new_sample)
-                    new_sample.x = 42
-                    another_new_sample = pickle.loads(pickle.dumps(new_sample, proto))
-                    self.assertEqual(new_sample.x, another_new_sample.x)
-                    self.assertEqual(sample.y, another_new_sample.y)
-
-    def test_dataclasses_qualnames(self):
-        @dataclass(order=True, unsafe_hash=True, frozen=True)
-        class A:
-            x: int
-            y: int
-
-        self.assertEqual(A.__init__.__name__, "__init__")
-        for function in (
-            '__eq__',
-            '__lt__',
-            '__le__',
-            '__gt__',
-            '__ge__',
-            '__hash__',
-            '__init__',
-            '__repr__',
-            '__setattr__',
-            '__delattr__',
-        ):
-            self.assertEqual(getattr(A, function).__qualname__, f"TestCase.test_dataclasses_qualnames.<locals>.A.{function}")
-
-        with self.assertRaisesRegex(TypeError, r"A\.__init__\(\) missing"):
-            A()
-
-
-class TestFieldNoAnnotation(unittest.TestCase):
-    def test_field_without_annotation(self):
-        with self.assertRaisesRegex(TypeError,
-                                    "'f' is a field but has no type annotation"):
-            @dataclass
-            class C:
-                f = field()
-
-    def test_field_without_annotation_but_annotation_in_base(self):
-        @dataclass
-        class B:
-            f: int
-
-        with self.assertRaisesRegex(TypeError,
-                                    "'f' is a field but has no type annotation"):
-            # This is still an error: make sure we don't pick up the
-            #  type annotation in the base class.
-            @dataclass
-            class C(B):
-                f = field()
-
-    def test_field_without_annotation_but_annotation_in_base_not_dataclass(self):
-        # Same test, but with the base class not a dataclass.
-        class B:
-            f: int
-
-        with self.assertRaisesRegex(TypeError,
-                                    "'f' is a field but has no type annotation"):
-            # This is still an error: make sure we don't pick up the
-            #  type annotation in the base class.
-            @dataclass
-            class C(B):
-                f = field()
-
-
-class TestDocString(unittest.TestCase):
-    def assertDocStrEqual(self, a, b):
-        # Because 3.6 and 3.7 differ in how inspect.signature work
-        #  (see bpo #32108), for the time being just compare them with
-        #  whitespace stripped.
-        self.assertEqual(a.replace(' ', ''), b.replace(' ', ''))
-
-    def test_existing_docstring_not_overridden(self):
-        @dataclass
-        class C:
-            """Lorem ipsum"""
-            x: int
-
-        self.assertEqual(C.__doc__, "Lorem ipsum")
-
-    def test_docstring_no_fields(self):
-        @dataclass
-        class C:
-            pass
-
-        self.assertDocStrEqual(C.__doc__, "C()")
-
-    def test_docstring_one_field(self):
-        @dataclass
-        class C:
-            x: int
-
-        self.assertDocStrEqual(C.__doc__, "C(x:int)")
-
-    def test_docstring_two_fields(self):
-        @dataclass
-        class C:
-            x: int
-            y: int
-
-        self.assertDocStrEqual(C.__doc__, "C(x:int, y:int)")
-
-    def test_docstring_three_fields(self):
-        @dataclass
-        class C:
-            x: int
-            y: int
-            z: str
-
-        self.assertDocStrEqual(C.__doc__, "C(x:int, y:int, z:str)")
-
-    def test_docstring_one_field_with_default(self):
-        @dataclass
-        class C:
-            x: int = 3
-
-        self.assertDocStrEqual(C.__doc__, "C(x:int=3)")
-
-    def test_docstring_one_field_with_default_none(self):
-        @dataclass
-        class C:
-            x: Union[int, type(None)] = None
-
-        self.assertDocStrEqual(C.__doc__, "C(x:Optional[int]=None)")
-
-    def test_docstring_list_field(self):
-        @dataclass
-        class C:
-            x: List[int]
-
-        self.assertDocStrEqual(C.__doc__, "C(x:List[int])")
-
-    def test_docstring_list_field_with_default_factory(self):
-        @dataclass
-        class C:
-            x: List[int] = field(default_factory=list)
-
-        self.assertDocStrEqual(C.__doc__, "C(x:List[int]=<factory>)")
-
-    def test_docstring_deque_field(self):
-        @dataclass
-        class C:
-            x: deque
-
-        self.assertDocStrEqual(C.__doc__, "C(x:collections.deque)")
-
-    def test_docstring_deque_field_with_default_factory(self):
-        @dataclass
-        class C:
-            x: deque = field(default_factory=deque)
-
-        self.assertDocStrEqual(C.__doc__, "C(x:collections.deque=<factory>)")
-
-    def test_docstring_with_no_signature(self):
-        # See https://github.com/python/cpython/issues/103449
-        class Meta(type):
-            __call__ = dict
-        class Base(metaclass=Meta):
-            pass
-
-        @dataclass
-        class C(Base):
-            pass
-
-        self.assertDocStrEqual(C.__doc__, "C")
-
-
-class TestInit(unittest.TestCase):
-    def test_base_has_init(self):
-        class B:
-            def __init__(self):
-                self.z = 100
-
-        # Make sure that declaring this class doesn't raise an error.
-        #  The issue is that we can't override __init__ in our class,
-        #  but it should be okay to add __init__ to us if our base has
-        #  an __init__.
-        @dataclass
-        class C(B):
-            x: int = 0
-        c = C(10)
-        self.assertEqual(c.x, 10)
-        self.assertNotIn('z', vars(c))
-
-        # Make sure that if we don't add an init, the base __init__
-        #  gets called.
-        @dataclass(init=False)
-        class C(B):
-            x: int = 10
-        c = C()
-        self.assertEqual(c.x, 10)
-        self.assertEqual(c.z, 100)
-
-    def test_no_init(self):
-        @dataclass(init=False)
-        class C:
-            i: int = 0
-        self.assertEqual(C().i, 0)
-
-        @dataclass(init=False)
-        class C:
-            i: int = 2
-            def __init__(self):
-                self.i = 3
-        self.assertEqual(C().i, 3)
-
-    def test_overwriting_init(self):
-        # If the class has __init__, use it no matter the value of
-        #  init=.
-
-        @dataclass
-        class C:
-            x: int
-            def __init__(self, x):
-                self.x = 2 * x
-        self.assertEqual(C(3).x, 6)
-
-        @dataclass(init=True)
-        class C:
-            x: int
-            def __init__(self, x):
-                self.x = 2 * x
-        self.assertEqual(C(4).x, 8)
-
-        @dataclass(init=False)
-        class C:
-            x: int
-            def __init__(self, x):
-                self.x = 2 * x
-        self.assertEqual(C(5).x, 10)
-
-    def test_inherit_from_protocol(self):
-        # Dataclasses inheriting from protocol should preserve their own `__init__`.
-        # See bpo-45081.
-
-        class P(Protocol):
-            a: int
-
-        @dataclass
-        class C(P):
-            a: int
-
-        self.assertEqual(C(5).a, 5)
-
-        @dataclass
-        class D(P):
-            def __init__(self, a):
-                self.a = a * 2
-
-        self.assertEqual(D(5).a, 10)
-
-
-class TestRepr(unittest.TestCase):
-    def test_repr(self):
-        @dataclass
-        class B:
-            x: int
-
-        @dataclass
-        class C(B):
-            y: int = 10
-
-        o = C(4)
-        self.assertEqual(repr(o), 'TestRepr.test_repr.<locals>.C(x=4, y=10)')
-
-        @dataclass
-        class D(C):
-            x: int = 20
-        self.assertEqual(repr(D()), 'TestRepr.test_repr.<locals>.D(x=20, y=10)')
-
-        @dataclass
-        class C:
-            @dataclass
-            class D:
-                i: int
-            @dataclass
-            class E:
-                pass
-        self.assertEqual(repr(C.D(0)), 'TestRepr.test_repr.<locals>.C.D(i=0)')
-        self.assertEqual(repr(C.E()), 'TestRepr.test_repr.<locals>.C.E()')
-
-    def test_no_repr(self):
-        # Test a class with no __repr__ and repr=False.
-        @dataclass(repr=False)
-        class C:
-            x: int
-        self.assertIn(f'{__name__}.TestRepr.test_no_repr.<locals>.C object at',
-                      repr(C(3)))
-
-        # Test a class with a __repr__ and repr=False.
-        @dataclass(repr=False)
-        class C:
-            x: int
-            def __repr__(self):
-                return 'C-class'
-        self.assertEqual(repr(C(3)), 'C-class')
-
-    def test_overwriting_repr(self):
-        # If the class has __repr__, use it no matter the value of
-        #  repr=.
-
-        @dataclass
-        class C:
-            x: int
-            def __repr__(self):
-                return 'x'
-        self.assertEqual(repr(C(0)), 'x')
-
-        @dataclass(repr=True)
-        class C:
-            x: int
-            def __repr__(self):
-                return 'x'
-        self.assertEqual(repr(C(0)), 'x')
-
-        @dataclass(repr=False)
-        class C:
-            x: int
-            def __repr__(self):
-                return 'x'
-        self.assertEqual(repr(C(0)), 'x')
-
-
-class TestEq(unittest.TestCase):
-    def test_no_eq(self):
-        # Test a class with no __eq__ and eq=False.
-        @dataclass(eq=False)
-        class C:
-            x: int
-        self.assertNotEqual(C(0), C(0))
-        c = C(3)
-        self.assertEqual(c, c)
-
-        # Test a class with an __eq__ and eq=False.
-        @dataclass(eq=False)
-        class C:
-            x: int
-            def __eq__(self, other):
-                return other == 10
-        self.assertEqual(C(3), 10)
-
-    def test_overwriting_eq(self):
-        # If the class has __eq__, use it no matter the value of
-        #  eq=.
-
-        @dataclass
-        class C:
-            x: int
-            def __eq__(self, other):
-                return other == 3
-        self.assertEqual(C(1), 3)
-        self.assertNotEqual(C(1), 1)
-
-        @dataclass(eq=True)
-        class C:
-            x: int
-            def __eq__(self, other):
-                return other == 4
-        self.assertEqual(C(1), 4)
-        self.assertNotEqual(C(1), 1)
-
-        @dataclass(eq=False)
-        class C:
-            x: int
-            def __eq__(self, other):
-                return other == 5
-        self.assertEqual(C(1), 5)
-        self.assertNotEqual(C(1), 1)
-
-
-class TestOrdering(unittest.TestCase):
-    def test_functools_total_ordering(self):
-        # Test that functools.total_ordering works with this class.
-        @total_ordering
-        @dataclass
-        class C:
-            x: int
-            def __lt__(self, other):
-                # Perform the test "backward", just to make
-                #  sure this is being called.
-                return self.x >= other
-
-        self.assertLess(C(0), -1)
-        self.assertLessEqual(C(0), -1)
-        self.assertGreater(C(0), 1)
-        self.assertGreaterEqual(C(0), 1)
-
-    def test_no_order(self):
-        # Test that no ordering functions are added by default.
-        @dataclass(order=False)
-        class C:
-            x: int
-        # Make sure no order methods are added.
-        self.assertNotIn('__le__', C.__dict__)
-        self.assertNotIn('__lt__', C.__dict__)
-        self.assertNotIn('__ge__', C.__dict__)
-        self.assertNotIn('__gt__', C.__dict__)
-
-        # Test that __lt__ is still called
-        @dataclass(order=False)
-        class C:
-            x: int
-            def __lt__(self, other):
-                return False
-        # Make sure other methods aren't added.
-        self.assertNotIn('__le__', C.__dict__)
-        self.assertNotIn('__ge__', C.__dict__)
-        self.assertNotIn('__gt__', C.__dict__)
-
-    def test_overwriting_order(self):
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __lt__'
-                                    '.*using functools.total_ordering'):
-            @dataclass(order=True)
-            class C:
-                x: int
-                def __lt__(self):
-                    pass
-
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __le__'
-                                    '.*using functools.total_ordering'):
-            @dataclass(order=True)
-            class C:
-                x: int
-                def __le__(self):
-                    pass
-
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __gt__'
-                                    '.*using functools.total_ordering'):
-            @dataclass(order=True)
-            class C:
-                x: int
-                def __gt__(self):
-                    pass
-
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __ge__'
-                                    '.*using functools.total_ordering'):
-            @dataclass(order=True)
-            class C:
-                x: int
-                def __ge__(self):
-                    pass
-
-class TestHash(unittest.TestCase):
-    def test_unsafe_hash(self):
-        @dataclass(unsafe_hash=True)
-        class C:
-            x: int
-            y: str
-        self.assertEqual(hash(C(1, 'foo')), hash((1, 'foo')))
-
-    def test_hash_rules(self):
-        def non_bool(value):
-            # Map to something else that's True, but not a bool.
-            if value is None:
-                return None
-            if value:
-                return (3,)
-            return 0
-
-        def test(case, unsafe_hash, eq, frozen, with_hash, result):
-            with self.subTest(case=case, unsafe_hash=unsafe_hash, eq=eq,
-                              frozen=frozen):
-                if result != 'exception':
-                    if with_hash:
-                        @dataclass(unsafe_hash=unsafe_hash, eq=eq, frozen=frozen)
-                        class C:
-                            def __hash__(self):
-                                return 0
-                    else:
-                        @dataclass(unsafe_hash=unsafe_hash, eq=eq, frozen=frozen)
-                        class C:
-                            pass
-
-                # See if the result matches what's expected.
-                if result == 'fn':
-                    # __hash__ contains the function we generated.
-                    self.assertIn('__hash__', C.__dict__)
-                    self.assertIsNotNone(C.__dict__['__hash__'])
-
-                elif result == '':
-                    # __hash__ is not present in our class.
-                    if not with_hash:
-                        self.assertNotIn('__hash__', C.__dict__)
-
-                elif result == 'none':
-                    # __hash__ is set to None.
-                    self.assertIn('__hash__', C.__dict__)
-                    self.assertIsNone(C.__dict__['__hash__'])
-
-                elif result == 'exception':
-                    # Creating the class should cause an exception.
-                    #  This only happens with with_hash==True.
-                    assert(with_hash)
-                    with self.assertRaisesRegex(TypeError, 'Cannot overwrite attribute __hash__'):
-                        @dataclass(unsafe_hash=unsafe_hash, eq=eq, frozen=frozen)
-                        class C:
-                            def __hash__(self):
-                                return 0
-
-                else:
-                    assert False, f'unknown result {result!r}'
-
-        # There are 8 cases of:
-        #  unsafe_hash=True/False
-        #  eq=True/False
-        #  frozen=True/False
-        # And for each of these, a different result if
-        #  __hash__ is defined or not.
-        for case, (unsafe_hash,  eq,    frozen, res_no_defined_hash, res_defined_hash) in enumerate([
-                  (False,        False, False,  '',                  ''),
-                  (False,        False, True,   '',                  ''),
-                  (False,        True,  False,  'none',              ''),
-                  (False,        True,  True,   'fn',                ''),
-                  (True,         False, False,  'fn',                'exception'),
-                  (True,         False, True,   'fn',                'exception'),
-                  (True,         True,  False,  'fn',                'exception'),
-                  (True,         True,  True,   'fn',                'exception'),
-                  ], 1):
-            test(case, unsafe_hash, eq, frozen, False, res_no_defined_hash)
-            test(case, unsafe_hash, eq, frozen, True,  res_defined_hash)
-
-            # Test non-bool truth values, too.  This is just to
-            #  make sure the data-driven table in the decorator
-            #  handles non-bool values.
-            test(case, non_bool(unsafe_hash), non_bool(eq), non_bool(frozen), False, res_no_defined_hash)
-            test(case, non_bool(unsafe_hash), non_bool(eq), non_bool(frozen), True,  res_defined_hash)
-
-
-    def test_eq_only(self):
-        # If a class defines __eq__, __hash__ is automatically added
-        #  and set to None.  This is normal Python behavior, not
-        #  related to dataclasses.  Make sure we don't interfere with
-        #  that (see bpo=32546).
-
-        @dataclass
-        class C:
-            i: int
-            def __eq__(self, other):
-                return self.i == other.i
-        self.assertEqual(C(1), C(1))
-        self.assertNotEqual(C(1), C(4))
-
-        # And make sure things work in this case if we specify
-        #  unsafe_hash=True.
-        @dataclass(unsafe_hash=True)
-        class C:
-            i: int
-            def __eq__(self, other):
-                return self.i == other.i
-        self.assertEqual(C(1), C(1.0))
-        self.assertEqual(hash(C(1)), hash(C(1.0)))
-
-        # And check that the classes __eq__ is being used, despite
-        #  specifying eq=True.
-        @dataclass(unsafe_hash=True, eq=True)
-        class C:
-            i: int
-            def __eq__(self, other):
-                return self.i == 3 and self.i == other.i
-        self.assertEqual(C(3), C(3))
-        self.assertNotEqual(C(1), C(1))
-        self.assertEqual(hash(C(1)), hash(C(1.0)))
-
-    def test_0_field_hash(self):
-        @dataclass(frozen=True)
-        class C:
-            pass
-        self.assertEqual(hash(C()), hash(()))
-
-        @dataclass(unsafe_hash=True)
-        class C:
-            pass
-        self.assertEqual(hash(C()), hash(()))
-
-    def test_1_field_hash(self):
-        @dataclass(frozen=True)
-        class C:
-            x: int
-        self.assertEqual(hash(C(4)), hash((4,)))
-        self.assertEqual(hash(C(42)), hash((42,)))
-
-        @dataclass(unsafe_hash=True)
-        class C:
-            x: int
-        self.assertEqual(hash(C(4)), hash((4,)))
-        self.assertEqual(hash(C(42)), hash((42,)))
-
-    def test_hash_no_args(self):
-        # Test dataclasses with no hash= argument.  This exists to
-        #  make sure that if the @dataclass parameter name is changed
-        #  or the non-default hashing behavior changes, the default
-        #  hashability keeps working the same way.
-
-        class Base:
-            def __hash__(self):
-                return 301
-
-        # If frozen or eq is None, then use the default value (do not
-        #  specify any value in the decorator).
-        for frozen, eq,    base,   expected       in [
-            (None,  None,  object, 'unhashable'),
-            (None,  None,  Base,   'unhashable'),
-            (None,  False, object, 'object'),
-            (None,  False, Base,   'base'),
-            (None,  True,  object, 'unhashable'),
-            (None,  True,  Base,   'unhashable'),
-            (False, None,  object, 'unhashable'),
-            (False, None,  Base,   'unhashable'),
-            (False, False, object, 'object'),
-            (False, False, Base,   'base'),
-            (False, True,  object, 'unhashable'),
-            (False, True,  Base,   'unhashable'),
-            (True,  None,  object, 'tuple'),
-            (True,  None,  Base,   'tuple'),
-            (True,  False, object, 'object'),
-            (True,  False, Base,   'base'),
-            (True,  True,  object, 'tuple'),
-            (True,  True,  Base,   'tuple'),
-            ]:
-
-            with self.subTest(frozen=frozen, eq=eq, base=base, expected=expected):
-                # First, create the class.
-                if frozen is None and eq is None:
-                    @dataclass
-                    class C(base):
-                        i: int
-                elif frozen is None:
-                    @dataclass(eq=eq)
-                    class C(base):
-                        i: int
-                elif eq is None:
-                    @dataclass(frozen=frozen)
-                    class C(base):
-                        i: int
-                else:
-                    @dataclass(frozen=frozen, eq=eq)
-                    class C(base):
-                        i: int
-
-                # Now, make sure it hashes as expected.
-                if expected == 'unhashable':
-                    c = C(10)
-                    with self.assertRaisesRegex(TypeError, 'unhashable type'):
-                        hash(c)
-
-                elif expected == 'base':
-                    self.assertEqual(hash(C(10)), 301)
-
-                elif expected == 'object':
-                    # I'm not sure what test to use here.  object's
-                    #  hash isn't based on id(), so calling hash()
-                    #  won't tell us much.  So, just check the
-                    #  function used is object's.
-                    self.assertIs(C.__hash__, object.__hash__)
-
-                elif expected == 'tuple':
-                    self.assertEqual(hash(C(42)), hash((42,)))
-
-                else:
-                    assert False, f'unknown value for expected={expected!r}'
-
-
-class TestFrozen(unittest.TestCase):
-    def test_frozen(self):
-        @dataclass(frozen=True)
-        class C:
-            i: int
-
-        c = C(10)
-        self.assertEqual(c.i, 10)
-        with self.assertRaises(FrozenInstanceError):
-            c.i = 5
-        self.assertEqual(c.i, 10)
-
-    def test_frozen_empty(self):
-        @dataclass(frozen=True)
-        class C:
-            pass
-
-        c = C()
-        self.assertFalse(hasattr(c, 'i'))
-        with self.assertRaises(FrozenInstanceError):
-            c.i = 5
-        self.assertFalse(hasattr(c, 'i'))
-        with self.assertRaises(FrozenInstanceError):
-            del c.i
-
-    def test_inherit(self):
-        @dataclass(frozen=True)
-        class C:
-            i: int
-
-        @dataclass(frozen=True)
-        class D(C):
-            j: int
-
-        d = D(0, 10)
-        with self.assertRaises(FrozenInstanceError):
-            d.i = 5
-        with self.assertRaises(FrozenInstanceError):
-            d.j = 6
-        self.assertEqual(d.i, 0)
-        self.assertEqual(d.j, 10)
-
-    def test_inherit_nonfrozen_from_empty_frozen(self):
-        @dataclass(frozen=True)
-        class C:
-            pass
-
-        with self.assertRaisesRegex(TypeError,
-                                    'cannot inherit non-frozen dataclass from a frozen one'):
-            @dataclass
-            class D(C):
-                j: int
-
-    def test_inherit_nonfrozen_from_empty(self):
-        @dataclass
-        class C:
-            pass
-
-        @dataclass
-        class D(C):
-            j: int
-
-        d = D(3)
-        self.assertEqual(d.j, 3)
-        self.assertIsInstance(d, C)
-
-    # Test both ways: with an intermediate normal (non-dataclass)
-    #  class and without an intermediate class.
-    def test_inherit_nonfrozen_from_frozen(self):
-        for intermediate_class in [True, False]:
-            with self.subTest(intermediate_class=intermediate_class):
-                @dataclass(frozen=True)
-                class C:
-                    i: int
-
-                if intermediate_class:
-                    class I(C): pass
-                else:
-                    I = C
-
-                with self.assertRaisesRegex(TypeError,
-                                            'cannot inherit non-frozen dataclass from a frozen one'):
-                    @dataclass
-                    class D(I):
-                        pass
-
-    def test_inherit_frozen_from_nonfrozen(self):
-        for intermediate_class in [True, False]:
-            with self.subTest(intermediate_class=intermediate_class):
-                @dataclass
-                class C:
-                    i: int
-
-                if intermediate_class:
-                    class I(C): pass
-                else:
-                    I = C
-
-                with self.assertRaisesRegex(TypeError,
-                                            'cannot inherit frozen dataclass from a non-frozen one'):
-                    @dataclass(frozen=True)
-                    class D(I):
-                        pass
-
-    def test_inherit_from_normal_class(self):
-        for intermediate_class in [True, False]:
-            with self.subTest(intermediate_class=intermediate_class):
-                class C:
-                    pass
-
-                if intermediate_class:
-                    class I(C): pass
-                else:
-                    I = C
-
-                @dataclass(frozen=True)
-                class D(I):
-                    i: int
-
-            d = D(10)
-            with self.assertRaises(FrozenInstanceError):
-                d.i = 5
-
-    def test_non_frozen_normal_derived(self):
-        # See bpo-32953.
-
-        @dataclass(frozen=True)
-        class D:
-            x: int
-            y: int = 10
-
-        class S(D):
-            pass
-
-        s = S(3)
-        self.assertEqual(s.x, 3)
-        self.assertEqual(s.y, 10)
-        s.cached = True
-
-        # But can't change the frozen attributes.
-        with self.assertRaises(FrozenInstanceError):
-            s.x = 5
-        with self.assertRaises(FrozenInstanceError):
-            s.y = 5
-        self.assertEqual(s.x, 3)
-        self.assertEqual(s.y, 10)
-        self.assertEqual(s.cached, True)
-
-        with self.assertRaises(FrozenInstanceError):
-            del s.x
-        self.assertEqual(s.x, 3)
-        with self.assertRaises(FrozenInstanceError):
-            del s.y
-        self.assertEqual(s.y, 10)
-        del s.cached
-        self.assertFalse(hasattr(s, 'cached'))
-        with self.assertRaises(AttributeError) as cm:
-            del s.cached
-        self.assertNotIsInstance(cm.exception, FrozenInstanceError)
-
-    def test_non_frozen_normal_derived_from_empty_frozen(self):
-        @dataclass(frozen=True)
-        class D:
-            pass
-
-        class S(D):
-            pass
-
-        s = S()
-        self.assertFalse(hasattr(s, 'x'))
-        s.x = 5
-        self.assertEqual(s.x, 5)
-
-        del s.x
-        self.assertFalse(hasattr(s, 'x'))
-        with self.assertRaises(AttributeError) as cm:
-            del s.x
-        self.assertNotIsInstance(cm.exception, FrozenInstanceError)
-
-    def test_overwriting_frozen(self):
-        # frozen uses __setattr__ and __delattr__.
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __setattr__'):
-            @dataclass(frozen=True)
-            class C:
-                x: int
-                def __setattr__(self):
-                    pass
-
-        with self.assertRaisesRegex(TypeError,
-                                    'Cannot overwrite attribute __delattr__'):
-            @dataclass(frozen=True)
-            class C:
-                x: int
-                def __delattr__(self):
-                    pass
-
-        @dataclass(frozen=False)
-        class C:
-            x: int
-            def __setattr__(self, name, value):
-                self.__dict__['x'] = value * 2
-        self.assertEqual(C(10).x, 20)
-
-    def test_frozen_hash(self):
-        @dataclass(frozen=True)
-        class C:
-            x: Any
-
-        # If x is immutable, we can compute the hash.  No exception is
-        # raised.
-        hash(C(3))
-
-        # If x is mutable, computing the hash is an error.
-        with self.assertRaisesRegex(TypeError, 'unhashable type'):
-            hash(C({}))
-
-
-class TestSlots(unittest.TestCase):
-    def test_simple(self):
-        @dataclass
-        class C:
-            __slots__ = ('x',)
-            x: Any
-
-        # There was a bug where a variable in a slot was assumed to
-        #  also have a default value (of type
-        #  types.MemberDescriptorType).
-        with self.assertRaisesRegex(TypeError,
-                                    r"__init__\(\) missing 1 required positional argument: 'x'"):
-            C()
-
-        # We can create an instance, and assign to x.
-        c = C(10)
-        self.assertEqual(c.x, 10)
-        c.x = 5
-        self.assertEqual(c.x, 5)
-
-        # We can't assign to anything else.
-        with self.assertRaisesRegex(AttributeError, "'C' object has no attribute 'y'"):
-            c.y = 5
-
-    def test_derived_added_field(self):
-        # See bpo-33100.
-        @dataclass
-        class Base:
-            __slots__ = ('x',)
-            x: Any
-
-        @dataclass
-        class Derived(Base):
-            x: int
-            y: int
-
-        d = Derived(1, 2)
-        self.assertEqual((d.x, d.y), (1, 2))
-
-        # We can add a new field to the derived instance.
-        d.z = 10
-
-    def test_generated_slots(self):
-        @dataclass(slots=True)
-        class C:
-            x: int
-            y: int
-
-        c = C(1, 2)
-        self.assertEqual((c.x, c.y), (1, 2))
-
-        c.x = 3
-        c.y = 4
-        self.assertEqual((c.x, c.y), (3, 4))
-
-        with self.assertRaisesRegex(AttributeError, "'C' object has no attribute 'z'"):
-            c.z = 5
-
-    def test_add_slots_when_slots_exists(self):
-        with self.assertRaisesRegex(TypeError, '^C already specifies __slots__$'):
-            @dataclass(slots=True)
-            class C:
-                __slots__ = ('x',)
-                x: int
-
-    def test_generated_slots_value(self):
-
-        class Root:
-            __slots__ = {'x'}
-
-        class Root2(Root):
-            __slots__ = {'k': '...', 'j': ''}
-
-        class Root3(Root2):
-            __slots__ = ['h']
-
-        class Root4(Root3):
-            __slots__ = 'aa'
-
-        @dataclass(slots=True)
-        class Base(Root4):
-            y: int
-            j: str
-            h: str
-
-        self.assertEqual(Base.__slots__, ('y', ))
-
-        @dataclass(slots=True)
-        class Derived(Base):
-            aa: float
-            x: str
-            z: int
-            k: str
-            h: str
-
-        self.assertEqual(Derived.__slots__, ('z', ))
-
-        @dataclass
-        class AnotherDerived(Base):
-            z: int
-
-        self.assertNotIn('__slots__', AnotherDerived.__dict__)
-
-    def test_cant_inherit_from_iterator_slots(self):
-
-        class Root:
-            __slots__ = iter(['a'])
-
-        class Root2(Root):
-            __slots__ = ('b', )
-
-        with self.assertRaisesRegex(
-           TypeError,
-            "^Slots of 'Root' cannot be determined"
-        ):
-            @dataclass(slots=True)
-            class C(Root2):
-                x: int
-
-    def test_returns_new_class(self):
-        class A:
-            x: int
-
-        B = dataclass(A, slots=True)
-        self.assertIsNot(A, B)
-
-        self.assertFalse(hasattr(A, "__slots__"))
-        self.assertTrue(hasattr(B, "__slots__"))
-
-    # Can't be local to test_frozen_pickle.
-    @dataclass(frozen=True, slots=True)
-    class FrozenSlotsClass:
-        foo: str
-        bar: int
-
-    @dataclass(frozen=True)
-    class FrozenWithoutSlotsClass:
-        foo: str
-        bar: int
-
-    def test_frozen_pickle(self):
-        # bpo-43999
-
-        self.assertEqual(self.FrozenSlotsClass.__slots__, ("foo", "bar"))
-        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            with self.subTest(proto=proto):
-                obj = self.FrozenSlotsClass("a", 1)
-                p = pickle.loads(pickle.dumps(obj, protocol=proto))
-                self.assertIsNot(obj, p)
-                self.assertEqual(obj, p)
-
-                obj = self.FrozenWithoutSlotsClass("a", 1)
-                p = pickle.loads(pickle.dumps(obj, protocol=proto))
-                self.assertIsNot(obj, p)
-                self.assertEqual(obj, p)
-
-    @dataclass(frozen=True, slots=True)
-    class FrozenSlotsGetStateClass:
-        foo: str
-        bar: int
-
-        getstate_called: bool = field(default=False, compare=False)
-
-        def __getstate__(self):
-            object.__setattr__(self, 'getstate_called', True)
-            return [self.foo, self.bar]
-
-    @dataclass(frozen=True, slots=True)
-    class FrozenSlotsSetStateClass:
-        foo: str
-        bar: int
-
-        setstate_called: bool = field(default=False, compare=False)
-
-        def __setstate__(self, state):
-            object.__setattr__(self, 'setstate_called', True)
-            object.__setattr__(self, 'foo', state[0])
-            object.__setattr__(self, 'bar', state[1])
-
-    @dataclass(frozen=True, slots=True)
-    class FrozenSlotsAllStateClass:
-        foo: str
-        bar: int
-
-        getstate_called: bool = field(default=False, compare=False)
-        setstate_called: bool = field(default=False, compare=False)
-
-        def __getstate__(self):
-            object.__setattr__(self, 'getstate_called', True)
-            return [self.foo, self.bar]
-
-        def __setstate__(self, state):
-            object.__setattr__(self, 'setstate_called', True)
-            object.__setattr__(self, 'foo', state[0])
-            object.__setattr__(self, 'bar', state[1])
-
-    def test_frozen_slots_pickle_custom_state(self):
-        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            with self.subTest(proto=proto):
-                obj = self.FrozenSlotsGetStateClass('a', 1)
-                dumped = pickle.dumps(obj, protocol=proto)
-
-                self.assertTrue(obj.getstate_called)
-                self.assertEqual(obj, pickle.loads(dumped))
-
-        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            with self.subTest(proto=proto):
-                obj = self.FrozenSlotsSetStateClass('a', 1)
-                obj2 = pickle.loads(pickle.dumps(obj, protocol=proto))
-
-                self.assertTrue(obj2.setstate_called)
-                self.assertEqual(obj, obj2)
-
-        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            with self.subTest(proto=proto):
-                obj = self.FrozenSlotsAllStateClass('a', 1)
-                dumped = pickle.dumps(obj, protocol=proto)
-
-                self.assertTrue(obj.getstate_called)
-
-                obj2 = pickle.loads(dumped)
-                self.assertTrue(obj2.setstate_called)
-                self.assertEqual(obj, obj2)
-
-    def test_slots_with_default_no_init(self):
-        # Originally reported in bpo-44649.
-        @dataclass(slots=True)
-        class A:
-            a: str
-            b: str = field(default='b', init=False)
-
-        obj = A("a")
-        self.assertEqual(obj.a, 'a')
-        self.assertEqual(obj.b, 'b')
-
-    def test_slots_with_default_factory_no_init(self):
-        # Originally reported in bpo-44649.
-        @dataclass(slots=True)
-        class A:
-            a: str
-            b: str = field(default_factory=lambda:'b', init=False)
-
-        obj = A("a")
-        self.assertEqual(obj.a, 'a')
-        self.assertEqual(obj.b, 'b')
-
-    def test_slots_no_weakref(self):
-        @dataclass(slots=True)
-        class A:
-            # No weakref.
-            pass
-
-        self.assertNotIn("__weakref__", A.__slots__)
-        a = A()
-        with self.assertRaisesRegex(TypeError,
-                                    "cannot create weak reference"):
-            weakref.ref(a)
-        with self.assertRaises(AttributeError):
-            a.__weakref__
-
-    def test_slots_weakref(self):
-        @dataclass(slots=True, weakref_slot=True)
-        class A:
-            a: int
-
-        self.assertIn("__weakref__", A.__slots__)
-        a = A(1)
-        a_ref = weakref.ref(a)
-
-        self.assertIs(a.__weakref__, a_ref)
-
-    def test_slots_weakref_base_str(self):
-        class Base:
-            __slots__ = '__weakref__'
-
-        @dataclass(slots=True)
-        class A(Base):
-            a: int
-
-        # __weakref__ is in the base class, not A.  But an A is still weakref-able.
-        self.assertIn("__weakref__", Base.__slots__)
-        self.assertNotIn("__weakref__", A.__slots__)
-        a = A(1)
-        weakref.ref(a)
-
-    def test_slots_weakref_base_tuple(self):
-        # Same as test_slots_weakref_base, but use a tuple instead of a string
-        # in the base class.
-        class Base:
-            __slots__ = ('__weakref__',)
-
-        @dataclass(slots=True)
-        class A(Base):
-            a: int
-
-        # __weakref__ is in the base class, not A.  But an A is still
-        # weakref-able.
-        self.assertIn("__weakref__", Base.__slots__)
-        self.assertNotIn("__weakref__", A.__slots__)
-        a = A(1)
-        weakref.ref(a)
-
-    def test_weakref_slot_without_slot(self):
-        with self.assertRaisesRegex(TypeError,
-                                    "weakref_slot is True but slots is False"):
-            @dataclass(weakref_slot=True)
-            class A:
-                a: int
-
-    def test_weakref_slot_make_dataclass(self):
-        A = make_dataclass('A', [('a', int),], slots=True, weakref_slot=True)
-        self.assertIn("__weakref__", A.__slots__)
-        a = A(1)
-        weakref.ref(a)
-
-        # And make sure if raises if slots=True is not given.
-        with self.assertRaisesRegex(TypeError,
-                                    "weakref_slot is True but slots is False"):
-            B = make_dataclass('B', [('a', int),], weakref_slot=True)
-
-    def test_weakref_slot_subclass_weakref_slot(self):
-        @dataclass(slots=True, weakref_slot=True)
-        class Base:
-            field: int
-
-        # A *can* also specify weakref_slot=True if it wants to (gh-93521)
-        @dataclass(slots=True, weakref_slot=True)
-        class A(Base):
-            ...
-
-        # __weakref__ is in the base class, not A.  But an instance of A
-        # is still weakref-able.
-        self.assertIn("__weakref__", Base.__slots__)
-        self.assertNotIn("__weakref__", A.__slots__)
-        a = A(1)
-        a_ref = weakref.ref(a)
-        self.assertIs(a.__weakref__, a_ref)
-
-    def test_weakref_slot_subclass_no_weakref_slot(self):
-        @dataclass(slots=True, weakref_slot=True)
-        class Base:
-            field: int
-
-        @dataclass(slots=True)
-        class A(Base):
-            ...
-
-        # __weakref__ is in the base class, not A.  Even though A doesn't
-        # specify weakref_slot, it should still be weakref-able.
-        self.assertIn("__weakref__", Base.__slots__)
-        self.assertNotIn("__weakref__", A.__slots__)
-        a = A(1)
-        a_ref = weakref.ref(a)
-        self.assertIs(a.__weakref__, a_ref)
-
-    def test_weakref_slot_normal_base_weakref_slot(self):
-        class Base:
-            __slots__ = ('__weakref__',)
-
-        @dataclass(slots=True, weakref_slot=True)
-        class A(Base):
-            field: int
-
-        # __weakref__ is in the base class, not A.  But an instance of
-        # A is still weakref-able.
-        self.assertIn("__weakref__", Base.__slots__)
-        self.assertNotIn("__weakref__", A.__slots__)
-        a = A(1)
-        a_ref = weakref.ref(a)
-        self.assertIs(a.__weakref__, a_ref)
-
-
-class TestDescriptors(unittest.TestCase):
-    def test_set_name(self):
-        # See bpo-33141.
-
-        # Create a descriptor.
-        class D:
-            def __set_name__(self, owner, name):
-                self.name = name + 'x'
-            def __get__(self, instance, owner):
-                if instance is not None:
-                    return 1
-                return self
-
-        # This is the case of just normal descriptor behavior, no
-        #  dataclass code is involved in initializing the descriptor.
-        @dataclass
-        class C:
-            c: int=D()
-        self.assertEqual(C.c.name, 'cx')
-
-        # Now test with a default value and init=False, which is the
-        #  only time this is really meaningful.  If not using
-        #  init=False, then the descriptor will be overwritten, anyway.
-        @dataclass
-        class C:
-            c: int=field(default=D(), init=False)
-        self.assertEqual(C.c.name, 'cx')
-        self.assertEqual(C().c, 1)
-
-    def test_non_descriptor(self):
-        # PEP 487 says __set_name__ should work on non-descriptors.
-        # Create a descriptor.
-
-        class D:
-            def __set_name__(self, owner, name):
-                self.name = name + 'x'
-
-        @dataclass
-        class C:
-            c: int=field(default=D(), init=False)
-        self.assertEqual(C.c.name, 'cx')
-
-    def test_lookup_on_instance(self):
-        # See bpo-33175.
-        class D:
-            pass
-
-        d = D()
-        # Create an attribute on the instance, not type.
-        d.__set_name__ = Mock()
-
-        # Make sure d.__set_name__ is not called.
-        @dataclass
-        class C:
-            i: int=field(default=d, init=False)
-
-        self.assertEqual(d.__set_name__.call_count, 0)
-
-    def test_lookup_on_class(self):
-        # See bpo-33175.
-        class D:
-            pass
-        D.__set_name__ = Mock()
-
-        # Make sure D.__set_name__ is called.
-        @dataclass
-        class C:
-            i: int=field(default=D(), init=False)
-
-        self.assertEqual(D.__set_name__.call_count, 1)
-
-    def test_init_calls_set(self):
-        class D:
-            pass
-
-        D.__set__ = Mock()
-
-        @dataclass
-        class C:
-            i: D = D()
-
-        # Make sure D.__set__ is called.
-        D.__set__.reset_mock()
-        c = C(5)
-        self.assertEqual(D.__set__.call_count, 1)
-
-    def test_getting_field_calls_get(self):
-        class D:
-            pass
-
-        D.__set__ = Mock()
-        D.__get__ = Mock()
-
-        @dataclass
-        class C:
-            i: D = D()
-
-        c = C(5)
-
-        # Make sure D.__get__ is called.
-        D.__get__.reset_mock()
-        value = c.i
-        self.assertEqual(D.__get__.call_count, 1)
-
-    def test_setting_field_calls_set(self):
-        class D:
-            pass
-
-        D.__set__ = Mock()
-
-        @dataclass
-        class C:
-            i: D = D()
-
-        c = C(5)
-
-        # Make sure D.__set__ is called.
-        D.__set__.reset_mock()
-        c.i = 10
-        self.assertEqual(D.__set__.call_count, 1)
-
-    def test_setting_uninitialized_descriptor_field(self):
-        class D:
-            pass
-
-        D.__set__ = Mock()
-
-        @dataclass
-        class C:
-            i: D
-
-        # D.__set__ is not called because there's no D instance to call it on
-        D.__set__.reset_mock()
-        c = C(5)
-        self.assertEqual(D.__set__.call_count, 0)
-
-        # D.__set__ still isn't called after setting i to an instance of D
-        # because descriptors don't behave like that when stored as instance vars
-        c.i = D()
-        c.i = 5
-        self.assertEqual(D.__set__.call_count, 0)
-
-    def test_default_value(self):
-        class D:
-            def __get__(self, instance: Any, owner: object) -> int:
-                if instance is None:
-                    return 100
-
-                return instance._x
-
-            def __set__(self, instance: Any, value: int) -> None:
-                instance._x = value
-
-        @dataclass
-        class C:
-            i: D = D()
-
-        c = C()
-        self.assertEqual(c.i, 100)
-
-        c = C(5)
-        self.assertEqual(c.i, 5)
-
-    def test_no_default_value(self):
-        class D:
-            def __get__(self, instance: Any, owner: object) -> int:
-                if instance is None:
-                    raise AttributeError()
-
-                return instance._x
-
-            def __set__(self, instance: Any, value: int) -> None:
-                instance._x = value
-
-        @dataclass
-        class C:
-            i: D = D()
-
-        with self.assertRaisesRegex(TypeError, 'missing 1 required positional argument'):
-            c = C()
-
-class TestStringAnnotations(unittest.TestCase):
-    def test_classvar(self):
-        # Some expressions recognized as ClassVar really aren't.  But
-        #  if you're using string annotations, it's not an exact
-        #  science.
-        # These tests assume that both "import typing" and "from
-        # typing import *" have been run in this file.
-        for typestr in ('ClassVar[int]',
-                        'ClassVar [int]',
-                        ' ClassVar [int]',
-                        'ClassVar',
-                        ' ClassVar ',
-                        'typing.ClassVar[int]',
-                        'typing.ClassVar[str]',
-                        ' typing.ClassVar[str]',
-                        'typing .ClassVar[str]',
-                        'typing. ClassVar[str]',
-                        'typing.ClassVar [str]',
-                        'typing.ClassVar [ str]',
-
-                        # Not syntactically valid, but these will
-                        #  be treated as ClassVars.
-                        'typing.ClassVar.[int]',
-                        'typing.ClassVar+',
-                        ):
-            with self.subTest(typestr=typestr):
-                @dataclass
-                class C:
-                    x: typestr
-
-                # x is a ClassVar, so C() takes no args.
-                C()
-
-                # And it won't appear in the class's dict because it doesn't
-                # have a default.
-                self.assertNotIn('x', C.__dict__)
-
-    def test_isnt_classvar(self):
-        for typestr in ('CV',
-                        't.ClassVar',
-                        't.ClassVar[int]',
-                        'typing..ClassVar[int]',
-                        'Classvar',
-                        'Classvar[int]',
-                        'typing.ClassVarx[int]',
-                        'typong.ClassVar[int]',
-                        'dataclasses.ClassVar[int]',
-                        'typingxClassVar[str]',
-                        ):
-            with self.subTest(typestr=typestr):
-                @dataclass
-                class C:
-                    x: typestr
-
-                # x is not a ClassVar, so C() takes one arg.
-                self.assertEqual(C(10).x, 10)
-
-    def test_initvar(self):
-        # These tests assume that both "import dataclasses" and "from
-        #  dataclasses import *" have been run in this file.
-        for typestr in ('InitVar[int]',
-                        'InitVar [int]'
-                        ' InitVar [int]',
-                        'InitVar',
-                        ' InitVar ',
-                        'dataclasses.InitVar[int]',
-                        'dataclasses.InitVar[str]',
-                        ' dataclasses.InitVar[str]',
-                        'dataclasses .InitVar[str]',
-                        'dataclasses. InitVar[str]',
-                        'dataclasses.InitVar [str]',
-                        'dataclasses.InitVar [ str]',
-
-                        # Not syntactically valid, but these will
-                        #  be treated as InitVars.
-                        'dataclasses.InitVar.[int]',
-                        'dataclasses.InitVar+',
-                        ):
-            with self.subTest(typestr=typestr):
-                @dataclass
-                class C:
-                    x: typestr
-
-                # x is an InitVar, so doesn't create a member.
-                with self.assertRaisesRegex(AttributeError,
-                                            "object has no attribute 'x'"):
-                    C(1).x
-
-    def test_isnt_initvar(self):
-        for typestr in ('IV',
-                        'dc.InitVar',
-                        'xdataclasses.xInitVar',
-                        'typing.xInitVar[int]',
-                        ):
-            with self.subTest(typestr=typestr):
-                @dataclass
-                class C:
-                    x: typestr
-
-                # x is not an InitVar, so there will be a member x.
-                self.assertEqual(C(10).x, 10)
-
-    def test_classvar_module_level_import(self):
-        from test import dataclass_module_1
-        from test import dataclass_module_1_str
-        from test import dataclass_module_2
-        from test import dataclass_module_2_str
-
-        for m in (dataclass_module_1, dataclass_module_1_str,
-                  dataclass_module_2, dataclass_module_2_str,
-                  ):
-            with self.subTest(m=m):
-                # There's a difference in how the ClassVars are
-                # interpreted when using string annotations or
-                # not. See the imported modules for details.
-                if m.USING_STRINGS:
-                    c = m.CV(10)
-                else:
-                    c = m.CV()
-                self.assertEqual(c.cv0, 20)
-
-
-                # There's a difference in how the InitVars are
-                # interpreted when using string annotations or
-                # not. See the imported modules for details.
-                c = m.IV(0, 1, 2, 3, 4)
-
-                for field_name in ('iv0', 'iv1', 'iv2', 'iv3'):
-                    with self.subTest(field_name=field_name):
-                        with self.assertRaisesRegex(AttributeError, f"object has no attribute '{field_name}'"):
-                            # Since field_name is an InitVar, it's
-                            # not an instance field.
-                            getattr(c, field_name)
-
-                if m.USING_STRINGS:
-                    # iv4 is interpreted as a normal field.
-                    self.assertIn('not_iv4', c.__dict__)
-                    self.assertEqual(c.not_iv4, 4)
-                else:
-                    # iv4 is interpreted as an InitVar, so it
-                    # won't exist on the instance.
-                    self.assertNotIn('not_iv4', c.__dict__)
-
-    def test_text_annotations(self):
-        from test import dataclass_textanno
-
-        self.assertEqual(
-            get_type_hints(dataclass_textanno.Bar),
-            {'foo': dataclass_textanno.Foo})
-        self.assertEqual(
-            get_type_hints(dataclass_textanno.Bar.__init__),
-            {'foo': dataclass_textanno.Foo,
-             'return': type(None)})
-
-
-ByMakeDataClass = make_dataclass('ByMakeDataClass', [('x', int)])
-ManualModuleMakeDataClass = make_dataclass('ManualModuleMakeDataClass',
-                                           [('x', int)],
-                                           module=__name__)
-WrongNameMakeDataclass = make_dataclass('Wrong', [('x', int)])
-WrongModuleMakeDataclass = make_dataclass('WrongModuleMakeDataclass',
-                                          [('x', int)],
-                                          module='custom')
-
-class TestMakeDataclass(unittest.TestCase):
-    def test_simple(self):
-        C = make_dataclass('C',
-                           [('x', int),
-                            ('y', int, field(default=5))],
-                           namespace={'add_one': lambda self: self.x + 1})
-        c = C(10)
-        self.assertEqual((c.x, c.y), (10, 5))
-        self.assertEqual(c.add_one(), 11)
-
-
-    def test_no_mutate_namespace(self):
-        # Make sure a provided namespace isn't mutated.
-        ns = {}
-        C = make_dataclass('C',
-                           [('x', int),
-                            ('y', int, field(default=5))],
-                           namespace=ns)
-        self.assertEqual(ns, {})
-
-    def test_base(self):
-        class Base1:
-            pass
-        class Base2:
-            pass
-        C = make_dataclass('C',
-                           [('x', int)],
-                           bases=(Base1, Base2))
-        c = C(2)
-        self.assertIsInstance(c, C)
-        self.assertIsInstance(c, Base1)
-        self.assertIsInstance(c, Base2)
-
-    def test_base_dataclass(self):
-        @dataclass
-        class Base1:
-            x: int
-        class Base2:
-            pass
-        C = make_dataclass('C',
-                           [('y', int)],
-                           bases=(Base1, Base2))
-        with self.assertRaisesRegex(TypeError, 'required positional'):
-            c = C(2)
-        c = C(1, 2)
-        self.assertIsInstance(c, C)
-        self.assertIsInstance(c, Base1)
-        self.assertIsInstance(c, Base2)
-
-        self.assertEqual((c.x, c.y), (1, 2))
-
-    def test_init_var(self):
-        def post_init(self, y):
-            self.x *= y
-
-        C = make_dataclass('C',
-                           [('x', int),
-                            ('y', InitVar[int]),
-                            ],
-                           namespace={'__post_init__': post_init},
-                           )
-        c = C(2, 3)
-        self.assertEqual(vars(c), {'x': 6})
-        self.assertEqual(len(fields(c)), 1)
-
-    def test_class_var(self):
-        C = make_dataclass('C',
-                           [('x', int),
-                            ('y', ClassVar[int], 10),
-                            ('z', ClassVar[int], field(default=20)),
-                            ])
-        c = C(1)
-        self.assertEqual(vars(c), {'x': 1})
-        self.assertEqual(len(fields(c)), 1)
-        self.assertEqual(C.y, 10)
-        self.assertEqual(C.z, 20)
-
-    def test_other_params(self):
-        C = make_dataclass('C',
-                           [('x', int),
-                            ('y', ClassVar[int], 10),
-                            ('z', ClassVar[int], field(default=20)),
-                            ],
-                           init=False)
-        # Make sure we have a repr, but no init.
-        self.assertNotIn('__init__', vars(C))
-        self.assertIn('__repr__', vars(C))
-
-        # Make sure random other params don't work.
-        with self.assertRaisesRegex(TypeError, 'unexpected keyword argument'):
-            C = make_dataclass('C',
-                               [],
-                               xxinit=False)
-
-    def test_no_types(self):
-        C = make_dataclass('Point', ['x', 'y', 'z'])
-        c = C(1, 2, 3)
-        self.assertEqual(vars(c), {'x': 1, 'y': 2, 'z': 3})
-        self.assertEqual(C.__annotations__, {'x': 'typing.Any',
-                                             'y': 'typing.Any',
-                                             'z': 'typing.Any'})
-
-        C = make_dataclass('Point', ['x', ('y', int), 'z'])
-        c = C(1, 2, 3)
-        self.assertEqual(vars(c), {'x': 1, 'y': 2, 'z': 3})
-        self.assertEqual(C.__annotations__, {'x': 'typing.Any',
-                                             'y': int,
-                                             'z': 'typing.Any'})
-
-    def test_module_attr(self):
-        self.assertEqual(ByMakeDataClass.__module__, __name__)
-        self.assertEqual(ByMakeDataClass(1).__module__, __name__)
-        self.assertEqual(WrongModuleMakeDataclass.__module__, "custom")
-        Nested = make_dataclass('Nested', [])
-        self.assertEqual(Nested.__module__, __name__)
-        self.assertEqual(Nested().__module__, __name__)
-
-    def test_pickle_support(self):
-        for klass in [ByMakeDataClass, ManualModuleMakeDataClass]:
-            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-                with self.subTest(proto=proto):
-                    self.assertEqual(
-                        pickle.loads(pickle.dumps(klass, proto)),
-                        klass,
-                    )
-                    self.assertEqual(
-                        pickle.loads(pickle.dumps(klass(1), proto)),
-                        klass(1),
-                    )
-
-    def test_cannot_be_pickled(self):
-        for klass in [WrongNameMakeDataclass, WrongModuleMakeDataclass]:
-            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-                with self.subTest(proto=proto):
-                    with self.assertRaises(pickle.PickleError):
-                        pickle.dumps(klass, proto)
-                    with self.assertRaises(pickle.PickleError):
-                        pickle.dumps(klass(1), proto)
-
-    def test_invalid_type_specification(self):
-        for bad_field in [(),
-                          (1, 2, 3, 4),
-                          ]:
-            with self.subTest(bad_field=bad_field):
-                with self.assertRaisesRegex(TypeError, r'Invalid field: '):
-                    make_dataclass('C', ['a', bad_field])
-
-        # And test for things with no len().
-        for bad_field in [float,
-                          lambda x:x,
-                          ]:
-            with self.subTest(bad_field=bad_field):
-                with self.assertRaisesRegex(TypeError, r'has no len\(\)'):
-                    make_dataclass('C', ['a', bad_field])
-
-    def test_duplicate_field_names(self):
-        for field in ['a', 'ab']:
-            with self.subTest(field=field):
-                with self.assertRaisesRegex(TypeError, 'Field name duplicated'):
-                    make_dataclass('C', [field, 'a', field])
-
-    def test_keyword_field_names(self):
-        for field in ['for', 'async', 'await', 'as']:
-            with self.subTest(field=field):
-                with self.assertRaisesRegex(TypeError, 'must not be keywords'):
-                    make_dataclass('C', ['a', field])
-                with self.assertRaisesRegex(TypeError, 'must not be keywords'):
-                    make_dataclass('C', [field])
-                with self.assertRaisesRegex(TypeError, 'must not be keywords'):
-                    make_dataclass('C', [field, 'a'])
-
-    def test_non_identifier_field_names(self):
-        for field in ['()', 'x,y', '*', '2@3', '', 'little johnny tables']:
-            with self.subTest(field=field):
-                with self.assertRaisesRegex(TypeError, 'must be valid identifiers'):
-                    make_dataclass('C', ['a', field])
-                with self.assertRaisesRegex(TypeError, 'must be valid identifiers'):
-                    make_dataclass('C', [field])
-                with self.assertRaisesRegex(TypeError, 'must be valid identifiers'):
-                    make_dataclass('C', [field, 'a'])
-
-    def test_underscore_field_names(self):
-        # Unlike namedtuple, it's okay if dataclass field names have
-        # an underscore.
-        make_dataclass('C', ['_', '_a', 'a_a', 'a_'])
-
-    def test_funny_class_names_names(self):
-        # No reason to prevent weird class names, since
-        # types.new_class allows them.
-        for classname in ['()', 'x,y', '*', '2@3', '']:
-            with self.subTest(classname=classname):
-                C = make_dataclass(classname, ['a', 'b'])
-                self.assertEqual(C.__name__, classname)
-
-class TestReplace(unittest.TestCase):
-    def test(self):
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            y: int
-
-        c = C(1, 2)
-        c1 = replace(c, x=3)
-        self.assertEqual(c1.x, 3)
-        self.assertEqual(c1.y, 2)
-
-    def test_frozen(self):
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            y: int
-            z: int = field(init=False, default=10)
-            t: int = field(init=False, default=100)
-
-        c = C(1, 2)
-        c1 = replace(c, x=3)
-        self.assertEqual((c.x, c.y, c.z, c.t), (1, 2, 10, 100))
-        self.assertEqual((c1.x, c1.y, c1.z, c1.t), (3, 2, 10, 100))
-
-
-        with self.assertRaisesRegex(ValueError, 'init=False'):
-            replace(c, x=3, z=20, t=50)
-        with self.assertRaisesRegex(ValueError, 'init=False'):
-            replace(c, z=20)
-            replace(c, x=3, z=20, t=50)
-
-        # Make sure the result is still frozen.
-        with self.assertRaisesRegex(FrozenInstanceError, "cannot assign to field 'x'"):
-            c1.x = 3
-
-        # Make sure we can't replace an attribute that doesn't exist,
-        #  if we're also replacing one that does exist.  Test this
-        #  here, because setting attributes on frozen instances is
-        #  handled slightly differently from non-frozen ones.
-        with self.assertRaisesRegex(TypeError, r"__init__\(\) got an unexpected "
-                                             "keyword argument 'a'"):
-            c1 = replace(c, x=20, a=5)
-
-    def test_invalid_field_name(self):
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            y: int
-
-        c = C(1, 2)
-        with self.assertRaisesRegex(TypeError, r"__init__\(\) got an unexpected "
-                                    "keyword argument 'z'"):
-            c1 = replace(c, z=3)
-
-    def test_invalid_object(self):
-        @dataclass(frozen=True)
-        class C:
-            x: int
-            y: int
-
-        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
-            replace(C, x=3)
-
-        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
-            replace(0, x=3)
-
-    def test_no_init(self):
-        @dataclass
-        class C:
-            x: int
-            y: int = field(init=False, default=10)
-
-        c = C(1)
-        c.y = 20
-
-        # Make sure y gets the default value.
-        c1 = replace(c, x=5)
-        self.assertEqual((c1.x, c1.y), (5, 10))
-
-        # Trying to replace y is an error.
-        with self.assertRaisesRegex(ValueError, 'init=False'):
-            replace(c, x=2, y=30)
-
-        with self.assertRaisesRegex(ValueError, 'init=False'):
-            replace(c, y=30)
-
-    def test_classvar(self):
-        @dataclass
-        class C:
-            x: int
-            y: ClassVar[int] = 1000
-
-        c = C(1)
-        d = C(2)
-
-        self.assertIs(c.y, d.y)
-        self.assertEqual(c.y, 1000)
-
-        # Trying to replace y is an error: can't replace ClassVars.
-        with self.assertRaisesRegex(TypeError, r"__init__\(\) got an "
-                                    "unexpected keyword argument 'y'"):
-            replace(c, y=30)
-
-        replace(c, x=5)
-
-    def test_initvar_is_specified(self):
-        @dataclass
-        class C:
-            x: int
-            y: InitVar[int]
-
-            def __post_init__(self, y):
-                self.x *= y
-
-        c = C(1, 10)
-        self.assertEqual(c.x, 10)
-        with self.assertRaisesRegex(ValueError, r"InitVar 'y' must be "
-                                    "specified with replace()"):
-            replace(c, x=3)
-        c = replace(c, x=3, y=5)
-        self.assertEqual(c.x, 15)
-
-    def test_initvar_with_default_value(self):
-        @dataclass
-        class C:
-            x: int
-            y: InitVar[int] = None
-            z: InitVar[int] = 42
-
-            def __post_init__(self, y, z):
-                if y is not None:
-                    self.x += y
-                if z is not None:
-                    self.x += z
-
-        c = C(x=1, y=10, z=1)
-        self.assertEqual(replace(c), C(x=12))
-        self.assertEqual(replace(c, y=4), C(x=12, y=4, z=42))
-        self.assertEqual(replace(c, y=4, z=1), C(x=12, y=4, z=1))
-
-    def test_recursive_repr(self):
-        @dataclass
-        class C:
-            f: "C"
-
-        c = C(None)
-        c.f = c
-        self.assertEqual(repr(c), "TestReplace.test_recursive_repr.<locals>.C(f=...)")
-
-    def test_recursive_repr_two_attrs(self):
-        @dataclass
-        class C:
-            f: "C"
-            g: "C"
-
-        c = C(None, None)
-        c.f = c
-        c.g = c
-        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_two_attrs"
-                                  ".<locals>.C(f=..., g=...)")
-
-    def test_recursive_repr_indirection(self):
-        @dataclass
-        class C:
-            f: "D"
-
-        @dataclass
-        class D:
-            f: "C"
-
-        c = C(None)
-        d = D(None)
-        c.f = d
-        d.f = c
-        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_indirection"
-                                  ".<locals>.C(f=TestReplace.test_recursive_repr_indirection"
-                                  ".<locals>.D(f=...))")
-
-    def test_recursive_repr_indirection_two(self):
-        @dataclass
-        class C:
-            f: "D"
-
-        @dataclass
-        class D:
-            f: "E"
-
-        @dataclass
-        class E:
-            f: "C"
-
-        c = C(None)
-        d = D(None)
-        e = E(None)
-        c.f = d
-        d.f = e
-        e.f = c
-        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_indirection_two"
-                                  ".<locals>.C(f=TestReplace.test_recursive_repr_indirection_two"
-                                  ".<locals>.D(f=TestReplace.test_recursive_repr_indirection_two"
-                                  ".<locals>.E(f=...)))")
-
-    def test_recursive_repr_misc_attrs(self):
-        @dataclass
-        class C:
-            f: "C"
-            g: int
-
-        c = C(None, 1)
-        c.f = c
-        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_misc_attrs"
-                                  ".<locals>.C(f=..., g=1)")
-
-    ## def test_initvar(self):
-    ##     @dataclass
-    ##     class C:
-    ##         x: int
-    ##         y: InitVar[int]
-
-    ##     c = C(1, 10)
-    ##     d = C(2, 20)
-
-    ##     # In our case, replacing an InitVar is a no-op
-    ##     self.assertEqual(c, replace(c, y=5))
-
-    ##     replace(c, x=5)
-
-class TestAbstract(unittest.TestCase):
-    def test_abc_implementation(self):
-        class Ordered(abc.ABC):
-            @abc.abstractmethod
-            def __lt__(self, other):
-                pass
-
-            @abc.abstractmethod
-            def __le__(self, other):
-                pass
-
-        @dataclass(order=True)
-        class Date(Ordered):
-            year: int
-            month: 'Month'
-            day: 'int'
-
-        self.assertFalse(inspect.isabstract(Date))
-        self.assertGreater(Date(2020,12,25), Date(2020,8,31))
-
-    def test_maintain_abc(self):
-        class A(abc.ABC):
-            @abc.abstractmethod
-            def foo(self):
-                pass
-
-        @dataclass
-        class Date(A):
-            year: int
-            month: 'Month'
-            day: 'int'
-
-        self.assertTrue(inspect.isabstract(Date))
-        msg = "class Date without an implementation for abstract method 'foo'"
-        self.assertRaisesRegex(TypeError, msg, Date)
-
-
-class TestMatchArgs(unittest.TestCase):
-    def test_match_args(self):
-        @dataclass
-        class C:
-            a: int
-        self.assertEqual(C(42).__match_args__, ('a',))
-
-    def test_explicit_match_args(self):
-        ma = ()
-        @dataclass
-        class C:
-            a: int
-            __match_args__ = ma
-        self.assertIs(C(42).__match_args__, ma)
-
-    def test_bpo_43764(self):
-        @dataclass(repr=False, eq=False, init=False)
-        class X:
-            a: int
-            b: int
-            c: int
-        self.assertEqual(X.__match_args__, ("a", "b", "c"))
-
-    def test_match_args_argument(self):
-        @dataclass(match_args=False)
-        class X:
-            a: int
-        self.assertNotIn('__match_args__', X.__dict__)
-
-        @dataclass(match_args=False)
-        class Y:
-            a: int
-            __match_args__ = ('b',)
-        self.assertEqual(Y.__match_args__, ('b',))
-
-        @dataclass(match_args=False)
-        class Z(Y):
-            z: int
-        self.assertEqual(Z.__match_args__, ('b',))
-
-        # Ensure parent dataclass __match_args__ is seen, if child class
-        # specifies match_args=False.
-        @dataclass
-        class A:
-            a: int
-            z: int
-        @dataclass(match_args=False)
-        class B(A):
-            b: int
-        self.assertEqual(B.__match_args__, ('a', 'z'))
-
-    def test_make_dataclasses(self):
-        C = make_dataclass('C', [('x', int), ('y', int)])
-        self.assertEqual(C.__match_args__, ('x', 'y'))
-
-        C = make_dataclass('C', [('x', int), ('y', int)], match_args=True)
-        self.assertEqual(C.__match_args__, ('x', 'y'))
-
-        C = make_dataclass('C', [('x', int), ('y', int)], match_args=False)
-        self.assertNotIn('__match__args__', C.__dict__)
-
-        C = make_dataclass('C', [('x', int), ('y', int)], namespace={'__match_args__': ('z',)})
-        self.assertEqual(C.__match_args__, ('z',))
-
-
-class TestKeywordArgs(unittest.TestCase):
-    def test_no_classvar_kwarg(self):
-        msg = 'field a is a ClassVar but specifies kw_only'
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass
-            class A:
-                a: ClassVar[int] = field(kw_only=True)
-
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass
-            class A:
-                a: ClassVar[int] = field(kw_only=False)
-
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass(kw_only=True)
-            class A:
-                a: ClassVar[int] = field(kw_only=False)
-
-    def test_field_marked_as_kwonly(self):
-        #######################
-        # Using dataclass(kw_only=True)
-        @dataclass(kw_only=True)
-        class A:
-            a: int
-        self.assertTrue(fields(A)[0].kw_only)
-
-        @dataclass(kw_only=True)
-        class A:
-            a: int = field(kw_only=True)
-        self.assertTrue(fields(A)[0].kw_only)
-
-        @dataclass(kw_only=True)
-        class A:
-            a: int = field(kw_only=False)
-        self.assertFalse(fields(A)[0].kw_only)
-
-        #######################
-        # Using dataclass(kw_only=False)
-        @dataclass(kw_only=False)
-        class A:
-            a: int
-        self.assertFalse(fields(A)[0].kw_only)
-
-        @dataclass(kw_only=False)
-        class A:
-            a: int = field(kw_only=True)
-        self.assertTrue(fields(A)[0].kw_only)
-
-        @dataclass(kw_only=False)
-        class A:
-            a: int = field(kw_only=False)
-        self.assertFalse(fields(A)[0].kw_only)
-
-        #######################
-        # Not specifying dataclass(kw_only)
-        @dataclass
-        class A:
-            a: int
-        self.assertFalse(fields(A)[0].kw_only)
-
-        @dataclass
-        class A:
-            a: int = field(kw_only=True)
-        self.assertTrue(fields(A)[0].kw_only)
-
-        @dataclass
-        class A:
-            a: int = field(kw_only=False)
-        self.assertFalse(fields(A)[0].kw_only)
-
-    def test_match_args(self):
-        # kw fields don't show up in __match_args__.
-        @dataclass(kw_only=True)
-        class C:
-            a: int
-        self.assertEqual(C(a=42).__match_args__, ())
-
-        @dataclass
-        class C:
-            a: int
-            b: int = field(kw_only=True)
-        self.assertEqual(C(42, b=10).__match_args__, ('a',))
-
-    def test_KW_ONLY(self):
-        @dataclass
-        class A:
-            a: int
-            _: KW_ONLY
-            b: int
-            c: int
-        A(3, c=5, b=4)
-        msg = "takes 2 positional arguments but 4 were given"
-        with self.assertRaisesRegex(TypeError, msg):
-            A(3, 4, 5)
-
-
-        @dataclass(kw_only=True)
-        class B:
-            a: int
-            _: KW_ONLY
-            b: int
-            c: int
-        B(a=3, b=4, c=5)
-        msg = "takes 1 positional argument but 4 were given"
-        with self.assertRaisesRegex(TypeError, msg):
-            B(3, 4, 5)
-
-        # Explicitly make a field that follows KW_ONLY be non-keyword-only.
-        @dataclass
-        class C:
-            a: int
-            _: KW_ONLY
-            b: int
-            c: int = field(kw_only=False)
-        c = C(1, 2, b=3)
-        self.assertEqual(c.a, 1)
-        self.assertEqual(c.b, 3)
-        self.assertEqual(c.c, 2)
-        c = C(1, b=3, c=2)
-        self.assertEqual(c.a, 1)
-        self.assertEqual(c.b, 3)
-        self.assertEqual(c.c, 2)
-        c = C(1, b=3, c=2)
-        self.assertEqual(c.a, 1)
-        self.assertEqual(c.b, 3)
-        self.assertEqual(c.c, 2)
-        c = C(c=2, b=3, a=1)
-        self.assertEqual(c.a, 1)
-        self.assertEqual(c.b, 3)
-        self.assertEqual(c.c, 2)
-
-    def test_KW_ONLY_as_string(self):
-        @dataclass
-        class A:
-            a: int
-            _: 'dataclasses.KW_ONLY'
-            b: int
-            c: int
-        A(3, c=5, b=4)
-        msg = "takes 2 positional arguments but 4 were given"
-        with self.assertRaisesRegex(TypeError, msg):
-            A(3, 4, 5)
-
-    def test_KW_ONLY_twice(self):
-        msg = "'Y' is KW_ONLY, but KW_ONLY has already been specified"
-
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass
-            class A:
-                a: int
-                X: KW_ONLY
-                Y: KW_ONLY
-                b: int
-                c: int
-
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass
-            class A:
-                a: int
-                X: KW_ONLY
-                b: int
-                Y: KW_ONLY
-                c: int
-
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass
-            class A:
-                a: int
-                X: KW_ONLY
-                b: int
-                c: int
-                Y: KW_ONLY
-
-        # But this usage is okay, since it's not using KW_ONLY.
-        @dataclass
-        class A:
-            a: int
-            _: KW_ONLY
-            b: int
-            c: int = field(kw_only=True)
-
-        # And if inheriting, it's okay.
-        @dataclass
-        class A:
-            a: int
-            _: KW_ONLY
-            b: int
-            c: int
-        @dataclass
-        class B(A):
-            _: KW_ONLY
-            d: int
-
-        # Make sure the error is raised in a derived class.
-        with self.assertRaisesRegex(TypeError, msg):
-            @dataclass
-            class A:
-                a: int
-                _: KW_ONLY
-                b: int
-                c: int
-            @dataclass
-            class B(A):
-                X: KW_ONLY
-                d: int
-                Y: KW_ONLY
-
-
-    def test_post_init(self):
-        @dataclass
-        class A:
-            a: int
-            _: KW_ONLY
-            b: InitVar[int]
-            c: int
-            d: InitVar[int]
-            def __post_init__(self, b, d):
-                raise CustomError(f'{b=} {d=}')
-        with self.assertRaisesRegex(CustomError, 'b=3 d=4'):
-            A(1, c=2, b=3, d=4)
-
-        @dataclass
-        class B:
-            a: int
-            _: KW_ONLY
-            b: InitVar[int]
-            c: int
-            d: InitVar[int]
-            def __post_init__(self, b, d):
-                self.a = b
-                self.c = d
-        b = B(1, c=2, b=3, d=4)
-        self.assertEqual(asdict(b), {'a': 3, 'c': 4})
-
-    def test_defaults(self):
-        # For kwargs, make sure we can have defaults after non-defaults.
-        @dataclass
-        class A:
-            a: int = 0
-            _: KW_ONLY
-            b: int
-            c: int = 1
-            d: int
-
-        a = A(d=4, b=3)
-        self.assertEqual(a.a, 0)
-        self.assertEqual(a.b, 3)
-        self.assertEqual(a.c, 1)
-        self.assertEqual(a.d, 4)
-
-        # Make sure we still check for non-kwarg non-defaults not following
-        # defaults.
-        err_regex = "non-default argument 'z' follows default argument"
-        with self.assertRaisesRegex(TypeError, err_regex):
-            @dataclass
-            class A:
-                a: int = 0
-                z: int
-                _: KW_ONLY
-                b: int
-                c: int = 1
-                d: int
-
-    def test_make_dataclass(self):
-        A = make_dataclass("A", ['a'], kw_only=True)
-        self.assertTrue(fields(A)[0].kw_only)
-
-        B = make_dataclass("B",
-                           ['a', ('b', int, field(kw_only=False))],
-                           kw_only=True)
-        self.assertTrue(fields(B)[0].kw_only)
-        self.assertFalse(fields(B)[1].kw_only)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_dataclasses/__init__.py b/Lib/test/test_dataclasses/__init__.py
new file mode 100644
index 00000000000000..272d427875ae40
--- /dev/null
+++ b/Lib/test/test_dataclasses/__init__.py
@@ -0,0 +1,4642 @@
+# Deliberately use "from dataclasses import *".  Every name in __all__
+# is tested, so they all must be present.  This is a way to catch
+# missing ones.
+
+from dataclasses import *
+
+import abc
+import io
+import pickle
+import inspect
+import builtins
+import types
+import weakref
+import traceback
+import unittest
+from unittest.mock import Mock
+from typing import ClassVar, Any, List, Union, Tuple, Dict, Generic, TypeVar, Optional, Protocol, DefaultDict
+from typing import get_type_hints
+from collections import deque, OrderedDict, namedtuple, defaultdict
+from functools import total_ordering
+
+import typing       # Needed for the string "typing.ClassVar[int]" to work as an annotation.
+import dataclasses  # Needed for the string "dataclasses.InitVar[int]" to work as an annotation.
+
+# Just any custom exception we can catch.
+class CustomError(Exception): pass
+
+class TestCase(unittest.TestCase):
+    def test_no_fields(self):
+        @dataclass
+        class C:
+            pass
+
+        o = C()
+        self.assertEqual(len(fields(C)), 0)
+
+    def test_no_fields_but_member_variable(self):
+        @dataclass
+        class C:
+            i = 0
+
+        o = C()
+        self.assertEqual(len(fields(C)), 0)
+
+    def test_one_field_no_default(self):
+        @dataclass
+        class C:
+            x: int
+
+        o = C(42)
+        self.assertEqual(o.x, 42)
+
+    def test_field_default_default_factory_error(self):
+        msg = "cannot specify both default and default_factory"
+        with self.assertRaisesRegex(ValueError, msg):
+            @dataclass
+            class C:
+                x: int = field(default=1, default_factory=int)
+
+    def test_field_repr(self):
+        int_field = field(default=1, init=True, repr=False)
+        int_field.name = "id"
+        repr_output = repr(int_field)
+        expected_output = "Field(name='id',type=None," \
+                           f"default=1,default_factory={MISSING!r}," \
+                           "init=True,repr=False,hash=None," \
+                           "compare=True,metadata=mappingproxy({})," \
+                           f"kw_only={MISSING!r}," \
+                           "_field_type=None)"
+
+        self.assertEqual(repr_output, expected_output)
+
+    def test_field_recursive_repr(self):
+        rec_field = field()
+        rec_field.type = rec_field
+        rec_field.name = "id"
+        repr_output = repr(rec_field)
+
+        self.assertIn(",type=...,", repr_output)
+
+    def test_recursive_annotation(self):
+        class C:
+            pass
+
+        @dataclass
+        class D:
+            C: C = field()
+
+        self.assertIn(",type=...,", repr(D.__dataclass_fields__["C"]))
+
+    def test_dataclass_params_repr(self):
+        # Even though this is testing an internal implementation detail,
+        # it's testing a feature we want to make sure is correctly implemented
+        # for the sake of dataclasses itself
+        @dataclass(slots=True, frozen=True)
+        class Some: pass
+
+        repr_output = repr(Some.__dataclass_params__)
+        expected_output = "_DataclassParams(init=True,repr=True," \
+                          "eq=True,order=False,unsafe_hash=False,frozen=True," \
+                          "match_args=True,kw_only=False," \
+                          "slots=True,weakref_slot=False)"
+        self.assertEqual(repr_output, expected_output)
+
+    def test_dataclass_params_signature(self):
+        # Even though this is testing an internal implementation detail,
+        # it's testing a feature we want to make sure is correctly implemented
+        # for the sake of dataclasses itself
+        @dataclass
+        class Some: pass
+
+        for param in inspect.signature(dataclass).parameters:
+            if param == 'cls':
+                continue
+            self.assertTrue(hasattr(Some.__dataclass_params__, param), msg=param)
+
+    def test_named_init_params(self):
+        @dataclass
+        class C:
+            x: int
+
+        o = C(x=32)
+        self.assertEqual(o.x, 32)
+
+    def test_two_fields_one_default(self):
+        @dataclass
+        class C:
+            x: int
+            y: int = 0
+
+        o = C(3)
+        self.assertEqual((o.x, o.y), (3, 0))
+
+        # Non-defaults following defaults.
+        with self.assertRaisesRegex(TypeError,
+                                    "non-default argument 'y' follows "
+                                    "default argument 'x'"):
+            @dataclass
+            class C:
+                x: int = 0
+                y: int
+
+        # A derived class adds a non-default field after a default one.
+        with self.assertRaisesRegex(TypeError,
+                                    "non-default argument 'y' follows "
+                                    "default argument 'x'"):
+            @dataclass
+            class B:
+                x: int = 0
+
+            @dataclass
+            class C(B):
+                y: int
+
+        # Override a base class field and add a default to
+        #  a field which didn't use to have a default.
+        with self.assertRaisesRegex(TypeError,
+                                    "non-default argument 'y' follows "
+                                    "default argument 'x'"):
+            @dataclass
+            class B:
+                x: int
+                y: int
+
+            @dataclass
+            class C(B):
+                x: int = 0
+
+    def test_overwrite_hash(self):
+        # Test that declaring this class isn't an error.  It should
+        #  use the user-provided __hash__.
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            def __hash__(self):
+                return 301
+        self.assertEqual(hash(C(100)), 301)
+
+        # Test that declaring this class isn't an error.  It should
+        #  use the generated __hash__.
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            def __eq__(self, other):
+                return False
+        self.assertEqual(hash(C(100)), hash((100,)))
+
+        # But this one should generate an exception, because with
+        #  unsafe_hash=True, it's an error to have a __hash__ defined.
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __hash__'):
+            @dataclass(unsafe_hash=True)
+            class C:
+                def __hash__(self):
+                    pass
+
+        # Creating this class should not generate an exception,
+        #  because even though __hash__ exists before @dataclass is
+        #  called, (due to __eq__ being defined), since it's None
+        #  that's okay.
+        @dataclass(unsafe_hash=True)
+        class C:
+            x: int
+            def __eq__(self):
+                pass
+        # The generated hash function works as we'd expect.
+        self.assertEqual(hash(C(10)), hash((10,)))
+
+        # Creating this class should generate an exception, because
+        #  __hash__ exists and is not None, which it would be if it
+        #  had been auto-generated due to __eq__ being defined.
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __hash__'):
+            @dataclass(unsafe_hash=True)
+            class C:
+                x: int
+                def __eq__(self):
+                    pass
+                def __hash__(self):
+                    pass
+
+    def test_overwrite_fields_in_derived_class(self):
+        # Note that x from C1 replaces x in Base, but the order remains
+        #  the same as defined in Base.
+        @dataclass
+        class Base:
+            x: Any = 15.0
+            y: int = 0
+
+        @dataclass
+        class C1(Base):
+            z: int = 10
+            x: int = 15
+
+        o = Base()
+        self.assertEqual(repr(o), 'TestCase.test_overwrite_fields_in_derived_class.<locals>.Base(x=15.0, y=0)')
+
+        o = C1()
+        self.assertEqual(repr(o), 'TestCase.test_overwrite_fields_in_derived_class.<locals>.C1(x=15, y=0, z=10)')
+
+        o = C1(x=5)
+        self.assertEqual(repr(o), 'TestCase.test_overwrite_fields_in_derived_class.<locals>.C1(x=5, y=0, z=10)')
+
+    def test_field_named_self(self):
+        @dataclass
+        class C:
+            self: str
+        c=C('foo')
+        self.assertEqual(c.self, 'foo')
+
+        # Make sure the first parameter is not named 'self'.
+        sig = inspect.signature(C.__init__)
+        first = next(iter(sig.parameters))
+        self.assertNotEqual('self', first)
+
+        # But we do use 'self' if no field named self.
+        @dataclass
+        class C:
+            selfx: str
+
+        # Make sure the first parameter is named 'self'.
+        sig = inspect.signature(C.__init__)
+        first = next(iter(sig.parameters))
+        self.assertEqual('self', first)
+
+    def test_field_named_object(self):
+        @dataclass
+        class C:
+            object: str
+        c = C('foo')
+        self.assertEqual(c.object, 'foo')
+
+    def test_field_named_object_frozen(self):
+        @dataclass(frozen=True)
+        class C:
+            object: str
+        c = C('foo')
+        self.assertEqual(c.object, 'foo')
+
+    def test_field_named_BUILTINS_frozen(self):
+        # gh-96151
+        @dataclass(frozen=True)
+        class C:
+            BUILTINS: int
+        c = C(5)
+        self.assertEqual(c.BUILTINS, 5)
+
+    def test_field_with_special_single_underscore_names(self):
+        # gh-98886
+
+        @dataclass
+        class X:
+            x: int = field(default_factory=lambda: 111)
+            _dflt_x: int = field(default_factory=lambda: 222)
+
+        X()
+
+        @dataclass
+        class Y:
+            y: int = field(default_factory=lambda: 111)
+            _HAS_DEFAULT_FACTORY: int = 222
+
+        assert Y(y=222).y == 222
+
+    def test_field_named_like_builtin(self):
+        # Attribute names can shadow built-in names
+        # since code generation is used.
+        # Ensure that this is not happening.
+        exclusions = {'None', 'True', 'False'}
+        builtins_names = sorted(
+            b for b in builtins.__dict__.keys()
+            if not b.startswith('__') and b not in exclusions
+        )
+        attributes = [(name, str) for name in builtins_names]
+        C = make_dataclass('C', attributes)
+
+        c = C(*[name for name in builtins_names])
+
+        for name in builtins_names:
+            self.assertEqual(getattr(c, name), name)
+
+    def test_field_named_like_builtin_frozen(self):
+        # Attribute names can shadow built-in names
+        # since code generation is used.
+        # Ensure that this is not happening
+        # for frozen data classes.
+        exclusions = {'None', 'True', 'False'}
+        builtins_names = sorted(
+            b for b in builtins.__dict__.keys()
+            if not b.startswith('__') and b not in exclusions
+        )
+        attributes = [(name, str) for name in builtins_names]
+        C = make_dataclass('C', attributes, frozen=True)
+
+        c = C(*[name for name in builtins_names])
+
+        for name in builtins_names:
+            self.assertEqual(getattr(c, name), name)
+
+    def test_0_field_compare(self):
+        # Ensure that order=False is the default.
+        @dataclass
+        class C0:
+            pass
+
+        @dataclass(order=False)
+        class C1:
+            pass
+
+        for cls in [C0, C1]:
+            with self.subTest(cls=cls):
+                self.assertEqual(cls(), cls())
+                for idx, fn in enumerate([lambda a, b: a < b,
+                                          lambda a, b: a <= b,
+                                          lambda a, b: a > b,
+                                          lambda a, b: a >= b]):
+                    with self.subTest(idx=idx):
+                        with self.assertRaisesRegex(TypeError,
+                                                    f"not supported between instances of '{cls.__name__}' and '{cls.__name__}'"):
+                            fn(cls(), cls())
+
+        @dataclass(order=True)
+        class C:
+            pass
+        self.assertLessEqual(C(), C())
+        self.assertGreaterEqual(C(), C())
+
+    def test_1_field_compare(self):
+        # Ensure that order=False is the default.
+        @dataclass
+        class C0:
+            x: int
+
+        @dataclass(order=False)
+        class C1:
+            x: int
+
+        for cls in [C0, C1]:
+            with self.subTest(cls=cls):
+                self.assertEqual(cls(1), cls(1))
+                self.assertNotEqual(cls(0), cls(1))
+                for idx, fn in enumerate([lambda a, b: a < b,
+                                          lambda a, b: a <= b,
+                                          lambda a, b: a > b,
+                                          lambda a, b: a >= b]):
+                    with self.subTest(idx=idx):
+                        with self.assertRaisesRegex(TypeError,
+                                                    f"not supported between instances of '{cls.__name__}' and '{cls.__name__}'"):
+                            fn(cls(0), cls(0))
+
+        @dataclass(order=True)
+        class C:
+            x: int
+        self.assertLess(C(0), C(1))
+        self.assertLessEqual(C(0), C(1))
+        self.assertLessEqual(C(1), C(1))
+        self.assertGreater(C(1), C(0))
+        self.assertGreaterEqual(C(1), C(0))
+        self.assertGreaterEqual(C(1), C(1))
+
+    def test_simple_compare(self):
+        # Ensure that order=False is the default.
+        @dataclass
+        class C0:
+            x: int
+            y: int
+
+        @dataclass(order=False)
+        class C1:
+            x: int
+            y: int
+
+        for cls in [C0, C1]:
+            with self.subTest(cls=cls):
+                self.assertEqual(cls(0, 0), cls(0, 0))
+                self.assertEqual(cls(1, 2), cls(1, 2))
+                self.assertNotEqual(cls(1, 0), cls(0, 0))
+                self.assertNotEqual(cls(1, 0), cls(1, 1))
+                for idx, fn in enumerate([lambda a, b: a < b,
+                                          lambda a, b: a <= b,
+                                          lambda a, b: a > b,
+                                          lambda a, b: a >= b]):
+                    with self.subTest(idx=idx):
+                        with self.assertRaisesRegex(TypeError,
+                                                    f"not supported between instances of '{cls.__name__}' and '{cls.__name__}'"):
+                            fn(cls(0, 0), cls(0, 0))
+
+        @dataclass(order=True)
+        class C:
+            x: int
+            y: int
+
+        for idx, fn in enumerate([lambda a, b: a == b,
+                                  lambda a, b: a <= b,
+                                  lambda a, b: a >= b]):
+            with self.subTest(idx=idx):
+                self.assertTrue(fn(C(0, 0), C(0, 0)))
+
+        for idx, fn in enumerate([lambda a, b: a < b,
+                                  lambda a, b: a <= b,
+                                  lambda a, b: a != b]):
+            with self.subTest(idx=idx):
+                self.assertTrue(fn(C(0, 0), C(0, 1)))
+                self.assertTrue(fn(C(0, 1), C(1, 0)))
+                self.assertTrue(fn(C(1, 0), C(1, 1)))
+
+        for idx, fn in enumerate([lambda a, b: a > b,
+                                  lambda a, b: a >= b,
+                                  lambda a, b: a != b]):
+            with self.subTest(idx=idx):
+                self.assertTrue(fn(C(0, 1), C(0, 0)))
+                self.assertTrue(fn(C(1, 0), C(0, 1)))
+                self.assertTrue(fn(C(1, 1), C(1, 0)))
+
+    def test_compare_subclasses(self):
+        # Comparisons fail for subclasses, even if no fields
+        #  are added.
+        @dataclass
+        class B:
+            i: int
+
+        @dataclass
+        class C(B):
+            pass
+
+        for idx, (fn, expected) in enumerate([(lambda a, b: a == b, False),
+                                              (lambda a, b: a != b, True)]):
+            with self.subTest(idx=idx):
+                self.assertEqual(fn(B(0), C(0)), expected)
+
+        for idx, fn in enumerate([lambda a, b: a < b,
+                                  lambda a, b: a <= b,
+                                  lambda a, b: a > b,
+                                  lambda a, b: a >= b]):
+            with self.subTest(idx=idx):
+                with self.assertRaisesRegex(TypeError,
+                                            "not supported between instances of 'B' and 'C'"):
+                    fn(B(0), C(0))
+
+    def test_eq_order(self):
+        # Test combining eq and order.
+        for (eq,    order, result   ) in [
+            (False, False, 'neither'),
+            (False, True,  'exception'),
+            (True,  False, 'eq_only'),
+            (True,  True,  'both'),
+        ]:
+            with self.subTest(eq=eq, order=order):
+                if result == 'exception':
+                    with self.assertRaisesRegex(ValueError, 'eq must be true if order is true'):
+                        @dataclass(eq=eq, order=order)
+                        class C:
+                            pass
+                else:
+                    @dataclass(eq=eq, order=order)
+                    class C:
+                        pass
+
+                    if result == 'neither':
+                        self.assertNotIn('__eq__', C.__dict__)
+                        self.assertNotIn('__lt__', C.__dict__)
+                        self.assertNotIn('__le__', C.__dict__)
+                        self.assertNotIn('__gt__', C.__dict__)
+                        self.assertNotIn('__ge__', C.__dict__)
+                    elif result == 'both':
+                        self.assertIn('__eq__', C.__dict__)
+                        self.assertIn('__lt__', C.__dict__)
+                        self.assertIn('__le__', C.__dict__)
+                        self.assertIn('__gt__', C.__dict__)
+                        self.assertIn('__ge__', C.__dict__)
+                    elif result == 'eq_only':
+                        self.assertIn('__eq__', C.__dict__)
+                        self.assertNotIn('__lt__', C.__dict__)
+                        self.assertNotIn('__le__', C.__dict__)
+                        self.assertNotIn('__gt__', C.__dict__)
+                        self.assertNotIn('__ge__', C.__dict__)
+                    else:
+                        assert False, f'unknown result {result!r}'
+
+    def test_field_no_default(self):
+        @dataclass
+        class C:
+            x: int = field()
+
+        self.assertEqual(C(5).x, 5)
+
+        with self.assertRaisesRegex(TypeError,
+                                    r"__init__\(\) missing 1 required "
+                                    "positional argument: 'x'"):
+            C()
+
+    def test_field_default(self):
+        default = object()
+        @dataclass
+        class C:
+            x: object = field(default=default)
+
+        self.assertIs(C.x, default)
+        c = C(10)
+        self.assertEqual(c.x, 10)
+
+        # If we delete the instance attribute, we should then see the
+        #  class attribute.
+        del c.x
+        self.assertIs(c.x, default)
+
+        self.assertIs(C().x, default)
+
+    def test_not_in_repr(self):
+        @dataclass
+        class C:
+            x: int = field(repr=False)
+        with self.assertRaises(TypeError):
+            C()
+        c = C(10)
+        self.assertEqual(repr(c), 'TestCase.test_not_in_repr.<locals>.C()')
+
+        @dataclass
+        class C:
+            x: int = field(repr=False)
+            y: int
+        c = C(10, 20)
+        self.assertEqual(repr(c), 'TestCase.test_not_in_repr.<locals>.C(y=20)')
+
+    def test_not_in_compare(self):
+        @dataclass
+        class C:
+            x: int = 0
+            y: int = field(compare=False, default=4)
+
+        self.assertEqual(C(), C(0, 20))
+        self.assertEqual(C(1, 10), C(1, 20))
+        self.assertNotEqual(C(3), C(4, 10))
+        self.assertNotEqual(C(3, 10), C(4, 10))
+
+    def test_no_unhashable_default(self):
+        # See bpo-44674.
+        class Unhashable:
+            __hash__ = None
+
+        unhashable_re = 'mutable default .* for field a is not allowed'
+        with self.assertRaisesRegex(ValueError, unhashable_re):
+            @dataclass
+            class A:
+                a: dict = {}
+
+        with self.assertRaisesRegex(ValueError, unhashable_re):
+            @dataclass
+            class A:
+                a: Any = Unhashable()
+
+        # Make sure that the machinery looking for hashability is using the
+        # class's __hash__, not the instance's __hash__.
+        with self.assertRaisesRegex(ValueError, unhashable_re):
+            unhashable = Unhashable()
+            # This shouldn't make the variable hashable.
+            unhashable.__hash__ = lambda: 0
+            @dataclass
+            class A:
+                a: Any = unhashable
+
+    def test_hash_field_rules(self):
+        # Test all 6 cases of:
+        #  hash=True/False/None
+        #  compare=True/False
+        for (hash_,    compare, result  ) in [
+            (True,     False,   'field' ),
+            (True,     True,    'field' ),
+            (False,    False,   'absent'),
+            (False,    True,    'absent'),
+            (None,     False,   'absent'),
+            (None,     True,    'field' ),
+            ]:
+            with self.subTest(hash=hash_, compare=compare):
+                @dataclass(unsafe_hash=True)
+                class C:
+                    x: int = field(compare=compare, hash=hash_, default=5)
+
+                if result == 'field':
+                    # __hash__ contains the field.
+                    self.assertEqual(hash(C(5)), hash((5,)))
+                elif result == 'absent':
+                    # The field is not present in the hash.
+                    self.assertEqual(hash(C(5)), hash(()))
+                else:
+                    assert False, f'unknown result {result!r}'
+
+    def test_init_false_no_default(self):
+        # If init=False and no default value, then the field won't be
+        #  present in the instance.
+        @dataclass
+        class C:
+            x: int = field(init=False)
+
+        self.assertNotIn('x', C().__dict__)
+
+        @dataclass
+        class C:
+            x: int
+            y: int = 0
+            z: int = field(init=False)
+            t: int = 10
+
+        self.assertNotIn('z', C(0).__dict__)
+        self.assertEqual(vars(C(5)), {'t': 10, 'x': 5, 'y': 0})
+
+    def test_class_marker(self):
+        @dataclass
+        class C:
+            x: int
+            y: str = field(init=False, default=None)
+            z: str = field(repr=False)
+
+        the_fields = fields(C)
+        # the_fields is a tuple of 3 items, each value
+        #  is in __annotations__.
+        self.assertIsInstance(the_fields, tuple)
+        for f in the_fields:
+            self.assertIs(type(f), Field)
+            self.assertIn(f.name, C.__annotations__)
+
+        self.assertEqual(len(the_fields), 3)
+
+        self.assertEqual(the_fields[0].name, 'x')
+        self.assertEqual(the_fields[0].type, int)
+        self.assertFalse(hasattr(C, 'x'))
+        self.assertTrue (the_fields[0].init)
+        self.assertTrue (the_fields[0].repr)
+        self.assertEqual(the_fields[1].name, 'y')
+        self.assertEqual(the_fields[1].type, str)
+        self.assertIsNone(getattr(C, 'y'))
+        self.assertFalse(the_fields[1].init)
+        self.assertTrue (the_fields[1].repr)
+        self.assertEqual(the_fields[2].name, 'z')
+        self.assertEqual(the_fields[2].type, str)
+        self.assertFalse(hasattr(C, 'z'))
+        self.assertTrue (the_fields[2].init)
+        self.assertFalse(the_fields[2].repr)
+
+    def test_field_order(self):
+        @dataclass
+        class B:
+            a: str = 'B:a'
+            b: str = 'B:b'
+            c: str = 'B:c'
+
+        @dataclass
+        class C(B):
+            b: str = 'C:b'
+
+        self.assertEqual([(f.name, f.default) for f in fields(C)],
+                         [('a', 'B:a'),
+                          ('b', 'C:b'),
+                          ('c', 'B:c')])
+
+        @dataclass
+        class D(B):
+            c: str = 'D:c'
+
+        self.assertEqual([(f.name, f.default) for f in fields(D)],
+                         [('a', 'B:a'),
+                          ('b', 'B:b'),
+                          ('c', 'D:c')])
+
+        @dataclass
+        class E(D):
+            a: str = 'E:a'
+            d: str = 'E:d'
+
+        self.assertEqual([(f.name, f.default) for f in fields(E)],
+                         [('a', 'E:a'),
+                          ('b', 'B:b'),
+                          ('c', 'D:c'),
+                          ('d', 'E:d')])
+
+    def test_class_attrs(self):
+        # We only have a class attribute if a default value is
+        #  specified, either directly or via a field with a default.
+        default = object()
+        @dataclass
+        class C:
+            x: int
+            y: int = field(repr=False)
+            z: object = default
+            t: int = field(default=100)
+
+        self.assertFalse(hasattr(C, 'x'))
+        self.assertFalse(hasattr(C, 'y'))
+        self.assertIs   (C.z, default)
+        self.assertEqual(C.t, 100)
+
+    def test_disallowed_mutable_defaults(self):
+        # For the known types, don't allow mutable default values.
+        for typ, empty, non_empty in [(list, [], [1]),
+                                      (dict, {}, {0:1}),
+                                      (set, set(), set([1])),
+                                      ]:
+            with self.subTest(typ=typ):
+                # Can't use a zero-length value.
+                with self.assertRaisesRegex(ValueError,
+                                            f'mutable default {typ} for field '
+                                            'x is not allowed'):
+                    @dataclass
+                    class Point:
+                        x: typ = empty
+
+
+                # Nor a non-zero-length value
+                with self.assertRaisesRegex(ValueError,
+                                            f'mutable default {typ} for field '
+                                            'y is not allowed'):
+                    @dataclass
+                    class Point:
+                        y: typ = non_empty
+
+                # Check subtypes also fail.
+                class Subclass(typ): pass
+
+                with self.assertRaisesRegex(ValueError,
+                                            "mutable default .*Subclass'>"
+                                            " for field z is not allowed"
+                                            ):
+                    @dataclass
+                    class Point:
+                        z: typ = Subclass()
+
+                # Because this is a ClassVar, it can be mutable.
+                @dataclass
+                class C:
+                    z: ClassVar[typ] = typ()
+
+                # Because this is a ClassVar, it can be mutable.
+                @dataclass
+                class C:
+                    x: ClassVar[typ] = Subclass()
+
+    def test_deliberately_mutable_defaults(self):
+        # If a mutable default isn't in the known list of
+        #  (list, dict, set), then it's okay.
+        class Mutable:
+            def __init__(self):
+                self.l = []
+
+        @dataclass
+        class C:
+            x: Mutable
+
+        # These 2 instances will share this value of x.
+        lst = Mutable()
+        o1 = C(lst)
+        o2 = C(lst)
+        self.assertEqual(o1, o2)
+        o1.x.l.extend([1, 2])
+        self.assertEqual(o1, o2)
+        self.assertEqual(o1.x.l, [1, 2])
+        self.assertIs(o1.x, o2.x)
+
+    def test_no_options(self):
+        # Call with dataclass().
+        @dataclass()
+        class C:
+            x: int
+
+        self.assertEqual(C(42).x, 42)
+
+    def test_not_tuple(self):
+        # Make sure we can't be compared to a tuple.
+        @dataclass
+        class Point:
+            x: int
+            y: int
+        self.assertNotEqual(Point(1, 2), (1, 2))
+
+        # And that we can't compare to another unrelated dataclass.
+        @dataclass
+        class C:
+            x: int
+            y: int
+        self.assertNotEqual(Point(1, 3), C(1, 3))
+
+    def test_not_other_dataclass(self):
+        # Test that some of the problems with namedtuple don't happen
+        #  here.
+        @dataclass
+        class Point3D:
+            x: int
+            y: int
+            z: int
+
+        @dataclass
+        class Date:
+            year: int
+            month: int
+            day: int
+
+        self.assertNotEqual(Point3D(2017, 6, 3), Date(2017, 6, 3))
+        self.assertNotEqual(Point3D(1, 2, 3), (1, 2, 3))
+
+        # Make sure we can't unpack.
+        with self.assertRaisesRegex(TypeError, 'unpack'):
+            x, y, z = Point3D(4, 5, 6)
+
+        # Make sure another class with the same field names isn't
+        #  equal.
+        @dataclass
+        class Point3Dv1:
+            x: int = 0
+            y: int = 0
+            z: int = 0
+        self.assertNotEqual(Point3D(0, 0, 0), Point3Dv1())
+
+    def test_function_annotations(self):
+        # Some dummy class and instance to use as a default.
+        class F:
+            pass
+        f = F()
+
+        def validate_class(cls):
+            # First, check __annotations__, even though they're not
+            #  function annotations.
+            self.assertEqual(cls.__annotations__['i'], int)
+            self.assertEqual(cls.__annotations__['j'], str)
+            self.assertEqual(cls.__annotations__['k'], F)
+            self.assertEqual(cls.__annotations__['l'], float)
+            self.assertEqual(cls.__annotations__['z'], complex)
+
+            # Verify __init__.
+
+            signature = inspect.signature(cls.__init__)
+            # Check the return type, should be None.
+            self.assertIs(signature.return_annotation, None)
+
+            # Check each parameter.
+            params = iter(signature.parameters.values())
+            param = next(params)
+            # This is testing an internal name, and probably shouldn't be tested.
+            self.assertEqual(param.name, 'self')
+            param = next(params)
+            self.assertEqual(param.name, 'i')
+            self.assertIs   (param.annotation, int)
+            self.assertEqual(param.default, inspect.Parameter.empty)
+            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
+            param = next(params)
+            self.assertEqual(param.name, 'j')
+            self.assertIs   (param.annotation, str)
+            self.assertEqual(param.default, inspect.Parameter.empty)
+            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
+            param = next(params)
+            self.assertEqual(param.name, 'k')
+            self.assertIs   (param.annotation, F)
+            # Don't test for the default, since it's set to MISSING.
+            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
+            param = next(params)
+            self.assertEqual(param.name, 'l')
+            self.assertIs   (param.annotation, float)
+            # Don't test for the default, since it's set to MISSING.
+            self.assertEqual(param.kind, inspect.Parameter.POSITIONAL_OR_KEYWORD)
+            self.assertRaises(StopIteration, next, params)
+
+
+        @dataclass
+        class C:
+            i: int
+            j: str
+            k: F = f
+            l: float=field(default=None)
+            z: complex=field(default=3+4j, init=False)
+
+        validate_class(C)
+
+        # Now repeat with __hash__.
+        @dataclass(frozen=True, unsafe_hash=True)
+        class C:
+            i: int
+            j: str
+            k: F = f
+            l: float=field(default=None)
+            z: complex=field(default=3+4j, init=False)
+
+        validate_class(C)
+
+    def test_missing_default(self):
+        # Test that MISSING works the same as a default not being
+        #  specified.
+        @dataclass
+        class C:
+            x: int=field(default=MISSING)
+        with self.assertRaisesRegex(TypeError,
+                                    r'__init__\(\) missing 1 required '
+                                    'positional argument'):
+            C()
+        self.assertNotIn('x', C.__dict__)
+
+        @dataclass
+        class D:
+            x: int
+        with self.assertRaisesRegex(TypeError,
+                                    r'__init__\(\) missing 1 required '
+                                    'positional argument'):
+            D()
+        self.assertNotIn('x', D.__dict__)
+
+    def test_missing_default_factory(self):
+        # Test that MISSING works the same as a default factory not
+        #  being specified (which is really the same as a default not
+        #  being specified, too).
+        @dataclass
+        class C:
+            x: int=field(default_factory=MISSING)
+        with self.assertRaisesRegex(TypeError,
+                                    r'__init__\(\) missing 1 required '
+                                    'positional argument'):
+            C()
+        self.assertNotIn('x', C.__dict__)
+
+        @dataclass
+        class D:
+            x: int=field(default=MISSING, default_factory=MISSING)
+        with self.assertRaisesRegex(TypeError,
+                                    r'__init__\(\) missing 1 required '
+                                    'positional argument'):
+            D()
+        self.assertNotIn('x', D.__dict__)
+
+    def test_missing_repr(self):
+        self.assertIn('MISSING_TYPE object', repr(MISSING))
+
+    def test_dont_include_other_annotations(self):
+        @dataclass
+        class C:
+            i: int
+            def foo(self) -> int:
+                return 4
+            @property
+            def bar(self) -> int:
+                return 5
+        self.assertEqual(list(C.__annotations__), ['i'])
+        self.assertEqual(C(10).foo(), 4)
+        self.assertEqual(C(10).bar, 5)
+        self.assertEqual(C(10).i, 10)
+
+    def test_post_init(self):
+        # Just make sure it gets called
+        @dataclass
+        class C:
+            def __post_init__(self):
+                raise CustomError()
+        with self.assertRaises(CustomError):
+            C()
+
+        @dataclass
+        class C:
+            i: int = 10
+            def __post_init__(self):
+                if self.i == 10:
+                    raise CustomError()
+        with self.assertRaises(CustomError):
+            C()
+        # post-init gets called, but doesn't raise. This is just
+        #  checking that self is used correctly.
+        C(5)
+
+        # If there's not an __init__, then post-init won't get called.
+        @dataclass(init=False)
+        class C:
+            def __post_init__(self):
+                raise CustomError()
+        # Creating the class won't raise
+        C()
+
+        @dataclass
+        class C:
+            x: int = 0
+            def __post_init__(self):
+                self.x *= 2
+        self.assertEqual(C().x, 0)
+        self.assertEqual(C(2).x, 4)
+
+        # Make sure that if we're frozen, post-init can't set
+        #  attributes.
+        @dataclass(frozen=True)
+        class C:
+            x: int = 0
+            def __post_init__(self):
+                self.x *= 2
+        with self.assertRaises(FrozenInstanceError):
+            C()
+
+    def test_post_init_super(self):
+        # Make sure super() post-init isn't called by default.
+        class B:
+            def __post_init__(self):
+                raise CustomError()
+
+        @dataclass
+        class C(B):
+            def __post_init__(self):
+                self.x = 5
+
+        self.assertEqual(C().x, 5)
+
+        # Now call super(), and it will raise.
+        @dataclass
+        class C(B):
+            def __post_init__(self):
+                super().__post_init__()
+
+        with self.assertRaises(CustomError):
+            C()
+
+        # Make sure post-init is called, even if not defined in our
+        #  class.
+        @dataclass
+        class C(B):
+            pass
+
+        with self.assertRaises(CustomError):
+            C()
+
+    def test_post_init_staticmethod(self):
+        flag = False
+        @dataclass
+        class C:
+            x: int
+            y: int
+            @staticmethod
+            def __post_init__():
+                nonlocal flag
+                flag = True
+
+        self.assertFalse(flag)
+        c = C(3, 4)
+        self.assertEqual((c.x, c.y), (3, 4))
+        self.assertTrue(flag)
+
+    def test_post_init_classmethod(self):
+        @dataclass
+        class C:
+            flag = False
+            x: int
+            y: int
+            @classmethod
+            def __post_init__(cls):
+                cls.flag = True
+
+        self.assertFalse(C.flag)
+        c = C(3, 4)
+        self.assertEqual((c.x, c.y), (3, 4))
+        self.assertTrue(C.flag)
+
+    def test_post_init_not_auto_added(self):
+        # See bpo-46757, which had proposed always adding __post_init__.  As
+        # Raymond Hettinger pointed out, that would be a breaking change.  So,
+        # add a test to make sure that the current behavior doesn't change.
+
+        @dataclass
+        class A0:
+            pass
+
+        @dataclass
+        class B0:
+            b_called: bool = False
+            def __post_init__(self):
+                self.b_called = True
+
+        @dataclass
+        class C0(A0, B0):
+            c_called: bool = False
+            def __post_init__(self):
+                super().__post_init__()
+                self.c_called = True
+
+        # Since A0 has no __post_init__, and one wasn't automatically added
+        # (because that's the rule: it's never added by @dataclass, it's only
+        # the class author that can add it), then B0.__post_init__ is called.
+        # Verify that.
+        c = C0()
+        self.assertTrue(c.b_called)
+        self.assertTrue(c.c_called)
+
+        ######################################
+        # Now, the same thing, except A1 defines __post_init__.
+        @dataclass
+        class A1:
+            def __post_init__(self):
+                pass
+
+        @dataclass
+        class B1:
+            b_called: bool = False
+            def __post_init__(self):
+                self.b_called = True
+
+        @dataclass
+        class C1(A1, B1):
+            c_called: bool = False
+            def __post_init__(self):
+                super().__post_init__()
+                self.c_called = True
+
+        # This time, B1.__post_init__ isn't being called.  This mimics what
+        # would happen if A1.__post_init__ had been automatically added,
+        # instead of manually added as we see here.  This test isn't really
+        # needed, but I'm including it just to demonstrate the changed
+        # behavior when A1 does define __post_init__.
+        c = C1()
+        self.assertFalse(c.b_called)
+        self.assertTrue(c.c_called)
+
+    def test_class_var(self):
+        # Make sure ClassVars are ignored in __init__, __repr__, etc.
+        @dataclass
+        class C:
+            x: int
+            y: int = 10
+            z: ClassVar[int] = 1000
+            w: ClassVar[int] = 2000
+            t: ClassVar[int] = 3000
+            s: ClassVar      = 4000
+
+        c = C(5)
+        self.assertEqual(repr(c), 'TestCase.test_class_var.<locals>.C(x=5, y=10)')
+        self.assertEqual(len(fields(C)), 2)                 # We have 2 fields.
+        self.assertEqual(len(C.__annotations__), 6)         # And 4 ClassVars.
+        self.assertEqual(c.z, 1000)
+        self.assertEqual(c.w, 2000)
+        self.assertEqual(c.t, 3000)
+        self.assertEqual(c.s, 4000)
+        C.z += 1
+        self.assertEqual(c.z, 1001)
+        c = C(20)
+        self.assertEqual((c.x, c.y), (20, 10))
+        self.assertEqual(c.z, 1001)
+        self.assertEqual(c.w, 2000)
+        self.assertEqual(c.t, 3000)
+        self.assertEqual(c.s, 4000)
+
+    def test_class_var_no_default(self):
+        # If a ClassVar has no default value, it should not be set on the class.
+        @dataclass
+        class C:
+            x: ClassVar[int]
+
+        self.assertNotIn('x', C.__dict__)
+
+    def test_class_var_default_factory(self):
+        # It makes no sense for a ClassVar to have a default factory. When
+        #  would it be called? Call it yourself, since it's class-wide.
+        with self.assertRaisesRegex(TypeError,
+                                    'cannot have a default factory'):
+            @dataclass
+            class C:
+                x: ClassVar[int] = field(default_factory=int)
+
+            self.assertNotIn('x', C.__dict__)
+
+    def test_class_var_with_default(self):
+        # If a ClassVar has a default value, it should be set on the class.
+        @dataclass
+        class C:
+            x: ClassVar[int] = 10
+        self.assertEqual(C.x, 10)
+
+        @dataclass
+        class C:
+            x: ClassVar[int] = field(default=10)
+        self.assertEqual(C.x, 10)
+
+    def test_class_var_frozen(self):
+        # Make sure ClassVars work even if we're frozen.
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            y: int = 10
+            z: ClassVar[int] = 1000
+            w: ClassVar[int] = 2000
+            t: ClassVar[int] = 3000
+
+        c = C(5)
+        self.assertEqual(repr(C(5)), 'TestCase.test_class_var_frozen.<locals>.C(x=5, y=10)')
+        self.assertEqual(len(fields(C)), 2)                 # We have 2 fields
+        self.assertEqual(len(C.__annotations__), 5)         # And 3 ClassVars
+        self.assertEqual(c.z, 1000)
+        self.assertEqual(c.w, 2000)
+        self.assertEqual(c.t, 3000)
+        # We can still modify the ClassVar, it's only instances that are
+        #  frozen.
+        C.z += 1
+        self.assertEqual(c.z, 1001)
+        c = C(20)
+        self.assertEqual((c.x, c.y), (20, 10))
+        self.assertEqual(c.z, 1001)
+        self.assertEqual(c.w, 2000)
+        self.assertEqual(c.t, 3000)
+
+    def test_init_var_no_default(self):
+        # If an InitVar has no default value, it should not be set on the class.
+        @dataclass
+        class C:
+            x: InitVar[int]
+
+        self.assertNotIn('x', C.__dict__)
+
+    def test_init_var_default_factory(self):
+        # It makes no sense for an InitVar to have a default factory. When
+        #  would it be called? Call it yourself, since it's class-wide.
+        with self.assertRaisesRegex(TypeError,
+                                    'cannot have a default factory'):
+            @dataclass
+            class C:
+                x: InitVar[int] = field(default_factory=int)
+
+            self.assertNotIn('x', C.__dict__)
+
+    def test_init_var_with_default(self):
+        # If an InitVar has a default value, it should be set on the class.
+        @dataclass
+        class C:
+            x: InitVar[int] = 10
+        self.assertEqual(C.x, 10)
+
+        @dataclass
+        class C:
+            x: InitVar[int] = field(default=10)
+        self.assertEqual(C.x, 10)
+
+    def test_init_var(self):
+        @dataclass
+        class C:
+            x: int = None
+            init_param: InitVar[int] = None
+
+            def __post_init__(self, init_param):
+                if self.x is None:
+                    self.x = init_param*2
+
+        c = C(init_param=10)
+        self.assertEqual(c.x, 20)
+
+    def test_init_var_preserve_type(self):
+        self.assertEqual(InitVar[int].type, int)
+
+        # Make sure the repr is correct.
+        self.assertEqual(repr(InitVar[int]), 'dataclasses.InitVar[int]')
+        self.assertEqual(repr(InitVar[List[int]]),
+                         'dataclasses.InitVar[typing.List[int]]')
+        self.assertEqual(repr(InitVar[list[int]]),
+                         'dataclasses.InitVar[list[int]]')
+        self.assertEqual(repr(InitVar[int|str]),
+                         'dataclasses.InitVar[int | str]')
+
+    def test_init_var_inheritance(self):
+        # Note that this deliberately tests that a dataclass need not
+        #  have a __post_init__ function if it has an InitVar field.
+        #  It could just be used in a derived class, as shown here.
+        @dataclass
+        class Base:
+            x: int
+            init_base: InitVar[int]
+
+        # We can instantiate by passing the InitVar, even though
+        #  it's not used.
+        b = Base(0, 10)
+        self.assertEqual(vars(b), {'x': 0})
+
+        @dataclass
+        class C(Base):
+            y: int
+            init_derived: InitVar[int]
+
+            def __post_init__(self, init_base, init_derived):
+                self.x = self.x + init_base
+                self.y = self.y + init_derived
+
+        c = C(10, 11, 50, 51)
+        self.assertEqual(vars(c), {'x': 21, 'y': 101})
+
+    def test_default_factory(self):
+        # Test a factory that returns a new list.
+        @dataclass
+        class C:
+            x: int
+            y: list = field(default_factory=list)
+
+        c0 = C(3)
+        c1 = C(3)
+        self.assertEqual(c0.x, 3)
+        self.assertEqual(c0.y, [])
+        self.assertEqual(c0, c1)
+        self.assertIsNot(c0.y, c1.y)
+        self.assertEqual(astuple(C(5, [1])), (5, [1]))
+
+        # Test a factory that returns a shared list.
+        l = []
+        @dataclass
+        class C:
+            x: int
+            y: list = field(default_factory=lambda: l)
+
+        c0 = C(3)
+        c1 = C(3)
+        self.assertEqual(c0.x, 3)
+        self.assertEqual(c0.y, [])
+        self.assertEqual(c0, c1)
+        self.assertIs(c0.y, c1.y)
+        self.assertEqual(astuple(C(5, [1])), (5, [1]))
+
+        # Test various other field flags.
+        # repr
+        @dataclass
+        class C:
+            x: list = field(default_factory=list, repr=False)
+        self.assertEqual(repr(C()), 'TestCase.test_default_factory.<locals>.C()')
+        self.assertEqual(C().x, [])
+
+        # hash
+        @dataclass(unsafe_hash=True)
+        class C:
+            x: list = field(default_factory=list, hash=False)
+        self.assertEqual(astuple(C()), ([],))
+        self.assertEqual(hash(C()), hash(()))
+
+        # init (see also test_default_factory_with_no_init)
+        @dataclass
+        class C:
+            x: list = field(default_factory=list, init=False)
+        self.assertEqual(astuple(C()), ([],))
+
+        # compare
+        @dataclass
+        class C:
+            x: list = field(default_factory=list, compare=False)
+        self.assertEqual(C(), C([1]))
+
+    def test_default_factory_with_no_init(self):
+        # We need a factory with a side effect.
+        factory = Mock()
+
+        @dataclass
+        class C:
+            x: list = field(default_factory=factory, init=False)
+
+        # Make sure the default factory is called for each new instance.
+        C().x
+        self.assertEqual(factory.call_count, 1)
+        C().x
+        self.assertEqual(factory.call_count, 2)
+
+    def test_default_factory_not_called_if_value_given(self):
+        # We need a factory that we can test if it's been called.
+        factory = Mock()
+
+        @dataclass
+        class C:
+            x: int = field(default_factory=factory)
+
+        # Make sure that if a field has a default factory function,
+        #  it's not called if a value is specified.
+        C().x
+        self.assertEqual(factory.call_count, 1)
+        self.assertEqual(C(10).x, 10)
+        self.assertEqual(factory.call_count, 1)
+        C().x
+        self.assertEqual(factory.call_count, 2)
+
+    def test_default_factory_derived(self):
+        # See bpo-32896.
+        @dataclass
+        class Foo:
+            x: dict = field(default_factory=dict)
+
+        @dataclass
+        class Bar(Foo):
+            y: int = 1
+
+        self.assertEqual(Foo().x, {})
+        self.assertEqual(Bar().x, {})
+        self.assertEqual(Bar().y, 1)
+
+        @dataclass
+        class Baz(Foo):
+            pass
+        self.assertEqual(Baz().x, {})
+
+    def test_intermediate_non_dataclass(self):
+        # Test that an intermediate class that defines
+        #  annotations does not define fields.
+
+        @dataclass
+        class A:
+            x: int
+
+        class B(A):
+            y: int
+
+        @dataclass
+        class C(B):
+            z: int
+
+        c = C(1, 3)
+        self.assertEqual((c.x, c.z), (1, 3))
+
+        # .y was not initialized.
+        with self.assertRaisesRegex(AttributeError,
+                                    'object has no attribute'):
+            c.y
+
+        # And if we again derive a non-dataclass, no fields are added.
+        class D(C):
+            t: int
+        d = D(4, 5)
+        self.assertEqual((d.x, d.z), (4, 5))
+
+    def test_classvar_default_factory(self):
+        # It's an error for a ClassVar to have a factory function.
+        with self.assertRaisesRegex(TypeError,
+                                    'cannot have a default factory'):
+            @dataclass
+            class C:
+                x: ClassVar[int] = field(default_factory=int)
+
+    def test_is_dataclass(self):
+        class NotDataClass:
+            pass
+
+        self.assertFalse(is_dataclass(0))
+        self.assertFalse(is_dataclass(int))
+        self.assertFalse(is_dataclass(NotDataClass))
+        self.assertFalse(is_dataclass(NotDataClass()))
+
+        @dataclass
+        class C:
+            x: int
+
+        @dataclass
+        class D:
+            d: C
+            e: int
+
+        c = C(10)
+        d = D(c, 4)
+
+        self.assertTrue(is_dataclass(C))
+        self.assertTrue(is_dataclass(c))
+        self.assertFalse(is_dataclass(c.x))
+        self.assertTrue(is_dataclass(d.d))
+        self.assertFalse(is_dataclass(d.e))
+
+    def test_is_dataclass_when_getattr_always_returns(self):
+        # See bpo-37868.
+        class A:
+            def __getattr__(self, key):
+                return 0
+        self.assertFalse(is_dataclass(A))
+        a = A()
+
+        # Also test for an instance attribute.
+        class B:
+            pass
+        b = B()
+        b.__dataclass_fields__ = []
+
+        for obj in a, b:
+            with self.subTest(obj=obj):
+                self.assertFalse(is_dataclass(obj))
+
+                # Indirect tests for _is_dataclass_instance().
+                with self.assertRaisesRegex(TypeError, 'should be called on dataclass instances'):
+                    asdict(obj)
+                with self.assertRaisesRegex(TypeError, 'should be called on dataclass instances'):
+                    astuple(obj)
+                with self.assertRaisesRegex(TypeError, 'should be called on dataclass instances'):
+                    replace(obj, x=0)
+
+    def test_is_dataclass_genericalias(self):
+        @dataclass
+        class A(types.GenericAlias):
+            origin: type
+            args: type
+        self.assertTrue(is_dataclass(A))
+        a = A(list, int)
+        self.assertTrue(is_dataclass(type(a)))
+        self.assertTrue(is_dataclass(a))
+
+
+    def test_helper_fields_with_class_instance(self):
+        # Check that we can call fields() on either a class or instance,
+        #  and get back the same thing.
+        @dataclass
+        class C:
+            x: int
+            y: float
+
+        self.assertEqual(fields(C), fields(C(0, 0.0)))
+
+    def test_helper_fields_exception(self):
+        # Check that TypeError is raised if not passed a dataclass or
+        #  instance.
+        with self.assertRaisesRegex(TypeError, 'dataclass type or instance'):
+            fields(0)
+
+        class C: pass
+        with self.assertRaisesRegex(TypeError, 'dataclass type or instance'):
+            fields(C)
+        with self.assertRaisesRegex(TypeError, 'dataclass type or instance'):
+            fields(C())
+
+    def test_clean_traceback_from_fields_exception(self):
+        stdout = io.StringIO()
+        try:
+            fields(object)
+        except TypeError as exc:
+            traceback.print_exception(exc, file=stdout)
+        printed_traceback = stdout.getvalue()
+        self.assertNotIn("AttributeError", printed_traceback)
+        self.assertNotIn("__dataclass_fields__", printed_traceback)
+
+    def test_helper_asdict(self):
+        # Basic tests for asdict(), it should return a new dictionary.
+        @dataclass
+        class C:
+            x: int
+            y: int
+        c = C(1, 2)
+
+        self.assertEqual(asdict(c), {'x': 1, 'y': 2})
+        self.assertEqual(asdict(c), asdict(c))
+        self.assertIsNot(asdict(c), asdict(c))
+        c.x = 42
+        self.assertEqual(asdict(c), {'x': 42, 'y': 2})
+        self.assertIs(type(asdict(c)), dict)
+
+    def test_helper_asdict_raises_on_classes(self):
+        # asdict() should raise on a class object.
+        @dataclass
+        class C:
+            x: int
+            y: int
+        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
+            asdict(C)
+        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
+            asdict(int)
+
+    def test_helper_asdict_copy_values(self):
+        @dataclass
+        class C:
+            x: int
+            y: List[int] = field(default_factory=list)
+        initial = []
+        c = C(1, initial)
+        d = asdict(c)
+        self.assertEqual(d['y'], initial)
+        self.assertIsNot(d['y'], initial)
+        c = C(1)
+        d = asdict(c)
+        d['y'].append(1)
+        self.assertEqual(c.y, [])
+
+    def test_helper_asdict_nested(self):
+        @dataclass
+        class UserId:
+            token: int
+            group: int
+        @dataclass
+        class User:
+            name: str
+            id: UserId
+        u = User('Joe', UserId(123, 1))
+        d = asdict(u)
+        self.assertEqual(d, {'name': 'Joe', 'id': {'token': 123, 'group': 1}})
+        self.assertIsNot(asdict(u), asdict(u))
+        u.id.group = 2
+        self.assertEqual(asdict(u), {'name': 'Joe',
+                                     'id': {'token': 123, 'group': 2}})
+
+    def test_helper_asdict_builtin_containers(self):
+        @dataclass
+        class User:
+            name: str
+            id: int
+        @dataclass
+        class GroupList:
+            id: int
+            users: List[User]
+        @dataclass
+        class GroupTuple:
+            id: int
+            users: Tuple[User, ...]
+        @dataclass
+        class GroupDict:
+            id: int
+            users: Dict[str, User]
+        a = User('Alice', 1)
+        b = User('Bob', 2)
+        gl = GroupList(0, [a, b])
+        gt = GroupTuple(0, (a, b))
+        gd = GroupDict(0, {'first': a, 'second': b})
+        self.assertEqual(asdict(gl), {'id': 0, 'users': [{'name': 'Alice', 'id': 1},
+                                                         {'name': 'Bob', 'id': 2}]})
+        self.assertEqual(asdict(gt), {'id': 0, 'users': ({'name': 'Alice', 'id': 1},
+                                                         {'name': 'Bob', 'id': 2})})
+        self.assertEqual(asdict(gd), {'id': 0, 'users': {'first': {'name': 'Alice', 'id': 1},
+                                                         'second': {'name': 'Bob', 'id': 2}}})
+
+    def test_helper_asdict_builtin_object_containers(self):
+        @dataclass
+        class Child:
+            d: object
+
+        @dataclass
+        class Parent:
+            child: Child
+
+        self.assertEqual(asdict(Parent(Child([1]))), {'child': {'d': [1]}})
+        self.assertEqual(asdict(Parent(Child({1: 2}))), {'child': {'d': {1: 2}}})
+
+    def test_helper_asdict_factory(self):
+        @dataclass
+        class C:
+            x: int
+            y: int
+        c = C(1, 2)
+        d = asdict(c, dict_factory=OrderedDict)
+        self.assertEqual(d, OrderedDict([('x', 1), ('y', 2)]))
+        self.assertIsNot(d, asdict(c, dict_factory=OrderedDict))
+        c.x = 42
+        d = asdict(c, dict_factory=OrderedDict)
+        self.assertEqual(d, OrderedDict([('x', 42), ('y', 2)]))
+        self.assertIs(type(d), OrderedDict)
+
+    def test_helper_asdict_namedtuple(self):
+        T = namedtuple('T', 'a b c')
+        @dataclass
+        class C:
+            x: str
+            y: T
+        c = C('outer', T(1, C('inner', T(11, 12, 13)), 2))
+
+        d = asdict(c)
+        self.assertEqual(d, {'x': 'outer',
+                             'y': T(1,
+                                    {'x': 'inner',
+                                     'y': T(11, 12, 13)},
+                                    2),
+                             }
+                         )
+
+        # Now with a dict_factory.  OrderedDict is convenient, but
+        # since it compares to dicts, we also need to have separate
+        # assertIs tests.
+        d = asdict(c, dict_factory=OrderedDict)
+        self.assertEqual(d, {'x': 'outer',
+                             'y': T(1,
+                                    {'x': 'inner',
+                                     'y': T(11, 12, 13)},
+                                    2),
+                             }
+                         )
+
+        # Make sure that the returned dicts are actually OrderedDicts.
+        self.assertIs(type(d), OrderedDict)
+        self.assertIs(type(d['y'][1]), OrderedDict)
+
+    def test_helper_asdict_namedtuple_key(self):
+        # Ensure that a field that contains a dict which has a
+        # namedtuple as a key works with asdict().
+
+        @dataclass
+        class C:
+            f: dict
+        T = namedtuple('T', 'a')
+
+        c = C({T('an a'): 0})
+
+        self.assertEqual(asdict(c), {'f': {T(a='an a'): 0}})
+
+    def test_helper_asdict_namedtuple_derived(self):
+        class T(namedtuple('Tbase', 'a')):
+            def my_a(self):
+                return self.a
+
+        @dataclass
+        class C:
+            f: T
+
+        t = T(6)
+        c = C(t)
+
+        d = asdict(c)
+        self.assertEqual(d, {'f': T(a=6)})
+        # Make sure that t has been copied, not used directly.
+        self.assertIsNot(d['f'], t)
+        self.assertEqual(d['f'].my_a(), 6)
+
+    def test_helper_asdict_defaultdict(self):
+        # Ensure asdict() does not throw exceptions when a
+        # defaultdict is a member of a dataclass
+        @dataclass
+        class C:
+            mp: DefaultDict[str, List]
+
+        dd = defaultdict(list)
+        dd["x"].append(12)
+        c = C(mp=dd)
+        d = asdict(c)
+
+        self.assertEqual(d, {"mp": {"x": [12]}})
+        self.assertTrue(d["mp"] is not c.mp)  # make sure defaultdict is copied
+
+    def test_helper_astuple(self):
+        # Basic tests for astuple(), it should return a new tuple.
+        @dataclass
+        class C:
+            x: int
+            y: int = 0
+        c = C(1)
+
+        self.assertEqual(astuple(c), (1, 0))
+        self.assertEqual(astuple(c), astuple(c))
+        self.assertIsNot(astuple(c), astuple(c))
+        c.y = 42
+        self.assertEqual(astuple(c), (1, 42))
+        self.assertIs(type(astuple(c)), tuple)
+
+    def test_helper_astuple_raises_on_classes(self):
+        # astuple() should raise on a class object.
+        @dataclass
+        class C:
+            x: int
+            y: int
+        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
+            astuple(C)
+        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
+            astuple(int)
+
+    def test_helper_astuple_copy_values(self):
+        @dataclass
+        class C:
+            x: int
+            y: List[int] = field(default_factory=list)
+        initial = []
+        c = C(1, initial)
+        t = astuple(c)
+        self.assertEqual(t[1], initial)
+        self.assertIsNot(t[1], initial)
+        c = C(1)
+        t = astuple(c)
+        t[1].append(1)
+        self.assertEqual(c.y, [])
+
+    def test_helper_astuple_nested(self):
+        @dataclass
+        class UserId:
+            token: int
+            group: int
+        @dataclass
+        class User:
+            name: str
+            id: UserId
+        u = User('Joe', UserId(123, 1))
+        t = astuple(u)
+        self.assertEqual(t, ('Joe', (123, 1)))
+        self.assertIsNot(astuple(u), astuple(u))
+        u.id.group = 2
+        self.assertEqual(astuple(u), ('Joe', (123, 2)))
+
+    def test_helper_astuple_builtin_containers(self):
+        @dataclass
+        class User:
+            name: str
+            id: int
+        @dataclass
+        class GroupList:
+            id: int
+            users: List[User]
+        @dataclass
+        class GroupTuple:
+            id: int
+            users: Tuple[User, ...]
+        @dataclass
+        class GroupDict:
+            id: int
+            users: Dict[str, User]
+        a = User('Alice', 1)
+        b = User('Bob', 2)
+        gl = GroupList(0, [a, b])
+        gt = GroupTuple(0, (a, b))
+        gd = GroupDict(0, {'first': a, 'second': b})
+        self.assertEqual(astuple(gl), (0, [('Alice', 1), ('Bob', 2)]))
+        self.assertEqual(astuple(gt), (0, (('Alice', 1), ('Bob', 2))))
+        self.assertEqual(astuple(gd), (0, {'first': ('Alice', 1), 'second': ('Bob', 2)}))
+
+    def test_helper_astuple_builtin_object_containers(self):
+        @dataclass
+        class Child:
+            d: object
+
+        @dataclass
+        class Parent:
+            child: Child
+
+        self.assertEqual(astuple(Parent(Child([1]))), (([1],),))
+        self.assertEqual(astuple(Parent(Child({1: 2}))), (({1: 2},),))
+
+    def test_helper_astuple_factory(self):
+        @dataclass
+        class C:
+            x: int
+            y: int
+        NT = namedtuple('NT', 'x y')
+        def nt(lst):
+            return NT(*lst)
+        c = C(1, 2)
+        t = astuple(c, tuple_factory=nt)
+        self.assertEqual(t, NT(1, 2))
+        self.assertIsNot(t, astuple(c, tuple_factory=nt))
+        c.x = 42
+        t = astuple(c, tuple_factory=nt)
+        self.assertEqual(t, NT(42, 2))
+        self.assertIs(type(t), NT)
+
+    def test_helper_astuple_namedtuple(self):
+        T = namedtuple('T', 'a b c')
+        @dataclass
+        class C:
+            x: str
+            y: T
+        c = C('outer', T(1, C('inner', T(11, 12, 13)), 2))
+
+        t = astuple(c)
+        self.assertEqual(t, ('outer', T(1, ('inner', (11, 12, 13)), 2)))
+
+        # Now, using a tuple_factory.  list is convenient here.
+        t = astuple(c, tuple_factory=list)
+        self.assertEqual(t, ['outer', T(1, ['inner', T(11, 12, 13)], 2)])
+
+    def test_helper_astuple_defaultdict(self):
+        # Ensure astuple() does not throw exceptions when a
+        # defaultdict is a member of a dataclass
+        @dataclass
+        class C:
+            mp: DefaultDict[str, List]
+
+        dd = defaultdict(list)
+        dd["x"].append(12)
+        c = C(mp=dd)
+        t = astuple(c)
+
+        self.assertEqual(t, ({"x": [12]},))
+        self.assertTrue(t[0] is not dd) # make sure defaultdict is copied
+
+    def test_dynamic_class_creation(self):
+        cls_dict = {'__annotations__': {'x': int, 'y': int},
+                    }
+
+        # Create the class.
+        cls = type('C', (), cls_dict)
+
+        # Make it a dataclass.
+        cls1 = dataclass(cls)
+
+        self.assertEqual(cls1, cls)
+        self.assertEqual(asdict(cls(1, 2)), {'x': 1, 'y': 2})
+
+    def test_dynamic_class_creation_using_field(self):
+        cls_dict = {'__annotations__': {'x': int, 'y': int},
+                    'y': field(default=5),
+                    }
+
+        # Create the class.
+        cls = type('C', (), cls_dict)
+
+        # Make it a dataclass.
+        cls1 = dataclass(cls)
+
+        self.assertEqual(cls1, cls)
+        self.assertEqual(asdict(cls1(1)), {'x': 1, 'y': 5})
+
+    def test_init_in_order(self):
+        @dataclass
+        class C:
+            a: int
+            b: int = field()
+            c: list = field(default_factory=list, init=False)
+            d: list = field(default_factory=list)
+            e: int = field(default=4, init=False)
+            f: int = 4
+
+        calls = []
+        def setattr(self, name, value):
+            calls.append((name, value))
+
+        C.__setattr__ = setattr
+        c = C(0, 1)
+        self.assertEqual(('a', 0), calls[0])
+        self.assertEqual(('b', 1), calls[1])
+        self.assertEqual(('c', []), calls[2])
+        self.assertEqual(('d', []), calls[3])
+        self.assertNotIn(('e', 4), calls)
+        self.assertEqual(('f', 4), calls[4])
+
+    def test_items_in_dicts(self):
+        @dataclass
+        class C:
+            a: int
+            b: list = field(default_factory=list, init=False)
+            c: list = field(default_factory=list)
+            d: int = field(default=4, init=False)
+            e: int = 0
+
+        c = C(0)
+        # Class dict
+        self.assertNotIn('a', C.__dict__)
+        self.assertNotIn('b', C.__dict__)
+        self.assertNotIn('c', C.__dict__)
+        self.assertIn('d', C.__dict__)
+        self.assertEqual(C.d, 4)
+        self.assertIn('e', C.__dict__)
+        self.assertEqual(C.e, 0)
+        # Instance dict
+        self.assertIn('a', c.__dict__)
+        self.assertEqual(c.a, 0)
+        self.assertIn('b', c.__dict__)
+        self.assertEqual(c.b, [])
+        self.assertIn('c', c.__dict__)
+        self.assertEqual(c.c, [])
+        self.assertNotIn('d', c.__dict__)
+        self.assertIn('e', c.__dict__)
+        self.assertEqual(c.e, 0)
+
+    def test_alternate_classmethod_constructor(self):
+        # Since __post_init__ can't take params, use a classmethod
+        #  alternate constructor.  This is mostly an example to show
+        #  how to use this technique.
+        @dataclass
+        class C:
+            x: int
+            @classmethod
+            def from_file(cls, filename):
+                # In a real example, create a new instance
+                #  and populate 'x' from contents of a file.
+                value_in_file = 20
+                return cls(value_in_file)
+
+        self.assertEqual(C.from_file('filename').x, 20)
+
+    def test_field_metadata_default(self):
+        # Make sure the default metadata is read-only and of
+        #  zero length.
+        @dataclass
+        class C:
+            i: int
+
+        self.assertFalse(fields(C)[0].metadata)
+        self.assertEqual(len(fields(C)[0].metadata), 0)
+        with self.assertRaisesRegex(TypeError,
+                                    'does not support item assignment'):
+            fields(C)[0].metadata['test'] = 3
+
+    def test_field_metadata_mapping(self):
+        # Make sure only a mapping can be passed as metadata
+        #  zero length.
+        with self.assertRaises(TypeError):
+            @dataclass
+            class C:
+                i: int = field(metadata=0)
+
+        # Make sure an empty dict works.
+        d = {}
+        @dataclass
+        class C:
+            i: int = field(metadata=d)
+        self.assertFalse(fields(C)[0].metadata)
+        self.assertEqual(len(fields(C)[0].metadata), 0)
+        # Update should work (see bpo-35960).
+        d['foo'] = 1
+        self.assertEqual(len(fields(C)[0].metadata), 1)
+        self.assertEqual(fields(C)[0].metadata['foo'], 1)
+        with self.assertRaisesRegex(TypeError,
+                                    'does not support item assignment'):
+            fields(C)[0].metadata['test'] = 3
+
+        # Make sure a non-empty dict works.
+        d = {'test': 10, 'bar': '42', 3: 'three'}
+        @dataclass
+        class C:
+            i: int = field(metadata=d)
+        self.assertEqual(len(fields(C)[0].metadata), 3)
+        self.assertEqual(fields(C)[0].metadata['test'], 10)
+        self.assertEqual(fields(C)[0].metadata['bar'], '42')
+        self.assertEqual(fields(C)[0].metadata[3], 'three')
+        # Update should work.
+        d['foo'] = 1
+        self.assertEqual(len(fields(C)[0].metadata), 4)
+        self.assertEqual(fields(C)[0].metadata['foo'], 1)
+        with self.assertRaises(KeyError):
+            # Non-existent key.
+            fields(C)[0].metadata['baz']
+        with self.assertRaisesRegex(TypeError,
+                                    'does not support item assignment'):
+            fields(C)[0].metadata['test'] = 3
+
+    def test_field_metadata_custom_mapping(self):
+        # Try a custom mapping.
+        class SimpleNameSpace:
+            def __init__(self, **kw):
+                self.__dict__.update(kw)
+
+            def __getitem__(self, item):
+                if item == 'xyzzy':
+                    return 'plugh'
+                return getattr(self, item)
+
+            def __len__(self):
+                return self.__dict__.__len__()
+
+        @dataclass
+        class C:
+            i: int = field(metadata=SimpleNameSpace(a=10))
+
+        self.assertEqual(len(fields(C)[0].metadata), 1)
+        self.assertEqual(fields(C)[0].metadata['a'], 10)
+        with self.assertRaises(AttributeError):
+            fields(C)[0].metadata['b']
+        # Make sure we're still talking to our custom mapping.
+        self.assertEqual(fields(C)[0].metadata['xyzzy'], 'plugh')
+
+    def test_generic_dataclasses(self):
+        T = TypeVar('T')
+
+        @dataclass
+        class LabeledBox(Generic[T]):
+            content: T
+            label: str = '<unknown>'
+
+        box = LabeledBox(42)
+        self.assertEqual(box.content, 42)
+        self.assertEqual(box.label, '<unknown>')
+
+        # Subscripting the resulting class should work, etc.
+        Alias = List[LabeledBox[int]]
+
+    def test_generic_extending(self):
+        S = TypeVar('S')
+        T = TypeVar('T')
+
+        @dataclass
+        class Base(Generic[T, S]):
+            x: T
+            y: S
+
+        @dataclass
+        class DataDerived(Base[int, T]):
+            new_field: str
+        Alias = DataDerived[str]
+        c = Alias(0, 'test1', 'test2')
+        self.assertEqual(astuple(c), (0, 'test1', 'test2'))
+
+        class NonDataDerived(Base[int, T]):
+            def new_method(self):
+                return self.y
+        Alias = NonDataDerived[float]
+        c = Alias(10, 1.0)
+        self.assertEqual(c.new_method(), 1.0)
+
+    def test_generic_dynamic(self):
+        T = TypeVar('T')
+
+        @dataclass
+        class Parent(Generic[T]):
+            x: T
+        Child = make_dataclass('Child', [('y', T), ('z', Optional[T], None)],
+                               bases=(Parent[int], Generic[T]), namespace={'other': 42})
+        self.assertIs(Child[int](1, 2).z, None)
+        self.assertEqual(Child[int](1, 2, 3).z, 3)
+        self.assertEqual(Child[int](1, 2, 3).other, 42)
+        # Check that type aliases work correctly.
+        Alias = Child[T]
+        self.assertEqual(Alias[int](1, 2).x, 1)
+        # Check MRO resolution.
+        self.assertEqual(Child.__mro__, (Child, Parent, Generic, object))
+
+    def test_dataclasses_pickleable(self):
+        global P, Q, R
+        @dataclass
+        class P:
+            x: int
+            y: int = 0
+        @dataclass
+        class Q:
+            x: int
+            y: int = field(default=0, init=False)
+        @dataclass
+        class R:
+            x: int
+            y: List[int] = field(default_factory=list)
+        q = Q(1)
+        q.y = 2
+        samples = [P(1), P(1, 2), Q(1), q, R(1), R(1, [2, 3, 4])]
+        for sample in samples:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(sample=sample, proto=proto):
+                    new_sample = pickle.loads(pickle.dumps(sample, proto))
+                    self.assertEqual(sample.x, new_sample.x)
+                    self.assertEqual(sample.y, new_sample.y)
+                    self.assertIsNot(sample, new_sample)
+                    new_sample.x = 42
+                    another_new_sample = pickle.loads(pickle.dumps(new_sample, proto))
+                    self.assertEqual(new_sample.x, another_new_sample.x)
+                    self.assertEqual(sample.y, another_new_sample.y)
+
+    def test_dataclasses_qualnames(self):
+        @dataclass(order=True, unsafe_hash=True, frozen=True)
+        class A:
+            x: int
+            y: int
+
+        self.assertEqual(A.__init__.__name__, "__init__")
+        for function in (
+            '__eq__',
+            '__lt__',
+            '__le__',
+            '__gt__',
+            '__ge__',
+            '__hash__',
+            '__init__',
+            '__repr__',
+            '__setattr__',
+            '__delattr__',
+        ):
+            self.assertEqual(getattr(A, function).__qualname__, f"TestCase.test_dataclasses_qualnames.<locals>.A.{function}")
+
+        with self.assertRaisesRegex(TypeError, r"A\.__init__\(\) missing"):
+            A()
+
+
+class TestFieldNoAnnotation(unittest.TestCase):
+    def test_field_without_annotation(self):
+        with self.assertRaisesRegex(TypeError,
+                                    "'f' is a field but has no type annotation"):
+            @dataclass
+            class C:
+                f = field()
+
+    def test_field_without_annotation_but_annotation_in_base(self):
+        @dataclass
+        class B:
+            f: int
+
+        with self.assertRaisesRegex(TypeError,
+                                    "'f' is a field but has no type annotation"):
+            # This is still an error: make sure we don't pick up the
+            #  type annotation in the base class.
+            @dataclass
+            class C(B):
+                f = field()
+
+    def test_field_without_annotation_but_annotation_in_base_not_dataclass(self):
+        # Same test, but with the base class not a dataclass.
+        class B:
+            f: int
+
+        with self.assertRaisesRegex(TypeError,
+                                    "'f' is a field but has no type annotation"):
+            # This is still an error: make sure we don't pick up the
+            #  type annotation in the base class.
+            @dataclass
+            class C(B):
+                f = field()
+
+
+class TestDocString(unittest.TestCase):
+    def assertDocStrEqual(self, a, b):
+        # Because 3.6 and 3.7 differ in how inspect.signature work
+        #  (see bpo #32108), for the time being just compare them with
+        #  whitespace stripped.
+        self.assertEqual(a.replace(' ', ''), b.replace(' ', ''))
+
+    def test_existing_docstring_not_overridden(self):
+        @dataclass
+        class C:
+            """Lorem ipsum"""
+            x: int
+
+        self.assertEqual(C.__doc__, "Lorem ipsum")
+
+    def test_docstring_no_fields(self):
+        @dataclass
+        class C:
+            pass
+
+        self.assertDocStrEqual(C.__doc__, "C()")
+
+    def test_docstring_one_field(self):
+        @dataclass
+        class C:
+            x: int
+
+        self.assertDocStrEqual(C.__doc__, "C(x:int)")
+
+    def test_docstring_two_fields(self):
+        @dataclass
+        class C:
+            x: int
+            y: int
+
+        self.assertDocStrEqual(C.__doc__, "C(x:int, y:int)")
+
+    def test_docstring_three_fields(self):
+        @dataclass
+        class C:
+            x: int
+            y: int
+            z: str
+
+        self.assertDocStrEqual(C.__doc__, "C(x:int, y:int, z:str)")
+
+    def test_docstring_one_field_with_default(self):
+        @dataclass
+        class C:
+            x: int = 3
+
+        self.assertDocStrEqual(C.__doc__, "C(x:int=3)")
+
+    def test_docstring_one_field_with_default_none(self):
+        @dataclass
+        class C:
+            x: Union[int, type(None)] = None
+
+        self.assertDocStrEqual(C.__doc__, "C(x:Optional[int]=None)")
+
+    def test_docstring_list_field(self):
+        @dataclass
+        class C:
+            x: List[int]
+
+        self.assertDocStrEqual(C.__doc__, "C(x:List[int])")
+
+    def test_docstring_list_field_with_default_factory(self):
+        @dataclass
+        class C:
+            x: List[int] = field(default_factory=list)
+
+        self.assertDocStrEqual(C.__doc__, "C(x:List[int]=<factory>)")
+
+    def test_docstring_deque_field(self):
+        @dataclass
+        class C:
+            x: deque
+
+        self.assertDocStrEqual(C.__doc__, "C(x:collections.deque)")
+
+    def test_docstring_deque_field_with_default_factory(self):
+        @dataclass
+        class C:
+            x: deque = field(default_factory=deque)
+
+        self.assertDocStrEqual(C.__doc__, "C(x:collections.deque=<factory>)")
+
+    def test_docstring_with_no_signature(self):
+        # See https://github.com/python/cpython/issues/103449
+        class Meta(type):
+            __call__ = dict
+        class Base(metaclass=Meta):
+            pass
+
+        @dataclass
+        class C(Base):
+            pass
+
+        self.assertDocStrEqual(C.__doc__, "C")
+
+
+class TestInit(unittest.TestCase):
+    def test_base_has_init(self):
+        class B:
+            def __init__(self):
+                self.z = 100
+
+        # Make sure that declaring this class doesn't raise an error.
+        #  The issue is that we can't override __init__ in our class,
+        #  but it should be okay to add __init__ to us if our base has
+        #  an __init__.
+        @dataclass
+        class C(B):
+            x: int = 0
+        c = C(10)
+        self.assertEqual(c.x, 10)
+        self.assertNotIn('z', vars(c))
+
+        # Make sure that if we don't add an init, the base __init__
+        #  gets called.
+        @dataclass(init=False)
+        class C(B):
+            x: int = 10
+        c = C()
+        self.assertEqual(c.x, 10)
+        self.assertEqual(c.z, 100)
+
+    def test_no_init(self):
+        @dataclass(init=False)
+        class C:
+            i: int = 0
+        self.assertEqual(C().i, 0)
+
+        @dataclass(init=False)
+        class C:
+            i: int = 2
+            def __init__(self):
+                self.i = 3
+        self.assertEqual(C().i, 3)
+
+    def test_overwriting_init(self):
+        # If the class has __init__, use it no matter the value of
+        #  init=.
+
+        @dataclass
+        class C:
+            x: int
+            def __init__(self, x):
+                self.x = 2 * x
+        self.assertEqual(C(3).x, 6)
+
+        @dataclass(init=True)
+        class C:
+            x: int
+            def __init__(self, x):
+                self.x = 2 * x
+        self.assertEqual(C(4).x, 8)
+
+        @dataclass(init=False)
+        class C:
+            x: int
+            def __init__(self, x):
+                self.x = 2 * x
+        self.assertEqual(C(5).x, 10)
+
+    def test_inherit_from_protocol(self):
+        # Dataclasses inheriting from protocol should preserve their own `__init__`.
+        # See bpo-45081.
+
+        class P(Protocol):
+            a: int
+
+        @dataclass
+        class C(P):
+            a: int
+
+        self.assertEqual(C(5).a, 5)
+
+        @dataclass
+        class D(P):
+            def __init__(self, a):
+                self.a = a * 2
+
+        self.assertEqual(D(5).a, 10)
+
+
+class TestRepr(unittest.TestCase):
+    def test_repr(self):
+        @dataclass
+        class B:
+            x: int
+
+        @dataclass
+        class C(B):
+            y: int = 10
+
+        o = C(4)
+        self.assertEqual(repr(o), 'TestRepr.test_repr.<locals>.C(x=4, y=10)')
+
+        @dataclass
+        class D(C):
+            x: int = 20
+        self.assertEqual(repr(D()), 'TestRepr.test_repr.<locals>.D(x=20, y=10)')
+
+        @dataclass
+        class C:
+            @dataclass
+            class D:
+                i: int
+            @dataclass
+            class E:
+                pass
+        self.assertEqual(repr(C.D(0)), 'TestRepr.test_repr.<locals>.C.D(i=0)')
+        self.assertEqual(repr(C.E()), 'TestRepr.test_repr.<locals>.C.E()')
+
+    def test_no_repr(self):
+        # Test a class with no __repr__ and repr=False.
+        @dataclass(repr=False)
+        class C:
+            x: int
+        self.assertIn(f'{__name__}.TestRepr.test_no_repr.<locals>.C object at',
+                      repr(C(3)))
+
+        # Test a class with a __repr__ and repr=False.
+        @dataclass(repr=False)
+        class C:
+            x: int
+            def __repr__(self):
+                return 'C-class'
+        self.assertEqual(repr(C(3)), 'C-class')
+
+    def test_overwriting_repr(self):
+        # If the class has __repr__, use it no matter the value of
+        #  repr=.
+
+        @dataclass
+        class C:
+            x: int
+            def __repr__(self):
+                return 'x'
+        self.assertEqual(repr(C(0)), 'x')
+
+        @dataclass(repr=True)
+        class C:
+            x: int
+            def __repr__(self):
+                return 'x'
+        self.assertEqual(repr(C(0)), 'x')
+
+        @dataclass(repr=False)
+        class C:
+            x: int
+            def __repr__(self):
+                return 'x'
+        self.assertEqual(repr(C(0)), 'x')
+
+
+class TestEq(unittest.TestCase):
+    def test_no_eq(self):
+        # Test a class with no __eq__ and eq=False.
+        @dataclass(eq=False)
+        class C:
+            x: int
+        self.assertNotEqual(C(0), C(0))
+        c = C(3)
+        self.assertEqual(c, c)
+
+        # Test a class with an __eq__ and eq=False.
+        @dataclass(eq=False)
+        class C:
+            x: int
+            def __eq__(self, other):
+                return other == 10
+        self.assertEqual(C(3), 10)
+
+    def test_overwriting_eq(self):
+        # If the class has __eq__, use it no matter the value of
+        #  eq=.
+
+        @dataclass
+        class C:
+            x: int
+            def __eq__(self, other):
+                return other == 3
+        self.assertEqual(C(1), 3)
+        self.assertNotEqual(C(1), 1)
+
+        @dataclass(eq=True)
+        class C:
+            x: int
+            def __eq__(self, other):
+                return other == 4
+        self.assertEqual(C(1), 4)
+        self.assertNotEqual(C(1), 1)
+
+        @dataclass(eq=False)
+        class C:
+            x: int
+            def __eq__(self, other):
+                return other == 5
+        self.assertEqual(C(1), 5)
+        self.assertNotEqual(C(1), 1)
+
+
+class TestOrdering(unittest.TestCase):
+    def test_functools_total_ordering(self):
+        # Test that functools.total_ordering works with this class.
+        @total_ordering
+        @dataclass
+        class C:
+            x: int
+            def __lt__(self, other):
+                # Perform the test "backward", just to make
+                #  sure this is being called.
+                return self.x >= other
+
+        self.assertLess(C(0), -1)
+        self.assertLessEqual(C(0), -1)
+        self.assertGreater(C(0), 1)
+        self.assertGreaterEqual(C(0), 1)
+
+    def test_no_order(self):
+        # Test that no ordering functions are added by default.
+        @dataclass(order=False)
+        class C:
+            x: int
+        # Make sure no order methods are added.
+        self.assertNotIn('__le__', C.__dict__)
+        self.assertNotIn('__lt__', C.__dict__)
+        self.assertNotIn('__ge__', C.__dict__)
+        self.assertNotIn('__gt__', C.__dict__)
+
+        # Test that __lt__ is still called
+        @dataclass(order=False)
+        class C:
+            x: int
+            def __lt__(self, other):
+                return False
+        # Make sure other methods aren't added.
+        self.assertNotIn('__le__', C.__dict__)
+        self.assertNotIn('__ge__', C.__dict__)
+        self.assertNotIn('__gt__', C.__dict__)
+
+    def test_overwriting_order(self):
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __lt__'
+                                    '.*using functools.total_ordering'):
+            @dataclass(order=True)
+            class C:
+                x: int
+                def __lt__(self):
+                    pass
+
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __le__'
+                                    '.*using functools.total_ordering'):
+            @dataclass(order=True)
+            class C:
+                x: int
+                def __le__(self):
+                    pass
+
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __gt__'
+                                    '.*using functools.total_ordering'):
+            @dataclass(order=True)
+            class C:
+                x: int
+                def __gt__(self):
+                    pass
+
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __ge__'
+                                    '.*using functools.total_ordering'):
+            @dataclass(order=True)
+            class C:
+                x: int
+                def __ge__(self):
+                    pass
+
+class TestHash(unittest.TestCase):
+    def test_unsafe_hash(self):
+        @dataclass(unsafe_hash=True)
+        class C:
+            x: int
+            y: str
+        self.assertEqual(hash(C(1, 'foo')), hash((1, 'foo')))
+
+    def test_hash_rules(self):
+        def non_bool(value):
+            # Map to something else that's True, but not a bool.
+            if value is None:
+                return None
+            if value:
+                return (3,)
+            return 0
+
+        def test(case, unsafe_hash, eq, frozen, with_hash, result):
+            with self.subTest(case=case, unsafe_hash=unsafe_hash, eq=eq,
+                              frozen=frozen):
+                if result != 'exception':
+                    if with_hash:
+                        @dataclass(unsafe_hash=unsafe_hash, eq=eq, frozen=frozen)
+                        class C:
+                            def __hash__(self):
+                                return 0
+                    else:
+                        @dataclass(unsafe_hash=unsafe_hash, eq=eq, frozen=frozen)
+                        class C:
+                            pass
+
+                # See if the result matches what's expected.
+                if result == 'fn':
+                    # __hash__ contains the function we generated.
+                    self.assertIn('__hash__', C.__dict__)
+                    self.assertIsNotNone(C.__dict__['__hash__'])
+
+                elif result == '':
+                    # __hash__ is not present in our class.
+                    if not with_hash:
+                        self.assertNotIn('__hash__', C.__dict__)
+
+                elif result == 'none':
+                    # __hash__ is set to None.
+                    self.assertIn('__hash__', C.__dict__)
+                    self.assertIsNone(C.__dict__['__hash__'])
+
+                elif result == 'exception':
+                    # Creating the class should cause an exception.
+                    #  This only happens with with_hash==True.
+                    assert(with_hash)
+                    with self.assertRaisesRegex(TypeError, 'Cannot overwrite attribute __hash__'):
+                        @dataclass(unsafe_hash=unsafe_hash, eq=eq, frozen=frozen)
+                        class C:
+                            def __hash__(self):
+                                return 0
+
+                else:
+                    assert False, f'unknown result {result!r}'
+
+        # There are 8 cases of:
+        #  unsafe_hash=True/False
+        #  eq=True/False
+        #  frozen=True/False
+        # And for each of these, a different result if
+        #  __hash__ is defined or not.
+        for case, (unsafe_hash,  eq,    frozen, res_no_defined_hash, res_defined_hash) in enumerate([
+                  (False,        False, False,  '',                  ''),
+                  (False,        False, True,   '',                  ''),
+                  (False,        True,  False,  'none',              ''),
+                  (False,        True,  True,   'fn',                ''),
+                  (True,         False, False,  'fn',                'exception'),
+                  (True,         False, True,   'fn',                'exception'),
+                  (True,         True,  False,  'fn',                'exception'),
+                  (True,         True,  True,   'fn',                'exception'),
+                  ], 1):
+            test(case, unsafe_hash, eq, frozen, False, res_no_defined_hash)
+            test(case, unsafe_hash, eq, frozen, True,  res_defined_hash)
+
+            # Test non-bool truth values, too.  This is just to
+            #  make sure the data-driven table in the decorator
+            #  handles non-bool values.
+            test(case, non_bool(unsafe_hash), non_bool(eq), non_bool(frozen), False, res_no_defined_hash)
+            test(case, non_bool(unsafe_hash), non_bool(eq), non_bool(frozen), True,  res_defined_hash)
+
+
+    def test_eq_only(self):
+        # If a class defines __eq__, __hash__ is automatically added
+        #  and set to None.  This is normal Python behavior, not
+        #  related to dataclasses.  Make sure we don't interfere with
+        #  that (see bpo=32546).
+
+        @dataclass
+        class C:
+            i: int
+            def __eq__(self, other):
+                return self.i == other.i
+        self.assertEqual(C(1), C(1))
+        self.assertNotEqual(C(1), C(4))
+
+        # And make sure things work in this case if we specify
+        #  unsafe_hash=True.
+        @dataclass(unsafe_hash=True)
+        class C:
+            i: int
+            def __eq__(self, other):
+                return self.i == other.i
+        self.assertEqual(C(1), C(1.0))
+        self.assertEqual(hash(C(1)), hash(C(1.0)))
+
+        # And check that the classes __eq__ is being used, despite
+        #  specifying eq=True.
+        @dataclass(unsafe_hash=True, eq=True)
+        class C:
+            i: int
+            def __eq__(self, other):
+                return self.i == 3 and self.i == other.i
+        self.assertEqual(C(3), C(3))
+        self.assertNotEqual(C(1), C(1))
+        self.assertEqual(hash(C(1)), hash(C(1.0)))
+
+    def test_0_field_hash(self):
+        @dataclass(frozen=True)
+        class C:
+            pass
+        self.assertEqual(hash(C()), hash(()))
+
+        @dataclass(unsafe_hash=True)
+        class C:
+            pass
+        self.assertEqual(hash(C()), hash(()))
+
+    def test_1_field_hash(self):
+        @dataclass(frozen=True)
+        class C:
+            x: int
+        self.assertEqual(hash(C(4)), hash((4,)))
+        self.assertEqual(hash(C(42)), hash((42,)))
+
+        @dataclass(unsafe_hash=True)
+        class C:
+            x: int
+        self.assertEqual(hash(C(4)), hash((4,)))
+        self.assertEqual(hash(C(42)), hash((42,)))
+
+    def test_hash_no_args(self):
+        # Test dataclasses with no hash= argument.  This exists to
+        #  make sure that if the @dataclass parameter name is changed
+        #  or the non-default hashing behavior changes, the default
+        #  hashability keeps working the same way.
+
+        class Base:
+            def __hash__(self):
+                return 301
+
+        # If frozen or eq is None, then use the default value (do not
+        #  specify any value in the decorator).
+        for frozen, eq,    base,   expected       in [
+            (None,  None,  object, 'unhashable'),
+            (None,  None,  Base,   'unhashable'),
+            (None,  False, object, 'object'),
+            (None,  False, Base,   'base'),
+            (None,  True,  object, 'unhashable'),
+            (None,  True,  Base,   'unhashable'),
+            (False, None,  object, 'unhashable'),
+            (False, None,  Base,   'unhashable'),
+            (False, False, object, 'object'),
+            (False, False, Base,   'base'),
+            (False, True,  object, 'unhashable'),
+            (False, True,  Base,   'unhashable'),
+            (True,  None,  object, 'tuple'),
+            (True,  None,  Base,   'tuple'),
+            (True,  False, object, 'object'),
+            (True,  False, Base,   'base'),
+            (True,  True,  object, 'tuple'),
+            (True,  True,  Base,   'tuple'),
+            ]:
+
+            with self.subTest(frozen=frozen, eq=eq, base=base, expected=expected):
+                # First, create the class.
+                if frozen is None and eq is None:
+                    @dataclass
+                    class C(base):
+                        i: int
+                elif frozen is None:
+                    @dataclass(eq=eq)
+                    class C(base):
+                        i: int
+                elif eq is None:
+                    @dataclass(frozen=frozen)
+                    class C(base):
+                        i: int
+                else:
+                    @dataclass(frozen=frozen, eq=eq)
+                    class C(base):
+                        i: int
+
+                # Now, make sure it hashes as expected.
+                if expected == 'unhashable':
+                    c = C(10)
+                    with self.assertRaisesRegex(TypeError, 'unhashable type'):
+                        hash(c)
+
+                elif expected == 'base':
+                    self.assertEqual(hash(C(10)), 301)
+
+                elif expected == 'object':
+                    # I'm not sure what test to use here.  object's
+                    #  hash isn't based on id(), so calling hash()
+                    #  won't tell us much.  So, just check the
+                    #  function used is object's.
+                    self.assertIs(C.__hash__, object.__hash__)
+
+                elif expected == 'tuple':
+                    self.assertEqual(hash(C(42)), hash((42,)))
+
+                else:
+                    assert False, f'unknown value for expected={expected!r}'
+
+
+class TestFrozen(unittest.TestCase):
+    def test_frozen(self):
+        @dataclass(frozen=True)
+        class C:
+            i: int
+
+        c = C(10)
+        self.assertEqual(c.i, 10)
+        with self.assertRaises(FrozenInstanceError):
+            c.i = 5
+        self.assertEqual(c.i, 10)
+
+    def test_frozen_empty(self):
+        @dataclass(frozen=True)
+        class C:
+            pass
+
+        c = C()
+        self.assertFalse(hasattr(c, 'i'))
+        with self.assertRaises(FrozenInstanceError):
+            c.i = 5
+        self.assertFalse(hasattr(c, 'i'))
+        with self.assertRaises(FrozenInstanceError):
+            del c.i
+
+    def test_inherit(self):
+        @dataclass(frozen=True)
+        class C:
+            i: int
+
+        @dataclass(frozen=True)
+        class D(C):
+            j: int
+
+        d = D(0, 10)
+        with self.assertRaises(FrozenInstanceError):
+            d.i = 5
+        with self.assertRaises(FrozenInstanceError):
+            d.j = 6
+        self.assertEqual(d.i, 0)
+        self.assertEqual(d.j, 10)
+
+    def test_inherit_nonfrozen_from_empty_frozen(self):
+        @dataclass(frozen=True)
+        class C:
+            pass
+
+        with self.assertRaisesRegex(TypeError,
+                                    'cannot inherit non-frozen dataclass from a frozen one'):
+            @dataclass
+            class D(C):
+                j: int
+
+    def test_inherit_frozen_mutliple_inheritance(self):
+        @dataclass
+        class NotFrozen:
+            pass
+
+        @dataclass(frozen=True)
+        class Frozen:
+            pass
+
+        class NotDataclass:
+            pass
+
+        for bases in (
+            (NotFrozen, Frozen),
+            (Frozen, NotFrozen),
+            (Frozen, NotDataclass),
+            (NotDataclass, Frozen),
+        ):
+            with self.subTest(bases=bases):
+                with self.assertRaisesRegex(
+                    TypeError,
+                    'cannot inherit non-frozen dataclass from a frozen one',
+                ):
+                    @dataclass
+                    class NotFrozenChild(*bases):
+                        pass
+
+        for bases in (
+            (NotFrozen, Frozen),
+            (Frozen, NotFrozen),
+            (NotFrozen, NotDataclass),
+            (NotDataclass, NotFrozen),
+        ):
+            with self.subTest(bases=bases):
+                with self.assertRaisesRegex(
+                    TypeError,
+                    'cannot inherit frozen dataclass from a non-frozen one',
+                ):
+                    @dataclass(frozen=True)
+                    class FrozenChild(*bases):
+                        pass
+
+    def test_inherit_frozen_mutliple_inheritance_regular_mixins(self):
+        @dataclass(frozen=True)
+        class Frozen:
+            pass
+
+        class NotDataclass:
+            pass
+
+        class C1(Frozen, NotDataclass):
+            pass
+        self.assertEqual(C1.__mro__, (C1, Frozen, NotDataclass, object))
+
+        class C2(NotDataclass, Frozen):
+            pass
+        self.assertEqual(C2.__mro__, (C2, NotDataclass, Frozen, object))
+
+        @dataclass(frozen=True)
+        class C3(Frozen, NotDataclass):
+            pass
+        self.assertEqual(C3.__mro__, (C3, Frozen, NotDataclass, object))
+
+        @dataclass(frozen=True)
+        class C4(NotDataclass, Frozen):
+            pass
+        self.assertEqual(C4.__mro__, (C4, NotDataclass, Frozen, object))
+
+    def test_multiple_frozen_dataclasses_inheritance(self):
+        @dataclass(frozen=True)
+        class FrozenA:
+            pass
+
+        @dataclass(frozen=True)
+        class FrozenB:
+            pass
+
+        class C1(FrozenA, FrozenB):
+            pass
+        self.assertEqual(C1.__mro__, (C1, FrozenA, FrozenB, object))
+
+        class C2(FrozenB, FrozenA):
+            pass
+        self.assertEqual(C2.__mro__, (C2, FrozenB, FrozenA, object))
+
+        @dataclass(frozen=True)
+        class C3(FrozenA, FrozenB):
+            pass
+        self.assertEqual(C3.__mro__, (C3, FrozenA, FrozenB, object))
+
+        @dataclass(frozen=True)
+        class C4(FrozenB, FrozenA):
+            pass
+        self.assertEqual(C4.__mro__, (C4, FrozenB, FrozenA, object))
+
+    def test_inherit_nonfrozen_from_empty(self):
+        @dataclass
+        class C:
+            pass
+
+        @dataclass
+        class D(C):
+            j: int
+
+        d = D(3)
+        self.assertEqual(d.j, 3)
+        self.assertIsInstance(d, C)
+
+    # Test both ways: with an intermediate normal (non-dataclass)
+    #  class and without an intermediate class.
+    def test_inherit_nonfrozen_from_frozen(self):
+        for intermediate_class in [True, False]:
+            with self.subTest(intermediate_class=intermediate_class):
+                @dataclass(frozen=True)
+                class C:
+                    i: int
+
+                if intermediate_class:
+                    class I(C): pass
+                else:
+                    I = C
+
+                with self.assertRaisesRegex(TypeError,
+                                            'cannot inherit non-frozen dataclass from a frozen one'):
+                    @dataclass
+                    class D(I):
+                        pass
+
+    def test_inherit_frozen_from_nonfrozen(self):
+        for intermediate_class in [True, False]:
+            with self.subTest(intermediate_class=intermediate_class):
+                @dataclass
+                class C:
+                    i: int
+
+                if intermediate_class:
+                    class I(C): pass
+                else:
+                    I = C
+
+                with self.assertRaisesRegex(TypeError,
+                                            'cannot inherit frozen dataclass from a non-frozen one'):
+                    @dataclass(frozen=True)
+                    class D(I):
+                        pass
+
+    def test_inherit_from_normal_class(self):
+        for intermediate_class in [True, False]:
+            with self.subTest(intermediate_class=intermediate_class):
+                class C:
+                    pass
+
+                if intermediate_class:
+                    class I(C): pass
+                else:
+                    I = C
+
+                @dataclass(frozen=True)
+                class D(I):
+                    i: int
+
+            d = D(10)
+            with self.assertRaises(FrozenInstanceError):
+                d.i = 5
+
+    def test_non_frozen_normal_derived(self):
+        # See bpo-32953.
+
+        @dataclass(frozen=True)
+        class D:
+            x: int
+            y: int = 10
+
+        class S(D):
+            pass
+
+        s = S(3)
+        self.assertEqual(s.x, 3)
+        self.assertEqual(s.y, 10)
+        s.cached = True
+
+        # But can't change the frozen attributes.
+        with self.assertRaises(FrozenInstanceError):
+            s.x = 5
+        with self.assertRaises(FrozenInstanceError):
+            s.y = 5
+        self.assertEqual(s.x, 3)
+        self.assertEqual(s.y, 10)
+        self.assertEqual(s.cached, True)
+
+        with self.assertRaises(FrozenInstanceError):
+            del s.x
+        self.assertEqual(s.x, 3)
+        with self.assertRaises(FrozenInstanceError):
+            del s.y
+        self.assertEqual(s.y, 10)
+        del s.cached
+        self.assertFalse(hasattr(s, 'cached'))
+        with self.assertRaises(AttributeError) as cm:
+            del s.cached
+        self.assertNotIsInstance(cm.exception, FrozenInstanceError)
+
+    def test_non_frozen_normal_derived_from_empty_frozen(self):
+        @dataclass(frozen=True)
+        class D:
+            pass
+
+        class S(D):
+            pass
+
+        s = S()
+        self.assertFalse(hasattr(s, 'x'))
+        s.x = 5
+        self.assertEqual(s.x, 5)
+
+        del s.x
+        self.assertFalse(hasattr(s, 'x'))
+        with self.assertRaises(AttributeError) as cm:
+            del s.x
+        self.assertNotIsInstance(cm.exception, FrozenInstanceError)
+
+    def test_overwriting_frozen(self):
+        # frozen uses __setattr__ and __delattr__.
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __setattr__'):
+            @dataclass(frozen=True)
+            class C:
+                x: int
+                def __setattr__(self):
+                    pass
+
+        with self.assertRaisesRegex(TypeError,
+                                    'Cannot overwrite attribute __delattr__'):
+            @dataclass(frozen=True)
+            class C:
+                x: int
+                def __delattr__(self):
+                    pass
+
+        @dataclass(frozen=False)
+        class C:
+            x: int
+            def __setattr__(self, name, value):
+                self.__dict__['x'] = value * 2
+        self.assertEqual(C(10).x, 20)
+
+    def test_frozen_hash(self):
+        @dataclass(frozen=True)
+        class C:
+            x: Any
+
+        # If x is immutable, we can compute the hash.  No exception is
+        # raised.
+        hash(C(3))
+
+        # If x is mutable, computing the hash is an error.
+        with self.assertRaisesRegex(TypeError, 'unhashable type'):
+            hash(C({}))
+
+
+class TestSlots(unittest.TestCase):
+    def test_simple(self):
+        @dataclass
+        class C:
+            __slots__ = ('x',)
+            x: Any
+
+        # There was a bug where a variable in a slot was assumed to
+        #  also have a default value (of type
+        #  types.MemberDescriptorType).
+        with self.assertRaisesRegex(TypeError,
+                                    r"__init__\(\) missing 1 required positional argument: 'x'"):
+            C()
+
+        # We can create an instance, and assign to x.
+        c = C(10)
+        self.assertEqual(c.x, 10)
+        c.x = 5
+        self.assertEqual(c.x, 5)
+
+        # We can't assign to anything else.
+        with self.assertRaisesRegex(AttributeError, "'C' object has no attribute 'y'"):
+            c.y = 5
+
+    def test_derived_added_field(self):
+        # See bpo-33100.
+        @dataclass
+        class Base:
+            __slots__ = ('x',)
+            x: Any
+
+        @dataclass
+        class Derived(Base):
+            x: int
+            y: int
+
+        d = Derived(1, 2)
+        self.assertEqual((d.x, d.y), (1, 2))
+
+        # We can add a new field to the derived instance.
+        d.z = 10
+
+    def test_generated_slots(self):
+        @dataclass(slots=True)
+        class C:
+            x: int
+            y: int
+
+        c = C(1, 2)
+        self.assertEqual((c.x, c.y), (1, 2))
+
+        c.x = 3
+        c.y = 4
+        self.assertEqual((c.x, c.y), (3, 4))
+
+        with self.assertRaisesRegex(AttributeError, "'C' object has no attribute 'z'"):
+            c.z = 5
+
+    def test_add_slots_when_slots_exists(self):
+        with self.assertRaisesRegex(TypeError, '^C already specifies __slots__$'):
+            @dataclass(slots=True)
+            class C:
+                __slots__ = ('x',)
+                x: int
+
+    def test_generated_slots_value(self):
+
+        class Root:
+            __slots__ = {'x'}
+
+        class Root2(Root):
+            __slots__ = {'k': '...', 'j': ''}
+
+        class Root3(Root2):
+            __slots__ = ['h']
+
+        class Root4(Root3):
+            __slots__ = 'aa'
+
+        @dataclass(slots=True)
+        class Base(Root4):
+            y: int
+            j: str
+            h: str
+
+        self.assertEqual(Base.__slots__, ('y', ))
+
+        @dataclass(slots=True)
+        class Derived(Base):
+            aa: float
+            x: str
+            z: int
+            k: str
+            h: str
+
+        self.assertEqual(Derived.__slots__, ('z', ))
+
+        @dataclass
+        class AnotherDerived(Base):
+            z: int
+
+        self.assertNotIn('__slots__', AnotherDerived.__dict__)
+
+    def test_cant_inherit_from_iterator_slots(self):
+
+        class Root:
+            __slots__ = iter(['a'])
+
+        class Root2(Root):
+            __slots__ = ('b', )
+
+        with self.assertRaisesRegex(
+           TypeError,
+            "^Slots of 'Root' cannot be determined"
+        ):
+            @dataclass(slots=True)
+            class C(Root2):
+                x: int
+
+    def test_returns_new_class(self):
+        class A:
+            x: int
+
+        B = dataclass(A, slots=True)
+        self.assertIsNot(A, B)
+
+        self.assertFalse(hasattr(A, "__slots__"))
+        self.assertTrue(hasattr(B, "__slots__"))
+
+    # Can't be local to test_frozen_pickle.
+    @dataclass(frozen=True, slots=True)
+    class FrozenSlotsClass:
+        foo: str
+        bar: int
+
+    @dataclass(frozen=True)
+    class FrozenWithoutSlotsClass:
+        foo: str
+        bar: int
+
+    def test_frozen_pickle(self):
+        # bpo-43999
+
+        self.assertEqual(self.FrozenSlotsClass.__slots__, ("foo", "bar"))
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(proto=proto):
+                obj = self.FrozenSlotsClass("a", 1)
+                p = pickle.loads(pickle.dumps(obj, protocol=proto))
+                self.assertIsNot(obj, p)
+                self.assertEqual(obj, p)
+
+                obj = self.FrozenWithoutSlotsClass("a", 1)
+                p = pickle.loads(pickle.dumps(obj, protocol=proto))
+                self.assertIsNot(obj, p)
+                self.assertEqual(obj, p)
+
+    @dataclass(frozen=True, slots=True)
+    class FrozenSlotsGetStateClass:
+        foo: str
+        bar: int
+
+        getstate_called: bool = field(default=False, compare=False)
+
+        def __getstate__(self):
+            object.__setattr__(self, 'getstate_called', True)
+            return [self.foo, self.bar]
+
+    @dataclass(frozen=True, slots=True)
+    class FrozenSlotsSetStateClass:
+        foo: str
+        bar: int
+
+        setstate_called: bool = field(default=False, compare=False)
+
+        def __setstate__(self, state):
+            object.__setattr__(self, 'setstate_called', True)
+            object.__setattr__(self, 'foo', state[0])
+            object.__setattr__(self, 'bar', state[1])
+
+    @dataclass(frozen=True, slots=True)
+    class FrozenSlotsAllStateClass:
+        foo: str
+        bar: int
+
+        getstate_called: bool = field(default=False, compare=False)
+        setstate_called: bool = field(default=False, compare=False)
+
+        def __getstate__(self):
+            object.__setattr__(self, 'getstate_called', True)
+            return [self.foo, self.bar]
+
+        def __setstate__(self, state):
+            object.__setattr__(self, 'setstate_called', True)
+            object.__setattr__(self, 'foo', state[0])
+            object.__setattr__(self, 'bar', state[1])
+
+    def test_frozen_slots_pickle_custom_state(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(proto=proto):
+                obj = self.FrozenSlotsGetStateClass('a', 1)
+                dumped = pickle.dumps(obj, protocol=proto)
+
+                self.assertTrue(obj.getstate_called)
+                self.assertEqual(obj, pickle.loads(dumped))
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(proto=proto):
+                obj = self.FrozenSlotsSetStateClass('a', 1)
+                obj2 = pickle.loads(pickle.dumps(obj, protocol=proto))
+
+                self.assertTrue(obj2.setstate_called)
+                self.assertEqual(obj, obj2)
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(proto=proto):
+                obj = self.FrozenSlotsAllStateClass('a', 1)
+                dumped = pickle.dumps(obj, protocol=proto)
+
+                self.assertTrue(obj.getstate_called)
+
+                obj2 = pickle.loads(dumped)
+                self.assertTrue(obj2.setstate_called)
+                self.assertEqual(obj, obj2)
+
+    def test_slots_with_default_no_init(self):
+        # Originally reported in bpo-44649.
+        @dataclass(slots=True)
+        class A:
+            a: str
+            b: str = field(default='b', init=False)
+
+        obj = A("a")
+        self.assertEqual(obj.a, 'a')
+        self.assertEqual(obj.b, 'b')
+
+    def test_slots_with_default_factory_no_init(self):
+        # Originally reported in bpo-44649.
+        @dataclass(slots=True)
+        class A:
+            a: str
+            b: str = field(default_factory=lambda:'b', init=False)
+
+        obj = A("a")
+        self.assertEqual(obj.a, 'a')
+        self.assertEqual(obj.b, 'b')
+
+    def test_slots_no_weakref(self):
+        @dataclass(slots=True)
+        class A:
+            # No weakref.
+            pass
+
+        self.assertNotIn("__weakref__", A.__slots__)
+        a = A()
+        with self.assertRaisesRegex(TypeError,
+                                    "cannot create weak reference"):
+            weakref.ref(a)
+        with self.assertRaises(AttributeError):
+            a.__weakref__
+
+    def test_slots_weakref(self):
+        @dataclass(slots=True, weakref_slot=True)
+        class A:
+            a: int
+
+        self.assertIn("__weakref__", A.__slots__)
+        a = A(1)
+        a_ref = weakref.ref(a)
+
+        self.assertIs(a.__weakref__, a_ref)
+
+    def test_slots_weakref_base_str(self):
+        class Base:
+            __slots__ = '__weakref__'
+
+        @dataclass(slots=True)
+        class A(Base):
+            a: int
+
+        # __weakref__ is in the base class, not A.  But an A is still weakref-able.
+        self.assertIn("__weakref__", Base.__slots__)
+        self.assertNotIn("__weakref__", A.__slots__)
+        a = A(1)
+        weakref.ref(a)
+
+    def test_slots_weakref_base_tuple(self):
+        # Same as test_slots_weakref_base, but use a tuple instead of a string
+        # in the base class.
+        class Base:
+            __slots__ = ('__weakref__',)
+
+        @dataclass(slots=True)
+        class A(Base):
+            a: int
+
+        # __weakref__ is in the base class, not A.  But an A is still
+        # weakref-able.
+        self.assertIn("__weakref__", Base.__slots__)
+        self.assertNotIn("__weakref__", A.__slots__)
+        a = A(1)
+        weakref.ref(a)
+
+    def test_weakref_slot_without_slot(self):
+        with self.assertRaisesRegex(TypeError,
+                                    "weakref_slot is True but slots is False"):
+            @dataclass(weakref_slot=True)
+            class A:
+                a: int
+
+    def test_weakref_slot_make_dataclass(self):
+        A = make_dataclass('A', [('a', int),], slots=True, weakref_slot=True)
+        self.assertIn("__weakref__", A.__slots__)
+        a = A(1)
+        weakref.ref(a)
+
+        # And make sure if raises if slots=True is not given.
+        with self.assertRaisesRegex(TypeError,
+                                    "weakref_slot is True but slots is False"):
+            B = make_dataclass('B', [('a', int),], weakref_slot=True)
+
+    def test_weakref_slot_subclass_weakref_slot(self):
+        @dataclass(slots=True, weakref_slot=True)
+        class Base:
+            field: int
+
+        # A *can* also specify weakref_slot=True if it wants to (gh-93521)
+        @dataclass(slots=True, weakref_slot=True)
+        class A(Base):
+            ...
+
+        # __weakref__ is in the base class, not A.  But an instance of A
+        # is still weakref-able.
+        self.assertIn("__weakref__", Base.__slots__)
+        self.assertNotIn("__weakref__", A.__slots__)
+        a = A(1)
+        a_ref = weakref.ref(a)
+        self.assertIs(a.__weakref__, a_ref)
+
+    def test_weakref_slot_subclass_no_weakref_slot(self):
+        @dataclass(slots=True, weakref_slot=True)
+        class Base:
+            field: int
+
+        @dataclass(slots=True)
+        class A(Base):
+            ...
+
+        # __weakref__ is in the base class, not A.  Even though A doesn't
+        # specify weakref_slot, it should still be weakref-able.
+        self.assertIn("__weakref__", Base.__slots__)
+        self.assertNotIn("__weakref__", A.__slots__)
+        a = A(1)
+        a_ref = weakref.ref(a)
+        self.assertIs(a.__weakref__, a_ref)
+
+    def test_weakref_slot_normal_base_weakref_slot(self):
+        class Base:
+            __slots__ = ('__weakref__',)
+
+        @dataclass(slots=True, weakref_slot=True)
+        class A(Base):
+            field: int
+
+        # __weakref__ is in the base class, not A.  But an instance of
+        # A is still weakref-able.
+        self.assertIn("__weakref__", Base.__slots__)
+        self.assertNotIn("__weakref__", A.__slots__)
+        a = A(1)
+        a_ref = weakref.ref(a)
+        self.assertIs(a.__weakref__, a_ref)
+
+
+class TestDescriptors(unittest.TestCase):
+    def test_set_name(self):
+        # See bpo-33141.
+
+        # Create a descriptor.
+        class D:
+            def __set_name__(self, owner, name):
+                self.name = name + 'x'
+            def __get__(self, instance, owner):
+                if instance is not None:
+                    return 1
+                return self
+
+        # This is the case of just normal descriptor behavior, no
+        #  dataclass code is involved in initializing the descriptor.
+        @dataclass
+        class C:
+            c: int=D()
+        self.assertEqual(C.c.name, 'cx')
+
+        # Now test with a default value and init=False, which is the
+        #  only time this is really meaningful.  If not using
+        #  init=False, then the descriptor will be overwritten, anyway.
+        @dataclass
+        class C:
+            c: int=field(default=D(), init=False)
+        self.assertEqual(C.c.name, 'cx')
+        self.assertEqual(C().c, 1)
+
+    def test_non_descriptor(self):
+        # PEP 487 says __set_name__ should work on non-descriptors.
+        # Create a descriptor.
+
+        class D:
+            def __set_name__(self, owner, name):
+                self.name = name + 'x'
+
+        @dataclass
+        class C:
+            c: int=field(default=D(), init=False)
+        self.assertEqual(C.c.name, 'cx')
+
+    def test_lookup_on_instance(self):
+        # See bpo-33175.
+        class D:
+            pass
+
+        d = D()
+        # Create an attribute on the instance, not type.
+        d.__set_name__ = Mock()
+
+        # Make sure d.__set_name__ is not called.
+        @dataclass
+        class C:
+            i: int=field(default=d, init=False)
+
+        self.assertEqual(d.__set_name__.call_count, 0)
+
+    def test_lookup_on_class(self):
+        # See bpo-33175.
+        class D:
+            pass
+        D.__set_name__ = Mock()
+
+        # Make sure D.__set_name__ is called.
+        @dataclass
+        class C:
+            i: int=field(default=D(), init=False)
+
+        self.assertEqual(D.__set_name__.call_count, 1)
+
+    def test_init_calls_set(self):
+        class D:
+            pass
+
+        D.__set__ = Mock()
+
+        @dataclass
+        class C:
+            i: D = D()
+
+        # Make sure D.__set__ is called.
+        D.__set__.reset_mock()
+        c = C(5)
+        self.assertEqual(D.__set__.call_count, 1)
+
+    def test_getting_field_calls_get(self):
+        class D:
+            pass
+
+        D.__set__ = Mock()
+        D.__get__ = Mock()
+
+        @dataclass
+        class C:
+            i: D = D()
+
+        c = C(5)
+
+        # Make sure D.__get__ is called.
+        D.__get__.reset_mock()
+        value = c.i
+        self.assertEqual(D.__get__.call_count, 1)
+
+    def test_setting_field_calls_set(self):
+        class D:
+            pass
+
+        D.__set__ = Mock()
+
+        @dataclass
+        class C:
+            i: D = D()
+
+        c = C(5)
+
+        # Make sure D.__set__ is called.
+        D.__set__.reset_mock()
+        c.i = 10
+        self.assertEqual(D.__set__.call_count, 1)
+
+    def test_setting_uninitialized_descriptor_field(self):
+        class D:
+            pass
+
+        D.__set__ = Mock()
+
+        @dataclass
+        class C:
+            i: D
+
+        # D.__set__ is not called because there's no D instance to call it on
+        D.__set__.reset_mock()
+        c = C(5)
+        self.assertEqual(D.__set__.call_count, 0)
+
+        # D.__set__ still isn't called after setting i to an instance of D
+        # because descriptors don't behave like that when stored as instance vars
+        c.i = D()
+        c.i = 5
+        self.assertEqual(D.__set__.call_count, 0)
+
+    def test_default_value(self):
+        class D:
+            def __get__(self, instance: Any, owner: object) -> int:
+                if instance is None:
+                    return 100
+
+                return instance._x
+
+            def __set__(self, instance: Any, value: int) -> None:
+                instance._x = value
+
+        @dataclass
+        class C:
+            i: D = D()
+
+        c = C()
+        self.assertEqual(c.i, 100)
+
+        c = C(5)
+        self.assertEqual(c.i, 5)
+
+    def test_no_default_value(self):
+        class D:
+            def __get__(self, instance: Any, owner: object) -> int:
+                if instance is None:
+                    raise AttributeError()
+
+                return instance._x
+
+            def __set__(self, instance: Any, value: int) -> None:
+                instance._x = value
+
+        @dataclass
+        class C:
+            i: D = D()
+
+        with self.assertRaisesRegex(TypeError, 'missing 1 required positional argument'):
+            c = C()
+
+class TestStringAnnotations(unittest.TestCase):
+    def test_classvar(self):
+        # Some expressions recognized as ClassVar really aren't.  But
+        #  if you're using string annotations, it's not an exact
+        #  science.
+        # These tests assume that both "import typing" and "from
+        # typing import *" have been run in this file.
+        for typestr in ('ClassVar[int]',
+                        'ClassVar [int]',
+                        ' ClassVar [int]',
+                        'ClassVar',
+                        ' ClassVar ',
+                        'typing.ClassVar[int]',
+                        'typing.ClassVar[str]',
+                        ' typing.ClassVar[str]',
+                        'typing .ClassVar[str]',
+                        'typing. ClassVar[str]',
+                        'typing.ClassVar [str]',
+                        'typing.ClassVar [ str]',
+
+                        # Not syntactically valid, but these will
+                        #  be treated as ClassVars.
+                        'typing.ClassVar.[int]',
+                        'typing.ClassVar+',
+                        ):
+            with self.subTest(typestr=typestr):
+                @dataclass
+                class C:
+                    x: typestr
+
+                # x is a ClassVar, so C() takes no args.
+                C()
+
+                # And it won't appear in the class's dict because it doesn't
+                # have a default.
+                self.assertNotIn('x', C.__dict__)
+
+    def test_isnt_classvar(self):
+        for typestr in ('CV',
+                        't.ClassVar',
+                        't.ClassVar[int]',
+                        'typing..ClassVar[int]',
+                        'Classvar',
+                        'Classvar[int]',
+                        'typing.ClassVarx[int]',
+                        'typong.ClassVar[int]',
+                        'dataclasses.ClassVar[int]',
+                        'typingxClassVar[str]',
+                        ):
+            with self.subTest(typestr=typestr):
+                @dataclass
+                class C:
+                    x: typestr
+
+                # x is not a ClassVar, so C() takes one arg.
+                self.assertEqual(C(10).x, 10)
+
+    def test_initvar(self):
+        # These tests assume that both "import dataclasses" and "from
+        #  dataclasses import *" have been run in this file.
+        for typestr in ('InitVar[int]',
+                        'InitVar [int]'
+                        ' InitVar [int]',
+                        'InitVar',
+                        ' InitVar ',
+                        'dataclasses.InitVar[int]',
+                        'dataclasses.InitVar[str]',
+                        ' dataclasses.InitVar[str]',
+                        'dataclasses .InitVar[str]',
+                        'dataclasses. InitVar[str]',
+                        'dataclasses.InitVar [str]',
+                        'dataclasses.InitVar [ str]',
+
+                        # Not syntactically valid, but these will
+                        #  be treated as InitVars.
+                        'dataclasses.InitVar.[int]',
+                        'dataclasses.InitVar+',
+                        ):
+            with self.subTest(typestr=typestr):
+                @dataclass
+                class C:
+                    x: typestr
+
+                # x is an InitVar, so doesn't create a member.
+                with self.assertRaisesRegex(AttributeError,
+                                            "object has no attribute 'x'"):
+                    C(1).x
+
+    def test_isnt_initvar(self):
+        for typestr in ('IV',
+                        'dc.InitVar',
+                        'xdataclasses.xInitVar',
+                        'typing.xInitVar[int]',
+                        ):
+            with self.subTest(typestr=typestr):
+                @dataclass
+                class C:
+                    x: typestr
+
+                # x is not an InitVar, so there will be a member x.
+                self.assertEqual(C(10).x, 10)
+
+    def test_classvar_module_level_import(self):
+        from test.test_dataclasses import dataclass_module_1
+        from test.test_dataclasses import dataclass_module_1_str
+        from test.test_dataclasses import dataclass_module_2
+        from test.test_dataclasses import dataclass_module_2_str
+
+        for m in (dataclass_module_1, dataclass_module_1_str,
+                  dataclass_module_2, dataclass_module_2_str,
+                  ):
+            with self.subTest(m=m):
+                # There's a difference in how the ClassVars are
+                # interpreted when using string annotations or
+                # not. See the imported modules for details.
+                if m.USING_STRINGS:
+                    c = m.CV(10)
+                else:
+                    c = m.CV()
+                self.assertEqual(c.cv0, 20)
+
+
+                # There's a difference in how the InitVars are
+                # interpreted when using string annotations or
+                # not. See the imported modules for details.
+                c = m.IV(0, 1, 2, 3, 4)
+
+                for field_name in ('iv0', 'iv1', 'iv2', 'iv3'):
+                    with self.subTest(field_name=field_name):
+                        with self.assertRaisesRegex(AttributeError, f"object has no attribute '{field_name}'"):
+                            # Since field_name is an InitVar, it's
+                            # not an instance field.
+                            getattr(c, field_name)
+
+                if m.USING_STRINGS:
+                    # iv4 is interpreted as a normal field.
+                    self.assertIn('not_iv4', c.__dict__)
+                    self.assertEqual(c.not_iv4, 4)
+                else:
+                    # iv4 is interpreted as an InitVar, so it
+                    # won't exist on the instance.
+                    self.assertNotIn('not_iv4', c.__dict__)
+
+    def test_text_annotations(self):
+        from test.test_dataclasses import dataclass_textanno
+
+        self.assertEqual(
+            get_type_hints(dataclass_textanno.Bar),
+            {'foo': dataclass_textanno.Foo})
+        self.assertEqual(
+            get_type_hints(dataclass_textanno.Bar.__init__),
+            {'foo': dataclass_textanno.Foo,
+             'return': type(None)})
+
+
+ByMakeDataClass = make_dataclass('ByMakeDataClass', [('x', int)])
+ManualModuleMakeDataClass = make_dataclass('ManualModuleMakeDataClass',
+                                           [('x', int)],
+                                           module=__name__)
+WrongNameMakeDataclass = make_dataclass('Wrong', [('x', int)])
+WrongModuleMakeDataclass = make_dataclass('WrongModuleMakeDataclass',
+                                          [('x', int)],
+                                          module='custom')
+
+class TestMakeDataclass(unittest.TestCase):
+    def test_simple(self):
+        C = make_dataclass('C',
+                           [('x', int),
+                            ('y', int, field(default=5))],
+                           namespace={'add_one': lambda self: self.x + 1})
+        c = C(10)
+        self.assertEqual((c.x, c.y), (10, 5))
+        self.assertEqual(c.add_one(), 11)
+
+
+    def test_no_mutate_namespace(self):
+        # Make sure a provided namespace isn't mutated.
+        ns = {}
+        C = make_dataclass('C',
+                           [('x', int),
+                            ('y', int, field(default=5))],
+                           namespace=ns)
+        self.assertEqual(ns, {})
+
+    def test_base(self):
+        class Base1:
+            pass
+        class Base2:
+            pass
+        C = make_dataclass('C',
+                           [('x', int)],
+                           bases=(Base1, Base2))
+        c = C(2)
+        self.assertIsInstance(c, C)
+        self.assertIsInstance(c, Base1)
+        self.assertIsInstance(c, Base2)
+
+    def test_base_dataclass(self):
+        @dataclass
+        class Base1:
+            x: int
+        class Base2:
+            pass
+        C = make_dataclass('C',
+                           [('y', int)],
+                           bases=(Base1, Base2))
+        with self.assertRaisesRegex(TypeError, 'required positional'):
+            c = C(2)
+        c = C(1, 2)
+        self.assertIsInstance(c, C)
+        self.assertIsInstance(c, Base1)
+        self.assertIsInstance(c, Base2)
+
+        self.assertEqual((c.x, c.y), (1, 2))
+
+    def test_init_var(self):
+        def post_init(self, y):
+            self.x *= y
+
+        C = make_dataclass('C',
+                           [('x', int),
+                            ('y', InitVar[int]),
+                            ],
+                           namespace={'__post_init__': post_init},
+                           )
+        c = C(2, 3)
+        self.assertEqual(vars(c), {'x': 6})
+        self.assertEqual(len(fields(c)), 1)
+
+    def test_class_var(self):
+        C = make_dataclass('C',
+                           [('x', int),
+                            ('y', ClassVar[int], 10),
+                            ('z', ClassVar[int], field(default=20)),
+                            ])
+        c = C(1)
+        self.assertEqual(vars(c), {'x': 1})
+        self.assertEqual(len(fields(c)), 1)
+        self.assertEqual(C.y, 10)
+        self.assertEqual(C.z, 20)
+
+    def test_other_params(self):
+        C = make_dataclass('C',
+                           [('x', int),
+                            ('y', ClassVar[int], 10),
+                            ('z', ClassVar[int], field(default=20)),
+                            ],
+                           init=False)
+        # Make sure we have a repr, but no init.
+        self.assertNotIn('__init__', vars(C))
+        self.assertIn('__repr__', vars(C))
+
+        # Make sure random other params don't work.
+        with self.assertRaisesRegex(TypeError, 'unexpected keyword argument'):
+            C = make_dataclass('C',
+                               [],
+                               xxinit=False)
+
+    def test_no_types(self):
+        C = make_dataclass('Point', ['x', 'y', 'z'])
+        c = C(1, 2, 3)
+        self.assertEqual(vars(c), {'x': 1, 'y': 2, 'z': 3})
+        self.assertEqual(C.__annotations__, {'x': 'typing.Any',
+                                             'y': 'typing.Any',
+                                             'z': 'typing.Any'})
+
+        C = make_dataclass('Point', ['x', ('y', int), 'z'])
+        c = C(1, 2, 3)
+        self.assertEqual(vars(c), {'x': 1, 'y': 2, 'z': 3})
+        self.assertEqual(C.__annotations__, {'x': 'typing.Any',
+                                             'y': int,
+                                             'z': 'typing.Any'})
+
+    def test_module_attr(self):
+        self.assertEqual(ByMakeDataClass.__module__, __name__)
+        self.assertEqual(ByMakeDataClass(1).__module__, __name__)
+        self.assertEqual(WrongModuleMakeDataclass.__module__, "custom")
+        Nested = make_dataclass('Nested', [])
+        self.assertEqual(Nested.__module__, __name__)
+        self.assertEqual(Nested().__module__, __name__)
+
+    def test_pickle_support(self):
+        for klass in [ByMakeDataClass, ManualModuleMakeDataClass]:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(proto=proto):
+                    self.assertEqual(
+                        pickle.loads(pickle.dumps(klass, proto)),
+                        klass,
+                    )
+                    self.assertEqual(
+                        pickle.loads(pickle.dumps(klass(1), proto)),
+                        klass(1),
+                    )
+
+    def test_cannot_be_pickled(self):
+        for klass in [WrongNameMakeDataclass, WrongModuleMakeDataclass]:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(proto=proto):
+                    with self.assertRaises(pickle.PickleError):
+                        pickle.dumps(klass, proto)
+                    with self.assertRaises(pickle.PickleError):
+                        pickle.dumps(klass(1), proto)
+
+    def test_invalid_type_specification(self):
+        for bad_field in [(),
+                          (1, 2, 3, 4),
+                          ]:
+            with self.subTest(bad_field=bad_field):
+                with self.assertRaisesRegex(TypeError, r'Invalid field: '):
+                    make_dataclass('C', ['a', bad_field])
+
+        # And test for things with no len().
+        for bad_field in [float,
+                          lambda x:x,
+                          ]:
+            with self.subTest(bad_field=bad_field):
+                with self.assertRaisesRegex(TypeError, r'has no len\(\)'):
+                    make_dataclass('C', ['a', bad_field])
+
+    def test_duplicate_field_names(self):
+        for field in ['a', 'ab']:
+            with self.subTest(field=field):
+                with self.assertRaisesRegex(TypeError, 'Field name duplicated'):
+                    make_dataclass('C', [field, 'a', field])
+
+    def test_keyword_field_names(self):
+        for field in ['for', 'async', 'await', 'as']:
+            with self.subTest(field=field):
+                with self.assertRaisesRegex(TypeError, 'must not be keywords'):
+                    make_dataclass('C', ['a', field])
+                with self.assertRaisesRegex(TypeError, 'must not be keywords'):
+                    make_dataclass('C', [field])
+                with self.assertRaisesRegex(TypeError, 'must not be keywords'):
+                    make_dataclass('C', [field, 'a'])
+
+    def test_non_identifier_field_names(self):
+        for field in ['()', 'x,y', '*', '2@3', '', 'little johnny tables']:
+            with self.subTest(field=field):
+                with self.assertRaisesRegex(TypeError, 'must be valid identifiers'):
+                    make_dataclass('C', ['a', field])
+                with self.assertRaisesRegex(TypeError, 'must be valid identifiers'):
+                    make_dataclass('C', [field])
+                with self.assertRaisesRegex(TypeError, 'must be valid identifiers'):
+                    make_dataclass('C', [field, 'a'])
+
+    def test_underscore_field_names(self):
+        # Unlike namedtuple, it's okay if dataclass field names have
+        # an underscore.
+        make_dataclass('C', ['_', '_a', 'a_a', 'a_'])
+
+    def test_funny_class_names_names(self):
+        # No reason to prevent weird class names, since
+        # types.new_class allows them.
+        for classname in ['()', 'x,y', '*', '2@3', '']:
+            with self.subTest(classname=classname):
+                C = make_dataclass(classname, ['a', 'b'])
+                self.assertEqual(C.__name__, classname)
+
+class TestReplace(unittest.TestCase):
+    def test(self):
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            y: int
+
+        c = C(1, 2)
+        c1 = replace(c, x=3)
+        self.assertEqual(c1.x, 3)
+        self.assertEqual(c1.y, 2)
+
+    def test_frozen(self):
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            y: int
+            z: int = field(init=False, default=10)
+            t: int = field(init=False, default=100)
+
+        c = C(1, 2)
+        c1 = replace(c, x=3)
+        self.assertEqual((c.x, c.y, c.z, c.t), (1, 2, 10, 100))
+        self.assertEqual((c1.x, c1.y, c1.z, c1.t), (3, 2, 10, 100))
+
+
+        with self.assertRaisesRegex(TypeError, 'init=False'):
+            replace(c, x=3, z=20, t=50)
+        with self.assertRaisesRegex(TypeError, 'init=False'):
+            replace(c, z=20)
+            replace(c, x=3, z=20, t=50)
+
+        # Make sure the result is still frozen.
+        with self.assertRaisesRegex(FrozenInstanceError, "cannot assign to field 'x'"):
+            c1.x = 3
+
+        # Make sure we can't replace an attribute that doesn't exist,
+        #  if we're also replacing one that does exist.  Test this
+        #  here, because setting attributes on frozen instances is
+        #  handled slightly differently from non-frozen ones.
+        with self.assertRaisesRegex(TypeError, r"__init__\(\) got an unexpected "
+                                             "keyword argument 'a'"):
+            c1 = replace(c, x=20, a=5)
+
+    def test_invalid_field_name(self):
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            y: int
+
+        c = C(1, 2)
+        with self.assertRaisesRegex(TypeError, r"__init__\(\) got an unexpected "
+                                    "keyword argument 'z'"):
+            c1 = replace(c, z=3)
+
+    def test_invalid_object(self):
+        @dataclass(frozen=True)
+        class C:
+            x: int
+            y: int
+
+        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
+            replace(C, x=3)
+
+        with self.assertRaisesRegex(TypeError, 'dataclass instance'):
+            replace(0, x=3)
+
+    def test_no_init(self):
+        @dataclass
+        class C:
+            x: int
+            y: int = field(init=False, default=10)
+
+        c = C(1)
+        c.y = 20
+
+        # Make sure y gets the default value.
+        c1 = replace(c, x=5)
+        self.assertEqual((c1.x, c1.y), (5, 10))
+
+        # Trying to replace y is an error.
+        with self.assertRaisesRegex(TypeError, 'init=False'):
+            replace(c, x=2, y=30)
+
+        with self.assertRaisesRegex(TypeError, 'init=False'):
+            replace(c, y=30)
+
+    def test_classvar(self):
+        @dataclass
+        class C:
+            x: int
+            y: ClassVar[int] = 1000
+
+        c = C(1)
+        d = C(2)
+
+        self.assertIs(c.y, d.y)
+        self.assertEqual(c.y, 1000)
+
+        # Trying to replace y is an error: can't replace ClassVars.
+        with self.assertRaisesRegex(TypeError, r"__init__\(\) got an "
+                                    "unexpected keyword argument 'y'"):
+            replace(c, y=30)
+
+        replace(c, x=5)
+
+    def test_initvar_is_specified(self):
+        @dataclass
+        class C:
+            x: int
+            y: InitVar[int]
+
+            def __post_init__(self, y):
+                self.x *= y
+
+        c = C(1, 10)
+        self.assertEqual(c.x, 10)
+        with self.assertRaisesRegex(TypeError, r"InitVar 'y' must be "
+                                    r"specified with replace\(\)"):
+            replace(c, x=3)
+        c = replace(c, x=3, y=5)
+        self.assertEqual(c.x, 15)
+
+    def test_initvar_with_default_value(self):
+        @dataclass
+        class C:
+            x: int
+            y: InitVar[int] = None
+            z: InitVar[int] = 42
+
+            def __post_init__(self, y, z):
+                if y is not None:
+                    self.x += y
+                if z is not None:
+                    self.x += z
+
+        c = C(x=1, y=10, z=1)
+        self.assertEqual(replace(c), C(x=12))
+        self.assertEqual(replace(c, y=4), C(x=12, y=4, z=42))
+        self.assertEqual(replace(c, y=4, z=1), C(x=12, y=4, z=1))
+
+    def test_recursive_repr(self):
+        @dataclass
+        class C:
+            f: "C"
+
+        c = C(None)
+        c.f = c
+        self.assertEqual(repr(c), "TestReplace.test_recursive_repr.<locals>.C(f=...)")
+
+    def test_recursive_repr_two_attrs(self):
+        @dataclass
+        class C:
+            f: "C"
+            g: "C"
+
+        c = C(None, None)
+        c.f = c
+        c.g = c
+        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_two_attrs"
+                                  ".<locals>.C(f=..., g=...)")
+
+    def test_recursive_repr_indirection(self):
+        @dataclass
+        class C:
+            f: "D"
+
+        @dataclass
+        class D:
+            f: "C"
+
+        c = C(None)
+        d = D(None)
+        c.f = d
+        d.f = c
+        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_indirection"
+                                  ".<locals>.C(f=TestReplace.test_recursive_repr_indirection"
+                                  ".<locals>.D(f=...))")
+
+    def test_recursive_repr_indirection_two(self):
+        @dataclass
+        class C:
+            f: "D"
+
+        @dataclass
+        class D:
+            f: "E"
+
+        @dataclass
+        class E:
+            f: "C"
+
+        c = C(None)
+        d = D(None)
+        e = E(None)
+        c.f = d
+        d.f = e
+        e.f = c
+        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_indirection_two"
+                                  ".<locals>.C(f=TestReplace.test_recursive_repr_indirection_two"
+                                  ".<locals>.D(f=TestReplace.test_recursive_repr_indirection_two"
+                                  ".<locals>.E(f=...)))")
+
+    def test_recursive_repr_misc_attrs(self):
+        @dataclass
+        class C:
+            f: "C"
+            g: int
+
+        c = C(None, 1)
+        c.f = c
+        self.assertEqual(repr(c), "TestReplace.test_recursive_repr_misc_attrs"
+                                  ".<locals>.C(f=..., g=1)")
+
+    ## def test_initvar(self):
+    ##     @dataclass
+    ##     class C:
+    ##         x: int
+    ##         y: InitVar[int]
+
+    ##     c = C(1, 10)
+    ##     d = C(2, 20)
+
+    ##     # In our case, replacing an InitVar is a no-op
+    ##     self.assertEqual(c, replace(c, y=5))
+
+    ##     replace(c, x=5)
+
+class TestAbstract(unittest.TestCase):
+    def test_abc_implementation(self):
+        class Ordered(abc.ABC):
+            @abc.abstractmethod
+            def __lt__(self, other):
+                pass
+
+            @abc.abstractmethod
+            def __le__(self, other):
+                pass
+
+        @dataclass(order=True)
+        class Date(Ordered):
+            year: int
+            month: 'Month'
+            day: 'int'
+
+        self.assertFalse(inspect.isabstract(Date))
+        self.assertGreater(Date(2020,12,25), Date(2020,8,31))
+
+    def test_maintain_abc(self):
+        class A(abc.ABC):
+            @abc.abstractmethod
+            def foo(self):
+                pass
+
+        @dataclass
+        class Date(A):
+            year: int
+            month: 'Month'
+            day: 'int'
+
+        self.assertTrue(inspect.isabstract(Date))
+        msg = "class Date without an implementation for abstract method 'foo'"
+        self.assertRaisesRegex(TypeError, msg, Date)
+
+
+class TestMatchArgs(unittest.TestCase):
+    def test_match_args(self):
+        @dataclass
+        class C:
+            a: int
+        self.assertEqual(C(42).__match_args__, ('a',))
+
+    def test_explicit_match_args(self):
+        ma = ()
+        @dataclass
+        class C:
+            a: int
+            __match_args__ = ma
+        self.assertIs(C(42).__match_args__, ma)
+
+    def test_bpo_43764(self):
+        @dataclass(repr=False, eq=False, init=False)
+        class X:
+            a: int
+            b: int
+            c: int
+        self.assertEqual(X.__match_args__, ("a", "b", "c"))
+
+    def test_match_args_argument(self):
+        @dataclass(match_args=False)
+        class X:
+            a: int
+        self.assertNotIn('__match_args__', X.__dict__)
+
+        @dataclass(match_args=False)
+        class Y:
+            a: int
+            __match_args__ = ('b',)
+        self.assertEqual(Y.__match_args__, ('b',))
+
+        @dataclass(match_args=False)
+        class Z(Y):
+            z: int
+        self.assertEqual(Z.__match_args__, ('b',))
+
+        # Ensure parent dataclass __match_args__ is seen, if child class
+        # specifies match_args=False.
+        @dataclass
+        class A:
+            a: int
+            z: int
+        @dataclass(match_args=False)
+        class B(A):
+            b: int
+        self.assertEqual(B.__match_args__, ('a', 'z'))
+
+    def test_make_dataclasses(self):
+        C = make_dataclass('C', [('x', int), ('y', int)])
+        self.assertEqual(C.__match_args__, ('x', 'y'))
+
+        C = make_dataclass('C', [('x', int), ('y', int)], match_args=True)
+        self.assertEqual(C.__match_args__, ('x', 'y'))
+
+        C = make_dataclass('C', [('x', int), ('y', int)], match_args=False)
+        self.assertNotIn('__match__args__', C.__dict__)
+
+        C = make_dataclass('C', [('x', int), ('y', int)], namespace={'__match_args__': ('z',)})
+        self.assertEqual(C.__match_args__, ('z',))
+
+
+class TestKeywordArgs(unittest.TestCase):
+    def test_no_classvar_kwarg(self):
+        msg = 'field a is a ClassVar but specifies kw_only'
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass
+            class A:
+                a: ClassVar[int] = field(kw_only=True)
+
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass
+            class A:
+                a: ClassVar[int] = field(kw_only=False)
+
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass(kw_only=True)
+            class A:
+                a: ClassVar[int] = field(kw_only=False)
+
+    def test_field_marked_as_kwonly(self):
+        #######################
+        # Using dataclass(kw_only=True)
+        @dataclass(kw_only=True)
+        class A:
+            a: int
+        self.assertTrue(fields(A)[0].kw_only)
+
+        @dataclass(kw_only=True)
+        class A:
+            a: int = field(kw_only=True)
+        self.assertTrue(fields(A)[0].kw_only)
+
+        @dataclass(kw_only=True)
+        class A:
+            a: int = field(kw_only=False)
+        self.assertFalse(fields(A)[0].kw_only)
+
+        #######################
+        # Using dataclass(kw_only=False)
+        @dataclass(kw_only=False)
+        class A:
+            a: int
+        self.assertFalse(fields(A)[0].kw_only)
+
+        @dataclass(kw_only=False)
+        class A:
+            a: int = field(kw_only=True)
+        self.assertTrue(fields(A)[0].kw_only)
+
+        @dataclass(kw_only=False)
+        class A:
+            a: int = field(kw_only=False)
+        self.assertFalse(fields(A)[0].kw_only)
+
+        #######################
+        # Not specifying dataclass(kw_only)
+        @dataclass
+        class A:
+            a: int
+        self.assertFalse(fields(A)[0].kw_only)
+
+        @dataclass
+        class A:
+            a: int = field(kw_only=True)
+        self.assertTrue(fields(A)[0].kw_only)
+
+        @dataclass
+        class A:
+            a: int = field(kw_only=False)
+        self.assertFalse(fields(A)[0].kw_only)
+
+    def test_match_args(self):
+        # kw fields don't show up in __match_args__.
+        @dataclass(kw_only=True)
+        class C:
+            a: int
+        self.assertEqual(C(a=42).__match_args__, ())
+
+        @dataclass
+        class C:
+            a: int
+            b: int = field(kw_only=True)
+        self.assertEqual(C(42, b=10).__match_args__, ('a',))
+
+    def test_KW_ONLY(self):
+        @dataclass
+        class A:
+            a: int
+            _: KW_ONLY
+            b: int
+            c: int
+        A(3, c=5, b=4)
+        msg = "takes 2 positional arguments but 4 were given"
+        with self.assertRaisesRegex(TypeError, msg):
+            A(3, 4, 5)
+
+
+        @dataclass(kw_only=True)
+        class B:
+            a: int
+            _: KW_ONLY
+            b: int
+            c: int
+        B(a=3, b=4, c=5)
+        msg = "takes 1 positional argument but 4 were given"
+        with self.assertRaisesRegex(TypeError, msg):
+            B(3, 4, 5)
+
+        # Explicitly make a field that follows KW_ONLY be non-keyword-only.
+        @dataclass
+        class C:
+            a: int
+            _: KW_ONLY
+            b: int
+            c: int = field(kw_only=False)
+        c = C(1, 2, b=3)
+        self.assertEqual(c.a, 1)
+        self.assertEqual(c.b, 3)
+        self.assertEqual(c.c, 2)
+        c = C(1, b=3, c=2)
+        self.assertEqual(c.a, 1)
+        self.assertEqual(c.b, 3)
+        self.assertEqual(c.c, 2)
+        c = C(1, b=3, c=2)
+        self.assertEqual(c.a, 1)
+        self.assertEqual(c.b, 3)
+        self.assertEqual(c.c, 2)
+        c = C(c=2, b=3, a=1)
+        self.assertEqual(c.a, 1)
+        self.assertEqual(c.b, 3)
+        self.assertEqual(c.c, 2)
+
+    def test_KW_ONLY_as_string(self):
+        @dataclass
+        class A:
+            a: int
+            _: 'dataclasses.KW_ONLY'
+            b: int
+            c: int
+        A(3, c=5, b=4)
+        msg = "takes 2 positional arguments but 4 were given"
+        with self.assertRaisesRegex(TypeError, msg):
+            A(3, 4, 5)
+
+    def test_KW_ONLY_twice(self):
+        msg = "'Y' is KW_ONLY, but KW_ONLY has already been specified"
+
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass
+            class A:
+                a: int
+                X: KW_ONLY
+                Y: KW_ONLY
+                b: int
+                c: int
+
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass
+            class A:
+                a: int
+                X: KW_ONLY
+                b: int
+                Y: KW_ONLY
+                c: int
+
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass
+            class A:
+                a: int
+                X: KW_ONLY
+                b: int
+                c: int
+                Y: KW_ONLY
+
+        # But this usage is okay, since it's not using KW_ONLY.
+        @dataclass
+        class A:
+            a: int
+            _: KW_ONLY
+            b: int
+            c: int = field(kw_only=True)
+
+        # And if inheriting, it's okay.
+        @dataclass
+        class A:
+            a: int
+            _: KW_ONLY
+            b: int
+            c: int
+        @dataclass
+        class B(A):
+            _: KW_ONLY
+            d: int
+
+        # Make sure the error is raised in a derived class.
+        with self.assertRaisesRegex(TypeError, msg):
+            @dataclass
+            class A:
+                a: int
+                _: KW_ONLY
+                b: int
+                c: int
+            @dataclass
+            class B(A):
+                X: KW_ONLY
+                d: int
+                Y: KW_ONLY
+
+
+    def test_post_init(self):
+        @dataclass
+        class A:
+            a: int
+            _: KW_ONLY
+            b: InitVar[int]
+            c: int
+            d: InitVar[int]
+            def __post_init__(self, b, d):
+                raise CustomError(f'{b=} {d=}')
+        with self.assertRaisesRegex(CustomError, 'b=3 d=4'):
+            A(1, c=2, b=3, d=4)
+
+        @dataclass
+        class B:
+            a: int
+            _: KW_ONLY
+            b: InitVar[int]
+            c: int
+            d: InitVar[int]
+            def __post_init__(self, b, d):
+                self.a = b
+                self.c = d
+        b = B(1, c=2, b=3, d=4)
+        self.assertEqual(asdict(b), {'a': 3, 'c': 4})
+
+    def test_defaults(self):
+        # For kwargs, make sure we can have defaults after non-defaults.
+        @dataclass
+        class A:
+            a: int = 0
+            _: KW_ONLY
+            b: int
+            c: int = 1
+            d: int
+
+        a = A(d=4, b=3)
+        self.assertEqual(a.a, 0)
+        self.assertEqual(a.b, 3)
+        self.assertEqual(a.c, 1)
+        self.assertEqual(a.d, 4)
+
+        # Make sure we still check for non-kwarg non-defaults not following
+        # defaults.
+        err_regex = "non-default argument 'z' follows default argument 'a'"
+        with self.assertRaisesRegex(TypeError, err_regex):
+            @dataclass
+            class A:
+                a: int = 0
+                z: int
+                _: KW_ONLY
+                b: int
+                c: int = 1
+                d: int
+
+    def test_make_dataclass(self):
+        A = make_dataclass("A", ['a'], kw_only=True)
+        self.assertTrue(fields(A)[0].kw_only)
+
+        B = make_dataclass("B",
+                           ['a', ('b', int, field(kw_only=False))],
+                           kw_only=True)
+        self.assertTrue(fields(B)[0].kw_only)
+        self.assertFalse(fields(B)[1].kw_only)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/dataclass_module_1.py b/Lib/test/test_dataclasses/dataclass_module_1.py
similarity index 100%
rename from Lib/test/dataclass_module_1.py
rename to Lib/test/test_dataclasses/dataclass_module_1.py
diff --git a/Lib/test/dataclass_module_1_str.py b/Lib/test/test_dataclasses/dataclass_module_1_str.py
similarity index 100%
rename from Lib/test/dataclass_module_1_str.py
rename to Lib/test/test_dataclasses/dataclass_module_1_str.py
diff --git a/Lib/test/dataclass_module_2.py b/Lib/test/test_dataclasses/dataclass_module_2.py
similarity index 100%
rename from Lib/test/dataclass_module_2.py
rename to Lib/test/test_dataclasses/dataclass_module_2.py
diff --git a/Lib/test/dataclass_module_2_str.py b/Lib/test/test_dataclasses/dataclass_module_2_str.py
similarity index 100%
rename from Lib/test/dataclass_module_2_str.py
rename to Lib/test/test_dataclasses/dataclass_module_2_str.py
diff --git a/Lib/test/dataclass_textanno.py b/Lib/test/test_dataclasses/dataclass_textanno.py
similarity index 100%
rename from Lib/test/dataclass_textanno.py
rename to Lib/test/test_dataclasses/dataclass_textanno.py
diff --git a/Lib/test/test_dbm.py b/Lib/test/test_dbm.py
index f21eebc6530c76..e3924d8ec8b5c1 100644
--- a/Lib/test/test_dbm.py
+++ b/Lib/test/test_dbm.py
@@ -155,6 +155,21 @@ def test_keys(self):
             self.assertNotIn(b'xxx', d)
             self.assertRaises(KeyError, lambda: d[b'xxx'])
 
+    def test_clear(self):
+        with dbm.open(_fname, 'c') as d:
+            self.assertEqual(d.keys(), [])
+            a = [(b'a', b'b'), (b'12345678910', b'019237410982340912840198242')]
+            for k, v in a:
+                d[k] = v
+            for k, _ in a:
+                self.assertIn(k, d)
+            self.assertEqual(len(d), len(a))
+
+            d.clear()
+            self.assertEqual(len(d), 0)
+            for k, _ in a:
+                self.assertNotIn(k, d)
+
     def setUp(self):
         self.addCleanup(setattr, dbm, '_defaultmod', dbm._defaultmod)
         dbm._defaultmod = self.module
diff --git a/Lib/test/test_dbm_gnu.py b/Lib/test/test_dbm_gnu.py
index 73602cab5180fc..e20addf1f04f1b 100644
--- a/Lib/test/test_dbm_gnu.py
+++ b/Lib/test/test_dbm_gnu.py
@@ -192,6 +192,20 @@ def test_open_with_bytes_path(self):
     def test_open_with_pathlib_bytes_path(self):
         gdbm.open(FakePath(os.fsencode(filename)), "c").close()
 
+    def test_clear(self):
+        kvs = [('foo', 'bar'), ('1234', '5678')]
+        with gdbm.open(filename, 'c') as db:
+            for k, v in kvs:
+                db[k] = v
+                self.assertIn(k, db)
+            self.assertEqual(len(db), len(kvs))
+
+            db.clear()
+            for k, v in kvs:
+                self.assertNotIn(k, db)
+            self.assertEqual(len(db), 0)
+
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_dbm_ndbm.py b/Lib/test/test_dbm_ndbm.py
index 8f37e3cc624e2e..e0f31c9a9a337d 100644
--- a/Lib/test/test_dbm_ndbm.py
+++ b/Lib/test/test_dbm_ndbm.py
@@ -147,6 +147,19 @@ def test_bool_on_closed_db_raises(self):
             db['a'] = 'b'
         self.assertRaises(dbm.ndbm.error, bool, db)
 
+    def test_clear(self):
+        kvs = [('foo', 'bar'), ('1234', '5678')]
+        with dbm.ndbm.open(self.filename, 'c') as db:
+            for k, v in kvs:
+                db[k] = v
+                self.assertIn(k, db)
+            self.assertEqual(len(db), len(kvs))
+
+            db.clear()
+            for k, v in kvs:
+                self.assertNotIn(k, db)
+            self.assertEqual(len(db), 0)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index 67ccaab40c5edc..7a5fe62b467372 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -20,7 +20,7 @@
 
 This test module can be called from command line with one parameter (Arithmetic
 or Behaviour) to test each part, or without parameter to test both parts. If
-you're working through IDLE, you can import this test module and call test_main()
+you're working through IDLE, you can import this test module and call test()
 with the corresponding argument.
 """
 
@@ -32,15 +32,15 @@
 import unittest
 import numbers
 import locale
-from test.support import (run_unittest, run_doctest, is_resource_enabled,
+from test.support import (is_resource_enabled,
                           requires_IEEE_754, requires_docstrings,
-                          requires_legacy_unicode_capi, check_sanitizer)
+                          check_sanitizer,
+                          check_disallow_instantiation)
 from test.support import (TestFailed,
                           run_with_locale, cpython_only,
                           darwin_malloc_err_warning, is_emscripten)
 from test.support.import_helper import import_fresh_module
 from test.support import threading_helper
-from test.support import warnings_helper
 import random
 import inspect
 import threading
@@ -62,6 +62,7 @@
 fractions = {C:cfractions, P:pfractions}
 sys.modules['decimal'] = orig_sys_decimal
 
+requires_cdecimal = unittest.skipUnless(C, "test requires C version")
 
 # Useful Test Constant
 Signals = {
@@ -99,7 +100,7 @@ def assert_signals(cls, context, attr, expected):
 ]
 
 # Tests are built around these assumed context defaults.
-# test_main() restores the original context.
+# test() restores the original context.
 ORIGINAL_CONTEXT = {
   C: C.getcontext().copy() if C else None,
   P: P.getcontext().copy()
@@ -133,7 +134,7 @@ def init(m):
   EXTRA_FUNCTIONALITY, "test requires regular build")
 
 
-class IBMTestCases(unittest.TestCase):
+class IBMTestCases:
     """Class which tests the Decimal class against the IBM test cases."""
 
     def setUp(self):
@@ -488,14 +489,10 @@ def change_max_exponent(self, exp):
     def change_clamp(self, clamp):
         self.context.clamp = clamp
 
-class CIBMTestCases(IBMTestCases):
-    decimal = C
-class PyIBMTestCases(IBMTestCases):
-    decimal = P
 
 # The following classes test the behaviour of Decimal according to PEP 327
 
-class ExplicitConstructionTest(unittest.TestCase):
+class ExplicitConstructionTest:
     '''Unit tests for Explicit Construction cases of Decimal.'''
 
     def test_explicit_empty(self):
@@ -589,18 +586,6 @@ def test_explicit_from_string(self):
             # underscores don't prevent errors
             self.assertRaises(InvalidOperation, Decimal, "1_2_\u00003")
 
-    @cpython_only
-    @requires_legacy_unicode_capi
-    @warnings_helper.ignore_warnings(category=DeprecationWarning)
-    def test_from_legacy_strings(self):
-        import _testcapi
-        Decimal = self.decimal.Decimal
-        context = self.decimal.Context()
-
-        s = _testcapi.unicode_legacy_string('9.999999')
-        self.assertEqual(str(Decimal(s)), '9.999999')
-        self.assertEqual(str(context.create_decimal(s)), '9.999999')
-
     def test_explicit_from_tuples(self):
         Decimal = self.decimal.Decimal
 
@@ -838,12 +823,13 @@ def test_unicode_digits(self):
         for input, expected in test_values.items():
             self.assertEqual(str(Decimal(input)), expected)
 
-class CExplicitConstructionTest(ExplicitConstructionTest):
+@requires_cdecimal
+class CExplicitConstructionTest(ExplicitConstructionTest, unittest.TestCase):
     decimal = C
-class PyExplicitConstructionTest(ExplicitConstructionTest):
+class PyExplicitConstructionTest(ExplicitConstructionTest, unittest.TestCase):
     decimal = P
 
-class ImplicitConstructionTest(unittest.TestCase):
+class ImplicitConstructionTest:
     '''Unit tests for Implicit Construction cases of Decimal.'''
 
     def test_implicit_from_None(self):
@@ -920,12 +906,13 @@ def __ne__(self, other):
             self.assertEqual(eval('Decimal(10)' + sym + 'E()'),
                              '10' + rop + 'str')
 
-class CImplicitConstructionTest(ImplicitConstructionTest):
+@requires_cdecimal
+class CImplicitConstructionTest(ImplicitConstructionTest, unittest.TestCase):
     decimal = C
-class PyImplicitConstructionTest(ImplicitConstructionTest):
+class PyImplicitConstructionTest(ImplicitConstructionTest, unittest.TestCase):
     decimal = P
 
-class FormatTest(unittest.TestCase):
+class FormatTest:
     '''Unit tests for the format function.'''
     def test_formatting(self):
         Decimal = self.decimal.Decimal
@@ -1235,6 +1222,23 @@ def get_fmt(x, override=None, fmt='n'):
         self.assertEqual(get_fmt(Decimal('-1.5'), dotsep_wide, '020n'),
                          '-0\u00b4000\u00b4000\u00b4000\u00b4001\u00bf5')
 
+    def test_deprecated_N_format(self):
+        Decimal = self.decimal.Decimal
+        h = Decimal('6.62607015e-34')
+        if self.decimal == C:
+            with self.assertWarns(DeprecationWarning) as cm:
+                r = format(h, 'N')
+            self.assertEqual(cm.filename, __file__)
+            self.assertEqual(r, format(h, 'n').upper())
+            with self.assertWarns(DeprecationWarning) as cm:
+                r = format(h, '010.3N')
+            self.assertEqual(cm.filename, __file__)
+            self.assertEqual(r, format(h, '010.3n').upper())
+        else:
+            self.assertRaises(ValueError, format, h, 'N')
+            self.assertRaises(ValueError, format, h, '010.3N')
+
+
     @run_with_locale('LC_ALL', 'ps_AF')
     def test_wide_char_separator_decimal_point(self):
         # locale with wide char separator and decimal point
@@ -1262,12 +1266,13 @@ def __init__(self, a):
         a = A.from_float(42)
         self.assertEqual(self.decimal.Decimal, a.a_type)
 
-class CFormatTest(FormatTest):
+@requires_cdecimal
+class CFormatTest(FormatTest, unittest.TestCase):
     decimal = C
-class PyFormatTest(FormatTest):
+class PyFormatTest(FormatTest, unittest.TestCase):
     decimal = P
 
-class ArithmeticOperatorsTest(unittest.TestCase):
+class ArithmeticOperatorsTest:
     '''Unit tests for all arithmetic operators, binary and unary.'''
 
     def test_addition(self):
@@ -1523,14 +1528,17 @@ def test_nan_comparisons(self):
         equality_ops = operator.eq, operator.ne
 
         # results when InvalidOperation is not trapped
-        for x, y in qnan_pairs + snan_pairs:
-            for op in order_ops + equality_ops:
-                got = op(x, y)
-                expected = True if op is operator.ne else False
-                self.assertIs(expected, got,
-                              "expected {0!r} for operator.{1}({2!r}, {3!r}); "
-                              "got {4!r}".format(
-                        expected, op.__name__, x, y, got))
+        with localcontext() as ctx:
+            ctx.traps[InvalidOperation] = 0
+
+            for x, y in qnan_pairs + snan_pairs:
+                for op in order_ops + equality_ops:
+                    got = op(x, y)
+                    expected = True if op is operator.ne else False
+                    self.assertIs(expected, got,
+                                "expected {0!r} for operator.{1}({2!r}, {3!r}); "
+                                "got {4!r}".format(
+                            expected, op.__name__, x, y, got))
 
         # repeat the above, but this time trap the InvalidOperation
         with localcontext() as ctx:
@@ -1562,9 +1570,10 @@ def test_copy_sign(self):
         self.assertEqual(Decimal(1).copy_sign(-2), d)
         self.assertRaises(TypeError, Decimal(1).copy_sign, '-2')
 
-class CArithmeticOperatorsTest(ArithmeticOperatorsTest):
+@requires_cdecimal
+class CArithmeticOperatorsTest(ArithmeticOperatorsTest, unittest.TestCase):
     decimal = C
-class PyArithmeticOperatorsTest(ArithmeticOperatorsTest):
+class PyArithmeticOperatorsTest(ArithmeticOperatorsTest, unittest.TestCase):
     decimal = P
 
 # The following are two functions used to test threading in the next class
@@ -1654,7 +1663,7 @@ def thfunc2(cls):
 
 
 @threading_helper.requires_working_threading()
-class ThreadingTest(unittest.TestCase):
+class ThreadingTest:
     '''Unit tests for thread local contexts in Decimal.'''
 
     # Take care executing this test from IDLE, there's an issue in threading
@@ -1699,13 +1708,14 @@ def test_threading(self):
         DefaultContext.Emin = save_emin
 
 
-class CThreadingTest(ThreadingTest):
+@requires_cdecimal
+class CThreadingTest(ThreadingTest, unittest.TestCase):
     decimal = C
 
-class PyThreadingTest(ThreadingTest):
+class PyThreadingTest(ThreadingTest, unittest.TestCase):
     decimal = P
 
-class UsabilityTest(unittest.TestCase):
+class UsabilityTest:
     '''Unit tests for Usability cases of Decimal.'''
 
     def test_comparison_operators(self):
@@ -2521,9 +2531,10 @@ def test_conversions_from_int(self):
         self.assertEqual(Decimal(-12).fma(45, Decimal(67)),
                          Decimal(-12).fma(Decimal(45), Decimal(67)))
 
-class CUsabilityTest(UsabilityTest):
+@requires_cdecimal
+class CUsabilityTest(UsabilityTest, unittest.TestCase):
     decimal = C
-class PyUsabilityTest(UsabilityTest):
+class PyUsabilityTest(UsabilityTest, unittest.TestCase):
     decimal = P
 
     def setUp(self):
@@ -2535,7 +2546,7 @@ def tearDown(self):
         sys.set_int_max_str_digits(self._previous_int_limit)
         super().tearDown()
 
-class PythonAPItests(unittest.TestCase):
+class PythonAPItests:
 
     def test_abc(self):
         Decimal = self.decimal.Decimal
@@ -2884,12 +2895,13 @@ def test_exception_hierarchy(self):
         self.assertTrue(issubclass(decimal.DivisionUndefined, ZeroDivisionError))
         self.assertTrue(issubclass(decimal.InvalidContext, InvalidOperation))
 
-class CPythonAPItests(PythonAPItests):
+@requires_cdecimal
+class CPythonAPItests(PythonAPItests, unittest.TestCase):
     decimal = C
-class PyPythonAPItests(PythonAPItests):
+class PyPythonAPItests(PythonAPItests, unittest.TestCase):
     decimal = P
 
-class ContextAPItests(unittest.TestCase):
+class ContextAPItests:
 
     def test_none_args(self):
         Context = self.decimal.Context
@@ -2911,23 +2923,6 @@ def test_none_args(self):
             assert_signals(self, c, 'traps', [InvalidOperation, DivisionByZero,
                                               Overflow])
 
-    @cpython_only
-    @requires_legacy_unicode_capi
-    @warnings_helper.ignore_warnings(category=DeprecationWarning)
-    def test_from_legacy_strings(self):
-        import _testcapi
-        c = self.decimal.Context()
-
-        for rnd in RoundingModes:
-            c.rounding = _testcapi.unicode_legacy_string(rnd)
-            self.assertEqual(c.rounding, rnd)
-
-        s = _testcapi.unicode_legacy_string('')
-        self.assertRaises(TypeError, setattr, c, 'rounding', s)
-
-        s = _testcapi.unicode_legacy_string('ROUND_\x00UP')
-        self.assertRaises(TypeError, setattr, c, 'rounding', s)
-
     def test_pickle(self):
 
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
@@ -3635,12 +3630,13 @@ def test_to_integral_value(self):
         self.assertRaises(TypeError, c.to_integral_value, '10')
         self.assertRaises(TypeError, c.to_integral_value, 10, 'x')
 
-class CContextAPItests(ContextAPItests):
+@requires_cdecimal
+class CContextAPItests(ContextAPItests, unittest.TestCase):
     decimal = C
-class PyContextAPItests(ContextAPItests):
+class PyContextAPItests(ContextAPItests, unittest.TestCase):
     decimal = P
 
-class ContextWithStatement(unittest.TestCase):
+class ContextWithStatement:
     # Can't do these as docstrings until Python 2.6
     # as doctest can't handle __future__ statements
 
@@ -3704,9 +3700,13 @@ def test_localcontext_kwargs(self):
 
     def test_local_context_kwargs_does_not_overwrite_existing_argument(self):
         ctx = self.decimal.getcontext()
-        ctx.prec = 28
+        orig_prec = ctx.prec
         with self.decimal.localcontext(prec=10) as ctx2:
-            self.assertEqual(ctx.prec, 28)
+            self.assertEqual(ctx2.prec, 10)
+            self.assertEqual(ctx.prec, orig_prec)
+        with self.decimal.localcontext(prec=20) as ctx2:
+            self.assertEqual(ctx2.prec, 20)
+            self.assertEqual(ctx.prec, orig_prec)
 
     def test_nested_with_statements(self):
         # Use a copy of the supplied context in the block
@@ -3800,12 +3800,13 @@ def test_with_statements_gc3(self):
                         self.assertEqual(c4.prec, 4)
                         del c4
 
-class CContextWithStatement(ContextWithStatement):
+@requires_cdecimal
+class CContextWithStatement(ContextWithStatement, unittest.TestCase):
     decimal = C
-class PyContextWithStatement(ContextWithStatement):
+class PyContextWithStatement(ContextWithStatement, unittest.TestCase):
     decimal = P
 
-class ContextFlags(unittest.TestCase):
+class ContextFlags:
 
     def test_flags_irrelevant(self):
         # check that the result (numeric result + flags raised) of an
@@ -4072,12 +4073,13 @@ def test_float_operation_default(self):
         self.assertTrue(context.traps[FloatOperation])
         self.assertTrue(context.traps[Inexact])
 
-class CContextFlags(ContextFlags):
+@requires_cdecimal
+class CContextFlags(ContextFlags, unittest.TestCase):
     decimal = C
-class PyContextFlags(ContextFlags):
+class PyContextFlags(ContextFlags, unittest.TestCase):
     decimal = P
 
-class SpecialContexts(unittest.TestCase):
+class SpecialContexts:
     """Test the context templates."""
 
     def test_context_templates(self):
@@ -4157,12 +4159,13 @@ def test_default_context(self):
             if ex:
                 raise ex
 
-class CSpecialContexts(SpecialContexts):
+@requires_cdecimal
+class CSpecialContexts(SpecialContexts, unittest.TestCase):
     decimal = C
-class PySpecialContexts(SpecialContexts):
+class PySpecialContexts(SpecialContexts, unittest.TestCase):
     decimal = P
 
-class ContextInputValidation(unittest.TestCase):
+class ContextInputValidation:
 
     def test_invalid_context(self):
         Context = self.decimal.Context
@@ -4224,12 +4227,13 @@ def test_invalid_context(self):
         self.assertRaises(TypeError, Context, flags=(0,1))
         self.assertRaises(TypeError, Context, traps=(1,0))
 
-class CContextInputValidation(ContextInputValidation):
+@requires_cdecimal
+class CContextInputValidation(ContextInputValidation, unittest.TestCase):
     decimal = C
-class PyContextInputValidation(ContextInputValidation):
+class PyContextInputValidation(ContextInputValidation, unittest.TestCase):
     decimal = P
 
-class ContextSubclassing(unittest.TestCase):
+class ContextSubclassing:
 
     def test_context_subclassing(self):
         decimal = self.decimal
@@ -4338,12 +4342,14 @@ def __init__(self, prec=None, rounding=None, Emin=None, Emax=None,
         for signal in OrderedSignals[decimal]:
             self.assertFalse(c.traps[signal])
 
-class CContextSubclassing(ContextSubclassing):
+@requires_cdecimal
+class CContextSubclassing(ContextSubclassing, unittest.TestCase):
     decimal = C
-class PyContextSubclassing(ContextSubclassing):
+class PyContextSubclassing(ContextSubclassing, unittest.TestCase):
     decimal = P
 
 @skip_if_extra_functionality
+@requires_cdecimal
 class CheckAttributes(unittest.TestCase):
 
     def test_module_attributes(self):
@@ -4373,7 +4379,7 @@ def test_decimal_attributes(self):
         y = [s for s in dir(C.Decimal(9)) if '__' in s or not s.startswith('_')]
         self.assertEqual(set(x) - set(y), set())
 
-class Coverage(unittest.TestCase):
+class Coverage:
 
     def test_adjusted(self):
         Decimal = self.decimal.Decimal
@@ -4630,9 +4636,10 @@ def test_copy(self):
         y = c.copy_sign(x, 1)
         self.assertEqual(y, -x)
 
-class CCoverage(Coverage):
+@requires_cdecimal
+class CCoverage(Coverage, unittest.TestCase):
     decimal = C
-class PyCoverage(Coverage):
+class PyCoverage(Coverage, unittest.TestCase):
     decimal = P
 
     def setUp(self):
@@ -4885,6 +4892,7 @@ def test_constants(self):
         self.assertEqual(C.DecTraps,
                          C.DecErrors|C.DecOverflow|C.DecUnderflow)
 
+@requires_cdecimal
 class CWhitebox(unittest.TestCase):
     """Whitebox testing for _decimal"""
 
@@ -5661,9 +5669,57 @@ def test_maxcontext_exact_arith(self):
             self.assertEqual(Decimal(4) / 2, 2)
             self.assertEqual(Decimal(400) ** -1, Decimal('0.0025'))
 
+    def test_c_immutable_types(self):
+        SignalDict = type(C.Context().flags)
+        SignalDictMixin = SignalDict.__bases__[0]
+        ContextManager = type(C.localcontext())
+        types = (
+            SignalDictMixin,
+            ContextManager,
+            C.Decimal,
+            C.Context,
+        )
+        for tp in types:
+            with self.subTest(tp=tp):
+                with self.assertRaisesRegex(TypeError, "immutable"):
+                    tp.foo = 1
+
+    def test_c_disallow_instantiation(self):
+        ContextManager = type(C.localcontext())
+        check_disallow_instantiation(self, ContextManager)
+
+    def test_c_signaldict_segfault(self):
+        # See gh-106263 for details.
+        SignalDict = type(C.Context().flags)
+        sd = SignalDict()
+        err_msg = "invalid signal dict"
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            len(sd)
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            iter(sd)
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            repr(sd)
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            sd[C.InvalidOperation] = True
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            sd[C.InvalidOperation]
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            sd == C.Context().flags
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            C.Context().flags == sd
+
+        with self.assertRaisesRegex(ValueError, err_msg):
+            sd.copy()
 
 @requires_docstrings
-@unittest.skipUnless(C, "test requires C version")
+@requires_cdecimal
 class SignatureTest(unittest.TestCase):
     """Function signatures"""
 
@@ -5799,52 +5855,10 @@ def doit(ty):
         doit('Context')
 
 
-all_tests = [
-  CExplicitConstructionTest, PyExplicitConstructionTest,
-  CImplicitConstructionTest, PyImplicitConstructionTest,
-  CFormatTest,               PyFormatTest,
-  CArithmeticOperatorsTest,  PyArithmeticOperatorsTest,
-  CThreadingTest,            PyThreadingTest,
-  CUsabilityTest,            PyUsabilityTest,
-  CPythonAPItests,           PyPythonAPItests,
-  CContextAPItests,          PyContextAPItests,
-  CContextWithStatement,     PyContextWithStatement,
-  CContextFlags,             PyContextFlags,
-  CSpecialContexts,          PySpecialContexts,
-  CContextInputValidation,   PyContextInputValidation,
-  CContextSubclassing,       PyContextSubclassing,
-  CCoverage,                 PyCoverage,
-  CFunctionality,            PyFunctionality,
-  CWhitebox,                 PyWhitebox,
-  CIBMTestCases,             PyIBMTestCases,
-]
-
-# Delete C tests if _decimal.so is not present.
-if not C:
-    all_tests = all_tests[1::2]
-else:
-    all_tests.insert(0, CheckAttributes)
-    all_tests.insert(1, SignatureTest)
-
-
-def test_main(arith=None, verbose=None, todo_tests=None, debug=None):
-    """ Execute the tests.
-
-    Runs all arithmetic tests if arith is True or if the "decimal" resource
-    is enabled in regrtest.py
-    """
-
-    init(C)
-    init(P)
-    global TEST_ALL, DEBUG
-    TEST_ALL = arith if arith is not None else is_resource_enabled('decimal')
-    DEBUG = debug
-
-    if todo_tests is None:
-        test_classes = all_tests
-    else:
-        test_classes = [CIBMTestCases, PyIBMTestCases]
-
+def load_tests(loader, tests, pattern):
+    if TODO_TESTS is not None:
+        # Run only Arithmetic tests
+        tests = loader.suiteClass()
     # Dynamically build custom test definition for each file in the test
     # directory and add the definitions to the DecimalTest class.  This
     # procedure insures that new files do not get skipped.
@@ -5852,34 +5866,69 @@ def test_main(arith=None, verbose=None, todo_tests=None, debug=None):
         if '.decTest' not in filename or filename.startswith("."):
             continue
         head, tail = filename.split('.')
-        if todo_tests is not None and head not in todo_tests:
+        if TODO_TESTS is not None and head not in TODO_TESTS:
             continue
         tester = lambda self, f=filename: self.eval_file(directory + f)
-        setattr(CIBMTestCases, 'test_' + head, tester)
-        setattr(PyIBMTestCases, 'test_' + head, tester)
+        setattr(IBMTestCases, 'test_' + head, tester)
         del filename, head, tail, tester
+    for prefix, mod in ('C', C), ('Py', P):
+        if not mod:
+            continue
+        test_class = type(prefix + 'IBMTestCases',
+                          (IBMTestCases, unittest.TestCase),
+                          {'decimal': mod})
+        tests.addTest(loader.loadTestsFromTestCase(test_class))
+
+    if TODO_TESTS is None:
+        from doctest import DocTestSuite, IGNORE_EXCEPTION_DETAIL
+        for mod in C, P:
+            if not mod:
+                continue
+            def setUp(slf, mod=mod):
+                sys.modules['decimal'] = mod
+            def tearDown(slf):
+                sys.modules['decimal'] = orig_sys_decimal
+            optionflags = IGNORE_EXCEPTION_DETAIL if mod is C else 0
+            sys.modules['decimal'] = mod
+            tests.addTest(DocTestSuite(mod, setUp=setUp, tearDown=tearDown,
+                                   optionflags=optionflags))
+            sys.modules['decimal'] = orig_sys_decimal
+    return tests
+
+def setUpModule():
+    init(C)
+    init(P)
+    global TEST_ALL
+    TEST_ALL = ARITH if ARITH is not None else is_resource_enabled('decimal')
+
+def tearDownModule():
+    if C: C.setcontext(ORIGINAL_CONTEXT[C])
+    P.setcontext(ORIGINAL_CONTEXT[P])
+    if not C:
+        warnings.warn('C tests skipped: no module named _decimal.',
+                      UserWarning)
+    if not orig_sys_decimal is sys.modules['decimal']:
+        raise TestFailed("Internal error: unbalanced number of changes to "
+                         "sys.modules['decimal'].")
+
+
+ARITH = None
+TEST_ALL = True
+TODO_TESTS = None
+DEBUG = False
+
+def test(arith=None, verbose=None, todo_tests=None, debug=None):
+    """ Execute the tests.
 
+    Runs all arithmetic tests if arith is True or if the "decimal" resource
+    is enabled in regrtest.py
+    """
 
-    try:
-        run_unittest(*test_classes)
-        if todo_tests is None:
-            from doctest import IGNORE_EXCEPTION_DETAIL
-            savedecimal = sys.modules['decimal']
-            if C:
-                sys.modules['decimal'] = C
-                run_doctest(C, verbose, optionflags=IGNORE_EXCEPTION_DETAIL)
-            sys.modules['decimal'] = P
-            run_doctest(P, verbose)
-            sys.modules['decimal'] = savedecimal
-    finally:
-        if C: C.setcontext(ORIGINAL_CONTEXT[C])
-        P.setcontext(ORIGINAL_CONTEXT[P])
-        if not C:
-            warnings.warn('C tests skipped: no module named _decimal.',
-                          UserWarning)
-        if not orig_sys_decimal is sys.modules['decimal']:
-            raise TestFailed("Internal error: unbalanced number of changes to "
-                             "sys.modules['decimal'].")
+    global ARITH, TODO_TESTS, DEBUG
+    ARITH = arith
+    TODO_TESTS = todo_tests
+    DEBUG = debug
+    unittest.main(__name__, verbosity=2 if verbose else 1, exit=False, argv=[__name__])
 
 
 if __name__ == '__main__':
@@ -5890,8 +5939,8 @@ def test_main(arith=None, verbose=None, todo_tests=None, debug=None):
     (opt, args) = p.parse_args()
 
     if opt.skip:
-        test_main(arith=False, verbose=True)
+        test(arith=False, verbose=True)
     elif args:
-        test_main(arith=True, verbose=True, todo_tests=args, debug=opt.debug)
+        test(arith=True, verbose=True, todo_tests=args, debug=opt.debug)
     else:
-        test_main(arith=True, verbose=True)
+        test(arith=True, verbose=True)
diff --git a/Lib/test/test_decorators.py b/Lib/test/test_decorators.py
index 4b492178c1581f..3a4fc959f6f8a7 100644
--- a/Lib/test/test_decorators.py
+++ b/Lib/test/test_decorators.py
@@ -291,44 +291,6 @@ def bar(): return 42
         self.assertEqual(bar(), 42)
         self.assertEqual(actions, expected_actions)
 
-    def test_wrapped_descriptor_inside_classmethod(self):
-        class BoundWrapper:
-            def __init__(self, wrapped):
-                self.__wrapped__ = wrapped
-
-            def __call__(self, *args, **kwargs):
-                return self.__wrapped__(*args, **kwargs)
-
-        class Wrapper:
-            def __init__(self, wrapped):
-                self.__wrapped__ = wrapped
-
-            def __get__(self, instance, owner):
-                bound_function = self.__wrapped__.__get__(instance, owner)
-                return BoundWrapper(bound_function)
-
-        def decorator(wrapped):
-            return Wrapper(wrapped)
-
-        class Class:
-            @decorator
-            @classmethod
-            def inner(cls):
-                # This should already work.
-                return 'spam'
-
-            @classmethod
-            @decorator
-            def outer(cls):
-                # Raised TypeError with a message saying that the 'Wrapper'
-                # object is not callable.
-                return 'eggs'
-
-        self.assertEqual(Class.inner(), 'spam')
-        self.assertEqual(Class.outer(), 'eggs')
-        self.assertEqual(Class().inner(), 'spam')
-        self.assertEqual(Class().outer(), 'eggs')
-
     def test_bound_function_inside_classmethod(self):
         class A:
             def foo(self, cls):
@@ -339,91 +301,6 @@ class B:
 
         self.assertEqual(B.bar(), 'spam')
 
-    def test_wrapped_classmethod_inside_classmethod(self):
-        class MyClassMethod1:
-            def __init__(self, func):
-                self.func = func
-
-            def __call__(self, cls):
-                if hasattr(self.func, '__get__'):
-                    return self.func.__get__(cls, cls)()
-                return self.func(cls)
-
-            def __get__(self, instance, owner=None):
-                if owner is None:
-                    owner = type(instance)
-                return MethodType(self, owner)
-
-        class MyClassMethod2:
-            def __init__(self, func):
-                if isinstance(func, classmethod):
-                    func = func.__func__
-                self.func = func
-
-            def __call__(self, cls):
-                return self.func(cls)
-
-            def __get__(self, instance, owner=None):
-                if owner is None:
-                    owner = type(instance)
-                return MethodType(self, owner)
-
-        for myclassmethod in [MyClassMethod1, MyClassMethod2]:
-            class A:
-                @myclassmethod
-                def f1(cls):
-                    return cls
-
-                @classmethod
-                @myclassmethod
-                def f2(cls):
-                    return cls
-
-                @myclassmethod
-                @classmethod
-                def f3(cls):
-                    return cls
-
-                @classmethod
-                @classmethod
-                def f4(cls):
-                    return cls
-
-                @myclassmethod
-                @MyClassMethod1
-                def f5(cls):
-                    return cls
-
-                @myclassmethod
-                @MyClassMethod2
-                def f6(cls):
-                    return cls
-
-            self.assertIs(A.f1(), A)
-            self.assertIs(A.f2(), A)
-            self.assertIs(A.f3(), A)
-            self.assertIs(A.f4(), A)
-            self.assertIs(A.f5(), A)
-            self.assertIs(A.f6(), A)
-            a = A()
-            self.assertIs(a.f1(), A)
-            self.assertIs(a.f2(), A)
-            self.assertIs(a.f3(), A)
-            self.assertIs(a.f4(), A)
-            self.assertIs(a.f5(), A)
-            self.assertIs(a.f6(), A)
-
-            def f(cls):
-                return cls
-
-            self.assertIs(myclassmethod(f).__get__(a)(), A)
-            self.assertIs(myclassmethod(f).__get__(a, A)(), A)
-            self.assertIs(myclassmethod(f).__get__(A, A)(), A)
-            self.assertIs(myclassmethod(f).__get__(A)(), type(A))
-            self.assertIs(classmethod(f).__get__(a)(), A)
-            self.assertIs(classmethod(f).__get__(a, A)(), A)
-            self.assertIs(classmethod(f).__get__(A, A)(), A)
-            self.assertIs(classmethod(f).__get__(A)(), type(A))
 
 class TestClassDecorators(unittest.TestCase):
 
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index ad3eefba365856..4a3db80ca43c27 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -989,8 +989,8 @@ class EditableScrollablePane(ScrollablePane,EditablePane): pass
 
     def test_mro_disagreement(self):
         # Testing error messages for MRO disagreement...
-        mro_err_msg = """Cannot create a consistent method resolution
-order (MRO) for bases """
+        mro_err_msg = ("Cannot create a consistent method resolution "
+                       "order (MRO) for bases ")
 
         def raises(exc, expected, callable, *args):
             try:
@@ -1989,7 +1989,7 @@ def __getattr__(self, attr):
         ns = {}
         exec(code, ns)
         number_attrs = ns["number_attrs"]
-        # Warm up the the function for quickening (PEP 659)
+        # Warm up the function for quickening (PEP 659)
         for _ in range(30):
             self.assertEqual(number_attrs(Numbers()), list(range(280)))
 
@@ -4457,6 +4457,7 @@ class Oops(object):
         o.whatever = Provoker(o)
         del o
 
+    @support.requires_resource('cpu')
     def test_wrapper_segfault(self):
         # SF 927248: deeply nested wrappers could cause stack overflow
         f = lambda:None
@@ -4756,24 +4757,24 @@ class Thing:
         thing = Thing()
         for i in range(20):
             with self.assertRaises(TypeError):
-                # PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS
+                # CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS
                 list.sort(thing)
         for i in range(20):
             with self.assertRaises(TypeError):
-                # PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS
+                # CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS
                 str.split(thing)
         for i in range(20):
             with self.assertRaises(TypeError):
-                # PRECALL_NO_KW_METHOD_DESCRIPTOR_NOARGS
+                # CALL_METHOD_DESCRIPTOR_NOARGS
                 str.upper(thing)
         for i in range(20):
             with self.assertRaises(TypeError):
-                # PRECALL_NO_KW_METHOD_DESCRIPTOR_FAST
+                # CALL_METHOD_DESCRIPTOR_FAST
                 str.strip(thing)
         from collections import deque
         for i in range(20):
             with self.assertRaises(TypeError):
-                # PRECALL_NO_KW_METHOD_DESCRIPTOR_O
+                # CALL_METHOD_DESCRIPTOR_O
                 deque.append(thing, thing)
 
     def test_repr_as_str(self):
diff --git a/Lib/test/test_descrtut.py b/Lib/test/test_descrtut.py
index 7796031ed0602f..13e3ea41bdb76c 100644
--- a/Lib/test/test_descrtut.py
+++ b/Lib/test/test_descrtut.py
@@ -139,7 +139,7 @@ def merge(self, other):
     >>> a.x1 = 1
     Traceback (most recent call last):
       File "<stdin>", line 1, in ?
-    AttributeError: 'defaultdict2' object has no attribute 'x1'
+    AttributeError: 'defaultdict2' object has no attribute 'x1' and no __dict__ for setting new attributes
     >>>
 
 """
diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index 79638340059f65..620d0ca4f4c2da 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -8,7 +8,7 @@
 import unittest
 import weakref
 from test import support
-from test.support import import_helper
+from test.support import import_helper, Py_C_RECURSION_LIMIT
 
 
 class DictTest(unittest.TestCase):
@@ -596,7 +596,7 @@ def __repr__(self):
 
     def test_repr_deep(self):
         d = {}
-        for i in range(sys.getrecursionlimit() + 100):
+        for i in range(Py_C_RECURSION_LIMIT + 1):
             d = {1: d}
         self.assertRaises(RecursionError, repr, d)
 
@@ -1582,8 +1582,8 @@ class CAPITest(unittest.TestCase):
     # Test _PyDict_GetItem_KnownHash()
     @support.cpython_only
     def test_getitem_knownhash(self):
-        _testcapi = import_helper.import_module('_testcapi')
-        dict_getitem_knownhash = _testcapi.dict_getitem_knownhash
+        _testinternalcapi = import_helper.import_module('_testinternalcapi')
+        dict_getitem_knownhash = _testinternalcapi.dict_getitem_knownhash
 
         d = {'x': 1, 'y': 2, 'z': 3}
         self.assertEqual(dict_getitem_knownhash(d, 'x', hash('x')), 1)
diff --git a/Lib/test/test_dictviews.py b/Lib/test/test_dictviews.py
index 924f4a6829e19c..cad568b6ac4c2d 100644
--- a/Lib/test/test_dictviews.py
+++ b/Lib/test/test_dictviews.py
@@ -1,8 +1,8 @@
 import collections.abc
 import copy
 import pickle
-import sys
 import unittest
+from test.support import Py_C_RECURSION_LIMIT
 
 class DictSetTest(unittest.TestCase):
 
@@ -279,7 +279,7 @@ def test_recursive_repr(self):
 
     def test_deeply_nested_repr(self):
         d = {}
-        for i in range(sys.getrecursionlimit() + 100):
+        for i in range(Py_C_RECURSION_LIMIT//2 + 100):
             d = {42: d.values()}
         self.assertRaises(RecursionError, repr, d)
 
diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index c90702a408eb33..0ea4dc4566a4a4 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -42,45 +42,45 @@ def cm(cls, x):
         cls.x = x == 1
 
 dis_c_instance_method = """\
-%3d        RESUME                   0
-
-%3d        LOAD_FAST                1 (x)
-           LOAD_CONST               1 (1)
-           COMPARE_OP              40 (==)
-           LOAD_FAST                0 (self)
-           STORE_ATTR               0 (x)
-           RETURN_CONST             0 (None)
+%3d           RESUME                   0
+
+%3d           LOAD_FAST                1 (x)
+              LOAD_CONST               1 (1)
+              COMPARE_OP              72 (==)
+              LOAD_FAST                0 (self)
+              STORE_ATTR               0 (x)
+              RETURN_CONST             0 (None)
 """ % (_C.__init__.__code__.co_firstlineno, _C.__init__.__code__.co_firstlineno + 1,)
 
 dis_c_instance_method_bytes = """\
-       RESUME                   0
-       LOAD_FAST                1
-       LOAD_CONST               1
-       COMPARE_OP              40 (==)
-       LOAD_FAST                0
-       STORE_ATTR               0
-       RETURN_CONST             0
+          RESUME                   0
+          LOAD_FAST                1
+          LOAD_CONST               1
+          COMPARE_OP              72 (==)
+          LOAD_FAST                0
+          STORE_ATTR               0
+          RETURN_CONST             0
 """
 
 dis_c_class_method = """\
-%3d        RESUME                   0
-
-%3d        LOAD_FAST                1 (x)
-           LOAD_CONST               1 (1)
-           COMPARE_OP              40 (==)
-           LOAD_FAST                0 (cls)
-           STORE_ATTR               0 (x)
-           RETURN_CONST             0 (None)
+%3d           RESUME                   0
+
+%3d           LOAD_FAST                1 (x)
+              LOAD_CONST               1 (1)
+              COMPARE_OP              72 (==)
+              LOAD_FAST                0 (cls)
+              STORE_ATTR               0 (x)
+              RETURN_CONST             0 (None)
 """ % (_C.cm.__code__.co_firstlineno, _C.cm.__code__.co_firstlineno + 2,)
 
 dis_c_static_method = """\
-%3d        RESUME                   0
+%3d           RESUME                   0
 
-%3d        LOAD_FAST                0 (x)
-           LOAD_CONST               1 (1)
-           COMPARE_OP              40 (==)
-           STORE_FAST               0 (x)
-           RETURN_CONST             0 (None)
+%3d           LOAD_FAST                0 (x)
+              LOAD_CONST               1 (1)
+              COMPARE_OP              72 (==)
+              STORE_FAST               0 (x)
+              RETURN_CONST             0 (None)
 """ % (_C.sm.__code__.co_firstlineno, _C.sm.__code__.co_firstlineno + 2,)
 
 # Class disassembling info has an extra newline at end.
@@ -100,51 +100,63 @@ def _f(a):
     return 1
 
 dis_f = """\
-%3d        RESUME                   0
+%3d           RESUME                   0
 
-%3d        LOAD_GLOBAL              1 (NULL + print)
-           LOAD_FAST                0 (a)
-           CALL                     1
-           POP_TOP
+%3d           LOAD_GLOBAL              1 (print + NULL)
+              LOAD_FAST                0 (a)
+              CALL                     1
+              POP_TOP
 
-%3d        RETURN_CONST             1 (1)
+%3d           RETURN_CONST             1 (1)
+""" % (_f.__code__.co_firstlineno,
+       _f.__code__.co_firstlineno + 1,
+       _f.__code__.co_firstlineno + 2)
+
+dis_f_with_offsets = """\
+%3d          0       RESUME                   0
+
+%3d          2       LOAD_GLOBAL              1 (print + NULL)
+            12       LOAD_FAST                0 (a)
+            14       CALL                     1
+            22       POP_TOP
+
+%3d         24       RETURN_CONST             1 (1)
 """ % (_f.__code__.co_firstlineno,
        _f.__code__.co_firstlineno + 1,
        _f.__code__.co_firstlineno + 2)
 
 
 dis_f_co_code = """\
-       RESUME                   0
-       LOAD_GLOBAL              1
-       LOAD_FAST                0
-       CALL                     1
-       POP_TOP
-       RETURN_CONST             1
+          RESUME                   0
+          LOAD_GLOBAL              1
+          LOAD_FAST                0
+          CALL                     1
+          POP_TOP
+          RETURN_CONST             1
 """
 
-
 def bug708901():
     for res in range(1,
                      10):
         pass
 
 dis_bug708901 = """\
-%3d        RESUME                   0
+%3d           RESUME                   0
 
-%3d        LOAD_GLOBAL              1 (NULL + range)
-           LOAD_CONST               1 (1)
+%3d           LOAD_GLOBAL              1 (range + NULL)
+              LOAD_CONST               1 (1)
 
-%3d        LOAD_CONST               2 (10)
+%3d           LOAD_CONST               2 (10)
 
-%3d        CALL                     2
-           GET_ITER
-        >> FOR_ITER                 2 (to 34)
-           STORE_FAST               0 (res)
+%3d           CALL                     2
+              GET_ITER
+      L1:     FOR_ITER                 3 (to L2)
+              STORE_FAST               0 (res)
 
-%3d        JUMP_BACKWARD            4 (to 26)
+%3d           JUMP_BACKWARD            5 (to L1)
 
-%3d     >> END_FOR
-           RETURN_CONST             0 (None)
+%3d   L2:     END_FOR
+              RETURN_CONST             0 (None)
 """ % (bug708901.__code__.co_firstlineno,
        bug708901.__code__.co_firstlineno + 1,
        bug708901.__code__.co_firstlineno + 2,
@@ -159,20 +171,20 @@ def bug1333982(x=[]):
     pass
 
 dis_bug1333982 = """\
-%3d        RESUME                   0
+%3d           RESUME                   0
 
-%3d        LOAD_ASSERTION_ERROR
-           LOAD_CONST               1 (<code object <genexpr> at 0x..., file "%s", line %d>)
-           MAKE_FUNCTION            0
-           LOAD_FAST                0 (x)
-           GET_ITER
-           CALL                     0
+%3d           LOAD_ASSERTION_ERROR
+              LOAD_CONST               1 (<code object <genexpr> at 0x..., file "%s", line %d>)
+              MAKE_FUNCTION
+              LOAD_FAST                0 (x)
+              GET_ITER
+              CALL                     0
 
-%3d        LOAD_CONST               2 (1)
+%3d           LOAD_CONST               2 (1)
 
-%3d        BINARY_OP                0 (+)
-           CALL                     0
-           RAISE_VARARGS            1
+%3d           BINARY_OP                0 (+)
+              CALL                     0
+              RAISE_VARARGS            1
 """ % (bug1333982.__code__.co_firstlineno,
        bug1333982.__code__.co_firstlineno + 1,
        __file__,
@@ -190,25 +202,25 @@ def bug42562():
 
 
 dis_bug42562 = """\
-       RESUME                   0
-       RETURN_CONST             0 (None)
+          RESUME                   0
+          RETURN_CONST             0 (None)
 """
 
 # Extended arg followed by NOP
 code_bug_45757 = bytes([
-        0x90, 0x01,  # EXTENDED_ARG 0x01
-        0x09, 0xFF,  # NOP 0xFF
-        0x90, 0x01,  # EXTENDED_ARG 0x01
-        0x64, 0x29,  # LOAD_CONST 0x29
-        0x53, 0x00,  # RETURN_VALUE 0x00
+        opcode.opmap['EXTENDED_ARG'], 0x01,  # EXTENDED_ARG 0x01
+        opcode.opmap['NOP'],          0xFF,  # NOP 0xFF
+        opcode.opmap['EXTENDED_ARG'], 0x01,  # EXTENDED_ARG 0x01
+        opcode.opmap['LOAD_CONST'],   0x29,  # LOAD_CONST 0x29
+        opcode.opmap['RETURN_VALUE'], 0x00,  # RETURN_VALUE 0x00
     ])
 
 dis_bug_45757 = """\
-       EXTENDED_ARG             1
-       NOP
-       EXTENDED_ARG             1
-       LOAD_CONST             297
-       RETURN_VALUE
+          EXTENDED_ARG             1
+          NOP
+          EXTENDED_ARG             1
+          LOAD_CONST             297
+          RETURN_VALUE
 """
 
 # [255, 255, 255, 252] is -4 in a 4 byte signed integer
@@ -221,10 +233,10 @@ def bug42562():
 
 
 dis_bug46724 = """\
-    >> EXTENDED_ARG           255
-       EXTENDED_ARG         65535
-       EXTENDED_ARG         16777215
-       JUMP_FORWARD            -4 (to 0)
+  L1:     EXTENDED_ARG           255
+          EXTENDED_ARG         65535
+          EXTENDED_ARG         16777215
+          JUMP_FORWARD            -4 (to L1)
 """
 
 def func_w_kwargs(a, b, **c):
@@ -234,96 +246,96 @@ def wrap_func_w_kwargs():
     func_w_kwargs(1, 2, c=5)
 
 dis_kw_names = """\
-%3d        RESUME                   0
-
-%3d        LOAD_GLOBAL              1 (NULL + func_w_kwargs)
-           LOAD_CONST               1 (1)
-           LOAD_CONST               2 (2)
-           LOAD_CONST               3 (5)
-           KW_NAMES                 4 (('c',))
-           CALL                     3
-           POP_TOP
-           RETURN_CONST             0 (None)
+%3d           RESUME                   0
+
+%3d           LOAD_GLOBAL              1 (func_w_kwargs + NULL)
+              LOAD_CONST               1 (1)
+              LOAD_CONST               2 (2)
+              LOAD_CONST               3 (5)
+              LOAD_CONST               4 (('c',))
+              CALL_KW                  3
+              POP_TOP
+              RETURN_CONST             0 (None)
 """ % (wrap_func_w_kwargs.__code__.co_firstlineno,
        wrap_func_w_kwargs.__code__.co_firstlineno + 1)
 
 dis_intrinsic_1_2 = """\
-  0        RESUME                   0
-
-  1        LOAD_CONST               0 (0)
-           LOAD_CONST               1 (('*',))
-           IMPORT_NAME              0 (math)
-           CALL_INTRINSIC_1         2 (INTRINSIC_IMPORT_STAR)
-           POP_TOP
-           RETURN_CONST             2 (None)
+  0           RESUME                   0
+
+  1           LOAD_CONST               0 (0)
+              LOAD_CONST               1 (('*',))
+              IMPORT_NAME              0 (math)
+              CALL_INTRINSIC_1         2 (INTRINSIC_IMPORT_STAR)
+              POP_TOP
+              RETURN_CONST             2 (None)
 """
 
 dis_intrinsic_1_5 = """\
-  0        RESUME                   0
+  0           RESUME                   0
 
-  1        LOAD_NAME                0 (a)
-           CALL_INTRINSIC_1         5 (INTRINSIC_UNARY_POSITIVE)
-           RETURN_VALUE
+  1           LOAD_NAME                0 (a)
+              CALL_INTRINSIC_1         5 (INTRINSIC_UNARY_POSITIVE)
+              RETURN_VALUE
 """
 
 dis_intrinsic_1_6 = """\
-  0        RESUME                   0
+  0           RESUME                   0
 
-  1        BUILD_LIST               0
-           LOAD_NAME                0 (a)
-           LIST_EXTEND              1
-           CALL_INTRINSIC_1         6 (INTRINSIC_LIST_TO_TUPLE)
-           RETURN_VALUE
+  1           BUILD_LIST               0
+              LOAD_NAME                0 (a)
+              LIST_EXTEND              1
+              CALL_INTRINSIC_1         6 (INTRINSIC_LIST_TO_TUPLE)
+              RETURN_VALUE
 """
 
 _BIG_LINENO_FORMAT = """\
-  1        RESUME                   0
+  1           RESUME                   0
 
-%3d        LOAD_GLOBAL              0 (spam)
-           POP_TOP
-           RETURN_CONST             0 (None)
+%3d           LOAD_GLOBAL              0 (spam)
+              POP_TOP
+              RETURN_CONST             0 (None)
 """
 
 _BIG_LINENO_FORMAT2 = """\
-   1        RESUME                   0
+   1           RESUME                   0
 
-%4d        LOAD_GLOBAL              0 (spam)
-            POP_TOP
-            RETURN_CONST             0 (None)
+%4d           LOAD_GLOBAL              0 (spam)
+               POP_TOP
+               RETURN_CONST             0 (None)
 """
 
 dis_module_expected_results = """\
 Disassembly of f:
-  4        RESUME                   0
-           RETURN_CONST             0 (None)
+  4           RESUME                   0
+              RETURN_CONST             0 (None)
 
 Disassembly of g:
-  5        RESUME                   0
-           RETURN_CONST             0 (None)
+  5           RESUME                   0
+              RETURN_CONST             0 (None)
 
 """
 
 expr_str = "x + 1"
 
 dis_expr_str = """\
-  0        RESUME                   0
+  0           RESUME                   0
 
-  1        LOAD_NAME                0 (x)
-           LOAD_CONST               0 (1)
-           BINARY_OP                0 (+)
-           RETURN_VALUE
+  1           LOAD_NAME                0 (x)
+              LOAD_CONST               0 (1)
+              BINARY_OP                0 (+)
+              RETURN_VALUE
 """
 
 simple_stmt_str = "x = x + 1"
 
 dis_simple_stmt_str = """\
-  0        RESUME                   0
+  0           RESUME                   0
 
-  1        LOAD_NAME                0 (x)
-           LOAD_CONST               0 (1)
-           BINARY_OP                0 (+)
-           STORE_NAME               0 (x)
-           RETURN_CONST             1 (None)
+  1           LOAD_NAME                0 (x)
+              LOAD_CONST               0 (1)
+              BINARY_OP                0 (+)
+              STORE_NAME               0 (x)
+              RETURN_CONST             1 (None)
 """
 
 annot_stmt_str = """\
@@ -335,34 +347,34 @@ def wrap_func_w_kwargs():
 # leading newline is for a reason (tests lineno)
 
 dis_annot_stmt_str = """\
-  0        RESUME                   0
-
-  2        SETUP_ANNOTATIONS
-           LOAD_CONST               0 (1)
-           STORE_NAME               0 (x)
-           LOAD_NAME                1 (int)
-           LOAD_NAME                2 (__annotations__)
-           LOAD_CONST               1 ('x')
-           STORE_SUBSCR
-
-  3        PUSH_NULL
-           LOAD_NAME                3 (fun)
-           LOAD_CONST               0 (1)
-           CALL                     1
-           LOAD_NAME                2 (__annotations__)
-           LOAD_CONST               2 ('y')
-           STORE_SUBSCR
-
-  4        LOAD_CONST               0 (1)
-           LOAD_NAME                4 (lst)
-           PUSH_NULL
-           LOAD_NAME                3 (fun)
-           LOAD_CONST               3 (0)
-           CALL                     1
-           STORE_SUBSCR
-           LOAD_NAME                1 (int)
-           POP_TOP
-           RETURN_CONST             4 (None)
+  0           RESUME                   0
+
+  2           SETUP_ANNOTATIONS
+              LOAD_CONST               0 (1)
+              STORE_NAME               0 (x)
+              LOAD_NAME                1 (int)
+              LOAD_NAME                2 (__annotations__)
+              LOAD_CONST               1 ('x')
+              STORE_SUBSCR
+
+  3           LOAD_NAME                3 (fun)
+              PUSH_NULL
+              LOAD_CONST               0 (1)
+              CALL                     1
+              LOAD_NAME                2 (__annotations__)
+              LOAD_CONST               2 ('y')
+              STORE_SUBSCR
+
+  4           LOAD_CONST               0 (1)
+              LOAD_NAME                4 (lst)
+              LOAD_NAME                3 (fun)
+              PUSH_NULL
+              LOAD_CONST               3 (0)
+              CALL                     1
+              STORE_SUBSCR
+              LOAD_NAME                1 (int)
+              POP_TOP
+              RETURN_CONST             4 (None)
 """
 
 compound_stmt_str = """\
@@ -372,61 +384,67 @@ def wrap_func_w_kwargs():
 # Trailing newline has been deliberately omitted
 
 dis_compound_stmt_str = """\
-  0        RESUME                   0
+  0           RESUME                   0
 
-  1        LOAD_CONST               0 (0)
-           STORE_NAME               0 (x)
+  1           LOAD_CONST               0 (0)
+              STORE_NAME               0 (x)
 
-  2        NOP
+  2           NOP
 
-  3     >> LOAD_NAME                0 (x)
-           LOAD_CONST               1 (1)
-           BINARY_OP               13 (+=)
-           STORE_NAME               0 (x)
+  3   L1:     LOAD_NAME                0 (x)
+              LOAD_CONST               1 (1)
+              BINARY_OP               13 (+=)
+              STORE_NAME               0 (x)
 
-  2        JUMP_BACKWARD            6 (to 8)
+  2           JUMP_BACKWARD            7 (to L1)
 """
 
 dis_traceback = """\
-%3d        RESUME                   0
-
-%3d        NOP
-
-%3d        LOAD_CONST               1 (1)
-           LOAD_CONST               2 (0)
-    -->    BINARY_OP               11 (/)
-           POP_TOP
-
-%3d        LOAD_FAST_CHECK          1 (tb)
-           RETURN_VALUE
-        >> PUSH_EXC_INFO
-
-%3d        LOAD_GLOBAL              0 (Exception)
-           CHECK_EXC_MATCH
-           POP_JUMP_IF_FALSE       23 (to 80)
-           STORE_FAST               0 (e)
-
-%3d        LOAD_FAST                0 (e)
-           LOAD_ATTR                2 (__traceback__)
-           STORE_FAST               1 (tb)
-           POP_EXCEPT
-           LOAD_CONST               0 (None)
-           STORE_FAST               0 (e)
-           DELETE_FAST              0 (e)
-
-%3d        LOAD_FAST                1 (tb)
-           RETURN_VALUE
-        >> LOAD_CONST               0 (None)
-           STORE_FAST               0 (e)
-           DELETE_FAST              0 (e)
-           RERAISE                  1
-
-%3d     >> RERAISE                  0
-        >> COPY                     3
-           POP_EXCEPT
-           RERAISE                  1
+%4d           RESUME                   0
+
+%4d           NOP
+
+%4d   L1:     LOAD_CONST               1 (1)
+               LOAD_CONST               2 (0)
+           --> BINARY_OP               11 (/)
+               POP_TOP
+
+%4d   L2:     LOAD_FAST_CHECK          1 (tb)
+               RETURN_VALUE
+
+  --   L3:     PUSH_EXC_INFO
+
+%4d           LOAD_GLOBAL              0 (Exception)
+               CHECK_EXC_MATCH
+               POP_JUMP_IF_FALSE       23 (to L7)
+               STORE_FAST               0 (e)
+
+%4d   L4:     LOAD_FAST                0 (e)
+               LOAD_ATTR                2 (__traceback__)
+               STORE_FAST               1 (tb)
+       L5:     POP_EXCEPT
+               LOAD_CONST               0 (None)
+               STORE_FAST               0 (e)
+               DELETE_FAST              0 (e)
+
+%4d           LOAD_FAST                1 (tb)
+               RETURN_VALUE
+
+  --   L6:     LOAD_CONST               0 (None)
+               STORE_FAST               0 (e)
+               DELETE_FAST              0 (e)
+               RERAISE                  1
+
+%4d   L7:     RERAISE                  0
+
+  --   L8:     COPY                     3
+               POP_EXCEPT
+               RERAISE                  1
 ExceptionTable:
-4 rows
+  L1 to L2 -> L3 [0]
+  L3 to L4 -> L8 [1] lasti
+  L4 to L5 -> L6 [1] lasti
+  L6 to L8 -> L8 [1] lasti
 """ % (TRACEBACK_CODE.co_firstlineno,
        TRACEBACK_CODE.co_firstlineno + 1,
        TRACEBACK_CODE.co_firstlineno + 2,
@@ -440,23 +458,25 @@ def _fstring(a, b, c, d):
     return f'{a} {b:4} {c!r} {d!r:4}'
 
 dis_fstring = """\
-%3d        RESUME                   0
-
-%3d        LOAD_FAST                0 (a)
-           FORMAT_VALUE             0
-           LOAD_CONST               1 (' ')
-           LOAD_FAST                1 (b)
-           LOAD_CONST               2 ('4')
-           FORMAT_VALUE             4 (with format)
-           LOAD_CONST               1 (' ')
-           LOAD_FAST                2 (c)
-           FORMAT_VALUE             2 (repr)
-           LOAD_CONST               1 (' ')
-           LOAD_FAST                3 (d)
-           LOAD_CONST               2 ('4')
-           FORMAT_VALUE             6 (repr, with format)
-           BUILD_STRING             7
-           RETURN_VALUE
+%3d           RESUME                   0
+
+%3d           LOAD_FAST                0 (a)
+              FORMAT_SIMPLE
+              LOAD_CONST               1 (' ')
+              LOAD_FAST                1 (b)
+              LOAD_CONST               2 ('4')
+              FORMAT_WITH_SPEC
+              LOAD_CONST               1 (' ')
+              LOAD_FAST                2 (c)
+              CONVERT_VALUE            2 (repr)
+              FORMAT_SIMPLE
+              LOAD_CONST               1 (' ')
+              LOAD_FAST                3 (d)
+              CONVERT_VALUE            2 (repr)
+              LOAD_CONST               2 ('4')
+              FORMAT_WITH_SPEC
+              BUILD_STRING             7
+              RETURN_VALUE
 """ % (_fstring.__code__.co_firstlineno, _fstring.__code__.co_firstlineno + 1)
 
 def _with(c):
@@ -465,42 +485,45 @@ def _with(c):
     y = 2
 
 dis_with = """\
-%3d        RESUME                   0
-
-%3d        LOAD_FAST                0 (c)
-           BEFORE_WITH
-           POP_TOP
-
-%3d        LOAD_CONST               1 (1)
-           STORE_FAST               1 (x)
-
-%3d        LOAD_CONST               0 (None)
-           LOAD_CONST               0 (None)
-           LOAD_CONST               0 (None)
-           CALL                     2
-           POP_TOP
-
-%3d        LOAD_CONST               2 (2)
-           STORE_FAST               2 (y)
-           RETURN_CONST             0 (None)
-
-%3d     >> PUSH_EXC_INFO
-           WITH_EXCEPT_START
-           POP_JUMP_IF_TRUE         1 (to 42)
-           RERAISE                  2
-        >> POP_TOP
-           POP_EXCEPT
-           POP_TOP
-           POP_TOP
-
-%3d        LOAD_CONST               2 (2)
-           STORE_FAST               2 (y)
-           RETURN_CONST             0 (None)
-        >> COPY                     3
-           POP_EXCEPT
-           RERAISE                  1
+%4d           RESUME                   0
+
+%4d           LOAD_FAST                0 (c)
+               BEFORE_WITH
+       L1:     POP_TOP
+
+%4d           LOAD_CONST               1 (1)
+               STORE_FAST               1 (x)
+
+%4d   L2:     LOAD_CONST               0 (None)
+               LOAD_CONST               0 (None)
+               LOAD_CONST               0 (None)
+               CALL                     2
+               POP_TOP
+
+%4d           LOAD_CONST               2 (2)
+               STORE_FAST               2 (y)
+               RETURN_CONST             0 (None)
+
+%4d   L3:     PUSH_EXC_INFO
+               WITH_EXCEPT_START
+               TO_BOOL
+               POP_JUMP_IF_TRUE         1 (to L4)
+               RERAISE                  2
+       L4:     POP_TOP
+       L5:     POP_EXCEPT
+               POP_TOP
+               POP_TOP
+
+%4d           LOAD_CONST               2 (2)
+               STORE_FAST               2 (y)
+               RETURN_CONST             0 (None)
+
+  --   L6:     COPY                     3
+               POP_EXCEPT
+               RERAISE                  1
 ExceptionTable:
-2 rows
+  L1 to L2 -> L3 [1] lasti
+  L3 to L5 -> L6 [3] lasti
 """ % (_with.__code__.co_firstlineno,
        _with.__code__.co_firstlineno + 1,
        _with.__code__.co_firstlineno + 2,
@@ -516,78 +539,97 @@ async def _asyncwith(c):
     y = 2
 
 dis_asyncwith = """\
-%3d        RETURN_GENERATOR
-           POP_TOP
-           RESUME                   0
-
-%3d        LOAD_FAST                0 (c)
-           BEFORE_ASYNC_WITH
-           GET_AWAITABLE            1
-           LOAD_CONST               0 (None)
-        >> SEND                     3 (to 24)
-           YIELD_VALUE              2
-           RESUME                   3
-           JUMP_BACKWARD_NO_INTERRUPT     5 (to 14)
-        >> END_SEND
-           POP_TOP
-
-%3d        LOAD_CONST               1 (1)
-           STORE_FAST               1 (x)
-
-%3d        LOAD_CONST               0 (None)
-           LOAD_CONST               0 (None)
-           LOAD_CONST               0 (None)
-           CALL                     2
-           GET_AWAITABLE            2
-           LOAD_CONST               0 (None)
-        >> SEND                     3 (to 60)
-           YIELD_VALUE              2
-           RESUME                   3
-           JUMP_BACKWARD_NO_INTERRUPT     5 (to 50)
-        >> END_SEND
-           POP_TOP
-
-%3d        LOAD_CONST               2 (2)
-           STORE_FAST               2 (y)
-           RETURN_CONST             0 (None)
-
-%3d     >> CLEANUP_THROW
-           JUMP_BACKWARD           25 (to 24)
-        >> CLEANUP_THROW
-           JUMP_BACKWARD            9 (to 60)
-        >> PUSH_EXC_INFO
-           WITH_EXCEPT_START
-           GET_AWAITABLE            2
-           LOAD_CONST               0 (None)
-        >> SEND                     4 (to 98)
-           YIELD_VALUE              3
-           RESUME                   3
-           JUMP_BACKWARD_NO_INTERRUPT     5 (to 86)
-        >> CLEANUP_THROW
-        >> END_SEND
-           POP_JUMP_IF_TRUE         1 (to 104)
-           RERAISE                  2
-        >> POP_TOP
-           POP_EXCEPT
-           POP_TOP
-           POP_TOP
-
-%3d        LOAD_CONST               2 (2)
-           STORE_FAST               2 (y)
-           RETURN_CONST             0 (None)
-        >> COPY                     3
-           POP_EXCEPT
-           RERAISE                  1
-        >> CALL_INTRINSIC_1         3 (INTRINSIC_STOPITERATION_ERROR)
-           RERAISE                  1
+%4d            RETURN_GENERATOR
+                POP_TOP
+        L1:     RESUME                   0
+
+%4d            LOAD_FAST                0 (c)
+                BEFORE_ASYNC_WITH
+                GET_AWAITABLE            1
+                LOAD_CONST               0 (None)
+        L2:     SEND                     3 (to L5)
+        L3:     YIELD_VALUE              1
+        L4:     RESUME                   3
+                JUMP_BACKWARD_NO_INTERRUPT 5 (to L2)
+        L5:     END_SEND
+        L6:     POP_TOP
+
+%4d            LOAD_CONST               1 (1)
+                STORE_FAST               1 (x)
+
+%4d    L7:     LOAD_CONST               0 (None)
+                LOAD_CONST               0 (None)
+                LOAD_CONST               0 (None)
+                CALL                     2
+                GET_AWAITABLE            2
+                LOAD_CONST               0 (None)
+        L8:     SEND                     3 (to L11)
+        L9:     YIELD_VALUE              1
+       L10:     RESUME                   3
+                JUMP_BACKWARD_NO_INTERRUPT 5 (to L8)
+       L11:     END_SEND
+                POP_TOP
+
+%4d            LOAD_CONST               2 (2)
+                STORE_FAST               2 (y)
+                RETURN_CONST             0 (None)
+
+%4d   L12:     CLEANUP_THROW
+
+  --   L13:     JUMP_BACKWARD           26 (to L5)
+
+%4d   L14:     CLEANUP_THROW
+
+  --   L15:     JUMP_BACKWARD           11 (to L11)
+
+%4d   L16:     PUSH_EXC_INFO
+                WITH_EXCEPT_START
+                GET_AWAITABLE            2
+                LOAD_CONST               0 (None)
+       L17:     SEND                     4 (to L21)
+       L18:     YIELD_VALUE              1
+       L19:     RESUME                   3
+                JUMP_BACKWARD_NO_INTERRUPT 5 (to L17)
+       L20:     CLEANUP_THROW
+       L21:     END_SEND
+                TO_BOOL
+                POP_JUMP_IF_TRUE         1 (to L22)
+                RERAISE                  2
+       L22:     POP_TOP
+       L23:     POP_EXCEPT
+                POP_TOP
+                POP_TOP
+
+%4d            LOAD_CONST               2 (2)
+                STORE_FAST               2 (y)
+                RETURN_CONST             0 (None)
+
+  --   L24:     COPY                     3
+                POP_EXCEPT
+                RERAISE                  1
+       L25:     CALL_INTRINSIC_1         3 (INTRINSIC_STOPITERATION_ERROR)
+                RERAISE                  1
 ExceptionTable:
-12 rows
+  L1 to L3 -> L25 [0] lasti
+  L3 to L4 -> L12 [3]
+  L4 to L6 -> L25 [0] lasti
+  L6 to L7 -> L16 [1] lasti
+  L7 to L9 -> L25 [0] lasti
+  L9 to L10 -> L14 [2]
+  L10 to L13 -> L25 [0] lasti
+  L14 to L15 -> L25 [0] lasti
+  L16 to L18 -> L24 [3] lasti
+  L18 to L19 -> L20 [6]
+  L19 to L23 -> L24 [3] lasti
+  L23 to L25 -> L25 [0] lasti
 """ % (_asyncwith.__code__.co_firstlineno,
        _asyncwith.__code__.co_firstlineno + 1,
        _asyncwith.__code__.co_firstlineno + 2,
        _asyncwith.__code__.co_firstlineno + 1,
        _asyncwith.__code__.co_firstlineno + 3,
        _asyncwith.__code__.co_firstlineno + 1,
+       _asyncwith.__code__.co_firstlineno + 1,
+       _asyncwith.__code__.co_firstlineno + 1,
        _asyncwith.__code__.co_firstlineno + 3,
        )
 
@@ -605,61 +647,70 @@ def _tryfinallyconst(b):
         b()
 
 dis_tryfinally = """\
-%3d        RESUME                   0
-
-%3d        NOP
-
-%3d        LOAD_FAST                0 (a)
-
-%3d        PUSH_NULL
-           LOAD_FAST                1 (b)
-           CALL                     0
-           POP_TOP
-           RETURN_VALUE
-        >> PUSH_EXC_INFO
-           PUSH_NULL
-           LOAD_FAST                1 (b)
-           CALL                     0
-           POP_TOP
-           RERAISE                  0
-        >> COPY                     3
-           POP_EXCEPT
-           RERAISE                  1
+%4d           RESUME                   0
+
+%4d           NOP
+
+%4d   L1:     LOAD_FAST                0 (a)
+
+%4d   L2:     LOAD_FAST                1 (b)
+               PUSH_NULL
+               CALL                     0
+               POP_TOP
+               RETURN_VALUE
+
+  --   L3:     PUSH_EXC_INFO
+
+%4d           LOAD_FAST                1 (b)
+               PUSH_NULL
+               CALL                     0
+               POP_TOP
+               RERAISE                  0
+
+  --   L4:     COPY                     3
+               POP_EXCEPT
+               RERAISE                  1
 ExceptionTable:
-2 rows
+  L1 to L2 -> L3 [0]
+  L3 to L4 -> L4 [1] lasti
 """ % (_tryfinally.__code__.co_firstlineno,
        _tryfinally.__code__.co_firstlineno + 1,
        _tryfinally.__code__.co_firstlineno + 2,
        _tryfinally.__code__.co_firstlineno + 4,
+       _tryfinally.__code__.co_firstlineno + 4,
        )
 
 dis_tryfinallyconst = """\
-%3d        RESUME                   0
-
-%3d        NOP
-
-%3d        NOP
-
-%3d        PUSH_NULL
-           LOAD_FAST                0 (b)
-           CALL                     0
-           POP_TOP
-           RETURN_CONST             1 (1)
-           PUSH_EXC_INFO
-           PUSH_NULL
-           LOAD_FAST                0 (b)
-           CALL                     0
-           POP_TOP
-           RERAISE                  0
-        >> COPY                     3
-           POP_EXCEPT
-           RERAISE                  1
+%4d           RESUME                   0
+
+%4d           NOP
+
+%4d           NOP
+
+%4d           LOAD_FAST                0 (b)
+               PUSH_NULL
+               CALL                     0
+               POP_TOP
+               RETURN_CONST             1 (1)
+
+  --   L1:     PUSH_EXC_INFO
+
+%4d           LOAD_FAST                0 (b)
+               PUSH_NULL
+               CALL                     0
+               POP_TOP
+               RERAISE                  0
+
+  --   L2:     COPY                     3
+               POP_EXCEPT
+               RERAISE                  1
 ExceptionTable:
-1 row
+  L1 to L2 -> L2 [1] lasti
 """ % (_tryfinallyconst.__code__.co_firstlineno,
        _tryfinallyconst.__code__.co_firstlineno + 1,
        _tryfinallyconst.__code__.co_firstlineno + 2,
        _tryfinallyconst.__code__.co_firstlineno + 4,
+       _tryfinallyconst.__code__.co_firstlineno + 4,
        )
 
 def _g(x):
@@ -679,18 +730,19 @@ def foo(x):
     return foo
 
 dis_nested_0 = """\
-           MAKE_CELL                0 (y)
+  --           MAKE_CELL                0 (y)
 
-%3d        RESUME                   0
+%4d           RESUME                   0
 
-%3d        LOAD_CLOSURE             0 (y)
-           BUILD_TUPLE              1
-           LOAD_CONST               1 (<code object foo at 0x..., file "%s", line %d>)
-           MAKE_FUNCTION            8 (closure)
-           STORE_FAST               1 (foo)
+%4d           LOAD_FAST                0 (y)
+               BUILD_TUPLE              1
+               LOAD_CONST               1 (<code object foo at 0x..., file "%s", line %d>)
+               MAKE_FUNCTION
+               SET_FUNCTION_ATTRIBUTE   8 (closure)
+               STORE_FAST               1 (foo)
 
-%3d        LOAD_FAST                1 (foo)
-           RETURN_VALUE
+%4d           LOAD_FAST                1 (foo)
+               RETURN_VALUE
 """ % (_h.__code__.co_firstlineno,
        _h.__code__.co_firstlineno + 1,
        __file__,
@@ -700,21 +752,22 @@ def foo(x):
 
 dis_nested_1 = """%s
 Disassembly of <code object foo at 0x..., file "%s", line %d>:
-           COPY_FREE_VARS           1
-           MAKE_CELL                0 (x)
-
-%3d        RESUME                   0
-
-%3d        LOAD_GLOBAL              1 (NULL + list)
-           LOAD_CLOSURE             0 (x)
-           BUILD_TUPLE              1
-           LOAD_CONST               1 (<code object <genexpr> at 0x..., file "%s", line %d>)
-           MAKE_FUNCTION            8 (closure)
-           LOAD_DEREF               1 (y)
-           GET_ITER
-           CALL                     0
-           CALL                     1
-           RETURN_VALUE
+  --           COPY_FREE_VARS           1
+               MAKE_CELL                0 (x)
+
+%4d           RESUME                   0
+
+%4d           LOAD_GLOBAL              1 (list + NULL)
+               LOAD_FAST                0 (x)
+               BUILD_TUPLE              1
+               LOAD_CONST               1 (<code object <genexpr> at 0x..., file "%s", line %d>)
+               MAKE_FUNCTION
+               SET_FUNCTION_ATTRIBUTE   8 (closure)
+               LOAD_DEREF               1 (y)
+               GET_ITER
+               CALL                     0
+               CALL                     1
+               RETURN_VALUE
 """ % (dis_nested_0,
        __file__,
        _h.__code__.co_firstlineno + 1,
@@ -726,27 +779,28 @@ def foo(x):
 
 dis_nested_2 = """%s
 Disassembly of <code object <genexpr> at 0x..., file "%s", line %d>:
-           COPY_FREE_VARS           1
-
-%3d        RETURN_GENERATOR
-           POP_TOP
-           RESUME                   0
-           LOAD_FAST                0 (.0)
-        >> FOR_ITER                 9 (to 32)
-           STORE_FAST               1 (z)
-           LOAD_DEREF               2 (x)
-           LOAD_FAST                1 (z)
-           BINARY_OP                0 (+)
-           YIELD_VALUE              1
-           RESUME                   1
-           POP_TOP
-           JUMP_BACKWARD           11 (to 10)
-        >> END_FOR
-           RETURN_CONST             0 (None)
-        >> CALL_INTRINSIC_1         3 (INTRINSIC_STOPITERATION_ERROR)
-           RERAISE                  1
+  --           COPY_FREE_VARS           1
+
+%4d           RETURN_GENERATOR
+               POP_TOP
+       L1:     RESUME                   0
+               LOAD_FAST                0 (.0)
+       L2:     FOR_ITER                10 (to L3)
+               STORE_FAST               1 (z)
+               LOAD_DEREF               2 (x)
+               LOAD_FAST                1 (z)
+               BINARY_OP                0 (+)
+               YIELD_VALUE              0
+               RESUME                   5
+               POP_TOP
+               JUMP_BACKWARD           12 (to L2)
+       L3:     END_FOR
+               RETURN_CONST             0 (None)
+
+  --   L4:     CALL_INTRINSIC_1         3 (INTRINSIC_STOPITERATION_ERROR)
+               RERAISE                  1
 ExceptionTable:
-1 row
+  L1 to L4 -> L4 [0] lasti
 """ % (dis_nested_1,
        __file__,
        _h.__code__.co_firstlineno + 3,
@@ -758,17 +812,14 @@ def load_test(x, y=0):
     return a, b
 
 dis_load_test_quickened_code = """\
-%3d           0 RESUME                   0
+%3d           RESUME_CHECK             0
 
-%3d           2 LOAD_FAST__LOAD_FAST     0 (x)
-              4 LOAD_FAST                1 (y)
-              6 STORE_FAST__STORE_FAST     3 (b)
-              8 STORE_FAST__LOAD_FAST     2 (a)
+%3d           LOAD_FAST_LOAD_FAST      1 (x, y)
+              STORE_FAST_STORE_FAST   50 (b, a)
 
-%3d          10 LOAD_FAST__LOAD_FAST     2 (a)
-             12 LOAD_FAST                3 (b)
-             14 BUILD_TUPLE              2
-             16 RETURN_VALUE
+%3d           LOAD_FAST_LOAD_FAST     35 (a, b)
+              BUILD_TUPLE              2
+              RETURN_VALUE
 """ % (load_test.__code__.co_firstlineno,
        load_test.__code__.co_firstlineno + 1,
        load_test.__code__.co_firstlineno + 2)
@@ -778,25 +829,25 @@ def loop_test():
         load_test(i)
 
 dis_loop_test_quickened_code = """\
-%3d        RESUME                   0
-
-%3d        BUILD_LIST               0
-           LOAD_CONST               1 ((1, 2, 3))
-           LIST_EXTEND              1
-           LOAD_CONST               2 (3)
-           BINARY_OP                5 (*)
-           GET_ITER
-        >> FOR_ITER_LIST           13 (to 46)
-           STORE_FAST               0 (i)
-
-%3d        LOAD_GLOBAL_MODULE       1 (NULL + load_test)
-           LOAD_FAST                0 (i)
-           CALL_PY_WITH_DEFAULTS     1
-           POP_TOP
-           JUMP_BACKWARD           15 (to 16)
-
-%3d     >> END_FOR
-           RETURN_CONST             0 (None)
+%3d           RESUME_CHECK             0
+
+%3d           BUILD_LIST               0
+              LOAD_CONST               1 ((1, 2, 3))
+              LIST_EXTEND              1
+              LOAD_CONST               2 (3)
+              BINARY_OP                5 (*)
+              GET_ITER
+      L1:     FOR_ITER_LIST           14 (to L2)
+              STORE_FAST               0 (i)
+
+%3d           LOAD_GLOBAL_MODULE       1 (load_test + NULL)
+              LOAD_FAST                0 (i)
+              CALL_PY_WITH_DEFAULTS    1
+              POP_TOP
+              JUMP_BACKWARD           16 (to L1)
+
+%3d   L2:     END_FOR
+              RETURN_CONST             0 (None)
 """ % (loop_test.__code__.co_firstlineno,
        loop_test.__code__.co_firstlineno + 1,
        loop_test.__code__.co_firstlineno + 2,
@@ -806,14 +857,14 @@ def extended_arg_quick():
     *_, _ = ...
 
 dis_extended_arg_quick_code = """\
-%3d           0 RESUME                   0
-
-%3d           2 LOAD_CONST               1 (Ellipsis)
-              4 EXTENDED_ARG             1
-              6 UNPACK_EX              256
-              8 STORE_FAST               0 (_)
-             10 STORE_FAST               0 (_)
-             12 RETURN_CONST             0 (None)
+%3d           RESUME                   0
+
+%3d           LOAD_CONST               1 (Ellipsis)
+              EXTENDED_ARG             1
+              UNPACK_EX              256
+              POP_TOP
+              STORE_FAST               0 (_)
+              RETURN_CONST             0 (None)
 """% (extended_arg_quick.__code__.co_firstlineno,
       extended_arg_quick.__code__.co_firstlineno + 1,)
 
@@ -825,74 +876,19 @@ class DisTestBase(unittest.TestCase):
     def strip_addresses(self, text):
         return re.sub(r'\b0x[0-9A-Fa-f]+\b', '0x...', text)
 
-    def find_offset_column(self, lines):
-        for line in lines:
-            if line and not line.startswith("Disassembly"):
-                break
-        else:
-            return 0, 0
-        offset = 5
-        while (line[offset] == " "):
-            offset += 1
-        if (line[offset] == ">"):
-            offset += 2
-        while (line[offset] == " "):
-            offset += 1
-        end = offset
-        while line[end] in "0123456789":
-            end += 1
-        return end-5, end
-
-    def assert_offsets_increasing(self, text, delta):
-        expected_offset = 0
-        lines = text.splitlines()
-        start, end = self.find_offset_column(lines)
-        for line in lines:
-            if not line:
-                continue
-            if line.startswith("Disassembly"):
-                expected_offset = 0
-                continue
-            if line.startswith("Exception"):
-                break
-            offset = int(line[start:end])
-            self.assertGreaterEqual(offset, expected_offset, line)
-            expected_offset = offset + delta
-
     def assert_exception_table_increasing(self, lines):
         prev_start, prev_end = -1, -1
         count = 0
         for line in lines:
-            m = re.match(r'  (\d+) to (\d+) -> \d+ \[\d+\]', line)
+            m = re.match(r'  L(\d+) to L(\d+) -> L\d+ \[\d+\]', line)
             start, end = [int(g) for g in m.groups()]
             self.assertGreaterEqual(end, start)
-            self.assertGreater(start, prev_end)
+            self.assertGreaterEqual(start, prev_end)
             prev_start, prev_end = start, end
             count += 1
         return count
 
-    def strip_offsets(self, text):
-        lines = text.splitlines(True)
-        start, end = self.find_offset_column(lines)
-        res = []
-        lines = iter(lines)
-        for line in lines:
-            if line.startswith("Exception"):
-                res.append(line)
-                break
-            if not line or line.startswith("Disassembly"):
-                res.append(line)
-            else:
-                res.append(line[:start] + line[end:])
-        num_rows = self.assert_exception_table_increasing(lines)
-        if num_rows:
-            res.append(f"{num_rows} row{'s' if num_rows > 1 else ''}\n")
-        return "".join(res)
-
-    def do_disassembly_compare(self, got, expected, with_offsets=False):
-        if not with_offsets:
-            self.assert_offsets_increasing(got, 2)
-            got = self.strip_offsets(got)
+    def do_disassembly_compare(self, got, expected):
         if got != expected:
             got = self.strip_addresses(got)
         self.assertEqual(got, expected)
@@ -915,20 +911,19 @@ def get_disassembly(self, func, lasti=-1, wrapper=True, **kwargs):
     def get_disassemble_as_string(self, func, lasti=-1):
         return self.get_disassembly(func, lasti, False)
 
-    def do_disassembly_test(self, func, expected, with_offsets=False):
+    def do_disassembly_test(self, func, expected, **kwargs):
         self.maxDiff = None
-        got = self.get_disassembly(func, depth=0)
-        self.do_disassembly_compare(got, expected, with_offsets)
+        got = self.get_disassembly(func, depth=0, **kwargs)
+        self.do_disassembly_compare(got, expected)
         # Add checks for dis.disco
         if hasattr(func, '__code__'):
             got_disco = io.StringIO()
             with contextlib.redirect_stdout(got_disco):
-                dis.disco(func.__code__)
-            self.do_disassembly_compare(got_disco.getvalue(), expected,
-                                        with_offsets)
+                dis.disco(func.__code__, **kwargs)
+            self.do_disassembly_compare(got_disco.getvalue(), expected)
 
     def test_opmap(self):
-        self.assertEqual(dis.opmap["NOP"], 9)
+        self.assertEqual(dis.opmap["CACHE"], 0)
         self.assertIn(dis.opmap["LOAD_CONST"], dis.hasconst)
         self.assertIn(dis.opmap["STORE_NAME"], dis.hasname)
 
@@ -937,7 +932,6 @@ def test_opname(self):
 
     def test_boundaries(self):
         self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG)
-        self.assertEqual(dis.opmap["STORE_NAME"], dis.HAVE_ARGUMENT)
 
     def test_widths(self):
         long_opcodes = set(['JUMP_BACKWARD_NO_INTERRUPT',
@@ -954,6 +948,9 @@ def test_widths(self):
     def test_dis(self):
         self.do_disassembly_test(_f, dis_f)
 
+    def test_dis_with_offsets(self):
+        self.do_disassembly_test(_f, dis_f_with_offsets, show_offsets=True)
+
     def test_bug_708901(self):
         self.do_disassembly_test(bug708901, dis_bug708901)
 
@@ -977,7 +974,7 @@ def test_bug_46724(self):
         self.do_disassembly_test(bug46724, dis_bug46724)
 
     def test_kw_names(self):
-        # Test that value is displayed for KW_NAMES
+        # Test that value is displayed for keyword argument names:
         self.do_disassembly_test(wrap_func_w_kwargs, dis_kw_names)
 
     def test_intrinsic_1(self):
@@ -1014,39 +1011,6 @@ def func(count):
         from test import dis_module
         self.do_disassembly_test(dis_module, dis_module_expected_results)
 
-    def test_big_offsets(self):
-        self.maxDiff = None
-        def func(count):
-            namespace = {}
-            func = "def foo(x):\n " + ";".join(["x = x + 1"] * count) + "\n return x"
-            exec(func, namespace)
-            return namespace['foo']
-
-        def expected(count, w):
-            s = ['''\
-  1        %*d RESUME                   0
-
-''' % (w, 0)]
-            s += ['''\
-           %*d LOAD_FAST                0 (x)
-           %*d LOAD_CONST               1 (1)
-           %*d BINARY_OP                0 (+)
-           %*d STORE_FAST               0 (x)
-''' % (w, 10*i + 2, w, 10*i + 4, w, 10*i + 6, w, 10*i + 10)
-                 for i in range(count)]
-            s += ['''\
-
-  3        %*d LOAD_FAST                0 (x)
-           %*d RETURN_VALUE
-''' % (w, 10*count + 2, w, 10*count + 4)]
-            s[1] = '  2' + s[1][3:]
-            return ''.join(s)
-
-        for i in range(1, 5):
-            self.do_disassembly_test(func(i), expected(i, 4), True)
-        self.do_disassembly_test(func(999), expected(999, 4), True)
-        self.do_disassembly_test(func(1000), expected(1000, 5), True)
-
     def test_disassemble_str(self):
         self.do_disassembly_test(expr_str, dis_expr_str)
         self.do_disassembly_test(simple_stmt_str, dis_simple_stmt_str)
@@ -1127,7 +1091,7 @@ def test_dis_traceback(self):
             sys.last_exc = e
 
         tb_dis = self.get_disassemble_as_string(tb.tb_frame.f_code, tb.tb_lasti)
-        self.do_disassembly_test(None, tb_dis, True)
+        self.do_disassembly_test(None, tb_dis)
 
     def test_dis_object(self):
         self.assertRaises(TypeError, dis.dis, object())
@@ -1136,7 +1100,6 @@ def test_disassemble_recursive(self):
         def check(expected, **kwargs):
             dis = self.get_disassembly(_h, **kwargs)
             dis = self.strip_addresses(dis)
-            dis = self.strip_offsets(dis)
             self.assertEqual(dis, expected)
 
         check(dis_nested_0, depth=0)
@@ -1163,73 +1126,73 @@ def code_quicken(f, times=ADAPTIVE_WARMUP_DELAY):
     def test_super_instructions(self):
         self.code_quicken(lambda: load_test(0, 0))
         got = self.get_disassembly(load_test, adaptive=True)
-        self.do_disassembly_compare(got, dis_load_test_quickened_code, True)
+        self.do_disassembly_compare(got, dis_load_test_quickened_code)
 
     @cpython_only
     @requires_specialization
     def test_binary_specialize(self):
         binary_op_quicken = """\
-  0           0 RESUME                   0
+  0           RESUME_CHECK             0
 
-  1           2 LOAD_NAME                0 (a)
-              4 LOAD_NAME                1 (b)
-              6 %s
-             10 RETURN_VALUE
+  1           LOAD_NAME                0 (a)
+              LOAD_NAME                1 (b)
+              %s
+              RETURN_VALUE
 """
         co_int = compile('a + b', "<int>", "eval")
         self.code_quicken(lambda: exec(co_int, {}, {'a': 1, 'b': 2}))
         got = self.get_disassembly(co_int, adaptive=True)
-        self.do_disassembly_compare(got, binary_op_quicken % "BINARY_OP_ADD_INT        0 (+)", True)
+        self.do_disassembly_compare(got, binary_op_quicken % "BINARY_OP_ADD_INT        0 (+)")
 
         co_unicode = compile('a + b', "<unicode>", "eval")
         self.code_quicken(lambda: exec(co_unicode, {}, {'a': 'a', 'b': 'b'}))
         got = self.get_disassembly(co_unicode, adaptive=True)
-        self.do_disassembly_compare(got, binary_op_quicken % "BINARY_OP_ADD_UNICODE     0 (+)", True)
+        self.do_disassembly_compare(got, binary_op_quicken % "BINARY_OP_ADD_UNICODE    0 (+)")
 
         binary_subscr_quicken = """\
-  0           0 RESUME                   0
+  0           RESUME_CHECK             0
 
-  1           2 LOAD_NAME                0 (a)
-              4 LOAD_CONST               0 (0)
-              6 %s
-             10 RETURN_VALUE
+  1           LOAD_NAME                0 (a)
+              LOAD_CONST               0 (0)
+              %s
+              RETURN_VALUE
 """
         co_list = compile('a[0]', "<list>", "eval")
         self.code_quicken(lambda: exec(co_list, {}, {'a': [0]}))
         got = self.get_disassembly(co_list, adaptive=True)
-        self.do_disassembly_compare(got, binary_subscr_quicken % "BINARY_SUBSCR_LIST_INT", True)
+        self.do_disassembly_compare(got, binary_subscr_quicken % "BINARY_SUBSCR_LIST_INT")
 
         co_dict = compile('a[0]', "<dict>", "eval")
         self.code_quicken(lambda: exec(co_dict, {}, {'a': {0: '1'}}))
         got = self.get_disassembly(co_dict, adaptive=True)
-        self.do_disassembly_compare(got, binary_subscr_quicken % "BINARY_SUBSCR_DICT", True)
+        self.do_disassembly_compare(got, binary_subscr_quicken % "BINARY_SUBSCR_DICT")
 
     @cpython_only
     @requires_specialization
     def test_load_attr_specialize(self):
         load_attr_quicken = """\
-  0           0 RESUME                   0
+  0           RESUME_CHECK             0
 
-  1           2 LOAD_CONST               0 ('a')
-              4 LOAD_ATTR_SLOT           0 (__class__)
-             24 RETURN_VALUE
+  1           LOAD_CONST               0 ('a')
+              LOAD_ATTR_SLOT           0 (__class__)
+              RETURN_VALUE
 """
         co = compile("'a'.__class__", "", "eval")
         self.code_quicken(lambda: exec(co, {}, {}))
         got = self.get_disassembly(co, adaptive=True)
-        self.do_disassembly_compare(got, load_attr_quicken, True)
+        self.do_disassembly_compare(got, load_attr_quicken)
 
     @cpython_only
     @requires_specialization
     def test_call_specialize(self):
         call_quicken = """\
-  0        RESUME                   0
+  0           RESUME_CHECK             0
 
-  1        PUSH_NULL
-           LOAD_NAME                0 (str)
-           LOAD_CONST               0 (1)
-           CALL_NO_KW_STR_1         1
-           RETURN_VALUE
+  1           LOAD_NAME                0 (str)
+              PUSH_NULL
+              LOAD_CONST               0 (1)
+              CALL_STR_1               1
+              RETURN_VALUE
 """
         co = compile("str(1)", "", "eval")
         self.code_quicken(lambda: exec(co, {}, {}))
@@ -1239,15 +1202,20 @@ def test_call_specialize(self):
     @cpython_only
     @requires_specialization
     def test_loop_quicken(self):
+        import _testinternalcapi
         # Loop can trigger a quicken where the loop is located
         self.code_quicken(loop_test, 1)
         got = self.get_disassembly(loop_test, adaptive=True)
-        self.do_disassembly_compare(got, dis_loop_test_quickened_code)
+        expected = dis_loop_test_quickened_code
+        if _testinternalcapi.get_optimizer():
+            # We *may* see ENTER_EXECUTOR in the disassembly
+            got = got.replace("ENTER_EXECUTOR", "JUMP_BACKWARD ")
+        self.do_disassembly_compare(got, expected)
 
     @cpython_only
     def test_extended_arg_quick(self):
         got = self.get_disassembly(extended_arg_quick)
-        self.do_disassembly_compare(got, dis_extended_arg_quick_code, True)
+        self.do_disassembly_compare(got, dis_extended_arg_quick_code)
 
     def get_cached_values(self, quickened, adaptive):
         def f():
@@ -1277,7 +1245,7 @@ def test_show_caches(self):
                     caches = list(self.get_cached_values(quickened, adaptive))
                     for cache in caches:
                         self.assertRegex(cache, pattern)
-                    total_caches = 20
+                    total_caches = 21
                     empty_caches = 7
                     self.assertEqual(caches.count(""), empty_caches)
                     self.assertEqual(len(caches), total_caches)
@@ -1299,14 +1267,16 @@ def f():
                 op_offset = inst.offset - 2
                 cache_offset = inst.offset
                 break
+            else:
+                opname = inst.opname
         else:
             self.fail("Can't find a CACHE entry in the function provided to do the test")
 
         assem_op = self.get_disassembly(f.__code__, lasti=op_offset, wrapper=False)
         assem_cache = self.get_disassembly(f.__code__, lasti=cache_offset, wrapper=False)
 
-        # Make sure --> exists and points to the correct offset
-        self.assertRegex(assem_op, fr"-->\s+{op_offset}")
+        # Make sure --> exists and points to the correct op
+        self.assertRegex(assem_op, fr"--> {opname}")
         # Make sure when lasti points to cache, it shows the same disassembly
         self.assertEqual(assem_op, assem_cache)
 
@@ -1567,213 +1537,238 @@ def jumpy():
 def _stringify_instruction(instr):
     # Since line numbers and other offsets change a lot for these
     # test cases, ignore them.
-    return str(instr._replace(positions=None))
+    return f"  {instr._replace(positions=None)!r},"
 
 def _prepare_test_cases():
-    _instructions = dis.get_instructions(outer, first_line=expected_outer_line)
-    print('expected_opinfo_outer = [\n  ',
-          ',\n  '.join(map(_stringify_instruction, _instructions)), ',\n]', sep='')
-    _instructions = dis.get_instructions(outer(), first_line=expected_f_line)
-    print('expected_opinfo_f = [\n  ',
-          ',\n  '.join(map(_stringify_instruction, _instructions)), ',\n]', sep='')
-    _instructions = dis.get_instructions(outer()(), first_line=expected_inner_line)
-    print('expected_opinfo_inner = [\n  ',
-          ',\n  '.join(map(_stringify_instruction, _instructions)), ',\n]', sep='')
-    _instructions = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
-    print('expected_opinfo_jumpy = [\n  ',
-          ',\n  '.join(map(_stringify_instruction, _instructions)), ',\n]', sep='')
-    dis.dis(outer)
-
-#_prepare_test_cases()
+    ignore = io.StringIO()
+    with contextlib.redirect_stdout(ignore):
+        f = outer()
+        inner = f()
+    _instructions_outer = dis.get_instructions(outer, first_line=expected_outer_line)
+    _instructions_f = dis.get_instructions(f, first_line=expected_f_line)
+    _instructions_inner = dis.get_instructions(inner, first_line=expected_inner_line)
+    _instructions_jumpy = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
+    result = "\n".join(
+        [
+            "expected_opinfo_outer = [",
+            *map(_stringify_instruction, _instructions_outer),
+            "]",
+            "",
+            "expected_opinfo_f = [",
+            *map(_stringify_instruction, _instructions_f),
+            "]",
+            "",
+            "expected_opinfo_inner = [",
+            *map(_stringify_instruction, _instructions_inner),
+            "]",
+            "",
+            "expected_opinfo_jumpy = [",
+            *map(_stringify_instruction, _instructions_jumpy),
+            "]",
+        ]
+    )
+    result = result.replace(repr(repr(code_object_f)), "repr(code_object_f)")
+    result = result.replace(repr(code_object_f), "code_object_f")
+    result = result.replace(repr(repr(code_object_inner)), "repr(code_object_inner)")
+    result = result.replace(repr(code_object_inner), "code_object_inner")
+    print(result)
+
+# from test.test_dis import _prepare_test_cases; _prepare_test_cases()
 
 Instruction = dis.Instruction
 
 expected_opinfo_outer = [
-  Instruction(opname='MAKE_CELL', opcode=135, arg=0, argval='a', argrepr='a', offset=0, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='MAKE_CELL', opcode=135, arg=1, argval='b', argrepr='b', offset=2, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RESUME', opcode=151, arg=0, argval=0, argrepr='', offset=4, starts_line=1, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=(3, 4), argrepr='(3, 4)', offset=6, starts_line=2, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CLOSURE', opcode=136, arg=0, argval='a', argrepr='a', offset=8, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CLOSURE', opcode=136, arg=1, argval='b', argrepr='b', offset=10, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='BUILD_TUPLE', opcode=102, arg=2, argval=2, argrepr='', offset=12, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=code_object_f, argrepr=repr(code_object_f), offset=14, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='MAKE_FUNCTION', opcode=132, arg=9, argval=9, argrepr='defaults, closure', offset=16, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='STORE_FAST', opcode=125, arg=2, argval='f', argrepr='f', offset=18, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='NULL + print', offset=20, starts_line=7, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=0, argval='a', argrepr='a', offset=30, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=1, argval='b', argrepr='b', offset=32, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval='', argrepr="''", offset=34, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=1, argrepr='1', offset=36, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='BUILD_LIST', opcode=103, arg=0, argval=0, argrepr='', offset=38, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='BUILD_MAP', opcode=105, arg=0, argval=0, argrepr='', offset=40, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='Hello world!', argrepr="'Hello world!'", offset=42, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=7, argval=7, argrepr='', offset=44, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=52, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='f', argrepr='f', offset=54, starts_line=8, is_jump_target=False, positions=None),
-  Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=56, starts_line=None, is_jump_target=False, positions=None),
+  Instruction(opname='MAKE_CELL', opcode=94, arg=0, argval='a', argrepr='a', offset=0, start_offset=0, starts_line=True, line_number=None, label=None, positions=None),
+  Instruction(opname='MAKE_CELL', opcode=94, arg=1, argval='b', argrepr='b', offset=2, start_offset=2, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=4, start_offset=4, starts_line=True, line_number=1, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=5, argval=(3, 4), argrepr='(3, 4)', offset=6, start_offset=6, starts_line=True, line_number=2, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='a', argrepr='a', offset=8, start_offset=8, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=1, argval='b', argrepr='b', offset=10, start_offset=10, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='BUILD_TUPLE', opcode=52, arg=2, argval=2, argrepr='', offset=12, start_offset=12, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=1, argval=code_object_f, argrepr=repr(code_object_f), offset=14, start_offset=14, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='MAKE_FUNCTION', opcode=26, arg=None, argval=None, argrepr='', offset=16, start_offset=16, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=106, arg=8, argval=8, argrepr='closure', offset=18, start_offset=18, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=106, arg=1, argval=1, argrepr='defaults', offset=20, start_offset=20, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='STORE_FAST', opcode=110, arg=2, argval='f', argrepr='f', offset=22, start_offset=22, starts_line=False, line_number=2, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=1, argval='print', argrepr='print + NULL', offset=24, start_offset=24, starts_line=True, line_number=7, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=0, argval='a', argrepr='a', offset=34, start_offset=34, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=1, argval='b', argrepr='b', offset=36, start_offset=36, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=2, argval='', argrepr="''", offset=38, start_offset=38, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=3, argval=1, argrepr='1', offset=40, start_offset=40, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='BUILD_LIST', opcode=47, arg=0, argval=0, argrepr='', offset=42, start_offset=42, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='BUILD_MAP', opcode=48, arg=0, argval=0, argrepr='', offset=44, start_offset=44, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=4, argval='Hello world!', argrepr="'Hello world!'", offset=46, start_offset=46, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=7, argval=7, argrepr='', offset=48, start_offset=48, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=56, start_offset=56, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=2, argval='f', argrepr='f', offset=58, start_offset=58, starts_line=True, line_number=8, label=None, positions=None),
+  Instruction(opname='RETURN_VALUE', opcode=36, arg=None, argval=None, argrepr='', offset=60, start_offset=60, starts_line=False, line_number=8, label=None, positions=None),
 ]
 
 expected_opinfo_f = [
-  Instruction(opname='COPY_FREE_VARS', opcode=149, arg=2, argval=2, argrepr='', offset=0, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='MAKE_CELL', opcode=135, arg=0, argval='c', argrepr='c', offset=2, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='MAKE_CELL', opcode=135, arg=1, argval='d', argrepr='d', offset=4, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RESUME', opcode=151, arg=0, argval=0, argrepr='', offset=6, starts_line=2, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=(5, 6), argrepr='(5, 6)', offset=8, starts_line=3, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CLOSURE', opcode=136, arg=3, argval='a', argrepr='a', offset=10, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CLOSURE', opcode=136, arg=4, argval='b', argrepr='b', offset=12, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CLOSURE', opcode=136, arg=0, argval='c', argrepr='c', offset=14, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CLOSURE', opcode=136, arg=1, argval='d', argrepr='d', offset=16, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='BUILD_TUPLE', opcode=102, arg=4, argval=4, argrepr='', offset=18, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=code_object_inner, argrepr=repr(code_object_inner), offset=20, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='MAKE_FUNCTION', opcode=132, arg=9, argval=9, argrepr='defaults, closure', offset=22, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='STORE_FAST', opcode=125, arg=2, argval='inner', argrepr='inner', offset=24, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='NULL + print', offset=26, starts_line=5, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=3, argval='a', argrepr='a', offset=36, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=4, argval='b', argrepr='b', offset=38, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=0, argval='c', argrepr='c', offset=40, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=1, argval='d', argrepr='d', offset=42, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=4, argval=4, argrepr='', offset=44, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=52, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='inner', argrepr='inner', offset=54, starts_line=6, is_jump_target=False, positions=None),
-  Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=56, starts_line=None, is_jump_target=False, positions=None),
+  Instruction(opname='COPY_FREE_VARS', opcode=62, arg=2, argval=2, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=None, label=None, positions=None),
+  Instruction(opname='MAKE_CELL', opcode=94, arg=0, argval='c', argrepr='c', offset=2, start_offset=2, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='MAKE_CELL', opcode=94, arg=1, argval='d', argrepr='d', offset=4, start_offset=4, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=6, start_offset=6, starts_line=True, line_number=2, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=2, argval=(5, 6), argrepr='(5, 6)', offset=8, start_offset=8, starts_line=True, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=3, argval='a', argrepr='a', offset=10, start_offset=10, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=4, argval='b', argrepr='b', offset=12, start_offset=12, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='c', argrepr='c', offset=14, start_offset=14, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=1, argval='d', argrepr='d', offset=16, start_offset=16, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='BUILD_TUPLE', opcode=52, arg=4, argval=4, argrepr='', offset=18, start_offset=18, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=1, argval=code_object_inner, argrepr=repr(code_object_inner), offset=20, start_offset=20, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='MAKE_FUNCTION', opcode=26, arg=None, argval=None, argrepr='', offset=22, start_offset=22, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=106, arg=8, argval=8, argrepr='closure', offset=24, start_offset=24, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=106, arg=1, argval=1, argrepr='defaults', offset=26, start_offset=26, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='STORE_FAST', opcode=110, arg=2, argval='inner', argrepr='inner', offset=28, start_offset=28, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=1, argval='print', argrepr='print + NULL', offset=30, start_offset=30, starts_line=True, line_number=5, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=3, argval='a', argrepr='a', offset=40, start_offset=40, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=4, argval='b', argrepr='b', offset=42, start_offset=42, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=0, argval='c', argrepr='c', offset=44, start_offset=44, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=1, argval='d', argrepr='d', offset=46, start_offset=46, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=4, argval=4, argrepr='', offset=48, start_offset=48, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=56, start_offset=56, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=2, argval='inner', argrepr='inner', offset=58, start_offset=58, starts_line=True, line_number=6, label=None, positions=None),
+  Instruction(opname='RETURN_VALUE', opcode=36, arg=None, argval=None, argrepr='', offset=60, start_offset=60, starts_line=False, line_number=6, label=None, positions=None),
 ]
 
 expected_opinfo_inner = [
-  Instruction(opname='COPY_FREE_VARS', opcode=149, arg=4, argval=4, argrepr='', offset=0, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RESUME', opcode=151, arg=0, argval=0, argrepr='', offset=2, starts_line=3, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='NULL + print', offset=4, starts_line=4, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=2, argval='a', argrepr='a', offset=14, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=3, argval='b', argrepr='b', offset=16, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=4, argval='c', argrepr='c', offset=18, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_DEREF', opcode=137, arg=5, argval='d', argrepr='d', offset=20, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='e', argrepr='e', offset=22, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=1, argval='f', argrepr='f', offset=24, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=6, argval=6, argrepr='', offset=26, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=34, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RETURN_CONST', opcode=121, arg=0, argval=None, argrepr='None', offset=36, starts_line=None, is_jump_target=False, positions=None),
+  Instruction(opname='COPY_FREE_VARS', opcode=62, arg=4, argval=4, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=None, label=None, positions=None),
+  Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=2, start_offset=2, starts_line=True, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=1, argval='print', argrepr='print + NULL', offset=4, start_offset=4, starts_line=True, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=2, argval='a', argrepr='a', offset=14, start_offset=14, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=3, argval='b', argrepr='b', offset=16, start_offset=16, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=4, argval='c', argrepr='c', offset=18, start_offset=18, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_DEREF', opcode=84, arg=5, argval='d', argrepr='d', offset=20, start_offset=20, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_FAST_LOAD_FAST', opcode=88, arg=1, argval=('e', 'f'), argrepr='e, f', offset=22, start_offset=22, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=6, argval=6, argrepr='', offset=24, start_offset=24, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=32, start_offset=32, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='RETURN_CONST', opcode=103, arg=0, argval=None, argrepr='None', offset=34, start_offset=34, starts_line=False, line_number=4, label=None, positions=None),
 ]
 
 expected_opinfo_jumpy = [
-  Instruction(opname='RESUME', opcode=151, arg=0, argval=0, argrepr='', offset=0, starts_line=1, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='range', argrepr='NULL + range', offset=2, starts_line=3, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=10, argrepr='10', offset=12, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=14, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='GET_ITER', opcode=68, arg=None, argval=None, argrepr='', offset=22, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='FOR_ITER', opcode=93, arg=26, argval=80, argrepr='to 80', offset=24, starts_line=None, is_jump_target=True, positions=None),
-  Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=28, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=30, starts_line=4, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=40, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=42, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=50, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=52, starts_line=5, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=54, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='COMPARE_OP', opcode=107, arg=2, argval='<', argrepr='<', offset=56, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=1, argval=64, argrepr='to 64', offset=60, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_BACKWARD', opcode=140, arg=20, argval=24, argrepr='to 24', offset=62, starts_line=6, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=64, starts_line=7, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=66, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='COMPARE_OP', opcode=107, arg=68, argval='>', argrepr='>', offset=68, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_JUMP_IF_TRUE', opcode=115, arg=1, argval=76, argrepr='to 76', offset=72, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_BACKWARD', opcode=140, arg=26, argval=24, argrepr='to 24', offset=74, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=76, starts_line=8, is_jump_target=True, positions=None),
-  Instruction(opname='JUMP_FORWARD', opcode=110, arg=12, argval=104, argrepr='to 104', offset=78, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='END_FOR', opcode=4, arg=None, argval=None, argrepr='', offset=80, starts_line=3, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=82, starts_line=10, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=92, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=94, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=102, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST_CHECK', opcode=127, arg=0, argval='i', argrepr='i', offset=104, starts_line=11, is_jump_target=True, positions=None),
-  Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=31, argval=170, argrepr='to 170', offset=106, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=108, starts_line=12, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=118, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=120, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=128, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=130, starts_line=13, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=132, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='BINARY_OP', opcode=122, arg=23, argval=23, argrepr='-=', offset=134, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=138, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=140, starts_line=14, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=142, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='COMPARE_OP', opcode=107, arg=68, argval='>', argrepr='>', offset=144, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=1, argval=152, argrepr='to 152', offset=148, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_BACKWARD', opcode=140, arg=24, argval=104, argrepr='to 104', offset=150, starts_line=15, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=152, starts_line=16, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=154, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='COMPARE_OP', opcode=107, arg=2, argval='<', argrepr='<', offset=156, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=1, argval=164, argrepr='to 164', offset=160, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_FORWARD', opcode=110, arg=14, argval=192, argrepr='to 192', offset=162, starts_line=17, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=164, starts_line=11, is_jump_target=True, positions=None),
-  Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=1, argval=170, argrepr='to 170', offset=166, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_BACKWARD', opcode=140, arg=31, argval=108, argrepr='to 108', offset=168, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=170, starts_line=19, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=6, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=180, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=182, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=190, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='NOP', opcode=9, arg=None, argval=None, argrepr='', offset=192, starts_line=20, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=194, starts_line=21, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval=0, argrepr='0', offset=196, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='BINARY_OP', opcode=122, arg=11, argval=11, argrepr='/', offset=198, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=202, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=204, starts_line=25, is_jump_target=False, positions=None),
-  Instruction(opname='BEFORE_WITH', opcode=53, arg=None, argval=None, argrepr='', offset=206, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='STORE_FAST', opcode=125, arg=1, argval='dodgy', argrepr='dodgy', offset=208, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=210, starts_line=26, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=8, argval='Never reach this', argrepr="'Never reach this'", offset=220, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=222, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=230, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=232, starts_line=25, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=234, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=236, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=2, argval=2, argrepr='', offset=238, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=246, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=248, starts_line=28, is_jump_target=True, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=258, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=260, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=268, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RETURN_CONST', opcode=121, arg=0, argval=None, argrepr='None', offset=270, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='PUSH_EXC_INFO', opcode=35, arg=None, argval=None, argrepr='', offset=272, starts_line=25, is_jump_target=False, positions=None),
-  Instruction(opname='WITH_EXCEPT_START', opcode=49, arg=None, argval=None, argrepr='', offset=274, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_JUMP_IF_TRUE', opcode=115, arg=1, argval=280, argrepr='to 280', offset=276, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RERAISE', opcode=119, arg=2, argval=2, argrepr='', offset=278, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=280, starts_line=None, is_jump_target=True, positions=None),
-  Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=282, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=284, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=286, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_BACKWARD', opcode=140, arg=21, argval=248, argrepr='to 248', offset=288, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=290, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=292, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=294, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='PUSH_EXC_INFO', opcode=35, arg=None, argval=None, argrepr='', offset=296, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=4, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=298, starts_line=22, is_jump_target=False, positions=None),
-  Instruction(opname='CHECK_EXC_MATCH', opcode=36, arg=None, argval=None, argrepr='', offset=308, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=14, argval=340, argrepr='to 340', offset=310, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=312, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=314, starts_line=23, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=324, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=326, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=334, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=336, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='JUMP_BACKWARD', opcode=140, arg=46, argval=248, argrepr='to 248', offset=338, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RERAISE', opcode=119, arg=0, argval=0, argrepr='', offset=340, starts_line=22, is_jump_target=True, positions=None),
-  Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=342, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=344, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=346, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='PUSH_EXC_INFO', opcode=35, arg=None, argval=None, argrepr='', offset=348, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_GLOBAL', opcode=116, arg=3, argval='print', argrepr='NULL + print', offset=350, starts_line=28, is_jump_target=False, positions=None),
-  Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=360, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='CALL', opcode=171, arg=1, argval=1, argrepr='', offset=362, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=370, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RERAISE', opcode=119, arg=0, argval=0, argrepr='', offset=372, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='COPY', opcode=120, arg=3, argval=3, argrepr='', offset=374, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=376, starts_line=None, is_jump_target=False, positions=None),
-  Instruction(opname='RERAISE', opcode=119, arg=1, argval=1, argrepr='', offset=378, starts_line=None, is_jump_target=False, positions=None),
+  Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=1, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=1, argval='range', argrepr='range + NULL', offset=2, start_offset=2, starts_line=True, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=1, argval=10, argrepr='10', offset=12, start_offset=12, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=14, start_offset=14, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='GET_ITER', opcode=19, arg=None, argval=None, argrepr='', offset=22, start_offset=22, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='FOR_ITER', opcode=72, arg=30, argval=88, argrepr='to L4', offset=24, start_offset=24, starts_line=False, line_number=3, label=1, positions=None),
+  Instruction(opname='STORE_FAST', opcode=110, arg=0, argval='i', argrepr='i', offset=28, start_offset=28, starts_line=False, line_number=3, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=30, start_offset=30, starts_line=True, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=40, start_offset=40, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=42, start_offset=42, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=50, start_offset=50, starts_line=False, line_number=4, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=52, start_offset=52, starts_line=True, line_number=5, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=2, argval=4, argrepr='4', offset=54, start_offset=54, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='COMPARE_OP', opcode=58, arg=18, argval='<', argrepr='bool(<)', offset=56, start_offset=56, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_FALSE', opcode=97, arg=2, argval=68, argrepr='to L2', offset=60, start_offset=60, starts_line=False, line_number=5, label=None, positions=None),
+  Instruction(opname='JUMP_BACKWARD', opcode=77, arg=22, argval=24, argrepr='to L1', offset=64, start_offset=64, starts_line=True, line_number=6, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=68, start_offset=68, starts_line=True, line_number=7, label=2, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=3, argval=6, argrepr='6', offset=70, start_offset=70, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='COMPARE_OP', opcode=58, arg=148, argval='>', argrepr='bool(>)', offset=72, start_offset=72, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_TRUE', opcode=100, arg=2, argval=84, argrepr='to L3', offset=76, start_offset=76, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='JUMP_BACKWARD', opcode=77, arg=30, argval=24, argrepr='to L1', offset=80, start_offset=80, starts_line=False, line_number=7, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=84, start_offset=84, starts_line=True, line_number=8, label=3, positions=None),
+  Instruction(opname='JUMP_FORWARD', opcode=79, arg=12, argval=112, argrepr='to L5', offset=86, start_offset=86, starts_line=False, line_number=8, label=None, positions=None),
+  Instruction(opname='END_FOR', opcode=11, arg=None, argval=None, argrepr='', offset=88, start_offset=88, starts_line=True, line_number=3, label=4, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=90, start_offset=90, starts_line=True, line_number=10, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=4, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=100, start_offset=100, starts_line=False, line_number=10, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=102, start_offset=102, starts_line=False, line_number=10, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=110, start_offset=110, starts_line=False, line_number=10, label=None, positions=None),
+  Instruction(opname='LOAD_FAST_CHECK', opcode=87, arg=0, argval='i', argrepr='i', offset=112, start_offset=112, starts_line=True, line_number=11, label=5, positions=None),
+  Instruction(opname='TO_BOOL', opcode=40, arg=None, argval=None, argrepr='', offset=114, start_offset=114, starts_line=False, line_number=11, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_FALSE', opcode=97, arg=40, argval=206, argrepr='to L9', offset=122, start_offset=122, starts_line=False, line_number=11, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=126, start_offset=126, starts_line=True, line_number=12, label=6, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=136, start_offset=136, starts_line=False, line_number=12, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=138, start_offset=138, starts_line=False, line_number=12, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=146, start_offset=146, starts_line=False, line_number=12, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=148, start_offset=148, starts_line=True, line_number=13, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=5, argval=1, argrepr='1', offset=150, start_offset=150, starts_line=False, line_number=13, label=None, positions=None),
+  Instruction(opname='BINARY_OP', opcode=45, arg=23, argval=23, argrepr='-=', offset=152, start_offset=152, starts_line=False, line_number=13, label=None, positions=None),
+  Instruction(opname='STORE_FAST', opcode=110, arg=0, argval='i', argrepr='i', offset=156, start_offset=156, starts_line=False, line_number=13, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=158, start_offset=158, starts_line=True, line_number=14, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=3, argval=6, argrepr='6', offset=160, start_offset=160, starts_line=False, line_number=14, label=None, positions=None),
+  Instruction(opname='COMPARE_OP', opcode=58, arg=148, argval='>', argrepr='bool(>)', offset=162, start_offset=162, starts_line=False, line_number=14, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_FALSE', opcode=97, arg=2, argval=174, argrepr='to L7', offset=166, start_offset=166, starts_line=False, line_number=14, label=None, positions=None),
+  Instruction(opname='JUMP_BACKWARD', opcode=77, arg=31, argval=112, argrepr='to L5', offset=170, start_offset=170, starts_line=True, line_number=15, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=174, start_offset=174, starts_line=True, line_number=16, label=7, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=2, argval=4, argrepr='4', offset=176, start_offset=176, starts_line=False, line_number=16, label=None, positions=None),
+  Instruction(opname='COMPARE_OP', opcode=58, arg=18, argval='<', argrepr='bool(<)', offset=178, start_offset=178, starts_line=False, line_number=16, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_FALSE', opcode=97, arg=1, argval=188, argrepr='to L8', offset=182, start_offset=182, starts_line=False, line_number=16, label=None, positions=None),
+  Instruction(opname='JUMP_FORWARD', opcode=79, arg=20, argval=228, argrepr='to L10', offset=186, start_offset=186, starts_line=True, line_number=17, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=188, start_offset=188, starts_line=True, line_number=11, label=8, positions=None),
+  Instruction(opname='TO_BOOL', opcode=40, arg=None, argval=None, argrepr='', offset=190, start_offset=190, starts_line=False, line_number=11, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_FALSE', opcode=97, arg=2, argval=206, argrepr='to L9', offset=198, start_offset=198, starts_line=False, line_number=11, label=None, positions=None),
+  Instruction(opname='JUMP_BACKWARD', opcode=77, arg=40, argval=126, argrepr='to L6', offset=202, start_offset=202, starts_line=False, line_number=11, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=206, start_offset=206, starts_line=True, line_number=19, label=9, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=6, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=216, start_offset=216, starts_line=False, line_number=19, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=218, start_offset=218, starts_line=False, line_number=19, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=226, start_offset=226, starts_line=False, line_number=19, label=None, positions=None),
+  Instruction(opname='NOP', opcode=30, arg=None, argval=None, argrepr='', offset=228, start_offset=228, starts_line=True, line_number=20, label=10, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=5, argval=1, argrepr='1', offset=230, start_offset=230, starts_line=True, line_number=21, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=7, argval=0, argrepr='0', offset=232, start_offset=232, starts_line=False, line_number=21, label=None, positions=None),
+  Instruction(opname='BINARY_OP', opcode=45, arg=11, argval=11, argrepr='/', offset=234, start_offset=234, starts_line=False, line_number=21, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=238, start_offset=238, starts_line=False, line_number=21, label=None, positions=None),
+  Instruction(opname='LOAD_FAST', opcode=85, arg=0, argval='i', argrepr='i', offset=240, start_offset=240, starts_line=True, line_number=25, label=None, positions=None),
+  Instruction(opname='BEFORE_WITH', opcode=2, arg=None, argval=None, argrepr='', offset=242, start_offset=242, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='STORE_FAST', opcode=110, arg=1, argval='dodgy', argrepr='dodgy', offset=244, start_offset=244, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=246, start_offset=246, starts_line=True, line_number=26, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=8, argval='Never reach this', argrepr="'Never reach this'", offset=256, start_offset=256, starts_line=False, line_number=26, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=258, start_offset=258, starts_line=False, line_number=26, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=266, start_offset=266, starts_line=False, line_number=26, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=0, argval=None, argrepr='None', offset=268, start_offset=268, starts_line=True, line_number=25, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=0, argval=None, argrepr='None', offset=270, start_offset=270, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=0, argval=None, argrepr='None', offset=272, start_offset=272, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=2, argval=2, argrepr='', offset=274, start_offset=274, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=282, start_offset=282, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=284, start_offset=284, starts_line=True, line_number=28, label=11, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=294, start_offset=294, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=296, start_offset=296, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=304, start_offset=304, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='RETURN_CONST', opcode=103, arg=0, argval=None, argrepr='None', offset=306, start_offset=306, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='PUSH_EXC_INFO', opcode=33, arg=None, argval=None, argrepr='', offset=308, start_offset=308, starts_line=True, line_number=25, label=None, positions=None),
+  Instruction(opname='WITH_EXCEPT_START', opcode=44, arg=None, argval=None, argrepr='', offset=310, start_offset=310, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='TO_BOOL', opcode=40, arg=None, argval=None, argrepr='', offset=312, start_offset=312, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_TRUE', opcode=100, arg=1, argval=326, argrepr='to L12', offset=320, start_offset=320, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='RERAISE', opcode=102, arg=2, argval=2, argrepr='', offset=324, start_offset=324, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=326, start_offset=326, starts_line=False, line_number=25, label=12, positions=None),
+  Instruction(opname='POP_EXCEPT', opcode=31, arg=None, argval=None, argrepr='', offset=328, start_offset=328, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=330, start_offset=330, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=332, start_offset=332, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='JUMP_BACKWARD', opcode=77, arg=27, argval=284, argrepr='to L11', offset=334, start_offset=334, starts_line=False, line_number=25, label=None, positions=None),
+  Instruction(opname='COPY', opcode=61, arg=3, argval=3, argrepr='', offset=338, start_offset=338, starts_line=True, line_number=None, label=None, positions=None),
+  Instruction(opname='POP_EXCEPT', opcode=31, arg=None, argval=None, argrepr='', offset=340, start_offset=340, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='RERAISE', opcode=102, arg=1, argval=1, argrepr='', offset=342, start_offset=342, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='PUSH_EXC_INFO', opcode=33, arg=None, argval=None, argrepr='', offset=344, start_offset=344, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=4, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=346, start_offset=346, starts_line=True, line_number=22, label=None, positions=None),
+  Instruction(opname='CHECK_EXC_MATCH', opcode=7, arg=None, argval=None, argrepr='', offset=356, start_offset=356, starts_line=False, line_number=22, label=None, positions=None),
+  Instruction(opname='POP_JUMP_IF_FALSE', opcode=97, arg=15, argval=392, argrepr='to L13', offset=358, start_offset=358, starts_line=False, line_number=22, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=362, start_offset=362, starts_line=False, line_number=22, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=364, start_offset=364, starts_line=True, line_number=23, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=9, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=374, start_offset=374, starts_line=False, line_number=23, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=376, start_offset=376, starts_line=False, line_number=23, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=384, start_offset=384, starts_line=False, line_number=23, label=None, positions=None),
+  Instruction(opname='POP_EXCEPT', opcode=31, arg=None, argval=None, argrepr='', offset=386, start_offset=386, starts_line=False, line_number=23, label=None, positions=None),
+  Instruction(opname='JUMP_BACKWARD', opcode=77, arg=54, argval=284, argrepr='to L11', offset=388, start_offset=388, starts_line=False, line_number=23, label=None, positions=None),
+  Instruction(opname='RERAISE', opcode=102, arg=0, argval=0, argrepr='', offset=392, start_offset=392, starts_line=True, line_number=22, label=13, positions=None),
+  Instruction(opname='COPY', opcode=61, arg=3, argval=3, argrepr='', offset=394, start_offset=394, starts_line=True, line_number=None, label=None, positions=None),
+  Instruction(opname='POP_EXCEPT', opcode=31, arg=None, argval=None, argrepr='', offset=396, start_offset=396, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='RERAISE', opcode=102, arg=1, argval=1, argrepr='', offset=398, start_offset=398, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='PUSH_EXC_INFO', opcode=33, arg=None, argval=None, argrepr='', offset=400, start_offset=400, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='LOAD_GLOBAL', opcode=91, arg=3, argval='print', argrepr='print + NULL', offset=402, start_offset=402, starts_line=True, line_number=28, label=None, positions=None),
+  Instruction(opname='LOAD_CONST', opcode=83, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=412, start_offset=412, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='CALL', opcode=53, arg=1, argval=1, argrepr='', offset=414, start_offset=414, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='POP_TOP', opcode=32, arg=None, argval=None, argrepr='', offset=422, start_offset=422, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='RERAISE', opcode=102, arg=0, argval=0, argrepr='', offset=424, start_offset=424, starts_line=False, line_number=28, label=None, positions=None),
+  Instruction(opname='COPY', opcode=61, arg=3, argval=3, argrepr='', offset=426, start_offset=426, starts_line=True, line_number=None, label=None, positions=None),
+  Instruction(opname='POP_EXCEPT', opcode=31, arg=None, argval=None, argrepr='', offset=428, start_offset=428, starts_line=False, line_number=None, label=None, positions=None),
+  Instruction(opname='RERAISE', opcode=102, arg=1, argval=1, argrepr='', offset=430, start_offset=430, starts_line=False, line_number=None, label=None, positions=None),
 ]
 
 # One last piece of inspect fodder to check the default line number handling
 def simple(): pass
 expected_opinfo_simple = [
-  Instruction(opname='RESUME', opcode=151, arg=0, argval=0, argrepr='', offset=0, starts_line=simple.__code__.co_firstlineno, is_jump_target=False, positions=None),
-  Instruction(opname='RETURN_CONST', opcode=121, arg=0, argval=None, argrepr='None', offset=2, starts_line=None, is_jump_target=False),
+  Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=simple.__code__.co_firstlineno, label=None, positions=None),
+  Instruction(opname='RETURN_CONST', opcode=103, arg=0, argval=None, argrepr='None', offset=2, start_offset=2, starts_line=False, line_number=simple.__code__.co_firstlineno, label=None),
 ]
 
 
@@ -1790,6 +1785,12 @@ def __init__(self, *args):
         super().__init__(*args)
         self.maxDiff = None
 
+    def test_instruction_str(self):
+        # smoke test for __str__
+        instrs = dis.get_instructions(simple)
+        for instr in instrs:
+            str(instr)
+
     def test_default_first_line(self):
         actual = dis.get_instructions(simple)
         self.assertInstructionsEqual(list(actual), expected_opinfo_simple)
@@ -1883,13 +1884,177 @@ def roots(a, b, c):
                         if show_caches or op != cache_opcode
                     ]
                     dis_positions = [
-                        instruction.positions
+                        None if instruction.positions is None else (
+                            instruction.positions.lineno,
+                            instruction.positions.end_lineno,
+                            instruction.positions.col_offset,
+                            instruction.positions.end_col_offset,
+                        )
                         for instruction in dis.get_instructions(
                             code, adaptive=adaptive, show_caches=show_caches
                         )
                     ]
                     self.assertEqual(co_positions, dis_positions)
 
+    def test_oparg_alias(self):
+        instruction = Instruction(opname="NOP", opcode=dis.opmap["NOP"], arg=None, argval=None,
+                                  argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
+                                  positions=None)
+        self.assertEqual(instruction.arg, instruction.oparg)
+
+    def test_show_caches_with_label(self):
+        def f(x, y, z):
+            if x:
+                res = y
+            else:
+                res = z
+            return res
+
+        output = io.StringIO()
+        dis.dis(f.__code__, file=output, show_caches=True)
+        self.assertIn("L1:", output.getvalue())
+
+    def test_baseopname_and_baseopcode(self):
+        # Standard instructions
+        for name, code in dis.opmap.items():
+            instruction = Instruction(opname=name, opcode=code, arg=None, argval=None, argrepr='', offset=0,
+                                      start_offset=0, starts_line=True, line_number=1, label=None, positions=None)
+            baseopname = instruction.baseopname
+            baseopcode = instruction.baseopcode
+            self.assertIsNotNone(baseopname)
+            self.assertIsNotNone(baseopcode)
+            self.assertEqual(name, baseopname)
+            self.assertEqual(code, baseopcode)
+
+        # Specialized instructions
+        for name in opcode._specialized_opmap:
+            instruction = Instruction(opname=name, opcode=dis._all_opmap[name], arg=None, argval=None, argrepr='',
+                                      offset=0, start_offset=0, starts_line=True, line_number=1, label=None, positions=None)
+            baseopname = instruction.baseopname
+            baseopcode = instruction.baseopcode
+            self.assertIn(name, opcode._specializations[baseopname])
+            self.assertEqual(opcode.opmap[baseopname], baseopcode)
+
+    def test_jump_target(self):
+        # Non-jump instructions should return None
+        instruction = Instruction(opname="NOP", opcode=dis.opmap["NOP"], arg=None, argval=None,
+                                  argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
+                                  positions=None)
+        self.assertIsNone(instruction.jump_target)
+
+        delta = 100
+        instruction = Instruction(opname="JUMP_FORWARD", opcode=dis.opmap["JUMP_FORWARD"], arg=delta, argval=delta,
+                                  argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
+                                  positions=None)
+        self.assertEqual(10 + 2 + 100*2, instruction.jump_target)
+
+        # Test negative deltas
+        instruction = Instruction(opname="JUMP_BACKWARD", opcode=dis.opmap["JUMP_BACKWARD"], arg=delta, argval=delta,
+                                  argrepr='', offset=200, start_offset=200, starts_line=True, line_number=1, label=None,
+                                  positions=None)
+        self.assertEqual(200 + 2 - 100*2 + 2*1, instruction.jump_target)
+
+        # Make sure cache entries are handled
+        instruction = Instruction(opname="SEND", opcode=dis.opmap["SEND"], arg=delta, argval=delta,
+                                  argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
+                                  positions=None)
+        self.assertEqual(10 + 2 + 1*2 + 100*2, instruction.jump_target)
+
+    def test_argval_argrepr(self):
+        def f(opcode, oparg, offset, *init_args):
+            arg_resolver = dis.ArgResolver(*init_args)
+            return arg_resolver.get_argval_argrepr(opcode, oparg, offset)
+
+        offset = 42
+        co_consts = (0, 1, 2, 3)
+        names = {1: 'a', 2: 'b'}
+        varname_from_oparg = lambda i : names[i]
+        labels_map = {24: 1}
+        args = (offset, co_consts, names, varname_from_oparg, labels_map)
+        self.assertEqual(f(opcode.opmap["POP_TOP"], None, *args), (None, ''))
+        self.assertEqual(f(opcode.opmap["LOAD_CONST"], 1, *args), (1, '1'))
+        self.assertEqual(f(opcode.opmap["LOAD_GLOBAL"], 2, *args), ('a', 'a'))
+        self.assertEqual(f(opcode.opmap["JUMP_BACKWARD"], 11, *args), (24, 'to L1'))
+        self.assertEqual(f(opcode.opmap["COMPARE_OP"], 3, *args), ('<', '<'))
+        self.assertEqual(f(opcode.opmap["SET_FUNCTION_ATTRIBUTE"], 2, *args), (2, 'kwdefaults'))
+        self.assertEqual(f(opcode.opmap["BINARY_OP"], 3, *args), (3, '<<'))
+        self.assertEqual(f(opcode.opmap["CALL_INTRINSIC_1"], 2, *args), (2, 'INTRINSIC_IMPORT_STAR'))
+
+    def test_start_offset(self):
+        # When no extended args are present,
+        # start_offset should be equal to offset
+        instructions = list(dis.Bytecode(_f))
+        for instruction in instructions:
+            self.assertEqual(instruction.offset, instruction.start_offset)
+
+        code = bytes([
+            opcode.opmap["LOAD_FAST"], 0x00,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
+        ])
+        jump = list(dis._get_instructions_bytes(code))[-1]
+        self.assertEqual(4, jump.offset)
+        self.assertEqual(2, jump.start_offset)
+
+        code = bytes([
+            opcode.opmap["LOAD_FAST"], 0x00,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
+            opcode.opmap["CACHE"], 0x00,
+        ])
+        jump = list(dis._get_instructions_bytes(code))[-1]
+        self.assertEqual(8, jump.offset)
+        self.assertEqual(2, jump.start_offset)
+
+        code = bytes([
+            opcode.opmap["LOAD_FAST"], 0x00,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["EXTENDED_ARG"], 0x01,
+            opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
+            opcode.opmap["CACHE"], 0x00,
+        ])
+        instructions = list(dis._get_instructions_bytes(code))
+        # 1st jump
+        self.assertEqual(4, instructions[2].offset)
+        self.assertEqual(2, instructions[2].start_offset)
+        # 2nd jump
+        self.assertEqual(14, instructions[6].offset)
+        self.assertEqual(8, instructions[6].start_offset)
+
+    def test_cache_offset_and_end_offset(self):
+        code = bytes([
+            opcode.opmap["LOAD_GLOBAL"], 0x01,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["LOAD_FAST"], 0x00,
+            opcode.opmap["CALL"], 0x01,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["CACHE"], 0x00,
+            opcode.opmap["CACHE"], 0x00
+        ])
+        instructions = list(dis._get_instructions_bytes(code))
+        self.assertEqual(2, instructions[0].cache_offset)
+        self.assertEqual(10, instructions[0].end_offset)
+        self.assertEqual(12, instructions[1].cache_offset)
+        self.assertEqual(12, instructions[1].end_offset)
+        self.assertEqual(14, instructions[2].cache_offset)
+        self.assertEqual(20, instructions[2].end_offset)
+
+        # end_offset of the previous instruction should be equal to the
+        # start_offset of the following instruction
+        instructions = list(dis.Bytecode(self.test_cache_offset_and_end_offset))
+        for prev, curr in zip(instructions, instructions[1:]):
+            self.assertEqual(prev.end_offset, curr.start_offset)
+
+
 # get_instructions has its own tests above, so can rely on it to validate
 # the object oriented API
 class BytecodeTests(InstructionTestCase, DisTestBase):
@@ -1946,7 +2111,7 @@ def test_from_traceback_dis(self):
         self.maxDiff = None
         tb = get_tb()
         b = dis.Bytecode.from_traceback(tb)
-        self.assertEqual(self.strip_offsets(b.dis()), dis_traceback)
+        self.assertEqual(b.dis(), dis_traceback)
 
     @requires_debug_ranges()
     def test_bytecode_co_positions(self):
diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py
index 542fcdb5cf6f66..36328f8086c7ad 100644
--- a/Lib/test/test_doctest.py
+++ b/Lib/test/test_doctest.py
@@ -102,14 +102,13 @@ def a_classmethod(cls, v):
 
     a_class_attribute = 42
 
-    @classmethod
-    @property
-    def a_classmethod_property(cls):
+    @functools.cached_property
+    def a_cached_property(self):
         """
-        >>> print(SampleClass.a_classmethod_property)
-        42
+        >>> print(SampleClass(29).get())
+        29
         """
-        return cls.a_class_attribute
+        return "hello"
 
     class NestedClass:
         """
@@ -414,6 +413,23 @@ def test_DocTest(): r"""
     False
     >>> test != other_test
     True
+    >>> test < other_test
+    False
+    >>> other_test < test
+    True
+
+Test comparison with lineno None on one side
+
+    >>> no_lineno = parser.get_doctest(docstring, globs, 'some_test',
+    ...                               'some_test', None)
+    >>> test.lineno is None
+    False
+    >>> no_lineno.lineno is None
+    True
+    >>> test < no_lineno
+    False
+    >>> no_lineno < test
+    True
 
 Compare `DocTestCase`:
 
@@ -515,8 +531,8 @@ def basics(): r"""
      3  SampleClass.NestedClass
      1  SampleClass.NestedClass.__init__
      1  SampleClass.__init__
+     1  SampleClass.a_cached_property
      2  SampleClass.a_classmethod
-     1  SampleClass.a_classmethod_property
      1  SampleClass.a_property
      1  SampleClass.a_staticmethod
      1  SampleClass.double
@@ -571,8 +587,8 @@ def basics(): r"""
      3  some_module.SampleClass.NestedClass
      1  some_module.SampleClass.NestedClass.__init__
      1  some_module.SampleClass.__init__
+     1  some_module.SampleClass.a_cached_property
      2  some_module.SampleClass.a_classmethod
-     1  some_module.SampleClass.a_classmethod_property
      1  some_module.SampleClass.a_property
      1  some_module.SampleClass.a_staticmethod
      1  some_module.SampleClass.double
@@ -613,8 +629,8 @@ def basics(): r"""
      3  SampleClass.NestedClass
      1  SampleClass.NestedClass.__init__
      1  SampleClass.__init__
+     1  SampleClass.a_cached_property
      2  SampleClass.a_classmethod
-     1  SampleClass.a_classmethod_property
      1  SampleClass.a_property
      1  SampleClass.a_staticmethod
      1  SampleClass.double
@@ -634,8 +650,8 @@ def basics(): r"""
      0  SampleClass.NestedClass.get
      0  SampleClass.NestedClass.square
      1  SampleClass.__init__
+     1  SampleClass.a_cached_property
      2  SampleClass.a_classmethod
-     1  SampleClass.a_classmethod_property
      1  SampleClass.a_property
      1  SampleClass.a_staticmethod
      1  SampleClass.double
@@ -736,19 +752,49 @@ def non_Python_modules(): r"""
 """
 
 
+class TestDocTest(unittest.TestCase):
+
+    def test_run(self):
+        test = '''
+            >>> 1 + 1
+            11
+            >>> 2 + 3      # doctest: +SKIP
+            "23"
+            >>> 5 + 7
+            57
+        '''
+
+        def myfunc():
+            pass
+        myfunc.__doc__ = test
+
+        # test DocTestFinder.run()
+        test = doctest.DocTestFinder().find(myfunc)[0]
+        with support.captured_stdout():
+            with support.captured_stderr():
+                results = doctest.DocTestRunner(verbose=False).run(test)
+
+        # test TestResults
+        self.assertIsInstance(results, doctest.TestResults)
+        self.assertEqual(results.failed, 2)
+        self.assertEqual(results.attempted, 3)
+        self.assertEqual(results.skipped, 1)
+        self.assertEqual(tuple(results), (2, 3))
+        x, y = results
+        self.assertEqual((x, y), (2, 3))
+
+
 class TestDocTestFinder(unittest.TestCase):
 
     def test_issue35753(self):
         # This import of `call` should trigger issue35753 when
-        # `support.run_doctest` is called due to unwrap failing,
+        # DocTestFinder.find() is called due to inspect.unwrap() failing,
         # however with a patched doctest this should succeed.
         from unittest.mock import call
         dummy_module = types.ModuleType("dummy")
         dummy_module.__dict__['inject_call'] = call
-        try:
-            support.run_doctest(dummy_module, verbosity=True)
-        except ValueError as e:
-            raise support.TestFailed("Doctest unwrap failed") from e
+        finder = doctest.DocTestFinder()
+        self.assertEqual(finder.find(dummy_module), [])
 
     def test_empty_namespace_package(self):
         pkg_name = 'doctest_empty_pkg'
@@ -1287,14 +1333,14 @@ def optionflags(): r"""
 treated as equal:
 
     >>> def f(x):
-    ...     '>>> print(1, 2, 3)\n  1   2\n 3'
+    ...     '\n>>> print(1, 2, 3)\n  1   2\n 3'
 
     >>> # Without the flag:
     >>> test = doctest.DocTestFinder().find(f)[0]
     >>> doctest.DocTestRunner(verbose=False).run(test)
     ... # doctest: +ELLIPSIS
     **********************************************************************
-    File ..., line 2, in f
+    File ..., line 3, in f
     Failed example:
         print(1, 2, 3)
     Expected:
@@ -2876,6 +2922,9 @@ def test_unicode(): """
         Traceback (most recent call last):
           File ...
             exec(compile(example.source, filename, "single",
+            ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+                         compileflags, True), test.globs)
+                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
           File "<doctest foo-bär@baz[0]>", line 1, in <module>
             raise Exception('clé')
         Exception: clé
@@ -3170,25 +3219,173 @@ def test_run_doctestsuite_multiple_times():
     """
 
 
+def test_exception_with_note(note):
+    """
+    >>> test_exception_with_note('Note')
+    Traceback (most recent call last):
+      ...
+    ValueError: Text
+    Note
+
+    >>> test_exception_with_note('Note')  # doctest: +IGNORE_EXCEPTION_DETAIL
+    Traceback (most recent call last):
+      ...
+    ValueError: Text
+    Note
+
+    >>> test_exception_with_note('''Note
+    ... multiline
+    ... example''')
+    Traceback (most recent call last):
+    ValueError: Text
+    Note
+    multiline
+    example
+
+    Different note will fail the test:
+
+    >>> def f(x):
+    ...     r'''
+    ...     >>> exc = ValueError('message')
+    ...     >>> exc.add_note('note')
+    ...     >>> raise exc
+    ...     Traceback (most recent call last):
+    ...     ValueError: message
+    ...     wrong note
+    ...     '''
+    >>> test = doctest.DocTestFinder().find(f)[0]
+    >>> doctest.DocTestRunner(verbose=False).run(test)
+    ... # doctest: +ELLIPSIS
+    **********************************************************************
+    File "...", line 5, in f
+    Failed example:
+        raise exc
+    Expected:
+        Traceback (most recent call last):
+        ValueError: message
+        wrong note
+    Got:
+        Traceback (most recent call last):
+          ...
+        ValueError: message
+        note
+    TestResults(failed=1, attempted=...)
+    """
+    exc = ValueError('Text')
+    exc.add_note(note)
+    raise exc
+
+
+def test_exception_with_multiple_notes():
+    """
+    >>> test_exception_with_multiple_notes()
+    Traceback (most recent call last):
+      ...
+    ValueError: Text
+    One
+    Two
+    """
+    exc = ValueError('Text')
+    exc.add_note('One')
+    exc.add_note('Two')
+    raise exc
+
+
+def test_syntax_error_with_note(cls, multiline=False):
+    """
+    >>> test_syntax_error_with_note(SyntaxError)
+    Traceback (most recent call last):
+      ...
+    SyntaxError: error
+    Note
+
+    >>> test_syntax_error_with_note(SyntaxError)
+    Traceback (most recent call last):
+    SyntaxError: error
+    Note
+
+    >>> test_syntax_error_with_note(SyntaxError)
+    Traceback (most recent call last):
+      ...
+      File "x.py", line 23
+        bad syntax
+    SyntaxError: error
+    Note
+
+    >>> test_syntax_error_with_note(IndentationError)
+    Traceback (most recent call last):
+      ...
+    IndentationError: error
+    Note
+
+    >>> test_syntax_error_with_note(TabError, multiline=True)
+    Traceback (most recent call last):
+      ...
+    TabError: error
+    Note
+    Line
+    """
+    exc = cls("error", ("x.py", 23, None, "bad syntax"))
+    exc.add_note('Note\nLine' if multiline else 'Note')
+    raise exc
+
+
+def test_syntax_error_subclass_from_stdlib():
+    """
+    `ParseError` is a subclass of `SyntaxError`, but it is not a builtin:
+
+    >>> test_syntax_error_subclass_from_stdlib()
+    Traceback (most recent call last):
+      ...
+    xml.etree.ElementTree.ParseError: error
+    error
+    Note
+    Line
+    """
+    from xml.etree.ElementTree import ParseError
+    exc = ParseError("error\nerror")
+    exc.add_note('Note\nLine')
+    raise exc
+
+
+def test_syntax_error_with_incorrect_expected_note():
+    """
+    >>> def f(x):
+    ...     r'''
+    ...     >>> exc = SyntaxError("error", ("x.py", 23, None, "bad syntax"))
+    ...     >>> exc.add_note('note1')
+    ...     >>> exc.add_note('note2')
+    ...     >>> raise exc
+    ...     Traceback (most recent call last):
+    ...     SyntaxError: error
+    ...     wrong note
+    ...     '''
+    >>> test = doctest.DocTestFinder().find(f)[0]
+    >>> doctest.DocTestRunner(verbose=False).run(test)
+    ... # doctest: +ELLIPSIS
+    **********************************************************************
+    File "...", line 6, in f
+    Failed example:
+        raise exc
+    Expected:
+        Traceback (most recent call last):
+        SyntaxError: error
+        wrong note
+    Got:
+        Traceback (most recent call last):
+          ...
+        SyntaxError: error
+        note1
+        note2
+    TestResults(failed=1, attempted=...)
+    """
+
+
 def load_tests(loader, tests, pattern):
     tests.addTest(doctest.DocTestSuite(doctest))
     tests.addTest(doctest.DocTestSuite())
     return tests
 
 
-def test_coverage(coverdir):
-    trace = import_helper.import_module('trace')
-    tracer = trace.Trace(ignoredirs=[sys.base_prefix, sys.base_exec_prefix,],
-                         trace=0, count=1)
-    tracer.run('test_main()')
-    r = tracer.results()
-    print('Writing coverage results...')
-    r.write_results(show_missing=True, summary=True,
-                    coverdir=coverdir)
-
-
 if __name__ == '__main__':
-    if '-c' in sys.argv:
-        test_coverage('/tmp/doctest.cover')
-    else:
-        unittest.main()
+    unittest.main(module='test.test_doctest')
diff --git a/Lib/test/test_dtrace.py b/Lib/test/test_dtrace.py
index 4b971deacc1a5c..e1adf8e9748506 100644
--- a/Lib/test/test_dtrace.py
+++ b/Lib/test/test_dtrace.py
@@ -3,6 +3,7 @@
 import re
 import subprocess
 import sys
+import sysconfig
 import types
 import unittest
 
@@ -173,6 +174,87 @@ class SystemTapOptimizedTests(TraceTests, unittest.TestCase):
     backend = SystemTapBackend()
     optimize_python = 2
 
+class CheckDtraceProbes(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        if sysconfig.get_config_var('WITH_DTRACE'):
+            readelf_major_version, readelf_minor_version = cls.get_readelf_version()
+            if support.verbose:
+                print(f"readelf version: {readelf_major_version}.{readelf_minor_version}")
+        else:
+            raise unittest.SkipTest("CPython must be configured with the --with-dtrace option.")
+
+
+    @staticmethod
+    def get_readelf_version():
+        try:
+            cmd = ["readelf", "--version"]
+            proc = subprocess.Popen(
+                cmd,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                universal_newlines=True,
+            )
+            with proc:
+                version, stderr = proc.communicate()
+
+            if proc.returncode:
+                raise Exception(
+                    f"Command {' '.join(cmd)!r} failed "
+                    f"with exit code {proc.returncode}: "
+                    f"stdout={version!r} stderr={stderr!r}"
+                )
+        except OSError:
+            raise unittest.SkipTest("Couldn't find readelf on the path")
+
+        # Regex to parse:
+        # 'GNU readelf (GNU Binutils) 2.40.0\n' -> 2.40
+        match = re.search(r"^(?:GNU) readelf.*?\b(\d+)\.(\d+)", version)
+        if match is None:
+            raise unittest.SkipTest(f"Unable to parse readelf version: {version}")
+
+        return int(match.group(1)), int(match.group(2))
+
+    def get_readelf_output(self):
+        command = ["readelf", "-n", sys.executable]
+        stdout, _ = subprocess.Popen(
+            command,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            universal_newlines=True,
+        ).communicate()
+        return stdout
+
+    def test_check_probes(self):
+        readelf_output = self.get_readelf_output()
+
+        available_probe_names = [
+            "Name: import__find__load__done",
+            "Name: import__find__load__start",
+            "Name: audit",
+            "Name: gc__start",
+            "Name: gc__done",
+        ]
+
+        for probe_name in available_probe_names:
+            with self.subTest(probe_name=probe_name):
+                self.assertIn(probe_name, readelf_output)
+
+    @unittest.expectedFailure
+    def test_missing_probes(self):
+        readelf_output = self.get_readelf_output()
+
+        # Missing probes will be added in the future.
+        missing_probe_names = [
+            "Name: function__entry",
+            "Name: function__return",
+            "Name: line",
+        ]
+
+        for probe_name in missing_probe_names:
+            with self.subTest(probe_name=probe_name):
+                self.assertIn(probe_name, readelf_output)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_dynamic.py b/Lib/test/test_dynamic.py
index 7e12d428e0fde2..0aa3be6a1bde6a 100644
--- a/Lib/test/test_dynamic.py
+++ b/Lib/test/test_dynamic.py
@@ -145,7 +145,7 @@ def __missing__(self, key):
         code = "lambda: " + "+".join(f"_number_{i}" for i in range(variables))
         sum_func = eval(code, MyGlobals())
         expected = sum(range(variables))
-        # Warm up the the function for quickening (PEP 659)
+        # Warm up the function for quickening (PEP 659)
         for _ in range(30):
             self.assertEqual(sum_func(), expected)
 
diff --git a/Lib/test/test_eintr.py b/Lib/test/test_eintr.py
index 528147802ba47e..49b15f1a2dba92 100644
--- a/Lib/test/test_eintr.py
+++ b/Lib/test/test_eintr.py
@@ -9,6 +9,7 @@
 class EINTRTests(unittest.TestCase):
 
     @unittest.skipUnless(hasattr(signal, "setitimer"), "requires setitimer()")
+    @support.requires_resource('walltime')
     def test_all(self):
         # Run the tester in a sub-process, to make sure there is only one
         # thread (for reliable signal delivery).
diff --git a/Lib/test/test_email/data/msg_47.txt b/Lib/test/test_email/data/msg_47.txt
new file mode 100644
index 00000000000000..bb48b47d96baf8
--- /dev/null
+++ b/Lib/test/test_email/data/msg_47.txt
@@ -0,0 +1,14 @@
+Date: 01 Jan 2001 00:01+0000
+From: arthur@example.example
+MIME-Version: 1.0
+Content-Type: multipart/mixed; boundary=foo
+
+--foo
+Content-Type: text/plain
+bar
+
+--foo
+Content-Type: text/html
+<html><body><p>baz</p></body></html>
+
+--foo--
\ No newline at end of file
diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
index 44b405740c4403..512464f87162cd 100644
--- a/Lib/test/test_email/test_email.py
+++ b/Lib/test/test_email/test_email.py
@@ -38,6 +38,7 @@
 from email import quoprimime
 from email import utils
 
+from test import support
 from test.support import threading_helper
 from test.support.os_helper import unlink
 from test.test_email import openfile, TestEmailBase
@@ -2235,7 +2236,7 @@ def test_multipart_valid_cte_no_defect(self):
                     "\nContent-Transfer-Encoding: {}".format(cte)))
             self.assertEqual(len(msg.defects), 0)
 
-    # test_headerregistry.TestContentTyopeHeader invalid_1 and invalid_2.
+    # test_headerregistry.TestContentTypeHeader invalid_1 and invalid_2.
     def test_invalid_content_type(self):
         eq = self.assertEqual
         neq = self.ndiffAssertEqual
@@ -3319,6 +3320,23 @@ def test_getaddresses(self):
            [('Al Person', 'aperson@dom.ain'),
             ('Bud Person', 'bperson@dom.ain')])
 
+    def test_getaddresses_comma_in_name(self):
+        """GH-106669 regression test."""
+        self.assertEqual(
+            utils.getaddresses(
+                [
+                    '"Bud, Person" <bperson@dom.ain>',
+                    'aperson@dom.ain (Al Person)',
+                    '"Mariusz Felisiak" <to@example.com>',
+                ]
+            ),
+            [
+                ('Bud, Person', 'bperson@dom.ain'),
+                ('Al Person', 'aperson@dom.ain'),
+                ('Mariusz Felisiak', 'to@example.com'),
+            ],
+        )
+
     def test_getaddresses_nasty(self):
         eq = self.assertEqual
         eq(utils.getaddresses(['foo: ;']), [('', '')])
@@ -3341,6 +3359,7 @@ def test_getaddresses_header_obj(self):
         self.assertEqual(addrs[0][1], 'aperson@dom.ain')
 
     @threading_helper.requires_working_threading()
+    @support.requires_resource('cpu')
     def test_make_msgid_collisions(self):
         # Test make_msgid uniqueness, even with multiple threads
         class MsgidsThread(Thread):
@@ -3695,6 +3714,16 @@ def test_bytes_header_parser(self):
         self.assertIsInstance(msg.get_payload(), str)
         self.assertIsInstance(msg.get_payload(decode=True), bytes)
 
+    def test_header_parser_multipart_is_valid(self):
+        # Don't flag valid multipart emails as having defects
+        with openfile('msg_47.txt', encoding="utf-8") as fp:
+            msgdata = fp.read()
+
+        parser = email.parser.Parser(policy=email.policy.default)
+        parsed_msg = parser.parsestr(msgdata, headersonly=True)
+
+        self.assertEqual(parsed_msg.defects, [])
+
     def test_bytes_parser_does_not_close_file(self):
         with openfile('msg_02.txt', 'rb') as fp:
             email.parser.BytesParser().parse(fp)
diff --git a/Lib/test/test_email/test_message.py b/Lib/test/test_email/test_message.py
index 4c754bf40fc300..d3f396f02e7a72 100644
--- a/Lib/test/test_email/test_message.py
+++ b/Lib/test/test_email/test_message.py
@@ -696,14 +696,16 @@ def subtype_as_add(self, method, subtype, outcome):
             self.assertIsNone(part['Content-Disposition'])
 
     class _TestSetRaisingContentManager:
+        class CustomError(Exception):
+            pass
         def set_content(self, msg, content, *args, **kw):
-            raise Exception('test')
+            raise self.CustomError('test')
 
     def test_default_content_manager_for_add_comes_from_policy(self):
         cm = self._TestSetRaisingContentManager()
         m = self.message(policy=self.policy.clone(content_manager=cm))
         for method in ('add_related', 'add_alternative', 'add_attachment'):
-            with self.assertRaises(Exception) as ar:
+            with self.assertRaises(self._TestSetRaisingContentManager.CustomError) as ar:
                 getattr(m, method)('')
             self.assertEqual(str(ar.exception), 'test')
 
diff --git a/Lib/test/test_email/test_utils.py b/Lib/test/test_email/test_utils.py
index 25fa48c5ee217b..c9d973df0a2192 100644
--- a/Lib/test/test_email/test_utils.py
+++ b/Lib/test/test_email/test_utils.py
@@ -5,6 +5,7 @@
 import unittest
 import sys
 import os.path
+import zoneinfo
 
 class DateTimeTests(unittest.TestCase):
 
@@ -142,13 +143,9 @@ def test_localtime_epoch_notz_daylight_false(self):
         t2 = utils.localtime(t0.replace(tzinfo=None))
         self.assertEqual(t1, t2)
 
-    # XXX: Need a more robust test for Olson's tzdata
-    @unittest.skipIf(sys.platform.startswith('win'),
-                     "Windows does not use Olson's TZ database")
-    @unittest.skipUnless(os.path.exists('/usr/share/zoneinfo') or
-                         os.path.exists('/usr/lib/zoneinfo'),
-                         "Can't find the Olson's TZ database")
-    @test.support.run_with_tz('Europe/Kiev')
+    @unittest.skipUnless("Europe/Kyiv" in zoneinfo.available_timezones(),
+                         "Can't find a Kyiv timezone database")
+    @test.support.run_with_tz('Europe/Kyiv')
     def test_variable_tzname(self):
         t0 = datetime.datetime(1984, 1, 1, tzinfo=datetime.timezone.utc)
         t1 = utils.localtime(t0)
diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
index 582392ecddcb91..d2d6c1b61e46f0 100644
--- a/Lib/test/test_embed.py
+++ b/Lib/test/test_embed.py
@@ -1,8 +1,6 @@
 # Run the tests in Programs/_testembed.c (tests for the CPython embedding APIs)
 from test import support
-from test.support import import_helper
-from test.support import os_helper
-from test.support import requires_specialization
+from test.support import import_helper, os_helper, MS_WINDOWS
 import unittest
 
 from collections import namedtuple
@@ -21,11 +19,11 @@
 if not support.has_subprocess_support:
     raise unittest.SkipTest("test module requires subprocess")
 
-MS_WINDOWS = (os.name == 'nt')
 MACOS = (sys.platform == 'darwin')
 PYMEM_ALLOCATOR_NOT_SET = 0
 PYMEM_ALLOCATOR_DEBUG = 2
 PYMEM_ALLOCATOR_MALLOC = 3
+Py_STATS = hasattr(sys, '_stats_on')
 
 # _PyCoreConfig_InitCompatConfig()
 API_COMPAT = 1
@@ -347,7 +345,7 @@ def test_simple_initialization_api(self):
         out, err = self.run_embedded_interpreter("test_repeated_simple_init")
         self.assertEqual(out, 'Finalized\n' * INIT_LOOPS)
 
-    @requires_specialization
+    @support.requires_specialization
     def test_specialized_static_code_gets_unspecialized_at_Py_FINALIZE(self):
         # https://github.com/python/cpython/issues/92031
 
@@ -361,7 +359,7 @@ def is_specialized(f):
                 for instruction in dis.get_instructions(f, adaptive=True):
                     opname = instruction.opname
                     if (
-                        opname in opcode._specialized_instructions
+                        opname in opcode._specialized_opmap
                         # Exclude superinstructions:
                         and "__" not in opname
                     ):
@@ -447,6 +445,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         'use_hash_seed': 0,
         'hash_seed': 0,
         'int_max_str_digits': sys.int_info.default_max_str_digits,
+        'cpu_count': -1,
         'faulthandler': 0,
         'tracemalloc': 0,
         'perf_profiling': 0,
@@ -454,6 +453,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         'code_debug_ranges': 1,
         'show_ref_count': 0,
         'dump_refs': 0,
+        'dump_refs_file': None,
         'malloc_stats': 0,
 
         'filesystem_encoding': GET_DEFAULT_CONFIG,
@@ -503,6 +503,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         'run_command': None,
         'run_module': None,
         'run_filename': None,
+        'sys_path_0': None,
 
         '_install_importlib': 1,
         'check_hash_pycs_mode': 'default',
@@ -512,6 +513,10 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         'safe_path': 0,
         '_is_python_build': IGNORE_CONFIG,
     }
+    if Py_STATS:
+        CONFIG_COMPAT['_pystats'] = 0
+    if support.Py_DEBUG:
+        CONFIG_COMPAT['run_presite'] = None
     if MS_WINDOWS:
         CONFIG_COMPAT.update({
             'legacy_windows_stdio': 0,
@@ -891,10 +896,13 @@ def test_init_from_config(self):
             'module_search_paths': self.IGNORE_CONFIG,
             'safe_path': 1,
             'int_max_str_digits': 31337,
+            'cpu_count': 4321,
 
             'check_hash_pycs_mode': 'always',
             'pathconfig_warnings': 0,
         }
+        if Py_STATS:
+            config['_pystats'] = 1
         self.check_all_configs("test_init_from_config", config, preconfig,
                                api=API_COMPAT)
 
@@ -927,6 +935,8 @@ def test_init_compat_env(self):
             'safe_path': 1,
             'int_max_str_digits': 4567,
         }
+        if Py_STATS:
+            config['_pystats'] = 1
         self.check_all_configs("test_init_compat_env", config, preconfig,
                                api=API_COMPAT)
 
@@ -960,6 +970,8 @@ def test_init_python_env(self):
             'safe_path': 1,
             'int_max_str_digits': 4567,
         }
+        if Py_STATS:
+            config['_pystats'] = 1
         self.check_all_configs("test_init_python_env", config, preconfig,
                                api=API_PYTHON)
 
@@ -1122,6 +1134,7 @@ def test_init_run_main(self):
             'program_name': './python3',
             'run_command': code + '\n',
             'parse_argv': 2,
+            'sys_path_0': '',
         }
         self.check_all_configs("test_init_run_main", config, api=API_PYTHON)
 
@@ -1137,6 +1150,7 @@ def test_init_main(self):
             'run_command': code + '\n',
             'parse_argv': 2,
             '_init_main': 0,
+            'sys_path_0': '',
         }
         self.check_all_configs("test_init_main", config,
                                api=API_PYTHON,
@@ -1703,6 +1717,9 @@ def test_open_code_hook(self):
     def test_audit(self):
         self.run_embedded_interpreter("test_audit")
 
+    def test_audit_tuple(self):
+        self.run_embedded_interpreter("test_audit_tuple")
+
     def test_audit_subinterpreter(self):
         self.run_embedded_interpreter("test_audit_subinterpreter")
 
@@ -1803,6 +1820,22 @@ def test_no_memleak(self):
                 self.assertEqual(refs, 0, out)
                 self.assertEqual(blocks, 0, out)
 
+    @unittest.skipUnless(support.Py_DEBUG,
+                         '-X presite requires a Python debug build')
+    def test_presite(self):
+        cmd = [sys.executable, "-I", "-X", "presite=test.reperf", "-c", "print('cmd')"]
+        proc = subprocess.run(
+            cmd,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            text=True,
+        )
+        self.assertEqual(proc.returncode, 0)
+        out = proc.stdout.strip()
+        self.assertIn("10 times sub", out)
+        self.assertIn("CPU seconds", out)
+        self.assertIn("cmd", out)
+
 
 class StdPrinterTests(EmbeddingTestsMixin, unittest.TestCase):
     # Test PyStdPrinter_Type which is used by _PySys_SetPreliminaryStderr():
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index fb7a016c9007f8..f99d4ca204b5a7 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -18,7 +18,7 @@
 from io import StringIO
 from pickle import dumps, loads, PicklingError, HIGHEST_PROTOCOL
 from test import support
-from test.support import ALWAYS_EQ
+from test.support import ALWAYS_EQ, REPO_ROOT
 from test.support import threading_helper
 from datetime import timedelta
 
@@ -26,13 +26,42 @@
 
 def load_tests(loader, tests, ignore):
     tests.addTests(doctest.DocTestSuite(enum))
-    if os.path.exists('Doc/library/enum.rst'):
+
+    lib_tests = os.path.join(REPO_ROOT, 'Doc/library/enum.rst')
+    if os.path.exists(lib_tests):
+        tests.addTests(doctest.DocFileSuite(
+                lib_tests,
+                module_relative=False,
+                optionflags=doctest.ELLIPSIS|doctest.NORMALIZE_WHITESPACE,
+                ))
+    howto_tests = os.path.join(REPO_ROOT, 'Doc/howto/enum.rst')
+    if os.path.exists(howto_tests):
         tests.addTests(doctest.DocFileSuite(
-                '../../Doc/library/enum.rst',
+                howto_tests,
+                module_relative=False,
                 optionflags=doctest.ELLIPSIS|doctest.NORMALIZE_WHITESPACE,
                 ))
     return tests
 
+def reraise_if_not_enum(*enum_types_or_exceptions):
+    from functools import wraps
+
+    def decorator(func):
+        @wraps(func)
+        def inner(*args, **kwargs):
+            excs = [
+                e
+                for e in enum_types_or_exceptions
+                if isinstance(e, Exception)
+            ]
+            if len(excs) == 1:
+                raise excs[0]
+            elif excs:
+                raise ExceptionGroup('Enum Exceptions', excs)
+            return func(*args, **kwargs)
+        return inner
+    return decorator
+
 MODULE = __name__
 SHORT_MODULE = MODULE.split('.')[-1]
 
@@ -66,30 +95,46 @@ class FlagStooges(Flag):
         LARRY = 1
         CURLY = 2
         MOE = 4
+        BIG = 389
 except Exception as exc:
     FlagStooges = exc
 
-class FlagStoogesWithZero(Flag):
-    NOFLAG = 0
-    LARRY = 1
-    CURLY = 2
-    MOE = 4
+try:
+    class FlagStoogesWithZero(Flag):
+        NOFLAG = 0
+        LARRY = 1
+        CURLY = 2
+        MOE = 4
+        BIG = 389
+except Exception as exc:
+    FlagStoogesWithZero = exc
 
-class IntFlagStooges(IntFlag):
-    LARRY = 1
-    CURLY = 2
-    MOE = 4
+try:
+    class IntFlagStooges(IntFlag):
+        LARRY = 1
+        CURLY = 2
+        MOE = 4
+        BIG = 389
+except Exception as exc:
+    IntFlagStooges = exc
 
-class IntFlagStoogesWithZero(IntFlag):
-    NOFLAG = 0
-    LARRY = 1
-    CURLY = 2
-    MOE = 4
+try:
+    class IntFlagStoogesWithZero(IntFlag):
+        NOFLAG = 0
+        LARRY = 1
+        CURLY = 2
+        MOE = 4
+        BIG = 389
+except Exception as exc:
+    IntFlagStoogesWithZero = exc
 
 # for pickle test and subclass tests
-class Name(StrEnum):
-    BDFL = 'Guido van Rossum'
-    FLUFL = 'Barry Warsaw'
+try:
+    class Name(StrEnum):
+        BDFL = 'Guido van Rossum'
+        FLUFL = 'Barry Warsaw'
+except Exception as exc:
+    Name = exc
 
 try:
     Question = Enum('Question', 'who what when where why', module=__name__)
@@ -131,7 +176,7 @@ class TestHelpers(unittest.TestCase):
 
     sunder_names = '_bad_', '_good_', '_what_ho_'
     dunder_names = '__mal__', '__bien__', '__que_que__'
-    private_names = '_MyEnum__private', '_MyEnum__still_private'
+    private_names = '_MyEnum__private', '_MyEnum__still_private', '_MyEnum___triple_private'
     private_and_sunder_names = '_MyEnum__private_', '_MyEnum__also_private_'
     random_names = 'okay', '_semi_private', '_weird__', '_MyEnum__'
 
@@ -195,26 +240,35 @@ def __get__(self, instance, ownerclass):
 
 # for global repr tests
 
-@enum.global_enum
-class HeadlightsK(IntFlag, boundary=enum.KEEP):
-    OFF_K = 0
-    LOW_BEAM_K = auto()
-    HIGH_BEAM_K = auto()
-    FOG_K = auto()
+try:
+    @enum.global_enum
+    class HeadlightsK(IntFlag, boundary=enum.KEEP):
+        OFF_K = 0
+        LOW_BEAM_K = auto()
+        HIGH_BEAM_K = auto()
+        FOG_K = auto()
+except Exception as exc:
+    HeadlightsK = exc
 
 
-@enum.global_enum
-class HeadlightsC(IntFlag, boundary=enum.CONFORM):
-    OFF_C = 0
-    LOW_BEAM_C = auto()
-    HIGH_BEAM_C = auto()
-    FOG_C = auto()
+try:
+    @enum.global_enum
+    class HeadlightsC(IntFlag, boundary=enum.CONFORM):
+        OFF_C = 0
+        LOW_BEAM_C = auto()
+        HIGH_BEAM_C = auto()
+        FOG_C = auto()
+except Exception as exc:
+    HeadlightsC = exc
 
 
-@enum.global_enum
-class NoName(Flag):
-    ONE = 1
-    TWO = 2
+try:
+    @enum.global_enum
+    class NoName(Flag):
+        ONE = 1
+        TWO = 2
+except Exception as exc:
+    NoName = exc
 
 
 # tests
@@ -227,11 +281,83 @@ class _EnumTests:
     values = None
 
     def setUp(self):
-        class BaseEnum(self.enum_type):
+        if self.__class__.__name__[-5:] == 'Class':
+            class BaseEnum(self.enum_type):
+                @enum.property
+                def first(self):
+                    return '%s is first!' % self.name
+            class MainEnum(BaseEnum):
+                first = auto()
+                second = auto()
+                third = auto()
+                if issubclass(self.enum_type, Flag):
+                    dupe = 3
+                else:
+                    dupe = third
+            self.MainEnum = MainEnum
+            #
+            class NewStrEnum(self.enum_type):
+                def __str__(self):
+                    return self.name.upper()
+                first = auto()
+            self.NewStrEnum = NewStrEnum
+            #
+            class NewFormatEnum(self.enum_type):
+                def __format__(self, spec):
+                    return self.name.upper()
+                first = auto()
+            self.NewFormatEnum = NewFormatEnum
+            #
+            class NewStrFormatEnum(self.enum_type):
+                def __str__(self):
+                    return self.name.title()
+                def __format__(self, spec):
+                    return ''.join(reversed(self.name))
+                first = auto()
+            self.NewStrFormatEnum = NewStrFormatEnum
+            #
+            class NewBaseEnum(self.enum_type):
+                def __str__(self):
+                    return self.name.title()
+                def __format__(self, spec):
+                    return ''.join(reversed(self.name))
+            self.NewBaseEnum = NewBaseEnum
+            class NewSubEnum(NewBaseEnum):
+                first = auto()
+            self.NewSubEnum = NewSubEnum
+            #
+            class LazyGNV(self.enum_type):
+                def _generate_next_value_(name, start, last, values):
+                    pass
+            self.LazyGNV = LazyGNV
+            #
+            class BusyGNV(self.enum_type):
+                @staticmethod
+                def _generate_next_value_(name, start, last, values):
+                    pass
+            self.BusyGNV = BusyGNV
+            #
+            self.is_flag = False
+            self.names = ['first', 'second', 'third']
+            if issubclass(MainEnum, StrEnum):
+                self.values = self.names
+            elif MainEnum._member_type_ is str:
+                self.values = ['1', '2', '3']
+            elif issubclass(self.enum_type, Flag):
+                self.values = [1, 2, 4]
+                self.is_flag = True
+                self.dupe2 = MainEnum(5)
+            else:
+                self.values = self.values or [1, 2, 3]
+            #
+            if not getattr(self, 'source_values', False):
+                self.source_values = self.values
+        elif self.__class__.__name__[-8:] == 'Function':
             @enum.property
             def first(self):
                 return '%s is first!' % self.name
-        class MainEnum(BaseEnum):
+            BaseEnum = self.enum_type('BaseEnum', {'first':first})
+            #
             first = auto()
             second = auto()
             third = auto()
@@ -239,63 +365,58 @@ class MainEnum(BaseEnum):
                 dupe = 3
             else:
                 dupe = third
-        self.MainEnum = MainEnum
-        #
-        class NewStrEnum(self.enum_type):
+            self.MainEnum = MainEnum = BaseEnum('MainEnum', dict(first=first, second=second, third=third, dupe=dupe))
+            #
             def __str__(self):
                 return self.name.upper()
             first = auto()
-        self.NewStrEnum = NewStrEnum
-        #
-        class NewFormatEnum(self.enum_type):
+            self.NewStrEnum = self.enum_type('NewStrEnum', (('first',first),('__str__',__str__)))
+            #
             def __format__(self, spec):
                 return self.name.upper()
             first = auto()
-        self.NewFormatEnum = NewFormatEnum
-        #
-        class NewStrFormatEnum(self.enum_type):
+            self.NewFormatEnum = self.enum_type('NewFormatEnum', [('first',first),('__format__',__format__)])
+            #
             def __str__(self):
                 return self.name.title()
             def __format__(self, spec):
                 return ''.join(reversed(self.name))
             first = auto()
-        self.NewStrFormatEnum = NewStrFormatEnum
-        #
-        class NewBaseEnum(self.enum_type):
+            self.NewStrFormatEnum = self.enum_type('NewStrFormatEnum', dict(first=first, __format__=__format__, __str__=__str__))
+            #
             def __str__(self):
                 return self.name.title()
             def __format__(self, spec):
                 return ''.join(reversed(self.name))
-        class NewSubEnum(NewBaseEnum):
-            first = auto()
-        self.NewSubEnum = NewSubEnum
-        #
-        class LazyGNV(self.enum_type):
+            self.NewBaseEnum = self.enum_type('NewBaseEnum', dict(__format__=__format__, __str__=__str__))
+            self.NewSubEnum = self.NewBaseEnum('NewSubEnum', 'first')
+            #
             def _generate_next_value_(name, start, last, values):
                 pass
-        self.LazyGNV = LazyGNV
-        #
-        class BusyGNV(self.enum_type):
+            self.LazyGNV = self.enum_type('LazyGNV', {'_generate_next_value_':_generate_next_value_})
+            #
             @staticmethod
             def _generate_next_value_(name, start, last, values):
                 pass
-        self.BusyGNV = BusyGNV
-        #
-        self.is_flag = False
-        self.names = ['first', 'second', 'third']
-        if issubclass(MainEnum, StrEnum):
-            self.values = self.names
-        elif MainEnum._member_type_ is str:
-            self.values = ['1', '2', '3']
-        elif issubclass(self.enum_type, Flag):
-            self.values = [1, 2, 4]
-            self.is_flag = True
-            self.dupe2 = MainEnum(5)
+            self.BusyGNV = self.enum_type('BusyGNV', {'_generate_next_value_':_generate_next_value_})
+            #
+            self.is_flag = False
+            self.names = ['first', 'second', 'third']
+            if issubclass(MainEnum, StrEnum):
+                self.values = self.names
+            elif MainEnum._member_type_ is str:
+                self.values = ['1', '2', '3']
+            elif issubclass(self.enum_type, Flag):
+                self.values = [1, 2, 4]
+                self.is_flag = True
+                self.dupe2 = MainEnum(5)
+            else:
+                self.values = self.values or [1, 2, 3]
+            #
+            if not getattr(self, 'source_values', False):
+                self.source_values = self.values
         else:
-            self.values = self.values or [1, 2, 3]
-        #
-        if not getattr(self, 'source_values', False):
-            self.source_values = self.values
+            raise ValueError('unknown enum style: %r' % self.__class__.__name__)
 
     def assertFormatIsValue(self, spec, member):
         self.assertEqual(spec.format(member), spec.format(member.value))
@@ -323,6 +444,17 @@ def spam(cls):
         with self.assertRaises(AttributeError):
             del Season.SPRING.name
 
+    def test_bad_new_super(self):
+        with self.assertRaisesRegex(
+                TypeError,
+                'has no members defined',
+            ):
+            class BadSuper(self.enum_type):
+                def __new__(cls, value):
+                    obj = super().__new__(cls, value)
+                    return obj
+                failed = 1
+
     def test_basics(self):
         TE = self.MainEnum
         if self.is_flag:
@@ -378,10 +510,11 @@ def test_contains_tf(self):
         MainEnum = self.MainEnum
         self.assertIn(MainEnum.first, MainEnum)
         self.assertTrue(self.values[0] in MainEnum)
-        if type(self) is not TestStrEnum:
+        if type(self) not in (TestStrEnumClass, TestStrEnumFunction):
             self.assertFalse('first' in MainEnum)
         val = MainEnum.dupe
         self.assertIn(val, MainEnum)
+        self.assertNotIn(float('nan'), MainEnum)
         #
         class OtherEnum(Enum):
             one = auto()
@@ -473,6 +606,10 @@ class SubEnum(SuperEnum):
         self.assertTrue('description' not in dir(SubEnum))
         self.assertTrue('description' in dir(SubEnum.sample), dir(SubEnum.sample))
 
+    def test_empty_enum_has_no_values(self):
+        with self.assertRaisesRegex(TypeError, "<.... 'NewBaseEnum'> has no members"):
+            self.NewBaseEnum(7)
+
     def test_enum_in_enum_out(self):
         Main = self.MainEnum
         self.assertIs(Main(Main.first), Main.first)
@@ -795,9 +932,17 @@ def test_copy(self):
         TE = self.MainEnum
         copied = copy.copy(TE)
         self.assertEqual(copied, TE)
+        self.assertIs(copied, TE)
         deep = copy.deepcopy(TE)
         self.assertEqual(deep, TE)
+        self.assertIs(deep, TE)
 
+    def test_copy_member(self):
+        TE = self.MainEnum
+        copied = copy.copy(TE.first)
+        self.assertIs(copied, TE.first)
+        deep = copy.deepcopy(TE.first)
+        self.assertIs(deep, TE.first)
 
 class _FlagTests:
 
@@ -809,15 +954,106 @@ def test_default_missing_with_wrong_type_value(self):
             self.MainEnum('RED')
         self.assertIs(ctx.exception.__context__, None)
 
-class TestPlainEnum(_EnumTests, _PlainOutputTests, unittest.TestCase):
+    def test_closed_invert_expectations(self):
+        class ClosedAB(self.enum_type):
+            A = 1
+            B = 2
+            MASK = 3
+        A, B = ClosedAB
+        AB_MASK = ClosedAB.MASK
+        #
+        self.assertIs(~A, B)
+        self.assertIs(~B, A)
+        self.assertIs(~(A|B), ClosedAB(0))
+        self.assertIs(~AB_MASK, ClosedAB(0))
+        self.assertIs(~ClosedAB(0), (A|B))
+        #
+        class ClosedXYZ(self.enum_type):
+            X = 4
+            Y = 2
+            Z = 1
+            MASK = 7
+        X, Y, Z = ClosedXYZ
+        XYZ_MASK = ClosedXYZ.MASK
+        #
+        self.assertIs(~X, Y|Z)
+        self.assertIs(~Y, X|Z)
+        self.assertIs(~Z, X|Y)
+        self.assertIs(~(X|Y), Z)
+        self.assertIs(~(X|Z), Y)
+        self.assertIs(~(Y|Z), X)
+        self.assertIs(~(X|Y|Z), ClosedXYZ(0))
+        self.assertIs(~XYZ_MASK, ClosedXYZ(0))
+        self.assertIs(~ClosedXYZ(0), (X|Y|Z))
+
+    def test_open_invert_expectations(self):
+        class OpenAB(self.enum_type):
+            A = 1
+            B = 2
+            MASK = 255
+        A, B = OpenAB
+        AB_MASK = OpenAB.MASK
+        #
+        if OpenAB._boundary_ in (EJECT, KEEP):
+            self.assertIs(~A, OpenAB(254))
+            self.assertIs(~B, OpenAB(253))
+            self.assertIs(~(A|B), OpenAB(252))
+            self.assertIs(~AB_MASK, OpenAB(0))
+            self.assertIs(~OpenAB(0), AB_MASK)
+        else:
+            self.assertIs(~A, B)
+            self.assertIs(~B, A)
+            self.assertIs(~(A|B), OpenAB(0))
+            self.assertIs(~AB_MASK, OpenAB(0))
+            self.assertIs(~OpenAB(0), (A|B))
+        #
+        class OpenXYZ(self.enum_type):
+            X = 4
+            Y = 2
+            Z = 1
+            MASK = 31
+        X, Y, Z = OpenXYZ
+        XYZ_MASK = OpenXYZ.MASK
+        #
+        if OpenXYZ._boundary_ in (EJECT, KEEP):
+            self.assertIs(~X, OpenXYZ(27))
+            self.assertIs(~Y, OpenXYZ(29))
+            self.assertIs(~Z, OpenXYZ(30))
+            self.assertIs(~(X|Y), OpenXYZ(25))
+            self.assertIs(~(X|Z), OpenXYZ(26))
+            self.assertIs(~(Y|Z), OpenXYZ(28))
+            self.assertIs(~(X|Y|Z), OpenXYZ(24))
+            self.assertIs(~XYZ_MASK, OpenXYZ(0))
+            self.assertTrue(~OpenXYZ(0), XYZ_MASK)
+        else:
+            self.assertIs(~X, Y|Z)
+            self.assertIs(~Y, X|Z)
+            self.assertIs(~Z, X|Y)
+            self.assertIs(~(X|Y), Z)
+            self.assertIs(~(X|Z), Y)
+            self.assertIs(~(Y|Z), X)
+            self.assertIs(~(X|Y|Z), OpenXYZ(0))
+            self.assertIs(~XYZ_MASK, OpenXYZ(0))
+            self.assertTrue(~OpenXYZ(0), (X|Y|Z))
+
+
+class TestPlainEnumClass(_EnumTests, _PlainOutputTests, unittest.TestCase):
     enum_type = Enum
 
 
-class TestPlainFlag(_EnumTests, _PlainOutputTests, _FlagTests, unittest.TestCase):
+class TestPlainEnumFunction(_EnumTests, _PlainOutputTests, unittest.TestCase):
+    enum_type = Enum
+
+
+class TestPlainFlagClass(_EnumTests, _PlainOutputTests, _FlagTests, unittest.TestCase):
+    enum_type = Flag
+
+
+class TestPlainFlagFunction(_EnumTests, _PlainOutputTests, _FlagTests, unittest.TestCase):
     enum_type = Flag
 
 
-class TestIntEnum(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+class TestIntEnumClass(_EnumTests, _MinimalOutputTests, unittest.TestCase):
     enum_type = IntEnum
     #
     def test_shadowed_attr(self):
@@ -829,7 +1065,17 @@ class Number(IntEnum):
         self.assertIs(Number.numerator.divisor, Number.divisor)
 
 
-class TestStrEnum(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+class TestIntEnumFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+    enum_type = IntEnum
+    #
+    def test_shadowed_attr(self):
+        Number = IntEnum('Number', ('divisor', 'numerator'))
+        #
+        self.assertEqual(Number.divisor.numerator, 1)
+        self.assertIs(Number.numerator.divisor, Number.divisor)
+
+
+class TestStrEnumClass(_EnumTests, _MinimalOutputTests, unittest.TestCase):
     enum_type = StrEnum
     #
     def test_shadowed_attr(self):
@@ -842,64 +1088,141 @@ class Book(StrEnum):
         self.assertIs(Book.title.author, Book.author)
 
 
-class TestIntFlag(_EnumTests, _MinimalOutputTests, _FlagTests, unittest.TestCase):
+class TestStrEnumFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+    enum_type = StrEnum
+    #
+    def test_shadowed_attr(self):
+        Book = StrEnum('Book', ('author', 'title'))
+        #
+        self.assertEqual(Book.author.title(), 'Author')
+        self.assertEqual(Book.title.title(), 'Title')
+        self.assertIs(Book.title.author, Book.author)
+
+
+class TestIntFlagClass(_EnumTests, _MinimalOutputTests, _FlagTests, unittest.TestCase):
+    enum_type = IntFlag
+
+
+class TestIntFlagFunction(_EnumTests, _MinimalOutputTests, _FlagTests, unittest.TestCase):
     enum_type = IntFlag
 
 
-class TestMixedInt(_EnumTests, _MixedOutputTests, unittest.TestCase):
+class TestMixedIntClass(_EnumTests, _MixedOutputTests, unittest.TestCase):
     class enum_type(int, Enum): pass
 
 
-class TestMixedStr(_EnumTests, _MixedOutputTests, unittest.TestCase):
+class TestMixedIntFunction(_EnumTests, _MixedOutputTests, unittest.TestCase):
+    enum_type = Enum('enum_type', type=int)
+
+
+class TestMixedStrClass(_EnumTests, _MixedOutputTests, unittest.TestCase):
     class enum_type(str, Enum): pass
 
 
-class TestMixedIntFlag(_EnumTests, _MixedOutputTests, _FlagTests, unittest.TestCase):
+class TestMixedStrFunction(_EnumTests, _MixedOutputTests, unittest.TestCase):
+    enum_type = Enum('enum_type', type=str)
+
+
+class TestMixedIntFlagClass(_EnumTests, _MixedOutputTests, _FlagTests, unittest.TestCase):
     class enum_type(int, Flag): pass
 
 
-class TestMixedDate(_EnumTests, _MixedOutputTests, unittest.TestCase):
+class TestMixedIntFlagFunction(_EnumTests, _MixedOutputTests, _FlagTests, unittest.TestCase):
+    enum_type = Flag('enum_type', type=int)
+
 
+class TestMixedDateClass(_EnumTests, _MixedOutputTests, unittest.TestCase):
+    #
     values = [date(2021, 12, 25), date(2020, 3, 15), date(2019, 11, 27)]
     source_values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)]
-
+    #
     class enum_type(date, Enum):
+        @staticmethod
         def _generate_next_value_(name, start, count, last_values):
             values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)]
             return values[count]
 
 
-class TestMinimalDate(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+class TestMixedDateFunction(_EnumTests, _MixedOutputTests, unittest.TestCase):
+    #
+    values = [date(2021, 12, 25), date(2020, 3, 15), date(2019, 11, 27)]
+    source_values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)]
+    #
+    # staticmethod decorator will be added by EnumType if not present
+    def _generate_next_value_(name, start, count, last_values):
+        values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)]
+        return values[count]
+    #
+    enum_type = Enum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=date)
+
 
+class TestMinimalDateClass(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+    #
     values = [date(2023, 12, 1), date(2016, 2, 29), date(2009, 1, 1)]
     source_values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)]
-
+    #
     class enum_type(date, ReprEnum):
+        # staticmethod decorator will be added by EnumType if absent
         def _generate_next_value_(name, start, count, last_values):
             values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)]
             return values[count]
 
 
-class TestMixedFloat(_EnumTests, _MixedOutputTests, unittest.TestCase):
+class TestMinimalDateFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+    #
+    values = [date(2023, 12, 1), date(2016, 2, 29), date(2009, 1, 1)]
+    source_values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)]
+    #
+    @staticmethod
+    def _generate_next_value_(name, start, count, last_values):
+        values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)]
+        return values[count]
+    #
+    enum_type = ReprEnum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=date)
 
-    values = [1.1, 2.2, 3.3]
 
+class TestMixedFloatClass(_EnumTests, _MixedOutputTests, unittest.TestCase):
+    #
+    values = [1.1, 2.2, 3.3]
+    #
     class enum_type(float, Enum):
         def _generate_next_value_(name, start, count, last_values):
             values = [1.1, 2.2, 3.3]
             return values[count]
 
 
-class TestMinimalFloat(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+class TestMixedFloatFunction(_EnumTests, _MixedOutputTests, unittest.TestCase):
+    #
+    values = [1.1, 2.2, 3.3]
+    #
+    def _generate_next_value_(name, start, count, last_values):
+        values = [1.1, 2.2, 3.3]
+        return values[count]
+    #
+    enum_type = Enum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=float)
 
-    values = [4.4, 5.5, 6.6]
 
+class TestMinimalFloatClass(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+    #
+    values = [4.4, 5.5, 6.6]
+    #
     class enum_type(float, ReprEnum):
         def _generate_next_value_(name, start, count, last_values):
             values = [4.4, 5.5, 6.6]
             return values[count]
 
 
+class TestMinimalFloatFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase):
+    #
+    values = [4.4, 5.5, 6.6]
+    #
+    def _generate_next_value_(name, start, count, last_values):
+        values = [4.4, 5.5, 6.6]
+        return values[count]
+    #
+    enum_type = ReprEnum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=float)
+
+
 class TestSpecial(unittest.TestCase):
     """
     various operations that are not attributable to every possible enum
@@ -1024,9 +1347,8 @@ def red(self):
                 green = 2
                 blue = 3
 
+    @reraise_if_not_enum(Theory)
     def test_enum_function_with_qualname(self):
-        if isinstance(Theory, Exception):
-            raise Theory
         self.assertEqual(Theory.__qualname__, 'spanish_inquisition')
 
     def test_enum_of_types(self):
@@ -1255,6 +1577,7 @@ class MyUnBrokenEnum(UnBrokenInt, Enum):
         test_pickle_dump_load(self.assertIs, MyUnBrokenEnum.I)
         test_pickle_dump_load(self.assertIs, MyUnBrokenEnum)
 
+    @reraise_if_not_enum(FloatStooges)
     def test_floatenum_fromhex(self):
         h = float.hex(FloatStooges.MOE.value)
         self.assertIs(FloatStooges.fromhex(h), FloatStooges.MOE)
@@ -1375,6 +1698,7 @@ class ThreePart(Enum):
         self.assertIs(ThreePart((3, 3.0, 'three')), ThreePart.THREE)
         self.assertIs(ThreePart(3, 3.0, 'three'), ThreePart.THREE)
 
+    @reraise_if_not_enum(IntStooges)
     def test_intenum_from_bytes(self):
         self.assertIs(IntStooges.from_bytes(b'\x00\x03', 'big'), IntStooges.MOE)
         with self.assertRaises(ValueError):
@@ -1403,33 +1727,28 @@ def repr(self):
             class Huh(MyStr, MyInt, Enum):
                 One = 1
 
+    @reraise_if_not_enum(Stooges)
     def test_pickle_enum(self):
-        if isinstance(Stooges, Exception):
-            raise Stooges
         test_pickle_dump_load(self.assertIs, Stooges.CURLY)
         test_pickle_dump_load(self.assertIs, Stooges)
 
+    @reraise_if_not_enum(IntStooges)
     def test_pickle_int(self):
-        if isinstance(IntStooges, Exception):
-            raise IntStooges
         test_pickle_dump_load(self.assertIs, IntStooges.CURLY)
         test_pickle_dump_load(self.assertIs, IntStooges)
 
+    @reraise_if_not_enum(FloatStooges)
     def test_pickle_float(self):
-        if isinstance(FloatStooges, Exception):
-            raise FloatStooges
         test_pickle_dump_load(self.assertIs, FloatStooges.CURLY)
         test_pickle_dump_load(self.assertIs, FloatStooges)
 
+    @reraise_if_not_enum(Answer)
     def test_pickle_enum_function(self):
-        if isinstance(Answer, Exception):
-            raise Answer
         test_pickle_dump_load(self.assertIs, Answer.him)
         test_pickle_dump_load(self.assertIs, Answer)
 
+    @reraise_if_not_enum(Question)
     def test_pickle_enum_function_with_module(self):
-        if isinstance(Question, Exception):
-            raise Question
         test_pickle_dump_load(self.assertIs, Question.who)
         test_pickle_dump_load(self.assertIs, Question)
 
@@ -1492,9 +1811,8 @@ class Season(Enum):
                 [Season.SUMMER, Season.WINTER, Season.AUTUMN, Season.SPRING],
                 )
 
+    @reraise_if_not_enum(Name)
     def test_subclassing(self):
-        if isinstance(Name, Exception):
-            raise Name
         self.assertEqual(Name.BDFL, 'Guido van Rossum')
         self.assertTrue(Name.BDFL, Name('Guido van Rossum'))
         self.assertIs(Name.BDFL, getattr(Name, 'BDFL'))
@@ -1942,7 +2260,6 @@ class NEI(NamedInt, Enum):
             __qualname__ = 'NEI'
             x = ('the-x', 1)
             y = ('the-y', 2)
-
         self.assertIs(NEI.__new__, Enum.__new__)
         self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)")
         globals()['NamedInt'] = NamedInt
@@ -1950,6 +2267,10 @@ class NEI(NamedInt, Enum):
         NI5 = NamedInt('test', 5)
         self.assertEqual(NI5, 5)
         self.assertEqual(NEI.y.value, 2)
+        with self.assertRaisesRegex(TypeError, "name and value must be specified"):
+            test_pickle_dump_load(self.assertIs, NEI.y)
+        # fix pickle support and try again
+        NEI.__reduce_ex__ = enum.pickle_by_enum_name
         test_pickle_dump_load(self.assertIs, NEI.y)
         test_pickle_dump_load(self.assertIs, NEI)
 
@@ -2661,11 +2982,13 @@ class SecondFailedStrEnum(CustomStrEnum):
         class ThirdFailedStrEnum(CustomStrEnum):
             one = '1'
             two = 2  # this will become '2'
-        with self.assertRaisesRegex(TypeError, '.encoding. must be str, not '):
+        with self.assertRaisesRegex(TypeError,
+                r"argument (2|'encoding') must be str, not "):
             class ThirdFailedStrEnum(CustomStrEnum):
                 one = '1'
                 two = b'2', sys.getdefaultencoding
-        with self.assertRaisesRegex(TypeError, '.errors. must be str, not '):
+        with self.assertRaisesRegex(TypeError,
+                r"argument (3|'errors') must be str, not "):
             class ThirdFailedStrEnum(CustomStrEnum):
                 one = '1'
                 two = b'2', 'ascii', 9
@@ -2946,6 +3269,65 @@ def __new__(cls, value):
                     member._value_ = Base(value)
                     return member
 
+    def test_extra_member_creation(self):
+        class IDEnumMeta(EnumMeta):
+            def __new__(metacls, cls, bases, classdict, **kwds):
+                # add new entries to classdict
+                for name in classdict.member_names:
+                    classdict[f'{name}_DESC'] = f'-{classdict[name]}'
+                return super().__new__(metacls, cls, bases, classdict, **kwds)
+        class IDEnum(StrEnum, metaclass=IDEnumMeta):
+            pass
+        class MyEnum(IDEnum):
+            ID = 'id'
+            NAME = 'name'
+        self.assertEqual(list(MyEnum), [MyEnum.ID, MyEnum.NAME, MyEnum.ID_DESC, MyEnum.NAME_DESC])
+
+    def test_add_alias(self):
+        class mixin:
+            @property
+            def ORG(self):
+                return 'huh'
+        class Color(mixin, Enum):
+            RED = 1
+            GREEN = 2
+            BLUE = 3
+        Color.RED._add_alias_('ROJO')
+        self.assertIs(Color.RED, Color['ROJO'])
+        self.assertIs(Color.RED, Color.ROJO)
+        Color.BLUE._add_alias_('ORG')
+        self.assertIs(Color.BLUE, Color['ORG'])
+        self.assertIs(Color.BLUE, Color.ORG)
+        self.assertEqual(Color.RED.ORG, 'huh')
+        self.assertEqual(Color.GREEN.ORG, 'huh')
+        self.assertEqual(Color.BLUE.ORG, 'huh')
+        self.assertEqual(Color.ORG.ORG, 'huh')
+
+    def test_add_value_alias_after_creation(self):
+        class Color(Enum):
+            RED = 1
+            GREEN = 2
+            BLUE = 3
+        Color.RED._add_value_alias_(5)
+        self.assertIs(Color.RED, Color(5))
+
+    def test_add_value_alias_during_creation(self):
+        class Types(Enum):
+            Unknown = 0,
+            Source  = 1, 'src'
+            NetList = 2, 'nl'
+            def __new__(cls, int_value, *value_aliases):
+                member = object.__new__(cls)
+                member._value_ = int_value
+                for alias in value_aliases:
+                    member._add_value_alias_(alias)
+                return member
+        self.assertIs(Types(0), Types.Unknown)
+        self.assertIs(Types(1), Types.Source)
+        self.assertIs(Types('src'), Types.Source)
+        self.assertIs(Types(2), Types.NetList)
+        self.assertIs(Types('nl'), Types.NetList)
+
 
 class TestOrder(unittest.TestCase):
     "test usage of the `_order_` attribute"
@@ -3076,22 +3458,6 @@ def test_xor(self):
         self.assertIs(Open.RO ^ Open.CE, Open.CE)
         self.assertIs(Open.CE ^ Open.CE, Open.RO)
 
-    def test_invert(self):
-        Perm = self.Perm
-        RW = Perm.R | Perm.W
-        RX = Perm.R | Perm.X
-        WX = Perm.W | Perm.X
-        RWX = Perm.R | Perm.W | Perm.X
-        values = list(Perm) + [RW, RX, WX, RWX, Perm(0)]
-        for i in values:
-            self.assertIs(type(~i), Perm)
-            self.assertEqual(~~i, i)
-        for i in Perm:
-            self.assertIs(~~i, i)
-        Open = self.Open
-        self.assertIs(Open.WO & ~Open.WO, Open.RO)
-        self.assertIs((Open.WO|Open.CE) & ~Open.WO, Open.CE)
-
     def test_bool(self):
         Perm = self.Perm
         for f in Perm:
@@ -3243,20 +3609,30 @@ def test_programatic_function_from_dict(self):
             self.assertIn(e, Perm)
             self.assertIs(type(e), Perm)
 
+    @reraise_if_not_enum(
+        FlagStooges,
+        FlagStoogesWithZero,
+        IntFlagStooges,
+        IntFlagStoogesWithZero,
+    )
     def test_pickle(self):
-        if isinstance(FlagStooges, Exception):
-            raise FlagStooges
         test_pickle_dump_load(self.assertIs, FlagStooges.CURLY)
         test_pickle_dump_load(self.assertEqual,
                         FlagStooges.CURLY|FlagStooges.MOE)
         test_pickle_dump_load(self.assertEqual,
                         FlagStooges.CURLY&~FlagStooges.CURLY)
         test_pickle_dump_load(self.assertIs, FlagStooges)
+        test_pickle_dump_load(self.assertEqual, FlagStooges.BIG)
+        test_pickle_dump_load(self.assertEqual,
+                        FlagStooges.CURLY|FlagStooges.BIG)
 
         test_pickle_dump_load(self.assertIs, FlagStoogesWithZero.CURLY)
         test_pickle_dump_load(self.assertEqual,
                         FlagStoogesWithZero.CURLY|FlagStoogesWithZero.MOE)
         test_pickle_dump_load(self.assertIs, FlagStoogesWithZero.NOFLAG)
+        test_pickle_dump_load(self.assertEqual, FlagStoogesWithZero.BIG)
+        test_pickle_dump_load(self.assertEqual,
+                        FlagStoogesWithZero.CURLY|FlagStoogesWithZero.BIG)
 
         test_pickle_dump_load(self.assertIs, IntFlagStooges.CURLY)
         test_pickle_dump_load(self.assertEqual,
@@ -3266,11 +3642,19 @@ def test_pickle(self):
         test_pickle_dump_load(self.assertEqual, IntFlagStooges(0))
         test_pickle_dump_load(self.assertEqual, IntFlagStooges(0x30))
         test_pickle_dump_load(self.assertIs, IntFlagStooges)
+        test_pickle_dump_load(self.assertEqual, IntFlagStooges.BIG)
+        test_pickle_dump_load(self.assertEqual, IntFlagStooges.BIG|1)
+        test_pickle_dump_load(self.assertEqual,
+                        IntFlagStooges.CURLY|IntFlagStooges.BIG)
 
         test_pickle_dump_load(self.assertIs, IntFlagStoogesWithZero.CURLY)
         test_pickle_dump_load(self.assertEqual,
                         IntFlagStoogesWithZero.CURLY|IntFlagStoogesWithZero.MOE)
         test_pickle_dump_load(self.assertIs, IntFlagStoogesWithZero.NOFLAG)
+        test_pickle_dump_load(self.assertEqual, IntFlagStoogesWithZero.BIG)
+        test_pickle_dump_load(self.assertEqual, IntFlagStoogesWithZero.BIG|1)
+        test_pickle_dump_load(self.assertEqual,
+                        IntFlagStoogesWithZero.CURLY|IntFlagStoogesWithZero.BIG)
 
     def test_contains_tf(self):
         Open = self.Open
@@ -3536,6 +3920,7 @@ def test_type(self):
         self.assertTrue(isinstance(Open.WO | Open.RW, Open))
         self.assertEqual(Open.WO | Open.RW, 3)
 
+    @reraise_if_not_enum(HeadlightsK)
     def test_global_repr_keep(self):
         self.assertEqual(
                 repr(HeadlightsK(0)),
@@ -3550,6 +3935,7 @@ def test_global_repr_keep(self):
                 '%(m)s.HeadlightsK(8)' % {'m': SHORT_MODULE},
                 )
 
+    @reraise_if_not_enum(HeadlightsC)
     def test_global_repr_conform1(self):
         self.assertEqual(
                 repr(HeadlightsC(0)),
@@ -3564,6 +3950,7 @@ def test_global_repr_conform1(self):
                 '%(m)s.OFF_C' % {'m': SHORT_MODULE},
                 )
 
+    @reraise_if_not_enum(NoName)
     def test_global_enum_str(self):
         self.assertEqual(str(NoName.ONE & NoName.TWO), 'NoName(0)')
         self.assertEqual(str(NoName(0)), 'NoName(0)')
@@ -4265,7 +4652,7 @@ class Color(Enum):
             'mixed types with auto() will raise in 3.13',
             )
     def test_auto_garbage_fail(self):
-        with self.assertRaisesRegex(TypeError, 'will require all values to be sortable'):
+        with self.assertRaisesRegex(TypeError, "unable to increment 'red'"):
             class Color(Enum):
                 red = 'red'
                 blue = auto()
@@ -4275,7 +4662,7 @@ class Color(Enum):
             'mixed types with auto() will raise in 3.13',
             )
     def test_auto_garbage_corrected_fail(self):
-        with self.assertRaisesRegex(TypeError, 'will require all values to be sortable'):
+        with self.assertRaisesRegex(TypeError, 'unable to sort non-numeric values'):
             class Color(Enum):
                 red = 'red'
                 blue = 2
@@ -4369,8 +4756,6 @@ def _generate_next_value_(name, start, count, last):
         self.assertEqual(Huh.TWO.value, (2, 2))
         self.assertEqual(Huh.THREE.value, (3, 3, 3))
 
-class TestEnumTypeSubclassing(unittest.TestCase):
-    pass
 
 expected_help_output_with_docs = """\
 Help on class Color in module %s:
@@ -4616,12 +5001,14 @@ class CheckedColor(Enum):
             @bltns.property
             def zeroth(self):
                 return 'zeroed %s' % self.name
-        self.assertTrue(_test_simple_enum(CheckedColor, SimpleColor) is None)
+        _test_simple_enum(CheckedColor, SimpleColor)
         SimpleColor.MAGENTA._value_ = 9
         self.assertRaisesRegex(
                 TypeError, "enum mismatch",
                 _test_simple_enum, CheckedColor, SimpleColor,
                 )
+        #
+        #
         class CheckedMissing(IntFlag, boundary=KEEP):
             SIXTY_FOUR = 64
             ONE_TWENTY_EIGHT = 128
@@ -4638,8 +5025,28 @@ class Missing:
             ALL = 2048 + 128 + 64 + 12
         M = Missing
         self.assertEqual(list(CheckedMissing), [M.SIXTY_FOUR, M.ONE_TWENTY_EIGHT, M.TWENTY_FORTY_EIGHT])
-        #
         _test_simple_enum(CheckedMissing, Missing)
+        #
+        #
+        class CheckedUnhashable(Enum):
+            ONE = dict()
+            TWO = set()
+            name = 'python'
+        self.assertIn(dict(), CheckedUnhashable)
+        self.assertIn('python', CheckedUnhashable)
+        self.assertEqual(CheckedUnhashable.name.value, 'python')
+        self.assertEqual(CheckedUnhashable.name.name, 'name')
+        #
+        @_simple_enum()
+        class Unhashable:
+            ONE = dict()
+            TWO = set()
+            name = 'python'
+        self.assertIn(dict(), Unhashable)
+        self.assertIn('python', Unhashable)
+        self.assertEqual(Unhashable.name.value, 'python')
+        self.assertEqual(Unhashable.name.name, 'name')
+        _test_simple_enum(Unhashable, Unhashable)
 
 
 class MiscTestCase(unittest.TestCase):
@@ -4846,7 +5253,7 @@ def member_dir(member):
                     allowed.add(name)
                 else:
                     allowed.discard(name)
-            else:
+            elif name not in member._member_map_:
                 allowed.add(name)
     return sorted(allowed)
 
diff --git a/Lib/test/test_exception_group.py b/Lib/test/test_exception_group.py
index fa159a76ec1aff..20122679223843 100644
--- a/Lib/test/test_exception_group.py
+++ b/Lib/test/test_exception_group.py
@@ -1,7 +1,7 @@
 import collections.abc
 import types
 import unittest
-
+from test.support import Py_C_RECURSION_LIMIT
 
 class TestExceptionGroupTypeHierarchy(unittest.TestCase):
     def test_exception_group_types(self):
@@ -294,6 +294,15 @@ def assertMatchesTemplate(self, exc, exc_type, template):
             self.assertEqual(type(exc), type(template))
             self.assertEqual(exc.args, template.args)
 
+class Predicate:
+    def __init__(self, func):
+        self.func = func
+
+    def __call__(self, e):
+        return self.func(e)
+
+    def method(self, e):
+        return self.func(e)
 
 class ExceptionGroupSubgroupTests(ExceptionGroupTestBase):
     def setUp(self):
@@ -301,10 +310,15 @@ def setUp(self):
         self.eg_template = [ValueError(1), TypeError(int), ValueError(2)]
 
     def test_basics_subgroup_split__bad_arg_type(self):
+        class C:
+            pass
+
         bad_args = ["bad arg",
+                    C,
                     OSError('instance not type'),
                     [OSError, TypeError],
-                    (OSError, 42)]
+                    (OSError, 42),
+                   ]
         for arg in bad_args:
             with self.assertRaises(TypeError):
                 self.eg.subgroup(arg)
@@ -336,10 +350,14 @@ def test_basics_subgroup_by_type__match(self):
                 self.assertMatchesTemplate(subeg, ExceptionGroup, template)
 
     def test_basics_subgroup_by_predicate__passthrough(self):
-        self.assertIs(self.eg, self.eg.subgroup(lambda e: True))
+        f = lambda e: True
+        for callable in [f, Predicate(f), Predicate(f).method]:
+            self.assertIs(self.eg, self.eg.subgroup(callable))
 
     def test_basics_subgroup_by_predicate__no_match(self):
-        self.assertIsNone(self.eg.subgroup(lambda e: False))
+        f = lambda e: False
+        for callable in [f, Predicate(f), Predicate(f).method]:
+            self.assertIsNone(self.eg.subgroup(callable))
 
     def test_basics_subgroup_by_predicate__match(self):
         eg = self.eg
@@ -350,9 +368,12 @@ def test_basics_subgroup_by_predicate__match(self):
             ((ValueError, TypeError), self.eg_template)]
 
         for match_type, template in testcases:
-            subeg = eg.subgroup(lambda e: isinstance(e, match_type))
-            self.assertEqual(subeg.message, eg.message)
-            self.assertMatchesTemplate(subeg, ExceptionGroup, template)
+            f = lambda e: isinstance(e, match_type)
+            for callable in [f, Predicate(f), Predicate(f).method]:
+                with self.subTest(callable=callable):
+                    subeg = eg.subgroup(f)
+                    self.assertEqual(subeg.message, eg.message)
+                    self.assertMatchesTemplate(subeg, ExceptionGroup, template)
 
 
 class ExceptionGroupSplitTests(ExceptionGroupTestBase):
@@ -399,14 +420,18 @@ def test_basics_split_by_type__match(self):
                 self.assertIsNone(rest)
 
     def test_basics_split_by_predicate__passthrough(self):
-        match, rest = self.eg.split(lambda e: True)
-        self.assertMatchesTemplate(match, ExceptionGroup, self.eg_template)
-        self.assertIsNone(rest)
+        f = lambda e: True
+        for callable in [f, Predicate(f), Predicate(f).method]:
+            match, rest = self.eg.split(callable)
+            self.assertMatchesTemplate(match, ExceptionGroup, self.eg_template)
+            self.assertIsNone(rest)
 
     def test_basics_split_by_predicate__no_match(self):
-        match, rest = self.eg.split(lambda e: False)
-        self.assertIsNone(match)
-        self.assertMatchesTemplate(rest, ExceptionGroup, self.eg_template)
+        f = lambda e: False
+        for callable in [f, Predicate(f), Predicate(f).method]:
+            match, rest = self.eg.split(callable)
+            self.assertIsNone(match)
+            self.assertMatchesTemplate(rest, ExceptionGroup, self.eg_template)
 
     def test_basics_split_by_predicate__match(self):
         eg = self.eg
@@ -420,20 +445,22 @@ def test_basics_split_by_predicate__match(self):
         ]
 
         for match_type, match_template, rest_template in testcases:
-            match, rest = eg.split(lambda e: isinstance(e, match_type))
-            self.assertEqual(match.message, eg.message)
-            self.assertMatchesTemplate(
-                match, ExceptionGroup, match_template)
-            if rest_template is not None:
-                self.assertEqual(rest.message, eg.message)
+            f = lambda e: isinstance(e, match_type)
+            for callable in [f, Predicate(f), Predicate(f).method]:
+                match, rest = eg.split(callable)
+                self.assertEqual(match.message, eg.message)
                 self.assertMatchesTemplate(
-                    rest, ExceptionGroup, rest_template)
+                    match, ExceptionGroup, match_template)
+                if rest_template is not None:
+                    self.assertEqual(rest.message, eg.message)
+                    self.assertMatchesTemplate(
+                        rest, ExceptionGroup, rest_template)
 
 
 class DeepRecursionInSplitAndSubgroup(unittest.TestCase):
     def make_deep_eg(self):
         e = TypeError(1)
-        for i in range(2000):
+        for i in range(Py_C_RECURSION_LIMIT + 1):
             e = ExceptionGroup('eg', [e])
         return e
 
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index f3554f1c4bb3f3..c57488e44aecc6 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -18,6 +18,12 @@
 from test.support.warnings_helper import check_warnings
 from test import support
 
+try:
+    from _testcapi import INT_MAX
+except ImportError:
+    INT_MAX = 2**31 - 1
+
+
 
 class NaiveException(Exception):
     def __init__(self, x):
@@ -253,7 +259,7 @@ def testSyntaxErrorOffset(self):
         check('try:\n  pass\nexcept*:\n  pass', 3, 8)
         check('try:\n  pass\nexcept*:\n  pass\nexcept* ValueError:\n  pass', 3, 8)
 
-        # Errors thrown by tokenizer.c
+        # Errors thrown by the tokenizer
         check('(0x+1)', 1, 3)
         check('x = 0xI', 1, 6)
         check('0010 + 2', 1, 1)
@@ -318,6 +324,14 @@ def baz():
         check('(yield i) = 2', 1, 2)
         check('def f(*):\n  pass', 1, 7)
 
+    @unittest.skipIf(INT_MAX >= sys.maxsize, "Downcasting to int is safe for col_offset")
+    @support.requires_resource('cpu')
+    @support.bigmemtest(INT_MAX, memuse=2, dry_run=False)
+    def testMemoryErrorBigSource(self, size):
+        src = b"if True:\n%*s" % (size, b"pass")
+        with self.assertRaisesRegex(OverflowError, "Parser column offset overflow"):
+            compile(src, '<fragment>', 'exec')
+
     @cpython_only
     def testSettingException(self):
         # test that setting an exception at the C level works even if the
@@ -1350,6 +1364,7 @@ def g():
 
 
     @cpython_only
+    @support.requires_resource('cpu')
     def test_trashcan_recursion(self):
         # See bpo-33930
 
@@ -1484,6 +1499,9 @@ def recurse_in_body_and_except():
 
 
     @cpython_only
+    # Python built with Py_TRACE_REFS fail with a fatal error in
+    # _PyRefchain_Trace() on memory allocation error.
+    @unittest.skipIf(support.Py_TRACE_REFS, 'cannot test Py_TRACE_REFS build')
     def test_recursion_normalizing_with_no_memory(self):
         # Issue #30697. Test that in the abort that occurs when there is no
         # memory left and the size of the Python frames stack is greater than
@@ -1652,6 +1670,9 @@ def test_unhandled(self):
                 self.assertTrue(report.endswith("\n"))
 
     @cpython_only
+    # Python built with Py_TRACE_REFS fail with a fatal error in
+    # _PyRefchain_Trace() on memory allocation error.
+    @unittest.skipIf(support.Py_TRACE_REFS, 'cannot test Py_TRACE_REFS build')
     def test_memory_error_in_PyErr_PrintEx(self):
         code = """if 1:
             import _testcapi
@@ -1770,6 +1791,20 @@ class TestException(MemoryError):
 
             gc_collect()
 
+    def test_memory_error_in_subinterp(self):
+        # gh-109894: subinterpreters shouldn't count on last resort memory error
+        # when MemoryError is raised through PyErr_NoMemory() call,
+        # and should preallocate memory errors as does the main interpreter.
+        # interp.static_objects.last_resort_memory_error.args
+        # should be initialized to empty tuple to avoid crash on attempt to print it.
+        code = f"""if 1:
+            import _testcapi
+            _testcapi.run_in_subinterp(\"[0]*{sys.maxsize}\")
+            exit(0)
+        """
+        rc, _, err = script_helper.assert_python_ok("-c", code)
+        self.assertIn(b'MemoryError', err)
+
 
 class NameErrorTests(unittest.TestCase):
     def test_name_error_has_name(self):
@@ -1809,6 +1844,13 @@ def f():
         self.assertIn("nonsense", err.getvalue())
         self.assertIn("ZeroDivisionError", err.getvalue())
 
+    def test_gh_111654(self):
+        def f():
+            class TestClass:
+                TestClass
+
+        self.assertRaises(NameError, f)
+
     # Note: name suggestion tests live in `test_traceback`.
 
 
@@ -1931,6 +1973,124 @@ def test_copy_pickle(self):
                 self.assertEqual(exc.name, orig.name)
                 self.assertEqual(exc.path, orig.path)
 
+
+class AssertionErrorTests(unittest.TestCase):
+    def tearDown(self):
+        unlink(TESTFN)
+
+    def write_source(self, source):
+        with open(TESTFN, 'w') as testfile:
+            testfile.write(dedent(source))
+        _rc, _out, err = script_helper.assert_python_failure('-Wd', '-X', 'utf8', TESTFN)
+        return err.decode('utf-8').splitlines()
+
+    def test_assertion_error_location(self):
+        cases = [
+            ('assert None',
+                [
+                    '    assert None',
+                    '           ^^^^',
+                    'AssertionError',
+                ],
+            ),
+            ('assert 0',
+                [
+                    '    assert 0',
+                    '           ^',
+                    'AssertionError',
+                ],
+            ),
+            ('assert 1 > 2',
+                [
+                    '    assert 1 > 2',
+                    '           ^^^^^',
+                    'AssertionError',
+                ],
+            ),
+            ('assert 1 > 2 and 3 > 2',
+                [
+                    '    assert 1 > 2 and 3 > 2',
+                    '           ^^^^^^^^^^^^^^^',
+                    'AssertionError',
+                ],
+            ),
+            ('assert 1 > 2, "message"',
+                [
+                    '    assert 1 > 2, "message"',
+                    '           ^^^^^',
+                    'AssertionError: message',
+                ],
+            ),
+
+            # Multiline:
+            ("""
+             assert (
+                 1 > 2)
+             """,
+                [
+                    '    1 > 2)',
+                    '    ^^^^^',
+                    'AssertionError',
+                ],
+            ),
+            ("""
+             assert (
+                 1 > 2), "Message"
+             """,
+                [
+                    '    1 > 2), "Message"',
+                    '    ^^^^^',
+                    'AssertionError: Message',
+                ],
+            ),
+            ("""
+             assert (
+                 1 > 2), \\
+                 "Message"
+             """,
+                [
+                    '    1 > 2), \\',
+                    '    ^^^^^',
+                    'AssertionError: Message',
+                ],
+            ),
+        ]
+        for source, expected in cases:
+            with self.subTest(source):
+                result = self.write_source(source)
+                self.assertEqual(result[-3:], expected)
+
+    def test_multiline_not_highlighted(self):
+        cases = [
+            ("""
+             assert (
+                 1 > 2
+             )
+             """,
+                [
+                    '    1 > 2',
+                    'AssertionError',
+                ],
+            ),
+            ("""
+             assert (
+                 1 < 2 and
+                 3 > 4
+             )
+             """,
+                [
+                    '    1 < 2 and',
+                    '    3 > 4',
+                    'AssertionError',
+                ],
+            ),
+        ]
+        for source, expected in cases:
+            with self.subTest(source):
+                result = self.write_source(source)
+                self.assertEqual(result[-len(expected):], expected)
+
+
 class SyntaxErrorTests(unittest.TestCase):
     def test_range_of_offsets(self):
         cases = [
diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py
index 8d106daaf6520a..d0473500a17735 100644
--- a/Lib/test/test_faulthandler.py
+++ b/Lib/test/test_faulthandler.py
@@ -7,9 +7,7 @@
 import subprocess
 import sys
 from test import support
-from test.support import os_helper
-from test.support import script_helper, is_android
-from test.support import skip_if_sanitizer
+from test.support import os_helper, script_helper, is_android, MS_WINDOWS
 import tempfile
 import unittest
 from textwrap import dedent
@@ -23,7 +21,6 @@
     raise unittest.SkipTest("test module requires subprocess")
 
 TIMEOUT = 0.5
-MS_WINDOWS = (os.name == 'nt')
 
 
 def expected_traceback(lineno1, lineno2, header, min_count=1):
@@ -36,7 +33,7 @@ def expected_traceback(lineno1, lineno2, header, min_count=1):
         return '^' + regex + '$'
 
 def skip_segfault_on_android(test):
-    # Issue #32138: Raising SIGSEGV on Android may not cause a crash.
+    # gh-76319: Raising SIGSEGV on Android may not cause a crash.
     return unittest.skipIf(is_android,
                            'raising SIGSEGV on Android is unreliable')(test)
 
@@ -64,8 +61,16 @@ def get_output(self, code, filename=None, fd=None):
         pass_fds = []
         if fd is not None:
             pass_fds.append(fd)
+        env = dict(os.environ)
+
+        # Sanitizers must not handle SIGSEGV (ex: for test_enable_fd())
+        option = 'handle_segv=0'
+        support.set_sanitizer_env_var(env, option)
+
         with support.SuppressCrashReport():
-            process = script_helper.spawn_python('-c', code, pass_fds=pass_fds)
+            process = script_helper.spawn_python('-c', code,
+                                                 pass_fds=pass_fds,
+                                                 env=env)
             with process:
                 output, stderr = process.communicate()
                 exitcode = process.wait()
@@ -270,7 +275,7 @@ def check_fatal_error_func(self, release_gil):
                 """,
                 2,
                 'xyz',
-                func='test_fatal_error',
+                func='_testcapi_fatal_error_impl',
                 py_fatal_error=True)
 
     def test_fatal_error(self):
@@ -304,8 +309,6 @@ def test_gil_released(self):
             3,
             'Segmentation fault')
 
-    @skip_if_sanitizer(memory=True, ub=True, reason="sanitizer "
-                       "builds change crashing process output.")
     @skip_segfault_on_android
     def test_enable_file(self):
         with temporary_filename() as filename:
@@ -321,8 +324,6 @@ def test_enable_file(self):
 
     @unittest.skipIf(sys.platform == "win32",
                      "subprocess doesn't support pass_fds on Windows")
-    @skip_if_sanitizer(memory=True, ub=True, reason="sanitizer "
-                       "builds change crashing process output.")
     @skip_segfault_on_android
     def test_enable_fd(self):
         with tempfile.TemporaryFile('wb+') as fp:
@@ -676,6 +677,7 @@ def test_dump_traceback_later_fd(self):
         with tempfile.TemporaryFile('wb+') as fp:
             self.check_dump_traceback_later(fd=fp.fileno())
 
+    @support.requires_resource('walltime')
     def test_dump_traceback_later_twice(self):
         self.check_dump_traceback_later(loops=2)
 
diff --git a/Lib/test/test_fcntl.py b/Lib/test/test_fcntl.py
index 5da75615b41d79..203dd6fe57dcd9 100644
--- a/Lib/test/test_fcntl.py
+++ b/Lib/test/test_fcntl.py
@@ -16,37 +16,6 @@
 
 
 
-def get_lockdata():
-    try:
-        os.O_LARGEFILE
-    except AttributeError:
-        start_len = "ll"
-    else:
-        start_len = "qq"
-
-    if (sys.platform.startswith(('netbsd', 'freebsd', 'openbsd'))
-        or sys.platform == 'darwin'):
-        if struct.calcsize('l') == 8:
-            off_t = 'l'
-            pid_t = 'i'
-        else:
-            off_t = 'lxxxx'
-            pid_t = 'l'
-        lockdata = struct.pack(off_t + off_t + pid_t + 'hh', 0, 0, 0,
-                               fcntl.F_WRLCK, 0)
-    elif sys.platform.startswith('gnukfreebsd'):
-        lockdata = struct.pack('qqihhi', 0, 0, 0, fcntl.F_WRLCK, 0, 0)
-    elif sys.platform in ['hp-uxB', 'unixware7']:
-        lockdata = struct.pack('hhlllii', fcntl.F_WRLCK, 0, 0, 0, 0, 0, 0)
-    else:
-        lockdata = struct.pack('hh'+start_len+'hh', fcntl.F_WRLCK, 0, 0, 0, 0, 0)
-    if lockdata:
-        if verbose:
-            print('struct.pack: ', repr(lockdata))
-    return lockdata
-
-lockdata = get_lockdata()
-
 class BadFile:
     def __init__(self, fn):
         self.fn = fn
@@ -78,12 +47,43 @@ def tearDown(self):
             self.f.close()
         unlink(TESTFN)
 
+    @staticmethod
+    def get_lockdata():
+        try:
+            os.O_LARGEFILE
+        except AttributeError:
+            start_len = "ll"
+        else:
+            start_len = "qq"
+
+        if (sys.platform.startswith(('netbsd', 'freebsd', 'openbsd'))
+            or sys.platform == 'darwin'):
+            if struct.calcsize('l') == 8:
+                off_t = 'l'
+                pid_t = 'i'
+            else:
+                off_t = 'lxxxx'
+                pid_t = 'l'
+            lockdata = struct.pack(off_t + off_t + pid_t + 'hh', 0, 0, 0,
+                                   fcntl.F_WRLCK, 0)
+        elif sys.platform.startswith('gnukfreebsd'):
+            lockdata = struct.pack('qqihhi', 0, 0, 0, fcntl.F_WRLCK, 0, 0)
+        elif sys.platform in ['hp-uxB', 'unixware7']:
+            lockdata = struct.pack('hhlllii', fcntl.F_WRLCK, 0, 0, 0, 0, 0, 0)
+        else:
+            lockdata = struct.pack('hh'+start_len+'hh', fcntl.F_WRLCK, 0, 0, 0, 0, 0)
+        if lockdata:
+            if verbose:
+                print('struct.pack: ', repr(lockdata))
+        return lockdata
+
     def test_fcntl_fileno(self):
         # the example from the library docs
         self.f = open(TESTFN, 'wb')
         rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETFL, os.O_NONBLOCK)
         if verbose:
             print('Status from fcntl with O_NONBLOCK: ', rv)
+        lockdata = self.get_lockdata()
         rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETLKW, lockdata)
         if verbose:
             print('String from fcntl with F_SETLKW: ', repr(rv))
@@ -95,6 +95,7 @@ def test_fcntl_file_descriptor(self):
         rv = fcntl.fcntl(self.f, fcntl.F_SETFL, os.O_NONBLOCK)
         if verbose:
             print('Status from fcntl with O_NONBLOCK: ', rv)
+        lockdata = self.get_lockdata()
         rv = fcntl.fcntl(self.f, fcntl.F_SETLKW, lockdata)
         if verbose:
             print('String from fcntl with F_SETLKW: ', repr(rv))
diff --git a/Lib/test/test_fileio.py b/Lib/test/test_fileio.py
index ebfcffd1829174..f490485cdaf3eb 100644
--- a/Lib/test/test_fileio.py
+++ b/Lib/test/test_fileio.py
@@ -10,7 +10,8 @@
 from functools import wraps
 
 from test.support import (
-    cpython_only, swap_attr, gc_collect, is_emscripten, is_wasi
+    cpython_only, swap_attr, gc_collect, is_emscripten, is_wasi,
+    infinite_recursion,
 )
 from test.support.os_helper import (
     TESTFN, TESTFN_ASCII, TESTFN_UNICODE, make_bad_fd,
@@ -183,6 +184,7 @@ def testReprNoCloseFD(self):
         finally:
             os.close(fd)
 
+    @infinite_recursion(25)
     def testRecursiveRepr(self):
         # Issue #25455
         with swap_attr(self.f, 'name', self.f):
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index c4ee1e08251d63..5bd640617d6874 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -18,14 +18,13 @@
 except ImportError:
     _testcapi = None
 
-HAVE_IEEE_754 = float.__getformat__("double").startswith("IEEE")
 INF = float("inf")
 NAN = float("nan")
 
 
 #locate file with float format test values
 test_dir = os.path.dirname(__file__) or os.curdir
-format_testfile = os.path.join(test_dir, 'formatfloat_testcases.txt')
+format_testfile = os.path.join(test_dir, 'mathdata', 'formatfloat_testcases.txt')
 
 class FloatSubclass(float):
     pass
@@ -733,8 +732,13 @@ def test_format_testfile(self):
 
                 lhs, rhs = map(str.strip, line.split('->'))
                 fmt, arg = lhs.split()
-                self.assertEqual(fmt % float(arg), rhs)
-                self.assertEqual(fmt % -float(arg), '-' + rhs)
+                f = float(arg)
+                self.assertEqual(fmt % f, rhs)
+                self.assertEqual(fmt % -f, '-' + rhs)
+                if fmt != '%r':
+                    fmt2 = fmt[1:]
+                    self.assertEqual(format(f, fmt2), rhs)
+                    self.assertEqual(format(-f, fmt2), '-' + rhs)
 
     def test_issue5864(self):
         self.assertEqual(format(123.456, '.4'), '123.5')
@@ -763,6 +767,7 @@ def test_issue35560(self):
 class ReprTestCase(unittest.TestCase):
     def test_repr(self):
         with open(os.path.join(os.path.split(__file__)[0],
+                  'mathdata',
                   'floating_points.txt'), encoding="utf-8") as floats_file:
             for line in floats_file:
                 line = line.strip()
@@ -1499,69 +1504,5 @@ def __init__(self, value):
         self.assertEqual(getattr(f, 'foo', 'none'), 'bar')
 
 
-# Test PyFloat_Pack2(), PyFloat_Pack4() and PyFloat_Pack8()
-# Test PyFloat_Unpack2(), PyFloat_Unpack4() and PyFloat_Unpack8()
-BIG_ENDIAN = 0
-LITTLE_ENDIAN = 1
-EPSILON = {
-    2: 2.0 ** -11,  # binary16
-    4: 2.0 ** -24,  # binary32
-    8: 2.0 ** -53,  # binary64
-}
-
-@unittest.skipIf(_testcapi is None, 'needs _testcapi')
-class PackTests(unittest.TestCase):
-    def test_pack(self):
-        self.assertEqual(_testcapi.float_pack(2, 1.5, BIG_ENDIAN),
-                         b'>\x00')
-        self.assertEqual(_testcapi.float_pack(4, 1.5, BIG_ENDIAN),
-                         b'?\xc0\x00\x00')
-        self.assertEqual(_testcapi.float_pack(8, 1.5, BIG_ENDIAN),
-                         b'?\xf8\x00\x00\x00\x00\x00\x00')
-        self.assertEqual(_testcapi.float_pack(2, 1.5, LITTLE_ENDIAN),
-                         b'\x00>')
-        self.assertEqual(_testcapi.float_pack(4, 1.5, LITTLE_ENDIAN),
-                         b'\x00\x00\xc0?')
-        self.assertEqual(_testcapi.float_pack(8, 1.5, LITTLE_ENDIAN),
-                         b'\x00\x00\x00\x00\x00\x00\xf8?')
-
-    def test_unpack(self):
-        self.assertEqual(_testcapi.float_unpack(b'>\x00', BIG_ENDIAN),
-                         1.5)
-        self.assertEqual(_testcapi.float_unpack(b'?\xc0\x00\x00', BIG_ENDIAN),
-                         1.5)
-        self.assertEqual(_testcapi.float_unpack(b'?\xf8\x00\x00\x00\x00\x00\x00', BIG_ENDIAN),
-                         1.5)
-        self.assertEqual(_testcapi.float_unpack(b'\x00>', LITTLE_ENDIAN),
-                         1.5)
-        self.assertEqual(_testcapi.float_unpack(b'\x00\x00\xc0?', LITTLE_ENDIAN),
-                         1.5)
-        self.assertEqual(_testcapi.float_unpack(b'\x00\x00\x00\x00\x00\x00\xf8?', LITTLE_ENDIAN),
-                         1.5)
-
-    def test_roundtrip(self):
-        large = 2.0 ** 100
-        values = [1.0, 1.5, large, 1.0/7, math.pi]
-        if HAVE_IEEE_754:
-            values.extend((INF, NAN))
-        for value in values:
-            for size in (2, 4, 8,):
-                if size == 2 and value == large:
-                    # too large for 16-bit float
-                    continue
-                rel_tol = EPSILON[size]
-                for endian in (BIG_ENDIAN, LITTLE_ENDIAN):
-                    with self.subTest(value=value, size=size, endian=endian):
-                        data = _testcapi.float_pack(size, value, endian)
-                        value2 = _testcapi.float_unpack(data, endian)
-                        if isnan(value):
-                            self.assertTrue(isnan(value2), (value, value2))
-                        elif size < 8:
-                            self.assertTrue(math.isclose(value2, value, rel_tol=rel_tol),
-                                            (value, value2))
-                        else:
-                            self.assertEqual(value2, value)
-
-
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py
index e112f49d2e7944..499e3b6e656faa 100644
--- a/Lib/test/test_fractions.py
+++ b/Lib/test/test_fractions.py
@@ -7,6 +7,7 @@
 import operator
 import fractions
 import functools
+import os
 import sys
 import typing
 import unittest
@@ -15,6 +16,9 @@
 from pickle import dumps, loads
 F = fractions.Fraction
 
+#locate file with float format test values
+test_dir = os.path.dirname(__file__) or os.curdir
+format_testfile = os.path.join(test_dir, 'mathdata', 'formatfloat_testcases.txt')
 
 class DummyFloat(object):
     """Dummy float class for testing comparisons with Fractions"""
@@ -1220,6 +1224,30 @@ def test_invalid_formats(self):
                 with self.assertRaises(ValueError):
                     format(fraction, spec)
 
+    @requires_IEEE_754
+    def test_float_format_testfile(self):
+        with open(format_testfile, encoding="utf-8") as testfile:
+            for line in testfile:
+                if line.startswith('--'):
+                    continue
+                line = line.strip()
+                if not line:
+                    continue
+
+                lhs, rhs = map(str.strip, line.split('->'))
+                fmt, arg = lhs.split()
+                if fmt == '%r':
+                    continue
+                fmt2 = fmt[1:]
+                with self.subTest(fmt=fmt, arg=arg):
+                    f = F(float(arg))
+                    self.assertEqual(format(f, fmt2), rhs)
+                    if f:  # skip negative zero
+                        self.assertEqual(format(-f, fmt2), '-' + rhs)
+                    f = F(arg)
+                    self.assertEqual(float(format(f, fmt2)), float(rhs))
+                    self.assertEqual(float(format(-f, fmt2)), float('-' + rhs))
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_frame.py b/Lib/test/test_frame.py
index 6bb0144e9b1ed7..7f17666a8d9697 100644
--- a/Lib/test/test_frame.py
+++ b/Lib/test/test_frame.py
@@ -80,9 +80,11 @@ def g():
         gen = g()
         next(gen)
         self.assertFalse(endly)
-        # Clearing the frame closes the generator
-        gen.gi_frame.clear()
-        self.assertTrue(endly)
+
+        # Cannot clear a suspended frame
+        with self.assertRaisesRegex(RuntimeError, r'suspended frame'):
+            gen.gi_frame.clear()
+        self.assertFalse(endly)
 
     def test_clear_executing(self):
         # Attempting to clear an executing frame is forbidden.
@@ -114,9 +116,10 @@ def g():
         gen = g()
         f = next(gen)
         self.assertFalse(endly)
-        # Clearing the frame closes the generator
-        f.clear()
-        self.assertTrue(endly)
+        # Cannot clear a suspended frame
+        with self.assertRaisesRegex(RuntimeError, 'suspended frame'):
+            f.clear()
+        self.assertFalse(endly)
 
     def test_lineno_with_tracing(self):
         def record_line():
@@ -322,7 +325,7 @@ def f():
             sneaky_frame_object = None
             gc.enable()
             next(g)
-            # g.gi_frame should be the the frame object from the callback (the
+            # g.gi_frame should be the frame object from the callback (the
             # one that was *requested* second, but *created* first):
             self.assertIs(g.gi_frame, sneaky_frame_object)
         finally:
diff --git a/Lib/test/test_fstring.py b/Lib/test/test_fstring.py
index 58e2550715cecf..27c7f70cef32e3 100644
--- a/Lib/test/test_fstring.py
+++ b/Lib/test/test_fstring.py
@@ -8,14 +8,16 @@
 # Unicode identifiers in tests is allowed by PEP 3131.
 
 import ast
+import dis
 import os
 import re
 import types
 import decimal
 import unittest
+import warnings
 from test import support
 from test.support.os_helper import temp_cwd
-from test.support.script_helper import assert_python_failure
+from test.support.script_helper import assert_python_failure, assert_python_ok
 
 a_global = 'global variable'
 
@@ -495,6 +497,72 @@ def test_ast_line_numbers_with_parentheses(self):
         self.assertEqual(wat2.end_col_offset, 17)
         self.assertEqual(fstring.end_col_offset, 18)
 
+    def test_ast_fstring_empty_format_spec(self):
+        expr = "f'{expr:}'"
+
+        mod = ast.parse(expr)
+        self.assertEqual(type(mod), ast.Module)
+        self.assertEqual(len(mod.body), 1)
+
+        fstring = mod.body[0].value
+        self.assertEqual(type(fstring), ast.JoinedStr)
+        self.assertEqual(len(fstring.values), 1)
+
+        fv = fstring.values[0]
+        self.assertEqual(type(fv), ast.FormattedValue)
+
+        format_spec = fv.format_spec
+        self.assertEqual(type(format_spec), ast.JoinedStr)
+        self.assertEqual(len(format_spec.values), 0)
+
+    def test_ast_fstring_format_spec(self):
+        expr = "f'{1:{name}}'"
+
+        mod = ast.parse(expr)
+        self.assertEqual(type(mod), ast.Module)
+        self.assertEqual(len(mod.body), 1)
+
+        fstring = mod.body[0].value
+        self.assertEqual(type(fstring), ast.JoinedStr)
+        self.assertEqual(len(fstring.values), 1)
+
+        fv = fstring.values[0]
+        self.assertEqual(type(fv), ast.FormattedValue)
+
+        format_spec = fv.format_spec
+        self.assertEqual(type(format_spec), ast.JoinedStr)
+        self.assertEqual(len(format_spec.values), 1)
+
+        format_spec_value = format_spec.values[0]
+        self.assertEqual(type(format_spec_value), ast.FormattedValue)
+        self.assertEqual(format_spec_value.value.id, 'name')
+
+        expr = "f'{1:{name1}{name2}}'"
+
+        mod = ast.parse(expr)
+        self.assertEqual(type(mod), ast.Module)
+        self.assertEqual(len(mod.body), 1)
+
+        fstring = mod.body[0].value
+        self.assertEqual(type(fstring), ast.JoinedStr)
+        self.assertEqual(len(fstring.values), 1)
+
+        fv = fstring.values[0]
+        self.assertEqual(type(fv), ast.FormattedValue)
+
+        format_spec = fv.format_spec
+        self.assertEqual(type(format_spec), ast.JoinedStr)
+        self.assertEqual(len(format_spec.values), 2)
+
+        format_spec_value = format_spec.values[0]
+        self.assertEqual(type(format_spec_value), ast.FormattedValue)
+        self.assertEqual(format_spec_value.value.id, 'name1')
+
+        format_spec_value = format_spec.values[1]
+        self.assertEqual(type(format_spec_value), ast.FormattedValue)
+        self.assertEqual(format_spec_value.value.id, 'name2')
+
+
     def test_docstring(self):
         def f():
             f'''Not a docstring'''
@@ -661,15 +729,50 @@ def test_comments(self):
         self.assertEqual(f'{"#"}', '#')
         self.assertEqual(f'{d["#"]}', 'hash')
 
-        self.assertAllRaise(SyntaxError, "f-string expression part cannot include '#'",
-                            ["f'{1#}'",   # error because the expression becomes "(1#)"
-                             "f'{3(#)}'",
+        self.assertAllRaise(SyntaxError, "'{' was never closed",
+                            ["f'{1#}'",   # error because everything after '#' is a comment
                              "f'{#}'",
+                             "f'one: {1#}'",
+                             "f'{1# one} {2 this is a comment still#}'",
                              ])
         self.assertAllRaise(SyntaxError, r"f-string: unmatched '\)'",
                             ["f'{)#}'",   # When wrapped in parens, this becomes
                                           #  '()#)'.  Make sure that doesn't compile.
                              ])
+        self.assertEqual(f'''A complex trick: {
+2  # two
+}''', 'A complex trick: 2')
+        self.assertEqual(f'''
+{
+40 # fourty
++  # plus
+2  # two
+}''', '\n42')
+        self.assertEqual(f'''
+{
+40 # fourty
++  # plus
+2  # two
+}''', '\n42')
+
+        self.assertEqual(f'''
+# this is not a comment
+{ # the following operation it's
+3 # this is a number
+* 2}''', '\n# this is not a comment\n6')
+        self.assertEqual(f'''
+{# f'a {comment}'
+86 # constant
+# nothing more
+}''', '\n86')
+
+        self.assertAllRaise(SyntaxError, r"f-string: valid expression required before '}'",
+                            ["""f'''
+{
+# only a comment
+}'''
+""", # this is equivalent to f'{}'
+                             ])
 
     def test_many_expressions(self):
         # Create a string with many expressions in it. Note that
@@ -729,6 +832,16 @@ def test_format_specifier_expressions(self):
                              """f'{"s"!{"r"}}'""",
                              ])
 
+    def test_custom_format_specifier(self):
+        class CustomFormat:
+            def __format__(self, format_spec):
+                return format_spec
+
+        self.assertEqual(f'{CustomFormat():\n}', '\n')
+        self.assertEqual(f'{CustomFormat():\u2603}', '☃')
+        with self.assertWarns(SyntaxWarning):
+            exec(r'f"{F():¯\_(ツ)_/¯}"', {'F': CustomFormat})
+
     def test_side_effect_order(self):
         class X:
             def __init__(self):
@@ -859,9 +972,12 @@ def test_backslashes_in_string_part(self):
         self.assertEqual(f'2\x203', '2 3')
         self.assertEqual(f'\x203', ' 3')
 
-        with self.assertWarns(DeprecationWarning):  # invalid escape sequence
+        with self.assertWarns(SyntaxWarning):  # invalid escape sequence
             value = eval(r"f'\{6*7}'")
         self.assertEqual(value, '\\42')
+        with self.assertWarns(SyntaxWarning):  # invalid escape sequence
+            value = eval(r"f'\g'")
+        self.assertEqual(value, '\\g')
         self.assertEqual(f'\\{6*7}', '\\42')
         self.assertEqual(fr'\{6*7}', '\\42')
 
@@ -960,6 +1076,10 @@ def test_lambda(self):
                              "f'{lambda x:}'",
                              "f'{lambda :}'",
                              ])
+        # Ensure the detection of invalid lambdas doesn't trigger detection
+        # for valid lambdas in the second error pass
+        with self.assertRaisesRegex(SyntaxError, "invalid syntax"):
+            compile("lambda name_3=f'{name_4}': {name_3}\n1 $ 1", "<string>", "exec")
 
         # but don't emit the paren warning in general cases
         with self.assertRaisesRegex(SyntaxError, "f-string: expecting a valid expression after '{'"):
@@ -989,7 +1109,7 @@ def test_fstring_backslash_before_double_bracket(self):
         ]
         for case, expected_result in deprecated_cases:
             with self.subTest(case=case, expected_result=expected_result):
-                with self.assertWarns(DeprecationWarning):
+                with self.assertWarns(SyntaxWarning):
                     result = eval(case)
                 self.assertEqual(result, expected_result)
         self.assertEqual(fr'\{{\}}', '\\{\\}')
@@ -998,6 +1118,12 @@ def test_fstring_backslash_before_double_bracket(self):
         self.assertEqual(fr'\}}{1+1}', '\\}2')
         self.assertEqual(fr'{1+1}\}}', '2\\}')
 
+    def test_fstring_backslash_before_double_bracket_warns_once(self):
+        with self.assertWarns(SyntaxWarning) as w:
+            eval(r"f'\{{'")
+        self.assertEqual(len(w.warnings), 1)
+        self.assertEqual(w.warnings[0].category, SyntaxWarning)
+
     def test_fstring_backslash_prefix_raw(self):
         self.assertEqual(f'\\', '\\')
         self.assertEqual(f'\\\\', '\\\\')
@@ -1502,6 +1628,9 @@ def __repr__(self):
         self.assertEqual(f'X{x  =  }Y', 'Xx  =  '+repr(x)+'Y')
         self.assertEqual(f"sadsd {1 + 1 =  :{1 + 1:1d}f}", "sadsd 1 + 1 =  2.000000")
 
+        self.assertEqual(f"{1+2 = # my comment
+  }", '1+2 = \n  3')
+
         # These next lines contains tabs.  Backslash escapes don't
         # work in f-strings.
         # patchcheck doesn't like these tabs.  So the only way to test
@@ -1558,7 +1687,21 @@ def test_not_closing_quotes(self):
         self.assertAllRaise(SyntaxError, "unterminated f-string literal", ['f"', "f'"])
         self.assertAllRaise(SyntaxError, "unterminated triple-quoted f-string literal",
                             ['f"""', "f'''"])
-
+        # Ensure that the errors are reported at the correct line number.
+        data = '''\
+x = 1 + 1
+y = 2 + 2
+z = f"""
+sdfjnsdfjsdf
+sdfsdfs{1+
+2} dfigdf {3+
+4}sdufsd""
+'''
+        try:
+            compile(data, "?", "exec")
+        except SyntaxError as e:
+            self.assertEqual(e.text, 'z = f"""')
+            self.assertEqual(e.lineno, 3)
     def test_syntax_error_after_debug(self):
         self.assertAllRaise(SyntaxError, "f-string: expecting a valid expression after '{'",
                             [
@@ -1573,5 +1716,37 @@ def test_syntax_error_after_debug(self):
                                 "f'{1=}{1;}'",
                             ])
 
+    def test_debug_in_file(self):
+        with temp_cwd():
+            script = 'script.py'
+            with open('script.py', 'w') as f:
+                f.write(f"""\
+print(f'''{{
+3
+=}}''')""")
+
+            _, stdout, _ = assert_python_ok(script)
+        self.assertEqual(stdout.decode('utf-8').strip().replace('\r\n', '\n').replace('\r', '\n'),
+                         "3\n=3")
+
+    def test_syntax_warning_infinite_recursion_in_file(self):
+        with temp_cwd():
+            script = 'script.py'
+            with open(script, 'w') as f:
+                f.write(r"print(f'\{1}')")
+
+            _, stdout, stderr = assert_python_ok(script)
+            self.assertIn(rb'\1', stdout)
+            self.assertEqual(len(stderr.strip().splitlines()), 2)
+
+    def test_fstring_without_formatting_bytecode(self):
+        # f-string without any formatting should emit the same bytecode
+        # as a normal string. See gh-99606.
+        def get_code(s):
+            return [(i.opname, i.oparg) for i in dis.get_instructions(s)]
+
+        for s in ["", "some string"]:
+            self.assertEqual(get_code(f"'{s}'"), get_code(f"f'{s}'"))
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ftplib.py b/Lib/test/test_ftplib.py
index 544228e3bab47b..2f191ea7a44c16 100644
--- a/Lib/test/test_ftplib.py
+++ b/Lib/test/test_ftplib.py
@@ -32,7 +32,7 @@
 DEFAULT_ENCODING = 'utf-8'
 # the dummy data returned by server over the data channel when
 # RETR, LIST, NLST, MLSD commands are issued
-RETR_DATA = 'abcde12345\r\n' * 1000 + 'non-ascii char \xAE\r\n'
+RETR_DATA = 'abcde\xB9\xB2\xB3\xA4\xA6\r\n' * 1000
 LIST_DATA = 'foo\r\nbar\r\n non-ascii char \xAE\r\n'
 NLST_DATA = 'foo\r\nbar\r\n non-ascii char \xAE\r\n'
 MLSD_DATA = ("type=cdir;perm=el;unique==keVO1+ZF4; test\r\n"
@@ -67,11 +67,11 @@ class DummyDTPHandler(asynchat.async_chat):
     def __init__(self, conn, baseclass):
         asynchat.async_chat.__init__(self, conn)
         self.baseclass = baseclass
-        self.baseclass.last_received_data = ''
+        self.baseclass.last_received_data = bytearray()
         self.encoding = baseclass.encoding
 
     def handle_read(self):
-        new_data = self.recv(1024).decode(self.encoding, 'replace')
+        new_data = self.recv(1024)
         self.baseclass.last_received_data += new_data
 
     def handle_close(self):
@@ -107,7 +107,7 @@ def __init__(self, conn, encoding=DEFAULT_ENCODING):
         self.in_buffer = []
         self.dtp = None
         self.last_received_cmd = None
-        self.last_received_data = ''
+        self.last_received_data = bytearray()
         self.next_response = ''
         self.next_data = None
         self.rest = None
@@ -325,8 +325,8 @@ def handle_error(self):
 
 if ssl is not None:
 
-    CERTFILE = os.path.join(os.path.dirname(__file__), "keycert3.pem")
-    CAFILE = os.path.join(os.path.dirname(__file__), "pycacert.pem")
+    CERTFILE = os.path.join(os.path.dirname(__file__), "certdata", "keycert3.pem")
+    CAFILE = os.path.join(os.path.dirname(__file__), "certdata", "pycacert.pem")
 
     class SSLConnection(asyncore.dispatcher):
         """An asyncore.dispatcher subclass supporting TLS/SSL."""
@@ -590,19 +590,17 @@ def test_abort(self):
         self.client.abort()
 
     def test_retrbinary(self):
-        def callback(data):
-            received.append(data.decode(self.client.encoding))
         received = []
-        self.client.retrbinary('retr', callback)
-        self.check_data(''.join(received), RETR_DATA)
+        self.client.retrbinary('retr', received.append)
+        self.check_data(b''.join(received),
+                        RETR_DATA.encode(self.client.encoding))
 
     def test_retrbinary_rest(self):
-        def callback(data):
-            received.append(data.decode(self.client.encoding))
         for rest in (0, 10, 20):
             received = []
-            self.client.retrbinary('retr', callback, rest=rest)
-            self.check_data(''.join(received), RETR_DATA[rest:])
+            self.client.retrbinary('retr', received.append, rest=rest)
+            self.check_data(b''.join(received),
+                            RETR_DATA[rest:].encode(self.client.encoding))
 
     def test_retrlines(self):
         received = []
@@ -612,7 +610,8 @@ def test_retrlines(self):
     def test_storbinary(self):
         f = io.BytesIO(RETR_DATA.encode(self.client.encoding))
         self.client.storbinary('stor', f)
-        self.check_data(self.server.handler_instance.last_received_data, RETR_DATA)
+        self.check_data(self.server.handler_instance.last_received_data,
+                        RETR_DATA.encode(self.server.encoding))
         # test new callback arg
         flag = []
         f.seek(0)
@@ -631,7 +630,8 @@ def test_storlines(self):
         data = RETR_DATA.replace('\r\n', '\n').encode(self.client.encoding)
         f = io.BytesIO(data)
         self.client.storlines('stor', f)
-        self.check_data(self.server.handler_instance.last_received_data, RETR_DATA)
+        self.check_data(self.server.handler_instance.last_received_data,
+                        RETR_DATA.encode(self.server.encoding))
         # test new callback arg
         flag = []
         f.seek(0)
@@ -649,7 +649,7 @@ def test_nlst(self):
 
     def test_dir(self):
         l = []
-        self.client.dir(lambda x: l.append(x))
+        self.client.dir(l.append)
         self.assertEqual(''.join(l), LIST_DATA.replace('\r\n', ''))
 
     def test_mlsd(self):
@@ -889,12 +889,10 @@ def test_makepasv(self):
 
     def test_transfer(self):
         def retr():
-            def callback(data):
-                received.append(data.decode(self.client.encoding))
             received = []
-            self.client.retrbinary('retr', callback)
-            self.assertEqual(len(''.join(received)), len(RETR_DATA))
-            self.assertEqual(''.join(received), RETR_DATA)
+            self.client.retrbinary('retr', received.append)
+            self.assertEqual(b''.join(received),
+                             RETR_DATA.encode(self.client.encoding))
         self.client.set_pasv(True)
         retr()
         self.client.set_pasv(False)
diff --git a/Lib/test/test_funcattrs.py b/Lib/test/test_funcattrs.py
index 77977d0ae966f8..b3fc5ad42e7fde 100644
--- a/Lib/test/test_funcattrs.py
+++ b/Lib/test/test_funcattrs.py
@@ -1,6 +1,8 @@
 import textwrap
 import types
+import typing
 import unittest
+import warnings
 
 
 def global_function():
@@ -69,6 +71,27 @@ def test(): pass
         test.__code__ = self.b.__code__
         self.assertEqual(test(), 3) # self.b always returns 3, arbitrarily
 
+    def test_invalid___code___assignment(self):
+        def A(): pass
+        def B(): yield
+        async def C(): yield
+        async def D(x): await x
+
+        for src in [A, B, C, D]:
+            for dst in [A, B, C, D]:
+                if src == dst:
+                    continue
+
+                assert src.__code__.co_flags != dst.__code__.co_flags
+                prev = dst.__code__
+                try:
+                    with self.assertWarnsRegex(DeprecationWarning, 'code object of non-matching type'):
+                        dst.__code__ = src.__code__
+                finally:
+                    with warnings.catch_warnings():
+                        warnings.filterwarnings('ignore', '', DeprecationWarning)
+                        dst.__code__ = prev
+
     def test___globals__(self):
         self.assertIs(self.b.__globals__, globals())
         self.cannot_set_attr(self.b, '__globals__', 2,
@@ -190,6 +213,23 @@ def test___qualname__(self):
         # __qualname__ must be a string
         self.cannot_set_attr(self.b, '__qualname__', 7, TypeError)
 
+    def test___type_params__(self):
+        def generic[T](): pass
+        def not_generic(): pass
+        lambda_ = lambda: ...
+        T, = generic.__type_params__
+        self.assertIsInstance(T, typing.TypeVar)
+        self.assertEqual(generic.__type_params__, (T,))
+        for func in (not_generic, lambda_):
+            with self.subTest(func=func):
+                self.assertEqual(func.__type_params__, ())
+                with self.assertRaises(TypeError):
+                    del func.__type_params__
+                with self.assertRaises(TypeError):
+                    func.__type_params__ = 42
+                func.__type_params__ = (T,)
+                self.assertEqual(func.__type_params__, (T,))
+
     def test___code__(self):
         num_one, num_two = 7, 8
         def a(): pass
diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index af286052a7d560..e4de2c5ede15f1 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -26,10 +26,16 @@
 
 py_functools = import_helper.import_fresh_module('functools',
                                                  blocked=['_functools'])
-c_functools = import_helper.import_fresh_module('functools')
+c_functools = import_helper.import_fresh_module('functools',
+                                                fresh=['_functools'])
 
 decimal = import_helper.import_fresh_module('decimal', fresh=['_decimal'])
 
+_partial_types = [py_functools.partial]
+if c_functools:
+    _partial_types.append(c_functools.partial)
+
+
 @contextlib.contextmanager
 def replaced_module(name, replacement):
     original_module = sys.modules[name]
@@ -201,7 +207,7 @@ def test_repr(self):
         kwargs = {'a': object(), 'b': object()}
         kwargs_reprs = ['a={a!r}, b={b!r}'.format_map(kwargs),
                         'b={b!r}, a={a!r}'.format_map(kwargs)]
-        if self.partial in (c_functools.partial, py_functools.partial):
+        if self.partial in _partial_types:
             name = 'functools.partial'
         else:
             name = self.partial.__name__
@@ -223,7 +229,7 @@ def test_repr(self):
                        for kwargs_repr in kwargs_reprs])
 
     def test_recursive_repr(self):
-        if self.partial in (c_functools.partial, py_functools.partial):
+        if self.partial in _partial_types:
             name = 'functools.partial'
         else:
             name = self.partial.__name__
@@ -250,7 +256,7 @@ def test_recursive_repr(self):
             f.__setstate__((capture, (), {}, {}))
 
     def test_pickle(self):
-        with self.AllowPickle():
+        with replaced_module('functools', self.module):
             f = self.partial(signature, ['asdf'], bar=[True])
             f.attr = []
             for proto in range(pickle.HIGHEST_PROTOCOL + 1):
@@ -333,7 +339,7 @@ def test_setstate_subclasses(self):
         self.assertIs(type(r[0]), tuple)
 
     def test_recursive_pickle(self):
-        with self.AllowPickle():
+        with replaced_module('functools', self.module):
             f = self.partial(capture)
             f.__setstate__((f, (), {}, {}))
             try:
@@ -387,14 +393,9 @@ def __getitem__(self, key):
 @unittest.skipUnless(c_functools, 'requires the C _functools module')
 class TestPartialC(TestPartial, unittest.TestCase):
     if c_functools:
+        module = c_functools
         partial = c_functools.partial
 
-    class AllowPickle:
-        def __enter__(self):
-            return self
-        def __exit__(self, type, value, tb):
-            return False
-
     def test_attributes_unwritable(self):
         # attributes should not be writable
         p = self.partial(capture, 1, 2, a=10, b=20)
@@ -437,15 +438,9 @@ def __str__(self):
 
 
 class TestPartialPy(TestPartial, unittest.TestCase):
+    module = py_functools
     partial = py_functools.partial
 
-    class AllowPickle:
-        def __init__(self):
-            self._cm = replaced_module("functools", py_functools)
-        def __enter__(self):
-            return self._cm.__enter__()
-        def __exit__(self, type, value, tb):
-            return self._cm.__exit__(type, value, tb)
 
 if c_functools:
     class CPartialSubclass(c_functools.partial):
@@ -617,7 +612,7 @@ def check_wrapper(self, wrapper, wrapped,
 
 
     def _default_update(self):
-        def f(a:'This is a new annotation'):
+        def f[T](a:'This is a new annotation'):
             """This is a test"""
             pass
         f.attr = 'This is also a test'
@@ -630,12 +625,14 @@ def wrapper(b:'This is the prior annotation'):
     def test_default_update(self):
         wrapper, f = self._default_update()
         self.check_wrapper(wrapper, f)
+        T, = f.__type_params__
         self.assertIs(wrapper.__wrapped__, f)
         self.assertEqual(wrapper.__name__, 'f')
         self.assertEqual(wrapper.__qualname__, f.__qualname__)
         self.assertEqual(wrapper.attr, 'This is also a test')
         self.assertEqual(wrapper.__annotations__['a'], 'This is a new annotation')
         self.assertNotIn('b', wrapper.__annotations__)
+        self.assertEqual(wrapper.__type_params__, (T,))
 
     @unittest.skipIf(sys.flags.optimize >= 2,
                      "Docstrings are omitted with -O2 and above")
@@ -1870,9 +1867,10 @@ def orig(): ...
 def py_cached_func(x, y):
     return 3 * x + y
 
-@c_functools.lru_cache()
-def c_cached_func(x, y):
-    return 3 * x + y
+if c_functools:
+    @c_functools.lru_cache()
+    def c_cached_func(x, y):
+        return 3 * x + y
 
 
 class TestLRUPy(TestLRU, unittest.TestCase):
@@ -1889,18 +1887,20 @@ def cached_staticmeth(x, y):
         return 3 * x + y
 
 
+@unittest.skipUnless(c_functools, 'requires the C _functools module')
 class TestLRUC(TestLRU, unittest.TestCase):
-    module = c_functools
-    cached_func = c_cached_func,
+    if c_functools:
+        module = c_functools
+        cached_func = c_cached_func,
 
-    @module.lru_cache()
-    def cached_meth(self, x, y):
-        return 3 * x + y
+        @module.lru_cache()
+        def cached_meth(self, x, y):
+            return 3 * x + y
 
-    @staticmethod
-    @module.lru_cache()
-    def cached_staticmeth(x, y):
-        return 3 * x + y
+        @staticmethod
+        @module.lru_cache()
+        def cached_staticmeth(x, y):
+            return 3 * x + y
 
 
 class TestSingleDispatch(unittest.TestCase):
@@ -2472,6 +2472,74 @@ def _(arg):
         self.assertTrue(A.t(''))
         self.assertEqual(A.t(0.0), 0.0)
 
+    def test_slotted_class(self):
+        class Slot:
+            __slots__ = ('a', 'b')
+            @functools.singledispatchmethod
+            def go(self, item, arg):
+                pass
+
+            @go.register
+            def _(self, item: int, arg):
+                return item + arg
+
+        s = Slot()
+        self.assertEqual(s.go(1, 1), 2)
+
+    def test_classmethod_slotted_class(self):
+        class Slot:
+            __slots__ = ('a', 'b')
+            @functools.singledispatchmethod
+            @classmethod
+            def go(cls, item, arg):
+                pass
+
+            @go.register
+            @classmethod
+            def _(cls, item: int, arg):
+                return item + arg
+
+        s = Slot()
+        self.assertEqual(s.go(1, 1), 2)
+        self.assertEqual(Slot.go(1, 1), 2)
+
+    def test_staticmethod_slotted_class(self):
+        class A:
+            __slots__ = ['a']
+            @functools.singledispatchmethod
+            @staticmethod
+            def t(arg):
+                return arg
+            @t.register(int)
+            @staticmethod
+            def _(arg):
+                return isinstance(arg, int)
+            @t.register(str)
+            @staticmethod
+            def _(arg):
+                return isinstance(arg, str)
+        a = A()
+
+        self.assertTrue(A.t(0))
+        self.assertTrue(A.t(''))
+        self.assertEqual(A.t(0.0), 0.0)
+        self.assertTrue(a.t(0))
+        self.assertTrue(a.t(''))
+        self.assertEqual(a.t(0.0), 0.0)
+
+    def test_assignment_behavior(self):
+        # see gh-106448
+        class A:
+            @functools.singledispatchmethod
+            def t(arg):
+                return arg
+
+        a = A()
+        a.t.foo = 'bar'
+        a2 = A()
+        with self.assertRaises(AttributeError):
+            a2.t.foo
+
     def test_classmethod_register(self):
         class A:
             def __init__(self, arg):
@@ -3035,6 +3103,28 @@ def test_access_from_class(self):
     def test_doc(self):
         self.assertEqual(CachedCostItem.cost.__doc__, "The cost of the item.")
 
+    def test_module(self):
+        self.assertEqual(CachedCostItem.cost.__module__, CachedCostItem.__module__)
+
+    def test_subclass_with___set__(self):
+        """Caching still works for a subclass defining __set__."""
+        class readonly_cached_property(py_functools.cached_property):
+            def __set__(self, obj, value):
+                raise AttributeError("read only property")
+
+        class Test:
+            def __init__(self, prop):
+                self._prop = prop
+
+            @readonly_cached_property
+            def prop(self):
+                return self._prop
+
+        t = Test(1)
+        self.assertEqual(t.prop, 1)
+        t._prop = 999
+        self.assertEqual(t.prop, 1)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_future.py b/Lib/test/test_future.py
deleted file mode 100644
index b8b591a1bcf2c6..00000000000000
--- a/Lib/test/test_future.py
+++ /dev/null
@@ -1,442 +0,0 @@
-# Test various flavors of legal and illegal future statements
-
-import __future__
-import ast
-import unittest
-from test.support import import_helper
-from textwrap import dedent
-import os
-import re
-import sys
-
-rx = re.compile(r'\((\S+).py, line (\d+)')
-
-def get_error_location(msg):
-    mo = rx.search(str(msg))
-    return mo.group(1, 2)
-
-class FutureTest(unittest.TestCase):
-
-    def check_syntax_error(self, err, basename, lineno, offset=1):
-        self.assertIn('%s.py, line %d' % (basename, lineno), str(err))
-        self.assertEqual(os.path.basename(err.filename), basename + '.py')
-        self.assertEqual(err.lineno, lineno)
-        self.assertEqual(err.offset, offset)
-
-    def test_future1(self):
-        with import_helper.CleanImport('future_test1'):
-            from test import future_test1
-            self.assertEqual(future_test1.result, 6)
-
-    def test_future2(self):
-        with import_helper.CleanImport('future_test2'):
-            from test import future_test2
-            self.assertEqual(future_test2.result, 6)
-
-    def test_future3(self):
-        with import_helper.CleanImport('test_future3'):
-            from test import test_future3
-
-    def test_badfuture3(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future3
-        self.check_syntax_error(cm.exception, "badsyntax_future3", 3)
-
-    def test_badfuture4(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future4
-        self.check_syntax_error(cm.exception, "badsyntax_future4", 3)
-
-    def test_badfuture5(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future5
-        self.check_syntax_error(cm.exception, "badsyntax_future5", 4)
-
-    def test_badfuture6(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future6
-        self.check_syntax_error(cm.exception, "badsyntax_future6", 3)
-
-    def test_badfuture7(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future7
-        self.check_syntax_error(cm.exception, "badsyntax_future7", 3, 54)
-
-    def test_badfuture8(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future8
-        self.check_syntax_error(cm.exception, "badsyntax_future8", 3)
-
-    def test_badfuture9(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future9
-        self.check_syntax_error(cm.exception, "badsyntax_future9", 3)
-
-    def test_badfuture10(self):
-        with self.assertRaises(SyntaxError) as cm:
-            from test import badsyntax_future10
-        self.check_syntax_error(cm.exception, "badsyntax_future10", 3)
-
-    def test_ensure_flags_dont_clash(self):
-        # bpo-39562: test that future flags and compiler flags doesn't clash
-
-        # obtain future flags (CO_FUTURE_***) from the __future__ module
-        flags = {
-            f"CO_FUTURE_{future.upper()}": getattr(__future__, future).compiler_flag
-            for future in __future__.all_feature_names
-        }
-        # obtain some of the exported compiler flags (PyCF_***) from the ast module
-        flags |= {
-            flag: getattr(ast, flag)
-            for flag in dir(ast) if flag.startswith("PyCF_")
-        }
-        self.assertCountEqual(set(flags.values()), flags.values())
-
-    def test_parserhack(self):
-        # test that the parser.c::future_hack function works as expected
-        # Note: although this test must pass, it's not testing the original
-        #       bug as of 2.6 since the with statement is not optional and
-        #       the parser hack disabled. If a new keyword is introduced in
-        #       2.6, change this to refer to the new future import.
-        try:
-            exec("from __future__ import print_function; print 0")
-        except SyntaxError:
-            pass
-        else:
-            self.fail("syntax error didn't occur")
-
-        try:
-            exec("from __future__ import (print_function); print 0")
-        except SyntaxError:
-            pass
-        else:
-            self.fail("syntax error didn't occur")
-
-    def test_multiple_features(self):
-        with import_helper.CleanImport("test.test_future5"):
-            from test import test_future5
-
-    def test_unicode_literals_exec(self):
-        scope = {}
-        exec("from __future__ import unicode_literals; x = ''", {}, scope)
-        self.assertIsInstance(scope["x"], str)
-
-class AnnotationsFutureTestCase(unittest.TestCase):
-    template = dedent(
-        """
-        from __future__ import annotations
-        def f() -> {ann}:
-            ...
-        def g(arg: {ann}) -> None:
-            ...
-        async def f2() -> {ann}:
-            ...
-        async def g2(arg: {ann}) -> None:
-            ...
-        class H:
-            var: {ann}
-            object.attr: {ann}
-        var: {ann}
-        var2: {ann} = None
-        object.attr: {ann}
-        """
-    )
-
-    def getActual(self, annotation):
-        scope = {}
-        exec(self.template.format(ann=annotation), {}, scope)
-        func_ret_ann = scope['f'].__annotations__['return']
-        func_arg_ann = scope['g'].__annotations__['arg']
-        async_func_ret_ann = scope['f2'].__annotations__['return']
-        async_func_arg_ann = scope['g2'].__annotations__['arg']
-        var_ann1 = scope['__annotations__']['var']
-        var_ann2 = scope['__annotations__']['var2']
-        self.assertEqual(func_ret_ann, func_arg_ann)
-        self.assertEqual(func_ret_ann, async_func_ret_ann)
-        self.assertEqual(func_ret_ann, async_func_arg_ann)
-        self.assertEqual(func_ret_ann, var_ann1)
-        self.assertEqual(func_ret_ann, var_ann2)
-        return func_ret_ann
-
-    def assertAnnotationEqual(
-        self, annotation, expected=None, drop_parens=False, is_tuple=False,
-    ):
-        actual = self.getActual(annotation)
-        if expected is None:
-            expected = annotation if not is_tuple else annotation[1:-1]
-        if drop_parens:
-            self.assertNotEqual(actual, expected)
-            actual = actual.replace("(", "").replace(")", "")
-
-        self.assertEqual(actual, expected)
-
-    def _exec_future(self, code):
-        scope = {}
-        exec(
-            "from __future__ import annotations\n"
-            + code, scope
-        )
-        return scope
-
-    def test_annotations(self):
-        eq = self.assertAnnotationEqual
-        eq('...')
-        eq("'some_string'")
-        eq("u'some_string'")
-        eq("b'\\xa3'")
-        eq('Name')
-        eq('None')
-        eq('True')
-        eq('False')
-        eq('1')
-        eq('1.0')
-        eq('1j')
-        eq('True or False')
-        eq('True or False or None')
-        eq('True and False')
-        eq('True and False and None')
-        eq('Name1 and Name2 or Name3')
-        eq('Name1 and (Name2 or Name3)')
-        eq('Name1 or Name2 and Name3')
-        eq('(Name1 or Name2) and Name3')
-        eq('Name1 and Name2 or Name3 and Name4')
-        eq('Name1 or Name2 and Name3 or Name4')
-        eq('a + b + (c + d)')
-        eq('a * b * (c * d)')
-        eq('(a ** b) ** c ** d')
-        eq('v1 << 2')
-        eq('1 >> v2')
-        eq('1 % finished')
-        eq('1 + v2 - v3 * 4 ^ 5 ** v6 / 7 // 8')
-        eq('not great')
-        eq('not not great')
-        eq('~great')
-        eq('+value')
-        eq('++value')
-        eq('-1')
-        eq('~int and not v1 ^ 123 + v2 | True')
-        eq('a + (not b)')
-        eq('lambda: None')
-        eq('lambda arg: None')
-        eq('lambda a=True: a')
-        eq('lambda a, b, c=True: a')
-        eq("lambda a, b, c=True, *, d=1 << v2, e='str': a")
-        eq("lambda a, b, c=True, *vararg, d, e='str', **kwargs: a + b")
-        eq("lambda a, /, b, c=True, *vararg, d, e='str', **kwargs: a + b")
-        eq('lambda x, /: x')
-        eq('lambda x=1, /: x')
-        eq('lambda x, /, y: x + y')
-        eq('lambda x=1, /, y=2: x + y')
-        eq('lambda x, /, y=1: x + y')
-        eq('lambda x, /, y=1, *, z=3: x + y + z')
-        eq('lambda x=1, /, y=2, *, z=3: x + y + z')
-        eq('lambda x=1, /, y=2, *, z: x + y + z')
-        eq('lambda x=1, y=2, z=3, /, w=4, *, l, l2: x + y + z + w + l + l2')
-        eq('lambda x=1, y=2, z=3, /, w=4, *, l, l2, **kwargs: x + y + z + w + l + l2')
-        eq('lambda x, /, y=1, *, z: x + y + z')
-        eq('lambda x: lambda y: x + y')
-        eq('1 if True else 2')
-        eq('str or None if int or True else str or bytes or None')
-        eq('str or None if (1 if True else 2) else str or bytes or None')
-        eq("0 if not x else 1 if x > 0 else -1")
-        eq("(1 if x > 0 else -1) if x else 0")
-        eq("{'2.7': dead, '3.7': long_live or die_hard}")
-        eq("{'2.7': dead, '3.7': long_live or die_hard, **{'3.6': verygood}}")
-        eq("{**a, **b, **c}")
-        eq("{'2.7', '3.6', '3.7', '3.8', '3.9', '4.0' if gilectomy else '3.10'}")
-        eq("{*a, *b, *c}")
-        eq("({'a': 'b'}, True or False, +value, 'string', b'bytes') or None")
-        eq("()")
-        eq("(a,)")
-        eq("(a, b)")
-        eq("(a, b, c)")
-        eq("(*a, *b, *c)")
-        eq("[]")
-        eq("[1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or A, 11 or B, 12 or C]")
-        eq("[*a, *b, *c]")
-        eq("{i for i in (1, 2, 3)}")
-        eq("{i ** 2 for i in (1, 2, 3)}")
-        eq("{i ** 2 for i, _ in ((1, 'a'), (2, 'b'), (3, 'c'))}")
-        eq("{i ** 2 + j for i in (1, 2, 3) for j in (1, 2, 3)}")
-        eq("[i for i in (1, 2, 3)]")
-        eq("[i ** 2 for i in (1, 2, 3)]")
-        eq("[i ** 2 for i, _ in ((1, 'a'), (2, 'b'), (3, 'c'))]")
-        eq("[i ** 2 + j for i in (1, 2, 3) for j in (1, 2, 3)]")
-        eq("(i for i in (1, 2, 3))")
-        eq("(i ** 2 for i in (1, 2, 3))")
-        eq("(i ** 2 for i, _ in ((1, 'a'), (2, 'b'), (3, 'c')))")
-        eq("(i ** 2 + j for i in (1, 2, 3) for j in (1, 2, 3))")
-        eq("{i: 0 for i in (1, 2, 3)}")
-        eq("{i: j for i, j in ((1, 'a'), (2, 'b'), (3, 'c'))}")
-        eq("[(x, y) for x, y in (a, b)]")
-        eq("[(x,) for x, in (a,)]")
-        eq("Python3 > Python2 > COBOL")
-        eq("Life is Life")
-        eq("call()")
-        eq("call(arg)")
-        eq("call(kwarg='hey')")
-        eq("call(arg, kwarg='hey')")
-        eq("call(arg, *args, another, kwarg='hey')")
-        eq("call(arg, another, kwarg='hey', **kwargs, kwarg2='ho')")
-        eq("lukasz.langa.pl")
-        eq("call.me(maybe)")
-        eq("1 .real")
-        eq("1.0.real")
-        eq("....__class__")
-        eq("list[str]")
-        eq("dict[str, int]")
-        eq("set[str,]")
-        eq("tuple[()]")
-        eq("tuple[str, ...]")
-        eq("tuple[str, *types]")
-        eq("tuple[str, int, (str, int)]")
-        eq("tuple[*int, str, str, (str, int)]")
-        eq("tuple[str, int, float, dict[str, int]]")
-        eq("slice[0]")
-        eq("slice[0:1]")
-        eq("slice[0:1:2]")
-        eq("slice[:]")
-        eq("slice[:-1]")
-        eq("slice[1:]")
-        eq("slice[::-1]")
-        eq("slice[:,]")
-        eq("slice[1:2,]")
-        eq("slice[1:2:3,]")
-        eq("slice[1:2, 1]")
-        eq("slice[1:2, 2, 3]")
-        eq("slice[()]")
-        # Note that `slice[*Ts]`, `slice[*Ts,]`, and `slice[(*Ts,)]` all have
-        # the same AST, but only `slice[*Ts,]` passes this test, because that's
-        # what the unparser produces.
-        eq("slice[*Ts,]")
-        eq("slice[1, *Ts]")
-        eq("slice[*Ts, 2]")
-        eq("slice[1, *Ts, 2]")
-        eq("slice[*Ts, *Ts]")
-        eq("slice[1, *Ts, *Ts]")
-        eq("slice[*Ts, 1, *Ts]")
-        eq("slice[*Ts, *Ts, 1]")
-        eq("slice[1, *Ts, *Ts, 2]")
-        eq("slice[1:2, *Ts]")
-        eq("slice[*Ts, 1:2]")
-        eq("slice[1:2, *Ts, 3:4]")
-        eq("slice[a, b:c, d:e:f]")
-        eq("slice[(x for x in a)]")
-        eq('str or None if sys.version_info[0] > (3,) else str or bytes or None')
-        eq("f'f-string without formatted values is just a string'")
-        eq("f'{{NOT a formatted value}}'")
-        eq("f'some f-string with {a} {few():.2f} {formatted.values!r}'")
-        eq('''f"{f'{nested} inner'} outer"''')
-        eq("f'space between opening braces: { {a for a in (1, 2, 3)}}'")
-        eq("f'{(lambda x: x)}'")
-        eq("f'{(None if a else lambda x: x)}'")
-        eq("f'{x}'")
-        eq("f'{x!r}'")
-        eq("f'{x!a}'")
-        eq('[x for x in (a if b else c)]')
-        eq('[x for x in a if (b if c else d)]')
-        eq('f(x for x in a)')
-        eq('f(1, (x for x in a))')
-        eq('f((x for x in a), 2)')
-        eq('(((a)))', 'a')
-        eq('(((a, b)))', '(a, b)')
-        eq("1 + 2 + 3")
-
-    def test_fstring_debug_annotations(self):
-        # f-strings with '=' don't round trip very well, so set the expected
-        # result explicitly.
-        self.assertAnnotationEqual("f'{x=!r}'", expected="f'x={x!r}'")
-        self.assertAnnotationEqual("f'{x=:}'", expected="f'x={x:}'")
-        self.assertAnnotationEqual("f'{x=:.2f}'", expected="f'x={x:.2f}'")
-        self.assertAnnotationEqual("f'{x=!r}'", expected="f'x={x!r}'")
-        self.assertAnnotationEqual("f'{x=!a}'", expected="f'x={x!a}'")
-        self.assertAnnotationEqual("f'{x=!s:*^20}'", expected="f'x={x!s:*^20}'")
-
-    def test_infinity_numbers(self):
-        inf = "1e" + repr(sys.float_info.max_10_exp + 1)
-        infj = f"{inf}j"
-        self.assertAnnotationEqual("1e1000", expected=inf)
-        self.assertAnnotationEqual("1e1000j", expected=infj)
-        self.assertAnnotationEqual("-1e1000", expected=f"-{inf}")
-        self.assertAnnotationEqual("3+1e1000j", expected=f"3 + {infj}")
-        self.assertAnnotationEqual("(1e1000, 1e1000j)", expected=f"({inf}, {infj})")
-        self.assertAnnotationEqual("'inf'")
-        self.assertAnnotationEqual("('inf', 1e1000, 'infxxx', 1e1000j)", expected=f"('inf', {inf}, 'infxxx', {infj})")
-        self.assertAnnotationEqual("(1e1000, (1e1000j,))", expected=f"({inf}, ({infj},))")
-
-    def test_annotation_with_complex_target(self):
-        with self.assertRaises(SyntaxError):
-            exec(
-                "from __future__ import annotations\n"
-                "object.__debug__: int"
-            )
-
-    def test_annotations_symbol_table_pass(self):
-        namespace = self._exec_future(dedent("""
-        from __future__ import annotations
-
-        def foo():
-            outer = 1
-            def bar():
-                inner: outer = 1
-            return bar
-        """))
-
-        foo = namespace.pop("foo")
-        self.assertIsNone(foo().__closure__)
-        self.assertEqual(foo.__code__.co_cellvars, ())
-        self.assertEqual(foo().__code__.co_freevars, ())
-
-    def test_annotations_forbidden(self):
-        with self.assertRaises(SyntaxError):
-            self._exec_future("test: (yield)")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("test.test: (yield a + b)")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("test[something]: (yield from x)")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("def func(test: (yield from outside_of_generator)): pass")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("def test() -> (await y): pass")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("async def test() -> something((a := b)): pass")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("test: await some.complicated[0].call(with_args=True or 1 is not 1)")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future("test: f'{(x := 10):=10}'")
-
-        with self.assertRaises(SyntaxError):
-            self._exec_future(dedent("""\
-            def foo():
-                def bar(arg: (yield)): pass
-            """))
-
-    def test_get_type_hints_on_func_with_variadic_arg(self):
-        # `typing.get_type_hints` might break on a function with a variadic
-        # annotation (e.g. `f(*args: *Ts)`) if `from __future__ import
-        # annotations`, because it could try to evaluate `*Ts` as an expression,
-        # which on its own isn't value syntax.
-        namespace = self._exec_future(dedent("""\
-        class StarredC: pass
-        class C:
-          def __iter__(self):
-            yield StarredC()
-        c = C()
-        def f(*args: *c): pass
-        import typing
-        hints = typing.get_type_hints(f)
-        """))
-
-        hints = namespace.pop('hints')
-        self.assertIsInstance(hints['args'], namespace['StarredC'])
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_future_stmt/__init__.py b/Lib/test/test_future_stmt/__init__.py
new file mode 100644
index 00000000000000..f2a39a3fe29c7f
--- /dev/null
+++ b/Lib/test/test_future_stmt/__init__.py
@@ -0,0 +1,6 @@
+import os
+from test import support
+
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/badsyntax_future10.py b/Lib/test/test_future_stmt/badsyntax_future.py
similarity index 100%
rename from Lib/test/badsyntax_future10.py
rename to Lib/test/test_future_stmt/badsyntax_future.py
diff --git a/Lib/test/future_test1.py b/Lib/test/test_future_stmt/import_nested_scope_twice.py
similarity index 100%
rename from Lib/test/future_test1.py
rename to Lib/test/test_future_stmt/import_nested_scope_twice.py
diff --git a/Lib/test/future_test2.py b/Lib/test/test_future_stmt/nested_scope.py
similarity index 100%
rename from Lib/test/future_test2.py
rename to Lib/test/test_future_stmt/nested_scope.py
diff --git a/Lib/test/test_future_stmt/test_future.py b/Lib/test/test_future_stmt/test_future.py
new file mode 100644
index 00000000000000..2c8ceb664cb362
--- /dev/null
+++ b/Lib/test/test_future_stmt/test_future.py
@@ -0,0 +1,524 @@
+# Test various flavors of legal and illegal future statements
+
+import __future__
+import ast
+import unittest
+from test.support import import_helper
+from test.support.script_helper import spawn_python, kill_python
+from textwrap import dedent
+import os
+import re
+import sys
+
+TOP_LEVEL_MSG = 'from __future__ imports must occur at the beginning of the file'
+
+rx = re.compile(r'\((\S+).py, line (\d+)')
+
+def get_error_location(msg):
+    mo = rx.search(str(msg))
+    return mo.group(1, 2)
+
+class FutureTest(unittest.TestCase):
+
+    def check_syntax_error(self, err, basename,
+                           *,
+                           lineno,
+                           message=TOP_LEVEL_MSG, offset=1):
+        if basename != '<string>':
+            basename += '.py'
+
+        self.assertEqual(f'{message} ({basename}, line {lineno})', str(err))
+        self.assertEqual(os.path.basename(err.filename), basename)
+        self.assertEqual(err.lineno, lineno)
+        self.assertEqual(err.offset, offset)
+
+    def assertSyntaxError(self, code,
+                          *,
+                          lineno=1,
+                          message=TOP_LEVEL_MSG, offset=1,
+                          parametrize_docstring=True):
+        code = dedent(code.lstrip('\n'))
+        for add_docstring in ([False, True] if parametrize_docstring else [False]):
+            with self.subTest(code=code, add_docstring=add_docstring):
+                if add_docstring:
+                    code = '"""Docstring"""\n' + code
+                    lineno += 1
+                with self.assertRaises(SyntaxError) as cm:
+                    exec(code)
+                self.check_syntax_error(cm.exception, "<string>",
+                                        lineno=lineno,
+                                        message=message,
+                                        offset=offset)
+
+    def test_import_nested_scope_twice(self):
+        # Import the name nested_scopes twice to trigger SF bug #407394
+        with import_helper.CleanImport(
+            'test.test_future_stmt.import_nested_scope_twice',
+        ):
+            from test.test_future_stmt import import_nested_scope_twice
+        self.assertEqual(import_nested_scope_twice.result, 6)
+
+    def test_nested_scope(self):
+        with import_helper.CleanImport('test.test_future_stmt.nested_scope'):
+            from test.test_future_stmt import nested_scope
+        self.assertEqual(nested_scope.result, 6)
+
+    def test_future_single_import(self):
+        with import_helper.CleanImport(
+            'test.test_future_stmt.test_future_single_import',
+        ):
+            from test.test_future_stmt import test_future_single_import
+
+    def test_future_multiple_imports(self):
+        with import_helper.CleanImport(
+            'test.test_future_stmt.test_future_multiple_imports',
+        ):
+            from test.test_future_stmt import test_future_multiple_imports
+
+    def test_future_multiple_features(self):
+        with import_helper.CleanImport(
+            "test.test_future_stmt.test_future_multiple_features",
+        ):
+            from test.test_future_stmt import test_future_multiple_features
+
+    def test_unknown_future_flag(self):
+        code = """
+            from __future__ import nested_scopes
+            from __future__ import rested_snopes  # typo error here: nested => rested
+        """
+        self.assertSyntaxError(
+            code, lineno=2,
+            message='future feature rested_snopes is not defined',
+        )
+
+    def test_future_import_not_on_top(self):
+        code = """
+            import some_module
+            from __future__ import annotations
+        """
+        self.assertSyntaxError(code, lineno=2)
+
+        code = """
+            import __future__
+            from __future__ import annotations
+        """
+        self.assertSyntaxError(code, lineno=2)
+
+        code = """
+            from __future__ import absolute_import
+            "spam, bar, blah"
+            from __future__ import print_function
+        """
+        self.assertSyntaxError(code, lineno=3)
+
+    def test_future_import_with_extra_string(self):
+        code = """
+            '''Docstring'''
+            "this isn't a doc string"
+            from __future__ import nested_scopes
+        """
+        self.assertSyntaxError(code, lineno=3, parametrize_docstring=False)
+
+    def test_multiple_import_statements_on_same_line(self):
+        # With `\`:
+        code = """
+            from __future__ import nested_scopes; import string; from __future__ import \
+        nested_scopes
+        """
+        self.assertSyntaxError(code, offset=54)
+
+        # Without `\`:
+        code = """
+            from __future__ import nested_scopes; import string; from __future__ import  nested_scopes
+        """
+        self.assertSyntaxError(code, offset=54)
+
+    def test_future_import_star(self):
+        code = """
+            from __future__ import *
+        """
+        self.assertSyntaxError(code, message='future feature * is not defined')
+
+    def test_future_import_braces(self):
+        code = """
+            from __future__ import braces
+        """
+        # Congrats, you found an easter egg!
+        self.assertSyntaxError(code, message='not a chance')
+
+        code = """
+            from __future__ import nested_scopes, braces
+        """
+        self.assertSyntaxError(code, message='not a chance')
+
+    def test_module_with_future_import_not_on_top(self):
+        with self.assertRaises(SyntaxError) as cm:
+            from test.test_future_stmt import badsyntax_future
+        self.check_syntax_error(cm.exception, "badsyntax_future", lineno=3)
+
+    def test_ensure_flags_dont_clash(self):
+        # bpo-39562: test that future flags and compiler flags doesn't clash
+
+        # obtain future flags (CO_FUTURE_***) from the __future__ module
+        flags = {
+            f"CO_FUTURE_{future.upper()}": getattr(__future__, future).compiler_flag
+            for future in __future__.all_feature_names
+        }
+        # obtain some of the exported compiler flags (PyCF_***) from the ast module
+        flags |= {
+            flag: getattr(ast, flag)
+            for flag in dir(ast) if flag.startswith("PyCF_")
+        }
+        self.assertCountEqual(set(flags.values()), flags.values())
+
+    def test_parserhack(self):
+        # test that the parser.c::future_hack function works as expected
+        # Note: although this test must pass, it's not testing the original
+        #       bug as of 2.6 since the with statement is not optional and
+        #       the parser hack disabled. If a new keyword is introduced in
+        #       2.6, change this to refer to the new future import.
+        try:
+            exec("from __future__ import print_function; print 0")
+        except SyntaxError:
+            pass
+        else:
+            self.fail("syntax error didn't occur")
+
+        try:
+            exec("from __future__ import (print_function); print 0")
+        except SyntaxError:
+            pass
+        else:
+            self.fail("syntax error didn't occur")
+
+    def test_unicode_literals_exec(self):
+        scope = {}
+        exec("from __future__ import unicode_literals; x = ''", {}, scope)
+        self.assertIsInstance(scope["x"], str)
+
+    def test_syntactical_future_repl(self):
+        p = spawn_python('-i')
+        p.stdin.write(b"from __future__ import barry_as_FLUFL\n")
+        p.stdin.write(b"2 <> 3\n")
+        out = kill_python(p)
+        self.assertNotIn(b'SyntaxError: invalid syntax', out)
+
+class AnnotationsFutureTestCase(unittest.TestCase):
+    template = dedent(
+        """
+        from __future__ import annotations
+        def f() -> {ann}:
+            ...
+        def g(arg: {ann}) -> None:
+            ...
+        async def f2() -> {ann}:
+            ...
+        async def g2(arg: {ann}) -> None:
+            ...
+        class H:
+            var: {ann}
+            object.attr: {ann}
+        var: {ann}
+        var2: {ann} = None
+        object.attr: {ann}
+        """
+    )
+
+    def getActual(self, annotation):
+        scope = {}
+        exec(self.template.format(ann=annotation), {}, scope)
+        func_ret_ann = scope['f'].__annotations__['return']
+        func_arg_ann = scope['g'].__annotations__['arg']
+        async_func_ret_ann = scope['f2'].__annotations__['return']
+        async_func_arg_ann = scope['g2'].__annotations__['arg']
+        var_ann1 = scope['__annotations__']['var']
+        var_ann2 = scope['__annotations__']['var2']
+        self.assertEqual(func_ret_ann, func_arg_ann)
+        self.assertEqual(func_ret_ann, async_func_ret_ann)
+        self.assertEqual(func_ret_ann, async_func_arg_ann)
+        self.assertEqual(func_ret_ann, var_ann1)
+        self.assertEqual(func_ret_ann, var_ann2)
+        return func_ret_ann
+
+    def assertAnnotationEqual(
+        self, annotation, expected=None, drop_parens=False, is_tuple=False,
+    ):
+        actual = self.getActual(annotation)
+        if expected is None:
+            expected = annotation if not is_tuple else annotation[1:-1]
+        if drop_parens:
+            self.assertNotEqual(actual, expected)
+            actual = actual.replace("(", "").replace(")", "")
+
+        self.assertEqual(actual, expected)
+
+    def _exec_future(self, code):
+        scope = {}
+        exec(
+            "from __future__ import annotations\n"
+            + code, scope
+        )
+        return scope
+
+    def test_annotations(self):
+        eq = self.assertAnnotationEqual
+        eq('...')
+        eq("'some_string'")
+        eq("u'some_string'")
+        eq("b'\\xa3'")
+        eq('Name')
+        eq('None')
+        eq('True')
+        eq('False')
+        eq('1')
+        eq('1.0')
+        eq('1j')
+        eq('True or False')
+        eq('True or False or None')
+        eq('True and False')
+        eq('True and False and None')
+        eq('Name1 and Name2 or Name3')
+        eq('Name1 and (Name2 or Name3)')
+        eq('Name1 or Name2 and Name3')
+        eq('(Name1 or Name2) and Name3')
+        eq('Name1 and Name2 or Name3 and Name4')
+        eq('Name1 or Name2 and Name3 or Name4')
+        eq('a + b + (c + d)')
+        eq('a * b * (c * d)')
+        eq('(a ** b) ** c ** d')
+        eq('v1 << 2')
+        eq('1 >> v2')
+        eq('1 % finished')
+        eq('1 + v2 - v3 * 4 ^ 5 ** v6 / 7 // 8')
+        eq('not great')
+        eq('not not great')
+        eq('~great')
+        eq('+value')
+        eq('++value')
+        eq('-1')
+        eq('~int and not v1 ^ 123 + v2 | True')
+        eq('a + (not b)')
+        eq('lambda: None')
+        eq('lambda arg: None')
+        eq('lambda a=True: a')
+        eq('lambda a, b, c=True: a')
+        eq("lambda a, b, c=True, *, d=1 << v2, e='str': a")
+        eq("lambda a, b, c=True, *vararg, d, e='str', **kwargs: a + b")
+        eq("lambda a, /, b, c=True, *vararg, d, e='str', **kwargs: a + b")
+        eq('lambda x, /: x')
+        eq('lambda x=1, /: x')
+        eq('lambda x, /, y: x + y')
+        eq('lambda x=1, /, y=2: x + y')
+        eq('lambda x, /, y=1: x + y')
+        eq('lambda x, /, y=1, *, z=3: x + y + z')
+        eq('lambda x=1, /, y=2, *, z=3: x + y + z')
+        eq('lambda x=1, /, y=2, *, z: x + y + z')
+        eq('lambda x=1, y=2, z=3, /, w=4, *, l, l2: x + y + z + w + l + l2')
+        eq('lambda x=1, y=2, z=3, /, w=4, *, l, l2, **kwargs: x + y + z + w + l + l2')
+        eq('lambda x, /, y=1, *, z: x + y + z')
+        eq('lambda x: lambda y: x + y')
+        eq('1 if True else 2')
+        eq('str or None if int or True else str or bytes or None')
+        eq('str or None if (1 if True else 2) else str or bytes or None')
+        eq("0 if not x else 1 if x > 0 else -1")
+        eq("(1 if x > 0 else -1) if x else 0")
+        eq("{'2.7': dead, '3.7': long_live or die_hard}")
+        eq("{'2.7': dead, '3.7': long_live or die_hard, **{'3.6': verygood}}")
+        eq("{**a, **b, **c}")
+        eq("{'2.7', '3.6', '3.7', '3.8', '3.9', '4.0' if gilectomy else '3.10'}")
+        eq("{*a, *b, *c}")
+        eq("({'a': 'b'}, True or False, +value, 'string', b'bytes') or None")
+        eq("()")
+        eq("(a,)")
+        eq("(a, b)")
+        eq("(a, b, c)")
+        eq("(*a, *b, *c)")
+        eq("[]")
+        eq("[1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or A, 11 or B, 12 or C]")
+        eq("[*a, *b, *c]")
+        eq("{i for i in (1, 2, 3)}")
+        eq("{i ** 2 for i in (1, 2, 3)}")
+        eq("{i ** 2 for i, _ in ((1, 'a'), (2, 'b'), (3, 'c'))}")
+        eq("{i ** 2 + j for i in (1, 2, 3) for j in (1, 2, 3)}")
+        eq("[i for i in (1, 2, 3)]")
+        eq("[i ** 2 for i in (1, 2, 3)]")
+        eq("[i ** 2 for i, _ in ((1, 'a'), (2, 'b'), (3, 'c'))]")
+        eq("[i ** 2 + j for i in (1, 2, 3) for j in (1, 2, 3)]")
+        eq("(i for i in (1, 2, 3))")
+        eq("(i ** 2 for i in (1, 2, 3))")
+        eq("(i ** 2 for i, _ in ((1, 'a'), (2, 'b'), (3, 'c')))")
+        eq("(i ** 2 + j for i in (1, 2, 3) for j in (1, 2, 3))")
+        eq("{i: 0 for i in (1, 2, 3)}")
+        eq("{i: j for i, j in ((1, 'a'), (2, 'b'), (3, 'c'))}")
+        eq("[(x, y) for x, y in (a, b)]")
+        eq("[(x,) for x, in (a,)]")
+        eq("Python3 > Python2 > COBOL")
+        eq("Life is Life")
+        eq("call()")
+        eq("call(arg)")
+        eq("call(kwarg='hey')")
+        eq("call(arg, kwarg='hey')")
+        eq("call(arg, *args, another, kwarg='hey')")
+        eq("call(arg, another, kwarg='hey', **kwargs, kwarg2='ho')")
+        eq("lukasz.langa.pl")
+        eq("call.me(maybe)")
+        eq("1 .real")
+        eq("1.0.real")
+        eq("....__class__")
+        eq("list[str]")
+        eq("dict[str, int]")
+        eq("set[str,]")
+        eq("tuple[()]")
+        eq("tuple[str, ...]")
+        eq("tuple[str, *types]")
+        eq("tuple[str, int, (str, int)]")
+        eq("tuple[*int, str, str, (str, int)]")
+        eq("tuple[str, int, float, dict[str, int]]")
+        eq("slice[0]")
+        eq("slice[0:1]")
+        eq("slice[0:1:2]")
+        eq("slice[:]")
+        eq("slice[:-1]")
+        eq("slice[1:]")
+        eq("slice[::-1]")
+        eq("slice[:,]")
+        eq("slice[1:2,]")
+        eq("slice[1:2:3,]")
+        eq("slice[1:2, 1]")
+        eq("slice[1:2, 2, 3]")
+        eq("slice[()]")
+        # Note that `slice[*Ts]`, `slice[*Ts,]`, and `slice[(*Ts,)]` all have
+        # the same AST, but only `slice[*Ts,]` passes this test, because that's
+        # what the unparser produces.
+        eq("slice[*Ts,]")
+        eq("slice[1, *Ts]")
+        eq("slice[*Ts, 2]")
+        eq("slice[1, *Ts, 2]")
+        eq("slice[*Ts, *Ts]")
+        eq("slice[1, *Ts, *Ts]")
+        eq("slice[*Ts, 1, *Ts]")
+        eq("slice[*Ts, *Ts, 1]")
+        eq("slice[1, *Ts, *Ts, 2]")
+        eq("slice[1:2, *Ts]")
+        eq("slice[*Ts, 1:2]")
+        eq("slice[1:2, *Ts, 3:4]")
+        eq("slice[a, b:c, d:e:f]")
+        eq("slice[(x for x in a)]")
+        eq('str or None if sys.version_info[0] > (3,) else str or bytes or None')
+        eq("f'f-string without formatted values is just a string'")
+        eq("f'{{NOT a formatted value}}'")
+        eq("f'some f-string with {a} {few():.2f} {formatted.values!r}'")
+        eq('''f"{f'{nested} inner'} outer"''')
+        eq("f'space between opening braces: { {a for a in (1, 2, 3)}}'")
+        eq("f'{(lambda x: x)}'")
+        eq("f'{(None if a else lambda x: x)}'")
+        eq("f'{x}'")
+        eq("f'{x!r}'")
+        eq("f'{x!a}'")
+        eq('[x for x in (a if b else c)]')
+        eq('[x for x in a if (b if c else d)]')
+        eq('f(x for x in a)')
+        eq('f(1, (x for x in a))')
+        eq('f((x for x in a), 2)')
+        eq('(((a)))', 'a')
+        eq('(((a, b)))', '(a, b)')
+        eq("1 + 2 + 3")
+
+    def test_fstring_debug_annotations(self):
+        # f-strings with '=' don't round trip very well, so set the expected
+        # result explicitly.
+        self.assertAnnotationEqual("f'{x=!r}'", expected="f'x={x!r}'")
+        self.assertAnnotationEqual("f'{x=:}'", expected="f'x={x:}'")
+        self.assertAnnotationEqual("f'{x=:.2f}'", expected="f'x={x:.2f}'")
+        self.assertAnnotationEqual("f'{x=!r}'", expected="f'x={x!r}'")
+        self.assertAnnotationEqual("f'{x=!a}'", expected="f'x={x!a}'")
+        self.assertAnnotationEqual("f'{x=!s:*^20}'", expected="f'x={x!s:*^20}'")
+
+    def test_infinity_numbers(self):
+        inf = "1e" + repr(sys.float_info.max_10_exp + 1)
+        infj = f"{inf}j"
+        self.assertAnnotationEqual("1e1000", expected=inf)
+        self.assertAnnotationEqual("1e1000j", expected=infj)
+        self.assertAnnotationEqual("-1e1000", expected=f"-{inf}")
+        self.assertAnnotationEqual("3+1e1000j", expected=f"3 + {infj}")
+        self.assertAnnotationEqual("(1e1000, 1e1000j)", expected=f"({inf}, {infj})")
+        self.assertAnnotationEqual("'inf'")
+        self.assertAnnotationEqual("('inf', 1e1000, 'infxxx', 1e1000j)", expected=f"('inf', {inf}, 'infxxx', {infj})")
+        self.assertAnnotationEqual("(1e1000, (1e1000j,))", expected=f"({inf}, ({infj},))")
+
+    def test_annotation_with_complex_target(self):
+        with self.assertRaises(SyntaxError):
+            exec(
+                "from __future__ import annotations\n"
+                "object.__debug__: int"
+            )
+
+    def test_annotations_symbol_table_pass(self):
+        namespace = self._exec_future(dedent("""
+        from __future__ import annotations
+
+        def foo():
+            outer = 1
+            def bar():
+                inner: outer = 1
+            return bar
+        """))
+
+        foo = namespace.pop("foo")
+        self.assertIsNone(foo().__closure__)
+        self.assertEqual(foo.__code__.co_cellvars, ())
+        self.assertEqual(foo().__code__.co_freevars, ())
+
+    def test_annotations_forbidden(self):
+        with self.assertRaises(SyntaxError):
+            self._exec_future("test: (yield)")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("test.test: (yield a + b)")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("test[something]: (yield from x)")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("def func(test: (yield from outside_of_generator)): pass")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("def test() -> (await y): pass")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("async def test() -> something((a := b)): pass")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("test: await some.complicated[0].call(with_args=True or 1 is not 1)")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future("test: f'{(x := 10):=10}'")
+
+        with self.assertRaises(SyntaxError):
+            self._exec_future(dedent("""\
+            def foo():
+                def bar(arg: (yield)): pass
+            """))
+
+    def test_get_type_hints_on_func_with_variadic_arg(self):
+        # `typing.get_type_hints` might break on a function with a variadic
+        # annotation (e.g. `f(*args: *Ts)`) if `from __future__ import
+        # annotations`, because it could try to evaluate `*Ts` as an expression,
+        # which on its own isn't value syntax.
+        namespace = self._exec_future(dedent("""\
+        class StarredC: pass
+        class C:
+          def __iter__(self):
+            yield StarredC()
+        c = C()
+        def f(*args: *c): pass
+        import typing
+        hints = typing.get_type_hints(f)
+        """))
+
+        hints = namespace.pop('hints')
+        self.assertIsInstance(hints['args'], namespace['StarredC'])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test___future__.py b/Lib/test/test_future_stmt/test_future_flags.py
similarity index 100%
rename from Lib/test/test___future__.py
rename to Lib/test/test_future_stmt/test_future_flags.py
diff --git a/Lib/test/test_future5.py b/Lib/test/test_future_stmt/test_future_multiple_features.py
similarity index 100%
rename from Lib/test/test_future5.py
rename to Lib/test/test_future_stmt/test_future_multiple_features.py
diff --git a/Lib/test/test_future4.py b/Lib/test/test_future_stmt/test_future_multiple_imports.py
similarity index 100%
rename from Lib/test/test_future4.py
rename to Lib/test/test_future_stmt/test_future_multiple_imports.py
diff --git a/Lib/test/test_future3.py b/Lib/test/test_future_stmt/test_future_single_import.py
similarity index 100%
rename from Lib/test/test_future3.py
rename to Lib/test/test_future_stmt/test_future_single_import.py
diff --git a/Lib/test/test_gdb.py b/Lib/test/test_gdb.py
deleted file mode 100644
index 311a864a52387d..00000000000000
--- a/Lib/test/test_gdb.py
+++ /dev/null
@@ -1,1052 +0,0 @@
-# Verify that gdb can pretty-print the various PyObject* types
-#
-# The code for testing gdb was adapted from similar work in Unladen Swallow's
-# Lib/test/test_jit_gdb.py
-
-import os
-import platform
-import re
-import subprocess
-import sys
-import sysconfig
-import textwrap
-import unittest
-
-from test import support
-from test.support import findfile, python_is_optimized
-
-def get_gdb_version():
-    try:
-        cmd = ["gdb", "-nx", "--version"]
-        proc = subprocess.Popen(cmd,
-                                stdout=subprocess.PIPE,
-                                stderr=subprocess.PIPE,
-                                universal_newlines=True)
-        with proc:
-            version, stderr = proc.communicate()
-
-        if proc.returncode:
-            raise Exception(f"Command {' '.join(cmd)!r} failed "
-                            f"with exit code {proc.returncode}: "
-                            f"stdout={version!r} stderr={stderr!r}")
-    except OSError:
-        # This is what "no gdb" looks like.  There may, however, be other
-        # errors that manifest this way too.
-        raise unittest.SkipTest("Couldn't find gdb on the path")
-
-    # Regex to parse:
-    # 'GNU gdb (GDB; SUSE Linux Enterprise 12) 7.7\n' -> 7.7
-    # 'GNU gdb (GDB) Fedora 7.9.1-17.fc22\n' -> 7.9
-    # 'GNU gdb 6.1.1 [FreeBSD]\n' -> 6.1
-    # 'GNU gdb (GDB) Fedora (7.5.1-37.fc18)\n' -> 7.5
-    # 'HP gdb 6.7 for HP Itanium (32 or 64 bit) and target HP-UX 11iv2 and 11iv3.\n' -> 6.7
-    match = re.search(r"^(?:GNU|HP) gdb.*?\b(\d+)\.(\d+)", version)
-    if match is None:
-        raise Exception("unable to parse GDB version: %r" % version)
-    return (version, int(match.group(1)), int(match.group(2)))
-
-gdb_version, gdb_major_version, gdb_minor_version = get_gdb_version()
-if gdb_major_version < 7:
-    raise unittest.SkipTest("gdb versions before 7.0 didn't support python "
-                            "embedding. Saw %s.%s:\n%s"
-                            % (gdb_major_version, gdb_minor_version,
-                               gdb_version))
-
-if not sysconfig.is_python_build():
-    raise unittest.SkipTest("test_gdb only works on source builds at the moment.")
-
-if 'Clang' in platform.python_compiler() and sys.platform == 'darwin':
-    raise unittest.SkipTest("test_gdb doesn't work correctly when python is"
-                            " built with LLVM clang")
-
-if ((sysconfig.get_config_var('PGO_PROF_USE_FLAG') or 'xxx') in
-    (sysconfig.get_config_var('PY_CORE_CFLAGS') or '')):
-    raise unittest.SkipTest("test_gdb is not reliable on PGO builds")
-
-# Location of custom hooks file in a repository checkout.
-checkout_hook_path = os.path.join(os.path.dirname(sys.executable),
-                                  'python-gdb.py')
-
-PYTHONHASHSEED = '123'
-
-
-def cet_protection():
-    cflags = sysconfig.get_config_var('CFLAGS')
-    if not cflags:
-        return False
-    flags = cflags.split()
-    # True if "-mcet -fcf-protection" options are found, but false
-    # if "-fcf-protection=none" or "-fcf-protection=return" is found.
-    return (('-mcet' in flags)
-            and any((flag.startswith('-fcf-protection')
-                     and not flag.endswith(("=none", "=return")))
-                    for flag in flags))
-
-# Control-flow enforcement technology
-CET_PROTECTION = cet_protection()
-
-
-def run_gdb(*args, **env_vars):
-    """Runs gdb in --batch mode with the additional arguments given by *args.
-
-    Returns its (stdout, stderr) decoded from utf-8 using the replace handler.
-    """
-    if env_vars:
-        env = os.environ.copy()
-        env.update(env_vars)
-    else:
-        env = None
-    # -nx: Do not execute commands from any .gdbinit initialization files
-    #      (issue #22188)
-    base_cmd = ('gdb', '--batch', '-nx')
-    if (gdb_major_version, gdb_minor_version) >= (7, 4):
-        base_cmd += ('-iex', 'add-auto-load-safe-path ' + checkout_hook_path)
-    proc = subprocess.Popen(base_cmd + args,
-                            # Redirect stdin to prevent GDB from messing with
-                            # the terminal settings
-                            stdin=subprocess.PIPE,
-                            stdout=subprocess.PIPE,
-                            stderr=subprocess.PIPE,
-                            env=env)
-    with proc:
-        out, err = proc.communicate()
-    return out.decode('utf-8', 'replace'), err.decode('utf-8', 'replace')
-
-# Verify that "gdb" was built with the embedded python support enabled:
-gdbpy_version, _ = run_gdb("--eval-command=python import sys; print(sys.version_info)")
-if not gdbpy_version:
-    raise unittest.SkipTest("gdb not built with embedded python support")
-
-if "major=2" in gdbpy_version:
-    raise unittest.SkipTest("gdb built with Python 2")
-
-# Verify that "gdb" can load our custom hooks, as OS security settings may
-# disallow this without a customized .gdbinit.
-_, gdbpy_errors = run_gdb('--args', sys.executable)
-if "auto-loading has been declined" in gdbpy_errors:
-    msg = "gdb security settings prevent use of custom hooks: "
-    raise unittest.SkipTest(msg + gdbpy_errors.rstrip())
-
-def gdb_has_frame_select():
-    # Does this build of gdb have gdb.Frame.select ?
-    stdout, _ = run_gdb("--eval-command=python print(dir(gdb.Frame))")
-    m = re.match(r'.*\[(.*)\].*', stdout)
-    if not m:
-        raise unittest.SkipTest("Unable to parse output from gdb.Frame.select test")
-    gdb_frame_dir = m.group(1).split(', ')
-    return "'select'" in gdb_frame_dir
-
-HAS_PYUP_PYDOWN = gdb_has_frame_select()
-
-BREAKPOINT_FN='builtin_id'
-
-@unittest.skipIf(support.PGO, "not useful for PGO")
-class DebuggerTests(unittest.TestCase):
-
-    """Test that the debugger can debug Python."""
-
-    def get_stack_trace(self, source=None, script=None,
-                        breakpoint=BREAKPOINT_FN,
-                        cmds_after_breakpoint=None,
-                        import_site=False,
-                        ignore_stderr=False):
-        '''
-        Run 'python -c SOURCE' under gdb with a breakpoint.
-
-        Support injecting commands after the breakpoint is reached
-
-        Returns the stdout from gdb
-
-        cmds_after_breakpoint: if provided, a list of strings: gdb commands
-        '''
-        # We use "set breakpoint pending yes" to avoid blocking with a:
-        #   Function "foo" not defined.
-        #   Make breakpoint pending on future shared library load? (y or [n])
-        # error, which typically happens python is dynamically linked (the
-        # breakpoints of interest are to be found in the shared library)
-        # When this happens, we still get:
-        #   Function "textiowrapper_write" not defined.
-        # emitted to stderr each time, alas.
-
-        # Initially I had "--eval-command=continue" here, but removed it to
-        # avoid repeated print breakpoints when traversing hierarchical data
-        # structures
-
-        # Generate a list of commands in gdb's language:
-        commands = ['set breakpoint pending yes',
-                    'break %s' % breakpoint,
-
-                    # The tests assume that the first frame of printed
-                    #  backtrace will not contain program counter,
-                    #  that is however not guaranteed by gdb
-                    #  therefore we need to use 'set print address off' to
-                    #  make sure the counter is not there. For example:
-                    # #0 in PyObject_Print ...
-                    #  is assumed, but sometimes this can be e.g.
-                    # #0 0x00003fffb7dd1798 in PyObject_Print ...
-                    'set print address off',
-
-                    'run']
-
-        # GDB as of 7.4 onwards can distinguish between the
-        # value of a variable at entry vs current value:
-        #   http://sourceware.org/gdb/onlinedocs/gdb/Variables.html
-        # which leads to the selftests failing with errors like this:
-        #   AssertionError: 'v@entry=()' != '()'
-        # Disable this:
-        if (gdb_major_version, gdb_minor_version) >= (7, 4):
-            commands += ['set print entry-values no']
-
-        if cmds_after_breakpoint:
-            if CET_PROTECTION:
-                # bpo-32962: When Python is compiled with -mcet
-                # -fcf-protection, function arguments are unusable before
-                # running the first instruction of the function entry point.
-                # The 'next' command makes the required first step.
-                commands += ['next']
-            commands += cmds_after_breakpoint
-        else:
-            commands += ['backtrace']
-
-        # print commands
-
-        # Use "commands" to generate the arguments with which to invoke "gdb":
-        args = ['--eval-command=%s' % cmd for cmd in commands]
-        args += ["--args",
-                 sys.executable]
-        args.extend(subprocess._args_from_interpreter_flags())
-
-        if not import_site:
-            # -S suppresses the default 'import site'
-            args += ["-S"]
-
-        if source:
-            args += ["-c", source]
-        elif script:
-            args += [script]
-
-        # Use "args" to invoke gdb, capturing stdout, stderr:
-        out, err = run_gdb(*args, PYTHONHASHSEED=PYTHONHASHSEED)
-
-        if not ignore_stderr:
-            for line in err.splitlines():
-                print(line, file=sys.stderr)
-
-        # bpo-34007: Sometimes some versions of the shared libraries that
-        # are part of the traceback are compiled in optimised mode and the
-        # Program Counter (PC) is not present, not allowing gdb to walk the
-        # frames back. When this happens, the Python bindings of gdb raise
-        # an exception, making the test impossible to succeed.
-        if "PC not saved" in err:
-            raise unittest.SkipTest("gdb cannot walk the frame object"
-                                    " because the Program Counter is"
-                                    " not present")
-
-        # bpo-40019: Skip the test if gdb failed to read debug information
-        # because the Python binary is optimized.
-        for pattern in (
-            '(frame information optimized out)',
-            'Unable to read information on python frame',
-        ):
-            if pattern in out:
-                raise unittest.SkipTest(f"{pattern!r} found in gdb output")
-
-        return out
-
-    def get_gdb_repr(self, source,
-                     cmds_after_breakpoint=None,
-                     import_site=False):
-        # Given an input python source representation of data,
-        # run "python -c'id(DATA)'" under gdb with a breakpoint on
-        # builtin_id and scrape out gdb's representation of the "op"
-        # parameter, and verify that the gdb displays the same string
-        #
-        # Verify that the gdb displays the expected string
-        #
-        # For a nested structure, the first time we hit the breakpoint will
-        # give us the top-level structure
-
-        # NOTE: avoid decoding too much of the traceback as some
-        # undecodable characters may lurk there in optimized mode
-        # (issue #19743).
-        cmds_after_breakpoint = cmds_after_breakpoint or ["backtrace 1"]
-        gdb_output = self.get_stack_trace(source, breakpoint=BREAKPOINT_FN,
-                                          cmds_after_breakpoint=cmds_after_breakpoint,
-                                          import_site=import_site)
-        # gdb can insert additional '\n' and space characters in various places
-        # in its output, depending on the width of the terminal it's connected
-        # to (using its "wrap_here" function)
-        m = re.search(
-            # Match '#0 builtin_id(self=..., v=...)'
-            r'#0\s+builtin_id\s+\(self\=.*,\s+v=\s*(.*?)?\)'
-            # Match ' at Python/bltinmodule.c'.
-            # bpo-38239: builtin_id() is defined in Python/bltinmodule.c,
-            # but accept any "Directory\file.c" to support Link Time
-            # Optimization (LTO).
-            r'\s+at\s+\S*[A-Za-z]+/[A-Za-z0-9_-]+\.c',
-            gdb_output, re.DOTALL)
-        if not m:
-            self.fail('Unexpected gdb output: %r\n%s' % (gdb_output, gdb_output))
-        return m.group(1), gdb_output
-
-    def assertEndsWith(self, actual, exp_end):
-        '''Ensure that the given "actual" string ends with "exp_end"'''
-        self.assertTrue(actual.endswith(exp_end),
-                        msg='%r did not end with %r' % (actual, exp_end))
-
-    def assertMultilineMatches(self, actual, pattern):
-        m = re.match(pattern, actual, re.DOTALL)
-        if not m:
-            self.fail(msg='%r did not match %r' % (actual, pattern))
-
-    def get_sample_script(self):
-        return findfile('gdb_sample.py')
-
-class PrettyPrintTests(DebuggerTests):
-    def test_getting_backtrace(self):
-        gdb_output = self.get_stack_trace('id(42)')
-        self.assertTrue(BREAKPOINT_FN in gdb_output)
-
-    def assertGdbRepr(self, val, exp_repr=None):
-        # Ensure that gdb's rendering of the value in a debugged process
-        # matches repr(value) in this process:
-        gdb_repr, gdb_output = self.get_gdb_repr('id(' + ascii(val) + ')')
-        if not exp_repr:
-            exp_repr = repr(val)
-        self.assertEqual(gdb_repr, exp_repr,
-                         ('%r did not equal expected %r; full output was:\n%s'
-                          % (gdb_repr, exp_repr, gdb_output)))
-
-    def test_int(self):
-        'Verify the pretty-printing of various int values'
-        self.assertGdbRepr(42)
-        self.assertGdbRepr(0)
-        self.assertGdbRepr(-7)
-        self.assertGdbRepr(1000000000000)
-        self.assertGdbRepr(-1000000000000000)
-
-    def test_singletons(self):
-        'Verify the pretty-printing of True, False and None'
-        self.assertGdbRepr(True)
-        self.assertGdbRepr(False)
-        self.assertGdbRepr(None)
-
-    def test_dicts(self):
-        'Verify the pretty-printing of dictionaries'
-        self.assertGdbRepr({})
-        self.assertGdbRepr({'foo': 'bar'}, "{'foo': 'bar'}")
-        # Python preserves insertion order since 3.6
-        self.assertGdbRepr({'foo': 'bar', 'douglas': 42}, "{'foo': 'bar', 'douglas': 42}")
-
-    def test_lists(self):
-        'Verify the pretty-printing of lists'
-        self.assertGdbRepr([])
-        self.assertGdbRepr(list(range(5)))
-
-    def test_bytes(self):
-        'Verify the pretty-printing of bytes'
-        self.assertGdbRepr(b'')
-        self.assertGdbRepr(b'And now for something hopefully the same')
-        self.assertGdbRepr(b'string with embedded NUL here \0 and then some more text')
-        self.assertGdbRepr(b'this is a tab:\t'
-                           b' this is a slash-N:\n'
-                           b' this is a slash-R:\r'
-                           )
-
-        self.assertGdbRepr(b'this is byte 255:\xff and byte 128:\x80')
-
-        self.assertGdbRepr(bytes([b for b in range(255)]))
-
-    def test_strings(self):
-        'Verify the pretty-printing of unicode strings'
-        # We cannot simply call locale.getpreferredencoding() here,
-        # as GDB might have been linked against a different version
-        # of Python with a different encoding and coercion policy
-        # with respect to PEP 538 and PEP 540.
-        out, err = run_gdb(
-            '--eval-command',
-            'python import locale; print(locale.getpreferredencoding())')
-
-        encoding = out.rstrip()
-        if err or not encoding:
-            raise RuntimeError(
-                f'unable to determine the preferred encoding '
-                f'of embedded Python in GDB: {err}')
-
-        def check_repr(text):
-            try:
-                text.encode(encoding)
-            except UnicodeEncodeError:
-                self.assertGdbRepr(text, ascii(text))
-            else:
-                self.assertGdbRepr(text)
-
-        self.assertGdbRepr('')
-        self.assertGdbRepr('And now for something hopefully the same')
-        self.assertGdbRepr('string with embedded NUL here \0 and then some more text')
-
-        # Test printing a single character:
-        #    U+2620 SKULL AND CROSSBONES
-        check_repr('\u2620')
-
-        # Test printing a Japanese unicode string
-        # (I believe this reads "mojibake", using 3 characters from the CJK
-        # Unified Ideographs area, followed by U+3051 HIRAGANA LETTER KE)
-        check_repr('\u6587\u5b57\u5316\u3051')
-
-        # Test a character outside the BMP:
-        #    U+1D121 MUSICAL SYMBOL C CLEF
-        # This is:
-        # UTF-8: 0xF0 0x9D 0x84 0xA1
-        # UTF-16: 0xD834 0xDD21
-        check_repr(chr(0x1D121))
-
-    def test_tuples(self):
-        'Verify the pretty-printing of tuples'
-        self.assertGdbRepr(tuple(), '()')
-        self.assertGdbRepr((1,), '(1,)')
-        self.assertGdbRepr(('foo', 'bar', 'baz'))
-
-    def test_sets(self):
-        'Verify the pretty-printing of sets'
-        if (gdb_major_version, gdb_minor_version) < (7, 3):
-            self.skipTest("pretty-printing of sets needs gdb 7.3 or later")
-        self.assertGdbRepr(set(), "set()")
-        self.assertGdbRepr(set(['a']), "{'a'}")
-        # PYTHONHASHSEED is need to get the exact frozenset item order
-        if not sys.flags.ignore_environment:
-            self.assertGdbRepr(set(['a', 'b']), "{'a', 'b'}")
-            self.assertGdbRepr(set([4, 5, 6]), "{4, 5, 6}")
-
-        # Ensure that we handle sets containing the "dummy" key value,
-        # which happens on deletion:
-        gdb_repr, gdb_output = self.get_gdb_repr('''s = set(['a','b'])
-s.remove('a')
-id(s)''')
-        self.assertEqual(gdb_repr, "{'b'}")
-
-    def test_frozensets(self):
-        'Verify the pretty-printing of frozensets'
-        if (gdb_major_version, gdb_minor_version) < (7, 3):
-            self.skipTest("pretty-printing of frozensets needs gdb 7.3 or later")
-        self.assertGdbRepr(frozenset(), "frozenset()")
-        self.assertGdbRepr(frozenset(['a']), "frozenset({'a'})")
-        # PYTHONHASHSEED is need to get the exact frozenset item order
-        if not sys.flags.ignore_environment:
-            self.assertGdbRepr(frozenset(['a', 'b']), "frozenset({'a', 'b'})")
-            self.assertGdbRepr(frozenset([4, 5, 6]), "frozenset({4, 5, 6})")
-
-    def test_exceptions(self):
-        # Test a RuntimeError
-        gdb_repr, gdb_output = self.get_gdb_repr('''
-try:
-    raise RuntimeError("I am an error")
-except RuntimeError as e:
-    id(e)
-''')
-        self.assertEqual(gdb_repr,
-                         "RuntimeError('I am an error',)")
-
-
-        # Test division by zero:
-        gdb_repr, gdb_output = self.get_gdb_repr('''
-try:
-    a = 1 / 0
-except ZeroDivisionError as e:
-    id(e)
-''')
-        self.assertEqual(gdb_repr,
-                         "ZeroDivisionError('division by zero',)")
-
-    def test_modern_class(self):
-        'Verify the pretty-printing of new-style class instances'
-        gdb_repr, gdb_output = self.get_gdb_repr('''
-class Foo:
-    pass
-foo = Foo()
-foo.an_int = 42
-id(foo)''')
-        m = re.match(r'<Foo\(an_int=42\) at remote 0x-?[0-9a-f]+>', gdb_repr)
-        self.assertTrue(m,
-                        msg='Unexpected new-style class rendering %r' % gdb_repr)
-
-    def test_subclassing_list(self):
-        'Verify the pretty-printing of an instance of a list subclass'
-        gdb_repr, gdb_output = self.get_gdb_repr('''
-class Foo(list):
-    pass
-foo = Foo()
-foo += [1, 2, 3]
-foo.an_int = 42
-id(foo)''')
-        m = re.match(r'<Foo\(an_int=42\) at remote 0x-?[0-9a-f]+>', gdb_repr)
-
-        self.assertTrue(m,
-                        msg='Unexpected new-style class rendering %r' % gdb_repr)
-
-    def test_subclassing_tuple(self):
-        'Verify the pretty-printing of an instance of a tuple subclass'
-        # This should exercise the negative tp_dictoffset code in the
-        # new-style class support
-        gdb_repr, gdb_output = self.get_gdb_repr('''
-class Foo(tuple):
-    pass
-foo = Foo((1, 2, 3))
-foo.an_int = 42
-id(foo)''')
-        m = re.match(r'<Foo\(an_int=42\) at remote 0x-?[0-9a-f]+>', gdb_repr)
-
-        self.assertTrue(m,
-                        msg='Unexpected new-style class rendering %r' % gdb_repr)
-
-    def assertSane(self, source, corruption, exprepr=None):
-        '''Run Python under gdb, corrupting variables in the inferior process
-        immediately before taking a backtrace.
-
-        Verify that the variable's representation is the expected failsafe
-        representation'''
-        if corruption:
-            cmds_after_breakpoint=[corruption, 'backtrace']
-        else:
-            cmds_after_breakpoint=['backtrace']
-
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr(source,
-                              cmds_after_breakpoint=cmds_after_breakpoint)
-        if exprepr:
-            if gdb_repr == exprepr:
-                # gdb managed to print the value in spite of the corruption;
-                # this is good (see http://bugs.python.org/issue8330)
-                return
-
-        # Match anything for the type name; 0xDEADBEEF could point to
-        # something arbitrary (see  http://bugs.python.org/issue8330)
-        pattern = '<.* at remote 0x-?[0-9a-f]+>'
-
-        m = re.match(pattern, gdb_repr)
-        if not m:
-            self.fail('Unexpected gdb representation: %r\n%s' % \
-                          (gdb_repr, gdb_output))
-
-    def test_NULL_ptr(self):
-        'Ensure that a NULL PyObject* is handled gracefully'
-        gdb_repr, gdb_output = (
-            self.get_gdb_repr('id(42)',
-                              cmds_after_breakpoint=['set variable v=0',
-                                                     'backtrace'])
-            )
-
-        self.assertEqual(gdb_repr, '0x0')
-
-    def test_NULL_ob_type(self):
-        'Ensure that a PyObject* with NULL ob_type is handled gracefully'
-        self.assertSane('id(42)',
-                        'set v->ob_type=0')
-
-    def test_corrupt_ob_type(self):
-        'Ensure that a PyObject* with a corrupt ob_type is handled gracefully'
-        self.assertSane('id(42)',
-                        'set v->ob_type=0xDEADBEEF',
-                        exprepr='42')
-
-    def test_corrupt_tp_flags(self):
-        'Ensure that a PyObject* with a type with corrupt tp_flags is handled'
-        self.assertSane('id(42)',
-                        'set v->ob_type->tp_flags=0x0',
-                        exprepr='42')
-
-    def test_corrupt_tp_name(self):
-        'Ensure that a PyObject* with a type with corrupt tp_name is handled'
-        self.assertSane('id(42)',
-                        'set v->ob_type->tp_name=0xDEADBEEF',
-                        exprepr='42')
-
-    def test_builtins_help(self):
-        'Ensure that the new-style class _Helper in site.py can be handled'
-
-        if sys.flags.no_site:
-            self.skipTest("need site module, but -S option was used")
-
-        # (this was the issue causing tracebacks in
-        #  http://bugs.python.org/issue8032#msg100537 )
-        gdb_repr, gdb_output = self.get_gdb_repr('id(__builtins__.help)', import_site=True)
-
-        m = re.match(r'<_Helper\(\) at remote 0x-?[0-9a-f]+>', gdb_repr)
-        self.assertTrue(m,
-                        msg='Unexpected rendering %r' % gdb_repr)
-
-    def test_selfreferential_list(self):
-        '''Ensure that a reference loop involving a list doesn't lead proxyval
-        into an infinite loop:'''
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr("a = [3, 4, 5] ; a.append(a) ; id(a)")
-        self.assertEqual(gdb_repr, '[3, 4, 5, [...]]')
-
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr("a = [3, 4, 5] ; b = [a] ; a.append(b) ; id(a)")
-        self.assertEqual(gdb_repr, '[3, 4, 5, [[...]]]')
-
-    def test_selfreferential_dict(self):
-        '''Ensure that a reference loop involving a dict doesn't lead proxyval
-        into an infinite loop:'''
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr("a = {} ; b = {'bar':a} ; a['foo'] = b ; id(a)")
-
-        self.assertEqual(gdb_repr, "{'foo': {'bar': {...}}}")
-
-    def test_selfreferential_old_style_instance(self):
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr('''
-class Foo:
-    pass
-foo = Foo()
-foo.an_attr = foo
-id(foo)''')
-        self.assertTrue(re.match(r'<Foo\(an_attr=<\.\.\.>\) at remote 0x-?[0-9a-f]+>',
-                                 gdb_repr),
-                        'Unexpected gdb representation: %r\n%s' % \
-                            (gdb_repr, gdb_output))
-
-    def test_selfreferential_new_style_instance(self):
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr('''
-class Foo(object):
-    pass
-foo = Foo()
-foo.an_attr = foo
-id(foo)''')
-        self.assertTrue(re.match(r'<Foo\(an_attr=<\.\.\.>\) at remote 0x-?[0-9a-f]+>',
-                                 gdb_repr),
-                        'Unexpected gdb representation: %r\n%s' % \
-                            (gdb_repr, gdb_output))
-
-        gdb_repr, gdb_output = \
-            self.get_gdb_repr('''
-class Foo(object):
-    pass
-a = Foo()
-b = Foo()
-a.an_attr = b
-b.an_attr = a
-id(a)''')
-        self.assertTrue(re.match(r'<Foo\(an_attr=<Foo\(an_attr=<\.\.\.>\) at remote 0x-?[0-9a-f]+>\) at remote 0x-?[0-9a-f]+>',
-                                 gdb_repr),
-                        'Unexpected gdb representation: %r\n%s' % \
-                            (gdb_repr, gdb_output))
-
-    def test_truncation(self):
-        'Verify that very long output is truncated'
-        gdb_repr, gdb_output = self.get_gdb_repr('id(list(range(1000)))')
-        self.assertEqual(gdb_repr,
-                         "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, "
-                         "14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, "
-                         "27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, "
-                         "40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, "
-                         "53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, "
-                         "66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, "
-                         "79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, "
-                         "92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, "
-                         "104, 105, 106, 107, 108, 109, 110, 111, 112, 113, "
-                         "114, 115, 116, 117, 118, 119, 120, 121, 122, 123, "
-                         "124, 125, 126, 127, 128, 129, 130, 131, 132, 133, "
-                         "134, 135, 136, 137, 138, 139, 140, 141, 142, 143, "
-                         "144, 145, 146, 147, 148, 149, 150, 151, 152, 153, "
-                         "154, 155, 156, 157, 158, 159, 160, 161, 162, 163, "
-                         "164, 165, 166, 167, 168, 169, 170, 171, 172, 173, "
-                         "174, 175, 176, 177, 178, 179, 180, 181, 182, 183, "
-                         "184, 185, 186, 187, 188, 189, 190, 191, 192, 193, "
-                         "194, 195, 196, 197, 198, 199, 200, 201, 202, 203, "
-                         "204, 205, 206, 207, 208, 209, 210, 211, 212, 213, "
-                         "214, 215, 216, 217, 218, 219, 220, 221, 222, 223, "
-                         "224, 225, 226...(truncated)")
-        self.assertEqual(len(gdb_repr),
-                         1024 + len('...(truncated)'))
-
-    def test_builtin_method(self):
-        gdb_repr, gdb_output = self.get_gdb_repr('import sys; id(sys.stdout.readlines)')
-        self.assertTrue(re.match(r'<built-in method readlines of _io.TextIOWrapper object at remote 0x-?[0-9a-f]+>',
-                                 gdb_repr),
-                        'Unexpected gdb representation: %r\n%s' % \
-                            (gdb_repr, gdb_output))
-
-    def test_frames(self):
-        gdb_output = self.get_stack_trace('''
-import sys
-def foo(a, b, c):
-    return sys._getframe(0)
-
-f = foo(3, 4, 5)
-id(f)''',
-                                          breakpoint='builtin_id',
-                                          cmds_after_breakpoint=['print (PyFrameObject*)v']
-                                          )
-        self.assertTrue(re.match(r'.*\s+\$1 =\s+Frame 0x-?[0-9a-f]+, for file <string>, line 4, in foo \(a=3.*',
-                                 gdb_output,
-                                 re.DOTALL),
-                        'Unexpected gdb representation: %r\n%s' % (gdb_output, gdb_output))
-
-@unittest.skipIf(python_is_optimized(),
-                 "Python was compiled with optimizations")
-class PyListTests(DebuggerTests):
-    def assertListing(self, expected, actual):
-        self.assertEndsWith(actual, expected)
-
-    def test_basic_command(self):
-        'Verify that the "py-list" command works'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-list'])
-
-        self.assertListing('   5    \n'
-                           '   6    def bar(a, b, c):\n'
-                           '   7        baz(a, b, c)\n'
-                           '   8    \n'
-                           '   9    def baz(*args):\n'
-                           ' >10        id(42)\n'
-                           '  11    \n'
-                           '  12    foo(1, 2, 3)\n',
-                           bt)
-
-    def test_one_abs_arg(self):
-        'Verify the "py-list" command with one absolute argument'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-list 9'])
-
-        self.assertListing('   9    def baz(*args):\n'
-                           ' >10        id(42)\n'
-                           '  11    \n'
-                           '  12    foo(1, 2, 3)\n',
-                           bt)
-
-    def test_two_abs_args(self):
-        'Verify the "py-list" command with two absolute arguments'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-list 1,3'])
-
-        self.assertListing('   1    # Sample script for use by test_gdb.py\n'
-                           '   2    \n'
-                           '   3    def foo(a, b, c):\n',
-                           bt)
-
-SAMPLE_WITH_C_CALL = """
-
-from _testcapi import pyobject_fastcall
-
-def foo(a, b, c):
-    bar(a, b, c)
-
-def bar(a, b, c):
-    pyobject_fastcall(baz, (a, b, c))
-
-def baz(*args):
-    id(42)
-
-foo(1, 2, 3)
-
-"""
-
-
-class StackNavigationTests(DebuggerTests):
-    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_pyup_command(self):
-        'Verify that the "py-up" command works'
-        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
-                                  cmds_after_breakpoint=['py-up', 'py-up'])
-        self.assertMultilineMatches(bt,
-                                    r'''^.*
-#[0-9]+ Frame 0x-?[0-9a-f]+, for file <string>, line 12, in baz \(args=\(1, 2, 3\)\)
-#[0-9]+ <built-in method pyobject_fastcall of module object at remote 0x[0-9a-f]+>
-$''')
-
-    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
-    def test_down_at_bottom(self):
-        'Verify handling of "py-down" at the bottom of the stack'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-down'])
-        self.assertEndsWith(bt,
-                            'Unable to find a newer python frame\n')
-
-    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
-    def test_up_at_top(self):
-        'Verify handling of "py-up" at the top of the stack'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-up'] * 5)
-        self.assertEndsWith(bt,
-                            'Unable to find an older python frame\n')
-
-    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_up_then_down(self):
-        'Verify "py-up" followed by "py-down"'
-        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
-                                  cmds_after_breakpoint=['py-up', 'py-up', 'py-down'])
-        self.assertMultilineMatches(bt,
-                                    r'''^.*
-#[0-9]+ Frame 0x-?[0-9a-f]+, for file <string>, line 12, in baz \(args=\(1, 2, 3\)\)
-#[0-9]+ <built-in method pyobject_fastcall of module object at remote 0x[0-9a-f]+>
-#[0-9]+ Frame 0x-?[0-9a-f]+, for file <string>, line 12, in baz \(args=\(1, 2, 3\)\)
-$''')
-
-class PyBtTests(DebuggerTests):
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_bt(self):
-        'Verify that the "py-bt" command works'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-bt'])
-        self.assertMultilineMatches(bt,
-                                    r'''^.*
-Traceback \(most recent call first\):
-  <built-in method id of module object .*>
-  File ".*gdb_sample.py", line 10, in baz
-    id\(42\)
-  File ".*gdb_sample.py", line 7, in bar
-    baz\(a, b, c\)
-  File ".*gdb_sample.py", line 4, in foo
-    bar\(a=a, b=b, c=c\)
-  File ".*gdb_sample.py", line 12, in <module>
-    foo\(1, 2, 3\)
-''')
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_bt_full(self):
-        'Verify that the "py-bt-full" command works'
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-bt-full'])
-        self.assertMultilineMatches(bt,
-                                    r'''^.*
-#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 7, in bar \(a=1, b=2, c=3\)
-    baz\(a, b, c\)
-#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 4, in foo \(a=1, b=2, c=3\)
-    bar\(a=a, b=b, c=c\)
-#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 12, in <module> \(\)
-    foo\(1, 2, 3\)
-''')
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_threads(self):
-        'Verify that "py-bt" indicates threads that are waiting for the GIL'
-        cmd = '''
-from threading import Thread
-
-class TestThread(Thread):
-    # These threads would run forever, but we'll interrupt things with the
-    # debugger
-    def run(self):
-        i = 0
-        while 1:
-             i += 1
-
-t = {}
-for i in range(4):
-   t[i] = TestThread()
-   t[i].start()
-
-# Trigger a breakpoint on the main thread
-id(42)
-
-'''
-        # Verify with "py-bt":
-        gdb_output = self.get_stack_trace(cmd,
-                                          cmds_after_breakpoint=['thread apply all py-bt'])
-        self.assertIn('Waiting for the GIL', gdb_output)
-
-        # Verify with "py-bt-full":
-        gdb_output = self.get_stack_trace(cmd,
-                                          cmds_after_breakpoint=['thread apply all py-bt-full'])
-        self.assertIn('Waiting for the GIL', gdb_output)
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    # Some older versions of gdb will fail with
-    #  "Cannot find new threads: generic error"
-    # unless we add LD_PRELOAD=PATH-TO-libpthread.so.1 as a workaround
-    def test_gc(self):
-        'Verify that "py-bt" indicates if a thread is garbage-collecting'
-        cmd = ('from gc import collect\n'
-               'id(42)\n'
-               'def foo():\n'
-               '    collect()\n'
-               'def bar():\n'
-               '    foo()\n'
-               'bar()\n')
-        # Verify with "py-bt":
-        gdb_output = self.get_stack_trace(cmd,
-                                          cmds_after_breakpoint=['break update_refs', 'continue', 'py-bt'],
-                                          )
-        self.assertIn('Garbage-collecting', gdb_output)
-
-        # Verify with "py-bt-full":
-        gdb_output = self.get_stack_trace(cmd,
-                                          cmds_after_breakpoint=['break update_refs', 'continue', 'py-bt-full'],
-                                          )
-        self.assertIn('Garbage-collecting', gdb_output)
-
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    # Some older versions of gdb will fail with
-    #  "Cannot find new threads: generic error"
-    # unless we add LD_PRELOAD=PATH-TO-libpthread.so.1 as a workaround
-    #
-    # gdb will also generate many erroneous errors such as:
-    #     Function "meth_varargs" not defined.
-    # This is because we are calling functions from an "external" module
-    # (_testcapimodule) rather than compiled-in functions. It seems difficult
-    # to suppress these. See also the comment in DebuggerTests.get_stack_trace
-    def test_pycfunction(self):
-        'Verify that "py-bt" displays invocations of PyCFunction instances'
-        # bpo-46600: If the compiler inlines _null_to_none() in meth_varargs()
-        # (ex: clang -Og), _null_to_none() is the frame #1. Otherwise,
-        # meth_varargs() is the frame #1.
-        expected_frame = r'#(1|2)'
-        # Various optimizations multiply the code paths by which these are
-        # called, so test a variety of calling conventions.
-        for func_name, args in (
-            ('meth_varargs', ''),
-            ('meth_varargs_keywords', ''),
-            ('meth_o', '[]'),
-            ('meth_noargs', ''),
-            ('meth_fastcall', ''),
-            ('meth_fastcall_keywords', ''),
-        ):
-            for obj in (
-                '_testcapi',
-                '_testcapi.MethClass',
-                '_testcapi.MethClass()',
-                '_testcapi.MethStatic()',
-
-                # XXX: bound methods don't yet give nice tracebacks
-                # '_testcapi.MethInstance()',
-            ):
-                with self.subTest(f'{obj}.{func_name}'):
-                    cmd = textwrap.dedent(f'''
-                        import _testcapi
-                        def foo():
-                            {obj}.{func_name}({args})
-                        def bar():
-                            foo()
-                        bar()
-                    ''')
-                    # Verify with "py-bt":
-                    gdb_output = self.get_stack_trace(
-                        cmd,
-                        breakpoint=func_name,
-                        cmds_after_breakpoint=['bt', 'py-bt'],
-                        # bpo-45207: Ignore 'Function "meth_varargs" not
-                        # defined.' message in stderr.
-                        ignore_stderr=True,
-                    )
-                    self.assertIn(f'<built-in method {func_name}', gdb_output)
-
-                    # Verify with "py-bt-full":
-                    gdb_output = self.get_stack_trace(
-                        cmd,
-                        breakpoint=func_name,
-                        cmds_after_breakpoint=['py-bt-full'],
-                        # bpo-45207: Ignore 'Function "meth_varargs" not
-                        # defined.' message in stderr.
-                        ignore_stderr=True,
-                    )
-                    regex = expected_frame
-                    regex += re.escape(f' <built-in method {func_name}')
-                    self.assertRegex(gdb_output, regex)
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_wrapper_call(self):
-        cmd = textwrap.dedent('''
-            class MyList(list):
-                def __init__(self):
-                    super(*[]).__init__()   # wrapper_call()
-
-            id("first break point")
-            l = MyList()
-        ''')
-        cmds_after_breakpoint = ['break wrapper_call', 'continue']
-        if CET_PROTECTION:
-            # bpo-32962: same case as in get_stack_trace():
-            # we need an additional 'next' command in order to read
-            # arguments of the innermost function of the call stack.
-            cmds_after_breakpoint.append('next')
-        cmds_after_breakpoint.append('py-bt')
-
-        # Verify with "py-bt":
-        gdb_output = self.get_stack_trace(cmd,
-                                          cmds_after_breakpoint=cmds_after_breakpoint)
-        self.assertRegex(gdb_output,
-                         r"<method-wrapper u?'__init__' of MyList object at ")
-
-class PyPrintTests(DebuggerTests):
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_basic_command(self):
-        'Verify that the "py-print" command works'
-        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
-                                  cmds_after_breakpoint=['py-up', 'py-print args'])
-        self.assertMultilineMatches(bt,
-                                    r".*\nlocal 'args' = \(1, 2, 3\)\n.*")
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
-    def test_print_after_up(self):
-        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
-                                  cmds_after_breakpoint=['py-up', 'py-up', 'py-print c', 'py-print b', 'py-print a'])
-        self.assertMultilineMatches(bt,
-                                    r".*\nlocal 'c' = 3\nlocal 'b' = 2\nlocal 'a' = 1\n.*")
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_printing_global(self):
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-up', 'py-print __name__'])
-        self.assertMultilineMatches(bt,
-                                    r".*\nglobal '__name__' = '__main__'\n.*")
-
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_printing_builtin(self):
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-up', 'py-print len'])
-        self.assertMultilineMatches(bt,
-                                    r".*\nbuiltin 'len' = <built-in method len of module object at remote 0x-?[0-9a-f]+>\n.*")
-
-class PyLocalsTests(DebuggerTests):
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_basic_command(self):
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-up', 'py-locals'])
-        self.assertMultilineMatches(bt,
-                                    r".*\nargs = \(1, 2, 3\)\n.*")
-
-    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
-    @unittest.skipIf(python_is_optimized(),
-                     "Python was compiled with optimizations")
-    def test_locals_after_up(self):
-        bt = self.get_stack_trace(script=self.get_sample_script(),
-                                  cmds_after_breakpoint=['py-up', 'py-up', 'py-locals'])
-        self.assertMultilineMatches(bt,
-                                    r'''^.*
-Locals for foo
-a = 1
-b = 2
-c = 3
-Locals for <module>
-.*$''')
-
-
-def setUpModule():
-    if support.verbose:
-        print("GDB version %s.%s:" % (gdb_major_version, gdb_minor_version))
-        for line in gdb_version.splitlines():
-            print(" " * 4 + line)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_gdb/__init__.py b/Lib/test/test_gdb/__init__.py
new file mode 100644
index 00000000000000..99557739af6748
--- /dev/null
+++ b/Lib/test/test_gdb/__init__.py
@@ -0,0 +1,29 @@
+# Verify that gdb can pretty-print the various PyObject* types
+#
+# The code for testing gdb was adapted from similar work in Unladen Swallow's
+# Lib/test/test_jit_gdb.py
+
+import os
+import sysconfig
+import unittest
+from test import support
+
+
+if support.MS_WINDOWS:
+    # On Windows, Python is usually built by MSVC. Passing /p:DebugSymbols=true
+    # option to MSBuild produces PDB debug symbols, but gdb doesn't support PDB
+    # debug symbol files.
+    raise unittest.SkipTest("test_gdb doesn't work on Windows")
+
+if support.PGO:
+    raise unittest.SkipTest("test_gdb is not useful for PGO")
+
+if not sysconfig.is_python_build():
+    raise unittest.SkipTest("test_gdb only works on source builds at the moment.")
+
+if support.check_cflags_pgo():
+    raise unittest.SkipTest("test_gdb is not reliable on PGO builds")
+
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/gdb_sample.py b/Lib/test/test_gdb/gdb_sample.py
similarity index 75%
rename from Lib/test/gdb_sample.py
rename to Lib/test/test_gdb/gdb_sample.py
index 4188f50136fb97..a7f23db73ea6e6 100644
--- a/Lib/test/gdb_sample.py
+++ b/Lib/test/test_gdb/gdb_sample.py
@@ -1,4 +1,4 @@
-# Sample script for use by test_gdb.py
+# Sample script for use by test_gdb
 
 def foo(a, b, c):
     bar(a=a, b=b, c=c)
diff --git a/Lib/test/test_gdb/test_backtrace.py b/Lib/test/test_gdb/test_backtrace.py
new file mode 100644
index 00000000000000..c41e7cb7c210de
--- /dev/null
+++ b/Lib/test/test_gdb/test_backtrace.py
@@ -0,0 +1,134 @@
+import textwrap
+import unittest
+from test import support
+from test.support import python_is_optimized
+
+from .util import setup_module, DebuggerTests, CET_PROTECTION, SAMPLE_SCRIPT
+
+
+def setUpModule():
+    setup_module()
+
+
+class PyBtTests(DebuggerTests):
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_bt(self):
+        'Verify that the "py-bt" command works'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-bt'])
+        self.assertMultilineMatches(bt,
+                                    r'''^.*
+Traceback \(most recent call first\):
+  <built-in method id of module object .*>
+  File ".*gdb_sample.py", line 10, in baz
+    id\(42\)
+  File ".*gdb_sample.py", line 7, in bar
+    baz\(a, b, c\)
+  File ".*gdb_sample.py", line 4, in foo
+    bar\(a=a, b=b, c=c\)
+  File ".*gdb_sample.py", line 12, in <module>
+    foo\(1, 2, 3\)
+''')
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_bt_full(self):
+        'Verify that the "py-bt-full" command works'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-bt-full'])
+        self.assertMultilineMatches(bt,
+                                    r'''^.*
+#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 7, in bar \(a=1, b=2, c=3\)
+    baz\(a, b, c\)
+#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 4, in foo \(a=1, b=2, c=3\)
+    bar\(a=a, b=b, c=c\)
+#[0-9]+ Frame 0x-?[0-9a-f]+, for file .*gdb_sample.py, line 12, in <module> \(\)
+    foo\(1, 2, 3\)
+''')
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    @support.requires_resource('cpu')
+    def test_threads(self):
+        'Verify that "py-bt" indicates threads that are waiting for the GIL'
+        cmd = '''
+from threading import Thread
+
+class TestThread(Thread):
+    # These threads would run forever, but we'll interrupt things with the
+    # debugger
+    def run(self):
+        i = 0
+        while 1:
+             i += 1
+
+t = {}
+for i in range(4):
+   t[i] = TestThread()
+   t[i].start()
+
+# Trigger a breakpoint on the main thread
+id(42)
+
+'''
+        # Verify with "py-bt":
+        gdb_output = self.get_stack_trace(cmd,
+                                          cmds_after_breakpoint=['thread apply all py-bt'])
+        self.assertIn('Waiting for the GIL', gdb_output)
+
+        # Verify with "py-bt-full":
+        gdb_output = self.get_stack_trace(cmd,
+                                          cmds_after_breakpoint=['thread apply all py-bt-full'])
+        self.assertIn('Waiting for the GIL', gdb_output)
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    # Some older versions of gdb will fail with
+    #  "Cannot find new threads: generic error"
+    # unless we add LD_PRELOAD=PATH-TO-libpthread.so.1 as a workaround
+    def test_gc(self):
+        'Verify that "py-bt" indicates if a thread is garbage-collecting'
+        cmd = ('from gc import collect\n'
+               'id(42)\n'
+               'def foo():\n'
+               '    collect()\n'
+               'def bar():\n'
+               '    foo()\n'
+               'bar()\n')
+        # Verify with "py-bt":
+        gdb_output = self.get_stack_trace(cmd,
+                                          cmds_after_breakpoint=['break update_refs', 'continue', 'py-bt'],
+                                          )
+        self.assertIn('Garbage-collecting', gdb_output)
+
+        # Verify with "py-bt-full":
+        gdb_output = self.get_stack_trace(cmd,
+                                          cmds_after_breakpoint=['break update_refs', 'continue', 'py-bt-full'],
+                                          )
+        self.assertIn('Garbage-collecting', gdb_output)
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_wrapper_call(self):
+        cmd = textwrap.dedent('''
+            class MyList(list):
+                def __init__(self):
+                    super(*[]).__init__()   # wrapper_call()
+
+            id("first break point")
+            l = MyList()
+        ''')
+        cmds_after_breakpoint = ['break wrapper_call', 'continue']
+        if CET_PROTECTION:
+            # bpo-32962: same case as in get_stack_trace():
+            # we need an additional 'next' command in order to read
+            # arguments of the innermost function of the call stack.
+            cmds_after_breakpoint.append('next')
+        cmds_after_breakpoint.append('py-bt')
+
+        # Verify with "py-bt":
+        gdb_output = self.get_stack_trace(cmd,
+                                          cmds_after_breakpoint=cmds_after_breakpoint)
+        self.assertRegex(gdb_output,
+                         r"<method-wrapper u?'__init__' of MyList object at ")
diff --git a/Lib/test/test_gdb/test_cfunction.py b/Lib/test/test_gdb/test_cfunction.py
new file mode 100644
index 00000000000000..0a62014923e61f
--- /dev/null
+++ b/Lib/test/test_gdb/test_cfunction.py
@@ -0,0 +1,85 @@
+import textwrap
+import unittest
+from test import support
+
+from .util import setup_module, DebuggerTests
+
+
+def setUpModule():
+    setup_module()
+
+
+@unittest.skipIf(support.python_is_optimized(),
+                 "Python was compiled with optimizations")
+@support.requires_resource('cpu')
+class CFunctionTests(DebuggerTests):
+    def check(self, func_name, cmd):
+        # Verify with "py-bt":
+        gdb_output = self.get_stack_trace(
+            cmd,
+            breakpoint=func_name,
+            cmds_after_breakpoint=['bt', 'py-bt'],
+            # bpo-45207: Ignore 'Function "meth_varargs" not
+            # defined.' message in stderr.
+            ignore_stderr=True,
+        )
+        self.assertIn(f'<built-in method {func_name}', gdb_output)
+
+    # Some older versions of gdb will fail with
+    #  "Cannot find new threads: generic error"
+    # unless we add LD_PRELOAD=PATH-TO-libpthread.so.1 as a workaround
+    #
+    # gdb will also generate many erroneous errors such as:
+    #     Function "meth_varargs" not defined.
+    # This is because we are calling functions from an "external" module
+    # (_testcapimodule) rather than compiled-in functions. It seems difficult
+    # to suppress these. See also the comment in DebuggerTests.get_stack_trace
+    def check_pycfunction(self, func_name, args):
+        'Verify that "py-bt" displays invocations of PyCFunction instances'
+
+        if support.verbose:
+            print()
+
+        # Various optimizations multiply the code paths by which these are
+        # called, so test a variety of calling conventions.
+        for obj in (
+            '_testcapi',
+            '_testcapi.MethClass',
+            '_testcapi.MethClass()',
+            '_testcapi.MethStatic()',
+
+            # XXX: bound methods don't yet give nice tracebacks
+            # '_testcapi.MethInstance()',
+        ):
+            with self.subTest(f'{obj}.{func_name}'):
+                call = f'{obj}.{func_name}({args})'
+                cmd = textwrap.dedent(f'''
+                    import _testcapi
+                    def foo():
+                        {call}
+                    def bar():
+                        foo()
+                    bar()
+                ''')
+                if support.verbose:
+                    print(f'  test call: {call}', flush=True)
+
+                self.check(func_name, cmd)
+
+    def test_pycfunction_noargs(self):
+        self.check_pycfunction('meth_noargs', '')
+
+    def test_pycfunction_o(self):
+        self.check_pycfunction('meth_o', '[]')
+
+    def test_pycfunction_varargs(self):
+        self.check_pycfunction('meth_varargs', '')
+
+    def test_pycfunction_varargs_keywords(self):
+        self.check_pycfunction('meth_varargs_keywords', '')
+
+    def test_pycfunction_fastcall(self):
+        self.check_pycfunction('meth_fastcall', '')
+
+    def test_pycfunction_fastcall_keywords(self):
+        self.check_pycfunction('meth_fastcall_keywords', '')
diff --git a/Lib/test/test_gdb/test_cfunction_full.py b/Lib/test/test_gdb/test_cfunction_full.py
new file mode 100644
index 00000000000000..572cbdab5d77c0
--- /dev/null
+++ b/Lib/test/test_gdb/test_cfunction_full.py
@@ -0,0 +1,36 @@
+"""
+Similar to test_cfunction but test "py-bt-full" command.
+"""
+
+import re
+
+from .util import setup_module
+from .test_cfunction import CFunctionTests
+
+
+def setUpModule():
+    setup_module()
+
+
+class CFunctionFullTests(CFunctionTests):
+    def check(self, func_name, cmd):
+        # Verify with "py-bt-full":
+        gdb_output = self.get_stack_trace(
+            cmd,
+            breakpoint=func_name,
+            cmds_after_breakpoint=['bt', 'py-bt-full'],
+            # bpo-45207: Ignore 'Function "meth_varargs" not
+            # defined.' message in stderr.
+            ignore_stderr=True,
+        )
+
+        # bpo-46600: If the compiler inlines _null_to_none() in
+        # meth_varargs() (ex: clang -Og), _null_to_none() is the
+        # frame #1. Otherwise, meth_varargs() is the frame #1.
+        regex = r'#(1|2)'
+        regex += re.escape(f' <built-in method {func_name}')
+        self.assertRegex(gdb_output, regex)
+
+
+# Delete the test case, otherwise it's executed twice
+del CFunctionTests
diff --git a/Lib/test/test_gdb/test_misc.py b/Lib/test/test_gdb/test_misc.py
new file mode 100644
index 00000000000000..1047f4867c1d03
--- /dev/null
+++ b/Lib/test/test_gdb/test_misc.py
@@ -0,0 +1,188 @@
+import re
+import unittest
+from test.support import python_is_optimized
+
+from .util import run_gdb, setup_module, DebuggerTests, SAMPLE_SCRIPT
+
+
+def setUpModule():
+    setup_module()
+
+
+def gdb_has_frame_select():
+    # Does this build of gdb have gdb.Frame.select ?
+    stdout, stderr = run_gdb("--eval-command=python print(dir(gdb.Frame))")
+    m = re.match(r'.*\[(.*)\].*', stdout)
+    if not m:
+        raise unittest.SkipTest(
+            f"Unable to parse output from gdb.Frame.select test\n"
+            f"stdout={stdout!r}\n"
+            f"stderr={stderr!r}\n")
+    gdb_frame_dir = m.group(1).split(', ')
+    return "'select'" in gdb_frame_dir
+
+HAS_PYUP_PYDOWN = gdb_has_frame_select()
+
+
+@unittest.skipIf(python_is_optimized(),
+                 "Python was compiled with optimizations")
+class PyListTests(DebuggerTests):
+    def assertListing(self, expected, actual):
+        self.assertEndsWith(actual, expected)
+
+    def test_basic_command(self):
+        'Verify that the "py-list" command works'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-list'])
+
+        self.assertListing('   5    \n'
+                           '   6    def bar(a, b, c):\n'
+                           '   7        baz(a, b, c)\n'
+                           '   8    \n'
+                           '   9    def baz(*args):\n'
+                           ' >10        id(42)\n'
+                           '  11    \n'
+                           '  12    foo(1, 2, 3)\n',
+                           bt)
+
+    def test_one_abs_arg(self):
+        'Verify the "py-list" command with one absolute argument'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-list 9'])
+
+        self.assertListing('   9    def baz(*args):\n'
+                           ' >10        id(42)\n'
+                           '  11    \n'
+                           '  12    foo(1, 2, 3)\n',
+                           bt)
+
+    def test_two_abs_args(self):
+        'Verify the "py-list" command with two absolute arguments'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-list 1,3'])
+
+        self.assertListing('   1    # Sample script for use by test_gdb\n'
+                           '   2    \n'
+                           '   3    def foo(a, b, c):\n',
+                           bt)
+
+SAMPLE_WITH_C_CALL = """
+
+from _testcapi import pyobject_vectorcall
+
+def foo(a, b, c):
+    bar(a, b, c)
+
+def bar(a, b, c):
+    pyobject_vectorcall(baz, (a, b, c), None)
+
+def baz(*args):
+    id(42)
+
+foo(1, 2, 3)
+
+"""
+
+
+class StackNavigationTests(DebuggerTests):
+    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_pyup_command(self):
+        'Verify that the "py-up" command works'
+        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
+                                  cmds_after_breakpoint=['py-up', 'py-up'])
+        self.assertMultilineMatches(bt,
+                                    r'''^.*
+#[0-9]+ Frame 0x-?[0-9a-f]+, for file <string>, line 12, in baz \(args=\(1, 2, 3\)\)
+#[0-9]+ <built-in method pyobject_vectorcall of module object at remote 0x[0-9a-f]+>
+$''')
+
+    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
+    def test_down_at_bottom(self):
+        'Verify handling of "py-down" at the bottom of the stack'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-down'])
+        self.assertEndsWith(bt,
+                            'Unable to find a newer python frame\n')
+
+    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
+    def test_up_at_top(self):
+        'Verify handling of "py-up" at the top of the stack'
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-up'] * 5)
+        self.assertEndsWith(bt,
+                            'Unable to find an older python frame\n')
+
+    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_up_then_down(self):
+        'Verify "py-up" followed by "py-down"'
+        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
+                                  cmds_after_breakpoint=['py-up', 'py-up', 'py-down'])
+        self.assertMultilineMatches(bt,
+                                    r'''^.*
+#[0-9]+ Frame 0x-?[0-9a-f]+, for file <string>, line 12, in baz \(args=\(1, 2, 3\)\)
+#[0-9]+ <built-in method pyobject_vectorcall of module object at remote 0x[0-9a-f]+>
+#[0-9]+ Frame 0x-?[0-9a-f]+, for file <string>, line 12, in baz \(args=\(1, 2, 3\)\)
+$''')
+
+class PyPrintTests(DebuggerTests):
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_basic_command(self):
+        'Verify that the "py-print" command works'
+        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
+                                  cmds_after_breakpoint=['py-up', 'py-print args'])
+        self.assertMultilineMatches(bt,
+                                    r".*\nlocal 'args' = \(1, 2, 3\)\n.*")
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
+    def test_print_after_up(self):
+        bt = self.get_stack_trace(source=SAMPLE_WITH_C_CALL,
+                                  cmds_after_breakpoint=['py-up', 'py-up', 'py-print c', 'py-print b', 'py-print a'])
+        self.assertMultilineMatches(bt,
+                                    r".*\nlocal 'c' = 3\nlocal 'b' = 2\nlocal 'a' = 1\n.*")
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_printing_global(self):
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-up', 'py-print __name__'])
+        self.assertMultilineMatches(bt,
+                                    r".*\nglobal '__name__' = '__main__'\n.*")
+
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_printing_builtin(self):
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-up', 'py-print len'])
+        self.assertMultilineMatches(bt,
+                                    r".*\nbuiltin 'len' = <built-in method len of module object at remote 0x-?[0-9a-f]+>\n.*")
+
+class PyLocalsTests(DebuggerTests):
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_basic_command(self):
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-up', 'py-locals'])
+        self.assertMultilineMatches(bt,
+                                    r".*\nargs = \(1, 2, 3\)\n.*")
+
+    @unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
+    @unittest.skipIf(python_is_optimized(),
+                     "Python was compiled with optimizations")
+    def test_locals_after_up(self):
+        bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
+                                  cmds_after_breakpoint=['py-up', 'py-up', 'py-locals'])
+        self.assertMultilineMatches(bt,
+                                    r'''^.*
+Locals for foo
+a = 1
+b = 2
+c = 3
+Locals for <module>
+.*$''')
diff --git a/Lib/test/test_gdb/test_pretty_print.py b/Lib/test/test_gdb/test_pretty_print.py
new file mode 100644
index 00000000000000..dfc77d65ab16a4
--- /dev/null
+++ b/Lib/test/test_gdb/test_pretty_print.py
@@ -0,0 +1,438 @@
+import re
+import sys
+from test import support
+
+from .util import (
+    BREAKPOINT_FN, GDB_VERSION,
+    run_gdb, setup_module, DebuggerTests)
+
+
+def setUpModule():
+    setup_module()
+
+
+class PrettyPrintTests(DebuggerTests):
+    def get_gdb_repr(self, source,
+                     cmds_after_breakpoint=None,
+                     import_site=False):
+        # Given an input python source representation of data,
+        # run "python -c'id(DATA)'" under gdb with a breakpoint on
+        # builtin_id and scrape out gdb's representation of the "op"
+        # parameter, and verify that the gdb displays the same string
+        #
+        # Verify that the gdb displays the expected string
+        #
+        # For a nested structure, the first time we hit the breakpoint will
+        # give us the top-level structure
+
+        # NOTE: avoid decoding too much of the traceback as some
+        # undecodable characters may lurk there in optimized mode
+        # (issue #19743).
+        cmds_after_breakpoint = cmds_after_breakpoint or ["backtrace 1"]
+        gdb_output = self.get_stack_trace(source, breakpoint=BREAKPOINT_FN,
+                                          cmds_after_breakpoint=cmds_after_breakpoint,
+                                          import_site=import_site)
+        # gdb can insert additional '\n' and space characters in various places
+        # in its output, depending on the width of the terminal it's connected
+        # to (using its "wrap_here" function)
+        m = re.search(
+            # Match '#0 builtin_id(self=..., v=...)'
+            r'#0\s+builtin_id\s+\(self\=.*,\s+v=\s*(.*?)?\)'
+            # Match ' at Python/bltinmodule.c'.
+            # bpo-38239: builtin_id() is defined in Python/bltinmodule.c,
+            # but accept any "Directory\file.c" to support Link Time
+            # Optimization (LTO).
+            r'\s+at\s+\S*[A-Za-z]+/[A-Za-z0-9_-]+\.c',
+            gdb_output, re.DOTALL)
+        if not m:
+            self.fail('Unexpected gdb output: %r\n%s' % (gdb_output, gdb_output))
+        return m.group(1), gdb_output
+
+    def test_getting_backtrace(self):
+        gdb_output = self.get_stack_trace('id(42)')
+        self.assertTrue(BREAKPOINT_FN in gdb_output)
+
+    def assertGdbRepr(self, val, exp_repr=None):
+        # Ensure that gdb's rendering of the value in a debugged process
+        # matches repr(value) in this process:
+        gdb_repr, gdb_output = self.get_gdb_repr('id(' + ascii(val) + ')')
+        if not exp_repr:
+            exp_repr = repr(val)
+        self.assertEqual(gdb_repr, exp_repr,
+                         ('%r did not equal expected %r; full output was:\n%s'
+                          % (gdb_repr, exp_repr, gdb_output)))
+
+    @support.requires_resource('cpu')
+    def test_int(self):
+        'Verify the pretty-printing of various int values'
+        self.assertGdbRepr(42)
+        self.assertGdbRepr(0)
+        self.assertGdbRepr(-7)
+        self.assertGdbRepr(1000000000000)
+        self.assertGdbRepr(-1000000000000000)
+
+    def test_singletons(self):
+        'Verify the pretty-printing of True, False and None'
+        self.assertGdbRepr(True)
+        self.assertGdbRepr(False)
+        self.assertGdbRepr(None)
+
+    def test_dicts(self):
+        'Verify the pretty-printing of dictionaries'
+        self.assertGdbRepr({})
+        self.assertGdbRepr({'foo': 'bar'}, "{'foo': 'bar'}")
+        # Python preserves insertion order since 3.6
+        self.assertGdbRepr({'foo': 'bar', 'douglas': 42}, "{'foo': 'bar', 'douglas': 42}")
+
+    def test_lists(self):
+        'Verify the pretty-printing of lists'
+        self.assertGdbRepr([])
+        self.assertGdbRepr(list(range(5)))
+
+    @support.requires_resource('cpu')
+    def test_bytes(self):
+        'Verify the pretty-printing of bytes'
+        self.assertGdbRepr(b'')
+        self.assertGdbRepr(b'And now for something hopefully the same')
+        self.assertGdbRepr(b'string with embedded NUL here \0 and then some more text')
+        self.assertGdbRepr(b'this is a tab:\t'
+                           b' this is a slash-N:\n'
+                           b' this is a slash-R:\r'
+                           )
+
+        self.assertGdbRepr(b'this is byte 255:\xff and byte 128:\x80')
+
+        self.assertGdbRepr(bytes([b for b in range(255)]))
+
+    @support.requires_resource('cpu')
+    def test_strings(self):
+        'Verify the pretty-printing of unicode strings'
+        # We cannot simply call locale.getpreferredencoding() here,
+        # as GDB might have been linked against a different version
+        # of Python with a different encoding and coercion policy
+        # with respect to PEP 538 and PEP 540.
+        stdout, stderr = run_gdb(
+            '--eval-command',
+            'python import locale; print(locale.getpreferredencoding())')
+
+        encoding = stdout
+        if stderr or not encoding:
+            raise RuntimeError(
+                f'unable to determine the Python locale preferred encoding '
+                f'of embedded Python in GDB\n'
+                f'stdout={stdout!r}\n'
+                f'stderr={stderr!r}')
+
+        def check_repr(text):
+            try:
+                text.encode(encoding)
+            except UnicodeEncodeError:
+                self.assertGdbRepr(text, ascii(text))
+            else:
+                self.assertGdbRepr(text)
+
+        self.assertGdbRepr('')
+        self.assertGdbRepr('And now for something hopefully the same')
+        self.assertGdbRepr('string with embedded NUL here \0 and then some more text')
+
+        # Test printing a single character:
+        #    U+2620 SKULL AND CROSSBONES
+        check_repr('\u2620')
+
+        # Test printing a Japanese unicode string
+        # (I believe this reads "mojibake", using 3 characters from the CJK
+        # Unified Ideographs area, followed by U+3051 HIRAGANA LETTER KE)
+        check_repr('\u6587\u5b57\u5316\u3051')
+
+        # Test a character outside the BMP:
+        #    U+1D121 MUSICAL SYMBOL C CLEF
+        # This is:
+        # UTF-8: 0xF0 0x9D 0x84 0xA1
+        # UTF-16: 0xD834 0xDD21
+        check_repr(chr(0x1D121))
+
+    def test_tuples(self):
+        'Verify the pretty-printing of tuples'
+        self.assertGdbRepr(tuple(), '()')
+        self.assertGdbRepr((1,), '(1,)')
+        self.assertGdbRepr(('foo', 'bar', 'baz'))
+
+    @support.requires_resource('cpu')
+    def test_sets(self):
+        'Verify the pretty-printing of sets'
+        if GDB_VERSION < (7, 3):
+            self.skipTest("pretty-printing of sets needs gdb 7.3 or later")
+        self.assertGdbRepr(set(), "set()")
+        self.assertGdbRepr(set(['a']), "{'a'}")
+        # PYTHONHASHSEED is need to get the exact frozenset item order
+        if not sys.flags.ignore_environment:
+            self.assertGdbRepr(set(['a', 'b']), "{'a', 'b'}")
+            self.assertGdbRepr(set([4, 5, 6]), "{4, 5, 6}")
+
+        # Ensure that we handle sets containing the "dummy" key value,
+        # which happens on deletion:
+        gdb_repr, gdb_output = self.get_gdb_repr('''s = set(['a','b'])
+s.remove('a')
+id(s)''')
+        self.assertEqual(gdb_repr, "{'b'}")
+
+    @support.requires_resource('cpu')
+    def test_frozensets(self):
+        'Verify the pretty-printing of frozensets'
+        if GDB_VERSION < (7, 3):
+            self.skipTest("pretty-printing of frozensets needs gdb 7.3 or later")
+        self.assertGdbRepr(frozenset(), "frozenset()")
+        self.assertGdbRepr(frozenset(['a']), "frozenset({'a'})")
+        # PYTHONHASHSEED is need to get the exact frozenset item order
+        if not sys.flags.ignore_environment:
+            self.assertGdbRepr(frozenset(['a', 'b']), "frozenset({'a', 'b'})")
+            self.assertGdbRepr(frozenset([4, 5, 6]), "frozenset({4, 5, 6})")
+
+    def test_exceptions(self):
+        # Test a RuntimeError
+        gdb_repr, gdb_output = self.get_gdb_repr('''
+try:
+    raise RuntimeError("I am an error")
+except RuntimeError as e:
+    id(e)
+''')
+        self.assertEqual(gdb_repr,
+                         "RuntimeError('I am an error',)")
+
+
+        # Test division by zero:
+        gdb_repr, gdb_output = self.get_gdb_repr('''
+try:
+    a = 1 / 0
+except ZeroDivisionError as e:
+    id(e)
+''')
+        self.assertEqual(gdb_repr,
+                         "ZeroDivisionError('division by zero',)")
+
+    def test_modern_class(self):
+        'Verify the pretty-printing of new-style class instances'
+        gdb_repr, gdb_output = self.get_gdb_repr('''
+class Foo:
+    pass
+foo = Foo()
+foo.an_int = 42
+id(foo)''')
+        m = re.match(r'<Foo\(an_int=42\) at remote 0x-?[0-9a-f]+>', gdb_repr)
+        self.assertTrue(m,
+                        msg='Unexpected new-style class rendering %r' % gdb_repr)
+
+    def test_subclassing_list(self):
+        'Verify the pretty-printing of an instance of a list subclass'
+        gdb_repr, gdb_output = self.get_gdb_repr('''
+class Foo(list):
+    pass
+foo = Foo()
+foo += [1, 2, 3]
+foo.an_int = 42
+id(foo)''')
+        m = re.match(r'<Foo\(an_int=42\) at remote 0x-?[0-9a-f]+>', gdb_repr)
+
+        self.assertTrue(m,
+                        msg='Unexpected new-style class rendering %r' % gdb_repr)
+
+    def test_subclassing_tuple(self):
+        'Verify the pretty-printing of an instance of a tuple subclass'
+        # This should exercise the negative tp_dictoffset code in the
+        # new-style class support
+        gdb_repr, gdb_output = self.get_gdb_repr('''
+class Foo(tuple):
+    pass
+foo = Foo((1, 2, 3))
+foo.an_int = 42
+id(foo)''')
+        m = re.match(r'<Foo\(an_int=42\) at remote 0x-?[0-9a-f]+>', gdb_repr)
+
+        self.assertTrue(m,
+                        msg='Unexpected new-style class rendering %r' % gdb_repr)
+
+    def assertSane(self, source, corruption, exprepr=None):
+        '''Run Python under gdb, corrupting variables in the inferior process
+        immediately before taking a backtrace.
+
+        Verify that the variable's representation is the expected failsafe
+        representation'''
+        if corruption:
+            cmds_after_breakpoint=[corruption, 'backtrace']
+        else:
+            cmds_after_breakpoint=['backtrace']
+
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr(source,
+                              cmds_after_breakpoint=cmds_after_breakpoint)
+        if exprepr:
+            if gdb_repr == exprepr:
+                # gdb managed to print the value in spite of the corruption;
+                # this is good (see http://bugs.python.org/issue8330)
+                return
+
+        # Match anything for the type name; 0xDEADBEEF could point to
+        # something arbitrary (see  http://bugs.python.org/issue8330)
+        pattern = '<.* at remote 0x-?[0-9a-f]+>'
+
+        m = re.match(pattern, gdb_repr)
+        if not m:
+            self.fail('Unexpected gdb representation: %r\n%s' % \
+                          (gdb_repr, gdb_output))
+
+    def test_NULL_ptr(self):
+        'Ensure that a NULL PyObject* is handled gracefully'
+        gdb_repr, gdb_output = (
+            self.get_gdb_repr('id(42)',
+                              cmds_after_breakpoint=['set variable v=0',
+                                                     'backtrace'])
+            )
+
+        self.assertEqual(gdb_repr, '0x0')
+
+    def test_NULL_ob_type(self):
+        'Ensure that a PyObject* with NULL ob_type is handled gracefully'
+        self.assertSane('id(42)',
+                        'set v->ob_type=0')
+
+    def test_corrupt_ob_type(self):
+        'Ensure that a PyObject* with a corrupt ob_type is handled gracefully'
+        self.assertSane('id(42)',
+                        'set v->ob_type=0xDEADBEEF',
+                        exprepr='42')
+
+    def test_corrupt_tp_flags(self):
+        'Ensure that a PyObject* with a type with corrupt tp_flags is handled'
+        self.assertSane('id(42)',
+                        'set v->ob_type->tp_flags=0x0',
+                        exprepr='42')
+
+    def test_corrupt_tp_name(self):
+        'Ensure that a PyObject* with a type with corrupt tp_name is handled'
+        self.assertSane('id(42)',
+                        'set v->ob_type->tp_name=0xDEADBEEF',
+                        exprepr='42')
+
+    def test_builtins_help(self):
+        'Ensure that the new-style class _Helper in site.py can be handled'
+
+        if sys.flags.no_site:
+            self.skipTest("need site module, but -S option was used")
+
+        # (this was the issue causing tracebacks in
+        #  http://bugs.python.org/issue8032#msg100537 )
+        gdb_repr, gdb_output = self.get_gdb_repr('id(__builtins__.help)', import_site=True)
+
+        m = re.match(r'<_Helper\(\) at remote 0x-?[0-9a-f]+>', gdb_repr)
+        self.assertTrue(m,
+                        msg='Unexpected rendering %r' % gdb_repr)
+
+    def test_selfreferential_list(self):
+        '''Ensure that a reference loop involving a list doesn't lead proxyval
+        into an infinite loop:'''
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr("a = [3, 4, 5] ; a.append(a) ; id(a)")
+        self.assertEqual(gdb_repr, '[3, 4, 5, [...]]')
+
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr("a = [3, 4, 5] ; b = [a] ; a.append(b) ; id(a)")
+        self.assertEqual(gdb_repr, '[3, 4, 5, [[...]]]')
+
+    def test_selfreferential_dict(self):
+        '''Ensure that a reference loop involving a dict doesn't lead proxyval
+        into an infinite loop:'''
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr("a = {} ; b = {'bar':a} ; a['foo'] = b ; id(a)")
+
+        self.assertEqual(gdb_repr, "{'foo': {'bar': {...}}}")
+
+    def test_selfreferential_old_style_instance(self):
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr('''
+class Foo:
+    pass
+foo = Foo()
+foo.an_attr = foo
+id(foo)''')
+        self.assertTrue(re.match(r'<Foo\(an_attr=<\.\.\.>\) at remote 0x-?[0-9a-f]+>',
+                                 gdb_repr),
+                        'Unexpected gdb representation: %r\n%s' % \
+                            (gdb_repr, gdb_output))
+
+    def test_selfreferential_new_style_instance(self):
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr('''
+class Foo(object):
+    pass
+foo = Foo()
+foo.an_attr = foo
+id(foo)''')
+        self.assertTrue(re.match(r'<Foo\(an_attr=<\.\.\.>\) at remote 0x-?[0-9a-f]+>',
+                                 gdb_repr),
+                        'Unexpected gdb representation: %r\n%s' % \
+                            (gdb_repr, gdb_output))
+
+        gdb_repr, gdb_output = \
+            self.get_gdb_repr('''
+class Foo(object):
+    pass
+a = Foo()
+b = Foo()
+a.an_attr = b
+b.an_attr = a
+id(a)''')
+        self.assertTrue(re.match(r'<Foo\(an_attr=<Foo\(an_attr=<\.\.\.>\) at remote 0x-?[0-9a-f]+>\) at remote 0x-?[0-9a-f]+>',
+                                 gdb_repr),
+                        'Unexpected gdb representation: %r\n%s' % \
+                            (gdb_repr, gdb_output))
+
+    def test_truncation(self):
+        'Verify that very long output is truncated'
+        gdb_repr, gdb_output = self.get_gdb_repr('id(list(range(1000)))')
+        self.assertEqual(gdb_repr,
+                         "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, "
+                         "14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, "
+                         "27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, "
+                         "40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, "
+                         "53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, "
+                         "66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, "
+                         "79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, "
+                         "92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, "
+                         "104, 105, 106, 107, 108, 109, 110, 111, 112, 113, "
+                         "114, 115, 116, 117, 118, 119, 120, 121, 122, 123, "
+                         "124, 125, 126, 127, 128, 129, 130, 131, 132, 133, "
+                         "134, 135, 136, 137, 138, 139, 140, 141, 142, 143, "
+                         "144, 145, 146, 147, 148, 149, 150, 151, 152, 153, "
+                         "154, 155, 156, 157, 158, 159, 160, 161, 162, 163, "
+                         "164, 165, 166, 167, 168, 169, 170, 171, 172, 173, "
+                         "174, 175, 176, 177, 178, 179, 180, 181, 182, 183, "
+                         "184, 185, 186, 187, 188, 189, 190, 191, 192, 193, "
+                         "194, 195, 196, 197, 198, 199, 200, 201, 202, 203, "
+                         "204, 205, 206, 207, 208, 209, 210, 211, 212, 213, "
+                         "214, 215, 216, 217, 218, 219, 220, 221, 222, 223, "
+                         "224, 225, 226...(truncated)")
+        self.assertEqual(len(gdb_repr),
+                         1024 + len('...(truncated)'))
+
+    def test_builtin_method(self):
+        gdb_repr, gdb_output = self.get_gdb_repr('import sys; id(sys.stdout.readlines)')
+        self.assertTrue(re.match(r'<built-in method readlines of _io.TextIOWrapper object at remote 0x-?[0-9a-f]+>',
+                                 gdb_repr),
+                        'Unexpected gdb representation: %r\n%s' % \
+                            (gdb_repr, gdb_output))
+
+    def test_frames(self):
+        gdb_output = self.get_stack_trace('''
+import sys
+def foo(a, b, c):
+    return sys._getframe(0)
+
+f = foo(3, 4, 5)
+id(f)''',
+                                          breakpoint='builtin_id',
+                                          cmds_after_breakpoint=['print (PyFrameObject*)v']
+                                          )
+        self.assertTrue(re.match(r'.*\s+\$1 =\s+Frame 0x-?[0-9a-f]+, for file <string>, line 4, in foo \(a=3.*',
+                                 gdb_output,
+                                 re.DOTALL),
+                        'Unexpected gdb representation: %r\n%s' % (gdb_output, gdb_output))
diff --git a/Lib/test/test_gdb/util.py b/Lib/test/test_gdb/util.py
new file mode 100644
index 00000000000000..8fe9cfc543395e
--- /dev/null
+++ b/Lib/test/test_gdb/util.py
@@ -0,0 +1,291 @@
+import os
+import re
+import shlex
+import shutil
+import subprocess
+import sys
+import sysconfig
+import unittest
+from test import support
+
+
+GDB_PROGRAM = shutil.which('gdb') or 'gdb'
+
+# Location of custom hooks file in a repository checkout.
+CHECKOUT_HOOK_PATH = os.path.join(os.path.dirname(sys.executable),
+                                  'python-gdb.py')
+
+SAMPLE_SCRIPT = os.path.join(os.path.dirname(__file__), 'gdb_sample.py')
+BREAKPOINT_FN = 'builtin_id'
+
+PYTHONHASHSEED = '123'
+
+
+def clean_environment():
+    # Remove PYTHON* environment variables such as PYTHONHOME
+    return {name: value for name, value in os.environ.items()
+            if not name.startswith('PYTHON')}
+
+
+# Temporary value until it's initialized by get_gdb_version() below
+GDB_VERSION = (0, 0)
+
+def run_gdb(*args, exitcode=0, check=True, **env_vars):
+    """Runs gdb in --batch mode with the additional arguments given by *args.
+
+    Returns its (stdout, stderr) decoded from utf-8 using the replace handler.
+    """
+    env = clean_environment()
+    if env_vars:
+        env.update(env_vars)
+
+    cmd = [GDB_PROGRAM,
+           # Batch mode: Exit after processing all the command files
+           # specified with -x/--command
+           '--batch',
+            # -nx: Do not execute commands from any .gdbinit initialization
+            # files (gh-66384)
+           '-nx']
+    if GDB_VERSION >= (7, 4):
+        cmd.extend(('--init-eval-command',
+                    f'add-auto-load-safe-path {CHECKOUT_HOOK_PATH}'))
+    cmd.extend(args)
+
+    proc = subprocess.run(
+        cmd,
+        # Redirect stdin to prevent gdb from messing with the terminal settings
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        encoding="utf8", errors="backslashreplace",
+        env=env)
+
+    stdout = proc.stdout
+    stderr = proc.stderr
+    if check and proc.returncode != exitcode:
+        cmd_text = shlex.join(cmd)
+        raise Exception(f"{cmd_text} failed with exit code {proc.returncode}, "
+                        f"expected exit code {exitcode}:\n"
+                        f"stdout={stdout!r}\n"
+                        f"stderr={stderr!r}")
+
+    return (stdout, stderr)
+
+
+def get_gdb_version():
+    try:
+        stdout, stderr = run_gdb('--version')
+    except OSError as exc:
+        # This is what "no gdb" looks like.  There may, however, be other
+        # errors that manifest this way too.
+        raise unittest.SkipTest(f"Couldn't find gdb program on the path: {exc}")
+
+    # Regex to parse:
+    # 'GNU gdb (GDB; SUSE Linux Enterprise 12) 7.7\n' -> 7.7
+    # 'GNU gdb (GDB) Fedora 7.9.1-17.fc22\n' -> 7.9
+    # 'GNU gdb 6.1.1 [FreeBSD]\n' -> 6.1
+    # 'GNU gdb (GDB) Fedora (7.5.1-37.fc18)\n' -> 7.5
+    # 'HP gdb 6.7 for HP Itanium (32 or 64 bit) and target HP-UX 11iv2 and 11iv3.\n' -> 6.7
+    match = re.search(r"^(?:GNU|HP) gdb.*?\b(\d+)\.(\d+)", stdout)
+    if match is None:
+        raise Exception("unable to parse gdb version: %r" % stdout)
+    version_text = stdout
+    major = int(match.group(1))
+    minor = int(match.group(2))
+    version = (major, minor)
+    return (version_text, version)
+
+GDB_VERSION_TEXT, GDB_VERSION = get_gdb_version()
+if GDB_VERSION < (7, 0):
+    raise unittest.SkipTest(
+        f"gdb versions before 7.0 didn't support python embedding. "
+        f"Saw gdb version {GDB_VERSION[0]}.{GDB_VERSION[1]}:\n"
+        f"{GDB_VERSION_TEXT}")
+
+
+def check_usable_gdb():
+    # Verify that "gdb" was built with the embedded Python support enabled and
+    # verify that "gdb" can load our custom hooks, as OS security settings may
+    # disallow this without a customized .gdbinit.
+    stdout, stderr = run_gdb(
+        '--eval-command=python import sys; print(sys.version_info)',
+        '--args', sys.executable,
+        check=False)
+
+    if "auto-loading has been declined" in stderr:
+        raise unittest.SkipTest(
+            f"gdb security settings prevent use of custom hooks; "
+            f"stderr: {stderr!r}")
+
+    if not stdout:
+        raise unittest.SkipTest(
+            f"gdb not built with embedded python support; "
+            f"stderr: {stderr!r}")
+
+    if "major=2" in stdout:
+        raise unittest.SkipTest("gdb built with Python 2")
+
+check_usable_gdb()
+
+
+# Control-flow enforcement technology
+def cet_protection():
+    cflags = sysconfig.get_config_var('CFLAGS')
+    if not cflags:
+        return False
+    flags = cflags.split()
+    # True if "-mcet -fcf-protection" options are found, but false
+    # if "-fcf-protection=none" or "-fcf-protection=return" is found.
+    return (('-mcet' in flags)
+            and any((flag.startswith('-fcf-protection')
+                     and not flag.endswith(("=none", "=return")))
+                    for flag in flags))
+CET_PROTECTION = cet_protection()
+
+
+def setup_module():
+    if support.verbose:
+        print(f"gdb version {GDB_VERSION[0]}.{GDB_VERSION[1]}:")
+        for line in GDB_VERSION_TEXT.splitlines():
+            print(" " * 4 + line)
+        print(f"    path: {GDB_PROGRAM}")
+        print()
+
+
+class DebuggerTests(unittest.TestCase):
+
+    """Test that the debugger can debug Python."""
+
+    def get_stack_trace(self, source=None, script=None,
+                        breakpoint=BREAKPOINT_FN,
+                        cmds_after_breakpoint=None,
+                        import_site=False,
+                        ignore_stderr=False):
+        '''
+        Run 'python -c SOURCE' under gdb with a breakpoint.
+
+        Support injecting commands after the breakpoint is reached
+
+        Returns the stdout from gdb
+
+        cmds_after_breakpoint: if provided, a list of strings: gdb commands
+        '''
+        # We use "set breakpoint pending yes" to avoid blocking with a:
+        #   Function "foo" not defined.
+        #   Make breakpoint pending on future shared library load? (y or [n])
+        # error, which typically happens python is dynamically linked (the
+        # breakpoints of interest are to be found in the shared library)
+        # When this happens, we still get:
+        #   Function "textiowrapper_write" not defined.
+        # emitted to stderr each time, alas.
+
+        # Initially I had "--eval-command=continue" here, but removed it to
+        # avoid repeated print breakpoints when traversing hierarchical data
+        # structures
+
+        # Generate a list of commands in gdb's language:
+        commands = [
+            'set breakpoint pending yes',
+            'break %s' % breakpoint,
+
+            # The tests assume that the first frame of printed
+            #  backtrace will not contain program counter,
+            #  that is however not guaranteed by gdb
+            #  therefore we need to use 'set print address off' to
+            #  make sure the counter is not there. For example:
+            # #0 in PyObject_Print ...
+            #  is assumed, but sometimes this can be e.g.
+            # #0 0x00003fffb7dd1798 in PyObject_Print ...
+            'set print address off',
+
+            'run',
+        ]
+
+        # GDB as of 7.4 onwards can distinguish between the
+        # value of a variable at entry vs current value:
+        #   http://sourceware.org/gdb/onlinedocs/gdb/Variables.html
+        # which leads to the selftests failing with errors like this:
+        #   AssertionError: 'v@entry=()' != '()'
+        # Disable this:
+        if GDB_VERSION >= (7, 4):
+            commands += ['set print entry-values no']
+
+        if cmds_after_breakpoint:
+            if CET_PROTECTION:
+                # bpo-32962: When Python is compiled with -mcet
+                # -fcf-protection, function arguments are unusable before
+                # running the first instruction of the function entry point.
+                # The 'next' command makes the required first step.
+                commands += ['next']
+            commands += cmds_after_breakpoint
+        else:
+            commands += ['backtrace']
+
+        # print commands
+
+        # Use "commands" to generate the arguments with which to invoke "gdb":
+        args = ['--eval-command=%s' % cmd for cmd in commands]
+        args += ["--args",
+                 sys.executable]
+        args.extend(subprocess._args_from_interpreter_flags())
+
+        if not import_site:
+            # -S suppresses the default 'import site'
+            args += ["-S"]
+
+        if source:
+            args += ["-c", source]
+        elif script:
+            args += [script]
+
+        # Use "args" to invoke gdb, capturing stdout, stderr:
+        out, err = run_gdb(*args, PYTHONHASHSEED=PYTHONHASHSEED)
+
+        if not ignore_stderr:
+            for line in err.splitlines():
+                print(line, file=sys.stderr)
+
+        # bpo-34007: Sometimes some versions of the shared libraries that
+        # are part of the traceback are compiled in optimised mode and the
+        # Program Counter (PC) is not present, not allowing gdb to walk the
+        # frames back. When this happens, the Python bindings of gdb raise
+        # an exception, making the test impossible to succeed.
+        if "PC not saved" in err:
+            raise unittest.SkipTest("gdb cannot walk the frame object"
+                                    " because the Program Counter is"
+                                    " not present")
+
+        # bpo-40019: Skip the test if gdb failed to read debug information
+        # because the Python binary is optimized.
+        for pattern in (
+            '(frame information optimized out)',
+            'Unable to read information on python frame',
+
+            # gh-91960: On Python built with "clang -Og", gdb gets
+            # "frame=<optimized out>" for _PyEval_EvalFrameDefault() parameter
+            '(unable to read python frame information)',
+
+            # gh-104736: On Python built with "clang -Og" on ppc64le,
+            # "py-bt" displays a truncated or not traceback, but "where"
+            # logs this error message:
+            'Backtrace stopped: frame did not save the PC',
+
+            # gh-104736: When "bt" command displays something like:
+            # "#1  0x0000000000000000 in ?? ()", the traceback is likely
+            # truncated or wrong.
+            ' ?? ()',
+        ):
+            if pattern in out:
+                raise unittest.SkipTest(f"{pattern!r} found in gdb output")
+
+        return out
+
+    def assertEndsWith(self, actual, exp_end):
+        '''Ensure that the given "actual" string ends with "exp_end"'''
+        self.assertTrue(actual.endswith(exp_end),
+                        msg='%r did not end with %r' % (actual, exp_end))
+
+    def assertMultilineMatches(self, actual, pattern):
+        m = re.match(pattern, actual, re.DOTALL)
+        if not m:
+            self.fail(msg='%r did not match %r' % (actual, pattern))
diff --git a/Lib/test/test_generated_cases.py b/Lib/test/test_generated_cases.py
new file mode 100644
index 00000000000000..de96a8764594ba
--- /dev/null
+++ b/Lib/test/test_generated_cases.py
@@ -0,0 +1,793 @@
+import contextlib
+import os
+import sys
+import tempfile
+import unittest
+
+from test import support
+from test import test_tools
+
+
+def skip_if_different_mount_drives():
+    if sys.platform != 'win32':
+        return
+    ROOT = os.path.dirname(os.path.dirname(__file__))
+    root_drive = os.path.splitroot(ROOT)[0]
+    cwd_drive = os.path.splitroot(os.getcwd())[0]
+    if root_drive != cwd_drive:
+        # generate_cases.py uses relpath() which raises ValueError if ROOT
+        # and the current working different have different mount drives
+        # (on Windows).
+        raise unittest.SkipTest(
+            f"the current working directory and the Python source code "
+            f"directory have different mount drives "
+            f"({cwd_drive} and {root_drive})"
+        )
+skip_if_different_mount_drives()
+
+
+test_tools.skip_if_missing('cases_generator')
+with test_tools.imports_under_tool('cases_generator'):
+    import generate_cases
+    import analysis
+    import formatting
+    from parsing import StackEffect
+
+
+def handle_stderr():
+    if support.verbose > 1:
+        return contextlib.nullcontext()
+    else:
+        return support.captured_stderr()
+
+class TestEffects(unittest.TestCase):
+    def test_effect_sizes(self):
+        input_effects = [
+            x := StackEffect("x", "", "", ""),
+            y := StackEffect("y", "", "", "oparg"),
+            z := StackEffect("z", "", "", "oparg*2"),
+        ]
+        output_effects = [
+            StackEffect("a", "", "", ""),
+            StackEffect("b", "", "", "oparg*4"),
+            StackEffect("c", "", "", ""),
+        ]
+        other_effects = [
+            StackEffect("p", "", "", "oparg<<1"),
+            StackEffect("q", "", "", ""),
+            StackEffect("r", "", "", ""),
+        ]
+        self.assertEqual(formatting.effect_size(x), (1, ""))
+        self.assertEqual(formatting.effect_size(y), (0, "oparg"))
+        self.assertEqual(formatting.effect_size(z), (0, "oparg*2"))
+
+        self.assertEqual(
+            formatting.list_effect_size(input_effects),
+            (1, "oparg + oparg*2"),
+        )
+        self.assertEqual(
+            formatting.list_effect_size(output_effects),
+            (2, "oparg*4"),
+        )
+        self.assertEqual(
+            formatting.list_effect_size(other_effects),
+            (2, "(oparg<<1)"),
+        )
+
+
+class TestGeneratedCases(unittest.TestCase):
+    def setUp(self) -> None:
+        super().setUp()
+        self.maxDiff = None
+
+        self.temp_dir = tempfile.gettempdir()
+        self.temp_input_filename = os.path.join(self.temp_dir, "input.txt")
+        self.temp_output_filename = os.path.join(self.temp_dir, "output.txt")
+        self.temp_metadata_filename = os.path.join(self.temp_dir, "metadata.txt")
+        self.temp_pymetadata_filename = os.path.join(self.temp_dir, "pymetadata.txt")
+        self.temp_executor_filename = os.path.join(self.temp_dir, "executor.txt")
+
+    def tearDown(self) -> None:
+        for filename in [
+            self.temp_input_filename,
+            self.temp_output_filename,
+            self.temp_metadata_filename,
+            self.temp_pymetadata_filename,
+            self.temp_executor_filename,
+        ]:
+            try:
+                os.remove(filename)
+            except:
+                pass
+        super().tearDown()
+
+    def run_cases_test(self, input: str, expected: str):
+        with open(self.temp_input_filename, "w+") as temp_input:
+            temp_input.write(analysis.BEGIN_MARKER)
+            temp_input.write(input)
+            temp_input.write(analysis.END_MARKER)
+            temp_input.flush()
+
+        a = generate_cases.Generator([self.temp_input_filename])
+        with handle_stderr():
+            a.parse()
+            a.analyze()
+            if a.errors:
+                raise RuntimeError(f"Found {a.errors} errors")
+            a.write_instructions(self.temp_output_filename, False)
+
+        with open(self.temp_output_filename) as temp_output:
+            lines = temp_output.readlines()
+            while lines and lines[0].startswith(("// ", "#", "    #", "\n")):
+                lines.pop(0)
+            while lines and lines[-1].startswith(("#", "\n")):
+                lines.pop(-1)
+        actual = "".join(lines)
+        # if actual.strip() != expected.strip():
+        #     print("Actual:")
+        #     print(actual)
+        #     print("Expected:")
+        #     print(expected)
+        #     print("End")
+
+        self.assertEqual(actual.strip(), expected.strip())
+
+    def test_inst_no_args(self):
+        input = """
+        inst(OP, (--)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            spam();
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_inst_one_pop(self):
+        input = """
+        inst(OP, (value --)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *value;
+            value = stack_pointer[-1];
+            spam();
+            STACK_SHRINK(1);
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_inst_one_push(self):
+        input = """
+        inst(OP, (-- res)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *res;
+            spam();
+            STACK_GROW(1);
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_inst_one_push_one_pop(self):
+        input = """
+        inst(OP, (value -- res)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            spam();
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_binary_op(self):
+        input = """
+        inst(OP, (left, right -- res)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            spam();
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_overlap(self):
+        input = """
+        inst(OP, (left, right -- left, result)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *right;
+            PyObject *left;
+            PyObject *result;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            spam();
+            stack_pointer[-1] = result;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_predictions_and_eval_breaker(self):
+        input = """
+        inst(OP1, (arg -- rest)) {
+        }
+        inst(OP3, (arg -- res)) {
+            DEOPT_IF(xxx);
+            CHECK_EVAL_BREAKER();
+        }
+        family(OP1, INLINE_CACHE_ENTRIES_OP1) = { OP3 };
+    """
+        output = """
+        TARGET(OP1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP1);
+            PREDICTED(OP1);
+            static_assert(INLINE_CACHE_ENTRIES_OP1 == 0, "incorrect cache size");
+            PyObject *arg;
+            PyObject *rest;
+            arg = stack_pointer[-1];
+            stack_pointer[-1] = rest;
+            DISPATCH();
+        }
+
+        TARGET(OP3) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP3);
+            PyObject *arg;
+            PyObject *res;
+            arg = stack_pointer[-1];
+            DEOPT_IF(xxx, OP1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_error_if_plain(self):
+        input = """
+        inst(OP, (--)) {
+            ERROR_IF(cond, label);
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            if (cond) goto label;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_error_if_plain_with_comment(self):
+        input = """
+        inst(OP, (--)) {
+            ERROR_IF(cond, label);  // Comment is ok
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            if (cond) goto label;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_error_if_pop(self):
+        input = """
+        inst(OP, (left, right -- res)) {
+            ERROR_IF(cond, label);
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            if (cond) goto pop_2_label;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_cache_effect(self):
+        input = """
+        inst(OP, (counter/1, extra/2, value --)) {
+        }
+    """
+        output = """
+        TARGET(OP) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(OP);
+            PyObject *value;
+            value = stack_pointer[-1];
+            uint16_t counter = read_u16(&this_instr[1].cache);
+            uint32_t extra = read_u32(&this_instr[2].cache);
+            STACK_SHRINK(1);
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_suppress_dispatch(self):
+        input = """
+        inst(OP, (--)) {
+            goto somewhere;
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            goto somewhere;
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_macro_instruction(self):
+        input = """
+        inst(OP1, (counter/1, left, right -- left, right)) {
+            op1(left, right);
+        }
+        op(OP2, (extra/2, arg2, left, right -- res)) {
+            res = op2(arg2, left, right);
+        }
+        macro(OP) = OP1 + cache/2 + OP2;
+        inst(OP3, (unused/5, arg2, left, right -- res)) {
+            res = op3(arg2, left, right);
+        }
+        family(OP, INLINE_CACHE_ENTRIES_OP) = { OP3 };
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 6;
+            INSTRUCTION_STATS(OP);
+            PREDICTED(OP);
+            _Py_CODEUNIT *this_instr = next_instr - 6;
+            static_assert(INLINE_CACHE_ENTRIES_OP == 5, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *arg2;
+            PyObject *res;
+            // OP1
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                op1(left, right);
+            }
+            // OP2
+            arg2 = stack_pointer[-3];
+            {
+                uint32_t extra = read_u32(&this_instr[4].cache);
+                res = op2(arg2, left, right);
+            }
+            STACK_SHRINK(2);
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+
+        TARGET(OP1) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(OP1);
+            PyObject *right;
+            PyObject *left;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            uint16_t counter = read_u16(&this_instr[1].cache);
+            op1(left, right);
+            DISPATCH();
+        }
+
+        TARGET(OP3) {
+            frame->instr_ptr = next_instr;
+            next_instr += 6;
+            INSTRUCTION_STATS(OP3);
+            PyObject *right;
+            PyObject *left;
+            PyObject *arg2;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            arg2 = stack_pointer[-3];
+            res = op3(arg2, left, right);
+            STACK_SHRINK(2);
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_pseudo_instruction_no_flags(self):
+        input = """
+        pseudo(OP) = {
+            OP1,
+        };
+
+        inst(OP1, (--)) {
+        }
+    """
+        output = """
+        TARGET(OP1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP1);
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_pseudo_instruction_with_flags(self):
+        input = """
+        pseudo(OP, (HAS_ARG, HAS_JUMP)) = {
+            OP1,
+        };
+
+        inst(OP1, (--)) {
+        }
+    """
+        output = """
+        TARGET(OP1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP1);
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_array_input(self):
+        input = """
+        inst(OP, (below, values[oparg*2], above --)) {
+            spam();
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *above;
+            PyObject **values;
+            PyObject *below;
+            above = stack_pointer[-1];
+            values = stack_pointer - 1 - oparg*2;
+            below = stack_pointer[-2 - oparg*2];
+            spam();
+            STACK_SHRINK(oparg*2);
+            STACK_SHRINK(2);
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_array_output(self):
+        input = """
+        inst(OP, (unused, unused -- below, values[oparg*3], above)) {
+            spam(values, oparg);
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *below;
+            PyObject **values;
+            PyObject *above;
+            values = stack_pointer - 1;
+            spam(values, oparg);
+            STACK_GROW(oparg*3);
+            stack_pointer[-2 - oparg*3] = below;
+            stack_pointer[-1] = above;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_array_input_output(self):
+        input = """
+        inst(OP, (values[oparg] -- values[oparg], above)) {
+            spam(values, oparg);
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject **values;
+            PyObject *above;
+            values = stack_pointer - oparg;
+            spam(values, oparg);
+            STACK_GROW(1);
+            stack_pointer[-1] = above;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_array_error_if(self):
+        input = """
+        inst(OP, (extra, values[oparg] --)) {
+            ERROR_IF(oparg == 0, somewhere);
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject **values;
+            PyObject *extra;
+            values = stack_pointer - oparg;
+            extra = stack_pointer[-1 - oparg];
+            if (oparg == 0) { STACK_SHRINK(oparg); goto pop_1_somewhere; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_cond_effect(self):
+        input = """
+        inst(OP, (aa, input if ((oparg & 1) == 1), cc -- xx, output if (oparg & 2), zz)) {
+            output = spam(oparg, input);
+        }
+    """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            PyObject *cc;
+            PyObject *input = NULL;
+            PyObject *aa;
+            PyObject *xx;
+            PyObject *output = NULL;
+            PyObject *zz;
+            cc = stack_pointer[-1];
+            if ((oparg & 1) == 1) { input = stack_pointer[-1 - ((oparg & 1) == 1 ? 1 : 0)]; }
+            aa = stack_pointer[-2 - ((oparg & 1) == 1 ? 1 : 0)];
+            output = spam(oparg, input);
+            STACK_SHRINK((((oparg & 1) == 1) ? 1 : 0));
+            STACK_GROW(((oparg & 2) ? 1 : 0));
+            stack_pointer[-2 - (oparg & 2 ? 1 : 0)] = xx;
+            if (oparg & 2) { stack_pointer[-1 - (oparg & 2 ? 1 : 0)] = output; }
+            stack_pointer[-1] = zz;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_macro_cond_effect(self):
+        input = """
+        op(A, (left, middle, right --)) {
+            # Body of A
+        }
+        op(B, (-- deep, extra if (oparg), res)) {
+            # Body of B
+        }
+        macro(M) = A + B;
+    """
+        output = """
+        TARGET(M) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(M);
+            PyObject *right;
+            PyObject *middle;
+            PyObject *left;
+            PyObject *deep;
+            PyObject *extra = NULL;
+            PyObject *res;
+            // A
+            right = stack_pointer[-1];
+            middle = stack_pointer[-2];
+            left = stack_pointer[-3];
+            {
+                # Body of A
+            }
+            // B
+            {
+                # Body of B
+            }
+            STACK_SHRINK(1);
+            STACK_GROW((oparg ? 1 : 0));
+            stack_pointer[-2 - (oparg ? 1 : 0)] = deep;
+            if (oparg) { stack_pointer[-1 - (oparg ? 1 : 0)] = extra; }
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+    """
+        self.run_cases_test(input, output)
+
+    def test_macro_push_push(self):
+        input = """
+        op(A, (-- val1)) {
+            val1 = spam();
+        }
+        op(B, (-- val2)) {
+            val2 = spam();
+        }
+        macro(M) = A + B;
+        """
+        output = """
+        TARGET(M) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(M);
+            PyObject *val1;
+            PyObject *val2;
+            // A
+            {
+                val1 = spam();
+            }
+            // B
+            {
+                val2 = spam();
+            }
+            STACK_GROW(2);
+            stack_pointer[-2] = val1;
+            stack_pointer[-1] = val2;
+            DISPATCH();
+        }
+        """
+        self.run_cases_test(input, output)
+
+    def test_override_inst(self):
+        input = """
+        inst(OP, (--)) {
+            spam();
+        }
+        override inst(OP, (--)) {
+            ham();
+        }
+        """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            ham();
+            DISPATCH();
+        }
+        """
+        self.run_cases_test(input, output)
+
+    def test_override_op(self):
+        input = """
+        op(OP, (--)) {
+            spam();
+        }
+        macro(M) = OP;
+        override op(OP, (--)) {
+            ham();
+        }
+        """
+        output = """
+        TARGET(M) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(M);
+            ham();
+            DISPATCH();
+        }
+        """
+        self.run_cases_test(input, output)
+
+    def test_annotated_inst(self):
+        input = """
+        guard inst(OP, (--)) {
+            ham();
+        }
+        """
+        output = """
+        TARGET(OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(OP);
+            ham();
+            DISPATCH();
+        }
+        """
+        self.run_cases_test(input, output)
+
+    def test_annotated_op(self):
+        input = """
+        guard op(OP, (--)) {
+            spam();
+        }
+        macro(M) = OP;
+        """
+        output = """
+        TARGET(M) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(M);
+            spam();
+            DISPATCH();
+        }
+        """
+        self.run_cases_test(input, output)
+
+        input = """
+        guard register specializing op(OP, (--)) {
+            spam();
+        }
+        macro(M) = OP;
+        """
+        self.run_cases_test(input, output)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_generators.py b/Lib/test/test_generators.py
index 31680b5a92e0f3..d48f0d47ba1962 100644
--- a/Lib/test/test_generators.py
+++ b/Lib/test/test_generators.py
@@ -451,6 +451,88 @@ def g():
         self.assertEqual(cm.exception.value.value, 2)
 
 
+class GeneratorCloseTest(unittest.TestCase):
+
+    def test_close_no_return_value(self):
+        def f():
+            yield
+
+        gen = f()
+        gen.send(None)
+        self.assertIsNone(gen.close())
+
+    def test_close_return_value(self):
+        def f():
+            try:
+                yield
+                # close() raises GeneratorExit here, which is caught
+            except GeneratorExit:
+                return 0
+
+        gen = f()
+        gen.send(None)
+        self.assertEqual(gen.close(), 0)
+
+    def test_close_not_catching_exit(self):
+        def f():
+            yield
+            # close() raises GeneratorExit here, which isn't caught and
+            # therefore propagates -- no return value
+            return 0
+
+        gen = f()
+        gen.send(None)
+        self.assertIsNone(gen.close())
+
+    def test_close_not_started(self):
+        def f():
+            try:
+                yield
+            except GeneratorExit:
+                return 0
+
+        gen = f()
+        self.assertIsNone(gen.close())
+
+    def test_close_exhausted(self):
+        def f():
+            try:
+                yield
+            except GeneratorExit:
+                return 0
+
+        gen = f()
+        next(gen)
+        with self.assertRaises(StopIteration):
+            next(gen)
+        self.assertIsNone(gen.close())
+
+    def test_close_closed(self):
+        def f():
+            try:
+                yield
+            except GeneratorExit:
+                return 0
+
+        gen = f()
+        gen.send(None)
+        self.assertEqual(gen.close(), 0)
+        self.assertIsNone(gen.close())
+
+    def test_close_raises(self):
+        def f():
+            try:
+                yield
+            except GeneratorExit:
+                pass
+            raise RuntimeError
+
+        gen = f()
+        gen.send(None)
+        with self.assertRaises(RuntimeError):
+            gen.close()
+
+
 class GeneratorThrowTest(unittest.TestCase):
 
     def test_exception_context_with_yield(self):
@@ -2176,6 +2258,7 @@ def printsolution(self, x):
 caught ValueError (xyz)
 
 >>> import warnings
+>>> old_filters = warnings.filters.copy()
 >>> warnings.filterwarnings("ignore", category=DeprecationWarning)
 
 # Filter DeprecationWarning: regarding the (type, val, tb) signature of throw().
@@ -2249,8 +2332,7 @@ def printsolution(self, x):
   ...
 ValueError: 7
 
->>> warnings.filters.pop(0)
-('ignore', None, <class 'DeprecationWarning'>, None, 0)
+>>> warnings.filters[:] = old_filters
 
 # Re-enable DeprecationWarning: the (type, val, tb) exception representation is deprecated,
 #                               and may be removed in a future version of Python.
diff --git a/Lib/test/test_genericalias.py b/Lib/test/test_genericalias.py
index 24d4216417521c..04cb810d9babbf 100644
--- a/Lib/test/test_genericalias.py
+++ b/Lib/test/test_genericalias.py
@@ -28,7 +28,7 @@
 from itertools import chain
 from http.cookies import Morsel
 try:
-    from multiprocessing.managers import ValueProxy
+    from multiprocessing.managers import ValueProxy, DictProxy, ListProxy
     from multiprocessing.pool import ApplyResult
     from multiprocessing.queues import SimpleQueue as MPSimpleQueue
     from multiprocessing.queues import Queue as MPQueue
@@ -36,6 +36,8 @@
 except ImportError:
     # _multiprocessing module is optional
     ValueProxy = None
+    DictProxy = None
+    ListProxy = None
     ApplyResult = None
     MPSimpleQueue = None
     MPQueue = None
@@ -134,7 +136,7 @@ class BaseTest(unittest.TestCase):
     if ctypes is not None:
         generic_types.extend((ctypes.Array, ctypes.LibraryLoader))
     if ValueProxy is not None:
-        generic_types.extend((ValueProxy, ApplyResult,
+        generic_types.extend((ValueProxy, DictProxy, ListProxy, ApplyResult,
                               MPSimpleQueue, MPQueue, MPJoinableQueue))
 
     def test_subscriptable(self):
@@ -209,6 +211,9 @@ class MyList(list):
     def test_repr(self):
         class MyList(list):
             pass
+        class MyGeneric:
+            __class_getitem__ = classmethod(GenericAlias)
+
         self.assertEqual(repr(list[str]), 'list[str]')
         self.assertEqual(repr(list[()]), 'list[()]')
         self.assertEqual(repr(tuple[int, ...]), 'tuple[int, ...]')
@@ -221,6 +226,11 @@ class MyList(list):
         self.assertTrue(repr(MyList[int]).endswith('.BaseTest.test_repr.<locals>.MyList[int]'))
         self.assertEqual(repr(list[str]()), '[]')  # instances should keep their normal repr
 
+        # gh-105488
+        self.assertTrue(repr(MyGeneric[int]).endswith('MyGeneric[int]'))
+        self.assertTrue(repr(MyGeneric[[]]).endswith('MyGeneric[[]]'))
+        self.assertTrue(repr(MyGeneric[[int, str]]).endswith('MyGeneric[[int, str]]'))
+
     def test_exposed_type(self):
         import types
         a = types.GenericAlias(list, int)
diff --git a/Lib/test/test_genericclass.py b/Lib/test/test_genericclass.py
index d8bb37f69e18a1..aece757fc1933e 100644
--- a/Lib/test/test_genericclass.py
+++ b/Lib/test/test_genericclass.py
@@ -98,7 +98,7 @@ def __mro_entries__(self):
                 return ()
         d = C_too_few()
         with self.assertRaises(TypeError):
-            class D(d): ...
+            class E(d): ...
 
     def test_mro_entry_errors_2(self):
         class C_not_callable:
@@ -111,7 +111,7 @@ def __mro_entries__(self):
                 return object
         c = C_not_tuple()
         with self.assertRaises(TypeError):
-            class D(c): ...
+            class E(c): ...
 
     def test_mro_entry_metaclass(self):
         meta_args = []
diff --git a/Lib/test/test_genericpath.py b/Lib/test/test_genericpath.py
index 489044f8090d3b..4f311c2d498e9f 100644
--- a/Lib/test/test_genericpath.py
+++ b/Lib/test/test_genericpath.py
@@ -460,6 +460,10 @@ def test_normpath_issue5827(self):
         for path in ('', '.', '/', '\\', '///foo/.//bar//'):
             self.assertIsInstance(self.pathmodule.normpath(path), str)
 
+    def test_normpath_issue106242(self):
+        for path in ('\x00', 'foo\x00bar', '\x00\x00', '\x00foo', 'foo\x00'):
+            self.assertEqual(self.pathmodule.normpath(path), path)
+
     def test_abspath_issue3426(self):
         # Check that abspath returns unicode when the arg is unicode
         # with both ASCII and non-ASCII cwds.
diff --git a/Lib/test/test_getopt.py b/Lib/test/test_getopt.py
index c96a33b77fe272..c8b3442de4aa77 100644
--- a/Lib/test/test_getopt.py
+++ b/Lib/test/test_getopt.py
@@ -1,8 +1,8 @@
 # test_getopt.py
 # David Goodger <dgoodger@bigfoot.com> 2000-08-19
 
-from test.support import verbose, run_doctest
 from test.support.os_helper import EnvironmentVarGuard
+import doctest
 import unittest
 
 import getopt
@@ -134,48 +134,49 @@ def test_gnu_getopt(self):
         self.assertEqual(opts, [('-a', '')])
         self.assertEqual(args, ['arg1', '-b', '1', '--alpha', '--beta=2'])
 
-    def test_libref_examples(self):
-        s = """
-        Examples from the Library Reference:  Doc/lib/libgetopt.tex
+    def test_issue4629(self):
+        longopts, shortopts = getopt.getopt(['--help='], '', ['help='])
+        self.assertEqual(longopts, [('--help', '')])
+        longopts, shortopts = getopt.getopt(['--help=x'], '', ['help='])
+        self.assertEqual(longopts, [('--help', 'x')])
+        self.assertRaises(getopt.GetoptError, getopt.getopt, ['--help='], '', ['help'])
 
-        An example using only Unix style options:
+def test_libref_examples():
+    """
+    Examples from the Library Reference:  Doc/lib/libgetopt.tex
 
+    An example using only Unix style options:
 
-        >>> import getopt
-        >>> args = '-a -b -cfoo -d bar a1 a2'.split()
-        >>> args
-        ['-a', '-b', '-cfoo', '-d', 'bar', 'a1', 'a2']
-        >>> optlist, args = getopt.getopt(args, 'abc:d:')
-        >>> optlist
-        [('-a', ''), ('-b', ''), ('-c', 'foo'), ('-d', 'bar')]
-        >>> args
-        ['a1', 'a2']
 
-        Using long option names is equally easy:
+    >>> import getopt
+    >>> args = '-a -b -cfoo -d bar a1 a2'.split()
+    >>> args
+    ['-a', '-b', '-cfoo', '-d', 'bar', 'a1', 'a2']
+    >>> optlist, args = getopt.getopt(args, 'abc:d:')
+    >>> optlist
+    [('-a', ''), ('-b', ''), ('-c', 'foo'), ('-d', 'bar')]
+    >>> args
+    ['a1', 'a2']
 
+    Using long option names is equally easy:
 
-        >>> s = '--condition=foo --testing --output-file abc.def -x a1 a2'
-        >>> args = s.split()
-        >>> args
-        ['--condition=foo', '--testing', '--output-file', 'abc.def', '-x', 'a1', 'a2']
-        >>> optlist, args = getopt.getopt(args, 'x', [
-        ...     'condition=', 'output-file=', 'testing'])
-        >>> optlist
-        [('--condition', 'foo'), ('--testing', ''), ('--output-file', 'abc.def'), ('-x', '')]
-        >>> args
-        ['a1', 'a2']
-        """
 
-        import types
-        m = types.ModuleType("libreftest", s)
-        run_doctest(m, verbose)
+    >>> s = '--condition=foo --testing --output-file abc.def -x a1 a2'
+    >>> args = s.split()
+    >>> args
+    ['--condition=foo', '--testing', '--output-file', 'abc.def', '-x', 'a1', 'a2']
+    >>> optlist, args = getopt.getopt(args, 'x', [
+    ...     'condition=', 'output-file=', 'testing'])
+    >>> optlist
+    [('--condition', 'foo'), ('--testing', ''), ('--output-file', 'abc.def'), ('-x', '')]
+    >>> args
+    ['a1', 'a2']
+    """
+
+def load_tests(loader, tests, pattern):
+    tests.addTest(doctest.DocTestSuite())
+    return tests
 
-    def test_issue4629(self):
-        longopts, shortopts = getopt.getopt(['--help='], '', ['help='])
-        self.assertEqual(longopts, [('--help', '')])
-        longopts, shortopts = getopt.getopt(['--help=x'], '', ['help='])
-        self.assertEqual(longopts, [('--help', 'x')])
-        self.assertRaises(getopt.GetoptError, getopt.getopt, ['--help='], '', ['help'])
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_getpass.py b/Lib/test/test_getpass.py
index 98ecec94336e32..80dda2caaa3331 100644
--- a/Lib/test/test_getpass.py
+++ b/Lib/test/test_getpass.py
@@ -26,7 +26,7 @@ def test_username_priorities_of_env_values(self, environ):
         environ.get.return_value = None
         try:
             getpass.getuser()
-        except ImportError: # in case there's no pwd module
+        except OSError:  # in case there's no pwd module
             pass
         except KeyError:
             # current user has no pwd entry
@@ -47,7 +47,7 @@ def test_username_falls_back_to_pwd(self, environ):
                                  getpass.getuser())
                 getpw.assert_called_once_with(42)
         else:
-            self.assertRaises(ImportError, getpass.getuser)
+            self.assertRaises(OSError, getpass.getuser)
 
 
 class GetpassRawinputTest(unittest.TestCase):
diff --git a/Lib/test/test_getpath.py b/Lib/test/test_getpath.py
index b9cbe1d92c436f..2f7aa69efc184a 100644
--- a/Lib/test/test_getpath.py
+++ b/Lib/test/test_getpath.py
@@ -818,6 +818,20 @@ def test_symlink_buildpath_macos(self):
         actual = getpath(ns, expected)
         self.assertEqual(expected, actual)
 
+    def test_explicitly_set_stdlib_dir(self):
+        """Test the explicitly set stdlib_dir in the config is respected."""
+        ns = MockPosixNamespace(
+            PREFIX="/usr",
+            argv0="python",
+            ENV_PATH="/usr/bin",
+        )
+        ns["config"]["stdlib_dir"] = "/custom_stdlib_dir"
+        expected = dict(
+            stdlib_dir="/custom_stdlib_dir",
+        )
+        actual = getpath(ns, expected)
+        self.assertEqual(expected, actual)
+
 
 # ******************************************************************************
 
diff --git a/Lib/test/test_gettext.py b/Lib/test/test_gettext.py
index 1608d1b18e98fb..b2fe3e28c3bec7 100644
--- a/Lib/test/test_gettext.py
+++ b/Lib/test/test_gettext.py
@@ -2,6 +2,7 @@
 import base64
 import gettext
 import unittest
+from functools import partial
 
 from test import support
 from test.support import os_helper
@@ -115,9 +116,16 @@
 MMOFILE = os.path.join(LOCALEDIR, 'metadata.mo')
 
 
+def reset_gettext():
+    gettext._localedirs.clear()
+    gettext._current_domain = 'messages'
+    gettext._translations.clear()
+
+
 class GettextBaseTest(unittest.TestCase):
-    def setUp(self):
-        self.addCleanup(os_helper.rmtree, os.path.split(LOCALEDIR)[0])
+    @classmethod
+    def setUpClass(cls):
+        cls.addClassCleanup(os_helper.rmtree, os.path.split(LOCALEDIR)[0])
         if not os.path.isdir(LOCALEDIR):
             os.makedirs(LOCALEDIR)
         with open(MOFILE, 'wb') as fp:
@@ -130,9 +138,12 @@ def setUp(self):
             fp.write(base64.decodebytes(UMO_DATA))
         with open(MMOFILE, 'wb') as fp:
             fp.write(base64.decodebytes(MMO_DATA))
+
+    def setUp(self):
         self.env = self.enterContext(os_helper.EnvironmentVarGuard())
         self.env['LANGUAGE'] = 'xx'
-        gettext._translations.clear()
+        reset_gettext()
+        self.addCleanup(reset_gettext)
 
 
 GNU_MO_DATA_ISSUE_17898 = b'''\
@@ -309,47 +320,139 @@ def test_multiline_strings(self):
 trggrkg zrffntr pngnybt yvoenel.''')
 
 
-class PluralFormsTestCase(GettextBaseTest):
+class PluralFormsTests:
+
+    def _test_plural_forms(self, ngettext, gettext,
+                           singular, plural, tsingular, tplural,
+                           numbers_only=True):
+        x = ngettext(singular, plural, 1)
+        self.assertEqual(x, tsingular)
+        x = ngettext(singular, plural, 2)
+        self.assertEqual(x, tplural)
+        x = gettext(singular)
+        self.assertEqual(x, tsingular)
+
+        lineno = self._test_plural_forms.__code__.co_firstlineno + 12
+        with self.assertWarns(DeprecationWarning) as cm:
+            x = ngettext(singular, plural, 1.0)
+        self.assertEqual(cm.filename, __file__)
+        self.assertEqual(cm.lineno, lineno)
+        self.assertEqual(x, tsingular)
+        with self.assertWarns(DeprecationWarning) as cm:
+            x = ngettext(singular, plural, 1.1)
+        self.assertEqual(cm.filename, __file__)
+        self.assertEqual(cm.lineno, lineno + 5)
+        self.assertEqual(x, tplural)
+
+        if numbers_only:
+            with self.assertRaises(TypeError):
+                ngettext(singular, plural, None)
+        else:
+            with self.assertWarns(DeprecationWarning) as cm:
+                x = ngettext(singular, plural, None)
+            self.assertEqual(x, tplural)
+
+    def test_plural_forms(self):
+        self._test_plural_forms(
+            self.ngettext, self.gettext,
+            'There is %s file', 'There are %s files',
+            'Hay %s fichero', 'Hay %s ficheros')
+        self._test_plural_forms(
+            self.ngettext, self.gettext,
+            '%d file deleted', '%d files deleted',
+            '%d file deleted', '%d files deleted')
+
+    def test_plural_context_forms(self):
+        ngettext = partial(self.npgettext, 'With context')
+        gettext = partial(self.pgettext, 'With context')
+        self._test_plural_forms(
+            ngettext, gettext,
+            'There is %s file', 'There are %s files',
+            'Hay %s fichero (context)', 'Hay %s ficheros (context)')
+        self._test_plural_forms(
+            ngettext, gettext,
+            '%d file deleted', '%d files deleted',
+            '%d file deleted', '%d files deleted')
+
+    def test_plural_wrong_context_forms(self):
+        self._test_plural_forms(
+            partial(self.npgettext, 'Unknown context'),
+            partial(self.pgettext, 'Unknown context'),
+            'There is %s file', 'There are %s files',
+            'There is %s file', 'There are %s files')
+
+
+class GNUTranslationsPluralFormsTestCase(PluralFormsTests, GettextBaseTest):
     def setUp(self):
         GettextBaseTest.setUp(self)
-        self.mofile = MOFILE
+        # Set up the bindings
+        gettext.bindtextdomain('gettext', os.curdir)
+        gettext.textdomain('gettext')
 
-    def test_plural_forms1(self):
-        eq = self.assertEqual
-        x = gettext.ngettext('There is %s file', 'There are %s files', 1)
-        eq(x, 'Hay %s fichero')
-        x = gettext.ngettext('There is %s file', 'There are %s files', 2)
-        eq(x, 'Hay %s ficheros')
+        self.gettext = gettext.gettext
+        self.ngettext = gettext.ngettext
+        self.pgettext = gettext.pgettext
+        self.npgettext = gettext.npgettext
 
-    def test_plural_context_forms1(self):
-        eq = self.assertEqual
-        x = gettext.npgettext('With context',
-                              'There is %s file', 'There are %s files', 1)
-        eq(x, 'Hay %s fichero (context)')
-        x = gettext.npgettext('With context',
-                              'There is %s file', 'There are %s files', 2)
-        eq(x, 'Hay %s ficheros (context)')
-
-    def test_plural_forms2(self):
-        eq = self.assertEqual
-        with open(self.mofile, 'rb') as fp:
-            t = gettext.GNUTranslations(fp)
-        x = t.ngettext('There is %s file', 'There are %s files', 1)
-        eq(x, 'Hay %s fichero')
-        x = t.ngettext('There is %s file', 'There are %s files', 2)
-        eq(x, 'Hay %s ficheros')
 
-    def test_plural_context_forms2(self):
-        eq = self.assertEqual
-        with open(self.mofile, 'rb') as fp:
+class GNUTranslationsWithDomainPluralFormsTestCase(PluralFormsTests, GettextBaseTest):
+    def setUp(self):
+        GettextBaseTest.setUp(self)
+        # Set up the bindings
+        gettext.bindtextdomain('gettext', os.curdir)
+
+        self.gettext = partial(gettext.dgettext, 'gettext')
+        self.ngettext = partial(gettext.dngettext, 'gettext')
+        self.pgettext = partial(gettext.dpgettext, 'gettext')
+        self.npgettext = partial(gettext.dnpgettext, 'gettext')
+
+    def test_plural_forms_wrong_domain(self):
+        self._test_plural_forms(
+            partial(gettext.dngettext, 'unknown'),
+            partial(gettext.dgettext, 'unknown'),
+            'There is %s file', 'There are %s files',
+            'There is %s file', 'There are %s files',
+            numbers_only=False)
+
+    def test_plural_context_forms_wrong_domain(self):
+        self._test_plural_forms(
+            partial(gettext.dnpgettext, 'unknown', 'With context'),
+            partial(gettext.dpgettext, 'unknown', 'With context'),
+            'There is %s file', 'There are %s files',
+            'There is %s file', 'There are %s files',
+            numbers_only=False)
+
+
+class GNUTranslationsClassPluralFormsTestCase(PluralFormsTests, GettextBaseTest):
+    def setUp(self):
+        GettextBaseTest.setUp(self)
+        with open(MOFILE, 'rb') as fp:
             t = gettext.GNUTranslations(fp)
-        x = t.npgettext('With context',
-                        'There is %s file', 'There are %s files', 1)
-        eq(x, 'Hay %s fichero (context)')
-        x = t.npgettext('With context',
-                        'There is %s file', 'There are %s files', 2)
-        eq(x, 'Hay %s ficheros (context)')
 
+        self.gettext = t.gettext
+        self.ngettext = t.ngettext
+        self.pgettext = t.pgettext
+        self.npgettext = t.npgettext
+
+    def test_plural_forms_null_translations(self):
+        t = gettext.NullTranslations()
+        self._test_plural_forms(
+            t.ngettext, t.gettext,
+            'There is %s file', 'There are %s files',
+            'There is %s file', 'There are %s files',
+            numbers_only=False)
+
+    def test_plural_context_forms_null_translations(self):
+        t = gettext.NullTranslations()
+        self._test_plural_forms(
+            partial(t.npgettext, 'With context'),
+            partial(t.pgettext, 'With context'),
+            'There is %s file', 'There are %s files',
+            'There is %s file', 'There are %s files',
+            numbers_only=False)
+
+
+class PluralFormsInternalTestCase:
     # Examples from http://www.gnu.org/software/gettext/manual/gettext.html
 
     def test_ja(self):
diff --git a/Lib/test/test_glob.py b/Lib/test/test_glob.py
index f4b5821f408cb4..aa5fac8eca1354 100644
--- a/Lib/test/test_glob.py
+++ b/Lib/test/test_glob.py
@@ -1,5 +1,6 @@
 import glob
 import os
+import re
 import shutil
 import sys
 import unittest
@@ -349,6 +350,96 @@ def test_glob_many_open_files(self):
             for it in iters:
                 self.assertEqual(next(it), p)
 
+    def test_translate_matching(self):
+        match = re.compile(glob.translate('*')).match
+        self.assertIsNotNone(match('foo'))
+        self.assertIsNotNone(match('foo.bar'))
+        self.assertIsNone(match('.foo'))
+        match = re.compile(glob.translate('.*')).match
+        self.assertIsNotNone(match('.foo'))
+        match = re.compile(glob.translate('**', recursive=True)).match
+        self.assertIsNotNone(match('foo'))
+        self.assertIsNone(match('.foo'))
+        self.assertIsNotNone(match(os.path.join('foo', 'bar')))
+        self.assertIsNone(match(os.path.join('foo', '.bar')))
+        self.assertIsNone(match(os.path.join('.foo', 'bar')))
+        self.assertIsNone(match(os.path.join('.foo', '.bar')))
+        match = re.compile(glob.translate('**/*', recursive=True)).match
+        self.assertIsNotNone(match(os.path.join('foo', 'bar')))
+        self.assertIsNone(match(os.path.join('foo', '.bar')))
+        self.assertIsNone(match(os.path.join('.foo', 'bar')))
+        self.assertIsNone(match(os.path.join('.foo', '.bar')))
+        match = re.compile(glob.translate('*/**', recursive=True)).match
+        self.assertIsNotNone(match(os.path.join('foo', 'bar')))
+        self.assertIsNone(match(os.path.join('foo', '.bar')))
+        self.assertIsNone(match(os.path.join('.foo', 'bar')))
+        self.assertIsNone(match(os.path.join('.foo', '.bar')))
+        match = re.compile(glob.translate('**/.bar', recursive=True)).match
+        self.assertIsNotNone(match(os.path.join('foo', '.bar')))
+        self.assertIsNone(match(os.path.join('.foo', '.bar')))
+        match = re.compile(glob.translate('**/*.*', recursive=True)).match
+        self.assertIsNone(match(os.path.join('foo', 'bar')))
+        self.assertIsNone(match(os.path.join('foo', '.bar')))
+        self.assertIsNotNone(match(os.path.join('foo', 'bar.txt')))
+        self.assertIsNone(match(os.path.join('foo', '.bar.txt')))
+
+    def test_translate(self):
+        def fn(pat):
+            return glob.translate(pat, seps='/')
+        self.assertEqual(fn('foo'), r'(?s:foo)\Z')
+        self.assertEqual(fn('foo/bar'), r'(?s:foo/bar)\Z')
+        self.assertEqual(fn('*'), r'(?s:[^/.][^/]*)\Z')
+        self.assertEqual(fn('?'), r'(?s:(?!\.)[^/])\Z')
+        self.assertEqual(fn('a*'), r'(?s:a[^/]*)\Z')
+        self.assertEqual(fn('*a'), r'(?s:(?!\.)[^/]*a)\Z')
+        self.assertEqual(fn('.*'), r'(?s:\.[^/]*)\Z')
+        self.assertEqual(fn('?aa'), r'(?s:(?!\.)[^/]aa)\Z')
+        self.assertEqual(fn('aa?'), r'(?s:aa[^/])\Z')
+        self.assertEqual(fn('aa[ab]'), r'(?s:aa[ab])\Z')
+        self.assertEqual(fn('**'), r'(?s:(?!\.)[^/]*)\Z')
+        self.assertEqual(fn('***'), r'(?s:(?!\.)[^/]*)\Z')
+        self.assertEqual(fn('a**'), r'(?s:a[^/]*)\Z')
+        self.assertEqual(fn('**b'), r'(?s:(?!\.)[^/]*b)\Z')
+        self.assertEqual(fn('/**/*/*.*/**'),
+                         r'(?s:/(?!\.)[^/]*/[^/.][^/]*/(?!\.)[^/]*\.[^/]*/(?!\.)[^/]*)\Z')
+
+    def test_translate_include_hidden(self):
+        def fn(pat):
+            return glob.translate(pat, include_hidden=True, seps='/')
+        self.assertEqual(fn('foo'), r'(?s:foo)\Z')
+        self.assertEqual(fn('foo/bar'), r'(?s:foo/bar)\Z')
+        self.assertEqual(fn('*'), r'(?s:[^/]+)\Z')
+        self.assertEqual(fn('?'), r'(?s:[^/])\Z')
+        self.assertEqual(fn('a*'), r'(?s:a[^/]*)\Z')
+        self.assertEqual(fn('*a'), r'(?s:[^/]*a)\Z')
+        self.assertEqual(fn('.*'), r'(?s:\.[^/]*)\Z')
+        self.assertEqual(fn('?aa'), r'(?s:[^/]aa)\Z')
+        self.assertEqual(fn('aa?'), r'(?s:aa[^/])\Z')
+        self.assertEqual(fn('aa[ab]'), r'(?s:aa[ab])\Z')
+        self.assertEqual(fn('**'), r'(?s:[^/]*)\Z')
+        self.assertEqual(fn('***'), r'(?s:[^/]*)\Z')
+        self.assertEqual(fn('a**'), r'(?s:a[^/]*)\Z')
+        self.assertEqual(fn('**b'), r'(?s:[^/]*b)\Z')
+        self.assertEqual(fn('/**/*/*.*/**'), r'(?s:/[^/]*/[^/]+/[^/]*\.[^/]*/[^/]*)\Z')
+
+    def test_translate_recursive(self):
+        def fn(pat):
+            return glob.translate(pat, recursive=True, include_hidden=True, seps='/')
+        self.assertEqual(fn('*'), r'(?s:[^/]+)\Z')
+        self.assertEqual(fn('?'), r'(?s:[^/])\Z')
+        self.assertEqual(fn('**'), r'(?s:.*)\Z')
+        self.assertEqual(fn('**/**'), r'(?s:.*)\Z')
+        self.assertRaises(ValueError, fn, '***')
+        self.assertRaises(ValueError, fn, 'a**')
+        self.assertRaises(ValueError, fn, '**b')
+        self.assertEqual(fn('/**/*/*.*/**'), r'(?s:/(?:.+/)?[^/]+/[^/]*\.[^/]*/.*)\Z')
+
+    def test_translate_seps(self):
+        def fn(pat):
+            return glob.translate(pat, recursive=True, include_hidden=True, seps=['/', '\\'])
+        self.assertEqual(fn('foo/bar\\baz'), r'(?s:foo[/\\]bar[/\\]baz)\Z')
+        self.assertEqual(fn('**/*'), r'(?s:(?:.+[/\\])?[^/\\]+)\Z')
+
 
 @skip_unless_symlink
 class SymlinkLoopGlobTests(unittest.TestCase):
diff --git a/Lib/test/test_grammar.py b/Lib/test/test_grammar.py
index ee105a3de17f8a..8501006b799262 100644
--- a/Lib/test/test_grammar.py
+++ b/Lib/test/test_grammar.py
@@ -12,9 +12,9 @@
 
 # different import patterns to check that __annotations__ does not interfere
 # with import machinery
-import test.ann_module as ann_module
+import test.typinganndata.ann_module as ann_module
 import typing
-from test import ann_module2
+from test.typinganndata import ann_module2
 import test
 
 # These are shared with test_tokenize and other test modules.
@@ -236,6 +236,10 @@ def check(test, error=False):
             check(f"[{num}for x in ()]")
             check(f"{num}spam", error=True)
 
+            # gh-88943: Invalid non-ASCII character following a numerical literal.
+            with self.assertRaisesRegex(SyntaxError, r"invalid character '�' \(U\+2044\)"):
+                compile(f"{num}�7", "<testcase>", "eval")
+
             with self.assertWarnsRegex(SyntaxWarning, r'invalid \w+ literal'):
                 compile(f"{num}is x", "<testcase>", "eval")
             with warnings.catch_warnings():
@@ -350,6 +354,11 @@ def test_var_annot_syntax_errors(self):
         check_syntax_error(self, "x: int: str")
         check_syntax_error(self, "def f():\n"
                                  "    nonlocal x: int\n")
+        check_syntax_error(self, "def f():\n"
+                                 "    global x: int\n")
+        check_syntax_error(self, "x: int = y = 1")
+        check_syntax_error(self, "z = w: int = 1")
+        check_syntax_error(self, "x: int = y: int = 1")
         # AST pass
         check_syntax_error(self, "[x, 0]: int\n")
         check_syntax_error(self, "f(): int\n")
@@ -363,6 +372,12 @@ def test_var_annot_syntax_errors(self):
         check_syntax_error(self, "def f():\n"
                                  "    global x\n"
                                  "    x: int\n")
+        check_syntax_error(self, "def f():\n"
+                                 "    x: int\n"
+                                 "    nonlocal x\n")
+        check_syntax_error(self, "def f():\n"
+                                 "    nonlocal x\n"
+                                 "    x: int\n")
 
     def test_var_annot_basic_semantics(self):
         # execution order
@@ -452,7 +467,7 @@ def test_var_annot_module_semantics(self):
     def test_var_annot_in_module(self):
         # check that functions fail the same way when executed
         # outside of module where they were defined
-        ann_module3 = import_helper.import_fresh_module("test.ann_module3")
+        ann_module3 = import_helper.import_fresh_module("test.typinganndata.ann_module3")
         with self.assertRaises(NameError):
             ann_module3.f_bad_ann()
         with self.assertRaises(NameError):
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
index 6de413e5056ef0..128f933787a3f6 100644
--- a/Lib/test/test_gzip.py
+++ b/Lib/test/test_gzip.py
@@ -16,6 +16,7 @@
 from test.support.script_helper import assert_python_ok, assert_python_failure
 
 gzip = import_helper.import_module('gzip')
+zlib = import_helper.import_module('zlib')
 
 data1 = b"""  int length=DEFAULTALLOC, err = Z_OK;
   PyObject *RetVal;
@@ -616,6 +617,66 @@ def test_issue44439(self):
             self.assertEqual(f.write(q), LENGTH)
             self.assertEqual(f.tell(), LENGTH)
 
+    def test_flush_flushes_compressor(self):
+        # See issue GH-105808.
+        b = io.BytesIO()
+        message = b"important message here."
+        with gzip.GzipFile(fileobj=b, mode='w') as f:
+            f.write(message)
+            f.flush()
+            partial_data = b.getvalue()
+        full_data = b.getvalue()
+        self.assertEqual(gzip.decompress(full_data), message)
+        # The partial data should contain the gzip header and the complete
+        # message, but not the end-of-stream markers (so we can't just
+        # decompress it directly).
+        with self.assertRaises(EOFError):
+            gzip.decompress(partial_data)
+        d = zlib.decompressobj(wbits=-zlib.MAX_WBITS)
+        f = io.BytesIO(partial_data)
+        gzip._read_gzip_header(f)
+        read_message = d.decompress(f.read())
+        self.assertEqual(read_message, message)
+
+    def test_flush_modes(self):
+        # Make sure the argument to flush is properly passed to the
+        # zlib.compressobj; see issue GH-105808.
+        class FakeCompressor:
+            def __init__(self):
+                self.modes = []
+            def compress(self, data):
+                return b''
+            def flush(self, mode=-1):
+                self.modes.append(mode)
+                return b''
+        b = io.BytesIO()
+        fc = FakeCompressor()
+        with gzip.GzipFile(fileobj=b, mode='w') as f:
+            f.compress = fc
+            f.flush()
+            f.flush(50)
+            f.flush(zlib_mode=100)
+        # The implicit close will also flush the compressor.
+        expected_modes = [
+            zlib.Z_SYNC_FLUSH,
+            50,
+            100,
+            -1,
+        ]
+        self.assertEqual(fc.modes, expected_modes)
+
+    def test_write_seek_write(self):
+        # Make sure that offset is up-to-date before seeking
+        # See issue GH-108111
+        b = io.BytesIO()
+        message = b"important message here."
+        with gzip.GzipFile(fileobj=b, mode='w') as f:
+            f.write(message)
+            f.seek(len(message))
+            f.write(message)
+        data = b.getvalue()
+        self.assertEqual(gzip.decompress(data), message * 2)
+
 
 class TestOpen(BaseTest):
     def test_binary_modes(self):
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 4b1d355f550b49..caa4c76a913a01 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -21,11 +21,13 @@
 
 here = os.path.dirname(__file__)
 # Self-signed cert file for 'localhost'
-CERT_localhost = os.path.join(here, 'keycert.pem')
+CERT_localhost = os.path.join(here, 'certdata', 'keycert.pem')
 # Self-signed cert file for 'fakehostname'
-CERT_fakehostname = os.path.join(here, 'keycert2.pem')
+CERT_fakehostname = os.path.join(here, 'certdata', 'keycert2.pem')
 # Self-signed cert file for self-signed.pythontest.net
-CERT_selfsigned_pythontestdotnet = os.path.join(here, 'selfsigned_pythontestdotnet.pem')
+CERT_selfsigned_pythontestdotnet = os.path.join(
+    here, 'certdata', 'selfsigned_pythontestdotnet.pem',
+)
 
 # constants for testing chunked encoding
 chunked_start = (
@@ -281,6 +283,22 @@ def test_ipv6host_header(self):
         conn.request('GET', '/foo')
         self.assertTrue(sock.data.startswith(expected))
 
+        expected = b'GET /foo HTTP/1.1\r\nHost: [fe80::]\r\n' \
+                   b'Accept-Encoding: identity\r\n\r\n'
+        conn = client.HTTPConnection('[fe80::%2]')
+        sock = FakeSocket('')
+        conn.sock = sock
+        conn.request('GET', '/foo')
+        self.assertTrue(sock.data.startswith(expected))
+
+        expected = b'GET /foo HTTP/1.1\r\nHost: [fe80::]:81\r\n' \
+                   b'Accept-Encoding: identity\r\n\r\n'
+        conn = client.HTTPConnection('[fe80::%2]:81')
+        sock = FakeSocket('')
+        conn.sock = sock
+        conn.request('GET', '/foo')
+        self.assertTrue(sock.data.startswith(expected))
+
     def test_malformed_headers_coped_with(self):
         # Issue 19996
         body = "HTTP/1.1 200 OK\r\nFirst: val\r\n: nval\r\nSecond: val\r\n\r\n"
@@ -1954,6 +1972,7 @@ def test_networked_good_cert(self):
             h.close()
             self.assertIn('nginx', server_string)
 
+    @support.requires_resource('walltime')
     def test_networked_bad_cert(self):
         # We feed a "CA" cert that is unrelated to the server's cert
         import ssl
@@ -2401,9 +2420,22 @@ def test_proxy_response_headers(self):
         self.conn.set_tunnel('destination.com')
 
         self.conn.request('PUT', '/', '')
-        headers = self.conn._proxy_response_headers
+        headers = self.conn.get_proxy_response_headers()
         self.assertIn(expected_header, headers.items())
 
+    def test_no_proxy_response_headers(self):
+        expected_header = ('X-Dummy', '1')
+        response_text = (
+            'HTTP/1.0 200 OK\r\n'
+            '{0}\r\n\r\n'.format(':'.join(expected_header))
+        )
+
+        self.conn._create_connection = self._create_connection(response_text)
+
+        self.conn.request('PUT', '/', '')
+        headers = self.conn.get_proxy_response_headers()
+        self.assertIsNone(headers)
+
     def test_tunnel_leak(self):
         sock = None
 
diff --git a/Lib/test/test_httpservers.py b/Lib/test/test_httpservers.py
index cdd1bea754a020..9fa6ecf9c08e27 100644
--- a/Lib/test/test_httpservers.py
+++ b/Lib/test/test_httpservers.py
@@ -442,10 +442,10 @@ def test_undecodable_filename(self):
     def test_undecodable_parameter(self):
         # sanity check using a valid parameter
         response = self.request(self.base_url + '/?x=123').read()
-        self.assertRegex(response, f'listing for {self.base_url}/\?x=123'.encode('latin1'))
+        self.assertRegex(response, rf'listing for {self.base_url}/\?x=123'.encode('latin1'))
         # now the bogus encoding
         response = self.request(self.base_url + '/?x=%bb').read()
-        self.assertRegex(response, f'listing for {self.base_url}/\?x=\xef\xbf\xbd'.encode('latin1'))
+        self.assertRegex(response, rf'listing for {self.base_url}/\?x=\xef\xbf\xbd'.encode('latin1'))
 
     def test_get_dir_redirect_location_domain_injection_bug(self):
         """Ensure //evil.co/..%2f../../X does not put //evil.co/ in Location.
@@ -699,11 +699,20 @@ def test_html_escape_filename(self):
         "This test can't be run reliably as root (issue #13308).")
 class CGIHTTPServerTestCase(BaseTestCase):
     class request_handler(NoLogRequestHandler, CGIHTTPRequestHandler):
-        pass
+        _test_case_self = None  # populated by each setUp() method call.
+
+        def __init__(self, *args, **kwargs):
+            with self._test_case_self.assertWarnsRegex(
+                    DeprecationWarning,
+                    r'http\.server\.CGIHTTPRequestHandler'):
+                # This context also happens to catch and silence the
+                # threading DeprecationWarning from os.fork().
+                super().__init__(*args, **kwargs)
 
     linesep = os.linesep.encode('ascii')
 
     def setUp(self):
+        self.request_handler._test_case_self = self  # practical, but yuck.
         BaseTestCase.setUp(self)
         self.cwd = os.getcwd()
         self.parent_dir = tempfile.mkdtemp()
@@ -780,6 +789,7 @@ def setUp(self):
         os.chdir(self.parent_dir)
 
     def tearDown(self):
+        self.request_handler._test_case_self = None
         try:
             os.chdir(self.cwd)
             if self._pythonexe_symlink:
diff --git a/Lib/test/test_idle.py b/Lib/test/test_idle.py
index ebb1e8eb823b51..3d8b7ecc0ecb6d 100644
--- a/Lib/test/test_idle.py
+++ b/Lib/test/test_idle.py
@@ -3,6 +3,7 @@
 from test.support import check_sanitizer
 
 if check_sanitizer(address=True, memory=True):
+    # See gh-90791 for details
     raise unittest.SkipTest("Tests involving libX11 can SEGFAULT on ASAN/MSAN builds")
 
 # Skip test_idle if _tkinter, tkinter, or idlelib are missing.
diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
index 60f5b671b1da48..b97474acca370f 100644
--- a/Lib/test/test_imaplib.py
+++ b/Lib/test/test_imaplib.py
@@ -10,7 +10,7 @@
 import threading
 import socket
 
-from test.support import verbose, run_with_tz, run_with_locale, cpython_only
+from test.support import verbose, run_with_tz, run_with_locale, cpython_only, requires_resource
 from test.support import hashlib_helper
 from test.support import threading_helper
 import unittest
@@ -23,8 +23,8 @@
 
 support.requires_working_socket(module=True)
 
-CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "keycert3.pem")
-CAFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "pycacert.pem")
+CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "certdata", "keycert3.pem")
+CAFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "certdata", "pycacert.pem")
 
 
 class TestImaplib(unittest.TestCase):
@@ -74,6 +74,7 @@ def test_that_Time2Internaldate_returns_a_result(self):
         for t in self.timevalues():
             imaplib.Time2Internaldate(t)
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_imap4_host_default_value(self):
         # Check whether the IMAP4_PORT is truly unavailable.
         with socket.socket() as s:
@@ -456,6 +457,7 @@ def test_simple_with_statement(self):
         with self.imap_class(*server.server_address):
             pass
 
+    @requires_resource('walltime')
     def test_imaplib_timeout_test(self):
         _, server = self._setup(SimpleIMAPHandler)
         addr = server.server_address[1]
@@ -549,6 +551,7 @@ class NewIMAPSSLTests(NewIMAPTestsMixin, unittest.TestCase):
     imap_class = IMAP4_SSL
     server_class = SecureTCPServer
 
+    @requires_resource('walltime')
     def test_ssl_raises(self):
         ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         self.assertEqual(ssl_context.verify_mode, ssl.CERT_REQUIRED)
@@ -563,6 +566,7 @@ def test_ssl_raises(self):
                                      ssl_context=ssl_context)
             client.shutdown()
 
+    @requires_resource('walltime')
     def test_ssl_verified(self):
         ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         ssl_context.load_verify_locations(CAFILE)
@@ -965,100 +969,5 @@ def test_ssl_verified(self):
             client.shutdown()
 
 
-@unittest.skipUnless(
-    support.is_resource_enabled('network'), 'network resource disabled')
-@unittest.skip('cyrus.andrew.cmu.edu blocks connections')
-class RemoteIMAPTest(unittest.TestCase):
-    host = 'cyrus.andrew.cmu.edu'
-    port = 143
-    username = 'anonymous'
-    password = 'pass'
-    imap_class = imaplib.IMAP4
-
-    def setUp(self):
-        with socket_helper.transient_internet(self.host):
-            self.server = self.imap_class(self.host, self.port)
-
-    def tearDown(self):
-        if self.server is not None:
-            with socket_helper.transient_internet(self.host):
-                self.server.logout()
-
-    def test_logincapa(self):
-        with socket_helper.transient_internet(self.host):
-            for cap in self.server.capabilities:
-                self.assertIsInstance(cap, str)
-            self.assertIn('LOGINDISABLED', self.server.capabilities)
-            self.assertIn('AUTH=ANONYMOUS', self.server.capabilities)
-            rs = self.server.login(self.username, self.password)
-            self.assertEqual(rs[0], 'OK')
-
-    def test_logout(self):
-        with socket_helper.transient_internet(self.host):
-            rs = self.server.logout()
-            self.server = None
-            self.assertEqual(rs[0], 'BYE', rs)
-
-
-@unittest.skipUnless(ssl, "SSL not available")
-@unittest.skipUnless(
-    support.is_resource_enabled('network'), 'network resource disabled')
-@unittest.skip('cyrus.andrew.cmu.edu blocks connections')
-class RemoteIMAP_STARTTLSTest(RemoteIMAPTest):
-
-    def setUp(self):
-        super().setUp()
-        with socket_helper.transient_internet(self.host):
-            rs = self.server.starttls()
-            self.assertEqual(rs[0], 'OK')
-
-    def test_logincapa(self):
-        for cap in self.server.capabilities:
-            self.assertIsInstance(cap, str)
-        self.assertNotIn('LOGINDISABLED', self.server.capabilities)
-
-
-@unittest.skipUnless(ssl, "SSL not available")
-@unittest.skip('cyrus.andrew.cmu.edu blocks connections')
-class RemoteIMAP_SSLTest(RemoteIMAPTest):
-    port = 993
-    imap_class = IMAP4_SSL
-
-    def setUp(self):
-        pass
-
-    def tearDown(self):
-        pass
-
-    def create_ssl_context(self):
-        ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
-        ssl_context.check_hostname = False
-        ssl_context.verify_mode = ssl.CERT_NONE
-        ssl_context.load_cert_chain(CERTFILE)
-        return ssl_context
-
-    def check_logincapa(self, server):
-        try:
-            for cap in server.capabilities:
-                self.assertIsInstance(cap, str)
-            self.assertNotIn('LOGINDISABLED', server.capabilities)
-            self.assertIn('AUTH=PLAIN', server.capabilities)
-            rs = server.login(self.username, self.password)
-            self.assertEqual(rs[0], 'OK')
-        finally:
-            server.logout()
-
-    def test_logincapa(self):
-        with socket_helper.transient_internet(self.host):
-            _server = self.imap_class(self.host, self.port)
-            self.check_logincapa(_server)
-
-    def test_logout(self):
-        with socket_helper.transient_internet(self.host):
-            _server = self.imap_class(self.host, self.port)
-            rs = _server.logout()
-            self.assertEqual(rs[0], 'BYE', rs)
-
-
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_imghdr.py b/Lib/test/test_imghdr.py
deleted file mode 100644
index 208c8eee455e7b..00000000000000
--- a/Lib/test/test_imghdr.py
+++ /dev/null
@@ -1,144 +0,0 @@
-import io
-import os
-import pathlib
-import unittest
-import warnings
-from test.support import findfile, warnings_helper
-from test.support.os_helper import TESTFN, unlink
-
-imghdr = warnings_helper.import_deprecated("imghdr")
-
-
-TEST_FILES = (
-    ('python.png', 'png'),
-    ('python.gif', 'gif'),
-    ('python.bmp', 'bmp'),
-    ('python.ppm', 'ppm'),
-    ('python.pgm', 'pgm'),
-    ('python.pbm', 'pbm'),
-    ('python.jpg', 'jpeg'),
-    ('python-raw.jpg', 'jpeg'),  # raw JPEG without JFIF/EXIF markers
-    ('python.ras', 'rast'),
-    ('python.sgi', 'rgb'),
-    ('python.tiff', 'tiff'),
-    ('python.xbm', 'xbm'),
-    ('python.webp', 'webp'),
-    ('python.exr', 'exr'),
-)
-
-class UnseekableIO(io.FileIO):
-    def tell(self):
-        raise io.UnsupportedOperation
-
-    def seek(self, *args, **kwargs):
-        raise io.UnsupportedOperation
-
-class TestImghdr(unittest.TestCase):
-    @classmethod
-    def setUpClass(cls):
-        cls.testfile = findfile('python.png', subdir='imghdrdata')
-        with open(cls.testfile, 'rb') as stream:
-            cls.testdata = stream.read()
-
-    def tearDown(self):
-        unlink(TESTFN)
-
-    def test_data(self):
-        for filename, expected in TEST_FILES:
-            filename = findfile(filename, subdir='imghdrdata')
-            self.assertEqual(imghdr.what(filename), expected)
-            with open(filename, 'rb') as stream:
-                self.assertEqual(imghdr.what(stream), expected)
-            with open(filename, 'rb') as stream:
-                data = stream.read()
-            self.assertEqual(imghdr.what(None, data), expected)
-            self.assertEqual(imghdr.what(None, bytearray(data)), expected)
-
-    def test_pathlike_filename(self):
-        for filename, expected in TEST_FILES:
-            with self.subTest(filename=filename):
-                filename = findfile(filename, subdir='imghdrdata')
-                self.assertEqual(imghdr.what(pathlib.Path(filename)), expected)
-
-    def test_register_test(self):
-        def test_jumbo(h, file):
-            if h.startswith(b'eggs'):
-                return 'ham'
-        imghdr.tests.append(test_jumbo)
-        self.addCleanup(imghdr.tests.pop)
-        self.assertEqual(imghdr.what(None, b'eggs'), 'ham')
-
-    def test_file_pos(self):
-        with open(TESTFN, 'wb') as stream:
-            stream.write(b'ababagalamaga')
-            pos = stream.tell()
-            stream.write(self.testdata)
-        with open(TESTFN, 'rb') as stream:
-            stream.seek(pos)
-            self.assertEqual(imghdr.what(stream), 'png')
-            self.assertEqual(stream.tell(), pos)
-
-    def test_bad_args(self):
-        with self.assertRaises(TypeError):
-            imghdr.what()
-        with self.assertRaises(AttributeError):
-            imghdr.what(None)
-        with self.assertRaises(TypeError):
-            imghdr.what(self.testfile, 1)
-        with self.assertRaises(AttributeError):
-            imghdr.what(os.fsencode(self.testfile))
-        with open(self.testfile, 'rb') as f:
-            with self.assertRaises(AttributeError):
-                imghdr.what(f.fileno())
-
-    def test_invalid_headers(self):
-        for header in (b'\211PN\r\n',
-                       b'\001\331',
-                       b'\x59\xA6',
-                       b'cutecat',
-                       b'000000JFI',
-                       b'GIF80'):
-            self.assertIsNone(imghdr.what(None, header))
-
-    def test_string_data(self):
-        with warnings.catch_warnings():
-            warnings.simplefilter("ignore", BytesWarning)
-            for filename, _ in TEST_FILES:
-                filename = findfile(filename, subdir='imghdrdata')
-                with open(filename, 'rb') as stream:
-                    data = stream.read().decode('latin1')
-                with self.assertRaises(TypeError):
-                    imghdr.what(io.StringIO(data))
-                with self.assertRaises(TypeError):
-                    imghdr.what(None, data)
-
-    def test_missing_file(self):
-        with self.assertRaises(FileNotFoundError):
-            imghdr.what('missing')
-
-    def test_closed_file(self):
-        stream = open(self.testfile, 'rb')
-        stream.close()
-        with self.assertRaises(ValueError) as cm:
-            imghdr.what(stream)
-        stream = io.BytesIO(self.testdata)
-        stream.close()
-        with self.assertRaises(ValueError) as cm:
-            imghdr.what(stream)
-
-    def test_unseekable(self):
-        with open(TESTFN, 'wb') as stream:
-            stream.write(self.testdata)
-        with UnseekableIO(TESTFN, 'rb') as stream:
-            with self.assertRaises(io.UnsupportedOperation):
-                imghdr.what(stream)
-
-    def test_output_stream(self):
-        with open(TESTFN, 'wb') as stream:
-            stream.write(self.testdata)
-            stream.seek(0)
-            with self.assertRaises(OSError) as cm:
-                imghdr.what(stream)
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_import/__init__.py b/Lib/test/test_import/__init__.py
index e2384a08ecaa90..1ecac4f37fe1c1 100644
--- a/Lib/test/test_import/__init__.py
+++ b/Lib/test/test_import/__init__.py
@@ -1,5 +1,4 @@
 import builtins
-import contextlib
 import errno
 import glob
 import json
@@ -22,16 +21,17 @@
 import types
 import unittest
 from unittest import mock
-import _testinternalcapi
+import _imp
 
 from test.support import os_helper
 from test.support import (
     STDLIB_DIR, swap_attr, swap_item, cpython_only, is_emscripten,
-    is_wasi, run_in_subinterp, run_in_subinterp_with_config)
+    is_wasi, run_in_subinterp, run_in_subinterp_with_config, Py_TRACE_REFS)
 from test.support.import_helper import (
-    forget, make_legacy_pyc, unlink, unload, DirsOnSysPath, CleanImport)
+    forget, make_legacy_pyc, unlink, unload, ready_to_import,
+    DirsOnSysPath, CleanImport)
 from test.support.os_helper import (
-    TESTFN, rmtree, temp_umask, TESTFN_UNENCODABLE, temp_dir)
+    TESTFN, rmtree, temp_umask, TESTFN_UNENCODABLE)
 from test.support import script_helper
 from test.support import threading_helper
 from test.test_importlib.util import uncache
@@ -48,6 +48,10 @@
     import _xxsubinterpreters as _interpreters
 except ModuleNotFoundError:
     _interpreters = None
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = None
 
 
 skip_if_dont_write_bytecode = unittest.skipIf(
@@ -96,7 +100,6 @@ def require_frozen(module, *, skip=True):
 def require_pure_python(module, *, skip=False):
     _require_loader(module, SourceFileLoader, skip)
 
-
 def remove_files(name):
     for f in (name + ".py",
               name + ".pyc",
@@ -106,40 +109,54 @@ def remove_files(name):
     rmtree('__pycache__')
 
 
-@contextlib.contextmanager
-def _ready_to_import(name=None, source=""):
-    # sets up a temporary directory and removes it
-    # creates the module file
-    # temporarily clears the module from sys.modules (if any)
-    # reverts or removes the module when cleaning up
-    name = name or "spam"
-    with temp_dir() as tempdir:
-        path = script_helper.make_script(tempdir, name, source)
-        old_module = sys.modules.pop(name, None)
-        try:
-            sys.path.insert(0, tempdir)
-            yield name, path
-            sys.path.remove(tempdir)
-        finally:
-            if old_module is not None:
-                sys.modules[name] = old_module
-            elif name in sys.modules:
-                del sys.modules[name]
-
+def no_rerun(reason):
+    """Skip rerunning for a particular test.
 
-def requires_subinterpreters(meth):
-    """Decorator to skip a test if subinterpreters are not supported."""
-    return unittest.skipIf(_interpreters is None,
-                           'subinterpreters required')(meth)
+    WARNING: Use this decorator with care; skipping rerunning makes it
+    impossible to find reference leaks. Provide a clear reason for skipping the
+    test using the 'reason' parameter.
+    """
+    def deco(func):
+        _has_run = False
+        def wrapper(self):
+            nonlocal _has_run
+            if _has_run:
+                self.skipTest(reason)
+            func(self)
+            _has_run = True
+        return wrapper
+    return deco
+
+
+if _testsinglephase is not None:
+    def restore__testsinglephase(*, _orig=_testsinglephase):
+        # We started with the module imported and want to restore
+        # it to its nominal state.
+        sys.modules.pop('_testsinglephase', None)
+        _orig._clear_globals()
+        _testinternalcapi.clear_extension('_testsinglephase', _orig.__file__)
+        import _testsinglephase
 
 
 def requires_singlephase_init(meth):
     """Decorator to skip if single-phase init modules are not supported."""
+    if not isinstance(meth, type):
+        def meth(self, _meth=meth):
+            try:
+                return _meth(self)
+            finally:
+                restore__testsinglephase()
     meth = cpython_only(meth)
     return unittest.skipIf(_testsinglephase is None,
                            'test requires _testsinglephase module')(meth)
 
 
+def requires_subinterpreters(meth):
+    """Decorator to skip a test if subinterpreters are not supported."""
+    return unittest.skipIf(_interpreters is None,
+                           'subinterpreters required')(meth)
+
+
 class ModuleSnapshot(types.SimpleNamespace):
     """A representation of a module for testing.
 
@@ -366,7 +383,7 @@ def test_from_import_missing_attr_path_is_canonical(self):
 
     def test_from_import_star_invalid_type(self):
         import re
-        with _ready_to_import() as (name, path):
+        with ready_to_import() as (name, path):
             with open(path, 'w', encoding='utf-8') as f:
                 f.write("__all__ = [b'invalid_type']")
             globals = {}
@@ -375,7 +392,7 @@ def test_from_import_star_invalid_type(self):
             ):
                 exec(f"from {name} import *", globals)
             self.assertNotIn(b"invalid_type", globals)
-        with _ready_to_import() as (name, path):
+        with ready_to_import() as (name, path):
             with open(path, 'w', encoding='utf-8') as f:
                 f.write("globals()[b'invalid_type'] = object()")
             globals = {}
@@ -763,6 +780,13 @@ def test_dll_dependency_import(self):
                                     env=env,
                                     cwd=os.path.dirname(pyexe))
 
+    def test_issue105979(self):
+        # this used to crash
+        with self.assertRaises(ImportError) as cm:
+            _imp.get_frozen_object("x", b"6\'\xd5Cu\x12")
+        self.assertIn("Frozen object named 'x' is invalid",
+                      str(cm.exception))
+
 
 @skip_if_dont_write_bytecode
 class FilePermissionTests(unittest.TestCase):
@@ -776,7 +800,7 @@ class FilePermissionTests(unittest.TestCase):
     )
     def test_creation_mode(self):
         mask = 0o022
-        with temp_umask(mask), _ready_to_import() as (name, path):
+        with temp_umask(mask), ready_to_import() as (name, path):
             cached_path = importlib.util.cache_from_source(path)
             module = __import__(name)
             if not os.path.exists(cached_path):
@@ -795,7 +819,7 @@ def test_creation_mode(self):
     def test_cached_mode_issue_2051(self):
         # permissions of .pyc should match those of .py, regardless of mask
         mode = 0o600
-        with temp_umask(0o022), _ready_to_import() as (name, path):
+        with temp_umask(0o022), ready_to_import() as (name, path):
             cached_path = importlib.util.cache_from_source(path)
             os.chmod(path, mode)
             __import__(name)
@@ -811,7 +835,7 @@ def test_cached_mode_issue_2051(self):
     @os_helper.skip_unless_working_chmod
     def test_cached_readonly(self):
         mode = 0o400
-        with temp_umask(0o022), _ready_to_import() as (name, path):
+        with temp_umask(0o022), ready_to_import() as (name, path):
             cached_path = importlib.util.cache_from_source(path)
             os.chmod(path, mode)
             __import__(name)
@@ -826,7 +850,7 @@ def test_cached_readonly(self):
     def test_pyc_always_writable(self):
         # Initially read-only .pyc files on Windows used to cause problems
         # with later updates, see issue #6074 for details
-        with _ready_to_import() as (name, path):
+        with ready_to_import() as (name, path):
             # Write a Python file, make it read-only and import it
             with open(path, 'w', encoding='utf-8') as f:
                 f.write("x = 'original'\n")
@@ -1640,9 +1664,10 @@ class SubinterpImportTests(unittest.TestCase):
     )
     ISOLATED = dict(
         use_main_obmalloc=False,
-        own_gil=True,
+        gil=2,
     )
     NOT_ISOLATED = {k: not v for k, v in ISOLATED.items()}
+    NOT_ISOLATED['gil'] = 1
 
     @unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
     def pipe(self):
@@ -1762,12 +1787,12 @@ def check_compatible_fresh(self, name, *, strict=False, isolated=False):
             check_multi_interp_extensions=strict,
         )
         _, out, err = script_helper.assert_python_ok('-c', textwrap.dedent(f'''
-            import _testcapi, sys
+            import _testinternalcapi, sys
             assert (
                 {name!r} in sys.builtin_module_names or
                 {name!r} not in sys.modules
             ), repr({name!r})
-            ret = _testcapi.run_in_subinterp_with_config(
+            ret = _testinternalcapi.run_in_subinterp_with_config(
                 {self.import_script(name, "sys.stdout.fileno()")!r},
                 **{kwargs},
             )
@@ -1786,9 +1811,9 @@ def check_incompatible_fresh(self, name, *, isolated=False):
             check_multi_interp_extensions=True,
         )
         _, out, err = script_helper.assert_python_ok('-c', textwrap.dedent(f'''
-            import _testcapi, sys
+            import _testinternalcapi, sys
             assert {name!r} not in sys.modules, {name!r}
-            ret = _testcapi.run_in_subinterp_with_config(
+            ret = _testinternalcapi.run_in_subinterp_with_config(
                 {self.import_script(name, "sys.stdout.fileno()")!r},
                 **{kwargs},
             )
@@ -1934,6 +1959,22 @@ def test_isolated_config(self):
         with self.subTest(f'{module}: strict, fresh'):
             self.check_compatible_fresh(module, strict=True, isolated=True)
 
+    @requires_subinterpreters
+    @requires_singlephase_init
+    def test_disallowed_reimport(self):
+        # See https://github.com/python/cpython/issues/104621.
+        script = textwrap.dedent('''
+            import _testsinglephase
+            print(_testsinglephase)
+            ''')
+        interpid = _interpreters.create()
+
+        excsnap = _interpreters.run_string(interpid, script)
+        self.assertIsNot(excsnap, None)
+
+        excsnap = _interpreters.run_string(interpid, script)
+        self.assertIsNot(excsnap, None)
+
 
 class TestSinglePhaseSnapshot(ModuleSnapshot):
 
@@ -1980,10 +2021,6 @@ class SinglephaseInitTests(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
-        if '-R' in sys.argv or '--huntrleaks' in sys.argv:
-            # https://github.com/python/cpython/issues/102251
-            raise unittest.SkipTest('unresolved refleaks (see gh-102251)')
-
         spec = importlib.util.find_spec(cls.NAME)
         from importlib.machinery import ExtensionFileLoader
         cls.FILE = spec.origin
@@ -1993,6 +2030,10 @@ def setUpClass(cls):
         # Start fresh.
         cls.clean_up()
 
+    @classmethod
+    def tearDownClass(cls):
+        restore__testsinglephase()
+
     def tearDown(self):
         # Clean up the module.
         self.clean_up()
@@ -2069,7 +2110,7 @@ def clean_up():
             _interpreters.run_string(interpid, textwrap.dedent(f'''
                 name = {self.NAME!r}
                 if name in sys.modules:
-                    sys.modules[name]._clear_globals()
+                    sys.modules.pop(name)._clear_globals()
                 _testinternalcapi.clear_extension(name, {self.FILE!r})
                 '''))
             _interpreters.destroy(interpid)
@@ -2320,6 +2361,7 @@ def test_variants(self):
         self.add_module_cleanup(name)
         with self.subTest(name):
             loaded = self.load(name)
+            self.addCleanup(loaded.module._clear_module_state)
 
             self.check_common(loaded)
             self.assertIsNot(loaded.snapshot.state_initialized, None)
@@ -2379,14 +2421,19 @@ def test_with_reinit_reloaded(self):
         # Keep a reference around.
         basic = self.load(self.NAME)
 
-        for name in [
-            f'{self.NAME}_with_reinit',  # m_size == 0
-            f'{self.NAME}_with_state',  # m_size > 0
+        for name, has_state in [
+            (f'{self.NAME}_with_reinit', False),  # m_size == 0
+            (f'{self.NAME}_with_state', True),    # m_size > 0
         ]:
             self.add_module_cleanup(name)
-            with self.subTest(name):
+            with self.subTest(name=name, has_state=has_state):
                 loaded = self.load(name)
+                if has_state:
+                    self.addCleanup(loaded.module._clear_module_state)
+
                 reloaded = self.re_load(name, loaded.module)
+                if has_state:
+                    self.addCleanup(reloaded.module._clear_module_state)
 
                 self.check_common(loaded)
                 self.check_common(reloaded)
@@ -2487,10 +2534,17 @@ def test_basic_multiple_interpreters_main_no_reset(self):
         #  * m_copy was copied from interp2 (was from interp1)
         #  * module's global state was updated, not reset
 
+    @no_rerun(reason="rerun not possible; module state is never cleared (see gh-102251)")
     @requires_subinterpreters
     def test_basic_multiple_interpreters_deleted_no_reset(self):
         # without resetting; already loaded in a deleted interpreter
 
+        if Py_TRACE_REFS:
+            # It's a Py_TRACE_REFS build.
+            # This test breaks interpreter isolation a little,
+            # which causes problems on Py_TRACE_REF builds.
+            raise unittest.SkipTest('crashes on Py_TRACE_REFS builds')
+
         # At this point:
         #  * alive in 0 interpreters
         #  * module def may or may not be loaded already
@@ -2614,6 +2668,30 @@ def test_basic_multiple_interpreters_reset_each(self):
         #  * module's global state was initialized, not reset
 
 
+@cpython_only
+class CAPITests(unittest.TestCase):
+    def test_pyimport_addmodule(self):
+        # gh-105922: Test PyImport_AddModuleRef(), PyImport_AddModule()
+        # and PyImport_AddModuleObject()
+        import _testcapi
+        for name in (
+            'sys',     # frozen module
+            'test',    # package
+            __name__,  # package.module
+        ):
+            _testcapi.check_pyimport_addmodule(name)
+
+    def test_pyimport_addmodule_create(self):
+        # gh-105922: Test PyImport_AddModuleRef(), create a new module
+        import _testcapi
+        name = 'dontexist'
+        self.assertNotIn(name, sys.modules)
+        self.addCleanup(unload, name)
+
+        mod = _testcapi.check_pyimport_addmodule(name)
+        self.assertIs(mod, sys.modules[name])
+
+
 if __name__ == '__main__':
     # Test needs to be a package, so we can do relative imports.
     unittest.main()
diff --git a/Lib/test/test_importlib/builtin/test_finder.py b/Lib/test/test_importlib/builtin/test_finder.py
index 111c4af1ea7cfe..1fb1d2f9efad2b 100644
--- a/Lib/test/test_importlib/builtin/test_finder.py
+++ b/Lib/test/test_importlib/builtin/test_finder.py
@@ -4,7 +4,6 @@
 
 import sys
 import unittest
-import warnings
 
 
 @unittest.skipIf(util.BUILTINS.good_name is None, 'no reasonable builtin module')
diff --git a/Lib/test/test_importlib/extension/test_loader.py b/Lib/test/test_importlib/extension/test_loader.py
index a7c6245825ff86..64c8a5485106e3 100644
--- a/Lib/test/test_importlib/extension/test_loader.py
+++ b/Lib/test/test_importlib/extension/test_loader.py
@@ -1,4 +1,3 @@
-from warnings import catch_warnings
 from test.test_importlib import abc, util
 
 machinery = util.import_importlib('importlib.machinery')
@@ -10,7 +9,6 @@
 import warnings
 import importlib.util
 import importlib
-from test.support.script_helper import assert_python_failure
 
 
 class LoaderTests:
diff --git a/Lib/test/test_importlib/frozen/test_finder.py b/Lib/test/test_importlib/frozen/test_finder.py
index 469dcdbd09eaf7..971cc28b6d3e26 100644
--- a/Lib/test/test_importlib/frozen/test_finder.py
+++ b/Lib/test/test_importlib/frozen/test_finder.py
@@ -2,11 +2,8 @@
 
 machinery = util.import_importlib('importlib.machinery')
 
-import _imp
-import marshal
 import os.path
 import unittest
-import warnings
 
 from test.support import import_helper, REPO_ROOT, STDLIB_DIR
 
diff --git a/Lib/test/test_importlib/frozen/test_loader.py b/Lib/test/test_importlib/frozen/test_loader.py
index 4f1af454b52c71..1112c0664ad477 100644
--- a/Lib/test/test_importlib/frozen/test_loader.py
+++ b/Lib/test/test_importlib/frozen/test_loader.py
@@ -3,9 +3,7 @@
 machinery = util.import_importlib('importlib.machinery')
 
 from test.support import captured_stdout, import_helper, STDLIB_DIR
-import _imp
 import contextlib
-import marshal
 import os.path
 import types
 import unittest
diff --git a/Lib/test/test_importlib/import_/test___loader__.py b/Lib/test/test_importlib/import_/test___loader__.py
index a14163919af677..858b37effc64bd 100644
--- a/Lib/test/test_importlib/import_/test___loader__.py
+++ b/Lib/test/test_importlib/import_/test___loader__.py
@@ -1,8 +1,5 @@
 from importlib import machinery
-import sys
-import types
 import unittest
-import warnings
 
 from test.test_importlib import util
 
diff --git a/Lib/test/test_importlib/import_/test_packages.py b/Lib/test/test_importlib/import_/test_packages.py
index eb0831f7d6d54b..0c29d6083265fa 100644
--- a/Lib/test/test_importlib/import_/test_packages.py
+++ b/Lib/test/test_importlib/import_/test_packages.py
@@ -1,7 +1,6 @@
 from test.test_importlib import util
 import sys
 import unittest
-from test import support
 from test.support import import_helper
 
 
diff --git a/Lib/test/test_importlib/source/test_case_sensitivity.py b/Lib/test/test_importlib/source/test_case_sensitivity.py
index 6a06313319dbcd..e52829e628038a 100644
--- a/Lib/test/test_importlib/source/test_case_sensitivity.py
+++ b/Lib/test/test_importlib/source/test_case_sensitivity.py
@@ -9,7 +9,6 @@
 import os
 from test.support import os_helper
 import unittest
-import warnings
 
 
 @util.case_insensitive_tests
diff --git a/Lib/test/test_importlib/source/test_finder.py b/Lib/test/test_importlib/source/test_finder.py
index 12db7c7d352a2f..8c06c4da1f5cba 100644
--- a/Lib/test/test_importlib/source/test_finder.py
+++ b/Lib/test/test_importlib/source/test_finder.py
@@ -10,7 +10,6 @@
 import tempfile
 from test.support.import_helper import make_legacy_pyc
 import unittest
-import warnings
 
 
 class FinderTests(abc.FinderTests):
diff --git a/Lib/test/test_importlib/test_api.py b/Lib/test/test_importlib/test_api.py
index ecf2c47c462e23..2a35f3dcb7210c 100644
--- a/Lib/test/test_importlib/test_api.py
+++ b/Lib/test/test_importlib/test_api.py
@@ -10,7 +10,6 @@
 from test.support import os_helper
 import types
 import unittest
-import warnings
 
 
 class ImportModuleTests:
diff --git a/Lib/test/test_importlib/test_locks.py b/Lib/test/test_importlib/test_locks.py
index ba9cf51c261d52..befac5d62b0abf 100644
--- a/Lib/test/test_importlib/test_locks.py
+++ b/Lib/test/test_importlib/test_locks.py
@@ -29,6 +29,8 @@ class ModuleLockAsRLockTests:
     test_timeout = None
     # _release_save() unsupported
     test_release_save_unacquired = None
+    # _recursion_count() unsupported
+    test_recursion_count = None
     # lock status in repr unsupported
     test_repr = None
     test_locked_repr = None
@@ -91,7 +93,8 @@ def f():
                 b.release()
             if ra:
                 a.release()
-        lock_tests.Bunch(f, NTHREADS).wait_for_finished()
+        with lock_tests.Bunch(f, NTHREADS):
+            pass
         self.assertEqual(len(results), NTHREADS)
         return results
 
diff --git a/Lib/test/test_importlib/test_main.py b/Lib/test/test_importlib/test_main.py
index 46cd2b696d4cc8..3b49227255eb58 100644
--- a/Lib/test/test_importlib/test_main.py
+++ b/Lib/test/test_importlib/test_main.py
@@ -4,7 +4,6 @@
 import warnings
 import importlib.metadata
 import contextlib
-import itertools
 
 try:
     import pyfakefs.fake_filesystem_unittest as ffs
@@ -69,7 +68,7 @@ def test_abc_enforced(self):
         dict(name=''),
     )
     def test_invalid_inputs_to_from_name(self, name):
-        with self.assertRaises(Exception):
+        with self.assertRaises(ValueError):
             Distribution.from_name(name)
 
 
diff --git a/Lib/test/test_importlib/test_namespace_pkgs.py b/Lib/test/test_importlib/test_namespace_pkgs.py
index 65428c3d3ead9b..072e198795d394 100644
--- a/Lib/test/test_importlib/test_namespace_pkgs.py
+++ b/Lib/test/test_importlib/test_namespace_pkgs.py
@@ -6,7 +6,6 @@
 import sys
 import tempfile
 import unittest
-import warnings
 
 from test.test_importlib import util
 
@@ -81,7 +80,7 @@ def test_cant_import_other(self):
 
     def test_simple_repr(self):
         import foo.one
-        assert repr(foo).startswith("<module 'foo' (namespace) from [")
+        self.assertTrue(repr(foo).startswith("<module 'foo' (namespace) from ["))
 
 
 class DynamicPathNamespacePackage(NamespacePackageTest):
diff --git a/Lib/test/test_importlib/test_threaded_import.py b/Lib/test/test_importlib/test_threaded_import.py
index 85c3032aed53b1..5072be86cfd112 100644
--- a/Lib/test/test_importlib/test_threaded_import.py
+++ b/Lib/test/test_importlib/test_threaded_import.py
@@ -13,7 +13,6 @@
 import shutil
 import threading
 import unittest
-from unittest import mock
 from test.support import verbose
 from test.support.import_helper import forget, mock_register_at_fork
 from test.support.os_helper import (TESTFN, unlink, rmtree)
@@ -238,7 +237,8 @@ def target():
         self.addCleanup(forget, TESTFN)
         self.addCleanup(rmtree, '__pycache__')
         importlib.invalidate_caches()
-        __import__(TESTFN)
+        with threading_helper.wait_threads_exit():
+            __import__(TESTFN)
         del sys.modules[TESTFN]
 
     def test_concurrent_futures_circular_import(self):
diff --git a/Lib/test/test_importlib/test_util.py b/Lib/test/test_importlib/test_util.py
index 0be504925ecc6a..914176559806f4 100644
--- a/Lib/test/test_importlib/test_util.py
+++ b/Lib/test/test_importlib/test_util.py
@@ -653,33 +653,27 @@ def test_magic_number(self):
 
 
 @unittest.skipIf(_interpreters is None, 'subinterpreters required')
-class AllowingAllExtensionsTests(unittest.TestCase):
-
-    ERROR = re.compile("^<class 'ImportError'>: module (.*) does not support loading in subinterpreters")
+class IncompatibleExtensionModuleRestrictionsTests(unittest.TestCase):
 
     def run_with_own_gil(self, script):
         interpid = _interpreters.create(isolated=True)
-        try:
-            _interpreters.run_string(interpid, script)
-        except _interpreters.RunFailedError as exc:
-            if m := self.ERROR.match(str(exc)):
-                modname, = m.groups()
-                raise ImportError(modname)
+        excsnap = _interpreters.run_string(interpid, script)
+        if excsnap is not None:
+            if excsnap.type.__name__ == 'ImportError':
+                raise ImportError(excsnap.msg)
 
     def run_with_shared_gil(self, script):
         interpid = _interpreters.create(isolated=False)
-        try:
-            _interpreters.run_string(interpid, script)
-        except _interpreters.RunFailedError as exc:
-            if m := self.ERROR.match(str(exc)):
-                modname, = m.groups()
-                raise ImportError(modname)
+        excsnap = _interpreters.run_string(interpid, script)
+        if excsnap is not None:
+            if excsnap.type.__name__ == 'ImportError':
+                raise ImportError(excsnap.msg)
 
     @unittest.skipIf(_testsinglephase is None, "test requires _testsinglephase module")
     def test_single_phase_init_module(self):
         script = textwrap.dedent('''
-            import importlib.util
-            with importlib.util.allowing_all_extensions():
+            from importlib.util import _incompatible_extension_module_restrictions
+            with _incompatible_extension_module_restrictions(disable_check=True):
                 import _testsinglephase
             ''')
         with self.subTest('check disabled, shared GIL'):
@@ -688,8 +682,8 @@ def test_single_phase_init_module(self):
             self.run_with_own_gil(script)
 
         script = textwrap.dedent(f'''
-            import importlib.util
-            with importlib.util.allowing_all_extensions(False):
+            from importlib.util import _incompatible_extension_module_restrictions
+            with _incompatible_extension_module_restrictions(disable_check=False):
                 import _testsinglephase
             ''')
         with self.subTest('check enabled, shared GIL'):
@@ -713,8 +707,8 @@ def test_incomplete_multi_phase_init_module(self):
             ''')
 
         script = prescript + textwrap.dedent('''
-            import importlib.util
-            with importlib.util.allowing_all_extensions():
+            from importlib.util import _incompatible_extension_module_restrictions
+            with _incompatible_extension_module_restrictions(disable_check=True):
                 module = module_from_spec(spec)
                 loader.exec_module(module)
             ''')
@@ -724,8 +718,8 @@ def test_incomplete_multi_phase_init_module(self):
             self.run_with_own_gil(script)
 
         script = prescript + textwrap.dedent('''
-            import importlib.util
-            with importlib.util.allowing_all_extensions(False):
+            from importlib.util import _incompatible_extension_module_restrictions
+            with _incompatible_extension_module_restrictions(disable_check=False):
                 module = module_from_spec(spec)
                 loader.exec_module(module)
             ''')
@@ -738,8 +732,8 @@ def test_incomplete_multi_phase_init_module(self):
     @unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
     def test_complete_multi_phase_init_module(self):
         script = textwrap.dedent('''
-            import importlib.util
-            with importlib.util.allowing_all_extensions():
+            from importlib.util import _incompatible_extension_module_restrictions
+            with _incompatible_extension_module_restrictions(disable_check=True):
                 import _testmultiphase
             ''')
         with self.subTest('check disabled, shared GIL'):
@@ -748,8 +742,8 @@ def test_complete_multi_phase_init_module(self):
             self.run_with_own_gil(script)
 
         script = textwrap.dedent(f'''
-            import importlib.util
-            with importlib.util.allowing_all_extensions(False):
+            from importlib.util import _incompatible_extension_module_restrictions
+            with _incompatible_extension_module_restrictions(disable_check=False):
                 import _testmultiphase
             ''')
         with self.subTest('check enabled, shared GIL'):
diff --git a/Lib/test/test_importlib/test_windows.py b/Lib/test/test_importlib/test_windows.py
index 40b8aa1787fe08..8a9a8fffcd10d4 100644
--- a/Lib/test/test_importlib/test_windows.py
+++ b/Lib/test/test_importlib/test_windows.py
@@ -5,7 +5,7 @@
 import re
 import sys
 import unittest
-import warnings
+from test import support
 from test.support import import_helper
 from contextlib import contextmanager
 from test.test_importlib.util import temp_module
@@ -112,8 +112,10 @@ def test_module_not_found(self):
 class WindowsExtensionSuffixTests:
     def test_tagged_suffix(self):
         suffixes = self.machinery.EXTENSION_SUFFIXES
-        expected_tag = ".cp{0.major}{0.minor}-{1}.pyd".format(sys.version_info,
-            re.sub('[^a-zA-Z0-9]', '_', get_platform()))
+        abi_flags = "t" if support.Py_GIL_DISABLED else ""
+        ver = sys.version_info
+        platform = re.sub('[^a-zA-Z0-9]', '_', get_platform())
+        expected_tag = f".cp{ver.major}{ver.minor}{abi_flags}-{platform}.pyd"
         try:
             untagged_i = suffixes.index(".pyd")
         except ValueError:
diff --git a/Lib/test/test_inspect/__init__.py b/Lib/test/test_inspect/__init__.py
new file mode 100644
index 00000000000000..f2a39a3fe29c7f
--- /dev/null
+++ b/Lib/test/test_inspect/__init__.py
@@ -0,0 +1,6 @@
+import os
+from test import support
+
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/inspect_fodder.py b/Lib/test/test_inspect/inspect_fodder.py
similarity index 92%
rename from Lib/test/inspect_fodder.py
rename to Lib/test/test_inspect/inspect_fodder.py
index 567dfbab804867..60ba7aa78394e8 100644
--- a/Lib/test/inspect_fodder.py
+++ b/Lib/test/test_inspect/inspect_fodder.py
@@ -113,3 +113,8 @@ async def asyncf(self):
        # after asyncf - line 113
     # end of WhichComments - line 114
   # after WhichComments - line 115
+
+# Test that getsource works on a line that includes
+# a closing parenthesis with the opening paren being in another line
+(
+); after_closing = lambda: 1
diff --git a/Lib/test/inspect_fodder2.py b/Lib/test/test_inspect/inspect_fodder2.py
similarity index 87%
rename from Lib/test/inspect_fodder2.py
rename to Lib/test/test_inspect/inspect_fodder2.py
index 2dc49817087c44..8639cf2e72cd7a 100644
--- a/Lib/test/inspect_fodder2.py
+++ b/Lib/test/test_inspect/inspect_fodder2.py
@@ -273,3 +273,40 @@ def wrapper(*a, **kwd):
 @deco_factory(foo=(1 + 2), bar=lambda: 1)
 def complex_decorated(foo=0, bar=lambda: 0):
     return foo + bar()
+
+# line 276
+parenthesized_lambda = (
+    lambda: ())
+parenthesized_lambda2 = [
+    lambda: ()][0]
+parenthesized_lambda3 = {0:
+    lambda: ()}[0]
+
+# line 285
+post_line_parenthesized_lambda1 = (lambda: ()
+)
+
+# line 289
+nested_lambda = (
+    lambda right: [].map(
+        lambda length: ()))
+
+# line 294
+if True:
+    class cls296:
+        def f():
+            pass
+else:
+    class cls296:
+        def g():
+            pass
+
+# line 304
+if False:
+    class cls310:
+        def f():
+            pass
+else:
+    class cls310:
+        def g():
+            pass
diff --git a/Lib/test/inspect_stock_annotations.py b/Lib/test/test_inspect/inspect_stock_annotations.py
similarity index 100%
rename from Lib/test/inspect_stock_annotations.py
rename to Lib/test/test_inspect/inspect_stock_annotations.py
diff --git a/Lib/test/inspect_stringized_annotations.py b/Lib/test/test_inspect/inspect_stringized_annotations.py
similarity index 100%
rename from Lib/test/inspect_stringized_annotations.py
rename to Lib/test/test_inspect/inspect_stringized_annotations.py
diff --git a/Lib/test/inspect_stringized_annotations_2.py b/Lib/test/test_inspect/inspect_stringized_annotations_2.py
similarity index 100%
rename from Lib/test/inspect_stringized_annotations_2.py
rename to Lib/test/test_inspect/inspect_stringized_annotations_2.py
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect/test_inspect.py
similarity index 91%
rename from Lib/test/test_inspect.py
rename to Lib/test/test_inspect/test_inspect.py
index 364f75db908b05..09d50859970c99 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect/test_inspect.py
@@ -1,6 +1,7 @@
 import asyncio
 import builtins
 import collections
+import copy
 import datetime
 import functools
 import importlib
@@ -13,14 +14,19 @@
 import _pickle
 import pickle
 import shutil
+import stat
 import sys
+import subprocess
+import time
 import types
+import tempfile
 import textwrap
 import unicodedata
 import unittest
 import unittest.mock
 import warnings
 
+
 try:
     from concurrent.futures import ThreadPoolExecutor
 except ImportError:
@@ -28,17 +34,17 @@
 
 from test.support import cpython_only
 from test.support import MISSING_C_DOCSTRINGS, ALWAYS_EQ
-from test.support.import_helper import DirsOnSysPath
+from test.support.import_helper import DirsOnSysPath, ready_to_import
 from test.support.os_helper import TESTFN
-from test.support.script_helper import assert_python_ok, assert_python_failure
-from test import inspect_fodder as mod
-from test import inspect_fodder2 as mod2
+from test.support.script_helper import assert_python_ok, assert_python_failure, kill_python
+from test.support import has_subprocess_support, SuppressCrashReport
 from test import support
-from test import inspect_stock_annotations
-from test import inspect_stringized_annotations
-from test import inspect_stringized_annotations_2
 
-from test.test_import import _ready_to_import
+from . import inspect_fodder as mod
+from . import inspect_fodder2 as mod2
+from . import inspect_stock_annotations
+from . import inspect_stringized_annotations
+from . import inspect_stringized_annotations_2
 
 
 # Functions tested in this suite:
@@ -135,6 +141,14 @@ def gen_coroutine_function_example(self):
     yield
     return 'spam'
 
+def meth_noargs(): pass
+def meth_o(object, /): pass
+def meth_self_noargs(self, /): pass
+def meth_self_o(self, object, /): pass
+def meth_type_noargs(type, /): pass
+def meth_type_o(type, object, /): pass
+
+
 class TestPredicates(IsTestBase):
 
     def test_excluding_predicates(self):
@@ -557,7 +571,8 @@ def test_getclasses(self):
 
     def test_getfunctions(self):
         functions = inspect.getmembers(mod, inspect.isfunction)
-        self.assertEqual(functions, [('eggs', mod.eggs),
+        self.assertEqual(functions, [('after_closing', mod.after_closing),
+                                     ('eggs', mod.eggs),
                                      ('lobbest', mod.lobbest),
                                      ('spam', mod.spam)])
 
@@ -595,9 +610,40 @@ def test_finddoc(self):
         self.assertEqual(finddoc(int.from_bytes), int.from_bytes.__doc__)
         self.assertEqual(finddoc(int.real), int.real.__doc__)
 
+    cleandoc_testdata = [
+        # first line should have different margin
+        (' An\n  indented\n   docstring.', 'An\nindented\n docstring.'),
+        # trailing whitespace are not removed.
+        (' An \n   \n  indented \n   docstring. ',
+         'An \n \nindented \n docstring. '),
+        # NUL is not termination.
+        ('doc\0string\n\n  second\0line\n  third\0line\0',
+         'doc\0string\n\nsecond\0line\nthird\0line\0'),
+        # first line is lstrip()-ped. other lines are kept when no margin.[w:
+        ('   ', ''),
+        # compiler.cleandoc() doesn't strip leading/trailing newlines
+        # to keep maximum backward compatibility.
+        # inspect.cleandoc() removes them.
+        ('\n\n\n  first paragraph\n\n   second paragraph\n\n',
+         '\n\n\nfirst paragraph\n\n second paragraph\n\n'),
+        ('   \n \n  \n   ', '\n \n  \n   '),
+    ]
+
     def test_cleandoc(self):
-        self.assertEqual(inspect.cleandoc('An\n    indented\n    docstring.'),
-                         'An\nindented\ndocstring.')
+        func = inspect.cleandoc
+        for i, (input, expected) in enumerate(self.cleandoc_testdata):
+            # only inspect.cleandoc() strip \n
+            expected = expected.strip('\n')
+            with self.subTest(i=i):
+                self.assertEqual(func(input), expected)
+
+    @cpython_only
+    def test_c_cleandoc(self):
+        import _testinternalcapi
+        func = _testinternalcapi.compiler_cleandoc
+        for i, (input, expected) in enumerate(self.cleandoc_testdata):
+            with self.subTest(i=i):
+                self.assertEqual(func(input), expected)
 
     def test_getcomments(self):
         self.assertEqual(inspect.getcomments(mod), '# line 1\n')
@@ -641,6 +687,7 @@ def test_getsource(self):
         self.assertSourceEqual(git.abuse, 29, 39)
         self.assertSourceEqual(mod.StupidGit, 21, 51)
         self.assertSourceEqual(mod.lobbest, 75, 76)
+        self.assertSourceEqual(mod.after_closing, 120, 120)
 
     def test_getsourcefile(self):
         self.assertEqual(normcase(inspect.getsourcefile(mod.spam)), modfile)
@@ -776,6 +823,22 @@ def test_twoline_indented_lambda(self):
         # where the second line _is_ indented.
         self.assertSourceEqual(mod2.tlli, 33, 34)
 
+    def test_parenthesized_multiline_lambda(self):
+        # Test inspect.getsource with a parenthesized multi-line lambda
+        # function.
+        self.assertSourceEqual(mod2.parenthesized_lambda, 279, 279)
+        self.assertSourceEqual(mod2.parenthesized_lambda2, 281, 281)
+        self.assertSourceEqual(mod2.parenthesized_lambda3, 283, 283)
+
+    def test_post_line_parenthesized_lambda(self):
+        # Test inspect.getsource with a parenthesized multi-line lambda
+        # function.
+        self.assertSourceEqual(mod2.post_line_parenthesized_lambda1, 286, 287)
+
+    def test_nested_lambda(self):
+        # Test inspect.getsource with a nested lambda function.
+        self.assertSourceEqual(mod2.nested_lambda, 291, 292)
+
     def test_onelinefunc(self):
         # Test inspect.getsource with a regular one-line function.
         self.assertSourceEqual(mod2.onelinefunc, 37, 37)
@@ -900,7 +963,6 @@ def test_class_decorator(self):
         self.assertSourceEqual(mod2.cls196.cls200, 198, 201)
 
     def test_class_inside_conditional(self):
-        self.assertSourceEqual(mod2.cls238, 238, 240)
         self.assertSourceEqual(mod2.cls238.cls239, 239, 240)
 
     def test_multiple_children_classes(self):
@@ -915,6 +977,36 @@ def test_nested_class_definition_inside_function(self):
         self.assertSourceEqual(mod2.cls213, 218, 222)
         self.assertSourceEqual(mod2.cls213().func219(), 220, 221)
 
+    def test_class_with_method_from_other_module(self):
+        with tempfile.TemporaryDirectory() as tempdir:
+            with open(os.path.join(tempdir, 'inspect_actual%spy' % os.extsep),
+                      'w', encoding='utf-8') as f:
+                f.write(textwrap.dedent("""
+                    import inspect_other
+                    class A:
+                        def f(self):
+                            pass
+                    class A:
+                        def f(self):
+                            pass  # correct one
+                    A.f = inspect_other.A.f
+                    """))
+
+            with open(os.path.join(tempdir, 'inspect_other%spy' % os.extsep),
+                      'w', encoding='utf-8') as f:
+                f.write(textwrap.dedent("""
+                    class A:
+                        def f(self):
+                            pass
+                    """))
+
+            with DirsOnSysPath(tempdir):
+                import inspect_actual
+                self.assertIn("correct", inspect.getsource(inspect_actual.A))
+                # Remove the module from sys.modules to force it to be reloaded.
+                # This is necessary when the test is run multiple times.
+                sys.modules.pop("inspect_actual")
+
     @unittest.skipIf(
         support.is_emscripten or support.is_wasi,
         "socket.accept is broken"
@@ -926,6 +1018,10 @@ def test_nested_class_definition_inside_async_function(self):
         self.assertSourceEqual(mod2.cls226, 231, 235)
         self.assertSourceEqual(asyncio.run(mod2.cls226().func232()), 233, 234)
 
+    def test_class_definition_same_name_diff_methods(self):
+        self.assertSourceEqual(mod2.cls296, 296, 298)
+        self.assertSourceEqual(mod2.cls310, 310, 312)
+
 class TestNoEOL(GetSourceBase):
     def setUp(self):
         self.tempdir = TESTFN + '_dir'
@@ -1090,6 +1186,47 @@ def test_getfullargspec_builtin_func_no_signature(self):
         with self.assertRaises(TypeError):
             inspect.getfullargspec(builtin)
 
+        cls = _testcapi.DocStringNoSignatureTest
+        obj = _testcapi.DocStringNoSignatureTest()
+        tests = [
+            (_testcapi.docstring_no_signature_noargs, meth_noargs),
+            (_testcapi.docstring_no_signature_o, meth_o),
+            (cls.meth_noargs, meth_self_noargs),
+            (cls.meth_o, meth_self_o),
+            (obj.meth_noargs, meth_self_noargs),
+            (obj.meth_o, meth_self_o),
+            (cls.meth_noargs_class, meth_type_noargs),
+            (cls.meth_o_class, meth_type_o),
+            (cls.meth_noargs_static, meth_noargs),
+            (cls.meth_o_static, meth_o),
+            (cls.meth_noargs_coexist, meth_self_noargs),
+            (cls.meth_o_coexist, meth_self_o),
+
+            (time.time, meth_noargs),
+            (str.lower, meth_self_noargs),
+            (''.lower, meth_self_noargs),
+            (set.add, meth_self_o),
+            (set().add, meth_self_o),
+            (set.__contains__, meth_self_o),
+            (set().__contains__, meth_self_o),
+            (datetime.datetime.__dict__['utcnow'], meth_type_noargs),
+            (datetime.datetime.utcnow, meth_type_noargs),
+            (dict.__dict__['__class_getitem__'], meth_type_o),
+            (dict.__class_getitem__, meth_type_o),
+        ]
+        try:
+            import _stat
+        except ImportError:
+            # if the _stat extension is not available, stat.S_IMODE() is
+            # implemented in Python, not in C
+            pass
+        else:
+            tests.append((stat.S_IMODE, meth_o))
+        for builtin, template in tests:
+            with self.subTest(builtin):
+                self.assertEqual(inspect.getfullargspec(builtin),
+                                 inspect.getfullargspec(template))
+
     def test_getfullargspec_definition_order_preserved_on_kwonly(self):
         for fn in signatures_with_lexicographic_keyword_only_parameters():
             signature = inspect.getfullargspec(fn)
@@ -2052,6 +2189,9 @@ class Foo(object):
         descriptor.__set__ = lambda s, i, v: None
         self.assertEqual(inspect.getattr_static(foo, 'd'), Foo.__dict__['d'])
 
+        del descriptor.__set__
+        descriptor.__delete__ = lambda s, i, o: None
+        self.assertEqual(inspect.getattr_static(foo, 'd'), Foo.__dict__['d'])
 
     def test_metaclass_with_descriptor(self):
         class descriptor(object):
@@ -2244,6 +2384,10 @@ def test_closed_after_immediate_exception(self):
             self.generator.throw(RuntimeError)
         self.assertEqual(self._generatorstate(), inspect.GEN_CLOSED)
 
+    def test_closed_after_close(self):
+        self.generator.close()
+        self.assertEqual(self._generatorstate(), inspect.GEN_CLOSED)
+
     def test_running(self):
         # As mentioned on issue #10220, checking for the RUNNING state only
         # makes sense inside the generator itself.
@@ -2353,6 +2497,10 @@ def test_closed_after_immediate_exception(self):
             self.coroutine.throw(RuntimeError)
         self.assertEqual(self._coroutinestate(), inspect.CORO_CLOSED)
 
+    def test_closed_after_close(self):
+        self.coroutine.close()
+        self.assertEqual(self._coroutinestate(), inspect.CORO_CLOSED)
+
     def test_easy_debugging(self):
         # repr() and str() of a coroutine state should contain the state name
         names = 'CORO_CREATED CORO_RUNNING CORO_SUSPENDED CORO_CLOSED'.split()
@@ -2763,6 +2911,11 @@ class ThisWorksNow:
         # Regression test for issue #20586
         test_callable(_testcapi.docstring_with_signature_but_no_doc)
 
+        # Regression test for gh-104955
+        method = bytearray.__release_buffer__
+        sig = test_unbound_method(method)
+        self.assertEqual(list(sig.parameters), ['self', 'buffer'])
+
     @cpython_only
     @unittest.skipIf(MISSING_C_DOCSTRINGS,
                      "Signature information for builtins requires docstrings")
@@ -2797,6 +2950,47 @@ def test_signature_on_builtins_no_signature(self):
                                     'no signature found for builtin'):
             inspect.signature(str)
 
+        cls = _testcapi.DocStringNoSignatureTest
+        obj = _testcapi.DocStringNoSignatureTest()
+        tests = [
+            (_testcapi.docstring_no_signature_noargs, meth_noargs),
+            (_testcapi.docstring_no_signature_o, meth_o),
+            (cls.meth_noargs, meth_self_noargs),
+            (cls.meth_o, meth_self_o),
+            (obj.meth_noargs, meth_noargs),
+            (obj.meth_o, meth_o),
+            (cls.meth_noargs_class, meth_noargs),
+            (cls.meth_o_class, meth_o),
+            (cls.meth_noargs_static, meth_noargs),
+            (cls.meth_o_static, meth_o),
+            (cls.meth_noargs_coexist, meth_self_noargs),
+            (cls.meth_o_coexist, meth_self_o),
+
+            (time.time, meth_noargs),
+            (str.lower, meth_self_noargs),
+            (''.lower, meth_noargs),
+            (set.add, meth_self_o),
+            (set().add, meth_o),
+            (set.__contains__, meth_self_o),
+            (set().__contains__, meth_o),
+            (datetime.datetime.__dict__['utcnow'], meth_type_noargs),
+            (datetime.datetime.utcnow, meth_noargs),
+            (dict.__dict__['__class_getitem__'], meth_type_o),
+            (dict.__class_getitem__, meth_o),
+        ]
+        try:
+            import _stat
+        except ImportError:
+            # if the _stat extension is not available, stat.S_IMODE() is
+            # implemented in Python, not in C
+            pass
+        else:
+            tests.append((stat.S_IMODE, meth_o))
+        for builtin, template in tests:
+            with self.subTest(builtin):
+                self.assertEqual(inspect.signature(builtin),
+                                 inspect.signature(template))
+
     def test_signature_on_non_function(self):
         with self.assertRaisesRegex(TypeError, 'is not a callable object'):
             inspect.signature(42)
@@ -3602,26 +3796,36 @@ def foo(a:int=1, *, b, c=None, **kwargs) -> 42:
             pass
         self.assertEqual(str(inspect.signature(foo)),
                          '(a: int = 1, *, b, c=None, **kwargs) -> 42')
+        self.assertEqual(str(inspect.signature(foo)),
+                         inspect.signature(foo).format())
 
         def foo(a:int=1, *args, b, c=None, **kwargs) -> 42:
             pass
         self.assertEqual(str(inspect.signature(foo)),
                          '(a: int = 1, *args, b, c=None, **kwargs) -> 42')
+        self.assertEqual(str(inspect.signature(foo)),
+                         inspect.signature(foo).format())
 
         def foo():
             pass
         self.assertEqual(str(inspect.signature(foo)), '()')
+        self.assertEqual(str(inspect.signature(foo)),
+                         inspect.signature(foo).format())
 
         def foo(a: list[str]) -> tuple[str, float]:
             pass
         self.assertEqual(str(inspect.signature(foo)),
                          '(a: list[str]) -> tuple[str, float]')
+        self.assertEqual(str(inspect.signature(foo)),
+                         inspect.signature(foo).format())
 
         from typing import Tuple
         def foo(a: list[str]) -> Tuple[str, float]:
             pass
         self.assertEqual(str(inspect.signature(foo)),
                          '(a: list[str]) -> Tuple[str, float]')
+        self.assertEqual(str(inspect.signature(foo)),
+                         inspect.signature(foo).format())
 
     def test_signature_str_positional_only(self):
         P = inspect.Parameter
@@ -3632,19 +3836,107 @@ def test(a_po, /, *, b, **kwargs):
 
         self.assertEqual(str(inspect.signature(test)),
                          '(a_po, /, *, b, **kwargs)')
+        self.assertEqual(str(inspect.signature(test)),
+                         inspect.signature(test).format())
+
+        test = S(parameters=[P('foo', P.POSITIONAL_ONLY)])
+        self.assertEqual(str(test), '(foo, /)')
+        self.assertEqual(str(test), test.format())
+
+        test = S(parameters=[P('foo', P.POSITIONAL_ONLY),
+                             P('bar', P.VAR_KEYWORD)])
+        self.assertEqual(str(test), '(foo, /, **bar)')
+        self.assertEqual(str(test), test.format())
 
-        self.assertEqual(str(S(parameters=[P('foo', P.POSITIONAL_ONLY)])),
-                         '(foo, /)')
+        test = S(parameters=[P('foo', P.POSITIONAL_ONLY),
+                             P('bar', P.VAR_POSITIONAL)])
+        self.assertEqual(str(test), '(foo, /, *bar)')
+        self.assertEqual(str(test), test.format())
 
-        self.assertEqual(str(S(parameters=[
-                                P('foo', P.POSITIONAL_ONLY),
-                                P('bar', P.VAR_KEYWORD)])),
-                         '(foo, /, **bar)')
+    def test_signature_format(self):
+        from typing import Annotated, Literal
 
-        self.assertEqual(str(S(parameters=[
-                                P('foo', P.POSITIONAL_ONLY),
-                                P('bar', P.VAR_POSITIONAL)])),
-                         '(foo, /, *bar)')
+        def func(x: Annotated[int, 'meta'], y: Literal['a', 'b'], z: 'LiteralString'):
+            pass
+
+        expected_singleline = "(x: Annotated[int, 'meta'], y: Literal['a', 'b'], z: 'LiteralString')"
+        expected_multiline = """(
+    x: Annotated[int, 'meta'],
+    y: Literal['a', 'b'],
+    z: 'LiteralString'
+)"""
+        self.assertEqual(
+            inspect.signature(func).format(),
+            expected_singleline,
+        )
+        self.assertEqual(
+            inspect.signature(func).format(max_width=None),
+            expected_singleline,
+        )
+        self.assertEqual(
+            inspect.signature(func).format(max_width=len(expected_singleline)),
+            expected_singleline,
+        )
+        self.assertEqual(
+            inspect.signature(func).format(max_width=len(expected_singleline) - 1),
+            expected_multiline,
+        )
+        self.assertEqual(
+            inspect.signature(func).format(max_width=0),
+            expected_multiline,
+        )
+        self.assertEqual(
+            inspect.signature(func).format(max_width=-1),
+            expected_multiline,
+        )
+
+    def test_signature_format_all_arg_types(self):
+        from typing import Annotated, Literal
+
+        def func(
+            x: Annotated[int, 'meta'],
+            /,
+            y: Literal['a', 'b'],
+            *,
+            z: 'LiteralString',
+            **kwargs: object,
+        ) -> None:
+            pass
+
+        expected_multiline = """(
+    x: Annotated[int, 'meta'],
+    /,
+    y: Literal['a', 'b'],
+    *,
+    z: 'LiteralString',
+    **kwargs: object
+) -> None"""
+        self.assertEqual(
+            inspect.signature(func).format(max_width=-1),
+            expected_multiline,
+        )
+
+    def test_signature_replace_parameters(self):
+        def test(a, b) -> 42:
+            pass
+
+        sig = inspect.signature(test)
+        parameters = sig.parameters
+        sig = sig.replace(parameters=list(parameters.values())[1:])
+        self.assertEqual(list(sig.parameters), ['b'])
+        self.assertEqual(sig.parameters['b'], parameters['b'])
+        self.assertEqual(sig.return_annotation, 42)
+        sig = sig.replace(parameters=())
+        self.assertEqual(dict(sig.parameters), {})
+
+        sig = inspect.signature(test)
+        parameters = sig.parameters
+        sig = copy.replace(sig, parameters=list(parameters.values())[1:])
+        self.assertEqual(list(sig.parameters), ['b'])
+        self.assertEqual(sig.parameters['b'], parameters['b'])
+        self.assertEqual(sig.return_annotation, 42)
+        sig = copy.replace(sig, parameters=())
+        self.assertEqual(dict(sig.parameters), {})
 
     def test_signature_replace_anno(self):
         def test() -> 42:
@@ -3659,6 +3951,15 @@ def test() -> 42:
         self.assertEqual(sig.return_annotation, 42)
         self.assertEqual(sig, inspect.signature(test))
 
+        sig = inspect.signature(test)
+        sig = copy.replace(sig, return_annotation=None)
+        self.assertIs(sig.return_annotation, None)
+        sig = copy.replace(sig, return_annotation=sig.empty)
+        self.assertIs(sig.return_annotation, sig.empty)
+        sig = copy.replace(sig, return_annotation=42)
+        self.assertEqual(sig.return_annotation, 42)
+        self.assertEqual(sig, inspect.signature(test))
+
     def test_signature_replaced(self):
         def test():
             pass
@@ -3901,6 +4202,24 @@ def __signature__():
                            ('b', 2, ..., 'positional_or_keyword')),
                           ...))
 
+    def test_signature_on_derived_classes(self):
+        # gh-105080: Make sure that signatures are consistent on derived classes
+
+        class B:
+            def __new__(self, *args, **kwargs):
+                return super().__new__(self)
+            def __init__(self, value):
+                self.value = value
+
+        class D1(B):
+            def __init__(self, value):
+                super().__init__(value)
+
+        class D2(D1):
+            pass
+
+        self.assertEqual(inspect.signature(D2), inspect.signature(D1))
+
 
 class TestParameterObject(unittest.TestCase):
     def test_signature_parameter_kinds(self):
@@ -3985,41 +4304,66 @@ def test_signature_parameter_replace(self):
         p = inspect.Parameter('foo', default=42,
                               kind=inspect.Parameter.KEYWORD_ONLY)
 
-        self.assertIsNot(p, p.replace())
-        self.assertEqual(p, p.replace())
+        self.assertIsNot(p.replace(), p)
+        self.assertEqual(p.replace(), p)
+        self.assertIsNot(copy.replace(p), p)
+        self.assertEqual(copy.replace(p), p)
 
         p2 = p.replace(annotation=1)
         self.assertEqual(p2.annotation, 1)
         p2 = p2.replace(annotation=p2.empty)
-        self.assertEqual(p, p2)
+        self.assertEqual(p2, p)
+        p3 = copy.replace(p, annotation=1)
+        self.assertEqual(p3.annotation, 1)
+        p3 = copy.replace(p3, annotation=p3.empty)
+        self.assertEqual(p3, p)
 
         p2 = p2.replace(name='bar')
         self.assertEqual(p2.name, 'bar')
         self.assertNotEqual(p2, p)
+        p3 = copy.replace(p3, name='bar')
+        self.assertEqual(p3.name, 'bar')
+        self.assertNotEqual(p3, p)
 
         with self.assertRaisesRegex(ValueError,
                                     'name is a required attribute'):
             p2 = p2.replace(name=p2.empty)
+        with self.assertRaisesRegex(ValueError,
+                                    'name is a required attribute'):
+            p3 = copy.replace(p3, name=p3.empty)
 
         p2 = p2.replace(name='foo', default=None)
         self.assertIs(p2.default, None)
         self.assertNotEqual(p2, p)
+        p3 = copy.replace(p3, name='foo', default=None)
+        self.assertIs(p3.default, None)
+        self.assertNotEqual(p3, p)
 
         p2 = p2.replace(name='foo', default=p2.empty)
         self.assertIs(p2.default, p2.empty)
-
+        p3 = copy.replace(p3, name='foo', default=p3.empty)
+        self.assertIs(p3.default, p3.empty)
 
         p2 = p2.replace(default=42, kind=p2.POSITIONAL_OR_KEYWORD)
         self.assertEqual(p2.kind, p2.POSITIONAL_OR_KEYWORD)
         self.assertNotEqual(p2, p)
+        p3 = copy.replace(p3, default=42, kind=p3.POSITIONAL_OR_KEYWORD)
+        self.assertEqual(p3.kind, p3.POSITIONAL_OR_KEYWORD)
+        self.assertNotEqual(p3, p)
 
         with self.assertRaisesRegex(ValueError,
                                     "value <class 'inspect._empty'> "
                                     "is not a valid Parameter.kind"):
             p2 = p2.replace(kind=p2.empty)
+        with self.assertRaisesRegex(ValueError,
+                                    "value <class 'inspect._empty'> "
+                                    "is not a valid Parameter.kind"):
+            p3 = copy.replace(p3, kind=p3.empty)
 
         p2 = p2.replace(kind=p2.KEYWORD_ONLY)
         self.assertEqual(p2, p)
+        p3 = copy.replace(p3, kind=p3.KEYWORD_ONLY)
+        self.assertEqual(p3, p)
 
     def test_signature_parameter_positional_only(self):
         with self.assertRaisesRegex(TypeError, 'name must be a str'):
@@ -4473,19 +4817,15 @@ def test_builtins_have_signatures(self):
         # These have unrepresentable parameter default values of NULL
         needs_null = {"anext"}
         no_signature |= needs_null
-        # These need PEP 457 groups or a signature change to accept None
-        needs_semantic_update = {"round"}
-        no_signature |= needs_semantic_update
         # These need *args support in Argument Clinic
-        needs_varargs = {"breakpoint", "min", "max", "print",
-                         "__build_class__"}
+        needs_varargs = {"min", "max", "__build_class__"}
         no_signature |= needs_varargs
-        # These simply weren't covered in the initial AC conversion
-        # for builtin callables
-        not_converted_yet = {"open", "__import__"}
-        no_signature |= not_converted_yet
         # These builtin types are expected to provide introspection info
-        types_with_signatures = set()
+        types_with_signatures = {
+            'bool', 'classmethod', 'complex', 'enumerate', 'filter', 'float',
+            'frozenset', 'list', 'map', 'memoryview', 'object', 'property',
+            'reversed', 'set', 'staticmethod', 'tuple', 'zip'
+        }
         # Check the signatures we expect to be there
         ns = vars(builtins)
         for name, obj in sorted(ns.items()):
@@ -4498,15 +4838,19 @@ def test_builtins_have_signatures(self):
             if (name in no_signature):
                 # Not yet converted
                 continue
+            if name in {'classmethod', 'staticmethod'}:
+                # Bug gh-112006: inspect.unwrap() does not work with types
+                # with the __wrapped__ data descriptor.
+                continue
             with self.subTest(builtin=name):
                 self.assertIsNotNone(inspect.signature(obj))
         # Check callables that haven't been converted don't claim a signature
         # This ensures this test will start failing as more signatures are
         # added, so the affected items can be moved into the scope of the
         # regression test above
-        for name in no_signature:
+        for name in no_signature - needs_null:
             with self.subTest(builtin=name):
-                self.assertIsNone(obj.__text_signature__)
+                self.assertIsNone(ns[name].__text_signature__)
 
     def test_python_function_override_signature(self):
         def func(*args, **kwargs):
@@ -4540,7 +4884,7 @@ def func(*args, **kwargs):
 
     def test_base_class_have_text_signature(self):
         # see issue 43118
-        from test.ann_module7 import BufferedReader
+        from test.typinganndata.ann_module7 import BufferedReader
         class MyBufferedReader(BufferedReader):
             """buffer reader class."""
 
@@ -4695,7 +5039,7 @@ def assertInspectEqual(self, path, source):
 
     def test_getsource_reload(self):
         # see issue 1218234
-        with _ready_to_import('reload_bug', self.src_before) as (name, path):
+        with ready_to_import('reload_bug', self.src_before) as (name, path):
             module = importlib.import_module(name)
             self.assertInspectEqual(path, module)
             with open(path, 'w', encoding='utf-8') as src:
@@ -4703,5 +5047,66 @@ def test_getsource_reload(self):
             self.assertInspectEqual(path, module)
 
 
+class TestRepl(unittest.TestCase):
+
+    def spawn_repl(self, *args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kw):
+        """Run the Python REPL with the given arguments.
+
+        kw is extra keyword args to pass to subprocess.Popen. Returns a Popen
+        object.
+        """
+
+        # To run the REPL without using a terminal, spawn python with the command
+        # line option '-i' and the process name set to '<stdin>'.
+        # The directory of argv[0] must match the directory of the Python
+        # executable for the Popen() call to python to succeed as the directory
+        # path may be used by Py_GetPath() to build the default module search
+        # path.
+        stdin_fname = os.path.join(os.path.dirname(sys.executable), "<stdin>")
+        cmd_line = [stdin_fname, '-E', '-i']
+        cmd_line.extend(args)
+
+        # Set TERM=vt100, for the rationale see the comments in spawn_python() of
+        # test.support.script_helper.
+        env = kw.setdefault('env', dict(os.environ))
+        env['TERM'] = 'vt100'
+        return subprocess.Popen(cmd_line,
+                                executable=sys.executable,
+                                text=True,
+                                stdin=subprocess.PIPE,
+                                stdout=stdout, stderr=stderr,
+                                **kw)
+
+    def run_on_interactive_mode(self, source):
+        """Spawn a new Python interpreter, pass the given
+        input source code from the stdin and return the
+        result back. If the interpreter exits non-zero, it
+        raises a ValueError."""
+
+        process = self.spawn_repl()
+        process.stdin.write(source)
+        output = kill_python(process)
+
+        if process.returncode != 0:
+            raise ValueError("Process didn't exit properly.")
+        return output
+
+    @unittest.skipIf(not has_subprocess_support, "test requires subprocess")
+    def test_getsource(self):
+        output = self.run_on_interactive_mode(textwrap.dedent("""\
+        def f():
+            print(0)
+            return 1 + 2
+
+        import inspect
+        print(f"The source is: <<<{inspect.getsource(f)}>>>")
+        """))
+
+        expected = "The source is: <<<def f():\n    print(0)\n    return 1 + 2\n>>>"
+        self.assertIn(expected, output)
+
+
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_interpreters.py b/Lib/test/test_interpreters.py
index d1bebe47158322..5663706c0ccfb7 100644
--- a/Lib/test/test_interpreters.py
+++ b/Lib/test/test_interpreters.py
@@ -1,5 +1,8 @@
 import contextlib
+import json
 import os
+import os.path
+import sys
 import threading
 from textwrap import dedent
 import unittest
@@ -7,6 +10,8 @@
 
 from test import support
 from test.support import import_helper
+from test.support import threading_helper
+from test.support import os_helper
 _interpreters = import_helper.import_module('_xxsubinterpreters')
 _channels = import_helper.import_module('_xxinterpchannels')
 from test.support import interpreters
@@ -63,6 +68,17 @@ def run():
 
 class TestBase(unittest.TestCase):
 
+    def pipe(self):
+        def ensure_closed(fd):
+            try:
+                os.close(fd)
+            except OSError:
+                pass
+        r, w = os.pipe()
+        self.addCleanup(lambda: ensure_closed(r))
+        self.addCleanup(lambda: ensure_closed(w))
+        return r, w
+
     def tearDown(self):
         clean_up_interpreters()
 
@@ -256,6 +272,16 @@ def test_subinterpreter(self):
             self.assertTrue(interp.is_running())
         self.assertFalse(interp.is_running())
 
+    def test_finished(self):
+        r, w = self.pipe()
+        interp = interpreters.create()
+        interp.run(f"""if True:
+            import os
+            os.write({w}, b'x')
+            """)
+        self.assertFalse(interp.is_running())
+        self.assertEqual(os.read(r, 1), b'x')
+
     def test_from_subinterpreter(self):
         interp = interpreters.create()
         out = _run_output(interp, dedent(f"""
@@ -283,6 +309,31 @@ def test_bad_id(self):
         with self.assertRaises(ValueError):
             interp.is_running()
 
+    def test_with_only_background_threads(self):
+        r_interp, w_interp = self.pipe()
+        r_thread, w_thread = self.pipe()
+
+        DONE = b'D'
+        FINISHED = b'F'
+
+        interp = interpreters.create()
+        interp.run(f"""if True:
+            import os
+            import threading
+
+            def task():
+                v = os.read({r_thread}, 1)
+                assert v == {DONE!r}
+                os.write({w_interp}, {FINISHED!r})
+            t = threading.Thread(target=task)
+            t.start()
+            """)
+        self.assertFalse(interp.is_running())
+
+        os.write(w_thread, DONE)
+        interp.run('t.join()')
+        self.assertEqual(os.read(r_interp, 1), FINISHED)
+
 
 class TestInterpreterClose(TestBase):
 
@@ -384,6 +435,37 @@ def test_still_running(self):
                 interp.close()
             self.assertTrue(interp.is_running())
 
+    def test_subthreads_still_running(self):
+        r_interp, w_interp = self.pipe()
+        r_thread, w_thread = self.pipe()
+
+        FINISHED = b'F'
+
+        interp = interpreters.create()
+        interp.run(f"""if True:
+            import os
+            import threading
+            import time
+
+            done = False
+
+            def notify_fini():
+                global done
+                done = True
+                t.join()
+            threading._register_atexit(notify_fini)
+
+            def task():
+                while not done:
+                    time.sleep(0.1)
+                os.write({w_interp}, {FINISHED!r})
+            t = threading.Thread(target=task)
+            t.start()
+            """)
+        interp.close()
+
+        self.assertEqual(os.read(r_interp, 1), FINISHED)
+
 
 class TestInterpreterRun(TestBase):
 
@@ -396,6 +478,11 @@ def test_success(self):
 
         self.assertEqual(out, 'it worked!')
 
+    def test_failure(self):
+        interp = interpreters.create()
+        with self.assertRaises(interpreters.RunFailedError):
+            interp.run('raise Exception')
+
     def test_in_thread(self):
         interp = interpreters.create()
         script, file = _captured_script('print("it worked!", end="")')
@@ -460,9 +547,231 @@ def test_bytes_for_script(self):
         with self.assertRaises(TypeError):
             interp.run(b'print("spam")')
 
+    def test_with_background_threads_still_running(self):
+        r_interp, w_interp = self.pipe()
+        r_thread, w_thread = self.pipe()
+
+        RAN = b'R'
+        DONE = b'D'
+        FINISHED = b'F'
+
+        interp = interpreters.create()
+        interp.run(f"""if True:
+            import os
+            import threading
+
+            def task():
+                v = os.read({r_thread}, 1)
+                assert v == {DONE!r}
+                os.write({w_interp}, {FINISHED!r})
+            t = threading.Thread(target=task)
+            t.start()
+            os.write({w_interp}, {RAN!r})
+            """)
+        interp.run(f"""if True:
+            os.write({w_interp}, {RAN!r})
+            """)
+
+        os.write(w_thread, DONE)
+        interp.run('t.join()')
+        self.assertEqual(os.read(r_interp, 1), RAN)
+        self.assertEqual(os.read(r_interp, 1), RAN)
+        self.assertEqual(os.read(r_interp, 1), FINISHED)
+
     # test_xxsubinterpreters covers the remaining Interpreter.run() behavior.
 
 
+class StressTests(TestBase):
+
+    # In these tests we generally want a lot of interpreters,
+    # but not so many that any test takes too long.
+
+    @support.requires_resource('cpu')
+    def test_create_many_sequential(self):
+        alive = []
+        for _ in range(100):
+            interp = interpreters.create()
+            alive.append(interp)
+
+    @support.requires_resource('cpu')
+    def test_create_many_threaded(self):
+        alive = []
+        def task():
+            interp = interpreters.create()
+            alive.append(interp)
+        threads = (threading.Thread(target=task) for _ in range(200))
+        with threading_helper.start_threads(threads):
+            pass
+
+
+class StartupTests(TestBase):
+
+    # We want to ensure the initial state of subinterpreters
+    # matches expectations.
+
+    _subtest_count = 0
+
+    @contextlib.contextmanager
+    def subTest(self, *args):
+        with super().subTest(*args) as ctx:
+            self._subtest_count += 1
+            try:
+                yield ctx
+            finally:
+                if self._debugged_in_subtest:
+                    if self._subtest_count == 1:
+                        # The first subtest adds a leading newline, so we
+                        # compensate here by not printing a trailing newline.
+                        print('### end subtest debug ###', end='')
+                    else:
+                        print('### end subtest debug ###')
+                self._debugged_in_subtest = False
+
+    def debug(self, msg, *, header=None):
+        if header:
+            self._debug(f'--- {header} ---')
+            if msg:
+                if msg.endswith(os.linesep):
+                    self._debug(msg[:-len(os.linesep)])
+                else:
+                    self._debug(msg)
+                    self._debug('<no newline>')
+            self._debug('------')
+        else:
+            self._debug(msg)
+
+    _debugged = False
+    _debugged_in_subtest = False
+    def _debug(self, msg):
+        if not self._debugged:
+            print()
+            self._debugged = True
+        if self._subtest is not None:
+            if True:
+                if not self._debugged_in_subtest:
+                    self._debugged_in_subtest = True
+                    print('### start subtest debug ###')
+                print(msg)
+        else:
+            print(msg)
+
+    def create_temp_dir(self):
+        import tempfile
+        tmp = tempfile.mkdtemp(prefix='test_interpreters_')
+        tmp = os.path.realpath(tmp)
+        self.addCleanup(os_helper.rmtree, tmp)
+        return tmp
+
+    def write_script(self, *path, text):
+        filename = os.path.join(*path)
+        dirname = os.path.dirname(filename)
+        if dirname:
+            os.makedirs(dirname, exist_ok=True)
+        with open(filename, 'w', encoding='utf-8') as outfile:
+            outfile.write(dedent(text))
+        return filename
+
+    @support.requires_subprocess()
+    def run_python(self, argv, *, cwd=None):
+        # This method is inspired by
+        # EmbeddingTestsMixin.run_embedded_interpreter() in test_embed.py.
+        import shlex
+        import subprocess
+        if isinstance(argv, str):
+            argv = shlex.split(argv)
+        argv = [sys.executable, *argv]
+        try:
+            proc = subprocess.run(
+                argv,
+                cwd=cwd,
+                capture_output=True,
+                text=True,
+            )
+        except Exception as exc:
+            self.debug(f'# cmd: {shlex.join(argv)}')
+            if isinstance(exc, FileNotFoundError) and not exc.filename:
+                if os.path.exists(argv[0]):
+                    exists = 'exists'
+                else:
+                    exists = 'does not exist'
+                self.debug(f'{argv[0]} {exists}')
+            raise  # re-raise
+        assert proc.stderr == '' or proc.returncode != 0, proc.stderr
+        if proc.returncode != 0 and support.verbose:
+            self.debug(f'# python3 {shlex.join(argv[1:])} failed:')
+            self.debug(proc.stdout, header='stdout')
+            self.debug(proc.stderr, header='stderr')
+        self.assertEqual(proc.returncode, 0)
+        self.assertEqual(proc.stderr, '')
+        return proc.stdout
+
+    def test_sys_path_0(self):
+        # The main interpreter's sys.path[0] should be used by subinterpreters.
+        script = '''
+            import sys
+            from test.support import interpreters
+
+            orig = sys.path[0]
+
+            interp = interpreters.create()
+            interp.run(f"""if True:
+                import json
+                import sys
+                print(json.dumps({{
+                    'main': {orig!r},
+                    'sub': sys.path[0],
+                }}, indent=4), flush=True)
+                """)
+            '''
+        # <tmp>/
+        #   pkg/
+        #     __init__.py
+        #     __main__.py
+        #     script.py
+        #   script.py
+        cwd = self.create_temp_dir()
+        self.write_script(cwd, 'pkg', '__init__.py', text='')
+        self.write_script(cwd, 'pkg', '__main__.py', text=script)
+        self.write_script(cwd, 'pkg', 'script.py', text=script)
+        self.write_script(cwd, 'script.py', text=script)
+
+        cases = [
+            ('script.py', cwd),
+            ('-m script', cwd),
+            ('-m pkg', cwd),
+            ('-m pkg.script', cwd),
+            ('-c "import script"', ''),
+        ]
+        for argv, expected in cases:
+            with self.subTest(f'python3 {argv}'):
+                out = self.run_python(argv, cwd=cwd)
+                data = json.loads(out)
+                sp0_main, sp0_sub = data['main'], data['sub']
+                self.assertEqual(sp0_sub, sp0_main)
+                self.assertEqual(sp0_sub, expected)
+        # XXX Also check them all with the -P cmdline flag?
+
+
+class FinalizationTests(TestBase):
+
+    def test_gh_109793(self):
+        import subprocess
+        argv = [sys.executable, '-c', '''if True:
+            import _xxsubinterpreters as _interpreters
+            interpid = _interpreters.create()
+            raise Exception
+            ''']
+        proc = subprocess.run(argv, capture_output=True, text=True)
+        self.assertIn('Traceback', proc.stderr)
+        if proc.returncode == 0 and support.verbose:
+            print()
+            print("--- cmd unexpected succeeded ---")
+            print(f"stdout:\n{proc.stdout}")
+            print(f"stderr:\n{proc.stderr}")
+            print("------")
+        self.assertEqual(proc.returncode, 1)
+
+
 class TestIsShareable(TestBase):
 
     def test_default_shareables(self):
@@ -474,6 +783,11 @@ def test_default_shareables(self):
                 'spam',
                 10,
                 -10,
+                True,
+                False,
+                100.0,
+                (),
+                (1, ('spam', 'eggs'), True),
                 ]
         for obj in shareables:
             with self.subTest(obj):
@@ -492,8 +806,6 @@ class SubBytes(bytes):
 
         not_shareables = [
                 # singletons
-                True,
-                False,
                 NotImplemented,
                 ...,
                 # builtin types and objects
@@ -501,7 +813,6 @@ class SubBytes(bytes):
                 object,
                 object(),
                 Exception(),
-                100.0,
                 # user-defined types and objects
                 Cheese,
                 Cheese('Wensleydale'),
@@ -529,6 +840,35 @@ def test_list_all(self):
         after = set(interpreters.list_all_channels())
         self.assertEqual(after, created)
 
+    def test_shareable(self):
+        rch, sch = interpreters.create_channel()
+
+        self.assertTrue(
+            interpreters.is_shareable(rch))
+        self.assertTrue(
+            interpreters.is_shareable(sch))
+
+        sch.send_nowait(rch)
+        sch.send_nowait(sch)
+        rch2 = rch.recv()
+        sch2 = rch.recv()
+
+        self.assertEqual(rch2, rch)
+        self.assertEqual(sch2, sch)
+
+    def test_is_closed(self):
+        rch, sch = interpreters.create_channel()
+        rbefore = rch.is_closed
+        sbefore = sch.is_closed
+        rch.close()
+        rafter = rch.is_closed
+        safter = sch.is_closed
+
+        self.assertFalse(rbefore)
+        self.assertFalse(sbefore)
+        self.assertTrue(rafter)
+        self.assertTrue(safter)
+
 
 class TestRecvChannelAttrs(TestBase):
 
@@ -643,8 +983,8 @@ def f():
 
         orig = b'spam'
         s.send(orig)
-        t.join()
         obj = r.recv()
+        t.join()
 
         self.assertEqual(obj, orig)
         self.assertIsNot(obj, orig)
@@ -701,6 +1041,11 @@ def test_send_recv_nowait_different_interpreters(self):
         self.assertEqual(obj2, b'eggs')
         self.assertNotEqual(id(obj2), int(out))
 
+    def test_recv_timeout(self):
+        r, _ = interpreters.create_channel()
+        with self.assertRaises(TimeoutError):
+            r.recv(timeout=1)
+
     def test_recv_channel_does_not_exist(self):
         ch = interpreters.RecvChannel(1_000_000)
         with self.assertRaises(interpreters.ChannelNotFoundError):
@@ -746,3 +1091,46 @@ def test_recv_nowait_default(self):
         self.assertEqual(obj4, b'spam')
         self.assertEqual(obj5, b'eggs')
         self.assertIs(obj6, default)
+
+    def test_send_buffer(self):
+        buf = bytearray(b'spamspamspam')
+        obj = None
+        rch, sch = interpreters.create_channel()
+
+        def f():
+            nonlocal obj
+            while True:
+                try:
+                    obj = rch.recv()
+                    break
+                except interpreters.ChannelEmptyError:
+                    time.sleep(0.1)
+        t = threading.Thread(target=f)
+        t.start()
+
+        sch.send_buffer(buf)
+        t.join()
+
+        self.assertIsNot(obj, buf)
+        self.assertIsInstance(obj, memoryview)
+        self.assertEqual(obj, buf)
+
+        buf[4:8] = b'eggs'
+        self.assertEqual(obj, buf)
+        obj[4:8] = b'ham.'
+        self.assertEqual(obj, buf)
+
+    def test_send_buffer_nowait(self):
+        buf = bytearray(b'spamspamspam')
+        rch, sch = interpreters.create_channel()
+        sch.send_buffer_nowait(buf)
+        obj = rch.recv()
+
+        self.assertIsNot(obj, buf)
+        self.assertIsInstance(obj, memoryview)
+        self.assertEqual(obj, buf)
+
+        buf[4:8] = b'eggs'
+        self.assertEqual(obj, buf)
+        obj[4:8] = b'ham.'
+        self.assertEqual(obj, buf)
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index cc16804fe21829..09cced9baef99b 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -66,10 +66,6 @@ def byteslike(*pos, **kw):
     class EmptyStruct(ctypes.Structure):
         pass
 
-# Does io.IOBase finalizer log the exception if the close() method fails?
-# The exception is ignored silently by default in release build.
-IOBASE_EMITS_UNRAISABLE = (support.Py_DEBUG or sys.flags.dev_mode)
-
 
 def _default_chunk_size():
     """Get the default TextIOWrapper chunk size"""
@@ -81,6 +77,10 @@ def _default_chunk_size():
 )
 
 
+class BadIndex:
+    def __index__(self):
+        1/0
+
 class MockRawIOWithoutRead:
     """A RawIO implementation without read(), so as to exercise the default
     RawIO.read() which calls readinto()."""
@@ -1218,10 +1218,7 @@ def test_error_through_destructor(self):
             with self.assertRaises(AttributeError):
                 self.tp(rawio).xyzzy
 
-            if not IOBASE_EMITS_UNRAISABLE:
-                self.assertIsNone(cm.unraisable)
-            elif cm.unraisable is not None:
-                self.assertEqual(cm.unraisable.exc_type, OSError)
+            self.assertEqual(cm.unraisable.exc_type, OSError)
 
     def test_repr(self):
         raw = self.MockRawIO()
@@ -1237,11 +1234,9 @@ def test_recursive_repr(self):
         # Issue #25455
         raw = self.MockRawIO()
         b = self.tp(raw)
-        with support.swap_attr(raw, 'name', b):
-            try:
+        with support.swap_attr(raw, 'name', b), support.infinite_recursion(25):
+            with self.assertRaises(RuntimeError):
                 repr(b)  # Should not crash
-            except RuntimeError:
-                pass
 
     def test_flush_error_on_close(self):
         # Test that buffered file is closed despite failed flush
@@ -1548,8 +1543,8 @@ def test_read_all(self):
 
         self.assertEqual(b"abcdefg", bufio.read())
 
-    @support.requires_resource('cpu')
     @threading_helper.requires_working_threading()
+    @support.requires_resource('cpu')
     def test_threads(self):
         try:
             # Write out many bytes with exactly the same number of 0's,
@@ -1937,8 +1932,8 @@ def test_truncate_after_write(self):
                 f.truncate()
                 self.assertEqual(f.tell(), buffer_size + 2)
 
-    @support.requires_resource('cpu')
     @threading_helper.requires_working_threading()
+    @support.requires_resource('cpu')
     def test_threads(self):
         try:
             # Write out many bytes from many threads and test they were
@@ -2716,8 +2711,29 @@ def test_constructor(self):
         self.assertEqual(t.encoding, "utf-8")
         self.assertEqual(t.line_buffering, True)
         self.assertEqual("\xe9\n", t.readline())
-        self.assertRaises(TypeError, t.__init__, b, encoding="utf-8", newline=42)
-        self.assertRaises(ValueError, t.__init__, b, encoding="utf-8", newline='xyzzy')
+        invalid_type = TypeError if self.is_C else ValueError
+        with self.assertRaises(invalid_type):
+            t.__init__(b, encoding=42)
+        with self.assertRaises(UnicodeEncodeError):
+            t.__init__(b, encoding='\udcfe')
+        with self.assertRaises(ValueError):
+            t.__init__(b, encoding='utf-8\0')
+        with self.assertRaises(invalid_type):
+            t.__init__(b, encoding="utf-8", errors=42)
+        if support.Py_DEBUG or sys.flags.dev_mode or self.is_C:
+            with self.assertRaises(UnicodeEncodeError):
+                t.__init__(b, encoding="utf-8", errors='\udcfe')
+        if support.Py_DEBUG or sys.flags.dev_mode or self.is_C:
+            with self.assertRaises(ValueError):
+                t.__init__(b, encoding="utf-8", errors='replace\0')
+        with self.assertRaises(TypeError):
+            t.__init__(b, encoding="utf-8", newline=42)
+        with self.assertRaises(ValueError):
+            t.__init__(b, encoding="utf-8", newline='\udcfe')
+        with self.assertRaises(ValueError):
+            t.__init__(b, encoding="utf-8", newline='\n\0')
+        with self.assertRaises(ValueError):
+            t.__init__(b, encoding="utf-8", newline='xyzzy')
 
     def test_uninitialized(self):
         t = self.TextIOWrapper.__new__(self.TextIOWrapper)
@@ -2783,11 +2799,9 @@ def test_recursive_repr(self):
         # Issue #25455
         raw = self.BytesIO()
         t = self.TextIOWrapper(raw, encoding="utf-8")
-        with support.swap_attr(raw, 'name', t):
-            try:
+        with support.swap_attr(raw, 'name', t), support.infinite_recursion(25):
+            with self.assertRaises(RuntimeError):
                 repr(t)  # Should not crash
-            except RuntimeError:
-                pass
 
     def test_line_buffering(self):
         r = self.BytesIO()
@@ -3022,10 +3036,7 @@ def test_error_through_destructor(self):
             with self.assertRaises(AttributeError):
                 self.TextIOWrapper(rawio, encoding="utf-8").xyzzy
 
-            if not IOBASE_EMITS_UNRAISABLE:
-                self.assertIsNone(cm.unraisable)
-            elif cm.unraisable is not None:
-                self.assertEqual(cm.unraisable.exc_type, OSError)
+            self.assertEqual(cm.unraisable.exc_type, OSError)
 
     # Systematic tests of the text I/O API
 
@@ -3766,6 +3777,59 @@ def test_reconfigure_defaults(self):
 
         self.assertEqual(txt.detach().getvalue(), b'LF\nCRLF\r\n')
 
+    def test_reconfigure_errors(self):
+        txt = self.TextIOWrapper(self.BytesIO(), 'ascii', 'replace', '\r')
+        with self.assertRaises(TypeError):  # there was a crash
+            txt.reconfigure(encoding=42)
+        if self.is_C:
+            with self.assertRaises(UnicodeEncodeError):
+                txt.reconfigure(encoding='\udcfe')
+            with self.assertRaises(LookupError):
+                txt.reconfigure(encoding='locale\0')
+        # TODO: txt.reconfigure(encoding='utf-8\0')
+        # TODO: txt.reconfigure(encoding='nonexisting')
+        with self.assertRaises(TypeError):
+            txt.reconfigure(errors=42)
+        if self.is_C:
+            with self.assertRaises(UnicodeEncodeError):
+                txt.reconfigure(errors='\udcfe')
+        # TODO: txt.reconfigure(errors='ignore\0')
+        # TODO: txt.reconfigure(errors='nonexisting')
+        with self.assertRaises(TypeError):
+            txt.reconfigure(newline=42)
+        with self.assertRaises(ValueError):
+            txt.reconfigure(newline='\udcfe')
+        with self.assertRaises(ValueError):
+            txt.reconfigure(newline='xyz')
+        if not self.is_C:
+            # TODO: Should fail in C too.
+            with self.assertRaises(ValueError):
+                txt.reconfigure(newline='\n\0')
+        if self.is_C:
+            # TODO: Use __bool__(), not __index__().
+            with self.assertRaises(ZeroDivisionError):
+                txt.reconfigure(line_buffering=BadIndex())
+            with self.assertRaises(OverflowError):
+                txt.reconfigure(line_buffering=2**1000)
+            with self.assertRaises(ZeroDivisionError):
+                txt.reconfigure(write_through=BadIndex())
+            with self.assertRaises(OverflowError):
+                txt.reconfigure(write_through=2**1000)
+            with self.assertRaises(ZeroDivisionError):  # there was a crash
+                txt.reconfigure(line_buffering=BadIndex(),
+                                write_through=BadIndex())
+        self.assertEqual(txt.encoding, 'ascii')
+        self.assertEqual(txt.errors, 'replace')
+        self.assertIs(txt.line_buffering, False)
+        self.assertIs(txt.write_through, False)
+
+        txt.reconfigure(encoding='latin1', errors='ignore', newline='\r\n',
+                        line_buffering=True, write_through=True)
+        self.assertEqual(txt.encoding, 'latin1')
+        self.assertEqual(txt.errors, 'ignore')
+        self.assertIs(txt.line_buffering, True)
+        self.assertIs(txt.write_through, True)
+
     def test_reconfigure_newline(self):
         raw = self.BytesIO(b'CR\rEOF')
         txt = self.TextIOWrapper(raw, 'ascii', newline='\n')
@@ -4052,19 +4116,18 @@ class PyIncrementalNewlineDecoderTest(IncrementalNewlineDecoderTest):
 
 class MiscIOTest(unittest.TestCase):
 
+    # for test__all__, actual values are set in subclasses
+    name_of_module = None
+    extra_exported = ()
+    not_exported = ()
+
     def tearDown(self):
         os_helper.unlink(os_helper.TESTFN)
 
     def test___all__(self):
-        for name in self.io.__all__:
-            obj = getattr(self.io, name, None)
-            self.assertIsNotNone(obj, name)
-            if name in ("open", "open_code"):
-                continue
-            elif "error" in name.lower() or name == "UnsupportedOperation":
-                self.assertTrue(issubclass(obj, Exception), name)
-            elif not name.startswith("SEEK_"):
-                self.assertTrue(issubclass(obj, self.IOBase))
+        support.check__all__(self, self.io, self.name_of_module,
+                             extra=self.extra_exported,
+                             not_exported=self.not_exported)
 
     def test_attributes(self):
         f = self.open(os_helper.TESTFN, "wb", buffering=0)
@@ -4406,11 +4469,11 @@ def test_check_encoding_warning(self):
         ''')
         proc = assert_python_ok('-X', 'warn_default_encoding', '-c', code)
         warnings = proc.err.splitlines()
-        self.assertEqual(len(warnings), 2)
+        self.assertEqual(len(warnings), 4)
         self.assertTrue(
             warnings[0].startswith(b"<string>:5: EncodingWarning: "))
         self.assertTrue(
-            warnings[1].startswith(b"<string>:8: EncodingWarning: "))
+            warnings[2].startswith(b"<string>:8: EncodingWarning: "))
 
     def test_text_encoding(self):
         # PEP 597, bpo-47000. io.text_encoding() returns "locale" or "utf-8"
@@ -4426,6 +4489,8 @@ def test_text_encoding(self):
 
 class CMiscIOTest(MiscIOTest):
     io = io
+    name_of_module = "io", "_io"
+    extra_exported = "BlockingIOError",
 
     def test_readinto_buffer_overflow(self):
         # Issue #18025
@@ -4478,16 +4543,21 @@ def run():
             self.assertFalse(err.strip('.!'))
 
     @threading_helper.requires_working_threading()
+    @support.requires_resource('walltime')
     def test_daemon_threads_shutdown_stdout_deadlock(self):
         self.check_daemon_threads_shutdown_deadlock('stdout')
 
     @threading_helper.requires_working_threading()
+    @support.requires_resource('walltime')
     def test_daemon_threads_shutdown_stderr_deadlock(self):
         self.check_daemon_threads_shutdown_deadlock('stderr')
 
 
 class PyMiscIOTest(MiscIOTest):
     io = pyio
+    name_of_module = "_pyio", "io"
+    extra_exported = "BlockingIOError", "open_code",
+    not_exported = "valid_seek_flags",
 
 
 @unittest.skipIf(os.name == 'nt', 'POSIX signals required for this test.')
@@ -4655,11 +4725,13 @@ def alarm_handler(sig, frame):
             os.close(r)
 
     @requires_alarm
+    @support.requires_resource('walltime')
     def test_interrupted_read_retry_buffered(self):
         self.check_interrupted_read_retry(lambda x: x.decode('latin1'),
                                           mode="rb")
 
     @requires_alarm
+    @support.requires_resource('walltime')
     def test_interrupted_read_retry_text(self):
         self.check_interrupted_read_retry(lambda x: x,
                                           mode="r", encoding="latin1")
@@ -4733,10 +4805,12 @@ def alarm2(sig, frame):
                     raise
 
     @requires_alarm
+    @support.requires_resource('walltime')
     def test_interrupted_write_retry_buffered(self):
         self.check_interrupted_write_retry(b"x", mode="wb")
 
     @requires_alarm
+    @support.requires_resource('walltime')
     def test_interrupted_write_retry_text(self):
         self.check_interrupted_write_retry("x", mode="w", encoding="latin1")
 
@@ -4771,7 +4845,7 @@ def load_tests(loader, tests, pattern):
     mocks = (MockRawIO, MisbehavedRawIO, MockFileIO, CloseFailureIO,
              MockNonBlockWriterIO, MockUnseekableIO, MockRawIOWithoutRead,
              SlowFlushRawIO)
-    all_members = io.__all__ + ["IncrementalNewlineDecoder"]
+    all_members = io.__all__
     c_io_ns = {name : getattr(io, name) for name in all_members}
     py_io_ns = {name : getattr(pyio, name) for name in all_members}
     globs = globals()
@@ -4781,9 +4855,11 @@ def load_tests(loader, tests, pattern):
         if test.__name__.startswith("C"):
             for name, obj in c_io_ns.items():
                 setattr(test, name, obj)
+            test.is_C = True
         elif test.__name__.startswith("Py"):
             for name, obj in py_io_ns.items():
                 setattr(test, name, obj)
+            test.is_C = False
 
     suite = loader.suiteClass()
     for test in tests:
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
index a5388b2e5debd8..b4952acc2b61b1 100644
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -4,6 +4,7 @@
 """Unittest for ipaddress module."""
 
 
+import copy
 import unittest
 import re
 import contextlib
@@ -302,6 +303,14 @@ def test_pickle(self):
     def test_weakref(self):
         weakref.ref(self.factory('192.0.2.1'))
 
+    def test_ipv6_mapped(self):
+        self.assertEqual(ipaddress.IPv4Address('192.168.1.1').ipv6_mapped,
+                         ipaddress.IPv6Address('::ffff:192.168.1.1'))
+        self.assertEqual(ipaddress.IPv4Address('192.168.1.1').ipv6_mapped,
+                         ipaddress.IPv6Address('::ffff:c0a8:101'))
+        self.assertEqual(ipaddress.IPv4Address('192.168.1.1').ipv6_mapped.ipv4_mapped,
+                         ipaddress.IPv4Address('192.168.1.1'))
+
 
 class AddressTestCase_v6(BaseTestCase, CommonTestMixin_v6):
     factory = ipaddress.IPv6Address
@@ -542,11 +551,17 @@ def assertBadPart(addr, part):
 
     def test_pickle(self):
         self.pickle_test('2001:db8::')
+        self.pickle_test('2001:db8::%scope')
 
     def test_weakref(self):
         weakref.ref(self.factory('2001:db8::'))
         weakref.ref(self.factory('2001:db8::%scope'))
 
+    def test_copy(self):
+        addr = self.factory('2001:db8::%scope')
+        self.assertEqual(addr, copy.copy(addr))
+        self.assertEqual(addr, copy.deepcopy(addr))
+
 
 class NetmaskTestMixin_v4(CommonTestMixin_v4):
     """Input validation on interfaces and networks is very similar"""
@@ -1321,6 +1336,17 @@ def testGetIp(self):
         self.assertEqual(str(self.ipv6_scoped_interface.ip),
                          '2001:658:22a:cafe:200::1')
 
+    def testIPv6IPv4MappedStringRepresentation(self):
+        long_prefix = '0000:0000:0000:0000:0000:ffff:'
+        short_prefix = '::ffff:'
+        ipv4 = '1.2.3.4'
+        ipv6_ipv4_str = short_prefix + ipv4
+        ipv6_ipv4_addr = ipaddress.IPv6Address(ipv6_ipv4_str)
+        ipv6_ipv4_iface = ipaddress.IPv6Interface(ipv6_ipv4_str)
+        self.assertEqual(str(ipv6_ipv4_addr), ipv6_ipv4_str)
+        self.assertEqual(ipv6_ipv4_addr.exploded, long_prefix + ipv4)
+        self.assertEqual(str(ipv6_ipv4_iface.ip), ipv6_ipv4_str)
+
     def testGetScopeId(self):
         self.assertEqual(self.ipv6_address.scope_id,
                          None)
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index 9fe559d4b7eed5..705e880d98685e 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -15,6 +15,26 @@
 import struct
 import threading
 import gc
+import warnings
+
+def pickle_deprecated(testfunc):
+    """ Run the test three times.
+    First, verify that a Deprecation Warning is raised.
+    Second, run normally but with DeprecationWarnings temporarily disabled.
+    Third, run with warnings promoted to errors.
+    """
+    def inner(self):
+        with self.assertWarns(DeprecationWarning):
+            testfunc(self)
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", category=DeprecationWarning)
+            testfunc(self)
+        with warnings.catch_warnings():
+            warnings.simplefilter("error", category=DeprecationWarning)
+            with self.assertRaises((DeprecationWarning, AssertionError, SystemError)):
+                testfunc(self)
+
+    return inner
 
 maxsize = support.MAX_Py_ssize_t
 minsize = -maxsize-1
@@ -124,6 +144,7 @@ def expand(it, i=0):
             c = expand(compare[took:])
             self.assertEqual(a, c);
 
+    @pickle_deprecated
     def test_accumulate(self):
         self.assertEqual(list(accumulate(range(10))),               # one positional arg
                           [0, 1, 3, 6, 10, 15, 21, 28, 36, 45])
@@ -220,6 +241,7 @@ def test_chain_from_iterable(self):
         self.assertRaises(TypeError, list, chain.from_iterable([2, 3]))
         self.assertEqual(list(islice(chain.from_iterable(repeat(range(5))), 2)), [0, 1])
 
+    @pickle_deprecated
     def test_chain_reducible(self):
         for oper in [copy.deepcopy] + picklecopiers:
             it = chain('abc', 'def')
@@ -233,6 +255,7 @@ def test_chain_reducible(self):
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             self.pickletest(proto, chain('abc', 'def'), compare=list('abcdef'))
 
+    @pickle_deprecated
     def test_chain_setstate(self):
         self.assertRaises(TypeError, chain().__setstate__, ())
         self.assertRaises(TypeError, chain().__setstate__, [])
@@ -246,6 +269,7 @@ def test_chain_setstate(self):
         it.__setstate__((iter(['abc', 'def']), iter(['ghi'])))
         self.assertEqual(list(it), ['ghi', 'a', 'b', 'c', 'd', 'e', 'f'])
 
+    @pickle_deprecated
     def test_combinations(self):
         self.assertRaises(TypeError, combinations, 'abc')       # missing r argument
         self.assertRaises(TypeError, combinations, 'abc', 2, 1) # too many arguments
@@ -269,7 +293,6 @@ def test_combinations(self):
             self.assertEqual(list(op(testIntermediate)),
                              [(0,1,3), (0,2,3), (1,2,3)])
 
-
         def combinations1(iterable, r):
             'Pure python version shown in the docs'
             pool = tuple(iterable)
@@ -337,6 +360,7 @@ def test_combinations_tuple_reuse(self):
         self.assertEqual(len(set(map(id, combinations('abcde', 3)))), 1)
         self.assertNotEqual(len(set(map(id, list(combinations('abcde', 3))))), 1)
 
+    @pickle_deprecated
     def test_combinations_with_replacement(self):
         cwr = combinations_with_replacement
         self.assertRaises(TypeError, cwr, 'abc')       # missing r argument
@@ -425,6 +449,7 @@ def test_combinations_with_replacement_tuple_reuse(self):
         self.assertEqual(len(set(map(id, cwr('abcde', 3)))), 1)
         self.assertNotEqual(len(set(map(id, list(cwr('abcde', 3))))), 1)
 
+    @pickle_deprecated
     def test_permutations(self):
         self.assertRaises(TypeError, permutations)              # too few arguments
         self.assertRaises(TypeError, permutations, 'abc', 2, 1) # too many arguments
@@ -531,6 +556,7 @@ def test_combinatorics(self):
                 self.assertEqual(comb, list(filter(set(perm).__contains__, cwr)))     # comb: cwr that is a perm
                 self.assertEqual(comb, sorted(set(cwr) & set(perm)))            # comb: both a cwr and a perm
 
+    @pickle_deprecated
     def test_compress(self):
         self.assertEqual(list(compress(data='ABCDEF', selectors=[1,0,1,0,1,1])), list('ACEF'))
         self.assertEqual(list(compress('ABCDEF', [1,0,1,0,1,1])), list('ACEF'))
@@ -564,7 +590,7 @@ def test_compress(self):
                     next(testIntermediate)
                     self.assertEqual(list(op(testIntermediate)), list(result2))
 
-
+    @pickle_deprecated
     def test_count(self):
         self.assertEqual(lzip('abc',count()), [('a', 0), ('b', 1), ('c', 2)])
         self.assertEqual(lzip('abc',count(3)), [('a', 3), ('b', 4), ('c', 5)])
@@ -613,6 +639,7 @@ def test_count(self):
         #check proper internal error handling for large "step' sizes
         count(1, maxsize+5); sys.exc_info()
 
+    @pickle_deprecated
     def test_count_with_stride(self):
         self.assertEqual(lzip('abc',count(2,3)), [('a', 2), ('b', 5), ('c', 8)])
         self.assertEqual(lzip('abc',count(start=2,step=3)),
@@ -675,6 +702,7 @@ def test_cycle(self):
         self.assertRaises(TypeError, cycle, 5)
         self.assertEqual(list(islice(cycle(gen3()),10)), [0,1,2,0,1,2,0,1,2,0])
 
+    @pickle_deprecated
     def test_cycle_copy_pickle(self):
         # check copy, deepcopy, pickle
         c = cycle('abc')
@@ -711,6 +739,7 @@ def test_cycle_copy_pickle(self):
             d = pickle.loads(p)                  # rebuild the cycle object
             self.assertEqual(take(20, d), list('cdeabcdeabcdeabcdeab'))
 
+    @pickle_deprecated
     def test_cycle_unpickle_compat(self):
         testcases = [
             b'citertools\ncycle\n(c__builtin__\niter\n((lI1\naI2\naI3\natRI1\nbtR((lI1\naI0\ntb.',
@@ -742,6 +771,7 @@ def test_cycle_unpickle_compat(self):
             it = pickle.loads(t)
             self.assertEqual(take(10, it), [2, 3, 1, 2, 3, 1, 2, 3, 1, 2])
 
+    @pickle_deprecated
     def test_cycle_setstate(self):
         # Verify both modes for restoring state
 
@@ -778,6 +808,7 @@ def test_cycle_setstate(self):
         self.assertRaises(TypeError, cycle('').__setstate__, ())
         self.assertRaises(TypeError, cycle('').__setstate__, ([],))
 
+    @pickle_deprecated
     def test_groupby(self):
         # Check whether it accepts arguments correctly
         self.assertEqual([], list(groupby([])))
@@ -935,6 +966,7 @@ def test_filter(self):
             c = filter(isEven, range(6))
             self.pickletest(proto, c)
 
+    @pickle_deprecated
     def test_filterfalse(self):
         self.assertEqual(list(filterfalse(isEven, range(6))), [1,3,5])
         self.assertEqual(list(filterfalse(None, [0,1,0,2,0])), [0,0,0])
@@ -965,6 +997,7 @@ def test_zip(self):
                          lzip('abc', 'def'))
 
     @support.impl_detail("tuple reuse is specific to CPython")
+    @pickle_deprecated
     def test_zip_tuple_reuse(self):
         ids = list(map(id, zip('abc', 'def')))
         self.assertEqual(min(ids), max(ids))
@@ -1040,6 +1073,7 @@ def test_zip_longest_tuple_reuse(self):
         ids = list(map(id, list(zip_longest('abc', 'def'))))
         self.assertEqual(len(dict.fromkeys(ids)), len(ids))
 
+    @pickle_deprecated
     def test_zip_longest_pickling(self):
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             self.pickletest(proto, zip_longest("abc", "def"))
@@ -1118,6 +1152,78 @@ def test_pairwise(self):
         with self.assertRaises(TypeError):
             pairwise(None)                                  # non-iterable argument
 
+    def test_pairwise_reenter(self):
+        def check(reenter_at, expected):
+            class I:
+                count = 0
+                def __iter__(self):
+                    return self
+                def __next__(self):
+                    self.count +=1
+                    if self.count in reenter_at:
+                        return next(it)
+                    return [self.count]  # new object
+
+            it = pairwise(I())
+            for item in expected:
+                self.assertEqual(next(it), item)
+
+        check({1}, [
+            (([2], [3]), [4]),
+            ([4], [5]),
+        ])
+        check({2}, [
+            ([1], ([1], [3])),
+            (([1], [3]), [4]),
+            ([4], [5]),
+        ])
+        check({3}, [
+            ([1], [2]),
+            ([2], ([2], [4])),
+            (([2], [4]), [5]),
+            ([5], [6]),
+        ])
+        check({1, 2}, [
+            ((([3], [4]), [5]), [6]),
+            ([6], [7]),
+        ])
+        check({1, 3}, [
+            (([2], ([2], [4])), [5]),
+            ([5], [6]),
+        ])
+        check({1, 4}, [
+            (([2], [3]), (([2], [3]), [5])),
+            ((([2], [3]), [5]), [6]),
+            ([6], [7]),
+        ])
+        check({2, 3}, [
+            ([1], ([1], ([1], [4]))),
+            (([1], ([1], [4])), [5]),
+            ([5], [6]),
+        ])
+
+    def test_pairwise_reenter2(self):
+        def check(maxcount, expected):
+            class I:
+                count = 0
+                def __iter__(self):
+                    return self
+                def __next__(self):
+                    if self.count >= maxcount:
+                        raise StopIteration
+                    self.count +=1
+                    if self.count == 1:
+                        return next(it, None)
+                    return [self.count]  # new object
+
+            it = pairwise(I())
+            self.assertEqual(list(it), expected)
+
+        check(1, [])
+        check(2, [])
+        check(3, [])
+        check(4, [(([2], [3]), [4])])
+
     def test_product(self):
         for args, result in [
             ([], [()]),                     # zero iterables
@@ -1186,6 +1292,7 @@ def test_product_tuple_reuse(self):
         self.assertEqual(len(set(map(id, product('abc', 'def')))), 1)
         self.assertNotEqual(len(set(map(id, list(product('abc', 'def'))))), 1)
 
+    @pickle_deprecated
     def test_product_pickling(self):
         # check copy, deepcopy, pickle
         for args, result in [
@@ -1201,6 +1308,7 @@ def test_product_pickling(self):
             for proto in range(pickle.HIGHEST_PROTOCOL + 1):
                 self.pickletest(proto, product(*args))
 
+    @pickle_deprecated
     def test_product_issue_25021(self):
         # test that indices are properly clamped to the length of the tuples
         p = product((1, 2),(3,))
@@ -1211,6 +1319,7 @@ def test_product_issue_25021(self):
         p.__setstate__((0, 0, 0x1000))  # will access tuple element 1 if not clamped
         self.assertRaises(StopIteration, next, p)
 
+    @pickle_deprecated
     def test_repeat(self):
         self.assertEqual(list(repeat(object='a', times=3)), ['a', 'a', 'a'])
         self.assertEqual(lzip(range(3),repeat('a')),
@@ -1243,6 +1352,7 @@ def test_repeat_with_negative_times(self):
         self.assertEqual(repr(repeat('a', times=-1)), "repeat('a', 0)")
         self.assertEqual(repr(repeat('a', times=-2)), "repeat('a', 0)")
 
+    @pickle_deprecated
     def test_map(self):
         self.assertEqual(list(map(operator.pow, range(3), range(1,7))),
                          [0**1, 1**2, 2**3])
@@ -1273,6 +1383,7 @@ def test_map(self):
             c = map(tupleize, 'abc', count())
             self.pickletest(proto, c)
 
+    @pickle_deprecated
     def test_starmap(self):
         self.assertEqual(list(starmap(operator.pow, zip(range(3), range(1,7)))),
                          [0**1, 1**2, 2**3])
@@ -1300,6 +1411,7 @@ def test_starmap(self):
             c = starmap(operator.pow, zip(range(3), range(1,7)))
             self.pickletest(proto, c)
 
+    @pickle_deprecated
     def test_islice(self):
         for args in [          # islice(args) should agree with range(args)
                 (10, 20, 3),
@@ -1394,6 +1506,7 @@ def __index__(self):
         self.assertEqual(list(islice(range(100), IntLike(10), IntLike(50), IntLike(5))),
                          list(range(10,50,5)))
 
+    @pickle_deprecated
     def test_takewhile(self):
         data = [1, 3, 5, 20, 2, 4, 6, 8]
         self.assertEqual(list(takewhile(underten, data)), [1, 3, 5])
@@ -1414,6 +1527,7 @@ def test_takewhile(self):
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             self.pickletest(proto, takewhile(underten, data))
 
+    @pickle_deprecated
     def test_dropwhile(self):
         data = [1, 3, 5, 20, 2, 4, 6, 8]
         self.assertEqual(list(dropwhile(underten, data)), [20, 2, 4, 6, 8])
@@ -1431,6 +1545,7 @@ def test_dropwhile(self):
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             self.pickletest(proto, dropwhile(underten, data))
 
+    @pickle_deprecated
     def test_tee(self):
         n = 200
 
@@ -1732,6 +1847,7 @@ class TestExamples(unittest.TestCase):
     def test_accumulate(self):
         self.assertEqual(list(accumulate([1,2,3,4,5])), [1, 3, 6, 10, 15])
 
+    @pickle_deprecated
     def test_accumulate_reducible(self):
         # check copy, deepcopy, pickle
         data = [1, 2, 3, 4, 5]
@@ -1747,6 +1863,7 @@ def test_accumulate_reducible(self):
         self.assertEqual(list(copy.deepcopy(it)), accumulated[1:])
         self.assertEqual(list(copy.copy(it)), accumulated[1:])
 
+    @pickle_deprecated
     def test_accumulate_reducible_none(self):
         # Issue #25718: total is None
         it = accumulate([None, None, None], operator.is_)
@@ -2356,6 +2473,7 @@ def gen2(x):
         self.assertEqual(hist, [0,1])
 
     @support.skip_if_pgo_task
+    @support.requires_resource('cpu')
     def test_long_chain_of_empty_iterables(self):
         # Make sure itertools.chain doesn't run into recursion limits when
         # dealing with long chains of empty iterables. Even with a high
diff --git a/Lib/test/test_json/__init__.py b/Lib/test/test_json/__init__.py
index 37b2e0d5e26d16..74b64ed86a3183 100644
--- a/Lib/test/test_json/__init__.py
+++ b/Lib/test/test_json/__init__.py
@@ -18,7 +18,6 @@ class PyTest(unittest.TestCase):
     json = pyjson
     loads = staticmethod(pyjson.loads)
     dumps = staticmethod(pyjson.dumps)
-    AttrDict = pyjson.AttrDict
     JSONDecodeError = staticmethod(pyjson.JSONDecodeError)
 
 @unittest.skipUnless(cjson, 'requires _json')
diff --git a/Lib/test/test_json/test_attrdict.py b/Lib/test/test_json/test_attrdict.py
deleted file mode 100644
index 143ea462d310aa..00000000000000
--- a/Lib/test/test_json/test_attrdict.py
+++ /dev/null
@@ -1,145 +0,0 @@
-from test.test_json import PyTest
-import pickle
-import sys
-import unittest
-
-kepler_dict = {
-    "orbital_period": {
-        "mercury": 88,
-        "venus": 225,
-        "earth": 365,
-        "mars": 687,
-        "jupiter": 4331,
-        "saturn": 10_756,
-        "uranus": 30_687,
-        "neptune": 60_190,
-    },
-    "dist_from_sun": {
-        "mercury": 58,
-        "venus": 108,
-        "earth": 150,
-        "mars": 228,
-        "jupiter": 778,
-        "saturn": 1_400,
-        "uranus": 2_900,
-        "neptune": 4_500,
-    }
-}
-
-class TestAttrDict(PyTest):
-
-    def test_dict_subclass(self):
-        self.assertTrue(issubclass(self.AttrDict, dict))
-
-    def test_slots(self):
-        d = self.AttrDict(x=1, y=2)
-        with self.assertRaises(TypeError):
-            vars(d)
-
-    def test_constructor_signatures(self):
-        AttrDict = self.AttrDict
-        target = dict(x=1, y=2)
-        self.assertEqual(AttrDict(x=1, y=2), target)                   # kwargs
-        self.assertEqual(AttrDict(dict(x=1, y=2)), target)             # mapping
-        self.assertEqual(AttrDict(dict(x=1, y=0), y=2), target)        # mapping, kwargs
-        self.assertEqual(AttrDict([('x', 1), ('y', 2)]), target)       # iterable
-        self.assertEqual(AttrDict([('x', 1), ('y', 0)], y=2), target)  # iterable, kwargs
-
-    def test_getattr(self):
-        d = self.AttrDict(x=1, y=2)
-        self.assertEqual(d.x, 1)
-        with self.assertRaises(AttributeError):
-            d.z
-
-    def test_setattr(self):
-        d = self.AttrDict(x=1, y=2)
-        d.x = 3
-        d.z = 5
-        self.assertEqual(d, dict(x=3, y=2, z=5))
-
-    def test_delattr(self):
-        d = self.AttrDict(x=1, y=2)
-        del d.x
-        self.assertEqual(d, dict(y=2))
-        with self.assertRaises(AttributeError):
-            del d.z
-
-    def test_dir(self):
-        d = self.AttrDict(x=1, y=2)
-        self.assertTrue(set(dir(d)), set(dir(dict)).union({'x', 'y'}))
-
-    def test_repr(self):
-        # This repr is doesn't round-trip.  It matches a regular dict.
-        # That seems to be the norm for AttrDict recipes being used
-        # in the wild.  Also it supports the design concept that an
-        # AttrDict is just like a regular dict but has optional
-        # attribute style lookup.
-        self.assertEqual(repr(self.AttrDict(x=1, y=2)),
-                         repr(dict(x=1, y=2)))
-
-    def test_overlapping_keys_and_methods(self):
-        d = self.AttrDict(items=50)
-        self.assertEqual(d['items'], 50)
-        self.assertEqual(d.items(), dict(d).items())
-
-    def test_invalid_attribute_names(self):
-        d = self.AttrDict({
-            'control': 'normal case',
-            'class': 'keyword',
-            'two words': 'contains space',
-            'hypen-ate': 'contains a hyphen'
-        })
-        self.assertEqual(d.control, dict(d)['control'])
-        self.assertEqual(d['class'], dict(d)['class'])
-        self.assertEqual(d['two words'], dict(d)['two words'])
-        self.assertEqual(d['hypen-ate'], dict(d)['hypen-ate'])
-
-    def test_object_hook_use_case(self):
-        AttrDict = self.AttrDict
-        json_string = self.dumps(kepler_dict)
-        kepler_ad = self.loads(json_string, object_hook=AttrDict)
-
-        self.assertEqual(kepler_ad, kepler_dict)     # Match regular dict
-        self.assertIsInstance(kepler_ad, AttrDict)   # Verify conversion
-        self.assertIsInstance(kepler_ad.orbital_period, AttrDict)  # Nested
-
-        # Exercise dotted lookups
-        self.assertEqual(kepler_ad.orbital_period, kepler_dict['orbital_period'])
-        self.assertEqual(kepler_ad.orbital_period.earth,
-                         kepler_dict['orbital_period']['earth'])
-        self.assertEqual(kepler_ad['orbital_period'].earth,
-                         kepler_dict['orbital_period']['earth'])
-
-        # Dict style error handling and Attribute style error handling
-        with self.assertRaises(KeyError):
-            kepler_ad.orbital_period['pluto']
-        with self.assertRaises(AttributeError):
-            kepler_ad.orbital_period.Pluto
-
-        # Order preservation
-        self.assertEqual(list(kepler_ad.items()), list(kepler_dict.items()))
-        self.assertEqual(list(kepler_ad.orbital_period.items()),
-                             list(kepler_dict['orbital_period'].items()))
-
-        # Round trip
-        self.assertEqual(self.dumps(kepler_ad), json_string)
-
-    def test_pickle(self):
-        AttrDict = self.AttrDict
-        json_string = self.dumps(kepler_dict)
-        kepler_ad = self.loads(json_string, object_hook=AttrDict)
-
-        # Pickling requires the cached module to be the real module
-        cached_module = sys.modules.get('json')
-        sys.modules['json'] = self.json
-        try:
-            for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
-                kepler_ad2 = pickle.loads(pickle.dumps(kepler_ad, protocol))
-                self.assertEqual(kepler_ad2, kepler_ad)
-                self.assertEqual(type(kepler_ad2), AttrDict)
-        finally:
-            sys.modules['json'] = cached_module
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_keyword.py b/Lib/test/test_keyword.py
index f329f88fa01d51..858e5de3b92e6a 100644
--- a/Lib/test/test_keyword.py
+++ b/Lib/test/test_keyword.py
@@ -39,7 +39,8 @@ def test_async_and_await_are_keywords(self):
         self.assertIn("async", keyword.kwlist)
         self.assertIn("await", keyword.kwlist)
 
-    def test_match_and_case_are_soft_keywords(self):
+    def test_soft_keywords(self):
+        self.assertIn("type", keyword.softkwlist)
         self.assertIn("match", keyword.softkwlist)
         self.assertIn("case", keyword.softkwlist)
         self.assertIn("_", keyword.softkwlist)
diff --git a/Lib/test/test_keywordonlyarg.py b/Lib/test/test_keywordonlyarg.py
index df82f677a00a48..918f953cae5702 100644
--- a/Lib/test/test_keywordonlyarg.py
+++ b/Lib/test/test_keywordonlyarg.py
@@ -170,7 +170,7 @@ def f(v=a, x=b, *, y=c, z=d):
                 pass
         self.assertEqual(str(err.exception), "name 'b' is not defined")
         with self.assertRaises(NameError) as err:
-            f = lambda v=a, x=b, *, y=c, z=d: None
+            g = lambda v=a, x=b, *, y=c, z=d: None
         self.assertEqual(str(err.exception), "name 'b' is not defined")
 
 
diff --git a/Lib/test/test_kqueue.py b/Lib/test/test_kqueue.py
index 998fd9d46496bb..e94edcbc107ba9 100644
--- a/Lib/test/test_kqueue.py
+++ b/Lib/test/test_kqueue.py
@@ -5,6 +5,7 @@
 import os
 import select
 import socket
+from test import support
 import time
 import unittest
 
@@ -256,6 +257,23 @@ def test_fd_non_inheritable(self):
         self.addCleanup(kqueue.close)
         self.assertEqual(os.get_inheritable(kqueue.fileno()), False)
 
+    @support.requires_fork()
+    def test_fork(self):
+        # gh-110395: kqueue objects must be closed after fork
+        kqueue = select.kqueue()
+        if (pid := os.fork()) == 0:
+            try:
+                self.assertTrue(kqueue.closed)
+                with self.assertRaisesRegex(ValueError, "closed kqueue"):
+                    kqueue.fileno()
+            except:
+                os._exit(1)
+            finally:
+                os._exit(0)
+        else:
+            support.wait_process(pid, exitcode=0)
+            self.assertFalse(kqueue.closed)  # child done, we're still open.
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_largefile.py b/Lib/test/test_largefile.py
index 3c11c59baef6e5..3b0930fe69e30e 100644
--- a/Lib/test/test_largefile.py
+++ b/Lib/test/test_largefile.py
@@ -8,7 +8,7 @@
 import socket
 import shutil
 import threading
-from test.support import requires, bigmemtest
+from test.support import requires, bigmemtest, requires_resource
 from test.support import SHORT_TIMEOUT
 from test.support import socket_helper
 from test.support.os_helper import TESTFN, unlink
@@ -173,6 +173,7 @@ class TestCopyfile(LargeFileTest, unittest.TestCase):
     # Exact required disk space would be (size * 2), but let's give it a
     # bit more tolerance.
     @skip_no_disk_space(TESTFN, size * 2.5)
+    @requires_resource('cpu')
     def test_it(self):
         # Internally shutil.copyfile() can use "fast copy" methods like
         # os.sendfile().
@@ -222,6 +223,7 @@ def run(sock):
     # Exact required disk space would be (size * 2), but let's give it a
     # bit more tolerance.
     @skip_no_disk_space(TESTFN, size * 2.5)
+    @requires_resource('cpu')
     def test_it(self):
         port = socket_helper.find_unused_port()
         with socket.create_server(("", port)) as sock:
diff --git a/Lib/test/test_launcher.py b/Lib/test/test_launcher.py
index 362b507d158288..bcd4ed63bf25a0 100644
--- a/Lib/test/test_launcher.py
+++ b/Lib/test/test_launcher.py
@@ -717,3 +717,25 @@ def test_literal_shebang_invalid_template(self):
             f"{expect} arg1 {script}",
             data["stdout"].strip(),
         )
+
+    def test_shebang_command_in_venv(self):
+        stem = "python-that-is-not-on-path"
+
+        # First ensure that our test name doesn't exist, and the launcher does
+        # not match any installed env
+        with self.script(f'#! /usr/bin/env {stem} arg1') as script:
+            data = self.run_py([script], expect_returncode=103)
+
+        with self.fake_venv() as (venv_exe, env):
+            # Put a real Python (ourselves) on PATH as a distraction.
+            # The active VIRTUAL_ENV should be preferred when the name isn't an
+            # exact match.
+            env["PATH"] = f"{Path(sys.executable).parent};{os.environ['PATH']}"
+
+            with self.script(f'#! /usr/bin/env {stem} arg1') as script:
+                data = self.run_py([script], env=env)
+            self.assertEqual(data["stdout"].strip(), f"{venv_exe} arg1 {script}")
+
+            with self.script(f'#! /usr/bin/env {Path(sys.executable).stem} arg1') as script:
+                data = self.run_py([script], env=env)
+            self.assertEqual(data["stdout"].strip(), f"{sys.executable} arg1 {script}")
diff --git a/Lib/test/test_lib2to3/__init__.py b/Lib/test/test_lib2to3/__init__.py
deleted file mode 100644
index f323c2355b2287..00000000000000
--- a/Lib/test/test_lib2to3/__init__.py
+++ /dev/null
@@ -1,11 +0,0 @@
-# Author: Collin Winter
-
-import os
-import warnings
-
-from test.support import load_package_tests
-
-def load_tests(*args):
-    with warnings.catch_warnings():
-        warnings.filterwarnings('ignore', category=DeprecationWarning, message='lib2to3')
-        return load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_lib2to3/__main__.py b/Lib/test/test_lib2to3/__main__.py
deleted file mode 100644
index 40a23a297ec2b4..00000000000000
--- a/Lib/test/test_lib2to3/__main__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-from . import load_tests
-import unittest
-
-unittest.main()
diff --git a/Lib/test/test_lib2to3/data/README b/Lib/test/test_lib2to3/data/README
deleted file mode 100644
index 7aa47e40aa97f5..00000000000000
--- a/Lib/test/test_lib2to3/data/README
+++ /dev/null
@@ -1,6 +0,0 @@
-In this directory:
-- py2_test_grammar.py -- test file that exercises most/all of Python 2.x's grammar.
-- py3_test_grammar.py -- test file that exercises most/all of Python 3.x's grammar.
-- infinite_recursion.py -- test file that causes lib2to3's faster recursive pattern matching
-  scheme to fail, but passes when lib2to3 falls back to iterative pattern matching.
-- fixes/ -- for use by test_refactor.py
diff --git a/Lib/test/test_lib2to3/data/bom.py b/Lib/test/test_lib2to3/data/bom.py
deleted file mode 100644
index 9bc3975a42f601..00000000000000
--- a/Lib/test/test_lib2to3/data/bom.py
+++ /dev/null
@@ -1,2 +0,0 @@
-# coding: utf-8
-print "BOM BOOM!"
diff --git a/Lib/test/test_lib2to3/data/crlf.py b/Lib/test/test_lib2to3/data/crlf.py
deleted file mode 100644
index a83ca8f0a2068f..00000000000000
--- a/Lib/test/test_lib2to3/data/crlf.py
+++ /dev/null
@@ -1,3 +0,0 @@
-print "hi"
-
-print "Like bad Windows newlines?"
diff --git a/Lib/test/test_lib2to3/data/different_encoding.py b/Lib/test/test_lib2to3/data/different_encoding.py
deleted file mode 100755
index 9f32bd04dc28db..00000000000000
--- a/Lib/test/test_lib2to3/data/different_encoding.py
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-print u'ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿÀ�ÂÃÄÅÆÇÈÉÊËÌ�Î��ÑÒÓÔÕÖØÙÚÛÜ�Þ'
-
-def f(x):
-    print '%s\t->  α(%2i):%s  β(%s)'
diff --git a/Lib/test/test_lib2to3/data/false_encoding.py b/Lib/test/test_lib2to3/data/false_encoding.py
deleted file mode 100755
index f4e59e787da1e5..00000000000000
--- a/Lib/test/test_lib2to3/data/false_encoding.py
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/usr/bin/env python
-print '#coding=0'
diff --git a/Lib/test/test_lib2to3/data/fixers/bad_order.py b/Lib/test/test_lib2to3/data/fixers/bad_order.py
deleted file mode 100644
index 061bbf209a0dee..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/bad_order.py
+++ /dev/null
@@ -1,5 +0,0 @@
-from lib2to3.fixer_base import BaseFix
-
-class FixBadOrder(BaseFix):
-
-    order = "crazy"
diff --git a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_explicit.py b/Lib/test/test_lib2to3/data/fixers/myfixes/fix_explicit.py
deleted file mode 100644
index cbe16f6f1f0dfc..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_explicit.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from lib2to3.fixer_base import BaseFix
-
-class FixExplicit(BaseFix):
-    explicit = True
-
-    def match(self): return False
diff --git a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_first.py b/Lib/test/test_lib2to3/data/fixers/myfixes/fix_first.py
deleted file mode 100644
index a88821f06b2d14..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_first.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from lib2to3.fixer_base import BaseFix
-
-class FixFirst(BaseFix):
-    run_order = 1
-
-    def match(self, node): return False
diff --git a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_last.py b/Lib/test/test_lib2to3/data/fixers/myfixes/fix_last.py
deleted file mode 100644
index 9a077d41594da6..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_last.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from lib2to3.fixer_base import BaseFix
-
-class FixLast(BaseFix):
-
-    run_order = 10
-
-    def match(self, node): return False
diff --git a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_parrot.py b/Lib/test/test_lib2to3/data/fixers/myfixes/fix_parrot.py
deleted file mode 100644
index 6db79adf8d80c1..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_parrot.py
+++ /dev/null
@@ -1,13 +0,0 @@
-from lib2to3.fixer_base import BaseFix
-from lib2to3.fixer_util import Name
-
-class FixParrot(BaseFix):
-    """
-    Change functions named 'parrot' to 'cheese'.
-    """
-
-    PATTERN = """funcdef < 'def' name='parrot' any* >"""
-
-    def transform(self, node, results):
-        name = results["name"]
-        name.replace(Name("cheese", name.prefix))
diff --git a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_preorder.py b/Lib/test/test_lib2to3/data/fixers/myfixes/fix_preorder.py
deleted file mode 100644
index b9bfbba9d5e900..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/myfixes/fix_preorder.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from lib2to3.fixer_base import BaseFix
-
-class FixPreorder(BaseFix):
-    order = "pre"
-
-    def match(self, node): return False
diff --git a/Lib/test/test_lib2to3/data/fixers/no_fixer_cls.py b/Lib/test/test_lib2to3/data/fixers/no_fixer_cls.py
deleted file mode 100644
index 506f7949517058..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/no_fixer_cls.py
+++ /dev/null
@@ -1 +0,0 @@
-# This is empty so trying to fetch the fixer class gives an AttributeError
diff --git a/Lib/test/test_lib2to3/data/fixers/parrot_example.py b/Lib/test/test_lib2to3/data/fixers/parrot_example.py
deleted file mode 100644
index 08529280cdb4a1..00000000000000
--- a/Lib/test/test_lib2to3/data/fixers/parrot_example.py
+++ /dev/null
@@ -1,2 +0,0 @@
-def parrot():
-    pass
diff --git a/Lib/test/test_lib2to3/data/infinite_recursion.py b/Lib/test/test_lib2to3/data/infinite_recursion.py
deleted file mode 100644
index acc62ed4f1a44c..00000000000000
--- a/Lib/test/test_lib2to3/data/infinite_recursion.py
+++ /dev/null
@@ -1,2669 +0,0 @@
-# Verify that 2to3 falls back from the recursive pattern matching scheme to a
-# slower, iterative scheme in the event of a RecursionError.
-from ctypes import *
-STRING = c_char_p
-
-
-OSUnknownByteOrder = 0
-UIT_PROMPT = 1
-P_PGID = 2
-P_PID = 1
-UIT_ERROR = 5
-UIT_INFO = 4
-UIT_NONE = 0
-P_ALL = 0
-UIT_VERIFY = 2
-OSBigEndian = 2
-UIT_BOOLEAN = 3
-OSLittleEndian = 1
-__darwin_nl_item = c_int
-__darwin_wctrans_t = c_int
-__darwin_wctype_t = c_ulong
-__int8_t = c_byte
-__uint8_t = c_ubyte
-__int16_t = c_short
-__uint16_t = c_ushort
-__int32_t = c_int
-__uint32_t = c_uint
-__int64_t = c_longlong
-__uint64_t = c_ulonglong
-__darwin_intptr_t = c_long
-__darwin_natural_t = c_uint
-__darwin_ct_rune_t = c_int
-class __mbstate_t(Union):
-    pass
-__mbstate_t._pack_ = 4
-__mbstate_t._fields_ = [
-    ('__mbstate8', c_char * 128),
-    ('_mbstateL', c_longlong),
-]
-assert sizeof(__mbstate_t) == 128, sizeof(__mbstate_t)
-assert alignment(__mbstate_t) == 4, alignment(__mbstate_t)
-__darwin_mbstate_t = __mbstate_t
-__darwin_ptrdiff_t = c_int
-__darwin_size_t = c_ulong
-__darwin_va_list = STRING
-__darwin_wchar_t = c_int
-__darwin_rune_t = __darwin_wchar_t
-__darwin_wint_t = c_int
-__darwin_clock_t = c_ulong
-__darwin_socklen_t = __uint32_t
-__darwin_ssize_t = c_long
-__darwin_time_t = c_long
-sig_atomic_t = c_int
-class sigcontext(Structure):
-    pass
-sigcontext._fields_ = [
-    ('sc_onstack', c_int),
-    ('sc_mask', c_int),
-    ('sc_eax', c_uint),
-    ('sc_ebx', c_uint),
-    ('sc_ecx', c_uint),
-    ('sc_edx', c_uint),
-    ('sc_edi', c_uint),
-    ('sc_esi', c_uint),
-    ('sc_ebp', c_uint),
-    ('sc_esp', c_uint),
-    ('sc_ss', c_uint),
-    ('sc_eflags', c_uint),
-    ('sc_eip', c_uint),
-    ('sc_cs', c_uint),
-    ('sc_ds', c_uint),
-    ('sc_es', c_uint),
-    ('sc_fs', c_uint),
-    ('sc_gs', c_uint),
-]
-assert sizeof(sigcontext) == 72, sizeof(sigcontext)
-assert alignment(sigcontext) == 4, alignment(sigcontext)
-u_int8_t = c_ubyte
-u_int16_t = c_ushort
-u_int32_t = c_uint
-u_int64_t = c_ulonglong
-int32_t = c_int
-register_t = int32_t
-user_addr_t = u_int64_t
-user_size_t = u_int64_t
-int64_t = c_longlong
-user_ssize_t = int64_t
-user_long_t = int64_t
-user_ulong_t = u_int64_t
-user_time_t = int64_t
-syscall_arg_t = u_int64_t
-
-# values for unnamed enumeration
-class aes_key_st(Structure):
-    pass
-aes_key_st._fields_ = [
-    ('rd_key', c_ulong * 60),
-    ('rounds', c_int),
-]
-assert sizeof(aes_key_st) == 244, sizeof(aes_key_st)
-assert alignment(aes_key_st) == 4, alignment(aes_key_st)
-AES_KEY = aes_key_st
-class asn1_ctx_st(Structure):
-    pass
-asn1_ctx_st._fields_ = [
-    ('p', POINTER(c_ubyte)),
-    ('eos', c_int),
-    ('error', c_int),
-    ('inf', c_int),
-    ('tag', c_int),
-    ('xclass', c_int),
-    ('slen', c_long),
-    ('max', POINTER(c_ubyte)),
-    ('q', POINTER(c_ubyte)),
-    ('pp', POINTER(POINTER(c_ubyte))),
-    ('line', c_int),
-]
-assert sizeof(asn1_ctx_st) == 44, sizeof(asn1_ctx_st)
-assert alignment(asn1_ctx_st) == 4, alignment(asn1_ctx_st)
-ASN1_CTX = asn1_ctx_st
-class asn1_object_st(Structure):
-    pass
-asn1_object_st._fields_ = [
-    ('sn', STRING),
-    ('ln', STRING),
-    ('nid', c_int),
-    ('length', c_int),
-    ('data', POINTER(c_ubyte)),
-    ('flags', c_int),
-]
-assert sizeof(asn1_object_st) == 24, sizeof(asn1_object_st)
-assert alignment(asn1_object_st) == 4, alignment(asn1_object_st)
-ASN1_OBJECT = asn1_object_st
-class asn1_string_st(Structure):
-    pass
-asn1_string_st._fields_ = [
-    ('length', c_int),
-    ('type', c_int),
-    ('data', POINTER(c_ubyte)),
-    ('flags', c_long),
-]
-assert sizeof(asn1_string_st) == 16, sizeof(asn1_string_st)
-assert alignment(asn1_string_st) == 4, alignment(asn1_string_st)
-ASN1_STRING = asn1_string_st
-class ASN1_ENCODING_st(Structure):
-    pass
-ASN1_ENCODING_st._fields_ = [
-    ('enc', POINTER(c_ubyte)),
-    ('len', c_long),
-    ('modified', c_int),
-]
-assert sizeof(ASN1_ENCODING_st) == 12, sizeof(ASN1_ENCODING_st)
-assert alignment(ASN1_ENCODING_st) == 4, alignment(ASN1_ENCODING_st)
-ASN1_ENCODING = ASN1_ENCODING_st
-class asn1_string_table_st(Structure):
-    pass
-asn1_string_table_st._fields_ = [
-    ('nid', c_int),
-    ('minsize', c_long),
-    ('maxsize', c_long),
-    ('mask', c_ulong),
-    ('flags', c_ulong),
-]
-assert sizeof(asn1_string_table_st) == 20, sizeof(asn1_string_table_st)
-assert alignment(asn1_string_table_st) == 4, alignment(asn1_string_table_st)
-ASN1_STRING_TABLE = asn1_string_table_st
-class ASN1_TEMPLATE_st(Structure):
-    pass
-ASN1_TEMPLATE_st._fields_ = [
-]
-ASN1_TEMPLATE = ASN1_TEMPLATE_st
-class ASN1_ITEM_st(Structure):
-    pass
-ASN1_ITEM = ASN1_ITEM_st
-ASN1_ITEM_st._fields_ = [
-]
-class ASN1_TLC_st(Structure):
-    pass
-ASN1_TLC = ASN1_TLC_st
-ASN1_TLC_st._fields_ = [
-]
-class ASN1_VALUE_st(Structure):
-    pass
-ASN1_VALUE_st._fields_ = [
-]
-ASN1_VALUE = ASN1_VALUE_st
-ASN1_ITEM_EXP = ASN1_ITEM
-class asn1_type_st(Structure):
-    pass
-class N12asn1_type_st4DOLLAR_11E(Union):
-    pass
-ASN1_BOOLEAN = c_int
-ASN1_INTEGER = asn1_string_st
-ASN1_ENUMERATED = asn1_string_st
-ASN1_BIT_STRING = asn1_string_st
-ASN1_OCTET_STRING = asn1_string_st
-ASN1_PRINTABLESTRING = asn1_string_st
-ASN1_T61STRING = asn1_string_st
-ASN1_IA5STRING = asn1_string_st
-ASN1_GENERALSTRING = asn1_string_st
-ASN1_BMPSTRING = asn1_string_st
-ASN1_UNIVERSALSTRING = asn1_string_st
-ASN1_UTCTIME = asn1_string_st
-ASN1_GENERALIZEDTIME = asn1_string_st
-ASN1_VISIBLESTRING = asn1_string_st
-ASN1_UTF8STRING = asn1_string_st
-N12asn1_type_st4DOLLAR_11E._fields_ = [
-    ('ptr', STRING),
-    ('boolean', ASN1_BOOLEAN),
-    ('asn1_string', POINTER(ASN1_STRING)),
-    ('object', POINTER(ASN1_OBJECT)),
-    ('integer', POINTER(ASN1_INTEGER)),
-    ('enumerated', POINTER(ASN1_ENUMERATED)),
-    ('bit_string', POINTER(ASN1_BIT_STRING)),
-    ('octet_string', POINTER(ASN1_OCTET_STRING)),
-    ('printablestring', POINTER(ASN1_PRINTABLESTRING)),
-    ('t61string', POINTER(ASN1_T61STRING)),
-    ('ia5string', POINTER(ASN1_IA5STRING)),
-    ('generalstring', POINTER(ASN1_GENERALSTRING)),
-    ('bmpstring', POINTER(ASN1_BMPSTRING)),
-    ('universalstring', POINTER(ASN1_UNIVERSALSTRING)),
-    ('utctime', POINTER(ASN1_UTCTIME)),
-    ('generalizedtime', POINTER(ASN1_GENERALIZEDTIME)),
-    ('visiblestring', POINTER(ASN1_VISIBLESTRING)),
-    ('utf8string', POINTER(ASN1_UTF8STRING)),
-    ('set', POINTER(ASN1_STRING)),
-    ('sequence', POINTER(ASN1_STRING)),
-]
-assert sizeof(N12asn1_type_st4DOLLAR_11E) == 4, sizeof(N12asn1_type_st4DOLLAR_11E)
-assert alignment(N12asn1_type_st4DOLLAR_11E) == 4, alignment(N12asn1_type_st4DOLLAR_11E)
-asn1_type_st._fields_ = [
-    ('type', c_int),
-    ('value', N12asn1_type_st4DOLLAR_11E),
-]
-assert sizeof(asn1_type_st) == 8, sizeof(asn1_type_st)
-assert alignment(asn1_type_st) == 4, alignment(asn1_type_st)
-ASN1_TYPE = asn1_type_st
-class asn1_method_st(Structure):
-    pass
-asn1_method_st._fields_ = [
-    ('i2d', CFUNCTYPE(c_int)),
-    ('d2i', CFUNCTYPE(STRING)),
-    ('create', CFUNCTYPE(STRING)),
-    ('destroy', CFUNCTYPE(None)),
-]
-assert sizeof(asn1_method_st) == 16, sizeof(asn1_method_st)
-assert alignment(asn1_method_st) == 4, alignment(asn1_method_st)
-ASN1_METHOD = asn1_method_st
-class asn1_header_st(Structure):
-    pass
-asn1_header_st._fields_ = [
-    ('header', POINTER(ASN1_OCTET_STRING)),
-    ('data', STRING),
-    ('meth', POINTER(ASN1_METHOD)),
-]
-assert sizeof(asn1_header_st) == 12, sizeof(asn1_header_st)
-assert alignment(asn1_header_st) == 4, alignment(asn1_header_st)
-ASN1_HEADER = asn1_header_st
-class BIT_STRING_BITNAME_st(Structure):
-    pass
-BIT_STRING_BITNAME_st._fields_ = [
-    ('bitnum', c_int),
-    ('lname', STRING),
-    ('sname', STRING),
-]
-assert sizeof(BIT_STRING_BITNAME_st) == 12, sizeof(BIT_STRING_BITNAME_st)
-assert alignment(BIT_STRING_BITNAME_st) == 4, alignment(BIT_STRING_BITNAME_st)
-BIT_STRING_BITNAME = BIT_STRING_BITNAME_st
-class bio_st(Structure):
-    pass
-BIO = bio_st
-bio_info_cb = CFUNCTYPE(None, POINTER(bio_st), c_int, STRING, c_int, c_long, c_long)
-class bio_method_st(Structure):
-    pass
-bio_method_st._fields_ = [
-    ('type', c_int),
-    ('name', STRING),
-    ('bwrite', CFUNCTYPE(c_int, POINTER(BIO), STRING, c_int)),
-    ('bread', CFUNCTYPE(c_int, POINTER(BIO), STRING, c_int)),
-    ('bputs', CFUNCTYPE(c_int, POINTER(BIO), STRING)),
-    ('bgets', CFUNCTYPE(c_int, POINTER(BIO), STRING, c_int)),
-    ('ctrl', CFUNCTYPE(c_long, POINTER(BIO), c_int, c_long, c_void_p)),
-    ('create', CFUNCTYPE(c_int, POINTER(BIO))),
-    ('destroy', CFUNCTYPE(c_int, POINTER(BIO))),
-    ('callback_ctrl', CFUNCTYPE(c_long, POINTER(BIO), c_int, POINTER(bio_info_cb))),
-]
-assert sizeof(bio_method_st) == 40, sizeof(bio_method_st)
-assert alignment(bio_method_st) == 4, alignment(bio_method_st)
-BIO_METHOD = bio_method_st
-class crypto_ex_data_st(Structure):
-    pass
-class stack_st(Structure):
-    pass
-STACK = stack_st
-crypto_ex_data_st._fields_ = [
-    ('sk', POINTER(STACK)),
-    ('dummy', c_int),
-]
-assert sizeof(crypto_ex_data_st) == 8, sizeof(crypto_ex_data_st)
-assert alignment(crypto_ex_data_st) == 4, alignment(crypto_ex_data_st)
-CRYPTO_EX_DATA = crypto_ex_data_st
-bio_st._fields_ = [
-    ('method', POINTER(BIO_METHOD)),
-    ('callback', CFUNCTYPE(c_long, POINTER(bio_st), c_int, STRING, c_int, c_long, c_long)),
-    ('cb_arg', STRING),
-    ('init', c_int),
-    ('shutdown', c_int),
-    ('flags', c_int),
-    ('retry_reason', c_int),
-    ('num', c_int),
-    ('ptr', c_void_p),
-    ('next_bio', POINTER(bio_st)),
-    ('prev_bio', POINTER(bio_st)),
-    ('references', c_int),
-    ('num_read', c_ulong),
-    ('num_write', c_ulong),
-    ('ex_data', CRYPTO_EX_DATA),
-]
-assert sizeof(bio_st) == 64, sizeof(bio_st)
-assert alignment(bio_st) == 4, alignment(bio_st)
-class bio_f_buffer_ctx_struct(Structure):
-    pass
-bio_f_buffer_ctx_struct._fields_ = [
-    ('ibuf_size', c_int),
-    ('obuf_size', c_int),
-    ('ibuf', STRING),
-    ('ibuf_len', c_int),
-    ('ibuf_off', c_int),
-    ('obuf', STRING),
-    ('obuf_len', c_int),
-    ('obuf_off', c_int),
-]
-assert sizeof(bio_f_buffer_ctx_struct) == 32, sizeof(bio_f_buffer_ctx_struct)
-assert alignment(bio_f_buffer_ctx_struct) == 4, alignment(bio_f_buffer_ctx_struct)
-BIO_F_BUFFER_CTX = bio_f_buffer_ctx_struct
-class hostent(Structure):
-    pass
-hostent._fields_ = [
-]
-class bf_key_st(Structure):
-    pass
-bf_key_st._fields_ = [
-    ('P', c_uint * 18),
-    ('S', c_uint * 1024),
-]
-assert sizeof(bf_key_st) == 4168, sizeof(bf_key_st)
-assert alignment(bf_key_st) == 4, alignment(bf_key_st)
-BF_KEY = bf_key_st
-class bignum_st(Structure):
-    pass
-bignum_st._fields_ = [
-    ('d', POINTER(c_ulong)),
-    ('top', c_int),
-    ('dmax', c_int),
-    ('neg', c_int),
-    ('flags', c_int),
-]
-assert sizeof(bignum_st) == 20, sizeof(bignum_st)
-assert alignment(bignum_st) == 4, alignment(bignum_st)
-BIGNUM = bignum_st
-class bignum_ctx(Structure):
-    pass
-bignum_ctx._fields_ = [
-]
-BN_CTX = bignum_ctx
-class bn_blinding_st(Structure):
-    pass
-bn_blinding_st._fields_ = [
-    ('init', c_int),
-    ('A', POINTER(BIGNUM)),
-    ('Ai', POINTER(BIGNUM)),
-    ('mod', POINTER(BIGNUM)),
-    ('thread_id', c_ulong),
-]
-assert sizeof(bn_blinding_st) == 20, sizeof(bn_blinding_st)
-assert alignment(bn_blinding_st) == 4, alignment(bn_blinding_st)
-BN_BLINDING = bn_blinding_st
-class bn_mont_ctx_st(Structure):
-    pass
-bn_mont_ctx_st._fields_ = [
-    ('ri', c_int),
-    ('RR', BIGNUM),
-    ('N', BIGNUM),
-    ('Ni', BIGNUM),
-    ('n0', c_ulong),
-    ('flags', c_int),
-]
-assert sizeof(bn_mont_ctx_st) == 72, sizeof(bn_mont_ctx_st)
-assert alignment(bn_mont_ctx_st) == 4, alignment(bn_mont_ctx_st)
-BN_MONT_CTX = bn_mont_ctx_st
-class bn_recp_ctx_st(Structure):
-    pass
-bn_recp_ctx_st._fields_ = [
-    ('N', BIGNUM),
-    ('Nr', BIGNUM),
-    ('num_bits', c_int),
-    ('shift', c_int),
-    ('flags', c_int),
-]
-assert sizeof(bn_recp_ctx_st) == 52, sizeof(bn_recp_ctx_st)
-assert alignment(bn_recp_ctx_st) == 4, alignment(bn_recp_ctx_st)
-BN_RECP_CTX = bn_recp_ctx_st
-class buf_mem_st(Structure):
-    pass
-buf_mem_st._fields_ = [
-    ('length', c_int),
-    ('data', STRING),
-    ('max', c_int),
-]
-assert sizeof(buf_mem_st) == 12, sizeof(buf_mem_st)
-assert alignment(buf_mem_st) == 4, alignment(buf_mem_st)
-BUF_MEM = buf_mem_st
-class cast_key_st(Structure):
-    pass
-cast_key_st._fields_ = [
-    ('data', c_ulong * 32),
-    ('short_key', c_int),
-]
-assert sizeof(cast_key_st) == 132, sizeof(cast_key_st)
-assert alignment(cast_key_st) == 4, alignment(cast_key_st)
-CAST_KEY = cast_key_st
-class comp_method_st(Structure):
-    pass
-comp_method_st._fields_ = [
-    ('type', c_int),
-    ('name', STRING),
-    ('init', CFUNCTYPE(c_int)),
-    ('finish', CFUNCTYPE(None)),
-    ('compress', CFUNCTYPE(c_int)),
-    ('expand', CFUNCTYPE(c_int)),
-    ('ctrl', CFUNCTYPE(c_long)),
-    ('callback_ctrl', CFUNCTYPE(c_long)),
-]
-assert sizeof(comp_method_st) == 32, sizeof(comp_method_st)
-assert alignment(comp_method_st) == 4, alignment(comp_method_st)
-COMP_METHOD = comp_method_st
-class comp_ctx_st(Structure):
-    pass
-comp_ctx_st._fields_ = [
-    ('meth', POINTER(COMP_METHOD)),
-    ('compress_in', c_ulong),
-    ('compress_out', c_ulong),
-    ('expand_in', c_ulong),
-    ('expand_out', c_ulong),
-    ('ex_data', CRYPTO_EX_DATA),
-]
-assert sizeof(comp_ctx_st) == 28, sizeof(comp_ctx_st)
-assert alignment(comp_ctx_st) == 4, alignment(comp_ctx_st)
-COMP_CTX = comp_ctx_st
-class CRYPTO_dynlock_value(Structure):
-    pass
-CRYPTO_dynlock_value._fields_ = [
-]
-class CRYPTO_dynlock(Structure):
-    pass
-CRYPTO_dynlock._fields_ = [
-    ('references', c_int),
-    ('data', POINTER(CRYPTO_dynlock_value)),
-]
-assert sizeof(CRYPTO_dynlock) == 8, sizeof(CRYPTO_dynlock)
-assert alignment(CRYPTO_dynlock) == 4, alignment(CRYPTO_dynlock)
-BIO_dummy = bio_st
-CRYPTO_EX_new = CFUNCTYPE(c_int, c_void_p, c_void_p, POINTER(CRYPTO_EX_DATA), c_int, c_long, c_void_p)
-CRYPTO_EX_free = CFUNCTYPE(None, c_void_p, c_void_p, POINTER(CRYPTO_EX_DATA), c_int, c_long, c_void_p)
-CRYPTO_EX_dup = CFUNCTYPE(c_int, POINTER(CRYPTO_EX_DATA), POINTER(CRYPTO_EX_DATA), c_void_p, c_int, c_long, c_void_p)
-class crypto_ex_data_func_st(Structure):
-    pass
-crypto_ex_data_func_st._fields_ = [
-    ('argl', c_long),
-    ('argp', c_void_p),
-    ('new_func', POINTER(CRYPTO_EX_new)),
-    ('free_func', POINTER(CRYPTO_EX_free)),
-    ('dup_func', POINTER(CRYPTO_EX_dup)),
-]
-assert sizeof(crypto_ex_data_func_st) == 20, sizeof(crypto_ex_data_func_st)
-assert alignment(crypto_ex_data_func_st) == 4, alignment(crypto_ex_data_func_st)
-CRYPTO_EX_DATA_FUNCS = crypto_ex_data_func_st
-class st_CRYPTO_EX_DATA_IMPL(Structure):
-    pass
-CRYPTO_EX_DATA_IMPL = st_CRYPTO_EX_DATA_IMPL
-st_CRYPTO_EX_DATA_IMPL._fields_ = [
-]
-CRYPTO_MEM_LEAK_CB = CFUNCTYPE(c_void_p, c_ulong, STRING, c_int, c_int, c_void_p)
-DES_cblock = c_ubyte * 8
-const_DES_cblock = c_ubyte * 8
-class DES_ks(Structure):
-    pass
-class N6DES_ks3DOLLAR_9E(Union):
-    pass
-N6DES_ks3DOLLAR_9E._fields_ = [
-    ('cblock', DES_cblock),
-    ('deslong', c_ulong * 2),
-]
-assert sizeof(N6DES_ks3DOLLAR_9E) == 8, sizeof(N6DES_ks3DOLLAR_9E)
-assert alignment(N6DES_ks3DOLLAR_9E) == 4, alignment(N6DES_ks3DOLLAR_9E)
-DES_ks._fields_ = [
-    ('ks', N6DES_ks3DOLLAR_9E * 16),
-]
-assert sizeof(DES_ks) == 128, sizeof(DES_ks)
-assert alignment(DES_ks) == 4, alignment(DES_ks)
-DES_key_schedule = DES_ks
-_ossl_old_des_cblock = c_ubyte * 8
-class _ossl_old_des_ks_struct(Structure):
-    pass
-class N23_ossl_old_des_ks_struct4DOLLAR_10E(Union):
-    pass
-N23_ossl_old_des_ks_struct4DOLLAR_10E._fields_ = [
-    ('_', _ossl_old_des_cblock),
-    ('pad', c_ulong * 2),
-]
-assert sizeof(N23_ossl_old_des_ks_struct4DOLLAR_10E) == 8, sizeof(N23_ossl_old_des_ks_struct4DOLLAR_10E)
-assert alignment(N23_ossl_old_des_ks_struct4DOLLAR_10E) == 4, alignment(N23_ossl_old_des_ks_struct4DOLLAR_10E)
-_ossl_old_des_ks_struct._fields_ = [
-    ('ks', N23_ossl_old_des_ks_struct4DOLLAR_10E),
-]
-assert sizeof(_ossl_old_des_ks_struct) == 8, sizeof(_ossl_old_des_ks_struct)
-assert alignment(_ossl_old_des_ks_struct) == 4, alignment(_ossl_old_des_ks_struct)
-_ossl_old_des_key_schedule = _ossl_old_des_ks_struct * 16
-class dh_st(Structure):
-    pass
-DH = dh_st
-class dh_method(Structure):
-    pass
-dh_method._fields_ = [
-    ('name', STRING),
-    ('generate_key', CFUNCTYPE(c_int, POINTER(DH))),
-    ('compute_key', CFUNCTYPE(c_int, POINTER(c_ubyte), POINTER(BIGNUM), POINTER(DH))),
-    ('bn_mod_exp', CFUNCTYPE(c_int, POINTER(DH), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BN_CTX), POINTER(BN_MONT_CTX))),
-    ('init', CFUNCTYPE(c_int, POINTER(DH))),
-    ('finish', CFUNCTYPE(c_int, POINTER(DH))),
-    ('flags', c_int),
-    ('app_data', STRING),
-]
-assert sizeof(dh_method) == 32, sizeof(dh_method)
-assert alignment(dh_method) == 4, alignment(dh_method)
-DH_METHOD = dh_method
-class engine_st(Structure):
-    pass
-ENGINE = engine_st
-dh_st._fields_ = [
-    ('pad', c_int),
-    ('version', c_int),
-    ('p', POINTER(BIGNUM)),
-    ('g', POINTER(BIGNUM)),
-    ('length', c_long),
-    ('pub_key', POINTER(BIGNUM)),
-    ('priv_key', POINTER(BIGNUM)),
-    ('flags', c_int),
-    ('method_mont_p', STRING),
-    ('q', POINTER(BIGNUM)),
-    ('j', POINTER(BIGNUM)),
-    ('seed', POINTER(c_ubyte)),
-    ('seedlen', c_int),
-    ('counter', POINTER(BIGNUM)),
-    ('references', c_int),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('meth', POINTER(DH_METHOD)),
-    ('engine', POINTER(ENGINE)),
-]
-assert sizeof(dh_st) == 76, sizeof(dh_st)
-assert alignment(dh_st) == 4, alignment(dh_st)
-class dsa_st(Structure):
-    pass
-DSA = dsa_st
-class DSA_SIG_st(Structure):
-    pass
-DSA_SIG_st._fields_ = [
-    ('r', POINTER(BIGNUM)),
-    ('s', POINTER(BIGNUM)),
-]
-assert sizeof(DSA_SIG_st) == 8, sizeof(DSA_SIG_st)
-assert alignment(DSA_SIG_st) == 4, alignment(DSA_SIG_st)
-DSA_SIG = DSA_SIG_st
-class dsa_method(Structure):
-    pass
-dsa_method._fields_ = [
-    ('name', STRING),
-    ('dsa_do_sign', CFUNCTYPE(POINTER(DSA_SIG), POINTER(c_ubyte), c_int, POINTER(DSA))),
-    ('dsa_sign_setup', CFUNCTYPE(c_int, POINTER(DSA), POINTER(BN_CTX), POINTER(POINTER(BIGNUM)), POINTER(POINTER(BIGNUM)))),
-    ('dsa_do_verify', CFUNCTYPE(c_int, POINTER(c_ubyte), c_int, POINTER(DSA_SIG), POINTER(DSA))),
-    ('dsa_mod_exp', CFUNCTYPE(c_int, POINTER(DSA), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BN_CTX), POINTER(BN_MONT_CTX))),
-    ('bn_mod_exp', CFUNCTYPE(c_int, POINTER(DSA), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BN_CTX), POINTER(BN_MONT_CTX))),
-    ('init', CFUNCTYPE(c_int, POINTER(DSA))),
-    ('finish', CFUNCTYPE(c_int, POINTER(DSA))),
-    ('flags', c_int),
-    ('app_data', STRING),
-]
-assert sizeof(dsa_method) == 40, sizeof(dsa_method)
-assert alignment(dsa_method) == 4, alignment(dsa_method)
-DSA_METHOD = dsa_method
-dsa_st._fields_ = [
-    ('pad', c_int),
-    ('version', c_long),
-    ('write_params', c_int),
-    ('p', POINTER(BIGNUM)),
-    ('q', POINTER(BIGNUM)),
-    ('g', POINTER(BIGNUM)),
-    ('pub_key', POINTER(BIGNUM)),
-    ('priv_key', POINTER(BIGNUM)),
-    ('kinv', POINTER(BIGNUM)),
-    ('r', POINTER(BIGNUM)),
-    ('flags', c_int),
-    ('method_mont_p', STRING),
-    ('references', c_int),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('meth', POINTER(DSA_METHOD)),
-    ('engine', POINTER(ENGINE)),
-]
-assert sizeof(dsa_st) == 68, sizeof(dsa_st)
-assert alignment(dsa_st) == 4, alignment(dsa_st)
-class evp_pkey_st(Structure):
-    pass
-class N11evp_pkey_st4DOLLAR_12E(Union):
-    pass
-class rsa_st(Structure):
-    pass
-N11evp_pkey_st4DOLLAR_12E._fields_ = [
-    ('ptr', STRING),
-    ('rsa', POINTER(rsa_st)),
-    ('dsa', POINTER(dsa_st)),
-    ('dh', POINTER(dh_st)),
-]
-assert sizeof(N11evp_pkey_st4DOLLAR_12E) == 4, sizeof(N11evp_pkey_st4DOLLAR_12E)
-assert alignment(N11evp_pkey_st4DOLLAR_12E) == 4, alignment(N11evp_pkey_st4DOLLAR_12E)
-evp_pkey_st._fields_ = [
-    ('type', c_int),
-    ('save_type', c_int),
-    ('references', c_int),
-    ('pkey', N11evp_pkey_st4DOLLAR_12E),
-    ('save_parameters', c_int),
-    ('attributes', POINTER(STACK)),
-]
-assert sizeof(evp_pkey_st) == 24, sizeof(evp_pkey_st)
-assert alignment(evp_pkey_st) == 4, alignment(evp_pkey_st)
-class env_md_st(Structure):
-    pass
-class env_md_ctx_st(Structure):
-    pass
-EVP_MD_CTX = env_md_ctx_st
-env_md_st._fields_ = [
-    ('type', c_int),
-    ('pkey_type', c_int),
-    ('md_size', c_int),
-    ('flags', c_ulong),
-    ('init', CFUNCTYPE(c_int, POINTER(EVP_MD_CTX))),
-    ('update', CFUNCTYPE(c_int, POINTER(EVP_MD_CTX), c_void_p, c_ulong)),
-    ('final', CFUNCTYPE(c_int, POINTER(EVP_MD_CTX), POINTER(c_ubyte))),
-    ('copy', CFUNCTYPE(c_int, POINTER(EVP_MD_CTX), POINTER(EVP_MD_CTX))),
-    ('cleanup', CFUNCTYPE(c_int, POINTER(EVP_MD_CTX))),
-    ('sign', CFUNCTYPE(c_int)),
-    ('verify', CFUNCTYPE(c_int)),
-    ('required_pkey_type', c_int * 5),
-    ('block_size', c_int),
-    ('ctx_size', c_int),
-]
-assert sizeof(env_md_st) == 72, sizeof(env_md_st)
-assert alignment(env_md_st) == 4, alignment(env_md_st)
-EVP_MD = env_md_st
-env_md_ctx_st._fields_ = [
-    ('digest', POINTER(EVP_MD)),
-    ('engine', POINTER(ENGINE)),
-    ('flags', c_ulong),
-    ('md_data', c_void_p),
-]
-assert sizeof(env_md_ctx_st) == 16, sizeof(env_md_ctx_st)
-assert alignment(env_md_ctx_st) == 4, alignment(env_md_ctx_st)
-class evp_cipher_st(Structure):
-    pass
-class evp_cipher_ctx_st(Structure):
-    pass
-EVP_CIPHER_CTX = evp_cipher_ctx_st
-evp_cipher_st._fields_ = [
-    ('nid', c_int),
-    ('block_size', c_int),
-    ('key_len', c_int),
-    ('iv_len', c_int),
-    ('flags', c_ulong),
-    ('init', CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX), POINTER(c_ubyte), POINTER(c_ubyte), c_int)),
-    ('do_cipher', CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX), POINTER(c_ubyte), POINTER(c_ubyte), c_uint)),
-    ('cleanup', CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX))),
-    ('ctx_size', c_int),
-    ('set_asn1_parameters', CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX), POINTER(ASN1_TYPE))),
-    ('get_asn1_parameters', CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX), POINTER(ASN1_TYPE))),
-    ('ctrl', CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX), c_int, c_int, c_void_p)),
-    ('app_data', c_void_p),
-]
-assert sizeof(evp_cipher_st) == 52, sizeof(evp_cipher_st)
-assert alignment(evp_cipher_st) == 4, alignment(evp_cipher_st)
-class evp_cipher_info_st(Structure):
-    pass
-EVP_CIPHER = evp_cipher_st
-evp_cipher_info_st._fields_ = [
-    ('cipher', POINTER(EVP_CIPHER)),
-    ('iv', c_ubyte * 16),
-]
-assert sizeof(evp_cipher_info_st) == 20, sizeof(evp_cipher_info_st)
-assert alignment(evp_cipher_info_st) == 4, alignment(evp_cipher_info_st)
-EVP_CIPHER_INFO = evp_cipher_info_st
-evp_cipher_ctx_st._fields_ = [
-    ('cipher', POINTER(EVP_CIPHER)),
-    ('engine', POINTER(ENGINE)),
-    ('encrypt', c_int),
-    ('buf_len', c_int),
-    ('oiv', c_ubyte * 16),
-    ('iv', c_ubyte * 16),
-    ('buf', c_ubyte * 32),
-    ('num', c_int),
-    ('app_data', c_void_p),
-    ('key_len', c_int),
-    ('flags', c_ulong),
-    ('cipher_data', c_void_p),
-    ('final_used', c_int),
-    ('block_mask', c_int),
-    ('final', c_ubyte * 32),
-]
-assert sizeof(evp_cipher_ctx_st) == 140, sizeof(evp_cipher_ctx_st)
-assert alignment(evp_cipher_ctx_st) == 4, alignment(evp_cipher_ctx_st)
-class evp_Encode_Ctx_st(Structure):
-    pass
-evp_Encode_Ctx_st._fields_ = [
-    ('num', c_int),
-    ('length', c_int),
-    ('enc_data', c_ubyte * 80),
-    ('line_num', c_int),
-    ('expect_nl', c_int),
-]
-assert sizeof(evp_Encode_Ctx_st) == 96, sizeof(evp_Encode_Ctx_st)
-assert alignment(evp_Encode_Ctx_st) == 4, alignment(evp_Encode_Ctx_st)
-EVP_ENCODE_CTX = evp_Encode_Ctx_st
-EVP_PBE_KEYGEN = CFUNCTYPE(c_int, POINTER(EVP_CIPHER_CTX), STRING, c_int, POINTER(ASN1_TYPE), POINTER(EVP_CIPHER), POINTER(EVP_MD), c_int)
-class lhash_node_st(Structure):
-    pass
-lhash_node_st._fields_ = [
-    ('data', c_void_p),
-    ('next', POINTER(lhash_node_st)),
-    ('hash', c_ulong),
-]
-assert sizeof(lhash_node_st) == 12, sizeof(lhash_node_st)
-assert alignment(lhash_node_st) == 4, alignment(lhash_node_st)
-LHASH_NODE = lhash_node_st
-LHASH_COMP_FN_TYPE = CFUNCTYPE(c_int, c_void_p, c_void_p)
-LHASH_HASH_FN_TYPE = CFUNCTYPE(c_ulong, c_void_p)
-LHASH_DOALL_FN_TYPE = CFUNCTYPE(None, c_void_p)
-LHASH_DOALL_ARG_FN_TYPE = CFUNCTYPE(None, c_void_p, c_void_p)
-class lhash_st(Structure):
-    pass
-lhash_st._fields_ = [
-    ('b', POINTER(POINTER(LHASH_NODE))),
-    ('comp', LHASH_COMP_FN_TYPE),
-    ('hash', LHASH_HASH_FN_TYPE),
-    ('num_nodes', c_uint),
-    ('num_alloc_nodes', c_uint),
-    ('p', c_uint),
-    ('pmax', c_uint),
-    ('up_load', c_ulong),
-    ('down_load', c_ulong),
-    ('num_items', c_ulong),
-    ('num_expands', c_ulong),
-    ('num_expand_reallocs', c_ulong),
-    ('num_contracts', c_ulong),
-    ('num_contract_reallocs', c_ulong),
-    ('num_hash_calls', c_ulong),
-    ('num_comp_calls', c_ulong),
-    ('num_insert', c_ulong),
-    ('num_replace', c_ulong),
-    ('num_delete', c_ulong),
-    ('num_no_delete', c_ulong),
-    ('num_retrieve', c_ulong),
-    ('num_retrieve_miss', c_ulong),
-    ('num_hash_comps', c_ulong),
-    ('error', c_int),
-]
-assert sizeof(lhash_st) == 96, sizeof(lhash_st)
-assert alignment(lhash_st) == 4, alignment(lhash_st)
-LHASH = lhash_st
-class MD2state_st(Structure):
-    pass
-MD2state_st._fields_ = [
-    ('num', c_int),
-    ('data', c_ubyte * 16),
-    ('cksm', c_uint * 16),
-    ('state', c_uint * 16),
-]
-assert sizeof(MD2state_st) == 148, sizeof(MD2state_st)
-assert alignment(MD2state_st) == 4, alignment(MD2state_st)
-MD2_CTX = MD2state_st
-class MD4state_st(Structure):
-    pass
-MD4state_st._fields_ = [
-    ('A', c_uint),
-    ('B', c_uint),
-    ('C', c_uint),
-    ('D', c_uint),
-    ('Nl', c_uint),
-    ('Nh', c_uint),
-    ('data', c_uint * 16),
-    ('num', c_int),
-]
-assert sizeof(MD4state_st) == 92, sizeof(MD4state_st)
-assert alignment(MD4state_st) == 4, alignment(MD4state_st)
-MD4_CTX = MD4state_st
-class MD5state_st(Structure):
-    pass
-MD5state_st._fields_ = [
-    ('A', c_uint),
-    ('B', c_uint),
-    ('C', c_uint),
-    ('D', c_uint),
-    ('Nl', c_uint),
-    ('Nh', c_uint),
-    ('data', c_uint * 16),
-    ('num', c_int),
-]
-assert sizeof(MD5state_st) == 92, sizeof(MD5state_st)
-assert alignment(MD5state_st) == 4, alignment(MD5state_st)
-MD5_CTX = MD5state_st
-class mdc2_ctx_st(Structure):
-    pass
-mdc2_ctx_st._fields_ = [
-    ('num', c_int),
-    ('data', c_ubyte * 8),
-    ('h', DES_cblock),
-    ('hh', DES_cblock),
-    ('pad_type', c_int),
-]
-assert sizeof(mdc2_ctx_st) == 32, sizeof(mdc2_ctx_st)
-assert alignment(mdc2_ctx_st) == 4, alignment(mdc2_ctx_st)
-MDC2_CTX = mdc2_ctx_st
-class obj_name_st(Structure):
-    pass
-obj_name_st._fields_ = [
-    ('type', c_int),
-    ('alias', c_int),
-    ('name', STRING),
-    ('data', STRING),
-]
-assert sizeof(obj_name_st) == 16, sizeof(obj_name_st)
-assert alignment(obj_name_st) == 4, alignment(obj_name_st)
-OBJ_NAME = obj_name_st
-ASN1_TIME = asn1_string_st
-ASN1_NULL = c_int
-EVP_PKEY = evp_pkey_st
-class x509_st(Structure):
-    pass
-X509 = x509_st
-class X509_algor_st(Structure):
-    pass
-X509_ALGOR = X509_algor_st
-class X509_crl_st(Structure):
-    pass
-X509_CRL = X509_crl_st
-class X509_name_st(Structure):
-    pass
-X509_NAME = X509_name_st
-class x509_store_st(Structure):
-    pass
-X509_STORE = x509_store_st
-class x509_store_ctx_st(Structure):
-    pass
-X509_STORE_CTX = x509_store_ctx_st
-engine_st._fields_ = [
-]
-class PEM_Encode_Seal_st(Structure):
-    pass
-PEM_Encode_Seal_st._fields_ = [
-    ('encode', EVP_ENCODE_CTX),
-    ('md', EVP_MD_CTX),
-    ('cipher', EVP_CIPHER_CTX),
-]
-assert sizeof(PEM_Encode_Seal_st) == 252, sizeof(PEM_Encode_Seal_st)
-assert alignment(PEM_Encode_Seal_st) == 4, alignment(PEM_Encode_Seal_st)
-PEM_ENCODE_SEAL_CTX = PEM_Encode_Seal_st
-class pem_recip_st(Structure):
-    pass
-pem_recip_st._fields_ = [
-    ('name', STRING),
-    ('dn', POINTER(X509_NAME)),
-    ('cipher', c_int),
-    ('key_enc', c_int),
-]
-assert sizeof(pem_recip_st) == 16, sizeof(pem_recip_st)
-assert alignment(pem_recip_st) == 4, alignment(pem_recip_st)
-PEM_USER = pem_recip_st
-class pem_ctx_st(Structure):
-    pass
-class N10pem_ctx_st4DOLLAR_16E(Structure):
-    pass
-N10pem_ctx_st4DOLLAR_16E._fields_ = [
-    ('version', c_int),
-    ('mode', c_int),
-]
-assert sizeof(N10pem_ctx_st4DOLLAR_16E) == 8, sizeof(N10pem_ctx_st4DOLLAR_16E)
-assert alignment(N10pem_ctx_st4DOLLAR_16E) == 4, alignment(N10pem_ctx_st4DOLLAR_16E)
-class N10pem_ctx_st4DOLLAR_17E(Structure):
-    pass
-N10pem_ctx_st4DOLLAR_17E._fields_ = [
-    ('cipher', c_int),
-]
-assert sizeof(N10pem_ctx_st4DOLLAR_17E) == 4, sizeof(N10pem_ctx_st4DOLLAR_17E)
-assert alignment(N10pem_ctx_st4DOLLAR_17E) == 4, alignment(N10pem_ctx_st4DOLLAR_17E)
-pem_ctx_st._fields_ = [
-    ('type', c_int),
-    ('proc_type', N10pem_ctx_st4DOLLAR_16E),
-    ('domain', STRING),
-    ('DEK_info', N10pem_ctx_st4DOLLAR_17E),
-    ('originator', POINTER(PEM_USER)),
-    ('num_recipient', c_int),
-    ('recipient', POINTER(POINTER(PEM_USER))),
-    ('x509_chain', POINTER(STACK)),
-    ('md', POINTER(EVP_MD)),
-    ('md_enc', c_int),
-    ('md_len', c_int),
-    ('md_data', STRING),
-    ('dec', POINTER(EVP_CIPHER)),
-    ('key_len', c_int),
-    ('key', POINTER(c_ubyte)),
-    ('data_enc', c_int),
-    ('data_len', c_int),
-    ('data', POINTER(c_ubyte)),
-]
-assert sizeof(pem_ctx_st) == 76, sizeof(pem_ctx_st)
-assert alignment(pem_ctx_st) == 4, alignment(pem_ctx_st)
-PEM_CTX = pem_ctx_st
-pem_password_cb = CFUNCTYPE(c_int, STRING, c_int, c_int, c_void_p)
-class pkcs7_issuer_and_serial_st(Structure):
-    pass
-pkcs7_issuer_and_serial_st._fields_ = [
-    ('issuer', POINTER(X509_NAME)),
-    ('serial', POINTER(ASN1_INTEGER)),
-]
-assert sizeof(pkcs7_issuer_and_serial_st) == 8, sizeof(pkcs7_issuer_and_serial_st)
-assert alignment(pkcs7_issuer_and_serial_st) == 4, alignment(pkcs7_issuer_and_serial_st)
-PKCS7_ISSUER_AND_SERIAL = pkcs7_issuer_and_serial_st
-class pkcs7_signer_info_st(Structure):
-    pass
-pkcs7_signer_info_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('issuer_and_serial', POINTER(PKCS7_ISSUER_AND_SERIAL)),
-    ('digest_alg', POINTER(X509_ALGOR)),
-    ('auth_attr', POINTER(STACK)),
-    ('digest_enc_alg', POINTER(X509_ALGOR)),
-    ('enc_digest', POINTER(ASN1_OCTET_STRING)),
-    ('unauth_attr', POINTER(STACK)),
-    ('pkey', POINTER(EVP_PKEY)),
-]
-assert sizeof(pkcs7_signer_info_st) == 32, sizeof(pkcs7_signer_info_st)
-assert alignment(pkcs7_signer_info_st) == 4, alignment(pkcs7_signer_info_st)
-PKCS7_SIGNER_INFO = pkcs7_signer_info_st
-class pkcs7_recip_info_st(Structure):
-    pass
-pkcs7_recip_info_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('issuer_and_serial', POINTER(PKCS7_ISSUER_AND_SERIAL)),
-    ('key_enc_algor', POINTER(X509_ALGOR)),
-    ('enc_key', POINTER(ASN1_OCTET_STRING)),
-    ('cert', POINTER(X509)),
-]
-assert sizeof(pkcs7_recip_info_st) == 20, sizeof(pkcs7_recip_info_st)
-assert alignment(pkcs7_recip_info_st) == 4, alignment(pkcs7_recip_info_st)
-PKCS7_RECIP_INFO = pkcs7_recip_info_st
-class pkcs7_signed_st(Structure):
-    pass
-class pkcs7_st(Structure):
-    pass
-pkcs7_signed_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('md_algs', POINTER(STACK)),
-    ('cert', POINTER(STACK)),
-    ('crl', POINTER(STACK)),
-    ('signer_info', POINTER(STACK)),
-    ('contents', POINTER(pkcs7_st)),
-]
-assert sizeof(pkcs7_signed_st) == 24, sizeof(pkcs7_signed_st)
-assert alignment(pkcs7_signed_st) == 4, alignment(pkcs7_signed_st)
-PKCS7_SIGNED = pkcs7_signed_st
-class pkcs7_enc_content_st(Structure):
-    pass
-pkcs7_enc_content_st._fields_ = [
-    ('content_type', POINTER(ASN1_OBJECT)),
-    ('algorithm', POINTER(X509_ALGOR)),
-    ('enc_data', POINTER(ASN1_OCTET_STRING)),
-    ('cipher', POINTER(EVP_CIPHER)),
-]
-assert sizeof(pkcs7_enc_content_st) == 16, sizeof(pkcs7_enc_content_st)
-assert alignment(pkcs7_enc_content_st) == 4, alignment(pkcs7_enc_content_st)
-PKCS7_ENC_CONTENT = pkcs7_enc_content_st
-class pkcs7_enveloped_st(Structure):
-    pass
-pkcs7_enveloped_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('recipientinfo', POINTER(STACK)),
-    ('enc_data', POINTER(PKCS7_ENC_CONTENT)),
-]
-assert sizeof(pkcs7_enveloped_st) == 12, sizeof(pkcs7_enveloped_st)
-assert alignment(pkcs7_enveloped_st) == 4, alignment(pkcs7_enveloped_st)
-PKCS7_ENVELOPE = pkcs7_enveloped_st
-class pkcs7_signedandenveloped_st(Structure):
-    pass
-pkcs7_signedandenveloped_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('md_algs', POINTER(STACK)),
-    ('cert', POINTER(STACK)),
-    ('crl', POINTER(STACK)),
-    ('signer_info', POINTER(STACK)),
-    ('enc_data', POINTER(PKCS7_ENC_CONTENT)),
-    ('recipientinfo', POINTER(STACK)),
-]
-assert sizeof(pkcs7_signedandenveloped_st) == 28, sizeof(pkcs7_signedandenveloped_st)
-assert alignment(pkcs7_signedandenveloped_st) == 4, alignment(pkcs7_signedandenveloped_st)
-PKCS7_SIGN_ENVELOPE = pkcs7_signedandenveloped_st
-class pkcs7_digest_st(Structure):
-    pass
-pkcs7_digest_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('md', POINTER(X509_ALGOR)),
-    ('contents', POINTER(pkcs7_st)),
-    ('digest', POINTER(ASN1_OCTET_STRING)),
-]
-assert sizeof(pkcs7_digest_st) == 16, sizeof(pkcs7_digest_st)
-assert alignment(pkcs7_digest_st) == 4, alignment(pkcs7_digest_st)
-PKCS7_DIGEST = pkcs7_digest_st
-class pkcs7_encrypted_st(Structure):
-    pass
-pkcs7_encrypted_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('enc_data', POINTER(PKCS7_ENC_CONTENT)),
-]
-assert sizeof(pkcs7_encrypted_st) == 8, sizeof(pkcs7_encrypted_st)
-assert alignment(pkcs7_encrypted_st) == 4, alignment(pkcs7_encrypted_st)
-PKCS7_ENCRYPT = pkcs7_encrypted_st
-class N8pkcs7_st4DOLLAR_15E(Union):
-    pass
-N8pkcs7_st4DOLLAR_15E._fields_ = [
-    ('ptr', STRING),
-    ('data', POINTER(ASN1_OCTET_STRING)),
-    ('sign', POINTER(PKCS7_SIGNED)),
-    ('enveloped', POINTER(PKCS7_ENVELOPE)),
-    ('signed_and_enveloped', POINTER(PKCS7_SIGN_ENVELOPE)),
-    ('digest', POINTER(PKCS7_DIGEST)),
-    ('encrypted', POINTER(PKCS7_ENCRYPT)),
-    ('other', POINTER(ASN1_TYPE)),
-]
-assert sizeof(N8pkcs7_st4DOLLAR_15E) == 4, sizeof(N8pkcs7_st4DOLLAR_15E)
-assert alignment(N8pkcs7_st4DOLLAR_15E) == 4, alignment(N8pkcs7_st4DOLLAR_15E)
-pkcs7_st._fields_ = [
-    ('asn1', POINTER(c_ubyte)),
-    ('length', c_long),
-    ('state', c_int),
-    ('detached', c_int),
-    ('type', POINTER(ASN1_OBJECT)),
-    ('d', N8pkcs7_st4DOLLAR_15E),
-]
-assert sizeof(pkcs7_st) == 24, sizeof(pkcs7_st)
-assert alignment(pkcs7_st) == 4, alignment(pkcs7_st)
-PKCS7 = pkcs7_st
-class rc2_key_st(Structure):
-    pass
-rc2_key_st._fields_ = [
-    ('data', c_uint * 64),
-]
-assert sizeof(rc2_key_st) == 256, sizeof(rc2_key_st)
-assert alignment(rc2_key_st) == 4, alignment(rc2_key_st)
-RC2_KEY = rc2_key_st
-class rc4_key_st(Structure):
-    pass
-rc4_key_st._fields_ = [
-    ('x', c_ubyte),
-    ('y', c_ubyte),
-    ('data', c_ubyte * 256),
-]
-assert sizeof(rc4_key_st) == 258, sizeof(rc4_key_st)
-assert alignment(rc4_key_st) == 1, alignment(rc4_key_st)
-RC4_KEY = rc4_key_st
-class rc5_key_st(Structure):
-    pass
-rc5_key_st._fields_ = [
-    ('rounds', c_int),
-    ('data', c_ulong * 34),
-]
-assert sizeof(rc5_key_st) == 140, sizeof(rc5_key_st)
-assert alignment(rc5_key_st) == 4, alignment(rc5_key_st)
-RC5_32_KEY = rc5_key_st
-class RIPEMD160state_st(Structure):
-    pass
-RIPEMD160state_st._fields_ = [
-    ('A', c_uint),
-    ('B', c_uint),
-    ('C', c_uint),
-    ('D', c_uint),
-    ('E', c_uint),
-    ('Nl', c_uint),
-    ('Nh', c_uint),
-    ('data', c_uint * 16),
-    ('num', c_int),
-]
-assert sizeof(RIPEMD160state_st) == 96, sizeof(RIPEMD160state_st)
-assert alignment(RIPEMD160state_st) == 4, alignment(RIPEMD160state_st)
-RIPEMD160_CTX = RIPEMD160state_st
-RSA = rsa_st
-class rsa_meth_st(Structure):
-    pass
-rsa_meth_st._fields_ = [
-    ('name', STRING),
-    ('rsa_pub_enc', CFUNCTYPE(c_int, c_int, POINTER(c_ubyte), POINTER(c_ubyte), POINTER(RSA), c_int)),
-    ('rsa_pub_dec', CFUNCTYPE(c_int, c_int, POINTER(c_ubyte), POINTER(c_ubyte), POINTER(RSA), c_int)),
-    ('rsa_priv_enc', CFUNCTYPE(c_int, c_int, POINTER(c_ubyte), POINTER(c_ubyte), POINTER(RSA), c_int)),
-    ('rsa_priv_dec', CFUNCTYPE(c_int, c_int, POINTER(c_ubyte), POINTER(c_ubyte), POINTER(RSA), c_int)),
-    ('rsa_mod_exp', CFUNCTYPE(c_int, POINTER(BIGNUM), POINTER(BIGNUM), POINTER(RSA))),
-    ('bn_mod_exp', CFUNCTYPE(c_int, POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BIGNUM), POINTER(BN_CTX), POINTER(BN_MONT_CTX))),
-    ('init', CFUNCTYPE(c_int, POINTER(RSA))),
-    ('finish', CFUNCTYPE(c_int, POINTER(RSA))),
-    ('flags', c_int),
-    ('app_data', STRING),
-    ('rsa_sign', CFUNCTYPE(c_int, c_int, POINTER(c_ubyte), c_uint, POINTER(c_ubyte), POINTER(c_uint), POINTER(RSA))),
-    ('rsa_verify', CFUNCTYPE(c_int, c_int, POINTER(c_ubyte), c_uint, POINTER(c_ubyte), c_uint, POINTER(RSA))),
-]
-assert sizeof(rsa_meth_st) == 52, sizeof(rsa_meth_st)
-assert alignment(rsa_meth_st) == 4, alignment(rsa_meth_st)
-RSA_METHOD = rsa_meth_st
-rsa_st._fields_ = [
-    ('pad', c_int),
-    ('version', c_long),
-    ('meth', POINTER(RSA_METHOD)),
-    ('engine', POINTER(ENGINE)),
-    ('n', POINTER(BIGNUM)),
-    ('e', POINTER(BIGNUM)),
-    ('d', POINTER(BIGNUM)),
-    ('p', POINTER(BIGNUM)),
-    ('q', POINTER(BIGNUM)),
-    ('dmp1', POINTER(BIGNUM)),
-    ('dmq1', POINTER(BIGNUM)),
-    ('iqmp', POINTER(BIGNUM)),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('references', c_int),
-    ('flags', c_int),
-    ('_method_mod_n', POINTER(BN_MONT_CTX)),
-    ('_method_mod_p', POINTER(BN_MONT_CTX)),
-    ('_method_mod_q', POINTER(BN_MONT_CTX)),
-    ('bignum_data', STRING),
-    ('blinding', POINTER(BN_BLINDING)),
-]
-assert sizeof(rsa_st) == 84, sizeof(rsa_st)
-assert alignment(rsa_st) == 4, alignment(rsa_st)
-openssl_fptr = CFUNCTYPE(None)
-class SHAstate_st(Structure):
-    pass
-SHAstate_st._fields_ = [
-    ('h0', c_uint),
-    ('h1', c_uint),
-    ('h2', c_uint),
-    ('h3', c_uint),
-    ('h4', c_uint),
-    ('Nl', c_uint),
-    ('Nh', c_uint),
-    ('data', c_uint * 16),
-    ('num', c_int),
-]
-assert sizeof(SHAstate_st) == 96, sizeof(SHAstate_st)
-assert alignment(SHAstate_st) == 4, alignment(SHAstate_st)
-SHA_CTX = SHAstate_st
-class ssl_st(Structure):
-    pass
-ssl_crock_st = POINTER(ssl_st)
-class ssl_cipher_st(Structure):
-    pass
-ssl_cipher_st._fields_ = [
-    ('valid', c_int),
-    ('name', STRING),
-    ('id', c_ulong),
-    ('algorithms', c_ulong),
-    ('algo_strength', c_ulong),
-    ('algorithm2', c_ulong),
-    ('strength_bits', c_int),
-    ('alg_bits', c_int),
-    ('mask', c_ulong),
-    ('mask_strength', c_ulong),
-]
-assert sizeof(ssl_cipher_st) == 40, sizeof(ssl_cipher_st)
-assert alignment(ssl_cipher_st) == 4, alignment(ssl_cipher_st)
-SSL_CIPHER = ssl_cipher_st
-SSL = ssl_st
-class ssl_ctx_st(Structure):
-    pass
-SSL_CTX = ssl_ctx_st
-class ssl_method_st(Structure):
-    pass
-class ssl3_enc_method(Structure):
-    pass
-ssl_method_st._fields_ = [
-    ('version', c_int),
-    ('ssl_new', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('ssl_clear', CFUNCTYPE(None, POINTER(SSL))),
-    ('ssl_free', CFUNCTYPE(None, POINTER(SSL))),
-    ('ssl_accept', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('ssl_connect', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('ssl_read', CFUNCTYPE(c_int, POINTER(SSL), c_void_p, c_int)),
-    ('ssl_peek', CFUNCTYPE(c_int, POINTER(SSL), c_void_p, c_int)),
-    ('ssl_write', CFUNCTYPE(c_int, POINTER(SSL), c_void_p, c_int)),
-    ('ssl_shutdown', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('ssl_renegotiate', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('ssl_renegotiate_check', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('ssl_ctrl', CFUNCTYPE(c_long, POINTER(SSL), c_int, c_long, c_void_p)),
-    ('ssl_ctx_ctrl', CFUNCTYPE(c_long, POINTER(SSL_CTX), c_int, c_long, c_void_p)),
-    ('get_cipher_by_char', CFUNCTYPE(POINTER(SSL_CIPHER), POINTER(c_ubyte))),
-    ('put_cipher_by_char', CFUNCTYPE(c_int, POINTER(SSL_CIPHER), POINTER(c_ubyte))),
-    ('ssl_pending', CFUNCTYPE(c_int, POINTER(SSL))),
-    ('num_ciphers', CFUNCTYPE(c_int)),
-    ('get_cipher', CFUNCTYPE(POINTER(SSL_CIPHER), c_uint)),
-    ('get_ssl_method', CFUNCTYPE(POINTER(ssl_method_st), c_int)),
-    ('get_timeout', CFUNCTYPE(c_long)),
-    ('ssl3_enc', POINTER(ssl3_enc_method)),
-    ('ssl_version', CFUNCTYPE(c_int)),
-    ('ssl_callback_ctrl', CFUNCTYPE(c_long, POINTER(SSL), c_int, CFUNCTYPE(None))),
-    ('ssl_ctx_callback_ctrl', CFUNCTYPE(c_long, POINTER(SSL_CTX), c_int, CFUNCTYPE(None))),
-]
-assert sizeof(ssl_method_st) == 100, sizeof(ssl_method_st)
-assert alignment(ssl_method_st) == 4, alignment(ssl_method_st)
-ssl3_enc_method._fields_ = [
-]
-SSL_METHOD = ssl_method_st
-class ssl_session_st(Structure):
-    pass
-class sess_cert_st(Structure):
-    pass
-ssl_session_st._fields_ = [
-    ('ssl_version', c_int),
-    ('key_arg_length', c_uint),
-    ('key_arg', c_ubyte * 8),
-    ('master_key_length', c_int),
-    ('master_key', c_ubyte * 48),
-    ('session_id_length', c_uint),
-    ('session_id', c_ubyte * 32),
-    ('sid_ctx_length', c_uint),
-    ('sid_ctx', c_ubyte * 32),
-    ('not_resumable', c_int),
-    ('sess_cert', POINTER(sess_cert_st)),
-    ('peer', POINTER(X509)),
-    ('verify_result', c_long),
-    ('references', c_int),
-    ('timeout', c_long),
-    ('time', c_long),
-    ('compress_meth', c_int),
-    ('cipher', POINTER(SSL_CIPHER)),
-    ('cipher_id', c_ulong),
-    ('ciphers', POINTER(STACK)),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('prev', POINTER(ssl_session_st)),
-    ('next', POINTER(ssl_session_st)),
-]
-assert sizeof(ssl_session_st) == 200, sizeof(ssl_session_st)
-assert alignment(ssl_session_st) == 4, alignment(ssl_session_st)
-sess_cert_st._fields_ = [
-]
-SSL_SESSION = ssl_session_st
-GEN_SESSION_CB = CFUNCTYPE(c_int, POINTER(SSL), POINTER(c_ubyte), POINTER(c_uint))
-class ssl_comp_st(Structure):
-    pass
-ssl_comp_st._fields_ = [
-    ('id', c_int),
-    ('name', STRING),
-    ('method', POINTER(COMP_METHOD)),
-]
-assert sizeof(ssl_comp_st) == 12, sizeof(ssl_comp_st)
-assert alignment(ssl_comp_st) == 4, alignment(ssl_comp_st)
-SSL_COMP = ssl_comp_st
-class N10ssl_ctx_st4DOLLAR_18E(Structure):
-    pass
-N10ssl_ctx_st4DOLLAR_18E._fields_ = [
-    ('sess_connect', c_int),
-    ('sess_connect_renegotiate', c_int),
-    ('sess_connect_good', c_int),
-    ('sess_accept', c_int),
-    ('sess_accept_renegotiate', c_int),
-    ('sess_accept_good', c_int),
-    ('sess_miss', c_int),
-    ('sess_timeout', c_int),
-    ('sess_cache_full', c_int),
-    ('sess_hit', c_int),
-    ('sess_cb_hit', c_int),
-]
-assert sizeof(N10ssl_ctx_st4DOLLAR_18E) == 44, sizeof(N10ssl_ctx_st4DOLLAR_18E)
-assert alignment(N10ssl_ctx_st4DOLLAR_18E) == 4, alignment(N10ssl_ctx_st4DOLLAR_18E)
-class cert_st(Structure):
-    pass
-ssl_ctx_st._fields_ = [
-    ('method', POINTER(SSL_METHOD)),
-    ('cipher_list', POINTER(STACK)),
-    ('cipher_list_by_id', POINTER(STACK)),
-    ('cert_store', POINTER(x509_store_st)),
-    ('sessions', POINTER(lhash_st)),
-    ('session_cache_size', c_ulong),
-    ('session_cache_head', POINTER(ssl_session_st)),
-    ('session_cache_tail', POINTER(ssl_session_st)),
-    ('session_cache_mode', c_int),
-    ('session_timeout', c_long),
-    ('new_session_cb', CFUNCTYPE(c_int, POINTER(ssl_st), POINTER(SSL_SESSION))),
-    ('remove_session_cb', CFUNCTYPE(None, POINTER(ssl_ctx_st), POINTER(SSL_SESSION))),
-    ('get_session_cb', CFUNCTYPE(POINTER(SSL_SESSION), POINTER(ssl_st), POINTER(c_ubyte), c_int, POINTER(c_int))),
-    ('stats', N10ssl_ctx_st4DOLLAR_18E),
-    ('references', c_int),
-    ('app_verify_callback', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), c_void_p)),
-    ('app_verify_arg', c_void_p),
-    ('default_passwd_callback', POINTER(pem_password_cb)),
-    ('default_passwd_callback_userdata', c_void_p),
-    ('client_cert_cb', CFUNCTYPE(c_int, POINTER(SSL), POINTER(POINTER(X509)), POINTER(POINTER(EVP_PKEY)))),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('rsa_md5', POINTER(EVP_MD)),
-    ('md5', POINTER(EVP_MD)),
-    ('sha1', POINTER(EVP_MD)),
-    ('extra_certs', POINTER(STACK)),
-    ('comp_methods', POINTER(STACK)),
-    ('info_callback', CFUNCTYPE(None, POINTER(SSL), c_int, c_int)),
-    ('client_CA', POINTER(STACK)),
-    ('options', c_ulong),
-    ('mode', c_ulong),
-    ('max_cert_list', c_long),
-    ('cert', POINTER(cert_st)),
-    ('read_ahead', c_int),
-    ('msg_callback', CFUNCTYPE(None, c_int, c_int, c_int, c_void_p, c_ulong, POINTER(SSL), c_void_p)),
-    ('msg_callback_arg', c_void_p),
-    ('verify_mode', c_int),
-    ('verify_depth', c_int),
-    ('sid_ctx_length', c_uint),
-    ('sid_ctx', c_ubyte * 32),
-    ('default_verify_callback', CFUNCTYPE(c_int, c_int, POINTER(X509_STORE_CTX))),
-    ('generate_session_id', GEN_SESSION_CB),
-    ('purpose', c_int),
-    ('trust', c_int),
-    ('quiet_shutdown', c_int),
-]
-assert sizeof(ssl_ctx_st) == 248, sizeof(ssl_ctx_st)
-assert alignment(ssl_ctx_st) == 4, alignment(ssl_ctx_st)
-cert_st._fields_ = [
-]
-class ssl2_state_st(Structure):
-    pass
-class ssl3_state_st(Structure):
-    pass
-ssl_st._fields_ = [
-    ('version', c_int),
-    ('type', c_int),
-    ('method', POINTER(SSL_METHOD)),
-    ('rbio', POINTER(BIO)),
-    ('wbio', POINTER(BIO)),
-    ('bbio', POINTER(BIO)),
-    ('rwstate', c_int),
-    ('in_handshake', c_int),
-    ('handshake_func', CFUNCTYPE(c_int)),
-    ('server', c_int),
-    ('new_session', c_int),
-    ('quiet_shutdown', c_int),
-    ('shutdown', c_int),
-    ('state', c_int),
-    ('rstate', c_int),
-    ('init_buf', POINTER(BUF_MEM)),
-    ('init_msg', c_void_p),
-    ('init_num', c_int),
-    ('init_off', c_int),
-    ('packet', POINTER(c_ubyte)),
-    ('packet_length', c_uint),
-    ('s2', POINTER(ssl2_state_st)),
-    ('s3', POINTER(ssl3_state_st)),
-    ('read_ahead', c_int),
-    ('msg_callback', CFUNCTYPE(None, c_int, c_int, c_int, c_void_p, c_ulong, POINTER(SSL), c_void_p)),
-    ('msg_callback_arg', c_void_p),
-    ('hit', c_int),
-    ('purpose', c_int),
-    ('trust', c_int),
-    ('cipher_list', POINTER(STACK)),
-    ('cipher_list_by_id', POINTER(STACK)),
-    ('enc_read_ctx', POINTER(EVP_CIPHER_CTX)),
-    ('read_hash', POINTER(EVP_MD)),
-    ('expand', POINTER(COMP_CTX)),
-    ('enc_write_ctx', POINTER(EVP_CIPHER_CTX)),
-    ('write_hash', POINTER(EVP_MD)),
-    ('compress', POINTER(COMP_CTX)),
-    ('cert', POINTER(cert_st)),
-    ('sid_ctx_length', c_uint),
-    ('sid_ctx', c_ubyte * 32),
-    ('session', POINTER(SSL_SESSION)),
-    ('generate_session_id', GEN_SESSION_CB),
-    ('verify_mode', c_int),
-    ('verify_depth', c_int),
-    ('verify_callback', CFUNCTYPE(c_int, c_int, POINTER(X509_STORE_CTX))),
-    ('info_callback', CFUNCTYPE(None, POINTER(SSL), c_int, c_int)),
-    ('error', c_int),
-    ('error_code', c_int),
-    ('ctx', POINTER(SSL_CTX)),
-    ('debug', c_int),
-    ('verify_result', c_long),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('client_CA', POINTER(STACK)),
-    ('references', c_int),
-    ('options', c_ulong),
-    ('mode', c_ulong),
-    ('max_cert_list', c_long),
-    ('first_packet', c_int),
-    ('client_version', c_int),
-]
-assert sizeof(ssl_st) == 268, sizeof(ssl_st)
-assert alignment(ssl_st) == 4, alignment(ssl_st)
-class N13ssl2_state_st4DOLLAR_19E(Structure):
-    pass
-N13ssl2_state_st4DOLLAR_19E._fields_ = [
-    ('conn_id_length', c_uint),
-    ('cert_type', c_uint),
-    ('cert_length', c_uint),
-    ('csl', c_uint),
-    ('clear', c_uint),
-    ('enc', c_uint),
-    ('ccl', c_ubyte * 32),
-    ('cipher_spec_length', c_uint),
-    ('session_id_length', c_uint),
-    ('clen', c_uint),
-    ('rlen', c_uint),
-]
-assert sizeof(N13ssl2_state_st4DOLLAR_19E) == 72, sizeof(N13ssl2_state_st4DOLLAR_19E)
-assert alignment(N13ssl2_state_st4DOLLAR_19E) == 4, alignment(N13ssl2_state_st4DOLLAR_19E)
-ssl2_state_st._fields_ = [
-    ('three_byte_header', c_int),
-    ('clear_text', c_int),
-    ('escape', c_int),
-    ('ssl2_rollback', c_int),
-    ('wnum', c_uint),
-    ('wpend_tot', c_int),
-    ('wpend_buf', POINTER(c_ubyte)),
-    ('wpend_off', c_int),
-    ('wpend_len', c_int),
-    ('wpend_ret', c_int),
-    ('rbuf_left', c_int),
-    ('rbuf_offs', c_int),
-    ('rbuf', POINTER(c_ubyte)),
-    ('wbuf', POINTER(c_ubyte)),
-    ('write_ptr', POINTER(c_ubyte)),
-    ('padding', c_uint),
-    ('rlength', c_uint),
-    ('ract_data_length', c_int),
-    ('wlength', c_uint),
-    ('wact_data_length', c_int),
-    ('ract_data', POINTER(c_ubyte)),
-    ('wact_data', POINTER(c_ubyte)),
-    ('mac_data', POINTER(c_ubyte)),
-    ('read_key', POINTER(c_ubyte)),
-    ('write_key', POINTER(c_ubyte)),
-    ('challenge_length', c_uint),
-    ('challenge', c_ubyte * 32),
-    ('conn_id_length', c_uint),
-    ('conn_id', c_ubyte * 16),
-    ('key_material_length', c_uint),
-    ('key_material', c_ubyte * 48),
-    ('read_sequence', c_ulong),
-    ('write_sequence', c_ulong),
-    ('tmp', N13ssl2_state_st4DOLLAR_19E),
-]
-assert sizeof(ssl2_state_st) == 288, sizeof(ssl2_state_st)
-assert alignment(ssl2_state_st) == 4, alignment(ssl2_state_st)
-SSL2_STATE = ssl2_state_st
-class ssl3_record_st(Structure):
-    pass
-ssl3_record_st._fields_ = [
-    ('type', c_int),
-    ('length', c_uint),
-    ('off', c_uint),
-    ('data', POINTER(c_ubyte)),
-    ('input', POINTER(c_ubyte)),
-    ('comp', POINTER(c_ubyte)),
-]
-assert sizeof(ssl3_record_st) == 24, sizeof(ssl3_record_st)
-assert alignment(ssl3_record_st) == 4, alignment(ssl3_record_st)
-SSL3_RECORD = ssl3_record_st
-class ssl3_buffer_st(Structure):
-    pass
-size_t = __darwin_size_t
-ssl3_buffer_st._fields_ = [
-    ('buf', POINTER(c_ubyte)),
-    ('len', size_t),
-    ('offset', c_int),
-    ('left', c_int),
-]
-assert sizeof(ssl3_buffer_st) == 16, sizeof(ssl3_buffer_st)
-assert alignment(ssl3_buffer_st) == 4, alignment(ssl3_buffer_st)
-SSL3_BUFFER = ssl3_buffer_st
-class N13ssl3_state_st4DOLLAR_20E(Structure):
-    pass
-N13ssl3_state_st4DOLLAR_20E._fields_ = [
-    ('cert_verify_md', c_ubyte * 72),
-    ('finish_md', c_ubyte * 72),
-    ('finish_md_len', c_int),
-    ('peer_finish_md', c_ubyte * 72),
-    ('peer_finish_md_len', c_int),
-    ('message_size', c_ulong),
-    ('message_type', c_int),
-    ('new_cipher', POINTER(SSL_CIPHER)),
-    ('dh', POINTER(DH)),
-    ('next_state', c_int),
-    ('reuse_message', c_int),
-    ('cert_req', c_int),
-    ('ctype_num', c_int),
-    ('ctype', c_char * 7),
-    ('ca_names', POINTER(STACK)),
-    ('use_rsa_tmp', c_int),
-    ('key_block_length', c_int),
-    ('key_block', POINTER(c_ubyte)),
-    ('new_sym_enc', POINTER(EVP_CIPHER)),
-    ('new_hash', POINTER(EVP_MD)),
-    ('new_compression', POINTER(SSL_COMP)),
-    ('cert_request', c_int),
-]
-assert sizeof(N13ssl3_state_st4DOLLAR_20E) == 296, sizeof(N13ssl3_state_st4DOLLAR_20E)
-assert alignment(N13ssl3_state_st4DOLLAR_20E) == 4, alignment(N13ssl3_state_st4DOLLAR_20E)
-ssl3_state_st._fields_ = [
-    ('flags', c_long),
-    ('delay_buf_pop_ret', c_int),
-    ('read_sequence', c_ubyte * 8),
-    ('read_mac_secret', c_ubyte * 36),
-    ('write_sequence', c_ubyte * 8),
-    ('write_mac_secret', c_ubyte * 36),
-    ('server_random', c_ubyte * 32),
-    ('client_random', c_ubyte * 32),
-    ('need_empty_fragments', c_int),
-    ('empty_fragment_done', c_int),
-    ('rbuf', SSL3_BUFFER),
-    ('wbuf', SSL3_BUFFER),
-    ('rrec', SSL3_RECORD),
-    ('wrec', SSL3_RECORD),
-    ('alert_fragment', c_ubyte * 2),
-    ('alert_fragment_len', c_uint),
-    ('handshake_fragment', c_ubyte * 4),
-    ('handshake_fragment_len', c_uint),
-    ('wnum', c_uint),
-    ('wpend_tot', c_int),
-    ('wpend_type', c_int),
-    ('wpend_ret', c_int),
-    ('wpend_buf', POINTER(c_ubyte)),
-    ('finish_dgst1', EVP_MD_CTX),
-    ('finish_dgst2', EVP_MD_CTX),
-    ('change_cipher_spec', c_int),
-    ('warn_alert', c_int),
-    ('fatal_alert', c_int),
-    ('alert_dispatch', c_int),
-    ('send_alert', c_ubyte * 2),
-    ('renegotiate', c_int),
-    ('total_renegotiations', c_int),
-    ('num_renegotiations', c_int),
-    ('in_read_app_data', c_int),
-    ('tmp', N13ssl3_state_st4DOLLAR_20E),
-]
-assert sizeof(ssl3_state_st) == 648, sizeof(ssl3_state_st)
-assert alignment(ssl3_state_st) == 4, alignment(ssl3_state_st)
-SSL3_STATE = ssl3_state_st
-stack_st._fields_ = [
-    ('num', c_int),
-    ('data', POINTER(STRING)),
-    ('sorted', c_int),
-    ('num_alloc', c_int),
-    ('comp', CFUNCTYPE(c_int, POINTER(STRING), POINTER(STRING))),
-]
-assert sizeof(stack_st) == 20, sizeof(stack_st)
-assert alignment(stack_st) == 4, alignment(stack_st)
-class ui_st(Structure):
-    pass
-ui_st._fields_ = [
-]
-UI = ui_st
-class ui_method_st(Structure):
-    pass
-ui_method_st._fields_ = [
-]
-UI_METHOD = ui_method_st
-class ui_string_st(Structure):
-    pass
-ui_string_st._fields_ = [
-]
-UI_STRING = ui_string_st
-
-# values for enumeration 'UI_string_types'
-UI_string_types = c_int # enum
-class X509_objects_st(Structure):
-    pass
-X509_objects_st._fields_ = [
-    ('nid', c_int),
-    ('a2i', CFUNCTYPE(c_int)),
-    ('i2a', CFUNCTYPE(c_int)),
-]
-assert sizeof(X509_objects_st) == 12, sizeof(X509_objects_st)
-assert alignment(X509_objects_st) == 4, alignment(X509_objects_st)
-X509_OBJECTS = X509_objects_st
-X509_algor_st._fields_ = [
-    ('algorithm', POINTER(ASN1_OBJECT)),
-    ('parameter', POINTER(ASN1_TYPE)),
-]
-assert sizeof(X509_algor_st) == 8, sizeof(X509_algor_st)
-assert alignment(X509_algor_st) == 4, alignment(X509_algor_st)
-class X509_val_st(Structure):
-    pass
-X509_val_st._fields_ = [
-    ('notBefore', POINTER(ASN1_TIME)),
-    ('notAfter', POINTER(ASN1_TIME)),
-]
-assert sizeof(X509_val_st) == 8, sizeof(X509_val_st)
-assert alignment(X509_val_st) == 4, alignment(X509_val_st)
-X509_VAL = X509_val_st
-class X509_pubkey_st(Structure):
-    pass
-X509_pubkey_st._fields_ = [
-    ('algor', POINTER(X509_ALGOR)),
-    ('public_key', POINTER(ASN1_BIT_STRING)),
-    ('pkey', POINTER(EVP_PKEY)),
-]
-assert sizeof(X509_pubkey_st) == 12, sizeof(X509_pubkey_st)
-assert alignment(X509_pubkey_st) == 4, alignment(X509_pubkey_st)
-X509_PUBKEY = X509_pubkey_st
-class X509_sig_st(Structure):
-    pass
-X509_sig_st._fields_ = [
-    ('algor', POINTER(X509_ALGOR)),
-    ('digest', POINTER(ASN1_OCTET_STRING)),
-]
-assert sizeof(X509_sig_st) == 8, sizeof(X509_sig_st)
-assert alignment(X509_sig_st) == 4, alignment(X509_sig_st)
-X509_SIG = X509_sig_st
-class X509_name_entry_st(Structure):
-    pass
-X509_name_entry_st._fields_ = [
-    ('object', POINTER(ASN1_OBJECT)),
-    ('value', POINTER(ASN1_STRING)),
-    ('set', c_int),
-    ('size', c_int),
-]
-assert sizeof(X509_name_entry_st) == 16, sizeof(X509_name_entry_st)
-assert alignment(X509_name_entry_st) == 4, alignment(X509_name_entry_st)
-X509_NAME_ENTRY = X509_name_entry_st
-X509_name_st._fields_ = [
-    ('entries', POINTER(STACK)),
-    ('modified', c_int),
-    ('bytes', POINTER(BUF_MEM)),
-    ('hash', c_ulong),
-]
-assert sizeof(X509_name_st) == 16, sizeof(X509_name_st)
-assert alignment(X509_name_st) == 4, alignment(X509_name_st)
-class X509_extension_st(Structure):
-    pass
-X509_extension_st._fields_ = [
-    ('object', POINTER(ASN1_OBJECT)),
-    ('critical', ASN1_BOOLEAN),
-    ('value', POINTER(ASN1_OCTET_STRING)),
-]
-assert sizeof(X509_extension_st) == 12, sizeof(X509_extension_st)
-assert alignment(X509_extension_st) == 4, alignment(X509_extension_st)
-X509_EXTENSION = X509_extension_st
-class x509_attributes_st(Structure):
-    pass
-class N18x509_attributes_st4DOLLAR_13E(Union):
-    pass
-N18x509_attributes_st4DOLLAR_13E._fields_ = [
-    ('ptr', STRING),
-    ('set', POINTER(STACK)),
-    ('single', POINTER(ASN1_TYPE)),
-]
-assert sizeof(N18x509_attributes_st4DOLLAR_13E) == 4, sizeof(N18x509_attributes_st4DOLLAR_13E)
-assert alignment(N18x509_attributes_st4DOLLAR_13E) == 4, alignment(N18x509_attributes_st4DOLLAR_13E)
-x509_attributes_st._fields_ = [
-    ('object', POINTER(ASN1_OBJECT)),
-    ('single', c_int),
-    ('value', N18x509_attributes_st4DOLLAR_13E),
-]
-assert sizeof(x509_attributes_st) == 12, sizeof(x509_attributes_st)
-assert alignment(x509_attributes_st) == 4, alignment(x509_attributes_st)
-X509_ATTRIBUTE = x509_attributes_st
-class X509_req_info_st(Structure):
-    pass
-X509_req_info_st._fields_ = [
-    ('enc', ASN1_ENCODING),
-    ('version', POINTER(ASN1_INTEGER)),
-    ('subject', POINTER(X509_NAME)),
-    ('pubkey', POINTER(X509_PUBKEY)),
-    ('attributes', POINTER(STACK)),
-]
-assert sizeof(X509_req_info_st) == 28, sizeof(X509_req_info_st)
-assert alignment(X509_req_info_st) == 4, alignment(X509_req_info_st)
-X509_REQ_INFO = X509_req_info_st
-class X509_req_st(Structure):
-    pass
-X509_req_st._fields_ = [
-    ('req_info', POINTER(X509_REQ_INFO)),
-    ('sig_alg', POINTER(X509_ALGOR)),
-    ('signature', POINTER(ASN1_BIT_STRING)),
-    ('references', c_int),
-]
-assert sizeof(X509_req_st) == 16, sizeof(X509_req_st)
-assert alignment(X509_req_st) == 4, alignment(X509_req_st)
-X509_REQ = X509_req_st
-class x509_cinf_st(Structure):
-    pass
-x509_cinf_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('serialNumber', POINTER(ASN1_INTEGER)),
-    ('signature', POINTER(X509_ALGOR)),
-    ('issuer', POINTER(X509_NAME)),
-    ('validity', POINTER(X509_VAL)),
-    ('subject', POINTER(X509_NAME)),
-    ('key', POINTER(X509_PUBKEY)),
-    ('issuerUID', POINTER(ASN1_BIT_STRING)),
-    ('subjectUID', POINTER(ASN1_BIT_STRING)),
-    ('extensions', POINTER(STACK)),
-]
-assert sizeof(x509_cinf_st) == 40, sizeof(x509_cinf_st)
-assert alignment(x509_cinf_st) == 4, alignment(x509_cinf_st)
-X509_CINF = x509_cinf_st
-class x509_cert_aux_st(Structure):
-    pass
-x509_cert_aux_st._fields_ = [
-    ('trust', POINTER(STACK)),
-    ('reject', POINTER(STACK)),
-    ('alias', POINTER(ASN1_UTF8STRING)),
-    ('keyid', POINTER(ASN1_OCTET_STRING)),
-    ('other', POINTER(STACK)),
-]
-assert sizeof(x509_cert_aux_st) == 20, sizeof(x509_cert_aux_st)
-assert alignment(x509_cert_aux_st) == 4, alignment(x509_cert_aux_st)
-X509_CERT_AUX = x509_cert_aux_st
-class AUTHORITY_KEYID_st(Structure):
-    pass
-x509_st._fields_ = [
-    ('cert_info', POINTER(X509_CINF)),
-    ('sig_alg', POINTER(X509_ALGOR)),
-    ('signature', POINTER(ASN1_BIT_STRING)),
-    ('valid', c_int),
-    ('references', c_int),
-    ('name', STRING),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('ex_pathlen', c_long),
-    ('ex_flags', c_ulong),
-    ('ex_kusage', c_ulong),
-    ('ex_xkusage', c_ulong),
-    ('ex_nscert', c_ulong),
-    ('skid', POINTER(ASN1_OCTET_STRING)),
-    ('akid', POINTER(AUTHORITY_KEYID_st)),
-    ('sha1_hash', c_ubyte * 20),
-    ('aux', POINTER(X509_CERT_AUX)),
-]
-assert sizeof(x509_st) == 84, sizeof(x509_st)
-assert alignment(x509_st) == 4, alignment(x509_st)
-AUTHORITY_KEYID_st._fields_ = [
-]
-class x509_trust_st(Structure):
-    pass
-x509_trust_st._fields_ = [
-    ('trust', c_int),
-    ('flags', c_int),
-    ('check_trust', CFUNCTYPE(c_int, POINTER(x509_trust_st), POINTER(X509), c_int)),
-    ('name', STRING),
-    ('arg1', c_int),
-    ('arg2', c_void_p),
-]
-assert sizeof(x509_trust_st) == 24, sizeof(x509_trust_st)
-assert alignment(x509_trust_st) == 4, alignment(x509_trust_st)
-X509_TRUST = x509_trust_st
-class X509_revoked_st(Structure):
-    pass
-X509_revoked_st._fields_ = [
-    ('serialNumber', POINTER(ASN1_INTEGER)),
-    ('revocationDate', POINTER(ASN1_TIME)),
-    ('extensions', POINTER(STACK)),
-    ('sequence', c_int),
-]
-assert sizeof(X509_revoked_st) == 16, sizeof(X509_revoked_st)
-assert alignment(X509_revoked_st) == 4, alignment(X509_revoked_st)
-X509_REVOKED = X509_revoked_st
-class X509_crl_info_st(Structure):
-    pass
-X509_crl_info_st._fields_ = [
-    ('version', POINTER(ASN1_INTEGER)),
-    ('sig_alg', POINTER(X509_ALGOR)),
-    ('issuer', POINTER(X509_NAME)),
-    ('lastUpdate', POINTER(ASN1_TIME)),
-    ('nextUpdate', POINTER(ASN1_TIME)),
-    ('revoked', POINTER(STACK)),
-    ('extensions', POINTER(STACK)),
-    ('enc', ASN1_ENCODING),
-]
-assert sizeof(X509_crl_info_st) == 40, sizeof(X509_crl_info_st)
-assert alignment(X509_crl_info_st) == 4, alignment(X509_crl_info_st)
-X509_CRL_INFO = X509_crl_info_st
-X509_crl_st._fields_ = [
-    ('crl', POINTER(X509_CRL_INFO)),
-    ('sig_alg', POINTER(X509_ALGOR)),
-    ('signature', POINTER(ASN1_BIT_STRING)),
-    ('references', c_int),
-]
-assert sizeof(X509_crl_st) == 16, sizeof(X509_crl_st)
-assert alignment(X509_crl_st) == 4, alignment(X509_crl_st)
-class private_key_st(Structure):
-    pass
-private_key_st._fields_ = [
-    ('version', c_int),
-    ('enc_algor', POINTER(X509_ALGOR)),
-    ('enc_pkey', POINTER(ASN1_OCTET_STRING)),
-    ('dec_pkey', POINTER(EVP_PKEY)),
-    ('key_length', c_int),
-    ('key_data', STRING),
-    ('key_free', c_int),
-    ('cipher', EVP_CIPHER_INFO),
-    ('references', c_int),
-]
-assert sizeof(private_key_st) == 52, sizeof(private_key_st)
-assert alignment(private_key_st) == 4, alignment(private_key_st)
-X509_PKEY = private_key_st
-class X509_info_st(Structure):
-    pass
-X509_info_st._fields_ = [
-    ('x509', POINTER(X509)),
-    ('crl', POINTER(X509_CRL)),
-    ('x_pkey', POINTER(X509_PKEY)),
-    ('enc_cipher', EVP_CIPHER_INFO),
-    ('enc_len', c_int),
-    ('enc_data', STRING),
-    ('references', c_int),
-]
-assert sizeof(X509_info_st) == 44, sizeof(X509_info_st)
-assert alignment(X509_info_st) == 4, alignment(X509_info_st)
-X509_INFO = X509_info_st
-class Netscape_spkac_st(Structure):
-    pass
-Netscape_spkac_st._fields_ = [
-    ('pubkey', POINTER(X509_PUBKEY)),
-    ('challenge', POINTER(ASN1_IA5STRING)),
-]
-assert sizeof(Netscape_spkac_st) == 8, sizeof(Netscape_spkac_st)
-assert alignment(Netscape_spkac_st) == 4, alignment(Netscape_spkac_st)
-NETSCAPE_SPKAC = Netscape_spkac_st
-class Netscape_spki_st(Structure):
-    pass
-Netscape_spki_st._fields_ = [
-    ('spkac', POINTER(NETSCAPE_SPKAC)),
-    ('sig_algor', POINTER(X509_ALGOR)),
-    ('signature', POINTER(ASN1_BIT_STRING)),
-]
-assert sizeof(Netscape_spki_st) == 12, sizeof(Netscape_spki_st)
-assert alignment(Netscape_spki_st) == 4, alignment(Netscape_spki_st)
-NETSCAPE_SPKI = Netscape_spki_st
-class Netscape_certificate_sequence(Structure):
-    pass
-Netscape_certificate_sequence._fields_ = [
-    ('type', POINTER(ASN1_OBJECT)),
-    ('certs', POINTER(STACK)),
-]
-assert sizeof(Netscape_certificate_sequence) == 8, sizeof(Netscape_certificate_sequence)
-assert alignment(Netscape_certificate_sequence) == 4, alignment(Netscape_certificate_sequence)
-NETSCAPE_CERT_SEQUENCE = Netscape_certificate_sequence
-class PBEPARAM_st(Structure):
-    pass
-PBEPARAM_st._fields_ = [
-    ('salt', POINTER(ASN1_OCTET_STRING)),
-    ('iter', POINTER(ASN1_INTEGER)),
-]
-assert sizeof(PBEPARAM_st) == 8, sizeof(PBEPARAM_st)
-assert alignment(PBEPARAM_st) == 4, alignment(PBEPARAM_st)
-PBEPARAM = PBEPARAM_st
-class PBE2PARAM_st(Structure):
-    pass
-PBE2PARAM_st._fields_ = [
-    ('keyfunc', POINTER(X509_ALGOR)),
-    ('encryption', POINTER(X509_ALGOR)),
-]
-assert sizeof(PBE2PARAM_st) == 8, sizeof(PBE2PARAM_st)
-assert alignment(PBE2PARAM_st) == 4, alignment(PBE2PARAM_st)
-PBE2PARAM = PBE2PARAM_st
-class PBKDF2PARAM_st(Structure):
-    pass
-PBKDF2PARAM_st._fields_ = [
-    ('salt', POINTER(ASN1_TYPE)),
-    ('iter', POINTER(ASN1_INTEGER)),
-    ('keylength', POINTER(ASN1_INTEGER)),
-    ('prf', POINTER(X509_ALGOR)),
-]
-assert sizeof(PBKDF2PARAM_st) == 16, sizeof(PBKDF2PARAM_st)
-assert alignment(PBKDF2PARAM_st) == 4, alignment(PBKDF2PARAM_st)
-PBKDF2PARAM = PBKDF2PARAM_st
-class pkcs8_priv_key_info_st(Structure):
-    pass
-pkcs8_priv_key_info_st._fields_ = [
-    ('broken', c_int),
-    ('version', POINTER(ASN1_INTEGER)),
-    ('pkeyalg', POINTER(X509_ALGOR)),
-    ('pkey', POINTER(ASN1_TYPE)),
-    ('attributes', POINTER(STACK)),
-]
-assert sizeof(pkcs8_priv_key_info_st) == 20, sizeof(pkcs8_priv_key_info_st)
-assert alignment(pkcs8_priv_key_info_st) == 4, alignment(pkcs8_priv_key_info_st)
-PKCS8_PRIV_KEY_INFO = pkcs8_priv_key_info_st
-class x509_hash_dir_st(Structure):
-    pass
-x509_hash_dir_st._fields_ = [
-    ('num_dirs', c_int),
-    ('dirs', POINTER(STRING)),
-    ('dirs_type', POINTER(c_int)),
-    ('num_dirs_alloced', c_int),
-]
-assert sizeof(x509_hash_dir_st) == 16, sizeof(x509_hash_dir_st)
-assert alignment(x509_hash_dir_st) == 4, alignment(x509_hash_dir_st)
-X509_HASH_DIR_CTX = x509_hash_dir_st
-class x509_file_st(Structure):
-    pass
-x509_file_st._fields_ = [
-    ('num_paths', c_int),
-    ('num_alloced', c_int),
-    ('paths', POINTER(STRING)),
-    ('path_type', POINTER(c_int)),
-]
-assert sizeof(x509_file_st) == 16, sizeof(x509_file_st)
-assert alignment(x509_file_st) == 4, alignment(x509_file_st)
-X509_CERT_FILE_CTX = x509_file_st
-class x509_object_st(Structure):
-    pass
-class N14x509_object_st4DOLLAR_14E(Union):
-    pass
-N14x509_object_st4DOLLAR_14E._fields_ = [
-    ('ptr', STRING),
-    ('x509', POINTER(X509)),
-    ('crl', POINTER(X509_CRL)),
-    ('pkey', POINTER(EVP_PKEY)),
-]
-assert sizeof(N14x509_object_st4DOLLAR_14E) == 4, sizeof(N14x509_object_st4DOLLAR_14E)
-assert alignment(N14x509_object_st4DOLLAR_14E) == 4, alignment(N14x509_object_st4DOLLAR_14E)
-x509_object_st._fields_ = [
-    ('type', c_int),
-    ('data', N14x509_object_st4DOLLAR_14E),
-]
-assert sizeof(x509_object_st) == 8, sizeof(x509_object_st)
-assert alignment(x509_object_st) == 4, alignment(x509_object_st)
-X509_OBJECT = x509_object_st
-class x509_lookup_st(Structure):
-    pass
-X509_LOOKUP = x509_lookup_st
-class x509_lookup_method_st(Structure):
-    pass
-x509_lookup_method_st._fields_ = [
-    ('name', STRING),
-    ('new_item', CFUNCTYPE(c_int, POINTER(X509_LOOKUP))),
-    ('free', CFUNCTYPE(None, POINTER(X509_LOOKUP))),
-    ('init', CFUNCTYPE(c_int, POINTER(X509_LOOKUP))),
-    ('shutdown', CFUNCTYPE(c_int, POINTER(X509_LOOKUP))),
-    ('ctrl', CFUNCTYPE(c_int, POINTER(X509_LOOKUP), c_int, STRING, c_long, POINTER(STRING))),
-    ('get_by_subject', CFUNCTYPE(c_int, POINTER(X509_LOOKUP), c_int, POINTER(X509_NAME), POINTER(X509_OBJECT))),
-    ('get_by_issuer_serial', CFUNCTYPE(c_int, POINTER(X509_LOOKUP), c_int, POINTER(X509_NAME), POINTER(ASN1_INTEGER), POINTER(X509_OBJECT))),
-    ('get_by_fingerprint', CFUNCTYPE(c_int, POINTER(X509_LOOKUP), c_int, POINTER(c_ubyte), c_int, POINTER(X509_OBJECT))),
-    ('get_by_alias', CFUNCTYPE(c_int, POINTER(X509_LOOKUP), c_int, STRING, c_int, POINTER(X509_OBJECT))),
-]
-assert sizeof(x509_lookup_method_st) == 40, sizeof(x509_lookup_method_st)
-assert alignment(x509_lookup_method_st) == 4, alignment(x509_lookup_method_st)
-X509_LOOKUP_METHOD = x509_lookup_method_st
-x509_store_st._fields_ = [
-    ('cache', c_int),
-    ('objs', POINTER(STACK)),
-    ('get_cert_methods', POINTER(STACK)),
-    ('flags', c_ulong),
-    ('purpose', c_int),
-    ('trust', c_int),
-    ('verify', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX))),
-    ('verify_cb', CFUNCTYPE(c_int, c_int, POINTER(X509_STORE_CTX))),
-    ('get_issuer', CFUNCTYPE(c_int, POINTER(POINTER(X509)), POINTER(X509_STORE_CTX), POINTER(X509))),
-    ('check_issued', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(X509), POINTER(X509))),
-    ('check_revocation', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX))),
-    ('get_crl', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(POINTER(X509_CRL)), POINTER(X509))),
-    ('check_crl', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(X509_CRL))),
-    ('cert_crl', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(X509_CRL), POINTER(X509))),
-    ('cleanup', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX))),
-    ('ex_data', CRYPTO_EX_DATA),
-    ('references', c_int),
-    ('depth', c_int),
-]
-assert sizeof(x509_store_st) == 76, sizeof(x509_store_st)
-assert alignment(x509_store_st) == 4, alignment(x509_store_st)
-x509_lookup_st._fields_ = [
-    ('init', c_int),
-    ('skip', c_int),
-    ('method', POINTER(X509_LOOKUP_METHOD)),
-    ('method_data', STRING),
-    ('store_ctx', POINTER(X509_STORE)),
-]
-assert sizeof(x509_lookup_st) == 20, sizeof(x509_lookup_st)
-assert alignment(x509_lookup_st) == 4, alignment(x509_lookup_st)
-time_t = __darwin_time_t
-x509_store_ctx_st._fields_ = [
-    ('ctx', POINTER(X509_STORE)),
-    ('current_method', c_int),
-    ('cert', POINTER(X509)),
-    ('untrusted', POINTER(STACK)),
-    ('purpose', c_int),
-    ('trust', c_int),
-    ('check_time', time_t),
-    ('flags', c_ulong),
-    ('other_ctx', c_void_p),
-    ('verify', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX))),
-    ('verify_cb', CFUNCTYPE(c_int, c_int, POINTER(X509_STORE_CTX))),
-    ('get_issuer', CFUNCTYPE(c_int, POINTER(POINTER(X509)), POINTER(X509_STORE_CTX), POINTER(X509))),
-    ('check_issued', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(X509), POINTER(X509))),
-    ('check_revocation', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX))),
-    ('get_crl', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(POINTER(X509_CRL)), POINTER(X509))),
-    ('check_crl', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(X509_CRL))),
-    ('cert_crl', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX), POINTER(X509_CRL), POINTER(X509))),
-    ('cleanup', CFUNCTYPE(c_int, POINTER(X509_STORE_CTX))),
-    ('depth', c_int),
-    ('valid', c_int),
-    ('last_untrusted', c_int),
-    ('chain', POINTER(STACK)),
-    ('error_depth', c_int),
-    ('error', c_int),
-    ('current_cert', POINTER(X509)),
-    ('current_issuer', POINTER(X509)),
-    ('current_crl', POINTER(X509_CRL)),
-    ('ex_data', CRYPTO_EX_DATA),
-]
-assert sizeof(x509_store_ctx_st) == 116, sizeof(x509_store_ctx_st)
-assert alignment(x509_store_ctx_st) == 4, alignment(x509_store_ctx_st)
-va_list = __darwin_va_list
-__darwin_off_t = __int64_t
-fpos_t = __darwin_off_t
-class __sbuf(Structure):
-    pass
-__sbuf._fields_ = [
-    ('_base', POINTER(c_ubyte)),
-    ('_size', c_int),
-]
-assert sizeof(__sbuf) == 8, sizeof(__sbuf)
-assert alignment(__sbuf) == 4, alignment(__sbuf)
-class __sFILEX(Structure):
-    pass
-__sFILEX._fields_ = [
-]
-class __sFILE(Structure):
-    pass
-__sFILE._pack_ = 4
-__sFILE._fields_ = [
-    ('_p', POINTER(c_ubyte)),
-    ('_r', c_int),
-    ('_w', c_int),
-    ('_flags', c_short),
-    ('_file', c_short),
-    ('_bf', __sbuf),
-    ('_lbfsize', c_int),
-    ('_cookie', c_void_p),
-    ('_close', CFUNCTYPE(c_int, c_void_p)),
-    ('_read', CFUNCTYPE(c_int, c_void_p, STRING, c_int)),
-    ('_seek', CFUNCTYPE(fpos_t, c_void_p, c_longlong, c_int)),
-    ('_write', CFUNCTYPE(c_int, c_void_p, STRING, c_int)),
-    ('_ub', __sbuf),
-    ('_extra', POINTER(__sFILEX)),
-    ('_ur', c_int),
-    ('_ubuf', c_ubyte * 3),
-    ('_nbuf', c_ubyte * 1),
-    ('_lb', __sbuf),
-    ('_blksize', c_int),
-    ('_offset', fpos_t),
-]
-assert sizeof(__sFILE) == 88, sizeof(__sFILE)
-assert alignment(__sFILE) == 4, alignment(__sFILE)
-FILE = __sFILE
-ct_rune_t = __darwin_ct_rune_t
-rune_t = __darwin_rune_t
-class div_t(Structure):
-    pass
-div_t._fields_ = [
-    ('quot', c_int),
-    ('rem', c_int),
-]
-assert sizeof(div_t) == 8, sizeof(div_t)
-assert alignment(div_t) == 4, alignment(div_t)
-class ldiv_t(Structure):
-    pass
-ldiv_t._fields_ = [
-    ('quot', c_long),
-    ('rem', c_long),
-]
-assert sizeof(ldiv_t) == 8, sizeof(ldiv_t)
-assert alignment(ldiv_t) == 4, alignment(ldiv_t)
-class lldiv_t(Structure):
-    pass
-lldiv_t._pack_ = 4
-lldiv_t._fields_ = [
-    ('quot', c_longlong),
-    ('rem', c_longlong),
-]
-assert sizeof(lldiv_t) == 16, sizeof(lldiv_t)
-assert alignment(lldiv_t) == 4, alignment(lldiv_t)
-__darwin_dev_t = __int32_t
-dev_t = __darwin_dev_t
-__darwin_mode_t = __uint16_t
-mode_t = __darwin_mode_t
-class mcontext(Structure):
-    pass
-mcontext._fields_ = [
-]
-class mcontext64(Structure):
-    pass
-mcontext64._fields_ = [
-]
-class __darwin_pthread_handler_rec(Structure):
-    pass
-__darwin_pthread_handler_rec._fields_ = [
-    ('__routine', CFUNCTYPE(None, c_void_p)),
-    ('__arg', c_void_p),
-    ('__next', POINTER(__darwin_pthread_handler_rec)),
-]
-assert sizeof(__darwin_pthread_handler_rec) == 12, sizeof(__darwin_pthread_handler_rec)
-assert alignment(__darwin_pthread_handler_rec) == 4, alignment(__darwin_pthread_handler_rec)
-class _opaque_pthread_attr_t(Structure):
-    pass
-_opaque_pthread_attr_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 36),
-]
-assert sizeof(_opaque_pthread_attr_t) == 40, sizeof(_opaque_pthread_attr_t)
-assert alignment(_opaque_pthread_attr_t) == 4, alignment(_opaque_pthread_attr_t)
-class _opaque_pthread_cond_t(Structure):
-    pass
-_opaque_pthread_cond_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 24),
-]
-assert sizeof(_opaque_pthread_cond_t) == 28, sizeof(_opaque_pthread_cond_t)
-assert alignment(_opaque_pthread_cond_t) == 4, alignment(_opaque_pthread_cond_t)
-class _opaque_pthread_condattr_t(Structure):
-    pass
-_opaque_pthread_condattr_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 4),
-]
-assert sizeof(_opaque_pthread_condattr_t) == 8, sizeof(_opaque_pthread_condattr_t)
-assert alignment(_opaque_pthread_condattr_t) == 4, alignment(_opaque_pthread_condattr_t)
-class _opaque_pthread_mutex_t(Structure):
-    pass
-_opaque_pthread_mutex_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 40),
-]
-assert sizeof(_opaque_pthread_mutex_t) == 44, sizeof(_opaque_pthread_mutex_t)
-assert alignment(_opaque_pthread_mutex_t) == 4, alignment(_opaque_pthread_mutex_t)
-class _opaque_pthread_mutexattr_t(Structure):
-    pass
-_opaque_pthread_mutexattr_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 8),
-]
-assert sizeof(_opaque_pthread_mutexattr_t) == 12, sizeof(_opaque_pthread_mutexattr_t)
-assert alignment(_opaque_pthread_mutexattr_t) == 4, alignment(_opaque_pthread_mutexattr_t)
-class _opaque_pthread_once_t(Structure):
-    pass
-_opaque_pthread_once_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 4),
-]
-assert sizeof(_opaque_pthread_once_t) == 8, sizeof(_opaque_pthread_once_t)
-assert alignment(_opaque_pthread_once_t) == 4, alignment(_opaque_pthread_once_t)
-class _opaque_pthread_rwlock_t(Structure):
-    pass
-_opaque_pthread_rwlock_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 124),
-]
-assert sizeof(_opaque_pthread_rwlock_t) == 128, sizeof(_opaque_pthread_rwlock_t)
-assert alignment(_opaque_pthread_rwlock_t) == 4, alignment(_opaque_pthread_rwlock_t)
-class _opaque_pthread_rwlockattr_t(Structure):
-    pass
-_opaque_pthread_rwlockattr_t._fields_ = [
-    ('__sig', c_long),
-    ('__opaque', c_char * 12),
-]
-assert sizeof(_opaque_pthread_rwlockattr_t) == 16, sizeof(_opaque_pthread_rwlockattr_t)
-assert alignment(_opaque_pthread_rwlockattr_t) == 4, alignment(_opaque_pthread_rwlockattr_t)
-class _opaque_pthread_t(Structure):
-    pass
-_opaque_pthread_t._fields_ = [
-    ('__sig', c_long),
-    ('__cleanup_stack', POINTER(__darwin_pthread_handler_rec)),
-    ('__opaque', c_char * 596),
-]
-assert sizeof(_opaque_pthread_t) == 604, sizeof(_opaque_pthread_t)
-assert alignment(_opaque_pthread_t) == 4, alignment(_opaque_pthread_t)
-__darwin_blkcnt_t = __int64_t
-__darwin_blksize_t = __int32_t
-__darwin_fsblkcnt_t = c_uint
-__darwin_fsfilcnt_t = c_uint
-__darwin_gid_t = __uint32_t
-__darwin_id_t = __uint32_t
-__darwin_ino_t = __uint32_t
-__darwin_mach_port_name_t = __darwin_natural_t
-__darwin_mach_port_t = __darwin_mach_port_name_t
-__darwin_mcontext_t = POINTER(mcontext)
-__darwin_mcontext64_t = POINTER(mcontext64)
-__darwin_pid_t = __int32_t
-__darwin_pthread_attr_t = _opaque_pthread_attr_t
-__darwin_pthread_cond_t = _opaque_pthread_cond_t
-__darwin_pthread_condattr_t = _opaque_pthread_condattr_t
-__darwin_pthread_key_t = c_ulong
-__darwin_pthread_mutex_t = _opaque_pthread_mutex_t
-__darwin_pthread_mutexattr_t = _opaque_pthread_mutexattr_t
-__darwin_pthread_once_t = _opaque_pthread_once_t
-__darwin_pthread_rwlock_t = _opaque_pthread_rwlock_t
-__darwin_pthread_rwlockattr_t = _opaque_pthread_rwlockattr_t
-__darwin_pthread_t = POINTER(_opaque_pthread_t)
-__darwin_sigset_t = __uint32_t
-__darwin_suseconds_t = __int32_t
-__darwin_uid_t = __uint32_t
-__darwin_useconds_t = __uint32_t
-__darwin_uuid_t = c_ubyte * 16
-class sigaltstack(Structure):
-    pass
-sigaltstack._fields_ = [
-    ('ss_sp', c_void_p),
-    ('ss_size', __darwin_size_t),
-    ('ss_flags', c_int),
-]
-assert sizeof(sigaltstack) == 12, sizeof(sigaltstack)
-assert alignment(sigaltstack) == 4, alignment(sigaltstack)
-__darwin_stack_t = sigaltstack
-class ucontext(Structure):
-    pass
-ucontext._fields_ = [
-    ('uc_onstack', c_int),
-    ('uc_sigmask', __darwin_sigset_t),
-    ('uc_stack', __darwin_stack_t),
-    ('uc_link', POINTER(ucontext)),
-    ('uc_mcsize', __darwin_size_t),
-    ('uc_mcontext', __darwin_mcontext_t),
-]
-assert sizeof(ucontext) == 32, sizeof(ucontext)
-assert alignment(ucontext) == 4, alignment(ucontext)
-__darwin_ucontext_t = ucontext
-class ucontext64(Structure):
-    pass
-ucontext64._fields_ = [
-    ('uc_onstack', c_int),
-    ('uc_sigmask', __darwin_sigset_t),
-    ('uc_stack', __darwin_stack_t),
-    ('uc_link', POINTER(ucontext64)),
-    ('uc_mcsize', __darwin_size_t),
-    ('uc_mcontext64', __darwin_mcontext64_t),
-]
-assert sizeof(ucontext64) == 32, sizeof(ucontext64)
-assert alignment(ucontext64) == 4, alignment(ucontext64)
-__darwin_ucontext64_t = ucontext64
-class timeval(Structure):
-    pass
-timeval._fields_ = [
-    ('tv_sec', __darwin_time_t),
-    ('tv_usec', __darwin_suseconds_t),
-]
-assert sizeof(timeval) == 8, sizeof(timeval)
-assert alignment(timeval) == 4, alignment(timeval)
-rlim_t = __int64_t
-class rusage(Structure):
-    pass
-rusage._fields_ = [
-    ('ru_utime', timeval),
-    ('ru_stime', timeval),
-    ('ru_maxrss', c_long),
-    ('ru_ixrss', c_long),
-    ('ru_idrss', c_long),
-    ('ru_isrss', c_long),
-    ('ru_minflt', c_long),
-    ('ru_majflt', c_long),
-    ('ru_nswap', c_long),
-    ('ru_inblock', c_long),
-    ('ru_oublock', c_long),
-    ('ru_msgsnd', c_long),
-    ('ru_msgrcv', c_long),
-    ('ru_nsignals', c_long),
-    ('ru_nvcsw', c_long),
-    ('ru_nivcsw', c_long),
-]
-assert sizeof(rusage) == 72, sizeof(rusage)
-assert alignment(rusage) == 4, alignment(rusage)
-class rlimit(Structure):
-    pass
-rlimit._pack_ = 4
-rlimit._fields_ = [
-    ('rlim_cur', rlim_t),
-    ('rlim_max', rlim_t),
-]
-assert sizeof(rlimit) == 16, sizeof(rlimit)
-assert alignment(rlimit) == 4, alignment(rlimit)
-mcontext_t = __darwin_mcontext_t
-mcontext64_t = __darwin_mcontext64_t
-pthread_attr_t = __darwin_pthread_attr_t
-sigset_t = __darwin_sigset_t
-ucontext_t = __darwin_ucontext_t
-ucontext64_t = __darwin_ucontext64_t
-uid_t = __darwin_uid_t
-class sigval(Union):
-    pass
-sigval._fields_ = [
-    ('sival_int', c_int),
-    ('sival_ptr', c_void_p),
-]
-assert sizeof(sigval) == 4, sizeof(sigval)
-assert alignment(sigval) == 4, alignment(sigval)
-class sigevent(Structure):
-    pass
-sigevent._fields_ = [
-    ('sigev_notify', c_int),
-    ('sigev_signo', c_int),
-    ('sigev_value', sigval),
-    ('sigev_notify_function', CFUNCTYPE(None, sigval)),
-    ('sigev_notify_attributes', POINTER(pthread_attr_t)),
-]
-assert sizeof(sigevent) == 20, sizeof(sigevent)
-assert alignment(sigevent) == 4, alignment(sigevent)
-class __siginfo(Structure):
-    pass
-pid_t = __darwin_pid_t
-__siginfo._fields_ = [
-    ('si_signo', c_int),
-    ('si_errno', c_int),
-    ('si_code', c_int),
-    ('si_pid', pid_t),
-    ('si_uid', uid_t),
-    ('si_status', c_int),
-    ('si_addr', c_void_p),
-    ('si_value', sigval),
-    ('si_band', c_long),
-    ('pad', c_ulong * 7),
-]
-assert sizeof(__siginfo) == 64, sizeof(__siginfo)
-assert alignment(__siginfo) == 4, alignment(__siginfo)
-siginfo_t = __siginfo
-class __sigaction_u(Union):
-    pass
-__sigaction_u._fields_ = [
-    ('__sa_handler', CFUNCTYPE(None, c_int)),
-    ('__sa_sigaction', CFUNCTYPE(None, c_int, POINTER(__siginfo), c_void_p)),
-]
-assert sizeof(__sigaction_u) == 4, sizeof(__sigaction_u)
-assert alignment(__sigaction_u) == 4, alignment(__sigaction_u)
-class __sigaction(Structure):
-    pass
-__sigaction._fields_ = [
-    ('__sigaction_u', __sigaction_u),
-    ('sa_tramp', CFUNCTYPE(None, c_void_p, c_int, c_int, POINTER(siginfo_t), c_void_p)),
-    ('sa_mask', sigset_t),
-    ('sa_flags', c_int),
-]
-assert sizeof(__sigaction) == 16, sizeof(__sigaction)
-assert alignment(__sigaction) == 4, alignment(__sigaction)
-class sigaction(Structure):
-    pass
-sigaction._fields_ = [
-    ('__sigaction_u', __sigaction_u),
-    ('sa_mask', sigset_t),
-    ('sa_flags', c_int),
-]
-assert sizeof(sigaction) == 12, sizeof(sigaction)
-assert alignment(sigaction) == 4, alignment(sigaction)
-sig_t = CFUNCTYPE(None, c_int)
-stack_t = __darwin_stack_t
-class sigvec(Structure):
-    pass
-sigvec._fields_ = [
-    ('sv_handler', CFUNCTYPE(None, c_int)),
-    ('sv_mask', c_int),
-    ('sv_flags', c_int),
-]
-assert sizeof(sigvec) == 12, sizeof(sigvec)
-assert alignment(sigvec) == 4, alignment(sigvec)
-class sigstack(Structure):
-    pass
-sigstack._fields_ = [
-    ('ss_sp', STRING),
-    ('ss_onstack', c_int),
-]
-assert sizeof(sigstack) == 8, sizeof(sigstack)
-assert alignment(sigstack) == 4, alignment(sigstack)
-u_char = c_ubyte
-u_short = c_ushort
-u_int = c_uint
-u_long = c_ulong
-ushort = c_ushort
-uint = c_uint
-u_quad_t = u_int64_t
-quad_t = int64_t
-qaddr_t = POINTER(quad_t)
-caddr_t = STRING
-daddr_t = int32_t
-fixpt_t = u_int32_t
-blkcnt_t = __darwin_blkcnt_t
-blksize_t = __darwin_blksize_t
-gid_t = __darwin_gid_t
-in_addr_t = __uint32_t
-in_port_t = __uint16_t
-ino_t = __darwin_ino_t
-key_t = __int32_t
-nlink_t = __uint16_t
-off_t = __darwin_off_t
-segsz_t = int32_t
-swblk_t = int32_t
-clock_t = __darwin_clock_t
-ssize_t = __darwin_ssize_t
-useconds_t = __darwin_useconds_t
-suseconds_t = __darwin_suseconds_t
-fd_mask = __int32_t
-class fd_set(Structure):
-    pass
-fd_set._fields_ = [
-    ('fds_bits', __int32_t * 32),
-]
-assert sizeof(fd_set) == 128, sizeof(fd_set)
-assert alignment(fd_set) == 4, alignment(fd_set)
-pthread_cond_t = __darwin_pthread_cond_t
-pthread_condattr_t = __darwin_pthread_condattr_t
-pthread_mutex_t = __darwin_pthread_mutex_t
-pthread_mutexattr_t = __darwin_pthread_mutexattr_t
-pthread_once_t = __darwin_pthread_once_t
-pthread_rwlock_t = __darwin_pthread_rwlock_t
-pthread_rwlockattr_t = __darwin_pthread_rwlockattr_t
-pthread_t = __darwin_pthread_t
-pthread_key_t = __darwin_pthread_key_t
-fsblkcnt_t = __darwin_fsblkcnt_t
-fsfilcnt_t = __darwin_fsfilcnt_t
-
-# values for enumeration 'idtype_t'
-idtype_t = c_int # enum
-id_t = __darwin_id_t
-class wait(Union):
-    pass
-class N4wait3DOLLAR_3E(Structure):
-    pass
-N4wait3DOLLAR_3E._fields_ = [
-    ('w_Termsig', c_uint, 7),
-    ('w_Coredump', c_uint, 1),
-    ('w_Retcode', c_uint, 8),
-    ('w_Filler', c_uint, 16),
-]
-assert sizeof(N4wait3DOLLAR_3E) == 4, sizeof(N4wait3DOLLAR_3E)
-assert alignment(N4wait3DOLLAR_3E) == 4, alignment(N4wait3DOLLAR_3E)
-class N4wait3DOLLAR_4E(Structure):
-    pass
-N4wait3DOLLAR_4E._fields_ = [
-    ('w_Stopval', c_uint, 8),
-    ('w_Stopsig', c_uint, 8),
-    ('w_Filler', c_uint, 16),
-]
-assert sizeof(N4wait3DOLLAR_4E) == 4, sizeof(N4wait3DOLLAR_4E)
-assert alignment(N4wait3DOLLAR_4E) == 4, alignment(N4wait3DOLLAR_4E)
-wait._fields_ = [
-    ('w_status', c_int),
-    ('w_T', N4wait3DOLLAR_3E),
-    ('w_S', N4wait3DOLLAR_4E),
-]
-assert sizeof(wait) == 4, sizeof(wait)
-assert alignment(wait) == 4, alignment(wait)
-class timespec(Structure):
-    pass
-timespec._fields_ = [
-    ('tv_sec', time_t),
-    ('tv_nsec', c_long),
-]
-assert sizeof(timespec) == 8, sizeof(timespec)
-assert alignment(timespec) == 4, alignment(timespec)
-class tm(Structure):
-    pass
-tm._fields_ = [
-    ('tm_sec', c_int),
-    ('tm_min', c_int),
-    ('tm_hour', c_int),
-    ('tm_mday', c_int),
-    ('tm_mon', c_int),
-    ('tm_year', c_int),
-    ('tm_wday', c_int),
-    ('tm_yday', c_int),
-    ('tm_isdst', c_int),
-    ('tm_gmtoff', c_long),
-    ('tm_zone', STRING),
-]
-assert sizeof(tm) == 44, sizeof(tm)
-assert alignment(tm) == 4, alignment(tm)
-__gnuc_va_list = STRING
-ptrdiff_t = c_int
-int8_t = c_byte
-int16_t = c_short
-uint8_t = c_ubyte
-uint16_t = c_ushort
-uint32_t = c_uint
-uint64_t = c_ulonglong
-int_least8_t = int8_t
-int_least16_t = int16_t
-int_least32_t = int32_t
-int_least64_t = int64_t
-uint_least8_t = uint8_t
-uint_least16_t = uint16_t
-uint_least32_t = uint32_t
-uint_least64_t = uint64_t
-int_fast8_t = int8_t
-int_fast16_t = int16_t
-int_fast32_t = int32_t
-int_fast64_t = int64_t
-uint_fast8_t = uint8_t
-uint_fast16_t = uint16_t
-uint_fast32_t = uint32_t
-uint_fast64_t = uint64_t
-intptr_t = c_long
-uintptr_t = c_ulong
-intmax_t = c_longlong
-uintmax_t = c_ulonglong
-__all__ = ['ENGINE', 'pkcs7_enc_content_st', '__int16_t',
-           'X509_REVOKED', 'SSL_CTX', 'UIT_BOOLEAN',
-           '__darwin_time_t', 'ucontext64_t', 'int_fast32_t',
-           'pem_ctx_st', 'uint8_t', 'fpos_t', 'X509', 'COMP_CTX',
-           'tm', 'N10pem_ctx_st4DOLLAR_17E', 'swblk_t',
-           'ASN1_TEMPLATE', '__darwin_pthread_t', 'fixpt_t',
-           'BIO_METHOD', 'ASN1_PRINTABLESTRING', 'EVP_ENCODE_CTX',
-           'dh_method', 'bio_f_buffer_ctx_struct', 'in_port_t',
-           'X509_SIG', '__darwin_ssize_t', '__darwin_sigset_t',
-           'wait', 'uint_fast16_t', 'N12asn1_type_st4DOLLAR_11E',
-           'uint_least8_t', 'pthread_rwlock_t', 'ASN1_IA5STRING',
-           'fsfilcnt_t', 'ucontext', '__uint64_t', 'timespec',
-           'x509_cinf_st', 'COMP_METHOD', 'MD5_CTX', 'buf_mem_st',
-           'ASN1_ENCODING_st', 'PBEPARAM', 'X509_NAME_ENTRY',
-           '__darwin_va_list', 'ucontext_t', 'lhash_st',
-           'N4wait3DOLLAR_4E', '__darwin_uuid_t',
-           '_ossl_old_des_ks_struct', 'id_t', 'ASN1_BIT_STRING',
-           'va_list', '__darwin_wchar_t', 'pthread_key_t',
-           'pkcs7_signer_info_st', 'ASN1_METHOD', 'DSA_SIG', 'DSA',
-           'UIT_NONE', 'pthread_t', '__darwin_useconds_t',
-           'uint_fast8_t', 'UI_STRING', 'DES_cblock',
-           '__darwin_mcontext64_t', 'rlim_t', 'PEM_Encode_Seal_st',
-           'SHAstate_st', 'u_quad_t', 'openssl_fptr',
-           '_opaque_pthread_rwlockattr_t',
-           'N18x509_attributes_st4DOLLAR_13E',
-           '__darwin_pthread_rwlock_t', 'daddr_t', 'ui_string_st',
-           'x509_file_st', 'X509_req_info_st', 'int_least64_t',
-           'evp_Encode_Ctx_st', 'X509_OBJECTS', 'CRYPTO_EX_DATA',
-           '__int8_t', 'AUTHORITY_KEYID_st', '_opaque_pthread_attr_t',
-           'sigstack', 'EVP_CIPHER_CTX', 'X509_extension_st', 'pid_t',
-           'RSA_METHOD', 'PEM_USER', 'pem_recip_st', 'env_md_ctx_st',
-           'rc5_key_st', 'ui_st', 'X509_PUBKEY', 'u_int8_t',
-           'ASN1_ITEM_st', 'pkcs7_recip_info_st', 'ssl2_state_st',
-           'off_t', 'N10ssl_ctx_st4DOLLAR_18E', 'crypto_ex_data_st',
-           'ui_method_st', '__darwin_pthread_rwlockattr_t',
-           'CRYPTO_EX_dup', '__darwin_ino_t', '__sFILE',
-           'OSUnknownByteOrder', 'BN_MONT_CTX', 'ASN1_NULL', 'time_t',
-           'CRYPTO_EX_new', 'asn1_type_st', 'CRYPTO_EX_DATA_FUNCS',
-           'user_time_t', 'BIGNUM', 'pthread_rwlockattr_t',
-           'ASN1_VALUE_st', 'DH_METHOD', '__darwin_off_t',
-           '_opaque_pthread_t', 'bn_blinding_st', 'RSA', 'ssize_t',
-           'mcontext64_t', 'user_long_t', 'fsblkcnt_t', 'cert_st',
-           '__darwin_pthread_condattr_t', 'X509_PKEY',
-           '__darwin_id_t', '__darwin_nl_item', 'SSL2_STATE', 'FILE',
-           'pthread_mutexattr_t', 'size_t',
-           '_ossl_old_des_key_schedule', 'pkcs7_issuer_and_serial_st',
-           'sigval', 'CRYPTO_MEM_LEAK_CB', 'X509_NAME', 'blkcnt_t',
-           'uint_least16_t', '__darwin_dev_t', 'evp_cipher_info_st',
-           'BN_BLINDING', 'ssl3_state_st', 'uint_least64_t',
-           'user_addr_t', 'DES_key_schedule', 'RIPEMD160_CTX',
-           'u_char', 'X509_algor_st', 'uid_t', 'sess_cert_st',
-           'u_int64_t', 'u_int16_t', 'sigset_t', '__darwin_ptrdiff_t',
-           'ASN1_CTX', 'STACK', '__int32_t', 'UI_METHOD',
-           'NETSCAPE_SPKI', 'UIT_PROMPT', 'st_CRYPTO_EX_DATA_IMPL',
-           'cast_key_st', 'X509_HASH_DIR_CTX', 'sigevent',
-           'user_ssize_t', 'clock_t', 'aes_key_st',
-           '__darwin_socklen_t', '__darwin_intptr_t', 'int_fast64_t',
-           'asn1_string_table_st', 'uint_fast32_t',
-           'ASN1_VISIBLESTRING', 'DSA_SIG_st', 'obj_name_st',
-           'X509_LOOKUP_METHOD', 'u_int32_t', 'EVP_CIPHER_INFO',
-           '__gnuc_va_list', 'AES_KEY', 'PKCS7_ISSUER_AND_SERIAL',
-           'BN_CTX', '__darwin_blkcnt_t', 'key_t', 'SHA_CTX',
-           'pkcs7_signed_st', 'SSL', 'N10pem_ctx_st4DOLLAR_16E',
-           'pthread_attr_t', 'EVP_MD', 'uint', 'ASN1_BOOLEAN',
-           'ino_t', '__darwin_clock_t', 'ASN1_OCTET_STRING',
-           'asn1_ctx_st', 'BIO_F_BUFFER_CTX', 'bn_mont_ctx_st',
-           'X509_REQ_INFO', 'PEM_CTX', 'sigvec',
-           '__darwin_pthread_mutexattr_t', 'x509_attributes_st',
-           'stack_t', '__darwin_mode_t', '__mbstate_t',
-           'asn1_object_st', 'ASN1_ENCODING', '__uint8_t',
-           'LHASH_NODE', 'PKCS7_SIGNER_INFO', 'asn1_method_st',
-           'stack_st', 'bio_info_cb', 'div_t', 'UIT_VERIFY',
-           'PBEPARAM_st', 'N4wait3DOLLAR_3E', 'quad_t', '__siginfo',
-           '__darwin_mbstate_t', 'rsa_st', 'ASN1_UNIVERSALSTRING',
-           'uint64_t', 'ssl_comp_st', 'X509_OBJECT', 'pthread_cond_t',
-           'DH', '__darwin_wctype_t', 'PKCS7_ENVELOPE', 'ASN1_TLC_st',
-           'sig_atomic_t', 'BIO', 'nlink_t', 'BUF_MEM', 'SSL3_RECORD',
-           'bio_method_st', 'timeval', 'UI_string_types', 'BIO_dummy',
-           'ssl_ctx_st', 'NETSCAPE_CERT_SEQUENCE',
-           'BIT_STRING_BITNAME_st', '__darwin_pthread_attr_t',
-           'int8_t', '__darwin_wint_t', 'OBJ_NAME',
-           'PKCS8_PRIV_KEY_INFO', 'PBE2PARAM_st',
-           'LHASH_DOALL_FN_TYPE', 'x509_st', 'X509_VAL', 'dev_t',
-           'ASN1_TEMPLATE_st', 'MD5state_st', '__uint16_t',
-           'LHASH_DOALL_ARG_FN_TYPE', 'mdc2_ctx_st', 'SSL3_STATE',
-           'ssl3_buffer_st', 'ASN1_ITEM_EXP',
-           '_opaque_pthread_condattr_t', 'mode_t', 'ASN1_VALUE',
-           'qaddr_t', '__darwin_gid_t', 'EVP_PKEY', 'CRYPTO_EX_free',
-           '_ossl_old_des_cblock', 'X509_INFO', 'asn1_string_st',
-           'intptr_t', 'UIT_INFO', 'int_fast8_t', 'sigaltstack',
-           'env_md_st', 'LHASH', '__darwin_ucontext_t',
-           'PKCS7_SIGN_ENVELOPE', '__darwin_mcontext_t', 'ct_rune_t',
-           'MD2_CTX', 'pthread_once_t', 'SSL3_BUFFER', 'fd_mask',
-           'ASN1_TYPE', 'PKCS7_SIGNED', 'ssl3_record_st', 'BF_KEY',
-           'MD4state_st', 'MD4_CTX', 'int16_t', 'SSL_CIPHER',
-           'rune_t', 'X509_TRUST', 'siginfo_t', 'X509_STORE',
-           '__sbuf', 'X509_STORE_CTX', '__darwin_blksize_t', 'ldiv_t',
-           'ASN1_TIME', 'SSL_METHOD', 'X509_LOOKUP',
-           'Netscape_spki_st', 'P_PID', 'sigaction', 'sig_t',
-           'hostent', 'x509_cert_aux_st', '_opaque_pthread_cond_t',
-           'segsz_t', 'ushort', '__darwin_ct_rune_t', 'fd_set',
-           'BN_RECP_CTX', 'x509_lookup_st', 'uint16_t', 'pkcs7_st',
-           'asn1_header_st', '__darwin_pthread_key_t',
-           'x509_trust_st', '__darwin_pthread_handler_rec', 'int32_t',
-           'X509_CRL_INFO', 'N11evp_pkey_st4DOLLAR_12E', 'MDC2_CTX',
-           'N23_ossl_old_des_ks_struct4DOLLAR_10E', 'ASN1_HEADER',
-           'X509_crl_info_st', 'LHASH_HASH_FN_TYPE',
-           '_opaque_pthread_mutexattr_t', 'ssl_st',
-           'N8pkcs7_st4DOLLAR_15E', 'evp_pkey_st',
-           'pkcs7_signedandenveloped_st', '__darwin_mach_port_t',
-           'EVP_PBE_KEYGEN', '_opaque_pthread_mutex_t',
-           'ASN1_UTCTIME', 'mcontext', 'crypto_ex_data_func_st',
-           'u_long', 'PBKDF2PARAM_st', 'rc4_key_st', 'DSA_METHOD',
-           'EVP_CIPHER', 'BIT_STRING_BITNAME', 'PKCS7_RECIP_INFO',
-           'ssl3_enc_method', 'X509_CERT_AUX', 'uintmax_t',
-           'int_fast16_t', 'RC5_32_KEY', 'ucontext64', 'ASN1_INTEGER',
-           'u_short', 'N14x509_object_st4DOLLAR_14E', 'mcontext64',
-           'X509_sig_st', 'ASN1_GENERALSTRING', 'PKCS7', '__sFILEX',
-           'X509_name_entry_st', 'ssl_session_st', 'caddr_t',
-           'bignum_st', 'X509_CINF', '__darwin_pthread_cond_t',
-           'ASN1_TLC', 'PKCS7_ENCRYPT', 'NETSCAPE_SPKAC',
-           'Netscape_spkac_st', 'idtype_t', 'UIT_ERROR',
-           'uint_fast64_t', 'in_addr_t', 'pthread_mutex_t',
-           '__int64_t', 'ASN1_BMPSTRING', 'uint32_t',
-           'PEM_ENCODE_SEAL_CTX', 'suseconds_t', 'ASN1_OBJECT',
-           'X509_val_st', 'private_key_st', 'CRYPTO_dynlock',
-           'X509_objects_st', 'CRYPTO_EX_DATA_IMPL',
-           'pthread_condattr_t', 'PKCS7_DIGEST', 'uint_least32_t',
-           'ASN1_STRING', '__uint32_t', 'P_PGID', 'rsa_meth_st',
-           'X509_crl_st', 'RC2_KEY', '__darwin_fsfilcnt_t',
-           'X509_revoked_st', 'PBE2PARAM', 'blksize_t',
-           'Netscape_certificate_sequence', 'ssl_cipher_st',
-           'bignum_ctx', 'register_t', 'ASN1_UTF8STRING',
-           'pkcs7_encrypted_st', 'RC4_KEY', '__darwin_ucontext64_t',
-           'N13ssl2_state_st4DOLLAR_19E', 'bn_recp_ctx_st',
-           'CAST_KEY', 'X509_ATTRIBUTE', '__darwin_suseconds_t',
-           '__sigaction', 'user_ulong_t', 'syscall_arg_t',
-           'evp_cipher_ctx_st', 'X509_ALGOR', 'mcontext_t',
-           'const_DES_cblock', '__darwin_fsblkcnt_t', 'dsa_st',
-           'int_least8_t', 'MD2state_st', 'X509_EXTENSION',
-           'GEN_SESSION_CB', 'int_least16_t', '__darwin_wctrans_t',
-           'PBKDF2PARAM', 'x509_lookup_method_st', 'pem_password_cb',
-           'X509_info_st', 'x509_store_st', '__darwin_natural_t',
-           'X509_pubkey_st', 'pkcs7_digest_st', '__darwin_size_t',
-           'ASN1_STRING_TABLE', 'OSLittleEndian', 'RIPEMD160state_st',
-           'pkcs7_enveloped_st', 'UI', 'ptrdiff_t', 'X509_REQ',
-           'CRYPTO_dynlock_value', 'X509_req_st', 'x509_store_ctx_st',
-           'N13ssl3_state_st4DOLLAR_20E', 'lhash_node_st',
-           '__darwin_pthread_mutex_t', 'LHASH_COMP_FN_TYPE',
-           '__darwin_rune_t', 'rlimit', '__darwin_pthread_once_t',
-           'OSBigEndian', 'uintptr_t', '__darwin_uid_t', 'u_int',
-           'ASN1_T61STRING', 'gid_t', 'ssl_method_st', 'ASN1_ITEM',
-           'ASN1_ENUMERATED', '_opaque_pthread_rwlock_t',
-           'pkcs8_priv_key_info_st', 'intmax_t', 'sigcontext',
-           'X509_CRL', 'rc2_key_st', 'engine_st', 'x509_object_st',
-           '_opaque_pthread_once_t', 'DES_ks', 'SSL_COMP',
-           'dsa_method', 'int64_t', 'bio_st', 'bf_key_st',
-           'ASN1_GENERALIZEDTIME', 'PKCS7_ENC_CONTENT',
-           '__darwin_pid_t', 'lldiv_t', 'comp_method_st',
-           'EVP_MD_CTX', 'evp_cipher_st', 'X509_name_st',
-           'x509_hash_dir_st', '__darwin_mach_port_name_t',
-           'useconds_t', 'user_size_t', 'SSL_SESSION', 'rusage',
-           'ssl_crock_st', 'int_least32_t', '__sigaction_u', 'dh_st',
-           'P_ALL', '__darwin_stack_t', 'N6DES_ks3DOLLAR_9E',
-           'comp_ctx_st', 'X509_CERT_FILE_CTX']
diff --git a/Lib/test/test_lib2to3/data/py2_test_grammar.py b/Lib/test/test_lib2to3/data/py2_test_grammar.py
deleted file mode 100644
index 1a631510f4dba7..00000000000000
--- a/Lib/test/test_lib2to3/data/py2_test_grammar.py
+++ /dev/null
@@ -1,971 +0,0 @@
-# Python test set -- part 1, grammar.
-# This just tests whether the parser accepts them all.
-
-# NOTE: When you run this test as a script from the command line, you
-# get warnings about certain hex/oct constants.  Since those are
-# issued by the parser, you can't suppress them by adding a
-# filterwarnings() call to this module.  Therefore, to shut up the
-# regression test, the filterwarnings() call has been added to
-# regrtest.py.
-
-from test.test_support import check_syntax_error
-import unittest
-import sys
-# testing import *
-from sys import *
-
-class TokenTests(unittest.TestCase):
-
-    def testBackslash(self):
-        # Backslash means line continuation:
-        x = 1 \
-        + 1
-        self.assertEquals(x, 2, 'backslash for line continuation')
-
-        # Backslash does not means continuation in comments :\
-        x = 0
-        self.assertEquals(x, 0, 'backslash ending comment')
-
-    def testPlainIntegers(self):
-        self.assertEquals(0xff, 255)
-        self.assertEquals(0377, 255)
-        self.assertEquals(2147483647, 017777777777)
-        # "0x" is not a valid literal
-        self.assertRaises(SyntaxError, eval, "0x")
-        from sys import maxint
-        if maxint == 2147483647:
-            self.assertEquals(-2147483647-1, -020000000000)
-            # XXX -2147483648
-            self.assert_(037777777777 > 0)
-            self.assert_(0xffffffff > 0)
-            for s in '2147483648', '040000000000', '0x100000000':
-                try:
-                    x = eval(s)
-                except OverflowError:
-                    self.fail("OverflowError on huge integer literal %r" % s)
-        elif maxint == 9223372036854775807:
-            self.assertEquals(-9223372036854775807-1, -01000000000000000000000)
-            self.assert_(01777777777777777777777 > 0)
-            self.assert_(0xffffffffffffffff > 0)
-            for s in '9223372036854775808', '02000000000000000000000', \
-                     '0x10000000000000000':
-                try:
-                    x = eval(s)
-                except OverflowError:
-                    self.fail("OverflowError on huge integer literal %r" % s)
-        else:
-            self.fail('Weird maxint value %r' % maxint)
-
-    def testLongIntegers(self):
-        x = 0L
-        x = 0l
-        x = 0xffffffffffffffffL
-        x = 0xffffffffffffffffl
-        x = 077777777777777777L
-        x = 077777777777777777l
-        x = 123456789012345678901234567890L
-        x = 123456789012345678901234567890l
-
-    def testFloats(self):
-        x = 3.14
-        x = 314.
-        x = 0.314
-        # XXX x = 000.314
-        x = .314
-        x = 3e14
-        x = 3E14
-        x = 3e-14
-        x = 3e+14
-        x = 3.e14
-        x = .3e14
-        x = 3.1e4
-
-    def testStringLiterals(self):
-        x = ''; y = ""; self.assert_(len(x) == 0 and x == y)
-        x = '\''; y = "'"; self.assert_(len(x) == 1 and x == y and ord(x) == 39)
-        x = '"'; y = "\""; self.assert_(len(x) == 1 and x == y and ord(x) == 34)
-        x = "doesn't \"shrink\" does it"
-        y = 'doesn\'t "shrink" does it'
-        self.assert_(len(x) == 24 and x == y)
-        x = "does \"shrink\" doesn't it"
-        y = 'does "shrink" doesn\'t it'
-        self.assert_(len(x) == 24 and x == y)
-        x = """
-The "quick"
-brown fox
-jumps over
-the 'lazy' dog.
-"""
-        y = '\nThe "quick"\nbrown fox\njumps over\nthe \'lazy\' dog.\n'
-        self.assertEquals(x, y)
-        y = '''
-The "quick"
-brown fox
-jumps over
-the 'lazy' dog.
-'''
-        self.assertEquals(x, y)
-        y = "\n\
-The \"quick\"\n\
-brown fox\n\
-jumps over\n\
-the 'lazy' dog.\n\
-"
-        self.assertEquals(x, y)
-        y = '\n\
-The \"quick\"\n\
-brown fox\n\
-jumps over\n\
-the \'lazy\' dog.\n\
-'
-        self.assertEquals(x, y)
-
-
-class GrammarTests(unittest.TestCase):
-
-    # single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
-    # XXX can't test in a script -- this rule is only used when interactive
-
-    # file_input: (NEWLINE | stmt)* ENDMARKER
-    # Being tested as this very moment this very module
-
-    # expr_input: testlist NEWLINE
-    # XXX Hard to test -- used only in calls to input()
-
-    def testEvalInput(self):
-        # testlist ENDMARKER
-        x = eval('1, 0 or 1')
-
-    def testFuncdef(self):
-        ### 'def' NAME parameters ':' suite
-        ### parameters: '(' [varargslist] ')'
-        ### varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' ('**'|'*' '*') NAME]
-        ###            | ('**'|'*' '*') NAME)
-        ###            | fpdef ['=' test] (',' fpdef ['=' test])* [',']
-        ### fpdef: NAME | '(' fplist ')'
-        ### fplist: fpdef (',' fpdef)* [',']
-        ### arglist: (argument ',')* (argument | *' test [',' '**' test] | '**' test)
-        ### argument: [test '='] test   # Really [keyword '='] test
-        def f1(): pass
-        f1()
-        f1(*())
-        f1(*(), **{})
-        def f2(one_argument): pass
-        def f3(two, arguments): pass
-        def f4(two, (compound, (argument, list))): pass
-        def f5((compound, first), two): pass
-        self.assertEquals(f2.func_code.co_varnames, ('one_argument',))
-        self.assertEquals(f3.func_code.co_varnames, ('two', 'arguments'))
-        if sys.platform.startswith('java'):
-            self.assertEquals(f4.func_code.co_varnames,
-                   ('two', '(compound, (argument, list))', 'compound', 'argument',
-                                'list',))
-            self.assertEquals(f5.func_code.co_varnames,
-                   ('(compound, first)', 'two', 'compound', 'first'))
-        else:
-            self.assertEquals(f4.func_code.co_varnames,
-                  ('two', '.1', 'compound', 'argument',  'list'))
-            self.assertEquals(f5.func_code.co_varnames,
-                  ('.0', 'two', 'compound', 'first'))
-        def a1(one_arg,): pass
-        def a2(two, args,): pass
-        def v0(*rest): pass
-        def v1(a, *rest): pass
-        def v2(a, b, *rest): pass
-        def v3(a, (b, c), *rest): return a, b, c, rest
-
-        f1()
-        f2(1)
-        f2(1,)
-        f3(1, 2)
-        f3(1, 2,)
-        f4(1, (2, (3, 4)))
-        v0()
-        v0(1)
-        v0(1,)
-        v0(1,2)
-        v0(1,2,3,4,5,6,7,8,9,0)
-        v1(1)
-        v1(1,)
-        v1(1,2)
-        v1(1,2,3)
-        v1(1,2,3,4,5,6,7,8,9,0)
-        v2(1,2)
-        v2(1,2,3)
-        v2(1,2,3,4)
-        v2(1,2,3,4,5,6,7,8,9,0)
-        v3(1,(2,3))
-        v3(1,(2,3),4)
-        v3(1,(2,3),4,5,6,7,8,9,0)
-
-        # ceval unpacks the formal arguments into the first argcount names;
-        # thus, the names nested inside tuples must appear after these names.
-        if sys.platform.startswith('java'):
-            self.assertEquals(v3.func_code.co_varnames, ('a', '(b, c)', 'rest', 'b', 'c'))
-        else:
-            self.assertEquals(v3.func_code.co_varnames, ('a', '.1', 'rest', 'b', 'c'))
-        self.assertEquals(v3(1, (2, 3), 4), (1, 2, 3, (4,)))
-        def d01(a=1): pass
-        d01()
-        d01(1)
-        d01(*(1,))
-        d01(**{'a':2})
-        def d11(a, b=1): pass
-        d11(1)
-        d11(1, 2)
-        d11(1, **{'b':2})
-        def d21(a, b, c=1): pass
-        d21(1, 2)
-        d21(1, 2, 3)
-        d21(*(1, 2, 3))
-        d21(1, *(2, 3))
-        d21(1, 2, *(3,))
-        d21(1, 2, **{'c':3})
-        def d02(a=1, b=2): pass
-        d02()
-        d02(1)
-        d02(1, 2)
-        d02(*(1, 2))
-        d02(1, *(2,))
-        d02(1, **{'b':2})
-        d02(**{'a': 1, 'b': 2})
-        def d12(a, b=1, c=2): pass
-        d12(1)
-        d12(1, 2)
-        d12(1, 2, 3)
-        def d22(a, b, c=1, d=2): pass
-        d22(1, 2)
-        d22(1, 2, 3)
-        d22(1, 2, 3, 4)
-        def d01v(a=1, *rest): pass
-        d01v()
-        d01v(1)
-        d01v(1, 2)
-        d01v(*(1, 2, 3, 4))
-        d01v(*(1,))
-        d01v(**{'a':2})
-        def d11v(a, b=1, *rest): pass
-        d11v(1)
-        d11v(1, 2)
-        d11v(1, 2, 3)
-        def d21v(a, b, c=1, *rest): pass
-        d21v(1, 2)
-        d21v(1, 2, 3)
-        d21v(1, 2, 3, 4)
-        d21v(*(1, 2, 3, 4))
-        d21v(1, 2, **{'c': 3})
-        def d02v(a=1, b=2, *rest): pass
-        d02v()
-        d02v(1)
-        d02v(1, 2)
-        d02v(1, 2, 3)
-        d02v(1, *(2, 3, 4))
-        d02v(**{'a': 1, 'b': 2})
-        def d12v(a, b=1, c=2, *rest): pass
-        d12v(1)
-        d12v(1, 2)
-        d12v(1, 2, 3)
-        d12v(1, 2, 3, 4)
-        d12v(*(1, 2, 3, 4))
-        d12v(1, 2, *(3, 4, 5))
-        d12v(1, *(2,), **{'c': 3})
-        def d22v(a, b, c=1, d=2, *rest): pass
-        d22v(1, 2)
-        d22v(1, 2, 3)
-        d22v(1, 2, 3, 4)
-        d22v(1, 2, 3, 4, 5)
-        d22v(*(1, 2, 3, 4))
-        d22v(1, 2, *(3, 4, 5))
-        d22v(1, *(2, 3), **{'d': 4})
-        def d31v((x)): pass
-        d31v(1)
-        def d32v((x,)): pass
-        d32v((1,))
-
-        # keyword arguments after *arglist
-        def f(*args, **kwargs):
-            return args, kwargs
-        self.assertEquals(f(1, x=2, *[3, 4], y=5), ((1, 3, 4),
-                                                    {'x':2, 'y':5}))
-        self.assertRaises(SyntaxError, eval, "f(1, *(2,3), 4)")
-        self.assertRaises(SyntaxError, eval, "f(1, x=2, *(3,4), x=5)")
-
-        # Check ast errors in *args and *kwargs
-        check_syntax_error(self, "f(*g(1=2))")
-        check_syntax_error(self, "f(**g(1=2))")
-
-    def testLambdef(self):
-        ### lambdef: 'lambda' [varargslist] ':' test
-        l1 = lambda : 0
-        self.assertEquals(l1(), 0)
-        l2 = lambda : a[d] # XXX just testing the expression
-        l3 = lambda : [2 < x for x in [-1, 3, 0L]]
-        self.assertEquals(l3(), [0, 1, 0])
-        l4 = lambda x = lambda y = lambda z=1 : z : y() : x()
-        self.assertEquals(l4(), 1)
-        l5 = lambda x, y, z=2: x + y + z
-        self.assertEquals(l5(1, 2), 5)
-        self.assertEquals(l5(1, 2, 3), 6)
-        check_syntax_error(self, "lambda x: x = 2")
-        check_syntax_error(self, "lambda (None,): None")
-
-    ### stmt: simple_stmt | compound_stmt
-    # Tested below
-
-    def testSimpleStmt(self):
-        ### simple_stmt: small_stmt (';' small_stmt)* [';']
-        x = 1; pass; del x
-        def foo():
-            # verify statements that end with semi-colons
-            x = 1; pass; del x;
-        foo()
-
-    ### small_stmt: expr_stmt | print_stmt  | pass_stmt | del_stmt | flow_stmt | import_stmt | global_stmt | access_stmt | exec_stmt
-    # Tested below
-
-    def testExprStmt(self):
-        # (exprlist '=')* exprlist
-        1
-        1, 2, 3
-        x = 1
-        x = 1, 2, 3
-        x = y = z = 1, 2, 3
-        x, y, z = 1, 2, 3
-        abc = a, b, c = x, y, z = xyz = 1, 2, (3, 4)
-
-        check_syntax_error(self, "x + 1 = 1")
-        check_syntax_error(self, "a + 1 = b + 2")
-
-    def testPrintStmt(self):
-        # 'print' (test ',')* [test]
-        import StringIO
-
-        # Can't test printing to real stdout without comparing output
-        # which is not available in unittest.
-        save_stdout = sys.stdout
-        sys.stdout = StringIO.StringIO()
-
-        print 1, 2, 3
-        print 1, 2, 3,
-        print
-        print 0 or 1, 0 or 1,
-        print 0 or 1
-
-        # 'print' '>>' test ','
-        print >> sys.stdout, 1, 2, 3
-        print >> sys.stdout, 1, 2, 3,
-        print >> sys.stdout
-        print >> sys.stdout, 0 or 1, 0 or 1,
-        print >> sys.stdout, 0 or 1
-
-        # test printing to an instance
-        class Gulp:
-            def write(self, msg): pass
-
-        gulp = Gulp()
-        print >> gulp, 1, 2, 3
-        print >> gulp, 1, 2, 3,
-        print >> gulp
-        print >> gulp, 0 or 1, 0 or 1,
-        print >> gulp, 0 or 1
-
-        # test print >> None
-        def driver():
-            oldstdout = sys.stdout
-            sys.stdout = Gulp()
-            try:
-                tellme(Gulp())
-                tellme()
-            finally:
-                sys.stdout = oldstdout
-
-        # we should see this once
-        def tellme(file=sys.stdout):
-            print >> file, 'hello world'
-
-        driver()
-
-        # we should not see this at all
-        def tellme(file=None):
-            print >> file, 'goodbye universe'
-
-        driver()
-
-        self.assertEqual(sys.stdout.getvalue(), '''\
-1 2 3
-1 2 3
-1 1 1
-1 2 3
-1 2 3
-1 1 1
-hello world
-''')
-        sys.stdout = save_stdout
-
-        # syntax errors
-        check_syntax_error(self, 'print ,')
-        check_syntax_error(self, 'print >> x,')
-
-    def testDelStmt(self):
-        # 'del' exprlist
-        abc = [1,2,3]
-        x, y, z = abc
-        xyz = x, y, z
-
-        del abc
-        del x, y, (z, xyz)
-
-    def testPassStmt(self):
-        # 'pass'
-        pass
-
-    # flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt
-    # Tested below
-
-    def testBreakStmt(self):
-        # 'break'
-        while 1: break
-
-    def testContinueStmt(self):
-        # 'continue'
-        i = 1
-        while i: i = 0; continue
-
-        msg = ""
-        while not msg:
-            msg = "ok"
-            try:
-                continue
-                msg = "continue failed to continue inside try"
-            except:
-                msg = "continue inside try called except block"
-        if msg != "ok":
-            self.fail(msg)
-
-        msg = ""
-        while not msg:
-            msg = "finally block not called"
-            try:
-                continue
-            finally:
-                msg = "ok"
-        if msg != "ok":
-            self.fail(msg)
-
-    def test_break_continue_loop(self):
-        # This test warrants an explanation. It is a test specifically for SF bugs
-        # #463359 and #462937. The bug is that a 'break' statement executed or
-        # exception raised inside a try/except inside a loop, *after* a continue
-        # statement has been executed in that loop, will cause the wrong number of
-        # arguments to be popped off the stack and the instruction pointer reset to
-        # a very small number (usually 0.) Because of this, the following test
-        # *must* written as a function, and the tracking vars *must* be function
-        # arguments with default values. Otherwise, the test will loop and loop.
-
-        def test_inner(extra_burning_oil = 1, count=0):
-            big_hippo = 2
-            while big_hippo:
-                count += 1
-                try:
-                    if extra_burning_oil and big_hippo == 1:
-                        extra_burning_oil -= 1
-                        break
-                    big_hippo -= 1
-                    continue
-                except:
-                    raise
-            if count > 2 or big_hippo <> 1:
-                self.fail("continue then break in try/except in loop broken!")
-        test_inner()
-
-    def testReturn(self):
-        # 'return' [testlist]
-        def g1(): return
-        def g2(): return 1
-        g1()
-        x = g2()
-        check_syntax_error(self, "class foo:return 1")
-
-    def testYield(self):
-        check_syntax_error(self, "class foo:yield 1")
-
-    def testRaise(self):
-        # 'raise' test [',' test]
-        try: raise RuntimeError, 'just testing'
-        except RuntimeError: pass
-        try: raise KeyboardInterrupt
-        except KeyboardInterrupt: pass
-
-    def testImport(self):
-        # 'import' dotted_as_names
-        import sys
-        import time, sys
-        # 'from' dotted_name 'import' ('*' | '(' import_as_names ')' | import_as_names)
-        from time import time
-        from time import (time)
-        # not testable inside a function, but already done at top of the module
-        # from sys import *
-        from sys import path, argv
-        from sys import (path, argv)
-        from sys import (path, argv,)
-
-    def testGlobal(self):
-        # 'global' NAME (',' NAME)*
-        global a
-        global a, b
-        global one, two, three, four, five, six, seven, eight, nine, ten
-
-    def testExec(self):
-        # 'exec' expr ['in' expr [',' expr]]
-        z = None
-        del z
-        exec 'z=1+1\n'
-        if z != 2: self.fail('exec \'z=1+1\'\\n')
-        del z
-        exec 'z=1+1'
-        if z != 2: self.fail('exec \'z=1+1\'')
-        z = None
-        del z
-        import types
-        if hasattr(types, "UnicodeType"):
-            exec r"""if 1:
-            exec u'z=1+1\n'
-            if z != 2: self.fail('exec u\'z=1+1\'\\n')
-            del z
-            exec u'z=1+1'
-            if z != 2: self.fail('exec u\'z=1+1\'')"""
-        g = {}
-        exec 'z = 1' in g
-        if g.has_key('__builtins__'): del g['__builtins__']
-        if g != {'z': 1}: self.fail('exec \'z = 1\' in g')
-        g = {}
-        l = {}
-
-        import warnings
-        warnings.filterwarnings("ignore", "global statement", module="<string>")
-        exec 'global a; a = 1; b = 2' in g, l
-        if g.has_key('__builtins__'): del g['__builtins__']
-        if l.has_key('__builtins__'): del l['__builtins__']
-        if (g, l) != ({'a':1}, {'b':2}):
-            self.fail('exec ... in g (%s), l (%s)' %(g,l))
-
-    def testAssert(self):
-        # assert_stmt: 'assert' test [',' test]
-        assert 1
-        assert 1, 1
-        assert lambda x:x
-        assert 1, lambda x:x+1
-        try:
-            assert 0, "msg"
-        except AssertionError, e:
-            self.assertEquals(e.args[0], "msg")
-        else:
-            if __debug__:
-                self.fail("AssertionError not raised by assert 0")
-
-    ### compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef
-    # Tested below
-
-    def testIf(self):
-        # 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
-        if 1: pass
-        if 1: pass
-        else: pass
-        if 0: pass
-        elif 0: pass
-        if 0: pass
-        elif 0: pass
-        elif 0: pass
-        elif 0: pass
-        else: pass
-
-    def testWhile(self):
-        # 'while' test ':' suite ['else' ':' suite]
-        while 0: pass
-        while 0: pass
-        else: pass
-
-        # Issue1920: "while 0" is optimized away,
-        # ensure that the "else" clause is still present.
-        x = 0
-        while 0:
-            x = 1
-        else:
-            x = 2
-        self.assertEquals(x, 2)
-
-    def testFor(self):
-        # 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite]
-        for i in 1, 2, 3: pass
-        for i, j, k in (): pass
-        else: pass
-        class Squares:
-            def __init__(self, max):
-                self.max = max
-                self.sofar = []
-            def __len__(self): return len(self.sofar)
-            def __getitem__(self, i):
-                if not 0 <= i < self.max: raise IndexError
-                n = len(self.sofar)
-                while n <= i:
-                    self.sofar.append(n*n)
-                    n = n+1
-                return self.sofar[i]
-        n = 0
-        for x in Squares(10): n = n+x
-        if n != 285:
-            self.fail('for over growing sequence')
-
-        result = []
-        for x, in [(1,), (2,), (3,)]:
-            result.append(x)
-        self.assertEqual(result, [1, 2, 3])
-
-    def testTry(self):
-        ### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
-        ###         | 'try' ':' suite 'finally' ':' suite
-        ### except_clause: 'except' [expr [('as' | ',') expr]]
-        try:
-            1/0
-        except ZeroDivisionError:
-            pass
-        else:
-            pass
-        try: 1/0
-        except EOFError: pass
-        except TypeError as msg: pass
-        except RuntimeError, msg: pass
-        except: pass
-        else: pass
-        try: 1/0
-        except (EOFError, TypeError, ZeroDivisionError): pass
-        try: 1/0
-        except (EOFError, TypeError, ZeroDivisionError), msg: pass
-        try: pass
-        finally: pass
-
-    def testSuite(self):
-        # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
-        if 1: pass
-        if 1:
-            pass
-        if 1:
-            #
-            #
-            #
-            pass
-            pass
-            #
-            pass
-            #
-
-    def testTest(self):
-        ### and_test ('or' and_test)*
-        ### and_test: not_test ('and' not_test)*
-        ### not_test: 'not' not_test | comparison
-        if not 1: pass
-        if 1 and 1: pass
-        if 1 or 1: pass
-        if not not not 1: pass
-        if not 1 and 1 and 1: pass
-        if 1 and 1 or 1 and 1 and 1 or not 1 and 1: pass
-
-    def testComparison(self):
-        ### comparison: expr (comp_op expr)*
-        ### comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
-        if 1: pass
-        x = (1 == 1)
-        if 1 == 1: pass
-        if 1 != 1: pass
-        if 1 <> 1: pass
-        if 1 < 1: pass
-        if 1 > 1: pass
-        if 1 <= 1: pass
-        if 1 >= 1: pass
-        if 1 is 1: pass
-        if 1 is not 1: pass
-        if 1 in (): pass
-        if 1 not in (): pass
-        if 1 < 1 > 1 == 1 >= 1 <= 1 <> 1 != 1 in 1 not in 1 is 1 is not 1: pass
-
-    def testBinaryMaskOps(self):
-        x = 1 & 1
-        x = 1 ^ 1
-        x = 1 | 1
-
-    def testShiftOps(self):
-        x = 1 << 1
-        x = 1 >> 1
-        x = 1 << 1 >> 1
-
-    def testAdditiveOps(self):
-        x = 1
-        x = 1 + 1
-        x = 1 - 1 - 1
-        x = 1 - 1 + 1 - 1 + 1
-
-    def testMultiplicativeOps(self):
-        x = 1 * 1
-        x = 1 / 1
-        x = 1 % 1
-        x = 1 / 1 * 1 % 1
-
-    def testUnaryOps(self):
-        x = +1
-        x = -1
-        x = ~1
-        x = ~1 ^ 1 & 1 | 1 & 1 ^ -1
-        x = -1*1/1 + 1*1 - ---1*1
-
-    def testSelectors(self):
-        ### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
-        ### subscript: expr | [expr] ':' [expr]
-
-        import sys, time
-        c = sys.path[0]
-        x = time.time()
-        x = sys.modules['time'].time()
-        a = '01234'
-        c = a[0]
-        c = a[-1]
-        s = a[0:5]
-        s = a[:5]
-        s = a[0:]
-        s = a[:]
-        s = a[-5:]
-        s = a[:-1]
-        s = a[-4:-3]
-        # A rough test of SF bug 1333982.  https://bugs.python.org/issue1333982
-        # The testing here is fairly incomplete.
-        # Test cases should include: commas with 1 and 2 colons
-        d = {}
-        d[1] = 1
-        d[1,] = 2
-        d[1,2] = 3
-        d[1,2,3] = 4
-        L = list(d)
-        L.sort()
-        self.assertEquals(str(L), '[1, (1,), (1, 2), (1, 2, 3)]')
-
-    def testAtoms(self):
-        ### atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
-        ### dictmaker: test ':' test (',' test ':' test)* [',']
-
-        x = (1)
-        x = (1 or 2 or 3)
-        x = (1 or 2 or 3, 2, 3)
-
-        x = []
-        x = [1]
-        x = [1 or 2 or 3]
-        x = [1 or 2 or 3, 2, 3]
-        x = []
-
-        x = {}
-        x = {'one': 1}
-        x = {'one': 1,}
-        x = {'one' or 'two': 1 or 2}
-        x = {'one': 1, 'two': 2}
-        x = {'one': 1, 'two': 2,}
-        x = {'one': 1, 'two': 2, 'three': 3, 'four': 4, 'five': 5, 'six': 6}
-
-        x = `x`
-        x = `1 or 2 or 3`
-        self.assertEqual(`1,2`, '(1, 2)')
-
-        x = x
-        x = 'x'
-        x = 123
-
-    ### exprlist: expr (',' expr)* [',']
-    ### testlist: test (',' test)* [',']
-    # These have been exercised enough above
-
-    def testClassdef(self):
-        # 'class' NAME ['(' [testlist] ')'] ':' suite
-        class B: pass
-        class B2(): pass
-        class C1(B): pass
-        class C2(B): pass
-        class D(C1, C2, B): pass
-        class C:
-            def meth1(self): pass
-            def meth2(self, arg): pass
-            def meth3(self, a1, a2): pass
-        # decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
-        # decorators: decorator+
-        # decorated: decorators (classdef | funcdef)
-        def class_decorator(x):
-            x.decorated = True
-            return x
-        @class_decorator
-        class G:
-            pass
-        self.assertEqual(G.decorated, True)
-
-    def testListcomps(self):
-        # list comprehension tests
-        nums = [1, 2, 3, 4, 5]
-        strs = ["Apple", "Banana", "Coconut"]
-        spcs = ["  Apple", " Banana ", "Coco  nut  "]
-
-        self.assertEqual([s.strip() for s in spcs], ['Apple', 'Banana', 'Coco  nut'])
-        self.assertEqual([3 * x for x in nums], [3, 6, 9, 12, 15])
-        self.assertEqual([x for x in nums if x > 2], [3, 4, 5])
-        self.assertEqual([(i, s) for i in nums for s in strs],
-                         [(1, 'Apple'), (1, 'Banana'), (1, 'Coconut'),
-                          (2, 'Apple'), (2, 'Banana'), (2, 'Coconut'),
-                          (3, 'Apple'), (3, 'Banana'), (3, 'Coconut'),
-                          (4, 'Apple'), (4, 'Banana'), (4, 'Coconut'),
-                          (5, 'Apple'), (5, 'Banana'), (5, 'Coconut')])
-        self.assertEqual([(i, s) for i in nums for s in [f for f in strs if "n" in f]],
-                         [(1, 'Banana'), (1, 'Coconut'), (2, 'Banana'), (2, 'Coconut'),
-                          (3, 'Banana'), (3, 'Coconut'), (4, 'Banana'), (4, 'Coconut'),
-                          (5, 'Banana'), (5, 'Coconut')])
-        self.assertEqual([(lambda a:[a**i for i in range(a+1)])(j) for j in range(5)],
-                         [[1], [1, 1], [1, 2, 4], [1, 3, 9, 27], [1, 4, 16, 64, 256]])
-
-        def test_in_func(l):
-            return [None < x < 3 for x in l if x > 2]
-
-        self.assertEqual(test_in_func(nums), [False, False, False])
-
-        def test_nested_front():
-            self.assertEqual([[y for y in [x, x + 1]] for x in [1,3,5]],
-                             [[1, 2], [3, 4], [5, 6]])
-
-        test_nested_front()
-
-        check_syntax_error(self, "[i, s for i in nums for s in strs]")
-        check_syntax_error(self, "[x if y]")
-
-        suppliers = [
-          (1, "Boeing"),
-          (2, "Ford"),
-          (3, "Macdonalds")
-        ]
-
-        parts = [
-          (10, "Airliner"),
-          (20, "Engine"),
-          (30, "Cheeseburger")
-        ]
-
-        suppart = [
-          (1, 10), (1, 20), (2, 20), (3, 30)
-        ]
-
-        x = [
-          (sname, pname)
-            for (sno, sname) in suppliers
-              for (pno, pname) in parts
-                for (sp_sno, sp_pno) in suppart
-                  if sno == sp_sno and pno == sp_pno
-        ]
-
-        self.assertEqual(x, [('Boeing', 'Airliner'), ('Boeing', 'Engine'), ('Ford', 'Engine'),
-                             ('Macdonalds', 'Cheeseburger')])
-
-    def testGenexps(self):
-        # generator expression tests
-        g = ([x for x in range(10)] for x in range(1))
-        self.assertEqual(g.next(), [x for x in range(10)])
-        try:
-            g.next()
-            self.fail('should produce StopIteration exception')
-        except StopIteration:
-            pass
-
-        a = 1
-        try:
-            g = (a for d in a)
-            g.next()
-            self.fail('should produce TypeError')
-        except TypeError:
-            pass
-
-        self.assertEqual(list((x, y) for x in 'abcd' for y in 'abcd'), [(x, y) for x in 'abcd' for y in 'abcd'])
-        self.assertEqual(list((x, y) for x in 'ab' for y in 'xy'), [(x, y) for x in 'ab' for y in 'xy'])
-
-        a = [x for x in range(10)]
-        b = (x for x in (y for y in a))
-        self.assertEqual(sum(b), sum([x for x in range(10)]))
-
-        self.assertEqual(sum(x**2 for x in range(10)), sum([x**2 for x in range(10)]))
-        self.assertEqual(sum(x*x for x in range(10) if x%2), sum([x*x for x in range(10) if x%2]))
-        self.assertEqual(sum(x for x in (y for y in range(10))), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in (y for y in (z for z in range(10)))), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in [y for y in (z for z in range(10))]), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in (y for y in (z for z in range(10) if True)) if True), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in (y for y in (z for z in range(10) if True) if False) if True), 0)
-        check_syntax_error(self, "foo(x for x in range(10), 100)")
-        check_syntax_error(self, "foo(100, x for x in range(10))")
-
-    def testComprehensionSpecials(self):
-        # test for outmost iterable precomputation
-        x = 10; g = (i for i in range(x)); x = 5
-        self.assertEqual(len(list(g)), 10)
-
-        # This should hold, since we're only precomputing outmost iterable.
-        x = 10; t = False; g = ((i,j) for i in range(x) if t for j in range(x))
-        x = 5; t = True;
-        self.assertEqual([(i,j) for i in range(10) for j in range(5)], list(g))
-
-        # Grammar allows multiple adjacent 'if's in listcomps and genexps,
-        # even though it's silly. Make sure it works (ifelse broke this.)
-        self.assertEqual([ x for x in range(10) if x % 2 if x % 3 ], [1, 5, 7])
-        self.assertEqual(list(x for x in range(10) if x % 2 if x % 3), [1, 5, 7])
-
-        # verify unpacking single element tuples in listcomp/genexp.
-        self.assertEqual([x for x, in [(4,), (5,), (6,)]], [4, 5, 6])
-        self.assertEqual(list(x for x, in [(7,), (8,), (9,)]), [7, 8, 9])
-
-    def test_with_statement(self):
-        class manager(object):
-            def __enter__(self):
-                return (1, 2)
-            def __exit__(self, *args):
-                pass
-
-        with manager():
-            pass
-        with manager() as x:
-            pass
-        with manager() as (x, y):
-            pass
-        with manager(), manager():
-            pass
-        with manager() as x, manager() as y:
-            pass
-        with manager() as x, manager():
-            pass
-
-    def testIfElseExpr(self):
-        # Test ifelse expressions in various cases
-        def _checkeval(msg, ret):
-            "helper to check that evaluation of expressions is done correctly"
-            print x
-            return ret
-
-        self.assertEqual([ x() for x in lambda: True, lambda: False if x() ], [True])
-        self.assertEqual([ x() for x in (lambda: True, lambda: False) if x() ], [True])
-        self.assertEqual([ x(False) for x in (lambda x: False if x else True, lambda x: True if x else False) if x(False) ], [True])
-        self.assertEqual((5 if 1 else _checkeval("check 1", 0)), 5)
-        self.assertEqual((_checkeval("check 2", 0) if 0 else 5), 5)
-        self.assertEqual((5 and 6 if 0 else 1), 1)
-        self.assertEqual(((5 and 6) if 0 else 1), 1)
-        self.assertEqual((5 and (6 if 1 else 1)), 6)
-        self.assertEqual((0 or _checkeval("check 3", 2) if 0 else 3), 3)
-        self.assertEqual((1 or _checkeval("check 4", 2) if 1 else _checkeval("check 5", 3)), 1)
-        self.assertEqual((0 or 5 if 1 else _checkeval("check 6", 3)), 5)
-        self.assertEqual((not 5 if 1 else 1), False)
-        self.assertEqual((not 5 if 0 else 1), 1)
-        self.assertEqual((6 + 1 if 1 else 2), 7)
-        self.assertEqual((6 - 1 if 1 else 2), 5)
-        self.assertEqual((6 * 2 if 1 else 4), 12)
-        self.assertEqual((6 / 2 if 1 else 3), 3)
-        self.assertEqual((6 < 4 if 0 else 2), 2)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_lib2to3/data/py3_test_grammar.py b/Lib/test/test_lib2to3/data/py3_test_grammar.py
deleted file mode 100644
index 774851f5bd7e85..00000000000000
--- a/Lib/test/test_lib2to3/data/py3_test_grammar.py
+++ /dev/null
@@ -1,956 +0,0 @@
-# Python test set -- part 1, grammar.
-# This just tests whether the parser accepts them all.
-
-# NOTE: When you run this test as a script from the command line, you
-# get warnings about certain hex/oct constants.  Since those are
-# issued by the parser, you can't suppress them by adding a
-# filterwarnings() call to this module.  Therefore, to shut up the
-# regression test, the filterwarnings() call has been added to
-# regrtest.py.
-
-from test.support import check_syntax_error
-import unittest
-import sys
-# testing import *
-from sys import *
-
-class TokenTests(unittest.TestCase):
-
-    def testBackslash(self):
-        # Backslash means line continuation:
-        x = 1 \
-        + 1
-        self.assertEquals(x, 2, 'backslash for line continuation')
-
-        # Backslash does not means continuation in comments :\
-        x = 0
-        self.assertEquals(x, 0, 'backslash ending comment')
-
-    def testPlainIntegers(self):
-        self.assertEquals(type(000), type(0))
-        self.assertEquals(0xff, 255)
-        self.assertEquals(0o377, 255)
-        self.assertEquals(2147483647, 0o17777777777)
-        self.assertEquals(0b1001, 9)
-        # "0x" is not a valid literal
-        self.assertRaises(SyntaxError, eval, "0x")
-        from sys import maxsize
-        if maxsize == 2147483647:
-            self.assertEquals(-2147483647-1, -0o20000000000)
-            # XXX -2147483648
-            self.assert_(0o37777777777 > 0)
-            self.assert_(0xffffffff > 0)
-            self.assert_(0b1111111111111111111111111111111 > 0)
-            for s in ('2147483648', '0o40000000000', '0x100000000',
-                      '0b10000000000000000000000000000000'):
-                try:
-                    x = eval(s)
-                except OverflowError:
-                    self.fail("OverflowError on huge integer literal %r" % s)
-        elif maxsize == 9223372036854775807:
-            self.assertEquals(-9223372036854775807-1, -0o1000000000000000000000)
-            self.assert_(0o1777777777777777777777 > 0)
-            self.assert_(0xffffffffffffffff > 0)
-            self.assert_(0b11111111111111111111111111111111111111111111111111111111111111 > 0)
-            for s in '9223372036854775808', '0o2000000000000000000000', \
-                     '0x10000000000000000', \
-                     '0b100000000000000000000000000000000000000000000000000000000000000':
-                try:
-                    x = eval(s)
-                except OverflowError:
-                    self.fail("OverflowError on huge integer literal %r" % s)
-        else:
-            self.fail('Weird maxsize value %r' % maxsize)
-
-    def testLongIntegers(self):
-        x = 0
-        x = 0xffffffffffffffff
-        x = 0Xffffffffffffffff
-        x = 0o77777777777777777
-        x = 0O77777777777777777
-        x = 123456789012345678901234567890
-        x = 0b100000000000000000000000000000000000000000000000000000000000000000000
-        x = 0B111111111111111111111111111111111111111111111111111111111111111111111
-
-    def testUnderscoresInNumbers(self):
-        # Integers
-        x = 1_0
-        x = 123_456_7_89
-        x = 0xabc_123_4_5
-        x = 0X_abc_123
-        x = 0B11_01
-        x = 0b_11_01
-        x = 0o45_67
-        x = 0O_45_67
-
-        # Floats
-        x = 3_1.4
-        x = 03_1.4
-        x = 3_1.
-        x = .3_1
-        x = 3.1_4
-        x = 0_3.1_4
-        x = 3e1_4
-        x = 3_1e+4_1
-        x = 3_1E-4_1
-
-    def testFloats(self):
-        x = 3.14
-        x = 314.
-        x = 0.314
-        # XXX x = 000.314
-        x = .314
-        x = 3e14
-        x = 3E14
-        x = 3e-14
-        x = 3e+14
-        x = 3.e14
-        x = .3e14
-        x = 3.1e4
-
-    def testStringLiterals(self):
-        x = ''; y = ""; self.assert_(len(x) == 0 and x == y)
-        x = '\''; y = "'"; self.assert_(len(x) == 1 and x == y and ord(x) == 39)
-        x = '"'; y = "\""; self.assert_(len(x) == 1 and x == y and ord(x) == 34)
-        x = "doesn't \"shrink\" does it"
-        y = 'doesn\'t "shrink" does it'
-        self.assert_(len(x) == 24 and x == y)
-        x = "does \"shrink\" doesn't it"
-        y = 'does "shrink" doesn\'t it'
-        self.assert_(len(x) == 24 and x == y)
-        x = """
-The "quick"
-brown fox
-jumps over
-the 'lazy' dog.
-"""
-        y = '\nThe "quick"\nbrown fox\njumps over\nthe \'lazy\' dog.\n'
-        self.assertEquals(x, y)
-        y = '''
-The "quick"
-brown fox
-jumps over
-the 'lazy' dog.
-'''
-        self.assertEquals(x, y)
-        y = "\n\
-The \"quick\"\n\
-brown fox\n\
-jumps over\n\
-the 'lazy' dog.\n\
-"
-        self.assertEquals(x, y)
-        y = '\n\
-The \"quick\"\n\
-brown fox\n\
-jumps over\n\
-the \'lazy\' dog.\n\
-'
-        self.assertEquals(x, y)
-        x = rf"hello \{True}"; y = f"hello \\{True}"
-        self.assertEquals(x, y)
-
-    def testEllipsis(self):
-        x = ...
-        self.assert_(x is Ellipsis)
-        self.assertRaises(SyntaxError, eval, ".. .")
-
-class GrammarTests(unittest.TestCase):
-
-    # single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
-    # XXX can't test in a script -- this rule is only used when interactive
-
-    # file_input: (NEWLINE | stmt)* ENDMARKER
-    # Being tested as this very moment this very module
-
-    # expr_input: testlist NEWLINE
-    # XXX Hard to test -- used only in calls to input()
-
-    def testEvalInput(self):
-        # testlist ENDMARKER
-        x = eval('1, 0 or 1')
-
-    def testFuncdef(self):
-        ### [decorators] 'def' NAME parameters ['->' test] ':' suite
-        ### decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
-        ### decorators: decorator+
-        ### parameters: '(' [typedargslist] ')'
-        ### typedargslist: ((tfpdef ['=' test] ',')*
-        ###                ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] | '**' tfpdef)
-        ###                | tfpdef ['=' test] (',' tfpdef ['=' test])* [','])
-        ### tfpdef: NAME [':' test]
-        ### varargslist: ((vfpdef ['=' test] ',')*
-        ###              ('*' [vfpdef] (',' vfpdef ['=' test])*  [',' '**' vfpdef] | '**' vfpdef)
-        ###              | vfpdef ['=' test] (',' vfpdef ['=' test])* [','])
-        ### vfpdef: NAME
-        def f1(): pass
-        f1()
-        f1(*())
-        f1(*(), **{})
-        def f2(one_argument): pass
-        def f3(two, arguments): pass
-        self.assertEquals(f2.__code__.co_varnames, ('one_argument',))
-        self.assertEquals(f3.__code__.co_varnames, ('two', 'arguments'))
-        def a1(one_arg,): pass
-        def a2(two, args,): pass
-        def v0(*rest): pass
-        def v1(a, *rest): pass
-        def v2(a, b, *rest): pass
-
-        f1()
-        f2(1)
-        f2(1,)
-        f3(1, 2)
-        f3(1, 2,)
-        v0()
-        v0(1)
-        v0(1,)
-        v0(1,2)
-        v0(1,2,3,4,5,6,7,8,9,0)
-        v1(1)
-        v1(1,)
-        v1(1,2)
-        v1(1,2,3)
-        v1(1,2,3,4,5,6,7,8,9,0)
-        v2(1,2)
-        v2(1,2,3)
-        v2(1,2,3,4)
-        v2(1,2,3,4,5,6,7,8,9,0)
-
-        def d01(a=1): pass
-        d01()
-        d01(1)
-        d01(*(1,))
-        d01(**{'a':2})
-        def d11(a, b=1): pass
-        d11(1)
-        d11(1, 2)
-        d11(1, **{'b':2})
-        def d21(a, b, c=1): pass
-        d21(1, 2)
-        d21(1, 2, 3)
-        d21(*(1, 2, 3))
-        d21(1, *(2, 3))
-        d21(1, 2, *(3,))
-        d21(1, 2, **{'c':3})
-        def d02(a=1, b=2): pass
-        d02()
-        d02(1)
-        d02(1, 2)
-        d02(*(1, 2))
-        d02(1, *(2,))
-        d02(1, **{'b':2})
-        d02(**{'a': 1, 'b': 2})
-        def d12(a, b=1, c=2): pass
-        d12(1)
-        d12(1, 2)
-        d12(1, 2, 3)
-        def d22(a, b, c=1, d=2): pass
-        d22(1, 2)
-        d22(1, 2, 3)
-        d22(1, 2, 3, 4)
-        def d01v(a=1, *rest): pass
-        d01v()
-        d01v(1)
-        d01v(1, 2)
-        d01v(*(1, 2, 3, 4))
-        d01v(*(1,))
-        d01v(**{'a':2})
-        def d11v(a, b=1, *rest): pass
-        d11v(1)
-        d11v(1, 2)
-        d11v(1, 2, 3)
-        def d21v(a, b, c=1, *rest): pass
-        d21v(1, 2)
-        d21v(1, 2, 3)
-        d21v(1, 2, 3, 4)
-        d21v(*(1, 2, 3, 4))
-        d21v(1, 2, **{'c': 3})
-        def d02v(a=1, b=2, *rest): pass
-        d02v()
-        d02v(1)
-        d02v(1, 2)
-        d02v(1, 2, 3)
-        d02v(1, *(2, 3, 4))
-        d02v(**{'a': 1, 'b': 2})
-        def d12v(a, b=1, c=2, *rest): pass
-        d12v(1)
-        d12v(1, 2)
-        d12v(1, 2, 3)
-        d12v(1, 2, 3, 4)
-        d12v(*(1, 2, 3, 4))
-        d12v(1, 2, *(3, 4, 5))
-        d12v(1, *(2,), **{'c': 3})
-        def d22v(a, b, c=1, d=2, *rest): pass
-        d22v(1, 2)
-        d22v(1, 2, 3)
-        d22v(1, 2, 3, 4)
-        d22v(1, 2, 3, 4, 5)
-        d22v(*(1, 2, 3, 4))
-        d22v(1, 2, *(3, 4, 5))
-        d22v(1, *(2, 3), **{'d': 4})
-
-        # keyword argument type tests
-        try:
-            str('x', **{b'foo':1 })
-        except TypeError:
-            pass
-        else:
-            self.fail('Bytes should not work as keyword argument names')
-        # keyword only argument tests
-        def pos0key1(*, key): return key
-        pos0key1(key=100)
-        def pos2key2(p1, p2, *, k1, k2=100): return p1,p2,k1,k2
-        pos2key2(1, 2, k1=100)
-        pos2key2(1, 2, k1=100, k2=200)
-        pos2key2(1, 2, k2=100, k1=200)
-        def pos2key2dict(p1, p2, *, k1=100, k2, **kwarg): return p1,p2,k1,k2,kwarg
-        pos2key2dict(1,2,k2=100,tokwarg1=100,tokwarg2=200)
-        pos2key2dict(1,2,tokwarg1=100,tokwarg2=200, k2=100)
-
-        # keyword arguments after *arglist
-        def f(*args, **kwargs):
-            return args, kwargs
-        self.assertEquals(f(1, x=2, *[3, 4], y=5), ((1, 3, 4),
-                                                    {'x':2, 'y':5}))
-        self.assertRaises(SyntaxError, eval, "f(1, *(2,3), 4)")
-        self.assertRaises(SyntaxError, eval, "f(1, x=2, *(3,4), x=5)")
-
-        # argument annotation tests
-        def f(x) -> list: pass
-        self.assertEquals(f.__annotations__, {'return': list})
-        def f(x:int): pass
-        self.assertEquals(f.__annotations__, {'x': int})
-        def f(*x:str): pass
-        self.assertEquals(f.__annotations__, {'x': str})
-        def f(**x:float): pass
-        self.assertEquals(f.__annotations__, {'x': float})
-        def f(x, y:1+2): pass
-        self.assertEquals(f.__annotations__, {'y': 3})
-        def f(a, b:1, c:2, d): pass
-        self.assertEquals(f.__annotations__, {'b': 1, 'c': 2})
-        def f(a, b:1, c:2, d, e:3=4, f=5, *g:6): pass
-        self.assertEquals(f.__annotations__,
-                          {'b': 1, 'c': 2, 'e': 3, 'g': 6})
-        def f(a, b:1, c:2, d, e:3=4, f=5, *g:6, h:7, i=8, j:9=10,
-              **k:11) -> 12: pass
-        self.assertEquals(f.__annotations__,
-                          {'b': 1, 'c': 2, 'e': 3, 'g': 6, 'h': 7, 'j': 9,
-                           'k': 11, 'return': 12})
-        # Check for SF Bug #1697248 - mixing decorators and a return annotation
-        def null(x): return x
-        @null
-        def f(x) -> list: pass
-        self.assertEquals(f.__annotations__, {'return': list})
-
-        # test closures with a variety of oparg's
-        closure = 1
-        def f(): return closure
-        def f(x=1): return closure
-        def f(*, k=1): return closure
-        def f() -> int: return closure
-
-        # Check ast errors in *args and *kwargs
-        check_syntax_error(self, "f(*g(1=2))")
-        check_syntax_error(self, "f(**g(1=2))")
-
-    def testLambdef(self):
-        ### lambdef: 'lambda' [varargslist] ':' test
-        l1 = lambda : 0
-        self.assertEquals(l1(), 0)
-        l2 = lambda : a[d] # XXX just testing the expression
-        l3 = lambda : [2 < x for x in [-1, 3, 0]]
-        self.assertEquals(l3(), [0, 1, 0])
-        l4 = lambda x = lambda y = lambda z=1 : z : y() : x()
-        self.assertEquals(l4(), 1)
-        l5 = lambda x, y, z=2: x + y + z
-        self.assertEquals(l5(1, 2), 5)
-        self.assertEquals(l5(1, 2, 3), 6)
-        check_syntax_error(self, "lambda x: x = 2")
-        check_syntax_error(self, "lambda (None,): None")
-        l6 = lambda x, y, *, k=20: x+y+k
-        self.assertEquals(l6(1,2), 1+2+20)
-        self.assertEquals(l6(1,2,k=10), 1+2+10)
-
-
-    ### stmt: simple_stmt | compound_stmt
-    # Tested below
-
-    def testSimpleStmt(self):
-        ### simple_stmt: small_stmt (';' small_stmt)* [';']
-        x = 1; pass; del x
-        def foo():
-            # verify statements that end with semi-colons
-            x = 1; pass; del x;
-        foo()
-
-    ### small_stmt: expr_stmt | pass_stmt | del_stmt | flow_stmt | import_stmt | global_stmt | access_stmt
-    # Tested below
-
-    def testExprStmt(self):
-        # (exprlist '=')* exprlist
-        1
-        1, 2, 3
-        x = 1
-        x = 1, 2, 3
-        x = y = z = 1, 2, 3
-        x, y, z = 1, 2, 3
-        abc = a, b, c = x, y, z = xyz = 1, 2, (3, 4)
-
-        check_syntax_error(self, "x + 1 = 1")
-        check_syntax_error(self, "a + 1 = b + 2")
-
-    def testDelStmt(self):
-        # 'del' exprlist
-        abc = [1,2,3]
-        x, y, z = abc
-        xyz = x, y, z
-
-        del abc
-        del x, y, (z, xyz)
-
-    def testPassStmt(self):
-        # 'pass'
-        pass
-
-    # flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt
-    # Tested below
-
-    def testBreakStmt(self):
-        # 'break'
-        while 1: break
-
-    def testContinueStmt(self):
-        # 'continue'
-        i = 1
-        while i: i = 0; continue
-
-        msg = ""
-        while not msg:
-            msg = "ok"
-            try:
-                continue
-                msg = "continue failed to continue inside try"
-            except:
-                msg = "continue inside try called except block"
-        if msg != "ok":
-            self.fail(msg)
-
-        msg = ""
-        while not msg:
-            msg = "finally block not called"
-            try:
-                continue
-            finally:
-                msg = "ok"
-        if msg != "ok":
-            self.fail(msg)
-
-    def test_break_continue_loop(self):
-        # This test warrants an explanation. It is a test specifically for SF bugs
-        # #463359 and #462937. The bug is that a 'break' statement executed or
-        # exception raised inside a try/except inside a loop, *after* a continue
-        # statement has been executed in that loop, will cause the wrong number of
-        # arguments to be popped off the stack and the instruction pointer reset to
-        # a very small number (usually 0.) Because of this, the following test
-        # *must* written as a function, and the tracking vars *must* be function
-        # arguments with default values. Otherwise, the test will loop and loop.
-
-        def test_inner(extra_burning_oil = 1, count=0):
-            big_hippo = 2
-            while big_hippo:
-                count += 1
-                try:
-                    if extra_burning_oil and big_hippo == 1:
-                        extra_burning_oil -= 1
-                        break
-                    big_hippo -= 1
-                    continue
-                except:
-                    raise
-            if count > 2 or big_hippo != 1:
-                self.fail("continue then break in try/except in loop broken!")
-        test_inner()
-
-    def testReturn(self):
-        # 'return' [testlist_star_expr]
-        def g1(): return
-        def g2(): return 1
-        return_list = [2, 3]
-        def g3(): return 1, *return_list
-        g1()
-        x = g2()
-        x3 = g3()
-        check_syntax_error(self, "class foo:return 1")
-
-    def testYield(self):
-        # 'yield' [yield_arg]
-        def g1(): yield 1
-        yield_list = [2, 3]
-        def g2(): yield 1, *yield_list
-        def g3(): yield from iter(yield_list)
-        x1 = g1()
-        x2 = g2()
-        x3 = g3()
-        check_syntax_error(self, "class foo:yield 1")
-        check_syntax_error(self, "def g4(): yield from *a")
-
-    def testRaise(self):
-        # 'raise' test [',' test]
-        try: raise RuntimeError('just testing')
-        except RuntimeError: pass
-        try: raise KeyboardInterrupt
-        except KeyboardInterrupt: pass
-
-    def testImport(self):
-        # 'import' dotted_as_names
-        import sys
-        import time, sys
-        # 'from' dotted_name 'import' ('*' | '(' import_as_names ')' | import_as_names)
-        from time import time
-        from time import (time)
-        # not testable inside a function, but already done at top of the module
-        # from sys import *
-        from sys import path, argv
-        from sys import (path, argv)
-        from sys import (path, argv,)
-
-    def testGlobal(self):
-        # 'global' NAME (',' NAME)*
-        global a
-        global a, b
-        global one, two, three, four, five, six, seven, eight, nine, ten
-
-    def testNonlocal(self):
-        # 'nonlocal' NAME (',' NAME)*
-        x = 0
-        y = 0
-        def f():
-            nonlocal x
-            nonlocal x, y
-
-    def testAssert(self):
-        # assert_stmt: 'assert' test [',' test]
-        assert 1
-        assert 1, 1
-        assert lambda x:x
-        assert 1, lambda x:x+1
-        try:
-            assert 0, "msg"
-        except AssertionError as e:
-            self.assertEquals(e.args[0], "msg")
-        else:
-            if __debug__:
-                self.fail("AssertionError not raised by assert 0")
-
-    ### compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef
-    # Tested below
-
-    def testIf(self):
-        # 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
-        if 1: pass
-        if 1: pass
-        else: pass
-        if 0: pass
-        elif 0: pass
-        if 0: pass
-        elif 0: pass
-        elif 0: pass
-        elif 0: pass
-        else: pass
-
-    def testWhile(self):
-        # 'while' test ':' suite ['else' ':' suite]
-        while 0: pass
-        while 0: pass
-        else: pass
-
-        # Issue1920: "while 0" is optimized away,
-        # ensure that the "else" clause is still present.
-        x = 0
-        while 0:
-            x = 1
-        else:
-            x = 2
-        self.assertEquals(x, 2)
-
-    def testFor(self):
-        # 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite]
-        for i in 1, 2, 3: pass
-        for i, j, k in (): pass
-        else: pass
-        class Squares:
-            def __init__(self, max):
-                self.max = max
-                self.sofar = []
-            def __len__(self): return len(self.sofar)
-            def __getitem__(self, i):
-                if not 0 <= i < self.max: raise IndexError
-                n = len(self.sofar)
-                while n <= i:
-                    self.sofar.append(n*n)
-                    n = n+1
-                return self.sofar[i]
-        n = 0
-        for x in Squares(10): n = n+x
-        if n != 285:
-            self.fail('for over growing sequence')
-
-        result = []
-        for x, in [(1,), (2,), (3,)]:
-            result.append(x)
-        self.assertEqual(result, [1, 2, 3])
-
-    def testTry(self):
-        ### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
-        ###         | 'try' ':' suite 'finally' ':' suite
-        ### except_clause: 'except' [expr ['as' expr]]
-        try:
-            1/0
-        except ZeroDivisionError:
-            pass
-        else:
-            pass
-        try: 1/0
-        except EOFError: pass
-        except TypeError as msg: pass
-        except RuntimeError as msg: pass
-        except: pass
-        else: pass
-        try: 1/0
-        except (EOFError, TypeError, ZeroDivisionError): pass
-        try: 1/0
-        except (EOFError, TypeError, ZeroDivisionError) as msg: pass
-        try: pass
-        finally: pass
-
-    def testSuite(self):
-        # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
-        if 1: pass
-        if 1:
-            pass
-        if 1:
-            #
-            #
-            #
-            pass
-            pass
-            #
-            pass
-            #
-
-    def testTest(self):
-        ### and_test ('or' and_test)*
-        ### and_test: not_test ('and' not_test)*
-        ### not_test: 'not' not_test | comparison
-        if not 1: pass
-        if 1 and 1: pass
-        if 1 or 1: pass
-        if not not not 1: pass
-        if not 1 and 1 and 1: pass
-        if 1 and 1 or 1 and 1 and 1 or not 1 and 1: pass
-
-    def testComparison(self):
-        ### comparison: expr (comp_op expr)*
-        ### comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is'|'is' 'not'
-        if 1: pass
-        x = (1 == 1)
-        if 1 == 1: pass
-        if 1 != 1: pass
-        if 1 < 1: pass
-        if 1 > 1: pass
-        if 1 <= 1: pass
-        if 1 >= 1: pass
-        if 1 is 1: pass
-        if 1 is not 1: pass
-        if 1 in (): pass
-        if 1 not in (): pass
-        if 1 < 1 > 1 == 1 >= 1 <= 1 != 1 in 1 not in 1 is 1 is not 1: pass
-
-    def testBinaryMaskOps(self):
-        x = 1 & 1
-        x = 1 ^ 1
-        x = 1 | 1
-
-    def testShiftOps(self):
-        x = 1 << 1
-        x = 1 >> 1
-        x = 1 << 1 >> 1
-
-    def testAdditiveOps(self):
-        x = 1
-        x = 1 + 1
-        x = 1 - 1 - 1
-        x = 1 - 1 + 1 - 1 + 1
-
-    def testMultiplicativeOps(self):
-        x = 1 * 1
-        x = 1 / 1
-        x = 1 % 1
-        x = 1 / 1 * 1 % 1
-
-    def testUnaryOps(self):
-        x = +1
-        x = -1
-        x = ~1
-        x = ~1 ^ 1 & 1 | 1 & 1 ^ -1
-        x = -1*1/1 + 1*1 - ---1*1
-
-    def testSelectors(self):
-        ### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
-        ### subscript: expr | [expr] ':' [expr]
-
-        import sys, time
-        c = sys.path[0]
-        x = time.time()
-        x = sys.modules['time'].time()
-        a = '01234'
-        c = a[0]
-        c = a[-1]
-        s = a[0:5]
-        s = a[:5]
-        s = a[0:]
-        s = a[:]
-        s = a[-5:]
-        s = a[:-1]
-        s = a[-4:-3]
-        # A rough test of SF bug 1333982.  https://bugs.python.org/issue1333982
-        # The testing here is fairly incomplete.
-        # Test cases should include: commas with 1 and 2 colons
-        d = {}
-        d[1] = 1
-        d[1,] = 2
-        d[1,2] = 3
-        d[1,2,3] = 4
-        L = list(d)
-        L.sort(key=lambda x: x if isinstance(x, tuple) else ())
-        self.assertEquals(str(L), '[1, (1,), (1, 2), (1, 2, 3)]')
-
-    def testAtoms(self):
-        ### atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictsetmaker] '}' | NAME | NUMBER | STRING
-        ### dictsetmaker: (test ':' test (',' test ':' test)* [',']) | (test (',' test)* [','])
-
-        x = (1)
-        x = (1 or 2 or 3)
-        x = (1 or 2 or 3, 2, 3)
-
-        x = []
-        x = [1]
-        x = [1 or 2 or 3]
-        x = [1 or 2 or 3, 2, 3]
-        x = []
-
-        x = {}
-        x = {'one': 1}
-        x = {'one': 1,}
-        x = {'one' or 'two': 1 or 2}
-        x = {'one': 1, 'two': 2}
-        x = {'one': 1, 'two': 2,}
-        x = {'one': 1, 'two': 2, 'three': 3, 'four': 4, 'five': 5, 'six': 6}
-
-        x = {'one'}
-        x = {'one', 1,}
-        x = {'one', 'two', 'three'}
-        x = {2, 3, 4,}
-
-        x = x
-        x = 'x'
-        x = 123
-
-    ### exprlist: expr (',' expr)* [',']
-    ### testlist: test (',' test)* [',']
-    # These have been exercised enough above
-
-    def testClassdef(self):
-        # 'class' NAME ['(' [testlist] ')'] ':' suite
-        class B: pass
-        class B2(): pass
-        class C1(B): pass
-        class C2(B): pass
-        class D(C1, C2, B): pass
-        class C:
-            def meth1(self): pass
-            def meth2(self, arg): pass
-            def meth3(self, a1, a2): pass
-
-        # decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
-        # decorators: decorator+
-        # decorated: decorators (classdef | funcdef)
-        def class_decorator(x): return x
-        @class_decorator
-        class G: pass
-
-    def testDictcomps(self):
-        # dictorsetmaker: ( (test ':' test (comp_for |
-        #                                   (',' test ':' test)* [','])) |
-        #                   (test (comp_for | (',' test)* [','])) )
-        nums = [1, 2, 3]
-        self.assertEqual({i:i+1 for i in nums}, {1: 2, 2: 3, 3: 4})
-
-    def testListcomps(self):
-        # list comprehension tests
-        nums = [1, 2, 3, 4, 5]
-        strs = ["Apple", "Banana", "Coconut"]
-        spcs = ["  Apple", " Banana ", "Coco  nut  "]
-
-        self.assertEqual([s.strip() for s in spcs], ['Apple', 'Banana', 'Coco  nut'])
-        self.assertEqual([3 * x for x in nums], [3, 6, 9, 12, 15])
-        self.assertEqual([x for x in nums if x > 2], [3, 4, 5])
-        self.assertEqual([(i, s) for i in nums for s in strs],
-                         [(1, 'Apple'), (1, 'Banana'), (1, 'Coconut'),
-                          (2, 'Apple'), (2, 'Banana'), (2, 'Coconut'),
-                          (3, 'Apple'), (3, 'Banana'), (3, 'Coconut'),
-                          (4, 'Apple'), (4, 'Banana'), (4, 'Coconut'),
-                          (5, 'Apple'), (5, 'Banana'), (5, 'Coconut')])
-        self.assertEqual([(i, s) for i in nums for s in [f for f in strs if "n" in f]],
-                         [(1, 'Banana'), (1, 'Coconut'), (2, 'Banana'), (2, 'Coconut'),
-                          (3, 'Banana'), (3, 'Coconut'), (4, 'Banana'), (4, 'Coconut'),
-                          (5, 'Banana'), (5, 'Coconut')])
-        self.assertEqual([(lambda a:[a**i for i in range(a+1)])(j) for j in range(5)],
-                         [[1], [1, 1], [1, 2, 4], [1, 3, 9, 27], [1, 4, 16, 64, 256]])
-
-        def test_in_func(l):
-            return [0 < x < 3 for x in l if x > 2]
-
-        self.assertEqual(test_in_func(nums), [False, False, False])
-
-        def test_nested_front():
-            self.assertEqual([[y for y in [x, x + 1]] for x in [1,3,5]],
-                             [[1, 2], [3, 4], [5, 6]])
-
-        test_nested_front()
-
-        check_syntax_error(self, "[i, s for i in nums for s in strs]")
-        check_syntax_error(self, "[x if y]")
-
-        suppliers = [
-          (1, "Boeing"),
-          (2, "Ford"),
-          (3, "Macdonalds")
-        ]
-
-        parts = [
-          (10, "Airliner"),
-          (20, "Engine"),
-          (30, "Cheeseburger")
-        ]
-
-        suppart = [
-          (1, 10), (1, 20), (2, 20), (3, 30)
-        ]
-
-        x = [
-          (sname, pname)
-            for (sno, sname) in suppliers
-              for (pno, pname) in parts
-                for (sp_sno, sp_pno) in suppart
-                  if sno == sp_sno and pno == sp_pno
-        ]
-
-        self.assertEqual(x, [('Boeing', 'Airliner'), ('Boeing', 'Engine'), ('Ford', 'Engine'),
-                             ('Macdonalds', 'Cheeseburger')])
-
-    def testGenexps(self):
-        # generator expression tests
-        g = ([x for x in range(10)] for x in range(1))
-        self.assertEqual(next(g), [x for x in range(10)])
-        try:
-            next(g)
-            self.fail('should produce StopIteration exception')
-        except StopIteration:
-            pass
-
-        a = 1
-        try:
-            g = (a for d in a)
-            next(g)
-            self.fail('should produce TypeError')
-        except TypeError:
-            pass
-
-        self.assertEqual(list((x, y) for x in 'abcd' for y in 'abcd'), [(x, y) for x in 'abcd' for y in 'abcd'])
-        self.assertEqual(list((x, y) for x in 'ab' for y in 'xy'), [(x, y) for x in 'ab' for y in 'xy'])
-
-        a = [x for x in range(10)]
-        b = (x for x in (y for y in a))
-        self.assertEqual(sum(b), sum([x for x in range(10)]))
-
-        self.assertEqual(sum(x**2 for x in range(10)), sum([x**2 for x in range(10)]))
-        self.assertEqual(sum(x*x for x in range(10) if x%2), sum([x*x for x in range(10) if x%2]))
-        self.assertEqual(sum(x for x in (y for y in range(10))), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in (y for y in (z for z in range(10)))), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in [y for y in (z for z in range(10))]), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in (y for y in (z for z in range(10) if True)) if True), sum([x for x in range(10)]))
-        self.assertEqual(sum(x for x in (y for y in (z for z in range(10) if True) if False) if True), 0)
-        check_syntax_error(self, "foo(x for x in range(10), 100)")
-        check_syntax_error(self, "foo(100, x for x in range(10))")
-
-    def testComprehensionSpecials(self):
-        # test for outmost iterable precomputation
-        x = 10; g = (i for i in range(x)); x = 5
-        self.assertEqual(len(list(g)), 10)
-
-        # This should hold, since we're only precomputing outmost iterable.
-        x = 10; t = False; g = ((i,j) for i in range(x) if t for j in range(x))
-        x = 5; t = True;
-        self.assertEqual([(i,j) for i in range(10) for j in range(5)], list(g))
-
-        # Grammar allows multiple adjacent 'if's in listcomps and genexps,
-        # even though it's silly. Make sure it works (ifelse broke this.)
-        self.assertEqual([ x for x in range(10) if x % 2 if x % 3 ], [1, 5, 7])
-        self.assertEqual(list(x for x in range(10) if x % 2 if x % 3), [1, 5, 7])
-
-        # verify unpacking single element tuples in listcomp/genexp.
-        self.assertEqual([x for x, in [(4,), (5,), (6,)]], [4, 5, 6])
-        self.assertEqual(list(x for x, in [(7,), (8,), (9,)]), [7, 8, 9])
-
-    def test_with_statement(self):
-        class manager(object):
-            def __enter__(self):
-                return (1, 2)
-            def __exit__(self, *args):
-                pass
-
-        with manager():
-            pass
-        with manager() as x:
-            pass
-        with manager() as (x, y):
-            pass
-        with manager(), manager():
-            pass
-        with manager() as x, manager() as y:
-            pass
-        with manager() as x, manager():
-            pass
-
-    def testIfElseExpr(self):
-        # Test ifelse expressions in various cases
-        def _checkeval(msg, ret):
-            "helper to check that evaluation of expressions is done correctly"
-            print(x)
-            return ret
-
-        # the next line is not allowed anymore
-        #self.assertEqual([ x() for x in lambda: True, lambda: False if x() ], [True])
-        self.assertEqual([ x() for x in (lambda: True, lambda: False) if x() ], [True])
-        self.assertEqual([ x(False) for x in (lambda x: False if x else True, lambda x: True if x else False) if x(False) ], [True])
-        self.assertEqual((5 if 1 else _checkeval("check 1", 0)), 5)
-        self.assertEqual((_checkeval("check 2", 0) if 0 else 5), 5)
-        self.assertEqual((5 and 6 if 0 else 1), 1)
-        self.assertEqual(((5 and 6) if 0 else 1), 1)
-        self.assertEqual((5 and (6 if 1 else 1)), 6)
-        self.assertEqual((0 or _checkeval("check 3", 2) if 0 else 3), 3)
-        self.assertEqual((1 or _checkeval("check 4", 2) if 1 else _checkeval("check 5", 3)), 1)
-        self.assertEqual((0 or 5 if 1 else _checkeval("check 6", 3)), 5)
-        self.assertEqual((not 5 if 1 else 1), False)
-        self.assertEqual((not 5 if 0 else 1), 1)
-        self.assertEqual((6 + 1 if 1 else 2), 7)
-        self.assertEqual((6 - 1 if 1 else 2), 5)
-        self.assertEqual((6 * 2 if 1 else 4), 12)
-        self.assertEqual((6 / 2 if 1 else 3), 3)
-        self.assertEqual((6 < 4 if 0 else 2), 2)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_lib2to3/pytree_idempotency.py b/Lib/test/test_lib2to3/pytree_idempotency.py
deleted file mode 100755
index eb2e2aa02ae0ed..00000000000000
--- a/Lib/test/test_lib2to3/pytree_idempotency.py
+++ /dev/null
@@ -1,94 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Main program for testing the infrastructure."""
-
-from __future__ import print_function
-
-__author__ = "Guido van Rossum <guido@python.org>"
-
-# Support imports (need to be imported first)
-from . import support
-
-# Python imports
-import os
-import sys
-import logging
-
-# Local imports
-from lib2to3 import pytree
-from lib2to3 import pgen2
-from lib2to3.pgen2 import driver
-
-logging.basicConfig()
-
-def main():
-    gr = driver.load_grammar("Grammar.txt")
-    dr = driver.Driver(gr, convert=pytree.convert)
-
-    fn = "example.py"
-    tree = dr.parse_file(fn, debug=True)
-    if not diff(fn, tree):
-        print("No diffs.")
-    if not sys.argv[1:]:
-        return # Pass a dummy argument to run the complete test suite below
-
-    problems = []
-
-    # Process every imported module
-    for name in sys.modules:
-        mod = sys.modules[name]
-        if mod is None or not hasattr(mod, "__file__"):
-            continue
-        fn = mod.__file__
-        if fn.endswith(".pyc"):
-            fn = fn[:-1]
-        if not fn.endswith(".py"):
-            continue
-        print("Parsing", fn, file=sys.stderr)
-        tree = dr.parse_file(fn, debug=True)
-        if diff(fn, tree):
-            problems.append(fn)
-
-    # Process every single module on sys.path (but not in packages)
-    for dir in sys.path:
-        try:
-            names = os.listdir(dir)
-        except OSError:
-            continue
-        print("Scanning", dir, "...", file=sys.stderr)
-        for name in names:
-            if not name.endswith(".py"):
-                continue
-            print("Parsing", name, file=sys.stderr)
-            fn = os.path.join(dir, name)
-            try:
-                tree = dr.parse_file(fn, debug=True)
-            except pgen2.parse.ParseError as err:
-                print("ParseError:", err)
-            else:
-                if diff(fn, tree):
-                    problems.append(fn)
-
-    # Show summary of problem files
-    if not problems:
-        print("No problems.  Congratulations!")
-    else:
-        print("Problems in following files:")
-        for fn in problems:
-            print("***", fn)
-
-def diff(fn, tree):
-    f = open("@", "w")
-    try:
-        f.write(str(tree))
-    finally:
-        f.close()
-    try:
-        return os.system("diff -u %s @" % fn)
-    finally:
-        os.remove("@")
-
-if __name__ == "__main__":
-    main()
diff --git a/Lib/test/test_lib2to3/support.py b/Lib/test/test_lib2to3/support.py
deleted file mode 100644
index 9e56273e95992b..00000000000000
--- a/Lib/test/test_lib2to3/support.py
+++ /dev/null
@@ -1,69 +0,0 @@
-"""Support code for test_*.py files"""
-# Author: Collin Winter
-
-# Python imports
-import unittest
-import os
-import os.path
-from textwrap import dedent
-
-# Local imports
-import lib2to3
-from lib2to3 import pytree, refactor
-from lib2to3.pgen2 import driver as pgen2_driver
-
-lib2to3_dir = os.path.dirname(lib2to3.__file__)
-test_dir = os.path.dirname(__file__)
-proj_dir = os.path.normpath(os.path.join(test_dir, ".."))
-grammar_path = os.path.join(lib2to3_dir, "Grammar.txt")
-grammar = pgen2_driver.load_grammar(grammar_path)
-grammar_no_print_statement = pgen2_driver.load_grammar(grammar_path)
-del grammar_no_print_statement.keywords["print"]
-driver = pgen2_driver.Driver(grammar, convert=pytree.convert)
-driver_no_print_statement = pgen2_driver.Driver(
-    grammar_no_print_statement,
-    convert=pytree.convert
-)
-
-def parse_string(string):
-    return driver.parse_string(reformat(string), debug=True)
-
-def run_all_tests(test_mod=None, tests=None):
-    if tests is None:
-        tests = unittest.TestLoader().loadTestsFromModule(test_mod)
-    unittest.TextTestRunner(verbosity=2).run(tests)
-
-def reformat(string):
-    return dedent(string) + "\n\n"
-
-def get_refactorer(fixer_pkg="lib2to3", fixers=None, options=None):
-    """
-    A convenience function for creating a RefactoringTool for tests.
-
-    fixers is a list of fixers for the RefactoringTool to use. By default
-    "lib2to3.fixes.*" is used. options is an optional dictionary of options to
-    be passed to the RefactoringTool.
-    """
-    if fixers is not None:
-        fixers = [fixer_pkg + ".fixes.fix_" + fix for fix in fixers]
-    else:
-        fixers = refactor.get_fixers_from_package(fixer_pkg + ".fixes")
-    options = options or {}
-    return refactor.RefactoringTool(fixers, options, explicit=True)
-
-def _all_project_files(root, files):
-    for dirpath, dirnames, filenames in os.walk(root):
-        for filename in filenames:
-            if not filename.endswith(".py"):
-                continue
-            files.append(os.path.join(dirpath, filename))
-
-def all_project_files():
-    files = []
-    _all_project_files(lib2to3_dir, files)
-    _all_project_files(test_dir, files)
-    # Sort to get more reproducible tests
-    files.sort()
-    return files
-
-TestCase = unittest.TestCase
diff --git a/Lib/test/test_lib2to3/test_all_fixers.py b/Lib/test/test_lib2to3/test_all_fixers.py
deleted file mode 100644
index d0fca7072482cb..00000000000000
--- a/Lib/test/test_lib2to3/test_all_fixers.py
+++ /dev/null
@@ -1,41 +0,0 @@
-"""Tests that run all fixer modules over an input stream.
-
-This has been broken out into its own test module because of its
-running time.
-"""
-# Author: Collin Winter
-
-# Python imports
-import os.path
-import test.support
-import unittest
-
-# Local imports
-from . import support
-
-
-@test.support.requires_resource('cpu')
-class Test_all(support.TestCase):
-
-    def setUp(self):
-        self.refactor = support.get_refactorer()
-
-    def refactor_file(self, filepath):
-        if test.support.verbose:
-            print(f"Refactor file: {filepath}")
-        if os.path.basename(filepath) == 'infinite_recursion.py':
-            # bpo-46542: Processing infinite_recursion.py can crash Python
-            # if Python is built in debug mode: lower the recursion limit
-            # to prevent a crash.
-            with test.support.infinite_recursion(150):
-                self.refactor.refactor_file(filepath)
-        else:
-            self.refactor.refactor_file(filepath)
-
-    def test_all_project_files(self):
-        for filepath in support.all_project_files():
-            with self.subTest(filepath=filepath):
-                self.refactor_file(filepath)
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_lib2to3/test_fixers.py b/Lib/test/test_lib2to3/test_fixers.py
deleted file mode 100644
index 68efeee7abb4d5..00000000000000
--- a/Lib/test/test_lib2to3/test_fixers.py
+++ /dev/null
@@ -1,4649 +0,0 @@
-""" Test suite for the fixer modules """
-
-# Python imports
-import os
-from itertools import chain
-from operator import itemgetter
-
-# Local imports
-from lib2to3 import pygram, fixer_util
-from test.test_lib2to3 import support
-
-
-class FixerTestCase(support.TestCase):
-
-    # Other test cases can subclass this class and replace "fixer_pkg" with
-    # their own.
-    def setUp(self, fix_list=None, fixer_pkg="lib2to3", options=None):
-        if fix_list is None:
-            fix_list = [self.fixer]
-        self.refactor = support.get_refactorer(fixer_pkg, fix_list, options)
-        self.fixer_log = []
-        self.filename = "<string>"
-
-        for fixer in chain(self.refactor.pre_order,
-                           self.refactor.post_order):
-            fixer.log = self.fixer_log
-
-    def _check(self, before, after):
-        before = support.reformat(before)
-        after = support.reformat(after)
-        tree = self.refactor.refactor_string(before, self.filename)
-        self.assertEqual(after, str(tree))
-        return tree
-
-    def check(self, before, after, ignore_warnings=False):
-        tree = self._check(before, after)
-        self.assertTrue(tree.was_changed)
-        if not ignore_warnings:
-            self.assertEqual(self.fixer_log, [])
-
-    def warns(self, before, after, message, unchanged=False):
-        tree = self._check(before, after)
-        self.assertIn(message, "".join(self.fixer_log))
-        if not unchanged:
-            self.assertTrue(tree.was_changed)
-
-    def warns_unchanged(self, before, message):
-        self.warns(before, before, message, unchanged=True)
-
-    def unchanged(self, before, ignore_warnings=False):
-        self._check(before, before)
-        if not ignore_warnings:
-            self.assertEqual(self.fixer_log, [])
-
-    def assert_runs_after(self, *names):
-        fixes = [self.fixer]
-        fixes.extend(names)
-        r = support.get_refactorer("lib2to3", fixes)
-        (pre, post) = r.get_fixers()
-        n = "fix_" + self.fixer
-        if post and post[-1].__class__.__module__.endswith(n):
-            # We're the last fixer to run
-            return
-        if pre and pre[-1].__class__.__module__.endswith(n) and not post:
-            # We're the last in pre and post is empty
-            return
-        self.fail("Fixer run order (%s) is incorrect; %s should be last."\
-               %(", ".join([x.__class__.__module__ for x in (pre+post)]), n))
-
-class Test_ne(FixerTestCase):
-    fixer = "ne"
-
-    def test_basic(self):
-        b = """if x <> y:
-            pass"""
-
-        a = """if x != y:
-            pass"""
-        self.check(b, a)
-
-    def test_no_spaces(self):
-        b = """if x<>y:
-            pass"""
-
-        a = """if x!=y:
-            pass"""
-        self.check(b, a)
-
-    def test_chained(self):
-        b = """if x<>y<>z:
-            pass"""
-
-        a = """if x!=y!=z:
-            pass"""
-        self.check(b, a)
-
-class Test_has_key(FixerTestCase):
-    fixer = "has_key"
-
-    def test_1(self):
-        b = """x = d.has_key("x") or d.has_key("y")"""
-        a = """x = "x" in d or "y" in d"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """x = a.b.c.d.has_key("x") ** 3"""
-        a = """x = ("x" in a.b.c.d) ** 3"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """x = a.b.has_key(1 + 2).__repr__()"""
-        a = """x = (1 + 2 in a.b).__repr__()"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """x = a.b.has_key(1 + 2).__repr__() ** -3 ** 4"""
-        a = """x = (1 + 2 in a.b).__repr__() ** -3 ** 4"""
-        self.check(b, a)
-
-    def test_5(self):
-        b = """x = a.has_key(f or g)"""
-        a = """x = (f or g) in a"""
-        self.check(b, a)
-
-    def test_6(self):
-        b = """x = a + b.has_key(c)"""
-        a = """x = a + (c in b)"""
-        self.check(b, a)
-
-    def test_7(self):
-        b = """x = a.has_key(lambda: 12)"""
-        a = """x = (lambda: 12) in a"""
-        self.check(b, a)
-
-    def test_8(self):
-        b = """x = a.has_key(a for a in b)"""
-        a = """x = (a for a in b) in a"""
-        self.check(b, a)
-
-    def test_9(self):
-        b = """if not a.has_key(b): pass"""
-        a = """if b not in a: pass"""
-        self.check(b, a)
-
-    def test_10(self):
-        b = """if not a.has_key(b).__repr__(): pass"""
-        a = """if not (b in a).__repr__(): pass"""
-        self.check(b, a)
-
-    def test_11(self):
-        b = """if not a.has_key(b) ** 2: pass"""
-        a = """if not (b in a) ** 2: pass"""
-        self.check(b, a)
-
-class Test_apply(FixerTestCase):
-    fixer = "apply"
-
-    def test_1(self):
-        b = """x = apply(f, g + h)"""
-        a = """x = f(*g + h)"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """y = apply(f, g, h)"""
-        a = """y = f(*g, **h)"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """z = apply(fs[0], g or h, h or g)"""
-        a = """z = fs[0](*g or h, **h or g)"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """apply(f, (x, y) + t)"""
-        a = """f(*(x, y) + t)"""
-        self.check(b, a)
-
-    def test_5(self):
-        b = """apply(f, args,)"""
-        a = """f(*args)"""
-        self.check(b, a)
-
-    def test_6(self):
-        b = """apply(f, args, kwds,)"""
-        a = """f(*args, **kwds)"""
-        self.check(b, a)
-
-    # Test that complex functions are parenthesized
-
-    def test_complex_1(self):
-        b = """x = apply(f+g, args)"""
-        a = """x = (f+g)(*args)"""
-        self.check(b, a)
-
-    def test_complex_2(self):
-        b = """x = apply(f*g, args)"""
-        a = """x = (f*g)(*args)"""
-        self.check(b, a)
-
-    def test_complex_3(self):
-        b = """x = apply(f**g, args)"""
-        a = """x = (f**g)(*args)"""
-        self.check(b, a)
-
-    # But dotted names etc. not
-
-    def test_dotted_name(self):
-        b = """x = apply(f.g, args)"""
-        a = """x = f.g(*args)"""
-        self.check(b, a)
-
-    def test_subscript(self):
-        b = """x = apply(f[x], args)"""
-        a = """x = f[x](*args)"""
-        self.check(b, a)
-
-    def test_call(self):
-        b = """x = apply(f(), args)"""
-        a = """x = f()(*args)"""
-        self.check(b, a)
-
-    # Extreme case
-    def test_extreme(self):
-        b = """x = apply(a.b.c.d.e.f, args, kwds)"""
-        a = """x = a.b.c.d.e.f(*args, **kwds)"""
-        self.check(b, a)
-
-    # XXX Comments in weird places still get lost
-    def test_weird_comments(self):
-        b = """apply(   # foo
-          f, # bar
-          args)"""
-        a = """f(*args)"""
-        self.check(b, a)
-
-    # These should *not* be touched
-
-    def test_unchanged_1(self):
-        s = """apply()"""
-        self.unchanged(s)
-
-    def test_unchanged_2(self):
-        s = """apply(f)"""
-        self.unchanged(s)
-
-    def test_unchanged_3(self):
-        s = """apply(f,)"""
-        self.unchanged(s)
-
-    def test_unchanged_4(self):
-        s = """apply(f, args, kwds, extras)"""
-        self.unchanged(s)
-
-    def test_unchanged_5(self):
-        s = """apply(f, *args, **kwds)"""
-        self.unchanged(s)
-
-    def test_unchanged_6(self):
-        s = """apply(f, *args)"""
-        self.unchanged(s)
-
-    def test_unchanged_6b(self):
-        s = """apply(f, **kwds)"""
-        self.unchanged(s)
-
-    def test_unchanged_7(self):
-        s = """apply(func=f, args=args, kwds=kwds)"""
-        self.unchanged(s)
-
-    def test_unchanged_8(self):
-        s = """apply(f, args=args, kwds=kwds)"""
-        self.unchanged(s)
-
-    def test_unchanged_9(self):
-        s = """apply(f, args, kwds=kwds)"""
-        self.unchanged(s)
-
-    def test_space_1(self):
-        a = """apply(  f,  args,   kwds)"""
-        b = """f(*args, **kwds)"""
-        self.check(a, b)
-
-    def test_space_2(self):
-        a = """apply(  f  ,args,kwds   )"""
-        b = """f(*args, **kwds)"""
-        self.check(a, b)
-
-class Test_reload(FixerTestCase):
-    fixer = "reload"
-
-    def test(self):
-        b = """reload(a)"""
-        a = """import importlib\nimportlib.reload(a)"""
-        self.check(b, a)
-
-    def test_comment(self):
-        b = """reload( a ) # comment"""
-        a = """import importlib\nimportlib.reload( a ) # comment"""
-        self.check(b, a)
-
-        # PEP 8 comments
-        b = """reload( a )  # comment"""
-        a = """import importlib\nimportlib.reload( a )  # comment"""
-        self.check(b, a)
-
-    def test_space(self):
-        b = """reload( a )"""
-        a = """import importlib\nimportlib.reload( a )"""
-        self.check(b, a)
-
-        b = """reload( a)"""
-        a = """import importlib\nimportlib.reload( a)"""
-        self.check(b, a)
-
-        b = """reload(a )"""
-        a = """import importlib\nimportlib.reload(a )"""
-        self.check(b, a)
-
-    def test_unchanged(self):
-        s = """reload(a=1)"""
-        self.unchanged(s)
-
-        s = """reload(f, g)"""
-        self.unchanged(s)
-
-        s = """reload(f, *h)"""
-        self.unchanged(s)
-
-        s = """reload(f, *h, **i)"""
-        self.unchanged(s)
-
-        s = """reload(f, **i)"""
-        self.unchanged(s)
-
-        s = """reload(*h, **i)"""
-        self.unchanged(s)
-
-        s = """reload(*h)"""
-        self.unchanged(s)
-
-        s = """reload(**i)"""
-        self.unchanged(s)
-
-        s = """reload()"""
-        self.unchanged(s)
-
-class Test_intern(FixerTestCase):
-    fixer = "intern"
-
-    def test_prefix_preservation(self):
-        b = """x =   intern(  a  )"""
-        a = """import sys\nx =   sys.intern(  a  )"""
-        self.check(b, a)
-
-        b = """y = intern("b" # test
-              )"""
-        a = """import sys\ny = sys.intern("b" # test
-              )"""
-        self.check(b, a)
-
-        b = """z = intern(a+b+c.d,   )"""
-        a = """import sys\nz = sys.intern(a+b+c.d,   )"""
-        self.check(b, a)
-
-    def test(self):
-        b = """x = intern(a)"""
-        a = """import sys\nx = sys.intern(a)"""
-        self.check(b, a)
-
-        b = """z = intern(a+b+c.d,)"""
-        a = """import sys\nz = sys.intern(a+b+c.d,)"""
-        self.check(b, a)
-
-        b = """intern("y%s" % 5).replace("y", "")"""
-        a = """import sys\nsys.intern("y%s" % 5).replace("y", "")"""
-        self.check(b, a)
-
-    # These should not be refactored
-
-    def test_unchanged(self):
-        s = """intern(a=1)"""
-        self.unchanged(s)
-
-        s = """intern(f, g)"""
-        self.unchanged(s)
-
-        s = """intern(*h)"""
-        self.unchanged(s)
-
-        s = """intern(**i)"""
-        self.unchanged(s)
-
-        s = """intern()"""
-        self.unchanged(s)
-
-class Test_reduce(FixerTestCase):
-    fixer = "reduce"
-
-    def test_simple_call(self):
-        b = "reduce(a, b, c)"
-        a = "from functools import reduce\nreduce(a, b, c)"
-        self.check(b, a)
-
-    def test_bug_7253(self):
-        # fix_tuple_params was being bad and orphaning nodes in the tree.
-        b = "def x(arg): reduce(sum, [])"
-        a = "from functools import reduce\ndef x(arg): reduce(sum, [])"
-        self.check(b, a)
-
-    def test_call_with_lambda(self):
-        b = "reduce(lambda x, y: x + y, seq)"
-        a = "from functools import reduce\nreduce(lambda x, y: x + y, seq)"
-        self.check(b, a)
-
-    def test_unchanged(self):
-        s = "reduce(a)"
-        self.unchanged(s)
-
-        s = "reduce(a, b=42)"
-        self.unchanged(s)
-
-        s = "reduce(a, b, c, d)"
-        self.unchanged(s)
-
-        s = "reduce(**c)"
-        self.unchanged(s)
-
-        s = "reduce()"
-        self.unchanged(s)
-
-class Test_print(FixerTestCase):
-    fixer = "print"
-
-    def test_prefix_preservation(self):
-        b = """print 1,   1+1,   1+1+1"""
-        a = """print(1,   1+1,   1+1+1)"""
-        self.check(b, a)
-
-    def test_idempotency(self):
-        s = """print()"""
-        self.unchanged(s)
-
-        s = """print('')"""
-        self.unchanged(s)
-
-    def test_idempotency_print_as_function(self):
-        self.refactor.driver.grammar = pygram.python_grammar_no_print_statement
-        s = """print(1, 1+1, 1+1+1)"""
-        self.unchanged(s)
-
-        s = """print()"""
-        self.unchanged(s)
-
-        s = """print('')"""
-        self.unchanged(s)
-
-    def test_1(self):
-        b = """print 1, 1+1, 1+1+1"""
-        a = """print(1, 1+1, 1+1+1)"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """print 1, 2"""
-        a = """print(1, 2)"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """print"""
-        a = """print()"""
-        self.check(b, a)
-
-    def test_4(self):
-        # from bug 3000
-        b = """print whatever; print"""
-        a = """print(whatever); print()"""
-        self.check(b, a)
-
-    def test_5(self):
-        b = """print; print whatever;"""
-        a = """print(); print(whatever);"""
-        self.check(b, a)
-
-    def test_tuple(self):
-        b = """print (a, b, c)"""
-        a = """print((a, b, c))"""
-        self.check(b, a)
-
-    # trailing commas
-
-    def test_trailing_comma_1(self):
-        b = """print 1, 2, 3,"""
-        a = """print(1, 2, 3, end=' ')"""
-        self.check(b, a)
-
-    def test_trailing_comma_2(self):
-        b = """print 1, 2,"""
-        a = """print(1, 2, end=' ')"""
-        self.check(b, a)
-
-    def test_trailing_comma_3(self):
-        b = """print 1,"""
-        a = """print(1, end=' ')"""
-        self.check(b, a)
-
-    # >> stuff
-
-    def test_vargs_without_trailing_comma(self):
-        b = """print >>sys.stderr, 1, 2, 3"""
-        a = """print(1, 2, 3, file=sys.stderr)"""
-        self.check(b, a)
-
-    def test_with_trailing_comma(self):
-        b = """print >>sys.stderr, 1, 2,"""
-        a = """print(1, 2, end=' ', file=sys.stderr)"""
-        self.check(b, a)
-
-    def test_no_trailing_comma(self):
-        b = """print >>sys.stderr, 1+1"""
-        a = """print(1+1, file=sys.stderr)"""
-        self.check(b, a)
-
-    def test_spaces_before_file(self):
-        b = """print >>  sys.stderr"""
-        a = """print(file=sys.stderr)"""
-        self.check(b, a)
-
-    def test_with_future_print_function(self):
-        s = "from __future__ import print_function\n" \
-            "print('Hai!', end=' ')"
-        self.unchanged(s)
-
-        b = "print 'Hello, world!'"
-        a = "print('Hello, world!')"
-        self.check(b, a)
-
-
-class Test_exec(FixerTestCase):
-    fixer = "exec"
-
-    def test_prefix_preservation(self):
-        b = """  exec code in ns1,   ns2"""
-        a = """  exec(code, ns1,   ns2)"""
-        self.check(b, a)
-
-    def test_basic(self):
-        b = """exec code"""
-        a = """exec(code)"""
-        self.check(b, a)
-
-    def test_with_globals(self):
-        b = """exec code in ns"""
-        a = """exec(code, ns)"""
-        self.check(b, a)
-
-    def test_with_globals_locals(self):
-        b = """exec code in ns1, ns2"""
-        a = """exec(code, ns1, ns2)"""
-        self.check(b, a)
-
-    def test_complex_1(self):
-        b = """exec (a.b()) in ns"""
-        a = """exec((a.b()), ns)"""
-        self.check(b, a)
-
-    def test_complex_2(self):
-        b = """exec a.b() + c in ns"""
-        a = """exec(a.b() + c, ns)"""
-        self.check(b, a)
-
-    # These should not be touched
-
-    def test_unchanged_1(self):
-        s = """exec(code)"""
-        self.unchanged(s)
-
-    def test_unchanged_2(self):
-        s = """exec (code)"""
-        self.unchanged(s)
-
-    def test_unchanged_3(self):
-        s = """exec(code, ns)"""
-        self.unchanged(s)
-
-    def test_unchanged_4(self):
-        s = """exec(code, ns1, ns2)"""
-        self.unchanged(s)
-
-class Test_repr(FixerTestCase):
-    fixer = "repr"
-
-    def test_prefix_preservation(self):
-        b = """x =   `1 + 2`"""
-        a = """x =   repr(1 + 2)"""
-        self.check(b, a)
-
-    def test_simple_1(self):
-        b = """x = `1 + 2`"""
-        a = """x = repr(1 + 2)"""
-        self.check(b, a)
-
-    def test_simple_2(self):
-        b = """y = `x`"""
-        a = """y = repr(x)"""
-        self.check(b, a)
-
-    def test_complex(self):
-        b = """z = `y`.__repr__()"""
-        a = """z = repr(y).__repr__()"""
-        self.check(b, a)
-
-    def test_tuple(self):
-        b = """x = `1, 2, 3`"""
-        a = """x = repr((1, 2, 3))"""
-        self.check(b, a)
-
-    def test_nested(self):
-        b = """x = `1 + `2``"""
-        a = """x = repr(1 + repr(2))"""
-        self.check(b, a)
-
-    def test_nested_tuples(self):
-        b = """x = `1, 2 + `3, 4``"""
-        a = """x = repr((1, 2 + repr((3, 4))))"""
-        self.check(b, a)
-
-class Test_except(FixerTestCase):
-    fixer = "except"
-
-    def test_prefix_preservation(self):
-        b = """
-            try:
-                pass
-            except (RuntimeError, ImportError),    e:
-                pass"""
-        a = """
-            try:
-                pass
-            except (RuntimeError, ImportError) as    e:
-                pass"""
-        self.check(b, a)
-
-    def test_simple(self):
-        b = """
-            try:
-                pass
-            except Foo, e:
-                pass"""
-        a = """
-            try:
-                pass
-            except Foo as e:
-                pass"""
-        self.check(b, a)
-
-    def test_simple_no_space_before_target(self):
-        b = """
-            try:
-                pass
-            except Foo,e:
-                pass"""
-        a = """
-            try:
-                pass
-            except Foo as e:
-                pass"""
-        self.check(b, a)
-
-    def test_tuple_unpack(self):
-        b = """
-            def foo():
-                try:
-                    pass
-                except Exception, (f, e):
-                    pass
-                except ImportError, e:
-                    pass"""
-
-        a = """
-            def foo():
-                try:
-                    pass
-                except Exception as xxx_todo_changeme:
-                    (f, e) = xxx_todo_changeme.args
-                    pass
-                except ImportError as e:
-                    pass"""
-        self.check(b, a)
-
-    def test_multi_class(self):
-        b = """
-            try:
-                pass
-            except (RuntimeError, ImportError), e:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except (RuntimeError, ImportError) as e:
-                pass"""
-        self.check(b, a)
-
-    def test_list_unpack(self):
-        b = """
-            try:
-                pass
-            except Exception, [a, b]:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except Exception as xxx_todo_changeme:
-                [a, b] = xxx_todo_changeme.args
-                pass"""
-        self.check(b, a)
-
-    def test_weird_target_1(self):
-        b = """
-            try:
-                pass
-            except Exception, d[5]:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except Exception as xxx_todo_changeme:
-                d[5] = xxx_todo_changeme
-                pass"""
-        self.check(b, a)
-
-    def test_weird_target_2(self):
-        b = """
-            try:
-                pass
-            except Exception, a.foo:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except Exception as xxx_todo_changeme:
-                a.foo = xxx_todo_changeme
-                pass"""
-        self.check(b, a)
-
-    def test_weird_target_3(self):
-        b = """
-            try:
-                pass
-            except Exception, a().foo:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except Exception as xxx_todo_changeme:
-                a().foo = xxx_todo_changeme
-                pass"""
-        self.check(b, a)
-
-    def test_bare_except(self):
-        b = """
-            try:
-                pass
-            except Exception, a:
-                pass
-            except:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except Exception as a:
-                pass
-            except:
-                pass"""
-        self.check(b, a)
-
-    def test_bare_except_and_else_finally(self):
-        b = """
-            try:
-                pass
-            except Exception, a:
-                pass
-            except:
-                pass
-            else:
-                pass
-            finally:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except Exception as a:
-                pass
-            except:
-                pass
-            else:
-                pass
-            finally:
-                pass"""
-        self.check(b, a)
-
-    def test_multi_fixed_excepts_before_bare_except(self):
-        b = """
-            try:
-                pass
-            except TypeError, b:
-                pass
-            except Exception, a:
-                pass
-            except:
-                pass"""
-
-        a = """
-            try:
-                pass
-            except TypeError as b:
-                pass
-            except Exception as a:
-                pass
-            except:
-                pass"""
-        self.check(b, a)
-
-    def test_one_line_suites(self):
-        b = """
-            try: raise TypeError
-            except TypeError, e:
-                pass
-            """
-        a = """
-            try: raise TypeError
-            except TypeError as e:
-                pass
-            """
-        self.check(b, a)
-        b = """
-            try:
-                raise TypeError
-            except TypeError, e: pass
-            """
-        a = """
-            try:
-                raise TypeError
-            except TypeError as e: pass
-            """
-        self.check(b, a)
-        b = """
-            try: raise TypeError
-            except TypeError, e: pass
-            """
-        a = """
-            try: raise TypeError
-            except TypeError as e: pass
-            """
-        self.check(b, a)
-        b = """
-            try: raise TypeError
-            except TypeError, e: pass
-            else: function()
-            finally: done()
-            """
-        a = """
-            try: raise TypeError
-            except TypeError as e: pass
-            else: function()
-            finally: done()
-            """
-        self.check(b, a)
-
-    # These should not be touched:
-
-    def test_unchanged_1(self):
-        s = """
-            try:
-                pass
-            except:
-                pass"""
-        self.unchanged(s)
-
-    def test_unchanged_2(self):
-        s = """
-            try:
-                pass
-            except Exception:
-                pass"""
-        self.unchanged(s)
-
-    def test_unchanged_3(self):
-        s = """
-            try:
-                pass
-            except (Exception, SystemExit):
-                pass"""
-        self.unchanged(s)
-
-class Test_raise(FixerTestCase):
-    fixer = "raise"
-
-    def test_basic(self):
-        b = """raise Exception, 5"""
-        a = """raise Exception(5)"""
-        self.check(b, a)
-
-    def test_prefix_preservation(self):
-        b = """raise Exception,5"""
-        a = """raise Exception(5)"""
-        self.check(b, a)
-
-        b = """raise   Exception,    5"""
-        a = """raise   Exception(5)"""
-        self.check(b, a)
-
-    def test_with_comments(self):
-        b = """raise Exception, 5 # foo"""
-        a = """raise Exception(5) # foo"""
-        self.check(b, a)
-
-        b = """raise E, (5, 6) % (a, b) # foo"""
-        a = """raise E((5, 6) % (a, b)) # foo"""
-        self.check(b, a)
-
-        b = """def foo():
-                    raise Exception, 5, 6 # foo"""
-        a = """def foo():
-                    raise Exception(5).with_traceback(6) # foo"""
-        self.check(b, a)
-
-    def test_None_value(self):
-        b = """raise Exception(5), None, tb"""
-        a = """raise Exception(5).with_traceback(tb)"""
-        self.check(b, a)
-
-    def test_tuple_value(self):
-        b = """raise Exception, (5, 6, 7)"""
-        a = """raise Exception(5, 6, 7)"""
-        self.check(b, a)
-
-    def test_tuple_detection(self):
-        b = """raise E, (5, 6) % (a, b)"""
-        a = """raise E((5, 6) % (a, b))"""
-        self.check(b, a)
-
-    def test_tuple_exc_1(self):
-        b = """raise (((E1, E2), E3), E4), V"""
-        a = """raise E1(V)"""
-        self.check(b, a)
-
-    def test_tuple_exc_2(self):
-        b = """raise (E1, (E2, E3), E4), V"""
-        a = """raise E1(V)"""
-        self.check(b, a)
-
-    # These should produce a warning
-
-    def test_string_exc(self):
-        s = """raise 'foo'"""
-        self.warns_unchanged(s, "Python 3 does not support string exceptions")
-
-    def test_string_exc_val(self):
-        s = """raise "foo", 5"""
-        self.warns_unchanged(s, "Python 3 does not support string exceptions")
-
-    def test_string_exc_val_tb(self):
-        s = """raise "foo", 5, 6"""
-        self.warns_unchanged(s, "Python 3 does not support string exceptions")
-
-    # These should result in traceback-assignment
-
-    def test_tb_1(self):
-        b = """def foo():
-                    raise Exception, 5, 6"""
-        a = """def foo():
-                    raise Exception(5).with_traceback(6)"""
-        self.check(b, a)
-
-    def test_tb_2(self):
-        b = """def foo():
-                    a = 5
-                    raise Exception, 5, 6
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    raise Exception(5).with_traceback(6)
-                    b = 6"""
-        self.check(b, a)
-
-    def test_tb_3(self):
-        b = """def foo():
-                    raise Exception,5,6"""
-        a = """def foo():
-                    raise Exception(5).with_traceback(6)"""
-        self.check(b, a)
-
-    def test_tb_4(self):
-        b = """def foo():
-                    a = 5
-                    raise Exception,5,6
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    raise Exception(5).with_traceback(6)
-                    b = 6"""
-        self.check(b, a)
-
-    def test_tb_5(self):
-        b = """def foo():
-                    raise Exception, (5, 6, 7), 6"""
-        a = """def foo():
-                    raise Exception(5, 6, 7).with_traceback(6)"""
-        self.check(b, a)
-
-    def test_tb_6(self):
-        b = """def foo():
-                    a = 5
-                    raise Exception, (5, 6, 7), 6
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    raise Exception(5, 6, 7).with_traceback(6)
-                    b = 6"""
-        self.check(b, a)
-
-class Test_throw(FixerTestCase):
-    fixer = "throw"
-
-    def test_1(self):
-        b = """g.throw(Exception, 5)"""
-        a = """g.throw(Exception(5))"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """g.throw(Exception,5)"""
-        a = """g.throw(Exception(5))"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """g.throw(Exception, (5, 6, 7))"""
-        a = """g.throw(Exception(5, 6, 7))"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """5 + g.throw(Exception, 5)"""
-        a = """5 + g.throw(Exception(5))"""
-        self.check(b, a)
-
-    # These should produce warnings
-
-    def test_warn_1(self):
-        s = """g.throw("foo")"""
-        self.warns_unchanged(s, "Python 3 does not support string exceptions")
-
-    def test_warn_2(self):
-        s = """g.throw("foo", 5)"""
-        self.warns_unchanged(s, "Python 3 does not support string exceptions")
-
-    def test_warn_3(self):
-        s = """g.throw("foo", 5, 6)"""
-        self.warns_unchanged(s, "Python 3 does not support string exceptions")
-
-    # These should not be touched
-
-    def test_untouched_1(self):
-        s = """g.throw(Exception)"""
-        self.unchanged(s)
-
-    def test_untouched_2(self):
-        s = """g.throw(Exception(5, 6))"""
-        self.unchanged(s)
-
-    def test_untouched_3(self):
-        s = """5 + g.throw(Exception(5, 6))"""
-        self.unchanged(s)
-
-    # These should result in traceback-assignment
-
-    def test_tb_1(self):
-        b = """def foo():
-                    g.throw(Exception, 5, 6)"""
-        a = """def foo():
-                    g.throw(Exception(5).with_traceback(6))"""
-        self.check(b, a)
-
-    def test_tb_2(self):
-        b = """def foo():
-                    a = 5
-                    g.throw(Exception, 5, 6)
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    g.throw(Exception(5).with_traceback(6))
-                    b = 6"""
-        self.check(b, a)
-
-    def test_tb_3(self):
-        b = """def foo():
-                    g.throw(Exception,5,6)"""
-        a = """def foo():
-                    g.throw(Exception(5).with_traceback(6))"""
-        self.check(b, a)
-
-    def test_tb_4(self):
-        b = """def foo():
-                    a = 5
-                    g.throw(Exception,5,6)
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    g.throw(Exception(5).with_traceback(6))
-                    b = 6"""
-        self.check(b, a)
-
-    def test_tb_5(self):
-        b = """def foo():
-                    g.throw(Exception, (5, 6, 7), 6)"""
-        a = """def foo():
-                    g.throw(Exception(5, 6, 7).with_traceback(6))"""
-        self.check(b, a)
-
-    def test_tb_6(self):
-        b = """def foo():
-                    a = 5
-                    g.throw(Exception, (5, 6, 7), 6)
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    g.throw(Exception(5, 6, 7).with_traceback(6))
-                    b = 6"""
-        self.check(b, a)
-
-    def test_tb_7(self):
-        b = """def foo():
-                    a + g.throw(Exception, 5, 6)"""
-        a = """def foo():
-                    a + g.throw(Exception(5).with_traceback(6))"""
-        self.check(b, a)
-
-    def test_tb_8(self):
-        b = """def foo():
-                    a = 5
-                    a + g.throw(Exception, 5, 6)
-                    b = 6"""
-        a = """def foo():
-                    a = 5
-                    a + g.throw(Exception(5).with_traceback(6))
-                    b = 6"""
-        self.check(b, a)
-
-class Test_long(FixerTestCase):
-    fixer = "long"
-
-    def test_1(self):
-        b = """x = long(x)"""
-        a = """x = int(x)"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """y = isinstance(x, long)"""
-        a = """y = isinstance(x, int)"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """z = type(x) in (int, long)"""
-        a = """z = type(x) in (int, int)"""
-        self.check(b, a)
-
-    def test_unchanged(self):
-        s = """long = True"""
-        self.unchanged(s)
-
-        s = """s.long = True"""
-        self.unchanged(s)
-
-        s = """def long(): pass"""
-        self.unchanged(s)
-
-        s = """class long(): pass"""
-        self.unchanged(s)
-
-        s = """def f(long): pass"""
-        self.unchanged(s)
-
-        s = """def f(g, long): pass"""
-        self.unchanged(s)
-
-        s = """def f(x, long=True): pass"""
-        self.unchanged(s)
-
-    def test_prefix_preservation(self):
-        b = """x =   long(  x  )"""
-        a = """x =   int(  x  )"""
-        self.check(b, a)
-
-
-class Test_execfile(FixerTestCase):
-    fixer = "execfile"
-
-    def test_conversion(self):
-        b = """execfile("fn")"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'))"""
-        self.check(b, a)
-
-        b = """execfile("fn", glob)"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'), glob)"""
-        self.check(b, a)
-
-        b = """execfile("fn", glob, loc)"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'), glob, loc)"""
-        self.check(b, a)
-
-        b = """execfile("fn", globals=glob)"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'), globals=glob)"""
-        self.check(b, a)
-
-        b = """execfile("fn", locals=loc)"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'), locals=loc)"""
-        self.check(b, a)
-
-        b = """execfile("fn", globals=glob, locals=loc)"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'), globals=glob, locals=loc)"""
-        self.check(b, a)
-
-    def test_spacing(self):
-        b = """execfile( "fn" )"""
-        a = """exec(compile(open( "fn", "rb" ).read(), "fn", 'exec'))"""
-        self.check(b, a)
-
-        b = """execfile("fn",  globals = glob)"""
-        a = """exec(compile(open("fn", "rb").read(), "fn", 'exec'),  globals = glob)"""
-        self.check(b, a)
-
-
-class Test_isinstance(FixerTestCase):
-    fixer = "isinstance"
-
-    def test_remove_multiple_items(self):
-        b = """isinstance(x, (int, int, int))"""
-        a = """isinstance(x, int)"""
-        self.check(b, a)
-
-        b = """isinstance(x, (int, float, int, int, float))"""
-        a = """isinstance(x, (int, float))"""
-        self.check(b, a)
-
-        b = """isinstance(x, (int, float, int, int, float, str))"""
-        a = """isinstance(x, (int, float, str))"""
-        self.check(b, a)
-
-        b = """isinstance(foo() + bar(), (x(), y(), x(), int, int))"""
-        a = """isinstance(foo() + bar(), (x(), y(), x(), int))"""
-        self.check(b, a)
-
-    def test_prefix_preservation(self):
-        b = """if    isinstance(  foo(), (  bar, bar, baz )) : pass"""
-        a = """if    isinstance(  foo(), (  bar, baz )) : pass"""
-        self.check(b, a)
-
-    def test_unchanged(self):
-        self.unchanged("isinstance(x, (str, int))")
-
-class Test_dict(FixerTestCase):
-    fixer = "dict"
-
-    def test_prefix_preservation(self):
-        b = "if   d. keys  (  )  : pass"
-        a = "if   list(d. keys  (  ))  : pass"
-        self.check(b, a)
-
-        b = "if   d. items  (  )  : pass"
-        a = "if   list(d. items  (  ))  : pass"
-        self.check(b, a)
-
-        b = "if   d. iterkeys  ( )  : pass"
-        a = "if   iter(d. keys  ( ))  : pass"
-        self.check(b, a)
-
-        b = "[i for i in    d.  iterkeys(  )  ]"
-        a = "[i for i in    d.  keys(  )  ]"
-        self.check(b, a)
-
-        b = "if   d. viewkeys  ( )  : pass"
-        a = "if   d. keys  ( )  : pass"
-        self.check(b, a)
-
-        b = "[i for i in    d.  viewkeys(  )  ]"
-        a = "[i for i in    d.  keys(  )  ]"
-        self.check(b, a)
-
-    def test_trailing_comment(self):
-        b = "d.keys() # foo"
-        a = "list(d.keys()) # foo"
-        self.check(b, a)
-
-        b = "d.items()  # foo"
-        a = "list(d.items())  # foo"
-        self.check(b, a)
-
-        b = "d.iterkeys()  # foo"
-        a = "iter(d.keys())  # foo"
-        self.check(b, a)
-
-        b = """[i for i in d.iterkeys() # foo
-               ]"""
-        a = """[i for i in d.keys() # foo
-               ]"""
-        self.check(b, a)
-
-        b = """[i for i in d.iterkeys() # foo
-               ]"""
-        a = """[i for i in d.keys() # foo
-               ]"""
-        self.check(b, a)
-
-        b = "d.viewitems()  # foo"
-        a = "d.items()  # foo"
-        self.check(b, a)
-
-    def test_unchanged(self):
-        for wrapper in fixer_util.consuming_calls:
-            s = "s = %s(d.keys())" % wrapper
-            self.unchanged(s)
-
-            s = "s = %s(d.values())" % wrapper
-            self.unchanged(s)
-
-            s = "s = %s(d.items())" % wrapper
-            self.unchanged(s)
-
-    def test_01(self):
-        b = "d.keys()"
-        a = "list(d.keys())"
-        self.check(b, a)
-
-        b = "a[0].foo().keys()"
-        a = "list(a[0].foo().keys())"
-        self.check(b, a)
-
-    def test_02(self):
-        b = "d.items()"
-        a = "list(d.items())"
-        self.check(b, a)
-
-    def test_03(self):
-        b = "d.values()"
-        a = "list(d.values())"
-        self.check(b, a)
-
-    def test_04(self):
-        b = "d.iterkeys()"
-        a = "iter(d.keys())"
-        self.check(b, a)
-
-    def test_05(self):
-        b = "d.iteritems()"
-        a = "iter(d.items())"
-        self.check(b, a)
-
-    def test_06(self):
-        b = "d.itervalues()"
-        a = "iter(d.values())"
-        self.check(b, a)
-
-    def test_07(self):
-        s = "list(d.keys())"
-        self.unchanged(s)
-
-    def test_08(self):
-        s = "sorted(d.keys())"
-        self.unchanged(s)
-
-    def test_09(self):
-        b = "iter(d.keys())"
-        a = "iter(list(d.keys()))"
-        self.check(b, a)
-
-    def test_10(self):
-        b = "foo(d.keys())"
-        a = "foo(list(d.keys()))"
-        self.check(b, a)
-
-    def test_11(self):
-        b = "for i in d.keys(): print i"
-        a = "for i in list(d.keys()): print i"
-        self.check(b, a)
-
-    def test_12(self):
-        b = "for i in d.iterkeys(): print i"
-        a = "for i in d.keys(): print i"
-        self.check(b, a)
-
-    def test_13(self):
-        b = "[i for i in d.keys()]"
-        a = "[i for i in list(d.keys())]"
-        self.check(b, a)
-
-    def test_14(self):
-        b = "[i for i in d.iterkeys()]"
-        a = "[i for i in d.keys()]"
-        self.check(b, a)
-
-    def test_15(self):
-        b = "(i for i in d.keys())"
-        a = "(i for i in list(d.keys()))"
-        self.check(b, a)
-
-    def test_16(self):
-        b = "(i for i in d.iterkeys())"
-        a = "(i for i in d.keys())"
-        self.check(b, a)
-
-    def test_17(self):
-        b = "iter(d.iterkeys())"
-        a = "iter(d.keys())"
-        self.check(b, a)
-
-    def test_18(self):
-        b = "list(d.iterkeys())"
-        a = "list(d.keys())"
-        self.check(b, a)
-
-    def test_19(self):
-        b = "sorted(d.iterkeys())"
-        a = "sorted(d.keys())"
-        self.check(b, a)
-
-    def test_20(self):
-        b = "foo(d.iterkeys())"
-        a = "foo(iter(d.keys()))"
-        self.check(b, a)
-
-    def test_21(self):
-        b = "print h.iterkeys().next()"
-        a = "print iter(h.keys()).next()"
-        self.check(b, a)
-
-    def test_22(self):
-        b = "print h.keys()[0]"
-        a = "print list(h.keys())[0]"
-        self.check(b, a)
-
-    def test_23(self):
-        b = "print list(h.iterkeys().next())"
-        a = "print list(iter(h.keys()).next())"
-        self.check(b, a)
-
-    def test_24(self):
-        b = "for x in h.keys()[0]: print x"
-        a = "for x in list(h.keys())[0]: print x"
-        self.check(b, a)
-
-    def test_25(self):
-        b = "d.viewkeys()"
-        a = "d.keys()"
-        self.check(b, a)
-
-    def test_26(self):
-        b = "d.viewitems()"
-        a = "d.items()"
-        self.check(b, a)
-
-    def test_27(self):
-        b = "d.viewvalues()"
-        a = "d.values()"
-        self.check(b, a)
-
-    def test_28(self):
-        b = "[i for i in d.viewkeys()]"
-        a = "[i for i in d.keys()]"
-        self.check(b, a)
-
-    def test_29(self):
-        b = "(i for i in d.viewkeys())"
-        a = "(i for i in d.keys())"
-        self.check(b, a)
-
-    def test_30(self):
-        b = "iter(d.viewkeys())"
-        a = "iter(d.keys())"
-        self.check(b, a)
-
-    def test_31(self):
-        b = "list(d.viewkeys())"
-        a = "list(d.keys())"
-        self.check(b, a)
-
-    def test_32(self):
-        b = "sorted(d.viewkeys())"
-        a = "sorted(d.keys())"
-        self.check(b, a)
-
-class Test_xrange(FixerTestCase):
-    fixer = "xrange"
-
-    def test_prefix_preservation(self):
-        b = """x =    xrange(  10  )"""
-        a = """x =    range(  10  )"""
-        self.check(b, a)
-
-        b = """x = xrange(  1  ,  10   )"""
-        a = """x = range(  1  ,  10   )"""
-        self.check(b, a)
-
-        b = """x = xrange(  0  ,  10 ,  2 )"""
-        a = """x = range(  0  ,  10 ,  2 )"""
-        self.check(b, a)
-
-    def test_single_arg(self):
-        b = """x = xrange(10)"""
-        a = """x = range(10)"""
-        self.check(b, a)
-
-    def test_two_args(self):
-        b = """x = xrange(1, 10)"""
-        a = """x = range(1, 10)"""
-        self.check(b, a)
-
-    def test_three_args(self):
-        b = """x = xrange(0, 10, 2)"""
-        a = """x = range(0, 10, 2)"""
-        self.check(b, a)
-
-    def test_wrap_in_list(self):
-        b = """x = range(10, 3, 9)"""
-        a = """x = list(range(10, 3, 9))"""
-        self.check(b, a)
-
-        b = """x = foo(range(10, 3, 9))"""
-        a = """x = foo(list(range(10, 3, 9)))"""
-        self.check(b, a)
-
-        b = """x = range(10, 3, 9) + [4]"""
-        a = """x = list(range(10, 3, 9)) + [4]"""
-        self.check(b, a)
-
-        b = """x = range(10)[::-1]"""
-        a = """x = list(range(10))[::-1]"""
-        self.check(b, a)
-
-        b = """x = range(10)  [3]"""
-        a = """x = list(range(10))  [3]"""
-        self.check(b, a)
-
-    def test_xrange_in_for(self):
-        b = """for i in xrange(10):\n    j=i"""
-        a = """for i in range(10):\n    j=i"""
-        self.check(b, a)
-
-        b = """[i for i in xrange(10)]"""
-        a = """[i for i in range(10)]"""
-        self.check(b, a)
-
-    def test_range_in_for(self):
-        self.unchanged("for i in range(10): pass")
-        self.unchanged("[i for i in range(10)]")
-
-    def test_in_contains_test(self):
-        self.unchanged("x in range(10, 3, 9)")
-
-    def test_in_consuming_context(self):
-        for call in fixer_util.consuming_calls:
-            self.unchanged("a = %s(range(10))" % call)
-
-class Test_xrange_with_reduce(FixerTestCase):
-
-    def setUp(self):
-        super(Test_xrange_with_reduce, self).setUp(["xrange", "reduce"])
-
-    def test_double_transform(self):
-        b = """reduce(x, xrange(5))"""
-        a = """from functools import reduce
-reduce(x, range(5))"""
-        self.check(b, a)
-
-class Test_raw_input(FixerTestCase):
-    fixer = "raw_input"
-
-    def test_prefix_preservation(self):
-        b = """x =    raw_input(   )"""
-        a = """x =    input(   )"""
-        self.check(b, a)
-
-        b = """x = raw_input(   ''   )"""
-        a = """x = input(   ''   )"""
-        self.check(b, a)
-
-    def test_1(self):
-        b = """x = raw_input()"""
-        a = """x = input()"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """x = raw_input('')"""
-        a = """x = input('')"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """x = raw_input('prompt')"""
-        a = """x = input('prompt')"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """x = raw_input(foo(a) + 6)"""
-        a = """x = input(foo(a) + 6)"""
-        self.check(b, a)
-
-    def test_5(self):
-        b = """x = raw_input(invite).split()"""
-        a = """x = input(invite).split()"""
-        self.check(b, a)
-
-    def test_6(self):
-        b = """x = raw_input(invite) . split ()"""
-        a = """x = input(invite) . split ()"""
-        self.check(b, a)
-
-    def test_8(self):
-        b = "x = int(raw_input())"
-        a = "x = int(input())"
-        self.check(b, a)
-
-class Test_funcattrs(FixerTestCase):
-    fixer = "funcattrs"
-
-    attrs = ["closure", "doc", "name", "defaults", "code", "globals", "dict"]
-
-    def test(self):
-        for attr in self.attrs:
-            b = "a.func_%s" % attr
-            a = "a.__%s__" % attr
-            self.check(b, a)
-
-            b = "self.foo.func_%s.foo_bar" % attr
-            a = "self.foo.__%s__.foo_bar" % attr
-            self.check(b, a)
-
-    def test_unchanged(self):
-        for attr in self.attrs:
-            s = "foo(func_%s + 5)" % attr
-            self.unchanged(s)
-
-            s = "f(foo.__%s__)" % attr
-            self.unchanged(s)
-
-            s = "f(foo.__%s__.foo)" % attr
-            self.unchanged(s)
-
-class Test_xreadlines(FixerTestCase):
-    fixer = "xreadlines"
-
-    def test_call(self):
-        b = "for x in f.xreadlines(): pass"
-        a = "for x in f: pass"
-        self.check(b, a)
-
-        b = "for x in foo().xreadlines(): pass"
-        a = "for x in foo(): pass"
-        self.check(b, a)
-
-        b = "for x in (5 + foo()).xreadlines(): pass"
-        a = "for x in (5 + foo()): pass"
-        self.check(b, a)
-
-    def test_attr_ref(self):
-        b = "foo(f.xreadlines + 5)"
-        a = "foo(f.__iter__ + 5)"
-        self.check(b, a)
-
-        b = "foo(f().xreadlines + 5)"
-        a = "foo(f().__iter__ + 5)"
-        self.check(b, a)
-
-        b = "foo((5 + f()).xreadlines + 5)"
-        a = "foo((5 + f()).__iter__ + 5)"
-        self.check(b, a)
-
-    def test_unchanged(self):
-        s = "for x in f.xreadlines(5): pass"
-        self.unchanged(s)
-
-        s = "for x in f.xreadlines(k=5): pass"
-        self.unchanged(s)
-
-        s = "for x in f.xreadlines(*k, **v): pass"
-        self.unchanged(s)
-
-        s = "foo(xreadlines)"
-        self.unchanged(s)
-
-
-class ImportsFixerTests:
-
-    def test_import_module(self):
-        for old, new in self.modules.items():
-            b = "import %s" % old
-            a = "import %s" % new
-            self.check(b, a)
-
-            b = "import foo, %s, bar" % old
-            a = "import foo, %s, bar" % new
-            self.check(b, a)
-
-    def test_import_from(self):
-        for old, new in self.modules.items():
-            b = "from %s import foo" % old
-            a = "from %s import foo" % new
-            self.check(b, a)
-
-            b = "from %s import foo, bar" % old
-            a = "from %s import foo, bar" % new
-            self.check(b, a)
-
-            b = "from %s import (yes, no)" % old
-            a = "from %s import (yes, no)" % new
-            self.check(b, a)
-
-    def test_import_module_as(self):
-        for old, new in self.modules.items():
-            b = "import %s as foo_bar" % old
-            a = "import %s as foo_bar" % new
-            self.check(b, a)
-
-            b = "import %s as foo_bar" % old
-            a = "import %s as foo_bar" % new
-            self.check(b, a)
-
-    def test_import_from_as(self):
-        for old, new in self.modules.items():
-            b = "from %s import foo as bar" % old
-            a = "from %s import foo as bar" % new
-            self.check(b, a)
-
-    def test_star(self):
-        for old, new in self.modules.items():
-            b = "from %s import *" % old
-            a = "from %s import *" % new
-            self.check(b, a)
-
-    def test_import_module_usage(self):
-        for old, new in self.modules.items():
-            b = """
-                import %s
-                foo(%s.bar)
-                """ % (old, old)
-            a = """
-                import %s
-                foo(%s.bar)
-                """ % (new, new)
-            self.check(b, a)
-
-            b = """
-                from %s import x
-                %s = 23
-                """ % (old, old)
-            a = """
-                from %s import x
-                %s = 23
-                """ % (new, old)
-            self.check(b, a)
-
-            s = """
-                def f():
-                    %s.method()
-                """ % (old,)
-            self.unchanged(s)
-
-            # test nested usage
-            b = """
-                import %s
-                %s.bar(%s.foo)
-                """ % (old, old, old)
-            a = """
-                import %s
-                %s.bar(%s.foo)
-                """ % (new, new, new)
-            self.check(b, a)
-
-            b = """
-                import %s
-                x.%s
-                """ % (old, old)
-            a = """
-                import %s
-                x.%s
-                """ % (new, old)
-            self.check(b, a)
-
-
-class Test_imports(FixerTestCase, ImportsFixerTests):
-    fixer = "imports"
-    from lib2to3.fixes.fix_imports import MAPPING as modules
-
-    def test_multiple_imports(self):
-        b = """import urlparse, cStringIO"""
-        a = """import urllib.parse, io"""
-        self.check(b, a)
-
-    def test_multiple_imports_as(self):
-        b = """
-            import copy_reg as bar, HTMLParser as foo, urlparse
-            s = urlparse.spam(bar.foo())
-            """
-        a = """
-            import copyreg as bar, html.parser as foo, urllib.parse
-            s = urllib.parse.spam(bar.foo())
-            """
-        self.check(b, a)
-
-
-class Test_imports2(FixerTestCase, ImportsFixerTests):
-    fixer = "imports2"
-    from lib2to3.fixes.fix_imports2 import MAPPING as modules
-
-
-class Test_imports_fixer_order(FixerTestCase, ImportsFixerTests):
-
-    def setUp(self):
-        super(Test_imports_fixer_order, self).setUp(['imports', 'imports2'])
-        from lib2to3.fixes.fix_imports2 import MAPPING as mapping2
-        self.modules = mapping2.copy()
-        from lib2to3.fixes.fix_imports import MAPPING as mapping1
-        for key in ('dbhash', 'dumbdbm', 'dbm', 'gdbm'):
-            self.modules[key] = mapping1[key]
-
-    def test_after_local_imports_refactoring(self):
-        for fix in ("imports", "imports2"):
-            self.fixer = fix
-            self.assert_runs_after("import")
-
-
-class Test_urllib(FixerTestCase):
-    fixer = "urllib"
-    from lib2to3.fixes.fix_urllib import MAPPING as modules
-
-    def test_import_module(self):
-        for old, changes in self.modules.items():
-            b = "import %s" % old
-            a = "import %s" % ", ".join(map(itemgetter(0), changes))
-            self.check(b, a)
-
-    def test_import_from(self):
-        for old, changes in self.modules.items():
-            all_members = []
-            for new, members in changes:
-                for member in members:
-                    all_members.append(member)
-                    b = "from %s import %s" % (old, member)
-                    a = "from %s import %s" % (new, member)
-                    self.check(b, a)
-
-                    s = "from foo import %s" % member
-                    self.unchanged(s)
-
-                b = "from %s import %s" % (old, ", ".join(members))
-                a = "from %s import %s" % (new, ", ".join(members))
-                self.check(b, a)
-
-                s = "from foo import %s" % ", ".join(members)
-                self.unchanged(s)
-
-            # test the breaking of a module into multiple replacements
-            b = "from %s import %s" % (old, ", ".join(all_members))
-            a = "\n".join(["from %s import %s" % (new, ", ".join(members))
-                            for (new, members) in changes])
-            self.check(b, a)
-
-    def test_import_module_as(self):
-        for old in self.modules:
-            s = "import %s as foo" % old
-            self.warns_unchanged(s, "This module is now multiple modules")
-
-    def test_import_from_as(self):
-        for old, changes in self.modules.items():
-            for new, members in changes:
-                for member in members:
-                    b = "from %s import %s as foo_bar" % (old, member)
-                    a = "from %s import %s as foo_bar" % (new, member)
-                    self.check(b, a)
-                    b = "from %s import %s as blah, %s" % (old, member, member)
-                    a = "from %s import %s as blah, %s" % (new, member, member)
-                    self.check(b, a)
-
-    def test_star(self):
-        for old in self.modules:
-            s = "from %s import *" % old
-            self.warns_unchanged(s, "Cannot handle star imports")
-
-    def test_indented(self):
-        b = """
-def foo():
-    from urllib import urlencode, urlopen
-"""
-        a = """
-def foo():
-    from urllib.parse import urlencode
-    from urllib.request import urlopen
-"""
-        self.check(b, a)
-
-        b = """
-def foo():
-    other()
-    from urllib import urlencode, urlopen
-"""
-        a = """
-def foo():
-    other()
-    from urllib.parse import urlencode
-    from urllib.request import urlopen
-"""
-        self.check(b, a)
-
-    def test_single_import(self):
-        b = "from urllib import getproxies"
-        a = "from urllib.request import getproxies"
-
-        self.check(b, a)
-
-    def test_import_module_usage(self):
-        for old, changes in self.modules.items():
-            for new, members in changes:
-                for member in members:
-                    new_import = ", ".join([n for (n, mems)
-                                            in self.modules[old]])
-                    b = """
-                        import %s
-                        foo(%s.%s)
-                        """ % (old, old, member)
-                    a = """
-                        import %s
-                        foo(%s.%s)
-                        """ % (new_import, new, member)
-                    self.check(b, a)
-                    b = """
-                        import %s
-                        %s.%s(%s.%s)
-                        """ % (old, old, member, old, member)
-                    a = """
-                        import %s
-                        %s.%s(%s.%s)
-                        """ % (new_import, new, member, new, member)
-                    self.check(b, a)
-
-
-class Test_input(FixerTestCase):
-    fixer = "input"
-
-    def test_prefix_preservation(self):
-        b = """x =   input(   )"""
-        a = """x =   eval(input(   ))"""
-        self.check(b, a)
-
-        b = """x = input(   ''   )"""
-        a = """x = eval(input(   ''   ))"""
-        self.check(b, a)
-
-    def test_trailing_comment(self):
-        b = """x = input()  #  foo"""
-        a = """x = eval(input())  #  foo"""
-        self.check(b, a)
-
-    def test_idempotency(self):
-        s = """x = eval(input())"""
-        self.unchanged(s)
-
-        s = """x = eval(input(''))"""
-        self.unchanged(s)
-
-        s = """x = eval(input(foo(5) + 9))"""
-        self.unchanged(s)
-
-    def test_1(self):
-        b = """x = input()"""
-        a = """x = eval(input())"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """x = input('')"""
-        a = """x = eval(input(''))"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """x = input('prompt')"""
-        a = """x = eval(input('prompt'))"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """x = input(foo(5) + 9)"""
-        a = """x = eval(input(foo(5) + 9))"""
-        self.check(b, a)
-
-class Test_tuple_params(FixerTestCase):
-    fixer = "tuple_params"
-
-    def test_unchanged_1(self):
-        s = """def foo(): pass"""
-        self.unchanged(s)
-
-    def test_unchanged_2(self):
-        s = """def foo(a, b, c): pass"""
-        self.unchanged(s)
-
-    def test_unchanged_3(self):
-        s = """def foo(a=3, b=4, c=5): pass"""
-        self.unchanged(s)
-
-    def test_1(self):
-        b = """
-            def foo(((a, b), c)):
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme):
-                ((a, b), c) = xxx_todo_changeme
-                x = 5"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """
-            def foo(((a, b), c), d):
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme, d):
-                ((a, b), c) = xxx_todo_changeme
-                x = 5"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """
-            def foo(((a, b), c), d) -> e:
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme, d) -> e:
-                ((a, b), c) = xxx_todo_changeme
-                x = 5"""
-        self.check(b, a)
-
-    def test_semicolon(self):
-        b = """
-            def foo(((a, b), c)): x = 5; y = 7"""
-
-        a = """
-            def foo(xxx_todo_changeme): ((a, b), c) = xxx_todo_changeme; x = 5; y = 7"""
-        self.check(b, a)
-
-    def test_keywords(self):
-        b = """
-            def foo(((a, b), c), d, e=5) -> z:
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme, d, e=5) -> z:
-                ((a, b), c) = xxx_todo_changeme
-                x = 5"""
-        self.check(b, a)
-
-    def test_varargs(self):
-        b = """
-            def foo(((a, b), c), d, *vargs, **kwargs) -> z:
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme, d, *vargs, **kwargs) -> z:
-                ((a, b), c) = xxx_todo_changeme
-                x = 5"""
-        self.check(b, a)
-
-    def test_multi_1(self):
-        b = """
-            def foo(((a, b), c), (d, e, f)) -> z:
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme, xxx_todo_changeme1) -> z:
-                ((a, b), c) = xxx_todo_changeme
-                (d, e, f) = xxx_todo_changeme1
-                x = 5"""
-        self.check(b, a)
-
-    def test_multi_2(self):
-        b = """
-            def foo(x, ((a, b), c), d, (e, f, g), y) -> z:
-                x = 5"""
-
-        a = """
-            def foo(x, xxx_todo_changeme, d, xxx_todo_changeme1, y) -> z:
-                ((a, b), c) = xxx_todo_changeme
-                (e, f, g) = xxx_todo_changeme1
-                x = 5"""
-        self.check(b, a)
-
-    def test_docstring(self):
-        b = """
-            def foo(((a, b), c), (d, e, f)) -> z:
-                "foo foo foo foo"
-                x = 5"""
-
-        a = """
-            def foo(xxx_todo_changeme, xxx_todo_changeme1) -> z:
-                "foo foo foo foo"
-                ((a, b), c) = xxx_todo_changeme
-                (d, e, f) = xxx_todo_changeme1
-                x = 5"""
-        self.check(b, a)
-
-    def test_lambda_no_change(self):
-        s = """lambda x: x + 5"""
-        self.unchanged(s)
-
-    def test_lambda_parens_single_arg(self):
-        b = """lambda (x): x + 5"""
-        a = """lambda x: x + 5"""
-        self.check(b, a)
-
-        b = """lambda(x): x + 5"""
-        a = """lambda x: x + 5"""
-        self.check(b, a)
-
-        b = """lambda ((((x)))): x + 5"""
-        a = """lambda x: x + 5"""
-        self.check(b, a)
-
-        b = """lambda((((x)))): x + 5"""
-        a = """lambda x: x + 5"""
-        self.check(b, a)
-
-    def test_lambda_simple(self):
-        b = """lambda (x, y): x + f(y)"""
-        a = """lambda x_y: x_y[0] + f(x_y[1])"""
-        self.check(b, a)
-
-        b = """lambda(x, y): x + f(y)"""
-        a = """lambda x_y: x_y[0] + f(x_y[1])"""
-        self.check(b, a)
-
-        b = """lambda (((x, y))): x + f(y)"""
-        a = """lambda x_y: x_y[0] + f(x_y[1])"""
-        self.check(b, a)
-
-        b = """lambda(((x, y))): x + f(y)"""
-        a = """lambda x_y: x_y[0] + f(x_y[1])"""
-        self.check(b, a)
-
-    def test_lambda_one_tuple(self):
-        b = """lambda (x,): x + f(x)"""
-        a = """lambda x1: x1[0] + f(x1[0])"""
-        self.check(b, a)
-
-        b = """lambda (((x,))): x + f(x)"""
-        a = """lambda x1: x1[0] + f(x1[0])"""
-        self.check(b, a)
-
-    def test_lambda_simple_multi_use(self):
-        b = """lambda (x, y): x + x + f(x) + x"""
-        a = """lambda x_y: x_y[0] + x_y[0] + f(x_y[0]) + x_y[0]"""
-        self.check(b, a)
-
-    def test_lambda_simple_reverse(self):
-        b = """lambda (x, y): y + x"""
-        a = """lambda x_y: x_y[1] + x_y[0]"""
-        self.check(b, a)
-
-    def test_lambda_nested(self):
-        b = """lambda (x, (y, z)): x + y + z"""
-        a = """lambda x_y_z: x_y_z[0] + x_y_z[1][0] + x_y_z[1][1]"""
-        self.check(b, a)
-
-        b = """lambda (((x, (y, z)))): x + y + z"""
-        a = """lambda x_y_z: x_y_z[0] + x_y_z[1][0] + x_y_z[1][1]"""
-        self.check(b, a)
-
-    def test_lambda_nested_multi_use(self):
-        b = """lambda (x, (y, z)): x + y + f(y)"""
-        a = """lambda x_y_z: x_y_z[0] + x_y_z[1][0] + f(x_y_z[1][0])"""
-        self.check(b, a)
-
-class Test_methodattrs(FixerTestCase):
-    fixer = "methodattrs"
-
-    attrs = ["func", "self", "class"]
-
-    def test(self):
-        for attr in self.attrs:
-            b = "a.im_%s" % attr
-            if attr == "class":
-                a = "a.__self__.__class__"
-            else:
-                a = "a.__%s__" % attr
-            self.check(b, a)
-
-            b = "self.foo.im_%s.foo_bar" % attr
-            if attr == "class":
-                a = "self.foo.__self__.__class__.foo_bar"
-            else:
-                a = "self.foo.__%s__.foo_bar" % attr
-            self.check(b, a)
-
-    def test_unchanged(self):
-        for attr in self.attrs:
-            s = "foo(im_%s + 5)" % attr
-            self.unchanged(s)
-
-            s = "f(foo.__%s__)" % attr
-            self.unchanged(s)
-
-            s = "f(foo.__%s__.foo)" % attr
-            self.unchanged(s)
-
-class Test_next(FixerTestCase):
-    fixer = "next"
-
-    def test_1(self):
-        b = """it.next()"""
-        a = """next(it)"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """a.b.c.d.next()"""
-        a = """next(a.b.c.d)"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """(a + b).next()"""
-        a = """next((a + b))"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """a().next()"""
-        a = """next(a())"""
-        self.check(b, a)
-
-    def test_5(self):
-        b = """a().next() + b"""
-        a = """next(a()) + b"""
-        self.check(b, a)
-
-    def test_6(self):
-        b = """c(      a().next() + b)"""
-        a = """c(      next(a()) + b)"""
-        self.check(b, a)
-
-    def test_prefix_preservation_1(self):
-        b = """
-            for a in b:
-                foo(a)
-                a.next()
-            """
-        a = """
-            for a in b:
-                foo(a)
-                next(a)
-            """
-        self.check(b, a)
-
-    def test_prefix_preservation_2(self):
-        b = """
-            for a in b:
-                foo(a) # abc
-                # def
-                a.next()
-            """
-        a = """
-            for a in b:
-                foo(a) # abc
-                # def
-                next(a)
-            """
-        self.check(b, a)
-
-    def test_prefix_preservation_3(self):
-        b = """
-            next = 5
-            for a in b:
-                foo(a)
-                a.next()
-            """
-        a = """
-            next = 5
-            for a in b:
-                foo(a)
-                a.__next__()
-            """
-        self.check(b, a, ignore_warnings=True)
-
-    def test_prefix_preservation_4(self):
-        b = """
-            next = 5
-            for a in b:
-                foo(a) # abc
-                # def
-                a.next()
-            """
-        a = """
-            next = 5
-            for a in b:
-                foo(a) # abc
-                # def
-                a.__next__()
-            """
-        self.check(b, a, ignore_warnings=True)
-
-    def test_prefix_preservation_5(self):
-        b = """
-            next = 5
-            for a in b:
-                foo(foo(a), # abc
-                    a.next())
-            """
-        a = """
-            next = 5
-            for a in b:
-                foo(foo(a), # abc
-                    a.__next__())
-            """
-        self.check(b, a, ignore_warnings=True)
-
-    def test_prefix_preservation_6(self):
-        b = """
-            for a in b:
-                foo(foo(a), # abc
-                    a.next())
-            """
-        a = """
-            for a in b:
-                foo(foo(a), # abc
-                    next(a))
-            """
-        self.check(b, a)
-
-    def test_method_1(self):
-        b = """
-            class A:
-                def next(self):
-                    pass
-            """
-        a = """
-            class A:
-                def __next__(self):
-                    pass
-            """
-        self.check(b, a)
-
-    def test_method_2(self):
-        b = """
-            class A(object):
-                def next(self):
-                    pass
-            """
-        a = """
-            class A(object):
-                def __next__(self):
-                    pass
-            """
-        self.check(b, a)
-
-    def test_method_3(self):
-        b = """
-            class A:
-                def next(x):
-                    pass
-            """
-        a = """
-            class A:
-                def __next__(x):
-                    pass
-            """
-        self.check(b, a)
-
-    def test_method_4(self):
-        b = """
-            class A:
-                def __init__(self, foo):
-                    self.foo = foo
-
-                def next(self):
-                    pass
-
-                def __iter__(self):
-                    return self
-            """
-        a = """
-            class A:
-                def __init__(self, foo):
-                    self.foo = foo
-
-                def __next__(self):
-                    pass
-
-                def __iter__(self):
-                    return self
-            """
-        self.check(b, a)
-
-    def test_method_unchanged(self):
-        s = """
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.unchanged(s)
-
-    def test_shadowing_assign_simple(self):
-        s = """
-            next = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_assign_tuple_1(self):
-        s = """
-            (next, a) = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_assign_tuple_2(self):
-        s = """
-            (a, (b, (next, c)), a) = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_assign_list_1(self):
-        s = """
-            [next, a] = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_assign_list_2(self):
-        s = """
-            [a, [b, [next, c]], a] = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_builtin_assign(self):
-        s = """
-            def foo():
-                __builtin__.next = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_builtin_assign_in_tuple(self):
-        s = """
-            def foo():
-                (a, __builtin__.next) = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_builtin_assign_in_list(self):
-        s = """
-            def foo():
-                [a, __builtin__.next] = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_assign_to_next(self):
-        s = """
-            def foo():
-                A.next = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.unchanged(s)
-
-    def test_assign_to_next_in_tuple(self):
-        s = """
-            def foo():
-                (a, A.next) = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.unchanged(s)
-
-    def test_assign_to_next_in_list(self):
-        s = """
-            def foo():
-                [a, A.next] = foo
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.unchanged(s)
-
-    def test_shadowing_import_1(self):
-        s = """
-            import foo.bar as next
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_import_2(self):
-        s = """
-            import bar, bar.foo as next
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_import_3(self):
-        s = """
-            import bar, bar.foo as next, baz
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_import_from_1(self):
-        s = """
-            from x import next
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_import_from_2(self):
-        s = """
-            from x.a import next
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_import_from_3(self):
-        s = """
-            from x import a, next, b
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_import_from_4(self):
-        s = """
-            from x.a import a, next, b
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_funcdef_1(self):
-        s = """
-            def next(a):
-                pass
-
-            class A:
-                def next(self, a, b):
-                    pass
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_funcdef_2(self):
-        b = """
-            def next(a):
-                pass
-
-            class A:
-                def next(self):
-                    pass
-
-            it.next()
-            """
-        a = """
-            def next(a):
-                pass
-
-            class A:
-                def __next__(self):
-                    pass
-
-            it.__next__()
-            """
-        self.warns(b, a, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_global_1(self):
-        s = """
-            def f():
-                global next
-                next = 5
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_global_2(self):
-        s = """
-            def f():
-                global a, next, b
-                next = 5
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_for_simple(self):
-        s = """
-            for next in it():
-                pass
-
-            b = 5
-            c = 6
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_for_tuple_1(self):
-        s = """
-            for next, b in it():
-                pass
-
-            b = 5
-            c = 6
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_shadowing_for_tuple_2(self):
-        s = """
-            for a, (next, c), b in it():
-                pass
-
-            b = 5
-            c = 6
-            """
-        self.warns_unchanged(s, "Calls to builtin next() possibly shadowed")
-
-    def test_noncall_access_1(self):
-        b = """gnext = g.next"""
-        a = """gnext = g.__next__"""
-        self.check(b, a)
-
-    def test_noncall_access_2(self):
-        b = """f(g.next + 5)"""
-        a = """f(g.__next__ + 5)"""
-        self.check(b, a)
-
-    def test_noncall_access_3(self):
-        b = """f(g().next + 5)"""
-        a = """f(g().__next__ + 5)"""
-        self.check(b, a)
-
-class Test_nonzero(FixerTestCase):
-    fixer = "nonzero"
-
-    def test_1(self):
-        b = """
-            class A:
-                def __nonzero__(self):
-                    pass
-            """
-        a = """
-            class A:
-                def __bool__(self):
-                    pass
-            """
-        self.check(b, a)
-
-    def test_2(self):
-        b = """
-            class A(object):
-                def __nonzero__(self):
-                    pass
-            """
-        a = """
-            class A(object):
-                def __bool__(self):
-                    pass
-            """
-        self.check(b, a)
-
-    def test_unchanged_1(self):
-        s = """
-            class A(object):
-                def __bool__(self):
-                    pass
-            """
-        self.unchanged(s)
-
-    def test_unchanged_2(self):
-        s = """
-            class A(object):
-                def __nonzero__(self, a):
-                    pass
-            """
-        self.unchanged(s)
-
-    def test_unchanged_func(self):
-        s = """
-            def __nonzero__(self):
-                pass
-            """
-        self.unchanged(s)
-
-class Test_numliterals(FixerTestCase):
-    fixer = "numliterals"
-
-    def test_octal_1(self):
-        b = """0755"""
-        a = """0o755"""
-        self.check(b, a)
-
-    def test_long_int_1(self):
-        b = """a = 12L"""
-        a = """a = 12"""
-        self.check(b, a)
-
-    def test_long_int_2(self):
-        b = """a = 12l"""
-        a = """a = 12"""
-        self.check(b, a)
-
-    def test_long_hex(self):
-        b = """b = 0x12l"""
-        a = """b = 0x12"""
-        self.check(b, a)
-
-    def test_comments_and_spacing(self):
-        b = """b =   0x12L"""
-        a = """b =   0x12"""
-        self.check(b, a)
-
-        b = """b = 0755 # spam"""
-        a = """b = 0o755 # spam"""
-        self.check(b, a)
-
-    def test_unchanged_int(self):
-        s = """5"""
-        self.unchanged(s)
-
-    def test_unchanged_float(self):
-        s = """5.0"""
-        self.unchanged(s)
-
-    def test_unchanged_octal(self):
-        s = """0o755"""
-        self.unchanged(s)
-
-    def test_unchanged_hex(self):
-        s = """0xABC"""
-        self.unchanged(s)
-
-    def test_unchanged_exp(self):
-        s = """5.0e10"""
-        self.unchanged(s)
-
-    def test_unchanged_complex_int(self):
-        s = """5 + 4j"""
-        self.unchanged(s)
-
-    def test_unchanged_complex_float(self):
-        s = """5.4 + 4.9j"""
-        self.unchanged(s)
-
-    def test_unchanged_complex_bare(self):
-        s = """4j"""
-        self.unchanged(s)
-        s = """4.4j"""
-        self.unchanged(s)
-
-class Test_renames(FixerTestCase):
-    fixer = "renames"
-
-    modules = {"sys":  ("maxint", "maxsize"),
-              }
-
-    def test_import_from(self):
-        for mod, (old, new) in list(self.modules.items()):
-            b = "from %s import %s" % (mod, old)
-            a = "from %s import %s" % (mod, new)
-            self.check(b, a)
-
-            s = "from foo import %s" % old
-            self.unchanged(s)
-
-    def test_import_from_as(self):
-        for mod, (old, new) in list(self.modules.items()):
-            b = "from %s import %s as foo_bar" % (mod, old)
-            a = "from %s import %s as foo_bar" % (mod, new)
-            self.check(b, a)
-
-    def test_import_module_usage(self):
-        for mod, (old, new) in list(self.modules.items()):
-            b = """
-                import %s
-                foo(%s, %s.%s)
-                """ % (mod, mod, mod, old)
-            a = """
-                import %s
-                foo(%s, %s.%s)
-                """ % (mod, mod, mod, new)
-            self.check(b, a)
-
-    def XXX_test_from_import_usage(self):
-        # not implemented yet
-        for mod, (old, new) in list(self.modules.items()):
-            b = """
-                from %s import %s
-                foo(%s, %s)
-                """ % (mod, old, mod, old)
-            a = """
-                from %s import %s
-                foo(%s, %s)
-                """ % (mod, new, mod, new)
-            self.check(b, a)
-
-class Test_unicode(FixerTestCase):
-    fixer = "unicode"
-
-    def test_whitespace(self):
-        b = """unicode( x)"""
-        a = """str( x)"""
-        self.check(b, a)
-
-        b = """ unicode(x )"""
-        a = """ str(x )"""
-        self.check(b, a)
-
-        b = """ u'h'"""
-        a = """ 'h'"""
-        self.check(b, a)
-
-    def test_unicode_call(self):
-        b = """unicode(x, y, z)"""
-        a = """str(x, y, z)"""
-        self.check(b, a)
-
-    def test_unichr(self):
-        b = """unichr(u'h')"""
-        a = """chr('h')"""
-        self.check(b, a)
-
-    def test_unicode_literal_1(self):
-        b = '''u"x"'''
-        a = '''"x"'''
-        self.check(b, a)
-
-    def test_unicode_literal_2(self):
-        b = """ur'x'"""
-        a = """r'x'"""
-        self.check(b, a)
-
-    def test_unicode_literal_3(self):
-        b = """UR'''x''' """
-        a = """R'''x''' """
-        self.check(b, a)
-
-    def test_native_literal_escape_u(self):
-        b = r"""'\\\u20ac\U0001d121\\u20ac'"""
-        a = r"""'\\\\u20ac\\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-        b = r"""r'\\\u20ac\U0001d121\\u20ac'"""
-        a = r"""r'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-    def test_bytes_literal_escape_u(self):
-        b = r"""b'\\\u20ac\U0001d121\\u20ac'"""
-        a = r"""b'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-        b = r"""br'\\\u20ac\U0001d121\\u20ac'"""
-        a = r"""br'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-    def test_unicode_literal_escape_u(self):
-        b = r"""u'\\\u20ac\U0001d121\\u20ac'"""
-        a = r"""'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-        b = r"""ur'\\\u20ac\U0001d121\\u20ac'"""
-        a = r"""r'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-    def test_native_unicode_literal_escape_u(self):
-        f = 'from __future__ import unicode_literals\n'
-        b = f + r"""'\\\u20ac\U0001d121\\u20ac'"""
-        a = f + r"""'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-        b = f + r"""r'\\\u20ac\U0001d121\\u20ac'"""
-        a = f + r"""r'\\\u20ac\U0001d121\\u20ac'"""
-        self.check(b, a)
-
-
-class Test_filter(FixerTestCase):
-    fixer = "filter"
-
-    def test_prefix_preservation(self):
-        b = """x =   filter(    foo,     'abc'   )"""
-        a = """x =   list(filter(    foo,     'abc'   ))"""
-        self.check(b, a)
-
-        b = """x =   filter(  None , 'abc'  )"""
-        a = """x =   [_f for _f in 'abc' if _f]"""
-        self.check(b, a)
-
-    def test_filter_basic(self):
-        b = """x = filter(None, 'abc')"""
-        a = """x = [_f for _f in 'abc' if _f]"""
-        self.check(b, a)
-
-        b = """x = len(filter(f, 'abc'))"""
-        a = """x = len(list(filter(f, 'abc')))"""
-        self.check(b, a)
-
-        b = """x = filter(lambda x: x%2 == 0, range(10))"""
-        a = """x = [x for x in range(10) if x%2 == 0]"""
-        self.check(b, a)
-
-        # Note the parens around x
-        b = """x = filter(lambda (x): x%2 == 0, range(10))"""
-        a = """x = [x for x in range(10) if x%2 == 0]"""
-        self.check(b, a)
-
-        # bpo-38871
-        b = """filter(lambda x: True if x > 2 else False, [1, 2, 3])"""
-        a = """[x for x in [1, 2, 3] if (True if x > 2 else False)]"""
-        self.check(b, a)
-
-    def test_filter_trailers(self):
-        b = """x = filter(None, 'abc')[0]"""
-        a = """x = [_f for _f in 'abc' if _f][0]"""
-        self.check(b, a)
-
-        b = """x = len(filter(f, 'abc')[0])"""
-        a = """x = len(list(filter(f, 'abc'))[0])"""
-        self.check(b, a)
-
-        b = """x = filter(lambda x: x%2 == 0, range(10))[0]"""
-        a = """x = [x for x in range(10) if x%2 == 0][0]"""
-        self.check(b, a)
-
-        # Note the parens around x
-        b = """x = filter(lambda (x): x%2 == 0, range(10))[0]"""
-        a = """x = [x for x in range(10) if x%2 == 0][0]"""
-        self.check(b, a)
-
-    def test_filter_nochange(self):
-        a = """b.join(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """(a + foo(5)).join(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """iter(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """list(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """list(filter(f, 'abc'))[0]"""
-        self.unchanged(a)
-        a = """set(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """set(filter(f, 'abc')).pop()"""
-        self.unchanged(a)
-        a = """tuple(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """any(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """all(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """sum(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """sorted(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """sorted(filter(f, 'abc'), key=blah)"""
-        self.unchanged(a)
-        a = """sorted(filter(f, 'abc'), key=blah)[0]"""
-        self.unchanged(a)
-        a = """enumerate(filter(f, 'abc'))"""
-        self.unchanged(a)
-        a = """enumerate(filter(f, 'abc'), start=1)"""
-        self.unchanged(a)
-        a = """for i in filter(f, 'abc'): pass"""
-        self.unchanged(a)
-        a = """[x for x in filter(f, 'abc')]"""
-        self.unchanged(a)
-        a = """(x for x in filter(f, 'abc'))"""
-        self.unchanged(a)
-
-    def test_future_builtins(self):
-        a = "from future_builtins import spam, filter; filter(f, 'ham')"
-        self.unchanged(a)
-
-        b = """from future_builtins import spam; x = filter(f, 'abc')"""
-        a = """from future_builtins import spam; x = list(filter(f, 'abc'))"""
-        self.check(b, a)
-
-        a = "from future_builtins import *; filter(f, 'ham')"
-        self.unchanged(a)
-
-class Test_map(FixerTestCase):
-    fixer = "map"
-
-    def check(self, b, a):
-        self.unchanged("from future_builtins import map; " + b, a)
-        super(Test_map, self).check(b, a)
-
-    def test_prefix_preservation(self):
-        b = """x =    map(   f,    'abc'   )"""
-        a = """x =    list(map(   f,    'abc'   ))"""
-        self.check(b, a)
-
-    def test_map_trailers(self):
-        b = """x = map(f, 'abc')[0]"""
-        a = """x = list(map(f, 'abc'))[0]"""
-        self.check(b, a)
-
-        b = """x = map(None, l)[0]"""
-        a = """x = list(l)[0]"""
-        self.check(b, a)
-
-        b = """x = map(lambda x:x, l)[0]"""
-        a = """x = [x for x in l][0]"""
-        self.check(b, a)
-
-        b = """x = map(f, 'abc')[0][1]"""
-        a = """x = list(map(f, 'abc'))[0][1]"""
-        self.check(b, a)
-
-    def test_trailing_comment(self):
-        b = """x = map(f, 'abc')   #   foo"""
-        a = """x = list(map(f, 'abc'))   #   foo"""
-        self.check(b, a)
-
-    def test_None_with_multiple_arguments(self):
-        s = """x = map(None, a, b, c)"""
-        self.warns_unchanged(s, "cannot convert map(None, ...) with "
-                             "multiple arguments")
-
-    def test_map_basic(self):
-        b = """x = map(f, 'abc')"""
-        a = """x = list(map(f, 'abc'))"""
-        self.check(b, a)
-
-        b = """x = len(map(f, 'abc', 'def'))"""
-        a = """x = len(list(map(f, 'abc', 'def')))"""
-        self.check(b, a)
-
-        b = """x = map(None, 'abc')"""
-        a = """x = list('abc')"""
-        self.check(b, a)
-
-        b = """x = map(lambda x: x+1, range(4))"""
-        a = """x = [x+1 for x in range(4)]"""
-        self.check(b, a)
-
-        # Note the parens around x
-        b = """x = map(lambda (x): x+1, range(4))"""
-        a = """x = [x+1 for x in range(4)]"""
-        self.check(b, a)
-
-        b = """
-            foo()
-            # foo
-            map(f, x)
-            """
-        a = """
-            foo()
-            # foo
-            list(map(f, x))
-            """
-        self.warns(b, a, "You should use a for loop here")
-
-    def test_map_nochange(self):
-        a = """b.join(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """(a + foo(5)).join(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """iter(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """list(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """list(map(f, 'abc'))[0]"""
-        self.unchanged(a)
-        a = """set(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """set(map(f, 'abc')).pop()"""
-        self.unchanged(a)
-        a = """tuple(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """any(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """all(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """sum(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """sorted(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """sorted(map(f, 'abc'), key=blah)"""
-        self.unchanged(a)
-        a = """sorted(map(f, 'abc'), key=blah)[0]"""
-        self.unchanged(a)
-        a = """enumerate(map(f, 'abc'))"""
-        self.unchanged(a)
-        a = """enumerate(map(f, 'abc'), start=1)"""
-        self.unchanged(a)
-        a = """for i in map(f, 'abc'): pass"""
-        self.unchanged(a)
-        a = """[x for x in map(f, 'abc')]"""
-        self.unchanged(a)
-        a = """(x for x in map(f, 'abc'))"""
-        self.unchanged(a)
-
-    def test_future_builtins(self):
-        a = "from future_builtins import spam, map, eggs; map(f, 'ham')"
-        self.unchanged(a)
-
-        b = """from future_builtins import spam, eggs; x = map(f, 'abc')"""
-        a = """from future_builtins import spam, eggs; x = list(map(f, 'abc'))"""
-        self.check(b, a)
-
-        a = "from future_builtins import *; map(f, 'ham')"
-        self.unchanged(a)
-
-class Test_zip(FixerTestCase):
-    fixer = "zip"
-
-    def check(self, b, a):
-        self.unchanged("from future_builtins import zip; " + b, a)
-        super(Test_zip, self).check(b, a)
-
-    def test_zip_basic(self):
-        b = """x = zip()"""
-        a = """x = list(zip())"""
-        self.check(b, a)
-
-        b = """x = zip(a, b, c)"""
-        a = """x = list(zip(a, b, c))"""
-        self.check(b, a)
-
-        b = """x = len(zip(a, b))"""
-        a = """x = len(list(zip(a, b)))"""
-        self.check(b, a)
-
-    def test_zip_trailers(self):
-        b = """x = zip(a, b, c)[0]"""
-        a = """x = list(zip(a, b, c))[0]"""
-        self.check(b, a)
-
-        b = """x = zip(a, b, c)[0][1]"""
-        a = """x = list(zip(a, b, c))[0][1]"""
-        self.check(b, a)
-
-    def test_zip_nochange(self):
-        a = """b.join(zip(a, b))"""
-        self.unchanged(a)
-        a = """(a + foo(5)).join(zip(a, b))"""
-        self.unchanged(a)
-        a = """iter(zip(a, b))"""
-        self.unchanged(a)
-        a = """list(zip(a, b))"""
-        self.unchanged(a)
-        a = """list(zip(a, b))[0]"""
-        self.unchanged(a)
-        a = """set(zip(a, b))"""
-        self.unchanged(a)
-        a = """set(zip(a, b)).pop()"""
-        self.unchanged(a)
-        a = """tuple(zip(a, b))"""
-        self.unchanged(a)
-        a = """any(zip(a, b))"""
-        self.unchanged(a)
-        a = """all(zip(a, b))"""
-        self.unchanged(a)
-        a = """sum(zip(a, b))"""
-        self.unchanged(a)
-        a = """sorted(zip(a, b))"""
-        self.unchanged(a)
-        a = """sorted(zip(a, b), key=blah)"""
-        self.unchanged(a)
-        a = """sorted(zip(a, b), key=blah)[0]"""
-        self.unchanged(a)
-        a = """enumerate(zip(a, b))"""
-        self.unchanged(a)
-        a = """enumerate(zip(a, b), start=1)"""
-        self.unchanged(a)
-        a = """for i in zip(a, b): pass"""
-        self.unchanged(a)
-        a = """[x for x in zip(a, b)]"""
-        self.unchanged(a)
-        a = """(x for x in zip(a, b))"""
-        self.unchanged(a)
-
-    def test_future_builtins(self):
-        a = "from future_builtins import spam, zip, eggs; zip(a, b)"
-        self.unchanged(a)
-
-        b = """from future_builtins import spam, eggs; x = zip(a, b)"""
-        a = """from future_builtins import spam, eggs; x = list(zip(a, b))"""
-        self.check(b, a)
-
-        a = "from future_builtins import *; zip(a, b)"
-        self.unchanged(a)
-
-class Test_standarderror(FixerTestCase):
-    fixer = "standarderror"
-
-    def test(self):
-        b = """x =    StandardError()"""
-        a = """x =    Exception()"""
-        self.check(b, a)
-
-        b = """x = StandardError(a, b, c)"""
-        a = """x = Exception(a, b, c)"""
-        self.check(b, a)
-
-        b = """f(2 + StandardError(a, b, c))"""
-        a = """f(2 + Exception(a, b, c))"""
-        self.check(b, a)
-
-class Test_types(FixerTestCase):
-    fixer = "types"
-
-    def test_basic_types_convert(self):
-        b = """types.StringType"""
-        a = """bytes"""
-        self.check(b, a)
-
-        b = """types.DictType"""
-        a = """dict"""
-        self.check(b, a)
-
-        b = """types . IntType"""
-        a = """int"""
-        self.check(b, a)
-
-        b = """types.ListType"""
-        a = """list"""
-        self.check(b, a)
-
-        b = """types.LongType"""
-        a = """int"""
-        self.check(b, a)
-
-        b = """types.NoneType"""
-        a = """type(None)"""
-        self.check(b, a)
-
-        b = "types.StringTypes"
-        a = "(str,)"
-        self.check(b, a)
-
-class Test_idioms(FixerTestCase):
-    fixer = "idioms"
-
-    def test_while(self):
-        b = """while 1: foo()"""
-        a = """while True: foo()"""
-        self.check(b, a)
-
-        b = """while   1: foo()"""
-        a = """while   True: foo()"""
-        self.check(b, a)
-
-        b = """
-            while 1:
-                foo()
-            """
-        a = """
-            while True:
-                foo()
-            """
-        self.check(b, a)
-
-    def test_while_unchanged(self):
-        s = """while 11: foo()"""
-        self.unchanged(s)
-
-        s = """while 0: foo()"""
-        self.unchanged(s)
-
-        s = """while foo(): foo()"""
-        self.unchanged(s)
-
-        s = """while []: foo()"""
-        self.unchanged(s)
-
-    def test_eq_simple(self):
-        b = """type(x) == T"""
-        a = """isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   type(x) == T: pass"""
-        a = """if   isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_eq_reverse(self):
-        b = """T == type(x)"""
-        a = """isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   T == type(x): pass"""
-        a = """if   isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_eq_expression(self):
-        b = """type(x+y) == d.get('T')"""
-        a = """isinstance(x+y, d.get('T'))"""
-        self.check(b, a)
-
-        b = """type(   x  +  y) == d.get('T')"""
-        a = """isinstance(x  +  y, d.get('T'))"""
-        self.check(b, a)
-
-    def test_is_simple(self):
-        b = """type(x) is T"""
-        a = """isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   type(x) is T: pass"""
-        a = """if   isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_is_reverse(self):
-        b = """T is type(x)"""
-        a = """isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   T is type(x): pass"""
-        a = """if   isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_is_expression(self):
-        b = """type(x+y) is d.get('T')"""
-        a = """isinstance(x+y, d.get('T'))"""
-        self.check(b, a)
-
-        b = """type(   x  +  y) is d.get('T')"""
-        a = """isinstance(x  +  y, d.get('T'))"""
-        self.check(b, a)
-
-    def test_is_not_simple(self):
-        b = """type(x) is not T"""
-        a = """not isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   type(x) is not T: pass"""
-        a = """if   not isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_is_not_reverse(self):
-        b = """T is not type(x)"""
-        a = """not isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   T is not type(x): pass"""
-        a = """if   not isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_is_not_expression(self):
-        b = """type(x+y) is not d.get('T')"""
-        a = """not isinstance(x+y, d.get('T'))"""
-        self.check(b, a)
-
-        b = """type(   x  +  y) is not d.get('T')"""
-        a = """not isinstance(x  +  y, d.get('T'))"""
-        self.check(b, a)
-
-    def test_ne_simple(self):
-        b = """type(x) != T"""
-        a = """not isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   type(x) != T: pass"""
-        a = """if   not isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_ne_reverse(self):
-        b = """T != type(x)"""
-        a = """not isinstance(x, T)"""
-        self.check(b, a)
-
-        b = """if   T != type(x): pass"""
-        a = """if   not isinstance(x, T): pass"""
-        self.check(b, a)
-
-    def test_ne_expression(self):
-        b = """type(x+y) != d.get('T')"""
-        a = """not isinstance(x+y, d.get('T'))"""
-        self.check(b, a)
-
-        b = """type(   x  +  y) != d.get('T')"""
-        a = """not isinstance(x  +  y, d.get('T'))"""
-        self.check(b, a)
-
-    def test_type_unchanged(self):
-        a = """type(x).__name__"""
-        self.unchanged(a)
-
-    def test_sort_list_call(self):
-        b = """
-            v = list(t)
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(t)
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            v = list(foo(b) + d)
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(foo(b) + d)
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            while x:
-                v = list(t)
-                v.sort()
-                foo(v)
-            """
-        a = """
-            while x:
-                v = sorted(t)
-                foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            v = list(t)
-            # foo
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(t)
-            # foo
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = r"""
-            v = list(   t)
-            v.sort()
-            foo(v)
-            """
-        a = r"""
-            v = sorted(   t)
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = r"""
-            try:
-                m = list(s)
-                m.sort()
-            except: pass
-            """
-
-        a = r"""
-            try:
-                m = sorted(s)
-            except: pass
-            """
-        self.check(b, a)
-
-        b = r"""
-            try:
-                m = list(s)
-                # foo
-                m.sort()
-            except: pass
-            """
-
-        a = r"""
-            try:
-                m = sorted(s)
-                # foo
-            except: pass
-            """
-        self.check(b, a)
-
-        b = r"""
-            m = list(s)
-            # more comments
-            m.sort()"""
-
-        a = r"""
-            m = sorted(s)
-            # more comments"""
-        self.check(b, a)
-
-    def test_sort_simple_expr(self):
-        b = """
-            v = t
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(t)
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            v = foo(b)
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(foo(b))
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            v = b.keys()
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(b.keys())
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            v = foo(b) + d
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(foo(b) + d)
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            while x:
-                v = t
-                v.sort()
-                foo(v)
-            """
-        a = """
-            while x:
-                v = sorted(t)
-                foo(v)
-            """
-        self.check(b, a)
-
-        b = """
-            v = t
-            # foo
-            v.sort()
-            foo(v)
-            """
-        a = """
-            v = sorted(t)
-            # foo
-            foo(v)
-            """
-        self.check(b, a)
-
-        b = r"""
-            v =   t
-            v.sort()
-            foo(v)
-            """
-        a = r"""
-            v =   sorted(t)
-            foo(v)
-            """
-        self.check(b, a)
-
-    def test_sort_unchanged(self):
-        s = """
-            v = list(t)
-            w.sort()
-            foo(w)
-            """
-        self.unchanged(s)
-
-        s = """
-            v = list(t)
-            v.sort(u)
-            foo(v)
-            """
-        self.unchanged(s)
-
-class Test_basestring(FixerTestCase):
-    fixer = "basestring"
-
-    def test_basestring(self):
-        b = """isinstance(x, basestring)"""
-        a = """isinstance(x, str)"""
-        self.check(b, a)
-
-class Test_buffer(FixerTestCase):
-    fixer = "buffer"
-
-    def test_buffer(self):
-        b = """x = buffer(y)"""
-        a = """x = memoryview(y)"""
-        self.check(b, a)
-
-    def test_slicing(self):
-        b = """buffer(y)[4:5]"""
-        a = """memoryview(y)[4:5]"""
-        self.check(b, a)
-
-class Test_future(FixerTestCase):
-    fixer = "future"
-
-    def test_future(self):
-        b = """from __future__ import braces"""
-        a = """"""
-        self.check(b, a)
-
-        b = """# comment\nfrom __future__ import braces"""
-        a = """# comment\n"""
-        self.check(b, a)
-
-        b = """from __future__ import braces\n# comment"""
-        a = """\n# comment"""
-        self.check(b, a)
-
-    def test_run_order(self):
-        self.assert_runs_after('print')
-
-class Test_itertools(FixerTestCase):
-    fixer = "itertools"
-
-    def checkall(self, before, after):
-        # Because we need to check with and without the itertools prefix
-        # and on each of the three functions, these loops make it all
-        # much easier
-        for i in ('itertools.', ''):
-            for f in ('map', 'filter', 'zip'):
-                b = before %(i+'i'+f)
-                a = after %(f)
-                self.check(b, a)
-
-    def test_0(self):
-        # A simple example -- test_1 covers exactly the same thing,
-        # but it's not quite as clear.
-        b = "itertools.izip(a, b)"
-        a = "zip(a, b)"
-        self.check(b, a)
-
-    def test_1(self):
-        b = """%s(f, a)"""
-        a = """%s(f, a)"""
-        self.checkall(b, a)
-
-    def test_qualified(self):
-        b = """itertools.ifilterfalse(a, b)"""
-        a = """itertools.filterfalse(a, b)"""
-        self.check(b, a)
-
-        b = """itertools.izip_longest(a, b)"""
-        a = """itertools.zip_longest(a, b)"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """ifilterfalse(a, b)"""
-        a = """filterfalse(a, b)"""
-        self.check(b, a)
-
-        b = """izip_longest(a, b)"""
-        a = """zip_longest(a, b)"""
-        self.check(b, a)
-
-    def test_space_1(self):
-        b = """    %s(f, a)"""
-        a = """    %s(f, a)"""
-        self.checkall(b, a)
-
-    def test_space_2(self):
-        b = """    itertools.ifilterfalse(a, b)"""
-        a = """    itertools.filterfalse(a, b)"""
-        self.check(b, a)
-
-        b = """    itertools.izip_longest(a, b)"""
-        a = """    itertools.zip_longest(a, b)"""
-        self.check(b, a)
-
-    def test_run_order(self):
-        self.assert_runs_after('map', 'zip', 'filter')
-
-
-class Test_itertools_imports(FixerTestCase):
-    fixer = 'itertools_imports'
-
-    def test_reduced(self):
-        b = "from itertools import imap, izip, foo"
-        a = "from itertools import foo"
-        self.check(b, a)
-
-        b = "from itertools import bar, imap, izip, foo"
-        a = "from itertools import bar, foo"
-        self.check(b, a)
-
-        b = "from itertools import chain, imap, izip"
-        a = "from itertools import chain"
-        self.check(b, a)
-
-    def test_comments(self):
-        b = "#foo\nfrom itertools import imap, izip"
-        a = "#foo\n"
-        self.check(b, a)
-
-    def test_none(self):
-        b = "from itertools import imap, izip"
-        a = ""
-        self.check(b, a)
-
-        b = "from itertools import izip"
-        a = ""
-        self.check(b, a)
-
-    def test_import_as(self):
-        b = "from itertools import izip, bar as bang, imap"
-        a = "from itertools import bar as bang"
-        self.check(b, a)
-
-        b = "from itertools import izip as _zip, imap, bar"
-        a = "from itertools import bar"
-        self.check(b, a)
-
-        b = "from itertools import imap as _map"
-        a = ""
-        self.check(b, a)
-
-        b = "from itertools import imap as _map, izip as _zip"
-        a = ""
-        self.check(b, a)
-
-        s = "from itertools import bar as bang"
-        self.unchanged(s)
-
-    def test_ifilter_and_zip_longest(self):
-        for name in "filterfalse", "zip_longest":
-            b = "from itertools import i%s" % (name,)
-            a = "from itertools import %s" % (name,)
-            self.check(b, a)
-
-            b = "from itertools import imap, i%s, foo" % (name,)
-            a = "from itertools import %s, foo" % (name,)
-            self.check(b, a)
-
-            b = "from itertools import bar, i%s, foo" % (name,)
-            a = "from itertools import bar, %s, foo" % (name,)
-            self.check(b, a)
-
-    def test_import_star(self):
-        s = "from itertools import *"
-        self.unchanged(s)
-
-
-    def test_unchanged(self):
-        s = "from itertools import foo"
-        self.unchanged(s)
-
-
-class Test_import(FixerTestCase):
-    fixer = "import"
-
-    def setUp(self):
-        super(Test_import, self).setUp()
-        # Need to replace fix_import's exists method
-        # so we can check that it's doing the right thing
-        self.files_checked = []
-        self.present_files = set()
-        self.always_exists = True
-        def fake_exists(name):
-            self.files_checked.append(name)
-            return self.always_exists or (name in self.present_files)
-
-        from lib2to3.fixes import fix_import
-        fix_import.exists = fake_exists
-
-    def tearDown(self):
-        from lib2to3.fixes import fix_import
-        fix_import.exists = os.path.exists
-
-    def check_both(self, b, a):
-        self.always_exists = True
-        super(Test_import, self).check(b, a)
-        self.always_exists = False
-        super(Test_import, self).unchanged(b)
-
-    def test_files_checked(self):
-        def p(path):
-            # Takes a unix path and returns a path with correct separators
-            return os.path.pathsep.join(path.split("/"))
-
-        self.always_exists = False
-        self.present_files = set(['__init__.py'])
-        expected_extensions = ('.py', os.path.sep, '.pyc', '.so', '.sl', '.pyd')
-        names_to_test = (p("/spam/eggs.py"), "ni.py", p("../../shrubbery.py"))
-
-        for name in names_to_test:
-            self.files_checked = []
-            self.filename = name
-            self.unchanged("import jam")
-
-            if os.path.dirname(name):
-                name = os.path.dirname(name) + '/jam'
-            else:
-                name = 'jam'
-            expected_checks = set(name + ext for ext in expected_extensions)
-            expected_checks.add("__init__.py")
-
-            self.assertEqual(set(self.files_checked), expected_checks)
-
-    def test_not_in_package(self):
-        s = "import bar"
-        self.always_exists = False
-        self.present_files = set(["bar.py"])
-        self.unchanged(s)
-
-    def test_with_absolute_import_enabled(self):
-        s = "from __future__ import absolute_import\nimport bar"
-        self.always_exists = False
-        self.present_files = set(["__init__.py", "bar.py"])
-        self.unchanged(s)
-
-    def test_in_package(self):
-        b = "import bar"
-        a = "from . import bar"
-        self.always_exists = False
-        self.present_files = set(["__init__.py", "bar.py"])
-        self.check(b, a)
-
-    def test_import_from_package(self):
-        b = "import bar"
-        a = "from . import bar"
-        self.always_exists = False
-        self.present_files = set(["__init__.py", "bar" + os.path.sep])
-        self.check(b, a)
-
-    def test_already_relative_import(self):
-        s = "from . import bar"
-        self.unchanged(s)
-
-    def test_comments_and_indent(self):
-        b = "import bar # Foo"
-        a = "from . import bar # Foo"
-        self.check(b, a)
-
-    def test_from(self):
-        b = "from foo import bar, baz"
-        a = "from .foo import bar, baz"
-        self.check_both(b, a)
-
-        b = "from foo import bar"
-        a = "from .foo import bar"
-        self.check_both(b, a)
-
-        b = "from foo import (bar, baz)"
-        a = "from .foo import (bar, baz)"
-        self.check_both(b, a)
-
-    def test_dotted_from(self):
-        b = "from green.eggs import ham"
-        a = "from .green.eggs import ham"
-        self.check_both(b, a)
-
-    def test_from_as(self):
-        b = "from green.eggs import ham as spam"
-        a = "from .green.eggs import ham as spam"
-        self.check_both(b, a)
-
-    def test_import(self):
-        b = "import foo"
-        a = "from . import foo"
-        self.check_both(b, a)
-
-        b = "import foo, bar"
-        a = "from . import foo, bar"
-        self.check_both(b, a)
-
-        b = "import foo, bar, x"
-        a = "from . import foo, bar, x"
-        self.check_both(b, a)
-
-        b = "import x, y, z"
-        a = "from . import x, y, z"
-        self.check_both(b, a)
-
-    def test_import_as(self):
-        b = "import foo as x"
-        a = "from . import foo as x"
-        self.check_both(b, a)
-
-        b = "import a as b, b as c, c as d"
-        a = "from . import a as b, b as c, c as d"
-        self.check_both(b, a)
-
-    def test_local_and_absolute(self):
-        self.always_exists = False
-        self.present_files = set(["foo.py", "__init__.py"])
-
-        s = "import foo, bar"
-        self.warns_unchanged(s, "absolute and local imports together")
-
-    def test_dotted_import(self):
-        b = "import foo.bar"
-        a = "from . import foo.bar"
-        self.check_both(b, a)
-
-    def test_dotted_import_as(self):
-        b = "import foo.bar as bang"
-        a = "from . import foo.bar as bang"
-        self.check_both(b, a)
-
-    def test_prefix(self):
-        b = """
-        # prefix
-        import foo.bar
-        """
-        a = """
-        # prefix
-        from . import foo.bar
-        """
-        self.check_both(b, a)
-
-
-class Test_set_literal(FixerTestCase):
-
-    fixer = "set_literal"
-
-    def test_basic(self):
-        b = """set([1, 2, 3])"""
-        a = """{1, 2, 3}"""
-        self.check(b, a)
-
-        b = """set((1, 2, 3))"""
-        a = """{1, 2, 3}"""
-        self.check(b, a)
-
-        b = """set((1,))"""
-        a = """{1}"""
-        self.check(b, a)
-
-        b = """set([1])"""
-        self.check(b, a)
-
-        b = """set((a, b))"""
-        a = """{a, b}"""
-        self.check(b, a)
-
-        b = """set([a, b])"""
-        self.check(b, a)
-
-        b = """set((a*234, f(args=23)))"""
-        a = """{a*234, f(args=23)}"""
-        self.check(b, a)
-
-        b = """set([a*23, f(23)])"""
-        a = """{a*23, f(23)}"""
-        self.check(b, a)
-
-        b = """set([a-234**23])"""
-        a = """{a-234**23}"""
-        self.check(b, a)
-
-    def test_listcomps(self):
-        b = """set([x for x in y])"""
-        a = """{x for x in y}"""
-        self.check(b, a)
-
-        b = """set([x for x in y if x == m])"""
-        a = """{x for x in y if x == m}"""
-        self.check(b, a)
-
-        b = """set([x for x in y for a in b])"""
-        a = """{x for x in y for a in b}"""
-        self.check(b, a)
-
-        b = """set([f(x) - 23 for x in y])"""
-        a = """{f(x) - 23 for x in y}"""
-        self.check(b, a)
-
-    def test_whitespace(self):
-        b = """set( [1, 2])"""
-        a = """{1, 2}"""
-        self.check(b, a)
-
-        b = """set([1 ,  2])"""
-        a = """{1 ,  2}"""
-        self.check(b, a)
-
-        b = """set([ 1 ])"""
-        a = """{ 1 }"""
-        self.check(b, a)
-
-        b = """set( [1] )"""
-        a = """{1}"""
-        self.check(b, a)
-
-        b = """set([  1,  2  ])"""
-        a = """{  1,  2  }"""
-        self.check(b, a)
-
-        b = """set([x  for x in y ])"""
-        a = """{x  for x in y }"""
-        self.check(b, a)
-
-        b = """set(
-                   [1, 2]
-               )
-            """
-        a = """{1, 2}\n"""
-        self.check(b, a)
-
-    def test_comments(self):
-        b = """set((1, 2)) # Hi"""
-        a = """{1, 2} # Hi"""
-        self.check(b, a)
-
-        # This isn't optimal behavior, but the fixer is optional.
-        b = """
-            # Foo
-            set( # Bar
-               (1, 2)
-            )
-            """
-        a = """
-            # Foo
-            {1, 2}
-            """
-        self.check(b, a)
-
-    def test_unchanged(self):
-        s = """set()"""
-        self.unchanged(s)
-
-        s = """set(a)"""
-        self.unchanged(s)
-
-        s = """set(a, b, c)"""
-        self.unchanged(s)
-
-        # Don't transform generators because they might have to be lazy.
-        s = """set(x for x in y)"""
-        self.unchanged(s)
-
-        s = """set(x for x in y if z)"""
-        self.unchanged(s)
-
-        s = """set(a*823-23**2 + f(23))"""
-        self.unchanged(s)
-
-
-class Test_sys_exc(FixerTestCase):
-    fixer = "sys_exc"
-
-    def test_0(self):
-        b = "sys.exc_type"
-        a = "sys.exc_info()[0]"
-        self.check(b, a)
-
-    def test_1(self):
-        b = "sys.exc_value"
-        a = "sys.exc_info()[1]"
-        self.check(b, a)
-
-    def test_2(self):
-        b = "sys.exc_traceback"
-        a = "sys.exc_info()[2]"
-        self.check(b, a)
-
-    def test_3(self):
-        b = "sys.exc_type # Foo"
-        a = "sys.exc_info()[0] # Foo"
-        self.check(b, a)
-
-    def test_4(self):
-        b = "sys.  exc_type"
-        a = "sys.  exc_info()[0]"
-        self.check(b, a)
-
-    def test_5(self):
-        b = "sys  .exc_type"
-        a = "sys  .exc_info()[0]"
-        self.check(b, a)
-
-
-class Test_paren(FixerTestCase):
-    fixer = "paren"
-
-    def test_0(self):
-        b = """[i for i in 1, 2 ]"""
-        a = """[i for i in (1, 2) ]"""
-        self.check(b, a)
-
-    def test_1(self):
-        b = """[i for i in 1, 2, ]"""
-        a = """[i for i in (1, 2,) ]"""
-        self.check(b, a)
-
-    def test_2(self):
-        b = """[i for i  in     1, 2 ]"""
-        a = """[i for i  in     (1, 2) ]"""
-        self.check(b, a)
-
-    def test_3(self):
-        b = """[i for i in 1, 2 if i]"""
-        a = """[i for i in (1, 2) if i]"""
-        self.check(b, a)
-
-    def test_4(self):
-        b = """[i for i in 1,    2    ]"""
-        a = """[i for i in (1,    2)    ]"""
-        self.check(b, a)
-
-    def test_5(self):
-        b = """(i for i in 1, 2)"""
-        a = """(i for i in (1, 2))"""
-        self.check(b, a)
-
-    def test_6(self):
-        b = """(i for i in 1   ,2   if i)"""
-        a = """(i for i in (1   ,2)   if i)"""
-        self.check(b, a)
-
-    def test_unchanged_0(self):
-        s = """[i for i in (1, 2)]"""
-        self.unchanged(s)
-
-    def test_unchanged_1(self):
-        s = """[i for i in foo()]"""
-        self.unchanged(s)
-
-    def test_unchanged_2(self):
-        s = """[i for i in (1, 2) if nothing]"""
-        self.unchanged(s)
-
-    def test_unchanged_3(self):
-        s = """(i for i in (1, 2))"""
-        self.unchanged(s)
-
-    def test_unchanged_4(self):
-        s = """[i for i in m]"""
-        self.unchanged(s)
-
-class Test_metaclass(FixerTestCase):
-
-    fixer = 'metaclass'
-
-    def test_unchanged(self):
-        self.unchanged("class X(): pass")
-        self.unchanged("class X(object): pass")
-        self.unchanged("class X(object1, object2): pass")
-        self.unchanged("class X(object1, object2, object3): pass")
-        self.unchanged("class X(metaclass=Meta): pass")
-        self.unchanged("class X(b, arg=23, metclass=Meta): pass")
-        self.unchanged("class X(b, arg=23, metaclass=Meta, other=42): pass")
-
-        s = """
-        class X:
-            def __metaclass__(self): pass
-        """
-        self.unchanged(s)
-
-        s = """
-        class X:
-            a[23] = 74
-        """
-        self.unchanged(s)
-
-    def test_comments(self):
-        b = """
-        class X:
-            # hi
-            __metaclass__ = AppleMeta
-        """
-        a = """
-        class X(metaclass=AppleMeta):
-            # hi
-            pass
-        """
-        self.check(b, a)
-
-        b = """
-        class X:
-            __metaclass__ = Meta
-            # Bedtime!
-        """
-        a = """
-        class X(metaclass=Meta):
-            pass
-            # Bedtime!
-        """
-        self.check(b, a)
-
-    def test_meta(self):
-        # no-parent class, odd body
-        b = """
-        class X():
-            __metaclass__ = Q
-            pass
-        """
-        a = """
-        class X(metaclass=Q):
-            pass
-        """
-        self.check(b, a)
-
-        # one parent class, no body
-        b = """class X(object): __metaclass__ = Q"""
-        a = """class X(object, metaclass=Q): pass"""
-        self.check(b, a)
-
-
-        # one parent, simple body
-        b = """
-        class X(object):
-            __metaclass__ = Meta
-            bar = 7
-        """
-        a = """
-        class X(object, metaclass=Meta):
-            bar = 7
-        """
-        self.check(b, a)
-
-        b = """
-        class X:
-            __metaclass__ = Meta; x = 4; g = 23
-        """
-        a = """
-        class X(metaclass=Meta):
-            x = 4; g = 23
-        """
-        self.check(b, a)
-
-        # one parent, simple body, __metaclass__ last
-        b = """
-        class X(object):
-            bar = 7
-            __metaclass__ = Meta
-        """
-        a = """
-        class X(object, metaclass=Meta):
-            bar = 7
-        """
-        self.check(b, a)
-
-        # redefining __metaclass__
-        b = """
-        class X():
-            __metaclass__ = A
-            __metaclass__ = B
-            bar = 7
-        """
-        a = """
-        class X(metaclass=B):
-            bar = 7
-        """
-        self.check(b, a)
-
-        # multiple inheritance, simple body
-        b = """
-        class X(clsA, clsB):
-            __metaclass__ = Meta
-            bar = 7
-        """
-        a = """
-        class X(clsA, clsB, metaclass=Meta):
-            bar = 7
-        """
-        self.check(b, a)
-
-        # keywords in the class statement
-        b = """class m(a, arg=23): __metaclass__ = Meta"""
-        a = """class m(a, arg=23, metaclass=Meta): pass"""
-        self.check(b, a)
-
-        b = """
-        class X(expression(2 + 4)):
-            __metaclass__ = Meta
-        """
-        a = """
-        class X(expression(2 + 4), metaclass=Meta):
-            pass
-        """
-        self.check(b, a)
-
-        b = """
-        class X(expression(2 + 4), x**4):
-            __metaclass__ = Meta
-        """
-        a = """
-        class X(expression(2 + 4), x**4, metaclass=Meta):
-            pass
-        """
-        self.check(b, a)
-
-        b = """
-        class X:
-            __metaclass__ = Meta
-            save.py = 23
-        """
-        a = """
-        class X(metaclass=Meta):
-            save.py = 23
-        """
-        self.check(b, a)
-
-
-class Test_getcwdu(FixerTestCase):
-
-    fixer = 'getcwdu'
-
-    def test_basic(self):
-        b = """os.getcwdu"""
-        a = """os.getcwd"""
-        self.check(b, a)
-
-        b = """os.getcwdu()"""
-        a = """os.getcwd()"""
-        self.check(b, a)
-
-        b = """meth = os.getcwdu"""
-        a = """meth = os.getcwd"""
-        self.check(b, a)
-
-        b = """os.getcwdu(args)"""
-        a = """os.getcwd(args)"""
-        self.check(b, a)
-
-    def test_comment(self):
-        b = """os.getcwdu() # Foo"""
-        a = """os.getcwd() # Foo"""
-        self.check(b, a)
-
-    def test_unchanged(self):
-        s = """os.getcwd()"""
-        self.unchanged(s)
-
-        s = """getcwdu()"""
-        self.unchanged(s)
-
-        s = """os.getcwdb()"""
-        self.unchanged(s)
-
-    def test_indentation(self):
-        b = """
-            if 1:
-                os.getcwdu()
-            """
-        a = """
-            if 1:
-                os.getcwd()
-            """
-        self.check(b, a)
-
-    def test_multilation(self):
-        b = """os .getcwdu()"""
-        a = """os .getcwd()"""
-        self.check(b, a)
-
-        b = """os.  getcwdu"""
-        a = """os.  getcwd"""
-        self.check(b, a)
-
-        b = """os.getcwdu (  )"""
-        a = """os.getcwd (  )"""
-        self.check(b, a)
-
-
-class Test_operator(FixerTestCase):
-
-    fixer = "operator"
-
-    def test_operator_isCallable(self):
-        b = "operator.isCallable(x)"
-        a = "callable(x)"
-        self.check(b, a)
-
-    def test_operator_sequenceIncludes(self):
-        b = "operator.sequenceIncludes(x, y)"
-        a = "operator.contains(x, y)"
-        self.check(b, a)
-
-        b = "operator .sequenceIncludes(x, y)"
-        a = "operator .contains(x, y)"
-        self.check(b, a)
-
-        b = "operator.  sequenceIncludes(x, y)"
-        a = "operator.  contains(x, y)"
-        self.check(b, a)
-
-    def test_operator_isSequenceType(self):
-        b = "operator.isSequenceType(x)"
-        a = "import collections.abc\nisinstance(x, collections.abc.Sequence)"
-        self.check(b, a)
-
-    def test_operator_isMappingType(self):
-        b = "operator.isMappingType(x)"
-        a = "import collections.abc\nisinstance(x, collections.abc.Mapping)"
-        self.check(b, a)
-
-    def test_operator_isNumberType(self):
-        b = "operator.isNumberType(x)"
-        a = "import numbers\nisinstance(x, numbers.Number)"
-        self.check(b, a)
-
-    def test_operator_repeat(self):
-        b = "operator.repeat(x, n)"
-        a = "operator.mul(x, n)"
-        self.check(b, a)
-
-        b = "operator .repeat(x, n)"
-        a = "operator .mul(x, n)"
-        self.check(b, a)
-
-        b = "operator.  repeat(x, n)"
-        a = "operator.  mul(x, n)"
-        self.check(b, a)
-
-    def test_operator_irepeat(self):
-        b = "operator.irepeat(x, n)"
-        a = "operator.imul(x, n)"
-        self.check(b, a)
-
-        b = "operator .irepeat(x, n)"
-        a = "operator .imul(x, n)"
-        self.check(b, a)
-
-        b = "operator.  irepeat(x, n)"
-        a = "operator.  imul(x, n)"
-        self.check(b, a)
-
-    def test_bare_isCallable(self):
-        s = "isCallable(x)"
-        t = "You should use 'callable(x)' here."
-        self.warns_unchanged(s, t)
-
-    def test_bare_sequenceIncludes(self):
-        s = "sequenceIncludes(x, y)"
-        t = "You should use 'operator.contains(x, y)' here."
-        self.warns_unchanged(s, t)
-
-    def test_bare_operator_isSequenceType(self):
-        s = "isSequenceType(z)"
-        t = "You should use 'isinstance(z, collections.abc.Sequence)' here."
-        self.warns_unchanged(s, t)
-
-    def test_bare_operator_isMappingType(self):
-        s = "isMappingType(x)"
-        t = "You should use 'isinstance(x, collections.abc.Mapping)' here."
-        self.warns_unchanged(s, t)
-
-    def test_bare_operator_isNumberType(self):
-        s = "isNumberType(y)"
-        t = "You should use 'isinstance(y, numbers.Number)' here."
-        self.warns_unchanged(s, t)
-
-    def test_bare_operator_repeat(self):
-        s = "repeat(x, n)"
-        t = "You should use 'operator.mul(x, n)' here."
-        self.warns_unchanged(s, t)
-
-    def test_bare_operator_irepeat(self):
-        s = "irepeat(y, 187)"
-        t = "You should use 'operator.imul(y, 187)' here."
-        self.warns_unchanged(s, t)
-
-
-class Test_exitfunc(FixerTestCase):
-
-    fixer = "exitfunc"
-
-    def test_simple(self):
-        b = """
-            import sys
-            sys.exitfunc = my_atexit
-            """
-        a = """
-            import sys
-            import atexit
-            atexit.register(my_atexit)
-            """
-        self.check(b, a)
-
-    def test_names_import(self):
-        b = """
-            import sys, crumbs
-            sys.exitfunc = my_func
-            """
-        a = """
-            import sys, crumbs, atexit
-            atexit.register(my_func)
-            """
-        self.check(b, a)
-
-    def test_complex_expression(self):
-        b = """
-            import sys
-            sys.exitfunc = do(d)/a()+complex(f=23, g=23)*expression
-            """
-        a = """
-            import sys
-            import atexit
-            atexit.register(do(d)/a()+complex(f=23, g=23)*expression)
-            """
-        self.check(b, a)
-
-    def test_comments(self):
-        b = """
-            import sys # Foo
-            sys.exitfunc = f # Blah
-            """
-        a = """
-            import sys
-            import atexit # Foo
-            atexit.register(f) # Blah
-            """
-        self.check(b, a)
-
-        b = """
-            import apples, sys, crumbs, larry # Pleasant comments
-            sys.exitfunc = func
-            """
-        a = """
-            import apples, sys, crumbs, larry, atexit # Pleasant comments
-            atexit.register(func)
-            """
-        self.check(b, a)
-
-    def test_in_a_function(self):
-        b = """
-            import sys
-            def f():
-                sys.exitfunc = func
-            """
-        a = """
-            import sys
-            import atexit
-            def f():
-                atexit.register(func)
-             """
-        self.check(b, a)
-
-    def test_no_sys_import(self):
-        b = """sys.exitfunc = f"""
-        a = """atexit.register(f)"""
-        msg = ("Can't find sys import; Please add an atexit import at the "
-            "top of your file.")
-        self.warns(b, a, msg)
-
-
-    def test_unchanged(self):
-        s = """f(sys.exitfunc)"""
-        self.unchanged(s)
-
-
-class Test_asserts(FixerTestCase):
-
-    fixer = "asserts"
-
-    def test_deprecated_names(self):
-        tests = [
-            ('self.assert_(True)', 'self.assertTrue(True)'),
-            ('self.assertEquals(2, 2)', 'self.assertEqual(2, 2)'),
-            ('self.assertNotEquals(2, 3)', 'self.assertNotEqual(2, 3)'),
-            ('self.assertAlmostEquals(2, 3)', 'self.assertAlmostEqual(2, 3)'),
-            ('self.assertNotAlmostEquals(2, 8)', 'self.assertNotAlmostEqual(2, 8)'),
-            ('self.failUnlessEqual(2, 2)', 'self.assertEqual(2, 2)'),
-            ('self.failIfEqual(2, 3)', 'self.assertNotEqual(2, 3)'),
-            ('self.failUnlessAlmostEqual(2, 3)', 'self.assertAlmostEqual(2, 3)'),
-            ('self.failIfAlmostEqual(2, 8)', 'self.assertNotAlmostEqual(2, 8)'),
-            ('self.failUnless(True)', 'self.assertTrue(True)'),
-            ('self.failUnlessRaises(foo)', 'self.assertRaises(foo)'),
-            ('self.failIf(False)', 'self.assertFalse(False)'),
-        ]
-        for b, a in tests:
-            self.check(b, a)
-
-    def test_variants(self):
-        b = 'eq = self.assertEquals'
-        a = 'eq = self.assertEqual'
-        self.check(b, a)
-        b = 'self.assertEquals(2, 3, msg="fail")'
-        a = 'self.assertEqual(2, 3, msg="fail")'
-        self.check(b, a)
-        b = 'self.assertEquals(2, 3, msg="fail") # foo'
-        a = 'self.assertEqual(2, 3, msg="fail") # foo'
-        self.check(b, a)
-        b = 'self.assertEquals (2, 3)'
-        a = 'self.assertEqual (2, 3)'
-        self.check(b, a)
-        b = '  self.assertEquals (2, 3)'
-        a = '  self.assertEqual (2, 3)'
-        self.check(b, a)
-        b = 'with self.failUnlessRaises(Explosion): explode()'
-        a = 'with self.assertRaises(Explosion): explode()'
-        self.check(b, a)
-        b = 'with self.failUnlessRaises(Explosion) as cm: explode()'
-        a = 'with self.assertRaises(Explosion) as cm: explode()'
-        self.check(b, a)
-
-    def test_unchanged(self):
-        self.unchanged('self.assertEqualsOnSaturday')
-        self.unchanged('self.assertEqualsOnSaturday(3, 5)')
diff --git a/Lib/test/test_lib2to3/test_main.py b/Lib/test/test_lib2to3/test_main.py
deleted file mode 100644
index a33c45c50a0de2..00000000000000
--- a/Lib/test/test_lib2to3/test_main.py
+++ /dev/null
@@ -1,139 +0,0 @@
-# -*- coding: utf-8 -*-
-import codecs
-import io
-import logging
-import os
-import re
-import shutil
-import sys
-import tempfile
-import unittest
-
-from lib2to3 import main
-
-
-TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "data")
-PY2_TEST_MODULE = os.path.join(TEST_DATA_DIR, "py2_test_grammar.py")
-
-
-class TestMain(unittest.TestCase):
-
-    def setUp(self):
-        self.temp_dir = None  # tearDown() will rmtree this directory if set.
-
-    def tearDown(self):
-        # Clean up logging configuration down by main.
-        del logging.root.handlers[:]
-        if self.temp_dir:
-            shutil.rmtree(self.temp_dir)
-
-    def run_2to3_capture(self, args, in_capture, out_capture, err_capture):
-        save_stdin = sys.stdin
-        save_stdout = sys.stdout
-        save_stderr = sys.stderr
-        sys.stdin = in_capture
-        sys.stdout = out_capture
-        sys.stderr = err_capture
-        try:
-            return main.main("lib2to3.fixes", args)
-        finally:
-            sys.stdin = save_stdin
-            sys.stdout = save_stdout
-            sys.stderr = save_stderr
-
-    def test_unencodable_diff(self):
-        input_stream = io.StringIO("print 'nothing'\nprint u'über'\n")
-        out = io.BytesIO()
-        out_enc = codecs.getwriter("ascii")(out)
-        err = io.StringIO()
-        ret = self.run_2to3_capture(["-"], input_stream, out_enc, err)
-        self.assertEqual(ret, 0)
-        output = out.getvalue().decode("ascii")
-        self.assertIn("-print 'nothing'", output)
-        self.assertIn("WARNING: couldn't encode <stdin>'s diff for "
-                      "your terminal", err.getvalue())
-
-    def setup_test_source_trees(self):
-        """Setup a test source tree and output destination tree."""
-        self.temp_dir = tempfile.mkdtemp()  # tearDown() cleans this up.
-        self.py2_src_dir = os.path.join(self.temp_dir, "python2_project")
-        self.py3_dest_dir = os.path.join(self.temp_dir, "python3_project")
-        os.mkdir(self.py2_src_dir)
-        os.mkdir(self.py3_dest_dir)
-        # Turn it into a package with a few files.
-        self.setup_files = []
-        open(os.path.join(self.py2_src_dir, "__init__.py"), "w").close()
-        self.setup_files.append("__init__.py")
-        shutil.copy(PY2_TEST_MODULE, self.py2_src_dir)
-        self.setup_files.append(os.path.basename(PY2_TEST_MODULE))
-        self.trivial_py2_file = os.path.join(self.py2_src_dir, "trivial.py")
-        self.init_py2_file = os.path.join(self.py2_src_dir, "__init__.py")
-        with open(self.trivial_py2_file, "w") as trivial:
-            trivial.write("print 'I need a simple conversion.'")
-        self.setup_files.append("trivial.py")
-
-    def test_filename_changing_on_output_single_dir(self):
-        """2to3 a single directory with a new output dir and suffix."""
-        self.setup_test_source_trees()
-        out = io.StringIO()
-        err = io.StringIO()
-        suffix = "TEST"
-        ret = self.run_2to3_capture(
-                ["-n", "--add-suffix", suffix, "--write-unchanged-files",
-                 "--no-diffs", "--output-dir",
-                 self.py3_dest_dir, self.py2_src_dir],
-                io.StringIO(""), out, err)
-        self.assertEqual(ret, 0)
-        stderr = err.getvalue()
-        self.assertIn(" implies -w.", stderr)
-        self.assertIn(
-                "Output in %r will mirror the input directory %r layout" % (
-                        self.py3_dest_dir, self.py2_src_dir), stderr)
-        self.assertEqual(set(name+suffix for name in self.setup_files),
-                         set(os.listdir(self.py3_dest_dir)))
-        for name in self.setup_files:
-            self.assertIn("Writing converted %s to %s" % (
-                    os.path.join(self.py2_src_dir, name),
-                    os.path.join(self.py3_dest_dir, name+suffix)), stderr)
-        sep = re.escape(os.sep)
-        self.assertRegex(
-                stderr, r"No changes to .*/__init__\.py".replace("/", sep))
-        self.assertNotRegex(
-                stderr, r"No changes to .*/trivial\.py".replace("/", sep))
-
-    def test_filename_changing_on_output_two_files(self):
-        """2to3 two files in one directory with a new output dir."""
-        self.setup_test_source_trees()
-        err = io.StringIO()
-        py2_files = [self.trivial_py2_file, self.init_py2_file]
-        expected_files = set(os.path.basename(name) for name in py2_files)
-        ret = self.run_2to3_capture(
-                ["-n", "-w", "--write-unchanged-files",
-                 "--no-diffs", "--output-dir", self.py3_dest_dir] + py2_files,
-                io.StringIO(""), io.StringIO(), err)
-        self.assertEqual(ret, 0)
-        stderr = err.getvalue()
-        self.assertIn(
-                "Output in %r will mirror the input directory %r layout" % (
-                        self.py3_dest_dir, self.py2_src_dir), stderr)
-        self.assertEqual(expected_files, set(os.listdir(self.py3_dest_dir)))
-
-    def test_filename_changing_on_output_single_file(self):
-        """2to3 a single file with a new output dir."""
-        self.setup_test_source_trees()
-        err = io.StringIO()
-        ret = self.run_2to3_capture(
-                ["-n", "-w", "--no-diffs", "--output-dir", self.py3_dest_dir,
-                 self.trivial_py2_file],
-                io.StringIO(""), io.StringIO(), err)
-        self.assertEqual(ret, 0)
-        stderr = err.getvalue()
-        self.assertIn(
-                "Output in %r will mirror the input directory %r layout" % (
-                        self.py3_dest_dir, self.py2_src_dir), stderr)
-        self.assertEqual(set([os.path.basename(self.trivial_py2_file)]),
-                         set(os.listdir(self.py3_dest_dir)))
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_lib2to3/test_parser.py b/Lib/test/test_lib2to3/test_parser.py
deleted file mode 100644
index 2c798b181fdbda..00000000000000
--- a/Lib/test/test_lib2to3/test_parser.py
+++ /dev/null
@@ -1,718 +0,0 @@
-"""Test suite for 2to3's parser and grammar files.
-
-This is the place to add tests for changes to 2to3's grammar, such as those
-merging the grammars for Python 2 and 3. In addition to specific tests for
-parts of the grammar we've changed, we also make sure we can parse the
-test_grammar.py files from both Python 2 and Python 3.
-"""
-
-# Testing imports
-from . import support
-from .support import driver, driver_no_print_statement
-
-# Python imports
-import difflib
-import importlib
-import operator
-import os
-import pickle
-import shutil
-import subprocess
-import sys
-import tempfile
-import test.support
-import unittest
-
-# Local imports
-from lib2to3.pgen2 import driver as pgen2_driver
-from lib2to3.pgen2 import tokenize
-from lib2to3.pgen2.parse import ParseError
-from lib2to3.pygram import python_symbols as syms
-
-
-class TestDriver(support.TestCase):
-
-    def test_formfeed(self):
-        s = """print 1\n\x0Cprint 2\n"""
-        t = driver.parse_string(s)
-        self.assertEqual(t.children[0].children[0].type, syms.print_stmt)
-        self.assertEqual(t.children[1].children[0].type, syms.print_stmt)
-
-
-class TestPgen2Caching(support.TestCase):
-    def test_load_grammar_from_txt_file(self):
-        pgen2_driver.load_grammar(support.grammar_path, save=False, force=True)
-
-    def test_load_grammar_from_pickle(self):
-        # Make a copy of the grammar file in a temp directory we are
-        # guaranteed to be able to write to.
-        tmpdir = tempfile.mkdtemp()
-        try:
-            grammar_copy = os.path.join(
-                    tmpdir, os.path.basename(support.grammar_path))
-            shutil.copy(support.grammar_path, grammar_copy)
-            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
-
-            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
-            self.assertTrue(os.path.exists(pickle_name))
-
-            os.unlink(grammar_copy)  # Only the pickle remains...
-            pgen2_driver.load_grammar(grammar_copy, save=False, force=False)
-        finally:
-            shutil.rmtree(tmpdir)
-
-    @unittest.skipIf(sys.executable is None, 'sys.executable required')
-    @unittest.skipIf(
-        sys.platform in {'emscripten', 'wasi'}, 'requires working subprocess'
-    )
-    def test_load_grammar_from_subprocess(self):
-        tmpdir = tempfile.mkdtemp()
-        tmpsubdir = os.path.join(tmpdir, 'subdir')
-        try:
-            os.mkdir(tmpsubdir)
-            grammar_base = os.path.basename(support.grammar_path)
-            grammar_copy = os.path.join(tmpdir, grammar_base)
-            grammar_sub_copy = os.path.join(tmpsubdir, grammar_base)
-            shutil.copy(support.grammar_path, grammar_copy)
-            shutil.copy(support.grammar_path, grammar_sub_copy)
-            pickle_name = pgen2_driver._generate_pickle_name(grammar_copy)
-            pickle_sub_name = pgen2_driver._generate_pickle_name(
-                     grammar_sub_copy)
-            self.assertNotEqual(pickle_name, pickle_sub_name)
-
-            # Generate a pickle file from this process.
-            pgen2_driver.load_grammar(grammar_copy, save=True, force=True)
-            self.assertTrue(os.path.exists(pickle_name))
-
-            # Generate a new pickle file in a subprocess with a most likely
-            # different hash randomization seed.
-            sub_env = dict(os.environ)
-            sub_env['PYTHONHASHSEED'] = 'random'
-            code = """
-from lib2to3.pgen2 import driver as pgen2_driver
-pgen2_driver.load_grammar(%r, save=True, force=True)
-            """ % (grammar_sub_copy,)
-            cmd = [sys.executable,
-                   '-Wignore:lib2to3:DeprecationWarning',
-                   '-c', code]
-            subprocess.check_call( cmd, env=sub_env)
-            self.assertTrue(os.path.exists(pickle_sub_name))
-
-            with open(pickle_name, 'rb') as pickle_f_1, \
-                    open(pickle_sub_name, 'rb') as pickle_f_2:
-                self.assertEqual(
-                    pickle_f_1.read(), pickle_f_2.read(),
-                    msg='Grammar caches generated using different hash seeds'
-                    ' were not identical.')
-        finally:
-            shutil.rmtree(tmpdir)
-
-    def test_load_packaged_grammar(self):
-        modname = __name__ + '.load_test'
-        class MyLoader:
-            def get_data(self, where):
-                return pickle.dumps({'elephant': 19})
-        class MyModule:
-            __file__ = 'parsertestmodule'
-            __spec__ = importlib.util.spec_from_loader(modname, MyLoader())
-        sys.modules[modname] = MyModule()
-        self.addCleanup(operator.delitem, sys.modules, modname)
-        g = pgen2_driver.load_packaged_grammar(modname, 'Grammar.txt')
-        self.assertEqual(g.elephant, 19)
-
-
-class GrammarTest(support.TestCase):
-    def validate(self, code):
-        support.parse_string(code)
-
-    def invalid_syntax(self, code):
-        try:
-            self.validate(code)
-        except ParseError:
-            pass
-        else:
-            raise AssertionError("Syntax shouldn't have been valid")
-
-
-class TestMatrixMultiplication(GrammarTest):
-    def test_matrix_multiplication_operator(self):
-        self.validate("a @ b")
-        self.validate("a @= b")
-
-
-class TestYieldFrom(GrammarTest):
-    def test_yield_from(self):
-        self.validate("yield from x")
-        self.validate("(yield from x) + y")
-        self.invalid_syntax("yield from")
-
-
-class TestAsyncAwait(GrammarTest):
-    def test_await_expr(self):
-        self.validate("""async def foo():
-                             await x
-                      """)
-
-        self.validate("""async def foo():
-                             [i async for i in b]
-                      """)
-
-        self.validate("""async def foo():
-                             {i for i in b
-                                async for i in a if await i
-                                  for b in i}
-                      """)
-
-        self.validate("""async def foo():
-                             [await i for i in b if await c]
-                      """)
-
-        self.validate("""async def foo():
-                             [ i for i in b if c]
-                      """)
-
-        self.validate("""async def foo():
-
-            def foo(): pass
-
-            def foo(): pass
-
-            await x
-        """)
-
-        self.validate("""async def foo(): return await a""")
-
-        self.validate("""def foo():
-            def foo(): pass
-            async def foo(): await x
-        """)
-
-        self.invalid_syntax("await x")
-        self.invalid_syntax("""def foo():
-                                   await x""")
-
-        self.invalid_syntax("""def foo():
-            def foo(): pass
-            async def foo(): pass
-            await x
-        """)
-
-    def test_async_var(self):
-        self.validate("""async = 1""")
-        self.validate("""await = 1""")
-        self.validate("""def async(): pass""")
-
-    def test_async_for(self):
-        self.validate("""async def foo():
-                             async for a in b: pass""")
-
-    def test_async_with(self):
-        self.validate("""async def foo():
-                             async with a: pass""")
-
-        self.invalid_syntax("""def foo():
-                                   async with a: pass""")
-
-    def test_async_generator(self):
-        self.validate(
-            """async def foo():
-                   return (i * 2 async for i in arange(42))"""
-        )
-        self.validate(
-            """def foo():
-                   return (i * 2 async for i in arange(42))"""
-        )
-
-
-class TestRaiseChanges(GrammarTest):
-    def test_2x_style_1(self):
-        self.validate("raise")
-
-    def test_2x_style_2(self):
-        self.validate("raise E, V")
-
-    def test_2x_style_3(self):
-        self.validate("raise E, V, T")
-
-    def test_2x_style_invalid_1(self):
-        self.invalid_syntax("raise E, V, T, Z")
-
-    def test_3x_style(self):
-        self.validate("raise E1 from E2")
-
-    def test_3x_style_invalid_1(self):
-        self.invalid_syntax("raise E, V from E1")
-
-    def test_3x_style_invalid_2(self):
-        self.invalid_syntax("raise E from E1, E2")
-
-    def test_3x_style_invalid_3(self):
-        self.invalid_syntax("raise from E1, E2")
-
-    def test_3x_style_invalid_4(self):
-        self.invalid_syntax("raise E from")
-
-
-# Modelled after Lib/test/test_grammar.py:TokenTests.test_funcdef issue2292
-# and Lib/test/text_parser.py test_list_displays, test_set_displays,
-# test_dict_displays, test_argument_unpacking, ... changes.
-class TestUnpackingGeneralizations(GrammarTest):
-    def test_mid_positional_star(self):
-        self.validate("""func(1, *(2, 3), 4)""")
-
-    def test_double_star_dict_literal(self):
-        self.validate("""func(**{'eggs':'scrambled', 'spam':'fried'})""")
-
-    def test_double_star_dict_literal_after_keywords(self):
-        self.validate("""func(spam='fried', **{'eggs':'scrambled'})""")
-
-    def test_double_star_expression(self):
-        self.validate("""func(**{'a':2} or {})""")
-        self.validate("""func(**() or {})""")
-
-    def test_star_expression(self):
-        self.validate("""func(*[] or [2])""")
-
-    def test_list_display(self):
-        self.validate("""[*{2}, 3, *[4]]""")
-
-    def test_set_display(self):
-        self.validate("""{*{2}, 3, *[4]}""")
-
-    def test_dict_display_1(self):
-        self.validate("""{**{}}""")
-
-    def test_dict_display_2(self):
-        self.validate("""{**{}, 3:4, **{5:6, 7:8}}""")
-
-    def test_complex_star_expression(self):
-        self.validate("func(* [] or [1])")
-
-    def test_complex_double_star_expression(self):
-        self.validate("func(**{1: 3} if False else {x: x for x in range(3)})")
-
-    def test_argument_unpacking_1(self):
-        self.validate("""f(a, *b, *c, d)""")
-
-    def test_argument_unpacking_2(self):
-        self.validate("""f(**a, **b)""")
-
-    def test_argument_unpacking_3(self):
-        self.validate("""f(2, *a, *b, **b, **c, **d)""")
-
-    def test_trailing_commas_1(self):
-        self.validate("def f(a, b): call(a, b)")
-        self.validate("def f(a, b,): call(a, b,)")
-
-    def test_trailing_commas_2(self):
-        self.validate("def f(a, *b): call(a, *b)")
-        self.validate("def f(a, *b,): call(a, *b,)")
-
-    def test_trailing_commas_3(self):
-        self.validate("def f(a, b=1): call(a, b=1)")
-        self.validate("def f(a, b=1,): call(a, b=1,)")
-
-    def test_trailing_commas_4(self):
-        self.validate("def f(a, **b): call(a, **b)")
-        self.validate("def f(a, **b,): call(a, **b,)")
-
-    def test_trailing_commas_5(self):
-        self.validate("def f(*a, b=1): call(*a, b=1)")
-        self.validate("def f(*a, b=1,): call(*a, b=1,)")
-
-    def test_trailing_commas_6(self):
-        self.validate("def f(*a, **b): call(*a, **b)")
-        self.validate("def f(*a, **b,): call(*a, **b,)")
-
-    def test_trailing_commas_7(self):
-        self.validate("def f(*, b=1): call(*b)")
-        self.validate("def f(*, b=1,): call(*b,)")
-
-    def test_trailing_commas_8(self):
-        self.validate("def f(a=1, b=2): call(a=1, b=2)")
-        self.validate("def f(a=1, b=2,): call(a=1, b=2,)")
-
-    def test_trailing_commas_9(self):
-        self.validate("def f(a=1, **b): call(a=1, **b)")
-        self.validate("def f(a=1, **b,): call(a=1, **b,)")
-
-    def test_trailing_commas_lambda_1(self):
-        self.validate("f = lambda a, b: call(a, b)")
-        self.validate("f = lambda a, b,: call(a, b,)")
-
-    def test_trailing_commas_lambda_2(self):
-        self.validate("f = lambda a, *b: call(a, *b)")
-        self.validate("f = lambda a, *b,: call(a, *b,)")
-
-    def test_trailing_commas_lambda_3(self):
-        self.validate("f = lambda a, b=1: call(a, b=1)")
-        self.validate("f = lambda a, b=1,: call(a, b=1,)")
-
-    def test_trailing_commas_lambda_4(self):
-        self.validate("f = lambda a, **b: call(a, **b)")
-        self.validate("f = lambda a, **b,: call(a, **b,)")
-
-    def test_trailing_commas_lambda_5(self):
-        self.validate("f = lambda *a, b=1: call(*a, b=1)")
-        self.validate("f = lambda *a, b=1,: call(*a, b=1,)")
-
-    def test_trailing_commas_lambda_6(self):
-        self.validate("f = lambda *a, **b: call(*a, **b)")
-        self.validate("f = lambda *a, **b,: call(*a, **b,)")
-
-    def test_trailing_commas_lambda_7(self):
-        self.validate("f = lambda *, b=1: call(*b)")
-        self.validate("f = lambda *, b=1,: call(*b,)")
-
-    def test_trailing_commas_lambda_8(self):
-        self.validate("f = lambda a=1, b=2: call(a=1, b=2)")
-        self.validate("f = lambda a=1, b=2,: call(a=1, b=2,)")
-
-    def test_trailing_commas_lambda_9(self):
-        self.validate("f = lambda a=1, **b: call(a=1, **b)")
-        self.validate("f = lambda a=1, **b,: call(a=1, **b,)")
-
-
-# Adapted from Python 3's Lib/test/test_grammar.py:GrammarTests.testFuncdef
-class TestFunctionAnnotations(GrammarTest):
-    def test_1(self):
-        self.validate("""def f(x) -> list: pass""")
-
-    def test_2(self):
-        self.validate("""def f(x:int): pass""")
-
-    def test_3(self):
-        self.validate("""def f(*x:str): pass""")
-
-    def test_4(self):
-        self.validate("""def f(**x:float): pass""")
-
-    def test_5(self):
-        self.validate("""def f(x, y:1+2): pass""")
-
-    def test_6(self):
-        self.validate("""def f(a, (b:1, c:2, d)): pass""")
-
-    def test_7(self):
-        self.validate("""def f(a, (b:1, c:2, d), e:3=4, f=5, *g:6): pass""")
-
-    def test_8(self):
-        s = """def f(a, (b:1, c:2, d), e:3=4, f=5,
-                        *g:6, h:7, i=8, j:9=10, **k:11) -> 12: pass"""
-        self.validate(s)
-
-    def test_9(self):
-        s = """def f(
-          a: str,
-          b: int,
-          *,
-          c: bool = False,
-          **kwargs,
-        ) -> None:
-            call(c=c, **kwargs,)"""
-        self.validate(s)
-
-    def test_10(self):
-        s = """def f(
-          a: str,
-        ) -> None:
-            call(a,)"""
-        self.validate(s)
-
-    def test_11(self):
-        s = """def f(
-          a: str = '',
-        ) -> None:
-            call(a=a,)"""
-        self.validate(s)
-
-    def test_12(self):
-        s = """def f(
-          *args: str,
-        ) -> None:
-            call(*args,)"""
-        self.validate(s)
-
-    def test_13(self):
-        self.validate("def f(a: str, b: int) -> None: call(a, b)")
-        self.validate("def f(a: str, b: int,) -> None: call(a, b,)")
-
-    def test_14(self):
-        self.validate("def f(a: str, *b: int) -> None: call(a, *b)")
-        self.validate("def f(a: str, *b: int,) -> None: call(a, *b,)")
-
-    def test_15(self):
-        self.validate("def f(a: str, b: int=1) -> None: call(a, b=1)")
-        self.validate("def f(a: str, b: int=1,) -> None: call(a, b=1,)")
-
-    def test_16(self):
-        self.validate("def f(a: str, **b: int) -> None: call(a, **b)")
-        self.validate("def f(a: str, **b: int,) -> None: call(a, **b,)")
-
-    def test_17(self):
-        self.validate("def f(*a: str, b: int=1) -> None: call(*a, b=1)")
-        self.validate("def f(*a: str, b: int=1,) -> None: call(*a, b=1,)")
-
-    def test_18(self):
-        self.validate("def f(*a: str, **b: int) -> None: call(*a, **b)")
-        self.validate("def f(*a: str, **b: int,) -> None: call(*a, **b,)")
-
-    def test_19(self):
-        self.validate("def f(*, b: int=1) -> None: call(*b)")
-        self.validate("def f(*, b: int=1,) -> None: call(*b,)")
-
-    def test_20(self):
-        self.validate("def f(a: str='', b: int=2) -> None: call(a=a, b=2)")
-        self.validate("def f(a: str='', b: int=2,) -> None: call(a=a, b=2,)")
-
-    def test_21(self):
-        self.validate("def f(a: str='', **b: int) -> None: call(a=a, **b)")
-        self.validate("def f(a: str='', **b: int,) -> None: call(a=a, **b,)")
-
-
-# Adapted from Python 3's Lib/test/test_grammar.py:GrammarTests.test_var_annot
-class TestVarAnnotations(GrammarTest):
-    def test_1(self):
-        self.validate("var1: int = 5")
-
-    def test_2(self):
-        self.validate("var2: [int, str]")
-
-    def test_3(self):
-        self.validate("def f():\n"
-                      "    st: str = 'Hello'\n"
-                      "    a.b: int = (1, 2)\n"
-                      "    return st\n")
-
-    def test_4(self):
-        self.validate("def fbad():\n"
-                      "    x: int\n"
-                      "    print(x)\n")
-
-    def test_5(self):
-        self.validate("class C:\n"
-                      "    x: int\n"
-                      "    s: str = 'attr'\n"
-                      "    z = 2\n"
-                      "    def __init__(self, x):\n"
-                      "        self.x: int = x\n")
-
-    def test_6(self):
-        self.validate("lst: List[int] = []")
-
-
-class TestExcept(GrammarTest):
-    def test_new(self):
-        s = """
-            try:
-                x
-            except E as N:
-                y"""
-        self.validate(s)
-
-    def test_old(self):
-        s = """
-            try:
-                x
-            except E, N:
-                y"""
-        self.validate(s)
-
-
-class TestStringLiterals(GrammarTest):
-    prefixes = ("'", '"',
-        "r'", 'r"', "R'", 'R"',
-        "u'", 'u"', "U'", 'U"',
-        "b'", 'b"', "B'", 'B"',
-        "f'", 'f"', "F'", 'F"',
-        "ur'", 'ur"', "Ur'", 'Ur"',
-        "uR'", 'uR"', "UR'", 'UR"',
-        "br'", 'br"', "Br'", 'Br"',
-        "bR'", 'bR"', "BR'", 'BR"',
-        "rb'", 'rb"', "Rb'", 'Rb"',
-        "rB'", 'rB"', "RB'", 'RB"',)
-
-    def test_lit(self):
-        for pre in self.prefixes:
-            single = "{p}spamspamspam{s}".format(p=pre, s=pre[-1])
-            self.validate(single)
-            triple = "{p}{s}{s}eggs{s}{s}{s}".format(p=pre, s=pre[-1])
-            self.validate(triple)
-
-
-# Adapted from Python 3's Lib/test/test_grammar.py:GrammarTests.testAtoms
-class TestSetLiteral(GrammarTest):
-    def test_1(self):
-        self.validate("""x = {'one'}""")
-
-    def test_2(self):
-        self.validate("""x = {'one', 1,}""")
-
-    def test_3(self):
-        self.validate("""x = {'one', 'two', 'three'}""")
-
-    def test_4(self):
-        self.validate("""x = {2, 3, 4,}""")
-
-
-# Adapted from Python 3's Lib/test/test_unicode_identifiers.py and
-# Lib/test/test_tokenize.py:TokenizeTest.test_non_ascii_identifiers
-class TestIdentifier(GrammarTest):
-    def test_non_ascii_identifiers(self):
-        self.validate("Örter = 'places'\ngrün = 'green'")
-        self.validate("蟒 = a蟒 = 锦蛇 = 1")
-        self.validate("µ = aµ = µµ = 1")
-        self.validate("������� = a_������� = 1")
-
-
-class TestNumericLiterals(GrammarTest):
-    def test_new_octal_notation(self):
-        self.validate("""0o7777777777777""")
-        self.invalid_syntax("""0o7324528887""")
-
-    def test_new_binary_notation(self):
-        self.validate("""0b101010""")
-        self.invalid_syntax("""0b0101021""")
-
-
-class TestClassDef(GrammarTest):
-    def test_new_syntax(self):
-        self.validate("class B(t=7): pass")
-        self.validate("class B(t, *args): pass")
-        self.validate("class B(t, **kwargs): pass")
-        self.validate("class B(t, *args, **kwargs): pass")
-        self.validate("class B(t, y=9, *args, **kwargs,): pass")
-
-
-class TestParserIdempotency(support.TestCase):
-
-    """A cut-down version of pytree_idempotency.py."""
-
-    def parse_file(self, filepath):
-        if test.support.verbose:
-            print(f"Parse file: {filepath}")
-        with open(filepath, "rb") as fp:
-            encoding = tokenize.detect_encoding(fp.readline)[0]
-        self.assertIsNotNone(encoding,
-                             "can't detect encoding for %s" % filepath)
-        with open(filepath, "r", encoding=encoding) as fp:
-            source = fp.read()
-        try:
-            tree = driver.parse_string(source)
-        except ParseError:
-            try:
-                tree = driver_no_print_statement.parse_string(source)
-            except ParseError as err:
-                self.fail('ParseError on file %s (%s)' % (filepath, err))
-        new = str(tree)
-        if new != source:
-            print(diff_texts(source, new, filepath))
-            self.fail("Idempotency failed: %s" % filepath)
-
-    def test_all_project_files(self):
-        for filepath in support.all_project_files():
-            with self.subTest(filepath=filepath):
-                self.parse_file(filepath)
-
-    def test_extended_unpacking(self):
-        driver.parse_string("a, *b, c = x\n")
-        driver.parse_string("[*a, b] = x\n")
-        driver.parse_string("(z, *y, w) = m\n")
-        driver.parse_string("for *z, m in d: pass\n")
-
-
-class TestLiterals(GrammarTest):
-
-    def validate(self, s):
-        driver.parse_string(support.dedent(s) + "\n\n")
-
-    def test_multiline_bytes_literals(self):
-        s = """
-            md5test(b"\xaa" * 80,
-                    (b"Test Using Larger Than Block-Size Key "
-                     b"and Larger Than One Block-Size Data"),
-                    "6f630fad67cda0ee1fb1f562db3aa53e")
-            """
-        self.validate(s)
-
-    def test_multiline_bytes_tripquote_literals(self):
-        s = '''
-            b"""
-            <?xml version="1.0" encoding="UTF-8"?>
-            <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN">
-            """
-            '''
-        self.validate(s)
-
-    def test_multiline_str_literals(self):
-        s = """
-            md5test("\xaa" * 80,
-                    ("Test Using Larger Than Block-Size Key "
-                     "and Larger Than One Block-Size Data"),
-                    "6f630fad67cda0ee1fb1f562db3aa53e")
-            """
-        self.validate(s)
-
-
-class TestNamedAssignments(GrammarTest):
-    """Also known as the walrus operator."""
-
-    def test_named_assignment_if(self):
-        driver.parse_string("if f := x(): pass\n")
-
-    def test_named_assignment_while(self):
-        driver.parse_string("while f := x(): pass\n")
-
-    def test_named_assignment_generator(self):
-        driver.parse_string("any((lastNum := num) == 1 for num in [1, 2, 3])\n")
-
-    def test_named_assignment_listcomp(self):
-        driver.parse_string("[(lastNum := num) == 1 for num in [1, 2, 3]]\n")
-
-
-class TestPositionalOnlyArgs(GrammarTest):
-
-    def test_one_pos_only_arg(self):
-        driver.parse_string("def one_pos_only_arg(a, /): pass\n")
-
-    def test_all_markers(self):
-        driver.parse_string(
-                "def all_markers(a, b=2, /, c, d=4, *, e=5, f): pass\n")
-
-    def test_all_with_args_and_kwargs(self):
-        driver.parse_string(
-                """def all_markers_with_args_and_kwargs(
-                           aa, b, /, _cc, d, *args, e, f_f, **kwargs,
-                   ):
-                       pass\n""")
-
-    def test_lambda_soup(self):
-        driver.parse_string(
-                "lambda a, b, /, c, d, *args, e, f, **kw: kw\n")
-
-    def test_only_positional_or_keyword(self):
-        driver.parse_string("def func(a,b,/,*,g,e=3): pass\n")
-
-
-class TestPickleableException(unittest.TestCase):
-    def test_ParseError(self):
-        err = ParseError('msg', 2, None, (1, 'context'))
-        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            err2 = pickle.loads(pickle.dumps(err, protocol=proto))
-            self.assertEqual(err.args, err2.args)
-            self.assertEqual(err.msg, err2.msg)
-            self.assertEqual(err.type, err2.type)
-            self.assertEqual(err.value, err2.value)
-            self.assertEqual(err.context, err2.context)
-
-
-def diff_texts(a, b, filename):
-    a = a.splitlines()
-    b = b.splitlines()
-    return difflib.unified_diff(a, b, filename, filename,
-                                "(original)", "(reserialized)",
-                                lineterm="")
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_lib2to3/test_pytree.py b/Lib/test/test_lib2to3/test_pytree.py
deleted file mode 100644
index 177126d5452910..00000000000000
--- a/Lib/test/test_lib2to3/test_pytree.py
+++ /dev/null
@@ -1,472 +0,0 @@
-# Copyright 2006 Google, Inc. All Rights Reserved.
-# Licensed to PSF under a Contributor Agreement.
-
-"""Unit tests for pytree.py.
-
-NOTE: Please *don't* add doc strings to individual test methods!
-In verbose mode, printing of the module, class and method name is much
-more helpful than printing of (the first line of) the docstring,
-especially when debugging a test.
-"""
-
-# Testing imports
-from . import support
-
-from lib2to3 import pytree
-
-try:
-    sorted
-except NameError:
-    def sorted(lst):
-        l = list(lst)
-        l.sort()
-        return l
-
-class TestNodes(support.TestCase):
-
-    """Unit tests for nodes (Base, Leaf, Node)."""
-
-    def test_instantiate_base(self):
-        if __debug__:
-            # Test that instantiating Base() raises an AssertionError
-            self.assertRaises(AssertionError, pytree.Base)
-
-    def test_leaf(self):
-        l1 = pytree.Leaf(100, "foo")
-        self.assertEqual(l1.type, 100)
-        self.assertEqual(l1.value, "foo")
-
-    def test_leaf_repr(self):
-        l1 = pytree.Leaf(100, "foo")
-        self.assertEqual(repr(l1), "Leaf(100, 'foo')")
-
-    def test_leaf_str(self):
-        l1 = pytree.Leaf(100, "foo")
-        self.assertEqual(str(l1), "foo")
-        l2 = pytree.Leaf(100, "foo", context=(" ", (10, 1)))
-        self.assertEqual(str(l2), " foo")
-
-    def test_leaf_str_numeric_value(self):
-        # Make sure that the Leaf's value is stringified. Failing to
-        #  do this can cause a TypeError in certain situations.
-        l1 = pytree.Leaf(2, 5)
-        l1.prefix = "foo_"
-        self.assertEqual(str(l1), "foo_5")
-
-    def test_leaf_equality(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "foo", context=(" ", (1, 0)))
-        self.assertEqual(l1, l2)
-        l3 = pytree.Leaf(101, "foo")
-        l4 = pytree.Leaf(100, "bar")
-        self.assertNotEqual(l1, l3)
-        self.assertNotEqual(l1, l4)
-
-    def test_leaf_prefix(self):
-        l1 = pytree.Leaf(100, "foo")
-        self.assertEqual(l1.prefix, "")
-        self.assertFalse(l1.was_changed)
-        l1.prefix = "  ##\n\n"
-        self.assertEqual(l1.prefix, "  ##\n\n")
-        self.assertTrue(l1.was_changed)
-
-    def test_node(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(200, "bar")
-        n1 = pytree.Node(1000, [l1, l2])
-        self.assertEqual(n1.type, 1000)
-        self.assertEqual(n1.children, [l1, l2])
-
-    def test_node_repr(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar", context=(" ", (1, 0)))
-        n1 = pytree.Node(1000, [l1, l2])
-        self.assertEqual(repr(n1),
-                         "Node(1000, [%s, %s])" % (repr(l1), repr(l2)))
-
-    def test_node_str(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar", context=(" ", (1, 0)))
-        n1 = pytree.Node(1000, [l1, l2])
-        self.assertEqual(str(n1), "foo bar")
-
-    def test_node_prefix(self):
-        l1 = pytree.Leaf(100, "foo")
-        self.assertEqual(l1.prefix, "")
-        n1 = pytree.Node(1000, [l1])
-        self.assertEqual(n1.prefix, "")
-        n1.prefix = " "
-        self.assertEqual(n1.prefix, " ")
-        self.assertEqual(l1.prefix, " ")
-
-    def test_get_suffix(self):
-        l1 = pytree.Leaf(100, "foo", prefix="a")
-        l2 = pytree.Leaf(100, "bar", prefix="b")
-        n1 = pytree.Node(1000, [l1, l2])
-
-        self.assertEqual(l1.get_suffix(), l2.prefix)
-        self.assertEqual(l2.get_suffix(), "")
-        self.assertEqual(n1.get_suffix(), "")
-
-        l3 = pytree.Leaf(100, "bar", prefix="c")
-        n2 = pytree.Node(1000, [n1, l3])
-
-        self.assertEqual(n1.get_suffix(), l3.prefix)
-        self.assertEqual(l3.get_suffix(), "")
-        self.assertEqual(n2.get_suffix(), "")
-
-    def test_node_equality(self):
-        n1 = pytree.Node(1000, ())
-        n2 = pytree.Node(1000, [], context=(" ", (1, 0)))
-        self.assertEqual(n1, n2)
-        n3 = pytree.Node(1001, ())
-        self.assertNotEqual(n1, n3)
-
-    def test_node_recursive_equality(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "foo")
-        n1 = pytree.Node(1000, [l1])
-        n2 = pytree.Node(1000, [l2])
-        self.assertEqual(n1, n2)
-        l3 = pytree.Leaf(100, "bar")
-        n3 = pytree.Node(1000, [l3])
-        self.assertNotEqual(n1, n3)
-
-    def test_replace(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "+")
-        l3 = pytree.Leaf(100, "bar")
-        n1 = pytree.Node(1000, [l1, l2, l3])
-        self.assertEqual(n1.children, [l1, l2, l3])
-        self.assertIsInstance(n1.children, list)
-        self.assertFalse(n1.was_changed)
-        l2new = pytree.Leaf(100, "-")
-        l2.replace(l2new)
-        self.assertEqual(n1.children, [l1, l2new, l3])
-        self.assertIsInstance(n1.children, list)
-        self.assertTrue(n1.was_changed)
-
-    def test_replace_with_list(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "+")
-        l3 = pytree.Leaf(100, "bar")
-        n1 = pytree.Node(1000, [l1, l2, l3])
-
-        l2.replace([pytree.Leaf(100, "*"), pytree.Leaf(100, "*")])
-        self.assertEqual(str(n1), "foo**bar")
-        self.assertIsInstance(n1.children, list)
-
-    def test_leaves(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar")
-        l3 = pytree.Leaf(100, "fooey")
-        n2 = pytree.Node(1000, [l1, l2])
-        n3 = pytree.Node(1000, [l3])
-        n1 = pytree.Node(1000, [n2, n3])
-
-        self.assertEqual(list(n1.leaves()), [l1, l2, l3])
-
-    def test_depth(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar")
-        n2 = pytree.Node(1000, [l1, l2])
-        n3 = pytree.Node(1000, [])
-        n1 = pytree.Node(1000, [n2, n3])
-
-        self.assertEqual(l1.depth(), 2)
-        self.assertEqual(n3.depth(), 1)
-        self.assertEqual(n1.depth(), 0)
-
-    def test_post_order(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar")
-        l3 = pytree.Leaf(100, "fooey")
-        c1 = pytree.Node(1000, [l1, l2])
-        n1 = pytree.Node(1000, [c1, l3])
-        self.assertEqual(list(n1.post_order()), [l1, l2, c1, l3, n1])
-
-    def test_pre_order(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar")
-        l3 = pytree.Leaf(100, "fooey")
-        c1 = pytree.Node(1000, [l1, l2])
-        n1 = pytree.Node(1000, [c1, l3])
-        self.assertEqual(list(n1.pre_order()), [n1, c1, l1, l2, l3])
-
-    def test_changed(self):
-        l1 = pytree.Leaf(100, "f")
-        self.assertFalse(l1.was_changed)
-        l1.changed()
-        self.assertTrue(l1.was_changed)
-
-        l1 = pytree.Leaf(100, "f")
-        n1 = pytree.Node(1000, [l1])
-        self.assertFalse(n1.was_changed)
-        n1.changed()
-        self.assertTrue(n1.was_changed)
-
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "+")
-        l3 = pytree.Leaf(100, "bar")
-        n1 = pytree.Node(1000, [l1, l2, l3])
-        n2 = pytree.Node(1000, [n1])
-        self.assertFalse(l1.was_changed)
-        self.assertFalse(n1.was_changed)
-        self.assertFalse(n2.was_changed)
-
-        n1.changed()
-        self.assertTrue(n1.was_changed)
-        self.assertTrue(n2.was_changed)
-        self.assertFalse(l1.was_changed)
-
-    def test_leaf_constructor_prefix(self):
-        for prefix in ("xyz_", ""):
-            l1 = pytree.Leaf(100, "self", prefix=prefix)
-            self.assertTrue(str(l1), prefix + "self")
-            self.assertEqual(l1.prefix, prefix)
-
-    def test_node_constructor_prefix(self):
-        for prefix in ("xyz_", ""):
-            l1 = pytree.Leaf(100, "self")
-            l2 = pytree.Leaf(100, "foo", prefix="_")
-            n1 = pytree.Node(1000, [l1, l2], prefix=prefix)
-            self.assertTrue(str(n1), prefix + "self_foo")
-            self.assertEqual(n1.prefix, prefix)
-            self.assertEqual(l1.prefix, prefix)
-            self.assertEqual(l2.prefix, "_")
-
-    def test_remove(self):
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "foo")
-        n1 = pytree.Node(1000, [l1, l2])
-        n2 = pytree.Node(1000, [n1])
-
-        self.assertEqual(n1.remove(), 0)
-        self.assertEqual(n2.children, [])
-        self.assertEqual(l1.parent, n1)
-        self.assertEqual(n1.parent, None)
-        self.assertEqual(n2.parent, None)
-        self.assertFalse(n1.was_changed)
-        self.assertTrue(n2.was_changed)
-
-        self.assertEqual(l2.remove(), 1)
-        self.assertEqual(l1.remove(), 0)
-        self.assertEqual(n1.children, [])
-        self.assertEqual(l1.parent, None)
-        self.assertEqual(n1.parent, None)
-        self.assertEqual(n2.parent, None)
-        self.assertTrue(n1.was_changed)
-        self.assertTrue(n2.was_changed)
-
-    def test_remove_parentless(self):
-        n1 = pytree.Node(1000, [])
-        n1.remove()
-        self.assertEqual(n1.parent, None)
-
-        l1 = pytree.Leaf(100, "foo")
-        l1.remove()
-        self.assertEqual(l1.parent, None)
-
-    def test_node_set_child(self):
-        l1 = pytree.Leaf(100, "foo")
-        n1 = pytree.Node(1000, [l1])
-
-        l2 = pytree.Leaf(100, "bar")
-        n1.set_child(0, l2)
-        self.assertEqual(l1.parent, None)
-        self.assertEqual(l2.parent, n1)
-        self.assertEqual(n1.children, [l2])
-
-        n2 = pytree.Node(1000, [l1])
-        n2.set_child(0, n1)
-        self.assertEqual(l1.parent, None)
-        self.assertEqual(n1.parent, n2)
-        self.assertEqual(n2.parent, None)
-        self.assertEqual(n2.children, [n1])
-
-        self.assertRaises(IndexError, n1.set_child, 4, l2)
-        # I don't care what it raises, so long as it's an exception
-        self.assertRaises(Exception, n1.set_child, 0, list)
-
-    def test_node_insert_child(self):
-        l1 = pytree.Leaf(100, "foo")
-        n1 = pytree.Node(1000, [l1])
-
-        l2 = pytree.Leaf(100, "bar")
-        n1.insert_child(0, l2)
-        self.assertEqual(l2.parent, n1)
-        self.assertEqual(n1.children, [l2, l1])
-
-        l3 = pytree.Leaf(100, "abc")
-        n1.insert_child(2, l3)
-        self.assertEqual(n1.children, [l2, l1, l3])
-
-        # I don't care what it raises, so long as it's an exception
-        self.assertRaises(Exception, n1.insert_child, 0, list)
-
-    def test_node_append_child(self):
-        n1 = pytree.Node(1000, [])
-
-        l1 = pytree.Leaf(100, "foo")
-        n1.append_child(l1)
-        self.assertEqual(l1.parent, n1)
-        self.assertEqual(n1.children, [l1])
-
-        l2 = pytree.Leaf(100, "bar")
-        n1.append_child(l2)
-        self.assertEqual(l2.parent, n1)
-        self.assertEqual(n1.children, [l1, l2])
-
-        # I don't care what it raises, so long as it's an exception
-        self.assertRaises(Exception, n1.append_child, list)
-
-    def test_node_next_sibling(self):
-        n1 = pytree.Node(1000, [])
-        n2 = pytree.Node(1000, [])
-        p1 = pytree.Node(1000, [n1, n2])
-
-        self.assertIs(n1.next_sibling, n2)
-        self.assertEqual(n2.next_sibling, None)
-        self.assertEqual(p1.next_sibling, None)
-
-    def test_leaf_next_sibling(self):
-        l1 = pytree.Leaf(100, "a")
-        l2 = pytree.Leaf(100, "b")
-        p1 = pytree.Node(1000, [l1, l2])
-
-        self.assertIs(l1.next_sibling, l2)
-        self.assertEqual(l2.next_sibling, None)
-        self.assertEqual(p1.next_sibling, None)
-
-    def test_node_prev_sibling(self):
-        n1 = pytree.Node(1000, [])
-        n2 = pytree.Node(1000, [])
-        p1 = pytree.Node(1000, [n1, n2])
-
-        self.assertIs(n2.prev_sibling, n1)
-        self.assertEqual(n1.prev_sibling, None)
-        self.assertEqual(p1.prev_sibling, None)
-
-    def test_leaf_prev_sibling(self):
-        l1 = pytree.Leaf(100, "a")
-        l2 = pytree.Leaf(100, "b")
-        p1 = pytree.Node(1000, [l1, l2])
-
-        self.assertIs(l2.prev_sibling, l1)
-        self.assertEqual(l1.prev_sibling, None)
-        self.assertEqual(p1.prev_sibling, None)
-
-
-class TestPatterns(support.TestCase):
-
-    """Unit tests for tree matching patterns."""
-
-    def test_basic_patterns(self):
-        # Build a tree
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar")
-        l3 = pytree.Leaf(100, "foo")
-        n1 = pytree.Node(1000, [l1, l2])
-        n2 = pytree.Node(1000, [l3])
-        root = pytree.Node(1000, [n1, n2])
-        # Build a pattern matching a leaf
-        pl = pytree.LeafPattern(100, "foo", name="pl")
-        r = {}
-        self.assertFalse(pl.match(root, results=r))
-        self.assertEqual(r, {})
-        self.assertFalse(pl.match(n1, results=r))
-        self.assertEqual(r, {})
-        self.assertFalse(pl.match(n2, results=r))
-        self.assertEqual(r, {})
-        self.assertTrue(pl.match(l1, results=r))
-        self.assertEqual(r, {"pl": l1})
-        r = {}
-        self.assertFalse(pl.match(l2, results=r))
-        self.assertEqual(r, {})
-        # Build a pattern matching a node
-        pn = pytree.NodePattern(1000, [pl], name="pn")
-        self.assertFalse(pn.match(root, results=r))
-        self.assertEqual(r, {})
-        self.assertFalse(pn.match(n1, results=r))
-        self.assertEqual(r, {})
-        self.assertTrue(pn.match(n2, results=r))
-        self.assertEqual(r, {"pn": n2, "pl": l3})
-        r = {}
-        self.assertFalse(pn.match(l1, results=r))
-        self.assertEqual(r, {})
-        self.assertFalse(pn.match(l2, results=r))
-        self.assertEqual(r, {})
-
-    def test_wildcard(self):
-        # Build a tree for testing
-        l1 = pytree.Leaf(100, "foo")
-        l2 = pytree.Leaf(100, "bar")
-        l3 = pytree.Leaf(100, "foo")
-        n1 = pytree.Node(1000, [l1, l2])
-        n2 = pytree.Node(1000, [l3])
-        root = pytree.Node(1000, [n1, n2])
-        # Build a pattern
-        pl = pytree.LeafPattern(100, "foo", name="pl")
-        pn = pytree.NodePattern(1000, [pl], name="pn")
-        pw = pytree.WildcardPattern([[pn], [pl, pl]], name="pw")
-        r = {}
-        self.assertFalse(pw.match_seq([root], r))
-        self.assertEqual(r, {})
-        self.assertFalse(pw.match_seq([n1], r))
-        self.assertEqual(r, {})
-        self.assertTrue(pw.match_seq([n2], r))
-        # These are easier to debug
-        self.assertEqual(sorted(r.keys()), ["pl", "pn", "pw"])
-        self.assertEqual(r["pl"], l1)
-        self.assertEqual(r["pn"], n2)
-        self.assertEqual(r["pw"], [n2])
-        # But this is equivalent
-        self.assertEqual(r, {"pl": l1, "pn": n2, "pw": [n2]})
-        r = {}
-        self.assertTrue(pw.match_seq([l1, l3], r))
-        self.assertEqual(r, {"pl": l3, "pw": [l1, l3]})
-        self.assertIs(r["pl"], l3)
-        r = {}
-
-    def test_generate_matches(self):
-        la = pytree.Leaf(1, "a")
-        lb = pytree.Leaf(1, "b")
-        lc = pytree.Leaf(1, "c")
-        ld = pytree.Leaf(1, "d")
-        le = pytree.Leaf(1, "e")
-        lf = pytree.Leaf(1, "f")
-        leaves = [la, lb, lc, ld, le, lf]
-        root = pytree.Node(1000, leaves)
-        pa = pytree.LeafPattern(1, "a", "pa")
-        pb = pytree.LeafPattern(1, "b", "pb")
-        pc = pytree.LeafPattern(1, "c", "pc")
-        pd = pytree.LeafPattern(1, "d", "pd")
-        pe = pytree.LeafPattern(1, "e", "pe")
-        pf = pytree.LeafPattern(1, "f", "pf")
-        pw = pytree.WildcardPattern([[pa, pb, pc], [pd, pe],
-                                     [pa, pb], [pc, pd], [pe, pf]],
-                                    min=1, max=4, name="pw")
-        self.assertEqual([x[0] for x in pw.generate_matches(leaves)],
-                         [3, 5, 2, 4, 6])
-        pr = pytree.NodePattern(type=1000, content=[pw], name="pr")
-        matches = list(pytree.generate_matches([pr], [root]))
-        self.assertEqual(len(matches), 1)
-        c, r = matches[0]
-        self.assertEqual(c, 1)
-        self.assertEqual(str(r["pr"]), "abcdef")
-        self.assertEqual(r["pw"], [la, lb, lc, ld, le, lf])
-        for c in "abcdef":
-            self.assertEqual(r["p" + c], pytree.Leaf(1, c))
-
-    def test_has_key_example(self):
-        pattern = pytree.NodePattern(331,
-                                     (pytree.LeafPattern(7),
-                                      pytree.WildcardPattern(name="args"),
-                                      pytree.LeafPattern(8)))
-        l1 = pytree.Leaf(7, "(")
-        l2 = pytree.Leaf(3, "x")
-        l3 = pytree.Leaf(8, ")")
-        node = pytree.Node(331, [l1, l2, l3])
-        r = {}
-        self.assertTrue(pattern.match(node, r))
-        self.assertEqual(r["args"], [l2])
diff --git a/Lib/test/test_lib2to3/test_refactor.py b/Lib/test/test_lib2to3/test_refactor.py
deleted file mode 100644
index be705679f06dba..00000000000000
--- a/Lib/test/test_lib2to3/test_refactor.py
+++ /dev/null
@@ -1,337 +0,0 @@
-"""
-Unit tests for refactor.py.
-"""
-
-import sys
-import os
-import codecs
-import io
-import re
-import tempfile
-import shutil
-import unittest
-
-from lib2to3 import refactor, pygram, fixer_base
-from lib2to3.pgen2 import token
-
-
-TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "data")
-FIXER_DIR = os.path.join(TEST_DATA_DIR, "fixers")
-
-sys.path.append(FIXER_DIR)
-try:
-    _DEFAULT_FIXERS = refactor.get_fixers_from_package("myfixes")
-finally:
-    sys.path.pop()
-
-_2TO3_FIXERS = refactor.get_fixers_from_package("lib2to3.fixes")
-
-class TestRefactoringTool(unittest.TestCase):
-
-    def setUp(self):
-        sys.path.append(FIXER_DIR)
-
-    def tearDown(self):
-        sys.path.pop()
-
-    def check_instances(self, instances, classes):
-        for inst, cls in zip(instances, classes):
-            if not isinstance(inst, cls):
-                self.fail("%s are not instances of %s" % instances, classes)
-
-    def rt(self, options=None, fixers=_DEFAULT_FIXERS, explicit=None):
-        return refactor.RefactoringTool(fixers, options, explicit)
-
-    def test_print_function_option(self):
-        rt = self.rt({"print_function" : True})
-        self.assertNotIn("print", rt.grammar.keywords)
-        self.assertNotIn("print", rt.driver.grammar.keywords)
-
-    def test_exec_function_option(self):
-        rt = self.rt({"exec_function" : True})
-        self.assertNotIn("exec", rt.grammar.keywords)
-        self.assertNotIn("exec", rt.driver.grammar.keywords)
-
-    def test_write_unchanged_files_option(self):
-        rt = self.rt()
-        self.assertFalse(rt.write_unchanged_files)
-        rt = self.rt({"write_unchanged_files" : True})
-        self.assertTrue(rt.write_unchanged_files)
-
-    def test_fixer_loading_helpers(self):
-        contents = ["explicit", "first", "last", "parrot", "preorder"]
-        non_prefixed = refactor.get_all_fix_names("myfixes")
-        prefixed = refactor.get_all_fix_names("myfixes", False)
-        full_names = refactor.get_fixers_from_package("myfixes")
-        self.assertEqual(prefixed, ["fix_" + name for name in contents])
-        self.assertEqual(non_prefixed, contents)
-        self.assertEqual(full_names,
-                         ["myfixes.fix_" + name for name in contents])
-
-    def test_detect_future_features(self):
-        run = refactor._detect_future_features
-        fs = frozenset
-        empty = fs()
-        self.assertEqual(run(""), empty)
-        self.assertEqual(run("from __future__ import print_function"),
-                         fs(("print_function",)))
-        self.assertEqual(run("from __future__ import generators"),
-                         fs(("generators",)))
-        self.assertEqual(run("from __future__ import generators, feature"),
-                         fs(("generators", "feature")))
-        inp = "from __future__ import generators, print_function"
-        self.assertEqual(run(inp), fs(("generators", "print_function")))
-        inp ="from __future__ import print_function, generators"
-        self.assertEqual(run(inp), fs(("print_function", "generators")))
-        inp = "from __future__ import (print_function,)"
-        self.assertEqual(run(inp), fs(("print_function",)))
-        inp = "from __future__ import (generators, print_function)"
-        self.assertEqual(run(inp), fs(("generators", "print_function")))
-        inp = "from __future__ import (generators, nested_scopes)"
-        self.assertEqual(run(inp), fs(("generators", "nested_scopes")))
-        inp = """from __future__ import generators
-from __future__ import print_function"""
-        self.assertEqual(run(inp), fs(("generators", "print_function")))
-        invalid = ("from",
-                   "from 4",
-                   "from x",
-                   "from x 5",
-                   "from x im",
-                   "from x import",
-                   "from x import 4",
-                   )
-        for inp in invalid:
-            self.assertEqual(run(inp), empty)
-        inp = "'docstring'\nfrom __future__ import print_function"
-        self.assertEqual(run(inp), fs(("print_function",)))
-        inp = "'docstring'\n'somng'\nfrom __future__ import print_function"
-        self.assertEqual(run(inp), empty)
-        inp = "# comment\nfrom __future__ import print_function"
-        self.assertEqual(run(inp), fs(("print_function",)))
-        inp = "# comment\n'doc'\nfrom __future__ import print_function"
-        self.assertEqual(run(inp), fs(("print_function",)))
-        inp = "class x: pass\nfrom __future__ import print_function"
-        self.assertEqual(run(inp), empty)
-
-    def test_get_headnode_dict(self):
-        class NoneFix(fixer_base.BaseFix):
-            pass
-
-        class FileInputFix(fixer_base.BaseFix):
-            PATTERN = "file_input< any * >"
-
-        class SimpleFix(fixer_base.BaseFix):
-            PATTERN = "'name'"
-
-        no_head = NoneFix({}, [])
-        with_head = FileInputFix({}, [])
-        simple = SimpleFix({}, [])
-        d = refactor._get_headnode_dict([no_head, with_head, simple])
-        top_fixes = d.pop(pygram.python_symbols.file_input)
-        self.assertEqual(top_fixes, [with_head, no_head])
-        name_fixes = d.pop(token.NAME)
-        self.assertEqual(name_fixes, [simple, no_head])
-        for fixes in d.values():
-            self.assertEqual(fixes, [no_head])
-
-    def test_fixer_loading(self):
-        from myfixes.fix_first import FixFirst
-        from myfixes.fix_last import FixLast
-        from myfixes.fix_parrot import FixParrot
-        from myfixes.fix_preorder import FixPreorder
-
-        rt = self.rt()
-        pre, post = rt.get_fixers()
-
-        self.check_instances(pre, [FixPreorder])
-        self.check_instances(post, [FixFirst, FixParrot, FixLast])
-
-    def test_naughty_fixers(self):
-        self.assertRaises(ImportError, self.rt, fixers=["not_here"])
-        self.assertRaises(refactor.FixerError, self.rt, fixers=["no_fixer_cls"])
-        self.assertRaises(refactor.FixerError, self.rt, fixers=["bad_order"])
-
-    def test_refactor_string(self):
-        rt = self.rt()
-        input = "def parrot(): pass\n\n"
-        tree = rt.refactor_string(input, "<test>")
-        self.assertNotEqual(str(tree), input)
-
-        input = "def f(): pass\n\n"
-        tree = rt.refactor_string(input, "<test>")
-        self.assertEqual(str(tree), input)
-
-    def test_refactor_stdin(self):
-
-        class MyRT(refactor.RefactoringTool):
-
-            def print_output(self, old_text, new_text, filename, equal):
-                results.extend([old_text, new_text, filename, equal])
-
-        results = []
-        rt = MyRT(_DEFAULT_FIXERS)
-        save = sys.stdin
-        sys.stdin = io.StringIO("def parrot(): pass\n\n")
-        try:
-            rt.refactor_stdin()
-        finally:
-            sys.stdin = save
-        expected = ["def parrot(): pass\n\n",
-                    "def cheese(): pass\n\n",
-                    "<stdin>", False]
-        self.assertEqual(results, expected)
-
-    def check_file_refactoring(self, test_file, fixers=_2TO3_FIXERS,
-                               options=None, mock_log_debug=None,
-                               actually_write=True):
-        test_file = self.init_test_file(test_file)
-        old_contents = self.read_file(test_file)
-        rt = self.rt(fixers=fixers, options=options)
-        if mock_log_debug:
-            rt.log_debug = mock_log_debug
-
-        rt.refactor_file(test_file)
-        self.assertEqual(old_contents, self.read_file(test_file))
-
-        if not actually_write:
-            return
-        rt.refactor_file(test_file, True)
-        new_contents = self.read_file(test_file)
-        self.assertNotEqual(old_contents, new_contents)
-        return new_contents
-
-    def init_test_file(self, test_file):
-        tmpdir = tempfile.mkdtemp(prefix="2to3-test_refactor")
-        self.addCleanup(shutil.rmtree, tmpdir)
-        shutil.copy(test_file, tmpdir)
-        test_file = os.path.join(tmpdir, os.path.basename(test_file))
-        os.chmod(test_file, 0o644)
-        return test_file
-
-    def read_file(self, test_file):
-        with open(test_file, "rb") as fp:
-            return fp.read()
-
-    def refactor_file(self, test_file, fixers=_2TO3_FIXERS):
-        test_file = self.init_test_file(test_file)
-        old_contents = self.read_file(test_file)
-        rt = self.rt(fixers=fixers)
-        rt.refactor_file(test_file, True)
-        new_contents = self.read_file(test_file)
-        return old_contents, new_contents
-
-    def test_refactor_file(self):
-        test_file = os.path.join(FIXER_DIR, "parrot_example.py")
-        self.check_file_refactoring(test_file, _DEFAULT_FIXERS)
-
-    def test_refactor_file_write_unchanged_file(self):
-        test_file = os.path.join(FIXER_DIR, "parrot_example.py")
-        debug_messages = []
-        def recording_log_debug(msg, *args):
-            debug_messages.append(msg % args)
-        self.check_file_refactoring(test_file, fixers=(),
-                                    options={"write_unchanged_files": True},
-                                    mock_log_debug=recording_log_debug,
-                                    actually_write=False)
-        # Testing that it logged this message when write=False was passed is
-        # sufficient to see that it did not bail early after "No changes".
-        message_regex = r"Not writing changes to .*%s" % \
-                re.escape(os.sep + os.path.basename(test_file))
-        for message in debug_messages:
-            if "Not writing changes" in message:
-                self.assertRegex(message, message_regex)
-                break
-        else:
-            self.fail("%r not matched in %r" % (message_regex, debug_messages))
-
-    def test_refactor_dir(self):
-        def check(structure, expected):
-            def mock_refactor_file(self, f, *args):
-                got.append(f)
-            save_func = refactor.RefactoringTool.refactor_file
-            refactor.RefactoringTool.refactor_file = mock_refactor_file
-            rt = self.rt()
-            got = []
-            dir = tempfile.mkdtemp(prefix="2to3-test_refactor")
-            try:
-                os.mkdir(os.path.join(dir, "a_dir"))
-                for fn in structure:
-                    open(os.path.join(dir, fn), "wb").close()
-                rt.refactor_dir(dir)
-            finally:
-                refactor.RefactoringTool.refactor_file = save_func
-                shutil.rmtree(dir)
-            self.assertEqual(got,
-                             [os.path.join(dir, path) for path in expected])
-        check([], [])
-        tree = ["nothing",
-                "hi.py",
-                ".dumb",
-                ".after.py",
-                "notpy.npy",
-                "sappy"]
-        expected = ["hi.py"]
-        check(tree, expected)
-        tree = ["hi.py",
-                os.path.join("a_dir", "stuff.py")]
-        check(tree, tree)
-
-    def test_file_encoding(self):
-        fn = os.path.join(TEST_DATA_DIR, "different_encoding.py")
-        self.check_file_refactoring(fn)
-
-    def test_false_file_encoding(self):
-        fn = os.path.join(TEST_DATA_DIR, "false_encoding.py")
-        data = self.check_file_refactoring(fn)
-
-    def test_bom(self):
-        fn = os.path.join(TEST_DATA_DIR, "bom.py")
-        data = self.check_file_refactoring(fn)
-        self.assertTrue(data.startswith(codecs.BOM_UTF8))
-
-    def test_crlf_newlines(self):
-        old_sep = os.linesep
-        os.linesep = "\r\n"
-        try:
-            fn = os.path.join(TEST_DATA_DIR, "crlf.py")
-            fixes = refactor.get_fixers_from_package("lib2to3.fixes")
-            self.check_file_refactoring(fn, fixes)
-        finally:
-            os.linesep = old_sep
-
-    def test_crlf_unchanged(self):
-        fn = os.path.join(TEST_DATA_DIR, "crlf.py")
-        old, new = self.refactor_file(fn)
-        self.assertIn(b"\r\n", old)
-        self.assertIn(b"\r\n", new)
-        self.assertNotIn(b"\r\r\n", new)
-
-    def test_refactor_docstring(self):
-        rt = self.rt()
-
-        doc = """
->>> example()
-42
-"""
-        out = rt.refactor_docstring(doc, "<test>")
-        self.assertEqual(out, doc)
-
-        doc = """
->>> def parrot():
-...      return 43
-"""
-        out = rt.refactor_docstring(doc, "<test>")
-        self.assertNotEqual(out, doc)
-
-    def test_explicit(self):
-        from myfixes.fix_explicit import FixExplicit
-
-        rt = self.rt(fixers=["myfixes.fix_explicit"])
-        self.assertEqual(len(rt.post_order), 0)
-
-        rt = self.rt(explicit=["myfixes.fix_explicit"])
-        for fix in rt.post_order:
-            if isinstance(fix, FixExplicit):
-                break
-        else:
-            self.fail("explicit fixer not loaded")
diff --git a/Lib/test/test_lib2to3/test_util.py b/Lib/test/test_lib2to3/test_util.py
deleted file mode 100644
index c6c613972dac7e..00000000000000
--- a/Lib/test/test_lib2to3/test_util.py
+++ /dev/null
@@ -1,591 +0,0 @@
-""" Test suite for the code in fixer_util """
-
-# Testing imports
-from . import support
-
-# Local imports
-from lib2to3.pytree import Node, Leaf
-from lib2to3 import fixer_util
-from lib2to3.fixer_util import Attr, Name, Call, Comma
-from lib2to3.pgen2 import token
-
-def parse(code, strip_levels=0):
-    # The topmost node is file_input, which we don't care about.
-    # The next-topmost node is a *_stmt node, which we also don't care about
-    tree = support.parse_string(code)
-    for i in range(strip_levels):
-        tree = tree.children[0]
-    tree.parent = None
-    return tree
-
-class MacroTestCase(support.TestCase):
-    def assertStr(self, node, string):
-        if isinstance(node, (tuple, list)):
-            node = Node(fixer_util.syms.simple_stmt, node)
-        self.assertEqual(str(node), string)
-
-
-class Test_is_tuple(support.TestCase):
-    def is_tuple(self, string):
-        return fixer_util.is_tuple(parse(string, strip_levels=2))
-
-    def test_valid(self):
-        self.assertTrue(self.is_tuple("(a, b)"))
-        self.assertTrue(self.is_tuple("(a, (b, c))"))
-        self.assertTrue(self.is_tuple("((a, (b, c)),)"))
-        self.assertTrue(self.is_tuple("(a,)"))
-        self.assertTrue(self.is_tuple("()"))
-
-    def test_invalid(self):
-        self.assertFalse(self.is_tuple("(a)"))
-        self.assertFalse(self.is_tuple("('foo') % (b, c)"))
-
-
-class Test_is_list(support.TestCase):
-    def is_list(self, string):
-        return fixer_util.is_list(parse(string, strip_levels=2))
-
-    def test_valid(self):
-        self.assertTrue(self.is_list("[]"))
-        self.assertTrue(self.is_list("[a]"))
-        self.assertTrue(self.is_list("[a, b]"))
-        self.assertTrue(self.is_list("[a, [b, c]]"))
-        self.assertTrue(self.is_list("[[a, [b, c]],]"))
-
-    def test_invalid(self):
-        self.assertFalse(self.is_list("[]+[]"))
-
-
-class Test_Attr(MacroTestCase):
-    def test(self):
-        call = parse("foo()", strip_levels=2)
-
-        self.assertStr(Attr(Name("a"), Name("b")), "a.b")
-        self.assertStr(Attr(call, Name("b")), "foo().b")
-
-    def test_returns(self):
-        attr = Attr(Name("a"), Name("b"))
-        self.assertEqual(type(attr), list)
-
-
-class Test_Name(MacroTestCase):
-    def test(self):
-        self.assertStr(Name("a"), "a")
-        self.assertStr(Name("foo.foo().bar"), "foo.foo().bar")
-        self.assertStr(Name("a", prefix="b"), "ba")
-
-
-class Test_Call(MacroTestCase):
-    def _Call(self, name, args=None, prefix=None):
-        """Help the next test"""
-        children = []
-        if isinstance(args, list):
-            for arg in args:
-                children.append(arg)
-                children.append(Comma())
-            children.pop()
-        return Call(Name(name), children, prefix)
-
-    def test(self):
-        kids = [None,
-                [Leaf(token.NUMBER, 1), Leaf(token.NUMBER, 2),
-                 Leaf(token.NUMBER, 3)],
-                [Leaf(token.NUMBER, 1), Leaf(token.NUMBER, 3),
-                 Leaf(token.NUMBER, 2), Leaf(token.NUMBER, 4)],
-                [Leaf(token.STRING, "b"), Leaf(token.STRING, "j", prefix=" ")]
-                ]
-        self.assertStr(self._Call("A"), "A()")
-        self.assertStr(self._Call("b", kids[1]), "b(1,2,3)")
-        self.assertStr(self._Call("a.b().c", kids[2]), "a.b().c(1,3,2,4)")
-        self.assertStr(self._Call("d", kids[3], prefix=" "), " d(b, j)")
-
-
-class Test_does_tree_import(support.TestCase):
-    def _find_bind_rec(self, name, node):
-        # Search a tree for a binding -- used to find the starting
-        # point for these tests.
-        c = fixer_util.find_binding(name, node)
-        if c: return c
-        for child in node.children:
-            c = self._find_bind_rec(name, child)
-            if c: return c
-
-    def does_tree_import(self, package, name, string):
-        node = parse(string)
-        # Find the binding of start -- that's what we'll go from
-        node = self._find_bind_rec('start', node)
-        return fixer_util.does_tree_import(package, name, node)
-
-    def try_with(self, string):
-        failing_tests = (("a", "a", "from a import b"),
-                         ("a.d", "a", "from a.d import b"),
-                         ("d.a", "a", "from d.a import b"),
-                         (None, "a", "import b"),
-                         (None, "a", "import b, c, d"))
-        for package, name, import_ in failing_tests:
-            n = self.does_tree_import(package, name, import_ + "\n" + string)
-            self.assertFalse(n)
-            n = self.does_tree_import(package, name, string + "\n" + import_)
-            self.assertFalse(n)
-
-        passing_tests = (("a", "a", "from a import a"),
-                         ("x", "a", "from x import a"),
-                         ("x", "a", "from x import b, c, a, d"),
-                         ("x.b", "a", "from x.b import a"),
-                         ("x.b", "a", "from x.b import b, c, a, d"),
-                         (None, "a", "import a"),
-                         (None, "a", "import b, c, a, d"))
-        for package, name, import_ in passing_tests:
-            n = self.does_tree_import(package, name, import_ + "\n" + string)
-            self.assertTrue(n)
-            n = self.does_tree_import(package, name, string + "\n" + import_)
-            self.assertTrue(n)
-
-    def test_in_function(self):
-        self.try_with("def foo():\n\tbar.baz()\n\tstart=3")
-
-class Test_find_binding(support.TestCase):
-    def find_binding(self, name, string, package=None):
-        return fixer_util.find_binding(name, parse(string), package)
-
-    def test_simple_assignment(self):
-        self.assertTrue(self.find_binding("a", "a = b"))
-        self.assertTrue(self.find_binding("a", "a = [b, c, d]"))
-        self.assertTrue(self.find_binding("a", "a = foo()"))
-        self.assertTrue(self.find_binding("a", "a = foo().foo.foo[6][foo]"))
-        self.assertFalse(self.find_binding("a", "foo = a"))
-        self.assertFalse(self.find_binding("a", "foo = (a, b, c)"))
-
-    def test_tuple_assignment(self):
-        self.assertTrue(self.find_binding("a", "(a,) = b"))
-        self.assertTrue(self.find_binding("a", "(a, b, c) = [b, c, d]"))
-        self.assertTrue(self.find_binding("a", "(c, (d, a), b) = foo()"))
-        self.assertTrue(self.find_binding("a", "(a, b) = foo().foo[6][foo]"))
-        self.assertFalse(self.find_binding("a", "(foo, b) = (b, a)"))
-        self.assertFalse(self.find_binding("a", "(foo, (b, c)) = (a, b, c)"))
-
-    def test_list_assignment(self):
-        self.assertTrue(self.find_binding("a", "[a] = b"))
-        self.assertTrue(self.find_binding("a", "[a, b, c] = [b, c, d]"))
-        self.assertTrue(self.find_binding("a", "[c, [d, a], b] = foo()"))
-        self.assertTrue(self.find_binding("a", "[a, b] = foo().foo[a][foo]"))
-        self.assertFalse(self.find_binding("a", "[foo, b] = (b, a)"))
-        self.assertFalse(self.find_binding("a", "[foo, [b, c]] = (a, b, c)"))
-
-    def test_invalid_assignments(self):
-        self.assertFalse(self.find_binding("a", "foo.a = 5"))
-        self.assertFalse(self.find_binding("a", "foo[a] = 5"))
-        self.assertFalse(self.find_binding("a", "foo(a) = 5"))
-        self.assertFalse(self.find_binding("a", "foo(a, b) = 5"))
-
-    def test_simple_import(self):
-        self.assertTrue(self.find_binding("a", "import a"))
-        self.assertTrue(self.find_binding("a", "import b, c, a, d"))
-        self.assertFalse(self.find_binding("a", "import b"))
-        self.assertFalse(self.find_binding("a", "import b, c, d"))
-
-    def test_from_import(self):
-        self.assertTrue(self.find_binding("a", "from x import a"))
-        self.assertTrue(self.find_binding("a", "from a import a"))
-        self.assertTrue(self.find_binding("a", "from x import b, c, a, d"))
-        self.assertTrue(self.find_binding("a", "from x.b import a"))
-        self.assertTrue(self.find_binding("a", "from x.b import b, c, a, d"))
-        self.assertFalse(self.find_binding("a", "from a import b"))
-        self.assertFalse(self.find_binding("a", "from a.d import b"))
-        self.assertFalse(self.find_binding("a", "from d.a import b"))
-
-    def test_import_as(self):
-        self.assertTrue(self.find_binding("a", "import b as a"))
-        self.assertTrue(self.find_binding("a", "import b as a, c, a as f, d"))
-        self.assertFalse(self.find_binding("a", "import a as f"))
-        self.assertFalse(self.find_binding("a", "import b, c as f, d as e"))
-
-    def test_from_import_as(self):
-        self.assertTrue(self.find_binding("a", "from x import b as a"))
-        self.assertTrue(self.find_binding("a", "from x import g as a, d as b"))
-        self.assertTrue(self.find_binding("a", "from x.b import t as a"))
-        self.assertTrue(self.find_binding("a", "from x.b import g as a, d"))
-        self.assertFalse(self.find_binding("a", "from a import b as t"))
-        self.assertFalse(self.find_binding("a", "from a.d import b as t"))
-        self.assertFalse(self.find_binding("a", "from d.a import b as t"))
-
-    def test_simple_import_with_package(self):
-        self.assertTrue(self.find_binding("b", "import b"))
-        self.assertTrue(self.find_binding("b", "import b, c, d"))
-        self.assertFalse(self.find_binding("b", "import b", "b"))
-        self.assertFalse(self.find_binding("b", "import b, c, d", "c"))
-
-    def test_from_import_with_package(self):
-        self.assertTrue(self.find_binding("a", "from x import a", "x"))
-        self.assertTrue(self.find_binding("a", "from a import a", "a"))
-        self.assertTrue(self.find_binding("a", "from x import *", "x"))
-        self.assertTrue(self.find_binding("a", "from x import b, c, a, d", "x"))
-        self.assertTrue(self.find_binding("a", "from x.b import a", "x.b"))
-        self.assertTrue(self.find_binding("a", "from x.b import *", "x.b"))
-        self.assertTrue(self.find_binding("a", "from x.b import b, c, a, d", "x.b"))
-        self.assertFalse(self.find_binding("a", "from a import b", "a"))
-        self.assertFalse(self.find_binding("a", "from a.d import b", "a.d"))
-        self.assertFalse(self.find_binding("a", "from d.a import b", "a.d"))
-        self.assertFalse(self.find_binding("a", "from x.y import *", "a.b"))
-
-    def test_import_as_with_package(self):
-        self.assertFalse(self.find_binding("a", "import b.c as a", "b.c"))
-        self.assertFalse(self.find_binding("a", "import a as f", "f"))
-        self.assertFalse(self.find_binding("a", "import a as f", "a"))
-
-    def test_from_import_as_with_package(self):
-        # Because it would take a lot of special-case code in the fixers
-        # to deal with from foo import bar as baz, we'll simply always
-        # fail if there is an "from ... import ... as ..."
-        self.assertFalse(self.find_binding("a", "from x import b as a", "x"))
-        self.assertFalse(self.find_binding("a", "from x import g as a, d as b", "x"))
-        self.assertFalse(self.find_binding("a", "from x.b import t as a", "x.b"))
-        self.assertFalse(self.find_binding("a", "from x.b import g as a, d", "x.b"))
-        self.assertFalse(self.find_binding("a", "from a import b as t", "a"))
-        self.assertFalse(self.find_binding("a", "from a import b as t", "b"))
-        self.assertFalse(self.find_binding("a", "from a import b as t", "t"))
-
-    def test_function_def(self):
-        self.assertTrue(self.find_binding("a", "def a(): pass"))
-        self.assertTrue(self.find_binding("a", "def a(b, c, d): pass"))
-        self.assertTrue(self.find_binding("a", "def a(): b = 7"))
-        self.assertFalse(self.find_binding("a", "def d(b, (c, a), e): pass"))
-        self.assertFalse(self.find_binding("a", "def d(a=7): pass"))
-        self.assertFalse(self.find_binding("a", "def d(a): pass"))
-        self.assertFalse(self.find_binding("a", "def d(): a = 7"))
-
-        s = """
-            def d():
-                def a():
-                    pass"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_class_def(self):
-        self.assertTrue(self.find_binding("a", "class a: pass"))
-        self.assertTrue(self.find_binding("a", "class a(): pass"))
-        self.assertTrue(self.find_binding("a", "class a(b): pass"))
-        self.assertTrue(self.find_binding("a", "class a(b, c=8): pass"))
-        self.assertFalse(self.find_binding("a", "class d: pass"))
-        self.assertFalse(self.find_binding("a", "class d(a): pass"))
-        self.assertFalse(self.find_binding("a", "class d(b, a=7): pass"))
-        self.assertFalse(self.find_binding("a", "class d(b, *a): pass"))
-        self.assertFalse(self.find_binding("a", "class d(b, **a): pass"))
-        self.assertFalse(self.find_binding("a", "class d: a = 7"))
-
-        s = """
-            class d():
-                class a():
-                    pass"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_for(self):
-        self.assertTrue(self.find_binding("a", "for a in r: pass"))
-        self.assertTrue(self.find_binding("a", "for a, b in r: pass"))
-        self.assertTrue(self.find_binding("a", "for (a, b) in r: pass"))
-        self.assertTrue(self.find_binding("a", "for c, (a,) in r: pass"))
-        self.assertTrue(self.find_binding("a", "for c, (a, b) in r: pass"))
-        self.assertTrue(self.find_binding("a", "for c in r: a = c"))
-        self.assertFalse(self.find_binding("a", "for c in a: pass"))
-
-    def test_for_nested(self):
-        s = """
-            for b in r:
-                for a in b:
-                    pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for a, c in b:
-                    pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for (a, c) in b:
-                    pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for (a,) in b:
-                    pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for c, (a, d) in b:
-                    pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for c in b:
-                    a = 7"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for c in b:
-                    d = a"""
-        self.assertFalse(self.find_binding("a", s))
-
-        s = """
-            for b in r:
-                for c in a:
-                    d = 7"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_if(self):
-        self.assertTrue(self.find_binding("a", "if b in r: a = c"))
-        self.assertFalse(self.find_binding("a", "if a in r: d = e"))
-
-    def test_if_nested(self):
-        s = """
-            if b in r:
-                if c in d:
-                    a = c"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            if b in r:
-                if c in d:
-                    c = a"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_while(self):
-        self.assertTrue(self.find_binding("a", "while b in r: a = c"))
-        self.assertFalse(self.find_binding("a", "while a in r: d = e"))
-
-    def test_while_nested(self):
-        s = """
-            while b in r:
-                while c in d:
-                    a = c"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            while b in r:
-                while c in d:
-                    c = a"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_try_except(self):
-        s = """
-            try:
-                a = 6
-            except:
-                b = 8"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except:
-                a = 6"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except KeyError:
-                pass
-            except:
-                a = 6"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except:
-                b = 6"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_try_except_nested(self):
-        s = """
-            try:
-                try:
-                    a = 6
-                except:
-                    pass
-            except:
-                b = 8"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except:
-                try:
-                    a = 6
-                except:
-                    pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except:
-                try:
-                    pass
-                except:
-                    a = 6"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                try:
-                    b = 8
-                except KeyError:
-                    pass
-                except:
-                    a = 6
-            except:
-                pass"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                pass
-            except:
-                try:
-                    b = 8
-                except KeyError:
-                    pass
-                except:
-                    a = 6"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except:
-                b = 6"""
-        self.assertFalse(self.find_binding("a", s))
-
-        s = """
-            try:
-                try:
-                    b = 8
-                except:
-                    c = d
-            except:
-                try:
-                    b = 6
-                except:
-                    t = 8
-                except:
-                    o = y"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_try_except_finally(self):
-        s = """
-            try:
-                c = 6
-            except:
-                b = 8
-            finally:
-                a = 9"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            finally:
-                a = 6"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            finally:
-                b = 6"""
-        self.assertFalse(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            except:
-                b = 9
-            finally:
-                b = 6"""
-        self.assertFalse(self.find_binding("a", s))
-
-    def test_try_except_finally_nested(self):
-        s = """
-            try:
-                c = 6
-            except:
-                b = 8
-            finally:
-                try:
-                    a = 9
-                except:
-                    b = 9
-                finally:
-                    c = 9"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            finally:
-                try:
-                    pass
-                finally:
-                    a = 6"""
-        self.assertTrue(self.find_binding("a", s))
-
-        s = """
-            try:
-                b = 8
-            finally:
-                try:
-                    b = 6
-                finally:
-                    b = 7"""
-        self.assertFalse(self.find_binding("a", s))
-
-class Test_touch_import(support.TestCase):
-
-    def test_after_docstring(self):
-        node = parse('"""foo"""\nbar()')
-        fixer_util.touch_import(None, "foo", node)
-        self.assertEqual(str(node), '"""foo"""\nimport foo\nbar()\n\n')
-
-    def test_after_imports(self):
-        node = parse('"""foo"""\nimport bar\nbar()')
-        fixer_util.touch_import(None, "foo", node)
-        self.assertEqual(str(node), '"""foo"""\nimport bar\nimport foo\nbar()\n\n')
-
-    def test_beginning(self):
-        node = parse('bar()')
-        fixer_util.touch_import(None, "foo", node)
-        self.assertEqual(str(node), 'import foo\nbar()\n\n')
-
-    def test_from_import(self):
-        node = parse('bar()')
-        fixer_util.touch_import("html", "escape", node)
-        self.assertEqual(str(node), 'from html import escape\nbar()\n\n')
-
-    def test_name_import(self):
-        node = parse('bar()')
-        fixer_util.touch_import(None, "cgi", node)
-        self.assertEqual(str(node), 'import cgi\nbar()\n\n')
-
-class Test_find_indentation(support.TestCase):
-
-    def test_nothing(self):
-        fi = fixer_util.find_indentation
-        node = parse("node()")
-        self.assertEqual(fi(node), "")
-        node = parse("")
-        self.assertEqual(fi(node), "")
-
-    def test_simple(self):
-        fi = fixer_util.find_indentation
-        node = parse("def f():\n    x()")
-        self.assertEqual(fi(node), "")
-        self.assertEqual(fi(node.children[0].children[4].children[2]), "    ")
-        node = parse("def f():\n    x()\n    y()")
-        self.assertEqual(fi(node.children[0].children[4].children[4]), "    ")
diff --git a/Lib/test/test_listcomps.py b/Lib/test/test_listcomps.py
index 23e1b8c1ce3193..f95a78aff0c711 100644
--- a/Lib/test/test_listcomps.py
+++ b/Lib/test/test_listcomps.py
@@ -1,5 +1,6 @@
 import doctest
 import textwrap
+import types
 import unittest
 
 
@@ -92,7 +93,8 @@
 
 
 class ListComprehensionTest(unittest.TestCase):
-    def _check_in_scopes(self, code, outputs=None, ns=None, scopes=None, raises=()):
+    def _check_in_scopes(self, code, outputs=None, ns=None, scopes=None, raises=(),
+                         exec_func=exec):
         code = textwrap.dedent(code)
         scopes = scopes or ["module", "class", "function"]
         for scope in scopes:
@@ -119,13 +121,13 @@ def get_output(moddict, name):
                         return moddict[name]
                 newns = ns.copy() if ns else {}
                 try:
-                    exec(newcode, newns)
+                    exec_func(newcode, newns)
                 except raises as e:
                     # We care about e.g. NameError vs UnboundLocalError
                     self.assertIs(type(e), raises)
                 else:
                     for k, v in (outputs or {}).items():
-                        self.assertEqual(get_output(newns, k), v)
+                        self.assertEqual(get_output(newns, k), v, k)
 
     def test_lambdas_with_iteration_var_as_default(self):
         code = """
@@ -200,7 +202,8 @@ def f():
             y = [g for x in [1]]
         """
         outputs = {"y": [2]}
-        self._check_in_scopes(code, outputs)
+        self._check_in_scopes(code, outputs, scopes=["module", "function"])
+        self._check_in_scopes(code, scopes=["class"], raises=NameError)
 
     def test_inner_cell_shadows_outer_redefined(self):
         code = """
@@ -328,7 +331,8 @@ def test_nested_2(self):
             y = [x for [x ** x for x in range(x)][x - 1] in l]
         """
         outputs = {"y": [3, 3, 3]}
-        self._check_in_scopes(code, outputs)
+        self._check_in_scopes(code, outputs, scopes=["module", "function"])
+        self._check_in_scopes(code, scopes=["class"], raises=NameError)
 
     def test_nested_3(self):
         code = """
@@ -379,6 +383,277 @@ def f():
         with self.assertRaises(UnboundLocalError):
             f()
 
+    def test_global_outside_cellvar_inside_plus_freevar(self):
+        code = """
+            a = 1
+            def f():
+                func, = [(lambda: b) for b in [a]]
+                return b, func()
+            x = f()
+        """
+        self._check_in_scopes(
+            code, {"x": (2, 1)}, ns={"b": 2}, scopes=["function", "module"])
+        # inside a class, the `a = 1` assignment is not visible
+        self._check_in_scopes(code, raises=NameError, scopes=["class"])
+
+    def test_cell_in_nested_comprehension(self):
+        code = """
+            a = 1
+            def f():
+                (func, inner_b), = [[lambda: b for b in c] + [b] for c in [[a]]]
+                return b, inner_b, func()
+            x = f()
+        """
+        self._check_in_scopes(
+            code, {"x": (2, 2, 1)}, ns={"b": 2}, scopes=["function", "module"])
+        # inside a class, the `a = 1` assignment is not visible
+        self._check_in_scopes(code, raises=NameError, scopes=["class"])
+
+    def test_name_error_in_class_scope(self):
+        code = """
+            y = 1
+            [x + y for x in range(2)]
+        """
+        self._check_in_scopes(code, raises=NameError, scopes=["class"])
+
+    def test_global_in_class_scope(self):
+        code = """
+            y = 2
+            vals = [(x, y) for x in range(2)]
+        """
+        outputs = {"vals": [(0, 1), (1, 1)]}
+        self._check_in_scopes(code, outputs, ns={"y": 1}, scopes=["class"])
+
+    def test_in_class_scope_inside_function_1(self):
+        code = """
+            class C:
+                y = 2
+                vals = [(x, y) for x in range(2)]
+            vals = C.vals
+        """
+        outputs = {"vals": [(0, 1), (1, 1)]}
+        self._check_in_scopes(code, outputs, ns={"y": 1}, scopes=["function"])
+
+    def test_in_class_scope_inside_function_2(self):
+        code = """
+            y = 1
+            class C:
+                y = 2
+                vals = [(x, y) for x in range(2)]
+            vals = C.vals
+        """
+        outputs = {"vals": [(0, 1), (1, 1)]}
+        self._check_in_scopes(code, outputs, scopes=["function"])
+
+    def test_in_class_scope_with_global(self):
+        code = """
+            y = 1
+            class C:
+                global y
+                y = 2
+                # Ensure the listcomp uses the global, not the value in the
+                # class namespace
+                locals()['y'] = 3
+                vals = [(x, y) for x in range(2)]
+            vals = C.vals
+        """
+        outputs = {"vals": [(0, 2), (1, 2)]}
+        self._check_in_scopes(code, outputs, scopes=["module", "class"])
+        outputs = {"vals": [(0, 1), (1, 1)]}
+        self._check_in_scopes(code, outputs, scopes=["function"])
+
+    def test_in_class_scope_with_nonlocal(self):
+        code = """
+            y = 1
+            class C:
+                nonlocal y
+                y = 2
+                # Ensure the listcomp uses the global, not the value in the
+                # class namespace
+                locals()['y'] = 3
+                vals = [(x, y) for x in range(2)]
+            vals = C.vals
+        """
+        outputs = {"vals": [(0, 2), (1, 2)]}
+        self._check_in_scopes(code, outputs, scopes=["function"])
+
+    def test_nested_has_free_var(self):
+        code = """
+            items = [a for a in [1] if [a for _ in [0]]]
+        """
+        outputs = {"items": [1]}
+        self._check_in_scopes(code, outputs, scopes=["class"])
+
+    def test_nested_free_var_not_bound_in_outer_comp(self):
+        code = """
+            z = 1
+            items = [a for a in [1] if [x for x in [1] if z]]
+        """
+        self._check_in_scopes(code, {"items": [1]}, scopes=["module", "function"])
+        self._check_in_scopes(code, {"items": []}, ns={"z": 0}, scopes=["class"])
+
+    def test_nested_free_var_in_iter(self):
+        code = """
+            items = [_C for _C in [1] for [0, 1][[x for x in [1] if _C][0]] in [2]]
+        """
+        self._check_in_scopes(code, {"items": [1]})
+
+    def test_nested_free_var_in_expr(self):
+        code = """
+            items = [(_C, [x for x in [1] if _C]) for _C in [0, 1]]
+        """
+        self._check_in_scopes(code, {"items": [(0, []), (1, [1])]})
+
+    def test_nested_listcomp_in_lambda(self):
+        code = """
+            f = [(z, lambda y: [(x, y, z) for x in [3]]) for z in [1]]
+            (z, func), = f
+            out = func(2)
+        """
+        self._check_in_scopes(code, {"z": 1, "out": [(3, 2, 1)]})
+
+    def test_lambda_in_iter(self):
+        code = """
+            (func, c), = [(a, b) for b in [1] for a in [lambda : a]]
+            d = func()
+            assert d is func
+            # must use "a" in this scope
+            e = a if False else None
+        """
+        self._check_in_scopes(code, {"c": 1, "e": None})
+
+    def test_assign_to_comp_iter_var_in_outer_function(self):
+        code = """
+            a = [1 for a in [0]]
+        """
+        self._check_in_scopes(code, {"a": [1]}, scopes=["function"])
+
+    def test_no_leakage_to_locals(self):
+        code = """
+            def b():
+                [a for b in [1] for _ in []]
+                return b, locals()
+            r, s = b()
+            x = r is b
+            y = list(s.keys())
+        """
+        self._check_in_scopes(code, {"x": True, "y": []}, scopes=["module"])
+        self._check_in_scopes(code, {"x": True, "y": ["b"]}, scopes=["function"])
+        self._check_in_scopes(code, raises=NameError, scopes=["class"])
+
+    def test_iter_var_available_in_locals(self):
+        code = """
+            l = [1, 2]
+            y = 0
+            items = [locals()["x"] for x in l]
+            items2 = [vars()["x"] for x in l]
+            items3 = [("x" in dir()) for x in l]
+            items4 = [eval("x") for x in l]
+            # x is available, and does not overwrite y
+            [exec("y = x") for x in l]
+        """
+        self._check_in_scopes(
+            code,
+            {
+                "items": [1, 2],
+                "items2": [1, 2],
+                "items3": [True, True],
+                "items4": [1, 2],
+                "y": 0
+            }
+        )
+
+    def test_comp_in_try_except(self):
+        template = """
+            value = ["ab"]
+            result = snapshot = None
+            try:
+                result = [{func}(value) for value in value]
+            except:
+                snapshot = value
+                raise
+        """
+        # No exception.
+        code = template.format(func='len')
+        self._check_in_scopes(code, {"value": ["ab"], "result": [2], "snapshot": None})
+        # Handles exception.
+        code = template.format(func='int')
+        self._check_in_scopes(code, {"value": ["ab"], "result": None, "snapshot": ["ab"]},
+                              raises=ValueError)
+
+    def test_comp_in_try_finally(self):
+        template = """
+            value = ["ab"]
+            result = snapshot = None
+            try:
+                result = [{func}(value) for value in value]
+            finally:
+                snapshot = value
+        """
+        # No exception.
+        code = template.format(func='len')
+        self._check_in_scopes(code, {"value": ["ab"], "result": [2], "snapshot": ["ab"]})
+        # Handles exception.
+        code = template.format(func='int')
+        self._check_in_scopes(code, {"value": ["ab"], "result": None, "snapshot": ["ab"]},
+                              raises=ValueError)
+
+    def test_exception_in_post_comp_call(self):
+        code = """
+            value = [1, None]
+            try:
+                [v for v in value].sort()
+            except:
+                pass
+        """
+        self._check_in_scopes(code, {"value": [1, None]})
+
+    def test_frame_locals(self):
+        code = """
+            val = [sys._getframe().f_locals for a in [0]][0]["a"]
+        """
+        import sys
+        self._check_in_scopes(code, {"val": 0}, ns={"sys": sys})
+
+    def _recursive_replace(self, maybe_code):
+        if not isinstance(maybe_code, types.CodeType):
+            return maybe_code
+        return maybe_code.replace(co_consts=tuple(
+            self._recursive_replace(c) for c in maybe_code.co_consts
+        ))
+
+    def _replacing_exec(self, code_string, ns):
+        co = compile(code_string, "<string>", "exec")
+        co = self._recursive_replace(co)
+        exec(co, ns)
+
+    def test_code_replace(self):
+        code = """
+            x = 3
+            [x for x in (1, 2)]
+            dir()
+            y = [x]
+        """
+        self._check_in_scopes(code, {"y": [3], "x": 3})
+        self._check_in_scopes(code, {"y": [3], "x": 3}, exec_func=self._replacing_exec)
+
+    def test_code_replace_extended_arg(self):
+        num_names = 300
+        assignments = "; ".join(f"x{i} = {i}" for i in range(num_names))
+        name_list = ", ".join(f"x{i}" for i in range(num_names))
+        expected = {
+            "y": list(range(num_names)),
+            **{f"x{i}": i for i in range(num_names)}
+        }
+        code = f"""
+            {assignments}
+            [({name_list}) for {name_list} in (range(300),)]
+            dir()
+            y = [{name_list}]
+        """
+        self._check_in_scopes(code, expected)
+        self._check_in_scopes(code, expected, exec_func=self._replacing_exec)
+
 
 __test__ = {'doctests' : doctests}
 
diff --git a/Lib/test/test_locale.py b/Lib/test/test_locale.py
index b0d7998559759e..da4bd79746a476 100644
--- a/Lib/test/test_locale.py
+++ b/Lib/test/test_locale.py
@@ -1,6 +1,8 @@
 from decimal import Decimal
 from test.support import verbose, is_android, is_emscripten, is_wasi
 from test.support.warnings_helper import check_warnings
+from test.support.import_helper import import_fresh_module
+from unittest import mock
 import unittest
 import locale
 import sys
@@ -523,6 +525,15 @@ def test_getencoding(self):
         # make sure it is valid
         codecs.lookup(enc)
 
+    def test_getencoding_fallback(self):
+        # When _locale.getencoding() is missing, locale.getencoding() uses
+        # the Python filesystem
+        encoding = 'FALLBACK_ENCODING'
+        with mock.patch.object(sys, 'getfilesystemencoding',
+                               return_value=encoding):
+            locale_fallback = import_fresh_module('locale', blocked=['_locale'])
+            self.assertEqual(locale_fallback.getencoding(), encoding)
+
     def test_getpreferredencoding(self):
         # Invoke getpreferredencoding to make sure it does not cause exceptions.
         enc = locale.getpreferredencoding()
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
index 9176d8eeb56d01..89be432e4b78c0 100644
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -76,6 +76,13 @@
     pass
 
 
+# gh-89363: Skip fork() test if Python is built with Address Sanitizer (ASAN)
+# to work around a libasan race condition, dead lock in pthread_create().
+skip_if_asan_fork = unittest.skipIf(
+    support.HAVE_ASAN_FORK_BUG,
+    "libasan has a pthread_create() dead lock related to thread+fork")
+
+
 class BaseTest(unittest.TestCase):
 
     """Base class for logging tests."""
@@ -90,8 +97,7 @@ def setUp(self):
         self._threading_key = threading_helper.threading_setup()
 
         logger_dict = logging.getLogger().manager.loggerDict
-        logging._acquireLock()
-        try:
+        with logging._lock:
             self.saved_handlers = logging._handlers.copy()
             self.saved_handler_list = logging._handlerList[:]
             self.saved_loggers = saved_loggers = logger_dict.copy()
@@ -101,8 +107,6 @@ def setUp(self):
             for name in saved_loggers:
                 logger_states[name] = getattr(saved_loggers[name],
                                               'disabled', None)
-        finally:
-            logging._releaseLock()
 
         # Set two unused loggers
         self.logger1 = logging.getLogger("\xab\xd7\xbb")
@@ -136,8 +140,7 @@ def tearDown(self):
             self.root_logger.removeHandler(h)
             h.close()
         self.root_logger.setLevel(self.original_logging_level)
-        logging._acquireLock()
-        try:
+        with logging._lock:
             logging._levelToName.clear()
             logging._levelToName.update(self.saved_level_to_name)
             logging._nameToLevel.clear()
@@ -154,8 +157,6 @@ def tearDown(self):
             for name in self.logger_states:
                 if logger_states[name] is not None:
                     self.saved_loggers[name].disabled = logger_states[name]
-        finally:
-            logging._releaseLock()
 
         self.doCleanups()
         threading_helper.threading_cleanup(*self._threading_key)
@@ -680,6 +681,7 @@ def test_path_objects(self):
         support.is_emscripten, "Emscripten cannot fstat unlinked files."
     )
     @threading_helper.requires_working_threading()
+    @support.requires_resource('walltime')
     def test_race(self):
         # Issue #14632 refers.
         def remove_loop(fname, tries):
@@ -729,6 +731,7 @@ def remove_loop(fname, tries):
     # register_at_fork mechanism is also present and used.
     @support.requires_fork()
     @threading_helper.requires_working_threading()
+    @skip_if_asan_fork
     def test_post_fork_child_no_deadlock(self):
         """Ensure child logging locks are not held; bpo-6721 & bpo-36533."""
         class _OurHandler(logging.Handler):
@@ -738,11 +741,8 @@ def __init__(self):
                     stream=open('/dev/null', 'wt', encoding='utf-8'))
 
             def emit(self, record):
-                self.sub_handler.acquire()
-                try:
+                with self.sub_handler.lock:
                     self.sub_handler.emit(record)
-                finally:
-                    self.sub_handler.release()
 
         self.assertEqual(len(logging._handlers), 0)
         refed_h = _OurHandler()
@@ -758,29 +758,22 @@ def emit(self, record):
         fork_happened__release_locks_and_end_thread = threading.Event()
 
         def lock_holder_thread_fn():
-            logging._acquireLock()
-            try:
-                refed_h.acquire()
-                try:
-                    # Tell the main thread to do the fork.
-                    locks_held__ready_to_fork.set()
-
-                    # If the deadlock bug exists, the fork will happen
-                    # without dealing with the locks we hold, deadlocking
-                    # the child.
-
-                    # Wait for a successful fork or an unreasonable amount of
-                    # time before releasing our locks.  To avoid a timing based
-                    # test we'd need communication from os.fork() as to when it
-                    # has actually happened.  Given this is a regression test
-                    # for a fixed issue, potentially less reliably detecting
-                    # regression via timing is acceptable for simplicity.
-                    # The test will always take at least this long. :(
-                    fork_happened__release_locks_and_end_thread.wait(0.5)
-                finally:
-                    refed_h.release()
-            finally:
-                logging._releaseLock()
+            with logging._lock, refed_h.lock:
+                # Tell the main thread to do the fork.
+                locks_held__ready_to_fork.set()
+
+                # If the deadlock bug exists, the fork will happen
+                # without dealing with the locks we hold, deadlocking
+                # the child.
+
+                # Wait for a successful fork or an unreasonable amount of
+                # time before releasing our locks.  To avoid a timing based
+                # test we'd need communication from os.fork() as to when it
+                # has actually happened.  Given this is a regression test
+                # for a fixed issue, potentially less reliably detecting
+                # regression via timing is acceptable for simplicity.
+                # The test will always take at least this long. :(
+                fork_happened__release_locks_and_end_thread.wait(0.5)
 
         lock_holder_thread = threading.Thread(
                 target=lock_holder_thread_fn,
@@ -1756,6 +1749,42 @@ def test_config_set_handler_names(self):
         self.apply_config(test_config)
         self.assertEqual(logging.getLogger().handlers[0].name, 'hand1')
 
+    def test_exception_if_confg_file_is_invalid(self):
+        test_config = """
+            [loggers]
+            keys=root
+
+            [handlers]
+            keys=hand1
+
+            [formatters]
+            keys=form1
+
+            [logger_root]
+            handlers=hand1
+
+            [handler_hand1]
+            class=StreamHandler
+            formatter=form1
+
+            [formatter_form1]
+            format=%(levelname)s ++ %(message)s
+
+            prince
+            """
+
+        file = io.StringIO(textwrap.dedent(test_config))
+        self.assertRaises(RuntimeError, logging.config.fileConfig, file)
+
+    def test_exception_if_confg_file_is_empty(self):
+        fd, fn = tempfile.mkstemp(prefix='test_empty_', suffix='.ini')
+        os.close(fd)
+        self.assertRaises(RuntimeError, logging.config.fileConfig, fn)
+        os.remove(fn)
+
+    def test_exception_if_config_file_does_not_exist(self):
+        self.assertRaises(FileNotFoundError, logging.config.fileConfig, 'filenotfound')
+
     def test_defaults_do_no_interpolation(self):
         """bpo-33802 defaults should not get interpolated"""
         ini = textwrap.dedent("""
@@ -2043,17 +2072,17 @@ def test_output(self):
         # The log message sent to the SysLogHandler is properly received.
         logger = logging.getLogger("slh")
         logger.error("sp\xe4m")
-        self.handled.wait()
+        self.handled.wait(support.LONG_TIMEOUT)
         self.assertEqual(self.log_output, b'<11>sp\xc3\xa4m\x00')
         self.handled.clear()
         self.sl_hdlr.append_nul = False
         logger.error("sp\xe4m")
-        self.handled.wait()
+        self.handled.wait(support.LONG_TIMEOUT)
         self.assertEqual(self.log_output, b'<11>sp\xc3\xa4m')
         self.handled.clear()
         self.sl_hdlr.ident = "h\xe4m-"
         logger.error("sp\xe4m")
-        self.handled.wait()
+        self.handled.wait(support.LONG_TIMEOUT)
         self.assertEqual(self.log_output, b'<11>h\xc3\xa4m-sp\xc3\xa4m')
 
     def test_udp_reconnection(self):
@@ -2061,7 +2090,7 @@ def test_udp_reconnection(self):
         self.sl_hdlr.close()
         self.handled.clear()
         logger.error("sp\xe4m")
-        self.handled.wait(0.1)
+        self.handled.wait(support.LONG_TIMEOUT)
         self.assertEqual(self.log_output, b'<11>sp\xc3\xa4m\x00')
 
 @unittest.skipUnless(hasattr(socket, "AF_UNIX"), "Unix sockets required")
@@ -2133,7 +2162,7 @@ def test_output(self):
                     sslctx = None
                 else:
                     here = os.path.dirname(__file__)
-                    localhost_cert = os.path.join(here, "keycert.pem")
+                    localhost_cert = os.path.join(here, "certdata", "keycert.pem")
                     sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
                     sslctx.load_cert_chain(localhost_cert)
 
@@ -2969,6 +2998,39 @@ class ConfigDictTest(BaseTest):
         },
     }
 
+    class CustomFormatter(logging.Formatter):
+        custom_property = "."
+
+        def format(self, record):
+            return super().format(record)
+
+    config17 = {
+        'version': 1,
+        'formatters': {
+            "custom": {
+                "()": CustomFormatter,
+                "style": "{",
+                "datefmt": "%Y-%m-%d %H:%M:%S",
+                "format": "{message}", # <-- to force an exception when configuring
+                ".": {
+                    "custom_property": "value"
+                }
+            }
+        },
+        'handlers' : {
+            'hand1' : {
+                'class' : 'logging.StreamHandler',
+                'formatter' : 'custom',
+                'level' : 'NOTSET',
+                'stream'  : 'ext://sys.stdout',
+            },
+        },
+        'root' : {
+            'level' : 'WARNING',
+            'handlers' : ['hand1'],
+        },
+    }
+
     bad_format = {
         "version": 1,
         "formatters": {
@@ -3450,7 +3512,10 @@ def test_config16_ok(self):
             {'msg': 'Hello'}))
         self.assertEqual(result, 'Hello ++ defaultvalue')
 
-
+    def test_config17_ok(self):
+        self.apply_config(self.config17)
+        h = logging._handlers['hand1']
+        self.assertEqual(h.formatter.custom_property, 'value')
 
     def setup_via_listener(self, text, verify=None):
         text = text.encode("utf-8")
@@ -3626,7 +3691,28 @@ def test_baseconfig(self):
         d = {
             'atuple': (1, 2, 3),
             'alist': ['a', 'b', 'c'],
-            'adict': {'d': 'e', 'f': 3 },
+            'adict': {
+                'd': 'e', 'f': 3 ,
+                'alpha numeric 1 with spaces' : 5,
+                'aplha numeric 1 %( - © ©ß¯' : 9,
+                'alpha numeric ] 1 with spaces' : 15,
+                'aplha ]] numeric 1 %( - © ©ß¯]' : 19,
+                ' aplha [ numeric 1 %( - © ©ß¯] ' : 11,
+                ' aplha ' : 32,
+                '' : 10,
+                'nest4' : {
+                    'd': 'e', 'f': 3 ,
+                    'alpha numeric 1 with spaces' : 5,
+                    'aplha numeric 1 %( - © ©ß¯' : 9,
+                    '' : 10,
+                    'somelist' :  ('g', ('h', 'i'), 'j'),
+                    'somedict' : {
+                        'a' : 1,
+                        'a with 1 and space' : 3,
+                        'a with ( and space' : 4,
+                    }
+                }
+            },
             'nest1': ('g', ('h', 'i'), 'j'),
             'nest2': ['k', ['l', 'm'], 'n'],
             'nest3': ['o', 'cfg://alist', 'p'],
@@ -3638,11 +3724,36 @@ def test_baseconfig(self):
         self.assertEqual(bc.convert('cfg://nest2[1][1]'), 'm')
         self.assertEqual(bc.convert('cfg://adict.d'), 'e')
         self.assertEqual(bc.convert('cfg://adict[f]'), 3)
+        self.assertEqual(bc.convert('cfg://adict[alpha numeric 1 with spaces]'), 5)
+        self.assertEqual(bc.convert('cfg://adict[aplha numeric 1 %( - © ©ß¯]'), 9)
+        self.assertEqual(bc.convert('cfg://adict[]'), 10)
+        self.assertEqual(bc.convert('cfg://adict.nest4.d'), 'e')
+        self.assertEqual(bc.convert('cfg://adict.nest4[d]'), 'e')
+        self.assertEqual(bc.convert('cfg://adict[nest4].d'), 'e')
+        self.assertEqual(bc.convert('cfg://adict[nest4][f]'), 3)
+        self.assertEqual(bc.convert('cfg://adict[nest4][alpha numeric 1 with spaces]'), 5)
+        self.assertEqual(bc.convert('cfg://adict[nest4][aplha numeric 1 %( - © ©ß¯]'), 9)
+        self.assertEqual(bc.convert('cfg://adict[nest4][]'), 10)
+        self.assertEqual(bc.convert('cfg://adict[nest4][somelist][0]'), 'g')
+        self.assertEqual(bc.convert('cfg://adict[nest4][somelist][1][0]'), 'h')
+        self.assertEqual(bc.convert('cfg://adict[nest4][somelist][1][1]'), 'i')
+        self.assertEqual(bc.convert('cfg://adict[nest4][somelist][2]'), 'j')
+        self.assertEqual(bc.convert('cfg://adict[nest4].somedict.a'), 1)
+        self.assertEqual(bc.convert('cfg://adict[nest4].somedict[a]'), 1)
+        self.assertEqual(bc.convert('cfg://adict[nest4].somedict[a with 1 and space]'), 3)
+        self.assertEqual(bc.convert('cfg://adict[nest4].somedict[a with ( and space]'), 4)
+        self.assertEqual(bc.convert('cfg://adict.nest4.somelist[1][1]'), 'i')
+        self.assertEqual(bc.convert('cfg://adict.nest4.somelist[2]'), 'j')
+        self.assertEqual(bc.convert('cfg://adict.nest4.somedict.a'), 1)
+        self.assertEqual(bc.convert('cfg://adict.nest4.somedict[a]'), 1)
         v = bc.convert('cfg://nest3')
         self.assertEqual(v.pop(1), ['a', 'b', 'c'])
         self.assertRaises(KeyError, bc.convert, 'cfg://nosuch')
         self.assertRaises(ValueError, bc.convert, 'cfg://!')
         self.assertRaises(KeyError, bc.convert, 'cfg://adict[2]')
+        self.assertRaises(KeyError, bc.convert, 'cfg://adict[alpha numeric ] 1 with spaces]')
+        self.assertRaises(ValueError, bc.convert, 'cfg://adict[ aplha ]] numeric 1 %( - © ©ß¯] ]')
+        self.assertRaises(ValueError, bc.convert, 'cfg://adict[ aplha [ numeric 1 %( - © ©ß¯] ]')
 
     def test_namedtuple(self):
         # see bpo-39142
@@ -5397,6 +5508,46 @@ def process(self, msg, kwargs):
         self.assertIs(adapter.manager, orig_manager)
         self.assertIs(self.logger.manager, orig_manager)
 
+    def test_extra_in_records(self):
+        self.adapter = logging.LoggerAdapter(logger=self.logger,
+                                             extra={'foo': '1'})
+
+        self.adapter.critical('foo should be here')
+        self.assertEqual(len(self.recording.records), 1)
+        record = self.recording.records[0]
+        self.assertTrue(hasattr(record, 'foo'))
+        self.assertEqual(record.foo, '1')
+
+    def test_extra_not_merged_by_default(self):
+        self.adapter.critical('foo should NOT be here', extra={'foo': 'nope'})
+        self.assertEqual(len(self.recording.records), 1)
+        record = self.recording.records[0]
+        self.assertFalse(hasattr(record, 'foo'))
+
+    def test_extra_merged(self):
+        self.adapter = logging.LoggerAdapter(logger=self.logger,
+                                             extra={'foo': '1'},
+                                             merge_extra=True)
+
+        self.adapter.critical('foo and bar should be here', extra={'bar': '2'})
+        self.assertEqual(len(self.recording.records), 1)
+        record = self.recording.records[0]
+        self.assertTrue(hasattr(record, 'foo'))
+        self.assertTrue(hasattr(record, 'bar'))
+        self.assertEqual(record.foo, '1')
+        self.assertEqual(record.bar, '2')
+
+    def test_extra_merged_log_call_has_precedence(self):
+        self.adapter = logging.LoggerAdapter(logger=self.logger,
+                                             extra={'foo': '1'},
+                                             merge_extra=True)
+
+        self.adapter.critical('foo shall be min', extra={'foo': '2'})
+        self.assertEqual(len(self.recording.records), 1)
+        record = self.recording.records[0]
+        self.assertTrue(hasattr(record, 'foo'))
+        self.assertEqual(record.foo, '2')
+
 
 class LoggerTest(BaseTest, AssertErrorMessage):
 
diff --git a/Lib/test/test_lzma.py b/Lib/test/test_lzma.py
index ac53bdda2f1747..13b200912f6abd 100644
--- a/Lib/test/test_lzma.py
+++ b/Lib/test/test_lzma.py
@@ -352,10 +352,10 @@ def test_compressor_bigmem(self, size):
     @bigmemtest(size=_4G + 100, memuse=3)
     def test_decompressor_bigmem(self, size):
         lzd = LZMADecompressor()
-        blocksize = 10 * 1024 * 1024
+        blocksize = min(10 * 1024 * 1024, size)
         block = random.randbytes(blocksize)
         try:
-            input = block * (size // blocksize + 1)
+            input = block * ((size-1) // blocksize + 1)
             cdata = lzma.compress(input)
             ddata = lzd.decompress(cdata)
             self.assertEqual(ddata, input)
diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index 4c592eaf34da23..23fcbfac1f9c89 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -116,10 +116,13 @@ def test_add_nonascii_string_header_raises(self):
         self.assertMailboxEmpty()
 
     def test_add_that_raises_leaves_mailbox_empty(self):
+        class CustomError(Exception): ...
+        exc_msg = "a fake error"
+
         def raiser(*args, **kw):
-            raise Exception("a fake error")
+            raise CustomError(exc_msg)
         support.patch(self, email.generator.BytesGenerator, 'flatten', raiser)
-        with self.assertRaises(Exception):
+        with self.assertRaisesRegex(CustomError, exc_msg):
             self._box.add(email.message_from_string("From: Alphöso"))
         self.assertEqual(len(self._box), 0)
         self._box.close()
@@ -844,6 +847,92 @@ def test_lock_unlock(self):
         self._box.lock()
         self._box.unlock()
 
+    def test_get_info(self):
+        # Test getting message info from Maildir, not the message.
+        msg = mailbox.MaildirMessage(self._template % 0)
+        key = self._box.add(msg)
+        self.assertEqual(self._box.get_info(key), '')
+        msg.set_info('OurTestInfo')
+        self._box[key] = msg
+        self.assertEqual(self._box.get_info(key), 'OurTestInfo')
+
+    def test_set_info(self):
+        # Test setting message info from Maildir, not the message.
+        # This should immediately rename the message file.
+        msg = mailbox.MaildirMessage(self._template % 0)
+        key = self._box.add(msg)
+        def check_info(oldinfo, newinfo):
+            oldfilename = os.path.join(self._box._path, self._box._lookup(key))
+            newsubpath = self._box._lookup(key).split(self._box.colon)[0]
+            if newinfo:
+                newsubpath += self._box.colon + newinfo
+            newfilename = os.path.join(self._box._path, newsubpath)
+            # assert initial conditions
+            self.assertEqual(self._box.get_info(key), oldinfo)
+            if not oldinfo:
+                self.assertNotIn(self._box._lookup(key), self._box.colon)
+            self.assertTrue(os.path.exists(oldfilename))
+            if oldinfo != newinfo:
+                self.assertFalse(os.path.exists(newfilename))
+            # do the rename
+            self._box.set_info(key, newinfo)
+            # assert post conditions
+            if not newinfo:
+                self.assertNotIn(self._box._lookup(key), self._box.colon)
+            if oldinfo != newinfo:
+                self.assertFalse(os.path.exists(oldfilename))
+            self.assertTrue(os.path.exists(newfilename))
+            self.assertEqual(self._box.get_info(key), newinfo)
+        # none -> has info
+        check_info('', 'info1')
+        # has info -> same info
+        check_info('info1', 'info1')
+        # has info -> different info
+        check_info('info1', 'info2')
+        # has info -> none
+        check_info('info2', '')
+        # none -> none
+        check_info('', '')
+
+    def test_get_flags(self):
+        # Test getting message flags from Maildir, not the message.
+        msg = mailbox.MaildirMessage(self._template % 0)
+        key = self._box.add(msg)
+        self.assertEqual(self._box.get_flags(key), '')
+        msg.set_flags('T')
+        self._box[key] = msg
+        self.assertEqual(self._box.get_flags(key), 'T')
+
+    def test_set_flags(self):
+        msg = mailbox.MaildirMessage(self._template % 0)
+        key = self._box.add(msg)
+        self.assertEqual(self._box.get_flags(key), '')
+        self._box.set_flags(key, 'S')
+        self.assertEqual(self._box.get_flags(key), 'S')
+
+    def test_add_flag(self):
+        msg = mailbox.MaildirMessage(self._template % 0)
+        key = self._box.add(msg)
+        self.assertEqual(self._box.get_flags(key), '')
+        self._box.add_flag(key, 'B')
+        self.assertEqual(self._box.get_flags(key), 'B')
+        self._box.add_flag(key, 'B')
+        self.assertEqual(self._box.get_flags(key), 'B')
+        self._box.add_flag(key, 'AC')
+        self.assertEqual(self._box.get_flags(key), 'ABC')
+
+    def test_remove_flag(self):
+        msg = mailbox.MaildirMessage(self._template % 0)
+        key = self._box.add(msg)
+        self._box.set_flags(key, 'abc')
+        self.assertEqual(self._box.get_flags(key), 'abc')
+        self._box.remove_flag(key, 'b')
+        self.assertEqual(self._box.get_flags(key), 'ac')
+        self._box.remove_flag(key, 'b')
+        self.assertEqual(self._box.get_flags(key), 'ac')
+        self._box.remove_flag(key, 'ac')
+        self.assertEqual(self._box.get_flags(key), '')
+
     def test_folder (self):
         # Test for bug #1569790: verify that folders returned by .get_folder()
         # use the same factory function.
diff --git a/Lib/test/test_mailcap.py b/Lib/test/test_mailcap.py
deleted file mode 100644
index 8a94b0cb1f27c7..00000000000000
--- a/Lib/test/test_mailcap.py
+++ /dev/null
@@ -1,274 +0,0 @@
-import copy
-import os
-import sys
-import test.support
-import unittest
-from test.support import os_helper
-from test.support import warnings_helper
-
-
-mailcap = warnings_helper.import_deprecated('mailcap')
-
-
-# Location of mailcap file
-MAILCAPFILE = test.support.findfile("mailcap.txt")
-
-# Dict to act as mock mailcap entry for this test
-# The keys and values should match the contents of MAILCAPFILE
-MAILCAPDICT = {
-    'application/x-movie':
-        [{'compose': 'moviemaker %s',
-          'x11-bitmap': '"/usr/lib/Zmail/bitmaps/movie.xbm"',
-          'description': '"Movie"',
-          'view': 'movieplayer %s',
-          'lineno': 4}],
-    'application/*':
-        [{'copiousoutput': '',
-          'view': 'echo "This is \\"%t\\" but        is 50 \\% Greek to me" \\; cat %s',
-          'lineno': 5}],
-    'audio/basic':
-        [{'edit': 'audiocompose %s',
-          'compose': 'audiocompose %s',
-          'description': '"An audio fragment"',
-          'view': 'showaudio %s',
-          'lineno': 6}],
-    'video/mpeg':
-        [{'view': 'mpeg_play %s', 'lineno': 13}],
-    'application/postscript':
-        [{'needsterminal': '', 'view': 'ps-to-terminal %s', 'lineno': 1},
-         {'compose': 'idraw %s', 'view': 'ps-to-terminal %s', 'lineno': 2}],
-    'application/x-dvi':
-        [{'view': 'xdvi %s', 'lineno': 3}],
-    'message/external-body':
-        [{'composetyped': 'extcompose %s',
-          'description': '"A reference to data stored in an external location"',
-          'needsterminal': '',
-          'view': 'showexternal %s %{access-type} %{name} %{site}     %{directory} %{mode} %{server}',
-          'lineno': 10}],
-    'text/richtext':
-        [{'test': 'test "`echo     %{charset} | tr \'[A-Z]\' \'[a-z]\'`"  = iso-8859-8',
-          'copiousoutput': '',
-          'view': 'shownonascii iso-8859-8 -e richtext -p %s',
-          'lineno': 11}],
-    'image/x-xwindowdump':
-        [{'view': 'display %s', 'lineno': 9}],
-    'audio/*':
-        [{'view': '/usr/local/bin/showaudio %t', 'lineno': 7}],
-    'video/*':
-        [{'view': 'animate %s', 'lineno': 12}],
-    'application/frame':
-        [{'print': '"cat %s | lp"', 'view': 'showframe %s', 'lineno': 0}],
-    'image/rgb':
-        [{'view': 'display %s', 'lineno': 8}]
-}
-
-# For backwards compatibility, readmailcapfile() and lookup() still support
-# the old version of mailcapdict without line numbers.
-MAILCAPDICT_DEPRECATED = copy.deepcopy(MAILCAPDICT)
-for entry_list in MAILCAPDICT_DEPRECATED.values():
-    for entry in entry_list:
-        entry.pop('lineno')
-
-
-class HelperFunctionTest(unittest.TestCase):
-
-    def test_listmailcapfiles(self):
-        # The return value for listmailcapfiles() will vary by system.
-        # So verify that listmailcapfiles() returns a list of strings that is of
-        # non-zero length.
-        mcfiles = mailcap.listmailcapfiles()
-        self.assertIsInstance(mcfiles, list)
-        for m in mcfiles:
-            self.assertIsInstance(m, str)
-        with os_helper.EnvironmentVarGuard() as env:
-            # According to RFC 1524, if MAILCAPS env variable exists, use that
-            # and only that.
-            if "MAILCAPS" in env:
-                env_mailcaps = env["MAILCAPS"].split(os.pathsep)
-            else:
-                env_mailcaps = ["/testdir1/.mailcap", "/testdir2/mailcap"]
-                env["MAILCAPS"] = os.pathsep.join(env_mailcaps)
-                mcfiles = mailcap.listmailcapfiles()
-        self.assertEqual(env_mailcaps, mcfiles)
-
-    def test_readmailcapfile(self):
-        # Test readmailcapfile() using test file. It should match MAILCAPDICT.
-        with open(MAILCAPFILE, 'r') as mcf:
-            with self.assertWarns(DeprecationWarning):
-                d = mailcap.readmailcapfile(mcf)
-        self.assertDictEqual(d, MAILCAPDICT_DEPRECATED)
-
-    def test_lookup(self):
-        # Test without key
-        expected = [{'view': 'animate %s', 'lineno': 12},
-                    {'view': 'mpeg_play %s', 'lineno': 13}]
-        actual = mailcap.lookup(MAILCAPDICT, 'video/mpeg')
-        self.assertListEqual(expected, actual)
-
-        # Test with key
-        key = 'compose'
-        expected = [{'edit': 'audiocompose %s',
-                     'compose': 'audiocompose %s',
-                     'description': '"An audio fragment"',
-                     'view': 'showaudio %s',
-                     'lineno': 6}]
-        actual = mailcap.lookup(MAILCAPDICT, 'audio/basic', key)
-        self.assertListEqual(expected, actual)
-
-        # Test on user-defined dicts without line numbers
-        expected = [{'view': 'mpeg_play %s'}, {'view': 'animate %s'}]
-        actual = mailcap.lookup(MAILCAPDICT_DEPRECATED, 'video/mpeg')
-        self.assertListEqual(expected, actual)
-
-    def test_subst(self):
-        plist = ['id=1', 'number=2', 'total=3']
-        # test case: ([field, MIMEtype, filename, plist=[]], <expected string>)
-        test_cases = [
-            (["", "audio/*", "foo.txt"], ""),
-            (["echo foo", "audio/*", "foo.txt"], "echo foo"),
-            (["echo %s", "audio/*", "foo.txt"], "echo foo.txt"),
-            (["echo %t", "audio/wav", "foo.txt"], "echo audio/wav"),
-            (["echo \\%t", "audio/*", "foo.txt"], "echo %t"),
-            (["echo foo", "audio/*", "foo.txt", plist], "echo foo"),
-            (["echo %{total}", "audio/*", "foo.txt", plist], "echo 3")
-        ]
-        for tc in test_cases:
-            self.assertEqual(mailcap.subst(*tc[0]), tc[1])
-
-
-class GetcapsTest(unittest.TestCase):
-
-    def test_mock_getcaps(self):
-        # Test mailcap.getcaps() using mock mailcap file in this dir.
-        # Temporarily override any existing system mailcap file by pointing the
-        # MAILCAPS environment variable to our mock file.
-        with os_helper.EnvironmentVarGuard() as env:
-            env["MAILCAPS"] = MAILCAPFILE
-            caps = mailcap.getcaps()
-            self.assertDictEqual(caps, MAILCAPDICT)
-
-    def test_system_mailcap(self):
-        # Test mailcap.getcaps() with mailcap file(s) on system, if any.
-        caps = mailcap.getcaps()
-        self.assertIsInstance(caps, dict)
-        mailcapfiles = mailcap.listmailcapfiles()
-        existingmcfiles = [mcf for mcf in mailcapfiles if os.path.exists(mcf)]
-        if existingmcfiles:
-            # At least 1 mailcap file exists, so test that.
-            for (k, v) in caps.items():
-                self.assertIsInstance(k, str)
-                self.assertIsInstance(v, list)
-                for e in v:
-                    self.assertIsInstance(e, dict)
-        else:
-            # No mailcap files on system. getcaps() should return empty dict.
-            self.assertEqual({}, caps)
-
-
-class FindmatchTest(unittest.TestCase):
-
-    def test_findmatch(self):
-
-        # default findmatch arguments
-        c = MAILCAPDICT
-        fname = "foo.txt"
-        plist = ["access-type=default", "name=john", "site=python.org",
-                 "directory=/tmp", "mode=foo", "server=bar"]
-        audio_basic_entry = {
-            'edit': 'audiocompose %s',
-            'compose': 'audiocompose %s',
-            'description': '"An audio fragment"',
-            'view': 'showaudio %s',
-            'lineno': 6
-        }
-        audio_entry = {"view": "/usr/local/bin/showaudio %t", 'lineno': 7}
-        video_entry = {'view': 'animate %s', 'lineno': 12}
-        message_entry = {
-            'composetyped': 'extcompose %s',
-            'description': '"A reference to data stored in an external location"', 'needsterminal': '',
-            'view': 'showexternal %s %{access-type} %{name} %{site}     %{directory} %{mode} %{server}',
-            'lineno': 10,
-        }
-
-        # test case: (findmatch args, findmatch keyword args, expected output)
-        #   positional args: caps, MIMEtype
-        #   keyword args: key="view", filename="/dev/null", plist=[]
-        #   output: (command line, mailcap entry)
-        cases = [
-            ([{}, "video/mpeg"], {}, (None, None)),
-            ([c, "foo/bar"], {}, (None, None)),
-            ([c, "video/mpeg"], {}, ('animate /dev/null', video_entry)),
-            ([c, "audio/basic", "edit"], {}, ("audiocompose /dev/null", audio_basic_entry)),
-            ([c, "audio/basic", "compose"], {}, ("audiocompose /dev/null", audio_basic_entry)),
-            ([c, "audio/basic", "description"], {}, ('"An audio fragment"', audio_basic_entry)),
-            ([c, "audio/basic", "foobar"], {}, (None, None)),
-            ([c, "video/*"], {"filename": fname}, ("animate %s" % fname, video_entry)),
-            ([c, "audio/basic", "compose"],
-             {"filename": fname},
-             ("audiocompose %s" % fname, audio_basic_entry)),
-            ([c, "audio/basic"],
-             {"key": "description", "filename": fname},
-             ('"An audio fragment"', audio_basic_entry)),
-            ([c, "audio/wav"],
-             {"filename": fname},
-             ("/usr/local/bin/showaudio audio/wav", audio_entry)),
-            ([c, "message/external-body"],
-             {"plist": plist},
-             ("showexternal /dev/null default john python.org     /tmp foo bar", message_entry))
-        ]
-        self._run_cases(cases)
-
-    @unittest.skipUnless(os.name == "posix", "Requires 'test' command on system")
-    @unittest.skipIf(sys.platform == "vxworks", "'test' command is not supported on VxWorks")
-    @unittest.skipUnless(
-        test.support.has_subprocess_support,
-        "'test' command needs process support."
-    )
-    def test_test(self):
-        # findmatch() will automatically check any "test" conditions and skip
-        # the entry if the check fails.
-        caps = {"test/pass": [{"test": "test 1 -eq 1"}],
-                "test/fail": [{"test": "test 1 -eq 0"}]}
-        # test case: (findmatch args, findmatch keyword args, expected output)
-        #   positional args: caps, MIMEtype, key ("test")
-        #   keyword args: N/A
-        #   output: (command line, mailcap entry)
-        cases = [
-            # findmatch will return the mailcap entry for test/pass because it evaluates to true
-            ([caps, "test/pass", "test"], {}, ("test 1 -eq 1", {"test": "test 1 -eq 1"})),
-            # findmatch will return None because test/fail evaluates to false
-            ([caps, "test/fail", "test"], {}, (None, None))
-        ]
-        self._run_cases(cases)
-
-    def test_unsafe_mailcap_input(self):
-        with self.assertWarnsRegex(mailcap.UnsafeMailcapInput,
-                                   'Refusing to substitute parameter.*'
-                                   'into a shell command'):
-            unsafe_param = mailcap.subst("echo %{total}",
-                                         "audio/wav",
-                                         "foo.txt",
-                                         ["total=*"])
-            self.assertEqual(unsafe_param, None)
-
-        with self.assertWarnsRegex(mailcap.UnsafeMailcapInput,
-                                   'Refusing to substitute MIME type'
-                                   '.*into a shell'):
-            unsafe_mimetype = mailcap.subst("echo %t", "audio/*", "foo.txt")
-            self.assertEqual(unsafe_mimetype, None)
-
-        with self.assertWarnsRegex(mailcap.UnsafeMailcapInput,
-                                   'Refusing to use mailcap with filename.*'
-                                   'Use a safe temporary filename.'):
-            unsafe_filename = mailcap.findmatch(MAILCAPDICT,
-                                                "audio/wav",
-                                                filename="foo*.txt")
-            self.assertEqual(unsafe_filename, (None, None))
-
-    def _run_cases(self, cases):
-        for c in cases:
-            self.assertEqual(mailcap.findmatch(*c[0], **c[1]), c[2])
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index f282434c9a3359..ad382fc2b59891 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -33,8 +33,8 @@
 else:
     file = __file__
 test_dir = os.path.dirname(file) or os.curdir
-math_testcases = os.path.join(test_dir, 'math_testcases.txt')
-test_file = os.path.join(test_dir, 'cmath_testcases.txt')
+math_testcases = os.path.join(test_dir, 'mathdata', 'math_testcases.txt')
+test_file = os.path.join(test_dir, 'mathdata', 'cmath_testcases.txt')
 
 
 def to_ulps(x):
@@ -235,6 +235,10 @@ def __init__(self, value):
     def __index__(self):
         return self.value
 
+class BadDescr:
+    def __get__(self, obj, objtype=None):
+        raise ValueError
+
 class MathTests(unittest.TestCase):
 
     def ftest(self, name, got, expected, ulp_tol=5, abs_tol=0.0):
@@ -324,6 +328,7 @@ def testAtan2(self):
         self.ftest('atan2(0, 1)', math.atan2(0, 1), 0)
         self.ftest('atan2(1, 1)', math.atan2(1, 1), math.pi/4)
         self.ftest('atan2(1, 0)', math.atan2(1, 0), math.pi/2)
+        self.ftest('atan2(1, -1)', math.atan2(1, -1), 3*math.pi/4)
 
         # math.atan2(0, x)
         self.ftest('atan2(0., -inf)', math.atan2(0., NINF), math.pi)
@@ -417,16 +422,22 @@ def __ceil__(self):
                 return 42
         class TestNoCeil:
             pass
+        class TestBadCeil:
+            __ceil__ = BadDescr()
         self.assertEqual(math.ceil(TestCeil()), 42)
         self.assertEqual(math.ceil(FloatCeil()), 42)
         self.assertEqual(math.ceil(FloatLike(42.5)), 43)
         self.assertRaises(TypeError, math.ceil, TestNoCeil())
+        self.assertRaises(ValueError, math.ceil, TestBadCeil())
 
         t = TestNoCeil()
         t.__ceil__ = lambda *args: args
         self.assertRaises(TypeError, math.ceil, t)
         self.assertRaises(TypeError, math.ceil, t, 0)
 
+        self.assertEqual(math.ceil(FloatLike(+1.0)), +1.0)
+        self.assertEqual(math.ceil(FloatLike(-1.0)), -1.0)
+
     @requires_IEEE_754
     def testCopysign(self):
         self.assertEqual(math.copysign(1, 42), 1.0)
@@ -567,16 +578,22 @@ def __floor__(self):
                 return 42
         class TestNoFloor:
             pass
+        class TestBadFloor:
+            __floor__ = BadDescr()
         self.assertEqual(math.floor(TestFloor()), 42)
         self.assertEqual(math.floor(FloatFloor()), 42)
         self.assertEqual(math.floor(FloatLike(41.9)), 41)
         self.assertRaises(TypeError, math.floor, TestNoFloor())
+        self.assertRaises(ValueError, math.floor, TestBadFloor())
 
         t = TestNoFloor()
         t.__floor__ = lambda *args: args
         self.assertRaises(TypeError, math.floor, t)
         self.assertRaises(TypeError, math.floor, t, 0)
 
+        self.assertEqual(math.floor(FloatLike(+1.0)), +1.0)
+        self.assertEqual(math.floor(FloatLike(-1.0)), -1.0)
+
     def testFmod(self):
         self.assertRaises(TypeError, math.fmod)
         self.ftest('fmod(10, 1)', math.fmod(10, 1), 0.0)
@@ -598,6 +615,7 @@ def testFmod(self):
         self.assertEqual(math.fmod(-3.0, NINF), -3.0)
         self.assertEqual(math.fmod(0.0, 3.0), 0.0)
         self.assertEqual(math.fmod(0.0, NINF), 0.0)
+        self.assertRaises(ValueError, math.fmod, INF, INF)
 
     def testFrexp(self):
         self.assertRaises(TypeError, math.frexp)
@@ -667,6 +685,7 @@ def msum(iterable):
             ([], 0.0),
             ([0.0], 0.0),
             ([1e100, 1.0, -1e100, 1e-100, 1e50, -1.0, -1e50], 1e-100),
+            ([1e100, 1.0, -1e100, 1e-100, 1e50, -1, -1e50], 1e-100),
             ([2.0**53, -0.5, -2.0**-54], 2.0**53-1.0),
             ([2.0**53, 1.0, 2.0**-100], 2.0**53+2.0),
             ([2.0**53+10.0, 1.0, 2.0**-100], 2.0**53+12.0),
@@ -714,6 +733,22 @@ def msum(iterable):
             s = msum(vals)
             self.assertEqual(msum(vals), math.fsum(vals))
 
+        self.assertEqual(math.fsum([1.0, math.inf]), math.inf)
+        self.assertTrue(math.isnan(math.fsum([math.nan, 1.0])))
+        self.assertEqual(math.fsum([1e100, FloatLike(1.0), -1e100, 1e-100,
+                                    1e50, FloatLike(-1.0), -1e50]), 1e-100)
+        self.assertRaises(OverflowError, math.fsum, [1e+308, 1e+308])
+        self.assertRaises(ValueError, math.fsum, [math.inf, -math.inf])
+        self.assertRaises(TypeError, math.fsum, ['spam'])
+        self.assertRaises(TypeError, math.fsum, 1)
+        self.assertRaises(OverflowError, math.fsum, [10**1000])
+
+        def bad_iter():
+            yield 1.0
+            raise ZeroDivisionError
+
+        self.assertRaises(ZeroDivisionError, math.fsum, bad_iter())
+
     def testGcd(self):
         gcd = math.gcd
         self.assertEqual(gcd(0, 0), 0)
@@ -774,6 +809,8 @@ def testHypot(self):
         # Test allowable types (those with __float__)
         self.assertEqual(hypot(12.0, 5.0), 13.0)
         self.assertEqual(hypot(12, 5), 13)
+        self.assertEqual(hypot(1, -1), math.sqrt(2))
+        self.assertEqual(hypot(1, FloatLike(-1.)), math.sqrt(2))
         self.assertEqual(hypot(Decimal(12), Decimal(5)), 13)
         self.assertEqual(hypot(Fraction(12, 32), Fraction(5, 32)), Fraction(13, 32))
         self.assertEqual(hypot(bool(1), bool(0), bool(1), bool(1)), math.sqrt(3))
@@ -831,6 +868,8 @@ def testHypot(self):
             scale = FLOAT_MIN / 2.0 ** exp
             self.assertEqual(math.hypot(4*scale, 3*scale), 5*scale)
 
+        self.assertRaises(TypeError, math.hypot, *([1.0]*18), 'spam')
+
     @requires_IEEE_754
     @unittest.skipIf(HAVE_DOUBLE_ROUNDING,
                      "hypot() loses accuracy on machines with double rounding")
@@ -923,6 +962,10 @@ def testDist(self):
         # Test allowable types (those with __float__)
         self.assertEqual(dist((14.0, 1.0), (2.0, -4.0)), 13.0)
         self.assertEqual(dist((14, 1), (2, -4)), 13)
+        self.assertEqual(dist((FloatLike(14.), 1), (2, -4)), 13)
+        self.assertEqual(dist((11, 1), (FloatLike(-1.), -4)), 13)
+        self.assertEqual(dist((14, FloatLike(-1.)), (2, -6)), 13)
+        self.assertEqual(dist((14, -1), (2, -6)), 13)
         self.assertEqual(dist((D(14), D(1)), (D(2), D(-4))), D(13))
         self.assertEqual(dist((F(14, 32), F(1, 32)), (F(2, 32), F(-4, 32))),
                          F(13, 32))
@@ -966,6 +1009,8 @@ class T(tuple):
             dist((1, 2, 3, 4), (5, 6, 7))
         with self.assertRaises(ValueError):        # Check dimension agree
             dist((1, 2, 3), (4, 5, 6, 7))
+        with self.assertRaises(TypeError):
+            dist((1,)*17 + ("spam",), (1,)*18)
         with self.assertRaises(TypeError):         # Rejects invalid types
             dist("abc", "xyz")
         int_too_big_for_float = 10 ** (sys.float_info.max_10_exp + 5)
@@ -973,6 +1018,16 @@ class T(tuple):
             dist((1, int_too_big_for_float), (2, 3))
         with self.assertRaises((ValueError, OverflowError)):
             dist((2, 3), (1, int_too_big_for_float))
+        with self.assertRaises(TypeError):
+            dist((1,), 2)
+        with self.assertRaises(TypeError):
+            dist([1], 2)
+
+        class BadFloat:
+            __float__ = BadDescr()
+
+        with self.assertRaises(ValueError):
+            dist([1], [BadFloat()])
 
         # Verify that the one dimensional case is equivalent to abs()
         for i in range(20):
@@ -1111,6 +1166,7 @@ def test_lcm(self):
 
     def testLdexp(self):
         self.assertRaises(TypeError, math.ldexp)
+        self.assertRaises(TypeError, math.ldexp, 2.0, 1.1)
         self.ftest('ldexp(0,1)', math.ldexp(0,1), 0)
         self.ftest('ldexp(1,1)', math.ldexp(1,1), 2)
         self.ftest('ldexp(1,-1)', math.ldexp(1,-1), 0.5)
@@ -1143,6 +1199,7 @@ def testLdexp(self):
 
     def testLog(self):
         self.assertRaises(TypeError, math.log)
+        self.assertRaises(TypeError, math.log, 1, 2, 3)
         self.ftest('log(1/e)', math.log(1/math.e), -1)
         self.ftest('log(1)', math.log(1), 0)
         self.ftest('log(e)', math.log(math.e), 1)
@@ -1153,6 +1210,7 @@ def testLog(self):
                    2302.5850929940457)
         self.assertRaises(ValueError, math.log, -1.5)
         self.assertRaises(ValueError, math.log, -10**1000)
+        self.assertRaises(ValueError, math.log, 10, -10)
         self.assertRaises(ValueError, math.log, NINF)
         self.assertEqual(math.log(INF), INF)
         self.assertTrue(math.isnan(math.log(NAN)))
@@ -1212,6 +1270,8 @@ def testSumProd(self):
         self.assertEqual(sumprod(iter([10, 20, 30]), (1, 2, 3)), 140)
         self.assertEqual(sumprod([1.5, 2.5], [3.5, 4.5]), 16.5)
         self.assertEqual(sumprod([], []), 0)
+        self.assertEqual(sumprod([-1], [1.]), -1)
+        self.assertEqual(sumprod([1.], [-1]), -1)
 
         # Type preservation and coercion
         for v in [
@@ -1237,11 +1297,20 @@ def testSumProd(self):
         self.assertRaises(TypeError, sumprod, [], [], [])   # Three args
         self.assertRaises(TypeError, sumprod, None, [10])   # Non-iterable
         self.assertRaises(TypeError, sumprod, [10], None)   # Non-iterable
+        self.assertRaises(TypeError, sumprod, ['x'], [1.0])
 
         # Uneven lengths
         self.assertRaises(ValueError, sumprod, [10, 20], [30])
         self.assertRaises(ValueError, sumprod, [10], [20, 30])
 
+        # Overflows
+        self.assertEqual(sumprod([10**20], [1]), 10**20)
+        self.assertEqual(sumprod([1], [10**20]), 10**20)
+        self.assertEqual(sumprod([10**10], [10**10]), 10**20)
+        self.assertEqual(sumprod([10**7]*10**5, [10**7]*10**5), 10**19)
+        self.assertRaises(OverflowError, sumprod, [10**1000], [1.0])
+        self.assertRaises(OverflowError, sumprod, [1.0], [10**1000])
+
         # Error in iterator
         def raise_after(n):
             for i in range(n):
@@ -1252,6 +1321,11 @@ def raise_after(n):
         with self.assertRaises(RuntimeError):
             sumprod(raise_after(5), range(10))
 
+        from test.test_iter import BasicIterClass
+
+        self.assertEqual(sumprod(BasicIterClass(1), [1]), 0)
+        self.assertEqual(sumprod([1], BasicIterClass(1)), 0)
+
         # Error in multiplication
         class BadMultiply:
             def __mul__(self, other):
@@ -1292,6 +1366,7 @@ def test_sumprod_accuracy(self):
         sumprod = math.sumprod
         self.assertEqual(sumprod([0.1] * 10, [1]*10), 1.0)
         self.assertEqual(sumprod([0.1] * 20, [True, False] * 10), 1.0)
+        self.assertEqual(sumprod([True, False] * 10, [0.1] * 20), 1.0)
         self.assertEqual(sumprod([1.0, 10E100, 1.0, -10E100], [1.0]*4), 2.0)
 
     @support.requires_resource('cpu')
@@ -1490,6 +1565,7 @@ def testPow(self):
         self.assertTrue(math.isnan(math.pow(2, NAN)))
         self.assertTrue(math.isnan(math.pow(0, NAN)))
         self.assertEqual(math.pow(1, NAN), 1)
+        self.assertRaises(OverflowError, math.pow, 1e+100, 1e+100)
 
         # pow(0., x)
         self.assertEqual(math.pow(0., INF), 0.)
@@ -1846,6 +1922,8 @@ def __trunc__(self):
                 return 23
         class TestNoTrunc:
             pass
+        class TestBadTrunc:
+            __trunc__ = BadDescr()
 
         self.assertEqual(math.trunc(TestTrunc()), 23)
         self.assertEqual(math.trunc(FloatTrunc()), 23)
@@ -1854,6 +1932,7 @@ class TestNoTrunc:
         self.assertRaises(TypeError, math.trunc, 1, 2)
         self.assertRaises(TypeError, math.trunc, FloatLike(23.5))
         self.assertRaises(TypeError, math.trunc, TestNoTrunc())
+        self.assertRaises(ValueError, math.trunc, TestBadTrunc())
 
     def testIsfinite(self):
         self.assertTrue(math.isfinite(0.0))
@@ -2054,6 +2133,8 @@ def test_mtestfile(self):
                       '\n  '.join(failures))
 
     def test_prod(self):
+        from fractions import Fraction as F
+
         prod = math.prod
         self.assertEqual(prod([]), 1)
         self.assertEqual(prod([], start=5), 5)
@@ -2065,6 +2146,14 @@ def test_prod(self):
         self.assertEqual(prod([1.0, 2.0, 3.0, 4.0, 5.0]), 120.0)
         self.assertEqual(prod([1, 2, 3, 4.0, 5.0]), 120.0)
         self.assertEqual(prod([1.0, 2.0, 3.0, 4, 5]), 120.0)
+        self.assertEqual(prod([1., F(3, 2)]), 1.5)
+
+        # Error in multiplication
+        class BadMultiply:
+            def __rmul__(self, other):
+                raise RuntimeError
+        with self.assertRaises(RuntimeError):
+            prod([10., BadMultiply()])
 
         # Test overflow in fast-path for integers
         self.assertEqual(prod([1, 1, 2**32, 1, 1]), 2**32)
@@ -2296,11 +2385,20 @@ def test_nextafter(self):
                          float.fromhex('0x1.fffffffffffffp-1'))
         self.assertEqual(math.nextafter(1.0, INF),
                          float.fromhex('0x1.0000000000001p+0'))
+        self.assertEqual(math.nextafter(1.0, -INF, steps=1),
+                         float.fromhex('0x1.fffffffffffffp-1'))
+        self.assertEqual(math.nextafter(1.0, INF, steps=1),
+                         float.fromhex('0x1.0000000000001p+0'))
+        self.assertEqual(math.nextafter(1.0, -INF, steps=3),
+                         float.fromhex('0x1.ffffffffffffdp-1'))
+        self.assertEqual(math.nextafter(1.0, INF, steps=3),
+                         float.fromhex('0x1.0000000000003p+0'))
 
         # x == y: y is returned
-        self.assertEqual(math.nextafter(2.0, 2.0), 2.0)
-        self.assertEqualSign(math.nextafter(-0.0, +0.0), +0.0)
-        self.assertEqualSign(math.nextafter(+0.0, -0.0), -0.0)
+        for steps in range(1, 5):
+            self.assertEqual(math.nextafter(2.0, 2.0, steps=steps), 2.0)
+            self.assertEqualSign(math.nextafter(-0.0, +0.0, steps=steps), +0.0)
+            self.assertEqualSign(math.nextafter(+0.0, -0.0, steps=steps), -0.0)
 
         # around 0.0
         smallest_subnormal = sys.float_info.min * sys.float_info.epsilon
@@ -2325,6 +2423,11 @@ def test_nextafter(self):
         self.assertIsNaN(math.nextafter(1.0, NAN))
         self.assertIsNaN(math.nextafter(NAN, NAN))
 
+        self.assertEqual(1.0, math.nextafter(1.0, INF, steps=0))
+        with self.assertRaises(ValueError):
+            math.nextafter(1.0, INF, steps=-1)
+
+
     @requires_IEEE_754
     def test_ulp(self):
         self.assertEqual(math.ulp(1.0), sys.float_info.epsilon)
@@ -2364,6 +2467,14 @@ def __float__(self):
             # argument to a float.
             self.assertFalse(getattr(y, "converted", False))
 
+    def test_input_exceptions(self):
+        self.assertRaises(TypeError, math.exp, "spam")
+        self.assertRaises(TypeError, math.erf, "spam")
+        self.assertRaises(TypeError, math.atan2, "spam", 1.0)
+        self.assertRaises(TypeError, math.atan2, 1.0, "spam")
+        self.assertRaises(TypeError, math.atan2, 1.0)
+        self.assertRaises(TypeError, math.atan2, 1.0, 2.0, 3.0)
+
     # Custom assertions.
 
     def assertIsNaN(self, value):
@@ -2504,7 +2615,7 @@ def test_fractions(self):
 
 def load_tests(loader, tests, pattern):
     from doctest import DocFileSuite
-    tests.addTest(DocFileSuite("ieee754.txt"))
+    tests.addTest(DocFileSuite(os.path.join("mathdata", "ieee754.txt")))
     return tests
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_math_property.py b/Lib/test/test_math_property.py
new file mode 100644
index 00000000000000..7d51aa17b4cc27
--- /dev/null
+++ b/Lib/test/test_math_property.py
@@ -0,0 +1,41 @@
+import functools
+import unittest
+from math import isnan, nextafter
+from test.support import requires_IEEE_754
+from test.support.hypothesis_helper import hypothesis
+
+floats = hypothesis.strategies.floats
+integers = hypothesis.strategies.integers
+
+
+def assert_equal_float(x, y):
+    assert isnan(x) and isnan(y) or x == y
+
+
+def via_reduce(x, y, steps):
+    return functools.reduce(nextafter, [y] * steps, x)
+
+
+class NextafterTests(unittest.TestCase):
+    @requires_IEEE_754
+    @hypothesis.given(
+        x=floats(),
+        y=floats(),
+        steps=integers(min_value=0, max_value=2**16))
+    def test_count(self, x, y, steps):
+        assert_equal_float(via_reduce(x, y, steps),
+                           nextafter(x, y, steps=steps))
+
+    @requires_IEEE_754
+    @hypothesis.given(
+        x=floats(),
+        y=floats(),
+        a=integers(min_value=0),
+        b=integers(min_value=0))
+    def test_addition_commutes(self, x, y, a, b):
+        first = nextafter(x, y, steps=a)
+        second = nextafter(first, y, steps=b)
+        combined = nextafter(x, y, steps=a+b)
+        hypothesis.note(f"{first} -> {second} == {combined}")
+
+        assert_equal_float(second, combined)
diff --git a/Lib/test/test_memoryio.py b/Lib/test/test_memoryio.py
index cd2faba1791c77..731299294e6877 100644
--- a/Lib/test/test_memoryio.py
+++ b/Lib/test/test_memoryio.py
@@ -463,6 +463,20 @@ def test_getbuffer(self):
         memio.close()
         self.assertRaises(ValueError, memio.getbuffer)
 
+    def test_getbuffer_empty(self):
+        memio = self.ioclass()
+        buf = memio.getbuffer()
+        self.assertEqual(bytes(buf), b"")
+        # Trying to change the size of the BytesIO while a buffer is exported
+        # raises a BufferError.
+        self.assertRaises(BufferError, memio.write, b'x')
+        buf2 = memio.getbuffer()
+        self.assertRaises(BufferError, memio.write, b'x')
+        buf.release()
+        self.assertRaises(BufferError, memio.write, b'x')
+        buf2.release()
+        memio.write(b'x')
+
     def test_read1(self):
         buf = self.buftype("1234567890")
         self.assertEqual(self.ioclass(buf).read1(), buf)
diff --git a/Lib/test/test_minidom.py b/Lib/test/test_minidom.py
index 699265ccadc7f9..3ecd1af31eea77 100644
--- a/Lib/test/test_minidom.py
+++ b/Lib/test/test_minidom.py
@@ -505,6 +505,46 @@ def testWriteXML(self):
         dom.unlink()
         self.confirm(str == domstr)
 
+    def test_toxml_quote_text(self):
+        dom = Document()
+        elem = dom.appendChild(dom.createElement('elem'))
+        elem.appendChild(dom.createTextNode('&<>"'))
+        cr = elem.appendChild(dom.createElement('cr'))
+        cr.appendChild(dom.createTextNode('\r'))
+        crlf = elem.appendChild(dom.createElement('crlf'))
+        crlf.appendChild(dom.createTextNode('\r\n'))
+        lflf = elem.appendChild(dom.createElement('lflf'))
+        lflf.appendChild(dom.createTextNode('\n\n'))
+        ws = elem.appendChild(dom.createElement('ws'))
+        ws.appendChild(dom.createTextNode('\t\n\r '))
+        domstr = dom.toxml()
+        dom.unlink()
+        self.assertEqual(domstr, '<?xml version="1.0" ?>'
+                '<elem>&amp;&lt;&gt;"'
+                '<cr>\r</cr>'
+                '<crlf>\r\n</crlf>'
+                '<lflf>\n\n</lflf>'
+                '<ws>\t\n\r </ws></elem>')
+
+    def test_toxml_quote_attrib(self):
+        dom = Document()
+        elem = dom.appendChild(dom.createElement('elem'))
+        elem.setAttribute("a", '&<>"')
+        elem.setAttribute("cr", "\r")
+        elem.setAttribute("lf", "\n")
+        elem.setAttribute("crlf", "\r\n")
+        elem.setAttribute("lflf", "\n\n")
+        elem.setAttribute("ws", "\t\n\r ")
+        domstr = dom.toxml()
+        dom.unlink()
+        self.assertEqual(domstr, '<?xml version="1.0" ?>'
+                '<elem a="&amp;&lt;&gt;&quot;" '
+                'cr="&#13;" '
+                'lf="&#10;" '
+                'crlf="&#13;&#10;" '
+                'lflf="&#10;&#10;" '
+                'ws="&#9;&#10;&#13; "/>')
+
     def testAltNewline(self):
         str = '<?xml version="1.0" ?>\n<a b="c"/>\n'
         dom = parseString(str)
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index 213a44d56f37b3..866ede5b83dff0 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -93,11 +93,12 @@ def test_basic(self):
             self.assertEqual(end, PAGESIZE + 6)
 
         # test seeking around (try to overflow the seek implementation)
-        m.seek(0,0)
+        self.assertTrue(m.seekable())
+        self.assertEqual(m.seek(0, 0), 0)
         self.assertEqual(m.tell(), 0)
-        m.seek(42,1)
+        self.assertEqual(m.seek(42, 1), 42)
         self.assertEqual(m.tell(), 42)
-        m.seek(0,2)
+        self.assertEqual(m.seek(0, 2), len(m))
         self.assertEqual(m.tell(), len(m))
 
         # Try to seek to negative position...
@@ -162,7 +163,7 @@ def test_access_parameter(self):
 
             # Ensuring that readonly mmap can't be write() to
             try:
-                m.seek(0,0)
+                m.seek(0, 0)
                 m.write(b'abc')
             except TypeError:
                 pass
@@ -171,7 +172,7 @@ def test_access_parameter(self):
 
             # Ensuring that readonly mmap can't be write_byte() to
             try:
-                m.seek(0,0)
+                m.seek(0, 0)
                 m.write_byte(b'd')
             except TypeError:
                 pass
@@ -255,10 +256,15 @@ def test_access_parameter(self):
             # Try writing with PROT_EXEC and without PROT_WRITE
             prot = mmap.PROT_READ | getattr(mmap, 'PROT_EXEC', 0)
             with open(TESTFN, "r+b") as f:
-                m = mmap.mmap(f.fileno(), mapsize, prot=prot)
-                self.assertRaises(TypeError, m.write, b"abcdef")
-                self.assertRaises(TypeError, m.write_byte, 0)
-                m.close()
+                try:
+                    m = mmap.mmap(f.fileno(), mapsize, prot=prot)
+                except PermissionError:
+                    # on macOS 14, PROT_READ | PROT_EXEC is not allowed
+                    pass
+                else:
+                    self.assertRaises(TypeError, m.write, b"abcdef")
+                    self.assertRaises(TypeError, m.write_byte, 0)
+                    m.close()
 
     def test_bad_file_desc(self):
         # Try opening a bad file descriptor...
@@ -299,6 +305,27 @@ def test_find_end(self):
         self.assertEqual(m.find(b'one', 1, -2), -1)
         self.assertEqual(m.find(bytearray(b'one')), 0)
 
+        for i in range(-n-1, n+1):
+            for j in range(-n-1, n+1):
+                for p in [b"o", b"on", b"two", b"ones", b"s"]:
+                    expected = data.find(p, i, j)
+                    self.assertEqual(m.find(p, i, j), expected, (p, i, j))
+
+    def test_find_does_not_access_beyond_buffer(self):
+        try:
+            flags = mmap.MAP_PRIVATE | mmap.MAP_ANONYMOUS
+            PAGESIZE = mmap.PAGESIZE
+            PROT_NONE = 0
+            PROT_READ = mmap.PROT_READ
+        except AttributeError as e:
+            raise unittest.SkipTest("mmap flags unavailable") from e
+        for i in range(0, 2049):
+            with mmap.mmap(-1, PAGESIZE * (i + 1),
+                           flags=flags, prot=PROT_NONE) as guard:
+                with mmap.mmap(-1, PAGESIZE * (i + 2048),
+                               flags=flags, prot=PROT_READ) as fm:
+                    fm.find(b"fo", -2)
+
 
     def test_rfind(self):
         # test the new 'end' parameter works as expected
@@ -407,7 +434,6 @@ def test_move(self):
         m.move(0, 0, 1)
         m.move(0, 0, 0)
 
-
     def test_anonymous(self):
         # anonymous mmap.mmap(-1, PAGE)
         m = mmap.mmap(-1, PAGESIZE)
@@ -887,6 +913,92 @@ def test_resize_succeeds_with_error_for_second_named_mapping(self):
         self.assertEqual(m1[:data_length], data)
         self.assertEqual(m2[:data_length], data)
 
+    def test_mmap_closed_by_int_scenarios(self):
+        """
+        gh-103987: Test that mmap objects raise ValueError
+                for closed mmap files
+        """
+
+        class MmapClosedByIntContext:
+            def __init__(self, access) -> None:
+                self.access = access
+
+            def __enter__(self):
+                self.f = open(TESTFN, "w+b")
+                self.f.write(random.randbytes(100))
+                self.f.flush()
+
+                m = mmap.mmap(self.f.fileno(), 100, access=self.access)
+
+                class X:
+                    def __index__(self):
+                        m.close()
+                        return 10
+
+                return (m, X)
+
+            def __exit__(self, exc_type, exc_value, traceback):
+                self.f.close()
+
+        read_access_modes = [
+            mmap.ACCESS_READ,
+            mmap.ACCESS_WRITE,
+            mmap.ACCESS_COPY,
+            mmap.ACCESS_DEFAULT,
+        ]
+
+        write_access_modes = [
+            mmap.ACCESS_WRITE,
+            mmap.ACCESS_COPY,
+            mmap.ACCESS_DEFAULT,
+        ]
+
+        for access in read_access_modes:
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[X()]
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[X() : 20]
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[X() : 20 : 2]
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[20 : X() : -2]
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m.read(X())
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m.find(b"1", 1, X())
+
+        for access in write_access_modes:
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[X() : 20] = b"1" * 10
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[X() : 20 : 2] = b"1" * 5
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m[20 : X() : -2] = b"1" * 5
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m.move(1, 2, X())
+
+            with MmapClosedByIntContext(access) as (m, X):
+                with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
+                    m.write_byte(X())
+
 class LargeMmapTests(unittest.TestCase):
 
     def setUp(self):
diff --git a/Lib/test/test_module.py b/Lib/test/test_module.py
deleted file mode 100644
index c7eb92290e1b6d..00000000000000
--- a/Lib/test/test_module.py
+++ /dev/null
@@ -1,368 +0,0 @@
-# Test the module type
-import unittest
-import weakref
-from test.support import gc_collect
-from test.support import import_helper
-from test.support.script_helper import assert_python_ok
-
-import sys
-ModuleType = type(sys)
-
-
-class FullLoader:
-    pass
-
-
-class BareLoader:
-    pass
-
-
-class ModuleTests(unittest.TestCase):
-    def test_uninitialized(self):
-        # An uninitialized module has no __dict__ or __name__,
-        # and __doc__ is None
-        foo = ModuleType.__new__(ModuleType)
-        self.assertTrue(isinstance(foo.__dict__, dict))
-        self.assertEqual(dir(foo), [])
-        try:
-            s = foo.__name__
-            self.fail("__name__ = %s" % repr(s))
-        except AttributeError:
-            pass
-        self.assertEqual(foo.__doc__, ModuleType.__doc__)
-
-    def test_uninitialized_missing_getattr(self):
-        # Issue 8297
-        # test the text in the AttributeError of an uninitialized module
-        foo = ModuleType.__new__(ModuleType)
-        self.assertRaisesRegex(
-                AttributeError, "module has no attribute 'not_here'",
-                getattr, foo, "not_here")
-
-    def test_missing_getattr(self):
-        # Issue 8297
-        # test the text in the AttributeError
-        foo = ModuleType("foo")
-        self.assertRaisesRegex(
-                AttributeError, "module 'foo' has no attribute 'not_here'",
-                getattr, foo, "not_here")
-
-    def test_no_docstring(self):
-        # Regularly initialized module, no docstring
-        foo = ModuleType("foo")
-        self.assertEqual(foo.__name__, "foo")
-        self.assertEqual(foo.__doc__, None)
-        self.assertIs(foo.__loader__, None)
-        self.assertIs(foo.__package__, None)
-        self.assertIs(foo.__spec__, None)
-        self.assertEqual(foo.__dict__, {"__name__": "foo", "__doc__": None,
-                                        "__loader__": None, "__package__": None,
-                                        "__spec__": None})
-
-    def test_ascii_docstring(self):
-        # ASCII docstring
-        foo = ModuleType("foo", "foodoc")
-        self.assertEqual(foo.__name__, "foo")
-        self.assertEqual(foo.__doc__, "foodoc")
-        self.assertEqual(foo.__dict__,
-                         {"__name__": "foo", "__doc__": "foodoc",
-                          "__loader__": None, "__package__": None,
-                          "__spec__": None})
-
-    def test_unicode_docstring(self):
-        # Unicode docstring
-        foo = ModuleType("foo", "foodoc\u1234")
-        self.assertEqual(foo.__name__, "foo")
-        self.assertEqual(foo.__doc__, "foodoc\u1234")
-        self.assertEqual(foo.__dict__,
-                         {"__name__": "foo", "__doc__": "foodoc\u1234",
-                          "__loader__": None, "__package__": None,
-                          "__spec__": None})
-
-    def test_reinit(self):
-        # Reinitialization should not replace the __dict__
-        foo = ModuleType("foo", "foodoc\u1234")
-        foo.bar = 42
-        d = foo.__dict__
-        foo.__init__("foo", "foodoc")
-        self.assertEqual(foo.__name__, "foo")
-        self.assertEqual(foo.__doc__, "foodoc")
-        self.assertEqual(foo.bar, 42)
-        self.assertEqual(foo.__dict__,
-              {"__name__": "foo", "__doc__": "foodoc", "bar": 42,
-               "__loader__": None, "__package__": None, "__spec__": None})
-        self.assertTrue(foo.__dict__ is d)
-
-    def test_dont_clear_dict(self):
-        # See issue 7140.
-        def f():
-            foo = ModuleType("foo")
-            foo.bar = 4
-            return foo
-        gc_collect()
-        self.assertEqual(f().__dict__["bar"], 4)
-
-    def test_clear_dict_in_ref_cycle(self):
-        destroyed = []
-        m = ModuleType("foo")
-        m.destroyed = destroyed
-        s = """class A:
-    def __init__(self, l):
-        self.l = l
-    def __del__(self):
-        self.l.append(1)
-a = A(destroyed)"""
-        exec(s, m.__dict__)
-        del m
-        gc_collect()
-        self.assertEqual(destroyed, [1])
-
-    def test_weakref(self):
-        m = ModuleType("foo")
-        wr = weakref.ref(m)
-        self.assertIs(wr(), m)
-        del m
-        gc_collect()
-        self.assertIs(wr(), None)
-
-    def test_module_getattr(self):
-        import test.good_getattr as gga
-        from test.good_getattr import test
-        self.assertEqual(test, "There is test")
-        self.assertEqual(gga.x, 1)
-        self.assertEqual(gga.y, 2)
-        with self.assertRaisesRegex(AttributeError,
-                                    "Deprecated, use whatever instead"):
-            gga.yolo
-        self.assertEqual(gga.whatever, "There is whatever")
-        del sys.modules['test.good_getattr']
-
-    def test_module_getattr_errors(self):
-        import test.bad_getattr as bga
-        from test import bad_getattr2
-        self.assertEqual(bga.x, 1)
-        self.assertEqual(bad_getattr2.x, 1)
-        with self.assertRaises(TypeError):
-            bga.nope
-        with self.assertRaises(TypeError):
-            bad_getattr2.nope
-        del sys.modules['test.bad_getattr']
-        if 'test.bad_getattr2' in sys.modules:
-            del sys.modules['test.bad_getattr2']
-
-    def test_module_dir(self):
-        import test.good_getattr as gga
-        self.assertEqual(dir(gga), ['a', 'b', 'c'])
-        del sys.modules['test.good_getattr']
-
-    def test_module_dir_errors(self):
-        import test.bad_getattr as bga
-        from test import bad_getattr2
-        with self.assertRaises(TypeError):
-            dir(bga)
-        with self.assertRaises(TypeError):
-            dir(bad_getattr2)
-        del sys.modules['test.bad_getattr']
-        if 'test.bad_getattr2' in sys.modules:
-            del sys.modules['test.bad_getattr2']
-
-    def test_module_getattr_tricky(self):
-        from test import bad_getattr3
-        # these lookups should not crash
-        with self.assertRaises(AttributeError):
-            bad_getattr3.one
-        with self.assertRaises(AttributeError):
-            bad_getattr3.delgetattr
-        if 'test.bad_getattr3' in sys.modules:
-            del sys.modules['test.bad_getattr3']
-
-    def test_module_repr_minimal(self):
-        # reprs when modules have no __file__, __name__, or __loader__
-        m = ModuleType('foo')
-        del m.__name__
-        self.assertEqual(repr(m), "<module '?'>")
-
-    def test_module_repr_with_name(self):
-        m = ModuleType('foo')
-        self.assertEqual(repr(m), "<module 'foo'>")
-
-    def test_module_repr_with_name_and_filename(self):
-        m = ModuleType('foo')
-        m.__file__ = '/tmp/foo.py'
-        self.assertEqual(repr(m), "<module 'foo' from '/tmp/foo.py'>")
-
-    def test_module_repr_with_filename_only(self):
-        m = ModuleType('foo')
-        del m.__name__
-        m.__file__ = '/tmp/foo.py'
-        self.assertEqual(repr(m), "<module '?' from '/tmp/foo.py'>")
-
-    def test_module_repr_with_loader_as_None(self):
-        m = ModuleType('foo')
-        assert m.__loader__ is None
-        self.assertEqual(repr(m), "<module 'foo'>")
-
-    def test_module_repr_with_bare_loader_but_no_name(self):
-        m = ModuleType('foo')
-        del m.__name__
-        # Yes, a class not an instance.
-        m.__loader__ = BareLoader
-        loader_repr = repr(BareLoader)
-        self.assertEqual(
-            repr(m), "<module '?' ({})>".format(loader_repr))
-
-    def test_module_repr_with_full_loader_but_no_name(self):
-        # m.__loader__.module_repr() will fail because the module has no
-        # m.__name__.  This exception will get suppressed and instead the
-        # loader's repr will be used.
-        m = ModuleType('foo')
-        del m.__name__
-        # Yes, a class not an instance.
-        m.__loader__ = FullLoader
-        loader_repr = repr(FullLoader)
-        self.assertEqual(
-            repr(m), "<module '?' ({})>".format(loader_repr))
-
-    def test_module_repr_with_bare_loader(self):
-        m = ModuleType('foo')
-        # Yes, a class not an instance.
-        m.__loader__ = BareLoader
-        module_repr = repr(BareLoader)
-        self.assertEqual(
-            repr(m), "<module 'foo' ({})>".format(module_repr))
-
-    def test_module_repr_with_full_loader(self):
-        m = ModuleType('foo')
-        # Yes, a class not an instance.
-        m.__loader__ = FullLoader
-        self.assertEqual(
-            repr(m), f"<module 'foo' (<class '{__name__}.FullLoader'>)>")
-
-    def test_module_repr_with_bare_loader_and_filename(self):
-        m = ModuleType('foo')
-        # Yes, a class not an instance.
-        m.__loader__ = BareLoader
-        m.__file__ = '/tmp/foo.py'
-        self.assertEqual(repr(m), "<module 'foo' from '/tmp/foo.py'>")
-
-    def test_module_repr_with_full_loader_and_filename(self):
-        m = ModuleType('foo')
-        # Yes, a class not an instance.
-        m.__loader__ = FullLoader
-        m.__file__ = '/tmp/foo.py'
-        self.assertEqual(repr(m), "<module 'foo' from '/tmp/foo.py'>")
-
-    def test_module_repr_builtin(self):
-        self.assertEqual(repr(sys), "<module 'sys' (built-in)>")
-
-    def test_module_repr_source(self):
-        r = repr(unittest)
-        starts_with = "<module 'unittest' from '"
-        ends_with = "__init__.py'>"
-        self.assertEqual(r[:len(starts_with)], starts_with,
-                         '{!r} does not start with {!r}'.format(r, starts_with))
-        self.assertEqual(r[-len(ends_with):], ends_with,
-                         '{!r} does not end with {!r}'.format(r, ends_with))
-
-    def test_module_finalization_at_shutdown(self):
-        # Module globals and builtins should still be available during shutdown
-        rc, out, err = assert_python_ok("-c", "from test import final_a")
-        self.assertFalse(err)
-        lines = out.splitlines()
-        self.assertEqual(set(lines), {
-            b"x = a",
-            b"x = b",
-            b"final_a.x = a",
-            b"final_b.x = b",
-            b"len = len",
-            b"shutil.rmtree = rmtree"})
-
-    def test_descriptor_errors_propagate(self):
-        class Descr:
-            def __get__(self, o, t):
-                raise RuntimeError
-        class M(ModuleType):
-            melon = Descr()
-        self.assertRaises(RuntimeError, getattr, M("mymod"), "melon")
-
-    def test_lazy_create_annotations(self):
-        # module objects lazy create their __annotations__ dict on demand.
-        # the annotations dict is stored in module.__dict__.
-        # a freshly created module shouldn't have an annotations dict yet.
-        foo = ModuleType("foo")
-        for i in range(4):
-            self.assertFalse("__annotations__" in foo.__dict__)
-            d = foo.__annotations__
-            self.assertTrue("__annotations__" in foo.__dict__)
-            self.assertEqual(foo.__annotations__, d)
-            self.assertEqual(foo.__dict__['__annotations__'], d)
-            if i % 2:
-                del foo.__annotations__
-            else:
-                del foo.__dict__['__annotations__']
-
-    def test_setting_annotations(self):
-        foo = ModuleType("foo")
-        for i in range(4):
-            self.assertFalse("__annotations__" in foo.__dict__)
-            d = {'a': int}
-            foo.__annotations__ = d
-            self.assertTrue("__annotations__" in foo.__dict__)
-            self.assertEqual(foo.__annotations__, d)
-            self.assertEqual(foo.__dict__['__annotations__'], d)
-            if i % 2:
-                del foo.__annotations__
-            else:
-                del foo.__dict__['__annotations__']
-
-    def test_annotations_getset_raises(self):
-        # double delete
-        foo = ModuleType("foo")
-        foo.__annotations__ = {}
-        del foo.__annotations__
-        with self.assertRaises(AttributeError):
-            del foo.__annotations__
-
-    def test_annotations_are_created_correctly(self):
-        ann_module4 = import_helper.import_fresh_module('test.ann_module4')
-        self.assertTrue("__annotations__" in ann_module4.__dict__)
-        del ann_module4.__annotations__
-        self.assertFalse("__annotations__" in ann_module4.__dict__)
-
-
-    def test_repeated_attribute_pops(self):
-        # Repeated accesses to module attribute will be specialized
-        # Check that popping the attribute doesn't break it
-        m = ModuleType("test")
-        d = m.__dict__
-        count = 0
-        for _ in range(100):
-            m.attr = 1
-            count += m.attr # Might be specialized
-            d.pop("attr")
-        self.assertEqual(count, 100)
-
-    # frozen and namespace module reprs are tested in importlib.
-
-    def test_subclass_with_slots(self):
-        # In 3.11alpha this crashed, as the slots weren't NULLed.
-
-        class ModuleWithSlots(ModuleType):
-            __slots__ = ("a", "b")
-
-            def __init__(self, name):
-                super().__init__(name)
-
-        m = ModuleWithSlots("name")
-        with self.assertRaises(AttributeError):
-            m.a
-        with self.assertRaises(AttributeError):
-            m.b
-        m.a, m.b = 1, 2
-        self.assertEqual(m.a, 1)
-        self.assertEqual(m.b, 2)
-
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_module/__init__.py b/Lib/test/test_module/__init__.py
new file mode 100644
index 00000000000000..d49c44df4d839d
--- /dev/null
+++ b/Lib/test/test_module/__init__.py
@@ -0,0 +1,400 @@
+# Test the module type
+import importlib.machinery
+import unittest
+import weakref
+from test.support import gc_collect
+from test.support import import_helper
+from test.support.script_helper import assert_python_ok
+
+import sys
+ModuleType = type(sys)
+
+
+class FullLoader:
+    pass
+
+
+class BareLoader:
+    pass
+
+
+class ModuleTests(unittest.TestCase):
+    def test_uninitialized(self):
+        # An uninitialized module has no __dict__ or __name__,
+        # and __doc__ is None
+        foo = ModuleType.__new__(ModuleType)
+        self.assertTrue(isinstance(foo.__dict__, dict))
+        self.assertEqual(dir(foo), [])
+        try:
+            s = foo.__name__
+            self.fail("__name__ = %s" % repr(s))
+        except AttributeError:
+            pass
+        self.assertEqual(foo.__doc__, ModuleType.__doc__)
+
+    def test_uninitialized_missing_getattr(self):
+        # Issue 8297
+        # test the text in the AttributeError of an uninitialized module
+        foo = ModuleType.__new__(ModuleType)
+        self.assertRaisesRegex(
+                AttributeError, "module has no attribute 'not_here'",
+                getattr, foo, "not_here")
+
+    def test_missing_getattr(self):
+        # Issue 8297
+        # test the text in the AttributeError
+        foo = ModuleType("foo")
+        self.assertRaisesRegex(
+                AttributeError, "module 'foo' has no attribute 'not_here'",
+                getattr, foo, "not_here")
+
+    def test_no_docstring(self):
+        # Regularly initialized module, no docstring
+        foo = ModuleType("foo")
+        self.assertEqual(foo.__name__, "foo")
+        self.assertEqual(foo.__doc__, None)
+        self.assertIs(foo.__loader__, None)
+        self.assertIs(foo.__package__, None)
+        self.assertIs(foo.__spec__, None)
+        self.assertEqual(foo.__dict__, {"__name__": "foo", "__doc__": None,
+                                        "__loader__": None, "__package__": None,
+                                        "__spec__": None})
+
+    def test_ascii_docstring(self):
+        # ASCII docstring
+        foo = ModuleType("foo", "foodoc")
+        self.assertEqual(foo.__name__, "foo")
+        self.assertEqual(foo.__doc__, "foodoc")
+        self.assertEqual(foo.__dict__,
+                         {"__name__": "foo", "__doc__": "foodoc",
+                          "__loader__": None, "__package__": None,
+                          "__spec__": None})
+
+    def test_unicode_docstring(self):
+        # Unicode docstring
+        foo = ModuleType("foo", "foodoc\u1234")
+        self.assertEqual(foo.__name__, "foo")
+        self.assertEqual(foo.__doc__, "foodoc\u1234")
+        self.assertEqual(foo.__dict__,
+                         {"__name__": "foo", "__doc__": "foodoc\u1234",
+                          "__loader__": None, "__package__": None,
+                          "__spec__": None})
+
+    def test_reinit(self):
+        # Reinitialization should not replace the __dict__
+        foo = ModuleType("foo", "foodoc\u1234")
+        foo.bar = 42
+        d = foo.__dict__
+        foo.__init__("foo", "foodoc")
+        self.assertEqual(foo.__name__, "foo")
+        self.assertEqual(foo.__doc__, "foodoc")
+        self.assertEqual(foo.bar, 42)
+        self.assertEqual(foo.__dict__,
+              {"__name__": "foo", "__doc__": "foodoc", "bar": 42,
+               "__loader__": None, "__package__": None, "__spec__": None})
+        self.assertTrue(foo.__dict__ is d)
+
+    def test_dont_clear_dict(self):
+        # See issue 7140.
+        def f():
+            foo = ModuleType("foo")
+            foo.bar = 4
+            return foo
+        gc_collect()
+        self.assertEqual(f().__dict__["bar"], 4)
+
+    def test_clear_dict_in_ref_cycle(self):
+        destroyed = []
+        m = ModuleType("foo")
+        m.destroyed = destroyed
+        s = """class A:
+    def __init__(self, l):
+        self.l = l
+    def __del__(self):
+        self.l.append(1)
+a = A(destroyed)"""
+        exec(s, m.__dict__)
+        del m
+        gc_collect()
+        self.assertEqual(destroyed, [1])
+
+    def test_weakref(self):
+        m = ModuleType("foo")
+        wr = weakref.ref(m)
+        self.assertIs(wr(), m)
+        del m
+        gc_collect()
+        self.assertIs(wr(), None)
+
+    def test_module_getattr(self):
+        import test.test_module.good_getattr as gga
+        from test.test_module.good_getattr import test
+        self.assertEqual(test, "There is test")
+        self.assertEqual(gga.x, 1)
+        self.assertEqual(gga.y, 2)
+        with self.assertRaisesRegex(AttributeError,
+                                    "Deprecated, use whatever instead"):
+            gga.yolo
+        self.assertEqual(gga.whatever, "There is whatever")
+        del sys.modules['test.test_module.good_getattr']
+
+    def test_module_getattr_errors(self):
+        import test.test_module.bad_getattr as bga
+        from test.test_module import bad_getattr2
+        self.assertEqual(bga.x, 1)
+        self.assertEqual(bad_getattr2.x, 1)
+        with self.assertRaises(TypeError):
+            bga.nope
+        with self.assertRaises(TypeError):
+            bad_getattr2.nope
+        del sys.modules['test.test_module.bad_getattr']
+        if 'test.test_module.bad_getattr2' in sys.modules:
+            del sys.modules['test.test_module.bad_getattr2']
+
+    def test_module_dir(self):
+        import test.test_module.good_getattr as gga
+        self.assertEqual(dir(gga), ['a', 'b', 'c'])
+        del sys.modules['test.test_module.good_getattr']
+
+    def test_module_dir_errors(self):
+        import test.test_module.bad_getattr as bga
+        from test.test_module import bad_getattr2
+        with self.assertRaises(TypeError):
+            dir(bga)
+        with self.assertRaises(TypeError):
+            dir(bad_getattr2)
+        del sys.modules['test.test_module.bad_getattr']
+        if 'test.test_module.bad_getattr2' in sys.modules:
+            del sys.modules['test.test_module.bad_getattr2']
+
+    def test_module_getattr_tricky(self):
+        from test.test_module import bad_getattr3
+        # these lookups should not crash
+        with self.assertRaises(AttributeError):
+            bad_getattr3.one
+        with self.assertRaises(AttributeError):
+            bad_getattr3.delgetattr
+        if 'test.test_module.bad_getattr3' in sys.modules:
+            del sys.modules['test.test_module.bad_getattr3']
+
+    def test_module_repr_minimal(self):
+        # reprs when modules have no __file__, __name__, or __loader__
+        m = ModuleType('foo')
+        del m.__name__
+        self.assertEqual(repr(m), "<module '?'>")
+
+    def test_module_repr_with_name(self):
+        m = ModuleType('foo')
+        self.assertEqual(repr(m), "<module 'foo'>")
+
+    def test_module_repr_with_name_and_filename(self):
+        m = ModuleType('foo')
+        m.__file__ = '/tmp/foo.py'
+        self.assertEqual(repr(m), "<module 'foo' from '/tmp/foo.py'>")
+
+    def test_module_repr_with_filename_only(self):
+        m = ModuleType('foo')
+        del m.__name__
+        m.__file__ = '/tmp/foo.py'
+        self.assertEqual(repr(m), "<module '?' from '/tmp/foo.py'>")
+
+    def test_module_repr_with_loader_as_None(self):
+        m = ModuleType('foo')
+        assert m.__loader__ is None
+        self.assertEqual(repr(m), "<module 'foo'>")
+
+    def test_module_repr_with_bare_loader_but_no_name(self):
+        m = ModuleType('foo')
+        del m.__name__
+        # Yes, a class not an instance.
+        m.__loader__ = BareLoader
+        loader_repr = repr(BareLoader)
+        self.assertEqual(
+            repr(m), "<module '?' ({})>".format(loader_repr))
+
+    def test_module_repr_with_full_loader_but_no_name(self):
+        # m.__loader__.module_repr() will fail because the module has no
+        # m.__name__.  This exception will get suppressed and instead the
+        # loader's repr will be used.
+        m = ModuleType('foo')
+        del m.__name__
+        # Yes, a class not an instance.
+        m.__loader__ = FullLoader
+        loader_repr = repr(FullLoader)
+        self.assertEqual(
+            repr(m), "<module '?' ({})>".format(loader_repr))
+
+    def test_module_repr_with_bare_loader(self):
+        m = ModuleType('foo')
+        # Yes, a class not an instance.
+        m.__loader__ = BareLoader
+        module_repr = repr(BareLoader)
+        self.assertEqual(
+            repr(m), "<module 'foo' ({})>".format(module_repr))
+
+    def test_module_repr_with_full_loader(self):
+        m = ModuleType('foo')
+        # Yes, a class not an instance.
+        m.__loader__ = FullLoader
+        self.assertEqual(
+            repr(m), f"<module 'foo' (<class '{__name__}.FullLoader'>)>")
+
+    def test_module_repr_with_bare_loader_and_filename(self):
+        m = ModuleType('foo')
+        # Yes, a class not an instance.
+        m.__loader__ = BareLoader
+        m.__file__ = '/tmp/foo.py'
+        self.assertEqual(repr(m), "<module 'foo' from '/tmp/foo.py'>")
+
+    def test_module_repr_with_full_loader_and_filename(self):
+        m = ModuleType('foo')
+        # Yes, a class not an instance.
+        m.__loader__ = FullLoader
+        m.__file__ = '/tmp/foo.py'
+        self.assertEqual(repr(m), "<module 'foo' from '/tmp/foo.py'>")
+
+    def test_module_repr_builtin(self):
+        self.assertEqual(repr(sys), "<module 'sys' (built-in)>")
+
+    def test_module_repr_source(self):
+        r = repr(unittest)
+        starts_with = "<module 'unittest' from '"
+        ends_with = "__init__.py'>"
+        self.assertEqual(r[:len(starts_with)], starts_with,
+                         '{!r} does not start with {!r}'.format(r, starts_with))
+        self.assertEqual(r[-len(ends_with):], ends_with,
+                         '{!r} does not end with {!r}'.format(r, ends_with))
+
+    def test_module_repr_with_namespace_package(self):
+        m = ModuleType('foo')
+        loader = importlib.machinery.NamespaceLoader('foo', ['bar'], 'baz')
+        spec = importlib.machinery.ModuleSpec('foo', loader)
+        m.__loader__ = loader
+        m.__spec__ = spec
+        self.assertEqual(repr(m), "<module 'foo' (namespace) from ['bar']>")
+
+    def test_module_repr_with_namespace_package_and_custom_loader(self):
+        m = ModuleType('foo')
+        loader = BareLoader()
+        spec = importlib.machinery.ModuleSpec('foo', loader)
+        m.__loader__ = loader
+        m.__spec__ = spec
+        expected_repr_pattern = r"<module 'foo' \(<.*\.BareLoader object at .+>\)>"
+        self.assertRegex(repr(m), expected_repr_pattern)
+        self.assertNotIn('from', repr(m))
+
+    def test_module_repr_with_fake_namespace_package(self):
+        m = ModuleType('foo')
+        loader = BareLoader()
+        loader._path = ['spam']
+        spec = importlib.machinery.ModuleSpec('foo', loader)
+        m.__loader__ = loader
+        m.__spec__ = spec
+        expected_repr_pattern = r"<module 'foo' \(<.*\.BareLoader object at .+>\)>"
+        self.assertRegex(repr(m), expected_repr_pattern)
+        self.assertNotIn('from', repr(m))
+
+    def test_module_finalization_at_shutdown(self):
+        # Module globals and builtins should still be available during shutdown
+        rc, out, err = assert_python_ok("-c", "from test.test_module import final_a")
+        self.assertFalse(err)
+        lines = out.splitlines()
+        self.assertEqual(set(lines), {
+            b"x = a",
+            b"x = b",
+            b"final_a.x = a",
+            b"final_b.x = b",
+            b"len = len",
+            b"shutil.rmtree = rmtree"})
+
+    def test_descriptor_errors_propagate(self):
+        class Descr:
+            def __get__(self, o, t):
+                raise RuntimeError
+        class M(ModuleType):
+            melon = Descr()
+        self.assertRaises(RuntimeError, getattr, M("mymod"), "melon")
+
+    def test_lazy_create_annotations(self):
+        # module objects lazy create their __annotations__ dict on demand.
+        # the annotations dict is stored in module.__dict__.
+        # a freshly created module shouldn't have an annotations dict yet.
+        foo = ModuleType("foo")
+        for i in range(4):
+            self.assertFalse("__annotations__" in foo.__dict__)
+            d = foo.__annotations__
+            self.assertTrue("__annotations__" in foo.__dict__)
+            self.assertEqual(foo.__annotations__, d)
+            self.assertEqual(foo.__dict__['__annotations__'], d)
+            if i % 2:
+                del foo.__annotations__
+            else:
+                del foo.__dict__['__annotations__']
+
+    def test_setting_annotations(self):
+        foo = ModuleType("foo")
+        for i in range(4):
+            self.assertFalse("__annotations__" in foo.__dict__)
+            d = {'a': int}
+            foo.__annotations__ = d
+            self.assertTrue("__annotations__" in foo.__dict__)
+            self.assertEqual(foo.__annotations__, d)
+            self.assertEqual(foo.__dict__['__annotations__'], d)
+            if i % 2:
+                del foo.__annotations__
+            else:
+                del foo.__dict__['__annotations__']
+
+    def test_annotations_getset_raises(self):
+        # double delete
+        foo = ModuleType("foo")
+        foo.__annotations__ = {}
+        del foo.__annotations__
+        with self.assertRaises(AttributeError):
+            del foo.__annotations__
+
+    def test_annotations_are_created_correctly(self):
+        ann_module4 = import_helper.import_fresh_module(
+            'test.typinganndata.ann_module4',
+        )
+        self.assertTrue("__annotations__" in ann_module4.__dict__)
+        del ann_module4.__annotations__
+        self.assertFalse("__annotations__" in ann_module4.__dict__)
+
+
+    def test_repeated_attribute_pops(self):
+        # Repeated accesses to module attribute will be specialized
+        # Check that popping the attribute doesn't break it
+        m = ModuleType("test")
+        d = m.__dict__
+        count = 0
+        for _ in range(100):
+            m.attr = 1
+            count += m.attr # Might be specialized
+            d.pop("attr")
+        self.assertEqual(count, 100)
+
+    # frozen and namespace module reprs are tested in importlib.
+
+    def test_subclass_with_slots(self):
+        # In 3.11alpha this crashed, as the slots weren't NULLed.
+
+        class ModuleWithSlots(ModuleType):
+            __slots__ = ("a", "b")
+
+            def __init__(self, name):
+                super().__init__(name)
+
+        m = ModuleWithSlots("name")
+        with self.assertRaises(AttributeError):
+            m.a
+        with self.assertRaises(AttributeError):
+            m.b
+        m.a, m.b = 1, 2
+        self.assertEqual(m.a, 1)
+        self.assertEqual(m.b, 2)
+
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/bad_getattr.py b/Lib/test/test_module/bad_getattr.py
similarity index 100%
rename from Lib/test/bad_getattr.py
rename to Lib/test/test_module/bad_getattr.py
diff --git a/Lib/test/bad_getattr2.py b/Lib/test/test_module/bad_getattr2.py
similarity index 100%
rename from Lib/test/bad_getattr2.py
rename to Lib/test/test_module/bad_getattr2.py
diff --git a/Lib/test/bad_getattr3.py b/Lib/test/test_module/bad_getattr3.py
similarity index 100%
rename from Lib/test/bad_getattr3.py
rename to Lib/test/test_module/bad_getattr3.py
diff --git a/Lib/test/final_a.py b/Lib/test/test_module/final_a.py
similarity index 79%
rename from Lib/test/final_a.py
rename to Lib/test/test_module/final_a.py
index 390ee8895a8a9e..a983f3111248e0 100644
--- a/Lib/test/final_a.py
+++ b/Lib/test/test_module/final_a.py
@@ -3,7 +3,7 @@
 """
 
 import shutil
-import test.final_b
+import test.test_module.final_b
 
 x = 'a'
 
@@ -11,7 +11,7 @@ class C:
     def __del__(self):
         # Inspect module globals and builtins
         print("x =", x)
-        print("final_b.x =", test.final_b.x)
+        print("final_b.x =", test.test_module.final_b.x)
         print("shutil.rmtree =", getattr(shutil.rmtree, '__name__', None))
         print("len =", getattr(len, '__name__', None))
 
diff --git a/Lib/test/final_b.py b/Lib/test/test_module/final_b.py
similarity index 79%
rename from Lib/test/final_b.py
rename to Lib/test/test_module/final_b.py
index 7228d82b880156..f3e8d5594904f2 100644
--- a/Lib/test/final_b.py
+++ b/Lib/test/test_module/final_b.py
@@ -3,7 +3,7 @@
 """
 
 import shutil
-import test.final_a
+import test.test_module.final_a
 
 x = 'b'
 
@@ -11,7 +11,7 @@ class C:
     def __del__(self):
         # Inspect module globals and builtins
         print("x =", x)
-        print("final_a.x =", test.final_a.x)
+        print("final_a.x =", test.test_module.final_a.x)
         print("shutil.rmtree =", getattr(shutil.rmtree, '__name__', None))
         print("len =", getattr(len, '__name__', None))
 
diff --git a/Lib/test/good_getattr.py b/Lib/test/test_module/good_getattr.py
similarity index 100%
rename from Lib/test/good_getattr.py
rename to Lib/test/test_module/good_getattr.py
diff --git a/Lib/test/test_monitoring.py b/Lib/test/test_monitoring.py
index 06e54fa2965f0a..a2efbc95f556c6 100644
--- a/Lib/test/test_monitoring.py
+++ b/Lib/test/test_monitoring.py
@@ -1,12 +1,14 @@
 """Test suite for the sys.monitoring."""
 
 import collections
+import dis
 import functools
 import operator
 import sys
+import textwrap
 import types
 import unittest
-
+import asyncio
 
 PAIR = (0,1)
 
@@ -134,20 +136,27 @@ def test_c_return_count(self):
 
 E = sys.monitoring.events
 
-SIMPLE_EVENTS = [
+INSTRUMENTED_EVENTS = [
     (E.PY_START, "start"),
     (E.PY_RESUME, "resume"),
     (E.PY_RETURN, "return"),
     (E.PY_YIELD, "yield"),
     (E.JUMP, "jump"),
     (E.BRANCH, "branch"),
+]
+
+EXCEPT_EVENTS = [
     (E.RAISE, "raise"),
     (E.PY_UNWIND, "unwind"),
     (E.EXCEPTION_HANDLED, "exception_handled"),
+]
+
+SIMPLE_EVENTS = INSTRUMENTED_EVENTS + EXCEPT_EVENTS + [
     (E.C_RAISE, "c_raise"),
     (E.C_RETURN, "c_return"),
 ]
 
+
 SIMPLE_EVENT_SET = functools.reduce(operator.or_, [ev for (ev, _) in SIMPLE_EVENTS], 0) | E.CALL
 
 
@@ -241,7 +250,6 @@ def check_events(self, func, expected=None):
             expected = func.events
         self.assertEqual(events, expected)
 
-
 class MonitoringEventsTest(MonitoringEventsBase, unittest.TestCase):
 
     def test_just_pass(self):
@@ -493,6 +501,22 @@ def test_two_with_disable(self):
             self.assertEqual(sys.monitoring._all_events(), {})
             sys.monitoring.restart_events()
 
+    def test_with_instruction_event(self):
+        """Test that the second tool can set events with instruction events set by the first tool."""
+        def f():
+            pass
+        code = f.__code__
+
+        try:
+            self.assertEqual(sys.monitoring._all_events(), {})
+            sys.monitoring.set_local_events(TEST_TOOL, code, E.INSTRUCTION | E.LINE)
+            sys.monitoring.set_local_events(TEST_TOOL2, code, E.LINE)
+        finally:
+            sys.monitoring.set_events(TEST_TOOL, 0)
+            sys.monitoring.set_events(TEST_TOOL2, 0)
+            self.assertEqual(sys.monitoring._all_events(), {})
+
+
 class LineMonitoringTest(MonitoringTestBase, unittest.TestCase):
 
     def test_lines_single(self):
@@ -506,7 +530,7 @@ def test_lines_single(self):
             sys.monitoring.set_events(TEST_TOOL, 0)
             sys.monitoring.register_callback(TEST_TOOL, E.LINE, None)
             start = LineMonitoringTest.test_lines_single.__code__.co_firstlineno
-            self.assertEqual(events, [start+7, 14, start+8])
+            self.assertEqual(events, [start+7, 16, start+8])
         finally:
             sys.monitoring.set_events(TEST_TOOL, 0)
             sys.monitoring.register_callback(TEST_TOOL, E.LINE, None)
@@ -524,7 +548,7 @@ def test_lines_loop(self):
             sys.monitoring.set_events(TEST_TOOL, 0)
             sys.monitoring.register_callback(TEST_TOOL, E.LINE, None)
             start = LineMonitoringTest.test_lines_loop.__code__.co_firstlineno
-            self.assertEqual(events, [start+7, 21, 22, 21, 22, 21, start+8])
+            self.assertEqual(events, [start+7, 23, 24, 23, 24, 23, start+8])
         finally:
             sys.monitoring.set_events(TEST_TOOL, 0)
             sys.monitoring.register_callback(TEST_TOOL, E.LINE, None)
@@ -546,7 +570,7 @@ def test_lines_two(self):
             sys.monitoring.register_callback(TEST_TOOL, E.LINE, None)
             sys.monitoring.register_callback(TEST_TOOL2, E.LINE, None)
             start = LineMonitoringTest.test_lines_two.__code__.co_firstlineno
-            expected = [start+10, 14, start+11]
+            expected = [start+10, 16, start+11]
             self.assertEqual(events, expected)
             self.assertEqual(events2, expected)
         finally:
@@ -617,6 +641,49 @@ def func2():
 
         self.check_lines(func2, [1,2,3,4,5,6])
 
+class TestDisable(MonitoringTestBase, unittest.TestCase):
+
+    def gen(self, cond):
+        for i in range(10):
+            if cond:
+                yield 1
+            else:
+                yield 2
+
+    def raise_handle_reraise(self):
+        try:
+            1/0
+        except:
+            raise
+
+    def test_disable_legal_events(self):
+        for event, name in INSTRUMENTED_EVENTS:
+            try:
+                counter = CounterWithDisable()
+                counter.disable = True
+                sys.monitoring.register_callback(TEST_TOOL, event, counter)
+                sys.monitoring.set_events(TEST_TOOL, event)
+                for _ in self.gen(1):
+                    pass
+                self.assertLess(counter.count, 4)
+            finally:
+                sys.monitoring.set_events(TEST_TOOL, 0)
+                sys.monitoring.register_callback(TEST_TOOL, event, None)
+
+
+    def test_disable_illegal_events(self):
+        for event, name in EXCEPT_EVENTS:
+            try:
+                counter = CounterWithDisable()
+                counter.disable = True
+                sys.monitoring.register_callback(TEST_TOOL, event, counter)
+                sys.monitoring.set_events(TEST_TOOL, event)
+                with self.assertRaises(ValueError):
+                    self.raise_handle_reraise()
+            finally:
+                sys.monitoring.set_events(TEST_TOOL, 0)
+                sys.monitoring.register_callback(TEST_TOOL, event, None)
+
 
 class ExceptionRecorder:
 
@@ -630,7 +697,7 @@ def __call__(self, code, offset, exc):
 
 class CheckEvents(MonitoringTestBase, unittest.TestCase):
 
-    def check_events(self, func, expected, tool=TEST_TOOL, recorders=(ExceptionRecorder,)):
+    def get_events(self, func, tool, recorders):
         try:
             self.assertEqual(sys.monitoring._all_events(), {})
             event_list = []
@@ -644,19 +711,70 @@ def check_events(self, func, expected, tool=TEST_TOOL, recorders=(ExceptionRecor
             sys.monitoring.set_events(tool, 0)
             for recorder in recorders:
                 sys.monitoring.register_callback(tool, recorder.event_type, None)
-            self.assertEqual(event_list, expected)
+            return event_list
         finally:
             sys.monitoring.set_events(tool, 0)
             for recorder in recorders:
                 sys.monitoring.register_callback(tool, recorder.event_type, None)
 
+    def check_events(self, func, expected, tool=TEST_TOOL, recorders=(ExceptionRecorder,)):
+        events = self.get_events(func, tool, recorders)
+        if events != expected:
+            print(events, file = sys.stderr)
+        self.assertEqual(events, expected)
+
+    def check_balanced(self, func, recorders):
+        events = self.get_events(func, TEST_TOOL, recorders)
+        self.assertEqual(len(events)%2, 0)
+        for r, h in zip(events[::2],events[1::2]):
+            r0 = r[0]
+            self.assertIn(r0, ("raise", "reraise"))
+            h0 = h[0]
+            self.assertIn(h0, ("handled", "unwind"))
+            self.assertEqual(r[1], h[1])
+
+
 class StopiterationRecorder(ExceptionRecorder):
 
     event_type = E.STOP_ITERATION
 
-class ExceptionMontoringTest(CheckEvents):
+class ReraiseRecorder(ExceptionRecorder):
+
+    event_type = E.RERAISE
+
+    def __call__(self, code, offset, exc):
+        self.events.append(("reraise", type(exc)))
+
+class UnwindRecorder(ExceptionRecorder):
+
+    event_type = E.PY_UNWIND
+
+    def __call__(self, code, offset, exc):
+        self.events.append(("unwind", type(exc)))
+
+class ExceptionHandledRecorder(ExceptionRecorder):
+
+    event_type = E.EXCEPTION_HANDLED
+
+    def __call__(self, code, offset, exc):
+        self.events.append(("handled", type(exc)))
+
+class ThrowRecorder(ExceptionRecorder):
+
+    event_type = E.PY_THROW
+
+    def __call__(self, code, offset, exc):
+        self.events.append(("throw", type(exc)))
+
+class ExceptionMonitoringTest(CheckEvents):
+
 
-    recorder = ExceptionRecorder
+    exception_recorders = (
+        ExceptionRecorder,
+        ReraiseRecorder,
+        ExceptionHandledRecorder,
+        UnwindRecorder
+    )
 
     def test_simple_try_except(self):
 
@@ -670,6 +788,8 @@ def func1():
 
         self.check_events(func1, [("raise", KeyError)])
 
+    def test_implicit_stop_iteration(self):
+
         def gen():
             yield 1
             return 2
@@ -680,6 +800,142 @@ def implicit_stop_iteration():
 
         self.check_events(implicit_stop_iteration, [("raise", StopIteration)], recorders=(StopiterationRecorder,))
 
+    initial = [
+        ("raise", ZeroDivisionError),
+        ("handled", ZeroDivisionError)
+    ]
+
+    reraise = [
+        ("reraise", ZeroDivisionError),
+        ("handled", ZeroDivisionError)
+    ]
+
+    def test_explicit_reraise(self):
+
+        def func():
+            try:
+                try:
+                    1/0
+                except:
+                    raise
+            except:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+    def test_explicit_reraise_named(self):
+
+        def func():
+            try:
+                try:
+                    1/0
+                except Exception as ex:
+                    raise
+            except:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+    def test_implicit_reraise(self):
+
+        def func():
+            try:
+                try:
+                    1/0
+                except ValueError:
+                    pass
+            except:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+
+    def test_implicit_reraise_named(self):
+
+        def func():
+            try:
+                try:
+                    1/0
+                except ValueError as ex:
+                    pass
+            except:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+    def test_try_finally(self):
+
+        def func():
+            try:
+                try:
+                    1/0
+                finally:
+                    pass
+            except:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+    def test_async_for(self):
+
+        def func():
+
+            async def async_generator():
+                for i in range(1):
+                    raise ZeroDivisionError
+                    yield i
+
+            async def async_loop():
+                try:
+                    async for item in async_generator():
+                        pass
+                except Exception:
+                    pass
+
+            try:
+                async_loop().send(None)
+            except StopIteration:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+    def test_throw(self):
+
+        def gen():
+            yield 1
+            yield 2
+
+        def func():
+            try:
+                g = gen()
+                next(g)
+                g.throw(IndexError)
+            except IndexError:
+                pass
+
+        self.check_balanced(
+            func,
+            recorders = self.exception_recorders)
+
+        events = self.get_events(
+            func,
+            TEST_TOOL,
+            self.exception_recorders + (ThrowRecorder,)
+        )
+        self.assertEqual(events[0], ("throw", IndexError))
+
 class LineRecorder:
 
     event_type = E.LINE
@@ -731,12 +987,12 @@ def func1():
             line3 = 3
 
         self.check_events(func1, recorders = MANY_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('call', 'func1', sys.monitoring.MISSING),
             ('line', 'func1', 1),
             ('line', 'func1', 2),
             ('line', 'func1', 3),
-            ('line', 'check_events', 11),
+            ('line', 'get_events', 11),
             ('call', 'set_events', 2)])
 
     def test_c_call(self):
@@ -747,14 +1003,14 @@ def func2():
             line3 = 3
 
         self.check_events(func2, recorders = MANY_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('call', 'func2', sys.monitoring.MISSING),
             ('line', 'func2', 1),
             ('line', 'func2', 2),
             ('call', 'append', [2]),
             ('C return', 'append', [2]),
             ('line', 'func2', 3),
-            ('line', 'check_events', 11),
+            ('line', 'get_events', 11),
             ('call', 'set_events', 2)])
 
     def test_try_except(self):
@@ -768,7 +1024,7 @@ def func3():
             line = 6
 
         self.check_events(func3, recorders = MANY_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('call', 'func3', sys.monitoring.MISSING),
             ('line', 'func3', 1),
             ('line', 'func3', 2),
@@ -777,7 +1033,7 @@ def func3():
             ('line', 'func3', 4),
             ('line', 'func3', 5),
             ('line', 'func3', 6),
-            ('line', 'check_events', 11),
+            ('line', 'get_events', 11),
             ('call', 'set_events', 2)])
 
 class InstructionRecorder:
@@ -789,7 +1045,7 @@ def __init__(self, events):
 
     def __call__(self, code, offset):
         # Filter out instructions in check_events to lower noise
-        if code.co_name != "check_events":
+        if code.co_name != "get_events":
             self.events.append(("instruction", code.co_name, offset))
 
 
@@ -806,7 +1062,7 @@ def func1():
             line3 = 3
 
         self.check_events(func1, recorders = LINE_AND_INSTRUCTION_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func1', 1),
             ('instruction', 'func1', 2),
             ('instruction', 'func1', 4),
@@ -817,7 +1073,7 @@ def func1():
             ('instruction', 'func1', 10),
             ('instruction', 'func1', 12),
             ('instruction', 'func1', 14),
-            ('line', 'check_events', 11)])
+            ('line', 'get_events', 11)])
 
     def test_c_call(self):
 
@@ -827,7 +1083,7 @@ def func2():
             line3 = 3
 
         self.check_events(func2, recorders = LINE_AND_INSTRUCTION_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func2', 1),
             ('instruction', 'func2', 2),
             ('instruction', 'func2', 4),
@@ -841,7 +1097,7 @@ def func2():
             ('instruction', 'func2', 40),
             ('instruction', 'func2', 42),
             ('instruction', 'func2', 44),
-            ('line', 'check_events', 11)])
+            ('line', 'get_events', 11)])
 
     def test_try_except(self):
 
@@ -854,7 +1110,7 @@ def func3():
             line = 6
 
         self.check_events(func3, recorders = LINE_AND_INSTRUCTION_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func3', 1),
             ('instruction', 'func3', 2),
             ('line', 'func3', 2),
@@ -874,7 +1130,7 @@ def func3():
             ('instruction', 'func3', 30),
             ('instruction', 'func3', 32),
             ('instruction', 'func3', 34),
-            ('line', 'check_events', 11)])
+            ('line', 'get_events', 11)])
 
     def test_with_restart(self):
         def func1():
@@ -883,7 +1139,7 @@ def func1():
             line3 = 3
 
         self.check_events(func1, recorders = LINE_AND_INSTRUCTION_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func1', 1),
             ('instruction', 'func1', 2),
             ('instruction', 'func1', 4),
@@ -894,12 +1150,12 @@ def func1():
             ('instruction', 'func1', 10),
             ('instruction', 'func1', 12),
             ('instruction', 'func1', 14),
-            ('line', 'check_events', 11)])
+            ('line', 'get_events', 11)])
 
         sys.monitoring.restart_events()
 
         self.check_events(func1, recorders = LINE_AND_INSTRUCTION_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func1', 1),
             ('instruction', 'func1', 2),
             ('instruction', 'func1', 4),
@@ -910,9 +1166,26 @@ def func1():
             ('instruction', 'func1', 10),
             ('instruction', 'func1', 12),
             ('instruction', 'func1', 14),
-            ('line', 'check_events', 11)])
+            ('line', 'get_events', 11)])
 
-class TestInstallIncrementallly(MonitoringTestBase, unittest.TestCase):
+    def test_turn_off_only_instruction(self):
+        """
+        LINE events should be recorded after INSTRUCTION event is turned off
+        """
+        events = []
+        def line(*args):
+            events.append("line")
+        sys.monitoring.set_events(TEST_TOOL, 0)
+        sys.monitoring.register_callback(TEST_TOOL, E.LINE, line)
+        sys.monitoring.register_callback(TEST_TOOL, E.INSTRUCTION, lambda *args: None)
+        sys.monitoring.set_events(TEST_TOOL, E.LINE | E.INSTRUCTION)
+        sys.monitoring.set_events(TEST_TOOL, E.LINE)
+        events = []
+        a = 0
+        sys.monitoring.set_events(TEST_TOOL, 0)
+        self.assertGreater(len(events), 0)
+
+class TestInstallIncrementally(MonitoringTestBase, unittest.TestCase):
 
     def check_events(self, func, must_include, tool=TEST_TOOL, recorders=(ExceptionRecorder,)):
         try:
@@ -941,19 +1214,19 @@ def func1():
 
     MUST_INCLUDE_LI = [
             ('instruction', 'func1', 2),
-            ('line', 'func1', 1),
+            ('line', 'func1', 2),
             ('instruction', 'func1', 4),
             ('instruction', 'func1', 6)]
 
     def test_line_then_instruction(self):
         recorders = [ LineRecorder, InstructionRecorder ]
         self.check_events(self.func1,
-                          recorders = recorders, must_include = self.EXPECTED_LI)
+                          recorders = recorders, must_include = self.MUST_INCLUDE_LI)
 
     def test_instruction_then_line(self):
-        recorders = [ InstructionRecorder, LineRecorderLowNoise ]
+        recorders = [ InstructionRecorder, LineRecorder ]
         self.check_events(self.func1,
-                          recorders = recorders, must_include = self.EXPECTED_LI)
+                          recorders = recorders, must_include = self.MUST_INCLUDE_LI)
 
     @staticmethod
     def func2():
@@ -968,19 +1241,21 @@ def func2():
 
 
 
-    def test_line_then_instruction(self):
+    def test_call_then_instruction(self):
         recorders = [ CallRecorder, InstructionRecorder ]
         self.check_events(self.func2,
                           recorders = recorders, must_include = self.MUST_INCLUDE_CI)
 
-    def test_instruction_then_line(self):
+    def test_instruction_then_call(self):
         recorders = [ InstructionRecorder, CallRecorder ]
         self.check_events(self.func2,
                           recorders = recorders, must_include = self.MUST_INCLUDE_CI)
 
+LOCAL_RECORDERS = CallRecorder, LineRecorder, CReturnRecorder, CRaiseRecorder
+
 class TestLocalEvents(MonitoringTestBase, unittest.TestCase):
 
-    def check_events(self, func, expected, tool=TEST_TOOL, recorders=(ExceptionRecorder,)):
+    def check_events(self, func, expected, tool=TEST_TOOL, recorders=()):
         try:
             self.assertEqual(sys.monitoring._all_events(), {})
             event_list = []
@@ -1008,7 +1283,7 @@ def func1():
             line2 = 2
             line3 = 3
 
-        self.check_events(func1, recorders = MANY_RECORDERS, expected = [
+        self.check_events(func1, recorders = LOCAL_RECORDERS, expected = [
             ('line', 'func1', 1),
             ('line', 'func1', 2),
             ('line', 'func1', 3)])
@@ -1020,7 +1295,7 @@ def func2():
             [].append(2)
             line3 = 3
 
-        self.check_events(func2, recorders = MANY_RECORDERS, expected = [
+        self.check_events(func2, recorders = LOCAL_RECORDERS, expected = [
             ('line', 'func2', 1),
             ('line', 'func2', 2),
             ('call', 'append', [2]),
@@ -1037,15 +1312,17 @@ def func3():
                 line = 5
             line = 6
 
-        self.check_events(func3, recorders = MANY_RECORDERS, expected = [
+        self.check_events(func3, recorders = LOCAL_RECORDERS, expected = [
             ('line', 'func3', 1),
             ('line', 'func3', 2),
             ('line', 'func3', 3),
-            ('raise', KeyError),
             ('line', 'func3', 4),
             ('line', 'func3', 5),
             ('line', 'func3', 6)])
 
+    def test_set_non_local_event(self):
+        with self.assertRaises(ValueError):
+            sys.monitoring.set_local_events(TEST_TOOL, just_call.__code__, E.RAISE)
 
 def line_from_offset(code, offset):
     for start, end, line in code.co_lines():
@@ -1101,6 +1378,7 @@ def func():
                     x = 4
                 else:
                     x = 6
+            7
 
         self.check_events(func, recorders = JUMP_AND_BRANCH_RECORDERS, expected = [
             ('branch', 'func', 2, 2),
@@ -1109,10 +1387,10 @@ def func():
             ('branch', 'func', 2, 2),
             ('branch', 'func', 3, 4),
             ('jump', 'func', 4, 2),
-            ('branch', 'func', 2, 2)])
+            ('branch', 'func', 2, 7)])
 
         self.check_events(func, recorders = JUMP_BRANCH_AND_LINE_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func', 1),
             ('line', 'func', 2),
             ('branch', 'func', 2, 2),
@@ -1127,8 +1405,9 @@ def func():
             ('line', 'func', 4),
             ('jump', 'func', 4, 2),
             ('line', 'func', 2),
-            ('branch', 'func', 2, 2),
-            ('line', 'check_events', 11)])
+            ('branch', 'func', 2, 7),
+            ('line', 'func', 7),
+            ('line', 'get_events', 11)])
 
     def test_except_star(self):
 
@@ -1147,7 +1426,7 @@ def func():
 
 
         self.check_events(func, recorders = JUMP_BRANCH_AND_LINE_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func', 1),
             ('line', 'func', 2),
             ('line', 'func', 3),
@@ -1157,11 +1436,11 @@ def func():
             ('line', 'meth', 1),
             ('jump', 'func', 5, 5),
             ('jump', 'func', 5, '[offset=114]'),
-            ('branch', 'func', '[offset=120]', '[offset=122]'),
-            ('line', 'check_events', 11)])
+            ('branch', 'func', '[offset=120]', '[offset=124]'),
+            ('line', 'get_events', 11)])
 
         self.check_events(func, recorders = FLOW_AND_LINE_RECORDERS, expected = [
-            ('line', 'check_events', 10),
+            ('line', 'get_events', 10),
             ('line', 'func', 1),
             ('line', 'func', 2),
             ('line', 'func', 3),
@@ -1173,9 +1452,224 @@ def func():
             ('return', None),
             ('jump', 'func', 5, 5),
             ('jump', 'func', 5, '[offset=114]'),
-            ('branch', 'func', '[offset=120]', '[offset=122]'),
+            ('branch', 'func', '[offset=120]', '[offset=124]'),
             ('return', None),
-            ('line', 'check_events', 11)])
+            ('line', 'get_events', 11)])
+
+class TestLoadSuperAttr(CheckEvents):
+    RECORDERS = CallRecorder, LineRecorder, CRaiseRecorder, CReturnRecorder
+
+    def _exec(self, co):
+        d = {}
+        exec(co, d, d)
+        return d
+
+    def _exec_super(self, codestr, optimized=False):
+        # The compiler checks for statically visible shadowing of the name
+        # `super`, and declines to emit `LOAD_SUPER_ATTR` if shadowing is found.
+        # So inserting `super = super` prevents the compiler from emitting
+        # `LOAD_SUPER_ATTR`, and allows us to test that monitoring events for
+        # `LOAD_SUPER_ATTR` are equivalent to those we'd get from the
+        # un-optimized `LOAD_GLOBAL super; CALL; LOAD_ATTR` form.
+        assignment = "x = 1" if optimized else "super = super"
+        codestr = f"{assignment}\n{textwrap.dedent(codestr)}"
+        co = compile(codestr, "<string>", "exec")
+        # validate that we really do have a LOAD_SUPER_ATTR, only when optimized
+        self.assertEqual(self._has_load_super_attr(co), optimized)
+        return self._exec(co)
+
+    def _has_load_super_attr(self, co):
+        has = any(instr.opname == "LOAD_SUPER_ATTR" for instr in dis.get_instructions(co))
+        if not has:
+            has = any(
+                isinstance(c, types.CodeType) and self._has_load_super_attr(c)
+                for c in co.co_consts
+            )
+        return has
+
+    def _super_method_call(self, optimized=False):
+        codestr = """
+            class A:
+                def method(self, x):
+                    return x
+
+            class B(A):
+                def method(self, x):
+                    return super(
+                    ).method(
+                        x
+                    )
+
+            b = B()
+            def f():
+                return b.method(1)
+        """
+        d = self._exec_super(codestr, optimized)
+        expected = [
+            ('line', 'get_events', 10),
+            ('call', 'f', sys.monitoring.MISSING),
+            ('line', 'f', 1),
+            ('call', 'method', d["b"]),
+            ('line', 'method', 1),
+            ('call', 'super', sys.monitoring.MISSING),
+            ('C return', 'super', sys.monitoring.MISSING),
+            ('line', 'method', 2),
+            ('line', 'method', 3),
+            ('line', 'method', 2),
+            ('call', 'method', 1),
+            ('line', 'method', 1),
+            ('line', 'method', 1),
+            ('line', 'get_events', 11),
+            ('call', 'set_events', 2),
+        ]
+        return d["f"], expected
+
+    def test_method_call(self):
+        nonopt_func, nonopt_expected = self._super_method_call(optimized=False)
+        opt_func, opt_expected = self._super_method_call(optimized=True)
+
+        self.check_events(nonopt_func, recorders=self.RECORDERS, expected=nonopt_expected)
+        self.check_events(opt_func, recorders=self.RECORDERS, expected=opt_expected)
+
+    def _super_method_call_error(self, optimized=False):
+        codestr = """
+            class A:
+                def method(self, x):
+                    return x
+
+            class B(A):
+                def method(self, x):
+                    return super(
+                        x,
+                        self,
+                    ).method(
+                        x
+                    )
+
+            b = B()
+            def f():
+                try:
+                    return b.method(1)
+                except TypeError:
+                    pass
+                else:
+                    assert False, "should have raised TypeError"
+        """
+        d = self._exec_super(codestr, optimized)
+        expected = [
+            ('line', 'get_events', 10),
+            ('call', 'f', sys.monitoring.MISSING),
+            ('line', 'f', 1),
+            ('line', 'f', 2),
+            ('call', 'method', d["b"]),
+            ('line', 'method', 1),
+            ('line', 'method', 2),
+            ('line', 'method', 3),
+            ('line', 'method', 1),
+            ('call', 'super', 1),
+            ('C raise', 'super', 1),
+            ('line', 'f', 3),
+            ('line', 'f', 4),
+            ('line', 'get_events', 11),
+            ('call', 'set_events', 2),
+        ]
+        return d["f"], expected
+
+    def test_method_call_error(self):
+        nonopt_func, nonopt_expected = self._super_method_call_error(optimized=False)
+        opt_func, opt_expected = self._super_method_call_error(optimized=True)
+
+        self.check_events(nonopt_func, recorders=self.RECORDERS, expected=nonopt_expected)
+        self.check_events(opt_func, recorders=self.RECORDERS, expected=opt_expected)
+
+    def _super_attr(self, optimized=False):
+        codestr = """
+            class A:
+                x = 1
+
+            class B(A):
+                def method(self):
+                    return super(
+                    ).x
+
+            b = B()
+            def f():
+                return b.method()
+        """
+        d = self._exec_super(codestr, optimized)
+        expected = [
+            ('line', 'get_events', 10),
+            ('call', 'f', sys.monitoring.MISSING),
+            ('line', 'f', 1),
+            ('call', 'method', d["b"]),
+            ('line', 'method', 1),
+            ('call', 'super', sys.monitoring.MISSING),
+            ('C return', 'super', sys.monitoring.MISSING),
+            ('line', 'method', 2),
+            ('line', 'method', 1),
+            ('line', 'get_events', 11),
+            ('call', 'set_events', 2)
+        ]
+        return d["f"], expected
+
+    def test_attr(self):
+        nonopt_func, nonopt_expected = self._super_attr(optimized=False)
+        opt_func, opt_expected = self._super_attr(optimized=True)
+
+        self.check_events(nonopt_func, recorders=self.RECORDERS, expected=nonopt_expected)
+        self.check_events(opt_func, recorders=self.RECORDERS, expected=opt_expected)
+
+    def test_vs_other_type_call(self):
+        code_template = textwrap.dedent("""
+            class C:
+                def method(self):
+                    return {cls}().__repr__{call}
+            c = C()
+            def f():
+                return c.method()
+        """)
+
+        def get_expected(name, call_method, ns):
+            repr_arg = 0 if name == "int" else sys.monitoring.MISSING
+            return [
+                ('line', 'get_events', 10),
+                ('call', 'f', sys.monitoring.MISSING),
+                ('line', 'f', 1),
+                ('call', 'method', ns["c"]),
+                ('line', 'method', 1),
+                ('call', name, sys.monitoring.MISSING),
+                ('C return', name, sys.monitoring.MISSING),
+                *(
+                    [
+                        ('call', '__repr__', repr_arg),
+                        ('C return', '__repr__', repr_arg),
+                    ] if call_method else []
+                ),
+                ('line', 'get_events', 11),
+                ('call', 'set_events', 2),
+            ]
+
+        for call_method in [True, False]:
+            with self.subTest(call_method=call_method):
+                call_str = "()" if call_method else ""
+                code_super = code_template.format(cls="super", call=call_str)
+                code_int = code_template.format(cls="int", call=call_str)
+                co_super = compile(code_super, '<string>', 'exec')
+                self.assertTrue(self._has_load_super_attr(co_super))
+                ns_super = self._exec(co_super)
+                ns_int = self._exec(code_int)
+
+                self.check_events(
+                    ns_super["f"],
+                    recorders=self.RECORDERS,
+                    expected=get_expected("super", call_method, ns_super)
+                )
+                self.check_events(
+                    ns_int["f"],
+                    recorders=self.RECORDERS,
+                    expected=get_expected("int", call_method, ns_int)
+                )
+
 
 class TestSetGetEvents(MonitoringTestBase, unittest.TestCase):
 
@@ -1208,3 +1702,116 @@ def f():
 
     def test_get_local_events_uninitialized(self):
         self.assertEqual(sys.monitoring.get_local_events(TEST_TOOL, self.f.__code__), 0)
+
+class TestRegressions(MonitoringTestBase, unittest.TestCase):
+
+    def test_105162(self):
+        caught = None
+
+        def inner():
+            nonlocal caught
+            try:
+                yield
+            except Exception:
+                caught = "inner"
+                yield
+
+        def outer():
+            nonlocal caught
+            try:
+                yield from inner()
+            except Exception:
+                caught = "outer"
+                yield
+
+        def run():
+            gen = outer()
+            gen.send(None)
+            gen.throw(Exception)
+        run()
+        self.assertEqual(caught, "inner")
+        caught = None
+        try:
+            sys.monitoring.set_events(TEST_TOOL, E.PY_RESUME)
+            run()
+            self.assertEqual(caught, "inner")
+        finally:
+            sys.monitoring.set_events(TEST_TOOL, 0)
+
+    def test_108390(self):
+
+        class Foo:
+            def __init__(self, set_event):
+                if set_event:
+                    sys.monitoring.set_events(TEST_TOOL, E.PY_RESUME)
+
+        def make_foo_optimized_then_set_event():
+            for i in range(100):
+                Foo(i == 99)
+
+        try:
+            make_foo_optimized_then_set_event()
+        finally:
+            sys.monitoring.set_events(TEST_TOOL, 0)
+
+    def test_gh108976(self):
+        sys.monitoring.use_tool_id(0, "test")
+        self.addCleanup(sys.monitoring.free_tool_id, 0)
+        sys.monitoring.set_events(0, 0)
+        sys.monitoring.register_callback(0, E.LINE, lambda *args: sys.monitoring.set_events(0, 0))
+        sys.monitoring.register_callback(0, E.INSTRUCTION, lambda *args: 0)
+        sys.monitoring.set_events(0, E.LINE | E.INSTRUCTION)
+        sys.monitoring.set_events(0, 0)
+
+
+class TestOptimizer(MonitoringTestBase, unittest.TestCase):
+
+    def setUp(self):
+        import _testinternalcapi
+        self.old_opt = _testinternalcapi.get_optimizer()
+        opt = _testinternalcapi.get_counter_optimizer()
+        _testinternalcapi.set_optimizer(opt)
+        super(TestOptimizer, self).setUp()
+
+    def tearDown(self):
+        import _testinternalcapi
+        super(TestOptimizer, self).tearDown()
+        _testinternalcapi.set_optimizer(self.old_opt)
+
+    def test_for_loop(self):
+        def test_func(x):
+            i = 0
+            while i < x:
+                i += 1
+
+        code = test_func.__code__
+        sys.monitoring.set_local_events(TEST_TOOL, code, E.PY_START)
+        self.assertEqual(sys.monitoring.get_local_events(TEST_TOOL, code), E.PY_START)
+        test_func(1000)
+        sys.monitoring.set_local_events(TEST_TOOL, code, 0)
+        self.assertEqual(sys.monitoring.get_local_events(TEST_TOOL, code), 0)
+
+class TestTier2Optimizer(CheckEvents):
+
+    def test_monitoring_already_opimized_loop(self):
+        def test_func(recorder):
+            set_events = sys.monitoring.set_events
+            line = E.LINE
+            i = 0
+            for i in range(551):
+                # Turn on events without branching once i reaches 500.
+                set_events(TEST_TOOL, line * int(i >= 500))
+                pass
+                pass
+                pass
+
+        self.assertEqual(sys.monitoring._all_events(), {})
+        events = []
+        recorder = LineRecorder(events)
+        sys.monitoring.register_callback(TEST_TOOL, E.LINE, recorder)
+        try:
+            test_func(recorder)
+        finally:
+            sys.monitoring.register_callback(TEST_TOOL, E.LINE, None)
+            sys.monitoring.set_events(TEST_TOOL, 0)
+        self.assertGreater(len(events), 250)
diff --git a/Lib/test/test_msilib.py b/Lib/test/test_msilib.py
deleted file mode 100644
index db16f62a4c121e..00000000000000
--- a/Lib/test/test_msilib.py
+++ /dev/null
@@ -1,166 +0,0 @@
-""" Test suite for the code in msilib """
-import os
-import unittest
-from test.support.import_helper import import_module
-from test.support.os_helper import TESTFN, unlink
-import warnings
-with warnings.catch_warnings():
-    warnings.simplefilter("ignore", DeprecationWarning)
-    msilib = import_module('msilib')
-import msilib.schema
-
-
-def init_database():
-    path = TESTFN + '.msi'
-    db = msilib.init_database(
-        path,
-        msilib.schema,
-        'Python Tests',
-        'product_code',
-        '1.0',
-        'PSF',
-    )
-    return db, path
-
-
-class MsiDatabaseTestCase(unittest.TestCase):
-
-    def test_view_fetch_returns_none(self):
-        db, db_path = init_database()
-        properties = []
-        view = db.OpenView('SELECT Property, Value FROM Property')
-        view.Execute(None)
-        while True:
-            record = view.Fetch()
-            if record is None:
-                break
-            properties.append(record.GetString(1))
-        view.Close()
-        db.Close()
-        self.assertEqual(
-            properties,
-            [
-                'ProductName', 'ProductCode', 'ProductVersion',
-                'Manufacturer', 'ProductLanguage',
-            ]
-        )
-        self.addCleanup(unlink, db_path)
-
-    def test_view_non_ascii(self):
-        db, db_path = init_database()
-        view = db.OpenView("SELECT 'ß-розпад' FROM Property")
-        view.Execute(None)
-        record = view.Fetch()
-        self.assertEqual(record.GetString(1), 'ß-розпад')
-        view.Close()
-        db.Close()
-        self.addCleanup(unlink, db_path)
-
-    def test_summaryinfo_getproperty_issue1104(self):
-        db, db_path = init_database()
-        try:
-            sum_info = db.GetSummaryInformation(99)
-            title = sum_info.GetProperty(msilib.PID_TITLE)
-            self.assertEqual(title, b"Installation Database")
-
-            sum_info.SetProperty(msilib.PID_TITLE, "a" * 999)
-            title = sum_info.GetProperty(msilib.PID_TITLE)
-            self.assertEqual(title, b"a" * 999)
-
-            sum_info.SetProperty(msilib.PID_TITLE, "a" * 1000)
-            title = sum_info.GetProperty(msilib.PID_TITLE)
-            self.assertEqual(title, b"a" * 1000)
-
-            sum_info.SetProperty(msilib.PID_TITLE, "a" * 1001)
-            title = sum_info.GetProperty(msilib.PID_TITLE)
-            self.assertEqual(title, b"a" * 1001)
-        finally:
-            db = None
-            sum_info = None
-            os.unlink(db_path)
-
-    def test_database_open_failed(self):
-        with self.assertRaises(msilib.MSIError) as cm:
-            msilib.OpenDatabase('non-existent.msi', msilib.MSIDBOPEN_READONLY)
-        self.assertEqual(str(cm.exception), 'open failed')
-
-    def test_database_create_failed(self):
-        db_path = os.path.join(TESTFN, 'test.msi')
-        with self.assertRaises(msilib.MSIError) as cm:
-            msilib.OpenDatabase(db_path, msilib.MSIDBOPEN_CREATE)
-        self.assertEqual(str(cm.exception), 'create failed')
-
-    def test_get_property_vt_empty(self):
-        db, db_path = init_database()
-        summary = db.GetSummaryInformation(0)
-        self.assertIsNone(summary.GetProperty(msilib.PID_SECURITY))
-        db.Close()
-        self.addCleanup(unlink, db_path)
-
-    def test_directory_start_component_keyfile(self):
-        db, db_path = init_database()
-        self.addCleanup(unlink, db_path)
-        self.addCleanup(db.Close)
-        self.addCleanup(msilib._directories.clear)
-        feature = msilib.Feature(db, 0, 'Feature', 'A feature', 'Python')
-        cab = msilib.CAB('CAB')
-        dir = msilib.Directory(db, cab, None, TESTFN, 'TARGETDIR',
-                               'SourceDir', 0)
-        dir.start_component(None, feature, None, 'keyfile')
-
-    def test_getproperty_uninitialized_var(self):
-        db, db_path = init_database()
-        self.addCleanup(unlink, db_path)
-        self.addCleanup(db.Close)
-        si = db.GetSummaryInformation(0)
-        with self.assertRaises(msilib.MSIError):
-            si.GetProperty(-1)
-
-    def test_FCICreate(self):
-        filepath = TESTFN + '.txt'
-        cabpath = TESTFN + '.cab'
-        self.addCleanup(unlink, filepath)
-        with open(filepath, 'wb'):
-            pass
-        self.addCleanup(unlink, cabpath)
-        msilib.FCICreate(cabpath, [(filepath, 'test.txt')])
-        self.assertTrue(os.path.isfile(cabpath))
-
-
-class Test_make_id(unittest.TestCase):
-    #http://msdn.microsoft.com/en-us/library/aa369212(v=vs.85).aspx
-    """The Identifier data type is a text string. Identifiers may contain the
-    ASCII characters A-Z (a-z), digits, underscores (_), or periods (.).
-    However, every identifier must begin with either a letter or an
-    underscore.
-    """
-
-    def test_is_no_change_required(self):
-        self.assertEqual(
-            msilib.make_id("short"), "short")
-        self.assertEqual(
-            msilib.make_id("nochangerequired"), "nochangerequired")
-        self.assertEqual(
-            msilib.make_id("one.dot"), "one.dot")
-        self.assertEqual(
-            msilib.make_id("_"), "_")
-        self.assertEqual(
-            msilib.make_id("a"), "a")
-        #self.assertEqual(
-        #    msilib.make_id(""), "")
-
-    def test_invalid_first_char(self):
-        self.assertEqual(
-            msilib.make_id("9.short"), "_9.short")
-        self.assertEqual(
-            msilib.make_id(".short"), "_.short")
-
-    def test_invalid_any_char(self):
-        self.assertEqual(
-            msilib.make_id(".s\x82ort"), "_.s_ort")
-        self.assertEqual(
-            msilib.make_id(".s\x82o?*+rt"), "_.s_o___rt")
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_msvcrt.py b/Lib/test/test_msvcrt.py
new file mode 100644
index 00000000000000..600c4446fd5cd4
--- /dev/null
+++ b/Lib/test/test_msvcrt.py
@@ -0,0 +1,120 @@
+import os
+import subprocess
+import sys
+import unittest
+from textwrap import dedent
+
+from test.support import os_helper, requires_resource
+from test.support.os_helper import TESTFN, TESTFN_ASCII
+
+if sys.platform != "win32":
+    raise unittest.SkipTest("windows related tests")
+
+import _winapi
+import msvcrt
+
+
+class TestFileOperations(unittest.TestCase):
+    def test_locking(self):
+        with open(TESTFN, "w") as f:
+            self.addCleanup(os_helper.unlink, TESTFN)
+
+            msvcrt.locking(f.fileno(), msvcrt.LK_LOCK, 1)
+            self.assertRaises(OSError, msvcrt.locking, f.fileno(), msvcrt.LK_NBLCK, 1)
+
+    def test_unlockfile(self):
+        with open(TESTFN, "w") as f:
+            self.addCleanup(os_helper.unlink, TESTFN)
+
+            msvcrt.locking(f.fileno(), msvcrt.LK_LOCK, 1)
+            msvcrt.locking(f.fileno(), msvcrt.LK_UNLCK, 1)
+            msvcrt.locking(f.fileno(), msvcrt.LK_LOCK, 1)
+
+    def test_setmode(self):
+        with open(TESTFN, "w") as f:
+            self.addCleanup(os_helper.unlink, TESTFN)
+
+            msvcrt.setmode(f.fileno(), os.O_BINARY)
+            msvcrt.setmode(f.fileno(), os.O_TEXT)
+
+    def test_open_osfhandle(self):
+        h = _winapi.CreateFile(TESTFN_ASCII, _winapi.GENERIC_WRITE, 0, 0, 1, 128, 0)
+        self.addCleanup(os_helper.unlink, TESTFN_ASCII)
+
+        try:
+            fd = msvcrt.open_osfhandle(h, os.O_RDONLY)
+            h = None
+            os.close(fd)
+        finally:
+            if h:
+                _winapi.CloseHandle(h)
+
+    def test_get_osfhandle(self):
+        with open(TESTFN, "w") as f:
+            self.addCleanup(os_helper.unlink, TESTFN)
+
+            msvcrt.get_osfhandle(f.fileno())
+
+
+c = '\u5b57'  # unicode CJK char (meaning 'character') for 'wide-char' tests
+c_encoded = b'\x57\x5b' # utf-16-le (which windows internally used) encoded char for this CJK char
+
+
+class TestConsoleIO(unittest.TestCase):
+    # CREATE_NEW_CONSOLE creates a "popup" window.
+    @requires_resource('gui')
+    def run_in_separated_process(self, code):
+        # Run test in a seprated process to avoid stdin conflicts.
+        # See: gh-110147
+        cmd = [sys.executable, '-c', code]
+        subprocess.run(cmd, check=True, capture_output=True,
+                       creationflags=subprocess.CREATE_NEW_CONSOLE)
+
+    def test_kbhit(self):
+        code = dedent('''
+            import msvcrt
+            assert msvcrt.kbhit() == 0
+        ''')
+        self.run_in_separated_process(code)
+
+    def test_getch(self):
+        msvcrt.ungetch(b'c')
+        self.assertEqual(msvcrt.getch(), b'c')
+
+    def check_getwch(self, funcname):
+        code = dedent(f'''
+            import msvcrt
+            from _testconsole import write_input
+            with open("CONIN$", "rb", buffering=0) as stdin:
+                write_input(stdin, {ascii(c_encoded)})
+                assert msvcrt.{funcname}() == "{c}"
+        ''')
+        self.run_in_separated_process(code)
+
+    def test_getwch(self):
+        self.check_getwch('getwch')
+
+    def test_getche(self):
+        msvcrt.ungetch(b'c')
+        self.assertEqual(msvcrt.getche(), b'c')
+
+    def test_getwche(self):
+        self.check_getwch('getwche')
+
+    def test_putch(self):
+        msvcrt.putch(b'c')
+
+    def test_putwch(self):
+        msvcrt.putwch(c)
+
+
+class TestOther(unittest.TestCase):
+    def test_heap_min(self):
+        try:
+            msvcrt.heapmin()
+        except OSError:
+            pass
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_multibytecodec.py b/Lib/test/test_multibytecodec.py
index cf8bb5e3a0520d..6451df14696933 100644
--- a/Lib/test/test_multibytecodec.py
+++ b/Lib/test/test_multibytecodec.py
@@ -363,6 +363,7 @@ def test_iso2022_jp_g0(self):
             e = '\u3406'.encode(encoding)
             self.assertFalse(any(x > 0x80 for x in e))
 
+    @support.requires_resource('cpu')
     def test_bug1572832(self):
         for x in range(0x10000, 0x110000):
             # Any ISO 2022 codec will cause the segfault
diff --git a/Lib/test/test_multiprocessing_fork.py b/Lib/test/test_multiprocessing_fork.py
deleted file mode 100644
index 5000edb7c5c299..00000000000000
--- a/Lib/test/test_multiprocessing_fork.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import unittest
-import test._test_multiprocessing
-
-import sys
-from test import support
-
-if support.PGO:
-    raise unittest.SkipTest("test is not helpful for PGO")
-
-if sys.platform == "win32":
-    raise unittest.SkipTest("fork is not available on Windows")
-
-if sys.platform == 'darwin':
-    raise unittest.SkipTest("test may crash on macOS (bpo-33725)")
-
-test._test_multiprocessing.install_tests_in_module_dict(globals(), 'fork')
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_multiprocessing_fork/__init__.py b/Lib/test/test_multiprocessing_fork/__init__.py
new file mode 100644
index 00000000000000..aa1fff50b28f5f
--- /dev/null
+++ b/Lib/test/test_multiprocessing_fork/__init__.py
@@ -0,0 +1,16 @@
+import os.path
+import sys
+import unittest
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
+if sys.platform == "win32":
+    raise unittest.SkipTest("fork is not available on Windows")
+
+if sys.platform == 'darwin':
+    raise unittest.SkipTest("test may crash on macOS (bpo-33725)")
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_multiprocessing_fork/test_manager.py b/Lib/test/test_multiprocessing_fork/test_manager.py
new file mode 100644
index 00000000000000..9efbb83bbb73bf
--- /dev/null
+++ b/Lib/test/test_multiprocessing_fork/test_manager.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'fork', only_type="manager")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_fork/test_misc.py b/Lib/test/test_multiprocessing_fork/test_misc.py
new file mode 100644
index 00000000000000..891a494020c3a1
--- /dev/null
+++ b/Lib/test/test_multiprocessing_fork/test_misc.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'fork', exclude_types=True)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_fork/test_processes.py b/Lib/test/test_multiprocessing_fork/test_processes.py
new file mode 100644
index 00000000000000..e64e9afc0100e8
--- /dev/null
+++ b/Lib/test/test_multiprocessing_fork/test_processes.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'fork', only_type="processes")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_fork/test_threads.py b/Lib/test/test_multiprocessing_fork/test_threads.py
new file mode 100644
index 00000000000000..1670e34cb17f25
--- /dev/null
+++ b/Lib/test/test_multiprocessing_fork/test_threads.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'fork', only_type="threads")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_forkserver.py b/Lib/test/test_multiprocessing_forkserver.py
deleted file mode 100644
index 6ad5faf9e8a329..00000000000000
--- a/Lib/test/test_multiprocessing_forkserver.py
+++ /dev/null
@@ -1,16 +0,0 @@
-import unittest
-import test._test_multiprocessing
-
-import sys
-from test import support
-
-if support.PGO:
-    raise unittest.SkipTest("test is not helpful for PGO")
-
-if sys.platform == "win32":
-    raise unittest.SkipTest("forkserver is not available on Windows")
-
-test._test_multiprocessing.install_tests_in_module_dict(globals(), 'forkserver')
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_multiprocessing_forkserver/__init__.py b/Lib/test/test_multiprocessing_forkserver/__init__.py
new file mode 100644
index 00000000000000..d91715a344dfa7
--- /dev/null
+++ b/Lib/test/test_multiprocessing_forkserver/__init__.py
@@ -0,0 +1,13 @@
+import os.path
+import sys
+import unittest
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
+if sys.platform == "win32":
+    raise unittest.SkipTest("forkserver is not available on Windows")
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_multiprocessing_forkserver/test_manager.py b/Lib/test/test_multiprocessing_forkserver/test_manager.py
new file mode 100644
index 00000000000000..14f8f10dfb4e2f
--- /dev/null
+++ b/Lib/test/test_multiprocessing_forkserver/test_manager.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'forkserver', only_type="manager")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_forkserver/test_misc.py b/Lib/test/test_multiprocessing_forkserver/test_misc.py
new file mode 100644
index 00000000000000..9cae1b50f71e00
--- /dev/null
+++ b/Lib/test/test_multiprocessing_forkserver/test_misc.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'forkserver', exclude_types=True)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_forkserver/test_processes.py b/Lib/test/test_multiprocessing_forkserver/test_processes.py
new file mode 100644
index 00000000000000..360967cf1ae152
--- /dev/null
+++ b/Lib/test/test_multiprocessing_forkserver/test_processes.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'forkserver', only_type="processes")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_forkserver/test_threads.py b/Lib/test/test_multiprocessing_forkserver/test_threads.py
new file mode 100644
index 00000000000000..719c752aa05350
--- /dev/null
+++ b/Lib/test/test_multiprocessing_forkserver/test_threads.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'forkserver', only_type="threads")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn.py b/Lib/test/test_multiprocessing_spawn.py
deleted file mode 100644
index 6558952308f25c..00000000000000
--- a/Lib/test/test_multiprocessing_spawn.py
+++ /dev/null
@@ -1,12 +0,0 @@
-import unittest
-import test._test_multiprocessing
-
-from test import support
-
-if support.PGO:
-    raise unittest.SkipTest("test is not helpful for PGO")
-
-test._test_multiprocessing.install_tests_in_module_dict(globals(), 'spawn')
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/__init__.py b/Lib/test/test_multiprocessing_spawn/__init__.py
new file mode 100644
index 00000000000000..3fd0f9b390612a
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/__init__.py
@@ -0,0 +1,9 @@
+import os.path
+import unittest
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_multiprocessing_spawn/test_manager.py b/Lib/test/test_multiprocessing_spawn/test_manager.py
new file mode 100644
index 00000000000000..b40bea0bf61581
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_manager.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', only_type="manager")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/test_misc.py b/Lib/test/test_multiprocessing_spawn/test_misc.py
new file mode 100644
index 00000000000000..32f37c5cc81ee1
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_misc.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', exclude_types=True)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/test_processes.py b/Lib/test/test_multiprocessing_spawn/test_processes.py
new file mode 100644
index 00000000000000..af764b0d8483ab
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_processes.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', only_type="processes")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/test_threads.py b/Lib/test/test_multiprocessing_spawn/test_threads.py
new file mode 100644
index 00000000000000..c1257749b9c419
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_threads.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', only_type="threads")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_netrc.py b/Lib/test/test_netrc.py
index 573d636de956d1..81e11a293cc4c8 100644
--- a/Lib/test/test_netrc.py
+++ b/Lib/test/test_netrc.py
@@ -1,5 +1,5 @@
 import netrc, os, unittest, sys, textwrap
-from test.support import os_helper, run_unittest
+from test.support import os_helper
 
 try:
     import pwd
@@ -308,8 +308,6 @@ def test_security(self):
             self.assertEqual(nrc.hosts['foo.domain.com'],
                              ('anonymous', '', 'pass'))
 
-def test_main():
-    run_unittest(NetrcTestCase)
 
 if __name__ == "__main__":
-    test_main()
+    unittest.main()
diff --git a/Lib/test/test_nis.py b/Lib/test/test_nis.py
deleted file mode 100644
index f327ecf3d1de45..00000000000000
--- a/Lib/test/test_nis.py
+++ /dev/null
@@ -1,43 +0,0 @@
-from test.support import import_helper
-import unittest
-import warnings
-
-
-# Skip test if nis module does not exist.
-with warnings.catch_warnings():
-    warnings.simplefilter("ignore", DeprecationWarning)
-    nis = import_helper.import_module('nis')
-
-
-class NisTests(unittest.TestCase):
-    def test_maps(self):
-        try:
-            maps = nis.maps()
-        except nis.error as msg:
-            # NIS is probably not active, so this test isn't useful
-            self.skipTest(str(msg))
-        try:
-            # On some systems, this map is only accessible to the
-            # super user
-            maps.remove("passwd.adjunct.byname")
-        except ValueError:
-            pass
-
-        done = 0
-        for nismap in maps:
-            mapping = nis.cat(nismap)
-            for k, v in mapping.items():
-                if not k:
-                    continue
-                if nis.match(k, nismap) != v:
-                    self.fail("NIS match failed for key `%s' in map `%s'" % (k, nismap))
-                else:
-                    # just test the one key, otherwise this test could take a
-                    # very long time
-                    done = 1
-                    break
-            if done:
-                break
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_nntplib.py b/Lib/test/test_nntplib.py
deleted file mode 100644
index 31a02f86abb003..00000000000000
--- a/Lib/test/test_nntplib.py
+++ /dev/null
@@ -1,1646 +0,0 @@
-import io
-import socket
-import datetime
-import textwrap
-import unittest
-import functools
-import contextlib
-import os.path
-import re
-import threading
-
-from test import support
-from test.support import socket_helper, warnings_helper
-nntplib = warnings_helper.import_deprecated("nntplib")
-from nntplib import NNTP, GroupInfo
-from unittest.mock import patch
-try:
-    import ssl
-except ImportError:
-    ssl = None
-
-
-certfile = os.path.join(os.path.dirname(__file__), 'keycert3.pem')
-
-if ssl is not None:
-    SSLError = ssl.SSLError
-else:
-    class SSLError(Exception):
-        """Non-existent exception class when we lack SSL support."""
-        reason = "This will never be raised."
-
-# TODO:
-# - test the `file` arg to more commands
-# - test error conditions
-# - test auth and `usenetrc`
-
-
-class NetworkedNNTPTestsMixin:
-
-    ssl_context = None
-
-    def test_welcome(self):
-        welcome = self.server.getwelcome()
-        self.assertEqual(str, type(welcome))
-
-    def test_help(self):
-        resp, lines = self.server.help()
-        self.assertTrue(resp.startswith("100 "), resp)
-        for line in lines:
-            self.assertEqual(str, type(line))
-
-    def test_list(self):
-        resp, groups = self.server.list()
-        if len(groups) > 0:
-            self.assertEqual(GroupInfo, type(groups[0]))
-            self.assertEqual(str, type(groups[0].group))
-
-    def test_list_active(self):
-        resp, groups = self.server.list(self.GROUP_PAT)
-        if len(groups) > 0:
-            self.assertEqual(GroupInfo, type(groups[0]))
-            self.assertEqual(str, type(groups[0].group))
-
-    def test_unknown_command(self):
-        with self.assertRaises(nntplib.NNTPPermanentError) as cm:
-            self.server._shortcmd("XYZZY")
-        resp = cm.exception.response
-        self.assertTrue(resp.startswith("500 "), resp)
-
-    def test_newgroups(self):
-        # gmane gets a constant influx of new groups.  In order not to stress
-        # the server too much, we choose a recent date in the past.
-        dt = datetime.date.today() - datetime.timedelta(days=7)
-        resp, groups = self.server.newgroups(dt)
-        if len(groups) > 0:
-            self.assertIsInstance(groups[0], GroupInfo)
-            self.assertIsInstance(groups[0].group, str)
-
-    def test_description(self):
-        def _check_desc(desc):
-            # Sanity checks
-            self.assertIsInstance(desc, str)
-            self.assertNotIn(self.GROUP_NAME, desc)
-        desc = self.server.description(self.GROUP_NAME)
-        _check_desc(desc)
-        # Another sanity check
-        self.assertIn(self.DESC, desc)
-        # With a pattern
-        desc = self.server.description(self.GROUP_PAT)
-        _check_desc(desc)
-        # Shouldn't exist
-        desc = self.server.description("zk.brrtt.baz")
-        self.assertEqual(desc, '')
-
-    def test_descriptions(self):
-        resp, descs = self.server.descriptions(self.GROUP_PAT)
-        # 215 for LIST NEWSGROUPS, 282 for XGTITLE
-        self.assertTrue(
-            resp.startswith("215 ") or resp.startswith("282 "), resp)
-        self.assertIsInstance(descs, dict)
-        desc = descs[self.GROUP_NAME]
-        self.assertEqual(desc, self.server.description(self.GROUP_NAME))
-
-    def test_group(self):
-        result = self.server.group(self.GROUP_NAME)
-        self.assertEqual(5, len(result))
-        resp, count, first, last, group = result
-        self.assertEqual(group, self.GROUP_NAME)
-        self.assertIsInstance(count, int)
-        self.assertIsInstance(first, int)
-        self.assertIsInstance(last, int)
-        self.assertLessEqual(first, last)
-        self.assertTrue(resp.startswith("211 "), resp)
-
-    def test_date(self):
-        resp, date = self.server.date()
-        self.assertIsInstance(date, datetime.datetime)
-        # Sanity check
-        self.assertGreaterEqual(date.year, 1995)
-        self.assertLessEqual(date.year, 2030)
-
-    def _check_art_dict(self, art_dict):
-        # Some sanity checks for a field dictionary returned by OVER / XOVER
-        self.assertIsInstance(art_dict, dict)
-        # NNTP has 7 mandatory fields
-        self.assertGreaterEqual(art_dict.keys(),
-            {"subject", "from", "date", "message-id",
-             "references", ":bytes", ":lines"}
-            )
-        for v in art_dict.values():
-            self.assertIsInstance(v, (str, type(None)))
-
-    def test_xover(self):
-        resp, count, first, last, name = self.server.group(self.GROUP_NAME)
-        resp, lines = self.server.xover(last - 5, last)
-        if len(lines) == 0:
-            self.skipTest("no articles retrieved")
-        # The 'last' article is not necessarily part of the output (cancelled?)
-        art_num, art_dict = lines[0]
-        self.assertGreaterEqual(art_num, last - 5)
-        self.assertLessEqual(art_num, last)
-        self._check_art_dict(art_dict)
-
-    @unittest.skipIf(True, 'temporarily skipped until a permanent solution'
-                           ' is found for issue #28971')
-    def test_over(self):
-        resp, count, first, last, name = self.server.group(self.GROUP_NAME)
-        start = last - 10
-        # The "start-" article range form
-        resp, lines = self.server.over((start, None))
-        art_num, art_dict = lines[0]
-        self._check_art_dict(art_dict)
-        # The "start-end" article range form
-        resp, lines = self.server.over((start, last))
-        art_num, art_dict = lines[-1]
-        # The 'last' article is not necessarily part of the output (cancelled?)
-        self.assertGreaterEqual(art_num, start)
-        self.assertLessEqual(art_num, last)
-        self._check_art_dict(art_dict)
-        # XXX The "message_id" form is unsupported by gmane
-        # 503 Overview by message-ID unsupported
-
-    def test_xhdr(self):
-        resp, count, first, last, name = self.server.group(self.GROUP_NAME)
-        resp, lines = self.server.xhdr('subject', last)
-        for line in lines:
-            self.assertEqual(str, type(line[1]))
-
-    def check_article_resp(self, resp, article, art_num=None):
-        self.assertIsInstance(article, nntplib.ArticleInfo)
-        if art_num is not None:
-            self.assertEqual(article.number, art_num)
-        for line in article.lines:
-            self.assertIsInstance(line, bytes)
-        # XXX this could exceptionally happen...
-        self.assertNotIn(article.lines[-1], (b".", b".\n", b".\r\n"))
-
-    @unittest.skipIf(True, "FIXME: see bpo-32128")
-    def test_article_head_body(self):
-        resp, count, first, last, name = self.server.group(self.GROUP_NAME)
-        # Try to find an available article
-        for art_num in (last, first, last - 1):
-            try:
-                resp, head = self.server.head(art_num)
-            except nntplib.NNTPTemporaryError as e:
-                if not e.response.startswith("423 "):
-                    raise
-                # "423 No such article" => choose another one
-                continue
-            break
-        else:
-            self.skipTest("could not find a suitable article number")
-        self.assertTrue(resp.startswith("221 "), resp)
-        self.check_article_resp(resp, head, art_num)
-        resp, body = self.server.body(art_num)
-        self.assertTrue(resp.startswith("222 "), resp)
-        self.check_article_resp(resp, body, art_num)
-        resp, article = self.server.article(art_num)
-        self.assertTrue(resp.startswith("220 "), resp)
-        self.check_article_resp(resp, article, art_num)
-        # Tolerate running the tests from behind a NNTP virus checker
-        denylist = lambda line: line.startswith(b'X-Antivirus')
-        filtered_head_lines = [line for line in head.lines
-                               if not denylist(line)]
-        filtered_lines = [line for line in article.lines
-                          if not denylist(line)]
-        self.assertEqual(filtered_lines, filtered_head_lines + [b''] + body.lines)
-
-    def test_capabilities(self):
-        # The server under test implements NNTP version 2 and has a
-        # couple of well-known capabilities. Just sanity check that we
-        # got them.
-        def _check_caps(caps):
-            caps_list = caps['LIST']
-            self.assertIsInstance(caps_list, (list, tuple))
-            self.assertIn('OVERVIEW.FMT', caps_list)
-        self.assertGreaterEqual(self.server.nntp_version, 2)
-        _check_caps(self.server.getcapabilities())
-        # This re-emits the command
-        resp, caps = self.server.capabilities()
-        _check_caps(caps)
-
-    def test_zlogin(self):
-        # This test must be the penultimate because further commands will be
-        # refused.
-        baduser = "notarealuser"
-        badpw = "notarealpassword"
-        # Check that bogus credentials cause failure
-        self.assertRaises(nntplib.NNTPError, self.server.login,
-                          user=baduser, password=badpw, usenetrc=False)
-        # FIXME: We should check that correct credentials succeed, but that
-        # would require valid details for some server somewhere to be in the
-        # test suite, I think. Gmane is anonymous, at least as used for the
-        # other tests.
-
-    def test_zzquit(self):
-        # This test must be called last, hence the name
-        cls = type(self)
-        try:
-            self.server.quit()
-        finally:
-            cls.server = None
-
-    @classmethod
-    def wrap_methods(cls):
-        # Wrap all methods in a transient_internet() exception catcher
-        # XXX put a generic version in test.support?
-        def wrap_meth(meth):
-            @functools.wraps(meth)
-            def wrapped(self):
-                with socket_helper.transient_internet(self.NNTP_HOST):
-                    meth(self)
-            return wrapped
-        for name in dir(cls):
-            if not name.startswith('test_'):
-                continue
-            meth = getattr(cls, name)
-            if not callable(meth):
-                continue
-            # Need to use a closure so that meth remains bound to its current
-            # value
-            setattr(cls, name, wrap_meth(meth))
-
-    def test_timeout(self):
-        with self.assertRaises(ValueError):
-            self.NNTP_CLASS(self.NNTP_HOST, timeout=0, usenetrc=False)
-
-    def test_with_statement(self):
-        def is_connected():
-            if not hasattr(server, 'file'):
-                return False
-            try:
-                server.help()
-            except (OSError, EOFError):
-                return False
-            return True
-
-        kwargs = dict(
-            timeout=support.INTERNET_TIMEOUT,
-            usenetrc=False
-        )
-        if self.ssl_context is not None:
-            kwargs["ssl_context"] = self.ssl_context
-
-        try:
-            server = self.NNTP_CLASS(self.NNTP_HOST, **kwargs)
-            with server:
-                self.assertTrue(is_connected())
-                self.assertTrue(server.help())
-            self.assertFalse(is_connected())
-
-            server = self.NNTP_CLASS(self.NNTP_HOST, **kwargs)
-            with server:
-                server.quit()
-            self.assertFalse(is_connected())
-        except SSLError as ssl_err:
-            # matches "[SSL: DH_KEY_TOO_SMALL] dh key too small"
-            if re.search(r'(?i)KEY.TOO.SMALL', ssl_err.reason):
-                raise unittest.SkipTest(f"Got {ssl_err} connecting "
-                                        f"to {self.NNTP_HOST!r}")
-            raise
-
-
-NetworkedNNTPTestsMixin.wrap_methods()
-
-
-EOF_ERRORS = (EOFError,)
-if ssl is not None:
-    EOF_ERRORS += (ssl.SSLEOFError,)
-
-
-class NetworkedNNTPTests(NetworkedNNTPTestsMixin, unittest.TestCase):
-    # This server supports STARTTLS (gmane doesn't)
-    NNTP_HOST = 'news.trigofacile.com'
-    GROUP_NAME = 'fr.comp.lang.python'
-    GROUP_PAT = 'fr.comp.lang.*'
-    DESC = 'Python'
-
-    NNTP_CLASS = NNTP
-
-    @classmethod
-    def setUpClass(cls):
-        support.requires("network")
-        kwargs = dict(
-            timeout=support.INTERNET_TIMEOUT,
-            usenetrc=False
-        )
-        if cls.ssl_context is not None:
-            kwargs["ssl_context"] = cls.ssl_context
-        with socket_helper.transient_internet(cls.NNTP_HOST):
-            try:
-                cls.server = cls.NNTP_CLASS(cls.NNTP_HOST, **kwargs)
-            except SSLError as ssl_err:
-                # matches "[SSL: DH_KEY_TOO_SMALL] dh key too small"
-                if re.search(r'(?i)KEY.TOO.SMALL', ssl_err.reason):
-                    raise unittest.SkipTest(f"{cls} got {ssl_err} connecting "
-                                            f"to {cls.NNTP_HOST!r}")
-                print(cls.NNTP_HOST)
-                raise
-            except EOF_ERRORS:
-                raise unittest.SkipTest(f"{cls} got EOF error on connecting "
-                                        f"to {cls.NNTP_HOST!r}")
-
-    @classmethod
-    def tearDownClass(cls):
-        if cls.server is not None:
-            cls.server.quit()
-
-@unittest.skipUnless(ssl, 'requires SSL support')
-class NetworkedNNTP_SSLTests(NetworkedNNTPTests):
-
-    # Technical limits for this public NNTP server (see http://www.aioe.org):
-    # "Only two concurrent connections per IP address are allowed and
-    # 400 connections per day are accepted from each IP address."
-
-    NNTP_HOST = 'nntp.aioe.org'
-    # bpo-42794: aioe.test is one of the official groups on this server
-    # used for testing: https://news.aioe.org/manual/aioe-hierarchy/
-    GROUP_NAME = 'aioe.test'
-    GROUP_PAT = 'aioe.*'
-    DESC = 'test'
-
-    NNTP_CLASS = getattr(nntplib, 'NNTP_SSL', None)
-
-    # Disabled as it produces too much data
-    test_list = None
-
-    # Disabled as the connection will already be encrypted.
-    test_starttls = None
-
-    if ssl is not None:
-        ssl_context = ssl._create_unverified_context()
-        ssl_context.set_ciphers("DEFAULT")
-        ssl_context.maximum_version = ssl.TLSVersion.TLSv1_2
-
-#
-# Non-networked tests using a local server (or something mocking it).
-#
-
-class _NNTPServerIO(io.RawIOBase):
-    """A raw IO object allowing NNTP commands to be received and processed
-    by a handler.  The handler can push responses which can then be read
-    from the IO object."""
-
-    def __init__(self, handler):
-        io.RawIOBase.__init__(self)
-        # The channel from the client
-        self.c2s = io.BytesIO()
-        # The channel to the client
-        self.s2c = io.BytesIO()
-        self.handler = handler
-        self.handler.start(self.c2s.readline, self.push_data)
-
-    def readable(self):
-        return True
-
-    def writable(self):
-        return True
-
-    def push_data(self, data):
-        """Push (buffer) some data to send to the client."""
-        pos = self.s2c.tell()
-        self.s2c.seek(0, 2)
-        self.s2c.write(data)
-        self.s2c.seek(pos)
-
-    def write(self, b):
-        """The client sends us some data"""
-        pos = self.c2s.tell()
-        self.c2s.write(b)
-        self.c2s.seek(pos)
-        self.handler.process_pending()
-        return len(b)
-
-    def readinto(self, buf):
-        """The client wants to read a response"""
-        self.handler.process_pending()
-        b = self.s2c.read(len(buf))
-        n = len(b)
-        buf[:n] = b
-        return n
-
-
-def make_mock_file(handler):
-    sio = _NNTPServerIO(handler)
-    # Using BufferedRWPair instead of BufferedRandom ensures the file
-    # isn't seekable.
-    file = io.BufferedRWPair(sio, sio)
-    return (sio, file)
-
-
-class NNTPServer(nntplib.NNTP):
-
-    def __init__(self, f, host, readermode=None):
-        self.file = f
-        self.host = host
-        self._base_init(readermode)
-
-    def _close(self):
-        self.file.close()
-        del self.file
-
-
-class MockedNNTPTestsMixin:
-    # Override in derived classes
-    handler_class = None
-
-    def setUp(self):
-        super().setUp()
-        self.make_server()
-
-    def tearDown(self):
-        super().tearDown()
-        del self.server
-
-    def make_server(self, *args, **kwargs):
-        self.handler = self.handler_class()
-        self.sio, file = make_mock_file(self.handler)
-        self.server = NNTPServer(file, 'test.server', *args, **kwargs)
-        return self.server
-
-
-class MockedNNTPWithReaderModeMixin(MockedNNTPTestsMixin):
-    def setUp(self):
-        super().setUp()
-        self.make_server(readermode=True)
-
-
-class NNTPv1Handler:
-    """A handler for RFC 977"""
-
-    welcome = "200 NNTP mock server"
-
-    def start(self, readline, push_data):
-        self.in_body = False
-        self.allow_posting = True
-        self._readline = readline
-        self._push_data = push_data
-        self._logged_in = False
-        self._user_sent = False
-        # Our welcome
-        self.handle_welcome()
-
-    def _decode(self, data):
-        return str(data, "utf-8", "surrogateescape")
-
-    def process_pending(self):
-        if self.in_body:
-            while True:
-                line = self._readline()
-                if not line:
-                    return
-                self.body.append(line)
-                if line == b".\r\n":
-                    break
-            try:
-                meth, tokens = self.body_callback
-                meth(*tokens, body=self.body)
-            finally:
-                self.body_callback = None
-                self.body = None
-                self.in_body = False
-        while True:
-            line = self._decode(self._readline())
-            if not line:
-                return
-            if not line.endswith("\r\n"):
-                raise ValueError("line doesn't end with \\r\\n: {!r}".format(line))
-            line = line[:-2]
-            cmd, *tokens = line.split()
-            #meth = getattr(self.handler, "handle_" + cmd.upper(), None)
-            meth = getattr(self, "handle_" + cmd.upper(), None)
-            if meth is None:
-                self.handle_unknown()
-            else:
-                try:
-                    meth(*tokens)
-                except Exception as e:
-                    raise ValueError("command failed: {!r}".format(line)) from e
-                else:
-                    if self.in_body:
-                        self.body_callback = meth, tokens
-                        self.body = []
-
-    def expect_body(self):
-        """Flag that the client is expected to post a request body"""
-        self.in_body = True
-
-    def push_data(self, data):
-        """Push some binary data"""
-        self._push_data(data)
-
-    def push_lit(self, lit):
-        """Push a string literal"""
-        lit = textwrap.dedent(lit)
-        lit = "\r\n".join(lit.splitlines()) + "\r\n"
-        lit = lit.encode('utf-8')
-        self.push_data(lit)
-
-    def handle_unknown(self):
-        self.push_lit("500 What?")
-
-    def handle_welcome(self):
-        self.push_lit(self.welcome)
-
-    def handle_QUIT(self):
-        self.push_lit("205 Bye!")
-
-    def handle_DATE(self):
-        self.push_lit("111 20100914001155")
-
-    def handle_GROUP(self, group):
-        if group == "fr.comp.lang.python":
-            self.push_lit("211 486 761 1265 fr.comp.lang.python")
-        else:
-            self.push_lit("411 No such group {}".format(group))
-
-    def handle_HELP(self):
-        self.push_lit("""\
-            100 Legal commands
-              authinfo user Name|pass Password|generic <prog> <args>
-              date
-              help
-            Report problems to <root@example.org>
-            .""")
-
-    def handle_STAT(self, message_spec=None):
-        if message_spec is None:
-            self.push_lit("412 No newsgroup selected")
-        elif message_spec == "3000234":
-            self.push_lit("223 3000234 <45223423@example.com>")
-        elif message_spec == "<45223423@example.com>":
-            self.push_lit("223 0 <45223423@example.com>")
-        else:
-            self.push_lit("430 No Such Article Found")
-
-    def handle_NEXT(self):
-        self.push_lit("223 3000237 <668929@example.org> retrieved")
-
-    def handle_LAST(self):
-        self.push_lit("223 3000234 <45223423@example.com> retrieved")
-
-    def handle_LIST(self, action=None, param=None):
-        if action is None:
-            self.push_lit("""\
-                215 Newsgroups in form "group high low flags".
-                comp.lang.python 0000052340 0000002828 y
-                comp.lang.python.announce 0000001153 0000000993 m
-                free.it.comp.lang.python 0000000002 0000000002 y
-                fr.comp.lang.python 0000001254 0000000760 y
-                free.it.comp.lang.python.learner 0000000000 0000000001 y
-                tw.bbs.comp.lang.python 0000000304 0000000304 y
-                .""")
-        elif action == "ACTIVE":
-            if param == "*distutils*":
-                self.push_lit("""\
-                    215 Newsgroups in form "group high low flags"
-                    gmane.comp.python.distutils.devel 0000014104 0000000001 m
-                    gmane.comp.python.distutils.cvs 0000000000 0000000001 m
-                    .""")
-            else:
-                self.push_lit("""\
-                    215 Newsgroups in form "group high low flags"
-                    .""")
-        elif action == "OVERVIEW.FMT":
-            self.push_lit("""\
-                215 Order of fields in overview database.
-                Subject:
-                From:
-                Date:
-                Message-ID:
-                References:
-                Bytes:
-                Lines:
-                Xref:full
-                .""")
-        elif action == "NEWSGROUPS":
-            assert param is not None
-            if param == "comp.lang.python":
-                self.push_lit("""\
-                    215 Descriptions in form "group description".
-                    comp.lang.python\tThe Python computer language.
-                    .""")
-            elif param == "comp.lang.python*":
-                self.push_lit("""\
-                    215 Descriptions in form "group description".
-                    comp.lang.python.announce\tAnnouncements about the Python language. (Moderated)
-                    comp.lang.python\tThe Python computer language.
-                    .""")
-            else:
-                self.push_lit("""\
-                    215 Descriptions in form "group description".
-                    .""")
-        else:
-            self.push_lit('501 Unknown LIST keyword')
-
-    def handle_NEWNEWS(self, group, date_str, time_str):
-        # We hard code different return messages depending on passed
-        # argument and date syntax.
-        if (group == "comp.lang.python" and date_str == "20100913"
-            and time_str == "082004"):
-            # Date was passed in RFC 3977 format (NNTP "v2")
-            self.push_lit("""\
-                230 list of newsarticles (NNTP v2) created after Mon Sep 13 08:20:04 2010 follows
-                <a4929a40-6328-491a-aaaf-cb79ed7309a2@q2g2000vbk.googlegroups.com>
-                <f30c0419-f549-4218-848f-d7d0131da931@y3g2000vbm.googlegroups.com>
-                .""")
-        elif (group == "comp.lang.python" and date_str == "100913"
-            and time_str == "082004"):
-            # Date was passed in RFC 977 format (NNTP "v1")
-            self.push_lit("""\
-                230 list of newsarticles (NNTP v1) created after Mon Sep 13 08:20:04 2010 follows
-                <a4929a40-6328-491a-aaaf-cb79ed7309a2@q2g2000vbk.googlegroups.com>
-                <f30c0419-f549-4218-848f-d7d0131da931@y3g2000vbm.googlegroups.com>
-                .""")
-        elif (group == 'comp.lang.python' and
-              date_str in ('20100101', '100101') and
-              time_str == '090000'):
-            self.push_lit('too long line' * 3000 +
-                          '\n.')
-        else:
-            self.push_lit("""\
-                230 An empty list of newsarticles follows
-                .""")
-        # (Note for experiments: many servers disable NEWNEWS.
-        #  As of this writing, sicinfo3.epfl.ch doesn't.)
-
-    def handle_XOVER(self, message_spec):
-        if message_spec == "57-59":
-            self.push_lit(
-                "224 Overview information for 57-58 follows\n"
-                "57\tRe: ANN: New Plone book with strong Python (and Zope) themes throughout"
-                    "\tDoug Hellmann <doug.hellmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>"
-                    "\tSat, 19 Jun 2010 18:04:08 -0400"
-                    "\t<4FD05F05-F98B-44DC-8111-C6009C925F0C@gmail.com>"
-                    "\t<hvalf7$ort$1@dough.gmane.org>\t7103\t16"
-                    "\tXref: news.gmane.io gmane.comp.python.authors:57"
-                    "\n"
-                "58\tLooking for a few good bloggers"
-                    "\tDoug Hellmann <doug.hellmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>"
-                    "\tThu, 22 Jul 2010 09:14:14 -0400"
-                    "\t<A29863FA-F388-40C3-AA25-0FD06B09B5BF@gmail.com>"
-                    "\t\t6683\t16"
-                    "\t"
-                    "\n"
-                # A UTF-8 overview line from fr.comp.lang.python
-                "59\tRe: Message d'erreur incompréhensible (par moi)"
-                    "\tEric Brunel <eric.brunel@pragmadev.nospam.com>"
-                    "\tWed, 15 Sep 2010 18:09:15 +0200"
-                    "\t<eric.brunel-2B8B56.18091515092010@news.wanadoo.fr>"
-                    "\t<4c90ec87$0$32425$ba4acef3@reader.news.orange.fr>\t1641\t27"
-                    "\tXref: saria.nerim.net fr.comp.lang.python:1265"
-                    "\n"
-                ".\n")
-        else:
-            self.push_lit("""\
-                224 No articles
-                .""")
-
-    def handle_POST(self, *, body=None):
-        if body is None:
-            if self.allow_posting:
-                self.push_lit("340 Input article; end with <CR-LF>.<CR-LF>")
-                self.expect_body()
-            else:
-                self.push_lit("440 Posting not permitted")
-        else:
-            assert self.allow_posting
-            self.push_lit("240 Article received OK")
-            self.posted_body = body
-
-    def handle_IHAVE(self, message_id, *, body=None):
-        if body is None:
-            if (self.allow_posting and
-                message_id == "<i.am.an.article.you.will.want@example.com>"):
-                self.push_lit("335 Send it; end with <CR-LF>.<CR-LF>")
-                self.expect_body()
-            else:
-                self.push_lit("435 Article not wanted")
-        else:
-            assert self.allow_posting
-            self.push_lit("235 Article transferred OK")
-            self.posted_body = body
-
-    sample_head = """\
-        From: "Demo User" <nobody@example.net>
-        Subject: I am just a test article
-        Content-Type: text/plain; charset=UTF-8; format=flowed
-        Message-ID: <i.am.an.article.you.will.want@example.com>"""
-
-    sample_body = """\
-        This is just a test article.
-        ..Here is a dot-starting line.
-
-        -- Signed by Andr\xe9."""
-
-    sample_article = sample_head + "\n\n" + sample_body
-
-    def handle_ARTICLE(self, message_spec=None):
-        if message_spec is None:
-            self.push_lit("220 3000237 <45223423@example.com>")
-        elif message_spec == "<45223423@example.com>":
-            self.push_lit("220 0 <45223423@example.com>")
-        elif message_spec == "3000234":
-            self.push_lit("220 3000234 <45223423@example.com>")
-        else:
-            self.push_lit("430 No Such Article Found")
-            return
-        self.push_lit(self.sample_article)
-        self.push_lit(".")
-
-    def handle_HEAD(self, message_spec=None):
-        if message_spec is None:
-            self.push_lit("221 3000237 <45223423@example.com>")
-        elif message_spec == "<45223423@example.com>":
-            self.push_lit("221 0 <45223423@example.com>")
-        elif message_spec == "3000234":
-            self.push_lit("221 3000234 <45223423@example.com>")
-        else:
-            self.push_lit("430 No Such Article Found")
-            return
-        self.push_lit(self.sample_head)
-        self.push_lit(".")
-
-    def handle_BODY(self, message_spec=None):
-        if message_spec is None:
-            self.push_lit("222 3000237 <45223423@example.com>")
-        elif message_spec == "<45223423@example.com>":
-            self.push_lit("222 0 <45223423@example.com>")
-        elif message_spec == "3000234":
-            self.push_lit("222 3000234 <45223423@example.com>")
-        else:
-            self.push_lit("430 No Such Article Found")
-            return
-        self.push_lit(self.sample_body)
-        self.push_lit(".")
-
-    def handle_AUTHINFO(self, cred_type, data):
-        if self._logged_in:
-            self.push_lit('502 Already Logged In')
-        elif cred_type == 'user':
-            if self._user_sent:
-                self.push_lit('482 User Credential Already Sent')
-            else:
-                self.push_lit('381 Password Required')
-                self._user_sent = True
-        elif cred_type == 'pass':
-            self.push_lit('281 Login Successful')
-            self._logged_in = True
-        else:
-            raise Exception('Unknown cred type {}'.format(cred_type))
-
-
-class NNTPv2Handler(NNTPv1Handler):
-    """A handler for RFC 3977 (NNTP "v2")"""
-
-    def handle_CAPABILITIES(self):
-        fmt = """\
-            101 Capability list:
-            VERSION 2 3
-            IMPLEMENTATION INN 2.5.1{}
-            HDR
-            LIST ACTIVE ACTIVE.TIMES DISTRIB.PATS HEADERS NEWSGROUPS OVERVIEW.FMT
-            OVER
-            POST
-            READER
-            ."""
-
-        if not self._logged_in:
-            self.push_lit(fmt.format('\n            AUTHINFO USER'))
-        else:
-            self.push_lit(fmt.format(''))
-
-    def handle_MODE(self, _):
-        raise Exception('MODE READER sent despite READER has been advertised')
-
-    def handle_OVER(self, message_spec=None):
-        return self.handle_XOVER(message_spec)
-
-
-class CapsAfterLoginNNTPv2Handler(NNTPv2Handler):
-    """A handler that allows CAPABILITIES only after login"""
-
-    def handle_CAPABILITIES(self):
-        if not self._logged_in:
-            self.push_lit('480 You must log in.')
-        else:
-            super().handle_CAPABILITIES()
-
-
-class ModeSwitchingNNTPv2Handler(NNTPv2Handler):
-    """A server that starts in transit mode"""
-
-    def __init__(self):
-        self._switched = False
-
-    def handle_CAPABILITIES(self):
-        fmt = """\
-            101 Capability list:
-            VERSION 2 3
-            IMPLEMENTATION INN 2.5.1
-            HDR
-            LIST ACTIVE ACTIVE.TIMES DISTRIB.PATS HEADERS NEWSGROUPS OVERVIEW.FMT
-            OVER
-            POST
-            {}READER
-            ."""
-        if self._switched:
-            self.push_lit(fmt.format(''))
-        else:
-            self.push_lit(fmt.format('MODE-'))
-
-    def handle_MODE(self, what):
-        assert not self._switched and what == 'reader'
-        self._switched = True
-        self.push_lit('200 Posting allowed')
-
-
-class NNTPv1v2TestsMixin:
-
-    def setUp(self):
-        super().setUp()
-
-    def test_welcome(self):
-        self.assertEqual(self.server.welcome, self.handler.welcome)
-
-    def test_authinfo(self):
-        if self.nntp_version == 2:
-            self.assertIn('AUTHINFO', self.server._caps)
-        self.server.login('testuser', 'testpw')
-        # if AUTHINFO is gone from _caps we also know that getcapabilities()
-        # has been called after login as it should
-        self.assertNotIn('AUTHINFO', self.server._caps)
-
-    def test_date(self):
-        resp, date = self.server.date()
-        self.assertEqual(resp, "111 20100914001155")
-        self.assertEqual(date, datetime.datetime(2010, 9, 14, 0, 11, 55))
-
-    def test_quit(self):
-        self.assertFalse(self.sio.closed)
-        resp = self.server.quit()
-        self.assertEqual(resp, "205 Bye!")
-        self.assertTrue(self.sio.closed)
-
-    def test_help(self):
-        resp, help = self.server.help()
-        self.assertEqual(resp, "100 Legal commands")
-        self.assertEqual(help, [
-            '  authinfo user Name|pass Password|generic <prog> <args>',
-            '  date',
-            '  help',
-            'Report problems to <root@example.org>',
-        ])
-
-    def test_list(self):
-        resp, groups = self.server.list()
-        self.assertEqual(len(groups), 6)
-        g = groups[1]
-        self.assertEqual(g,
-            GroupInfo("comp.lang.python.announce", "0000001153",
-                      "0000000993", "m"))
-        resp, groups = self.server.list("*distutils*")
-        self.assertEqual(len(groups), 2)
-        g = groups[0]
-        self.assertEqual(g,
-            GroupInfo("gmane.comp.python.distutils.devel", "0000014104",
-                      "0000000001", "m"))
-
-    def test_stat(self):
-        resp, art_num, message_id = self.server.stat(3000234)
-        self.assertEqual(resp, "223 3000234 <45223423@example.com>")
-        self.assertEqual(art_num, 3000234)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        resp, art_num, message_id = self.server.stat("<45223423@example.com>")
-        self.assertEqual(resp, "223 0 <45223423@example.com>")
-        self.assertEqual(art_num, 0)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.stat("<non.existent.id>")
-        self.assertEqual(cm.exception.response, "430 No Such Article Found")
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.stat()
-        self.assertEqual(cm.exception.response, "412 No newsgroup selected")
-
-    def test_next(self):
-        resp, art_num, message_id = self.server.next()
-        self.assertEqual(resp, "223 3000237 <668929@example.org> retrieved")
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<668929@example.org>")
-
-    def test_last(self):
-        resp, art_num, message_id = self.server.last()
-        self.assertEqual(resp, "223 3000234 <45223423@example.com> retrieved")
-        self.assertEqual(art_num, 3000234)
-        self.assertEqual(message_id, "<45223423@example.com>")
-
-    def test_description(self):
-        desc = self.server.description("comp.lang.python")
-        self.assertEqual(desc, "The Python computer language.")
-        desc = self.server.description("comp.lang.pythonx")
-        self.assertEqual(desc, "")
-
-    def test_descriptions(self):
-        resp, groups = self.server.descriptions("comp.lang.python")
-        self.assertEqual(resp, '215 Descriptions in form "group description".')
-        self.assertEqual(groups, {
-            "comp.lang.python": "The Python computer language.",
-            })
-        resp, groups = self.server.descriptions("comp.lang.python*")
-        self.assertEqual(groups, {
-            "comp.lang.python": "The Python computer language.",
-            "comp.lang.python.announce": "Announcements about the Python language. (Moderated)",
-            })
-        resp, groups = self.server.descriptions("comp.lang.pythonx")
-        self.assertEqual(groups, {})
-
-    def test_group(self):
-        resp, count, first, last, group = self.server.group("fr.comp.lang.python")
-        self.assertTrue(resp.startswith("211 "), resp)
-        self.assertEqual(first, 761)
-        self.assertEqual(last, 1265)
-        self.assertEqual(count, 486)
-        self.assertEqual(group, "fr.comp.lang.python")
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.group("comp.lang.python.devel")
-        exc = cm.exception
-        self.assertTrue(exc.response.startswith("411 No such group"),
-                        exc.response)
-
-    def test_newnews(self):
-        # NEWNEWS comp.lang.python [20]100913 082004
-        dt = datetime.datetime(2010, 9, 13, 8, 20, 4)
-        resp, ids = self.server.newnews("comp.lang.python", dt)
-        expected = (
-            "230 list of newsarticles (NNTP v{0}) "
-            "created after Mon Sep 13 08:20:04 2010 follows"
-            ).format(self.nntp_version)
-        self.assertEqual(resp, expected)
-        self.assertEqual(ids, [
-            "<a4929a40-6328-491a-aaaf-cb79ed7309a2@q2g2000vbk.googlegroups.com>",
-            "<f30c0419-f549-4218-848f-d7d0131da931@y3g2000vbm.googlegroups.com>",
-            ])
-        # NEWNEWS fr.comp.lang.python [20]100913 082004
-        dt = datetime.datetime(2010, 9, 13, 8, 20, 4)
-        resp, ids = self.server.newnews("fr.comp.lang.python", dt)
-        self.assertEqual(resp, "230 An empty list of newsarticles follows")
-        self.assertEqual(ids, [])
-
-    def _check_article_body(self, lines):
-        self.assertEqual(len(lines), 4)
-        self.assertEqual(lines[-1].decode('utf-8'), "-- Signed by André.")
-        self.assertEqual(lines[-2], b"")
-        self.assertEqual(lines[-3], b".Here is a dot-starting line.")
-        self.assertEqual(lines[-4], b"This is just a test article.")
-
-    def _check_article_head(self, lines):
-        self.assertEqual(len(lines), 4)
-        self.assertEqual(lines[0], b'From: "Demo User" <nobody@example.net>')
-        self.assertEqual(lines[3], b"Message-ID: <i.am.an.article.you.will.want@example.com>")
-
-    def _check_article_data(self, lines):
-        self.assertEqual(len(lines), 9)
-        self._check_article_head(lines[:4])
-        self._check_article_body(lines[-4:])
-        self.assertEqual(lines[4], b"")
-
-    def test_article(self):
-        # ARTICLE
-        resp, info = self.server.article()
-        self.assertEqual(resp, "220 3000237 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_data(lines)
-        # ARTICLE num
-        resp, info = self.server.article(3000234)
-        self.assertEqual(resp, "220 3000234 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000234)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_data(lines)
-        # ARTICLE id
-        resp, info = self.server.article("<45223423@example.com>")
-        self.assertEqual(resp, "220 0 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 0)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_data(lines)
-        # Non-existent id
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.article("<non-existent@example.com>")
-        self.assertEqual(cm.exception.response, "430 No Such Article Found")
-
-    def test_article_file(self):
-        # With a "file" argument
-        f = io.BytesIO()
-        resp, info = self.server.article(file=f)
-        self.assertEqual(resp, "220 3000237 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self.assertEqual(lines, [])
-        data = f.getvalue()
-        self.assertTrue(data.startswith(
-            b'From: "Demo User" <nobody@example.net>\r\n'
-            b'Subject: I am just a test article\r\n'
-            ), ascii(data))
-        self.assertTrue(data.endswith(
-            b'This is just a test article.\r\n'
-            b'.Here is a dot-starting line.\r\n'
-            b'\r\n'
-            b'-- Signed by Andr\xc3\xa9.\r\n'
-            ), ascii(data))
-
-    def test_head(self):
-        # HEAD
-        resp, info = self.server.head()
-        self.assertEqual(resp, "221 3000237 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_head(lines)
-        # HEAD num
-        resp, info = self.server.head(3000234)
-        self.assertEqual(resp, "221 3000234 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000234)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_head(lines)
-        # HEAD id
-        resp, info = self.server.head("<45223423@example.com>")
-        self.assertEqual(resp, "221 0 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 0)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_head(lines)
-        # Non-existent id
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.head("<non-existent@example.com>")
-        self.assertEqual(cm.exception.response, "430 No Such Article Found")
-
-    def test_head_file(self):
-        f = io.BytesIO()
-        resp, info = self.server.head(file=f)
-        self.assertEqual(resp, "221 3000237 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self.assertEqual(lines, [])
-        data = f.getvalue()
-        self.assertTrue(data.startswith(
-            b'From: "Demo User" <nobody@example.net>\r\n'
-            b'Subject: I am just a test article\r\n'
-            ), ascii(data))
-        self.assertFalse(data.endswith(
-            b'This is just a test article.\r\n'
-            b'.Here is a dot-starting line.\r\n'
-            b'\r\n'
-            b'-- Signed by Andr\xc3\xa9.\r\n'
-            ), ascii(data))
-
-    def test_body(self):
-        # BODY
-        resp, info = self.server.body()
-        self.assertEqual(resp, "222 3000237 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_body(lines)
-        # BODY num
-        resp, info = self.server.body(3000234)
-        self.assertEqual(resp, "222 3000234 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000234)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_body(lines)
-        # BODY id
-        resp, info = self.server.body("<45223423@example.com>")
-        self.assertEqual(resp, "222 0 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 0)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self._check_article_body(lines)
-        # Non-existent id
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.body("<non-existent@example.com>")
-        self.assertEqual(cm.exception.response, "430 No Such Article Found")
-
-    def test_body_file(self):
-        f = io.BytesIO()
-        resp, info = self.server.body(file=f)
-        self.assertEqual(resp, "222 3000237 <45223423@example.com>")
-        art_num, message_id, lines = info
-        self.assertEqual(art_num, 3000237)
-        self.assertEqual(message_id, "<45223423@example.com>")
-        self.assertEqual(lines, [])
-        data = f.getvalue()
-        self.assertFalse(data.startswith(
-            b'From: "Demo User" <nobody@example.net>\r\n'
-            b'Subject: I am just a test article\r\n'
-            ), ascii(data))
-        self.assertTrue(data.endswith(
-            b'This is just a test article.\r\n'
-            b'.Here is a dot-starting line.\r\n'
-            b'\r\n'
-            b'-- Signed by Andr\xc3\xa9.\r\n'
-            ), ascii(data))
-
-    def check_over_xover_resp(self, resp, overviews):
-        self.assertTrue(resp.startswith("224 "), resp)
-        self.assertEqual(len(overviews), 3)
-        art_num, over = overviews[0]
-        self.assertEqual(art_num, 57)
-        self.assertEqual(over, {
-            "from": "Doug Hellmann <doug.hellmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>",
-            "subject": "Re: ANN: New Plone book with strong Python (and Zope) themes throughout",
-            "date": "Sat, 19 Jun 2010 18:04:08 -0400",
-            "message-id": "<4FD05F05-F98B-44DC-8111-C6009C925F0C@gmail.com>",
-            "references": "<hvalf7$ort$1@dough.gmane.org>",
-            ":bytes": "7103",
-            ":lines": "16",
-            "xref": "news.gmane.io gmane.comp.python.authors:57"
-            })
-        art_num, over = overviews[1]
-        self.assertEqual(over["xref"], None)
-        art_num, over = overviews[2]
-        self.assertEqual(over["subject"],
-                         "Re: Message d'erreur incompréhensible (par moi)")
-
-    def test_xover(self):
-        resp, overviews = self.server.xover(57, 59)
-        self.check_over_xover_resp(resp, overviews)
-
-    def test_over(self):
-        # In NNTP "v1", this will fallback on XOVER
-        resp, overviews = self.server.over((57, 59))
-        self.check_over_xover_resp(resp, overviews)
-
-    sample_post = (
-        b'From: "Demo User" <nobody@example.net>\r\n'
-        b'Subject: I am just a test article\r\n'
-        b'Content-Type: text/plain; charset=UTF-8; format=flowed\r\n'
-        b'Message-ID: <i.am.an.article.you.will.want@example.com>\r\n'
-        b'\r\n'
-        b'This is just a test article.\r\n'
-        b'.Here is a dot-starting line.\r\n'
-        b'\r\n'
-        b'-- Signed by Andr\xc3\xa9.\r\n'
-    )
-
-    def _check_posted_body(self):
-        # Check the raw body as received by the server
-        lines = self.handler.posted_body
-        # One additional line for the "." terminator
-        self.assertEqual(len(lines), 10)
-        self.assertEqual(lines[-1], b'.\r\n')
-        self.assertEqual(lines[-2], b'-- Signed by Andr\xc3\xa9.\r\n')
-        self.assertEqual(lines[-3], b'\r\n')
-        self.assertEqual(lines[-4], b'..Here is a dot-starting line.\r\n')
-        self.assertEqual(lines[0], b'From: "Demo User" <nobody@example.net>\r\n')
-
-    def _check_post_ihave_sub(self, func, *args, file_factory):
-        # First the prepared post with CRLF endings
-        post = self.sample_post
-        func_args = args + (file_factory(post),)
-        self.handler.posted_body = None
-        resp = func(*func_args)
-        self._check_posted_body()
-        # Then the same post with "normal" line endings - they should be
-        # converted by NNTP.post and NNTP.ihave.
-        post = self.sample_post.replace(b"\r\n", b"\n")
-        func_args = args + (file_factory(post),)
-        self.handler.posted_body = None
-        resp = func(*func_args)
-        self._check_posted_body()
-        return resp
-
-    def check_post_ihave(self, func, success_resp, *args):
-        # With a bytes object
-        resp = self._check_post_ihave_sub(func, *args, file_factory=bytes)
-        self.assertEqual(resp, success_resp)
-        # With a bytearray object
-        resp = self._check_post_ihave_sub(func, *args, file_factory=bytearray)
-        self.assertEqual(resp, success_resp)
-        # With a file object
-        resp = self._check_post_ihave_sub(func, *args, file_factory=io.BytesIO)
-        self.assertEqual(resp, success_resp)
-        # With an iterable of terminated lines
-        def iterlines(b):
-            return iter(b.splitlines(keepends=True))
-        resp = self._check_post_ihave_sub(func, *args, file_factory=iterlines)
-        self.assertEqual(resp, success_resp)
-        # With an iterable of non-terminated lines
-        def iterlines(b):
-            return iter(b.splitlines(keepends=False))
-        resp = self._check_post_ihave_sub(func, *args, file_factory=iterlines)
-        self.assertEqual(resp, success_resp)
-
-    def test_post(self):
-        self.check_post_ihave(self.server.post, "240 Article received OK")
-        self.handler.allow_posting = False
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.post(self.sample_post)
-        self.assertEqual(cm.exception.response,
-                         "440 Posting not permitted")
-
-    def test_ihave(self):
-        self.check_post_ihave(self.server.ihave, "235 Article transferred OK",
-                              "<i.am.an.article.you.will.want@example.com>")
-        with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
-            self.server.ihave("<another.message.id>", self.sample_post)
-        self.assertEqual(cm.exception.response,
-                         "435 Article not wanted")
-
-    def test_too_long_lines(self):
-        dt = datetime.datetime(2010, 1, 1, 9, 0, 0)
-        self.assertRaises(nntplib.NNTPDataError,
-                          self.server.newnews, "comp.lang.python", dt)
-
-
-class NNTPv1Tests(NNTPv1v2TestsMixin, MockedNNTPTestsMixin, unittest.TestCase):
-    """Tests an NNTP v1 server (no capabilities)."""
-
-    nntp_version = 1
-    handler_class = NNTPv1Handler
-
-    def test_caps(self):
-        caps = self.server.getcapabilities()
-        self.assertEqual(caps, {})
-        self.assertEqual(self.server.nntp_version, 1)
-        self.assertEqual(self.server.nntp_implementation, None)
-
-
-class NNTPv2Tests(NNTPv1v2TestsMixin, MockedNNTPTestsMixin, unittest.TestCase):
-    """Tests an NNTP v2 server (with capabilities)."""
-
-    nntp_version = 2
-    handler_class = NNTPv2Handler
-
-    def test_caps(self):
-        caps = self.server.getcapabilities()
-        self.assertEqual(caps, {
-            'VERSION': ['2', '3'],
-            'IMPLEMENTATION': ['INN', '2.5.1'],
-            'AUTHINFO': ['USER'],
-            'HDR': [],
-            'LIST': ['ACTIVE', 'ACTIVE.TIMES', 'DISTRIB.PATS',
-                     'HEADERS', 'NEWSGROUPS', 'OVERVIEW.FMT'],
-            'OVER': [],
-            'POST': [],
-            'READER': [],
-            })
-        self.assertEqual(self.server.nntp_version, 3)
-        self.assertEqual(self.server.nntp_implementation, 'INN 2.5.1')
-
-
-class CapsAfterLoginNNTPv2Tests(MockedNNTPTestsMixin, unittest.TestCase):
-    """Tests a probably NNTP v2 server with capabilities only after login."""
-
-    nntp_version = 2
-    handler_class = CapsAfterLoginNNTPv2Handler
-
-    def test_caps_only_after_login(self):
-        self.assertEqual(self.server._caps, {})
-        self.server.login('testuser', 'testpw')
-        self.assertIn('VERSION', self.server._caps)
-
-
-class SendReaderNNTPv2Tests(MockedNNTPWithReaderModeMixin,
-        unittest.TestCase):
-    """Same tests as for v2 but we tell NTTP to send MODE READER to a server
-    that isn't in READER mode by default."""
-
-    nntp_version = 2
-    handler_class = ModeSwitchingNNTPv2Handler
-
-    def test_we_are_in_reader_mode_after_connect(self):
-        self.assertIn('READER', self.server._caps)
-
-
-class MiscTests(unittest.TestCase):
-
-    def test_decode_header(self):
-        def gives(a, b):
-            self.assertEqual(nntplib.decode_header(a), b)
-        gives("" , "")
-        gives("a plain header", "a plain header")
-        gives(" with extra  spaces ", " with extra  spaces ")
-        gives("=?ISO-8859-15?Q?D=E9buter_en_Python?=", "Débuter en Python")
-        gives("=?utf-8?q?Re=3A_=5Bsqlite=5D_probl=C3=A8me_avec_ORDER_BY_sur_des_cha?="
-              " =?utf-8?q?=C3=AEnes_de_caract=C3=A8res_accentu=C3=A9es?=",
-              "Re: [sqlite] problème avec ORDER BY sur des chaînes de caractères accentuées")
-        gives("Re: =?UTF-8?B?cHJvYmzDqG1lIGRlIG1hdHJpY2U=?=",
-              "Re: problème de matrice")
-        # A natively utf-8 header (found in the real world!)
-        gives("Re: Message d'erreur incompréhensible (par moi)",
-              "Re: Message d'erreur incompréhensible (par moi)")
-
-    def test_parse_overview_fmt(self):
-        # The minimal (default) response
-        lines = ["Subject:", "From:", "Date:", "Message-ID:",
-                 "References:", ":bytes", ":lines"]
-        self.assertEqual(nntplib._parse_overview_fmt(lines),
-            ["subject", "from", "date", "message-id", "references",
-             ":bytes", ":lines"])
-        # The minimal response using alternative names
-        lines = ["Subject:", "From:", "Date:", "Message-ID:",
-                 "References:", "Bytes:", "Lines:"]
-        self.assertEqual(nntplib._parse_overview_fmt(lines),
-            ["subject", "from", "date", "message-id", "references",
-             ":bytes", ":lines"])
-        # Variations in casing
-        lines = ["subject:", "FROM:", "DaTe:", "message-ID:",
-                 "References:", "BYTES:", "Lines:"]
-        self.assertEqual(nntplib._parse_overview_fmt(lines),
-            ["subject", "from", "date", "message-id", "references",
-             ":bytes", ":lines"])
-        # First example from RFC 3977
-        lines = ["Subject:", "From:", "Date:", "Message-ID:",
-                 "References:", ":bytes", ":lines", "Xref:full",
-                 "Distribution:full"]
-        self.assertEqual(nntplib._parse_overview_fmt(lines),
-            ["subject", "from", "date", "message-id", "references",
-             ":bytes", ":lines", "xref", "distribution"])
-        # Second example from RFC 3977
-        lines = ["Subject:", "From:", "Date:", "Message-ID:",
-                 "References:", "Bytes:", "Lines:", "Xref:FULL",
-                 "Distribution:FULL"]
-        self.assertEqual(nntplib._parse_overview_fmt(lines),
-            ["subject", "from", "date", "message-id", "references",
-             ":bytes", ":lines", "xref", "distribution"])
-        # A classic response from INN
-        lines = ["Subject:", "From:", "Date:", "Message-ID:",
-                 "References:", "Bytes:", "Lines:", "Xref:full"]
-        self.assertEqual(nntplib._parse_overview_fmt(lines),
-            ["subject", "from", "date", "message-id", "references",
-             ":bytes", ":lines", "xref"])
-
-    def test_parse_overview(self):
-        fmt = nntplib._DEFAULT_OVERVIEW_FMT + ["xref"]
-        # First example from RFC 3977
-        lines = [
-            '3000234\tI am just a test article\t"Demo User" '
-            '<nobody@example.com>\t6 Oct 1998 04:38:40 -0500\t'
-            '<45223423@example.com>\t<45454@example.net>\t1234\t'
-            '17\tXref: news.example.com misc.test:3000363',
-        ]
-        overview = nntplib._parse_overview(lines, fmt)
-        (art_num, fields), = overview
-        self.assertEqual(art_num, 3000234)
-        self.assertEqual(fields, {
-            'subject': 'I am just a test article',
-            'from': '"Demo User" <nobody@example.com>',
-            'date': '6 Oct 1998 04:38:40 -0500',
-            'message-id': '<45223423@example.com>',
-            'references': '<45454@example.net>',
-            ':bytes': '1234',
-            ':lines': '17',
-            'xref': 'news.example.com misc.test:3000363',
-        })
-        # Second example; here the "Xref" field is totally absent (including
-        # the header name) and comes out as None
-        lines = [
-            '3000234\tI am just a test article\t"Demo User" '
-            '<nobody@example.com>\t6 Oct 1998 04:38:40 -0500\t'
-            '<45223423@example.com>\t<45454@example.net>\t1234\t'
-            '17\t\t',
-        ]
-        overview = nntplib._parse_overview(lines, fmt)
-        (art_num, fields), = overview
-        self.assertEqual(fields['xref'], None)
-        # Third example; the "Xref" is an empty string, while "references"
-        # is a single space.
-        lines = [
-            '3000234\tI am just a test article\t"Demo User" '
-            '<nobody@example.com>\t6 Oct 1998 04:38:40 -0500\t'
-            '<45223423@example.com>\t \t1234\t'
-            '17\tXref: \t',
-        ]
-        overview = nntplib._parse_overview(lines, fmt)
-        (art_num, fields), = overview
-        self.assertEqual(fields['references'], ' ')
-        self.assertEqual(fields['xref'], '')
-
-    def test_parse_datetime(self):
-        def gives(a, b, *c):
-            self.assertEqual(nntplib._parse_datetime(a, b),
-                             datetime.datetime(*c))
-        # Output of DATE command
-        gives("19990623135624", None, 1999, 6, 23, 13, 56, 24)
-        # Variations
-        gives("19990623", "135624", 1999, 6, 23, 13, 56, 24)
-        gives("990623", "135624", 1999, 6, 23, 13, 56, 24)
-        gives("090623", "135624", 2009, 6, 23, 13, 56, 24)
-
-    def test_unparse_datetime(self):
-        # Test non-legacy mode
-        # 1) with a datetime
-        def gives(y, M, d, h, m, s, date_str, time_str):
-            dt = datetime.datetime(y, M, d, h, m, s)
-            self.assertEqual(nntplib._unparse_datetime(dt),
-                             (date_str, time_str))
-            self.assertEqual(nntplib._unparse_datetime(dt, False),
-                             (date_str, time_str))
-        gives(1999, 6, 23, 13, 56, 24, "19990623", "135624")
-        gives(2000, 6, 23, 13, 56, 24, "20000623", "135624")
-        gives(2010, 6, 5, 1, 2, 3, "20100605", "010203")
-        # 2) with a date
-        def gives(y, M, d, date_str, time_str):
-            dt = datetime.date(y, M, d)
-            self.assertEqual(nntplib._unparse_datetime(dt),
-                             (date_str, time_str))
-            self.assertEqual(nntplib._unparse_datetime(dt, False),
-                             (date_str, time_str))
-        gives(1999, 6, 23, "19990623", "000000")
-        gives(2000, 6, 23, "20000623", "000000")
-        gives(2010, 6, 5, "20100605", "000000")
-
-    def test_unparse_datetime_legacy(self):
-        # Test legacy mode (RFC 977)
-        # 1) with a datetime
-        def gives(y, M, d, h, m, s, date_str, time_str):
-            dt = datetime.datetime(y, M, d, h, m, s)
-            self.assertEqual(nntplib._unparse_datetime(dt, True),
-                             (date_str, time_str))
-        gives(1999, 6, 23, 13, 56, 24, "990623", "135624")
-        gives(2000, 6, 23, 13, 56, 24, "000623", "135624")
-        gives(2010, 6, 5, 1, 2, 3, "100605", "010203")
-        # 2) with a date
-        def gives(y, M, d, date_str, time_str):
-            dt = datetime.date(y, M, d)
-            self.assertEqual(nntplib._unparse_datetime(dt, True),
-                             (date_str, time_str))
-        gives(1999, 6, 23, "990623", "000000")
-        gives(2000, 6, 23, "000623", "000000")
-        gives(2010, 6, 5, "100605", "000000")
-
-    @unittest.skipUnless(ssl, 'requires SSL support')
-    def test_ssl_support(self):
-        self.assertTrue(hasattr(nntplib, 'NNTP_SSL'))
-
-
-class PublicAPITests(unittest.TestCase):
-    """Ensures that the correct values are exposed in the public API."""
-
-    def test_module_all_attribute(self):
-        self.assertTrue(hasattr(nntplib, '__all__'))
-        target_api = ['NNTP', 'NNTPError', 'NNTPReplyError',
-                      'NNTPTemporaryError', 'NNTPPermanentError',
-                      'NNTPProtocolError', 'NNTPDataError', 'decode_header']
-        if ssl is not None:
-            target_api.append('NNTP_SSL')
-        self.assertEqual(set(nntplib.__all__), set(target_api))
-
-class MockSocketTests(unittest.TestCase):
-    """Tests involving a mock socket object
-
-    Used where the _NNTPServerIO file object is not enough."""
-
-    nntp_class = nntplib.NNTP
-
-    def check_constructor_error_conditions(
-            self, handler_class,
-            expected_error_type, expected_error_msg,
-            login=None, password=None):
-
-        class mock_socket_module:
-            def create_connection(address, timeout):
-                return MockSocket()
-
-        class MockSocket:
-            def close(self):
-                nonlocal socket_closed
-                socket_closed = True
-
-            def makefile(socket, mode):
-                handler = handler_class()
-                _, file = make_mock_file(handler)
-                files.append(file)
-                return file
-
-        socket_closed = False
-        files = []
-        with patch('nntplib.socket', mock_socket_module), \
-             self.assertRaisesRegex(expected_error_type, expected_error_msg):
-            self.nntp_class('dummy', user=login, password=password)
-        self.assertTrue(socket_closed)
-        for f in files:
-            self.assertTrue(f.closed)
-
-    def test_bad_welcome(self):
-        #Test a bad welcome message
-        class Handler(NNTPv1Handler):
-            welcome = 'Bad Welcome'
-        self.check_constructor_error_conditions(
-            Handler, nntplib.NNTPProtocolError, Handler.welcome)
-
-    def test_service_temporarily_unavailable(self):
-        #Test service temporarily unavailable
-        class Handler(NNTPv1Handler):
-            welcome = '400 Service temporarily unavailable'
-        self.check_constructor_error_conditions(
-            Handler, nntplib.NNTPTemporaryError, Handler.welcome)
-
-    def test_service_permanently_unavailable(self):
-        #Test service permanently unavailable
-        class Handler(NNTPv1Handler):
-            welcome = '502 Service permanently unavailable'
-        self.check_constructor_error_conditions(
-            Handler, nntplib.NNTPPermanentError, Handler.welcome)
-
-    def test_bad_capabilities(self):
-        #Test a bad capabilities response
-        class Handler(NNTPv1Handler):
-            def handle_CAPABILITIES(self):
-                self.push_lit(capabilities_response)
-        capabilities_response = '201 bad capability'
-        self.check_constructor_error_conditions(
-            Handler, nntplib.NNTPReplyError, capabilities_response)
-
-    def test_login_aborted(self):
-        #Test a bad authinfo response
-        login = 't@e.com'
-        password = 'python'
-        class Handler(NNTPv1Handler):
-            def handle_AUTHINFO(self, *args):
-                self.push_lit(authinfo_response)
-        authinfo_response = '503 Mechanism not recognized'
-        self.check_constructor_error_conditions(
-            Handler, nntplib.NNTPPermanentError, authinfo_response,
-            login, password)
-
-class bypass_context:
-    """Bypass encryption and actual SSL module"""
-    def wrap_socket(sock, **args):
-        return sock
-
-@unittest.skipUnless(ssl, 'requires SSL support')
-class MockSslTests(MockSocketTests):
-    @staticmethod
-    def nntp_class(*pos, **kw):
-        return nntplib.NNTP_SSL(*pos, ssl_context=bypass_context, **kw)
-
-
-class LocalServerTests(unittest.TestCase):
-    def setUp(self):
-        sock = socket.socket()
-        port = socket_helper.bind_port(sock)
-        sock.listen()
-        self.background = threading.Thread(
-            target=self.run_server, args=(sock,))
-        self.background.start()
-        self.addCleanup(self.background.join)
-
-        self.nntp = self.enterContext(NNTP(socket_helper.HOST, port, usenetrc=False))
-
-    def run_server(self, sock):
-        # Could be generalized to handle more commands in separate methods
-        with sock:
-            [client, _] = sock.accept()
-        with contextlib.ExitStack() as cleanup:
-            cleanup.enter_context(client)
-            reader = cleanup.enter_context(client.makefile('rb'))
-            client.sendall(b'200 Server ready\r\n')
-            while True:
-                cmd = reader.readline()
-                if cmd == b'CAPABILITIES\r\n':
-                    client.sendall(
-                        b'101 Capability list:\r\n'
-                        b'VERSION 2\r\n'
-                        b'STARTTLS\r\n'
-                        b'.\r\n'
-                    )
-                elif cmd == b'STARTTLS\r\n':
-                    reader.close()
-                    client.sendall(b'382 Begin TLS negotiation now\r\n')
-                    context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
-                    context.load_cert_chain(certfile)
-                    client = context.wrap_socket(
-                        client, server_side=True)
-                    cleanup.enter_context(client)
-                    reader = cleanup.enter_context(client.makefile('rb'))
-                elif cmd == b'QUIT\r\n':
-                    client.sendall(b'205 Bye!\r\n')
-                    break
-                else:
-                    raise ValueError('Unexpected command {!r}'.format(cmd))
-
-    @unittest.skipUnless(ssl, 'requires SSL support')
-    def test_starttls(self):
-        file = self.nntp.file
-        sock = self.nntp.sock
-        self.nntp.starttls()
-        # Check that the socket and internal pseudo-file really were
-        # changed.
-        self.assertNotEqual(file, self.nntp.file)
-        self.assertNotEqual(sock, self.nntp.sock)
-        # Check that the new socket really is an SSL one
-        self.assertIsInstance(self.nntp.sock, ssl.SSLSocket)
-        # Check that trying starttls when it's already active fails.
-        self.assertRaises(ValueError, self.nntp.starttls)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_ntpath.py b/Lib/test/test_ntpath.py
index 0e57c165ca98ea..bf990ed36fbcae 100644
--- a/Lib/test/test_ntpath.py
+++ b/Lib/test/test_ntpath.py
@@ -2,6 +2,7 @@
 import ntpath
 import os
 import string
+import subprocess
 import sys
 import unittest
 import warnings
@@ -255,6 +256,7 @@ def test_join(self):
         tester('ntpath.join("a", "b", "c")', 'a\\b\\c')
         tester('ntpath.join("a\\", "b", "c")', 'a\\b\\c')
         tester('ntpath.join("a", "b\\", "c")', 'a\\b\\c')
+        tester('ntpath.join("a", "b", "c\\")', 'a\\b\\c\\')
         tester('ntpath.join("a", "b", "\\c")', '\\c')
         tester('ntpath.join("d:\\", "\\pleep")', 'd:\\pleep')
         tester('ntpath.join("d:\\", "a", "b")', 'd:\\a\\b')
@@ -312,6 +314,16 @@ def test_join(self):
         tester("ntpath.join('\\\\computer\\', 'share')", '\\\\computer\\share')
         tester("ntpath.join('\\\\computer\\share\\', 'a')", '\\\\computer\\share\\a')
         tester("ntpath.join('\\\\computer\\share\\a\\', 'b')", '\\\\computer\\share\\a\\b')
+        # Second part is anchored, so that the first part is ignored.
+        tester("ntpath.join('a', 'Z:b', 'c')", 'Z:b\\c')
+        tester("ntpath.join('a', 'Z:\\b', 'c')", 'Z:\\b\\c')
+        tester("ntpath.join('a', '\\\\b\\c', 'd')", '\\\\b\\c\\d')
+        # Second part has a root but not drive.
+        tester("ntpath.join('a', '\\b', 'c')", '\\b\\c')
+        tester("ntpath.join('Z:/a', '/b', 'c')", 'Z:\\b\\c')
+        tester("ntpath.join('//?/Z:/a', '/b', 'c')",  '\\\\?\\Z:\\b\\c')
+        tester("ntpath.join('D:a', './c:b')", 'D:a\\.\\c:b')
+        tester("ntpath.join('D:/a', './c:b')", 'D:\\a\\.\\c:b')
 
     def test_normpath(self):
         tester("ntpath.normpath('A//////././//.//B')", r'A\B')
@@ -394,6 +406,10 @@ def test_realpath_basic(self):
         d = drives.pop().encode()
         self.assertEqual(ntpath.realpath(d), d)
 
+        # gh-106242: Embedded nulls and non-strict fallback to abspath
+        self.assertEqual(ABSTFN + "\0spam",
+                         ntpath.realpath(os_helper.TESTFN + "\0spam", strict=False))
+
     @os_helper.skip_unless_symlink
     @unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
     def test_realpath_strict(self):
@@ -404,6 +420,8 @@ def test_realpath_strict(self):
         self.addCleanup(os_helper.unlink, ABSTFN)
         self.assertRaises(FileNotFoundError, ntpath.realpath, ABSTFN, strict=True)
         self.assertRaises(FileNotFoundError, ntpath.realpath, ABSTFN + "2", strict=True)
+        # gh-106242: Embedded nulls should raise OSError (not ValueError)
+        self.assertRaises(OSError, ntpath.realpath, ABSTFN + "\0spam", strict=True)
 
     @os_helper.skip_unless_symlink
     @unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
@@ -631,6 +649,48 @@ def test_realpath_cwd(self):
         with os_helper.change_cwd(test_dir_short):
             self.assertPathEqual(test_file_long, ntpath.realpath("file.txt"))
 
+    @unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
+    def test_realpath_permission(self):
+        # Test whether python can resolve the real filename of a
+        # shortened file name even if it does not have permission to access it.
+        ABSTFN = ntpath.realpath(os_helper.TESTFN)
+
+        os_helper.unlink(ABSTFN)
+        os_helper.rmtree(ABSTFN)
+        os.mkdir(ABSTFN)
+        self.addCleanup(os_helper.rmtree, ABSTFN)
+
+        test_file = ntpath.join(ABSTFN, "LongFileName123.txt")
+        test_file_short = ntpath.join(ABSTFN, "LONGFI~1.TXT")
+
+        with open(test_file, "wb") as f:
+            f.write(b"content")
+        # Automatic generation of short names may be disabled on
+        # NTFS volumes for the sake of performance.
+        # They're not supported at all on ReFS and exFAT.
+        subprocess.run(
+            # Try to set the short name manually.
+            ['fsutil.exe', 'file', 'setShortName', test_file, 'LONGFI~1.TXT'],
+            creationflags=subprocess.DETACHED_PROCESS
+        )
+
+        try:
+            self.assertPathEqual(test_file, ntpath.realpath(test_file_short))
+        except AssertionError:
+            raise unittest.SkipTest('the filesystem seems to lack support for short filenames')
+
+        # Deny the right to [S]YNCHRONIZE on the file to
+        # force nt._getfinalpathname to fail with ERROR_ACCESS_DENIED.
+        p = subprocess.run(
+            ['icacls.exe', test_file, '/deny', '*S-1-5-32-545:(S)'],
+            creationflags=subprocess.DETACHED_PROCESS
+        )
+
+        if p.returncode:
+            raise unittest.SkipTest('failed to deny access to the test file')
+
+        self.assertPathEqual(test_file, ntpath.realpath(test_file_short))
+
     def test_expandvars(self):
         with os_helper.EnvironmentVarGuard() as env:
             env.clear()
@@ -992,6 +1052,26 @@ def test_fast_paths_in_use(self):
         self.assertTrue(os.path.exists is nt._path_exists)
         self.assertFalse(inspect.isfunction(os.path.exists))
 
+    @unittest.skipIf(os.name != 'nt', "Dev Drives only exist on Win32")
+    def test_isdevdrive(self):
+        # Result may be True or False, but shouldn't raise
+        self.assertIn(ntpath.isdevdrive(os_helper.TESTFN), (True, False))
+        # ntpath.isdevdrive can handle relative paths
+        self.assertIn(ntpath.isdevdrive("."), (True, False))
+        self.assertIn(ntpath.isdevdrive(b"."), (True, False))
+        # Volume syntax is supported
+        self.assertIn(ntpath.isdevdrive(os.listvolumes()[0]), (True, False))
+        # Invalid volume returns False from os.path method
+        self.assertFalse(ntpath.isdevdrive(r"\\?\Volume{00000000-0000-0000-0000-000000000000}\\"))
+        # Invalid volume raises from underlying helper
+        with self.assertRaises(OSError):
+            nt._path_isdevdrive(r"\\?\Volume{00000000-0000-0000-0000-000000000000}\\")
+
+    @unittest.skipIf(os.name == 'nt', "isdevdrive fallback only used off Win32")
+    def test_isdevdrive_fallback(self):
+        # Fallback always returns False
+        self.assertFalse(ntpath.isdevdrive(os_helper.TESTFN))
+
 
 class NtCommonTest(test_genericpath.CommonTest, unittest.TestCase):
     pathmodule = ntpath
@@ -1016,6 +1096,7 @@ def test_path_normcase(self):
         self._check_function(self.path.normcase)
         if sys.platform == 'win32':
             self.assertEqual(ntpath.normcase('\u03a9\u2126'), 'ωΩ')
+            self.assertEqual(ntpath.normcase('abc\x00def'), 'abc\x00def')
 
     def test_path_isabs(self):
         self._check_function(self.path.isabs)
diff --git a/Lib/test/test_opcache.py b/Lib/test/test_opcache.py
index 57fed5d09fd7b8..2b2783d57be8f4 100644
--- a/Lib/test/test_opcache.py
+++ b/Lib/test/test_opcache.py
@@ -1,4 +1,28 @@
+import copy
+import pickle
+import dis
+import threading
+import types
 import unittest
+from test.support import threading_helper, check_impl_detail
+
+# Skip this module on other interpreters, it is cpython specific:
+if check_impl_detail(cpython=False):
+    raise unittest.SkipTest('implementation detail specific to cpython')
+
+import _testinternalcapi
+
+
+def disabling_optimizer(func):
+    def wrapper(*args, **kwargs):
+        old_opt = _testinternalcapi.get_optimizer()
+        _testinternalcapi.set_optimizer(None)
+        try:
+            return func(*args, **kwargs)
+        finally:
+            _testinternalcapi.set_optimizer(old_opt)
+
+    return wrapper
 
 
 class TestLoadSuperAttrCache(unittest.TestCase):
@@ -452,6 +476,666 @@ def f():
             self.assertFalse(f())
 
 
+class TestCallCache(unittest.TestCase):
+    def test_too_many_defaults_0(self):
+        def f():
+            pass
+
+        f.__defaults__ = (None,)
+        for _ in range(1025):
+            f()
+
+    def test_too_many_defaults_1(self):
+        def f(x):
+            pass
+
+        f.__defaults__ = (None, None)
+        for _ in range(1025):
+            f(None)
+            f()
+
+    def test_too_many_defaults_2(self):
+        def f(x, y):
+            pass
+
+        f.__defaults__ = (None, None, None)
+        for _ in range(1025):
+            f(None, None)
+            f(None)
+            f()
+
+
+@threading_helper.requires_working_threading()
+class TestRacesDoNotCrash(unittest.TestCase):
+    # Careful with these. Bigger numbers have a higher chance of catching bugs,
+    # but you can also burn through a *ton* of type/dict/function versions:
+    ITEMS = 1000
+    LOOPS = 4
+    WARMUPS = 2
+    WRITERS = 2
+
+    def assert_specialized(self, f, opname):
+        instructions = dis.get_instructions(f, adaptive=True)
+        opnames = {instruction.opname for instruction in instructions}
+        self.assertIn(opname, opnames)
+
+    @disabling_optimizer
+    def assert_races_do_not_crash(
+        self, opname, get_items, read, write, *, check_items=False
+    ):
+        # This might need a few dozen loops in some cases:
+        for _ in range(self.LOOPS):
+            items = get_items()
+            # Reset:
+            if check_items:
+                for item in items:
+                    item.__code__ = item.__code__.replace()
+            else:
+                read.__code__ = read.__code__.replace()
+            # Specialize:
+            for _ in range(self.WARMUPS):
+                read(items)
+            if check_items:
+                for item in items:
+                    self.assert_specialized(item, opname)
+            else:
+                self.assert_specialized(read, opname)
+            # Create writers:
+            writers = []
+            for _ in range(self.WRITERS):
+                writer = threading.Thread(target=write, args=[items])
+                writers.append(writer)
+            # Run:
+            for writer in writers:
+                writer.start()
+            read(items)  # BOOM!
+            for writer in writers:
+                writer.join()
+
+    def test_binary_subscr_getitem(self):
+        def get_items():
+            class C:
+                __getitem__ = lambda self, item: None
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item[None]
+                except TypeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del item.__getitem__
+                except AttributeError:
+                    pass
+                type(item).__getitem__ = lambda self, item: None
+
+        opname = "BINARY_SUBSCR_GETITEM"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_binary_subscr_list_int(self):
+        def get_items():
+            items = []
+            for _ in range(self.ITEMS):
+                item = [None]
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item[0]
+                except IndexError:
+                    pass
+
+        def write(items):
+            for item in items:
+                item.clear()
+                item.append(None)
+
+        opname = "BINARY_SUBSCR_LIST_INT"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_for_iter_gen(self):
+        def get_items():
+            def g():
+                yield
+                yield
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = g()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    for _ in item:
+                        break
+                except ValueError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    for _ in item:
+                        break
+                except ValueError:
+                    pass
+
+        opname = "FOR_ITER_GEN"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_for_iter_list(self):
+        def get_items():
+            items = []
+            for _ in range(self.ITEMS):
+                item = [None]
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                for item in item:
+                    break
+
+        def write(items):
+            for item in items:
+                item.clear()
+                item.append(None)
+
+        opname = "FOR_ITER_LIST"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_class(self):
+        def get_items():
+            class C:
+                a = object()
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.a
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del item.a
+                except AttributeError:
+                    pass
+                item.a = object()
+
+        opname = "LOAD_ATTR_CLASS"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_getattribute_overridden(self):
+        def get_items():
+            class C:
+                __getattribute__ = lambda self, name: None
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.a
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del item.__getattribute__
+                except AttributeError:
+                    pass
+                type(item).__getattribute__ = lambda self, name: None
+
+        opname = "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_instance_value(self):
+        def get_items():
+            class C:
+                pass
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                item.a = None
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                item.a
+
+        def write(items):
+            for item in items:
+                item.__dict__[None] = None
+
+        opname = "LOAD_ATTR_INSTANCE_VALUE"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_method_lazy_dict(self):
+        def get_items():
+            class C(Exception):
+                m = lambda self: None
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.m()
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del item.m
+                except AttributeError:
+                    pass
+                type(item).m = lambda self: None
+
+        opname = "LOAD_ATTR_METHOD_LAZY_DICT"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_method_no_dict(self):
+        def get_items():
+            class C:
+                __slots__ = ()
+                m = lambda self: None
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.m()
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del item.m
+                except AttributeError:
+                    pass
+                type(item).m = lambda self: None
+
+        opname = "LOAD_ATTR_METHOD_NO_DICT"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_method_with_values(self):
+        def get_items():
+            class C:
+                m = lambda self: None
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.m()
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del item.m
+                except AttributeError:
+                    pass
+                type(item).m = lambda self: None
+
+        opname = "LOAD_ATTR_METHOD_WITH_VALUES"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_module(self):
+        def get_items():
+            items = []
+            for _ in range(self.ITEMS):
+                item = types.ModuleType("<item>")
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.__name__
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                d = item.__dict__.copy()
+                item.__dict__.clear()
+                item.__dict__.update(d)
+
+        opname = "LOAD_ATTR_MODULE"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_property(self):
+        def get_items():
+            class C:
+                a = property(lambda self: None)
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item.a
+                except AttributeError:
+                    pass
+
+        def write(items):
+            for item in items:
+                try:
+                    del type(item).a
+                except AttributeError:
+                    pass
+                type(item).a = property(lambda self: None)
+
+        opname = "LOAD_ATTR_PROPERTY"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_attr_with_hint(self):
+        def get_items():
+            class C:
+                pass
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                item.a = None
+                # Resize into a combined unicode dict:
+                for i in range(29):
+                    setattr(item, f"_{i}", None)
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                item.a
+
+        def write(items):
+            for item in items:
+                item.__dict__[None] = None
+
+        opname = "LOAD_ATTR_WITH_HINT"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_load_global_module(self):
+        def get_items():
+            items = []
+            for _ in range(self.ITEMS):
+                item = eval("lambda: x", {"x": None})
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                item()
+
+        def write(items):
+            for item in items:
+                item.__globals__[None] = None
+
+        opname = "LOAD_GLOBAL_MODULE"
+        self.assert_races_do_not_crash(
+            opname, get_items, read, write, check_items=True
+        )
+
+    def test_store_attr_instance_value(self):
+        def get_items():
+            class C:
+                pass
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                item.a = None
+
+        def write(items):
+            for item in items:
+                item.__dict__[None] = None
+
+        opname = "STORE_ATTR_INSTANCE_VALUE"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_store_attr_with_hint(self):
+        def get_items():
+            class C:
+                pass
+
+            items = []
+            for _ in range(self.ITEMS):
+                item = C()
+                # Resize into a combined unicode dict:
+                for i in range(29):
+                    setattr(item, f"_{i}", None)
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                item.a = None
+
+        def write(items):
+            for item in items:
+                item.__dict__[None] = None
+
+        opname = "STORE_ATTR_WITH_HINT"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_store_subscr_list_int(self):
+        def get_items():
+            items = []
+            for _ in range(self.ITEMS):
+                item = [None]
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    item[0] = None
+                except IndexError:
+                    pass
+
+        def write(items):
+            for item in items:
+                item.clear()
+                item.append(None)
+
+        opname = "STORE_SUBSCR_LIST_INT"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+    def test_unpack_sequence_list(self):
+        def get_items():
+            items = []
+            for _ in range(self.ITEMS):
+                item = [None]
+                items.append(item)
+            return items
+
+        def read(items):
+            for item in items:
+                try:
+                    [_] = item
+                except ValueError:
+                    pass
+
+        def write(items):
+            for item in items:
+                item.clear()
+                item.append(None)
+
+        opname = "UNPACK_SEQUENCE_LIST"
+        self.assert_races_do_not_crash(opname, get_items, read, write)
+
+class C:
+    pass
+
+class TestInstanceDict(unittest.TestCase):
+
+    def setUp(self):
+        c = C()
+        c.a, c.b, c.c = 0,0,0
+
+    def test_values_on_instance(self):
+        c = C()
+        c.a = 1
+        C().b = 2
+        c.c = 3
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c),
+            (1, '<NULL>', 3)
+        )
+
+    def test_dict_materialization(self):
+        c = C()
+        c.a = 1
+        c.b = 2
+        c.__dict__
+        self.assertIs(
+            _testinternalcapi.get_object_dict_values(c),
+            None
+        )
+
+    def test_dict_dematerialization(self):
+        c = C()
+        c.a = 1
+        c.b = 2
+        c.__dict__
+        self.assertIs(
+            _testinternalcapi.get_object_dict_values(c),
+            None
+        )
+        for _ in range(100):
+            c.a
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c),
+            (1, 2, '<NULL>')
+        )
+
+    def test_dict_dematerialization_multiple_refs(self):
+        c = C()
+        c.a = 1
+        c.b = 2
+        d = c.__dict__
+        for _ in range(100):
+            c.a
+        self.assertIs(
+            _testinternalcapi.get_object_dict_values(c),
+            None
+        )
+        self.assertIs(c.__dict__, d)
+
+    def test_dict_dematerialization_copy(self):
+        c = C()
+        c.a = 1
+        c.b = 2
+        c2 = copy.copy(c)
+        for _ in range(100):
+            c.a
+            c2.a
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c),
+            (1, 2, '<NULL>')
+        )
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c2),
+            (1, 2, '<NULL>')
+        )
+        c3 = copy.deepcopy(c)
+        for _ in range(100):
+            c.a
+            c3.a
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c),
+            (1, 2, '<NULL>')
+        )
+        #NOTE -- c3.__dict__ does not de-materialize
+
+    def test_dict_dematerialization_pickle(self):
+        c = C()
+        c.a = 1
+        c.b = 2
+        c2 = pickle.loads(pickle.dumps(c))
+        for _ in range(100):
+            c.a
+            c2.a
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c),
+            (1, 2, '<NULL>')
+        )
+        self.assertEqual(
+            _testinternalcapi.get_object_dict_values(c2),
+            (1, 2, '<NULL>')
+        )
+
+    def test_dict_dematerialization_subclass(self):
+        class D(dict): pass
+        c = C()
+        c.a = 1
+        c.b = 2
+        c.__dict__ = D(c.__dict__)
+        for _ in range(100):
+            c.a
+        self.assertIs(
+            _testinternalcapi.get_object_dict_values(c),
+            None
+        )
+        self.assertEqual(
+            c.__dict__,
+            {'a':1, 'b':2}
+        )
+
+
 if __name__ == "__main__":
-    import unittest
     unittest.main()
diff --git a/Lib/test/test_opcodes.py b/Lib/test/test_opcodes.py
index e880c3f1ac875e..72488b2bb6b4ff 100644
--- a/Lib/test/test_opcodes.py
+++ b/Lib/test/test_opcodes.py
@@ -1,7 +1,8 @@
 # Python test set -- part 2, opcodes
 
 import unittest
-from test import ann_module, support
+from test import support
+from test.typinganndata import ann_module
 
 class OpcodeTest(unittest.TestCase):
 
diff --git a/Lib/test/test_ordered_dict.py b/Lib/test/test_ordered_dict.py
index decbcc2419c9fc..4571b23dfe7c1a 100644
--- a/Lib/test/test_ordered_dict.py
+++ b/Lib/test/test_ordered_dict.py
@@ -122,6 +122,17 @@ def items(self):
         self.OrderedDict(Spam())
         self.assertEqual(calls, ['keys'])
 
+    def test_overridden_init(self):
+        # Sync-up pure Python OD class with C class where
+        # a consistent internal state is created in __new__
+        # rather than __init__.
+        OrderedDict = self.OrderedDict
+        class ODNI(OrderedDict):
+            def __init__(*args, **kwargs):
+                pass
+        od = ODNI()
+        od['a'] = 1  # This used to fail because __init__ was bypassed
+
     def test_fromkeys(self):
         OrderedDict = self.OrderedDict
         od = OrderedDict.fromkeys('abc')
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 584cc05ca82a55..c31c9684051196 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -14,6 +14,7 @@
 import os
 import pickle
 import select
+import selectors
 import shutil
 import signal
 import socket
@@ -737,7 +738,7 @@ def test_access_denied(self):
         # denied. See issue 28075.
         # os.environ['TEMP'] should be located on a volume that
         # supports file ACLs.
-        fname = os.path.join(os.environ['TEMP'], self.fname)
+        fname = os.path.join(os.environ['TEMP'], self.fname + "_access")
         self.addCleanup(os_helper.unlink, fname)
         create_file(fname, b'ABC')
         # Deny the right to [S]YNCHRONIZE on the file to
@@ -913,6 +914,13 @@ def set_time(filename):
             os.utime(self.fname, None)
         self._test_utime_current(set_time)
 
+    def test_utime_nonexistent(self):
+        now = time.time()
+        filename = 'nonexistent'
+        with self.assertRaises(FileNotFoundError) as cm:
+            os.utime(filename, (now, now))
+        self.assertEqual(cm.exception.filename, filename)
+
     def get_file_system(self, path):
         if sys.platform == 'win32':
             root = os.path.splitdrive(os.path.abspath(path))[0] + '\\'
@@ -1142,9 +1150,12 @@ def test_putenv_unsetenv(self):
     def test_putenv_unsetenv_error(self):
         # Empty variable name is invalid.
         # "=" and null character are not allowed in a variable name.
-        for name in ('', '=name', 'na=me', 'name=', 'name\0', 'na\0me'):
+        for name in ('', '=name', 'na=me', 'name='):
             self.assertRaises((OSError, ValueError), os.putenv, name, "value")
             self.assertRaises((OSError, ValueError), os.unsetenv, name)
+        for name in ('name\0', 'na\0me'):
+            self.assertRaises(ValueError, os.putenv, name, "value")
+            self.assertRaises(ValueError, os.unsetenv, name)
 
         if sys.platform == "win32":
             # On Windows, an environment variable string ("name=value" string)
@@ -2559,30 +2570,34 @@ def _kill_with_event(self, event, name):
         tagname = "test_os_%s" % uuid.uuid1()
         m = mmap.mmap(-1, 1, tagname)
         m[0] = 0
+
         # Run a script which has console control handling enabled.
-        proc = subprocess.Popen([sys.executable,
-                   os.path.join(os.path.dirname(__file__),
-                                "win_console_handler.py"), tagname],
-                   creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
-        # Let the interpreter startup before we send signals. See #3137.
-        count, max = 0, 100
-        while count < max and proc.poll() is None:
-            if m[0] == 1:
-                break
-            time.sleep(0.1)
-            count += 1
-        else:
-            # Forcefully kill the process if we weren't able to signal it.
-            os.kill(proc.pid, signal.SIGINT)
-            self.fail("Subprocess didn't finish initialization")
-        os.kill(proc.pid, event)
-        # proc.send_signal(event) could also be done here.
-        # Allow time for the signal to be passed and the process to exit.
-        time.sleep(0.5)
-        if not proc.poll():
-            # Forcefully kill the process if we weren't able to signal it.
-            os.kill(proc.pid, signal.SIGINT)
-            self.fail("subprocess did not stop on {}".format(name))
+        script = os.path.join(os.path.dirname(__file__),
+                              "win_console_handler.py")
+        cmd = [sys.executable, script, tagname]
+        proc = subprocess.Popen(cmd,
+                                creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
+
+        with proc:
+            # Let the interpreter startup before we send signals. See #3137.
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if proc.poll() is None:
+                    break
+            else:
+                # Forcefully kill the process if we weren't able to signal it.
+                proc.kill()
+                self.fail("Subprocess didn't finish initialization")
+
+            os.kill(proc.pid, event)
+
+            try:
+                # proc.send_signal(event) could also be done here.
+                # Allow time for the signal to be passed and the process to exit.
+                proc.wait(timeout=support.SHORT_TIMEOUT)
+            except subprocess.TimeoutExpired:
+                # Forcefully kill the process if we weren't able to signal it.
+                proc.kill()
+                self.fail("subprocess did not stop on {}".format(name))
 
     @unittest.skip("subprocesses aren't inheriting Ctrl+C property")
     @support.requires_subprocess()
@@ -3915,6 +3930,328 @@ def test_eventfd_select(self):
         self.assertEqual((rfd, wfd, xfd), ([fd], [], []))
         os.eventfd_read(fd)
 
+@unittest.skipUnless(hasattr(os, 'timerfd_create'), 'requires os.timerfd_create')
+@support.requires_linux_version(2, 6, 30)
+class TimerfdTests(unittest.TestCase):
+    # Tolerate a difference of 1 ms
+    CLOCK_RES_NS = 1_000_000
+    CLOCK_RES = CLOCK_RES_NS * 1e-9
+
+    def timerfd_create(self, *args, **kwargs):
+        fd = os.timerfd_create(*args, **kwargs)
+        self.assertGreaterEqual(fd, 0)
+        self.assertFalse(os.get_inheritable(fd))
+        self.addCleanup(os.close, fd)
+        return fd
+
+    def read_count_signaled(self, fd):
+        # read 8 bytes
+        data = os.read(fd, 8)
+        return int.from_bytes(data, byteorder=sys.byteorder)
+
+    def test_timerfd_initval(self):
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        initial_expiration = 0.25
+        interval = 0.125
+
+        # 1st call
+        next_expiration, interval2 = os.timerfd_settime(fd, initial=initial_expiration, interval=interval)
+        self.assertAlmostEqual(interval2, 0.0, places=3)
+        self.assertAlmostEqual(next_expiration, 0.0, places=3)
+
+        # 2nd call
+        next_expiration, interval2 = os.timerfd_settime(fd, initial=initial_expiration, interval=interval)
+        self.assertAlmostEqual(interval2, interval, places=3)
+        self.assertAlmostEqual(next_expiration, initial_expiration, places=3)
+
+        # timerfd_gettime
+        next_expiration, interval2 = os.timerfd_gettime(fd)
+        self.assertAlmostEqual(interval2, interval, places=3)
+        self.assertAlmostEqual(next_expiration, initial_expiration, places=3)
+
+    def test_timerfd_non_blocking(self):
+        fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
+
+        # 0.1 second later
+        initial_expiration = 0.1
+        os.timerfd_settime(fd, initial=initial_expiration, interval=0)
+
+        # read() raises OSError with errno is EAGAIN for non-blocking timer.
+        with self.assertRaises(OSError) as ctx:
+            self.read_count_signaled(fd)
+        self.assertEqual(ctx.exception.errno, errno.EAGAIN)
+
+        # Wait more than 0.1 seconds
+        time.sleep(initial_expiration + 0.1)
+
+        # confirm if timerfd is readable and read() returns 1 as bytes.
+        self.assertEqual(self.read_count_signaled(fd), 1)
+
+    def test_timerfd_negative(self):
+        one_sec_in_nsec = 10**9
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        test_flags = [0, os.TFD_TIMER_ABSTIME]
+        if hasattr(os, 'TFD_TIMER_CANCEL_ON_SET'):
+            test_flags.append(os.TFD_TIMER_ABSTIME | os.TFD_TIMER_CANCEL_ON_SET)
+
+        # Any of 'initial' and 'interval' is negative value.
+        for initial, interval in ( (-1, 0), (1, -1), (-1, -1),  (-0.1, 0), (1, -0.1), (-0.1, -0.1)):
+            for flags in test_flags:
+                with self.subTest(flags=flags, initial=initial, interval=interval):
+                    with self.assertRaises(OSError) as context:
+                        os.timerfd_settime(fd, flags=flags, initial=initial, interval=interval)
+                    self.assertEqual(context.exception.errno, errno.EINVAL)
+
+                    with self.assertRaises(OSError) as context:
+                        initial_ns = int( one_sec_in_nsec * initial )
+                        interval_ns = int( one_sec_in_nsec * interval )
+                        os.timerfd_settime_ns(fd, flags=flags, initial=initial_ns, interval=interval_ns)
+                    self.assertEqual(context.exception.errno, errno.EINVAL)
+
+    def test_timerfd_interval(self):
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        # 1 second
+        initial_expiration = 1
+        # 0.5 second
+        interval = 0.5
+
+        os.timerfd_settime(fd, initial=initial_expiration, interval=interval)
+
+        # timerfd_gettime
+        next_expiration, interval2 = os.timerfd_gettime(fd)
+        self.assertAlmostEqual(interval2, interval, places=3)
+        self.assertAlmostEqual(next_expiration, initial_expiration, places=3)
+
+        count = 3
+        t = time.perf_counter()
+        for _ in range(count):
+            self.assertEqual(self.read_count_signaled(fd), 1)
+        t = time.perf_counter() - t
+
+        total_time = initial_expiration + interval * (count - 1)
+        self.assertGreater(t, total_time - self.CLOCK_RES)
+
+        # wait 3.5 time of interval
+        time.sleep( (count+0.5) * interval)
+        self.assertEqual(self.read_count_signaled(fd), count)
+
+    def test_timerfd_TFD_TIMER_ABSTIME(self):
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        now = time.clock_gettime(time.CLOCK_REALTIME)
+
+        # 1 second later from now.
+        offset = 1
+        initial_expiration = now + offset
+        # not interval timer
+        interval = 0
+
+        os.timerfd_settime(fd, flags=os.TFD_TIMER_ABSTIME, initial=initial_expiration, interval=interval)
+
+        # timerfd_gettime
+        # Note: timerfd_gettime returns relative values even if TFD_TIMER_ABSTIME is specified.
+        next_expiration, interval2 = os.timerfd_gettime(fd)
+        self.assertAlmostEqual(interval2, interval, places=3)
+        self.assertAlmostEqual(next_expiration, offset, places=3)
+
+        t = time.perf_counter()
+        count_signaled = self.read_count_signaled(fd)
+        t = time.perf_counter() - t
+        self.assertEqual(count_signaled, 1)
+
+        self.assertGreater(t, offset - self.CLOCK_RES)
+
+    def test_timerfd_select(self):
+        fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
+
+        rfd, wfd, xfd = select.select([fd], [fd], [fd], 0)
+        self.assertEqual((rfd, wfd, xfd), ([], [], []))
+
+        # 0.25 second
+        initial_expiration = 0.25
+        # every 0.125 second
+        interval = 0.125
+
+        os.timerfd_settime(fd, initial=initial_expiration, interval=interval)
+
+        count = 3
+        t = time.perf_counter()
+        for _ in range(count):
+            rfd, wfd, xfd = select.select([fd], [fd], [fd], initial_expiration + interval)
+            self.assertEqual((rfd, wfd, xfd), ([fd], [], []))
+            self.assertEqual(self.read_count_signaled(fd), 1)
+        t = time.perf_counter() - t
+
+        total_time = initial_expiration + interval * (count - 1)
+        self.assertGreater(t, total_time - self.CLOCK_RES)
+
+    def check_timerfd_poll(self, nanoseconds):
+        fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
+
+        selector = selectors.DefaultSelector()
+        selector.register(fd, selectors.EVENT_READ)
+        self.addCleanup(selector.close)
+
+        sec_to_nsec = 10 ** 9
+        # 0.25 second
+        initial_expiration_ns = sec_to_nsec // 4
+        # every 0.125 second
+        interval_ns = sec_to_nsec // 8
+
+        if nanoseconds:
+            os.timerfd_settime_ns(fd,
+                                  initial=initial_expiration_ns,
+                                  interval=interval_ns)
+        else:
+            os.timerfd_settime(fd,
+                               initial=initial_expiration_ns / sec_to_nsec,
+                               interval=interval_ns / sec_to_nsec)
+
+        count = 3
+        if nanoseconds:
+            t = time.perf_counter_ns()
+        else:
+            t = time.perf_counter()
+        for i in range(count):
+            timeout_margin_ns = interval_ns
+            if i == 0:
+                timeout_ns = initial_expiration_ns + interval_ns + timeout_margin_ns
+            else:
+                timeout_ns = interval_ns + timeout_margin_ns
+
+            ready = selector.select(timeout_ns / sec_to_nsec)
+            self.assertEqual(len(ready), 1, ready)
+            event = ready[0][1]
+            self.assertEqual(event, selectors.EVENT_READ)
+
+            self.assertEqual(self.read_count_signaled(fd), 1)
+
+        total_time = initial_expiration_ns + interval_ns * (count - 1)
+        if nanoseconds:
+            dt = time.perf_counter_ns() - t
+            self.assertGreater(dt, total_time - self.CLOCK_RES_NS)
+        else:
+            dt = time.perf_counter() - t
+            self.assertGreater(dt, total_time / sec_to_nsec - self.CLOCK_RES)
+        selector.unregister(fd)
+
+    def test_timerfd_poll(self):
+        self.check_timerfd_poll(False)
+
+    def test_timerfd_ns_poll(self):
+        self.check_timerfd_poll(True)
+
+    def test_timerfd_ns_initval(self):
+        one_sec_in_nsec = 10**9
+        limit_error = one_sec_in_nsec // 10**3
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        # 1st call
+        initial_expiration_ns = 0
+        interval_ns = one_sec_in_nsec // 1000
+        next_expiration_ns, interval_ns2  = os.timerfd_settime_ns(fd, initial=initial_expiration_ns, interval=interval_ns)
+        self.assertEqual(interval_ns2, 0)
+        self.assertEqual(next_expiration_ns, 0)
+
+        # 2nd call
+        next_expiration_ns, interval_ns2 = os.timerfd_settime_ns(fd, initial=initial_expiration_ns, interval=interval_ns)
+        self.assertEqual(interval_ns2, interval_ns)
+        self.assertEqual(next_expiration_ns, initial_expiration_ns)
+
+        # timerfd_gettime
+        next_expiration_ns, interval_ns2 = os.timerfd_gettime_ns(fd)
+        self.assertEqual(interval_ns2, interval_ns)
+        self.assertLessEqual(next_expiration_ns, initial_expiration_ns)
+
+        self.assertAlmostEqual(next_expiration_ns, initial_expiration_ns, delta=limit_error)
+
+    def test_timerfd_ns_interval(self):
+        one_sec_in_nsec = 10**9
+        limit_error = one_sec_in_nsec // 10**3
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        # 1 second
+        initial_expiration_ns = one_sec_in_nsec
+        # every 0.5 second
+        interval_ns = one_sec_in_nsec // 2
+
+        os.timerfd_settime_ns(fd, initial=initial_expiration_ns, interval=interval_ns)
+
+        # timerfd_gettime
+        next_expiration_ns, interval_ns2 = os.timerfd_gettime_ns(fd)
+        self.assertEqual(interval_ns2, interval_ns)
+        self.assertLessEqual(next_expiration_ns, initial_expiration_ns)
+
+        count = 3
+        t = time.perf_counter_ns()
+        for _ in range(count):
+            self.assertEqual(self.read_count_signaled(fd), 1)
+        t = time.perf_counter_ns() - t
+
+        total_time_ns = initial_expiration_ns + interval_ns * (count - 1)
+        self.assertGreater(t, total_time_ns - self.CLOCK_RES_NS)
+
+        # wait 3.5 time of interval
+        time.sleep( (count+0.5) * interval_ns / one_sec_in_nsec)
+        self.assertEqual(self.read_count_signaled(fd), count)
+
+
+    def test_timerfd_ns_TFD_TIMER_ABSTIME(self):
+        one_sec_in_nsec = 10**9
+        limit_error = one_sec_in_nsec // 10**3
+        fd = self.timerfd_create(time.CLOCK_REALTIME)
+
+        now_ns = time.clock_gettime_ns(time.CLOCK_REALTIME)
+
+        # 1 second later from now.
+        offset_ns = one_sec_in_nsec
+        initial_expiration_ns = now_ns + offset_ns
+        # not interval timer
+        interval_ns = 0
+
+        os.timerfd_settime_ns(fd, flags=os.TFD_TIMER_ABSTIME, initial=initial_expiration_ns, interval=interval_ns)
+
+        # timerfd_gettime
+        # Note: timerfd_gettime returns relative values even if TFD_TIMER_ABSTIME is specified.
+        next_expiration_ns, interval_ns2 = os.timerfd_gettime_ns(fd)
+        self.assertLess(abs(interval_ns2 - interval_ns),  limit_error)
+        self.assertLess(abs(next_expiration_ns - offset_ns),  limit_error)
+
+        t = time.perf_counter_ns()
+        count_signaled = self.read_count_signaled(fd)
+        t = time.perf_counter_ns() - t
+        self.assertEqual(count_signaled, 1)
+
+        self.assertGreater(t, offset_ns - self.CLOCK_RES_NS)
+
+    def test_timerfd_ns_select(self):
+        one_sec_in_nsec = 10**9
+
+        fd = self.timerfd_create(time.CLOCK_REALTIME, flags=os.TFD_NONBLOCK)
+
+        rfd, wfd, xfd = select.select([fd], [fd], [fd], 0)
+        self.assertEqual((rfd, wfd, xfd), ([], [], []))
+
+        # 0.25 second
+        initial_expiration_ns = one_sec_in_nsec // 4
+        # every 0.125 second
+        interval_ns = one_sec_in_nsec // 8
+
+        os.timerfd_settime_ns(fd, initial=initial_expiration_ns, interval=interval_ns)
+
+        count = 3
+        t = time.perf_counter_ns()
+        for _ in range(count):
+            rfd, wfd, xfd = select.select([fd], [fd], [fd], (initial_expiration_ns + interval_ns) / 1e9 )
+            self.assertEqual((rfd, wfd, xfd), ([fd], [], []))
+            self.assertEqual(self.read_count_signaled(fd), 1)
+        t = time.perf_counter_ns() - t
+
+        total_time_ns = initial_expiration_ns + interval_ns * (count - 1)
+        self.assertGreater(t, total_time_ns - self.CLOCK_RES_NS)
 
 class OSErrorTests(unittest.TestCase):
     def setUp(self):
@@ -3989,14 +4326,42 @@ def test_oserror_filename(self):
                     self.fail(f"No exception thrown by {func}")
 
 class CPUCountTests(unittest.TestCase):
+    def check_cpu_count(self, cpus):
+        if cpus is None:
+            self.skipTest("Could not determine the number of CPUs")
+
+        self.assertIsInstance(cpus, int)
+        self.assertGreater(cpus, 0)
+
     def test_cpu_count(self):
         cpus = os.cpu_count()
-        if cpus is not None:
-            self.assertIsInstance(cpus, int)
-            self.assertGreater(cpus, 0)
-        else:
+        self.check_cpu_count(cpus)
+
+    def test_process_cpu_count(self):
+        cpus = os.process_cpu_count()
+        self.assertLessEqual(cpus, os.cpu_count())
+        self.check_cpu_count(cpus)
+
+    @unittest.skipUnless(hasattr(os, 'sched_setaffinity'),
+                         "don't have sched affinity support")
+    def test_process_cpu_count_affinity(self):
+        affinity1 = os.process_cpu_count()
+        if affinity1 is None:
             self.skipTest("Could not determine the number of CPUs")
 
+        # Disable one CPU
+        mask = os.sched_getaffinity(0)
+        if len(mask) <= 1:
+            self.skipTest(f"sched_getaffinity() returns less than "
+                          f"2 CPUs: {sorted(mask)}")
+        self.addCleanup(os.sched_setaffinity, 0, list(mask))
+        mask.pop()
+        os.sched_setaffinity(0, mask)
+
+        # test process_cpu_count()
+        affinity2 = os.process_cpu_count()
+        self.assertEqual(affinity2, affinity1 - 1)
+
 
 # FD inheritance check is only useful for systems with process support.
 @support.requires_subprocess()
@@ -4640,6 +5005,51 @@ class A(os.PathLike):
     def test_pathlike_class_getitem(self):
         self.assertIsInstance(os.PathLike[bytes], types.GenericAlias)
 
+    def test_pathlike_subclass_slots(self):
+        class A(os.PathLike):
+            __slots__ = ()
+            def __fspath__(self):
+                return ''
+        self.assertFalse(hasattr(A(), '__dict__'))
+
+    def test_fspath_set_to_None(self):
+        class Foo:
+            __fspath__ = None
+
+        class Bar:
+            def __fspath__(self):
+                return 'bar'
+
+        class Baz(Bar):
+            __fspath__ = None
+
+        good_error_msg = (
+            r"expected str, bytes or os.PathLike object, not {}".format
+        )
+
+        with self.assertRaisesRegex(TypeError, good_error_msg("Foo")):
+            self.fspath(Foo())
+
+        self.assertEqual(self.fspath(Bar()), 'bar')
+
+        with self.assertRaisesRegex(TypeError, good_error_msg("Baz")):
+            self.fspath(Baz())
+
+        with self.assertRaisesRegex(TypeError, good_error_msg("Foo")):
+            open(Foo())
+
+        with self.assertRaisesRegex(TypeError, good_error_msg("Baz")):
+            open(Baz())
+
+        other_good_error_msg = (
+            r"should be string, bytes or os.PathLike, not {}".format
+        )
+
+        with self.assertRaisesRegex(TypeError, other_good_error_msg("Foo")):
+            os.rename(Foo(), "foooo")
+
+        with self.assertRaisesRegex(TypeError, other_good_error_msg("Baz")):
+            os.rename(Baz(), "bazzz")
 
 class TimesTests(unittest.TestCase):
     def test_times(self):
@@ -4700,6 +5110,22 @@ def test_fork_warns_when_non_python_thread_exists(self):
         self.assertEqual(err.decode("utf-8"), "")
         self.assertEqual(out.decode("utf-8"), "")
 
+    def test_fork_at_exit(self):
+        code = """if 1:
+            import atexit
+            import os
+
+            def exit_handler():
+                pid = os.fork()
+                if pid != 0:
+                    print("shouldn't be printed")
+
+            atexit.register(exit_handler)
+        """
+        _, out, err = assert_python_ok("-c", code)
+        self.assertEqual(b"", out)
+        self.assertIn(b"can't fork at interpreter shutdown", err)
+
 
 # Only test if the C version is provided, otherwise TestPEP519 already tested
 # the pure Python implementation.
diff --git a/Lib/test/test_ossaudiodev.py b/Lib/test/test_ossaudiodev.py
deleted file mode 100644
index 2cc641a49b63a5..00000000000000
--- a/Lib/test/test_ossaudiodev.py
+++ /dev/null
@@ -1,205 +0,0 @@
-from test import support
-from test.support import import_helper, warnings_helper
-import warnings
-support.requires('audio')
-
-from test.support import findfile
-
-with warnings.catch_warnings():
-    warnings.simplefilter("ignore", DeprecationWarning)
-    ossaudiodev = import_helper.import_module('ossaudiodev')
-audioop = warnings_helper.import_deprecated('audioop')
-sunau = warnings_helper.import_deprecated('sunau')
-
-import errno
-import sys
-import time
-import unittest
-
-# Arggh, AFMT_S16_NE not defined on all platforms -- seems to be a
-# fairly recent addition to OSS.
-try:
-    from ossaudiodev import AFMT_S16_NE
-except ImportError:
-    if sys.byteorder == "little":
-        AFMT_S16_NE = ossaudiodev.AFMT_S16_LE
-    else:
-        AFMT_S16_NE = ossaudiodev.AFMT_S16_BE
-
-
-def read_sound_file(path):
-    with open(path, 'rb') as fp:
-        au = sunau.open(fp)
-        rate = au.getframerate()
-        nchannels = au.getnchannels()
-        encoding = au._encoding
-        fp.seek(0)
-        data = fp.read()
-
-    if encoding != sunau.AUDIO_FILE_ENCODING_MULAW_8:
-        raise RuntimeError("Expect .au file with 8-bit mu-law samples")
-
-    # Convert the data to 16-bit signed.
-    data = audioop.ulaw2lin(data, 2)
-    return (data, rate, 16, nchannels)
-
-class OSSAudioDevTests(unittest.TestCase):
-
-    def play_sound_file(self, data, rate, ssize, nchannels):
-        try:
-            dsp = ossaudiodev.open('w')
-        except OSError as msg:
-            if msg.args[0] in (errno.EACCES, errno.ENOENT,
-                               errno.ENODEV, errno.EBUSY):
-                raise unittest.SkipTest(msg)
-            raise
-
-        # at least check that these methods can be invoked
-        dsp.bufsize()
-        dsp.obufcount()
-        dsp.obuffree()
-        dsp.getptr()
-        dsp.fileno()
-
-        # Make sure the read-only attributes work.
-        self.assertFalse(dsp.closed)
-        self.assertEqual(dsp.name, "/dev/dsp")
-        self.assertEqual(dsp.mode, "w", "bad dsp.mode: %r" % dsp.mode)
-
-        # And make sure they're really read-only.
-        for attr in ('closed', 'name', 'mode'):
-            try:
-                setattr(dsp, attr, 42)
-            except (TypeError, AttributeError):
-                pass
-            else:
-                self.fail("dsp.%s not read-only" % attr)
-
-        # Compute expected running time of sound sample (in seconds).
-        expected_time = float(len(data)) / (ssize/8) / nchannels / rate
-
-        # set parameters based on .au file headers
-        dsp.setparameters(AFMT_S16_NE, nchannels, rate)
-        self.assertTrue(abs(expected_time - 3.51) < 1e-2, expected_time)
-        t1 = time.monotonic()
-        dsp.write(data)
-        dsp.close()
-        t2 = time.monotonic()
-        elapsed_time = t2 - t1
-
-        percent_diff = (abs(elapsed_time - expected_time) / expected_time) * 100
-        self.assertTrue(percent_diff <= 10.0,
-                        "elapsed time (%s) > 10%% off of expected time (%s)" %
-                        (elapsed_time, expected_time))
-
-    def set_parameters(self, dsp):
-        # Two configurations for testing:
-        #   config1 (8-bit, mono, 8 kHz) should work on even the most
-        #      ancient and crufty sound card, but maybe not on special-
-        #      purpose high-end hardware
-        #   config2 (16-bit, stereo, 44.1kHz) should work on all but the
-        #      most ancient and crufty hardware
-        config1 = (ossaudiodev.AFMT_U8, 1, 8000)
-        config2 = (AFMT_S16_NE, 2, 44100)
-
-        for config in [config1, config2]:
-            (fmt, channels, rate) = config
-            if (dsp.setfmt(fmt) == fmt and
-                dsp.channels(channels) == channels and
-                dsp.speed(rate) == rate):
-                break
-        else:
-            raise RuntimeError("unable to set audio sampling parameters: "
-                               "you must have really weird audio hardware")
-
-        # setparameters() should be able to set this configuration in
-        # either strict or non-strict mode.
-        result = dsp.setparameters(fmt, channels, rate, False)
-        self.assertEqual(result, (fmt, channels, rate),
-                         "setparameters%r: returned %r" % (config, result))
-
-        result = dsp.setparameters(fmt, channels, rate, True)
-        self.assertEqual(result, (fmt, channels, rate),
-                         "setparameters%r: returned %r" % (config, result))
-
-    def set_bad_parameters(self, dsp):
-        # Now try some configurations that are presumably bogus: eg. 300
-        # channels currently exceeds even Hollywood's ambitions, and
-        # negative sampling rate is utter nonsense.  setparameters() should
-        # accept these in non-strict mode, returning something other than
-        # was requested, but should barf in strict mode.
-        fmt = AFMT_S16_NE
-        rate = 44100
-        channels = 2
-        for config in [(fmt, 300, rate),       # ridiculous nchannels
-                       (fmt, -5, rate),        # impossible nchannels
-                       (fmt, channels, -50),   # impossible rate
-                      ]:
-            (fmt, channels, rate) = config
-            result = dsp.setparameters(fmt, channels, rate, False)
-            self.assertNotEqual(result, config,
-                             "unexpectedly got requested configuration")
-
-            try:
-                result = dsp.setparameters(fmt, channels, rate, True)
-            except ossaudiodev.OSSAudioError as err:
-                pass
-            else:
-                self.fail("expected OSSAudioError")
-
-    def test_playback(self):
-        sound_info = read_sound_file(findfile('audiotest.au'))
-        self.play_sound_file(*sound_info)
-
-    def test_set_parameters(self):
-        dsp = ossaudiodev.open("w")
-        try:
-            self.set_parameters(dsp)
-
-            # Disabled because it fails under Linux 2.6 with ALSA's OSS
-            # emulation layer.
-            #self.set_bad_parameters(dsp)
-        finally:
-            dsp.close()
-            self.assertTrue(dsp.closed)
-
-    def test_mixer_methods(self):
-        # Issue #8139: ossaudiodev didn't initialize its types properly,
-        # therefore some methods were unavailable.
-        with ossaudiodev.openmixer() as mixer:
-            self.assertGreaterEqual(mixer.fileno(), 0)
-
-    def test_with(self):
-        with ossaudiodev.open('w') as dsp:
-            pass
-        self.assertTrue(dsp.closed)
-
-    def test_on_closed(self):
-        dsp = ossaudiodev.open('w')
-        dsp.close()
-        self.assertRaises(ValueError, dsp.fileno)
-        self.assertRaises(ValueError, dsp.read, 1)
-        self.assertRaises(ValueError, dsp.write, b'x')
-        self.assertRaises(ValueError, dsp.writeall, b'x')
-        self.assertRaises(ValueError, dsp.bufsize)
-        self.assertRaises(ValueError, dsp.obufcount)
-        self.assertRaises(ValueError, dsp.obufcount)
-        self.assertRaises(ValueError, dsp.obuffree)
-        self.assertRaises(ValueError, dsp.getptr)
-
-        mixer = ossaudiodev.openmixer()
-        mixer.close()
-        self.assertRaises(ValueError, mixer.fileno)
-
-def setUpModule():
-    try:
-        dsp = ossaudiodev.open('w')
-    except (ossaudiodev.error, OSError) as msg:
-        if msg.args[0] in (errno.EACCES, errno.ENOENT,
-                           errno.ENODEV, errno.EBUSY):
-            raise unittest.SkipTest(msg)
-        raise
-    dsp.close()
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index 67ca4795962b3e..a1acba406ea37c 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -1,4 +1,3 @@
-import contextlib
 import collections.abc
 import io
 import os
@@ -6,11 +5,13 @@
 import errno
 import pathlib
 import pickle
+import posixpath
 import socket
 import stat
 import tempfile
 import unittest
 from unittest import mock
+from urllib.request import pathname2url
 
 from test.support import import_helper
 from test.support import set_recursion_limit
@@ -24,20 +25,59 @@
     grp = pwd = None
 
 
+class UnsupportedOperationTest(unittest.TestCase):
+    def test_is_notimplemented(self):
+        self.assertTrue(issubclass(pathlib.UnsupportedOperation, NotImplementedError))
+        self.assertTrue(isinstance(pathlib.UnsupportedOperation(), NotImplementedError))
+
+
+# Make sure any symbolic links in the base test path are resolved.
+BASE = os.path.realpath(TESTFN)
+join = lambda *x: os.path.join(BASE, *x)
+rel_join = lambda *x: os.path.join(TESTFN, *x)
+
+only_nt = unittest.skipIf(os.name != 'nt',
+                          'test requires a Windows-compatible system')
+only_posix = unittest.skipIf(os.name == 'nt',
+                             'test requires a POSIX-compatible system')
+
+root_in_posix = False
+if hasattr(os, 'geteuid'):
+    root_in_posix = (os.geteuid() == 0)
+
 #
 # Tests for the pure classes.
 #
 
-class _BasePurePathSubclass(object):
-    def __init__(self, *pathsegments, session_id):
-        super().__init__(*pathsegments)
-        self.session_id = session_id
 
-    def with_segments(self, *pathsegments):
-        return type(self)(*pathsegments, session_id=self.session_id)
+class PurePathBaseTest(unittest.TestCase):
+    cls = pathlib._abc.PurePathBase
+
+    def test_magic_methods(self):
+        P = self.cls
+        self.assertFalse(hasattr(P, '__fspath__'))
+        self.assertFalse(hasattr(P, '__bytes__'))
+        self.assertIs(P.__reduce__, object.__reduce__)
+        self.assertIs(P.__hash__, object.__hash__)
+        self.assertIs(P.__eq__, object.__eq__)
+        self.assertIs(P.__lt__, object.__lt__)
+        self.assertIs(P.__le__, object.__le__)
+        self.assertIs(P.__gt__, object.__gt__)
+        self.assertIs(P.__ge__, object.__ge__)
+
+
+class DummyPurePath(pathlib._abc.PurePathBase):
+    def __eq__(self, other):
+        if not isinstance(other, DummyPurePath):
+            return NotImplemented
+        return str(self) == str(other)
+
+    def __hash__(self):
+        return hash(str(self))
 
 
-class _BasePurePathTest(object):
+class DummyPurePathTest(unittest.TestCase):
+    cls = DummyPurePath
 
     # Keys are canonical paths, values are list of tuples of arguments
     # supposed to produce equal paths.
@@ -57,9 +97,9 @@ class _BasePurePathTest(object):
 
     def setUp(self):
         p = self.cls('a')
-        self.flavour = p._flavour
-        self.sep = self.flavour.sep
-        self.altsep = self.flavour.altsep
+        self.pathmod = p.pathmod
+        self.sep = self.pathmod.sep
+        self.altsep = self.pathmod.altsep
 
     def test_constructor_common(self):
         P = self.cls
@@ -69,39 +109,37 @@ def test_constructor_common(self):
         P('/a', 'b', 'c')
         P('a/b/c')
         P('/a/b/c')
-        P(FakePath("a/b/c"))
-        self.assertEqual(P(P('a')), P('a'))
-        self.assertEqual(P(P('a'), 'b'), P('a/b'))
-        self.assertEqual(P(P('a'), P('b')), P('a/b'))
-        self.assertEqual(P(P('a'), P('b'), P('c')), P(FakePath("a/b/c")))
-        self.assertEqual(P(P('./a:b')), P('./a:b'))
 
-    def test_bytes(self):
-        P = self.cls
-        message = (r"argument should be a str or an os\.PathLike object "
-                   r"where __fspath__ returns a str, not 'bytes'")
-        with self.assertRaisesRegex(TypeError, message):
-            P(b'a')
-        with self.assertRaisesRegex(TypeError, message):
-            P(b'a', 'b')
-        with self.assertRaisesRegex(TypeError, message):
-            P('a', b'b')
-        with self.assertRaises(TypeError):
-            P('a').joinpath(b'b')
-        with self.assertRaises(TypeError):
-            P('a') / b'b'
-        with self.assertRaises(TypeError):
-            b'a' / P('b')
-        with self.assertRaises(TypeError):
-            P('a').match(b'b')
+    def test_concrete_class(self):
+        if self.cls is pathlib.PurePath:
+            expected = pathlib.PureWindowsPath if os.name == 'nt' else pathlib.PurePosixPath
+        else:
+            expected = self.cls
+        p = self.cls('a')
+        self.assertIs(type(p), expected)
+
+    def test_different_pathmods_unequal(self):
+        p = self.cls('a')
+        if p.pathmod is posixpath:
+            q = pathlib.PureWindowsPath('a')
+        else:
+            q = pathlib.PurePosixPath('a')
+        self.assertNotEqual(p, q)
+
+    def test_different_pathmods_unordered(self):
+        p = self.cls('a')
+        if p.pathmod is posixpath:
+            q = pathlib.PureWindowsPath('a')
+        else:
+            q = pathlib.PurePosixPath('a')
         with self.assertRaises(TypeError):
-            P('a').relative_to(b'b')
+            p < q
         with self.assertRaises(TypeError):
-            P('a').with_name(b'b')
+            p <= q
         with self.assertRaises(TypeError):
-            P('a').with_stem(b'b')
+            p > q
         with self.assertRaises(TypeError):
-            P('a').with_suffix(b'b')
+            p >= q
 
     def _check_str_subclass(self, *args):
         # Issue #21127: it should be possible to construct a PurePath object
@@ -123,8 +161,13 @@ def test_str_subclass_common(self):
         self._check_str_subclass('/a/b.txt')
 
     def test_with_segments_common(self):
-        class P(_BasePurePathSubclass, self.cls):
-            pass
+        class P(self.cls):
+            def __init__(self, *pathsegments, session_id):
+                super().__init__(*pathsegments)
+                self.session_id = session_id
+
+            def with_segments(self, *pathsegments):
+                return type(self)(*pathsegments, session_id=self.session_id)
         p = P('foo', 'bar', session_id=42)
         self.assertEqual(42, (p / 'foo').session_id)
         self.assertEqual(42, ('foo' / p).session_id)
@@ -138,45 +181,30 @@ class P(_BasePurePathSubclass, self.cls):
         for parent in p.parents:
             self.assertEqual(42, parent.session_id)
 
-    def _get_drive_root_parts(self, parts):
-        path = self.cls(*parts)
-        return path.drive, path.root, path.parts
-
-    def _check_drive_root_parts(self, arg, *expected):
-        sep = self.flavour.sep
-        actual = self._get_drive_root_parts([x.replace('/', sep) for x in arg])
+    def _check_parse_path(self, raw_path, *expected):
+        sep = self.pathmod.sep
+        actual = self.cls._parse_path(raw_path.replace('/', sep))
         self.assertEqual(actual, expected)
-        if altsep := self.flavour.altsep:
-            actual = self._get_drive_root_parts([x.replace('/', altsep) for x in arg])
+        if altsep := self.pathmod.altsep:
+            actual = self.cls._parse_path(raw_path.replace('/', altsep))
             self.assertEqual(actual, expected)
 
-    def test_drive_root_parts_common(self):
-        check = self._check_drive_root_parts
-        sep = self.flavour.sep
-        # Unanchored parts.
-        check((),                   '', '', ())
-        check(('a',),               '', '', ('a',))
-        check(('a/',),              '', '', ('a',))
-        check(('a', 'b'),           '', '', ('a', 'b'))
-        # Expansion.
-        check(('a/b',),             '', '', ('a', 'b'))
-        check(('a/b/',),            '', '', ('a', 'b'))
-        check(('a', 'b/c', 'd'),    '', '', ('a', 'b', 'c', 'd'))
-        # Collapsing and stripping excess slashes.
-        check(('a', 'b//c', 'd'),   '', '', ('a', 'b', 'c', 'd'))
-        check(('a', 'b/c/', 'd'),   '', '', ('a', 'b', 'c', 'd'))
-        # Eliminating standalone dots.
-        check(('.',),               '', '', ())
-        check(('.', '.', 'b'),      '', '', ('b',))
-        check(('a', '.', 'b'),      '', '', ('a', 'b'))
-        check(('a', '.', '.'),      '', '', ('a',))
-        # The first part is anchored.
-        check(('/a/b',),            '', sep, (sep, 'a', 'b'))
-        check(('/a', 'b'),          '', sep, (sep, 'a', 'b'))
-        check(('/a/', 'b'),         '', sep, (sep, 'a', 'b'))
-        # Ignoring parts before an anchored part.
-        check(('a', '/b', 'c'),     '', sep, (sep, 'b', 'c'))
-        check(('a', '/b', '/c'),    '', sep, (sep, 'c'))
+    def test_parse_path_common(self):
+        check = self._check_parse_path
+        sep = self.pathmod.sep
+        check('',         '', '', [])
+        check('a',        '', '', ['a'])
+        check('a/',       '', '', ['a'])
+        check('a/b',      '', '', ['a', 'b'])
+        check('a/b/',     '', '', ['a', 'b'])
+        check('a/b/c/d',  '', '', ['a', 'b', 'c', 'd'])
+        check('a/b//c/d', '', '', ['a', 'b', 'c', 'd'])
+        check('a/b/c/d',  '', '', ['a', 'b', 'c', 'd'])
+        check('.',        '', '', [])
+        check('././b',    '', '', ['b'])
+        check('a/./b',    '', '', ['a', 'b'])
+        check('a/./.',    '', '', ['a'])
+        check('/a/b',     '', sep, ['a', 'b'])
 
     def test_join_common(self):
         P = self.cls
@@ -186,8 +214,6 @@ def test_join_common(self):
         self.assertIs(type(pp), type(p))
         pp = p.joinpath('c', 'd')
         self.assertEqual(pp, P('a/b/c/d'))
-        pp = p.joinpath(P('c'))
-        self.assertEqual(pp, P('a/b/c'))
         pp = p.joinpath('/c')
         self.assertEqual(pp, P('/c'))
 
@@ -204,8 +230,6 @@ def test_div_common(self):
         self.assertEqual(pp, P('a/b/c/d'))
         pp = 'c' / p / 'd'
         self.assertEqual(pp, P('c/a/b/d'))
-        pp = p / P('c')
-        self.assertEqual(pp, P('a/b/c'))
         pp = p/ '/c'
         self.assertEqual(pp, P('/c'))
 
@@ -227,18 +251,6 @@ def test_as_posix_common(self):
             self.assertEqual(P(pathstr).as_posix(), pathstr)
         # Other tests for as_posix() are in test_equivalences().
 
-    def test_as_bytes_common(self):
-        sep = os.fsencode(self.sep)
-        P = self.cls
-        self.assertEqual(bytes(P('a/b')), b'a' + sep + b'b')
-
-    def test_as_uri_common(self):
-        P = self.cls
-        with self.assertRaises(ValueError):
-            P('a').as_uri()
-        with self.assertRaises(ValueError):
-            P().as_uri()
-
     def test_repr_common(self):
         for pathstr in ('a', 'a/b', 'a/b/c', '/', '/a/b', '/a/b/c'):
             with self.subTest(pathstr=pathstr):
@@ -251,17 +263,6 @@ def test_repr_common(self):
                 inner = r[len(clsname) + 1 : -1]
                 self.assertEqual(eval(inner), p.as_posix())
 
-    def test_repr_roundtrips(self):
-        for pathstr in ('a', 'a/b', 'a/b/c', '/', '/a/b', '/a/b/c'):
-            with self.subTest(pathstr=pathstr):
-                p = self.cls(pathstr)
-                r = repr(p)
-                # The repr() roundtrips.
-                q = eval(r, pathlib.__dict__)
-                self.assertIs(q.__class__, p.__class__)
-                self.assertEqual(q, p)
-                self.assertEqual(repr(q), r)
-
     def test_eq_common(self):
         P = self.cls
         self.assertEqual(P('a/b'), P('a/b'))
@@ -310,36 +311,39 @@ def test_match_common(self):
         self.assertFalse(P('/ab.py').match('/a/*.py'))
         self.assertFalse(P('/a/b/c.py').match('/a/*.py'))
         # Multi-part glob-style pattern.
-        self.assertFalse(P('/a/b/c.py').match('/**/*.py'))
+        self.assertTrue(P('a').match('**'))
+        self.assertTrue(P('c.py').match('**'))
+        self.assertTrue(P('a/b/c.py').match('**'))
+        self.assertTrue(P('/a/b/c.py').match('**'))
+        self.assertTrue(P('/a/b/c.py').match('/**'))
+        self.assertTrue(P('/a/b/c.py').match('**/'))
+        self.assertTrue(P('/a/b/c.py').match('/a/**'))
+        self.assertTrue(P('/a/b/c.py').match('**/*.py'))
+        self.assertTrue(P('/a/b/c.py').match('/**/*.py'))
         self.assertTrue(P('/a/b/c.py').match('/a/**/*.py'))
-
-    def test_ordering_common(self):
-        # Ordering is tuple-alike.
-        def assertLess(a, b):
-            self.assertLess(a, b)
-            self.assertGreater(b, a)
-        P = self.cls
-        a = P('a')
-        b = P('a/b')
-        c = P('abc')
-        d = P('b')
-        assertLess(a, b)
-        assertLess(a, c)
-        assertLess(a, d)
-        assertLess(b, c)
-        assertLess(c, d)
-        P = self.cls
-        a = P('/a')
-        b = P('/a/b')
-        c = P('/abc')
-        d = P('/b')
-        assertLess(a, b)
-        assertLess(a, c)
-        assertLess(a, d)
-        assertLess(b, c)
-        assertLess(c, d)
-        with self.assertRaises(TypeError):
-            P() < {}
+        self.assertTrue(P('/a/b/c.py').match('/a/b/**/*.py'))
+        self.assertTrue(P('/a/b/c.py').match('/**/**/**/**/*.py'))
+        self.assertFalse(P('c.py').match('**/a.py'))
+        self.assertFalse(P('c.py').match('c/**'))
+        self.assertFalse(P('a/b/c.py').match('**/a'))
+        self.assertFalse(P('a/b/c.py').match('**/a/b'))
+        self.assertFalse(P('a/b/c.py').match('**/a/b/c'))
+        self.assertFalse(P('a/b/c.py').match('**/a/b/c.'))
+        self.assertFalse(P('a/b/c.py').match('**/a/b/c./**'))
+        self.assertFalse(P('a/b/c.py').match('**/a/b/c./**'))
+        self.assertFalse(P('a/b/c.py').match('/a/b/c.py/**'))
+        self.assertFalse(P('a/b/c.py').match('/**/a/b/c.py'))
+        self.assertRaises(ValueError, P('a').match, '**a/b/c')
+        self.assertRaises(ValueError, P('a').match, 'a/b/c**')
+        # Case-sensitive flag
+        self.assertFalse(P('A.py').match('a.PY', case_sensitive=True))
+        self.assertTrue(P('A.py').match('a.PY', case_sensitive=False))
+        self.assertFalse(P('c:/a/B.Py').match('C:/A/*.pY', case_sensitive=True))
+        self.assertTrue(P('/a/b/c.py').match('/A/*/*.Py', case_sensitive=False))
+        # Matching against empty path
+        self.assertFalse(P().match('*'))
+        self.assertTrue(P().match('**'))
+        self.assertFalse(P().match('**/*'))
 
     def test_parts_common(self):
         # `parts` returns a tuple.
@@ -353,12 +357,6 @@ def test_parts_common(self):
         parts = p.parts
         self.assertEqual(parts, (sep, 'a', 'b'))
 
-    def test_fspath_common(self):
-        P = self.cls
-        p = P('a/b')
-        self._check_str(p.__fspath__(), ('a/b',))
-        self._check_str(os.fspath(p), ('a/b',))
-
     def test_equivalences(self):
         for k, tuples in self.equivalences.items():
             canon = k.replace('/', self.sep)
@@ -537,6 +535,7 @@ def test_with_name_common(self):
         self.assertRaises(ValueError, P('.').with_name, 'd.xml')
         self.assertRaises(ValueError, P('/').with_name, 'd.xml')
         self.assertRaises(ValueError, P('a/b').with_name, '')
+        self.assertRaises(ValueError, P('a/b').with_name, '.')
         self.assertRaises(ValueError, P('a/b').with_name, '/c')
         self.assertRaises(ValueError, P('a/b').with_name, 'c/')
         self.assertRaises(ValueError, P('a/b').with_name, 'c/d')
@@ -554,6 +553,7 @@ def test_with_stem_common(self):
         self.assertRaises(ValueError, P('.').with_stem, 'd')
         self.assertRaises(ValueError, P('/').with_stem, 'd')
         self.assertRaises(ValueError, P('a/b').with_stem, '')
+        self.assertRaises(ValueError, P('a/b').with_stem, '.')
         self.assertRaises(ValueError, P('a/b').with_stem, '/c')
         self.assertRaises(ValueError, P('a/b').with_stem, 'c/')
         self.assertRaises(ValueError, P('a/b').with_stem, 'c/d')
@@ -580,8 +580,6 @@ def test_with_suffix_common(self):
         self.assertRaises(ValueError, P('a/b').with_suffix, '.c/.d')
         self.assertRaises(ValueError, P('a/b').with_suffix, './.d')
         self.assertRaises(ValueError, P('a/b').with_suffix, '.d/.')
-        self.assertRaises(ValueError, P('a/b').with_suffix,
-                          (self.flavour.sep, 'd'))
 
     def test_relative_to_common(self):
         P = self.cls
@@ -617,8 +615,14 @@ def test_relative_to_common(self):
         self.assertRaises(ValueError, p.relative_to, P('a/b/c'))
         self.assertRaises(ValueError, p.relative_to, P('a/c'))
         self.assertRaises(ValueError, p.relative_to, P('/a'))
+        self.assertRaises(ValueError, p.relative_to, P("../a"))
+        self.assertRaises(ValueError, p.relative_to, P("a/.."))
+        self.assertRaises(ValueError, p.relative_to, P("/a/.."))
         self.assertRaises(ValueError, p.relative_to, P('/'), walk_up=True)
         self.assertRaises(ValueError, p.relative_to, P('/a'), walk_up=True)
+        self.assertRaises(ValueError, p.relative_to, P("../a"), walk_up=True)
+        self.assertRaises(ValueError, p.relative_to, P("a/.."), walk_up=True)
+        self.assertRaises(ValueError, p.relative_to, P("/a/.."), walk_up=True)
         p = P('/a/b')
         self.assertEqual(p.relative_to(P('/')), P('a/b'))
         self.assertEqual(p.relative_to('/'), P('a/b'))
@@ -647,8 +651,14 @@ def test_relative_to_common(self):
         self.assertRaises(ValueError, p.relative_to, P())
         self.assertRaises(ValueError, p.relative_to, '')
         self.assertRaises(ValueError, p.relative_to, P('a'))
+        self.assertRaises(ValueError, p.relative_to, P("../a"))
+        self.assertRaises(ValueError, p.relative_to, P("a/.."))
+        self.assertRaises(ValueError, p.relative_to, P("/a/.."))
         self.assertRaises(ValueError, p.relative_to, P(''), walk_up=True)
         self.assertRaises(ValueError, p.relative_to, P('a'), walk_up=True)
+        self.assertRaises(ValueError, p.relative_to, P("../a"), walk_up=True)
+        self.assertRaises(ValueError, p.relative_to, P("a/.."), walk_up=True)
+        self.assertRaises(ValueError, p.relative_to, P("/a/.."), walk_up=True)
 
     def test_is_relative_to_common(self):
         P = self.cls
@@ -685,6 +695,29 @@ def test_is_relative_to_common(self):
         self.assertFalse(p.is_relative_to(''))
         self.assertFalse(p.is_relative_to(P('a')))
 
+
+class PurePathTest(DummyPurePathTest):
+    cls = pathlib.PurePath
+
+    def test_constructor_nested(self):
+        P = self.cls
+        P(FakePath("a/b/c"))
+        self.assertEqual(P(P('a')), P('a'))
+        self.assertEqual(P(P('a'), 'b'), P('a/b'))
+        self.assertEqual(P(P('a'), P('b')), P('a/b'))
+        self.assertEqual(P(P('a'), P('b'), P('c')), P(FakePath("a/b/c")))
+        self.assertEqual(P(P('./a:b')), P('./a:b'))
+
+    def test_join_nested(self):
+        P = self.cls
+        p = P('a/b').joinpath(P('c'))
+        self.assertEqual(p, P('a/b/c'))
+
+    def test_div_nested(self):
+        P = self.cls
+        p = P('a/b') / P('c')
+        self.assertEqual(p, P('a/b/c'))
+
     def test_pickling_common(self):
         P = self.cls
         p = P('/a/b')
@@ -696,21 +729,105 @@ def test_pickling_common(self):
             self.assertEqual(hash(pp), hash(p))
             self.assertEqual(str(pp), str(p))
 
+    def test_fspath_common(self):
+        P = self.cls
+        p = P('a/b')
+        self._check_str(p.__fspath__(), ('a/b',))
+        self._check_str(os.fspath(p), ('a/b',))
+
+    def test_bytes(self):
+        P = self.cls
+        message = (r"argument should be a str or an os\.PathLike object "
+                   r"where __fspath__ returns a str, not 'bytes'")
+        with self.assertRaisesRegex(TypeError, message):
+            P(b'a')
+        with self.assertRaisesRegex(TypeError, message):
+            P(b'a', 'b')
+        with self.assertRaisesRegex(TypeError, message):
+            P('a', b'b')
+        with self.assertRaises(TypeError):
+            P('a').joinpath(b'b')
+        with self.assertRaises(TypeError):
+            P('a') / b'b'
+        with self.assertRaises(TypeError):
+            b'a' / P('b')
+        with self.assertRaises(TypeError):
+            P('a').match(b'b')
+        with self.assertRaises(TypeError):
+            P('a').relative_to(b'b')
+        with self.assertRaises(TypeError):
+            P('a').with_name(b'b')
+        with self.assertRaises(TypeError):
+            P('a').with_stem(b'b')
+        with self.assertRaises(TypeError):
+            P('a').with_suffix(b'b')
+
+    def test_as_bytes_common(self):
+        sep = os.fsencode(self.sep)
+        P = self.cls
+        self.assertEqual(bytes(P('a/b')), b'a' + sep + b'b')
+
+    def test_ordering_common(self):
+        # Ordering is tuple-alike.
+        def assertLess(a, b):
+            self.assertLess(a, b)
+            self.assertGreater(b, a)
+        P = self.cls
+        a = P('a')
+        b = P('a/b')
+        c = P('abc')
+        d = P('b')
+        assertLess(a, b)
+        assertLess(a, c)
+        assertLess(a, d)
+        assertLess(b, c)
+        assertLess(c, d)
+        P = self.cls
+        a = P('/a')
+        b = P('/a/b')
+        c = P('/abc')
+        d = P('/b')
+        assertLess(a, b)
+        assertLess(a, c)
+        assertLess(a, d)
+        assertLess(b, c)
+        assertLess(c, d)
+        with self.assertRaises(TypeError):
+            P() < {}
+
+    def test_as_uri_common(self):
+        P = self.cls
+        with self.assertRaises(ValueError):
+            P('a').as_uri()
+        with self.assertRaises(ValueError):
+            P().as_uri()
+
+    def test_repr_roundtrips(self):
+        for pathstr in ('a', 'a/b', 'a/b/c', '/', '/a/b', '/a/b/c'):
+            with self.subTest(pathstr=pathstr):
+                p = self.cls(pathstr)
+                r = repr(p)
+                # The repr() roundtrips.
+                q = eval(r, pathlib.__dict__)
+                self.assertIs(q.__class__, p.__class__)
+                self.assertEqual(q, p)
+                self.assertEqual(repr(q), r)
+
 
-class PurePosixPathTest(_BasePurePathTest, unittest.TestCase):
+class PurePosixPathTest(PurePathTest):
     cls = pathlib.PurePosixPath
 
-    def test_drive_root_parts(self):
-        check = self._check_drive_root_parts
+    def test_parse_path(self):
+        check = self._check_parse_path
         # Collapsing of excess leading slashes, except for the double-slash
         # special case.
-        check(('//a', 'b'),             '', '//', ('//', 'a', 'b'))
-        check(('///a', 'b'),            '', '/', ('/', 'a', 'b'))
-        check(('////a', 'b'),           '', '/', ('/', 'a', 'b'))
+        check('//a/b',   '', '//', ['a', 'b'])
+        check('///a/b',  '', '/', ['a', 'b'])
+        check('////a/b', '', '/', ['a', 'b'])
         # Paths which look like NT paths aren't treated specially.
-        check(('c:a',),                 '', '', ('c:a',))
-        check(('c:\\a',),               '', '', ('c:\\a',))
-        check(('\\a',),                 '', '', ('\\a',))
+        check('c:a',     '', '', ['c:a',])
+        check('c:\\a',   '', '', ['c:\\a',])
+        check('\\a',     '', '', ['\\a',])
 
     def test_root(self):
         P = self.cls
@@ -784,11 +901,17 @@ def test_div(self):
         pp = P('//a') / '/c'
         self.assertEqual(pp, P('/c'))
 
+    def test_parse_windows_path(self):
+        P = self.cls
+        p = P('c:', 'a', 'b')
+        pp = P(pathlib.PureWindowsPath('c:\\a\\b'))
+        self.assertEqual(p, pp)
+
 
-class PureWindowsPathTest(_BasePurePathTest, unittest.TestCase):
+class PureWindowsPathTest(PurePathTest):
     cls = pathlib.PureWindowsPath
 
-    equivalences = _BasePurePathTest.equivalences.copy()
+    equivalences = PurePathTest.equivalences.copy()
     equivalences.update({
         './a:b': [ ('./a:b',) ],
         'c:a': [ ('c:', 'a'), ('c:', 'a/'), ('.', 'c:', 'a') ],
@@ -802,67 +925,53 @@ class PureWindowsPathTest(_BasePurePathTest, unittest.TestCase):
             ],
     })
 
-    def test_drive_root_parts(self):
-        check = self._check_drive_root_parts
+    def test_parse_path(self):
+        check = self._check_parse_path
         # First part is anchored.
-        check(('c:',),                  'c:', '', ('c:',))
-        check(('c:/',),                 'c:', '\\', ('c:\\',))
-        check(('/',),                   '', '\\', ('\\',))
-        check(('c:a',),                 'c:', '', ('c:', 'a'))
-        check(('c:/a',),                'c:', '\\', ('c:\\', 'a'))
-        check(('/a',),                  '', '\\', ('\\', 'a'))
+        check('c:',                  'c:', '', [])
+        check('c:/',                 'c:', '\\', [])
+        check('/',                   '', '\\', [])
+        check('c:a',                 'c:', '', ['a'])
+        check('c:/a',                'c:', '\\', ['a'])
+        check('/a',                  '', '\\', ['a'])
         # UNC paths.
-        check(('//',),                  '\\\\', '', ('\\\\',))
-        check(('//a',),                 '\\\\a', '', ('\\\\a',))
-        check(('//a/',),                '\\\\a\\', '', ('\\\\a\\',))
-        check(('//a/b',),               '\\\\a\\b', '\\', ('\\\\a\\b\\',))
-        check(('//a/b/',),              '\\\\a\\b', '\\', ('\\\\a\\b\\',))
-        check(('//a/b/c',),             '\\\\a\\b', '\\', ('\\\\a\\b\\', 'c'))
-        # Second part is anchored, so that the first part is ignored.
-        check(('a', 'Z:b', 'c'),        'Z:', '', ('Z:', 'b', 'c'))
-        check(('a', 'Z:/b', 'c'),       'Z:', '\\', ('Z:\\', 'b', 'c'))
-        # UNC paths.
-        check(('a', '//b/c', 'd'),      '\\\\b\\c', '\\', ('\\\\b\\c\\', 'd'))
+        check('//',                  '\\\\', '', [])
+        check('//a',                 '\\\\a', '', [])
+        check('//a/',                '\\\\a\\', '', [])
+        check('//a/b',               '\\\\a\\b', '\\', [])
+        check('//a/b/',              '\\\\a\\b', '\\', [])
+        check('//a/b/c',             '\\\\a\\b', '\\', ['c'])
         # Collapsing and stripping excess slashes.
-        check(('a', 'Z://b//c/', 'd/'), 'Z:', '\\', ('Z:\\', 'b', 'c', 'd'))
+        check('Z://b//c/d/',         'Z:', '\\', ['b', 'c', 'd'])
         # UNC paths.
-        check(('a', '//b/c//', 'd'),    '\\\\b\\c', '\\', ('\\\\b\\c\\', 'd'))
+        check('//b/c//d',            '\\\\b\\c', '\\', ['d'])
         # Extended paths.
-        check(('//./c:',),              '\\\\.\\c:', '', ('\\\\.\\c:',))
-        check(('//?/c:/',),             '\\\\?\\c:', '\\', ('\\\\?\\c:\\',))
-        check(('//?/c:/a',),            '\\\\?\\c:', '\\', ('\\\\?\\c:\\', 'a'))
-        check(('//?/c:/a', '/b'),       '\\\\?\\c:', '\\', ('\\\\?\\c:\\', 'b'))
+        check('//./c:',              '\\\\.\\c:', '', [])
+        check('//?/c:/',             '\\\\?\\c:', '\\', [])
+        check('//?/c:/a',            '\\\\?\\c:', '\\', ['a'])
         # Extended UNC paths (format is "\\?\UNC\server\share").
-        check(('//?',),                 '\\\\?', '', ('\\\\?',))
-        check(('//?/',),                '\\\\?\\', '', ('\\\\?\\',))
-        check(('//?/UNC',),             '\\\\?\\UNC', '', ('\\\\?\\UNC',))
-        check(('//?/UNC/',),            '\\\\?\\UNC\\', '', ('\\\\?\\UNC\\',))
-        check(('//?/UNC/b',),           '\\\\?\\UNC\\b', '', ('\\\\?\\UNC\\b',))
-        check(('//?/UNC/b/',),          '\\\\?\\UNC\\b\\', '', ('\\\\?\\UNC\\b\\',))
-        check(('//?/UNC/b/c',),         '\\\\?\\UNC\\b\\c', '\\', ('\\\\?\\UNC\\b\\c\\',))
-        check(('//?/UNC/b/c/',),        '\\\\?\\UNC\\b\\c', '\\', ('\\\\?\\UNC\\b\\c\\',))
-        check(('//?/UNC/b/c/d',),       '\\\\?\\UNC\\b\\c', '\\', ('\\\\?\\UNC\\b\\c\\', 'd'))
+        check('//?',                 '\\\\?', '', [])
+        check('//?/',                '\\\\?\\', '', [])
+        check('//?/UNC',             '\\\\?\\UNC', '', [])
+        check('//?/UNC/',            '\\\\?\\UNC\\', '', [])
+        check('//?/UNC/b',           '\\\\?\\UNC\\b', '', [])
+        check('//?/UNC/b/',          '\\\\?\\UNC\\b\\', '', [])
+        check('//?/UNC/b/c',         '\\\\?\\UNC\\b\\c', '\\', [])
+        check('//?/UNC/b/c/',        '\\\\?\\UNC\\b\\c', '\\', [])
+        check('//?/UNC/b/c/d',       '\\\\?\\UNC\\b\\c', '\\', ['d'])
         # UNC device paths
-        check(('//./BootPartition/',),   '\\\\.\\BootPartition', '\\', ('\\\\.\\BootPartition\\',))
-        check(('//?/BootPartition/',),   '\\\\?\\BootPartition', '\\', ('\\\\?\\BootPartition\\',))
-        check(('//./PhysicalDrive0',),   '\\\\.\\PhysicalDrive0', '', ('\\\\.\\PhysicalDrive0',))
-        check(('//?/Volume{}/',),        '\\\\?\\Volume{}', '\\', ('\\\\?\\Volume{}\\',))
-        check(('//./nul',),              '\\\\.\\nul', '', ('\\\\.\\nul',))
-        # Second part has a root but not drive.
-        check(('a', '/b', 'c'),         '', '\\', ('\\', 'b', 'c'))
-        check(('Z:/a', '/b', 'c'),      'Z:', '\\', ('Z:\\', 'b', 'c'))
-        check(('//?/Z:/a', '/b', 'c'),  '\\\\?\\Z:', '\\', ('\\\\?\\Z:\\', 'b', 'c'))
-        # Joining with the same drive => the first path is appended to if
-        # the second path is relative.
-        check(('c:/a/b', 'c:x/y'),      'c:', '\\', ('c:\\', 'a', 'b', 'x', 'y'))
-        check(('c:/a/b', 'c:/x/y'),     'c:', '\\', ('c:\\', 'x', 'y'))
+        check('//./BootPartition/',  '\\\\.\\BootPartition', '\\', [])
+        check('//?/BootPartition/',  '\\\\?\\BootPartition', '\\', [])
+        check('//./PhysicalDrive0',  '\\\\.\\PhysicalDrive0', '', [])
+        check('//?/Volume{}/',       '\\\\?\\Volume{}', '\\', [])
+        check('//./nul',             '\\\\.\\nul', '', [])
         # Paths to files with NTFS alternate data streams
-        check(('./c:s',),               '', '', ('c:s',))
-        check(('cc:s',),                '', '', ('cc:s',))
-        check(('C:c:s',),               'C:', '', ('C:', 'c:s'))
-        check(('C:/c:s',),              'C:', '\\', ('C:\\', 'c:s'))
-        check(('D:a', './c:b'),         'D:', '', ('D:', 'a', 'c:b'))
-        check(('D:/a', './c:b'),        'D:', '\\', ('D:\\', 'a', 'c:b'))
+        check('./c:s',               '', '', ['c:s'])
+        check('cc:s',                '', '', ['cc:s'])
+        check('C:c:s',               'C:', '', ['c:s'])
+        check('C:/c:s',              'C:', '\\', ['c:s'])
+        check('D:a/c:b',             'D:', '', ['a', 'c:b'])
+        check('D:/a/c:b',            'D:', '\\', ['a', 'c:b'])
 
     def test_str(self):
         p = self.cls('a/b/c')
@@ -899,6 +1008,7 @@ def test_eq(self):
         self.assertEqual(P('a/B'), P('A/b'))
         self.assertEqual(P('C:a/B'), P('c:A/b'))
         self.assertEqual(P('//Some/SHARE/a/B'), P('//somE/share/A/b'))
+        self.assertEqual(P('\u0130'), P('i\u0307'))
 
     def test_as_uri(self):
         P = self.cls
@@ -916,7 +1026,7 @@ def test_as_uri(self):
         self.assertEqual(P('//some/share/a/b%#c\xe9').as_uri(),
                          'file://some/share/a/b%25%23c%C3%A9')
 
-    def test_match_common(self):
+    def test_match(self):
         P = self.cls
         # Absolute patterns.
         self.assertTrue(P('c:/b.py').match('*:/*.py'))
@@ -1139,8 +1249,10 @@ def test_with_name(self):
         self.assertRaises(ValueError, P('c:').with_name, 'd.xml')
         self.assertRaises(ValueError, P('c:/').with_name, 'd.xml')
         self.assertRaises(ValueError, P('//My/Share').with_name, 'd.xml')
-        self.assertRaises(ValueError, P('c:a/b').with_name, 'd:')
-        self.assertRaises(ValueError, P('c:a/b').with_name, 'd:e')
+        self.assertEqual(str(P('a').with_name('d:')), '.\\d:')
+        self.assertEqual(str(P('a').with_name('d:e')), '.\\d:e')
+        self.assertEqual(P('c:a/b').with_name('d:'), P('c:a/d:'))
+        self.assertEqual(P('c:a/b').with_name('d:e'), P('c:a/d:e'))
         self.assertRaises(ValueError, P('c:a/b').with_name, 'd:/e')
         self.assertRaises(ValueError, P('c:a/b').with_name, '//My/Share')
 
@@ -1153,8 +1265,10 @@ def test_with_stem(self):
         self.assertRaises(ValueError, P('c:').with_stem, 'd')
         self.assertRaises(ValueError, P('c:/').with_stem, 'd')
         self.assertRaises(ValueError, P('//My/Share').with_stem, 'd')
-        self.assertRaises(ValueError, P('c:a/b').with_stem, 'd:')
-        self.assertRaises(ValueError, P('c:a/b').with_stem, 'd:e')
+        self.assertEqual(str(P('a').with_stem('d:')), '.\\d:')
+        self.assertEqual(str(P('a').with_stem('d:e')), '.\\d:e')
+        self.assertEqual(P('c:a/b').with_stem('d:'), P('c:a/d:'))
+        self.assertEqual(P('c:a/b').with_stem('d:e'), P('c:a/d:e'))
         self.assertRaises(ValueError, P('c:a/b').with_stem, 'd:/e')
         self.assertRaises(ValueError, P('c:a/b').with_stem, '//My/Share')
 
@@ -1458,67 +1572,194 @@ def test_is_reserved(self):
         self.assertIs(True, P('c:/baz/con/NUL').is_reserved())
         self.assertIs(False, P('c:/NUL/con/baz').is_reserved())
 
-class PurePathTest(_BasePurePathTest, unittest.TestCase):
-    cls = pathlib.PurePath
-
-    def test_concrete_class(self):
-        p = self.cls('a')
-        self.assertIs(type(p),
-            pathlib.PureWindowsPath if os.name == 'nt' else pathlib.PurePosixPath)
 
-    def test_different_flavours_unequal(self):
-        p = pathlib.PurePosixPath('a')
-        q = pathlib.PureWindowsPath('a')
-        self.assertNotEqual(p, q)
+class PurePathSubclassTest(PurePathTest):
+    class cls(pathlib.PurePath):
+        pass
 
-    def test_different_flavours_unordered(self):
-        p = pathlib.PurePosixPath('a')
-        q = pathlib.PureWindowsPath('a')
-        with self.assertRaises(TypeError):
-            p < q
-        with self.assertRaises(TypeError):
-            p <= q
-        with self.assertRaises(TypeError):
-            p > q
-        with self.assertRaises(TypeError):
-            p >= q
+    # repr() roundtripping is not supported in custom subclass.
+    test_repr_roundtrips = None
 
 
 #
-# Tests for the concrete classes.
+# Tests for the virtual classes.
 #
 
-# Make sure any symbolic links in the base test path are resolved.
-BASE = os.path.realpath(TESTFN)
-join = lambda *x: os.path.join(BASE, *x)
-rel_join = lambda *x: os.path.join(TESTFN, *x)
-
-only_nt = unittest.skipIf(os.name != 'nt',
-                          'test requires a Windows-compatible system')
-only_posix = unittest.skipIf(os.name == 'nt',
-                             'test requires a POSIX-compatible system')
+class PathBaseTest(PurePathBaseTest):
+    cls = pathlib._abc.PathBase
 
-@only_posix
-class PosixPathAsPureTest(PurePosixPathTest):
-    cls = pathlib.PosixPath
+    def test_unsupported_operation(self):
+        P = self.cls
+        p = self.cls()
+        e = pathlib.UnsupportedOperation
+        self.assertRaises(e, p.stat)
+        self.assertRaises(e, p.lstat)
+        self.assertRaises(e, p.exists)
+        self.assertRaises(e, p.samefile, 'foo')
+        self.assertRaises(e, p.is_dir)
+        self.assertRaises(e, p.is_file)
+        self.assertRaises(e, p.is_mount)
+        self.assertRaises(e, p.is_symlink)
+        self.assertRaises(e, p.is_block_device)
+        self.assertRaises(e, p.is_char_device)
+        self.assertRaises(e, p.is_fifo)
+        self.assertRaises(e, p.is_socket)
+        self.assertRaises(e, p.open)
+        self.assertRaises(e, p.read_bytes)
+        self.assertRaises(e, p.read_text)
+        self.assertRaises(e, p.write_bytes, b'foo')
+        self.assertRaises(e, p.write_text, 'foo')
+        self.assertRaises(e, p.iterdir)
+        self.assertRaises(e, p.glob, '*')
+        self.assertRaises(e, p.rglob, '*')
+        self.assertRaises(e, lambda: list(p.walk()))
+        self.assertRaises(e, p.absolute)
+        self.assertRaises(e, P.cwd)
+        self.assertRaises(e, p.expanduser)
+        self.assertRaises(e, p.home)
+        self.assertRaises(e, p.readlink)
+        self.assertRaises(e, p.symlink_to, 'foo')
+        self.assertRaises(e, p.hardlink_to, 'foo')
+        self.assertRaises(e, p.mkdir)
+        self.assertRaises(e, p.touch)
+        self.assertRaises(e, p.rename, 'foo')
+        self.assertRaises(e, p.replace, 'foo')
+        self.assertRaises(e, p.chmod, 0o755)
+        self.assertRaises(e, p.lchmod, 0o755)
+        self.assertRaises(e, p.unlink)
+        self.assertRaises(e, p.rmdir)
+        self.assertRaises(e, p.owner)
+        self.assertRaises(e, p.group)
+        self.assertRaises(e, p.as_uri)
 
-@only_nt
-class WindowsPathAsPureTest(PureWindowsPathTest):
-    cls = pathlib.WindowsPath
+    def test_as_uri_common(self):
+        e = pathlib.UnsupportedOperation
+        self.assertRaises(e, self.cls().as_uri)
 
-    def test_owner(self):
-        P = self.cls
-        with self.assertRaises(NotImplementedError):
-            P('c:/').owner()
+    def test_fspath_common(self):
+        self.assertRaises(TypeError, os.fspath, self.cls())
 
-    def test_group(self):
-        P = self.cls
-        with self.assertRaises(NotImplementedError):
-            P('c:/').group()
+    def test_as_bytes_common(self):
+        self.assertRaises(TypeError, bytes, self.cls())
 
+    def test_matches_path_api(self):
+        our_names = {name for name in dir(self.cls) if name[0] != '_'}
+        path_names = {name for name in dir(pathlib.Path) if name[0] != '_'}
+        self.assertEqual(our_names, path_names)
+        for attr_name in our_names:
+            our_attr = getattr(self.cls, attr_name)
+            path_attr = getattr(pathlib.Path, attr_name)
+            self.assertEqual(our_attr.__doc__, path_attr.__doc__)
 
-class _BasePathTest(object):
-    """Tests for the FS-accessing functionalities of the Path classes."""
+
+class DummyPathIO(io.BytesIO):
+    """
+    Used by DummyPath to implement `open('w')`
+    """
+
+    def __init__(self, files, path):
+        super().__init__()
+        self.files = files
+        self.path = path
+
+    def close(self):
+        self.files[self.path] = self.getvalue()
+        super().close()
+
+
+class DummyPath(pathlib._abc.PathBase):
+    """
+    Simple implementation of PathBase that keeps files and directories in
+    memory.
+    """
+    _files = {}
+    _directories = {}
+    _symlinks = {}
+
+    def __eq__(self, other):
+        if not isinstance(other, DummyPath):
+            return NotImplemented
+        return str(self) == str(other)
+
+    def __hash__(self):
+        return hash(str(self))
+
+    def stat(self, *, follow_symlinks=True):
+        if follow_symlinks:
+            path = str(self.resolve())
+        else:
+            path = str(self.parent.resolve() / self.name)
+        if path in self._files:
+            st_mode = stat.S_IFREG
+        elif path in self._directories:
+            st_mode = stat.S_IFDIR
+        elif path in self._symlinks:
+            st_mode = stat.S_IFLNK
+        else:
+            raise FileNotFoundError(errno.ENOENT, "Not found", str(self))
+        return os.stat_result((st_mode, hash(str(self)), 0, 0, 0, 0, 0, 0, 0, 0))
+
+    def open(self, mode='r', buffering=-1, encoding=None,
+             errors=None, newline=None):
+        if buffering != -1:
+            raise NotImplementedError
+        path_obj = self.resolve()
+        path = str(path_obj)
+        name = path_obj.name
+        parent = str(path_obj.parent)
+        if path in self._directories:
+            raise IsADirectoryError(errno.EISDIR, "Is a directory", path)
+
+        text = 'b' not in mode
+        mode = ''.join(c for c in mode if c not in 'btU')
+        if mode == 'r':
+            if path not in self._files:
+                raise FileNotFoundError(errno.ENOENT, "File not found", path)
+            stream = io.BytesIO(self._files[path])
+        elif mode == 'w':
+            if parent not in self._directories:
+                raise FileNotFoundError(errno.ENOENT, "File not found", parent)
+            stream = DummyPathIO(self._files, path)
+            self._files[path] = b''
+            self._directories[parent].add(name)
+        else:
+            raise NotImplementedError
+        if text:
+            stream = io.TextIOWrapper(stream, encoding=encoding, errors=errors, newline=newline)
+        return stream
+
+    def iterdir(self):
+        path = str(self.resolve())
+        if path in self._files:
+            raise NotADirectoryError(errno.ENOTDIR, "Not a directory", path)
+        elif path in self._directories:
+            return (self / name for name in self._directories[path])
+        else:
+            raise FileNotFoundError(errno.ENOENT, "File not found", path)
+
+    def mkdir(self, mode=0o777, parents=False, exist_ok=False):
+        path = str(self.resolve())
+        if path in self._directories:
+            if exist_ok:
+                return
+            else:
+                raise FileExistsError(errno.EEXIST, "File exists", path)
+        try:
+            if self.name:
+                self._directories[str(self.parent)].add(self.name)
+            self._directories[path] = set()
+        except KeyError:
+            if not parents:
+                raise FileNotFoundError(errno.ENOENT, "File not found", str(self.parent)) from None
+            self.parent.mkdir(parents=True, exist_ok=True)
+            self.mkdir(mode, parents=False, exist_ok=exist_ok)
+
+
+class DummyPathTest(DummyPurePathTest):
+    """Tests for PathBase methods that use stat(), open() and iterdir()."""
+
+    cls = DummyPath
+    can_symlink = False
 
     # (BASE)
     #  |
@@ -1541,50 +1782,43 @@ class _BasePathTest(object):
     #
 
     def setUp(self):
-        def cleanup():
-            os.chmod(join('dirE'), 0o777)
-            os_helper.rmtree(BASE)
-        self.addCleanup(cleanup)
-        os.mkdir(BASE)
-        os.mkdir(join('dirA'))
-        os.mkdir(join('dirB'))
-        os.mkdir(join('dirC'))
-        os.mkdir(join('dirC', 'dirD'))
-        os.mkdir(join('dirE'))
-        with open(join('fileA'), 'wb') as f:
+        super().setUp()
+        pathmod = self.cls.pathmod
+        p = self.cls(BASE)
+        p.mkdir(parents=True)
+        p.joinpath('dirA').mkdir()
+        p.joinpath('dirB').mkdir()
+        p.joinpath('dirC').mkdir()
+        p.joinpath('dirC', 'dirD').mkdir()
+        p.joinpath('dirE').mkdir()
+        with p.joinpath('fileA').open('wb') as f:
             f.write(b"this is file A\n")
-        with open(join('dirB', 'fileB'), 'wb') as f:
+        with p.joinpath('dirB', 'fileB').open('wb') as f:
             f.write(b"this is file B\n")
-        with open(join('dirC', 'fileC'), 'wb') as f:
+        with p.joinpath('dirC', 'fileC').open('wb') as f:
             f.write(b"this is file C\n")
-        with open(join('dirC', 'novel.txt'), 'wb') as f:
+        with p.joinpath('dirC', 'novel.txt').open('wb') as f:
             f.write(b"this is a novel\n")
-        with open(join('dirC', 'dirD', 'fileD'), 'wb') as f:
+        with p.joinpath('dirC', 'dirD', 'fileD').open('wb') as f:
             f.write(b"this is file D\n")
-        os.chmod(join('dirE'), 0)
-        if os_helper.can_symlink():
-            # Relative symlinks.
-            os.symlink('fileA', join('linkA'))
-            os.symlink('non-existing', join('brokenLink'))
-            self.dirlink('dirB', join('linkB'))
-            self.dirlink(os.path.join('..', 'dirB'), join('dirA', 'linkC'))
-            # This one goes upwards, creating a loop.
-            self.dirlink(os.path.join('..', 'dirB'), join('dirB', 'linkD'))
-            # Broken symlink (pointing to itself).
-            os.symlink('brokenLinkLoop',  join('brokenLinkLoop'))
-
-    if os.name == 'nt':
-        # Workaround for http://bugs.python.org/issue13772.
-        def dirlink(self, src, dest):
-            os.symlink(src, dest, target_is_directory=True)
-    else:
-        def dirlink(self, src, dest):
-            os.symlink(src, dest)
-
-    def assertSame(self, path_a, path_b):
-        self.assertTrue(os.path.samefile(str(path_a), str(path_b)),
-                        "%r and %r don't point to the same file" %
-                        (path_a, path_b))
+        if self.can_symlink:
+            p.joinpath('linkA').symlink_to('fileA')
+            p.joinpath('brokenLink').symlink_to('non-existing')
+            p.joinpath('linkB').symlink_to('dirB')
+            p.joinpath('dirA', 'linkC').symlink_to(pathmod.join('..', 'dirB'))
+            p.joinpath('dirB', 'linkD').symlink_to(pathmod.join('..', 'dirB'))
+            p.joinpath('brokenLinkLoop').symlink_to('brokenLinkLoop')
+
+    def tearDown(self):
+        cls = self.cls
+        cls._files.clear()
+        cls._directories.clear()
+        cls._symlinks.clear()
+
+    def tempdir(self):
+        path = self.cls(BASE).with_name('tmp-dirD')
+        path.mkdir()
+        return path
 
     def assertFileNotFound(self, func, *args, **kwargs):
         with self.assertRaises(FileNotFoundError) as cm:
@@ -1594,82 +1828,6 @@ def assertFileNotFound(self, func, *args, **kwargs):
     def assertEqualNormCase(self, path_a, path_b):
         self.assertEqual(os.path.normcase(path_a), os.path.normcase(path_b))
 
-    def _test_cwd(self, p):
-        q = self.cls(os.getcwd())
-        self.assertEqual(p, q)
-        self.assertEqualNormCase(str(p), str(q))
-        self.assertIs(type(p), type(q))
-        self.assertTrue(p.is_absolute())
-
-    def test_cwd(self):
-        p = self.cls.cwd()
-        self._test_cwd(p)
-
-    def test_absolute_common(self):
-        P = self.cls
-
-        with mock.patch("os.getcwd") as getcwd:
-            getcwd.return_value = BASE
-
-            # Simple relative paths.
-            self.assertEqual(str(P().absolute()), BASE)
-            self.assertEqual(str(P('.').absolute()), BASE)
-            self.assertEqual(str(P('a').absolute()), os.path.join(BASE, 'a'))
-            self.assertEqual(str(P('a', 'b', 'c').absolute()), os.path.join(BASE, 'a', 'b', 'c'))
-
-            # Symlinks should not be resolved.
-            self.assertEqual(str(P('linkB', 'fileB').absolute()), os.path.join(BASE, 'linkB', 'fileB'))
-            self.assertEqual(str(P('brokenLink').absolute()), os.path.join(BASE, 'brokenLink'))
-            self.assertEqual(str(P('brokenLinkLoop').absolute()), os.path.join(BASE, 'brokenLinkLoop'))
-
-            # '..' entries should be preserved and not normalised.
-            self.assertEqual(str(P('..').absolute()), os.path.join(BASE, '..'))
-            self.assertEqual(str(P('a', '..').absolute()), os.path.join(BASE, 'a', '..'))
-            self.assertEqual(str(P('..', 'b').absolute()), os.path.join(BASE, '..', 'b'))
-
-    def _test_home(self, p):
-        q = self.cls(os.path.expanduser('~'))
-        self.assertEqual(p, q)
-        self.assertEqualNormCase(str(p), str(q))
-        self.assertIs(type(p), type(q))
-        self.assertTrue(p.is_absolute())
-
-    @unittest.skipIf(
-        pwd is None, reason="Test requires pwd module to get homedir."
-    )
-    def test_home(self):
-        with os_helper.EnvironmentVarGuard() as env:
-            self._test_home(self.cls.home())
-
-            env.clear()
-            env['USERPROFILE'] = os.path.join(BASE, 'userprofile')
-            self._test_home(self.cls.home())
-
-            # bpo-38883: ignore `HOME` when set on windows
-            env['HOME'] = os.path.join(BASE, 'home')
-            self._test_home(self.cls.home())
-
-    def test_with_segments(self):
-        class P(_BasePurePathSubclass, self.cls):
-            pass
-        p = P(BASE, session_id=42)
-        self.assertEqual(42, p.absolute().session_id)
-        self.assertEqual(42, p.resolve().session_id)
-        if not is_wasi:  # WASI has no user accounts.
-            self.assertEqual(42, p.with_segments('~').expanduser().session_id)
-        self.assertEqual(42, (p / 'fileA').rename(p / 'fileB').session_id)
-        self.assertEqual(42, (p / 'fileB').replace(p / 'fileA').session_id)
-        if os_helper.can_symlink():
-            self.assertEqual(42, (p / 'linkA').readlink().session_id)
-        for path in p.iterdir():
-            self.assertEqual(42, path.session_id)
-        for path in p.glob('*'):
-            self.assertEqual(42, path.session_id)
-        for path in p.rglob('*'):
-            self.assertEqual(42, path.session_id)
-        for dirpath, dirnames, filenames in p.walk():
-            self.assertEqual(42, dirpath.session_id)
-
     def test_samefile(self):
         fileA_path = os.path.join(BASE, 'fileA')
         fileB_path = os.path.join(BASE, 'dirB', 'fileB')
@@ -1693,23 +1851,7 @@ def test_samefile(self):
     def test_empty_path(self):
         # The empty path points to '.'
         p = self.cls('')
-        self.assertEqual(p.stat(), os.stat('.'))
-
-    @unittest.skipIf(is_wasi, "WASI has no user accounts.")
-    def test_expanduser_common(self):
-        P = self.cls
-        p = P('~')
-        self.assertEqual(p.expanduser(), P(os.path.expanduser('~')))
-        p = P('foo')
-        self.assertEqual(p.expanduser(), p)
-        p = P('/~')
-        self.assertEqual(p.expanduser(), p)
-        p = P('../~')
-        self.assertEqual(p.expanduser(), p)
-        p = P(P('').absolute().anchor) / '~'
-        self.assertEqual(p.expanduser(), p)
-        p = P('~/a:b')
-        self.assertEqual(p.expanduser(), P(os.path.expanduser('~'), './a:b'))
+        self.assertEqual(str(p), '.')
 
     def test_exists(self):
         P = self.cls
@@ -1718,7 +1860,7 @@ def test_exists(self):
         self.assertIs(True, (p / 'dirA').exists())
         self.assertIs(True, (p / 'fileA').exists())
         self.assertIs(False, (p / 'fileA' / 'bah').exists())
-        if os_helper.can_symlink():
+        if self.can_symlink:
             self.assertIs(True, (p / 'linkA').exists())
             self.assertIs(True, (p / 'linkB').exists())
             self.assertIs(True, (p / 'linkB' / 'fileB').exists())
@@ -1738,9 +1880,6 @@ def test_open_common(self):
         with (p / 'fileA').open('rb') as f:
             self.assertIsInstance(f, io.BufferedIOBase)
             self.assertEqual(f.read().strip(), b"this is file A")
-        with (p / 'fileA').open('rb', buffering=0) as f:
-            self.assertIsInstance(f, io.RawIOBase)
-            self.assertEqual(f.read().strip(), b"this is file A")
 
     def test_read_write_bytes(self):
         p = self.cls(BASE)
@@ -1759,6 +1898,21 @@ def test_read_write_text(self):
         self.assertRaises(TypeError, (p / 'fileA').write_text, b'somebytes')
         self.assertEqual((p / 'fileA').read_text(encoding='latin-1'), 'äbcdefg')
 
+    def test_read_text_with_newlines(self):
+        p = self.cls(BASE)
+        # Check that `\n` character change nothing
+        (p / 'fileA').write_bytes(b'abcde\r\nfghlk\n\rmnopq')
+        self.assertEqual((p / 'fileA').read_text(newline='\n'),
+                         'abcde\r\nfghlk\n\rmnopq')
+        # Check that `\r` character replaces `\n`
+        (p / 'fileA').write_bytes(b'abcde\r\nfghlk\n\rmnopq')
+        self.assertEqual((p / 'fileA').read_text(newline='\r'),
+                         'abcde\r\nfghlk\n\rmnopq')
+        # Check that `\r\n` character replaces `\n`
+        (p / 'fileA').write_bytes(b'abcde\r\nfghlk\n\rmnopq')
+        self.assertEqual((p / 'fileA').read_text(newline='\r\n'),
+                             'abcde\r\nfghlk\n\rmnopq')
+
     def test_write_text_with_newlines(self):
         p = self.cls(BASE)
         # Check that `\n` character change nothing
@@ -1785,12 +1939,13 @@ def test_iterdir(self):
         it = p.iterdir()
         paths = set(it)
         expected = ['dirA', 'dirB', 'dirC', 'dirE', 'fileA']
-        if os_helper.can_symlink():
+        if self.can_symlink:
             expected += ['linkA', 'linkB', 'brokenLink', 'brokenLinkLoop']
         self.assertEqual(paths, { P(BASE, q) for q in expected })
 
-    @os_helper.skip_unless_symlink
     def test_iterdir_symlink(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         # __iter__ on a symlink to a directory.
         P = self.cls
         p = P(BASE, 'linkB')
@@ -1802,7 +1957,7 @@ def test_iterdir_nodir(self):
         # __iter__ on something that is not a directory.
         p = self.cls(BASE, 'fileA')
         with self.assertRaises(OSError) as cm:
-            next(p.iterdir())
+            p.iterdir()
         # ENOENT or EINVAL under Windows, ENOTDIR otherwise
         # (see issue #12802).
         self.assertIn(cm.exception.errno, (errno.ENOTDIR,
@@ -1818,26 +1973,31 @@ def _check(glob, expected):
         _check(it, ["fileA"])
         _check(p.glob("fileB"), [])
         _check(p.glob("dir*/file*"), ["dirB/fileB", "dirC/fileC"])
-        if not os_helper.can_symlink():
+        if not self.can_symlink:
             _check(p.glob("*A"), ['dirA', 'fileA'])
         else:
             _check(p.glob("*A"), ['dirA', 'fileA', 'linkA'])
-        if not os_helper.can_symlink():
+        if not self.can_symlink:
             _check(p.glob("*B/*"), ['dirB/fileB'])
         else:
             _check(p.glob("*B/*"), ['dirB/fileB', 'dirB/linkD',
                                     'linkB/fileB', 'linkB/linkD'])
-        if not os_helper.can_symlink():
+        if not self.can_symlink:
             _check(p.glob("*/fileB"), ['dirB/fileB'])
         else:
             _check(p.glob("*/fileB"), ['dirB/fileB', 'linkB/fileB'])
-        if os_helper.can_symlink():
+        if self.can_symlink:
             _check(p.glob("brokenLink"), ['brokenLink'])
 
-        if not os_helper.can_symlink():
-            _check(p.glob("*/"), ["dirA", "dirB", "dirC", "dirE"])
+        if not self.can_symlink:
+            _check(p.glob("*/"), ["dirA/", "dirB/", "dirC/", "dirE/"])
         else:
-            _check(p.glob("*/"), ["dirA", "dirB", "dirC", "dirE", "linkB"])
+            _check(p.glob("*/"), ["dirA/", "dirB/", "dirC/", "dirE/", "linkB/"])
+
+    def test_glob_empty_pattern(self):
+        p = self.cls()
+        with self.assertRaisesRegex(ValueError, 'Unacceptable pattern'):
+            list(p.glob(''))
 
     def test_glob_case_sensitive(self):
         P = self.cls
@@ -1851,9 +2011,58 @@ def _check(path, pattern, case_sensitive, expected):
         _check(path, "dirb/file*", True, [])
         _check(path, "dirb/file*", False, ["dirB/fileB"])
 
+    def test_glob_follow_symlinks_common(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        def _check(path, glob, expected):
+            actual = {path for path in path.glob(glob, follow_symlinks=True)
+                      if "linkD" not in path.parent.parts}  # exclude symlink loop.
+            self.assertEqual(actual, { P(BASE, q) for q in expected })
+        P = self.cls
+        p = P(BASE)
+        _check(p, "fileB", [])
+        _check(p, "dir*/file*", ["dirB/fileB", "dirC/fileC"])
+        _check(p, "*A", ["dirA", "fileA", "linkA"])
+        _check(p, "*B/*", ["dirB/fileB", "dirB/linkD", "linkB/fileB", "linkB/linkD"])
+        _check(p, "*/fileB", ["dirB/fileB", "linkB/fileB"])
+        _check(p, "*/", ["dirA/", "dirB/", "dirC/", "dirE/", "linkB/"])
+        _check(p, "dir*/*/..", ["dirC/dirD/..", "dirA/linkC/.."])
+        _check(p, "dir*/**/", ["dirA/", "dirA/linkC/", "dirA/linkC/linkD/", "dirB/", "dirB/linkD/",
+                               "dirC/", "dirC/dirD/", "dirE/"])
+        _check(p, "dir*/**/..", ["dirA/..", "dirA/linkC/..", "dirB/..",
+                                 "dirC/..", "dirC/dirD/..", "dirE/.."])
+        _check(p, "dir*/*/**/", ["dirA/linkC/", "dirA/linkC/linkD/", "dirB/linkD/", "dirC/dirD/"])
+        _check(p, "dir*/*/**/..", ["dirA/linkC/..", "dirC/dirD/.."])
+        _check(p, "dir*/**/fileC", ["dirC/fileC"])
+        _check(p, "dir*/*/../dirD/**/", ["dirC/dirD/../dirD/"])
+        _check(p, "*/dirD/**/", ["dirC/dirD/"])
+
+    def test_glob_no_follow_symlinks_common(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        def _check(path, glob, expected):
+            actual = {path for path in path.glob(glob, follow_symlinks=False)}
+            self.assertEqual(actual, { P(BASE, q) for q in expected })
+        P = self.cls
+        p = P(BASE)
+        _check(p, "fileB", [])
+        _check(p, "dir*/file*", ["dirB/fileB", "dirC/fileC"])
+        _check(p, "*A", ["dirA", "fileA", "linkA"])
+        _check(p, "*B/*", ["dirB/fileB", "dirB/linkD"])
+        _check(p, "*/fileB", ["dirB/fileB"])
+        _check(p, "*/", ["dirA/", "dirB/", "dirC/", "dirE/"])
+        _check(p, "dir*/*/..", ["dirC/dirD/.."])
+        _check(p, "dir*/**/", ["dirA/", "dirB/", "dirC/", "dirC/dirD/", "dirE/"])
+        _check(p, "dir*/**/..", ["dirA/..", "dirB/..", "dirC/..", "dirC/dirD/..", "dirE/.."])
+        _check(p, "dir*/*/**/", ["dirC/dirD/"])
+        _check(p, "dir*/*/**/..", ["dirC/dirD/.."])
+        _check(p, "dir*/**/fileC", ["dirC/fileC"])
+        _check(p, "dir*/*/../dirD/**/", ["dirC/dirD/../dirD/"])
+        _check(p, "*/dirD/**/", ["dirC/dirD/"])
+
     def test_rglob_common(self):
         def _check(glob, expected):
-            self.assertEqual(sorted(glob), sorted(P(BASE, q) for q in expected))
+            self.assertEqual(set(glob), {P(BASE, q) for q in expected})
         P = self.cls
         p = P(BASE)
         it = p.rglob("fileA")
@@ -1862,41 +2071,98 @@ def _check(glob, expected):
         _check(p.rglob("fileB"), ["dirB/fileB"])
         _check(p.rglob("**/fileB"), ["dirB/fileB"])
         _check(p.rglob("*/fileA"), [])
-        if not os_helper.can_symlink():
+        if not self.can_symlink:
             _check(p.rglob("*/fileB"), ["dirB/fileB"])
         else:
             _check(p.rglob("*/fileB"), ["dirB/fileB", "dirB/linkD/fileB",
                                         "linkB/fileB", "dirA/linkC/fileB"])
         _check(p.rglob("file*"), ["fileA", "dirB/fileB",
                                   "dirC/fileC", "dirC/dirD/fileD"])
-        if not os_helper.can_symlink():
+        if not self.can_symlink:
             _check(p.rglob("*/"), [
-                "dirA", "dirB", "dirC", "dirC/dirD", "dirE",
+                "dirA/", "dirB/", "dirC/", "dirC/dirD/", "dirE/",
             ])
         else:
             _check(p.rglob("*/"), [
-                "dirA", "dirA/linkC", "dirB", "dirB/linkD", "dirC",
-                "dirC/dirD", "dirE", "linkB",
+                "dirA/", "dirA/linkC/", "dirB/", "dirB/linkD/", "dirC/",
+                "dirC/dirD/", "dirE/", "linkB/",
             ])
-        _check(p.rglob(""), ["", "dirA", "dirB", "dirC", "dirE", "dirC/dirD"])
+        _check(p.rglob(""), ["./", "dirA/", "dirB/", "dirC/", "dirE/", "dirC/dirD/"])
 
         p = P(BASE, "dirC")
         _check(p.rglob("*"), ["dirC/fileC", "dirC/novel.txt",
                               "dirC/dirD", "dirC/dirD/fileD"])
         _check(p.rglob("file*"), ["dirC/fileC", "dirC/dirD/fileD"])
         _check(p.rglob("**/file*"), ["dirC/fileC", "dirC/dirD/fileD"])
-        _check(p.rglob("dir*/**"), ["dirC/dirD"])
+        _check(p.rglob("dir*/**/"), ["dirC/dirD/"])
         _check(p.rglob("*/*"), ["dirC/dirD/fileD"])
-        _check(p.rglob("*/"), ["dirC/dirD"])
-        _check(p.rglob(""), ["dirC", "dirC/dirD"])
-        _check(p.rglob("**"), ["dirC", "dirC/dirD"])
+        _check(p.rglob("*/"), ["dirC/dirD/"])
+        _check(p.rglob(""), ["dirC/", "dirC/dirD/"])
+        _check(p.rglob("**/"), ["dirC/", "dirC/dirD/"])
         # gh-91616, a re module regression
         _check(p.rglob("*.txt"), ["dirC/novel.txt"])
         _check(p.rglob("*.*"), ["dirC/novel.txt"])
 
-    @os_helper.skip_unless_symlink
+    def test_rglob_follow_symlinks_common(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        def _check(path, glob, expected):
+            actual = {path for path in path.rglob(glob, follow_symlinks=True)
+                      if 'linkD' not in path.parent.parts}  # exclude symlink loop.
+            self.assertEqual(actual, { P(BASE, q) for q in expected })
+        P = self.cls
+        p = P(BASE)
+        _check(p, "fileB", ["dirB/fileB", "dirA/linkC/fileB", "linkB/fileB"])
+        _check(p, "*/fileA", [])
+        _check(p, "*/fileB", ["dirB/fileB", "dirA/linkC/fileB", "linkB/fileB"])
+        _check(p, "file*", ["fileA", "dirA/linkC/fileB", "dirB/fileB",
+                            "dirC/fileC", "dirC/dirD/fileD", "linkB/fileB"])
+        _check(p, "*/", ["dirA/", "dirA/linkC/", "dirA/linkC/linkD/", "dirB/", "dirB/linkD/",
+                         "dirC/", "dirC/dirD/", "dirE/", "linkB/", "linkB/linkD/"])
+        _check(p, "", ["./", "dirA/", "dirA/linkC/", "dirA/linkC/linkD/", "dirB/", "dirB/linkD/",
+                       "dirC/", "dirE/", "dirC/dirD/", "linkB/", "linkB/linkD/"])
+
+        p = P(BASE, "dirC")
+        _check(p, "*", ["dirC/fileC", "dirC/novel.txt",
+                        "dirC/dirD", "dirC/dirD/fileD"])
+        _check(p, "file*", ["dirC/fileC", "dirC/dirD/fileD"])
+        _check(p, "*/*", ["dirC/dirD/fileD"])
+        _check(p, "*/", ["dirC/dirD/"])
+        _check(p, "", ["dirC/", "dirC/dirD/"])
+        # gh-91616, a re module regression
+        _check(p, "*.txt", ["dirC/novel.txt"])
+        _check(p, "*.*", ["dirC/novel.txt"])
+
+    def test_rglob_no_follow_symlinks_common(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        def _check(path, glob, expected):
+            actual = {path for path in path.rglob(glob, follow_symlinks=False)}
+            self.assertEqual(actual, { P(BASE, q) for q in expected })
+        P = self.cls
+        p = P(BASE)
+        _check(p, "fileB", ["dirB/fileB"])
+        _check(p, "*/fileA", [])
+        _check(p, "*/fileB", ["dirB/fileB"])
+        _check(p, "file*", ["fileA", "dirB/fileB", "dirC/fileC", "dirC/dirD/fileD", ])
+        _check(p, "*/", ["dirA/", "dirB/", "dirC/", "dirC/dirD/", "dirE/"])
+        _check(p, "", ["./", "dirA/", "dirB/", "dirC/", "dirE/", "dirC/dirD/"])
+
+        p = P(BASE, "dirC")
+        _check(p, "*", ["dirC/fileC", "dirC/novel.txt",
+                        "dirC/dirD", "dirC/dirD/fileD"])
+        _check(p, "file*", ["dirC/fileC", "dirC/dirD/fileD"])
+        _check(p, "*/*", ["dirC/dirD/fileD"])
+        _check(p, "*/", ["dirC/dirD/"])
+        _check(p, "", ["dirC/", "dirC/dirD/"])
+        # gh-91616, a re module regression
+        _check(p, "*.txt", ["dirC/novel.txt"])
+        _check(p, "*.*", ["dirC/novel.txt"])
+
     def test_rglob_symlink_loop(self):
         # Don't get fooled by symlink loops (Issue #26012).
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         P = self.cls
         p = P(BASE)
         given = set(p.rglob('*'))
@@ -1916,9 +2182,11 @@ def test_rglob_symlink_loop(self):
     def test_glob_many_open_files(self):
         depth = 30
         P = self.cls
-        base = P(BASE) / 'deep'
-        p = P(base, *(['d']*depth))
-        p.mkdir(parents=True)
+        p = base = P(BASE) / 'deep'
+        p.mkdir()
+        for _ in range(depth):
+            p /= 'd'
+            p.mkdir()
         pattern = '/'.join(['*'] * depth)
         iters = [base.glob(pattern) for j in range(100)]
         for it in iters:
@@ -1943,13 +2211,13 @@ def test_glob_dotdot(self):
         self.assertEqual(set(p.glob("xyzzy/..")), set())
         self.assertEqual(set(p.glob("/".join([".."] * 50))), { P(BASE, *[".."] * 50)})
 
-    @os_helper.skip_unless_symlink
     def test_glob_permissions(self):
         # See bpo-38894
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         P = self.cls
         base = P(BASE) / 'permissions'
         base.mkdir()
-        self.addCleanup(os_helper.rmtree, base)
 
         for i in range(100):
             link = base / f"link{i}"
@@ -1963,15 +2231,59 @@ def test_glob_permissions(self):
         self.assertEqual(len(set(base.glob("*/fileC"))), 50)
         self.assertEqual(len(set(base.glob("*/file*"))), 50)
 
-    @os_helper.skip_unless_symlink
     def test_glob_long_symlink(self):
         # See gh-87695
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         base = self.cls(BASE) / 'long_symlink'
         base.mkdir()
         bad_link = base / 'bad_link'
         bad_link.symlink_to("bad" * 200)
         self.assertEqual(sorted(base.glob('**/*')), [bad_link])
 
+    def test_glob_above_recursion_limit(self):
+        recursion_limit = 50
+        # directory_depth > recursion_limit
+        directory_depth = recursion_limit + 10
+        base = self.cls(BASE, 'deep')
+        path = base.joinpath(*(['d'] * directory_depth))
+        path.mkdir(parents=True)
+
+        with set_recursion_limit(recursion_limit):
+            list(base.glob('**/'))
+
+    def test_glob_recursive_no_trailing_slash(self):
+        P = self.cls
+        p = P(BASE)
+        with self.assertWarns(FutureWarning):
+            p.glob('**')
+        with self.assertWarns(FutureWarning):
+            p.glob('*/**')
+        with self.assertWarns(FutureWarning):
+            p.rglob('**')
+        with self.assertWarns(FutureWarning):
+            p.rglob('*/**')
+
+
+    def test_readlink(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        P = self.cls(BASE)
+        self.assertEqual((P / 'linkA').readlink(), self.cls('fileA'))
+        self.assertEqual((P / 'brokenLink').readlink(),
+                         self.cls('non-existing'))
+        self.assertEqual((P / 'linkB').readlink(), self.cls('dirB'))
+        self.assertEqual((P / 'linkB' / 'linkD').readlink(), self.cls('../dirB'))
+        with self.assertRaises(OSError):
+            (P / 'fileA').readlink()
+
+    @unittest.skipIf(hasattr(os, "readlink"), "os.readlink() is present")
+    def test_readlink_unsupported(self):
+        P = self.cls(BASE)
+        p = P / 'fileA'
+        with self.assertRaises(pathlib.UnsupportedOperation):
+            q.readlink(p)
+
     def _check_resolve(self, p, expected, strict=True):
         q = p.resolve(strict)
         self.assertEqual(q, expected)
@@ -1979,8 +2291,9 @@ def _check_resolve(self, p, expected, strict=True):
     # This can be used to check both relative and absolute resolutions.
     _check_resolve_relative = _check_resolve_absolute = _check_resolve
 
-    @os_helper.skip_unless_symlink
     def test_resolve_common(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         P = self.cls
         p = P(BASE, 'foo')
         with self.assertRaises(OSError) as cm:
@@ -2009,7 +2322,7 @@ def test_resolve_common(self):
         self._check_resolve_relative(p, P(BASE, 'dirB', 'fileB', 'foo', 'in',
                                           'spam'), False)
         p = P(BASE, 'dirA', 'linkC', '..', 'foo', 'in', 'spam')
-        if os.name == 'nt':
+        if os.name == 'nt' and isinstance(p, pathlib.Path):
             # In Windows, if linkY points to dirB, 'dirA\linkY\..'
             # resolves to 'dirA' without resolving linkY first.
             self._check_resolve_relative(p, P(BASE, 'dirA', 'foo', 'in',
@@ -2019,11 +2332,9 @@ def test_resolve_common(self):
             # resolves to 'dirB/..' first before resolving to parent of dirB.
             self._check_resolve_relative(p, P(BASE, 'foo', 'in', 'spam'), False)
         # Now create absolute symlinks.
-        d = os_helper._longpath(tempfile.mkdtemp(suffix='-dirD',
-                                                 dir=os.getcwd()))
-        self.addCleanup(os_helper.rmtree, d)
-        os.symlink(os.path.join(d), join('dirA', 'linkX'))
-        os.symlink(join('dirB'), os.path.join(d, 'linkY'))
+        d = self.tempdir()
+        P(BASE, 'dirA', 'linkX').symlink_to(d)
+        P(BASE, str(d), 'linkY').symlink_to(join('dirB'))
         p = P(BASE, 'dirA', 'linkX', 'linkY', 'fileB')
         self._check_resolve_absolute(p, P(BASE, 'dirB', 'fileB'))
         # Non-strict
@@ -2031,7 +2342,7 @@ def test_resolve_common(self):
         self._check_resolve_relative(p, P(BASE, 'dirB', 'foo', 'in', 'spam'),
                                      False)
         p = P(BASE, 'dirA', 'linkX', 'linkY', '..', 'foo', 'in', 'spam')
-        if os.name == 'nt':
+        if os.name == 'nt' and isinstance(p, pathlib.Path):
             # In Windows, if linkY points to dirB, 'dirA\linkY\..'
             # resolves to 'dirA' without resolving linkY first.
             self._check_resolve_relative(p, P(d, 'foo', 'in', 'spam'), False)
@@ -2040,13 +2351,14 @@ def test_resolve_common(self):
             # resolves to 'dirB/..' first before resolving to parent of dirB.
             self._check_resolve_relative(p, P(BASE, 'foo', 'in', 'spam'), False)
 
-    @os_helper.skip_unless_symlink
     def test_resolve_dot(self):
         # See http://web.archive.org/web/20200623062557/https://bitbucket.org/pitrou/pathlib/issues/9/
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         p = self.cls(BASE)
-        self.dirlink('.', join('0'))
-        self.dirlink(os.path.join('0', '0'), join('1'))
-        self.dirlink(os.path.join('1', '1'), join('2'))
+        p.joinpath('0').symlink_to('.', target_is_directory=True)
+        p.joinpath('1').symlink_to(os.path.join('0', '0'), target_is_directory=True)
+        p.joinpath('2').symlink_to(os.path.join('1', '1'), target_is_directory=True)
         q = p / '2'
         self.assertEqual(q.resolve(strict=True), p)
         r = q / '3' / '4'
@@ -2054,79 +2366,61 @@ def test_resolve_dot(self):
         # Non-strict
         self.assertEqual(r.resolve(strict=False), p / '3' / '4')
 
-    def test_resolve_nonexist_relative_issue38671(self):
-        p = self.cls('non', 'exist')
-
-        old_cwd = os.getcwd()
-        os.chdir(BASE)
-        try:
-            self.assertEqual(p.resolve(), self.cls(BASE, p))
-        finally:
-            os.chdir(old_cwd)
-
-    def test_with(self):
-        p = self.cls(BASE)
-        it = p.iterdir()
-        it2 = p.iterdir()
-        next(it2)
-        # bpo-46556: path context managers are deprecated in Python 3.11.
-        with self.assertWarns(DeprecationWarning):
-            with p:
-                pass
-        # Using a path as a context manager is a no-op, thus the following
-        # operations should still succeed after the context manage exits.
-        next(it)
-        next(it2)
-        p.exists()
-        p.resolve()
-        p.absolute()
-        with self.assertWarns(DeprecationWarning):
-            with p:
-                pass
-
-    @os_helper.skip_unless_working_chmod
-    def test_chmod(self):
-        p = self.cls(BASE) / 'fileA'
-        mode = p.stat().st_mode
-        # Clear writable bit.
-        new_mode = mode & ~0o222
-        p.chmod(new_mode)
-        self.assertEqual(p.stat().st_mode, new_mode)
-        # Set writable bit.
-        new_mode = mode | 0o222
-        p.chmod(new_mode)
-        self.assertEqual(p.stat().st_mode, new_mode)
-
-    # On Windows, os.chmod does not follow symlinks (issue #15411)
-    @only_posix
-    @os_helper.skip_unless_working_chmod
-    def test_chmod_follow_symlinks_true(self):
-        p = self.cls(BASE) / 'linkA'
-        q = p.resolve()
-        mode = q.stat().st_mode
-        # Clear writable bit.
-        new_mode = mode & ~0o222
-        p.chmod(new_mode, follow_symlinks=True)
-        self.assertEqual(q.stat().st_mode, new_mode)
-        # Set writable bit
-        new_mode = mode | 0o222
-        p.chmod(new_mode, follow_symlinks=True)
-        self.assertEqual(q.stat().st_mode, new_mode)
+    def _check_symlink_loop(self, *args):
+        path = self.cls(*args)
+        with self.assertRaises(OSError) as cm:
+            path.resolve(strict=True)
+        self.assertEqual(cm.exception.errno, errno.ELOOP)
 
-    # XXX also need a test for lchmod.
+    def test_resolve_loop(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        if os.name == 'nt' and issubclass(self.cls, pathlib.Path):
+            self.skipTest("symlink loops work differently with concrete Windows paths")
+        # Loops with relative symlinks.
+        self.cls(BASE, 'linkX').symlink_to('linkX/inside')
+        self._check_symlink_loop(BASE, 'linkX')
+        self.cls(BASE, 'linkY').symlink_to('linkY')
+        self._check_symlink_loop(BASE, 'linkY')
+        self.cls(BASE, 'linkZ').symlink_to('linkZ/../linkZ')
+        self._check_symlink_loop(BASE, 'linkZ')
+        # Non-strict
+        p = self.cls(BASE, 'linkZ', 'foo')
+        self.assertEqual(p.resolve(strict=False), p)
+        # Loops with absolute symlinks.
+        self.cls(BASE, 'linkU').symlink_to(join('linkU/inside'))
+        self._check_symlink_loop(BASE, 'linkU')
+        self.cls(BASE, 'linkV').symlink_to(join('linkV'))
+        self._check_symlink_loop(BASE, 'linkV')
+        self.cls(BASE, 'linkW').symlink_to(join('linkW/../linkW'))
+        self._check_symlink_loop(BASE, 'linkW')
+        # Non-strict
+        q = self.cls(BASE, 'linkW', 'foo')
+        self.assertEqual(q.resolve(strict=False), q)
 
-    @os_helper.skip_unless_working_chmod
     def test_stat(self):
-        p = self.cls(BASE) / 'fileA'
-        st = p.stat()
-        self.assertEqual(p.stat(), st)
-        # Change file mode by flipping write bit.
-        p.chmod(st.st_mode ^ 0o222)
-        self.addCleanup(p.chmod, st.st_mode)
-        self.assertNotEqual(p.stat(), st)
+        statA = self.cls(BASE).joinpath('fileA').stat()
+        statB = self.cls(BASE).joinpath('dirB', 'fileB').stat()
+        statC = self.cls(BASE).joinpath('dirC').stat()
+        # st_mode: files are the same, directory differs.
+        self.assertIsInstance(statA.st_mode, int)
+        self.assertEqual(statA.st_mode, statB.st_mode)
+        self.assertNotEqual(statA.st_mode, statC.st_mode)
+        self.assertNotEqual(statB.st_mode, statC.st_mode)
+        # st_ino: all different,
+        self.assertIsInstance(statA.st_ino, int)
+        self.assertNotEqual(statA.st_ino, statB.st_ino)
+        self.assertNotEqual(statA.st_ino, statC.st_ino)
+        self.assertNotEqual(statB.st_ino, statC.st_ino)
+        # st_dev: all the same.
+        self.assertIsInstance(statA.st_dev, int)
+        self.assertEqual(statA.st_dev, statB.st_dev)
+        self.assertEqual(statA.st_dev, statC.st_dev)
+        # other attributes not used by pathlib.
 
-    @os_helper.skip_unless_symlink
     def test_stat_no_follow_symlinks(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         p = self.cls(BASE) / 'linkA'
         st = p.stat()
         self.assertNotEqual(st, p.stat(follow_symlinks=False))
@@ -2136,8 +2430,9 @@ def test_stat_no_follow_symlinks_nosymlink(self):
         st = p.stat()
         self.assertEqual(st, p.stat(follow_symlinks=False))
 
-    @os_helper.skip_unless_symlink
     def test_lstat(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         p = self.cls(BASE)/ 'linkA'
         st = p.stat()
         self.assertNotEqual(st, p.lstat())
@@ -2147,27 +2442,630 @@ def test_lstat_nosymlink(self):
         st = p.stat()
         self.assertEqual(st, p.lstat())
 
-    @unittest.skipUnless(pwd, "the pwd module is needed for this test")
-    def test_owner(self):
-        p = self.cls(BASE) / 'fileA'
-        uid = p.stat().st_uid
-        try:
-            name = pwd.getpwuid(uid).pw_name
+    def test_is_dir(self):
+        P = self.cls(BASE)
+        self.assertTrue((P / 'dirA').is_dir())
+        self.assertFalse((P / 'fileA').is_dir())
+        self.assertFalse((P / 'non-existing').is_dir())
+        self.assertFalse((P / 'fileA' / 'bah').is_dir())
+        if self.can_symlink:
+            self.assertFalse((P / 'linkA').is_dir())
+            self.assertTrue((P / 'linkB').is_dir())
+            self.assertFalse((P/ 'brokenLink').is_dir())
+        self.assertFalse((P / 'dirA\udfff').is_dir())
+        self.assertFalse((P / 'dirA\x00').is_dir())
+
+    def test_is_dir_no_follow_symlinks(self):
+        P = self.cls(BASE)
+        self.assertTrue((P / 'dirA').is_dir(follow_symlinks=False))
+        self.assertFalse((P / 'fileA').is_dir(follow_symlinks=False))
+        self.assertFalse((P / 'non-existing').is_dir(follow_symlinks=False))
+        self.assertFalse((P / 'fileA' / 'bah').is_dir(follow_symlinks=False))
+        if self.can_symlink:
+            self.assertFalse((P / 'linkA').is_dir(follow_symlinks=False))
+            self.assertFalse((P / 'linkB').is_dir(follow_symlinks=False))
+            self.assertFalse((P/ 'brokenLink').is_dir(follow_symlinks=False))
+        self.assertFalse((P / 'dirA\udfff').is_dir(follow_symlinks=False))
+        self.assertFalse((P / 'dirA\x00').is_dir(follow_symlinks=False))
+
+    def test_is_file(self):
+        P = self.cls(BASE)
+        self.assertTrue((P / 'fileA').is_file())
+        self.assertFalse((P / 'dirA').is_file())
+        self.assertFalse((P / 'non-existing').is_file())
+        self.assertFalse((P / 'fileA' / 'bah').is_file())
+        if self.can_symlink:
+            self.assertTrue((P / 'linkA').is_file())
+            self.assertFalse((P / 'linkB').is_file())
+            self.assertFalse((P/ 'brokenLink').is_file())
+        self.assertFalse((P / 'fileA\udfff').is_file())
+        self.assertFalse((P / 'fileA\x00').is_file())
+
+    def test_is_file_no_follow_symlinks(self):
+        P = self.cls(BASE)
+        self.assertTrue((P / 'fileA').is_file(follow_symlinks=False))
+        self.assertFalse((P / 'dirA').is_file(follow_symlinks=False))
+        self.assertFalse((P / 'non-existing').is_file(follow_symlinks=False))
+        self.assertFalse((P / 'fileA' / 'bah').is_file(follow_symlinks=False))
+        if self.can_symlink:
+            self.assertFalse((P / 'linkA').is_file(follow_symlinks=False))
+            self.assertFalse((P / 'linkB').is_file(follow_symlinks=False))
+            self.assertFalse((P/ 'brokenLink').is_file(follow_symlinks=False))
+        self.assertFalse((P / 'fileA\udfff').is_file(follow_symlinks=False))
+        self.assertFalse((P / 'fileA\x00').is_file(follow_symlinks=False))
+
+    def test_is_mount(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_mount())
+        self.assertFalse((P / 'dirA').is_mount())
+        self.assertFalse((P / 'non-existing').is_mount())
+        self.assertFalse((P / 'fileA' / 'bah').is_mount())
+        if self.can_symlink:
+            self.assertFalse((P / 'linkA').is_mount())
+
+    def test_is_symlink(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_symlink())
+        self.assertFalse((P / 'dirA').is_symlink())
+        self.assertFalse((P / 'non-existing').is_symlink())
+        self.assertFalse((P / 'fileA' / 'bah').is_symlink())
+        if self.can_symlink:
+            self.assertTrue((P / 'linkA').is_symlink())
+            self.assertTrue((P / 'linkB').is_symlink())
+            self.assertTrue((P/ 'brokenLink').is_symlink())
+        self.assertIs((P / 'fileA\udfff').is_file(), False)
+        self.assertIs((P / 'fileA\x00').is_file(), False)
+        if self.can_symlink:
+            self.assertIs((P / 'linkA\udfff').is_file(), False)
+            self.assertIs((P / 'linkA\x00').is_file(), False)
+
+    def test_is_junction_false(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_junction())
+        self.assertFalse((P / 'dirA').is_junction())
+        self.assertFalse((P / 'non-existing').is_junction())
+        self.assertFalse((P / 'fileA' / 'bah').is_junction())
+        self.assertFalse((P / 'fileA\udfff').is_junction())
+        self.assertFalse((P / 'fileA\x00').is_junction())
+
+    def test_is_fifo_false(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_fifo())
+        self.assertFalse((P / 'dirA').is_fifo())
+        self.assertFalse((P / 'non-existing').is_fifo())
+        self.assertFalse((P / 'fileA' / 'bah').is_fifo())
+        self.assertIs((P / 'fileA\udfff').is_fifo(), False)
+        self.assertIs((P / 'fileA\x00').is_fifo(), False)
+
+    def test_is_socket_false(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_socket())
+        self.assertFalse((P / 'dirA').is_socket())
+        self.assertFalse((P / 'non-existing').is_socket())
+        self.assertFalse((P / 'fileA' / 'bah').is_socket())
+        self.assertIs((P / 'fileA\udfff').is_socket(), False)
+        self.assertIs((P / 'fileA\x00').is_socket(), False)
+
+    def test_is_block_device_false(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_block_device())
+        self.assertFalse((P / 'dirA').is_block_device())
+        self.assertFalse((P / 'non-existing').is_block_device())
+        self.assertFalse((P / 'fileA' / 'bah').is_block_device())
+        self.assertIs((P / 'fileA\udfff').is_block_device(), False)
+        self.assertIs((P / 'fileA\x00').is_block_device(), False)
+
+    def test_is_char_device_false(self):
+        P = self.cls(BASE)
+        self.assertFalse((P / 'fileA').is_char_device())
+        self.assertFalse((P / 'dirA').is_char_device())
+        self.assertFalse((P / 'non-existing').is_char_device())
+        self.assertFalse((P / 'fileA' / 'bah').is_char_device())
+        self.assertIs((P / 'fileA\udfff').is_char_device(), False)
+        self.assertIs((P / 'fileA\x00').is_char_device(), False)
+
+    def test_pickling_common(self):
+        p = self.cls(BASE, 'fileA')
+        for proto in range(0, pickle.HIGHEST_PROTOCOL + 1):
+            dumped = pickle.dumps(p, proto)
+            pp = pickle.loads(dumped)
+            self.assertEqual(pp.stat(), p.stat())
+
+    def test_parts_interning(self):
+        P = self.cls
+        p = P('/usr/bin/foo')
+        q = P('/usr/local/bin')
+        # 'usr'
+        self.assertIs(p.parts[1], q.parts[1])
+        # 'bin'
+        self.assertIs(p.parts[2], q.parts[3])
+
+    def _check_complex_symlinks(self, link0_target):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+
+        # Test solving a non-looping chain of symlinks (issue #19887).
+        P = self.cls(BASE)
+        P.joinpath('link1').symlink_to(os.path.join('link0', 'link0'), target_is_directory=True)
+        P.joinpath('link2').symlink_to(os.path.join('link1', 'link1'), target_is_directory=True)
+        P.joinpath('link3').symlink_to(os.path.join('link2', 'link2'), target_is_directory=True)
+        P.joinpath('link0').symlink_to(link0_target, target_is_directory=True)
+
+        # Resolve absolute paths.
+        p = (P / 'link0').resolve()
+        self.assertEqual(p, P)
+        self.assertEqualNormCase(str(p), BASE)
+        p = (P / 'link1').resolve()
+        self.assertEqual(p, P)
+        self.assertEqualNormCase(str(p), BASE)
+        p = (P / 'link2').resolve()
+        self.assertEqual(p, P)
+        self.assertEqualNormCase(str(p), BASE)
+        p = (P / 'link3').resolve()
+        self.assertEqual(p, P)
+        self.assertEqualNormCase(str(p), BASE)
+
+        # Resolve relative paths.
+        try:
+            self.cls().absolute()
+        except pathlib.UnsupportedOperation:
+            return
+        old_path = os.getcwd()
+        os.chdir(BASE)
+        try:
+            p = self.cls('link0').resolve()
+            self.assertEqual(p, P)
+            self.assertEqualNormCase(str(p), BASE)
+            p = self.cls('link1').resolve()
+            self.assertEqual(p, P)
+            self.assertEqualNormCase(str(p), BASE)
+            p = self.cls('link2').resolve()
+            self.assertEqual(p, P)
+            self.assertEqualNormCase(str(p), BASE)
+            p = self.cls('link3').resolve()
+            self.assertEqual(p, P)
+            self.assertEqualNormCase(str(p), BASE)
+        finally:
+            os.chdir(old_path)
+
+    def test_complex_symlinks_absolute(self):
+        self._check_complex_symlinks(BASE)
+
+    def test_complex_symlinks_relative(self):
+        self._check_complex_symlinks('.')
+
+    def test_complex_symlinks_relative_dot_dot(self):
+        self._check_complex_symlinks(os.path.join('dirA', '..'))
+
+    def setUpWalk(self):
+        # Build:
+        #     TESTFN/
+        #       TEST1/              a file kid and two directory kids
+        #         tmp1
+        #         SUB1/             a file kid and a directory kid
+        #           tmp2
+        #           SUB11/          no kids
+        #         SUB2/             a file kid and a dirsymlink kid
+        #           tmp3
+        #           link/           a symlink to TEST2
+        #           broken_link
+        #           broken_link2
+        #       TEST2/
+        #         tmp4              a lone file
+        self.walk_path = self.cls(BASE, "TEST1")
+        self.sub1_path = self.walk_path / "SUB1"
+        self.sub11_path = self.sub1_path / "SUB11"
+        self.sub2_path = self.walk_path / "SUB2"
+        tmp1_path = self.walk_path / "tmp1"
+        tmp2_path = self.sub1_path / "tmp2"
+        tmp3_path = self.sub2_path / "tmp3"
+        self.link_path = self.sub2_path / "link"
+        t2_path = self.cls(BASE, "TEST2")
+        tmp4_path = self.cls(BASE, "TEST2", "tmp4")
+        broken_link_path = self.sub2_path / "broken_link"
+        broken_link2_path = self.sub2_path / "broken_link2"
+
+        self.sub11_path.mkdir(parents=True)
+        self.sub2_path.mkdir(parents=True)
+        t2_path.mkdir(parents=True)
+
+        for path in tmp1_path, tmp2_path, tmp3_path, tmp4_path:
+            with path.open("w", encoding='utf-8') as f:
+                f.write(f"I'm {path} and proud of it.  Blame test_pathlib.\n")
+
+        if self.can_symlink:
+            self.link_path.symlink_to(t2_path)
+            broken_link_path.symlink_to('broken')
+            broken_link2_path.symlink_to(self.cls('tmp3', 'broken'))
+            self.sub2_tree = (self.sub2_path, [], ["broken_link", "broken_link2", "link", "tmp3"])
+        else:
+            self.sub2_tree = (self.sub2_path, [], ["tmp3"])
+
+    def test_walk_topdown(self):
+        self.setUpWalk()
+        walker = self.walk_path.walk()
+        entry = next(walker)
+        entry[1].sort()  # Ensure we visit SUB1 before SUB2
+        self.assertEqual(entry, (self.walk_path, ["SUB1", "SUB2"], ["tmp1"]))
+        entry = next(walker)
+        self.assertEqual(entry, (self.sub1_path, ["SUB11"], ["tmp2"]))
+        entry = next(walker)
+        self.assertEqual(entry, (self.sub11_path, [], []))
+        entry = next(walker)
+        entry[1].sort()
+        entry[2].sort()
+        self.assertEqual(entry, self.sub2_tree)
+        with self.assertRaises(StopIteration):
+            next(walker)
+
+    def test_walk_prune(self):
+        self.setUpWalk()
+        # Prune the search.
+        all = []
+        for root, dirs, files in self.walk_path.walk():
+            all.append((root, dirs, files))
+            if 'SUB1' in dirs:
+                # Note that this also mutates the dirs we appended to all!
+                dirs.remove('SUB1')
+
+        self.assertEqual(len(all), 2)
+        self.assertEqual(all[0], (self.walk_path, ["SUB2"], ["tmp1"]))
+
+        all[1][-1].sort()
+        all[1][1].sort()
+        self.assertEqual(all[1], self.sub2_tree)
+
+    def test_walk_bottom_up(self):
+        self.setUpWalk()
+        seen_testfn = seen_sub1 = seen_sub11 = seen_sub2 = False
+        for path, dirnames, filenames in self.walk_path.walk(top_down=False):
+            if path == self.walk_path:
+                self.assertFalse(seen_testfn)
+                self.assertTrue(seen_sub1)
+                self.assertTrue(seen_sub2)
+                self.assertEqual(sorted(dirnames), ["SUB1", "SUB2"])
+                self.assertEqual(filenames, ["tmp1"])
+                seen_testfn = True
+            elif path == self.sub1_path:
+                self.assertFalse(seen_testfn)
+                self.assertFalse(seen_sub1)
+                self.assertTrue(seen_sub11)
+                self.assertEqual(dirnames, ["SUB11"])
+                self.assertEqual(filenames, ["tmp2"])
+                seen_sub1 = True
+            elif path == self.sub11_path:
+                self.assertFalse(seen_sub1)
+                self.assertFalse(seen_sub11)
+                self.assertEqual(dirnames, [])
+                self.assertEqual(filenames, [])
+                seen_sub11 = True
+            elif path == self.sub2_path:
+                self.assertFalse(seen_testfn)
+                self.assertFalse(seen_sub2)
+                self.assertEqual(sorted(dirnames), sorted(self.sub2_tree[1]))
+                self.assertEqual(sorted(filenames), sorted(self.sub2_tree[2]))
+                seen_sub2 = True
+            else:
+                raise AssertionError(f"Unexpected path: {path}")
+        self.assertTrue(seen_testfn)
+
+    def test_walk_follow_symlinks(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        self.setUpWalk()
+        walk_it = self.walk_path.walk(follow_symlinks=True)
+        for root, dirs, files in walk_it:
+            if root == self.link_path:
+                self.assertEqual(dirs, [])
+                self.assertEqual(files, ["tmp4"])
+                break
+        else:
+            self.fail("Didn't follow symlink with follow_symlinks=True")
+
+    def test_walk_symlink_location(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
+        self.setUpWalk()
+        # Tests whether symlinks end up in filenames or dirnames depending
+        # on the `follow_symlinks` argument.
+        walk_it = self.walk_path.walk(follow_symlinks=False)
+        for root, dirs, files in walk_it:
+            if root == self.sub2_path:
+                self.assertIn("link", files)
+                break
+        else:
+            self.fail("symlink not found")
+
+        walk_it = self.walk_path.walk(follow_symlinks=True)
+        for root, dirs, files in walk_it:
+            if root == self.sub2_path:
+                self.assertIn("link", dirs)
+                break
+        else:
+            self.fail("symlink not found")
+
+    def test_walk_above_recursion_limit(self):
+        recursion_limit = 40
+        # directory_depth > recursion_limit
+        directory_depth = recursion_limit + 10
+        base = self.cls(BASE, 'deep')
+        path = base.joinpath(*(['d'] * directory_depth))
+        path.mkdir(parents=True)
+
+        with set_recursion_limit(recursion_limit):
+            list(base.walk())
+            list(base.walk(top_down=False))
+
+class DummyPathWithSymlinks(DummyPath):
+    def readlink(self):
+        path = str(self.parent.resolve() / self.name)
+        if path in self._symlinks:
+            return self.with_segments(self._symlinks[path])
+        elif path in self._files or path in self._directories:
+            raise OSError(errno.EINVAL, "Not a symlink", path)
+        else:
+            raise FileNotFoundError(errno.ENOENT, "File not found", path)
+
+    def symlink_to(self, target, target_is_directory=False):
+        self._directories[str(self.parent)].add(self.name)
+        self._symlinks[str(self)] = str(target)
+
+
+class DummyPathWithSymlinksTest(DummyPathTest):
+    cls = DummyPathWithSymlinks
+    can_symlink = True
+
+
+#
+# Tests for the concrete classes.
+#
+
+class PathTest(DummyPathTest, PurePathTest):
+    """Tests for the FS-accessing functionalities of the Path classes."""
+    cls = pathlib.Path
+    can_symlink = os_helper.can_symlink()
+
+    def setUp(self):
+        super().setUp()
+        os.chmod(join('dirE'), 0)
+
+    def tearDown(self):
+        os.chmod(join('dirE'), 0o777)
+        os_helper.rmtree(BASE)
+
+    def tempdir(self):
+        d = os_helper._longpath(tempfile.mkdtemp(suffix='-dirD',
+                                                 dir=os.getcwd()))
+        self.addCleanup(os_helper.rmtree, d)
+        return d
+
+    def test_concrete_class(self):
+        if self.cls is pathlib.Path:
+            expected = pathlib.WindowsPath if os.name == 'nt' else pathlib.PosixPath
+        else:
+            expected = self.cls
+        p = self.cls('a')
+        self.assertIs(type(p), expected)
+
+    def test_unsupported_pathmod(self):
+        if self.cls.pathmod is os.path:
+            self.skipTest("path flavour is supported")
+        else:
+            self.assertRaises(pathlib.UnsupportedOperation, self.cls)
+
+    def _test_cwd(self, p):
+        q = self.cls(os.getcwd())
+        self.assertEqual(p, q)
+        self.assertEqualNormCase(str(p), str(q))
+        self.assertIs(type(p), type(q))
+        self.assertTrue(p.is_absolute())
+
+    def test_cwd(self):
+        p = self.cls.cwd()
+        self._test_cwd(p)
+
+    def test_absolute_common(self):
+        P = self.cls
+
+        with mock.patch("os.getcwd") as getcwd:
+            getcwd.return_value = BASE
+
+            # Simple relative paths.
+            self.assertEqual(str(P().absolute()), BASE)
+            self.assertEqual(str(P('.').absolute()), BASE)
+            self.assertEqual(str(P('a').absolute()), os.path.join(BASE, 'a'))
+            self.assertEqual(str(P('a', 'b', 'c').absolute()), os.path.join(BASE, 'a', 'b', 'c'))
+
+            # Symlinks should not be resolved.
+            self.assertEqual(str(P('linkB', 'fileB').absolute()), os.path.join(BASE, 'linkB', 'fileB'))
+            self.assertEqual(str(P('brokenLink').absolute()), os.path.join(BASE, 'brokenLink'))
+            self.assertEqual(str(P('brokenLinkLoop').absolute()), os.path.join(BASE, 'brokenLinkLoop'))
+
+            # '..' entries should be preserved and not normalised.
+            self.assertEqual(str(P('..').absolute()), os.path.join(BASE, '..'))
+            self.assertEqual(str(P('a', '..').absolute()), os.path.join(BASE, 'a', '..'))
+            self.assertEqual(str(P('..', 'b').absolute()), os.path.join(BASE, '..', 'b'))
+
+    def _test_home(self, p):
+        q = self.cls(os.path.expanduser('~'))
+        self.assertEqual(p, q)
+        self.assertEqualNormCase(str(p), str(q))
+        self.assertIs(type(p), type(q))
+        self.assertTrue(p.is_absolute())
+
+    @unittest.skipIf(
+        pwd is None, reason="Test requires pwd module to get homedir."
+    )
+    def test_home(self):
+        with os_helper.EnvironmentVarGuard() as env:
+            self._test_home(self.cls.home())
+
+            env.clear()
+            env['USERPROFILE'] = os.path.join(BASE, 'userprofile')
+            self._test_home(self.cls.home())
+
+            # bpo-38883: ignore `HOME` when set on windows
+            env['HOME'] = os.path.join(BASE, 'home')
+            self._test_home(self.cls.home())
+
+    @unittest.skipIf(is_wasi, "WASI has no user accounts.")
+    def test_expanduser_common(self):
+        P = self.cls
+        p = P('~')
+        self.assertEqual(p.expanduser(), P(os.path.expanduser('~')))
+        p = P('foo')
+        self.assertEqual(p.expanduser(), p)
+        p = P('/~')
+        self.assertEqual(p.expanduser(), p)
+        p = P('../~')
+        self.assertEqual(p.expanduser(), p)
+        p = P(P('').absolute().anchor) / '~'
+        self.assertEqual(p.expanduser(), p)
+        p = P('~/a:b')
+        self.assertEqual(p.expanduser(), P(os.path.expanduser('~'), './a:b'))
+
+    def test_with_segments(self):
+        class P(self.cls):
+            def __init__(self, *pathsegments, session_id):
+                super().__init__(*pathsegments)
+                self.session_id = session_id
+
+            def with_segments(self, *pathsegments):
+                return type(self)(*pathsegments, session_id=self.session_id)
+        p = P(BASE, session_id=42)
+        self.assertEqual(42, p.absolute().session_id)
+        self.assertEqual(42, p.resolve().session_id)
+        if not is_wasi:  # WASI has no user accounts.
+            self.assertEqual(42, p.with_segments('~').expanduser().session_id)
+        self.assertEqual(42, (p / 'fileA').rename(p / 'fileB').session_id)
+        self.assertEqual(42, (p / 'fileB').replace(p / 'fileA').session_id)
+        if self.can_symlink:
+            self.assertEqual(42, (p / 'linkA').readlink().session_id)
+        for path in p.iterdir():
+            self.assertEqual(42, path.session_id)
+        for path in p.glob('*'):
+            self.assertEqual(42, path.session_id)
+        for path in p.rglob('*'):
+            self.assertEqual(42, path.session_id)
+        for dirpath, dirnames, filenames in p.walk():
+            self.assertEqual(42, dirpath.session_id)
+
+    def test_open_unbuffered(self):
+        p = self.cls(BASE)
+        with (p / 'fileA').open('rb', buffering=0) as f:
+            self.assertIsInstance(f, io.RawIOBase)
+            self.assertEqual(f.read().strip(), b"this is file A")
+
+    def test_resolve_nonexist_relative_issue38671(self):
+        p = self.cls('non', 'exist')
+
+        old_cwd = os.getcwd()
+        os.chdir(BASE)
+        try:
+            self.assertEqual(p.resolve(), self.cls(BASE, p))
+        finally:
+            os.chdir(old_cwd)
+
+    @os_helper.skip_unless_working_chmod
+    def test_chmod(self):
+        p = self.cls(BASE) / 'fileA'
+        mode = p.stat().st_mode
+        # Clear writable bit.
+        new_mode = mode & ~0o222
+        p.chmod(new_mode)
+        self.assertEqual(p.stat().st_mode, new_mode)
+        # Set writable bit.
+        new_mode = mode | 0o222
+        p.chmod(new_mode)
+        self.assertEqual(p.stat().st_mode, new_mode)
+
+    # On Windows, os.chmod does not follow symlinks (issue #15411)
+    @only_posix
+    @os_helper.skip_unless_working_chmod
+    def test_chmod_follow_symlinks_true(self):
+        p = self.cls(BASE) / 'linkA'
+        q = p.resolve()
+        mode = q.stat().st_mode
+        # Clear writable bit.
+        new_mode = mode & ~0o222
+        p.chmod(new_mode, follow_symlinks=True)
+        self.assertEqual(q.stat().st_mode, new_mode)
+        # Set writable bit
+        new_mode = mode | 0o222
+        p.chmod(new_mode, follow_symlinks=True)
+        self.assertEqual(q.stat().st_mode, new_mode)
+
+    # XXX also need a test for lchmod.
+
+    def _get_pw_name_or_skip_test(self, uid):
+        try:
+            return pwd.getpwuid(uid).pw_name
         except KeyError:
             self.skipTest(
                 "user %d doesn't have an entry in the system database" % uid)
-        self.assertEqual(name, p.owner())
 
-    @unittest.skipUnless(grp, "the grp module is needed for this test")
-    def test_group(self):
+    @unittest.skipUnless(pwd, "the pwd module is needed for this test")
+    def test_owner(self):
         p = self.cls(BASE) / 'fileA'
-        gid = p.stat().st_gid
+        expected_uid = p.stat().st_uid
+        expected_name = self._get_pw_name_or_skip_test(expected_uid)
+
+        self.assertEqual(expected_name, p.owner())
+
+    @unittest.skipUnless(pwd, "the pwd module is needed for this test")
+    @unittest.skipUnless(root_in_posix, "test needs root privilege")
+    def test_owner_no_follow_symlinks(self):
+        all_users = [u.pw_uid for u in pwd.getpwall()]
+        if len(all_users) < 2:
+            self.skipTest("test needs more than one user")
+
+        target = self.cls(BASE) / 'fileA'
+        link = self.cls(BASE) / 'linkA'
+
+        uid_1, uid_2 = all_users[:2]
+        os.chown(target, uid_1, -1)
+        os.chown(link, uid_2, -1, follow_symlinks=False)
+
+        expected_uid = link.stat(follow_symlinks=False).st_uid
+        expected_name = self._get_pw_name_or_skip_test(expected_uid)
+
+        self.assertEqual(expected_uid, uid_2)
+        self.assertEqual(expected_name, link.owner(follow_symlinks=False))
+
+    def _get_gr_name_or_skip_test(self, gid):
         try:
-            name = grp.getgrgid(gid).gr_name
+            return grp.getgrgid(gid).gr_name
         except KeyError:
             self.skipTest(
                 "group %d doesn't have an entry in the system database" % gid)
-        self.assertEqual(name, p.group())
+
+    @unittest.skipUnless(grp, "the grp module is needed for this test")
+    def test_group(self):
+        p = self.cls(BASE) / 'fileA'
+        expected_gid = p.stat().st_gid
+        expected_name = self._get_gr_name_or_skip_test(expected_gid)
+
+        self.assertEqual(expected_name, p.group())
+
+    @unittest.skipUnless(grp, "the grp module is needed for this test")
+    @unittest.skipUnless(root_in_posix, "test needs root privilege")
+    def test_group_no_follow_symlinks(self):
+        all_groups = [g.gr_gid for g in grp.getgrall()]
+        if len(all_groups) < 2:
+            self.skipTest("test needs more than one group")
+
+        target = self.cls(BASE) / 'fileA'
+        link = self.cls(BASE) / 'linkA'
+
+        gid_1, gid_2 = all_groups[:2]
+        os.chown(target, -1, gid_1)
+        os.chown(link, -1, gid_2, follow_symlinks=False)
+
+        expected_gid = link.stat(follow_symlinks=False).st_gid
+        expected_name = self._get_pw_name_or_skip_test(expected_gid)
+
+        self.assertEqual(expected_gid, gid_2)
+        self.assertEqual(expected_name, link.group(follow_symlinks=False))
 
     def test_unlink(self):
         p = self.cls(BASE) / 'fileA'
@@ -2207,12 +3105,12 @@ def test_hardlink_to(self):
         self.assertTrue(link2.exists())
 
     @unittest.skipIf(hasattr(os, "link"), "os.link() is present")
-    def test_link_to_not_implemented(self):
+    def test_hardlink_to_unsupported(self):
         P = self.cls(BASE)
         p = P / 'fileA'
         # linking to another path.
         q = P / 'dirA' / 'fileAA'
-        with self.assertRaises(NotImplementedError):
+        with self.assertRaises(pathlib.UnsupportedOperation):
             q.hardlink_to(p)
 
     def test_rename(self):
@@ -2249,16 +3147,6 @@ def test_replace(self):
         self.assertEqual(os.stat(r).st_size, size)
         self.assertFileNotFound(q.stat)
 
-    @os_helper.skip_unless_symlink
-    def test_readlink(self):
-        P = self.cls(BASE)
-        self.assertEqual((P / 'linkA').readlink(), self.cls('fileA'))
-        self.assertEqual((P / 'brokenLink').readlink(),
-                         self.cls('non-existing'))
-        self.assertEqual((P / 'linkB').readlink(), self.cls('dirB'))
-        with self.assertRaises(OSError):
-            (P / 'fileA').readlink()
-
     def test_touch_common(self):
         P = self.cls(BASE)
         p = P / 'newfileA'
@@ -2426,8 +3314,9 @@ def my_mkdir(path, mode=0o777):
                 self.assertNotIn(str(p12), concurrently_created)
             self.assertTrue(p.exists())
 
-    @os_helper.skip_unless_symlink
     def test_symlink_to(self):
+        if not self.can_symlink:
+            self.skipTest("symlinks required")
         P = self.cls(BASE)
         target = P / 'fileA'
         # Symlinking a path target.
@@ -2450,78 +3339,21 @@ def test_symlink_to(self):
         self.assertTrue(link.is_dir())
         self.assertTrue(list(link.iterdir()))
 
-    def test_is_dir(self):
-        P = self.cls(BASE)
-        self.assertTrue((P / 'dirA').is_dir())
-        self.assertFalse((P / 'fileA').is_dir())
-        self.assertFalse((P / 'non-existing').is_dir())
-        self.assertFalse((P / 'fileA' / 'bah').is_dir())
-        if os_helper.can_symlink():
-            self.assertFalse((P / 'linkA').is_dir())
-            self.assertTrue((P / 'linkB').is_dir())
-            self.assertFalse((P/ 'brokenLink').is_dir(), False)
-        self.assertIs((P / 'dirA\udfff').is_dir(), False)
-        self.assertIs((P / 'dirA\x00').is_dir(), False)
-
-    def test_is_file(self):
-        P = self.cls(BASE)
-        self.assertTrue((P / 'fileA').is_file())
-        self.assertFalse((P / 'dirA').is_file())
-        self.assertFalse((P / 'non-existing').is_file())
-        self.assertFalse((P / 'fileA' / 'bah').is_file())
-        if os_helper.can_symlink():
-            self.assertTrue((P / 'linkA').is_file())
-            self.assertFalse((P / 'linkB').is_file())
-            self.assertFalse((P/ 'brokenLink').is_file())
-        self.assertIs((P / 'fileA\udfff').is_file(), False)
-        self.assertIs((P / 'fileA\x00').is_file(), False)
-
-    def test_is_mount(self):
-        P = self.cls(BASE)
-        if os.name == 'nt':
-            R = self.cls('c:\\')
-        else:
-            R = self.cls('/')
-        self.assertFalse((P / 'fileA').is_mount())
-        self.assertFalse((P / 'dirA').is_mount())
-        self.assertFalse((P / 'non-existing').is_mount())
-        self.assertFalse((P / 'fileA' / 'bah').is_mount())
-        self.assertTrue(R.is_mount())
-        if os_helper.can_symlink():
-            self.assertFalse((P / 'linkA').is_mount())
-        self.assertIs((R / '\udfff').is_mount(), False)
-
-    def test_is_symlink(self):
+    @unittest.skipIf(hasattr(os, "symlink"), "os.symlink() is present")
+    def test_symlink_to_unsupported(self):
         P = self.cls(BASE)
-        self.assertFalse((P / 'fileA').is_symlink())
-        self.assertFalse((P / 'dirA').is_symlink())
-        self.assertFalse((P / 'non-existing').is_symlink())
-        self.assertFalse((P / 'fileA' / 'bah').is_symlink())
-        if os_helper.can_symlink():
-            self.assertTrue((P / 'linkA').is_symlink())
-            self.assertTrue((P / 'linkB').is_symlink())
-            self.assertTrue((P/ 'brokenLink').is_symlink())
-        self.assertIs((P / 'fileA\udfff').is_file(), False)
-        self.assertIs((P / 'fileA\x00').is_file(), False)
-        if os_helper.can_symlink():
-            self.assertIs((P / 'linkA\udfff').is_file(), False)
-            self.assertIs((P / 'linkA\x00').is_file(), False)
+        p = P / 'fileA'
+        # linking to another path.
+        q = P / 'dirA' / 'fileAA'
+        with self.assertRaises(pathlib.UnsupportedOperation):
+            q.symlink_to(p)
 
     def test_is_junction(self):
         P = self.cls(BASE)
 
-        with mock.patch.object(P._flavour, 'isjunction'):
-            self.assertEqual(P.is_junction(), P._flavour.isjunction.return_value)
-            P._flavour.isjunction.assert_called_once_with(P)
-
-    def test_is_fifo_false(self):
-        P = self.cls(BASE)
-        self.assertFalse((P / 'fileA').is_fifo())
-        self.assertFalse((P / 'dirA').is_fifo())
-        self.assertFalse((P / 'non-existing').is_fifo())
-        self.assertFalse((P / 'fileA' / 'bah').is_fifo())
-        self.assertIs((P / 'fileA\udfff').is_fifo(), False)
-        self.assertIs((P / 'fileA\x00').is_fifo(), False)
+        with mock.patch.object(P.pathmod, 'isjunction'):
+            self.assertEqual(P.is_junction(), P.pathmod.isjunction.return_value)
+            P.pathmod.isjunction.assert_called_once_with(P)
 
     @unittest.skipUnless(hasattr(os, "mkfifo"), "os.mkfifo() required")
     @unittest.skipIf(sys.platform == "vxworks",
@@ -2538,15 +3370,6 @@ def test_is_fifo_true(self):
         self.assertIs(self.cls(BASE, 'myfifo\udfff').is_fifo(), False)
         self.assertIs(self.cls(BASE, 'myfifo\x00').is_fifo(), False)
 
-    def test_is_socket_false(self):
-        P = self.cls(BASE)
-        self.assertFalse((P / 'fileA').is_socket())
-        self.assertFalse((P / 'dirA').is_socket())
-        self.assertFalse((P / 'non-existing').is_socket())
-        self.assertFalse((P / 'fileA' / 'bah').is_socket())
-        self.assertIs((P / 'fileA\udfff').is_socket(), False)
-        self.assertIs((P / 'fileA\x00').is_socket(), False)
-
     @unittest.skipUnless(hasattr(socket, "AF_UNIX"), "Unix sockets required")
     @unittest.skipIf(
         is_emscripten, "Unix sockets are not implemented on Emscripten."
@@ -2554,39 +3377,21 @@ def test_is_socket_false(self):
     @unittest.skipIf(
         is_wasi, "Cannot create socket on WASI."
     )
-    def test_is_socket_true(self):
-        P = self.cls(BASE, 'mysock')
-        sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-        self.addCleanup(sock.close)
-        try:
-            sock.bind(str(P))
-        except OSError as e:
-            if (isinstance(e, PermissionError) or
-                    "AF_UNIX path too long" in str(e)):
-                self.skipTest("cannot bind Unix socket: " + str(e))
-        self.assertTrue(P.is_socket())
-        self.assertFalse(P.is_fifo())
-        self.assertFalse(P.is_file())
-        self.assertIs(self.cls(BASE, 'mysock\udfff').is_socket(), False)
-        self.assertIs(self.cls(BASE, 'mysock\x00').is_socket(), False)
-
-    def test_is_block_device_false(self):
-        P = self.cls(BASE)
-        self.assertFalse((P / 'fileA').is_block_device())
-        self.assertFalse((P / 'dirA').is_block_device())
-        self.assertFalse((P / 'non-existing').is_block_device())
-        self.assertFalse((P / 'fileA' / 'bah').is_block_device())
-        self.assertIs((P / 'fileA\udfff').is_block_device(), False)
-        self.assertIs((P / 'fileA\x00').is_block_device(), False)
-
-    def test_is_char_device_false(self):
-        P = self.cls(BASE)
-        self.assertFalse((P / 'fileA').is_char_device())
-        self.assertFalse((P / 'dirA').is_char_device())
-        self.assertFalse((P / 'non-existing').is_char_device())
-        self.assertFalse((P / 'fileA' / 'bah').is_char_device())
-        self.assertIs((P / 'fileA\udfff').is_char_device(), False)
-        self.assertIs((P / 'fileA\x00').is_char_device(), False)
+    def test_is_socket_true(self):
+        P = self.cls(BASE, 'mysock')
+        sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        self.addCleanup(sock.close)
+        try:
+            sock.bind(str(P))
+        except OSError as e:
+            if (isinstance(e, PermissionError) or
+                    "AF_UNIX path too long" in str(e)):
+                self.skipTest("cannot bind Unix socket: " + str(e))
+        self.assertTrue(P.is_socket())
+        self.assertFalse(P.is_fifo())
+        self.assertFalse(P.is_file())
+        self.assertIs(self.cls(BASE, 'mysock\udfff').is_socket(), False)
+        self.assertIs(self.cls(BASE, 'mysock\x00').is_socket(), False)
 
     def test_is_char_device_true(self):
         # Under Unix, /dev/null should generally be a char device.
@@ -2599,251 +3404,44 @@ def test_is_char_device_true(self):
         self.assertIs(self.cls('/dev/null\udfff').is_char_device(), False)
         self.assertIs(self.cls('/dev/null\x00').is_char_device(), False)
 
-    def test_pickling_common(self):
-        p = self.cls(BASE, 'fileA')
-        for proto in range(0, pickle.HIGHEST_PROTOCOL + 1):
-            dumped = pickle.dumps(p, proto)
-            pp = pickle.loads(dumped)
-            self.assertEqual(pp.stat(), p.stat())
-
-    def test_parts_interning(self):
-        P = self.cls
-        p = P('/usr/bin/foo')
-        q = P('/usr/local/bin')
-        # 'usr'
-        self.assertIs(p.parts[1], q.parts[1])
-        # 'bin'
-        self.assertIs(p.parts[2], q.parts[3])
-
-    def _check_complex_symlinks(self, link0_target):
-        # Test solving a non-looping chain of symlinks (issue #19887).
-        P = self.cls(BASE)
-        self.dirlink(os.path.join('link0', 'link0'), join('link1'))
-        self.dirlink(os.path.join('link1', 'link1'), join('link2'))
-        self.dirlink(os.path.join('link2', 'link2'), join('link3'))
-        self.dirlink(link0_target, join('link0'))
-
-        # Resolve absolute paths.
-        p = (P / 'link0').resolve()
-        self.assertEqual(p, P)
-        self.assertEqualNormCase(str(p), BASE)
-        p = (P / 'link1').resolve()
-        self.assertEqual(p, P)
-        self.assertEqualNormCase(str(p), BASE)
-        p = (P / 'link2').resolve()
-        self.assertEqual(p, P)
-        self.assertEqualNormCase(str(p), BASE)
-        p = (P / 'link3').resolve()
-        self.assertEqual(p, P)
-        self.assertEqualNormCase(str(p), BASE)
-
-        # Resolve relative paths.
-        old_path = os.getcwd()
-        os.chdir(BASE)
-        try:
-            p = self.cls('link0').resolve()
-            self.assertEqual(p, P)
-            self.assertEqualNormCase(str(p), BASE)
-            p = self.cls('link1').resolve()
-            self.assertEqual(p, P)
-            self.assertEqualNormCase(str(p), BASE)
-            p = self.cls('link2').resolve()
-            self.assertEqual(p, P)
-            self.assertEqualNormCase(str(p), BASE)
-            p = self.cls('link3').resolve()
-            self.assertEqual(p, P)
-            self.assertEqualNormCase(str(p), BASE)
-        finally:
-            os.chdir(old_path)
-
-    @os_helper.skip_unless_symlink
-    def test_complex_symlinks_absolute(self):
-        self._check_complex_symlinks(BASE)
-
-    @os_helper.skip_unless_symlink
-    def test_complex_symlinks_relative(self):
-        self._check_complex_symlinks('.')
-
-    @os_helper.skip_unless_symlink
-    def test_complex_symlinks_relative_dot_dot(self):
-        self._check_complex_symlinks(os.path.join('dirA', '..'))
+    def test_is_mount_root(self):
+        if os.name == 'nt':
+            R = self.cls('c:\\')
+        else:
+            R = self.cls('/')
+        self.assertTrue(R.is_mount())
+        self.assertFalse((R / '\udfff').is_mount())
 
     def test_passing_kwargs_deprecated(self):
         with self.assertWarns(DeprecationWarning):
             self.cls(foo="bar")
 
-
-class WalkTests(unittest.TestCase):
-
-    def setUp(self):
-        self.addCleanup(os_helper.rmtree, os_helper.TESTFN)
-
-        # Build:
-        #     TESTFN/
-        #       TEST1/              a file kid and two directory kids
-        #         tmp1
-        #         SUB1/             a file kid and a directory kid
-        #           tmp2
-        #           SUB11/          no kids
-        #         SUB2/             a file kid and a dirsymlink kid
-        #           tmp3
-        #           SUB21/          not readable
-        #             tmp5
-        #           link/           a symlink to TEST2
-        #           broken_link
-        #           broken_link2
-        #           broken_link3
-        #       TEST2/
-        #         tmp4              a lone file
-        self.walk_path = pathlib.Path(os_helper.TESTFN, "TEST1")
-        self.sub1_path = self.walk_path / "SUB1"
-        self.sub11_path = self.sub1_path / "SUB11"
-        self.sub2_path = self.walk_path / "SUB2"
+    def setUpWalk(self):
+        super().setUpWalk()
         sub21_path= self.sub2_path / "SUB21"
-        tmp1_path = self.walk_path / "tmp1"
-        tmp2_path = self.sub1_path / "tmp2"
-        tmp3_path = self.sub2_path / "tmp3"
         tmp5_path = sub21_path / "tmp3"
-        self.link_path = self.sub2_path / "link"
-        t2_path = pathlib.Path(os_helper.TESTFN, "TEST2")
-        tmp4_path = pathlib.Path(os_helper.TESTFN, "TEST2", "tmp4")
-        broken_link_path = self.sub2_path / "broken_link"
-        broken_link2_path = self.sub2_path / "broken_link2"
         broken_link3_path = self.sub2_path / "broken_link3"
 
-        os.makedirs(self.sub11_path)
-        os.makedirs(self.sub2_path)
         os.makedirs(sub21_path)
-        os.makedirs(t2_path)
-
-        for path in tmp1_path, tmp2_path, tmp3_path, tmp4_path, tmp5_path:
-            with open(path, "x", encoding='utf-8') as f:
-                f.write(f"I'm {path} and proud of it.  Blame test_pathlib.\n")
-
-        if os_helper.can_symlink():
-            os.symlink(os.path.abspath(t2_path), self.link_path)
-            os.symlink('broken', broken_link_path, True)
-            os.symlink(pathlib.Path('tmp3', 'broken'), broken_link2_path, True)
-            os.symlink(pathlib.Path('SUB21', 'tmp5'), broken_link3_path, True)
-            self.sub2_tree = (self.sub2_path, ["SUB21"],
-                              ["broken_link", "broken_link2", "broken_link3",
-                               "link", "tmp3"])
-        else:
-            self.sub2_tree = (self.sub2_path, ["SUB21"], ["tmp3"])
-
+        tmp5_path.write_text("I am tmp5, blame test_pathlib.")
+        if self.can_symlink:
+            os.symlink(tmp5_path, broken_link3_path)
+            self.sub2_tree[2].append('broken_link3')
+            self.sub2_tree[2].sort()
         if not is_emscripten:
             # Emscripten fails with inaccessible directories.
             os.chmod(sub21_path, 0)
         try:
             os.listdir(sub21_path)
         except PermissionError:
-            self.addCleanup(os.chmod, sub21_path, stat.S_IRWXU)
+            self.sub2_tree[1].append('SUB21')
         else:
             os.chmod(sub21_path, stat.S_IRWXU)
             os.unlink(tmp5_path)
             os.rmdir(sub21_path)
-            del self.sub2_tree[1][:1]
-
-    def test_walk_topdown(self):
-        walker = self.walk_path.walk()
-        entry = next(walker)
-        entry[1].sort()  # Ensure we visit SUB1 before SUB2
-        self.assertEqual(entry, (self.walk_path, ["SUB1", "SUB2"], ["tmp1"]))
-        entry = next(walker)
-        self.assertEqual(entry, (self.sub1_path, ["SUB11"], ["tmp2"]))
-        entry = next(walker)
-        self.assertEqual(entry, (self.sub11_path, [], []))
-        entry = next(walker)
-        entry[1].sort()
-        entry[2].sort()
-        self.assertEqual(entry, self.sub2_tree)
-        with self.assertRaises(StopIteration):
-            next(walker)
-
-    def test_walk_prune(self, walk_path=None):
-        if walk_path is None:
-            walk_path = self.walk_path
-        # Prune the search.
-        all = []
-        for root, dirs, files in walk_path.walk():
-            all.append((root, dirs, files))
-            if 'SUB1' in dirs:
-                # Note that this also mutates the dirs we appended to all!
-                dirs.remove('SUB1')
-
-        self.assertEqual(len(all), 2)
-        self.assertEqual(all[0], (self.walk_path, ["SUB2"], ["tmp1"]))
-
-        all[1][-1].sort()
-        all[1][1].sort()
-        self.assertEqual(all[1], self.sub2_tree)
-
-    def test_file_like_path(self):
-        self.test_walk_prune(FakePath(self.walk_path).__fspath__())
-
-    def test_walk_bottom_up(self):
-        seen_testfn = seen_sub1 = seen_sub11 = seen_sub2 = False
-        for path, dirnames, filenames in self.walk_path.walk(top_down=False):
-            if path == self.walk_path:
-                self.assertFalse(seen_testfn)
-                self.assertTrue(seen_sub1)
-                self.assertTrue(seen_sub2)
-                self.assertEqual(sorted(dirnames), ["SUB1", "SUB2"])
-                self.assertEqual(filenames, ["tmp1"])
-                seen_testfn = True
-            elif path == self.sub1_path:
-                self.assertFalse(seen_testfn)
-                self.assertFalse(seen_sub1)
-                self.assertTrue(seen_sub11)
-                self.assertEqual(dirnames, ["SUB11"])
-                self.assertEqual(filenames, ["tmp2"])
-                seen_sub1 = True
-            elif path == self.sub11_path:
-                self.assertFalse(seen_sub1)
-                self.assertFalse(seen_sub11)
-                self.assertEqual(dirnames, [])
-                self.assertEqual(filenames, [])
-                seen_sub11 = True
-            elif path == self.sub2_path:
-                self.assertFalse(seen_testfn)
-                self.assertFalse(seen_sub2)
-                self.assertEqual(sorted(dirnames), sorted(self.sub2_tree[1]))
-                self.assertEqual(sorted(filenames), sorted(self.sub2_tree[2]))
-                seen_sub2 = True
-            else:
-                raise AssertionError(f"Unexpected path: {path}")
-        self.assertTrue(seen_testfn)
-
-    @os_helper.skip_unless_symlink
-    def test_walk_follow_symlinks(self):
-        walk_it = self.walk_path.walk(follow_symlinks=True)
-        for root, dirs, files in walk_it:
-            if root == self.link_path:
-                self.assertEqual(dirs, [])
-                self.assertEqual(files, ["tmp4"])
-                break
-        else:
-            self.fail("Didn't follow symlink with follow_symlinks=True")
-
-    @os_helper.skip_unless_symlink
-    def test_walk_symlink_location(self):
-        # Tests whether symlinks end up in filenames or dirnames depending
-        # on the `follow_symlinks` argument.
-        walk_it = self.walk_path.walk(follow_symlinks=False)
-        for root, dirs, files in walk_it:
-            if root == self.sub2_path:
-                self.assertIn("link", files)
-                break
-        else:
-            self.fail("symlink not found")
-
-        walk_it = self.walk_path.walk(follow_symlinks=True)
-        for root, dirs, files in walk_it:
-            if root == self.sub2_path:
-                self.assertIn("link", dirs)
-                break
 
     def test_walk_bad_dir(self):
+        self.setUpWalk()
         errors = []
         walk_it = self.walk_path.walk(on_error=errors.append)
         root, dirs, files = next(walk_it)
@@ -2865,8 +3463,8 @@ def test_walk_bad_dir(self):
 
     def test_walk_many_open_files(self):
         depth = 30
-        base = pathlib.Path(os_helper.TESTFN, 'deep')
-        path = pathlib.Path(base, *(['d']*depth))
+        base = self.cls(BASE, 'deep')
+        path = self.cls(base, *(['d']*depth))
         path.mkdir(parents=True)
 
         iters = [base.walk(top_down=False) for _ in range(100)]
@@ -2884,41 +3482,9 @@ def test_walk_many_open_files(self):
                 self.assertEqual(next(it), expected)
             path = path / 'd'
 
-    def test_walk_above_recursion_limit(self):
-        recursion_limit = 40
-        # directory_depth > recursion_limit
-        directory_depth = recursion_limit + 10
-        base = pathlib.Path(os_helper.TESTFN, 'deep')
-        path = pathlib.Path(base, *(['d'] * directory_depth))
-        path.mkdir(parents=True)
-
-        with set_recursion_limit(recursion_limit):
-            list(base.walk())
-            list(base.walk(top_down=False))
-
-
-class PathTest(_BasePathTest, unittest.TestCase):
-    cls = pathlib.Path
-
-    def test_concrete_class(self):
-        p = self.cls('a')
-        self.assertIs(type(p),
-            pathlib.WindowsPath if os.name == 'nt' else pathlib.PosixPath)
-
-    def test_unsupported_flavour(self):
-        if os.name == 'nt':
-            self.assertRaises(NotImplementedError, pathlib.PosixPath)
-        else:
-            self.assertRaises(NotImplementedError, pathlib.WindowsPath)
-
-    def test_glob_empty_pattern(self):
-        p = self.cls()
-        with self.assertRaisesRegex(ValueError, 'Unacceptable pattern'):
-            list(p.glob(''))
-
 
 @only_posix
-class PosixPathTest(_BasePathTest, unittest.TestCase):
+class PosixPathTest(PathTest, PurePosixPathTest):
     cls = pathlib.PosixPath
 
     def test_absolute(self):
@@ -2932,11 +3498,6 @@ def test_absolute(self):
         self.assertEqual(str(P('//a').absolute()), '//a')
         self.assertEqual(str(P('//a/b').absolute()), '//a/b')
 
-    def _check_symlink_loop(self, *args, strict=True):
-        path = self.cls(*args)
-        with self.assertRaises(RuntimeError):
-            print(path.resolve(strict))
-
     @unittest.skipIf(
         is_emscripten or is_wasi,
         "umask is not implemented on Emscripten/WASI."
@@ -2983,27 +3544,6 @@ def test_touch_mode(self):
         st = os.stat(join('masked_new_file'))
         self.assertEqual(stat.S_IMODE(st.st_mode), 0o750)
 
-    @os_helper.skip_unless_symlink
-    def test_resolve_loop(self):
-        # Loops with relative symlinks.
-        os.symlink('linkX/inside', join('linkX'))
-        self._check_symlink_loop(BASE, 'linkX')
-        os.symlink('linkY', join('linkY'))
-        self._check_symlink_loop(BASE, 'linkY')
-        os.symlink('linkZ/../linkZ', join('linkZ'))
-        self._check_symlink_loop(BASE, 'linkZ')
-        # Non-strict
-        self._check_symlink_loop(BASE, 'linkZ', 'foo', strict=False)
-        # Loops with absolute symlinks.
-        os.symlink(join('linkU/inside'), join('linkU'))
-        self._check_symlink_loop(BASE, 'linkU')
-        os.symlink(join('linkV'), join('linkV'))
-        self._check_symlink_loop(BASE, 'linkV')
-        os.symlink(join('linkW/../linkW'), join('linkW'))
-        self._check_symlink_loop(BASE, 'linkW')
-        # Non-strict
-        self._check_symlink_loop(BASE, 'linkW', 'foo', strict=False)
-
     def test_glob(self):
         P = self.cls
         p = P(BASE)
@@ -3100,9 +3640,27 @@ def test_handling_bad_descriptor(self):
                 self.fail("Bad file descriptor not handled.")
             raise
 
+    def test_from_uri(self):
+        P = self.cls
+        self.assertEqual(P.from_uri('file:/foo/bar'), P('/foo/bar'))
+        self.assertEqual(P.from_uri('file://foo/bar'), P('//foo/bar'))
+        self.assertEqual(P.from_uri('file:///foo/bar'), P('/foo/bar'))
+        self.assertEqual(P.from_uri('file:////foo/bar'), P('//foo/bar'))
+        self.assertEqual(P.from_uri('file://localhost/foo/bar'), P('/foo/bar'))
+        self.assertRaises(ValueError, P.from_uri, 'foo/bar')
+        self.assertRaises(ValueError, P.from_uri, '/foo/bar')
+        self.assertRaises(ValueError, P.from_uri, '//foo/bar')
+        self.assertRaises(ValueError, P.from_uri, 'file:foo/bar')
+        self.assertRaises(ValueError, P.from_uri, 'http://foo/bar')
+
+    def test_from_uri_pathname2url(self):
+        P = self.cls
+        self.assertEqual(P.from_uri('file:' + pathname2url('/foo/bar')), P('/foo/bar'))
+        self.assertEqual(P.from_uri('file:' + pathname2url('//foo/bar')), P('//foo/bar'))
+
 
 @only_nt
-class WindowsPathTest(_BasePathTest, unittest.TestCase):
+class WindowsPathTest(PathTest, PureWindowsPathTest):
     cls = pathlib.WindowsPath
 
     def test_absolute(self):
@@ -3154,7 +3712,7 @@ def test_glob(self):
         P = self.cls
         p = P(BASE)
         self.assertEqual(set(p.glob("FILEa")), { P(BASE, "fileA") })
-        self.assertEqual(set(p.glob("*a\\")), { P(BASE, "dirA") })
+        self.assertEqual(set(p.glob("*a\\")), { P(BASE, "dirA/") })
         self.assertEqual(set(p.glob("F*a")), { P(BASE, "fileA") })
         self.assertEqual(set(map(str, p.glob("FILEa"))), {f"{p}\\fileA"})
         self.assertEqual(set(map(str, p.glob("F*a"))), {f"{p}\\fileA"})
@@ -3163,7 +3721,7 @@ def test_rglob(self):
         P = self.cls
         p = P(BASE, "dirC")
         self.assertEqual(set(p.rglob("FILEd")), { P(BASE, "dirC/dirD/fileD") })
-        self.assertEqual(set(p.rglob("*\\")), { P(BASE, "dirC/dirD") })
+        self.assertEqual(set(p.rglob("*\\")), { P(BASE, "dirC/dirD/") })
         self.assertEqual(set(map(str, p.rglob("FILEd"))), {f"{p}\\dirD\\fileD"})
 
     def test_expanduser(self):
@@ -3219,16 +3777,44 @@ def check():
             env['HOME'] = 'C:\\Users\\eve'
             check()
 
+    def test_from_uri(self):
+        P = self.cls
+        # DOS drive paths
+        self.assertEqual(P.from_uri('file:c:/path/to/file'), P('c:/path/to/file'))
+        self.assertEqual(P.from_uri('file:c|/path/to/file'), P('c:/path/to/file'))
+        self.assertEqual(P.from_uri('file:/c|/path/to/file'), P('c:/path/to/file'))
+        self.assertEqual(P.from_uri('file:///c|/path/to/file'), P('c:/path/to/file'))
+        # UNC paths
+        self.assertEqual(P.from_uri('file://server/path/to/file'), P('//server/path/to/file'))
+        self.assertEqual(P.from_uri('file:////server/path/to/file'), P('//server/path/to/file'))
+        self.assertEqual(P.from_uri('file://///server/path/to/file'), P('//server/path/to/file'))
+        # Localhost paths
+        self.assertEqual(P.from_uri('file://localhost/c:/path/to/file'), P('c:/path/to/file'))
+        self.assertEqual(P.from_uri('file://localhost/c|/path/to/file'), P('c:/path/to/file'))
+        # Invalid paths
+        self.assertRaises(ValueError, P.from_uri, 'foo/bar')
+        self.assertRaises(ValueError, P.from_uri, 'c:/foo/bar')
+        self.assertRaises(ValueError, P.from_uri, '//foo/bar')
+        self.assertRaises(ValueError, P.from_uri, 'file:foo/bar')
+        self.assertRaises(ValueError, P.from_uri, 'http://foo/bar')
+
+    def test_from_uri_pathname2url(self):
+        P = self.cls
+        self.assertEqual(P.from_uri('file:' + pathname2url(r'c:\path\to\file')), P('c:/path/to/file'))
+        self.assertEqual(P.from_uri('file:' + pathname2url(r'\\server\path\to\file')), P('//server/path/to/file'))
 
-class PurePathSubclassTest(_BasePurePathTest, unittest.TestCase):
-    class cls(pathlib.PurePath):
-        pass
+    def test_owner(self):
+        P = self.cls
+        with self.assertRaises(pathlib.UnsupportedOperation):
+            P('c:/').owner()
 
-    # repr() roundtripping is not supported in custom subclass.
-    test_repr_roundtrips = None
+    def test_group(self):
+        P = self.cls
+        with self.assertRaises(pathlib.UnsupportedOperation):
+            P('c:/').group()
 
 
-class PathSubclassTest(_BasePathTest, unittest.TestCase):
+class PathSubclassTest(PathTest):
     class cls(pathlib.Path):
         pass
 
diff --git a/Lib/test/test_patma.py b/Lib/test/test_patma.py
index 3dbd19dfffd318..dedbc828784184 100644
--- a/Lib/test/test_patma.py
+++ b/Lib/test/test_patma.py
@@ -2460,12 +2460,27 @@ class Eq:
             def __eq__(self, other):
                 return True
         x = eq = Eq()
+        # None
         y = None
         match x:
             case None:
                 y = 0
         self.assertIs(x, eq)
         self.assertEqual(y, None)
+        # True
+        y = None
+        match x:
+            case True:
+                y = 0
+        self.assertIs(x, eq)
+        self.assertEqual(y, None)
+        # False
+        y = None
+        match x:
+            case False:
+                y = 0
+        self.assertIs(x, eq)
+        self.assertEqual(y, None)
 
     def test_patma_233(self):
         x = False
@@ -2668,6 +2683,83 @@ def f(self, x):
         setattr(c, "__attr", "spam")  # setattr is needed because we're in a class scope
         self.assertEqual(Outer().f(c), "spam")
 
+    def test_patma_250(self):
+        def f(x):
+            match x:
+                case {"foo": y} if y >= 0:
+                    return True
+                case {"foo": y} if y < 0:
+                    return False
+
+        self.assertIs(f({"foo": 1}), True)
+        self.assertIs(f({"foo": -1}), False)
+
+    def test_patma_251(self):
+        def f(v, x):
+            match v:
+                case x.attr if x.attr >= 0:
+                    return True
+                case x.attr if x.attr < 0:
+                    return False
+                case _:
+                    return None
+
+        class X:
+            def __init__(self, attr):
+                self.attr = attr
+
+        self.assertIs(f(1, X(1)), True)
+        self.assertIs(f(-1, X(-1)), False)
+        self.assertIs(f(1, X(-1)), None)
+
+    def test_patma_252(self):
+        # Side effects must be possible in guards:
+        effects = []
+        def lt(x, y):
+            effects.append((x, y))
+            return x < y
+
+        res = None
+        match {"foo": 1}:
+            case {"foo": x} if lt(x, 0):
+                res = 0
+            case {"foo": x} if lt(x, 1):
+                res = 1
+            case {"foo": x} if lt(x, 2):
+                res = 2
+
+        self.assertEqual(res, 2)
+        self.assertEqual(effects, [(1, 0), (1, 1), (1, 2)])
+
+    def test_patma_253(self):
+        def f(v):
+            match v:
+                case [x] | x:
+                    return x
+
+        self.assertEqual(f(1), 1)
+        self.assertEqual(f([1]), 1)
+
+    def test_patma_254(self):
+        def f(v):
+            match v:
+                case {"x": x} | x:
+                    return x
+
+        self.assertEqual(f(1), 1)
+        self.assertEqual(f({"x": 1}), 1)
+
+    def test_patma_255(self):
+        x = []
+        match x:
+            case [] as z if z.append(None):
+                y = 0
+            case [None]:
+                y = 1
+        self.assertEqual(x, [None])
+        self.assertEqual(y, 1)
+        self.assertIs(z, x)
+
 
 class TestSyntaxErrors(unittest.TestCase):
 
@@ -2885,6 +2977,37 @@ def test_real_number_required_in_complex_literal_3(self):
                 pass
         """)
 
+    def test_real_number_multiple_ops(self):
+        self.assert_syntax_error("""
+        match ...:
+            case 0 + 0j + 0:
+                pass
+        """)
+
+    def test_real_number_wrong_ops(self):
+        for op in ["*", "/", "@", "**", "%", "//"]:
+            with self.subTest(op=op):
+                self.assert_syntax_error(f"""
+                match ...:
+                    case 0 {op} 0j:
+                        pass
+                """)
+                self.assert_syntax_error(f"""
+                match ...:
+                    case 0j {op} 0:
+                        pass
+                """)
+                self.assert_syntax_error(f"""
+                match ...:
+                    case -0j {op} 0:
+                        pass
+                """)
+                self.assert_syntax_error(f"""
+                match ...:
+                    case 0j {op} -0:
+                        pass
+                """)
+
     def test_wildcard_makes_remaining_patterns_unreachable_0(self):
         self.assert_syntax_error("""
         match ...:
@@ -3067,6 +3190,14 @@ class Class:
         self.assertIs(y, None)
         self.assertIs(z, None)
 
+    def test_class_pattern_not_type(self):
+        w = None
+        with self.assertRaises(TypeError):
+            match 1:
+                case max(0, 1):
+                    w = 0
+        self.assertIsNone(w)
+
 
 class TestValueErrors(unittest.TestCase):
 
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 83c7cdff87fd34..d53fe3c611bc35 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -15,6 +15,8 @@
 from io import StringIO
 from test import support
 from test.support import os_helper
+from test.support.import_helper import import_module
+from test.support.pty_helper import run_pty
 # This little helper class is essential for testing pdb under doctest.
 from test.test_doctest import _FakeInput
 from unittest.mock import patch
@@ -334,9 +336,11 @@ def test_pdb_breakpoint_commands():
     (Pdb) commands 10
     *** cannot set commands: Breakpoint number 10 out of range
     (Pdb) commands a
-    *** Usage: commands [bnum]
-            ...
-            end
+    *** Invalid argument: a
+          Usage: (Pdb) commands [bpnumber]
+                 (com) ...
+                 (com) end
+                 (Pdb)
     (Pdb) commands 4
     *** cannot set commands: Breakpoint 4 already deleted
     (Pdb) break 6, undefined
@@ -387,7 +391,7 @@ def test_pdb_breakpoints_preserved_across_interactive_sessions():
     1   breakpoint   keep yes   at ...test_pdb.py:...
     2   breakpoint   keep yes   at ...test_pdb.py:...
     (Pdb) break pdb.find_function
-    Breakpoint 3 at ...pdb.py:97
+    Breakpoint 3 at ...pdb.py:...
     (Pdb) break
     Num Type         Disp Enb   Where
     1   breakpoint   keep yes   at ...test_pdb.py:...
@@ -662,18 +666,32 @@ def test_pdb_alias_command():
     ...     o.method()
 
     >>> with PdbTestInput([  # doctest: +ELLIPSIS
+    ...     'alias pi',
     ...     'alias pi for k in %1.__dict__.keys(): print(f"%1.{k} = {%1.__dict__[k]}")',
     ...     'alias ps pi self',
+    ...     'alias ps',
     ...     'pi o',
     ...     's',
     ...     'ps',
+    ...     'alias myp p %2',
+    ...     'alias myp',
+    ...     'alias myp p %1',
+    ...     'myp',
+    ...     'myp 1',
+    ...     'myp 1 2',
+    ...     'alias repeat_second_arg p "%* %2"',
+    ...     'repeat_second_arg 1 2 3',
     ...     'continue',
     ... ]):
     ...    test_function()
     > <doctest test.test_pdb.test_pdb_alias_command[1]>(4)test_function()
     -> o.method()
+    (Pdb) alias pi
+    *** Unknown alias 'pi'
     (Pdb) alias pi for k in %1.__dict__.keys(): print(f"%1.{k} = {%1.__dict__[k]}")
     (Pdb) alias ps pi self
+    (Pdb) alias ps
+    ps = pi self
     (Pdb) pi o
     o.attr1 = 10
     o.attr2 = str
@@ -684,6 +702,20 @@ def test_pdb_alias_command():
     (Pdb) ps
     self.attr1 = 10
     self.attr2 = str
+    (Pdb) alias myp p %2
+    *** Replaceable parameters must be consecutive
+    (Pdb) alias myp
+    *** Unknown alias 'myp'
+    (Pdb) alias myp p %1
+    (Pdb) myp
+    *** Not enough arguments for alias 'myp'
+    (Pdb) myp 1
+    1
+    (Pdb) myp 1 2
+    *** Too many arguments for alias 'myp'
+    (Pdb) alias repeat_second_arg p "%* %2"
+    (Pdb) repeat_second_arg 1 2 3
+    '1 2 3 2'
     (Pdb) continue
     """
 
@@ -746,6 +778,59 @@ def test_pdb_where_command():
     (Pdb) continue
     """
 
+def test_pdb_interact_command():
+    """Test interact command
+
+    >>> g = 0
+    >>> dict_g = {}
+
+    >>> def test_function():
+    ...     x = 1
+    ...     lst_local = []
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     'interact',
+    ...     'x',
+    ...     'g',
+    ...     'x = 2',
+    ...     'g = 3',
+    ...     'dict_g["a"] = True',
+    ...     'lst_local.append(x)',
+    ...     'exit()',
+    ...     'p x',
+    ...     'p g',
+    ...     'p dict_g',
+    ...     'p lst_local',
+    ...     'continue',
+    ... ]):
+    ...    test_function()
+    --Return--
+    > <doctest test.test_pdb.test_pdb_interact_command[2]>(4)test_function()->None
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) interact
+    *pdb interact start*
+    ... x
+    1
+    ... g
+    0
+    ... x = 2
+    ... g = 3
+    ... dict_g["a"] = True
+    ... lst_local.append(x)
+    ... exit()
+    *exit from pdb interact command*
+    (Pdb) p x
+    1
+    (Pdb) p g
+    0
+    (Pdb) p dict_g
+    {'a': True}
+    (Pdb) p lst_local
+    [2]
+    (Pdb) continue
+    """
+
 def test_convenience_variables():
     """Test convenience variables
 
@@ -824,6 +909,414 @@ def test_convenience_variables():
     (Pdb) continue
     """
 
+
+def test_post_mortem_chained():
+    """Test post mortem traceback debugging of chained exception
+
+    >>> def test_function_2():
+    ...     try:
+    ...         1/0
+    ...     finally:
+    ...         print('Exception!')
+
+    >>> def test_function_reraise():
+    ...     try:
+    ...         test_function_2()
+    ...     except ZeroDivisionError as e:
+    ...         raise ZeroDivisionError('reraised') from e
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     try:
+    ...         test_function_reraise()
+    ...     except Exception as e:
+    ...         pdb._post_mortem(e, instance)
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     'exceptions',
+    ...     'exceptions 0',
+    ...     '$_exception',
+    ...     'up',
+    ...     'down',
+    ...     'exceptions 1',
+    ...     '$_exception',
+    ...     'up',
+    ...     'down',
+    ...     'exceptions -1',
+    ...     'exceptions 3',
+    ...     'up',
+    ...     'exit',
+    ... ]):
+    ...    try:
+    ...        test_function()
+    ...    except ZeroDivisionError:
+    ...        print('Correctly reraised.')
+    Exception!
+    > <doctest test.test_pdb.test_post_mortem_chained[1]>(5)test_function_reraise()
+    -> raise ZeroDivisionError('reraised') from e
+    (Pdb) exceptions
+      0 ZeroDivisionError('division by zero')
+    > 1 ZeroDivisionError('reraised')
+    (Pdb) exceptions 0
+    > <doctest test.test_pdb.test_post_mortem_chained[0]>(3)test_function_2()
+    -> 1/0
+    (Pdb) $_exception
+    ZeroDivisionError('division by zero')
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_chained[1]>(3)test_function_reraise()
+    -> test_function_2()
+    (Pdb) down
+    > <doctest test.test_pdb.test_post_mortem_chained[0]>(3)test_function_2()
+    -> 1/0
+    (Pdb) exceptions 1
+    > <doctest test.test_pdb.test_post_mortem_chained[1]>(5)test_function_reraise()
+    -> raise ZeroDivisionError('reraised') from e
+    (Pdb) $_exception
+    ZeroDivisionError('reraised')
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_chained[2]>(5)test_function()
+    -> test_function_reraise()
+    (Pdb) down
+    > <doctest test.test_pdb.test_post_mortem_chained[1]>(5)test_function_reraise()
+    -> raise ZeroDivisionError('reraised') from e
+    (Pdb) exceptions -1
+    *** No exception with that number
+    (Pdb) exceptions 3
+    *** No exception with that number
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_chained[2]>(5)test_function()
+    -> test_function_reraise()
+    (Pdb) exit
+    """
+
+
+def test_post_mortem_cause_no_context():
+    """Test post mortem traceback debugging of chained exception
+
+    >>> def make_exc_with_stack(type_, *content, from_=None):
+    ...     try:
+    ...         raise type_(*content) from from_
+    ...     except Exception as out:
+    ...         return out
+    ...
+
+    >>> def main():
+    ...     try:
+    ...         raise ValueError('Context Not Shown')
+    ...     except Exception as e1:
+    ...         raise ValueError("With Cause") from make_exc_with_stack(TypeError,'The Cause')
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     try:
+    ...         main()
+    ...     except Exception as e:
+    ...         pdb._post_mortem(e, instance)
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     'exceptions',
+    ...     'exceptions 0',
+    ...     'exceptions 1',
+    ...     'up',
+    ...     'down',
+    ...     'exit',
+    ... ]):
+    ...    try:
+    ...        test_function()
+    ...    except ValueError:
+    ...        print('Ok.')
+    > <doctest test.test_pdb.test_post_mortem_cause_no_context[1]>(5)main()
+    -> raise ValueError("With Cause") from make_exc_with_stack(TypeError,'The Cause')
+    (Pdb) exceptions
+        0 TypeError('The Cause')
+    >   1 ValueError('With Cause')
+    (Pdb) exceptions 0
+    > <doctest test.test_pdb.test_post_mortem_cause_no_context[0]>(3)make_exc_with_stack()
+    -> raise type_(*content) from from_
+    (Pdb) exceptions 1
+    > <doctest test.test_pdb.test_post_mortem_cause_no_context[1]>(5)main()
+    -> raise ValueError("With Cause") from make_exc_with_stack(TypeError,'The Cause')
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_cause_no_context[2]>(5)test_function()
+    -> main()
+    (Pdb) down
+    > <doctest test.test_pdb.test_post_mortem_cause_no_context[1]>(5)main()
+    -> raise ValueError("With Cause") from make_exc_with_stack(TypeError,'The Cause')
+    (Pdb) exit"""
+
+
+def test_post_mortem_context_of_the_cause():
+    """Test post mortem traceback debugging of chained exception
+
+
+    >>> def main():
+    ...     try:
+    ...         raise TypeError('Context of the cause')
+    ...     except Exception as e1:
+    ...         try:
+    ...             raise ValueError('Root Cause')
+    ...         except Exception as e2:
+    ...             ex = e2
+    ...         raise ValueError("With Cause, and cause has context") from ex
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     try:
+    ...         main()
+    ...     except Exception as e:
+    ...         pdb._post_mortem(e, instance)
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     'exceptions',
+    ...     'exceptions 2',
+    ...     'up',
+    ...     'down',
+    ...     'exceptions 3',
+    ...     'up',
+    ...     'down',
+    ...     'exceptions 4',
+    ...     'up',
+    ...     'down',
+    ...     'exit',
+    ... ]):
+    ...    try:
+    ...        test_function()
+    ...    except ValueError:
+    ...        print('Correctly reraised.')
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[0]>(9)main()
+    -> raise ValueError("With Cause, and cause has context") from ex
+    (Pdb) exceptions
+      0 TypeError('Context of the cause')
+      1 ValueError('Root Cause')
+    > 2 ValueError('With Cause, and cause has context')
+    (Pdb) exceptions 2
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[0]>(9)main()
+    -> raise ValueError("With Cause, and cause has context") from ex
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[1]>(5)test_function()
+    -> main()
+    (Pdb) down
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[0]>(9)main()
+    -> raise ValueError("With Cause, and cause has context") from ex
+    (Pdb) exceptions 3
+    *** No exception with that number
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[1]>(5)test_function()
+    -> main()
+    (Pdb) down
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[0]>(9)main()
+    -> raise ValueError("With Cause, and cause has context") from ex
+    (Pdb) exceptions 4
+    *** No exception with that number
+    (Pdb) up
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[1]>(5)test_function()
+    -> main()
+    (Pdb) down
+    > <doctest test.test_pdb.test_post_mortem_context_of_the_cause[0]>(9)main()
+    -> raise ValueError("With Cause, and cause has context") from ex
+    (Pdb) exit
+    """
+
+
+def test_post_mortem_from_none():
+    """Test post mortem traceback debugging of chained exception
+
+    In particular that cause from None (which sets __supress_context__ to True)
+    does not show context.
+
+
+    >>> def main():
+    ...     try:
+    ...         raise TypeError('Context of the cause')
+    ...     except Exception as e1:
+    ...         raise ValueError("With Cause, and cause has context") from None
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     try:
+    ...         main()
+    ...     except Exception as e:
+    ...         pdb._post_mortem(e, instance)
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     'exceptions',
+    ...     'exit',
+    ... ]):
+    ...    try:
+    ...        test_function()
+    ...    except ValueError:
+    ...        print('Correctly reraised.')
+    > <doctest test.test_pdb.test_post_mortem_from_none[0]>(5)main()
+    -> raise ValueError("With Cause, and cause has context") from None
+    (Pdb) exceptions
+    > 0 ValueError('With Cause, and cause has context')
+    (Pdb) exit
+    """
+
+
+def test_post_mortem_from_no_stack():
+    """Test post mortem traceback debugging of chained exception
+
+    especially when one exception has no stack.
+
+    >>> def main():
+    ...     raise Exception() from Exception()
+
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     try:
+    ...         main()
+    ...     except Exception as e:
+    ...         pdb._post_mortem(e, instance)
+
+    >>> with PdbTestInput(  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     ["exceptions",
+    ...      "exceptions 0",
+    ...     "exit"],
+    ... ):
+    ...    try:
+    ...        test_function()
+    ...    except ValueError:
+    ...        print('Correctly reraised.')
+    > <doctest test.test_pdb.test_post_mortem_from_no_stack[0]>(2)main()
+    -> raise Exception() from Exception()
+    (Pdb) exceptions
+        - Exception()
+    >   1 Exception()
+    (Pdb) exceptions 0
+    *** This exception does not have a traceback, cannot jump to it
+    (Pdb) exit
+    """
+
+
+def test_post_mortem_single_no_stack():
+    """Test post mortem called when origin exception has no stack
+
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     import sys
+    ...     sys.last_exc = Exception()
+    ...     pdb._post_mortem(sys.last_exc, instance)
+
+    >>> with PdbTestInput(  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     []
+    ... ):
+    ...    try:
+    ...        test_function()
+    ...    except ValueError as e:
+    ...        print(e)
+    A valid traceback must be passed if no exception is being handled
+    """
+
+def test_post_mortem_complex():
+    """Test post mortem traceback debugging of chained exception
+
+    Test with simple and complex cycles, exception groups,...
+
+    >>> def make_ex_with_stack(type_, *content, from_=None):
+    ...     try:
+    ...         raise type_(*content) from from_
+    ...     except Exception as out:
+    ...         return out
+    ...
+
+    >>> def cycle():
+    ...     try:
+    ...         raise ValueError("Cycle Leaf")
+    ...     except Exception as e:
+    ...         raise e from e
+    ...
+
+    >>> def tri_cycle():
+    ...     a = make_ex_with_stack(ValueError, "Cycle1")
+    ...     b = make_ex_with_stack(ValueError, "Cycle2")
+    ...     c = make_ex_with_stack(ValueError, "Cycle3")
+    ...
+    ...     a.__cause__ = b
+    ...     b.__cause__ = c
+    ...
+    ...     raise c from a
+    ...
+
+    >>> def cause():
+    ...     try:
+    ...         raise ValueError("Cause Leaf")
+    ...     except Exception as e:
+    ...         raise e
+    ...
+
+    >>> def context(n=10):
+    ...     try:
+    ...         raise ValueError(f"Context Leaf {n}")
+    ...     except Exception as e:
+    ...         if n == 0:
+    ...             raise ValueError(f"With Context {n}") from e
+    ...         else:
+    ...             context(n - 1)
+    ...
+
+    >>> def main():
+    ...     try:
+    ...         cycle()
+    ...     except Exception as e1:
+    ...         try:
+    ...             tri_cycle()
+    ...         except Exception as e2:
+    ...             ex = e2
+    ...         raise ValueError("With Context and With Cause") from ex
+
+
+    >>> def test_function():
+    ...     import pdb;
+    ...     instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     try:
+    ...         main()
+    ...     except Exception as e:
+    ...         pdb._post_mortem(e, instance)
+
+    >>> with PdbTestInput(  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     ["exceptions",
+    ...     "exceptions 0",
+    ...     "exceptions 1",
+    ...     "exceptions 2",
+    ...     "exceptions 3",
+    ...     "exit"],
+    ... ):
+    ...    try:
+    ...        test_function()
+    ...    except ValueError:
+    ...        print('Correctly reraised.')
+        > <doctest test.test_pdb.test_post_mortem_complex[5]>(9)main()
+    -> raise ValueError("With Context and With Cause") from ex
+    (Pdb) exceptions
+        0 ValueError('Cycle2')
+        1 ValueError('Cycle1')
+        2 ValueError('Cycle3')
+    >   3 ValueError('With Context and With Cause')
+    (Pdb) exceptions 0
+    > <doctest test.test_pdb.test_post_mortem_complex[0]>(3)make_ex_with_stack()
+    -> raise type_(*content) from from_
+    (Pdb) exceptions 1
+    > <doctest test.test_pdb.test_post_mortem_complex[0]>(3)make_ex_with_stack()
+    -> raise type_(*content) from from_
+    (Pdb) exceptions 2
+    > <doctest test.test_pdb.test_post_mortem_complex[0]>(3)make_ex_with_stack()
+    -> raise type_(*content) from from_
+    (Pdb) exceptions 3
+    > <doctest test.test_pdb.test_post_mortem_complex[5]>(9)main()
+    -> raise ValueError("With Context and With Cause") from ex
+    (Pdb) exit
+    """
+
+
 def test_post_mortem():
     """Test post mortem traceback debugging.
 
@@ -908,6 +1401,34 @@ def test_pdb_skip_modules():
     (Pdb) continue
     """
 
+def test_pdb_invalid_arg():
+    """This tests pdb commands that have invalid arguments
+
+    >>> def test_function():
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pass
+
+    >>> with PdbTestInput([
+    ...     'a = 3',
+    ...     'll 4',
+    ...     'step 1',
+    ...     'continue'
+    ... ]):
+    ...     test_function()
+    > <doctest test.test_pdb.test_pdb_invalid_arg[0]>(3)test_function()
+    -> pass
+    (Pdb) a = 3
+    *** Invalid argument: = 3
+          Usage: a(rgs)
+    (Pdb) ll 4
+    *** Invalid argument: 4
+          Usage: ll | longlist
+    (Pdb) step 1
+    *** Invalid argument: 1
+          Usage: s(tep)
+    (Pdb) continue
+    """
+
 
 # Module for testing skipping of module that makes a callback
 mod = types.ModuleType('module_to_skip')
@@ -1072,7 +1593,7 @@ def test_next_until_return_at_return_event():
     > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(3)test_function()
     -> test_function_2()
     (Pdb) break test_function_2
-    Breakpoint 1 at <doctest test.test_pdb.test_next_until_return_at_return_event[0]>:1
+    Breakpoint 1 at <doctest test.test_pdb.test_next_until_return_at_return_event[0]>:2
     (Pdb) continue
     > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
     -> x = 1
@@ -1494,7 +2015,7 @@ def test_pdb_next_command_in_generator_for_loop():
     > <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[1]>(3)test_function()
     -> for i in test_gen():
     (Pdb) break test_gen
-    Breakpoint 1 at <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[0]>:1
+    Breakpoint 1 at <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[0]>:2
     (Pdb) continue
     > <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[0]>(2)test_gen()
     -> yield 0
@@ -1559,6 +2080,72 @@ def test_pdb_next_command_subiterator():
     (Pdb) continue
     """
 
+def test_pdb_multiline_statement():
+    """Test for multiline statement
+
+    >>> def test_function():
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pass
+
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'def f(x):',
+    ...     '  return x * 2',
+    ...     '',
+    ...     'f(2)',
+    ...     'c'
+    ... ]):
+    ...     test_function()
+    > <doctest test.test_pdb.test_pdb_multiline_statement[0]>(3)test_function()
+    -> pass
+    (Pdb) def f(x):
+    ...     return x * 2
+    ...
+    (Pdb) f(2)
+    4
+    (Pdb) c
+    """
+
+def test_pdb_show_attribute_and_item():
+    """Test for multiline statement
+
+    >>> def test_function():
+    ...     n = lambda x: x
+    ...     c = {"a": 1}
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pass
+
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'c["a"]',
+    ...     'c.get("a")',
+    ...     'n(1)',
+    ...     'j=1',
+    ...     'j+1',
+    ...     'r"a"',
+    ...     'next(iter([1]))',
+    ...     'list((0, 1))',
+    ...     'c'
+    ... ]):
+    ...     test_function()
+    > <doctest test.test_pdb.test_pdb_show_attribute_and_item[0]>(5)test_function()
+    -> pass
+    (Pdb) c["a"]
+    1
+    (Pdb) c.get("a")
+    1
+    (Pdb) n(1)
+    1
+    (Pdb) j=1
+    (Pdb) j+1
+    2
+    (Pdb) r"a"
+    'a'
+    (Pdb) next(iter([1]))
+    1
+    (Pdb) list((0, 1))
+    [0, 1]
+    (Pdb) c
+    """
+
 def test_pdb_issue_20766():
     """Test for reference leaks when the SIGINT handler is set.
 
@@ -1799,6 +2386,49 @@ def test_pdb_issue_gh_101517():
     (Pdb) continue
     """
 
+def test_pdb_issue_gh_108976():
+    """See GH-108976
+    Make sure setting f_trace_opcodes = True won't crash pdb
+    >>> def test_function():
+    ...     import sys
+    ...     sys._getframe().f_trace_opcodes = True
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     a = 1
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'continue'
+    ... ]):
+    ...    test_function()
+    bdb.Bdb.dispatch: unknown debugging event: 'opcode'
+    > <doctest test.test_pdb.test_pdb_issue_gh_108976[0]>(5)test_function()
+    -> a = 1
+    (Pdb) continue
+    """
+
+
+def test_pdb_issue_gh_80731():
+    """See GH-80731
+
+    pdb should correctly print exception info if in an except block.
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS
+    ...     'import sys',
+    ...     'sys.exc_info()',
+    ...     'continue'
+    ... ]):
+    ...     try:
+    ...         raise ValueError('Correct')
+    ...     except ValueError:
+    ...         import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...         pass
+    > <doctest test.test_pdb.test_pdb_issue_gh_80731[0]>(10)<module>()
+    -> pass
+    (Pdb) import sys
+    (Pdb) sys.exc_info()
+    (<class 'ValueError'>, ValueError('Correct'), <traceback object at ...>)
+    (Pdb) continue
+    """
+
+
 def test_pdb_ambiguous_statements():
     """See GH-104301
 
@@ -1822,6 +2452,119 @@ def test_pdb_ambiguous_statements():
     (Pdb) continue
     """
 
+def test_pdb_f_trace_lines():
+    """GH-80675
+
+    pdb should work even if f_trace_lines is set to False on some frames.
+
+    >>> reset_Breakpoint()
+
+    >>> def test_function():
+    ...     import sys
+    ...     frame = sys._getframe()
+    ...     frame.f_trace_lines = False
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     if frame.f_trace_lines != False:
+    ...         print("f_trace_lines is not reset after continue!")
+
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'continue'
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_f_trace_lines[1]>(6)test_function()
+    -> if frame.f_trace_lines != False:
+    (Pdb) continue
+    """
+
+def test_pdb_function_break():
+    """Testing the line number of break on function
+
+    >>> def foo(): pass
+
+    >>> def bar():
+    ...
+    ...     pass
+
+    >>> def boo():
+    ...     # comments
+    ...     global x
+    ...     x = 1
+
+    >>> def gen():
+    ...     yield 42
+
+    >>> def test_function():
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pass
+
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS +NORMALIZE_WHITESPACE
+    ...     'break foo',
+    ...     'break bar',
+    ...     'break boo',
+    ...     'break gen',
+    ...     'continue'
+    ... ]):
+    ...     test_function()
+    > <doctest test.test_pdb.test_pdb_function_break[4]>(3)test_function()
+    -> pass
+    (Pdb) break foo
+    Breakpoint ... at <doctest test.test_pdb.test_pdb_function_break[0]>:1
+    (Pdb) break bar
+    Breakpoint ... at <doctest test.test_pdb.test_pdb_function_break[1]>:3
+    (Pdb) break boo
+    Breakpoint ... at <doctest test.test_pdb.test_pdb_function_break[2]>:4
+    (Pdb) break gen
+    Breakpoint ... at <doctest test.test_pdb.test_pdb_function_break[3]>:2
+    (Pdb) continue
+    """
+
+def test_pdb_issue_gh_65052():
+    """See GH-65052
+
+    args, retval and display should not crash if the object is not displayable
+    >>> class A:
+    ...     def __new__(cls):
+    ...         import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...         return object.__new__(cls)
+    ...     def __init__(self):
+    ...         import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...         self.a = 1
+    ...     def __repr__(self):
+    ...         return self.a
+
+    >>> def test_function():
+    ...     A()
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS +NORMALIZE_WHITESPACE
+    ...     's',
+    ...     'retval',
+    ...     'continue',
+    ...     'args',
+    ...     'display self',
+    ...     'display',
+    ...     'continue',
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_issue_gh_65052[0]>(4)__new__()
+    -> return object.__new__(cls)
+    (Pdb) s
+    --Return--
+    > <doctest test.test_pdb.test_pdb_issue_gh_65052[0]>(4)__new__()-><A instance at ...>
+    -> return object.__new__(cls)
+    (Pdb) retval
+    *** repr(retval) failed: AttributeError: 'A' object has no attribute 'a' ***
+    (Pdb) continue
+    > <doctest test.test_pdb.test_pdb_issue_gh_65052[0]>(7)__init__()
+    -> self.a = 1
+    (Pdb) args
+    self = *** repr(self) failed: AttributeError: 'A' object has no attribute 'a' ***
+    (Pdb) display self
+    display self: *** repr(self) failed: AttributeError: 'A' object has no attribute 'a' ***
+    (Pdb) display
+    Currently displaying:
+    self: *** repr(self) failed: AttributeError: 'A' object has no attribute 'a' ***
+    (Pdb) continue
+    """
+
 
 @support.requires_subprocess()
 class PdbTestCase(unittest.TestCase):
@@ -1830,15 +2573,21 @@ def tearDown(self):
 
     @unittest.skipIf(sys.flags.safe_path,
                      'PYTHONSAFEPATH changes default sys.path')
-    def _run_pdb(self, pdb_args, commands, expected_returncode=0):
+    def _run_pdb(self, pdb_args, commands,
+                 expected_returncode=0,
+                 extra_env=None):
         self.addCleanup(os_helper.rmtree, '__pycache__')
         cmd = [sys.executable, '-m', 'pdb'] + pdb_args
+        if extra_env is not None:
+            env = os.environ | extra_env
+        else:
+            env = os.environ
         with subprocess.Popen(
                 cmd,
                 stdout=subprocess.PIPE,
                 stdin=subprocess.PIPE,
                 stderr=subprocess.STDOUT,
-                env = {**os.environ, 'PYTHONIOENCODING': 'utf-8'}
+                env = {**env, 'PYTHONIOENCODING': 'utf-8'}
         ) as proc:
             stdout, stderr = proc.communicate(str.encode(commands))
         stdout = stdout and bytes.decode(stdout)
@@ -1850,13 +2599,15 @@ def _run_pdb(self, pdb_args, commands, expected_returncode=0):
         )
         return stdout, stderr
 
-    def run_pdb_script(self, script, commands, expected_returncode=0):
+    def run_pdb_script(self, script, commands,
+                       expected_returncode=0,
+                       extra_env=None):
         """Run 'script' lines with pdb and the pdb 'commands'."""
         filename = 'main.py'
         with open(filename, 'w') as f:
             f.write(textwrap.dedent(script))
         self.addCleanup(os_helper.unlink, filename)
-        return self._run_pdb([filename], commands, expected_returncode)
+        return self._run_pdb([filename], commands, expected_returncode, extra_env)
 
     def run_pdb_module(self, script, commands):
         """Runs the script code as part of a module"""
@@ -2063,13 +2814,28 @@ def test_issue16180(self):
         commands = ''
         expected = "SyntaxError:"
         stdout, stderr = self.run_pdb_script(
-            script, commands, expected_returncode=1
+            script, commands
         )
         self.assertIn(expected, stdout,
             '\n\nExpected:\n{}\nGot:\n{}\n'
             'Fail to handle a syntax error in the debuggee.'
             .format(expected, stdout))
 
+    def test_issue84583(self):
+        # A syntax error from ast.literal_eval should not make pdb exit.
+        script = "import ast; ast.literal_eval('')\n"
+        commands = """
+            continue
+            where
+            quit
+        """
+        stdout, stderr = self.run_pdb_script(script, commands)
+        # The code should appear 3 times in the stdout:
+        # 1. when pdb starts
+        # 2. when the exception is raised, in trackback
+        # 3. in where command
+        self.assertEqual(stdout.count("ast.literal_eval('')"), 3)
+
     def test_issue26053(self):
         # run command of pdb prompt echoes the correct args
         script = "print('hello')"
@@ -2230,8 +2996,7 @@ def test_module_without_a_main(self):
         stdout, stderr = self._run_pdb(
             ['-m', module_name], "", expected_returncode=1
         )
-        self.assertIn("ImportError: No module named t_main.__main__",
-                      stdout.splitlines())
+        self.assertIn("ImportError: No module named t_main.__main__;", stdout)
 
     def test_package_without_a_main(self):
         pkg_name = 't_pkg'
@@ -2249,6 +3014,22 @@ def test_package_without_a_main(self):
             "'t_pkg.t_main' is a package and cannot be directly executed",
             stdout)
 
+    def test_nonexistent_module(self):
+        assert not os.path.exists(os_helper.TESTFN)
+        stdout, stderr = self._run_pdb(["-m", os_helper.TESTFN], "", expected_returncode=1)
+        self.assertIn(f"ImportError: No module named {os_helper.TESTFN}", stdout)
+
+    def test_dir_as_script(self):
+        with os_helper.temp_dir() as temp_dir:
+            stdout, stderr = self._run_pdb([temp_dir], "", expected_returncode=1)
+            self.assertIn(f"Error: {temp_dir} is a directory", stdout)
+
+    def test_invalid_cmd_line_options(self):
+        stdout, stderr = self._run_pdb(["-c"], "", expected_returncode=2)
+        self.assertIn(f"pdb: error: argument -c/--command: expected one argument", stdout.split('\n')[1])
+        stdout, stderr = self._run_pdb(["--spam", "-m", "pdb"], "", expected_returncode=2)
+        self.assertIn(f"pdb: error: unrecognized arguments: --spam", stdout.split('\n')[1])
+
     def test_blocks_at_first_code_line(self):
         script = """
                 #This is a comment, on line 2
@@ -2332,7 +3113,7 @@ def test_relative_imports_on_plain_module(self):
 
     def test_errors_in_command(self):
         commands = "\n".join([
-            'print(',
+            'print(]',
             'debug print(',
             'debug doesnotexist',
             'c',
@@ -2341,7 +3122,8 @@ def test_errors_in_command(self):
 
         self.assertEqual(stdout.splitlines()[1:], [
             '-> pass',
-            '(Pdb) *** SyntaxError: \'(\' was never closed',
+            "(Pdb) *** SyntaxError: closing parenthesis ']' does not match opening "
+            "parenthesis '('",
 
             '(Pdb) ENTERING RECURSIVE DEBUGGER',
             '*** SyntaxError: \'(\' was never closed',
@@ -2410,6 +3192,23 @@ def test_issue42384_symlink(self):
 
             self.assertEqual(stdout.split('\n')[2].rstrip('\r'), expected)
 
+    def test_safe_path(self):
+        """ With safe_path set, pdb should not mangle sys.path[0]"""
+
+        script = textwrap.dedent("""
+            import sys
+            import random
+            print('sys.path[0] is', sys.path[0])
+        """)
+        commands = 'c\n'
+
+
+        with os_helper.temp_cwd() as cwd:
+            stdout, _ = self.run_pdb_script(script, commands, extra_env={'PYTHONSAFEPATH': '1'})
+
+            unexpected = f'sys.path[0] is {os.path.realpath(cwd)}'
+            self.assertNotIn(unexpected, stdout)
+
     def test_issue42383(self):
         with os_helper.temp_cwd() as cwd:
             with open('foo.py', 'w') as f:
@@ -2541,6 +3340,55 @@ def test_checkline_is_not_executable(self):
                 self.assertFalse(db.checkline(os_helper.TESTFN, lineno))
 
 
+@support.requires_subprocess()
+class PdbTestReadline(unittest.TestCase):
+    def setUpClass():
+        # Ensure that the readline module is loaded
+        # If this fails, the test is skipped because SkipTest will be raised
+        readline = import_module('readline')
+        if readline.backend == "editline":
+            raise unittest.SkipTest("libedit readline is not supported for pdb")
+
+    def test_basic_completion(self):
+        script = textwrap.dedent("""
+            import pdb; pdb.Pdb().set_trace()
+            # Concatenate strings so that the output doesn't appear in the source
+            print('hello' + '!')
+        """)
+
+        # List everything starting with 'co', there should be multiple matches
+        # then add ntin and complete 'contin' to 'continue'
+        input = b"co\t\tntin\t\n"
+
+        output = run_pty(script, input)
+
+        self.assertIn(b'commands', output)
+        self.assertIn(b'condition', output)
+        self.assertIn(b'continue', output)
+        self.assertIn(b'hello!', output)
+
+    def test_expression_completion(self):
+        script = textwrap.dedent("""
+            value = "speci"
+            import pdb; pdb.Pdb().set_trace()
+        """)
+
+        # Complete: value + 'al'
+        input = b"val\t + 'al'\n"
+        # Complete: p value + 'es'
+        input += b"p val\t + 'es'\n"
+        # Complete: $_frame
+        input += b"$_fra\t\n"
+        # Continue
+        input += b"c\n"
+
+        output = run_pty(script, input)
+
+        self.assertIn(b'special', output)
+        self.assertIn(b'species', output)
+        self.assertIn(b'$_frame', output)
+
+
 def load_tests(loader, tests, pattern):
     from test import test_pdb
     tests.addTest(doctest.DocTestSuite(test_pdb))
diff --git a/Lib/test/test_peepholer.py b/Lib/test/test_peepholer.py
index bf7fc421a9df0a..b825b27060e86b 100644
--- a/Lib/test/test_peepholer.py
+++ b/Lib/test/test_peepholer.py
@@ -4,6 +4,7 @@
 import textwrap
 import unittest
 
+from test import support
 from test.support.bytecode_helper import BytecodeTestCase, CfgOptimizationTestCase
 
 
@@ -522,6 +523,7 @@ def genexpr():
             return (y for x in a for y in [f(x)])
         self.assertEqual(count_instr_recursively(genexpr, 'FOR_ITER'), 1)
 
+    @support.requires_resource('cpu')
     def test_format_combinations(self):
         flags = '-+ #0'
         testcases = [
@@ -686,7 +688,7 @@ def test_load_fast_known_simple(self):
         def f():
             x = 1
             y = x + x
-        self.assertInBytecode(f, 'LOAD_FAST')
+        self.assertInBytecode(f, 'LOAD_FAST_LOAD_FAST')
 
     def test_load_fast_unknown_simple(self):
         def f():
@@ -790,7 +792,10 @@ def f():
                 print(a00, a01, a62, a63)
                 print(a64, a65, a78, a79)
 
-        for i in 0, 1, 62, 63:
+        self.assertInBytecode(f, 'LOAD_FAST_LOAD_FAST', ("a00", "a01"))
+        self.assertNotInBytecode(f, 'LOAD_FAST_CHECK', "a00")
+        self.assertNotInBytecode(f, 'LOAD_FAST_CHECK', "a01")
+        for i in 62, 63:
             # First 64 locals: analyze completely
             self.assertInBytecode(f, 'LOAD_FAST', f"a{i:02}")
             self.assertNotInBytecode(f, 'LOAD_FAST_CHECK', f"a{i:02}")
@@ -971,13 +976,14 @@ def trace(frame, event, arg):
         self.assertNotInBytecode(f, "LOAD_FAST_CHECK")
 
 
-class DirectiCfgOptimizerTests(CfgOptimizationTestCase):
+class DirectCfgOptimizerTests(CfgOptimizationTestCase):
 
     def cfg_optimization_test(self, insts, expected_insts,
-                              consts=None, expected_consts=None):
+                              consts=None, expected_consts=None,
+                              nlocals=0):
         if expected_consts is None:
             expected_consts = consts
-        opt_insts, opt_consts = self.get_optimized(insts, consts)
+        opt_insts, opt_consts = self.get_optimized(insts, consts, nlocals)
         expected_insts = self.normalize_insts(expected_insts)
         self.assertInstructionsMatch(opt_insts, expected_insts)
         self.assertEqual(opt_consts, expected_consts)
@@ -987,6 +993,7 @@ def test_conditional_jump_forward_non_const_condition(self):
             ('LOAD_NAME', 1, 11),
             ('POP_JUMP_IF_TRUE', lbl := self.Label(), 12),
             ('LOAD_CONST', 2, 13),
+            ('RETURN_VALUE', 13),
             lbl,
             ('LOAD_CONST', 3, 14),
             ('RETURN_VALUE', 14),
@@ -994,7 +1001,7 @@ def test_conditional_jump_forward_non_const_condition(self):
         expected_insts = [
             ('LOAD_NAME', 1, 11),
             ('POP_JUMP_IF_TRUE', lbl := self.Label(), 12),
-            ('LOAD_CONST', 1, 13),
+            ('RETURN_CONST', 1, 13),
             lbl,
             ('RETURN_CONST', 2, 14),
         ]
@@ -1058,6 +1065,72 @@ def test_conditional_jump_backward_const_condition(self):
         ]
         self.cfg_optimization_test(insts, expected_insts, consts=list(range(5)))
 
+    def test_no_unsafe_static_swap(self):
+        # We can't change order of two stores to the same location
+        insts = [
+            ('LOAD_CONST', 0, 1),
+            ('LOAD_CONST', 1, 2),
+            ('LOAD_CONST', 2, 3),
+            ('SWAP', 3, 4),
+            ('STORE_FAST', 1, 4),
+            ('STORE_FAST', 1, 4),
+            ('POP_TOP', 0, 4),
+            ('LOAD_CONST', 0, 5),
+            ('RETURN_VALUE', 5)
+        ]
+        expected_insts = [
+            ('LOAD_CONST', 0, 1),
+            ('LOAD_CONST', 1, 2),
+            ('NOP', 0, 3),
+            ('STORE_FAST', 1, 4),
+            ('POP_TOP', 0, 4),
+            ('RETURN_CONST', 0)
+        ]
+        self.cfg_optimization_test(insts, expected_insts, consts=list(range(3)), nlocals=1)
+
+    def test_dead_store_elimination_in_same_lineno(self):
+        insts = [
+            ('LOAD_CONST', 0, 1),
+            ('LOAD_CONST', 1, 2),
+            ('LOAD_CONST', 2, 3),
+            ('STORE_FAST', 1, 4),
+            ('STORE_FAST', 1, 4),
+            ('STORE_FAST', 1, 4),
+            ('LOAD_CONST', 0, 5),
+            ('RETURN_VALUE', 5)
+        ]
+        expected_insts = [
+            ('LOAD_CONST', 0, 1),
+            ('LOAD_CONST', 1, 2),
+            ('NOP', 0, 3),
+            ('POP_TOP', 0, 4),
+            ('STORE_FAST', 1, 4),
+            ('RETURN_CONST', 0, 5)
+        ]
+        self.cfg_optimization_test(insts, expected_insts, consts=list(range(3)), nlocals=1)
+
+    def test_no_dead_store_elimination_in_different_lineno(self):
+        insts = [
+            ('LOAD_CONST', 0, 1),
+            ('LOAD_CONST', 1, 2),
+            ('LOAD_CONST', 2, 3),
+            ('STORE_FAST', 1, 4),
+            ('STORE_FAST', 1, 5),
+            ('STORE_FAST', 1, 6),
+            ('LOAD_CONST', 0, 5),
+            ('RETURN_VALUE', 5)
+        ]
+        expected_insts = [
+            ('LOAD_CONST', 0, 1),
+            ('LOAD_CONST', 1, 2),
+            ('LOAD_CONST', 2, 3),
+            ('STORE_FAST', 1, 4),
+            ('STORE_FAST', 1, 5),
+            ('STORE_FAST', 1, 6),
+            ('RETURN_CONST', 0, 5)
+        ]
+        self.cfg_optimization_test(insts, expected_insts, consts=list(range(3)), nlocals=1)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_peg_generator/__init__.py b/Lib/test/test_peg_generator/__init__.py
index 7c402c3d7c5acf..b32db4426f251d 100644
--- a/Lib/test/test_peg_generator/__init__.py
+++ b/Lib/test/test_peg_generator/__init__.py
@@ -1,16 +1,10 @@
 import os.path
-import unittest
 from test import support
 from test.support import load_package_tests
 
-# TODO: gh-92584: peg_generator uses distutils which was removed in Python 3.12
-raise unittest.SkipTest("distutils has been removed in Python 3.12")
 
-
-if support.check_sanitizer(address=True, memory=True):
-    # bpo-46633: Skip the test because it is too slow when Python is built
-    # with ASAN/MSAN: between 5 and 20 minutes on GitHub Actions.
-    raise unittest.SkipTest("test too slow on ASAN/MSAN build")
+# Creating a virtual environment and building C extensions is slow
+support.requires('cpu')
 
 
 # Load all tests in package
diff --git a/Lib/test/test_peg_generator/test_c_parser.py b/Lib/test/test_peg_generator/test_c_parser.py
index d34ffef0dbc5ec..9e273e99e387a4 100644
--- a/Lib/test/test_peg_generator/test_c_parser.py
+++ b/Lib/test/test_peg_generator/test_c_parser.py
@@ -1,3 +1,5 @@
+import contextlib
+import subprocess
 import sysconfig
 import textwrap
 import unittest
@@ -8,7 +10,7 @@
 
 from test import test_tools
 from test import support
-from test.support import os_helper
+from test.support import os_helper, import_helper
 from test.support.script_helper import assert_python_ok
 
 _py_cflags_nodist = sysconfig.get_config_var("PY_CFLAGS_NODIST")
@@ -72,8 +74,18 @@ def test_parse(self):
 @support.requires_subprocess()
 class TestCParser(unittest.TestCase):
 
+    _has_run = False
+
     @classmethod
     def setUpClass(cls):
+        if cls._has_run:
+            # Since gh-104798 (Use setuptools in peg-generator and reenable
+            # tests), this test case has been producing ref leaks. Initial
+            # debugging points to bug(s) in setuptools and/or importlib.
+            # See gh-105063 for more info.
+            raise unittest.SkipTest("gh-105063: can not rerun because of ref. leaks")
+        cls._has_run = True
+
         # When running under regtest, a separate tempdir is used
         # as the current directory and watched for left-overs.
         # Reusing that as the base for temporary directories
@@ -88,6 +100,16 @@ def setUpClass(cls):
         cls.library_dir = tempfile.mkdtemp(dir=cls.tmp_base)
         cls.addClassCleanup(shutil.rmtree, cls.library_dir)
 
+        with contextlib.ExitStack() as stack:
+            python_exe = stack.enter_context(support.setup_venv_with_pip_setuptools_wheel("venv"))
+            sitepackages = subprocess.check_output(
+                [python_exe, "-c", "import sysconfig; print(sysconfig.get_path('platlib'))"],
+                text=True,
+            ).strip()
+            stack.enter_context(import_helper.DirsOnSysPath(sitepackages))
+            cls.addClassCleanup(stack.pop_all().close)
+
+    @support.requires_venv_with_pip()
     def setUp(self):
         self._backup_config_vars = dict(sysconfig._CONFIG_VARS)
         cmd = support.missing_compiler_executable()
@@ -382,7 +404,7 @@ def test_ternary_operator(self) -> None:
             a='[' b=NAME c=for_if_clauses d=']' { _PyAST_ListComp(b, c, EXTRA) }
         )
         for_if_clauses[asdl_comprehension_seq*]: (
-            a[asdl_comprehension_seq*]=(y=[ASYNC] 'for' a=NAME 'in' b=NAME c[asdl_expr_seq*]=('if' z=NAME { z })*
+            a[asdl_comprehension_seq*]=(y=['async'] 'for' a=NAME 'in' b=NAME c[asdl_expr_seq*]=('if' z=NAME { z })*
                 { _PyAST_comprehension(_PyAST_Name(((expr_ty) a)->v.Name.id, Store, EXTRA), b, c, (y == NULL) ? 0 : 1, p->arena) })+ { a }
         )
         """
diff --git a/Lib/test/test_peg_generator/test_pegen.py b/Lib/test/test_peg_generator/test_pegen.py
index 30e992ed213c67..86db767b99a228 100644
--- a/Lib/test/test_peg_generator/test_pegen.py
+++ b/Lib/test/test_peg_generator/test_pegen.py
@@ -42,6 +42,15 @@ def test_parse_grammar(self) -> None:
         )
         self.assertEqual(repr(rules["term"]), expected_repr)
 
+    def test_repeated_rules(self) -> None:
+        grammar_source = """
+        start: the_rule NEWLINE
+        the_rule: 'b' NEWLINE
+        the_rule: 'a' NEWLINE
+        """
+        with self.assertRaisesRegex(GrammarError, "Repeated rule 'the_rule'"):
+            parse_string(grammar_source, GrammarParser)
+
     def test_long_rule_str(self) -> None:
         grammar_source = """
         start: zero | one | one zero | one one | one zero zero | one zero one | one one zero | one one one
@@ -650,6 +659,7 @@ def test_lookahead(self) -> None:
         """
         parser_class = make_parser(grammar)
         node = parse_string("foo = 12 + 12 .", parser_class)
+        self.maxDiff = None
         self.assertEqual(
             node,
             [
@@ -794,7 +804,7 @@ def test_soft_keyword(self) -> None:
         start:
             | "number" n=NUMBER { eval(n.string) }
             | "string" n=STRING { n.string }
-            | SOFT_KEYWORD l=NAME n=(NUMBER | NAME | STRING) { f"{l.string} = {n.string}"}
+            | SOFT_KEYWORD l=NAME n=(NUMBER | NAME | STRING) { l.string + " = " + n.string }
         """
         parser_class = make_parser(grammar)
         self.assertEqual(parse_string("number 1", parser_class), 1)
diff --git a/Lib/test/test_pep646_syntax.py b/Lib/test/test_pep646_syntax.py
index 3ffa82dc55fa23..aac089b190bc11 100644
--- a/Lib/test/test_pep646_syntax.py
+++ b/Lib/test/test_pep646_syntax.py
@@ -1,3 +1,6 @@
+import doctest
+import unittest
+
 doctests = """
 
 Setup
@@ -317,10 +320,10 @@
 
 __test__ = {'doctests' : doctests}
 
-def test_main(verbose=False):
-    from test import support
-    from test import test_pep646_syntax
-    support.run_doctest(test_pep646_syntax, verbose)
+def load_tests(loader, tests, pattern):
+    tests.addTest(doctest.DocTestSuite())
+    return tests
+
 
 if __name__ == "__main__":
-    test_main(verbose=True)
+    unittest.main()
diff --git a/Lib/test/test_perf_profiler.py b/Lib/test/test_perf_profiler.py
index 5418f9f35485f8..040be63da11447 100644
--- a/Lib/test/test_perf_profiler.py
+++ b/Lib/test/test_perf_profiler.py
@@ -17,6 +17,11 @@
 if not support.has_subprocess_support:
     raise unittest.SkipTest("test module requires subprocess")
 
+if support.check_sanitizer(address=True, memory=True, ub=True):
+    # gh-109580: Skip the test because it does crash randomly if Python is
+    # built with ASAN.
+    raise unittest.SkipTest("test crash randomly on ASAN/MSAN/UBSAN build")
+
 
 def supports_trampoline_profiling():
     perf_trampoline = sysconfig.get_config_var("PY_HAVE_PERF_TRAMPOLINE")
@@ -287,7 +292,6 @@ def run_perf(cwd, *args, **env_vars):
 
 @unittest.skipUnless(perf_command_works(), "perf command doesn't work")
 @unittest.skipUnless(is_unwinding_reliable(), "Unwinding is unreliable")
-@support.skip_if_sanitizer(address=True, memory=True, ub=True)
 class TestPerfProfiler(unittest.TestCase):
     def setUp(self):
         super().setUp()
@@ -349,6 +353,82 @@ def baz(n):
             self.assertNotIn(f"py::bar:{script}", stdout)
             self.assertNotIn(f"py::baz:{script}", stdout)
 
+    def test_pre_fork_compile(self):
+        code = """if 1:
+                import sys
+                import os
+                import sysconfig
+                from _testinternalcapi import (
+                    compile_perf_trampoline_entry,
+                    perf_trampoline_set_persist_after_fork,
+                )
+
+                def foo_fork():
+                    pass
+
+                def bar_fork():
+                    foo_fork()
+
+                def foo():
+                    pass
+
+                def bar():
+                    foo()
+
+                def compile_trampolines_for_all_functions():
+                    perf_trampoline_set_persist_after_fork(1)
+                    for _, obj in globals().items():
+                        if callable(obj) and hasattr(obj, '__code__'):
+                            compile_perf_trampoline_entry(obj.__code__)
+
+                if __name__ == "__main__":
+                    compile_trampolines_for_all_functions()
+                    pid = os.fork()
+                    if pid == 0:
+                        print(os.getpid())
+                        bar_fork()
+                    else:
+                        bar()
+                """
+
+        with temp_dir() as script_dir:
+            script = make_script(script_dir, "perftest", code)
+            with subprocess.Popen(
+                [sys.executable, "-Xperf", script],
+                universal_newlines=True,
+                stderr=subprocess.PIPE,
+                stdout=subprocess.PIPE,
+            ) as process:
+                stdout, stderr = process.communicate()
+
+        self.assertEqual(process.returncode, 0)
+        self.assertNotIn("Error:", stderr)
+        child_pid = int(stdout.strip())
+        perf_file = pathlib.Path(f"/tmp/perf-{process.pid}.map")
+        perf_child_file = pathlib.Path(f"/tmp/perf-{child_pid}.map")
+        self.assertTrue(perf_file.exists())
+        self.assertTrue(perf_child_file.exists())
+
+        perf_file_contents = perf_file.read_text()
+        self.assertIn(f"py::foo:{script}", perf_file_contents)
+        self.assertIn(f"py::bar:{script}", perf_file_contents)
+        self.assertIn(f"py::foo_fork:{script}", perf_file_contents)
+        self.assertIn(f"py::bar_fork:{script}", perf_file_contents)
+
+        child_perf_file_contents = perf_child_file.read_text()
+        self.assertIn(f"py::foo_fork:{script}", child_perf_file_contents)
+        self.assertIn(f"py::bar_fork:{script}", child_perf_file_contents)
+
+        # Pre-compiled perf-map entries of a forked process must be
+        # identical in both the parent and child perf-map files.
+        perf_file_lines = perf_file_contents.split("\n")
+        for line in perf_file_lines:
+            if (
+                f"py::foo_fork:{script}" in line
+                or f"py::bar_fork:{script}" in line
+            ):
+                self.assertIn(line, child_perf_file_contents)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_perfmaps.py b/Lib/test/test_perfmaps.py
new file mode 100644
index 00000000000000..a17adb89f55360
--- /dev/null
+++ b/Lib/test/test_perfmaps.py
@@ -0,0 +1,19 @@
+import os
+import sys
+import unittest
+
+from _testinternalcapi import perf_map_state_teardown, write_perf_map_entry
+
+if sys.platform != 'linux':
+    raise unittest.SkipTest('Linux only')
+
+
+class TestPerfMapWriting(unittest.TestCase):
+    def test_write_perf_map_entry(self):
+        self.assertEqual(write_perf_map_entry(0x1234, 5678, "entry1"), 0)
+        self.assertEqual(write_perf_map_entry(0x2345, 6789, "entry2"), 0)
+        with open(f"/tmp/perf-{os.getpid()}.map") as f:
+            perf_file_contents = f.read()
+            self.assertIn("1234 162e entry1", perf_file_contents)
+            self.assertIn("2345 1a85 entry2", perf_file_contents)
+        perf_map_state_teardown()
diff --git a/Lib/test/test_pipes.py b/Lib/test/test_pipes.py
deleted file mode 100644
index 09e21153ec858a..00000000000000
--- a/Lib/test/test_pipes.py
+++ /dev/null
@@ -1,210 +0,0 @@
-import os
-import string
-import unittest
-import shutil
-from test.support import reap_children, unix_shell
-from test.support.os_helper import TESTFN, unlink
-from test.support.warnings_helper import import_deprecated
-
-pipes = import_deprecated("pipes")
-
-
-if os.name != 'posix':
-    raise unittest.SkipTest('pipes module only works on posix')
-
-if not (unix_shell and os.path.exists(unix_shell)):
-    raise unittest.SkipTest('pipes module requires a shell')
-
-TESTFN2 = TESTFN + "2"
-
-# tr a-z A-Z is not portable, so make the ranges explicit
-s_command = 'tr %s %s' % (string.ascii_lowercase, string.ascii_uppercase)
-
-class SimplePipeTests(unittest.TestCase):
-    def tearDown(self):
-        for f in (TESTFN, TESTFN2):
-            unlink(f)
-
-    def testSimplePipe1(self):
-        if shutil.which('tr') is None:
-            self.skipTest('tr is not available')
-        t = pipes.Template()
-        t.append(s_command, pipes.STDIN_STDOUT)
-        with t.open(TESTFN, 'w') as f:
-            f.write('hello world #1')
-        with open(TESTFN) as f:
-            self.assertEqual(f.read(), 'HELLO WORLD #1')
-
-    def testSimplePipe2(self):
-        if shutil.which('tr') is None:
-            self.skipTest('tr is not available')
-        with open(TESTFN, 'w') as f:
-            f.write('hello world #2')
-        t = pipes.Template()
-        t.append(s_command + ' < $IN > $OUT', pipes.FILEIN_FILEOUT)
-        t.copy(TESTFN, TESTFN2)
-        with open(TESTFN2) as f:
-            self.assertEqual(f.read(), 'HELLO WORLD #2')
-
-    def testSimplePipe3(self):
-        if shutil.which('tr') is None:
-            self.skipTest('tr is not available')
-        with open(TESTFN, 'w') as f:
-            f.write('hello world #2')
-        t = pipes.Template()
-        t.append(s_command + ' < $IN', pipes.FILEIN_STDOUT)
-        f = t.open(TESTFN, 'r')
-        try:
-            self.assertEqual(f.read(), 'HELLO WORLD #2')
-        finally:
-            f.close()
-
-    def testEmptyPipeline1(self):
-        # copy through empty pipe
-        d = 'empty pipeline test COPY'
-        with open(TESTFN, 'w') as f:
-            f.write(d)
-        with open(TESTFN2, 'w') as f:
-            f.write('')
-        t=pipes.Template()
-        t.copy(TESTFN, TESTFN2)
-        with open(TESTFN2) as f:
-            self.assertEqual(f.read(), d)
-
-    def testEmptyPipeline2(self):
-        # read through empty pipe
-        d = 'empty pipeline test READ'
-        with open(TESTFN, 'w') as f:
-            f.write(d)
-        t=pipes.Template()
-        f = t.open(TESTFN, 'r')
-        try:
-            self.assertEqual(f.read(), d)
-        finally:
-            f.close()
-
-    def testEmptyPipeline3(self):
-        # write through empty pipe
-        d = 'empty pipeline test WRITE'
-        t = pipes.Template()
-        with t.open(TESTFN, 'w') as f:
-            f.write(d)
-        with open(TESTFN) as f:
-            self.assertEqual(f.read(), d)
-
-    def testRepr(self):
-        t = pipes.Template()
-        self.assertEqual(repr(t), "<Template instance, steps=[]>")
-        t.append('tr a-z A-Z', pipes.STDIN_STDOUT)
-        self.assertEqual(repr(t),
-                    "<Template instance, steps=[('tr a-z A-Z', '--')]>")
-
-    def testSetDebug(self):
-        t = pipes.Template()
-        t.debug(False)
-        self.assertEqual(t.debugging, False)
-        t.debug(True)
-        self.assertEqual(t.debugging, True)
-
-    def testReadOpenSink(self):
-        # check calling open('r') on a pipe ending with
-        # a sink raises ValueError
-        t = pipes.Template()
-        t.append('boguscmd', pipes.SINK)
-        self.assertRaises(ValueError, t.open, 'bogusfile', 'r')
-
-    def testWriteOpenSource(self):
-        # check calling open('w') on a pipe ending with
-        # a source raises ValueError
-        t = pipes.Template()
-        t.prepend('boguscmd', pipes.SOURCE)
-        self.assertRaises(ValueError, t.open, 'bogusfile', 'w')
-
-    def testBadAppendOptions(self):
-        t = pipes.Template()
-
-        # try a non-string command
-        self.assertRaises(TypeError, t.append, 7, pipes.STDIN_STDOUT)
-
-        # try a type that isn't recognized
-        self.assertRaises(ValueError, t.append, 'boguscmd', 'xx')
-
-        # shouldn't be able to append a source
-        self.assertRaises(ValueError, t.append, 'boguscmd', pipes.SOURCE)
-
-        # check appending two sinks
-        t = pipes.Template()
-        t.append('boguscmd', pipes.SINK)
-        self.assertRaises(ValueError, t.append, 'boguscmd', pipes.SINK)
-
-        # command needing file input but with no $IN
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.append, 'boguscmd $OUT',
-                           pipes.FILEIN_FILEOUT)
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.append, 'boguscmd',
-                           pipes.FILEIN_STDOUT)
-
-        # command needing file output but with no $OUT
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.append, 'boguscmd $IN',
-                           pipes.FILEIN_FILEOUT)
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.append, 'boguscmd',
-                           pipes.STDIN_FILEOUT)
-
-
-    def testBadPrependOptions(self):
-        t = pipes.Template()
-
-        # try a non-string command
-        self.assertRaises(TypeError, t.prepend, 7, pipes.STDIN_STDOUT)
-
-        # try a type that isn't recognized
-        self.assertRaises(ValueError, t.prepend, 'tr a-z A-Z', 'xx')
-
-        # shouldn't be able to prepend a sink
-        self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.SINK)
-
-        # check prepending two sources
-        t = pipes.Template()
-        t.prepend('boguscmd', pipes.SOURCE)
-        self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.SOURCE)
-
-        # command needing file input but with no $IN
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.prepend, 'boguscmd $OUT',
-                           pipes.FILEIN_FILEOUT)
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.prepend, 'boguscmd',
-                           pipes.FILEIN_STDOUT)
-
-        # command needing file output but with no $OUT
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.prepend, 'boguscmd $IN',
-                           pipes.FILEIN_FILEOUT)
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.prepend, 'boguscmd',
-                           pipes.STDIN_FILEOUT)
-
-    def testBadOpenMode(self):
-        t = pipes.Template()
-        self.assertRaises(ValueError, t.open, 'bogusfile', 'x')
-
-    def testClone(self):
-        t = pipes.Template()
-        t.append('tr a-z A-Z', pipes.STDIN_STDOUT)
-
-        u = t.clone()
-        self.assertNotEqual(id(t), id(u))
-        self.assertEqual(t.steps, u.steps)
-        self.assertNotEqual(id(t.steps), id(u.steps))
-        self.assertEqual(t.debugging, u.debugging)
-
-
-def tearDownModule():
-    reap_children()
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_poll.py b/Lib/test/test_poll.py
index 02165a0244ddf4..1847ae95db9292 100644
--- a/Lib/test/test_poll.py
+++ b/Lib/test/test_poll.py
@@ -8,7 +8,7 @@
 import time
 import unittest
 from test.support import (
-    cpython_only, requires_subprocess, requires_working_socket
+    cpython_only, requires_subprocess, requires_working_socket, requires_resource
 )
 from test.support import threading_helper
 from test.support.os_helper import TESTFN
@@ -124,6 +124,7 @@ def fileno(self):
     # select(), modified to use poll() instead.
 
     @requires_subprocess()
+    @requires_resource('walltime')
     def test_poll2(self):
         cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do echo testing...; sleep 1; done'
         proc = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
diff --git a/Lib/test/test_poplib.py b/Lib/test/test_poplib.py
index fa41ba0b6e4637..869f9431b928bb 100644
--- a/Lib/test/test_poplib.py
+++ b/Lib/test/test_poplib.py
@@ -29,8 +29,8 @@
     import ssl
 
     SUPPORTS_SSL = True
-    CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "keycert3.pem")
-    CAFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "pycacert.pem")
+    CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "certdata", "keycert3.pem")
+    CAFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "certdata", "pycacert.pem")
 
 requires_ssl = skipUnless(SUPPORTS_SSL, 'SSL not supported')
 
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 444f8abe4607b7..1722c84727bbd8 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -6,9 +6,6 @@
 from test.support import warnings_helper
 from test.support.script_helper import assert_python_ok
 
-# Skip these tests if there is no posix module.
-posix = import_helper.import_module('posix')
-
 import errno
 import sys
 import signal
@@ -22,6 +19,11 @@
 import textwrap
 from contextlib import contextmanager
 
+try:
+    import posix
+except ImportError:
+    import nt as posix
+
 try:
     import pwd
 except ImportError:
@@ -1012,16 +1014,17 @@ def test_environ(self):
     def test_putenv(self):
         with self.assertRaises(ValueError):
             os.putenv('FRUIT\0VEGETABLE', 'cabbage')
-        with self.assertRaises(ValueError):
-            os.putenv(b'FRUIT\0VEGETABLE', b'cabbage')
         with self.assertRaises(ValueError):
             os.putenv('FRUIT', 'orange\0VEGETABLE=cabbage')
-        with self.assertRaises(ValueError):
-            os.putenv(b'FRUIT', b'orange\0VEGETABLE=cabbage')
         with self.assertRaises(ValueError):
             os.putenv('FRUIT=ORANGE', 'lemon')
-        with self.assertRaises(ValueError):
-            os.putenv(b'FRUIT=ORANGE', b'lemon')
+        if os.name == 'posix':
+            with self.assertRaises(ValueError):
+                os.putenv(b'FRUIT\0VEGETABLE', b'cabbage')
+            with self.assertRaises(ValueError):
+                os.putenv(b'FRUIT', b'orange\0VEGETABLE=cabbage')
+            with self.assertRaises(ValueError):
+                os.putenv(b'FRUIT=ORANGE', b'lemon')
 
     @unittest.skipUnless(hasattr(posix, 'getcwd'), 'test needs posix.getcwd()')
     def test_getcwd_long_pathnames(self):
@@ -1205,6 +1208,7 @@ def test_sched_getaffinity(self):
     @requires_sched_affinity
     def test_sched_setaffinity(self):
         mask = posix.sched_getaffinity(0)
+        self.addCleanup(posix.sched_setaffinity, 0, list(mask))
         if len(mask) > 1:
             # Empty masks are forbidden
             mask.pop()
@@ -1219,6 +1223,7 @@ def test_sched_setaffinity(self):
             self.assertRaises(OSError, posix.sched_setaffinity, -1, mask)
 
     @unittest.skipIf(support.is_wasi, "No dynamic linking on WASI")
+    @unittest.skipUnless(os.name == 'posix', "POSIX-only test")
     def test_rtld_constants(self):
         # check presence of major RTLD_* constants
         posix.RTLD_LAZY
diff --git a/Lib/test/test_posixpath.py b/Lib/test/test_posixpath.py
index 9be4640f970aef..86ce1b1d41ba61 100644
--- a/Lib/test/test_posixpath.py
+++ b/Lib/test/test_posixpath.py
@@ -47,18 +47,26 @@ def tearDown(self):
             safe_rmdir(os_helper.TESTFN + suffix)
 
     def test_join(self):
-        self.assertEqual(posixpath.join("/foo", "bar", "/bar", "baz"),
-                         "/bar/baz")
-        self.assertEqual(posixpath.join("/foo", "bar", "baz"), "/foo/bar/baz")
-        self.assertEqual(posixpath.join("/foo/", "bar/", "baz/"),
-                         "/foo/bar/baz/")
-
-        self.assertEqual(posixpath.join(b"/foo", b"bar", b"/bar", b"baz"),
-                         b"/bar/baz")
-        self.assertEqual(posixpath.join(b"/foo", b"bar", b"baz"),
-                         b"/foo/bar/baz")
-        self.assertEqual(posixpath.join(b"/foo/", b"bar/", b"baz/"),
-                         b"/foo/bar/baz/")
+        fn = posixpath.join
+        self.assertEqual(fn("/foo", "bar", "/bar", "baz"), "/bar/baz")
+        self.assertEqual(fn("/foo", "bar", "baz"),         "/foo/bar/baz")
+        self.assertEqual(fn("/foo/", "bar/", "baz/"),      "/foo/bar/baz/")
+
+        self.assertEqual(fn(b"/foo", b"bar", b"/bar", b"baz"), b"/bar/baz")
+        self.assertEqual(fn(b"/foo", b"bar", b"baz"),          b"/foo/bar/baz")
+        self.assertEqual(fn(b"/foo/", b"bar/", b"baz/"),       b"/foo/bar/baz/")
+
+        self.assertEqual(fn("a", "b"),         "a/b")
+        self.assertEqual(fn("a", "b/"),        "a/b/")
+        self.assertEqual(fn("a/", "b"),        "a/b")
+        self.assertEqual(fn("a/", "b/"),       "a/b/")
+        self.assertEqual(fn("a", "b/c", "d"),  "a/b/c/d")
+        self.assertEqual(fn("a", "b//c", "d"), "a/b//c/d")
+        self.assertEqual(fn("a", "b/c/", "d"), "a/b/c/d")
+        self.assertEqual(fn("/a", "b"),        "/a/b")
+        self.assertEqual(fn("/a/", "b"),       "/a/b")
+        self.assertEqual(fn("a", "/b", "c"),   "/b/c")
+        self.assertEqual(fn("a", "/b", "/c"),  "/c")
 
     def test_split(self):
         self.assertEqual(posixpath.split("/foo/bar"), ("/foo", "bar"))
diff --git a/Lib/test/test_pprint.py b/Lib/test/test_pprint.py
index 6ea7e7db2ce113..4e6fed1ab969ac 100644
--- a/Lib/test/test_pprint.py
+++ b/Lib/test/test_pprint.py
@@ -7,8 +7,8 @@
 import itertools
 import pprint
 import random
+import re
 import test.support
-import test.test_set
 import types
 import unittest
 
@@ -535,7 +535,10 @@ def test_dataclass_with_repr(self):
     def test_dataclass_no_repr(self):
         dc = dataclass3()
         formatted = pprint.pformat(dc, width=10)
-        self.assertRegex(formatted, r"<test.test_pprint.dataclass3 object at \w+>")
+        self.assertRegex(
+            formatted,
+            fr"<{re.escape(__name__)}.dataclass3 object at \w+>",
+        )
 
     def test_recursive_dataclass(self):
         dc = dataclass4(None)
@@ -619,9 +622,6 @@ def test_set_reprs(self):
         self.assertEqual(pprint.pformat(frozenset3(range(7)), width=20),
                          'frozenset3({0, 1, 2, 3, 4, 5, 6})')
 
-    @unittest.expectedFailure
-    #See http://bugs.python.org/issue13907
-    @test.support.cpython_only
     def test_set_of_sets_reprs(self):
         # This test creates a complex arrangement of frozensets and
         # compares the pretty-printed repr against a string hard-coded in
@@ -632,204 +632,106 @@ def test_set_of_sets_reprs(self):
         # partial ordering (subset relationships), the output of the
         # list.sort() method is undefined for lists of sets."
         #
-        # In a nutshell, the test assumes frozenset({0}) will always
-        # sort before frozenset({1}), but:
-        #
         # >>> frozenset({0}) < frozenset({1})
         # False
         # >>> frozenset({1}) < frozenset({0})
         # False
         #
-        # Consequently, this test is fragile and
-        # implementation-dependent.  Small changes to Python's sort
-        # algorithm cause the test to fail when it should pass.
-        # XXX Or changes to the dictionary implementation...
-
-        cube_repr_tgt = """\
-{frozenset(): frozenset({frozenset({2}), frozenset({0}), frozenset({1})}),
- frozenset({0}): frozenset({frozenset(),
-                            frozenset({0, 2}),
-                            frozenset({0, 1})}),
- frozenset({1}): frozenset({frozenset(),
-                            frozenset({1, 2}),
-                            frozenset({0, 1})}),
- frozenset({2}): frozenset({frozenset(),
-                            frozenset({1, 2}),
-                            frozenset({0, 2})}),
- frozenset({1, 2}): frozenset({frozenset({2}),
-                               frozenset({1}),
-                               frozenset({0, 1, 2})}),
- frozenset({0, 2}): frozenset({frozenset({2}),
-                               frozenset({0}),
-                               frozenset({0, 1, 2})}),
- frozenset({0, 1}): frozenset({frozenset({0}),
-                               frozenset({1}),
-                               frozenset({0, 1, 2})}),
- frozenset({0, 1, 2}): frozenset({frozenset({1, 2}),
-                                  frozenset({0, 2}),
-                                  frozenset({0, 1})})}"""
-        cube = test.test_set.cube(3)
-        self.assertEqual(pprint.pformat(cube), cube_repr_tgt)
-        cubo_repr_tgt = """\
-{frozenset({frozenset({0, 2}), frozenset({0})}): frozenset({frozenset({frozenset({0,
-                                                                                  2}),
-                                                                       frozenset({0,
-                                                                                  1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({0}),
-                                                                       frozenset({0,
-                                                                                  1})}),
-                                                            frozenset({frozenset(),
-                                                                       frozenset({0})}),
-                                                            frozenset({frozenset({2}),
-                                                                       frozenset({0,
-                                                                                  2})})}),
- frozenset({frozenset({0, 1}), frozenset({1})}): frozenset({frozenset({frozenset({0,
-                                                                                  1}),
-                                                                       frozenset({0,
-                                                                                  1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({0}),
-                                                                       frozenset({0,
-                                                                                  1})}),
-                                                            frozenset({frozenset({1}),
-                                                                       frozenset({1,
-                                                                                  2})}),
-                                                            frozenset({frozenset(),
-                                                                       frozenset({1})})}),
- frozenset({frozenset({1, 2}), frozenset({1})}): frozenset({frozenset({frozenset({1,
-                                                                                  2}),
-                                                                       frozenset({0,
-                                                                                  1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({2}),
-                                                                       frozenset({1,
-                                                                                  2})}),
-                                                            frozenset({frozenset(),
-                                                                       frozenset({1})}),
-                                                            frozenset({frozenset({1}),
-                                                                       frozenset({0,
-                                                                                  1})})}),
- frozenset({frozenset({1, 2}), frozenset({2})}): frozenset({frozenset({frozenset({1,
-                                                                                  2}),
-                                                                       frozenset({0,
-                                                                                  1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({1}),
-                                                                       frozenset({1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({2}),
-                                                                       frozenset({0,
-                                                                                  2})}),
-                                                            frozenset({frozenset(),
-                                                                       frozenset({2})})}),
- frozenset({frozenset(), frozenset({0})}): frozenset({frozenset({frozenset({0}),
-                                                                 frozenset({0,
-                                                                            1})}),
-                                                      frozenset({frozenset({0}),
-                                                                 frozenset({0,
-                                                                            2})}),
-                                                      frozenset({frozenset(),
-                                                                 frozenset({1})}),
-                                                      frozenset({frozenset(),
-                                                                 frozenset({2})})}),
- frozenset({frozenset(), frozenset({1})}): frozenset({frozenset({frozenset(),
-                                                                 frozenset({0})}),
-                                                      frozenset({frozenset({1}),
-                                                                 frozenset({1,
-                                                                            2})}),
-                                                      frozenset({frozenset(),
-                                                                 frozenset({2})}),
-                                                      frozenset({frozenset({1}),
-                                                                 frozenset({0,
-                                                                            1})})}),
- frozenset({frozenset({2}), frozenset()}): frozenset({frozenset({frozenset({2}),
-                                                                 frozenset({1,
-                                                                            2})}),
-                                                      frozenset({frozenset(),
-                                                                 frozenset({0})}),
-                                                      frozenset({frozenset(),
-                                                                 frozenset({1})}),
-                                                      frozenset({frozenset({2}),
-                                                                 frozenset({0,
-                                                                            2})})}),
- frozenset({frozenset({0, 1, 2}), frozenset({0, 1})}): frozenset({frozenset({frozenset({1,
-                                                                                        2}),
-                                                                             frozenset({0,
-                                                                                        1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({0,
-                                                                                        2}),
-                                                                             frozenset({0,
-                                                                                        1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({0}),
-                                                                             frozenset({0,
-                                                                                        1})}),
-                                                                  frozenset({frozenset({1}),
-                                                                             frozenset({0,
-                                                                                        1})})}),
- frozenset({frozenset({0}), frozenset({0, 1})}): frozenset({frozenset({frozenset(),
-                                                                       frozenset({0})}),
-                                                            frozenset({frozenset({0,
-                                                                                  1}),
-                                                                       frozenset({0,
-                                                                                  1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({0}),
-                                                                       frozenset({0,
-                                                                                  2})}),
-                                                            frozenset({frozenset({1}),
-                                                                       frozenset({0,
-                                                                                  1})})}),
- frozenset({frozenset({2}), frozenset({0, 2})}): frozenset({frozenset({frozenset({0,
-                                                                                  2}),
-                                                                       frozenset({0,
-                                                                                  1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({2}),
-                                                                       frozenset({1,
-                                                                                  2})}),
-                                                            frozenset({frozenset({0}),
-                                                                       frozenset({0,
-                                                                                  2})}),
-                                                            frozenset({frozenset(),
-                                                                       frozenset({2})})}),
- frozenset({frozenset({0, 1, 2}), frozenset({0, 2})}): frozenset({frozenset({frozenset({1,
-                                                                                        2}),
-                                                                             frozenset({0,
-                                                                                        1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({0,
-                                                                                        1}),
-                                                                             frozenset({0,
-                                                                                        1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({0}),
-                                                                             frozenset({0,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({2}),
-                                                                             frozenset({0,
-                                                                                        2})})}),
- frozenset({frozenset({1, 2}), frozenset({0, 1, 2})}): frozenset({frozenset({frozenset({0,
-                                                                                        2}),
-                                                                             frozenset({0,
-                                                                                        1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({0,
-                                                                                        1}),
-                                                                             frozenset({0,
-                                                                                        1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({2}),
-                                                                             frozenset({1,
-                                                                                        2})}),
-                                                                  frozenset({frozenset({1}),
-                                                                             frozenset({1,
-                                                                                        2})})})}"""
-
-        cubo = test.test_set.linegraph(cube)
-        self.assertEqual(pprint.pformat(cubo), cubo_repr_tgt)
+        # In this test we list all possible invariants of the result
+        # for unordered frozensets.
+        #
+        # This test has a long history, see:
+        # - https://github.com/python/cpython/commit/969fe57baa0eb80332990f9cda936a33e13fabef
+        # - https://github.com/python/cpython/issues/58115
+        # - https://github.com/python/cpython/issues/111147
+
+        import textwrap
+
+        # Single-line, always ordered:
+        fs0 = frozenset()
+        fs1 = frozenset(('abc', 'xyz'))
+        data = frozenset((fs0, fs1))
+        self.assertEqual(pprint.pformat(data),
+                         'frozenset({%r, %r})' % (fs0, fs1))
+        self.assertEqual(pprint.pformat(data), repr(data))
+
+        fs2 = frozenset(('one', 'two'))
+        data = {fs2: frozenset((fs0, fs1))}
+        self.assertEqual(pprint.pformat(data),
+                         "{%r: frozenset({%r, %r})}" % (fs2, fs0, fs1))
+        self.assertEqual(pprint.pformat(data), repr(data))
+
+        # Single-line, unordered:
+        fs1 = frozenset(("xyz", "qwerty"))
+        fs2 = frozenset(("abcd", "spam"))
+        fs = frozenset((fs1, fs2))
+        self.assertEqual(pprint.pformat(fs), repr(fs))
+
+        # Multiline, unordered:
+        def check(res, invariants):
+            self.assertIn(res, [textwrap.dedent(i).strip() for i in invariants])
+
+        # Inner-most frozensets are singleline, result is multiline, unordered:
+        fs1 = frozenset(('regular string', 'other string'))
+        fs2 = frozenset(('third string', 'one more string'))
+        check(
+            pprint.pformat(frozenset((fs1, fs2))),
+            [
+                """
+                frozenset({%r,
+                           %r})
+                """ % (fs1, fs2),
+                """
+                frozenset({%r,
+                           %r})
+                """ % (fs2, fs1),
+            ],
+        )
+
+        # Everything is multiline, unordered:
+        check(
+            pprint.pformat(
+                frozenset((
+                    frozenset((
+                        "xyz very-very long string",
+                        "qwerty is also absurdly long",
+                    )),
+                    frozenset((
+                        "abcd is even longer that before",
+                        "spam is not so long",
+                    )),
+                )),
+            ),
+            [
+                """
+                frozenset({frozenset({'abcd is even longer that before',
+                                      'spam is not so long'}),
+                           frozenset({'qwerty is also absurdly long',
+                                      'xyz very-very long string'})})
+                """,
+
+                """
+                frozenset({frozenset({'abcd is even longer that before',
+                                      'spam is not so long'}),
+                           frozenset({'xyz very-very long string',
+                                      'qwerty is also absurdly long'})})
+                """,
+
+                """
+                frozenset({frozenset({'qwerty is also absurdly long',
+                                      'xyz very-very long string'}),
+                           frozenset({'abcd is even longer that before',
+                                      'spam is not so long'})})
+                """,
+
+                """
+                frozenset({frozenset({'qwerty is also absurdly long',
+                                      'xyz very-very long string'}),
+                           frozenset({'spam is not so long',
+                                      'abcd is even longer that before'})})
+                """,
+            ],
+        )
 
     def test_depth(self):
         nested_tuple = (1, (2, (3, (4, (5, 6)))))
diff --git a/Lib/test/test_property.py b/Lib/test/test_property.py
index d4bdf50c0192ae..c12c908d2ee32d 100644
--- a/Lib/test/test_property.py
+++ b/Lib/test/test_property.py
@@ -183,27 +183,6 @@ def test_refleaks_in___init__(self):
             fake_prop.__init__('fget', 'fset', 'fdel', 'doc')
         self.assertAlmostEqual(gettotalrefcount() - refs_before, 0, delta=10)
 
-    @unittest.skipIf(sys.flags.optimize >= 2,
-                     "Docstrings are omitted with -O2 and above")
-    def test_class_property(self):
-        class A:
-            @classmethod
-            @property
-            def __doc__(cls):
-                return 'A doc for %r' % cls.__name__
-        self.assertEqual(A.__doc__, "A doc for 'A'")
-
-    @unittest.skipIf(sys.flags.optimize >= 2,
-                     "Docstrings are omitted with -O2 and above")
-    def test_class_property_override(self):
-        class A:
-            """First"""
-            @classmethod
-            @property
-            def __doc__(cls):
-                return 'Second'
-        self.assertEqual(A.__doc__, 'Second')
-
     def test_property_set_name_incorrect_args(self):
         p = property()
 
@@ -246,16 +225,67 @@ class PropertySubSlots(property):
 class PropertySubclassTests(unittest.TestCase):
 
     def test_slots_docstring_copy_exception(self):
-        try:
+        # A special case error that we preserve despite the GH-98963 behavior
+        # that would otherwise silently ignore this error.
+        # This came from commit b18500d39d791c879e9904ebac293402b4a7cd34
+        # as part of https://bugs.python.org/issue5890 which allowed docs to
+        # be set via property subclasses in the first place.
+        with self.assertRaises(AttributeError):
             class Foo(object):
                 @PropertySubSlots
                 def spam(self):
                     """Trying to copy this docstring will raise an exception"""
                     return 1
-        except AttributeError:
-            pass
-        else:
-            raise Exception("AttributeError not raised")
+
+    def test_property_with_slots_no_docstring(self):
+        # https://github.com/python/cpython/issues/98963#issuecomment-1574413319
+        class slotted_prop(property):
+            __slots__ = ("foo",)
+
+        p = slotted_prop()  # no AttributeError
+        self.assertIsNone(getattr(p, "__doc__", None))
+
+        def undocumented_getter():
+            return 4
+
+        p = slotted_prop(undocumented_getter)  # New in 3.12: no AttributeError
+        self.assertIsNone(getattr(p, "__doc__", None))
+
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    def test_property_with_slots_docstring_silently_dropped(self):
+        # https://github.com/python/cpython/issues/98963#issuecomment-1574413319
+        class slotted_prop(property):
+            __slots__ = ("foo",)
+
+        p = slotted_prop(doc="what's up")  # no AttributeError
+        self.assertIsNone(p.__doc__)
+
+        def documented_getter():
+            """getter doc."""
+            return 4
+
+        # Historical behavior: A docstring from a getter always raises.
+        # (matches test_slots_docstring_copy_exception above).
+        with self.assertRaises(AttributeError):
+            p = slotted_prop(documented_getter)
+
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    def test_property_with_slots_and_doc_slot_docstring_present(self):
+        # https://github.com/python/cpython/issues/98963#issuecomment-1574413319
+        class slotted_prop(property):
+            __slots__ = ("foo", "__doc__")
+
+        p = slotted_prop(doc="what's up")
+        self.assertEqual("what's up", p.__doc__)  # new in 3.12: This gets set.
+
+        def documented_getter():
+            """what's up getter doc?"""
+            return 4
+
+        p = slotted_prop(documented_getter)
+        self.assertEqual("what's up getter doc?", p.__doc__)
 
     @unittest.skipIf(sys.flags.optimize >= 2,
                      "Docstrings are omitted with -O2 and above")
diff --git a/Lib/test/test_pstats.py b/Lib/test/test_pstats.py
index acc2fa5385d923..d5a5a9738c2498 100644
--- a/Lib/test/test_pstats.py
+++ b/Lib/test/test_pstats.py
@@ -5,7 +5,9 @@
 from pstats import SortKey
 from enum import StrEnum, _test_simple_enum
 
+import os
 import pstats
+import tempfile
 import cProfile
 
 class AddCallersTestCase(unittest.TestCase):
@@ -36,6 +38,33 @@ def test_add(self):
         stats = pstats.Stats(stream=stream)
         stats.add(self.stats, self.stats)
 
+    def test_dump_and_load_works_correctly(self):
+        temp_storage_new = tempfile.NamedTemporaryFile(delete=False)
+        try:
+            self.stats.dump_stats(filename=temp_storage_new.name)
+            tmp_stats = pstats.Stats(temp_storage_new.name)
+            self.assertEqual(self.stats.stats, tmp_stats.stats)
+        finally:
+            temp_storage_new.close()
+            os.remove(temp_storage_new.name)
+
+    def test_load_equivalent_to_init(self):
+        stats = pstats.Stats()
+        self.temp_storage = tempfile.NamedTemporaryFile(delete=False)
+        try:
+            cProfile.run('import os', filename=self.temp_storage.name)
+            stats.load_stats(self.temp_storage.name)
+            created = pstats.Stats(self.temp_storage.name)
+            self.assertEqual(stats.stats, created.stats)
+        finally:
+            self.temp_storage.close()
+            os.remove(self.temp_storage.name)
+
+    def test_loading_wrong_types(self):
+        stats = pstats.Stats()
+        with self.assertRaises(TypeError):
+            stats.load_stats(42)
+
     def test_sort_stats_int(self):
         valid_args = {-1: 'stdname',
                       0: 'calls',
diff --git a/Lib/test/test_pty.py b/Lib/test/test_pty.py
index c723bb362c5d87..f31a68c5d84e03 100644
--- a/Lib/test/test_pty.py
+++ b/Lib/test/test_pty.py
@@ -76,21 +76,22 @@ def expectedFailureIfStdinIsTTY(fun):
         pass
     return fun
 
+
+def write_all(fd, data):
+    written = os.write(fd, data)
+    if written != len(data):
+        # gh-73256, gh-110673: It should never happen, but check just in case
+        raise Exception(f"short write: os.write({fd}, {len(data)} bytes) "
+                        f"wrote {written} bytes")
+
+
 # Marginal testing of pty suite. Cannot do extensive 'do or fail' testing
 # because pty code is not too portable.
 class PtyTest(unittest.TestCase):
     def setUp(self):
-        old_alarm = signal.signal(signal.SIGALRM, self.handle_sig)
-        self.addCleanup(signal.signal, signal.SIGALRM, old_alarm)
-
         old_sighup = signal.signal(signal.SIGHUP, self.handle_sighup)
         self.addCleanup(signal.signal, signal.SIGHUP, old_sighup)
 
-        # isatty() and close() can hang on some platforms. Set an alarm
-        # before running the test to make sure we don't hang forever.
-        self.addCleanup(signal.alarm, 0)
-        signal.alarm(10)
-
         # Save original stdin window size.
         self.stdin_dim = None
         if _HAVE_WINSZ:
@@ -101,9 +102,6 @@ def setUp(self):
             except tty.error:
                 pass
 
-    def handle_sig(self, sig, frame):
-        self.fail("isatty hung")
-
     @staticmethod
     def handle_sighup(signum, frame):
         pass
@@ -181,14 +179,14 @@ def test_openpty(self):
             os.set_blocking(master_fd, blocking)
 
         debug("Writing to slave_fd")
-        os.write(slave_fd, TEST_STRING_1)
+        write_all(slave_fd, TEST_STRING_1)
         s1 = _readline(master_fd)
         self.assertEqual(b'I wish to buy a fish license.\n',
                          normalize_output(s1))
 
         debug("Writing chunked output")
-        os.write(slave_fd, TEST_STRING_2[:5])
-        os.write(slave_fd, TEST_STRING_2[5:])
+        write_all(slave_fd, TEST_STRING_2[:5])
+        write_all(slave_fd, TEST_STRING_2[5:])
         s2 = _readline(master_fd)
         self.assertEqual(b'For my pet fish, Eric.\n', normalize_output(s2))
 
@@ -312,8 +310,8 @@ def setUp(self):
         self.orig_pty_waitpid = pty.waitpid
         self.fds = []  # A list of file descriptors to close.
         self.files = []
-        self.select_rfds_lengths = []
-        self.select_rfds_results = []
+        self.select_input = []
+        self.select_output = []
         self.tcsetattr_mode_setting = None
 
     def tearDown(self):
@@ -350,8 +348,8 @@ def _socketpair(self):
 
     def _mock_select(self, rfds, wfds, xfds):
         # This will raise IndexError when no more expected calls exist.
-        self.assertEqual(self.select_rfds_lengths.pop(0), len(rfds))
-        return self.select_rfds_results.pop(0), [], []
+        self.assertEqual((rfds, wfds, xfds), self.select_input.pop(0))
+        return self.select_output.pop(0)
 
     def _make_mock_fork(self, pid):
         def mock_fork():
@@ -371,14 +369,16 @@ def test__copy_to_each(self):
         masters = [s.fileno() for s in socketpair]
 
         # Feed data.  Smaller than PIPEBUF.  These writes will not block.
-        os.write(masters[1], b'from master')
-        os.write(write_to_stdin_fd, b'from stdin')
+        write_all(masters[1], b'from master')
+        write_all(write_to_stdin_fd, b'from stdin')
 
-        # Expect two select calls, the last one will cause IndexError
+        # Expect three select calls, the last one will cause IndexError
         pty.select = self._mock_select
-        self.select_rfds_lengths.append(2)
-        self.select_rfds_results.append([mock_stdin_fd, masters[0]])
-        self.select_rfds_lengths.append(2)
+        self.select_input.append(([mock_stdin_fd, masters[0]], [], []))
+        self.select_output.append(([mock_stdin_fd, masters[0]], [], []))
+        self.select_input.append(([mock_stdin_fd, masters[0]], [mock_stdout_fd, masters[0]], []))
+        self.select_output.append(([], [mock_stdout_fd, masters[0]], []))
+        self.select_input.append(([mock_stdin_fd, masters[0]], [], []))
 
         with self.assertRaises(IndexError):
             pty._copy(masters[0])
diff --git a/Lib/test/test_py_compile.py b/Lib/test/test_py_compile.py
index 5e0a44ad9691ec..c4e6551f605782 100644
--- a/Lib/test/test_py_compile.py
+++ b/Lib/test/test_py_compile.py
@@ -132,7 +132,9 @@ def test_exceptions_propagate(self):
             os.chmod(self.directory, mode.st_mode)
 
     def test_bad_coding(self):
-        bad_coding = os.path.join(os.path.dirname(__file__), 'bad_coding2.py')
+        bad_coding = os.path.join(os.path.dirname(__file__),
+                                  'tokenizedata',
+                                  'bad_coding2.py')
         with support.captured_stderr():
             self.assertIsNone(py_compile.compile(bad_coding, doraise=False))
         self.assertFalse(os.path.exists(
@@ -195,7 +197,9 @@ def test_invalidation_mode(self):
         self.assertEqual(flags, 0b1)
 
     def test_quiet(self):
-        bad_coding = os.path.join(os.path.dirname(__file__), 'bad_coding2.py')
+        bad_coding = os.path.join(os.path.dirname(__file__),
+                                  'tokenizedata',
+                                  'bad_coding2.py')
         with support.captured_stderr() as stderr:
             self.assertIsNone(py_compile.compile(bad_coding, doraise=False, quiet=2))
             self.assertIsNone(py_compile.compile(bad_coding, doraise=True, quiet=2))
@@ -260,14 +264,18 @@ def test_with_files(self):
         self.assertTrue(os.path.exists(self.cache_path))
 
     def test_bad_syntax(self):
-        bad_syntax = os.path.join(os.path.dirname(__file__), 'badsyntax_3131.py')
+        bad_syntax = os.path.join(os.path.dirname(__file__),
+                                  'tokenizedata',
+                                  'badsyntax_3131.py')
         rc, stdout, stderr = self.pycompilecmd_failure(bad_syntax)
         self.assertEqual(rc, 1)
         self.assertEqual(stdout, b'')
         self.assertIn(b'SyntaxError', stderr)
 
     def test_bad_syntax_with_quiet(self):
-        bad_syntax = os.path.join(os.path.dirname(__file__), 'badsyntax_3131.py')
+        bad_syntax = os.path.join(os.path.dirname(__file__),
+                                  'tokenizedata',
+                                  'badsyntax_3131.py')
         rc, stdout, stderr = self.pycompilecmd_failure('-q', bad_syntax)
         self.assertEqual(rc, 1)
         self.assertEqual(stdout, b'')
diff --git a/Lib/test/test_pyclbr.py b/Lib/test/test_pyclbr.py
index 23453e340159db..c7c5419ffe3e37 100644
--- a/Lib/test/test_pyclbr.py
+++ b/Lib/test/test_pyclbr.py
@@ -219,9 +219,6 @@ def test_others(self):
 
         # These were once some of the longest modules.
         cm('random', ignore=('Random',))  # from _random import Random as CoreGenerator
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', DeprecationWarning)
-            cm('cgi', ignore=('log',))      # set with = in module
         cm('pickle', ignore=('partial', 'PickleBuffer'))
         with warnings.catch_warnings():
             warnings.simplefilter('ignore', DeprecationWarning)
diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py
index cefc71cb5a7f54..eb50510e12b7b6 100644
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -1,3 +1,4 @@
+import datetime
 import os
 import sys
 import contextlib
@@ -12,6 +13,7 @@
 import stat
 import tempfile
 import test.support
+import time
 import types
 import typing
 import unittest
@@ -22,9 +24,11 @@
 from io import StringIO
 from collections import namedtuple
 from urllib.request import urlopen, urlcleanup
+from test import support
 from test.support import import_helper
 from test.support import os_helper
-from test.support.script_helper import assert_python_ok, assert_python_failure
+from test.support.script_helper import (assert_python_ok,
+                                        assert_python_failure, spawn_python)
 from test.support import threading_helper
 from test.support import (reap_children, captured_output, captured_stdout,
                           captured_stderr, is_emscripten, is_wasi,
@@ -39,8 +43,8 @@ class nonascii:
 
 if test.support.HAVE_DOCSTRINGS:
     expected_data_docstrings = (
-        'dictionary for instance variables (if defined)',
-        'list of weak references to the object (if defined)',
+        'dictionary for instance variables',
+        'list of weak references to the object',
         ) * 2
 else:
     expected_data_docstrings = ('', '', '', '')
@@ -104,10 +108,10 @@ class C(builtins.object)
      |  Data descriptors defined here:
      |
      |  __dict__
-     |      dictionary for instance variables (if defined)
+     |      dictionary for instance variables
      |
      |  __weakref__
-     |      list of weak references to the object (if defined)
+     |      list of weak references to the object
 
 FUNCTIONS
     doc_func()
@@ -165,16 +169,16 @@ class A(builtins.object)
 
     Data descriptors defined here:
         __dict__
-            dictionary for instance variables (if defined)
+            dictionary for instance variables
         __weakref__
-            list of weak references to the object (if defined)
+            list of weak references to the object
 
 class B(builtins.object)
     Data descriptors defined here:
         __dict__
-            dictionary for instance variables (if defined)
+            dictionary for instance variables
         __weakref__
-            list of weak references to the object (if defined)
+            list of weak references to the object
     Data and other attributes defined here:
         NO_MEANING = 'eggs'
         __annotations__ = {'NO_MEANING': <class 'str'>}
@@ -191,9 +195,9 @@ class C(builtins.object)
         __class_getitem__(item) from builtins.type
     Data descriptors defined here:
         __dict__
-            dictionary for instance variables (if defined)
+            dictionary for instance variables
         __weakref__
-             list of weak references to the object (if defined)
+             list of weak references to the object
 
 Functions
     doc_func()
@@ -631,6 +635,21 @@ def test_builtin_on_metaclasses(self):
         # Testing that the subclasses section does not appear
         self.assertNotIn('Built-in subclasses', text)
 
+    def test_fail_help_cli(self):
+        elines = (missing_pattern % 'abd').splitlines()
+        with spawn_python("-c" "help()") as proc:
+            out, _ = proc.communicate(b"abd")
+            olines = out.decode().splitlines()[-9:-6]
+            olines[0] = olines[0].removeprefix('help> ')
+            self.assertEqual(elines, olines)
+
+    def test_fail_help_output_redirect(self):
+        with StringIO() as buf:
+            helper = pydoc.Helper(output=buf)
+            helper.help("abd")
+            expected = missing_pattern % "abd"
+            self.assertEqual(expected, buf.getvalue().strip().replace('\n', os.linesep))
+
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'trace function introduces __locals__ unexpectedly')
     @requires_docstrings
@@ -810,10 +829,10 @@ class B(A)
  |  Data descriptors inherited from A:
  |
  |  __dict__
- |      dictionary for instance variables (if defined)
+ |      dictionary for instance variables
  |
  |  __weakref__
- |      list of weak references to the object (if defined)
+ |      list of weak references to the object
 ''' % __name__)
 
         doc = pydoc.render_doc(B, renderer=pydoc.HTMLDoc())
@@ -842,15 +861,104 @@ class B(A)
 
     Data descriptors inherited from A:
         __dict__
-            dictionary for instance variables (if defined)
+            dictionary for instance variables
         __weakref__
-            list of weak references to the object (if defined)
+            list of weak references to the object
 """
         as_text = html2text(doc)
         expected_lines = [line.strip() for line in expected_text.split("\n") if line]
         for expected_line in expected_lines:
             self.assertIn(expected_line, as_text)
 
+    def test_long_signatures(self):
+        from collections.abc import Callable
+        from typing import Literal, Annotated
+
+        class A:
+            def __init__(self,
+                         arg1: Callable[[int, int, int], str],
+                         arg2: Literal['some value', 'other value'],
+                         arg3: Annotated[int, 'some docs about this type'],
+                         ) -> None:
+                ...
+
+        doc = pydoc.render_doc(A)
+        # clean up the extra text formatting that pydoc performs
+        doc = re.sub('\b.', '', doc)
+        self.assertEqual(doc, '''Python Library Documentation: class A in module %s
+
+class A(builtins.object)
+ |  A(
+ |      arg1: collections.abc.Callable[[int, int, int], str],
+ |      arg2: Literal['some value', 'other value'],
+ |      arg3: Annotated[int, 'some docs about this type']
+ |  ) -> None
+ |
+ |  Methods defined here:
+ |
+ |  __init__(
+ |      self,
+ |      arg1: collections.abc.Callable[[int, int, int], str],
+ |      arg2: Literal['some value', 'other value'],
+ |      arg3: Annotated[int, 'some docs about this type']
+ |  ) -> None
+ |
+ |  ----------------------------------------------------------------------
+ |  Data descriptors defined here:
+ |
+ |  __dict__
+ |      dictionary for instance variables
+ |
+ |  __weakref__
+ |      list of weak references to the object
+''' % __name__)
+
+        def func(
+            arg1: Callable[[Annotated[int, 'Some doc']], str],
+            arg2: Literal[1, 2, 3, 4, 5, 6, 7, 8],
+        ) -> Annotated[int, 'Some other']:
+            ...
+
+        doc = pydoc.render_doc(func)
+        # clean up the extra text formatting that pydoc performs
+        doc = re.sub('\b.', '', doc)
+        self.assertEqual(doc, '''Python Library Documentation: function func in module %s
+
+func(
+    arg1: collections.abc.Callable[[typing.Annotated[int, 'Some doc']], str],
+    arg2: Literal[1, 2, 3, 4, 5, 6, 7, 8]
+) -> Annotated[int, 'Some other']
+''' % __name__)
+
+        def function_with_really_long_name_so_annotations_can_be_rather_small(
+            arg1: int,
+            arg2: str,
+        ):
+            ...
+
+        doc = pydoc.render_doc(function_with_really_long_name_so_annotations_can_be_rather_small)
+        # clean up the extra text formatting that pydoc performs
+        doc = re.sub('\b.', '', doc)
+        self.assertEqual(doc, '''Python Library Documentation: function function_with_really_long_name_so_annotations_can_be_rather_small in module %s
+
+function_with_really_long_name_so_annotations_can_be_rather_small(
+    arg1: int,
+    arg2: str
+)
+''' % __name__)
+
+        does_not_have_name = lambda \
+            very_long_parameter_name_that_should_not_fit_into_a_single_line, \
+            second_very_long_parameter_name: ...
+
+        doc = pydoc.render_doc(does_not_have_name)
+        # clean up the extra text formatting that pydoc performs
+        doc = re.sub('\b.', '', doc)
+        self.assertEqual(doc, '''Python Library Documentation: function <lambda> in module %s
+
+<lambda> lambda very_long_parameter_name_that_should_not_fit_into_a_single_line, second_very_long_parameter_name
+''' % __name__)
+
     def test__future__imports(self):
         # __future__ features are excluded from module help,
         # except when it's the __future__ module itself
@@ -1164,6 +1272,148 @@ def test_module_level_callable(self):
         self.assertEqual(self._get_summary_line(os.stat),
             "stat(path, *, dir_fd=None, follow_symlinks=True)")
 
+    def test_module_level_callable_noargs(self):
+        self.assertEqual(self._get_summary_line(time.time),
+            "time()")
+
+    def test_module_level_callable_o(self):
+        try:
+            import _stat
+        except ImportError:
+            # stat.S_IMODE() and _stat.S_IMODE() have a different signature
+            self.skipTest('_stat extension is missing')
+
+        self.assertEqual(self._get_summary_line(_stat.S_IMODE),
+            "S_IMODE(object, /)")
+
+    def test_unbound_builtin_method_noargs(self):
+        self.assertEqual(self._get_summary_line(str.lower),
+            "lower(self, /)")
+
+    def test_bound_builtin_method_noargs(self):
+        self.assertEqual(self._get_summary_line(''.lower),
+            "lower() method of builtins.str instance")
+
+    def test_unbound_builtin_method_o(self):
+        self.assertEqual(self._get_summary_line(set.add),
+            "add(self, object, /)")
+
+    def test_bound_builtin_method_o(self):
+        self.assertEqual(self._get_summary_line(set().add),
+            "add(object, /) method of builtins.set instance")
+
+    def test_unbound_builtin_method_coexist_o(self):
+        self.assertEqual(self._get_summary_line(set.__contains__),
+            "__contains__(self, object, /)")
+
+    def test_bound_builtin_method_coexist_o(self):
+        self.assertEqual(self._get_summary_line(set().__contains__),
+            "__contains__(object, /) method of builtins.set instance")
+
+    def test_unbound_builtin_classmethod_noargs(self):
+        self.assertEqual(self._get_summary_line(datetime.datetime.__dict__['utcnow']),
+            "utcnow(type, /)")
+
+    def test_bound_builtin_classmethod_noargs(self):
+        self.assertEqual(self._get_summary_line(datetime.datetime.utcnow),
+            "utcnow() method of builtins.type instance")
+
+    def test_unbound_builtin_classmethod_o(self):
+        self.assertEqual(self._get_summary_line(dict.__dict__['__class_getitem__']),
+            "__class_getitem__(type, object, /)")
+
+    def test_bound_builtin_classmethod_o(self):
+        self.assertEqual(self._get_summary_line(dict.__class_getitem__),
+            "__class_getitem__(object, /) method of builtins.type instance")
+
+    @support.cpython_only
+    def test_module_level_callable_unrepresentable_default(self):
+        import _testcapi
+        builtin = _testcapi.func_with_unrepresentable_signature
+        self.assertEqual(self._get_summary_line(builtin),
+            "func_with_unrepresentable_signature(a, b=<x>)")
+
+    @support.cpython_only
+    def test_builtin_staticmethod_unrepresentable_default(self):
+        self.assertEqual(self._get_summary_line(str.maketrans),
+            "maketrans(x, y=<unrepresentable>, z=<unrepresentable>, /)")
+        import _testcapi
+        cls = _testcapi.DocStringUnrepresentableSignatureTest
+        self.assertEqual(self._get_summary_line(cls.staticmeth),
+            "staticmeth(a, b=<x>)")
+
+    @support.cpython_only
+    def test_unbound_builtin_method_unrepresentable_default(self):
+        self.assertEqual(self._get_summary_line(dict.pop),
+            "pop(self, key, default=<unrepresentable>, /)")
+        import _testcapi
+        cls = _testcapi.DocStringUnrepresentableSignatureTest
+        self.assertEqual(self._get_summary_line(cls.meth),
+            "meth(self, /, a, b=<x>)")
+
+    @support.cpython_only
+    def test_bound_builtin_method_unrepresentable_default(self):
+        self.assertEqual(self._get_summary_line({}.pop),
+            "pop(key, default=<unrepresentable>, /) "
+            "method of builtins.dict instance")
+        import _testcapi
+        obj = _testcapi.DocStringUnrepresentableSignatureTest()
+        self.assertEqual(self._get_summary_line(obj.meth),
+            "meth(a, b=<x>) "
+            "method of _testcapi.DocStringUnrepresentableSignatureTest instance")
+
+    @support.cpython_only
+    def test_unbound_builtin_classmethod_unrepresentable_default(self):
+        import _testcapi
+        cls = _testcapi.DocStringUnrepresentableSignatureTest
+        descr = cls.__dict__['classmeth']
+        self.assertEqual(self._get_summary_line(descr),
+            "classmeth(type, /, a, b=<x>)")
+
+    @support.cpython_only
+    def test_bound_builtin_classmethod_unrepresentable_default(self):
+        import _testcapi
+        cls = _testcapi.DocStringUnrepresentableSignatureTest
+        self.assertEqual(self._get_summary_line(cls.classmeth),
+            "classmeth(a, b=<x>) method of builtins.type instance")
+
+    def test_overridden_text_signature(self):
+        class C:
+            def meth(*args, **kwargs):
+                pass
+            @classmethod
+            def cmeth(*args, **kwargs):
+                pass
+            @staticmethod
+            def smeth(*args, **kwargs):
+                pass
+        for text_signature, unbound, bound in [
+            ("($slf)", "(slf, /)", "()"),
+            ("($slf, /)", "(slf, /)", "()"),
+            ("($slf, /, arg)", "(slf, /, arg)", "(arg)"),
+            ("($slf, /, arg=<x>)", "(slf, /, arg=<x>)", "(arg=<x>)"),
+            ("($slf, arg, /)", "(slf, arg, /)", "(arg, /)"),
+            ("($slf, arg=<x>, /)", "(slf, arg=<x>, /)", "(arg=<x>, /)"),
+            ("(/, slf, arg)", "(/, slf, arg)", "(/, slf, arg)"),
+            ("(/, slf, arg=<x>)", "(/, slf, arg=<x>)", "(/, slf, arg=<x>)"),
+            ("(slf, /, arg)", "(slf, /, arg)", "(arg)"),
+            ("(slf, /, arg=<x>)", "(slf, /, arg=<x>)", "(arg=<x>)"),
+            ("(slf, arg, /)", "(slf, arg, /)", "(arg, /)"),
+            ("(slf, arg=<x>, /)", "(slf, arg=<x>, /)", "(arg=<x>, /)"),
+        ]:
+            with self.subTest(text_signature):
+                C.meth.__text_signature__ = text_signature
+                self.assertEqual(self._get_summary_line(C.meth),
+                        "meth" + unbound)
+                self.assertEqual(self._get_summary_line(C().meth),
+                        "meth" + bound + " method of test.test_pydoc.C instance")
+                C.cmeth.__func__.__text_signature__ = text_signature
+                self.assertEqual(self._get_summary_line(C.cmeth),
+                        "cmeth" + bound + " method of builtins.type instance")
+                C.smeth.__text_signature__ = text_signature
+                self.assertEqual(self._get_summary_line(C.smeth),
+                        "smeth" + unbound)
+
     @requires_docstrings
     def test_staticmethod(self):
         class X:
diff --git a/Lib/test/test_pyexpat.py b/Lib/test/test_pyexpat.py
index 863c1194672c1c..d941a1a8f9ebc6 100644
--- a/Lib/test/test_pyexpat.py
+++ b/Lib/test/test_pyexpat.py
@@ -1,18 +1,19 @@
 # XXX TypeErrors on calling handlers, or on bad return values from a
 # handler, are obscure and unhelpful.
 
-from io import BytesIO
 import os
-import platform
 import sys
 import sysconfig
 import unittest
 import traceback
+from io import BytesIO
+from test import support
+from test.support import os_helper
 
 from xml.parsers import expat
 from xml.parsers.expat import errors
 
-from test.support import sortdict, is_emscripten, is_wasi
+from test.support import sortdict
 
 
 class SetAttributeTest(unittest.TestCase):
@@ -281,12 +282,10 @@ def test_legal(self):
         expat.ParserCreate(namespace_separator=' ')
 
     def test_illegal(self):
-        try:
+        with self.assertRaisesRegex(TypeError,
+                r"ParserCreate\(\) argument (2|'namespace_separator') "
+                r"must be str or None, not int"):
             expat.ParserCreate(namespace_separator=42)
-            self.fail()
-        except TypeError as e:
-            self.assertEqual(str(e),
-                "ParserCreate() argument 'namespace_separator' must be str or None, not int")
 
         try:
             expat.ParserCreate(namespace_separator='too long')
@@ -441,37 +440,59 @@ def test7(self):
 # Test handling of exception from callback:
 class HandlerExceptionTest(unittest.TestCase):
     def StartElementHandler(self, name, attrs):
-        raise RuntimeError(name)
+        raise RuntimeError(f'StartElementHandler: <{name}>')
 
     def check_traceback_entry(self, entry, filename, funcname):
-        self.assertEqual(os.path.basename(entry[0]), filename)
-        self.assertEqual(entry[2], funcname)
+        self.assertEqual(os.path.basename(entry.filename), filename)
+        self.assertEqual(entry.name, funcname)
 
+    @support.cpython_only
     def test_exception(self):
+        # gh-66652: test _PyTraceback_Add() used by pyexpat.c to inject frames
+
+        # Change the current directory to the Python source code directory
+        # if it is available.
+        src_dir = sysconfig.get_config_var('abs_builddir')
+        if src_dir:
+            have_source = os.path.isdir(src_dir)
+        else:
+            have_source = False
+        if have_source:
+            with os_helper.change_cwd(src_dir):
+                self._test_exception(have_source)
+        else:
+            self._test_exception(have_source)
+
+    def _test_exception(self, have_source):
+        # Use path relative to the current directory which should be the Python
+        # source code directory (if it is available).
+        PYEXPAT_C = os.path.join('Modules', 'pyexpat.c')
+
         parser = expat.ParserCreate()
         parser.StartElementHandler = self.StartElementHandler
         try:
             parser.Parse(b"<a><b><c/></b></a>", True)
-            self.fail()
-        except RuntimeError as e:
-            self.assertEqual(e.args[0], 'a',
-                             "Expected RuntimeError for element 'a', but" + \
-                             " found %r" % e.args[0])
-            # Check that the traceback contains the relevant line in pyexpat.c
-            entries = traceback.extract_tb(e.__traceback__)
-            self.assertEqual(len(entries), 3)
-            self.check_traceback_entry(entries[0],
-                                       "test_pyexpat.py", "test_exception")
-            self.check_traceback_entry(entries[1],
-                                       "pyexpat.c", "StartElement")
-            self.check_traceback_entry(entries[2],
-                                       "test_pyexpat.py", "StartElementHandler")
-            if (sysconfig.is_python_build()
-                and not (sys.platform == 'win32' and platform.machine() == 'ARM')
-                and not is_emscripten
-                and not is_wasi
-            ):
-                self.assertIn('call_with_frame("StartElement"', entries[1][3])
+
+            self.fail("the parser did not raise RuntimeError")
+        except RuntimeError as exc:
+            self.assertEqual(exc.args[0], 'StartElementHandler: <a>', exc)
+            entries = traceback.extract_tb(exc.__traceback__)
+
+        self.assertEqual(len(entries), 3, entries)
+        self.check_traceback_entry(entries[0],
+                                   "test_pyexpat.py", "_test_exception")
+        self.check_traceback_entry(entries[1],
+                                   os.path.basename(PYEXPAT_C),
+                                   "StartElement")
+        self.check_traceback_entry(entries[2],
+                                   "test_pyexpat.py", "StartElementHandler")
+
+        # Check that the traceback contains the relevant line in
+        # Modules/pyexpat.c. Skip the test if Modules/pyexpat.c is not
+        # available.
+        if have_source and os.path.exists(PYEXPAT_C):
+            self.assertIn('call_with_frame("StartElement"',
+                          entries[1].line)
 
 
 # Test Current* members:
@@ -523,7 +544,7 @@ def handler(text):
         parser = expat.ParserCreate()
         parser.CharacterDataHandler = handler
 
-        self.assertRaises(Exception, parser.Parse, xml.encode('iso8859'))
+        self.assertRaises(SpecificException, parser.Parse, xml.encode('iso8859'))
 
 class ChardataBufferTest(unittest.TestCase):
     """
diff --git a/Lib/test/test_raise.py b/Lib/test/test_raise.py
index 5936d7535edd5f..6d26a61bee4292 100644
--- a/Lib/test/test_raise.py
+++ b/Lib/test/test_raise.py
@@ -185,6 +185,20 @@ def test_class_cause(self):
         else:
             self.fail("No exception raised")
 
+    def test_class_cause_nonexception_result(self):
+        class ConstructsNone(BaseException):
+            @classmethod
+            def __new__(*args, **kwargs):
+                return None
+        try:
+            raise IndexError from ConstructsNone
+        except TypeError as e:
+            self.assertIn("should have returned an instance of BaseException", str(e))
+        except IndexError:
+            self.fail("Wrong kind of exception raised")
+        else:
+            self.fail("No exception raised")
+
     def test_instance_cause(self):
         cause = KeyError()
         try:
diff --git a/Lib/test/test_random.py b/Lib/test/test_random.py
index 50bea7be6d54c7..b1e4ef4197d130 100644
--- a/Lib/test/test_random.py
+++ b/Lib/test/test_random.py
@@ -1081,6 +1081,7 @@ def test_binomialvariate(self):
             B(n=1, p=-0.5)                     # Negative p
         with self.assertRaises(ValueError):
             B(n=1, p=1.5)                      # p > 1.0
+        self.assertEqual(B(0, 0.5), 0)         # n == 0
         self.assertEqual(B(10, 0.0), 0)        # p == 0.0
         self.assertEqual(B(10, 1.0), 10)       # p == 1.0
         self.assertTrue(B(1, 0.3) in {0, 1})   # n == 1 fast path
@@ -1088,6 +1089,9 @@ def test_binomialvariate(self):
         self.assertTrue(B(1, 0.0) in {0})      # n == 1 fast path
         self.assertTrue(B(1, 1.0) in {1})      # n == 1 fast path
 
+        # BG method very small p
+        self.assertEqual(B(5, 1e-18), 0)
+
         # BG method p <= 0.5 and n*p=1.25
         self.assertTrue(B(5, 0.25) in set(range(6)))
 
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 11628a236ade9a..1eca22f45378df 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -1,7 +1,7 @@
 from test.support import (gc_collect, bigmemtest, _2G,
                           cpython_only, captured_stdout,
                           check_disallow_instantiation, is_emscripten, is_wasi,
-                          SHORT_TIMEOUT)
+                          warnings_helper, SHORT_TIMEOUT)
 import locale
 import re
 import string
@@ -127,8 +127,10 @@ def test_basic_re_sub(self):
         self.assertEqual(re.sub("(?i)b+", "x", "bbbb BBBB"), 'x x')
         self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y'),
                          '9.3 -3 24x100y')
-        self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', 3),
-                         '9.3 -3 23x99y')
+        with self.assertWarns(DeprecationWarning) as w:
+            self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', 3),
+                             '9.3 -3 23x99y')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', count=3),
                          '9.3 -3 23x99y')
 
@@ -235,9 +237,42 @@ def test_sub_template_numeric_escape(self):
 
     def test_qualified_re_sub(self):
         self.assertEqual(re.sub('a', 'b', 'aaaaa'), 'bbbbb')
-        self.assertEqual(re.sub('a', 'b', 'aaaaa', 1), 'baaaa')
+        with self.assertWarns(DeprecationWarning) as w:
+            self.assertEqual(re.sub('a', 'b', 'aaaaa', 1), 'baaaa')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(re.sub('a', 'b', 'aaaaa', count=1), 'baaaa')
 
+        with self.assertRaisesRegex(TypeError,
+                r"sub\(\) got multiple values for argument 'count'"):
+            re.sub('a', 'b', 'aaaaa', 1, count=1)
+        with self.assertRaisesRegex(TypeError,
+                r"sub\(\) got multiple values for argument 'flags'"):
+            re.sub('a', 'b', 'aaaaa', 1, 0, flags=0)
+        with self.assertRaisesRegex(TypeError,
+                r"sub\(\) takes from 3 to 5 positional arguments but 6 "
+                r"were given"):
+            re.sub('a', 'b', 'aaaaa', 1, 0, 0)
+
+    def test_misuse_flags(self):
+        with self.assertWarns(DeprecationWarning) as w:
+            result = re.sub('a', 'b', 'aaaaa', re.I)
+        self.assertEqual(result, re.sub('a', 'b', 'aaaaa', count=int(re.I)))
+        self.assertEqual(str(w.warning),
+                         "'count' is passed as positional argument")
+        self.assertEqual(w.filename, __file__)
+        with self.assertWarns(DeprecationWarning) as w:
+            result = re.subn("b*", "x", "xyz", re.I)
+        self.assertEqual(result, re.subn("b*", "x", "xyz", count=int(re.I)))
+        self.assertEqual(str(w.warning),
+                         "'count' is passed as positional argument")
+        self.assertEqual(w.filename, __file__)
+        with self.assertWarns(DeprecationWarning) as w:
+            result = re.split(":", ":a:b::c", re.I)
+        self.assertEqual(result, re.split(":", ":a:b::c", maxsplit=int(re.I)))
+        self.assertEqual(str(w.warning),
+                         "'maxsplit' is passed as positional argument")
+        self.assertEqual(w.filename, __file__)
+
     def test_bug_114660(self):
         self.assertEqual(re.sub(r'(\S)\s+(\S)', r'\1 \2', 'hello  there'),
                          'hello there')
@@ -344,9 +379,22 @@ def test_re_subn(self):
         self.assertEqual(re.subn("b+", "x", "bbbb BBBB"), ('x BBBB', 1))
         self.assertEqual(re.subn("b+", "x", "xyz"), ('xyz', 0))
         self.assertEqual(re.subn("b*", "x", "xyz"), ('xxxyxzx', 4))
-        self.assertEqual(re.subn("b*", "x", "xyz", 2), ('xxxyz', 2))
+        with self.assertWarns(DeprecationWarning) as w:
+            self.assertEqual(re.subn("b*", "x", "xyz", 2), ('xxxyz', 2))
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(re.subn("b*", "x", "xyz", count=2), ('xxxyz', 2))
 
+        with self.assertRaisesRegex(TypeError,
+                r"subn\(\) got multiple values for argument 'count'"):
+            re.subn('a', 'b', 'aaaaa', 1, count=1)
+        with self.assertRaisesRegex(TypeError,
+                r"subn\(\) got multiple values for argument 'flags'"):
+            re.subn('a', 'b', 'aaaaa', 1, 0, flags=0)
+        with self.assertRaisesRegex(TypeError,
+                r"subn\(\) takes from 3 to 5 positional arguments but 6 "
+                r"were given"):
+            re.subn('a', 'b', 'aaaaa', 1, 0, 0)
+
     def test_re_split(self):
         for string in ":a:b::c", S(":a:b::c"):
             self.assertTypedEqual(re.split(":", string),
@@ -401,7 +449,9 @@ def test_re_split(self):
                 self.assertTypedEqual(re.split(sep, ':a:b::c'), expected)
 
     def test_qualified_re_split(self):
-        self.assertEqual(re.split(":", ":a:b::c", 2), ['', 'a', 'b::c'])
+        with self.assertWarns(DeprecationWarning) as w:
+            self.assertEqual(re.split(":", ":a:b::c", 2), ['', 'a', 'b::c'])
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(re.split(":", ":a:b::c", maxsplit=2), ['', 'a', 'b::c'])
         self.assertEqual(re.split(':', 'a:b:c:d', maxsplit=2), ['a', 'b', 'c:d'])
         self.assertEqual(re.split("(:)", ":a:b::c", maxsplit=2),
@@ -411,6 +461,17 @@ def test_qualified_re_split(self):
         self.assertEqual(re.split("(:*)", ":a:b::c", maxsplit=2),
                          ['', ':', '', '', 'a:b::c'])
 
+        with self.assertRaisesRegex(TypeError,
+                r"split\(\) got multiple values for argument 'maxsplit'"):
+            re.split(":", ":a:b::c", 2, maxsplit=2)
+        with self.assertRaisesRegex(TypeError,
+                r"split\(\) got multiple values for argument 'flags'"):
+            re.split(":", ":a:b::c", 2, 0, flags=0)
+        with self.assertRaisesRegex(TypeError,
+                r"split\(\) takes from 2 to 4 positional arguments but 5 "
+                r"were given"):
+            re.split(":", ":a:b::c", 2, 0, 0)
+
     def test_re_findall(self):
         self.assertEqual(re.findall(":+", "abc"), [])
         for string in "a:b::c:::d", S("a:b::c:::d"):
@@ -1046,33 +1107,6 @@ def test_ignore_case_range(self):
     def test_category(self):
         self.assertEqual(re.match(r"(\s)", " ").group(1), " ")
 
-    @cpython_only
-    def test_case_helpers(self):
-        import _sre
-        for i in range(128):
-            c = chr(i)
-            lo = ord(c.lower())
-            self.assertEqual(_sre.ascii_tolower(i), lo)
-            self.assertEqual(_sre.unicode_tolower(i), lo)
-            iscased = c in string.ascii_letters
-            self.assertEqual(_sre.ascii_iscased(i), iscased)
-            self.assertEqual(_sre.unicode_iscased(i), iscased)
-
-        for i in list(range(128, 0x1000)) + [0x10400, 0x10428]:
-            c = chr(i)
-            self.assertEqual(_sre.ascii_tolower(i), i)
-            if i != 0x0130:
-                self.assertEqual(_sre.unicode_tolower(i), ord(c.lower()))
-            iscased = c != c.lower() or c != c.upper()
-            self.assertFalse(_sre.ascii_iscased(i))
-            self.assertEqual(_sre.unicode_iscased(i),
-                             c != c.lower() or c != c.upper())
-
-        self.assertEqual(_sre.ascii_tolower(0x0130), 0x0130)
-        self.assertEqual(_sre.unicode_tolower(0x0130), ord('i'))
-        self.assertFalse(_sre.ascii_iscased(0x0130))
-        self.assertTrue(_sre.unicode_iscased(0x0130))
-
     def test_not_literal(self):
         self.assertEqual(re.search(r"\s([^a])", " b").group(1), "b")
         self.assertEqual(re.search(r"\s([^a]*)", " bb").group(1), "bb")
@@ -1522,10 +1556,11 @@ def test_bug_6561(self):
         for x in not_decimal_digits:
             self.assertIsNone(re.match(r'^\d$', x))
 
+    @warnings_helper.ignore_warnings(category=DeprecationWarning)  # gh-80480 array('u')
     def test_empty_array(self):
         # SF buf 1647541
         import array
-        for typecode in 'bBuhHiIlLfd':
+        for typecode in 'bBhuwHiIlLfd':
             a = array.array(typecode)
             self.assertIsNone(re.compile(b"bla").match(a))
             self.assertEqual(re.compile(b"").match(a).groups(), ())
@@ -1769,20 +1804,6 @@ def test_bug_6509(self):
         pat = re.compile(b'..')
         self.assertEqual(pat.sub(lambda m: b'bytes', b'a5'), b'bytes')
 
-    def test_dealloc(self):
-        # issue 3299: check for segfault in debug build
-        import _sre
-        # the overflow limit is different on wide and narrow builds and it
-        # depends on the definition of SRE_CODE (see sre.h).
-        # 2**128 should be big enough to overflow on both. For smaller values
-        # a RuntimeError is raised instead of OverflowError.
-        long_overflow = 2**128
-        self.assertRaises(TypeError, re.finditer, "a", {})
-        with self.assertRaises(OverflowError):
-            _sre.compile("abc", 0, [long_overflow], 0, {}, ())
-        with self.assertRaises(TypeError):
-            _sre.compile({}, 0, [], 0, [], [])
-
     def test_search_dot_unicode(self):
         self.assertTrue(re.search("123.*-", '123abc-'))
         self.assertTrue(re.search("123.*-", '123\xe9-'))
@@ -1840,20 +1861,28 @@ def test_repeat_minmax_overflow(self):
         self.assertRaises(OverflowError, re.compile, r".{%d,}?" % 2**128)
         self.assertRaises(OverflowError, re.compile, r".{%d,%d}" % (2**129, 2**128))
 
-    @cpython_only
-    def test_repeat_minmax_overflow_maxrepeat(self):
-        try:
-            from _sre import MAXREPEAT
-        except ImportError:
-            self.skipTest('requires _sre.MAXREPEAT constant')
-        string = "x" * 100000
-        self.assertIsNone(re.match(r".{%d}" % (MAXREPEAT - 1), string))
-        self.assertEqual(re.match(r".{,%d}" % (MAXREPEAT - 1), string).span(),
-                         (0, 100000))
-        self.assertIsNone(re.match(r".{%d,}?" % (MAXREPEAT - 1), string))
-        self.assertRaises(OverflowError, re.compile, r".{%d}" % MAXREPEAT)
-        self.assertRaises(OverflowError, re.compile, r".{,%d}" % MAXREPEAT)
-        self.assertRaises(OverflowError, re.compile, r".{%d,}?" % MAXREPEAT)
+    def test_look_behind_overflow(self):
+        string = "x" * 2_500_000
+        p1 = r"(?<=((.{%d}){%d}){%d})"
+        p2 = r"(?<!((.{%d}){%d}){%d})"
+        # Test that the templates are valid and look-behind with width 2**21
+        # (larger than sys.maxunicode) are supported.
+        self.assertEqual(re.search(p1 % (2**7, 2**7, 2**7), string).span(),
+                         (2**21, 2**21))
+        self.assertEqual(re.search(p2 % (2**7, 2**7, 2**7), string).span(),
+                         (0, 0))
+        # Test that 2**22 is accepted as a repetition number and look-behind
+        # width.
+        re.compile(p1 % (2**22, 1, 1))
+        re.compile(p1 % (1, 2**22, 1))
+        re.compile(p1 % (1, 1, 2**22))
+        re.compile(p2 % (2**22, 1, 1))
+        re.compile(p2 % (1, 2**22, 1))
+        re.compile(p2 % (1, 1, 2**22))
+        # But 2**66 is too large for look-behind width.
+        errmsg = "looks too much behind"
+        self.assertRaisesRegex(re.error, errmsg, re.compile, p1 % (2**22, 2**22, 2**22))
+        self.assertRaisesRegex(re.error, errmsg, re.compile, p2 % (2**22, 2**22, 2**22))
 
     def test_backref_group_name_in_exception(self):
         # Issue 17341: Poor error message when compiling invalid regex
@@ -2397,29 +2426,25 @@ def test_bug_gh91616(self):
         self.assertTrue(re.fullmatch(r'(?s:(?>.*?\.).*)\Z', "a.txt")) # reproducer
         self.assertTrue(re.fullmatch(r'(?s:(?=(?P<g0>.*?\.))(?P=g0).*)\Z', "a.txt"))
 
-    def test_template_function_and_flag_is_deprecated(self):
-        with self.assertWarns(DeprecationWarning) as cm:
-            template_re1 = re.template(r'a')
-        self.assertIn('re.template()', str(cm.warning))
-        self.assertIn('is deprecated', str(cm.warning))
-        self.assertIn('function', str(cm.warning))
-        self.assertNotIn('flag', str(cm.warning))
-
-        with self.assertWarns(DeprecationWarning) as cm:
-            # we deliberately use more flags here to test that that still
-            # triggers the warning
-            # if paranoid, we could test multiple different combinations,
-            # but it's probably not worth it
-            template_re2 = re.compile(r'a', flags=re.TEMPLATE|re.UNICODE)
-        self.assertIn('re.TEMPLATE', str(cm.warning))
-        self.assertIn('is deprecated', str(cm.warning))
-        self.assertIn('flag', str(cm.warning))
-        self.assertNotIn('function', str(cm.warning))
-
-        # while deprecated, is should still function
-        self.assertEqual(template_re1, template_re2)
-        self.assertTrue(template_re1.match('ahoy'))
-        self.assertFalse(template_re1.match('nope'))
+    def test_bug_gh100061(self):
+        # gh-100061
+        self.assertEqual(re.match('(?>(?:.(?!D))+)', 'ABCDE').span(), (0, 2))
+        self.assertEqual(re.match('(?:.(?!D))++', 'ABCDE').span(), (0, 2))
+        self.assertEqual(re.match('(?>(?:.(?!D))*)', 'ABCDE').span(), (0, 2))
+        self.assertEqual(re.match('(?:.(?!D))*+', 'ABCDE').span(), (0, 2))
+        self.assertEqual(re.match('(?>(?:.(?!D))?)', 'CDE').span(), (0, 0))
+        self.assertEqual(re.match('(?:.(?!D))?+', 'CDE').span(), (0, 0))
+        self.assertEqual(re.match('(?>(?:.(?!D)){1,3})', 'ABCDE').span(), (0, 2))
+        self.assertEqual(re.match('(?:.(?!D)){1,3}+', 'ABCDE').span(), (0, 2))
+        # gh-106052
+        self.assertEqual(re.match("(?>(?:ab?c)+)", "aca").span(), (0, 2))
+        self.assertEqual(re.match("(?:ab?c)++", "aca").span(), (0, 2))
+        self.assertEqual(re.match("(?>(?:ab?c)*)", "aca").span(), (0, 2))
+        self.assertEqual(re.match("(?:ab?c)*+", "aca").span(), (0, 2))
+        self.assertEqual(re.match("(?>(?:ab?c)?)", "a").span(), (0, 0))
+        self.assertEqual(re.match("(?:ab?c)?+", "a").span(), (0, 0))
+        self.assertEqual(re.match("(?>(?:ab?c){1,3})", "aca").span(), (0, 2))
+        self.assertEqual(re.match("(?:ab?c){1,3}+", "aca").span(), (0, 2))
 
     @unittest.skipIf(multiprocessing is None, 'test requires multiprocessing')
     def test_regression_gh94675(self):
@@ -2441,6 +2466,9 @@ def test_regression_gh94675(self):
                 p.terminate()
                 p.join()
 
+    def test_fail(self):
+        self.assertEqual(re.search(r'12(?!)|3', '123')[0], '3')
+
 
 def get_debug_out(pat):
     with captured_stdout() as out:
@@ -2502,7 +2530,10 @@ def test_debug_flag(self):
 
     def test_atomic_group(self):
         self.assertEqual(get_debug_out(r'(?>ab?)'), '''\
-ATOMIC_GROUP [(LITERAL, 97), (MAX_REPEAT, (0, 1, [(LITERAL, 98)]))]
+ATOMIC_GROUP
+  LITERAL 97
+  MAX_REPEAT 0 1
+    LITERAL 98
 
  0. INFO 4 0b0 1 2 (to 5)
  5: ATOMIC_GROUP 11 (to 17)
@@ -2614,11 +2645,11 @@ def test_flags_repr(self):
                          "re.IGNORECASE|re.DOTALL|re.VERBOSE|0x100000")
         self.assertEqual(
                 repr(~re.I),
-                "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DOTALL|re.VERBOSE|re.TEMPLATE|re.DEBUG")
+                "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DOTALL|re.VERBOSE|re.DEBUG|0x1")
         self.assertEqual(repr(~(re.I|re.S|re.X)),
-                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG")
+                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DEBUG|0x1")
         self.assertEqual(repr(~(re.I|re.S|re.X|(1<<20))),
-                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG|0xffe00")
+                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DEBUG|0xffe01")
 
 
 class ImplementationTest(unittest.TestCase):
@@ -2686,6 +2717,78 @@ def test_deprecated_modules(self):
                     self.assertTrue(hasattr(mod, attr))
                 del sys.modules[name]
 
+    @cpython_only
+    def test_case_helpers(self):
+        import _sre
+        for i in range(128):
+            c = chr(i)
+            lo = ord(c.lower())
+            self.assertEqual(_sre.ascii_tolower(i), lo)
+            self.assertEqual(_sre.unicode_tolower(i), lo)
+            iscased = c in string.ascii_letters
+            self.assertEqual(_sre.ascii_iscased(i), iscased)
+            self.assertEqual(_sre.unicode_iscased(i), iscased)
+
+        for i in list(range(128, 0x1000)) + [0x10400, 0x10428]:
+            c = chr(i)
+            self.assertEqual(_sre.ascii_tolower(i), i)
+            if i != 0x0130:
+                self.assertEqual(_sre.unicode_tolower(i), ord(c.lower()))
+            iscased = c != c.lower() or c != c.upper()
+            self.assertFalse(_sre.ascii_iscased(i))
+            self.assertEqual(_sre.unicode_iscased(i),
+                             c != c.lower() or c != c.upper())
+
+        self.assertEqual(_sre.ascii_tolower(0x0130), 0x0130)
+        self.assertEqual(_sre.unicode_tolower(0x0130), ord('i'))
+        self.assertFalse(_sre.ascii_iscased(0x0130))
+        self.assertTrue(_sre.unicode_iscased(0x0130))
+
+    @cpython_only
+    def test_dealloc(self):
+        # issue 3299: check for segfault in debug build
+        import _sre
+        # the overflow limit is different on wide and narrow builds and it
+        # depends on the definition of SRE_CODE (see sre.h).
+        # 2**128 should be big enough to overflow on both. For smaller values
+        # a RuntimeError is raised instead of OverflowError.
+        long_overflow = 2**128
+        self.assertRaises(TypeError, re.finditer, "a", {})
+        with self.assertRaises(OverflowError):
+            _sre.compile("abc", 0, [long_overflow], 0, {}, ())
+        with self.assertRaises(TypeError):
+            _sre.compile({}, 0, [], 0, [], [])
+        # gh-110590: `TypeError` was overwritten with `OverflowError`:
+        with self.assertRaises(TypeError):
+            _sre.compile('', 0, ['abc'], 0, {}, ())
+
+    @cpython_only
+    def test_repeat_minmax_overflow_maxrepeat(self):
+        try:
+            from _sre import MAXREPEAT
+        except ImportError:
+            self.skipTest('requires _sre.MAXREPEAT constant')
+        string = "x" * 100000
+        self.assertIsNone(re.match(r".{%d}" % (MAXREPEAT - 1), string))
+        self.assertEqual(re.match(r".{,%d}" % (MAXREPEAT - 1), string).span(),
+                         (0, 100000))
+        self.assertIsNone(re.match(r".{%d,}?" % (MAXREPEAT - 1), string))
+        self.assertRaises(OverflowError, re.compile, r".{%d}" % MAXREPEAT)
+        self.assertRaises(OverflowError, re.compile, r".{,%d}" % MAXREPEAT)
+        self.assertRaises(OverflowError, re.compile, r".{%d,}?" % MAXREPEAT)
+
+    @cpython_only
+    def test_sre_template_invalid_group_index(self):
+        # see gh-106524
+        import _sre
+        with self.assertRaises(TypeError) as cm:
+            _sre.template("", ["", -1, ""])
+        self.assertIn("invalid template", str(cm.exception))
+        with self.assertRaises(TypeError) as cm:
+            _sre.template("", ["", (), ""])
+        self.assertIn("an integer is required", str(cm.exception))
+
+
 class ExternalTests(unittest.TestCase):
 
     def test_re_benchmarks(self):
diff --git a/Lib/test/test_readline.py b/Lib/test/test_readline.py
index 59dbef90380053..5e0e6f8dfac651 100644
--- a/Lib/test/test_readline.py
+++ b/Lib/test/test_readline.py
@@ -1,18 +1,16 @@
 """
 Very minimal unittests for parts of the readline module.
 """
-from contextlib import ExitStack
-from errno import EIO
 import locale
 import os
-import selectors
-import subprocess
 import sys
 import tempfile
+import textwrap
 import unittest
 from test.support import verbose
 from test.support.import_helper import import_module
 from test.support.os_helper import unlink, temp_dir, TESTFN
+from test.support.pty_helper import run_pty
 from test.support.script_helper import assert_python_ok
 
 # Skip tests if there is no readline module
@@ -21,7 +19,7 @@
 if hasattr(readline, "_READLINE_LIBRARY_VERSION"):
     is_editline = ("EditLine wrapper" in readline._READLINE_LIBRARY_VERSION)
 else:
-    is_editline = (readline.__doc__ and "libedit" in readline.__doc__)
+    is_editline = readline.backend == "editline"
 
 
 def setUpModule():
@@ -147,6 +145,9 @@ def test_init(self):
                                               TERM='xterm-256color')
         self.assertEqual(stdout, b'')
 
+    def test_backend(self):
+        self.assertIn(readline.backend, ("readline", "editline"))
+
     auto_history_script = """\
 import readline
 readline.set_auto_history({})
@@ -166,6 +167,25 @@ def test_auto_history_disabled(self):
         # end, so don't expect it in the output.
         self.assertIn(b"History length: 0", output)
 
+    def test_set_complete_delims(self):
+        script = textwrap.dedent("""
+            import readline
+            def complete(text, state):
+                if state == 0 and text == "$":
+                    return "$complete"
+                return None
+            if readline.backend == "editline":
+                readline.parse_and_bind(r'bind "\\t" rl_complete')
+            else:
+                readline.parse_and_bind(r'"\\t": complete')
+            readline.set_completer_delims(" \\t\\n")
+            readline.set_completer(complete)
+            print(input())
+        """)
+
+        output = run_pty(script, input=b"$\t\n")
+        self.assertIn(b"$complete", output)
+
     def test_nonascii(self):
         loc = locale.setlocale(locale.LC_CTYPE, None)
         if loc in ('C', 'POSIX'):
@@ -181,7 +201,7 @@ def test_nonascii(self):
 
         script = r"""import readline
 
-is_editline = readline.__doc__ and "libedit" in readline.__doc__
+is_editline = readline.backend == "editline"
 inserted = "[\xEFnserted]"
 macro = "|t\xEB[after]"
 set_pre_input_hook = getattr(readline, "set_pre_input_hook", None)
@@ -304,55 +324,5 @@ def test_history_size(self):
             self.assertEqual(lines[-1].strip(), b"last input")
 
 
-def run_pty(script, input=b"dummy input\r", env=None):
-    pty = import_module('pty')
-    output = bytearray()
-    [master, slave] = pty.openpty()
-    args = (sys.executable, '-c', script)
-    proc = subprocess.Popen(args, stdin=slave, stdout=slave, stderr=slave, env=env)
-    os.close(slave)
-    with ExitStack() as cleanup:
-        cleanup.enter_context(proc)
-        def terminate(proc):
-            try:
-                proc.terminate()
-            except ProcessLookupError:
-                # Workaround for Open/Net BSD bug (Issue 16762)
-                pass
-        cleanup.callback(terminate, proc)
-        cleanup.callback(os.close, master)
-        # Avoid using DefaultSelector and PollSelector. Kqueue() does not
-        # work with pseudo-terminals on OS X < 10.9 (Issue 20365) and Open
-        # BSD (Issue 20667). Poll() does not work with OS X 10.6 or 10.4
-        # either (Issue 20472). Hopefully the file descriptor is low enough
-        # to use with select().
-        sel = cleanup.enter_context(selectors.SelectSelector())
-        sel.register(master, selectors.EVENT_READ | selectors.EVENT_WRITE)
-        os.set_blocking(master, False)
-        while True:
-            for [_, events] in sel.select():
-                if events & selectors.EVENT_READ:
-                    try:
-                        chunk = os.read(master, 0x10000)
-                    except OSError as err:
-                        # Linux raises EIO when slave is closed (Issue 5380)
-                        if err.errno != EIO:
-                            raise
-                        chunk = b""
-                    if not chunk:
-                        return output
-                    output.extend(chunk)
-                if events & selectors.EVENT_WRITE:
-                    try:
-                        input = input[os.write(master, input):]
-                    except OSError as err:
-                        # Apparently EIO means the slave was closed
-                        if err.errno != EIO:
-                            raise
-                        input = b""  # Stop writing
-                    if not input:
-                        sel.modify(master, selectors.EVENT_READ)
-
-
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_regrtest.py b/Lib/test/test_regrtest.py
index ac49fbae847726..e828941f6c779d 100644
--- a/Lib/test/test_regrtest.py
+++ b/Lib/test/test_regrtest.py
@@ -5,21 +5,31 @@
 """
 
 import contextlib
+import dataclasses
 import glob
 import io
+import locale
 import os.path
 import platform
+import random
 import re
+import shlex
+import signal
 import subprocess
 import sys
 import sysconfig
 import tempfile
 import textwrap
 import unittest
-from test import libregrtest
 from test import support
-from test.support import os_helper
-from test.libregrtest import utils, setup
+from test.support import os_helper, without_optimizer
+from test.libregrtest import cmdline
+from test.libregrtest import main
+from test.libregrtest import setup
+from test.libregrtest import utils
+from test.libregrtest.filter import set_match_tests, match_test
+from test.libregrtest.result import TestStats
+from test.libregrtest.utils import normalize_test_name
 
 if not support.has_subprocess_support:
     raise unittest.SkipTest("test module requires subprocess")
@@ -31,6 +41,7 @@
 EXITCODE_BAD_TEST = 2
 EXITCODE_ENV_CHANGED = 3
 EXITCODE_NO_TESTS_RAN = 4
+EXITCODE_RERUN_FAIL = 5
 EXITCODE_INTERRUPTED = 130
 
 TEST_INTERRUPTED = textwrap.dedent("""
@@ -48,9 +59,13 @@ class ParseArgsTestCase(unittest.TestCase):
     Test regrtest's argument parsing, function _parse_args().
     """
 
+    @staticmethod
+    def parse_args(args):
+        return cmdline._parse_args(args)
+
     def checkError(self, args, msg):
         with support.captured_stderr() as err, self.assertRaises(SystemExit):
-            libregrtest._parse_args(args)
+            self.parse_args(args)
         self.assertIn(msg, err.getvalue())
 
     def test_help(self):
@@ -58,83 +73,101 @@ def test_help(self):
             with self.subTest(opt=opt):
                 with support.captured_stdout() as out, \
                      self.assertRaises(SystemExit):
-                    libregrtest._parse_args([opt])
+                    self.parse_args([opt])
                 self.assertIn('Run Python regression tests.', out.getvalue())
 
     def test_timeout(self):
-        ns = libregrtest._parse_args(['--timeout', '4.2'])
+        ns = self.parse_args(['--timeout', '4.2'])
         self.assertEqual(ns.timeout, 4.2)
+
+        # negative, zero and empty string are treated as "no timeout"
+        for value in ('-1', '0', ''):
+            with self.subTest(value=value):
+                ns = self.parse_args([f'--timeout={value}'])
+                self.assertEqual(ns.timeout, None)
+
         self.checkError(['--timeout'], 'expected one argument')
-        self.checkError(['--timeout', 'foo'], 'invalid float value')
+        self.checkError(['--timeout', 'foo'], 'invalid timeout value:')
 
     def test_wait(self):
-        ns = libregrtest._parse_args(['--wait'])
+        ns = self.parse_args(['--wait'])
         self.assertTrue(ns.wait)
 
-    def test_worker_args(self):
-        ns = libregrtest._parse_args(['--worker-args', '[[], {}]'])
-        self.assertEqual(ns.worker_args, '[[], {}]')
-        self.checkError(['--worker-args'], 'expected one argument')
-
     def test_start(self):
         for opt in '-S', '--start':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, 'foo'])
+                ns = self.parse_args([opt, 'foo'])
                 self.assertEqual(ns.start, 'foo')
                 self.checkError([opt], 'expected one argument')
 
     def test_verbose(self):
-        ns = libregrtest._parse_args(['-v'])
+        ns = self.parse_args(['-v'])
         self.assertEqual(ns.verbose, 1)
-        ns = libregrtest._parse_args(['-vvv'])
+        ns = self.parse_args(['-vvv'])
         self.assertEqual(ns.verbose, 3)
-        ns = libregrtest._parse_args(['--verbose'])
+        ns = self.parse_args(['--verbose'])
         self.assertEqual(ns.verbose, 1)
-        ns = libregrtest._parse_args(['--verbose'] * 3)
+        ns = self.parse_args(['--verbose'] * 3)
         self.assertEqual(ns.verbose, 3)
-        ns = libregrtest._parse_args([])
+        ns = self.parse_args([])
         self.assertEqual(ns.verbose, 0)
 
-    def test_verbose2(self):
-        for opt in '-w', '--verbose2':
+    def test_rerun(self):
+        for opt in '-w', '--rerun', '--verbose2':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
-                self.assertTrue(ns.verbose2)
+                ns = self.parse_args([opt])
+                self.assertTrue(ns.rerun)
 
     def test_verbose3(self):
         for opt in '-W', '--verbose3':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.verbose3)
 
     def test_quiet(self):
         for opt in '-q', '--quiet':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.quiet)
                 self.assertEqual(ns.verbose, 0)
 
     def test_slowest(self):
         for opt in '-o', '--slowest':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.print_slow)
 
     def test_header(self):
-        ns = libregrtest._parse_args(['--header'])
+        ns = self.parse_args(['--header'])
         self.assertTrue(ns.header)
 
-        ns = libregrtest._parse_args(['--verbose'])
+        ns = self.parse_args(['--verbose'])
         self.assertTrue(ns.header)
 
     def test_randomize(self):
-        for opt in '-r', '--randomize':
+        for opt in ('-r', '--randomize'):
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.randomize)
 
+        with os_helper.EnvironmentVarGuard() as env:
+            # with SOURCE_DATE_EPOCH
+            env['SOURCE_DATE_EPOCH'] = '1697839080'
+            ns = self.parse_args(['--randomize'])
+            regrtest = main.Regrtest(ns)
+            self.assertFalse(regrtest.randomize)
+            self.assertIsInstance(regrtest.random_seed, str)
+            self.assertEqual(regrtest.random_seed, '1697839080')
+
+            # without SOURCE_DATE_EPOCH
+            del env['SOURCE_DATE_EPOCH']
+            ns = self.parse_args(['--randomize'])
+            regrtest = main.Regrtest(ns)
+            self.assertTrue(regrtest.randomize)
+            self.assertIsInstance(regrtest.random_seed, int)
+
     def test_randseed(self):
-        ns = libregrtest._parse_args(['--randseed', '12345'])
+        ns = self.parse_args(['--randseed', '12345'])
         self.assertEqual(ns.random_seed, 12345)
         self.assertTrue(ns.randomize)
         self.checkError(['--randseed'], 'expected one argument')
@@ -143,7 +176,7 @@ def test_randseed(self):
     def test_fromfile(self):
         for opt in '-f', '--fromfile':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, 'foo'])
+                ns = self.parse_args([opt, 'foo'])
                 self.assertEqual(ns.fromfile, 'foo')
                 self.checkError([opt], 'expected one argument')
                 self.checkError([opt, 'foo', '-s'], "don't go together")
@@ -151,44 +184,37 @@ def test_fromfile(self):
     def test_exclude(self):
         for opt in '-x', '--exclude':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.exclude)
 
     def test_single(self):
         for opt in '-s', '--single':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.single)
                 self.checkError([opt, '-f', 'foo'], "don't go together")
 
-    def test_ignore(self):
-        for opt in '-i', '--ignore':
+    def test_match(self):
+        for opt in '-m', '--match':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, 'pattern'])
-                self.assertEqual(ns.ignore_tests, ['pattern'])
+                ns = self.parse_args([opt, 'pattern'])
+                self.assertEqual(ns.match_tests, [('pattern', True)])
                 self.checkError([opt], 'expected one argument')
 
-        self.addCleanup(os_helper.unlink, os_helper.TESTFN)
-        with open(os_helper.TESTFN, "w") as fp:
-            print('matchfile1', file=fp)
-            print('matchfile2', file=fp)
-
-        filename = os.path.abspath(os_helper.TESTFN)
-        ns = libregrtest._parse_args(['-m', 'match',
-                                      '--ignorefile', filename])
-        self.assertEqual(ns.ignore_tests,
-                         ['matchfile1', 'matchfile2'])
-
-    def test_match(self):
-        for opt in '-m', '--match':
+        for opt in '-i', '--ignore':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, 'pattern'])
-                self.assertEqual(ns.match_tests, ['pattern'])
+                ns = self.parse_args([opt, 'pattern'])
+                self.assertEqual(ns.match_tests, [('pattern', False)])
                 self.checkError([opt], 'expected one argument')
 
-        ns = libregrtest._parse_args(['-m', 'pattern1',
-                                      '-m', 'pattern2'])
-        self.assertEqual(ns.match_tests, ['pattern1', 'pattern2'])
+        ns = self.parse_args(['-m', 'pattern1', '-m', 'pattern2'])
+        self.assertEqual(ns.match_tests, [('pattern1', True), ('pattern2', True)])
+
+        ns = self.parse_args(['-m', 'pattern1', '-i', 'pattern2'])
+        self.assertEqual(ns.match_tests, [('pattern1', True), ('pattern2', False)])
+
+        ns = self.parse_args(['-i', 'pattern1', '-m', 'pattern2'])
+        self.assertEqual(ns.match_tests, [('pattern1', False), ('pattern2', True)])
 
         self.addCleanup(os_helper.unlink, os_helper.TESTFN)
         with open(os_helper.TESTFN, "w") as fp:
@@ -196,73 +222,76 @@ def test_match(self):
             print('matchfile2', file=fp)
 
         filename = os.path.abspath(os_helper.TESTFN)
-        ns = libregrtest._parse_args(['-m', 'match',
-                                      '--matchfile', filename])
+        ns = self.parse_args(['-m', 'match', '--matchfile', filename])
+        self.assertEqual(ns.match_tests,
+                         [('match', True), ('matchfile1', True), ('matchfile2', True)])
+
+        ns = self.parse_args(['-i', 'match', '--ignorefile', filename])
         self.assertEqual(ns.match_tests,
-                         ['match', 'matchfile1', 'matchfile2'])
+                         [('match', False), ('matchfile1', False), ('matchfile2', False)])
 
     def test_failfast(self):
         for opt in '-G', '--failfast':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, '-v'])
+                ns = self.parse_args([opt, '-v'])
                 self.assertTrue(ns.failfast)
-                ns = libregrtest._parse_args([opt, '-W'])
+                ns = self.parse_args([opt, '-W'])
                 self.assertTrue(ns.failfast)
                 self.checkError([opt], '-G/--failfast needs either -v or -W')
 
     def test_use(self):
         for opt in '-u', '--use':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, 'gui,network'])
+                ns = self.parse_args([opt, 'gui,network'])
                 self.assertEqual(ns.use_resources, ['gui', 'network'])
 
-                ns = libregrtest._parse_args([opt, 'gui,none,network'])
+                ns = self.parse_args([opt, 'gui,none,network'])
                 self.assertEqual(ns.use_resources, ['network'])
 
-                expected = list(libregrtest.ALL_RESOURCES)
+                expected = list(cmdline.ALL_RESOURCES)
                 expected.remove('gui')
-                ns = libregrtest._parse_args([opt, 'all,-gui'])
+                ns = self.parse_args([opt, 'all,-gui'])
                 self.assertEqual(ns.use_resources, expected)
                 self.checkError([opt], 'expected one argument')
                 self.checkError([opt, 'foo'], 'invalid resource')
 
                 # all + a resource not part of "all"
-                ns = libregrtest._parse_args([opt, 'all,tzdata'])
+                ns = self.parse_args([opt, 'all,tzdata'])
                 self.assertEqual(ns.use_resources,
-                                 list(libregrtest.ALL_RESOURCES) + ['tzdata'])
+                                 list(cmdline.ALL_RESOURCES) + ['tzdata'])
 
                 # test another resource which is not part of "all"
-                ns = libregrtest._parse_args([opt, 'extralargefile'])
+                ns = self.parse_args([opt, 'extralargefile'])
                 self.assertEqual(ns.use_resources, ['extralargefile'])
 
     def test_memlimit(self):
         for opt in '-M', '--memlimit':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, '4G'])
+                ns = self.parse_args([opt, '4G'])
                 self.assertEqual(ns.memlimit, '4G')
                 self.checkError([opt], 'expected one argument')
 
     def test_testdir(self):
-        ns = libregrtest._parse_args(['--testdir', 'foo'])
+        ns = self.parse_args(['--testdir', 'foo'])
         self.assertEqual(ns.testdir, os.path.join(os_helper.SAVEDCWD, 'foo'))
         self.checkError(['--testdir'], 'expected one argument')
 
     def test_runleaks(self):
         for opt in '-L', '--runleaks':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.runleaks)
 
     def test_huntrleaks(self):
         for opt in '-R', '--huntrleaks':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, ':'])
+                ns = self.parse_args([opt, ':'])
                 self.assertEqual(ns.huntrleaks, (5, 4, 'reflog.txt'))
-                ns = libregrtest._parse_args([opt, '6:'])
+                ns = self.parse_args([opt, '6:'])
                 self.assertEqual(ns.huntrleaks, (6, 4, 'reflog.txt'))
-                ns = libregrtest._parse_args([opt, ':3'])
+                ns = self.parse_args([opt, ':3'])
                 self.assertEqual(ns.huntrleaks, (5, 3, 'reflog.txt'))
-                ns = libregrtest._parse_args([opt, '6:3:leaks.log'])
+                ns = self.parse_args([opt, '6:3:leaks.log'])
                 self.assertEqual(ns.huntrleaks, (6, 3, 'leaks.log'))
                 self.checkError([opt], 'expected one argument')
                 self.checkError([opt, '6'],
@@ -273,23 +302,33 @@ def test_huntrleaks(self):
     def test_multiprocess(self):
         for opt in '-j', '--multiprocess':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, '2'])
+                ns = self.parse_args([opt, '2'])
                 self.assertEqual(ns.use_mp, 2)
                 self.checkError([opt], 'expected one argument')
                 self.checkError([opt, 'foo'], 'invalid int value')
-                self.checkError([opt, '2', '-T'], "don't go together")
-                self.checkError([opt, '0', '-T'], "don't go together")
 
-    def test_coverage(self):
+    def test_coverage_sequential(self):
+        for opt in '-T', '--coverage':
+            with self.subTest(opt=opt):
+                with support.captured_stderr() as stderr:
+                    ns = self.parse_args([opt])
+                self.assertTrue(ns.trace)
+                self.assertIn(
+                    "collecting coverage without -j is imprecise",
+                    stderr.getvalue(),
+                )
+
+    @unittest.skipUnless(support.Py_DEBUG, 'need a debug build')
+    def test_coverage_mp(self):
         for opt in '-T', '--coverage':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt, '-j1'])
                 self.assertTrue(ns.trace)
 
     def test_coverdir(self):
         for opt in '-D', '--coverdir':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, 'foo'])
+                ns = self.parse_args([opt, 'foo'])
                 self.assertEqual(ns.coverdir,
                                  os.path.join(os_helper.SAVEDCWD, 'foo'))
                 self.checkError([opt], 'expected one argument')
@@ -297,13 +336,13 @@ def test_coverdir(self):
     def test_nocoverdir(self):
         for opt in '-N', '--nocoverdir':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertIsNone(ns.coverdir)
 
     def test_threshold(self):
         for opt in '-t', '--threshold':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt, '1000'])
+                ns = self.parse_args([opt, '1000'])
                 self.assertEqual(ns.threshold, 1000)
                 self.checkError([opt], 'expected one argument')
                 self.checkError([opt, 'foo'], 'invalid int value')
@@ -312,7 +351,7 @@ def test_nowindows(self):
         for opt in '-n', '--nowindows':
             with self.subTest(opt=opt):
                 with contextlib.redirect_stderr(io.StringIO()) as stderr:
-                    ns = libregrtest._parse_args([opt])
+                    ns = self.parse_args([opt])
                 self.assertTrue(ns.nowindows)
                 err = stderr.getvalue()
                 self.assertIn('the --nowindows (-n) option is deprecated', err)
@@ -320,39 +359,39 @@ def test_nowindows(self):
     def test_forever(self):
         for opt in '-F', '--forever':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                ns = self.parse_args([opt])
                 self.assertTrue(ns.forever)
 
     def test_unrecognized_argument(self):
         self.checkError(['--xxx'], 'usage:')
 
     def test_long_option__partial(self):
-        ns = libregrtest._parse_args(['--qui'])
+        ns = self.parse_args(['--qui'])
         self.assertTrue(ns.quiet)
         self.assertEqual(ns.verbose, 0)
 
     def test_two_options(self):
-        ns = libregrtest._parse_args(['--quiet', '--exclude'])
+        ns = self.parse_args(['--quiet', '--exclude'])
         self.assertTrue(ns.quiet)
         self.assertEqual(ns.verbose, 0)
         self.assertTrue(ns.exclude)
 
     def test_option_with_empty_string_value(self):
-        ns = libregrtest._parse_args(['--start', ''])
+        ns = self.parse_args(['--start', ''])
         self.assertEqual(ns.start, '')
 
     def test_arg(self):
-        ns = libregrtest._parse_args(['foo'])
+        ns = self.parse_args(['foo'])
         self.assertEqual(ns.args, ['foo'])
 
     def test_option_and_arg(self):
-        ns = libregrtest._parse_args(['--quiet', 'foo'])
+        ns = self.parse_args(['--quiet', 'foo'])
         self.assertTrue(ns.quiet)
         self.assertEqual(ns.verbose, 0)
         self.assertEqual(ns.args, ['foo'])
 
     def test_arg_option_arg(self):
-        ns = libregrtest._parse_args(['test_unaryop', '-v', 'test_binop'])
+        ns = self.parse_args(['test_unaryop', '-v', 'test_binop'])
         self.assertEqual(ns.verbose, 1)
         self.assertEqual(ns.args, ['test_unaryop', 'test_binop'])
 
@@ -360,6 +399,69 @@ def test_unknown_option(self):
         self.checkError(['--unknown-option'],
                         'unrecognized arguments: --unknown-option')
 
+    def check_ci_mode(self, args, use_resources, rerun=True):
+        ns = cmdline._parse_args(args)
+
+        # Check Regrtest attributes which are more reliable than Namespace
+        # which has an unclear API
+        with os_helper.EnvironmentVarGuard() as env:
+            # Ignore SOURCE_DATE_EPOCH env var if it's set
+            if 'SOURCE_DATE_EPOCH' in env:
+                del env['SOURCE_DATE_EPOCH']
+
+            regrtest = main.Regrtest(ns)
+
+        self.assertEqual(regrtest.num_workers, -1)
+        self.assertEqual(regrtest.want_rerun, rerun)
+        self.assertTrue(regrtest.randomize)
+        self.assertIsInstance(regrtest.random_seed, int)
+        self.assertTrue(regrtest.fail_env_changed)
+        self.assertTrue(regrtest.print_slowest)
+        self.assertTrue(regrtest.output_on_failure)
+        self.assertEqual(sorted(regrtest.use_resources), sorted(use_resources))
+        return regrtest
+
+    def test_fast_ci(self):
+        args = ['--fast-ci']
+        use_resources = sorted(cmdline.ALL_RESOURCES)
+        use_resources.remove('cpu')
+        regrtest = self.check_ci_mode(args, use_resources)
+        self.assertEqual(regrtest.timeout, 10 * 60)
+
+    def test_fast_ci_python_cmd(self):
+        args = ['--fast-ci', '--python', 'python -X dev']
+        use_resources = sorted(cmdline.ALL_RESOURCES)
+        use_resources.remove('cpu')
+        regrtest = self.check_ci_mode(args, use_resources, rerun=False)
+        self.assertEqual(regrtest.timeout, 10 * 60)
+        self.assertEqual(regrtest.python_cmd, ('python', '-X', 'dev'))
+
+    def test_fast_ci_resource(self):
+        # it should be possible to override resources individually
+        args = ['--fast-ci', '-u-network']
+        use_resources = sorted(cmdline.ALL_RESOURCES)
+        use_resources.remove('cpu')
+        use_resources.remove('network')
+        self.check_ci_mode(args, use_resources)
+
+    def test_slow_ci(self):
+        args = ['--slow-ci']
+        use_resources = sorted(cmdline.ALL_RESOURCES)
+        regrtest = self.check_ci_mode(args, use_resources)
+        self.assertEqual(regrtest.timeout, 20 * 60)
+
+    def test_dont_add_python_opts(self):
+        args = ['--dont-add-python-opts']
+        ns = cmdline._parse_args(args)
+        self.assertFalse(ns._add_python_opts)
+
+
+@dataclasses.dataclass(slots=True)
+class Rerun:
+    name: str
+    match: str | None
+    success: bool
+
 
 class BaseTestCase(unittest.TestCase):
     TEST_UNIQUE_ID = 1
@@ -408,8 +510,12 @@ def regex_search(self, regex, output):
             self.fail("%r not found in %r" % (regex, output))
         return match
 
-    def check_line(self, output, regex):
-        regex = re.compile(r'^' + regex, re.MULTILINE)
+    def check_line(self, output, pattern, full=False, regex=True):
+        if not regex:
+            pattern = re.escape(pattern)
+        if full:
+            pattern += '\n'
+        regex = re.compile(r'^' + pattern, re.MULTILINE)
         self.assertRegex(output, regex)
 
     def parse_executed_tests(self, output):
@@ -418,29 +524,47 @@ def parse_executed_tests(self, output):
         parser = re.finditer(regex, output, re.MULTILINE)
         return list(match.group(1) for match in parser)
 
-    def check_executed_tests(self, output, tests, skipped=(), failed=(),
+    def check_executed_tests(self, output, tests, *, stats,
+                             skipped=(), failed=(),
                              env_changed=(), omitted=(),
-                             rerun={}, no_test_ran=(),
-                             randomize=False, interrupted=False,
-                             fail_env_changed=False):
+                             rerun=None, run_no_tests=(),
+                             resource_denied=(),
+                             randomize=False, parallel=False, interrupted=False,
+                             fail_env_changed=False,
+                             forever=False, filtered=False):
         if isinstance(tests, str):
             tests = [tests]
         if isinstance(skipped, str):
             skipped = [skipped]
+        if isinstance(resource_denied, str):
+            resource_denied = [resource_denied]
         if isinstance(failed, str):
             failed = [failed]
         if isinstance(env_changed, str):
             env_changed = [env_changed]
         if isinstance(omitted, str):
             omitted = [omitted]
-        if isinstance(no_test_ran, str):
-            no_test_ran = [no_test_ran]
+        if isinstance(run_no_tests, str):
+            run_no_tests = [run_no_tests]
+        if isinstance(stats, int):
+            stats = TestStats(stats)
+        if parallel:
+            randomize = True
+
+        rerun_failed = []
+        if rerun is not None and not env_changed:
+            failed = [rerun.name]
+            if not rerun.success:
+                rerun_failed.append(rerun.name)
 
         executed = self.parse_executed_tests(output)
+        total_tests = list(tests)
+        if rerun is not None:
+            total_tests.append(rerun.name)
         if randomize:
-            self.assertEqual(set(executed), set(tests), output)
+            self.assertEqual(set(executed), set(total_tests), output)
         else:
-            self.assertEqual(executed, tests, output)
+            self.assertEqual(executed, total_tests, output)
 
         def plural(count):
             return 's' if count != 1 else ''
@@ -456,12 +580,17 @@ def list_regex(line_format, tests):
             regex = list_regex('%s test%s skipped', skipped)
             self.check_line(output, regex)
 
+        if resource_denied:
+            regex = list_regex(r'%s test%s skipped \(resource denied\)', resource_denied)
+            self.check_line(output, regex)
+
         if failed:
             regex = list_regex('%s test%s failed', failed)
             self.check_line(output, regex)
 
         if env_changed:
-            regex = list_regex('%s test%s altered the execution environment',
+            regex = list_regex(r'%s test%s altered the execution environment '
+                               r'\(env changed\)',
                                env_changed)
             self.check_line(output, regex)
 
@@ -469,73 +598,120 @@ def list_regex(line_format, tests):
             regex = list_regex('%s test%s omitted', omitted)
             self.check_line(output, regex)
 
-        if rerun:
-            regex = list_regex('%s re-run test%s', rerun.keys())
+        if rerun is not None:
+            regex = list_regex('%s re-run test%s', [rerun.name])
             self.check_line(output, regex)
-            regex = LOG_PREFIX + r"Re-running failed tests in verbose mode"
+            regex = LOG_PREFIX + r"Re-running 1 failed tests in verbose mode"
+            self.check_line(output, regex)
+            regex = fr"Re-running {rerun.name} in verbose mode"
+            if rerun.match:
+                regex = fr"{regex} \(matching: {rerun.match}\)"
             self.check_line(output, regex)
-            for name, match in rerun.items():
-                regex = LOG_PREFIX + f"Re-running {name} in verbose mode \\(matching: {match}\\)"
-                self.check_line(output, regex)
 
-        if no_test_ran:
-            regex = list_regex('%s test%s run no tests', no_test_ran)
+        if run_no_tests:
+            regex = list_regex('%s test%s run no tests', run_no_tests)
             self.check_line(output, regex)
 
-        good = (len(tests) - len(skipped) - len(failed)
-                - len(omitted) - len(env_changed) - len(no_test_ran))
+        good = (len(tests) - len(skipped) - len(resource_denied) - len(failed)
+                - len(omitted) - len(env_changed) - len(run_no_tests))
         if good:
-            regex = r'%s test%s OK\.$' % (good, plural(good))
-            if not skipped and not failed and good > 1:
+            regex = r'%s test%s OK\.' % (good, plural(good))
+            if not skipped and not failed and (rerun is None or rerun.success) and good > 1:
                 regex = 'All %s' % regex
-            self.check_line(output, regex)
+            self.check_line(output, regex, full=True)
 
         if interrupted:
             self.check_line(output, 'Test suite interrupted by signal SIGINT.')
 
-        result = []
+        # Total tests
+        text = f'run={stats.tests_run:,}'
+        if filtered:
+            text = fr'{text} \(filtered\)'
+        parts = [text]
+        if stats.failures:
+            parts.append(f'failures={stats.failures:,}')
+        if stats.skipped:
+            parts.append(f'skipped={stats.skipped:,}')
+        line = fr'Total tests: {" ".join(parts)}'
+        self.check_line(output, line, full=True)
+
+        # Total test files
+        run = len(total_tests) - len(resource_denied)
+        if rerun is not None:
+            total_failed = len(rerun_failed)
+            total_rerun = 1
+        else:
+            total_failed = len(failed)
+            total_rerun = 0
+        if interrupted:
+            run = 0
+        text = f'run={run}'
+        if not forever:
+            text = f'{text}/{len(tests)}'
+        if filtered:
+            text = fr'{text} \(filtered\)'
+        report = [text]
+        for name, ntest in (
+            ('failed', total_failed),
+            ('env_changed', len(env_changed)),
+            ('skipped', len(skipped)),
+            ('resource_denied', len(resource_denied)),
+            ('rerun', total_rerun),
+            ('run_no_tests', len(run_no_tests)),
+        ):
+            if ntest:
+                report.append(f'{name}={ntest}')
+        line = fr'Total test files: {" ".join(report)}'
+        self.check_line(output, line, full=True)
+
+        # Result
+        state = []
         if failed:
-            result.append('FAILURE')
+            state.append('FAILURE')
         elif fail_env_changed and env_changed:
-            result.append('ENV CHANGED')
+            state.append('ENV CHANGED')
         if interrupted:
-            result.append('INTERRUPTED')
-        if not any((good, result, failed, interrupted, skipped,
+            state.append('INTERRUPTED')
+        if not any((good, failed, interrupted, skipped,
                     env_changed, fail_env_changed)):
-            result.append("NO TESTS RAN")
-        elif not result:
-            result.append('SUCCESS')
-        result = ', '.join(result)
-        if rerun:
-            self.check_line(output, 'Tests result: FAILURE')
-            result = 'FAILURE then %s' % result
-
-        self.check_line(output, 'Tests result: %s' % result)
-
-    def parse_random_seed(self, output):
-        match = self.regex_search(r'Using random seed ([0-9]+)', output)
-        randseed = int(match.group(1))
-        self.assertTrue(0 <= randseed <= 10000000, randseed)
-        return randseed
+            state.append("NO TESTS RAN")
+        elif not state:
+            state.append('SUCCESS')
+        state = ', '.join(state)
+        if rerun is not None:
+            new_state = 'SUCCESS' if rerun.success else 'FAILURE'
+            state = f'{state} then {new_state}'
+        self.check_line(output, f'Result: {state}', full=True)
+
+    def parse_random_seed(self, output: str) -> str:
+        match = self.regex_search(r'Using random seed: (.*)', output)
+        return match.group(1)
 
     def run_command(self, args, input=None, exitcode=0, **kw):
         if not input:
             input = ''
         if 'stderr' not in kw:
             kw['stderr'] = subprocess.STDOUT
+
+        env = kw.pop('env', None)
+        if env is None:
+            env = dict(os.environ)
+            env.pop('SOURCE_DATE_EPOCH', None)
+
         proc = subprocess.run(args,
-                              universal_newlines=True,
+                              text=True,
                               input=input,
                               stdout=subprocess.PIPE,
+                              env=env,
                               **kw)
         if proc.returncode != exitcode:
-            msg = ("Command %s failed with exit code %s\n"
+            msg = ("Command %s failed with exit code %s, but exit code %s expected!\n"
                    "\n"
                    "stdout:\n"
                    "---\n"
                    "%s\n"
                    "---\n"
-                   % (str(args), proc.returncode, proc.stdout))
+                   % (str(args), proc.returncode, exitcode, proc.stdout))
             if proc.stderr:
                 msg += ("\n"
                         "stderr:\n"
@@ -547,7 +723,11 @@ def run_command(self, args, input=None, exitcode=0, **kw):
         return proc
 
     def run_python(self, args, **kw):
-        args = [sys.executable, '-X', 'faulthandler', '-I', *args]
+        extraargs = []
+        if 'uops' in sys._xoptions:
+            # Pass -X uops along
+            extraargs.extend(['-X', 'uops'])
+        args = [sys.executable, *extraargs, '-X', 'faulthandler', '-I', *args]
         proc = self.run_command(args, **kw)
         return proc.stdout
 
@@ -598,11 +778,14 @@ def setUp(self):
             self.regrtest_args.append('-n')
 
     def check_output(self, output):
-        self.parse_random_seed(output)
-        self.check_executed_tests(output, self.tests, randomize=True)
+        randseed = self.parse_random_seed(output)
+        self.assertTrue(randseed.isdigit(), randseed)
 
-    def run_tests(self, args):
-        output = self.run_python(args)
+        self.check_executed_tests(output, self.tests,
+                                  randomize=True, stats=len(self.tests))
+
+    def run_tests(self, args, env=None):
+        output = self.run_python(args, env=env)
         self.check_output(output)
 
     def test_script_regrtest(self):
@@ -643,14 +826,6 @@ def test_script_autotest(self):
         args = [*self.python_args, script, *self.regrtest_args, *self.tests]
         self.run_tests(args)
 
-    @unittest.skipUnless(sysconfig.is_python_build(),
-                         'run_tests.py script is not installed')
-    def test_tools_script_run_tests(self):
-        # Tools/scripts/run_tests.py
-        script = os.path.join(ROOT_DIR, 'Tools', 'scripts', 'run_tests.py')
-        args = [script, *self.regrtest_args, *self.tests]
-        self.run_tests(args)
-
     def run_batch(self, *args):
         proc = self.run_command(args)
         self.check_output(proc.stdout)
@@ -699,6 +874,40 @@ def run_tests(self, *testargs, **kw):
         cmdargs = ['-m', 'test', '--testdir=%s' % self.tmptestdir, *testargs]
         return self.run_python(cmdargs, **kw)
 
+    def test_success(self):
+        code = textwrap.dedent("""
+            import unittest
+
+            class PassingTests(unittest.TestCase):
+                def test_test1(self):
+                    pass
+
+                def test_test2(self):
+                    pass
+
+                def test_test3(self):
+                    pass
+        """)
+        tests = [self.create_test(f'ok{i}', code=code) for i in range(1, 6)]
+
+        output = self.run_tests(*tests)
+        self.check_executed_tests(output, tests,
+                                  stats=3 * len(tests))
+
+    def test_skip(self):
+        code = textwrap.dedent("""
+            import unittest
+            raise unittest.SkipTest("nope")
+        """)
+        test_ok = self.create_test('ok')
+        test_skip = self.create_test('skip', code=code)
+        tests = [test_ok, test_skip]
+
+        output = self.run_tests(*tests)
+        self.check_executed_tests(output, tests,
+                                  skipped=[test_skip],
+                                  stats=1)
+
     def test_failing_test(self):
         # test a failing test
         code = textwrap.dedent("""
@@ -713,7 +922,8 @@ def test_failing(self):
         tests = [test_ok, test_failing]
 
         output = self.run_tests(*tests, exitcode=EXITCODE_BAD_TEST)
-        self.check_executed_tests(output, tests, failed=test_failing)
+        self.check_executed_tests(output, tests, failed=test_failing,
+                                  stats=TestStats(2, 1))
 
     def test_resources(self):
         # test -u command line option
@@ -732,17 +942,19 @@ def test_pass(self):
 
         # -u all: 2 resources enabled
         output = self.run_tests('-u', 'all', *test_names)
-        self.check_executed_tests(output, test_names)
+        self.check_executed_tests(output, test_names, stats=2)
 
         # -u audio: 1 resource enabled
         output = self.run_tests('-uaudio', *test_names)
         self.check_executed_tests(output, test_names,
-                                  skipped=tests['network'])
+                                  resource_denied=tests['network'],
+                                  stats=1)
 
         # no option: 0 resources enabled
-        output = self.run_tests(*test_names)
+        output = self.run_tests(*test_names, exitcode=EXITCODE_NO_TESTS_RAN)
         self.check_executed_tests(output, test_names,
-                                  skipped=test_names)
+                                  resource_denied=test_names,
+                                  stats=0)
 
     def test_random(self):
         # test -r and --randseed command line option
@@ -759,7 +971,7 @@ def test_random(self):
         test_random = int(match.group(1))
 
         # try to reproduce with the random seed
-        output = self.run_tests('-r', '--randseed=%s' % randseed, test,
+        output = self.run_tests('-r', f'--randseed={randseed}', test,
                                 exitcode=EXITCODE_NO_TESTS_RAN)
         randseed2 = self.parse_random_seed(output)
         self.assertEqual(randseed2, randseed)
@@ -768,6 +980,35 @@ def test_random(self):
         test_random2 = int(match.group(1))
         self.assertEqual(test_random2, test_random)
 
+        # check that random.seed is used by default
+        output = self.run_tests(test, exitcode=EXITCODE_NO_TESTS_RAN)
+        randseed = self.parse_random_seed(output)
+        self.assertTrue(randseed.isdigit(), randseed)
+
+        # check SOURCE_DATE_EPOCH (integer)
+        timestamp = '1697839080'
+        env = dict(os.environ, SOURCE_DATE_EPOCH=timestamp)
+        output = self.run_tests('-r', test, exitcode=EXITCODE_NO_TESTS_RAN,
+                                env=env)
+        randseed = self.parse_random_seed(output)
+        self.assertEqual(randseed, timestamp)
+        self.check_line(output, 'TESTRANDOM: 520')
+
+        # check SOURCE_DATE_EPOCH (string)
+        env = dict(os.environ, SOURCE_DATE_EPOCH='XYZ')
+        output = self.run_tests('-r', test, exitcode=EXITCODE_NO_TESTS_RAN,
+                                env=env)
+        randseed = self.parse_random_seed(output)
+        self.assertEqual(randseed, 'XYZ')
+        self.check_line(output, 'TESTRANDOM: 22')
+
+        # check SOURCE_DATE_EPOCH (empty string): ignore the env var
+        env = dict(os.environ, SOURCE_DATE_EPOCH='')
+        output = self.run_tests('-r', test, exitcode=EXITCODE_NO_TESTS_RAN,
+                                env=env)
+        randseed = self.parse_random_seed(output)
+        self.assertTrue(randseed.isdigit(), randseed)
+
     def test_fromfile(self):
         # test --fromfile
         tests = [self.create_test() for index in range(5)]
@@ -790,7 +1031,8 @@ def test_fromfile(self):
                 previous = name
 
         output = self.run_tests('--fromfile', filename)
-        self.check_executed_tests(output, tests)
+        stats = len(tests)
+        self.check_executed_tests(output, tests, stats=stats)
 
         # test format '[2/7] test_opcodes'
         with open(filename, "w") as fp:
@@ -798,7 +1040,7 @@ def test_fromfile(self):
                 print("[%s/%s] %s" % (index, len(tests), name), file=fp)
 
         output = self.run_tests('--fromfile', filename)
-        self.check_executed_tests(output, tests)
+        self.check_executed_tests(output, tests, stats=stats)
 
         # test format 'test_opcodes'
         with open(filename, "w") as fp:
@@ -806,7 +1048,7 @@ def test_fromfile(self):
                 print(name, file=fp)
 
         output = self.run_tests('--fromfile', filename)
-        self.check_executed_tests(output, tests)
+        self.check_executed_tests(output, tests, stats=stats)
 
         # test format 'Lib/test/test_opcodes.py'
         with open(filename, "w") as fp:
@@ -814,20 +1056,20 @@ def test_fromfile(self):
                 print('Lib/test/%s.py' % name, file=fp)
 
         output = self.run_tests('--fromfile', filename)
-        self.check_executed_tests(output, tests)
+        self.check_executed_tests(output, tests, stats=stats)
 
     def test_interrupted(self):
         code = TEST_INTERRUPTED
         test = self.create_test('sigint', code=code)
         output = self.run_tests(test, exitcode=EXITCODE_INTERRUPTED)
         self.check_executed_tests(output, test, omitted=test,
-                                  interrupted=True)
+                                  interrupted=True, stats=0)
 
     def test_slowest(self):
         # test --slowest
         tests = [self.create_test() for index in range(3)]
         output = self.run_tests("--slowest", *tests)
-        self.check_executed_tests(output, tests)
+        self.check_executed_tests(output, tests, stats=len(tests))
         regex = ('10 slowest tests:\n'
                  '(?:- %s: .*\n){%s}'
                  % (self.TESTNAME_REGEX, len(tests)))
@@ -846,7 +1088,8 @@ def test_slowest_interrupted(self):
                     args = ("--slowest", test)
                 output = self.run_tests(*args, exitcode=EXITCODE_INTERRUPTED)
                 self.check_executed_tests(output, test,
-                                          omitted=test, interrupted=True)
+                                          omitted=test, interrupted=True,
+                                          stats=0)
 
                 regex = ('10 slowest tests:\n')
                 self.check_line(output, regex)
@@ -855,7 +1098,7 @@ def test_coverage(self):
         # test --coverage
         test = self.create_test('coverage')
         output = self.run_tests("--coverage", test)
-        self.check_executed_tests(output, [test])
+        self.check_executed_tests(output, [test], stats=1)
         regex = (r'lines +cov% +module +\(path\)\n'
                  r'(?: *[0-9]+ *[0-9]{1,2}% *[^ ]+ +\([^)]+\)+)+')
         self.check_line(output, regex)
@@ -884,18 +1127,36 @@ def test_run(self):
                         builtins.__dict__['RUN'] = 1
         """)
         test = self.create_test('forever', code=code)
-        output = self.run_tests('--forever', test, exitcode=EXITCODE_BAD_TEST)
-        self.check_executed_tests(output, [test]*3, failed=test)
 
-    def check_leak(self, code, what):
+        # --forever
+        output = self.run_tests('--forever', test, exitcode=EXITCODE_BAD_TEST)
+        self.check_executed_tests(output, [test]*3, failed=test,
+                                  stats=TestStats(3, 1),
+                                  forever=True)
+
+        # --forever --rerun
+        output = self.run_tests('--forever', '--rerun', test, exitcode=0)
+        self.check_executed_tests(output, [test]*3,
+                                  rerun=Rerun(test,
+                                              match='test_run',
+                                              success=True),
+                                  stats=TestStats(4, 1),
+                                  forever=True)
+
+    @without_optimizer
+    def check_leak(self, code, what, *, run_workers=False):
         test = self.create_test('huntrleaks', code=code)
 
         filename = 'reflog.txt'
         self.addCleanup(os_helper.unlink, filename)
-        output = self.run_tests('--huntrleaks', '3:3:', test,
+        cmd = ['--huntrleaks', '3:3:']
+        if run_workers:
+            cmd.append('-j1')
+        cmd.append(test)
+        output = self.run_tests(*cmd,
                                 exitcode=EXITCODE_BAD_TEST,
                                 stderr=subprocess.STDOUT)
-        self.check_executed_tests(output, [test], failed=test)
+        self.check_executed_tests(output, [test], failed=test, stats=1)
 
         line = 'beginning 6 repetitions\n123456\n......\n'
         self.check_line(output, re.escape(line))
@@ -908,7 +1169,7 @@ def check_leak(self, code, what):
             self.assertIn(line2, reflog)
 
     @unittest.skipUnless(support.Py_DEBUG, 'need a debug build')
-    def test_huntrleaks(self):
+    def check_huntrleaks(self, *, run_workers: bool):
         # test --huntrleaks
         code = textwrap.dedent("""
             import unittest
@@ -919,7 +1180,13 @@ class RefLeakTest(unittest.TestCase):
                 def test_leak(self):
                     GLOBAL_LIST.append(object())
         """)
-        self.check_leak(code, 'references')
+        self.check_leak(code, 'references', run_workers=run_workers)
+
+    def test_huntrleaks(self):
+        self.check_huntrleaks(run_workers=False)
+
+    def test_huntrleaks_mp(self):
+        self.check_huntrleaks(run_workers=True)
 
     @unittest.skipUnless(support.Py_DEBUG, 'need a debug build')
     def test_huntrleaks_fd_leak(self):
@@ -977,7 +1244,7 @@ def test_crashed(self):
         tests = [crash_test]
         output = self.run_tests("-j2", *tests, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, tests, failed=crash_test,
-                                  randomize=True)
+                                  parallel=True, stats=0)
 
     def parse_methods(self, output):
         regex = re.compile("^(test[^ ]+).*ok$", flags=re.MULTILINE)
@@ -997,8 +1264,6 @@ def test_method3(self):
                 def test_method4(self):
                     pass
         """)
-        all_methods = ['test_method1', 'test_method2',
-                       'test_method3', 'test_method4']
         testname = self.create_test(code=code)
 
         # only run a subset
@@ -1072,13 +1337,23 @@ def test_env_changed(self):
 
         # don't fail by default
         output = self.run_tests(testname)
-        self.check_executed_tests(output, [testname], env_changed=testname)
+        self.check_executed_tests(output, [testname],
+                                  env_changed=testname, stats=1)
 
         # fail with --fail-env-changed
         output = self.run_tests("--fail-env-changed", testname,
                                 exitcode=EXITCODE_ENV_CHANGED)
         self.check_executed_tests(output, [testname], env_changed=testname,
-                                  fail_env_changed=True)
+                                  fail_env_changed=True, stats=1)
+
+        # rerun
+        output = self.run_tests("--rerun", testname)
+        self.check_executed_tests(output, [testname],
+                                  env_changed=testname,
+                                  rerun=Rerun(testname,
+                                              match=None,
+                                              success=True),
+                                  stats=2)
 
     def test_rerun_fail(self):
         # FAILURE then FAILURE
@@ -1095,30 +1370,55 @@ def test_fail_always(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, [testname],
-                                  failed=testname, rerun={testname: "test_fail_always"})
+                                  rerun=Rerun(testname,
+                                              "test_fail_always",
+                                              success=False),
+                                  stats=TestStats(3, 2))
 
     def test_rerun_success(self):
         # FAILURE then SUCCESS
-        code = textwrap.dedent("""
-            import builtins
+        marker_filename = os.path.abspath("regrtest_marker_filename")
+        self.addCleanup(os_helper.unlink, marker_filename)
+        self.assertFalse(os.path.exists(marker_filename))
+
+        code = textwrap.dedent(f"""
+            import os.path
             import unittest
 
+            marker_filename = {marker_filename!r}
+
             class Tests(unittest.TestCase):
                 def test_succeed(self):
                     return
 
                 def test_fail_once(self):
-                    if not hasattr(builtins, '_test_failed'):
-                        builtins._test_failed = True
+                    if not os.path.exists(marker_filename):
+                        open(marker_filename, "w").close()
                         self.fail("bug")
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=0)
+        # FAILURE then SUCCESS => exit code 0
+        output = self.run_tests("--rerun", testname, exitcode=0)
+        self.check_executed_tests(output, [testname],
+                                  rerun=Rerun(testname,
+                                              match="test_fail_once",
+                                              success=True),
+                                  stats=TestStats(3, 1))
+        os_helper.unlink(marker_filename)
+
+        # with --fail-rerun, exit code EXITCODE_RERUN_FAIL
+        # on "FAILURE then SUCCESS" state.
+        output = self.run_tests("--rerun", "--fail-rerun", testname,
+                                exitcode=EXITCODE_RERUN_FAIL)
         self.check_executed_tests(output, [testname],
-                                  rerun={testname: "test_fail_once"})
+                                  rerun=Rerun(testname,
+                                              match="test_fail_once",
+                                              success=True),
+                                  stats=TestStats(3, 1))
+        os_helper.unlink(marker_filename)
 
     def test_rerun_setup_class_hook_failure(self):
         # FAILURE then FAILURE
@@ -1135,10 +1435,13 @@ def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
                                   failed=[testname],
-                                  rerun={testname: "ExampleTests"})
+                                  rerun=Rerun(testname,
+                                              match="ExampleTests",
+                                              success=False),
+                                  stats=0)
 
     def test_rerun_teardown_class_hook_failure(self):
         # FAILURE then FAILURE
@@ -1155,10 +1458,13 @@ def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
                                   failed=[testname],
-                                  rerun={testname: "ExampleTests"})
+                                  rerun=Rerun(testname,
+                                              match="ExampleTests",
+                                              success=False),
+                                  stats=2)
 
     def test_rerun_setup_module_hook_failure(self):
         # FAILURE then FAILURE
@@ -1174,10 +1480,13 @@ def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
                                   failed=[testname],
-                                  rerun={testname: testname})
+                                  rerun=Rerun(testname,
+                                              match=None,
+                                              success=False),
+                                  stats=0)
 
     def test_rerun_teardown_module_hook_failure(self):
         # FAILURE then FAILURE
@@ -1193,10 +1502,13 @@ def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
-        self.check_executed_tests(output, testname,
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
+        self.check_executed_tests(output, [testname],
                                   failed=[testname],
-                                  rerun={testname: testname})
+                                  rerun=Rerun(testname,
+                                              match=None,
+                                              success=False),
+                                  stats=2)
 
     def test_rerun_setup_hook_failure(self):
         # FAILURE then FAILURE
@@ -1212,10 +1524,13 @@ def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
                                   failed=[testname],
-                                  rerun={testname: "test_success"})
+                                  rerun=Rerun(testname,
+                                              match="test_success",
+                                              success=False),
+                                  stats=2)
 
     def test_rerun_teardown_hook_failure(self):
         # FAILURE then FAILURE
@@ -1231,10 +1546,13 @@ def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
                                   failed=[testname],
-                                  rerun={testname: "test_success"})
+                                  rerun=Rerun(testname,
+                                              match="test_success",
+                                              success=False),
+                                  stats=2)
 
     def test_rerun_async_setup_hook_failure(self):
         # FAILURE then FAILURE
@@ -1250,10 +1568,12 @@ async def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
-                                  failed=[testname],
-                                  rerun={testname: "test_success"})
+                                  rerun=Rerun(testname,
+                                              match="test_success",
+                                              success=False),
+                                  stats=2)
 
     def test_rerun_async_teardown_hook_failure(self):
         # FAILURE then FAILURE
@@ -1269,10 +1589,13 @@ async def test_success(self):
         """)
         testname = self.create_test(code=code)
 
-        output = self.run_tests("-w", testname, exitcode=EXITCODE_BAD_TEST)
+        output = self.run_tests("--rerun", testname, exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, testname,
                                   failed=[testname],
-                                  rerun={testname: "test_success"})
+                                  rerun=Rerun(testname,
+                                              match="test_success",
+                                              success=False),
+                                  stats=2)
 
     def test_no_tests_ran(self):
         code = textwrap.dedent("""
@@ -1286,7 +1609,9 @@ def test_bug(self):
 
         output = self.run_tests(testname, "-m", "nosuchtest",
                                 exitcode=EXITCODE_NO_TESTS_RAN)
-        self.check_executed_tests(output, [testname], no_test_ran=testname)
+        self.check_executed_tests(output, [testname],
+                                  run_no_tests=testname,
+                                  stats=0, filtered=True)
 
     def test_no_tests_ran_skip(self):
         code = textwrap.dedent("""
@@ -1299,7 +1624,8 @@ def test_skipped(self):
         testname = self.create_test(code=code)
 
         output = self.run_tests(testname)
-        self.check_executed_tests(output, [testname])
+        self.check_executed_tests(output, [testname],
+                                  stats=TestStats(1, skipped=1))
 
     def test_no_tests_ran_multiple_tests_nonexistent(self):
         code = textwrap.dedent("""
@@ -1315,7 +1641,8 @@ def test_bug(self):
         output = self.run_tests(testname, testname2, "-m", "nosuchtest",
                                 exitcode=EXITCODE_NO_TESTS_RAN)
         self.check_executed_tests(output, [testname, testname2],
-                                  no_test_ran=[testname, testname2])
+                                  run_no_tests=[testname, testname2],
+                                  stats=0, filtered=True)
 
     def test_no_test_ran_some_test_exist_some_not(self):
         code = textwrap.dedent("""
@@ -1338,7 +1665,8 @@ def test_other_bug(self):
         output = self.run_tests(testname, testname2, "-m", "nosuchtest",
                                 "-m", "test_other_bug", exitcode=0)
         self.check_executed_tests(output, [testname, testname2],
-                                  no_test_ran=[testname])
+                                  run_no_tests=[testname],
+                                  stats=1, filtered=True)
 
     @support.cpython_only
     def test_uncollectable(self):
@@ -1365,7 +1693,8 @@ def test_garbage(self):
                                 exitcode=EXITCODE_ENV_CHANGED)
         self.check_executed_tests(output, [testname],
                                   env_changed=[testname],
-                                  fail_env_changed=True)
+                                  fail_env_changed=True,
+                                  stats=1)
 
     def test_multiprocessing_timeout(self):
         code = textwrap.dedent(r"""
@@ -1391,7 +1720,7 @@ def test_sleep(self):
         output = self.run_tests("-j2", "--timeout=1.0", testname,
                                 exitcode=EXITCODE_BAD_TEST)
         self.check_executed_tests(output, [testname],
-                                  failed=testname)
+                                  failed=testname, stats=0)
         self.assertRegex(output,
                          re.compile('%s timed out' % testname, re.MULTILINE))
 
@@ -1425,7 +1754,8 @@ def test_unraisable_exc(self):
                                 exitcode=EXITCODE_ENV_CHANGED)
         self.check_executed_tests(output, [testname],
                                   env_changed=[testname],
-                                  fail_env_changed=True)
+                                  fail_env_changed=True,
+                                  stats=1)
         self.assertIn("Warning -- Unraisable exception", output)
         self.assertIn("Exception: weakref callback bug", output)
 
@@ -1457,7 +1787,8 @@ def test_threading_excepthook(self):
                                 exitcode=EXITCODE_ENV_CHANGED)
         self.check_executed_tests(output, [testname],
                                   env_changed=[testname],
-                                  fail_env_changed=True)
+                                  fail_env_changed=True,
+                                  stats=1)
         self.assertIn("Warning -- Uncaught thread exception", output)
         self.assertIn("Exception: bug in thread", output)
 
@@ -1498,7 +1829,8 @@ def test_print_warning(self):
                 output = self.run_tests(*cmd, exitcode=EXITCODE_ENV_CHANGED)
                 self.check_executed_tests(output, [testname],
                                           env_changed=[testname],
-                                          fail_env_changed=True)
+                                          fail_env_changed=True,
+                                          stats=1)
                 self.assertRegex(output, regex)
 
     def test_unicode_guard_env(self):
@@ -1545,12 +1877,301 @@ def test_leak_tmp_file(self):
         self.check_executed_tests(output, testnames,
                                   env_changed=testnames,
                                   fail_env_changed=True,
-                                  randomize=True)
+                                  parallel=True,
+                                  stats=len(testnames))
         for testname in testnames:
             self.assertIn(f"Warning -- {testname} leaked temporary "
                           f"files (1): mytmpfile",
                           output)
 
+    def test_worker_decode_error(self):
+        # gh-109425: Use "backslashreplace" error handler to decode stdout.
+        if sys.platform == 'win32':
+            encoding = locale.getencoding()
+        else:
+            encoding = sys.stdout.encoding
+            if encoding is None:
+                encoding = sys.__stdout__.encoding
+                if encoding is None:
+                    self.skipTest("cannot get regrtest worker encoding")
+
+        nonascii = bytes(ch for ch in range(128, 256))
+        corrupted_output = b"nonascii:%s\n" % (nonascii,)
+        # gh-108989: On Windows, assertion errors are written in UTF-16: when
+        # decoded each letter is follow by a NUL character.
+        assertion_failed = 'Assertion failed: tstate_is_alive(tstate)\n'
+        corrupted_output += assertion_failed.encode('utf-16-le')
+        try:
+            corrupted_output.decode(encoding)
+        except UnicodeDecodeError:
+            pass
+        else:
+            self.skipTest(f"{encoding} can decode non-ASCII bytes")
+
+        expected_line = corrupted_output.decode(encoding, 'backslashreplace')
+
+        code = textwrap.dedent(fr"""
+            import sys
+            import unittest
+
+            class Tests(unittest.TestCase):
+                def test_pass(self):
+                    pass
+
+            # bytes which cannot be decoded from UTF-8
+            corrupted_output = {corrupted_output!a}
+            sys.stdout.buffer.write(corrupted_output)
+            sys.stdout.buffer.flush()
+        """)
+        testname = self.create_test(code=code)
+
+        output = self.run_tests("--fail-env-changed", "-v", "-j1", testname)
+        self.check_executed_tests(output, [testname],
+                                  parallel=True,
+                                  stats=1)
+        self.check_line(output, expected_line, regex=False)
+
+    def test_doctest(self):
+        code = textwrap.dedent(r'''
+            import doctest
+            import sys
+            from test import support
+
+            def my_function():
+                """
+                Pass:
+
+                >>> 1 + 1
+                2
+
+                Failure:
+
+                >>> 2 + 3
+                23
+                >>> 1 + 1
+                11
+
+                Skipped test (ignored):
+
+                >>> id(1.0)  # doctest: +SKIP
+                7948648
+                """
+
+            def load_tests(loader, tests, pattern):
+                tests.addTest(doctest.DocTestSuite())
+                return tests
+        ''')
+        testname = self.create_test(code=code)
+
+        output = self.run_tests("--fail-env-changed", "-v", "-j1", testname,
+                                exitcode=EXITCODE_BAD_TEST)
+        self.check_executed_tests(output, [testname],
+                                  failed=[testname],
+                                  parallel=True,
+                                  stats=TestStats(1, 1, 0))
+
+    def _check_random_seed(self, run_workers: bool):
+        # gh-109276: When -r/--randomize is used, random.seed() is called
+        # with the same random seed before running each test file.
+        code = textwrap.dedent(r'''
+            import random
+            import unittest
+
+            class RandomSeedTest(unittest.TestCase):
+                def test_randint(self):
+                    numbers = [random.randint(0, 1000) for _ in range(10)]
+                    print(f"Random numbers: {numbers}")
+        ''')
+        tests = [self.create_test(name=f'test_random{i}', code=code)
+                 for i in range(1, 3+1)]
+
+        random_seed = 856_656_202
+        cmd = ["--randomize", f"--randseed={random_seed}"]
+        if run_workers:
+            # run as many worker processes than the number of tests
+            cmd.append(f'-j{len(tests)}')
+        cmd.extend(tests)
+        output = self.run_tests(*cmd)
+
+        random.seed(random_seed)
+        # Make the assumption that nothing consume entropy between libregrest
+        # setup_tests() which calls random.seed() and RandomSeedTest calling
+        # random.randint().
+        numbers = [random.randint(0, 1000) for _ in range(10)]
+        expected = f"Random numbers: {numbers}"
+
+        regex = r'^Random numbers: .*$'
+        matches = re.findall(regex, output, flags=re.MULTILINE)
+        self.assertEqual(matches, [expected] * len(tests))
+
+    def test_random_seed(self):
+        self._check_random_seed(run_workers=False)
+
+    def test_random_seed_workers(self):
+        self._check_random_seed(run_workers=True)
+
+    def test_python_command(self):
+        code = textwrap.dedent(r"""
+            import sys
+            import unittest
+
+            class WorkerTests(unittest.TestCase):
+                def test_dev_mode(self):
+                    self.assertTrue(sys.flags.dev_mode)
+        """)
+        tests = [self.create_test(code=code) for _ in range(3)]
+
+        # Custom Python command: "python -X dev"
+        python_cmd = [sys.executable, '-X', 'dev']
+        # test.libregrtest.cmdline uses shlex.split() to parse the Python
+        # command line string
+        python_cmd = shlex.join(python_cmd)
+
+        output = self.run_tests("--python", python_cmd, "-j0", *tests)
+        self.check_executed_tests(output, tests,
+                                  stats=len(tests), parallel=True)
+
+    def test_unload_tests(self):
+        # Test that unloading test modules does not break tests
+        # that import from other tests.
+        # The test execution order matters for this test.
+        # Both test_regrtest_a and test_regrtest_c which are executed before
+        # and after test_regrtest_b import a submodule from the test_regrtest_b
+        # package and use it in testing. test_regrtest_b itself does not import
+        # that submodule.
+        # Previously test_regrtest_c failed because test_regrtest_b.util in
+        # sys.modules was left after test_regrtest_a (making the import
+        # statement no-op), but new test_regrtest_b without the util attribute
+        # was imported for test_regrtest_b.
+        testdir = os.path.join(os.path.dirname(__file__),
+                               'regrtestdata', 'import_from_tests')
+        tests = [f'test_regrtest_{name}' for name in ('a', 'b', 'c')]
+        args = ['-Wd', '-E', '-bb', '-m', 'test', '--testdir=%s' % testdir, *tests]
+        output = self.run_python(args)
+        self.check_executed_tests(output, tests, stats=3)
+
+    def check_add_python_opts(self, option):
+        # --fast-ci and --slow-ci add "-u -W default -bb -E" options to Python
+        code = textwrap.dedent(r"""
+            import sys
+            import unittest
+            from test import support
+            try:
+                from _testinternalcapi import get_config
+            except ImportError:
+                get_config = None
+
+            # WASI/WASM buildbots don't use -E option
+            use_environment = (support.is_emscripten or support.is_wasi)
+
+            class WorkerTests(unittest.TestCase):
+                @unittest.skipUnless(get_config is None, 'need get_config()')
+                def test_config(self):
+                    config = get_config()['config']
+                    # -u option
+                    self.assertEqual(config['buffered_stdio'], 0)
+                    # -W default option
+                    self.assertTrue(config['warnoptions'], ['default'])
+                    # -bb option
+                    self.assertTrue(config['bytes_warning'], 2)
+                    # -E option
+                    self.assertTrue(config['use_environment'], use_environment)
+
+                def test_python_opts(self):
+                    # -u option
+                    self.assertTrue(sys.__stdout__.write_through)
+                    self.assertTrue(sys.__stderr__.write_through)
+
+                    # -W default option
+                    self.assertTrue(sys.warnoptions, ['default'])
+
+                    # -bb option
+                    self.assertEqual(sys.flags.bytes_warning, 2)
+
+                    # -E option
+                    self.assertEqual(not sys.flags.ignore_environment,
+                                     use_environment)
+        """)
+        testname = self.create_test(code=code)
+
+        # Use directly subprocess to control the exact command line
+        cmd = [sys.executable,
+               "-m", "test", option,
+               f'--testdir={self.tmptestdir}',
+               testname]
+        proc = subprocess.run(cmd,
+                              stdout=subprocess.PIPE,
+                              stderr=subprocess.STDOUT,
+                              text=True)
+        self.assertEqual(proc.returncode, 0, proc)
+
+    def test_add_python_opts(self):
+        for opt in ("--fast-ci", "--slow-ci"):
+            with self.subTest(opt=opt):
+                self.check_add_python_opts(opt)
+
+    # gh-76319: Raising SIGSEGV on Android may not cause a crash.
+    @unittest.skipIf(support.is_android,
+                     'raising SIGSEGV on Android is unreliable')
+    def test_worker_output_on_failure(self):
+        try:
+            from faulthandler import _sigsegv
+        except ImportError:
+            self.skipTest("need faulthandler._sigsegv")
+
+        code = textwrap.dedent(r"""
+            import faulthandler
+            import unittest
+            from test import support
+
+            class CrashTests(unittest.TestCase):
+                def test_crash(self):
+                    print("just before crash!", flush=True)
+
+                    with support.SuppressCrashReport():
+                        faulthandler._sigsegv(True)
+        """)
+        testname = self.create_test(code=code)
+
+        # Sanitizers must not handle SIGSEGV (ex: for test_enable_fd())
+        env = dict(os.environ)
+        option = 'handle_segv=0'
+        support.set_sanitizer_env_var(env, option)
+
+        output = self.run_tests("-j1", testname,
+                                exitcode=EXITCODE_BAD_TEST,
+                                env=env)
+        self.check_executed_tests(output, testname,
+                                  failed=[testname],
+                                  stats=0, parallel=True)
+        if not support.MS_WINDOWS:
+            exitcode = -int(signal.SIGSEGV)
+            self.assertIn(f"Exit code {exitcode} (SIGSEGV)", output)
+        self.check_line(output, "just before crash!", full=True, regex=False)
+
+    def test_verbose3(self):
+        code = textwrap.dedent(r"""
+            import unittest
+            from test import support
+
+            class VerboseTests(unittest.TestCase):
+                def test_pass(self):
+                    print("SPAM SPAM SPAM")
+        """)
+        testname = self.create_test(code=code)
+
+        # Run sequentially
+        output = self.run_tests("--verbose3", testname)
+        self.check_executed_tests(output, testname, stats=1)
+        self.assertNotIn('SPAM SPAM SPAM', output)
+
+        # -R option needs a debug build
+        if support.Py_DEBUG:
+            # Check for reference leaks, run in parallel
+            output = self.run_tests("-R", "3:3", "-j1", "--verbose3", testname)
+            self.check_executed_tests(output, testname, stats=1, parallel=True)
+            self.assertNotIn('SPAM SPAM SPAM', output)
+
 
 class TestUtils(unittest.TestCase):
     def test_format_duration(self):
@@ -1575,6 +2196,160 @@ def test_format_duration(self):
         self.assertEqual(utils.format_duration(3 * 3600 + 1),
                          '3 hour 1 sec')
 
+    def test_normalize_test_name(self):
+        normalize = normalize_test_name
+        self.assertEqual(normalize('test_access (test.test_os.FileTests.test_access)'),
+                         'test_access')
+        self.assertEqual(normalize('setUpClass (test.test_os.ChownFileTests)', is_error=True),
+                         'ChownFileTests')
+        self.assertEqual(normalize('test_success (test.test_bug.ExampleTests.test_success)', is_error=True),
+                         'test_success')
+        self.assertIsNone(normalize('setUpModule (test.test_x)', is_error=True))
+        self.assertIsNone(normalize('tearDownModule (test.test_module)', is_error=True))
+
+    def test_get_signal_name(self):
+        for exitcode, expected in (
+            (-int(signal.SIGINT), 'SIGINT'),
+            (-int(signal.SIGSEGV), 'SIGSEGV'),
+            (3221225477, "STATUS_ACCESS_VIOLATION"),
+            (0xC00000FD, "STATUS_STACK_OVERFLOW"),
+        ):
+            self.assertEqual(utils.get_signal_name(exitcode), expected, exitcode)
+
+    def test_format_resources(self):
+        format_resources = utils.format_resources
+        ALL_RESOURCES = utils.ALL_RESOURCES
+        self.assertEqual(
+            format_resources(("network",)),
+            'resources (1): network')
+        self.assertEqual(
+            format_resources(("audio", "decimal", "network")),
+            'resources (3): audio,decimal,network')
+        self.assertEqual(
+            format_resources(ALL_RESOURCES),
+            'resources: all')
+        self.assertEqual(
+            format_resources(tuple(name for name in ALL_RESOURCES
+                                   if name != "cpu")),
+            'resources: all,-cpu')
+        self.assertEqual(
+            format_resources((*ALL_RESOURCES, "tzdata")),
+            'resources: all,tzdata')
+
+    def test_match_test(self):
+        class Test:
+            def __init__(self, test_id):
+                self.test_id = test_id
+
+            def id(self):
+                return self.test_id
+
+        test_access = Test('test.test_os.FileTests.test_access')
+        test_chdir = Test('test.test_os.Win32ErrorTests.test_chdir')
+        test_copy = Test('test.test_shutil.TestCopy.test_copy')
+
+        # Test acceptance
+        with support.swap_attr(support, '_test_matchers', ()):
+            # match all
+            set_match_tests([])
+            self.assertTrue(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+
+            # match all using None
+            set_match_tests(None)
+            self.assertTrue(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+
+            # match the full test identifier
+            set_match_tests([(test_access.id(), True)])
+            self.assertTrue(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+
+            # match the module name
+            set_match_tests([('test_os', True)])
+            self.assertTrue(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+            self.assertFalse(match_test(test_copy))
+
+            # Test '*' pattern
+            set_match_tests([('test_*', True)])
+            self.assertTrue(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+
+            # Test case sensitivity
+            set_match_tests([('filetests', True)])
+            self.assertFalse(match_test(test_access))
+            set_match_tests([('FileTests', True)])
+            self.assertTrue(match_test(test_access))
+
+            # Test pattern containing '.' and a '*' metacharacter
+            set_match_tests([('*test_os.*.test_*', True)])
+            self.assertTrue(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+            self.assertFalse(match_test(test_copy))
+
+            # Multiple patterns
+            set_match_tests([(test_access.id(), True), (test_chdir.id(), True)])
+            self.assertTrue(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+            self.assertFalse(match_test(test_copy))
+
+            set_match_tests([('test_access', True), ('DONTMATCH', True)])
+            self.assertTrue(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+
+        # Test rejection
+        with support.swap_attr(support, '_test_matchers', ()):
+            # match the full test identifier
+            set_match_tests([(test_access.id(), False)])
+            self.assertFalse(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+
+            # match the module name
+            set_match_tests([('test_os', False)])
+            self.assertFalse(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+            self.assertTrue(match_test(test_copy))
+
+            # Test '*' pattern
+            set_match_tests([('test_*', False)])
+            self.assertFalse(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+
+            # Test case sensitivity
+            set_match_tests([('filetests', False)])
+            self.assertTrue(match_test(test_access))
+            set_match_tests([('FileTests', False)])
+            self.assertFalse(match_test(test_access))
+
+            # Test pattern containing '.' and a '*' metacharacter
+            set_match_tests([('*test_os.*.test_*', False)])
+            self.assertFalse(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+            self.assertTrue(match_test(test_copy))
+
+            # Multiple patterns
+            set_match_tests([(test_access.id(), False), (test_chdir.id(), False)])
+            self.assertFalse(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+            self.assertTrue(match_test(test_copy))
+
+            set_match_tests([('test_access', False), ('DONTMATCH', False)])
+            self.assertFalse(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+
+        # Test mixed filters
+        with support.swap_attr(support, '_test_matchers', ()):
+            set_match_tests([('*test_os', False), ('test_access', True)])
+            self.assertTrue(match_test(test_access))
+            self.assertFalse(match_test(test_chdir))
+            self.assertTrue(match_test(test_copy))
+
+            set_match_tests([('*test_os', True), ('test_access', False)])
+            self.assertFalse(match_test(test_access))
+            self.assertTrue(match_test(test_chdir))
+            self.assertFalse(match_test(test_copy))
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_repl.py b/Lib/test/test_repl.py
index ddb4aa68048df1..a28d1595f44533 100644
--- a/Lib/test/test_repl.py
+++ b/Lib/test/test_repl.py
@@ -5,6 +5,7 @@
 import unittest
 import subprocess
 from textwrap import dedent
+from test import support
 from test.support import cpython_only, has_subprocess_support, SuppressCrashReport
 from test.support.script_helper import kill_python
 
@@ -59,6 +60,9 @@ def run_on_interactive_mode(source):
 class TestInteractiveInterpreter(unittest.TestCase):
 
     @cpython_only
+    # Python built with Py_TRACE_REFS fail with a fatal error in
+    # _PyRefchain_Trace() on memory allocation error.
+    @unittest.skipIf(support.Py_TRACE_REFS, 'cannot test Py_TRACE_REFS build')
     def test_no_memory(self):
         # Issue #30696: Fix the interactive interpreter looping endlessly when
         # no memory. Check also that the fix does not break the interactive
@@ -127,6 +131,69 @@ def test_close_stdin(self):
         self.assertEqual(process.returncode, 0)
         self.assertIn('before close', output)
 
+    def test_interactive_traceback_reporting(self):
+        user_input = "1 / 0 / 3 / 4"
+        p = spawn_repl()
+        p.stdin.write(user_input)
+        output = kill_python(p)
+        self.assertEqual(p.returncode, 0)
+
+        traceback_lines = output.splitlines()[-6:-1]
+        expected_lines = [
+            "Traceback (most recent call last):",
+            "  File \"<stdin>\", line 1, in <module>",
+            "    1 / 0 / 3 / 4",
+            "    ~~^~~",
+            "ZeroDivisionError: division by zero",
+        ]
+        self.assertEqual(traceback_lines, expected_lines)
+
+    def test_interactive_traceback_reporting_multiple_input(self):
+        user_input1 = dedent("""
+        def foo(x):
+            1 / x
+
+        """)
+        p = spawn_repl()
+        p.stdin.write(user_input1)
+        user_input2 = "foo(0)"
+        p.stdin.write(user_input2)
+        output = kill_python(p)
+        self.assertEqual(p.returncode, 0)
+
+        traceback_lines = output.splitlines()[-8:-1]
+        expected_lines = [
+            '  File "<stdin>", line 1, in <module>',
+            '    foo(0)',
+            '    ~~~^^^',
+            '  File "<stdin>", line 2, in foo',
+            '    1 / x',
+            '    ~~^~~',
+            'ZeroDivisionError: division by zero'
+        ]
+        self.assertEqual(traceback_lines, expected_lines)
+
+    def test_interactive_source_is_in_linecache(self):
+        user_input = dedent("""
+        def foo(x):
+            return x + 1
+
+        def bar(x):
+            return foo(x) + 2
+        """)
+        p = spawn_repl()
+        p.stdin.write(user_input)
+        user_input2 = dedent("""
+        import linecache
+        print(linecache.cache['<stdin>-1'])
+        """)
+        p.stdin.write(user_input2)
+        output = kill_python(p)
+        self.assertEqual(p.returncode, 0)
+        expected = "(30, None, [\'def foo(x):\\n\', \'    return x + 1\\n\', \'\\n\'], \'<stdin>\')"
+        self.assertIn(expected, output, expected)
+
+
 
 class TestInteractiveModeSyntaxErrors(unittest.TestCase):
 
diff --git a/Lib/test/test_reprlib.py b/Lib/test/test_reprlib.py
index e7216d427200c1..3e93b561c143d8 100644
--- a/Lib/test/test_reprlib.py
+++ b/Lib/test/test_reprlib.py
@@ -765,5 +765,25 @@ def test_assigned_attributes(self):
         for name in assigned:
             self.assertIs(getattr(wrapper, name), getattr(wrapped, name))
 
+    def test__wrapped__(self):
+        class X:
+            def __repr__(self):
+                return 'X()'
+            f = __repr__ # save reference to check it later
+            __repr__ = recursive_repr()(__repr__)
+
+        self.assertIs(X.f, X.__repr__.__wrapped__)
+
+    def test__type_params__(self):
+        class My:
+            @recursive_repr()
+            def __repr__[T: str](self, default: T = '') -> str:
+                return default
+
+        type_params = My().__repr__.__type_params__
+        self.assertEqual(len(type_params), 1)
+        self.assertEqual(type_params[0].__name__, 'T')
+        self.assertEqual(type_params[0].__bound__, str)
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_richcmp.py b/Lib/test/test_richcmp.py
index 58729a9fea62fa..6fb31c80d7e670 100644
--- a/Lib/test/test_richcmp.py
+++ b/Lib/test/test_richcmp.py
@@ -221,6 +221,7 @@ def do(bad):
             self.assertRaises(Exc, func, Bad())
 
     @support.no_tracing
+    @support.infinite_recursion()
     def test_recursion(self):
         # Check that comparison for recursive objects fails gracefully
         from collections import UserList
diff --git a/Lib/test/test_rlcompleter.py b/Lib/test/test_rlcompleter.py
index 6b5fc9a0247f4b..7347fca71be2fe 100644
--- a/Lib/test/test_rlcompleter.py
+++ b/Lib/test/test_rlcompleter.py
@@ -53,7 +53,10 @@ def test_attr_matches(self):
                          ['str.{}('.format(x) for x in dir(str)
                           if x.startswith('s')])
         self.assertEqual(self.stdcompleter.attr_matches('tuple.foospamegg'), [])
-        expected = sorted({'None.%s%s' % (x, '(' if x != '__doc__' else '')
+        expected = sorted({'None.%s%s' % (x,
+                                          '()' if x == '__init_subclass__'
+                                          else '' if x == '__doc__'
+                                          else '(')
                            for x in dir(None)})
         self.assertEqual(self.stdcompleter.attr_matches('None.'), expected)
         self.assertEqual(self.stdcompleter.attr_matches('None._'), expected)
diff --git a/Lib/test/test_runpy.py b/Lib/test/test_runpy.py
index 6aaa288c14e1d7..628c8cae38a751 100644
--- a/Lib/test/test_runpy.py
+++ b/Lib/test/test_runpy.py
@@ -12,7 +12,7 @@
 import textwrap
 import unittest
 import warnings
-from test.support import no_tracing, verbose, requires_subprocess
+from test.support import no_tracing, verbose, requires_subprocess, requires_resource
 from test.support.import_helper import forget, make_legacy_pyc, unload
 from test.support.os_helper import create_empty_file, temp_dir
 from test.support.script_helper import make_script, make_zip_script
@@ -733,6 +733,7 @@ def test_zipfile_error(self):
             self._check_import_error(zip_name, msg)
 
     @no_tracing
+    @requires_resource('cpu')
     def test_main_recursion_error(self):
         with temp_dir() as script_dir, temp_dir() as dummy_dir:
             mod_name = '__main__'
diff --git a/Lib/test/test_selectors.py b/Lib/test/test_selectors.py
index c2db88c203920a..677349c2bfca93 100644
--- a/Lib/test/test_selectors.py
+++ b/Lib/test/test_selectors.py
@@ -223,6 +223,8 @@ def test_close(self):
         self.assertRaises(RuntimeError, s.get_key, wr)
         self.assertRaises(KeyError, mapping.__getitem__, rd)
         self.assertRaises(KeyError, mapping.__getitem__, wr)
+        self.assertEqual(mapping.get(rd), None)
+        self.assertEqual(mapping.get(wr), None)
 
     def test_get_key(self):
         s = self.SELECTOR()
@@ -241,13 +243,17 @@ def test_get_map(self):
         self.addCleanup(s.close)
 
         rd, wr = self.make_socketpair()
+        sentinel = object()
 
         keys = s.get_map()
         self.assertFalse(keys)
         self.assertEqual(len(keys), 0)
         self.assertEqual(list(keys), [])
+        self.assertEqual(keys.get(rd), None)
+        self.assertEqual(keys.get(rd, sentinel), sentinel)
         key = s.register(rd, selectors.EVENT_READ, "data")
         self.assertIn(rd, keys)
+        self.assertEqual(key, keys.get(rd))
         self.assertEqual(key, keys[rd])
         self.assertEqual(len(keys), 1)
         self.assertEqual(list(keys), [rd.fileno()])
@@ -279,6 +285,35 @@ def test_select(self):
 
         self.assertEqual([(wr_key, selectors.EVENT_WRITE)], result)
 
+    def test_select_read_write(self):
+        # gh-110038: when a file descriptor is registered for both read and
+        # write, the two events must be seen on a single call to select().
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        sock1, sock2 = self.make_socketpair()
+        sock2.send(b"foo")
+        my_key = s.register(sock1, selectors.EVENT_READ | selectors.EVENT_WRITE)
+
+        seen_read, seen_write = False, False
+        result = s.select()
+        # We get the read and write either in the same result entry or in two
+        # distinct entries with the same key.
+        self.assertLessEqual(len(result), 2)
+        for key, events in result:
+            self.assertTrue(isinstance(key, selectors.SelectorKey))
+            self.assertEqual(key, my_key)
+            self.assertFalse(events & ~(selectors.EVENT_READ |
+                                        selectors.EVENT_WRITE))
+            if events & selectors.EVENT_READ:
+                self.assertFalse(seen_read)
+                seen_read = True
+            if events & selectors.EVENT_WRITE:
+                self.assertFalse(seen_write)
+                seen_write = True
+        self.assertTrue(seen_read)
+        self.assertTrue(seen_write)
+
     def test_context_manager(self):
         s = self.SELECTOR()
         self.addCleanup(s.close)
@@ -449,6 +484,7 @@ class ScalableSelectorMixIn:
     # see issue #18963 for why it's skipped on older OS X versions
     @support.requires_mac_ver(10, 5)
     @unittest.skipUnless(resource, "Test needs resource module")
+    @support.requires_resource('cpu')
     def test_above_fd_setsize(self):
         # A scalable implementation should have no problem with more than
         # FD_SETSIZE file descriptors. Since we don't know the value, we just
diff --git a/Lib/test/test_set.py b/Lib/test/test_set.py
index 2dd65240f5faec..d9102eb98a54a6 100644
--- a/Lib/test/test_set.py
+++ b/Lib/test/test_set.py
@@ -635,10 +635,6 @@ def __le__(self, some_set):
         myset >= myobj
         self.assertTrue(myobj.le_called)
 
-    @unittest.skipUnless(hasattr(set, "test_c_api"),
-                         'C API test only available in a debug build')
-    def test_c_api(self):
-        self.assertEqual(set().test_c_api(), True)
 
 class SetSubclass(set):
     pass
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index 36f0b8a31a3715..d7061b2f9d8724 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -23,7 +23,6 @@
                     unregister_unpack_format, get_unpack_formats,
                     SameFileError, _GiveupOnFastCopy)
 import tarfile
-import warnings
 import zipfile
 try:
     import posix
@@ -209,8 +208,7 @@ def test_rmtree_fails_on_symlink_onerror(self):
         errors = []
         def onerror(*args):
             errors.append(args)
-        with self.assertWarns(DeprecationWarning):
-            shutil.rmtree(link, onerror=onerror)
+        shutil.rmtree(link, onerror=onerror)
         self.assertEqual(len(errors), 1)
         self.assertIs(errors[0][0], os.path.islink)
         self.assertEqual(errors[0][1], link)
@@ -271,8 +269,7 @@ def test_rmtree_fails_on_junctions_onerror(self):
         errors = []
         def onerror(*args):
             errors.append(args)
-        with self.assertWarns(DeprecationWarning):
-            shutil.rmtree(link, onerror=onerror)
+        shutil.rmtree(link, onerror=onerror)
         self.assertEqual(len(errors), 1)
         self.assertIs(errors[0][0], os.path.islink)
         self.assertEqual(errors[0][1], link)
@@ -320,7 +317,7 @@ def test_rmtree_works_on_junctions(self):
         self.assertTrue(os.path.exists(dir3))
         self.assertTrue(os.path.exists(file1))
 
-    def test_rmtree_errors_onerror(self):
+    def test_rmtree_errors(self):
         # filename is guaranteed not to exist
         filename = tempfile.mktemp(dir=self.mkdtemp())
         self.assertRaises(FileNotFoundError, shutil.rmtree, filename)
@@ -329,8 +326,8 @@ def test_rmtree_errors_onerror(self):
 
         # existing file
         tmpdir = self.mkdtemp()
-        write_file((tmpdir, "tstfile"), "")
         filename = os.path.join(tmpdir, "tstfile")
+        write_file(filename, "")
         with self.assertRaises(NotADirectoryError) as cm:
             shutil.rmtree(filename)
         self.assertEqual(cm.exception.filename, filename)
@@ -338,11 +335,23 @@ def test_rmtree_errors_onerror(self):
         # test that ignore_errors option is honored
         shutil.rmtree(filename, ignore_errors=True)
         self.assertTrue(os.path.exists(filename))
+
+        self.assertRaises(TypeError, shutil.rmtree, None)
+        self.assertRaises(TypeError, shutil.rmtree, None, ignore_errors=True)
+        exc = TypeError if shutil.rmtree.avoids_symlink_attacks else NotImplementedError
+        with self.assertRaises(exc):
+            shutil.rmtree(filename, dir_fd='invalid')
+        with self.assertRaises(exc):
+            shutil.rmtree(filename, dir_fd='invalid', ignore_errors=True)
+
+    def test_rmtree_errors_onerror(self):
+        tmpdir = self.mkdtemp()
+        filename = os.path.join(tmpdir, "tstfile")
+        write_file(filename, "")
         errors = []
         def onerror(*args):
             errors.append(args)
-        with self.assertWarns(DeprecationWarning):
-            shutil.rmtree(filename, onerror=onerror)
+        shutil.rmtree(filename, onerror=onerror)
         self.assertEqual(len(errors), 2)
         self.assertIs(errors[0][0], os.scandir)
         self.assertEqual(errors[0][1], filename)
@@ -354,23 +363,9 @@ def onerror(*args):
         self.assertEqual(errors[1][2][1].filename, filename)
 
     def test_rmtree_errors_onexc(self):
-        # filename is guaranteed not to exist
-        filename = tempfile.mktemp(dir=self.mkdtemp())
-        self.assertRaises(FileNotFoundError, shutil.rmtree, filename)
-        # test that ignore_errors option is honored
-        shutil.rmtree(filename, ignore_errors=True)
-
-        # existing file
         tmpdir = self.mkdtemp()
-        write_file((tmpdir, "tstfile"), "")
         filename = os.path.join(tmpdir, "tstfile")
-        with self.assertRaises(NotADirectoryError) as cm:
-            shutil.rmtree(filename)
-        self.assertEqual(cm.exception.filename, filename)
-        self.assertTrue(os.path.exists(filename))
-        # test that ignore_errors option is honored
-        shutil.rmtree(filename, ignore_errors=True)
-        self.assertTrue(os.path.exists(filename))
+        write_file(filename, "")
         errors = []
         def onexc(*args):
             errors.append(args)
@@ -411,8 +406,7 @@ def test_on_error(self):
         self.addCleanup(os.chmod, self.child_file_path, old_child_file_mode)
         self.addCleanup(os.chmod, self.child_dir_path, old_child_dir_mode)
 
-        with self.assertWarns(DeprecationWarning):
-            shutil.rmtree(TESTFN, onerror=self.check_args_to_onerror)
+        shutil.rmtree(TESTFN, onerror=self.check_args_to_onerror)
         # Test whether onerror has actually been called.
         self.assertEqual(self.errorState, 3,
                          "Expected call to onerror function did not happen.")
@@ -538,8 +532,7 @@ def onexc(*args):
         self.addCleanup(os.chmod, self.child_file_path, old_child_file_mode)
         self.addCleanup(os.chmod, self.child_dir_path, old_child_dir_mode)
 
-        with self.assertWarns(DeprecationWarning):
-            shutil.rmtree(TESTFN, onerror=onerror, onexc=onexc)
+        shutil.rmtree(TESTFN, onerror=onerror, onexc=onexc)
         self.assertTrue(onexc_called)
         self.assertFalse(onerror_called)
 
@@ -583,6 +576,41 @@ def _raiser(*args, **kwargs):
             self.assertFalse(shutil._use_fd_functions)
             self.assertFalse(shutil.rmtree.avoids_symlink_attacks)
 
+    @unittest.skipUnless(shutil._use_fd_functions, "requires safe rmtree")
+    def test_rmtree_fails_on_close(self):
+        # Test that the error handler is called for failed os.close() and that
+        # os.close() is only called once for a file descriptor.
+        tmp = self.mkdtemp()
+        dir1 = os.path.join(tmp, 'dir1')
+        os.mkdir(dir1)
+        dir2 = os.path.join(dir1, 'dir2')
+        os.mkdir(dir2)
+        def close(fd):
+            orig_close(fd)
+            nonlocal close_count
+            close_count += 1
+            raise OSError
+
+        close_count = 0
+        with support.swap_attr(os, 'close', close) as orig_close:
+            with self.assertRaises(OSError):
+                shutil.rmtree(dir1)
+        self.assertTrue(os.path.isdir(dir2))
+        self.assertEqual(close_count, 2)
+
+        close_count = 0
+        errors = []
+        def onexc(*args):
+            errors.append(args)
+        with support.swap_attr(os, 'close', close) as orig_close:
+            shutil.rmtree(dir1, onexc=onexc)
+        self.assertEqual(len(errors), 2)
+        self.assertIs(errors[0][0], close)
+        self.assertEqual(errors[0][1], dir2)
+        self.assertIs(errors[1][0], close)
+        self.assertEqual(errors[1][1], dir1)
+        self.assertEqual(close_count, 2)
+
     @unittest.skipUnless(shutil._use_fd_functions, "dir_fd is not supported")
     def test_rmtree_with_dir_fd(self):
         tmp_dir = self.mkdtemp()
@@ -639,6 +667,63 @@ def test_rmtree_on_junction(self):
         finally:
             shutil.rmtree(TESTFN, ignore_errors=True)
 
+    @unittest.skipIf(sys.platform[:6] == 'cygwin',
+                     "This test can't be run on Cygwin (issue #1071513).")
+    @os_helper.skip_if_dac_override
+    @os_helper.skip_unless_working_chmod
+    def test_rmtree_deleted_race_condition(self):
+        # bpo-37260
+        #
+        # Test that a file or a directory deleted after it is enumerated
+        # by scandir() but before unlink() or rmdr() is called doesn't
+        # generate any errors.
+        def _onexc(fn, path, exc):
+            assert fn in (os.rmdir, os.unlink)
+            if not isinstance(exc, PermissionError):
+                raise
+            # Make the parent and the children writeable.
+            for p, mode in zip(paths, old_modes):
+                os.chmod(p, mode)
+            # Remove other dirs except one.
+            keep = next(p for p in dirs if p != path)
+            for p in dirs:
+                if p != keep:
+                    os.rmdir(p)
+            # Remove other files except one.
+            keep = next(p for p in files if p != path)
+            for p in files:
+                if p != keep:
+                    os.unlink(p)
+
+        os.mkdir(TESTFN)
+        paths = [TESTFN] + [os.path.join(TESTFN, f'child{i}')
+                            for i in range(6)]
+        dirs = paths[1::2]
+        files = paths[2::2]
+        for path in dirs:
+            os.mkdir(path)
+        for path in files:
+            write_file(path, '')
+
+        old_modes = [os.stat(path).st_mode for path in paths]
+
+        # Make the parent and the children non-writeable.
+        new_mode = stat.S_IREAD|stat.S_IEXEC
+        for path in reversed(paths):
+            os.chmod(path, new_mode)
+
+        try:
+            shutil.rmtree(TESTFN, onexc=_onexc)
+        except:
+            # Test failed, so cleanup artifacts.
+            for path, mode in zip(paths, old_modes):
+                try:
+                    os.chmod(path, mode)
+                except OSError:
+                    pass
+            shutil.rmtree(TESTFN)
+            raise
+
 
 class TestCopyTree(BaseTest, unittest.TestCase):
 
@@ -1840,6 +1925,49 @@ def test_register_archive_format(self):
         formats = [name for name, params in get_archive_formats()]
         self.assertNotIn('xxx', formats)
 
+    def test_make_tarfile_rootdir_nodir(self):
+        # GH-99203
+        self.addCleanup(os_helper.unlink, f'{TESTFN}.tar')
+        for dry_run in (False, True):
+            with self.subTest(dry_run=dry_run):
+                tmp_dir = self.mkdtemp()
+                nonexisting_file = os.path.join(tmp_dir, 'nonexisting')
+                with self.assertRaises(FileNotFoundError) as cm:
+                    make_archive(TESTFN, 'tar', nonexisting_file, dry_run=dry_run)
+                self.assertEqual(cm.exception.errno, errno.ENOENT)
+                self.assertEqual(cm.exception.filename, nonexisting_file)
+                self.assertFalse(os.path.exists(f'{TESTFN}.tar'))
+
+                tmp_fd, tmp_file = tempfile.mkstemp(dir=tmp_dir)
+                os.close(tmp_fd)
+                with self.assertRaises(NotADirectoryError) as cm:
+                    make_archive(TESTFN, 'tar', tmp_file, dry_run=dry_run)
+                self.assertEqual(cm.exception.errno, errno.ENOTDIR)
+                self.assertEqual(cm.exception.filename, tmp_file)
+                self.assertFalse(os.path.exists(f'{TESTFN}.tar'))
+
+    @support.requires_zlib()
+    def test_make_zipfile_rootdir_nodir(self):
+        # GH-99203
+        self.addCleanup(os_helper.unlink, f'{TESTFN}.zip')
+        for dry_run in (False, True):
+            with self.subTest(dry_run=dry_run):
+                tmp_dir = self.mkdtemp()
+                nonexisting_file = os.path.join(tmp_dir, 'nonexisting')
+                with self.assertRaises(FileNotFoundError) as cm:
+                    make_archive(TESTFN, 'zip', nonexisting_file, dry_run=dry_run)
+                self.assertEqual(cm.exception.errno, errno.ENOENT)
+                self.assertEqual(cm.exception.filename, nonexisting_file)
+                self.assertFalse(os.path.exists(f'{TESTFN}.zip'))
+
+                tmp_fd, tmp_file = tempfile.mkstemp(dir=tmp_dir)
+                os.close(tmp_fd)
+                with self.assertRaises(NotADirectoryError) as cm:
+                    make_archive(TESTFN, 'zip', tmp_file, dry_run=dry_run)
+                self.assertEqual(cm.exception.errno, errno.ENOTDIR)
+                self.assertEqual(cm.exception.filename, tmp_file)
+                self.assertFalse(os.path.exists(f'{TESTFN}.zip'))
+
     ### shutil.unpack_archive
 
     def check_unpack_archive(self, format, **kwargs):
@@ -2025,6 +2153,14 @@ def setUp(self):
         self.curdir = os.curdir
         self.ext = ".EXE"
 
+    def to_text_type(self, s):
+        '''
+        In this class we're testing with str, so convert s to a str
+        '''
+        if isinstance(s, bytes):
+            return s.decode()
+        return s
+
     def test_basic(self):
         # Given an EXE in a directory, it should be returned.
         rv = shutil.which(self.file, path=self.dir)
@@ -2212,9 +2348,9 @@ def test_empty_path_no_PATH(self):
 
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
     def test_pathext(self):
-        ext = ".xyz"
+        ext = self.to_text_type(".xyz")
         temp_filexyz = tempfile.NamedTemporaryFile(dir=self.temp_dir,
-                                                   prefix="Tmp2", suffix=ext)
+                                                   prefix=self.to_text_type("Tmp2"), suffix=ext)
         os.chmod(temp_filexyz.name, stat.S_IXUSR)
         self.addCleanup(temp_filexyz.close)
 
@@ -2223,16 +2359,16 @@ def test_pathext(self):
         program = os.path.splitext(program)[0]
 
         with os_helper.EnvironmentVarGuard() as env:
-            env['PATHEXT'] = ext
+            env['PATHEXT'] = ext if isinstance(ext, str) else ext.decode()
             rv = shutil.which(program, path=self.temp_dir)
             self.assertEqual(rv, temp_filexyz.name)
 
     # Issue 40592: See https://bugs.python.org/issue40592
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
     def test_pathext_with_empty_str(self):
-        ext = ".xyz"
+        ext = self.to_text_type(".xyz")
         temp_filexyz = tempfile.NamedTemporaryFile(dir=self.temp_dir,
-                                                   prefix="Tmp2", suffix=ext)
+                                                   prefix=self.to_text_type("Tmp2"), suffix=ext)
         self.addCleanup(temp_filexyz.close)
 
         # strip path and extension
@@ -2240,7 +2376,7 @@ def test_pathext_with_empty_str(self):
         program = os.path.splitext(program)[0]
 
         with os_helper.EnvironmentVarGuard() as env:
-            env['PATHEXT'] = f"{ext};"  # note the ;
+            env['PATHEXT'] = f"{ext if isinstance(ext, str) else ext.decode()};"  # note the ;
             rv = shutil.which(program, path=self.temp_dir)
             self.assertEqual(rv, temp_filexyz.name)
 
@@ -2248,13 +2384,14 @@ def test_pathext_with_empty_str(self):
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
     def test_pathext_applied_on_files_in_path(self):
         with os_helper.EnvironmentVarGuard() as env:
-            env["PATH"] = self.temp_dir
+            env["PATH"] = self.temp_dir if isinstance(self.temp_dir, str) else self.temp_dir.decode()
             env["PATHEXT"] = ".test"
 
-            test_path = pathlib.Path(self.temp_dir) / "test_program.test"
-            test_path.touch(mode=0o755)
+            test_path = os.path.join(self.temp_dir, self.to_text_type("test_program.test"))
+            open(test_path, 'w').close()
+            os.chmod(test_path, 0o755)
 
-            self.assertEqual(shutil.which("test_program"), str(test_path))
+            self.assertEqual(shutil.which(self.to_text_type("test_program")), test_path)
 
     # See GH-75586
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
@@ -2270,6 +2407,50 @@ def test_win_path_needs_curdir(self):
             self.assertFalse(shutil._win_path_needs_curdir('dontcare', os.X_OK))
             need_curdir_mock.assert_called_once_with('dontcare')
 
+    # See GH-109590
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_pathext_preferred_for_execute(self):
+        with os_helper.EnvironmentVarGuard() as env:
+            env["PATH"] = self.temp_dir if isinstance(self.temp_dir, str) else self.temp_dir.decode()
+            env["PATHEXT"] = ".test"
+
+            exe = os.path.join(self.temp_dir, self.to_text_type("test.exe"))
+            open(exe, 'w').close()
+            os.chmod(exe, 0o755)
+
+            # default behavior allows a direct match if nothing in PATHEXT matches
+            self.assertEqual(shutil.which(self.to_text_type("test.exe")), exe)
+
+            dot_test = os.path.join(self.temp_dir, self.to_text_type("test.exe.test"))
+            open(dot_test, 'w').close()
+            os.chmod(dot_test, 0o755)
+
+            # now we have a PATHEXT match, so it take precedence
+            self.assertEqual(shutil.which(self.to_text_type("test.exe")), dot_test)
+
+            # but if we don't use os.X_OK we don't change the order based off PATHEXT
+            # and therefore get the direct match.
+            self.assertEqual(shutil.which(self.to_text_type("test.exe"), mode=os.F_OK), exe)
+
+    # See GH-109590
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_pathext_given_extension_preferred(self):
+        with os_helper.EnvironmentVarGuard() as env:
+            env["PATH"] = self.temp_dir if isinstance(self.temp_dir, str) else self.temp_dir.decode()
+            env["PATHEXT"] = ".exe2;.exe"
+
+            exe = os.path.join(self.temp_dir, self.to_text_type("test.exe"))
+            open(exe, 'w').close()
+            os.chmod(exe, 0o755)
+
+            exe2 = os.path.join(self.temp_dir, self.to_text_type("test.exe2"))
+            open(exe2, 'w').close()
+            os.chmod(exe2, 0o755)
+
+            # even though .exe2 is preferred in PATHEXT, we matched directly to test.exe
+            self.assertEqual(shutil.which(self.to_text_type("test.exe")), exe)
+            self.assertEqual(shutil.which(self.to_text_type("test")), exe2)
+
 
 class TestWhichBytes(TestWhich):
     def setUp(self):
@@ -2277,9 +2458,18 @@ def setUp(self):
         self.dir = os.fsencode(self.dir)
         self.file = os.fsencode(self.file)
         self.temp_file.name = os.fsencode(self.temp_file.name)
+        self.temp_dir = os.fsencode(self.temp_dir)
         self.curdir = os.fsencode(self.curdir)
         self.ext = os.fsencode(self.ext)
 
+    def to_text_type(self, s):
+        '''
+        In this class we're testing with bytes, so convert s to a bytes
+        '''
+        if isinstance(s, str):
+            return s.encode()
+        return s
+
 
 class TestMove(BaseTest, unittest.TestCase):
 
@@ -2739,7 +2929,7 @@ def test_regular_copy(self):
     def test_same_file(self):
         self.addCleanup(self.reset)
         with self.get_files() as (src, dst):
-            with self.assertRaises(Exception):
+            with self.assertRaises((OSError, _GiveupOnFastCopy)):
                 self.zerocopy_fun(src, src)
         # Make sure src file is not corrupted.
         self.assertEqual(read_file(TESTFN, binary=True), self.FILEDATA)
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 25afd6aabe0751..acb7e9d4c6074d 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -745,6 +745,7 @@ def test_siginterrupt_on(self):
         interrupted = self.readpipe_interrupted(True)
         self.assertTrue(interrupted)
 
+    @support.requires_resource('walltime')
     def test_siginterrupt_off(self):
         # If a signal handler is installed and siginterrupt is called with
         # a false value for the second argument, when that signal arrives, it
@@ -1317,6 +1318,7 @@ def handler(signum, frame):
         # Python handler
         self.assertEqual(len(sigs), N, "Some signals were lost")
 
+    @unittest.skipIf(sys.platform == "darwin", "crashes due to system bug (FB13453490)")
     @unittest.skipUnless(hasattr(signal, "SIGUSR1"),
                          "test needs SIGUSR1")
     @threading_helper.requires_working_threading()
@@ -1338,7 +1340,7 @@ def set_interrupts():
                 num_sent_signals += 1
 
         def cycle_handlers():
-            while num_sent_signals < 100:
+            while num_sent_signals < 100 or num_received_signals < 1:
                 for i in range(20000):
                     # Cycle between a Python-defined and a non-Python handler
                     for handler in [custom_handler, signal.SIG_IGN]:
@@ -1371,7 +1373,7 @@ def cycle_handlers():
             if not ignored:
                 # Sanity check that some signals were received, but not all
                 self.assertGreater(num_received_signals, 0)
-            self.assertLess(num_received_signals, num_sent_signals)
+            self.assertLessEqual(num_received_signals, num_sent_signals)
         finally:
             do_stop = True
             t.join()
diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
index 9e701fd847acdf..33d0975bda8eaa 100644
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -465,10 +465,48 @@ def test_sitecustomize_executed(self):
             else:
                 self.fail("sitecustomize not imported automatically")
 
-    @test.support.requires_resource('network')
-    @test.support.system_must_validate_cert
+    @support.requires_subprocess()
+    def test_customization_modules_on_startup(self):
+        mod_names = [
+            'sitecustomize'
+        ]
+
+        if site.ENABLE_USER_SITE:
+            mod_names.append('usercustomize')
+
+        temp_dir = tempfile.mkdtemp()
+        self.addCleanup(os_helper.rmtree, temp_dir)
+
+        with EnvironmentVarGuard() as environ:
+            environ['PYTHONPATH'] = temp_dir
+
+            for module_name in mod_names:
+                os_helper.rmtree(temp_dir)
+                os.mkdir(temp_dir)
+
+                customize_path = os.path.join(temp_dir, f'{module_name}.py')
+                eyecatcher = f'EXECUTED_{module_name}'
+
+                with open(customize_path, 'w') as f:
+                    f.write(f'print("{eyecatcher}")')
+
+                output = subprocess.check_output([sys.executable, '-c', '""'])
+                self.assertIn(eyecatcher, output.decode('utf-8'))
+
+                # -S blocks any site-packages
+                output = subprocess.check_output([sys.executable, '-S', '-c', '""'])
+                self.assertNotIn(eyecatcher, output.decode('utf-8'))
+
+                # -s blocks user site-packages
+                if 'usercustomize' == module_name:
+                    output = subprocess.check_output([sys.executable, '-s', '-c', '""'])
+                    self.assertNotIn(eyecatcher, output.decode('utf-8'))
+
+
     @unittest.skipUnless(hasattr(urllib.request, "HTTPSHandler"),
                          'need SSL support to download license')
+    @test.support.requires_resource('network')
+    @test.support.system_must_validate_cert
     def test_license_exists_at_url(self):
         # This test is a bit fragile since it depends on the format of the
         # string displayed by license in the absence of a LICENSE file.
@@ -576,7 +614,7 @@ def _create_underpth_exe(self, lines, exe_pth=True):
                 _pth_file = os.path.splitext(exe_file)[0] + '._pth'
             else:
                 _pth_file = os.path.splitext(dll_file)[0] + '._pth'
-            with open(_pth_file, 'w') as f:
+            with open(_pth_file, 'w', encoding='utf8') as f:
                 for line in lines:
                     print(line, file=f)
             return exe_file
@@ -613,7 +651,7 @@ def test_underpth_basic(self):
             os.path.dirname(exe_file),
             pth_lines)
 
-        output = subprocess.check_output([exe_file, '-c',
+        output = subprocess.check_output([exe_file, '-X', 'utf8', '-c',
             'import sys; print("\\n".join(sys.path) if sys.flags.no_site else "")'
         ], encoding='utf-8', errors='surrogateescape')
         actual_sys_path = output.rstrip().split('\n')
diff --git a/Lib/test/test_smtplib.py b/Lib/test/test_smtplib.py
index b6d5b8c3d82580..f2e02dab1c3ca5 100644
--- a/Lib/test/test_smtplib.py
+++ b/Lib/test/test_smtplib.py
@@ -831,6 +831,7 @@ class SimSMTPChannel(smtpd.SMTPChannel):
     def __init__(self, extra_features, *args, **kw):
         self._extrafeatures = ''.join(
             [ "250-{0}\r\n".format(x) for x in extra_features ])
+        self.all_received_lines = []
         super(SimSMTPChannel, self).__init__(*args, **kw)
 
     # AUTH related stuff.  It would be nice if support for this were in smtpd.
@@ -845,6 +846,7 @@ def found_terminator(self):
                 self.smtp_state = self.COMMAND
                 self.push('%s %s' % (e.smtp_code, e.smtp_error))
             return
+        self.all_received_lines.append(self.received_lines)
         super().found_terminator()
 
 
@@ -1349,6 +1351,18 @@ def test_name_field_not_included_in_envelop_addresses(self):
         self.assertEqual(self.serv._addresses['from'], 'michael@example.com')
         self.assertEqual(self.serv._addresses['tos'], ['rene@example.com'])
 
+    def test_lowercase_mail_from_rcpt_to(self):
+        m = 'A test message'
+        smtp = smtplib.SMTP(
+            HOST, self.port, local_hostname='localhost',
+            timeout=support.LOOPBACK_TIMEOUT)
+        self.addCleanup(smtp.close)
+
+        smtp.sendmail('John', 'Sally', m)
+
+        self.assertIn(['mail from:<John> size=14'], self.serv._SMTPchannel.all_received_lines)
+        self.assertIn(['rcpt to:<Sally>'], self.serv._SMTPchannel.all_received_lines)
+
 
 class SimSMTPUTF8Server(SimSMTPServer):
 
diff --git a/Lib/test/test_smtpnet.py b/Lib/test/test_smtpnet.py
index 72f51cd8d81f59..2e0dc1aa276f35 100644
--- a/Lib/test/test_smtpnet.py
+++ b/Lib/test/test_smtpnet.py
@@ -61,6 +61,7 @@ def test_connect_default_port(self):
             server.ehlo()
             server.quit()
 
+    @support.requires_resource('walltime')
     def test_connect_using_sslcontext(self):
         context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         context.check_hostname = False
diff --git a/Lib/test/test_sndhdr.py b/Lib/test/test_sndhdr.py
deleted file mode 100644
index 4d97437f9072c2..00000000000000
--- a/Lib/test/test_sndhdr.py
+++ /dev/null
@@ -1,40 +0,0 @@
-import pickle
-import unittest
-from test.support import findfile
-from test.support import warnings_helper
-
-sndhdr = warnings_helper.import_deprecated("sndhdr")
-
-
-class TestFormats(unittest.TestCase):
-    def test_data(self):
-        for filename, expected in (
-            ('sndhdr.8svx', ('8svx', 0, 1, 0, 8)),
-            ('sndhdr.aifc', ('aifc', 44100, 2, 5, 16)),
-            ('sndhdr.aiff', ('aiff', 44100, 2, 5, 16)),
-            ('sndhdr.au', ('au', 44100, 2, 5.0, 16)),
-            ('sndhdr.hcom', ('hcom', 22050.0, 1, -1, 8)),
-            ('sndhdr.sndt', ('sndt', 44100, 1, 5, 8)),
-            ('sndhdr.voc', ('voc', 0, 1, -1, 8)),
-            ('sndhdr.wav', ('wav', 44100, 2, 5, 16)),
-        ):
-            filename = findfile(filename, subdir="sndhdrdata")
-            what = sndhdr.what(filename)
-            self.assertNotEqual(what, None, filename)
-            self.assertSequenceEqual(what, expected)
-            self.assertEqual(what.filetype, expected[0])
-            self.assertEqual(what.framerate, expected[1])
-            self.assertEqual(what.nchannels, expected[2])
-            self.assertEqual(what.nframes, expected[3])
-            self.assertEqual(what.sampwidth, expected[4])
-
-    def test_pickleable(self):
-        filename = findfile('sndhdr.aifc', subdir="sndhdrdata")
-        what = sndhdr.what(filename)
-        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            dump = pickle.dumps(what, proto)
-            self.assertEqual(pickle.loads(dump), what)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 68cdc6eaa91375..4eb5af99d6674c 100644
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -215,24 +215,6 @@ def setUp(self):
         self.serv = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
         self.port = socket_helper.bind_port(self.serv)
 
-class ThreadSafeCleanupTestCase:
-    """Subclass of unittest.TestCase with thread-safe cleanup methods.
-
-    This subclass protects the addCleanup() and doCleanups() methods
-    with a recursive lock.
-    """
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self._cleanup_lock = threading.RLock()
-
-    def addCleanup(self, *args, **kwargs):
-        with self._cleanup_lock:
-            return super().addCleanup(*args, **kwargs)
-
-    def doCleanups(self, *args, **kwargs):
-        with self._cleanup_lock:
-            return super().doCleanups(*args, **kwargs)
 
 class SocketCANTest(unittest.TestCase):
 
@@ -626,8 +608,7 @@ def setUp(self):
         self.serv.listen()
 
 
-class ThreadedSocketTestMixin(ThreadSafeCleanupTestCase, SocketTestBase,
-                              ThreadableTest):
+class ThreadedSocketTestMixin(SocketTestBase, ThreadableTest):
     """Mixin to add client socket and allow client/server tests.
 
     Client socket is self.cli and its address is self.cli_addr.  See
@@ -1101,7 +1082,20 @@ def testInterfaceNameIndex(self):
                          'socket.if_indextoname() not available.')
     def testInvalidInterfaceIndexToName(self):
         self.assertRaises(OSError, socket.if_indextoname, 0)
+        self.assertRaises(OverflowError, socket.if_indextoname, -1)
+        self.assertRaises(OverflowError, socket.if_indextoname, 2**1000)
         self.assertRaises(TypeError, socket.if_indextoname, '_DEADBEEF')
+        if hasattr(socket, 'if_nameindex'):
+            indices = dict(socket.if_nameindex())
+            for index in indices:
+                index2 = index + 2**32
+                if index2 not in indices:
+                    with self.assertRaises((OverflowError, OSError)):
+                        socket.if_indextoname(index2)
+            for index in 2**32-1, 2**64-1:
+                if index not in indices:
+                    with self.assertRaises((OverflowError, OSError)):
+                        socket.if_indextoname(index)
 
     @unittest.skipUnless(hasattr(socket, 'if_nametoindex'),
                          'socket.if_nametoindex() not available.')
@@ -2566,7 +2560,7 @@ def testHyperVConstants(self):
         socket.HV_GUID_BROADCAST
         socket.HV_GUID_CHILDREN
         socket.HV_GUID_LOOPBACK
-        socket.HV_GUID_LOOPBACK
+        socket.HV_GUID_PARENT
 
     def testCreateHyperVSocketWithUnknownProtoFailure(self):
         expected = r"\[WinError 10041\]"
@@ -2813,7 +2807,7 @@ def _testRecvFromNegative(self):
 # here assumes that datagram delivery on the local machine will be
 # reliable.
 
-class SendrecvmsgBase(ThreadSafeCleanupTestCase):
+class SendrecvmsgBase:
     # Base class for sendmsg()/recvmsg() tests.
 
     # Time in seconds to wait before considering a test failed, or
@@ -4679,7 +4673,6 @@ def testInterruptedRecvmsgIntoTimeout(self):
 @unittest.skipUnless(hasattr(signal, "alarm") or hasattr(signal, "setitimer"),
                      "Don't have signal.alarm or signal.setitimer")
 class InterruptedSendTimeoutTest(InterruptedTimeoutBase,
-                                 ThreadSafeCleanupTestCase,
                                  SocketListeningTestMixin, TCPTestBase):
     # Test interrupting the interruptible send*() methods with signals
     # when a timeout is set.
@@ -5288,6 +5281,7 @@ def mocked_socket_module(self):
         finally:
             socket.socket = old_socket
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_connect(self):
         port = socket_helper.find_unused_port()
         cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@@ -5296,6 +5290,7 @@ def test_connect(self):
             cli.connect((HOST, port))
         self.assertEqual(cm.exception.errno, errno.ECONNREFUSED)
 
+    @socket_helper.skip_if_tcp_blackhole
     def test_create_connection(self):
         # Issue #9792: errors raised by create_connection() should have
         # a proper errno attribute.
@@ -5354,6 +5349,7 @@ def test_create_connection_timeout(self):
 
 
 class NetworkConnectionAttributesTest(SocketTCPTest, ThreadableTest):
+    cli = None
 
     def __init__(self, methodName='runTest'):
         SocketTCPTest.__init__(self, methodName=methodName)
@@ -5363,7 +5359,8 @@ def clientSetUp(self):
         self.source_port = socket_helper.find_unused_port()
 
     def clientTearDown(self):
-        self.cli.close()
+        if self.cli is not None:
+            self.cli.close()
         self.cli = None
         ThreadableTest.clientTearDown(self)
 
@@ -6472,12 +6469,16 @@ def test_sha256(self):
                 self.assertEqual(op.recv(512), expected)
 
     def test_hmac_sha1(self):
-        expected = bytes.fromhex("effcdf6ae5eb2fa2d27416d5f184df9c259a7c79")
+        # gh-109396: In FIPS mode, Linux 6.5 requires a key
+        # of at least 112 bits. Use a key of 152 bits.
+        key = b"Python loves AF_ALG"
+        data = b"what do ya want for nothing?"
+        expected = bytes.fromhex("193dbb43c6297b47ea6277ec0ce67119a3f3aa66")
         with self.create_alg('hash', 'hmac(sha1)') as algo:
-            algo.setsockopt(socket.SOL_ALG, socket.ALG_SET_KEY, b"Jefe")
+            algo.setsockopt(socket.SOL_ALG, socket.ALG_SET_KEY, key)
             op, _ = algo.accept()
             with op:
-                op.sendall(b"what do ya want for nothing?")
+                op.sendall(data)
                 self.assertEqual(op.recv(512), expected)
 
     # Although it should work with 3.19 and newer the test blocks on
diff --git a/Lib/test/test_socketserver.py b/Lib/test/test_socketserver.py
index c81d559cde315d..0f62f9eb200e42 100644
--- a/Lib/test/test_socketserver.py
+++ b/Lib/test/test_socketserver.py
@@ -32,11 +32,6 @@
 HAVE_FORKING = test.support.has_fork_support
 requires_forking = unittest.skipUnless(HAVE_FORKING, 'requires forking')
 
-def signal_alarm(n):
-    """Call signal.alarm when it exists (i.e. not on Windows)."""
-    if hasattr(signal, 'alarm'):
-        signal.alarm(n)
-
 # Remember real select() to avoid interferences with mocking
 _real_select = select.select
 
@@ -68,12 +63,10 @@ class SocketServerTest(unittest.TestCase):
     """Test all socket servers."""
 
     def setUp(self):
-        signal_alarm(60)  # Kill deadlocks after 60 seconds.
         self.port_seed = 0
         self.test_files = []
 
     def tearDown(self):
-        signal_alarm(0)  # Didn't deadlock.
         reap_children()
 
         for fn in self.test_files:
diff --git a/Lib/test/test_source_encoding.py b/Lib/test/test_source_encoding.py
index b05173ad00d442..61b00778f8361c 100644
--- a/Lib/test/test_source_encoding.py
+++ b/Lib/test/test_source_encoding.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 
 import unittest
-from test.support import script_helper, captured_stdout, requires_subprocess
+from test.support import script_helper, captured_stdout, requires_subprocess, requires_resource
 from test.support.os_helper import TESTFN, unlink, rmtree
 from test.support.import_helper import unload
 import importlib
@@ -68,6 +68,7 @@ def test_issue7820(self):
     def test_20731(self):
         sub = subprocess.Popen([sys.executable,
                         os.path.join(os.path.dirname(__file__),
+                                     'tokenizedata',
                                      'coding20731.py')],
                         stderr=subprocess.PIPE)
         err = sub.communicate()[1]
@@ -100,10 +101,10 @@ def test_bad_coding2(self):
         self.verify_bad_module(module_name)
 
     def verify_bad_module(self, module_name):
-        self.assertRaises(SyntaxError, __import__, 'test.' + module_name)
+        self.assertRaises(SyntaxError, __import__, 'test.tokenizedata.' + module_name)
 
         path = os.path.dirname(__file__)
-        filename = os.path.join(path, module_name + '.py')
+        filename = os.path.join(path, 'tokenizedata', module_name + '.py')
         with open(filename, "rb") as fp:
             bytes = fp.read()
         self.assertRaises(SyntaxError, compile, bytes, filename, 'exec')
@@ -250,10 +251,11 @@ def test_crcrcrlf2(self):
 class UTF8ValidatorTest(unittest.TestCase):
     @unittest.skipIf(not sys.platform.startswith("linux"),
                      "Too slow to run on non-Linux platforms")
+    @requires_resource('cpu')
     def test_invalid_utf8(self):
         # This is a port of test_utf8_decode_invalid_sequences in
         # test_unicode.py to exercise the separate utf8 validator in
-        # Parser/tokenizer.c used when reading source files.
+        # Parser/tokenizer/helpers.c used when reading source files.
 
         # That file is written using low-level C file I/O, so the only way to
         # test it is to write actual files to disk.
diff --git a/Lib/test/test_spwd.py b/Lib/test/test_spwd.py
deleted file mode 100644
index 50766c25482a61..00000000000000
--- a/Lib/test/test_spwd.py
+++ /dev/null
@@ -1,77 +0,0 @@
-import os
-import unittest
-from test.support import import_helper
-import warnings
-
-
-with warnings.catch_warnings():
-    warnings.simplefilter("ignore", DeprecationWarning)
-    spwd = import_helper.import_module('spwd')
-
-
-@unittest.skipUnless(hasattr(os, 'geteuid') and os.geteuid() == 0,
-                     'root privileges required')
-class TestSpwdRoot(unittest.TestCase):
-
-    def test_getspall(self):
-        entries = spwd.getspall()
-        self.assertIsInstance(entries, list)
-        for entry in entries:
-            self.assertIsInstance(entry, spwd.struct_spwd)
-
-    def test_getspnam(self):
-        entries = spwd.getspall()
-        if not entries:
-            self.skipTest('empty shadow password database')
-        random_name = entries[0].sp_namp
-        entry = spwd.getspnam(random_name)
-        self.assertIsInstance(entry, spwd.struct_spwd)
-        self.assertEqual(entry.sp_namp, random_name)
-        self.assertEqual(entry.sp_namp, entry[0])
-        self.assertEqual(entry.sp_namp, entry.sp_nam)
-        self.assertIsInstance(entry.sp_pwdp, str)
-        self.assertEqual(entry.sp_pwdp, entry[1])
-        self.assertEqual(entry.sp_pwdp, entry.sp_pwd)
-        self.assertIsInstance(entry.sp_lstchg, int)
-        self.assertEqual(entry.sp_lstchg, entry[2])
-        self.assertIsInstance(entry.sp_min, int)
-        self.assertEqual(entry.sp_min, entry[3])
-        self.assertIsInstance(entry.sp_max, int)
-        self.assertEqual(entry.sp_max, entry[4])
-        self.assertIsInstance(entry.sp_warn, int)
-        self.assertEqual(entry.sp_warn, entry[5])
-        self.assertIsInstance(entry.sp_inact, int)
-        self.assertEqual(entry.sp_inact, entry[6])
-        self.assertIsInstance(entry.sp_expire, int)
-        self.assertEqual(entry.sp_expire, entry[7])
-        self.assertIsInstance(entry.sp_flag, int)
-        self.assertEqual(entry.sp_flag, entry[8])
-        with self.assertRaises(KeyError) as cx:
-            spwd.getspnam('invalid user name')
-        self.assertEqual(str(cx.exception), "'getspnam(): name not found'")
-        self.assertRaises(TypeError, spwd.getspnam)
-        self.assertRaises(TypeError, spwd.getspnam, 0)
-        self.assertRaises(TypeError, spwd.getspnam, random_name, 0)
-        try:
-            bytes_name = os.fsencode(random_name)
-        except UnicodeEncodeError:
-            pass
-        else:
-            self.assertRaises(TypeError, spwd.getspnam, bytes_name)
-
-
-@unittest.skipUnless(hasattr(os, 'geteuid') and os.geteuid() != 0,
-                     'non-root user required')
-class TestSpwdNonRoot(unittest.TestCase):
-
-    def test_getspnam_exception(self):
-        name = 'bin'
-        try:
-            with self.assertRaises(PermissionError) as cm:
-                spwd.getspnam(name)
-        except KeyError as exc:
-            self.skipTest("spwd entry %r doesn't exist: %s" % (name, exc))
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_sqlite3/test_backup.py b/Lib/test/test_sqlite3/test_backup.py
index 384dd9229ab341..c7400d8b2165e6 100644
--- a/Lib/test/test_sqlite3/test_backup.py
+++ b/Lib/test/test_sqlite3/test_backup.py
@@ -1,6 +1,8 @@
 import sqlite3 as sqlite
 import unittest
 
+from .util import memory_database
+
 
 class BackupTests(unittest.TestCase):
     def setUp(self):
@@ -32,34 +34,32 @@ def test_bad_target_same_connection(self):
             self.cx.backup(self.cx)
 
     def test_bad_target_closed_connection(self):
-        bck = sqlite.connect(':memory:')
-        bck.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            self.cx.backup(bck)
+        with memory_database() as bck:
+            bck.close()
+            with self.assertRaises(sqlite.ProgrammingError):
+                self.cx.backup(bck)
 
     def test_bad_source_closed_connection(self):
-        bck = sqlite.connect(':memory:')
-        source = sqlite.connect(":memory:")
-        source.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            source.backup(bck)
+        with memory_database() as bck:
+            source = sqlite.connect(":memory:")
+            source.close()
+            with self.assertRaises(sqlite.ProgrammingError):
+                source.backup(bck)
 
     def test_bad_target_in_transaction(self):
-        bck = sqlite.connect(':memory:')
-        bck.execute('CREATE TABLE bar (key INTEGER)')
-        bck.executemany('INSERT INTO bar (key) VALUES (?)', [(3,), (4,)])
-        with self.assertRaises(sqlite.OperationalError) as cm:
-            self.cx.backup(bck)
-        if sqlite.sqlite_version_info < (3, 8, 8):
-            self.assertEqual(str(cm.exception), 'target is in transaction')
+        with memory_database() as bck:
+            bck.execute('CREATE TABLE bar (key INTEGER)')
+            bck.executemany('INSERT INTO bar (key) VALUES (?)', [(3,), (4,)])
+            with self.assertRaises(sqlite.OperationalError) as cm:
+                self.cx.backup(bck)
 
     def test_keyword_only_args(self):
         with self.assertRaises(TypeError):
-            with sqlite.connect(':memory:') as bck:
+            with memory_database() as bck:
                 self.cx.backup(bck, 1)
 
     def test_simple(self):
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck)
             self.verify_backup(bck)
 
@@ -69,7 +69,7 @@ def test_progress(self):
         def progress(status, remaining, total):
             journal.append(status)
 
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, pages=1, progress=progress)
             self.verify_backup(bck)
 
@@ -83,7 +83,7 @@ def test_progress_all_pages_at_once_1(self):
         def progress(status, remaining, total):
             journal.append(remaining)
 
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, progress=progress)
             self.verify_backup(bck)
 
@@ -96,7 +96,7 @@ def test_progress_all_pages_at_once_2(self):
         def progress(status, remaining, total):
             journal.append(remaining)
 
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, pages=-1, progress=progress)
             self.verify_backup(bck)
 
@@ -105,7 +105,7 @@ def progress(status, remaining, total):
 
     def test_non_callable_progress(self):
         with self.assertRaises(TypeError) as cm:
-            with sqlite.connect(':memory:') as bck:
+            with memory_database() as bck:
                 self.cx.backup(bck, pages=1, progress='bar')
         self.assertEqual(str(cm.exception), 'progress argument must be a callable')
 
@@ -118,7 +118,7 @@ def progress(status, remaining, total):
                 self.cx.commit()
             journal.append(remaining)
 
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, pages=1, progress=progress)
             self.verify_backup(bck)
 
@@ -137,17 +137,17 @@ def progress(status, remaining, total):
             raise SystemError('nearly out of space')
 
         with self.assertRaises(SystemError) as err:
-            with sqlite.connect(':memory:') as bck:
+            with memory_database() as bck:
                 self.cx.backup(bck, progress=progress)
         self.assertEqual(str(err.exception), 'nearly out of space')
 
     def test_database_source_name(self):
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, name='main')
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, name='temp')
         with self.assertRaises(sqlite.OperationalError) as cm:
-            with sqlite.connect(':memory:') as bck:
+            with memory_database() as bck:
                 self.cx.backup(bck, name='non-existing')
         self.assertIn("unknown database", str(cm.exception))
 
@@ -155,7 +155,7 @@ def test_database_source_name(self):
         self.cx.execute('CREATE TABLE attached_db.foo (key INTEGER)')
         self.cx.executemany('INSERT INTO attached_db.foo (key) VALUES (?)', [(3,), (4,)])
         self.cx.commit()
-        with sqlite.connect(':memory:') as bck:
+        with memory_database() as bck:
             self.cx.backup(bck, name='attached_db')
             self.verify_backup(bck)
 
diff --git a/Lib/test/test_sqlite3/test_cli.py b/Lib/test/test_sqlite3/test_cli.py
index d374f8ee4fc8d3..303f9e03b5383f 100644
--- a/Lib/test/test_sqlite3/test_cli.py
+++ b/Lib/test/test_sqlite3/test_cli.py
@@ -1,42 +1,35 @@
 """sqlite3 CLI tests."""
-
-import sqlite3 as sqlite
-import subprocess
-import sys
+import sqlite3
 import unittest
 
-from test.support import SHORT_TIMEOUT, requires_subprocess
+from sqlite3.__main__ import main as cli
 from test.support.os_helper import TESTFN, unlink
+from test.support import captured_stdout, captured_stderr, captured_stdin
 
 
-@requires_subprocess()
 class CommandLineInterface(unittest.TestCase):
 
     def _do_test(self, *args, expect_success=True):
-        with subprocess.Popen(
-            [sys.executable, "-Xutf8", "-m", "sqlite3", *args],
-            encoding="utf-8",
-            bufsize=0,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-        ) as proc:
-            proc.wait()
-            if expect_success == bool(proc.returncode):
-                self.fail("".join(proc.stderr))
-            stdout = proc.stdout.read()
-            stderr = proc.stderr.read()
-            if expect_success:
-                self.assertEqual(stderr, "")
-            else:
-                self.assertEqual(stdout, "")
-            return stdout, stderr
+        with (
+            captured_stdout() as out,
+            captured_stderr() as err,
+            self.assertRaises(SystemExit) as cm
+        ):
+            cli(args)
+        return out.getvalue(), err.getvalue(), cm.exception.code
 
     def expect_success(self, *args):
-        out, _ = self._do_test(*args)
+        out, err, code = self._do_test(*args)
+        self.assertEqual(code, 0,
+                         "\n".join([f"Unexpected failure: {args=}", out, err]))
+        self.assertEqual(err, "")
         return out
 
     def expect_failure(self, *args):
-        _, err = self._do_test(*args, expect_success=False)
+        out, err, code = self._do_test(*args, expect_success=False)
+        self.assertNotEqual(code, 0,
+                            "\n".join([f"Unexpected failure: {args=}", out, err]))
+        self.assertEqual(out, "")
         return err
 
     def test_cli_help(self):
@@ -45,7 +38,7 @@ def test_cli_help(self):
 
     def test_cli_version(self):
         out = self.expect_success("-v")
-        self.assertIn(sqlite.sqlite_version, out)
+        self.assertIn(sqlite3.sqlite_version, out)
 
     def test_cli_execute_sql(self):
         out = self.expect_success(":memory:", "select 1")
@@ -68,87 +61,94 @@ def test_cli_on_disk_db(self):
         self.assertIn("(0,)", out)
 
 
-@requires_subprocess()
 class InteractiveSession(unittest.TestCase):
-    TIMEOUT = SHORT_TIMEOUT / 10.
     MEMORY_DB_MSG = "Connected to a transient in-memory database"
     PS1 = "sqlite> "
     PS2 = "... "
 
-    def start_cli(self, *args):
-        return subprocess.Popen(
-            [sys.executable, "-Xutf8", "-m", "sqlite3", *args],
-            encoding="utf-8",
-            bufsize=0,
-            stdin=subprocess.PIPE,
-            # Note: the banner is printed to stderr, the prompt to stdout.
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-        )
-
-    def expect_success(self, proc):
-        proc.wait()
-        if proc.returncode:
-            self.fail("".join(proc.stderr))
+    def run_cli(self, *args, commands=()):
+        with (
+            captured_stdin() as stdin,
+            captured_stdout() as stdout,
+            captured_stderr() as stderr,
+            self.assertRaises(SystemExit) as cm
+        ):
+            for cmd in commands:
+                stdin.write(cmd + "\n")
+            stdin.seek(0)
+            cli(args)
+
+        out = stdout.getvalue()
+        err = stderr.getvalue()
+        self.assertEqual(cm.exception.code, 0,
+                         f"Unexpected failure: {args=}\n{out}\n{err}")
+        return out, err
 
     def test_interact(self):
-        with self.start_cli() as proc:
-            out, err = proc.communicate(timeout=self.TIMEOUT)
-            self.assertIn(self.MEMORY_DB_MSG, err)
-            self.assertIn(self.PS1, out)
-            self.expect_success(proc)
+        out, err = self.run_cli()
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertTrue(out.endswith(self.PS1))
+        self.assertEqual(out.count(self.PS1), 1)
+        self.assertEqual(out.count(self.PS2), 0)
 
     def test_interact_quit(self):
-        with self.start_cli() as proc:
-            out, err = proc.communicate(input=".quit", timeout=self.TIMEOUT)
-            self.assertIn(self.MEMORY_DB_MSG, err)
-            self.assertIn(self.PS1, out)
-            self.expect_success(proc)
+        out, err = self.run_cli(commands=(".quit",))
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertTrue(out.endswith(self.PS1))
+        self.assertEqual(out.count(self.PS1), 1)
+        self.assertEqual(out.count(self.PS2), 0)
 
     def test_interact_version(self):
-        with self.start_cli() as proc:
-            out, err = proc.communicate(input=".version", timeout=self.TIMEOUT)
-            self.assertIn(self.MEMORY_DB_MSG, err)
-            self.assertIn(sqlite.sqlite_version, out)
-            self.expect_success(proc)
+        out, err = self.run_cli(commands=(".version",))
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertIn(sqlite3.sqlite_version + "\n", out)
+        self.assertTrue(out.endswith(self.PS1))
+        self.assertEqual(out.count(self.PS1), 2)
+        self.assertEqual(out.count(self.PS2), 0)
+        self.assertIn(sqlite3.sqlite_version, out)
 
     def test_interact_valid_sql(self):
-        with self.start_cli() as proc:
-            out, err = proc.communicate(input="select 1;",
-                                        timeout=self.TIMEOUT)
-            self.assertIn(self.MEMORY_DB_MSG, err)
-            self.assertIn("(1,)", out)
-            self.expect_success(proc)
+        out, err = self.run_cli(commands=("SELECT 1;",))
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertIn("(1,)\n", out)
+        self.assertTrue(out.endswith(self.PS1))
+        self.assertEqual(out.count(self.PS1), 2)
+        self.assertEqual(out.count(self.PS2), 0)
+
+    def test_interact_incomplete_multiline_sql(self):
+        out, err = self.run_cli(commands=("SELECT 1",))
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertTrue(out.endswith(self.PS2))
+        self.assertEqual(out.count(self.PS1), 1)
+        self.assertEqual(out.count(self.PS2), 1)
 
     def test_interact_valid_multiline_sql(self):
-        with self.start_cli() as proc:
-            out, err = proc.communicate(input="select 1\n;",
-                                        timeout=self.TIMEOUT)
-            self.assertIn(self.MEMORY_DB_MSG, err)
-            self.assertIn(self.PS2, out)
-            self.assertIn("(1,)", out)
-            self.expect_success(proc)
+        out, err = self.run_cli(commands=("SELECT 1\n;",))
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertIn(self.PS2, out)
+        self.assertIn("(1,)\n", out)
+        self.assertTrue(out.endswith(self.PS1))
+        self.assertEqual(out.count(self.PS1), 2)
+        self.assertEqual(out.count(self.PS2), 1)
 
     def test_interact_invalid_sql(self):
-        with self.start_cli() as proc:
-            out, err = proc.communicate(input="sel;", timeout=self.TIMEOUT)
-            self.assertIn(self.MEMORY_DB_MSG, err)
-            self.assertIn("OperationalError (SQLITE_ERROR)", err)
-            self.expect_success(proc)
+        out, err = self.run_cli(commands=("sel;",))
+        self.assertIn(self.MEMORY_DB_MSG, err)
+        self.assertIn("OperationalError (SQLITE_ERROR)", err)
+        self.assertTrue(out.endswith(self.PS1))
+        self.assertEqual(out.count(self.PS1), 2)
+        self.assertEqual(out.count(self.PS2), 0)
 
     def test_interact_on_disk_file(self):
         self.addCleanup(unlink, TESTFN)
-        with self.start_cli(TESTFN) as proc:
-            out, err = proc.communicate(input="create table t(t);",
-                                        timeout=self.TIMEOUT)
-            self.assertIn(TESTFN, err)
-            self.assertIn(self.PS1, out)
-            self.expect_success(proc)
-        with self.start_cli(TESTFN, "select count(t) from t") as proc:
-            out = proc.stdout.read()
-            err = proc.stderr.read()
-            self.assertIn("(0,)", out)
-            self.expect_success(proc)
+
+        out, err = self.run_cli(TESTFN, commands=("CREATE TABLE t(t);",))
+        self.assertIn(TESTFN, err)
+        self.assertTrue(out.endswith(self.PS1))
+
+        out, _ = self.run_cli(TESTFN, commands=("SELECT count(t) FROM t;",))
+        self.assertIn("(0,)\n", out)
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_sqlite3/test_dbapi.py b/Lib/test/test_sqlite3/test_dbapi.py
index 328b0467e7fa3d..f3efe0f52f4fd7 100644
--- a/Lib/test/test_sqlite3/test_dbapi.py
+++ b/Lib/test/test_sqlite3/test_dbapi.py
@@ -33,26 +33,14 @@
     SHORT_TIMEOUT, check_disallow_instantiation, requires_subprocess,
     is_emscripten, is_wasi
 )
+from test.support import gc_collect
 from test.support import threading_helper
 from _testcapi import INT_MAX, ULLONG_MAX
 from os import SEEK_SET, SEEK_CUR, SEEK_END
 from test.support.os_helper import TESTFN, TESTFN_UNDECODABLE, unlink, temp_dir, FakePath
 
-
-# Helper for temporary memory databases
-def memory_database(*args, **kwargs):
-    cx = sqlite.connect(":memory:", *args, **kwargs)
-    return contextlib.closing(cx)
-
-
-# Temporarily limit a database connection parameter
-@contextlib.contextmanager
-def cx_limit(cx, category=sqlite.SQLITE_LIMIT_SQL_LENGTH, limit=128):
-    try:
-        _prev = cx.setlimit(category, limit)
-        yield limit
-    finally:
-        cx.setlimit(category, _prev)
+from .util import memory_database, cx_limit
+from .util import MemoryDatabaseMixin
 
 
 class ModuleTests(unittest.TestCase):
@@ -165,6 +153,7 @@ def test_module_constants(self):
             "SQLITE_INTERNAL",
             "SQLITE_INTERRUPT",
             "SQLITE_IOERR",
+            "SQLITE_LIMIT_WORKER_THREADS",
             "SQLITE_LOCKED",
             "SQLITE_MISMATCH",
             "SQLITE_MISUSE",
@@ -172,6 +161,7 @@ def test_module_constants(self):
             "SQLITE_NOMEM",
             "SQLITE_NOTADB",
             "SQLITE_NOTFOUND",
+            "SQLITE_NOTICE",
             "SQLITE_OK",
             "SQLITE_PERM",
             "SQLITE_PRAGMA",
@@ -179,6 +169,7 @@ def test_module_constants(self):
             "SQLITE_RANGE",
             "SQLITE_READ",
             "SQLITE_READONLY",
+            "SQLITE_RECURSIVE",
             "SQLITE_REINDEX",
             "SQLITE_ROW",
             "SQLITE_SAVEPOINT",
@@ -187,6 +178,7 @@ def test_module_constants(self):
             "SQLITE_TOOBIG",
             "SQLITE_TRANSACTION",
             "SQLITE_UPDATE",
+            "SQLITE_WARNING",
             # Run-time limit categories
             "SQLITE_LIMIT_LENGTH",
             "SQLITE_LIMIT_SQL_LENGTH",
@@ -200,32 +192,43 @@ def test_module_constants(self):
             "SQLITE_LIMIT_VARIABLE_NUMBER",
             "SQLITE_LIMIT_TRIGGER_DEPTH",
         ]
-        if sqlite.sqlite_version_info >= (3, 7, 17):
-            consts += ["SQLITE_NOTICE", "SQLITE_WARNING"]
-        if sqlite.sqlite_version_info >= (3, 8, 3):
-            consts.append("SQLITE_RECURSIVE")
-        if sqlite.sqlite_version_info >= (3, 8, 7):
-            consts.append("SQLITE_LIMIT_WORKER_THREADS")
         consts += ["PARSE_DECLTYPES", "PARSE_COLNAMES"]
         # Extended result codes
         consts += [
             "SQLITE_ABORT_ROLLBACK",
+            "SQLITE_AUTH_USER",
             "SQLITE_BUSY_RECOVERY",
+            "SQLITE_BUSY_SNAPSHOT",
+            "SQLITE_CANTOPEN_CONVPATH",
             "SQLITE_CANTOPEN_FULLPATH",
             "SQLITE_CANTOPEN_ISDIR",
             "SQLITE_CANTOPEN_NOTEMPDIR",
+            "SQLITE_CONSTRAINT_CHECK",
+            "SQLITE_CONSTRAINT_COMMITHOOK",
+            "SQLITE_CONSTRAINT_FOREIGNKEY",
+            "SQLITE_CONSTRAINT_FUNCTION",
+            "SQLITE_CONSTRAINT_NOTNULL",
+            "SQLITE_CONSTRAINT_PRIMARYKEY",
+            "SQLITE_CONSTRAINT_ROWID",
+            "SQLITE_CONSTRAINT_TRIGGER",
+            "SQLITE_CONSTRAINT_UNIQUE",
+            "SQLITE_CONSTRAINT_VTAB",
             "SQLITE_CORRUPT_VTAB",
             "SQLITE_IOERR_ACCESS",
+            "SQLITE_IOERR_AUTH",
             "SQLITE_IOERR_BLOCKED",
             "SQLITE_IOERR_CHECKRESERVEDLOCK",
             "SQLITE_IOERR_CLOSE",
+            "SQLITE_IOERR_CONVPATH",
             "SQLITE_IOERR_DELETE",
             "SQLITE_IOERR_DELETE_NOENT",
             "SQLITE_IOERR_DIR_CLOSE",
             "SQLITE_IOERR_DIR_FSYNC",
             "SQLITE_IOERR_FSTAT",
             "SQLITE_IOERR_FSYNC",
+            "SQLITE_IOERR_GETTEMPPATH",
             "SQLITE_IOERR_LOCK",
+            "SQLITE_IOERR_MMAP",
             "SQLITE_IOERR_NOMEM",
             "SQLITE_IOERR_RDLOCK",
             "SQLITE_IOERR_READ",
@@ -237,50 +240,18 @@ def test_module_constants(self):
             "SQLITE_IOERR_SHORT_READ",
             "SQLITE_IOERR_TRUNCATE",
             "SQLITE_IOERR_UNLOCK",
+            "SQLITE_IOERR_VNODE",
             "SQLITE_IOERR_WRITE",
             "SQLITE_LOCKED_SHAREDCACHE",
+            "SQLITE_NOTICE_RECOVER_ROLLBACK",
+            "SQLITE_NOTICE_RECOVER_WAL",
+            "SQLITE_OK_LOAD_PERMANENTLY",
             "SQLITE_READONLY_CANTLOCK",
+            "SQLITE_READONLY_DBMOVED",
             "SQLITE_READONLY_RECOVERY",
+            "SQLITE_READONLY_ROLLBACK",
+            "SQLITE_WARNING_AUTOINDEX",
         ]
-        if sqlite.sqlite_version_info >= (3, 7, 16):
-            consts += [
-                "SQLITE_CONSTRAINT_CHECK",
-                "SQLITE_CONSTRAINT_COMMITHOOK",
-                "SQLITE_CONSTRAINT_FOREIGNKEY",
-                "SQLITE_CONSTRAINT_FUNCTION",
-                "SQLITE_CONSTRAINT_NOTNULL",
-                "SQLITE_CONSTRAINT_PRIMARYKEY",
-                "SQLITE_CONSTRAINT_TRIGGER",
-                "SQLITE_CONSTRAINT_UNIQUE",
-                "SQLITE_CONSTRAINT_VTAB",
-                "SQLITE_READONLY_ROLLBACK",
-            ]
-        if sqlite.sqlite_version_info >= (3, 7, 17):
-            consts += [
-                "SQLITE_IOERR_MMAP",
-                "SQLITE_NOTICE_RECOVER_ROLLBACK",
-                "SQLITE_NOTICE_RECOVER_WAL",
-            ]
-        if sqlite.sqlite_version_info >= (3, 8, 0):
-            consts += [
-                "SQLITE_BUSY_SNAPSHOT",
-                "SQLITE_IOERR_GETTEMPPATH",
-                "SQLITE_WARNING_AUTOINDEX",
-            ]
-        if sqlite.sqlite_version_info >= (3, 8, 1):
-            consts += ["SQLITE_CANTOPEN_CONVPATH", "SQLITE_IOERR_CONVPATH"]
-        if sqlite.sqlite_version_info >= (3, 8, 2):
-            consts.append("SQLITE_CONSTRAINT_ROWID")
-        if sqlite.sqlite_version_info >= (3, 8, 3):
-            consts.append("SQLITE_READONLY_DBMOVED")
-        if sqlite.sqlite_version_info >= (3, 8, 7):
-            consts.append("SQLITE_AUTH_USER")
-        if sqlite.sqlite_version_info >= (3, 9, 0):
-            consts.append("SQLITE_IOERR_VNODE")
-        if sqlite.sqlite_version_info >= (3, 10, 0):
-            consts.append("SQLITE_IOERR_AUTH")
-        if sqlite.sqlite_version_info >= (3, 14, 1):
-            consts.append("SQLITE_OK_LOAD_PERMANENTLY")
         if sqlite.sqlite_version_info >= (3, 21, 0):
             consts += [
                 "SQLITE_IOERR_BEGIN_ATOMIC",
@@ -330,8 +301,6 @@ def test_error_code_on_exception(self):
             self.assertEqual(e.sqlite_errorcode, err_code)
             self.assertTrue(e.sqlite_errorname.startswith("SQLITE_CANTOPEN"))
 
-    @unittest.skipIf(sqlite.sqlite_version_info <= (3, 7, 16),
-                     "Requires SQLite 3.7.16 or newer")
     def test_extended_error_code_on_exception(self):
         with memory_database() as con:
             with con:
@@ -345,9 +314,9 @@ def test_extended_error_code_on_exception(self):
             self.assertEqual(exc.sqlite_errorname, "SQLITE_CONSTRAINT_CHECK")
 
     def test_disallow_instantiation(self):
-        cx = sqlite.connect(":memory:")
-        check_disallow_instantiation(self, type(cx("select 1")))
-        check_disallow_instantiation(self, sqlite.Blob)
+        with memory_database() as cx:
+            check_disallow_instantiation(self, type(cx("select 1")))
+            check_disallow_instantiation(self, sqlite.Blob)
 
     def test_complete_statement(self):
         self.assertFalse(sqlite.complete_statement("select t"))
@@ -361,6 +330,7 @@ def setUp(self):
         cu = self.cx.cursor()
         cu.execute("create table test(id integer primary key, name text)")
         cu.execute("insert into test(name) values (?)", ("foo",))
+        cu.close()
 
     def tearDown(self):
         self.cx.close()
@@ -431,21 +401,22 @@ def test_exceptions(self):
 
     def test_in_transaction(self):
         # Can't use db from setUp because we want to test initial state.
-        cx = sqlite.connect(":memory:")
-        cu = cx.cursor()
-        self.assertEqual(cx.in_transaction, False)
-        cu.execute("create table transactiontest(id integer primary key, name text)")
-        self.assertEqual(cx.in_transaction, False)
-        cu.execute("insert into transactiontest(name) values (?)", ("foo",))
-        self.assertEqual(cx.in_transaction, True)
-        cu.execute("select name from transactiontest where name=?", ["foo"])
-        row = cu.fetchone()
-        self.assertEqual(cx.in_transaction, True)
-        cx.commit()
-        self.assertEqual(cx.in_transaction, False)
-        cu.execute("select name from transactiontest where name=?", ["foo"])
-        row = cu.fetchone()
-        self.assertEqual(cx.in_transaction, False)
+        with memory_database() as cx:
+            cu = cx.cursor()
+            self.assertEqual(cx.in_transaction, False)
+            cu.execute("create table transactiontest(id integer primary key, name text)")
+            self.assertEqual(cx.in_transaction, False)
+            cu.execute("insert into transactiontest(name) values (?)", ("foo",))
+            self.assertEqual(cx.in_transaction, True)
+            cu.execute("select name from transactiontest where name=?", ["foo"])
+            row = cu.fetchone()
+            self.assertEqual(cx.in_transaction, True)
+            cx.commit()
+            self.assertEqual(cx.in_transaction, False)
+            cu.execute("select name from transactiontest where name=?", ["foo"])
+            row = cu.fetchone()
+            self.assertEqual(cx.in_transaction, False)
+            cu.close()
 
     def test_in_transaction_ro(self):
         with self.assertRaises(AttributeError):
@@ -469,10 +440,9 @@ def test_connection_exceptions(self):
                 self.assertIs(getattr(sqlite, exc), getattr(self.cx, exc))
 
     def test_interrupt_on_closed_db(self):
-        cx = sqlite.connect(":memory:")
-        cx.close()
+        self.cx.close()
         with self.assertRaises(sqlite.ProgrammingError):
-            cx.interrupt()
+            self.cx.interrupt()
 
     def test_interrupt(self):
         self.assertIsNone(self.cx.interrupt())
@@ -540,29 +510,29 @@ def test_connection_init_good_isolation_levels(self):
                     self.assertEqual(cx.isolation_level, level)
 
     def test_connection_reinit(self):
-        db = ":memory:"
-        cx = sqlite.connect(db)
-        cx.text_factory = bytes
-        cx.row_factory = sqlite.Row
-        cu = cx.cursor()
-        cu.execute("create table foo (bar)")
-        cu.executemany("insert into foo (bar) values (?)",
-                       ((str(v),) for v in range(4)))
-        cu.execute("select bar from foo")
-
-        rows = [r for r in cu.fetchmany(2)]
-        self.assertTrue(all(isinstance(r, sqlite.Row) for r in rows))
-        self.assertEqual([r[0] for r in rows], [b"0", b"1"])
-
-        cx.__init__(db)
-        cx.execute("create table foo (bar)")
-        cx.executemany("insert into foo (bar) values (?)",
-                       ((v,) for v in ("a", "b", "c", "d")))
-
-        # This uses the old database, old row factory, but new text factory
-        rows = [r for r in cu.fetchall()]
-        self.assertTrue(all(isinstance(r, sqlite.Row) for r in rows))
-        self.assertEqual([r[0] for r in rows], ["2", "3"])
+        with memory_database() as cx:
+            cx.text_factory = bytes
+            cx.row_factory = sqlite.Row
+            cu = cx.cursor()
+            cu.execute("create table foo (bar)")
+            cu.executemany("insert into foo (bar) values (?)",
+                           ((str(v),) for v in range(4)))
+            cu.execute("select bar from foo")
+
+            rows = [r for r in cu.fetchmany(2)]
+            self.assertTrue(all(isinstance(r, sqlite.Row) for r in rows))
+            self.assertEqual([r[0] for r in rows], [b"0", b"1"])
+
+            cx.__init__(":memory:")
+            cx.execute("create table foo (bar)")
+            cx.executemany("insert into foo (bar) values (?)",
+                           ((v,) for v in ("a", "b", "c", "d")))
+
+            # This uses the old database, old row factory, but new text factory
+            rows = [r for r in cu.fetchall()]
+            self.assertTrue(all(isinstance(r, sqlite.Row) for r in rows))
+            self.assertEqual([r[0] for r in rows], ["2", "3"])
+            cu.close()
 
     def test_connection_bad_reinit(self):
         cx = sqlite.connect(":memory:")
@@ -601,6 +571,25 @@ def test_connection_config(self):
             with self.assertRaisesRegex(sqlite.IntegrityError, "constraint"):
                 cx.execute("insert into u values(0)")
 
+    def test_connect_positional_arguments(self):
+        regex = (
+            r"Passing more than 1 positional argument to sqlite3.connect\(\)"
+            " is deprecated. Parameters 'timeout', 'detect_types', "
+            "'isolation_level', 'check_same_thread', 'factory', "
+            "'cached_statements' and 'uri' will become keyword-only "
+            "parameters in Python 3.15."
+        )
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            cx = sqlite.connect(":memory:", 1.0)
+            cx.close()
+        self.assertEqual(cm.filename, __file__)
+
+    def test_connection_resource_warning(self):
+        with self.assertWarns(ResourceWarning):
+            cx = sqlite.connect(":memory:")
+            del cx
+            gc_collect()
+
 
 class UninitialisedConnectionTests(unittest.TestCase):
     def setUp(self):
@@ -1577,12 +1566,12 @@ def run(con, err):
             except sqlite.Error:
                 err.append("multi-threading not allowed")
 
-        con = sqlite.connect(":memory:", check_same_thread=False)
-        err = []
-        t = threading.Thread(target=run, kwargs={"con": con, "err": err})
-        t.start()
-        t.join()
-        self.assertEqual(len(err), 0, "\n".join(err))
+        with memory_database(check_same_thread=False) as con:
+            err = []
+            t = threading.Thread(target=run, kwargs={"con": con, "err": err})
+            t.start()
+            t.join()
+            self.assertEqual(len(err), 0, "\n".join(err))
 
 
 class ConstructorTests(unittest.TestCase):
@@ -1608,9 +1597,16 @@ def test_binary(self):
         b = sqlite.Binary(b"\0'")
 
 class ExtensionTests(unittest.TestCase):
+    def setUp(self):
+        self.con = sqlite.connect(":memory:")
+        self.cur = self.con.cursor()
+
+    def tearDown(self):
+        self.cur.close()
+        self.con.close()
+
     def test_script_string_sql(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
+        cur = self.cur
         cur.executescript("""
             -- bla bla
             /* a stupid comment */
@@ -1622,40 +1618,40 @@ def test_script_string_sql(self):
         self.assertEqual(res, 5)
 
     def test_script_syntax_error(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
         with self.assertRaises(sqlite.OperationalError):
-            cur.executescript("create table test(x); asdf; create table test2(x)")
+            self.cur.executescript("""
+                CREATE TABLE test(x);
+                asdf;
+                CREATE TABLE test2(x)
+            """)
 
     def test_script_error_normal(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
         with self.assertRaises(sqlite.OperationalError):
-            cur.executescript("create table test(sadfsadfdsa); select foo from hurz;")
+            self.cur.executescript("""
+                CREATE TABLE test(sadfsadfdsa);
+                SELECT foo FROM hurz;
+            """)
 
     def test_cursor_executescript_as_bytes(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
         with self.assertRaises(TypeError):
-            cur.executescript(b"create table test(foo); insert into test(foo) values (5);")
+            self.cur.executescript(b"""
+                CREATE TABLE test(foo);
+                INSERT INTO test(foo) VALUES (5);
+            """)
 
     def test_cursor_executescript_with_null_characters(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
         with self.assertRaises(ValueError):
-            cur.executescript("""
-                create table a(i);\0
-                insert into a(i) values (5);
-                """)
+            self.cur.executescript("""
+                CREATE TABLE a(i);\0
+                INSERT INTO a(i) VALUES (5);
+            """)
 
     def test_cursor_executescript_with_surrogates(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
         with self.assertRaises(UnicodeEncodeError):
-            cur.executescript("""
-                create table a(s);
-                insert into a(s) values ('\ud8ff');
-                """)
+            self.cur.executescript("""
+                CREATE TABLE a(s);
+                INSERT INTO a(s) VALUES ('\ud8ff');
+            """)
 
     def test_cursor_executescript_too_large_script(self):
         msg = "query string is too large"
@@ -1665,19 +1661,18 @@ def test_cursor_executescript_too_large_script(self):
                 cx.executescript("select 'too large'".ljust(lim+1))
 
     def test_cursor_executescript_tx_control(self):
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.execute("begin")
         self.assertTrue(con.in_transaction)
         con.executescript("select 1")
         self.assertFalse(con.in_transaction)
 
     def test_connection_execute(self):
-        con = sqlite.connect(":memory:")
-        result = con.execute("select 5").fetchone()[0]
+        result = self.con.execute("select 5").fetchone()[0]
         self.assertEqual(result, 5, "Basic test of Connection.execute")
 
     def test_connection_executemany(self):
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.execute("create table test(foo)")
         con.executemany("insert into test(foo) values (?)", [(3,), (4,)])
         result = con.execute("select foo from test order by foo").fetchall()
@@ -1685,47 +1680,44 @@ def test_connection_executemany(self):
         self.assertEqual(result[1][0], 4, "Basic test of Connection.executemany")
 
     def test_connection_executescript(self):
-        con = sqlite.connect(":memory:")
-        con.executescript("create table test(foo); insert into test(foo) values (5);")
+        con = self.con
+        con.executescript("""
+            CREATE TABLE test(foo);
+            INSERT INTO test(foo) VALUES (5);
+        """)
         result = con.execute("select foo from test").fetchone()[0]
         self.assertEqual(result, 5, "Basic test of Connection.executescript")
 
+
 class ClosedConTests(unittest.TestCase):
+    def check(self, fn, *args, **kwds):
+        regex = "Cannot operate on a closed database."
+        with self.assertRaisesRegex(sqlite.ProgrammingError, regex):
+            fn(*args, **kwds)
+
+    def setUp(self):
+        self.con = sqlite.connect(":memory:")
+        self.cur = self.con.cursor()
+        self.con.close()
+
     def test_closed_con_cursor(self):
-        con = sqlite.connect(":memory:")
-        con.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            cur = con.cursor()
+        self.check(self.con.cursor)
 
     def test_closed_con_commit(self):
-        con = sqlite.connect(":memory:")
-        con.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            con.commit()
+        self.check(self.con.commit)
 
     def test_closed_con_rollback(self):
-        con = sqlite.connect(":memory:")
-        con.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            con.rollback()
+        self.check(self.con.rollback)
 
     def test_closed_cur_execute(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
-        con.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            cur.execute("select 4")
+        self.check(self.cur.execute, "select 4")
 
     def test_closed_create_function(self):
-        con = sqlite.connect(":memory:")
-        con.close()
-        def f(x): return 17
-        with self.assertRaises(sqlite.ProgrammingError):
-            con.create_function("foo", 1, f)
+        def f(x):
+            return 17
+        self.check(self.con.create_function, "foo", 1, f)
 
     def test_closed_create_aggregate(self):
-        con = sqlite.connect(":memory:")
-        con.close()
         class Agg:
             def __init__(self):
                 pass
@@ -1733,34 +1725,25 @@ def step(self, x):
                 pass
             def finalize(self):
                 return 17
-        with self.assertRaises(sqlite.ProgrammingError):
-            con.create_aggregate("foo", 1, Agg)
+        self.check(self.con.create_aggregate, "foo", 1, Agg)
 
     def test_closed_set_authorizer(self):
-        con = sqlite.connect(":memory:")
-        con.close()
         def authorizer(*args):
             return sqlite.DENY
-        with self.assertRaises(sqlite.ProgrammingError):
-            con.set_authorizer(authorizer)
+        self.check(self.con.set_authorizer, authorizer)
 
     def test_closed_set_progress_callback(self):
-        con = sqlite.connect(":memory:")
-        con.close()
-        def progress(): pass
-        with self.assertRaises(sqlite.ProgrammingError):
-            con.set_progress_handler(progress, 100)
+        def progress():
+            pass
+        self.check(self.con.set_progress_handler, progress, 100)
 
     def test_closed_call(self):
-        con = sqlite.connect(":memory:")
-        con.close()
-        with self.assertRaises(sqlite.ProgrammingError):
-            con()
+        self.check(self.con)
+
 
-class ClosedCurTests(unittest.TestCase):
+class ClosedCurTests(MemoryDatabaseMixin, unittest.TestCase):
     def test_closed(self):
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
+        cur = self.cx.cursor()
         cur.close()
 
         for method_name in ("execute", "executemany", "executescript", "fetchall", "fetchmany", "fetchone"):
@@ -1871,7 +1854,7 @@ def test_on_conflict_replace(self):
 
 @requires_subprocess()
 class MultiprocessTests(unittest.TestCase):
-    CONNECTION_TIMEOUT = SHORT_TIMEOUT / 1000.  # Defaults to 30 ms
+    CONNECTION_TIMEOUT = 0  # Disable the busy timeout.
 
     def tearDown(self):
         unlink(TESTFN)
diff --git a/Lib/test/test_sqlite3/test_dump.py b/Lib/test/test_sqlite3/test_dump.py
index d0c24b9c60e613..14a18c1ad37102 100644
--- a/Lib/test/test_sqlite3/test_dump.py
+++ b/Lib/test/test_sqlite3/test_dump.py
@@ -1,17 +1,12 @@
 # Author: Paul Kippes <kippesp@gmail.com>
 
 import unittest
-import sqlite3 as sqlite
-from .test_dbapi import memory_database
 
+from .util import memory_database
+from .util import MemoryDatabaseMixin
 
-class DumpTests(unittest.TestCase):
-    def setUp(self):
-        self.cx = sqlite.connect(":memory:")
-        self.cu = self.cx.cursor()
 
-    def tearDown(self):
-        self.cx.close()
+class DumpTests(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_table_dump(self):
         expected_sqls = [
@@ -117,6 +112,26 @@ def __getitem__(self, index):
         got = list(self.cx.iterdump())
         self.assertEqual(expected, got)
 
+    def test_dump_virtual_tables(self):
+        # gh-64662
+        expected = [
+            "BEGIN TRANSACTION;",
+            "PRAGMA writable_schema=ON;",
+            ("INSERT INTO sqlite_master(type,name,tbl_name,rootpage,sql)"
+             "VALUES('table','test','test',0,'CREATE VIRTUAL TABLE test USING fts4(example)');"),
+            "CREATE TABLE 'test_content'(docid INTEGER PRIMARY KEY, 'c0example');",
+            "CREATE TABLE 'test_docsize'(docid INTEGER PRIMARY KEY, size BLOB);",
+            ("CREATE TABLE 'test_segdir'(level INTEGER,idx INTEGER,start_block INTEGER,"
+             "leaves_end_block INTEGER,end_block INTEGER,root BLOB,PRIMARY KEY(level, idx));"),
+            "CREATE TABLE 'test_segments'(blockid INTEGER PRIMARY KEY, block BLOB);",
+            "CREATE TABLE 'test_stat'(id INTEGER PRIMARY KEY, value BLOB);",
+            "PRAGMA writable_schema=OFF;",
+            "COMMIT;"
+        ]
+        self.cu.execute("CREATE VIRTUAL TABLE test USING fts4(example)")
+        actual = list(self.cx.iterdump())
+        self.assertEqual(expected, actual)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_sqlite3/test_factory.py b/Lib/test/test_sqlite3/test_factory.py
index 7c36135ecadccd..48d35b54a2e239 100644
--- a/Lib/test/test_sqlite3/test_factory.py
+++ b/Lib/test/test_sqlite3/test_factory.py
@@ -24,6 +24,9 @@
 import sqlite3 as sqlite
 from collections.abc import Sequence
 
+from .util import memory_database
+from .util import MemoryDatabaseMixin
+
 
 def dict_factory(cursor, row):
     d = {}
@@ -45,10 +48,12 @@ class OkFactory(sqlite.Connection):
             def __init__(self, *args, **kwargs):
                 sqlite.Connection.__init__(self, *args, **kwargs)
 
-        for factory in DefectFactory, OkFactory:
-            with self.subTest(factory=factory):
-                con = sqlite.connect(":memory:", factory=factory)
-                self.assertIsInstance(con, factory)
+        with memory_database(factory=OkFactory) as con:
+            self.assertIsInstance(con, OkFactory)
+        regex = "Base Connection.__init__ not called."
+        with self.assertRaisesRegex(sqlite.ProgrammingError, regex):
+            with memory_database(factory=DefectFactory) as con:
+                self.assertIsInstance(con, DefectFactory)
 
     def test_connection_factory_relayed_call(self):
         # gh-95132: keyword args must not be passed as positional args
@@ -57,26 +62,30 @@ def __init__(self, *args, **kwargs):
                 kwargs["isolation_level"] = None
                 super(Factory, self).__init__(*args, **kwargs)
 
-        con = sqlite.connect(":memory:", factory=Factory)
-        self.assertIsNone(con.isolation_level)
-        self.assertIsInstance(con, Factory)
+        with memory_database(factory=Factory) as con:
+            self.assertIsNone(con.isolation_level)
+            self.assertIsInstance(con, Factory)
 
     def test_connection_factory_as_positional_arg(self):
         class Factory(sqlite.Connection):
             def __init__(self, *args, **kwargs):
                 super(Factory, self).__init__(*args, **kwargs)
 
-        con = sqlite.connect(":memory:", 5.0, 0, None, True, Factory)
-        self.assertIsNone(con.isolation_level)
-        self.assertIsInstance(con, Factory)
+        regex = (
+            r"Passing more than 1 positional argument to _sqlite3.Connection\(\) "
+            r"is deprecated. Parameters 'timeout', 'detect_types', "
+            r"'isolation_level', 'check_same_thread', 'factory', "
+            r"'cached_statements' and 'uri' will become keyword-only "
+            r"parameters in Python 3.15."
+        )
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            with memory_database(5.0, 0, None, True, Factory) as con:
+                self.assertIsNone(con.isolation_level)
+                self.assertIsInstance(con, Factory)
+        self.assertEqual(cm.filename, __file__)
 
 
-class CursorFactoryTests(unittest.TestCase):
-    def setUp(self):
-        self.con = sqlite.connect(":memory:")
-
-    def tearDown(self):
-        self.con.close()
+class CursorFactoryTests(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_is_instance(self):
         cur = self.con.cursor()
@@ -94,9 +103,8 @@ def test_invalid_factory(self):
         # invalid callable returning non-cursor
         self.assertRaises(TypeError, self.con.cursor, lambda con: None)
 
-class RowFactoryTestsBackwardsCompat(unittest.TestCase):
-    def setUp(self):
-        self.con = sqlite.connect(":memory:")
+
+class RowFactoryTestsBackwardsCompat(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_is_produced_by_factory(self):
         cur = self.con.cursor(factory=MyCursor)
@@ -105,12 +113,12 @@ def test_is_produced_by_factory(self):
         self.assertIsInstance(row, dict)
         cur.close()
 
-    def tearDown(self):
-        self.con.close()
 
-class RowFactoryTests(unittest.TestCase):
+class RowFactoryTests(MemoryDatabaseMixin, unittest.TestCase):
+
     def setUp(self):
-        self.con = sqlite.connect(":memory:")
+        super().setUp()
+        self.con.row_factory = sqlite.Row
 
     def test_custom_factory(self):
         self.con.row_factory = lambda cur, row: list(row)
@@ -118,7 +126,6 @@ def test_custom_factory(self):
         self.assertIsInstance(row, list)
 
     def test_sqlite_row_index(self):
-        self.con.row_factory = sqlite.Row
         row = self.con.execute("select 1 as a_1, 2 as b").fetchone()
         self.assertIsInstance(row, sqlite.Row)
 
@@ -149,7 +156,6 @@ def test_sqlite_row_index(self):
             row[complex()]  # index must be int or string
 
     def test_sqlite_row_index_unicode(self):
-        self.con.row_factory = sqlite.Row
         row = self.con.execute("select 1 as \xff").fetchone()
         self.assertEqual(row["\xff"], 1)
         with self.assertRaises(IndexError):
@@ -159,7 +165,6 @@ def test_sqlite_row_index_unicode(self):
 
     def test_sqlite_row_slice(self):
         # A sqlite.Row can be sliced like a list.
-        self.con.row_factory = sqlite.Row
         row = self.con.execute("select 1, 2, 3, 4").fetchone()
         self.assertEqual(row[0:0], ())
         self.assertEqual(row[0:1], (1,))
@@ -176,8 +181,7 @@ def test_sqlite_row_slice(self):
         self.assertEqual(row[3:0:-2], (4, 2))
 
     def test_sqlite_row_iter(self):
-        """Checks if the row object is iterable"""
-        self.con.row_factory = sqlite.Row
+        # Checks if the row object is iterable.
         row = self.con.execute("select 1 as a, 2 as b").fetchone()
 
         # Is iterable in correct order and produces valid results:
@@ -189,23 +193,20 @@ def test_sqlite_row_iter(self):
         self.assertEqual(items, [1, 2])
 
     def test_sqlite_row_as_tuple(self):
-        """Checks if the row object can be converted to a tuple"""
-        self.con.row_factory = sqlite.Row
+        # Checks if the row object can be converted to a tuple.
         row = self.con.execute("select 1 as a, 2 as b").fetchone()
         t = tuple(row)
         self.assertEqual(t, (row['a'], row['b']))
 
     def test_sqlite_row_as_dict(self):
-        """Checks if the row object can be correctly converted to a dictionary"""
-        self.con.row_factory = sqlite.Row
+        # Checks if the row object can be correctly converted to a dictionary.
         row = self.con.execute("select 1 as a, 2 as b").fetchone()
         d = dict(row)
         self.assertEqual(d["a"], row["a"])
         self.assertEqual(d["b"], row["b"])
 
     def test_sqlite_row_hash_cmp(self):
-        """Checks if the row object compares and hashes correctly"""
-        self.con.row_factory = sqlite.Row
+        # Checks if the row object compares and hashes correctly.
         row_1 = self.con.execute("select 1 as a, 2 as b").fetchone()
         row_2 = self.con.execute("select 1 as a, 2 as b").fetchone()
         row_3 = self.con.execute("select 1 as a, 3 as b").fetchone()
@@ -238,30 +239,29 @@ def test_sqlite_row_hash_cmp(self):
         self.assertEqual(hash(row_1), hash(row_2))
 
     def test_sqlite_row_as_sequence(self):
-        """ Checks if the row object can act like a sequence """
-        self.con.row_factory = sqlite.Row
+        # Checks if the row object can act like a sequence.
         row = self.con.execute("select 1 as a, 2 as b").fetchone()
 
         as_tuple = tuple(row)
         self.assertEqual(list(reversed(row)), list(reversed(as_tuple)))
         self.assertIsInstance(row, Sequence)
 
+    def test_sqlite_row_keys(self):
+        # Checks if the row object can return a list of columns as strings.
+        row = self.con.execute("select 1 as a, 2 as b").fetchone()
+        self.assertEqual(row.keys(), ['a', 'b'])
+
     def test_fake_cursor_class(self):
         # Issue #24257: Incorrect use of PyObject_IsInstance() caused
         # segmentation fault.
         # Issue #27861: Also applies for cursor factory.
         class FakeCursor(str):
             __class__ = sqlite.Cursor
-        self.con.row_factory = sqlite.Row
         self.assertRaises(TypeError, self.con.cursor, FakeCursor)
         self.assertRaises(TypeError, sqlite.Row, FakeCursor(), ())
 
-    def tearDown(self):
-        self.con.close()
 
-class TextFactoryTests(unittest.TestCase):
-    def setUp(self):
-        self.con = sqlite.connect(":memory:")
+class TextFactoryTests(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_unicode(self):
         austria = "Österreich"
@@ -282,15 +282,17 @@ def test_custom(self):
         self.assertEqual(type(row[0]), str, "type of row[0] must be unicode")
         self.assertTrue(row[0].endswith("reich"), "column must contain original data")
 
-    def tearDown(self):
-        self.con.close()
 
 class TextFactoryTestsWithEmbeddedZeroBytes(unittest.TestCase):
+
     def setUp(self):
         self.con = sqlite.connect(":memory:")
         self.con.execute("create table test (value text)")
         self.con.execute("insert into test (value) values (?)", ("a\x00b",))
 
+    def tearDown(self):
+        self.con.close()
+
     def test_string(self):
         # text_factory defaults to str
         row = self.con.execute("select value from test").fetchone()
@@ -316,9 +318,6 @@ def test_custom(self):
         self.assertIs(type(row[0]), bytes)
         self.assertEqual(row[0], b"a\x00b")
 
-    def tearDown(self):
-        self.con.close()
-
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_sqlite3/test_hooks.py b/Lib/test/test_sqlite3/test_hooks.py
index 21042b9bf106f7..49e72f8fcfbcbd 100644
--- a/Lib/test/test_sqlite3/test_hooks.py
+++ b/Lib/test/test_sqlite3/test_hooks.py
@@ -26,34 +26,31 @@
 
 from test.support.os_helper import TESTFN, unlink
 
-from test.test_sqlite3.test_dbapi import memory_database, cx_limit
-from test.test_sqlite3.test_userfunctions import with_tracebacks
+from .util import memory_database, cx_limit, with_tracebacks
+from .util import MemoryDatabaseMixin
 
 
-class CollationTests(unittest.TestCase):
+class CollationTests(MemoryDatabaseMixin, unittest.TestCase):
+
     def test_create_collation_not_string(self):
-        con = sqlite.connect(":memory:")
         with self.assertRaises(TypeError):
-            con.create_collation(None, lambda x, y: (x > y) - (x < y))
+            self.con.create_collation(None, lambda x, y: (x > y) - (x < y))
 
     def test_create_collation_not_callable(self):
-        con = sqlite.connect(":memory:")
         with self.assertRaises(TypeError) as cm:
-            con.create_collation("X", 42)
+            self.con.create_collation("X", 42)
         self.assertEqual(str(cm.exception), 'parameter must be callable')
 
     def test_create_collation_not_ascii(self):
-        con = sqlite.connect(":memory:")
-        con.create_collation("collä", lambda x, y: (x > y) - (x < y))
+        self.con.create_collation("collä", lambda x, y: (x > y) - (x < y))
 
     def test_create_collation_bad_upper(self):
         class BadUpperStr(str):
             def upper(self):
                 return None
-        con = sqlite.connect(":memory:")
         mycoll = lambda x, y: -((x > y) - (x < y))
-        con.create_collation(BadUpperStr("mycoll"), mycoll)
-        result = con.execute("""
+        self.con.create_collation(BadUpperStr("mycoll"), mycoll)
+        result = self.con.execute("""
             select x from (
             select 'a' as x
             union
@@ -68,8 +65,7 @@ def mycoll(x, y):
             # reverse order
             return -((x > y) - (x < y))
 
-        con = sqlite.connect(":memory:")
-        con.create_collation("mycoll", mycoll)
+        self.con.create_collation("mycoll", mycoll)
         sql = """
             select x from (
             select 'a' as x
@@ -79,21 +75,20 @@ def mycoll(x, y):
             select 'c' as x
             ) order by x collate mycoll
             """
-        result = con.execute(sql).fetchall()
+        result = self.con.execute(sql).fetchall()
         self.assertEqual(result, [('c',), ('b',), ('a',)],
                          msg='the expected order was not returned')
 
-        con.create_collation("mycoll", None)
+        self.con.create_collation("mycoll", None)
         with self.assertRaises(sqlite.OperationalError) as cm:
-            result = con.execute(sql).fetchall()
+            result = self.con.execute(sql).fetchall()
         self.assertEqual(str(cm.exception), 'no such collation sequence: mycoll')
 
     def test_collation_returns_large_integer(self):
         def mycoll(x, y):
             # reverse order
             return -((x > y) - (x < y)) * 2**32
-        con = sqlite.connect(":memory:")
-        con.create_collation("mycoll", mycoll)
+        self.con.create_collation("mycoll", mycoll)
         sql = """
             select x from (
             select 'a' as x
@@ -103,7 +98,7 @@ def mycoll(x, y):
             select 'c' as x
             ) order by x collate mycoll
             """
-        result = con.execute(sql).fetchall()
+        result = self.con.execute(sql).fetchall()
         self.assertEqual(result, [('c',), ('b',), ('a',)],
                          msg="the expected order was not returned")
 
@@ -112,7 +107,7 @@ def test_collation_register_twice(self):
         Register two different collation functions under the same name.
         Verify that the last one is actually used.
         """
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.create_collation("mycoll", lambda x, y: (x > y) - (x < y))
         con.create_collation("mycoll", lambda x, y: -((x > y) - (x < y)))
         result = con.execute("""
@@ -126,25 +121,26 @@ def test_deregister_collation(self):
         Register a collation, then deregister it. Make sure an error is raised if we try
         to use it.
         """
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.create_collation("mycoll", lambda x, y: (x > y) - (x < y))
         con.create_collation("mycoll", None)
         with self.assertRaises(sqlite.OperationalError) as cm:
             con.execute("select 'a' as x union select 'b' as x order by x collate mycoll")
         self.assertEqual(str(cm.exception), 'no such collation sequence: mycoll')
 
-class ProgressTests(unittest.TestCase):
+
+class ProgressTests(MemoryDatabaseMixin, unittest.TestCase):
+
     def test_progress_handler_used(self):
         """
         Test that the progress handler is invoked once it is set.
         """
-        con = sqlite.connect(":memory:")
         progress_calls = []
         def progress():
             progress_calls.append(None)
             return 0
-        con.set_progress_handler(progress, 1)
-        con.execute("""
+        self.con.set_progress_handler(progress, 1)
+        self.con.execute("""
             create table foo(a, b)
             """)
         self.assertTrue(progress_calls)
@@ -153,7 +149,7 @@ def test_opcode_count(self):
         """
         Test that the opcode argument is respected.
         """
-        con = sqlite.connect(":memory:")
+        con = self.con
         progress_calls = []
         def progress():
             progress_calls.append(None)
@@ -176,11 +172,10 @@ def test_cancel_operation(self):
         """
         Test that returning a non-zero value stops the operation in progress.
         """
-        con = sqlite.connect(":memory:")
         def progress():
             return 1
-        con.set_progress_handler(progress, 1)
-        curs = con.cursor()
+        self.con.set_progress_handler(progress, 1)
+        curs = self.con.cursor()
         self.assertRaises(
             sqlite.OperationalError,
             curs.execute,
@@ -190,7 +185,7 @@ def test_clear_handler(self):
         """
         Test that setting the progress handler to None clears the previously set handler.
         """
-        con = sqlite.connect(":memory:")
+        con = self.con
         action = 0
         def progress():
             nonlocal action
@@ -203,31 +198,42 @@ def progress():
 
     @with_tracebacks(ZeroDivisionError, name="bad_progress")
     def test_error_in_progress_handler(self):
-        con = sqlite.connect(":memory:")
         def bad_progress():
             1 / 0
-        con.set_progress_handler(bad_progress, 1)
+        self.con.set_progress_handler(bad_progress, 1)
         with self.assertRaises(sqlite.OperationalError):
-            con.execute("""
+            self.con.execute("""
                 create table foo(a, b)
                 """)
 
     @with_tracebacks(ZeroDivisionError, name="bad_progress")
     def test_error_in_progress_handler_result(self):
-        con = sqlite.connect(":memory:")
         class BadBool:
             def __bool__(self):
                 1 / 0
         def bad_progress():
             return BadBool()
-        con.set_progress_handler(bad_progress, 1)
+        self.con.set_progress_handler(bad_progress, 1)
         with self.assertRaises(sqlite.OperationalError):
-            con.execute("""
+            self.con.execute("""
                 create table foo(a, b)
                 """)
 
+    def test_progress_handler_keyword_args(self):
+        regex = (
+            r"Passing keyword argument 'progress_handler' to "
+            r"_sqlite3.Connection.set_progress_handler\(\) is deprecated. "
+            r"Parameter 'progress_handler' will become positional-only in "
+            r"Python 3.15."
+        )
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.set_progress_handler(progress_handler=lambda: None, n=1)
+        self.assertEqual(cm.filename, __file__)
+
+
+class TraceCallbackTests(MemoryDatabaseMixin, unittest.TestCase):
 
-class TraceCallbackTests(unittest.TestCase):
     @contextlib.contextmanager
     def check_stmt_trace(self, cx, expected):
         try:
@@ -242,12 +248,11 @@ def test_trace_callback_used(self):
         """
         Test that the trace callback is invoked once it is set.
         """
-        con = sqlite.connect(":memory:")
         traced_statements = []
         def trace(statement):
             traced_statements.append(statement)
-        con.set_trace_callback(trace)
-        con.execute("create table foo(a, b)")
+        self.con.set_trace_callback(trace)
+        self.con.execute("create table foo(a, b)")
         self.assertTrue(traced_statements)
         self.assertTrue(any("create table foo" in stmt for stmt in traced_statements))
 
@@ -255,7 +260,7 @@ def test_clear_trace_callback(self):
         """
         Test that setting the trace callback to None clears the previously set callback.
         """
-        con = sqlite.connect(":memory:")
+        con = self.con
         traced_statements = []
         def trace(statement):
             traced_statements.append(statement)
@@ -269,7 +274,7 @@ def test_unicode_content(self):
         Test that the statement can contain unicode literals.
         """
         unicode_value = '\xf6\xe4\xfc\xd6\xc4\xdc\xdf\u20ac'
-        con = sqlite.connect(":memory:")
+        con = self.con
         traced_statements = []
         def trace(statement):
             traced_statements.append(statement)
@@ -323,7 +328,7 @@ def test_trace_expanded_sql(self):
     )
     def test_trace_too_much_expanded_sql(self):
         # If the expanded string is too large, we'll fall back to the
-        # unexpanded SQL statement (for SQLite 3.14.0 and newer).
+        # unexpanded SQL statement.
         # The resulting string length is limited by the runtime limit
         # SQLITE_LIMIT_LENGTH.
         template = "select 1 as a where a="
@@ -334,8 +339,6 @@ def test_trace_too_much_expanded_sql(self):
 
             unexpanded_query = template + "?"
             expected = [unexpanded_query]
-            if sqlite.sqlite_version_info < (3, 14, 0):
-                expected = []
             with self.check_stmt_trace(cx, expected):
                 cx.execute(unexpanded_query, (bad_param,))
 
@@ -349,6 +352,18 @@ def test_trace_bad_handler(self):
             cx.set_trace_callback(lambda stmt: 5/0)
             cx.execute("select 1")
 
+    def test_trace_keyword_args(self):
+        regex = (
+            r"Passing keyword argument 'trace_callback' to "
+            r"_sqlite3.Connection.set_trace_callback\(\) is deprecated. "
+            r"Parameter 'trace_callback' will become positional-only in "
+            r"Python 3.15."
+        )
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.set_trace_callback(trace_callback=lambda: None)
+        self.assertEqual(cm.filename, __file__)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_sqlite3/test_regression.py b/Lib/test/test_sqlite3/test_regression.py
index 7e8221e7227e6e..db4e13222da9da 100644
--- a/Lib/test/test_sqlite3/test_regression.py
+++ b/Lib/test/test_sqlite3/test_regression.py
@@ -28,15 +28,12 @@
 
 from test import support
 from unittest.mock import patch
-from test.test_sqlite3.test_dbapi import memory_database, cx_limit
 
+from .util import memory_database, cx_limit
+from .util import MemoryDatabaseMixin
 
-class RegressionTests(unittest.TestCase):
-    def setUp(self):
-        self.con = sqlite.connect(":memory:")
 
-    def tearDown(self):
-        self.con.close()
+class RegressionTests(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_pragma_user_version(self):
         # This used to crash pysqlite because this pragma command returns NULL for the column name
@@ -45,28 +42,24 @@ def test_pragma_user_version(self):
 
     def test_pragma_schema_version(self):
         # This still crashed pysqlite <= 2.2.1
-        con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_COLNAMES)
-        try:
+        with memory_database(detect_types=sqlite.PARSE_COLNAMES) as con:
             cur = self.con.cursor()
             cur.execute("pragma schema_version")
-        finally:
-            cur.close()
-            con.close()
 
     def test_statement_reset(self):
         # pysqlite 2.1.0 to 2.2.0 have the problem that not all statements are
         # reset before a rollback, but only those that are still in the
         # statement cache. The others are not accessible from the connection object.
-        con = sqlite.connect(":memory:", cached_statements=5)
-        cursors = [con.cursor() for x in range(5)]
-        cursors[0].execute("create table test(x)")
-        for i in range(10):
-            cursors[0].executemany("insert into test(x) values (?)", [(x,) for x in range(10)])
+        with memory_database(cached_statements=5) as con:
+            cursors = [con.cursor() for x in range(5)]
+            cursors[0].execute("create table test(x)")
+            for i in range(10):
+                cursors[0].executemany("insert into test(x) values (?)", [(x,) for x in range(10)])
 
-        for i in range(5):
-            cursors[i].execute(" " * i + "select x from test")
+            for i in range(5):
+                cursors[i].execute(" " * i + "select x from test")
 
-        con.rollback()
+            con.rollback()
 
     def test_column_name_with_spaces(self):
         cur = self.con.cursor()
@@ -81,17 +74,15 @@ def test_statement_finalization_on_close_db(self):
         # cache when closing the database. statements that were still
         # referenced in cursors weren't closed and could provoke "
         # "OperationalError: Unable to close due to unfinalised statements".
-        con = sqlite.connect(":memory:")
         cursors = []
         # default statement cache size is 100
         for i in range(105):
-            cur = con.cursor()
+            cur = self.con.cursor()
             cursors.append(cur)
             cur.execute("select 1 x union select " + str(i))
-        con.close()
 
     def test_on_conflict_rollback(self):
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.execute("create table foo(x, unique(x) on conflict rollback)")
         con.execute("insert into foo(x) values (1)")
         try:
@@ -126,16 +117,16 @@ def test_type_map_usage(self):
         a statement. This test exhibits the problem.
         """
         SELECT = "select * from foo"
-        con = sqlite.connect(":memory:",detect_types=sqlite.PARSE_DECLTYPES)
-        cur = con.cursor()
-        cur.execute("create table foo(bar timestamp)")
-        with self.assertWarnsRegex(DeprecationWarning, "adapter"):
-            cur.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),))
-        cur.execute(SELECT)
-        cur.execute("drop table foo")
-        cur.execute("create table foo(bar integer)")
-        cur.execute("insert into foo(bar) values (5)")
-        cur.execute(SELECT)
+        with memory_database(detect_types=sqlite.PARSE_DECLTYPES) as con:
+            cur = con.cursor()
+            cur.execute("create table foo(bar timestamp)")
+            with self.assertWarnsRegex(DeprecationWarning, "adapter"):
+                cur.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),))
+            cur.execute(SELECT)
+            cur.execute("drop table foo")
+            cur.execute("create table foo(bar integer)")
+            cur.execute("insert into foo(bar) values (5)")
+            cur.execute(SELECT)
 
     def test_bind_mutating_list(self):
         # Issue41662: Crash when mutate a list of parameters during iteration.
@@ -144,11 +135,11 @@ def __conform__(self, protocol):
                 parameters.clear()
                 return "..."
         parameters = [X(), 0]
-        con = sqlite.connect(":memory:",detect_types=sqlite.PARSE_DECLTYPES)
-        con.execute("create table foo(bar X, baz integer)")
-        # Should not crash
-        with self.assertRaises(IndexError):
-            con.execute("insert into foo(bar, baz) values (?, ?)", parameters)
+        with memory_database(detect_types=sqlite.PARSE_DECLTYPES) as con:
+            con.execute("create table foo(bar X, baz integer)")
+            # Should not crash
+            with self.assertRaises(IndexError):
+                con.execute("insert into foo(bar, baz) values (?, ?)", parameters)
 
     def test_error_msg_decode_error(self):
         # When porting the module to Python 3.0, the error message about
@@ -173,7 +164,7 @@ def upper(self):
             def __del__(self):
                 con.isolation_level = ""
 
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.isolation_level = None
         for level in "", "DEFERRED", "IMMEDIATE", "EXCLUSIVE":
             with self.subTest(level=level):
@@ -204,8 +195,7 @@ class Cursor(sqlite.Cursor):
             def __init__(self, con):
                 pass
 
-        con = sqlite.connect(":memory:")
-        cur = Cursor(con)
+        cur = Cursor(self.con)
         with self.assertRaises(sqlite.ProgrammingError):
             cur.execute("select 4+5").fetchall()
         with self.assertRaisesRegex(sqlite.ProgrammingError,
@@ -238,7 +228,9 @@ def test_auto_commit(self):
         2.5.3 introduced a regression so that these could no longer
         be created.
         """
-        con = sqlite.connect(":memory:", isolation_level=None)
+        with memory_database(isolation_level=None) as con:
+            self.assertIsNone(con.isolation_level)
+            self.assertFalse(con.in_transaction)
 
     def test_pragma_autocommit(self):
         """
@@ -273,9 +265,7 @@ def test_recursive_cursor_use(self):
         Recursively using a cursor, such as when reusing it from a generator led to segfaults.
         Now we catch recursive cursor usage and raise a ProgrammingError.
         """
-        con = sqlite.connect(":memory:")
-
-        cur = con.cursor()
+        cur = self.con.cursor()
         cur.execute("create table a (bar)")
         cur.execute("create table b (baz)")
 
@@ -295,29 +285,30 @@ def test_convert_timestamp_microsecond_padding(self):
         since the microsecond string "456" actually represents "456000".
         """
 
-        con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)
-        cur = con.cursor()
-        cur.execute("CREATE TABLE t (x TIMESTAMP)")
+        with memory_database(detect_types=sqlite.PARSE_DECLTYPES) as con:
+            cur = con.cursor()
+            cur.execute("CREATE TABLE t (x TIMESTAMP)")
 
-        # Microseconds should be 456000
-        cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.456')")
+            # Microseconds should be 456000
+            cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.456')")
 
-        # Microseconds should be truncated to 123456
-        cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.123456789')")
+            # Microseconds should be truncated to 123456
+            cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.123456789')")
 
-        cur.execute("SELECT * FROM t")
-        with self.assertWarnsRegex(DeprecationWarning, "converter"):
-            values = [x[0] for x in cur.fetchall()]
+            cur.execute("SELECT * FROM t")
+            with self.assertWarnsRegex(DeprecationWarning, "converter"):
+                values = [x[0] for x in cur.fetchall()]
 
-        self.assertEqual(values, [
-            datetime.datetime(2012, 4, 4, 15, 6, 0, 456000),
-            datetime.datetime(2012, 4, 4, 15, 6, 0, 123456),
-        ])
+            self.assertEqual(values, [
+                datetime.datetime(2012, 4, 4, 15, 6, 0, 456000),
+                datetime.datetime(2012, 4, 4, 15, 6, 0, 123456),
+            ])
 
     def test_invalid_isolation_level_type(self):
         # isolation level is a string, not an integer
-        self.assertRaises(TypeError,
-                          sqlite.connect, ":memory:", isolation_level=123)
+        regex = "isolation_level must be str or None"
+        with self.assertRaisesRegex(TypeError, regex):
+            memory_database(isolation_level=123).__enter__()
 
 
     def test_null_character(self):
@@ -333,7 +324,7 @@ def test_null_character(self):
                                        cur.execute, query)
 
     def test_surrogates(self):
-        con = sqlite.connect(":memory:")
+        con = self.con
         self.assertRaises(UnicodeEncodeError, con, "select '\ud8ff'")
         self.assertRaises(UnicodeEncodeError, con, "select '\udcff'")
         cur = con.cursor()
@@ -359,7 +350,7 @@ def test_commit_cursor_reset(self):
         to return rows multiple times when fetched from cursors
         after commit. See issues 10513 and 23129 for details.
         """
-        con = sqlite.connect(":memory:")
+        con = self.con
         con.executescript("""
         create table t(c);
         create table t2(c);
@@ -391,10 +382,9 @@ def test_bpo31770(self):
         """
         def callback(*args):
             pass
-        con = sqlite.connect(":memory:")
-        cur = sqlite.Cursor(con)
+        cur = sqlite.Cursor(self.con)
         ref = weakref.ref(cur, callback)
-        cur.__init__(con)
+        cur.__init__(self.con)
         del cur
         # The interpreter shouldn't crash when ref is collected.
         del ref
@@ -425,6 +415,7 @@ def test_return_empty_bytestring(self):
 
     def test_table_lock_cursor_replace_stmt(self):
         with memory_database() as con:
+            con = self.con
             cur = con.cursor()
             cur.execute("create table t(t)")
             cur.executemany("insert into t values(?)",
diff --git a/Lib/test/test_sqlite3/test_transactions.py b/Lib/test/test_sqlite3/test_transactions.py
index 5d211dd47b0b6b..a3de7a7a82ec1c 100644
--- a/Lib/test/test_sqlite3/test_transactions.py
+++ b/Lib/test/test_sqlite3/test_transactions.py
@@ -24,22 +24,21 @@
 import sqlite3 as sqlite
 from contextlib import contextmanager
 
-from test.support import LOOPBACK_TIMEOUT
 from test.support.os_helper import TESTFN, unlink
 from test.support.script_helper import assert_python_ok
 
-from test.test_sqlite3.test_dbapi import memory_database
-
-
-TIMEOUT = LOOPBACK_TIMEOUT / 10
+from .util import memory_database
+from .util import MemoryDatabaseMixin
 
 
 class TransactionTests(unittest.TestCase):
     def setUp(self):
-        self.con1 = sqlite.connect(TESTFN, timeout=TIMEOUT)
+        # We can disable the busy handlers, since we control
+        # the order of SQLite C API operations.
+        self.con1 = sqlite.connect(TESTFN, timeout=0)
         self.cur1 = self.con1.cursor()
 
-        self.con2 = sqlite.connect(TESTFN, timeout=TIMEOUT)
+        self.con2 = sqlite.connect(TESTFN, timeout=0)
         self.cur2 = self.con2.cursor()
 
     def tearDown(self):
@@ -119,10 +118,8 @@ def test_raise_timeout(self):
             self.cur2.execute("insert into test(i) values (5)")
 
     def test_locking(self):
-        """
-        This tests the improved concurrency with pysqlite 2.3.4. You needed
-        to roll back con2 before you could commit con1.
-        """
+        # This tests the improved concurrency with pysqlite 2.3.4. You needed
+        # to roll back con2 before you could commit con1.
         self.cur1.execute("create table test(i)")
         self.cur1.execute("insert into test(i) values (5)")
         with self.assertRaises(sqlite.OperationalError):
@@ -132,14 +129,14 @@ def test_locking(self):
 
     def test_rollback_cursor_consistency(self):
         """Check that cursors behave correctly after rollback."""
-        con = sqlite.connect(":memory:")
-        cur = con.cursor()
-        cur.execute("create table test(x)")
-        cur.execute("insert into test(x) values (5)")
-        cur.execute("select 1 union select 2 union select 3")
+        with memory_database() as con:
+            cur = con.cursor()
+            cur.execute("create table test(x)")
+            cur.execute("insert into test(x) values (5)")
+            cur.execute("select 1 union select 2 union select 3")
 
-        con.rollback()
-        self.assertEqual(cur.fetchall(), [(1,), (2,), (3,)])
+            con.rollback()
+            self.assertEqual(cur.fetchall(), [(1,), (2,), (3,)])
 
     def test_multiple_cursors_and_iternext(self):
         # gh-94028: statements are cleared and reset in cursor iternext.
@@ -218,10 +215,7 @@ def test_no_duplicate_rows_after_rollback_new_query(self):
 
 
 
-class SpecialCommandTests(unittest.TestCase):
-    def setUp(self):
-        self.con = sqlite.connect(":memory:")
-        self.cur = self.con.cursor()
+class SpecialCommandTests(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_drop_table(self):
         self.cur.execute("create table test(i)")
@@ -233,14 +227,8 @@ def test_pragma(self):
         self.cur.execute("insert into test(i) values (5)")
         self.cur.execute("pragma count_changes=1")
 
-    def tearDown(self):
-        self.cur.close()
-        self.con.close()
-
 
-class TransactionalDDL(unittest.TestCase):
-    def setUp(self):
-        self.con = sqlite.connect(":memory:")
+class TransactionalDDL(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_ddl_does_not_autostart_transaction(self):
         # For backwards compatibility reasons, DDL statements should not
@@ -268,9 +256,6 @@ def test_transactional_ddl(self):
         with self.assertRaises(sqlite.OperationalError):
             self.con.execute("select * from test")
 
-    def tearDown(self):
-        self.con.close()
-
 
 class IsolationLevelFromInit(unittest.TestCase):
     CREATE = "create table t(t)"
diff --git a/Lib/test/test_sqlite3/test_types.py b/Lib/test/test_sqlite3/test_types.py
index fde5f888e64009..66d27d21b8dc10 100644
--- a/Lib/test/test_sqlite3/test_types.py
+++ b/Lib/test/test_sqlite3/test_types.py
@@ -371,7 +371,6 @@ def test_cursor_description_insert(self):
         self.assertIsNone(self.cur.description)
 
 
-@unittest.skipIf(sqlite.sqlite_version_info < (3, 8, 3), "CTEs not supported")
 class CommonTableExpressionTests(unittest.TestCase):
 
     def setUp(self):
diff --git a/Lib/test/test_sqlite3/test_userfunctions.py b/Lib/test/test_sqlite3/test_userfunctions.py
index 632d657d416fd4..c6c3db159add64 100644
--- a/Lib/test/test_sqlite3/test_userfunctions.py
+++ b/Lib/test/test_sqlite3/test_userfunctions.py
@@ -21,54 +21,15 @@
 #    misrepresented as being the original software.
 # 3. This notice may not be removed or altered from any source distribution.
 
-import contextlib
-import functools
-import io
-import re
 import sys
 import unittest
 import sqlite3 as sqlite
 
 from unittest.mock import Mock, patch
-from test.support import bigmemtest, catch_unraisable_exception, gc_collect
-
-from test.test_sqlite3.test_dbapi import cx_limit
-
-
-def with_tracebacks(exc, regex="", name=""):
-    """Convenience decorator for testing callback tracebacks."""
-    def decorator(func):
-        _regex = re.compile(regex) if regex else None
-        @functools.wraps(func)
-        def wrapper(self, *args, **kwargs):
-            with catch_unraisable_exception() as cm:
-                # First, run the test with traceback enabled.
-                with check_tracebacks(self, cm, exc, _regex, name):
-                    func(self, *args, **kwargs)
-
-            # Then run the test with traceback disabled.
-            func(self, *args, **kwargs)
-        return wrapper
-    return decorator
-
-
-@contextlib.contextmanager
-def check_tracebacks(self, cm, exc, regex, obj_name):
-    """Convenience context manager for testing callback tracebacks."""
-    sqlite.enable_callback_tracebacks(True)
-    try:
-        buf = io.StringIO()
-        with contextlib.redirect_stderr(buf):
-            yield
-
-        self.assertEqual(cm.unraisable.exc_type, exc)
-        if regex:
-            msg = str(cm.unraisable.exc_value)
-            self.assertIsNotNone(regex.search(msg))
-        if obj_name:
-            self.assertEqual(cm.unraisable.object.__name__, obj_name)
-    finally:
-        sqlite.enable_callback_tracebacks(False)
+from test.support import bigmemtest, gc_collect
+
+from .util import cx_limit, memory_database
+from .util import with_tracebacks
 
 
 def func_returntext():
@@ -195,7 +156,6 @@ def setUp(self):
         self.con.create_function("returnblob", 0, func_returnblob)
         self.con.create_function("returnlonglong", 0, func_returnlonglong)
         self.con.create_function("returnnan", 0, lambda: float("nan"))
-        self.con.create_function("returntoolargeint", 0, lambda: 1 << 65)
         self.con.create_function("return_noncont_blob", 0,
                                  lambda: memoryview(b"blob")[::2])
         self.con.create_function("raiseexception", 0, func_raiseexception)
@@ -294,11 +254,6 @@ def test_func_return_nan(self):
         cur.execute("select returnnan()")
         self.assertIsNone(cur.fetchone()[0])
 
-    def test_func_return_too_large_int(self):
-        cur = self.con.cursor()
-        self.assertRaisesRegex(sqlite.DataError, "string or blob too big",
-                               self.con.execute, "select returntoolargeint()")
-
     @with_tracebacks(ZeroDivisionError, name="func_raiseexception")
     def test_func_exception(self):
         cur = self.con.cursor()
@@ -387,38 +342,22 @@ def append_result(arg):
     # Regarding deterministic functions:
     #
     # Between 3.8.3 and 3.15.0, deterministic functions were only used to
-    # optimize inner loops, so for those versions we can only test if the
-    # sqlite machinery has factored out a call or not. From 3.15.0 and onward,
-    # deterministic functions were permitted in WHERE clauses of partial
-    # indices, which allows testing based on syntax, iso. the query optimizer.
-    @unittest.skipIf(sqlite.sqlite_version_info < (3, 8, 3), "Requires SQLite 3.8.3 or higher")
+    # optimize inner loops. From 3.15.0 and onward, deterministic functions
+    # were permitted in WHERE clauses of partial indices, which allows testing
+    # based on syntax, iso. the query optimizer.
     def test_func_non_deterministic(self):
         mock = Mock(return_value=None)
         self.con.create_function("nondeterministic", 0, mock, deterministic=False)
-        if sqlite.sqlite_version_info < (3, 15, 0):
-            self.con.execute("select nondeterministic() = nondeterministic()")
-            self.assertEqual(mock.call_count, 2)
-        else:
-            with self.assertRaises(sqlite.OperationalError):
-                self.con.execute("create index t on test(t) where nondeterministic() is not null")
+        with self.assertRaises(sqlite.OperationalError):
+            self.con.execute("create index t on test(t) where nondeterministic() is not null")
 
-    @unittest.skipIf(sqlite.sqlite_version_info < (3, 8, 3), "Requires SQLite 3.8.3 or higher")
     def test_func_deterministic(self):
         mock = Mock(return_value=None)
         self.con.create_function("deterministic", 0, mock, deterministic=True)
-        if sqlite.sqlite_version_info < (3, 15, 0):
-            self.con.execute("select deterministic() = deterministic()")
-            self.assertEqual(mock.call_count, 1)
-        else:
-            try:
-                self.con.execute("create index t on test(t) where deterministic() is not null")
-            except sqlite.OperationalError:
-                self.fail("Unexpected failure while creating partial index")
-
-    @unittest.skipIf(sqlite.sqlite_version_info >= (3, 8, 3), "SQLite < 3.8.3 needed")
-    def test_func_deterministic_not_supported(self):
-        with self.assertRaises(sqlite.NotSupportedError):
-            self.con.create_function("deterministic", 0, int, deterministic=True)
+        try:
+            self.con.execute("create index t on test(t) where deterministic() is not null")
+        except sqlite.OperationalError:
+            self.fail("Unexpected failure while creating partial index")
 
     def test_func_deterministic_keyword_only(self):
         with self.assertRaises(TypeError):
@@ -427,26 +366,27 @@ def test_func_deterministic_keyword_only(self):
     def test_function_destructor_via_gc(self):
         # See bpo-44304: The destructor of the user function can
         # crash if is called without the GIL from the gc functions
-        dest = sqlite.connect(':memory:')
         def md5sum(t):
             return
 
-        dest.create_function("md5", 1, md5sum)
-        x = dest("create table lang (name, first_appeared)")
-        del md5sum, dest
+        with memory_database() as dest:
+            dest.create_function("md5", 1, md5sum)
+            x = dest("create table lang (name, first_appeared)")
+            del md5sum, dest
 
-        y = [x]
-        y.append(y)
+            y = [x]
+            y.append(y)
 
-        del x,y
-        gc_collect()
+            del x,y
+            gc_collect()
 
     @with_tracebacks(OverflowError)
     def test_func_return_too_large_int(self):
         cur = self.con.cursor()
+        msg = "string or blob too big"
         for value in 2**63, -2**63-1, 2**64:
             self.con.create_function("largeint", 0, lambda value=value: value)
-            with self.assertRaises(sqlite.DataError):
+            with self.assertRaisesRegex(sqlite.DataError, msg):
                 cur.execute("select largeint()")
 
     @with_tracebacks(UnicodeEncodeError, "surrogates not allowed", "chr")
@@ -481,6 +421,29 @@ def test_func_return_illegal_value(self):
         self.assertRaisesRegex(sqlite.OperationalError, msg,
                                self.con.execute, "select badreturn()")
 
+    def test_func_keyword_args(self):
+        regex = (
+            r"Passing keyword arguments 'name', 'narg' and 'func' to "
+            r"_sqlite3.Connection.create_function\(\) is deprecated. "
+            r"Parameters 'name', 'narg' and 'func' will become "
+            r"positional-only in Python 3.15."
+        )
+
+        def noop():
+            return None
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.create_function("noop", 0, func=noop)
+        self.assertEqual(cm.filename, __file__)
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.create_function("noop", narg=0, func=noop)
+        self.assertEqual(cm.filename, __file__)
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.create_function(name="noop", narg=0, func=noop)
+        self.assertEqual(cm.filename, __file__)
+
 
 class WindowSumInt:
     def __init__(self):
@@ -535,6 +498,10 @@ def setUp(self):
         """
         self.con.create_window_function("sumint", 1, WindowSumInt)
 
+    def tearDown(self):
+        self.cur.close()
+        self.con.close()
+
     def test_win_sum_int(self):
         self.cur.execute(self.query % "sumint")
         self.assertEqual(self.cur.fetchall(), self.expected)
@@ -655,6 +622,7 @@ def setUp(self):
             """)
         cur.execute("insert into test(t, i, f, n, b) values (?, ?, ?, ?, ?)",
             ("foo", 5, 3.14, None, memoryview(b"blob"),))
+        cur.close()
 
         self.con.create_aggregate("nostep", 1, AggrNoStep)
         self.con.create_aggregate("nofinalize", 1, AggrNoFinalize)
@@ -667,9 +635,7 @@ def setUp(self):
         self.con.create_aggregate("aggtxt", 1, AggrText)
 
     def tearDown(self):
-        #self.cur.close()
-        #self.con.close()
-        pass
+        self.con.close()
 
     def test_aggr_error_on_create(self):
         with self.assertRaises(sqlite.OperationalError):
@@ -771,6 +737,27 @@ def test_aggr_text(self):
                 val = cur.fetchone()[0]
                 self.assertEqual(val, txt)
 
+    def test_agg_keyword_args(self):
+        regex = (
+            r"Passing keyword arguments 'name', 'n_arg' and 'aggregate_class' to "
+            r"_sqlite3.Connection.create_aggregate\(\) is deprecated. "
+            r"Parameters 'name', 'n_arg' and 'aggregate_class' will become "
+            r"positional-only in Python 3.15."
+        )
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.create_aggregate("test", 1, aggregate_class=AggrText)
+        self.assertEqual(cm.filename, __file__)
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.create_aggregate("test", n_arg=1, aggregate_class=AggrText)
+        self.assertEqual(cm.filename, __file__)
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.create_aggregate(name="test", n_arg=0,
+                                      aggregate_class=AggrText)
+        self.assertEqual(cm.filename, __file__)
+
 
 class AuthorizerTests(unittest.TestCase):
     @staticmethod
@@ -796,7 +783,7 @@ def setUp(self):
         self.con.set_authorizer(self.authorizer_cb)
 
     def tearDown(self):
-        pass
+        self.con.close()
 
     def test_table_access(self):
         with self.assertRaises(sqlite.DatabaseError) as cm:
@@ -813,6 +800,18 @@ def test_clear_authorizer(self):
         self.con.execute("select * from t2")
         self.con.execute("select c2 from t1")
 
+    def test_authorizer_keyword_args(self):
+        regex = (
+            r"Passing keyword argument 'authorizer_callback' to "
+            r"_sqlite3.Connection.set_authorizer\(\) is deprecated. "
+            r"Parameter 'authorizer_callback' will become positional-only in "
+            r"Python 3.15."
+        )
+
+        with self.assertWarnsRegex(DeprecationWarning, regex) as cm:
+            self.con.set_authorizer(authorizer_callback=lambda: None)
+        self.assertEqual(cm.filename, __file__)
+
 
 class AuthorizerRaiseExceptionTests(AuthorizerTests):
     @staticmethod
diff --git a/Lib/test/test_sqlite3/util.py b/Lib/test/test_sqlite3/util.py
new file mode 100644
index 00000000000000..5599823838beea
--- /dev/null
+++ b/Lib/test/test_sqlite3/util.py
@@ -0,0 +1,77 @@
+import contextlib
+import functools
+import io
+import re
+import sqlite3
+import test.support
+
+
+# Helper for temporary memory databases
+def memory_database(*args, **kwargs):
+    cx = sqlite3.connect(":memory:", *args, **kwargs)
+    return contextlib.closing(cx)
+
+
+# Temporarily limit a database connection parameter
+@contextlib.contextmanager
+def cx_limit(cx, category=sqlite3.SQLITE_LIMIT_SQL_LENGTH, limit=128):
+    try:
+        _prev = cx.setlimit(category, limit)
+        yield limit
+    finally:
+        cx.setlimit(category, _prev)
+
+
+def with_tracebacks(exc, regex="", name=""):
+    """Convenience decorator for testing callback tracebacks."""
+    def decorator(func):
+        _regex = re.compile(regex) if regex else None
+        @functools.wraps(func)
+        def wrapper(self, *args, **kwargs):
+            with test.support.catch_unraisable_exception() as cm:
+                # First, run the test with traceback enabled.
+                with check_tracebacks(self, cm, exc, _regex, name):
+                    func(self, *args, **kwargs)
+
+            # Then run the test with traceback disabled.
+            func(self, *args, **kwargs)
+        return wrapper
+    return decorator
+
+
+@contextlib.contextmanager
+def check_tracebacks(self, cm, exc, regex, obj_name):
+    """Convenience context manager for testing callback tracebacks."""
+    sqlite3.enable_callback_tracebacks(True)
+    try:
+        buf = io.StringIO()
+        with contextlib.redirect_stderr(buf):
+            yield
+
+        self.assertEqual(cm.unraisable.exc_type, exc)
+        if regex:
+            msg = str(cm.unraisable.exc_value)
+            self.assertIsNotNone(regex.search(msg))
+        if obj_name:
+            self.assertEqual(cm.unraisable.object.__name__, obj_name)
+    finally:
+        sqlite3.enable_callback_tracebacks(False)
+
+
+class MemoryDatabaseMixin:
+
+    def setUp(self):
+        self.con = sqlite3.connect(":memory:")
+        self.cur = self.con.cursor()
+
+    def tearDown(self):
+        self.cur.close()
+        self.con.close()
+
+    @property
+    def cx(self):
+        return self.con
+
+    @property
+    def cu(self):
+        return self.cur
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index d46ce5e60e2141..3fdfa2960503b8 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -10,11 +10,15 @@
 from test.support import threading_helper
 from test.support import warnings_helper
 from test.support import asyncore
+import array
+import re
 import socket
 import select
+import struct
 import time
 import enum
 import gc
+import http.client
 import os
 import errno
 import pprint
@@ -57,10 +61,10 @@
     PROTOCOL_TO_TLS_VERSION[proto] = ver
 
 def data_file(*name):
-    return os.path.join(os.path.dirname(__file__), *name)
+    return os.path.join(os.path.dirname(__file__), "certdata", *name)
 
 # The custom key and certificate files used in test_ssl are generated
-# using Lib/test/make_ssl_certs.py.
+# using Lib/test/certdata/make_ssl_certs.py.
 # Other certificates are simply fetched from the internet servers they
 # are meant to authenticate.
 
@@ -339,6 +343,15 @@ def test_constants(self):
         ssl.OP_NO_TLSv1_2
         self.assertEqual(ssl.PROTOCOL_TLS, ssl.PROTOCOL_SSLv23)
 
+    def test_options(self):
+        # gh-106687: SSL options values are unsigned integer (uint64_t)
+        for name in dir(ssl):
+            if not name.startswith('OP_'):
+                continue
+            with self.subTest(option=name):
+                value = getattr(ssl, name)
+                self.assertGreaterEqual(value, 0, f"ssl.{name}")
+
     def test_ssl_types(self):
         ssl_types = [
             _ssl._SSLContext,
@@ -629,7 +642,7 @@ def test_openssl111_deprecations(self):
     def bad_cert_test(self, certfile):
         """Check that trying to use the given client certificate fails"""
         certfile = os.path.join(os.path.dirname(__file__) or os.curdir,
-                                   certfile)
+                                "certdata", certfile)
         sock = socket.socket()
         self.addCleanup(sock.close)
         with self.assertRaises(ssl.SSLError):
@@ -951,6 +964,7 @@ def test_get_ciphers(self):
         )
 
     def test_options(self):
+        # Test default SSLContext options
         ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         # OP_ALL | OP_NO_SSLv2 | OP_NO_SSLv3 is the default value
         default = (ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3)
@@ -959,16 +973,30 @@ def test_options(self):
                     OP_SINGLE_DH_USE | OP_SINGLE_ECDH_USE |
                     OP_ENABLE_MIDDLEBOX_COMPAT)
         self.assertEqual(default, ctx.options)
+
+        # disallow TLSv1
         with warnings_helper.check_warnings():
             ctx.options |= ssl.OP_NO_TLSv1
         self.assertEqual(default | ssl.OP_NO_TLSv1, ctx.options)
+
+        # allow TLSv1
         with warnings_helper.check_warnings():
             ctx.options = (ctx.options & ~ssl.OP_NO_TLSv1)
         self.assertEqual(default, ctx.options)
+
+        # clear all options
         ctx.options = 0
         # Ubuntu has OP_NO_SSLv3 forced on by default
         self.assertEqual(0, ctx.options & ~ssl.OP_NO_SSLv3)
 
+        # invalid options
+        with self.assertRaises(OverflowError):
+            ctx.options = -1
+        with self.assertRaises(OverflowError):
+            ctx.options = 2 ** 100
+        with self.assertRaises(TypeError):
+            ctx.options = "abc"
+
     def test_verify_mode_protocol(self):
         with warnings_helper.check_warnings():
             ctx = ssl.SSLContext(ssl.PROTOCOL_TLS)
@@ -1712,6 +1740,10 @@ def test_buffer_types(self):
         self.assertEqual(bio.read(), b'bar')
         bio.write(memoryview(b'baz'))
         self.assertEqual(bio.read(), b'baz')
+        m = memoryview(bytearray(b'noncontig'))
+        noncontig_writable = m[::-2]
+        with self.assertRaises(BufferError):
+            bio.write(memoryview(noncontig_writable))
 
     def test_error_types(self):
         bio = ssl.MemoryBIO()
@@ -2155,6 +2187,7 @@ def test_timeout_connect_ex(self):
             self.assertIn(rc, (errno.EAGAIN, errno.EWOULDBLOCK))
 
     @unittest.skipUnless(socket_helper.IPV6_ENABLED, 'Needs IPv6')
+    @support.requires_resource('walltime')
     def test_get_server_certificate_ipv6(self):
         with socket_helper.transient_internet('ipv6.google.com'):
             _test_get_server_certificate(self, 'ipv6.google.com', 443)
@@ -2713,6 +2746,7 @@ def try_protocol_combo(server_protocol, client_protocol, expect_success,
 
 class ThreadedTests(unittest.TestCase):
 
+    @support.requires_resource('walltime')
     def test_echo(self):
         """Basic test of an SSL client connecting to a server"""
         if support.verbose:
@@ -3280,12 +3314,12 @@ def test_socketserver(self):
         # try to connect
         if support.verbose:
             sys.stdout.write('\n')
-        with open(CERTFILE, 'rb') as f:
+        # Get this test file itself:
+        with open(__file__, 'rb') as f:
             d1 = f.read()
         d2 = ''
         # now fetch the same data from the HTTPS server
-        url = 'https://localhost:%d/%s' % (
-            server.port, os.path.split(CERTFILE)[1])
+        url = f'https://localhost:{server.port}/test_ssl.py'
         context = ssl.create_default_context(cafile=SIGNING_CA)
         f = urllib.request.urlopen(url, context=context)
         try:
@@ -3484,6 +3518,27 @@ def test_recv_zero(self):
         self.assertEqual(s.recv(0), b"")
         self.assertEqual(s.recv_into(bytearray()), 0)
 
+    def test_recv_into_buffer_protocol_len(self):
+        server = ThreadedEchoServer(CERTFILE)
+        self.enterContext(server)
+        s = socket.create_connection((HOST, server.port))
+        self.addCleanup(s.close)
+        s = test_wrap_socket(s, suppress_ragged_eofs=False)
+        self.addCleanup(s.close)
+
+        s.send(b"data")
+        buf = array.array('I', [0, 0])
+        self.assertEqual(s.recv_into(buf), 4)
+        self.assertEqual(bytes(buf)[:4], b"data")
+
+        class B(bytearray):
+            def __len__(self):
+                1/0
+        s.send(b"data")
+        buf = B(6)
+        self.assertEqual(s.recv_into(buf), 4)
+        self.assertEqual(bytes(buf), b"data\0\0")
+
     def test_nonblocking_send(self):
         server = ThreadedEchoServer(CERTFILE,
                                     certreqs=ssl.CERT_NONE,
@@ -4203,6 +4258,107 @@ def test_session_handling(self):
                 self.assertEqual(str(e.exception),
                                  'Session refers to a different SSLContext.')
 
+    @requires_tls_version('TLSv1_2')
+    @unittest.skipUnless(ssl.HAS_PSK, 'TLS-PSK disabled on this OpenSSL build')
+    def test_psk(self):
+        psk = bytes.fromhex('deadbeef')
+
+        client_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        client_context.check_hostname = False
+        client_context.verify_mode = ssl.CERT_NONE
+        client_context.maximum_version = ssl.TLSVersion.TLSv1_2
+        client_context.set_ciphers('PSK')
+        client_context.set_psk_client_callback(lambda hint: (None, psk))
+
+        server_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+        server_context.maximum_version = ssl.TLSVersion.TLSv1_2
+        server_context.set_ciphers('PSK')
+        server_context.set_psk_server_callback(lambda identity: psk)
+
+        # correct PSK should connect
+        server = ThreadedEchoServer(context=server_context)
+        with server:
+            with client_context.wrap_socket(socket.socket()) as s:
+                s.connect((HOST, server.port))
+
+        # incorrect PSK should fail
+        incorrect_psk = bytes.fromhex('cafebabe')
+        client_context.set_psk_client_callback(lambda hint: (None, incorrect_psk))
+        server = ThreadedEchoServer(context=server_context)
+        with server:
+            with client_context.wrap_socket(socket.socket()) as s:
+                with self.assertRaises(ssl.SSLError):
+                    s.connect((HOST, server.port))
+
+        # identity_hint and client_identity should be sent to the other side
+        identity_hint = 'identity-hint'
+        client_identity = 'client-identity'
+
+        def client_callback(hint):
+            self.assertEqual(hint, identity_hint)
+            return client_identity, psk
+
+        def server_callback(identity):
+            self.assertEqual(identity, client_identity)
+            return psk
+
+        client_context.set_psk_client_callback(client_callback)
+        server_context.set_psk_server_callback(server_callback, identity_hint)
+        server = ThreadedEchoServer(context=server_context)
+        with server:
+            with client_context.wrap_socket(socket.socket()) as s:
+                s.connect((HOST, server.port))
+
+        # adding client callback to server or vice versa raises an exception
+        with self.assertRaisesRegex(ssl.SSLError, 'Cannot add PSK server callback'):
+            client_context.set_psk_server_callback(server_callback, identity_hint)
+        with self.assertRaisesRegex(ssl.SSLError, 'Cannot add PSK client callback'):
+            server_context.set_psk_client_callback(client_callback)
+
+        # test with UTF-8 identities
+        identity_hint = '身份暗示'  # Translation: "Identity hint"
+        client_identity = '客户身份'  # Translation: "Customer identity"
+
+        client_context.set_psk_client_callback(client_callback)
+        server_context.set_psk_server_callback(server_callback, identity_hint)
+        server = ThreadedEchoServer(context=server_context)
+        with server:
+            with client_context.wrap_socket(socket.socket()) as s:
+                s.connect((HOST, server.port))
+
+    @requires_tls_version('TLSv1_3')
+    @unittest.skipUnless(ssl.HAS_PSK, 'TLS-PSK disabled on this OpenSSL build')
+    def test_psk_tls1_3(self):
+        psk = bytes.fromhex('deadbeef')
+        identity_hint = 'identity-hint'
+        client_identity = 'client-identity'
+
+        def client_callback(hint):
+            # identity_hint is not sent to the client in TLS 1.3
+            self.assertIsNone(hint)
+            return client_identity, psk
+
+        def server_callback(identity):
+            self.assertEqual(identity, client_identity)
+            return psk
+
+        client_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        client_context.check_hostname = False
+        client_context.verify_mode = ssl.CERT_NONE
+        client_context.minimum_version = ssl.TLSVersion.TLSv1_3
+        client_context.set_ciphers('PSK')
+        client_context.set_psk_client_callback(client_callback)
+
+        server_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+        server_context.minimum_version = ssl.TLSVersion.TLSv1_3
+        server_context.set_ciphers('PSK')
+        server_context.set_psk_server_callback(server_callback, identity_hint)
+
+        server = ThreadedEchoServer(context=server_context)
+        with server:
+            with client_context.wrap_socket(socket.socket()) as s:
+                s.connect((HOST, server.port))
+
 
 @unittest.skipUnless(has_tls_version('TLSv1_3'), "Test needs TLS 1.3")
 class TestPostHandshakeAuth(unittest.TestCase):
@@ -4635,6 +4791,254 @@ def sni_cb(sock, servername, ctx):
                 s.connect((HOST, server.port))
 
 
+def set_socket_so_linger_on_with_zero_timeout(sock):
+    sock.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, struct.pack('ii', 1, 0))
+
+
+class TestPreHandshakeClose(unittest.TestCase):
+    """Verify behavior of close sockets with received data before to the handshake.
+    """
+
+    class SingleConnectionTestServerThread(threading.Thread):
+
+        def __init__(self, *, name, call_after_accept, timeout=None):
+            self.call_after_accept = call_after_accept
+            self.received_data = b''  # set by .run()
+            self.wrap_error = None  # set by .run()
+            self.listener = None  # set by .start()
+            self.port = None  # set by .start()
+            if timeout is None:
+                self.timeout = support.SHORT_TIMEOUT
+            else:
+                self.timeout = timeout
+            super().__init__(name=name)
+
+        def __enter__(self):
+            self.start()
+            return self
+
+        def __exit__(self, *args):
+            try:
+                if self.listener:
+                    self.listener.close()
+            except OSError:
+                pass
+            self.join()
+            self.wrap_error = None  # avoid dangling references
+
+        def start(self):
+            self.ssl_ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
+            self.ssl_ctx.verify_mode = ssl.CERT_REQUIRED
+            self.ssl_ctx.load_verify_locations(cafile=ONLYCERT)
+            self.ssl_ctx.load_cert_chain(certfile=ONLYCERT, keyfile=ONLYKEY)
+            self.listener = socket.socket()
+            self.port = socket_helper.bind_port(self.listener)
+            self.listener.settimeout(self.timeout)
+            self.listener.listen(1)
+            super().start()
+
+        def run(self):
+            try:
+                conn, address = self.listener.accept()
+            except TimeoutError:
+                # on timeout, just close the listener
+                return
+            finally:
+                self.listener.close()
+
+            with conn:
+                if self.call_after_accept(conn):
+                    return
+                try:
+                    tls_socket = self.ssl_ctx.wrap_socket(conn, server_side=True)
+                except OSError as err:  # ssl.SSLError inherits from OSError
+                    self.wrap_error = err
+                else:
+                    try:
+                        self.received_data = tls_socket.recv(400)
+                    except OSError:
+                        pass  # closed, protocol error, etc.
+
+    def non_linux_skip_if_other_okay_error(self, err):
+        if sys.platform == "linux":
+            return  # Expect the full test setup to always work on Linux.
+        if (isinstance(err, ConnectionResetError) or
+            (isinstance(err, OSError) and err.errno == errno.EINVAL) or
+            re.search('wrong.version.number', getattr(err, "reason", ""), re.I)):
+            # On Windows the TCP RST leads to a ConnectionResetError
+            # (ECONNRESET) which Linux doesn't appear to surface to userspace.
+            # If wrap_socket() winds up on the "if connected:" path and doing
+            # the actual wrapping... we get an SSLError from OpenSSL. Typically
+            # WRONG_VERSION_NUMBER. While appropriate, neither is the scenario
+            # we're specifically trying to test. The way this test is written
+            # is known to work on Linux. We'll skip it anywhere else that it
+            # does not present as doing so.
+            try:
+                self.skipTest(f"Could not recreate conditions on {sys.platform}:"
+                              f" {err=}")
+            finally:
+                # gh-108342: Explicitly break the reference cycle
+                err = None
+
+        # If maintaining this conditional winds up being a problem.
+        # just turn this into an unconditional skip anything but Linux.
+        # The important thing is that our CI has the logic covered.
+
+    def test_preauth_data_to_tls_server(self):
+        server_accept_called = threading.Event()
+        ready_for_server_wrap_socket = threading.Event()
+
+        def call_after_accept(unused):
+            server_accept_called.set()
+            if not ready_for_server_wrap_socket.wait(support.SHORT_TIMEOUT):
+                raise RuntimeError("wrap_socket event never set, test may fail.")
+            return False  # Tell the server thread to continue.
+
+        server = self.SingleConnectionTestServerThread(
+                call_after_accept=call_after_accept,
+                name="preauth_data_to_tls_server")
+        self.enterContext(server)  # starts it & unittest.TestCase stops it.
+
+        with socket.socket() as client:
+            client.connect(server.listener.getsockname())
+            # This forces an immediate connection close via RST on .close().
+            set_socket_so_linger_on_with_zero_timeout(client)
+            client.setblocking(False)
+
+            server_accept_called.wait()
+            client.send(b"DELETE /data HTTP/1.0\r\n\r\n")
+            client.close()  # RST
+
+        ready_for_server_wrap_socket.set()
+        server.join()
+
+        wrap_error = server.wrap_error
+        server.wrap_error = None
+        try:
+            self.assertEqual(b"", server.received_data)
+            self.assertIsInstance(wrap_error, OSError)  # All platforms.
+            self.non_linux_skip_if_other_okay_error(wrap_error)
+            self.assertIsInstance(wrap_error, ssl.SSLError)
+            self.assertIn("before TLS handshake with data", wrap_error.args[1])
+            self.assertIn("before TLS handshake with data", wrap_error.reason)
+            self.assertNotEqual(0, wrap_error.args[0])
+            self.assertIsNone(wrap_error.library, msg="attr must exist")
+        finally:
+            # gh-108342: Explicitly break the reference cycle
+            wrap_error = None
+            server = None
+
+    def test_preauth_data_to_tls_client(self):
+        server_can_continue_with_wrap_socket = threading.Event()
+        client_can_continue_with_wrap_socket = threading.Event()
+
+        def call_after_accept(conn_to_client):
+            if not server_can_continue_with_wrap_socket.wait(support.SHORT_TIMEOUT):
+                print("ERROR: test client took too long")
+
+            # This forces an immediate connection close via RST on .close().
+            set_socket_so_linger_on_with_zero_timeout(conn_to_client)
+            conn_to_client.send(
+                    b"HTTP/1.0 307 Temporary Redirect\r\n"
+                    b"Location: https://example.com/someone-elses-server\r\n"
+                    b"\r\n")
+            conn_to_client.close()  # RST
+            client_can_continue_with_wrap_socket.set()
+            return True  # Tell the server to stop.
+
+        server = self.SingleConnectionTestServerThread(
+                call_after_accept=call_after_accept,
+                name="preauth_data_to_tls_client")
+        self.enterContext(server)  # starts it & unittest.TestCase stops it.
+        # Redundant; call_after_accept sets SO_LINGER on the accepted conn.
+        set_socket_so_linger_on_with_zero_timeout(server.listener)
+
+        with socket.socket() as client:
+            client.connect(server.listener.getsockname())
+            server_can_continue_with_wrap_socket.set()
+
+            if not client_can_continue_with_wrap_socket.wait(support.SHORT_TIMEOUT):
+                self.fail("test server took too long")
+            ssl_ctx = ssl.create_default_context()
+            try:
+                tls_client = ssl_ctx.wrap_socket(
+                        client, server_hostname="localhost")
+            except OSError as err:  # SSLError inherits from OSError
+                wrap_error = err
+                received_data = b""
+            else:
+                wrap_error = None
+                received_data = tls_client.recv(400)
+                tls_client.close()
+
+        server.join()
+        try:
+            self.assertEqual(b"", received_data)
+            self.assertIsInstance(wrap_error, OSError)  # All platforms.
+            self.non_linux_skip_if_other_okay_error(wrap_error)
+            self.assertIsInstance(wrap_error, ssl.SSLError)
+            self.assertIn("before TLS handshake with data", wrap_error.args[1])
+            self.assertIn("before TLS handshake with data", wrap_error.reason)
+            self.assertNotEqual(0, wrap_error.args[0])
+            self.assertIsNone(wrap_error.library, msg="attr must exist")
+        finally:
+            # gh-108342: Explicitly break the reference cycle
+            wrap_error = None
+            server = None
+
+    def test_https_client_non_tls_response_ignored(self):
+        server_responding = threading.Event()
+
+        class SynchronizedHTTPSConnection(http.client.HTTPSConnection):
+            def connect(self):
+                # Call clear text HTTP connect(), not the encrypted HTTPS (TLS)
+                # connect(): wrap_socket() is called manually below.
+                http.client.HTTPConnection.connect(self)
+
+                # Wait for our fault injection server to have done its thing.
+                if not server_responding.wait(support.SHORT_TIMEOUT) and support.verbose:
+                    sys.stdout.write("server_responding event never set.")
+                self.sock = self._context.wrap_socket(
+                        self.sock, server_hostname=self.host)
+
+        def call_after_accept(conn_to_client):
+            # This forces an immediate connection close via RST on .close().
+            set_socket_so_linger_on_with_zero_timeout(conn_to_client)
+            conn_to_client.send(
+                    b"HTTP/1.0 402 Payment Required\r\n"
+                    b"\r\n")
+            conn_to_client.close()  # RST
+            server_responding.set()
+            return True  # Tell the server to stop.
+
+        timeout = 2.0
+        server = self.SingleConnectionTestServerThread(
+                call_after_accept=call_after_accept,
+                name="non_tls_http_RST_responder",
+                timeout=timeout)
+        self.enterContext(server)  # starts it & unittest.TestCase stops it.
+        # Redundant; call_after_accept sets SO_LINGER on the accepted conn.
+        set_socket_so_linger_on_with_zero_timeout(server.listener)
+
+        connection = SynchronizedHTTPSConnection(
+                server.listener.getsockname()[0],
+                port=server.port,
+                context=ssl.create_default_context(),
+                timeout=timeout,
+        )
+
+        # There are lots of reasons this raises as desired, long before this
+        # test was added. Sending the request requires a successful TLS wrapped
+        # socket; that fails if the connection is broken. It may seem pointless
+        # to test this. It serves as an illustration of something that we never
+        # want to happen... properly not happening.
+        with self.assertRaises(OSError):
+            connection.request("HEAD", "/test", headers={"Host": "localhost"})
+            response = connection.getresponse()
+
+        server.join()
+
+
 class TestEnumerations(unittest.TestCase):
 
     def test_tlsversion(self):
diff --git a/Lib/test/test_stable_abi_ctypes.py b/Lib/test/test_stable_abi_ctypes.py
index 4ca39d85e5460c..4976ac3642bbe4 100644
--- a/Lib/test/test_stable_abi_ctypes.py
+++ b/Lib/test/test_stable_abi_ctypes.py
@@ -1,5 +1,4 @@
-
-# Generated by Tools/scripts/stable_abi.py
+# Generated by Tools/build/stable_abi.py
 
 """Test that all symbols of the Stable ABI are accessible using ctypes
 """
@@ -145,7 +144,9 @@ def test_windows_feature_macros(self):
     "PyDict_DelItem",
     "PyDict_DelItemString",
     "PyDict_GetItem",
+    "PyDict_GetItemRef",
     "PyDict_GetItemString",
+    "PyDict_GetItemStringRef",
     "PyDict_GetItemWithError",
     "PyDict_Items",
     "PyDict_Keys",
@@ -329,6 +330,7 @@ def test_windows_feature_macros(self):
     "PyGetSetDescr_Type",
     "PyImport_AddModule",
     "PyImport_AddModuleObject",
+    "PyImport_AddModuleRef",
     "PyImport_AppendInittab",
     "PyImport_ExecCodeModule",
     "PyImport_ExecCodeModuleEx",
@@ -373,6 +375,7 @@ def test_windows_feature_macros(self):
     "PyList_Type",
     "PyLongRangeIter_Type",
     "PyLong_AsDouble",
+    "PyLong_AsInt",
     "PyLong_AsLong",
     "PyLong_AsLongAndOverflow",
     "PyLong_AsLongLong",
@@ -398,8 +401,12 @@ def test_windows_feature_macros(self):
     "PyMap_Type",
     "PyMapping_Check",
     "PyMapping_GetItemString",
+    "PyMapping_GetOptionalItem",
+    "PyMapping_GetOptionalItemString",
     "PyMapping_HasKey",
     "PyMapping_HasKeyString",
+    "PyMapping_HasKeyStringWithError",
+    "PyMapping_HasKeyWithError",
     "PyMapping_Items",
     "PyMapping_Keys",
     "PyMapping_Length",
@@ -411,6 +418,10 @@ def test_windows_feature_macros(self):
     "PyMem_Calloc",
     "PyMem_Free",
     "PyMem_Malloc",
+    "PyMem_RawCalloc",
+    "PyMem_RawFree",
+    "PyMem_RawMalloc",
+    "PyMem_RawRealloc",
     "PyMem_Realloc",
     "PyMemberDescr_Type",
     "PyMember_GetOne",
@@ -423,6 +434,7 @@ def test_windows_feature_macros(self):
     "PyMethodDescr_Type",
     "PyModuleDef_Init",
     "PyModuleDef_Type",
+    "PyModule_Add",
     "PyModule_AddFunctions",
     "PyModule_AddIntConstant",
     "PyModule_AddObject",
@@ -509,6 +521,8 @@ def test_windows_feature_macros(self):
     "PyObject_CheckReadBuffer",
     "PyObject_ClearWeakRefs",
     "PyObject_CopyData",
+    "PyObject_DelAttr",
+    "PyObject_DelAttrString",
     "PyObject_DelItem",
     "PyObject_DelItemString",
     "PyObject_Dir",
@@ -529,9 +543,13 @@ def test_windows_feature_macros(self):
     "PyObject_GetBuffer",
     "PyObject_GetItem",
     "PyObject_GetIter",
+    "PyObject_GetOptionalAttr",
+    "PyObject_GetOptionalAttrString",
     "PyObject_GetTypeData",
     "PyObject_HasAttr",
     "PyObject_HasAttrString",
+    "PyObject_HasAttrStringWithError",
+    "PyObject_HasAttrWithError",
     "PyObject_Hash",
     "PyObject_HashNotImplemented",
     "PyObject_Init",
@@ -608,6 +626,8 @@ def test_windows_feature_macros(self):
     "PySys_AddWarnOption",
     "PySys_AddWarnOptionUnicode",
     "PySys_AddXOption",
+    "PySys_Audit",
+    "PySys_AuditTuple",
     "PySys_FormatStderr",
     "PySys_FormatStdout",
     "PySys_GetObject",
@@ -756,6 +776,8 @@ def test_windows_feature_macros(self):
     "PyUnicode_DecodeUnicodeEscape",
     "PyUnicode_EncodeFSDefault",
     "PyUnicode_EncodeLocale",
+    "PyUnicode_EqualToUTF8",
+    "PyUnicode_EqualToUTF8AndSize",
     "PyUnicode_FSConverter",
     "PyUnicode_FSDecoder",
     "PyUnicode_Find",
@@ -794,6 +816,7 @@ def test_windows_feature_macros(self):
     "PyVectorcall_Call",
     "PyVectorcall_NARGS",
     "PyWeakref_GetObject",
+    "PyWeakref_GetRef",
     "PyWeakref_NewProxy",
     "PyWeakref_NewRef",
     "PyWrapperDescr_Type",
@@ -836,6 +859,7 @@ def test_windows_feature_macros(self):
     "Py_InitializeEx",
     "Py_Is",
     "Py_IsFalse",
+    "Py_IsFinalizing",
     "Py_IsInitialized",
     "Py_IsNone",
     "Py_IsTrue",
@@ -882,6 +906,7 @@ def test_windows_feature_macros(self):
     "_Py_IncRef",
     "_Py_NoneStruct",
     "_Py_NotImplementedStruct",
+    "_Py_SetRefcnt",
     "_Py_SwappedOp",
     "_Py_TrueStruct",
     "_Py_VaBuildValue_SizeT",
diff --git a/Lib/test/test_stat.py b/Lib/test/test_stat.py
index 4ba37aed2dc9db..0eced2fcf98376 100644
--- a/Lib/test/test_stat.py
+++ b/Lib/test/test_stat.py
@@ -122,8 +122,11 @@ def test_mode(self):
             st_mode, modestr = self.get_mode()
             self.assertEqual(modestr, '-rwx------')
             self.assertS_IS("REG", st_mode)
-            self.assertEqual(self.statmod.S_IMODE(st_mode),
+            imode = self.statmod.S_IMODE(st_mode)
+            self.assertEqual(imode,
                              self.statmod.S_IRWXU)
+            self.assertEqual(self.statmod.filemode(imode),
+                             '?rwx------')
 
             os.chmod(TESTFN, 0o070)
             st_mode, modestr = self.get_mode()
@@ -238,6 +241,7 @@ def test_file_attribute_constants(self):
             self.assertEqual(value, modvalue, key)
 
 
+@unittest.skipIf(c_stat is None, 'need _stat extension')
 class TestFilemodeCStat(TestFilemode, unittest.TestCase):
     statmod = c_stat
 
diff --git a/Lib/test/test_statistics.py b/Lib/test/test_statistics.py
index f0fa6454b1f91a..bf2c254c9ee7d9 100644
--- a/Lib/test/test_statistics.py
+++ b/Lib/test/test_statistics.py
@@ -28,6 +28,12 @@
 
 # === Helper functions and class ===
 
+# Test copied from Lib/test/test_math.py
+# detect evidence of double-rounding: fsum is not always correctly
+# rounded on machines that suffer from double rounding.
+x, y = 1e16, 2.9999 # use temporary values to defeat peephole optimizer
+HAVE_DOUBLE_ROUNDING = (x + y == 1e16 + 4)
+
 def sign(x):
     """Return -1.0 for negatives, including -0.0, otherwise +1.0."""
     return math.copysign(1, x)
@@ -692,14 +698,6 @@ def test_check_all(self):
                             'missing name "%s" in __all__' % name)
 
 
-class DocTests(unittest.TestCase):
-    @unittest.skipIf(sys.flags.optimize >= 2,
-                     "Docstrings are omitted with -OO and above")
-    def test_doc_tests(self):
-        failed, tried = doctest.testmod(statistics, optionflags=doctest.ELLIPSIS)
-        self.assertGreater(tried, 0)
-        self.assertEqual(failed, 0)
-
 class StatisticsErrorTest(unittest.TestCase):
     def test_has_exception(self):
         errmsg = (
@@ -2139,6 +2137,7 @@ def test_integer_sqrt_of_frac_rto(self):
             self.assertTrue(m * (r - 1)**2 < n < m * (r + 1)**2)
 
     @requires_IEEE_754
+    @support.requires_resource('cpu')
     def test_float_sqrt_of_frac(self):
 
         def is_root_correctly_rounded(x: Fraction, root: float) -> bool:
@@ -2303,10 +2302,12 @@ def test_error_cases(self):
         StatisticsError = statistics.StatisticsError
         with self.assertRaises(StatisticsError):
             geometric_mean([])                      # empty input
-        with self.assertRaises(StatisticsError):
-            geometric_mean([3.5, 0.0, 5.25])        # zero input
         with self.assertRaises(StatisticsError):
             geometric_mean([3.5, -4.0, 5.25])       # negative input
+        with self.assertRaises(StatisticsError):
+            geometric_mean([0.0, -4.0, 5.25])       # negative input with zero
+        with self.assertRaises(StatisticsError):
+            geometric_mean([3.5, -math.inf, 5.25])  # negative infinity
         with self.assertRaises(StatisticsError):
             geometric_mean(iter([]))                # empty iterator
         with self.assertRaises(TypeError):
@@ -2329,6 +2330,12 @@ def test_special_values(self):
         with self.assertRaises(ValueError):
             geometric_mean([Inf, -Inf])
 
+        # Cases with zero
+        self.assertEqual(geometric_mean([3, 0.0, 5]), 0.0)         # Any zero gives a zero
+        self.assertEqual(geometric_mean([3, -0.0, 5]), 0.0)        # Negative zero allowed
+        self.assertTrue(math.isnan(geometric_mean([0, NaN])))      # NaN beats zero
+        self.assertTrue(math.isnan(geometric_mean([0, Inf])))      # Because 0.0 * Inf -> NaN
+
     def test_mixed_int_and_float(self):
         # Regression test for b.p.o. issue #28327
         geometric_mean = statistics.geometric_mean
@@ -2455,6 +2462,11 @@ def f(x):
             data = random.choices(range(100), k=k)
             q1, q2, q3 = quantiles(data, method='inclusive')
             self.assertEqual(q2, statistics.median(data))
+        # Base case with a single data point:  When estimating quantiles from
+        # a sample, we want to be able to add one sample point at a time,
+        # getting increasingly better estimates.
+        self.assertEqual(quantiles([10], n=4), [10.0, 10.0, 10.0])
+        self.assertEqual(quantiles([10], n=4, method='exclusive'), [10.0, 10.0, 10.0])
 
     def test_equal_inputs(self):
         quantiles = statistics.quantiles
@@ -2505,7 +2517,7 @@ def test_error_cases(self):
         with self.assertRaises(ValueError):
             quantiles([10, 20, 30], method='X') # method is unknown
         with self.assertRaises(StatisticsError):
-            quantiles([10], n=4)                # not enough data points
+            quantiles([], n=4)                  # not enough data points
         with self.assertRaises(TypeError):
             quantiles([10, None, 30], n=4)      # data is non-numeric
 
@@ -2564,6 +2576,79 @@ def test_different_scales(self):
         self.assertAlmostEqual(statistics.correlation(x, y), 1)
         self.assertAlmostEqual(statistics.covariance(x, y), 0.1)
 
+    def test_sqrtprod_helper_function_fundamentals(self):
+        # Verify that results are close to sqrt(x * y)
+        for i in range(100):
+            x = random.expovariate()
+            y = random.expovariate()
+            expected = math.sqrt(x * y)
+            actual = statistics._sqrtprod(x, y)
+            with self.subTest(x=x, y=y, expected=expected, actual=actual):
+                self.assertAlmostEqual(expected, actual)
+
+        x, y, target = 0.8035720646477457, 0.7957468097636939, 0.7996498651651661
+        self.assertEqual(statistics._sqrtprod(x, y), target)
+        self.assertNotEqual(math.sqrt(x * y), target)
+
+        # Test that range extremes avoid underflow and overflow
+        smallest = sys.float_info.min * sys.float_info.epsilon
+        self.assertEqual(statistics._sqrtprod(smallest, smallest), smallest)
+        biggest = sys.float_info.max
+        self.assertEqual(statistics._sqrtprod(biggest, biggest), biggest)
+
+        # Check special values and the sign of the result
+        special_values = [0.0, -0.0, 1.0, -1.0, 4.0, -4.0,
+                          math.nan, -math.nan, math.inf, -math.inf]
+        for x, y in itertools.product(special_values, repeat=2):
+            try:
+                expected = math.sqrt(x * y)
+            except ValueError:
+                expected = 'ValueError'
+            try:
+                actual = statistics._sqrtprod(x, y)
+            except ValueError:
+                actual = 'ValueError'
+            with self.subTest(x=x, y=y, expected=expected, actual=actual):
+                if isinstance(expected, str) and expected == 'ValueError':
+                    self.assertEqual(actual, 'ValueError')
+                    continue
+                self.assertIsInstance(actual, float)
+                if math.isnan(expected):
+                    self.assertTrue(math.isnan(actual))
+                    continue
+                self.assertEqual(actual, expected)
+                self.assertEqual(sign(actual), sign(expected))
+
+    @requires_IEEE_754
+    @unittest.skipIf(HAVE_DOUBLE_ROUNDING,
+                     "accuracy not guaranteed on machines with double rounding")
+    @support.cpython_only    # Allow for a weaker sumprod() implmentation
+    def test_sqrtprod_helper_function_improved_accuracy(self):
+        # Test a known example where accuracy is improved
+        x, y, target = 0.8035720646477457, 0.7957468097636939, 0.7996498651651661
+        self.assertEqual(statistics._sqrtprod(x, y), target)
+        self.assertNotEqual(math.sqrt(x * y), target)
+
+        def reference_value(x: float, y: float) -> float:
+            x = decimal.Decimal(x)
+            y = decimal.Decimal(y)
+            with decimal.localcontext() as ctx:
+                ctx.prec = 200
+                return float((x * y).sqrt())
+
+        # Verify that the new function with improved accuracy
+        # agrees with a reference value more often than old version.
+        new_agreements = 0
+        old_agreements = 0
+        for i in range(10_000):
+            x = random.expovariate()
+            y = random.expovariate()
+            new = statistics._sqrtprod(x, y)
+            old = math.sqrt(x * y)
+            ref = reference_value(x, y)
+            new_agreements += (new == ref)
+            old_agreements += (old == ref)
+        self.assertGreater(new_agreements, old_agreements)
 
     def test_correlation_spearman(self):
         # https://statistics.laerd.com/statistical-guides/spearmans-rank-order-correlation-statistical-guide-2.php
@@ -2770,6 +2855,7 @@ def test_cdf(self):
         self.assertTrue(math.isnan(X.cdf(float('NaN'))))
 
     @support.skip_if_pgo_task
+    @support.requires_resource('cpu')
     def test_inv_cdf(self):
         NormalDist = self.module.NormalDist
 
@@ -3064,6 +3150,7 @@ def tearDown(self):
 def load_tests(loader, tests, ignore):
     """Used for doctest/unittest integration."""
     tests.addTests(doctest.DocTestSuite())
+    tests.addTests(doctest.DocTestSuite(statistics))
     return tests
 
 
diff --git a/Lib/test/test_str.py b/Lib/test/test_str.py
new file mode 100644
index 00000000000000..b4927113db44e3
--- /dev/null
+++ b/Lib/test/test_str.py
@@ -0,0 +1,2731 @@
+""" Test script for the Unicode implementation.
+
+Written by Marc-Andre Lemburg (mal@lemburg.com).
+
+(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
+
+"""
+import _string
+import codecs
+import itertools
+import operator
+import pickle
+import struct
+import sys
+import textwrap
+import unicodedata
+import unittest
+import warnings
+from test.support import warnings_helper
+from test import support, string_tests
+from test.support.script_helper import assert_python_failure
+
+try:
+    import _testcapi
+except ImportError:
+    _testcapi = None
+
+# Error handling (bad decoder return)
+def search_function(encoding):
+    def decode1(input, errors="strict"):
+        return 42 # not a tuple
+    def encode1(input, errors="strict"):
+        return 42 # not a tuple
+    def encode2(input, errors="strict"):
+        return (42, 42) # no unicode
+    def decode2(input, errors="strict"):
+        return (42, 42) # no unicode
+    if encoding=="test.unicode1":
+        return (encode1, decode1, None, None)
+    elif encoding=="test.unicode2":
+        return (encode2, decode2, None, None)
+    else:
+        return None
+
+def duplicate_string(text):
+    """
+    Try to get a fresh clone of the specified text:
+    new object with a reference count of 1.
+
+    This is a best-effort: latin1 single letters and the empty
+    string ('') are singletons and cannot be cloned.
+    """
+    return text.encode().decode()
+
+class StrSubclass(str):
+    pass
+
+class OtherStrSubclass(str):
+    pass
+
+class WithStr:
+    def __init__(self, value):
+        self.value = value
+    def __str__(self):
+        return self.value
+
+class WithRepr:
+    def __init__(self, value):
+        self.value = value
+    def __repr__(self):
+        return self.value
+
+class StrTest(string_tests.StringLikeTest,
+        string_tests.MixinStrUnicodeTest,
+        unittest.TestCase):
+
+    type2test = str
+
+    def setUp(self):
+        codecs.register(search_function)
+        self.addCleanup(codecs.unregister, search_function)
+
+    def checkequalnofix(self, result, object, methodname, *args):
+        method = getattr(object, methodname)
+        realresult = method(*args)
+        self.assertEqual(realresult, result)
+        self.assertTrue(type(realresult) is type(result))
+
+        # if the original is returned make sure that
+        # this doesn't happen with subclasses
+        if realresult is object:
+            class usub(str):
+                def __repr__(self):
+                    return 'usub(%r)' % str.__repr__(self)
+            object = usub(object)
+            method = getattr(object, methodname)
+            realresult = method(*args)
+            self.assertEqual(realresult, result)
+            self.assertTrue(object is not realresult)
+
+    def assertTypedEqual(self, actual, expected):
+        self.assertIs(type(actual), type(expected))
+        self.assertEqual(actual, expected)
+
+    def test_literals(self):
+        self.assertEqual('\xff', '\u00ff')
+        self.assertEqual('\uffff', '\U0000ffff')
+        self.assertRaises(SyntaxError, eval, '\'\\Ufffffffe\'')
+        self.assertRaises(SyntaxError, eval, '\'\\Uffffffff\'')
+        self.assertRaises(SyntaxError, eval, '\'\\U%08x\'' % 0x110000)
+        # raw strings should not have unicode escapes
+        self.assertNotEqual(r"\u0020", " ")
+
+    def test_ascii(self):
+        self.assertEqual(ascii('abc'), "'abc'")
+        self.assertEqual(ascii('ab\\c'), "'ab\\\\c'")
+        self.assertEqual(ascii('ab\\'), "'ab\\\\'")
+        self.assertEqual(ascii('\\c'), "'\\\\c'")
+        self.assertEqual(ascii('\\'), "'\\\\'")
+        self.assertEqual(ascii('\n'), "'\\n'")
+        self.assertEqual(ascii('\r'), "'\\r'")
+        self.assertEqual(ascii('\t'), "'\\t'")
+        self.assertEqual(ascii('\b'), "'\\x08'")
+        self.assertEqual(ascii("'\""), """'\\'"'""")
+        self.assertEqual(ascii("'\""), """'\\'"'""")
+        self.assertEqual(ascii("'"), '''"'"''')
+        self.assertEqual(ascii('"'), """'"'""")
+        latin1repr = (
+            "'\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\t\\n\\x0b\\x0c\\r"
+            "\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a"
+            "\\x1b\\x1c\\x1d\\x1e\\x1f !\"#$%&\\'()*+,-./0123456789:;<=>?@ABCDEFGHI"
+            "JKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\\x7f"
+            "\\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\\x88\\x89\\x8a\\x8b\\x8c\\x8d"
+            "\\x8e\\x8f\\x90\\x91\\x92\\x93\\x94\\x95\\x96\\x97\\x98\\x99\\x9a\\x9b"
+            "\\x9c\\x9d\\x9e\\x9f\\xa0\\xa1\\xa2\\xa3\\xa4\\xa5\\xa6\\xa7\\xa8\\xa9"
+            "\\xaa\\xab\\xac\\xad\\xae\\xaf\\xb0\\xb1\\xb2\\xb3\\xb4\\xb5\\xb6\\xb7"
+            "\\xb8\\xb9\\xba\\xbb\\xbc\\xbd\\xbe\\xbf\\xc0\\xc1\\xc2\\xc3\\xc4\\xc5"
+            "\\xc6\\xc7\\xc8\\xc9\\xca\\xcb\\xcc\\xcd\\xce\\xcf\\xd0\\xd1\\xd2\\xd3"
+            "\\xd4\\xd5\\xd6\\xd7\\xd8\\xd9\\xda\\xdb\\xdc\\xdd\\xde\\xdf\\xe0\\xe1"
+            "\\xe2\\xe3\\xe4\\xe5\\xe6\\xe7\\xe8\\xe9\\xea\\xeb\\xec\\xed\\xee\\xef"
+            "\\xf0\\xf1\\xf2\\xf3\\xf4\\xf5\\xf6\\xf7\\xf8\\xf9\\xfa\\xfb\\xfc\\xfd"
+            "\\xfe\\xff'")
+        testrepr = ascii(''.join(map(chr, range(256))))
+        self.assertEqual(testrepr, latin1repr)
+        # Test ascii works on wide unicode escapes without overflow.
+        self.assertEqual(ascii("\U00010000" * 39 + "\uffff" * 4096),
+                            ascii("\U00010000" * 39 + "\uffff" * 4096))
+
+        self.assertTypedEqual(ascii('\U0001f40d'), r"'\U0001f40d'")
+        self.assertTypedEqual(ascii(StrSubclass('abc')), "'abc'")
+        self.assertTypedEqual(ascii(WithRepr('<abc>')), '<abc>')
+        self.assertTypedEqual(ascii(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
+        self.assertTypedEqual(ascii(WithRepr('<\U0001f40d>')), r'<\U0001f40d>')
+        self.assertTypedEqual(ascii(WithRepr(StrSubclass('<\U0001f40d>'))), r'<\U0001f40d>')
+        self.assertRaises(TypeError, ascii, WithRepr(b'byte-repr'))
+
+    def test_repr(self):
+        # Test basic sanity of repr()
+        self.assertEqual(repr('abc'), "'abc'")
+        self.assertEqual(repr('ab\\c'), "'ab\\\\c'")
+        self.assertEqual(repr('ab\\'), "'ab\\\\'")
+        self.assertEqual(repr('\\c'), "'\\\\c'")
+        self.assertEqual(repr('\\'), "'\\\\'")
+        self.assertEqual(repr('\n'), "'\\n'")
+        self.assertEqual(repr('\r'), "'\\r'")
+        self.assertEqual(repr('\t'), "'\\t'")
+        self.assertEqual(repr('\b'), "'\\x08'")
+        self.assertEqual(repr("'\""), """'\\'"'""")
+        self.assertEqual(repr("'\""), """'\\'"'""")
+        self.assertEqual(repr("'"), '''"'"''')
+        self.assertEqual(repr('"'), """'"'""")
+        latin1repr = (
+            "'\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\t\\n\\x0b\\x0c\\r"
+            "\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a"
+            "\\x1b\\x1c\\x1d\\x1e\\x1f !\"#$%&\\'()*+,-./0123456789:;<=>?@ABCDEFGHI"
+            "JKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\\x7f"
+            "\\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\\x88\\x89\\x8a\\x8b\\x8c\\x8d"
+            "\\x8e\\x8f\\x90\\x91\\x92\\x93\\x94\\x95\\x96\\x97\\x98\\x99\\x9a\\x9b"
+            "\\x9c\\x9d\\x9e\\x9f\\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9"
+            "\xaa\xab\xac\\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7"
+            "\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5"
+            "\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3"
+            "\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1"
+            "\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
+            "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd"
+            "\xfe\xff'")
+        testrepr = repr(''.join(map(chr, range(256))))
+        self.assertEqual(testrepr, latin1repr)
+        # Test repr works on wide unicode escapes without overflow.
+        self.assertEqual(repr("\U00010000" * 39 + "\uffff" * 4096),
+                            repr("\U00010000" * 39 + "\uffff" * 4096))
+
+        self.assertTypedEqual(repr('\U0001f40d'), "'\U0001f40d'")
+        self.assertTypedEqual(repr(StrSubclass('abc')), "'abc'")
+        self.assertTypedEqual(repr(WithRepr('<abc>')), '<abc>')
+        self.assertTypedEqual(repr(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
+        self.assertTypedEqual(repr(WithRepr('<\U0001f40d>')), '<\U0001f40d>')
+        self.assertTypedEqual(repr(WithRepr(StrSubclass('<\U0001f40d>'))), StrSubclass('<\U0001f40d>'))
+        self.assertRaises(TypeError, repr, WithRepr(b'byte-repr'))
+
+    def test_iterators(self):
+        # Make sure unicode objects have an __iter__ method
+        it = "\u1111\u2222\u3333".__iter__()
+        self.assertEqual(next(it), "\u1111")
+        self.assertEqual(next(it), "\u2222")
+        self.assertEqual(next(it), "\u3333")
+        self.assertRaises(StopIteration, next, it)
+
+    def test_iterators_invocation(self):
+        cases = [type(iter('abc')), type(iter('🚀'))]
+        for cls in cases:
+            with self.subTest(cls=cls):
+                self.assertRaises(TypeError, cls)
+
+    def test_iteration(self):
+        cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
+        for case in cases:
+            with self.subTest(string=case):
+                self.assertEqual(case, "".join(iter(case)))
+
+    def test_exhausted_iterator(self):
+        cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
+        for case in cases:
+            with self.subTest(case=case):
+                iterator = iter(case)
+                tuple(iterator)
+                self.assertRaises(StopIteration, next, iterator)
+
+    def test_pickle_iterator(self):
+        cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
+        for case in cases:
+            with self.subTest(case=case):
+                for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                    it = iter(case)
+                    with self.subTest(proto=proto):
+                        pickled = "".join(pickle.loads(pickle.dumps(it, proto)))
+                        self.assertEqual(case, pickled)
+
+    def test_count(self):
+        string_tests.StringLikeTest.test_count(self)
+        # check mixed argument types
+        self.checkequalnofix(3,  'aaa', 'count', 'a')
+        self.checkequalnofix(0,  'aaa', 'count', 'b')
+        self.checkequalnofix(3, 'aaa', 'count',  'a')
+        self.checkequalnofix(0, 'aaa', 'count',  'b')
+        self.checkequalnofix(0, 'aaa', 'count',  'b')
+        self.checkequalnofix(1, 'aaa', 'count',  'a', -1)
+        self.checkequalnofix(3, 'aaa', 'count',  'a', -10)
+        self.checkequalnofix(2, 'aaa', 'count',  'a', 0, -1)
+        self.checkequalnofix(0, 'aaa', 'count',  'a', 0, -10)
+        # test mixed kinds
+        self.checkequal(10, '\u0102' + 'a' * 10, 'count', 'a')
+        self.checkequal(10, '\U00100304' + 'a' * 10, 'count', 'a')
+        self.checkequal(10, '\U00100304' + '\u0102' * 10, 'count', '\u0102')
+        self.checkequal(0, 'a' * 10, 'count', '\u0102')
+        self.checkequal(0, 'a' * 10, 'count', '\U00100304')
+        self.checkequal(0, '\u0102' * 10, 'count', '\U00100304')
+        self.checkequal(10, '\u0102' + 'a_' * 10, 'count', 'a_')
+        self.checkequal(10, '\U00100304' + 'a_' * 10, 'count', 'a_')
+        self.checkequal(10, '\U00100304' + '\u0102_' * 10, 'count', '\u0102_')
+        self.checkequal(0, 'a' * 10, 'count', 'a\u0102')
+        self.checkequal(0, 'a' * 10, 'count', 'a\U00100304')
+        self.checkequal(0, '\u0102' * 10, 'count', '\u0102\U00100304')
+        # test subclass
+        class MyStr(str):
+            pass
+        self.checkequal(3, MyStr('aaa'), 'count', 'a')
+
+    def test_find(self):
+        string_tests.StringLikeTest.test_find(self)
+        # test implementation details of the memchr fast path
+        self.checkequal(100, 'a' * 100 + '\u0102', 'find', '\u0102')
+        self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0201')
+        self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0120')
+        self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0220')
+        self.checkequal(100, 'a' * 100 + '\U00100304', 'find', '\U00100304')
+        self.checkequal(-1, 'a' * 100 + '\U00100304', 'find', '\U00100204')
+        self.checkequal(-1, 'a' * 100 + '\U00100304', 'find', '\U00102004')
+        # check mixed argument types
+        self.checkequalnofix(0,  'abcdefghiabc', 'find', 'abc')
+        self.checkequalnofix(9,  'abcdefghiabc', 'find', 'abc', 1)
+        self.checkequalnofix(-1, 'abcdefghiabc', 'find', 'def', 4)
+
+        # test utf-8 non-ascii char
+        self.checkequal(0, 'те�т', 'find', 'т')
+        self.checkequal(3, 'те�т', 'find', 'т', 1)
+        self.checkequal(-1, 'те�т', 'find', 'т', 1, 3)
+        self.checkequal(-1, 'те�т', 'find', 'e')  # english `e`
+        # test utf-8 non-ascii slice
+        self.checkequal(1, 'те�т те�т', 'find', 'е�')
+        self.checkequal(1, 'те�т те�т', 'find', 'е�', 1)
+        self.checkequal(1, 'те�т те�т', 'find', 'е�', 1, 3)
+        self.checkequal(6, 'те�т те�т', 'find', 'е�', 2)
+        self.checkequal(-1, 'те�т те�т', 'find', 'е�', 6, 7)
+        self.checkequal(-1, 'те�т те�т', 'find', 'е�', 7)
+        self.checkequal(-1, 'те�т те�т', 'find', 'ec')  # english `ec`
+
+        self.assertRaises(TypeError, 'hello'.find)
+        self.assertRaises(TypeError, 'hello'.find, 42)
+        # test mixed kinds
+        self.checkequal(100, '\u0102' * 100 + 'a', 'find', 'a')
+        self.checkequal(100, '\U00100304' * 100 + 'a', 'find', 'a')
+        self.checkequal(100, '\U00100304' * 100 + '\u0102', 'find', '\u0102')
+        self.checkequal(-1, 'a' * 100, 'find', '\u0102')
+        self.checkequal(-1, 'a' * 100, 'find', '\U00100304')
+        self.checkequal(-1, '\u0102' * 100, 'find', '\U00100304')
+        self.checkequal(100, '\u0102' * 100 + 'a_', 'find', 'a_')
+        self.checkequal(100, '\U00100304' * 100 + 'a_', 'find', 'a_')
+        self.checkequal(100, '\U00100304' * 100 + '\u0102_', 'find', '\u0102_')
+        self.checkequal(-1, 'a' * 100, 'find', 'a\u0102')
+        self.checkequal(-1, 'a' * 100, 'find', 'a\U00100304')
+        self.checkequal(-1, '\u0102' * 100, 'find', '\u0102\U00100304')
+
+    def test_rfind(self):
+        string_tests.StringLikeTest.test_rfind(self)
+        # test implementation details of the memrchr fast path
+        self.checkequal(0, '\u0102' + 'a' * 100 , 'rfind', '\u0102')
+        self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0201')
+        self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0120')
+        self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0220')
+        self.checkequal(0, '\U00100304' + 'a' * 100, 'rfind', '\U00100304')
+        self.checkequal(-1, '\U00100304' + 'a' * 100, 'rfind', '\U00100204')
+        self.checkequal(-1, '\U00100304' + 'a' * 100, 'rfind', '\U00102004')
+        # check mixed argument types
+        self.checkequalnofix(9,   'abcdefghiabc', 'rfind', 'abc')
+        self.checkequalnofix(12,  'abcdefghiabc', 'rfind', '')
+        self.checkequalnofix(12, 'abcdefghiabc', 'rfind',  '')
+        # test utf-8 non-ascii char
+        self.checkequal(1, 'те�т', 'rfind', 'е')
+        self.checkequal(1, 'те�т', 'rfind', 'е', 1)
+        self.checkequal(-1, 'те�т', 'rfind', 'е', 2)
+        self.checkequal(-1, 'те�т', 'rfind', 'e')  # english `e`
+        # test utf-8 non-ascii slice
+        self.checkequal(6, 'те�т те�т', 'rfind', 'е�')
+        self.checkequal(6, 'те�т те�т', 'rfind', 'е�', 1)
+        self.checkequal(1, 'те�т те�т', 'rfind', 'е�', 1, 3)
+        self.checkequal(6, 'те�т те�т', 'rfind', 'е�', 2)
+        self.checkequal(-1, 'те�т те�т', 'rfind', 'е�', 6, 7)
+        self.checkequal(-1, 'те�т те�т', 'rfind', 'е�', 7)
+        self.checkequal(-1, 'те�т те�т', 'rfind', 'ec')  # english `ec`
+        # test mixed kinds
+        self.checkequal(0, 'a' + '\u0102' * 100, 'rfind', 'a')
+        self.checkequal(0, 'a' + '\U00100304' * 100, 'rfind', 'a')
+        self.checkequal(0, '\u0102' + '\U00100304' * 100, 'rfind', '\u0102')
+        self.checkequal(-1, 'a' * 100, 'rfind', '\u0102')
+        self.checkequal(-1, 'a' * 100, 'rfind', '\U00100304')
+        self.checkequal(-1, '\u0102' * 100, 'rfind', '\U00100304')
+        self.checkequal(0, '_a' + '\u0102' * 100, 'rfind', '_a')
+        self.checkequal(0, '_a' + '\U00100304' * 100, 'rfind', '_a')
+        self.checkequal(0, '_\u0102' + '\U00100304' * 100, 'rfind', '_\u0102')
+        self.checkequal(-1, 'a' * 100, 'rfind', '\u0102a')
+        self.checkequal(-1, 'a' * 100, 'rfind', '\U00100304a')
+        self.checkequal(-1, '\u0102' * 100, 'rfind', '\U00100304\u0102')
+
+    def test_index(self):
+        string_tests.StringLikeTest.test_index(self)
+        self.checkequalnofix(0, 'abcdefghiabc', 'index',  '')
+        self.checkequalnofix(3, 'abcdefghiabc', 'index',  'def')
+        self.checkequalnofix(0, 'abcdefghiabc', 'index',  'abc')
+        self.checkequalnofix(9, 'abcdefghiabc', 'index',  'abc', 1)
+        self.assertRaises(ValueError, 'abcdefghiabc'.index, 'hib')
+        self.assertRaises(ValueError, 'abcdefghiab'.index,  'abc', 1)
+        self.assertRaises(ValueError, 'abcdefghi'.index,  'ghi', 8)
+        self.assertRaises(ValueError, 'abcdefghi'.index,  'ghi', -1)
+        # test mixed kinds
+        self.checkequal(100, '\u0102' * 100 + 'a', 'index', 'a')
+        self.checkequal(100, '\U00100304' * 100 + 'a', 'index', 'a')
+        self.checkequal(100, '\U00100304' * 100 + '\u0102', 'index', '\u0102')
+        self.assertRaises(ValueError, ('a' * 100).index, '\u0102')
+        self.assertRaises(ValueError, ('a' * 100).index, '\U00100304')
+        self.assertRaises(ValueError, ('\u0102' * 100).index, '\U00100304')
+        self.checkequal(100, '\u0102' * 100 + 'a_', 'index', 'a_')
+        self.checkequal(100, '\U00100304' * 100 + 'a_', 'index', 'a_')
+        self.checkequal(100, '\U00100304' * 100 + '\u0102_', 'index', '\u0102_')
+        self.assertRaises(ValueError, ('a' * 100).index, 'a\u0102')
+        self.assertRaises(ValueError, ('a' * 100).index, 'a\U00100304')
+        self.assertRaises(ValueError, ('\u0102' * 100).index, '\u0102\U00100304')
+
+    def test_rindex(self):
+        string_tests.StringLikeTest.test_rindex(self)
+        self.checkequalnofix(12, 'abcdefghiabc', 'rindex',  '')
+        self.checkequalnofix(3,  'abcdefghiabc', 'rindex',  'def')
+        self.checkequalnofix(9,  'abcdefghiabc', 'rindex',  'abc')
+        self.checkequalnofix(0,  'abcdefghiabc', 'rindex',  'abc', 0, -1)
+
+        self.assertRaises(ValueError, 'abcdefghiabc'.rindex,  'hib')
+        self.assertRaises(ValueError, 'defghiabc'.rindex,  'def', 1)
+        self.assertRaises(ValueError, 'defghiabc'.rindex,  'abc', 0, -1)
+        self.assertRaises(ValueError, 'abcdefghi'.rindex,  'ghi', 0, 8)
+        self.assertRaises(ValueError, 'abcdefghi'.rindex,  'ghi', 0, -1)
+        # test mixed kinds
+        self.checkequal(0, 'a' + '\u0102' * 100, 'rindex', 'a')
+        self.checkequal(0, 'a' + '\U00100304' * 100, 'rindex', 'a')
+        self.checkequal(0, '\u0102' + '\U00100304' * 100, 'rindex', '\u0102')
+        self.assertRaises(ValueError, ('a' * 100).rindex, '\u0102')
+        self.assertRaises(ValueError, ('a' * 100).rindex, '\U00100304')
+        self.assertRaises(ValueError, ('\u0102' * 100).rindex, '\U00100304')
+        self.checkequal(0, '_a' + '\u0102' * 100, 'rindex', '_a')
+        self.checkequal(0, '_a' + '\U00100304' * 100, 'rindex', '_a')
+        self.checkequal(0, '_\u0102' + '\U00100304' * 100, 'rindex', '_\u0102')
+        self.assertRaises(ValueError, ('a' * 100).rindex, '\u0102a')
+        self.assertRaises(ValueError, ('a' * 100).rindex, '\U00100304a')
+        self.assertRaises(ValueError, ('\u0102' * 100).rindex, '\U00100304\u0102')
+
+    def test_maketrans_translate(self):
+        # these work with plain translate()
+        self.checkequalnofix('bbbc', 'abababc', 'translate',
+                             {ord('a'): None})
+        self.checkequalnofix('iiic', 'abababc', 'translate',
+                             {ord('a'): None, ord('b'): ord('i')})
+        self.checkequalnofix('iiix', 'abababc', 'translate',
+                             {ord('a'): None, ord('b'): ord('i'), ord('c'): 'x'})
+        self.checkequalnofix('c', 'abababc', 'translate',
+                             {ord('a'): None, ord('b'): ''})
+        self.checkequalnofix('xyyx', 'xzx', 'translate',
+                             {ord('z'): 'yy'})
+
+        # this needs maketrans()
+        self.checkequalnofix('abababc', 'abababc', 'translate',
+                             {'b': '<i>'})
+        tbl = self.type2test.maketrans({'a': None, 'b': '<i>'})
+        self.checkequalnofix('<i><i><i>c', 'abababc', 'translate', tbl)
+        # test alternative way of calling maketrans()
+        tbl = self.type2test.maketrans('abc', 'xyz', 'd')
+        self.checkequalnofix('xyzzy', 'abdcdcbdddd', 'translate', tbl)
+
+        # various tests switching from ASCII to latin1 or the opposite;
+        # same length, remove a letter, or replace with a longer string.
+        self.assertEqual("[a]".translate(str.maketrans('a', 'X')),
+                         "[X]")
+        self.assertEqual("[a]".translate(str.maketrans({'a': 'X'})),
+                         "[X]")
+        self.assertEqual("[a]".translate(str.maketrans({'a': None})),
+                         "[]")
+        self.assertEqual("[a]".translate(str.maketrans({'a': 'XXX'})),
+                         "[XXX]")
+        self.assertEqual("[a]".translate(str.maketrans({'a': '\xe9'})),
+                         "[\xe9]")
+        self.assertEqual('axb'.translate(str.maketrans({'a': None, 'b': '123'})),
+                         "x123")
+        self.assertEqual('axb'.translate(str.maketrans({'a': None, 'b': '\xe9'})),
+                         "x\xe9")
+
+        # test non-ASCII (don't take the fast-path)
+        self.assertEqual("[a]".translate(str.maketrans({'a': '<\xe9>'})),
+                         "[<\xe9>]")
+        self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': 'a'})),
+                         "[a]")
+        self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': None})),
+                         "[]")
+        self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': '123'})),
+                         "[123]")
+        self.assertEqual("[a\xe9]".translate(str.maketrans({'a': '<\u20ac>'})),
+                         "[<\u20ac>\xe9]")
+
+        # invalid Unicode characters
+        invalid_char = 0x10ffff+1
+        for before in "a\xe9\u20ac\U0010ffff":
+            mapping = str.maketrans({before: invalid_char})
+            text = "[%s]" % before
+            self.assertRaises(ValueError, text.translate, mapping)
+
+        # errors
+        self.assertRaises(TypeError, self.type2test.maketrans)
+        self.assertRaises(ValueError, self.type2test.maketrans, 'abc', 'defg')
+        self.assertRaises(TypeError, self.type2test.maketrans, 2, 'def')
+        self.assertRaises(TypeError, self.type2test.maketrans, 'abc', 2)
+        self.assertRaises(TypeError, self.type2test.maketrans, 'abc', 'def', 2)
+        self.assertRaises(ValueError, self.type2test.maketrans, {'xy': 2})
+        self.assertRaises(TypeError, self.type2test.maketrans, {(1,): 2})
+
+        self.assertRaises(TypeError, 'hello'.translate)
+        self.assertRaises(TypeError, 'abababc'.translate, 'abc', 'xyz')
+
+    def test_split(self):
+        string_tests.StringLikeTest.test_split(self)
+
+        # test mixed kinds
+        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
+            left *= 9
+            right *= 9
+            for delim in ('c', '\u0102', '\U00010302'):
+                self.checkequal([left + right],
+                                left + right, 'split', delim)
+                self.checkequal([left, right],
+                                left + delim + right, 'split', delim)
+                self.checkequal([left + right],
+                                left + right, 'split', delim * 2)
+                self.checkequal([left, right],
+                                left + delim * 2 + right, 'split', delim *2)
+
+    def test_rsplit(self):
+        string_tests.StringLikeTest.test_rsplit(self)
+        # test mixed kinds
+        for left, right in ('ba', 'ÑŽÑ‘', '\u0101\u0100', '\U00010301\U00010300'):
+            left *= 9
+            right *= 9
+            for delim in ('c', 'Ñ‹', '\u0102', '\U00010302'):
+                self.checkequal([left + right],
+                                left + right, 'rsplit', delim)
+                self.checkequal([left, right],
+                                left + delim + right, 'rsplit', delim)
+                self.checkequal([left + right],
+                                left + right, 'rsplit', delim * 2)
+                self.checkequal([left, right],
+                                left + delim * 2 + right, 'rsplit', delim *2)
+
+            # Check `None` as well:
+            self.checkequal([left + right],
+                             left + right, 'rsplit', None)
+
+    def test_partition(self):
+        string_tests.StringLikeTest.test_partition(self)
+        # test mixed kinds
+        self.checkequal(('ABCDEFGH', '', ''), 'ABCDEFGH', 'partition', '\u4200')
+        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
+            left *= 9
+            right *= 9
+            for delim in ('c', '\u0102', '\U00010302'):
+                self.checkequal((left + right, '', ''),
+                                left + right, 'partition', delim)
+                self.checkequal((left, delim, right),
+                                left + delim + right, 'partition', delim)
+                self.checkequal((left + right, '', ''),
+                                left + right, 'partition', delim * 2)
+                self.checkequal((left, delim * 2, right),
+                                left + delim * 2 + right, 'partition', delim * 2)
+
+    def test_rpartition(self):
+        string_tests.StringLikeTest.test_rpartition(self)
+        # test mixed kinds
+        self.checkequal(('', '', 'ABCDEFGH'), 'ABCDEFGH', 'rpartition', '\u4200')
+        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
+            left *= 9
+            right *= 9
+            for delim in ('c', '\u0102', '\U00010302'):
+                self.checkequal(('', '', left + right),
+                                left + right, 'rpartition', delim)
+                self.checkequal((left, delim, right),
+                                left + delim + right, 'rpartition', delim)
+                self.checkequal(('', '', left + right),
+                                left + right, 'rpartition', delim * 2)
+                self.checkequal((left, delim * 2, right),
+                                left + delim * 2 + right, 'rpartition', delim * 2)
+
+    def test_join(self):
+        string_tests.StringLikeTest.test_join(self)
+
+        class MyWrapper:
+            def __init__(self, sval): self.sval = sval
+            def __str__(self): return self.sval
+
+        # mixed arguments
+        self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
+        self.checkequalnofix('abcd', '', 'join', ('a', 'b', 'c', 'd'))
+        self.checkequalnofix('w x y z', ' ', 'join', string_tests.Sequence('wxyz'))
+        self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
+        self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
+        self.checkequalnofix('abcd', '', 'join', ('a', 'b', 'c', 'd'))
+        self.checkequalnofix('w x y z', ' ', 'join', string_tests.Sequence('wxyz'))
+        self.checkraises(TypeError, ' ', 'join', ['1', '2', MyWrapper('foo')])
+        self.checkraises(TypeError, ' ', 'join', ['1', '2', '3', bytes()])
+        self.checkraises(TypeError, ' ', 'join', [1, 2, 3])
+        self.checkraises(TypeError, ' ', 'join', ['1', '2', 3])
+
+    @unittest.skipIf(sys.maxsize > 2**32,
+        'needs too much memory on a 64-bit platform')
+    def test_join_overflow(self):
+        size = int(sys.maxsize**0.5) + 1
+        seq = ('A' * size,) * size
+        self.assertRaises(OverflowError, ''.join, seq)
+
+    def test_replace(self):
+        string_tests.StringLikeTest.test_replace(self)
+
+        # method call forwarded from str implementation because of unicode argument
+        self.checkequalnofix('one@two!three!', 'one!two!three!', 'replace', '!', '@', 1)
+        self.assertRaises(TypeError, 'replace'.replace, "r", 42)
+        # test mixed kinds
+        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
+            left *= 9
+            right *= 9
+            for delim in ('c', '\u0102', '\U00010302'):
+                for repl in ('d', '\u0103', '\U00010303'):
+                    self.checkequal(left + right,
+                                    left + right, 'replace', delim, repl)
+                    self.checkequal(left + repl + right,
+                                    left + delim + right,
+                                    'replace', delim, repl)
+                    self.checkequal(left + right,
+                                    left + right, 'replace', delim * 2, repl)
+                    self.checkequal(left + repl + right,
+                                    left + delim * 2 + right,
+                                    'replace', delim * 2, repl)
+
+    @support.cpython_only
+    def test_replace_id(self):
+        pattern = 'abc'
+        text = 'abc def'
+        self.assertIs(text.replace(pattern, pattern), text)
+
+    def test_repeat_id_preserving(self):
+        a = '123abc1@'
+        b = '456zyx-+'
+        self.assertEqual(id(a), id(a))
+        self.assertNotEqual(id(a), id(b))
+        self.assertNotEqual(id(a), id(a * -4))
+        self.assertNotEqual(id(a), id(a * 0))
+        self.assertEqual(id(a), id(a * 1))
+        self.assertEqual(id(a), id(1 * a))
+        self.assertNotEqual(id(a), id(a * 2))
+
+        class SubStr(str):
+            pass
+
+        s = SubStr('qwerty()')
+        self.assertEqual(id(s), id(s))
+        self.assertNotEqual(id(s), id(s * -4))
+        self.assertNotEqual(id(s), id(s * 0))
+        self.assertNotEqual(id(s), id(s * 1))
+        self.assertNotEqual(id(s), id(1 * s))
+        self.assertNotEqual(id(s), id(s * 2))
+
+    def test_bytes_comparison(self):
+        with warnings_helper.check_warnings():
+            warnings.simplefilter('ignore', BytesWarning)
+            self.assertEqual('abc' == b'abc', False)
+            self.assertEqual('abc' != b'abc', True)
+            self.assertEqual('abc' == bytearray(b'abc'), False)
+            self.assertEqual('abc' != bytearray(b'abc'), True)
+
+    def test_comparison(self):
+        # Comparisons:
+        self.assertEqual('abc', 'abc')
+        self.assertTrue('abcd' > 'abc')
+        self.assertTrue('abc' < 'abcd')
+
+        if 0:
+            # Move these tests to a Unicode collation module test...
+            # Testing UTF-16 code point order comparisons...
+
+            # No surrogates, no fixup required.
+            self.assertTrue('\u0061' < '\u20ac')
+            # Non surrogate below surrogate value, no fixup required
+            self.assertTrue('\u0061' < '\ud800\udc02')
+
+            # Non surrogate above surrogate value, fixup required
+            def test_lecmp(s, s2):
+                self.assertTrue(s < s2)
+
+            def test_fixup(s):
+                s2 = '\ud800\udc01'
+                test_lecmp(s, s2)
+                s2 = '\ud900\udc01'
+                test_lecmp(s, s2)
+                s2 = '\uda00\udc01'
+                test_lecmp(s, s2)
+                s2 = '\udb00\udc01'
+                test_lecmp(s, s2)
+                s2 = '\ud800\udd01'
+                test_lecmp(s, s2)
+                s2 = '\ud900\udd01'
+                test_lecmp(s, s2)
+                s2 = '\uda00\udd01'
+                test_lecmp(s, s2)
+                s2 = '\udb00\udd01'
+                test_lecmp(s, s2)
+                s2 = '\ud800\ude01'
+                test_lecmp(s, s2)
+                s2 = '\ud900\ude01'
+                test_lecmp(s, s2)
+                s2 = '\uda00\ude01'
+                test_lecmp(s, s2)
+                s2 = '\udb00\ude01'
+                test_lecmp(s, s2)
+                s2 = '\ud800\udfff'
+                test_lecmp(s, s2)
+                s2 = '\ud900\udfff'
+                test_lecmp(s, s2)
+                s2 = '\uda00\udfff'
+                test_lecmp(s, s2)
+                s2 = '\udb00\udfff'
+                test_lecmp(s, s2)
+
+                test_fixup('\ue000')
+                test_fixup('\uff61')
+
+        # Surrogates on both sides, no fixup required
+        self.assertTrue('\ud800\udc02' < '\ud84d\udc56')
+
+    def test_islower(self):
+        super().test_islower()
+        self.checkequalnofix(False, '\u1FFc', 'islower')
+        self.assertFalse('\u2167'.islower())
+        self.assertTrue('\u2177'.islower())
+        # non-BMP, uppercase
+        self.assertFalse('\U00010401'.islower())
+        self.assertFalse('\U00010427'.islower())
+        # non-BMP, lowercase
+        self.assertTrue('\U00010429'.islower())
+        self.assertTrue('\U0001044E'.islower())
+        # non-BMP, non-cased
+        self.assertFalse('\U0001F40D'.islower())
+        self.assertFalse('\U0001F46F'.islower())
+
+    def test_isupper(self):
+        super().test_isupper()
+        self.checkequalnofix(False, '\u1FFc', 'isupper')
+        self.assertTrue('\u2167'.isupper())
+        self.assertFalse('\u2177'.isupper())
+        # non-BMP, uppercase
+        self.assertTrue('\U00010401'.isupper())
+        self.assertTrue('\U00010427'.isupper())
+        # non-BMP, lowercase
+        self.assertFalse('\U00010429'.isupper())
+        self.assertFalse('\U0001044E'.isupper())
+        # non-BMP, non-cased
+        self.assertFalse('\U0001F40D'.isupper())
+        self.assertFalse('\U0001F46F'.isupper())
+
+    def test_istitle(self):
+        super().test_istitle()
+        self.checkequalnofix(True, '\u1FFc', 'istitle')
+        self.checkequalnofix(True, 'Greek \u1FFcitlecases ...', 'istitle')
+
+        # non-BMP, uppercase + lowercase
+        self.assertTrue('\U00010401\U00010429'.istitle())
+        self.assertTrue('\U00010427\U0001044E'.istitle())
+        # apparently there are no titlecased (Lt) non-BMP chars in Unicode 6
+        for ch in ['\U00010429', '\U0001044E', '\U0001F40D', '\U0001F46F']:
+            self.assertFalse(ch.istitle(), '{!a} is not title'.format(ch))
+
+    def test_isspace(self):
+        super().test_isspace()
+        self.checkequalnofix(True, '\u2000', 'isspace')
+        self.checkequalnofix(True, '\u200a', 'isspace')
+        self.checkequalnofix(False, '\u2014', 'isspace')
+        # There are no non-BMP whitespace chars as of Unicode 12.
+        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
+                   '\U0001F40D', '\U0001F46F']:
+            self.assertFalse(ch.isspace(), '{!a} is not space.'.format(ch))
+
+    @support.requires_resource('cpu')
+    def test_isspace_invariant(self):
+        for codepoint in range(sys.maxunicode + 1):
+            char = chr(codepoint)
+            bidirectional = unicodedata.bidirectional(char)
+            category = unicodedata.category(char)
+            self.assertEqual(char.isspace(),
+                             (bidirectional in ('WS', 'B', 'S')
+                              or category == 'Zs'))
+
+    def test_isalnum(self):
+        super().test_isalnum()
+        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
+                   '\U0001D7F6', '\U00011066', '\U000104A0', '\U0001F107']:
+            self.assertTrue(ch.isalnum(), '{!a} is alnum.'.format(ch))
+
+    def test_isalpha(self):
+        super().test_isalpha()
+        self.checkequalnofix(True, '\u1FFc', 'isalpha')
+        # non-BMP, cased
+        self.assertTrue('\U00010401'.isalpha())
+        self.assertTrue('\U00010427'.isalpha())
+        self.assertTrue('\U00010429'.isalpha())
+        self.assertTrue('\U0001044E'.isalpha())
+        # non-BMP, non-cased
+        self.assertFalse('\U0001F40D'.isalpha())
+        self.assertFalse('\U0001F46F'.isalpha())
+
+    def test_isascii(self):
+        super().test_isascii()
+        self.assertFalse("\u20ac".isascii())
+        self.assertFalse("\U0010ffff".isascii())
+
+    def test_isdecimal(self):
+        self.checkequalnofix(False, '', 'isdecimal')
+        self.checkequalnofix(False, 'a', 'isdecimal')
+        self.checkequalnofix(True, '0', 'isdecimal')
+        self.checkequalnofix(False, '\u2460', 'isdecimal') # CIRCLED DIGIT ONE
+        self.checkequalnofix(False, '\xbc', 'isdecimal') # VULGAR FRACTION ONE QUARTER
+        self.checkequalnofix(True, '\u0660', 'isdecimal') # ARABIC-INDIC DIGIT ZERO
+        self.checkequalnofix(True, '0123456789', 'isdecimal')
+        self.checkequalnofix(False, '0123456789a', 'isdecimal')
+
+        self.checkraises(TypeError, 'abc', 'isdecimal', 42)
+
+        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
+                   '\U0001F40D', '\U0001F46F', '\U00011065', '\U0001F107']:
+            self.assertFalse(ch.isdecimal(), '{!a} is not decimal.'.format(ch))
+        for ch in ['\U0001D7F6', '\U00011066', '\U000104A0']:
+            self.assertTrue(ch.isdecimal(), '{!a} is decimal.'.format(ch))
+
+    def test_isdigit(self):
+        super().test_isdigit()
+        self.checkequalnofix(True, '\u2460', 'isdigit')
+        self.checkequalnofix(False, '\xbc', 'isdigit')
+        self.checkequalnofix(True, '\u0660', 'isdigit')
+
+        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
+                   '\U0001F40D', '\U0001F46F', '\U00011065']:
+            self.assertFalse(ch.isdigit(), '{!a} is not a digit.'.format(ch))
+        for ch in ['\U0001D7F6', '\U00011066', '\U000104A0', '\U0001F107']:
+            self.assertTrue(ch.isdigit(), '{!a} is a digit.'.format(ch))
+
+    def test_isnumeric(self):
+        self.checkequalnofix(False, '', 'isnumeric')
+        self.checkequalnofix(False, 'a', 'isnumeric')
+        self.checkequalnofix(True, '0', 'isnumeric')
+        self.checkequalnofix(True, '\u2460', 'isnumeric')
+        self.checkequalnofix(True, '\xbc', 'isnumeric')
+        self.checkequalnofix(True, '\u0660', 'isnumeric')
+        self.checkequalnofix(True, '0123456789', 'isnumeric')
+        self.checkequalnofix(False, '0123456789a', 'isnumeric')
+
+        self.assertRaises(TypeError, "abc".isnumeric, 42)
+
+        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
+                   '\U0001F40D', '\U0001F46F']:
+            self.assertFalse(ch.isnumeric(), '{!a} is not numeric.'.format(ch))
+        for ch in ['\U00011065', '\U0001D7F6', '\U00011066',
+                   '\U000104A0', '\U0001F107']:
+            self.assertTrue(ch.isnumeric(), '{!a} is numeric.'.format(ch))
+
+    def test_isidentifier(self):
+        self.assertTrue("a".isidentifier())
+        self.assertTrue("Z".isidentifier())
+        self.assertTrue("_".isidentifier())
+        self.assertTrue("b0".isidentifier())
+        self.assertTrue("bc".isidentifier())
+        self.assertTrue("b_".isidentifier())
+        self.assertTrue("µ".isidentifier())
+        self.assertTrue("�������".isidentifier())
+
+        self.assertFalse(" ".isidentifier())
+        self.assertFalse("[".isidentifier())
+        self.assertFalse("©".isidentifier())
+        self.assertFalse("0".isidentifier())
+
+    def test_isprintable(self):
+        self.assertTrue("".isprintable())
+        self.assertTrue(" ".isprintable())
+        self.assertTrue("abcdefg".isprintable())
+        self.assertFalse("abcdefg\n".isprintable())
+        # some defined Unicode character
+        self.assertTrue("\u0374".isprintable())
+        # undefined character
+        self.assertFalse("\u0378".isprintable())
+        # single surrogate character
+        self.assertFalse("\ud800".isprintable())
+
+        self.assertTrue('\U0001F46F'.isprintable())
+        self.assertFalse('\U000E0020'.isprintable())
+
+    def test_surrogates(self):
+        for s in ('a\uD800b\uDFFF', 'a\uDFFFb\uD800',
+                  'a\uD800b\uDFFFa', 'a\uDFFFb\uD800a'):
+            self.assertTrue(s.islower())
+            self.assertFalse(s.isupper())
+            self.assertFalse(s.istitle())
+        for s in ('A\uD800B\uDFFF', 'A\uDFFFB\uD800',
+                  'A\uD800B\uDFFFA', 'A\uDFFFB\uD800A'):
+            self.assertFalse(s.islower())
+            self.assertTrue(s.isupper())
+            self.assertTrue(s.istitle())
+
+        for meth_name in ('islower', 'isupper', 'istitle'):
+            meth = getattr(str, meth_name)
+            for s in ('\uD800', '\uDFFF', '\uD800\uD800', '\uDFFF\uDFFF'):
+                self.assertFalse(meth(s), '%a.%s() is False' % (s, meth_name))
+
+        for meth_name in ('isalpha', 'isalnum', 'isdigit', 'isspace',
+                          'isdecimal', 'isnumeric',
+                          'isidentifier', 'isprintable'):
+            meth = getattr(str, meth_name)
+            for s in ('\uD800', '\uDFFF', '\uD800\uD800', '\uDFFF\uDFFF',
+                      'a\uD800b\uDFFF', 'a\uDFFFb\uD800',
+                      'a\uD800b\uDFFFa', 'a\uDFFFb\uD800a'):
+                self.assertFalse(meth(s), '%a.%s() is False' % (s, meth_name))
+
+
+    def test_lower(self):
+        string_tests.StringLikeTest.test_lower(self)
+        self.assertEqual('\U00010427'.lower(), '\U0001044F')
+        self.assertEqual('\U00010427\U00010427'.lower(),
+                         '\U0001044F\U0001044F')
+        self.assertEqual('\U00010427\U0001044F'.lower(),
+                         '\U0001044F\U0001044F')
+        self.assertEqual('X\U00010427x\U0001044F'.lower(),
+                         'x\U0001044Fx\U0001044F')
+        self.assertEqual('�'.lower(), '�')
+        self.assertEqual('\u0130'.lower(), '\u0069\u0307')
+        # Special case for GREEK CAPITAL LETTER SIGMA U+03A3
+        self.assertEqual('\u03a3'.lower(), '\u03c3')
+        self.assertEqual('\u0345\u03a3'.lower(), '\u0345\u03c3')
+        self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
+        self.assertEqual('A\u0345\u03a3a'.lower(), 'a\u0345\u03c3a')
+        self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
+        self.assertEqual('A\u03a3\u0345'.lower(), 'a\u03c2\u0345')
+        self.assertEqual('\u03a3\u0345 '.lower(), '\u03c3\u0345 ')
+        self.assertEqual('\U0008fffe'.lower(), '\U0008fffe')
+        self.assertEqual('\u2177'.lower(), '\u2177')
+
+    def test_casefold(self):
+        self.assertEqual('hello'.casefold(), 'hello')
+        self.assertEqual('hELlo'.casefold(), 'hello')
+        self.assertEqual('ß'.casefold(), 'ss')
+        self.assertEqual('�'.casefold(), 'fi')
+        self.assertEqual('\u03a3'.casefold(), '\u03c3')
+        self.assertEqual('A\u0345\u03a3'.casefold(), 'a\u03b9\u03c3')
+        self.assertEqual('\u00b5'.casefold(), '\u03bc')
+
+    def test_upper(self):
+        string_tests.StringLikeTest.test_upper(self)
+        self.assertEqual('\U0001044F'.upper(), '\U00010427')
+        self.assertEqual('\U0001044F\U0001044F'.upper(),
+                         '\U00010427\U00010427')
+        self.assertEqual('\U00010427\U0001044F'.upper(),
+                         '\U00010427\U00010427')
+        self.assertEqual('X\U00010427x\U0001044F'.upper(),
+                         'X\U00010427X\U00010427')
+        self.assertEqual('�'.upper(), 'FI')
+        self.assertEqual('\u0130'.upper(), '\u0130')
+        self.assertEqual('\u03a3'.upper(), '\u03a3')
+        self.assertEqual('ß'.upper(), 'SS')
+        self.assertEqual('\u1fd2'.upper(), '\u0399\u0308\u0300')
+        self.assertEqual('\U0008fffe'.upper(), '\U0008fffe')
+        self.assertEqual('\u2177'.upper(), '\u2167')
+
+    def test_capitalize(self):
+        string_tests.StringLikeTest.test_capitalize(self)
+        self.assertEqual('\U0001044F'.capitalize(), '\U00010427')
+        self.assertEqual('\U0001044F\U0001044F'.capitalize(),
+                         '\U00010427\U0001044F')
+        self.assertEqual('\U00010427\U0001044F'.capitalize(),
+                         '\U00010427\U0001044F')
+        self.assertEqual('\U0001044F\U00010427'.capitalize(),
+                         '\U00010427\U0001044F')
+        self.assertEqual('X\U00010427x\U0001044F'.capitalize(),
+                         'X\U0001044Fx\U0001044F')
+        self.assertEqual('h\u0130'.capitalize(), 'H\u0069\u0307')
+        exp = '\u0399\u0308\u0300\u0069\u0307'
+        self.assertEqual('\u1fd2\u0130'.capitalize(), exp)
+        self.assertEqual('�nnish'.capitalize(), 'Finnish')
+        self.assertEqual('A\u0345\u03a3'.capitalize(), 'A\u0345\u03c2')
+
+    def test_title(self):
+        super().test_title()
+        self.assertEqual('\U0001044F'.title(), '\U00010427')
+        self.assertEqual('\U0001044F\U0001044F'.title(),
+                         '\U00010427\U0001044F')
+        self.assertEqual('\U0001044F\U0001044F \U0001044F\U0001044F'.title(),
+                         '\U00010427\U0001044F \U00010427\U0001044F')
+        self.assertEqual('\U00010427\U0001044F \U00010427\U0001044F'.title(),
+                         '\U00010427\U0001044F \U00010427\U0001044F')
+        self.assertEqual('\U0001044F\U00010427 \U0001044F\U00010427'.title(),
+                         '\U00010427\U0001044F \U00010427\U0001044F')
+        self.assertEqual('X\U00010427x\U0001044F X\U00010427x\U0001044F'.title(),
+                         'X\U0001044Fx\U0001044F X\U0001044Fx\U0001044F')
+        self.assertEqual('�NNISH'.title(), 'Finnish')
+        self.assertEqual('A\u03a3 \u1fa1xy'.title(), 'A\u03c2 \u1fa9xy')
+        self.assertEqual('A\u03a3A'.title(), 'A\u03c3a')
+
+    def test_swapcase(self):
+        string_tests.StringLikeTest.test_swapcase(self)
+        self.assertEqual('\U0001044F'.swapcase(), '\U00010427')
+        self.assertEqual('\U00010427'.swapcase(), '\U0001044F')
+        self.assertEqual('\U0001044F\U0001044F'.swapcase(),
+                         '\U00010427\U00010427')
+        self.assertEqual('\U00010427\U0001044F'.swapcase(),
+                         '\U0001044F\U00010427')
+        self.assertEqual('\U0001044F\U00010427'.swapcase(),
+                         '\U00010427\U0001044F')
+        self.assertEqual('X\U00010427x\U0001044F'.swapcase(),
+                         'x\U0001044FX\U00010427')
+        self.assertEqual('�'.swapcase(), 'FI')
+        self.assertEqual('\u0130'.swapcase(), '\u0069\u0307')
+        # Special case for GREEK CAPITAL LETTER SIGMA U+03A3
+        self.assertEqual('\u03a3'.swapcase(), '\u03c3')
+        self.assertEqual('\u0345\u03a3'.swapcase(), '\u0399\u03c3')
+        self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
+        self.assertEqual('A\u0345\u03a3a'.swapcase(), 'a\u0399\u03c3A')
+        self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
+        self.assertEqual('A\u03a3\u0345'.swapcase(), 'a\u03c2\u0399')
+        self.assertEqual('\u03a3\u0345 '.swapcase(), '\u03c3\u0399 ')
+        self.assertEqual('\u03a3'.swapcase(), '\u03c3')
+        self.assertEqual('ß'.swapcase(), 'SS')
+        self.assertEqual('\u1fd2'.swapcase(), '\u0399\u0308\u0300')
+
+    def test_center(self):
+        string_tests.StringLikeTest.test_center(self)
+        self.assertEqual('x'.center(2, '\U0010FFFF'),
+                         'x\U0010FFFF')
+        self.assertEqual('x'.center(3, '\U0010FFFF'),
+                         '\U0010FFFFx\U0010FFFF')
+        self.assertEqual('x'.center(4, '\U0010FFFF'),
+                         '\U0010FFFFx\U0010FFFF\U0010FFFF')
+
+    @unittest.skipUnless(sys.maxsize == 2**31 - 1, "requires 32-bit system")
+    @support.cpython_only
+    def test_case_operation_overflow(self):
+        # Issue #22643
+        size = 2**32//12 + 1
+        try:
+            s = "ü" * size
+        except MemoryError:
+            self.skipTest('no enough memory (%.0f MiB required)' % (size / 2**20))
+        try:
+            self.assertRaises(OverflowError, s.upper)
+        finally:
+            del s
+
+    def test_contains(self):
+        # Testing Unicode contains method
+        self.assertIn('a', 'abdb')
+        self.assertIn('a', 'bdab')
+        self.assertIn('a', 'bdaba')
+        self.assertIn('a', 'bdba')
+        self.assertNotIn('a', 'bdb')
+        self.assertIn('a', 'bdba')
+        self.assertIn('a', ('a',1,None))
+        self.assertIn('a', (1,None,'a'))
+        self.assertIn('a', ('a',1,None))
+        self.assertIn('a', (1,None,'a'))
+        self.assertNotIn('a', ('x',1,'y'))
+        self.assertNotIn('a', ('x',1,None))
+        self.assertNotIn('abcd', 'abcxxxx')
+        self.assertIn('ab', 'abcd')
+        self.assertIn('ab', 'abc')
+        self.assertIn('ab', (1,None,'ab'))
+        self.assertIn('', 'abc')
+        self.assertIn('', '')
+        self.assertIn('', 'abc')
+        self.assertNotIn('\0', 'abc')
+        self.assertIn('\0', '\0abc')
+        self.assertIn('\0', 'abc\0')
+        self.assertIn('a', '\0abc')
+        self.assertIn('asdf', 'asdf')
+        self.assertNotIn('asdf', 'asd')
+        self.assertNotIn('asdf', '')
+
+        self.assertRaises(TypeError, "abc".__contains__)
+        # test mixed kinds
+        for fill in ('a', '\u0100', '\U00010300'):
+            fill *= 9
+            for delim in ('c', '\u0102', '\U00010302'):
+                self.assertNotIn(delim, fill)
+                self.assertIn(delim, fill + delim)
+                self.assertNotIn(delim * 2, fill)
+                self.assertIn(delim * 2, fill + delim * 2)
+
+    def test_issue18183(self):
+        '\U00010000\U00100000'.lower()
+        '\U00010000\U00100000'.casefold()
+        '\U00010000\U00100000'.upper()
+        '\U00010000\U00100000'.capitalize()
+        '\U00010000\U00100000'.title()
+        '\U00010000\U00100000'.swapcase()
+        '\U00100000'.center(3, '\U00010000')
+        '\U00100000'.ljust(3, '\U00010000')
+        '\U00100000'.rjust(3, '\U00010000')
+
+    def test_format(self):
+        self.assertEqual(''.format(), '')
+        self.assertEqual('a'.format(), 'a')
+        self.assertEqual('ab'.format(), 'ab')
+        self.assertEqual('a{{'.format(), 'a{')
+        self.assertEqual('a}}'.format(), 'a}')
+        self.assertEqual('{{b'.format(), '{b')
+        self.assertEqual('}}b'.format(), '}b')
+        self.assertEqual('a{{b'.format(), 'a{b')
+
+        # examples from the PEP:
+        import datetime
+        self.assertEqual("My name is {0}".format('Fred'), "My name is Fred")
+        self.assertEqual("My name is {0[name]}".format(dict(name='Fred')),
+                         "My name is Fred")
+        self.assertEqual("My name is {0} :-{{}}".format('Fred'),
+                         "My name is Fred :-{}")
+
+        d = datetime.date(2007, 8, 18)
+        self.assertEqual("The year is {0.year}".format(d),
+                         "The year is 2007")
+
+        # classes we'll use for testing
+        class C:
+            def __init__(self, x=100):
+                self._x = x
+            def __format__(self, spec):
+                return spec
+
+        class D:
+            def __init__(self, x):
+                self.x = x
+            def __format__(self, spec):
+                return str(self.x)
+
+        # class with __str__, but no __format__
+        class E:
+            def __init__(self, x):
+                self.x = x
+            def __str__(self):
+                return 'E(' + self.x + ')'
+
+        # class with __repr__, but no __format__ or __str__
+        class F:
+            def __init__(self, x):
+                self.x = x
+            def __repr__(self):
+                return 'F(' + self.x + ')'
+
+        # class with __format__ that forwards to string, for some format_spec's
+        class G:
+            def __init__(self, x):
+                self.x = x
+            def __str__(self):
+                return "string is " + self.x
+            def __format__(self, format_spec):
+                if format_spec == 'd':
+                    return 'G(' + self.x + ')'
+                return object.__format__(self, format_spec)
+
+        class I(datetime.date):
+            def __format__(self, format_spec):
+                return self.strftime(format_spec)
+
+        class J(int):
+            def __format__(self, format_spec):
+                return int.__format__(self * 2, format_spec)
+
+        class M:
+            def __init__(self, x):
+                self.x = x
+            def __repr__(self):
+                return 'M(' + self.x + ')'
+            __str__ = None
+
+        class N:
+            def __init__(self, x):
+                self.x = x
+            def __repr__(self):
+                return 'N(' + self.x + ')'
+            __format__ = None
+
+        self.assertEqual(''.format(), '')
+        self.assertEqual('abc'.format(), 'abc')
+        self.assertEqual('{0}'.format('abc'), 'abc')
+        self.assertEqual('{0:}'.format('abc'), 'abc')
+#        self.assertEqual('{ 0 }'.format('abc'), 'abc')
+        self.assertEqual('X{0}'.format('abc'), 'Xabc')
+        self.assertEqual('{0}X'.format('abc'), 'abcX')
+        self.assertEqual('X{0}Y'.format('abc'), 'XabcY')
+        self.assertEqual('{1}'.format(1, 'abc'), 'abc')
+        self.assertEqual('X{1}'.format(1, 'abc'), 'Xabc')
+        self.assertEqual('{1}X'.format(1, 'abc'), 'abcX')
+        self.assertEqual('X{1}Y'.format(1, 'abc'), 'XabcY')
+        self.assertEqual('{0}'.format(-15), '-15')
+        self.assertEqual('{0}{1}'.format(-15, 'abc'), '-15abc')
+        self.assertEqual('{0}X{1}'.format(-15, 'abc'), '-15Xabc')
+        self.assertEqual('{{'.format(), '{')
+        self.assertEqual('}}'.format(), '}')
+        self.assertEqual('{{}}'.format(), '{}')
+        self.assertEqual('{{x}}'.format(), '{x}')
+        self.assertEqual('{{{0}}}'.format(123), '{123}')
+        self.assertEqual('{{{{0}}}}'.format(), '{{0}}')
+        self.assertEqual('}}{{'.format(), '}{')
+        self.assertEqual('}}x{{'.format(), '}x{')
+
+        # weird field names
+        self.assertEqual("{0[foo-bar]}".format({'foo-bar':'baz'}), 'baz')
+        self.assertEqual("{0[foo bar]}".format({'foo bar':'baz'}), 'baz')
+        self.assertEqual("{0[ ]}".format({' ':3}), '3')
+
+        self.assertEqual('{foo._x}'.format(foo=C(20)), '20')
+        self.assertEqual('{1}{0}'.format(D(10), D(20)), '2010')
+        self.assertEqual('{0._x.x}'.format(C(D('abc'))), 'abc')
+        self.assertEqual('{0[0]}'.format(['abc', 'def']), 'abc')
+        self.assertEqual('{0[1]}'.format(['abc', 'def']), 'def')
+        self.assertEqual('{0[1][0]}'.format(['abc', ['def']]), 'def')
+        self.assertEqual('{0[1][0].x}'.format(['abc', [D('def')]]), 'def')
+
+        # strings
+        self.assertEqual('{0:.3s}'.format('abc'), 'abc')
+        self.assertEqual('{0:.3s}'.format('ab'), 'ab')
+        self.assertEqual('{0:.3s}'.format('abcdef'), 'abc')
+        self.assertEqual('{0:.0s}'.format('abcdef'), '')
+        self.assertEqual('{0:3.3s}'.format('abc'), 'abc')
+        self.assertEqual('{0:2.3s}'.format('abc'), 'abc')
+        self.assertEqual('{0:2.2s}'.format('abc'), 'ab')
+        self.assertEqual('{0:3.2s}'.format('abc'), 'ab ')
+        self.assertEqual('{0:x<0s}'.format('result'), 'result')
+        self.assertEqual('{0:x<5s}'.format('result'), 'result')
+        self.assertEqual('{0:x<6s}'.format('result'), 'result')
+        self.assertEqual('{0:x<7s}'.format('result'), 'resultx')
+        self.assertEqual('{0:x<8s}'.format('result'), 'resultxx')
+        self.assertEqual('{0: <7s}'.format('result'), 'result ')
+        self.assertEqual('{0:<7s}'.format('result'), 'result ')
+        self.assertEqual('{0:>7s}'.format('result'), ' result')
+        self.assertEqual('{0:>8s}'.format('result'), '  result')
+        self.assertEqual('{0:^8s}'.format('result'), ' result ')
+        self.assertEqual('{0:^9s}'.format('result'), ' result  ')
+        self.assertEqual('{0:^10s}'.format('result'), '  result  ')
+        self.assertEqual('{0:8s}'.format('result'), 'result  ')
+        self.assertEqual('{0:0s}'.format('result'), 'result')
+        self.assertEqual('{0:08s}'.format('result'), 'result00')
+        self.assertEqual('{0:<08s}'.format('result'), 'result00')
+        self.assertEqual('{0:>08s}'.format('result'), '00result')
+        self.assertEqual('{0:^08s}'.format('result'), '0result0')
+        self.assertEqual('{0:10000}'.format('a'), 'a' + ' ' * 9999)
+        self.assertEqual('{0:10000}'.format(''), ' ' * 10000)
+        self.assertEqual('{0:10000000}'.format(''), ' ' * 10000000)
+
+        # issue 12546: use \x00 as a fill character
+        self.assertEqual('{0:\x00<6s}'.format('foo'), 'foo\x00\x00\x00')
+        self.assertEqual('{0:\x01<6s}'.format('foo'), 'foo\x01\x01\x01')
+        self.assertEqual('{0:\x00^6s}'.format('foo'), '\x00foo\x00\x00')
+        self.assertEqual('{0:^6s}'.format('foo'), ' foo  ')
+
+        self.assertEqual('{0:\x00<6}'.format(3), '3\x00\x00\x00\x00\x00')
+        self.assertEqual('{0:\x01<6}'.format(3), '3\x01\x01\x01\x01\x01')
+        self.assertEqual('{0:\x00^6}'.format(3), '\x00\x003\x00\x00\x00')
+        self.assertEqual('{0:<6}'.format(3), '3     ')
+
+        self.assertEqual('{0:\x00<6}'.format(3.14), '3.14\x00\x00')
+        self.assertEqual('{0:\x01<6}'.format(3.14), '3.14\x01\x01')
+        self.assertEqual('{0:\x00^6}'.format(3.14), '\x003.14\x00')
+        self.assertEqual('{0:^6}'.format(3.14), ' 3.14 ')
+
+        self.assertEqual('{0:\x00<12}'.format(3+2.0j), '(3+2j)\x00\x00\x00\x00\x00\x00')
+        self.assertEqual('{0:\x01<12}'.format(3+2.0j), '(3+2j)\x01\x01\x01\x01\x01\x01')
+        self.assertEqual('{0:\x00^12}'.format(3+2.0j), '\x00\x00\x00(3+2j)\x00\x00\x00')
+        self.assertEqual('{0:^12}'.format(3+2.0j), '   (3+2j)   ')
+
+        # format specifiers for user defined type
+        self.assertEqual('{0:abc}'.format(C()), 'abc')
+
+        # !r, !s and !a coercions
+        self.assertEqual('{0!s}'.format('Hello'), 'Hello')
+        self.assertEqual('{0!s:}'.format('Hello'), 'Hello')
+        self.assertEqual('{0!s:15}'.format('Hello'), 'Hello          ')
+        self.assertEqual('{0!s:15s}'.format('Hello'), 'Hello          ')
+        self.assertEqual('{0!r}'.format('Hello'), "'Hello'")
+        self.assertEqual('{0!r:}'.format('Hello'), "'Hello'")
+        self.assertEqual('{0!r}'.format(F('Hello')), 'F(Hello)')
+        self.assertEqual('{0!r}'.format('\u0378'), "'\\u0378'") # nonprintable
+        self.assertEqual('{0!r}'.format('\u0374'), "'\u0374'")  # printable
+        self.assertEqual('{0!r}'.format(F('\u0374')), 'F(\u0374)')
+        self.assertEqual('{0!a}'.format('Hello'), "'Hello'")
+        self.assertEqual('{0!a}'.format('\u0378'), "'\\u0378'") # nonprintable
+        self.assertEqual('{0!a}'.format('\u0374'), "'\\u0374'") # printable
+        self.assertEqual('{0!a:}'.format('Hello'), "'Hello'")
+        self.assertEqual('{0!a}'.format(F('Hello')), 'F(Hello)')
+        self.assertEqual('{0!a}'.format(F('\u0374')), 'F(\\u0374)')
+
+        # test fallback to object.__format__
+        self.assertEqual('{0}'.format({}), '{}')
+        self.assertEqual('{0}'.format([]), '[]')
+        self.assertEqual('{0}'.format([1]), '[1]')
+
+        self.assertEqual('{0:d}'.format(G('data')), 'G(data)')
+        self.assertEqual('{0!s}'.format(G('data')), 'string is data')
+
+        self.assertRaises(TypeError, '{0:^10}'.format, E('data'))
+        self.assertRaises(TypeError, '{0:^10s}'.format, E('data'))
+        self.assertRaises(TypeError, '{0:>15s}'.format, G('data'))
+
+        self.assertEqual("{0:date: %Y-%m-%d}".format(I(year=2007,
+                                                       month=8,
+                                                       day=27)),
+                         "date: 2007-08-27")
+
+        # test deriving from a builtin type and overriding __format__
+        self.assertEqual("{0}".format(J(10)), "20")
+
+
+        # string format specifiers
+        self.assertEqual('{0:}'.format('a'), 'a')
+
+        # computed format specifiers
+        self.assertEqual("{0:.{1}}".format('hello world', 5), 'hello')
+        self.assertEqual("{0:.{1}s}".format('hello world', 5), 'hello')
+        self.assertEqual("{0:.{precision}s}".format('hello world', precision=5), 'hello')
+        self.assertEqual("{0:{width}.{precision}s}".format('hello world', width=10, precision=5), 'hello     ')
+        self.assertEqual("{0:{width}.{precision}s}".format('hello world', width='10', precision='5'), 'hello     ')
+
+        # test various errors
+        self.assertRaises(ValueError, '{'.format)
+        self.assertRaises(ValueError, '}'.format)
+        self.assertRaises(ValueError, 'a{'.format)
+        self.assertRaises(ValueError, 'a}'.format)
+        self.assertRaises(ValueError, '{a'.format)
+        self.assertRaises(ValueError, '}a'.format)
+        self.assertRaises(IndexError, '{0}'.format)
+        self.assertRaises(IndexError, '{1}'.format, 'abc')
+        self.assertRaises(KeyError,   '{x}'.format)
+        self.assertRaises(ValueError, "}{".format)
+        self.assertRaises(ValueError, "abc{0:{}".format)
+        self.assertRaises(ValueError, "{0".format)
+        self.assertRaises(IndexError, "{0.}".format)
+        self.assertRaises(ValueError, "{0.}".format, 0)
+        self.assertRaises(ValueError, "{0[}".format)
+        self.assertRaises(ValueError, "{0[}".format, [])
+        self.assertRaises(KeyError,   "{0]}".format)
+        self.assertRaises(ValueError, "{0.[]}".format, 0)
+        self.assertRaises(ValueError, "{0..foo}".format, 0)
+        self.assertRaises(ValueError, "{0[0}".format, 0)
+        self.assertRaises(ValueError, "{0[0:foo}".format, 0)
+        self.assertRaises(KeyError,   "{c]}".format)
+        self.assertRaises(ValueError, "{{ {{{0}}".format, 0)
+        self.assertRaises(ValueError, "{0}}".format, 0)
+        self.assertRaises(KeyError,   "{foo}".format, bar=3)
+        self.assertRaises(ValueError, "{0!x}".format, 3)
+        self.assertRaises(ValueError, "{0!}".format, 0)
+        self.assertRaises(ValueError, "{0!rs}".format, 0)
+        self.assertRaises(ValueError, "{!}".format)
+        self.assertRaises(IndexError, "{:}".format)
+        self.assertRaises(IndexError, "{:s}".format)
+        self.assertRaises(IndexError, "{}".format)
+        big = "23098475029384702983476098230754973209482573"
+        self.assertRaises(ValueError, ("{" + big + "}").format)
+        self.assertRaises(ValueError, ("{[" + big + "]}").format, [0])
+
+        # test number formatter errors:
+        self.assertRaises(ValueError, '{0:x}'.format, 1j)
+        self.assertRaises(ValueError, '{0:x}'.format, 1.0)
+        self.assertRaises(ValueError, '{0:X}'.format, 1j)
+        self.assertRaises(ValueError, '{0:X}'.format, 1.0)
+        self.assertRaises(ValueError, '{0:o}'.format, 1j)
+        self.assertRaises(ValueError, '{0:o}'.format, 1.0)
+        self.assertRaises(ValueError, '{0:u}'.format, 1j)
+        self.assertRaises(ValueError, '{0:u}'.format, 1.0)
+        self.assertRaises(ValueError, '{0:i}'.format, 1j)
+        self.assertRaises(ValueError, '{0:i}'.format, 1.0)
+        self.assertRaises(ValueError, '{0:d}'.format, 1j)
+        self.assertRaises(ValueError, '{0:d}'.format, 1.0)
+
+        # issue 6089
+        self.assertRaises(ValueError, "{0[0]x}".format, [None])
+        self.assertRaises(ValueError, "{0[0](10)}".format, [None])
+
+        # can't have a replacement on the field name portion
+        self.assertRaises(TypeError, '{0[{1}]}'.format, 'abcdefg', 4)
+
+        # exceed maximum recursion depth
+        self.assertRaises(ValueError, "{0:{1:{2}}}".format, 'abc', 's', '')
+        self.assertRaises(ValueError, "{0:{1:{2:{3:{4:{5:{6}}}}}}}".format,
+                          0, 1, 2, 3, 4, 5, 6, 7)
+
+        # string format spec errors
+        sign_msg = "Sign not allowed in string format specifier"
+        self.assertRaisesRegex(ValueError, sign_msg, "{0:-s}".format, '')
+        self.assertRaisesRegex(ValueError, sign_msg, format, "", "-")
+        space_msg = "Space not allowed in string format specifier"
+        self.assertRaisesRegex(ValueError, space_msg, "{: }".format, '')
+        self.assertRaises(ValueError, "{0:=s}".format, '')
+
+        # Alternate formatting is not supported
+        self.assertRaises(ValueError, format, '', '#')
+        self.assertRaises(ValueError, format, '', '#20')
+
+        # Non-ASCII
+        self.assertEqual("{0:s}{1:s}".format("ABC", "\u0410\u0411\u0412"),
+                         'ABC\u0410\u0411\u0412')
+        self.assertEqual("{0:.3s}".format("ABC\u0410\u0411\u0412"),
+                         'ABC')
+        self.assertEqual("{0:.0s}".format("ABC\u0410\u0411\u0412"),
+                         '')
+
+        self.assertEqual("{[{}]}".format({"{}": 5}), "5")
+        self.assertEqual("{[{}]}".format({"{}" : "a"}), "a")
+        self.assertEqual("{[{]}".format({"{" : "a"}), "a")
+        self.assertEqual("{[}]}".format({"}" : "a"}), "a")
+        self.assertEqual("{[[]}".format({"[" : "a"}), "a")
+        self.assertEqual("{[!]}".format({"!" : "a"}), "a")
+        self.assertRaises(ValueError, "{a{}b}".format, 42)
+        self.assertRaises(ValueError, "{a{b}".format, 42)
+        self.assertRaises(ValueError, "{[}".format, 42)
+
+        self.assertEqual("0x{:0{:d}X}".format(0x0,16), "0x0000000000000000")
+
+        # Blocking fallback
+        m = M('data')
+        self.assertEqual("{!r}".format(m), 'M(data)')
+        self.assertRaises(TypeError, "{!s}".format, m)
+        self.assertRaises(TypeError, "{}".format, m)
+        n = N('data')
+        self.assertEqual("{!r}".format(n), 'N(data)')
+        self.assertEqual("{!s}".format(n), 'N(data)')
+        self.assertRaises(TypeError, "{}".format, n)
+
+    def test_format_map(self):
+        self.assertEqual(''.format_map({}), '')
+        self.assertEqual('a'.format_map({}), 'a')
+        self.assertEqual('ab'.format_map({}), 'ab')
+        self.assertEqual('a{{'.format_map({}), 'a{')
+        self.assertEqual('a}}'.format_map({}), 'a}')
+        self.assertEqual('{{b'.format_map({}), '{b')
+        self.assertEqual('}}b'.format_map({}), '}b')
+        self.assertEqual('a{{b'.format_map({}), 'a{b')
+
+        # using mappings
+        class Mapping(dict):
+            def __missing__(self, key):
+                return key
+        self.assertEqual('{hello}'.format_map(Mapping()), 'hello')
+        self.assertEqual('{a} {world}'.format_map(Mapping(a='hello')), 'hello world')
+
+        class InternalMapping:
+            def __init__(self):
+                self.mapping = {'a': 'hello'}
+            def __getitem__(self, key):
+                return self.mapping[key]
+        self.assertEqual('{a}'.format_map(InternalMapping()), 'hello')
+
+
+        class C:
+            def __init__(self, x=100):
+                self._x = x
+            def __format__(self, spec):
+                return spec
+        self.assertEqual('{foo._x}'.format_map({'foo': C(20)}), '20')
+
+        # test various errors
+        self.assertRaises(TypeError, ''.format_map)
+        self.assertRaises(TypeError, 'a'.format_map)
+
+        self.assertRaises(ValueError, '{'.format_map, {})
+        self.assertRaises(ValueError, '}'.format_map, {})
+        self.assertRaises(ValueError, 'a{'.format_map, {})
+        self.assertRaises(ValueError, 'a}'.format_map, {})
+        self.assertRaises(ValueError, '{a'.format_map, {})
+        self.assertRaises(ValueError, '}a'.format_map, {})
+
+        # issue #12579: can't supply positional params to format_map
+        self.assertRaises(ValueError, '{}'.format_map, {'a' : 2})
+        self.assertRaises(ValueError, '{}'.format_map, 'a')
+        self.assertRaises(ValueError, '{a} {}'.format_map, {"a" : 2, "b" : 1})
+
+        class BadMapping:
+            def __getitem__(self, key):
+                return 1/0
+        self.assertRaises(KeyError, '{a}'.format_map, {})
+        self.assertRaises(TypeError, '{a}'.format_map, [])
+        self.assertRaises(ZeroDivisionError, '{a}'.format_map, BadMapping())
+
+    def test_format_huge_precision(self):
+        format_string = ".{}f".format(sys.maxsize + 1)
+        with self.assertRaises(ValueError):
+            result = format(2.34, format_string)
+
+    def test_format_huge_width(self):
+        format_string = "{}f".format(sys.maxsize + 1)
+        with self.assertRaises(ValueError):
+            result = format(2.34, format_string)
+
+    def test_format_huge_item_number(self):
+        format_string = "{{{}:.6f}}".format(sys.maxsize + 1)
+        with self.assertRaises(ValueError):
+            result = format_string.format(2.34)
+
+    def test_format_auto_numbering(self):
+        class C:
+            def __init__(self, x=100):
+                self._x = x
+            def __format__(self, spec):
+                return spec
+
+        self.assertEqual('{}'.format(10), '10')
+        self.assertEqual('{:5}'.format('s'), 's    ')
+        self.assertEqual('{!r}'.format('s'), "'s'")
+        self.assertEqual('{._x}'.format(C(10)), '10')
+        self.assertEqual('{[1]}'.format([1, 2]), '2')
+        self.assertEqual('{[a]}'.format({'a':4, 'b':2}), '4')
+        self.assertEqual('a{}b{}c'.format(0, 1), 'a0b1c')
+
+        self.assertEqual('a{:{}}b'.format('x', '^10'), 'a    x     b')
+        self.assertEqual('a{:{}x}b'.format(20, '#'), 'a0x14b')
+
+        # can't mix and match numbering and auto-numbering
+        self.assertRaises(ValueError, '{}{1}'.format, 1, 2)
+        self.assertRaises(ValueError, '{1}{}'.format, 1, 2)
+        self.assertRaises(ValueError, '{:{1}}'.format, 1, 2)
+        self.assertRaises(ValueError, '{0:{}}'.format, 1, 2)
+
+        # can mix and match auto-numbering and named
+        self.assertEqual('{f}{}'.format(4, f='test'), 'test4')
+        self.assertEqual('{}{f}'.format(4, f='test'), '4test')
+        self.assertEqual('{:{f}}{g}{}'.format(1, 3, g='g', f=2), ' 1g3')
+        self.assertEqual('{f:{}}{}{g}'.format(2, 4, f=1, g='g'), ' 14g')
+
+    def test_formatting(self):
+        string_tests.StringLikeTest.test_formatting(self)
+        # Testing Unicode formatting strings...
+        self.assertEqual("%s, %s" % ("abc", "abc"), 'abc, abc')
+        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", 1, 2, 3), 'abc, abc, 1, 2.000000,  3.00')
+        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", 1, -2, 3), 'abc, abc, 1, -2.000000,  3.00')
+        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", -1, -2, 3.5), 'abc, abc, -1, -2.000000,  3.50')
+        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", -1, -2, 3.57), 'abc, abc, -1, -2.000000,  3.57')
+        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", -1, -2, 1003.57), 'abc, abc, -1, -2.000000, 1003.57')
+        self.assertEqual("%r, %r" % (b"abc", "abc"), "b'abc', 'abc'")
+        self.assertEqual("%r" % ("\u1234",), "'\u1234'")
+        self.assertEqual("%a" % ("\u1234",), "'\\u1234'")
+        self.assertEqual("%(x)s, %(y)s" % {'x':"abc", 'y':"def"}, 'abc, def')
+        self.assertEqual("%(x)s, %(\xfc)s" % {'x':"abc", '\xfc':"def"}, 'abc, def')
+
+        self.assertEqual('%c' % 0x1234, '\u1234')
+        self.assertEqual('%c' % 0x21483, '\U00021483')
+        self.assertRaises(OverflowError, "%c".__mod__, (0x110000,))
+        self.assertEqual('%c' % '\U00021483', '\U00021483')
+        self.assertRaises(TypeError, "%c".__mod__, "aa")
+        self.assertRaises(ValueError, "%.1\u1032f".__mod__, (1.0/3))
+        self.assertRaises(TypeError, "%i".__mod__, "aa")
+
+        # formatting jobs delegated from the string implementation:
+        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
+        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
+        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
+        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
+        self.assertEqual('...%(foo)s...' % {'foo':"abc",'def':123},  '...abc...')
+        self.assertEqual('...%(foo)s...' % {'foo':"abc",'def':123}, '...abc...')
+        self.assertEqual('...%s...%s...%s...%s...' % (1,2,3,"abc"), '...1...2...3...abc...')
+        self.assertEqual('...%%...%%s...%s...%s...%s...%s...' % (1,2,3,"abc"), '...%...%s...1...2...3...abc...')
+        self.assertEqual('...%s...' % "abc", '...abc...')
+        self.assertEqual('%*s' % (5,'abc',), '  abc')
+        self.assertEqual('%*s' % (-5,'abc',), 'abc  ')
+        self.assertEqual('%*.*s' % (5,2,'abc',), '   ab')
+        self.assertEqual('%*.*s' % (5,3,'abc',), '  abc')
+        self.assertEqual('%i %*.*s' % (10, 5,3,'abc',), '10   abc')
+        self.assertEqual('%i%s %*.*s' % (10, 3, 5, 3, 'abc',), '103   abc')
+        self.assertEqual('%c' % 'a', 'a')
+        class Wrapper:
+            def __str__(self):
+                return '\u1234'
+        self.assertEqual('%s' % Wrapper(), '\u1234')
+
+        # issue 3382
+        NAN = float('nan')
+        INF = float('inf')
+        self.assertEqual('%f' % NAN, 'nan')
+        self.assertEqual('%F' % NAN, 'NAN')
+        self.assertEqual('%f' % INF, 'inf')
+        self.assertEqual('%F' % INF, 'INF')
+
+        # PEP 393
+        self.assertEqual('%.1s' % "a\xe9\u20ac", 'a')
+        self.assertEqual('%.2s' % "a\xe9\u20ac", 'a\xe9')
+
+        #issue 19995
+        class PseudoInt:
+            def __init__(self, value):
+                self.value = int(value)
+            def __int__(self):
+                return self.value
+            def __index__(self):
+                return self.value
+        class PseudoFloat:
+            def __init__(self, value):
+                self.value = float(value)
+            def __int__(self):
+                return int(self.value)
+        pi = PseudoFloat(3.1415)
+        letter_m = PseudoInt(109)
+        self.assertEqual('%x' % 42, '2a')
+        self.assertEqual('%X' % 15, 'F')
+        self.assertEqual('%o' % 9, '11')
+        self.assertEqual('%c' % 109, 'm')
+        self.assertEqual('%x' % letter_m, '6d')
+        self.assertEqual('%X' % letter_m, '6D')
+        self.assertEqual('%o' % letter_m, '155')
+        self.assertEqual('%c' % letter_m, 'm')
+        self.assertRaisesRegex(TypeError, '%x format: an integer is required, not float', operator.mod, '%x', 3.14)
+        self.assertRaisesRegex(TypeError, '%X format: an integer is required, not float', operator.mod, '%X', 2.11)
+        self.assertRaisesRegex(TypeError, '%o format: an integer is required, not float', operator.mod, '%o', 1.79)
+        self.assertRaisesRegex(TypeError, '%x format: an integer is required, not PseudoFloat', operator.mod, '%x', pi)
+        self.assertRaisesRegex(TypeError, '%x format: an integer is required, not complex', operator.mod, '%x', 3j)
+        self.assertRaisesRegex(TypeError, '%X format: an integer is required, not complex', operator.mod, '%X', 2j)
+        self.assertRaisesRegex(TypeError, '%o format: an integer is required, not complex', operator.mod, '%o', 1j)
+        self.assertRaisesRegex(TypeError, '%u format: a real number is required, not complex', operator.mod, '%u', 3j)
+        self.assertRaisesRegex(TypeError, '%i format: a real number is required, not complex', operator.mod, '%i', 2j)
+        self.assertRaisesRegex(TypeError, '%d format: a real number is required, not complex', operator.mod, '%d', 1j)
+        self.assertRaisesRegex(TypeError, '%c requires int or char', operator.mod, '%c', pi)
+
+        class RaisingNumber:
+            def __int__(self):
+                raise RuntimeError('int')  # should not be `TypeError`
+            def __index__(self):
+                raise RuntimeError('index')  # should not be `TypeError`
+
+        rn = RaisingNumber()
+        self.assertRaisesRegex(RuntimeError, 'int', operator.mod, '%d', rn)
+        self.assertRaisesRegex(RuntimeError, 'int', operator.mod, '%i', rn)
+        self.assertRaisesRegex(RuntimeError, 'int', operator.mod, '%u', rn)
+        self.assertRaisesRegex(RuntimeError, 'index', operator.mod, '%x', rn)
+        self.assertRaisesRegex(RuntimeError, 'index', operator.mod, '%X', rn)
+        self.assertRaisesRegex(RuntimeError, 'index', operator.mod, '%o', rn)
+
+    def test_formatting_with_enum(self):
+        # issue18780
+        import enum
+        class Float(float, enum.Enum):
+            # a mixed-in type will use the name for %s etc.
+            PI = 3.1415926
+        class Int(enum.IntEnum):
+            # IntEnum uses the value and not the name for %s etc.
+            IDES = 15
+        class Str(enum.StrEnum):
+            # StrEnum uses the value and not the name for %s etc.
+            ABC = 'abc'
+        # Testing Unicode formatting strings...
+        self.assertEqual("%s, %s" % (Str.ABC, Str.ABC),
+                         'abc, abc')
+        self.assertEqual("%s, %s, %d, %i, %u, %f, %5.2f" %
+                        (Str.ABC, Str.ABC,
+                         Int.IDES, Int.IDES, Int.IDES,
+                         Float.PI, Float.PI),
+                         'abc, abc, 15, 15, 15, 3.141593,  3.14')
+
+        # formatting jobs delegated from the string implementation:
+        self.assertEqual('...%(foo)s...' % {'foo':Str.ABC},
+                         '...abc...')
+        self.assertEqual('...%(foo)r...' % {'foo':Int.IDES},
+                         '...<Int.IDES: 15>...')
+        self.assertEqual('...%(foo)s...' % {'foo':Int.IDES},
+                         '...15...')
+        self.assertEqual('...%(foo)i...' % {'foo':Int.IDES},
+                         '...15...')
+        self.assertEqual('...%(foo)d...' % {'foo':Int.IDES},
+                         '...15...')
+        self.assertEqual('...%(foo)u...' % {'foo':Int.IDES, 'def':Float.PI},
+                         '...15...')
+        self.assertEqual('...%(foo)f...' % {'foo':Float.PI,'def':123},
+                         '...3.141593...')
+
+    def test_formatting_huge_precision(self):
+        format_string = "%.{}f".format(sys.maxsize + 1)
+        with self.assertRaises(ValueError):
+            result = format_string % 2.34
+
+    def test_issue28598_strsubclass_rhs(self):
+        # A subclass of str with an __rmod__ method should be able to hook
+        # into the % operator
+        class SubclassedStr(str):
+            def __rmod__(self, other):
+                return 'Success, self.__rmod__({!r}) was called'.format(other)
+        self.assertEqual('lhs %% %r' % SubclassedStr('rhs'),
+                         "Success, self.__rmod__('lhs %% %r') was called")
+
+    @support.cpython_only
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    def test_formatting_huge_precision_c_limits(self):
+        format_string = "%.{}f".format(_testcapi.INT_MAX + 1)
+        with self.assertRaises(ValueError):
+            result = format_string % 2.34
+
+    def test_formatting_huge_width(self):
+        format_string = "%{}f".format(sys.maxsize + 1)
+        with self.assertRaises(ValueError):
+            result = format_string % 2.34
+
+    def test_startswith_endswith_errors(self):
+        for meth in ('foo'.startswith, 'foo'.endswith):
+            with self.assertRaises(TypeError) as cm:
+                meth(['f'])
+            exc = str(cm.exception)
+            self.assertIn('str', exc)
+            self.assertIn('tuple', exc)
+
+    @support.run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
+    def test_format_float(self):
+        # should not format with a comma, but always with C locale
+        self.assertEqual('1.0', '%.1f' % 1.0)
+
+    def test_constructor(self):
+        # unicode(obj) tests (this maps to PyObject_Unicode() at C level)
+
+        self.assertEqual(
+            str('unicode remains unicode'),
+            'unicode remains unicode'
+        )
+
+        for text in ('ascii', '\xe9', '\u20ac', '\U0010FFFF'):
+            subclass = StrSubclass(text)
+            self.assertEqual(str(subclass), text)
+            self.assertEqual(len(subclass), len(text))
+            if text == 'ascii':
+                self.assertEqual(subclass.encode('ascii'), b'ascii')
+                self.assertEqual(subclass.encode('utf-8'), b'ascii')
+
+        self.assertEqual(
+            str('strings are converted to unicode'),
+            'strings are converted to unicode'
+        )
+
+        class StringCompat:
+            def __init__(self, x):
+                self.x = x
+            def __str__(self):
+                return self.x
+
+        self.assertEqual(
+            str(StringCompat('__str__ compatible objects are recognized')),
+            '__str__ compatible objects are recognized'
+        )
+
+        # unicode(obj) is compatible to str():
+
+        o = StringCompat('unicode(obj) is compatible to str()')
+        self.assertEqual(str(o), 'unicode(obj) is compatible to str()')
+        self.assertEqual(str(o), 'unicode(obj) is compatible to str()')
+
+        for obj in (123, 123.45, 123):
+            self.assertEqual(str(obj), str(str(obj)))
+
+        # unicode(obj, encoding, error) tests (this maps to
+        # PyUnicode_FromEncodedObject() at C level)
+
+        self.assertRaises(
+            TypeError,
+            str,
+            'decoding unicode is not supported',
+            'utf-8',
+            'strict'
+        )
+
+        self.assertEqual(
+            str(b'strings are decoded to unicode', 'utf-8', 'strict'),
+            'strings are decoded to unicode'
+        )
+
+        self.assertEqual(
+            str(
+                memoryview(b'character buffers are decoded to unicode'),
+                'utf-8',
+                'strict'
+            ),
+            'character buffers are decoded to unicode'
+        )
+
+        self.assertRaises(TypeError, str, 42, 42, 42)
+
+    def test_constructor_keyword_args(self):
+        """Pass various keyword argument combinations to the constructor."""
+        # The object argument can be passed as a keyword.
+        self.assertEqual(str(object='foo'), 'foo')
+        self.assertEqual(str(object=b'foo', encoding='utf-8'), 'foo')
+        # The errors argument without encoding triggers "decode" mode.
+        self.assertEqual(str(b'foo', errors='strict'), 'foo')  # not "b'foo'"
+        self.assertEqual(str(object=b'foo', errors='strict'), 'foo')
+
+    def test_constructor_defaults(self):
+        """Check the constructor argument defaults."""
+        # The object argument defaults to '' or b''.
+        self.assertEqual(str(), '')
+        self.assertEqual(str(errors='strict'), '')
+        utf8_cent = '¢'.encode('utf-8')
+        # The encoding argument defaults to utf-8.
+        self.assertEqual(str(utf8_cent, errors='strict'), '¢')
+        # The errors argument defaults to strict.
+        self.assertRaises(UnicodeDecodeError, str, utf8_cent, encoding='ascii')
+
+    def test_codecs_utf7(self):
+        utfTests = [
+            ('A\u2262\u0391.', b'A+ImIDkQ.'),             # RFC2152 example
+            ('Hi Mom -\u263a-!', b'Hi Mom -+Jjo--!'),     # RFC2152 example
+            ('\u65E5\u672C\u8A9E', b'+ZeVnLIqe-'),        # RFC2152 example
+            ('Item 3 is \u00a31.', b'Item 3 is +AKM-1.'), # RFC2152 example
+            ('+', b'+-'),
+            ('+-', b'+--'),
+            ('+?', b'+-?'),
+            (r'\?', b'+AFw?'),
+            ('+?', b'+-?'),
+            (r'\\?', b'+AFwAXA?'),
+            (r'\\\?', b'+AFwAXABc?'),
+            (r'++--', b'+-+---'),
+            ('\U000abcde', b'+2m/c3g-'),                  # surrogate pairs
+            ('/', b'/'),
+        ]
+
+        for (x, y) in utfTests:
+            self.assertEqual(x.encode('utf-7'), y)
+
+        # Unpaired surrogates are passed through
+        self.assertEqual('\uD801'.encode('utf-7'), b'+2AE-')
+        self.assertEqual('\uD801x'.encode('utf-7'), b'+2AE-x')
+        self.assertEqual('\uDC01'.encode('utf-7'), b'+3AE-')
+        self.assertEqual('\uDC01x'.encode('utf-7'), b'+3AE-x')
+        self.assertEqual(b'+2AE-'.decode('utf-7'), '\uD801')
+        self.assertEqual(b'+2AE-x'.decode('utf-7'), '\uD801x')
+        self.assertEqual(b'+3AE-'.decode('utf-7'), '\uDC01')
+        self.assertEqual(b'+3AE-x'.decode('utf-7'), '\uDC01x')
+
+        self.assertEqual('\uD801\U000abcde'.encode('utf-7'), b'+2AHab9ze-')
+        self.assertEqual(b'+2AHab9ze-'.decode('utf-7'), '\uD801\U000abcde')
+
+        # Issue #2242: crash on some Windows/MSVC versions
+        self.assertEqual(b'+\xc1'.decode('utf-7', 'ignore'), '')
+
+        # Direct encoded characters
+        set_d = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'(),-./:?"
+        # Optional direct characters
+        set_o = '!"#$%&*;<=>@[]^_`{|}'
+        for c in set_d:
+            self.assertEqual(c.encode('utf7'), c.encode('ascii'))
+            self.assertEqual(c.encode('ascii').decode('utf7'), c)
+        for c in set_o:
+            self.assertEqual(c.encode('ascii').decode('utf7'), c)
+
+        with self.assertRaisesRegex(UnicodeDecodeError,
+                                    'ill-formed sequence'):
+            b'+@'.decode('utf-7')
+
+    def test_codecs_utf8(self):
+        self.assertEqual(''.encode('utf-8'), b'')
+        self.assertEqual('\u20ac'.encode('utf-8'), b'\xe2\x82\xac')
+        self.assertEqual('\U00010002'.encode('utf-8'), b'\xf0\x90\x80\x82')
+        self.assertEqual('\U00023456'.encode('utf-8'), b'\xf0\xa3\x91\x96')
+        self.assertEqual('\ud800'.encode('utf-8', 'surrogatepass'), b'\xed\xa0\x80')
+        self.assertEqual('\udc00'.encode('utf-8', 'surrogatepass'), b'\xed\xb0\x80')
+        self.assertEqual(('\U00010002'*10).encode('utf-8'),
+                         b'\xf0\x90\x80\x82'*10)
+        self.assertEqual(
+            '\u6b63\u78ba\u306b\u8a00\u3046\u3068\u7ffb\u8a33\u306f'
+            '\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4e00'
+            '\u90e8\u306f\u30c9\u30a4\u30c4\u8a9e\u3067\u3059\u304c'
+            '\u3001\u3042\u3068\u306f\u3067\u305f\u3089\u3081\u3067'
+            '\u3059\u3002\u5b9f\u969b\u306b\u306f\u300cWenn ist das'
+            ' Nunstuck git und'.encode('utf-8'),
+            b'\xe6\xad\xa3\xe7\xa2\xba\xe3\x81\xab\xe8\xa8\x80\xe3\x81'
+            b'\x86\xe3\x81\xa8\xe7\xbf\xbb\xe8\xa8\xb3\xe3\x81\xaf\xe3'
+            b'\x81\x95\xe3\x82\x8c\xe3\x81\xa6\xe3\x81\x84\xe3\x81\xbe'
+            b'\xe3\x81\x9b\xe3\x82\x93\xe3\x80\x82\xe4\xb8\x80\xe9\x83'
+            b'\xa8\xe3\x81\xaf\xe3\x83\x89\xe3\x82\xa4\xe3\x83\x84\xe8'
+            b'\xaa\x9e\xe3\x81\xa7\xe3\x81\x99\xe3\x81\x8c\xe3\x80\x81'
+            b'\xe3\x81\x82\xe3\x81\xa8\xe3\x81\xaf\xe3\x81\xa7\xe3\x81'
+            b'\x9f\xe3\x82\x89\xe3\x82\x81\xe3\x81\xa7\xe3\x81\x99\xe3'
+            b'\x80\x82\xe5\xae\x9f\xe9\x9a\x9b\xe3\x81\xab\xe3\x81\xaf'
+            b'\xe3\x80\x8cWenn ist das Nunstuck git und'
+        )
+
+        # UTF-8 specific decoding tests
+        self.assertEqual(str(b'\xf0\xa3\x91\x96', 'utf-8'), '\U00023456' )
+        self.assertEqual(str(b'\xf0\x90\x80\x82', 'utf-8'), '\U00010002' )
+        self.assertEqual(str(b'\xe2\x82\xac', 'utf-8'), '\u20ac' )
+
+        # Other possible utf-8 test cases:
+        # * strict decoding testing for all of the
+        #   UTF8_ERROR cases in PyUnicode_DecodeUTF8
+
+    def test_utf8_decode_valid_sequences(self):
+        sequences = [
+            # single byte
+            (b'\x00', '\x00'), (b'a', 'a'), (b'\x7f', '\x7f'),
+            # 2 bytes
+            (b'\xc2\x80', '\x80'), (b'\xdf\xbf', '\u07ff'),
+            # 3 bytes
+            (b'\xe0\xa0\x80', '\u0800'), (b'\xed\x9f\xbf', '\ud7ff'),
+            (b'\xee\x80\x80', '\uE000'), (b'\xef\xbf\xbf', '\uffff'),
+            # 4 bytes
+            (b'\xF0\x90\x80\x80', '\U00010000'),
+            (b'\xf4\x8f\xbf\xbf', '\U0010FFFF')
+        ]
+        for seq, res in sequences:
+            self.assertEqual(seq.decode('utf-8'), res)
+
+
+    def test_utf8_decode_invalid_sequences(self):
+        # continuation bytes in a sequence of 2, 3, or 4 bytes
+        continuation_bytes = [bytes([x]) for x in range(0x80, 0xC0)]
+        # start bytes of a 2-byte sequence equivalent to code points < 0x7F
+        invalid_2B_seq_start_bytes = [bytes([x]) for x in range(0xC0, 0xC2)]
+        # start bytes of a 4-byte sequence equivalent to code points > 0x10FFFF
+        invalid_4B_seq_start_bytes = [bytes([x]) for x in range(0xF5, 0xF8)]
+        invalid_start_bytes = (
+            continuation_bytes + invalid_2B_seq_start_bytes +
+            invalid_4B_seq_start_bytes + [bytes([x]) for x in range(0xF7, 0x100)]
+        )
+
+        for byte in invalid_start_bytes:
+            self.assertRaises(UnicodeDecodeError, byte.decode, 'utf-8')
+
+        for sb in invalid_2B_seq_start_bytes:
+            for cb in continuation_bytes:
+                self.assertRaises(UnicodeDecodeError, (sb+cb).decode, 'utf-8')
+
+        for sb in invalid_4B_seq_start_bytes:
+            for cb1 in continuation_bytes[:3]:
+                for cb3 in continuation_bytes[:3]:
+                    self.assertRaises(UnicodeDecodeError,
+                                      (sb+cb1+b'\x80'+cb3).decode, 'utf-8')
+
+        for cb in [bytes([x]) for x in range(0x80, 0xA0)]:
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xE0'+cb+b'\x80').decode, 'utf-8')
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xE0'+cb+b'\xBF').decode, 'utf-8')
+        # surrogates
+        for cb in [bytes([x]) for x in range(0xA0, 0xC0)]:
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xED'+cb+b'\x80').decode, 'utf-8')
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xED'+cb+b'\xBF').decode, 'utf-8')
+        for cb in [bytes([x]) for x in range(0x80, 0x90)]:
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xF0'+cb+b'\x80\x80').decode, 'utf-8')
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xF0'+cb+b'\xBF\xBF').decode, 'utf-8')
+        for cb in [bytes([x]) for x in range(0x90, 0xC0)]:
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xF4'+cb+b'\x80\x80').decode, 'utf-8')
+            self.assertRaises(UnicodeDecodeError,
+                              (b'\xF4'+cb+b'\xBF\xBF').decode, 'utf-8')
+
+    def test_issue8271(self):
+        # Issue #8271: during the decoding of an invalid UTF-8 byte sequence,
+        # only the start byte and the continuation byte(s) are now considered
+        # invalid, instead of the number of bytes specified by the start byte.
+        # See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf (page 95,
+        # table 3-8, Row 2) for more information about the algorithm used.
+        FFFD = '\ufffd'
+        sequences = [
+            # invalid start bytes
+            (b'\x80', FFFD), # continuation byte
+            (b'\x80\x80', FFFD*2), # 2 continuation bytes
+            (b'\xc0', FFFD),
+            (b'\xc0\xc0', FFFD*2),
+            (b'\xc1', FFFD),
+            (b'\xc1\xc0', FFFD*2),
+            (b'\xc0\xc1', FFFD*2),
+            # with start byte of a 2-byte sequence
+            (b'\xc2', FFFD), # only the start byte
+            (b'\xc2\xc2', FFFD*2), # 2 start bytes
+            (b'\xc2\xc2\xc2', FFFD*3), # 3 start bytes
+            (b'\xc2\x41', FFFD+'A'), # invalid continuation byte
+            # with start byte of a 3-byte sequence
+            (b'\xe1', FFFD), # only the start byte
+            (b'\xe1\xe1', FFFD*2), # 2 start bytes
+            (b'\xe1\xe1\xe1', FFFD*3), # 3 start bytes
+            (b'\xe1\xe1\xe1\xe1', FFFD*4), # 4 start bytes
+            (b'\xe1\x80', FFFD), # only 1 continuation byte
+            (b'\xe1\x41', FFFD+'A'), # invalid continuation byte
+            (b'\xe1\x41\x80', FFFD+'A'+FFFD), # invalid cb followed by valid cb
+            (b'\xe1\x41\x41', FFFD+'AA'), # 2 invalid continuation bytes
+            (b'\xe1\x80\x41', FFFD+'A'), # only 1 valid continuation byte
+            (b'\xe1\x80\xe1\x41', FFFD*2+'A'), # 1 valid and the other invalid
+            (b'\xe1\x41\xe1\x80', FFFD+'A'+FFFD), # 1 invalid and the other valid
+            # with start byte of a 4-byte sequence
+            (b'\xf1', FFFD), # only the start byte
+            (b'\xf1\xf1', FFFD*2), # 2 start bytes
+            (b'\xf1\xf1\xf1', FFFD*3), # 3 start bytes
+            (b'\xf1\xf1\xf1\xf1', FFFD*4), # 4 start bytes
+            (b'\xf1\xf1\xf1\xf1\xf1', FFFD*5), # 5 start bytes
+            (b'\xf1\x80', FFFD), # only 1 continuation bytes
+            (b'\xf1\x80\x80', FFFD), # only 2 continuation bytes
+            (b'\xf1\x80\x41', FFFD+'A'), # 1 valid cb and 1 invalid
+            (b'\xf1\x80\x41\x41', FFFD+'AA'), # 1 valid cb and 1 invalid
+            (b'\xf1\x80\x80\x41', FFFD+'A'), # 2 valid cb and 1 invalid
+            (b'\xf1\x41\x80', FFFD+'A'+FFFD), # 1 invalid cv and 1 valid
+            (b'\xf1\x41\x80\x80', FFFD+'A'+FFFD*2), # 1 invalid cb and 2 invalid
+            (b'\xf1\x41\x80\x41', FFFD+'A'+FFFD+'A'), # 2 invalid cb and 1 invalid
+            (b'\xf1\x41\x41\x80', FFFD+'AA'+FFFD), # 1 valid cb and 1 invalid
+            (b'\xf1\x41\xf1\x80', FFFD+'A'+FFFD),
+            (b'\xf1\x41\x80\xf1', FFFD+'A'+FFFD*2),
+            (b'\xf1\xf1\x80\x41', FFFD*2+'A'),
+            (b'\xf1\x41\xf1\xf1', FFFD+'A'+FFFD*2),
+            # with invalid start byte of a 4-byte sequence (rfc2279)
+            (b'\xf5', FFFD), # only the start byte
+            (b'\xf5\xf5', FFFD*2), # 2 start bytes
+            (b'\xf5\x80', FFFD*2), # only 1 continuation byte
+            (b'\xf5\x80\x80', FFFD*3), # only 2 continuation byte
+            (b'\xf5\x80\x80\x80', FFFD*4), # 3 continuation bytes
+            (b'\xf5\x80\x41', FFFD*2+'A'), #  1 valid cb and 1 invalid
+            (b'\xf5\x80\x41\xf5', FFFD*2+'A'+FFFD),
+            (b'\xf5\x41\x80\x80\x41', FFFD+'A'+FFFD*2+'A'),
+            # with invalid start byte of a 5-byte sequence (rfc2279)
+            (b'\xf8', FFFD), # only the start byte
+            (b'\xf8\xf8', FFFD*2), # 2 start bytes
+            (b'\xf8\x80', FFFD*2), # only one continuation byte
+            (b'\xf8\x80\x41', FFFD*2 + 'A'), # 1 valid cb and 1 invalid
+            (b'\xf8\x80\x80\x80\x80', FFFD*5), # invalid 5 bytes seq with 5 bytes
+            # with invalid start byte of a 6-byte sequence (rfc2279)
+            (b'\xfc', FFFD), # only the start byte
+            (b'\xfc\xfc', FFFD*2), # 2 start bytes
+            (b'\xfc\x80\x80', FFFD*3), # only 2 continuation bytes
+            (b'\xfc\x80\x80\x80\x80\x80', FFFD*6), # 6 continuation bytes
+            # invalid start byte
+            (b'\xfe', FFFD),
+            (b'\xfe\x80\x80', FFFD*3),
+            # other sequences
+            (b'\xf1\x80\x41\x42\x43', '\ufffd\x41\x42\x43'),
+            (b'\xf1\x80\xff\x42\x43', '\ufffd\ufffd\x42\x43'),
+            (b'\xf1\x80\xc2\x81\x43', '\ufffd\x81\x43'),
+            (b'\x61\xF1\x80\x80\xE1\x80\xC2\x62\x80\x63\x80\xBF\x64',
+             '\x61\uFFFD\uFFFD\uFFFD\x62\uFFFD\x63\uFFFD\uFFFD\x64'),
+        ]
+        for n, (seq, res) in enumerate(sequences):
+            self.assertRaises(UnicodeDecodeError, seq.decode, 'utf-8', 'strict')
+            self.assertEqual(seq.decode('utf-8', 'replace'), res)
+            self.assertEqual((seq+b'b').decode('utf-8', 'replace'), res+'b')
+            self.assertEqual(seq.decode('utf-8', 'ignore'),
+                             res.replace('\uFFFD', ''))
+
+    def assertCorrectUTF8Decoding(self, seq, res, err):
+        """
+        Check that an invalid UTF-8 sequence raises a UnicodeDecodeError when
+        'strict' is used, returns res when 'replace' is used, and that doesn't
+        return anything when 'ignore' is used.
+        """
+        with self.assertRaises(UnicodeDecodeError) as cm:
+            seq.decode('utf-8')
+        exc = cm.exception
+
+        self.assertIn(err, str(exc))
+        self.assertEqual(seq.decode('utf-8', 'replace'), res)
+        self.assertEqual((b'aaaa' + seq + b'bbbb').decode('utf-8', 'replace'),
+                         'aaaa' + res + 'bbbb')
+        res = res.replace('\ufffd', '')
+        self.assertEqual(seq.decode('utf-8', 'ignore'), res)
+        self.assertEqual((b'aaaa' + seq + b'bbbb').decode('utf-8', 'ignore'),
+                          'aaaa' + res + 'bbbb')
+
+    def test_invalid_start_byte(self):
+        """
+        Test that an 'invalid start byte' error is raised when the first byte
+        is not in the ASCII range or is not a valid start byte of a 2-, 3-, or
+        4-bytes sequence. The invalid start byte is replaced with a single
+        U+FFFD when errors='replace'.
+        E.g. <80> is a continuation byte and can appear only after a start byte.
+        """
+        FFFD = '\ufffd'
+        for byte in b'\x80\xA0\x9F\xBF\xC0\xC1\xF5\xFF':
+            self.assertCorrectUTF8Decoding(bytes([byte]), '\ufffd',
+                                           'invalid start byte')
+
+    def test_unexpected_end_of_data(self):
+        """
+        Test that an 'unexpected end of data' error is raised when the string
+        ends after a start byte of a 2-, 3-, or 4-bytes sequence without having
+        enough continuation bytes.  The incomplete sequence is replaced with a
+        single U+FFFD when errors='replace'.
+        E.g. in the sequence <F3 80 80>, F3 is the start byte of a 4-bytes
+        sequence, but it's followed by only 2 valid continuation bytes and the
+        last continuation bytes is missing.
+        Note: the continuation bytes must be all valid, if one of them is
+        invalid another error will be raised.
+        """
+        sequences = [
+            'C2', 'DF',
+            'E0 A0', 'E0 BF', 'E1 80', 'E1 BF', 'EC 80', 'EC BF',
+            'ED 80', 'ED 9F', 'EE 80', 'EE BF', 'EF 80', 'EF BF',
+            'F0 90', 'F0 BF', 'F0 90 80', 'F0 90 BF', 'F0 BF 80', 'F0 BF BF',
+            'F1 80', 'F1 BF', 'F1 80 80', 'F1 80 BF', 'F1 BF 80', 'F1 BF BF',
+            'F3 80', 'F3 BF', 'F3 80 80', 'F3 80 BF', 'F3 BF 80', 'F3 BF BF',
+            'F4 80', 'F4 8F', 'F4 80 80', 'F4 80 BF', 'F4 8F 80', 'F4 8F BF'
+        ]
+        FFFD = '\ufffd'
+        for seq in sequences:
+            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), '\ufffd',
+                                           'unexpected end of data')
+
+    def test_invalid_cb_for_2bytes_seq(self):
+        """
+        Test that an 'invalid continuation byte' error is raised when the
+        continuation byte of a 2-bytes sequence is invalid.  The start byte
+        is replaced by a single U+FFFD and the second byte is handled
+        separately when errors='replace'.
+        E.g. in the sequence <C2 41>, C2 is the start byte of a 2-bytes
+        sequence, but 41 is not a valid continuation byte because it's the
+        ASCII letter 'A'.
+        """
+        FFFD = '\ufffd'
+        FFFDx2 = FFFD * 2
+        sequences = [
+            ('C2 00', FFFD+'\x00'), ('C2 7F', FFFD+'\x7f'),
+            ('C2 C0', FFFDx2), ('C2 FF', FFFDx2),
+            ('DF 00', FFFD+'\x00'), ('DF 7F', FFFD+'\x7f'),
+            ('DF C0', FFFDx2), ('DF FF', FFFDx2),
+        ]
+        for seq, res in sequences:
+            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), res,
+                                           'invalid continuation byte')
+
+    def test_invalid_cb_for_3bytes_seq(self):
+        """
+        Test that an 'invalid continuation byte' error is raised when the
+        continuation byte(s) of a 3-bytes sequence are invalid.  When
+        errors='replace', if the first continuation byte is valid, the first
+        two bytes (start byte + 1st cb) are replaced by a single U+FFFD and the
+        third byte is handled separately, otherwise only the start byte is
+        replaced with a U+FFFD and the other continuation bytes are handled
+        separately.
+        E.g. in the sequence <E1 80 41>, E1 is the start byte of a 3-bytes
+        sequence, 80 is a valid continuation byte, but 41 is not a valid cb
+        because it's the ASCII letter 'A'.
+        Note: when the start byte is E0 or ED, the valid ranges for the first
+        continuation byte are limited to A0..BF and 80..9F respectively.
+        Python 2 used to consider all the bytes in range 80..BF valid when the
+        start byte was ED.  This is fixed in Python 3.
+        """
+        FFFD = '\ufffd'
+        FFFDx2 = FFFD * 2
+        sequences = [
+            ('E0 00', FFFD+'\x00'), ('E0 7F', FFFD+'\x7f'), ('E0 80', FFFDx2),
+            ('E0 9F', FFFDx2), ('E0 C0', FFFDx2), ('E0 FF', FFFDx2),
+            ('E0 A0 00', FFFD+'\x00'), ('E0 A0 7F', FFFD+'\x7f'),
+            ('E0 A0 C0', FFFDx2), ('E0 A0 FF', FFFDx2),
+            ('E0 BF 00', FFFD+'\x00'), ('E0 BF 7F', FFFD+'\x7f'),
+            ('E0 BF C0', FFFDx2), ('E0 BF FF', FFFDx2), ('E1 00', FFFD+'\x00'),
+            ('E1 7F', FFFD+'\x7f'), ('E1 C0', FFFDx2), ('E1 FF', FFFDx2),
+            ('E1 80 00', FFFD+'\x00'), ('E1 80 7F', FFFD+'\x7f'),
+            ('E1 80 C0', FFFDx2), ('E1 80 FF', FFFDx2),
+            ('E1 BF 00', FFFD+'\x00'), ('E1 BF 7F', FFFD+'\x7f'),
+            ('E1 BF C0', FFFDx2), ('E1 BF FF', FFFDx2), ('EC 00', FFFD+'\x00'),
+            ('EC 7F', FFFD+'\x7f'), ('EC C0', FFFDx2), ('EC FF', FFFDx2),
+            ('EC 80 00', FFFD+'\x00'), ('EC 80 7F', FFFD+'\x7f'),
+            ('EC 80 C0', FFFDx2), ('EC 80 FF', FFFDx2),
+            ('EC BF 00', FFFD+'\x00'), ('EC BF 7F', FFFD+'\x7f'),
+            ('EC BF C0', FFFDx2), ('EC BF FF', FFFDx2), ('ED 00', FFFD+'\x00'),
+            ('ED 7F', FFFD+'\x7f'),
+            ('ED A0', FFFDx2), ('ED BF', FFFDx2), # see note ^
+            ('ED C0', FFFDx2), ('ED FF', FFFDx2), ('ED 80 00', FFFD+'\x00'),
+            ('ED 80 7F', FFFD+'\x7f'), ('ED 80 C0', FFFDx2),
+            ('ED 80 FF', FFFDx2), ('ED 9F 00', FFFD+'\x00'),
+            ('ED 9F 7F', FFFD+'\x7f'), ('ED 9F C0', FFFDx2),
+            ('ED 9F FF', FFFDx2), ('EE 00', FFFD+'\x00'),
+            ('EE 7F', FFFD+'\x7f'), ('EE C0', FFFDx2), ('EE FF', FFFDx2),
+            ('EE 80 00', FFFD+'\x00'), ('EE 80 7F', FFFD+'\x7f'),
+            ('EE 80 C0', FFFDx2), ('EE 80 FF', FFFDx2),
+            ('EE BF 00', FFFD+'\x00'), ('EE BF 7F', FFFD+'\x7f'),
+            ('EE BF C0', FFFDx2), ('EE BF FF', FFFDx2), ('EF 00', FFFD+'\x00'),
+            ('EF 7F', FFFD+'\x7f'), ('EF C0', FFFDx2), ('EF FF', FFFDx2),
+            ('EF 80 00', FFFD+'\x00'), ('EF 80 7F', FFFD+'\x7f'),
+            ('EF 80 C0', FFFDx2), ('EF 80 FF', FFFDx2),
+            ('EF BF 00', FFFD+'\x00'), ('EF BF 7F', FFFD+'\x7f'),
+            ('EF BF C0', FFFDx2), ('EF BF FF', FFFDx2),
+        ]
+        for seq, res in sequences:
+            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), res,
+                                           'invalid continuation byte')
+
+    def test_invalid_cb_for_4bytes_seq(self):
+        """
+        Test that an 'invalid continuation byte' error is raised when the
+        continuation byte(s) of a 4-bytes sequence are invalid.  When
+        errors='replace',the start byte and all the following valid
+        continuation bytes are replaced with a single U+FFFD, and all the bytes
+        starting from the first invalid continuation bytes (included) are
+        handled separately.
+        E.g. in the sequence <E1 80 41>, E1 is the start byte of a 3-bytes
+        sequence, 80 is a valid continuation byte, but 41 is not a valid cb
+        because it's the ASCII letter 'A'.
+        Note: when the start byte is E0 or ED, the valid ranges for the first
+        continuation byte are limited to A0..BF and 80..9F respectively.
+        However, when the start byte is ED, Python 2 considers all the bytes
+        in range 80..BF valid.  This is fixed in Python 3.
+        """
+        FFFD = '\ufffd'
+        FFFDx2 = FFFD * 2
+        sequences = [
+            ('F0 00', FFFD+'\x00'), ('F0 7F', FFFD+'\x7f'), ('F0 80', FFFDx2),
+            ('F0 8F', FFFDx2), ('F0 C0', FFFDx2), ('F0 FF', FFFDx2),
+            ('F0 90 00', FFFD+'\x00'), ('F0 90 7F', FFFD+'\x7f'),
+            ('F0 90 C0', FFFDx2), ('F0 90 FF', FFFDx2),
+            ('F0 BF 00', FFFD+'\x00'), ('F0 BF 7F', FFFD+'\x7f'),
+            ('F0 BF C0', FFFDx2), ('F0 BF FF', FFFDx2),
+            ('F0 90 80 00', FFFD+'\x00'), ('F0 90 80 7F', FFFD+'\x7f'),
+            ('F0 90 80 C0', FFFDx2), ('F0 90 80 FF', FFFDx2),
+            ('F0 90 BF 00', FFFD+'\x00'), ('F0 90 BF 7F', FFFD+'\x7f'),
+            ('F0 90 BF C0', FFFDx2), ('F0 90 BF FF', FFFDx2),
+            ('F0 BF 80 00', FFFD+'\x00'), ('F0 BF 80 7F', FFFD+'\x7f'),
+            ('F0 BF 80 C0', FFFDx2), ('F0 BF 80 FF', FFFDx2),
+            ('F0 BF BF 00', FFFD+'\x00'), ('F0 BF BF 7F', FFFD+'\x7f'),
+            ('F0 BF BF C0', FFFDx2), ('F0 BF BF FF', FFFDx2),
+            ('F1 00', FFFD+'\x00'), ('F1 7F', FFFD+'\x7f'), ('F1 C0', FFFDx2),
+            ('F1 FF', FFFDx2), ('F1 80 00', FFFD+'\x00'),
+            ('F1 80 7F', FFFD+'\x7f'), ('F1 80 C0', FFFDx2),
+            ('F1 80 FF', FFFDx2), ('F1 BF 00', FFFD+'\x00'),
+            ('F1 BF 7F', FFFD+'\x7f'), ('F1 BF C0', FFFDx2),
+            ('F1 BF FF', FFFDx2), ('F1 80 80 00', FFFD+'\x00'),
+            ('F1 80 80 7F', FFFD+'\x7f'), ('F1 80 80 C0', FFFDx2),
+            ('F1 80 80 FF', FFFDx2), ('F1 80 BF 00', FFFD+'\x00'),
+            ('F1 80 BF 7F', FFFD+'\x7f'), ('F1 80 BF C0', FFFDx2),
+            ('F1 80 BF FF', FFFDx2), ('F1 BF 80 00', FFFD+'\x00'),
+            ('F1 BF 80 7F', FFFD+'\x7f'), ('F1 BF 80 C0', FFFDx2),
+            ('F1 BF 80 FF', FFFDx2), ('F1 BF BF 00', FFFD+'\x00'),
+            ('F1 BF BF 7F', FFFD+'\x7f'), ('F1 BF BF C0', FFFDx2),
+            ('F1 BF BF FF', FFFDx2), ('F3 00', FFFD+'\x00'),
+            ('F3 7F', FFFD+'\x7f'), ('F3 C0', FFFDx2), ('F3 FF', FFFDx2),
+            ('F3 80 00', FFFD+'\x00'), ('F3 80 7F', FFFD+'\x7f'),
+            ('F3 80 C0', FFFDx2), ('F3 80 FF', FFFDx2),
+            ('F3 BF 00', FFFD+'\x00'), ('F3 BF 7F', FFFD+'\x7f'),
+            ('F3 BF C0', FFFDx2), ('F3 BF FF', FFFDx2),
+            ('F3 80 80 00', FFFD+'\x00'), ('F3 80 80 7F', FFFD+'\x7f'),
+            ('F3 80 80 C0', FFFDx2), ('F3 80 80 FF', FFFDx2),
+            ('F3 80 BF 00', FFFD+'\x00'), ('F3 80 BF 7F', FFFD+'\x7f'),
+            ('F3 80 BF C0', FFFDx2), ('F3 80 BF FF', FFFDx2),
+            ('F3 BF 80 00', FFFD+'\x00'), ('F3 BF 80 7F', FFFD+'\x7f'),
+            ('F3 BF 80 C0', FFFDx2), ('F3 BF 80 FF', FFFDx2),
+            ('F3 BF BF 00', FFFD+'\x00'), ('F3 BF BF 7F', FFFD+'\x7f'),
+            ('F3 BF BF C0', FFFDx2), ('F3 BF BF FF', FFFDx2),
+            ('F4 00', FFFD+'\x00'), ('F4 7F', FFFD+'\x7f'), ('F4 90', FFFDx2),
+            ('F4 BF', FFFDx2), ('F4 C0', FFFDx2), ('F4 FF', FFFDx2),
+            ('F4 80 00', FFFD+'\x00'), ('F4 80 7F', FFFD+'\x7f'),
+            ('F4 80 C0', FFFDx2), ('F4 80 FF', FFFDx2),
+            ('F4 8F 00', FFFD+'\x00'), ('F4 8F 7F', FFFD+'\x7f'),
+            ('F4 8F C0', FFFDx2), ('F4 8F FF', FFFDx2),
+            ('F4 80 80 00', FFFD+'\x00'), ('F4 80 80 7F', FFFD+'\x7f'),
+            ('F4 80 80 C0', FFFDx2), ('F4 80 80 FF', FFFDx2),
+            ('F4 80 BF 00', FFFD+'\x00'), ('F4 80 BF 7F', FFFD+'\x7f'),
+            ('F4 80 BF C0', FFFDx2), ('F4 80 BF FF', FFFDx2),
+            ('F4 8F 80 00', FFFD+'\x00'), ('F4 8F 80 7F', FFFD+'\x7f'),
+            ('F4 8F 80 C0', FFFDx2), ('F4 8F 80 FF', FFFDx2),
+            ('F4 8F BF 00', FFFD+'\x00'), ('F4 8F BF 7F', FFFD+'\x7f'),
+            ('F4 8F BF C0', FFFDx2), ('F4 8F BF FF', FFFDx2)
+        ]
+        for seq, res in sequences:
+            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), res,
+                                           'invalid continuation byte')
+
+    def test_codecs_idna(self):
+        # Test whether trailing dot is preserved
+        self.assertEqual("www.python.org.".encode("idna"), b"www.python.org.")
+
+    def test_codecs_errors(self):
+        # Error handling (encoding)
+        self.assertRaises(UnicodeError, 'Andr\202 x'.encode, 'ascii')
+        self.assertRaises(UnicodeError, 'Andr\202 x'.encode, 'ascii','strict')
+        self.assertEqual('Andr\202 x'.encode('ascii','ignore'), b"Andr x")
+        self.assertEqual('Andr\202 x'.encode('ascii','replace'), b"Andr? x")
+        self.assertEqual('Andr\202 x'.encode('ascii', 'replace'),
+                         'Andr\202 x'.encode('ascii', errors='replace'))
+        self.assertEqual('Andr\202 x'.encode('ascii', 'ignore'),
+                         'Andr\202 x'.encode(encoding='ascii', errors='ignore'))
+
+        # Error handling (decoding)
+        self.assertRaises(UnicodeError, str, b'Andr\202 x', 'ascii')
+        self.assertRaises(UnicodeError, str, b'Andr\202 x', 'ascii', 'strict')
+        self.assertEqual(str(b'Andr\202 x', 'ascii', 'ignore'), "Andr x")
+        self.assertEqual(str(b'Andr\202 x', 'ascii', 'replace'), 'Andr\uFFFD x')
+        self.assertEqual(str(b'\202 x', 'ascii', 'replace'), '\uFFFD x')
+
+        # Error handling (unknown character names)
+        self.assertEqual(b"\\N{foo}xx".decode("unicode-escape", "ignore"), "xx")
+
+        # Error handling (truncated escape sequence)
+        self.assertRaises(UnicodeError, b"\\".decode, "unicode-escape")
+
+        self.assertRaises(TypeError, b"hello".decode, "test.unicode1")
+        self.assertRaises(TypeError, str, b"hello", "test.unicode2")
+        self.assertRaises(TypeError, "hello".encode, "test.unicode1")
+        self.assertRaises(TypeError, "hello".encode, "test.unicode2")
+
+        # Error handling (wrong arguments)
+        self.assertRaises(TypeError, "hello".encode, 42, 42, 42)
+
+        # Error handling (lone surrogate in
+        # _PyUnicode_TransformDecimalAndSpaceToASCII())
+        self.assertRaises(ValueError, int, "\ud800")
+        self.assertRaises(ValueError, int, "\udf00")
+        self.assertRaises(ValueError, float, "\ud800")
+        self.assertRaises(ValueError, float, "\udf00")
+        self.assertRaises(ValueError, complex, "\ud800")
+        self.assertRaises(ValueError, complex, "\udf00")
+
+    def test_codecs(self):
+        # Encoding
+        self.assertEqual('hello'.encode('ascii'), b'hello')
+        self.assertEqual('hello'.encode('utf-7'), b'hello')
+        self.assertEqual('hello'.encode('utf-8'), b'hello')
+        self.assertEqual('hello'.encode('utf-8'), b'hello')
+        self.assertEqual('hello'.encode('utf-16-le'), b'h\000e\000l\000l\000o\000')
+        self.assertEqual('hello'.encode('utf-16-be'), b'\000h\000e\000l\000l\000o')
+        self.assertEqual('hello'.encode('latin-1'), b'hello')
+
+        # Default encoding is utf-8
+        self.assertEqual('\u2603'.encode(), b'\xe2\x98\x83')
+
+        # Roundtrip safety for BMP (just the first 1024 chars)
+        for c in range(1024):
+            u = chr(c)
+            for encoding in ('utf-7', 'utf-8', 'utf-16', 'utf-16-le',
+                             'utf-16-be', 'raw_unicode_escape',
+                             'unicode_escape'):
+                self.assertEqual(str(u.encode(encoding),encoding), u)
+
+        # Roundtrip safety for BMP (just the first 256 chars)
+        for c in range(256):
+            u = chr(c)
+            for encoding in ('latin-1',):
+                self.assertEqual(str(u.encode(encoding),encoding), u)
+
+        # Roundtrip safety for BMP (just the first 128 chars)
+        for c in range(128):
+            u = chr(c)
+            for encoding in ('ascii',):
+                self.assertEqual(str(u.encode(encoding),encoding), u)
+
+        # Roundtrip safety for non-BMP (just a few chars)
+        with warnings.catch_warnings():
+            u = '\U00010001\U00020002\U00030003\U00040004\U00050005'
+            for encoding in ('utf-8', 'utf-16', 'utf-16-le', 'utf-16-be',
+                             'raw_unicode_escape', 'unicode_escape'):
+                self.assertEqual(str(u.encode(encoding),encoding), u)
+
+        # UTF-8 must be roundtrip safe for all code points
+        # (except surrogates, which are forbidden).
+        u = ''.join(map(chr, list(range(0, 0xd800)) +
+                             list(range(0xe000, 0x110000))))
+        for encoding in ('utf-8',):
+            self.assertEqual(str(u.encode(encoding),encoding), u)
+
+    def test_codecs_charmap(self):
+        # 0-127
+        s = bytes(range(128))
+        for encoding in (
+            'cp037', 'cp1026', 'cp273',
+            'cp437', 'cp500', 'cp720', 'cp737', 'cp775', 'cp850',
+            'cp852', 'cp855', 'cp858', 'cp860', 'cp861', 'cp862',
+            'cp863', 'cp865', 'cp866', 'cp1125',
+            'iso8859_10', 'iso8859_13', 'iso8859_14', 'iso8859_15',
+            'iso8859_2', 'iso8859_3', 'iso8859_4', 'iso8859_5', 'iso8859_6',
+            'iso8859_7', 'iso8859_9',
+            'koi8_r', 'koi8_t', 'koi8_u', 'kz1048', 'latin_1',
+            'mac_cyrillic', 'mac_latin2',
+
+            'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255',
+            'cp1256', 'cp1257', 'cp1258',
+            'cp856', 'cp857', 'cp864', 'cp869', 'cp874',
+
+            'mac_greek', 'mac_iceland','mac_roman', 'mac_turkish',
+            'cp1006', 'iso8859_8',
+
+            ### These have undefined mappings:
+            #'cp424',
+
+            ### These fail the round-trip:
+            #'cp875'
+
+            ):
+            self.assertEqual(str(s, encoding).encode(encoding), s)
+
+        # 128-255
+        s = bytes(range(128, 256))
+        for encoding in (
+            'cp037', 'cp1026', 'cp273',
+            'cp437', 'cp500', 'cp720', 'cp737', 'cp775', 'cp850',
+            'cp852', 'cp855', 'cp858', 'cp860', 'cp861', 'cp862',
+            'cp863', 'cp865', 'cp866', 'cp1125',
+            'iso8859_10', 'iso8859_13', 'iso8859_14', 'iso8859_15',
+            'iso8859_2', 'iso8859_4', 'iso8859_5',
+            'iso8859_9', 'koi8_r', 'koi8_u', 'latin_1',
+            'mac_cyrillic', 'mac_latin2',
+
+            ### These have undefined mappings:
+            #'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255',
+            #'cp1256', 'cp1257', 'cp1258',
+            #'cp424', 'cp856', 'cp857', 'cp864', 'cp869', 'cp874',
+            #'iso8859_3', 'iso8859_6', 'iso8859_7', 'koi8_t', 'kz1048',
+            #'mac_greek', 'mac_iceland','mac_roman', 'mac_turkish',
+
+            ### These fail the round-trip:
+            #'cp1006', 'cp875', 'iso8859_8',
+
+            ):
+            self.assertEqual(str(s, encoding).encode(encoding), s)
+
+    def test_concatenation(self):
+        self.assertEqual(("abc" "def"), "abcdef")
+        self.assertEqual(("abc" "def"), "abcdef")
+        self.assertEqual(("abc" "def"), "abcdef")
+        self.assertEqual(("abc" "def" "ghi"), "abcdefghi")
+        self.assertEqual(("abc" "def" "ghi"), "abcdefghi")
+
+    def test_ucs4(self):
+        x = '\U00100000'
+        y = x.encode("raw-unicode-escape").decode("raw-unicode-escape")
+        self.assertEqual(x, y)
+
+        y = br'\U00100000'
+        x = y.decode("raw-unicode-escape").encode("raw-unicode-escape")
+        self.assertEqual(x, y)
+        y = br'\U00010000'
+        x = y.decode("raw-unicode-escape").encode("raw-unicode-escape")
+        self.assertEqual(x, y)
+
+        try:
+            br'\U11111111'.decode("raw-unicode-escape")
+        except UnicodeDecodeError as e:
+            self.assertEqual(e.start, 0)
+            self.assertEqual(e.end, 10)
+        else:
+            self.fail("Should have raised UnicodeDecodeError")
+
+    def test_conversion(self):
+        # Make sure __str__() works properly
+        class StrWithStr(str):
+            def __new__(cls, value):
+                self = str.__new__(cls, "")
+                self.value = value
+                return self
+            def __str__(self):
+                return self.value
+
+        self.assertTypedEqual(str(WithStr('abc')), 'abc')
+        self.assertTypedEqual(str(WithStr(StrSubclass('abc'))), StrSubclass('abc'))
+        self.assertTypedEqual(StrSubclass(WithStr('abc')), StrSubclass('abc'))
+        self.assertTypedEqual(StrSubclass(WithStr(StrSubclass('abc'))),
+                              StrSubclass('abc'))
+        self.assertTypedEqual(StrSubclass(WithStr(OtherStrSubclass('abc'))),
+                              StrSubclass('abc'))
+
+        self.assertTypedEqual(str(StrWithStr('abc')), 'abc')
+        self.assertTypedEqual(str(StrWithStr(StrSubclass('abc'))), StrSubclass('abc'))
+        self.assertTypedEqual(StrSubclass(StrWithStr('abc')), StrSubclass('abc'))
+        self.assertTypedEqual(StrSubclass(StrWithStr(StrSubclass('abc'))),
+                              StrSubclass('abc'))
+        self.assertTypedEqual(StrSubclass(StrWithStr(OtherStrSubclass('abc'))),
+                              StrSubclass('abc'))
+
+        self.assertTypedEqual(str(WithRepr('<abc>')), '<abc>')
+        self.assertTypedEqual(str(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
+        self.assertTypedEqual(StrSubclass(WithRepr('<abc>')), StrSubclass('<abc>'))
+        self.assertTypedEqual(StrSubclass(WithRepr(StrSubclass('<abc>'))),
+                              StrSubclass('<abc>'))
+        self.assertTypedEqual(StrSubclass(WithRepr(OtherStrSubclass('<abc>'))),
+                              StrSubclass('<abc>'))
+
+    def test_unicode_repr(self):
+        class s1:
+            def __repr__(self):
+                return '\\n'
+
+        self.assertEqual(repr(s1()), '\\n')
+
+    def test_printable_repr(self):
+        self.assertEqual(repr('\U00010000'), "'%c'" % (0x10000,)) # printable
+        self.assertEqual(repr('\U00014000'), "'\\U00014000'")     # nonprintable
+
+    # This test only affects 32-bit platforms because expandtabs can only take
+    # an int as the max value, not a 64-bit C long.  If expandtabs is changed
+    # to take a 64-bit long, this test should apply to all platforms.
+    @unittest.skipIf(sys.maxsize > (1 << 32) or struct.calcsize('P') != 4,
+                     'only applies to 32-bit platforms')
+    def test_expandtabs_overflows_gracefully(self):
+        self.assertRaises(OverflowError, 't\tt\t'.expandtabs, sys.maxsize)
+
+    @support.cpython_only
+    def test_expandtabs_optimization(self):
+        s = 'abc'
+        self.assertIs(s.expandtabs(), s)
+
+    def test_raiseMemError(self):
+        asciifields = "nnb"
+        compactfields = asciifields + "nP"
+        ascii_struct_size = support.calcobjsize(asciifields)
+        compact_struct_size = support.calcobjsize(compactfields)
+
+        for char in ('a', '\xe9', '\u20ac', '\U0010ffff'):
+            code = ord(char)
+            if code < 0x80:
+                char_size = 1  # sizeof(Py_UCS1)
+                struct_size = ascii_struct_size
+            elif code < 0x100:
+                char_size = 1  # sizeof(Py_UCS1)
+                struct_size = compact_struct_size
+            elif code < 0x10000:
+                char_size = 2  # sizeof(Py_UCS2)
+                struct_size = compact_struct_size
+            else:
+                char_size = 4  # sizeof(Py_UCS4)
+                struct_size = compact_struct_size
+            # Note: sys.maxsize is half of the actual max allocation because of
+            # the signedness of Py_ssize_t. Strings of maxlen-1 should in principle
+            # be allocatable, given enough memory.
+            maxlen = ((sys.maxsize - struct_size) // char_size)
+            alloc = lambda: char * maxlen
+            with self.subTest(
+                char=char,
+                struct_size=struct_size,
+                char_size=char_size
+            ):
+                # self-check
+                self.assertEqual(
+                    sys.getsizeof(char * 42),
+                    struct_size + (char_size * (42 + 1))
+                )
+                self.assertRaises(MemoryError, alloc)
+                self.assertRaises(MemoryError, alloc)
+
+    def test_format_subclass(self):
+        class S(str):
+            def __str__(self):
+                return '__str__ overridden'
+        s = S('xxx')
+        self.assertEqual("%s" % s, '__str__ overridden')
+        self.assertEqual("{}".format(s), '__str__ overridden')
+
+    def test_subclass_add(self):
+        class S(str):
+            def __add__(self, o):
+                return "3"
+        self.assertEqual(S("4") + S("5"), "3")
+        class S(str):
+            def __iadd__(self, o):
+                return "3"
+        s = S("1")
+        s += "4"
+        self.assertEqual(s, "3")
+
+    def test_getnewargs(self):
+        text = 'abc'
+        args = text.__getnewargs__()
+        self.assertIsNot(args[0], text)
+        self.assertEqual(args[0], text)
+        self.assertEqual(len(args), 1)
+
+    def test_compare(self):
+        # Issue #17615
+        N = 10
+        ascii = 'a' * N
+        ascii2 = 'z' * N
+        latin = '\x80' * N
+        latin2 = '\xff' * N
+        bmp = '\u0100' * N
+        bmp2 = '\uffff' * N
+        astral = '\U00100000' * N
+        astral2 = '\U0010ffff' * N
+        strings = (
+            ascii, ascii2,
+            latin, latin2,
+            bmp, bmp2,
+            astral, astral2)
+        for text1, text2 in itertools.combinations(strings, 2):
+            equal = (text1 is text2)
+            self.assertEqual(text1 == text2, equal)
+            self.assertEqual(text1 != text2, not equal)
+
+            if equal:
+                self.assertTrue(text1 <= text2)
+                self.assertTrue(text1 >= text2)
+
+                # text1 is text2: duplicate strings to skip the "str1 == str2"
+                # optimization in unicode_compare_eq() and really compare
+                # character per character
+                copy1 = duplicate_string(text1)
+                copy2 = duplicate_string(text2)
+                self.assertIsNot(copy1, copy2)
+
+                self.assertTrue(copy1 == copy2)
+                self.assertFalse(copy1 != copy2)
+
+                self.assertTrue(copy1 <= copy2)
+                self.assertTrue(copy2 >= copy2)
+
+        self.assertTrue(ascii < ascii2)
+        self.assertTrue(ascii < latin)
+        self.assertTrue(ascii < bmp)
+        self.assertTrue(ascii < astral)
+        self.assertFalse(ascii >= ascii2)
+        self.assertFalse(ascii >= latin)
+        self.assertFalse(ascii >= bmp)
+        self.assertFalse(ascii >= astral)
+
+        self.assertFalse(latin < ascii)
+        self.assertTrue(latin < latin2)
+        self.assertTrue(latin < bmp)
+        self.assertTrue(latin < astral)
+        self.assertTrue(latin >= ascii)
+        self.assertFalse(latin >= latin2)
+        self.assertFalse(latin >= bmp)
+        self.assertFalse(latin >= astral)
+
+        self.assertFalse(bmp < ascii)
+        self.assertFalse(bmp < latin)
+        self.assertTrue(bmp < bmp2)
+        self.assertTrue(bmp < astral)
+        self.assertTrue(bmp >= ascii)
+        self.assertTrue(bmp >= latin)
+        self.assertFalse(bmp >= bmp2)
+        self.assertFalse(bmp >= astral)
+
+        self.assertFalse(astral < ascii)
+        self.assertFalse(astral < latin)
+        self.assertFalse(astral < bmp2)
+        self.assertTrue(astral < astral2)
+        self.assertTrue(astral >= ascii)
+        self.assertTrue(astral >= latin)
+        self.assertTrue(astral >= bmp2)
+        self.assertFalse(astral >= astral2)
+
+    def test_free_after_iterating(self):
+        support.check_free_after_iterating(self, iter, str)
+        support.check_free_after_iterating(self, reversed, str)
+
+    def test_check_encoding_errors(self):
+        # bpo-37388: str(bytes) and str.decode() must check encoding and errors
+        # arguments in dev mode
+        encodings = ('ascii', 'utf8', 'latin1')
+        invalid = 'Boom, Shaka Laka, Boom!'
+        code = textwrap.dedent(f'''
+            import sys
+            encodings = {encodings!r}
+
+            for data in (b'', b'short string'):
+                try:
+                    str(data, encoding={invalid!r})
+                except LookupError:
+                    pass
+                else:
+                    sys.exit(21)
+
+                try:
+                    str(data, errors={invalid!r})
+                except LookupError:
+                    pass
+                else:
+                    sys.exit(22)
+
+                for encoding in encodings:
+                    try:
+                        str(data, encoding, errors={invalid!r})
+                    except LookupError:
+                        pass
+                    else:
+                        sys.exit(22)
+
+            for data in ('', 'short string'):
+                try:
+                    data.encode(encoding={invalid!r})
+                except LookupError:
+                    pass
+                else:
+                    sys.exit(23)
+
+                try:
+                    data.encode(errors={invalid!r})
+                except LookupError:
+                    pass
+                else:
+                    sys.exit(24)
+
+                for encoding in encodings:
+                    try:
+                        data.encode(encoding, errors={invalid!r})
+                    except LookupError:
+                        pass
+                    else:
+                        sys.exit(24)
+
+            sys.exit(10)
+        ''')
+        proc = assert_python_failure('-X', 'dev', '-c', code)
+        self.assertEqual(proc.rc, 10, proc)
+
+
+class StringModuleTest(unittest.TestCase):
+    def test_formatter_parser(self):
+        def parse(format):
+            return list(_string.formatter_parser(format))
+
+        formatter = parse("prefix {2!s}xxx{0:^+10.3f}{obj.attr!s} {z[0]!s:10}")
+        self.assertEqual(formatter, [
+            ('prefix ', '2', '', 's'),
+            ('xxx', '0', '^+10.3f', None),
+            ('', 'obj.attr', '', 's'),
+            (' ', 'z[0]', '10', 's'),
+        ])
+
+        formatter = parse("prefix {} suffix")
+        self.assertEqual(formatter, [
+            ('prefix ', '', '', None),
+            (' suffix', None, None, None),
+        ])
+
+        formatter = parse("str")
+        self.assertEqual(formatter, [
+            ('str', None, None, None),
+        ])
+
+        formatter = parse("")
+        self.assertEqual(formatter, [])
+
+        formatter = parse("{0}")
+        self.assertEqual(formatter, [
+            ('', '0', '', None),
+        ])
+
+        self.assertRaises(TypeError, _string.formatter_parser, 1)
+
+    def test_formatter_field_name_split(self):
+        def split(name):
+            items = list(_string.formatter_field_name_split(name))
+            items[1] = list(items[1])
+            return items
+        self.assertEqual(split("obj"), ["obj", []])
+        self.assertEqual(split("obj.arg"), ["obj", [(True, 'arg')]])
+        self.assertEqual(split("obj[key]"), ["obj", [(False, 'key')]])
+        self.assertEqual(split("obj.arg[key1][key2]"), [
+            "obj",
+            [(True, 'arg'),
+             (False, 'key1'),
+             (False, 'key2'),
+            ]])
+        self.assertRaises(TypeError, _string.formatter_field_name_split, 1)
+
+    def test_str_subclass_attr(self):
+
+        name = StrSubclass("name")
+        name2 = StrSubclass("name2")
+        class Bag:
+            pass
+
+        o = Bag()
+        with self.assertRaises(AttributeError):
+            delattr(o, name)
+        setattr(o, name, 1)
+        self.assertEqual(o.name, 1)
+        o.name = 2
+        self.assertEqual(list(o.__dict__), [name])
+
+        with self.assertRaises(AttributeError):
+            delattr(o, name2)
+        with self.assertRaises(AttributeError):
+            del o.name2
+        setattr(o, name2, 3)
+        self.assertEqual(o.name2, 3)
+        o.name2 = 4
+        self.assertEqual(list(o.__dict__), [name, name2])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_string_literals.py b/Lib/test/test_string_literals.py
index 9b663c00223d1b..371e8193b3544d 100644
--- a/Lib/test/test_string_literals.py
+++ b/Lib/test/test_string_literals.py
@@ -131,6 +131,18 @@ def test_eval_str_invalid_escape(self):
         self.assertEqual(exc.lineno, 1)
         self.assertEqual(exc.offset, 1)
 
+        # Check that the warning is raised ony once if there are syntax errors
+
+        with warnings.catch_warnings(record=True) as w:
+            warnings.simplefilter('always', category=SyntaxWarning)
+            with self.assertRaises(SyntaxError) as cm:
+                eval("'\\e' $")
+            exc = cm.exception
+        self.assertEqual(len(w), 1)
+        self.assertEqual(w[0].category, SyntaxWarning)
+        self.assertRegex(str(w[0].message), 'invalid escape sequence')
+        self.assertEqual(w[0].filename, '<string>')
+
     def test_eval_str_invalid_octal_escape(self):
         for i in range(0o400, 0o1000):
             with self.assertWarns(SyntaxWarning):
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py
index 6b1f22f66fd157..15f6ee06ffe19b 100644
--- a/Lib/test/test_struct.py
+++ b/Lib/test/test_struct.py
@@ -700,20 +700,6 @@ def test__struct_types_immutable(self):
                 with self.assertRaises(TypeError):
                     cls.x = 1
 
-    @support.cpython_only
-    def test__struct_Struct__new__initialized(self):
-        # See https://github.com/python/cpython/issues/78724
-
-        s = struct.Struct.__new__(struct.Struct, "b")
-        s.unpack_from(b"abcd")
-
-    @support.cpython_only
-    def test__struct_Struct_subclassing(self):
-        class Bob(struct.Struct):
-            pass
-
-        s = Bob("b")
-        s.unpack_from(b"abcd")
 
     def test_issue35714(self):
         # Embedded null characters should not be allowed in format strings.
@@ -774,6 +760,19 @@ def test_error_propagation(fmt_str):
         test_error_propagation('N')
         test_error_propagation('n')
 
+    def test_struct_subclass_instantiation(self):
+        # Regression test for https://github.com/python/cpython/issues/112358
+        class MyStruct(struct.Struct):
+            def __init__(self):
+                super().__init__('>h')
+
+        my_struct = MyStruct()
+        self.assertEqual(my_struct.pack(12345), b'\x30\x39')
+
+    def test_repr(self):
+        s = struct.Struct('=i2H')
+        self.assertEqual(repr(s), f'Struct({s.format!r})')
+
 class UnpackIteratorTest(unittest.TestCase):
     """
     Tests for iterative unpacking (struct.Struct.iter_unpack).
diff --git a/Lib/test/test_structseq.py b/Lib/test/test_structseq.py
index a9fe193028ebe4..6aec63e2603412 100644
--- a/Lib/test/test_structseq.py
+++ b/Lib/test/test_structseq.py
@@ -1,4 +1,7 @@
+import copy
 import os
+import pickle
+import re
 import time
 import unittest
 
@@ -89,10 +92,69 @@ def test_constructor(self):
         self.assertRaises(TypeError, t, "123")
         self.assertRaises(TypeError, t, "123", dict={})
         self.assertRaises(TypeError, t, "123456789", dict=None)
+        self.assertRaises(TypeError, t, seq="123456789", dict={})
+
+        self.assertEqual(t("123456789"), tuple("123456789"))
+        self.assertEqual(t("123456789", {}), tuple("123456789"))
+        self.assertEqual(t("123456789", dict={}), tuple("123456789"))
+        self.assertEqual(t(sequence="123456789", dict={}), tuple("123456789"))
+
+        self.assertEqual(t("1234567890"), tuple("123456789"))
+        self.assertEqual(t("1234567890").tm_zone, "0")
+        self.assertEqual(t("123456789", {"tm_zone": "some zone"}), tuple("123456789"))
+        self.assertEqual(t("123456789", {"tm_zone": "some zone"}).tm_zone, "some zone")
 
         s = "123456789"
         self.assertEqual("".join(t(s)), s)
 
+    def test_constructor_with_duplicate_fields(self):
+        t = time.struct_time
+
+        error_message = re.escape("got duplicate or unexpected field name(s)")
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("1234567890", dict={"tm_zone": "some zone"})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("1234567890", dict={"tm_zone": "some zone", "tm_mon": 1})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("1234567890", dict={"error": 0, "tm_zone": "some zone"})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("1234567890", dict={"error": 0, "tm_zone": "some zone", "tm_mon": 1})
+
+    def test_constructor_with_duplicate_unnamed_fields(self):
+        assert os.stat_result.n_unnamed_fields > 0
+        n_visible_fields = os.stat_result.n_sequence_fields
+
+        r = os.stat_result(range(n_visible_fields), {'st_atime': -1.0})
+        self.assertEqual(r.st_atime, -1.0)
+        self.assertEqual(r, tuple(range(n_visible_fields)))
+
+        r = os.stat_result((*range(n_visible_fields), -1.0))
+        self.assertEqual(r.st_atime, -1.0)
+        self.assertEqual(r, tuple(range(n_visible_fields)))
+
+        with self.assertRaisesRegex(TypeError,
+                                    re.escape("got duplicate or unexpected field name(s)")):
+            os.stat_result((*range(n_visible_fields), -1.0), {'st_atime': -1.0})
+
+    def test_constructor_with_unknown_fields(self):
+        t = time.struct_time
+
+        error_message = re.escape("got duplicate or unexpected field name(s)")
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"tm_year": 0})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"tm_year": 0, "tm_mon": 1})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"tm_zone": "some zone", "tm_mon": 1})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"tm_zone": "some zone", "error": 0})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"error": 0, "tm_zone": "some zone", "tm_mon": 1})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"error": 0})
+        with self.assertRaisesRegex(TypeError, error_message):
+            t("123456789", dict={"tm_zone": "some zone", "error": 0})
+
     def test_eviltuple(self):
         class Exc(Exception):
             pass
@@ -106,9 +168,78 @@ def __len__(self):
 
         self.assertRaises(Exc, time.struct_time, C())
 
-    def test_reduce(self):
+    def test_pickling(self):
         t = time.gmtime()
-        x = t.__reduce__()
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            p = pickle.dumps(t, proto)
+            t2 = pickle.loads(p)
+            self.assertEqual(t2.__class__, t.__class__)
+            self.assertEqual(t2, t)
+            self.assertEqual(t2.tm_year, t.tm_year)
+            self.assertEqual(t2.tm_zone, t.tm_zone)
+
+    def test_pickling_with_unnamed_fields(self):
+        assert os.stat_result.n_unnamed_fields > 0
+
+        r = os.stat_result(range(os.stat_result.n_sequence_fields),
+                           {'st_atime': 1.0, 'st_atime_ns': 2.0})
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            p = pickle.dumps(r, proto)
+            r2 = pickle.loads(p)
+            self.assertEqual(r2.__class__, r.__class__)
+            self.assertEqual(r2, r)
+            self.assertEqual(r2.st_mode, r.st_mode)
+            self.assertEqual(r2.st_atime, r.st_atime)
+            self.assertEqual(r2.st_atime_ns, r.st_atime_ns)
+
+    def test_copying(self):
+        n_fields = time.struct_time.n_fields
+        t = time.struct_time([[i] for i in range(n_fields)])
+
+        t2 = copy.copy(t)
+        self.assertEqual(t2.__class__, t.__class__)
+        self.assertEqual(t2, t)
+        self.assertEqual(t2.tm_year, t.tm_year)
+        self.assertEqual(t2.tm_zone, t.tm_zone)
+        self.assertIs(t2[0], t[0])
+        self.assertIs(t2.tm_year, t.tm_year)
+
+        t3 = copy.deepcopy(t)
+        self.assertEqual(t3.__class__, t.__class__)
+        self.assertEqual(t3, t)
+        self.assertEqual(t3.tm_year, t.tm_year)
+        self.assertEqual(t3.tm_zone, t.tm_zone)
+        self.assertIsNot(t3[0], t[0])
+        self.assertIsNot(t3.tm_year, t.tm_year)
+
+    def test_copying_with_unnamed_fields(self):
+        assert os.stat_result.n_unnamed_fields > 0
+
+        n_sequence_fields = os.stat_result.n_sequence_fields
+        r = os.stat_result([[i] for i in range(n_sequence_fields)],
+                           {'st_atime': [1.0], 'st_atime_ns': [2.0]})
+
+        r2 = copy.copy(r)
+        self.assertEqual(r2.__class__, r.__class__)
+        self.assertEqual(r2, r)
+        self.assertEqual(r2.st_mode, r.st_mode)
+        self.assertEqual(r2.st_atime, r.st_atime)
+        self.assertEqual(r2.st_atime_ns, r.st_atime_ns)
+        self.assertIs(r2[0], r[0])
+        self.assertIs(r2.st_mode, r.st_mode)
+        self.assertIs(r2.st_atime, r.st_atime)
+        self.assertIs(r2.st_atime_ns, r.st_atime_ns)
+
+        r3 = copy.deepcopy(r)
+        self.assertEqual(r3.__class__, r.__class__)
+        self.assertEqual(r3, r)
+        self.assertEqual(r3.st_mode, r.st_mode)
+        self.assertEqual(r3.st_atime, r.st_atime)
+        self.assertEqual(r3.st_atime_ns, r.st_atime_ns)
+        self.assertIsNot(r3[0], r[0])
+        self.assertIsNot(r3.st_mode, r.st_mode)
+        self.assertIsNot(r3.st_atime, r.st_atime)
+        self.assertIsNot(r3.st_atime_ns, r.st_atime_ns)
 
     def test_extended_getslice(self):
         # Test extended slicing by comparing with list slicing.
@@ -133,6 +264,84 @@ def test_match_args_with_unnamed_fields(self):
         self.assertEqual(os.stat_result.n_unnamed_fields, 3)
         self.assertEqual(os.stat_result.__match_args__, expected_args)
 
+    def test_copy_replace_all_fields_visible(self):
+        assert os.times_result.n_unnamed_fields == 0
+        assert os.times_result.n_sequence_fields == os.times_result.n_fields
+
+        t = os.times()
+
+        # visible fields
+        self.assertEqual(copy.replace(t), t)
+        self.assertIsInstance(copy.replace(t), os.times_result)
+        self.assertEqual(copy.replace(t, user=1.5), (1.5, *t[1:]))
+        self.assertEqual(copy.replace(t, system=2.5), (t[0], 2.5, *t[2:]))
+        self.assertEqual(copy.replace(t, user=1.5, system=2.5), (1.5, 2.5, *t[2:]))
+
+        # unknown fields
+        with self.assertRaisesRegex(TypeError, 'unexpected field name'):
+            copy.replace(t, error=-1)
+        with self.assertRaisesRegex(TypeError, 'unexpected field name'):
+            copy.replace(t, user=1, error=-1)
+
+    def test_copy_replace_with_invisible_fields(self):
+        assert time.struct_time.n_unnamed_fields == 0
+        assert time.struct_time.n_sequence_fields < time.struct_time.n_fields
+
+        t = time.gmtime(0)
+
+        # visible fields
+        t2 = copy.replace(t)
+        self.assertEqual(t2, (1970, 1, 1, 0, 0, 0, 3, 1, 0))
+        self.assertIsInstance(t2, time.struct_time)
+        t3 = copy.replace(t, tm_year=2000)
+        self.assertEqual(t3, (2000, 1, 1, 0, 0, 0, 3, 1, 0))
+        self.assertEqual(t3.tm_year, 2000)
+        t4 = copy.replace(t, tm_mon=2)
+        self.assertEqual(t4, (1970, 2, 1, 0, 0, 0, 3, 1, 0))
+        self.assertEqual(t4.tm_mon, 2)
+        t5 = copy.replace(t, tm_year=2000, tm_mon=2)
+        self.assertEqual(t5, (2000, 2, 1, 0, 0, 0, 3, 1, 0))
+        self.assertEqual(t5.tm_year, 2000)
+        self.assertEqual(t5.tm_mon, 2)
+
+        # named invisible fields
+        self.assertTrue(hasattr(t, 'tm_zone'), f"{t} has no attribute 'tm_zone'")
+        with self.assertRaisesRegex(AttributeError, 'readonly attribute'):
+            t.tm_zone = 'some other zone'
+        self.assertEqual(t2.tm_zone, t.tm_zone)
+        self.assertEqual(t3.tm_zone, t.tm_zone)
+        self.assertEqual(t4.tm_zone, t.tm_zone)
+        t6 = copy.replace(t, tm_zone='some other zone')
+        self.assertEqual(t, t6)
+        self.assertEqual(t6.tm_zone, 'some other zone')
+        t7 = copy.replace(t, tm_year=2000, tm_zone='some other zone')
+        self.assertEqual(t7, (2000, 1, 1, 0, 0, 0, 3, 1, 0))
+        self.assertEqual(t7.tm_year, 2000)
+        self.assertEqual(t7.tm_zone, 'some other zone')
+
+        # unknown fields
+        with self.assertRaisesRegex(TypeError, 'unexpected field name'):
+            copy.replace(t, error=2)
+        with self.assertRaisesRegex(TypeError, 'unexpected field name'):
+            copy.replace(t, tm_year=2000, error=2)
+        with self.assertRaisesRegex(TypeError, 'unexpected field name'):
+            copy.replace(t, tm_zone='some other zone', error=2)
+
+    def test_copy_replace_with_unnamed_fields(self):
+        assert os.stat_result.n_unnamed_fields > 0
+
+        r = os.stat_result(range(os.stat_result.n_sequence_fields))
+
+        error_message = re.escape('__replace__() is not supported')
+        with self.assertRaisesRegex(TypeError, error_message):
+            copy.replace(r)
+        with self.assertRaisesRegex(TypeError, error_message):
+            copy.replace(r, st_mode=1)
+        with self.assertRaisesRegex(TypeError, error_message):
+            copy.replace(r, error=2)
+        with self.assertRaisesRegex(TypeError, error_message):
+            copy.replace(r, st_mode=1, error=2)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_subclassinit.py b/Lib/test/test_subclassinit.py
index 310473a4a2fe58..0d32aa509bd25c 100644
--- a/Lib/test/test_subclassinit.py
+++ b/Lib/test/test_subclassinit.py
@@ -230,7 +230,7 @@ def __init__(self, name, bases, namespace, otherarg):
                 super().__init__(name, bases, namespace)
 
         with self.assertRaises(TypeError):
-            class MyClass(metaclass=MyMeta, otherarg=1):
+            class MyClass2(metaclass=MyMeta, otherarg=1):
                 pass
 
         class MyMeta(type):
@@ -241,10 +241,10 @@ def __init__(self, name, bases, namespace, otherarg):
                 super().__init__(name, bases, namespace)
                 self.otherarg = otherarg
 
-        class MyClass(metaclass=MyMeta, otherarg=1):
+        class MyClass3(metaclass=MyMeta, otherarg=1):
             pass
 
-        self.assertEqual(MyClass.otherarg, 1)
+        self.assertEqual(MyClass3.otherarg, 1)
 
     def test_errors_changed_pep487(self):
         # These tests failed before Python 3.6, PEP 487
@@ -263,10 +263,10 @@ def __new__(cls, name, bases, namespace, otherarg):
                 self.otherarg = otherarg
                 return self
 
-        class MyClass(metaclass=MyMeta, otherarg=1):
+        class MyClass2(metaclass=MyMeta, otherarg=1):
             pass
 
-        self.assertEqual(MyClass.otherarg, 1)
+        self.assertEqual(MyClass2.otherarg, 1)
 
     def test_type(self):
         t = type('NewClass', (object,), {})
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 3880125807f235..5eeea54fd55f1a 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -1,9 +1,11 @@
 import unittest
 from unittest import mock
 from test import support
+from test.support import check_sanitizer
 from test.support import import_helper
 from test.support import os_helper
 from test.support import warnings_helper
+from test.support.script_helper import assert_python_ok
 import subprocess
 import sys
 import signal
@@ -267,6 +269,7 @@ def test_check_output_stdin_with_input_arg(self):
         self.assertIn('stdin', c.exception.args[0])
         self.assertIn('input', c.exception.args[0])
 
+    @support.requires_resource('walltime')
     def test_check_output_timeout(self):
         # check_output() function with timeout arg
         with self.assertRaises(subprocess.TimeoutExpired) as c:
@@ -746,31 +749,36 @@ def test_pipesizes(self):
     @unittest.skipUnless(fcntl and hasattr(fcntl, 'F_GETPIPE_SZ'),
                          'fcntl.F_GETPIPE_SZ required for test.')
     def test_pipesize_default(self):
-        p = subprocess.Popen(
+        proc = subprocess.Popen(
             [sys.executable, "-c",
              'import sys; sys.stdin.read(); sys.stdout.write("out"); '
              'sys.stderr.write("error!")'],
             stdin=subprocess.PIPE, stdout=subprocess.PIPE,
             stderr=subprocess.PIPE, pipesize=-1)
-        try:
-            fp_r, fp_w = os.pipe()
+
+        with proc:
             try:
-                default_pipesize = fcntl.fcntl(fp_w, fcntl.F_GETPIPE_SZ)
-                for fifo in [p.stdin, p.stdout, p.stderr]:
-                    self.assertEqual(
-                        fcntl.fcntl(fifo.fileno(), fcntl.F_GETPIPE_SZ),
-                        default_pipesize)
+                fp_r, fp_w = os.pipe()
+                try:
+                    default_read_pipesize = fcntl.fcntl(fp_r, fcntl.F_GETPIPE_SZ)
+                    default_write_pipesize = fcntl.fcntl(fp_w, fcntl.F_GETPIPE_SZ)
+                finally:
+                    os.close(fp_r)
+                    os.close(fp_w)
+
+                self.assertEqual(
+                    fcntl.fcntl(proc.stdin.fileno(), fcntl.F_GETPIPE_SZ),
+                    default_read_pipesize)
+                self.assertEqual(
+                    fcntl.fcntl(proc.stdout.fileno(), fcntl.F_GETPIPE_SZ),
+                    default_write_pipesize)
+                self.assertEqual(
+                    fcntl.fcntl(proc.stderr.fileno(), fcntl.F_GETPIPE_SZ),
+                    default_write_pipesize)
+                # On other platforms we cannot test the pipe size (yet). But above
+                # code using pipesize=-1 should not crash.
             finally:
-                os.close(fp_r)
-                os.close(fp_w)
-            # On other platforms we cannot test the pipe size (yet). But above
-            # code using pipesize=-1 should not crash.
-            p.stdin.close()
-            p.stdout.close()
-            p.stderr.close()
-        finally:
-            p.kill()
-            p.wait()
+                proc.kill()
 
     def test_env(self):
         newenv = os.environ.copy()
@@ -790,6 +798,8 @@ def test_env(self):
     @unittest.skipIf(sysconfig.get_config_var('Py_ENABLE_SHARED') == 1,
                      'The Python shared library cannot be loaded '
                      'with an empty environment.')
+    @unittest.skipIf(check_sanitizer(address=True),
+                     'AddressSanitizer adds to the environment.')
     def test_empty_env(self):
         """Verify that env={} is as empty as possible."""
 
@@ -1288,6 +1298,7 @@ def test_bufsize_equal_one_binary_mode(self):
         with self.assertWarnsRegex(RuntimeWarning, 'line buffering'):
             self._test_bufsize_equal_one(line, b'', universal_newlines=False)
 
+    @support.requires_resource('cpu')
     def test_leaking_fds_on_error(self):
         # see bug #5179: Popen leaks file descriptors to PIPEs if
         # the child fails to execute; this will eventually exhaust
@@ -1550,21 +1561,6 @@ def test_class_getitems(self):
         self.assertIsInstance(subprocess.Popen[bytes], types.GenericAlias)
         self.assertIsInstance(subprocess.CompletedProcess[str], types.GenericAlias)
 
-    @unittest.skipIf(not sysconfig.get_config_var("HAVE_VFORK"),
-                     "vfork() not enabled by configure.")
-    @mock.patch("subprocess._fork_exec")
-    def test__use_vfork(self, mock_fork_exec):
-        self.assertTrue(subprocess._USE_VFORK)  # The default value regardless.
-        mock_fork_exec.side_effect = RuntimeError("just testing args")
-        with self.assertRaises(RuntimeError):
-            subprocess.run([sys.executable, "-c", "pass"])
-        mock_fork_exec.assert_called_once()
-        self.assertTrue(mock_fork_exec.call_args.args[-1])
-        with mock.patch.object(subprocess, '_USE_VFORK', False):
-            with self.assertRaises(RuntimeError):
-                subprocess.run([sys.executable, "-c", "pass"])
-            self.assertFalse(mock_fork_exec.call_args_list[-1].args[-1])
-
 
 class RunFuncTestCase(BaseTestCase):
     def run_python(self, code, **kwargs):
@@ -1638,6 +1634,7 @@ def test_check_output_stdin_with_input_arg(self):
         self.assertIn('stdin', c.exception.args[0])
         self.assertIn('input', c.exception.args[0])
 
+    @support.requires_resource('walltime')
     def test_check_output_timeout(self):
         with self.assertRaises(subprocess.TimeoutExpired) as c:
             cp = self.run_python((
@@ -1688,6 +1685,14 @@ def test_run_with_pathlike_path_and_arguments(self):
         res = subprocess.run(args)
         self.assertEqual(res.returncode, 57)
 
+    @unittest.skipUnless(mswindows, "Maybe test trigger a leak on Ubuntu")
+    def test_run_with_an_empty_env(self):
+        # gh-105436: fix subprocess.run(..., env={}) broken on Windows
+        args = [sys.executable, "-c", 'pass']
+        # Ignore subprocess errors - we only care that the API doesn't
+        # raise an OSError
+        subprocess.run(args, env={})
+
     def test_capture_output(self):
         cp = self.run_python(("import sys;"
                               "sys.stdout.write('BDFL'); "
@@ -1749,9 +1754,9 @@ def test_encoding_warning(self):
         cp = subprocess.run([sys.executable, "-Xwarn_default_encoding", "-c", code],
                             capture_output=True)
         lines = cp.stderr.splitlines()
-        self.assertEqual(len(lines), 2, lines)
+        self.assertEqual(len(lines), 4, lines)
         self.assertTrue(lines[0].startswith(b"<string>:2: EncodingWarning: "))
-        self.assertTrue(lines[1].startswith(b"<string>:3: EncodingWarning: "))
+        self.assertTrue(lines[2].startswith(b"<string>:3: EncodingWarning: "))
 
 
 def _get_test_grp_name():
@@ -2046,8 +2051,14 @@ def test_group_error(self):
     def test_extra_groups(self):
         gid = os.getegid()
         group_list = [65534 if gid != 65534 else 65533]
+        self._test_extra_groups_impl(gid=gid, group_list=group_list)
+
+    @unittest.skipUnless(hasattr(os, 'setgroups'), 'no setgroups() on platform')
+    def test_extra_groups_empty_list(self):
+        self._test_extra_groups_impl(gid=os.getegid(), group_list=[])
+
+    def _test_extra_groups_impl(self, *, gid, group_list):
         name_group = _get_test_grp_name()
-        perm_error = False
 
         if grp is not None:
             group_list.append(name_group)
@@ -2057,11 +2068,8 @@ def test_extra_groups(self):
                     [sys.executable, "-c",
                      "import os, sys, json; json.dump(os.getgroups(), sys.stdout)"],
                     extra_groups=group_list)
-        except OSError as ex:
-            if ex.errno != errno.EPERM:
-                raise
-            perm_error = True
-
+        except PermissionError:
+            self.skipTest("setgroup() EPERM; this test may require root.")
         else:
             parent_groups = os.getgroups()
             child_groups = json.loads(output)
@@ -2072,12 +2080,15 @@ def test_extra_groups(self):
             else:
                 desired_gids = group_list
 
-            if perm_error:
-                self.assertEqual(set(child_groups), set(parent_groups))
-            else:
-                self.assertEqual(set(desired_gids), set(child_groups))
+            self.assertEqual(set(desired_gids), set(child_groups))
 
-        # make sure we bomb on negative values
+        if grp is None:
+            with self.assertRaises(ValueError):
+                subprocess.check_call(ZERO_RETURN_CMD,
+                                      extra_groups=[name_group])
+
+    # No skip necessary, this test won't make it to a setgroup() call.
+    def test_extra_groups_invalid_gid_t_values(self):
         with self.assertRaises(ValueError):
             subprocess.check_call(ZERO_RETURN_CMD, extra_groups=[-1])
 
@@ -2086,16 +2097,6 @@ def test_extra_groups(self):
                                   cwd=os.curdir, env=os.environ,
                                   extra_groups=[2**64])
 
-        if grp is None:
-            with self.assertRaises(ValueError):
-                subprocess.check_call(ZERO_RETURN_CMD,
-                                      extra_groups=[name_group])
-
-    @unittest.skipIf(hasattr(os, 'setgroups'), 'setgroups() available on platform')
-    def test_extra_groups_error(self):
-        with self.assertRaises(ValueError):
-            subprocess.check_call(ZERO_RETURN_CMD, extra_groups=[])
-
     @unittest.skipIf(mswindows or not hasattr(os, 'umask'),
                      'POSIX umask() is not available.')
     def test_umask(self):
@@ -3326,6 +3327,107 @@ def test_communicate_repeated_call_after_stdout_close(self):
             except subprocess.TimeoutExpired:
                 pass
 
+    def test_preexec_at_exit(self):
+        code = f"""if 1:
+        import atexit
+        import subprocess
+
+        def dummy():
+            pass
+
+        def exit_handler():
+            subprocess.Popen({ZERO_RETURN_CMD}, preexec_fn=dummy)
+            print("shouldn't be printed")
+
+        atexit.register(exit_handler)
+        """
+        _, out, err = assert_python_ok("-c", code)
+        self.assertEqual(out, b'')
+        self.assertIn(b"preexec_fn not supported at interpreter shutdown", err)
+
+    @unittest.skipIf(not sysconfig.get_config_var("HAVE_VFORK"),
+                     "vfork() not enabled by configure.")
+    @mock.patch("subprocess._fork_exec")
+    def test__use_vfork(self, mock_fork_exec):
+        self.assertTrue(subprocess._USE_VFORK)  # The default value regardless.
+        mock_fork_exec.side_effect = RuntimeError("just testing args")
+        with self.assertRaises(RuntimeError):
+            subprocess.run([sys.executable, "-c", "pass"])
+        mock_fork_exec.assert_called_once()
+        # NOTE: These assertions are *ugly* as they require the last arg
+        # to remain the have_vfork boolean. We really need to refactor away
+        # from the giant "wall of args" internal C extension API.
+        self.assertTrue(mock_fork_exec.call_args.args[-1])
+        with mock.patch.object(subprocess, '_USE_VFORK', False):
+            with self.assertRaises(RuntimeError):
+                subprocess.run([sys.executable, "-c", "pass"])
+            self.assertFalse(mock_fork_exec.call_args_list[-1].args[-1])
+
+    @unittest.skipIf(not sysconfig.get_config_var("HAVE_VFORK"),
+                     "vfork() not enabled by configure.")
+    @unittest.skipIf(sys.platform != "linux", "Linux only, requires strace.")
+    def test_vfork_used_when_expected(self):
+        # This is a performance regression test to ensure we default to using
+        # vfork() when possible.
+        strace_binary = "/usr/bin/strace"
+        # The only system calls we are interested in.
+        strace_filter = "--trace=clone,clone2,clone3,fork,vfork,exit,exit_group"
+        true_binary = "/bin/true"
+        strace_command = [strace_binary, strace_filter]
+
+        try:
+            does_strace_work_process = subprocess.run(
+                    strace_command + [true_binary],
+                    stderr=subprocess.PIPE,
+                    stdout=subprocess.DEVNULL,
+            )
+            rc = does_strace_work_process.returncode
+            stderr = does_strace_work_process.stderr
+        except OSError:
+            rc = -1
+            stderr = ""
+        if rc or (b"+++ exited with 0 +++" not in stderr):
+            self.skipTest("strace not found or not working as expected.")
+
+        with self.subTest(name="default_is_vfork"):
+            vfork_result = assert_python_ok(
+                    "-c",
+                    textwrap.dedent(f"""\
+                    import subprocess
+                    subprocess.check_call([{true_binary!r}])"""),
+                    __run_using_command=strace_command,
+            )
+            # Match both vfork() and clone(..., flags=...|CLONE_VFORK|...)
+            self.assertRegex(vfork_result.err, br"(?i)vfork")
+            # Do NOT check that fork() or other clones did not happen.
+            # If the OS denys the vfork it'll fallback to plain fork().
+
+        # Test that each individual thing that would disable the use of vfork
+        # actually disables it.
+        for sub_name, preamble, sp_kwarg, expect_permission_error in (
+                ("!use_vfork", "subprocess._USE_VFORK = False", "", False),
+                ("preexec", "", "preexec_fn=lambda: None", False),
+                ("setgid", "", f"group={os.getgid()}", True),
+                ("setuid", "", f"user={os.getuid()}", True),
+                ("setgroups", "", "extra_groups=[]", True),
+        ):
+            with self.subTest(name=sub_name):
+                non_vfork_result = assert_python_ok(
+                    "-c",
+                    textwrap.dedent(f"""\
+                    import subprocess
+                    {preamble}
+                    try:
+                        subprocess.check_call(
+                                [{true_binary!r}], **dict({sp_kwarg}))
+                    except PermissionError:
+                        if not {expect_permission_error}:
+                            raise"""),
+                    __run_using_command=strace_command,
+                )
+                # Ensure neither vfork() or clone(..., flags=...|CLONE_VFORK|...).
+                self.assertNotRegex(non_vfork_result.err, br"(?i)vfork")
+
 
 @unittest.skipUnless(mswindows, "Windows specific tests")
 class Win32ProcessTestCase(BaseTestCase):
diff --git a/Lib/test/test_sunau.py b/Lib/test/test_sunau.py
deleted file mode 100644
index 40408b01eda9ac..00000000000000
--- a/Lib/test/test_sunau.py
+++ /dev/null
@@ -1,160 +0,0 @@
-import unittest
-from test import audiotests
-import io
-import struct
-import sys
-from test.support import warnings_helper
-
-sunau = warnings_helper.import_deprecated("sunau")
-audioop = warnings_helper.import_deprecated("audioop")
-
-
-class SunauTest(audiotests.AudioWriteTests,
-                audiotests.AudioTestsWithSourceFile):
-    module = sunau
-
-
-class SunauPCM8Test(SunauTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm8.au'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 1
-    framerate = 11025
-    nframes = 48
-    comptype = 'NONE'
-    compname = 'not compressed'
-    frames = bytes.fromhex("""\
-      02FF 4B00 3104 8008 CB06 4803 BF01 03FE B8FA B4F3 29EB 1AE6 \
-      EDE4 C6E2 0EE0 EFE0 57E2 FBE8 13EF D8F7 97FB F5FC 08FB DFFB \
-      11FA 3EFB BCFC 66FF CF04 4309 C10E 5112 EE17 8216 7F14 8012 \
-      490E 520D EF0F CE0F E40C 630A 080A 2B0B 510E 8B11 B60E 440A \
-      """)
-
-
-class SunauPCM16Test(SunauTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm16.au'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 2
-    framerate = 11025
-    nframes = 48
-    comptype = 'NONE'
-    compname = 'not compressed'
-    frames = bytes.fromhex("""\
-      022EFFEA 4B5C00F9 311404EF 80DB0844 CBE006B0 48AB03F3 BFE601B5 0367FE80 \
-      B853FA42 B4AFF351 2997EBCD 1A5AE6DC EDF9E492 C627E277 0E06E0B7 EF29E029 \
-      5759E271 FB34E83F 1377EF85 D82CF727 978EFB79 F5F7FC12 0864FB9E DF30FB40 \
-      1183FA30 3EEAFB59 BC78FCB4 66D5FF60 CF130415 431A097D C1BA0EC7 512312A0 \
-      EEE11754 82071666 7FFE1448 80001298 49990EB7 52B40DC1 EFAD0F65 CE3A0FBE \
-      E4B70CE6 63490A57 08CC0A1D 2BBC0B09 51480E46 8BCB113C B6F60EE9 44150A5A \
-      """)
-
-
-class SunauPCM24Test(SunauTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm24.au'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 3
-    framerate = 11025
-    nframes = 48
-    comptype = 'NONE'
-    compname = 'not compressed'
-    frames = bytes.fromhex("""\
-      022D65FFEB9D 4B5A0F00FA54 3113C304EE2B 80DCD6084303 \
-      CBDEC006B261 48A99803F2F8 BFE82401B07D 036BFBFE7B5D \
-      B85756FA3EC9 B4B055F3502B 299830EBCB62 1A5CA7E6D99A \
-      EDFA3EE491BD C625EBE27884 0E05A9E0B6CF EF2929E02922 \
-      5758D8E27067 FB3557E83E16 1377BFEF8402 D82C5BF7272A \
-      978F16FB7745 F5F865FC1013 086635FB9C4E DF30FCFB40EE \
-      117FE0FA3438 3EE6B8FB5AC3 BC77A3FCB2F4 66D6DAFF5F32 \
-      CF13B9041275 431D69097A8C C1BB600EC74E 5120B912A2BA \
-      EEDF641754C0 8207001664B7 7FFFFF14453F 8000001294E6 \
-      499C1B0EB3B2 52B73E0DBCA0 EFB2B20F5FD8 CE3CDB0FBE12 \
-      E4B49C0CEA2D 6344A80A5A7C 08C8FE0A1FFE 2BB9860B0A0E \
-      51486F0E44E1 8BCC64113B05 B6F4EC0EEB36 4413170A5B48 \
-      """)
-
-
-class SunauPCM32Test(SunauTest, unittest.TestCase):
-    sndfilename = 'pluck-pcm32.au'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 4
-    framerate = 11025
-    nframes = 48
-    comptype = 'NONE'
-    compname = 'not compressed'
-    frames = bytes.fromhex("""\
-      022D65BCFFEB9D92 4B5A0F8000FA549C 3113C34004EE2BC0 80DCD680084303E0 \
-      CBDEC0C006B26140 48A9980003F2F8FC BFE8248001B07D92 036BFB60FE7B5D34 \
-      B8575600FA3EC920 B4B05500F3502BC0 29983000EBCB6240 1A5CA7A0E6D99A60 \
-      EDFA3E80E491BD40 C625EB80E27884A0 0E05A9A0E0B6CFE0 EF292940E0292280 \
-      5758D800E2706700 FB3557D8E83E1640 1377BF00EF840280 D82C5B80F7272A80 \
-      978F1600FB774560 F5F86510FC101364 086635A0FB9C4E20 DF30FC40FB40EE28 \
-      117FE0A0FA3438B0 3EE6B840FB5AC3F0 BC77A380FCB2F454 66D6DA80FF5F32B4 \
-      CF13B980041275B0 431D6980097A8C00 C1BB60000EC74E00 5120B98012A2BAA0 \
-      EEDF64C01754C060 820700001664B780 7FFFFFFF14453F40 800000001294E6E0 \
-      499C1B000EB3B270 52B73E000DBCA020 EFB2B2E00F5FD880 CE3CDB400FBE1270 \
-      E4B49CC00CEA2D90 6344A8800A5A7CA0 08C8FE800A1FFEE0 2BB986C00B0A0E00 \
-      51486F800E44E190 8BCC6480113B0580 B6F4EC000EEB3630 441317800A5B48A0 \
-      """)
-
-
-class SunauULAWTest(SunauTest, unittest.TestCase):
-    sndfilename = 'pluck-ulaw.au'
-    sndfilenframes = 3307
-    nchannels = 2
-    sampwidth = 2
-    framerate = 11025
-    nframes = 48
-    comptype = 'ULAW'
-    compname = 'CCITT G.711 u-law'
-    frames = bytes.fromhex("""\
-      022CFFE8 497C00F4 307C04DC 8284083C CB84069C 497C03DC BE8401AC 036CFE74 \
-      B684FA24 B684F344 2A7CEC04 19FCE704 EE04E504 C584E204 0E3CE104 EF04DF84 \
-      557CE204 FB24E804 12FCEF04 D784F744 9684FB64 F5C4FC24 083CFBA4 DF84FB24 \
-      11FCFA24 3E7CFB64 BA84FCB4 657CFF5C CF84041C 417C09BC C1840EBC 517C12FC \
-      EF0416FC 828415FC 7D7C13FC 828412FC 497C0EBC 517C0DBC F0040F3C CD840FFC \
-      E5040CBC 617C0A3C 08BC0A3C 2C7C0B3C 517C0E3C 8A8410FC B6840EBC 457C0A3C \
-      """)
-    if sys.byteorder != 'big':
-        frames = audioop.byteswap(frames, 2)
-
-
-class SunauLowLevelTest(unittest.TestCase):
-
-    def test_read_bad_magic_number(self):
-        b = b'SPA'
-        with self.assertRaises(EOFError):
-            sunau.open(io.BytesIO(b))
-        b = b'SPAM'
-        with self.assertRaisesRegex(sunau.Error, 'bad magic number'):
-            sunau.open(io.BytesIO(b))
-
-    def test_read_too_small_header(self):
-        b = struct.pack('>LLLLL', sunau.AUDIO_FILE_MAGIC, 20, 0,
-                        sunau.AUDIO_FILE_ENCODING_LINEAR_8, 11025)
-        with self.assertRaisesRegex(sunau.Error, 'header size too small'):
-            sunau.open(io.BytesIO(b))
-
-    def test_read_too_large_header(self):
-        b = struct.pack('>LLLLLL', sunau.AUDIO_FILE_MAGIC, 124, 0,
-                        sunau.AUDIO_FILE_ENCODING_LINEAR_8, 11025, 1)
-        b += b'\0' * 100
-        with self.assertRaisesRegex(sunau.Error, 'header size ridiculously large'):
-            sunau.open(io.BytesIO(b))
-
-    def test_read_wrong_encoding(self):
-        b = struct.pack('>LLLLLL', sunau.AUDIO_FILE_MAGIC, 24, 0, 0, 11025, 1)
-        with self.assertRaisesRegex(sunau.Error, r'encoding not \(yet\) supported'):
-            sunau.open(io.BytesIO(b))
-
-    def test_read_wrong_number_of_channels(self):
-        b = struct.pack('>LLLLLL', sunau.AUDIO_FILE_MAGIC, 24, 0,
-                        sunau.AUDIO_FILE_ENCODING_LINEAR_8, 11025, 0)
-        with self.assertRaisesRegex(sunau.Error, 'bad # of channels'):
-            sunau.open(io.BytesIO(b))
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_super.py b/Lib/test/test_super.py
index 698ab48f48eaa1..43162c540b55ae 100644
--- a/Lib/test/test_super.py
+++ b/Lib/test/test_super.py
@@ -5,6 +5,9 @@
 from test import shadowed_super
 
 
+ADAPTIVE_WARMUP_DELAY = 2
+
+
 class A:
     def f(self):
         return 'A'
@@ -410,6 +413,57 @@ def method(self):
 
         self.assertEqual(C().method(), mysuper)
 
+    def test_unusual_getattro(self):
+        class MyType(type):
+            pass
+
+        def test(name):
+            mytype = MyType(name, (MyType,), {})
+            super(MyType, type(mytype)).__setattr__(mytype, "bar", 1)
+            self.assertEqual(mytype.bar, 1)
+
+        for _ in range(ADAPTIVE_WARMUP_DELAY):
+            test("foo1")
+
+    def test_reassigned_new(self):
+        class A:
+            def __new__(cls):
+                pass
+
+            def __init_subclass__(cls):
+                if "__new__" not in cls.__dict__:
+                    cls.__new__ = cls.__new__
+
+        class B(A):
+            pass
+
+        class C(B):
+            def __new__(cls):
+                return super().__new__(cls)
+
+        for _ in range(ADAPTIVE_WARMUP_DELAY):
+            C()
+
+    def test_mixed_staticmethod_hierarchy(self):
+        # This test is just a desugared version of `test_reassigned_new`
+        class A:
+            @staticmethod
+            def some(cls, *args, **kwargs):
+                self.assertFalse(args)
+                self.assertFalse(kwargs)
+
+        class B(A):
+            def some(cls, *args, **kwargs):
+                return super().some(cls, *args, **kwargs)
+
+        class C(B):
+            @staticmethod
+            def some(cls):
+                return super().some(cls)
+
+        for _ in range(ADAPTIVE_WARMUP_DELAY):
+            C.some(C)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
index 85d692f3097494..c34b0e5e015702 100644
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -7,6 +7,7 @@
 import stat
 import subprocess
 import sys
+import sysconfig
 import tempfile
 import textwrap
 import unittest
@@ -430,10 +431,7 @@ def test_check__all__(self):
 
         extra = {
             'TextTestResult',
-            'findTestCases',
-            'getTestCaseNames',
             'installHandler',
-            'makeSuite',
         }
         not_exported = {'load_tests', "TestProgram", "BaseTestSuite"}
         support.check__all__(self,
@@ -500,6 +498,7 @@ def check_options(self, args, func, expected=None):
         self.assertEqual(proc.stdout.rstrip(), repr(expected))
         self.assertEqual(proc.returncode, 0)
 
+    @support.requires_resource('cpu')
     def test_args_from_interpreter_flags(self):
         # Test test.support.args_from_interpreter_flags()
         for opts in (
@@ -548,111 +547,6 @@ def test_optim_args_from_interpreter_flags(self):
             with self.subTest(opts=opts):
                 self.check_options(opts, 'optim_args_from_interpreter_flags')
 
-    def test_match_test(self):
-        class Test:
-            def __init__(self, test_id):
-                self.test_id = test_id
-
-            def id(self):
-                return self.test_id
-
-        test_access = Test('test.test_os.FileTests.test_access')
-        test_chdir = Test('test.test_os.Win32ErrorTests.test_chdir')
-
-        # Test acceptance
-        with support.swap_attr(support, '_match_test_func', None):
-            # match all
-            support.set_match_tests([])
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # match all using None
-            support.set_match_tests(None, None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # match the full test identifier
-            support.set_match_tests([test_access.id()], None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertFalse(support.match_test(test_chdir))
-
-            # match the module name
-            support.set_match_tests(['test_os'], None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # Test '*' pattern
-            support.set_match_tests(['test_*'], None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # Test case sensitivity
-            support.set_match_tests(['filetests'], None)
-            self.assertFalse(support.match_test(test_access))
-            support.set_match_tests(['FileTests'], None)
-            self.assertTrue(support.match_test(test_access))
-
-            # Test pattern containing '.' and a '*' metacharacter
-            support.set_match_tests(['*test_os.*.test_*'], None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # Multiple patterns
-            support.set_match_tests([test_access.id(), test_chdir.id()], None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            support.set_match_tests(['test_access', 'DONTMATCH'], None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertFalse(support.match_test(test_chdir))
-
-        # Test rejection
-        with support.swap_attr(support, '_match_test_func', None):
-            # match all
-            support.set_match_tests(ignore_patterns=[])
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # match all using None
-            support.set_match_tests(None, None)
-            self.assertTrue(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # match the full test identifier
-            support.set_match_tests(None, [test_access.id()])
-            self.assertFalse(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
-            # match the module name
-            support.set_match_tests(None, ['test_os'])
-            self.assertFalse(support.match_test(test_access))
-            self.assertFalse(support.match_test(test_chdir))
-
-            # Test '*' pattern
-            support.set_match_tests(None, ['test_*'])
-            self.assertFalse(support.match_test(test_access))
-            self.assertFalse(support.match_test(test_chdir))
-
-            # Test case sensitivity
-            support.set_match_tests(None, ['filetests'])
-            self.assertTrue(support.match_test(test_access))
-            support.set_match_tests(None, ['FileTests'])
-            self.assertFalse(support.match_test(test_access))
-
-            # Test pattern containing '.' and a '*' metacharacter
-            support.set_match_tests(None, ['*test_os.*.test_*'])
-            self.assertFalse(support.match_test(test_access))
-            self.assertFalse(support.match_test(test_chdir))
-
-            # Multiple patterns
-            support.set_match_tests(None, [test_access.id(), test_chdir.id()])
-            self.assertFalse(support.match_test(test_access))
-            self.assertFalse(support.match_test(test_chdir))
-
-            support.set_match_tests(None, ['test_access', 'DONTMATCH'])
-            self.assertFalse(support.match_test(test_access))
-            self.assertTrue(support.match_test(test_chdir))
-
     @unittest.skipIf(support.is_emscripten, "Unstable in Emscripten")
     @unittest.skipIf(support.is_wasi, "Unavailable on WASI")
     def test_fd_count(self):
@@ -687,6 +581,157 @@ def test_has_strftime_extensions(self):
         else:
             self.assertTrue(support.has_strftime_extensions)
 
+    def test_get_recursion_depth(self):
+        # test support.get_recursion_depth()
+        code = textwrap.dedent("""
+            from test import support
+            import sys
+
+            def check(cond):
+                if not cond:
+                    raise AssertionError("test failed")
+
+            # depth 1
+            check(support.get_recursion_depth() == 1)
+
+            # depth 2
+            def test_func():
+                check(support.get_recursion_depth() == 2)
+            test_func()
+
+            def test_recursive(depth, limit):
+                if depth >= limit:
+                    # cannot call get_recursion_depth() at this depth,
+                    # it can raise RecursionError
+                    return
+                get_depth = support.get_recursion_depth()
+                print(f"test_recursive: {depth}/{limit}: "
+                      f"get_recursion_depth() says {get_depth}")
+                check(get_depth == depth)
+                test_recursive(depth + 1, limit)
+
+            # depth up to 25
+            with support.infinite_recursion(max_depth=25):
+                limit = sys.getrecursionlimit()
+                print(f"test with sys.getrecursionlimit()={limit}")
+                test_recursive(2, limit)
+
+            # depth up to 500
+            with support.infinite_recursion(max_depth=500):
+                limit = sys.getrecursionlimit()
+                print(f"test with sys.getrecursionlimit()={limit}")
+                test_recursive(2, limit)
+        """)
+        script_helper.assert_python_ok("-c", code)
+
+    def test_recursion(self):
+        # Test infinite_recursion() and get_recursion_available() functions.
+        def recursive_function(depth):
+            if depth:
+                recursive_function(depth - 1)
+
+        for max_depth in (5, 25, 250):
+            with support.infinite_recursion(max_depth):
+                available = support.get_recursion_available()
+
+                # Recursion up to 'available' additional frames should be OK.
+                recursive_function(available)
+
+                # Recursion up to 'available+1' additional frames must raise
+                # RecursionError. Avoid self.assertRaises(RecursionError) which
+                # can consume more than 3 frames and so raises RecursionError.
+                try:
+                    recursive_function(available + 1)
+                except RecursionError:
+                    pass
+                else:
+                    self.fail("RecursionError was not raised")
+
+        # Test the bare minimumum: max_depth=3
+        with support.infinite_recursion(3):
+            try:
+                recursive_function(3)
+            except RecursionError:
+                pass
+            else:
+                self.fail("RecursionError was not raised")
+
+    def test_parse_memlimit(self):
+        parse = support._parse_memlimit
+        KiB = 1024
+        MiB = KiB * 1024
+        GiB = MiB * 1024
+        TiB = GiB * 1024
+        self.assertEqual(parse('0k'), 0)
+        self.assertEqual(parse('3k'), 3 * KiB)
+        self.assertEqual(parse('2.4m'), int(2.4 * MiB))
+        self.assertEqual(parse('4g'), int(4 * GiB))
+        self.assertEqual(parse('1t'), TiB)
+
+        for limit in ('', '3', '3.5.10k', '10x'):
+            with self.subTest(limit=limit):
+                with self.assertRaises(ValueError):
+                    parse(limit)
+
+    def test_set_memlimit(self):
+        _4GiB = 4 * 1024 ** 3
+        TiB = 1024 ** 4
+        old_max_memuse = support.max_memuse
+        old_real_max_memuse = support.real_max_memuse
+        try:
+            if sys.maxsize > 2**32:
+                support.set_memlimit('4g')
+                self.assertEqual(support.max_memuse, _4GiB)
+                self.assertEqual(support.real_max_memuse, _4GiB)
+
+                big = 2**100 // TiB
+                support.set_memlimit(f'{big}t')
+                self.assertEqual(support.max_memuse, sys.maxsize)
+                self.assertEqual(support.real_max_memuse, big * TiB)
+            else:
+                support.set_memlimit('4g')
+                self.assertEqual(support.max_memuse, sys.maxsize)
+                self.assertEqual(support.real_max_memuse, _4GiB)
+        finally:
+            support.max_memuse = old_max_memuse
+            support.real_max_memuse = old_real_max_memuse
+
+    def test_copy_python_src_ignore(self):
+        # Get source directory
+        src_dir = sysconfig.get_config_var('abs_srcdir')
+        if not src_dir:
+            src_dir = sysconfig.get_config_var('srcdir')
+        src_dir = os.path.abspath(src_dir)
+
+        # Check that the source code is available
+        if not os.path.exists(src_dir):
+            self.skipTest(f"cannot access Python source code directory:"
+                          f" {src_dir!r}")
+        # Check that the landmark copy_python_src_ignore() expects is available
+        # (Previously we looked for 'Lib\os.py', which is always present on Windows.)
+        landmark = os.path.join(src_dir, 'Modules')
+        if not os.path.exists(landmark):
+            self.skipTest(f"cannot access Python source code directory:"
+                          f" {landmark!r} landmark is missing")
+
+        # Test support.copy_python_src_ignore()
+
+        # Source code directory
+        ignored = {'.git', '__pycache__'}
+        names = os.listdir(src_dir)
+        self.assertEqual(support.copy_python_src_ignore(src_dir, names),
+                         ignored | {'build'})
+
+        # Doc/ directory
+        path = os.path.join(src_dir, 'Doc')
+        self.assertEqual(support.copy_python_src_ignore(path, os.listdir(path)),
+                         ignored | {'build', 'venv'})
+
+        # Another directory
+        path = os.path.join(src_dir, 'Objects')
+        self.assertEqual(support.copy_python_src_ignore(path, os.listdir(path)),
+                         ignored)
+
     # XXX -follows a list of untested API
     # make_legacy_pyc
     # is_resource_enabled
@@ -698,12 +743,10 @@ def test_has_strftime_extensions(self):
     # EnvironmentVarGuard
     # transient_internet
     # run_with_locale
-    # set_memlimit
     # bigmemtest
     # precisionbigmemtest
     # bigaddrspacetest
     # requires_resource
-    # run_doctest
     # threading_cleanup
     # reap_threads
     # can_symlink
diff --git a/Lib/test/test_symtable.py b/Lib/test/test_symtable.py
index 25714aecda3a15..987e9e32afc325 100644
--- a/Lib/test/test_symtable.py
+++ b/Lib/test/test_symtable.py
@@ -4,6 +4,8 @@
 import symtable
 import unittest
 
+from test import support
+from test.support import os_helper
 
 
 TEST_CODE = """
@@ -40,6 +42,15 @@ def foo():
 
 def namespace_test(): pass
 def namespace_test(): pass
+
+type Alias = int
+type GenericAlias[T] = list[T]
+
+def generic_spam[T](a):
+    pass
+
+class GenericMine[T: int]:
+    pass
 """
 
 
@@ -59,6 +70,14 @@ class SymtableTest(unittest.TestCase):
     internal = find_block(spam, "internal")
     other_internal = find_block(spam, "other_internal")
     foo = find_block(top, "foo")
+    Alias = find_block(top, "Alias")
+    GenericAlias = find_block(top, "GenericAlias")
+    GenericAlias_inner = find_block(GenericAlias, "GenericAlias")
+    generic_spam = find_block(top, "generic_spam")
+    generic_spam_inner = find_block(generic_spam, "generic_spam")
+    GenericMine = find_block(top, "GenericMine")
+    GenericMine_inner = find_block(GenericMine, "GenericMine")
+    T = find_block(GenericMine, "T")
 
     def test_type(self):
         self.assertEqual(self.top.get_type(), "module")
@@ -66,6 +85,15 @@ def test_type(self):
         self.assertEqual(self.a_method.get_type(), "function")
         self.assertEqual(self.spam.get_type(), "function")
         self.assertEqual(self.internal.get_type(), "function")
+        self.assertEqual(self.foo.get_type(), "function")
+        self.assertEqual(self.Alias.get_type(), "type alias")
+        self.assertEqual(self.GenericAlias.get_type(), "type parameter")
+        self.assertEqual(self.GenericAlias_inner.get_type(), "type alias")
+        self.assertEqual(self.generic_spam.get_type(), "type parameter")
+        self.assertEqual(self.generic_spam_inner.get_type(), "function")
+        self.assertEqual(self.GenericMine.get_type(), "type parameter")
+        self.assertEqual(self.GenericMine_inner.get_type(), "class")
+        self.assertEqual(self.T.get_type(), "TypeVar bound")
 
     def test_id(self):
         self.assertGreater(self.top.get_id(), 0)
@@ -73,6 +101,11 @@ def test_id(self):
         self.assertGreater(self.a_method.get_id(), 0)
         self.assertGreater(self.spam.get_id(), 0)
         self.assertGreater(self.internal.get_id(), 0)
+        self.assertGreater(self.foo.get_id(), 0)
+        self.assertGreater(self.Alias.get_id(), 0)
+        self.assertGreater(self.GenericAlias.get_id(), 0)
+        self.assertGreater(self.generic_spam.get_id(), 0)
+        self.assertGreater(self.GenericMine.get_id(), 0)
 
     def test_optimized(self):
         self.assertFalse(self.top.is_optimized())
@@ -251,6 +284,62 @@ def test_symtable_repr(self):
         self.assertEqual(str(self.top), "<SymbolTable for module ?>")
         self.assertEqual(str(self.spam), "<Function SymbolTable for spam in ?>")
 
+    def test_symbol_repr(self):
+        self.assertEqual(repr(self.spam.lookup("glob")),
+                         "<symbol 'glob': GLOBAL_IMPLICIT, USE>")
+        self.assertEqual(repr(self.spam.lookup("bar")),
+                         "<symbol 'bar': GLOBAL_EXPLICIT, DEF_GLOBAL|DEF_LOCAL>")
+        self.assertEqual(repr(self.spam.lookup("a")),
+                         "<symbol 'a': LOCAL, DEF_PARAM>")
+        self.assertEqual(repr(self.spam.lookup("internal")),
+                         "<symbol 'internal': LOCAL, USE|DEF_LOCAL>")
+        self.assertEqual(repr(self.spam.lookup("other_internal")),
+                         "<symbol 'other_internal': LOCAL, DEF_LOCAL>")
+        self.assertEqual(repr(self.internal.lookup("x")),
+                         "<symbol 'x': FREE, USE>")
+        self.assertEqual(repr(self.other_internal.lookup("some_var")),
+                         "<symbol 'some_var': FREE, USE|DEF_NONLOCAL|DEF_LOCAL>")
+
+    def test_symtable_entry_repr(self):
+        expected = f"<symtable entry top({self.top.get_id()}), line {self.top.get_lineno()}>"
+        self.assertEqual(repr(self.top._table), expected)
+
+
+class CommandLineTest(unittest.TestCase):
+    maxDiff = None
+
+    def test_file(self):
+        filename = os_helper.TESTFN
+        self.addCleanup(os_helper.unlink, filename)
+        with open(filename, 'w') as f:
+            f.write(TEST_CODE)
+        with support.captured_stdout() as stdout:
+            symtable.main([filename])
+        out = stdout.getvalue()
+        self.assertIn('\n\n', out)
+        self.assertNotIn('\n\n\n', out)
+        lines = out.splitlines()
+        self.assertIn(f"symbol table for module from file {filename!r}:", lines)
+        self.assertIn("    local symbol 'glob': def_local", lines)
+        self.assertIn("        global_implicit symbol 'glob': use", lines)
+        self.assertIn("    local symbol 'spam': def_local", lines)
+        self.assertIn("    symbol table for function 'spam':", lines)
+
+    def test_stdin(self):
+        with support.captured_stdin() as stdin:
+            stdin.write(TEST_CODE)
+            stdin.seek(0)
+            with support.captured_stdout() as stdout:
+                symtable.main([])
+            out = stdout.getvalue()
+            stdin.seek(0)
+            with support.captured_stdout() as stdout:
+                symtable.main(['-'])
+            self.assertEqual(stdout.getvalue(), out)
+        lines = out.splitlines()
+        print(out)
+        self.assertIn("symbol table for module from file '<stdin>':", lines)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index f959bbb4400702..99433df73387d0 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -1004,11 +1004,26 @@
    Traceback (most recent call last):
    SyntaxError: expected ':'
 
+   >>> def f[T]()
+   ...     pass
+   Traceback (most recent call last):
+   SyntaxError: expected ':'
+
    >>> class A
    ...     pass
    Traceback (most recent call last):
    SyntaxError: expected ':'
 
+   >>> class A[T]
+   ...     pass
+   Traceback (most recent call last):
+   SyntaxError: expected ':'
+
+   >>> class A[T]()
+   ...     pass
+   Traceback (most recent call last):
+   SyntaxError: expected ':'
+
    >>> class R&D:
    ...     pass
    Traceback (most recent call last):
@@ -1446,11 +1461,21 @@
    Traceback (most recent call last):
    IndentationError: expected an indented block after function definition on line 1
 
+   >>> def foo[T](x, /, y, *, z=2):
+   ... pass
+   Traceback (most recent call last):
+   IndentationError: expected an indented block after function definition on line 1
+
    >>> class Blech(A):
    ... pass
    Traceback (most recent call last):
    IndentationError: expected an indented block after class definition on line 1
 
+   >>> class Blech[T](A):
+   ... pass
+   Traceback (most recent call last):
+   IndentationError: expected an indented block after class definition on line 1
+
    >>> match something:
    ... pass
    Traceback (most recent call last):
@@ -1621,6 +1646,22 @@
 Traceback (most recent call last):
 SyntaxError: Did you mean to use 'from ... import ...' instead?
 
+>>> import a, b,c from b
+Traceback (most recent call last):
+SyntaxError: Did you mean to use 'from ... import ...' instead?
+
+>>> import a.y.z, b.y.z, c.y.z from b.y.z
+Traceback (most recent call last):
+SyntaxError: Did you mean to use 'from ... import ...' instead?
+
+>>> import a,b,c from b as bar
+Traceback (most recent call last):
+SyntaxError: Did you mean to use 'from ... import ...' instead?
+
+>>> import a.y.z, b.y.z, c.y.z from b.y.z as bar
+Traceback (most recent call last):
+SyntaxError: Did you mean to use 'from ... import ...' instead?
+
 # Check that we dont raise the "trailing comma" error if there is more
 # input to the left of the valid part that we parsed.
 
@@ -1711,6 +1752,28 @@
     Traceback (most recent call last):
     SyntaxError: positional patterns follow keyword patterns
 
+Non-matching 'elif'/'else' statements:
+
+    >>> if a == b:
+    ...     ...
+    ...     elif a == c:
+    Traceback (most recent call last):
+    SyntaxError: 'elif' must match an if-statement here
+
+    >>> if x == y:
+    ...     ...
+    ...     else:
+    Traceback (most recent call last):
+    SyntaxError: 'else' must match a valid statement here
+
+    >>> elif m == n:
+    Traceback (most recent call last):
+    SyntaxError: 'elif' must match an if-statement here
+
+    >>> else:
+    Traceback (most recent call last):
+    SyntaxError: 'else' must match a valid statement here
+
 Uses of the star operator which should fail:
 
 A[:*b]
@@ -1877,6 +1940,79 @@ def f(x: *b)
         ^^^^^^^^^^^
    SyntaxError: bytes can only contain ASCII literal characters
 
+Invalid expressions in type scopes:
+
+   >>> type A[T: (x:=3)] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar bound
+
+   >>> type A[T: (yield 3)] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar bound
+
+   >>> type A[T: (await 3)] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: await expression cannot be used within a TypeVar bound
+
+   >>> type A[T: (yield from [])] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar bound
+
+   >>> type A = (x := 3)
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a type alias
+
+   >>> type A = (yield 3)
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a type alias
+
+   >>> type A = (await 3)
+   Traceback (most recent call last):
+      ...
+   SyntaxError: await expression cannot be used within a type alias
+
+   >>> type A = (yield from [])
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a type alias
+
+   >>> class A[T]((x := 3)): ...
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within the definition of a generic
+
+   >>> class A[T]((yield 3)): ...
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within the definition of a generic
+
+   >>> class A[T]((await 3)): ...
+   Traceback (most recent call last):
+      ...
+   SyntaxError: await expression cannot be used within the definition of a generic
+
+   >>> class A[T]((yield from [])): ...
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within the definition of a generic
+
+    >>> f(**x, *y)
+    Traceback (most recent call last):
+    SyntaxError: iterable argument unpacking follows keyword argument unpacking
+
+    >>> f(**x, *)
+    Traceback (most recent call last):
+    SyntaxError: iterable argument unpacking follows keyword argument unpacking
+
+    >>> f(x, *:)
+    Traceback (most recent call last):
+    SyntaxError: invalid syntax
 """
 
 import re
@@ -1892,8 +2028,8 @@ def _check_error(self, code, errtext,
                      lineno=None, offset=None, end_lineno=None, end_offset=None):
         """Check that compiling code raises SyntaxError with errtext.
 
-        errtest is a regular expression that must be present in the
-        test of the exception raised.  If subclass is specified it
+        errtext is a regular expression that must be present in the
+        test of the exception raised. If subclass is specified, it
         is the expected subclass of SyntaxError (e.g. IndentationError).
         """
         try:
@@ -1917,6 +2053,22 @@ def _check_error(self, code, errtext,
         else:
             self.fail("compile() did not raise SyntaxError")
 
+    def _check_noerror(self, code,
+                       errtext="compile() raised unexpected SyntaxError",
+                       filename="<testcase>", mode="exec", subclass=None):
+        """Check that compiling code does not raise a SyntaxError.
+
+        errtext is the message passed to self.fail if there is
+        a SyntaxError. If the subclass parameter is specified,
+        it is the subclass of SyntaxError (e.g. IndentationError)
+        that the raised error is checked against.
+        """
+        try:
+            compile(code, filename, mode)
+        except SyntaxError as err:
+            if (not subclass) or isinstance(err, subclass):
+                self.fail(errtext)
+
     def test_expression_with_assignment(self):
         self._check_error(
             "print(end1 + end2 = ' ')",
@@ -2182,15 +2334,26 @@ def test_error_parenthesis(self):
 """
         self._check_error(code, "parenthesis '\\)' does not match opening parenthesis '\\['")
 
+        # Examples with dencodings
+        s = b'# coding=latin\n(aaaaaaaaaaaaaaaaa\naaaaaaaaaaa\xb5'
+        self._check_error(s, "'\(' was never closed")
+
     def test_error_string_literal(self):
 
-        self._check_error("'blech", "unterminated string literal")
-        self._check_error('"blech', "unterminated string literal")
+        self._check_error("'blech", r"unterminated string literal \(.*\)$")
+        self._check_error('"blech', r"unterminated string literal \(.*\)$")
+        self._check_error(
+            r'"blech\"', r"unterminated string literal \(.*\); perhaps you escaped the end quote"
+        )
+        self._check_error(
+            r'r"blech\"', r"unterminated string literal \(.*\); perhaps you escaped the end quote"
+        )
         self._check_error("'''blech", "unterminated triple-quoted string literal")
         self._check_error('"""blech', "unterminated triple-quoted string literal")
 
     def test_invisible_characters(self):
         self._check_error('print\x17("Hello")', "invalid non-printable character")
+        self._check_error(b"with(0,,):\n\x01", "invalid non-printable character")
 
     def test_match_call_does_not_raise_syntax_error(self):
         code = """
@@ -2252,12 +2415,31 @@ def test_syntax_error_on_deeply_nested_blocks(self):
 """
         self._check_error(source, "too many statically nested blocks")
 
+    def test_syntax_error_non_matching_elif_else_statements(self):
+        # Check bpo-45759: 'elif' statements that doesn't match an
+        # if-statement or 'else' statements that doesn't match any
+        # valid else-able statement (e.g. 'while')
+        self._check_error(
+            "elif m == n:\n    ...",
+            "'elif' must match an if-statement here")
+        self._check_error(
+            "else:\n    ...",
+            "'else' must match a valid statement here")
+        self._check_noerror("if a == b:\n    ...\nelif a == c:\n    ...")
+        self._check_noerror("if x == y:\n    ...\nelse:\n    ...")
+        self._check_error(
+            "else = 123",
+            "invalid syntax")
+        self._check_error(
+            "elif 55 = 123",
+            "cannot assign to literal here")
+
     @support.cpython_only
     def test_error_on_parser_stack_overflow(self):
         source = "-" * 100000 + "4"
         for mode in ["exec", "eval", "single"]:
             with self.subTest(mode=mode):
-                with self.assertRaises(MemoryError):
+                with self.assertRaisesRegex(MemoryError, r"too complex"):
                     compile(source, "<string>", mode)
 
     @support.cpython_only
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index e1db450bf8a2ef..db5ba16c4d9739 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1,9 +1,11 @@
 import builtins
 import codecs
+import _datetime
 import gc
 import locale
 import operator
 import os
+import random
 import struct
 import subprocess
 import sys
@@ -14,14 +16,20 @@
 from test.support.script_helper import assert_python_ok, assert_python_failure
 from test.support import threading_helper
 from test.support import import_helper
+try:
+    from test.support import interpreters
+except ImportError:
+    interpreters = None
 import textwrap
 import unittest
 import warnings
 
 
-# count the number of test runs, used to create unique
-# strings to intern in test_intern()
-INTERN_NUMRUNS = 0
+def requires_subinterpreters(meth):
+    """Decorator to skip a test if subinterpreters are not supported."""
+    return unittest.skipIf(interpreters is None,
+                           'subinterpreters required')(meth)
+
 
 DICT_KEY_STRUCT_FORMAT = 'n2BI2n'
 
@@ -167,7 +175,8 @@ def test_excepthook_bytes_filename(self):
 
     def test_excepthook(self):
         with test.support.captured_output("stderr") as stderr:
-            sys.excepthook(1, '1', 1)
+            with test.support.catch_unraisable_exception():
+                sys.excepthook(1, '1', 1)
         self.assertTrue("TypeError: print_exception(): Exception expected for " \
                          "value, str found" in stderr.getvalue())
 
@@ -269,20 +278,29 @@ def test_switchinterval(self):
         finally:
             sys.setswitchinterval(orig)
 
-    def test_recursionlimit(self):
+    def test_getrecursionlimit(self):
+        limit = sys.getrecursionlimit()
+        self.assertIsInstance(limit, int)
+        self.assertGreater(limit, 1)
+
         self.assertRaises(TypeError, sys.getrecursionlimit, 42)
-        oldlimit = sys.getrecursionlimit()
-        self.assertRaises(TypeError, sys.setrecursionlimit)
-        self.assertRaises(ValueError, sys.setrecursionlimit, -42)
-        sys.setrecursionlimit(10000)
-        self.assertEqual(sys.getrecursionlimit(), 10000)
-        sys.setrecursionlimit(oldlimit)
+
+    def test_setrecursionlimit(self):
+        old_limit = sys.getrecursionlimit()
+        try:
+            sys.setrecursionlimit(10_005)
+            self.assertEqual(sys.getrecursionlimit(), 10_005)
+
+            self.assertRaises(TypeError, sys.setrecursionlimit)
+            self.assertRaises(ValueError, sys.setrecursionlimit, -42)
+        finally:
+            sys.setrecursionlimit(old_limit)
 
     def test_recursionlimit_recovery(self):
         if hasattr(sys, 'gettrace') and sys.gettrace():
             self.skipTest('fatal error if run with a trace function')
 
-        oldlimit = sys.getrecursionlimit()
+        old_limit = sys.getrecursionlimit()
         def f():
             f()
         try:
@@ -301,35 +319,31 @@ def f():
                 with self.assertRaises(RecursionError):
                     f()
         finally:
-            sys.setrecursionlimit(oldlimit)
+            sys.setrecursionlimit(old_limit)
 
     @test.support.cpython_only
-    def test_setrecursionlimit_recursion_depth(self):
+    def test_setrecursionlimit_to_depth(self):
         # Issue #25274: Setting a low recursion limit must be blocked if the
         # current recursion depth is already higher than limit.
 
-        from _testinternalcapi import get_recursion_depth
-
-        def set_recursion_limit_at_depth(depth, limit):
-            recursion_depth = get_recursion_depth()
-            if recursion_depth >= depth:
-                with self.assertRaises(RecursionError) as cm:
-                    sys.setrecursionlimit(limit)
-                self.assertRegex(str(cm.exception),
-                                 "cannot set the recursion limit to [0-9]+ "
-                                 "at the recursion depth [0-9]+: "
-                                 "the limit is too low")
-            else:
-                set_recursion_limit_at_depth(depth, limit)
-
-        oldlimit = sys.getrecursionlimit()
+        old_limit = sys.getrecursionlimit()
         try:
-            sys.setrecursionlimit(1000)
-
-            for limit in (10, 25, 50, 75, 100, 150, 200):
-                set_recursion_limit_at_depth(limit, limit)
+            depth = support.get_recursion_depth()
+            with self.subTest(limit=sys.getrecursionlimit(), depth=depth):
+                # depth + 1 is OK
+                sys.setrecursionlimit(depth + 1)
+
+                # reset the limit to be able to call self.assertRaises()
+                # context manager
+                sys.setrecursionlimit(old_limit)
+                with self.assertRaises(RecursionError) as cm:
+                    sys.setrecursionlimit(depth)
+            self.assertRegex(str(cm.exception),
+                             "cannot set the recursion limit to [0-9]+ "
+                             "at the recursion depth [0-9]+: "
+                             "the limit is too low")
         finally:
-            sys.setrecursionlimit(oldlimit)
+            sys.setrecursionlimit(old_limit)
 
     def test_getwindowsversion(self):
         # Raise SkipTest if sys doesn't have getwindowsversion attribute
@@ -497,7 +511,7 @@ def test_current_exceptions(self):
         # Spawn a thread that blocks at a known place.  Then the main
         # thread does sys._current_frames(), and verifies that the frames
         # returned make sense.
-        entered_g = threading.Event()
+        g_raised = threading.Event()
         leave_g = threading.Event()
         thread_info = []  # the thread's id
 
@@ -506,22 +520,19 @@ def f123():
 
         def g456():
             thread_info.append(threading.get_ident())
-            entered_g.set()
             while True:
                 try:
                     raise ValueError("oops")
                 except ValueError:
+                    g_raised.set()
                     if leave_g.wait(timeout=support.LONG_TIMEOUT):
                         break
 
         t = threading.Thread(target=f123)
         t.start()
-        entered_g.wait()
+        g_raised.wait(timeout=support.LONG_TIMEOUT)
 
         try:
-            # At this point, t has finished its entered_g.set(), although it's
-            # impossible to guess whether it's still on that line or has moved on
-            # to its leave_g.wait().
             self.assertEqual(len(thread_info), 1)
             thread_id = thread_info[0]
 
@@ -680,13 +691,23 @@ def test_43581(self):
         self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding)
 
     def test_intern(self):
-        global INTERN_NUMRUNS
-        INTERN_NUMRUNS += 1
+        has_is_interned = (test.support.check_impl_detail(cpython=True)
+                           or hasattr(sys, '_is_interned'))
         self.assertRaises(TypeError, sys.intern)
-        s = "never interned before" + str(INTERN_NUMRUNS)
+        self.assertRaises(TypeError, sys.intern, b'abc')
+        if has_is_interned:
+            self.assertRaises(TypeError, sys._is_interned)
+            self.assertRaises(TypeError, sys._is_interned, b'abc')
+        s = "never interned before" + str(random.randrange(0, 10**9))
         self.assertTrue(sys.intern(s) is s)
+        if has_is_interned:
+            self.assertIs(sys._is_interned(s), True)
         s2 = s.swapcase().swapcase()
+        if has_is_interned:
+            self.assertIs(sys._is_interned(s2), False)
         self.assertTrue(sys.intern(s2) is s)
+        if has_is_interned:
+            self.assertIs(sys._is_interned(s2), False)
 
         # Subclasses of string can't be interned, because they
         # provide too much opportunity for insane things to happen.
@@ -698,6 +719,36 @@ def __hash__(self):
                 return 123
 
         self.assertRaises(TypeError, sys.intern, S("abc"))
+        if has_is_interned:
+            self.assertIs(sys._is_interned(S("abc")), False)
+
+    @requires_subinterpreters
+    def test_subinterp_intern_dynamically_allocated(self):
+        s = "never interned before" + str(random.randrange(0, 10**9))
+        t = sys.intern(s)
+        self.assertIs(t, s)
+
+        interp = interpreters.create()
+        interp.run(textwrap.dedent(f'''
+            import sys
+            t = sys.intern({s!r})
+            assert id(t) != {id(s)}, (id(t), {id(s)})
+            assert id(t) != {id(t)}, (id(t), {id(t)})
+            '''))
+
+    @requires_subinterpreters
+    def test_subinterp_intern_statically_allocated(self):
+        # See Tools/build/generate_global_objects.py for the list
+        # of strings that are always statically allocated.
+        s = '__init__'
+        t = sys.intern(s)
+
+        interp = interpreters.create()
+        interp.run(textwrap.dedent(f'''
+            import sys
+            t = sys.intern({s!r})
+            assert id(t) == {id(t)}, (id(t), {id(t)})
+            '''))
 
     def test_sys_flags(self):
         self.assertTrue(sys.flags)
@@ -960,12 +1011,12 @@ def test_debugmallocstats(self):
                          "sys.getallocatedblocks unavailable on this build")
     def test_getallocatedblocks(self):
         try:
-            import _testcapi
+            import _testinternalcapi
         except ImportError:
             with_pymalloc = support.with_pymalloc()
         else:
             try:
-                alloc_name = _testcapi.pymem_getallocatorsname()
+                alloc_name = _testinternalcapi.pymem_getallocatorsname()
             except RuntimeError as exc:
                 # "cannot get allocators name" (ex: tracemalloc is used)
                 with_pymalloc = True
@@ -1077,14 +1128,20 @@ def check(tracebacklimit, expected):
         traceback = [
             b'Traceback (most recent call last):',
             b'  File "<string>", line 8, in <module>',
+            b'    f2()',
+            b'    ~~^^',
             b'  File "<string>", line 6, in f2',
+            b'    f1()',
+            b'    ~~^^',
             b'  File "<string>", line 4, in f1',
+            b'    1 / 0',
+            b'    ~~^~~',
             b'ZeroDivisionError: division by zero'
         ]
         check(10, traceback)
         check(3, traceback)
-        check(2, traceback[:1] + traceback[2:])
-        check(1, traceback[:1] + traceback[3:])
+        check(2, traceback[:1] + traceback[4:])
+        check(1, traceback[:1] + traceback[7:])
         check(0, [traceback[-1]])
         check(-1, [traceback[-1]])
         check(1<<1000, traceback)
@@ -1134,41 +1191,76 @@ def test_stdlib_dir(self):
         self.assertEqual(os.path.normpath(sys._stdlib_dir),
                          os.path.normpath(expected))
 
+    @unittest.skipUnless(hasattr(sys, 'getobjects'), 'need sys.getobjects()')
+    def test_getobjects(self):
+        # sys.getobjects(0)
+        all_objects = sys.getobjects(0)
+        self.assertIsInstance(all_objects, list)
+        self.assertGreater(len(all_objects), 0)
+
+        # sys.getobjects(0, MyType)
+        class MyType:
+            pass
+        size = 100
+        my_objects = [MyType() for _ in range(size)]
+        get_objects = sys.getobjects(0, MyType)
+        self.assertEqual(len(get_objects), size)
+        for obj in get_objects:
+            self.assertIsInstance(obj, MyType)
+
+        # sys.getobjects(3, MyType)
+        get_objects = sys.getobjects(3, MyType)
+        self.assertEqual(len(get_objects), 3)
+
+    @unittest.skipUnless(hasattr(sys, '_stats_on'), 'need Py_STATS build')
+    def test_pystats(self):
+        # Call the functions, just check that they don't crash
+        # Cannot save/restore state.
+        sys._stats_on()
+        sys._stats_off()
+        sys._stats_clear()
+        sys._stats_dump()
+
+    @test.support.cpython_only
+    @unittest.skipUnless(hasattr(sys, 'abiflags'), 'need sys.abiflags')
+    def test_disable_gil_abi(self):
+        self.assertEqual('t' in sys.abiflags, support.Py_GIL_DISABLED)
+
 
 @test.support.cpython_only
 class UnraisableHookTest(unittest.TestCase):
-    def write_unraisable_exc(self, exc, err_msg, obj):
-        import _testcapi
-        import types
-        err_msg2 = f"Exception ignored {err_msg}"
-        try:
-            _testcapi.write_unraisable_exc(exc, err_msg, obj)
-            return types.SimpleNamespace(exc_type=type(exc),
-                                         exc_value=exc,
-                                         exc_traceback=exc.__traceback__,
-                                         err_msg=err_msg2,
-                                         object=obj)
-        finally:
-            # Explicitly break any reference cycle
-            exc = None
-
     def test_original_unraisablehook(self):
-        for err_msg in (None, "original hook"):
-            with self.subTest(err_msg=err_msg):
-                obj = "an object"
-
-                with test.support.captured_output("stderr") as stderr:
-                    with test.support.swap_attr(sys, 'unraisablehook',
-                                                sys.__unraisablehook__):
-                        self.write_unraisable_exc(ValueError(42), err_msg, obj)
-
-                err = stderr.getvalue()
-                if err_msg is not None:
-                    self.assertIn(f'Exception ignored {err_msg}: {obj!r}\n', err)
-                else:
-                    self.assertIn(f'Exception ignored in: {obj!r}\n', err)
-                self.assertIn('Traceback (most recent call last):\n', err)
-                self.assertIn('ValueError: 42\n', err)
+        _testcapi = import_helper.import_module('_testcapi')
+        from _testcapi import err_writeunraisable, err_formatunraisable
+        obj = hex
+
+        with support.swap_attr(sys, 'unraisablehook',
+                                    sys.__unraisablehook__):
+            with support.captured_stderr() as stderr:
+                err_writeunraisable(ValueError(42), obj)
+            lines = stderr.getvalue().splitlines()
+            self.assertEqual(lines[0], f'Exception ignored in: {obj!r}')
+            self.assertEqual(lines[1], 'Traceback (most recent call last):')
+            self.assertEqual(lines[-1], 'ValueError: 42')
+
+            with support.captured_stderr() as stderr:
+                err_writeunraisable(ValueError(42), None)
+            lines = stderr.getvalue().splitlines()
+            self.assertEqual(lines[0], 'Traceback (most recent call last):')
+            self.assertEqual(lines[-1], 'ValueError: 42')
+
+            with support.captured_stderr() as stderr:
+                err_formatunraisable(ValueError(42), 'Error in %R', obj)
+            lines = stderr.getvalue().splitlines()
+            self.assertEqual(lines[0], f'Error in {obj!r}:')
+            self.assertEqual(lines[1], 'Traceback (most recent call last):')
+            self.assertEqual(lines[-1], 'ValueError: 42')
+
+            with support.captured_stderr() as stderr:
+                err_formatunraisable(ValueError(42), None)
+            lines = stderr.getvalue().splitlines()
+            self.assertEqual(lines[0], 'Traceback (most recent call last):')
+            self.assertEqual(lines[-1], 'ValueError: 42')
 
     def test_original_unraisablehook_err(self):
         # bpo-22836: PyErr_WriteUnraisable() should give sensible reports
@@ -1215,6 +1307,8 @@ def test_original_unraisablehook_exception_qualname(self):
         # Check that the exception is printed with its qualified name
         # rather than just classname, and the module names appears
         # unless it is one of the hard-coded exclusions.
+        _testcapi = import_helper.import_module('_testcapi')
+        from _testcapi import err_writeunraisable
         class A:
             class B:
                 class X(Exception):
@@ -1226,9 +1320,7 @@ class X(Exception):
                 with test.support.captured_stderr() as stderr, test.support.swap_attr(
                     sys, 'unraisablehook', sys.__unraisablehook__
                 ):
-                    expected = self.write_unraisable_exc(
-                        A.B.X(), "msg", "obj"
-                    )
+                    err_writeunraisable(A.B.X(), "obj")
                 report = stderr.getvalue()
                 self.assertIn(A.B.X.__qualname__, report)
                 if moduleName in ['builtins', '__main__']:
@@ -1244,34 +1336,45 @@ def test_original_unraisablehook_wrong_type(self):
                 sys.unraisablehook(exc)
 
     def test_custom_unraisablehook(self):
+        _testcapi = import_helper.import_module('_testcapi')
+        from _testcapi import err_writeunraisable, err_formatunraisable
         hook_args = None
 
         def hook_func(args):
             nonlocal hook_args
             hook_args = args
 
-        obj = object()
+        obj = hex
         try:
             with test.support.swap_attr(sys, 'unraisablehook', hook_func):
-                expected = self.write_unraisable_exc(ValueError(42),
-                                                     "custom hook", obj)
-                for attr in "exc_type exc_value exc_traceback err_msg object".split():
-                    self.assertEqual(getattr(hook_args, attr),
-                                     getattr(expected, attr),
-                                     (hook_args, expected))
+                exc = ValueError(42)
+                err_writeunraisable(exc, obj)
+                self.assertIs(hook_args.exc_type, type(exc))
+                self.assertIs(hook_args.exc_value, exc)
+                self.assertIs(hook_args.exc_traceback, exc.__traceback__)
+                self.assertIsNone(hook_args.err_msg)
+                self.assertEqual(hook_args.object, obj)
+
+                err_formatunraisable(exc, "custom hook %R", obj)
+                self.assertIs(hook_args.exc_type, type(exc))
+                self.assertIs(hook_args.exc_value, exc)
+                self.assertIs(hook_args.exc_traceback, exc.__traceback__)
+                self.assertEqual(hook_args.err_msg, f'custom hook {obj!r}')
+                self.assertIsNone(hook_args.object)
         finally:
             # expected and hook_args contain an exception: break reference cycle
             expected = None
             hook_args = None
 
     def test_custom_unraisablehook_fail(self):
+        _testcapi = import_helper.import_module('_testcapi')
+        from _testcapi import err_writeunraisable
         def hook_func(*args):
             raise Exception("hook_func failed")
 
         with test.support.captured_output("stderr") as stderr:
             with test.support.swap_attr(sys, 'unraisablehook', hook_func):
-                self.write_unraisable_exc(ValueError(42),
-                                          "custom hook fail", None)
+                err_writeunraisable(ValueError(42), "custom hook fail")
 
         err = stderr.getvalue()
         self.assertIn(f'Exception ignored in sys.unraisablehook: '
@@ -1449,7 +1552,7 @@ def func():
         check(x, size('3Pi3c7P2ic??2P'))
         # function
         def func(): pass
-        check(func, size('14Pi'))
+        check(func, size('15Pi'))
         class c():
             @staticmethod
             def foo():
@@ -1506,7 +1609,7 @@ def delx(self): del self.__x
             x = property(getx, setx, delx, "")
             check(x, size('5Pi'))
         # PyCapsule
-        # XXX
+        check(_datetime.datetime_CAPI, size('6P'))
         # rangeiterator
         check(iter(range(1)), size('3l'))
         check(iter(range(2**65)), size('3P'))
@@ -1557,7 +1660,7 @@ def delx(self): del self.__x
                   '10P'                 # PySequenceMethods
                   '2P'                  # PyBufferProcs
                   '6P'
-                  '1PI'                 # Specializer cache
+                  '1PIP'                 # Specializer cache
                   )
         class newstyleclass(object): pass
         # Separate block for PyDictKeysObject with 8 keys and 5 entries
diff --git a/Lib/test/test_sys_setprofile.py b/Lib/test/test_sys_setprofile.py
index 49e076c77d167a..32e03d7cd25dbe 100644
--- a/Lib/test/test_sys_setprofile.py
+++ b/Lib/test/test_sys_setprofile.py
@@ -30,9 +30,9 @@ def callback(self, frame, event, arg):
         if (event == "call"
             or event == "return"
             or event == "exception"):
-            self.add_event(event, frame)
+            self.add_event(event, frame, arg)
 
-    def add_event(self, event, frame=None):
+    def add_event(self, event, frame=None, arg=None):
         """Add an event to the log."""
         if frame is None:
             frame = sys._getframe(1)
@@ -43,7 +43,7 @@ def add_event(self, event, frame=None):
             frameno = len(self.frames)
             self.frames.append(frame)
 
-        self.events.append((frameno, event, ident(frame)))
+        self.events.append((frameno, event, ident(frame), arg))
 
     def get_events(self):
         """Remove calls to add_event()."""
@@ -89,11 +89,16 @@ def trace_pass(self, frame):
 
 
 class TestCaseBase(unittest.TestCase):
-    def check_events(self, callable, expected):
+    def check_events(self, callable, expected, check_args=False):
         events = capture_events(callable, self.new_watcher())
-        if events != expected:
-            self.fail("Expected events:\n%s\nReceived events:\n%s"
-                      % (pprint.pformat(expected), pprint.pformat(events)))
+        if check_args:
+            if events != expected:
+                self.fail("Expected events:\n%s\nReceived events:\n%s"
+                          % (pprint.pformat(expected), pprint.pformat(events)))
+        else:
+            if [(frameno, event, ident) for frameno, event, ident, arg in events] != expected:
+                self.fail("Expected events:\n%s\nReceived events:\n%s"
+                          % (pprint.pformat(expected), pprint.pformat(events)))
 
 
 class ProfileHookTestCase(TestCaseBase):
@@ -255,6 +260,21 @@ def g(p):
                               (1, 'return', g_ident),
                               ])
 
+    def test_unfinished_generator(self):
+        def f():
+            for i in range(2):
+                yield i
+        def g(p):
+            next(f())
+
+        f_ident = ident(f)
+        g_ident = ident(g)
+        self.check_events(g, [(1, 'call', g_ident, None),
+                              (2, 'call', f_ident, None),
+                              (2, 'return', f_ident, 0),
+                              (1, 'return', g_ident, None),
+                              ], check_args=True)
+
     def test_stop_iteration(self):
         def f():
             for i in range(2):
@@ -439,7 +459,6 @@ def __del__(self):
         sys.setprofile(foo)
         self.assertEqual(sys.getprofile(), bar)
 
-
     def test_same_object(self):
         def foo(*args):
             ...
@@ -448,6 +467,18 @@ def foo(*args):
         del foo
         sys.setprofile(sys.getprofile())
 
+    def test_profile_after_trace_opcodes(self):
+        def f():
+            ...
+
+        sys._getframe().f_trace_opcodes = True
+        prev_trace = sys.gettrace()
+        sys.settrace(lambda *args: None)
+        f()
+        sys.settrace(prev_trace)
+        sys.setprofile(lambda *args: None)
+        f()
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_sys_settrace.py b/Lib/test/test_sys_settrace.py
index 4411603af18cd3..fc5ca72236b1fb 100644
--- a/Lib/test/test_sys_settrace.py
+++ b/Lib/test/test_sys_settrace.py
@@ -8,6 +8,16 @@
 from functools import wraps
 import asyncio
 from test.support import import_helper
+import contextlib
+import os
+import tempfile
+import textwrap
+import subprocess
+import warnings
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = None
 
 support.requires_working_socket(module=True)
 
@@ -40,6 +50,20 @@ async def asynciter(iterable):
     for x in iterable:
         yield x
 
+def clean_asynciter(test):
+    @wraps(test)
+    async def wrapper(*args, **kwargs):
+        cleanups = []
+        def wrapped_asynciter(iterable):
+            it = asynciter(iterable)
+            cleanups.append(it.aclose)
+            return it
+        try:
+            return await test(*args, **kwargs, asynciter=wrapped_asynciter)
+        finally:
+            while cleanups:
+                await cleanups.pop()()
+    return wrapper
 
 # A very basic example.  If this fails, we're in deep trouble.
 def basic():
@@ -302,6 +326,13 @@ def generator_example():
                             [(5, 'line'), (5, 'return')])
 
 
+def lineno_matches_lasti(frame):
+    last_line = None
+    for start, end, line in frame.f_code.co_lines():
+        if start <= frame.f_lasti < end:
+            last_line = line
+    return last_line == frame.f_lineno
+
 class Tracer:
     def __init__(self, trace_line_events=None, trace_opcode_events=None):
         self.trace_line_events = trace_line_events
@@ -315,6 +346,7 @@ def _reconfigure_frame(self, frame):
             frame.f_trace_opcodes = self.trace_opcode_events
 
     def trace(self, frame, event, arg):
+        assert lineno_matches_lasti(frame)
         self._reconfigure_frame(frame)
         self.events.append((frame.f_lineno, event))
         return self.trace
@@ -906,6 +938,35 @@ def func():
              (6, 'line'),
              (6, 'return')])
 
+    def test_finally_with_conditional(self):
+
+        # See gh-105658
+        condition = True
+        def func():
+            try:
+                try:
+                    raise Exception
+                finally:
+                    if condition:
+                        result = 1
+                result = 2
+            except:
+                result = 3
+            return result
+
+        self.run_and_compare(func,
+            [(0, 'call'),
+             (1, 'line'),
+             (2, 'line'),
+             (3, 'line'),
+             (3, 'exception'),
+             (5, 'line'),
+             (6, 'line'),
+             (8, 'line'),
+             (9, 'line'),
+             (10, 'line'),
+             (10, 'return')])
+
     def test_break_to_continue1(self):
 
         def func():
@@ -1524,6 +1585,52 @@ def __init__(self):
              (3, 'return'),
              (1, 'return')])
 
+    def test_class_creation_with_decorator(self):
+        def func():
+            def decorator(arg):
+                def _dec(c):
+                    return c
+                return _dec
+
+            @decorator(6)
+            @decorator(
+                len([8]),
+            )
+            class MyObject:
+                pass
+
+        self.run_and_compare(func, [
+            (0, 'call'),
+            (1, 'line'),
+            (6, 'line'),
+            (1, 'call'),
+            (2, 'line'),
+            (4, 'line'),
+            (4, 'return'),
+            (7, 'line'),
+            (8, 'line'),
+            (7, 'line'),
+            (1, 'call'),
+            (2, 'line'),
+            (4, 'line'),
+            (4, 'return'),
+            (10, 'line'),
+            (6, 'call'),
+            (6, 'line'),
+            (11, 'line'),
+            (11, 'return'),
+            (7, 'line'),
+            (2, 'call'),
+            (3, 'line'),
+            (3, 'return'),
+            (6, 'line'),
+            (2, 'call'),
+            (3, 'line'),
+            (3, 'return'),
+            (10, 'line'),
+            (10, 'return'),
+        ])
+
     @support.cpython_only
     def test_no_line_event_after_creating_generator(self):
         # Spurious line events before call events only show up with C tracer
@@ -1568,6 +1675,83 @@ def func():
 
         self.run_and_compare(func, EXPECTED_EVENTS)
 
+    def test_correct_tracing_quickened_call_class_init(self):
+
+        class C:
+            def __init__(self):
+                self
+
+        def func():
+            C()
+
+        EXPECTED_EVENTS = [
+            (0, 'call'),
+            (1, 'line'),
+            (-3, 'call'),
+            (-2, 'line'),
+            (-2, 'return'),
+            (1, 'return')]
+
+        self.run_and_compare(func, EXPECTED_EVENTS)
+        # Quicken
+        for _ in range(100):
+            func()
+        self.run_and_compare(func, EXPECTED_EVENTS)
+
+    def test_settrace_error(self):
+        raised = False
+        def error_once(frame, event, arg):
+            nonlocal raised
+            if not raised:
+                raised = True
+                raise Exception
+            return error
+
+        try:
+            sys._getframe().f_trace = error_once
+            sys.settrace(error_once)
+            len([])
+        except Exception as ex:
+            count = 0
+            tb = ex.__traceback__
+            while tb:
+                if tb.tb_frame.f_code.co_name == "test_settrace_error":
+                    count += 1
+                tb = tb.tb_next
+            if count == 0:
+                self.fail("Traceback is missing frame")
+            elif count > 1:
+                self.fail("Traceback has frame more than once")
+        else:
+            self.fail("No exception raised")
+        finally:
+            sys.settrace(None)
+
+    @support.cpython_only
+    def test_testcapi_settrace_error(self):
+
+        # Skip this test if the _testcapi module isn't available.
+        _testcapi = import_helper.import_module('_testcapi')
+
+        try:
+            _testcapi.settrace_to_error([])
+            len([])
+        except Exception as ex:
+            count = 0
+            tb = ex.__traceback__
+            while tb:
+                if tb.tb_frame.f_code.co_name == "test_testcapi_settrace_error":
+                    count += 1
+                tb = tb.tb_next
+            if count == 0:
+                self.fail("Traceback is missing frame")
+            elif count > 1:
+                self.fail("Traceback has frame more than once")
+        else:
+            self.fail("No exception raised")
+        finally:
+            sys.settrace(None)
+
     def test_very_large_function(self):
         # There is a separate code path when the number of lines > (1 << 15).
         d = {}
@@ -1626,6 +1810,39 @@ def compare_events(self, line_offset, events, expected_events):
     def make_tracer():
         return Tracer(trace_opcode_events=True)
 
+    def test_trace_opcodes_after_settrace(self):
+        """Make sure setting f_trace_opcodes after starting trace works even
+        if it's the first time f_trace_opcodes is being set. GH-103615"""
+
+        code = textwrap.dedent("""
+            import sys
+
+            def opcode_trace_func(frame, event, arg):
+                if event == "opcode":
+                    print("opcode trace triggered")
+                return opcode_trace_func
+
+            sys.settrace(opcode_trace_func)
+            sys._getframe().f_trace = opcode_trace_func
+            sys._getframe().f_trace_opcodes = True
+            a = 1
+        """)
+
+        # We can't use context manager because Windows can't execute a file while
+        # it's being written
+        tmp = tempfile.NamedTemporaryFile(delete=False, suffix='.py')
+        tmp.write(code.encode('utf-8'))
+        tmp.close()
+        try:
+            p = subprocess.Popen([sys.executable, tmp.name], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            p.wait()
+            out = p.stdout.read()
+        finally:
+            os.remove(tmp.name)
+            p.stdout.close()
+            p.stderr.close()
+        self.assertIn(b"opcode trace triggered", out)
+
 
 class RaisingTraceFuncTestCase(unittest.TestCase):
     def setUp(self):
@@ -1752,6 +1969,7 @@ def __init__(self, function, jumpFrom, jumpTo, event='line',
     def trace(self, frame, event, arg):
         if self.done:
             return
+        assert lineno_matches_lasti(frame)
         # frame.f_code.co_firstlineno is the first line of the decorator when
         # 'function' is decorated and the decorator may be written using
         # multiple physical lines when it is too long. Use the first line
@@ -1798,6 +2016,8 @@ def no_jump_without_trace_function():
 
 
 class JumpTestCase(unittest.TestCase):
+    unbound_locals = r"assigning None to [0-9]+ unbound local"
+
     def setUp(self):
         self.addCleanup(sys.settrace, sys.gettrace())
         sys.settrace(None)
@@ -1809,33 +2029,50 @@ def compare_jump_output(self, expected, received):
                        "Received: " + repr(received))
 
     def run_test(self, func, jumpFrom, jumpTo, expected, error=None,
-                 event='line', decorated=False):
-        tracer = JumpTracer(func, jumpFrom, jumpTo, event, decorated)
+                 event='line', decorated=False, warning=None):
+        wrapped = func
+        while hasattr(wrapped, '__wrapped__'):
+            wrapped = wrapped.__wrapped__
+
+        tracer = JumpTracer(wrapped, jumpFrom, jumpTo, event, decorated)
         sys.settrace(tracer.trace)
         output = []
-        if error is None:
+
+        with contextlib.ExitStack() as stack:
+            if error is not None:
+                stack.enter_context(self.assertRaisesRegex(*error))
+            if warning is not None:
+                stack.enter_context(self.assertWarnsRegex(*warning))
+            else:
+                stack.enter_context(warnings.catch_warnings())
+                warnings.simplefilter('error')
             func(output)
-        else:
-            with self.assertRaisesRegex(*error):
-                func(output)
+
         sys.settrace(None)
         self.compare_jump_output(expected, output)
 
     def run_async_test(self, func, jumpFrom, jumpTo, expected, error=None,
-                 event='line', decorated=False):
-        tracer = JumpTracer(func, jumpFrom, jumpTo, event, decorated)
+                 event='line', decorated=False, warning=None):
+        wrapped = func
+        while hasattr(wrapped, '__wrapped__'):
+            wrapped = wrapped.__wrapped__
+
+        tracer = JumpTracer(wrapped, jumpFrom, jumpTo, event, decorated)
         sys.settrace(tracer.trace)
         output = []
-        if error is None:
+
+        with contextlib.ExitStack() as stack:
+            if error is not None:
+                stack.enter_context(self.assertRaisesRegex(*error))
+            if warning is not None:
+                stack.enter_context(self.assertWarnsRegex(*warning))
             asyncio.run(func(output))
-        else:
-            with self.assertRaisesRegex(*error):
-                asyncio.run(func(output))
+
         sys.settrace(None)
         asyncio.set_event_loop_policy(None)
         self.compare_jump_output(expected, output)
 
-    def jump_test(jumpFrom, jumpTo, expected, error=None, event='line'):
+    def jump_test(jumpFrom, jumpTo, expected, error=None, event='line', warning=None):
         """Decorator that creates a test that makes a jump
         from one place to another in the following code.
         """
@@ -1843,11 +2080,11 @@ def decorator(func):
             @wraps(func)
             def test(self):
                 self.run_test(func, jumpFrom, jumpTo, expected,
-                              error=error, event=event, decorated=True)
+                              error=error, event=event, decorated=True, warning=warning)
             return test
         return decorator
 
-    def async_jump_test(jumpFrom, jumpTo, expected, error=None, event='line'):
+    def async_jump_test(jumpFrom, jumpTo, expected, error=None, event='line', warning=None):
         """Decorator that creates a test that makes a jump
         from one place to another in the following asynchronous code.
         """
@@ -1855,7 +2092,7 @@ def decorator(func):
             @wraps(func)
             def test(self):
                 self.run_async_test(func, jumpFrom, jumpTo, expected,
-                              error=error, event=event, decorated=True)
+                              error=error, event=event, decorated=True, warning=warning)
             return test
         return decorator
 
@@ -1872,7 +2109,41 @@ def test_jump_simple_backwards(output):
         output.append(1)
         output.append(2)
 
-    @jump_test(3, 5, [2, 5])
+    @jump_test(1, 4, [5], warning=(RuntimeWarning, unbound_locals))
+    def test_jump_is_none_forwards(output):
+        x = None
+        if x is None:
+            output.append(3)
+        else:
+            output.append(5)
+
+    @jump_test(6, 5, [3, 5, 6])
+    def test_jump_is_none_backwards(output):
+        x = None
+        if x is None:
+            output.append(3)
+        else:
+            output.append(5)
+        output.append(6)
+
+    @jump_test(2, 4, [5])
+    def test_jump_is_not_none_forwards(output):
+        x = None
+        if x is not None:
+            output.append(3)
+        else:
+            output.append(5)
+
+    @jump_test(6, 5, [5, 5, 6])
+    def test_jump_is_not_none_backwards(output):
+        x = None
+        if x is not None:
+            output.append(3)
+        else:
+            output.append(5)
+        output.append(6)
+
+    @jump_test(3, 5, [2, 5], warning=(RuntimeWarning, unbound_locals))
     def test_jump_out_of_block_forwards(output):
         for i in 1, 2:
             output.append(2)
@@ -1891,7 +2162,8 @@ def test_jump_out_of_block_backwards(output):
         output.append(7)
 
     @async_jump_test(4, 5, [3, 5])
-    async def test_jump_out_of_async_for_block_forwards(output):
+    @clean_asynciter
+    async def test_jump_out_of_async_for_block_forwards(output, asynciter):
         for i in [1]:
             async for i in asynciter([1, 2]):
                 output.append(3)
@@ -1899,7 +2171,8 @@ async def test_jump_out_of_async_for_block_forwards(output):
             output.append(5)
 
     @async_jump_test(5, 2, [2, 4, 2, 4, 5, 6])
-    async def test_jump_out_of_async_for_block_backwards(output):
+    @clean_asynciter
+    async def test_jump_out_of_async_for_block_backwards(output, asynciter):
         for i in [1]:
             output.append(2)
             async for i in asynciter([1]):
@@ -1958,7 +2231,7 @@ def test_jump_in_nested_finally_3(output):
             output.append(11)
         output.append(12)
 
-    @jump_test(5, 11, [2, 4], (ValueError, 'exception'))
+    @jump_test(5, 11, [2, 4], (ValueError, 'comes after the current code block'))
     def test_no_jump_over_return_try_finally_in_finally_block(output):
         try:
             output.append(2)
@@ -2086,7 +2359,7 @@ def test_jump_within_except_block(output):
             output.append(6)
         output.append(7)
 
-    @jump_test(6, 1, [1, 5, 1, 5])
+    @jump_test(6, 1, [1, 5, 1, 5], warning=(RuntimeWarning, unbound_locals))
     def test_jump_over_try_except(output):
         output.append(1)
         try:
@@ -2182,7 +2455,7 @@ def test_jump_out_of_complex_nested_blocks(output):
             output.append(11)
         output.append(12)
 
-    @jump_test(3, 5, [1, 2, 5])
+    @jump_test(3, 5, [1, 2, 5], warning=(RuntimeWarning, unbound_locals))
     def test_jump_out_of_with_assignment(output):
         output.append(1)
         with tracecontext(output, 2) \
@@ -2190,7 +2463,7 @@ def test_jump_out_of_with_assignment(output):
             output.append(4)
         output.append(5)
 
-    @async_jump_test(3, 5, [1, 2, 5])
+    @async_jump_test(3, 5, [1, 2, 5], warning=(RuntimeWarning, unbound_locals))
     async def test_jump_out_of_async_with_assignment(output):
         output.append(1)
         async with asynctracecontext(output, 2) \
@@ -2226,7 +2499,7 @@ def test_jump_over_break_in_try_finally_block(output):
             break
         output.append(13)
 
-    @jump_test(1, 7, [7, 8])
+    @jump_test(1, 7, [7, 8], warning=(RuntimeWarning, unbound_locals))
     def test_jump_over_for_block_before_else(output):
         output.append(1)
         if not output:  # always false
@@ -2237,7 +2510,7 @@ def test_jump_over_for_block_before_else(output):
             output.append(7)
         output.append(8)
 
-    @async_jump_test(1, 7, [7, 8])
+    @async_jump_test(1, 7, [7, 8], warning=(RuntimeWarning, unbound_locals))
     async def test_jump_over_async_for_block_before_else(output):
         output.append(1)
         if not output:  # always false
@@ -2312,6 +2585,7 @@ def test_no_jump_backwards_into_for_block(output):
             output.append(2)
         output.append(3)
 
+
     @async_jump_test(3, 2, [2, 2], (ValueError, "can't jump into the body of a for loop"))
     async def test_no_jump_backwards_into_async_for_block(output):
         async for i in asynciter([1, 2]):
@@ -2377,7 +2651,7 @@ def test_jump_backwards_into_try_except_block(output):
         output.append(6)
 
     # 'except' with a variable creates an implicit finally block
-    @jump_test(5, 7, [4, 7, 8])
+    @jump_test(5, 7, [4, 7, 8], warning=(RuntimeWarning, unbound_locals))
     def test_jump_between_except_blocks_2(output):
         try:
             1/0
@@ -2540,7 +2814,7 @@ def test_large_function(self):
             output.append(x)          # line 1007
             return""" % ('\n' * 1000,), d)
         f = d['f']
-        self.run_test(f, 2, 1007, [0])
+        self.run_test(f, 2, 1007, [0], warning=(RuntimeWarning, self.unbound_locals))
 
     def test_jump_to_firstlineno(self):
         # This tests that PDB can jump back to the first line in a
@@ -2590,7 +2864,7 @@ def gen():
         next(gen())
         output.append(5)
 
-    @jump_test(2, 3, [1, 3])
+    @jump_test(2, 3, [1, 3], warning=(RuntimeWarning, unbound_locals))
     def test_jump_forward_over_listcomp(output):
         output.append(1)
         x = [i for i in range(10)]
@@ -2598,13 +2872,13 @@ def test_jump_forward_over_listcomp(output):
 
     # checking for segfaults.
     # See https://github.com/python/cpython/issues/92311
-    @jump_test(3, 1, [])
+    @jump_test(3, 1, [], warning=(RuntimeWarning, unbound_locals))
     def test_jump_backward_over_listcomp(output):
         a = 1
         x = [i for i in range(10)]
         c = 3
 
-    @jump_test(8, 2, [2, 7, 2])
+    @jump_test(8, 2, [2, 7, 2], warning=(RuntimeWarning, unbound_locals))
     def test_jump_backward_over_listcomp_v2(output):
         flag = False
         output.append(2)
@@ -2615,19 +2889,19 @@ def test_jump_backward_over_listcomp_v2(output):
         output.append(7)
         output.append(8)
 
-    @async_jump_test(2, 3, [1, 3])
+    @async_jump_test(2, 3, [1, 3], warning=(RuntimeWarning, unbound_locals))
     async def test_jump_forward_over_async_listcomp(output):
         output.append(1)
         x = [i async for i in asynciter(range(10))]
         output.append(3)
 
-    @async_jump_test(3, 1, [])
+    @async_jump_test(3, 1, [], warning=(RuntimeWarning, unbound_locals))
     async def test_jump_backward_over_async_listcomp(output):
         a = 1
         x = [i async for i in asynciter(range(10))]
         c = 3
 
-    @async_jump_test(8, 2, [2, 7, 2])
+    @async_jump_test(8, 2, [2, 7, 2], warning=(RuntimeWarning, unbound_locals))
     async def test_jump_backward_over_async_listcomp_v2(output):
         flag = False
         output.append(2)
@@ -2696,13 +2970,13 @@ def test_jump_with_null_on_stack_load_attr(output):
         )
         output.append(15)
 
-    @jump_test(2, 3, [1, 3])
+    @jump_test(2, 3, [1, 3], warning=(RuntimeWarning, unbound_locals))
     def test_jump_extended_args_unpack_ex_simple(output):
         output.append(1)
         _, *_, _ = output.append(2) or "Spam"
         output.append(3)
 
-    @jump_test(3, 4, [1, 4, 4, 5])
+    @jump_test(3, 4, [1, 4, 4, 5], warning=(RuntimeWarning, unbound_locals))
     def test_jump_extended_args_unpack_ex_tricky(output):
         output.append(1)
         (
@@ -2710,6 +2984,7 @@ def test_jump_extended_args_unpack_ex_tricky(output):
         ) = output.append(4) or "Spam"
         output.append(5)
 
+    @support.requires_resource('cpu')
     def test_jump_extended_args_for_iter(self):
         # In addition to failing when extended arg handling is broken, this can
         # also hang for a *very* long time:
@@ -2723,9 +2998,9 @@ def test_jump_extended_args_for_iter(self):
         namespace = {}
         exec("\n".join(source), namespace)
         f = namespace["f"]
-        self.run_test(f,  2, 100_000, [1, 100_000])
+        self.run_test(f,  2, 100_000, [1, 100_000], warning=(RuntimeWarning, self.unbound_locals))
 
-    @jump_test(2, 3, [1, 3])
+    @jump_test(2, 3, [1, 3], warning=(RuntimeWarning, unbound_locals))
     def test_jump_or_pop(output):
         output.append(1)
         _ = output.append(2) and "Spam"
@@ -2762,16 +3037,21 @@ def test_trace_unpack_long_sequence(self):
         self.assertEqual(counts, {'call': 1, 'line': 301, 'return': 1})
 
     def test_trace_lots_of_globals(self):
+        count = 1000
+        if _testinternalcapi is not None:
+            remaining = _testinternalcapi.get_c_recursion_remaining()
+            count = min(count, remaining)
+
         code = """if 1:
             def f():
                 return (
                     {}
                 )
-        """.format("\n+\n".join(f"var{i}\n" for i in range(1000)))
-        ns = {f"var{i}": i for i in range(1000)}
+        """.format("\n+\n".join(f"var{i}\n" for i in range(count)))
+        ns = {f"var{i}": i for i in range(count)}
         exec(code, ns)
         counts = self.count_traces(ns["f"])
-        self.assertEqual(counts, {'call': 1, 'line': 2000, 'return': 1})
+        self.assertEqual(counts, {'call': 1, 'line': count * 2, 'return': 1})
 
 
 class TestEdgeCases(unittest.TestCase):
diff --git a/Lib/test/test_sysconfig.py b/Lib/test/test_sysconfig.py
index b6dbf3d52cb4c3..2a6813f00bccc6 100644
--- a/Lib/test/test_sysconfig.py
+++ b/Lib/test/test_sysconfig.py
@@ -16,8 +16,11 @@
 from sysconfig import (get_paths, get_platform, get_config_vars,
                        get_path, get_path_names, _INSTALL_SCHEMES,
                        get_default_scheme, get_scheme_names, get_config_var,
-                       _expand_vars, _get_preferred_schemes, _main)
+                       _expand_vars, _get_preferred_schemes)
+from sysconfig.__main__ import _main, _parse_makefile
+import _imp
 import _osx_support
+import _sysconfig
 
 
 HAS_USER_BASE = sysconfig._HAS_USER_BASE
@@ -394,6 +397,24 @@ def test_ldshared_value(self):
 
         self.assertIn(ldflags, ldshared)
 
+    @unittest.skipIf(not _imp.extension_suffixes(), "stub loader has no suffixes")
+    def test_soabi(self):
+        soabi = sysconfig.get_config_var('SOABI')
+        self.assertIn(soabi, _imp.extension_suffixes()[0])
+
+    def test_library(self):
+        library = sysconfig.get_config_var('LIBRARY')
+        ldlibrary = sysconfig.get_config_var('LDLIBRARY')
+        major, minor = sys.version_info[:2]
+        if sys.platform == 'win32':
+            self.assertTrue(library.startswith(f'python{major}{minor}'))
+            self.assertTrue(library.endswith('.dll'))
+            self.assertEqual(library, ldlibrary)
+        else:
+            self.assertTrue(library.startswith(f'libpython{major}.{minor}'))
+            self.assertTrue(library.endswith('.a'))
+            self.assertTrue(ldlibrary.startswith(f'libpython{major}.{minor}'))
+
     @unittest.skipUnless(sys.platform == "darwin", "test only relevant on MacOSX")
     @requires_subprocess()
     def test_platform_in_subprocess(self):
@@ -472,10 +493,8 @@ def test_srcdir_independent_of_cwd(self):
 
     @unittest.skipIf(sysconfig.get_config_var('EXT_SUFFIX') is None,
                      'EXT_SUFFIX required for this test')
+    @unittest.skipIf(not _imp.extension_suffixes(), "stub loader has no suffixes")
     def test_EXT_SUFFIX_in_vars(self):
-        import _imp
-        if not _imp.extension_suffixes():
-            self.skipTest("stub loader has no suffixes")
         vars = sysconfig.get_config_vars()
         self.assertEqual(vars['EXT_SUFFIX'], _imp.extension_suffixes()[0])
 
@@ -521,7 +540,7 @@ def test_parse_makefile(self):
             print("var5=dollar$$5", file=makefile)
             print("var6=${var3}/lib/python3.5/config-$(VAR2)$(var5)"
                   "-x86_64-linux-gnu", file=makefile)
-        vars = sysconfig._parse_makefile(TESTFN)
+        vars = _parse_makefile(TESTFN)
         self.assertEqual(vars, {
             'var1': 'ab42',
             'VAR2': 'b42',
diff --git a/Lib/test/test_tabnanny.py b/Lib/test/test_tabnanny.py
index afb8da719b0eed..cc122cafc7985c 100644
--- a/Lib/test/test_tabnanny.py
+++ b/Lib/test/test_tabnanny.py
@@ -222,8 +222,8 @@ def test_when_nannynag_error_verbose(self):
         """
         with TemporaryPyFile(SOURCE_CODES["nannynag_errored"]) as file_path:
             out = f"{file_path!r}: *** Line 3: trouble in tab city! ***\n"
-            out += "offending line: '\\tprint(\"world\")\\n'\n"
-            out += "indent not equal e.g. at tab size 1\n"
+            out += "offending line: '\\tprint(\"world\")'\n"
+            out += "inconsistent use of tabs and spaces in indentation\n"
 
             tabnanny.verbose = 1
             self.verify_tabnanny_check(file_path, out=out)
@@ -231,7 +231,7 @@ def test_when_nannynag_error_verbose(self):
     def test_when_nannynag_error(self):
         """A python source code file eligible for raising `tabnanny.NannyNag`."""
         with TemporaryPyFile(SOURCE_CODES["nannynag_errored"]) as file_path:
-            out = f"{file_path} 3 '\\tprint(\"world\")\\n'\n"
+            out = f"{file_path} 3 '\\tprint(\"world\")'\n"
             self.verify_tabnanny_check(file_path, out=out)
 
     def test_when_no_file(self):
@@ -315,9 +315,9 @@ def validate_cmd(self, *args, stdout="", stderr="", partial=False, expect_failur
     def test_with_errored_file(self):
         """Should displays error when errored python file is given."""
         with TemporaryPyFile(SOURCE_CODES["wrong_indented"]) as file_path:
-            stderr  = f"{file_path!r}: Indentation Error: "
+            stderr  = f"{file_path!r}: Token Error: "
             stderr += ('unindent does not match any outer indentation level'
-                    ' (<tokenize>, line 3)')
+                       ' (<string>, line 3)')
             self.validate_cmd(file_path, stderr=stderr, expect_failure=True)
 
     def test_with_error_free_file(self):
@@ -341,7 +341,7 @@ def test_verbose_mode(self):
         """Should display more error information if verbose mode is on."""
         with TemporaryPyFile(SOURCE_CODES["nannynag_errored"]) as path:
             stdout = textwrap.dedent(
-                "offending line: '\\tprint(\"world\")\\n'"
+                "offending line: '\\tprint(\"world\")'"
             ).strip()
             self.validate_cmd("-v", path, stdout=stdout, partial=True)
 
@@ -349,6 +349,6 @@ def test_double_verbose_mode(self):
         """Should display detailed error information if double verbose is on."""
         with TemporaryPyFile(SOURCE_CODES["nannynag_errored"]) as path:
             stdout = textwrap.dedent(
-                "offending line: '\\tprint(\"world\")\\n'"
+                "offending line: '\\tprint(\"world\")'"
             ).strip()
             self.validate_cmd("-vv", path, stdout=stdout, partial=True)
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index e8d322d20a5a8e..761560bfbf8b53 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -1,3 +1,4 @@
+import errno
 import sys
 import os
 import io
@@ -42,7 +43,7 @@ def sha256sum(data):
 
 TEMPDIR = os.path.abspath(os_helper.TESTFN) + "-tardir"
 tarextdir = TEMPDIR + '-extract-test'
-tarname = support.findfile("testtar.tar")
+tarname = support.findfile("testtar.tar", subdir="archivetestdata")
 gzipname = os.path.join(TEMPDIR, "testtar.tar.gz")
 bz2name = os.path.join(TEMPDIR, "testtar.tar.bz2")
 xzname = os.path.join(TEMPDIR, "testtar.tar.xz")
@@ -100,6 +101,14 @@ def setUp(self):
     def tearDown(self):
         self.tar.close()
 
+class StreamModeTest(ReadTest):
+
+    # Only needs to change how the tarfile is opened to set
+    # stream mode
+    def setUp(self):
+        self.tar = tarfile.open(self.tarname, mode=self.mode,
+                                encoding="iso8859-1",
+                                stream=True)
 
 class UstarReadTest(ReadTest, unittest.TestCase):
 
@@ -482,7 +491,7 @@ def test_length_zero_header(self):
         # bpo-39017 (CVE-2019-20907): reading a zero-length header should fail
         # with an exception
         with self.assertRaisesRegex(tarfile.ReadError, "file could not be opened successfully"):
-            with tarfile.open(support.findfile('recursion.tar')) as tar:
+            with tarfile.open(support.findfile('recursion.tar', subdir='archivetestdata')):
                 pass
 
     def test_extractfile_name(self):
@@ -852,6 +861,21 @@ class Bz2StreamReadTest(Bz2Test, StreamReadTest):
 class LzmaStreamReadTest(LzmaTest, StreamReadTest):
     pass
 
+class TarStreamModeReadTest(StreamModeTest, unittest.TestCase):
+
+    def test_stream_mode_no_cache(self):
+        for _ in self.tar:
+            pass
+        self.assertEqual(self.tar.members, [])
+
+class GzipStreamModeReadTest(GzipTest, TarStreamModeReadTest):
+    pass
+
+class Bz2StreamModeReadTest(Bz2Test, TarStreamModeReadTest):
+    pass
+
+class LzmaStreamModeReadTest(LzmaTest, TarStreamModeReadTest):
+    pass
 
 class DetectReadTest(TarTest, unittest.TestCase):
     def _testfunc_file(self, name, mode):
@@ -915,6 +939,23 @@ class LzmaDetectReadTest(LzmaTest, DetectReadTest):
     pass
 
 
+class GzipBrokenHeaderCorrectException(GzipTest, unittest.TestCase):
+    """
+    See: https://github.com/python/cpython/issues/107396
+    """
+    def runTest(self):
+        f = io.BytesIO(
+            b'\x1f\x8b'  # header
+            b'\x08'  # compression method
+            b'\x04'  # flags
+            b'\0\0\0\0\0\0'  # timestamp, compression data, OS ID
+            b'\0\x01'  # size
+            b'\0\0\0\0\0'  # corrupt data (zeros)
+        )
+        with self.assertRaises(tarfile.ReadError):
+            tarfile.open(fileobj=f, mode='r|gz')
+
+
 class MemberReadTest(ReadTest, unittest.TestCase):
 
     def _test_member(self, tarinfo, chksum=None, **kwargs):
@@ -2524,7 +2565,7 @@ def test__all__(self):
         support.check__all__(self, tarfile, not_exported=not_exported)
 
     def test_useful_error_message_when_modules_missing(self):
-        fname = os.path.join(os.path.dirname(__file__), 'testtar.tar.xz')
+        fname = os.path.join(os.path.dirname(__file__), 'archivetestdata', 'testtar.tar.xz')
         with self.assertRaises(tarfile.ReadError) as excinfo:
             error = tarfile.CompressionError('lzma module is not available'),
             with unittest.mock.patch.object(tarfile.TarFile, 'xzopen', side_effect=error):
@@ -2547,16 +2588,17 @@ def tarfilecmd_failure(self, *args):
         return script_helper.assert_python_failure('-m', 'tarfile', *args)
 
     def make_simple_tarfile(self, tar_name):
-        files = [support.findfile('tokenize_tests.txt'),
+        files = [support.findfile('tokenize_tests.txt',
+                                  subdir='tokenizedata'),
                  support.findfile('tokenize_tests-no-coding-cookie-'
-                                  'and-utf8-bom-sig-only.txt')]
+                                  'and-utf8-bom-sig-only.txt',
+                                  subdir='tokenizedata')]
         self.addCleanup(os_helper.unlink, tar_name)
         with tarfile.open(tar_name, 'w') as tf:
             for tardata in files:
                 tf.add(tardata, arcname=os.path.basename(tardata))
 
     def make_evil_tarfile(self, tar_name):
-        files = [support.findfile('tokenize_tests.txt')]
         self.addCleanup(os_helper.unlink, tar_name)
         with tarfile.open(tar_name, 'w') as tf:
             benign = tarfile.TarInfo('benign')
@@ -2588,7 +2630,7 @@ def test_test_command_verbose(self):
                 self.assertIn(b'is a tar archive.\n', out)
 
     def test_test_command_invalid_file(self):
-        zipname = support.findfile('zipdir.zip')
+        zipname = support.findfile('zipdir.zip', subdir='archivetestdata')
         rc, out, err = self.tarfilecmd_failure('-t', zipname)
         self.assertIn(b' is not a tar archive.', err)
         self.assertEqual(out, b'')
@@ -2630,16 +2672,18 @@ def test_list_command_verbose(self):
                 self.assertEqual(out, expected)
 
     def test_list_command_invalid_file(self):
-        zipname = support.findfile('zipdir.zip')
+        zipname = support.findfile('zipdir.zip', subdir='archivetestdata')
         rc, out, err = self.tarfilecmd_failure('-l', zipname)
         self.assertIn(b' is not a tar archive.', err)
         self.assertEqual(out, b'')
         self.assertEqual(rc, 1)
 
     def test_create_command(self):
-        files = [support.findfile('tokenize_tests.txt'),
+        files = [support.findfile('tokenize_tests.txt',
+                                  subdir='tokenizedata'),
                  support.findfile('tokenize_tests-no-coding-cookie-'
-                                  'and-utf8-bom-sig-only.txt')]
+                                  'and-utf8-bom-sig-only.txt',
+                                  subdir='tokenizedata')]
         for opt in '-c', '--create':
             try:
                 out = self.tarfilecmd(opt, tmpname, *files)
@@ -2650,9 +2694,11 @@ def test_create_command(self):
                 os_helper.unlink(tmpname)
 
     def test_create_command_verbose(self):
-        files = [support.findfile('tokenize_tests.txt'),
+        files = [support.findfile('tokenize_tests.txt',
+                                  subdir='tokenizedata'),
                  support.findfile('tokenize_tests-no-coding-cookie-'
-                                  'and-utf8-bom-sig-only.txt')]
+                                  'and-utf8-bom-sig-only.txt',
+                                  subdir='tokenizedata')]
         for opt in '-v', '--verbose':
             try:
                 out = self.tarfilecmd(opt, '-c', tmpname, *files,
@@ -2664,7 +2710,7 @@ def test_create_command_verbose(self):
                 os_helper.unlink(tmpname)
 
     def test_create_command_dotless_filename(self):
-        files = [support.findfile('tokenize_tests.txt')]
+        files = [support.findfile('tokenize_tests.txt', subdir='tokenizedata')]
         try:
             out = self.tarfilecmd('-c', dotlessname, *files)
             self.assertEqual(out, b'')
@@ -2675,7 +2721,7 @@ def test_create_command_dotless_filename(self):
 
     def test_create_command_dot_started_filename(self):
         tar_name = os.path.join(TEMPDIR, ".testtar")
-        files = [support.findfile('tokenize_tests.txt')]
+        files = [support.findfile('tokenize_tests.txt', subdir='tokenizedata')]
         try:
             out = self.tarfilecmd('-c', tar_name, *files)
             self.assertEqual(out, b'')
@@ -2685,9 +2731,11 @@ def test_create_command_dot_started_filename(self):
             os_helper.unlink(tar_name)
 
     def test_create_command_compressed(self):
-        files = [support.findfile('tokenize_tests.txt'),
+        files = [support.findfile('tokenize_tests.txt',
+                                  subdir='tokenizedata'),
                  support.findfile('tokenize_tests-no-coding-cookie-'
-                                  'and-utf8-bom-sig-only.txt')]
+                                  'and-utf8-bom-sig-only.txt',
+                                  subdir='tokenizedata')]
         for filetype in (GzipTest, Bz2Test, LzmaTest):
             if not filetype.open:
                 continue
@@ -2749,7 +2797,7 @@ def test_extract_command_different_directory(self):
             os_helper.rmtree(tarextdir)
 
     def test_extract_command_invalid_file(self):
-        zipname = support.findfile('zipdir.zip')
+        zipname = support.findfile('zipdir.zip', subdir='archivetestdata')
         with os_helper.temp_cwd(tarextdir):
             rc, out, err = self.tarfilecmd_failure('-e', zipname)
         self.assertIn(b' is not a tar archive.', err)
@@ -3314,10 +3362,12 @@ def __exit__(self, *exc):
         self.bio = None
 
     def add(self, name, *, type=None, symlink_to=None, hardlink_to=None,
-            mode=None, **kwargs):
+            mode=None, size=None, **kwargs):
         """Add a member to the test archive. Call within `with`."""
         name = str(name)
         tarinfo = tarfile.TarInfo(name).replace(**kwargs)
+        if size is not None:
+            tarinfo.size = size
         if mode:
             tarinfo.mode = _filemode_to_int(mode)
         if symlink_to is not None:
@@ -3393,7 +3443,8 @@ def check_context(self, tar, filter):
                 raise self.raised_exception
             self.assertEqual(self.expected_paths, set())
 
-    def expect_file(self, name, type=None, symlink_to=None, mode=None):
+    def expect_file(self, name, type=None, symlink_to=None, mode=None,
+                    size=None):
         """Check a single file. See check_context."""
         if self.raised_exception:
             raise self.raised_exception
@@ -3422,6 +3473,8 @@ def expect_file(self, name, type=None, symlink_to=None, mode=None):
             self.assertTrue(path.is_fifo())
         else:
             raise NotImplementedError(type)
+        if size is not None:
+            self.assertEqual(path.stat().st_size, size)
         for parent in path.parents:
             self.expected_paths.discard(parent)
 
@@ -3468,8 +3521,15 @@ def test_parent_symlink(self):
         # Test interplaying symlinks
         # Inspired by 'dirsymlink2a' in jwilk/traversal-archives
         with ArchiveMaker() as arc:
+
+            # `current` links to `.` which is both:
+            #   - the destination directory
+            #   - `current` itself
             arc.add('current', symlink_to='.')
+
+            # effectively points to ./../
             arc.add('parent', symlink_to='current/..')
+
             arc.add('parent/evil')
 
         if os_helper.can_symlink():
@@ -3511,9 +3571,46 @@ def test_parent_symlink(self):
     def test_parent_symlink2(self):
         # Test interplaying symlinks
         # Inspired by 'dirsymlink2b' in jwilk/traversal-archives
+
+        # Posix and Windows have different pathname resolution:
+        # either symlink or a '..' component resolve first.
+        # Let's see which we are on.
+        if os_helper.can_symlink():
+            testpath = os.path.join(TEMPDIR, 'resolution_test')
+            os.mkdir(testpath)
+
+            # testpath/current links to `.` which is all of:
+            #   - `testpath`
+            #   - `testpath/current`
+            #   - `testpath/current/current`
+            #   - etc.
+            os.symlink('.', os.path.join(testpath, 'current'))
+
+            # we'll test where `testpath/current/../file` ends up
+            with open(os.path.join(testpath, 'current', '..', 'file'), 'w'):
+                pass
+
+            if os.path.exists(os.path.join(testpath, 'file')):
+                # Windows collapses 'current\..' to '.' first, leaving
+                # 'testpath\file'
+                dotdot_resolves_early = True
+            elif os.path.exists(os.path.join(testpath, '..', 'file')):
+                # Posix resolves 'current' to '.' first, leaving
+                # 'testpath/../file'
+                dotdot_resolves_early = False
+            else:
+                raise AssertionError('Could not determine link resolution')
+
         with ArchiveMaker() as arc:
+
+            # `current` links to `.` which is both the destination directory
+            # and `current` itself
             arc.add('current', symlink_to='.')
+
+            # `current/parent` is also available as `./parent`,
+            # and effectively points to `./../`
             arc.add('current/parent', symlink_to='..')
+
             arc.add('parent/evil')
 
         with self.check_context(arc.open(), 'fully_trusted'):
@@ -3527,6 +3624,7 @@ def test_parent_symlink2(self):
 
         with self.check_context(arc.open(), 'tar'):
             if os_helper.can_symlink():
+                # Fail when extracting a file outside destination
                 self.expect_exception(
                         tarfile.OutsideDestinationError,
                         "'parent/evil' would be extracted to "
@@ -3537,10 +3635,24 @@ def test_parent_symlink2(self):
                 self.expect_file('parent/evil')
 
         with self.check_context(arc.open(), 'data'):
-            self.expect_exception(
-                    tarfile.LinkOutsideDestinationError,
-                    """'current/parent' would link to ['"].*['"], """
-                    + "which is outside the destination")
+            if os_helper.can_symlink():
+                if dotdot_resolves_early:
+                    # Fail when extracting a file outside destination
+                    self.expect_exception(
+                            tarfile.OutsideDestinationError,
+                            "'parent/evil' would be extracted to "
+                            + """['"].*evil['"], which is outside """
+                            + "the destination")
+                else:
+                    # Fail as soon as we have a symlink outside the destination
+                    self.expect_exception(
+                            tarfile.LinkOutsideDestinationError,
+                            "'current/parent' would link to "
+                            + """['"].*outerdir['"], which is outside """
+                            + "the destination")
+            else:
+                self.expect_file('current/')
+                self.expect_file('parent/evil')
 
     @symlink_test
     def test_absolute_symlink(self):
@@ -3570,12 +3682,30 @@ def test_absolute_symlink(self):
         with self.check_context(arc.open(), 'data'):
             self.expect_exception(
                 tarfile.AbsoluteLinkError,
-                "'parent' is a symlink to an absolute path")
+                "'parent' is a link to an absolute path")
+
+    def test_absolute_hardlink(self):
+        # Test hardlink to an absolute path
+        # Inspired by 'dirsymlink' in https://github.com/jwilk/traversal-archives
+        with ArchiveMaker() as arc:
+            arc.add('parent', hardlink_to=self.outerdir / 'foo')
+
+        with self.check_context(arc.open(), 'fully_trusted'):
+            self.expect_exception(KeyError, ".*foo. not found")
+
+        with self.check_context(arc.open(), 'tar'):
+            self.expect_exception(KeyError, ".*foo. not found")
+
+        with self.check_context(arc.open(), 'data'):
+            self.expect_exception(
+                tarfile.AbsoluteLinkError,
+                "'parent' is a link to an absolute path")
 
     @symlink_test
     def test_sly_relative0(self):
         # Inspired by 'relative0' in jwilk/traversal-archives
         with ArchiveMaker() as arc:
+            # points to `../../tmp/moo`
             arc.add('../moo', symlink_to='..//tmp/moo')
 
         try:
@@ -3626,6 +3756,56 @@ def test_sly_relative2(self):
                     + """['"].*moo['"], which is outside the """
                     + "destination")
 
+    @symlink_test
+    def test_deep_symlink(self):
+        # Test that symlinks and hardlinks inside a directory
+        # point to the correct file (`target` of size 3).
+        # If links aren't supported we get a copy of the file.
+        with ArchiveMaker() as arc:
+            arc.add('targetdir/target', size=3)
+            # a hardlink's linkname is relative to the archive
+            arc.add('linkdir/hardlink', hardlink_to=os.path.join(
+                'targetdir', 'target'))
+            # a symlink's  linkname is relative to the link's directory
+            arc.add('linkdir/symlink', symlink_to=os.path.join(
+                '..', 'targetdir', 'target'))
+
+        for filter in 'tar', 'data', 'fully_trusted':
+            with self.check_context(arc.open(), filter):
+                self.expect_file('targetdir/target', size=3)
+                self.expect_file('linkdir/hardlink', size=3)
+                if os_helper.can_symlink():
+                    self.expect_file('linkdir/symlink', size=3,
+                                     symlink_to='../targetdir/target')
+                else:
+                    self.expect_file('linkdir/symlink', size=3)
+
+    @symlink_test
+    def test_chains(self):
+        # Test chaining of symlinks/hardlinks.
+        # Symlinks are created before the files they point to.
+        with ArchiveMaker() as arc:
+            arc.add('linkdir/symlink', symlink_to='hardlink')
+            arc.add('symlink2', symlink_to=os.path.join(
+                'linkdir', 'hardlink2'))
+            arc.add('targetdir/target', size=3)
+            arc.add('linkdir/hardlink', hardlink_to='targetdir/target')
+            arc.add('linkdir/hardlink2', hardlink_to='linkdir/symlink')
+
+        for filter in 'tar', 'data', 'fully_trusted':
+            with self.check_context(arc.open(), filter):
+                self.expect_file('targetdir/target', size=3)
+                self.expect_file('linkdir/hardlink', size=3)
+                self.expect_file('linkdir/hardlink2', size=3)
+                if os_helper.can_symlink():
+                    self.expect_file('linkdir/symlink', size=3,
+                                     symlink_to='hardlink')
+                    self.expect_file('symlink2', size=3,
+                                     symlink_to='linkdir/hardlink2')
+                else:
+                    self.expect_file('linkdir/symlink', size=3)
+                    self.expect_file('symlink2', size=3)
+
     def test_modes(self):
         # Test how file modes are extracted
         # (Note that the modes are ignored on platforms without working chmod)
@@ -3636,34 +3816,55 @@ def test_modes(self):
             arc.add('read_group_only', mode='?---r-----')
             arc.add('no_bits', mode='?---------')
             arc.add('dir/', mode='?---rwsrwt')
+            arc.add('dir_all_bits/', mode='?rwsrwsrwt')
 
-        # On some systems, setting the sticky bit is a no-op.
-        # Check if that's the case.
+        # On some systems, setting the uid, gid, and/or sticky bit is a no-ops.
+        # Check which bits we can set, so we can compare tarfile machinery to
+        # a simple chmod.
         tmp_filename = os.path.join(TEMPDIR, "tmp.file")
         with open(tmp_filename, 'w'):
             pass
-        os.chmod(tmp_filename, os.stat(tmp_filename).st_mode | stat.S_ISVTX)
-        have_sticky_files = (os.stat(tmp_filename).st_mode & stat.S_ISVTX)
-        os.unlink(tmp_filename)
+        try:
+            new_mode = (os.stat(tmp_filename).st_mode
+                        | stat.S_ISVTX | stat.S_ISGID | stat.S_ISUID)
+            try:
+                os.chmod(tmp_filename, new_mode)
+            except OSError as exc:
+                if exc.errno == getattr(errno, "EFTYPE", 0):
+                    # gh-108948: On FreeBSD, regular users cannot set
+                    # the sticky bit.
+                    self.skipTest("chmod() failed with EFTYPE: "
+                                  "regular users cannot set sticky bit")
+                else:
+                    raise
+
+            got_mode = os.stat(tmp_filename).st_mode
+            _t_file = 't' if (got_mode & stat.S_ISVTX) else 'x'
+            _suid_file = 's' if (got_mode & stat.S_ISUID) else 'x'
+            _sgid_file = 's' if (got_mode & stat.S_ISGID) else 'x'
+        finally:
+            os.unlink(tmp_filename)
 
         os.mkdir(tmp_filename)
-        os.chmod(tmp_filename, os.stat(tmp_filename).st_mode | stat.S_ISVTX)
-        have_sticky_dirs = (os.stat(tmp_filename).st_mode & stat.S_ISVTX)
+        new_mode = (os.stat(tmp_filename).st_mode
+                    | stat.S_ISVTX | stat.S_ISGID | stat.S_ISUID)
+        os.chmod(tmp_filename, new_mode)
+        got_mode = os.stat(tmp_filename).st_mode
+        _t_dir = 't' if (got_mode & stat.S_ISVTX) else 'x'
+        _suid_dir = 's' if (got_mode & stat.S_ISUID) else 'x'
+        _sgid_dir = 's' if (got_mode & stat.S_ISGID) else 'x'
         os.rmdir(tmp_filename)
 
         with self.check_context(arc.open(), 'fully_trusted'):
-            if have_sticky_files:
-                self.expect_file('all_bits', mode='?rwsrwsrwt')
-            else:
-                self.expect_file('all_bits', mode='?rwsrwsrwx')
+            self.expect_file('all_bits',
+                             mode=f'?rw{_suid_file}rw{_sgid_file}rw{_t_file}')
             self.expect_file('perm_bits', mode='?rwxrwxrwx')
             self.expect_file('exec_group_other', mode='?rw-rwxrwx')
             self.expect_file('read_group_only', mode='?---r-----')
             self.expect_file('no_bits', mode='?---------')
-            if have_sticky_dirs:
-                self.expect_file('dir/', mode='?---rwsrwt')
-            else:
-                self.expect_file('dir/', mode='?---rwsrwx')
+            self.expect_file('dir/', mode=f'?---rw{_sgid_dir}rw{_t_dir}')
+            self.expect_file('dir_all_bits/',
+                             mode=f'?rw{_suid_dir}rw{_sgid_dir}rw{_t_dir}')
 
         with self.check_context(arc.open(), 'tar'):
             self.expect_file('all_bits', mode='?rwxr-xr-x')
@@ -3672,6 +3873,7 @@ def test_modes(self):
             self.expect_file('read_group_only', mode='?---r-----')
             self.expect_file('no_bits', mode='?---------')
             self.expect_file('dir/', mode='?---r-xr-x')
+            self.expect_file('dir_all_bits/', mode='?rwxr-xr-x')
 
         with self.check_context(arc.open(), 'data'):
             normal_dir_mode = stat.filemode(stat.S_IMODE(
@@ -3682,6 +3884,7 @@ def test_modes(self):
             self.expect_file('read_group_only', mode='?rw-r-----')
             self.expect_file('no_bits', mode='?rw-------')
             self.expect_file('dir/', mode=normal_dir_mode)
+            self.expect_file('dir_all_bits/', mode=normal_dir_mode)
 
     def test_pipe(self):
         # Test handling of a special file
diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
index cd79024ab2c8e3..ebdb58f91d3d8a 100644
--- a/Lib/test/test_tcl.py
+++ b/Lib/test/test_tcl.py
@@ -20,14 +20,6 @@
 
 tcl_version = tuple(map(int, _tkinter.TCL_VERSION.split('.')))
 
-_tk_patchlevel = None
-def get_tk_patchlevel():
-    global _tk_patchlevel
-    if _tk_patchlevel is None:
-        tcl = Tcl()
-        _tk_patchlevel = tcl.info_patchlevel()
-    return _tk_patchlevel
-
 
 class TkinterTest(unittest.TestCase):
 
@@ -142,7 +134,10 @@ def test_getint(self):
         for i in self.get_integers():
             self.assertEqual(tcl.getint(' %d ' % i), i)
             self.assertEqual(tcl.getint(' %#o ' % i), i)
-            self.assertEqual(tcl.getint((' %#o ' % i).replace('o', '')), i)
+            # Numbers starting with 0 are parsed as decimal in Tcl 9.0
+            # and as octal in older versions.
+            self.assertEqual(tcl.getint((' %#o ' % i).replace('o', '')),
+                             i if tcl_version < (9, 0) else int('%o' % i))
             self.assertEqual(tcl.getint(' %#x ' % i), i)
         self.assertEqual(tcl.getint(42), 42)
         self.assertRaises(TypeError, tcl.getint)
@@ -568,7 +563,6 @@ def test_splitlist(self):
                 (1, '2', (3.4,)) if self.wantobjects else
                 ('1', '2', '3.4')),
         ]
-        tk_patchlevel = get_tk_patchlevel()
         if not self.wantobjects:
             expected = ('12', '\u20ac', '\xe2\x82\xac', '3.4')
         else:
@@ -577,8 +571,8 @@ def test_splitlist(self):
             (call('dict', 'create', 12, '\u20ac', b'\xe2\x82\xac', (3.4,)),
                 expected),
         ]
-        dbg_info = ('want objects? %s, Tcl version: %s, Tk patchlevel: %s'
-                    % (self.wantobjects, tcl_version, tk_patchlevel))
+        dbg_info = ('want objects? %s, Tcl version: %s, Tcl patchlevel: %s'
+                    % (self.wantobjects, tcl_version, self.interp.info_patchlevel()))
         for arg, res in testcases:
             self.assertEqual(splitlist(arg), res,
                              'arg=%a, %s' % (arg, dbg_info))
diff --git a/Lib/test/test_telnetlib.py b/Lib/test/test_telnetlib.py
deleted file mode 100644
index a9cade2ee466f9..00000000000000
--- a/Lib/test/test_telnetlib.py
+++ /dev/null
@@ -1,405 +0,0 @@
-import socket
-import selectors
-import threading
-import contextlib
-
-from test import support
-from test.support import socket_helper, warnings_helper
-import unittest
-
-support.requires_working_socket(module=True)
-
-telnetlib = warnings_helper.import_deprecated('telnetlib')
-
-HOST = socket_helper.HOST
-
-def server(evt, serv):
-    serv.listen()
-    evt.set()
-    try:
-        conn, addr = serv.accept()
-        conn.close()
-    except TimeoutError:
-        pass
-    finally:
-        serv.close()
-
-class GeneralTests(unittest.TestCase):
-
-    def setUp(self):
-        self.evt = threading.Event()
-        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        self.sock.settimeout(60)  # Safety net. Look issue 11812
-        self.port = socket_helper.bind_port(self.sock)
-        self.thread = threading.Thread(target=server, args=(self.evt,self.sock))
-        self.thread.daemon = True
-        self.thread.start()
-        self.evt.wait()
-
-    def tearDown(self):
-        self.thread.join()
-        del self.thread  # Clear out any dangling Thread objects.
-
-    def testBasic(self):
-        # connects
-        telnet = telnetlib.Telnet(HOST, self.port)
-        telnet.sock.close()
-
-    def testContextManager(self):
-        with telnetlib.Telnet(HOST, self.port) as tn:
-            self.assertIsNotNone(tn.get_socket())
-        self.assertIsNone(tn.get_socket())
-
-    def testTimeoutDefault(self):
-        self.assertTrue(socket.getdefaulttimeout() is None)
-        socket.setdefaulttimeout(30)
-        try:
-            telnet = telnetlib.Telnet(HOST, self.port)
-        finally:
-            socket.setdefaulttimeout(None)
-        self.assertEqual(telnet.sock.gettimeout(), 30)
-        telnet.sock.close()
-
-    def testTimeoutNone(self):
-        # None, having other default
-        self.assertTrue(socket.getdefaulttimeout() is None)
-        socket.setdefaulttimeout(30)
-        try:
-            telnet = telnetlib.Telnet(HOST, self.port, timeout=None)
-        finally:
-            socket.setdefaulttimeout(None)
-        self.assertTrue(telnet.sock.gettimeout() is None)
-        telnet.sock.close()
-
-    def testTimeoutValue(self):
-        telnet = telnetlib.Telnet(HOST, self.port, timeout=30)
-        self.assertEqual(telnet.sock.gettimeout(), 30)
-        telnet.sock.close()
-
-    def testTimeoutOpen(self):
-        telnet = telnetlib.Telnet()
-        telnet.open(HOST, self.port, timeout=30)
-        self.assertEqual(telnet.sock.gettimeout(), 30)
-        telnet.sock.close()
-
-    def testGetters(self):
-        # Test telnet getter methods
-        telnet = telnetlib.Telnet(HOST, self.port, timeout=30)
-        t_sock = telnet.sock
-        self.assertEqual(telnet.get_socket(), t_sock)
-        self.assertEqual(telnet.fileno(), t_sock.fileno())
-        telnet.sock.close()
-
-class SocketStub(object):
-    ''' a socket proxy that re-defines sendall() '''
-    def __init__(self, reads=()):
-        self.reads = list(reads)  # Intentionally make a copy.
-        self.writes = []
-        self.block = False
-    def sendall(self, data):
-        self.writes.append(data)
-    def recv(self, size):
-        out = b''
-        while self.reads and len(out) < size:
-            out += self.reads.pop(0)
-        if len(out) > size:
-            self.reads.insert(0, out[size:])
-            out = out[:size]
-        return out
-
-class TelnetAlike(telnetlib.Telnet):
-    def fileno(self):
-        raise NotImplementedError()
-    def close(self): pass
-    def sock_avail(self):
-        return (not self.sock.block)
-    def msg(self, msg, *args):
-        with support.captured_stdout() as out:
-            telnetlib.Telnet.msg(self, msg, *args)
-        self._messages += out.getvalue()
-        return
-
-class MockSelector(selectors.BaseSelector):
-
-    def __init__(self):
-        self.keys = {}
-
-    @property
-    def resolution(self):
-        return 1e-3
-
-    def register(self, fileobj, events, data=None):
-        key = selectors.SelectorKey(fileobj, 0, events, data)
-        self.keys[fileobj] = key
-        return key
-
-    def unregister(self, fileobj):
-        return self.keys.pop(fileobj)
-
-    def select(self, timeout=None):
-        block = False
-        for fileobj in self.keys:
-            if isinstance(fileobj, TelnetAlike):
-                block = fileobj.sock.block
-                break
-        if block:
-            return []
-        else:
-            return [(key, key.events) for key in self.keys.values()]
-
-    def get_map(self):
-        return self.keys
-
-
-@contextlib.contextmanager
-def test_socket(reads):
-    def new_conn(*ignored):
-        return SocketStub(reads)
-    try:
-        old_conn = socket.create_connection
-        socket.create_connection = new_conn
-        yield None
-    finally:
-        socket.create_connection = old_conn
-    return
-
-def test_telnet(reads=(), cls=TelnetAlike):
-    ''' return a telnetlib.Telnet object that uses a SocketStub with
-        reads queued up to be read '''
-    for x in reads:
-        assert type(x) is bytes, x
-    with test_socket(reads):
-        telnet = cls('dummy', 0)
-        telnet._messages = '' # debuglevel output
-    return telnet
-
-class ExpectAndReadTestCase(unittest.TestCase):
-    def setUp(self):
-        self.old_selector = telnetlib._TelnetSelector
-        telnetlib._TelnetSelector = MockSelector
-    def tearDown(self):
-        telnetlib._TelnetSelector = self.old_selector
-
-class ReadTests(ExpectAndReadTestCase):
-    def test_read_until(self):
-        """
-        read_until(expected, timeout=None)
-        test the blocking version of read_util
-        """
-        want = [b'xxxmatchyyy']
-        telnet = test_telnet(want)
-        data = telnet.read_until(b'match')
-        self.assertEqual(data, b'xxxmatch', msg=(telnet.cookedq, telnet.rawq, telnet.sock.reads))
-
-        reads = [b'x' * 50, b'match', b'y' * 50]
-        expect = b''.join(reads[:-1])
-        telnet = test_telnet(reads)
-        data = telnet.read_until(b'match')
-        self.assertEqual(data, expect)
-
-
-    def test_read_all(self):
-        """
-        read_all()
-          Read all data until EOF; may block.
-        """
-        reads = [b'x' * 500, b'y' * 500, b'z' * 500]
-        expect = b''.join(reads)
-        telnet = test_telnet(reads)
-        data = telnet.read_all()
-        self.assertEqual(data, expect)
-        return
-
-    def test_read_some(self):
-        """
-        read_some()
-          Read at least one byte or EOF; may block.
-        """
-        # test 'at least one byte'
-        telnet = test_telnet([b'x' * 500])
-        data = telnet.read_some()
-        self.assertTrue(len(data) >= 1)
-        # test EOF
-        telnet = test_telnet()
-        data = telnet.read_some()
-        self.assertEqual(b'', data)
-
-    def _read_eager(self, func_name):
-        """
-        read_*_eager()
-          Read all data available already queued or on the socket,
-          without blocking.
-        """
-        want = b'x' * 100
-        telnet = test_telnet([want])
-        func = getattr(telnet, func_name)
-        telnet.sock.block = True
-        self.assertEqual(b'', func())
-        telnet.sock.block = False
-        data = b''
-        while True:
-            try:
-                data += func()
-            except EOFError:
-                break
-        self.assertEqual(data, want)
-
-    def test_read_eager(self):
-        # read_eager and read_very_eager make the same guarantees
-        # (they behave differently but we only test the guarantees)
-        self._read_eager('read_eager')
-        self._read_eager('read_very_eager')
-        # NB -- we need to test the IAC block which is mentioned in the
-        # docstring but not in the module docs
-
-    def read_very_lazy(self):
-        want = b'x' * 100
-        telnet = test_telnet([want])
-        self.assertEqual(b'', telnet.read_very_lazy())
-        while telnet.sock.reads:
-            telnet.fill_rawq()
-        data = telnet.read_very_lazy()
-        self.assertEqual(want, data)
-        self.assertRaises(EOFError, telnet.read_very_lazy)
-
-    def test_read_lazy(self):
-        want = b'x' * 100
-        telnet = test_telnet([want])
-        self.assertEqual(b'', telnet.read_lazy())
-        data = b''
-        while True:
-            try:
-                read_data = telnet.read_lazy()
-                data += read_data
-                if not read_data:
-                    telnet.fill_rawq()
-            except EOFError:
-                break
-            self.assertTrue(want.startswith(data))
-        self.assertEqual(data, want)
-
-class nego_collector(object):
-    def __init__(self, sb_getter=None):
-        self.seen = b''
-        self.sb_getter = sb_getter
-        self.sb_seen = b''
-
-    def do_nego(self, sock, cmd, opt):
-        self.seen += cmd + opt
-        if cmd == tl.SE and self.sb_getter:
-            sb_data = self.sb_getter()
-            self.sb_seen += sb_data
-
-tl = telnetlib
-
-class WriteTests(unittest.TestCase):
-    '''The only thing that write does is replace each tl.IAC for
-    tl.IAC+tl.IAC'''
-
-    def test_write(self):
-        data_sample = [b'data sample without IAC',
-                       b'data sample with' + tl.IAC + b' one IAC',
-                       b'a few' + tl.IAC + tl.IAC + b' iacs' + tl.IAC,
-                       tl.IAC,
-                       b'']
-        for data in data_sample:
-            telnet = test_telnet()
-            telnet.write(data)
-            written = b''.join(telnet.sock.writes)
-            self.assertEqual(data.replace(tl.IAC,tl.IAC+tl.IAC), written)
-
-class OptionTests(unittest.TestCase):
-    # RFC 854 commands
-    cmds = [tl.AO, tl.AYT, tl.BRK, tl.EC, tl.EL, tl.GA, tl.IP, tl.NOP]
-
-    def _test_command(self, data):
-        """ helper for testing IAC + cmd """
-        telnet = test_telnet(data)
-        data_len = len(b''.join(data))
-        nego = nego_collector()
-        telnet.set_option_negotiation_callback(nego.do_nego)
-        txt = telnet.read_all()
-        cmd = nego.seen
-        self.assertTrue(len(cmd) > 0) # we expect at least one command
-        self.assertIn(cmd[:1], self.cmds)
-        self.assertEqual(cmd[1:2], tl.NOOPT)
-        self.assertEqual(data_len, len(txt + cmd))
-        nego.sb_getter = None # break the nego => telnet cycle
-
-    def test_IAC_commands(self):
-        for cmd in self.cmds:
-            self._test_command([tl.IAC, cmd])
-            self._test_command([b'x' * 100, tl.IAC, cmd, b'y'*100])
-            self._test_command([b'x' * 10, tl.IAC, cmd, b'y'*10])
-        # all at once
-        self._test_command([tl.IAC + cmd for (cmd) in self.cmds])
-
-    def test_SB_commands(self):
-        # RFC 855, subnegotiations portion
-        send = [tl.IAC + tl.SB + tl.IAC + tl.SE,
-                tl.IAC + tl.SB + tl.IAC + tl.IAC + tl.IAC + tl.SE,
-                tl.IAC + tl.SB + tl.IAC + tl.IAC + b'aa' + tl.IAC + tl.SE,
-                tl.IAC + tl.SB + b'bb' + tl.IAC + tl.IAC + tl.IAC + tl.SE,
-                tl.IAC + tl.SB + b'cc' + tl.IAC + tl.IAC + b'dd' + tl.IAC + tl.SE,
-               ]
-        telnet = test_telnet(send)
-        nego = nego_collector(telnet.read_sb_data)
-        telnet.set_option_negotiation_callback(nego.do_nego)
-        txt = telnet.read_all()
-        self.assertEqual(txt, b'')
-        want_sb_data = tl.IAC + tl.IAC + b'aabb' + tl.IAC + b'cc' + tl.IAC + b'dd'
-        self.assertEqual(nego.sb_seen, want_sb_data)
-        self.assertEqual(b'', telnet.read_sb_data())
-        nego.sb_getter = None # break the nego => telnet cycle
-
-    def test_debuglevel_reads(self):
-        # test all the various places that self.msg(...) is called
-        given_a_expect_b = [
-            # Telnet.fill_rawq
-            (b'a', ": recv b''\n"),
-            # Telnet.process_rawq
-            (tl.IAC + bytes([88]), ": IAC 88 not recognized\n"),
-            (tl.IAC + tl.DO + bytes([1]), ": IAC DO 1\n"),
-            (tl.IAC + tl.DONT + bytes([1]), ": IAC DONT 1\n"),
-            (tl.IAC + tl.WILL + bytes([1]), ": IAC WILL 1\n"),
-            (tl.IAC + tl.WONT + bytes([1]), ": IAC WONT 1\n"),
-           ]
-        for a, b in given_a_expect_b:
-            telnet = test_telnet([a])
-            telnet.set_debuglevel(1)
-            txt = telnet.read_all()
-            self.assertIn(b, telnet._messages)
-        return
-
-    def test_debuglevel_write(self):
-        telnet = test_telnet()
-        telnet.set_debuglevel(1)
-        telnet.write(b'xxx')
-        expected = "send b'xxx'\n"
-        self.assertIn(expected, telnet._messages)
-
-    def test_debug_accepts_str_port(self):
-        # Issue 10695
-        with test_socket([]):
-            telnet = TelnetAlike('dummy', '0')
-            telnet._messages = ''
-        telnet.set_debuglevel(1)
-        telnet.msg('test')
-        self.assertRegex(telnet._messages, r'0.*test')
-
-
-class ExpectTests(ExpectAndReadTestCase):
-    def test_expect(self):
-        """
-        expect(expected, [timeout])
-          Read until the expected string has been seen, or a timeout is
-          hit (default is no timeout); may block.
-        """
-        want = [b'x' * 10, b'match', b'y' * 10]
-        telnet = test_telnet(want)
-        (_,_,data) = telnet.expect([b'match'])
-        self.assertEqual(data, b''.join(want[:-1]))
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index db08fb1c7f2a42..b64b6a4f2baeb5 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -1641,6 +1641,28 @@ def test_explicit_cleanup_ignore_errors(self):
                 temp_path.exists(),
                 f"TemporaryDirectory {temp_path!s} exists after cleanup")
 
+    @unittest.skipUnless(os.name == "nt", "Only on Windows.")
+    def test_explicit_cleanup_correct_error(self):
+        with tempfile.TemporaryDirectory() as working_dir:
+            temp_dir = self.do_create(dir=working_dir)
+            with open(os.path.join(temp_dir.name, "example.txt"), 'wb'):
+                # Previously raised NotADirectoryError on some OSes
+                # (e.g. Windows). See bpo-43153.
+                with self.assertRaises(PermissionError):
+                    temp_dir.cleanup()
+
+    @unittest.skipUnless(os.name == "nt", "Only on Windows.")
+    def test_cleanup_with_used_directory(self):
+        with tempfile.TemporaryDirectory() as working_dir:
+            temp_dir = self.do_create(dir=working_dir)
+            subdir = os.path.join(temp_dir.name, "subdir")
+            os.mkdir(subdir)
+            with os_helper.change_cwd(subdir):
+                # Previously raised RecursionError on some OSes
+                # (e.g. Windows). See bpo-35144.
+                with self.assertRaises(PermissionError):
+                    temp_dir.cleanup()
+
     @os_helper.skip_unless_symlink
     def test_cleanup_with_symlink_to_a_directory(self):
         # cleanup() should not follow symlinks to directories (issue #12464)
@@ -1662,6 +1684,103 @@ def test_cleanup_with_symlink_to_a_directory(self):
                          "were deleted")
         d2.cleanup()
 
+    @os_helper.skip_unless_symlink
+    def test_cleanup_with_symlink_modes(self):
+        # cleanup() should not follow symlinks when fixing mode bits (#91133)
+        with self.do_create(recurse=0) as d2:
+            file1 = os.path.join(d2, 'file1')
+            open(file1, 'wb').close()
+            dir1 = os.path.join(d2, 'dir1')
+            os.mkdir(dir1)
+            for mode in range(8):
+                mode <<= 6
+                with self.subTest(mode=format(mode, '03o')):
+                    def test(target, target_is_directory):
+                        d1 = self.do_create(recurse=0)
+                        symlink = os.path.join(d1.name, 'symlink')
+                        os.symlink(target, symlink,
+                                target_is_directory=target_is_directory)
+                        try:
+                            os.chmod(symlink, mode, follow_symlinks=False)
+                        except NotImplementedError:
+                            pass
+                        try:
+                            os.chmod(symlink, mode)
+                        except FileNotFoundError:
+                            pass
+                        os.chmod(d1.name, mode)
+                        d1.cleanup()
+                        self.assertFalse(os.path.exists(d1.name))
+
+                    with self.subTest('nonexisting file'):
+                        test('nonexisting', target_is_directory=False)
+                    with self.subTest('nonexisting dir'):
+                        test('nonexisting', target_is_directory=True)
+
+                    with self.subTest('existing file'):
+                        os.chmod(file1, mode)
+                        old_mode = os.stat(file1).st_mode
+                        test(file1, target_is_directory=False)
+                        new_mode = os.stat(file1).st_mode
+                        self.assertEqual(new_mode, old_mode,
+                                         '%03o != %03o' % (new_mode, old_mode))
+
+                    with self.subTest('existing dir'):
+                        os.chmod(dir1, mode)
+                        old_mode = os.stat(dir1).st_mode
+                        test(dir1, target_is_directory=True)
+                        new_mode = os.stat(dir1).st_mode
+                        self.assertEqual(new_mode, old_mode,
+                                         '%03o != %03o' % (new_mode, old_mode))
+
+    @unittest.skipUnless(hasattr(os, 'chflags'), 'requires os.chflags')
+    @os_helper.skip_unless_symlink
+    def test_cleanup_with_symlink_flags(self):
+        # cleanup() should not follow symlinks when fixing flags (#91133)
+        flags = stat.UF_IMMUTABLE | stat.UF_NOUNLINK
+        self.check_flags(flags)
+
+        with self.do_create(recurse=0) as d2:
+            file1 = os.path.join(d2, 'file1')
+            open(file1, 'wb').close()
+            dir1 = os.path.join(d2, 'dir1')
+            os.mkdir(dir1)
+            def test(target, target_is_directory):
+                d1 = self.do_create(recurse=0)
+                symlink = os.path.join(d1.name, 'symlink')
+                os.symlink(target, symlink,
+                           target_is_directory=target_is_directory)
+                try:
+                    os.chflags(symlink, flags, follow_symlinks=False)
+                except NotImplementedError:
+                    pass
+                try:
+                    os.chflags(symlink, flags)
+                except FileNotFoundError:
+                    pass
+                os.chflags(d1.name, flags)
+                d1.cleanup()
+                self.assertFalse(os.path.exists(d1.name))
+
+            with self.subTest('nonexisting file'):
+                test('nonexisting', target_is_directory=False)
+            with self.subTest('nonexisting dir'):
+                test('nonexisting', target_is_directory=True)
+
+            with self.subTest('existing file'):
+                os.chflags(file1, flags)
+                old_flags = os.stat(file1).st_flags
+                test(file1, target_is_directory=False)
+                new_flags = os.stat(file1).st_flags
+                self.assertEqual(new_flags, old_flags)
+
+            with self.subTest('existing dir'):
+                os.chflags(dir1, flags)
+                old_flags = os.stat(dir1).st_flags
+                test(dir1, target_is_directory=True)
+                new_flags = os.stat(dir1).st_flags
+                self.assertEqual(new_flags, old_flags)
+
     @support.cpython_only
     def test_del_on_collection(self):
         # A TemporaryDirectory is deleted when garbage collected
@@ -1834,9 +1953,27 @@ def test_modes(self):
                     d.cleanup()
                 self.assertFalse(os.path.exists(d.name))
 
-    @unittest.skipUnless(hasattr(os, 'chflags'), 'requires os.lchflags')
+    def check_flags(self, flags):
+        # skip the test if these flags are not supported (ex: FreeBSD 13)
+        filename = os_helper.TESTFN
+        try:
+            open(filename, "w").close()
+            try:
+                os.chflags(filename, flags)
+            except OSError as exc:
+                # "OSError: [Errno 45] Operation not supported"
+                self.skipTest(f"chflags() doesn't support flags "
+                              f"{flags:#b}: {exc}")
+            else:
+                os.chflags(filename, 0)
+        finally:
+            os_helper.unlink(filename)
+
+    @unittest.skipUnless(hasattr(os, 'chflags'), 'requires os.chflags')
     def test_flags(self):
         flags = stat.UF_IMMUTABLE | stat.UF_NOUNLINK
+        self.check_flags(flags)
+
         d = self.do_create(recurse=3, dirs=2, files=2)
         with d:
             # Change files and directories flags recursively.
diff --git a/Lib/test/test_termios.py b/Lib/test/test_termios.py
new file mode 100644
index 00000000000000..58698ffac2d981
--- /dev/null
+++ b/Lib/test/test_termios.py
@@ -0,0 +1,220 @@
+import errno
+import os
+import sys
+import tempfile
+import unittest
+from test.support.import_helper import import_module
+
+termios = import_module('termios')
+
+
+@unittest.skipUnless(hasattr(os, 'openpty'), "need os.openpty()")
+class TestFunctions(unittest.TestCase):
+
+    def setUp(self):
+        master_fd, self.fd = os.openpty()
+        self.addCleanup(os.close, master_fd)
+        self.stream = self.enterContext(open(self.fd, 'wb', buffering=0))
+        tmp = self.enterContext(tempfile.TemporaryFile(mode='wb', buffering=0))
+        self.bad_fd = tmp.fileno()
+
+    def assertRaisesTermiosError(self, errno, callable, *args):
+        with self.assertRaises(termios.error) as cm:
+            callable(*args)
+        self.assertEqual(cm.exception.args[0], errno)
+
+    def test_tcgetattr(self):
+        attrs = termios.tcgetattr(self.fd)
+        self.assertIsInstance(attrs, list)
+        self.assertEqual(len(attrs), 7)
+        for i in range(6):
+            self.assertIsInstance(attrs[i], int)
+        iflag, oflag, cflag, lflag, ispeed, ospeed, cc = attrs
+        self.assertIsInstance(cc, list)
+        self.assertEqual(len(cc), termios.NCCS)
+        for i, x in enumerate(cc):
+            if ((lflag & termios.ICANON) == 0 and
+                (i == termios.VMIN or i == termios.VTIME)):
+                self.assertIsInstance(x, int)
+            else:
+                self.assertIsInstance(x, bytes)
+                self.assertEqual(len(x), 1)
+        self.assertEqual(termios.tcgetattr(self.stream), attrs)
+
+    def test_tcgetattr_errors(self):
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcgetattr, self.bad_fd)
+        self.assertRaises(ValueError, termios.tcgetattr, -1)
+        self.assertRaises(OverflowError, termios.tcgetattr, 2**1000)
+        self.assertRaises(TypeError, termios.tcgetattr, object())
+        self.assertRaises(TypeError, termios.tcgetattr)
+
+    def test_tcsetattr(self):
+        attrs = termios.tcgetattr(self.fd)
+        termios.tcsetattr(self.fd, termios.TCSANOW, attrs)
+        termios.tcsetattr(self.fd, termios.TCSADRAIN, attrs)
+        termios.tcsetattr(self.fd, termios.TCSAFLUSH, attrs)
+        termios.tcsetattr(self.stream, termios.TCSANOW, attrs)
+
+    def test_tcsetattr_errors(self):
+        attrs = termios.tcgetattr(self.fd)
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, tuple(attrs))
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs[:-1])
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs + [0])
+        for i in range(6):
+            attrs2 = attrs[:]
+            attrs2[i] = 2**1000
+            self.assertRaises(OverflowError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs2)
+            attrs2[i] = object()
+            self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs2)
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs[:-1] + [attrs[-1][:-1]])
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs[:-1] + [attrs[-1] + [b'\0']])
+        for i in range(len(attrs[-1])):
+            attrs2 = attrs[:]
+            attrs2[-1] = attrs2[-1][:]
+            attrs2[-1][i] = 2**1000
+            self.assertRaises(OverflowError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs2)
+            attrs2[-1][i] = object()
+            self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs2)
+            attrs2[-1][i] = b''
+            self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs2)
+            attrs2[-1][i] = b'\0\0'
+            self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, attrs2)
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW, object())
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW)
+        self.assertRaisesTermiosError(errno.EINVAL, termios.tcsetattr, self.fd, -1, attrs)
+        self.assertRaises(OverflowError, termios.tcsetattr, self.fd, 2**1000, attrs)
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, object(), attrs)
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcsetattr, self.bad_fd, termios.TCSANOW, attrs)
+        self.assertRaises(ValueError, termios.tcsetattr, -1, termios.TCSANOW, attrs)
+        self.assertRaises(OverflowError, termios.tcsetattr, 2**1000, termios.TCSANOW, attrs)
+        self.assertRaises(TypeError, termios.tcsetattr, object(), termios.TCSANOW, attrs)
+        self.assertRaises(TypeError, termios.tcsetattr, self.fd, termios.TCSANOW)
+
+    def test_tcsendbreak(self):
+        try:
+            termios.tcsendbreak(self.fd, 1)
+        except termios.error as exc:
+            if exc.args[0] == errno.ENOTTY and sys.platform.startswith('freebsd'):
+                self.skipTest('termios.tcsendbreak() is not supported '
+                              'with pseudo-terminals (?) on this platform')
+            raise
+        termios.tcsendbreak(self.stream, 1)
+
+    def test_tcsendbreak_errors(self):
+        self.assertRaises(OverflowError, termios.tcsendbreak, self.fd, 2**1000)
+        self.assertRaises(TypeError, termios.tcsendbreak, self.fd, 0.0)
+        self.assertRaises(TypeError, termios.tcsendbreak, self.fd, object())
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcsendbreak, self.bad_fd, 0)
+        self.assertRaises(ValueError, termios.tcsendbreak, -1, 0)
+        self.assertRaises(OverflowError, termios.tcsendbreak, 2**1000, 0)
+        self.assertRaises(TypeError, termios.tcsendbreak, object(), 0)
+        self.assertRaises(TypeError, termios.tcsendbreak, self.fd)
+
+    def test_tcdrain(self):
+        termios.tcdrain(self.fd)
+        termios.tcdrain(self.stream)
+
+    def test_tcdrain_errors(self):
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcdrain, self.bad_fd)
+        self.assertRaises(ValueError, termios.tcdrain, -1)
+        self.assertRaises(OverflowError, termios.tcdrain, 2**1000)
+        self.assertRaises(TypeError, termios.tcdrain, object())
+        self.assertRaises(TypeError, termios.tcdrain)
+
+    def test_tcflush(self):
+        termios.tcflush(self.fd, termios.TCIFLUSH)
+        termios.tcflush(self.fd, termios.TCOFLUSH)
+        termios.tcflush(self.fd, termios.TCIOFLUSH)
+
+    def test_tcflush_errors(self):
+        self.assertRaisesTermiosError(errno.EINVAL, termios.tcflush, self.fd, -1)
+        self.assertRaises(OverflowError, termios.tcflush, self.fd, 2**1000)
+        self.assertRaises(TypeError, termios.tcflush, self.fd, object())
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcflush, self.bad_fd, termios.TCIFLUSH)
+        self.assertRaises(ValueError, termios.tcflush, -1, termios.TCIFLUSH)
+        self.assertRaises(OverflowError, termios.tcflush, 2**1000, termios.TCIFLUSH)
+        self.assertRaises(TypeError, termios.tcflush, object(), termios.TCIFLUSH)
+        self.assertRaises(TypeError, termios.tcflush, self.fd)
+
+    def test_tcflow(self):
+        termios.tcflow(self.fd, termios.TCOOFF)
+        termios.tcflow(self.fd, termios.TCOON)
+        termios.tcflow(self.fd, termios.TCIOFF)
+        termios.tcflow(self.fd, termios.TCION)
+
+    def test_tcflow_errors(self):
+        self.assertRaisesTermiosError(errno.EINVAL, termios.tcflow, self.fd, -1)
+        self.assertRaises(OverflowError, termios.tcflow, self.fd, 2**1000)
+        self.assertRaises(TypeError, termios.tcflow, self.fd, object())
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcflow, self.bad_fd, termios.TCOON)
+        self.assertRaises(ValueError, termios.tcflow, -1, termios.TCOON)
+        self.assertRaises(OverflowError, termios.tcflow, 2**1000, termios.TCOON)
+        self.assertRaises(TypeError, termios.tcflow, object(), termios.TCOON)
+        self.assertRaises(TypeError, termios.tcflow, self.fd)
+
+    def test_tcgetwinsize(self):
+        size = termios.tcgetwinsize(self.fd)
+        self.assertIsInstance(size, tuple)
+        self.assertEqual(len(size), 2)
+        self.assertIsInstance(size[0], int)
+        self.assertIsInstance(size[1], int)
+        self.assertEqual(termios.tcgetwinsize(self.stream), size)
+
+    def test_tcgetwinsize_errors(self):
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcgetwinsize, self.bad_fd)
+        self.assertRaises(ValueError, termios.tcgetwinsize, -1)
+        self.assertRaises(OverflowError, termios.tcgetwinsize, 2**1000)
+        self.assertRaises(TypeError, termios.tcgetwinsize, object())
+        self.assertRaises(TypeError, termios.tcgetwinsize)
+
+    def test_tcsetwinsize(self):
+        size = termios.tcgetwinsize(self.fd)
+        termios.tcsetwinsize(self.fd, size)
+        termios.tcsetwinsize(self.fd, list(size))
+        termios.tcsetwinsize(self.stream, size)
+
+    def test_tcsetwinsize_errors(self):
+        size = termios.tcgetwinsize(self.fd)
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, size[:-1])
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, size + (0,))
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, object())
+        self.assertRaises(OverflowError, termios.tcsetwinsize, self.fd, (size[0], 2**1000))
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, (size[0], float(size[1])))
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, (size[0], object()))
+        self.assertRaises(OverflowError, termios.tcsetwinsize, self.fd, (2**1000, size[1]))
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, (float(size[0]), size[1]))
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd, (object(), size[1]))
+        self.assertRaisesTermiosError(errno.ENOTTY, termios.tcsetwinsize, self.bad_fd, size)
+        self.assertRaises(ValueError, termios.tcsetwinsize, -1, size)
+        self.assertRaises(OverflowError, termios.tcsetwinsize, 2**1000, size)
+        self.assertRaises(TypeError, termios.tcsetwinsize, object(), size)
+        self.assertRaises(TypeError, termios.tcsetwinsize, self.fd)
+
+
+class TestModule(unittest.TestCase):
+    def test_constants(self):
+        self.assertIsInstance(termios.B0, int)
+        self.assertIsInstance(termios.B38400, int)
+        self.assertIsInstance(termios.TCSANOW, int)
+        self.assertIsInstance(termios.TCSADRAIN, int)
+        self.assertIsInstance(termios.TCSAFLUSH, int)
+        self.assertIsInstance(termios.TCIFLUSH, int)
+        self.assertIsInstance(termios.TCOFLUSH, int)
+        self.assertIsInstance(termios.TCIOFLUSH, int)
+        self.assertIsInstance(termios.TCOOFF, int)
+        self.assertIsInstance(termios.TCOON, int)
+        self.assertIsInstance(termios.TCIOFF, int)
+        self.assertIsInstance(termios.TCION, int)
+        self.assertIsInstance(termios.VTIME, int)
+        self.assertIsInstance(termios.VMIN, int)
+        self.assertIsInstance(termios.NCCS, int)
+        self.assertLess(termios.VTIME, termios.NCCS)
+        self.assertLess(termios.VMIN, termios.NCCS)
+
+    def test_exception(self):
+        self.assertTrue(issubclass(termios.error, Exception))
+        self.assertFalse(issubclass(termios.error, OSError))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_thread.py b/Lib/test/test_thread.py
index 8656fbdd83e9c7..931cb4b797e0b2 100644
--- a/Lib/test/test_thread.py
+++ b/Lib/test/test_thread.py
@@ -155,11 +155,137 @@ def task():
                 started.acquire()
 
             self.assertEqual(str(cm.unraisable.exc_value), "task failed")
-            self.assertIs(cm.unraisable.object, task)
+            self.assertIsNone(cm.unraisable.object)
             self.assertEqual(cm.unraisable.err_msg,
-                             "Exception ignored in thread started by")
+                             f"Exception ignored in thread started by {task!r}")
             self.assertIsNotNone(cm.unraisable.exc_traceback)
 
+    def test_join_thread(self):
+        finished = []
+
+        def task():
+            time.sleep(0.05)
+            finished.append(thread.get_ident())
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            handle.join()
+            self.assertEqual(len(finished), 1)
+            self.assertEqual(handle.ident, finished[0])
+
+    def test_join_thread_already_exited(self):
+        def task():
+            pass
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            time.sleep(0.05)
+            handle.join()
+
+    def test_join_several_times(self):
+        def task():
+            pass
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            handle.join()
+            with self.assertRaisesRegex(ValueError, "not joinable"):
+                handle.join()
+
+    def test_joinable_not_joined(self):
+        handle_destroyed = thread.allocate_lock()
+        handle_destroyed.acquire()
+
+        def task():
+            handle_destroyed.acquire()
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            del handle
+            handle_destroyed.release()
+
+    def test_join_from_self(self):
+        errors = []
+        handles = []
+        start_joinable_thread_returned = thread.allocate_lock()
+        start_joinable_thread_returned.acquire()
+        task_tried_to_join = thread.allocate_lock()
+        task_tried_to_join.acquire()
+
+        def task():
+            start_joinable_thread_returned.acquire()
+            try:
+                handles[0].join()
+            except Exception as e:
+                errors.append(e)
+            finally:
+                task_tried_to_join.release()
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            handles.append(handle)
+            start_joinable_thread_returned.release()
+            # Can still join after joining failed in other thread
+            task_tried_to_join.acquire()
+            handle.join()
+
+        assert len(errors) == 1
+        with self.assertRaisesRegex(RuntimeError, "Cannot join current thread"):
+            raise errors[0]
+
+    def test_detach_from_self(self):
+        errors = []
+        handles = []
+        start_joinable_thread_returned = thread.allocate_lock()
+        start_joinable_thread_returned.acquire()
+        thread_detached = thread.allocate_lock()
+        thread_detached.acquire()
+
+        def task():
+            start_joinable_thread_returned.acquire()
+            try:
+                handles[0].detach()
+            except Exception as e:
+                errors.append(e)
+            finally:
+                thread_detached.release()
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            handles.append(handle)
+            start_joinable_thread_returned.release()
+            thread_detached.acquire()
+            with self.assertRaisesRegex(ValueError, "not joinable"):
+                handle.join()
+
+        assert len(errors) == 0
+
+    def test_detach_then_join(self):
+        lock = thread.allocate_lock()
+        lock.acquire()
+
+        def task():
+            lock.acquire()
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            # detach() returns even though the thread is blocked on lock
+            handle.detach()
+            # join() then cannot be called anymore
+            with self.assertRaisesRegex(ValueError, "not joinable"):
+                handle.join()
+            lock.release()
+
+    def test_join_then_detach(self):
+        def task():
+            pass
+
+        with threading_helper.wait_threads_exit():
+            handle = thread.start_joinable_thread(task)
+            handle.join()
+            with self.assertRaisesRegex(ValueError, "not joinable"):
+                handle.detach()
+
 
 class Barrier:
     def __init__(self, num_threads):
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index 97165264b34bbe..146e2dbc0fc396 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -26,6 +26,11 @@
 from test import lock_tests
 from test import support
 
+try:
+    from test.support import interpreters
+except ModuleNotFoundError:
+    interpreters = None
+
 threading_helper.requires_working_threading(module=True)
 
 # Between fork() and exec(), only async-safe functions are allowed (issues
@@ -35,6 +40,22 @@
 platforms_to_skip = ('netbsd5', 'hp-ux11')
 
 
+def skip_unless_reliable_fork(test):
+    if not support.has_fork_support:
+        return unittest.skip("requires working os.fork()")(test)
+    if sys.platform in platforms_to_skip:
+        return unittest.skip("due to known OS bug related to thread+fork")(test)
+    if support.HAVE_ASAN_FORK_BUG:
+        return unittest.skip("libasan has a pthread_create() dead lock related to thread+fork")(test)
+    return test
+
+
+def requires_subinterpreters(meth):
+    """Decorator to skip a test if subinterpreters are not supported."""
+    return unittest.skipIf(interpreters is None,
+                           'subinterpreters required')(meth)
+
+
 def restore_default_excepthook(testcase):
     testcase.addCleanup(setattr, threading, 'excepthook', threading.excepthook)
     threading.excepthook = threading.__excepthook__
@@ -251,6 +272,14 @@ def f(mutex):
         #Issue 29376
         self.assertTrue(threading._active[tid].is_alive())
         self.assertRegex(repr(threading._active[tid]), '_DummyThread')
+
+        # Issue gh-106236:
+        with self.assertRaises(RuntimeError):
+            threading._active[tid].join()
+        threading._active[tid]._started.clear()
+        with self.assertRaises(RuntimeError):
+            threading._active[tid].is_alive()
+
         del threading._active[tid]
 
     # PyThreadState_SetAsyncExc() is a CPython-only gimmick, not (currently)
@@ -347,8 +376,8 @@ def test_limbo_cleanup(self):
         # Issue 7481: Failure to start thread should cleanup the limbo map.
         def fail_new_thread(*args):
             raise threading.ThreadError()
-        _start_new_thread = threading._start_new_thread
-        threading._start_new_thread = fail_new_thread
+        _start_joinable_thread = threading._start_joinable_thread
+        threading._start_joinable_thread = fail_new_thread
         try:
             t = threading.Thread(target=lambda: None)
             self.assertRaises(threading.ThreadError, t.start)
@@ -356,7 +385,7 @@ def fail_new_thread(*args):
                 t in threading._limbo,
                 "Failed to cleanup _limbo map on failure of Thread.start().")
         finally:
-            threading._start_new_thread = _start_new_thread
+            threading._start_joinable_thread = _start_joinable_thread
 
     def test_finalize_running_thread(self):
         # Issue 1402: the PyGILState_Ensure / _Release functions may be called
@@ -453,6 +482,47 @@ def test_enumerate_after_join(self):
         finally:
             sys.setswitchinterval(old_interval)
 
+    def test_join_from_multiple_threads(self):
+        # Thread.join() should be thread-safe
+        errors = []
+
+        def worker():
+            time.sleep(0.005)
+
+        def joiner(thread):
+            try:
+                thread.join()
+            except Exception as e:
+                errors.append(e)
+
+        for N in range(2, 20):
+            threads = [threading.Thread(target=worker)]
+            for i in range(N):
+                threads.append(threading.Thread(target=joiner,
+                                                args=(threads[0],)))
+            for t in threads:
+                t.start()
+            time.sleep(0.01)
+            for t in threads:
+                t.join()
+            if errors:
+                raise errors[0]
+
+    def test_join_with_timeout(self):
+        lock = _thread.allocate_lock()
+        lock.acquire()
+
+        def worker():
+            lock.acquire()
+
+        thread = threading.Thread(target=worker)
+        thread.start()
+        thread.join(timeout=0.01)
+        assert thread.is_alive()
+        lock.release()
+        thread.join()
+        assert not thread.is_alive()
+
     def test_no_refcycle_through_target(self):
         class RunSelfFunction(object):
             def __init__(self, should_raise):
@@ -531,35 +601,7 @@ def test_daemon_param(self):
         t = threading.Thread(daemon=True)
         self.assertTrue(t.daemon)
 
-    @support.requires_fork()
-    def test_fork_at_exit(self):
-        # bpo-42350: Calling os.fork() after threading._shutdown() must
-        # not log an error.
-        code = textwrap.dedent("""
-            import atexit
-            import os
-            import sys
-            from test.support import wait_process
-
-            # Import the threading module to register its "at fork" callback
-            import threading
-
-            def exit_handler():
-                pid = os.fork()
-                if not pid:
-                    print("child process ok", file=sys.stderr, flush=True)
-                    # child process
-                else:
-                    wait_process(pid, exitcode=0)
-
-            # exit_handler() will be called after threading._shutdown()
-            atexit.register(exit_handler)
-        """)
-        _, out, err = assert_python_ok("-c", code)
-        self.assertEqual(out, b'')
-        self.assertEqual(err.rstrip(), b'child process ok')
-
-    @support.requires_fork()
+    @skip_unless_reliable_fork
     def test_dummy_thread_after_fork(self):
         # Issue #14308: a dummy thread in the active list doesn't mess up
         # the after-fork mechanism.
@@ -591,7 +633,7 @@ def background_thread(evt):
         self.assertEqual(out, b'')
         self.assertEqual(err, b'')
 
-    @support.requires_fork()
+    @skip_unless_reliable_fork
     def test_is_alive_after_fork(self):
         # Try hard to trigger #18418: is_alive() could sometimes be True on
         # threads that vanished after a fork.
@@ -627,7 +669,7 @@ def f():
         th.start()
         th.join()
 
-    @support.requires_fork()
+    @skip_unless_reliable_fork
     @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()")
     def test_main_thread_after_fork(self):
         code = """if 1:
@@ -648,8 +690,7 @@ def test_main_thread_after_fork(self):
         self.assertEqual(err, b"")
         self.assertEqual(data, "MainThread\nTrue\nTrue\n")
 
-    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
-    @support.requires_fork()
+    @skip_unless_reliable_fork
     @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()")
     def test_main_thread_after_fork_from_nonmain_thread(self):
         code = """if 1:
@@ -1048,6 +1089,22 @@ def import_threading():
         self.assertEqual(out, b'')
         self.assertEqual(err, b'')
 
+    def test_start_new_thread_at_exit(self):
+        code = """if 1:
+            import atexit
+            import _thread
+
+            def f():
+                print("shouldn't be printed")
+
+            def exit_handler():
+                _thread.start_new_thread(f, ())
+
+            atexit.register(exit_handler)
+        """
+        _, out, err = assert_python_ok("-c", code)
+        self.assertEqual(out, b'')
+        self.assertIn(b"can't create new thread at interpreter shutdown", err)
 
 class ThreadJoinOnShutdown(BaseTestCase):
 
@@ -1080,8 +1137,7 @@ def test_1_join_on_shutdown(self):
             """
         self._run_and_join(script)
 
-    @support.requires_fork()
-    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    @skip_unless_reliable_fork
     def test_2_join_in_forked_process(self):
         # Like the test above, but from a forked interpreter
         script = """if 1:
@@ -1101,8 +1157,7 @@ def test_2_join_in_forked_process(self):
             """
         self._run_and_join(script)
 
-    @support.requires_fork()
-    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    @skip_unless_reliable_fork
     def test_3_join_in_forked_from_thread(self):
         # Like the test above, but fork() was called from a worker thread
         # In the forked process, the main Thread object must be marked as stopped.
@@ -1172,8 +1227,7 @@ def main():
         rc, out, err = assert_python_ok('-c', script)
         self.assertFalse(err)
 
-    @support.requires_fork()
-    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    @skip_unless_reliable_fork
     def test_reinit_tls_after_fork(self):
         # Issue #13817: fork() would deadlock in a multithreaded program with
         # the ad-hoc TLS implementation.
@@ -1199,7 +1253,7 @@ def do_fork_and_wait():
             for t in threads:
                 t.join()
 
-    @support.requires_fork()
+    @skip_unless_reliable_fork
     def test_clear_threads_states_after_fork(self):
         # Issue #17094: check that threads states are cleared after fork()
 
@@ -1302,6 +1356,44 @@ def f():
         # The thread was joined properly.
         self.assertEqual(os.read(r, 1), b"x")
 
+    @requires_subinterpreters
+    def test_threads_join_with_no_main(self):
+        r_interp, w_interp = self.pipe()
+
+        INTERP = b'I'
+        FINI = b'F'
+        DONE = b'D'
+
+        interp = interpreters.create()
+        interp.run(f"""if True:
+            import os
+            import threading
+            import time
+
+            done = False
+
+            def notify_fini():
+                global done
+                done = True
+                os.write({w_interp}, {FINI!r})
+                t.join()
+            threading._register_atexit(notify_fini)
+
+            def task():
+                while not done:
+                    time.sleep(0.1)
+                os.write({w_interp}, {DONE!r})
+            t = threading.Thread(target=task)
+            t.start()
+
+            os.write({w_interp}, {INTERP!r})
+            """)
+        interp.close()
+
+        self.assertEqual(os.read(r_interp, 1), INTERP)
+        self.assertEqual(os.read(r_interp, 1), FINI)
+        self.assertEqual(os.read(r_interp, 1), DONE)
+
     @cpython_only
     def test_daemon_threads_fatal_error(self):
         subinterp_code = f"""if 1:
@@ -1752,6 +1844,30 @@ class PyRLockTests(lock_tests.RLockTests):
 class CRLockTests(lock_tests.RLockTests):
     locktype = staticmethod(threading._CRLock)
 
+    def test_signature(self):  # gh-102029
+        with warnings.catch_warnings(record=True) as warnings_log:
+            threading.RLock()
+        self.assertEqual(warnings_log, [])
+
+        arg_types = [
+            ((1,), {}),
+            ((), {'a': 1}),
+            ((1, 2), {'a': 1}),
+        ]
+        for args, kwargs in arg_types:
+            with self.subTest(args=args, kwargs=kwargs):
+                with self.assertWarns(DeprecationWarning):
+                    threading.RLock(*args, **kwargs)
+
+        # Subtypes with custom `__init__` are allowed (but, not recommended):
+        class CustomRLock(self.locktype):
+            def __init__(self, a, *, b) -> None:
+                super().__init__()
+
+        with warnings.catch_warnings(record=True) as warnings_log:
+            CustomRLock(1, b=2)
+        self.assertEqual(warnings_log, [])
+
 class EventTests(lock_tests.EventTests):
     eventtype = staticmethod(threading.Event)
 
@@ -1759,6 +1875,9 @@ class ConditionAsRLockTests(lock_tests.RLockTests):
     # Condition uses an RLock by default and exports its API.
     locktype = staticmethod(threading.Condition)
 
+    def test_recursion_count(self):
+        self.skipTest("Condition does not expose _recursion_count()")
+
 class ConditionTests(lock_tests.ConditionTests):
     condtype = staticmethod(threading.Condition)
 
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
index 02cc3f43a66a67..3b5640abdb6b89 100644
--- a/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@ -14,6 +14,10 @@
     import _testcapi
 except ImportError:
     _testcapi = None
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = None
 
 from test.support import skip_if_buggy_ucrt_strfptime
 
@@ -761,7 +765,8 @@ def test_short_times(self):
         self.assertIs(lt.tm_zone, None)
 
 
-@unittest.skipIf(_testcapi is None, 'need the _testcapi module')
+@unittest.skipIf(_testcapi is None, 'need the _testinternalcapi module')
+@unittest.skipIf(_testinternalcapi is None, 'need the _testinternalcapi module')
 class CPyTimeTestCase:
     """
     Base class to test the C _PyTime_t API.
@@ -769,7 +774,7 @@ class CPyTimeTestCase:
     OVERFLOW_SECONDS = None
 
     def setUp(self):
-        from _testcapi import SIZEOF_TIME_T
+        from _testinternalcapi import SIZEOF_TIME_T
         bits = SIZEOF_TIME_T * 8 - 1
         self.time_t_min = -2 ** bits
         self.time_t_max = 2 ** bits - 1
@@ -897,39 +902,39 @@ class TestCPyTime(CPyTimeTestCase, unittest.TestCase):
     OVERFLOW_SECONDS = math.ceil((2**63 + 1) / SEC_TO_NS)
 
     def test_FromSeconds(self):
-        from _testcapi import PyTime_FromSeconds
+        from _testinternalcapi import _PyTime_FromSeconds
 
-        # PyTime_FromSeconds() expects a C int, reject values out of range
+        # _PyTime_FromSeconds() expects a C int, reject values out of range
         def c_int_filter(secs):
             return (_testcapi.INT_MIN <= secs <= _testcapi.INT_MAX)
 
-        self.check_int_rounding(lambda secs, rnd: PyTime_FromSeconds(secs),
+        self.check_int_rounding(lambda secs, rnd: _PyTime_FromSeconds(secs),
                                 lambda secs: secs * SEC_TO_NS,
                                 value_filter=c_int_filter)
 
         # test nan
         for time_rnd, _ in ROUNDING_MODES:
             with self.assertRaises(TypeError):
-                PyTime_FromSeconds(float('nan'))
+                _PyTime_FromSeconds(float('nan'))
 
     def test_FromSecondsObject(self):
-        from _testcapi import PyTime_FromSecondsObject
+        from _testinternalcapi import _PyTime_FromSecondsObject
 
         self.check_int_rounding(
-            PyTime_FromSecondsObject,
+            _PyTime_FromSecondsObject,
             lambda secs: secs * SEC_TO_NS)
 
         self.check_float_rounding(
-            PyTime_FromSecondsObject,
+            _PyTime_FromSecondsObject,
             lambda ns: self.decimal_round(ns * SEC_TO_NS))
 
         # test nan
         for time_rnd, _ in ROUNDING_MODES:
             with self.assertRaises(ValueError):
-                PyTime_FromSecondsObject(float('nan'), time_rnd)
+                _PyTime_FromSecondsObject(float('nan'), time_rnd)
 
     def test_AsSecondsDouble(self):
-        from _testcapi import PyTime_AsSecondsDouble
+        from _testinternalcapi import _PyTime_AsSecondsDouble
 
         def float_converter(ns):
             if abs(ns) % SEC_TO_NS == 0:
@@ -937,14 +942,14 @@ def float_converter(ns):
             else:
                 return float(ns) / SEC_TO_NS
 
-        self.check_int_rounding(lambda ns, rnd: PyTime_AsSecondsDouble(ns),
+        self.check_int_rounding(lambda ns, rnd: _PyTime_AsSecondsDouble(ns),
                                 float_converter,
                                 NS_TO_SEC)
 
         # test nan
         for time_rnd, _ in ROUNDING_MODES:
             with self.assertRaises(TypeError):
-                PyTime_AsSecondsDouble(float('nan'))
+                _PyTime_AsSecondsDouble(float('nan'))
 
     def create_decimal_converter(self, denominator):
         denom = decimal.Decimal(denominator)
@@ -956,7 +961,7 @@ def converter(value):
         return converter
 
     def test_AsTimeval(self):
-        from _testcapi import PyTime_AsTimeval
+        from _testinternalcapi import _PyTime_AsTimeval
 
         us_converter = self.create_decimal_converter(US_TO_NS)
 
@@ -973,28 +978,28 @@ def seconds_filter(secs):
         else:
             seconds_filter = self.time_t_filter
 
-        self.check_int_rounding(PyTime_AsTimeval,
+        self.check_int_rounding(_PyTime_AsTimeval,
                                 timeval_converter,
                                 NS_TO_SEC,
                                 value_filter=seconds_filter)
 
-    @unittest.skipUnless(hasattr(_testcapi, 'PyTime_AsTimespec'),
-                         'need _testcapi.PyTime_AsTimespec')
+    @unittest.skipUnless(hasattr(_testinternalcapi, '_PyTime_AsTimespec'),
+                         'need _testinternalcapi._PyTime_AsTimespec')
     def test_AsTimespec(self):
-        from _testcapi import PyTime_AsTimespec
+        from _testinternalcapi import _PyTime_AsTimespec
 
         def timespec_converter(ns):
             return divmod(ns, SEC_TO_NS)
 
-        self.check_int_rounding(lambda ns, rnd: PyTime_AsTimespec(ns),
+        self.check_int_rounding(lambda ns, rnd: _PyTime_AsTimespec(ns),
                                 timespec_converter,
                                 NS_TO_SEC,
                                 value_filter=self.time_t_filter)
 
-    @unittest.skipUnless(hasattr(_testcapi, 'PyTime_AsTimeval_clamp'),
-                         'need _testcapi.PyTime_AsTimeval_clamp')
+    @unittest.skipUnless(hasattr(_testinternalcapi, '_PyTime_AsTimeval_clamp'),
+                         'need _testinternalcapi._PyTime_AsTimeval_clamp')
     def test_AsTimeval_clamp(self):
-        from _testcapi import PyTime_AsTimeval_clamp
+        from _testinternalcapi import _PyTime_AsTimeval_clamp
 
         if sys.platform == 'win32':
             from _testcapi import LONG_MIN, LONG_MAX
@@ -1005,7 +1010,7 @@ def test_AsTimeval_clamp(self):
             tv_sec_min = self.time_t_min
 
         for t in (_PyTime_MIN, _PyTime_MAX):
-            ts = PyTime_AsTimeval_clamp(t, _PyTime.ROUND_CEILING)
+            ts = _PyTime_AsTimeval_clamp(t, _PyTime.ROUND_CEILING)
             with decimal.localcontext() as context:
                 context.rounding = decimal.ROUND_CEILING
                 us = self.decimal_round(decimal.Decimal(t) / US_TO_NS)
@@ -1018,13 +1023,13 @@ def test_AsTimeval_clamp(self):
                 tv_usec = 0
             self.assertEqual(ts, (tv_sec, tv_usec))
 
-    @unittest.skipUnless(hasattr(_testcapi, 'PyTime_AsTimespec_clamp'),
-                         'need _testcapi.PyTime_AsTimespec_clamp')
+    @unittest.skipUnless(hasattr(_testinternalcapi, '_PyTime_AsTimespec_clamp'),
+                         'need _testinternalcapi._PyTime_AsTimespec_clamp')
     def test_AsTimespec_clamp(self):
-        from _testcapi import PyTime_AsTimespec_clamp
+        from _testinternalcapi import _PyTime_AsTimespec_clamp
 
         for t in (_PyTime_MIN, _PyTime_MAX):
-            ts = PyTime_AsTimespec_clamp(t)
+            ts = _PyTime_AsTimespec_clamp(t)
             tv_sec, tv_nsec = divmod(t, NS_TO_SEC)
             if self.time_t_max < tv_sec:
                 tv_sec = self.time_t_max
@@ -1035,16 +1040,16 @@ def test_AsTimespec_clamp(self):
             self.assertEqual(ts, (tv_sec, tv_nsec))
 
     def test_AsMilliseconds(self):
-        from _testcapi import PyTime_AsMilliseconds
+        from _testinternalcapi import _PyTime_AsMilliseconds
 
-        self.check_int_rounding(PyTime_AsMilliseconds,
+        self.check_int_rounding(_PyTime_AsMilliseconds,
                                 self.create_decimal_converter(MS_TO_NS),
                                 NS_TO_SEC)
 
     def test_AsMicroseconds(self):
-        from _testcapi import PyTime_AsMicroseconds
+        from _testinternalcapi import _PyTime_AsMicroseconds
 
-        self.check_int_rounding(PyTime_AsMicroseconds,
+        self.check_int_rounding(_PyTime_AsMicroseconds,
                                 self.create_decimal_converter(US_TO_NS),
                                 NS_TO_SEC)
 
@@ -1058,13 +1063,13 @@ class TestOldPyTime(CPyTimeTestCase, unittest.TestCase):
     OVERFLOW_SECONDS = 2 ** 64
 
     def test_object_to_time_t(self):
-        from _testcapi import pytime_object_to_time_t
+        from _testinternalcapi import _PyTime_ObjectToTime_t
 
-        self.check_int_rounding(pytime_object_to_time_t,
+        self.check_int_rounding(_PyTime_ObjectToTime_t,
                                 lambda secs: secs,
                                 value_filter=self.time_t_filter)
 
-        self.check_float_rounding(pytime_object_to_time_t,
+        self.check_float_rounding(_PyTime_ObjectToTime_t,
                                   self.decimal_round,
                                   value_filter=self.time_t_filter)
 
@@ -1084,36 +1089,36 @@ def converter(secs):
         return converter
 
     def test_object_to_timeval(self):
-        from _testcapi import pytime_object_to_timeval
+        from _testinternalcapi import _PyTime_ObjectToTimeval
 
-        self.check_int_rounding(pytime_object_to_timeval,
+        self.check_int_rounding(_PyTime_ObjectToTimeval,
                                 lambda secs: (secs, 0),
                                 value_filter=self.time_t_filter)
 
-        self.check_float_rounding(pytime_object_to_timeval,
+        self.check_float_rounding(_PyTime_ObjectToTimeval,
                                   self.create_converter(SEC_TO_US),
                                   value_filter=self.time_t_filter)
 
          # test nan
         for time_rnd, _ in ROUNDING_MODES:
             with self.assertRaises(ValueError):
-                pytime_object_to_timeval(float('nan'), time_rnd)
+                _PyTime_ObjectToTimeval(float('nan'), time_rnd)
 
     def test_object_to_timespec(self):
-        from _testcapi import pytime_object_to_timespec
+        from _testinternalcapi import _PyTime_ObjectToTimespec
 
-        self.check_int_rounding(pytime_object_to_timespec,
+        self.check_int_rounding(_PyTime_ObjectToTimespec,
                                 lambda secs: (secs, 0),
                                 value_filter=self.time_t_filter)
 
-        self.check_float_rounding(pytime_object_to_timespec,
+        self.check_float_rounding(_PyTime_ObjectToTimespec,
                                   self.create_converter(SEC_TO_NS),
                                   value_filter=self.time_t_filter)
 
         # test nan
         for time_rnd, _ in ROUNDING_MODES:
             with self.assertRaises(ValueError):
-                pytime_object_to_timespec(float('nan'), time_rnd)
+                _PyTime_ObjectToTimespec(float('nan'), time_rnd)
 
 @unittest.skipUnless(sys.platform == "darwin", "test weak linking on macOS")
 class TestTimeWeaklinking(unittest.TestCase):
diff --git a/Lib/test/test_timeout.py b/Lib/test/test_timeout.py
index 30e843a423a777..35ff56f1a5ee09 100644
--- a/Lib/test/test_timeout.py
+++ b/Lib/test/test_timeout.py
@@ -148,13 +148,12 @@ def setUp(self):
     def tearDown(self):
         self.sock.close()
 
-    @unittest.skipIf(True, 'need to replace these hosts; see bpo-35518')
     def testConnectTimeout(self):
         # Testing connect timeout is tricky: we need to have IP connectivity
         # to a host that silently drops our packets.  We can't simulate this
         # from Python because it's a function of the underlying TCP/IP stack.
-        # So, the following Snakebite host has been defined:
-        blackhole = resolve_address('blackhole.snakebite.net', 56666)
+        # So, the following port on the pythontest.net host has been defined:
+        blackhole = resolve_address('pythontest.net', 56666)
 
         # Blackhole has been configured to silently drop any incoming packets.
         # No RSTs (for TCP) or ICMP UNREACH (for UDP/ICMP) will be sent back
@@ -166,7 +165,7 @@ def testConnectTimeout(self):
         # to firewalling or general network configuration.  In order to improve
         # our confidence in testing the blackhole, a corresponding 'whitehole'
         # has also been set up using one port higher:
-        whitehole = resolve_address('whitehole.snakebite.net', 56667)
+        whitehole = resolve_address('pythontest.net', 56667)
 
         # This address has been configured to immediately drop any incoming
         # packets as well, but it does it respectfully with regards to the
@@ -180,20 +179,15 @@ def testConnectTimeout(self):
         # timeframe).
 
         # For the records, the whitehole/blackhole configuration has been set
-        # up using the 'pf' firewall (available on BSDs), using the following:
+        # up using the 'iptables' firewall, using the following rules:
         #
-        #   ext_if="bge0"
-        #
-        #   blackhole_ip="35.8.247.6"
-        #   whitehole_ip="35.8.247.6"
-        #   blackhole_port="56666"
-        #   whitehole_port="56667"
-        #
-        #   block return in log quick on $ext_if proto { tcp udp } \
-        #       from any to $whitehole_ip port $whitehole_port
-        #   block drop in log quick on $ext_if proto { tcp udp } \
-        #       from any to $blackhole_ip port $blackhole_port
+        # -A INPUT -p tcp --destination-port 56666 -j DROP
+        # -A INPUT -p udp --destination-port 56666 -j DROP
+        # -A INPUT -p tcp --destination-port 56667 -j REJECT
+        # -A INPUT -p udp --destination-port 56667 -j REJECT
         #
+        # See https://github.com/python/psf-salt/blob/main/pillar/base/firewall/snakebite.sls
+        # for the current configuration.
 
         skip = True
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
diff --git a/Lib/test/test_tix.py b/Lib/test/test_tix.py
deleted file mode 100644
index d0d2a164ad2c67..00000000000000
--- a/Lib/test/test_tix.py
+++ /dev/null
@@ -1,40 +0,0 @@
-import sys
-import unittest
-from test import support
-from test.support import import_helper
-from test.support import check_sanitizer
-
-if check_sanitizer(address=True, memory=True):
-    raise unittest.SkipTest("Tests involving libX11 can SEGFAULT on ASAN/MSAN builds")
-
-
-# Skip this test if the _tkinter module wasn't built.
-_tkinter = import_helper.import_module('_tkinter')
-
-# Skip test if tk cannot be initialized.
-support.requires('gui')
-
-# Suppress the deprecation warning
-tix = import_helper.import_module('tkinter.tix', deprecated=True)
-from tkinter import TclError
-
-
-class TestTix(unittest.TestCase):
-
-    def setUp(self):
-        try:
-            self.root = tix.Tk()
-        except TclError:
-            if sys.platform.startswith('win'):
-                self.fail('Tix should always be available on Windows')
-            self.skipTest('Tix not available')
-        else:
-            self.addCleanup(self.root.destroy)
-
-    def test_tix_available(self):
-        # this test is just here to make setUp run
-        pass
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_tkinter/__init__.py b/Lib/test/test_tkinter/__init__.py
index edcb44951bde36..aa196c12c804ac 100644
--- a/Lib/test/test_tkinter/__init__.py
+++ b/Lib/test/test_tkinter/__init__.py
@@ -1,18 +1,24 @@
 import os.path
 import unittest
-from test import support
-from test.support import import_helper
 
+from test.support import (
+    check_sanitizer,
+    import_helper,
+    load_package_tests,
+    requires,
+    )
 
-if support.check_sanitizer(address=True, memory=True):
+
+if check_sanitizer(address=True, memory=True):
+    # See gh-90791 for details
     raise unittest.SkipTest("Tests involving libX11 can SEGFAULT on ASAN/MSAN builds")
 
 # Skip test if _tkinter wasn't built.
 import_helper.import_module('_tkinter')
 
 # Skip test if tk cannot be initialized.
-support.requires('gui')
+requires('gui')
 
 
 def load_tests(*args):
-    return support.load_package_tests(os.path.dirname(__file__), *args)
+    return load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_tkinter/support.py b/Lib/test/test_tkinter/support.py
index 9154ebac5c48f8..a37705f0ae6feb 100644
--- a/Lib/test/test_tkinter/support.py
+++ b/Lib/test/test_tkinter/support.py
@@ -1,6 +1,5 @@
 import functools
 import tkinter
-import unittest
 
 class AbstractTkTest:
 
@@ -79,28 +78,28 @@ def simulate_mouse_click(widget, x, y):
 
 import _tkinter
 tcl_version = tuple(map(int, _tkinter.TCL_VERSION.split('.')))
+tk_version = tuple(map(int, _tkinter.TK_VERSION.split('.')))
 
-def requires_tcl(*version):
-    if len(version) <= 2:
-        return unittest.skipUnless(tcl_version >= version,
-            'requires Tcl version >= ' + '.'.join(map(str, version)))
+def requires_tk(*version):
+    if len(version) <= 2 and tk_version >= version:
+        return lambda test: test
 
     def deco(test):
         @functools.wraps(test)
         def newtest(self):
-            if get_tk_patchlevel() < version:
-                self.skipTest('requires Tcl version >= ' +
+            root = getattr(self, 'root', None)
+            if get_tk_patchlevel(root) < version:
+                self.skipTest('requires Tk version >= ' +
                                 '.'.join(map(str, version)))
             test(self)
         return newtest
     return deco
 
 _tk_patchlevel = None
-def get_tk_patchlevel():
+def get_tk_patchlevel(root):
     global _tk_patchlevel
     if _tk_patchlevel is None:
-        tcl = tkinter.Tcl()
-        _tk_patchlevel = tcl.info_patchlevel()
+        _tk_patchlevel = tkinter._parse_version(root.tk.globalgetvar('tk_patchLevel'))
     return _tk_patchlevel
 
 units = {
diff --git a/Lib/test/test_tkinter/test_images.py b/Lib/test/test_tkinter/test_images.py
index b6f8b79ae689fa..ef1c99f57c6f47 100644
--- a/Lib/test/test_tkinter/test_images.py
+++ b/Lib/test/test_tkinter/test_images.py
@@ -2,7 +2,7 @@
 import tkinter
 from test import support
 from test.support import os_helper
-from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest, requires_tcl
+from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest, requires_tk
 
 support.requires('gui')
 
@@ -66,7 +66,7 @@ class BitmapImageTest(AbstractTkTest, unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         AbstractTkTest.setUpClass.__func__(cls)
-        cls.testfile = support.findfile('python.xbm', subdir='imghdrdata')
+        cls.testfile = support.findfile('python.xbm', subdir='tkinterdata')
 
     def test_create_from_file(self):
         image = tkinter.BitmapImage('::img::test', master=self.root,
@@ -144,13 +144,21 @@ def test_configure_foreground(self):
         self.assertEqual(image['foreground'],
                          '-foreground {} {} #000000 yellow')
 
+    def test_bug_100814(self):
+        # gh-100814: Passing a callable option value causes AttributeError.
+        with self.assertRaises(tkinter.TclError):
+            tkinter.BitmapImage('::img::test', master=self.root, spam=print)
+        image = tkinter.BitmapImage('::img::test', master=self.root)
+        with self.assertRaises(tkinter.TclError):
+            image.configure(spam=print)
+
 
 class PhotoImageTest(AbstractTkTest, unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
         AbstractTkTest.setUpClass.__func__(cls)
-        cls.testfile = support.findfile('python.gif', subdir='imghdrdata')
+        cls.testfile = support.findfile('python.gif', subdir='tkinterdata')
 
     def create(self):
         return tkinter.PhotoImage('::img::test', master=self.root,
@@ -163,7 +171,7 @@ def colorlist(self, *args):
             return tkinter._join(args)
 
     def check_create_from_file(self, ext):
-        testfile = support.findfile('python.' + ext, subdir='imghdrdata')
+        testfile = support.findfile('python.' + ext, subdir='tkinterdata')
         image = tkinter.PhotoImage('::img::test', master=self.root,
                                    file=testfile)
         self.assertEqual(str(image), '::img::test')
@@ -178,7 +186,7 @@ def check_create_from_file(self, ext):
         self.assertNotIn('::img::test', self.root.image_names())
 
     def check_create_from_data(self, ext):
-        testfile = support.findfile('python.' + ext, subdir='imghdrdata')
+        testfile = support.findfile('python.' + ext, subdir='tkinterdata')
         with open(testfile, 'rb') as f:
             data = f.read()
         image = tkinter.PhotoImage('::img::test', master=self.root,
@@ -213,11 +221,11 @@ def test_create_from_gif_file(self):
     def test_create_from_gif_data(self):
         self.check_create_from_data('gif')
 
-    @requires_tcl(8, 6)
+    @requires_tk(8, 6)
     def test_create_from_png_file(self):
         self.check_create_from_file('png')
 
-    @requires_tcl(8, 6)
+    @requires_tk(8, 6)
     def test_create_from_png_data(self):
         self.check_create_from_data('png')
 
@@ -274,6 +282,14 @@ def test_configure_palette(self):
         image.configure(palette='3/4/2')
         self.assertEqual(image['palette'], '3/4/2')
 
+    def test_bug_100814(self):
+        # gh-100814: Passing a callable option value causes AttributeError.
+        with self.assertRaises(tkinter.TclError):
+            tkinter.PhotoImage('::img::test', master=self.root, spam=print)
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        with self.assertRaises(tkinter.TclError):
+            image.configure(spam=print)
+
     def test_blank(self):
         image = self.create()
         image.blank()
@@ -341,13 +357,18 @@ def test_get(self):
         self.assertRaises(tkinter.TclError, image.get, 15, 16)
 
     def test_write(self):
+        filename = os_helper.TESTFN
+        import locale
+        if locale.getlocale()[0] is None:
+            # Tcl uses Latin1 in the C locale
+            filename = os_helper.TESTFN_ASCII
         image = self.create()
-        self.addCleanup(os_helper.unlink, os_helper.TESTFN)
+        self.addCleanup(os_helper.unlink, filename)
 
-        image.write(os_helper.TESTFN)
+        image.write(filename)
         image2 = tkinter.PhotoImage('::img::test2', master=self.root,
                                     format='ppm',
-                                    file=os_helper.TESTFN)
+                                    file=filename)
         self.assertEqual(str(image2), '::img::test2')
         self.assertEqual(image2.type(), 'photo')
         self.assertEqual(image2.width(), 16)
@@ -355,10 +376,10 @@ def test_write(self):
         self.assertEqual(image2.get(0, 0), image.get(0, 0))
         self.assertEqual(image2.get(15, 8), image.get(15, 8))
 
-        image.write(os_helper.TESTFN, format='gif', from_coords=(4, 6, 6, 9))
+        image.write(filename, format='gif', from_coords=(4, 6, 6, 9))
         image3 = tkinter.PhotoImage('::img::test3', master=self.root,
                                     format='gif',
-                                    file=os_helper.TESTFN)
+                                    file=filename)
         self.assertEqual(str(image3), '::img::test3')
         self.assertEqual(image3.type(), 'photo')
         self.assertEqual(image3.width(), 2)
diff --git a/Lib/test/test_tkinter/test_misc.py b/Lib/test/test_tkinter/test_misc.py
index d1aca58d15fbd8..6639eaaa59936a 100644
--- a/Lib/test/test_tkinter/test_misc.py
+++ b/Lib/test/test_tkinter/test_misc.py
@@ -1,9 +1,10 @@
 import functools
 import unittest
 import tkinter
+from tkinter import TclError
 import enum
 from test import support
-from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest
+from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest, requires_tk
 
 support.requires('gui')
 
@@ -36,6 +37,59 @@ def test_generated_names(self):
         for name in str(b).split('.'):
             self.assertFalse(name.isidentifier(), msg=repr(name))
 
+    @requires_tk(8, 6, 6)
+    def test_tk_busy(self):
+        root = self.root
+        f = tkinter.Frame(root, name='myframe')
+        f2 = tkinter.Frame(root)
+        f.pack()
+        f2.pack()
+        b = tkinter.Button(f)
+        b.pack()
+        f.tk_busy_hold()
+        with self.assertRaisesRegex(TclError, 'unknown option "-spam"'):
+            f.tk_busy_configure(spam='eggs')
+        with self.assertRaisesRegex(TclError, 'unknown option "-spam"'):
+            f.tk_busy_cget('spam')
+        with self.assertRaisesRegex(TclError, 'unknown option "-spam"'):
+            f.tk_busy_configure('spam')
+        self.assertIsInstance(f.tk_busy_configure(), dict)
+
+        self.assertTrue(f.tk_busy_status())
+        self.assertFalse(root.tk_busy_status())
+        self.assertFalse(f2.tk_busy_status())
+        self.assertFalse(b.tk_busy_status())
+        self.assertIn(f, f.tk_busy_current())
+        self.assertIn(f, f.tk_busy_current('*.m?f*me'))
+        self.assertNotIn(f, f.tk_busy_current('*spam'))
+
+        f.tk_busy_forget()
+        self.assertFalse(f.tk_busy_status())
+        self.assertFalse(f.tk_busy_current())
+        with self.assertRaisesRegex(TclError, "can't find busy window"):
+            f.tk_busy_configure()
+        with self.assertRaisesRegex(TclError, "can't find busy window"):
+            f.tk_busy_forget()
+
+    @requires_tk(8, 6, 6)
+    def test_tk_busy_with_cursor(self):
+        root = self.root
+        if root._windowingsystem == 'aqua':
+            self.skipTest('the cursor option is not supported on OSX/Aqua')
+        f = tkinter.Frame(root, name='myframe')
+        f.pack()
+        f.tk_busy_hold(cursor='gumby')
+
+        self.assertEqual(f.tk_busy_cget('cursor'), 'gumby')
+        f.tk_busy_configure(cursor='heart')
+        self.assertEqual(f.tk_busy_cget('cursor'), 'heart')
+        self.assertEqual(f.tk_busy_configure()['cursor'][4], 'heart')
+        self.assertEqual(f.tk_busy_configure('cursor')[4], 'heart')
+
+        f.tk_busy_forget()
+        with self.assertRaisesRegex(TclError, "can't find busy window"):
+            f.tk_busy_cget('cursor')
+
     def test_tk_setPalette(self):
         root = self.root
         root.tk_setPalette('black')
@@ -371,6 +425,329 @@ def test_info_patchlevel(self):
         self.assertTrue(str(vi).startswith(f'{vi.major}.{vi.minor}'))
 
 
+class BindTest(AbstractTkTest, unittest.TestCase):
+
+    def setUp(self):
+        super().setUp()
+        root = self.root
+        self.frame = tkinter.Frame(self.root, class_='Test',
+                                   width=150, height=100)
+        self.frame.pack()
+
+    def assertCommandExist(self, funcid):
+        self.assertEqual(_info_commands(self.root, funcid), (funcid,))
+
+    def assertCommandNotExist(self, funcid):
+        self.assertEqual(_info_commands(self.root, funcid), ())
+
+    def test_bind(self):
+        event = '<Control-Alt-Key-a>'
+        f = self.frame
+        self.assertEqual(f.bind(), ())
+        self.assertEqual(f.bind(event), '')
+        def test1(e): pass
+        def test2(e): pass
+
+        funcid = f.bind(event, test1)
+        self.assertEqual(f.bind(), (event,))
+        script = f.bind(event)
+        self.assertIn(funcid, script)
+        self.assertCommandExist(funcid)
+
+        funcid2 = f.bind(event, test2, add=True)
+        script = f.bind(event)
+        self.assertIn(funcid, script)
+        self.assertIn(funcid2, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+    def test_unbind(self):
+        event = '<Control-Alt-Key-b>'
+        f = self.frame
+        self.assertEqual(f.bind(), ())
+        self.assertEqual(f.bind(event), '')
+        def test1(e): pass
+        def test2(e): pass
+
+        funcid = f.bind(event, test1)
+        funcid2 = f.bind(event, test2, add=True)
+
+        self.assertRaises(TypeError, f.unbind)
+        f.unbind(event)
+        self.assertEqual(f.bind(event), '')
+        self.assertEqual(f.bind(), ())
+
+    def test_unbind2(self):
+        f = self.frame
+        f.wait_visibility()
+        f.focus_force()
+        f.update_idletasks()
+        event = '<Control-Alt-Key-c>'
+        self.assertEqual(f.bind(), ())
+        self.assertEqual(f.bind(event), '')
+        def test1(e): events.append('a')
+        def test2(e): events.append('b')
+        def test3(e): events.append('c')
+
+        funcid = f.bind(event, test1)
+        funcid2 = f.bind(event, test2, add=True)
+        funcid3 = f.bind(event, test3, add=True)
+        events = []
+        f.event_generate(event)
+        self.assertEqual(events, ['a', 'b', 'c'])
+
+        f.unbind(event, funcid2)
+        script = f.bind(event)
+        self.assertNotIn(funcid2, script)
+        self.assertIn(funcid, script)
+        self.assertIn(funcid3, script)
+        self.assertEqual(f.bind(), (event,))
+        self.assertCommandNotExist(funcid2)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid3)
+        events = []
+        f.event_generate(event)
+        self.assertEqual(events, ['a', 'c'])
+
+        f.unbind(event, funcid)
+        f.unbind(event, funcid3)
+        self.assertEqual(f.bind(event), '')
+        self.assertEqual(f.bind(), ())
+        self.assertCommandNotExist(funcid)
+        self.assertCommandNotExist(funcid2)
+        self.assertCommandNotExist(funcid3)
+        events = []
+        f.event_generate(event)
+        self.assertEqual(events, [])
+
+        # non-idempotent
+        self.assertRaises(tkinter.TclError, f.unbind, event, funcid2)
+
+    def test_bind_rebind(self):
+        event = '<Control-Alt-Key-d>'
+        f = self.frame
+        self.assertEqual(f.bind(), ())
+        self.assertEqual(f.bind(event), '')
+        def test1(e): pass
+        def test2(e): pass
+        def test3(e): pass
+
+        funcid = f.bind(event, test1)
+        funcid2 = f.bind(event, test2, add=True)
+        script = f.bind(event)
+        self.assertIn(funcid2, script)
+        self.assertIn(funcid, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+        funcid3 = f.bind(event, test3)
+        script = f.bind(event)
+        self.assertNotIn(funcid, script)
+        self.assertNotIn(funcid2, script)
+        self.assertIn(funcid3, script)
+        self.assertCommandExist(funcid3)
+
+    def test_bind_class(self):
+        event = '<Control-Alt-Key-e>'
+        bind_class = self.root.bind_class
+        unbind_class = self.root.unbind_class
+        self.assertRaises(TypeError, bind_class)
+        self.assertEqual(bind_class('Test'), ())
+        self.assertEqual(bind_class('Test', event), '')
+        self.addCleanup(unbind_class, 'Test', event)
+        def test1(e): pass
+        def test2(e): pass
+
+        funcid = bind_class('Test', event, test1)
+        self.assertEqual(bind_class('Test'), (event,))
+        script = bind_class('Test', event)
+        self.assertIn(funcid, script)
+        self.assertCommandExist(funcid)
+
+        funcid2 = bind_class('Test', event, test2, add=True)
+        script = bind_class('Test', event)
+        self.assertIn(funcid, script)
+        self.assertIn(funcid2, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+    def test_unbind_class(self):
+        event = '<Control-Alt-Key-f>'
+        bind_class = self.root.bind_class
+        unbind_class = self.root.unbind_class
+        self.assertEqual(bind_class('Test'), ())
+        self.assertEqual(bind_class('Test', event), '')
+        self.addCleanup(unbind_class, 'Test', event)
+        def test1(e): pass
+        def test2(e): pass
+
+        funcid = bind_class('Test', event, test1)
+        funcid2 = bind_class('Test', event, test2, add=True)
+
+        self.assertRaises(TypeError, unbind_class)
+        self.assertRaises(TypeError, unbind_class, 'Test')
+        unbind_class('Test', event)
+        self.assertEqual(bind_class('Test', event), '')
+        self.assertEqual(bind_class('Test'), ())
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+        unbind_class('Test', event)  # idempotent
+
+    def test_bind_class_rebind(self):
+        event = '<Control-Alt-Key-g>'
+        bind_class = self.root.bind_class
+        unbind_class = self.root.unbind_class
+        self.assertEqual(bind_class('Test'), ())
+        self.assertEqual(bind_class('Test', event), '')
+        self.addCleanup(unbind_class, 'Test', event)
+        def test1(e): pass
+        def test2(e): pass
+        def test3(e): pass
+
+        funcid = bind_class('Test', event, test1)
+        funcid2 = bind_class('Test', event, test2, add=True)
+        script = bind_class('Test', event)
+        self.assertIn(funcid2, script)
+        self.assertIn(funcid, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+        funcid3 = bind_class('Test', event, test3)
+        script = bind_class('Test', event)
+        self.assertNotIn(funcid, script)
+        self.assertNotIn(funcid2, script)
+        self.assertIn(funcid3, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+        self.assertCommandExist(funcid3)
+
+    def test_bind_all(self):
+        event = '<Control-Alt-Key-h>'
+        bind_all = self.root.bind_all
+        unbind_all = self.root.unbind_all
+        self.assertNotIn(event, bind_all())
+        self.assertEqual(bind_all(event), '')
+        self.addCleanup(unbind_all, event)
+        def test1(e): pass
+        def test2(e): pass
+
+        funcid = bind_all(event, test1)
+        self.assertIn(event, bind_all())
+        script = bind_all(event)
+        self.assertIn(funcid, script)
+        self.assertCommandExist(funcid)
+
+        funcid2 = bind_all(event, test2, add=True)
+        script = bind_all(event)
+        self.assertIn(funcid, script)
+        self.assertIn(funcid2, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+    def test_unbind_all(self):
+        event = '<Control-Alt-Key-i>'
+        bind_all = self.root.bind_all
+        unbind_all = self.root.unbind_all
+        self.assertNotIn(event, bind_all())
+        self.assertEqual(bind_all(event), '')
+        self.addCleanup(unbind_all, event)
+        def test1(e): pass
+        def test2(e): pass
+
+        funcid = bind_all(event, test1)
+        funcid2 = bind_all(event, test2, add=True)
+
+        unbind_all(event)
+        self.assertEqual(bind_all(event), '')
+        self.assertNotIn(event, bind_all())
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+        unbind_all(event)  # idempotent
+
+    def test_bind_all_rebind(self):
+        event = '<Control-Alt-Key-j>'
+        bind_all = self.root.bind_all
+        unbind_all = self.root.unbind_all
+        self.assertNotIn(event, bind_all())
+        self.assertEqual(bind_all(event), '')
+        self.addCleanup(unbind_all, event)
+        def test1(e): pass
+        def test2(e): pass
+        def test3(e): pass
+
+        funcid = bind_all(event, test1)
+        funcid2 = bind_all(event, test2, add=True)
+        script = bind_all(event)
+        self.assertIn(funcid2, script)
+        self.assertIn(funcid, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+
+        funcid3 = bind_all(event, test3)
+        script = bind_all(event)
+        self.assertNotIn(funcid, script)
+        self.assertNotIn(funcid2, script)
+        self.assertIn(funcid3, script)
+        self.assertCommandExist(funcid)
+        self.assertCommandExist(funcid2)
+        self.assertCommandExist(funcid3)
+
+    def test_bindtags(self):
+        f = self.frame
+        self.assertEqual(self.root.bindtags(), ('.', 'Tk', 'all'))
+        self.assertEqual(f.bindtags(), (str(f), 'Test', '.', 'all'))
+        f.bindtags(('a', 'b c'))
+        self.assertEqual(f.bindtags(), ('a', 'b c'))
+
+    def test_bind_events(self):
+        event = '<Enter>'
+        root = self.root
+        t = tkinter.Toplevel(root)
+        f = tkinter.Frame(t, class_='Test', width=150, height=100)
+        f.pack()
+        root.wait_visibility()  # needed on Windows
+        root.update_idletasks()
+        self.addCleanup(root.unbind_class, 'Test', event)
+        self.addCleanup(root.unbind_class, 'Toplevel', event)
+        self.addCleanup(root.unbind_class, 'tag', event)
+        self.addCleanup(root.unbind_class, 'tag2', event)
+        self.addCleanup(root.unbind_all, event)
+        def test(what):
+            return lambda e: events.append((what, e.widget))
+
+        root.bind_all(event, test('all'))
+        root.bind_class('Test', event, test('frame class'))
+        root.bind_class('Toplevel', event, test('toplevel class'))
+        root.bind_class('tag', event, test('tag'))
+        root.bind_class('tag2', event, test('tag2'))
+        f.bind(event, test('frame'))
+        t.bind(event, test('toplevel'))
+
+        events = []
+        f.event_generate(event)
+        self.assertEqual(events, [
+            ('frame', f),
+            ('frame class', f),
+            ('toplevel', f),
+            ('all', f),
+        ])
+
+        events = []
+        t.event_generate(event)
+        self.assertEqual(events, [
+            ('toplevel', t),
+            ('toplevel class', t),
+            ('all', t),
+        ])
+
+        f.bindtags(('tag', 'tag3'))
+        events = []
+        f.event_generate(event)
+        self.assertEqual(events, [('tag', f)])
+
+
 class DefaultRootTest(AbstractDefaultRootTest, unittest.TestCase):
 
     def test_default_root(self):
@@ -426,5 +803,9 @@ def test_mainloop(self):
         self.assertRaises(RuntimeError, tkinter.mainloop)
 
 
+def _info_commands(widget, pattern=None):
+    return widget.tk.splitlist(widget.tk.call('info', 'commands', pattern))
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_tkinter/test_text.py b/Lib/test/test_tkinter/test_text.py
index 328e4256ce0711..f809c4510e3a1f 100644
--- a/Lib/test/test_tkinter/test_text.py
+++ b/Lib/test/test_tkinter/test_text.py
@@ -10,6 +10,7 @@ class TextTest(AbstractTkTest, unittest.TestCase):
     def setUp(self):
         super().setUp()
         self.text = tkinter.Text(self.root)
+        self.text.pack()
 
     def test_debug(self):
         text = self.text
@@ -41,8 +42,6 @@ def test_search(self):
         self.assertEqual(text.search('test', '1.0', 'end'), '1.3')
 
     def test_count(self):
-        # XXX Some assertions do not check against the intended result,
-        # but instead check the current result to prevent regression.
         text = self.text
         text.insert('1.0',
             'Lorem ipsum dolor sit amet,\n'
@@ -53,44 +52,27 @@ def test_count(self):
         options = ('chars', 'indices', 'lines',
                    'displaychars', 'displayindices', 'displaylines',
                    'xpixels', 'ypixels')
-        if self.wantobjects:
-            self.assertEqual(len(text.count('1.0', 'end', *options)), 8)
-        else:
-            text.count('1.0', 'end', *options)
-        self.assertEqual(text.count('1.0', 'end', 'chars', 'lines'), (124, 4)
-                         if self.wantobjects else '124 4')
-        self.assertEqual(text.count('1.3', '4.5', 'chars', 'lines'), (92, 3)
-                         if self.wantobjects else '92 3')
-        self.assertEqual(text.count('4.5', '1.3', 'chars', 'lines'), (-92, -3)
-                         if self.wantobjects else '-92 -3')
-        self.assertEqual(text.count('1.3', '1.3', 'chars', 'lines'), (0, 0)
-                         if self.wantobjects else '0 0')
-        self.assertEqual(text.count('1.0', 'end', 'lines'), (4,)
-                         if self.wantobjects else ('4',))
-        self.assertEqual(text.count('end', '1.0', 'lines'), (-4,)
-                         if self.wantobjects else ('-4',))
-        self.assertEqual(text.count('1.3', '1.5', 'lines'), None
-                         if self.wantobjects else ('0',))
-        self.assertEqual(text.count('1.3', '1.3', 'lines'), None
-                         if self.wantobjects else ('0',))
-        self.assertEqual(text.count('1.0', 'end'), (124,)  # 'indices' by default
-                         if self.wantobjects else ('124',))
+        self.assertEqual(len(text.count('1.0', 'end', *options)), 8)
+        self.assertEqual(text.count('1.0', 'end', 'chars', 'lines'), (124, 4))
+        self.assertEqual(text.count('1.3', '4.5', 'chars', 'lines'), (92, 3))
+        self.assertEqual(text.count('4.5', '1.3', 'chars', 'lines'), (-92, -3))
+        self.assertEqual(text.count('1.3', '1.3', 'chars', 'lines'), (0, 0))
+        self.assertEqual(text.count('1.0', 'end', 'lines'), 4)
+        self.assertEqual(text.count('end', '1.0', 'lines'), -4)
+        self.assertEqual(text.count('1.3', '1.5', 'lines'), 0)
+        self.assertEqual(text.count('1.3', '1.3', 'lines'), 0)
+        self.assertEqual(text.count('1.0', 'end'), 124)  # 'indices' by default
+        self.assertEqual(text.count('1.0', 'end', 'indices'), 124)
         self.assertRaises(tkinter.TclError, text.count, '1.0', 'end', 'spam')
         self.assertRaises(tkinter.TclError, text.count, '1.0', 'end', '-lines')
 
-        self.assertIsInstance(text.count('1.3', '1.5', 'ypixels'), tuple)
-        self.assertIsInstance(text.count('1.3', '1.5', 'update', 'ypixels'), int
-                              if self.wantobjects else str)
-        self.assertEqual(text.count('1.3', '1.3', 'update', 'ypixels'), None
-                         if self.wantobjects else '0')
-        self.assertEqual(text.count('1.3', '1.5', 'update', 'indices'), 2
-                         if self.wantobjects else '2')
-        self.assertEqual(text.count('1.3', '1.3', 'update', 'indices'), None
-                         if self.wantobjects else '0')
-        self.assertEqual(text.count('1.3', '1.5', 'update'), (2,)
-                         if self.wantobjects else ('2',))
-        self.assertEqual(text.count('1.3', '1.3', 'update'), None
-                         if self.wantobjects else ('0',))
+        self.assertIsInstance(text.count('1.3', '1.5', 'ypixels'), int)
+        self.assertIsInstance(text.count('1.3', '1.5', 'update', 'ypixels'), int)
+        self.assertEqual(text.count('1.3', '1.3', 'update', 'ypixels'), 0)
+        self.assertEqual(text.count('1.3', '1.5', 'update', 'indices'), 2)
+        self.assertEqual(text.count('1.3', '1.3', 'update', 'indices'), 0)
+        self.assertEqual(text.count('1.3', '1.5', 'update'), 2)
+        self.assertEqual(text.count('1.3', '1.3', 'update'), 0)
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_tkinter/test_widgets.py b/Lib/test/test_tkinter/test_widgets.py
index ba4ef49078c5a7..d3f942db7baf9a 100644
--- a/Lib/test/test_tkinter/test_widgets.py
+++ b/Lib/test/test_tkinter/test_widgets.py
@@ -4,7 +4,7 @@
 import os
 from test.support import requires
 
-from test.test_tkinter.support import (requires_tcl,
+from test.test_tkinter.support import (requires_tk,
                                   get_tk_patchlevel, widget_eq,
                                   AbstractDefaultRootTest)
 from test.test_tkinter.widget_tests import (
@@ -76,6 +76,8 @@ def test_configure_menu(self):
 
     def test_configure_screen(self):
         widget = self.create()
+        if widget._windowingsystem != 'x11':
+            self.skipTest('Not using Tk for X11')
         self.assertEqual(widget['screen'], '')
         try:
             display = os.environ['DISPLAY']
@@ -611,7 +613,7 @@ def test_configure_inactiveselectbackground(self):
         widget = self.create()
         self.checkColorParam(widget, 'inactiveselectbackground')
 
-    @requires_tcl(8, 6)
+    @requires_tk(8, 6)
     def test_configure_insertunfocussed(self):
         widget = self.create()
         self.checkEnumParam(widget, 'insertunfocussed',
@@ -899,6 +901,12 @@ def test_coords(self):
         c.coords(i, [21, 31, 41, 51, 61, 11])
         self.assertEqual(c.coords(i), [21.0, 31.0, 41.0, 51.0, 61.0, 11.0])
 
+        c.coords(i, (22, 32), (42, 52), (62, 12))
+        self.assertEqual(c.coords(i), [22.0, 32.0, 42.0, 52.0, 62.0, 12.0])
+
+        c.coords(i, [(23, 33), (43, 53), (63, 13)])
+        self.assertEqual(c.coords(i), [23.0, 33.0, 43.0, 53.0, 63.0, 13.0])
+
         c.coords(i, 20, 30, 60, 10)
         self.assertEqual(c.coords(i), [20.0, 30.0, 60.0, 10.0])
         self.assertEqual(c.bbox(i), (18, 8, 62, 32))
@@ -916,7 +924,7 @@ def test_coords(self):
         for i in range(4):
             self.assertIsInstance(coords[i], float)
 
-    @requires_tcl(8, 6)
+    @requires_tk(8, 6)
     def test_moveto(self):
         widget = self.create()
         i1 = widget.create_rectangle(1, 1, 20, 20, tags='group')
@@ -961,7 +969,7 @@ def test_configure_activestyle(self):
         self.checkEnumParam(widget, 'activestyle',
                             'dotbox', 'none', 'underline')
 
-    test_configure_justify = requires_tcl(8, 6, 5)(StandardOptionsTests.test_configure_justify)
+    test_configure_justify = requires_tk(8, 6, 5)(StandardOptionsTests.test_configure_justify)
 
     def test_configure_listvariable(self):
         widget = self.create()
@@ -1100,7 +1108,7 @@ def test_configure_digits(self):
 
     def test_configure_from(self):
         widget = self.create()
-        conv = float if get_tk_patchlevel() >= (8, 6, 10) else float_round
+        conv = float if get_tk_patchlevel(self.root) >= (8, 6, 10) else float_round
         self.checkFloatParam(widget, 'from', 100, 14.9, 15.1, conv=conv)
 
     def test_configure_label(self):
@@ -1227,19 +1235,19 @@ def test_configure_opaqueresize(self):
         widget = self.create()
         self.checkBooleanParam(widget, 'opaqueresize')
 
-    @requires_tcl(8, 6, 5)
+    @requires_tk(8, 6, 5)
     def test_configure_proxybackground(self):
         widget = self.create()
         self.checkColorParam(widget, 'proxybackground')
 
-    @requires_tcl(8, 6, 5)
+    @requires_tk(8, 6, 5)
     def test_configure_proxyborderwidth(self):
         widget = self.create()
         self.checkPixelsParam(widget, 'proxyborderwidth',
                               0, 1.3, 2.9, 6, -2, '10p',
                               conv=False)
 
-    @requires_tcl(8, 6, 5)
+    @requires_tk(8, 6, 5)
     def test_configure_proxyrelief(self):
         widget = self.create()
         self.checkReliefParam(widget, 'proxyrelief')
@@ -1400,10 +1408,13 @@ def test_configure_title(self):
 
     def test_configure_type(self):
         widget = self.create()
+        opts = ('normal, tearoff, or menubar'
+                if widget.info_patchlevel() < (8, 7) else
+                'menubar, normal, or tearoff')
         self.checkEnumParam(
             widget, 'type',
             'normal', 'tearoff', 'menubar',
-            errmsg='bad type "{}": must be normal, tearoff, or menubar',
+            errmsg='bad type "{}": must be ' + opts,
             )
 
     def test_entryconfigure(self):
diff --git a/Lib/test/test_tkinter/widget_tests.py b/Lib/test/test_tkinter/widget_tests.py
index 85b0511aba3c7a..31f82f459beefd 100644
--- a/Lib/test/test_tkinter/widget_tests.py
+++ b/Lib/test/test_tkinter/widget_tests.py
@@ -1,7 +1,7 @@
 # Common tests for test_tkinter/test_widgets.py and test_ttk/test_widgets.py
 
 import tkinter
-from test.test_tkinter.support import (AbstractTkTest, tcl_version,
+from test.test_tkinter.support import (AbstractTkTest, tk_version,
                                   pixels_conv, tcl_obj_eq)
 import test.support
 
@@ -22,7 +22,7 @@ def scaling(self):
             return self._scaling
 
     def _str(self, value):
-        if not self._stringify and self.wantobjects and tcl_version >= (8, 6):
+        if not self._stringify and self.wantobjects and tk_version >= (8, 6):
             return value
         if isinstance(value, tuple):
             return ' '.join(map(self._str, value))
@@ -156,7 +156,7 @@ def checkReliefParam(self, widget, name):
                          'flat', 'groove', 'raised', 'ridge', 'solid', 'sunken')
         errmsg='bad relief "spam": must be '\
                'flat, groove, raised, ridge, solid, or sunken'
-        if tcl_version < (8, 6):
+        if tk_version < (8, 6):
             errmsg = None
         self.checkInvalidParam(widget, name, 'spam',
                 errmsg=errmsg)
@@ -250,7 +250,7 @@ def test_configure_bitmap(self):
         widget = self.create()
         self.checkParam(widget, 'bitmap', 'questhead')
         self.checkParam(widget, 'bitmap', 'gray50')
-        filename = test.support.findfile('python.xbm', subdir='imghdrdata')
+        filename = test.support.findfile('python.xbm', subdir='tkinterdata')
         self.checkParam(widget, 'bitmap', '@' + filename)
         # Cocoa Tk widgets don't detect invalid -bitmap values
         # See https://core.tcl.tk/tk/info/31cd33dbf0
diff --git a/Lib/test/test_tokenize.py b/Lib/test/test_tokenize.py
index 911b53e5816588..290f4608c5e739 100644
--- a/Lib/test/test_tokenize.py
+++ b/Lib/test/test_tokenize.py
@@ -1,19 +1,15 @@
-from test import support
-from test.support import os_helper
-from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
-                     STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
-                     open as tokenize_open, Untokenizer, generate_tokens,
-                     NEWLINE, _generate_tokens_from_c_tokenizer, DEDENT)
-from io import BytesIO, StringIO
+import os
+import token
+import tokenize
 import unittest
+from io import BytesIO, StringIO
 from textwrap import dedent
 from unittest import TestCase, mock
+from test import support
 from test.test_grammar import (VALID_UNDERSCORE_LITERALS,
                                INVALID_UNDERSCORE_LITERALS)
 from test.support import os_helper
 from test.support.script_helper import run_test_script, make_script, run_python_until_end
-import os
-import token
 
 # Converts a source string into a list of textual representation
 # of the tokens such as:
@@ -25,12 +21,12 @@ def stringify_tokens_from_source(token_generator, source_string):
     missing_trailing_nl = source_string[-1] not in '\r\n'
 
     for type, token, start, end, line in token_generator:
-        if type == ENDMARKER:
+        if type == tokenize.ENDMARKER:
             break
         # Ignore the new line on the last line if the input lacks one
-        if missing_trailing_nl and type == NEWLINE and end[0] == num_lines:
+        if missing_trailing_nl and type == tokenize.NEWLINE and end[0] == num_lines:
             continue
-        type = tok_name[type]
+        type = tokenize.tok_name[type]
         result.append(f"    {type:10} {token!r:13} {start} {end}")
 
     return result
@@ -46,18 +42,37 @@ def check_tokenize(self, s, expected):
         # Format the tokens in s in a table format.
         # The ENDMARKER and final NEWLINE are omitted.
         f = BytesIO(s.encode('utf-8'))
-        result = stringify_tokens_from_source(tokenize(f.readline), s)
+        result = stringify_tokens_from_source(tokenize.tokenize(f.readline), s)
         self.assertEqual(result,
                          ["    ENCODING   'utf-8'       (0, 0) (0, 0)"] +
                          expected.rstrip().splitlines())
 
+    def test_invalid_readline(self):
+        def gen():
+            yield "sdfosdg"
+            yield "sdfosdg"
+        with self.assertRaises(TypeError):
+            list(tokenize.tokenize(gen().__next__))
+
+        def gen():
+            yield b"sdfosdg"
+            yield b"sdfosdg"
+        with self.assertRaises(TypeError):
+            list(tokenize.generate_tokens(gen().__next__))
+
+        def gen():
+            yield "sdfosdg"
+            1/0
+        with self.assertRaises(ZeroDivisionError):
+            list(tokenize.generate_tokens(gen().__next__))
+
     def test_implicit_newline(self):
         # Make sure that the tokenizer puts in an implicit NEWLINE
         # when the input lacks a trailing new line.
         f = BytesIO("x".encode('utf-8'))
-        tokens = list(tokenize(f.readline))
-        self.assertEqual(tokens[-2].type, NEWLINE)
-        self.assertEqual(tokens[-1].type, ENDMARKER)
+        tokens = list(tokenize.tokenize(f.readline))
+        self.assertEqual(tokens[-2].type, tokenize.NEWLINE)
+        self.assertEqual(tokens[-1].type, tokenize.ENDMARKER)
 
     def test_basic(self):
         self.check_tokenize("1 + 1", """\
@@ -84,6 +99,32 @@ def test_basic(self):
     NEWLINE    '\\n'          (4, 26) (4, 27)
     DEDENT     ''            (5, 0) (5, 0)
     """)
+
+        self.check_tokenize("if True:\r\n    # NL\r\n    foo='bar'\r\n\r\n", """\
+    NAME       'if'          (1, 0) (1, 2)
+    NAME       'True'        (1, 3) (1, 7)
+    OP         ':'           (1, 7) (1, 8)
+    NEWLINE    '\\r\\n'        (1, 8) (1, 10)
+    COMMENT    '# NL'        (2, 4) (2, 8)
+    NL         '\\r\\n'        (2, 8) (2, 10)
+    INDENT     '    '        (3, 0) (3, 4)
+    NAME       'foo'         (3, 4) (3, 7)
+    OP         '='           (3, 7) (3, 8)
+    STRING     "\'bar\'"       (3, 8) (3, 13)
+    NEWLINE    '\\r\\n'        (3, 13) (3, 15)
+    NL         '\\r\\n'        (4, 0) (4, 2)
+    DEDENT     ''            (5, 0) (5, 0)
+            """)
+
+        self.check_tokenize("x = 1 + \\\r\n1\r\n", """\
+    NAME       'x'           (1, 0) (1, 1)
+    OP         '='           (1, 2) (1, 3)
+    NUMBER     '1'           (1, 4) (1, 5)
+    OP         '+'           (1, 6) (1, 7)
+    NUMBER     '1'           (2, 0) (2, 1)
+    NEWLINE    '\\r\\n'        (2, 1) (2, 3)
+            """)
+
         indent_error_file = b"""\
 def k(x):
     x += 2
@@ -92,9 +133,18 @@ def k(x):
         readline = BytesIO(indent_error_file).readline
         with self.assertRaisesRegex(IndentationError,
                                     "unindent does not match any "
-                                    "outer indentation level"):
-            for tok in tokenize(readline):
+                                    "outer indentation level") as e:
+            for tok in tokenize.tokenize(readline):
                 pass
+        self.assertEqual(e.exception.lineno, 3)
+        self.assertEqual(e.exception.filename, '<string>')
+        self.assertEqual(e.exception.end_lineno, None)
+        self.assertEqual(e.exception.end_offset, None)
+        self.assertEqual(
+            e.exception.msg,
+            'unindent does not match any outer indentation level')
+        self.assertEqual(e.exception.offset, 9)
+        self.assertEqual(e.exception.text, '  x += 5')
 
     def test_int(self):
         # Ordinary integers and binary operators
@@ -220,8 +270,8 @@ def test_float(self):
     def test_underscore_literals(self):
         def number_token(s):
             f = BytesIO(s.encode('utf-8'))
-            for toktype, token, start, end, line in tokenize(f.readline):
-                if toktype == NUMBER:
+            for toktype, token, start, end, line in tokenize.tokenize(f.readline):
+                if toktype == tokenize.NUMBER:
                     return token
             return 'invalid token'
         for lit in VALID_UNDERSCORE_LITERALS:
@@ -229,7 +279,16 @@ def number_token(s):
                 # this won't work with compound complex inputs
                 continue
             self.assertEqual(number_token(lit), lit)
+        # Valid cases with extra underscores in the tokenize module
+        # See gh-105549 for context
+        extra_valid_cases = {"0_7", "09_99"}
         for lit in INVALID_UNDERSCORE_LITERALS:
+            if lit in extra_valid_cases:
+                continue
+            try:
+                number_token(lit)
+            except tokenize.TokenError:
+                continue
             self.assertNotEqual(number_token(lit), lit)
 
     def test_string(self):
@@ -381,21 +440,181 @@ def test_string(self):
     STRING     'rb"\""a\\\\\\nb\\\\\\nc"\""' (1, 0) (3, 4)
     """)
         self.check_tokenize('f"abc"', """\
-    STRING     'f"abc"'      (1, 0) (1, 6)
+    FSTRING_START 'f"'          (1, 0) (1, 2)
+    FSTRING_MIDDLE 'abc'         (1, 2) (1, 5)
+    FSTRING_END '"'           (1, 5) (1, 6)
     """)
         self.check_tokenize('fR"a{b}c"', """\
-    STRING     'fR"a{b}c"'   (1, 0) (1, 9)
+    FSTRING_START 'fR"'         (1, 0) (1, 3)
+    FSTRING_MIDDLE 'a'           (1, 3) (1, 4)
+    OP         '{'           (1, 4) (1, 5)
+    NAME       'b'           (1, 5) (1, 6)
+    OP         '}'           (1, 6) (1, 7)
+    FSTRING_MIDDLE 'c'           (1, 7) (1, 8)
+    FSTRING_END '"'           (1, 8) (1, 9)
+    """)
+        self.check_tokenize('fR"a{{{b!r}}}c"', """\
+    FSTRING_START 'fR"'         (1, 0) (1, 3)
+    FSTRING_MIDDLE 'a{'          (1, 3) (1, 5)
+    OP         '{'           (1, 6) (1, 7)
+    NAME       'b'           (1, 7) (1, 8)
+    OP         '!'           (1, 8) (1, 9)
+    NAME       'r'           (1, 9) (1, 10)
+    OP         '}'           (1, 10) (1, 11)
+    FSTRING_MIDDLE '}'           (1, 11) (1, 12)
+    FSTRING_MIDDLE 'c'           (1, 13) (1, 14)
+    FSTRING_END '"'           (1, 14) (1, 15)
+    """)
+        self.check_tokenize('f"{{{1+1}}}"', """\
+    FSTRING_START 'f"'          (1, 0) (1, 2)
+    FSTRING_MIDDLE '{'           (1, 2) (1, 3)
+    OP         '{'           (1, 4) (1, 5)
+    NUMBER     '1'           (1, 5) (1, 6)
+    OP         '+'           (1, 6) (1, 7)
+    NUMBER     '1'           (1, 7) (1, 8)
+    OP         '}'           (1, 8) (1, 9)
+    FSTRING_MIDDLE '}'           (1, 9) (1, 10)
+    FSTRING_END '"'           (1, 11) (1, 12)
+    """)
+        self.check_tokenize('f"""{f\'\'\'{f\'{f"{1+1}"}\'}\'\'\'}"""', """\
+    FSTRING_START 'f\"""'        (1, 0) (1, 4)
+    OP         '{'           (1, 4) (1, 5)
+    FSTRING_START "f'''"        (1, 5) (1, 9)
+    OP         '{'           (1, 9) (1, 10)
+    FSTRING_START "f'"          (1, 10) (1, 12)
+    OP         '{'           (1, 12) (1, 13)
+    FSTRING_START 'f"'          (1, 13) (1, 15)
+    OP         '{'           (1, 15) (1, 16)
+    NUMBER     '1'           (1, 16) (1, 17)
+    OP         '+'           (1, 17) (1, 18)
+    NUMBER     '1'           (1, 18) (1, 19)
+    OP         '}'           (1, 19) (1, 20)
+    FSTRING_END '"'           (1, 20) (1, 21)
+    OP         '}'           (1, 21) (1, 22)
+    FSTRING_END "'"           (1, 22) (1, 23)
+    OP         '}'           (1, 23) (1, 24)
+    FSTRING_END "'''"         (1, 24) (1, 27)
+    OP         '}'           (1, 27) (1, 28)
+    FSTRING_END '\"""'         (1, 28) (1, 31)
+    """)
+        self.check_tokenize('f"""     x\nstr(data, encoding={invalid!r})\n"""', """\
+    FSTRING_START 'f\"""'        (1, 0) (1, 4)
+    FSTRING_MIDDLE '     x\\nstr(data, encoding=' (1, 4) (2, 19)
+    OP         '{'           (2, 19) (2, 20)
+    NAME       'invalid'     (2, 20) (2, 27)
+    OP         '!'           (2, 27) (2, 28)
+    NAME       'r'           (2, 28) (2, 29)
+    OP         '}'           (2, 29) (2, 30)
+    FSTRING_MIDDLE ')\\n'         (2, 30) (3, 0)
+    FSTRING_END '\"""'         (3, 0) (3, 3)
+    """)
+        self.check_tokenize('f"""123456789\nsomething{None}bad"""', """\
+    FSTRING_START 'f\"""'        (1, 0) (1, 4)
+    FSTRING_MIDDLE '123456789\\nsomething' (1, 4) (2, 9)
+    OP         '{'           (2, 9) (2, 10)
+    NAME       'None'        (2, 10) (2, 14)
+    OP         '}'           (2, 14) (2, 15)
+    FSTRING_MIDDLE 'bad'         (2, 15) (2, 18)
+    FSTRING_END '\"""'         (2, 18) (2, 21)
     """)
         self.check_tokenize('f"""abc"""', """\
-    STRING     'f\"\"\"abc\"\"\"'  (1, 0) (1, 10)
+    FSTRING_START 'f\"""'        (1, 0) (1, 4)
+    FSTRING_MIDDLE 'abc'         (1, 4) (1, 7)
+    FSTRING_END '\"""'         (1, 7) (1, 10)
     """)
         self.check_tokenize(r'f"abc\
 def"', """\
-    STRING     'f"abc\\\\\\ndef"' (1, 0) (2, 4)
+    FSTRING_START 'f"'          (1, 0) (1, 2)
+    FSTRING_MIDDLE 'abc\\\\\\ndef'  (1, 2) (2, 3)
+    FSTRING_END '"'           (2, 3) (2, 4)
     """)
         self.check_tokenize(r'Rf"abc\
 def"', """\
-    STRING     'Rf"abc\\\\\\ndef"' (1, 0) (2, 4)
+    FSTRING_START 'Rf"'         (1, 0) (1, 3)
+    FSTRING_MIDDLE 'abc\\\\\\ndef'  (1, 3) (2, 3)
+    FSTRING_END '"'           (2, 3) (2, 4)
+    """)
+        self.check_tokenize("f'some words {a+b:.3f} more words {c+d=} final words'", """\
+    FSTRING_START "f'"          (1, 0) (1, 2)
+    FSTRING_MIDDLE 'some words ' (1, 2) (1, 13)
+    OP         '{'           (1, 13) (1, 14)
+    NAME       'a'           (1, 14) (1, 15)
+    OP         '+'           (1, 15) (1, 16)
+    NAME       'b'           (1, 16) (1, 17)
+    OP         ':'           (1, 17) (1, 18)
+    FSTRING_MIDDLE '.3f'         (1, 18) (1, 21)
+    OP         '}'           (1, 21) (1, 22)
+    FSTRING_MIDDLE ' more words ' (1, 22) (1, 34)
+    OP         '{'           (1, 34) (1, 35)
+    NAME       'c'           (1, 35) (1, 36)
+    OP         '+'           (1, 36) (1, 37)
+    NAME       'd'           (1, 37) (1, 38)
+    OP         '='           (1, 38) (1, 39)
+    OP         '}'           (1, 39) (1, 40)
+    FSTRING_MIDDLE ' final words' (1, 40) (1, 52)
+    FSTRING_END "'"           (1, 52) (1, 53)
+    """)
+        self.check_tokenize("""\
+f'''{
+3
+=}'''""", """\
+    FSTRING_START "f'''"        (1, 0) (1, 4)
+    OP         '{'           (1, 4) (1, 5)
+    NL         '\\n'          (1, 5) (1, 6)
+    NUMBER     '3'           (2, 0) (2, 1)
+    NL         '\\n'          (2, 1) (2, 2)
+    OP         '='           (3, 0) (3, 1)
+    OP         '}'           (3, 1) (3, 2)
+    FSTRING_END "'''"         (3, 2) (3, 5)
+    """)
+        self.check_tokenize("""\
+f'''__{
+    x:a
+}__'''""", """\
+    FSTRING_START "f'''"        (1, 0) (1, 4)
+    FSTRING_MIDDLE '__'          (1, 4) (1, 6)
+    OP         '{'           (1, 6) (1, 7)
+    NL         '\\n'          (1, 7) (1, 8)
+    NAME       'x'           (2, 4) (2, 5)
+    OP         ':'           (2, 5) (2, 6)
+    FSTRING_MIDDLE 'a\\n'         (2, 6) (3, 0)
+    OP         '}'           (3, 0) (3, 1)
+    FSTRING_MIDDLE '__'          (3, 1) (3, 3)
+    FSTRING_END "'''"         (3, 3) (3, 6)
+    """)
+        self.check_tokenize("""\
+f'''__{
+    x:a
+    b
+     c
+      d
+}__'''""", """\
+    FSTRING_START "f'''"        (1, 0) (1, 4)
+    FSTRING_MIDDLE '__'          (1, 4) (1, 6)
+    OP         '{'           (1, 6) (1, 7)
+    NL         '\\n'          (1, 7) (1, 8)
+    NAME       'x'           (2, 4) (2, 5)
+    OP         ':'           (2, 5) (2, 6)
+    FSTRING_MIDDLE 'a\\n    b\\n     c\\n      d\\n' (2, 6) (6, 0)
+    OP         '}'           (6, 0) (6, 1)
+    FSTRING_MIDDLE '__'          (6, 1) (6, 3)
+    FSTRING_END "'''"         (6, 3) (6, 6)
+    """)
+        self.check_tokenize("""\
+f'__{
+    x:d
+}__'""", """\
+    FSTRING_START "f'"          (1, 0) (1, 2)
+    FSTRING_MIDDLE '__'          (1, 2) (1, 4)
+    OP         '{'           (1, 4) (1, 5)
+    NL         '\\n'          (1, 5) (1, 6)
+    NAME       'x'           (2, 4) (2, 5)
+    OP         ':'           (2, 5) (2, 6)
+    FSTRING_MIDDLE 'd'           (2, 6) (2, 7)
+    NL         '\\n'          (2, 7) (2, 8)
+    OP         '}'           (3, 0) (3, 1)
+    FSTRING_MIDDLE '__'          (3, 1) (3, 3)
+    FSTRING_END "'"           (3, 3) (3, 4)
     """)
 
     def test_function(self):
@@ -946,29 +1165,53 @@ async def bar(): pass
     DEDENT     ''            (7, 0) (7, 0)
     """)
 
+    def test_newline_after_parenthesized_block_with_comment(self):
+        self.check_tokenize('''\
+[
+    # A comment here
+    1
+]
+''', """\
+    OP         '['           (1, 0) (1, 1)
+    NL         '\\n'          (1, 1) (1, 2)
+    COMMENT    '# A comment here' (2, 4) (2, 20)
+    NL         '\\n'          (2, 20) (2, 21)
+    NUMBER     '1'           (3, 4) (3, 5)
+    NL         '\\n'          (3, 5) (3, 6)
+    OP         ']'           (4, 0) (4, 1)
+    NEWLINE    '\\n'          (4, 1) (4, 2)
+    """)
+
+    def test_closing_parenthesis_from_different_line(self):
+        self.check_tokenize("); x", """\
+    OP         ')'           (1, 0) (1, 1)
+    OP         ';'           (1, 1) (1, 2)
+    NAME       'x'           (1, 3) (1, 4)
+    """)
+
 class GenerateTokensTest(TokenizeTest):
     def check_tokenize(self, s, expected):
         # Format the tokens in s in a table format.
         # The ENDMARKER and final NEWLINE are omitted.
         f = StringIO(s)
-        result = stringify_tokens_from_source(generate_tokens(f.readline), s)
+        result = stringify_tokens_from_source(tokenize.generate_tokens(f.readline), s)
         self.assertEqual(result, expected.rstrip().splitlines())
 
 
 def decistmt(s):
     result = []
-    g = tokenize(BytesIO(s.encode('utf-8')).readline)   # tokenize the string
+    g = tokenize.tokenize(BytesIO(s.encode('utf-8')).readline)   # tokenize the string
     for toknum, tokval, _, _, _  in g:
-        if toknum == NUMBER and '.' in tokval:  # replace NUMBER tokens
+        if toknum == tokenize.NUMBER and '.' in tokval:  # replace NUMBER tokens
             result.extend([
-                (NAME, 'Decimal'),
-                (OP, '('),
-                (STRING, repr(tokval)),
-                (OP, ')')
+                (tokenize.NAME, 'Decimal'),
+                (tokenize.OP, '('),
+                (tokenize.STRING, repr(tokval)),
+                (tokenize.OP, ')')
             ])
         else:
             result.append((toknum, tokval))
-    return untokenize(result).decode('utf-8')
+    return tokenize.untokenize(result).decode('utf-8').strip()
 
 class TestMisc(TestCase):
 
@@ -992,6 +1235,13 @@ def test_decistmt(self):
         self.assertEqual(eval(decistmt(s)),
                          Decimal('-3.217160342717258261933904529E-7'))
 
+    def test___all__(self):
+        expected = token.__all__ + [
+            "TokenInfo", "TokenError", "generate_tokens",
+            "detect_encoding", "untokenize", "open", "tokenize",
+        ]
+        self.assertCountEqual(tokenize.__all__, expected)
+
 
 class TestTokenizerAdheresToPep0263(TestCase):
     """
@@ -999,8 +1249,9 @@ class TestTokenizerAdheresToPep0263(TestCase):
     """
 
     def _testFile(self, filename):
-        path = os.path.join(os.path.dirname(__file__), filename)
-        TestRoundtrip.check_roundtrip(self, open(path, 'rb'))
+        path = os.path.join(os.path.dirname(__file__), 'tokenizedata', filename)
+        with open(path, 'rb') as f:
+            TestRoundtrip.check_roundtrip(self, f)
 
     def test_utf8_coding_cookie_and_no_utf8_bom(self):
         f = 'tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt'
@@ -1040,33 +1291,18 @@ def readline():
             nonlocal first
             if not first:
                 first = True
-                return line
+                yield line
             else:
-                return b''
+                yield b''
 
         # skip the initial encoding token and the end tokens
-        tokens = list(_tokenize(readline, encoding='utf-8'))[1:-2]
-        expected_tokens = [(3, '"ЉЊЈ�Ђ"', (1, 0), (1, 7), '"ЉЊЈ�Ђ"')]
+        tokens = list(tokenize._generate_tokens_from_c_tokenizer(readline().__next__,
+                                                                 encoding='utf-8',
+                                                                 extra_tokens=True))[:-2]
+        expected_tokens = [tokenize.TokenInfo(3, '"ЉЊЈ�Ђ"', (1, 0), (1, 7), '"ЉЊЈ�Ђ"')]
         self.assertEqual(tokens, expected_tokens,
                          "bytes not decoded with encoding")
 
-    def test__tokenize_does_not_decode_with_encoding_none(self):
-        literal = '"ЉЊЈ�Ђ"'
-        first = False
-        def readline():
-            nonlocal first
-            if not first:
-                first = True
-                return literal
-            else:
-                return b''
-
-        # skip the end tokens
-        tokens = list(_tokenize(readline, encoding=None))[:-2]
-        expected_tokens = [(3, '"ЉЊЈ�Ђ"', (1, 0), (1, 7), '"ЉЊЈ�Ђ"')]
-        self.assertEqual(tokens, expected_tokens,
-                         "string not tokenized when encoding is None")
-
 
 class TestDetectEncoding(TestCase):
 
@@ -1087,7 +1323,7 @@ def test_no_bom_no_encoding_cookie(self):
             b'print(something)\n',
             b'do_something(else)\n'
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'utf-8')
         self.assertEqual(consumed_lines, list(lines[:2]))
 
@@ -1097,7 +1333,7 @@ def test_bom_no_cookie(self):
             b'print(something)\n',
             b'do_something(else)\n'
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'utf-8-sig')
         self.assertEqual(consumed_lines,
                          [b'# something\n', b'print(something)\n'])
@@ -1108,7 +1344,7 @@ def test_cookie_first_line_no_bom(self):
             b'print(something)\n',
             b'do_something(else)\n'
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'iso-8859-1')
         self.assertEqual(consumed_lines, [b'# -*- coding: latin-1 -*-\n'])
 
@@ -1118,7 +1354,7 @@ def test_matched_bom_and_cookie_first_line(self):
             b'print(something)\n',
             b'do_something(else)\n'
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'utf-8-sig')
         self.assertEqual(consumed_lines, [b'# coding=utf-8\n'])
 
@@ -1129,7 +1365,7 @@ def test_mismatched_bom_and_cookie_first_line_raises_syntaxerror(self):
             b'do_something(else)\n'
         )
         readline = self.get_readline(lines)
-        self.assertRaises(SyntaxError, detect_encoding, readline)
+        self.assertRaises(SyntaxError, tokenize.detect_encoding, readline)
 
     def test_cookie_second_line_no_bom(self):
         lines = (
@@ -1138,7 +1374,7 @@ def test_cookie_second_line_no_bom(self):
             b'print(something)\n',
             b'do_something(else)\n'
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'ascii')
         expected = [b'#! something\n', b'# vim: set fileencoding=ascii :\n']
         self.assertEqual(consumed_lines, expected)
@@ -1150,7 +1386,7 @@ def test_matched_bom_and_cookie_second_line(self):
             b'print(something)\n',
             b'do_something(else)\n'
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'utf-8-sig')
         self.assertEqual(consumed_lines,
                          [b'#! something\n', b'f# coding=utf-8\n'])
@@ -1163,7 +1399,7 @@ def test_mismatched_bom_and_cookie_second_line_raises_syntaxerror(self):
             b'do_something(else)\n'
         )
         readline = self.get_readline(lines)
-        self.assertRaises(SyntaxError, detect_encoding, readline)
+        self.assertRaises(SyntaxError, tokenize.detect_encoding, readline)
 
     def test_cookie_second_line_noncommented_first_line(self):
         lines = (
@@ -1171,7 +1407,7 @@ def test_cookie_second_line_noncommented_first_line(self):
             b'# vim: set fileencoding=iso8859-15 :\n',
             b"print('\xe2\x82\xac')\n"
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'utf-8')
         expected = [b"print('\xc2\xa3')\n"]
         self.assertEqual(consumed_lines, expected)
@@ -1182,7 +1418,7 @@ def test_cookie_second_line_commented_first_line(self):
             b'# vim: set fileencoding=iso8859-15 :\n',
             b"print('\xe2\x82\xac')\n"
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'iso8859-15')
         expected = [b"#print('\xc2\xa3')\n", b'# vim: set fileencoding=iso8859-15 :\n']
         self.assertEqual(consumed_lines, expected)
@@ -1193,13 +1429,13 @@ def test_cookie_second_line_empty_first_line(self):
             b'# vim: set fileencoding=iso8859-15 :\n',
             b"print('\xe2\x82\xac')\n"
         )
-        encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(lines))
         self.assertEqual(encoding, 'iso8859-15')
         expected = [b'\n', b'# vim: set fileencoding=iso8859-15 :\n']
         self.assertEqual(consumed_lines, expected)
 
     def test_latin1_normalization(self):
-        # See get_normal_name() in tokenizer.c.
+        # See get_normal_name() in Parser/tokenizer/helpers.c.
         encodings = ("latin-1", "iso-8859-1", "iso-latin-1", "latin-1-unix",
                      "iso-8859-1-unix", "iso-latin-1-mac")
         for encoding in encodings:
@@ -1210,21 +1446,21 @@ def test_latin1_normalization(self):
                          b"print(things)\n",
                          b"do_something += 4\n")
                 rl = self.get_readline(lines)
-                found, consumed_lines = detect_encoding(rl)
+                found, consumed_lines = tokenize.detect_encoding(rl)
                 self.assertEqual(found, "iso-8859-1")
 
     def test_syntaxerror_latin1(self):
-        # Issue 14629: need to raise SyntaxError if the first
+        # Issue 14629: need to raise TokenError if the first
         # line(s) have non-UTF-8 characters
         lines = (
             b'print("\xdf")', # Latin-1: LATIN SMALL LETTER SHARP S
             )
         readline = self.get_readline(lines)
-        self.assertRaises(SyntaxError, detect_encoding, readline)
+        self.assertRaises(SyntaxError, tokenize.detect_encoding, readline)
 
 
     def test_utf8_normalization(self):
-        # See get_normal_name() in tokenizer.c.
+        # See get_normal_name() in Parser/tokenizer/helpers.c.
         encodings = ("utf-8", "utf-8-mac", "utf-8-unix")
         for encoding in encodings:
             for rep in ("-", "_"):
@@ -1233,36 +1469,36 @@ def test_utf8_normalization(self):
                          b"# coding: " + enc.encode("ascii") + b"\n",
                          b"1 + 3\n")
                 rl = self.get_readline(lines)
-                found, consumed_lines = detect_encoding(rl)
+                found, consumed_lines = tokenize.detect_encoding(rl)
                 self.assertEqual(found, "utf-8")
 
     def test_short_files(self):
         readline = self.get_readline((b'print(something)\n',))
-        encoding, consumed_lines = detect_encoding(readline)
+        encoding, consumed_lines = tokenize.detect_encoding(readline)
         self.assertEqual(encoding, 'utf-8')
         self.assertEqual(consumed_lines, [b'print(something)\n'])
 
-        encoding, consumed_lines = detect_encoding(self.get_readline(()))
+        encoding, consumed_lines = tokenize.detect_encoding(self.get_readline(()))
         self.assertEqual(encoding, 'utf-8')
         self.assertEqual(consumed_lines, [])
 
         readline = self.get_readline((b'\xef\xbb\xbfprint(something)\n',))
-        encoding, consumed_lines = detect_encoding(readline)
+        encoding, consumed_lines = tokenize.detect_encoding(readline)
         self.assertEqual(encoding, 'utf-8-sig')
         self.assertEqual(consumed_lines, [b'print(something)\n'])
 
         readline = self.get_readline((b'\xef\xbb\xbf',))
-        encoding, consumed_lines = detect_encoding(readline)
+        encoding, consumed_lines = tokenize.detect_encoding(readline)
         self.assertEqual(encoding, 'utf-8-sig')
         self.assertEqual(consumed_lines, [])
 
         readline = self.get_readline((b'# coding: bad\n',))
-        self.assertRaises(SyntaxError, detect_encoding, readline)
+        self.assertRaises(SyntaxError, tokenize.detect_encoding, readline)
 
     def test_false_encoding(self):
         # Issue 18873: "Encoding" detected in non-comment lines
         readline = self.get_readline((b'print("#coding=fake")',))
-        encoding, consumed_lines = detect_encoding(readline)
+        encoding, consumed_lines = tokenize.detect_encoding(readline)
         self.assertEqual(encoding, 'utf-8')
         self.assertEqual(consumed_lines, [b'print("#coding=fake")'])
 
@@ -1275,14 +1511,14 @@ def test_open(self):
             with open(filename, 'w', encoding=encoding) as fp:
                 print("# coding: %s" % encoding, file=fp)
                 print("print('euro:\u20ac')", file=fp)
-            with tokenize_open(filename) as fp:
+            with tokenize.open(filename) as fp:
                 self.assertEqual(fp.encoding, encoding)
                 self.assertEqual(fp.mode, 'r')
 
         # test BOM (no coding cookie)
         with open(filename, 'w', encoding='utf-8-sig') as fp:
             print("print('euro:\u20ac')", file=fp)
-        with tokenize_open(filename) as fp:
+        with tokenize.open(filename) as fp:
             self.assertEqual(fp.encoding, 'utf-8-sig')
             self.assertEqual(fp.mode, 'r')
 
@@ -1309,16 +1545,16 @@ def readline(self):
             ins = Bunk(lines, path)
             # Make sure lacking a name isn't an issue.
             del ins.name
-            detect_encoding(ins.readline)
+            tokenize.detect_encoding(ins.readline)
         with self.assertRaisesRegex(SyntaxError, '.*{}'.format(path)):
             ins = Bunk(lines, path)
-            detect_encoding(ins.readline)
+            tokenize.detect_encoding(ins.readline)
 
     def test_open_error(self):
         # Issue #23840: open() must close the binary file on error
         m = BytesIO(b'#coding:xxx')
         with mock.patch('tokenize._builtin_open', return_value=m):
-            self.assertRaises(SyntaxError, tokenize_open, 'foobar')
+            self.assertRaises(SyntaxError, tokenize.open, 'foobar')
         self.assertTrue(m.closed)
 
 
@@ -1326,17 +1562,20 @@ class TestTokenize(TestCase):
 
     def test_tokenize(self):
         import tokenize as tokenize_module
-        encoding = object()
+        encoding = "utf-8"
         encoding_used = None
         def mock_detect_encoding(readline):
             return encoding, [b'first', b'second']
 
-        def mock__tokenize(readline, encoding):
+        def mock__tokenize(readline, encoding, **kwargs):
             nonlocal encoding_used
             encoding_used = encoding
             out = []
             while True:
-                next_line = readline()
+                try:
+                    next_line = readline()
+                except StopIteration:
+                    return out
                 if next_line:
                     out.append(next_line)
                     continue
@@ -1351,16 +1590,16 @@ def mock_readline():
             return str(counter).encode()
 
         orig_detect_encoding = tokenize_module.detect_encoding
-        orig__tokenize = tokenize_module._tokenize
+        orig_c_token = tokenize_module._generate_tokens_from_c_tokenizer
         tokenize_module.detect_encoding = mock_detect_encoding
-        tokenize_module._tokenize = mock__tokenize
+        tokenize_module._generate_tokens_from_c_tokenizer = mock__tokenize
         try:
-            results = tokenize(mock_readline)
-            self.assertEqual(list(results),
+            results = tokenize.tokenize(mock_readline)
+            self.assertEqual(list(results)[1:],
                              [b'first', b'second', b'1', b'2', b'3', b'4'])
         finally:
             tokenize_module.detect_encoding = orig_detect_encoding
-            tokenize_module._tokenize = orig__tokenize
+            tokenize_module._generate_tokens_from_c_tokenizer = orig_c_token
 
         self.assertEqual(encoding_used, encoding)
 
@@ -1372,23 +1611,23 @@ def test_oneline_defs(self):
         buf = '\n'.join(buf)
 
         # Test that 500 consequent, one-line defs is OK
-        toks = list(tokenize(BytesIO(buf.encode('utf-8')).readline))
+        toks = list(tokenize.tokenize(BytesIO(buf.encode('utf-8')).readline))
         self.assertEqual(toks[-3].string, 'OK') # [-1] is always ENDMARKER
                                                 # [-2] is always NEWLINE
 
     def assertExactTypeEqual(self, opstr, *optypes):
-        tokens = list(tokenize(BytesIO(opstr.encode('utf-8')).readline))
+        tokens = list(tokenize.tokenize(BytesIO(opstr.encode('utf-8')).readline))
         num_optypes = len(optypes)
         self.assertEqual(len(tokens), 3 + num_optypes)
-        self.assertEqual(tok_name[tokens[0].exact_type],
-                         tok_name[ENCODING])
+        self.assertEqual(tokenize.tok_name[tokens[0].exact_type],
+                         tokenize.tok_name[tokenize.ENCODING])
         for i in range(num_optypes):
-            self.assertEqual(tok_name[tokens[i + 1].exact_type],
-                             tok_name[optypes[i]])
-        self.assertEqual(tok_name[tokens[1 + num_optypes].exact_type],
-                         tok_name[token.NEWLINE])
-        self.assertEqual(tok_name[tokens[2 + num_optypes].exact_type],
-                         tok_name[token.ENDMARKER])
+            self.assertEqual(tokenize.tok_name[tokens[i + 1].exact_type],
+                             tokenize.tok_name[optypes[i]])
+        self.assertEqual(tokenize.tok_name[tokens[1 + num_optypes].exact_type],
+                         tokenize.tok_name[token.NEWLINE])
+        self.assertEqual(tokenize.tok_name[tokens[2 + num_optypes].exact_type],
+                         tokenize.tok_name[token.ENDMARKER])
 
     def test_exact_type(self):
         self.assertExactTypeEqual('()', token.LPAR, token.RPAR)
@@ -1438,11 +1677,11 @@ def test_exact_type(self):
         self.assertExactTypeEqual('@=', token.ATEQUAL)
 
         self.assertExactTypeEqual('a**2+b**2==c**2',
-                                  NAME, token.DOUBLESTAR, NUMBER,
+                                  tokenize.NAME, token.DOUBLESTAR, tokenize.NUMBER,
                                   token.PLUS,
-                                  NAME, token.DOUBLESTAR, NUMBER,
+                                  tokenize.NAME, token.DOUBLESTAR, tokenize.NUMBER,
                                   token.EQEQUAL,
-                                  NAME, token.DOUBLESTAR, NUMBER)
+                                  tokenize.NAME, token.DOUBLESTAR, tokenize.NUMBER)
         self.assertExactTypeEqual('{1, 2, 3}',
                                   token.LBRACE,
                                   token.NUMBER, token.COMMA,
@@ -1462,13 +1701,34 @@ def test_pathological_trailing_whitespace(self):
     def test_comment_at_the_end_of_the_source_without_newline(self):
         # See http://bugs.python.org/issue44667
         source = 'b = 1\n\n#test'
-        expected_tokens = [token.NAME, token.EQUAL, token.NUMBER, token.NEWLINE, token.NL, token.COMMENT]
-
-        tokens = list(tokenize(BytesIO(source.encode('utf-8')).readline))
-        self.assertEqual(tok_name[tokens[0].exact_type], tok_name[ENCODING])
-        for i in range(6):
-            self.assertEqual(tok_name[tokens[i + 1].exact_type], tok_name[expected_tokens[i]])
-        self.assertEqual(tok_name[tokens[-1].exact_type], tok_name[token.ENDMARKER])
+        expected_tokens = [
+            tokenize.TokenInfo(type=token.ENCODING, string='utf-8', start=(0, 0), end=(0, 0), line=''),
+            tokenize.TokenInfo(type=token.NAME, string='b', start=(1, 0), end=(1, 1), line='b = 1\n'),
+            tokenize.TokenInfo(type=token.OP, string='=', start=(1, 2), end=(1, 3), line='b = 1\n'),
+            tokenize.TokenInfo(type=token.NUMBER, string='1', start=(1, 4), end=(1, 5), line='b = 1\n'),
+            tokenize.TokenInfo(type=token.NEWLINE, string='\n', start=(1, 5), end=(1, 6), line='b = 1\n'),
+            tokenize.TokenInfo(type=token.NL, string='\n', start=(2, 0), end=(2, 1), line='\n'),
+            tokenize.TokenInfo(type=token.COMMENT, string='#test', start=(3, 0), end=(3, 5), line='#test'),
+            tokenize.TokenInfo(type=token.NL, string='', start=(3, 5), end=(3, 6), line='#test'),
+            tokenize.TokenInfo(type=token.ENDMARKER, string='', start=(4, 0), end=(4, 0), line='')
+        ]
+
+        tokens = list(tokenize.tokenize(BytesIO(source.encode('utf-8')).readline))
+        self.assertEqual(tokens, expected_tokens)
+
+    def test_newline_and_space_at_the_end_of_the_source_without_newline(self):
+        # See https://github.com/python/cpython/issues/105435
+        source = 'a\n '
+        expected_tokens = [
+            tokenize.TokenInfo(token.ENCODING, string='utf-8', start=(0, 0), end=(0, 0), line=''),
+            tokenize.TokenInfo(token.NAME, string='a', start=(1, 0), end=(1, 1), line='a\n'),
+            tokenize.TokenInfo(token.NEWLINE, string='\n', start=(1, 1), end=(1, 2), line='a\n'),
+            tokenize.TokenInfo(token.NL, string='', start=(2, 1), end=(2, 2), line=' '),
+            tokenize.TokenInfo(token.ENDMARKER, string='', start=(3, 0), end=(3, 0), line='')
+        ]
+
+        tokens = list(tokenize.tokenize(BytesIO(source.encode('utf-8')).readline))
+        self.assertEqual(tokens, expected_tokens)
 
     def test_invalid_character_in_fstring_middle(self):
         # See gh-103824
@@ -1487,7 +1747,7 @@ class UntokenizeTest(TestCase):
 
     def test_bad_input_order(self):
         # raise if previous row
-        u = Untokenizer()
+        u = tokenize.Untokenizer()
         u.prev_row = 2
         u.prev_col = 2
         with self.assertRaises(ValueError) as cm:
@@ -1499,7 +1759,7 @@ def test_bad_input_order(self):
 
     def test_backslash_continuation(self):
         # The problem is that <whitespace>\<newline> leaves no token
-        u = Untokenizer()
+        u = tokenize.Untokenizer()
         u.prev_row = 1
         u.prev_col =  1
         u.tokens = []
@@ -1511,17 +1771,17 @@ def test_backslash_continuation(self):
         TestRoundtrip.check_roundtrip(self, 'a\n  b\n    c\n  \\\n  c\n')
 
     def test_iter_compat(self):
-        u = Untokenizer()
-        token = (NAME, 'Hello')
-        tokens = [(ENCODING, 'utf-8'), token]
+        u = tokenize.Untokenizer()
+        token = (tokenize.NAME, 'Hello')
+        tokens = [(tokenize.ENCODING, 'utf-8'), token]
         u.compat(token, iter([]))
         self.assertEqual(u.tokens, ["Hello "])
-        u = Untokenizer()
+        u = tokenize.Untokenizer()
         self.assertEqual(u.untokenize(iter([token])), 'Hello ')
-        u = Untokenizer()
+        u = tokenize.Untokenizer()
         self.assertEqual(u.untokenize(iter(tokens)), 'Hello ')
         self.assertEqual(u.encoding, 'utf-8')
-        self.assertEqual(untokenize(iter(tokens)), b'Hello ')
+        self.assertEqual(tokenize.untokenize(iter(tokens)), b'Hello ')
 
 
 class TestRoundtrip(TestCase):
@@ -1543,21 +1803,31 @@ def check_roundtrip(self, f):
             code = f.encode('utf-8')
         else:
             code = f.read()
-            f.close()
         readline = iter(code.splitlines(keepends=True)).__next__
-        tokens5 = list(tokenize(readline))
+        tokens5 = list(tokenize.tokenize(readline))
         tokens2 = [tok[:2] for tok in tokens5]
         # Reproduce tokens2 from pairs
-        bytes_from2 = untokenize(tokens2)
+        bytes_from2 = tokenize.untokenize(tokens2)
         readline2 = iter(bytes_from2.splitlines(keepends=True)).__next__
-        tokens2_from2 = [tok[:2] for tok in tokenize(readline2)]
+        tokens2_from2 = [tok[:2] for tok in tokenize.tokenize(readline2)]
         self.assertEqual(tokens2_from2, tokens2)
         # Reproduce tokens2 from 5-tuples
-        bytes_from5 = untokenize(tokens5)
+        bytes_from5 = tokenize.untokenize(tokens5)
         readline5 = iter(bytes_from5.splitlines(keepends=True)).__next__
-        tokens2_from5 = [tok[:2] for tok in tokenize(readline5)]
+        tokens2_from5 = [tok[:2] for tok in tokenize.tokenize(readline5)]
         self.assertEqual(tokens2_from5, tokens2)
 
+    def check_line_extraction(self, f):
+        if isinstance(f, str):
+            code = f.encode('utf-8')
+        else:
+            code = f.read()
+        readline = iter(code.splitlines(keepends=True)).__next__
+        for tok in tokenize.tokenize(readline):
+            if tok.type in  {tokenize.ENCODING, tokenize.ENDMARKER}:
+                continue
+            self.assertEqual(tok.string, tok.line[tok.start[1]: tok.end[1]])
+
     def test_roundtrip(self):
         # There are some standard formatting practices that are easy to get right.
 
@@ -1573,7 +1843,7 @@ def test_roundtrip(self):
 
         self.check_roundtrip("if x == 1 : \n"
                              "  print(x)\n")
-        fn = support.findfile("tokenize_tests.txt")
+        fn = support.findfile("tokenize_tests.txt", subdir="tokenizedata")
         with open(fn, 'rb') as f:
             self.check_roundtrip(f)
         self.check_roundtrip("if x == 1:\n"
@@ -1628,23 +1898,12 @@ def test_random_files(self):
         # pass the '-ucpu' option to process the full directory.
 
         import glob, random
-        fn = support.findfile("tokenize_tests.txt")
-        tempdir = os.path.dirname(fn) or os.curdir
+        tempdir = os.path.dirname(__file__) or os.curdir
         testfiles = glob.glob(os.path.join(glob.escape(tempdir), "test*.py"))
 
-        # Tokenize is broken on test_pep3131.py because regular expressions are
-        # broken on the obscure unicode identifiers in it. *sigh*
-        # With roundtrip extended to test the 5-tuple mode of untokenize,
-        # 7 more testfiles fail.  Remove them also until the failure is diagnosed.
-
-        testfiles.remove(os.path.join(tempdir, "test_unicode_identifiers.py"))
-
-        # TODO: Remove this once we can unparse PEP 701 syntax
+        # TODO: Remove this once we can untokenize PEP 701 syntax
         testfiles.remove(os.path.join(tempdir, "test_fstring.py"))
 
-        for f in ('buffer', 'builtin', 'fileio', 'inspect', 'os', 'platform', 'sys'):
-            testfiles.remove(os.path.join(tempdir, "test_%s.py") % f)
-
         if not support.is_resource_enabled("cpu"):
             testfiles = random.sample(testfiles, 10)
 
@@ -1654,12 +1913,13 @@ def test_random_files(self):
             with open(testfile, 'rb') as f:
                 with self.subTest(file=testfile):
                     self.check_roundtrip(f)
+                    self.check_line_extraction(f)
 
 
     def roundtrip(self, code):
         if isinstance(code, str):
             code = code.encode('utf-8')
-        return untokenize(tokenize(BytesIO(code).readline)).decode('utf-8')
+        return tokenize.untokenize(tokenize.tokenize(BytesIO(code).readline)).decode('utf-8')
 
     def test_indentation_semantics_retained(self):
         """
@@ -1672,16 +1932,65 @@ def test_indentation_semantics_retained(self):
         self.check_roundtrip(code)
 
 
+class InvalidPythonTests(TestCase):
+    def test_number_followed_by_name(self):
+        # See issue #gh-105549
+        source = "2sin(x)"
+        expected_tokens = [
+            tokenize.TokenInfo(type=token.NUMBER, string='2', start=(1, 0), end=(1, 1), line='2sin(x)'),
+            tokenize.TokenInfo(type=token.NAME, string='sin', start=(1, 1), end=(1, 4), line='2sin(x)'),
+            tokenize.TokenInfo(type=token.OP, string='(', start=(1, 4), end=(1, 5), line='2sin(x)'),
+            tokenize.TokenInfo(type=token.NAME, string='x', start=(1, 5), end=(1, 6), line='2sin(x)'),
+            tokenize.TokenInfo(type=token.OP, string=')', start=(1, 6), end=(1, 7), line='2sin(x)'),
+            tokenize.TokenInfo(type=token.NEWLINE, string='', start=(1, 7), end=(1, 8), line='2sin(x)'),
+            tokenize.TokenInfo(type=token.ENDMARKER, string='', start=(2, 0), end=(2, 0), line='')
+        ]
+
+        tokens = list(tokenize.generate_tokens(StringIO(source).readline))
+        self.assertEqual(tokens, expected_tokens)
+
+    def test_number_starting_with_zero(self):
+        source = "01234"
+        expected_tokens = [
+            tokenize.TokenInfo(type=token.NUMBER, string='01234', start=(1, 0), end=(1, 5), line='01234'),
+            tokenize.TokenInfo(type=token.NEWLINE, string='', start=(1, 5), end=(1, 6), line='01234'),
+            tokenize.TokenInfo(type=token.ENDMARKER, string='', start=(2, 0), end=(2, 0), line='')
+        ]
+
+        tokens = list(tokenize.generate_tokens(StringIO(source).readline))
+        self.assertEqual(tokens, expected_tokens)
+
 class CTokenizeTest(TestCase):
     def check_tokenize(self, s, expected):
         # Format the tokens in s in a table format.
         # The ENDMARKER and final NEWLINE are omitted.
+        f = StringIO(s)
         with self.subTest(source=s):
             result = stringify_tokens_from_source(
-                _generate_tokens_from_c_tokenizer(s), s
+                tokenize._generate_tokens_from_c_tokenizer(f.readline), s
             )
             self.assertEqual(result, expected.rstrip().splitlines())
 
+    def test_encoding(self):
+        def readline(encoding):
+            yield "1+1".encode(encoding)
+
+        expected = [
+            tokenize.TokenInfo(type=tokenize.NUMBER, string='1', start=(1, 0), end=(1, 1), line='1+1'),
+            tokenize.TokenInfo(type=tokenize.OP, string='+', start=(1, 1), end=(1, 2), line='1+1'),
+            tokenize.TokenInfo(type=tokenize.NUMBER, string='1', start=(1, 2), end=(1, 3), line='1+1'),
+            tokenize.TokenInfo(type=tokenize.NEWLINE, string='', start=(1, 3), end=(1, 4), line='1+1'),
+            tokenize.TokenInfo(type=tokenize.ENDMARKER, string='', start=(2, 0), end=(2, 0), line='')
+        ]
+        for encoding in ["utf-8", "latin-1", "utf-16"]:
+            with self.subTest(encoding=encoding):
+                tokens = list(tokenize._generate_tokens_from_c_tokenizer(
+                    readline(encoding).__next__,
+                    extra_tokens=True,
+                    encoding=encoding,
+                ))
+                self.assertEqual(tokens, expected)
+
     def test_int(self):
 
         self.check_tokenize('0xff <= 255', """\
@@ -1951,6 +2260,10 @@ def test_string(self):
 b\
 c"""', """\
     STRING     'rb"\""a\\\\\\nb\\\\\\nc"\""' (1, 0) (3, 4)
+    """)
+
+        self.check_tokenize(r'"hola\\\r\ndfgf"', """\
+    STRING     \'"hola\\\\\\\\\\\\r\\\\ndfgf"\' (1, 0) (1, 16)
     """)
 
         self.check_tokenize('f"abc"', """\
@@ -1980,6 +2293,16 @@ def test_string(self):
     FSTRING_START \'f"\'          (1, 0) (1, 2)
     FSTRING_MIDDLE 'abc\\\\\\ndef'  (1, 2) (2, 3)
     FSTRING_END '"'           (2, 3) (2, 4)
+    """)
+
+        self.check_tokenize('''\
+f"{
+a}"''', """\
+    FSTRING_START 'f"'          (1, 0) (1, 2)
+    LBRACE     '{'           (1, 2) (1, 3)
+    NAME       'a'           (2, 0) (2, 1)
+    RBRACE     '}'           (2, 1) (2, 2)
+    FSTRING_END '"'           (2, 2) (2, 3)
     """)
 
         self.check_tokenize(r'Rf"abc\
@@ -1987,6 +2310,60 @@ def test_string(self):
     FSTRING_START 'Rf"'         (1, 0) (1, 3)
     FSTRING_MIDDLE 'abc\\\\\\ndef'  (1, 3) (2, 3)
     FSTRING_END '"'           (2, 3) (2, 4)
+    """)
+
+        self.check_tokenize(r'f"hola\\\r\ndfgf"', """\
+    FSTRING_START \'f"\'          (1, 0) (1, 2)
+    FSTRING_MIDDLE 'hola\\\\\\\\\\\\r\\\\ndfgf' (1, 2) (1, 16)
+    FSTRING_END \'"\'           (1, 16) (1, 17)
+    """)
+
+        self.check_tokenize("""\
+f'''__{
+    x:a
+}__'''""", """\
+    FSTRING_START "f'''"        (1, 0) (1, 4)
+    FSTRING_MIDDLE '__'          (1, 4) (1, 6)
+    LBRACE     '{'           (1, 6) (1, 7)
+    NAME       'x'           (2, 4) (2, 5)
+    COLON      ':'           (2, 5) (2, 6)
+    FSTRING_MIDDLE 'a\\n'         (2, 6) (3, 0)
+    RBRACE     '}'           (3, 0) (3, 1)
+    FSTRING_MIDDLE '__'          (3, 1) (3, 3)
+    FSTRING_END "'''"         (3, 3) (3, 6)
+    """)
+
+        self.check_tokenize("""\
+f'''__{
+    x:a
+    b
+     c
+      d
+}__'''""", """\
+    FSTRING_START "f'''"        (1, 0) (1, 4)
+    FSTRING_MIDDLE '__'          (1, 4) (1, 6)
+    LBRACE     '{'           (1, 6) (1, 7)
+    NAME       'x'           (2, 4) (2, 5)
+    COLON      ':'           (2, 5) (2, 6)
+    FSTRING_MIDDLE 'a\\n    b\\n     c\\n      d\\n' (2, 6) (6, 0)
+    RBRACE     '}'           (6, 0) (6, 1)
+    FSTRING_MIDDLE '__'          (6, 1) (6, 3)
+    FSTRING_END "'''"         (6, 3) (6, 6)
+    """)
+
+        self.check_tokenize("""\
+f'__{
+    x:d
+}__'""", """\
+    FSTRING_START "f'"          (1, 0) (1, 2)
+    FSTRING_MIDDLE '__'          (1, 2) (1, 4)
+    LBRACE     '{'           (1, 4) (1, 5)
+    NAME       'x'           (2, 4) (2, 5)
+    COLON      ':'           (2, 5) (2, 6)
+    FSTRING_MIDDLE 'd'           (2, 6) (2, 7)
+    RBRACE     '}'           (3, 0) (3, 1)
+    FSTRING_MIDDLE '__'          (3, 1) (3, 3)
+    FSTRING_END "'"           (3, 3) (3, 4)
     """)
 
     def test_function(self):
@@ -2230,7 +2607,7 @@ def test_tabs(self):
     def test_async(self):
 
         self.check_tokenize('async = 1', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     EQUAL      '='           (1, 6) (1, 7)
     NUMBER     '1'           (1, 8) (1, 9)
     """)
@@ -2239,21 +2616,21 @@ def test_async(self):
     NAME       'a'           (1, 0) (1, 1)
     EQUAL      '='           (1, 2) (1, 3)
     LPAR       '('           (1, 4) (1, 5)
-    ASYNC      'async'       (1, 5) (1, 10)
+    NAME       'async'       (1, 5) (1, 10)
     EQUAL      '='           (1, 11) (1, 12)
     NUMBER     '1'           (1, 13) (1, 14)
     RPAR       ')'           (1, 14) (1, 15)
     """)
 
         self.check_tokenize('async()', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     LPAR       '('           (1, 5) (1, 6)
     RPAR       ')'           (1, 6) (1, 7)
     """)
 
         self.check_tokenize('class async(Bar):pass', """\
     NAME       'class'       (1, 0) (1, 5)
-    ASYNC      'async'       (1, 6) (1, 11)
+    NAME       'async'       (1, 6) (1, 11)
     LPAR       '('           (1, 11) (1, 12)
     NAME       'Bar'         (1, 12) (1, 15)
     RPAR       ')'           (1, 15) (1, 16)
@@ -2263,13 +2640,13 @@ def test_async(self):
 
         self.check_tokenize('class async:pass', """\
     NAME       'class'       (1, 0) (1, 5)
-    ASYNC      'async'       (1, 6) (1, 11)
+    NAME       'async'       (1, 6) (1, 11)
     COLON      ':'           (1, 11) (1, 12)
     NAME       'pass'        (1, 12) (1, 16)
     """)
 
         self.check_tokenize('await = 1', """\
-    AWAIT      'await'       (1, 0) (1, 5)
+    NAME       'await'       (1, 0) (1, 5)
     EQUAL      '='           (1, 6) (1, 7)
     NUMBER     '1'           (1, 8) (1, 9)
     """)
@@ -2277,11 +2654,11 @@ def test_async(self):
         self.check_tokenize('foo.async', """\
     NAME       'foo'         (1, 0) (1, 3)
     DOT        '.'           (1, 3) (1, 4)
-    ASYNC      'async'       (1, 4) (1, 9)
+    NAME       'async'       (1, 4) (1, 9)
     """)
 
         self.check_tokenize('async for a in b: pass', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'for'         (1, 6) (1, 9)
     NAME       'a'           (1, 10) (1, 11)
     NAME       'in'          (1, 12) (1, 14)
@@ -2291,7 +2668,7 @@ def test_async(self):
     """)
 
         self.check_tokenize('async with a as b: pass', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'with'        (1, 6) (1, 10)
     NAME       'a'           (1, 11) (1, 12)
     NAME       'as'          (1, 13) (1, 15)
@@ -2301,45 +2678,45 @@ def test_async(self):
     """)
 
         self.check_tokenize('async.foo', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     DOT        '.'           (1, 5) (1, 6)
     NAME       'foo'         (1, 6) (1, 9)
     """)
 
         self.check_tokenize('async', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     """)
 
         self.check_tokenize('async\n#comment\nawait', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NEWLINE    ''            (1, 5) (1, 5)
-    AWAIT      'await'       (3, 0) (3, 5)
+    NAME       'await'       (3, 0) (3, 5)
     """)
 
         self.check_tokenize('async\n...\nawait', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NEWLINE    ''            (1, 5) (1, 5)
     ELLIPSIS   '...'         (2, 0) (2, 3)
     NEWLINE    ''            (2, 3) (2, 3)
-    AWAIT      'await'       (3, 0) (3, 5)
+    NAME       'await'       (3, 0) (3, 5)
     """)
 
         self.check_tokenize('async\nawait', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NEWLINE    ''            (1, 5) (1, 5)
-    AWAIT      'await'       (2, 0) (2, 5)
+    NAME       'await'       (2, 0) (2, 5)
     """)
 
         self.check_tokenize('foo.async + 1', """\
     NAME       'foo'         (1, 0) (1, 3)
     DOT        '.'           (1, 3) (1, 4)
-    ASYNC      'async'       (1, 4) (1, 9)
+    NAME       'async'       (1, 4) (1, 9)
     PLUS       '+'           (1, 10) (1, 11)
     NUMBER     '1'           (1, 12) (1, 13)
     """)
 
         self.check_tokenize('async def foo(): pass', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'def'         (1, 6) (1, 9)
     NAME       'foo'         (1, 10) (1, 13)
     LPAR       '('           (1, 13) (1, 14)
@@ -2356,7 +2733,7 @@ def foo(await):
     await
 async += 1
 ''', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'def'         (1, 6) (1, 9)
     NAME       'foo'         (1, 10) (1, 13)
     LPAR       '('           (1, 13) (1, 14)
@@ -2367,12 +2744,12 @@ def foo(await):
     NAME       'def'         (2, 2) (2, 5)
     NAME       'foo'         (2, 6) (2, 9)
     LPAR       '('           (2, 9) (2, 10)
-    AWAIT      'await'       (2, 10) (2, 15)
+    NAME       'await'       (2, 10) (2, 15)
     RPAR       ')'           (2, 15) (2, 16)
     COLON      ':'           (2, 16) (2, 17)
     NEWLINE    ''            (2, 17) (2, 17)
     INDENT     ''            (3, -1) (3, -1)
-    AWAIT      'await'       (3, 4) (3, 9)
+    NAME       'await'       (3, 4) (3, 9)
     EQUAL      '='           (3, 10) (3, 11)
     NUMBER     '1'           (3, 12) (3, 13)
     NEWLINE    ''            (3, 13) (3, 13)
@@ -2382,18 +2759,18 @@ def foo(await):
     COLON      ':'           (4, 6) (4, 7)
     NEWLINE    ''            (4, 7) (4, 7)
     INDENT     ''            (5, -1) (5, -1)
-    AWAIT      'await'       (5, 4) (5, 9)
+    NAME       'await'       (5, 4) (5, 9)
     NEWLINE    ''            (5, 9) (5, 9)
     DEDENT     ''            (6, -1) (6, -1)
     DEDENT     ''            (6, -1) (6, -1)
-    ASYNC      'async'       (6, 0) (6, 5)
+    NAME       'async'       (6, 0) (6, 5)
     PLUSEQUAL  '+='          (6, 6) (6, 8)
     NUMBER     '1'           (6, 9) (6, 10)
     NEWLINE    ''            (6, 10) (6, 10)
     """)
 
         self.check_tokenize('async def foo():\n  async for i in 1: pass', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'def'         (1, 6) (1, 9)
     NAME       'foo'         (1, 10) (1, 13)
     LPAR       '('           (1, 13) (1, 14)
@@ -2401,7 +2778,7 @@ def foo(await):
     COLON      ':'           (1, 15) (1, 16)
     NEWLINE    ''            (1, 16) (1, 16)
     INDENT     ''            (2, -1) (2, -1)
-    ASYNC      'async'       (2, 2) (2, 7)
+    NAME       'async'       (2, 2) (2, 7)
     NAME       'for'         (2, 8) (2, 11)
     NAME       'i'           (2, 12) (2, 13)
     NAME       'in'          (2, 14) (2, 16)
@@ -2412,14 +2789,14 @@ def foo(await):
     """)
 
         self.check_tokenize('async def foo(async): await', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'def'         (1, 6) (1, 9)
     NAME       'foo'         (1, 10) (1, 13)
     LPAR       '('           (1, 13) (1, 14)
-    ASYNC      'async'       (1, 14) (1, 19)
+    NAME       'async'       (1, 14) (1, 19)
     RPAR       ')'           (1, 19) (1, 20)
     COLON      ':'           (1, 20) (1, 21)
-    AWAIT      'await'       (1, 22) (1, 27)
+    NAME       'await'       (1, 22) (1, 27)
     """)
 
         self.check_tokenize('''\
@@ -2443,7 +2820,7 @@ async def bar(): pass
     COLON      ':'           (3, 11) (3, 12)
     NAME       'pass'        (3, 13) (3, 17)
     NEWLINE    ''            (3, 17) (3, 17)
-    ASYNC      'async'       (4, 2) (4, 7)
+    NAME       'async'       (4, 2) (4, 7)
     NAME       'def'         (4, 8) (4, 11)
     NAME       'bar'         (4, 12) (4, 15)
     LPAR       '('           (4, 15) (4, 16)
@@ -2451,7 +2828,7 @@ async def bar(): pass
     COLON      ':'           (4, 17) (4, 18)
     NAME       'pass'        (4, 19) (4, 23)
     NEWLINE    ''            (4, 23) (4, 23)
-    AWAIT      'await'       (6, 2) (6, 7)
+    NAME       'await'       (6, 2) (6, 7)
     EQUAL      '='           (6, 8) (6, 9)
     NUMBER     '2'           (6, 10) (6, 11)
     DEDENT     ''            (6, -1) (6, -1)
@@ -2464,7 +2841,7 @@ def baz(): pass
   async def bar(): pass
 
   await = 2''', """\
-    ASYNC      'async'       (1, 0) (1, 5)
+    NAME       'async'       (1, 0) (1, 5)
     NAME       'def'         (1, 6) (1, 9)
     NAME       'f'           (1, 10) (1, 11)
     LPAR       '('           (1, 11) (1, 12)
@@ -2479,7 +2856,7 @@ async def bar(): pass
     COLON      ':'           (3, 11) (3, 12)
     NAME       'pass'        (3, 13) (3, 17)
     NEWLINE    ''            (3, 17) (3, 17)
-    ASYNC      'async'       (4, 2) (4, 7)
+    NAME       'async'       (4, 2) (4, 7)
     NAME       'def'         (4, 8) (4, 11)
     NAME       'bar'         (4, 12) (4, 15)
     LPAR       '('           (4, 15) (4, 16)
@@ -2487,7 +2864,7 @@ async def bar(): pass
     COLON      ':'           (4, 17) (4, 18)
     NAME       'pass'        (4, 19) (4, 23)
     NEWLINE    ''            (4, 23) (4, 23)
-    AWAIT      'await'       (6, 2) (6, 7)
+    NAME       'await'       (6, 2) (6, 7)
     EQUAL      '='           (6, 8) (6, 9)
     NUMBER     '2'           (6, 10) (6, 11)
     DEDENT     ''            (6, -1) (6, -1)
@@ -2496,54 +2873,55 @@ async def bar(): pass
     def test_unicode(self):
 
         self.check_tokenize("Örter = u'places'\ngrün = U'green'", """\
-    NAME       'Örter'       (1, 0) (1, 6)
-    EQUAL      '='           (1, 7) (1, 8)
-    STRING     "u'places'"   (1, 9) (1, 18)
-    NEWLINE    ''            (1, 18) (1, 18)
-    NAME       'grün'        (2, 0) (2, 5)
-    EQUAL      '='           (2, 6) (2, 7)
-    STRING     "U'green'"    (2, 8) (2, 16)
+    NAME       'Örter'       (1, 0) (1, 5)
+    EQUAL      '='           (1, 6) (1, 7)
+    STRING     "u'places'"   (1, 8) (1, 17)
+    NEWLINE    ''            (1, 17) (1, 17)
+    NAME       'grün'        (2, 0) (2, 4)
+    EQUAL      '='           (2, 5) (2, 6)
+    STRING     "U'green'"    (2, 7) (2, 15)
     """)
 
     def test_invalid_syntax(self):
         def get_tokens(string):
-            return list(_generate_tokens_from_c_tokenizer(string))
-
-        self.assertRaises(SyntaxError, get_tokens, "(1+2]")
-        self.assertRaises(SyntaxError, get_tokens, "(1+2}")
-        self.assertRaises(SyntaxError, get_tokens, "{1+2]")
-
-        self.assertRaises(SyntaxError, get_tokens, "1_")
-        self.assertRaises(SyntaxError, get_tokens, "1.2_")
-        self.assertRaises(SyntaxError, get_tokens, "1e2_")
-        self.assertRaises(SyntaxError, get_tokens, "1e+")
-
-        self.assertRaises(SyntaxError, get_tokens, "\xa0")
-        self.assertRaises(SyntaxError, get_tokens, "€")
-
-        self.assertRaises(SyntaxError, get_tokens, "0b12")
-        self.assertRaises(SyntaxError, get_tokens, "0b1_2")
-        self.assertRaises(SyntaxError, get_tokens, "0b2")
-        self.assertRaises(SyntaxError, get_tokens, "0b1_")
-        self.assertRaises(SyntaxError, get_tokens, "0b")
-        self.assertRaises(SyntaxError, get_tokens, "0o18")
-        self.assertRaises(SyntaxError, get_tokens, "0o1_8")
-        self.assertRaises(SyntaxError, get_tokens, "0o8")
-        self.assertRaises(SyntaxError, get_tokens, "0o1_")
-        self.assertRaises(SyntaxError, get_tokens, "0o")
-        self.assertRaises(SyntaxError, get_tokens, "0x1_")
-        self.assertRaises(SyntaxError, get_tokens, "0x")
-        self.assertRaises(SyntaxError, get_tokens, "1_")
-        self.assertRaises(SyntaxError, get_tokens, "012")
-        self.assertRaises(SyntaxError, get_tokens, "1.2_")
-        self.assertRaises(SyntaxError, get_tokens, "1e2_")
-        self.assertRaises(SyntaxError, get_tokens, "1e+")
-
-        self.assertRaises(SyntaxError, get_tokens, "'sdfsdf")
-        self.assertRaises(SyntaxError, get_tokens, "'''sdfsdf''")
-
-        self.assertRaises(SyntaxError, get_tokens, "("*1000+"a"+")"*1000)
-        self.assertRaises(SyntaxError, get_tokens, "]")
+            the_string = StringIO(string)
+            return list(tokenize._generate_tokens_from_c_tokenizer(the_string.readline))
+
+        for case in [
+            "(1+2]",
+            "(1+2}",
+            "{1+2]",
+            "1_",
+            "1.2_",
+            "1e2_",
+            "1e+",
+
+            "\xa0",
+            "€",
+            "0b12",
+            "0b1_2",
+            "0b2",
+            "0b1_",
+            "0b",
+            "0o18",
+            "0o1_8",
+            "0o8",
+            "0o1_",
+            "0o",
+            "0x1_",
+            "0x",
+            "1_",
+            "012",
+            "1.2_",
+            "1e2_",
+            "1e+",
+            "'sdfsdf",
+            "'''sdfsdf''",
+            "("*1000+"a"+")"*1000,
+            "]",
+        ]:
+            with self.subTest(case=case):
+                self.assertRaises(tokenize.TokenError, get_tokens, case)
 
     def test_max_indent(self):
         MAXINDENT = 100
@@ -2554,20 +2932,24 @@ def generate_source(indents):
             return source
 
         valid = generate_source(MAXINDENT - 1)
-        tokens = list(_generate_tokens_from_c_tokenizer(valid))
-        self.assertEqual(tokens[-1].type, DEDENT)
+        the_input = StringIO(valid)
+        tokens = list(tokenize._generate_tokens_from_c_tokenizer(the_input.readline))
+        self.assertEqual(tokens[-2].type, tokenize.DEDENT)
+        self.assertEqual(tokens[-1].type, tokenize.ENDMARKER)
         compile(valid, "<string>", "exec")
 
         invalid = generate_source(MAXINDENT)
-        tokens = list(_generate_tokens_from_c_tokenizer(invalid))
-        self.assertEqual(tokens[-1].type, NEWLINE)
+        the_input = StringIO(invalid)
+        self.assertRaises(IndentationError, lambda: list(tokenize._generate_tokens_from_c_tokenizer(the_input.readline)))
         self.assertRaises(
             IndentationError, compile, invalid, "<string>", "exec"
         )
 
     def test_continuation_lines_indentation(self):
         def get_tokens(string):
-            return [(kind, string) for (kind, string, *_) in _generate_tokens_from_c_tokenizer(string)]
+            the_string = StringIO(string)
+            return [(kind, string) for (kind, string, *_)
+                    in tokenize._generate_tokens_from_c_tokenizer(the_string.readline)]
 
         code = dedent("""
             def fib(n):
diff --git a/Lib/test/test_tomllib/test_misc.py b/Lib/test/test_tomllib/test_misc.py
index a477a219fd9ebd..9e677a337a2835 100644
--- a/Lib/test/test_tomllib/test_misc.py
+++ b/Lib/test/test_tomllib/test_misc.py
@@ -9,6 +9,7 @@
 import sys
 import tempfile
 import unittest
+from test import support
 
 from . import tomllib
 
@@ -92,13 +93,23 @@ def test_deepcopy(self):
         self.assertEqual(obj_copy, expected_obj)
 
     def test_inline_array_recursion_limit(self):
-        # 465 with default recursion limit
-        nest_count = int(sys.getrecursionlimit() * 0.465)
-        recursive_array_toml = "arr = " + nest_count * "[" + nest_count * "]"
-        tomllib.loads(recursive_array_toml)
+        with support.infinite_recursion(max_depth=100):
+            available = support.get_recursion_available()
+            nest_count = (available // 2) - 2
+            # Add details if the test fails
+            with self.subTest(limit=sys.getrecursionlimit(),
+                              available=available,
+                              nest_count=nest_count):
+                recursive_array_toml = "arr = " + nest_count * "[" + nest_count * "]"
+                tomllib.loads(recursive_array_toml)
 
     def test_inline_table_recursion_limit(self):
-        # 310 with default recursion limit
-        nest_count = int(sys.getrecursionlimit() * 0.31)
-        recursive_table_toml = nest_count * "key = {" + nest_count * "}"
-        tomllib.loads(recursive_table_toml)
+        with support.infinite_recursion(max_depth=100):
+            available = support.get_recursion_available()
+            nest_count = (available // 3) - 1
+            # Add details if the test fails
+            with self.subTest(limit=sys.getrecursionlimit(),
+                              available=available,
+                              nest_count=nest_count):
+                recursive_table_toml = nest_count * "key = {" + nest_count * "}"
+                tomllib.loads(recursive_table_toml)
diff --git a/Lib/test/test_tools/__init__.py b/Lib/test/test_tools/__init__.py
index 2102b9fceff568..c4395c7c0ad0c9 100644
--- a/Lib/test/test_tools/__init__.py
+++ b/Lib/test/test_tools/__init__.py
@@ -7,12 +7,6 @@
 from test.support import import_helper
 
 
-if support.check_sanitizer(address=True, memory=True):
-    # bpo-46633: Skip the test because it is too slow when Python is built
-    # with ASAN/MSAN: between 5 and 20 minutes on GitHub Actions.
-    raise unittest.SkipTest("test too slow on ASAN/MSAN build")
-
-
 if not support.has_subprocess_support:
     raise unittest.SkipTest("test module requires subprocess")
 
diff --git a/Lib/test/test_tools/test_freeze.py b/Lib/test/test_tools/test_freeze.py
index 2ba36ca208f967..671ec2961e7f8f 100644
--- a/Lib/test/test_tools/test_freeze.py
+++ b/Lib/test/test_tools/test_freeze.py
@@ -15,8 +15,13 @@
 @support.requires_zlib()
 @unittest.skipIf(sys.platform.startswith('win'), 'not supported on Windows')
 @support.skip_if_buildbot('not all buildbots have enough space')
+# gh-103053: Skip test if Python is built with Profile Guided Optimization
+# (PGO), since the test is just too slow in this case.
+@unittest.skipIf(support.check_cflags_pgo(),
+                 'test is too slow with PGO')
 class TestFreeze(unittest.TestCase):
 
+    @support.requires_resource('cpu') # Building Python is slow
     def test_freeze_simple_script(self):
         script = textwrap.dedent("""
             import sys
diff --git a/Lib/test/test_tools/test_makeunicodedata.py b/Lib/test/test_tools/test_makeunicodedata.py
new file mode 100644
index 00000000000000..f31375117e2e92
--- /dev/null
+++ b/Lib/test/test_tools/test_makeunicodedata.py
@@ -0,0 +1,122 @@
+import unittest
+from test.test_tools import skip_if_missing, imports_under_tool
+from test import support
+from test.support.hypothesis_helper import hypothesis
+
+st = hypothesis.strategies
+given = hypothesis.given
+example = hypothesis.example
+
+
+skip_if_missing("unicode")
+with imports_under_tool("unicode"):
+    from dawg import Dawg, build_compression_dawg, lookup, inverse_lookup
+
+
+@st.composite
+def char_name_db(draw, min_length=1, max_length=30):
+    m = draw(st.integers(min_value=min_length, max_value=max_length))
+    names = draw(
+        st.sets(st.text("abcd", min_size=1, max_size=10), min_size=m, max_size=m)
+    )
+    characters = draw(st.sets(st.characters(), min_size=m, max_size=m))
+    return list(zip(names, characters))
+
+
+class TestDawg(unittest.TestCase):
+    """Tests for the directed acyclic word graph data structure that is used
+    to store the unicode character names in unicodedata. Tests ported from PyPy
+    """
+
+    def test_dawg_direct_simple(self):
+        dawg = Dawg()
+        dawg.insert("a", -4)
+        dawg.insert("c", -2)
+        dawg.insert("cat", -1)
+        dawg.insert("catarr", 0)
+        dawg.insert("catnip", 1)
+        dawg.insert("zcatnip", 5)
+        packed, data, inverse = dawg.finish()
+
+        self.assertEqual(lookup(packed, data, b"a"), -4)
+        self.assertEqual(lookup(packed, data, b"c"), -2)
+        self.assertEqual(lookup(packed, data, b"cat"), -1)
+        self.assertEqual(lookup(packed, data, b"catarr"), 0)
+        self.assertEqual(lookup(packed, data, b"catnip"), 1)
+        self.assertEqual(lookup(packed, data, b"zcatnip"), 5)
+        self.assertRaises(KeyError, lookup, packed, data, b"b")
+        self.assertRaises(KeyError, lookup, packed, data, b"catni")
+        self.assertRaises(KeyError, lookup, packed, data, b"catnipp")
+
+        self.assertEqual(inverse_lookup(packed, inverse, -4), b"a")
+        self.assertEqual(inverse_lookup(packed, inverse, -2), b"c")
+        self.assertEqual(inverse_lookup(packed, inverse, -1), b"cat")
+        self.assertEqual(inverse_lookup(packed, inverse, 0), b"catarr")
+        self.assertEqual(inverse_lookup(packed, inverse, 1), b"catnip")
+        self.assertEqual(inverse_lookup(packed, inverse, 5), b"zcatnip")
+        self.assertRaises(KeyError, inverse_lookup, packed, inverse, 12)
+
+    def test_forbid_empty_dawg(self):
+        dawg = Dawg()
+        self.assertRaises(ValueError, dawg.finish)
+
+    @given(char_name_db())
+    @example([("abc", "a"), ("abd", "b")])
+    @example(
+        [
+            ("bab", "1"),
+            ("a", ":"),
+            ("ad", "@"),
+            ("b", "<"),
+            ("aacc", "?"),
+            ("dab", "D"),
+            ("aa", "0"),
+            ("ab", "F"),
+            ("aaa", "7"),
+            ("cbd", "="),
+            ("abad", ";"),
+            ("ac", "B"),
+            ("abb", "4"),
+            ("bb", "2"),
+            ("aab", "9"),
+            ("caaaaba", "E"),
+            ("ca", ">"),
+            ("bbaaa", "5"),
+            ("d", "3"),
+            ("baac", "8"),
+            ("c", "6"),
+            ("ba", "A"),
+        ]
+    )
+    @example(
+        [
+            ("bcdac", "9"),
+            ("acc", "g"),
+            ("d", "d"),
+            ("daabdda", "0"),
+            ("aba", ";"),
+            ("c", "6"),
+            ("aa", "7"),
+            ("abbd", "c"),
+            ("badbd", "?"),
+            ("bbd", "f"),
+            ("cc", "@"),
+            ("bb", "8"),
+            ("daca", ">"),
+            ("ba", ":"),
+            ("baac", "3"),
+            ("dbdddac", "a"),
+            ("a", "2"),
+            ("cabd", "b"),
+            ("b", "="),
+            ("abd", "4"),
+            ("adcbd", "5"),
+            ("abc", "e"),
+            ("ab", "1"),
+        ]
+    )
+    def test_dawg(self, data):
+        # suppress debug prints
+        with support.captured_stdout() as output:
+            # it's enough to build it, building will also check the result
+            build_compression_dawg(data)
diff --git a/Lib/test/test_tools/test_reindent.py b/Lib/test/test_tools/test_reindent.py
index 3b0c793a38e4da..64e31c2b7703c0 100644
--- a/Lib/test/test_tools/test_reindent.py
+++ b/Lib/test/test_tools/test_reindent.py
@@ -25,7 +25,7 @@ def test_help(self):
         self.assertGreater(err, b'')
 
     def test_reindent_file_with_bad_encoding(self):
-        bad_coding_path = findfile('bad_coding.py')
+        bad_coding_path = findfile('bad_coding.py', subdir='tokenizedata')
         rc, out, err = assert_python_ok(self.script, '-r', bad_coding_path)
         self.assertEqual(out, b'')
         self.assertNotEqual(err, b'')
diff --git a/Lib/test/test_tools/test_sundry.py b/Lib/test/test_tools/test_sundry.py
index 3177fafb84a65b..d0b702d392cdf6 100644
--- a/Lib/test/test_tools/test_sundry.py
+++ b/Lib/test/test_tools/test_sundry.py
@@ -14,30 +14,16 @@
 skip_if_missing()
 
 class TestSundryScripts(unittest.TestCase):
-    # At least make sure the rest don't have syntax errors.  When tests are
-    # added for a script it should be added to the allowlist below.
-
-    skiplist = ['2to3']
-
     # import logging registers "atfork" functions which keep indirectly the
     # logging module dictionary alive. Mock the function to be able to unload
     # cleanly the logging module.
     @import_helper.mock_register_at_fork
     def test_sundry(self, mock_os):
-        old_modules = import_helper.modules_setup()
-        try:
-            for fn in os.listdir(scriptsdir):
-                if not fn.endswith('.py'):
-                    continue
-
-                name = fn[:-3]
-                if name in self.skiplist:
-                    continue
-
-                import_tool(name)
-        finally:
-            # Unload all modules loaded in this test
-            import_helper.modules_cleanup(*old_modules)
+        for fn in os.listdir(scriptsdir):
+            if not fn.endswith('.py'):
+                continue
+            name = fn[:-3]
+            import_tool(name)
 
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_trace.py b/Lib/test/test_trace.py
index 73339ebdb7c4e9..c1e289bcaff9e5 100644
--- a/Lib/test/test_trace.py
+++ b/Lib/test/test_trace.py
@@ -1,7 +1,7 @@
 import os
 from pickle import dump
 import sys
-from test.support import captured_stdout
+from test.support import captured_stdout, requires_resource
 from test.support.os_helper import (TESTFN, rmtree, unlink)
 from test.support.script_helper import assert_python_ok, assert_python_failure
 import textwrap
@@ -360,13 +360,19 @@ def tearDown(self):
         rmtree(TESTFN)
         unlink(TESTFN)
 
-    def _coverage(self, tracer,
-                  cmd='import test.support, test.test_pprint;'
-                      'test.support.run_unittest(test.test_pprint.QueryTestCase)'):
+    DEFAULT_SCRIPT = '''if True:
+        import unittest
+        from test.test_pprint import QueryTestCase
+        loader = unittest.TestLoader()
+        tests = loader.loadTestsFromTestCase(QueryTestCase)
+        tests(unittest.TestResult())
+        '''
+    def _coverage(self, tracer, cmd=DEFAULT_SCRIPT):
         tracer.run(cmd)
         r = tracer.results()
         r.write_results(show_missing=True, summary=True, coverdir=TESTFN)
 
+    @requires_resource('cpu')
     def test_coverage(self):
         tracer = trace.Trace(trace=0, count=1)
         with captured_stdout() as stdout:
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index 19a2be88d2c1bc..a6708119b81191 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -8,6 +8,7 @@
 import inspect
 import builtins
 import unittest
+import unittest.mock
 import re
 import tempfile
 import random
@@ -24,6 +25,7 @@
 import json
 import textwrap
 import traceback
+import contextlib
 from functools import partial
 from pathlib import Path
 
@@ -41,6 +43,14 @@
 class TracebackCases(unittest.TestCase):
     # For now, a very minimal set of tests.  I want to be sure that
     # formatting of SyntaxErrors works based on changes for 2.1.
+    def setUp(self):
+        super().setUp()
+        self.colorize = traceback._COLORIZE
+        traceback._COLORIZE = False
+
+    def tearDown(self):
+        super().tearDown()
+        traceback._COLORIZE = self.colorize
 
     def get_exception_format(self, func, exc):
         try:
@@ -215,6 +225,155 @@ def __str__(self):
             str_name = '.'.join([X.__module__, X.__qualname__])
         self.assertEqual(err[0], "%s: %s\n" % (str_name, str_value))
 
+    def test_format_exception_group_without_show_group(self):
+        eg = ExceptionGroup('A', [ValueError('B')])
+        err = traceback.format_exception_only(eg)
+        self.assertEqual(err, ['ExceptionGroup: A (1 sub-exception)\n'])
+
+    def test_format_exception_group(self):
+        eg = ExceptionGroup('A', [ValueError('B')])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (1 sub-exception)\n',
+            '   ValueError: B\n',
+        ])
+
+    def test_format_base_exception_group(self):
+        eg = BaseExceptionGroup('A', [BaseException('B')])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'BaseExceptionGroup: A (1 sub-exception)\n',
+            '   BaseException: B\n',
+        ])
+
+    def test_format_exception_group_with_note(self):
+        exc = ValueError('B')
+        exc.add_note('Note')
+        eg = ExceptionGroup('A', [exc])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (1 sub-exception)\n',
+            '   ValueError: B\n',
+            '   Note\n',
+        ])
+
+    def test_format_exception_group_explicit_class(self):
+        eg = ExceptionGroup('A', [ValueError('B')])
+        err = traceback.format_exception_only(ExceptionGroup, eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (1 sub-exception)\n',
+            '   ValueError: B\n',
+        ])
+
+    def test_format_exception_group_multiple_exceptions(self):
+        eg = ExceptionGroup('A', [ValueError('B'), TypeError('C')])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (2 sub-exceptions)\n',
+            '   ValueError: B\n',
+            '   TypeError: C\n',
+        ])
+
+    def test_format_exception_group_multiline_messages(self):
+        eg = ExceptionGroup('A\n1', [ValueError('B\n2')])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A\n1 (1 sub-exception)\n',
+            '   ValueError: B\n',
+            '   2\n',
+        ])
+
+    def test_format_exception_group_multiline2_messages(self):
+        exc = ValueError('B\n\n2\n')
+        exc.add_note('\nC\n\n3')
+        eg = ExceptionGroup('A\n\n1\n', [exc, IndexError('D')])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A\n\n1\n (2 sub-exceptions)\n',
+            '   ValueError: B\n',
+            '   \n',
+            '   2\n',
+            '   \n',
+            '   \n',  # first char of `note`
+            '   C\n',
+            '   \n',
+            '   3\n', # note ends
+            '   IndexError: D\n',
+        ])
+
+    def test_format_exception_group_syntax_error(self):
+        exc = SyntaxError("error", ("x.py", 23, None, "bad syntax"))
+        eg = ExceptionGroup('A\n1', [exc])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A\n1 (1 sub-exception)\n',
+            '     File "x.py", line 23\n',
+            '       bad syntax\n',
+            '   SyntaxError: error\n',
+        ])
+
+    def test_format_exception_group_nested_with_notes(self):
+        exc = IndexError('D')
+        exc.add_note('Note\nmultiline')
+        eg = ExceptionGroup('A', [
+            ValueError('B'),
+            ExceptionGroup('C', [exc, LookupError('E')]),
+            TypeError('F'),
+        ])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (3 sub-exceptions)\n',
+            '   ValueError: B\n',
+            '   ExceptionGroup: C (2 sub-exceptions)\n',
+            '      IndexError: D\n',
+            '      Note\n',
+            '      multiline\n',
+            '      LookupError: E\n',
+            '   TypeError: F\n',
+        ])
+
+    def test_format_exception_group_with_tracebacks(self):
+        def f():
+            try:
+                1 / 0
+            except ZeroDivisionError as e:
+                return e
+
+        def g():
+            try:
+                raise TypeError('g')
+            except TypeError as e:
+                return e
+
+        eg = ExceptionGroup('A', [
+            f(),
+            ExceptionGroup('B', [g()]),
+        ])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (2 sub-exceptions)\n',
+            '   ZeroDivisionError: division by zero\n',
+            '   ExceptionGroup: B (1 sub-exception)\n',
+            '      TypeError: g\n',
+        ])
+
+    def test_format_exception_group_with_cause(self):
+        def f():
+            try:
+                try:
+                    1 / 0
+                except ZeroDivisionError:
+                    raise ValueError(0)
+            except Exception as e:
+                return e
+
+        eg = ExceptionGroup('A', [f()])
+        err = traceback.format_exception_only(eg, show_group=True)
+        self.assertEqual(err, [
+            'ExceptionGroup: A (1 sub-exception)\n',
+            '   ValueError: 0\n',
+        ])
+
     @requires_subprocess()
     def test_encoded_file(self):
         # Test that tracebacks are correctly printed for encoded source files:
@@ -313,6 +472,8 @@ def __del__(self):
         rc, stdout, stderr = assert_python_ok('-c', code)
         expected = [b'Traceback (most recent call last):',
                     b'  File "<string>", line 8, in __init__',
+                    b'    x = 1 / 0',
+                    b'        ^^^^^',
                     b'ZeroDivisionError: division by zero']
         self.assertEqual(stderr.splitlines(), expected)
 
@@ -370,7 +531,7 @@ def test_signatures(self):
         self.assertEqual(
             str(inspect.signature(traceback.print_exception)),
             ('(exc, /, value=<implicit>, tb=<implicit>, '
-             'limit=None, file=None, chain=True)'))
+             'limit=None, file=None, chain=True, **kwargs)'))
 
         self.assertEqual(
             str(inspect.signature(traceback.format_exception)),
@@ -379,7 +540,7 @@ def test_signatures(self):
 
         self.assertEqual(
             str(inspect.signature(traceback.format_exception_only)),
-            '(exc, /, value=<implicit>)')
+            '(exc, /, value=<implicit>, *, show_group=False)')
 
 
 class PurePythonExceptionFormattingMixin:
@@ -427,6 +588,7 @@ def f():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f\n'
             '    if True: raise ValueError("basic caret tests")\n'
             '             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
@@ -445,6 +607,7 @@ def f_with_unicode():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f_with_unicode\n'
             '    if True: raise ValueError("Ĥellö Wörld")\n'
             '             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
@@ -462,6 +625,7 @@ def foo(a: THIS_DOES_NOT_EXIST ) -> int:
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f_with_type\n'
             '    def foo(a: THIS_DOES_NOT_EXIST ) -> int:\n'
             '               ^^^^^^^^^^^^^^^^^^^\n'
@@ -482,9 +646,14 @@ def f_with_multiline():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f_with_multiline\n'
             '    if True: raise ValueError(\n'
-            '             ^^^^^^^^^^^^^^^^^'
+            '             ^^^^^^^^^^^^^^^^^\n'
+            '        "error over multiple lines"\n'
+            '        ^^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
+            '    )\n'
+            '    ^'
         )
         result_lines = self.get_exception(f_with_multiline)
         self.assertEqual(result_lines, expected_f.splitlines())
@@ -513,9 +682,10 @@ def f_with_multiline():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_multiline\n'
             '    return compile(code, "?", "exec")\n'
-            '           ^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
+            '           ~~~~~~~^^^^^^^^^^^^^^^^^^^\n'
             '  File "?", line 7\n'
             '    foo(a, z\n'
             '           ^'
@@ -538,9 +708,12 @@ def f_with_multiline():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_multiline\n'
             '    2 + 1 /\n'
-            '        ^^^'
+            '        ~~^\n'
+            '    0\n'
+            '    ~'
         )
         result_lines = self.get_exception(f_with_multiline)
         self.assertEqual(result_lines, expected_f.splitlines())
@@ -555,6 +728,7 @@ def f_with_binary_operator():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_binary_operator\n'
             '    return 10 + divisor / 0 + 30\n'
             '                ~~~~~~~~^~~\n'
@@ -572,6 +746,7 @@ def f_with_binary_operator():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_binary_operator\n'
             '    return 10 + áóí / 0 + 30\n'
             '                ~~~~^~~\n'
@@ -589,6 +764,7 @@ def f_with_binary_operator():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_binary_operator\n'
             '    return 10 + divisor // 0 + 30\n'
             '                ~~~~~~~~^^~~\n'
@@ -596,6 +772,110 @@ def f_with_binary_operator():
         result_lines = self.get_exception(f_with_binary_operator)
         self.assertEqual(result_lines, expected_error.splitlines())
 
+    def test_caret_for_binary_operators_with_spaces_and_parenthesis(self):
+        def f_with_binary_operator():
+            a = 1
+            b = ""
+            return ( a   )   +b
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f_with_binary_operator\n'
+            '    return ( a   )   +b\n'
+            '           ~~~~~~~~~~^~\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_binary_operators_multiline(self):
+        def f_with_binary_operator():
+            b = 1
+            c = ""
+            a = b    \
+         +\
+               c  # test
+            return a
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f_with_binary_operator\n'
+            '       a = b    \\\n'
+            '           ~~~~~~\n'
+            '    +\\\n'
+            '    ^~\n'
+            '          c  # test\n'
+            '          ~\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_binary_operators_multiline_two_char(self):
+        def f_with_binary_operator():
+            b = 1
+            c = ""
+            a = (
+                (b  # test +
+                    )  \
+                # +
+            << (c  # test
+                \
+            )  # test
+            )
+            return a
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+4}, in f_with_binary_operator\n'
+            '        (b  # test +\n'
+            '        ~~~~~~~~~~~~\n'
+            '            )  \\\n'
+            '            ~~~~\n'
+            '        # +\n'
+            '        ~~~\n'
+            '    << (c  # test\n'
+            '    ^^~~~~~~~~~~~\n'
+            '        \\\n'
+            '        ~\n'
+            '    )  # test\n'
+            '    ~\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_binary_operators_multiline_with_unicode(self):
+        def f_with_binary_operator():
+            b = 1
+            a = ("ááá" +
+                "áá") + b
+            return a
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+2}, in f_with_binary_operator\n'
+            '    a = ("ááá" +\n'
+            '        ~~~~~~~~\n'
+            '        "áá") + b\n'
+            '        ~~~~~~^~~\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
     def test_caret_for_subscript(self):
         def f_with_subscript():
             some_dict = {'x': {'y': None}}
@@ -606,6 +886,7 @@ def f_with_subscript():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_subscript\n'
             "    return some_dict['x']['y']['z']\n"
             '           ~~~~~~~~~~~~~~~~~~~^^^^^\n'
@@ -623,6 +904,7 @@ def f_with_subscript():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_subscript\n'
             "    return some_dict['ó']['á']['í']['beta']\n"
             '           ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^\n'
@@ -630,6 +912,245 @@ def f_with_subscript():
         result_lines = self.get_exception(f_with_subscript)
         self.assertEqual(result_lines, expected_error.splitlines())
 
+    def test_caret_for_subscript_with_spaces_and_parenthesis(self):
+        def f_with_binary_operator():
+            a = []
+            b = c = 1
+            return b     [    a  ] + c
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f_with_binary_operator\n'
+            '    return b     [    a  ] + c\n'
+            '           ~~~~~~^^^^^^^^^\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_subscript_multiline(self):
+        def f_with_subscript():
+            bbbbb = {}
+            ccc = 1
+            ddd = 2
+            b = bbbbb \
+                [  ccc # test
+
+                 + ddd  \
+
+                ] # test
+            return b
+
+        lineno_f = f_with_subscript.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+4}, in f_with_subscript\n'
+            '    b = bbbbb \\\n'
+            '        ~~~~~~~\n'
+            '        [  ccc # test\n'
+            '        ^^^^^^^^^^^^^\n'
+            '    \n'
+            '    \n'
+            '         + ddd  \\\n'
+            '         ^^^^^^^^\n'
+            '    \n'
+            '    \n'
+            '        ] # test\n'
+            '        ^\n'
+        )
+        result_lines = self.get_exception(f_with_subscript)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_call(self):
+        def f_with_call():
+            def f1(a):
+                def f2(b):
+                    raise RuntimeError("fail")
+                return f2
+            return f1("x")("y")
+
+        lineno_f = f_with_call.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+5}, in f_with_call\n'
+            '    return f1("x")("y")\n'
+            '           ~~~~~~~^^^^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f2\n'
+            '    raise RuntimeError("fail")\n'
+        )
+        result_lines = self.get_exception(f_with_call)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_call_unicode(self):
+        def f_with_call():
+            def f1(a):
+                def f2(b):
+                    raise RuntimeError("fail")
+                return f2
+            return f1("ó")("á")
+
+        lineno_f = f_with_call.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+5}, in f_with_call\n'
+            '    return f1("ó")("á")\n'
+            '           ~~~~~~~^^^^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f2\n'
+            '    raise RuntimeError("fail")\n'
+        )
+        result_lines = self.get_exception(f_with_call)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_call_with_spaces_and_parenthesis(self):
+        def f_with_binary_operator():
+            def f(a):
+                raise RuntimeError("fail")
+            return f     (    "x"  ) + 2
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f_with_binary_operator\n'
+            '    return f     (    "x"  ) + 2\n'
+            '           ~~~~~~^^^^^^^^^^^\n'
+            f'  File "{__file__}", line {lineno_f+2}, in f\n'
+            '    raise RuntimeError("fail")\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_caret_for_call_multiline(self):
+        def f_with_call():
+            class C:
+                def y(self, a):
+                    def f(b):
+                        raise RuntimeError("fail")
+                    return f
+            def g(x):
+                return C()
+            a = (g(1).y)(
+                2
+            )(3)(4)
+            return a
+
+        lineno_f = f_with_call.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+8}, in f_with_call\n'
+            '    a = (g(1).y)(\n'
+            '        ~~~~~~~~~\n'
+            '        2\n'
+            '        ~\n'
+            '    )(3)(4)\n'
+            '    ~^^^\n'
+            f'  File "{__file__}", line {lineno_f+4}, in f\n'
+            '    raise RuntimeError("fail")\n'
+        )
+        result_lines = self.get_exception(f_with_call)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_many_lines(self):
+        def f():
+            x = 1
+            if True: x += (
+                "a" +
+                "a"
+            )  # test
+
+        lineno_f = f.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+2}, in f\n'
+            '    if True: x += (\n'
+            '             ^^^^^^\n'
+            '    ...<2 lines>...\n'
+            '    )  # test\n'
+            '    ^\n'
+        )
+        result_lines = self.get_exception(f)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_many_lines_no_caret(self):
+        def f():
+            x = 1
+            x += (
+                "a" +
+                "a"
+            )
+
+        lineno_f = f.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+2}, in f\n'
+            '    x += (\n'
+            '    ...<2 lines>...\n'
+            '    )\n'
+        )
+        result_lines = self.get_exception(f)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
+    def test_many_lines_binary_op(self):
+        def f_with_binary_operator():
+            b = 1
+            c = "a"
+            a = (
+                b +
+                b
+            ) + (
+                c +
+                c +
+                c
+            )
+            return a
+
+        lineno_f = f_with_binary_operator.__code__.co_firstlineno
+        expected_error = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+3}, in f_with_binary_operator\n'
+            '    a = (\n'
+            '        ~\n'
+            '        b +\n'
+            '        ~~~\n'
+            '        b\n'
+            '        ~\n'
+            '    ) + (\n'
+            '    ~~^~~\n'
+            '        c +\n'
+            '        ~~~\n'
+            '    ...<2 lines>...\n'
+            '    )\n'
+            '    ~\n'
+        )
+        result_lines = self.get_exception(f_with_binary_operator)
+        self.assertEqual(result_lines, expected_error.splitlines())
+
     def test_traceback_specialization_with_syntax_error(self):
         bytecode = compile("1 / 0 / 1 / 2\n", TESTFN, "exec")
 
@@ -646,6 +1167,7 @@ def test_traceback_specialization_with_syntax_error(self):
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{TESTFN}", line {lineno_f}, in <module>\n'
             "    1 $ 0 / 1 / 2\n"
             '    ^^^^^\n'
@@ -668,6 +1190,7 @@ def test_traceback_very_long_line(self):
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{TESTFN}", line {lineno_f}, in <module>\n'
             f'    {source}\n'
             f'    {" "*len("if True: ") + "^"*256}\n'
@@ -685,6 +1208,7 @@ def f_with_subscript():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_f+2}, in f_with_subscript\n'
             "    some_dict['x']['y']['z']\n"
             '    ~~~~~~~~~~~~~~~~~~~^^^^^\n'
@@ -704,6 +1228,7 @@ def exc():
              f'  + Exception Group Traceback (most recent call last):\n'
              f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
              f'  |     callable()\n'
+             f'  |     ~~~~~~~~^^\n'
              f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 1}, in exc\n'
              f'  |     if True: raise ExceptionGroup("eg", [ValueError(1), TypeError(2)])\n'
              f'  |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
@@ -769,6 +1294,7 @@ def g(): pass
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_applydescs + 1}, in applydecs\n'
             '    @dec_error\n'
             '     ^^^^^^^^^\n'
@@ -787,6 +1313,7 @@ class A: pass
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
             '    callable()\n'
+            '    ~~~~~~~~^^\n'
             f'  File "{__file__}", line {lineno_applydescs_class + 1}, in applydecs_class\n'
             '    @dec_error\n'
             '     ^^^^^^^^^\n'
@@ -805,6 +1332,7 @@ def f():
             "Traceback (most recent call last):",
             f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
             "    callable()",
+            "    ~~~~~~~~^^",
             f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 2}, in f",
             "    .method",
             "     ^^^^^^",
@@ -821,6 +1349,7 @@ def f():
             "Traceback (most recent call last):",
             f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
             "    callable()",
+            "    ~~~~~~~~^^",
             f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 2}, in f",
             "    method",
         ]
@@ -836,6 +1365,7 @@ def f():
             "Traceback (most recent call last):",
             f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
             "    callable()",
+            "    ~~~~~~~~^^",
             f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 2}, in f",
             "    . method",
             "      ^^^^^^",
@@ -851,6 +1381,7 @@ def f():
             "Traceback (most recent call last):",
             f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
             "    callable()",
+            "    ~~~~~~~~^^",
             f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 1}, in f",
             "    ｗｉｄｔｈ",
         ]
@@ -867,6 +1398,7 @@ def f():
             "Traceback (most recent call last):",
             f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
             "    callable()",
+            "    ~~~~~~~~^^",
             f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 2}, in f",
             "    raise ValueError(ｗｉｄｔｈ)",
         ]
@@ -885,12 +1417,85 @@ def f():
             "Traceback (most recent call last):",
             f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
             "    callable()",
+            "    ~~~~~~~~^^",
             f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 4}, in f",
-            "    print(1, ï½—ï½—ï½—(",
-            "             ^^^^",
+            f"    print(1, ï½—ï½—ï½—(",
+            f"             ~~~~~~^",
+            f"            ｔｈ))",
+            f"            ^^^^^",
         ]
         self.assertEqual(actual, expected)
 
+    def test_byte_offset_with_wide_characters_term_highlight(self):
+        def f():
+            说明说明 = 1
+            şçöğıĤellö = 0 # not wide but still non-ascii
+            return 说明说明 / şçöğıĤellö
+
+        actual = self.get_exception(f)
+        expected = [
+            f"Traceback (most recent call last):",
+            f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
+            f"    callable()",
+            f"    ~~~~~~~~^^",
+            f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 3}, in f",
+            f"    return 说明说明 / şçöğıĤellö",
+            f"           ~~~~~~~~~^~~~~~~~~~~~",
+        ]
+        self.assertEqual(actual, expected)
+
+    def test_byte_offset_with_emojis_term_highlight(self):
+        def f():
+            return "✨�" + func_说明说明("📗🚛",
+                "📗🚛") + "�"
+
+        actual = self.get_exception(f)
+        expected = [
+            f"Traceback (most recent call last):",
+            f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
+            f"    callable()",
+            f"    ~~~~~~~~^^",
+            f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 1}, in f",
+            f'    return "✨�" + func_说明说明("📗🚛",',
+            f"                    ^^^^^^^^^^^^^",
+        ]
+        self.assertEqual(actual, expected)
+
+    def test_byte_offset_wide_chars_subscript(self):
+        def f():
+            my_dct = {
+                "✨🚛✨": {
+                    "说明": {
+                        "���": None
+                    }
+                }
+            }
+            return my_dct["✨🚛✨"]["说明"]["�"]["说明"]["��"]
+
+        actual = self.get_exception(f)
+        expected = [
+            f"Traceback (most recent call last):",
+            f"  File \"{__file__}\", line {self.callable_line}, in get_exception",
+            f"    callable()",
+            f"    ~~~~~~~~^^",
+            f"  File \"{__file__}\", line {f.__code__.co_firstlineno + 8}, in f",
+            f'    return my_dct["✨🚛✨"]["说明"]["�"]["说明"]["��"]',
+            f"           ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^",
+        ]
+        self.assertEqual(actual, expected)
+
+    def test_memory_error(self):
+        def f():
+            raise MemoryError()
+
+        actual = self.get_exception(f)
+        expected = ['Traceback (most recent call last):',
+            f'  File "{__file__}", line {self.callable_line}, in get_exception',
+            '    callable()',
+            '    ~~~~~~~~^^',
+            f'  File "{__file__}", line {f.__code__.co_firstlineno + 1}, in f',
+            '    raise MemoryError()']
+        self.assertEqual(actual, expected)
 
 
 @requires_debug_ranges()
@@ -918,7 +1523,7 @@ class CPythonTracebackErrorCaretTests(
 
 @cpython_only
 @requires_debug_ranges()
-class CPythonTracebackErrorCaretTests(
+class CPythonTracebackLegacyErrorCaretTests(
     CAPIExceptionFormattingLegacyMixin,
     TracebackErrorLocationCaretTestBase,
     unittest.TestCase,
@@ -927,11 +1532,21 @@ class CPythonTracebackErrorCaretTests(
     Same set of tests as above but with Python's legacy internal traceback printing.
     """
 
-class TracebackFormatTests(unittest.TestCase):
+
+class TracebackFormatMixin:
+    DEBUG_RANGES = True
 
     def some_exception(self):
         raise KeyError('blah')
 
+    def _filter_debug_ranges(self, expected):
+        return [line for line in expected if not set(line.strip()) <= set("^~")]
+
+    def _maybe_filter_debug_ranges(self, expected):
+        if not self.DEBUG_RANGES:
+            return self._filter_debug_ranges(expected)
+        return expected
+
     @cpython_only
     def check_traceback_format(self, cleanup_func=None):
         from _testcapi import traceback_print
@@ -944,6 +1559,11 @@ def check_traceback_format(self, cleanup_func=None):
                 cleanup_func(tb.tb_next)
             traceback_fmt = 'Traceback (most recent call last):\n' + \
                             ''.join(traceback.format_tb(tb))
+            # clear caret lines from traceback_fmt since internal API does
+            # not emit them
+            traceback_fmt = "\n".join(
+                self._filter_debug_ranges(traceback_fmt.splitlines())
+            ) + "\n"
             file_ = StringIO()
             traceback_print(tb, file_)
             python_fmt  = file_.getvalue()
@@ -1036,12 +1656,16 @@ def f():
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {lineno_f+5}, in _check_recursive_traceback_display\n'
             '    f()\n'
+            '    ~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f\n'
             '    f()\n'
+            '    ~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f\n'
             '    f()\n'
+            '    ~^^\n'
             f'  File "{__file__}", line {lineno_f+1}, in f\n'
             '    f()\n'
+            '    ~^^\n'
             # XXX: The following line changes depending on whether the tests
             # are run through the interactive interpreter or with -m
             # It also varies depending on the platform (stack size)
@@ -1050,7 +1674,7 @@ def f():
             'RecursionError: maximum recursion depth exceeded\n'
         )
 
-        expected = result_f.splitlines()
+        expected = self._maybe_filter_debug_ranges(result_f.splitlines())
         actual = stderr_f.getvalue().splitlines()
 
         # Check the output text matches expectations
@@ -1082,13 +1706,13 @@ def g(count=10):
         result_g = (
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             '  [Previous line repeated 7 more times]\n'
             f'  File "{__file__}", line {lineno_g+3}, in g\n'
             '    raise ValueError\n'
@@ -1098,8 +1722,9 @@ def g(count=10):
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {lineno_g+7}, in _check_recursive_traceback_display\n'
             '    g()\n'
+            '    ~^^\n'
         )
-        expected = (tb_line + result_g).splitlines()
+        expected = self._maybe_filter_debug_ranges((tb_line + result_g).splitlines())
         actual = stderr_g.getvalue().splitlines()
         self.assertEqual(actual, expected)
 
@@ -1122,20 +1747,22 @@ def h(count=10):
             'Traceback (most recent call last):\n'
             f'  File "{__file__}", line {lineno_h+7}, in _check_recursive_traceback_display\n'
             '    h()\n'
+            '    ~^^\n'
             f'  File "{__file__}", line {lineno_h+2}, in h\n'
             '    return h(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_h+2}, in h\n'
             '    return h(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_h+2}, in h\n'
             '    return h(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             '  [Previous line repeated 7 more times]\n'
             f'  File "{__file__}", line {lineno_h+3}, in h\n'
             '    g()\n'
+            '    ~^^\n'
         )
-        expected = (result_h + result_g).splitlines()
+        expected = self._maybe_filter_debug_ranges((result_h + result_g).splitlines())
         actual = stderr_h.getvalue().splitlines()
         self.assertEqual(actual, expected)
 
@@ -1150,23 +1777,24 @@ def h(count=10):
         result_g = (
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+3}, in g\n'
             '    raise ValueError\n'
             'ValueError\n'
         )
         tb_line = (
             'Traceback (most recent call last):\n'
-            f'  File "{__file__}", line {lineno_g+77}, in _check_recursive_traceback_display\n'
+            f'  File "{__file__}", line {lineno_g+80}, in _check_recursive_traceback_display\n'
             '    g(traceback._RECURSIVE_CUTOFF)\n'
+            '    ~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
         )
-        expected = (tb_line + result_g).splitlines()
+        expected = self._maybe_filter_debug_ranges((tb_line + result_g).splitlines())
         actual = stderr_g.getvalue().splitlines()
         self.assertEqual(actual, expected)
 
@@ -1181,13 +1809,13 @@ def h(count=10):
         result_g = (
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             f'  File "{__file__}", line {lineno_g+2}, in g\n'
             '    return g(count-1)\n'
-            '           ^^^^^^^^^^\n'
+            '           ~^^^^^^^^^\n'
             '  [Previous line repeated 1 more time]\n'
             f'  File "{__file__}", line {lineno_g+3}, in g\n'
             '    raise ValueError\n'
@@ -1195,24 +1823,23 @@ def h(count=10):
         )
         tb_line = (
             'Traceback (most recent call last):\n'
-            f'  File "{__file__}", line {lineno_g+108}, in _check_recursive_traceback_display\n'
+            f'  File "{__file__}", line {lineno_g+112}, in _check_recursive_traceback_display\n'
             '    g(traceback._RECURSIVE_CUTOFF + 1)\n'
+            '    ~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n'
         )
-        expected = (tb_line + result_g).splitlines()
+        expected = self._maybe_filter_debug_ranges((tb_line + result_g).splitlines())
         actual = stderr_g.getvalue().splitlines()
         self.assertEqual(actual, expected)
 
     @requires_debug_ranges()
-    def test_recursive_traceback_python(self):
-        self._check_recursive_traceback_display(traceback.print_exc)
-
-    @cpython_only
-    @requires_debug_ranges()
-    def test_recursive_traceback_cpython_internal(self):
-        from _testcapi import exception_print
-        def render_exc():
-            exception_print(sys.exception())
-        self._check_recursive_traceback_display(render_exc)
+    def test_recursive_traceback(self):
+        if self.DEBUG_RANGES:
+            self._check_recursive_traceback_display(traceback.print_exc)
+        else:
+            from _testcapi import exception_print
+            def render_exc():
+                exception_print(sys.exception())
+            self._check_recursive_traceback_display(render_exc)
 
     def test_format_stack(self):
         def fmt():
@@ -1285,7 +1912,8 @@ def test_exception_group_deep_recursion_traceback(self):
     def test_print_exception_bad_type_capi(self):
         from _testcapi import exception_print
         with captured_output("stderr") as stderr:
-            exception_print(42)
+            with support.catch_unraisable_exception():
+                exception_print(42)
         self.assertEqual(
             stderr.getvalue(),
             ('TypeError: print_exception(): '
@@ -1309,6 +1937,24 @@ def test_print_exception_bad_type_python(self):
 boundaries = re.compile(
     '(%s|%s)' % (re.escape(cause_message), re.escape(context_message)))
 
+class TestTracebackFormat(unittest.TestCase, TracebackFormatMixin):
+    pass
+
+@cpython_only
+class TestFallbackTracebackFormat(unittest.TestCase, TracebackFormatMixin):
+    DEBUG_RANGES = False
+    def setUp(self) -> None:
+        self.original_unraisable_hook = sys.unraisablehook
+        sys.unraisablehook = lambda *args: None
+        self.original_hook = traceback._print_exception_bltin
+        traceback._print_exception_bltin = lambda *args: 1/0
+        return super().setUp()
+
+    def tearDown(self) -> None:
+        traceback._print_exception_bltin = self.original_hook
+        sys.unraisablehook = self.original_unraisable_hook
+        return super().tearDown()
+
 class BaseExceptionReportingTests:
 
     def get_exception(self, exception_or_callable):
@@ -1563,27 +2209,28 @@ def __repr__(self):
         err_msg = "b'please do not show me as numbers'"
         self.assertEqual(self.get_report(e), vanilla + err_msg + '\n')
 
-    def test_exception_with_note_with_multiple_notes(self):
-        e = ValueError(42)
-        vanilla = self.get_report(e)
+    def test_exception_with_multiple_notes(self):
+        for e in [ValueError(42), SyntaxError('bad syntax')]:
+            with self.subTest(e=e):
+                vanilla = self.get_report(e)
 
-        e.add_note('Note 1')
-        e.add_note('Note 2')
-        e.add_note('Note 3')
+                e.add_note('Note 1')
+                e.add_note('Note 2')
+                e.add_note('Note 3')
 
-        self.assertEqual(
-            self.get_report(e),
-            vanilla + 'Note 1\n' + 'Note 2\n' + 'Note 3\n')
+                self.assertEqual(
+                    self.get_report(e),
+                    vanilla + 'Note 1\n' + 'Note 2\n' + 'Note 3\n')
 
-        del e.__notes__
-        e.add_note('Note 4')
-        del e.__notes__
-        e.add_note('Note 5')
-        e.add_note('Note 6')
+                del e.__notes__
+                e.add_note('Note 4')
+                del e.__notes__
+                e.add_note('Note 5')
+                e.add_note('Note 6')
 
-        self.assertEqual(
-            self.get_report(e),
-            vanilla + 'Note 5\n' + 'Note 6\n')
+                self.assertEqual(
+                    self.get_report(e),
+                    vanilla + 'Note 5\n' + 'Note 6\n')
 
     def test_exception_qualname(self):
         class A:
@@ -1661,6 +2308,7 @@ def exc():
              f'  + Exception Group Traceback (most recent call last):\n'
              f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
              f'  |     exception_or_callable()\n'
+             f'  |     ~~~~~~~~~~~~~~~~~~~~~^^\n'
              f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 1}, in exc\n'
              f'  |     raise ExceptionGroup("eg", [ValueError(1), TypeError(2)])\n'
              f'  | ExceptionGroup: eg (2 sub-exceptions)\n'
@@ -1696,6 +2344,7 @@ def exc():
                     f'  + Exception Group Traceback (most recent call last):\n'
                     f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
                     f'  |     exception_or_callable()\n'
+                    f'  |     ~~~~~~~~~~~~~~~~~~~~~^^\n'
                     f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 5}, in exc\n'
                     f'  |     raise EG("eg2", [ValueError(3), TypeError(4)]) from e\n'
                     f'  | ExceptionGroup: eg2 (2 sub-exceptions)\n'
@@ -1747,6 +2396,7 @@ def exc():
              f'Traceback (most recent call last):\n'
              f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
              f'    exception_or_callable()\n'
+             f'    ~~~~~~~~~~~~~~~~~~~~~^^\n'
              f'  File "{__file__}", line {exc.__code__.co_firstlineno + 8}, in exc\n'
              f'    raise ImportError(5)\n'
              f'ImportError: 5\n')
@@ -1793,6 +2443,7 @@ def exc():
                     f'  + Exception Group Traceback (most recent call last):\n'
                     f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
                     f'  |     exception_or_callable()\n'
+                    f'  |     ~~~~~~~~~~~~~~~~~~~~~^^\n'
                     f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 11}, in exc\n'
                     f'  |     raise EG("top", [VE(5)])\n'
                     f'  | ExceptionGroup: top (1 sub-exception)\n'
@@ -1952,6 +2603,7 @@ def exc():
         expected = (f'  + Exception Group Traceback (most recent call last):\n'
                     f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
                     f'  |     exception_or_callable()\n'
+                    f'  |     ~~~~~~~~~~~~~~~~~~~~~^^\n'
                     f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 9}, in exc\n'
                     f'  |     raise ExceptionGroup("nested", excs)\n'
                     f'  | ExceptionGroup: nested (2 sub-exceptions)\n'
@@ -2003,6 +2655,7 @@ def exc():
         expected = (f'  + Exception Group Traceback (most recent call last):\n'
                     f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
                     f'  |     exception_or_callable()\n'
+                    f'  |     ~~~~~~~~~~~~~~~~~~~~~^^\n'
                     f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 10}, in exc\n'
                     f'  |     raise ExceptionGroup("nested", excs)\n'
                     f'  | ExceptionGroup: nested (2 sub-exceptions)\n'
@@ -2271,7 +2924,7 @@ def test_basics(self):
     def test_lazy_lines(self):
         linecache.clearcache()
         f = traceback.FrameSummary("f", 1, "dummy", lookup_line=False)
-        self.assertEqual(None, f._line)
+        self.assertEqual(None, f._lines)
         linecache.lazycache("f", globals())
         self.assertEqual(
             '"""Test cases for traceback module"""',
@@ -2388,7 +3041,7 @@ def some_inner(k, v):
 
     def test_custom_format_frame(self):
         class CustomStackSummary(traceback.StackSummary):
-            def format_frame_summary(self, frame_summary):
+            def format_frame_summary(self, frame_summary, colorize=False):
                 return f'{frame_summary.filename}:{frame_summary.lineno}'
 
         def some_inner():
@@ -2413,7 +3066,7 @@ def g():
         tb = g()
 
         class Skip_G(traceback.StackSummary):
-            def format_frame_summary(self, frame_summary):
+            def format_frame_summary(self, frame_summary, colorize=False):
                 if frame_summary.name == 'g':
                     return None
                 return super().format_frame_summary(frame_summary)
@@ -2433,10 +3086,9 @@ def __repr__(self) -> str:
         raise Exception("Unrepresentable")
 
 class TestTracebackException(unittest.TestCase):
-
-    def test_smoke(self):
+    def do_test_smoke(self, exc, expected_type_str):
         try:
-            1/0
+            raise exc
         except Exception as e:
             exc_obj = e
             exc = traceback.TracebackException.from_exception(e)
@@ -2446,9 +3098,23 @@ def test_smoke(self):
         self.assertEqual(None, exc.__context__)
         self.assertEqual(False, exc.__suppress_context__)
         self.assertEqual(expected_stack, exc.stack)
-        self.assertEqual(type(exc_obj), exc.exc_type)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(type(exc_obj), exc.exc_type)
+        self.assertEqual(expected_type_str, exc.exc_type_str)
         self.assertEqual(str(exc_obj), str(exc))
 
+    def test_smoke_builtin(self):
+        self.do_test_smoke(ValueError(42), 'ValueError')
+
+    def test_smoke_user_exception(self):
+        class MyException(Exception):
+            pass
+
+        self.do_test_smoke(
+            MyException('bad things happened'),
+            ('test.test_traceback.TestTracebackException.'
+             'test_smoke_user_exception.<locals>.MyException'))
+
     def test_from_exception(self):
         # Check all the parameters are accepted.
         def foo():
@@ -2469,7 +3135,9 @@ def foo():
         self.assertEqual(None, exc.__context__)
         self.assertEqual(False, exc.__suppress_context__)
         self.assertEqual(expected_stack, exc.stack)
-        self.assertEqual(type(exc_obj), exc.exc_type)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(type(exc_obj), exc.exc_type)
+        self.assertEqual(type(exc_obj).__name__, exc.exc_type_str)
         self.assertEqual(str(exc_obj), str(exc))
 
     def test_cause(self):
@@ -2491,7 +3159,9 @@ def test_cause(self):
         self.assertEqual(exc_context, exc.__context__)
         self.assertEqual(True, exc.__suppress_context__)
         self.assertEqual(expected_stack, exc.stack)
-        self.assertEqual(type(exc_obj), exc.exc_type)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(type(exc_obj), exc.exc_type)
+        self.assertEqual(type(exc_obj).__name__, exc.exc_type_str)
         self.assertEqual(str(exc_obj), str(exc))
 
     def test_context(self):
@@ -2511,7 +3181,9 @@ def test_context(self):
         self.assertEqual(exc_context, exc.__context__)
         self.assertEqual(False, exc.__suppress_context__)
         self.assertEqual(expected_stack, exc.stack)
-        self.assertEqual(type(exc_obj), exc.exc_type)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(type(exc_obj), exc.exc_type)
+        self.assertEqual(type(exc_obj).__name__, exc.exc_type_str)
         self.assertEqual(str(exc_obj), str(exc))
 
     def test_long_context_chain(self):
@@ -2556,7 +3228,9 @@ def test_compact_with_cause(self):
         self.assertEqual(None, exc.__context__)
         self.assertEqual(True, exc.__suppress_context__)
         self.assertEqual(expected_stack, exc.stack)
-        self.assertEqual(type(exc_obj), exc.exc_type)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(type(exc_obj), exc.exc_type)
+        self.assertEqual(type(exc_obj).__name__, exc.exc_type_str)
         self.assertEqual(str(exc_obj), str(exc))
 
     def test_compact_no_cause(self):
@@ -2576,9 +3250,22 @@ def test_compact_no_cause(self):
         self.assertEqual(exc_context, exc.__context__)
         self.assertEqual(False, exc.__suppress_context__)
         self.assertEqual(expected_stack, exc.stack)
-        self.assertEqual(type(exc_obj), exc.exc_type)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(type(exc_obj), exc.exc_type)
+        self.assertEqual(type(exc_obj).__name__, exc.exc_type_str)
         self.assertEqual(str(exc_obj), str(exc))
 
+    def test_no_save_exc_type(self):
+        try:
+            1/0
+        except Exception as e:
+            exc = e
+
+        te = traceback.TracebackException.from_exception(
+                 exc, save_exc_type=False)
+        with self.assertWarns(DeprecationWarning):
+            self.assertIsNone(te.exc_type)
+
     def test_no_refs_to_exception_and_traceback_objects(self):
         try:
             1/0
@@ -2792,6 +3479,20 @@ def test_exception_group_format_exception_only(self):
 
         self.assertEqual(formatted, expected)
 
+    def test_exception_group_format_exception_onlyi_recursive(self):
+        teg = traceback.TracebackException.from_exception(self.eg)
+        formatted = ''.join(teg.format_exception_only(show_group=True)).split('\n')
+        expected = [
+                     'ExceptionGroup: eg2 (2 sub-exceptions)',
+                     '   ExceptionGroup: eg1 (2 sub-exceptions)',
+                     '      ZeroDivisionError: division by zero',
+                     '      ValueError: 42',
+                     '   ValueError: 24',
+                     ''
+                   ]
+
+        self.assertEqual(formatted, expected)
+
     def test_exception_group_format(self):
         teg = traceback.TracebackException.from_exception(self.eg)
 
@@ -2813,6 +3514,7 @@ def test_exception_group_format(self):
                     f'      | Traceback (most recent call last):',
                     f'      |   File "{__file__}", line {lno_g+9}, in _get_exception_group',
                     f'      |     f()',
+                    f'      |     ~^^',
                     f'      |   File "{__file__}", line {lno_f+1}, in f',
                     f'      |     1/0',
                     f'      |     ~^~',
@@ -2821,6 +3523,7 @@ def test_exception_group_format(self):
                     f'      | Traceback (most recent call last):',
                     f'      |   File "{__file__}", line {lno_g+13}, in _get_exception_group',
                     f'      |     g(42)',
+                    f'      |     ~^^^^',
                     f'      |   File "{__file__}", line {lno_g+1}, in g',
                     f'      |     raise ValueError(v)',
                     f'      | ValueError: 42',
@@ -2829,6 +3532,7 @@ def test_exception_group_format(self):
                     f'    | Traceback (most recent call last):',
                     f'    |   File "{__file__}", line {lno_g+20}, in _get_exception_group',
                     f'    |     g(24)',
+                    f'    |     ~^^^^',
                     f'    |   File "{__file__}", line {lno_g+1}, in g',
                     f'    |     raise ValueError(v)',
                     f'    | ValueError: 24',
@@ -3525,6 +4229,7 @@ def CHECK(a, b, expected):
         CHECK("AttributeError", "AttributeErrorTests", 10)
         CHECK("ABA", "AAB", 4)
 
+    @support.requires_resource('cpu')
     def test_levenshtein_distance_short_circuit(self):
         if not LEVENSHTEIN_DATA_FILE.is_file():
             self.fail(
@@ -3549,6 +4254,115 @@ def test_levenshtein_distance_short_circuit(self):
                 res3 = traceback._levenshtein_distance(a, b, threshold)
                 self.assertGreater(res3, threshold, msg=(a, b, threshold))
 
+class TestColorizedTraceback(unittest.TestCase):
+    def test_colorized_traceback(self):
+        def foo(*args):
+            x = {'a':{'b': None}}
+            y = x['a']['b']['c']
+
+        def baz(*args):
+            return foo(1,2,3,4)
+
+        def bar():
+            return baz(1,
+                    2,3
+                    ,4)
+        try:
+            bar()
+        except Exception as e:
+            exc = traceback.TracebackException.from_exception(
+                e, capture_locals=True
+            )
+        lines = "".join(exc.format(colorize=True))
+        red = traceback._ANSIColors.RED
+        boldr = traceback._ANSIColors.BOLD_RED
+        reset = traceback._ANSIColors.RESET
+        self.assertIn("y = " + red + "x['a']['b']" + reset + boldr + "['c']" + reset, lines)
+        self.assertIn("return " + red + "foo" + reset + boldr + "(1,2,3,4)" + reset, lines)
+        self.assertIn("return " + red + "baz" + reset + boldr + "(1," + reset, lines)
+        self.assertIn(boldr + "2,3" + reset, lines)
+        self.assertIn(boldr + ",4)" + reset, lines)
+        self.assertIn(red + "bar" + reset + boldr + "()" + reset, lines)
+
+    def test_colorized_syntax_error(self):
+        try:
+            compile("a $ b", "<string>", "exec")
+        except SyntaxError as e:
+            exc = traceback.TracebackException.from_exception(
+                e, capture_locals=True
+            )
+        actual = "".join(exc.format(colorize=True))
+        red = traceback._ANSIColors.RED
+        magenta = traceback._ANSIColors.MAGENTA
+        boldm = traceback._ANSIColors.BOLD_MAGENTA
+        boldr = traceback._ANSIColors.BOLD_RED
+        reset = traceback._ANSIColors.RESET
+        expected = "".join([
+        f'  File {magenta}"<string>"{reset}, line {magenta}1{reset}\n',
+        f'    a {boldr}${reset} b\n',
+        f'      {boldr}^{reset}\n',
+        f'{boldm}SyntaxError{reset}: {magenta}invalid syntax{reset}\n']
+        )
+        self.assertIn(expected, actual)
+
+    def test_colorized_traceback_is_the_default(self):
+        def foo():
+            1/0
+
+        from _testcapi import exception_print
+        try:
+            foo()
+            self.fail("No exception thrown.")
+        except Exception as e:
+            with captured_output("stderr") as tbstderr:
+                with unittest.mock.patch('traceback._can_colorize', return_value=True):
+                    exception_print(e)
+            actual = tbstderr.getvalue().splitlines()
+
+        red = traceback._ANSIColors.RED
+        boldr = traceback._ANSIColors.BOLD_RED
+        magenta = traceback._ANSIColors.MAGENTA
+        boldm = traceback._ANSIColors.BOLD_MAGENTA
+        reset = traceback._ANSIColors.RESET
+        lno_foo = foo.__code__.co_firstlineno
+        expected = ['Traceback (most recent call last):',
+            f'  File {magenta}"{__file__}"{reset}, '
+            f'line {magenta}{lno_foo+5}{reset}, in {magenta}test_colorized_traceback_is_the_default{reset}',
+            f'    {red}foo{reset+boldr}(){reset}',
+            f'    {red}~~~{reset+boldr}^^{reset}',
+            f'  File {magenta}"{__file__}"{reset}, '
+            f'line {magenta}{lno_foo+1}{reset}, in {magenta}foo{reset}',
+            f'    {red}1{reset+boldr}/{reset+red}0{reset}',
+            f'    {red}~{reset+boldr}^{reset+red}~{reset}',
+            f'{boldm}ZeroDivisionError{reset}: {magenta}division by zero{reset}']
+        self.assertEqual(actual, expected)
+
+    def test_colorized_detection_checks_for_environment_variables(self):
+        if sys.platform == "win32":
+            virtual_patching = unittest.mock.patch("nt._supports_virtual_terminal", return_value=True)
+        else:
+            virtual_patching = contextlib.nullcontext()
+        with virtual_patching:
+            with unittest.mock.patch("os.isatty") as isatty_mock:
+                isatty_mock.return_value = True
+                with unittest.mock.patch("os.environ", {'TERM': 'dumb'}):
+                    self.assertEqual(traceback._can_colorize(), False)
+                with unittest.mock.patch("os.environ", {'PYTHON_COLORS': '1'}):
+                    self.assertEqual(traceback._can_colorize(), True)
+                with unittest.mock.patch("os.environ", {'PYTHON_COLORS': '0'}):
+                    self.assertEqual(traceback._can_colorize(), False)
+                with unittest.mock.patch("os.environ", {'NO_COLOR': '1'}):
+                    self.assertEqual(traceback._can_colorize(), False)
+                with unittest.mock.patch("os.environ", {'NO_COLOR': '1', "PYTHON_COLORS": '1'}):
+                    self.assertEqual(traceback._can_colorize(), True)
+                with unittest.mock.patch("os.environ", {'FORCE_COLOR': '1'}):
+                    self.assertEqual(traceback._can_colorize(), True)
+                with unittest.mock.patch("os.environ", {'FORCE_COLOR': '1', 'NO_COLOR': '1'}):
+                    self.assertEqual(traceback._can_colorize(), False)
+                with unittest.mock.patch("os.environ", {'FORCE_COLOR': '1', "PYTHON_COLORS": '0'}):
+                    self.assertEqual(traceback._can_colorize(), False)
+                isatty_mock.return_value = False
+                self.assertEqual(traceback._can_colorize(), False)
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_tracemalloc.py b/Lib/test/test_tracemalloc.py
index 94bcee302fe730..bea124521032d1 100644
--- a/Lib/test/test_tracemalloc.py
+++ b/Lib/test/test_tracemalloc.py
@@ -11,8 +11,10 @@
 
 try:
     import _testcapi
+    import _testinternalcapi
 except ImportError:
     _testcapi = None
+    _testinternalcapi = None
 
 
 EMPTY_STRING_SIZE = sys.getsizeof(b'')
@@ -171,9 +173,11 @@ def test_set_traceback_limit(self):
         self.assertEqual(len(traceback), 1)
         self.assertEqual(traceback, obj_traceback)
 
-    def find_trace(self, traces, traceback):
+    def find_trace(self, traces, traceback, size):
+        # filter also by size to ignore the memory allocated by
+        # _PyRefchain_Trace() if Python is built with Py_TRACE_REFS.
         for trace in traces:
-            if trace[2] == traceback._frames:
+            if trace[2] == traceback._frames and trace[1] == size:
                 return trace
 
         self.fail("trace not found")
@@ -184,11 +188,10 @@ def test_get_traces(self):
         obj, obj_traceback = allocate_bytes(obj_size)
 
         traces = tracemalloc._get_traces()
-        trace = self.find_trace(traces, obj_traceback)
+        trace = self.find_trace(traces, obj_traceback, obj_size)
 
         self.assertIsInstance(trace, tuple)
         domain, size, traceback, length = trace
-        self.assertEqual(size, obj_size)
         self.assertEqual(traceback, obj_traceback._frames)
 
         tracemalloc.stop()
@@ -206,17 +209,18 @@ def allocate_bytes4(size):
         # Ensure that two identical tracebacks are not duplicated
         tracemalloc.stop()
         tracemalloc.start(4)
-        obj_size = 123
-        obj1, obj1_traceback = allocate_bytes4(obj_size)
-        obj2, obj2_traceback = allocate_bytes4(obj_size)
+        obj1_size = 123
+        obj2_size = 125
+        obj1, obj1_traceback = allocate_bytes4(obj1_size)
+        obj2, obj2_traceback = allocate_bytes4(obj2_size)
 
         traces = tracemalloc._get_traces()
 
         obj1_traceback._frames = tuple(reversed(obj1_traceback._frames))
         obj2_traceback._frames = tuple(reversed(obj2_traceback._frames))
 
-        trace1 = self.find_trace(traces, obj1_traceback)
-        trace2 = self.find_trace(traces, obj2_traceback)
+        trace1 = self.find_trace(traces, obj1_traceback, obj1_size)
+        trace2 = self.find_trace(traces, obj2_traceback, obj2_size)
         domain1, size1, traceback1, length1 = trace1
         domain2, size2, traceback2, length2 = trace2
         self.assertIs(traceback2, traceback1)
@@ -1008,7 +1012,7 @@ def tearDown(self):
         tracemalloc.stop()
 
     def get_traceback(self):
-        frames = _testcapi.tracemalloc_get_traceback(self.domain, self.ptr)
+        frames = _testinternalcapi._PyTraceMalloc_GetTraceback(self.domain, self.ptr)
         if frames is not None:
             return tracemalloc.Traceback(frames)
         else:
diff --git a/Lib/test/test_ttk/test_style.py b/Lib/test/test_ttk/test_style.py
index 0ec95cf6b5ffc9..9a04a95dc40d65 100644
--- a/Lib/test/test_ttk/test_style.py
+++ b/Lib/test/test_ttk/test_style.py
@@ -2,6 +2,7 @@
 import sys
 import tkinter
 from tkinter import ttk
+from tkinter import TclError
 from test import support
 from test.support import requires
 from test.test_tkinter.support import AbstractTkTest, get_tk_patchlevel
@@ -122,7 +123,6 @@ def test_theme_use(self):
 
         self.style.theme_use(curr_theme)
 
-
     def test_configure_custom_copy(self):
         style = self.style
 
@@ -170,12 +170,276 @@ def test_map_custom_copy(self):
                     newname = f'C.{name}'
                     self.assertEqual(style.map(newname), {})
                     style.map(newname, **default)
-                    if theme == 'alt' and name == '.' and get_tk_patchlevel() < (8, 6, 1):
+                    if theme == 'alt' and name == '.' and get_tk_patchlevel(self.root) < (8, 6, 1):
                         default['embossed'] = [('disabled', '1')]
                     self.assertEqual(style.map(newname), default)
                     for key, value in default.items():
                         self.assertEqual(style.map(newname, key), value)
 
+    def test_element_options(self):
+        style = self.style
+        element_names = style.element_names()
+        self.assertNotIsInstance(element_names, str)
+        for name in element_names:
+            self.assertIsInstance(name, str)
+            element_options = style.element_options(name)
+            self.assertNotIsInstance(element_options, str)
+            for optname in element_options:
+                self.assertIsInstance(optname, str)
+
+    def test_element_create_errors(self):
+        style = self.style
+        with self.assertRaises(TypeError):
+            style.element_create('plain.newelem')
+        with self.assertRaisesRegex(TclError, 'No such element type spam'):
+            style.element_create('plain.newelem', 'spam')
+
+    def test_element_create_from(self):
+        style = self.style
+        style.element_create('plain.background', 'from', 'default')
+        self.assertIn('plain.background', style.element_names())
+        style.element_create('plain.arrow', 'from', 'default', 'rightarrow')
+        self.assertIn('plain.arrow', style.element_names())
+
+    def test_element_create_from_errors(self):
+        style = self.style
+        with self.assertRaises(IndexError):
+            style.element_create('plain.newelem', 'from')
+        with self.assertRaisesRegex(TclError, 'theme "spam" doesn\'t exist'):
+            style.element_create('plain.newelem', 'from', 'spam')
+
+    def test_element_create_image(self):
+        style = self.style
+        image = tkinter.PhotoImage(master=self.root, width=12, height=10)
+        style.element_create('block', 'image', image)
+        self.assertIn('block', style.element_names())
+
+        style.layout('TestLabel1', [('block', {'sticky': 'news'})])
+        a = ttk.Label(self.root, style='TestLabel1')
+        a.pack(expand=True, fill='both')
+        self.assertEqual(a.winfo_reqwidth(), 12)
+        self.assertEqual(a.winfo_reqheight(), 10)
+
+        imgfile = support.findfile('python.xbm', subdir='tkinterdata')
+        img1 = tkinter.BitmapImage(master=self.root, file=imgfile,
+                                   foreground='yellow', background='blue')
+        img2 = tkinter.BitmapImage(master=self.root, file=imgfile,
+                                   foreground='blue', background='yellow')
+        img3 = tkinter.BitmapImage(master=self.root, file=imgfile,
+                                   foreground='white', background='black')
+        style.element_create('Button.button', 'image',
+                             img1, ('pressed', img2), ('active', img3),
+                             border=(2, 4), sticky='we')
+        self.assertIn('Button.button', style.element_names())
+
+        style.layout('Button', [('Button.button', {'sticky': 'news'})])
+        b = ttk.Button(self.root, style='Button')
+        b.pack(expand=True, fill='both')
+        self.assertEqual(b.winfo_reqwidth(), 16)
+        self.assertEqual(b.winfo_reqheight(), 16)
+
+    def test_element_create_image_errors(self):
+        style = self.style
+        image = tkinter.PhotoImage(master=self.root, width=10, height=10)
+        with self.assertRaises(IndexError):
+            style.element_create('block2', 'image')
+        with self.assertRaises(TypeError):
+            style.element_create('block2', 'image', image, 1)
+        with self.assertRaises(ValueError):
+            style.element_create('block2', 'image', image, ())
+        with self.assertRaisesRegex(TclError, 'Invalid state name'):
+            style.element_create('block2', 'image', image, ('spam', image))
+        with self.assertRaisesRegex(TclError, 'Invalid state name'):
+            style.element_create('block2', 'image', image, (1, image))
+        with self.assertRaises(TypeError):
+            style.element_create('block2', 'image', image, ('pressed', 1, image))
+        with self.assertRaises(TypeError):
+            style.element_create('block2', 'image', image, (1, 'selected', image))
+        with self.assertRaisesRegex(TclError, 'bad option'):
+            style.element_create('block2', 'image', image, spam=1)
+
+    def test_element_create_vsapi_1(self):
+        style = self.style
+        if 'xpnative' not in style.theme_names():
+            self.skipTest("requires 'xpnative' theme")
+        style.element_create('smallclose', 'vsapi', 'WINDOW', 19, [
+                             ('disabled', 4),
+                             ('pressed', 3),
+                             ('active', 2),
+                             ('', 1)])
+        style.layout('CloseButton',
+                     [('CloseButton.smallclose', {'sticky': 'news'})])
+        b = ttk.Button(self.root, style='CloseButton')
+        b.pack(expand=True, fill='both')
+        self.assertEqual(b.winfo_reqwidth(), 13)
+        self.assertEqual(b.winfo_reqheight(), 13)
+
+    def test_element_create_vsapi_2(self):
+        style = self.style
+        if 'xpnative' not in style.theme_names():
+            self.skipTest("requires 'xpnative' theme")
+        style.element_create('pin', 'vsapi', 'EXPLORERBAR', 3, [
+                             ('pressed', '!selected', 3),
+                             ('active', '!selected', 2),
+                             ('pressed', 'selected', 6),
+                             ('active', 'selected', 5),
+                             ('selected', 4),
+                             ('', 1)])
+        style.layout('Explorer.Pin',
+                     [('Explorer.Pin.pin', {'sticky': 'news'})])
+        pin = ttk.Checkbutton(self.root, style='Explorer.Pin')
+        pin.pack(expand=True, fill='both')
+        self.assertEqual(pin.winfo_reqwidth(), 16)
+        self.assertEqual(pin.winfo_reqheight(), 16)
+
+    def test_element_create_vsapi_3(self):
+        style = self.style
+        if 'xpnative' not in style.theme_names():
+            self.skipTest("requires 'xpnative' theme")
+        style.element_create('headerclose', 'vsapi', 'EXPLORERBAR', 2, [
+                             ('pressed', 3),
+                             ('active', 2),
+                             ('', 1)])
+        style.layout('Explorer.CloseButton',
+                     [('Explorer.CloseButton.headerclose', {'sticky': 'news'})])
+        b = ttk.Button(self.root, style='Explorer.CloseButton')
+        b.pack(expand=True, fill='both')
+        self.assertEqual(b.winfo_reqwidth(), 16)
+        self.assertEqual(b.winfo_reqheight(), 16)
+
+    def test_theme_create(self):
+        style = self.style
+        curr_theme = style.theme_use()
+        curr_layout = style.layout('TLabel')
+        style.theme_create('testtheme1')
+        self.assertIn('testtheme1', style.theme_names())
+
+        style.theme_create('testtheme2', settings={
+            'elem' : {'element create': ['from', 'default'],},
+            'TLabel' : {
+                'configure': {'padding': 10},
+                'layout': [('elem', {'sticky': 'we'})],
+            },
+        })
+        self.assertIn('testtheme2', style.theme_names())
+
+        style.theme_create('testtheme3', 'testtheme2')
+        self.assertIn('testtheme3', style.theme_names())
+
+        style.theme_use('testtheme1')
+        self.assertEqual(style.element_names(), ())
+        self.assertEqual(style.layout('TLabel'), curr_layout)
+
+        style.theme_use('testtheme2')
+        self.assertEqual(style.element_names(), ('elem',))
+        self.assertEqual(style.lookup('TLabel', 'padding'), '10')
+        self.assertEqual(style.layout('TLabel'), [('elem', {'sticky': 'we'})])
+
+        style.theme_use('testtheme3')
+        self.assertEqual(style.element_names(), ())
+        self.assertEqual(style.lookup('TLabel', 'padding'), '')
+        self.assertEqual(style.layout('TLabel'), [('elem', {'sticky': 'we'})])
+
+        style.theme_use(curr_theme)
+
+    def test_theme_create_image(self):
+        style = self.style
+        curr_theme = style.theme_use()
+        image = tkinter.PhotoImage(master=self.root, width=10, height=10)
+        new_theme = 'testtheme4'
+        style.theme_create(new_theme, settings={
+            'block' : {
+                'element create': ['image', image, {'width': 120, 'height': 100}],
+            },
+            'TestWidget.block2' : {
+                'element create': ['image', image],
+            },
+            'TestWidget' : {
+                'configure': {
+                    'anchor': 'left',
+                    'padding': (3, 0, 0, 2),
+                    'foreground': 'yellow',
+                },
+                'map': {
+                    'foreground': [
+                        ('pressed', 'red'),
+                        ('active', 'disabled', 'blue'),
+                    ],
+                },
+                'layout': [
+                    ('TestWidget.block', {'sticky': 'we', 'side': 'left'}),
+                    ('TestWidget.border', {
+                        'sticky': 'nsw',
+                        'border': 1,
+                        'children': [
+                            ('TestWidget.block2', {'sticky': 'nswe'})
+                        ]
+                    })
+                ],
+            },
+        })
+
+        style.theme_use(new_theme)
+        self.assertIn('block', style.element_names())
+        self.assertEqual(style.lookup('TestWidget', 'anchor'), 'left')
+        self.assertEqual(style.lookup('TestWidget', 'padding'), '3 0 0 2')
+        self.assertEqual(style.lookup('TestWidget', 'foreground'), 'yellow')
+        self.assertEqual(style.lookup('TestWidget', 'foreground',
+                                      ['active']), 'yellow')
+        self.assertEqual(style.lookup('TestWidget', 'foreground',
+                                      ['active', 'pressed']), 'red')
+        self.assertEqual(style.lookup('TestWidget', 'foreground',
+                                      ['active', 'disabled']), 'blue')
+        self.assertEqual(style.layout('TestWidget'),
+            [
+                ('TestWidget.block', {'side': 'left', 'sticky': 'we'}),
+                ('TestWidget.border', {
+                    'sticky': 'nsw',
+                    'border': '1',
+                    'children': [('TestWidget.block2', {'sticky': 'nswe'})]
+                })
+            ])
+
+        b = ttk.Label(self.root, style='TestWidget')
+        b.pack(expand=True, fill='both')
+        self.assertEqual(b.winfo_reqwidth(), 134)
+        self.assertEqual(b.winfo_reqheight(), 100)
+
+        style.theme_use(curr_theme)
+
+    def test_theme_create_vsapi(self):
+        style = self.style
+        if 'xpnative' not in style.theme_names():
+            self.skipTest("requires 'xpnative' theme")
+        curr_theme = style.theme_use()
+        new_theme = 'testtheme5'
+        style.theme_create(new_theme, settings={
+            'pin' : {
+                'element create': ['vsapi', 'EXPLORERBAR', 3, [
+                                   ('pressed', '!selected', 3),
+                                   ('active', '!selected', 2),
+                                   ('pressed', 'selected', 6),
+                                   ('active', 'selected', 5),
+                                   ('selected', 4),
+                                   ('', 1)]],
+            },
+            'Explorer.Pin' : {
+                'layout': [('Explorer.Pin.pin', {'sticky': 'news'})],
+            },
+        })
+
+        style.theme_use(new_theme)
+        self.assertIn('pin', style.element_names())
+        self.assertEqual(style.layout('Explorer.Pin'),
+                         [('Explorer.Pin.pin', {'sticky': 'nswe'})])
+
+        pin = ttk.Checkbutton(self.root, style='Explorer.Pin')
+        pin.pack(expand=True, fill='both')
+        self.assertEqual(pin.winfo_reqwidth(), 16)
+        self.assertEqual(pin.winfo_reqheight(), 16)
+
+        style.theme_use(curr_theme)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ttk/test_widgets.py b/Lib/test/test_ttk/test_widgets.py
index 79d65b496abdc6..fd1a748a498ac5 100644
--- a/Lib/test/test_ttk/test_widgets.py
+++ b/Lib/test/test_ttk/test_widgets.py
@@ -5,7 +5,7 @@
 import sys
 
 from test.test_ttk_textonly import MockTclObj
-from test.test_tkinter.support import (AbstractTkTest, tcl_version, get_tk_patchlevel,
+from test.test_tkinter.support import (AbstractTkTest, tk_version, get_tk_patchlevel,
                                   simulate_mouse_click, AbstractDefaultRootTest)
 from test.test_tkinter.widget_tests import (add_standard_options,
     AbstractWidgetTest, StandardOptionsTests, IntegerSizeTests, PixelSizeTests)
@@ -19,7 +19,7 @@ def test_configure_class(self):
         widget = self.create()
         self.assertEqual(widget['class'], '')
         errmsg='attempt to change read-only option'
-        if get_tk_patchlevel() < (8, 6, 0, 'beta', 3):
+        if get_tk_patchlevel(self.root) < (8, 6, 0, 'beta', 3):
             errmsg='Attempt to change read-only option'
         self.checkInvalidParam(widget, 'class', 'Foo', errmsg=errmsg)
         widget2 = self.create(class_='Foo')
@@ -560,7 +560,7 @@ def test_configure_orient(self):
         widget = self.create()
         self.assertEqual(str(widget['orient']), 'vertical')
         errmsg='attempt to change read-only option'
-        if get_tk_patchlevel() < (8, 6, 0, 'beta', 3):
+        if get_tk_patchlevel(self.root) < (8, 6, 0, 'beta', 3):
             errmsg='Attempt to change read-only option'
         self.checkInvalidParam(widget, 'orient', 'horizontal',
                 errmsg=errmsg)
@@ -1526,7 +1526,7 @@ def test_heading(self):
 
     def test_heading_callback(self):
         def simulate_heading_click(x, y):
-            if tcl_version >= (8, 6):
+            if tk_version >= (8, 6):
                 self.assertEqual(self.tv.identify_column(x), '#0')
                 self.assertEqual(self.tv.identify_region(x, y), 'heading')
             simulate_mouse_click(self.tv, x, y)
diff --git a/Lib/test/test_ttk_textonly.py b/Lib/test/test_ttk_textonly.py
index 96dc179a69ecac..e6525c4d6c6982 100644
--- a/Lib/test/test_ttk_textonly.py
+++ b/Lib/test/test_ttk_textonly.py
@@ -179,7 +179,7 @@ def test_format_elemcreate(self):
         # don't format returned values as a tcl script
         # minimum acceptable for image type
         self.assertEqual(ttk._format_elemcreate('image', False, 'test'),
-            ("test ", ()))
+            ("test", ()))
         # specifying a state spec
         self.assertEqual(ttk._format_elemcreate('image', False, 'test',
             ('', 'a')), ("test {} a", ()))
@@ -203,17 +203,19 @@ def test_format_elemcreate(self):
         # don't format returned values as a tcl script
         # minimum acceptable for vsapi
         self.assertEqual(ttk._format_elemcreate('vsapi', False, 'a', 'b'),
-            ("a b ", ()))
+            ('a', 'b', ('', 1), ()))
         # now with a state spec with multiple states
         self.assertEqual(ttk._format_elemcreate('vsapi', False, 'a', 'b',
-            ('a', 'b', 'c')), ("a b {a b} c", ()))
+            [('a', 'b', 'c')]), ('a', 'b', ('a b', 'c'), ()))
         # state spec and option
         self.assertEqual(ttk._format_elemcreate('vsapi', False, 'a', 'b',
-            ('a', 'b'), opt='x'), ("a b a b", ("-opt", "x")))
+            [('a', 'b')], opt='x'), ('a', 'b', ('a', 'b'), ("-opt", "x")))
         # format returned values as a tcl script
         # state spec with a multivalue and an option
         self.assertEqual(ttk._format_elemcreate('vsapi', True, 'a', 'b',
-            ('a', 'b', [1, 2]), opt='x'), ("{a b {a b} {1 2}}", "-opt x"))
+            opt='x'), ("a b {{} 1}", "-opt x"))
+        self.assertEqual(ttk._format_elemcreate('vsapi', True, 'a', 'b',
+            [('a', 'b', [1, 2])], opt='x'), ("a b {{a b} {1 2}}", "-opt x"))
 
         # Testing type = from
         # from type expects at least a type name
@@ -222,9 +224,9 @@ def test_format_elemcreate(self):
         self.assertEqual(ttk._format_elemcreate('from', False, 'a'),
             ('a', ()))
         self.assertEqual(ttk._format_elemcreate('from', False, 'a', 'b'),
-            ('a', ('b', )))
+            ('a', ('b',)))
         self.assertEqual(ttk._format_elemcreate('from', True, 'a', 'b'),
-            ('{a}', 'b'))
+            ('a', 'b'))
 
 
     def test_format_layoutlist(self):
@@ -326,6 +328,22 @@ def test_script_from_settings(self):
             "ttk::style element create thing image {name {state1 state2} val} "
             "-opt {3 2m}")
 
+        vsapi = {'pin': {'element create':
+            ['vsapi', 'EXPLORERBAR', 3, [
+             ('pressed', '!selected', 3),
+             ('active', '!selected', 2),
+             ('pressed', 'selected', 6),
+             ('active', 'selected', 5),
+             ('selected', 4),
+             ('', 1)]]}}
+        self.assertEqual(ttk._script_from_settings(vsapi),
+            "ttk::style element create pin vsapi EXPLORERBAR 3 {"
+            "{pressed !selected} 3 "
+            "{active !selected} 2 "
+            "{pressed selected} 6 "
+            "{active selected} 5 "
+            "selected 4 "
+            "{} 1} ")
 
     def test_tclobj_to_py(self):
         self.assertEqual(
diff --git a/Lib/test/test_tty.py b/Lib/test/test_tty.py
new file mode 100644
index 00000000000000..af20864aac361e
--- /dev/null
+++ b/Lib/test/test_tty.py
@@ -0,0 +1,84 @@
+import os
+import unittest
+from test.support.import_helper import import_module
+
+termios = import_module('termios')
+tty = import_module('tty')
+
+
+@unittest.skipUnless(hasattr(os, 'openpty'), "need os.openpty()")
+class TestTty(unittest.TestCase):
+
+    def setUp(self):
+        master_fd, self.fd = os.openpty()
+        self.addCleanup(os.close, master_fd)
+        self.stream = self.enterContext(open(self.fd, 'wb', buffering=0))
+        self.fd = self.stream.fileno()
+        self.mode = termios.tcgetattr(self.fd)
+        self.addCleanup(termios.tcsetattr, self.fd, termios.TCSANOW, self.mode)
+        self.addCleanup(termios.tcsetattr, self.fd, termios.TCSAFLUSH, self.mode)
+
+    def check_cbreak(self, mode):
+        self.assertEqual(mode[0] & termios.ICRNL, 0)
+        self.assertEqual(mode[3] & termios.ECHO, 0)
+        self.assertEqual(mode[3] & termios.ICANON, 0)
+        self.assertEqual(mode[6][termios.VMIN], 1)
+        self.assertEqual(mode[6][termios.VTIME], 0)
+
+    def check_raw(self, mode):
+        self.check_cbreak(mode)
+        self.assertEqual(mode[0] & termios.ISTRIP, 0)
+        self.assertEqual(mode[0] & termios.ICRNL, 0)
+        self.assertEqual(mode[1] & termios.OPOST, 0)
+        self.assertEqual(mode[2] & termios.PARENB, termios.CS8 & termios.PARENB)
+        self.assertEqual(mode[2] & termios.CSIZE, termios.CS8 & termios.CSIZE)
+        self.assertEqual(mode[2] & termios.CS8, termios.CS8)
+        self.assertEqual(mode[3] & termios.ECHO, 0)
+        self.assertEqual(mode[3] & termios.ICANON, 0)
+        self.assertEqual(mode[3] & termios.ISIG, 0)
+        self.assertEqual(mode[6][termios.VMIN], 1)
+        self.assertEqual(mode[6][termios.VTIME], 0)
+
+    def test_cfmakeraw(self):
+        mode = termios.tcgetattr(self.fd)
+        self.assertEqual(mode, self.mode)
+        tty.cfmakeraw(mode)
+        self.check_raw(mode)
+        self.assertEqual(mode[4], self.mode[4])
+        self.assertEqual(mode[5], self.mode[5])
+
+    def test_cfmakecbreak(self):
+        mode = termios.tcgetattr(self.fd)
+        self.assertEqual(mode, self.mode)
+        tty.cfmakecbreak(mode)
+        self.check_cbreak(mode)
+        self.assertEqual(mode[1], self.mode[1])
+        self.assertEqual(mode[2], self.mode[2])
+        self.assertEqual(mode[4], self.mode[4])
+        self.assertEqual(mode[5], self.mode[5])
+
+    def test_setraw(self):
+        mode0 = termios.tcgetattr(self.fd)
+        mode1 = tty.setraw(self.fd)
+        self.assertEqual(mode1, mode0)
+        mode2 = termios.tcgetattr(self.fd)
+        self.check_raw(mode2)
+        mode3 = tty.setraw(self.fd, termios.TCSANOW)
+        self.assertEqual(mode3, mode2)
+        tty.setraw(self.stream)
+        tty.setraw(fd=self.fd, when=termios.TCSANOW)
+
+    def test_setcbreak(self):
+        mode0 = termios.tcgetattr(self.fd)
+        mode1 = tty.setcbreak(self.fd)
+        self.assertEqual(mode1, mode0)
+        mode2 = termios.tcgetattr(self.fd)
+        self.check_cbreak(mode2)
+        mode3 = tty.setcbreak(self.fd, termios.TCSANOW)
+        self.assertEqual(mode3, mode2)
+        tty.setcbreak(self.stream)
+        tty.setcbreak(fd=self.fd, when=termios.TCSANOW)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_turtle.py b/Lib/test/test_turtle.py
index 3f9f129a3dd200..14121a590a5026 100644
--- a/Lib/test/test_turtle.py
+++ b/Lib/test/test_turtle.py
@@ -461,5 +461,25 @@ def test_teleport(self):
             self.assertTrue(tpen.isdown())
 
 
+class TestModuleLevel(unittest.TestCase):
+    def test_all_signatures(self):
+        import inspect
+
+        known_signatures = {
+            'teleport':
+                '(x=None, y=None, *, fill_gap: bool = False) -> None',
+            'undo': '()',
+            'goto': '(x, y=None)',
+            'bgcolor': '(*args)',
+            'pen': '(pen=None, **pendict)',
+        }
+
+        for name in known_signatures:
+            with self.subTest(name=name):
+                obj = getattr(turtle, name)
+                sig = inspect.signature(obj)
+                self.assertEqual(str(sig), known_signatures[name])
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_type_aliases.py b/Lib/test/test_type_aliases.py
new file mode 100644
index 00000000000000..9c325bc595f585
--- /dev/null
+++ b/Lib/test/test_type_aliases.py
@@ -0,0 +1,330 @@
+import pickle
+import types
+import unittest
+from test.support import check_syntax_error, run_code
+from test.typinganndata import mod_generics_cache
+
+from typing import Callable, TypeAliasType, TypeVar, get_args
+
+
+class TypeParamsInvalidTest(unittest.TestCase):
+    def test_name_collisions(self):
+        check_syntax_error(self, 'type TA1[A, **A] = None', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'type T[A, *A] = None', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'type T[*A, **A] = None', "duplicate type parameter 'A'")
+
+    def test_name_non_collision_02(self):
+        ns = run_code("""type TA1[A] = lambda A: A""")
+        self.assertIsInstance(ns["TA1"], TypeAliasType)
+        self.assertTrue(callable(ns["TA1"].__value__))
+        self.assertEqual("arg", ns["TA1"].__value__("arg"))
+
+    def test_name_non_collision_03(self):
+        ns = run_code("""
+            class Outer[A]:
+                type TA1[A] = None
+            """
+        )
+        outer_A, = ns["Outer"].__type_params__
+        inner_A, = ns["Outer"].TA1.__type_params__
+        self.assertIsNot(outer_A, inner_A)
+
+
+class TypeParamsAccessTest(unittest.TestCase):
+    def test_alias_access_01(self):
+        ns = run_code("type TA1[A, B] = dict[A, B]")
+        alias = ns["TA1"]
+        self.assertIsInstance(alias, TypeAliasType)
+        self.assertEqual(alias.__type_params__, get_args(alias.__value__))
+
+    def test_alias_access_02(self):
+        ns = run_code("""
+            type TA1[A, B] = TA1[A, B] | int
+            """
+        )
+        alias = ns["TA1"]
+        self.assertIsInstance(alias, TypeAliasType)
+        A, B = alias.__type_params__
+        self.assertEqual(alias.__value__, alias[A, B] | int)
+
+    def test_alias_access_03(self):
+        ns = run_code("""
+            class Outer[A]:
+                def inner[B](self):
+                    type TA1[C] = TA1[A, B] | int
+                    return TA1
+            """
+        )
+        cls = ns["Outer"]
+        A, = cls.__type_params__
+        B, = cls.inner.__type_params__
+        alias = cls.inner(None)
+        self.assertIsInstance(alias, TypeAliasType)
+        alias2 = cls.inner(None)
+        self.assertIsNot(alias, alias2)
+        self.assertEqual(len(alias.__type_params__), 1)
+
+        self.assertEqual(alias.__value__, alias[A, B] | int)
+
+
+class TypeParamsAliasValueTest(unittest.TestCase):
+    def test_alias_value_01(self):
+        type TA1 = int
+
+        self.assertIsInstance(TA1, TypeAliasType)
+        self.assertEqual(TA1.__value__, int)
+        self.assertEqual(TA1.__parameters__, ())
+        self.assertEqual(TA1.__type_params__, ())
+
+        type TA2 = TA1 | str
+
+        self.assertIsInstance(TA2, TypeAliasType)
+        a, b = TA2.__value__.__args__
+        self.assertEqual(a, TA1)
+        self.assertEqual(b, str)
+        self.assertEqual(TA2.__parameters__, ())
+        self.assertEqual(TA2.__type_params__, ())
+
+    def test_alias_value_02(self):
+        class Parent[A]:
+            type TA1[B] = dict[A, B]
+
+        self.assertIsInstance(Parent.TA1, TypeAliasType)
+        self.assertEqual(len(Parent.TA1.__parameters__), 1)
+        self.assertEqual(len(Parent.__parameters__), 1)
+        a, = Parent.__parameters__
+        b, = Parent.TA1.__parameters__
+        self.assertEqual(Parent.__type_params__, (a,))
+        self.assertEqual(Parent.TA1.__type_params__, (b,))
+        self.assertEqual(Parent.TA1.__value__, dict[a, b])
+
+    def test_alias_value_03(self):
+        def outer[A]():
+            type TA1[B] = dict[A, B]
+            return TA1
+
+        o = outer()
+        self.assertIsInstance(o, TypeAliasType)
+        self.assertEqual(len(o.__parameters__), 1)
+        self.assertEqual(len(outer.__type_params__), 1)
+        b = o.__parameters__[0]
+        self.assertEqual(o.__type_params__, (b,))
+
+    def test_alias_value_04(self):
+        def more_generic[T, *Ts, **P]():
+            type TA[T2, *Ts2, **P2] = tuple[Callable[P, tuple[T, *Ts]], Callable[P2, tuple[T2, *Ts2]]]
+            return TA
+
+        alias = more_generic()
+        self.assertIsInstance(alias, TypeAliasType)
+        T2, Ts2, P2 = alias.__type_params__
+        self.assertEqual(alias.__parameters__, (T2, *Ts2, P2))
+        T, Ts, P = more_generic.__type_params__
+        self.assertEqual(alias.__value__, tuple[Callable[P, tuple[T, *Ts]], Callable[P2, tuple[T2, *Ts2]]])
+
+    def test_subscripting(self):
+        type NonGeneric = int
+        type Generic[A] = dict[A, A]
+        type VeryGeneric[T, *Ts, **P] = Callable[P, tuple[T, *Ts]]
+
+        with self.assertRaises(TypeError):
+            NonGeneric[int]
+
+        specialized = Generic[int]
+        self.assertIsInstance(specialized, types.GenericAlias)
+        self.assertIs(specialized.__origin__, Generic)
+        self.assertEqual(specialized.__args__, (int,))
+
+        specialized2 = VeryGeneric[int, str, float, [bool, range]]
+        self.assertIsInstance(specialized2, types.GenericAlias)
+        self.assertIs(specialized2.__origin__, VeryGeneric)
+        self.assertEqual(specialized2.__args__, (int, str, float, [bool, range]))
+
+    def test_repr(self):
+        type Simple = int
+        type VeryGeneric[T, *Ts, **P] = Callable[P, tuple[T, *Ts]]
+
+        self.assertEqual(repr(Simple), "Simple")
+        self.assertEqual(repr(VeryGeneric), "VeryGeneric")
+        self.assertEqual(repr(VeryGeneric[int, bytes, str, [float, object]]),
+                         "VeryGeneric[int, bytes, str, [float, object]]")
+        self.assertEqual(repr(VeryGeneric[int, []]),
+                         "VeryGeneric[int, []]")
+        self.assertEqual(repr(VeryGeneric[int, [VeryGeneric[int], list[str]]]),
+                         "VeryGeneric[int, [VeryGeneric[int], list[str]]]")
+
+    def test_recursive_repr(self):
+        type Recursive = Recursive
+        self.assertEqual(repr(Recursive), "Recursive")
+
+        type X = list[Y]
+        type Y = list[X]
+        self.assertEqual(repr(X), "X")
+        self.assertEqual(repr(Y), "Y")
+
+        type GenericRecursive[X] = list[X | GenericRecursive[X]]
+        self.assertEqual(repr(GenericRecursive), "GenericRecursive")
+        self.assertEqual(repr(GenericRecursive[int]), "GenericRecursive[int]")
+        self.assertEqual(repr(GenericRecursive[GenericRecursive[int]]),
+                         "GenericRecursive[GenericRecursive[int]]")
+
+    def test_raising(self):
+        type MissingName = list[_My_X]
+        with self.assertRaisesRegex(
+            NameError,
+            "cannot access free variable '_My_X' where it is not associated with a value",
+        ):
+            MissingName.__value__
+        _My_X = int
+        self.assertEqual(MissingName.__value__, list[int])
+        del _My_X
+        # Cache should still work:
+        self.assertEqual(MissingName.__value__, list[int])
+
+        # Explicit exception:
+        type ExprException = 1 / 0
+        with self.assertRaises(ZeroDivisionError):
+            ExprException.__value__
+
+
+class TypeAliasConstructorTest(unittest.TestCase):
+    def test_basic(self):
+        TA = TypeAliasType("TA", int)
+        self.assertEqual(TA.__name__, "TA")
+        self.assertIs(TA.__value__, int)
+        self.assertEqual(TA.__type_params__, ())
+        self.assertEqual(TA.__module__, __name__)
+
+    def test_attributes_with_exec(self):
+        ns = {}
+        exec("type TA = int", ns, ns)
+        TA = ns["TA"]
+        self.assertEqual(TA.__name__, "TA")
+        self.assertIs(TA.__value__, int)
+        self.assertEqual(TA.__type_params__, ())
+        self.assertIs(TA.__module__, None)
+
+    def test_generic(self):
+        T = TypeVar("T")
+        TA = TypeAliasType("TA", list[T], type_params=(T,))
+        self.assertEqual(TA.__name__, "TA")
+        self.assertEqual(TA.__value__, list[T])
+        self.assertEqual(TA.__type_params__, (T,))
+        self.assertEqual(TA.__module__, __name__)
+
+    def test_keywords(self):
+        TA = TypeAliasType(name="TA", value=int)
+        self.assertEqual(TA.__name__, "TA")
+        self.assertIs(TA.__value__, int)
+        self.assertEqual(TA.__type_params__, ())
+        self.assertEqual(TA.__module__, __name__)
+
+    def test_errors(self):
+        with self.assertRaises(TypeError):
+            TypeAliasType()
+        with self.assertRaises(TypeError):
+            TypeAliasType("TA")
+        with self.assertRaises(TypeError):
+            TypeAliasType("TA", list, ())
+        with self.assertRaises(TypeError):
+            TypeAliasType("TA", list, type_params=42)
+
+
+class TypeAliasTypeTest(unittest.TestCase):
+    def test_immutable(self):
+        with self.assertRaises(TypeError):
+            TypeAliasType.whatever = "not allowed"
+
+    def test_no_subclassing(self):
+        with self.assertRaisesRegex(TypeError, "not an acceptable base type"):
+            class MyAlias(TypeAliasType):
+                pass
+
+    def test_union(self):
+        type Alias1 = int
+        type Alias2 = str
+        union = Alias1 | Alias2
+        self.assertIsInstance(union, types.UnionType)
+        self.assertEqual(get_args(union), (Alias1, Alias2))
+        union2 = Alias1 | list[float]
+        self.assertIsInstance(union2, types.UnionType)
+        self.assertEqual(get_args(union2), (Alias1, list[float]))
+        union3 = list[range] | Alias1
+        self.assertIsInstance(union3, types.UnionType)
+        self.assertEqual(get_args(union3), (list[range], Alias1))
+
+    def test_module(self):
+        self.assertEqual(TypeAliasType.__module__, "typing")
+        type Alias = int
+        self.assertEqual(Alias.__module__, __name__)
+        self.assertEqual(mod_generics_cache.Alias.__module__,
+                         mod_generics_cache.__name__)
+        self.assertEqual(mod_generics_cache.OldStyle.__module__,
+                         mod_generics_cache.__name__)
+
+
+# All these type aliases are used for pickling tests:
+T = TypeVar('T')
+type SimpleAlias = int
+type RecursiveAlias = dict[str, RecursiveAlias]
+type GenericAlias[X] = list[X]
+type GenericAliasMultipleTypes[X, Y] = dict[X, Y]
+type RecursiveGenericAlias[X] = dict[str, RecursiveAlias[X]]
+type BoundGenericAlias[X: int] = set[X]
+type ConstrainedGenericAlias[LongName: (str, bytes)] = list[LongName]
+type AllTypesAlias[A, *B, **C] = Callable[C, A] | tuple[*B]
+
+
+class TypeAliasPickleTest(unittest.TestCase):
+    def test_pickling(self):
+        things_to_test = [
+            SimpleAlias,
+            RecursiveAlias,
+
+            GenericAlias,
+            GenericAlias[T],
+            GenericAlias[int],
+
+            GenericAliasMultipleTypes,
+            GenericAliasMultipleTypes[str, T],
+            GenericAliasMultipleTypes[T, str],
+            GenericAliasMultipleTypes[int, str],
+
+            RecursiveGenericAlias,
+            RecursiveGenericAlias[T],
+            RecursiveGenericAlias[int],
+
+            BoundGenericAlias,
+            BoundGenericAlias[int],
+            BoundGenericAlias[T],
+
+            ConstrainedGenericAlias,
+            ConstrainedGenericAlias[str],
+            ConstrainedGenericAlias[T],
+
+            AllTypesAlias,
+            AllTypesAlias[int, str, T, [T, object]],
+
+            # Other modules:
+            mod_generics_cache.Alias,
+            mod_generics_cache.OldStyle,
+        ]
+        for thing in things_to_test:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(thing=thing, proto=proto):
+                    pickled = pickle.dumps(thing, protocol=proto)
+                    self.assertEqual(pickle.loads(pickled), thing)
+
+    type ClassLevel = str
+
+    def test_pickling_local(self):
+        type A = int
+        things_to_test = [
+            self.ClassLevel,
+            A,
+        ]
+        for thing in things_to_test:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(thing=thing, proto=proto):
+                    with self.assertRaises(pickle.PickleError):
+                        pickle.dumps(thing, protocol=proto)
diff --git a/Lib/test/test_type_annotations.py b/Lib/test/test_type_annotations.py
index 87f46c2ce8ce61..3dbb35afcb620f 100644
--- a/Lib/test/test_type_annotations.py
+++ b/Lib/test/test_type_annotations.py
@@ -1,4 +1,6 @@
+import textwrap
 import unittest
+from test.support import run_code
 
 class TypeAnnotationTests(unittest.TestCase):
 
@@ -101,3 +103,112 @@ class D(metaclass=C):
         with self.assertRaises(AttributeError):
             del D.__annotations__
         self.assertEqual(D.__annotations__, {})
+
+
+class TestSetupAnnotations(unittest.TestCase):
+    def check(self, code: str):
+        code = textwrap.dedent(code)
+        for scope in ("module", "class"):
+            with self.subTest(scope=scope):
+                if scope == "class":
+                    code = f"class C:\n{textwrap.indent(code, '    ')}"
+                ns = run_code(code)
+                if scope == "class":
+                    annotations = ns["C"].__annotations__
+                else:
+                    annotations = ns["__annotations__"]
+                self.assertEqual(annotations, {"x": int})
+
+    def test_top_level(self):
+        self.check("x: int = 1")
+
+    def test_blocks(self):
+        self.check("if True:\n    x: int = 1")
+        self.check("""
+            while True:
+                x: int = 1
+                break
+        """)
+        self.check("""
+            while False:
+                pass
+            else:
+                x: int = 1
+        """)
+        self.check("""
+            for i in range(1):
+                x: int = 1
+        """)
+        self.check("""
+            for i in range(1):
+                pass
+            else:
+                x: int = 1
+        """)
+
+    def test_try(self):
+        self.check("""
+            try:
+                x: int = 1
+            except:
+                pass
+        """)
+        self.check("""
+            try:
+                pass
+            except:
+                pass
+            else:
+                x: int = 1
+        """)
+        self.check("""
+            try:
+                pass
+            except:
+                pass
+            finally:
+                x: int = 1
+        """)
+        self.check("""
+            try:
+                1/0
+            except:
+                x: int = 1
+        """)
+
+    def test_try_star(self):
+        self.check("""
+            try:
+                x: int = 1
+            except* Exception:
+                pass
+        """)
+        self.check("""
+            try:
+                pass
+            except* Exception:
+                pass
+            else:
+                x: int = 1
+        """)
+        self.check("""
+            try:
+                pass
+            except* Exception:
+                pass
+            finally:
+                x: int = 1
+        """)
+        self.check("""
+            try:
+                1/0
+            except* Exception:
+                x: int = 1
+        """)
+
+    def test_match(self):
+        self.check("""
+            match 0:
+                case 0:
+                    x: int = 1
+        """)
diff --git a/Lib/test/test_type_cache.py b/Lib/test/test_type_cache.py
index 24f83cd3e172c7..72587ecc11b6f3 100644
--- a/Lib/test/test_type_cache.py
+++ b/Lib/test/test_type_cache.py
@@ -58,4 +58,4 @@ class C:
 
 
 if __name__ == "__main__":
-    support.run_unittest(TypeCacheTests)
+    unittest.main()
diff --git a/Lib/test/test_type_comments.py b/Lib/test/test_type_comments.py
index aba4a44be9da96..5a911da56f8f8a 100644
--- a/Lib/test/test_type_comments.py
+++ b/Lib/test/test_type_comments.py
@@ -66,6 +66,14 @@ def foo():
     pass
 """
 
+parenthesized_withstmt = """\
+with (a as b):  # type: int
+    pass
+
+with (a, b):  # type: int
+    pass
+"""
+
 vardecl = """\
 a = 0  # type: int
 """
@@ -260,8 +268,8 @@ def test_asyncdef(self):
         self.assertEqual(tree.body[1].type_comment, None)
 
     def test_asyncvar(self):
-        for tree in self.parse_all(asyncvar, maxver=6):
-            pass
+        with self.assertRaises(SyntaxError):
+            self.classic_parse(asyncvar)
 
     def test_asynccomp(self):
         for tree in self.parse_all(asynccomp, minver=6):
@@ -300,6 +308,14 @@ def test_withstmt(self):
         tree = self.classic_parse(withstmt)
         self.assertEqual(tree.body[0].type_comment, None)
 
+    def test_parenthesized_withstmt(self):
+        for tree in self.parse_all(parenthesized_withstmt, minver=9):
+            self.assertEqual(tree.body[0].type_comment, "int")
+            self.assertEqual(tree.body[1].type_comment, "int")
+        tree = self.classic_parse(parenthesized_withstmt)
+        self.assertEqual(tree.body[0].type_comment, None)
+        self.assertEqual(tree.body[1].type_comment, None)
+
     def test_vardecl(self):
         for tree in self.parse_all(vardecl):
             self.assertEqual(tree.body[0].type_comment, "int")
diff --git a/Lib/test/test_type_params.py b/Lib/test/test_type_params.py
new file mode 100644
index 00000000000000..25ee188731f31f
--- /dev/null
+++ b/Lib/test/test_type_params.py
@@ -0,0 +1,1104 @@
+import asyncio
+import textwrap
+import types
+import unittest
+import pickle
+import weakref
+from test.support import requires_working_socket, check_syntax_error, run_code
+
+from typing import Generic, Sequence, TypeVar, TypeVarTuple, ParamSpec, get_args
+
+
+class TypeParamsInvalidTest(unittest.TestCase):
+    def test_name_collisions(self):
+        check_syntax_error(self, 'def func[**A, A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'def func[A, *A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'def func[*A, **A](): ...', "duplicate type parameter 'A'")
+
+        check_syntax_error(self, 'class C[**A, A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'class C[A, *A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'class C[*A, **A](): ...', "duplicate type parameter 'A'")
+
+    def test_name_non_collision_02(self):
+        ns = run_code("""def func[A](A): return A""")
+        func = ns["func"]
+        self.assertEqual(func(1), 1)
+        A, = func.__type_params__
+        self.assertEqual(A.__name__, "A")
+
+    def test_name_non_collision_03(self):
+        ns = run_code("""def func[A](*A): return A""")
+        func = ns["func"]
+        self.assertEqual(func(1), (1,))
+        A, = func.__type_params__
+        self.assertEqual(A.__name__, "A")
+
+    def test_name_non_collision_04(self):
+        # Mangled names should not cause a conflict.
+        ns = run_code("""
+            class ClassA:
+                def func[__A](self, __A): return __A
+            """
+        )
+        cls = ns["ClassA"]
+        self.assertEqual(cls().func(1), 1)
+        A, = cls.func.__type_params__
+        self.assertEqual(A.__name__, "__A")
+
+    def test_name_non_collision_05(self):
+        ns = run_code("""
+            class ClassA:
+                def func[_ClassA__A](self, __A): return __A
+            """
+        )
+        cls = ns["ClassA"]
+        self.assertEqual(cls().func(1), 1)
+        A, = cls.func.__type_params__
+        self.assertEqual(A.__name__, "_ClassA__A")
+
+    def test_name_non_collision_06(self):
+        ns = run_code("""
+            class ClassA[X]:
+                def func(self, X): return X
+            """
+        )
+        cls = ns["ClassA"]
+        self.assertEqual(cls().func(1), 1)
+        X, = cls.__type_params__
+        self.assertEqual(X.__name__, "X")
+
+    def test_name_non_collision_07(self):
+        ns = run_code("""
+            class ClassA[X]:
+                def func(self):
+                    X = 1
+                    return X
+            """
+        )
+        cls = ns["ClassA"]
+        self.assertEqual(cls().func(), 1)
+        X, = cls.__type_params__
+        self.assertEqual(X.__name__, "X")
+
+    def test_name_non_collision_08(self):
+        ns = run_code("""
+            class ClassA[X]:
+                def func(self):
+                    return [X for X in [1, 2]]
+            """
+        )
+        cls = ns["ClassA"]
+        self.assertEqual(cls().func(), [1, 2])
+        X, = cls.__type_params__
+        self.assertEqual(X.__name__, "X")
+
+    def test_name_non_collision_9(self):
+        ns = run_code("""
+            class ClassA[X]:
+                def func[X](self):
+                    ...
+            """
+        )
+        cls = ns["ClassA"]
+        outer_X, = cls.__type_params__
+        inner_X, = cls.func.__type_params__
+        self.assertEqual(outer_X.__name__, "X")
+        self.assertEqual(inner_X.__name__, "X")
+        self.assertIsNot(outer_X, inner_X)
+
+    def test_name_non_collision_10(self):
+        ns = run_code("""
+            class ClassA[X]:
+                X: int
+            """
+        )
+        cls = ns["ClassA"]
+        X, = cls.__type_params__
+        self.assertEqual(X.__name__, "X")
+        self.assertIs(cls.__annotations__["X"], int)
+
+    def test_name_non_collision_13(self):
+        ns = run_code("""
+            X = 1
+            def outer():
+                def inner[X]():
+                    global X
+                    X = 2
+                return inner
+            """
+        )
+        self.assertEqual(ns["X"], 1)
+        outer = ns["outer"]
+        outer()()
+        self.assertEqual(ns["X"], 2)
+
+    def test_disallowed_expressions(self):
+        check_syntax_error(self, "type X = (yield)")
+        check_syntax_error(self, "type X = (yield from x)")
+        check_syntax_error(self, "type X = (await 42)")
+        check_syntax_error(self, "async def f(): type X = (yield)")
+        check_syntax_error(self, "type X = (y := 3)")
+        check_syntax_error(self, "class X[T: (yield)]: pass")
+        check_syntax_error(self, "class X[T: (yield from x)]: pass")
+        check_syntax_error(self, "class X[T: (await 42)]: pass")
+        check_syntax_error(self, "class X[T: (y := 3)]: pass")
+        check_syntax_error(self, "class X[T](y := Sequence[T]): pass")
+        check_syntax_error(self, "def f[T](y: (x := Sequence[T])): pass")
+        check_syntax_error(self, "class X[T]([(x := 3) for _ in range(2)] and B): pass")
+        check_syntax_error(self, "def f[T: [(x := 3) for _ in range(2)]](): pass")
+        check_syntax_error(self, "type T = [(x := 3) for _ in range(2)]")
+
+    def test_incorrect_mro_explicit_object(self):
+        with self.assertRaisesRegex(TypeError, r"\(MRO\) for bases object, Generic"):
+            class My[X](object): ...
+
+
+class TypeParamsNonlocalTest(unittest.TestCase):
+    def test_nonlocal_disallowed_01(self):
+        code = """
+            def outer():
+                X = 1
+                def inner[X]():
+                    nonlocal X
+                return X
+            """
+        check_syntax_error(self, code)
+
+    def test_nonlocal_disallowed_02(self):
+        code = """
+            def outer2[T]():
+                def inner1():
+                    nonlocal T
+        """
+        check_syntax_error(self, textwrap.dedent(code))
+
+    def test_nonlocal_disallowed_03(self):
+        code = """
+            class Cls[T]:
+                nonlocal T
+        """
+        check_syntax_error(self, textwrap.dedent(code))
+
+    def test_nonlocal_allowed(self):
+        code = """
+            def func[T]():
+                T = "func"
+                def inner():
+                    nonlocal T
+                    T = "inner"
+                inner()
+                assert T == "inner"
+        """
+        ns = run_code(code)
+        func = ns["func"]
+        T, = func.__type_params__
+        self.assertEqual(T.__name__, "T")
+
+
+class TypeParamsAccessTest(unittest.TestCase):
+    def test_class_access_01(self):
+        ns = run_code("""
+            class ClassA[A, B](dict[A, B]):
+                ...
+            """
+        )
+        cls = ns["ClassA"]
+        A, B = cls.__type_params__
+        self.assertEqual(types.get_original_bases(cls), (dict[A, B], Generic[A, B]))
+
+    def test_class_access_02(self):
+        ns = run_code("""
+            class MyMeta[A, B](type): ...
+            class ClassA[A, B](metaclass=MyMeta[A, B]):
+                ...
+            """
+        )
+        meta = ns["MyMeta"]
+        cls = ns["ClassA"]
+        A1, B1 = meta.__type_params__
+        A2, B2 = cls.__type_params__
+        self.assertIsNot(A1, A2)
+        self.assertIsNot(B1, B2)
+        self.assertIs(type(cls), meta)
+
+    def test_class_access_03(self):
+        code = """
+            def my_decorator(a):
+                ...
+            @my_decorator(A)
+            class ClassA[A, B]():
+                ...
+            """
+
+        with self.assertRaisesRegex(NameError, "name 'A' is not defined"):
+            run_code(code)
+
+    def test_function_access_01(self):
+        ns = run_code("""
+            def func[A, B](a: dict[A, B]):
+                ...
+            """
+        )
+        func = ns["func"]
+        A, B = func.__type_params__
+        self.assertEqual(func.__annotations__["a"], dict[A, B])
+
+    def test_function_access_02(self):
+        code = """
+            def func[A](a = list[A]()):
+                ...
+            """
+
+        with self.assertRaisesRegex(NameError, "name 'A' is not defined"):
+            run_code(code)
+
+    def test_function_access_03(self):
+        code = """
+            def my_decorator(a):
+                ...
+            @my_decorator(A)
+            def func[A]():
+                ...
+            """
+
+        with self.assertRaisesRegex(NameError, "name 'A' is not defined"):
+            run_code(code)
+
+    def test_method_access_01(self):
+        ns = run_code("""
+            class ClassA:
+                x = int
+                def func[T](self, a: x, b: T):
+                    ...
+            """
+        )
+        cls = ns["ClassA"]
+        self.assertIs(cls.func.__annotations__["a"], int)
+        T, = cls.func.__type_params__
+        self.assertIs(cls.func.__annotations__["b"], T)
+
+    def test_nested_access_01(self):
+        ns = run_code("""
+            class ClassA[A]:
+                def funcB[B](self):
+                    class ClassC[C]:
+                        def funcD[D](self):
+                            return lambda: (A, B, C, D)
+                    return ClassC
+            """
+        )
+        cls = ns["ClassA"]
+        A, = cls.__type_params__
+        B, = cls.funcB.__type_params__
+        classC = cls().funcB()
+        C, = classC.__type_params__
+        D, = classC.funcD.__type_params__
+        self.assertEqual(classC().funcD()(), (A, B, C, D))
+
+    def test_out_of_scope_01(self):
+        code = """
+            class ClassA[T]: ...
+            x = T
+            """
+
+        with self.assertRaisesRegex(NameError, "name 'T' is not defined"):
+            run_code(code)
+
+    def test_out_of_scope_02(self):
+        code = """
+            class ClassA[A]:
+                def funcB[B](self): ...
+
+                x = B
+            """
+
+        with self.assertRaisesRegex(NameError, "name 'B' is not defined"):
+            run_code(code)
+
+    def test_class_scope_interaction_01(self):
+        ns = run_code("""
+            class C:
+                x = 1
+                def method[T](self, arg: x): pass
+        """)
+        cls = ns["C"]
+        self.assertEqual(cls.method.__annotations__["arg"], 1)
+
+    def test_class_scope_interaction_02(self):
+        ns = run_code("""
+            class C:
+                class Base: pass
+                class Child[T](Base): pass
+        """)
+        cls = ns["C"]
+        self.assertEqual(cls.Child.__bases__, (cls.Base, Generic))
+        T, = cls.Child.__type_params__
+        self.assertEqual(types.get_original_bases(cls.Child), (cls.Base, Generic[T]))
+
+    def test_class_deref(self):
+        ns = run_code("""
+            class C[T]:
+                T = "class"
+                type Alias = T
+        """)
+        cls = ns["C"]
+        self.assertEqual(cls.Alias.__value__, "class")
+
+    def test_shadowing_nonlocal(self):
+        ns = run_code("""
+            def outer[T]():
+                T = "outer"
+                def inner():
+                    nonlocal T
+                    T = "inner"
+                    return T
+                return lambda: T, inner
+        """)
+        outer = ns["outer"]
+        T, = outer.__type_params__
+        self.assertEqual(T.__name__, "T")
+        getter, inner = outer()
+        self.assertEqual(getter(), "outer")
+        self.assertEqual(inner(), "inner")
+        self.assertEqual(getter(), "inner")
+
+    def test_reference_previous_typevar(self):
+        def func[S, T: Sequence[S]]():
+            pass
+
+        S, T = func.__type_params__
+        self.assertEqual(T.__bound__, Sequence[S])
+
+    def test_super(self):
+        class Base:
+            def meth(self):
+                return "base"
+
+        class Child(Base):
+            # Having int in the annotation ensures the class gets cells for both
+            # __class__ and __classdict__
+            def meth[T](self, arg: int) -> T:
+                return super().meth() + "child"
+
+        c = Child()
+        self.assertEqual(c.meth(1), "basechild")
+
+    def test_type_alias_containing_lambda(self):
+        type Alias[T] = lambda: T
+        T, = Alias.__type_params__
+        self.assertIs(Alias.__value__(), T)
+
+    def test_class_base_containing_lambda(self):
+        # Test that scopes nested inside hidden functions work correctly
+        outer_var = "outer"
+        class Base[T]: ...
+        class Child[T](Base[lambda: (int, outer_var, T)]): ...
+        base, _ = types.get_original_bases(Child)
+        func, = get_args(base)
+        T, = Child.__type_params__
+        self.assertEqual(func(), (int, "outer", T))
+
+    def test_comprehension_01(self):
+        type Alias[T: ([T for T in (T, [1])[1]], T)] = [T for T in T.__name__]
+        self.assertEqual(Alias.__value__, ["T"])
+        T, = Alias.__type_params__
+        self.assertEqual(T.__constraints__, ([1], T))
+
+    def test_comprehension_02(self):
+        type Alias[T: [lambda: T for T in (T, [1])[1]]] = [lambda: T for T in T.__name__]
+        func, = Alias.__value__
+        self.assertEqual(func(), "T")
+        T, = Alias.__type_params__
+        func, = T.__bound__
+        self.assertEqual(func(), 1)
+
+    def test_gen_exp_in_nested_class(self):
+        code = """
+            from test.test_type_params import make_base
+
+            class C[T]:
+                T = "class"
+                class Inner(make_base(T for _ in (1,)), make_base(T)):
+                    pass
+        """
+        C = run_code(code)["C"]
+        T, = C.__type_params__
+        base1, base2 = C.Inner.__bases__
+        self.assertEqual(list(base1.__arg__), [T])
+        self.assertEqual(base2.__arg__, "class")
+
+    def test_gen_exp_in_nested_generic_class(self):
+        code = """
+            from test.test_type_params import make_base
+
+            class C[T]:
+                T = "class"
+                class Inner[U](make_base(T for _ in (1,)), make_base(T)):
+                    pass
+        """
+        with self.assertRaisesRegex(SyntaxError,
+                                    "Cannot use comprehension in annotation scope within class scope"):
+            run_code(code)
+
+    def test_listcomp_in_nested_class(self):
+        code = """
+            from test.test_type_params import make_base
+
+            class C[T]:
+                T = "class"
+                class Inner(make_base([T for _ in (1,)]), make_base(T)):
+                    pass
+        """
+        C = run_code(code)["C"]
+        T, = C.__type_params__
+        base1, base2 = C.Inner.__bases__
+        self.assertEqual(base1.__arg__, [T])
+        self.assertEqual(base2.__arg__, "class")
+
+    def test_listcomp_in_nested_generic_class(self):
+        code = """
+            from test.test_type_params import make_base
+
+            class C[T]:
+                T = "class"
+                class Inner[U](make_base([T for _ in (1,)]), make_base(T)):
+                    pass
+        """
+        with self.assertRaisesRegex(SyntaxError,
+                                    "Cannot use comprehension in annotation scope within class scope"):
+            run_code(code)
+
+    def test_gen_exp_in_generic_method(self):
+        code = """
+            class C[T]:
+                T = "class"
+                def meth[U](x: (T for _ in (1,)), y: T):
+                    pass
+        """
+        with self.assertRaisesRegex(SyntaxError,
+                                    "Cannot use comprehension in annotation scope within class scope"):
+            run_code(code)
+
+    def test_nested_scope_in_generic_alias(self):
+        code = """
+            class C[T]:
+                T = "class"
+                {}
+        """
+        error_cases = [
+            "type Alias1[T] = lambda: T",
+            "type Alias2 = lambda: T",
+            "type Alias3[T] = (T for _ in (1,))",
+            "type Alias4 = (T for _ in (1,))",
+            "type Alias5[T] = [T for _ in (1,)]",
+            "type Alias6 = [T for _ in (1,)]",
+        ]
+        for case in error_cases:
+            with self.subTest(case=case):
+                with self.assertRaisesRegex(SyntaxError,
+                                            r"Cannot use [a-z]+ in annotation scope within class scope"):
+                    run_code(code.format(case))
+
+
+def make_base(arg):
+    class Base:
+        __arg__ = arg
+    return Base
+
+
+def global_generic_func[T]():
+    pass
+
+class GlobalGenericClass[T]:
+    pass
+
+
+class TypeParamsLazyEvaluationTest(unittest.TestCase):
+    def test_qualname(self):
+        class Foo[T]:
+            pass
+
+        def func[T]():
+            pass
+
+        self.assertEqual(Foo.__qualname__, "TypeParamsLazyEvaluationTest.test_qualname.<locals>.Foo")
+        self.assertEqual(func.__qualname__, "TypeParamsLazyEvaluationTest.test_qualname.<locals>.func")
+        self.assertEqual(global_generic_func.__qualname__, "global_generic_func")
+        self.assertEqual(GlobalGenericClass.__qualname__, "GlobalGenericClass")
+
+    def test_recursive_class(self):
+        class Foo[T: Foo, U: (Foo, Foo)]:
+            pass
+
+        type_params = Foo.__type_params__
+        self.assertEqual(len(type_params), 2)
+        self.assertEqual(type_params[0].__name__, "T")
+        self.assertIs(type_params[0].__bound__, Foo)
+        self.assertEqual(type_params[0].__constraints__, ())
+
+        self.assertEqual(type_params[1].__name__, "U")
+        self.assertIs(type_params[1].__bound__, None)
+        self.assertEqual(type_params[1].__constraints__, (Foo, Foo))
+
+    def test_evaluation_error(self):
+        class Foo[T: Undefined, U: (Undefined,)]:
+            pass
+
+        type_params = Foo.__type_params__
+        with self.assertRaises(NameError):
+            type_params[0].__bound__
+        self.assertEqual(type_params[0].__constraints__, ())
+        self.assertIs(type_params[1].__bound__, None)
+        with self.assertRaises(NameError):
+            type_params[1].__constraints__
+
+        Undefined = "defined"
+        self.assertEqual(type_params[0].__bound__, "defined")
+        self.assertEqual(type_params[0].__constraints__, ())
+
+        self.assertIs(type_params[1].__bound__, None)
+        self.assertEqual(type_params[1].__constraints__, ("defined",))
+
+
+class TypeParamsClassScopeTest(unittest.TestCase):
+    def test_alias(self):
+        class X:
+            T = int
+            type U = T
+        self.assertIs(X.U.__value__, int)
+
+        ns = run_code("""
+            glb = "global"
+            class X:
+                cls = "class"
+                type U = (glb, cls)
+        """)
+        cls = ns["X"]
+        self.assertEqual(cls.U.__value__, ("global", "class"))
+
+    def test_bound(self):
+        class X:
+            T = int
+            def foo[U: T](self): ...
+        self.assertIs(X.foo.__type_params__[0].__bound__, int)
+
+        ns = run_code("""
+            glb = "global"
+            class X:
+                cls = "class"
+                def foo[T: glb, U: cls](self): ...
+        """)
+        cls = ns["X"]
+        T, U = cls.foo.__type_params__
+        self.assertEqual(T.__bound__, "global")
+        self.assertEqual(U.__bound__, "class")
+
+    def test_modified_later(self):
+        class X:
+            T = int
+            def foo[U: T](self): ...
+            type Alias = T
+        X.T = float
+        self.assertIs(X.foo.__type_params__[0].__bound__, float)
+        self.assertIs(X.Alias.__value__, float)
+
+    def test_binding_uses_global(self):
+        ns = run_code("""
+            x = "global"
+            def outer():
+                x = "nonlocal"
+                class Cls:
+                    type Alias = x
+                    val = Alias.__value__
+                    def meth[T: x](self, arg: x): ...
+                    bound = meth.__type_params__[0].__bound__
+                    annotation = meth.__annotations__["arg"]
+                    x = "class"
+                return Cls
+        """)
+        cls = ns["outer"]()
+        self.assertEqual(cls.val, "global")
+        self.assertEqual(cls.bound, "global")
+        self.assertEqual(cls.annotation, "global")
+
+    def test_no_binding_uses_nonlocal(self):
+        ns = run_code("""
+            x = "global"
+            def outer():
+                x = "nonlocal"
+                class Cls:
+                    type Alias = x
+                    val = Alias.__value__
+                    def meth[T: x](self, arg: x): ...
+                    bound = meth.__type_params__[0].__bound__
+                return Cls
+        """)
+        cls = ns["outer"]()
+        self.assertEqual(cls.val, "nonlocal")
+        self.assertEqual(cls.bound, "nonlocal")
+        self.assertEqual(cls.meth.__annotations__["arg"], "nonlocal")
+
+    def test_explicit_global(self):
+        ns = run_code("""
+            x = "global"
+            def outer():
+                x = "nonlocal"
+                class Cls:
+                    global x
+                    type Alias = x
+                Cls.x = "class"
+                return Cls
+        """)
+        cls = ns["outer"]()
+        self.assertEqual(cls.Alias.__value__, "global")
+
+    def test_explicit_global_with_no_static_bound(self):
+        ns = run_code("""
+            def outer():
+                class Cls:
+                    global x
+                    type Alias = x
+                Cls.x = "class"
+                return Cls
+        """)
+        ns["x"] = "global"
+        cls = ns["outer"]()
+        self.assertEqual(cls.Alias.__value__, "global")
+
+    def test_explicit_global_with_assignment(self):
+        ns = run_code("""
+            x = "global"
+            def outer():
+                x = "nonlocal"
+                class Cls:
+                    global x
+                    type Alias = x
+                    x = "global from class"
+                Cls.x = "class"
+                return Cls
+        """)
+        cls = ns["outer"]()
+        self.assertEqual(cls.Alias.__value__, "global from class")
+
+    def test_explicit_nonlocal(self):
+        ns = run_code("""
+            x = "global"
+            def outer():
+                x = "nonlocal"
+                class Cls:
+                    nonlocal x
+                    type Alias = x
+                    x = "class"
+                return Cls
+        """)
+        cls = ns["outer"]()
+        self.assertEqual(cls.Alias.__value__, "class")
+
+    def test_nested_free(self):
+        ns = run_code("""
+            def f():
+                T = str
+                class C:
+                    T = int
+                    class D[U](T):
+                        x = T
+                return C
+        """)
+        C = ns["f"]()
+        self.assertIn(int, C.D.__bases__)
+        self.assertIs(C.D.x, str)
+
+class TypeParamsManglingTest(unittest.TestCase):
+    def test_mangling(self):
+        class Foo[__T]:
+            param = __T
+            def meth[__U](self, arg: __T, arg2: __U):
+                return (__T, __U)
+            type Alias[__V] = (__T, __V)
+
+        T = Foo.__type_params__[0]
+        self.assertEqual(T.__name__, "__T")
+        U = Foo.meth.__type_params__[0]
+        self.assertEqual(U.__name__, "__U")
+        V = Foo.Alias.__type_params__[0]
+        self.assertEqual(V.__name__, "__V")
+
+        anno = Foo.meth.__annotations__
+        self.assertIs(anno["arg"], T)
+        self.assertIs(anno["arg2"], U)
+        self.assertEqual(Foo().meth(1, 2), (T, U))
+
+        self.assertEqual(Foo.Alias.__value__, (T, V))
+
+
+class TypeParamsComplexCallsTest(unittest.TestCase):
+    def test_defaults(self):
+        # Generic functions with both defaults and kwdefaults trigger a specific code path
+        # in the compiler.
+        def func[T](a: T = "a", *, b: T = "b"):
+            return (a, b)
+
+        T, = func.__type_params__
+        self.assertIs(func.__annotations__["a"], T)
+        self.assertIs(func.__annotations__["b"], T)
+        self.assertEqual(func(), ("a", "b"))
+        self.assertEqual(func(1), (1, "b"))
+        self.assertEqual(func(b=2), ("a", 2))
+
+    def test_complex_base(self):
+        class Base:
+            def __init_subclass__(cls, **kwargs) -> None:
+                cls.kwargs = kwargs
+
+        kwargs = {"c": 3}
+        # Base classes with **kwargs trigger a different code path in the compiler.
+        class C[T](Base, a=1, b=2, **kwargs):
+            pass
+
+        T, = C.__type_params__
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(C.kwargs, {"a": 1, "b": 2, "c": 3})
+
+        bases = (Base,)
+        class C2[T](*bases, **kwargs):
+            pass
+
+        T, = C2.__type_params__
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(C2.kwargs, {"c": 3})
+
+
+class TypeParamsTraditionalTypeVarsTest(unittest.TestCase):
+    def test_traditional_01(self):
+        code = """
+            from typing import Generic
+            class ClassA[T](Generic[T]): ...
+        """
+
+        with self.assertRaisesRegex(TypeError, r"Cannot inherit from Generic\[...\] multiple times."):
+            run_code(code)
+
+    def test_traditional_02(self):
+        from typing import TypeVar
+        S = TypeVar("S")
+        with self.assertRaises(TypeError):
+            class ClassA[T](dict[T, S]): ...
+
+    def test_traditional_03(self):
+        # This does not generate a runtime error, but it should be
+        # flagged as an error by type checkers.
+        from typing import TypeVar
+        S = TypeVar("S")
+        def func[T](a: T, b: S) -> T | S:
+            return a
+
+
+class TypeParamsTypeVarTest(unittest.TestCase):
+    def test_typevar_01(self):
+        def func1[A: str, B: str | int, C: (int, str)]():
+            return (A, B, C)
+
+        a, b, c = func1()
+
+        self.assertIsInstance(a, TypeVar)
+        self.assertEqual(a.__bound__, str)
+        self.assertTrue(a.__infer_variance__)
+        self.assertFalse(a.__covariant__)
+        self.assertFalse(a.__contravariant__)
+
+        self.assertIsInstance(b, TypeVar)
+        self.assertEqual(b.__bound__, str | int)
+        self.assertTrue(b.__infer_variance__)
+        self.assertFalse(b.__covariant__)
+        self.assertFalse(b.__contravariant__)
+
+        self.assertIsInstance(c, TypeVar)
+        self.assertEqual(c.__bound__, None)
+        self.assertEqual(c.__constraints__, (int, str))
+        self.assertTrue(c.__infer_variance__)
+        self.assertFalse(c.__covariant__)
+        self.assertFalse(c.__contravariant__)
+
+    def test_typevar_generator(self):
+        def get_generator[A]():
+            def generator1[C]():
+                yield C
+
+            def generator2[B]():
+                yield A
+                yield B
+                yield from generator1()
+            return generator2
+
+        gen = get_generator()
+
+        a, b, c = [x for x in gen()]
+
+        self.assertIsInstance(a, TypeVar)
+        self.assertEqual(a.__name__, "A")
+        self.assertIsInstance(b, TypeVar)
+        self.assertEqual(b.__name__, "B")
+        self.assertIsInstance(c, TypeVar)
+        self.assertEqual(c.__name__, "C")
+
+    @requires_working_socket()
+    def test_typevar_coroutine(self):
+        def get_coroutine[A]():
+            async def coroutine[B]():
+                return (A, B)
+            return coroutine
+
+        co = get_coroutine()
+
+        self.addCleanup(asyncio.set_event_loop_policy, None)
+        a, b = asyncio.run(co())
+
+        self.assertIsInstance(a, TypeVar)
+        self.assertEqual(a.__name__, "A")
+        self.assertIsInstance(b, TypeVar)
+        self.assertEqual(b.__name__, "B")
+
+
+class TypeParamsTypeVarTupleTest(unittest.TestCase):
+    def test_typevartuple_01(self):
+        code = """def func1[*A: str](): pass"""
+        check_syntax_error(self, code, "cannot use bound with TypeVarTuple")
+        code = """def func1[*A: (int, str)](): pass"""
+        check_syntax_error(self, code, "cannot use constraints with TypeVarTuple")
+        code = """class X[*A: str]: pass"""
+        check_syntax_error(self, code, "cannot use bound with TypeVarTuple")
+        code = """class X[*A: (int, str)]: pass"""
+        check_syntax_error(self, code, "cannot use constraints with TypeVarTuple")
+        code = """type X[*A: str] = int"""
+        check_syntax_error(self, code, "cannot use bound with TypeVarTuple")
+        code = """type X[*A: (int, str)] = int"""
+        check_syntax_error(self, code, "cannot use constraints with TypeVarTuple")
+
+    def test_typevartuple_02(self):
+        def func1[*A]():
+            return A
+
+        a = func1()
+        self.assertIsInstance(a, TypeVarTuple)
+
+
+class TypeParamsTypeVarParamSpecTest(unittest.TestCase):
+    def test_paramspec_01(self):
+        code = """def func1[**A: str](): pass"""
+        check_syntax_error(self, code, "cannot use bound with ParamSpec")
+        code = """def func1[**A: (int, str)](): pass"""
+        check_syntax_error(self, code, "cannot use constraints with ParamSpec")
+        code = """class X[**A: str]: pass"""
+        check_syntax_error(self, code, "cannot use bound with ParamSpec")
+        code = """class X[**A: (int, str)]: pass"""
+        check_syntax_error(self, code, "cannot use constraints with ParamSpec")
+        code = """type X[**A: str] = int"""
+        check_syntax_error(self, code, "cannot use bound with ParamSpec")
+        code = """type X[**A: (int, str)] = int"""
+        check_syntax_error(self, code, "cannot use constraints with ParamSpec")
+
+    def test_paramspec_02(self):
+        def func1[**A]():
+            return A
+
+        a = func1()
+        self.assertIsInstance(a, ParamSpec)
+        self.assertTrue(a.__infer_variance__)
+        self.assertFalse(a.__covariant__)
+        self.assertFalse(a.__contravariant__)
+
+
+class TypeParamsTypeParamsDunder(unittest.TestCase):
+    def test_typeparams_dunder_class_01(self):
+        class Outer[A, B]:
+            class Inner[C, D]:
+                @staticmethod
+                def get_typeparams():
+                    return A, B, C, D
+
+        a, b, c, d = Outer.Inner.get_typeparams()
+        self.assertEqual(Outer.__type_params__, (a, b))
+        self.assertEqual(Outer.Inner.__type_params__, (c, d))
+
+        self.assertEqual(Outer.__parameters__, (a, b))
+        self.assertEqual(Outer.Inner.__parameters__, (c, d))
+
+    def test_typeparams_dunder_class_02(self):
+        class ClassA:
+            pass
+
+        self.assertEqual(ClassA.__type_params__, ())
+
+    def test_typeparams_dunder_class_03(self):
+        code = """
+            class ClassA[A]():
+                pass
+            ClassA.__type_params__ = ()
+            params = ClassA.__type_params__
+        """
+
+        ns = run_code(code)
+        self.assertEqual(ns["params"], ())
+
+    def test_typeparams_dunder_function_01(self):
+        def outer[A, B]():
+            def inner[C, D]():
+                return A, B, C, D
+
+            return inner
+
+        inner = outer()
+        a, b, c, d = inner()
+        self.assertEqual(outer.__type_params__, (a, b))
+        self.assertEqual(inner.__type_params__, (c, d))
+
+    def test_typeparams_dunder_function_02(self):
+        def func1():
+            pass
+
+        self.assertEqual(func1.__type_params__, ())
+
+    def test_typeparams_dunder_function_03(self):
+        code = """
+            def func[A]():
+                pass
+            func.__type_params__ = ()
+        """
+
+        ns = run_code(code)
+        self.assertEqual(ns["func"].__type_params__, ())
+
+
+
+# All these type aliases are used for pickling tests:
+T = TypeVar('T')
+def func1[X](x: X) -> X: ...
+def func2[X, Y](x: X | Y) -> X | Y: ...
+def func3[X, *Y, **Z](x: X, y: tuple[*Y], z: Z) -> X: ...
+def func4[X: int, Y: (bytes, str)](x: X, y: Y) -> X | Y: ...
+
+class Class1[X]: ...
+class Class2[X, Y]: ...
+class Class3[X, *Y, **Z]: ...
+class Class4[X: int, Y: (bytes, str)]: ...
+
+
+class TypeParamsPickleTest(unittest.TestCase):
+    def test_pickling_functions(self):
+        things_to_test = [
+            func1,
+            func2,
+            func3,
+            func4,
+        ]
+        for thing in things_to_test:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(thing=thing, proto=proto):
+                    pickled = pickle.dumps(thing, protocol=proto)
+                    self.assertEqual(pickle.loads(pickled), thing)
+
+    def test_pickling_classes(self):
+        things_to_test = [
+            Class1,
+            Class1[int],
+            Class1[T],
+
+            Class2,
+            Class2[int, T],
+            Class2[T, int],
+            Class2[int, str],
+
+            Class3,
+            Class3[int, T, str, bytes, [float, object, T]],
+
+            Class4,
+            Class4[int, bytes],
+            Class4[T, bytes],
+            Class4[int, T],
+            Class4[T, T],
+        ]
+        for thing in things_to_test:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(thing=thing, proto=proto):
+                    pickled = pickle.dumps(thing, protocol=proto)
+                    self.assertEqual(pickle.loads(pickled), thing)
+
+        for klass in things_to_test:
+            real_class = getattr(klass, '__origin__', klass)
+            thing = klass()
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(thing=thing, proto=proto):
+                    pickled = pickle.dumps(thing, protocol=proto)
+                    # These instances are not equal,
+                    # but class check is good enough:
+                    self.assertIsInstance(pickle.loads(pickled), real_class)
+
+
+class TypeParamsWeakRefTest(unittest.TestCase):
+    def test_weakrefs(self):
+        T = TypeVar('T')
+        P = ParamSpec('P')
+        class OldStyle(Generic[T]):
+            pass
+
+        class NewStyle[T]:
+            pass
+
+        cases = [
+            T,
+            TypeVar('T', bound=int),
+            P,
+            P.args,
+            P.kwargs,
+            TypeVarTuple('Ts'),
+            OldStyle,
+            OldStyle[int],
+            OldStyle(),
+            NewStyle,
+            NewStyle[int],
+            NewStyle(),
+            Generic[T],
+        ]
+        for case in cases:
+            with self.subTest(case=case):
+                weakref.ref(case)
+
+
+class TypeParamsRuntimeTest(unittest.TestCase):
+    def test_name_error(self):
+        # gh-109118: This crashed the interpreter due to a refcounting bug
+        code = """
+        class name_2[name_5]:
+            class name_4[name_5](name_0):
+                pass
+        """
+        with self.assertRaises(NameError):
+            run_code(code)
+
+        # Crashed with a slightly different stack trace
+        code = """
+        class name_2[name_5]:
+            class name_4[name_5: name_5](name_0):
+                pass
+        """
+        with self.assertRaises(NameError):
+            run_code(code)
+
+    def test_broken_class_namespace(self):
+        code = """
+        class WeirdMapping(dict):
+            def __missing__(self, key):
+                if key == "T":
+                    raise RuntimeError
+                raise KeyError(key)
+
+        class Meta(type):
+            def __prepare__(name, bases):
+                return WeirdMapping()
+
+        class MyClass[V](metaclass=Meta):
+            class Inner[U](T):
+                pass
+        """
+        with self.assertRaises(RuntimeError):
+            run_code(code)
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
index 89548100da62d7..da32c4ea6477ce 100644
--- a/Lib/test/test_types.py
+++ b/Lib/test/test_types.py
@@ -4,6 +4,7 @@
 import collections.abc
 from collections import namedtuple
 import copy
+import _datetime
 import gc
 import inspect
 import pickle
@@ -226,8 +227,8 @@ def test_type_function(self):
     def test_int__format__(self):
         def test(i, format_spec, result):
             # just make sure we have the unified type for integers
-            assert type(i) == int
-            assert type(format_spec) == str
+            self.assertIs(type(i), int)
+            self.assertIs(type(format_spec), str)
             self.assertEqual(i.__format__(format_spec), result)
 
         test(123456789, 'd', '123456789')
@@ -636,6 +637,9 @@ def test_traceback_and_frame_types(self):
         self.assertIsInstance(exc.__traceback__, types.TracebackType)
         self.assertIsInstance(exc.__traceback__.tb_frame, types.FrameType)
 
+    def test_capsule_type(self):
+        self.assertIsInstance(_datetime.datetime_CAPI, types.CapsuleType)
+
 
 class UnionTests(unittest.TestCase):
 
@@ -782,8 +786,8 @@ def __subclasscheck__(cls, sub):
 
     def test_or_type_operator_with_TypeVar(self):
         TV = typing.TypeVar('T')
-        assert TV | str == typing.Union[TV, str]
-        assert str | TV == typing.Union[str, TV]
+        self.assertEqual(TV | str, typing.Union[TV, str])
+        self.assertEqual(str | TV, typing.Union[str, TV])
         self.assertIs((int | TV)[int], int)
         self.assertIs((TV | int)[int], int)
 
@@ -887,43 +891,45 @@ def test_or_type_operator_with_forward(self):
         ForwardBefore = 'Forward' | T
         def forward_after(x: ForwardAfter[int]) -> None: ...
         def forward_before(x: ForwardBefore[int]) -> None: ...
-        assert typing.get_args(typing.get_type_hints(forward_after)['x']) == (int, Forward)
-        assert typing.get_args(typing.get_type_hints(forward_before)['x']) == (int, Forward)
+        self.assertEqual(typing.get_args(typing.get_type_hints(forward_after)['x']),
+                         (int, Forward))
+        self.assertEqual(typing.get_args(typing.get_type_hints(forward_before)['x']),
+                         (int, Forward))
 
     def test_or_type_operator_with_Protocol(self):
         class Proto(typing.Protocol):
             def meth(self) -> int:
                 ...
-        assert Proto | str == typing.Union[Proto, str]
+        self.assertEqual(Proto | str, typing.Union[Proto, str])
 
     def test_or_type_operator_with_Alias(self):
-        assert list | str == typing.Union[list, str]
-        assert typing.List | str == typing.Union[typing.List, str]
+        self.assertEqual(list | str, typing.Union[list, str])
+        self.assertEqual(typing.List | str, typing.Union[typing.List, str])
 
     def test_or_type_operator_with_NamedTuple(self):
-        NT=namedtuple('A', ['B', 'C', 'D'])
-        assert NT | str == typing.Union[NT,str]
+        NT = namedtuple('A', ['B', 'C', 'D'])
+        self.assertEqual(NT | str, typing.Union[NT, str])
 
     def test_or_type_operator_with_TypedDict(self):
         class Point2D(typing.TypedDict):
             x: int
             y: int
             label: str
-        assert Point2D | str == typing.Union[Point2D, str]
+        self.assertEqual(Point2D | str, typing.Union[Point2D, str])
 
     def test_or_type_operator_with_NewType(self):
         UserId = typing.NewType('UserId', int)
-        assert UserId | str == typing.Union[UserId, str]
+        self.assertEqual(UserId | str, typing.Union[UserId, str])
 
     def test_or_type_operator_with_IO(self):
-        assert typing.IO | str == typing.Union[typing.IO, str]
+        self.assertEqual(typing.IO | str, typing.Union[typing.IO, str])
 
     def test_or_type_operator_with_SpecialForm(self):
-        assert typing.Any | str == typing.Union[typing.Any, str]
-        assert typing.NoReturn | str == typing.Union[typing.NoReturn, str]
-        assert typing.Optional[int] | str == typing.Union[typing.Optional[int], str]
-        assert typing.Optional[int] | str == typing.Union[int, str, None]
-        assert typing.Union[int, bool] | str == typing.Union[int, bool, str]
+        self.assertEqual(typing.Any | str, typing.Union[typing.Any, str])
+        self.assertEqual(typing.NoReturn | str, typing.Union[typing.NoReturn, str])
+        self.assertEqual(typing.Optional[int] | str, typing.Union[typing.Optional[int], str])
+        self.assertEqual(typing.Optional[int] | str, typing.Union[int, str, None])
+        self.assertEqual(typing.Union[int, bool] | str, typing.Union[int, bool, str])
 
     def test_or_type_operator_with_Literal(self):
         Literal = typing.Literal
@@ -955,12 +961,12 @@ class Ints(enum.IntEnum):
                          (Literal[1], Literal[Ints.B]))
 
     def test_or_type_repr(self):
-        assert repr(int | str) == "int | str"
-        assert repr((int | str) | list) == "int | str | list"
-        assert repr(int | (str | list)) == "int | str | list"
-        assert repr(int | None) == "int | None"
-        assert repr(int | type(None)) == "int | None"
-        assert repr(int | typing.GenericAlias(list, int)) == "int | list[int]"
+        self.assertEqual(repr(int | str), "int | str")
+        self.assertEqual(repr((int | str) | list), "int | str | list")
+        self.assertEqual(repr(int | (str | list)), "int | str | list")
+        self.assertEqual(repr(int | None), "int | None")
+        self.assertEqual(repr(int | type(None)), "int | None")
+        self.assertEqual(repr(int | typing.GenericAlias(list, int)), "int | list[int]")
 
     def test_or_type_operator_with_genericalias(self):
         a = list[int]
@@ -1395,6 +1401,7 @@ class A: pass
         class B(typing.Generic[T]): pass
         class C(B[int]): pass
         class D(B[str], float): pass
+
         self.assertEqual(types.get_original_bases(A), (object,))
         self.assertEqual(types.get_original_bases(B), (typing.Generic[T],))
         self.assertEqual(types.get_original_bases(C), (B[int],))
@@ -1407,6 +1414,18 @@ class F(list[int]): pass
         self.assertEqual(types.get_original_bases(E), (list[T],))
         self.assertEqual(types.get_original_bases(F), (list[int],))
 
+        class FirstBase(typing.Generic[T]): pass
+        class SecondBase(typing.Generic[T]): pass
+        class First(FirstBase[int]): pass
+        class Second(SecondBase[int]): pass
+        class G(First, Second): pass
+        self.assertEqual(types.get_original_bases(G), (First, Second))
+
+        class First_(typing.Generic[T]): pass
+        class Second_(typing.Generic[T]): pass
+        class H(First_, Second_): pass
+        self.assertEqual(types.get_original_bases(H), (First_, Second_))
+
         class ClassBasedNamedTuple(typing.NamedTuple):
             x: int
 
@@ -1885,6 +1904,33 @@ def test_pickle(self):
 
             self.assertEqual(ns, ns_roundtrip, pname)
 
+    def test_replace(self):
+        ns = types.SimpleNamespace(x=11, y=22)
+
+        ns2 = copy.replace(ns)
+        self.assertEqual(ns2, ns)
+        self.assertIsNot(ns2, ns)
+        self.assertIs(type(ns2), types.SimpleNamespace)
+        self.assertEqual(vars(ns2), {'x': 11, 'y': 22})
+        ns2.x = 3
+        self.assertEqual(ns.x, 11)
+        ns.x = 4
+        self.assertEqual(ns2.x, 3)
+
+        self.assertEqual(vars(copy.replace(ns, x=1)), {'x': 1, 'y': 22})
+        self.assertEqual(vars(copy.replace(ns, y=2)), {'x': 4, 'y': 2})
+        self.assertEqual(vars(copy.replace(ns, x=1, y=2)), {'x': 1, 'y': 2})
+
+    def test_replace_subclass(self):
+        class Spam(types.SimpleNamespace):
+            pass
+
+        spam = Spam(ham=8, eggs=9)
+        spam2 = copy.replace(spam, ham=5)
+
+        self.assertIs(type(spam2), Spam)
+        self.assertEqual(vars(spam2), {'ham': 5, 'eggs': 9})
+
     def test_fake_namespace_compare(self):
         # Issue #24257: Incorrect use of PyObject_IsInstance() caused
         # SystemError.
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index e1c6a8a7f376eb..2d10c39840ddf3 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -1,14 +1,15 @@
 import contextlib
 import collections
+import collections.abc
 from collections import defaultdict
 from functools import lru_cache, wraps
+import gc
 import inspect
 import itertools
 import pickle
 import re
 import sys
-import warnings
-from unittest import TestCase, main, skipUnless, skip
+from unittest import TestCase, main, skip
 from unittest.mock import patch
 from copy import copy, deepcopy
 
@@ -22,9 +23,9 @@
 from typing import Generic, ClassVar, Final, final, Protocol
 from typing import assert_type, cast, runtime_checkable
 from typing import get_type_hints
-from typing import get_origin, get_args
+from typing import get_origin, get_args, get_protocol_members
 from typing import override
-from typing import is_typeddict
+from typing import is_typeddict, is_protocol
 from typing import reveal_type
 from typing import dataclass_transform
 from typing import no_type_check, no_type_check_decorator
@@ -43,16 +44,12 @@
 import weakref
 import types
 
-from test.support import import_helper, captured_stderr, cpython_only
-from test import mod_generics_cache
-from test import _typed_dict_helper
-
-
-py_typing = import_helper.import_fresh_module('typing', blocked=['_typing'])
-c_typing = import_helper.import_fresh_module('typing', fresh=['_typing'])
+from test.support import captured_stderr, cpython_only, infinite_recursion
+from test.typinganndata import mod_generics_cache, _typed_dict_helper
 
 
 CANNOT_SUBCLASS_TYPE = 'Cannot subclass special typing classes'
+NOT_A_BASE_TYPE = "type 'typing.%s' is not an acceptable base type"
 CANNOT_SUBCLASS_INSTANCE = 'Cannot subclass an instance of %s'
 
 
@@ -186,7 +183,7 @@ def test_cannot_subclass(self):
             class A(self.bottom_type):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class A(type(self.bottom_type)):
+            class B(type(self.bottom_type)):
                 pass
 
     def test_cannot_instantiate(self):
@@ -283,7 +280,7 @@ class C(type(Self)):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.Self'):
-            class C(Self):
+            class D(Self):
                 pass
 
     def test_cannot_init(self):
@@ -340,7 +337,7 @@ class C(type(LiteralString)):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.LiteralString'):
-            class C(LiteralString):
+            class D(LiteralString):
                 pass
 
     def test_cannot_init(self):
@@ -370,6 +367,55 @@ def test_basic_plain(self):
         self.assertEqual(T, T)
         # T is an instance of TypeVar
         self.assertIsInstance(T, TypeVar)
+        self.assertEqual(T.__name__, 'T')
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, None)
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, False)
+        self.assertEqual(T.__module__, __name__)
+
+    def test_basic_with_exec(self):
+        ns = {}
+        exec('from typing import TypeVar; T = TypeVar("T", bound=float)', ns, ns)
+        T = ns['T']
+        self.assertIsInstance(T, TypeVar)
+        self.assertEqual(T.__name__, 'T')
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, float)
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, False)
+        self.assertIs(T.__module__, None)
+
+    def test_attributes(self):
+        T_bound = TypeVar('T_bound', bound=int)
+        self.assertEqual(T_bound.__name__, 'T_bound')
+        self.assertEqual(T_bound.__constraints__, ())
+        self.assertIs(T_bound.__bound__, int)
+
+        T_constraints = TypeVar('T_constraints', int, str)
+        self.assertEqual(T_constraints.__name__, 'T_constraints')
+        self.assertEqual(T_constraints.__constraints__, (int, str))
+        self.assertIs(T_constraints.__bound__, None)
+
+        T_co = TypeVar('T_co', covariant=True)
+        self.assertEqual(T_co.__name__, 'T_co')
+        self.assertIs(T_co.__covariant__, True)
+        self.assertIs(T_co.__contravariant__, False)
+        self.assertIs(T_co.__infer_variance__, False)
+
+        T_contra = TypeVar('T_contra', contravariant=True)
+        self.assertEqual(T_contra.__name__, 'T_contra')
+        self.assertIs(T_contra.__covariant__, False)
+        self.assertIs(T_contra.__contravariant__, True)
+        self.assertIs(T_contra.__infer_variance__, False)
+
+        T_infer = TypeVar('T_infer', infer_variance=True)
+        self.assertEqual(T_infer.__name__, 'T_infer')
+        self.assertIs(T_infer.__covariant__, False)
+        self.assertIs(T_infer.__contravariant__, False)
+        self.assertIs(T_infer.__infer_variance__, True)
 
     def test_typevar_instance_type_error(self):
         T = TypeVar('T')
@@ -430,12 +476,12 @@ def test_no_redefinition(self):
         self.assertNotEqual(TypeVar('T', int, str), TypeVar('T', int, str))
 
     def test_cannot_subclass(self):
-        with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
+        with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'TypeVar'):
             class V(TypeVar): pass
         T = TypeVar("T")
         with self.assertRaisesRegex(TypeError,
                 CANNOT_SUBCLASS_INSTANCE % 'TypeVar'):
-            class V(T): pass
+            class W(T): pass
 
     def test_cannot_instantiate_vars(self):
         with self.assertRaises(TypeError):
@@ -446,6 +492,9 @@ def test_bound_errors(self):
             TypeVar('X', bound=Union)
         with self.assertRaises(TypeError):
             TypeVar('X', str, float, bound=Employee)
+        with self.assertRaisesRegex(TypeError,
+                                    r"Bound must be a type\. Got \(1, 2\)\."):
+            TypeVar('X', bound=(1, 2))
 
     def test_missing__name__(self):
         # See bpo-39942
@@ -458,6 +507,12 @@ def test_no_bivariant(self):
         with self.assertRaises(ValueError):
             TypeVar('T', covariant=True, contravariant=True)
 
+    def test_cannot_combine_explicit_and_infer(self):
+        with self.assertRaises(ValueError):
+            TypeVar('T', covariant=True, infer_variance=True)
+        with self.assertRaises(ValueError):
+            TypeVar('T', contravariant=True, infer_variance=True)
+
     def test_var_substitution(self):
         T = TypeVar('T')
         subst = T.__typing_subst__
@@ -487,6 +542,22 @@ def test_bad_var_substitution(self):
                 with self.assertRaises(TypeError):
                     list[T][arg]
 
+    def test_many_weakrefs(self):
+        # gh-108295: this used to segfault
+        for cls in (ParamSpec, TypeVarTuple, TypeVar):
+            with self.subTest(cls=cls):
+                vals = weakref.WeakValueDictionary()
+
+                for x in range(10):
+                    vals[x] = cls(str(x))
+                del vals
+
+    def test_constructor(self):
+        T = TypeVar(name="T")
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, None)
+
 
 def template_replace(templates: list[str], replacements: dict[str, list[str]]) -> list[tuple[str]]:
     """Renders templates with possible combinations of replacements.
@@ -898,6 +969,17 @@ def test_name(self):
         Ts2 = TypeVarTuple('Ts2')
         self.assertEqual(Ts2.__name__, 'Ts2')
 
+    def test_module(self):
+        Ts = TypeVarTuple('Ts')
+        self.assertEqual(Ts.__module__, __name__)
+
+    def test_exec(self):
+        ns = {}
+        exec('from typing import TypeVarTuple; Ts = TypeVarTuple("Ts")', ns)
+        Ts = ns['Ts']
+        self.assertEqual(Ts.__name__, 'Ts')
+        self.assertIs(Ts.__module__, None)
+
     def test_instance_is_equal_to_itself(self):
         Ts = TypeVarTuple('Ts')
         self.assertEqual(Ts, Ts)
@@ -1161,25 +1243,25 @@ class A(Generic[Unpack[Ts]]): pass
         self.assertEndsWith(repr(K[float, str]), 'A[float, str, typing.Unpack[typing.Tuple[str, ...]]]')
 
     def test_cannot_subclass(self):
-        with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
+        with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'TypeVarTuple'):
             class C(TypeVarTuple): pass
         Ts = TypeVarTuple('Ts')
         with self.assertRaisesRegex(TypeError,
                 CANNOT_SUBCLASS_INSTANCE % 'TypeVarTuple'):
-            class C(Ts): pass
+            class D(Ts): pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(Unpack)): pass
+            class E(type(Unpack)): pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(*Ts)): pass
+            class F(type(*Ts)): pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(Unpack[Ts])): pass
+            class G(type(Unpack[Ts])): pass
         with self.assertRaisesRegex(TypeError,
                                     r'Cannot subclass typing\.Unpack'):
-            class C(Unpack): pass
+            class H(Unpack): pass
         with self.assertRaisesRegex(TypeError, r'Cannot subclass typing.Unpack\[Ts\]'):
-            class C(*Ts): pass
+            class I(*Ts): pass
         with self.assertRaisesRegex(TypeError, r'Cannot subclass typing.Unpack\[Ts\]'):
-            class C(Unpack[Ts]): pass
+            class J(Unpack[Ts]): pass
 
     def test_variadic_class_args_are_correct(self):
         T = TypeVar('T')
@@ -1353,12 +1435,12 @@ def test_variadic_class_with_duplicate_typevartuples_fails(self):
         with self.assertRaises(TypeError):
             class C(Generic[*Ts1, *Ts1]): pass
         with self.assertRaises(TypeError):
-            class C(Generic[Unpack[Ts1], Unpack[Ts1]]): pass
+            class D(Generic[Unpack[Ts1], Unpack[Ts1]]): pass
 
         with self.assertRaises(TypeError):
-            class C(Generic[*Ts1, *Ts2, *Ts1]): pass
+            class E(Generic[*Ts1, *Ts2, *Ts1]): pass
         with self.assertRaises(TypeError):
-            class C(Generic[Unpack[Ts1], Unpack[Ts2], Unpack[Ts1]]): pass
+            class F(Generic[Unpack[Ts1], Unpack[Ts2], Unpack[Ts1]]): pass
 
     def test_type_concatenation_in_variadic_class_argument_list_succeeds(self):
         Ts = TypeVarTuple('Ts')
@@ -1726,11 +1808,11 @@ def test_cannot_subclass(self):
             class C(Union):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(Union)):
+            class D(type(Union)):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.Union\[int, str\]'):
-            class C(Union[int, str]):
+            class E(Union[int, str]):
                 pass
 
     def test_cannot_instantiate(self):
@@ -1927,13 +2009,13 @@ def test_callable_instance_type_error(self):
         def f():
             pass
         with self.assertRaises(TypeError):
-            self.assertIsInstance(f, Callable[[], None])
+            isinstance(f, Callable[[], None])
         with self.assertRaises(TypeError):
-            self.assertIsInstance(f, Callable[[], Any])
+            isinstance(f, Callable[[], Any])
         with self.assertRaises(TypeError):
-            self.assertNotIsInstance(None, Callable[[], None])
+            isinstance(None, Callable[[], None])
         with self.assertRaises(TypeError):
-            self.assertNotIsInstance(None, Callable[[], Any])
+            isinstance(None, Callable[[], Any])
 
     def test_repr(self):
         Callable = self.Callable
@@ -2406,6 +2488,48 @@ def f():
         self.assertNotIsSubclass(types.FunctionType, P)
         self.assertNotIsInstance(f, P)
 
+    def test_runtime_checkable_generic_non_protocol(self):
+        # Make sure this doesn't raise AttributeError
+        with self.assertRaisesRegex(
+            TypeError,
+            "@runtime_checkable can be only applied to protocol classes",
+        ):
+            @runtime_checkable
+            class Foo[T]: ...
+
+    def test_runtime_checkable_generic(self):
+        @runtime_checkable
+        class Foo[T](Protocol):
+            def meth(self) -> T: ...
+
+        class Impl:
+            def meth(self) -> int: ...
+
+        self.assertIsSubclass(Impl, Foo)
+
+        class NotImpl:
+            def method(self) -> int: ...
+
+        self.assertNotIsSubclass(NotImpl, Foo)
+
+    def test_pep695_generics_can_be_runtime_checkable(self):
+        @runtime_checkable
+        class HasX(Protocol):
+            x: int
+
+        class Bar[T]:
+            x: T
+            def __init__(self, x):
+                self.x = x
+
+        class Capybara[T]:
+            y: str
+            def __init__(self, y):
+                self.y = y
+
+        self.assertIsInstance(Bar(1), HasX)
+        self.assertNotIsInstance(Capybara('a'), HasX)
+
     def test_everything_implements_empty_protocol(self):
         @runtime_checkable
         class Empty(Protocol):
@@ -2437,10 +2561,10 @@ class BP(Protocol): pass
             class P(C, Protocol):
                 pass
         with self.assertRaises(TypeError):
-            class P(Protocol, C):
+            class Q(Protocol, C):
                 pass
         with self.assertRaises(TypeError):
-            class P(BP, C, Protocol):
+            class R(BP, C, Protocol):
                 pass
 
         class D(BP, C): pass
@@ -2614,19 +2738,187 @@ def x(self): ...
         self.assertIsSubclass(C, PG)
         self.assertIsSubclass(BadP, PG)
 
-        with self.assertRaises(TypeError):
+        no_subscripted_generics = (
+            "Subscripted generics cannot be used with class and instance checks"
+        )
+
+        with self.assertRaisesRegex(TypeError, no_subscripted_generics):
             issubclass(C, PG[T])
-        with self.assertRaises(TypeError):
+        with self.assertRaisesRegex(TypeError, no_subscripted_generics):
             issubclass(C, PG[C])
-        with self.assertRaises(TypeError):
+
+        only_runtime_checkable_protocols = (
+            "Instance and class checks can only be used with "
+            "@runtime_checkable protocols"
+        )
+
+        with self.assertRaisesRegex(TypeError, only_runtime_checkable_protocols):
             issubclass(C, BadP)
-        with self.assertRaises(TypeError):
+        with self.assertRaisesRegex(TypeError, only_runtime_checkable_protocols):
             issubclass(C, BadPG)
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(TypeError, no_subscripted_generics):
             issubclass(P, PG[T])
-        with self.assertRaises(TypeError):
+        with self.assertRaisesRegex(TypeError, no_subscripted_generics):
             issubclass(PG, PG[int])
 
+        only_classes_allowed = r"issubclass\(\) arg 1 must be a class"
+
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass(1, P)
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass(1, PG)
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass(1, BadP)
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass(1, BadPG)
+
+    def test_implicit_issubclass_between_two_protocols(self):
+        @runtime_checkable
+        class CallableMembersProto(Protocol):
+            def meth(self): ...
+
+        # All the below protocols should be considered "subclasses"
+        # of CallableMembersProto at runtime,
+        # even though none of them explicitly subclass CallableMembersProto
+
+        class IdenticalProto(Protocol):
+            def meth(self): ...
+
+        class SupersetProto(Protocol):
+            def meth(self): ...
+            def meth2(self): ...
+
+        class NonCallableMembersProto(Protocol):
+            meth: Callable[[], None]
+
+        class NonCallableMembersSupersetProto(Protocol):
+            meth: Callable[[], None]
+            meth2: Callable[[str, int], bool]
+
+        class MixedMembersProto1(Protocol):
+            meth: Callable[[], None]
+            def meth2(self): ...
+
+        class MixedMembersProto2(Protocol):
+            def meth(self): ...
+            meth2: Callable[[str, int], bool]
+
+        for proto in (
+            IdenticalProto, SupersetProto, NonCallableMembersProto,
+            NonCallableMembersSupersetProto, MixedMembersProto1, MixedMembersProto2
+        ):
+            with self.subTest(proto=proto.__name__):
+                self.assertIsSubclass(proto, CallableMembersProto)
+
+        # These two shouldn't be considered subclasses of CallableMembersProto, however,
+        # since they don't have the `meth` protocol member
+
+        class EmptyProtocol(Protocol): ...
+        class UnrelatedProtocol(Protocol):
+            def wut(self): ...
+
+        self.assertNotIsSubclass(EmptyProtocol, CallableMembersProto)
+        self.assertNotIsSubclass(UnrelatedProtocol, CallableMembersProto)
+
+        # These aren't protocols at all (despite having annotations),
+        # so they should only be considered subclasses of CallableMembersProto
+        # if they *actually have an attribute* matching the `meth` member
+        # (just having an annotation is insufficient)
+
+        class AnnotatedButNotAProtocol:
+            meth: Callable[[], None]
+
+        class NotAProtocolButAnImplicitSubclass:
+            def meth(self): pass
+
+        class NotAProtocolButAnImplicitSubclass2:
+            meth: Callable[[], None]
+            def meth(self): pass
+
+        class NotAProtocolButAnImplicitSubclass3:
+            meth: Callable[[], None]
+            meth2: Callable[[int, str], bool]
+            def meth(self): pass
+            def meth2(self, x, y): return True
+
+        self.assertNotIsSubclass(AnnotatedButNotAProtocol, CallableMembersProto)
+        self.assertIsSubclass(NotAProtocolButAnImplicitSubclass, CallableMembersProto)
+        self.assertIsSubclass(NotAProtocolButAnImplicitSubclass2, CallableMembersProto)
+        self.assertIsSubclass(NotAProtocolButAnImplicitSubclass3, CallableMembersProto)
+
+    def test_isinstance_checks_not_at_whim_of_gc(self):
+        self.addCleanup(gc.enable)
+        gc.disable()
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "Protocols can only inherit from other protocols"
+        ):
+            class Foo(collections.abc.Mapping, Protocol):
+                pass
+
+        self.assertNotIsInstance([], collections.abc.Mapping)
+
+    def test_issubclass_and_isinstance_on_Protocol_itself(self):
+        class C:
+            def x(self): pass
+
+        self.assertNotIsSubclass(object, Protocol)
+        self.assertNotIsInstance(object(), Protocol)
+
+        self.assertNotIsSubclass(str, Protocol)
+        self.assertNotIsInstance('foo', Protocol)
+
+        self.assertNotIsSubclass(C, Protocol)
+        self.assertNotIsInstance(C(), Protocol)
+
+        only_classes_allowed = r"issubclass\(\) arg 1 must be a class"
+
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass(1, Protocol)
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass('foo', Protocol)
+        with self.assertRaisesRegex(TypeError, only_classes_allowed):
+            issubclass(C(), Protocol)
+
+        T = TypeVar('T')
+
+        @runtime_checkable
+        class EmptyProtocol(Protocol): pass
+
+        @runtime_checkable
+        class SupportsStartsWith(Protocol):
+            def startswith(self, x: str) -> bool: ...
+
+        @runtime_checkable
+        class SupportsX(Protocol[T]):
+            def x(self): ...
+
+        for proto in EmptyProtocol, SupportsStartsWith, SupportsX:
+            with self.subTest(proto=proto.__name__):
+                self.assertIsSubclass(proto, Protocol)
+
+        # gh-105237 / PR #105239:
+        # check that the presence of Protocol subclasses
+        # where `issubclass(X, <subclass>)` evaluates to True
+        # doesn't influence the result of `issubclass(X, Protocol)`
+
+        self.assertIsSubclass(object, EmptyProtocol)
+        self.assertIsInstance(object(), EmptyProtocol)
+        self.assertNotIsSubclass(object, Protocol)
+        self.assertNotIsInstance(object(), Protocol)
+
+        self.assertIsSubclass(str, SupportsStartsWith)
+        self.assertIsInstance('foo', SupportsStartsWith)
+        self.assertNotIsSubclass(str, Protocol)
+        self.assertNotIsInstance('foo', Protocol)
+
+        self.assertIsSubclass(C, SupportsX)
+        self.assertIsInstance(C(), SupportsX)
+        self.assertNotIsSubclass(C, Protocol)
+        self.assertNotIsInstance(C(), Protocol)
+
     def test_protocols_issubclass_non_callable(self):
         class C:
             x = 1
@@ -2635,12 +2927,19 @@ class C:
         class PNonCall(Protocol):
             x = 1
 
-        with self.assertRaises(TypeError):
+        non_callable_members_illegal = (
+            "Protocols with non-method members don't support issubclass()"
+        )
+
+        with self.assertRaisesRegex(TypeError, non_callable_members_illegal):
             issubclass(C, PNonCall)
+
         self.assertIsInstance(C(), PNonCall)
         PNonCall.register(C)
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(TypeError, non_callable_members_illegal):
             issubclass(C, PNonCall)
+
         self.assertIsInstance(C(), PNonCall)
 
         # check that non-protocol subclasses are not affected
@@ -2651,9 +2950,98 @@ class D(PNonCall): ...
         D.register(C)
         self.assertIsSubclass(C, D)
         self.assertIsInstance(C(), D)
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(TypeError, non_callable_members_illegal):
             issubclass(D, PNonCall)
 
+    def test_no_weird_caching_with_issubclass_after_isinstance(self):
+        @runtime_checkable
+        class Spam(Protocol):
+            x: int
+
+        class Eggs:
+            def __init__(self) -> None:
+                self.x = 42
+
+        self.assertIsInstance(Eggs(), Spam)
+
+        # gh-104555: If we didn't override ABCMeta.__subclasscheck__ in _ProtocolMeta,
+        # TypeError wouldn't be raised here,
+        # as the cached result of the isinstance() check immediately above
+        # would mean the issubclass() call would short-circuit
+        # before we got to the "raise TypeError" line
+        with self.assertRaisesRegex(
+            TypeError,
+            "Protocols with non-method members don't support issubclass()"
+        ):
+            issubclass(Eggs, Spam)
+
+    def test_no_weird_caching_with_issubclass_after_isinstance_2(self):
+        @runtime_checkable
+        class Spam(Protocol):
+            x: int
+
+        class Eggs: ...
+
+        self.assertNotIsInstance(Eggs(), Spam)
+
+        # gh-104555: If we didn't override ABCMeta.__subclasscheck__ in _ProtocolMeta,
+        # TypeError wouldn't be raised here,
+        # as the cached result of the isinstance() check immediately above
+        # would mean the issubclass() call would short-circuit
+        # before we got to the "raise TypeError" line
+        with self.assertRaisesRegex(
+            TypeError,
+            "Protocols with non-method members don't support issubclass()"
+        ):
+            issubclass(Eggs, Spam)
+
+    def test_no_weird_caching_with_issubclass_after_isinstance_3(self):
+        @runtime_checkable
+        class Spam(Protocol):
+            x: int
+
+        class Eggs:
+            def __getattr__(self, attr):
+                if attr == "x":
+                    return 42
+                raise AttributeError(attr)
+
+        self.assertNotIsInstance(Eggs(), Spam)
+
+        # gh-104555: If we didn't override ABCMeta.__subclasscheck__ in _ProtocolMeta,
+        # TypeError wouldn't be raised here,
+        # as the cached result of the isinstance() check immediately above
+        # would mean the issubclass() call would short-circuit
+        # before we got to the "raise TypeError" line
+        with self.assertRaisesRegex(
+            TypeError,
+            "Protocols with non-method members don't support issubclass()"
+        ):
+            issubclass(Eggs, Spam)
+
+    def test_no_weird_caching_with_issubclass_after_isinstance_pep695(self):
+        @runtime_checkable
+        class Spam[T](Protocol):
+            x: T
+
+        class Eggs[T]:
+            def __init__(self, x: T) -> None:
+                self.x = x
+
+        self.assertIsInstance(Eggs(42), Spam)
+
+        # gh-104555: If we didn't override ABCMeta.__subclasscheck__ in _ProtocolMeta,
+        # TypeError wouldn't be raised here,
+        # as the cached result of the isinstance() check immediately above
+        # would mean the issubclass() call would short-circuit
+        # before we got to the "raise TypeError" line
+        with self.assertRaisesRegex(
+            TypeError,
+            "Protocols with non-method members don't support issubclass()"
+        ):
+            issubclass(Eggs, Spam)
+
     def test_protocols_isinstance(self):
         T = TypeVar('T')
 
@@ -2699,13 +3087,21 @@ def __init__(self):
                 with self.subTest(klass=klass.__name__, proto=proto.__name__):
                     self.assertIsInstance(klass(), proto)
 
-        with self.assertRaises(TypeError):
+        no_subscripted_generics = "Subscripted generics cannot be used with class and instance checks"
+
+        with self.assertRaisesRegex(TypeError, no_subscripted_generics):
             isinstance(C(), PG[T])
-        with self.assertRaises(TypeError):
+        with self.assertRaisesRegex(TypeError, no_subscripted_generics):
             isinstance(C(), PG[C])
-        with self.assertRaises(TypeError):
+
+        only_runtime_checkable_msg = (
+            "Instance and class checks can only be used "
+            "with @runtime_checkable protocols"
+        )
+
+        with self.assertRaisesRegex(TypeError, only_runtime_checkable_msg):
             isinstance(C(), BadP)
-        with self.assertRaises(TypeError):
+        with self.assertRaisesRegex(TypeError, only_runtime_checkable_msg):
             isinstance(C(), BadPG)
 
     def test_protocols_isinstance_properties_and_descriptors(self):
@@ -3037,10 +3433,10 @@ class NonP(P):
 
         class NonPR(PR): pass
 
-        class C:
+        class C(metaclass=abc.ABCMeta):
             x = 1
 
-        class D:
+        class D(metaclass=abc.ABCMeta):
             def meth(self): pass
 
         self.assertNotIsInstance(C(), NonP)
@@ -3050,6 +3446,32 @@ def meth(self): pass
         self.assertIsInstance(NonPR(), PR)
         self.assertIsSubclass(NonPR, PR)
 
+        self.assertNotIn("__protocol_attrs__", vars(NonP))
+        self.assertNotIn("__protocol_attrs__", vars(NonPR))
+        self.assertNotIn("__callable_proto_members_only__", vars(NonP))
+        self.assertNotIn("__callable_proto_members_only__", vars(NonPR))
+
+        self.assertEqual(get_protocol_members(P), {"x"})
+        self.assertEqual(get_protocol_members(PR), {"meth"})
+
+        # the returned object should be immutable,
+        # and should be a different object to the original attribute
+        # to prevent users from (accidentally or deliberately)
+        # mutating the attribute on the original class
+        self.assertIsInstance(get_protocol_members(P), frozenset)
+        self.assertIsNot(get_protocol_members(P), P.__protocol_attrs__)
+        self.assertIsInstance(get_protocol_members(PR), frozenset)
+        self.assertIsNot(get_protocol_members(PR), P.__protocol_attrs__)
+
+        acceptable_extra_attrs = {
+            '_is_protocol', '_is_runtime_protocol', '__parameters__',
+            '__init__', '__annotations__', '__subclasshook__',
+        }
+        self.assertLessEqual(vars(NonP).keys(), vars(C).keys() | acceptable_extra_attrs)
+        self.assertLessEqual(
+            vars(NonPR).keys(), vars(D).keys() | acceptable_extra_attrs
+        )
+
     def test_custom_subclasshook(self):
         class P(Protocol):
             x = 1
@@ -3069,15 +3491,68 @@ def __subclasshook__(cls, other):
         self.assertIsSubclass(OKClass, C)
         self.assertNotIsSubclass(BadClass, C)
 
+    def test_custom_subclasshook_2(self):
+        @runtime_checkable
+        class HasX(Protocol):
+            # The presence of a non-callable member
+            # would mean issubclass() checks would fail with TypeError
+            # if it weren't for the custom `__subclasshook__` method
+            x = 1
+
+            @classmethod
+            def __subclasshook__(cls, other):
+                return hasattr(other, 'x')
+
+        class Empty: pass
+
+        class ImplementsHasX:
+            x = 1
+
+        self.assertIsInstance(ImplementsHasX(), HasX)
+        self.assertNotIsInstance(Empty(), HasX)
+        self.assertIsSubclass(ImplementsHasX, HasX)
+        self.assertNotIsSubclass(Empty, HasX)
+
+        # isinstance() and issubclass() checks against this still raise TypeError,
+        # despite the presence of the custom __subclasshook__ method,
+        # as it's not decorated with @runtime_checkable
+        class NotRuntimeCheckable(Protocol):
+            @classmethod
+            def __subclasshook__(cls, other):
+                return hasattr(other, 'x')
+
+        must_be_runtime_checkable = (
+            "Instance and class checks can only be used "
+            "with @runtime_checkable protocols"
+        )
+
+        with self.assertRaisesRegex(TypeError, must_be_runtime_checkable):
+            issubclass(object, NotRuntimeCheckable)
+        with self.assertRaisesRegex(TypeError, must_be_runtime_checkable):
+            isinstance(object(), NotRuntimeCheckable)
+
     def test_issubclass_fails_correctly(self):
         @runtime_checkable
-        class P(Protocol):
+        class NonCallableMembers(Protocol):
             x = 1
 
+        class NotRuntimeCheckable(Protocol):
+            def callable_member(self) -> int: ...
+
+        @runtime_checkable
+        class RuntimeCheckable(Protocol):
+            def callable_member(self) -> int: ...
+
         class C: pass
 
-        with self.assertRaises(TypeError):
-            issubclass(C(), P)
+        # These three all exercise different code paths,
+        # but should result in the same error message:
+        for protocol in NonCallableMembers, NotRuntimeCheckable, RuntimeCheckable:
+            with self.subTest(proto_name=protocol.__name__):
+                with self.assertRaisesRegex(
+                    TypeError, r"issubclass\(\) arg 1 must be a class"
+                ):
+                    issubclass(C(), protocol)
 
     def test_defining_generic_protocols(self):
         T = TypeVar('T')
@@ -3134,6 +3609,24 @@ def bar(self, x: str) -> str:
 
         self.assertIsInstance(Test(), PSub)
 
+    def test_pep695_generic_protocol_callable_members(self):
+        @runtime_checkable
+        class Foo[T](Protocol):
+            def meth(self, x: T) -> None: ...
+
+        class Bar[T]:
+            def meth(self, x: T) -> None: ...
+
+        self.assertIsInstance(Bar(), Foo)
+        self.assertIsSubclass(Bar, Foo)
+
+        @runtime_checkable
+        class SupportsTrunc[T](Protocol):
+            def __trunc__(self) -> T: ...
+
+        self.assertIsInstance(0.0, SupportsTrunc)
+        self.assertIsSubclass(float, SupportsTrunc)
+
     def test_init_called(self):
         T = TypeVar('T')
 
@@ -3182,11 +3675,11 @@ def test_protocols_bad_subscripts(self):
         with self.assertRaises(TypeError):
             class P(Protocol[T, T]): pass
         with self.assertRaises(TypeError):
-            class P(Protocol[int]): pass
+            class Q(Protocol[int]): pass
         with self.assertRaises(TypeError):
-            class P(Protocol[T], Protocol[S]): pass
+            class R(Protocol[T], Protocol[S]): pass
         with self.assertRaises(TypeError):
-            class P(typing.Mapping[T, S], Protocol[T]): pass
+            class S(typing.Mapping[T, S], Protocol[T]): pass
 
     def test_generic_protocols_repr(self):
         T = TypeVar('T')
@@ -3325,6 +3818,39 @@ class E:
 
             self.assertIsInstance(E(), D)
 
+    def test_runtime_checkable_with_match_args(self):
+        @runtime_checkable
+        class P_regular(Protocol):
+            x: int
+            y: int
+
+        @runtime_checkable
+        class P_match(Protocol):
+            __match_args__ = ('x', 'y')
+            x: int
+            y: int
+
+        class Regular:
+            def __init__(self, x: int, y: int):
+                self.x = x
+                self.y = y
+
+        class WithMatch:
+            __match_args__ = ('x', 'y', 'z')
+            def __init__(self, x: int, y: int, z: int):
+                self.x = x
+                self.y = y
+                self.z = z
+
+        class Nope: ...
+
+        self.assertIsInstance(Regular(1, 2), P_regular)
+        self.assertIsInstance(Regular(1, 2), P_match)
+        self.assertIsInstance(WithMatch(1, 2, 3), P_regular)
+        self.assertIsInstance(WithMatch(1, 2, 3), P_match)
+        self.assertNotIsInstance(Nope(), P_regular)
+        self.assertNotIsInstance(Nope(), P_match)
+
     def test_supports_int(self):
         self.assertIsSubclass(int, typing.SupportsInt)
         self.assertNotIsSubclass(str, typing.SupportsInt)
@@ -3397,6 +3923,22 @@ def close(self):
         self.assertIsSubclass(B, Custom)
         self.assertNotIsSubclass(A, Custom)
 
+        @runtime_checkable
+        class ReleasableBuffer(collections.abc.Buffer, Protocol):
+            def __release_buffer__(self, mv: memoryview) -> None: ...
+
+        class C: pass
+        class D:
+            def __buffer__(self, flags: int) -> memoryview:
+                return memoryview(b'')
+            def __release_buffer__(self, mv: memoryview) -> None:
+                pass
+
+        self.assertIsSubclass(D, ReleasableBuffer)
+        self.assertIsInstance(D(), ReleasableBuffer)
+        self.assertNotIsSubclass(C, ReleasableBuffer)
+        self.assertNotIsInstance(C(), ReleasableBuffer)
+
     def test_builtin_protocol_allowlist(self):
         with self.assertRaises(TypeError):
             class CustomProtocol(TestCase, Protocol):
@@ -3422,6 +3964,162 @@ def __init__(self):
 
         Foo()  # Previously triggered RecursionError
 
+    def test_get_protocol_members(self):
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(object)
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(object())
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(Protocol)
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(Generic)
+
+        class P(Protocol):
+            a: int
+            def b(self) -> str: ...
+            @property
+            def c(self) -> int: ...
+
+        self.assertEqual(get_protocol_members(P), {'a', 'b', 'c'})
+        self.assertIsInstance(get_protocol_members(P), frozenset)
+        self.assertIsNot(get_protocol_members(P), P.__protocol_attrs__)
+
+        class Concrete:
+            a: int
+            def b(self) -> str: return "capybara"
+            @property
+            def c(self) -> int: return 5
+
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(Concrete)
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(Concrete())
+
+        class ConcreteInherit(P):
+            a: int = 42
+            def b(self) -> str: return "capybara"
+            @property
+            def c(self) -> int: return 5
+
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(ConcreteInherit)
+        with self.assertRaisesRegex(TypeError, "not a Protocol"):
+            get_protocol_members(ConcreteInherit())
+
+    def test_is_protocol(self):
+        self.assertTrue(is_protocol(Proto))
+        self.assertTrue(is_protocol(Point))
+        self.assertFalse(is_protocol(Concrete))
+        self.assertFalse(is_protocol(Concrete()))
+        self.assertFalse(is_protocol(Generic))
+        self.assertFalse(is_protocol(object))
+
+        # Protocol is not itself a protocol
+        self.assertFalse(is_protocol(Protocol))
+
+    def test_interaction_with_isinstance_checks_on_superclasses_with_ABCMeta(self):
+        # Ensure the cache is empty, or this test won't work correctly
+        collections.abc.Sized._abc_registry_clear()
+
+        class Foo(collections.abc.Sized, Protocol): pass
+
+        # gh-105144: this previously raised TypeError
+        # if a Protocol subclass of Sized had been created
+        # before any isinstance() checks against Sized
+        self.assertNotIsInstance(1, collections.abc.Sized)
+
+    def test_interaction_with_isinstance_checks_on_superclasses_with_ABCMeta_2(self):
+        # Ensure the cache is empty, or this test won't work correctly
+        collections.abc.Sized._abc_registry_clear()
+
+        class Foo(typing.Sized, Protocol): pass
+
+        # gh-105144: this previously raised TypeError
+        # if a Protocol subclass of Sized had been created
+        # before any isinstance() checks against Sized
+        self.assertNotIsInstance(1, typing.Sized)
+
+    def test_empty_protocol_decorated_with_final(self):
+        @final
+        @runtime_checkable
+        class EmptyProtocol(Protocol): ...
+
+        self.assertIsSubclass(object, EmptyProtocol)
+        self.assertIsInstance(object(), EmptyProtocol)
+
+    def test_protocol_decorated_with_final_callable_members(self):
+        @final
+        @runtime_checkable
+        class ProtocolWithMethod(Protocol):
+            def startswith(self, string: str) -> bool: ...
+
+        self.assertIsSubclass(str, ProtocolWithMethod)
+        self.assertNotIsSubclass(int, ProtocolWithMethod)
+        self.assertIsInstance('foo', ProtocolWithMethod)
+        self.assertNotIsInstance(42, ProtocolWithMethod)
+
+    def test_protocol_decorated_with_final_noncallable_members(self):
+        @final
+        @runtime_checkable
+        class ProtocolWithNonCallableMember(Protocol):
+            x: int
+
+        class Foo:
+            x = 42
+
+        only_callable_members_please = (
+            r"Protocols with non-method members don't support issubclass()"
+        )
+
+        with self.assertRaisesRegex(TypeError, only_callable_members_please):
+            issubclass(Foo, ProtocolWithNonCallableMember)
+
+        with self.assertRaisesRegex(TypeError, only_callable_members_please):
+            issubclass(int, ProtocolWithNonCallableMember)
+
+        self.assertIsInstance(Foo(), ProtocolWithNonCallableMember)
+        self.assertNotIsInstance(42, ProtocolWithNonCallableMember)
+
+    def test_protocol_decorated_with_final_mixed_members(self):
+        @final
+        @runtime_checkable
+        class ProtocolWithMixedMembers(Protocol):
+            x: int
+            def method(self) -> None: ...
+
+        class Foo:
+            x = 42
+            def method(self) -> None: ...
+
+        only_callable_members_please = (
+            r"Protocols with non-method members don't support issubclass()"
+        )
+
+        with self.assertRaisesRegex(TypeError, only_callable_members_please):
+            issubclass(Foo, ProtocolWithMixedMembers)
+
+        with self.assertRaisesRegex(TypeError, only_callable_members_please):
+            issubclass(int, ProtocolWithMixedMembers)
+
+        self.assertIsInstance(Foo(), ProtocolWithMixedMembers)
+        self.assertNotIsInstance(42, ProtocolWithMixedMembers)
+
+    def test_protocol_issubclass_error_message(self):
+        class Vec2D(Protocol):
+            x: float
+            y: float
+
+            def square_norm(self) -> float:
+                return self.x ** 2 + self.y ** 2
+
+        self.assertEqual(Vec2D.__protocol_attrs__, {'x', 'y', 'square_norm'})
+        expected_error_message = (
+            "Protocols with non-method members don't support issubclass()."
+            " Non-method members: 'x', 'y'."
+        )
+        with self.assertRaisesRegex(TypeError, re.escape(expected_error_message)):
+            issubclass(int, Vec2D)
+
 
 class GenericTests(BaseTestCase):
 
@@ -3462,12 +4160,28 @@ class NewGeneric(Generic): ...
         with self.assertRaises(TypeError):
             class MyGeneric(Generic[T], Generic[S]): ...
         with self.assertRaises(TypeError):
-            class MyGeneric(List[T], Generic[S]): ...
+            class MyGeneric2(List[T], Generic[S]): ...
         with self.assertRaises(TypeError):
             Generic[()]
-        class C(Generic[T]): pass
+        class D(Generic[T]): pass
         with self.assertRaises(TypeError):
-            C[()]
+            D[()]
+
+    def test_generic_subclass_checks(self):
+        for typ in [list[int], List[int],
+                    tuple[int, str], Tuple[int, str],
+                    typing.Callable[..., None],
+                    collections.abc.Callable[..., None]]:
+            with self.subTest(typ=typ):
+                self.assertRaises(TypeError, issubclass, typ, object)
+                self.assertRaises(TypeError, issubclass, typ, type)
+                self.assertRaises(TypeError, issubclass, typ, typ)
+                self.assertRaises(TypeError, issubclass, object, typ)
+
+                # isinstance is fine:
+                self.assertTrue(isinstance(typ, object))
+                # but, not when the right arg is also a generic:
+                self.assertRaises(TypeError, isinstance, typ, typ)
 
     def test_init(self):
         T = TypeVar('T')
@@ -4188,7 +4902,7 @@ class Test(Generic[T], Final):
             class Subclass(Test):
                 pass
         with self.assertRaises(FinalException):
-            class Subclass(Test[int]):
+            class Subclass2(Test[int]):
                 pass
 
     def test_nested(self):
@@ -4426,15 +5140,15 @@ def test_cannot_subclass(self):
             class C(type(ClassVar)):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(ClassVar[int])):
+            class D(type(ClassVar[int])):
                 pass
         with self.assertRaisesRegex(TypeError,
                                     r'Cannot subclass typing\.ClassVar'):
-            class C(ClassVar):
+            class E(ClassVar):
                 pass
         with self.assertRaisesRegex(TypeError,
                                     r'Cannot subclass typing\.ClassVar\[int\]'):
-            class C(ClassVar[int]):
+            class F(ClassVar[int]):
                 pass
 
     def test_cannot_init(self):
@@ -4476,15 +5190,15 @@ def test_cannot_subclass(self):
             class C(type(Final)):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(Final[int])):
+            class D(type(Final[int])):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.Final'):
-            class C(Final):
+            class E(Final):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.Final\[int\]'):
-            class C(Final[int]):
+            class F(Final[int]):
                 pass
 
     def test_cannot_init(self):
@@ -4739,7 +5453,7 @@ def test_errors(self):
 
 
 # We need this to make sure that `@no_type_check` respects `__module__` attr:
-from test import ann_module8
+from test.typinganndata import ann_module8
 
 @no_type_check
 class NoTypeCheck_Outer:
@@ -4936,10 +5650,11 @@ def fun(x: a): pass
         def cmp(o1, o2):
             return o1 == o2
 
-        r1 = namespace1()
-        r2 = namespace2()
-        self.assertIsNot(r1, r2)
-        self.assertRaises(RecursionError, cmp, r1, r2)
+        with infinite_recursion():
+            r1 = namespace1()
+            r2 = namespace2()
+            self.assertIsNot(r1, r2)
+            self.assertRaises(RecursionError, cmp, r1, r2)
 
     def test_union_forward_recursion(self):
         ValueList = List['Value']
@@ -5172,10 +5887,14 @@ class F:
                 get_type_hints(clazz)
 
     def test_meta_no_type_check(self):
-
-        @no_type_check_decorator
-        def magic_decorator(func):
-            return func
+        depr_msg = (
+            "'typing.no_type_check_decorator' is deprecated "
+            "and slated for removal in Python 3.15"
+        )
+        with self.assertWarnsRegex(DeprecationWarning, depr_msg):
+            @no_type_check_decorator
+            def magic_decorator(func):
+                return func
 
         self.assertEqual(magic_decorator.__name__, 'magic_decorator')
 
@@ -5326,7 +6045,9 @@ def test_overload_registry_repeated(self):
 
 # Definitions needed for features introduced in Python 3.6
 
-from test import ann_module, ann_module2, ann_module3, ann_module5, ann_module6
+from test.typinganndata import (
+    ann_module, ann_module2, ann_module3, ann_module5, ann_module6,
+)
 
 T_a = TypeVar('T_a')
 
@@ -6242,7 +6963,7 @@ def __len__(self):
                 return 0
 
         self.assertEqual(len(MMC()), 0)
-        assert callable(MMC.update)
+        self.assertTrue(callable(MMC.update))
         self.assertIsInstance(MMC(), typing.Mapping)
 
         class MMB(typing.MutableMapping[KT, VT]):
@@ -6437,44 +7158,30 @@ def foo(a: A) -> Optional[BaseException]:
             else:
                 return a()
 
-        assert isinstance(foo(KeyboardInterrupt), KeyboardInterrupt)
-        assert foo(None) is None
+        self.assertIsInstance(foo(KeyboardInterrupt), KeyboardInterrupt)
+        self.assertIsNone(foo(None))
 
 
 class TestModules(TestCase):
     func_names = ['_idfunc']
 
-    def test_py_functions(self):
-        for fname in self.func_names:
-            self.assertEqual(getattr(py_typing, fname).__module__, 'typing')
-
-    @skipUnless(c_typing, 'requires _typing')
     def test_c_functions(self):
         for fname in self.func_names:
-            self.assertEqual(getattr(c_typing, fname).__module__, '_typing')
-
+            self.assertEqual(getattr(typing, fname).__module__, '_typing')
 
-class NewTypeTests:
-    def cleanup(self):
-        for f in self.module._cleanups:
-            f()
 
+class NewTypeTests(BaseTestCase):
     @classmethod
     def setUpClass(cls):
-        sys.modules['typing'] = cls.module
         global UserId
-        UserId = cls.module.NewType('UserId', int)
-        cls.UserName = cls.module.NewType(cls.__qualname__ + '.UserName', str)
+        UserId = typing.NewType('UserId', int)
+        cls.UserName = typing.NewType(cls.__qualname__ + '.UserName', str)
 
     @classmethod
     def tearDownClass(cls):
         global UserId
         del UserId
         del cls.UserName
-        sys.modules['typing'] = typing
-
-    def tearDown(self):
-        self.cleanup()
 
     def test_basic(self):
         self.assertIsInstance(UserId(5), int)
@@ -6491,11 +7198,11 @@ class D(UserId):
     def test_or(self):
         for cls in (int, self.UserName):
             with self.subTest(cls=cls):
-                self.assertEqual(UserId | cls, self.module.Union[UserId, cls])
-                self.assertEqual(cls | UserId, self.module.Union[cls, UserId])
+                self.assertEqual(UserId | cls, typing.Union[UserId, cls])
+                self.assertEqual(cls | UserId, typing.Union[cls, UserId])
 
-                self.assertEqual(self.module.get_args(UserId | cls), (UserId, cls))
-                self.assertEqual(self.module.get_args(cls | UserId), (cls, UserId))
+                self.assertEqual(typing.get_args(UserId | cls), (UserId, cls))
+                self.assertEqual(typing.get_args(cls | UserId), (cls, UserId))
 
     def test_special_attrs(self):
         self.assertEqual(UserId.__name__, 'UserId')
@@ -6516,7 +7223,7 @@ def test_repr(self):
                          f'{__name__}.{self.__class__.__qualname__}.UserName')
 
     def test_pickle(self):
-        UserAge = self.module.NewType('UserAge', float)
+        UserAge = typing.NewType('UserAge', float)
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             with self.subTest(proto=proto):
                 pickled = pickle.dumps(UserId, proto)
@@ -6548,15 +7255,6 @@ class ProUserId(UserId):
                 ...
 
 
-class NewTypePythonTests(NewTypeTests, BaseTestCase):
-    module = py_typing
-
-
-@skipUnless(c_typing, 'requires _typing')
-class NewTypeCTests(NewTypeTests, BaseTestCase):
-    module = c_typing
-
-
 class NamedTupleTests(BaseTestCase):
     class NestedEmployee(NamedTuple):
         name: str
@@ -6634,15 +7332,15 @@ class A:
             class X(NamedTuple, A):
                 x: int
         with self.assertRaises(TypeError):
-            class X(NamedTuple, tuple):
+            class Y(NamedTuple, tuple):
                 x: int
         with self.assertRaises(TypeError):
-            class X(NamedTuple, NamedTuple):
+            class Z(NamedTuple, NamedTuple):
                 x: int
-        class A(NamedTuple):
+        class B(NamedTuple):
             x: int
         with self.assertRaises(TypeError):
-            class X(NamedTuple, A):
+            class C(NamedTuple, B):
                 y: str
 
     def test_generic(self):
@@ -6676,6 +7374,19 @@ class Y(Generic[T], NamedTuple):
                 with self.assertRaises(TypeError):
                     G[int, str]
 
+    def test_generic_pep695(self):
+        class X[T](NamedTuple):
+            x: T
+        T, = X.__type_params__
+        self.assertIsInstance(T, TypeVar)
+        self.assertEqual(T.__name__, 'T')
+        self.assertEqual(X.__bases__, (tuple, Generic))
+        self.assertEqual(X.__orig_bases__, (NamedTuple, Generic[T]))
+        self.assertEqual(X.__mro__, (X, tuple, Generic, object))
+        self.assertEqual(X.__parameters__, (T,))
+        self.assertEqual(X[str].__args__, (str,))
+        self.assertEqual(X[str].__parameters__, ())
+
     def test_non_generic_subscript(self):
         # For backward compatibility, subscription works
         # on arbitrary NamedTuple types.
@@ -6691,18 +7402,47 @@ class Group(NamedTuple):
         self.assertEqual(a, (1, [2]))
 
     def test_namedtuple_keyword_usage(self):
-        LocalEmployee = NamedTuple("LocalEmployee", name=str, age=int)
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            "Creating NamedTuple classes using keyword arguments is deprecated"
+        ):
+            LocalEmployee = NamedTuple("LocalEmployee", name=str, age=int)
+
         nick = LocalEmployee('Nick', 25)
         self.assertIsInstance(nick, tuple)
         self.assertEqual(nick.name, 'Nick')
         self.assertEqual(LocalEmployee.__name__, 'LocalEmployee')
         self.assertEqual(LocalEmployee._fields, ('name', 'age'))
         self.assertEqual(LocalEmployee.__annotations__, dict(name=str, age=int))
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "Either list of fields or keywords can be provided to NamedTuple, not both"
+        ):
             NamedTuple('Name', [('x', int)], y=str)
 
+        with self.assertRaisesRegex(
+            TypeError,
+            "Either list of fields or keywords can be provided to NamedTuple, not both"
+        ):
+            NamedTuple('Name', [], y=str)
+
+        with self.assertRaisesRegex(
+            TypeError,
+            (
+                r"Cannot pass `None` as the 'fields' parameter "
+                r"and also specify fields using keyword arguments"
+            )
+        ):
+            NamedTuple('Name', None, x=int)
+
     def test_namedtuple_special_keyword_names(self):
-        NT = NamedTuple("NT", cls=type, self=object, typename=str, fields=list)
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            "Creating NamedTuple classes using keyword arguments is deprecated"
+        ):
+            NT = NamedTuple("NT", cls=type, self=object, typename=str, fields=list)
+
         self.assertEqual(NT.__name__, 'NT')
         self.assertEqual(NT._fields, ('cls', 'self', 'typename', 'fields'))
         a = NT(cls=str, self=42, typename='foo', fields=[('bar', tuple)])
@@ -6712,12 +7452,32 @@ def test_namedtuple_special_keyword_names(self):
         self.assertEqual(a.fields, [('bar', tuple)])
 
     def test_empty_namedtuple(self):
-        NT = NamedTuple('NT')
+        expected_warning = re.escape(
+            "Failing to pass a value for the 'fields' parameter is deprecated "
+            "and will be disallowed in Python 3.15. "
+            "To create a NamedTuple class with 0 fields "
+            "using the functional syntax, "
+            "pass an empty list, e.g. `NT1 = NamedTuple('NT1', [])`."
+        )
+        with self.assertWarnsRegex(DeprecationWarning, fr"^{expected_warning}$"):
+            NT1 = NamedTuple('NT1')
+
+        expected_warning = re.escape(
+            "Passing `None` as the 'fields' parameter is deprecated "
+            "and will be disallowed in Python 3.15. "
+            "To create a NamedTuple class with 0 fields "
+            "using the functional syntax, "
+            "pass an empty list, e.g. `NT2 = NamedTuple('NT2', [])`."
+        )
+        with self.assertWarnsRegex(DeprecationWarning, fr"^{expected_warning}$"):
+            NT2 = NamedTuple('NT2', None)
+
+        NT3 = NamedTuple('NT2', [])
 
         class CNT(NamedTuple):
             pass  # empty body
 
-        for struct in [NT, CNT]:
+        for struct in NT1, NT2, NT3, CNT:
             with self.subTest(struct=struct):
                 self.assertEqual(struct._fields, ())
                 self.assertEqual(struct._field_defaults, {})
@@ -6727,13 +7487,29 @@ class CNT(NamedTuple):
     def test_namedtuple_errors(self):
         with self.assertRaises(TypeError):
             NamedTuple.__new__()
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "missing 1 required positional argument"
+        ):
             NamedTuple()
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "takes from 1 to 2 positional arguments but 3 were given"
+        ):
             NamedTuple('Emp', [('name', str)], None)
-        with self.assertRaises(ValueError):
+
+        with self.assertRaisesRegex(
+            ValueError,
+            "Field names cannot start with an underscore"
+        ):
             NamedTuple('Emp', [('_name', str)])
-        with self.assertRaises(TypeError):
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "missing 1 required positional argument: 'typename'"
+        ):
             NamedTuple(typename='Emp', name=str, id=int)
 
     def test_copy_and_pickle(self):
@@ -6772,6 +7548,83 @@ class GenericNamedTuple(NamedTuple, Generic[T]):
 
         self.assertEqual(CallNamedTuple.__orig_bases__, (NamedTuple,))
 
+    def test_setname_called_on_values_in_class_dictionary(self):
+        class Vanilla:
+            def __set_name__(self, owner, name):
+                self.name = name
+
+        class Foo(NamedTuple):
+            attr = Vanilla()
+
+        foo = Foo()
+        self.assertEqual(len(foo), 0)
+        self.assertNotIn('attr', Foo._fields)
+        self.assertIsInstance(foo.attr, Vanilla)
+        self.assertEqual(foo.attr.name, "attr")
+
+        class Bar(NamedTuple):
+            attr: Vanilla = Vanilla()
+
+        bar = Bar()
+        self.assertEqual(len(bar), 1)
+        self.assertIn('attr', Bar._fields)
+        self.assertIsInstance(bar.attr, Vanilla)
+        self.assertEqual(bar.attr.name, "attr")
+
+    def test_setname_raises_the_same_as_on_other_classes(self):
+        class CustomException(BaseException): pass
+
+        class Annoying:
+            def __set_name__(self, owner, name):
+                raise CustomException
+
+        annoying = Annoying()
+
+        with self.assertRaises(CustomException) as cm:
+            class NormalClass:
+                attr = annoying
+        normal_exception = cm.exception
+
+        with self.assertRaises(CustomException) as cm:
+            class NamedTupleClass(NamedTuple):
+                attr = annoying
+        namedtuple_exception = cm.exception
+
+        self.assertIs(type(namedtuple_exception), CustomException)
+        self.assertIs(type(namedtuple_exception), type(normal_exception))
+
+        self.assertEqual(len(namedtuple_exception.__notes__), 1)
+        self.assertEqual(
+            len(namedtuple_exception.__notes__), len(normal_exception.__notes__)
+        )
+
+        expected_note = (
+            "Error calling __set_name__ on 'Annoying' instance "
+            "'attr' in 'NamedTupleClass'"
+        )
+        self.assertEqual(namedtuple_exception.__notes__[0], expected_note)
+        self.assertEqual(
+            namedtuple_exception.__notes__[0],
+            normal_exception.__notes__[0].replace("NormalClass", "NamedTupleClass")
+        )
+
+    def test_strange_errors_when_accessing_set_name_itself(self):
+        class CustomException(Exception): pass
+
+        class Meta(type):
+            def __getattribute__(self, attr):
+                if attr == "__set_name__":
+                    raise CustomException
+                return object.__getattribute__(self, attr)
+
+        class VeryAnnoying(metaclass=Meta): pass
+
+        very_annoying = VeryAnnoying()
+
+        with self.assertRaises(CustomException):
+            class Foo(NamedTuple):
+                attr = very_annoying
+
 
 class TypedDictTests(BaseTestCase):
     def test_basics_functional_syntax(self):
@@ -6788,35 +7641,10 @@ def test_basics_functional_syntax(self):
         self.assertEqual(Emp.__bases__, (dict,))
         self.assertEqual(Emp.__annotations__, {'name': str, 'id': int})
         self.assertEqual(Emp.__total__, True)
-
-    def test_basics_keywords_syntax(self):
-        with self.assertWarns(DeprecationWarning):
-            Emp = TypedDict('Emp', name=str, id=int)
-        self.assertIsSubclass(Emp, dict)
-        self.assertIsSubclass(Emp, typing.MutableMapping)
-        self.assertNotIsSubclass(Emp, collections.abc.Sequence)
-        jim = Emp(name='Jim', id=1)
-        self.assertIs(type(jim), dict)
-        self.assertEqual(jim['name'], 'Jim')
-        self.assertEqual(jim['id'], 1)
-        self.assertEqual(Emp.__name__, 'Emp')
-        self.assertEqual(Emp.__module__, __name__)
-        self.assertEqual(Emp.__bases__, (dict,))
-        self.assertEqual(Emp.__annotations__, {'name': str, 'id': int})
-        self.assertEqual(Emp.__total__, True)
-
-    def test_typeddict_special_keyword_names(self):
-        with self.assertWarns(DeprecationWarning):
-            TD = TypedDict("TD", cls=type, self=object, typename=str, _typename=int, fields=list, _fields=dict)
-        self.assertEqual(TD.__name__, 'TD')
-        self.assertEqual(TD.__annotations__, {'cls': type, 'self': object, 'typename': str, '_typename': int, 'fields': list, '_fields': dict})
-        a = TD(cls=str, self=42, typename='foo', _typename=53, fields=[('bar', tuple)], _fields={'baz', set})
-        self.assertEqual(a['cls'], str)
-        self.assertEqual(a['self'], 42)
-        self.assertEqual(a['typename'], 'foo')
-        self.assertEqual(a['_typename'], 53)
-        self.assertEqual(a['fields'], [('bar', tuple)])
-        self.assertEqual(a['_fields'], {'baz', set})
+        self.assertEqual(Emp.__required_keys__, {'name', 'id'})
+        self.assertIsInstance(Emp.__required_keys__, frozenset)
+        self.assertEqual(Emp.__optional_keys__, set())
+        self.assertIsInstance(Emp.__optional_keys__, frozenset)
 
     def test_typeddict_create_errors(self):
         with self.assertRaises(TypeError):
@@ -6826,7 +7654,9 @@ def test_typeddict_create_errors(self):
         with self.assertRaises(TypeError):
             TypedDict('Emp', [('name', str)], None)
         with self.assertRaises(TypeError):
-            TypedDict(_typename='Emp', name=str, id=int)
+            TypedDict(_typename='Emp')
+        with self.assertRaises(TypeError):
+            TypedDict('Emp', name=str, id=int)
 
     def test_typeddict_errors(self):
         Emp = TypedDict('Emp', {'name': str, 'id': int})
@@ -6890,7 +7720,9 @@ def test_total(self):
         self.assertEqual(D(x=1), {'x': 1})
         self.assertEqual(D.__total__, False)
         self.assertEqual(D.__required_keys__, frozenset())
+        self.assertIsInstance(D.__required_keys__, frozenset)
         self.assertEqual(D.__optional_keys__, {'x'})
+        self.assertIsInstance(D.__optional_keys__, frozenset)
 
         self.assertEqual(Options(), {})
         self.assertEqual(Options(log_level=2), {'log_level': 2})
@@ -6898,12 +7730,25 @@ def test_total(self):
         self.assertEqual(Options.__required_keys__, frozenset())
         self.assertEqual(Options.__optional_keys__, {'log_level', 'log_path'})
 
+    def test_total_inherits_non_total(self):
+        class TD1(TypedDict, total=False):
+            a: int
+
+        self.assertIs(TD1.__total__, False)
+
+        class TD2(TD1):
+            b: str
+
+        self.assertIs(TD2.__total__, True)
+
     def test_optional_keys(self):
         class Point2Dor3D(Point2D, total=False):
             z: int
 
-        assert Point2Dor3D.__required_keys__ == frozenset(['x', 'y'])
-        assert Point2Dor3D.__optional_keys__ == frozenset(['z'])
+        self.assertEqual(Point2Dor3D.__required_keys__, frozenset(['x', 'y']))
+        self.assertIsInstance(Point2Dor3D.__required_keys__, frozenset)
+        self.assertEqual(Point2Dor3D.__optional_keys__, frozenset(['z']))
+        self.assertIsInstance(Point2Dor3D.__optional_keys__, frozenset)
 
     def test_keys_inheritance(self):
         class BaseAnimal(TypedDict):
@@ -6916,26 +7761,66 @@ class Animal(BaseAnimal, total=False):
         class Cat(Animal):
             fur_color: str
 
-        assert BaseAnimal.__required_keys__ == frozenset(['name'])
-        assert BaseAnimal.__optional_keys__ == frozenset([])
-        assert BaseAnimal.__annotations__ == {'name': str}
+        self.assertEqual(BaseAnimal.__required_keys__, frozenset(['name']))
+        self.assertEqual(BaseAnimal.__optional_keys__, frozenset([]))
+        self.assertEqual(BaseAnimal.__annotations__, {'name': str})
 
-        assert Animal.__required_keys__ == frozenset(['name'])
-        assert Animal.__optional_keys__ == frozenset(['tail', 'voice'])
-        assert Animal.__annotations__ == {
+        self.assertEqual(Animal.__required_keys__, frozenset(['name']))
+        self.assertEqual(Animal.__optional_keys__, frozenset(['tail', 'voice']))
+        self.assertEqual(Animal.__annotations__, {
             'name': str,
             'tail': bool,
             'voice': str,
-        }
+        })
 
-        assert Cat.__required_keys__ == frozenset(['name', 'fur_color'])
-        assert Cat.__optional_keys__ == frozenset(['tail', 'voice'])
-        assert Cat.__annotations__ == {
+        self.assertEqual(Cat.__required_keys__, frozenset(['name', 'fur_color']))
+        self.assertEqual(Cat.__optional_keys__, frozenset(['tail', 'voice']))
+        self.assertEqual(Cat.__annotations__, {
             'fur_color': str,
             'name': str,
             'tail': bool,
             'voice': str,
-        }
+        })
+
+    def test_keys_inheritance_with_same_name(self):
+        class NotTotal(TypedDict, total=False):
+            a: int
+
+        class Total(NotTotal):
+            a: int
+
+        self.assertEqual(NotTotal.__required_keys__, frozenset())
+        self.assertEqual(NotTotal.__optional_keys__, frozenset(['a']))
+        self.assertEqual(Total.__required_keys__, frozenset(['a']))
+        self.assertEqual(Total.__optional_keys__, frozenset())
+
+        class Base(TypedDict):
+            a: NotRequired[int]
+            b: Required[int]
+
+        class Child(Base):
+            a: Required[int]
+            b: NotRequired[int]
+
+        self.assertEqual(Base.__required_keys__, frozenset(['b']))
+        self.assertEqual(Base.__optional_keys__, frozenset(['a']))
+        self.assertEqual(Child.__required_keys__, frozenset(['a']))
+        self.assertEqual(Child.__optional_keys__, frozenset(['b']))
+
+    def test_multiple_inheritance_with_same_key(self):
+        class Base1(TypedDict):
+            a: NotRequired[int]
+
+        class Base2(TypedDict):
+            a: Required[str]
+
+        class Child(Base1, Base2):
+            pass
+
+        # Last base wins
+        self.assertEqual(Child.__annotations__, {'a': Required[str]})
+        self.assertEqual(Child.__required_keys__, frozenset(['a']))
+        self.assertEqual(Child.__optional_keys__, frozenset())
 
     def test_required_notrequired_keys(self):
         self.assertEqual(NontotalMovie.__required_keys__,
@@ -7061,10 +7946,29 @@ class Wrong(*bases):
                         pass
 
     def test_is_typeddict(self):
-        assert is_typeddict(Point2D) is True
-        assert is_typeddict(Union[str, int]) is False
+        self.assertIs(is_typeddict(Point2D), True)
+        self.assertIs(is_typeddict(Union[str, int]), False)
         # classes, not instances
-        assert is_typeddict(Point2D()) is False
+        self.assertIs(is_typeddict(Point2D()), False)
+        call_based = TypedDict('call_based', {'a': int})
+        self.assertIs(is_typeddict(call_based), True)
+        self.assertIs(is_typeddict(call_based()), False)
+
+        T = TypeVar("T")
+        class BarGeneric(TypedDict, Generic[T]):
+            a: T
+        self.assertIs(is_typeddict(BarGeneric), True)
+        self.assertIs(is_typeddict(BarGeneric[int]), False)
+        self.assertIs(is_typeddict(BarGeneric()), False)
+
+        class NewGeneric[T](TypedDict):
+            a: T
+        self.assertIs(is_typeddict(NewGeneric), True)
+        self.assertIs(is_typeddict(NewGeneric[int]), False)
+        self.assertIs(is_typeddict(NewGeneric()), False)
+
+        # The TypedDict constructor is not itself a TypedDict
+        self.assertIs(is_typeddict(TypedDict), False)
 
     def test_get_type_hints(self):
         self.assertEqual(
@@ -7086,6 +7990,20 @@ class FooBarGeneric(BarGeneric[int]):
             {'a': typing.Optional[T], 'b': int, 'c': str}
         )
 
+    def test_pep695_generic_typeddict(self):
+        class A[T](TypedDict):
+            a: T
+
+        T, = A.__type_params__
+        self.assertIsInstance(T, TypeVar)
+        self.assertEqual(T.__name__, 'T')
+        self.assertEqual(A.__bases__, (Generic, dict))
+        self.assertEqual(A.__orig_bases__, (TypedDict, Generic[T]))
+        self.assertEqual(A.__mro__, (A, Generic, dict, object))
+        self.assertEqual(A.__parameters__, (T,))
+        self.assertEqual(A[str].__parameters__, ())
+        self.assertEqual(A[str].__args__, (str,))
+
     def test_generic_inheritance(self):
         class A(TypedDict, Generic[T]):
             a: T
@@ -7132,11 +8050,11 @@ class C(B[int]):
         self.assertEqual(C.__total__, True)
         self.assertEqual(C.__optional_keys__, frozenset(['b']))
         self.assertEqual(C.__required_keys__, frozenset(['a', 'c']))
-        assert C.__annotations__ == {
+        self.assertEqual(C.__annotations__, {
             'a': T,
             'b': KT,
             'c': int,
-        }
+        })
         with self.assertRaises(TypeError):
             C[str]
 
@@ -7151,11 +8069,11 @@ class Point3D(Point2DGeneric[T], Generic[T, KT]):
         self.assertEqual(Point3D.__total__, True)
         self.assertEqual(Point3D.__optional_keys__, frozenset())
         self.assertEqual(Point3D.__required_keys__, frozenset(['a', 'b', 'c']))
-        assert Point3D.__annotations__ == {
+        self.assertEqual(Point3D.__annotations__, {
             'a': T,
             'b': T,
             'c': KT,
-        }
+        })
         self.assertEqual(Point3D[int, str].__origin__, Point3D)
 
         with self.assertRaises(TypeError):
@@ -7182,11 +8100,11 @@ class WithImplicitAny(B):
         self.assertEqual(WithImplicitAny.__total__, True)
         self.assertEqual(WithImplicitAny.__optional_keys__, frozenset(['b']))
         self.assertEqual(WithImplicitAny.__required_keys__, frozenset(['a', 'c']))
-        assert WithImplicitAny.__annotations__ == {
+        self.assertEqual(WithImplicitAny.__annotations__, {
             'a': T,
             'b': KT,
             'c': int,
-        }
+        })
         with self.assertRaises(TypeError):
             WithImplicitAny[str]
 
@@ -7246,6 +8164,40 @@ class MultipleGenericBases(GenericParent[int], GenericParent[float]):
         self.assertEqual(MultipleGenericBases.__orig_bases__, (GenericParent[int], GenericParent[float]))
         self.assertEqual(CallTypedDict.__orig_bases__, (TypedDict,))
 
+    def test_zero_fields_typeddicts(self):
+        T1 = TypedDict("T1", {})
+        class T2(TypedDict): pass
+        class T3[tvar](TypedDict): pass
+        S = TypeVar("S")
+        class T4(TypedDict, Generic[S]): pass
+
+        expected_warning = re.escape(
+            "Failing to pass a value for the 'fields' parameter is deprecated "
+            "and will be disallowed in Python 3.15. "
+            "To create a TypedDict class with 0 fields "
+            "using the functional syntax, "
+            "pass an empty dictionary, e.g. `T5 = TypedDict('T5', {})`."
+        )
+        with self.assertWarnsRegex(DeprecationWarning, fr"^{expected_warning}$"):
+            T5 = TypedDict('T5')
+
+        expected_warning = re.escape(
+            "Passing `None` as the 'fields' parameter is deprecated "
+            "and will be disallowed in Python 3.15. "
+            "To create a TypedDict class with 0 fields "
+            "using the functional syntax, "
+            "pass an empty dictionary, e.g. `T6 = TypedDict('T6', {})`."
+        )
+        with self.assertWarnsRegex(DeprecationWarning, fr"^{expected_warning}$"):
+            T6 = TypedDict('T6', None)
+
+        for klass in T1, T2, T3, T4, T5, T6:
+            with self.subTest(klass=klass.__name__):
+                self.assertEqual(klass.__annotations__, {})
+                self.assertEqual(klass.__required_keys__, set())
+                self.assertEqual(klass.__optional_keys__, set())
+                self.assertIsInstance(klass(), dict)
+
 
 class RequiredTests(BaseTestCase):
 
@@ -7269,15 +8221,15 @@ def test_cannot_subclass(self):
             class C(type(Required)):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(Required[int])):
+            class D(type(Required[int])):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.Required'):
-            class C(Required):
+            class E(Required):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.Required\[int\]'):
-            class C(Required[int]):
+            class F(Required[int]):
                 pass
 
     def test_cannot_init(self):
@@ -7317,15 +8269,15 @@ def test_cannot_subclass(self):
             class C(type(NotRequired)):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(NotRequired[int])):
+            class D(type(NotRequired[int])):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.NotRequired'):
-            class C(NotRequired):
+            class E(NotRequired):
                 pass
         with self.assertRaisesRegex(TypeError,
                 r'Cannot subclass typing\.NotRequired\[int\]'):
-            class C(NotRequired[int]):
+            class F(NotRequired[int]):
                 pass
 
     def test_cannot_init(self):
@@ -7369,17 +8321,6 @@ def stuff(a: BinaryIO) -> bytes:
         a = stuff.__annotations__['a']
         self.assertEqual(a.__parameters__, ())
 
-    def test_io_submodule(self):
-        with warnings.catch_warnings(record=True) as w:
-            warnings.filterwarnings("default", category=DeprecationWarning)
-            from typing.io import IO, TextIO, BinaryIO, __all__, __name__
-            self.assertIs(IO, typing.IO)
-            self.assertIs(TextIO, typing.TextIO)
-            self.assertIs(BinaryIO, typing.BinaryIO)
-            self.assertEqual(set(__all__), set(['IO', 'TextIO', 'BinaryIO']))
-            self.assertEqual(__name__, 'typing.io')
-            self.assertEqual(len(w), 1)
-
 
 class RETests(BaseTestCase):
     # Much of this is really testing _TypeAlias.
@@ -7424,16 +8365,6 @@ def test_repr(self):
         self.assertEqual(repr(Match[str]), 'typing.Match[str]')
         self.assertEqual(repr(Match[bytes]), 'typing.Match[bytes]')
 
-    def test_re_submodule(self):
-        with warnings.catch_warnings(record=True) as w:
-            warnings.filterwarnings("default", category=DeprecationWarning)
-            from typing.re import Match, Pattern, __all__, __name__
-            self.assertIs(Match, typing.Match)
-            self.assertIs(Pattern, typing.Pattern)
-            self.assertEqual(set(__all__), set(['Match', 'Pattern']))
-            self.assertEqual(__name__, 'typing.re')
-            self.assertEqual(len(w), 1)
-
     def test_cannot_subclass(self):
         with self.assertRaisesRegex(
             TypeError,
@@ -7445,7 +8376,7 @@ class A(typing.Match):
             TypeError,
             r"type 're\.Pattern' is not an acceptable base type",
         ):
-            class A(typing.Pattern):
+            class B(typing.Pattern):
                 pass
 
 
@@ -7453,8 +8384,7 @@ class AnnotatedTests(BaseTestCase):
 
     def test_new(self):
         with self.assertRaisesRegex(
-            TypeError,
-            'Type Annotated cannot be instantiated',
+            TypeError, 'Cannot instantiate typing.Annotated',
         ):
             Annotated()
 
@@ -7758,6 +8688,40 @@ class X(Annotated[int, (1, 10)]): ...
         self.assertEqual(X.__mro__, (X, int, object),
                          "Annotated should be transparent.")
 
+    def test_annotated_cached_with_types(self):
+        class A(str): ...
+        class B(str): ...
+
+        field_a1 = Annotated[str, A("X")]
+        field_a2 = Annotated[str, B("X")]
+        a1_metadata = field_a1.__metadata__[0]
+        a2_metadata = field_a2.__metadata__[0]
+
+        self.assertIs(type(a1_metadata), A)
+        self.assertEqual(a1_metadata, A("X"))
+        self.assertIs(type(a2_metadata), B)
+        self.assertEqual(a2_metadata, B("X"))
+        self.assertIsNot(type(a1_metadata), type(a2_metadata))
+
+        field_b1 = Annotated[str, A("Y")]
+        field_b2 = Annotated[str, B("Y")]
+        b1_metadata = field_b1.__metadata__[0]
+        b2_metadata = field_b2.__metadata__[0]
+
+        self.assertIs(type(b1_metadata), A)
+        self.assertEqual(b1_metadata, A("Y"))
+        self.assertIs(type(b2_metadata), B)
+        self.assertEqual(b2_metadata, B("Y"))
+        self.assertIsNot(type(b1_metadata), type(b2_metadata))
+
+        field_c1 = Annotated[int, 1]
+        field_c2 = Annotated[int, 1.0]
+        field_c3 = Annotated[int, True]
+
+        self.assertIs(type(field_c1.__metadata__[0]), int)
+        self.assertIs(type(field_c2.__metadata__[0]), float)
+        self.assertIs(type(field_c3.__metadata__[0]), bool)
+
 
 class TypeAliasTests(BaseTestCase):
     def test_canonical_usage_with_variable_annotation(self):
@@ -7793,7 +8757,7 @@ class C(TypeAlias):
                 pass
 
         with self.assertRaises(TypeError):
-            class C(type(TypeAlias)):
+            class D(type(TypeAlias)):
                 pass
 
     def test_repr(self):
@@ -7810,6 +8774,16 @@ def test_basic_plain(self):
         P = ParamSpec('P')
         self.assertEqual(P, P)
         self.assertIsInstance(P, ParamSpec)
+        self.assertEqual(P.__name__, 'P')
+        self.assertEqual(P.__module__, __name__)
+
+    def test_basic_with_exec(self):
+        ns = {}
+        exec('from typing import ParamSpec; P = ParamSpec("P")', ns, ns)
+        P = ns['P']
+        self.assertIsInstance(P, ParamSpec)
+        self.assertEqual(P.__name__, 'P')
+        self.assertIs(P.__module__, None)
 
     def test_valid_uses(self):
         P = ParamSpec('P')
@@ -8170,22 +9144,22 @@ def test_paramspec_gets_copied(self):
         self.assertEqual(C2[Concatenate[T, P2]].__parameters__, (T, P2))
 
     def test_cannot_subclass(self):
-        with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
+        with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'ParamSpec'):
             class C(ParamSpec): pass
-        with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(ParamSpecArgs): pass
-        with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(ParamSpecKwargs): pass
+        with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'ParamSpecArgs'):
+            class D(ParamSpecArgs): pass
+        with self.assertRaisesRegex(TypeError, NOT_A_BASE_TYPE % 'ParamSpecKwargs'):
+            class E(ParamSpecKwargs): pass
         P = ParamSpec('P')
         with self.assertRaisesRegex(TypeError,
                 CANNOT_SUBCLASS_INSTANCE % 'ParamSpec'):
-            class C(P): pass
+            class F(P): pass
         with self.assertRaisesRegex(TypeError,
                 CANNOT_SUBCLASS_INSTANCE % 'ParamSpecArgs'):
-            class C(P.args): pass
+            class G(P.args): pass
         with self.assertRaisesRegex(TypeError,
                 CANNOT_SUBCLASS_INSTANCE % 'ParamSpecKwargs'):
-            class C(P.kwargs): pass
+            class H(P.kwargs): pass
 
 
 class ConcatenateTests(BaseTestCase):
@@ -8266,15 +9240,15 @@ def test_cannot_subclass(self):
             class C(type(TypeGuard)):
                 pass
         with self.assertRaisesRegex(TypeError, CANNOT_SUBCLASS_TYPE):
-            class C(type(TypeGuard[int])):
+            class D(type(TypeGuard[int])):
                 pass
         with self.assertRaisesRegex(TypeError,
                                     r'Cannot subclass typing\.TypeGuard'):
-            class C(TypeGuard):
+            class E(TypeGuard):
                 pass
         with self.assertRaisesRegex(TypeError,
                                     r'Cannot subclass typing\.TypeGuard\[int\]'):
-            class C(TypeGuard[int]):
+            class F(TypeGuard[int]):
                 pass
 
     def test_cannot_init(self):
@@ -8604,7 +9578,7 @@ def test_all(self):
         # Context managers.
         self.assertIn('ContextManager', a)
         self.assertIn('AsyncContextManager', a)
-        # Check that io and re are not exported.
+        # Check that former namespaces io and re are not exported.
         self.assertNotIn('io', a)
         self.assertNotIn('re', a)
         # Spot-check that stdlib modules aren't exported.
@@ -8617,6 +9591,10 @@ def test_all(self):
         self.assertIn('SupportsComplex', a)
 
     def test_all_exported_names(self):
+        # ensure all dynamically created objects are actualised
+        for name in typing.__all__:
+            getattr(typing, name)
+
         actual_all = set(typing.__all__)
         computed_all = {
             k for k, v in vars(typing).items()
@@ -8624,7 +9602,6 @@ def test_all_exported_names(self):
             if k in actual_all or (
                 # avoid private names
                 not k.startswith('_') and
-                k not in {'io', 're'} and
                 # there's a few types and metaclasses that aren't exported
                 not k.endswith(('Meta', '_contra', '_co')) and
                 not k.upper() == k and
@@ -8667,5 +9644,11 @@ def test_is_not_instance_of_iterable(self):
             self.assertNotIsInstance(type_to_test, collections.abc.Iterable)
 
 
+def load_tests(loader, tests, pattern):
+    import doctest
+    tests.addTests(doctest.DocTestSuite(typing))
+    return tests
+
+
 if __name__ == '__main__':
     main()
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
deleted file mode 100644
index 4ebbb9d32a3d75..00000000000000
--- a/Lib/test/test_unicode.py
+++ /dev/null
@@ -1,2728 +0,0 @@
-""" Test script for the Unicode implementation.
-
-Written by Marc-Andre Lemburg (mal@lemburg.com).
-
-(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
-
-"""
-import _string
-import codecs
-import itertools
-import operator
-import pickle
-import struct
-import sys
-import textwrap
-import unicodedata
-import unittest
-import warnings
-from test.support import warnings_helper
-from test import support, string_tests
-from test.support.script_helper import assert_python_failure
-
-try:
-    import _testcapi
-except ImportError:
-    _testcapi = None
-
-# Error handling (bad decoder return)
-def search_function(encoding):
-    def decode1(input, errors="strict"):
-        return 42 # not a tuple
-    def encode1(input, errors="strict"):
-        return 42 # not a tuple
-    def encode2(input, errors="strict"):
-        return (42, 42) # no unicode
-    def decode2(input, errors="strict"):
-        return (42, 42) # no unicode
-    if encoding=="test.unicode1":
-        return (encode1, decode1, None, None)
-    elif encoding=="test.unicode2":
-        return (encode2, decode2, None, None)
-    else:
-        return None
-
-def duplicate_string(text):
-    """
-    Try to get a fresh clone of the specified text:
-    new object with a reference count of 1.
-
-    This is a best-effort: latin1 single letters and the empty
-    string ('') are singletons and cannot be cloned.
-    """
-    return text.encode().decode()
-
-class StrSubclass(str):
-    pass
-
-class UnicodeTest(string_tests.CommonTest,
-        string_tests.MixinStrUnicodeUserStringTest,
-        string_tests.MixinStrUnicodeTest,
-        unittest.TestCase):
-
-    type2test = str
-
-    def setUp(self):
-        codecs.register(search_function)
-        self.addCleanup(codecs.unregister, search_function)
-
-    def checkequalnofix(self, result, object, methodname, *args):
-        method = getattr(object, methodname)
-        realresult = method(*args)
-        self.assertEqual(realresult, result)
-        self.assertTrue(type(realresult) is type(result))
-
-        # if the original is returned make sure that
-        # this doesn't happen with subclasses
-        if realresult is object:
-            class usub(str):
-                def __repr__(self):
-                    return 'usub(%r)' % str.__repr__(self)
-            object = usub(object)
-            method = getattr(object, methodname)
-            realresult = method(*args)
-            self.assertEqual(realresult, result)
-            self.assertTrue(object is not realresult)
-
-    def test_literals(self):
-        self.assertEqual('\xff', '\u00ff')
-        self.assertEqual('\uffff', '\U0000ffff')
-        self.assertRaises(SyntaxError, eval, '\'\\Ufffffffe\'')
-        self.assertRaises(SyntaxError, eval, '\'\\Uffffffff\'')
-        self.assertRaises(SyntaxError, eval, '\'\\U%08x\'' % 0x110000)
-        # raw strings should not have unicode escapes
-        self.assertNotEqual(r"\u0020", " ")
-
-    def test_ascii(self):
-        self.assertEqual(ascii('abc'), "'abc'")
-        self.assertEqual(ascii('ab\\c'), "'ab\\\\c'")
-        self.assertEqual(ascii('ab\\'), "'ab\\\\'")
-        self.assertEqual(ascii('\\c'), "'\\\\c'")
-        self.assertEqual(ascii('\\'), "'\\\\'")
-        self.assertEqual(ascii('\n'), "'\\n'")
-        self.assertEqual(ascii('\r'), "'\\r'")
-        self.assertEqual(ascii('\t'), "'\\t'")
-        self.assertEqual(ascii('\b'), "'\\x08'")
-        self.assertEqual(ascii("'\""), """'\\'"'""")
-        self.assertEqual(ascii("'\""), """'\\'"'""")
-        self.assertEqual(ascii("'"), '''"'"''')
-        self.assertEqual(ascii('"'), """'"'""")
-        latin1repr = (
-            "'\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\t\\n\\x0b\\x0c\\r"
-            "\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a"
-            "\\x1b\\x1c\\x1d\\x1e\\x1f !\"#$%&\\'()*+,-./0123456789:;<=>?@ABCDEFGHI"
-            "JKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\\x7f"
-            "\\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\\x88\\x89\\x8a\\x8b\\x8c\\x8d"
-            "\\x8e\\x8f\\x90\\x91\\x92\\x93\\x94\\x95\\x96\\x97\\x98\\x99\\x9a\\x9b"
-            "\\x9c\\x9d\\x9e\\x9f\\xa0\\xa1\\xa2\\xa3\\xa4\\xa5\\xa6\\xa7\\xa8\\xa9"
-            "\\xaa\\xab\\xac\\xad\\xae\\xaf\\xb0\\xb1\\xb2\\xb3\\xb4\\xb5\\xb6\\xb7"
-            "\\xb8\\xb9\\xba\\xbb\\xbc\\xbd\\xbe\\xbf\\xc0\\xc1\\xc2\\xc3\\xc4\\xc5"
-            "\\xc6\\xc7\\xc8\\xc9\\xca\\xcb\\xcc\\xcd\\xce\\xcf\\xd0\\xd1\\xd2\\xd3"
-            "\\xd4\\xd5\\xd6\\xd7\\xd8\\xd9\\xda\\xdb\\xdc\\xdd\\xde\\xdf\\xe0\\xe1"
-            "\\xe2\\xe3\\xe4\\xe5\\xe6\\xe7\\xe8\\xe9\\xea\\xeb\\xec\\xed\\xee\\xef"
-            "\\xf0\\xf1\\xf2\\xf3\\xf4\\xf5\\xf6\\xf7\\xf8\\xf9\\xfa\\xfb\\xfc\\xfd"
-            "\\xfe\\xff'")
-        testrepr = ascii(''.join(map(chr, range(256))))
-        self.assertEqual(testrepr, latin1repr)
-        # Test ascii works on wide unicode escapes without overflow.
-        self.assertEqual(ascii("\U00010000" * 39 + "\uffff" * 4096),
-                            ascii("\U00010000" * 39 + "\uffff" * 4096))
-
-        class WrongRepr:
-            def __repr__(self):
-                return b'byte-repr'
-        self.assertRaises(TypeError, ascii, WrongRepr())
-
-    def test_repr(self):
-        # Test basic sanity of repr()
-        self.assertEqual(repr('abc'), "'abc'")
-        self.assertEqual(repr('ab\\c'), "'ab\\\\c'")
-        self.assertEqual(repr('ab\\'), "'ab\\\\'")
-        self.assertEqual(repr('\\c'), "'\\\\c'")
-        self.assertEqual(repr('\\'), "'\\\\'")
-        self.assertEqual(repr('\n'), "'\\n'")
-        self.assertEqual(repr('\r'), "'\\r'")
-        self.assertEqual(repr('\t'), "'\\t'")
-        self.assertEqual(repr('\b'), "'\\x08'")
-        self.assertEqual(repr("'\""), """'\\'"'""")
-        self.assertEqual(repr("'\""), """'\\'"'""")
-        self.assertEqual(repr("'"), '''"'"''')
-        self.assertEqual(repr('"'), """'"'""")
-        latin1repr = (
-            "'\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\t\\n\\x0b\\x0c\\r"
-            "\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a"
-            "\\x1b\\x1c\\x1d\\x1e\\x1f !\"#$%&\\'()*+,-./0123456789:;<=>?@ABCDEFGHI"
-            "JKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\\x7f"
-            "\\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\\x88\\x89\\x8a\\x8b\\x8c\\x8d"
-            "\\x8e\\x8f\\x90\\x91\\x92\\x93\\x94\\x95\\x96\\x97\\x98\\x99\\x9a\\x9b"
-            "\\x9c\\x9d\\x9e\\x9f\\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9"
-            "\xaa\xab\xac\\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7"
-            "\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5"
-            "\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3"
-            "\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1"
-            "\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
-            "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd"
-            "\xfe\xff'")
-        testrepr = repr(''.join(map(chr, range(256))))
-        self.assertEqual(testrepr, latin1repr)
-        # Test repr works on wide unicode escapes without overflow.
-        self.assertEqual(repr("\U00010000" * 39 + "\uffff" * 4096),
-                            repr("\U00010000" * 39 + "\uffff" * 4096))
-
-        class WrongRepr:
-            def __repr__(self):
-                return b'byte-repr'
-        self.assertRaises(TypeError, repr, WrongRepr())
-
-    def test_iterators(self):
-        # Make sure unicode objects have an __iter__ method
-        it = "\u1111\u2222\u3333".__iter__()
-        self.assertEqual(next(it), "\u1111")
-        self.assertEqual(next(it), "\u2222")
-        self.assertEqual(next(it), "\u3333")
-        self.assertRaises(StopIteration, next, it)
-
-    def test_iterators_invocation(self):
-        cases = [type(iter('abc')), type(iter('🚀'))]
-        for cls in cases:
-            with self.subTest(cls=cls):
-                self.assertRaises(TypeError, cls)
-
-    def test_iteration(self):
-        cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
-        for case in cases:
-            with self.subTest(string=case):
-                self.assertEqual(case, "".join(iter(case)))
-
-    def test_exhausted_iterator(self):
-        cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
-        for case in cases:
-            with self.subTest(case=case):
-                iterator = iter(case)
-                tuple(iterator)
-                self.assertRaises(StopIteration, next, iterator)
-
-    def test_pickle_iterator(self):
-        cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
-        for case in cases:
-            with self.subTest(case=case):
-                for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-                    it = iter(case)
-                    with self.subTest(proto=proto):
-                        pickled = "".join(pickle.loads(pickle.dumps(it, proto)))
-                        self.assertEqual(case, pickled)
-
-    def test_count(self):
-        string_tests.CommonTest.test_count(self)
-        # check mixed argument types
-        self.checkequalnofix(3,  'aaa', 'count', 'a')
-        self.checkequalnofix(0,  'aaa', 'count', 'b')
-        self.checkequalnofix(3, 'aaa', 'count',  'a')
-        self.checkequalnofix(0, 'aaa', 'count',  'b')
-        self.checkequalnofix(0, 'aaa', 'count',  'b')
-        self.checkequalnofix(1, 'aaa', 'count',  'a', -1)
-        self.checkequalnofix(3, 'aaa', 'count',  'a', -10)
-        self.checkequalnofix(2, 'aaa', 'count',  'a', 0, -1)
-        self.checkequalnofix(0, 'aaa', 'count',  'a', 0, -10)
-        # test mixed kinds
-        self.checkequal(10, '\u0102' + 'a' * 10, 'count', 'a')
-        self.checkequal(10, '\U00100304' + 'a' * 10, 'count', 'a')
-        self.checkequal(10, '\U00100304' + '\u0102' * 10, 'count', '\u0102')
-        self.checkequal(0, 'a' * 10, 'count', '\u0102')
-        self.checkequal(0, 'a' * 10, 'count', '\U00100304')
-        self.checkequal(0, '\u0102' * 10, 'count', '\U00100304')
-        self.checkequal(10, '\u0102' + 'a_' * 10, 'count', 'a_')
-        self.checkequal(10, '\U00100304' + 'a_' * 10, 'count', 'a_')
-        self.checkequal(10, '\U00100304' + '\u0102_' * 10, 'count', '\u0102_')
-        self.checkequal(0, 'a' * 10, 'count', 'a\u0102')
-        self.checkequal(0, 'a' * 10, 'count', 'a\U00100304')
-        self.checkequal(0, '\u0102' * 10, 'count', '\u0102\U00100304')
-        # test subclass
-        class MyStr(str):
-            pass
-        self.checkequal(3, MyStr('aaa'), 'count', 'a')
-
-    def test_find(self):
-        string_tests.CommonTest.test_find(self)
-        # test implementation details of the memchr fast path
-        self.checkequal(100, 'a' * 100 + '\u0102', 'find', '\u0102')
-        self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0201')
-        self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0120')
-        self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0220')
-        self.checkequal(100, 'a' * 100 + '\U00100304', 'find', '\U00100304')
-        self.checkequal(-1, 'a' * 100 + '\U00100304', 'find', '\U00100204')
-        self.checkequal(-1, 'a' * 100 + '\U00100304', 'find', '\U00102004')
-        # check mixed argument types
-        self.checkequalnofix(0,  'abcdefghiabc', 'find', 'abc')
-        self.checkequalnofix(9,  'abcdefghiabc', 'find', 'abc', 1)
-        self.checkequalnofix(-1, 'abcdefghiabc', 'find', 'def', 4)
-
-        # test utf-8 non-ascii char
-        self.checkequal(0, 'те�т', 'find', 'т')
-        self.checkequal(3, 'те�т', 'find', 'т', 1)
-        self.checkequal(-1, 'те�т', 'find', 'т', 1, 3)
-        self.checkequal(-1, 'те�т', 'find', 'e')  # english `e`
-        # test utf-8 non-ascii slice
-        self.checkequal(1, 'те�т те�т', 'find', 'е�')
-        self.checkequal(1, 'те�т те�т', 'find', 'е�', 1)
-        self.checkequal(1, 'те�т те�т', 'find', 'е�', 1, 3)
-        self.checkequal(6, 'те�т те�т', 'find', 'е�', 2)
-        self.checkequal(-1, 'те�т те�т', 'find', 'е�', 6, 7)
-        self.checkequal(-1, 'те�т те�т', 'find', 'е�', 7)
-        self.checkequal(-1, 'те�т те�т', 'find', 'ec')  # english `ec`
-
-        self.assertRaises(TypeError, 'hello'.find)
-        self.assertRaises(TypeError, 'hello'.find, 42)
-        # test mixed kinds
-        self.checkequal(100, '\u0102' * 100 + 'a', 'find', 'a')
-        self.checkequal(100, '\U00100304' * 100 + 'a', 'find', 'a')
-        self.checkequal(100, '\U00100304' * 100 + '\u0102', 'find', '\u0102')
-        self.checkequal(-1, 'a' * 100, 'find', '\u0102')
-        self.checkequal(-1, 'a' * 100, 'find', '\U00100304')
-        self.checkequal(-1, '\u0102' * 100, 'find', '\U00100304')
-        self.checkequal(100, '\u0102' * 100 + 'a_', 'find', 'a_')
-        self.checkequal(100, '\U00100304' * 100 + 'a_', 'find', 'a_')
-        self.checkequal(100, '\U00100304' * 100 + '\u0102_', 'find', '\u0102_')
-        self.checkequal(-1, 'a' * 100, 'find', 'a\u0102')
-        self.checkequal(-1, 'a' * 100, 'find', 'a\U00100304')
-        self.checkequal(-1, '\u0102' * 100, 'find', '\u0102\U00100304')
-
-    def test_rfind(self):
-        string_tests.CommonTest.test_rfind(self)
-        # test implementation details of the memrchr fast path
-        self.checkequal(0, '\u0102' + 'a' * 100 , 'rfind', '\u0102')
-        self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0201')
-        self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0120')
-        self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0220')
-        self.checkequal(0, '\U00100304' + 'a' * 100, 'rfind', '\U00100304')
-        self.checkequal(-1, '\U00100304' + 'a' * 100, 'rfind', '\U00100204')
-        self.checkequal(-1, '\U00100304' + 'a' * 100, 'rfind', '\U00102004')
-        # check mixed argument types
-        self.checkequalnofix(9,   'abcdefghiabc', 'rfind', 'abc')
-        self.checkequalnofix(12,  'abcdefghiabc', 'rfind', '')
-        self.checkequalnofix(12, 'abcdefghiabc', 'rfind',  '')
-        # test utf-8 non-ascii char
-        self.checkequal(1, 'те�т', 'rfind', 'е')
-        self.checkequal(1, 'те�т', 'rfind', 'е', 1)
-        self.checkequal(-1, 'те�т', 'rfind', 'е', 2)
-        self.checkequal(-1, 'те�т', 'rfind', 'e')  # english `e`
-        # test utf-8 non-ascii slice
-        self.checkequal(6, 'те�т те�т', 'rfind', 'е�')
-        self.checkequal(6, 'те�т те�т', 'rfind', 'е�', 1)
-        self.checkequal(1, 'те�т те�т', 'rfind', 'е�', 1, 3)
-        self.checkequal(6, 'те�т те�т', 'rfind', 'е�', 2)
-        self.checkequal(-1, 'те�т те�т', 'rfind', 'е�', 6, 7)
-        self.checkequal(-1, 'те�т те�т', 'rfind', 'е�', 7)
-        self.checkequal(-1, 'те�т те�т', 'rfind', 'ec')  # english `ec`
-        # test mixed kinds
-        self.checkequal(0, 'a' + '\u0102' * 100, 'rfind', 'a')
-        self.checkequal(0, 'a' + '\U00100304' * 100, 'rfind', 'a')
-        self.checkequal(0, '\u0102' + '\U00100304' * 100, 'rfind', '\u0102')
-        self.checkequal(-1, 'a' * 100, 'rfind', '\u0102')
-        self.checkequal(-1, 'a' * 100, 'rfind', '\U00100304')
-        self.checkequal(-1, '\u0102' * 100, 'rfind', '\U00100304')
-        self.checkequal(0, '_a' + '\u0102' * 100, 'rfind', '_a')
-        self.checkequal(0, '_a' + '\U00100304' * 100, 'rfind', '_a')
-        self.checkequal(0, '_\u0102' + '\U00100304' * 100, 'rfind', '_\u0102')
-        self.checkequal(-1, 'a' * 100, 'rfind', '\u0102a')
-        self.checkequal(-1, 'a' * 100, 'rfind', '\U00100304a')
-        self.checkequal(-1, '\u0102' * 100, 'rfind', '\U00100304\u0102')
-
-    def test_index(self):
-        string_tests.CommonTest.test_index(self)
-        self.checkequalnofix(0, 'abcdefghiabc', 'index',  '')
-        self.checkequalnofix(3, 'abcdefghiabc', 'index',  'def')
-        self.checkequalnofix(0, 'abcdefghiabc', 'index',  'abc')
-        self.checkequalnofix(9, 'abcdefghiabc', 'index',  'abc', 1)
-        self.assertRaises(ValueError, 'abcdefghiabc'.index, 'hib')
-        self.assertRaises(ValueError, 'abcdefghiab'.index,  'abc', 1)
-        self.assertRaises(ValueError, 'abcdefghi'.index,  'ghi', 8)
-        self.assertRaises(ValueError, 'abcdefghi'.index,  'ghi', -1)
-        # test mixed kinds
-        self.checkequal(100, '\u0102' * 100 + 'a', 'index', 'a')
-        self.checkequal(100, '\U00100304' * 100 + 'a', 'index', 'a')
-        self.checkequal(100, '\U00100304' * 100 + '\u0102', 'index', '\u0102')
-        self.assertRaises(ValueError, ('a' * 100).index, '\u0102')
-        self.assertRaises(ValueError, ('a' * 100).index, '\U00100304')
-        self.assertRaises(ValueError, ('\u0102' * 100).index, '\U00100304')
-        self.checkequal(100, '\u0102' * 100 + 'a_', 'index', 'a_')
-        self.checkequal(100, '\U00100304' * 100 + 'a_', 'index', 'a_')
-        self.checkequal(100, '\U00100304' * 100 + '\u0102_', 'index', '\u0102_')
-        self.assertRaises(ValueError, ('a' * 100).index, 'a\u0102')
-        self.assertRaises(ValueError, ('a' * 100).index, 'a\U00100304')
-        self.assertRaises(ValueError, ('\u0102' * 100).index, '\u0102\U00100304')
-
-    def test_rindex(self):
-        string_tests.CommonTest.test_rindex(self)
-        self.checkequalnofix(12, 'abcdefghiabc', 'rindex',  '')
-        self.checkequalnofix(3,  'abcdefghiabc', 'rindex',  'def')
-        self.checkequalnofix(9,  'abcdefghiabc', 'rindex',  'abc')
-        self.checkequalnofix(0,  'abcdefghiabc', 'rindex',  'abc', 0, -1)
-
-        self.assertRaises(ValueError, 'abcdefghiabc'.rindex,  'hib')
-        self.assertRaises(ValueError, 'defghiabc'.rindex,  'def', 1)
-        self.assertRaises(ValueError, 'defghiabc'.rindex,  'abc', 0, -1)
-        self.assertRaises(ValueError, 'abcdefghi'.rindex,  'ghi', 0, 8)
-        self.assertRaises(ValueError, 'abcdefghi'.rindex,  'ghi', 0, -1)
-        # test mixed kinds
-        self.checkequal(0, 'a' + '\u0102' * 100, 'rindex', 'a')
-        self.checkequal(0, 'a' + '\U00100304' * 100, 'rindex', 'a')
-        self.checkequal(0, '\u0102' + '\U00100304' * 100, 'rindex', '\u0102')
-        self.assertRaises(ValueError, ('a' * 100).rindex, '\u0102')
-        self.assertRaises(ValueError, ('a' * 100).rindex, '\U00100304')
-        self.assertRaises(ValueError, ('\u0102' * 100).rindex, '\U00100304')
-        self.checkequal(0, '_a' + '\u0102' * 100, 'rindex', '_a')
-        self.checkequal(0, '_a' + '\U00100304' * 100, 'rindex', '_a')
-        self.checkequal(0, '_\u0102' + '\U00100304' * 100, 'rindex', '_\u0102')
-        self.assertRaises(ValueError, ('a' * 100).rindex, '\u0102a')
-        self.assertRaises(ValueError, ('a' * 100).rindex, '\U00100304a')
-        self.assertRaises(ValueError, ('\u0102' * 100).rindex, '\U00100304\u0102')
-
-    def test_maketrans_translate(self):
-        # these work with plain translate()
-        self.checkequalnofix('bbbc', 'abababc', 'translate',
-                             {ord('a'): None})
-        self.checkequalnofix('iiic', 'abababc', 'translate',
-                             {ord('a'): None, ord('b'): ord('i')})
-        self.checkequalnofix('iiix', 'abababc', 'translate',
-                             {ord('a'): None, ord('b'): ord('i'), ord('c'): 'x'})
-        self.checkequalnofix('c', 'abababc', 'translate',
-                             {ord('a'): None, ord('b'): ''})
-        self.checkequalnofix('xyyx', 'xzx', 'translate',
-                             {ord('z'): 'yy'})
-
-        # this needs maketrans()
-        self.checkequalnofix('abababc', 'abababc', 'translate',
-                             {'b': '<i>'})
-        tbl = self.type2test.maketrans({'a': None, 'b': '<i>'})
-        self.checkequalnofix('<i><i><i>c', 'abababc', 'translate', tbl)
-        # test alternative way of calling maketrans()
-        tbl = self.type2test.maketrans('abc', 'xyz', 'd')
-        self.checkequalnofix('xyzzy', 'abdcdcbdddd', 'translate', tbl)
-
-        # various tests switching from ASCII to latin1 or the opposite;
-        # same length, remove a letter, or replace with a longer string.
-        self.assertEqual("[a]".translate(str.maketrans('a', 'X')),
-                         "[X]")
-        self.assertEqual("[a]".translate(str.maketrans({'a': 'X'})),
-                         "[X]")
-        self.assertEqual("[a]".translate(str.maketrans({'a': None})),
-                         "[]")
-        self.assertEqual("[a]".translate(str.maketrans({'a': 'XXX'})),
-                         "[XXX]")
-        self.assertEqual("[a]".translate(str.maketrans({'a': '\xe9'})),
-                         "[\xe9]")
-        self.assertEqual('axb'.translate(str.maketrans({'a': None, 'b': '123'})),
-                         "x123")
-        self.assertEqual('axb'.translate(str.maketrans({'a': None, 'b': '\xe9'})),
-                         "x\xe9")
-
-        # test non-ASCII (don't take the fast-path)
-        self.assertEqual("[a]".translate(str.maketrans({'a': '<\xe9>'})),
-                         "[<\xe9>]")
-        self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': 'a'})),
-                         "[a]")
-        self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': None})),
-                         "[]")
-        self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': '123'})),
-                         "[123]")
-        self.assertEqual("[a\xe9]".translate(str.maketrans({'a': '<\u20ac>'})),
-                         "[<\u20ac>\xe9]")
-
-        # invalid Unicode characters
-        invalid_char = 0x10ffff+1
-        for before in "a\xe9\u20ac\U0010ffff":
-            mapping = str.maketrans({before: invalid_char})
-            text = "[%s]" % before
-            self.assertRaises(ValueError, text.translate, mapping)
-
-        # errors
-        self.assertRaises(TypeError, self.type2test.maketrans)
-        self.assertRaises(ValueError, self.type2test.maketrans, 'abc', 'defg')
-        self.assertRaises(TypeError, self.type2test.maketrans, 2, 'def')
-        self.assertRaises(TypeError, self.type2test.maketrans, 'abc', 2)
-        self.assertRaises(TypeError, self.type2test.maketrans, 'abc', 'def', 2)
-        self.assertRaises(ValueError, self.type2test.maketrans, {'xy': 2})
-        self.assertRaises(TypeError, self.type2test.maketrans, {(1,): 2})
-
-        self.assertRaises(TypeError, 'hello'.translate)
-        self.assertRaises(TypeError, 'abababc'.translate, 'abc', 'xyz')
-
-    def test_split(self):
-        string_tests.CommonTest.test_split(self)
-
-        # test mixed kinds
-        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
-            left *= 9
-            right *= 9
-            for delim in ('c', '\u0102', '\U00010302'):
-                self.checkequal([left + right],
-                                left + right, 'split', delim)
-                self.checkequal([left, right],
-                                left + delim + right, 'split', delim)
-                self.checkequal([left + right],
-                                left + right, 'split', delim * 2)
-                self.checkequal([left, right],
-                                left + delim * 2 + right, 'split', delim *2)
-
-    def test_rsplit(self):
-        string_tests.CommonTest.test_rsplit(self)
-        # test mixed kinds
-        for left, right in ('ba', 'ÑŽÑ‘', '\u0101\u0100', '\U00010301\U00010300'):
-            left *= 9
-            right *= 9
-            for delim in ('c', 'Ñ‹', '\u0102', '\U00010302'):
-                self.checkequal([left + right],
-                                left + right, 'rsplit', delim)
-                self.checkequal([left, right],
-                                left + delim + right, 'rsplit', delim)
-                self.checkequal([left + right],
-                                left + right, 'rsplit', delim * 2)
-                self.checkequal([left, right],
-                                left + delim * 2 + right, 'rsplit', delim *2)
-
-            # Check `None` as well:
-            self.checkequal([left + right],
-                             left + right, 'rsplit', None)
-
-    def test_partition(self):
-        string_tests.MixinStrUnicodeUserStringTest.test_partition(self)
-        # test mixed kinds
-        self.checkequal(('ABCDEFGH', '', ''), 'ABCDEFGH', 'partition', '\u4200')
-        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
-            left *= 9
-            right *= 9
-            for delim in ('c', '\u0102', '\U00010302'):
-                self.checkequal((left + right, '', ''),
-                                left + right, 'partition', delim)
-                self.checkequal((left, delim, right),
-                                left + delim + right, 'partition', delim)
-                self.checkequal((left + right, '', ''),
-                                left + right, 'partition', delim * 2)
-                self.checkequal((left, delim * 2, right),
-                                left + delim * 2 + right, 'partition', delim * 2)
-
-    def test_rpartition(self):
-        string_tests.MixinStrUnicodeUserStringTest.test_rpartition(self)
-        # test mixed kinds
-        self.checkequal(('', '', 'ABCDEFGH'), 'ABCDEFGH', 'rpartition', '\u4200')
-        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
-            left *= 9
-            right *= 9
-            for delim in ('c', '\u0102', '\U00010302'):
-                self.checkequal(('', '', left + right),
-                                left + right, 'rpartition', delim)
-                self.checkequal((left, delim, right),
-                                left + delim + right, 'rpartition', delim)
-                self.checkequal(('', '', left + right),
-                                left + right, 'rpartition', delim * 2)
-                self.checkequal((left, delim * 2, right),
-                                left + delim * 2 + right, 'rpartition', delim * 2)
-
-    def test_join(self):
-        string_tests.MixinStrUnicodeUserStringTest.test_join(self)
-
-        class MyWrapper:
-            def __init__(self, sval): self.sval = sval
-            def __str__(self): return self.sval
-
-        # mixed arguments
-        self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
-        self.checkequalnofix('abcd', '', 'join', ('a', 'b', 'c', 'd'))
-        self.checkequalnofix('w x y z', ' ', 'join', string_tests.Sequence('wxyz'))
-        self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
-        self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
-        self.checkequalnofix('abcd', '', 'join', ('a', 'b', 'c', 'd'))
-        self.checkequalnofix('w x y z', ' ', 'join', string_tests.Sequence('wxyz'))
-        self.checkraises(TypeError, ' ', 'join', ['1', '2', MyWrapper('foo')])
-        self.checkraises(TypeError, ' ', 'join', ['1', '2', '3', bytes()])
-        self.checkraises(TypeError, ' ', 'join', [1, 2, 3])
-        self.checkraises(TypeError, ' ', 'join', ['1', '2', 3])
-
-    @unittest.skipIf(sys.maxsize > 2**32,
-        'needs too much memory on a 64-bit platform')
-    def test_join_overflow(self):
-        size = int(sys.maxsize**0.5) + 1
-        seq = ('A' * size,) * size
-        self.assertRaises(OverflowError, ''.join, seq)
-
-    def test_replace(self):
-        string_tests.CommonTest.test_replace(self)
-
-        # method call forwarded from str implementation because of unicode argument
-        self.checkequalnofix('one@two!three!', 'one!two!three!', 'replace', '!', '@', 1)
-        self.assertRaises(TypeError, 'replace'.replace, "r", 42)
-        # test mixed kinds
-        for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
-            left *= 9
-            right *= 9
-            for delim in ('c', '\u0102', '\U00010302'):
-                for repl in ('d', '\u0103', '\U00010303'):
-                    self.checkequal(left + right,
-                                    left + right, 'replace', delim, repl)
-                    self.checkequal(left + repl + right,
-                                    left + delim + right,
-                                    'replace', delim, repl)
-                    self.checkequal(left + right,
-                                    left + right, 'replace', delim * 2, repl)
-                    self.checkequal(left + repl + right,
-                                    left + delim * 2 + right,
-                                    'replace', delim * 2, repl)
-
-    @support.cpython_only
-    def test_replace_id(self):
-        pattern = 'abc'
-        text = 'abc def'
-        self.assertIs(text.replace(pattern, pattern), text)
-
-    def test_repeat_id_preserving(self):
-        a = '123abc1@'
-        b = '456zyx-+'
-        self.assertEqual(id(a), id(a))
-        self.assertNotEqual(id(a), id(b))
-        self.assertNotEqual(id(a), id(a * -4))
-        self.assertNotEqual(id(a), id(a * 0))
-        self.assertEqual(id(a), id(a * 1))
-        self.assertEqual(id(a), id(1 * a))
-        self.assertNotEqual(id(a), id(a * 2))
-
-        class SubStr(str):
-            pass
-
-        s = SubStr('qwerty()')
-        self.assertEqual(id(s), id(s))
-        self.assertNotEqual(id(s), id(s * -4))
-        self.assertNotEqual(id(s), id(s * 0))
-        self.assertNotEqual(id(s), id(s * 1))
-        self.assertNotEqual(id(s), id(1 * s))
-        self.assertNotEqual(id(s), id(s * 2))
-
-    def test_bytes_comparison(self):
-        with warnings_helper.check_warnings():
-            warnings.simplefilter('ignore', BytesWarning)
-            self.assertEqual('abc' == b'abc', False)
-            self.assertEqual('abc' != b'abc', True)
-            self.assertEqual('abc' == bytearray(b'abc'), False)
-            self.assertEqual('abc' != bytearray(b'abc'), True)
-
-    def test_comparison(self):
-        # Comparisons:
-        self.assertEqual('abc', 'abc')
-        self.assertTrue('abcd' > 'abc')
-        self.assertTrue('abc' < 'abcd')
-
-        if 0:
-            # Move these tests to a Unicode collation module test...
-            # Testing UTF-16 code point order comparisons...
-
-            # No surrogates, no fixup required.
-            self.assertTrue('\u0061' < '\u20ac')
-            # Non surrogate below surrogate value, no fixup required
-            self.assertTrue('\u0061' < '\ud800\udc02')
-
-            # Non surrogate above surrogate value, fixup required
-            def test_lecmp(s, s2):
-                self.assertTrue(s < s2)
-
-            def test_fixup(s):
-                s2 = '\ud800\udc01'
-                test_lecmp(s, s2)
-                s2 = '\ud900\udc01'
-                test_lecmp(s, s2)
-                s2 = '\uda00\udc01'
-                test_lecmp(s, s2)
-                s2 = '\udb00\udc01'
-                test_lecmp(s, s2)
-                s2 = '\ud800\udd01'
-                test_lecmp(s, s2)
-                s2 = '\ud900\udd01'
-                test_lecmp(s, s2)
-                s2 = '\uda00\udd01'
-                test_lecmp(s, s2)
-                s2 = '\udb00\udd01'
-                test_lecmp(s, s2)
-                s2 = '\ud800\ude01'
-                test_lecmp(s, s2)
-                s2 = '\ud900\ude01'
-                test_lecmp(s, s2)
-                s2 = '\uda00\ude01'
-                test_lecmp(s, s2)
-                s2 = '\udb00\ude01'
-                test_lecmp(s, s2)
-                s2 = '\ud800\udfff'
-                test_lecmp(s, s2)
-                s2 = '\ud900\udfff'
-                test_lecmp(s, s2)
-                s2 = '\uda00\udfff'
-                test_lecmp(s, s2)
-                s2 = '\udb00\udfff'
-                test_lecmp(s, s2)
-
-                test_fixup('\ue000')
-                test_fixup('\uff61')
-
-        # Surrogates on both sides, no fixup required
-        self.assertTrue('\ud800\udc02' < '\ud84d\udc56')
-
-    def test_islower(self):
-        super().test_islower()
-        self.checkequalnofix(False, '\u1FFc', 'islower')
-        self.assertFalse('\u2167'.islower())
-        self.assertTrue('\u2177'.islower())
-        # non-BMP, uppercase
-        self.assertFalse('\U00010401'.islower())
-        self.assertFalse('\U00010427'.islower())
-        # non-BMP, lowercase
-        self.assertTrue('\U00010429'.islower())
-        self.assertTrue('\U0001044E'.islower())
-        # non-BMP, non-cased
-        self.assertFalse('\U0001F40D'.islower())
-        self.assertFalse('\U0001F46F'.islower())
-
-    def test_isupper(self):
-        super().test_isupper()
-        self.checkequalnofix(False, '\u1FFc', 'isupper')
-        self.assertTrue('\u2167'.isupper())
-        self.assertFalse('\u2177'.isupper())
-        # non-BMP, uppercase
-        self.assertTrue('\U00010401'.isupper())
-        self.assertTrue('\U00010427'.isupper())
-        # non-BMP, lowercase
-        self.assertFalse('\U00010429'.isupper())
-        self.assertFalse('\U0001044E'.isupper())
-        # non-BMP, non-cased
-        self.assertFalse('\U0001F40D'.isupper())
-        self.assertFalse('\U0001F46F'.isupper())
-
-    def test_istitle(self):
-        super().test_istitle()
-        self.checkequalnofix(True, '\u1FFc', 'istitle')
-        self.checkequalnofix(True, 'Greek \u1FFcitlecases ...', 'istitle')
-
-        # non-BMP, uppercase + lowercase
-        self.assertTrue('\U00010401\U00010429'.istitle())
-        self.assertTrue('\U00010427\U0001044E'.istitle())
-        # apparently there are no titlecased (Lt) non-BMP chars in Unicode 6
-        for ch in ['\U00010429', '\U0001044E', '\U0001F40D', '\U0001F46F']:
-            self.assertFalse(ch.istitle(), '{!a} is not title'.format(ch))
-
-    def test_isspace(self):
-        super().test_isspace()
-        self.checkequalnofix(True, '\u2000', 'isspace')
-        self.checkequalnofix(True, '\u200a', 'isspace')
-        self.checkequalnofix(False, '\u2014', 'isspace')
-        # There are no non-BMP whitespace chars as of Unicode 12.
-        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
-                   '\U0001F40D', '\U0001F46F']:
-            self.assertFalse(ch.isspace(), '{!a} is not space.'.format(ch))
-
-    @support.requires_resource('cpu')
-    def test_isspace_invariant(self):
-        for codepoint in range(sys.maxunicode + 1):
-            char = chr(codepoint)
-            bidirectional = unicodedata.bidirectional(char)
-            category = unicodedata.category(char)
-            self.assertEqual(char.isspace(),
-                             (bidirectional in ('WS', 'B', 'S')
-                              or category == 'Zs'))
-
-    def test_isalnum(self):
-        super().test_isalnum()
-        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
-                   '\U0001D7F6', '\U00011066', '\U000104A0', '\U0001F107']:
-            self.assertTrue(ch.isalnum(), '{!a} is alnum.'.format(ch))
-
-    def test_isalpha(self):
-        super().test_isalpha()
-        self.checkequalnofix(True, '\u1FFc', 'isalpha')
-        # non-BMP, cased
-        self.assertTrue('\U00010401'.isalpha())
-        self.assertTrue('\U00010427'.isalpha())
-        self.assertTrue('\U00010429'.isalpha())
-        self.assertTrue('\U0001044E'.isalpha())
-        # non-BMP, non-cased
-        self.assertFalse('\U0001F40D'.isalpha())
-        self.assertFalse('\U0001F46F'.isalpha())
-
-    def test_isascii(self):
-        super().test_isascii()
-        self.assertFalse("\u20ac".isascii())
-        self.assertFalse("\U0010ffff".isascii())
-
-    def test_isdecimal(self):
-        self.checkequalnofix(False, '', 'isdecimal')
-        self.checkequalnofix(False, 'a', 'isdecimal')
-        self.checkequalnofix(True, '0', 'isdecimal')
-        self.checkequalnofix(False, '\u2460', 'isdecimal') # CIRCLED DIGIT ONE
-        self.checkequalnofix(False, '\xbc', 'isdecimal') # VULGAR FRACTION ONE QUARTER
-        self.checkequalnofix(True, '\u0660', 'isdecimal') # ARABIC-INDIC DIGIT ZERO
-        self.checkequalnofix(True, '0123456789', 'isdecimal')
-        self.checkequalnofix(False, '0123456789a', 'isdecimal')
-
-        self.checkraises(TypeError, 'abc', 'isdecimal', 42)
-
-        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
-                   '\U0001F40D', '\U0001F46F', '\U00011065', '\U0001F107']:
-            self.assertFalse(ch.isdecimal(), '{!a} is not decimal.'.format(ch))
-        for ch in ['\U0001D7F6', '\U00011066', '\U000104A0']:
-            self.assertTrue(ch.isdecimal(), '{!a} is decimal.'.format(ch))
-
-    def test_isdigit(self):
-        super().test_isdigit()
-        self.checkequalnofix(True, '\u2460', 'isdigit')
-        self.checkequalnofix(False, '\xbc', 'isdigit')
-        self.checkequalnofix(True, '\u0660', 'isdigit')
-
-        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
-                   '\U0001F40D', '\U0001F46F', '\U00011065']:
-            self.assertFalse(ch.isdigit(), '{!a} is not a digit.'.format(ch))
-        for ch in ['\U0001D7F6', '\U00011066', '\U000104A0', '\U0001F107']:
-            self.assertTrue(ch.isdigit(), '{!a} is a digit.'.format(ch))
-
-    def test_isnumeric(self):
-        self.checkequalnofix(False, '', 'isnumeric')
-        self.checkequalnofix(False, 'a', 'isnumeric')
-        self.checkequalnofix(True, '0', 'isnumeric')
-        self.checkequalnofix(True, '\u2460', 'isnumeric')
-        self.checkequalnofix(True, '\xbc', 'isnumeric')
-        self.checkequalnofix(True, '\u0660', 'isnumeric')
-        self.checkequalnofix(True, '0123456789', 'isnumeric')
-        self.checkequalnofix(False, '0123456789a', 'isnumeric')
-
-        self.assertRaises(TypeError, "abc".isnumeric, 42)
-
-        for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
-                   '\U0001F40D', '\U0001F46F']:
-            self.assertFalse(ch.isnumeric(), '{!a} is not numeric.'.format(ch))
-        for ch in ['\U00011065', '\U0001D7F6', '\U00011066',
-                   '\U000104A0', '\U0001F107']:
-            self.assertTrue(ch.isnumeric(), '{!a} is numeric.'.format(ch))
-
-    def test_isidentifier(self):
-        self.assertTrue("a".isidentifier())
-        self.assertTrue("Z".isidentifier())
-        self.assertTrue("_".isidentifier())
-        self.assertTrue("b0".isidentifier())
-        self.assertTrue("bc".isidentifier())
-        self.assertTrue("b_".isidentifier())
-        self.assertTrue("µ".isidentifier())
-        self.assertTrue("�������".isidentifier())
-
-        self.assertFalse(" ".isidentifier())
-        self.assertFalse("[".isidentifier())
-        self.assertFalse("©".isidentifier())
-        self.assertFalse("0".isidentifier())
-
-    @support.cpython_only
-    @support.requires_legacy_unicode_capi
-    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
-    def test_isidentifier_legacy(self):
-        u = '�������'
-        self.assertTrue(u.isidentifier())
-        with warnings_helper.check_warnings():
-            warnings.simplefilter('ignore', DeprecationWarning)
-            self.assertTrue(_testcapi.unicode_legacy_string(u).isidentifier())
-
-    def test_isprintable(self):
-        self.assertTrue("".isprintable())
-        self.assertTrue(" ".isprintable())
-        self.assertTrue("abcdefg".isprintable())
-        self.assertFalse("abcdefg\n".isprintable())
-        # some defined Unicode character
-        self.assertTrue("\u0374".isprintable())
-        # undefined character
-        self.assertFalse("\u0378".isprintable())
-        # single surrogate character
-        self.assertFalse("\ud800".isprintable())
-
-        self.assertTrue('\U0001F46F'.isprintable())
-        self.assertFalse('\U000E0020'.isprintable())
-
-    def test_surrogates(self):
-        for s in ('a\uD800b\uDFFF', 'a\uDFFFb\uD800',
-                  'a\uD800b\uDFFFa', 'a\uDFFFb\uD800a'):
-            self.assertTrue(s.islower())
-            self.assertFalse(s.isupper())
-            self.assertFalse(s.istitle())
-        for s in ('A\uD800B\uDFFF', 'A\uDFFFB\uD800',
-                  'A\uD800B\uDFFFA', 'A\uDFFFB\uD800A'):
-            self.assertFalse(s.islower())
-            self.assertTrue(s.isupper())
-            self.assertTrue(s.istitle())
-
-        for meth_name in ('islower', 'isupper', 'istitle'):
-            meth = getattr(str, meth_name)
-            for s in ('\uD800', '\uDFFF', '\uD800\uD800', '\uDFFF\uDFFF'):
-                self.assertFalse(meth(s), '%a.%s() is False' % (s, meth_name))
-
-        for meth_name in ('isalpha', 'isalnum', 'isdigit', 'isspace',
-                          'isdecimal', 'isnumeric',
-                          'isidentifier', 'isprintable'):
-            meth = getattr(str, meth_name)
-            for s in ('\uD800', '\uDFFF', '\uD800\uD800', '\uDFFF\uDFFF',
-                      'a\uD800b\uDFFF', 'a\uDFFFb\uD800',
-                      'a\uD800b\uDFFFa', 'a\uDFFFb\uD800a'):
-                self.assertFalse(meth(s), '%a.%s() is False' % (s, meth_name))
-
-
-    def test_lower(self):
-        string_tests.CommonTest.test_lower(self)
-        self.assertEqual('\U00010427'.lower(), '\U0001044F')
-        self.assertEqual('\U00010427\U00010427'.lower(),
-                         '\U0001044F\U0001044F')
-        self.assertEqual('\U00010427\U0001044F'.lower(),
-                         '\U0001044F\U0001044F')
-        self.assertEqual('X\U00010427x\U0001044F'.lower(),
-                         'x\U0001044Fx\U0001044F')
-        self.assertEqual('�'.lower(), '�')
-        self.assertEqual('\u0130'.lower(), '\u0069\u0307')
-        # Special case for GREEK CAPITAL LETTER SIGMA U+03A3
-        self.assertEqual('\u03a3'.lower(), '\u03c3')
-        self.assertEqual('\u0345\u03a3'.lower(), '\u0345\u03c3')
-        self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
-        self.assertEqual('A\u0345\u03a3a'.lower(), 'a\u0345\u03c3a')
-        self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
-        self.assertEqual('A\u03a3\u0345'.lower(), 'a\u03c2\u0345')
-        self.assertEqual('\u03a3\u0345 '.lower(), '\u03c3\u0345 ')
-        self.assertEqual('\U0008fffe'.lower(), '\U0008fffe')
-        self.assertEqual('\u2177'.lower(), '\u2177')
-
-    def test_casefold(self):
-        self.assertEqual('hello'.casefold(), 'hello')
-        self.assertEqual('hELlo'.casefold(), 'hello')
-        self.assertEqual('ß'.casefold(), 'ss')
-        self.assertEqual('�'.casefold(), 'fi')
-        self.assertEqual('\u03a3'.casefold(), '\u03c3')
-        self.assertEqual('A\u0345\u03a3'.casefold(), 'a\u03b9\u03c3')
-        self.assertEqual('\u00b5'.casefold(), '\u03bc')
-
-    def test_upper(self):
-        string_tests.CommonTest.test_upper(self)
-        self.assertEqual('\U0001044F'.upper(), '\U00010427')
-        self.assertEqual('\U0001044F\U0001044F'.upper(),
-                         '\U00010427\U00010427')
-        self.assertEqual('\U00010427\U0001044F'.upper(),
-                         '\U00010427\U00010427')
-        self.assertEqual('X\U00010427x\U0001044F'.upper(),
-                         'X\U00010427X\U00010427')
-        self.assertEqual('�'.upper(), 'FI')
-        self.assertEqual('\u0130'.upper(), '\u0130')
-        self.assertEqual('\u03a3'.upper(), '\u03a3')
-        self.assertEqual('ß'.upper(), 'SS')
-        self.assertEqual('\u1fd2'.upper(), '\u0399\u0308\u0300')
-        self.assertEqual('\U0008fffe'.upper(), '\U0008fffe')
-        self.assertEqual('\u2177'.upper(), '\u2167')
-
-    def test_capitalize(self):
-        string_tests.CommonTest.test_capitalize(self)
-        self.assertEqual('\U0001044F'.capitalize(), '\U00010427')
-        self.assertEqual('\U0001044F\U0001044F'.capitalize(),
-                         '\U00010427\U0001044F')
-        self.assertEqual('\U00010427\U0001044F'.capitalize(),
-                         '\U00010427\U0001044F')
-        self.assertEqual('\U0001044F\U00010427'.capitalize(),
-                         '\U00010427\U0001044F')
-        self.assertEqual('X\U00010427x\U0001044F'.capitalize(),
-                         'X\U0001044Fx\U0001044F')
-        self.assertEqual('h\u0130'.capitalize(), 'H\u0069\u0307')
-        exp = '\u0399\u0308\u0300\u0069\u0307'
-        self.assertEqual('\u1fd2\u0130'.capitalize(), exp)
-        self.assertEqual('�nnish'.capitalize(), 'Finnish')
-        self.assertEqual('A\u0345\u03a3'.capitalize(), 'A\u0345\u03c2')
-
-    def test_title(self):
-        super().test_title()
-        self.assertEqual('\U0001044F'.title(), '\U00010427')
-        self.assertEqual('\U0001044F\U0001044F'.title(),
-                         '\U00010427\U0001044F')
-        self.assertEqual('\U0001044F\U0001044F \U0001044F\U0001044F'.title(),
-                         '\U00010427\U0001044F \U00010427\U0001044F')
-        self.assertEqual('\U00010427\U0001044F \U00010427\U0001044F'.title(),
-                         '\U00010427\U0001044F \U00010427\U0001044F')
-        self.assertEqual('\U0001044F\U00010427 \U0001044F\U00010427'.title(),
-                         '\U00010427\U0001044F \U00010427\U0001044F')
-        self.assertEqual('X\U00010427x\U0001044F X\U00010427x\U0001044F'.title(),
-                         'X\U0001044Fx\U0001044F X\U0001044Fx\U0001044F')
-        self.assertEqual('�NNISH'.title(), 'Finnish')
-        self.assertEqual('A\u03a3 \u1fa1xy'.title(), 'A\u03c2 \u1fa9xy')
-        self.assertEqual('A\u03a3A'.title(), 'A\u03c3a')
-
-    def test_swapcase(self):
-        string_tests.CommonTest.test_swapcase(self)
-        self.assertEqual('\U0001044F'.swapcase(), '\U00010427')
-        self.assertEqual('\U00010427'.swapcase(), '\U0001044F')
-        self.assertEqual('\U0001044F\U0001044F'.swapcase(),
-                         '\U00010427\U00010427')
-        self.assertEqual('\U00010427\U0001044F'.swapcase(),
-                         '\U0001044F\U00010427')
-        self.assertEqual('\U0001044F\U00010427'.swapcase(),
-                         '\U00010427\U0001044F')
-        self.assertEqual('X\U00010427x\U0001044F'.swapcase(),
-                         'x\U0001044FX\U00010427')
-        self.assertEqual('�'.swapcase(), 'FI')
-        self.assertEqual('\u0130'.swapcase(), '\u0069\u0307')
-        # Special case for GREEK CAPITAL LETTER SIGMA U+03A3
-        self.assertEqual('\u03a3'.swapcase(), '\u03c3')
-        self.assertEqual('\u0345\u03a3'.swapcase(), '\u0399\u03c3')
-        self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
-        self.assertEqual('A\u0345\u03a3a'.swapcase(), 'a\u0399\u03c3A')
-        self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
-        self.assertEqual('A\u03a3\u0345'.swapcase(), 'a\u03c2\u0399')
-        self.assertEqual('\u03a3\u0345 '.swapcase(), '\u03c3\u0399 ')
-        self.assertEqual('\u03a3'.swapcase(), '\u03c3')
-        self.assertEqual('ß'.swapcase(), 'SS')
-        self.assertEqual('\u1fd2'.swapcase(), '\u0399\u0308\u0300')
-
-    def test_center(self):
-        string_tests.CommonTest.test_center(self)
-        self.assertEqual('x'.center(2, '\U0010FFFF'),
-                         'x\U0010FFFF')
-        self.assertEqual('x'.center(3, '\U0010FFFF'),
-                         '\U0010FFFFx\U0010FFFF')
-        self.assertEqual('x'.center(4, '\U0010FFFF'),
-                         '\U0010FFFFx\U0010FFFF\U0010FFFF')
-
-    @unittest.skipUnless(sys.maxsize == 2**31 - 1, "requires 32-bit system")
-    @support.cpython_only
-    def test_case_operation_overflow(self):
-        # Issue #22643
-        size = 2**32//12 + 1
-        try:
-            s = "ü" * size
-        except MemoryError:
-            self.skipTest('no enough memory (%.0f MiB required)' % (size / 2**20))
-        try:
-            self.assertRaises(OverflowError, s.upper)
-        finally:
-            del s
-
-    def test_contains(self):
-        # Testing Unicode contains method
-        self.assertIn('a', 'abdb')
-        self.assertIn('a', 'bdab')
-        self.assertIn('a', 'bdaba')
-        self.assertIn('a', 'bdba')
-        self.assertNotIn('a', 'bdb')
-        self.assertIn('a', 'bdba')
-        self.assertIn('a', ('a',1,None))
-        self.assertIn('a', (1,None,'a'))
-        self.assertIn('a', ('a',1,None))
-        self.assertIn('a', (1,None,'a'))
-        self.assertNotIn('a', ('x',1,'y'))
-        self.assertNotIn('a', ('x',1,None))
-        self.assertNotIn('abcd', 'abcxxxx')
-        self.assertIn('ab', 'abcd')
-        self.assertIn('ab', 'abc')
-        self.assertIn('ab', (1,None,'ab'))
-        self.assertIn('', 'abc')
-        self.assertIn('', '')
-        self.assertIn('', 'abc')
-        self.assertNotIn('\0', 'abc')
-        self.assertIn('\0', '\0abc')
-        self.assertIn('\0', 'abc\0')
-        self.assertIn('a', '\0abc')
-        self.assertIn('asdf', 'asdf')
-        self.assertNotIn('asdf', 'asd')
-        self.assertNotIn('asdf', '')
-
-        self.assertRaises(TypeError, "abc".__contains__)
-        # test mixed kinds
-        for fill in ('a', '\u0100', '\U00010300'):
-            fill *= 9
-            for delim in ('c', '\u0102', '\U00010302'):
-                self.assertNotIn(delim, fill)
-                self.assertIn(delim, fill + delim)
-                self.assertNotIn(delim * 2, fill)
-                self.assertIn(delim * 2, fill + delim * 2)
-
-    def test_issue18183(self):
-        '\U00010000\U00100000'.lower()
-        '\U00010000\U00100000'.casefold()
-        '\U00010000\U00100000'.upper()
-        '\U00010000\U00100000'.capitalize()
-        '\U00010000\U00100000'.title()
-        '\U00010000\U00100000'.swapcase()
-        '\U00100000'.center(3, '\U00010000')
-        '\U00100000'.ljust(3, '\U00010000')
-        '\U00100000'.rjust(3, '\U00010000')
-
-    def test_format(self):
-        self.assertEqual(''.format(), '')
-        self.assertEqual('a'.format(), 'a')
-        self.assertEqual('ab'.format(), 'ab')
-        self.assertEqual('a{{'.format(), 'a{')
-        self.assertEqual('a}}'.format(), 'a}')
-        self.assertEqual('{{b'.format(), '{b')
-        self.assertEqual('}}b'.format(), '}b')
-        self.assertEqual('a{{b'.format(), 'a{b')
-
-        # examples from the PEP:
-        import datetime
-        self.assertEqual("My name is {0}".format('Fred'), "My name is Fred")
-        self.assertEqual("My name is {0[name]}".format(dict(name='Fred')),
-                         "My name is Fred")
-        self.assertEqual("My name is {0} :-{{}}".format('Fred'),
-                         "My name is Fred :-{}")
-
-        d = datetime.date(2007, 8, 18)
-        self.assertEqual("The year is {0.year}".format(d),
-                         "The year is 2007")
-
-        # classes we'll use for testing
-        class C:
-            def __init__(self, x=100):
-                self._x = x
-            def __format__(self, spec):
-                return spec
-
-        class D:
-            def __init__(self, x):
-                self.x = x
-            def __format__(self, spec):
-                return str(self.x)
-
-        # class with __str__, but no __format__
-        class E:
-            def __init__(self, x):
-                self.x = x
-            def __str__(self):
-                return 'E(' + self.x + ')'
-
-        # class with __repr__, but no __format__ or __str__
-        class F:
-            def __init__(self, x):
-                self.x = x
-            def __repr__(self):
-                return 'F(' + self.x + ')'
-
-        # class with __format__ that forwards to string, for some format_spec's
-        class G:
-            def __init__(self, x):
-                self.x = x
-            def __str__(self):
-                return "string is " + self.x
-            def __format__(self, format_spec):
-                if format_spec == 'd':
-                    return 'G(' + self.x + ')'
-                return object.__format__(self, format_spec)
-
-        class I(datetime.date):
-            def __format__(self, format_spec):
-                return self.strftime(format_spec)
-
-        class J(int):
-            def __format__(self, format_spec):
-                return int.__format__(self * 2, format_spec)
-
-        class M:
-            def __init__(self, x):
-                self.x = x
-            def __repr__(self):
-                return 'M(' + self.x + ')'
-            __str__ = None
-
-        class N:
-            def __init__(self, x):
-                self.x = x
-            def __repr__(self):
-                return 'N(' + self.x + ')'
-            __format__ = None
-
-        self.assertEqual(''.format(), '')
-        self.assertEqual('abc'.format(), 'abc')
-        self.assertEqual('{0}'.format('abc'), 'abc')
-        self.assertEqual('{0:}'.format('abc'), 'abc')
-#        self.assertEqual('{ 0 }'.format('abc'), 'abc')
-        self.assertEqual('X{0}'.format('abc'), 'Xabc')
-        self.assertEqual('{0}X'.format('abc'), 'abcX')
-        self.assertEqual('X{0}Y'.format('abc'), 'XabcY')
-        self.assertEqual('{1}'.format(1, 'abc'), 'abc')
-        self.assertEqual('X{1}'.format(1, 'abc'), 'Xabc')
-        self.assertEqual('{1}X'.format(1, 'abc'), 'abcX')
-        self.assertEqual('X{1}Y'.format(1, 'abc'), 'XabcY')
-        self.assertEqual('{0}'.format(-15), '-15')
-        self.assertEqual('{0}{1}'.format(-15, 'abc'), '-15abc')
-        self.assertEqual('{0}X{1}'.format(-15, 'abc'), '-15Xabc')
-        self.assertEqual('{{'.format(), '{')
-        self.assertEqual('}}'.format(), '}')
-        self.assertEqual('{{}}'.format(), '{}')
-        self.assertEqual('{{x}}'.format(), '{x}')
-        self.assertEqual('{{{0}}}'.format(123), '{123}')
-        self.assertEqual('{{{{0}}}}'.format(), '{{0}}')
-        self.assertEqual('}}{{'.format(), '}{')
-        self.assertEqual('}}x{{'.format(), '}x{')
-
-        # weird field names
-        self.assertEqual("{0[foo-bar]}".format({'foo-bar':'baz'}), 'baz')
-        self.assertEqual("{0[foo bar]}".format({'foo bar':'baz'}), 'baz')
-        self.assertEqual("{0[ ]}".format({' ':3}), '3')
-
-        self.assertEqual('{foo._x}'.format(foo=C(20)), '20')
-        self.assertEqual('{1}{0}'.format(D(10), D(20)), '2010')
-        self.assertEqual('{0._x.x}'.format(C(D('abc'))), 'abc')
-        self.assertEqual('{0[0]}'.format(['abc', 'def']), 'abc')
-        self.assertEqual('{0[1]}'.format(['abc', 'def']), 'def')
-        self.assertEqual('{0[1][0]}'.format(['abc', ['def']]), 'def')
-        self.assertEqual('{0[1][0].x}'.format(['abc', [D('def')]]), 'def')
-
-        # strings
-        self.assertEqual('{0:.3s}'.format('abc'), 'abc')
-        self.assertEqual('{0:.3s}'.format('ab'), 'ab')
-        self.assertEqual('{0:.3s}'.format('abcdef'), 'abc')
-        self.assertEqual('{0:.0s}'.format('abcdef'), '')
-        self.assertEqual('{0:3.3s}'.format('abc'), 'abc')
-        self.assertEqual('{0:2.3s}'.format('abc'), 'abc')
-        self.assertEqual('{0:2.2s}'.format('abc'), 'ab')
-        self.assertEqual('{0:3.2s}'.format('abc'), 'ab ')
-        self.assertEqual('{0:x<0s}'.format('result'), 'result')
-        self.assertEqual('{0:x<5s}'.format('result'), 'result')
-        self.assertEqual('{0:x<6s}'.format('result'), 'result')
-        self.assertEqual('{0:x<7s}'.format('result'), 'resultx')
-        self.assertEqual('{0:x<8s}'.format('result'), 'resultxx')
-        self.assertEqual('{0: <7s}'.format('result'), 'result ')
-        self.assertEqual('{0:<7s}'.format('result'), 'result ')
-        self.assertEqual('{0:>7s}'.format('result'), ' result')
-        self.assertEqual('{0:>8s}'.format('result'), '  result')
-        self.assertEqual('{0:^8s}'.format('result'), ' result ')
-        self.assertEqual('{0:^9s}'.format('result'), ' result  ')
-        self.assertEqual('{0:^10s}'.format('result'), '  result  ')
-        self.assertEqual('{0:8s}'.format('result'), 'result  ')
-        self.assertEqual('{0:0s}'.format('result'), 'result')
-        self.assertEqual('{0:08s}'.format('result'), 'result00')
-        self.assertEqual('{0:<08s}'.format('result'), 'result00')
-        self.assertEqual('{0:>08s}'.format('result'), '00result')
-        self.assertEqual('{0:^08s}'.format('result'), '0result0')
-        self.assertEqual('{0:10000}'.format('a'), 'a' + ' ' * 9999)
-        self.assertEqual('{0:10000}'.format(''), ' ' * 10000)
-        self.assertEqual('{0:10000000}'.format(''), ' ' * 10000000)
-
-        # issue 12546: use \x00 as a fill character
-        self.assertEqual('{0:\x00<6s}'.format('foo'), 'foo\x00\x00\x00')
-        self.assertEqual('{0:\x01<6s}'.format('foo'), 'foo\x01\x01\x01')
-        self.assertEqual('{0:\x00^6s}'.format('foo'), '\x00foo\x00\x00')
-        self.assertEqual('{0:^6s}'.format('foo'), ' foo  ')
-
-        self.assertEqual('{0:\x00<6}'.format(3), '3\x00\x00\x00\x00\x00')
-        self.assertEqual('{0:\x01<6}'.format(3), '3\x01\x01\x01\x01\x01')
-        self.assertEqual('{0:\x00^6}'.format(3), '\x00\x003\x00\x00\x00')
-        self.assertEqual('{0:<6}'.format(3), '3     ')
-
-        self.assertEqual('{0:\x00<6}'.format(3.14), '3.14\x00\x00')
-        self.assertEqual('{0:\x01<6}'.format(3.14), '3.14\x01\x01')
-        self.assertEqual('{0:\x00^6}'.format(3.14), '\x003.14\x00')
-        self.assertEqual('{0:^6}'.format(3.14), ' 3.14 ')
-
-        self.assertEqual('{0:\x00<12}'.format(3+2.0j), '(3+2j)\x00\x00\x00\x00\x00\x00')
-        self.assertEqual('{0:\x01<12}'.format(3+2.0j), '(3+2j)\x01\x01\x01\x01\x01\x01')
-        self.assertEqual('{0:\x00^12}'.format(3+2.0j), '\x00\x00\x00(3+2j)\x00\x00\x00')
-        self.assertEqual('{0:^12}'.format(3+2.0j), '   (3+2j)   ')
-
-        # format specifiers for user defined type
-        self.assertEqual('{0:abc}'.format(C()), 'abc')
-
-        # !r, !s and !a coercions
-        self.assertEqual('{0!s}'.format('Hello'), 'Hello')
-        self.assertEqual('{0!s:}'.format('Hello'), 'Hello')
-        self.assertEqual('{0!s:15}'.format('Hello'), 'Hello          ')
-        self.assertEqual('{0!s:15s}'.format('Hello'), 'Hello          ')
-        self.assertEqual('{0!r}'.format('Hello'), "'Hello'")
-        self.assertEqual('{0!r:}'.format('Hello'), "'Hello'")
-        self.assertEqual('{0!r}'.format(F('Hello')), 'F(Hello)')
-        self.assertEqual('{0!r}'.format('\u0378'), "'\\u0378'") # nonprintable
-        self.assertEqual('{0!r}'.format('\u0374'), "'\u0374'")  # printable
-        self.assertEqual('{0!r}'.format(F('\u0374')), 'F(\u0374)')
-        self.assertEqual('{0!a}'.format('Hello'), "'Hello'")
-        self.assertEqual('{0!a}'.format('\u0378'), "'\\u0378'") # nonprintable
-        self.assertEqual('{0!a}'.format('\u0374'), "'\\u0374'") # printable
-        self.assertEqual('{0!a:}'.format('Hello'), "'Hello'")
-        self.assertEqual('{0!a}'.format(F('Hello')), 'F(Hello)')
-        self.assertEqual('{0!a}'.format(F('\u0374')), 'F(\\u0374)')
-
-        # test fallback to object.__format__
-        self.assertEqual('{0}'.format({}), '{}')
-        self.assertEqual('{0}'.format([]), '[]')
-        self.assertEqual('{0}'.format([1]), '[1]')
-
-        self.assertEqual('{0:d}'.format(G('data')), 'G(data)')
-        self.assertEqual('{0!s}'.format(G('data')), 'string is data')
-
-        self.assertRaises(TypeError, '{0:^10}'.format, E('data'))
-        self.assertRaises(TypeError, '{0:^10s}'.format, E('data'))
-        self.assertRaises(TypeError, '{0:>15s}'.format, G('data'))
-
-        self.assertEqual("{0:date: %Y-%m-%d}".format(I(year=2007,
-                                                       month=8,
-                                                       day=27)),
-                         "date: 2007-08-27")
-
-        # test deriving from a builtin type and overriding __format__
-        self.assertEqual("{0}".format(J(10)), "20")
-
-
-        # string format specifiers
-        self.assertEqual('{0:}'.format('a'), 'a')
-
-        # computed format specifiers
-        self.assertEqual("{0:.{1}}".format('hello world', 5), 'hello')
-        self.assertEqual("{0:.{1}s}".format('hello world', 5), 'hello')
-        self.assertEqual("{0:.{precision}s}".format('hello world', precision=5), 'hello')
-        self.assertEqual("{0:{width}.{precision}s}".format('hello world', width=10, precision=5), 'hello     ')
-        self.assertEqual("{0:{width}.{precision}s}".format('hello world', width='10', precision='5'), 'hello     ')
-
-        # test various errors
-        self.assertRaises(ValueError, '{'.format)
-        self.assertRaises(ValueError, '}'.format)
-        self.assertRaises(ValueError, 'a{'.format)
-        self.assertRaises(ValueError, 'a}'.format)
-        self.assertRaises(ValueError, '{a'.format)
-        self.assertRaises(ValueError, '}a'.format)
-        self.assertRaises(IndexError, '{0}'.format)
-        self.assertRaises(IndexError, '{1}'.format, 'abc')
-        self.assertRaises(KeyError,   '{x}'.format)
-        self.assertRaises(ValueError, "}{".format)
-        self.assertRaises(ValueError, "abc{0:{}".format)
-        self.assertRaises(ValueError, "{0".format)
-        self.assertRaises(IndexError, "{0.}".format)
-        self.assertRaises(ValueError, "{0.}".format, 0)
-        self.assertRaises(ValueError, "{0[}".format)
-        self.assertRaises(ValueError, "{0[}".format, [])
-        self.assertRaises(KeyError,   "{0]}".format)
-        self.assertRaises(ValueError, "{0.[]}".format, 0)
-        self.assertRaises(ValueError, "{0..foo}".format, 0)
-        self.assertRaises(ValueError, "{0[0}".format, 0)
-        self.assertRaises(ValueError, "{0[0:foo}".format, 0)
-        self.assertRaises(KeyError,   "{c]}".format)
-        self.assertRaises(ValueError, "{{ {{{0}}".format, 0)
-        self.assertRaises(ValueError, "{0}}".format, 0)
-        self.assertRaises(KeyError,   "{foo}".format, bar=3)
-        self.assertRaises(ValueError, "{0!x}".format, 3)
-        self.assertRaises(ValueError, "{0!}".format, 0)
-        self.assertRaises(ValueError, "{0!rs}".format, 0)
-        self.assertRaises(ValueError, "{!}".format)
-        self.assertRaises(IndexError, "{:}".format)
-        self.assertRaises(IndexError, "{:s}".format)
-        self.assertRaises(IndexError, "{}".format)
-        big = "23098475029384702983476098230754973209482573"
-        self.assertRaises(ValueError, ("{" + big + "}").format)
-        self.assertRaises(ValueError, ("{[" + big + "]}").format, [0])
-
-        # test number formatter errors:
-        self.assertRaises(ValueError, '{0:x}'.format, 1j)
-        self.assertRaises(ValueError, '{0:x}'.format, 1.0)
-        self.assertRaises(ValueError, '{0:X}'.format, 1j)
-        self.assertRaises(ValueError, '{0:X}'.format, 1.0)
-        self.assertRaises(ValueError, '{0:o}'.format, 1j)
-        self.assertRaises(ValueError, '{0:o}'.format, 1.0)
-        self.assertRaises(ValueError, '{0:u}'.format, 1j)
-        self.assertRaises(ValueError, '{0:u}'.format, 1.0)
-        self.assertRaises(ValueError, '{0:i}'.format, 1j)
-        self.assertRaises(ValueError, '{0:i}'.format, 1.0)
-        self.assertRaises(ValueError, '{0:d}'.format, 1j)
-        self.assertRaises(ValueError, '{0:d}'.format, 1.0)
-
-        # issue 6089
-        self.assertRaises(ValueError, "{0[0]x}".format, [None])
-        self.assertRaises(ValueError, "{0[0](10)}".format, [None])
-
-        # can't have a replacement on the field name portion
-        self.assertRaises(TypeError, '{0[{1}]}'.format, 'abcdefg', 4)
-
-        # exceed maximum recursion depth
-        self.assertRaises(ValueError, "{0:{1:{2}}}".format, 'abc', 's', '')
-        self.assertRaises(ValueError, "{0:{1:{2:{3:{4:{5:{6}}}}}}}".format,
-                          0, 1, 2, 3, 4, 5, 6, 7)
-
-        # string format spec errors
-        sign_msg = "Sign not allowed in string format specifier"
-        self.assertRaisesRegex(ValueError, sign_msg, "{0:-s}".format, '')
-        self.assertRaisesRegex(ValueError, sign_msg, format, "", "-")
-        space_msg = "Space not allowed in string format specifier"
-        self.assertRaisesRegex(ValueError, space_msg, "{: }".format, '')
-        self.assertRaises(ValueError, "{0:=s}".format, '')
-
-        # Alternate formatting is not supported
-        self.assertRaises(ValueError, format, '', '#')
-        self.assertRaises(ValueError, format, '', '#20')
-
-        # Non-ASCII
-        self.assertEqual("{0:s}{1:s}".format("ABC", "\u0410\u0411\u0412"),
-                         'ABC\u0410\u0411\u0412')
-        self.assertEqual("{0:.3s}".format("ABC\u0410\u0411\u0412"),
-                         'ABC')
-        self.assertEqual("{0:.0s}".format("ABC\u0410\u0411\u0412"),
-                         '')
-
-        self.assertEqual("{[{}]}".format({"{}": 5}), "5")
-        self.assertEqual("{[{}]}".format({"{}" : "a"}), "a")
-        self.assertEqual("{[{]}".format({"{" : "a"}), "a")
-        self.assertEqual("{[}]}".format({"}" : "a"}), "a")
-        self.assertEqual("{[[]}".format({"[" : "a"}), "a")
-        self.assertEqual("{[!]}".format({"!" : "a"}), "a")
-        self.assertRaises(ValueError, "{a{}b}".format, 42)
-        self.assertRaises(ValueError, "{a{b}".format, 42)
-        self.assertRaises(ValueError, "{[}".format, 42)
-
-        self.assertEqual("0x{:0{:d}X}".format(0x0,16), "0x0000000000000000")
-
-        # Blocking fallback
-        m = M('data')
-        self.assertEqual("{!r}".format(m), 'M(data)')
-        self.assertRaises(TypeError, "{!s}".format, m)
-        self.assertRaises(TypeError, "{}".format, m)
-        n = N('data')
-        self.assertEqual("{!r}".format(n), 'N(data)')
-        self.assertEqual("{!s}".format(n), 'N(data)')
-        self.assertRaises(TypeError, "{}".format, n)
-
-    def test_format_map(self):
-        self.assertEqual(''.format_map({}), '')
-        self.assertEqual('a'.format_map({}), 'a')
-        self.assertEqual('ab'.format_map({}), 'ab')
-        self.assertEqual('a{{'.format_map({}), 'a{')
-        self.assertEqual('a}}'.format_map({}), 'a}')
-        self.assertEqual('{{b'.format_map({}), '{b')
-        self.assertEqual('}}b'.format_map({}), '}b')
-        self.assertEqual('a{{b'.format_map({}), 'a{b')
-
-        # using mappings
-        class Mapping(dict):
-            def __missing__(self, key):
-                return key
-        self.assertEqual('{hello}'.format_map(Mapping()), 'hello')
-        self.assertEqual('{a} {world}'.format_map(Mapping(a='hello')), 'hello world')
-
-        class InternalMapping:
-            def __init__(self):
-                self.mapping = {'a': 'hello'}
-            def __getitem__(self, key):
-                return self.mapping[key]
-        self.assertEqual('{a}'.format_map(InternalMapping()), 'hello')
-
-
-        class C:
-            def __init__(self, x=100):
-                self._x = x
-            def __format__(self, spec):
-                return spec
-        self.assertEqual('{foo._x}'.format_map({'foo': C(20)}), '20')
-
-        # test various errors
-        self.assertRaises(TypeError, ''.format_map)
-        self.assertRaises(TypeError, 'a'.format_map)
-
-        self.assertRaises(ValueError, '{'.format_map, {})
-        self.assertRaises(ValueError, '}'.format_map, {})
-        self.assertRaises(ValueError, 'a{'.format_map, {})
-        self.assertRaises(ValueError, 'a}'.format_map, {})
-        self.assertRaises(ValueError, '{a'.format_map, {})
-        self.assertRaises(ValueError, '}a'.format_map, {})
-
-        # issue #12579: can't supply positional params to format_map
-        self.assertRaises(ValueError, '{}'.format_map, {'a' : 2})
-        self.assertRaises(ValueError, '{}'.format_map, 'a')
-        self.assertRaises(ValueError, '{a} {}'.format_map, {"a" : 2, "b" : 1})
-
-        class BadMapping:
-            def __getitem__(self, key):
-                return 1/0
-        self.assertRaises(KeyError, '{a}'.format_map, {})
-        self.assertRaises(TypeError, '{a}'.format_map, [])
-        self.assertRaises(ZeroDivisionError, '{a}'.format_map, BadMapping())
-
-    def test_format_huge_precision(self):
-        format_string = ".{}f".format(sys.maxsize + 1)
-        with self.assertRaises(ValueError):
-            result = format(2.34, format_string)
-
-    def test_format_huge_width(self):
-        format_string = "{}f".format(sys.maxsize + 1)
-        with self.assertRaises(ValueError):
-            result = format(2.34, format_string)
-
-    def test_format_huge_item_number(self):
-        format_string = "{{{}:.6f}}".format(sys.maxsize + 1)
-        with self.assertRaises(ValueError):
-            result = format_string.format(2.34)
-
-    def test_format_auto_numbering(self):
-        class C:
-            def __init__(self, x=100):
-                self._x = x
-            def __format__(self, spec):
-                return spec
-
-        self.assertEqual('{}'.format(10), '10')
-        self.assertEqual('{:5}'.format('s'), 's    ')
-        self.assertEqual('{!r}'.format('s'), "'s'")
-        self.assertEqual('{._x}'.format(C(10)), '10')
-        self.assertEqual('{[1]}'.format([1, 2]), '2')
-        self.assertEqual('{[a]}'.format({'a':4, 'b':2}), '4')
-        self.assertEqual('a{}b{}c'.format(0, 1), 'a0b1c')
-
-        self.assertEqual('a{:{}}b'.format('x', '^10'), 'a    x     b')
-        self.assertEqual('a{:{}x}b'.format(20, '#'), 'a0x14b')
-
-        # can't mix and match numbering and auto-numbering
-        self.assertRaises(ValueError, '{}{1}'.format, 1, 2)
-        self.assertRaises(ValueError, '{1}{}'.format, 1, 2)
-        self.assertRaises(ValueError, '{:{1}}'.format, 1, 2)
-        self.assertRaises(ValueError, '{0:{}}'.format, 1, 2)
-
-        # can mix and match auto-numbering and named
-        self.assertEqual('{f}{}'.format(4, f='test'), 'test4')
-        self.assertEqual('{}{f}'.format(4, f='test'), '4test')
-        self.assertEqual('{:{f}}{g}{}'.format(1, 3, g='g', f=2), ' 1g3')
-        self.assertEqual('{f:{}}{}{g}'.format(2, 4, f=1, g='g'), ' 14g')
-
-    def test_formatting(self):
-        string_tests.MixinStrUnicodeUserStringTest.test_formatting(self)
-        # Testing Unicode formatting strings...
-        self.assertEqual("%s, %s" % ("abc", "abc"), 'abc, abc')
-        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", 1, 2, 3), 'abc, abc, 1, 2.000000,  3.00')
-        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", 1, -2, 3), 'abc, abc, 1, -2.000000,  3.00')
-        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", -1, -2, 3.5), 'abc, abc, -1, -2.000000,  3.50')
-        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", -1, -2, 3.57), 'abc, abc, -1, -2.000000,  3.57')
-        self.assertEqual("%s, %s, %i, %f, %5.2f" % ("abc", "abc", -1, -2, 1003.57), 'abc, abc, -1, -2.000000, 1003.57')
-        self.assertEqual("%r, %r" % (b"abc", "abc"), "b'abc', 'abc'")
-        self.assertEqual("%r" % ("\u1234",), "'\u1234'")
-        self.assertEqual("%a" % ("\u1234",), "'\\u1234'")
-        self.assertEqual("%(x)s, %(y)s" % {'x':"abc", 'y':"def"}, 'abc, def')
-        self.assertEqual("%(x)s, %(\xfc)s" % {'x':"abc", '\xfc':"def"}, 'abc, def')
-
-        self.assertEqual('%c' % 0x1234, '\u1234')
-        self.assertEqual('%c' % 0x21483, '\U00021483')
-        self.assertRaises(OverflowError, "%c".__mod__, (0x110000,))
-        self.assertEqual('%c' % '\U00021483', '\U00021483')
-        self.assertRaises(TypeError, "%c".__mod__, "aa")
-        self.assertRaises(ValueError, "%.1\u1032f".__mod__, (1.0/3))
-        self.assertRaises(TypeError, "%i".__mod__, "aa")
-
-        # formatting jobs delegated from the string implementation:
-        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
-        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
-        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
-        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')
-        self.assertEqual('...%(foo)s...' % {'foo':"abc",'def':123},  '...abc...')
-        self.assertEqual('...%(foo)s...' % {'foo':"abc",'def':123}, '...abc...')
-        self.assertEqual('...%s...%s...%s...%s...' % (1,2,3,"abc"), '...1...2...3...abc...')
-        self.assertEqual('...%%...%%s...%s...%s...%s...%s...' % (1,2,3,"abc"), '...%...%s...1...2...3...abc...')
-        self.assertEqual('...%s...' % "abc", '...abc...')
-        self.assertEqual('%*s' % (5,'abc',), '  abc')
-        self.assertEqual('%*s' % (-5,'abc',), 'abc  ')
-        self.assertEqual('%*.*s' % (5,2,'abc',), '   ab')
-        self.assertEqual('%*.*s' % (5,3,'abc',), '  abc')
-        self.assertEqual('%i %*.*s' % (10, 5,3,'abc',), '10   abc')
-        self.assertEqual('%i%s %*.*s' % (10, 3, 5, 3, 'abc',), '103   abc')
-        self.assertEqual('%c' % 'a', 'a')
-        class Wrapper:
-            def __str__(self):
-                return '\u1234'
-        self.assertEqual('%s' % Wrapper(), '\u1234')
-
-        # issue 3382
-        NAN = float('nan')
-        INF = float('inf')
-        self.assertEqual('%f' % NAN, 'nan')
-        self.assertEqual('%F' % NAN, 'NAN')
-        self.assertEqual('%f' % INF, 'inf')
-        self.assertEqual('%F' % INF, 'INF')
-
-        # PEP 393
-        self.assertEqual('%.1s' % "a\xe9\u20ac", 'a')
-        self.assertEqual('%.2s' % "a\xe9\u20ac", 'a\xe9')
-
-        #issue 19995
-        class PseudoInt:
-            def __init__(self, value):
-                self.value = int(value)
-            def __int__(self):
-                return self.value
-            def __index__(self):
-                return self.value
-        class PseudoFloat:
-            def __init__(self, value):
-                self.value = float(value)
-            def __int__(self):
-                return int(self.value)
-        pi = PseudoFloat(3.1415)
-        letter_m = PseudoInt(109)
-        self.assertEqual('%x' % 42, '2a')
-        self.assertEqual('%X' % 15, 'F')
-        self.assertEqual('%o' % 9, '11')
-        self.assertEqual('%c' % 109, 'm')
-        self.assertEqual('%x' % letter_m, '6d')
-        self.assertEqual('%X' % letter_m, '6D')
-        self.assertEqual('%o' % letter_m, '155')
-        self.assertEqual('%c' % letter_m, 'm')
-        self.assertRaisesRegex(TypeError, '%x format: an integer is required, not float', operator.mod, '%x', 3.14)
-        self.assertRaisesRegex(TypeError, '%X format: an integer is required, not float', operator.mod, '%X', 2.11)
-        self.assertRaisesRegex(TypeError, '%o format: an integer is required, not float', operator.mod, '%o', 1.79)
-        self.assertRaisesRegex(TypeError, '%x format: an integer is required, not PseudoFloat', operator.mod, '%x', pi)
-        self.assertRaisesRegex(TypeError, '%x format: an integer is required, not complex', operator.mod, '%x', 3j)
-        self.assertRaisesRegex(TypeError, '%X format: an integer is required, not complex', operator.mod, '%X', 2j)
-        self.assertRaisesRegex(TypeError, '%o format: an integer is required, not complex', operator.mod, '%o', 1j)
-        self.assertRaisesRegex(TypeError, '%u format: a real number is required, not complex', operator.mod, '%u', 3j)
-        self.assertRaisesRegex(TypeError, '%i format: a real number is required, not complex', operator.mod, '%i', 2j)
-        self.assertRaisesRegex(TypeError, '%d format: a real number is required, not complex', operator.mod, '%d', 1j)
-        self.assertRaisesRegex(TypeError, '%c requires int or char', operator.mod, '%c', pi)
-
-        class RaisingNumber:
-            def __int__(self):
-                raise RuntimeError('int')  # should not be `TypeError`
-            def __index__(self):
-                raise RuntimeError('index')  # should not be `TypeError`
-
-        rn = RaisingNumber()
-        self.assertRaisesRegex(RuntimeError, 'int', operator.mod, '%d', rn)
-        self.assertRaisesRegex(RuntimeError, 'int', operator.mod, '%i', rn)
-        self.assertRaisesRegex(RuntimeError, 'int', operator.mod, '%u', rn)
-        self.assertRaisesRegex(RuntimeError, 'index', operator.mod, '%x', rn)
-        self.assertRaisesRegex(RuntimeError, 'index', operator.mod, '%X', rn)
-        self.assertRaisesRegex(RuntimeError, 'index', operator.mod, '%o', rn)
-
-    def test_formatting_with_enum(self):
-        # issue18780
-        import enum
-        class Float(float, enum.Enum):
-            # a mixed-in type will use the name for %s etc.
-            PI = 3.1415926
-        class Int(enum.IntEnum):
-            # IntEnum uses the value and not the name for %s etc.
-            IDES = 15
-        class Str(enum.StrEnum):
-            # StrEnum uses the value and not the name for %s etc.
-            ABC = 'abc'
-        # Testing Unicode formatting strings...
-        self.assertEqual("%s, %s" % (Str.ABC, Str.ABC),
-                         'abc, abc')
-        self.assertEqual("%s, %s, %d, %i, %u, %f, %5.2f" %
-                        (Str.ABC, Str.ABC,
-                         Int.IDES, Int.IDES, Int.IDES,
-                         Float.PI, Float.PI),
-                         'abc, abc, 15, 15, 15, 3.141593,  3.14')
-
-        # formatting jobs delegated from the string implementation:
-        self.assertEqual('...%(foo)s...' % {'foo':Str.ABC},
-                         '...abc...')
-        self.assertEqual('...%(foo)r...' % {'foo':Int.IDES},
-                         '...<Int.IDES: 15>...')
-        self.assertEqual('...%(foo)s...' % {'foo':Int.IDES},
-                         '...15...')
-        self.assertEqual('...%(foo)i...' % {'foo':Int.IDES},
-                         '...15...')
-        self.assertEqual('...%(foo)d...' % {'foo':Int.IDES},
-                         '...15...')
-        self.assertEqual('...%(foo)u...' % {'foo':Int.IDES, 'def':Float.PI},
-                         '...15...')
-        self.assertEqual('...%(foo)f...' % {'foo':Float.PI,'def':123},
-                         '...3.141593...')
-
-    def test_formatting_huge_precision(self):
-        format_string = "%.{}f".format(sys.maxsize + 1)
-        with self.assertRaises(ValueError):
-            result = format_string % 2.34
-
-    def test_issue28598_strsubclass_rhs(self):
-        # A subclass of str with an __rmod__ method should be able to hook
-        # into the % operator
-        class SubclassedStr(str):
-            def __rmod__(self, other):
-                return 'Success, self.__rmod__({!r}) was called'.format(other)
-        self.assertEqual('lhs %% %r' % SubclassedStr('rhs'),
-                         "Success, self.__rmod__('lhs %% %r') was called")
-
-    @support.cpython_only
-    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
-    def test_formatting_huge_precision_c_limits(self):
-        format_string = "%.{}f".format(_testcapi.INT_MAX + 1)
-        with self.assertRaises(ValueError):
-            result = format_string % 2.34
-
-    def test_formatting_huge_width(self):
-        format_string = "%{}f".format(sys.maxsize + 1)
-        with self.assertRaises(ValueError):
-            result = format_string % 2.34
-
-    def test_startswith_endswith_errors(self):
-        for meth in ('foo'.startswith, 'foo'.endswith):
-            with self.assertRaises(TypeError) as cm:
-                meth(['f'])
-            exc = str(cm.exception)
-            self.assertIn('str', exc)
-            self.assertIn('tuple', exc)
-
-    @support.run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
-    def test_format_float(self):
-        # should not format with a comma, but always with C locale
-        self.assertEqual('1.0', '%.1f' % 1.0)
-
-    def test_constructor(self):
-        # unicode(obj) tests (this maps to PyObject_Unicode() at C level)
-
-        self.assertEqual(
-            str('unicode remains unicode'),
-            'unicode remains unicode'
-        )
-
-        for text in ('ascii', '\xe9', '\u20ac', '\U0010FFFF'):
-            subclass = StrSubclass(text)
-            self.assertEqual(str(subclass), text)
-            self.assertEqual(len(subclass), len(text))
-            if text == 'ascii':
-                self.assertEqual(subclass.encode('ascii'), b'ascii')
-                self.assertEqual(subclass.encode('utf-8'), b'ascii')
-
-        self.assertEqual(
-            str('strings are converted to unicode'),
-            'strings are converted to unicode'
-        )
-
-        class StringCompat:
-            def __init__(self, x):
-                self.x = x
-            def __str__(self):
-                return self.x
-
-        self.assertEqual(
-            str(StringCompat('__str__ compatible objects are recognized')),
-            '__str__ compatible objects are recognized'
-        )
-
-        # unicode(obj) is compatible to str():
-
-        o = StringCompat('unicode(obj) is compatible to str()')
-        self.assertEqual(str(o), 'unicode(obj) is compatible to str()')
-        self.assertEqual(str(o), 'unicode(obj) is compatible to str()')
-
-        for obj in (123, 123.45, 123):
-            self.assertEqual(str(obj), str(str(obj)))
-
-        # unicode(obj, encoding, error) tests (this maps to
-        # PyUnicode_FromEncodedObject() at C level)
-
-        self.assertRaises(
-            TypeError,
-            str,
-            'decoding unicode is not supported',
-            'utf-8',
-            'strict'
-        )
-
-        self.assertEqual(
-            str(b'strings are decoded to unicode', 'utf-8', 'strict'),
-            'strings are decoded to unicode'
-        )
-
-        self.assertEqual(
-            str(
-                memoryview(b'character buffers are decoded to unicode'),
-                'utf-8',
-                'strict'
-            ),
-            'character buffers are decoded to unicode'
-        )
-
-        self.assertRaises(TypeError, str, 42, 42, 42)
-
-    def test_constructor_keyword_args(self):
-        """Pass various keyword argument combinations to the constructor."""
-        # The object argument can be passed as a keyword.
-        self.assertEqual(str(object='foo'), 'foo')
-        self.assertEqual(str(object=b'foo', encoding='utf-8'), 'foo')
-        # The errors argument without encoding triggers "decode" mode.
-        self.assertEqual(str(b'foo', errors='strict'), 'foo')  # not "b'foo'"
-        self.assertEqual(str(object=b'foo', errors='strict'), 'foo')
-
-    def test_constructor_defaults(self):
-        """Check the constructor argument defaults."""
-        # The object argument defaults to '' or b''.
-        self.assertEqual(str(), '')
-        self.assertEqual(str(errors='strict'), '')
-        utf8_cent = '¢'.encode('utf-8')
-        # The encoding argument defaults to utf-8.
-        self.assertEqual(str(utf8_cent, errors='strict'), '¢')
-        # The errors argument defaults to strict.
-        self.assertRaises(UnicodeDecodeError, str, utf8_cent, encoding='ascii')
-
-    def test_codecs_utf7(self):
-        utfTests = [
-            ('A\u2262\u0391.', b'A+ImIDkQ.'),             # RFC2152 example
-            ('Hi Mom -\u263a-!', b'Hi Mom -+Jjo--!'),     # RFC2152 example
-            ('\u65E5\u672C\u8A9E', b'+ZeVnLIqe-'),        # RFC2152 example
-            ('Item 3 is \u00a31.', b'Item 3 is +AKM-1.'), # RFC2152 example
-            ('+', b'+-'),
-            ('+-', b'+--'),
-            ('+?', b'+-?'),
-            (r'\?', b'+AFw?'),
-            ('+?', b'+-?'),
-            (r'\\?', b'+AFwAXA?'),
-            (r'\\\?', b'+AFwAXABc?'),
-            (r'++--', b'+-+---'),
-            ('\U000abcde', b'+2m/c3g-'),                  # surrogate pairs
-            ('/', b'/'),
-        ]
-
-        for (x, y) in utfTests:
-            self.assertEqual(x.encode('utf-7'), y)
-
-        # Unpaired surrogates are passed through
-        self.assertEqual('\uD801'.encode('utf-7'), b'+2AE-')
-        self.assertEqual('\uD801x'.encode('utf-7'), b'+2AE-x')
-        self.assertEqual('\uDC01'.encode('utf-7'), b'+3AE-')
-        self.assertEqual('\uDC01x'.encode('utf-7'), b'+3AE-x')
-        self.assertEqual(b'+2AE-'.decode('utf-7'), '\uD801')
-        self.assertEqual(b'+2AE-x'.decode('utf-7'), '\uD801x')
-        self.assertEqual(b'+3AE-'.decode('utf-7'), '\uDC01')
-        self.assertEqual(b'+3AE-x'.decode('utf-7'), '\uDC01x')
-
-        self.assertEqual('\uD801\U000abcde'.encode('utf-7'), b'+2AHab9ze-')
-        self.assertEqual(b'+2AHab9ze-'.decode('utf-7'), '\uD801\U000abcde')
-
-        # Issue #2242: crash on some Windows/MSVC versions
-        self.assertEqual(b'+\xc1'.decode('utf-7', 'ignore'), '')
-
-        # Direct encoded characters
-        set_d = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'(),-./:?"
-        # Optional direct characters
-        set_o = '!"#$%&*;<=>@[]^_`{|}'
-        for c in set_d:
-            self.assertEqual(c.encode('utf7'), c.encode('ascii'))
-            self.assertEqual(c.encode('ascii').decode('utf7'), c)
-        for c in set_o:
-            self.assertEqual(c.encode('ascii').decode('utf7'), c)
-
-        with self.assertRaisesRegex(UnicodeDecodeError,
-                                    'ill-formed sequence'):
-            b'+@'.decode('utf-7')
-
-    def test_codecs_utf8(self):
-        self.assertEqual(''.encode('utf-8'), b'')
-        self.assertEqual('\u20ac'.encode('utf-8'), b'\xe2\x82\xac')
-        self.assertEqual('\U00010002'.encode('utf-8'), b'\xf0\x90\x80\x82')
-        self.assertEqual('\U00023456'.encode('utf-8'), b'\xf0\xa3\x91\x96')
-        self.assertEqual('\ud800'.encode('utf-8', 'surrogatepass'), b'\xed\xa0\x80')
-        self.assertEqual('\udc00'.encode('utf-8', 'surrogatepass'), b'\xed\xb0\x80')
-        self.assertEqual(('\U00010002'*10).encode('utf-8'),
-                         b'\xf0\x90\x80\x82'*10)
-        self.assertEqual(
-            '\u6b63\u78ba\u306b\u8a00\u3046\u3068\u7ffb\u8a33\u306f'
-            '\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4e00'
-            '\u90e8\u306f\u30c9\u30a4\u30c4\u8a9e\u3067\u3059\u304c'
-            '\u3001\u3042\u3068\u306f\u3067\u305f\u3089\u3081\u3067'
-            '\u3059\u3002\u5b9f\u969b\u306b\u306f\u300cWenn ist das'
-            ' Nunstuck git und'.encode('utf-8'),
-            b'\xe6\xad\xa3\xe7\xa2\xba\xe3\x81\xab\xe8\xa8\x80\xe3\x81'
-            b'\x86\xe3\x81\xa8\xe7\xbf\xbb\xe8\xa8\xb3\xe3\x81\xaf\xe3'
-            b'\x81\x95\xe3\x82\x8c\xe3\x81\xa6\xe3\x81\x84\xe3\x81\xbe'
-            b'\xe3\x81\x9b\xe3\x82\x93\xe3\x80\x82\xe4\xb8\x80\xe9\x83'
-            b'\xa8\xe3\x81\xaf\xe3\x83\x89\xe3\x82\xa4\xe3\x83\x84\xe8'
-            b'\xaa\x9e\xe3\x81\xa7\xe3\x81\x99\xe3\x81\x8c\xe3\x80\x81'
-            b'\xe3\x81\x82\xe3\x81\xa8\xe3\x81\xaf\xe3\x81\xa7\xe3\x81'
-            b'\x9f\xe3\x82\x89\xe3\x82\x81\xe3\x81\xa7\xe3\x81\x99\xe3'
-            b'\x80\x82\xe5\xae\x9f\xe9\x9a\x9b\xe3\x81\xab\xe3\x81\xaf'
-            b'\xe3\x80\x8cWenn ist das Nunstuck git und'
-        )
-
-        # UTF-8 specific decoding tests
-        self.assertEqual(str(b'\xf0\xa3\x91\x96', 'utf-8'), '\U00023456' )
-        self.assertEqual(str(b'\xf0\x90\x80\x82', 'utf-8'), '\U00010002' )
-        self.assertEqual(str(b'\xe2\x82\xac', 'utf-8'), '\u20ac' )
-
-        # Other possible utf-8 test cases:
-        # * strict decoding testing for all of the
-        #   UTF8_ERROR cases in PyUnicode_DecodeUTF8
-
-    def test_utf8_decode_valid_sequences(self):
-        sequences = [
-            # single byte
-            (b'\x00', '\x00'), (b'a', 'a'), (b'\x7f', '\x7f'),
-            # 2 bytes
-            (b'\xc2\x80', '\x80'), (b'\xdf\xbf', '\u07ff'),
-            # 3 bytes
-            (b'\xe0\xa0\x80', '\u0800'), (b'\xed\x9f\xbf', '\ud7ff'),
-            (b'\xee\x80\x80', '\uE000'), (b'\xef\xbf\xbf', '\uffff'),
-            # 4 bytes
-            (b'\xF0\x90\x80\x80', '\U00010000'),
-            (b'\xf4\x8f\xbf\xbf', '\U0010FFFF')
-        ]
-        for seq, res in sequences:
-            self.assertEqual(seq.decode('utf-8'), res)
-
-
-    def test_utf8_decode_invalid_sequences(self):
-        # continuation bytes in a sequence of 2, 3, or 4 bytes
-        continuation_bytes = [bytes([x]) for x in range(0x80, 0xC0)]
-        # start bytes of a 2-byte sequence equivalent to code points < 0x7F
-        invalid_2B_seq_start_bytes = [bytes([x]) for x in range(0xC0, 0xC2)]
-        # start bytes of a 4-byte sequence equivalent to code points > 0x10FFFF
-        invalid_4B_seq_start_bytes = [bytes([x]) for x in range(0xF5, 0xF8)]
-        invalid_start_bytes = (
-            continuation_bytes + invalid_2B_seq_start_bytes +
-            invalid_4B_seq_start_bytes + [bytes([x]) for x in range(0xF7, 0x100)]
-        )
-
-        for byte in invalid_start_bytes:
-            self.assertRaises(UnicodeDecodeError, byte.decode, 'utf-8')
-
-        for sb in invalid_2B_seq_start_bytes:
-            for cb in continuation_bytes:
-                self.assertRaises(UnicodeDecodeError, (sb+cb).decode, 'utf-8')
-
-        for sb in invalid_4B_seq_start_bytes:
-            for cb1 in continuation_bytes[:3]:
-                for cb3 in continuation_bytes[:3]:
-                    self.assertRaises(UnicodeDecodeError,
-                                      (sb+cb1+b'\x80'+cb3).decode, 'utf-8')
-
-        for cb in [bytes([x]) for x in range(0x80, 0xA0)]:
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xE0'+cb+b'\x80').decode, 'utf-8')
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xE0'+cb+b'\xBF').decode, 'utf-8')
-        # surrogates
-        for cb in [bytes([x]) for x in range(0xA0, 0xC0)]:
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xED'+cb+b'\x80').decode, 'utf-8')
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xED'+cb+b'\xBF').decode, 'utf-8')
-        for cb in [bytes([x]) for x in range(0x80, 0x90)]:
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xF0'+cb+b'\x80\x80').decode, 'utf-8')
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xF0'+cb+b'\xBF\xBF').decode, 'utf-8')
-        for cb in [bytes([x]) for x in range(0x90, 0xC0)]:
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xF4'+cb+b'\x80\x80').decode, 'utf-8')
-            self.assertRaises(UnicodeDecodeError,
-                              (b'\xF4'+cb+b'\xBF\xBF').decode, 'utf-8')
-
-    def test_issue8271(self):
-        # Issue #8271: during the decoding of an invalid UTF-8 byte sequence,
-        # only the start byte and the continuation byte(s) are now considered
-        # invalid, instead of the number of bytes specified by the start byte.
-        # See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf (page 95,
-        # table 3-8, Row 2) for more information about the algorithm used.
-        FFFD = '\ufffd'
-        sequences = [
-            # invalid start bytes
-            (b'\x80', FFFD), # continuation byte
-            (b'\x80\x80', FFFD*2), # 2 continuation bytes
-            (b'\xc0', FFFD),
-            (b'\xc0\xc0', FFFD*2),
-            (b'\xc1', FFFD),
-            (b'\xc1\xc0', FFFD*2),
-            (b'\xc0\xc1', FFFD*2),
-            # with start byte of a 2-byte sequence
-            (b'\xc2', FFFD), # only the start byte
-            (b'\xc2\xc2', FFFD*2), # 2 start bytes
-            (b'\xc2\xc2\xc2', FFFD*3), # 3 start bytes
-            (b'\xc2\x41', FFFD+'A'), # invalid continuation byte
-            # with start byte of a 3-byte sequence
-            (b'\xe1', FFFD), # only the start byte
-            (b'\xe1\xe1', FFFD*2), # 2 start bytes
-            (b'\xe1\xe1\xe1', FFFD*3), # 3 start bytes
-            (b'\xe1\xe1\xe1\xe1', FFFD*4), # 4 start bytes
-            (b'\xe1\x80', FFFD), # only 1 continuation byte
-            (b'\xe1\x41', FFFD+'A'), # invalid continuation byte
-            (b'\xe1\x41\x80', FFFD+'A'+FFFD), # invalid cb followed by valid cb
-            (b'\xe1\x41\x41', FFFD+'AA'), # 2 invalid continuation bytes
-            (b'\xe1\x80\x41', FFFD+'A'), # only 1 valid continuation byte
-            (b'\xe1\x80\xe1\x41', FFFD*2+'A'), # 1 valid and the other invalid
-            (b'\xe1\x41\xe1\x80', FFFD+'A'+FFFD), # 1 invalid and the other valid
-            # with start byte of a 4-byte sequence
-            (b'\xf1', FFFD), # only the start byte
-            (b'\xf1\xf1', FFFD*2), # 2 start bytes
-            (b'\xf1\xf1\xf1', FFFD*3), # 3 start bytes
-            (b'\xf1\xf1\xf1\xf1', FFFD*4), # 4 start bytes
-            (b'\xf1\xf1\xf1\xf1\xf1', FFFD*5), # 5 start bytes
-            (b'\xf1\x80', FFFD), # only 1 continuation bytes
-            (b'\xf1\x80\x80', FFFD), # only 2 continuation bytes
-            (b'\xf1\x80\x41', FFFD+'A'), # 1 valid cb and 1 invalid
-            (b'\xf1\x80\x41\x41', FFFD+'AA'), # 1 valid cb and 1 invalid
-            (b'\xf1\x80\x80\x41', FFFD+'A'), # 2 valid cb and 1 invalid
-            (b'\xf1\x41\x80', FFFD+'A'+FFFD), # 1 invalid cv and 1 valid
-            (b'\xf1\x41\x80\x80', FFFD+'A'+FFFD*2), # 1 invalid cb and 2 invalid
-            (b'\xf1\x41\x80\x41', FFFD+'A'+FFFD+'A'), # 2 invalid cb and 1 invalid
-            (b'\xf1\x41\x41\x80', FFFD+'AA'+FFFD), # 1 valid cb and 1 invalid
-            (b'\xf1\x41\xf1\x80', FFFD+'A'+FFFD),
-            (b'\xf1\x41\x80\xf1', FFFD+'A'+FFFD*2),
-            (b'\xf1\xf1\x80\x41', FFFD*2+'A'),
-            (b'\xf1\x41\xf1\xf1', FFFD+'A'+FFFD*2),
-            # with invalid start byte of a 4-byte sequence (rfc2279)
-            (b'\xf5', FFFD), # only the start byte
-            (b'\xf5\xf5', FFFD*2), # 2 start bytes
-            (b'\xf5\x80', FFFD*2), # only 1 continuation byte
-            (b'\xf5\x80\x80', FFFD*3), # only 2 continuation byte
-            (b'\xf5\x80\x80\x80', FFFD*4), # 3 continuation bytes
-            (b'\xf5\x80\x41', FFFD*2+'A'), #  1 valid cb and 1 invalid
-            (b'\xf5\x80\x41\xf5', FFFD*2+'A'+FFFD),
-            (b'\xf5\x41\x80\x80\x41', FFFD+'A'+FFFD*2+'A'),
-            # with invalid start byte of a 5-byte sequence (rfc2279)
-            (b'\xf8', FFFD), # only the start byte
-            (b'\xf8\xf8', FFFD*2), # 2 start bytes
-            (b'\xf8\x80', FFFD*2), # only one continuation byte
-            (b'\xf8\x80\x41', FFFD*2 + 'A'), # 1 valid cb and 1 invalid
-            (b'\xf8\x80\x80\x80\x80', FFFD*5), # invalid 5 bytes seq with 5 bytes
-            # with invalid start byte of a 6-byte sequence (rfc2279)
-            (b'\xfc', FFFD), # only the start byte
-            (b'\xfc\xfc', FFFD*2), # 2 start bytes
-            (b'\xfc\x80\x80', FFFD*3), # only 2 continuation bytes
-            (b'\xfc\x80\x80\x80\x80\x80', FFFD*6), # 6 continuation bytes
-            # invalid start byte
-            (b'\xfe', FFFD),
-            (b'\xfe\x80\x80', FFFD*3),
-            # other sequences
-            (b'\xf1\x80\x41\x42\x43', '\ufffd\x41\x42\x43'),
-            (b'\xf1\x80\xff\x42\x43', '\ufffd\ufffd\x42\x43'),
-            (b'\xf1\x80\xc2\x81\x43', '\ufffd\x81\x43'),
-            (b'\x61\xF1\x80\x80\xE1\x80\xC2\x62\x80\x63\x80\xBF\x64',
-             '\x61\uFFFD\uFFFD\uFFFD\x62\uFFFD\x63\uFFFD\uFFFD\x64'),
-        ]
-        for n, (seq, res) in enumerate(sequences):
-            self.assertRaises(UnicodeDecodeError, seq.decode, 'utf-8', 'strict')
-            self.assertEqual(seq.decode('utf-8', 'replace'), res)
-            self.assertEqual((seq+b'b').decode('utf-8', 'replace'), res+'b')
-            self.assertEqual(seq.decode('utf-8', 'ignore'),
-                             res.replace('\uFFFD', ''))
-
-    def assertCorrectUTF8Decoding(self, seq, res, err):
-        """
-        Check that an invalid UTF-8 sequence raises a UnicodeDecodeError when
-        'strict' is used, returns res when 'replace' is used, and that doesn't
-        return anything when 'ignore' is used.
-        """
-        with self.assertRaises(UnicodeDecodeError) as cm:
-            seq.decode('utf-8')
-        exc = cm.exception
-
-        self.assertIn(err, str(exc))
-        self.assertEqual(seq.decode('utf-8', 'replace'), res)
-        self.assertEqual((b'aaaa' + seq + b'bbbb').decode('utf-8', 'replace'),
-                         'aaaa' + res + 'bbbb')
-        res = res.replace('\ufffd', '')
-        self.assertEqual(seq.decode('utf-8', 'ignore'), res)
-        self.assertEqual((b'aaaa' + seq + b'bbbb').decode('utf-8', 'ignore'),
-                          'aaaa' + res + 'bbbb')
-
-    def test_invalid_start_byte(self):
-        """
-        Test that an 'invalid start byte' error is raised when the first byte
-        is not in the ASCII range or is not a valid start byte of a 2-, 3-, or
-        4-bytes sequence. The invalid start byte is replaced with a single
-        U+FFFD when errors='replace'.
-        E.g. <80> is a continuation byte and can appear only after a start byte.
-        """
-        FFFD = '\ufffd'
-        for byte in b'\x80\xA0\x9F\xBF\xC0\xC1\xF5\xFF':
-            self.assertCorrectUTF8Decoding(bytes([byte]), '\ufffd',
-                                           'invalid start byte')
-
-    def test_unexpected_end_of_data(self):
-        """
-        Test that an 'unexpected end of data' error is raised when the string
-        ends after a start byte of a 2-, 3-, or 4-bytes sequence without having
-        enough continuation bytes.  The incomplete sequence is replaced with a
-        single U+FFFD when errors='replace'.
-        E.g. in the sequence <F3 80 80>, F3 is the start byte of a 4-bytes
-        sequence, but it's followed by only 2 valid continuation bytes and the
-        last continuation bytes is missing.
-        Note: the continuation bytes must be all valid, if one of them is
-        invalid another error will be raised.
-        """
-        sequences = [
-            'C2', 'DF',
-            'E0 A0', 'E0 BF', 'E1 80', 'E1 BF', 'EC 80', 'EC BF',
-            'ED 80', 'ED 9F', 'EE 80', 'EE BF', 'EF 80', 'EF BF',
-            'F0 90', 'F0 BF', 'F0 90 80', 'F0 90 BF', 'F0 BF 80', 'F0 BF BF',
-            'F1 80', 'F1 BF', 'F1 80 80', 'F1 80 BF', 'F1 BF 80', 'F1 BF BF',
-            'F3 80', 'F3 BF', 'F3 80 80', 'F3 80 BF', 'F3 BF 80', 'F3 BF BF',
-            'F4 80', 'F4 8F', 'F4 80 80', 'F4 80 BF', 'F4 8F 80', 'F4 8F BF'
-        ]
-        FFFD = '\ufffd'
-        for seq in sequences:
-            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), '\ufffd',
-                                           'unexpected end of data')
-
-    def test_invalid_cb_for_2bytes_seq(self):
-        """
-        Test that an 'invalid continuation byte' error is raised when the
-        continuation byte of a 2-bytes sequence is invalid.  The start byte
-        is replaced by a single U+FFFD and the second byte is handled
-        separately when errors='replace'.
-        E.g. in the sequence <C2 41>, C2 is the start byte of a 2-bytes
-        sequence, but 41 is not a valid continuation byte because it's the
-        ASCII letter 'A'.
-        """
-        FFFD = '\ufffd'
-        FFFDx2 = FFFD * 2
-        sequences = [
-            ('C2 00', FFFD+'\x00'), ('C2 7F', FFFD+'\x7f'),
-            ('C2 C0', FFFDx2), ('C2 FF', FFFDx2),
-            ('DF 00', FFFD+'\x00'), ('DF 7F', FFFD+'\x7f'),
-            ('DF C0', FFFDx2), ('DF FF', FFFDx2),
-        ]
-        for seq, res in sequences:
-            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), res,
-                                           'invalid continuation byte')
-
-    def test_invalid_cb_for_3bytes_seq(self):
-        """
-        Test that an 'invalid continuation byte' error is raised when the
-        continuation byte(s) of a 3-bytes sequence are invalid.  When
-        errors='replace', if the first continuation byte is valid, the first
-        two bytes (start byte + 1st cb) are replaced by a single U+FFFD and the
-        third byte is handled separately, otherwise only the start byte is
-        replaced with a U+FFFD and the other continuation bytes are handled
-        separately.
-        E.g. in the sequence <E1 80 41>, E1 is the start byte of a 3-bytes
-        sequence, 80 is a valid continuation byte, but 41 is not a valid cb
-        because it's the ASCII letter 'A'.
-        Note: when the start byte is E0 or ED, the valid ranges for the first
-        continuation byte are limited to A0..BF and 80..9F respectively.
-        Python 2 used to consider all the bytes in range 80..BF valid when the
-        start byte was ED.  This is fixed in Python 3.
-        """
-        FFFD = '\ufffd'
-        FFFDx2 = FFFD * 2
-        sequences = [
-            ('E0 00', FFFD+'\x00'), ('E0 7F', FFFD+'\x7f'), ('E0 80', FFFDx2),
-            ('E0 9F', FFFDx2), ('E0 C0', FFFDx2), ('E0 FF', FFFDx2),
-            ('E0 A0 00', FFFD+'\x00'), ('E0 A0 7F', FFFD+'\x7f'),
-            ('E0 A0 C0', FFFDx2), ('E0 A0 FF', FFFDx2),
-            ('E0 BF 00', FFFD+'\x00'), ('E0 BF 7F', FFFD+'\x7f'),
-            ('E0 BF C0', FFFDx2), ('E0 BF FF', FFFDx2), ('E1 00', FFFD+'\x00'),
-            ('E1 7F', FFFD+'\x7f'), ('E1 C0', FFFDx2), ('E1 FF', FFFDx2),
-            ('E1 80 00', FFFD+'\x00'), ('E1 80 7F', FFFD+'\x7f'),
-            ('E1 80 C0', FFFDx2), ('E1 80 FF', FFFDx2),
-            ('E1 BF 00', FFFD+'\x00'), ('E1 BF 7F', FFFD+'\x7f'),
-            ('E1 BF C0', FFFDx2), ('E1 BF FF', FFFDx2), ('EC 00', FFFD+'\x00'),
-            ('EC 7F', FFFD+'\x7f'), ('EC C0', FFFDx2), ('EC FF', FFFDx2),
-            ('EC 80 00', FFFD+'\x00'), ('EC 80 7F', FFFD+'\x7f'),
-            ('EC 80 C0', FFFDx2), ('EC 80 FF', FFFDx2),
-            ('EC BF 00', FFFD+'\x00'), ('EC BF 7F', FFFD+'\x7f'),
-            ('EC BF C0', FFFDx2), ('EC BF FF', FFFDx2), ('ED 00', FFFD+'\x00'),
-            ('ED 7F', FFFD+'\x7f'),
-            ('ED A0', FFFDx2), ('ED BF', FFFDx2), # see note ^
-            ('ED C0', FFFDx2), ('ED FF', FFFDx2), ('ED 80 00', FFFD+'\x00'),
-            ('ED 80 7F', FFFD+'\x7f'), ('ED 80 C0', FFFDx2),
-            ('ED 80 FF', FFFDx2), ('ED 9F 00', FFFD+'\x00'),
-            ('ED 9F 7F', FFFD+'\x7f'), ('ED 9F C0', FFFDx2),
-            ('ED 9F FF', FFFDx2), ('EE 00', FFFD+'\x00'),
-            ('EE 7F', FFFD+'\x7f'), ('EE C0', FFFDx2), ('EE FF', FFFDx2),
-            ('EE 80 00', FFFD+'\x00'), ('EE 80 7F', FFFD+'\x7f'),
-            ('EE 80 C0', FFFDx2), ('EE 80 FF', FFFDx2),
-            ('EE BF 00', FFFD+'\x00'), ('EE BF 7F', FFFD+'\x7f'),
-            ('EE BF C0', FFFDx2), ('EE BF FF', FFFDx2), ('EF 00', FFFD+'\x00'),
-            ('EF 7F', FFFD+'\x7f'), ('EF C0', FFFDx2), ('EF FF', FFFDx2),
-            ('EF 80 00', FFFD+'\x00'), ('EF 80 7F', FFFD+'\x7f'),
-            ('EF 80 C0', FFFDx2), ('EF 80 FF', FFFDx2),
-            ('EF BF 00', FFFD+'\x00'), ('EF BF 7F', FFFD+'\x7f'),
-            ('EF BF C0', FFFDx2), ('EF BF FF', FFFDx2),
-        ]
-        for seq, res in sequences:
-            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), res,
-                                           'invalid continuation byte')
-
-    def test_invalid_cb_for_4bytes_seq(self):
-        """
-        Test that an 'invalid continuation byte' error is raised when the
-        continuation byte(s) of a 4-bytes sequence are invalid.  When
-        errors='replace',the start byte and all the following valid
-        continuation bytes are replaced with a single U+FFFD, and all the bytes
-        starting from the first invalid continuation bytes (included) are
-        handled separately.
-        E.g. in the sequence <E1 80 41>, E1 is the start byte of a 3-bytes
-        sequence, 80 is a valid continuation byte, but 41 is not a valid cb
-        because it's the ASCII letter 'A'.
-        Note: when the start byte is E0 or ED, the valid ranges for the first
-        continuation byte are limited to A0..BF and 80..9F respectively.
-        However, when the start byte is ED, Python 2 considers all the bytes
-        in range 80..BF valid.  This is fixed in Python 3.
-        """
-        FFFD = '\ufffd'
-        FFFDx2 = FFFD * 2
-        sequences = [
-            ('F0 00', FFFD+'\x00'), ('F0 7F', FFFD+'\x7f'), ('F0 80', FFFDx2),
-            ('F0 8F', FFFDx2), ('F0 C0', FFFDx2), ('F0 FF', FFFDx2),
-            ('F0 90 00', FFFD+'\x00'), ('F0 90 7F', FFFD+'\x7f'),
-            ('F0 90 C0', FFFDx2), ('F0 90 FF', FFFDx2),
-            ('F0 BF 00', FFFD+'\x00'), ('F0 BF 7F', FFFD+'\x7f'),
-            ('F0 BF C0', FFFDx2), ('F0 BF FF', FFFDx2),
-            ('F0 90 80 00', FFFD+'\x00'), ('F0 90 80 7F', FFFD+'\x7f'),
-            ('F0 90 80 C0', FFFDx2), ('F0 90 80 FF', FFFDx2),
-            ('F0 90 BF 00', FFFD+'\x00'), ('F0 90 BF 7F', FFFD+'\x7f'),
-            ('F0 90 BF C0', FFFDx2), ('F0 90 BF FF', FFFDx2),
-            ('F0 BF 80 00', FFFD+'\x00'), ('F0 BF 80 7F', FFFD+'\x7f'),
-            ('F0 BF 80 C0', FFFDx2), ('F0 BF 80 FF', FFFDx2),
-            ('F0 BF BF 00', FFFD+'\x00'), ('F0 BF BF 7F', FFFD+'\x7f'),
-            ('F0 BF BF C0', FFFDx2), ('F0 BF BF FF', FFFDx2),
-            ('F1 00', FFFD+'\x00'), ('F1 7F', FFFD+'\x7f'), ('F1 C0', FFFDx2),
-            ('F1 FF', FFFDx2), ('F1 80 00', FFFD+'\x00'),
-            ('F1 80 7F', FFFD+'\x7f'), ('F1 80 C0', FFFDx2),
-            ('F1 80 FF', FFFDx2), ('F1 BF 00', FFFD+'\x00'),
-            ('F1 BF 7F', FFFD+'\x7f'), ('F1 BF C0', FFFDx2),
-            ('F1 BF FF', FFFDx2), ('F1 80 80 00', FFFD+'\x00'),
-            ('F1 80 80 7F', FFFD+'\x7f'), ('F1 80 80 C0', FFFDx2),
-            ('F1 80 80 FF', FFFDx2), ('F1 80 BF 00', FFFD+'\x00'),
-            ('F1 80 BF 7F', FFFD+'\x7f'), ('F1 80 BF C0', FFFDx2),
-            ('F1 80 BF FF', FFFDx2), ('F1 BF 80 00', FFFD+'\x00'),
-            ('F1 BF 80 7F', FFFD+'\x7f'), ('F1 BF 80 C0', FFFDx2),
-            ('F1 BF 80 FF', FFFDx2), ('F1 BF BF 00', FFFD+'\x00'),
-            ('F1 BF BF 7F', FFFD+'\x7f'), ('F1 BF BF C0', FFFDx2),
-            ('F1 BF BF FF', FFFDx2), ('F3 00', FFFD+'\x00'),
-            ('F3 7F', FFFD+'\x7f'), ('F3 C0', FFFDx2), ('F3 FF', FFFDx2),
-            ('F3 80 00', FFFD+'\x00'), ('F3 80 7F', FFFD+'\x7f'),
-            ('F3 80 C0', FFFDx2), ('F3 80 FF', FFFDx2),
-            ('F3 BF 00', FFFD+'\x00'), ('F3 BF 7F', FFFD+'\x7f'),
-            ('F3 BF C0', FFFDx2), ('F3 BF FF', FFFDx2),
-            ('F3 80 80 00', FFFD+'\x00'), ('F3 80 80 7F', FFFD+'\x7f'),
-            ('F3 80 80 C0', FFFDx2), ('F3 80 80 FF', FFFDx2),
-            ('F3 80 BF 00', FFFD+'\x00'), ('F3 80 BF 7F', FFFD+'\x7f'),
-            ('F3 80 BF C0', FFFDx2), ('F3 80 BF FF', FFFDx2),
-            ('F3 BF 80 00', FFFD+'\x00'), ('F3 BF 80 7F', FFFD+'\x7f'),
-            ('F3 BF 80 C0', FFFDx2), ('F3 BF 80 FF', FFFDx2),
-            ('F3 BF BF 00', FFFD+'\x00'), ('F3 BF BF 7F', FFFD+'\x7f'),
-            ('F3 BF BF C0', FFFDx2), ('F3 BF BF FF', FFFDx2),
-            ('F4 00', FFFD+'\x00'), ('F4 7F', FFFD+'\x7f'), ('F4 90', FFFDx2),
-            ('F4 BF', FFFDx2), ('F4 C0', FFFDx2), ('F4 FF', FFFDx2),
-            ('F4 80 00', FFFD+'\x00'), ('F4 80 7F', FFFD+'\x7f'),
-            ('F4 80 C0', FFFDx2), ('F4 80 FF', FFFDx2),
-            ('F4 8F 00', FFFD+'\x00'), ('F4 8F 7F', FFFD+'\x7f'),
-            ('F4 8F C0', FFFDx2), ('F4 8F FF', FFFDx2),
-            ('F4 80 80 00', FFFD+'\x00'), ('F4 80 80 7F', FFFD+'\x7f'),
-            ('F4 80 80 C0', FFFDx2), ('F4 80 80 FF', FFFDx2),
-            ('F4 80 BF 00', FFFD+'\x00'), ('F4 80 BF 7F', FFFD+'\x7f'),
-            ('F4 80 BF C0', FFFDx2), ('F4 80 BF FF', FFFDx2),
-            ('F4 8F 80 00', FFFD+'\x00'), ('F4 8F 80 7F', FFFD+'\x7f'),
-            ('F4 8F 80 C0', FFFDx2), ('F4 8F 80 FF', FFFDx2),
-            ('F4 8F BF 00', FFFD+'\x00'), ('F4 8F BF 7F', FFFD+'\x7f'),
-            ('F4 8F BF C0', FFFDx2), ('F4 8F BF FF', FFFDx2)
-        ]
-        for seq, res in sequences:
-            self.assertCorrectUTF8Decoding(bytes.fromhex(seq), res,
-                                           'invalid continuation byte')
-
-    def test_codecs_idna(self):
-        # Test whether trailing dot is preserved
-        self.assertEqual("www.python.org.".encode("idna"), b"www.python.org.")
-
-    def test_codecs_errors(self):
-        # Error handling (encoding)
-        self.assertRaises(UnicodeError, 'Andr\202 x'.encode, 'ascii')
-        self.assertRaises(UnicodeError, 'Andr\202 x'.encode, 'ascii','strict')
-        self.assertEqual('Andr\202 x'.encode('ascii','ignore'), b"Andr x")
-        self.assertEqual('Andr\202 x'.encode('ascii','replace'), b"Andr? x")
-        self.assertEqual('Andr\202 x'.encode('ascii', 'replace'),
-                         'Andr\202 x'.encode('ascii', errors='replace'))
-        self.assertEqual('Andr\202 x'.encode('ascii', 'ignore'),
-                         'Andr\202 x'.encode(encoding='ascii', errors='ignore'))
-
-        # Error handling (decoding)
-        self.assertRaises(UnicodeError, str, b'Andr\202 x', 'ascii')
-        self.assertRaises(UnicodeError, str, b'Andr\202 x', 'ascii', 'strict')
-        self.assertEqual(str(b'Andr\202 x', 'ascii', 'ignore'), "Andr x")
-        self.assertEqual(str(b'Andr\202 x', 'ascii', 'replace'), 'Andr\uFFFD x')
-        self.assertEqual(str(b'\202 x', 'ascii', 'replace'), '\uFFFD x')
-
-        # Error handling (unknown character names)
-        self.assertEqual(b"\\N{foo}xx".decode("unicode-escape", "ignore"), "xx")
-
-        # Error handling (truncated escape sequence)
-        self.assertRaises(UnicodeError, b"\\".decode, "unicode-escape")
-
-        self.assertRaises(TypeError, b"hello".decode, "test.unicode1")
-        self.assertRaises(TypeError, str, b"hello", "test.unicode2")
-        self.assertRaises(TypeError, "hello".encode, "test.unicode1")
-        self.assertRaises(TypeError, "hello".encode, "test.unicode2")
-
-        # Error handling (wrong arguments)
-        self.assertRaises(TypeError, "hello".encode, 42, 42, 42)
-
-        # Error handling (lone surrogate in
-        # _PyUnicode_TransformDecimalAndSpaceToASCII())
-        self.assertRaises(ValueError, int, "\ud800")
-        self.assertRaises(ValueError, int, "\udf00")
-        self.assertRaises(ValueError, float, "\ud800")
-        self.assertRaises(ValueError, float, "\udf00")
-        self.assertRaises(ValueError, complex, "\ud800")
-        self.assertRaises(ValueError, complex, "\udf00")
-
-    def test_codecs(self):
-        # Encoding
-        self.assertEqual('hello'.encode('ascii'), b'hello')
-        self.assertEqual('hello'.encode('utf-7'), b'hello')
-        self.assertEqual('hello'.encode('utf-8'), b'hello')
-        self.assertEqual('hello'.encode('utf-8'), b'hello')
-        self.assertEqual('hello'.encode('utf-16-le'), b'h\000e\000l\000l\000o\000')
-        self.assertEqual('hello'.encode('utf-16-be'), b'\000h\000e\000l\000l\000o')
-        self.assertEqual('hello'.encode('latin-1'), b'hello')
-
-        # Default encoding is utf-8
-        self.assertEqual('\u2603'.encode(), b'\xe2\x98\x83')
-
-        # Roundtrip safety for BMP (just the first 1024 chars)
-        for c in range(1024):
-            u = chr(c)
-            for encoding in ('utf-7', 'utf-8', 'utf-16', 'utf-16-le',
-                             'utf-16-be', 'raw_unicode_escape',
-                             'unicode_escape'):
-                self.assertEqual(str(u.encode(encoding),encoding), u)
-
-        # Roundtrip safety for BMP (just the first 256 chars)
-        for c in range(256):
-            u = chr(c)
-            for encoding in ('latin-1',):
-                self.assertEqual(str(u.encode(encoding),encoding), u)
-
-        # Roundtrip safety for BMP (just the first 128 chars)
-        for c in range(128):
-            u = chr(c)
-            for encoding in ('ascii',):
-                self.assertEqual(str(u.encode(encoding),encoding), u)
-
-        # Roundtrip safety for non-BMP (just a few chars)
-        with warnings.catch_warnings():
-            u = '\U00010001\U00020002\U00030003\U00040004\U00050005'
-            for encoding in ('utf-8', 'utf-16', 'utf-16-le', 'utf-16-be',
-                             'raw_unicode_escape', 'unicode_escape'):
-                self.assertEqual(str(u.encode(encoding),encoding), u)
-
-        # UTF-8 must be roundtrip safe for all code points
-        # (except surrogates, which are forbidden).
-        u = ''.join(map(chr, list(range(0, 0xd800)) +
-                             list(range(0xe000, 0x110000))))
-        for encoding in ('utf-8',):
-            self.assertEqual(str(u.encode(encoding),encoding), u)
-
-    def test_codecs_charmap(self):
-        # 0-127
-        s = bytes(range(128))
-        for encoding in (
-            'cp037', 'cp1026', 'cp273',
-            'cp437', 'cp500', 'cp720', 'cp737', 'cp775', 'cp850',
-            'cp852', 'cp855', 'cp858', 'cp860', 'cp861', 'cp862',
-            'cp863', 'cp865', 'cp866', 'cp1125',
-            'iso8859_10', 'iso8859_13', 'iso8859_14', 'iso8859_15',
-            'iso8859_2', 'iso8859_3', 'iso8859_4', 'iso8859_5', 'iso8859_6',
-            'iso8859_7', 'iso8859_9',
-            'koi8_r', 'koi8_t', 'koi8_u', 'kz1048', 'latin_1',
-            'mac_cyrillic', 'mac_latin2',
-
-            'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255',
-            'cp1256', 'cp1257', 'cp1258',
-            'cp856', 'cp857', 'cp864', 'cp869', 'cp874',
-
-            'mac_greek', 'mac_iceland','mac_roman', 'mac_turkish',
-            'cp1006', 'iso8859_8',
-
-            ### These have undefined mappings:
-            #'cp424',
-
-            ### These fail the round-trip:
-            #'cp875'
-
-            ):
-            self.assertEqual(str(s, encoding).encode(encoding), s)
-
-        # 128-255
-        s = bytes(range(128, 256))
-        for encoding in (
-            'cp037', 'cp1026', 'cp273',
-            'cp437', 'cp500', 'cp720', 'cp737', 'cp775', 'cp850',
-            'cp852', 'cp855', 'cp858', 'cp860', 'cp861', 'cp862',
-            'cp863', 'cp865', 'cp866', 'cp1125',
-            'iso8859_10', 'iso8859_13', 'iso8859_14', 'iso8859_15',
-            'iso8859_2', 'iso8859_4', 'iso8859_5',
-            'iso8859_9', 'koi8_r', 'koi8_u', 'latin_1',
-            'mac_cyrillic', 'mac_latin2',
-
-            ### These have undefined mappings:
-            #'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255',
-            #'cp1256', 'cp1257', 'cp1258',
-            #'cp424', 'cp856', 'cp857', 'cp864', 'cp869', 'cp874',
-            #'iso8859_3', 'iso8859_6', 'iso8859_7', 'koi8_t', 'kz1048',
-            #'mac_greek', 'mac_iceland','mac_roman', 'mac_turkish',
-
-            ### These fail the round-trip:
-            #'cp1006', 'cp875', 'iso8859_8',
-
-            ):
-            self.assertEqual(str(s, encoding).encode(encoding), s)
-
-    def test_concatenation(self):
-        self.assertEqual(("abc" "def"), "abcdef")
-        self.assertEqual(("abc" "def"), "abcdef")
-        self.assertEqual(("abc" "def"), "abcdef")
-        self.assertEqual(("abc" "def" "ghi"), "abcdefghi")
-        self.assertEqual(("abc" "def" "ghi"), "abcdefghi")
-
-    def test_ucs4(self):
-        x = '\U00100000'
-        y = x.encode("raw-unicode-escape").decode("raw-unicode-escape")
-        self.assertEqual(x, y)
-
-        y = br'\U00100000'
-        x = y.decode("raw-unicode-escape").encode("raw-unicode-escape")
-        self.assertEqual(x, y)
-        y = br'\U00010000'
-        x = y.decode("raw-unicode-escape").encode("raw-unicode-escape")
-        self.assertEqual(x, y)
-
-        try:
-            br'\U11111111'.decode("raw-unicode-escape")
-        except UnicodeDecodeError as e:
-            self.assertEqual(e.start, 0)
-            self.assertEqual(e.end, 10)
-        else:
-            self.fail("Should have raised UnicodeDecodeError")
-
-    def test_conversion(self):
-        # Make sure __str__() works properly
-        class ObjectToStr:
-            def __str__(self):
-                return "foo"
-
-        class StrSubclassToStr(str):
-            def __str__(self):
-                return "foo"
-
-        class StrSubclassToStrSubclass(str):
-            def __new__(cls, content=""):
-                return str.__new__(cls, 2*content)
-            def __str__(self):
-                return self
-
-        self.assertEqual(str(ObjectToStr()), "foo")
-        self.assertEqual(str(StrSubclassToStr("bar")), "foo")
-        s = str(StrSubclassToStrSubclass("foo"))
-        self.assertEqual(s, "foofoo")
-        self.assertIs(type(s), StrSubclassToStrSubclass)
-        s = StrSubclass(StrSubclassToStrSubclass("foo"))
-        self.assertEqual(s, "foofoo")
-        self.assertIs(type(s), StrSubclass)
-
-    def test_unicode_repr(self):
-        class s1:
-            def __repr__(self):
-                return '\\n'
-
-        self.assertEqual(repr(s1()), '\\n')
-
-    def test_printable_repr(self):
-        self.assertEqual(repr('\U00010000'), "'%c'" % (0x10000,)) # printable
-        self.assertEqual(repr('\U00014000'), "'\\U00014000'")     # nonprintable
-
-    # This test only affects 32-bit platforms because expandtabs can only take
-    # an int as the max value, not a 64-bit C long.  If expandtabs is changed
-    # to take a 64-bit long, this test should apply to all platforms.
-    @unittest.skipIf(sys.maxsize > (1 << 32) or struct.calcsize('P') != 4,
-                     'only applies to 32-bit platforms')
-    def test_expandtabs_overflows_gracefully(self):
-        self.assertRaises(OverflowError, 't\tt\t'.expandtabs, sys.maxsize)
-
-    @support.cpython_only
-    def test_expandtabs_optimization(self):
-        s = 'abc'
-        self.assertIs(s.expandtabs(), s)
-
-    def test_raiseMemError(self):
-        asciifields = "nnb"
-        compactfields = asciifields + "nP"
-        ascii_struct_size = support.calcobjsize(asciifields)
-        compact_struct_size = support.calcobjsize(compactfields)
-
-        for char in ('a', '\xe9', '\u20ac', '\U0010ffff'):
-            code = ord(char)
-            if code < 0x80:
-                char_size = 1  # sizeof(Py_UCS1)
-                struct_size = ascii_struct_size
-            elif code < 0x100:
-                char_size = 1  # sizeof(Py_UCS1)
-                struct_size = compact_struct_size
-            elif code < 0x10000:
-                char_size = 2  # sizeof(Py_UCS2)
-                struct_size = compact_struct_size
-            else:
-                char_size = 4  # sizeof(Py_UCS4)
-                struct_size = compact_struct_size
-            # Note: sys.maxsize is half of the actual max allocation because of
-            # the signedness of Py_ssize_t. Strings of maxlen-1 should in principle
-            # be allocatable, given enough memory.
-            maxlen = ((sys.maxsize - struct_size) // char_size)
-            alloc = lambda: char * maxlen
-            with self.subTest(
-                char=char,
-                struct_size=struct_size,
-                char_size=char_size
-            ):
-                # self-check
-                self.assertEqual(
-                    sys.getsizeof(char * 42),
-                    struct_size + (char_size * (42 + 1))
-                )
-                self.assertRaises(MemoryError, alloc)
-                self.assertRaises(MemoryError, alloc)
-
-    def test_format_subclass(self):
-        class S(str):
-            def __str__(self):
-                return '__str__ overridden'
-        s = S('xxx')
-        self.assertEqual("%s" % s, '__str__ overridden')
-        self.assertEqual("{}".format(s), '__str__ overridden')
-
-    def test_subclass_add(self):
-        class S(str):
-            def __add__(self, o):
-                return "3"
-        self.assertEqual(S("4") + S("5"), "3")
-        class S(str):
-            def __iadd__(self, o):
-                return "3"
-        s = S("1")
-        s += "4"
-        self.assertEqual(s, "3")
-
-    def test_getnewargs(self):
-        text = 'abc'
-        args = text.__getnewargs__()
-        self.assertIsNot(args[0], text)
-        self.assertEqual(args[0], text)
-        self.assertEqual(len(args), 1)
-
-    @support.cpython_only
-    @support.requires_legacy_unicode_capi
-    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
-    def test_resize(self):
-        for length in range(1, 100, 7):
-            # generate a fresh string (refcount=1)
-            text = 'a' * length + 'b'
-
-            # fill wstr internal field
-            with self.assertWarns(DeprecationWarning):
-                abc = _testcapi.getargs_u(text)
-            self.assertEqual(abc, text)
-
-            # resize text: wstr field must be cleared and then recomputed
-            text += 'c'
-            with self.assertWarns(DeprecationWarning):
-                abcdef = _testcapi.getargs_u(text)
-            self.assertNotEqual(abc, abcdef)
-            self.assertEqual(abcdef, text)
-
-    def test_compare(self):
-        # Issue #17615
-        N = 10
-        ascii = 'a' * N
-        ascii2 = 'z' * N
-        latin = '\x80' * N
-        latin2 = '\xff' * N
-        bmp = '\u0100' * N
-        bmp2 = '\uffff' * N
-        astral = '\U00100000' * N
-        astral2 = '\U0010ffff' * N
-        strings = (
-            ascii, ascii2,
-            latin, latin2,
-            bmp, bmp2,
-            astral, astral2)
-        for text1, text2 in itertools.combinations(strings, 2):
-            equal = (text1 is text2)
-            self.assertEqual(text1 == text2, equal)
-            self.assertEqual(text1 != text2, not equal)
-
-            if equal:
-                self.assertTrue(text1 <= text2)
-                self.assertTrue(text1 >= text2)
-
-                # text1 is text2: duplicate strings to skip the "str1 == str2"
-                # optimization in unicode_compare_eq() and really compare
-                # character per character
-                copy1 = duplicate_string(text1)
-                copy2 = duplicate_string(text2)
-                self.assertIsNot(copy1, copy2)
-
-                self.assertTrue(copy1 == copy2)
-                self.assertFalse(copy1 != copy2)
-
-                self.assertTrue(copy1 <= copy2)
-                self.assertTrue(copy2 >= copy2)
-
-        self.assertTrue(ascii < ascii2)
-        self.assertTrue(ascii < latin)
-        self.assertTrue(ascii < bmp)
-        self.assertTrue(ascii < astral)
-        self.assertFalse(ascii >= ascii2)
-        self.assertFalse(ascii >= latin)
-        self.assertFalse(ascii >= bmp)
-        self.assertFalse(ascii >= astral)
-
-        self.assertFalse(latin < ascii)
-        self.assertTrue(latin < latin2)
-        self.assertTrue(latin < bmp)
-        self.assertTrue(latin < astral)
-        self.assertTrue(latin >= ascii)
-        self.assertFalse(latin >= latin2)
-        self.assertFalse(latin >= bmp)
-        self.assertFalse(latin >= astral)
-
-        self.assertFalse(bmp < ascii)
-        self.assertFalse(bmp < latin)
-        self.assertTrue(bmp < bmp2)
-        self.assertTrue(bmp < astral)
-        self.assertTrue(bmp >= ascii)
-        self.assertTrue(bmp >= latin)
-        self.assertFalse(bmp >= bmp2)
-        self.assertFalse(bmp >= astral)
-
-        self.assertFalse(astral < ascii)
-        self.assertFalse(astral < latin)
-        self.assertFalse(astral < bmp2)
-        self.assertTrue(astral < astral2)
-        self.assertTrue(astral >= ascii)
-        self.assertTrue(astral >= latin)
-        self.assertTrue(astral >= bmp2)
-        self.assertFalse(astral >= astral2)
-
-    def test_free_after_iterating(self):
-        support.check_free_after_iterating(self, iter, str)
-        support.check_free_after_iterating(self, reversed, str)
-
-    def test_check_encoding_errors(self):
-        # bpo-37388: str(bytes) and str.decode() must check encoding and errors
-        # arguments in dev mode
-        encodings = ('ascii', 'utf8', 'latin1')
-        invalid = 'Boom, Shaka Laka, Boom!'
-        code = textwrap.dedent(f'''
-            import sys
-            encodings = {encodings!r}
-
-            for data in (b'', b'short string'):
-                try:
-                    str(data, encoding={invalid!r})
-                except LookupError:
-                    pass
-                else:
-                    sys.exit(21)
-
-                try:
-                    str(data, errors={invalid!r})
-                except LookupError:
-                    pass
-                else:
-                    sys.exit(22)
-
-                for encoding in encodings:
-                    try:
-                        str(data, encoding, errors={invalid!r})
-                    except LookupError:
-                        pass
-                    else:
-                        sys.exit(22)
-
-            for data in ('', 'short string'):
-                try:
-                    data.encode(encoding={invalid!r})
-                except LookupError:
-                    pass
-                else:
-                    sys.exit(23)
-
-                try:
-                    data.encode(errors={invalid!r})
-                except LookupError:
-                    pass
-                else:
-                    sys.exit(24)
-
-                for encoding in encodings:
-                    try:
-                        data.encode(encoding, errors={invalid!r})
-                    except LookupError:
-                        pass
-                    else:
-                        sys.exit(24)
-
-            sys.exit(10)
-        ''')
-        proc = assert_python_failure('-X', 'dev', '-c', code)
-        self.assertEqual(proc.rc, 10, proc)
-
-
-class StringModuleTest(unittest.TestCase):
-    def test_formatter_parser(self):
-        def parse(format):
-            return list(_string.formatter_parser(format))
-
-        formatter = parse("prefix {2!s}xxx{0:^+10.3f}{obj.attr!s} {z[0]!s:10}")
-        self.assertEqual(formatter, [
-            ('prefix ', '2', '', 's'),
-            ('xxx', '0', '^+10.3f', None),
-            ('', 'obj.attr', '', 's'),
-            (' ', 'z[0]', '10', 's'),
-        ])
-
-        formatter = parse("prefix {} suffix")
-        self.assertEqual(formatter, [
-            ('prefix ', '', '', None),
-            (' suffix', None, None, None),
-        ])
-
-        formatter = parse("str")
-        self.assertEqual(formatter, [
-            ('str', None, None, None),
-        ])
-
-        formatter = parse("")
-        self.assertEqual(formatter, [])
-
-        formatter = parse("{0}")
-        self.assertEqual(formatter, [
-            ('', '0', '', None),
-        ])
-
-        self.assertRaises(TypeError, _string.formatter_parser, 1)
-
-    def test_formatter_field_name_split(self):
-        def split(name):
-            items = list(_string.formatter_field_name_split(name))
-            items[1] = list(items[1])
-            return items
-        self.assertEqual(split("obj"), ["obj", []])
-        self.assertEqual(split("obj.arg"), ["obj", [(True, 'arg')]])
-        self.assertEqual(split("obj[key]"), ["obj", [(False, 'key')]])
-        self.assertEqual(split("obj.arg[key1][key2]"), [
-            "obj",
-            [(True, 'arg'),
-             (False, 'key1'),
-             (False, 'key2'),
-            ]])
-        self.assertRaises(TypeError, _string.formatter_field_name_split, 1)
-
-    def test_str_subclass_attr(self):
-
-        name = StrSubclass("name")
-        name2 = StrSubclass("name2")
-        class Bag:
-            pass
-
-        o = Bag()
-        with self.assertRaises(AttributeError):
-            delattr(o, name)
-        setattr(o, name, 1)
-        self.assertEqual(o.name, 1)
-        o.name = 2
-        self.assertEqual(list(o.__dict__), [name])
-
-        with self.assertRaises(AttributeError):
-            delattr(o, name2)
-        with self.assertRaises(AttributeError):
-            del o.name2
-        setattr(o, name2, 3)
-        self.assertEqual(o.name2, 3)
-        o.name2 = 4
-        self.assertEqual(list(o.__dict__), [name, name2])
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_unicode_identifiers.py b/Lib/test/test_unicode_identifiers.py
index 5b9ced5d1cb837..63c6c055824b20 100644
--- a/Lib/test/test_unicode_identifiers.py
+++ b/Lib/test/test_unicode_identifiers.py
@@ -19,7 +19,7 @@ def test_non_bmp_normalized(self):
 
     def test_invalid(self):
         try:
-            from test import badsyntax_3131
+            from test.tokenizedata import badsyntax_3131
         except SyntaxError as err:
             self.assertEqual(str(err),
               "invalid character '€' (U+20AC) (badsyntax_3131.py, line 2)")
diff --git a/Lib/test/test_unicodedata.py b/Lib/test/test_unicodedata.py
index 3dc0790ca15b41..d3bf4ea7c7d437 100644
--- a/Lib/test/test_unicodedata.py
+++ b/Lib/test/test_unicodedata.py
@@ -18,7 +18,7 @@
 class UnicodeMethodsTest(unittest.TestCase):
 
     # update this, if the database changes
-    expectedchecksum = 'e708c31c0d51f758adf475cb7201cf80917362be'
+    expectedchecksum = '63aa77dcb36b0e1df082ee2a6071caeda7f0955e'
 
     @requires_resource('cpu')
     def test_method_checksum(self):
@@ -71,7 +71,7 @@ class UnicodeFunctionsTest(UnicodeDatabaseTest):
 
     # Update this if the database changes. Make sure to do a full rebuild
     # (e.g. 'make distclean && make') to get the correct checksum.
-    expectedchecksum = '26ff0d31c14194b4606a5b3a81ac36df3a14e331'
+    expectedchecksum = '232affd2a50ec4bd69d2482aa0291385cbdefaba'
 
     @requires_resource('cpu')
     def test_function_checksum(self):
@@ -104,6 +104,26 @@ def test_name_inverse_lookup(self):
             if looked_name := self.db.name(char, None):
                 self.assertEqual(self.db.lookup(looked_name), char)
 
+    def test_no_names_in_pua(self):
+        puas = [*range(0xe000, 0xf8ff),
+                *range(0xf0000, 0xfffff),
+                *range(0x100000, 0x10ffff)]
+        for i in puas:
+            char = chr(i)
+            self.assertRaises(ValueError, self.db.name, char)
+
+    def test_lookup_nonexistant(self):
+        # just make sure that lookup can fail
+        for nonexistant in [
+            "LATIN SMLL LETR A",
+            "OPEN HANDS SIGHS",
+            "DREGS",
+            "HANDBUG",
+            "MODIFIER LETTER CYRILLIC SMALL QUESTION MARK",
+            "???",
+        ]:
+            self.assertRaises(KeyError, self.db.lookup, nonexistant)
+
     def test_digit(self):
         self.assertEqual(self.db.digit('A', None), None)
         self.assertEqual(self.db.digit('9'), 9)
@@ -313,6 +333,7 @@ def test_ucd_510(self):
         self.assertTrue("\u1d79".upper()=='\ua77d')
         self.assertTrue(".".upper()=='.')
 
+    @requires_resource('cpu')
     def test_bug_5828(self):
         self.assertEqual("\u1d79".lower(), "\u1d79")
         # Only U+0000 should have U+0000 as its upper/lower/titlecase variant
@@ -353,6 +374,7 @@ def unistr(data):
         return "".join([chr(x) for x in data])
 
     @requires_resource('network')
+    @requires_resource('cpu')
     def test_normalization(self):
         TESTDATAFILE = "NormalizationTest.txt"
         TESTDATAURL = f"http://www.pythontest.net/unicode/{unicodedata.unidata_version}/{TESTDATAFILE}"
diff --git a/Lib/test/test_unittest/test_async_case.py b/Lib/test/test_unittest/test_async_case.py
index a465103b59b6ec..ba1ab838cd4a22 100644
--- a/Lib/test/test_unittest/test_async_case.py
+++ b/Lib/test/test_unittest/test_async_case.py
@@ -484,5 +484,19 @@ async def test_demo1(self):
         result = test.run()
         self.assertTrue(result.wasSuccessful())
 
+    def test_loop_factory(self):
+        asyncio.set_event_loop_policy(None)
+
+        class TestCase1(unittest.IsolatedAsyncioTestCase):
+            loop_factory = asyncio.EventLoop
+
+            async def test_demo1(self):
+                pass
+
+        test = TestCase1('test_demo1')
+        result = test.run()
+        self.assertTrue(result.wasSuccessful())
+        self.assertIsNone(support.maybe_get_event_loop_policy())
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_unittest/test_discovery.py b/Lib/test/test_unittest/test_discovery.py
index 946fa1258ea25e..dcb72d73efceab 100644
--- a/Lib/test/test_unittest/test_discovery.py
+++ b/Lib/test/test_unittest/test_discovery.py
@@ -6,7 +6,6 @@
 import pickle
 from test import support
 from test.support import import_helper
-import test.test_importlib.util
 
 import unittest
 import unittest.mock
@@ -572,7 +571,7 @@ def _get_module_from_name(name):
         result = unittest.TestResult()
         suite.run(result)
         self.assertEqual(len(result.skipped), 1)
-        self.assertEqual(result.testsRun, 1)
+        self.assertEqual(result.testsRun, 0)
         self.assertEqual(import_calls, ['my_package'])
 
         # Check picklability
@@ -826,6 +825,8 @@ def restore():
                          'as dotted module names')
 
     def test_discovery_failed_discovery(self):
+        from test.test_importlib import util
+
         loader = unittest.TestLoader()
         package = types.ModuleType('package')
 
@@ -837,7 +838,7 @@ def _import(packagename, *args, **kwargs):
             # Since loader.discover() can modify sys.path, restore it when done.
             with import_helper.DirsOnSysPath():
                 # Make sure to remove 'package' from sys.modules when done.
-                with test.test_importlib.util.uncache('package'):
+                with util.uncache('package'):
                     with self.assertRaises(TypeError) as cm:
                         loader.discover('package')
                     self.assertEqual(str(cm.exception),
diff --git a/Lib/test/test_unittest/test_loader.py b/Lib/test/test_unittest/test_loader.py
index a203145a791b1a..83dd25ca54623f 100644
--- a/Lib/test/test_unittest/test_loader.py
+++ b/Lib/test/test_unittest/test_loader.py
@@ -82,6 +82,22 @@ def runTest(self):
         self.assertIsInstance(suite, loader.suiteClass)
         self.assertEqual(list(suite), [Foo('runTest')])
 
+    # "Do not load any tests from `TestCase` class itself."
+    def test_loadTestsFromTestCase__from_TestCase(self):
+        loader = unittest.TestLoader()
+
+        suite = loader.loadTestsFromTestCase(unittest.TestCase)
+        self.assertIsInstance(suite, loader.suiteClass)
+        self.assertEqual(list(suite), [])
+
+    # "Do not load any tests from `FunctionTestCase` class."
+    def test_loadTestsFromTestCase__from_FunctionTestCase(self):
+        loader = unittest.TestLoader()
+
+        suite = loader.loadTestsFromTestCase(unittest.FunctionTestCase)
+        self.assertIsInstance(suite, loader.suiteClass)
+        self.assertEqual(list(suite), [])
+
     ################################################################
     ### /Tests for TestLoader.loadTestsFromTestCase
 
@@ -103,6 +119,19 @@ def test(self):
         expected = [loader.suiteClass([MyTestCase('test')])]
         self.assertEqual(list(suite), expected)
 
+    # "This test ensures that internal `TestCase` subclasses are not loaded"
+    def test_loadTestsFromModule__TestCase_subclass_internals(self):
+        # See https://github.com/python/cpython/issues/84867
+        m = types.ModuleType('m')
+        # Simulate imported names:
+        m.TestCase = unittest.TestCase
+        m.FunctionTestCase = unittest.FunctionTestCase
+
+        loader = unittest.TestLoader()
+        suite = loader.loadTestsFromModule(m)
+        self.assertIsInstance(suite, loader.suiteClass)
+        self.assertEqual(list(suite), [])
+
     # "This method searches `module` for classes derived from TestCase"
     #
     # What happens if no tests are found (no TestCase instances)?
@@ -1470,39 +1499,6 @@ def test(self): pass
     def reverse_three_way_cmp(a, b):
         return unittest.util.three_way_cmp(b, a)
 
-    def test_getTestCaseNames(self):
-        with self.assertWarns(DeprecationWarning) as w:
-            tests = unittest.getTestCaseNames(self.MyTestCase,
-                prefix='check', sortUsing=self.reverse_three_way_cmp,
-                testNamePatterns=None)
-        self.assertEqual(w.filename, __file__)
-        self.assertEqual(tests, ['check_2', 'check_1'])
-
-    def test_makeSuite(self):
-        with self.assertWarns(DeprecationWarning) as w:
-            suite = unittest.makeSuite(self.MyTestCase,
-                    prefix='check', sortUsing=self.reverse_three_way_cmp,
-                    suiteClass=self.MyTestSuite)
-        self.assertEqual(w.filename, __file__)
-        self.assertIsInstance(suite, self.MyTestSuite)
-        expected = self.MyTestSuite([self.MyTestCase('check_2'),
-                                     self.MyTestCase('check_1')])
-        self.assertEqual(suite, expected)
-
-    def test_findTestCases(self):
-        m = types.ModuleType('m')
-        m.testcase_1 = self.MyTestCase
-
-        with self.assertWarns(DeprecationWarning) as w:
-            suite = unittest.findTestCases(m,
-                prefix='check', sortUsing=self.reverse_three_way_cmp,
-                suiteClass=self.MyTestSuite)
-        self.assertEqual(w.filename, __file__)
-        self.assertIsInstance(suite, self.MyTestSuite)
-        expected = [self.MyTestSuite([self.MyTestCase('check_2'),
-                                      self.MyTestCase('check_1')])]
-        self.assertEqual(list(suite), expected)
-
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_unittest/test_result.py b/Lib/test/test_unittest/test_result.py
index db551b7890ca3e..15e3f62ef66a4b 100644
--- a/Lib/test/test_unittest/test_result.py
+++ b/Lib/test/test_unittest/test_result.py
@@ -6,7 +6,6 @@
 
 import traceback
 import unittest
-from unittest import mock
 from unittest.util import strclass
 from test.test_unittest.support import BufferedWriter
 
diff --git a/Lib/test/test_unittest/test_runner.py b/Lib/test/test_unittest/test_runner.py
index f3b2c0cffd4513..1b9cef43e3f9c5 100644
--- a/Lib/test/test_unittest/test_runner.py
+++ b/Lib/test/test_unittest/test_runner.py
@@ -24,6 +24,13 @@ def getRunner():
                                    stream=io.StringIO())
 
 
+class CustomError(Exception):
+    pass
+
+# For test output compat:
+CustomErrorRepr = f"{__name__ + '.' if __name__ != '__main__' else ''}CustomError"
+
+
 def runTests(*cases):
     suite = unittest.TestSuite()
     for case in cases:
@@ -46,7 +53,7 @@ def cleanup(ordering, blowUp=False):
         ordering.append('cleanup_good')
     else:
         ordering.append('cleanup_exc')
-        raise Exception('CleanUpExc')
+        raise CustomError('CleanUpExc')
 
 
 class TestCM:
@@ -108,8 +115,8 @@ def testNothing(self):
         result = unittest.TestResult()
         outcome = test._outcome = _Outcome(result=result)
 
-        CleanUpExc = Exception('foo')
-        exc2 = Exception('bar')
+        CleanUpExc = CustomError('foo')
+        exc2 = CustomError('bar')
         def cleanup1():
             raise CleanUpExc
 
@@ -125,10 +132,10 @@ def cleanup2():
         (_, msg2), (_, msg1) = result.errors
         self.assertIn('in cleanup1', msg1)
         self.assertIn('raise CleanUpExc', msg1)
-        self.assertIn('Exception: foo', msg1)
+        self.assertIn(f'{CustomErrorRepr}: foo', msg1)
         self.assertIn('in cleanup2', msg2)
         self.assertIn('raise exc2', msg2)
-        self.assertIn('Exception: bar', msg2)
+        self.assertIn(f'{CustomErrorRepr}: bar', msg2)
 
     def testCleanupInRun(self):
         blowUp = False
@@ -139,7 +146,7 @@ def setUp(self):
                 ordering.append('setUp')
                 test.addCleanup(cleanup2)
                 if blowUp:
-                    raise Exception('foo')
+                    raise CustomError('foo')
 
             def testNothing(self):
                 ordering.append('test')
@@ -280,7 +287,7 @@ def setUpClass(cls):
                 ordering.append('setUpClass')
                 cls.addClassCleanup(cleanup, ordering)
                 if blowUp:
-                    raise Exception()
+                    raise CustomError()
             def testNothing(self):
                 ordering.append('test')
             @classmethod
@@ -306,7 +313,7 @@ def setUpClass(cls):
                 ordering.append('setUpClass')
                 cls.addClassCleanup(cleanup, ordering)
                 if blowUp:
-                    raise Exception()
+                    raise CustomError()
             def testNothing(self):
                 ordering.append('test')
             @classmethod
@@ -346,7 +353,7 @@ def tearDownClass(cls):
         ordering = []
         blowUp = True
         suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestableTest)
-        with self.assertRaises(Exception) as cm:
+        with self.assertRaises(CustomError) as cm:
             suite.debug()
         self.assertEqual(str(cm.exception), 'CleanUpExc')
         self.assertEqual(ordering,
@@ -366,10 +373,10 @@ def testNothing(self):
             @classmethod
             def tearDownClass(cls):
                 ordering.append('tearDownClass')
-                raise Exception('TearDownClassExc')
+                raise CustomError('TearDownClassExc')
 
         suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestableTest)
-        with self.assertRaises(Exception) as cm:
+        with self.assertRaises(CustomError) as cm:
             suite.debug()
         self.assertEqual(str(cm.exception), 'TearDownClassExc')
         self.assertEqual(ordering, ['setUpClass', 'test', 'tearDownClass'])
@@ -379,7 +386,7 @@ def tearDownClass(cls):
         ordering = []
         blowUp = True
         suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestableTest)
-        with self.assertRaises(Exception) as cm:
+        with self.assertRaises(CustomError) as cm:
             suite.debug()
         self.assertEqual(str(cm.exception), 'TearDownClassExc')
         self.assertEqual(ordering, ['setUpClass', 'test', 'tearDownClass'])
@@ -392,16 +399,22 @@ def testNothing(self):
                 pass
 
         def cleanup1():
-            raise Exception('cleanup1')
+            raise CustomError('cleanup1')
 
         def cleanup2():
-            raise Exception('cleanup2')
+            raise CustomError('cleanup2')
 
         TestableTest.addClassCleanup(cleanup1)
         TestableTest.addClassCleanup(cleanup2)
-        with self.assertRaises(Exception) as e:
-            TestableTest.doClassCleanups()
-            self.assertEqual(e, 'cleanup1')
+        TestableTest.doClassCleanups()
+
+        self.assertEqual(len(TestableTest.tearDown_exceptions), 2)
+
+        e1, e2 = TestableTest.tearDown_exceptions
+        self.assertIsInstance(e1[1], CustomError)
+        self.assertEqual(str(e1[1]), 'cleanup2')
+        self.assertIsInstance(e2[1], CustomError)
+        self.assertEqual(str(e2[1]), 'cleanup1')
 
     def test_with_errors_addCleanUp(self):
         ordering = []
@@ -421,7 +434,7 @@ def tearDownClass(cls):
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpClass', 'setUp', 'cleanup_exc',
                           'tearDownClass', 'cleanup_good'])
@@ -444,7 +457,7 @@ def tearDownClass(cls):
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpClass', 'setUp', 'test', 'cleanup_good',
                           'tearDownClass', 'cleanup_exc'])
@@ -460,11 +473,11 @@ def setUpClass(cls):
                 ordering.append('setUpClass')
                 cls.addClassCleanup(cleanup, ordering, blowUp=True)
                 if class_blow_up:
-                    raise Exception('ClassExc')
+                    raise CustomError('ClassExc')
             def setUp(self):
                 ordering.append('setUp')
                 if method_blow_up:
-                    raise Exception('MethodExc')
+                    raise CustomError('MethodExc')
             def testNothing(self):
                 ordering.append('test')
             @classmethod
@@ -473,7 +486,7 @@ def tearDownClass(cls):
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpClass', 'setUp', 'test',
                           'tearDownClass', 'cleanup_exc'])
@@ -483,9 +496,9 @@ def tearDownClass(cls):
         method_blow_up = False
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: ClassExc')
+                         f'{CustomErrorRepr}: ClassExc')
         self.assertEqual(result.errors[1][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpClass', 'cleanup_exc'])
 
@@ -494,9 +507,9 @@ def tearDownClass(cls):
         method_blow_up = True
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: MethodExc')
+                         f'{CustomErrorRepr}: MethodExc')
         self.assertEqual(result.errors[1][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpClass', 'setUp', 'tearDownClass',
                           'cleanup_exc'])
@@ -513,11 +526,11 @@ def testNothing(self):
             @classmethod
             def tearDownClass(cls):
                 ordering.append('tearDownClass')
-                raise Exception('TearDownExc')
+                raise CustomError('TearDownExc')
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: TearDownExc')
+                         f'{CustomErrorRepr}: TearDownExc')
         self.assertEqual(ordering,
                          ['setUpClass', 'test', 'tearDownClass', 'cleanup_good'])
 
@@ -620,7 +633,7 @@ def module_cleanup_good(*args, **kwargs):
             module_cleanups.append((3, args, kwargs))
 
         def module_cleanup_bad(*args, **kwargs):
-            raise Exception('CleanUpExc')
+            raise CustomError('CleanUpExc')
 
         class Module(object):
             unittest.addModuleCleanup(module_cleanup_good, 1, 2, 3,
@@ -630,7 +643,7 @@ class Module(object):
                          [(module_cleanup_good, (1, 2, 3),
                            dict(four='hello', five='goodbye')),
                           (module_cleanup_bad, (), {})])
-        with self.assertRaises(Exception) as e:
+        with self.assertRaises(CustomError) as e:
             unittest.case.doModuleCleanups()
         self.assertEqual(str(e.exception), 'CleanUpExc')
         self.assertEqual(unittest.case._module_cleanups, [])
@@ -659,7 +672,7 @@ def setUpModule():
                 ordering.append('setUpModule')
                 unittest.addModuleCleanup(cleanup, ordering)
                 if blowUp:
-                    raise Exception('setUpModule Exc')
+                    raise CustomError('setUpModule Exc')
             @staticmethod
             def tearDownModule():
                 ordering.append('tearDownModule')
@@ -679,7 +692,7 @@ def tearDownClass(cls):
         result = runTests(TestableTest)
         self.assertEqual(ordering, ['setUpModule', 'cleanup_good'])
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: setUpModule Exc')
+                         f'{CustomErrorRepr}: setUpModule Exc')
 
         ordering = []
         blowUp = False
@@ -699,7 +712,7 @@ def setUpModule():
                 ordering.append('setUpModule')
                 unittest.addModuleCleanup(cleanup, ordering)
                 if blowUp:
-                    raise Exception()
+                    raise CustomError()
             @staticmethod
             def tearDownModule():
                 ordering.append('tearDownModule')
@@ -710,7 +723,7 @@ def setUpModule():
                 ordering.append('setUpModule2')
                 unittest.addModuleCleanup(cleanup, ordering)
                 if blowUp2:
-                    raise Exception()
+                    raise CustomError()
             @staticmethod
             def tearDownModule():
                 ordering.append('tearDownModule2')
@@ -799,7 +812,7 @@ def setUpModule():
             @staticmethod
             def tearDownModule():
                 ordering.append('tearDownModule')
-                raise Exception('CleanUpExc')
+                raise CustomError('CleanUpExc')
 
         class TestableTest(unittest.TestCase):
             @classmethod
@@ -815,7 +828,7 @@ def tearDownClass(cls):
         sys.modules['Module'] = Module
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering, ['setUpModule', 'setUpClass', 'test',
                                     'tearDownClass', 'tearDownModule',
                                     'cleanup_good'])
@@ -855,7 +868,7 @@ def tearDownClass(cls):
         ordering = []
         blowUp = True
         suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestableTest)
-        with self.assertRaises(Exception) as cm:
+        with self.assertRaises(CustomError) as cm:
             suite.debug()
         self.assertEqual(str(cm.exception), 'CleanUpExc')
         self.assertEqual(ordering, ['setUpModule', 'setUpClass', 'test',
@@ -873,7 +886,7 @@ def setUpModule():
             @staticmethod
             def tearDownModule():
                 ordering.append('tearDownModule')
-                raise Exception('TearDownModuleExc')
+                raise CustomError('TearDownModuleExc')
 
         class TestableTest(unittest.TestCase):
             @classmethod
@@ -888,7 +901,7 @@ def tearDownClass(cls):
         TestableTest.__module__ = 'Module'
         sys.modules['Module'] = Module
         suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestableTest)
-        with self.assertRaises(Exception) as cm:
+        with self.assertRaises(CustomError) as cm:
             suite.debug()
         self.assertEqual(str(cm.exception), 'TearDownModuleExc')
         self.assertEqual(ordering, ['setUpModule', 'setUpClass', 'test',
@@ -899,7 +912,7 @@ def tearDownClass(cls):
         ordering = []
         blowUp = True
         suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestableTest)
-        with self.assertRaises(Exception) as cm:
+        with self.assertRaises(CustomError) as cm:
             suite.debug()
         self.assertEqual(str(cm.exception), 'TearDownModuleExc')
         self.assertEqual(ordering, ['setUpModule', 'setUpClass', 'test',
@@ -978,7 +991,7 @@ def tearDownClass(cls):
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpModule', 'setUpClass', 'test', 'tearDownClass',
                           'cleanup_exc', 'tearDownModule', 'cleanup_good'])
@@ -1008,7 +1021,7 @@ def tearDown(self):
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpModule', 'setUp', 'test', 'tearDown',
                           'cleanup_exc', 'tearDownModule', 'cleanup_good'])
@@ -1024,7 +1037,7 @@ def setUpModule():
                 ordering.append('setUpModule')
                 unittest.addModuleCleanup(cleanup, ordering, blowUp=True)
                 if module_blow_up:
-                    raise Exception('ModuleExc')
+                    raise CustomError('ModuleExc')
             @staticmethod
             def tearDownModule():
                 ordering.append('tearDownModule')
@@ -1034,11 +1047,11 @@ class TestableTest(unittest.TestCase):
             def setUpClass(cls):
                 ordering.append('setUpClass')
                 if class_blow_up:
-                    raise Exception('ClassExc')
+                    raise CustomError('ClassExc')
             def setUp(self):
                 ordering.append('setUp')
                 if method_blow_up:
-                    raise Exception('MethodExc')
+                    raise CustomError('MethodExc')
             def testNothing(self):
                 ordering.append('test')
             @classmethod
@@ -1050,7 +1063,7 @@ def tearDownClass(cls):
 
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering,
                          ['setUpModule', 'setUpClass', 'setUp', 'test',
                           'tearDownClass', 'tearDownModule',
@@ -1062,9 +1075,9 @@ def tearDownClass(cls):
         method_blow_up = False
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: ModuleExc')
+                         f'{CustomErrorRepr}: ModuleExc')
         self.assertEqual(result.errors[1][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering, ['setUpModule', 'cleanup_exc'])
 
         ordering = []
@@ -1073,9 +1086,9 @@ def tearDownClass(cls):
         method_blow_up = False
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: ClassExc')
+                         f'{CustomErrorRepr}: ClassExc')
         self.assertEqual(result.errors[1][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering, ['setUpModule', 'setUpClass',
                                     'tearDownModule', 'cleanup_exc'])
 
@@ -1085,9 +1098,9 @@ def tearDownClass(cls):
         method_blow_up = True
         result = runTests(TestableTest)
         self.assertEqual(result.errors[0][1].splitlines()[-1],
-                         'Exception: MethodExc')
+                         f'{CustomErrorRepr}: MethodExc')
         self.assertEqual(result.errors[1][1].splitlines()[-1],
-                         'Exception: CleanUpExc')
+                         f'{CustomErrorRepr}: CleanUpExc')
         self.assertEqual(ordering, ['setUpModule', 'setUpClass', 'setUp',
                                     'tearDownClass', 'tearDownModule',
                                     'cleanup_exc'])
diff --git a/Lib/test/test_unittest/test_skipping.py b/Lib/test/test_unittest/test_skipping.py
index f146dcac18ecc0..1a6af06d32b433 100644
--- a/Lib/test/test_unittest/test_skipping.py
+++ b/Lib/test/test_unittest/test_skipping.py
@@ -103,16 +103,16 @@ def test_dont_skip(self): pass
             result = LoggingResult(events)
             self.assertIs(suite.run(result), result)
             self.assertEqual(len(result.skipped), 1)
-            expected = ['startTest', 'addSkip', 'stopTest',
-                        'startTest', 'addSuccess', 'stopTest']
+            expected = ['addSkip', 'stopTest', 'startTest',
+                        'addSuccess', 'stopTest']
             self.assertEqual(events, expected)
-            self.assertEqual(result.testsRun, 2)
+            self.assertEqual(result.testsRun, 1)
             self.assertEqual(result.skipped, [(test_do_skip, "testing")])
             self.assertTrue(result.wasSuccessful())
 
             events = []
             result = test_do_skip.run()
-            self.assertEqual(events, ['startTestRun', 'startTest', 'addSkip',
+            self.assertEqual(events, ['startTestRun', 'addSkip',
                                       'stopTest', 'stopTestRun'])
             self.assertEqual(result.skipped, [(test_do_skip, "testing")])
 
@@ -135,13 +135,13 @@ def test_1(self):
         test = Foo("test_1")
         suite = unittest.TestSuite([test])
         self.assertIs(suite.run(result), result)
-        self.assertEqual(events, ['startTest', 'addSkip', 'stopTest'])
+        self.assertEqual(events, ['addSkip', 'stopTest'])
         self.assertEqual(result.skipped, [(test, "testing")])
         self.assertEqual(record, [])
 
         events = []
         result = test.run()
-        self.assertEqual(events, ['startTestRun', 'startTest', 'addSkip',
+        self.assertEqual(events, ['startTestRun', 'addSkip',
                                   'stopTest', 'stopTestRun'])
         self.assertEqual(result.skipped, [(test, "testing")])
         self.assertEqual(record, [])
diff --git a/Lib/test/test_unittest/testmock/testasync.py b/Lib/test/test_unittest/testmock/testasync.py
index 5f12f9f956674a..f57b83f457f279 100644
--- a/Lib/test/test_unittest/testmock/testasync.py
+++ b/Lib/test/test_unittest/testmock/testasync.py
@@ -232,7 +232,9 @@ async def main():
         run(main())
 
         self.assertTrue(iscoroutinefunction(spec))
+        self.assertTrue(inspect.iscoroutinefunction(spec))
         self.assertTrue(asyncio.iscoroutine(awaitable))
+        self.assertTrue(inspect.iscoroutine(awaitable))
         self.assertEqual(spec.await_count, 1)
         self.assertEqual(spec.await_args, call(1, 2, c=3))
         self.assertEqual(spec.await_args_list, [call(1, 2, c=3)])
@@ -244,6 +246,25 @@ async def main():
         with self.assertRaises(AssertionError):
             spec.assert_any_await(e=1)
 
+    def test_autospec_checks_signature(self):
+        spec = create_autospec(async_func_args)
+        # signature is not checked when called
+        awaitable = spec()
+        self.assertListEqual(spec.mock_calls, [])
+
+        async def main():
+            await awaitable
+
+        # but it is checked when awaited
+        with self.assertRaises(TypeError):
+            run(main())
+
+        # _checksig_ raises before running or awaiting the mock
+        self.assertListEqual(spec.mock_calls, [])
+        self.assertEqual(spec.await_count, 0)
+        self.assertIsNone(spec.await_args)
+        self.assertEqual(spec.await_args_list, [])
+        spec.assert_not_awaited()
 
     def test_patch_with_autospec(self):
 
@@ -253,7 +274,9 @@ async def test_async():
                 self.assertIsInstance(mock_method.mock, AsyncMock)
 
                 self.assertTrue(iscoroutinefunction(mock_method))
+                self.assertTrue(inspect.iscoroutinefunction(mock_method))
                 self.assertTrue(asyncio.iscoroutine(awaitable))
+                self.assertTrue(inspect.iscoroutine(awaitable))
                 self.assertTrue(inspect.isawaitable(awaitable))
 
                 # Verify the default values during mock setup
@@ -436,9 +459,10 @@ async def addition(self, var): pass
         self.assertEqual(output, 10)
 
     async def test_add_side_effect_exception(self):
+        class CustomError(Exception): pass
         async def addition(var): pass
-        mock = AsyncMock(addition, side_effect=Exception('err'))
-        with self.assertRaises(Exception):
+        mock = AsyncMock(addition, side_effect=CustomError('side-effect'))
+        with self.assertRaisesRegex(CustomError, 'side-effect'):
             await mock(5)
 
     async def test_add_side_effect_coroutine(self):
diff --git a/Lib/test/test_unittest/testmock/testmock.py b/Lib/test/test_unittest/testmock/testmock.py
index d1cae47a40eed4..6af8acc3b0617e 100644
--- a/Lib/test/test_unittest/testmock/testmock.py
+++ b/Lib/test/test_unittest/testmock/testmock.py
@@ -38,6 +38,17 @@ def cmeth(cls, a, b, c, d=None): pass
     def smeth(a, b, c, d=None): pass
 
 
+class SomethingElse(object):
+    def __init__(self):
+        self._instance = None
+
+    @property
+    def instance(self):
+        if not self._instance:
+            self._instance = 'object'
+        return self._instance
+
+
 class Typos():
     autospect = None
     auto_spec = None
@@ -234,6 +245,14 @@ class B(object):
             with mock.patch('builtins.open', mock.mock_open()):
                 mock.mock_open()  # should still be valid with open() mocked
 
+    def test_explicit_parent(self):
+        parent = Mock()
+        mock1 = Mock(parent=parent, return_value=None)
+        mock1(1, 2, 3)
+        mock2 = Mock(parent=parent, return_value=None)
+        mock2(4, 5, 6)
+
+        self.assertEqual(parent.mock_calls, [call(1, 2, 3), call(4, 5, 6)])
 
     def test_reset_mock(self):
         parent = Mock()
@@ -1039,7 +1058,7 @@ def test_assert_called_with_failure_message(self):
 
         actual = 'not called.'
         expected = "mock(1, '2', 3, bar='foo')"
-        message = 'expected call not found.\nExpected: %s\nActual: %s'
+        message = 'expected call not found.\nExpected: %s\n  Actual: %s'
         self.assertRaisesWithMsg(
             AssertionError, message % (expected, actual),
             mock.assert_called_with, 1, '2', 3, bar='foo'
@@ -1054,7 +1073,7 @@ def test_assert_called_with_failure_message(self):
         for meth in asserters:
             actual = "foo(1, '2', 3, foo='foo')"
             expected = "foo(1, '2', 3, bar='foo')"
-            message = 'expected call not found.\nExpected: %s\nActual: %s'
+            message = 'expected call not found.\nExpected: %s\n  Actual: %s'
             self.assertRaisesWithMsg(
                 AssertionError, message % (expected, actual),
                 meth, 1, '2', 3, bar='foo'
@@ -1064,7 +1083,7 @@ def test_assert_called_with_failure_message(self):
         for meth in asserters:
             actual = "foo(1, '2', 3, foo='foo')"
             expected = "foo(bar='foo')"
-            message = 'expected call not found.\nExpected: %s\nActual: %s'
+            message = 'expected call not found.\nExpected: %s\n  Actual: %s'
             self.assertRaisesWithMsg(
                 AssertionError, message % (expected, actual),
                 meth, bar='foo'
@@ -1074,7 +1093,7 @@ def test_assert_called_with_failure_message(self):
         for meth in asserters:
             actual = "foo(1, '2', 3, foo='foo')"
             expected = "foo(1, 2, 3)"
-            message = 'expected call not found.\nExpected: %s\nActual: %s'
+            message = 'expected call not found.\nExpected: %s\n  Actual: %s'
             self.assertRaisesWithMsg(
                 AssertionError, message % (expected, actual),
                 meth, 1, 2, 3
@@ -1084,7 +1103,7 @@ def test_assert_called_with_failure_message(self):
         for meth in asserters:
             actual = "foo(1, '2', 3, foo='foo')"
             expected = "foo()"
-            message = 'expected call not found.\nExpected: %s\nActual: %s'
+            message = 'expected call not found.\nExpected: %s\n  Actual: %s'
             self.assertRaisesWithMsg(
                 AssertionError, message % (expected, actual), meth
             )
@@ -1533,7 +1552,7 @@ def f(x=None): pass
                 '^{}$'.format(
                     re.escape('Calls not found.\n'
                               'Expected: [call()]\n'
-                              'Actual: [call(1)]'))) as cm:
+                              '  Actual: [call(1)]'))) as cm:
             mock.assert_has_calls([call()])
         self.assertIsNone(cm.exception.__cause__)
 
@@ -1545,7 +1564,7 @@ def f(x=None): pass
                         'Error processing expected calls.\n'
                         "Errors: [None, TypeError('too many positional arguments')]\n"
                         "Expected: [call(), call(1, 2)]\n"
-                        'Actual: [call(1)]'))) as cm:
+                        '  Actual: [call(1)]'))) as cm:
             mock.assert_has_calls([call(), call(1, 2)])
         self.assertIsInstance(cm.exception.__cause__, TypeError)
 
@@ -2251,7 +2270,7 @@ def test_misspelled_arguments(self):
         class Foo():
             one = 'one'
         # patch, patch.object and create_autospec need to check for misspelled
-        # arguments explicitly and throw a RuntimError if found.
+        # arguments explicitly and throw a RuntimeError if found.
         with self.assertRaises(RuntimeError):
             with patch(f'{__name__}.Something.meth', autospect=True): pass
         with self.assertRaises(RuntimeError):
@@ -2293,6 +2312,26 @@ class Foo():
             f'{__name__}.Typos', autospect=True, set_spec=True, auto_spec=True):
             pass
 
+    def test_property_not_called_with_spec_mock(self):
+        obj = SomethingElse()
+        self.assertIsNone(obj._instance, msg='before mock')
+        mock = Mock(spec=obj)
+        self.assertIsNone(obj._instance, msg='after mock')
+        self.assertEqual('object', obj.instance)
+
+    def test_decorated_async_methods_with_spec_mock(self):
+        class Foo():
+            @classmethod
+            async def class_method(cls):
+                pass
+            @staticmethod
+            async def static_method():
+                pass
+            async def method(self):
+                pass
+        mock = Mock(spec=Foo)
+        for m in (mock.method, mock.class_method, mock.static_method):
+            self.assertIsInstance(m, AsyncMock)
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_unittest/testmock/testthreadingmock.py b/Lib/test/test_unittest/testmock/testthreadingmock.py
new file mode 100644
index 00000000000000..a02b532ed447cd
--- /dev/null
+++ b/Lib/test/test_unittest/testmock/testthreadingmock.py
@@ -0,0 +1,201 @@
+import time
+import unittest
+import concurrent.futures
+
+from test.support import threading_helper
+from unittest.mock import patch, ThreadingMock
+
+
+threading_helper.requires_working_threading(module=True)
+
+VERY_SHORT_TIMEOUT = 0.1
+
+
+class Something:
+    def method_1(self):
+        pass  # pragma: no cover
+
+    def method_2(self):
+        pass  # pragma: no cover
+
+
+class TestThreadingMock(unittest.TestCase):
+    def _call_after_delay(self, func, /, *args, **kwargs):
+        time.sleep(kwargs.pop("delay"))
+        func(*args, **kwargs)
+
+    def setUp(self):
+        self._executor = concurrent.futures.ThreadPoolExecutor(max_workers=5)
+
+    def tearDown(self):
+        self._executor.shutdown()
+
+    def run_async(self, func, /, *args, delay=0, **kwargs):
+        self._executor.submit(
+            self._call_after_delay, func, *args, **kwargs, delay=delay
+        )
+
+    def _make_mock(self, *args, **kwargs):
+        return ThreadingMock(*args, **kwargs)
+
+    def test_spec(self):
+        waitable_mock = self._make_mock(spec=Something)
+
+        with patch(f"{__name__}.Something", waitable_mock) as m:
+            something = m()
+
+            self.assertIsInstance(something.method_1, ThreadingMock)
+            self.assertIsInstance(something.method_1().method_2(), ThreadingMock)
+
+            with self.assertRaises(AttributeError):
+                m.test
+
+    def test_side_effect(self):
+        waitable_mock = self._make_mock()
+
+        with patch(f"{__name__}.Something", waitable_mock):
+            something = Something()
+            something.method_1.side_effect = [1]
+
+            self.assertEqual(something.method_1(), 1)
+
+    def test_instance_check(self):
+        waitable_mock = self._make_mock()
+
+        with patch(f"{__name__}.Something", waitable_mock):
+            something = Something()
+
+            self.assertIsInstance(something.method_1, ThreadingMock)
+            self.assertIsInstance(something.method_1().method_2(), ThreadingMock)
+
+    def test_dynamic_child_mocks_are_threading_mocks(self):
+        waitable_mock = self._make_mock()
+        self.assertIsInstance(waitable_mock.child, ThreadingMock)
+
+    def test_dynamic_child_mocks_inherit_timeout(self):
+        mock1 = self._make_mock()
+        self.assertIs(mock1._mock_wait_timeout, None)
+        mock2 = self._make_mock(timeout=2)
+        self.assertEqual(mock2._mock_wait_timeout, 2)
+        mock3 = self._make_mock(timeout=3)
+        self.assertEqual(mock3._mock_wait_timeout, 3)
+
+        self.assertIs(mock1.child._mock_wait_timeout, None)
+        self.assertEqual(mock2.child._mock_wait_timeout, 2)
+        self.assertEqual(mock3.child._mock_wait_timeout, 3)
+
+        self.assertEqual(mock2.really().__mul__().complex._mock_wait_timeout, 2)
+
+    def test_no_name_clash(self):
+        waitable_mock = self._make_mock()
+        waitable_mock._event = "myevent"
+        waitable_mock.event = "myevent"
+        waitable_mock.timeout = "mytimeout"
+        waitable_mock("works")
+        waitable_mock.wait_until_called()
+        waitable_mock.wait_until_any_call_with("works")
+
+    def test_patch(self):
+        waitable_mock = self._make_mock(spec=Something)
+
+        with patch(f"{__name__}.Something", waitable_mock):
+            something = Something()
+            something.method_1()
+            something.method_1.wait_until_called()
+
+    def test_wait_already_called_success(self):
+        waitable_mock = self._make_mock(spec=Something)
+        waitable_mock.method_1()
+        waitable_mock.method_1.wait_until_called()
+        waitable_mock.method_1.wait_until_any_call_with()
+        waitable_mock.method_1.assert_called()
+
+    def test_wait_until_called_success(self):
+        waitable_mock = self._make_mock(spec=Something)
+        self.run_async(waitable_mock.method_1, delay=VERY_SHORT_TIMEOUT)
+        waitable_mock.method_1.wait_until_called()
+
+    def test_wait_until_called_method_timeout(self):
+        waitable_mock = self._make_mock(spec=Something)
+        with self.assertRaises(AssertionError):
+            waitable_mock.method_1.wait_until_called(timeout=VERY_SHORT_TIMEOUT)
+
+    def test_wait_until_called_instance_timeout(self):
+        waitable_mock = self._make_mock(spec=Something, timeout=VERY_SHORT_TIMEOUT)
+        with self.assertRaises(AssertionError):
+            waitable_mock.method_1.wait_until_called()
+
+    def test_wait_until_called_global_timeout(self):
+        with patch.object(ThreadingMock, "DEFAULT_TIMEOUT"):
+            ThreadingMock.DEFAULT_TIMEOUT = VERY_SHORT_TIMEOUT
+            waitable_mock = self._make_mock(spec=Something)
+            with self.assertRaises(AssertionError):
+                waitable_mock.method_1.wait_until_called()
+
+    def test_wait_until_any_call_with_success(self):
+        waitable_mock = self._make_mock()
+        self.run_async(waitable_mock, delay=VERY_SHORT_TIMEOUT)
+        waitable_mock.wait_until_any_call_with()
+
+    def test_wait_until_any_call_with_instance_timeout(self):
+        waitable_mock = self._make_mock(timeout=VERY_SHORT_TIMEOUT)
+        with self.assertRaises(AssertionError):
+            waitable_mock.wait_until_any_call_with()
+
+    def test_wait_until_any_call_global_timeout(self):
+        with patch.object(ThreadingMock, "DEFAULT_TIMEOUT"):
+            ThreadingMock.DEFAULT_TIMEOUT = VERY_SHORT_TIMEOUT
+            waitable_mock = self._make_mock()
+            with self.assertRaises(AssertionError):
+                waitable_mock.wait_until_any_call_with()
+
+    def test_wait_until_any_call_positional(self):
+        waitable_mock = self._make_mock(timeout=VERY_SHORT_TIMEOUT)
+        waitable_mock.method_1(1, 2, 3)
+        waitable_mock.method_1.wait_until_any_call_with(1, 2, 3)
+        with self.assertRaises(AssertionError):
+            waitable_mock.method_1.wait_until_any_call_with(2, 3, 1)
+        with self.assertRaises(AssertionError):
+            waitable_mock.method_1.wait_until_any_call_with()
+
+    def test_wait_until_any_call_kw(self):
+        waitable_mock = self._make_mock(timeout=VERY_SHORT_TIMEOUT)
+        waitable_mock.method_1(a=1, b=2)
+        waitable_mock.method_1.wait_until_any_call_with(a=1, b=2)
+        with self.assertRaises(AssertionError):
+            waitable_mock.method_1.wait_until_any_call_with(a=2, b=1)
+        with self.assertRaises(AssertionError):
+            waitable_mock.method_1.wait_until_any_call_with()
+
+    def test_magic_methods_success(self):
+        waitable_mock = self._make_mock()
+        str(waitable_mock)
+        waitable_mock.__str__.wait_until_called()
+        waitable_mock.__str__.assert_called()
+
+    def test_reset_mock_resets_wait(self):
+        m = self._make_mock(timeout=VERY_SHORT_TIMEOUT)
+
+        with self.assertRaises(AssertionError):
+            m.wait_until_called()
+        with self.assertRaises(AssertionError):
+            m.wait_until_any_call_with()
+        m()
+        m.wait_until_called()
+        m.wait_until_any_call_with()
+        m.assert_called_once()
+
+        m.reset_mock()
+
+        with self.assertRaises(AssertionError):
+            m.wait_until_called()
+        with self.assertRaises(AssertionError):
+            m.wait_until_any_call_with()
+        m()
+        m.wait_until_called()
+        m.wait_until_any_call_with()
+        m.assert_called_once()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_unittest/testmock/testwith.py b/Lib/test/test_unittest/testmock/testwith.py
index 8dc8eb1137691f..56cb16394fac40 100644
--- a/Lib/test/test_unittest/testmock/testwith.py
+++ b/Lib/test/test_unittest/testmock/testwith.py
@@ -158,7 +158,7 @@ def test_mock_open_context_manager(self):
                 f.read()
 
         expected_calls = [call('foo'), call().__enter__(), call().read(),
-                          call().__exit__(None, None, None)]
+                          call().__exit__(None, None, None), call().close()]
         self.assertEqual(mock.mock_calls, expected_calls)
         self.assertIs(f, handle)
 
@@ -172,9 +172,9 @@ def test_mock_open_context_manager_multiple_times(self):
 
         expected_calls = [
             call('foo'), call().__enter__(), call().read(),
-            call().__exit__(None, None, None),
+            call().__exit__(None, None, None), call().close(),
             call('bar'), call().__enter__(), call().read(),
-            call().__exit__(None, None, None)]
+            call().__exit__(None, None, None), call().close()]
         self.assertEqual(mock.mock_calls, expected_calls)
 
     def test_explicit_mock(self):
diff --git a/Lib/test/test_unpack.py b/Lib/test/test_unpack.py
index f5ca1d455b5c6f..515ec128a08a9c 100644
--- a/Lib/test/test_unpack.py
+++ b/Lib/test/test_unpack.py
@@ -162,7 +162,7 @@ def test_extended_oparg_not_ignored(self):
         ns = {}
         exec(code, ns)
         unpack_400 = ns["unpack_400"]
-        # Warm up the the function for quickening (PEP 659)
+        # Warm up the function for quickening (PEP 659)
         for _ in range(30):
             y = unpack_400(range(400))
             self.assertEqual(y, 399)
diff --git a/Lib/test/test_unparse.py b/Lib/test/test_unparse.py
index 88c7c3a0af8771..6f698a8d891815 100644
--- a/Lib/test/test_unparse.py
+++ b/Lib/test/test_unparse.py
@@ -1,4 +1,4 @@
-"""Tests for the unparse.py script in the Tools/parser directory."""
+"""Tests for ast.unparse."""
 
 import unittest
 import test.support
@@ -197,6 +197,10 @@ def test_fstrings_complicated(self):
         self.check_ast_roundtrip('''f"a\\r\\nb"''')
         self.check_ast_roundtrip('''f"\\u2028{'x'}"''')
 
+    def test_fstrings_pep701(self):
+        self.check_ast_roundtrip('f" something { my_dict["key"] } something else "')
+        self.check_ast_roundtrip('f"{f"{f"{f"{f"{f"{1+1}"}"}"}"}"}"')
+
     def test_strings(self):
         self.check_ast_roundtrip("u'foo'")
         self.check_ast_roundtrip("r'foo'")
@@ -378,8 +382,15 @@ def test_invalid_fstring_value(self):
             )
         )
 
-    def test_invalid_fstring_backslash(self):
-        self.check_invalid(ast.FormattedValue(value=ast.Constant(value="\\\\")))
+    def test_fstring_backslash(self):
+        # valid since Python 3.12
+        self.assertEqual(ast.unparse(
+                            ast.FormattedValue(
+                                value=ast.Constant(value="\\\\"),
+                                conversion=-1,
+                                format_spec=None,
+                            )
+                        ), "{'\\\\\\\\'}")
 
     def test_invalid_yield_from(self):
         self.check_invalid(ast.YieldFrom(value=None))
@@ -502,11 +513,11 @@ def test_class_bases_and_keywords(self):
         self.check_src_roundtrip("class X(*args, **kwargs):\n    pass")
 
     def test_fstrings(self):
-        self.check_src_roundtrip('''f\'\'\'-{f"""*{f"+{f'.{x}.'}+"}*"""}-\'\'\'''')
-        self.check_src_roundtrip('''f"\\u2028{'x'}"''')
+        self.check_src_roundtrip("f'-{f'*{f'+{f'.{x}.'}+'}*'}-'")
+        self.check_src_roundtrip("f'\\u2028{'x'}'")
         self.check_src_roundtrip(r"f'{x}\n'")
-        self.check_src_roundtrip('''f''\'{"""\n"""}\\n''\'''')
-        self.check_src_roundtrip('''f''\'{f"""{x}\n"""}\\n''\'''')
+        self.check_src_roundtrip("f'{'\\n'}\\n'")
+        self.check_src_roundtrip("f'{f'{x}\\n'}\\n'")
 
     def test_docstrings(self):
         docstrings = (
@@ -624,6 +635,92 @@ def test_star_expr_assign_target_multiple(self):
         self.check_src_roundtrip("[a, b] = [c, d] = [e, f] = g")
         self.check_src_roundtrip("a, b = [c, d] = e, f = g")
 
+    def test_multiquote_joined_string(self):
+        self.check_ast_roundtrip("f\"'''{1}\\\"\\\"\\\"\" ")
+        self.check_ast_roundtrip("""f"'''{1}""\\"" """)
+        self.check_ast_roundtrip("""f'""\"{1}''' """)
+        self.check_ast_roundtrip("""f'""\"{1}""\\"' """)
+
+        self.check_ast_roundtrip("""f"'''{"\\n"}""\\"" """)
+        self.check_ast_roundtrip("""f'""\"{"\\n"}''' """)
+        self.check_ast_roundtrip("""f'""\"{"\\n"}""\\"' """)
+
+        self.check_ast_roundtrip("""f'''""\"''\\'{"\\n"}''' """)
+        self.check_ast_roundtrip("""f'''""\"''\\'{"\\n\\"'"}''' """)
+        self.check_ast_roundtrip("""f'''""\"''\\'{""\"\\n\\"'''""\" '''\\n'''}''' """)
+
+
+class ManualASTCreationTestCase(unittest.TestCase):
+    """Test that AST nodes created without a type_params field unparse correctly."""
+
+    def test_class(self):
+        node = ast.ClassDef(name="X", bases=[], keywords=[], body=[ast.Pass()], decorator_list=[])
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "class X:\n    pass")
+
+    def test_class_with_type_params(self):
+        node = ast.ClassDef(name="X", bases=[], keywords=[], body=[ast.Pass()], decorator_list=[],
+                             type_params=[ast.TypeVar("T")])
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "class X[T]:\n    pass")
+
+    def test_function(self):
+        node = ast.FunctionDef(
+            name="f",
+            args=ast.arguments(posonlyargs=[], args=[], vararg=None, kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]),
+            body=[ast.Pass()],
+            decorator_list=[],
+            returns=None,
+        )
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "def f():\n    pass")
+
+    def test_function_with_type_params(self):
+        node = ast.FunctionDef(
+            name="f",
+            args=ast.arguments(posonlyargs=[], args=[], vararg=None, kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]),
+            body=[ast.Pass()],
+            decorator_list=[],
+            returns=None,
+            type_params=[ast.TypeVar("T")],
+        )
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "def f[T]():\n    pass")
+
+    def test_function_with_type_params_and_bound(self):
+        node = ast.FunctionDef(
+            name="f",
+            args=ast.arguments(posonlyargs=[], args=[], vararg=None, kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]),
+            body=[ast.Pass()],
+            decorator_list=[],
+            returns=None,
+            type_params=[ast.TypeVar("T", bound=ast.Name("int"))],
+        )
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "def f[T: int]():\n    pass")
+
+    def test_async_function(self):
+        node = ast.AsyncFunctionDef(
+            name="f",
+            args=ast.arguments(posonlyargs=[], args=[], vararg=None, kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]),
+            body=[ast.Pass()],
+            decorator_list=[],
+            returns=None,
+        )
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "async def f():\n    pass")
+
+    def test_async_function_with_type_params(self):
+        node = ast.AsyncFunctionDef(
+            name="f",
+            args=ast.arguments(posonlyargs=[], args=[], vararg=None, kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]),
+            body=[ast.Pass()],
+            decorator_list=[],
+            returns=None,
+            type_params=[ast.TypeVar("T")],
+        )
+        ast.fix_missing_locations(node)
+        self.assertEqual(ast.unparse(node), "async def f[T]():\n    pass")
 
 
 class DirectoryTestCase(ASTTestCase):
@@ -633,7 +730,8 @@ class DirectoryTestCase(ASTTestCase):
     test_directories = (lib_dir, lib_dir / "test")
     run_always_files = {"test_grammar.py", "test_syntax.py", "test_compile.py",
                         "test_ast.py", "test_asdl_parser.py", "test_fstring.py",
-                        "test_patma.py"}
+                        "test_patma.py", "test_type_alias.py", "test_type_params.py",
+                        "test_tokenize.py"}
 
     _files_to_test = None
 
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index 2df74f5e6f99b2..6bb0fb303fa202 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -597,15 +597,6 @@ def test_URLopener_deprecation(self):
         with warnings_helper.check_warnings(('',DeprecationWarning)):
             urllib.request.URLopener()
 
-    @unittest.skipUnless(ssl, "ssl module required")
-    def test_cafile_and_context(self):
-        context = ssl.create_default_context()
-        with warnings_helper.check_warnings(('', DeprecationWarning)):
-            with self.assertRaises(ValueError):
-                urllib.request.urlopen(
-                    "https://localhost", cafile="/nonexistent/path", context=context
-                )
-
 
 class urlopen_DataTests(unittest.TestCase):
     """Test urlopen() opening a data URL."""
diff --git a/Lib/test/test_urllib2_localnet.py b/Lib/test/test_urllib2_localnet.py
index f4729358557c95..50c491a3cfd3d0 100644
--- a/Lib/test/test_urllib2_localnet.py
+++ b/Lib/test/test_urllib2_localnet.py
@@ -11,7 +11,6 @@
 from test import support
 from test.support import hashlib_helper
 from test.support import threading_helper
-from test.support import warnings_helper
 
 try:
     import ssl
@@ -22,9 +21,9 @@
 
 here = os.path.dirname(__file__)
 # Self-signed cert file for 'localhost'
-CERT_localhost = os.path.join(here, 'keycert.pem')
+CERT_localhost = os.path.join(here, 'certdata', 'keycert.pem')
 # Self-signed cert file for 'fakehostname'
-CERT_fakehostname = os.path.join(here, 'keycert2.pem')
+CERT_fakehostname = os.path.join(here, 'certdata', 'keycert2.pem')
 
 
 # Loopback http server infrastructure
@@ -568,31 +567,6 @@ def test_https(self):
         data = self.urlopen("https://localhost:%s/bizarre" % handler.port, context=context)
         self.assertEqual(data, b"we care a bit")
 
-    def test_https_with_cafile(self):
-        handler = self.start_https_server(certfile=CERT_localhost)
-        with warnings_helper.check_warnings(('', DeprecationWarning)):
-            # Good cert
-            data = self.urlopen("https://localhost:%s/bizarre" % handler.port,
-                                cafile=CERT_localhost)
-            self.assertEqual(data, b"we care a bit")
-            # Bad cert
-            with self.assertRaises(urllib.error.URLError) as cm:
-                self.urlopen("https://localhost:%s/bizarre" % handler.port,
-                             cafile=CERT_fakehostname)
-            # Good cert, but mismatching hostname
-            handler = self.start_https_server(certfile=CERT_fakehostname)
-            with self.assertRaises(urllib.error.URLError) as cm:
-                self.urlopen("https://localhost:%s/bizarre" % handler.port,
-                             cafile=CERT_fakehostname)
-
-    def test_https_with_cadefault(self):
-        handler = self.start_https_server(certfile=CERT_localhost)
-        # Self-signed cert should fail verification with system certificate store
-        with warnings_helper.check_warnings(('', DeprecationWarning)):
-            with self.assertRaises(urllib.error.URLError) as cm:
-                self.urlopen("https://localhost:%s/bizarre" % handler.port,
-                             cadefault=True)
-
     def test_https_sni(self):
         if ssl is None:
             self.skipTest("ssl module required")
diff --git a/Lib/test/test_urllib2net.py b/Lib/test/test_urllib2net.py
index d8d882b2d33589..f0874d8d3ce463 100644
--- a/Lib/test/test_urllib2net.py
+++ b/Lib/test/test_urllib2net.py
@@ -133,6 +133,7 @@ def setUp(self):
     # XXX The rest of these tests aren't very good -- they don't check much.
     # They do sometimes catch some major disasters, though.
 
+    @support.requires_resource('walltime')
     def test_ftp(self):
         # Testing the same URL twice exercises the caching in CacheFTPHandler
         urls = [
@@ -196,6 +197,7 @@ def test_urlwithfrag(self):
             self.assertEqual(res.geturl(),
                     "http://www.pythontest.net/index.html#frag")
 
+    @support.requires_resource('walltime')
     def test_redirect_url_withfrag(self):
         redirect_url_with_frag = "http://www.pythontest.net/redir/with_frag/"
         with socket_helper.transient_internet(redirect_url_with_frag):
@@ -334,6 +336,7 @@ def test_http_timeout(self):
 
     FTP_HOST = 'ftp://www.pythontest.net/'
 
+    @support.requires_resource('walltime')
     def test_ftp_basic(self):
         self.assertIsNone(socket.getdefaulttimeout())
         with socket_helper.transient_internet(self.FTP_HOST, timeout=None):
@@ -352,6 +355,7 @@ def test_ftp_default_timeout(self):
                 socket.setdefaulttimeout(None)
             self.assertEqual(u.fp.fp.raw._sock.gettimeout(), 60)
 
+    @support.requires_resource('walltime')
     def test_ftp_no_timeout(self):
         self.assertIsNone(socket.getdefaulttimeout())
         with socket_helper.transient_internet(self.FTP_HOST):
@@ -363,6 +367,7 @@ def test_ftp_no_timeout(self):
                 socket.setdefaulttimeout(None)
             self.assertIsNone(u.fp.fp.raw._sock.gettimeout())
 
+    @support.requires_resource('walltime')
     def test_ftp_timeout(self):
         with socket_helper.transient_internet(self.FTP_HOST):
             u = _urlopen_with_retry(self.FTP_HOST, timeout=60)
diff --git a/Lib/test/test_urllibnet.py b/Lib/test/test_urllibnet.py
index 773101ce41f602..49a3b5afdebb2f 100644
--- a/Lib/test/test_urllibnet.py
+++ b/Lib/test/test_urllibnet.py
@@ -109,6 +109,7 @@ def test_getcode(self):
                 open_url.close()
             self.assertEqual(code, 404)
 
+    @support.requires_resource('walltime')
     def test_bad_address(self):
         # Make sure proper exception is raised when connecting to a bogus
         # address.
@@ -191,6 +192,7 @@ def test_header(self):
 
     logo = "http://www.pythontest.net/"
 
+    @support.requires_resource('walltime')
     def test_data_header(self):
         with self.urlretrieve(self.logo) as (file_location, fileheaders):
             datevalue = fileheaders.get('Date')
diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
index e324babdd5ed0b..625c6dc88796b6 100644
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -654,6 +654,65 @@ def test_urlsplit_remove_unsafe_bytes(self):
             self.assertEqual(p.scheme, "http")
             self.assertEqual(p.geturl(), "http://www.python.org/javascript:alert('msg')/?query=something#fragment")
 
+    def test_urlsplit_strip_url(self):
+        noise = bytes(range(0, 0x20 + 1))
+        base_url = "http://User:Pass@www.python.org:080/doc/?query=yes#frag"
+
+        url = noise.decode("utf-8") + base_url
+        p = urllib.parse.urlsplit(url)
+        self.assertEqual(p.scheme, "http")
+        self.assertEqual(p.netloc, "User:Pass@www.python.org:080")
+        self.assertEqual(p.path, "/doc/")
+        self.assertEqual(p.query, "query=yes")
+        self.assertEqual(p.fragment, "frag")
+        self.assertEqual(p.username, "User")
+        self.assertEqual(p.password, "Pass")
+        self.assertEqual(p.hostname, "www.python.org")
+        self.assertEqual(p.port, 80)
+        self.assertEqual(p.geturl(), base_url)
+
+        url = noise + base_url.encode("utf-8")
+        p = urllib.parse.urlsplit(url)
+        self.assertEqual(p.scheme, b"http")
+        self.assertEqual(p.netloc, b"User:Pass@www.python.org:080")
+        self.assertEqual(p.path, b"/doc/")
+        self.assertEqual(p.query, b"query=yes")
+        self.assertEqual(p.fragment, b"frag")
+        self.assertEqual(p.username, b"User")
+        self.assertEqual(p.password, b"Pass")
+        self.assertEqual(p.hostname, b"www.python.org")
+        self.assertEqual(p.port, 80)
+        self.assertEqual(p.geturl(), base_url.encode("utf-8"))
+
+        # Test that trailing space is preserved as some applications rely on
+        # this within query strings.
+        query_spaces_url = "https://www.python.org:88/doc/?query=    "
+        p = urllib.parse.urlsplit(noise.decode("utf-8") + query_spaces_url)
+        self.assertEqual(p.scheme, "https")
+        self.assertEqual(p.netloc, "www.python.org:88")
+        self.assertEqual(p.path, "/doc/")
+        self.assertEqual(p.query, "query=    ")
+        self.assertEqual(p.port, 88)
+        self.assertEqual(p.geturl(), query_spaces_url)
+
+        p = urllib.parse.urlsplit("www.pypi.org ")
+        # That "hostname" gets considered a "path" due to the
+        # trailing space and our existing logic...  YUCK...
+        # and re-assembles via geturl aka unurlsplit into the original.
+        # django.core.validators.URLValidator (at least through v3.2) relies on
+        # this, for better or worse, to catch it in a ValidationError via its
+        # regular expressions.
+        # Here we test the basic round trip concept of such a trailing space.
+        self.assertEqual(urllib.parse.urlunsplit(p), "www.pypi.org ")
+
+        # with scheme as cache-key
+        url = "//www.python.org/"
+        scheme = noise.decode("utf-8") + "https" + noise.decode("utf-8")
+        for _ in range(2):
+            p = urllib.parse.urlsplit(url, scheme=scheme)
+            self.assertEqual(p.scheme, "https")
+            self.assertEqual(p.geturl(), "https://www.python.org/")
+
     def test_attributes_bad_port(self):
         """Check handling of invalid ports."""
         for bytes in (False, True):
@@ -661,7 +720,7 @@ def test_attributes_bad_port(self):
                 for port in ("foo", "1.5", "-1", "0x10", "-0", "1_1", " 1", "1 ", "६"):
                     with self.subTest(bytes=bytes, parse=parse, port=port):
                         netloc = "www.example.net:" + port
-                        url = "http://" + netloc
+                        url = "http://" + netloc + "/"
                         if bytes:
                             if netloc.isascii() and port.isascii():
                                 netloc = netloc.encode("ascii")
diff --git a/Lib/test/test_userdict.py b/Lib/test/test_userdict.py
index 483910aaa4620e..9a03f2d04ce970 100644
--- a/Lib/test/test_userdict.py
+++ b/Lib/test/test_userdict.py
@@ -1,6 +1,6 @@
 # Check every path through every method of UserDict
 
-from test import mapping_tests
+from test import mapping_tests, support
 import unittest
 import collections
 
@@ -213,6 +213,11 @@ class G(collections.UserDict):
         else:
             self.fail("g[42] didn't raise KeyError")
 
+    # Decorate existing test with recursion limit, because
+    # the test is for C structure, but `UserDict` is a Python structure.
+    test_repr_deep = support.infinite_recursion()(
+        mapping_tests.TestHashMappingProtocol.test_repr_deep,
+    )
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_userlist.py b/Lib/test/test_userlist.py
index 1ed67dac805967..76d253753528b0 100644
--- a/Lib/test/test_userlist.py
+++ b/Lib/test/test_userlist.py
@@ -3,6 +3,8 @@
 from collections import UserList
 from test import list_tests
 import unittest
+from test import support
+
 
 class UserListTest(list_tests.CommonTest):
     type2test = UserList
@@ -65,5 +67,11 @@ def test_userlist_copy(self):
         self.assertEqual(u, v)
         self.assertEqual(type(u), type(v))
 
+    # Decorate existing test with recursion limit, because
+    # the test is for C structure, but `UserList` is a Python structure.
+    test_repr_deep = support.infinite_recursion()(
+        list_tests.CommonTest.test_repr_deep,
+    )
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_userstring.py b/Lib/test/test_userstring.py
index 51b4f6041e49bf..74df52f5412af0 100644
--- a/Lib/test/test_userstring.py
+++ b/Lib/test/test_userstring.py
@@ -7,8 +7,7 @@
 from collections import UserString
 
 class UserStringTest(
-    string_tests.CommonTest,
-    string_tests.MixinStrUnicodeUserStringTest,
+    string_tests.StringLikeTest,
     unittest.TestCase
     ):
 
diff --git a/Lib/test/test_utf8_mode.py b/Lib/test/test_utf8_mode.py
index ec29ba6d51b127..f66881044e16df 100644
--- a/Lib/test/test_utf8_mode.py
+++ b/Lib/test/test_utf8_mode.py
@@ -9,10 +9,9 @@
 import unittest
 from test import support
 from test.support.script_helper import assert_python_ok, assert_python_failure
-from test.support import os_helper
+from test.support import os_helper, MS_WINDOWS
 
 
-MS_WINDOWS = (sys.platform == 'win32')
 POSIX_LOCALES = ('C', 'POSIX')
 VXWORKS = (sys.platform == "vxworks")
 
diff --git a/Lib/test/test_utf8source.py b/Lib/test/test_utf8source.py
index 97dced8a622889..c42b6aaaab579d 100644
--- a/Lib/test/test_utf8source.py
+++ b/Lib/test/test_utf8source.py
@@ -1,5 +1,3 @@
-# This file is marked as binary in the CVS, to prevent MacCVS from recoding it.
-
 import unittest
 
 class PEP3120Test(unittest.TestCase):
@@ -16,7 +14,7 @@ def test_pep3120(self):
 
     def test_badsyntax(self):
         try:
-            import test.badsyntax_pep3120
+            import test.tokenizedata.badsyntax_pep3120
         except SyntaxError as msg:
             msg = str(msg).lower()
             self.assertTrue('utf-8' in msg)
diff --git a/Lib/test/test_uu.py b/Lib/test/test_uu.py
deleted file mode 100644
index a189d6bc4b05d3..00000000000000
--- a/Lib/test/test_uu.py
+++ /dev/null
@@ -1,287 +0,0 @@
-"""
-Tests for uu module.
-Nick Mathewson
-"""
-
-import unittest
-from test.support import os_helper, warnings_helper
-
-uu = warnings_helper.import_deprecated("uu")
-
-import os
-import stat
-import sys
-import io
-
-plaintext = b"The symbols on top of your keyboard are !@#$%^&*()_+|~\n"
-
-encodedtext = b"""\
-M5&AE('-Y;6)O;',@;VX@=&]P(&]F('EO=7(@:V5Y8F]A<F0@87)E("% (R0E
-*7B8J*"E?*WQ^"@  """
-
-# Stolen from io.py
-class FakeIO(io.TextIOWrapper):
-    """Text I/O implementation using an in-memory buffer.
-
-    Can be a used as a drop-in replacement for sys.stdin and sys.stdout.
-    """
-
-    # XXX This is really slow, but fully functional
-
-    def __init__(self, initial_value="", encoding="utf-8",
-                 errors="strict", newline="\n"):
-        super(FakeIO, self).__init__(io.BytesIO(),
-                                     encoding=encoding,
-                                     errors=errors,
-                                     newline=newline)
-        self._encoding = encoding
-        self._errors = errors
-        if initial_value:
-            if not isinstance(initial_value, str):
-                initial_value = str(initial_value)
-            self.write(initial_value)
-            self.seek(0)
-
-    def getvalue(self):
-        self.flush()
-        return self.buffer.getvalue().decode(self._encoding, self._errors)
-
-
-def encodedtextwrapped(mode, filename, backtick=False):
-    if backtick:
-        res = (bytes("begin %03o %s\n" % (mode, filename), "ascii") +
-               encodedtext.replace(b' ', b'`') + b"\n`\nend\n")
-    else:
-        res = (bytes("begin %03o %s\n" % (mode, filename), "ascii") +
-               encodedtext + b"\n \nend\n")
-    return res
-
-class UUTest(unittest.TestCase):
-
-    def test_encode(self):
-        inp = io.BytesIO(plaintext)
-        out = io.BytesIO()
-        uu.encode(inp, out, "t1")
-        self.assertEqual(out.getvalue(), encodedtextwrapped(0o666, "t1"))
-        inp = io.BytesIO(plaintext)
-        out = io.BytesIO()
-        uu.encode(inp, out, "t1", 0o644)
-        self.assertEqual(out.getvalue(), encodedtextwrapped(0o644, "t1"))
-        inp = io.BytesIO(plaintext)
-        out = io.BytesIO()
-        uu.encode(inp, out, "t1", backtick=True)
-        self.assertEqual(out.getvalue(), encodedtextwrapped(0o666, "t1", True))
-        with self.assertRaises(TypeError):
-            uu.encode(inp, out, "t1", 0o644, True)
-
-    @os_helper.skip_unless_working_chmod
-    def test_decode(self):
-        for backtick in True, False:
-            inp = io.BytesIO(encodedtextwrapped(0o666, "t1", backtick=backtick))
-            out = io.BytesIO()
-            uu.decode(inp, out)
-            self.assertEqual(out.getvalue(), plaintext)
-            inp = io.BytesIO(
-                b"UUencoded files may contain many lines,\n" +
-                b"even some that have 'begin' in them.\n" +
-                encodedtextwrapped(0o666, "t1", backtick=backtick)
-            )
-            out = io.BytesIO()
-            uu.decode(inp, out)
-            self.assertEqual(out.getvalue(), plaintext)
-
-    def test_truncatedinput(self):
-        inp = io.BytesIO(b"begin 644 t1\n" + encodedtext)
-        out = io.BytesIO()
-        try:
-            uu.decode(inp, out)
-            self.fail("No exception raised")
-        except uu.Error as e:
-            self.assertEqual(str(e), "Truncated input file")
-
-    def test_missingbegin(self):
-        inp = io.BytesIO(b"")
-        out = io.BytesIO()
-        try:
-            uu.decode(inp, out)
-            self.fail("No exception raised")
-        except uu.Error as e:
-            self.assertEqual(str(e), "No valid begin line found in input file")
-
-    def test_garbage_padding(self):
-        # Issue #22406
-        encodedtext1 = (
-            b"begin 644 file\n"
-            # length 1; bits 001100 111111 111111 111111
-            b"\x21\x2C\x5F\x5F\x5F\n"
-            b"\x20\n"
-            b"end\n"
-        )
-        encodedtext2 = (
-            b"begin 644 file\n"
-            # length 1; bits 001100 111111 111111 111111
-            b"\x21\x2C\x5F\x5F\x5F\n"
-            b"\x60\n"
-            b"end\n"
-        )
-        plaintext = b"\x33"  # 00110011
-
-        for encodedtext in encodedtext1, encodedtext2:
-            with self.subTest("uu.decode()"):
-                inp = io.BytesIO(encodedtext)
-                out = io.BytesIO()
-                uu.decode(inp, out, quiet=True)
-                self.assertEqual(out.getvalue(), plaintext)
-
-            with self.subTest("uu_codec"):
-                import codecs
-                decoded = codecs.decode(encodedtext, "uu_codec")
-                self.assertEqual(decoded, plaintext)
-
-    def test_newlines_escaped(self):
-        # Test newlines are escaped with uu.encode
-        inp = io.BytesIO(plaintext)
-        out = io.BytesIO()
-        filename = "test.txt\n\roverflow.txt"
-        safefilename = b"test.txt\\n\\roverflow.txt"
-        uu.encode(inp, out, filename)
-        self.assertIn(safefilename, out.getvalue())
-
-    def test_no_directory_traversal(self):
-        relative_bad = b"""\
-begin 644 ../../../../../../../../tmp/test1
-$86)C"@``
-`
-end
-"""
-        with self.assertRaisesRegex(uu.Error, 'directory'):
-            uu.decode(io.BytesIO(relative_bad))
-        if os.altsep:
-            relative_bad_bs = relative_bad.replace(b'/', b'\\')
-            with self.assertRaisesRegex(uu.Error, 'directory'):
-                uu.decode(io.BytesIO(relative_bad_bs))
-
-        absolute_bad = b"""\
-begin 644 /tmp/test2
-$86)C"@``
-`
-end
-"""
-        with self.assertRaisesRegex(uu.Error, 'directory'):
-            uu.decode(io.BytesIO(absolute_bad))
-        if os.altsep:
-            absolute_bad_bs = absolute_bad.replace(b'/', b'\\')
-            with self.assertRaisesRegex(uu.Error, 'directory'):
-                uu.decode(io.BytesIO(absolute_bad_bs))
-
-
-class UUStdIOTest(unittest.TestCase):
-
-    def setUp(self):
-        self.stdin = sys.stdin
-        self.stdout = sys.stdout
-
-    def tearDown(self):
-        sys.stdin = self.stdin
-        sys.stdout = self.stdout
-
-    def test_encode(self):
-        sys.stdin = FakeIO(plaintext.decode("ascii"))
-        sys.stdout = FakeIO()
-        uu.encode("-", "-", "t1", 0o666)
-        self.assertEqual(sys.stdout.getvalue(),
-                         encodedtextwrapped(0o666, "t1").decode("ascii"))
-
-    def test_decode(self):
-        sys.stdin = FakeIO(encodedtextwrapped(0o666, "t1").decode("ascii"))
-        sys.stdout = FakeIO()
-        uu.decode("-", "-")
-        stdout = sys.stdout
-        sys.stdout = self.stdout
-        sys.stdin = self.stdin
-        self.assertEqual(stdout.getvalue(), plaintext.decode("ascii"))
-
-class UUFileTest(unittest.TestCase):
-
-    def setUp(self):
-        # uu.encode() supports only ASCII file names
-        self.tmpin  = os_helper.TESTFN_ASCII + "i"
-        self.tmpout = os_helper.TESTFN_ASCII + "o"
-        self.addCleanup(os_helper.unlink, self.tmpin)
-        self.addCleanup(os_helper.unlink, self.tmpout)
-
-    def test_encode(self):
-        with open(self.tmpin, 'wb') as fin:
-            fin.write(plaintext)
-
-        with open(self.tmpin, 'rb') as fin:
-            with open(self.tmpout, 'wb') as fout:
-                uu.encode(fin, fout, self.tmpin, mode=0o644)
-
-        with open(self.tmpout, 'rb') as fout:
-            s = fout.read()
-        self.assertEqual(s, encodedtextwrapped(0o644, self.tmpin))
-
-        # in_file and out_file as filenames
-        uu.encode(self.tmpin, self.tmpout, self.tmpin, mode=0o644)
-        with open(self.tmpout, 'rb') as fout:
-            s = fout.read()
-        self.assertEqual(s, encodedtextwrapped(0o644, self.tmpin))
-
-    # decode() calls chmod()
-    @os_helper.skip_unless_working_chmod
-    def test_decode(self):
-        with open(self.tmpin, 'wb') as f:
-            f.write(encodedtextwrapped(0o644, self.tmpout))
-
-        with open(self.tmpin, 'rb') as f:
-            uu.decode(f)
-
-        with open(self.tmpout, 'rb') as f:
-            s = f.read()
-        self.assertEqual(s, plaintext)
-        # XXX is there an xp way to verify the mode?
-
-    @os_helper.skip_unless_working_chmod
-    def test_decode_filename(self):
-        with open(self.tmpin, 'wb') as f:
-            f.write(encodedtextwrapped(0o644, self.tmpout))
-
-        uu.decode(self.tmpin)
-
-        with open(self.tmpout, 'rb') as f:
-            s = f.read()
-        self.assertEqual(s, plaintext)
-
-    @os_helper.skip_unless_working_chmod
-    def test_decodetwice(self):
-        # Verify that decode() will refuse to overwrite an existing file
-        with open(self.tmpin, 'wb') as f:
-            f.write(encodedtextwrapped(0o644, self.tmpout))
-        with open(self.tmpin, 'rb') as f:
-            uu.decode(f)
-
-        with open(self.tmpin, 'rb') as f:
-            self.assertRaises(uu.Error, uu.decode, f)
-
-    @os_helper.skip_unless_working_chmod
-    def test_decode_mode(self):
-        # Verify that decode() will set the given mode for the out_file
-        expected_mode = 0o444
-        with open(self.tmpin, 'wb') as f:
-            f.write(encodedtextwrapped(expected_mode, self.tmpout))
-
-        # make file writable again, so it can be removed (Windows only)
-        self.addCleanup(os.chmod, self.tmpout, expected_mode | stat.S_IWRITE)
-
-        with open(self.tmpin, 'rb') as f:
-            uu.decode(f)
-
-        self.assertEqual(
-            stat.S_IMODE(os.stat(self.tmpout).st_mode),
-            expected_mode
-        )
-
-
-if __name__=="__main__":
-    unittest.main()
diff --git a/Lib/test/test_uuid.py b/Lib/test/test_uuid.py
index a178e942ecda0f..9cec1e87fd3c2d 100755
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -706,20 +706,23 @@ def test_uuid_weakref(self):
         self.assertIs(strong, weak())
 
     @mock.patch.object(sys, "argv", ["", "-u", "uuid3", "-n", "@dns"])
-    def test_cli_namespace_required_for_uuid3(self):
+    @mock.patch('sys.stderr', new_callable=io.StringIO)
+    def test_cli_namespace_required_for_uuid3(self, mock_err):
         with self.assertRaises(SystemExit) as cm:
             self.uuid.main()
 
         # Check that exception code is the same as argparse.ArgumentParser.error
         self.assertEqual(cm.exception.code, 2)
+        self.assertIn("error: Incorrect number of arguments", mock_err.getvalue())
 
     @mock.patch.object(sys, "argv", ["", "-u", "uuid3", "-N", "python.org"])
-    def test_cli_name_required_for_uuid3(self):
+    @mock.patch('sys.stderr', new_callable=io.StringIO)
+    def test_cli_name_required_for_uuid3(self, mock_err):
         with self.assertRaises(SystemExit) as cm:
             self.uuid.main()
-
         # Check that exception code is the same as argparse.ArgumentParser.error
         self.assertEqual(cm.exception.code, 2)
+        self.assertIn("error: Incorrect number of arguments", mock_err.getvalue())
 
     @mock.patch.object(sys, "argv", [""])
     def test_cli_uuid4_outputted_with_no_args(self):
diff --git a/Lib/test/test_venv.py b/Lib/test/test_venv.py
index 95944c7c711620..890672c5d27eec 100644
--- a/Lib/test/test_venv.py
+++ b/Lib/test/test_venv.py
@@ -20,7 +20,8 @@
 from test.support import (captured_stdout, captured_stderr,
                           skip_if_broken_multiprocessing_synchronize, verbose,
                           requires_subprocess, is_emscripten, is_wasi,
-                          requires_venv_with_pip, TEST_HOME_DIR)
+                          requires_venv_with_pip, TEST_HOME_DIR,
+                          requires_resource, copy_python_src_ignore)
 from test.support.os_helper import (can_symlink, EnvironmentVarGuard, rmtree)
 import unittest
 import venv
@@ -81,6 +82,13 @@ def setUp(self):
     def tearDown(self):
         rmtree(self.env_dir)
 
+    def envpy(self, *, real_env_dir=False):
+        if real_env_dir:
+            env_dir = os.path.realpath(self.env_dir)
+        else:
+            env_dir = self.env_dir
+        return os.path.join(env_dir, self.bindir, self.exe)
+
     def run_with_capture(self, func, *args, **kwargs):
         with captured_stdout() as output:
             with captured_stderr() as error:
@@ -137,7 +145,8 @@ def _check_output_of_default_create(self):
         self.assertIn('executable = %s' %
                       os.path.realpath(sys.executable), data)
         copies = '' if os.name=='nt' else ' --copies'
-        cmd = f'command = {sys.executable} -m venv{copies} --without-pip {self.env_dir}'
+        cmd = (f'command = {sys.executable} -m venv{copies} --without-pip '
+               f'--without-scm-ignore-files {self.env_dir}')
         self.assertIn(cmd, data)
         fn = self.get_env_file(self.bindir, self.exe)
         if not os.path.exists(fn):  # diagnostics for Windows buildbot failures
@@ -147,35 +156,37 @@ def _check_output_of_default_create(self):
         self.assertTrue(os.path.exists(fn), 'File %r should exist.' % fn)
 
     def test_config_file_command_key(self):
-        attrs = [
-            (None, None),
-            ('symlinks', '--copies'),
-            ('with_pip', '--without-pip'),
-            ('system_site_packages', '--system-site-packages'),
-            ('clear', '--clear'),
-            ('upgrade', '--upgrade'),
-            ('upgrade_deps', '--upgrade-deps'),
-            ('prompt', '--prompt'),
+        options = [
+            (None, None, None),  # Default case.
+            ('--copies', 'symlinks', False),
+            ('--without-pip', 'with_pip', False),
+            ('--system-site-packages', 'system_site_packages', True),
+            ('--clear', 'clear', True),
+            ('--upgrade', 'upgrade', True),
+            ('--upgrade-deps', 'upgrade_deps', True),
+            ('--prompt', 'prompt', True),
+            ('--without-scm-ignore-files', 'scm_ignore_files', frozenset()),
         ]
-        for attr, opt in attrs:
-            rmtree(self.env_dir)
-            if not attr:
-                b = venv.EnvBuilder()
-            else:
-                b = venv.EnvBuilder(
-                    **{attr: False if attr in ('with_pip', 'symlinks') else True})
-            b.upgrade_dependencies = Mock() # avoid pip command to upgrade deps
-            b._setup_pip = Mock() # avoid pip setup
-            self.run_with_capture(b.create, self.env_dir)
-            data = self.get_text_file_contents('pyvenv.cfg')
-            if not attr:
-                for opt in ('--system-site-packages', '--clear', '--upgrade',
-                        '--upgrade-deps', '--prompt'):
-                    self.assertNotRegex(data, rf'command = .* {opt}')
-            elif os.name=='nt' and attr=='symlinks':
-                pass
-            else:
-                self.assertRegex(data, rf'command = .* {opt}')
+        for opt, attr, value in options:
+            with self.subTest(opt=opt, attr=attr, value=value):
+                rmtree(self.env_dir)
+                if not attr:
+                    kwargs = {}
+                else:
+                    kwargs = {attr: value}
+                b = venv.EnvBuilder(**kwargs)
+                b.upgrade_dependencies = Mock() # avoid pip command to upgrade deps
+                b._setup_pip = Mock() # avoid pip setup
+                self.run_with_capture(b.create, self.env_dir)
+                data = self.get_text_file_contents('pyvenv.cfg')
+                if not attr or opt.endswith('git'):
+                    for opt in ('--system-site-packages', '--clear', '--upgrade',
+                                '--upgrade-deps', '--prompt'):
+                        self.assertNotRegex(data, rf'command = .* {opt}')
+                elif os.name=='nt' and attr=='symlinks':
+                    pass
+                else:
+                    self.assertRegex(data, rf'command = .* {opt}')
 
     def test_prompt(self):
         env_name = os.path.split(self.env_dir)[1]
@@ -242,8 +253,7 @@ def test_prefixes(self):
         # check a venv's prefixes
         rmtree(self.env_dir)
         self.run_with_capture(venv.create, self.env_dir)
-        envpy = os.path.join(self.env_dir, self.bindir, self.exe)
-        cmd = [envpy, '-c', None]
+        cmd = [self.envpy(), '-c', None]
         for prefix, expected in (
             ('prefix', self.env_dir),
             ('exec_prefix', self.env_dir),
@@ -260,8 +270,7 @@ def test_sysconfig(self):
         """
         rmtree(self.env_dir)
         self.run_with_capture(venv.create, self.env_dir, symlinks=False)
-        envpy = os.path.join(self.env_dir, self.bindir, self.exe)
-        cmd = [envpy, '-c', None]
+        cmd = [self.envpy(), '-c', None]
         for call, expected in (
             # installation scheme
             ('get_preferred_scheme("prefix")', 'venv'),
@@ -283,8 +292,7 @@ def test_sysconfig_symlinks(self):
         """
         rmtree(self.env_dir)
         self.run_with_capture(venv.create, self.env_dir, symlinks=True)
-        envpy = os.path.join(self.env_dir, self.bindir, self.exe)
-        cmd = [envpy, '-c', None]
+        cmd = [self.envpy(), '-c', None]
         for call, expected in (
             # installation scheme
             ('get_preferred_scheme("prefix")', 'venv'),
@@ -423,8 +431,7 @@ def test_executable(self):
         """
         rmtree(self.env_dir)
         self.run_with_capture(venv.create, self.env_dir)
-        envpy = os.path.join(os.path.realpath(self.env_dir),
-                             self.bindir, self.exe)
+        envpy = self.envpy(real_env_dir=True)
         out, err = check_output([envpy, '-c',
             'import sys; print(sys.executable)'])
         self.assertEqual(out.strip(), envpy.encode())
@@ -437,8 +444,7 @@ def test_executable_symlinks(self):
         rmtree(self.env_dir)
         builder = venv.EnvBuilder(clear=True, symlinks=True)
         builder.create(self.env_dir)
-        envpy = os.path.join(os.path.realpath(self.env_dir),
-                             self.bindir, self.exe)
+        envpy = self.envpy(real_env_dir=True)
         out, err = check_output([envpy, '-c',
             'import sys; print(sys.executable)'])
         self.assertEqual(out.strip(), envpy.encode())
@@ -453,7 +459,6 @@ def test_unicode_in_batch_file(self):
         builder = venv.EnvBuilder(clear=True)
         builder.create(env_dir)
         activate = os.path.join(env_dir, self.bindir, 'activate.bat')
-        envpy = os.path.join(env_dir, self.bindir, self.exe)
         out, err = check_output(
             [activate, '&', self.exe, '-c', 'print(0)'],
             encoding='oem',
@@ -472,9 +477,7 @@ def test_multiprocessing(self):
 
         rmtree(self.env_dir)
         self.run_with_capture(venv.create, self.env_dir)
-        envpy = os.path.join(os.path.realpath(self.env_dir),
-                             self.bindir, self.exe)
-        out, err = check_output([envpy, '-c',
+        out, err = check_output([self.envpy(real_env_dir=True), '-c',
             'from multiprocessing import Pool; '
             'pool = Pool(1); '
             'print(pool.apply_async("Python".lower).get(3)); '
@@ -490,10 +493,8 @@ def test_multiprocessing_recursion(self):
 
         rmtree(self.env_dir)
         self.run_with_capture(venv.create, self.env_dir)
-        envpy = os.path.join(os.path.realpath(self.env_dir),
-                             self.bindir, self.exe)
         script = os.path.join(TEST_HOME_DIR, '_test_venv_multiprocessing.py')
-        subprocess.check_call([envpy, script])
+        subprocess.check_call([self.envpy(real_env_dir=True), script])
 
     @unittest.skipIf(os.name == 'nt', 'not relevant on Windows')
     def test_deactivate_with_strict_bash_opts(self):
@@ -520,9 +521,7 @@ def test_macos_env(self):
         builder = venv.EnvBuilder()
         builder.create(self.env_dir)
 
-        envpy = os.path.join(os.path.realpath(self.env_dir),
-                             self.bindir, self.exe)
-        out, err = check_output([envpy, '-c',
+        out, err = check_output([self.envpy(real_env_dir=True), '-c',
             'import os; print("__PYVENV_LAUNCHER__" in os.environ)'])
         self.assertEqual(out.strip(), 'False'.encode())
 
@@ -560,6 +559,7 @@ def test_zippath_from_non_installed_posix(self):
                                     platlibdir,
                                     stdlib_zip)
         additional_pythonpath_for_non_installed = []
+
         # Copy stdlib files to the non-installed python so venv can
         # correctly calculate the prefix.
         for eachpath in sys.path:
@@ -569,14 +569,19 @@ def test_zippath_from_non_installed_posix(self):
                         eachpath,
                         os.path.join(non_installed_dir, platlibdir))
             elif os.path.isfile(os.path.join(eachpath, "os.py")):
-                for name in os.listdir(eachpath):
+                names = os.listdir(eachpath)
+                ignored_names = copy_python_src_ignore(eachpath, names)
+                for name in names:
+                    if name in ignored_names:
+                        continue
                     if name == "site-packages":
                         continue
                     fn = os.path.join(eachpath, name)
                     if os.path.isfile(fn):
                         shutil.copy(fn, libdir)
                     elif os.path.isdir(fn):
-                        shutil.copytree(fn, os.path.join(libdir, name))
+                        shutil.copytree(fn, os.path.join(libdir, name),
+                                        ignore=copy_python_src_ignore)
             else:
                 additional_pythonpath_for_non_installed.append(
                     eachpath)
@@ -584,6 +589,7 @@ def test_zippath_from_non_installed_posix(self):
                "-m",
                "venv",
                "--without-pip",
+               "--without-scm-ignore-files",
                self.env_dir]
         # Our fake non-installed python is not fully functional because
         # it cannot find the extensions. Set PYTHONPATH so it can run the
@@ -600,22 +606,21 @@ def test_zippath_from_non_installed_posix(self):
             ld_library_path_env = "DYLD_LIBRARY_PATH"
         else:
             ld_library_path_env = "LD_LIBRARY_PATH"
-        # Note that in address sanitizer mode, the current runtime
-        # implementation leaks memory due to not being able to correctly
-        # clean all unicode objects during runtime shutdown. Therefore,
-        # this uses subprocess.run instead of subprocess.check_call to
-        # maintain the core of the test while not failing due to the refleaks.
-        # This should be able to use check_call once all refleaks are fixed.
-        subprocess.run(cmd,
-                       env={"PYTHONPATH": pythonpath,
-                            ld_library_path_env: ld_library_path})
-        envpy = os.path.join(self.env_dir, self.bindir, self.exe)
+        child_env = {
+                "PYTHONPATH": pythonpath,
+                ld_library_path_env: ld_library_path,
+        }
+        if asan_options := os.environ.get("ASAN_OPTIONS"):
+            # prevent https://github.com/python/cpython/issues/104839
+            child_env["ASAN_OPTIONS"] = asan_options
+        subprocess.check_call(cmd, env=child_env)
         # Now check the venv created from the non-installed python has
         # correct zip path in pythonpath.
-        cmd = [envpy, '-S', '-c', 'import sys; print(sys.path)']
+        cmd = [self.envpy(), '-S', '-c', 'import sys; print(sys.path)']
         out, err = check_output(cmd)
         self.assertTrue(zip_landmark.encode() in out)
 
+    @requireVenvCreate
     def test_activate_shell_script_has_no_dos_newlines(self):
         """
         Test that the `activate` shell script contains no CR LF.
@@ -632,13 +637,80 @@ def test_activate_shell_script_has_no_dos_newlines(self):
                 error_message = f"CR LF found in line {i}"
                 self.assertFalse(line.endswith(b'\r\n'), error_message)
 
+    @requireVenvCreate
+    def test_scm_ignore_files_git(self):
+        """
+        Test that a .gitignore file is created when "git" is specified.
+        The file should contain a `*\n` line.
+        """
+        self.run_with_capture(venv.create, self.env_dir,
+                              scm_ignore_files={'git'})
+        file_lines = self.get_text_file_contents('.gitignore').splitlines()
+        self.assertIn('*', file_lines)
+
+    @requireVenvCreate
+    def test_create_scm_ignore_files_multiple(self):
+        """
+        Test that ``scm_ignore_files`` can work with multiple SCMs.
+        """
+        bzrignore_name = ".bzrignore"
+        contents = "# For Bazaar.\n*\n"
+
+        class BzrEnvBuilder(venv.EnvBuilder):
+            def create_bzr_ignore_file(self, context):
+                gitignore_path = os.path.join(context.env_dir, bzrignore_name)
+                with open(gitignore_path, 'w', encoding='utf-8') as file:
+                    file.write(contents)
+
+        builder = BzrEnvBuilder(scm_ignore_files={'git', 'bzr'})
+        self.run_with_capture(builder.create, self.env_dir)
+
+        gitignore_lines = self.get_text_file_contents('.gitignore').splitlines()
+        self.assertIn('*', gitignore_lines)
+
+        bzrignore = self.get_text_file_contents(bzrignore_name)
+        self.assertEqual(bzrignore, contents)
+
+    @requireVenvCreate
+    def test_create_scm_ignore_files_empty(self):
+        """
+        Test that no default ignore files are created when ``scm_ignore_files``
+        is empty.
+        """
+        # scm_ignore_files is set to frozenset() by default.
+        self.run_with_capture(venv.create, self.env_dir)
+        with self.assertRaises(FileNotFoundError):
+            self.get_text_file_contents('.gitignore')
+
+        self.assertIn("--without-scm-ignore-files",
+                      self.get_text_file_contents('pyvenv.cfg'))
+
+    @requireVenvCreate
+    def test_cli_with_scm_ignore_files(self):
+        """
+        Test that default SCM ignore files are created by default via the CLI.
+        """
+        self.run_with_capture(venv.main, ['--without-pip', self.env_dir])
+
+        gitignore_lines = self.get_text_file_contents('.gitignore').splitlines()
+        self.assertIn('*', gitignore_lines)
+
+    @requireVenvCreate
+    def test_cli_without_scm_ignore_files(self):
+        """
+        Test that ``--without-scm-ignore-files`` doesn't create SCM ignore files.
+        """
+        args = ['--without-pip', '--without-scm-ignore-files', self.env_dir]
+        self.run_with_capture(venv.main, args)
+
+        with self.assertRaises(FileNotFoundError):
+            self.get_text_file_contents('.gitignore')
+
 @requireVenvCreate
 class EnsurePipTest(BaseTest):
     """Test venv module installation of pip."""
     def assert_pip_not_installed(self):
-        envpy = os.path.join(os.path.realpath(self.env_dir),
-                             self.bindir, self.exe)
-        out, err = check_output([envpy, '-c',
+        out, err = check_output([self.envpy(real_env_dir=True), '-c',
             'try:\n import pip\nexcept ImportError:\n print("OK")'])
         # We force everything to text, so unittest gives the detailed diff
         # if we get unexpected results
@@ -705,9 +777,9 @@ def do_test_with_pip(self, system_site_packages):
                                           system_site_packages=system_site_packages,
                                           with_pip=True)
         # Ensure pip is available in the virtual environment
-        envpy = os.path.join(os.path.realpath(self.env_dir), self.bindir, self.exe)
         # Ignore DeprecationWarning since pip code is not part of Python
-        out, err = check_output([envpy, '-W', 'ignore::DeprecationWarning',
+        out, err = check_output([self.envpy(real_env_dir=True),
+               '-W', 'ignore::DeprecationWarning',
                '-W', 'ignore::ImportWarning', '-I',
                '-m', 'pip', '--version'])
         # We force everything to text, so unittest gives the detailed diff
@@ -728,7 +800,7 @@ def do_test_with_pip(self, system_site_packages):
                 # It seems ensurepip._uninstall calls subprocesses which do not
                 # inherit the interpreter settings.
                 envvars["PYTHONWARNINGS"] = "ignore"
-                out, err = check_output([envpy,
+                out, err = check_output([self.envpy(real_env_dir=True),
                     '-W', 'ignore::DeprecationWarning',
                     '-W', 'ignore::ImportWarning', '-I',
                     '-m', 'ensurepip._uninstall'])
@@ -776,6 +848,7 @@ def nicer_error(self):
             )
 
     @requires_venv_with_pip()
+    @requires_resource('cpu')
     def test_with_pip(self):
         self.do_test_with_pip(False)
         self.do_test_with_pip(True)
diff --git a/Lib/test/test_warnings/__init__.py b/Lib/test/test_warnings/__init__.py
index 9e680c847dab7b..50b0f3fff04c57 100644
--- a/Lib/test/test_warnings/__init__.py
+++ b/Lib/test/test_warnings/__init__.py
@@ -5,6 +5,8 @@
 import re
 import sys
 import textwrap
+import types
+from typing import overload, get_overloads
 import unittest
 from test import support
 from test.support import import_helper
@@ -16,6 +18,7 @@
 from test.test_warnings.data import stacklevel as warning_tests
 
 import warnings as original_warnings
+from warnings import deprecated
 
 
 py_warnings = import_helper.import_fresh_module('warnings',
@@ -90,7 +93,7 @@ def test_module_all_attribute(self):
         self.assertTrue(hasattr(self.module, '__all__'))
         target_api = ["warn", "warn_explicit", "showwarning",
                       "formatwarning", "filterwarnings", "simplefilter",
-                      "resetwarnings", "catch_warnings"]
+                      "resetwarnings", "catch_warnings", "deprecated"]
         self.assertSetEqual(set(self.module.__all__),
                             set(target_api))
 
@@ -372,6 +375,28 @@ def test_append_duplicate(self):
                 "appended duplicate changed order of filters"
             )
 
+    def test_argument_validation(self):
+        with self.assertRaises(ValueError):
+            self.module.filterwarnings(action='foo')
+        with self.assertRaises(TypeError):
+            self.module.filterwarnings('ignore', message=0)
+        with self.assertRaises(TypeError):
+            self.module.filterwarnings('ignore', category=0)
+        with self.assertRaises(TypeError):
+            self.module.filterwarnings('ignore', category=int)
+        with self.assertRaises(TypeError):
+            self.module.filterwarnings('ignore', module=0)
+        with self.assertRaises(TypeError):
+            self.module.filterwarnings('ignore', lineno=int)
+        with self.assertRaises(ValueError):
+            self.module.filterwarnings('ignore', lineno=-1)
+        with self.assertRaises(ValueError):
+            self.module.simplefilter(action='foo')
+        with self.assertRaises(TypeError):
+            self.module.simplefilter('ignore', lineno=int)
+        with self.assertRaises(ValueError):
+            self.module.simplefilter('ignore', lineno=-1)
+
     def test_catchwarnings_with_simplefilter_ignore(self):
         with original_warnings.catch_warnings(module=self.module):
             self.module.resetwarnings()
@@ -387,9 +412,13 @@ def test_catchwarnings_with_simplefilter_error(self):
             with self.module.catch_warnings(
                 module=self.module, action="error", category=FutureWarning
             ):
-                self.module.warn("Other types of warnings are not errors")
-                self.assertRaises(FutureWarning,
-                                  self.module.warn, FutureWarning("msg"))
+                with support.captured_stderr() as stderr:
+                    error_msg = "Other types of warnings are not errors"
+                    self.module.warn(error_msg)
+                    self.assertRaises(FutureWarning,
+                                      self.module.warn, FutureWarning("msg"))
+                    stderr = stderr.getvalue()
+                    self.assertIn(error_msg, stderr)
 
 class CFilterTests(FilterTests, unittest.TestCase):
     module = c_warnings
@@ -1229,6 +1258,10 @@ def test_conflicting_envvar_and_command_line(self):
         self.assertEqual(stderr.splitlines(),
             [b"Traceback (most recent call last):",
              b"  File \"<string>\", line 1, in <module>",
+             b'    import sys, warnings; sys.stdout.write(str(sys.warnoptions)); warnings.w'
+             b"arn('Message', DeprecationWarning)",
+             b'                                                                  ~~~~~~~~~~'
+             b'~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^',
              b"DeprecationWarning: Message"])
 
     def test_default_filter_configuration(self):
@@ -1369,6 +1402,283 @@ def test_late_resource_warning(self):
         self.assertTrue(err.startswith(expected), ascii(err))
 
 
+class DeprecatedTests(unittest.TestCase):
+    def test_dunder_deprecated(self):
+        @deprecated("A will go away soon")
+        class A:
+            pass
+
+        self.assertEqual(A.__deprecated__, "A will go away soon")
+        self.assertIsInstance(A, type)
+
+        @deprecated("b will go away soon")
+        def b():
+            pass
+
+        self.assertEqual(b.__deprecated__, "b will go away soon")
+        self.assertIsInstance(b, types.FunctionType)
+
+        @overload
+        @deprecated("no more ints")
+        def h(x: int) -> int: ...
+        @overload
+        def h(x: str) -> str: ...
+        def h(x):
+            return x
+
+        overloads = get_overloads(h)
+        self.assertEqual(len(overloads), 2)
+        self.assertEqual(overloads[0].__deprecated__, "no more ints")
+
+    def test_class(self):
+        @deprecated("A will go away soon")
+        class A:
+            pass
+
+        with self.assertWarnsRegex(DeprecationWarning, "A will go away soon"):
+            A()
+        with self.assertWarnsRegex(DeprecationWarning, "A will go away soon"):
+            with self.assertRaises(TypeError):
+                A(42)
+
+    def test_class_with_init(self):
+        @deprecated("HasInit will go away soon")
+        class HasInit:
+            def __init__(self, x):
+                self.x = x
+
+        with self.assertWarnsRegex(DeprecationWarning, "HasInit will go away soon"):
+            instance = HasInit(42)
+        self.assertEqual(instance.x, 42)
+
+    def test_class_with_new(self):
+        has_new_called = False
+
+        @deprecated("HasNew will go away soon")
+        class HasNew:
+            def __new__(cls, x):
+                nonlocal has_new_called
+                has_new_called = True
+                return super().__new__(cls)
+
+            def __init__(self, x) -> None:
+                self.x = x
+
+        with self.assertWarnsRegex(DeprecationWarning, "HasNew will go away soon"):
+            instance = HasNew(42)
+        self.assertEqual(instance.x, 42)
+        self.assertTrue(has_new_called)
+
+    def test_class_with_inherited_new(self):
+        new_base_called = False
+
+        class NewBase:
+            def __new__(cls, x):
+                nonlocal new_base_called
+                new_base_called = True
+                return super().__new__(cls)
+
+            def __init__(self, x) -> None:
+                self.x = x
+
+        @deprecated("HasInheritedNew will go away soon")
+        class HasInheritedNew(NewBase):
+            pass
+
+        with self.assertWarnsRegex(DeprecationWarning, "HasInheritedNew will go away soon"):
+            instance = HasInheritedNew(42)
+        self.assertEqual(instance.x, 42)
+        self.assertTrue(new_base_called)
+
+    def test_class_with_new_but_no_init(self):
+        new_called = False
+
+        @deprecated("HasNewNoInit will go away soon")
+        class HasNewNoInit:
+            def __new__(cls, x):
+                nonlocal new_called
+                new_called = True
+                obj = super().__new__(cls)
+                obj.x = x
+                return obj
+
+        with self.assertWarnsRegex(DeprecationWarning, "HasNewNoInit will go away soon"):
+            instance = HasNewNoInit(42)
+        self.assertEqual(instance.x, 42)
+        self.assertTrue(new_called)
+
+    def test_mixin_class(self):
+        @deprecated("Mixin will go away soon")
+        class Mixin:
+            pass
+
+        class Base:
+            def __init__(self, a) -> None:
+                self.a = a
+
+        with self.assertWarnsRegex(DeprecationWarning, "Mixin will go away soon"):
+            class Child(Base, Mixin):
+                pass
+
+        instance = Child(42)
+        self.assertEqual(instance.a, 42)
+
+    def test_existing_init_subclass(self):
+        @deprecated("C will go away soon")
+        class C:
+            def __init_subclass__(cls) -> None:
+                cls.inited = True
+
+        with self.assertWarnsRegex(DeprecationWarning, "C will go away soon"):
+            C()
+
+        with self.assertWarnsRegex(DeprecationWarning, "C will go away soon"):
+            class D(C):
+                pass
+
+        self.assertTrue(D.inited)
+        self.assertIsInstance(D(), D)  # no deprecation
+
+    def test_existing_init_subclass_in_base(self):
+        class Base:
+            def __init_subclass__(cls, x) -> None:
+                cls.inited = x
+
+        @deprecated("C will go away soon")
+        class C(Base, x=42):
+            pass
+
+        self.assertEqual(C.inited, 42)
+
+        with self.assertWarnsRegex(DeprecationWarning, "C will go away soon"):
+            C()
+
+        with self.assertWarnsRegex(DeprecationWarning, "C will go away soon"):
+            class D(C, x=3):
+                pass
+
+        self.assertEqual(D.inited, 3)
+
+    def test_init_subclass_has_correct_cls(self):
+        init_subclass_saw = None
+
+        @deprecated("Base will go away soon")
+        class Base:
+            def __init_subclass__(cls) -> None:
+                nonlocal init_subclass_saw
+                init_subclass_saw = cls
+
+        self.assertIsNone(init_subclass_saw)
+
+        with self.assertWarnsRegex(DeprecationWarning, "Base will go away soon"):
+            class C(Base):
+                pass
+
+        self.assertIs(init_subclass_saw, C)
+
+    def test_init_subclass_with_explicit_classmethod(self):
+        init_subclass_saw = None
+
+        @deprecated("Base will go away soon")
+        class Base:
+            @classmethod
+            def __init_subclass__(cls) -> None:
+                nonlocal init_subclass_saw
+                init_subclass_saw = cls
+
+        self.assertIsNone(init_subclass_saw)
+
+        with self.assertWarnsRegex(DeprecationWarning, "Base will go away soon"):
+            class C(Base):
+                pass
+
+        self.assertIs(init_subclass_saw, C)
+
+    def test_function(self):
+        @deprecated("b will go away soon")
+        def b():
+            pass
+
+        with self.assertWarnsRegex(DeprecationWarning, "b will go away soon"):
+            b()
+
+    def test_method(self):
+        class Capybara:
+            @deprecated("x will go away soon")
+            def x(self):
+                pass
+
+        instance = Capybara()
+        with self.assertWarnsRegex(DeprecationWarning, "x will go away soon"):
+            instance.x()
+
+    def test_property(self):
+        class Capybara:
+            @property
+            @deprecated("x will go away soon")
+            def x(self):
+                pass
+
+            @property
+            def no_more_setting(self):
+                return 42
+
+            @no_more_setting.setter
+            @deprecated("no more setting")
+            def no_more_setting(self, value):
+                pass
+
+        instance = Capybara()
+        with self.assertWarnsRegex(DeprecationWarning, "x will go away soon"):
+            instance.x
+
+        with py_warnings.catch_warnings():
+            py_warnings.simplefilter("error")
+            self.assertEqual(instance.no_more_setting, 42)
+
+        with self.assertWarnsRegex(DeprecationWarning, "no more setting"):
+            instance.no_more_setting = 42
+
+    def test_category(self):
+        @deprecated("c will go away soon", category=RuntimeWarning)
+        def c():
+            pass
+
+        with self.assertWarnsRegex(RuntimeWarning, "c will go away soon"):
+            c()
+
+    def test_turn_off_warnings(self):
+        @deprecated("d will go away soon", category=None)
+        def d():
+            pass
+
+        with py_warnings.catch_warnings():
+            py_warnings.simplefilter("error")
+            d()
+
+    def test_only_strings_allowed(self):
+        with self.assertRaisesRegex(
+            TypeError,
+            "Expected an object of type str for 'message', not 'type'"
+        ):
+            @deprecated
+            class Foo: ...
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "Expected an object of type str for 'message', not 'function'"
+        ):
+            @deprecated
+            def foo(): ...
+
+    def test_no_retained_references_to_wrapper_instance(self):
+        @deprecated('depr')
+        def d(): pass
+
+        self.assertFalse(any(
+            isinstance(cell.cell_contents, deprecated) for cell in d.__closure__
+        ))
+
 def setUpModule():
     py_warnings.onceregistry.clear()
     c_warnings.onceregistry.clear()
diff --git a/Lib/test/test_wave.py b/Lib/test/test_wave.py
index 6c3362857fc2ba..5e771c8de969ec 100644
--- a/Lib/test/test_wave.py
+++ b/Lib/test/test_wave.py
@@ -136,6 +136,32 @@ def test__all__(self):
         not_exported = {'WAVE_FORMAT_PCM', 'WAVE_FORMAT_EXTENSIBLE', 'KSDATAFORMAT_SUBTYPE_PCM'}
         support.check__all__(self, wave, not_exported=not_exported)
 
+    def test_read_deprecations(self):
+        filename = support.findfile('pluck-pcm8.wav', subdir='audiodata')
+        with wave.open(filename) as reader:
+            with self.assertWarns(DeprecationWarning):
+                with self.assertRaises(wave.Error):
+                    reader.getmark('mark')
+            with self.assertWarns(DeprecationWarning):
+                self.assertIsNone(reader.getmarkers())
+
+    def test_write_deprecations(self):
+        with io.BytesIO(b'') as tmpfile:
+            with wave.open(tmpfile, 'wb') as writer:
+                writer.setnchannels(1)
+                writer.setsampwidth(1)
+                writer.setframerate(1)
+                writer.setcomptype('NONE', 'not compressed')
+
+                with self.assertWarns(DeprecationWarning):
+                    with self.assertRaises(wave.Error):
+                        writer.setmark(0, 0, 'mark')
+                with self.assertWarns(DeprecationWarning):
+                    with self.assertRaises(wave.Error):
+                        writer.getmark('mark')
+                with self.assertWarns(DeprecationWarning):
+                    self.assertIsNone(writer.getmarkers())
+
 
 class WaveLowLevelTest(unittest.TestCase):
 
diff --git a/Lib/test/test_weakref.py b/Lib/test/test_weakref.py
index 1bc1d05f7daba9..4cdd66d3769e0c 100644
--- a/Lib/test/test_weakref.py
+++ b/Lib/test/test_weakref.py
@@ -1933,6 +1933,7 @@ def test_threaded_weak_key_dict_copy(self):
         self.check_threaded_weak_dict_copy(weakref.WeakKeyDictionary, False)
 
     @threading_helper.requires_working_threading()
+    @support.requires_resource('cpu')
     def test_threaded_weak_key_dict_deepcopy(self):
         # Issue #35615: Weakref keys or values getting GC'ed during dict
         # copying should not result in a crash.
@@ -1945,6 +1946,7 @@ def test_threaded_weak_value_dict_copy(self):
         self.check_threaded_weak_dict_copy(weakref.WeakValueDictionary, False)
 
     @threading_helper.requires_working_threading()
+    @support.requires_resource('cpu')
     def test_threaded_weak_value_dict_deepcopy(self):
         # Issue #35615: Weakref keys or values getting GC'ed during dict
         # copying should not result in a crash.
diff --git a/Lib/test/test_weakset.py b/Lib/test/test_weakset.py
index d6c88596cff71f..76e8e5c8ab7d3c 100644
--- a/Lib/test/test_weakset.py
+++ b/Lib/test/test_weakset.py
@@ -44,7 +44,7 @@ def setUp(self):
     def test_methods(self):
         weaksetmethods = dir(WeakSet)
         for method in dir(set):
-            if method == 'test_c_api' or method.startswith('_'):
+            if method.startswith('_'):
                 continue
             self.assertIn(method, weaksetmethods,
                          "WeakSet missing method " + method)
diff --git a/Lib/test/test_xdrlib.py b/Lib/test/test_xdrlib.py
deleted file mode 100644
index 226b70ae87b0b4..00000000000000
--- a/Lib/test/test_xdrlib.py
+++ /dev/null
@@ -1,79 +0,0 @@
-import unittest
-from test.support import warnings_helper
-
-xdrlib = warnings_helper.import_deprecated("xdrlib")
-
-
-class XDRTest(unittest.TestCase):
-
-    def test_xdr(self):
-        p = xdrlib.Packer()
-
-        s = b'hello world'
-        a = [b'what', b'is', b'hapnin', b'doctor']
-
-        p.pack_int(42)
-        p.pack_int(-17)
-        p.pack_uint(9)
-        p.pack_bool(True)
-        p.pack_bool(False)
-        p.pack_uhyper(45)
-        p.pack_float(1.9)
-        p.pack_double(1.9)
-        p.pack_string(s)
-        p.pack_list(range(5), p.pack_uint)
-        p.pack_array(a, p.pack_string)
-
-        # now verify
-        data = p.get_buffer()
-        up = xdrlib.Unpacker(data)
-
-        self.assertEqual(up.get_position(), 0)
-
-        self.assertEqual(up.unpack_int(), 42)
-        self.assertEqual(up.unpack_int(), -17)
-        self.assertEqual(up.unpack_uint(), 9)
-        self.assertTrue(up.unpack_bool() is True)
-
-        # remember position
-        pos = up.get_position()
-        self.assertTrue(up.unpack_bool() is False)
-
-        # rewind and unpack again
-        up.set_position(pos)
-        self.assertTrue(up.unpack_bool() is False)
-
-        self.assertEqual(up.unpack_uhyper(), 45)
-        self.assertAlmostEqual(up.unpack_float(), 1.9)
-        self.assertAlmostEqual(up.unpack_double(), 1.9)
-        self.assertEqual(up.unpack_string(), s)
-        self.assertEqual(up.unpack_list(up.unpack_uint), list(range(5)))
-        self.assertEqual(up.unpack_array(up.unpack_string), a)
-        up.done()
-        self.assertRaises(EOFError, up.unpack_uint)
-
-class ConversionErrorTest(unittest.TestCase):
-
-    def setUp(self):
-        self.packer = xdrlib.Packer()
-
-    def assertRaisesConversion(self, *args):
-        self.assertRaises(xdrlib.ConversionError, *args)
-
-    def test_pack_int(self):
-        self.assertRaisesConversion(self.packer.pack_int, 'string')
-
-    def test_pack_uint(self):
-        self.assertRaisesConversion(self.packer.pack_uint, 'string')
-
-    def test_float(self):
-        self.assertRaisesConversion(self.packer.pack_float, 'string')
-
-    def test_double(self):
-        self.assertRaisesConversion(self.packer.pack_double, 'string')
-
-    def test_uhyper(self):
-        self.assertRaisesConversion(self.packer.pack_uhyper, 'string')
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
index 11efee00582e01..b9e7937b0bbc00 100644
--- a/Lib/test/test_xml_etree.py
+++ b/Lib/test/test_xml_etree.py
@@ -328,7 +328,7 @@ def test_simpleops(self):
         self.serialize_check(element, '<tag key="value" />') # 5
         with self.assertRaises(ValueError) as cm:
             element.remove(subelement)
-        self.assertEqual(str(cm.exception), 'list.remove(x): x not in list')
+        self.assertIn('not in list', str(cm.exception))
         self.serialize_check(element, '<tag key="value" />') # 6
         element[0:0] = [subelement, subelement, subelement]
         self.serialize_check(element[1], '<subtag />')
@@ -365,6 +365,7 @@ def test_path_cache(self):
         from xml.etree import ElementPath
 
         elem = ET.XML(SAMPLE_XML)
+        ElementPath._cache.clear()
         for i in range(10): ET.ElementTree(elem).find('./'+str(i))
         cache_len_10 = len(ElementPath._cache)
         for i in range(10): ET.ElementTree(elem).find('./'+str(i))
@@ -2534,6 +2535,7 @@ def __eq__(self, o):
         e.extend([ET.Element('bar')])
         self.assertRaises(ValueError, e.remove, X('baz'))
 
+    @support.infinite_recursion(25)
     def test_recursive_repr(self):
         # Issue #25455
         e = ET.Element('foo')
@@ -3926,8 +3928,9 @@ def test_issue14818(self):
 # --------------------------------------------------------------------
 
 class NoAcceleratorTest(unittest.TestCase):
-    def setUp(self):
-        if not pyET:
+    @classmethod
+    def setUpClass(cls):
+        if ET is not pyET:
             raise unittest.SkipTest('only for the Python version')
 
     # Test that the C accelerator was not imported for pyET
@@ -4192,8 +4195,7 @@ def get_option(config, option_name, default=None):
 
 # --------------------------------------------------------------------
 
-
-def test_main(module=None):
+def setUpModule(module=None):
     # When invoked without a module, runs the Python ET tests by loading pyET.
     # Otherwise, uses the given module as the ET.
     global pyET
@@ -4205,63 +4207,30 @@ def test_main(module=None):
     global ET
     ET = module
 
-    test_classes = [
-        ModuleTest,
-        ElementSlicingTest,
-        BasicElementTest,
-        BadElementTest,
-        BadElementPathTest,
-        ElementTreeTest,
-        IOTest,
-        ParseErrorTest,
-        XIncludeTest,
-        ElementTreeTypeTest,
-        ElementFindTest,
-        ElementIterTest,
-        TreeBuilderTest,
-        XMLParserTest,
-        XMLPullParserTest,
-        BugsTest,
-        KeywordArgsTest,
-        BoolTest,
-        C14NTest,
-        ]
-
-    # These tests will only run for the pure-Python version that doesn't import
-    # _elementtree. We can't use skipUnless here, because pyET is filled in only
-    # after the module is loaded.
-    if pyET is not ET:
-        test_classes.extend([
-            NoAcceleratorTest,
-            ])
+    # don't interfere with subsequent tests
+    def cleanup():
+        global ET, pyET
+        ET = pyET = None
+    unittest.addModuleCleanup(cleanup)
 
     # Provide default namespace mapping and path cache.
     from xml.etree import ElementPath
     nsmap = ET.register_namespace._namespace_map
     # Copy the default namespace mapping
     nsmap_copy = nsmap.copy()
+    unittest.addModuleCleanup(nsmap.update, nsmap_copy)
+    unittest.addModuleCleanup(nsmap.clear)
+
     # Copy the path cache (should be empty)
     path_cache = ElementPath._cache
+    unittest.addModuleCleanup(setattr, ElementPath, "_cache", path_cache)
     ElementPath._cache = path_cache.copy()
+
     # Align the Comment/PI factories.
     if hasattr(ET, '_set_factories'):
         old_factories = ET._set_factories(ET.Comment, ET.PI)
-    else:
-        old_factories = None
-
-    try:
-        support.run_unittest(*test_classes)
-    finally:
-        from xml.etree import ElementPath
-        # Restore mapping and path cache
-        nsmap.clear()
-        nsmap.update(nsmap_copy)
-        ElementPath._cache = path_cache
-        if old_factories is not None:
-            ET._set_factories(*old_factories)
-        # don't interfere with subsequent tests
-        ET = pyET = None
+        unittest.addModuleCleanup(ET._set_factories, *old_factories)
 
 
 if __name__ == '__main__':
-    test_main()
+    unittest.main()
diff --git a/Lib/test/test_xml_etree_c.py b/Lib/test/test_xml_etree_c.py
index fd27b575ec8dc9..3a0fc572f457ff 100644
--- a/Lib/test/test_xml_etree_c.py
+++ b/Lib/test/test_xml_etree_c.py
@@ -254,20 +254,25 @@ def test_element_with_children(self):
         self.check_sizeof(e, self.elementsize + self.extra +
                              struct.calcsize('8P'))
 
-def test_main():
-    from test import test_xml_etree
-
-    # Run the tests specific to the C implementation
-    support.run_unittest(
-        MiscTests,
-        TestAliasWorking,
-        TestAcceleratorImported,
-        SizeofTest,
-        )
 
-    # Run the same test suite as the Python module
-    test_xml_etree.test_main(module=cET)
+def install_tests():
+    # Test classes should have __module__ referring to this module.
+    from test import test_xml_etree
+    for name, base in vars(test_xml_etree).items():
+        if isinstance(base, type) and issubclass(base, unittest.TestCase):
+            class Temp(base):
+                pass
+            Temp.__name__ = Temp.__qualname__ = name
+            Temp.__module__ = __name__
+            assert name not in globals()
+            globals()[name] = Temp
+
+install_tests()
+
+def setUpModule():
+    from test import test_xml_etree
+    test_xml_etree.setUpModule(module=cET)
 
 
 if __name__ == '__main__':
-    test_main()
+    unittest.main()
diff --git a/Lib/test/test_xmlrpc.py b/Lib/test/test_xmlrpc.py
index 9ff5545f786a32..6c4b8384a3202e 100644
--- a/Lib/test/test_xmlrpc.py
+++ b/Lib/test/test_xmlrpc.py
@@ -504,10 +504,16 @@ def test_time_struct(self):
         self.assertEqual(str(t), time.strftime("%Y%m%dT%H:%M:%S", d))
 
     def test_datetime_datetime(self):
+        # naive (no tzinfo)
         d = datetime.datetime(2007,1,2,3,4,5)
         t = xmlrpclib.DateTime(d)
         self.assertEqual(str(t), '20070102T03:04:05')
 
+        # aware (with tzinfo): the timezone is ignored
+        d = datetime.datetime(2023, 6, 12, 13, 30, tzinfo=datetime.UTC)
+        t = xmlrpclib.DateTime(d)
+        self.assertEqual(str(t), '20230612T13:30:00')
+
     def test_repr(self):
         d = datetime.datetime(2007,1,2,3,4,5)
         t = xmlrpclib.DateTime(d)
@@ -1031,38 +1037,47 @@ def test_path2(self):
         self.assertEqual(p.add(6,8), 6+8)
         self.assertRaises(xmlrpclib.Fault, p.pow, 6, 8)
 
+    @support.requires_resource('walltime')
     def test_path3(self):
         p = xmlrpclib.ServerProxy(URL+"/is/broken")
         self.assertRaises(xmlrpclib.Fault, p.add, 6, 8)
 
+    @support.requires_resource('walltime')
     def test_invalid_path(self):
         p = xmlrpclib.ServerProxy(URL+"/invalid")
         self.assertRaises(xmlrpclib.Fault, p.add, 6, 8)
 
+    @support.requires_resource('walltime')
     def test_path_query_fragment(self):
         p = xmlrpclib.ServerProxy(URL+"/foo?k=v#frag")
         self.assertEqual(p.test(), "/foo?k=v#frag")
 
+    @support.requires_resource('walltime')
     def test_path_fragment(self):
         p = xmlrpclib.ServerProxy(URL+"/foo#frag")
         self.assertEqual(p.test(), "/foo#frag")
 
+    @support.requires_resource('walltime')
     def test_path_query(self):
         p = xmlrpclib.ServerProxy(URL+"/foo?k=v")
         self.assertEqual(p.test(), "/foo?k=v")
 
+    @support.requires_resource('walltime')
     def test_empty_path(self):
         p = xmlrpclib.ServerProxy(URL)
         self.assertEqual(p.test(), "/RPC2")
 
+    @support.requires_resource('walltime')
     def test_root_path(self):
         p = xmlrpclib.ServerProxy(URL + "/")
         self.assertEqual(p.test(), "/")
 
+    @support.requires_resource('walltime')
     def test_empty_path_query(self):
         p = xmlrpclib.ServerProxy(URL + "?k=v")
         self.assertEqual(p.test(), "?k=v")
 
+    @support.requires_resource('walltime')
     def test_empty_path_fragment(self):
         p = xmlrpclib.ServerProxy(URL + "#frag")
         self.assertEqual(p.test(), "#frag")
diff --git a/Lib/test/test_xmlrpc_net.py b/Lib/test/test_xmlrpc_net.py
deleted file mode 100644
index 51167b28bc5a1e..00000000000000
--- a/Lib/test/test_xmlrpc_net.py
+++ /dev/null
@@ -1,31 +0,0 @@
-import collections.abc
-import unittest
-from test import support
-
-import xmlrpc.client as xmlrpclib
-
-
-support.requires("network")
-
-
-@unittest.skip('XXX: buildbot.python.org/all/xmlrpc/ is gone')
-class PythonBuildersTest(unittest.TestCase):
-
-    def test_python_builders(self):
-        # Get the list of builders from the XMLRPC buildbot interface at
-        # python.org.
-        server = xmlrpclib.ServerProxy("http://buildbot.python.org/all/xmlrpc/")
-        try:
-            builders = server.getAllBuilders()
-        except OSError as e:
-            self.skipTest("network error: %s" % e)
-        self.addCleanup(lambda: server('close')())
-
-        # Perform a minimal sanity check on the result, just to be sure
-        # the request means what we think it means.
-        self.assertIsInstance(builders, collections.abc.Sequence)
-        self.assertTrue([x for x in builders if "3.x" in x], builders)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/Lib/test/test_zipfile/_path/__init__.py b/Lib/test/test_zipfile/_path/__init__.py
new file mode 100644
index 00000000000000..e69de29bb2d1d6
diff --git a/Lib/test/test_zipfile/_functools.py b/Lib/test/test_zipfile/_path/_functools.py
similarity index 100%
rename from Lib/test/test_zipfile/_functools.py
rename to Lib/test/test_zipfile/_path/_functools.py
diff --git a/Lib/test/test_zipfile/_itertools.py b/Lib/test/test_zipfile/_path/_itertools.py
similarity index 100%
rename from Lib/test/test_zipfile/_itertools.py
rename to Lib/test/test_zipfile/_path/_itertools.py
diff --git a/Lib/test/test_zipfile/_support.py b/Lib/test/test_zipfile/_path/_support.py
similarity index 100%
rename from Lib/test/test_zipfile/_support.py
rename to Lib/test/test_zipfile/_path/_support.py
diff --git a/Lib/test/test_zipfile/_test_params.py b/Lib/test/test_zipfile/_path/_test_params.py
similarity index 100%
rename from Lib/test/test_zipfile/_test_params.py
rename to Lib/test/test_zipfile/_path/_test_params.py
diff --git a/Lib/test/test_zipfile/_path/test_complexity.py b/Lib/test/test_zipfile/_path/test_complexity.py
new file mode 100644
index 00000000000000..7050937738af18
--- /dev/null
+++ b/Lib/test/test_zipfile/_path/test_complexity.py
@@ -0,0 +1,103 @@
+import io
+import itertools
+import math
+import re
+import string
+import unittest
+import zipfile
+
+from ._functools import compose
+from ._itertools import consume
+
+from ._support import import_or_skip
+
+
+big_o = import_or_skip('big_o')
+pytest = import_or_skip('pytest')
+
+
+class TestComplexity(unittest.TestCase):
+    @pytest.mark.flaky
+    def test_implied_dirs_performance(self):
+        best, others = big_o.big_o(
+            compose(consume, zipfile.CompleteDirs._implied_dirs),
+            lambda size: [
+                '/'.join(string.ascii_lowercase + str(n)) for n in range(size)
+            ],
+            max_n=1000,
+            min_n=1,
+        )
+        assert best <= big_o.complexities.Linear
+
+    def make_zip_path(self, depth=1, width=1) -> zipfile.Path:
+        """
+        Construct a Path with width files at every level of depth.
+        """
+        zf = zipfile.ZipFile(io.BytesIO(), mode='w')
+        pairs = itertools.product(self.make_deep_paths(depth), self.make_names(width))
+        for path, name in pairs:
+            zf.writestr(f"{path}{name}.txt", b'')
+        zf.filename = "big un.zip"
+        return zipfile.Path(zf)
+
+    @classmethod
+    def make_names(cls, width, letters=string.ascii_lowercase):
+        """
+        >>> list(TestComplexity.make_names(2))
+        ['a', 'b']
+        >>> list(TestComplexity.make_names(30))
+        ['aa', 'ab', ..., 'bd']
+        """
+        # determine how many products are needed to produce width
+        n_products = math.ceil(math.log(width, len(letters)))
+        inputs = (letters,) * n_products
+        combinations = itertools.product(*inputs)
+        names = map(''.join, combinations)
+        return itertools.islice(names, width)
+
+    @classmethod
+    def make_deep_paths(cls, depth):
+        return map(cls.make_deep_path, range(depth))
+
+    @classmethod
+    def make_deep_path(cls, depth):
+        return ''.join(('d/',) * depth)
+
+    def test_baseline_regex_complexity(self):
+        best, others = big_o.big_o(
+            lambda path: re.fullmatch(r'[^/]*\\.txt', path),
+            self.make_deep_path,
+            max_n=100,
+            min_n=1,
+        )
+        assert best <= big_o.complexities.Constant
+
+    @pytest.mark.flaky
+    def test_glob_depth(self):
+        best, others = big_o.big_o(
+            lambda path: consume(path.glob('*.txt')),
+            self.make_zip_path,
+            max_n=100,
+            min_n=1,
+        )
+        assert best <= big_o.complexities.Quadratic
+
+    @pytest.mark.flaky
+    def test_glob_width(self):
+        best, others = big_o.big_o(
+            lambda path: consume(path.glob('*.txt')),
+            lambda size: self.make_zip_path(width=size),
+            max_n=100,
+            min_n=1,
+        )
+        assert best <= big_o.complexities.Linear
+
+    @pytest.mark.flaky
+    def test_glob_width_and_depth(self):
+        best, others = big_o.big_o(
+            lambda path: consume(path.glob('*.txt')),
+            lambda size: self.make_zip_path(depth=size, width=size),
+            max_n=10,
+            min_n=1,
+        )
+        assert best <= big_o.complexities.Linear
diff --git a/Lib/test/test_zipfile/test_path.py b/Lib/test/test_zipfile/_path/test_path.py
similarity index 89%
rename from Lib/test/test_zipfile/test_path.py
rename to Lib/test/test_zipfile/_path/test_path.py
index aff91e53995875..c66cb3cba69ebd 100644
--- a/Lib/test/test_zipfile/test_path.py
+++ b/Lib/test/test_zipfile/_path/test_path.py
@@ -41,9 +41,13 @@ def build_alpharep_fixture():
     │   ├── d
     │   │   └── e.txt
     │   └── f.txt
-    └── g
-        └── h
-            └── i.txt
+    ├── g
+    │   └── h
+    │       └── i.txt
+    └── j
+        ├── k.bin
+        ├── l.baz
+        └── m.bar
 
     This fixture has the following key characteristics:
 
@@ -51,6 +55,7 @@ def build_alpharep_fixture():
     - a file two levels deep (b/d/e)
     - multiple files in a directory (b/c, b/f)
     - a directory containing only a directory (g/h)
+    - a directory with files of different extensions (j/klm)
 
     "alpha" because it uses alphabet
     "rep" because it's a representative example
@@ -62,6 +67,9 @@ def build_alpharep_fixture():
     zf.writestr("b/d/e.txt", b"content of e")
     zf.writestr("b/f.txt", b"content of f")
     zf.writestr("g/h/i.txt", b"content of i")
+    zf.writestr("j/k.bin", b"content of k")
+    zf.writestr("j/l.baz", b"content of l")
+    zf.writestr("j/m.bar", b"content of m")
     zf.filename = "alpharep.zip"
     return zf
 
@@ -92,7 +100,7 @@ def zipfile_ondisk(self, alpharep):
     def test_iterdir_and_types(self, alpharep):
         root = zipfile.Path(alpharep)
         assert root.is_dir()
-        a, b, g = root.iterdir()
+        a, b, g, j = root.iterdir()
         assert a.is_file()
         assert b.is_dir()
         assert g.is_dir()
@@ -112,7 +120,7 @@ def test_is_file_missing(self, alpharep):
     @pass_alpharep
     def test_iterdir_on_file(self, alpharep):
         root = zipfile.Path(alpharep)
-        a, b, g = root.iterdir()
+        a, b, g, j = root.iterdir()
         with self.assertRaises(ValueError):
             a.iterdir()
 
@@ -127,7 +135,7 @@ def test_subdir_is_dir(self, alpharep):
     @pass_alpharep
     def test_open(self, alpharep):
         root = zipfile.Path(alpharep)
-        a, b, g = root.iterdir()
+        a, b, g, j = root.iterdir()
         with a.open(encoding="utf-8") as strm:
             data = strm.read()
         self.assertEqual(data, "content of a")
@@ -229,7 +237,7 @@ def test_open_missing_directory(self):
     @pass_alpharep
     def test_read(self, alpharep):
         root = zipfile.Path(alpharep)
-        a, b, g = root.iterdir()
+        a, b, g, j = root.iterdir()
         assert a.read_text(encoding="utf-8") == "content of a"
         # Also check positional encoding arg (gh-101144).
         assert a.read_text("utf-8") == "content of a"
@@ -295,7 +303,7 @@ def test_mutability(self, alpharep):
         reflect that change.
         """
         root = zipfile.Path(alpharep)
-        a, b, g = root.iterdir()
+        a, b, g, j = root.iterdir()
         alpharep.writestr('foo.txt', 'foo')
         alpharep.writestr('bar/baz.txt', 'baz')
         assert any(child.name == 'foo.txt' for child in root.iterdir())
@@ -394,6 +402,13 @@ def test_suffixes(self, alpharep):
         e = root / '.hgrc'
         assert e.suffixes == []
 
+    @pass_alpharep
+    def test_suffix_no_filename(self, alpharep):
+        alpharep.filename = None
+        root = zipfile.Path(alpharep)
+        assert root.joinpath('example').suffix == ""
+        assert root.joinpath('example').suffixes == []
+
     @pass_alpharep
     def test_stem(self, alpharep):
         """
@@ -411,6 +426,8 @@ def test_stem(self, alpharep):
         d = root / "d"
         assert d.stem == "d"
 
+        assert (root / ".gitignore").stem == ".gitignore"
+
     @pass_alpharep
     def test_root_parent(self, alpharep):
         root = zipfile.Path(alpharep)
@@ -442,12 +459,49 @@ def test_match_and_glob(self, alpharep):
         assert not root.match("*.txt")
 
         assert list(root.glob("b/c.*")) == [zipfile.Path(alpharep, "b/c.txt")]
+        assert list(root.glob("b/*.txt")) == [
+            zipfile.Path(alpharep, "b/c.txt"),
+            zipfile.Path(alpharep, "b/f.txt"),
+        ]
 
+    @pass_alpharep
+    def test_glob_recursive(self, alpharep):
+        root = zipfile.Path(alpharep)
         files = root.glob("**/*.txt")
         assert all(each.match("*.txt") for each in files)
 
         assert list(root.glob("**/*.txt")) == list(root.rglob("*.txt"))
 
+    @pass_alpharep
+    def test_glob_subdirs(self, alpharep):
+        root = zipfile.Path(alpharep)
+
+        assert list(root.glob("*/i.txt")) == []
+        assert list(root.rglob("*/i.txt")) == [zipfile.Path(alpharep, "g/h/i.txt")]
+
+    @pass_alpharep
+    def test_glob_does_not_overmatch_dot(self, alpharep):
+        root = zipfile.Path(alpharep)
+
+        assert list(root.glob("*.xt")) == []
+
+    @pass_alpharep
+    def test_glob_single_char(self, alpharep):
+        root = zipfile.Path(alpharep)
+
+        assert list(root.glob("a?txt")) == [zipfile.Path(alpharep, "a.txt")]
+        assert list(root.glob("a[.]txt")) == [zipfile.Path(alpharep, "a.txt")]
+        assert list(root.glob("a[?]txt")) == []
+
+    @pass_alpharep
+    def test_glob_chars(self, alpharep):
+        root = zipfile.Path(alpharep)
+
+        assert list(root.glob("j/?.b[ai][nz]")) == [
+            zipfile.Path(alpharep, "j/k.bin"),
+            zipfile.Path(alpharep, "j/l.baz"),
+        ]
+
     def test_glob_empty(self):
         root = zipfile.Path(zipfile.ZipFile(io.BytesIO(), 'w'))
         with self.assertRaises(ValueError):
diff --git a/Lib/test/test_zipfile/_path/write-alpharep.py b/Lib/test/test_zipfile/_path/write-alpharep.py
new file mode 100644
index 00000000000000..48c09b537179fd
--- /dev/null
+++ b/Lib/test/test_zipfile/_path/write-alpharep.py
@@ -0,0 +1,4 @@
+from . import test_path
+
+
+__name__ == '__main__' and test_path.build_alpharep_fixture().extractall('alpharep')
diff --git a/Lib/test/test_zipfile/test_complexity.py b/Lib/test/test_zipfile/test_complexity.py
deleted file mode 100644
index 3432dc39e56c4e..00000000000000
--- a/Lib/test/test_zipfile/test_complexity.py
+++ /dev/null
@@ -1,24 +0,0 @@
-import unittest
-import string
-import zipfile
-
-from ._functools import compose
-from ._itertools import consume
-
-from ._support import import_or_skip
-
-
-big_o = import_or_skip('big_o')
-
-
-class TestComplexity(unittest.TestCase):
-    def test_implied_dirs_performance(self):
-        best, others = big_o.big_o(
-            compose(consume, zipfile.CompleteDirs._implied_dirs),
-            lambda size: [
-                '/'.join(string.ascii_lowercase + str(n)) for n in range(size)
-            ],
-            max_n=1000,
-            min_n=1,
-        )
-        assert best <= big_o.complexities.Linear
diff --git a/Lib/test/test_zipfile/test_core.py b/Lib/test/test_zipfile/test_core.py
index 73c6b0185a1a0e..a51764b9297363 100644
--- a/Lib/test/test_zipfile/test_core.py
+++ b/Lib/test/test_zipfile/test_core.py
@@ -1080,6 +1080,159 @@ def test_generated_valid_zip64_extra(self):
                     self.assertEqual(zinfo.header_offset, expected_header_offset)
                     self.assertEqual(zf.read(zinfo), expected_content)
 
+    def test_force_zip64(self):
+        """Test that forcing zip64 extensions correctly notes this in the zip file"""
+
+        # GH-103861 describes an issue where forcing a small file to use zip64
+        # extensions would add a zip64 extra record, but not change the data
+        # sizes to 0xFFFFFFFF to indicate to the extractor that the zip64
+        # record should be read. Additionally, it would not set the required
+        # version to indicate that zip64 extensions are required to extract it.
+        # This test replicates the situation and reads the raw data to specifically ensure:
+        #  - The required extract version is always >= ZIP64_VERSION
+        #  - The compressed and uncompressed size in the file headers are both
+        #     0xFFFFFFFF (ie. point to zip64 record)
+        #  - The zip64 record is provided and has the correct sizes in it
+        # Other aspects of the zip are checked as well, but verifying the above is the main goal.
+        # Because this is hard to verify by parsing the data as a zip, the raw
+        # bytes are checked to ensure that they line up with the zip spec.
+        # The spec for this can be found at: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
+        # The relevent sections for this test are:
+        #  - 4.3.7 for local file header
+        #  - 4.5.3 for zip64 extra field
+
+        data = io.BytesIO()
+        with zipfile.ZipFile(data, mode="w", allowZip64=True) as zf:
+            with zf.open("text.txt", mode="w", force_zip64=True) as zi:
+                zi.write(b"_")
+
+        zipdata = data.getvalue()
+
+        # pull out and check zip information
+        (
+            header, vers, os, flags, comp, csize, usize, fn_len,
+            ex_total_len, filename, ex_id, ex_len, ex_usize, ex_csize, cd_sig
+        ) = struct.unpack("<4sBBHH8xIIHH8shhQQx4s", zipdata[:63])
+
+        self.assertEqual(header, b"PK\x03\x04")  # local file header
+        self.assertGreaterEqual(vers, zipfile.ZIP64_VERSION)  # requires zip64 to extract
+        self.assertEqual(os, 0)  # compatible with MS-DOS
+        self.assertEqual(flags, 0)  # no flags
+        self.assertEqual(comp, 0)  # compression method = stored
+        self.assertEqual(csize, 0xFFFFFFFF)  # sizes are in zip64 extra
+        self.assertEqual(usize, 0xFFFFFFFF)
+        self.assertEqual(fn_len, 8)  # filename len
+        self.assertEqual(ex_total_len, 20)  # size of extra records
+        self.assertEqual(ex_id, 1)  # Zip64 extra record
+        self.assertEqual(ex_len, 16)  # 16 bytes of data
+        self.assertEqual(ex_usize, 1)  # uncompressed size
+        self.assertEqual(ex_csize, 1)  # compressed size
+        self.assertEqual(cd_sig, b"PK\x01\x02") # ensure the central directory header is next
+
+        z = zipfile.ZipFile(io.BytesIO(zipdata))
+        zinfos = z.infolist()
+        self.assertEqual(len(zinfos), 1)
+        self.assertGreaterEqual(zinfos[0].extract_version, zipfile.ZIP64_VERSION)  # requires zip64 to extract
+
+    def test_unseekable_zip_unknown_filesize(self):
+        """Test that creating a zip with/without seeking will raise a RuntimeError if zip64 was required but not used"""
+
+        def make_zip(fp):
+            with zipfile.ZipFile(fp, mode="w", allowZip64=True) as zf:
+                with zf.open("text.txt", mode="w", force_zip64=False) as zi:
+                    zi.write(b"_" * (zipfile.ZIP64_LIMIT + 1))
+
+        self.assertRaises(RuntimeError, make_zip, io.BytesIO())
+        self.assertRaises(RuntimeError, make_zip, Unseekable(io.BytesIO()))
+
+    def test_zip64_required_not_allowed_fail(self):
+        """Test that trying to add a large file to a zip that doesn't allow zip64 extensions fails on add"""
+        def make_zip(fp):
+            with zipfile.ZipFile(fp, mode="w", allowZip64=False) as zf:
+                # pretend zipfile.ZipInfo.from_file was used to get the name and filesize
+                info = zipfile.ZipInfo("text.txt")
+                info.file_size = zipfile.ZIP64_LIMIT + 1
+                zf.open(info, mode="w")
+
+        self.assertRaises(zipfile.LargeZipFile, make_zip, io.BytesIO())
+        self.assertRaises(zipfile.LargeZipFile, make_zip, Unseekable(io.BytesIO()))
+
+    def test_unseekable_zip_known_filesize(self):
+        """Test that creating a zip without seeking will use zip64 extensions if the file size is provided up-front"""
+
+        # This test ensures that the zip will use a zip64 data descriptor (same
+        # as a regular data descriptor except the sizes are 8 bytes instead of
+        # 4) record to communicate the size of a file if the zip is being
+        # written to an unseekable stream.
+        # Because this sort of thing is hard to verify by parsing the data back
+        # in as a zip, this test looks at the raw bytes created to ensure that
+        # the correct data has been generated.
+        # The spec for this can be found at: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
+        # The relevent sections for this test are:
+        #  - 4.3.7 for local file header
+        #  - 4.3.9 for the data descriptor
+        #  - 4.5.3 for zip64 extra field
+
+        file_size = zipfile.ZIP64_LIMIT + 1
+
+        def make_zip(fp):
+            with zipfile.ZipFile(fp, mode="w", allowZip64=True) as zf:
+                # pretend zipfile.ZipInfo.from_file was used to get the name and filesize
+                info = zipfile.ZipInfo("text.txt")
+                info.file_size = file_size
+                with zf.open(info, mode="w", force_zip64=False) as zi:
+                    zi.write(b"_" * file_size)
+            return fp
+
+        # check seekable file information
+        seekable_data = make_zip(io.BytesIO()).getvalue()
+        (
+            header, vers, os, flags, comp, csize, usize, fn_len,
+            ex_total_len, filename, ex_id, ex_len, ex_usize, ex_csize,
+            cd_sig
+        ) = struct.unpack("<4sBBHH8xIIHH8shhQQ{}x4s".format(file_size), seekable_data[:62 + file_size])
+
+        self.assertEqual(header, b"PK\x03\x04")  # local file header
+        self.assertGreaterEqual(vers, zipfile.ZIP64_VERSION)  # requires zip64 to extract
+        self.assertEqual(os, 0)  # compatible with MS-DOS
+        self.assertEqual(flags, 0)  # no flags set
+        self.assertEqual(comp, 0)  # compression method = stored
+        self.assertEqual(csize, 0xFFFFFFFF)  # sizes are in zip64 extra
+        self.assertEqual(usize, 0xFFFFFFFF)
+        self.assertEqual(fn_len, 8)  # filename len
+        self.assertEqual(ex_total_len, 20)  # size of extra records
+        self.assertEqual(ex_id, 1)  # Zip64 extra record
+        self.assertEqual(ex_len, 16)  # 16 bytes of data
+        self.assertEqual(ex_usize, file_size)  # uncompressed size
+        self.assertEqual(ex_csize, file_size)  # compressed size
+        self.assertEqual(cd_sig, b"PK\x01\x02") # ensure the central directory header is next
+
+        # check unseekable file information
+        unseekable_data = make_zip(Unseekable(io.BytesIO())).fp.getvalue()
+        (
+            header, vers, os, flags, comp, csize, usize, fn_len,
+            ex_total_len, filename, ex_id, ex_len, ex_usize, ex_csize,
+            dd_header, dd_usize, dd_csize, cd_sig
+        ) = struct.unpack("<4sBBHH8xIIHH8shhQQ{}x4s4xQQ4s".format(file_size), unseekable_data[:86 + file_size])
+
+        self.assertEqual(header, b"PK\x03\x04")  # local file header
+        self.assertGreaterEqual(vers, zipfile.ZIP64_VERSION)  # requires zip64 to extract
+        self.assertEqual(os, 0)  # compatible with MS-DOS
+        self.assertEqual("{:b}".format(flags), "1000")  # streaming flag set
+        self.assertEqual(comp, 0)  # compression method = stored
+        self.assertEqual(csize, 0xFFFFFFFF)  # sizes are in zip64 extra
+        self.assertEqual(usize, 0xFFFFFFFF)
+        self.assertEqual(fn_len, 8)  # filename len
+        self.assertEqual(ex_total_len, 20)  # size of extra records
+        self.assertEqual(ex_id, 1)  # Zip64 extra record
+        self.assertEqual(ex_len, 16)  # 16 bytes of data
+        self.assertEqual(ex_usize, 0)  # uncompressed size - 0 to defer to data descriptor
+        self.assertEqual(ex_csize, 0)  # compressed size - 0 to defer to data descriptor
+        self.assertEqual(dd_header, b"PK\07\x08")  # data descriptor
+        self.assertEqual(dd_usize, file_size)  # file size (8 bytes because zip64)
+        self.assertEqual(dd_csize, file_size)  # compressed size (8 bytes because zip64)
+        self.assertEqual(cd_sig, b"PK\x01\x02") # ensure the central directory header is next
+
 
 @requires_zlib()
 class DeflateTestZip64InSmallFiles(AbstractTestZip64InSmallFiles,
@@ -1601,7 +1754,7 @@ def test_unsupported_version(self):
     @requires_zlib()
     def test_read_unicode_filenames(self):
         # bug #10801
-        fname = findfile('zip_cp437_header.zip')
+        fname = findfile('zip_cp437_header.zip', subdir='archivetestdata')
         with zipfile.ZipFile(fname) as zipfp:
             for name in zipfp.namelist():
                 zipfp.open(name).close()
@@ -1616,13 +1769,9 @@ def test_write_unicode_filenames(self):
             self.assertEqual(zf.filelist[0].filename, "foo.txt")
             self.assertEqual(zf.filelist[1].filename, "\xf6.txt")
 
-    @requires_zlib()
-    def test_read_zipfile_containing_unicode_path_extra_field(self):
+    def create_zipfile_with_extra_data(self, filename, extra_data_name):
         with zipfile.ZipFile(TESTFN, mode='w') as zf:
-            # create a file with a non-ASCII name
-            filename = '�름.txt'
-            filename_encoded = filename.encode('utf-8')
-
+            filename_encoded = filename.encode("utf-8")
             # create a ZipInfo object with Unicode path extra field
             zip_info = zipfile.ZipInfo(filename)
 
@@ -1632,7 +1781,7 @@ def test_read_zipfile_containing_unicode_path_extra_field(self):
             import zlib
             filename_crc = struct.pack('<L', zlib.crc32(filename_encoded))
 
-            extra_data = version_of_unicode_path + filename_crc + filename_encoded
+            extra_data = version_of_unicode_path + filename_crc + extra_data_name
             tsize = len(extra_data).to_bytes(2, 'little')
 
             zip_info.extra = tag_for_unicode_path + tsize + extra_data
@@ -1640,9 +1789,24 @@ def test_read_zipfile_containing_unicode_path_extra_field(self):
             # add the file to the ZIP archive
             zf.writestr(zip_info, b'Hello World!')
 
+    @requires_zlib()
+    def test_read_zipfile_containing_unicode_path_extra_field(self):
+        self.create_zipfile_with_extra_data("�름.txt", "�름.txt".encode("utf-8"))
         with zipfile.ZipFile(TESTFN, "r") as zf:
             self.assertEqual(zf.filelist[0].filename, "�름.txt")
 
+    @requires_zlib()
+    def test_read_zipfile_warning(self):
+        self.create_zipfile_with_extra_data("�름.txt", b"")
+        with self.assertWarns(UserWarning):
+            zipfile.ZipFile(TESTFN, "r").close()
+
+    @requires_zlib()
+    def test_read_zipfile_error(self):
+        self.create_zipfile_with_extra_data("�름.txt", b"\xff")
+        with self.assertRaises(zipfile.BadZipfile):
+            zipfile.ZipFile(TESTFN, "r").close()
+
     def test_read_after_write_unicode_filenames(self):
         with zipfile.ZipFile(TESTFN2, 'w') as zipfp:
             zipfp.writestr('приклад', b'sample')
@@ -2082,6 +2246,22 @@ def test_seek_tell(self):
                 fp.seek(0, os.SEEK_SET)
                 self.assertEqual(fp.tell(), 0)
 
+    def test_read_after_seek(self):
+        # Issue 102956: Make sure seek(x, os.SEEK_CUR) doesn't break read()
+        txt = b"Charge men!"
+        bloc = txt.find(b"men")
+        with zipfile.ZipFile(TESTFN, "w") as zipf:
+            zipf.writestr("foo.txt", txt)
+        with zipfile.ZipFile(TESTFN, mode="r") as zipf:
+            with zipf.open("foo.txt", "r") as fp:
+                fp.seek(bloc, os.SEEK_CUR)
+                self.assertEqual(fp.read(-1), b'men!')
+        with zipfile.ZipFile(TESTFN, mode="r") as zipf:
+            with zipf.open("foo.txt", "r") as fp:
+                fp.read(6)
+                fp.seek(1, os.SEEK_CUR)
+                self.assertEqual(fp.read(-1), b'men!')
+
     @requires_bz2()
     def test_decompress_without_3rd_party_library(self):
         data = b'PK\x05\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
@@ -2624,7 +2804,7 @@ def setUp(self):
         os.mkdir(TESTFN2)
 
     def test_extract_dir(self):
-        with zipfile.ZipFile(findfile("zipdir.zip")) as zipf:
+        with zipfile.ZipFile(findfile("zipdir.zip", subdir="archivetestdata")) as zipf:
             zipf.extractall(TESTFN2)
         self.assertTrue(os.path.isdir(os.path.join(TESTFN2, "a")))
         self.assertTrue(os.path.isdir(os.path.join(TESTFN2, "a", "b")))
@@ -2793,7 +2973,7 @@ def test_bad_use(self):
         self.assertNotEqual(err.strip(), b'')
 
     def test_test_command(self):
-        zip_name = findfile('zipdir.zip')
+        zip_name = findfile('zipdir.zip', subdir='archivetestdata')
         for opt in '-t', '--test':
             out = self.zipfilecmd(opt, zip_name)
             self.assertEqual(out.rstrip(), b'Done testing')
@@ -2802,7 +2982,7 @@ def test_test_command(self):
         self.assertEqual(out, b'')
 
     def test_list_command(self):
-        zip_name = findfile('zipdir.zip')
+        zip_name = findfile('zipdir.zip', subdir='archivetestdata')
         t = io.StringIO()
         with zipfile.ZipFile(zip_name, 'r') as tf:
             tf.printdir(t)
@@ -2835,7 +3015,7 @@ def test_create_command(self):
                 unlink(TESTFN2)
 
     def test_extract_command(self):
-        zip_name = findfile('zipdir.zip')
+        zip_name = findfile('zipdir.zip', subdir='archivetestdata')
         for opt in '-e', '--extract':
             with temp_dir() as extdir:
                 out = self.zipfilecmd(opt, zip_name, extdir)
@@ -2856,8 +3036,8 @@ class TestExecutablePrependedZip(unittest.TestCase):
     """Test our ability to open zip files with an executable prepended."""
 
     def setUp(self):
-        self.exe_zip = findfile('exe_with_zip', subdir='ziptestdata')
-        self.exe_zip64 = findfile('exe_with_z64', subdir='ziptestdata')
+        self.exe_zip = findfile('exe_with_zip', subdir='archivetestdata')
+        self.exe_zip64 = findfile('exe_with_z64', subdir='archivetestdata')
 
     def _test_zip_works(self, name):
         # bpo28494 sanity check: ensure is_zipfile works on these.
@@ -3050,14 +3230,14 @@ def test_no_data(self):
         b = s.pack(2, 0)
         c = s.pack(3, 0)
 
-        self.assertEqual(b'', zipfile._strip_extra(a, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b, zipfile._strip_extra(b, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b'', zipfile._Extra.strip(a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b, zipfile._Extra.strip(b, (self.ZIP64_EXTRA,)))
         self.assertEqual(
-            b+b"z", zipfile._strip_extra(b+b"z", (self.ZIP64_EXTRA,)))
+            b+b"z", zipfile._Extra.strip(b+b"z", (self.ZIP64_EXTRA,)))
 
-        self.assertEqual(b+c, zipfile._strip_extra(a+b+c, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b+c, zipfile._strip_extra(b+a+c, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b+c, zipfile._strip_extra(b+c+a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b+c, zipfile._Extra.strip(a+b+c, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b+c, zipfile._Extra.strip(b+a+c, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b+c, zipfile._Extra.strip(b+c+a, (self.ZIP64_EXTRA,)))
 
     def test_with_data(self):
         s = struct.Struct("<HH")
@@ -3065,38 +3245,38 @@ def test_with_data(self):
         b = s.pack(2, 2) + b"bb"
         c = s.pack(3, 3) + b"ccc"
 
-        self.assertEqual(b"", zipfile._strip_extra(a, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b, zipfile._strip_extra(b, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b"", zipfile._Extra.strip(a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b, zipfile._Extra.strip(b, (self.ZIP64_EXTRA,)))
         self.assertEqual(
-            b+b"z", zipfile._strip_extra(b+b"z", (self.ZIP64_EXTRA,)))
+            b+b"z", zipfile._Extra.strip(b+b"z", (self.ZIP64_EXTRA,)))
 
-        self.assertEqual(b+c, zipfile._strip_extra(a+b+c, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b+c, zipfile._strip_extra(b+a+c, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b+c, zipfile._strip_extra(b+c+a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b+c, zipfile._Extra.strip(a+b+c, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b+c, zipfile._Extra.strip(b+a+c, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b+c, zipfile._Extra.strip(b+c+a, (self.ZIP64_EXTRA,)))
 
     def test_multiples(self):
         s = struct.Struct("<HH")
         a = s.pack(self.ZIP64_EXTRA, 1) + b"a"
         b = s.pack(2, 2) + b"bb"
 
-        self.assertEqual(b"", zipfile._strip_extra(a+a, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b"", zipfile._strip_extra(a+a+a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b"", zipfile._Extra.strip(a+a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b"", zipfile._Extra.strip(a+a+a, (self.ZIP64_EXTRA,)))
         self.assertEqual(
-            b"z", zipfile._strip_extra(a+a+b"z", (self.ZIP64_EXTRA,)))
+            b"z", zipfile._Extra.strip(a+a+b"z", (self.ZIP64_EXTRA,)))
         self.assertEqual(
-            b+b"z", zipfile._strip_extra(a+a+b+b"z", (self.ZIP64_EXTRA,)))
+            b+b"z", zipfile._Extra.strip(a+a+b+b"z", (self.ZIP64_EXTRA,)))
 
-        self.assertEqual(b, zipfile._strip_extra(a+a+b, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b, zipfile._strip_extra(a+b+a, (self.ZIP64_EXTRA,)))
-        self.assertEqual(b, zipfile._strip_extra(b+a+a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b, zipfile._Extra.strip(a+a+b, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b, zipfile._Extra.strip(a+b+a, (self.ZIP64_EXTRA,)))
+        self.assertEqual(b, zipfile._Extra.strip(b+a+a, (self.ZIP64_EXTRA,)))
 
     def test_too_short(self):
-        self.assertEqual(b"", zipfile._strip_extra(b"", (self.ZIP64_EXTRA,)))
-        self.assertEqual(b"z", zipfile._strip_extra(b"z", (self.ZIP64_EXTRA,)))
+        self.assertEqual(b"", zipfile._Extra.strip(b"", (self.ZIP64_EXTRA,)))
+        self.assertEqual(b"z", zipfile._Extra.strip(b"z", (self.ZIP64_EXTRA,)))
         self.assertEqual(
-            b"zz", zipfile._strip_extra(b"zz", (self.ZIP64_EXTRA,)))
+            b"zz", zipfile._Extra.strip(b"zz", (self.ZIP64_EXTRA,)))
         self.assertEqual(
-            b"zzz", zipfile._strip_extra(b"zzz", (self.ZIP64_EXTRA,)))
+            b"zzz", zipfile._Extra.strip(b"zzz", (self.ZIP64_EXTRA,)))
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_zipimport.py b/Lib/test/test_zipimport.py
index 14c19719e260c4..c12798d221e9b7 100644
--- a/Lib/test/test_zipimport.py
+++ b/Lib/test/test_zipimport.py
@@ -520,10 +520,10 @@ def testInvalidateCaches(self):
                 z.writestr(zinfo, data)
 
         zi = zipimport.zipimporter(TEMP_ZIP)
-        self.assertEqual(zi._files.keys(), files.keys())
+        self.assertEqual(zi._get_files().keys(), files.keys())
         # Check that the file information remains accurate after reloading
         zi.invalidate_caches()
-        self.assertEqual(zi._files.keys(), files.keys())
+        self.assertEqual(zi._get_files().keys(), files.keys())
         # Add a new file to the ZIP archive
         newfile = {"spam2" + pyc_ext: (NOW, test_pyc)}
         files.update(newfile)
@@ -535,17 +535,54 @@ def testInvalidateCaches(self):
                 z.writestr(zinfo, data)
         # Check that we can detect the new file after invalidating the cache
         zi.invalidate_caches()
-        self.assertEqual(zi._files.keys(), files.keys())
+        self.assertEqual(zi._get_files().keys(), files.keys())
         spec = zi.find_spec('spam2')
         self.assertIsNotNone(spec)
         self.assertIsInstance(spec.loader, zipimport.zipimporter)
         # Check that the cached data is removed if the file is deleted
         os.remove(TEMP_ZIP)
         zi.invalidate_caches()
-        self.assertFalse(zi._files)
+        self.assertFalse(zi._get_files())
         self.assertIsNone(zipimport._zip_directory_cache.get(zi.archive))
         self.assertIsNone(zi.find_spec("name_does_not_matter"))
 
+    def testInvalidateCachesWithMultipleZipimports(self):
+        packdir = TESTPACK + os.sep
+        packdir2 = packdir + TESTPACK2 + os.sep
+        files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
+                 packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
+                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc),
+                 "spam" + pyc_ext: (NOW, test_pyc)}
+        self.addCleanup(os_helper.unlink, TEMP_ZIP)
+        with ZipFile(TEMP_ZIP, "w") as z:
+            for name, (mtime, data) in files.items():
+                zinfo = ZipInfo(name, time.localtime(mtime))
+                zinfo.compress_type = self.compression
+                zinfo.comment = b"spam"
+                z.writestr(zinfo, data)
+
+        zi = zipimport.zipimporter(TEMP_ZIP)
+        self.assertEqual(zi._get_files().keys(), files.keys())
+        # Zipimporter for the same path.
+        zi2 = zipimport.zipimporter(TEMP_ZIP)
+        self.assertEqual(zi2._get_files().keys(), files.keys())
+        # Add a new file to the ZIP archive to make the cache wrong.
+        newfile = {"spam2" + pyc_ext: (NOW, test_pyc)}
+        files.update(newfile)
+        with ZipFile(TEMP_ZIP, "a") as z:
+            for name, (mtime, data) in newfile.items():
+                zinfo = ZipInfo(name, time.localtime(mtime))
+                zinfo.compress_type = self.compression
+                zinfo.comment = b"spam"
+                z.writestr(zinfo, data)
+        # Invalidate the cache of the first zipimporter.
+        zi.invalidate_caches()
+        # Check that the second zipimporter detects the new file and isn't using a stale cache.
+        self.assertEqual(zi2._get_files().keys(), files.keys())
+        spec = zi2.find_spec('spam2')
+        self.assertIsNotNone(spec)
+        self.assertIsInstance(spec.loader, zipimport.zipimporter)
+
     def testZipImporterMethodsInSubDirectory(self):
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index 3dac70eb12852c..ef02c64f886f8a 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -3,11 +3,10 @@
 from test.support import import_helper
 import binascii
 import copy
-import os
 import pickle
 import random
 import sys
-from test.support import bigmemtest, _1G, _4G
+from test.support import bigmemtest, _1G, _4G, skip_on_s390x
 
 
 zlib = import_helper.import_module('zlib')
@@ -19,6 +18,21 @@
         hasattr(zlib.decompressobj(), "copy"),
         'requires Decompress.copy()')
 
+
+def _zlib_runtime_version_tuple(zlib_version=zlib.ZLIB_RUNTIME_VERSION):
+    # Register "1.2.3" as "1.2.3.0"
+    # or "1.2.0-linux","1.2.0.f","1.2.0.f-linux"
+    v = zlib_version.split('-', 1)[0].split('.')
+    if len(v) < 4:
+        v.append('0')
+    elif not v[-1].isnumeric():
+        v[-1] = '0'
+    return tuple(map(int, v))
+
+
+ZLIB_RUNTIME_VERSION_TUPLE = _zlib_runtime_version_tuple()
+
+
 # bpo-46623: On s390x, when a hardware accelerator is used, using different
 # ways to compress data with zlib can produce different compressed data.
 # Simplified test_pair() code:
@@ -44,10 +58,7 @@
 #   zlib.decompress(func1(data)) == zlib.decompress(func2(data)) == data
 #
 # Make the assumption that s390x always has an accelerator to simplify the skip
-# condition. Windows doesn't have os.uname() but it doesn't support s390x.
-skip_on_s390x = unittest.skipIf(hasattr(os, 'uname') and os.uname().machine == 's390x',
-                                'skipped on s390x')
-
+# condition.
 
 class VersionTestCase(unittest.TestCase):
 
@@ -477,9 +488,8 @@ def test_flushes(self):
         sync_opt = ['Z_NO_FLUSH', 'Z_SYNC_FLUSH', 'Z_FULL_FLUSH',
                     'Z_PARTIAL_FLUSH']
 
-        ver = tuple(int(v) for v in zlib.ZLIB_RUNTIME_VERSION.split('.'))
         # Z_BLOCK has a known failure prior to 1.2.5.3
-        if ver >= (1, 2, 5, 3):
+        if ZLIB_RUNTIME_VERSION_TUPLE >= (1, 2, 5, 3):
             sync_opt.append('Z_BLOCK')
 
         sync_opt = [getattr(zlib, opt) for opt in sync_opt
@@ -516,18 +526,7 @@ def test_odd_flush(self):
 
         # Try 17K of data
         # generate random data stream
-        try:
-            # In 2.3 and later, WichmannHill is the RNG of the bug report
-            gen = random.WichmannHill()
-        except AttributeError:
-            try:
-                # 2.2 called it Random
-                gen = random.Random()
-            except AttributeError:
-                # others might simply have a single RNG
-                gen = random
-        gen.seed(1)
-        data = gen.randbytes(17 * 1024)
+        data = random.randbytes(17 * 1024)
 
         # compress, sync-flush, and decompress
         first = co.compress(data)
@@ -808,16 +807,7 @@ def test_large_unconsumed_tail(self, size):
 
     def test_wbits(self):
         # wbits=0 only supported since zlib v1.2.3.5
-        # Register "1.2.3" as "1.2.3.0"
-        # or "1.2.0-linux","1.2.0.f","1.2.0.f-linux"
-        v = zlib.ZLIB_RUNTIME_VERSION.split('-', 1)[0].split('.')
-        if len(v) < 4:
-            v.append('0')
-        elif not v[-1].isnumeric():
-            v[-1] = '0'
-
-        v = tuple(map(int, v))
-        supports_wbits_0 = v >= (1, 2, 3, 5)
+        supports_wbits_0 = ZLIB_RUNTIME_VERSION_TUPLE >= (1, 2, 3, 5)
 
         co = zlib.compressobj(level=1, wbits=15)
         zlib15 = co.compress(HAMLET_SCENE) + co.flush()
@@ -992,10 +982,10 @@ def testEOFError(self):
     @bigmemtest(size=_4G + 100, memuse=3.3)
     def testDecompress4G(self, size):
         # "Test zlib._ZlibDecompressor.decompress() with >4GiB input"
-        blocksize = 10 * 1024 * 1024
+        blocksize = min(10 * 1024 * 1024, size)
         block = random.randbytes(blocksize)
         try:
-            data = block * (size // blocksize + 1)
+            data = block * ((size-1) // blocksize + 1)
             compressed = zlib.compress(data)
             zlibd = zlib._ZlibDecompressor()
             decompressed = zlibd.decompress(compressed)
diff --git a/Lib/test/test_zoneinfo/__init__.py b/Lib/test/test_zoneinfo/__init__.py
index c3ea567103275d..4b16ecc31156a5 100644
--- a/Lib/test/test_zoneinfo/__init__.py
+++ b/Lib/test/test_zoneinfo/__init__.py
@@ -1,2 +1,5 @@
-from .test_zoneinfo import *
-from .test_zoneinfo_property import *
+import os
+from test.support import load_package_tests
+
+def load_tests(*args):
+    return load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_zoneinfo/test_zoneinfo.py b/Lib/test/test_zoneinfo/test_zoneinfo.py
index ae921f7432c466..3766ceac8385f2 100644
--- a/Lib/test/test_zoneinfo/test_zoneinfo.py
+++ b/Lib/test/test_zoneinfo/test_zoneinfo.py
@@ -1001,6 +1001,80 @@ def test_tzstr_from_utc(self):
 
                 self.assertEqual(dt_act, dt_utc)
 
+    def test_extreme_tzstr(self):
+        tzstrs = [
+            # Extreme offset hour
+            "AAA24",
+            "AAA+24",
+            "AAA-24",
+            "AAA24BBB,J60/2,J300/2",
+            "AAA+24BBB,J60/2,J300/2",
+            "AAA-24BBB,J60/2,J300/2",
+            "AAA4BBB24,J60/2,J300/2",
+            "AAA4BBB+24,J60/2,J300/2",
+            "AAA4BBB-24,J60/2,J300/2",
+            # Extreme offset minutes
+            "AAA4:00BBB,J60/2,J300/2",
+            "AAA4:59BBB,J60/2,J300/2",
+            "AAA4BBB5:00,J60/2,J300/2",
+            "AAA4BBB5:59,J60/2,J300/2",
+            # Extreme offset seconds
+            "AAA4:00:00BBB,J60/2,J300/2",
+            "AAA4:00:59BBB,J60/2,J300/2",
+            "AAA4BBB5:00:00,J60/2,J300/2",
+            "AAA4BBB5:00:59,J60/2,J300/2",
+            # Extreme total offset
+            "AAA24:59:59BBB5,J60/2,J300/2",
+            "AAA-24:59:59BBB5,J60/2,J300/2",
+            "AAA4BBB24:59:59,J60/2,J300/2",
+            "AAA4BBB-24:59:59,J60/2,J300/2",
+            # Extreme months
+            "AAA4BBB,M12.1.1/2,M1.1.1/2",
+            "AAA4BBB,M1.1.1/2,M12.1.1/2",
+            # Extreme weeks
+            "AAA4BBB,M1.5.1/2,M1.1.1/2",
+            "AAA4BBB,M1.1.1/2,M1.5.1/2",
+            # Extreme weekday
+            "AAA4BBB,M1.1.6/2,M2.1.1/2",
+            "AAA4BBB,M1.1.1/2,M2.1.6/2",
+            # Extreme numeric offset
+            "AAA4BBB,0/2,20/2",
+            "AAA4BBB,0/2,0/14",
+            "AAA4BBB,20/2,365/2",
+            "AAA4BBB,365/2,365/14",
+            # Extreme julian offset
+            "AAA4BBB,J1/2,J20/2",
+            "AAA4BBB,J1/2,J1/14",
+            "AAA4BBB,J20/2,J365/2",
+            "AAA4BBB,J365/2,J365/14",
+            # Extreme transition hour
+            "AAA4BBB,J60/167,J300/2",
+            "AAA4BBB,J60/+167,J300/2",
+            "AAA4BBB,J60/-167,J300/2",
+            "AAA4BBB,J60/2,J300/167",
+            "AAA4BBB,J60/2,J300/+167",
+            "AAA4BBB,J60/2,J300/-167",
+            # Extreme transition minutes
+            "AAA4BBB,J60/2:00,J300/2",
+            "AAA4BBB,J60/2:59,J300/2",
+            "AAA4BBB,J60/2,J300/2:00",
+            "AAA4BBB,J60/2,J300/2:59",
+            # Extreme transition seconds
+            "AAA4BBB,J60/2:00:00,J300/2",
+            "AAA4BBB,J60/2:00:59,J300/2",
+            "AAA4BBB,J60/2,J300/2:00:00",
+            "AAA4BBB,J60/2,J300/2:00:59",
+            # Extreme total transition time
+            "AAA4BBB,J60/167:59:59,J300/2",
+            "AAA4BBB,J60/-167:59:59,J300/2",
+            "AAA4BBB,J60/2,J300/167:59:59",
+            "AAA4BBB,J60/2,J300/-167:59:59",
+        ]
+
+        for tzstr in tzstrs:
+            with self.subTest(tzstr=tzstr):
+                self.zone_from_tzstr(tzstr)
+
     def test_invalid_tzstr(self):
         invalid_tzstrs = [
             "PST8PDT",  # DST but no transition specified
@@ -1008,16 +1082,33 @@ def test_invalid_tzstr(self):
             "GMT,M3.2.0/2,M11.1.0/3",  # Transition rule but no DST
             "GMT0+11,M3.2.0/2,M11.1.0/3",  # Unquoted alphanumeric in DST
             "PST8PDT,M3.2.0/2",  # Only one transition rule
-            # Invalid offsets
-            "STD+25",
-            "STD-25",
-            "STD+374",
-            "STD+374DST,M3.2.0/2,M11.1.0/3",
-            "STD+23DST+25,M3.2.0/2,M11.1.0/3",
-            "STD-23DST-25,M3.2.0/2,M11.1.0/3",
+            # Invalid offset hours
+            "AAA168",
+            "AAA+168",
+            "AAA-168",
+            "AAA168BBB,J60/2,J300/2",
+            "AAA+168BBB,J60/2,J300/2",
+            "AAA-168BBB,J60/2,J300/2",
+            "AAA4BBB168,J60/2,J300/2",
+            "AAA4BBB+168,J60/2,J300/2",
+            "AAA4BBB-168,J60/2,J300/2",
+            # Invalid offset minutes
+            "AAA4:0BBB,J60/2,J300/2",
+            "AAA4:100BBB,J60/2,J300/2",
+            "AAA4BBB5:0,J60/2,J300/2",
+            "AAA4BBB5:100,J60/2,J300/2",
+            # Invalid offset seconds
+            "AAA4:00:0BBB,J60/2,J300/2",
+            "AAA4:00:100BBB,J60/2,J300/2",
+            "AAA4BBB5:00:0,J60/2,J300/2",
+            "AAA4BBB5:00:100,J60/2,J300/2",
             # Completely invalid dates
             "AAA4BBB,M1443339,M11.1.0/3",
             "AAA4BBB,M3.2.0/2,0349309483959c",
+            "AAA4BBB,,J300/2",
+            "AAA4BBB,z,J300/2",
+            "AAA4BBB,J60/2,",
+            "AAA4BBB,J60/2,z",
             # Invalid months
             "AAA4BBB,M13.1.1/2,M1.1.1/2",
             "AAA4BBB,M1.1.1/2,M13.1.1/2",
@@ -1037,6 +1128,26 @@ def test_invalid_tzstr(self):
             # Invalid julian offset
             "AAA4BBB,J0/2,J20/2",
             "AAA4BBB,J20/2,J366/2",
+            # Invalid transition time
+            "AAA4BBB,J60/2/3,J300/2",
+            "AAA4BBB,J60/2,J300/2/3",
+            # Invalid transition hour
+            "AAA4BBB,J60/168,J300/2",
+            "AAA4BBB,J60/+168,J300/2",
+            "AAA4BBB,J60/-168,J300/2",
+            "AAA4BBB,J60/2,J300/168",
+            "AAA4BBB,J60/2,J300/+168",
+            "AAA4BBB,J60/2,J300/-168",
+            # Invalid transition minutes
+            "AAA4BBB,J60/2:0,J300/2",
+            "AAA4BBB,J60/2:100,J300/2",
+            "AAA4BBB,J60/2,J300/2:0",
+            "AAA4BBB,J60/2,J300/2:100",
+            # Invalid transition seconds
+            "AAA4BBB,J60/2:00:0,J300/2",
+            "AAA4BBB,J60/2:00:100,J300/2",
+            "AAA4BBB,J60/2,J300/2:00:0",
+            "AAA4BBB,J60/2,J300/2:00:100",
         ]
 
         for invalid_tzstr in invalid_tzstrs:
diff --git a/Lib/test/imghdrdata/python.gif b/Lib/test/tkinterdata/python.gif
similarity index 100%
rename from Lib/test/imghdrdata/python.gif
rename to Lib/test/tkinterdata/python.gif
diff --git a/Lib/test/imghdrdata/python.pgm b/Lib/test/tkinterdata/python.pgm
similarity index 100%
rename from Lib/test/imghdrdata/python.pgm
rename to Lib/test/tkinterdata/python.pgm
diff --git a/Lib/test/imghdrdata/python.png b/Lib/test/tkinterdata/python.png
similarity index 100%
rename from Lib/test/imghdrdata/python.png
rename to Lib/test/tkinterdata/python.png
diff --git a/Lib/test/imghdrdata/python.ppm b/Lib/test/tkinterdata/python.ppm
similarity index 100%
rename from Lib/test/imghdrdata/python.ppm
rename to Lib/test/tkinterdata/python.ppm
diff --git a/Lib/test/imghdrdata/python.xbm b/Lib/test/tkinterdata/python.xbm
similarity index 100%
rename from Lib/test/imghdrdata/python.xbm
rename to Lib/test/tkinterdata/python.xbm
diff --git a/Lib/test/tokenizedata/__init__.py b/Lib/test/tokenizedata/__init__.py
new file mode 100644
index 00000000000000..e69de29bb2d1d6
diff --git a/Lib/test/bad_coding.py b/Lib/test/tokenizedata/bad_coding.py
similarity index 100%
rename from Lib/test/bad_coding.py
rename to Lib/test/tokenizedata/bad_coding.py
diff --git a/Lib/test/bad_coding2.py b/Lib/test/tokenizedata/bad_coding2.py
similarity index 100%
rename from Lib/test/bad_coding2.py
rename to Lib/test/tokenizedata/bad_coding2.py
diff --git a/Lib/test/badsyntax_3131.py b/Lib/test/tokenizedata/badsyntax_3131.py
similarity index 100%
rename from Lib/test/badsyntax_3131.py
rename to Lib/test/tokenizedata/badsyntax_3131.py
diff --git a/Lib/test/badsyntax_pep3120.py b/Lib/test/tokenizedata/badsyntax_pep3120.py
similarity index 100%
rename from Lib/test/badsyntax_pep3120.py
rename to Lib/test/tokenizedata/badsyntax_pep3120.py
diff --git a/Lib/test/coding20731.py b/Lib/test/tokenizedata/coding20731.py
similarity index 100%
rename from Lib/test/coding20731.py
rename to Lib/test/tokenizedata/coding20731.py
diff --git a/Lib/test/tokenize_tests-latin1-coding-cookie-and-utf8-bom-sig.txt b/Lib/test/tokenizedata/tokenize_tests-latin1-coding-cookie-and-utf8-bom-sig.txt
similarity index 100%
rename from Lib/test/tokenize_tests-latin1-coding-cookie-and-utf8-bom-sig.txt
rename to Lib/test/tokenizedata/tokenize_tests-latin1-coding-cookie-and-utf8-bom-sig.txt
diff --git a/Lib/test/tokenize_tests-no-coding-cookie-and-utf8-bom-sig-only.txt b/Lib/test/tokenizedata/tokenize_tests-no-coding-cookie-and-utf8-bom-sig-only.txt
similarity index 100%
rename from Lib/test/tokenize_tests-no-coding-cookie-and-utf8-bom-sig-only.txt
rename to Lib/test/tokenizedata/tokenize_tests-no-coding-cookie-and-utf8-bom-sig-only.txt
diff --git a/Lib/test/tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt b/Lib/test/tokenizedata/tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt
similarity index 100%
rename from Lib/test/tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt
rename to Lib/test/tokenizedata/tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt
diff --git a/Lib/test/tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt b/Lib/test/tokenizedata/tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt
similarity index 100%
rename from Lib/test/tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt
rename to Lib/test/tokenizedata/tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt
diff --git a/Lib/test/tokenize_tests.txt b/Lib/test/tokenizedata/tokenize_tests.txt
similarity index 100%
rename from Lib/test/tokenize_tests.txt
rename to Lib/test/tokenizedata/tokenize_tests.txt
diff --git a/Lib/test/_typed_dict_helper.py b/Lib/test/typinganndata/_typed_dict_helper.py
similarity index 100%
rename from Lib/test/_typed_dict_helper.py
rename to Lib/test/typinganndata/_typed_dict_helper.py
diff --git a/Lib/test/ann_module.py b/Lib/test/typinganndata/ann_module.py
similarity index 100%
rename from Lib/test/ann_module.py
rename to Lib/test/typinganndata/ann_module.py
diff --git a/Lib/test/ann_module2.py b/Lib/test/typinganndata/ann_module2.py
similarity index 100%
rename from Lib/test/ann_module2.py
rename to Lib/test/typinganndata/ann_module2.py
diff --git a/Lib/test/ann_module3.py b/Lib/test/typinganndata/ann_module3.py
similarity index 100%
rename from Lib/test/ann_module3.py
rename to Lib/test/typinganndata/ann_module3.py
diff --git a/Lib/test/ann_module4.py b/Lib/test/typinganndata/ann_module4.py
similarity index 100%
rename from Lib/test/ann_module4.py
rename to Lib/test/typinganndata/ann_module4.py
diff --git a/Lib/test/ann_module5.py b/Lib/test/typinganndata/ann_module5.py
similarity index 100%
rename from Lib/test/ann_module5.py
rename to Lib/test/typinganndata/ann_module5.py
diff --git a/Lib/test/ann_module6.py b/Lib/test/typinganndata/ann_module6.py
similarity index 100%
rename from Lib/test/ann_module6.py
rename to Lib/test/typinganndata/ann_module6.py
diff --git a/Lib/test/ann_module7.py b/Lib/test/typinganndata/ann_module7.py
similarity index 100%
rename from Lib/test/ann_module7.py
rename to Lib/test/typinganndata/ann_module7.py
diff --git a/Lib/test/ann_module8.py b/Lib/test/typinganndata/ann_module8.py
similarity index 100%
rename from Lib/test/ann_module8.py
rename to Lib/test/typinganndata/ann_module8.py
diff --git a/Lib/test/mod_generics_cache.py b/Lib/test/typinganndata/mod_generics_cache.py
similarity index 76%
rename from Lib/test/mod_generics_cache.py
rename to Lib/test/typinganndata/mod_generics_cache.py
index 9d8b56cf03c364..6c1ee2fec8374d 100644
--- a/Lib/test/mod_generics_cache.py
+++ b/Lib/test/typinganndata/mod_generics_cache.py
@@ -1,6 +1,6 @@
 """Module for testing the behavior of generics across different modules."""
 
-from typing import TypeVar, Generic, Optional
+from typing import TypeVar, Generic, Optional, TypeAliasType
 
 default_a: Optional['A'] = None
 default_b: Optional['B'] = None
@@ -19,3 +19,6 @@ class A(Generic[T]):
     my_inner_a1: 'B.A'
     my_inner_a2: A
     my_outer_a: 'A'  # unless somebody calls get_type_hints with localns=B.__dict__
+
+type Alias = int
+OldStyle = TypeAliasType("OldStyle", int)
diff --git a/Lib/test/ziptestdata/README.md b/Lib/test/ziptestdata/README.md
deleted file mode 100644
index 6b9147db76e178..00000000000000
--- a/Lib/test/ziptestdata/README.md
+++ /dev/null
@@ -1,35 +0,0 @@
-# Test data for `test_zipfile`
-
-The test executables in this directory are created manually from header.sh and
-the `testdata_module_inside_zip.py` file.  You must have infozip's zip utility
-installed (`apt install zip` on Debian).
-
-## Purpose
-
-These are used to test executable files with an appended zipfile, in a scenario
-where the executable is _not_ a Python interpreter itself so our automatic
-zipimport machinery (that'd look for `__main__.py`) is not being used.
-
-## Updating the test executables
-
-If you update header.sh or the testdata_module_inside_zip.py file, rerun the
-commands below.  These are expected to be rarely changed, if ever.
-
-### Standard old format (2.0) zip file
-
-```
-zip -0 zip2.zip testdata_module_inside_zip.py
-cat header.sh zip2.zip >exe_with_zip
-rm zip2.zip
-```
-
-### Modern format (4.5) zip64 file
-
-Redirecting from stdin forces infozip's zip tool to create a zip64.
-
-```
-zip -0 <testdata_module_inside_zip.py >zip64.zip
-cat header.sh zip64.zip >exe_with_z64
-rm zip64.zip
-```
-
diff --git a/Lib/textwrap.py b/Lib/textwrap.py
index 98bedd27ea3a11..7ca393d1c371aa 100644
--- a/Lib/textwrap.py
+++ b/Lib/textwrap.py
@@ -476,13 +476,19 @@ def indent(text, prefix, predicate=None):
     consist solely of whitespace characters.
     """
     if predicate is None:
-        def predicate(line):
-            return line.strip()
-
-    def prefixed_lines():
-        for line in text.splitlines(True):
-            yield (prefix + line if predicate(line) else line)
-    return ''.join(prefixed_lines())
+        # str.splitlines(True) doesn't produce empty string.
+        #  ''.splitlines(True) => []
+        #  'foo\n'.splitlines(True) => ['foo\n']
+        # So we can use just `not s.isspace()` here.
+        predicate = lambda s: not s.isspace()
+
+    prefixed_lines = []
+    for line in text.splitlines(True):
+        if predicate(line):
+            prefixed_lines.append(prefix)
+        prefixed_lines.append(line)
+
+    return ''.join(prefixed_lines)
 
 
 if __name__ == "__main__":
diff --git a/Lib/threading.py b/Lib/threading.py
index df273870fa4273..85aff58968082d 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -4,6 +4,8 @@
 import sys as _sys
 import _thread
 import functools
+import warnings
+import _weakref
 
 from time import monotonic as _time
 from _weakrefset import WeakSet
@@ -32,11 +34,12 @@
            'setprofile_all_threads','settrace_all_threads']
 
 # Rename some stuff so "from threading import *" is safe
-_start_new_thread = _thread.start_new_thread
+_start_joinable_thread = _thread.start_joinable_thread
 _daemon_threads_allowed = _thread.daemon_threads_allowed
 _allocate_lock = _thread.allocate_lock
 _set_sentinel = _thread._set_sentinel
 get_ident = _thread.get_ident
+_is_main_interpreter = _thread._is_main_interpreter
 try:
     get_native_id = _thread.get_native_id
     _HAVE_THREAD_NATIVE_ID = True
@@ -116,6 +119,12 @@ def RLock(*args, **kwargs):
     acquired it.
 
     """
+    if args or kwargs:
+        warnings.warn(
+            'Passing arguments to RLock is deprecated and will be removed in 3.15',
+            DeprecationWarning,
+            stacklevel=2,
+        )
     if _CRLock is None:
         return _PyRLock(*args, **kwargs)
     return _CRLock(*args, **kwargs)
@@ -238,6 +247,13 @@ def _release_save(self):
     def _is_owned(self):
         return self._owner == get_ident()
 
+    # Internal method used for reentrancy checks
+
+    def _recursion_count(self):
+        if self._owner != get_ident():
+            return 0
+        return self._count
+
 _PyRLock = _RLock
 
 
@@ -574,7 +590,7 @@ def __repr__(self):
         return f"<{cls.__module__}.{cls.__qualname__} at {id(self):#x}: {status}>"
 
     def _at_fork_reinit(self):
-        # Private method called by Thread._reset_internal_locks()
+        # Private method called by Thread._after_fork()
         self._cond._at_fork_reinit()
 
     def is_set(self):
@@ -909,6 +925,8 @@ class is implemented.
         if _HAVE_THREAD_NATIVE_ID:
             self._native_id = None
         self._tstate_lock = None
+        self._join_lock = None
+        self._handle = None
         self._started = Event()
         self._is_stopped = False
         self._initialized = True
@@ -918,22 +936,32 @@ class is implemented.
         # For debugging and _after_fork()
         _dangling.add(self)
 
-    def _reset_internal_locks(self, is_alive):
-        # private!  Called by _after_fork() to reset our internal locks as
-        # they may be in an invalid state leading to a deadlock or crash.
+    def _after_fork(self, new_ident=None):
+        # Private!  Called by threading._after_fork().
         self._started._at_fork_reinit()
-        if is_alive:
+        if new_ident is not None:
+            # This thread is alive.
+            self._ident = new_ident
+            if self._handle is not None:
+                self._handle.after_fork_alive()
+                assert self._handle.ident == new_ident
             # bpo-42350: If the fork happens when the thread is already stopped
             # (ex: after threading._shutdown() has been called), _tstate_lock
             # is None. Do nothing in this case.
             if self._tstate_lock is not None:
                 self._tstate_lock._at_fork_reinit()
                 self._tstate_lock.acquire()
+            if self._join_lock is not None:
+                self._join_lock._at_fork_reinit()
         else:
-            # The thread isn't alive after fork: it doesn't have a tstate
+            # This thread isn't alive after fork: it doesn't have a tstate
             # anymore.
             self._is_stopped = True
             self._tstate_lock = None
+            self._join_lock = None
+            if self._handle is not None:
+                self._handle.after_fork_dead()
+                self._handle = None
 
     def __repr__(self):
         assert self._initialized, "Thread.__init__() was not called"
@@ -965,15 +993,18 @@ def start(self):
         if self._started.is_set():
             raise RuntimeError("threads can only be started once")
 
+        self._join_lock = _allocate_lock()
+
         with _active_limbo_lock:
             _limbo[self] = self
         try:
-            _start_new_thread(self._bootstrap, ())
+            # Start joinable thread
+            self._handle = _start_joinable_thread(self._bootstrap)
         except Exception:
             with _active_limbo_lock:
                 del _limbo[self]
             raise
-        self._started.wait()
+        self._started.wait()  # Will set ident and native_id
 
     def run(self):
         """Method representing the thread's activity.
@@ -1129,6 +1160,22 @@ def join(self, timeout=None):
             # historically .join(timeout=x) for x<0 has acted as if timeout=0
             self._wait_for_tstate_lock(timeout=max(timeout, 0))
 
+        if self._is_stopped:
+            self._join_os_thread()
+
+    def _join_os_thread(self):
+        join_lock = self._join_lock
+        if join_lock is None:
+            return
+        with join_lock:
+            # Calling join() multiple times would raise an exception
+            # in one of the callers.
+            if self._handle is not None:
+                self._handle.join()
+                self._handle = None
+                # No need to keep this around
+                self._join_lock = None
+
     def _wait_for_tstate_lock(self, block=True, timeout=-1):
         # Issue #18808: wait for the thread state to be gone.
         # At the end of the thread's life, after all knowledge of the thread
@@ -1208,7 +1255,10 @@ def is_alive(self):
         if self._is_stopped or not self._started.is_set():
             return False
         self._wait_for_tstate_lock(False)
-        return not self._is_stopped
+        if not self._is_stopped:
+            return True
+        self._join_os_thread()
+        return False
 
     @property
     def daemon(self):
@@ -1451,11 +1501,12 @@ def _stop(self):
         pass
 
     def is_alive(self):
-        assert not self._is_stopped and self._started.is_set()
-        return True
+        if not self._is_stopped and self._started.is_set():
+            return True
+        raise RuntimeError("thread is not alive")
 
     def join(self, timeout=None):
-        assert False, "cannot join a dummy thread"
+        raise RuntimeError("cannot join a dummy thread")
 
 
 # Global API functions
@@ -1559,7 +1610,7 @@ def _shutdown():
     # the main thread's tstate_lock - that won't happen until the interpreter
     # is nearly dead.  So we release it here.  Note that just calling _stop()
     # isn't enough:  other threads may already be waiting on _tstate_lock.
-    if _main_thread._is_stopped:
+    if _main_thread._is_stopped and _is_main_interpreter():
         # _shutdown() was already called
         return
 
@@ -1577,8 +1628,11 @@ def _shutdown():
         # The main thread isn't finished yet, so its thread state lock can't
         # have been released.
         assert tlock is not None
-        assert tlock.locked()
-        tlock.release()
+        if tlock.locked():
+            # It should have been released already by
+            # _PyInterpreterState_SetNotRunningMain(), but there may be
+            # embedders that aren't calling that yet.
+            tlock.release()
         _main_thread._stop()
     else:
         # bpo-1596321: _shutdown() must be called in the main thread.
@@ -1612,6 +1666,7 @@ def main_thread():
     In normal conditions, the main thread is the thread from which the
     Python interpreter was started.
     """
+    # XXX Figure this out for subinterpreters.  (See gh-75698.)
     return _main_thread
 
 # get thread-local implementation, either from the thread
@@ -1659,15 +1714,13 @@ def _after_fork():
             # Any lock/condition variable may be currently locked or in an
             # invalid state, so we reinitialize them.
             if thread is current:
-                # There is only one active thread. We reset the ident to
-                # its new value since it can have changed.
-                thread._reset_internal_locks(True)
+                # This is the one and only active thread.
                 ident = get_ident()
-                thread._ident = ident
+                thread._after_fork(new_ident=ident)
                 new_active[ident] = thread
             else:
                 # All the others are already stopped.
-                thread._reset_internal_locks(False)
+                thread._after_fork()
                 thread._stop()
 
         _limbo.clear()
diff --git a/Lib/timeit.py b/Lib/timeit.py
index 0cf8db67723a49..02cfafaf36e5d1 100755
--- a/Lib/timeit.py
+++ b/Lib/timeit.py
@@ -50,9 +50,9 @@
 """
 
 import gc
+import itertools
 import sys
 import time
-import itertools
 
 __all__ = ["Timer", "timeit", "repeat", "default_timer"]
 
@@ -77,9 +77,11 @@ def inner(_it, _timer{init}):
     return _t1 - _t0
 """
 
+
 def reindent(src, indent):
     """Helper to reindent a multi-line statement."""
-    return src.replace("\n", "\n" + " "*indent)
+    return src.replace("\n", "\n" + " " * indent)
+
 
 class Timer:
     """Class for timing execution speed of small code snippets.
@@ -166,7 +168,7 @@ def timeit(self, number=default_number):
 
         To be precise, this executes the setup statement once, and
         then returns the time it takes to execute the main statement
-        a number of times, as a float measured in seconds.  The
+        a number of times, as float seconds if using the default timer.   The
         argument is the number of times through the loop, defaulting
         to one million.  The main statement, the setup statement and
         the timer function to be used are passed to the constructor.
@@ -228,16 +230,19 @@ def autorange(self, callback=None):
                     return (number, time_taken)
             i *= 10
 
+
 def timeit(stmt="pass", setup="pass", timer=default_timer,
            number=default_number, globals=None):
     """Convenience function to create Timer object and call timeit method."""
     return Timer(stmt, setup, timer, globals).timeit(number)
 
+
 def repeat(stmt="pass", setup="pass", timer=default_timer,
            repeat=default_repeat, number=default_number, globals=None):
     """Convenience function to create Timer object and call repeat method."""
     return Timer(stmt, setup, timer, globals).repeat(repeat, number)
 
+
 def main(args=None, *, _wrap_timer=None):
     """Main program, used when run as a script.
 
@@ -269,7 +274,7 @@ def main(args=None, *, _wrap_timer=None):
 
     timer = default_timer
     stmt = "\n".join(args) or "pass"
-    number = 0 # auto-determine
+    number = 0  # auto-determine
     setup = []
     repeat = default_repeat
     verbose = 0
@@ -286,7 +291,7 @@ def main(args=None, *, _wrap_timer=None):
                 time_unit = a
             else:
                 print("Unrecognized unit. Please select nsec, usec, msec, or sec.",
-                    file=sys.stderr)
+                      file=sys.stderr)
                 return 2
         if o in ("-r", "--repeat"):
             repeat = int(a)
@@ -320,7 +325,7 @@ def callback(number, time_taken):
                 msg = "{num} loop{s} -> {secs:.{prec}g} secs"
                 plural = (number != 1)
                 print(msg.format(num=number, s='s' if plural else '',
-                                  secs=time_taken, prec=precision))
+                                 secs=time_taken, prec=precision))
         try:
             number, _ = t.autorange(callback)
         except:
@@ -371,5 +376,6 @@ def format_time(dt):
                                UserWarning, '', 0)
     return None
 
+
 if __name__ == "__main__":
     sys.exit(main())
diff --git a/Lib/tkinter/__init__.py b/Lib/tkinter/__init__.py
index bf0b3b92155938..124882420c255c 100644
--- a/Lib/tkinter/__init__.py
+++ b/Lib/tkinter/__init__.py
@@ -901,6 +901,85 @@ def bell(self, displayof=0):
         """Ring a display's bell."""
         self.tk.call(('bell',) + self._displayof(displayof))
 
+    def tk_busy_cget(self, option):
+        """Return the value of busy configuration option.
+
+        The widget must have been previously made busy by
+        tk_busy_hold().  Option may have any of the values accepted by
+        tk_busy_hold().
+        """
+        return self.tk.call('tk', 'busy', 'cget', self._w, '-'+option)
+    busy_cget = tk_busy_cget
+
+    def tk_busy_configure(self, cnf=None, **kw):
+        """Query or modify the busy configuration options.
+
+        The widget must have been previously made busy by
+        tk_busy_hold().  Options may have any of the values accepted by
+        tk_busy_hold().
+
+        Please note that the option database is referenced by the widget
+        name or class.  For example, if a Frame widget with name "frame"
+        is to be made busy, the busy cursor can be specified for it by
+        either call:
+
+            w.option_add('*frame.busyCursor', 'gumby')
+            w.option_add('*Frame.BusyCursor', 'gumby')
+        """
+        if kw:
+            cnf = _cnfmerge((cnf, kw))
+        elif cnf:
+            cnf = _cnfmerge(cnf)
+        if cnf is None:
+            return self._getconfigure(
+                        'tk', 'busy', 'configure', self._w)
+        if isinstance(cnf, str):
+            return self._getconfigure1(
+                        'tk', 'busy', 'configure', self._w, '-'+cnf)
+        self.tk.call('tk', 'busy', 'configure', self._w, *self._options(cnf))
+    busy_config = busy_configure = tk_busy_config = tk_busy_configure
+
+    def tk_busy_current(self, pattern=None):
+        """Return a list of widgets that are currently busy.
+
+        If a pattern is given, only busy widgets whose path names match
+        a pattern are returned.
+        """
+        return [self._nametowidget(x) for x in
+                self.tk.splitlist(self.tk.call(
+                   'tk', 'busy', 'current', pattern))]
+    busy_current = tk_busy_current
+
+    def tk_busy_forget(self):
+        """Make this widget no longer busy.
+
+        User events will again be received by the widget.
+        """
+        self.tk.call('tk', 'busy', 'forget', self._w)
+    busy_forget = tk_busy_forget
+
+    def tk_busy_hold(self, **kw):
+        """Make this widget appear busy.
+
+        The specified widget and its descendants will be blocked from
+        user interactions.  Normally update() should be called
+        immediately afterward to insure that the hold operation is in
+        effect before the application starts its processing.
+
+        The only supported configuration option is:
+
+            cursor: the cursor to be displayed when the widget is made
+                    busy.
+        """
+        self.tk.call('tk', 'busy', 'hold', self._w, *self._options(kw))
+    busy = busy_hold = tk_busy = tk_busy_hold
+
+    def tk_busy_status(self):
+        """Return True if the widget is busy, False otherwise."""
+        return self.tk.getboolean(self.tk.call(
+                'tk', 'busy', 'status', self._w))
+    busy_status = tk_busy_status
+
     # Clipboard handling:
     def clipboard_get(self, **kw):
         """Retrieve data from the clipboard on window's display.
@@ -1448,10 +1527,24 @@ def bind(self, sequence=None, func=None, add=None):
         return self._bind(('bind', self._w), sequence, func, add)
 
     def unbind(self, sequence, funcid=None):
-        """Unbind for this widget for event SEQUENCE  the
-        function identified with FUNCID."""
-        self.tk.call('bind', self._w, sequence, '')
-        if funcid:
+        """Unbind for this widget the event SEQUENCE.
+
+        If FUNCID is given, only unbind the function identified with FUNCID
+        and also delete the corresponding Tcl command.
+
+        Otherwise destroy the current binding for SEQUENCE, leaving SEQUENCE
+        unbound.
+        """
+        if funcid is None:
+            self.tk.call('bind', self._w, sequence, '')
+        else:
+            lines = self.tk.call('bind', self._w, sequence).split('\n')
+            prefix = f'if {{"[{funcid} '
+            keep = '\n'.join(line for line in lines
+                             if not line.startswith(prefix))
+            if not keep.strip():
+                keep = ''
+            self.tk.call('bind', self._w, sequence, keep)
             self.deletecommand(funcid)
 
     def bind_all(self, sequence=None, func=None, add=None):
@@ -1459,7 +1552,7 @@ def bind_all(self, sequence=None, func=None, add=None):
         An additional boolean parameter ADD specifies whether FUNC will
         be called additionally to the other bound function or whether
         it will replace the previous function. See bind for the return value."""
-        return self._bind(('bind', 'all'), sequence, func, add, 0)
+        return self._root()._bind(('bind', 'all'), sequence, func, add, True)
 
     def unbind_all(self, sequence):
         """Unbind for all widgets for event SEQUENCE all functions."""
@@ -1473,7 +1566,7 @@ def bind_class(self, className, sequence=None, func=None, add=None):
         whether it will replace the previous function. See bind for
         the return value."""
 
-        return self._bind(('bind', className), sequence, func, add, 0)
+        return self._root()._bind(('bind', className), sequence, func, add, True)
 
     def unbind_class(self, className, sequence):
         """Unbind for all widgets with bindtag CLASSNAME for event SEQUENCE
@@ -2817,7 +2910,7 @@ def canvasy(self, screeny, gridspacing=None):
 
     def coords(self, *args):
         """Return a list of coordinates for the item given in ARGS."""
-        # XXX Should use _flatten on args
+        args = _flatten(args)
         return [self.tk.getdouble(x) for x in
                            self.tk.splitlist(
                    self.tk.call((self._w, 'coords') + args))]
@@ -3636,25 +3729,28 @@ def compare(self, index1, op, index2):
         return self.tk.getboolean(self.tk.call(
             self._w, 'compare', index1, op, index2))
 
-    def count(self, index1, index2, *args): # new in Tk 8.5
+    def count(self, index1, index2, *options): # new in Tk 8.5
         """Counts the number of relevant things between the two indices.
-        If index1 is after index2, the result will be a negative number
+
+        If INDEX1 is after INDEX2, the result will be a negative number
         (and this holds for each of the possible options).
 
-        The actual items which are counted depends on the options given by
-        args. The result is a list of integers, one for the result of each
-        counting option given. Valid counting options are "chars",
+        The actual items which are counted depends on the options given.
+        The result is a tuple of integers, one for the result of each
+        counting option given, if more than one option is specified,
+        otherwise it is an integer. Valid counting options are "chars",
         "displaychars", "displayindices", "displaylines", "indices",
-        "lines", "xpixels" and "ypixels". There is an additional possible
+        "lines", "xpixels" and "ypixels". The default value, if no
+        option is specified, is "indices". There is an additional possible
         option "update", which if given then all subsequent options ensure
         that any possible out of date information is recalculated."""
-        args = ['-%s' % arg for arg in args]
-        args += [index1, index2]
-        res = self.tk.call(self._w, 'count', *args) or None
-        if res is not None and len(args) <= 3:
-            return (res, )
-        else:
-            return res
+        options = ['-%s' % arg for arg in options]
+        res = self.tk.call(self._w, 'count', *options, index1, index2)
+        if not isinstance(res, int):
+            res = self._getints(res)
+            if len(res) == 1:
+                res, = res
+        return res
 
     def debug(self, boolean=None):
         """Turn on the internal consistency checks of the B-Tree inside the text
@@ -4069,8 +4165,6 @@ def __init__(self, imgtype, name=None, cnf={}, master=None, **kw):
         elif kw: cnf = kw
         options = ()
         for k, v in cnf.items():
-            if callable(v):
-                v = self._register(v)
             options = options + ('-'+k, v)
         self.tk.call(('image', 'create', imgtype, name,) + options)
         self.name = name
@@ -4097,8 +4191,6 @@ def configure(self, **kw):
         for k, v in _cnfmerge(kw).items():
             if v is not None:
                 if k[-1] == '_': k = k[:-1]
-                if callable(v):
-                    v = self._register(v)
                 res = res + ('-'+k, v)
         self.tk.call((self.name, 'config') + res)
 
diff --git a/Lib/tkinter/tix.py b/Lib/tkinter/tix.py
deleted file mode 100644
index ce218265d4a824..00000000000000
--- a/Lib/tkinter/tix.py
+++ /dev/null
@@ -1,1948 +0,0 @@
-# Tix.py -- Tix widget wrappers.
-#
-#       For Tix, see http://tix.sourceforge.net
-#
-#       - Sudhir Shenoy (sshenoy@gol.com), Dec. 1995.
-#         based on an idea of Jean-Marc Lugrin (lugrin@ms.com)
-#
-# NOTE: In order to minimize changes to Tkinter.py, some of the code here
-#       (TixWidget.__init__) has been taken from Tkinter (Widget.__init__)
-#       and will break if there are major changes in Tkinter.
-#
-# The Tix widgets are represented by a class hierarchy in python with proper
-# inheritance of base classes.
-#
-# As a result after creating a 'w = StdButtonBox', I can write
-#              w.ok['text'] = 'Who Cares'
-#    or              w.ok['bg'] = w['bg']
-# or even       w.ok.invoke()
-# etc.
-#
-# Compare the demo tixwidgets.py to the original Tcl program and you will
-# appreciate the advantages.
-#
-# NOTE: This module is deprecated since Python 3.6.
-
-import os
-import warnings
-import tkinter
-from tkinter import *
-from tkinter import _cnfmerge
-
-warnings.warn(
-    'The Tix Tk extension is unmaintained, and the tkinter.tix wrapper module'
-    ' is deprecated in favor of tkinter.ttk',
-    DeprecationWarning,
-    stacklevel=2,
-    )
-
-# Some more constants (for consistency with Tkinter)
-WINDOW = 'window'
-TEXT = 'text'
-STATUS = 'status'
-IMMEDIATE = 'immediate'
-IMAGE = 'image'
-IMAGETEXT = 'imagetext'
-BALLOON = 'balloon'
-AUTO = 'auto'
-ACROSSTOP = 'acrosstop'
-
-# A few useful constants for the Grid widget
-ASCII = 'ascii'
-CELL = 'cell'
-COLUMN = 'column'
-DECREASING = 'decreasing'
-INCREASING = 'increasing'
-INTEGER = 'integer'
-MAIN = 'main'
-MAX = 'max'
-REAL = 'real'
-ROW = 'row'
-S_REGION = 's-region'
-X_REGION = 'x-region'
-Y_REGION = 'y-region'
-
-# Some constants used by Tkinter dooneevent()
-TCL_DONT_WAIT     = 1 << 1
-TCL_WINDOW_EVENTS = 1 << 2
-TCL_FILE_EVENTS   = 1 << 3
-TCL_TIMER_EVENTS  = 1 << 4
-TCL_IDLE_EVENTS   = 1 << 5
-TCL_ALL_EVENTS    = 0
-
-# BEWARE - this is implemented by copying some code from the Widget class
-#          in Tkinter (to override Widget initialization) and is therefore
-#          liable to break.
-
-# Could probably add this to Tkinter.Misc
-class tixCommand:
-    """The tix commands provide access to miscellaneous  elements
-    of  Tix's  internal state and the Tix application context.
-    Most of the information manipulated by these  commands pertains
-    to  the  application  as a whole, or to a screen or
-    display, rather than to a particular window.
-
-    This is a mixin class, assumed to be mixed to Tkinter.Tk
-    that supports the self.tk.call method.
-    """
-
-    def tix_addbitmapdir(self, directory):
-        """Tix maintains a list of directories under which
-        the  tix_getimage  and tix_getbitmap commands will
-        search for image files. The standard bitmap  directory
-        is $TIX_LIBRARY/bitmaps. The addbitmapdir command
-        adds directory into this list. By  using  this
-        command, the  image  files  of an applications can
-        also be located using the tix_getimage or tix_getbitmap
-        command.
-        """
-        return self.tk.call('tix', 'addbitmapdir', directory)
-
-    def tix_cget(self, option):
-        """Returns  the  current  value  of the configuration
-        option given by option. Option may be  any  of  the
-        options described in the CONFIGURATION OPTIONS section.
-        """
-        return self.tk.call('tix', 'cget', option)
-
-    def tix_configure(self, cnf=None, **kw):
-        """Query or modify the configuration options of the Tix application
-        context. If no option is specified, returns a dictionary all of the
-        available options.  If option is specified with no value, then the
-        command returns a list describing the one named option (this list
-        will be identical to the corresponding sublist of the value
-        returned if no option is specified).  If one or more option-value
-        pairs are specified, then the command modifies the given option(s)
-        to have the given value(s); in this case the command returns an
-        empty string. Option may be any of the configuration options.
-        """
-        # Copied from Tkinter.py
-        if kw:
-            cnf = _cnfmerge((cnf, kw))
-        elif cnf:
-            cnf = _cnfmerge(cnf)
-        if cnf is None:
-            return self._getconfigure('tix', 'configure')
-        if isinstance(cnf, str):
-            return self._getconfigure1('tix', 'configure', '-'+cnf)
-        return self.tk.call(('tix', 'configure') + self._options(cnf))
-
-    def tix_filedialog(self, dlgclass=None):
-        """Returns the file selection dialog that may be shared among
-        different calls from this application.  This command will create a
-        file selection dialog widget when it is called the first time. This
-        dialog will be returned by all subsequent calls to tix_filedialog.
-        An optional dlgclass parameter can be passed to specified what type
-        of file selection dialog widget is desired. Possible options are
-        tix FileSelectDialog or tixExFileSelectDialog.
-        """
-        if dlgclass is not None:
-            return self.tk.call('tix', 'filedialog', dlgclass)
-        else:
-            return self.tk.call('tix', 'filedialog')
-
-    def tix_getbitmap(self, name):
-        """Locates a bitmap file of the name name.xpm or name in one of the
-        bitmap directories (see the tix_addbitmapdir command above).  By
-        using tix_getbitmap, you can avoid hard coding the pathnames of the
-        bitmap files in your application. When successful, it returns the
-        complete pathname of the bitmap file, prefixed with the character
-        '@'.  The returned value can be used to configure the -bitmap
-        option of the TK and Tix widgets.
-        """
-        return self.tk.call('tix', 'getbitmap', name)
-
-    def tix_getimage(self, name):
-        """Locates an image file of the name name.xpm, name.xbm or name.ppm
-        in one of the bitmap directories (see the addbitmapdir command
-        above). If more than one file with the same name (but different
-        extensions) exist, then the image type is chosen according to the
-        depth of the X display: xbm images are chosen on monochrome
-        displays and color images are chosen on color displays. By using
-        tix_ getimage, you can avoid hard coding the pathnames of the
-        image files in your application. When successful, this command
-        returns the name of the newly created image, which can be used to
-        configure the -image option of the Tk and Tix widgets.
-        """
-        return self.tk.call('tix', 'getimage', name)
-
-    def tix_option_get(self, name):
-        """Gets  the options  maintained  by  the  Tix
-        scheme mechanism. Available options include:
-
-            active_bg       active_fg      bg
-            bold_font       dark1_bg       dark1_fg
-            dark2_bg        dark2_fg       disabled_fg
-            fg              fixed_font     font
-            inactive_bg     inactive_fg    input1_bg
-            input2_bg       italic_font    light1_bg
-            light1_fg       light2_bg      light2_fg
-            menu_font       output1_bg     output2_bg
-            select_bg       select_fg      selector
-            """
-        # could use self.tk.globalgetvar('tixOption', name)
-        return self.tk.call('tix', 'option', 'get', name)
-
-    def tix_resetoptions(self, newScheme, newFontSet, newScmPrio=None):
-        """Resets the scheme and fontset of the Tix application to
-        newScheme and newFontSet, respectively.  This affects only those
-        widgets created after this call. Therefore, it is best to call the
-        resetoptions command before the creation of any widgets in a Tix
-        application.
-
-        The optional parameter newScmPrio can be given to reset the
-        priority level of the Tk options set by the Tix schemes.
-
-        Because of the way Tk handles the X option database, after Tix has
-        been has imported and inited, it is not possible to reset the color
-        schemes and font sets using the tix config command.  Instead, the
-        tix_resetoptions command must be used.
-        """
-        if newScmPrio is not None:
-            return self.tk.call('tix', 'resetoptions', newScheme, newFontSet, newScmPrio)
-        else:
-            return self.tk.call('tix', 'resetoptions', newScheme, newFontSet)
-
-class Tk(tkinter.Tk, tixCommand):
-    """Toplevel widget of Tix which represents mostly the main window
-    of an application. It has an associated Tcl interpreter."""
-    def __init__(self, screenName=None, baseName=None, className='Tix'):
-        tkinter.Tk.__init__(self, screenName, baseName, className)
-        tixlib = os.environ.get('TIX_LIBRARY')
-        self.tk.eval('global auto_path; lappend auto_path [file dir [info nameof]]')
-        if tixlib is not None:
-            self.tk.eval('global auto_path; lappend auto_path {%s}' % tixlib)
-            self.tk.eval('global tcl_pkgPath; lappend tcl_pkgPath {%s}' % tixlib)
-        # Load Tix - this should work dynamically or statically
-        # If it's static, tcl/tix8.1/pkgIndex.tcl should have
-        #               'load {} Tix'
-        # If it's dynamic under Unix, tcl/tix8.1/pkgIndex.tcl should have
-        #               'load libtix8.1.8.3.so Tix'
-        self.tk.eval('package require Tix')
-
-    def destroy(self):
-        # For safety, remove the delete_window binding before destroy
-        self.protocol("WM_DELETE_WINDOW", "")
-        tkinter.Tk.destroy(self)
-
-# The Tix 'tixForm' geometry manager
-class Form:
-    """The Tix Form geometry manager
-
-    Widgets can be arranged by specifying attachments to other widgets.
-    See Tix documentation for complete details"""
-
-    def config(self, cnf={}, **kw):
-        self.tk.call('tixForm', self._w, *self._options(cnf, kw))
-
-    form = config
-
-    def __setitem__(self, key, value):
-        Form.form(self, {key: value})
-
-    def check(self):
-        return self.tk.call('tixForm', 'check', self._w)
-
-    def forget(self):
-        self.tk.call('tixForm', 'forget', self._w)
-
-    def grid(self, xsize=0, ysize=0):
-        if (not xsize) and (not ysize):
-            x = self.tk.call('tixForm', 'grid', self._w)
-            y = self.tk.splitlist(x)
-            z = ()
-            for x in y:
-                z = z + (self.tk.getint(x),)
-            return z
-        return self.tk.call('tixForm', 'grid', self._w, xsize, ysize)
-
-    def info(self, option=None):
-        if not option:
-            return self.tk.call('tixForm', 'info', self._w)
-        if option[0] != '-':
-            option = '-' + option
-        return self.tk.call('tixForm', 'info', self._w, option)
-
-    def slaves(self):
-        return [self._nametowidget(x) for x in
-                self.tk.splitlist(
-                       self.tk.call(
-                       'tixForm', 'slaves', self._w))]
-
-
-
-tkinter.Widget.__bases__ = tkinter.Widget.__bases__ + (Form,)
-
-class TixWidget(tkinter.Widget):
-    """A TixWidget class is used to package all (or most) Tix widgets.
-
-    Widget initialization is extended in two ways:
-       1) It is possible to give a list of options which must be part of
-       the creation command (so called Tix 'static' options). These cannot be
-       given as a 'config' command later.
-       2) It is possible to give the name of an existing TK widget. These are
-       child widgets created automatically by a Tix mega-widget. The Tk call
-       to create these widgets is therefore bypassed in TixWidget.__init__
-
-    Both options are for use by subclasses only.
-    """
-    def __init__ (self, master=None, widgetName=None,
-                static_options=None, cnf={}, kw={}):
-        # Merge keywords and dictionary arguments
-        if kw:
-            cnf = _cnfmerge((cnf, kw))
-        else:
-            cnf = _cnfmerge(cnf)
-
-        # Move static options into extra. static_options must be
-        # a list of keywords (or None).
-        extra=()
-
-        # 'options' is always a static option
-        if static_options:
-            static_options.append('options')
-        else:
-            static_options = ['options']
-
-        for k,v in list(cnf.items()):
-            if k in static_options:
-                extra = extra + ('-' + k, v)
-                del cnf[k]
-
-        self.widgetName = widgetName
-        self._setup(master, cnf)
-
-        # If widgetName is None, this is a dummy creation call where the
-        # corresponding Tk widget has already been created by Tix
-        if widgetName:
-            self.tk.call(widgetName, self._w, *extra)
-
-        # Non-static options - to be done via a 'config' command
-        if cnf:
-            Widget.config(self, cnf)
-
-        # Dictionary to hold subwidget names for easier access. We can't
-        # use the children list because the public Tix names may not be the
-        # same as the pathname component
-        self.subwidget_list = {}
-
-    # We set up an attribute access function so that it is possible to
-    # do w.ok['text'] = 'Hello' rather than w.subwidget('ok')['text'] = 'Hello'
-    # when w is a StdButtonBox.
-    # We can even do w.ok.invoke() because w.ok is subclassed from the
-    # Button class if you go through the proper constructors
-    def __getattr__(self, name):
-        if name in self.subwidget_list:
-            return self.subwidget_list[name]
-        raise AttributeError(name)
-
-    def set_silent(self, value):
-        """Set a variable without calling its action routine"""
-        self.tk.call('tixSetSilent', self._w, value)
-
-    def subwidget(self, name):
-        """Return the named subwidget (which must have been created by
-        the sub-class)."""
-        n = self._subwidget_name(name)
-        if not n:
-            raise TclError("Subwidget " + name + " not child of " + self._name)
-        # Remove header of name and leading dot
-        n = n[len(self._w)+1:]
-        return self._nametowidget(n)
-
-    def subwidgets_all(self):
-        """Return all subwidgets."""
-        names = self._subwidget_names()
-        if not names:
-            return []
-        retlist = []
-        for name in names:
-            name = name[len(self._w)+1:]
-            try:
-                retlist.append(self._nametowidget(name))
-            except:
-                # some of the widgets are unknown e.g. border in LabelFrame
-                pass
-        return retlist
-
-    def _subwidget_name(self,name):
-        """Get a subwidget name (returns a String, not a Widget !)"""
-        try:
-            return self.tk.call(self._w, 'subwidget', name)
-        except TclError:
-            return None
-
-    def _subwidget_names(self):
-        """Return the name of all subwidgets."""
-        try:
-            x = self.tk.call(self._w, 'subwidgets', '-all')
-            return self.tk.splitlist(x)
-        except TclError:
-            return None
-
-    def config_all(self, option, value):
-        """Set configuration options for all subwidgets (and self)."""
-        if option == '':
-            return
-        elif not isinstance(option, str):
-            option = repr(option)
-        if not isinstance(value, str):
-            value = repr(value)
-        names = self._subwidget_names()
-        for name in names:
-            self.tk.call(name, 'configure', '-' + option, value)
-    # These are missing from Tkinter
-    def image_create(self, imgtype, cnf={}, master=None, **kw):
-        if master is None:
-            master = self
-        if kw and cnf: cnf = _cnfmerge((cnf, kw))
-        elif kw: cnf = kw
-        options = ()
-        for k, v in cnf.items():
-            if callable(v):
-                v = self._register(v)
-            options = options + ('-'+k, v)
-        return master.tk.call(('image', 'create', imgtype,) + options)
-    def image_delete(self, imgname):
-        try:
-            self.tk.call('image', 'delete', imgname)
-        except TclError:
-            # May happen if the root was destroyed
-            pass
-
-# Subwidgets are child widgets created automatically by mega-widgets.
-# In python, we have to create these subwidgets manually to mirror their
-# existence in Tk/Tix.
-class TixSubWidget(TixWidget):
-    """Subwidget class.
-
-    This is used to mirror child widgets automatically created
-    by Tix/Tk as part of a mega-widget in Python (which is not informed
-    of this)"""
-
-    def __init__(self, master, name,
-               destroy_physically=1, check_intermediate=1):
-        if check_intermediate:
-            path = master._subwidget_name(name)
-            try:
-                path = path[len(master._w)+1:]
-                plist = path.split('.')
-            except:
-                plist = []
-
-        if not check_intermediate:
-            # immediate descendant
-            TixWidget.__init__(self, master, None, None, {'name' : name})
-        else:
-            # Ensure that the intermediate widgets exist
-            parent = master
-            for i in range(len(plist) - 1):
-                n = '.'.join(plist[:i+1])
-                try:
-                    w = master._nametowidget(n)
-                    parent = w
-                except KeyError:
-                    # Create the intermediate widget
-                    parent = TixSubWidget(parent, plist[i],
-                                          destroy_physically=0,
-                                          check_intermediate=0)
-            # The Tk widget name is in plist, not in name
-            if plist:
-                name = plist[-1]
-            TixWidget.__init__(self, parent, None, None, {'name' : name})
-        self.destroy_physically = destroy_physically
-
-    def destroy(self):
-        # For some widgets e.g., a NoteBook, when we call destructors,
-        # we must be careful not to destroy the frame widget since this
-        # also destroys the parent NoteBook thus leading to an exception
-        # in Tkinter when it finally calls Tcl to destroy the NoteBook
-        for c in list(self.children.values()): c.destroy()
-        if self._name in self.master.children:
-            del self.master.children[self._name]
-        if self._name in self.master.subwidget_list:
-            del self.master.subwidget_list[self._name]
-        if self.destroy_physically:
-            # This is bypassed only for a few widgets
-            self.tk.call('destroy', self._w)
-
-
-# Useful class to create a display style - later shared by many items.
-# Contributed by Steffen Kremser
-class DisplayStyle:
-    """DisplayStyle - handle configuration options shared by
-    (multiple) Display Items"""
-
-    def __init__(self, itemtype, cnf={}, *, master=None, **kw):
-        if master is None:
-            if 'refwindow' in kw:
-                master = kw['refwindow']
-            elif 'refwindow' in cnf:
-                master = cnf['refwindow']
-            else:
-                master = tkinter._get_default_root('create display style')
-        self.tk = master.tk
-        self.stylename = self.tk.call('tixDisplayStyle', itemtype,
-                            *self._options(cnf,kw) )
-
-    def __str__(self):
-        return self.stylename
-
-    def _options(self, cnf, kw):
-        if kw and cnf:
-            cnf = _cnfmerge((cnf, kw))
-        elif kw:
-            cnf = kw
-        opts = ()
-        for k, v in cnf.items():
-            opts = opts + ('-'+k, v)
-        return opts
-
-    def delete(self):
-        self.tk.call(self.stylename, 'delete')
-
-    def __setitem__(self,key,value):
-        self.tk.call(self.stylename, 'configure', '-%s'%key, value)
-
-    def config(self, cnf={}, **kw):
-        return self._getconfigure(
-            self.stylename, 'configure', *self._options(cnf,kw))
-
-    def __getitem__(self,key):
-        return self.tk.call(self.stylename, 'cget', '-%s'%key)
-
-
-######################################################
-### The Tix Widget classes - in alphabetical order ###
-######################################################
-
-class Balloon(TixWidget):
-    """Balloon help widget.
-
-    Subwidget       Class
-    ---------       -----
-    label           Label
-    message         Message"""
-
-    # FIXME: It should inherit -superclass tixShell
-    def __init__(self, master=None, cnf={}, **kw):
-        # static seem to be -installcolormap -initwait -statusbar -cursor
-        static = ['options', 'installcolormap', 'initwait', 'statusbar',
-                  'cursor']
-        TixWidget.__init__(self, master, 'tixBalloon', static, cnf, kw)
-        self.subwidget_list['label'] = _dummyLabel(self, 'label',
-                                                   destroy_physically=0)
-        self.subwidget_list['message'] = _dummyLabel(self, 'message',
-                                                     destroy_physically=0)
-
-    def bind_widget(self, widget, cnf={}, **kw):
-        """Bind balloon widget to another.
-        One balloon widget may be bound to several widgets at the same time"""
-        self.tk.call(self._w, 'bind', widget._w, *self._options(cnf, kw))
-
-    def unbind_widget(self, widget):
-        self.tk.call(self._w, 'unbind', widget._w)
-
-class ButtonBox(TixWidget):
-    """ButtonBox - A container for pushbuttons.
-    Subwidgets are the buttons added with the add method.
-    """
-    def __init__(self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixButtonBox',
-                           ['orientation', 'options'], cnf, kw)
-
-    def add(self, name, cnf={}, **kw):
-        """Add a button with given name to box."""
-
-        btn = self.tk.call(self._w, 'add', name, *self._options(cnf, kw))
-        self.subwidget_list[name] = _dummyButton(self, name)
-        return btn
-
-    def invoke(self, name):
-        if name in self.subwidget_list:
-            self.tk.call(self._w, 'invoke', name)
-
-class ComboBox(TixWidget):
-    """ComboBox - an Entry field with a dropdown menu. The user can select a
-    choice by either typing in the entry subwidget or selecting from the
-    listbox subwidget.
-
-    Subwidget       Class
-    ---------       -----
-    entry       Entry
-    arrow       Button
-    slistbox    ScrolledListBox
-    tick        Button
-    cross       Button : present if created with the fancy option"""
-
-    # FIXME: It should inherit -superclass tixLabelWidget
-    def __init__ (self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixComboBox',
-                           ['editable', 'dropdown', 'fancy', 'options'],
-                           cnf, kw)
-        self.subwidget_list['label'] = _dummyLabel(self, 'label')
-        self.subwidget_list['entry'] = _dummyEntry(self, 'entry')
-        self.subwidget_list['arrow'] = _dummyButton(self, 'arrow')
-        self.subwidget_list['slistbox'] = _dummyScrolledListBox(self,
-                                                                'slistbox')
-        try:
-            self.subwidget_list['tick'] = _dummyButton(self, 'tick')
-            self.subwidget_list['cross'] = _dummyButton(self, 'cross')
-        except TypeError:
-            # unavailable when -fancy not specified
-            pass
-
-    # align
-
-    def add_history(self, str):
-        self.tk.call(self._w, 'addhistory', str)
-
-    def append_history(self, str):
-        self.tk.call(self._w, 'appendhistory', str)
-
-    def insert(self, index, str):
-        self.tk.call(self._w, 'insert', index, str)
-
-    def pick(self, index):
-        self.tk.call(self._w, 'pick', index)
-
-class Control(TixWidget):
-    """Control - An entry field with value change arrows.  The user can
-    adjust the value by pressing the two arrow buttons or by entering
-    the value directly into the entry. The new value will be checked
-    against the user-defined upper and lower limits.
-
-    Subwidget       Class
-    ---------       -----
-    incr       Button
-    decr       Button
-    entry       Entry
-    label       Label"""
-
-    # FIXME: It should inherit -superclass tixLabelWidget
-    def __init__ (self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixControl', ['options'], cnf, kw)
-        self.subwidget_list['incr'] = _dummyButton(self, 'incr')
-        self.subwidget_list['decr'] = _dummyButton(self, 'decr')
-        self.subwidget_list['label'] = _dummyLabel(self, 'label')
-        self.subwidget_list['entry'] = _dummyEntry(self, 'entry')
-
-    def decrement(self):
-        self.tk.call(self._w, 'decr')
-
-    def increment(self):
-        self.tk.call(self._w, 'incr')
-
-    def invoke(self):
-        self.tk.call(self._w, 'invoke')
-
-    def update(self):
-        self.tk.call(self._w, 'update')
-
-class DirList(TixWidget):
-    """DirList - displays a list view of a directory, its previous
-    directories and its sub-directories. The user can choose one of
-    the directories displayed in the list or change to another directory.
-
-    Subwidget       Class
-    ---------       -----
-    hlist       HList
-    hsb              Scrollbar
-    vsb              Scrollbar"""
-
-    # FIXME: It should inherit -superclass tixScrolledHList
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixDirList', ['options'], cnf, kw)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-    def chdir(self, dir):
-        self.tk.call(self._w, 'chdir', dir)
-
-class DirTree(TixWidget):
-    """DirTree - Directory Listing in a hierarchical view.
-    Displays a tree view of a directory, its previous directories and its
-    sub-directories. The user can choose one of the directories displayed
-    in the list or change to another directory.
-
-    Subwidget       Class
-    ---------       -----
-    hlist           HList
-    hsb             Scrollbar
-    vsb             Scrollbar"""
-
-    # FIXME: It should inherit -superclass tixScrolledHList
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixDirTree', ['options'], cnf, kw)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-    def chdir(self, dir):
-        self.tk.call(self._w, 'chdir', dir)
-
-class DirSelectBox(TixWidget):
-    """DirSelectBox - Motif style file select box.
-    It is generally used for
-    the user to choose a file. FileSelectBox stores the files mostly
-    recently selected into a ComboBox widget so that they can be quickly
-    selected again.
-
-    Subwidget       Class
-    ---------       -----
-    selection       ComboBox
-    filter          ComboBox
-    dirlist         ScrolledListBox
-    filelist        ScrolledListBox"""
-
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixDirSelectBox', ['options'], cnf, kw)
-        self.subwidget_list['dirlist'] = _dummyDirList(self, 'dirlist')
-        self.subwidget_list['dircbx'] = _dummyFileComboBox(self, 'dircbx')
-
-class ExFileSelectBox(TixWidget):
-    """ExFileSelectBox - MS Windows style file select box.
-    It provides a convenient method for the user to select files.
-
-    Subwidget       Class
-    ---------       -----
-    cancel       Button
-    ok              Button
-    hidden       Checkbutton
-    types       ComboBox
-    dir              ComboBox
-    file       ComboBox
-    dirlist       ScrolledListBox
-    filelist       ScrolledListBox"""
-
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixExFileSelectBox', ['options'], cnf, kw)
-        self.subwidget_list['cancel'] = _dummyButton(self, 'cancel')
-        self.subwidget_list['ok'] = _dummyButton(self, 'ok')
-        self.subwidget_list['hidden'] = _dummyCheckbutton(self, 'hidden')
-        self.subwidget_list['types'] = _dummyComboBox(self, 'types')
-        self.subwidget_list['dir'] = _dummyComboBox(self, 'dir')
-        self.subwidget_list['dirlist'] = _dummyDirList(self, 'dirlist')
-        self.subwidget_list['file'] = _dummyComboBox(self, 'file')
-        self.subwidget_list['filelist'] = _dummyScrolledListBox(self, 'filelist')
-
-    def filter(self):
-        self.tk.call(self._w, 'filter')
-
-    def invoke(self):
-        self.tk.call(self._w, 'invoke')
-
-
-# Should inherit from a Dialog class
-class DirSelectDialog(TixWidget):
-    """The DirSelectDialog widget presents the directories in the file
-    system in a dialog window. The user can use this dialog window to
-    navigate through the file system to select the desired directory.
-
-    Subwidgets       Class
-    ----------       -----
-    dirbox       DirSelectDialog"""
-
-    # FIXME: It should inherit -superclass tixDialogShell
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixDirSelectDialog',
-                           ['options'], cnf, kw)
-        self.subwidget_list['dirbox'] = _dummyDirSelectBox(self, 'dirbox')
-        # cancel and ok buttons are missing
-
-    def popup(self):
-        self.tk.call(self._w, 'popup')
-
-    def popdown(self):
-        self.tk.call(self._w, 'popdown')
-
-
-# Should inherit from a Dialog class
-class ExFileSelectDialog(TixWidget):
-    """ExFileSelectDialog - MS Windows style file select dialog.
-    It provides a convenient method for the user to select files.
-
-    Subwidgets       Class
-    ----------       -----
-    fsbox       ExFileSelectBox"""
-
-    # FIXME: It should inherit -superclass tixDialogShell
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixExFileSelectDialog',
-                           ['options'], cnf, kw)
-        self.subwidget_list['fsbox'] = _dummyExFileSelectBox(self, 'fsbox')
-
-    def popup(self):
-        self.tk.call(self._w, 'popup')
-
-    def popdown(self):
-        self.tk.call(self._w, 'popdown')
-
-class FileSelectBox(TixWidget):
-    """ExFileSelectBox - Motif style file select box.
-    It is generally used for
-    the user to choose a file. FileSelectBox stores the files mostly
-    recently selected into a ComboBox widget so that they can be quickly
-    selected again.
-
-    Subwidget       Class
-    ---------       -----
-    selection       ComboBox
-    filter          ComboBox
-    dirlist         ScrolledListBox
-    filelist        ScrolledListBox"""
-
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixFileSelectBox', ['options'], cnf, kw)
-        self.subwidget_list['dirlist'] = _dummyScrolledListBox(self, 'dirlist')
-        self.subwidget_list['filelist'] = _dummyScrolledListBox(self, 'filelist')
-        self.subwidget_list['filter'] = _dummyComboBox(self, 'filter')
-        self.subwidget_list['selection'] = _dummyComboBox(self, 'selection')
-
-    def apply_filter(self):              # name of subwidget is same as command
-        self.tk.call(self._w, 'filter')
-
-    def invoke(self):
-        self.tk.call(self._w, 'invoke')
-
-# Should inherit from a Dialog class
-class FileSelectDialog(TixWidget):
-    """FileSelectDialog - Motif style file select dialog.
-
-    Subwidgets       Class
-    ----------       -----
-    btns       StdButtonBox
-    fsbox       FileSelectBox"""
-
-    # FIXME: It should inherit -superclass tixStdDialogShell
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixFileSelectDialog',
-                           ['options'], cnf, kw)
-        self.subwidget_list['btns'] = _dummyStdButtonBox(self, 'btns')
-        self.subwidget_list['fsbox'] = _dummyFileSelectBox(self, 'fsbox')
-
-    def popup(self):
-        self.tk.call(self._w, 'popup')
-
-    def popdown(self):
-        self.tk.call(self._w, 'popdown')
-
-class FileEntry(TixWidget):
-    """FileEntry - Entry field with button that invokes a FileSelectDialog.
-    The user can type in the filename manually. Alternatively, the user can
-    press the button widget that sits next to the entry, which will bring
-    up a file selection dialog.
-
-    Subwidgets       Class
-    ----------       -----
-    button       Button
-    entry       Entry"""
-
-    # FIXME: It should inherit -superclass tixLabelWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixFileEntry',
-                           ['dialogtype', 'options'], cnf, kw)
-        self.subwidget_list['button'] = _dummyButton(self, 'button')
-        self.subwidget_list['entry'] = _dummyEntry(self, 'entry')
-
-    def invoke(self):
-        self.tk.call(self._w, 'invoke')
-
-    def file_dialog(self):
-        # FIXME: return python object
-        pass
-
-class HList(TixWidget, XView, YView):
-    """HList - Hierarchy display  widget can be used to display any data
-    that have a hierarchical structure, for example, file system directory
-    trees. The list entries are indented and connected by branch lines
-    according to their places in the hierarchy.
-
-    Subwidgets - None"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixHList',
-                           ['columns', 'options'], cnf, kw)
-
-    def add(self, entry, cnf={}, **kw):
-        return self.tk.call(self._w, 'add', entry, *self._options(cnf, kw))
-
-    def add_child(self, parent=None, cnf={}, **kw):
-        if parent is None:
-            parent = ''
-        return self.tk.call(
-                     self._w, 'addchild', parent, *self._options(cnf, kw))
-
-    def anchor_set(self, entry):
-        self.tk.call(self._w, 'anchor', 'set', entry)
-
-    def anchor_clear(self):
-        self.tk.call(self._w, 'anchor', 'clear')
-
-    def column_width(self, col=0, width=None, chars=None):
-        if not chars:
-            return self.tk.call(self._w, 'column', 'width', col, width)
-        else:
-            return self.tk.call(self._w, 'column', 'width', col,
-                                '-char', chars)
-
-    def delete_all(self):
-        self.tk.call(self._w, 'delete', 'all')
-
-    def delete_entry(self, entry):
-        self.tk.call(self._w, 'delete', 'entry', entry)
-
-    def delete_offsprings(self, entry):
-        self.tk.call(self._w, 'delete', 'offsprings', entry)
-
-    def delete_siblings(self, entry):
-        self.tk.call(self._w, 'delete', 'siblings', entry)
-
-    def dragsite_set(self, index):
-        self.tk.call(self._w, 'dragsite', 'set', index)
-
-    def dragsite_clear(self):
-        self.tk.call(self._w, 'dragsite', 'clear')
-
-    def dropsite_set(self, index):
-        self.tk.call(self._w, 'dropsite', 'set', index)
-
-    def dropsite_clear(self):
-        self.tk.call(self._w, 'dropsite', 'clear')
-
-    def header_create(self, col, cnf={}, **kw):
-        self.tk.call(self._w, 'header', 'create', col, *self._options(cnf, kw))
-
-    def header_configure(self, col, cnf={}, **kw):
-        if cnf is None:
-            return self._getconfigure(self._w, 'header', 'configure', col)
-        self.tk.call(self._w, 'header', 'configure', col,
-                     *self._options(cnf, kw))
-
-    def header_cget(self,  col, opt):
-        return self.tk.call(self._w, 'header', 'cget', col, opt)
-
-    def header_exists(self,  col):
-        # A workaround to Tix library bug (issue #25464).
-        # The documented command is "exists", but only erroneous "exist" is
-        # accepted.
-        return self.tk.getboolean(self.tk.call(self._w, 'header', 'exist', col))
-    header_exist = header_exists
-
-    def header_delete(self, col):
-        self.tk.call(self._w, 'header', 'delete', col)
-
-    def header_size(self, col):
-        return self.tk.call(self._w, 'header', 'size', col)
-
-    def hide_entry(self, entry):
-        self.tk.call(self._w, 'hide', 'entry', entry)
-
-    def indicator_create(self, entry, cnf={}, **kw):
-        self.tk.call(
-              self._w, 'indicator', 'create', entry, *self._options(cnf, kw))
-
-    def indicator_configure(self, entry, cnf={}, **kw):
-        if cnf is None:
-            return self._getconfigure(
-                self._w, 'indicator', 'configure', entry)
-        self.tk.call(
-              self._w, 'indicator', 'configure', entry, *self._options(cnf, kw))
-
-    def indicator_cget(self,  entry, opt):
-        return self.tk.call(self._w, 'indicator', 'cget', entry, opt)
-
-    def indicator_exists(self,  entry):
-        return self.tk.call (self._w, 'indicator', 'exists', entry)
-
-    def indicator_delete(self, entry):
-        self.tk.call(self._w, 'indicator', 'delete', entry)
-
-    def indicator_size(self, entry):
-        return self.tk.call(self._w, 'indicator', 'size', entry)
-
-    def info_anchor(self):
-        return self.tk.call(self._w, 'info', 'anchor')
-
-    def info_bbox(self, entry):
-        return self._getints(
-                self.tk.call(self._w, 'info', 'bbox', entry)) or None
-
-    def info_children(self, entry=None):
-        c = self.tk.call(self._w, 'info', 'children', entry)
-        return self.tk.splitlist(c)
-
-    def info_data(self, entry):
-        return self.tk.call(self._w, 'info', 'data', entry)
-
-    def info_dragsite(self):
-        return self.tk.call(self._w, 'info', 'dragsite')
-
-    def info_dropsite(self):
-        return self.tk.call(self._w, 'info', 'dropsite')
-
-    def info_exists(self, entry):
-        return self.tk.call(self._w, 'info', 'exists', entry)
-
-    def info_hidden(self, entry):
-        return self.tk.call(self._w, 'info', 'hidden', entry)
-
-    def info_next(self, entry):
-        return self.tk.call(self._w, 'info', 'next', entry)
-
-    def info_parent(self, entry):
-        return self.tk.call(self._w, 'info', 'parent', entry)
-
-    def info_prev(self, entry):
-        return self.tk.call(self._w, 'info', 'prev', entry)
-
-    def info_selection(self):
-        c = self.tk.call(self._w, 'info', 'selection')
-        return self.tk.splitlist(c)
-
-    def item_cget(self, entry, col, opt):
-        return self.tk.call(self._w, 'item', 'cget', entry, col, opt)
-
-    def item_configure(self, entry, col, cnf={}, **kw):
-        if cnf is None:
-            return self._getconfigure(self._w, 'item', 'configure', entry, col)
-        self.tk.call(self._w, 'item', 'configure', entry, col,
-              *self._options(cnf, kw))
-
-    def item_create(self, entry, col, cnf={}, **kw):
-        self.tk.call(
-              self._w, 'item', 'create', entry, col, *self._options(cnf, kw))
-
-    def item_exists(self, entry, col):
-        return self.tk.call(self._w, 'item', 'exists', entry, col)
-
-    def item_delete(self, entry, col):
-        self.tk.call(self._w, 'item', 'delete', entry, col)
-
-    def entrycget(self, entry, opt):
-        return self.tk.call(self._w, 'entrycget', entry, opt)
-
-    def entryconfigure(self, entry, cnf={}, **kw):
-        if cnf is None:
-            return self._getconfigure(self._w, 'entryconfigure', entry)
-        self.tk.call(self._w, 'entryconfigure', entry,
-              *self._options(cnf, kw))
-
-    def nearest(self, y):
-        return self.tk.call(self._w, 'nearest', y)
-
-    def see(self, entry):
-        self.tk.call(self._w, 'see', entry)
-
-    def selection_clear(self, cnf={}, **kw):
-        self.tk.call(self._w, 'selection', 'clear', *self._options(cnf, kw))
-
-    def selection_includes(self, entry):
-        return self.tk.call(self._w, 'selection', 'includes', entry)
-
-    def selection_set(self, first, last=None):
-        self.tk.call(self._w, 'selection', 'set', first, last)
-
-    def show_entry(self, entry):
-        return self.tk.call(self._w, 'show', 'entry', entry)
-
-class InputOnly(TixWidget):
-    """InputOnly - Invisible widget. Unix only.
-
-    Subwidgets - None"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixInputOnly', None, cnf, kw)
-
-class LabelEntry(TixWidget):
-    """LabelEntry - Entry field with label. Packages an entry widget
-    and a label into one mega widget. It can be used to simplify the creation
-    of ``entry-form'' type of interface.
-
-    Subwidgets       Class
-    ----------       -----
-    label       Label
-    entry       Entry"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixLabelEntry',
-                           ['labelside','options'], cnf, kw)
-        self.subwidget_list['label'] = _dummyLabel(self, 'label')
-        self.subwidget_list['entry'] = _dummyEntry(self, 'entry')
-
-class LabelFrame(TixWidget):
-    """LabelFrame - Labelled Frame container. Packages a frame widget
-    and a label into one mega widget. To create widgets inside a
-    LabelFrame widget, one creates the new widgets relative to the
-    frame subwidget and manage them inside the frame subwidget.
-
-    Subwidgets       Class
-    ----------       -----
-    label       Label
-    frame       Frame"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixLabelFrame',
-                           ['labelside','options'], cnf, kw)
-        self.subwidget_list['label'] = _dummyLabel(self, 'label')
-        self.subwidget_list['frame'] = _dummyFrame(self, 'frame')
-
-
-class ListNoteBook(TixWidget):
-    """A ListNoteBook widget is very similar to the TixNoteBook widget:
-    it can be used to display many windows in a limited space using a
-    notebook metaphor. The notebook is divided into a stack of pages
-    (windows). At one time only one of these pages can be shown.
-    The user can navigate through these pages by
-    choosing the name of the desired page in the hlist subwidget."""
-
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixListNoteBook', ['options'], cnf, kw)
-        # Is this necessary? It's not an exposed subwidget in Tix.
-        self.subwidget_list['pane'] = _dummyPanedWindow(self, 'pane',
-                                                        destroy_physically=0)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['shlist'] = _dummyScrolledHList(self, 'shlist')
-
-    def add(self, name, cnf={}, **kw):
-        self.tk.call(self._w, 'add', name, *self._options(cnf, kw))
-        self.subwidget_list[name] = TixSubWidget(self, name)
-        return self.subwidget_list[name]
-
-    def page(self, name):
-        return self.subwidget(name)
-
-    def pages(self):
-        # Can't call subwidgets_all directly because we don't want .nbframe
-        names = self.tk.splitlist(self.tk.call(self._w, 'pages'))
-        ret = []
-        for x in names:
-            ret.append(self.subwidget(x))
-        return ret
-
-    def raise_page(self, name):              # raise is a python keyword
-        self.tk.call(self._w, 'raise', name)
-
-class Meter(TixWidget):
-    """The Meter widget can be used to show the progress of a background
-    job which may take a long time to execute.
-    """
-
-    def __init__(self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixMeter',
-                           ['options'], cnf, kw)
-
-class NoteBook(TixWidget):
-    """NoteBook - Multi-page container widget (tabbed notebook metaphor).
-
-    Subwidgets       Class
-    ----------       -----
-    nbframe       NoteBookFrame
-    <pages>       page widgets added dynamically with the add method"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self,master,'tixNoteBook', ['options'], cnf, kw)
-        self.subwidget_list['nbframe'] = TixSubWidget(self, 'nbframe',
-                                                      destroy_physically=0)
-
-    def add(self, name, cnf={}, **kw):
-        self.tk.call(self._w, 'add', name, *self._options(cnf, kw))
-        self.subwidget_list[name] = TixSubWidget(self, name)
-        return self.subwidget_list[name]
-
-    def delete(self, name):
-        self.tk.call(self._w, 'delete', name)
-        self.subwidget_list[name].destroy()
-        del self.subwidget_list[name]
-
-    def page(self, name):
-        return self.subwidget(name)
-
-    def pages(self):
-        # Can't call subwidgets_all directly because we don't want .nbframe
-        names = self.tk.splitlist(self.tk.call(self._w, 'pages'))
-        ret = []
-        for x in names:
-            ret.append(self.subwidget(x))
-        return ret
-
-    def raise_page(self, name):              # raise is a python keyword
-        self.tk.call(self._w, 'raise', name)
-
-    def raised(self):
-        return self.tk.call(self._w, 'raised')
-
-class NoteBookFrame(TixWidget):
-    # FIXME: This is dangerous to expose to be called on its own.
-    pass
-
-class OptionMenu(TixWidget):
-    """OptionMenu - creates a menu button of options.
-
-    Subwidget       Class
-    ---------       -----
-    menubutton      Menubutton
-    menu            Menu"""
-
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixOptionMenu', ['options'], cnf, kw)
-        self.subwidget_list['menubutton'] = _dummyMenubutton(self, 'menubutton')
-        self.subwidget_list['menu'] = _dummyMenu(self, 'menu')
-
-    def add_command(self, name, cnf={}, **kw):
-        self.tk.call(self._w, 'add', 'command', name, *self._options(cnf, kw))
-
-    def add_separator(self, name, cnf={}, **kw):
-        self.tk.call(self._w, 'add', 'separator', name, *self._options(cnf, kw))
-
-    def delete(self, name):
-        self.tk.call(self._w, 'delete', name)
-
-    def disable(self, name):
-        self.tk.call(self._w, 'disable', name)
-
-    def enable(self, name):
-        self.tk.call(self._w, 'enable', name)
-
-class PanedWindow(TixWidget):
-    """PanedWindow - Multi-pane container widget
-    allows the user to interactively manipulate the sizes of several
-    panes. The panes can be arranged either vertically or horizontally.The
-    user changes the sizes of the panes by dragging the resize handle
-    between two panes.
-
-    Subwidgets       Class
-    ----------       -----
-    <panes>       g/p widgets added dynamically with the add method."""
-
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixPanedWindow', ['orientation', 'options'], cnf, kw)
-
-    # add delete forget panecget paneconfigure panes setsize
-    def add(self, name, cnf={}, **kw):
-        self.tk.call(self._w, 'add', name, *self._options(cnf, kw))
-        self.subwidget_list[name] = TixSubWidget(self, name,
-                                                 check_intermediate=0)
-        return self.subwidget_list[name]
-
-    def delete(self, name):
-        self.tk.call(self._w, 'delete', name)
-        self.subwidget_list[name].destroy()
-        del self.subwidget_list[name]
-
-    def forget(self, name):
-        self.tk.call(self._w, 'forget', name)
-
-    def panecget(self,  entry, opt):
-        return self.tk.call(self._w, 'panecget', entry, opt)
-
-    def paneconfigure(self, entry, cnf={}, **kw):
-        if cnf is None:
-            return self._getconfigure(self._w, 'paneconfigure', entry)
-        self.tk.call(self._w, 'paneconfigure', entry, *self._options(cnf, kw))
-
-    def panes(self):
-        names = self.tk.splitlist(self.tk.call(self._w, 'panes'))
-        return [self.subwidget(x) for x in names]
-
-class PopupMenu(TixWidget):
-    """PopupMenu widget can be used as a replacement of the tk_popup command.
-    The advantage of the Tix PopupMenu widget is it requires less application
-    code to manipulate.
-
-
-    Subwidgets       Class
-    ----------       -----
-    menubutton       Menubutton
-    menu       Menu"""
-
-    # FIXME: It should inherit -superclass tixShell
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixPopupMenu', ['options'], cnf, kw)
-        self.subwidget_list['menubutton'] = _dummyMenubutton(self, 'menubutton')
-        self.subwidget_list['menu'] = _dummyMenu(self, 'menu')
-
-    def bind_widget(self, widget):
-        self.tk.call(self._w, 'bind', widget._w)
-
-    def unbind_widget(self, widget):
-        self.tk.call(self._w, 'unbind', widget._w)
-
-    def post_widget(self, widget, x, y):
-        self.tk.call(self._w, 'post', widget._w, x, y)
-
-class ResizeHandle(TixWidget):
-    """Internal widget to draw resize handles on Scrolled widgets."""
-    def __init__(self, master, cnf={}, **kw):
-        # There seems to be a Tix bug rejecting the configure method
-        # Let's try making the flags -static
-        flags = ['options', 'command', 'cursorfg', 'cursorbg',
-                 'handlesize', 'hintcolor', 'hintwidth',
-                 'x', 'y']
-        # In fact, x y height width are configurable
-        TixWidget.__init__(self, master, 'tixResizeHandle',
-                           flags, cnf, kw)
-
-    def attach_widget(self, widget):
-        self.tk.call(self._w, 'attachwidget', widget._w)
-
-    def detach_widget(self, widget):
-        self.tk.call(self._w, 'detachwidget', widget._w)
-
-    def hide(self, widget):
-        self.tk.call(self._w, 'hide', widget._w)
-
-    def show(self, widget):
-        self.tk.call(self._w, 'show', widget._w)
-
-class ScrolledHList(TixWidget):
-    """ScrolledHList - HList with automatic scrollbars."""
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixScrolledHList', ['options'],
-                           cnf, kw)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class ScrolledListBox(TixWidget):
-    """ScrolledListBox - Listbox with automatic scrollbars."""
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixScrolledListBox', ['options'], cnf, kw)
-        self.subwidget_list['listbox'] = _dummyListbox(self, 'listbox')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class ScrolledText(TixWidget):
-    """ScrolledText - Text with automatic scrollbars."""
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixScrolledText', ['options'], cnf, kw)
-        self.subwidget_list['text'] = _dummyText(self, 'text')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class ScrolledTList(TixWidget):
-    """ScrolledTList - TList with automatic scrollbars."""
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixScrolledTList', ['options'],
-                           cnf, kw)
-        self.subwidget_list['tlist'] = _dummyTList(self, 'tlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class ScrolledWindow(TixWidget):
-    """ScrolledWindow - Window with automatic scrollbars."""
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixScrolledWindow', ['options'], cnf, kw)
-        self.subwidget_list['window'] = _dummyFrame(self, 'window')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class Select(TixWidget):
-    """Select - Container of button subwidgets. It can be used to provide
-    radio-box or check-box style of selection options for the user.
-
-    Subwidgets are buttons added dynamically using the add method."""
-
-    # FIXME: It should inherit -superclass tixLabelWidget
-    def __init__(self, master, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixSelect',
-                           ['allowzero', 'radio', 'orientation', 'labelside',
-                            'options'],
-                           cnf, kw)
-        self.subwidget_list['label'] = _dummyLabel(self, 'label')
-
-    def add(self, name, cnf={}, **kw):
-        self.tk.call(self._w, 'add', name, *self._options(cnf, kw))
-        self.subwidget_list[name] = _dummyButton(self, name)
-        return self.subwidget_list[name]
-
-    def invoke(self, name):
-        self.tk.call(self._w, 'invoke', name)
-
-class Shell(TixWidget):
-    """Toplevel window.
-
-    Subwidgets - None"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixShell', ['options', 'title'], cnf, kw)
-
-class DialogShell(TixWidget):
-    """Toplevel window, with popup popdown and center methods.
-    It tells the window manager that it is a dialog window and should be
-    treated specially. The exact treatment depends on the treatment of
-    the window manager.
-
-    Subwidgets - None"""
-
-    # FIXME: It should inherit from  Shell
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master,
-                           'tixDialogShell',
-                           ['options', 'title', 'mapped',
-                            'minheight', 'minwidth',
-                            'parent', 'transient'], cnf, kw)
-
-    def popdown(self):
-        self.tk.call(self._w, 'popdown')
-
-    def popup(self):
-        self.tk.call(self._w, 'popup')
-
-    def center(self):
-        self.tk.call(self._w, 'center')
-
-class StdButtonBox(TixWidget):
-    """StdButtonBox - Standard Button Box (OK, Apply, Cancel and Help) """
-
-    def __init__(self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixStdButtonBox',
-                           ['orientation', 'options'], cnf, kw)
-        self.subwidget_list['ok'] = _dummyButton(self, 'ok')
-        self.subwidget_list['apply'] = _dummyButton(self, 'apply')
-        self.subwidget_list['cancel'] = _dummyButton(self, 'cancel')
-        self.subwidget_list['help'] = _dummyButton(self, 'help')
-
-    def invoke(self, name):
-        if name in self.subwidget_list:
-            self.tk.call(self._w, 'invoke', name)
-
-class TList(TixWidget, XView, YView):
-    """TList - Hierarchy display widget which can be
-    used to display data in a tabular format. The list entries of a TList
-    widget are similar to the entries in the Tk listbox widget. The main
-    differences are (1) the TList widget can display the list entries in a
-    two dimensional format and (2) you can use graphical images as well as
-    multiple colors and fonts for the list entries.
-
-    Subwidgets - None"""
-
-    def __init__ (self,master=None,cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixTList', ['options'], cnf, kw)
-
-    def active_set(self, index):
-        self.tk.call(self._w, 'active', 'set', index)
-
-    def active_clear(self):
-        self.tk.call(self._w, 'active', 'clear')
-
-    def anchor_set(self, index):
-        self.tk.call(self._w, 'anchor', 'set', index)
-
-    def anchor_clear(self):
-        self.tk.call(self._w, 'anchor', 'clear')
-
-    def delete(self, from_, to=None):
-        self.tk.call(self._w, 'delete', from_, to)
-
-    def dragsite_set(self, index):
-        self.tk.call(self._w, 'dragsite', 'set', index)
-
-    def dragsite_clear(self):
-        self.tk.call(self._w, 'dragsite', 'clear')
-
-    def dropsite_set(self, index):
-        self.tk.call(self._w, 'dropsite', 'set', index)
-
-    def dropsite_clear(self):
-        self.tk.call(self._w, 'dropsite', 'clear')
-
-    def insert(self, index, cnf={}, **kw):
-        self.tk.call(self._w, 'insert', index, *self._options(cnf, kw))
-
-    def info_active(self):
-        return self.tk.call(self._w, 'info', 'active')
-
-    def info_anchor(self):
-        return self.tk.call(self._w, 'info', 'anchor')
-
-    def info_down(self, index):
-        return self.tk.call(self._w, 'info', 'down', index)
-
-    def info_left(self, index):
-        return self.tk.call(self._w, 'info', 'left', index)
-
-    def info_right(self, index):
-        return self.tk.call(self._w, 'info', 'right', index)
-
-    def info_selection(self):
-        c = self.tk.call(self._w, 'info', 'selection')
-        return self.tk.splitlist(c)
-
-    def info_size(self):
-        return self.tk.call(self._w, 'info', 'size')
-
-    def info_up(self, index):
-        return self.tk.call(self._w, 'info', 'up', index)
-
-    def nearest(self, x, y):
-        return self.tk.call(self._w, 'nearest', x, y)
-
-    def see(self, index):
-        self.tk.call(self._w, 'see', index)
-
-    def selection_clear(self, cnf={}, **kw):
-        self.tk.call(self._w, 'selection', 'clear', *self._options(cnf, kw))
-
-    def selection_includes(self, index):
-        return self.tk.call(self._w, 'selection', 'includes', index)
-
-    def selection_set(self, first, last=None):
-        self.tk.call(self._w, 'selection', 'set', first, last)
-
-class Tree(TixWidget):
-    """Tree - The tixTree widget can be used to display hierarchical
-    data in a tree form. The user can adjust
-    the view of the tree by opening or closing parts of the tree."""
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixTree',
-                           ['options'], cnf, kw)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-    def autosetmode(self):
-        '''This command calls the setmode method for all the entries in this
-     Tree widget: if an entry has no child entries, its mode is set to
-     none. Otherwise, if the entry has any hidden child entries, its mode is
-     set to open; otherwise its mode is set to close.'''
-        self.tk.call(self._w, 'autosetmode')
-
-    def close(self, entrypath):
-        '''Close the entry given by entryPath if its mode is close.'''
-        self.tk.call(self._w, 'close', entrypath)
-
-    def getmode(self, entrypath):
-        '''Returns the current mode of the entry given by entryPath.'''
-        return self.tk.call(self._w, 'getmode', entrypath)
-
-    def open(self, entrypath):
-        '''Open the entry given by entryPath if its mode is open.'''
-        self.tk.call(self._w, 'open', entrypath)
-
-    def setmode(self, entrypath, mode='none'):
-        '''This command is used to indicate whether the entry given by
-     entryPath has children entries and whether the children are visible. mode
-     must be one of open, close or none. If mode is set to open, a (+)
-     indicator is drawn next the entry. If mode is set to close, a (-)
-     indicator is drawn next the entry. If mode is set to none, no
-     indicators will be drawn for this entry. The default mode is none. The
-     open mode indicates the entry has hidden children and this entry can be
-     opened by the user. The close mode indicates that all the children of the
-     entry are now visible and the entry can be closed by the user.'''
-        self.tk.call(self._w, 'setmode', entrypath, mode)
-
-
-# Could try subclassing Tree for CheckList - would need another arg to init
-class CheckList(TixWidget):
-    """The CheckList widget
-    displays a list of items to be selected by the user. CheckList acts
-    similarly to the Tk checkbutton or radiobutton widgets, except it is
-    capable of handling many more items than checkbuttons or radiobuttons.
-    """
-    # FIXME: It should inherit -superclass tixTree
-    def __init__(self, master=None, cnf={}, **kw):
-        TixWidget.__init__(self, master, 'tixCheckList',
-                           ['options', 'radio'], cnf, kw)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-    def autosetmode(self):
-        '''This command calls the setmode method for all the entries in this
-     Tree widget: if an entry has no child entries, its mode is set to
-     none. Otherwise, if the entry has any hidden child entries, its mode is
-     set to open; otherwise its mode is set to close.'''
-        self.tk.call(self._w, 'autosetmode')
-
-    def close(self, entrypath):
-        '''Close the entry given by entryPath if its mode is close.'''
-        self.tk.call(self._w, 'close', entrypath)
-
-    def getmode(self, entrypath):
-        '''Returns the current mode of the entry given by entryPath.'''
-        return self.tk.call(self._w, 'getmode', entrypath)
-
-    def open(self, entrypath):
-        '''Open the entry given by entryPath if its mode is open.'''
-        self.tk.call(self._w, 'open', entrypath)
-
-    def getselection(self, mode='on'):
-        '''Returns a list of items whose status matches status. If status is
-     not specified, the list of items in the "on" status will be returned.
-     Mode can be on, off, default'''
-        return self.tk.splitlist(self.tk.call(self._w, 'getselection', mode))
-
-    def getstatus(self, entrypath):
-        '''Returns the current status of entryPath.'''
-        return self.tk.call(self._w, 'getstatus', entrypath)
-
-    def setstatus(self, entrypath, mode='on'):
-        '''Sets the status of entryPath to be status. A bitmap will be
-     displayed next to the entry its status is on, off or default.'''
-        self.tk.call(self._w, 'setstatus', entrypath, mode)
-
-
-###########################################################################
-### The subclassing below is used to instantiate the subwidgets in each ###
-### mega widget. This allows us to access their methods directly.       ###
-###########################################################################
-
-class _dummyButton(Button, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyCheckbutton(Checkbutton, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyEntry(Entry, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyFrame(Frame, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyLabel(Label, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyListbox(Listbox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyMenu(Menu, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyMenubutton(Menubutton, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyScrollbar(Scrollbar, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyText(Text, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyScrolledListBox(ScrolledListBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['listbox'] = _dummyListbox(self, 'listbox')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class _dummyHList(HList, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyScrolledHList(ScrolledHList, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class _dummyTList(TList, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyComboBox(ComboBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, ['fancy',destroy_physically])
-        self.subwidget_list['label'] = _dummyLabel(self, 'label')
-        self.subwidget_list['entry'] = _dummyEntry(self, 'entry')
-        self.subwidget_list['arrow'] = _dummyButton(self, 'arrow')
-
-        self.subwidget_list['slistbox'] = _dummyScrolledListBox(self,
-                                                                'slistbox')
-        try:
-            self.subwidget_list['tick'] = _dummyButton(self, 'tick')
-            #cross Button : present if created with the fancy option
-            self.subwidget_list['cross'] = _dummyButton(self, 'cross')
-        except TypeError:
-            # unavailable when -fancy not specified
-            pass
-
-class _dummyDirList(DirList, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['hlist'] = _dummyHList(self, 'hlist')
-        self.subwidget_list['vsb'] = _dummyScrollbar(self, 'vsb')
-        self.subwidget_list['hsb'] = _dummyScrollbar(self, 'hsb')
-
-class _dummyDirSelectBox(DirSelectBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['dirlist'] = _dummyDirList(self, 'dirlist')
-        self.subwidget_list['dircbx'] = _dummyFileComboBox(self, 'dircbx')
-
-class _dummyExFileSelectBox(ExFileSelectBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['cancel'] = _dummyButton(self, 'cancel')
-        self.subwidget_list['ok'] = _dummyButton(self, 'ok')
-        self.subwidget_list['hidden'] = _dummyCheckbutton(self, 'hidden')
-        self.subwidget_list['types'] = _dummyComboBox(self, 'types')
-        self.subwidget_list['dir'] = _dummyComboBox(self, 'dir')
-        self.subwidget_list['dirlist'] = _dummyScrolledListBox(self, 'dirlist')
-        self.subwidget_list['file'] = _dummyComboBox(self, 'file')
-        self.subwidget_list['filelist'] = _dummyScrolledListBox(self, 'filelist')
-
-class _dummyFileSelectBox(FileSelectBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['dirlist'] = _dummyScrolledListBox(self, 'dirlist')
-        self.subwidget_list['filelist'] = _dummyScrolledListBox(self, 'filelist')
-        self.subwidget_list['filter'] = _dummyComboBox(self, 'filter')
-        self.subwidget_list['selection'] = _dummyComboBox(self, 'selection')
-
-class _dummyFileComboBox(ComboBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['dircbx'] = _dummyComboBox(self, 'dircbx')
-
-class _dummyStdButtonBox(StdButtonBox, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-        self.subwidget_list['ok'] = _dummyButton(self, 'ok')
-        self.subwidget_list['apply'] = _dummyButton(self, 'apply')
-        self.subwidget_list['cancel'] = _dummyButton(self, 'cancel')
-        self.subwidget_list['help'] = _dummyButton(self, 'help')
-
-class _dummyNoteBookFrame(NoteBookFrame, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=0):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-class _dummyPanedWindow(PanedWindow, TixSubWidget):
-    def __init__(self, master, name, destroy_physically=1):
-        TixSubWidget.__init__(self, master, name, destroy_physically)
-
-########################
-### Utility Routines ###
-########################
-
-#mike Should tixDestroy be exposed as a wrapper? - but not for widgets.
-
-def OptionName(widget):
-    '''Returns the qualified path name for the widget. Normally used to set
-    default options for subwidgets. See tixwidgets.py'''
-    return widget.tk.call('tixOptionName', widget._w)
-
-# Called with a dictionary argument of the form
-# {'*.c':'C source files', '*.txt':'Text Files', '*':'All files'}
-# returns a string which can be used to configure the fsbox file types
-# in an ExFileSelectBox. i.e.,
-# '{{*} {* - All files}} {{*.c} {*.c - C source files}} {{*.txt} {*.txt - Text Files}}'
-def FileTypeList(dict):
-    s = ''
-    for type in dict.keys():
-        s = s + '{{' + type + '} {' + type + ' - ' + dict[type] + '}} '
-    return s
-
-# Still to be done:
-# tixIconView
-class CObjView(TixWidget):
-    """This file implements the Canvas Object View widget. This is a base
-    class of IconView. It implements automatic placement/adjustment of the
-    scrollbars according to the canvas objects inside the canvas subwidget.
-    The scrollbars are adjusted so that the canvas is just large enough
-    to see all the objects.
-    """
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    pass
-
-
-class Grid(TixWidget, XView, YView):
-    '''The Tix Grid command creates a new window  and makes it into a
-    tixGrid widget. Additional options, may be specified on the command
-    line or in the option database to configure aspects such as its cursor
-    and relief.
-
-    A Grid widget displays its contents in a two dimensional grid of cells.
-    Each cell may contain one Tix display item, which may be in text,
-    graphics or other formats. See the DisplayStyle class for more information
-    about Tix display items. Individual cells, or groups of cells, can be
-    formatted with a wide range of attributes, such as its color, relief and
-    border.
-
-    Subwidgets - None'''
-    # valid specific resources as of Tk 8.4
-    # editdonecmd, editnotifycmd, floatingcols, floatingrows, formatcmd,
-    # highlightbackground, highlightcolor, leftmargin, itemtype, selectmode,
-    # selectunit, topmargin,
-    def __init__(self, master=None, cnf={}, **kw):
-        static= []
-        self.cnf= cnf
-        TixWidget.__init__(self, master, 'tixGrid', static, cnf, kw)
-
-    # valid options as of Tk 8.4
-    # anchor, bdtype, cget, configure, delete, dragsite, dropsite, entrycget,
-    # edit, entryconfigure, format, geometryinfo, info, index, move, nearest,
-    # selection, set, size, unset, xview, yview
-    def anchor_clear(self):
-        """Removes the selection anchor."""
-        self.tk.call(self, 'anchor', 'clear')
-
-    def anchor_get(self):
-        "Get the (x,y) coordinate of the current anchor cell"
-        return self._getints(self.tk.call(self, 'anchor', 'get'))
-
-    def anchor_set(self, x, y):
-        """Set the selection anchor to the cell at (x, y)."""
-        self.tk.call(self, 'anchor', 'set', x, y)
-
-    def delete_row(self, from_, to=None):
-        """Delete rows between from_ and to inclusive.
-        If to is not provided,  delete only row at from_"""
-        if to is None:
-            self.tk.call(self, 'delete', 'row', from_)
-        else:
-            self.tk.call(self, 'delete', 'row', from_, to)
-
-    def delete_column(self, from_, to=None):
-        """Delete columns between from_ and to inclusive.
-        If to is not provided,  delete only column at from_"""
-        if to is None:
-            self.tk.call(self, 'delete', 'column', from_)
-        else:
-            self.tk.call(self, 'delete', 'column', from_, to)
-
-    def edit_apply(self):
-        """If any cell is being edited, de-highlight the cell  and  applies
-        the changes."""
-        self.tk.call(self, 'edit', 'apply')
-
-    def edit_set(self, x, y):
-        """Highlights  the  cell  at  (x, y) for editing, if the -editnotify
-        command returns True for this cell."""
-        self.tk.call(self, 'edit', 'set', x, y)
-
-    def entrycget(self, x, y, option):
-        "Get the option value for cell at (x,y)"
-        if option and option[0] != '-':
-            option = '-' + option
-        return self.tk.call(self, 'entrycget', x, y, option)
-
-    def entryconfigure(self, x, y, cnf=None, **kw):
-        return self._configure(('entryconfigure', x, y), cnf, kw)
-
-    # def format
-    # def index
-
-    def info_exists(self, x, y):
-        "Return True if display item exists at (x,y)"
-        return self._getboolean(self.tk.call(self, 'info', 'exists', x, y))
-
-    def info_bbox(self, x, y):
-        # This seems to always return '', at least for 'text' displayitems
-        return self.tk.call(self, 'info', 'bbox', x, y)
-
-    def move_column(self, from_, to, offset):
-        """Moves the range of columns from position FROM through TO by
-        the distance indicated by OFFSET. For example, move_column(2, 4, 1)
-        moves the columns 2,3,4 to columns 3,4,5."""
-        self.tk.call(self, 'move', 'column', from_, to, offset)
-
-    def move_row(self, from_, to, offset):
-        """Moves the range of rows from position FROM through TO by
-        the distance indicated by OFFSET.
-        For example, move_row(2, 4, 1) moves the rows 2,3,4 to rows 3,4,5."""
-        self.tk.call(self, 'move', 'row', from_, to, offset)
-
-    def nearest(self, x, y):
-        "Return coordinate of cell nearest pixel coordinate (x,y)"
-        return self._getints(self.tk.call(self, 'nearest', x, y))
-
-    # def selection adjust
-    # def selection clear
-    # def selection includes
-    # def selection set
-    # def selection toggle
-
-    def set(self, x, y, itemtype=None, **kw):
-        args= self._options(self.cnf, kw)
-        if itemtype is not None:
-            args= ('-itemtype', itemtype) + args
-        self.tk.call(self, 'set', x, y, *args)
-
-    def size_column(self, index, **kw):
-        """Queries or sets the size of the column given by
-        INDEX.  INDEX may be any non-negative
-        integer that gives the position of a given column.
-        INDEX can also be the string "default"; in this case, this command
-        queries or sets the default size of all columns.
-        When no option-value pair is given, this command returns a tuple
-        containing the current size setting of the given column.  When
-        option-value pairs are given, the corresponding options of the
-        size setting of the given column are changed. Options may be one
-        of the following:
-              pad0 pixels
-                     Specifies the paddings to the left of a column.
-              pad1 pixels
-                     Specifies the paddings to the right of a column.
-              size val
-                     Specifies the width of a column.  Val may be:
-                     "auto" -- the width of the column is set to the
-                     width of the widest cell in the column;
-                     a valid Tk screen distance unit;
-                     or a real number following by the word chars
-                     (e.g. 3.4chars) that sets the width of the column to the
-                     given number of characters."""
-        return self.tk.splitlist(self.tk.call(self._w, 'size', 'column', index,
-                             *self._options({}, kw)))
-
-    def size_row(self, index, **kw):
-        """Queries or sets the size of the row given by
-        INDEX. INDEX may be any non-negative
-        integer that gives the position of a given row .
-        INDEX can also be the string "default"; in this case, this command
-        queries or sets the default size of all rows.
-        When no option-value pair is given, this command returns a list con-
-        taining the current size setting of the given row . When option-value
-        pairs are given, the corresponding options of the size setting of the
-        given row are changed. Options may be one of the following:
-              pad0 pixels
-                     Specifies the paddings to the top of a row.
-              pad1 pixels
-                     Specifies the paddings to the bottom of a row.
-              size val
-                     Specifies the height of a row.  Val may be:
-                     "auto" -- the height of the row is set to the
-                     height of the highest cell in the row;
-                     a valid Tk screen distance unit;
-                     or a real number following by the word chars
-                     (e.g. 3.4chars) that sets the height of the row to the
-                     given number of characters."""
-        return self.tk.splitlist(self.tk.call(
-                    self, 'size', 'row', index, *self._options({}, kw)))
-
-    def unset(self, x, y):
-        """Clears the cell at (x, y) by removing its display item."""
-        self.tk.call(self._w, 'unset', x, y)
-
-
-class ScrolledGrid(Grid):
-    '''Scrolled Grid widgets'''
-
-    # FIXME: It should inherit -superclass tixScrolledWidget
-    def __init__(self, master=None, cnf={}, **kw):
-        static= []
-        self.cnf= cnf
-        TixWidget.__init__(self, master, 'tixScrolledGrid', static, cnf, kw)
diff --git a/Lib/tkinter/ttk.py b/Lib/tkinter/ttk.py
index efeabb7a92c627..5ca938a670831a 100644
--- a/Lib/tkinter/ttk.py
+++ b/Lib/tkinter/ttk.py
@@ -95,40 +95,47 @@ def _format_mapdict(mapdict, script=False):
 
 def _format_elemcreate(etype, script=False, *args, **kw):
     """Formats args and kw according to the given element factory etype."""
-    spec = None
+    specs = ()
     opts = ()
-    if etype in ("image", "vsapi"):
-        if etype == "image": # define an element based on an image
-            # first arg should be the default image name
-            iname = args[0]
-            # next args, if any, are statespec/value pairs which is almost
-            # a mapdict, but we just need the value
-            imagespec = _join(_mapdict_values(args[1:]))
-            spec = "%s %s" % (iname, imagespec)
-
+    if etype == "image": # define an element based on an image
+        # first arg should be the default image name
+        iname = args[0]
+        # next args, if any, are statespec/value pairs which is almost
+        # a mapdict, but we just need the value
+        imagespec = (iname, *_mapdict_values(args[1:]))
+        if script:
+            specs = (imagespec,)
         else:
-            # define an element whose visual appearance is drawn using the
-            # Microsoft Visual Styles API which is responsible for the
-            # themed styles on Windows XP and Vista.
-            # Availability: Tk 8.6, Windows XP and Vista.
-            class_name, part_id = args[:2]
-            statemap = _join(_mapdict_values(args[2:]))
-            spec = "%s %s %s" % (class_name, part_id, statemap)
+            specs = (_join(imagespec),)
+        opts = _format_optdict(kw, script)
 
+    if etype == "vsapi":
+        # define an element whose visual appearance is drawn using the
+        # Microsoft Visual Styles API which is responsible for the
+        # themed styles on Windows XP and Vista.
+        # Availability: Tk 8.6, Windows XP and Vista.
+        if len(args) < 3:
+            class_name, part_id = args
+            statemap = (((), 1),)
+        else:
+            class_name, part_id, statemap = args
+        specs = (class_name, part_id, tuple(_mapdict_values(statemap)))
         opts = _format_optdict(kw, script)
 
     elif etype == "from": # clone an element
         # it expects a themename and optionally an element to clone from,
         # otherwise it will clone {} (empty element)
-        spec = args[0] # theme name
+        specs = (args[0],) # theme name
         if len(args) > 1: # elementfrom specified
             opts = (_format_optvalue(args[1], script),)
 
     if script:
-        spec = '{%s}' % spec
+        specs = _join(specs)
         opts = ' '.join(opts)
+        return specs, opts
+    else:
+        return *specs, opts
 
-    return spec, opts
 
 def _format_layoutlist(layout, indent=0, indent_size=2):
     """Formats a layout list so we can pass the result to ttk::style
@@ -214,10 +221,10 @@ def _script_from_settings(settings):
 
             elemargs = eopts[1:argc]
             elemkw = eopts[argc] if argc < len(eopts) and eopts[argc] else {}
-            spec, opts = _format_elemcreate(etype, True, *elemargs, **elemkw)
+            specs, eopts = _format_elemcreate(etype, True, *elemargs, **elemkw)
 
             script.append("ttk::style element create %s %s %s %s" % (
-                name, etype, spec, opts))
+                name, etype, specs, eopts))
 
     return '\n'.join(script)
 
@@ -434,9 +441,9 @@ def layout(self, style, layoutspec=None):
 
     def element_create(self, elementname, etype, *args, **kw):
         """Create a new element in the current theme of given etype."""
-        spec, opts = _format_elemcreate(etype, False, *args, **kw)
+        *specs, opts = _format_elemcreate(etype, False, *args, **kw)
         self.tk.call(self._name, "element", "create", elementname, etype,
-            spec, *opts)
+            *specs, *opts)
 
 
     def element_names(self):
diff --git a/Lib/token.py b/Lib/token.py
index 1459d12b376f82..b620317106e173 100644
--- a/Lib/token.py
+++ b/Lib/token.py
@@ -59,20 +59,18 @@
 COLONEQUAL = 53
 EXCLAMATION = 54
 OP = 55
-AWAIT = 56
-ASYNC = 57
-TYPE_IGNORE = 58
-TYPE_COMMENT = 59
-SOFT_KEYWORD = 60
-FSTRING_START = 61
-FSTRING_MIDDLE = 62
-FSTRING_END = 63
+TYPE_IGNORE = 56
+TYPE_COMMENT = 57
+SOFT_KEYWORD = 58
+FSTRING_START = 59
+FSTRING_MIDDLE = 60
+FSTRING_END = 61
+COMMENT = 62
+NL = 63
 # These aren't used by the C tokenizer but are needed for tokenize.py
 ERRORTOKEN = 64
-COMMENT = 65
-NL = 66
-ENCODING = 67
-N_TOKENS = 68
+ENCODING = 65
+N_TOKENS = 66
 # Special definitions for cooperation with parser
 NT_OFFSET = 256
 
diff --git a/Lib/tokenize.py b/Lib/tokenize.py
index 46d2224f5cc083..0ab1893d42f72f 100644
--- a/Lib/tokenize.py
+++ b/Lib/tokenize.py
@@ -34,13 +34,14 @@
 import sys
 from token import *
 from token import EXACT_TOKEN_TYPES
+import _tokenize
 
 cookie_re = re.compile(r'^[ \t\f]*#.*?coding[:=][ \t]*([-\w.]+)', re.ASCII)
 blank_re = re.compile(br'^[ \t\f]*(?:[#\r\n]|$)', re.ASCII)
 
 import token
 __all__ = token.__all__ + ["tokenize", "generate_tokens", "detect_encoding",
-                           "untokenize", "TokenInfo"]
+                           "untokenize", "TokenInfo", "open", "TokenError"]
 del token
 
 class TokenInfo(collections.namedtuple('TokenInfo', 'type string start end line')):
@@ -160,8 +161,6 @@ def _compile(expr):
 
 class TokenError(Exception): pass
 
-class StopTokenizing(Exception): pass
-
 
 class Untokenizer:
 
@@ -213,6 +212,14 @@ def untokenize(self, iterable):
                     self.tokens.append(indent)
                     self.prev_col = len(indent)
                 startline = False
+            elif tok_type == FSTRING_MIDDLE:
+                if '{' in token or '}' in token:
+                    end_line, end_col = end
+                    end = (end_line, end_col + token.count('{') + token.count('}'))
+                    token = re.sub('{', '{{', token)
+                    token = re.sub('}', '}}', token)
+
+
             self.add_whitespace(start)
             self.tokens.append(token)
             self.prev_row, self.prev_col = end
@@ -255,6 +262,11 @@ def compat(self, token, iterable):
             elif startline and indents:
                 toks_append(indents[-1])
                 startline = False
+            elif toknum == FSTRING_MIDDLE:
+                if '{' in tokval or '}' in tokval:
+                    tokval = re.sub('{', '{{', tokval)
+                    tokval = re.sub('}', '}}', tokval)
+
             toks_append(tokval)
 
 
@@ -286,7 +298,7 @@ def untokenize(iterable):
 
 
 def _get_normal_name(orig_enc):
-    """Imitates get_normal_name in tokenizer.c."""
+    """Imitates get_normal_name in Parser/tokenizer/helpers.c."""
     # Only care about the first 12 characters.
     enc = orig_enc[:12].lower().replace("_", "-")
     if enc == "utf-8" or enc.startswith("utf-8-"):
@@ -404,7 +416,6 @@ def open(filename):
         buffer.close()
         raise
 
-
 def tokenize(readline):
     """
     The tokenize() generator requires one argument, readline, which
@@ -425,193 +436,13 @@ def tokenize(readline):
     which tells you which encoding was used to decode the bytes stream.
     """
     encoding, consumed = detect_encoding(readline)
-    empty = _itertools.repeat(b"")
-    rl_gen = _itertools.chain(consumed, iter(readline, b""), empty)
-    return _tokenize(rl_gen.__next__, encoding)
-
-
-def _tokenize(readline, encoding):
-    lnum = parenlev = continued = 0
-    numchars = '0123456789'
-    contstr, needcont = '', 0
-    contline = None
-    indents = [0]
-
+    rl_gen = _itertools.chain(consumed, iter(readline, b""))
     if encoding is not None:
         if encoding == "utf-8-sig":
             # BOM will already have been stripped.
             encoding = "utf-8"
         yield TokenInfo(ENCODING, encoding, (0, 0), (0, 0), '')
-    last_line = b''
-    line = b''
-    while True:                                # loop over lines in stream
-        try:
-            # We capture the value of the line variable here because
-            # readline uses the empty string '' to signal end of input,
-            # hence `line` itself will always be overwritten at the end
-            # of this loop.
-            last_line = line
-            line = readline()
-        except StopIteration:
-            line = b''
-
-        if encoding is not None:
-            line = line.decode(encoding)
-        lnum += 1
-        pos, max = 0, len(line)
-
-        if contstr:                            # continued string
-            if not line:
-                raise TokenError("EOF in multi-line string", strstart)
-            endmatch = endprog.match(line)
-            if endmatch:
-                pos = end = endmatch.end(0)
-                yield TokenInfo(STRING, contstr + line[:end],
-                       strstart, (lnum, end), contline + line)
-                contstr, needcont = '', 0
-                contline = None
-            elif needcont and line[-2:] != '\\\n' and line[-3:] != '\\\r\n':
-                yield TokenInfo(ERRORTOKEN, contstr + line,
-                           strstart, (lnum, len(line)), contline)
-                contstr = ''
-                contline = None
-                continue
-            else:
-                contstr = contstr + line
-                contline = contline + line
-                continue
-
-        elif parenlev == 0 and not continued:  # new statement
-            if not line: break
-            column = 0
-            while pos < max:                   # measure leading whitespace
-                if line[pos] == ' ':
-                    column += 1
-                elif line[pos] == '\t':
-                    column = (column//tabsize + 1)*tabsize
-                elif line[pos] == '\f':
-                    column = 0
-                else:
-                    break
-                pos += 1
-            if pos == max:
-                break
-
-            if line[pos] in '#\r\n':           # skip comments or blank lines
-                if line[pos] == '#':
-                    comment_token = line[pos:].rstrip('\r\n')
-                    yield TokenInfo(COMMENT, comment_token,
-                           (lnum, pos), (lnum, pos + len(comment_token)), line)
-                    pos += len(comment_token)
-
-                yield TokenInfo(NL, line[pos:],
-                           (lnum, pos), (lnum, len(line)), line)
-                continue
-
-            if column > indents[-1]:           # count indents or dedents
-                indents.append(column)
-                yield TokenInfo(INDENT, line[:pos], (lnum, 0), (lnum, pos), line)
-            while column < indents[-1]:
-                if column not in indents:
-                    raise IndentationError(
-                        "unindent does not match any outer indentation level",
-                        ("<tokenize>", lnum, pos, line))
-                indents = indents[:-1]
-
-                yield TokenInfo(DEDENT, '', (lnum, pos), (lnum, pos), line)
-
-        else:                                  # continued statement
-            if not line:
-                raise TokenError("EOF in multi-line statement", (lnum, 0))
-            continued = 0
-
-        while pos < max:
-            pseudomatch = _compile(PseudoToken).match(line, pos)
-            if pseudomatch:                                # scan for tokens
-                start, end = pseudomatch.span(1)
-                spos, epos, pos = (lnum, start), (lnum, end), end
-                if start == end:
-                    continue
-                token, initial = line[start:end], line[start]
-
-                if (initial in numchars or                 # ordinary number
-                    (initial == '.' and token != '.' and token != '...')):
-                    yield TokenInfo(NUMBER, token, spos, epos, line)
-                elif initial in '\r\n':
-                    if parenlev > 0:
-                        yield TokenInfo(NL, token, spos, epos, line)
-                    else:
-                        yield TokenInfo(NEWLINE, token, spos, epos, line)
-
-                elif initial == '#':
-                    assert not token.endswith("\n")
-                    yield TokenInfo(COMMENT, token, spos, epos, line)
-
-                elif token in triple_quoted:
-                    endprog = _compile(endpats[token])
-                    endmatch = endprog.match(line, pos)
-                    if endmatch:                           # all on one line
-                        pos = endmatch.end(0)
-                        token = line[start:pos]
-                        yield TokenInfo(STRING, token, spos, (lnum, pos), line)
-                    else:
-                        strstart = (lnum, start)           # multiple lines
-                        contstr = line[start:]
-                        contline = line
-                        break
-
-                # Check up to the first 3 chars of the token to see if
-                #  they're in the single_quoted set. If so, they start
-                #  a string.
-                # We're using the first 3, because we're looking for
-                #  "rb'" (for example) at the start of the token. If
-                #  we switch to longer prefixes, this needs to be
-                #  adjusted.
-                # Note that initial == token[:1].
-                # Also note that single quote checking must come after
-                #  triple quote checking (above).
-                elif (initial in single_quoted or
-                      token[:2] in single_quoted or
-                      token[:3] in single_quoted):
-                    if token[-1] == '\n':                  # continued string
-                        strstart = (lnum, start)
-                        # Again, using the first 3 chars of the
-                        #  token. This is looking for the matching end
-                        #  regex for the correct type of quote
-                        #  character. So it's really looking for
-                        #  endpats["'"] or endpats['"'], by trying to
-                        #  skip string prefix characters, if any.
-                        endprog = _compile(endpats.get(initial) or
-                                           endpats.get(token[1]) or
-                                           endpats.get(token[2]))
-                        contstr, needcont = line[start:], 1
-                        contline = line
-                        break
-                    else:                                  # ordinary string
-                        yield TokenInfo(STRING, token, spos, epos, line)
-
-                elif initial.isidentifier():               # ordinary name
-                    yield TokenInfo(NAME, token, spos, epos, line)
-                elif initial == '\\':                      # continued stmt
-                    continued = 1
-                else:
-                    if initial in '([{':
-                        parenlev += 1
-                    elif initial in ')]}':
-                        parenlev -= 1
-                    yield TokenInfo(OP, token, spos, epos, line)
-            else:
-                yield TokenInfo(ERRORTOKEN, line[pos],
-                           (lnum, pos), (lnum, pos+1), line)
-                pos += 1
-
-    # Add an implicit NEWLINE if the input doesn't end in one
-    if last_line and last_line[-1] not in '\r\n' and not last_line.strip().startswith("#"):
-        yield TokenInfo(NEWLINE, '', (lnum - 1, len(last_line)), (lnum - 1, len(last_line) + 1), '')
-    for indent in indents[1:]:                 # pop remaining indent levels
-        yield TokenInfo(DEDENT, '', (lnum, 0), (lnum, 0), '')
-    yield TokenInfo(ENDMARKER, '', (lnum, 0), (lnum, 0), '')
-
+    yield from _generate_tokens_from_c_tokenizer(rl_gen.__next__, encoding, extra_tokens=True)
 
 def generate_tokens(readline):
     """Tokenize a source reading Python code as unicode strings.
@@ -619,7 +450,7 @@ def generate_tokens(readline):
     This has the same API as tokenize(), except that it expects the *readline*
     callable to return str objects instead of bytes.
     """
-    return _tokenize(readline, None)
+    return _generate_tokens_from_c_tokenizer(readline, extra_tokens=True)
 
 def main():
     import argparse
@@ -656,7 +487,9 @@ def error(message, filename=None, location=None):
                 tokens = list(tokenize(f.readline))
         else:
             filename = "<stdin>"
-            tokens = _tokenize(sys.stdin.readline, None)
+            tokens = _generate_tokens_from_c_tokenizer(
+                sys.stdin.readline, extra_tokens=True)
+
 
         # Output the tokenization
         for token in tokens:
@@ -682,12 +515,30 @@ def error(message, filename=None, location=None):
         perror("unexpected error: %s" % err)
         raise
 
-def _generate_tokens_from_c_tokenizer(source):
+def _transform_msg(msg):
+    """Transform error messages from the C tokenizer into the Python tokenize
+
+    The C tokenizer is more picky than the Python one, so we need to massage
+    the error messages a bit for backwards compatibility.
+    """
+    if "unterminated triple-quoted string literal" in msg:
+        return "EOF in multi-line string"
+    return msg
+
+def _generate_tokens_from_c_tokenizer(source, encoding=None, extra_tokens=False):
     """Tokenize a source reading Python code as unicode strings using the internal C tokenizer"""
-    import _tokenize as c_tokenizer
-    for info in c_tokenizer.TokenizerIter(source):
-        tok, type, lineno, end_lineno, col_off, end_col_off, line = info
-        yield TokenInfo(type, tok, (lineno, col_off), (end_lineno, end_col_off), line)
+    if encoding is None:
+        it = _tokenize.TokenizerIter(source, extra_tokens=extra_tokens)
+    else:
+        it = _tokenize.TokenizerIter(source, encoding=encoding, extra_tokens=extra_tokens)
+    try:
+        for info in it:
+            yield TokenInfo._make(info)
+    except SyntaxError as e:
+        if type(e) != SyntaxError:
+            raise e from None
+        msg = _transform_msg(e.msg)
+        raise TokenError(msg, (e.lineno, e.offset)) from None
 
 
 if __name__ == "__main__":
diff --git a/Lib/trace.py b/Lib/trace.py
index fb9a423ea09fce..7cb6f897634b14 100755
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -202,7 +202,8 @@ def update(self, other):
         for key in other_callers:
             callers[key] = 1
 
-    def write_results(self, show_missing=True, summary=False, coverdir=None):
+    def write_results(self, show_missing=True, summary=False, coverdir=None, *,
+                      ignore_missing_files=False):
         """
         Write the coverage results.
 
@@ -211,6 +212,9 @@ def write_results(self, show_missing=True, summary=False, coverdir=None):
         :param coverdir: If None, the results of each module are placed in its
                          directory, otherwise it is included in the directory
                          specified.
+        :param ignore_missing_files: If True, counts for files that no longer
+                         exist are silently ignored. Otherwise, a missing file
+                         will raise a FileNotFoundError.
         """
         if self.calledfuncs:
             print()
@@ -253,6 +257,9 @@ def write_results(self, show_missing=True, summary=False, coverdir=None):
             if filename.endswith(".pyc"):
                 filename = filename[:-1]
 
+            if ignore_missing_files and not os.path.isfile(filename):
+                continue
+
             if coverdir is None:
                 dir = os.path.dirname(os.path.abspath(filename))
                 modulename = _modname(filename)
@@ -278,7 +285,6 @@ def write_results(self, show_missing=True, summary=False, coverdir=None):
                 percent = int(100 * n_hits / n_lines)
                 sums[modulename] = n_lines, percent, modulename, filename
 
-
         if summary and sums:
             print("lines   cov%   module   (path)")
             for m in sorted(sums):
diff --git a/Lib/traceback.py b/Lib/traceback.py
index 419f6e81b5e1be..1cf008c7e9da97 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -1,10 +1,13 @@
 """Extract, format and print information about Python stack traces."""
 
+import os
+import io
 import collections.abc
 import itertools
 import linecache
 import sys
 import textwrap
+import warnings
 from contextlib import suppress
 
 __all__ = ['extract_stack', 'extract_tb', 'format_exception',
@@ -18,6 +21,8 @@
 # Formatting and printing lists of traceback lines.
 #
 
+_COLORIZE = True
+
 def print_list(extracted_list, file=None):
     """Print the list of tuples as returned by extract_tb() or
     extract_stack() as a formatted stack trace to the given file."""
@@ -109,7 +114,7 @@ def _parse_value_tb(exc, value, tb):
 
 
 def print_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
-                    file=None, chain=True):
+                    file=None, chain=True, **kwargs):
     """Print exception up to 'limit' stack trace entries from 'tb' to 'file'.
 
     This differs from print_tb() in the following ways: (1) if
@@ -120,9 +125,44 @@ def print_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
     occurred with a caret on the next line indicating the approximate
     position of the error.
     """
+    colorize = kwargs.get("colorize", False)
     value, tb = _parse_value_tb(exc, value, tb)
     te = TracebackException(type(value), value, tb, limit=limit, compact=True)
-    te.print(file=file, chain=chain)
+    te.print(file=file, chain=chain, colorize=colorize)
+
+
+BUILTIN_EXCEPTION_LIMIT = object()
+
+def _can_colorize():
+    if sys.platform == "win32":
+        try:
+            import nt
+            if not nt._supports_virtual_terminal():
+                return False
+        except (ImportError, AttributeError):
+            return False
+
+    if os.environ.get("PYTHON_COLORS") == "0":
+        return False
+    if os.environ.get("PYTHON_COLORS") == "1":
+        return True
+    if "NO_COLOR" in os.environ:
+        return False
+    if not _COLORIZE:
+        return False
+    if "FORCE_COLOR" in os.environ:
+        return True
+    if os.environ.get("TERM") == "dumb":
+        return False
+    try:
+        return os.isatty(sys.stderr.fileno())
+    except io.UnsupportedOperation:
+        return sys.stderr.isatty()
+
+def _print_exception_bltin(exc, /):
+    file = sys.stderr if sys.stderr is not None else sys.__stderr__
+    colorize = _can_colorize()
+    return print_exception(exc, limit=BUILTIN_EXCEPTION_LIMIT, file=file, colorize=colorize)
 
 
 def format_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
@@ -140,34 +180,42 @@ def format_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
     return list(te.format(chain=chain))
 
 
-def format_exception_only(exc, /, value=_sentinel):
+def format_exception_only(exc, /, value=_sentinel, *, show_group=False):
     """Format the exception part of a traceback.
 
     The return value is a list of strings, each ending in a newline.
 
-    Normally, the list contains a single string; however, for
-    SyntaxError exceptions, it contains several lines that (when
-    printed) display detailed information about where the syntax
-    error occurred.
-
-    The message indicating which exception occurred is always the last
-    string in the list.
+    The list contains the exception's message, which is
+    normally a single string; however, for :exc:`SyntaxError` exceptions, it
+    contains several lines that (when printed) display detailed information
+    about where the syntax error occurred. Following the message, the list
+    contains the exception's ``__notes__``.
 
+    When *show_group* is ``True``, and the exception is an instance of
+    :exc:`BaseExceptionGroup`, the nested exceptions are included as
+    well, recursively, with indentation relative to their nesting depth.
     """
     if value is _sentinel:
         value = exc
     te = TracebackException(type(value), value, None, compact=True)
-    return list(te.format_exception_only())
+    return list(te.format_exception_only(show_group=show_group))
 
 
 # -- not official API but folk probably use these two functions.
 
-def _format_final_exc_line(etype, value):
+def _format_final_exc_line(etype, value, *, insert_final_newline=True, colorize=False):
     valuestr = _safe_string(value, 'exception')
-    if value is None or not valuestr:
-        line = "%s\n" % etype
+    end_char = "\n" if insert_final_newline else ""
+    if colorize:
+        if value is None or not valuestr:
+            line = f"{_ANSIColors.BOLD_MAGENTA}{etype}{_ANSIColors.RESET}{end_char}"
+        else:
+            line = f"{_ANSIColors.BOLD_MAGENTA}{etype}{_ANSIColors.RESET}: {_ANSIColors.MAGENTA}{valuestr}{_ANSIColors.RESET}{end_char}"
     else:
-        line = "%s: %s\n" % (etype, valuestr)
+        if value is None or not valuestr:
+            line = f"{etype}{end_char}"
+        else:
+            line = f"{etype}: {valuestr}{end_char}"
     return line
 
 def _safe_string(value, what, func=str):
@@ -263,7 +311,7 @@ class FrameSummary:
     """
 
     __slots__ = ('filename', 'lineno', 'end_lineno', 'colno', 'end_colno',
-                 'name', '_line', 'locals')
+                 'name', '_lines', '_lines_dedented', 'locals')
 
     def __init__(self, filename, lineno, name, *, lookup_line=True,
             locals=None, line=None,
@@ -279,15 +327,16 @@ def __init__(self, filename, lineno, name, *, lookup_line=True,
         """
         self.filename = filename
         self.lineno = lineno
+        self.end_lineno = lineno if end_lineno is None else end_lineno
+        self.colno = colno
+        self.end_colno = end_colno
         self.name = name
-        self._line = line
+        self._lines = line
+        self._lines_dedented = None
         if lookup_line:
             self.line
         self.locals = {k: _safe_string(v, 'local', func=repr)
             for k, v in locals.items()} if locals else None
-        self.end_lineno = end_lineno
-        self.colno = colno
-        self.end_colno = end_colno
 
     def __eq__(self, other):
         if isinstance(other, FrameSummary):
@@ -312,19 +361,39 @@ def __repr__(self):
     def __len__(self):
         return 4
 
+    def _set_lines(self):
+        if (
+            self._lines is None
+            and self.lineno is not None
+            and self.end_lineno is not None
+        ):
+            lines = []
+            for lineno in range(self.lineno, self.end_lineno + 1):
+                # treat errors (empty string) and empty lines (newline) as the same
+                lines.append(linecache.getline(self.filename, lineno).rstrip())
+            self._lines = "\n".join(lines) + "\n"
+
     @property
-    def _original_line(self):
+    def _original_lines(self):
         # Returns the line as-is from the source, without modifying whitespace.
-        self.line
-        return self._line
+        self._set_lines()
+        return self._lines
+
+    @property
+    def _dedented_lines(self):
+        # Returns _original_lines, but dedented
+        self._set_lines()
+        if self._lines_dedented is None and self._lines is not None:
+            self._lines_dedented = textwrap.dedent(self._lines)
+        return self._lines_dedented
 
     @property
     def line(self):
-        if self._line is None:
-            if self.lineno is None:
-                return None
-            self._line = linecache.getline(self.filename, self.lineno)
-        return self._line.strip()
+        self._set_lines()
+        if self._lines is None:
+            return None
+        # return only the first line, stripped
+        return self._lines.partition("\n")[0].strip()
 
 
 def walk_stack(f):
@@ -374,6 +443,14 @@ def _get_code_position(code, instruction_index):
 
 _RECURSIVE_CUTOFF = 3 # Also hardcoded in traceback.c.
 
+class _ANSIColors:
+    RED = '\x1b[31m'
+    BOLD_RED = '\x1b[1;31m'
+    MAGENTA = '\x1b[35m'
+    BOLD_MAGENTA = '\x1b[1;35m'
+    GREY = '\x1b[90m'
+    RESET = '\x1b[0m'
+
 class StackSummary(list):
     """A list of FrameSummary objects, representing a stack of frames."""
 
@@ -406,12 +483,16 @@ def _extract_from_extended_frame_gen(klass, frame_gen, *, limit=None,
         # (frame, (lineno, end_lineno, colno, end_colno)) in the stack.
         # Only lineno is required, the remaining fields can be None if the
         # information is not available.
-        if limit is None:
+        builtin_limit = limit is BUILTIN_EXCEPTION_LIMIT
+        if limit is None or builtin_limit:
             limit = getattr(sys, 'tracebacklimit', None)
             if limit is not None and limit < 0:
                 limit = 0
         if limit is not None:
-            if limit >= 0:
+            if builtin_limit:
+                frame_gen = tuple(frame_gen)
+                frame_gen = frame_gen[len(frame_gen) - limit:]
+            elif limit >= 0:
                 frame_gen = itertools.islice(frame_gen, limit)
             else:
                 frame_gen = collections.deque(frame_gen, maxlen=-limit)
@@ -422,7 +503,6 @@ def _extract_from_extended_frame_gen(klass, frame_gen, *, limit=None,
             co = f.f_code
             filename = co.co_filename
             name = co.co_name
-
             fnames.add(filename)
             linecache.lazycache(filename, f.f_globals)
             # Must defer line lookups until we have called checkcache.
@@ -435,6 +515,7 @@ def _extract_from_extended_frame_gen(klass, frame_gen, *, limit=None,
                 end_lineno=end_lineno, colno=colno, end_colno=end_colno))
         for filename in fnames:
             linecache.checkcache(filename)
+
         # If immediate lookup was desired, trigger lookups now.
         if lookup_lines:
             for f in result:
@@ -460,62 +541,193 @@ def from_list(klass, a_list):
                 result.append(FrameSummary(filename, lineno, name, line=line))
         return result
 
-    def format_frame_summary(self, frame_summary):
+    def format_frame_summary(self, frame_summary, **kwargs):
         """Format the lines for a single FrameSummary.
 
         Returns a string representing one frame involved in the stack. This
         gets called for every frame to be printed in the stack summary.
         """
+        colorize = kwargs.get("colorize", False)
         row = []
-        row.append('  File "{}", line {}, in {}\n'.format(
-            frame_summary.filename, frame_summary.lineno, frame_summary.name))
-        if frame_summary.line:
-            stripped_line = frame_summary.line.strip()
-            row.append('    {}\n'.format(stripped_line))
-
-            orig_line_len = len(frame_summary._original_line)
-            frame_line_len = len(frame_summary.line.lstrip())
-            stripped_characters = orig_line_len - frame_line_len
+        filename = frame_summary.filename
+        if frame_summary.filename.startswith("<stdin>-"):
+            filename = "<stdin>"
+        if colorize:
+            row.append('  File {}"{}"{}, line {}{}{}, in {}{}{}\n'.format(
+                    _ANSIColors.MAGENTA,
+                    filename,
+                    _ANSIColors.RESET,
+                    _ANSIColors.MAGENTA,
+                    frame_summary.lineno,
+                    _ANSIColors.RESET,
+                    _ANSIColors.MAGENTA,
+                    frame_summary.name,
+                    _ANSIColors.RESET,
+                    )
+            )
+        else:
+            row.append('  File "{}", line {}, in {}\n'.format(
+                filename, frame_summary.lineno, frame_summary.name))
+        if frame_summary._dedented_lines and frame_summary._dedented_lines.strip():
             if (
-                frame_summary.colno is not None
-                and frame_summary.end_colno is not None
+                frame_summary.colno is None or
+                frame_summary.end_colno is None
             ):
-                start_offset = _byte_offset_to_character_offset(
-                    frame_summary._original_line, frame_summary.colno) + 1
-                end_offset = _byte_offset_to_character_offset(
-                    frame_summary._original_line, frame_summary.end_colno) + 1
-
+                # only output first line if column information is missing
+                row.append(textwrap.indent(frame_summary.line, '    ') + "\n")
+            else:
+                # get first and last line
+                all_lines_original = frame_summary._original_lines.splitlines()
+                first_line = all_lines_original[0]
+                # assume all_lines_original has enough lines (since we constructed it)
+                last_line = all_lines_original[frame_summary.end_lineno - frame_summary.lineno]
+
+                # character index of the start/end of the instruction
+                start_offset = _byte_offset_to_character_offset(first_line, frame_summary.colno)
+                end_offset = _byte_offset_to_character_offset(last_line, frame_summary.end_colno)
+
+                all_lines = frame_summary._dedented_lines.splitlines()[
+                    :frame_summary.end_lineno - frame_summary.lineno + 1
+                ]
+
+                # adjust start/end offset based on dedent
+                dedent_characters = len(first_line) - len(all_lines[0])
+                start_offset = max(0, start_offset - dedent_characters)
+                end_offset = max(0, end_offset - dedent_characters)
+
+                # When showing this on a terminal, some of the non-ASCII characters
+                # might be rendered as double-width characters, so we need to take
+                # that into account when calculating the length of the line.
+                dp_start_offset = _display_width(all_lines[0], offset=start_offset)
+                dp_end_offset = _display_width(all_lines[-1], offset=end_offset)
+
+                # get exact code segment corresponding to the instruction
+                segment = "\n".join(all_lines)
+                segment = segment[start_offset:len(segment) - (len(all_lines[-1]) - end_offset)]
+
+                # attempt to parse for anchors
                 anchors = None
-                if frame_summary.lineno == frame_summary.end_lineno:
-                    with suppress(Exception):
-                        anchors = _extract_caret_anchors_from_line_segment(
-                            frame_summary._original_line[start_offset - 1:end_offset - 1]
-                        )
-                else:
-                    end_offset = stripped_characters + len(stripped_line)
-
-                # show indicators if primary char doesn't span the frame line
-                if end_offset - start_offset < len(stripped_line) or (
-                        anchors and anchors.right_start_offset - anchors.left_end_offset > 0):
-                    row.append('    ')
-                    row.append(' ' * (start_offset - stripped_characters))
-
-                    if anchors:
-                        row.append(anchors.primary_char * (anchors.left_end_offset))
-                        row.append(anchors.secondary_char * (anchors.right_start_offset - anchors.left_end_offset))
-                        row.append(anchors.primary_char * (end_offset - start_offset - anchors.right_start_offset))
-                    else:
-                        row.append('^' * (end_offset - start_offset))
+                with suppress(Exception):
+                    anchors = _extract_caret_anchors_from_line_segment(segment)
+
+                # only use carets if there are anchors or the carets do not span all lines
+                show_carets = False
+                if anchors or all_lines[0][:start_offset].lstrip() or all_lines[-1][end_offset:].rstrip():
+                    show_carets = True
+
+                result = []
+
+                # only display first line, last line, and lines around anchor start/end
+                significant_lines = {0, len(all_lines) - 1}
+
+                anchors_left_end_offset = 0
+                anchors_right_start_offset = 0
+                primary_char = "^"
+                secondary_char = "^"
+                if anchors:
+                    anchors_left_end_offset = anchors.left_end_offset
+                    anchors_right_start_offset = anchors.right_start_offset
+                    # computed anchor positions do not take start_offset into account,
+                    # so account for it here
+                    if anchors.left_end_lineno == 0:
+                        anchors_left_end_offset += start_offset
+                    if anchors.right_start_lineno == 0:
+                        anchors_right_start_offset += start_offset
+
+                    # account for display width
+                    anchors_left_end_offset = _display_width(
+                        all_lines[anchors.left_end_lineno], offset=anchors_left_end_offset
+                    )
+                    anchors_right_start_offset = _display_width(
+                        all_lines[anchors.right_start_lineno], offset=anchors_right_start_offset
+                    )
 
-                    row.append('\n')
+                    primary_char = anchors.primary_char
+                    secondary_char = anchors.secondary_char
+                    significant_lines.update(
+                        range(anchors.left_end_lineno - 1, anchors.left_end_lineno + 2)
+                    )
+                    significant_lines.update(
+                        range(anchors.right_start_lineno - 1, anchors.right_start_lineno + 2)
+                    )
 
+                # remove bad line numbers
+                significant_lines.discard(-1)
+                significant_lines.discard(len(all_lines))
+
+                def output_line(lineno):
+                    """output all_lines[lineno] along with carets"""
+                    result.append(all_lines[lineno] + "\n")
+                    if not show_carets:
+                        return
+                    num_spaces = len(all_lines[lineno]) - len(all_lines[lineno].lstrip())
+                    carets = []
+                    num_carets = dp_end_offset if lineno == len(all_lines) - 1 else _display_width(all_lines[lineno])
+                    # compute caret character for each position
+                    for col in range(num_carets):
+                        if col < num_spaces or (lineno == 0 and col < dp_start_offset):
+                            # before first non-ws char of the line, or before start of instruction
+                            carets.append(' ')
+                        elif anchors and (
+                            lineno > anchors.left_end_lineno or
+                            (lineno == anchors.left_end_lineno and col >= anchors_left_end_offset)
+                        ) and (
+                            lineno < anchors.right_start_lineno or
+                            (lineno == anchors.right_start_lineno and col < anchors_right_start_offset)
+                        ):
+                            # within anchors
+                            carets.append(secondary_char)
+                        else:
+                            carets.append(primary_char)
+                    if colorize:
+                        # Replace the previous line with a red version of it only in the parts covered
+                        # by the carets.
+                        line = result[-1]
+                        colorized_line_parts = []
+                        colorized_carets_parts = []
+
+                        for color, group in itertools.groupby(itertools.zip_longest(line, carets, fillvalue=""), key=lambda x: x[1]):
+                            caret_group = list(group)
+                            if color == "^":
+                                colorized_line_parts.append(_ANSIColors.BOLD_RED + "".join(char for char, _ in caret_group) + _ANSIColors.RESET)
+                                colorized_carets_parts.append(_ANSIColors.BOLD_RED + "".join(caret for _, caret in caret_group) + _ANSIColors.RESET)
+                            elif color == "~":
+                                colorized_line_parts.append(_ANSIColors.RED + "".join(char for char, _ in caret_group) + _ANSIColors.RESET)
+                                colorized_carets_parts.append(_ANSIColors.RED + "".join(caret for _, caret in caret_group) + _ANSIColors.RESET)
+                            else:
+                                colorized_line_parts.append("".join(char for char, _ in caret_group))
+                                colorized_carets_parts.append("".join(caret for _, caret in caret_group))
+
+                        colorized_line = "".join(colorized_line_parts)
+                        colorized_carets = "".join(colorized_carets_parts)
+                        result[-1] = colorized_line
+                        result.append(colorized_carets + "\n")
+                    else:
+                        result.append("".join(carets) + "\n")
+
+                # display significant lines
+                sig_lines_list = sorted(significant_lines)
+                for i, lineno in enumerate(sig_lines_list):
+                    if i:
+                        linediff = lineno - sig_lines_list[i - 1]
+                        if linediff == 2:
+                            # 1 line in between - just output it
+                            output_line(lineno - 1)
+                        elif linediff > 2:
+                            # > 1 line in between - abbreviate
+                            result.append(f"...<{linediff - 1} lines>...\n")
+                    output_line(lineno)
+
+                row.append(
+                    textwrap.indent(textwrap.dedent("".join(result)), '    ', lambda line: True)
+                )
         if frame_summary.locals:
             for name, value in sorted(frame_summary.locals.items()):
                 row.append('    {name} = {value}\n'.format(name=name, value=value))
 
         return ''.join(row)
 
-    def format(self):
+    def format(self, **kwargs):
         """Format the stack ready for printing.
 
         Returns a list of strings ready for printing.  Each string in the
@@ -527,13 +739,14 @@ def format(self):
         repetitions are shown, followed by a summary line stating the exact
         number of further repetitions.
         """
+        colorize = kwargs.get("colorize", False)
         result = []
         last_file = None
         last_line = None
         last_name = None
         count = 0
         for frame_summary in self:
-            formatted_frame = self.format_frame_summary(frame_summary)
+            formatted_frame = self.format_frame_summary(frame_summary, colorize=colorize)
             if formatted_frame is None:
                 continue
             if (last_file is None or last_file != frame_summary.filename or
@@ -571,7 +784,9 @@ def _byte_offset_to_character_offset(str, offset):
 _Anchors = collections.namedtuple(
     "_Anchors",
     [
+        "left_end_lineno",
         "left_end_offset",
+        "right_start_lineno",
         "right_start_offset",
         "primary_char",
         "secondary_char",
@@ -580,42 +795,173 @@ def _byte_offset_to_character_offset(str, offset):
 )
 
 def _extract_caret_anchors_from_line_segment(segment):
+    """
+    Given source code `segment` corresponding to a FrameSummary, determine:
+        - for binary ops, the location of the binary op
+        - for indexing and function calls, the location of the brackets.
+    `segment` is expected to be a valid Python expression.
+    """
     import ast
 
     try:
-        tree = ast.parse(segment)
+        # Without parentheses, `segment` is parsed as a statement.
+        # Binary ops, subscripts, and calls are expressions, so
+        # we can wrap them with parentheses to parse them as
+        # (possibly multi-line) expressions.
+        # e.g. if we try to highlight the addition in
+        # x = (
+        #     a +
+        #     b
+        # )
+        # then we would ast.parse
+        #     a +
+        #     b
+        # which is not a valid statement because of the newline.
+        # Adding brackets makes it a valid expression.
+        # (
+        #     a +
+        #     b
+        # )
+        # Line locations will be different than the original,
+        # which is taken into account later on.
+        tree = ast.parse(f"(\n{segment}\n)")
     except SyntaxError:
         return None
 
     if len(tree.body) != 1:
         return None
 
-    normalize = lambda offset: _byte_offset_to_character_offset(segment, offset)
+    lines = segment.splitlines()
+
+    def normalize(lineno, offset):
+        """Get character index given byte offset"""
+        return _byte_offset_to_character_offset(lines[lineno], offset)
+
+    def next_valid_char(lineno, col):
+        """Gets the next valid character index in `lines`, if
+        the current location is not valid. Handles empty lines.
+        """
+        while lineno < len(lines) and col >= len(lines[lineno]):
+            col = 0
+            lineno += 1
+        assert lineno < len(lines) and col < len(lines[lineno])
+        return lineno, col
+
+    def increment(lineno, col):
+        """Get the next valid character index in `lines`."""
+        col += 1
+        lineno, col = next_valid_char(lineno, col)
+        return lineno, col
+
+    def nextline(lineno, col):
+        """Get the next valid character at least on the next line"""
+        col = 0
+        lineno += 1
+        lineno, col = next_valid_char(lineno, col)
+        return lineno, col
+
+    def increment_until(lineno, col, stop):
+        """Get the next valid non-"\\#" character that satisfies the `stop` predicate"""
+        while True:
+            ch = lines[lineno][col]
+            if ch in "\\#":
+                lineno, col = nextline(lineno, col)
+            elif not stop(ch):
+                lineno, col = increment(lineno, col)
+            else:
+                break
+        return lineno, col
+
+    def setup_positions(expr, force_valid=True):
+        """Get the lineno/col position of the end of `expr`. If `force_valid` is True,
+        forces the position to be a valid character (e.g. if the position is beyond the
+        end of the line, move to the next line)
+        """
+        # -2 since end_lineno is 1-indexed and because we added an extra
+        # bracket + newline to `segment` when calling ast.parse
+        lineno = expr.end_lineno - 2
+        col = normalize(lineno, expr.end_col_offset)
+        return next_valid_char(lineno, col) if force_valid else (lineno, col)
+
     statement = tree.body[0]
     match statement:
         case ast.Expr(expr):
             match expr:
                 case ast.BinOp():
-                    operator_start = normalize(expr.left.end_col_offset)
-                    operator_end = normalize(expr.right.col_offset)
-                    operator_str = segment[operator_start:operator_end]
-                    operator_offset = len(operator_str) - len(operator_str.lstrip())
+                    # ast gives these locations for BinOp subexpressions
+                    # ( left_expr ) + ( right_expr )
+                    #   left^^^^^       right^^^^^
+                    lineno, col = setup_positions(expr.left)
+
+                    # First operator character is the first non-space/')' character
+                    lineno, col = increment_until(lineno, col, lambda x: not x.isspace() and x != ')')
 
-                    left_anchor = expr.left.end_col_offset + operator_offset
-                    right_anchor = left_anchor + 1
+                    # binary op is 1 or 2 characters long, on the same line,
+                    # before the right subexpression
+                    right_col = col + 1
                     if (
-                        operator_offset + 1 < len(operator_str)
-                        and not operator_str[operator_offset + 1].isspace()
+                        right_col < len(lines[lineno])
+                        and (
+                            # operator char should not be in the right subexpression
+                            expr.right.lineno - 2 > lineno or
+                            right_col < normalize(expr.right.lineno - 2, expr.right.col_offset)
+                        )
+                        and not (ch := lines[lineno][right_col]).isspace()
+                        and ch not in "\\#"
                     ):
-                        right_anchor += 1
-                    return _Anchors(normalize(left_anchor), normalize(right_anchor))
+                        right_col += 1
+
+                    # right_col can be invalid since it is exclusive
+                    return _Anchors(lineno, col, lineno, right_col)
                 case ast.Subscript():
-                    subscript_start = normalize(expr.value.end_col_offset)
-                    subscript_end = normalize(expr.slice.end_col_offset + 1)
-                    return _Anchors(subscript_start, subscript_end)
+                    # ast gives these locations for value and slice subexpressions
+                    # ( value_expr ) [ slice_expr ]
+                    #   value^^^^^     slice^^^^^
+                    # subscript^^^^^^^^^^^^^^^^^^^^
+
+                    # find left bracket
+                    left_lineno, left_col = setup_positions(expr.value)
+                    left_lineno, left_col = increment_until(left_lineno, left_col, lambda x: x == '[')
+                    # find right bracket (final character of expression)
+                    right_lineno, right_col = setup_positions(expr, force_valid=False)
+                    return _Anchors(left_lineno, left_col, right_lineno, right_col)
+                case ast.Call():
+                    # ast gives these locations for function call expressions
+                    # ( func_expr ) (args, kwargs)
+                    #   func^^^^^
+                    # call^^^^^^^^^^^^^^^^^^^^^^^^
+
+                    # find left bracket
+                    left_lineno, left_col = setup_positions(expr.func)
+                    left_lineno, left_col = increment_until(left_lineno, left_col, lambda x: x == '(')
+                    # find right bracket (final character of expression)
+                    right_lineno, right_col = setup_positions(expr, force_valid=False)
+                    return _Anchors(left_lineno, left_col, right_lineno, right_col)
 
     return None
 
+_WIDE_CHAR_SPECIFIERS = "WF"
+
+def _display_width(line, offset=None):
+    """Calculate the extra amount of width space the given source
+    code segment might take if it were to be displayed on a fixed
+    width output device. Supports wide unicode characters and emojis."""
+
+    if offset is None:
+        offset = len(line)
+
+    # Fast track for ASCII-only strings
+    if line.isascii():
+        return offset
+
+    import unicodedata
+
+    return sum(
+        2 if unicodedata.east_asian_width(char) in _WIDE_CHAR_SPECIFIERS else 1
+        for char in line[:offset]
+    )
+
+
 
 class _ExceptionPrintContext:
     def __init__(self):
@@ -658,10 +1004,13 @@ class TracebackException:
 
     - :attr:`__cause__` A TracebackException of the original *__cause__*.
     - :attr:`__context__` A TracebackException of the original *__context__*.
+    - :attr:`exceptions` For exception groups - a list of TracebackException
+      instances for the nested *exceptions*.  ``None`` for other exceptions.
     - :attr:`__suppress_context__` The *__suppress_context__* value from the
       original exception.
     - :attr:`stack` A `StackSummary` representing the traceback.
-    - :attr:`exc_type` The class of the original traceback.
+    - :attr:`exc_type` (deprecated) The class of the original traceback.
+    - :attr:`exc_type_str` String display of exc_type
     - :attr:`filename` For syntax errors - the filename where the error
       occurred.
     - :attr:`lineno` For syntax errors - the linenumber where the error
@@ -672,14 +1021,14 @@ class TracebackException:
       occurred.
     - :attr:`offset` For syntax errors - the offset into the text where the
       error occurred.
-    - :attr:`end_offset` For syntax errors - the offset into the text where the
-      error occurred. Can be `None` if not present.
+    - :attr:`end_offset` For syntax errors - the end offset into the text where
+      the error occurred. Can be `None` if not present.
     - :attr:`msg` For syntax errors - the compiler error message.
     """
 
     def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None,
             lookup_lines=True, capture_locals=False, compact=False,
-            max_group_width=15, max_group_depth=10, _seen=None):
+            max_group_width=15, max_group_depth=10, save_exc_type=True, _seen=None):
         # NB: we need to accept exc_traceback, exc_value, exc_traceback to
         # permit backwards compat with the existing API, otherwise we
         # need stub thunk objects just to glue it together.
@@ -696,12 +1045,23 @@ def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None,
             _walk_tb_with_full_positions(exc_traceback),
             limit=limit, lookup_lines=lookup_lines,
             capture_locals=capture_locals)
-        self.exc_type = exc_type
+
+        self._exc_type = exc_type if save_exc_type else None
+
         # Capture now to permit freeing resources: only complication is in the
         # unofficial API _format_final_exc_line
         self._str = _safe_string(exc_value, 'exception')
         self.__notes__ = getattr(exc_value, '__notes__', None)
 
+        self._is_syntax_error = False
+        self._have_exc_type = exc_type is not None
+        if exc_type is not None:
+            self.exc_type_qualname = exc_type.__qualname__
+            self.exc_type_module = exc_type.__module__
+        else:
+            self.exc_type_qualname = None
+            self.exc_type_module = None
+
         if exc_type and issubclass(exc_type, SyntaxError):
             # Handle SyntaxError's specially
             self.filename = exc_value.filename
@@ -713,6 +1073,7 @@ def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None,
             self.offset = exc_value.offset
             self.end_offset = exc_value.end_offset
             self.msg = exc_value.msg
+            self._is_syntax_error = True
         elif exc_type and issubclass(exc_type, ImportError) and \
                 getattr(exc_value, "name_from", None) is not None:
             wrong_name = getattr(exc_value, "name_from", None)
@@ -729,9 +1090,9 @@ def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None,
                 wrong_name = getattr(exc_value, "name", None)
                 if wrong_name is not None and wrong_name in sys.stdlib_module_names:
                     if suggestion:
-                        self._str += f" Or did you forget to import '{wrong_name}'"
+                        self._str += f" Or did you forget to import '{wrong_name}'?"
                     else:
-                        self._str += f". Did you forget to import '{wrong_name}'"
+                        self._str += f". Did you forget to import '{wrong_name}'?"
         if lookup_lines:
             self._load_lines()
         self.__suppress_context__ = \
@@ -811,6 +1172,24 @@ def from_exception(cls, exc, *args, **kwargs):
         """Create a TracebackException from an exception."""
         return cls(type(exc), exc, exc.__traceback__, *args, **kwargs)
 
+    @property
+    def exc_type(self):
+        warnings.warn('Deprecated in 3.13. Use exc_type_str instead.',
+                      DeprecationWarning, stacklevel=2)
+        return self._exc_type
+
+    @property
+    def exc_type_str(self):
+        if not self._have_exc_type:
+            return None
+        stype = self.exc_type_qualname
+        smod = self.exc_type_module
+        if smod not in ("__main__", "builtins"):
+            if not isinstance(smod, str):
+                smod = "<unknown>"
+            stype = smod + '.' + stype
+        return stype
+
     def _load_lines(self):
         """Private API. force all lines in the stack to be loaded."""
         for frame in self.stack:
@@ -824,34 +1203,45 @@ def __eq__(self, other):
     def __str__(self):
         return self._str
 
-    def format_exception_only(self):
+    def format_exception_only(self, *, show_group=False, _depth=0, **kwargs):
         """Format the exception part of the traceback.
 
         The return value is a generator of strings, each ending in a newline.
 
-        Normally, the generator emits a single string; however, for
-        SyntaxError exceptions, it emits several lines that (when
-        printed) display detailed information about where the syntax
-        error occurred.
-
-        The message indicating which exception occurred is always the last
-        string in the output.
+        Generator yields the exception message.
+        For :exc:`SyntaxError` exceptions, it
+        also yields (before the exception message)
+        several lines that (when printed)
+        display detailed information about where the syntax error occurred.
+        Following the message, generator also yields
+        all the exception's ``__notes__``.
+
+        When *show_group* is ``True``, and the exception is an instance of
+        :exc:`BaseExceptionGroup`, the nested exceptions are included as
+        well, recursively, with indentation relative to their nesting depth.
         """
-        if self.exc_type is None:
-            yield _format_final_exc_line(None, self._str)
-            return
+        colorize = kwargs.get("colorize", False)
 
-        stype = self.exc_type.__qualname__
-        smod = self.exc_type.__module__
-        if smod not in ("__main__", "builtins"):
-            if not isinstance(smod, str):
-                smod = "<unknown>"
-            stype = smod + '.' + stype
+        indent = 3 * _depth * ' '
+        if not self._have_exc_type:
+            yield indent + _format_final_exc_line(None, self._str, colorize=colorize)
+            return
 
-        if not issubclass(self.exc_type, SyntaxError):
-            yield _format_final_exc_line(stype, self._str)
+        stype = self.exc_type_str
+        if not self._is_syntax_error:
+            if _depth > 0:
+                # Nested exceptions needs correct handling of multiline messages.
+                formatted = _format_final_exc_line(
+                    stype, self._str, insert_final_newline=False, colorize=colorize
+                ).split('\n')
+                yield from [
+                    indent + l + '\n'
+                    for l in formatted
+                ]
+            else:
+                yield _format_final_exc_line(stype, self._str, colorize=colorize)
         else:
-            yield from self._format_syntax_error(stype)
+            yield from [indent + l for l in self._format_syntax_error(stype, colorize=colorize)]
 
         if (
             isinstance(self.__notes__, collections.abc.Sequence)
@@ -859,17 +1249,32 @@ def format_exception_only(self):
         ):
             for note in self.__notes__:
                 note = _safe_string(note, 'note')
-                yield from [l + '\n' for l in note.split('\n')]
+                yield from [indent + l + '\n' for l in note.split('\n')]
         elif self.__notes__ is not None:
-            yield "{}\n".format(_safe_string(self.__notes__, '__notes__', func=repr))
+            yield indent + "{}\n".format(_safe_string(self.__notes__, '__notes__', func=repr))
+
+        if self.exceptions and show_group:
+            for ex in self.exceptions:
+                yield from ex.format_exception_only(show_group=show_group, _depth=_depth+1, colorize=colorize)
 
-    def _format_syntax_error(self, stype):
+    def _format_syntax_error(self, stype, **kwargs):
         """Format SyntaxError exceptions (internal helper)."""
         # Show exactly where the problem was found.
+        colorize = kwargs.get("colorize", False)
         filename_suffix = ''
         if self.lineno is not None:
-            yield '  File "{}", line {}\n'.format(
-                self.filename or "<string>", self.lineno)
+            if colorize:
+                yield '  File {}"{}"{}, line {}{}{}\n'.format(
+                    _ANSIColors.MAGENTA,
+                    self.filename or "<string>",
+                    _ANSIColors.RESET,
+                    _ANSIColors.MAGENTA,
+                    self.lineno,
+                    _ANSIColors.RESET,
+                    )
+            else:
+                yield '  File "{}", line {}\n'.format(
+                    self.filename or "<string>", self.lineno)
         elif self.filename is not None:
             filename_suffix = ' ({})'.format(self.filename)
 
@@ -881,25 +1286,58 @@ def _format_syntax_error(self, stype):
             rtext = text.rstrip('\n')
             ltext = rtext.lstrip(' \n\f')
             spaces = len(rtext) - len(ltext)
-            yield '    {}\n'.format(ltext)
-
-            if self.offset is not None:
+            if self.offset is None:
+                yield '    {}\n'.format(ltext)
+            else:
                 offset = self.offset
                 end_offset = self.end_offset if self.end_offset not in {None, 0} else offset
-                if offset == end_offset or end_offset == -1:
+                if self.text and offset > len(self.text):
+                    offset = len(self.text) + 1
+                if self.text and end_offset > len(self.text):
+                    end_offset = len(self.text) + 1
+                if offset >= end_offset or end_offset < 0:
                     end_offset = offset + 1
 
                 # Convert 1-based column offset to 0-based index into stripped text
                 colno = offset - 1 - spaces
                 end_colno = end_offset - 1 - spaces
+                caretspace = ' '
                 if colno >= 0:
                     # non-space whitespace (likes tabs) must be kept for alignment
                     caretspace = ((c if c.isspace() else ' ') for c in ltext[:colno])
-                    yield '    {}{}'.format("".join(caretspace), ('^' * (end_colno - colno) + "\n"))
+                    start_color = end_color = ""
+                    if colorize:
+                        # colorize from colno to end_colno
+                        ltext = (
+                            ltext[:colno] +
+                            _ANSIColors.BOLD_RED + ltext[colno:end_colno] + _ANSIColors.RESET +
+                            ltext[end_colno:]
+                        )
+                        start_color = _ANSIColors.BOLD_RED
+                        end_color = _ANSIColors.RESET
+                    yield '    {}\n'.format(ltext)
+                    yield '    {}{}{}{}\n'.format(
+                        "".join(caretspace),
+                        start_color,
+                        ('^' * (end_colno - colno)),
+                        end_color,
+                    )
+                else:
+                    yield '    {}\n'.format(ltext)
         msg = self.msg or "<no detail available>"
-        yield "{}: {}{}\n".format(stype, msg, filename_suffix)
+        if colorize:
+            yield "{}{}{}: {}{}{}{}\n".format(
+                _ANSIColors.BOLD_MAGENTA,
+                stype,
+                _ANSIColors.RESET,
+                _ANSIColors.MAGENTA,
+                msg,
+                _ANSIColors.RESET,
+                filename_suffix)
+        else:
+            yield "{}: {}{}\n".format(stype, msg, filename_suffix)
 
-    def format(self, *, chain=True, _ctx=None):
+    def format(self, *, chain=True, _ctx=None, **kwargs):
         """Format the exception.
 
         If chain is not *True*, *__cause__* and *__context__* will not be formatted.
@@ -911,7 +1349,7 @@ def format(self, *, chain=True, _ctx=None):
         The message indicating which exception occurred is always the last
         string in the output.
         """
-
+        colorize = kwargs.get("colorize", False)
         if _ctx is None:
             _ctx = _ExceptionPrintContext()
 
@@ -941,8 +1379,8 @@ def format(self, *, chain=True, _ctx=None):
             if exc.exceptions is None:
                 if exc.stack:
                     yield from _ctx.emit('Traceback (most recent call last):\n')
-                    yield from _ctx.emit(exc.stack.format())
-                yield from _ctx.emit(exc.format_exception_only())
+                    yield from _ctx.emit(exc.stack.format(colorize=colorize))
+                yield from _ctx.emit(exc.format_exception_only(colorize=colorize))
             elif _ctx.exception_group_depth > self.max_group_depth:
                 # exception group, but depth exceeds limit
                 yield from _ctx.emit(
@@ -957,9 +1395,9 @@ def format(self, *, chain=True, _ctx=None):
                     yield from _ctx.emit(
                         'Exception Group Traceback (most recent call last):\n',
                         margin_char = '+' if is_toplevel else None)
-                    yield from _ctx.emit(exc.stack.format())
+                    yield from _ctx.emit(exc.stack.format(colorize=colorize))
 
-                yield from _ctx.emit(exc.format_exception_only())
+                yield from _ctx.emit(exc.format_exception_only(colorize=colorize))
                 num_excs = len(exc.exceptions)
                 if num_excs <= self.max_group_width:
                     n = num_excs
@@ -1000,11 +1438,12 @@ def format(self, *, chain=True, _ctx=None):
                     _ctx.exception_group_depth = 0
 
 
-    def print(self, *, file=None, chain=True):
+    def print(self, *, file=None, chain=True, **kwargs):
         """Print the result of self.format(chain=chain) to 'file'."""
+        colorize = kwargs.get("colorize", False)
         if file is None:
             file = sys.stderr
-        for line in self.format(chain=chain):
+        for line in self.format(chain=chain, colorize=colorize):
             print(line, file=file, end="")
 
 
diff --git a/Lib/tty.py b/Lib/tty.py
index a72eb6755450bb..283e5c334f5751 100644
--- a/Lib/tty.py
+++ b/Lib/tty.py
@@ -4,9 +4,9 @@
 
 from termios import *
 
-__all__ = ["setraw", "setcbreak"]
+__all__ = ["cfmakeraw", "cfmakecbreak", "setraw", "setcbreak"]
 
-# Indexes for termios list.
+# Indices for termios list.
 IFLAG = 0
 OFLAG = 1
 CFLAG = 2
@@ -15,22 +15,62 @@
 OSPEED = 5
 CC = 6
 
-def setraw(fd, when=TCSAFLUSH):
-    """Put terminal into a raw mode."""
-    mode = tcgetattr(fd)
-    mode[IFLAG] = mode[IFLAG] & ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON)
-    mode[OFLAG] = mode[OFLAG] & ~(OPOST)
-    mode[CFLAG] = mode[CFLAG] & ~(CSIZE | PARENB)
-    mode[CFLAG] = mode[CFLAG] | CS8
-    mode[LFLAG] = mode[LFLAG] & ~(ECHO | ICANON | IEXTEN | ISIG)
+def cfmakeraw(mode):
+    """Make termios mode raw."""
+    # Clear all POSIX.1-2017 input mode flags.
+    # See chapter 11 "General Terminal Interface"
+    # of POSIX.1-2017 Base Definitions.
+    mode[IFLAG] &= ~(IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP |
+                     INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF)
+
+    # Do not post-process output.
+    mode[OFLAG] &= ~OPOST
+
+    # Disable parity generation and detection; clear character size mask;
+    # let character size be 8 bits.
+    mode[CFLAG] &= ~(PARENB | CSIZE)
+    mode[CFLAG] |= CS8
+
+    # Clear all POSIX.1-2017 local mode flags.
+    mode[LFLAG] &= ~(ECHO | ECHOE | ECHOK | ECHONL | ICANON |
+                     IEXTEN | ISIG | NOFLSH | TOSTOP)
+
+    # POSIX.1-2017, 11.1.7 Non-Canonical Mode Input Processing,
+    # Case B: MIN>0, TIME=0
+    # A pending read shall block until MIN (here 1) bytes are received,
+    # or a signal is received.
+    mode[CC] = list(mode[CC])
     mode[CC][VMIN] = 1
     mode[CC][VTIME] = 0
-    tcsetattr(fd, when, mode)
 
-def setcbreak(fd, when=TCSAFLUSH):
-    """Put terminal into a cbreak mode."""
-    mode = tcgetattr(fd)
-    mode[LFLAG] = mode[LFLAG] & ~(ECHO | ICANON)
+def cfmakecbreak(mode):
+    """Make termios mode cbreak."""
+    # Do not map CR to NL on input.
+    mode[IFLAG] &= ~(ICRNL)
+
+    # Do not echo characters; disable canonical input.
+    mode[LFLAG] &= ~(ECHO | ICANON)
+
+    # POSIX.1-2017, 11.1.7 Non-Canonical Mode Input Processing,
+    # Case B: MIN>0, TIME=0
+    # A pending read shall block until MIN (here 1) bytes are received,
+    # or a signal is received.
+    mode[CC] = list(mode[CC])
     mode[CC][VMIN] = 1
     mode[CC][VTIME] = 0
-    tcsetattr(fd, when, mode)
+
+def setraw(fd, when=TCSAFLUSH):
+    """Put terminal into raw mode."""
+    mode = tcgetattr(fd)
+    new = list(mode)
+    cfmakeraw(new)
+    tcsetattr(fd, when, new)
+    return mode
+
+def setcbreak(fd, when=TCSAFLUSH):
+    """Put terminal into cbreak mode."""
+    mode = tcgetattr(fd)
+    new = list(mode)
+    cfmakecbreak(new)
+    tcsetattr(fd, when, new)
+    return mode
diff --git a/Lib/turtle.py b/Lib/turtle.py
index cf111158b7c149..7bfe81351b0b34 100644
--- a/Lib/turtle.py
+++ b/Lib/turtle.py
@@ -104,7 +104,6 @@
 import time
 import inspect
 import sys
-import warnings
 
 from os.path import isfile, split, join
 from copy import deepcopy
@@ -127,7 +126,7 @@
         'isvisible', 'left', 'lt', 'onclick', 'ondrag', 'onrelease', 'pd',
         'pen', 'pencolor', 'pendown', 'pensize', 'penup', 'pos', 'position',
         'pu', 'radians', 'right', 'reset', 'resizemode', 'rt',
-        'seth', 'setheading', 'setpos', 'setposition', 'settiltangle',
+        'seth', 'setheading', 'setpos', 'setposition',
         'setundobuffer', 'setx', 'sety', 'shape', 'shapesize', 'shapetransform', 'shearfactor', 'showturtle',
         'speed', 'st', 'stamp', 'teleport', 'tilt', 'tiltangle', 'towards',
         'turtlesize', 'undo', 'undobufferentries', 'up', 'width',
@@ -875,7 +874,7 @@ def __init__(self, type_, data=None):
             if isinstance(data, str):
                 if data.lower().endswith(".gif") and isfile(data):
                     data = TurtleScreen._image(data)
-                # else data assumed to be Photoimage
+                # else data assumed to be PhotoImage
         elif type_ == "compound":
             data = []
         else:
@@ -2896,33 +2895,6 @@ def shearfactor(self, shear=None):
             return self._shearfactor
         self.pen(resizemode="user", shearfactor=shear)
 
-    def settiltangle(self, angle):
-        """Rotate the turtleshape to point in the specified direction
-
-        Argument: angle -- number
-
-        Rotate the turtleshape to point in the direction specified by angle,
-        regardless of its current tilt-angle. DO NOT change the turtle's
-        heading (direction of movement).
-
-        Deprecated since Python 3.1
-
-        Examples (for a Turtle instance named turtle):
-        >>> turtle.shape("circle")
-        >>> turtle.shapesize(5,2)
-        >>> turtle.settiltangle(45)
-        >>> turtle.stamp()
-        >>> turtle.fd(50)
-        >>> turtle.settiltangle(-45)
-        >>> turtle.stamp()
-        >>> turtle.fd(50)
-        """
-        warnings._deprecated("turtle.RawTurtle.settiltangle()",
-                             "{name!r} is deprecated since Python 3.1 and scheduled "
-                             "for removal in Python {remove}. Use tiltangle() instead.",
-                             remove=(3, 13))
-        self.tiltangle(angle)
-
     def tiltangle(self, angle=None):
         """Set or return the current tilt-angle.
 
@@ -2935,9 +2907,6 @@ def tiltangle(self, angle=None):
         between the orientation of the turtleshape and the heading of the
         turtle (its direction of movement).
 
-        (Incorrectly marked as deprecated since Python 3.1, it is really
-        settiltangle that is deprecated.)
-
         Examples (for a Turtle instance named turtle):
         >>> turtle.shape("circle")
         >>> turtle.shapesize(5, 2)
@@ -3951,28 +3920,33 @@ def getmethparlist(ob):
     function definition and the second is suitable for use in function
     call.  The "self" parameter is not included.
     """
-    defText = callText = ""
+    orig_sig = inspect.signature(ob)
     # bit of a hack for methods - turn it into a function
     # but we drop the "self" param.
     # Try and build one for Python defined functions
-    args, varargs, varkw = inspect.getargs(ob.__code__)
-    items2 = args[1:]
-    realArgs = args[1:]
-    defaults = ob.__defaults__ or []
-    defaults = ["=%r" % (value,) for value in defaults]
-    defaults = [""] * (len(realArgs)-len(defaults)) + defaults
-    items1 = [arg + dflt for arg, dflt in zip(realArgs, defaults)]
-    if varargs is not None:
-        items1.append("*" + varargs)
-        items2.append("*" + varargs)
-    if varkw is not None:
-        items1.append("**" + varkw)
-        items2.append("**" + varkw)
-    defText = ", ".join(items1)
-    defText = "(%s)" % defText
-    callText = ", ".join(items2)
-    callText = "(%s)" % callText
-    return defText, callText
+    func_sig = orig_sig.replace(
+        parameters=list(orig_sig.parameters.values())[1:],
+    )
+
+    call_args = []
+    for param in func_sig.parameters.values():
+        match param.kind:
+            case (
+                inspect.Parameter.POSITIONAL_ONLY
+                | inspect.Parameter.POSITIONAL_OR_KEYWORD
+            ):
+                call_args.append(param.name)
+            case inspect.Parameter.VAR_POSITIONAL:
+                call_args.append(f'*{param.name}')
+            case inspect.Parameter.KEYWORD_ONLY:
+                call_args.append(f'{param.name}={param.name}')
+            case inspect.Parameter.VAR_KEYWORD:
+                call_args.append(f'**{param.name}')
+            case _:
+                raise RuntimeError('Unsupported parameter kind', param.kind)
+    call_text = f'({', '.join(call_args)})'
+
+    return str(func_sig), call_text
 
 def _turtle_docrevise(docstr):
     """To reduce docstrings from RawTurtle class for functions
diff --git a/Lib/turtledemo/__main__.py b/Lib/turtledemo/__main__.py
index f6c9d6aa6f9a32..2ab6c15e2c079e 100755
--- a/Lib/turtledemo/__main__.py
+++ b/Lib/turtledemo/__main__.py
@@ -161,7 +161,7 @@ def __init__(self, filename=None):
                               label='Help', underline=0)
         root['menu'] = self.mBar
 
-        pane = PanedWindow(orient=HORIZONTAL, sashwidth=5,
+        pane = PanedWindow(root, orient=HORIZONTAL, sashwidth=5,
                            sashrelief=SOLID, bg='#ddd')
         pane.add(self.makeTextFrame(pane))
         pane.add(self.makeGraphFrame(pane))
diff --git a/Lib/types.py b/Lib/types.py
index 6110e6e1de7249..1484c22ee9dffa 100644
--- a/Lib/types.py
+++ b/Lib/types.py
@@ -1,6 +1,7 @@
 """
 Define names for built-in types that aren't directly accessible as a builtin.
 """
+
 import sys
 
 # Iterators in Python aren't a matter of type but of protocol.  A large
@@ -165,14 +166,11 @@ class Baz(list[str]): ...
         assert get_original_bases(int) == (object,)
     """
     try:
-        return cls.__orig_bases__
+        return cls.__dict__.get("__orig_bases__", cls.__bases__)
     except AttributeError:
-        try:
-            return cls.__bases__
-        except AttributeError:
-            raise TypeError(
-                f'Expected an instance of type, not {type(cls).__name__!r}'
-            ) from None
+        raise TypeError(
+            f"Expected an instance of type, not {type(cls).__name__!r}"
+        ) from None
 
 
 class DynamicClassAttribute:
@@ -333,4 +331,11 @@ def wrapped(*args, **kwargs):
 NoneType = type(None)
 NotImplementedType = type(NotImplemented)
 
+def __getattr__(name):
+    if name == 'CapsuleType':
+        import _socket
+        return type(_socket.CAPI)
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
 __all__ = [n for n in globals() if n[:1] != '_']
+__all__ += ['CapsuleType']
diff --git a/Lib/typing.py b/Lib/typing.py
index 61aed0980ac2eb..61b88a560e9dc5 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -1,43 +1,44 @@
 """
-The typing module: Support for gradual typing as defined by PEP 484.
-
-At large scale, the structure of the module is following:
-* Imports and exports, all public names should be explicitly added to __all__.
-* Internal helper functions: these should never be used in code outside this module.
-* _SpecialForm and its instances (special forms):
-  Any, NoReturn, Never, ClassVar, Union, Optional, Concatenate, Unpack
-* Classes whose instances can be type arguments in addition to types:
-  ForwardRef, TypeVar and ParamSpec
-* The core of internal generics API: _GenericAlias and _VariadicGenericAlias, the latter is
-  currently only used by Tuple and Callable. All subscripted types like X[int], Union[int, str],
-  etc., are instances of either of these classes.
-* The public counterpart of the generics API consists of two classes: Generic and Protocol.
-* Public helper functions: get_type_hints, overload, cast, no_type_check,
-  no_type_check_decorator.
-* Generic aliases for collections.abc ABCs and few additional protocols.
+The typing module: Support for gradual typing as defined by PEP 484 and subsequent PEPs.
+
+Among other things, the module includes the following:
+* Generic, Protocol, and internal machinery to support generic aliases.
+  All subscripted types like X[int], Union[int, str] are generic aliases.
+* Various "special forms" that have unique meanings in type annotations:
+  NoReturn, Never, ClassVar, Self, Concatenate, Unpack, and others.
+* Classes whose instances can be type arguments to generic classes and functions:
+  TypeVar, ParamSpec, TypeVarTuple.
+* Public helper functions: get_type_hints, overload, cast, final, and others.
+* Several protocols to support duck-typing:
+  SupportsFloat, SupportsIndex, SupportsAbs, and others.
 * Special types: NewType, NamedTuple, TypedDict.
-* Wrapper submodules for re and io related types.
+* Deprecated aliases for builtin types and collections.abc ABCs.
+
+Any name not present in __all__ is an implementation detail
+that may be changed without notice. Use at your own risk!
 """
 
 from abc import abstractmethod, ABCMeta
 import collections
 from collections import defaultdict
 import collections.abc
-import contextlib
+import copyreg
 import functools
 import operator
-import re as stdlib_re  # Avoid confusion with the re we export.
 import sys
 import types
-import warnings
 from types import WrapperDescriptorType, MethodWrapperType, MethodDescriptorType, GenericAlias
 
-
-try:
-    from _typing import _idfunc
-except ImportError:
-    def _idfunc(_, x):
-        return x
+from _typing import (
+    _idfunc,
+    TypeVar,
+    ParamSpec,
+    TypeVarTuple,
+    ParamSpecArgs,
+    ParamSpecKwargs,
+    TypeAliasType,
+    Generic,
+)
 
 # Please keep __all__ alphabetized within each category.
 __all__ = [
@@ -128,7 +129,9 @@ def _idfunc(_, x):
     'get_args',
     'get_origin',
     'get_overloads',
+    'get_protocol_members',
     'get_type_hints',
+    'is_protocol',
     'is_typeddict',
     'LiteralString',
     'Never',
@@ -149,13 +152,10 @@ def _idfunc(_, x):
     'TYPE_CHECKING',
     'TypeAlias',
     'TypeGuard',
+    'TypeAliasType',
     'Unpack',
 ]
 
-# The pseudo-submodules 're' and 'io' are part of the public
-# namespace, but excluded from __all__ because they might stomp on
-# legitimate imports of those modules.
-
 
 def _type_convert(arg, module=None, *, allow_special_forms=False):
     """For converting None to type(None), and strings to ForwardRef."""
@@ -172,7 +172,7 @@ def _type_check(arg, msg, is_argument=True, module=None, *, allow_special_forms=
     As a special case, accept None and return type(None) instead. Also wrap strings
     into ForwardRef instances. Consider several corner cases, for example plain
     special forms like Union are not valid, while Union[int, str] is OK, etc.
-    The msg argument is a human-readable error message, e.g::
+    The msg argument is a human-readable error message, e.g.::
 
         "Union[arg, ...]: arg should be a type."
 
@@ -208,10 +208,16 @@ def _should_unflatten_callable_args(typ, args):
     """Internal helper for munging collections.abc.Callable's __args__.
 
     The canonical representation for a Callable's __args__ flattens the
-    argument types, see https://bugs.python.org/issue42195. For example:
+    argument types, see https://github.com/python/cpython/issues/86361.
 
-        collections.abc.Callable[[int, int], str].__args__ == (int, int, str)
-        collections.abc.Callable[ParamSpec, str].__args__ == (ParamSpec, str)
+    For example::
+
+        >>> import collections.abc
+        >>> P = ParamSpec('P')
+        >>> collections.abc.Callable[[int, int], str].__args__ == (int, int, str)
+        True
+        >>> collections.abc.Callable[P, str].__args__ == (P, str)
+        True
 
     As a result, if we need to reconstruct the Callable from its __args__,
     we need to unflatten it.
@@ -249,9 +255,14 @@ def _type_repr(obj):
 
 def _collect_parameters(args):
     """Collect all type variables and parameter specifications in args
-    in order of first appearance (lexicographic order). For example::
+    in order of first appearance (lexicographic order).
 
-        _collect_parameters((T, Callable[P, T])) == (T, P)
+    For example::
+
+        >>> P = ParamSpec('P')
+        >>> T = TypeVar('T')
+        >>> _collect_parameters((T, Callable[P, T]))
+        (~T, ~P)
     """
     parameters = []
     for t in args:
@@ -277,6 +288,7 @@ def _collect_parameters(args):
 
 def _check_generic(cls, parameters, elen):
     """Check correct count for parameters of a generic cls (internal helper).
+
     This gives a nice error message in case of count mismatch.
     """
     if not elen:
@@ -311,8 +323,9 @@ def _deduplicate(params):
 
 
 def _remove_dups_flatten(parameters):
-    """An internal helper for Union creation and substitution: flatten Unions
-    among parameters, then remove duplicates.
+    """Internal helper for Union creation and substitution.
+
+    Flatten Unions among parameters, then remove duplicates.
     """
     # Flatten out Union[Union[...], ...].
     params = []
@@ -326,7 +339,7 @@ def _remove_dups_flatten(parameters):
 
 
 def _flatten_literal_params(parameters):
-    """An internal helper for Literal creation: flatten Literals among parameters"""
+    """Internal helper for Literal creation: flatten Literals among parameters."""
     params = []
     for p in parameters:
         if isinstance(p, _LiteralGenericAlias):
@@ -341,8 +354,9 @@ def _flatten_literal_params(parameters):
 
 
 def _tp_cache(func=None, /, *, typed=False):
-    """Internal wrapper caching __getitem__ of generic types with a fallback to
-    original function for non-hashable arguments.
+    """Internal wrapper caching __getitem__ of generic types.
+
+    For non-hashable arguments, the original function is used as a fallback.
     """
     def decorator(func):
         # The callback 'inner' references the newly created lru_cache
@@ -371,6 +385,7 @@ def inner(*args, **kwds):
 
 def _eval_type(t, globalns, localns, recursive_guard=frozenset()):
     """Evaluate all forward references in the given type t.
+
     For use of globalns and localns see the docstring for get_type_hints().
     recursive_guard is used to prevent infinite recursion with a recursive
     ForwardRef.
@@ -403,7 +418,7 @@ def _eval_type(t, globalns, localns, recursive_guard=frozenset()):
 
 
 class _Final:
-    """Mixin to prohibit subclassing"""
+    """Mixin to prohibit subclassing."""
 
     __slots__ = ('__weakref__',)
 
@@ -411,22 +426,14 @@ def __init_subclass__(cls, /, *args, **kwds):
         if '_root' not in kwds:
             raise TypeError("Cannot subclass special typing classes")
 
-class _Immutable:
-    """Mixin to indicate that object should not be copied."""
-    __slots__ = ()
-
-    def __copy__(self):
-        return self
-
-    def __deepcopy__(self, memo):
-        return self
-
 
 class _NotIterable:
     """Mixin to prevent iteration, without being compatible with Iterable.
 
-    That is, we could do:
+    That is, we could do::
+
         def __iter__(self): raise TypeError()
+
     But this would make users of this mixin duck type-compatible with
     collections.abc.Iterable - isinstance(foo, Iterable) would be True.
 
@@ -483,7 +490,7 @@ def __getitem__(self, parameters):
         return self._getitem(self, parameters)
 
 
-class _LiteralSpecialForm(_SpecialForm, _root=True):
+class _TypedCacheSpecialForm(_SpecialForm, _root=True):
     def __getitem__(self, parameters):
         if not isinstance(parameters, tuple):
             parameters = (parameters,)
@@ -513,6 +520,7 @@ class Any(metaclass=_AnyMeta):
     static type checkers. At runtime, Any should not be used with instance
     checks.
     """
+
     def __new__(cls, *args, **kwargs):
         if cls is Any:
             raise TypeError("Any cannot be instantiated")
@@ -522,18 +530,18 @@ def __new__(cls, *args, **kwargs):
 @_SpecialForm
 def NoReturn(self, parameters):
     """Special type indicating functions that never return.
+
     Example::
 
-      from typing import NoReturn
+        from typing import NoReturn
 
-      def stop() -> NoReturn:
-          raise Exception('no way')
+        def stop() -> NoReturn:
+            raise Exception('no way')
 
     NoReturn can also be used as a bottom type, a type that
     has no values. Starting in Python 3.11, the Never type should
     be used for this concept instead. Type checkers should treat the two
     equivalently.
-
     """
     raise TypeError(f"{self} is not subscriptable")
 
@@ -560,8 +568,7 @@ def int_or_str(arg: int | str) -> None:
                 case str():
                     print("It's a str")
                 case _:
-                    never_call_me(arg)  # ok, arg is of type Never
-
+                    never_call_me(arg)  # OK, arg is of type Never
     """
     raise TypeError(f"{self} is not subscriptable")
 
@@ -572,12 +579,12 @@ def Self(self, parameters):
 
     Example::
 
-      from typing import Self
+        from typing import Self
 
-      class Foo:
-          def return_self(self) -> Self:
-              ...
-              return self
+        class Foo:
+            def return_self(self) -> Self:
+                ...
+                return self
 
     This is especially useful for:
         - classmethods that are used as alternative constructors
@@ -594,13 +601,13 @@ def LiteralString(self, parameters):
 
         from typing import LiteralString
 
-        def run_query(sql: LiteralString) -> ...
+        def run_query(sql: LiteralString) -> None:
             ...
 
         def caller(arbitrary_string: str, literal_string: LiteralString) -> None:
-            run_query("SELECT * FROM students")  # ok
-            run_query(literal_string)  # ok
-            run_query("SELECT * FROM " + literal_string)  # ok
+            run_query("SELECT * FROM students")  # OK
+            run_query(literal_string)  # OK
+            run_query("SELECT * FROM " + literal_string)  # OK
             run_query(arbitrary_string)  # type checker error
             run_query(  # type checker error
                 f"SELECT * FROM students WHERE name = {arbitrary_string}"
@@ -609,7 +616,6 @@ def caller(arbitrary_string: str, literal_string: LiteralString) -> None:
     Only string literals and other LiteralStrings are compatible
     with LiteralString. This provides a tool to help prevent
     security issues such as SQL injection.
-
     """
     raise TypeError(f"{self} is not subscriptable")
 
@@ -620,11 +626,13 @@ def ClassVar(self, parameters):
 
     An annotation wrapped in ClassVar indicates that a given
     attribute is intended to be used as a class variable and
-    should not be set on instances of that class. Usage::
+    should not be set on instances of that class.
 
-      class Starship:
-          stats: ClassVar[Dict[str, int]] = {} # class variable
-          damage: int = 10                     # instance variable
+    Usage::
+
+        class Starship:
+            stats: ClassVar[dict[str, int]] = {} # class variable
+            damage: int = 10                     # instance variable
 
     ClassVar accepts only types and cannot be further subscribed.
 
@@ -639,16 +647,17 @@ def Final(self, parameters):
     """Special typing construct to indicate final names to type checkers.
 
     A final name cannot be re-assigned or overridden in a subclass.
-    For example:
 
-      MAX_SIZE: Final = 9000
-      MAX_SIZE += 1  # Error reported by type checker
+    For example::
+
+        MAX_SIZE: Final = 9000
+        MAX_SIZE += 1  # Error reported by type checker
 
-      class Connection:
-          TIMEOUT: Final[int] = 10
+        class Connection:
+            TIMEOUT: Final[int] = 10
 
-      class FastConnector(Connection):
-          TIMEOUT = 1  # Error reported by type checker
+        class FastConnector(Connection):
+            TIMEOUT = 1  # Error reported by type checker
 
     There is no runtime checking of these properties.
     """
@@ -659,25 +668,29 @@ class FastConnector(Connection):
 def Union(self, parameters):
     """Union type; Union[X, Y] means either X or Y.
 
-    To define a union, use e.g. Union[int, str].  Details:
+    On Python 3.10 and higher, the | operator
+    can also be used to denote unions;
+    X | Y means the same thing to the type checker as Union[X, Y].
+
+    To define a union, use e.g. Union[int, str]. Details:
     - The arguments must be types and there must be at least one.
     - None as an argument is a special case and is replaced by
       type(None).
     - Unions of unions are flattened, e.g.::
 
-        Union[Union[int, str], float] == Union[int, str, float]
+        assert Union[Union[int, str], float] == Union[int, str, float]
 
     - Unions of a single argument vanish, e.g.::
 
-        Union[int] == int  # The constructor actually returns int
+        assert Union[int] == int  # The constructor actually returns int
 
     - Redundant arguments are skipped, e.g.::
 
-        Union[int, str, int] == Union[int, str]
+        assert Union[int, str, int] == Union[int, str]
 
     - When comparing unions, the argument order is ignored, e.g.::
 
-        Union[int, str] == Union[str, int]
+        assert Union[int, str] == Union[str, int]
 
     - You cannot subclass or instantiate a union.
     - You can use Optional[X] as a shorthand for Union[X, None].
@@ -695,33 +708,39 @@ def Union(self, parameters):
         return _UnionGenericAlias(self, parameters, name="Optional")
     return _UnionGenericAlias(self, parameters)
 
-@_SpecialForm
-def Optional(self, parameters):
-    """Optional type.
+def _make_union(left, right):
+    """Used from the C implementation of TypeVar.
 
-    Optional[X] is equivalent to Union[X, None].
+    TypeVar.__or__ calls this instead of returning types.UnionType
+    because we want to allow unions between TypeVars and strings
+    (forward references).
     """
+    return Union[left, right]
+
+@_SpecialForm
+def Optional(self, parameters):
+    """Optional[X] is equivalent to Union[X, None]."""
     arg = _type_check(parameters, f"{self} requires a single type.")
     return Union[arg, type(None)]
 
-@_LiteralSpecialForm
+@_TypedCacheSpecialForm
 @_tp_cache(typed=True)
 def Literal(self, *parameters):
     """Special typing form to define literal types (a.k.a. value types).
 
     This form can be used to indicate to type checkers that the corresponding
     variable or function parameter has a value equivalent to the provided
-    literal (or one of several literals):
+    literal (or one of several literals)::
 
-      def validate_simple(data: Any) -> Literal[True]:  # always returns True
-          ...
+        def validate_simple(data: Any) -> Literal[True]:  # always returns True
+            ...
 
-      MODE = Literal['r', 'rb', 'w', 'wb']
-      def open_helper(file: str, mode: MODE) -> str:
-          ...
+        MODE = Literal['r', 'rb', 'w', 'wb']
+        def open_helper(file: str, mode: MODE) -> str:
+            ...
 
-      open_helper('/some/path', 'r')  # Passes type check
-      open_helper('/other/path', 'typo')  # Error in type checker
+        open_helper('/some/path', 'r')  # Passes type check
+        open_helper('/other/path', 'typo')  # Error in type checker
 
     Literal[...] cannot be subclassed. At runtime, an arbitrary value
     is allowed as type argument to Literal[...], but type checkers may
@@ -741,7 +760,9 @@ def open_helper(file: str, mode: MODE) -> str:
 
 @_SpecialForm
 def TypeAlias(self, parameters):
-    """Special marker indicating that an assignment should
+    """Special form for marking type aliases.
+
+    Use TypeAlias to indicate that an assignment should
     be recognized as a proper type alias definition by type
     checkers.
 
@@ -756,13 +777,15 @@ def TypeAlias(self, parameters):
 
 @_SpecialForm
 def Concatenate(self, parameters):
-    """Used in conjunction with ``ParamSpec`` and ``Callable`` to represent a
-    higher order function which adds, removes or transforms parameters of a
-    callable.
+    """Special form for annotating higher-order functions.
+
+    ``Concatenate`` can be used in conjunction with ``ParamSpec`` and
+    ``Callable`` to represent a higher-order function which adds, removes or
+    transforms the parameters of a callable.
 
     For example::
 
-       Callable[Concatenate[int, P], int]
+        Callable[Concatenate[int, P], int]
 
     See PEP 612 for detailed information.
     """
@@ -780,7 +803,9 @@ def Concatenate(self, parameters):
 
 @_SpecialForm
 def TypeGuard(self, parameters):
-    """Special typing form used to annotate the return type of a user-defined
+    """Special typing construct for marking user-defined type guard functions.
+
+    ``TypeGuard`` can be used to annotate the return type of a user-defined
     type guard function.  ``TypeGuard`` only accepts a single type argument.
     At runtime, functions marked this way should return a boolean.
 
@@ -803,14 +828,14 @@ def TypeGuard(self, parameters):
 
        For example::
 
-          def is_str(val: Union[str, float]):
-              # "isinstance" type guard
-              if isinstance(val, str):
-                  # Type of ``val`` is narrowed to ``str``
-                  ...
-              else:
-                  # Else, type of ``val`` is narrowed to ``float``.
-                  ...
+           def is_str(val: Union[str, float]):
+               # "isinstance" type guard
+               if isinstance(val, str):
+                   # Type of ``val`` is narrowed to ``str``
+                   ...
+               else:
+                   # Else, type of ``val`` is narrowed to ``float``.
+                   ...
 
     Strict type narrowing is not enforced -- ``TypeB`` need not be a narrower
     form of ``TypeA`` (it can even be a wider form) and this may lead to
@@ -919,353 +944,176 @@ def _is_typevar_like(x: Any) -> bool:
     return isinstance(x, (TypeVar, ParamSpec)) or _is_unpacked_typevartuple(x)
 
 
-class _PickleUsingNameMixin:
-    """Mixin enabling pickling based on self.__name__."""
-
-    def __reduce__(self):
-        return self.__name__
-
-
-class _BoundVarianceMixin:
-    """Mixin giving __init__ bound and variance arguments.
-
-    This is used by TypeVar and ParamSpec, which both employ the notions of
-    a type 'bound' (restricting type arguments to be a subtype of some
-    specified type) and type 'variance' (determining subtype relations between
-    generic types).
-    """
-    def __init__(self, bound, covariant, contravariant):
-        """Used to setup TypeVars and ParamSpec's bound, covariant and
-        contravariant attributes.
-        """
-        if covariant and contravariant:
-            raise ValueError("Bivariant types are not supported.")
-        self.__covariant__ = bool(covariant)
-        self.__contravariant__ = bool(contravariant)
-        if bound:
-            self.__bound__ = _type_check(bound, "Bound must be a type.")
-        else:
-            self.__bound__ = None
-
-    def __or__(self, right):
-        return Union[self, right]
-
-    def __ror__(self, left):
-        return Union[left, self]
-
-    def __repr__(self):
-        if self.__covariant__:
-            prefix = '+'
-        elif self.__contravariant__:
-            prefix = '-'
-        else:
-            prefix = '~'
-        return prefix + self.__name__
-
-    def __mro_entries__(self, bases):
-        raise TypeError(f"Cannot subclass an instance of {type(self).__name__}")
-
-
-class TypeVar(_Final, _Immutable, _BoundVarianceMixin, _PickleUsingNameMixin,
-              _root=True):
-    """Type variable.
-
-    Usage::
-
-      T = TypeVar('T')  # Can be anything
-      A = TypeVar('A', str, bytes)  # Must be str or bytes
-
-    Type variables exist primarily for the benefit of static type
-    checkers.  They serve as the parameters for generic types as well
-    as for generic function definitions.  See class Generic for more
-    information on generic types.  Generic functions work as follows:
-
-      def repeat(x: T, n: int) -> List[T]:
-          '''Return a list containing n references to x.'''
-          return [x]*n
-
-      def longest(x: A, y: A) -> A:
-          '''Return the longest of two strings.'''
-          return x if len(x) >= len(y) else y
-
-    The latter example's signature is essentially the overloading
-    of (str, str) -> str and (bytes, bytes) -> bytes.  Also note
-    that if the arguments are instances of some subclass of str,
-    the return type is still plain str.
-
-    At runtime, isinstance(x, T) and issubclass(C, T) will raise TypeError.
-
-    Type variables defined with covariant=True or contravariant=True
-    can be used to declare covariant or contravariant generic types.
-    See PEP 484 for more details. By default generic types are invariant
-    in all type variables.
-
-    Type variables can be introspected. e.g.:
-
-      T.__name__ == 'T'
-      T.__constraints__ == ()
-      T.__covariant__ == False
-      T.__contravariant__ = False
-      A.__constraints__ == (str, bytes)
-
-    Note that only type variables defined in global scope can be pickled.
-    """
-
-    def __init__(self, name, *constraints, bound=None,
-                 covariant=False, contravariant=False):
-        self.__name__ = name
-        super().__init__(bound, covariant, contravariant)
-        if constraints and bound is not None:
-            raise TypeError("Constraints cannot be combined with bound=...")
-        if constraints and len(constraints) == 1:
-            raise TypeError("A single constraint is not allowed")
-        msg = "TypeVar(name, constraint, ...): constraints must be types."
-        self.__constraints__ = tuple(_type_check(t, msg) for t in constraints)
-        def_mod = _caller()
-        if def_mod != 'typing':
-            self.__module__ = def_mod
+def _typevar_subst(self, arg):
+    msg = "Parameters to generic types must be types."
+    arg = _type_check(arg, msg, is_argument=True)
+    if ((isinstance(arg, _GenericAlias) and arg.__origin__ is Unpack) or
+        (isinstance(arg, GenericAlias) and getattr(arg, '__unpacked__', False))):
+        raise TypeError(f"{arg} is not valid as type argument")
+    return arg
 
-    def __typing_subst__(self, arg):
-        msg = "Parameters to generic types must be types."
-        arg = _type_check(arg, msg, is_argument=True)
-        if ((isinstance(arg, _GenericAlias) and arg.__origin__ is Unpack) or
-            (isinstance(arg, GenericAlias) and getattr(arg, '__unpacked__', False))):
-            raise TypeError(f"{arg} is not valid as type argument")
-        return arg
 
+def _typevartuple_prepare_subst(self, alias, args):
+    params = alias.__parameters__
+    typevartuple_index = params.index(self)
+    for param in params[typevartuple_index + 1:]:
+        if isinstance(param, TypeVarTuple):
+            raise TypeError(f"More than one TypeVarTuple parameter in {alias}")
+
+    alen = len(args)
+    plen = len(params)
+    left = typevartuple_index
+    right = plen - typevartuple_index - 1
+    var_tuple_index = None
+    fillarg = None
+    for k, arg in enumerate(args):
+        if not isinstance(arg, type):
+            subargs = getattr(arg, '__typing_unpacked_tuple_args__', None)
+            if subargs and len(subargs) == 2 and subargs[-1] is ...:
+                if var_tuple_index is not None:
+                    raise TypeError("More than one unpacked arbitrary-length tuple argument")
+                var_tuple_index = k
+                fillarg = subargs[0]
+    if var_tuple_index is not None:
+        left = min(left, var_tuple_index)
+        right = min(right, alen - var_tuple_index - 1)
+    elif left + right > alen:
+        raise TypeError(f"Too few arguments for {alias};"
+                        f" actual {alen}, expected at least {plen-1}")
 
-class TypeVarTuple(_Final, _Immutable, _PickleUsingNameMixin, _root=True):
-    """Type variable tuple.
+    return (
+        *args[:left],
+        *([fillarg]*(typevartuple_index - left)),
+        tuple(args[left: alen - right]),
+        *([fillarg]*(plen - right - left - typevartuple_index - 1)),
+        *args[alen - right:],
+    )
 
-    Usage:
 
-      Ts = TypeVarTuple('Ts')  # Can be given any name
+def _paramspec_subst(self, arg):
+    if isinstance(arg, (list, tuple)):
+        arg = tuple(_type_check(a, "Expected a type.") for a in arg)
+    elif not _is_param_expr(arg):
+        raise TypeError(f"Expected a list of types, an ellipsis, "
+                        f"ParamSpec, or Concatenate. Got {arg}")
+    return arg
 
-    Just as a TypeVar (type variable) is a placeholder for a single type,
-    a TypeVarTuple is a placeholder for an *arbitrary* number of types. For
-    example, if we define a generic class using a TypeVarTuple:
 
-      class C(Generic[*Ts]): ...
+def _paramspec_prepare_subst(self, alias, args):
+    params = alias.__parameters__
+    i = params.index(self)
+    if i >= len(args):
+        raise TypeError(f"Too few arguments for {alias}")
+    # Special case where Z[[int, str, bool]] == Z[int, str, bool] in PEP 612.
+    if len(params) == 1 and not _is_param_expr(args[0]):
+        assert i == 0
+        args = (args,)
+    # Convert lists to tuples to help other libraries cache the results.
+    elif isinstance(args[i], list):
+        args = (*args[:i], tuple(args[i]), *args[i+1:])
+    return args
 
-    Then we can parameterize that class with an arbitrary number of type
-    arguments:
 
-      C[int]       # Fine
-      C[int, str]  # Also fine
-      C[()]        # Even this is fine
+@_tp_cache
+def _generic_class_getitem(cls, params):
+    """Parameterizes a generic class.
 
-    For more details, see PEP 646.
+    At least, parameterizing a generic class is the *main* thing this method
+    does. For example, for some generic class `Foo`, this is called when we
+    do `Foo[int]` - there, with `cls=Foo` and `params=int`.
 
-    Note that only TypeVarTuples defined in global scope can be pickled.
+    However, note that this method is also called when defining generic
+    classes in the first place with `class Foo(Generic[T]): ...`.
     """
+    if not isinstance(params, tuple):
+        params = (params,)
 
-    def __init__(self, name):
-        self.__name__ = name
-
-        # Used for pickling.
-        def_mod = _caller()
-        if def_mod != 'typing':
-            self.__module__ = def_mod
-
-    def __iter__(self):
-        yield Unpack[self]
-
-    def __repr__(self):
-        return self.__name__
+    params = tuple(_type_convert(p) for p in params)
+    is_generic_or_protocol = cls in (Generic, Protocol)
 
-    def __typing_subst__(self, arg):
-        raise TypeError("Substitution of bare TypeVarTuple is not supported")
+    if is_generic_or_protocol:
+        # Generic and Protocol can only be subscripted with unique type variables.
+        if not params:
+            raise TypeError(
+                f"Parameter list to {cls.__qualname__}[...] cannot be empty"
+            )
+        if not all(_is_typevar_like(p) for p in params):
+            raise TypeError(
+                f"Parameters to {cls.__name__}[...] must all be type variables "
+                f"or parameter specification variables.")
+        if len(set(params)) != len(params):
+            raise TypeError(
+                f"Parameters to {cls.__name__}[...] must all be unique")
+    else:
+        # Subscripting a regular Generic subclass.
+        for param in cls.__parameters__:
+            prepare = getattr(param, '__typing_prepare_subst__', None)
+            if prepare is not None:
+                params = prepare(cls, params)
+        _check_generic(cls, params, len(cls.__parameters__))
 
-    def __typing_prepare_subst__(self, alias, args):
-        params = alias.__parameters__
-        typevartuple_index = params.index(self)
-        for param in params[typevartuple_index + 1:]:
+        new_args = []
+        for param, new_arg in zip(cls.__parameters__, params):
             if isinstance(param, TypeVarTuple):
-                raise TypeError(f"More than one TypeVarTuple parameter in {alias}")
-
-        alen = len(args)
-        plen = len(params)
-        left = typevartuple_index
-        right = plen - typevartuple_index - 1
-        var_tuple_index = None
-        fillarg = None
-        for k, arg in enumerate(args):
-            if not isinstance(arg, type):
-                subargs = getattr(arg, '__typing_unpacked_tuple_args__', None)
-                if subargs and len(subargs) == 2 and subargs[-1] is ...:
-                    if var_tuple_index is not None:
-                        raise TypeError("More than one unpacked arbitrary-length tuple argument")
-                    var_tuple_index = k
-                    fillarg = subargs[0]
-        if var_tuple_index is not None:
-            left = min(left, var_tuple_index)
-            right = min(right, alen - var_tuple_index - 1)
-        elif left + right > alen:
-            raise TypeError(f"Too few arguments for {alias};"
-                            f" actual {alen}, expected at least {plen-1}")
-
-        return (
-            *args[:left],
-            *([fillarg]*(typevartuple_index - left)),
-            tuple(args[left: alen - right]),
-            *([fillarg]*(plen - right - left - typevartuple_index - 1)),
-            *args[alen - right:],
-        )
-
-    def __mro_entries__(self, bases):
-        raise TypeError(f"Cannot subclass an instance of {type(self).__name__}")
-
-
-class ParamSpecArgs(_Final, _Immutable, _root=True):
-    """The args for a ParamSpec object.
-
-    Given a ParamSpec object P, P.args is an instance of ParamSpecArgs.
-
-    ParamSpecArgs objects have a reference back to their ParamSpec:
-
-       P.args.__origin__ is P
-
-    This type is meant for runtime introspection and has no special meaning to
-    static type checkers.
-    """
-    def __init__(self, origin):
-        self.__origin__ = origin
-
-    def __repr__(self):
-        return f"{self.__origin__.__name__}.args"
-
-    def __eq__(self, other):
-        if not isinstance(other, ParamSpecArgs):
-            return NotImplemented
-        return self.__origin__ == other.__origin__
-
-    def __mro_entries__(self, bases):
-        raise TypeError(f"Cannot subclass an instance of {type(self).__name__}")
-
-
-class ParamSpecKwargs(_Final, _Immutable, _root=True):
-    """The kwargs for a ParamSpec object.
-
-    Given a ParamSpec object P, P.kwargs is an instance of ParamSpecKwargs.
-
-    ParamSpecKwargs objects have a reference back to their ParamSpec:
-
-       P.kwargs.__origin__ is P
-
-    This type is meant for runtime introspection and has no special meaning to
-    static type checkers.
-    """
-    def __init__(self, origin):
-        self.__origin__ = origin
-
-    def __repr__(self):
-        return f"{self.__origin__.__name__}.kwargs"
-
-    def __eq__(self, other):
-        if not isinstance(other, ParamSpecKwargs):
-            return NotImplemented
-        return self.__origin__ == other.__origin__
-
-    def __mro_entries__(self, bases):
-        raise TypeError(f"Cannot subclass an instance of {type(self).__name__}")
-
-
-class ParamSpec(_Final, _Immutable, _BoundVarianceMixin, _PickleUsingNameMixin,
-                _root=True):
-    """Parameter specification variable.
-
-    Usage::
-
-       P = ParamSpec('P')
-
-    Parameter specification variables exist primarily for the benefit of static
-    type checkers.  They are used to forward the parameter types of one
-    callable to another callable, a pattern commonly found in higher order
-    functions and decorators.  They are only valid when used in ``Concatenate``,
-    or as the first argument to ``Callable``, or as parameters for user-defined
-    Generics.  See class Generic for more information on generic types.  An
-    example for annotating a decorator::
-
-       T = TypeVar('T')
-       P = ParamSpec('P')
-
-       def add_logging(f: Callable[P, T]) -> Callable[P, T]:
-           '''A type-safe decorator to add logging to a function.'''
-           def inner(*args: P.args, **kwargs: P.kwargs) -> T:
-               logging.info(f'{f.__name__} was called')
-               return f(*args, **kwargs)
-           return inner
-
-       @add_logging
-       def add_two(x: float, y: float) -> float:
-           '''Add two numbers together.'''
-           return x + y
-
-    Parameter specification variables defined with covariant=True or
-    contravariant=True can be used to declare covariant or contravariant
-    generic types.  These keyword arguments are valid, but their actual semantics
-    are yet to be decided.  See PEP 612 for details.
-
-    Parameter specification variables can be introspected. e.g.:
-
-       P.__name__ == 'P'
-       P.__bound__ == None
-       P.__covariant__ == False
-       P.__contravariant__ == False
-
-    Note that only parameter specification variables defined in global scope can
-    be pickled.
-    """
-
-    @property
-    def args(self):
-        return ParamSpecArgs(self)
+                new_args.extend(new_arg)
+            else:
+                new_args.append(new_arg)
+        params = tuple(new_args)
 
-    @property
-    def kwargs(self):
-        return ParamSpecKwargs(self)
+    return _GenericAlias(cls, params)
 
-    def __init__(self, name, *, bound=None, covariant=False, contravariant=False):
-        self.__name__ = name
-        super().__init__(bound, covariant, contravariant)
-        def_mod = _caller()
-        if def_mod != 'typing':
-            self.__module__ = def_mod
 
-    def __typing_subst__(self, arg):
-        if isinstance(arg, (list, tuple)):
-            arg = tuple(_type_check(a, "Expected a type.") for a in arg)
-        elif not _is_param_expr(arg):
-            raise TypeError(f"Expected a list of types, an ellipsis, "
-                            f"ParamSpec, or Concatenate. Got {arg}")
-        return arg
+def _generic_init_subclass(cls, *args, **kwargs):
+    super(Generic, cls).__init_subclass__(*args, **kwargs)
+    tvars = []
+    if '__orig_bases__' in cls.__dict__:
+        error = Generic in cls.__orig_bases__
+    else:
+        error = (Generic in cls.__bases__ and
+                    cls.__name__ != 'Protocol' and
+                    type(cls) != _TypedDictMeta)
+    if error:
+        raise TypeError("Cannot inherit from plain Generic")
+    if '__orig_bases__' in cls.__dict__:
+        tvars = _collect_parameters(cls.__orig_bases__)
+        # Look for Generic[T1, ..., Tn].
+        # If found, tvars must be a subset of it.
+        # If not found, tvars is it.
+        # Also check for and reject plain Generic,
+        # and reject multiple Generic[...].
+        gvars = None
+        for base in cls.__orig_bases__:
+            if (isinstance(base, _GenericAlias) and
+                    base.__origin__ is Generic):
+                if gvars is not None:
+                    raise TypeError(
+                        "Cannot inherit from Generic[...] multiple times.")
+                gvars = base.__parameters__
+        if gvars is not None:
+            tvarset = set(tvars)
+            gvarset = set(gvars)
+            if not tvarset <= gvarset:
+                s_vars = ', '.join(str(t) for t in tvars if t not in gvarset)
+                s_args = ', '.join(str(g) for g in gvars)
+                raise TypeError(f"Some type variables ({s_vars}) are"
+                                f" not listed in Generic[{s_args}]")
+            tvars = gvars
+    cls.__parameters__ = tuple(tvars)
 
-    def __typing_prepare_subst__(self, alias, args):
-        params = alias.__parameters__
-        i = params.index(self)
-        if i >= len(args):
-            raise TypeError(f"Too few arguments for {alias}")
-        # Special case where Z[[int, str, bool]] == Z[int, str, bool] in PEP 612.
-        if len(params) == 1 and not _is_param_expr(args[0]):
-            assert i == 0
-            args = (args,)
-        # Convert lists to tuples to help other libraries cache the results.
-        elif isinstance(args[i], list):
-            args = (*args[:i], tuple(args[i]), *args[i+1:])
-        return args
 
 def _is_dunder(attr):
     return attr.startswith('__') and attr.endswith('__')
 
 class _BaseGenericAlias(_Final, _root=True):
-    """The central part of internal API.
+    """The central part of the internal API.
 
     This represents a generic version of type 'origin' with type arguments 'params'.
     There are two kind of these aliases: user defined and special. The special ones
     are wrappers around builtin collections and ABCs in collections.abc. These must
-    have 'name' always set. If 'inst' is False, then the alias can't be instantiated,
+    have 'name' always set. If 'inst' is False, then the alias can't be instantiated;
     this is used by e.g. typing.List and typing.Dict.
     """
+
     def __init__(self, origin, *, inst=True, name=None):
         self._inst = inst
         self._name = name
@@ -1344,8 +1192,7 @@ class _GenericAlias(_BaseGenericAlias, _root=True):
     #  * Note that native container types, e.g. `tuple`, `list`, use
     #    `types.GenericAlias` instead.
     # * Parameterized classes:
-    #     T = TypeVar('T')
-    #     class C(Generic[T]): pass
+    #     class C[T]: pass
     #     # C[int] is a _GenericAlias
     # * `Callable` aliases, generic `Callable` aliases, and
     #   parameterized `Callable` aliases:
@@ -1718,7 +1565,6 @@ def _value_and_type_iter(parameters):
 
 
 class _LiteralGenericAlias(_GenericAlias, _root=True):
-
     def __eq__(self, other):
         if not isinstance(other, _LiteralGenericAlias):
             return NotImplemented
@@ -1743,48 +1589,53 @@ def Unpack(self, parameters):
     """Type unpack operator.
 
     The type unpack operator takes the child types from some container type,
-    such as `tuple[int, str]` or a `TypeVarTuple`, and 'pulls them out'. For
-    example:
+    such as `tuple[int, str]` or a `TypeVarTuple`, and 'pulls them out'.
 
-      # For some generic class `Foo`:
-      Foo[Unpack[tuple[int, str]]]  # Equivalent to Foo[int, str]
+    For example::
+
+        # For some generic class `Foo`:
+        Foo[Unpack[tuple[int, str]]]  # Equivalent to Foo[int, str]
 
-      Ts = TypeVarTuple('Ts')
-      # Specifies that `Bar` is generic in an arbitrary number of types.
-      # (Think of `Ts` as a tuple of an arbitrary number of individual
-      #  `TypeVar`s, which the `Unpack` is 'pulling out' directly into the
-      #  `Generic[]`.)
-      class Bar(Generic[Unpack[Ts]]): ...
-      Bar[int]  # Valid
-      Bar[int, str]  # Also valid
+        Ts = TypeVarTuple('Ts')
+        # Specifies that `Bar` is generic in an arbitrary number of types.
+        # (Think of `Ts` as a tuple of an arbitrary number of individual
+        #  `TypeVar`s, which the `Unpack` is 'pulling out' directly into the
+        #  `Generic[]`.)
+        class Bar(Generic[Unpack[Ts]]): ...
+        Bar[int]  # Valid
+        Bar[int, str]  # Also valid
 
-    From Python 3.11, this can also be done using the `*` operator:
+    From Python 3.11, this can also be done using the `*` operator::
 
         Foo[*tuple[int, str]]
         class Bar(Generic[*Ts]): ...
 
+    And from Python 3.12, it can be done using built-in syntax for generics::
+
+        Foo[*tuple[int, str]]
+        class Bar[*Ts]: ...
+
     The operator can also be used along with a `TypedDict` to annotate
-    `**kwargs` in a function signature. For instance:
+    `**kwargs` in a function signature::
 
-      class Movie(TypedDict):
-        name: str
-        year: int
+        class Movie(TypedDict):
+            name: str
+            year: int
 
-      # This function expects two keyword arguments - *name* of type `str` and
-      # *year* of type `int`.
-      def foo(**kwargs: Unpack[Movie]): ...
+        # This function expects two keyword arguments - *name* of type `str` and
+        # *year* of type `int`.
+        def foo(**kwargs: Unpack[Movie]): ...
 
     Note that there is only some runtime checking of this operator. Not
     everything the runtime allows may be accepted by static type checkers.
 
-    For more information, see PEP 646.
+    For more information, see PEPs 646 and 692.
     """
     item = _type_check(parameters, f'{self} accepts only single type.')
     return _UnpackGenericAlias(origin=self, args=(item,))
 
 
 class _UnpackGenericAlias(_GenericAlias, _root=True):
-
     def __repr__(self):
         # `Unpack` only takes one argument, so __args__ should contain only
         # a single item.
@@ -1812,113 +1663,6 @@ def __typing_is_unpacked_typevartuple__(self):
         return isinstance(self.__args__[0], TypeVarTuple)
 
 
-class Generic:
-    """Abstract base class for generic types.
-
-    A generic type is typically declared by inheriting from
-    this class parameterized with one or more type variables.
-    For example, a generic mapping type might be defined as::
-
-      class Mapping(Generic[KT, VT]):
-          def __getitem__(self, key: KT) -> VT:
-              ...
-          # Etc.
-
-    This class can then be used as follows::
-
-      def lookup_name(mapping: Mapping[KT, VT], key: KT, default: VT) -> VT:
-          try:
-              return mapping[key]
-          except KeyError:
-              return default
-    """
-    __slots__ = ()
-    _is_protocol = False
-
-    @_tp_cache
-    def __class_getitem__(cls, params):
-        """Parameterizes a generic class.
-
-        At least, parameterizing a generic class is the *main* thing this method
-        does. For example, for some generic class `Foo`, this is called when we
-        do `Foo[int]` - there, with `cls=Foo` and `params=int`.
-
-        However, note that this method is also called when defining generic
-        classes in the first place with `class Foo(Generic[T]): ...`.
-        """
-        if not isinstance(params, tuple):
-            params = (params,)
-
-        params = tuple(_type_convert(p) for p in params)
-        if cls in (Generic, Protocol):
-            # Generic and Protocol can only be subscripted with unique type variables.
-            if not params:
-                raise TypeError(
-                    f"Parameter list to {cls.__qualname__}[...] cannot be empty"
-                )
-            if not all(_is_typevar_like(p) for p in params):
-                raise TypeError(
-                    f"Parameters to {cls.__name__}[...] must all be type variables "
-                    f"or parameter specification variables.")
-            if len(set(params)) != len(params):
-                raise TypeError(
-                    f"Parameters to {cls.__name__}[...] must all be unique")
-        else:
-            # Subscripting a regular Generic subclass.
-            for param in cls.__parameters__:
-                prepare = getattr(param, '__typing_prepare_subst__', None)
-                if prepare is not None:
-                    params = prepare(cls, params)
-            _check_generic(cls, params, len(cls.__parameters__))
-
-            new_args = []
-            for param, new_arg in zip(cls.__parameters__, params):
-                if isinstance(param, TypeVarTuple):
-                    new_args.extend(new_arg)
-                else:
-                    new_args.append(new_arg)
-            params = tuple(new_args)
-
-        return _GenericAlias(cls, params)
-
-    def __init_subclass__(cls, *args, **kwargs):
-        super().__init_subclass__(*args, **kwargs)
-        tvars = []
-        if '__orig_bases__' in cls.__dict__:
-            error = Generic in cls.__orig_bases__
-        else:
-            error = (Generic in cls.__bases__ and
-                        cls.__name__ != 'Protocol' and
-                        type(cls) != _TypedDictMeta)
-        if error:
-            raise TypeError("Cannot inherit from plain Generic")
-        if '__orig_bases__' in cls.__dict__:
-            tvars = _collect_parameters(cls.__orig_bases__)
-            # Look for Generic[T1, ..., Tn].
-            # If found, tvars must be a subset of it.
-            # If not found, tvars is it.
-            # Also check for and reject plain Generic,
-            # and reject multiple Generic[...].
-            gvars = None
-            for base in cls.__orig_bases__:
-                if (isinstance(base, _GenericAlias) and
-                        base.__origin__ is Generic):
-                    if gvars is not None:
-                        raise TypeError(
-                            "Cannot inherit from Generic[...] multiple times.")
-                    gvars = base.__parameters__
-            if gvars is not None:
-                tvarset = set(tvars)
-                gvarset = set(gvars)
-                if not tvarset <= gvarset:
-                    s_vars = ', '.join(str(t) for t in tvars if t not in gvarset)
-                    s_args = ', '.join(str(g) for g in gvars)
-                    raise TypeError(f"Some type variables ({s_vars}) are"
-                                    f" not listed in Generic[{s_args}]")
-                tvars = gvars
-        cls.__parameters__ = tuple(tvars)
-
-
 class _TypingEllipsis:
     """Internal placeholder for ... (ellipsis)."""
 
@@ -1926,13 +1670,14 @@ class _TypingEllipsis:
 _TYPING_INTERNALS = frozenset({
     '__parameters__', '__orig_bases__',  '__orig_class__',
     '_is_protocol', '_is_runtime_protocol', '__protocol_attrs__',
-    '__callable_proto_members_only__',
+    '__callable_proto_members_only__', '__type_params__',
 })
 
 _SPECIAL_NAMES = frozenset({
     '__abstractmethods__', '__annotations__', '__dict__', '__doc__',
     '__init__', '__module__', '__new__', '__slots__',
-    '__subclasshook__', '__weakref__', '__class_getitem__'
+    '__subclasshook__', '__weakref__', '__class_getitem__',
+    '__match_args__',
 })
 
 # These special attributes will be not collected as protocol members.
@@ -1996,7 +1741,7 @@ def _caller(depth=1, default='__main__'):
         pass
     return None
 
-def _allow_reckless_class_checks(depth=3):
+def _allow_reckless_class_checks(depth=2):
     """Allow instance and class checks for special stdlib modules.
 
     The abc and functools modules indiscriminately call isinstance() and
@@ -2008,7 +1753,7 @@ def _allow_reckless_class_checks(depth=3):
 _PROTO_ALLOWLIST = {
     'collections.abc': [
         'Callable', 'Awaitable', 'Iterable', 'Iterator', 'AsyncIterable',
-        'Hashable', 'Sized', 'Container', 'Collection', 'Reversible',
+        'Hashable', 'Sized', 'Container', 'Collection', 'Reversible', 'Buffer',
     ],
     'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'],
 }
@@ -2024,49 +1769,161 @@ def _lazy_load_getattr_static():
 
 _cleanups.append(_lazy_load_getattr_static.cache_clear)
 
+def _pickle_psargs(psargs):
+    return ParamSpecArgs, (psargs.__origin__,)
+
+copyreg.pickle(ParamSpecArgs, _pickle_psargs)
+
+def _pickle_pskwargs(pskwargs):
+    return ParamSpecKwargs, (pskwargs.__origin__,)
+
+copyreg.pickle(ParamSpecKwargs, _pickle_pskwargs)
+
+del _pickle_psargs, _pickle_pskwargs
+
+
+# Preload these once, as globals, as a micro-optimisation.
+# This makes a significant difference to the time it takes
+# to do `isinstance()`/`issubclass()` checks
+# against runtime-checkable protocols with only one callable member.
+_abc_instancecheck = ABCMeta.__instancecheck__
+_abc_subclasscheck = ABCMeta.__subclasscheck__
+
+
+def _type_check_issubclass_arg_1(arg):
+    """Raise TypeError if `arg` is not an instance of `type`
+    in `issubclass(arg, <protocol>)`.
+
+    In most cases, this is verified by type.__subclasscheck__.
+    Checking it again unnecessarily would slow down issubclass() checks,
+    so, we don't perform this check unless we absolutely have to.
+
+    For various error paths, however,
+    we want to ensure that *this* error message is shown to the user
+    where relevant, rather than a typing.py-specific error message.
+    """
+    if not isinstance(arg, type):
+        # Same error message as for issubclass(1, int).
+        raise TypeError('issubclass() arg 1 must be a class')
+
 
 class _ProtocolMeta(ABCMeta):
-    # This metaclass is really unfortunate and exists only because of
-    # the lack of __instancehook__.
+    # This metaclass is somewhat unfortunate,
+    # but is necessary for several reasons...
+    def __new__(mcls, name, bases, namespace, /, **kwargs):
+        if name == "Protocol" and bases == (Generic,):
+            pass
+        elif Protocol in bases:
+            for base in bases:
+                if not (
+                    base in {object, Generic}
+                    or base.__name__ in _PROTO_ALLOWLIST.get(base.__module__, [])
+                    or (
+                        issubclass(base, Generic)
+                        and getattr(base, "_is_protocol", False)
+                    )
+                ):
+                    raise TypeError(
+                        f"Protocols can only inherit from other protocols, "
+                        f"got {base!r}"
+                    )
+        return super().__new__(mcls, name, bases, namespace, **kwargs)
+
     def __init__(cls, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        cls.__protocol_attrs__ = _get_protocol_attrs(cls)
-        # PEP 544 prohibits using issubclass()
-        # with protocols that have non-method members.
-        cls.__callable_proto_members_only__ = all(
-            callable(getattr(cls, attr, None)) for attr in cls.__protocol_attrs__
-        )
+        if getattr(cls, "_is_protocol", False):
+            cls.__protocol_attrs__ = _get_protocol_attrs(cls)
+            # PEP 544 prohibits using issubclass()
+            # with protocols that have non-method members.
+            cls.__callable_proto_members_only__ = all(
+                callable(getattr(cls, attr, None)) for attr in cls.__protocol_attrs__
+            )
+
+    def __subclasscheck__(cls, other):
+        if cls is Protocol:
+            return type.__subclasscheck__(cls, other)
+        if (
+            getattr(cls, '_is_protocol', False)
+            and not _allow_reckless_class_checks()
+        ):
+            if (
+                not cls.__callable_proto_members_only__
+                and cls.__dict__.get("__subclasshook__") is _proto_hook
+            ):
+                _type_check_issubclass_arg_1(other)
+                non_method_attrs = sorted(
+                    attr for attr in cls.__protocol_attrs__
+                    if not callable(getattr(cls, attr, None))
+                )
+                raise TypeError(
+                    "Protocols with non-method members don't support issubclass()."
+                    f" Non-method members: {str(non_method_attrs)[1:-1]}."
+                )
+            if not getattr(cls, '_is_runtime_protocol', False):
+                _type_check_issubclass_arg_1(other)
+                raise TypeError(
+                    "Instance and class checks can only be used with "
+                    "@runtime_checkable protocols"
+                )
+        return _abc_subclasscheck(cls, other)
 
     def __instancecheck__(cls, instance):
         # We need this method for situations where attributes are
         # assigned in __init__.
-        is_protocol_cls = getattr(cls, "_is_protocol", False)
+        if cls is Protocol:
+            return type.__instancecheck__(cls, instance)
+        if not getattr(cls, "_is_protocol", False):
+            # i.e., it's a concrete subclass of a protocol
+            return _abc_instancecheck(cls, instance)
+
         if (
-            is_protocol_cls and
             not getattr(cls, '_is_runtime_protocol', False) and
-            not _allow_reckless_class_checks(depth=2)
+            not _allow_reckless_class_checks()
         ):
             raise TypeError("Instance and class checks can only be used with"
                             " @runtime_checkable protocols")
 
-        if super().__instancecheck__(instance):
+        if _abc_instancecheck(cls, instance):
             return True
 
-        if is_protocol_cls:
-            getattr_static = _lazy_load_getattr_static()
-            for attr in cls.__protocol_attrs__:
-                try:
-                    val = getattr_static(instance, attr)
-                except AttributeError:
-                    break
-                if val is None and callable(getattr(cls, attr, None)):
-                    break
-            else:
-                return True
+        getattr_static = _lazy_load_getattr_static()
+        for attr in cls.__protocol_attrs__:
+            try:
+                val = getattr_static(instance, attr)
+            except AttributeError:
+                break
+            if val is None and callable(getattr(cls, attr, None)):
+                break
+        else:
+            return True
 
         return False
 
 
+@classmethod
+def _proto_hook(cls, other):
+    if not cls.__dict__.get('_is_protocol', False):
+        return NotImplemented
+
+    for attr in cls.__protocol_attrs__:
+        for base in other.__mro__:
+            # Check if the members appears in the class dictionary...
+            if attr in base.__dict__:
+                if base.__dict__[attr] is None:
+                    return NotImplemented
+                break
+
+            # ...or in annotations, if it is a sub-protocol.
+            annotations = getattr(base, '__annotations__', {})
+            if (isinstance(annotations, collections.abc.Mapping) and
+                    attr in annotations and
+                    issubclass(other, Generic) and getattr(other, '_is_protocol', False)):
+                break
+        else:
+            return NotImplemented
+    return True
+
+
 class Protocol(Generic, metaclass=_ProtocolMeta):
     """Base class for protocol classes.
 
@@ -2077,7 +1934,9 @@ def meth(self) -> int:
                 ...
 
     Such classes are primarily used with static type checkers that recognize
-    structural subtyping (static duck-typing), for example::
+    structural subtyping (static duck-typing).
+
+    For example::
 
         class C:
             def meth(self) -> int:
@@ -2093,10 +1952,11 @@ def func(x: Proto) -> int:
     only the presence of given attributes, ignoring their type signatures.
     Protocol classes can be generic, they are defined as::
 
-        class GenProto(Protocol[T]):
+        class GenProto[T](Protocol):
             def meth(self) -> T:
                 ...
     """
+
     __slots__ = ()
     _is_protocol = True
     _is_runtime_protocol = False
@@ -2109,61 +1969,11 @@ def __init_subclass__(cls, *args, **kwargs):
             cls._is_protocol = any(b is Protocol for b in cls.__bases__)
 
         # Set (or override) the protocol subclass hook.
-        def _proto_hook(other):
-            if not cls.__dict__.get('_is_protocol', False):
-                return NotImplemented
-
-            # First, perform various sanity checks.
-            if not getattr(cls, '_is_runtime_protocol', False):
-                if _allow_reckless_class_checks():
-                    return NotImplemented
-                raise TypeError("Instance and class checks can only be used with"
-                                " @runtime_checkable protocols")
-
-            if not cls.__callable_proto_members_only__ :
-                if _allow_reckless_class_checks():
-                    return NotImplemented
-                raise TypeError("Protocols with non-method members"
-                                " don't support issubclass()")
-            if not isinstance(other, type):
-                # Same error message as for issubclass(1, int).
-                raise TypeError('issubclass() arg 1 must be a class')
-
-            # Second, perform the actual structural compatibility check.
-            for attr in cls.__protocol_attrs__:
-                for base in other.__mro__:
-                    # Check if the members appears in the class dictionary...
-                    if attr in base.__dict__:
-                        if base.__dict__[attr] is None:
-                            return NotImplemented
-                        break
-
-                    # ...or in annotations, if it is a sub-protocol.
-                    annotations = getattr(base, '__annotations__', {})
-                    if (isinstance(annotations, collections.abc.Mapping) and
-                            attr in annotations and
-                            issubclass(other, Generic) and other._is_protocol):
-                        break
-                else:
-                    return NotImplemented
-            return True
-
         if '__subclasshook__' not in cls.__dict__:
             cls.__subclasshook__ = _proto_hook
 
-        # We have nothing more to do for non-protocols...
-        if not cls._is_protocol:
-            return
-
-        # ... otherwise check consistency of bases, and prohibit instantiation.
-        for base in cls.__bases__:
-            if not (base in (object, Generic) or
-                    base.__module__ in _PROTO_ALLOWLIST and
-                    base.__name__ in _PROTO_ALLOWLIST[base.__module__] or
-                    issubclass(base, Generic) and base._is_protocol):
-                raise TypeError('Protocols can only inherit from other'
-                                ' protocols, got %r' % base)
-        if cls.__init__ is Protocol.__init__:
+        # Prohibit instantiation for protocol classes
+        if cls._is_protocol and cls.__init__ is Protocol.__init__:
             cls.__init__ = _no_init_or_replace_init
 
 
@@ -2171,12 +1981,13 @@ class _AnnotatedAlias(_NotIterable, _GenericAlias, _root=True):
     """Runtime representation of an annotated type.
 
     At its core 'Annotated[t, dec1, dec2, ...]' is an alias for the type 't'
-    with extra annotations. The alias behaves like a normal typing alias,
-    instantiating is the same as instantiating the underlying type, binding
+    with extra annotations. The alias behaves like a normal typing alias.
+    Instantiating is the same as instantiating the underlying type; binding
     it to types is also the same.
 
     The metadata itself is stored in a '__metadata__' attribute as a tuple.
     """
+
     def __init__(self, origin, metadata):
         if isinstance(origin, _AnnotatedAlias):
             metadata = origin.__metadata__ + metadata
@@ -2218,8 +2029,10 @@ def __mro_entries__(self, bases):
         return (self.__origin__,)
 
 
-class Annotated:
-    """Add context specific metadata to a type.
+@_TypedCacheSpecialForm
+@_tp_cache(typed=True)
+def Annotated(self, *params):
+    """Add context-specific metadata to a type.
 
     Example: Annotated[int, runtime_check.Unsigned] indicates to the
     hypothetical runtime_check module that this type is an unsigned int.
@@ -2233,60 +2046,49 @@ class Annotated:
     - It's an error to call `Annotated` with less than two arguments.
     - Access the metadata via the ``__metadata__`` attribute::
 
-        Annotated[int, '$'].__metadata__ == ('$',)
+        assert Annotated[int, '$'].__metadata__ == ('$',)
 
-    - Nested Annotated are flattened::
+    - Nested Annotated types are flattened::
 
-        Annotated[Annotated[T, Ann1, Ann2], Ann3] == Annotated[T, Ann1, Ann2, Ann3]
+        assert Annotated[Annotated[T, Ann1, Ann2], Ann3] == Annotated[T, Ann1, Ann2, Ann3]
 
     - Instantiating an annotated type is equivalent to instantiating the
     underlying type::
 
-        Annotated[C, Ann1](5) == C(5)
+        assert Annotated[C, Ann1](5) == C(5)
 
     - Annotated can be used as a generic type alias::
 
-        Optimized = Annotated[T, runtime.Optimize()]
-        Optimized[int] == Annotated[int, runtime.Optimize()]
+        type Optimized[T] = Annotated[T, runtime.Optimize()]
+        # type checker will treat Optimized[int]
+        # as equivalent to Annotated[int, runtime.Optimize()]
 
-        OptimizedList = Annotated[List[T], runtime.Optimize()]
-        OptimizedList[int] == Annotated[List[int], runtime.Optimize()]
+        type OptimizedList[T] = Annotated[list[T], runtime.Optimize()]
+        # type checker will treat OptimizedList[int]
+        # as equivalent to Annotated[list[int], runtime.Optimize()]
 
     - Annotated cannot be used with an unpacked TypeVarTuple::
 
-        Annotated[*Ts, Ann1]  # NOT valid
+        type Variadic[*Ts] = Annotated[*Ts, Ann1]  # NOT valid
 
-      This would be equivalent to
+      This would be equivalent to::
 
         Annotated[T1, T2, T3, ..., Ann1]
 
       where T1, T2 etc. are TypeVars, which would be invalid, because
       only one type should be passed to Annotated.
     """
-
-    __slots__ = ()
-
-    def __new__(cls, *args, **kwargs):
-        raise TypeError("Type Annotated cannot be instantiated.")
-
-    @_tp_cache
-    def __class_getitem__(cls, params):
-        if not isinstance(params, tuple) or len(params) < 2:
-            raise TypeError("Annotated[...] should be used "
-                            "with at least two arguments (a type and an "
-                            "annotation).")
-        if _is_unpacked_typevartuple(params[0]):
-            raise TypeError("Annotated[...] should not be used with an "
-                            "unpacked TypeVarTuple")
-        msg = "Annotated[t, ...]: t must be a type."
-        origin = _type_check(params[0], msg, allow_special_forms=True)
-        metadata = tuple(params[1:])
-        return _AnnotatedAlias(origin, metadata)
-
-    def __init_subclass__(cls, *args, **kwargs):
-        raise TypeError(
-            "Cannot subclass {}.Annotated".format(cls.__module__)
-        )
+    if len(params) < 2:
+        raise TypeError("Annotated[...] should be used "
+                        "with at least two arguments (a type and an "
+                        "annotation).")
+    if _is_unpacked_typevartuple(params[0]):
+        raise TypeError("Annotated[...] should not be used with an "
+                        "unpacked TypeVarTuple")
+    msg = "Annotated[t, ...]: t must be a type."
+    origin = _type_check(params[0], msg, allow_special_forms=True)
+    metadata = tuple(params[1:])
+    return _AnnotatedAlias(origin, metadata)
 
 
 def runtime_checkable(cls):
@@ -2296,6 +2098,7 @@ def runtime_checkable(cls):
     Raise TypeError if applied to a non-protocol class.
     This allows a simple-minded structural check very similar to
     one trick ponies in collections.abc such as Iterable.
+
     For example::
 
         @runtime_checkable
@@ -2307,7 +2110,7 @@ def close(self): ...
     Warning: this will check only the presence of the required methods,
     not their type signatures!
     """
-    if not issubclass(cls, Generic) or not cls._is_protocol:
+    if not issubclass(cls, Generic) or not getattr(cls, '_is_protocol', False):
         raise TypeError('@runtime_checkable can be only applied to protocol classes,'
                         ' got %r' % cls)
     cls._is_runtime_protocol = True
@@ -2335,9 +2138,8 @@ def assert_type(val, typ, /):
     emits an error if the value is not of the specified type::
 
         def greet(name: str) -> None:
-            assert_type(name, str)  # ok
+            assert_type(name, str)  # OK
             assert_type(name, int)  # type checker error
-
     """
     return val
 
@@ -2378,7 +2180,6 @@ def get_type_hints(obj, globalns=None, localns=None, include_extras=False):
     - If two dict arguments are passed, they specify globals and
       locals, respectively.
     """
-
     if getattr(obj, '__no_type_check__', None):
         return {}
     # Classes require a special treatment.
@@ -2448,8 +2249,7 @@ def get_type_hints(obj, globalns=None, localns=None, include_extras=False):
 
 
 def _strip_annotations(t):
-    """Strips the annotations from a given type.
-    """
+    """Strip the annotations from a given type."""
     if isinstance(t, _AnnotatedAlias):
         return _strip_annotations(t.__origin__)
     if hasattr(t, "__origin__") and t.__origin__ in (Required, NotRequired):
@@ -2476,17 +2276,20 @@ def _strip_annotations(t):
 def get_origin(tp):
     """Get the unsubscripted version of a type.
 
-    This supports generic types, Callable, Tuple, Union, Literal, Final, ClassVar
-    and Annotated. Return None for unsupported types. Examples::
-
-        get_origin(Literal[42]) is Literal
-        get_origin(int) is None
-        get_origin(ClassVar[int]) is ClassVar
-        get_origin(Generic) is Generic
-        get_origin(Generic[T]) is Generic
-        get_origin(Union[T, int]) is Union
-        get_origin(List[Tuple[T, T]][int]) == list
-        get_origin(P.args) is P
+    This supports generic types, Callable, Tuple, Union, Literal, Final, ClassVar,
+    Annotated, and others. Return None for unsupported types.
+
+    Examples::
+
+        >>> P = ParamSpec('P')
+        >>> assert get_origin(Literal[42]) is Literal
+        >>> assert get_origin(int) is None
+        >>> assert get_origin(ClassVar[int]) is ClassVar
+        >>> assert get_origin(Generic) is Generic
+        >>> assert get_origin(Generic[T]) is Generic
+        >>> assert get_origin(Union[T, int]) is Union
+        >>> assert get_origin(List[Tuple[T, T]][int]) is list
+        >>> assert get_origin(P.args) is P
     """
     if isinstance(tp, _AnnotatedAlias):
         return Annotated
@@ -2504,12 +2307,15 @@ def get_args(tp):
     """Get type arguments with all substitutions performed.
 
     For unions, basic simplifications used by Union constructor are performed.
+
     Examples::
-        get_args(Dict[str, int]) == (str, int)
-        get_args(int) == ()
-        get_args(Union[int, Union[T, int], str][int]) == (int, str)
-        get_args(Union[int, Tuple[T, int]][str]) == (int, Tuple[str, int])
-        get_args(Callable[[], T][int]) == ([], int)
+
+        >>> T = TypeVar('T')
+        >>> assert get_args(Dict[str, int]) == (str, int)
+        >>> assert get_args(int) == ()
+        >>> assert get_args(Union[int, Union[T, int], str][int]) == (int, str)
+        >>> assert get_args(Union[int, Tuple[T, int]][str]) == (int, Tuple[str, int])
+        >>> assert get_args(Callable[[], T][int]) == ([], int)
     """
     if isinstance(tp, _AnnotatedAlias):
         return (tp.__origin__,) + tp.__metadata__
@@ -2524,15 +2330,19 @@ def get_args(tp):
 
 
 def is_typeddict(tp):
-    """Check if an annotation is a TypedDict class
+    """Check if an annotation is a TypedDict class.
 
     For example::
-        class Film(TypedDict):
-            title: str
-            year: int
 
-        is_typeddict(Film)  # => True
-        is_typeddict(Union[list, str])  # => False
+        >>> from typing import TypedDict
+        >>> class Film(TypedDict):
+        ...     title: str
+        ...     year: int
+        ...
+        >>> is_typeddict(Film)
+        True
+        >>> is_typeddict(dict)
+        False
     """
     return isinstance(tp, _TypedDictMeta)
 
@@ -2558,7 +2368,6 @@ def int_or_str(arg: int | str) -> None:
     reachable, it will emit an error.
 
     At runtime, this throws an exception when called.
-
     """
     value = repr(arg)
     if len(value) > _ASSERT_NEVER_REPR_MAX_LENGTH:
@@ -2608,7 +2417,8 @@ def no_type_check_decorator(decorator):
     This wraps the decorator with something that wraps the decorated
     function in @no_type_check.
     """
-
+    import warnings
+    warnings._deprecated("typing.no_type_check_decorator", remove=(3, 15))
     @functools.wraps(decorator)
     def wrapped_decorator(*args, **kwds):
         func = decorator(*args, **kwds)
@@ -2635,27 +2445,29 @@ def overload(func):
     """Decorator for overloaded functions/methods.
 
     In a stub file, place two or more stub definitions for the same
-    function in a row, each decorated with @overload.  For example:
+    function in a row, each decorated with @overload.
+
+    For example::
 
-      @overload
-      def utf8(value: None) -> None: ...
-      @overload
-      def utf8(value: bytes) -> bytes: ...
-      @overload
-      def utf8(value: str) -> bytes: ...
+        @overload
+        def utf8(value: None) -> None: ...
+        @overload
+        def utf8(value: bytes) -> bytes: ...
+        @overload
+        def utf8(value: str) -> bytes: ...
 
     In a non-stub file (i.e. a regular .py file), do the same but
     follow it with an implementation.  The implementation should *not*
-    be decorated with @overload.  For example:
+    be decorated with @overload::
 
-      @overload
-      def utf8(value: None) -> None: ...
-      @overload
-      def utf8(value: bytes) -> bytes: ...
-      @overload
-      def utf8(value: str) -> bytes: ...
-      def utf8(value):
-          # implementation goes here
+        @overload
+        def utf8(value: None) -> None: ...
+        @overload
+        def utf8(value: bytes) -> bytes: ...
+        @overload
+        def utf8(value: str) -> bytes: ...
+        def utf8(value):
+            ...  # implementation goes here
 
     The overloads for a function can be retrieved at runtime using the
     get_overloads() function.
@@ -2688,29 +2500,30 @@ def clear_overloads():
 
 
 def final(f):
-    """A decorator to indicate final methods and final classes.
+    """Decorator to indicate final methods and final classes.
 
     Use this decorator to indicate to type checkers that the decorated
     method cannot be overridden, and decorated class cannot be subclassed.
-    For example:
-
-      class Base:
-          @final
-          def done(self) -> None:
-              ...
-      class Sub(Base):
-          def done(self) -> None:  # Error reported by type checker
+
+    For example::
+
+        class Base:
+            @final
+            def done(self) -> None:
+                ...
+        class Sub(Base):
+            def done(self) -> None:  # Error reported by type checker
                 ...
 
-      @final
-      class Leaf:
-          ...
-      class Other(Leaf):  # Error reported by type checker
-          ...
+        @final
+        class Leaf:
+            ...
+        class Other(Leaf):  # Error reported by type checker
+            ...
 
     There is no runtime checking of these properties. The decorator
-    sets the ``__final__`` attribute to ``True`` on the decorated object
-    to allow runtime introspection.
+    attempts to set the ``__final__`` attribute to ``True`` on the decorated
+    object to allow runtime introspection.
     """
     try:
         f.__final__ = True
@@ -2722,8 +2535,9 @@ class Other(Leaf):  # Error reported by type checker
     return f
 
 
-# Some unconstrained type variables.  These are used by the container types.
-# (These are not for export.)
+# Some unconstrained type variables.  These were initially used by the container types.
+# They were never meant for export and are now unused, but we keep them around to
+# avoid breaking compatibility with users who import them.
 T = TypeVar('T')  # Any type.
 KT = TypeVar('KT')  # Key type.
 VT = TypeVar('VT')  # Value type.
@@ -2756,13 +2570,17 @@ class Other(Leaf):  # Error reported by type checker
 Collection = _alias(collections.abc.Collection, 1)
 Callable = _CallableType(collections.abc.Callable, 2)
 Callable.__doc__ = \
-    """Callable type; Callable[[int], str] is a function of (int) -> str.
+    """Deprecated alias to collections.abc.Callable.
+
+    Callable[[int], str] signifies a function that takes a single
+    parameter of type int and returns a str.
 
     The subscription syntax must always be used with exactly two
-    values: the argument list and the return type.  The argument list
-    must be a list of types or ellipsis; the return type must be a single type.
+    values: the argument list and the return type.
+    The argument list must be a list of types, a ParamSpec,
+    Concatenate or ellipsis. The return type must be a single type.
 
-    There is no syntax to indicate optional or keyword arguments,
+    There is no syntax to indicate optional or keyword arguments;
     such function types are rarely used as callback types.
     """
 AbstractSet = _alias(collections.abc.Set, 1, name='AbstractSet')
@@ -2778,7 +2596,9 @@ class Other(Leaf):  # Error reported by type checker
 # Tuple accepts variable number of parameters.
 Tuple = _TupleType(tuple, -1, inst=False, name='Tuple')
 Tuple.__doc__ = \
-    """Tuple type; Tuple[X, Y] is the cross-product type of X and Y.
+    """Deprecated alias to builtins.tuple.
+
+    Tuple[X, Y] is the cross-product type of X and Y.
 
     Example: Tuple[T1, T2] is a tuple of two elements corresponding
     to type variables T1 and T2.  Tuple[int, float, str] is a tuple
@@ -2794,8 +2614,6 @@ class Other(Leaf):  # Error reported by type checker
 KeysView = _alias(collections.abc.KeysView, 1)
 ItemsView = _alias(collections.abc.ItemsView, 2)
 ValuesView = _alias(collections.abc.ValuesView, 1)
-ContextManager = _alias(contextlib.AbstractContextManager, 1, name='ContextManager')
-AsyncContextManager = _alias(contextlib.AbstractAsyncContextManager, 1, name='AsyncContextManager')
 Dict = _alias(dict, 2, inst=False, name='Dict')
 DefaultDict = _alias(collections.defaultdict, 2, name='DefaultDict')
 OrderedDict = _alias(collections.OrderedDict, 2)
@@ -2805,35 +2623,34 @@ class Other(Leaf):  # Error reported by type checker
 AsyncGenerator = _alias(collections.abc.AsyncGenerator, 2)
 Type = _alias(type, 1, inst=False, name='Type')
 Type.__doc__ = \
-    """A special construct usable to annotate class objects.
+    """Deprecated alias to builtins.type.
 
+    builtins.type or typing.Type can be used to annotate class objects.
     For example, suppose we have the following classes::
 
-      class User: ...  # Abstract base for User classes
-      class BasicUser(User): ...
-      class ProUser(User): ...
-      class TeamUser(User): ...
+        class User: ...  # Abstract base for User classes
+        class BasicUser(User): ...
+        class ProUser(User): ...
+        class TeamUser(User): ...
 
     And a function that takes a class argument that's a subclass of
     User and returns an instance of the corresponding class::
 
-      U = TypeVar('U', bound=User)
-      def new_user(user_class: Type[U]) -> U:
-          user = user_class()
-          # (Here we could write the user object to a database)
-          return user
+        def new_user[U](user_class: Type[U]) -> U:
+            user = user_class()
+            # (Here we could write the user object to a database)
+            return user
 
-      joe = new_user(BasicUser)
+        joe = new_user(BasicUser)
 
     At this point the type checker knows that joe has type BasicUser.
     """
 
-# Internal type variable for callables. Not for export.
-F = TypeVar("F", bound=Callable[..., Any])
 
 @runtime_checkable
 class SupportsInt(Protocol):
     """An ABC with one abstract method __int__."""
+
     __slots__ = ()
 
     @abstractmethod
@@ -2844,6 +2661,7 @@ def __int__(self) -> int:
 @runtime_checkable
 class SupportsFloat(Protocol):
     """An ABC with one abstract method __float__."""
+
     __slots__ = ()
 
     @abstractmethod
@@ -2854,6 +2672,7 @@ def __float__(self) -> float:
 @runtime_checkable
 class SupportsComplex(Protocol):
     """An ABC with one abstract method __complex__."""
+
     __slots__ = ()
 
     @abstractmethod
@@ -2864,6 +2683,7 @@ def __complex__(self) -> complex:
 @runtime_checkable
 class SupportsBytes(Protocol):
     """An ABC with one abstract method __bytes__."""
+
     __slots__ = ()
 
     @abstractmethod
@@ -2874,6 +2694,7 @@ def __bytes__(self) -> bytes:
 @runtime_checkable
 class SupportsIndex(Protocol):
     """An ABC with one abstract method __index__."""
+
     __slots__ = ()
 
     @abstractmethod
@@ -2882,22 +2703,24 @@ def __index__(self) -> int:
 
 
 @runtime_checkable
-class SupportsAbs(Protocol[T_co]):
+class SupportsAbs[T](Protocol):
     """An ABC with one abstract method __abs__ that is covariant in its return type."""
+
     __slots__ = ()
 
     @abstractmethod
-    def __abs__(self) -> T_co:
+    def __abs__(self) -> T:
         pass
 
 
 @runtime_checkable
-class SupportsRound(Protocol[T_co]):
+class SupportsRound[T](Protocol):
     """An ABC with one abstract method __round__ that is covariant in its return type."""
+
     __slots__ = ()
 
     @abstractmethod
-    def __round__(self, ndigits: int = 0) -> T_co:
+    def __round__(self, ndigits: int = 0) -> T:
         pass
 
 
@@ -2920,7 +2743,6 @@ def _make_nmtuple(name, types, module, defaults = ()):
 
 
 class NamedTupleMeta(type):
-
     def __new__(cls, typename, bases, ns):
         assert _NamedTuple in bases
         for base in bases:
@@ -2943,23 +2765,47 @@ def __new__(cls, typename, bases, ns):
                                module=ns['__module__'])
         nm_tpl.__bases__ = bases
         if Generic in bases:
-            class_getitem = Generic.__class_getitem__.__func__
+            class_getitem = _generic_class_getitem
             nm_tpl.__class_getitem__ = classmethod(class_getitem)
         # update from user namespace without overriding special namedtuple attributes
-        for key in ns:
+        for key, val in ns.items():
             if key in _prohibited:
                 raise AttributeError("Cannot overwrite NamedTuple attribute " + key)
-            elif key not in _special and key not in nm_tpl._fields:
-                setattr(nm_tpl, key, ns[key])
+            elif key not in _special:
+                if key not in nm_tpl._fields:
+                    setattr(nm_tpl, key, val)
+                try:
+                    set_name = type(val).__set_name__
+                except AttributeError:
+                    pass
+                else:
+                    try:
+                        set_name(val, nm_tpl, key)
+                    except BaseException as e:
+                        e.add_note(
+                            f"Error calling __set_name__ on {type(val).__name__!r} "
+                            f"instance {key!r} in {typename!r}"
+                        )
+                        raise
+
         if Generic in bases:
             nm_tpl.__init_subclass__()
         return nm_tpl
 
 
-def NamedTuple(typename, fields=None, /, **kwargs):
+class _Sentinel:
+    __slots__ = ()
+    def __repr__(self):
+        return '<sentinel>'
+
+
+_sentinel = _Sentinel()
+
+
+def NamedTuple(typename, fields=_sentinel, /, **kwargs):
     """Typed version of namedtuple.
 
-    Usage in Python versions >= 3.6::
+    Usage::
 
         class Employee(NamedTuple):
             name: str
@@ -2972,19 +2818,48 @@ class Employee(NamedTuple):
     The resulting class has an extra __annotations__ attribute, giving a
     dict that maps field names to types.  (The field names are also in
     the _fields attribute, which is part of the namedtuple API.)
-    Alternative equivalent keyword syntax is also accepted::
-
-        Employee = NamedTuple('Employee', name=str, id=int)
-
-    In Python versions <= 3.5 use::
+    An alternative equivalent functional syntax is also accepted::
 
         Employee = NamedTuple('Employee', [('name', str), ('id', int)])
     """
-    if fields is None:
-        fields = kwargs.items()
+    if fields is _sentinel:
+        if kwargs:
+            deprecated_thing = "Creating NamedTuple classes using keyword arguments"
+            deprecation_msg = (
+                "{name} is deprecated and will be disallowed in Python {remove}. "
+                "Use the class-based or functional syntax instead."
+            )
+        else:
+            deprecated_thing = "Failing to pass a value for the 'fields' parameter"
+            example = f"`{typename} = NamedTuple({typename!r}, [])`"
+            deprecation_msg = (
+                "{name} is deprecated and will be disallowed in Python {remove}. "
+                "To create a NamedTuple class with 0 fields "
+                "using the functional syntax, "
+                "pass an empty list, e.g. "
+            ) + example + "."
+    elif fields is None:
+        if kwargs:
+            raise TypeError(
+                "Cannot pass `None` as the 'fields' parameter "
+                "and also specify fields using keyword arguments"
+            )
+        else:
+            deprecated_thing = "Passing `None` as the 'fields' parameter"
+            example = f"`{typename} = NamedTuple({typename!r}, [])`"
+            deprecation_msg = (
+                "{name} is deprecated and will be disallowed in Python {remove}. "
+                "To create a NamedTuple class with 0 fields "
+                "using the functional syntax, "
+                "pass an empty list, e.g. "
+            ) + example + "."
     elif kwargs:
         raise TypeError("Either list of fields or keywords"
                         " can be provided to NamedTuple, not both")
+    if fields is _sentinel or fields is None:
+        import warnings
+        warnings._deprecated(deprecated_thing, message=deprecation_msg, remove=(3, 15))
+        fields = kwargs.items()
     nt = _make_nmtuple(typename, fields, module=_caller())
     nt.__orig_bases__ = (NamedTuple,)
     return nt
@@ -3000,7 +2875,7 @@ def _namedtuple_mro_entries(bases):
 
 class _TypedDictMeta(type):
     def __new__(cls, name, bases, ns, total=True):
-        """Create new typed dict class object.
+        """Create a new typed dict class object.
 
         This method is called when TypedDict is subclassed,
         or when TypedDict is instantiated. This way
@@ -3034,8 +2909,14 @@ def __new__(cls, name, bases, ns, total=True):
 
         for base in bases:
             annotations.update(base.__dict__.get('__annotations__', {}))
-            required_keys.update(base.__dict__.get('__required_keys__', ()))
-            optional_keys.update(base.__dict__.get('__optional_keys__', ()))
+
+            base_required = base.__dict__.get('__required_keys__', set())
+            required_keys |= base_required
+            optional_keys -= base_required
+
+            base_optional = base.__dict__.get('__optional_keys__', set())
+            required_keys -= base_optional
+            optional_keys |= base_optional
 
         annotations.update(own_annotations)
         for annotation_key, annotation_type in own_annotations.items():
@@ -3047,19 +2928,27 @@ def __new__(cls, name, bases, ns, total=True):
                     annotation_origin = get_origin(annotation_type)
 
             if annotation_origin is Required:
-                required_keys.add(annotation_key)
+                is_required = True
             elif annotation_origin is NotRequired:
-                optional_keys.add(annotation_key)
-            elif total:
+                is_required = False
+            else:
+                is_required = total
+
+            if is_required:
                 required_keys.add(annotation_key)
+                optional_keys.discard(annotation_key)
             else:
                 optional_keys.add(annotation_key)
+                required_keys.discard(annotation_key)
 
+        assert required_keys.isdisjoint(optional_keys), (
+            f"Required keys overlap with optional keys in {name}:"
+            f" {required_keys=}, {optional_keys=}"
+        )
         tp_dict.__annotations__ = annotations
         tp_dict.__required_keys__ = frozenset(required_keys)
         tp_dict.__optional_keys__ = frozenset(optional_keys)
-        if not hasattr(tp_dict, '__total__'):
-            tp_dict.__total__ = total
+        tp_dict.__total__ = total
         return tp_dict
 
     __call__ = dict  # static method
@@ -3071,24 +2960,25 @@ def __subclasscheck__(cls, other):
     __instancecheck__ = __subclasscheck__
 
 
-def TypedDict(typename, fields=None, /, *, total=True, **kwargs):
+def TypedDict(typename, fields=_sentinel, /, *, total=True):
     """A simple typed namespace. At runtime it is equivalent to a plain dict.
 
-    TypedDict creates a dictionary type that expects all of its
+    TypedDict creates a dictionary type such that a type checker will expect all
     instances to have a certain set of keys, where each key is
     associated with a value of a consistent type. This expectation
-    is not checked at runtime but is only enforced by type checkers.
-    Usage::
-
-        class Point2D(TypedDict):
-            x: int
-            y: int
-            label: str
+    is not checked at runtime.
 
-        a: Point2D = {'x': 1, 'y': 2, 'label': 'good'}  # OK
-        b: Point2D = {'z': 3, 'label': 'bad'}           # Fails type check
+    Usage::
 
-        assert Point2D(x=1, y=2, label='first') == dict(x=1, y=2, label='first')
+        >>> class Point2D(TypedDict):
+        ...     x: int
+        ...     y: int
+        ...     label: str
+        ...
+        >>> a: Point2D = {'x': 1, 'y': 2, 'label': 'good'}  # OK
+        >>> b: Point2D = {'z': 3, 'label': 'bad'}           # Fails type check
+        >>> Point2D(x=1, y=2, label='first') == dict(x=1, y=2, label='first')
+        True
 
     The type info can be accessed via the Point2D.__annotations__ dict, and
     the Point2D.__required_keys__ and Point2D.__optional_keys__ frozensets.
@@ -3097,34 +2987,43 @@ class Point2D(TypedDict):
         Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': str})
 
     By default, all keys must be present in a TypedDict. It is possible
-    to override this by specifying totality.
-    Usage::
+    to override this by specifying totality::
 
-        class point2D(TypedDict, total=False):
+        class Point2D(TypedDict, total=False):
             x: int
             y: int
 
-    This means that a point2D TypedDict can have any of the keys omitted.A type
+    This means that a Point2D TypedDict can have any of the keys omitted. A type
     checker is only expected to support a literal False or True as the value of
     the total argument. True is the default, and makes all items defined in the
     class body be required.
 
-    The class syntax is only supported in Python 3.6+, while the other
-    syntax form works for Python 2.7 and 3.2+
+    The Required and NotRequired special forms can also be used to mark
+    individual keys as being required or not required::
+
+        class Point2D(TypedDict):
+            x: int               # the "x" key must always be present (Required is the default)
+            y: NotRequired[int]  # the "y" key can be omitted
+
+    See PEP 655 for more details on Required and NotRequired.
     """
-    if fields is None:
-        fields = kwargs
-    elif kwargs:
-        raise TypeError("TypedDict takes either a dict or keyword arguments,"
-                        " but not both")
-    if kwargs:
-        warnings.warn(
-            "The kwargs-based syntax for TypedDict definitions is deprecated "
-            "in Python 3.11, will be removed in Python 3.13, and may not be "
-            "understood by third-party type checkers.",
-            DeprecationWarning,
-            stacklevel=2,
-        )
+    if fields is _sentinel or fields is None:
+        import warnings
+
+        if fields is _sentinel:
+            deprecated_thing = "Failing to pass a value for the 'fields' parameter"
+        else:
+            deprecated_thing = "Passing `None` as the 'fields' parameter"
+
+        example = f"`{typename} = TypedDict({typename!r}, {{{{}}}})`"
+        deprecation_msg = (
+            "{name} is deprecated and will be disallowed in Python {remove}. "
+            "To create a TypedDict class with 0 fields "
+            "using the functional syntax, "
+            "pass an empty dictionary, e.g. "
+        ) + example + "."
+        warnings._deprecated(deprecated_thing, message=deprecation_msg, remove=(3, 15))
+        fields = {}
 
     ns = {'__annotations__': dict(fields)}
     module = _caller()
@@ -3142,8 +3041,11 @@ class body be required.
 
 @_SpecialForm
 def Required(self, parameters):
-    """A special typing construct to mark a key of a total=False TypedDict
-    as required. For example:
+    """Special typing construct to mark a TypedDict key as required.
+
+    This is mainly useful for total=False TypedDicts.
+
+    For example::
 
         class Movie(TypedDict, total=False):
             title: Required[str]
@@ -3163,8 +3065,9 @@ class Movie(TypedDict, total=False):
 
 @_SpecialForm
 def NotRequired(self, parameters):
-    """A special typing construct to mark a key of a TypedDict as
-    potentially missing. For example:
+    """Special typing construct to mark a TypedDict key as potentially missing.
+
+    For example::
 
         class Movie(TypedDict):
             title: str
@@ -3180,10 +3083,13 @@ class Movie(TypedDict):
 
 
 class NewType:
-    """NewType creates simple unique types with almost zero
-    runtime overhead. NewType(name, tp) is considered a subtype of tp
+    """NewType creates simple unique types with almost zero runtime overhead.
+
+    NewType(name, tp) is considered a subtype of tp
     by static type checkers. At runtime, NewType(name, tp) returns
-    a dummy callable that simply returns its argument. Usage::
+    a dummy callable that simply returns its argument.
+
+    Usage::
 
         UserId = NewType('UserId', int)
 
@@ -3394,47 +3300,7 @@ def __enter__(self) -> 'TextIO':
         pass
 
 
-class _DeprecatedType(type):
-    def __getattribute__(cls, name):
-        if name not in ("__dict__", "__module__") and name in cls.__dict__:
-            warnings.warn(
-                f"{cls.__name__} is deprecated, import directly "
-                f"from typing instead. {cls.__name__} will be removed "
-                "in Python 3.12.",
-                DeprecationWarning,
-                stacklevel=2,
-            )
-        return super().__getattribute__(name)
-
-
-class io(metaclass=_DeprecatedType):
-    """Wrapper namespace for IO generic classes."""
-
-    __all__ = ['IO', 'TextIO', 'BinaryIO']
-    IO = IO
-    TextIO = TextIO
-    BinaryIO = BinaryIO
-
-
-io.__name__ = __name__ + '.io'
-sys.modules[io.__name__] = io
-
-Pattern = _alias(stdlib_re.Pattern, 1)
-Match = _alias(stdlib_re.Match, 1)
-
-class re(metaclass=_DeprecatedType):
-    """Wrapper namespace for re type aliases."""
-
-    __all__ = ['Pattern', 'Match']
-    Pattern = Pattern
-    Match = Match
-
-
-re.__name__ = __name__ + '.re'
-sys.modules[re.__name__] = re
-
-
-def reveal_type(obj: T, /) -> T:
+def reveal_type[T](obj: T, /) -> T:
     """Reveal the inferred type of a variable.
 
     When a static type checker encounters a call to ``reveal_type()``,
@@ -3443,17 +3309,21 @@ def reveal_type(obj: T, /) -> T:
         x: int = 1
         reveal_type(x)
 
-    Running a static type checker (e.g., ``mypy``) on this example
+    Running a static type checker (e.g., mypy) on this example
     will produce output similar to 'Revealed type is "builtins.int"'.
 
     At runtime, the function prints the runtime type of the
     argument and returns it unchanged.
-
     """
     print(f"Runtime type is {type(obj).__name__!r}", file=sys.stderr)
     return obj
 
 
+class _IdentityCallable(Protocol):
+    def __call__[T](self, arg: T, /) -> T:
+        ...
+
+
 def dataclass_transform(
     *,
     eq_default: bool = True,
@@ -3462,16 +3332,15 @@ def dataclass_transform(
     frozen_default: bool = False,
     field_specifiers: tuple[type[Any] | Callable[..., Any], ...] = (),
     **kwargs: Any,
-) -> Callable[[T], T]:
-    """Decorator that marks a function, class, or metaclass as providing
-    dataclass-like behavior.
+) -> _IdentityCallable:
+    """Decorator to mark an object as providing dataclass-like behaviour.
 
-    Example usage with a decorator function:
+    The decorator can be applied to a function, class, or metaclass.
 
-        T = TypeVar("T")
+    Example usage with a decorator function::
 
         @dataclass_transform()
-        def create_model(cls: type[T]) -> type[T]:
+        def create_model[T](cls: type[T]) -> type[T]:
             ...
             return cls
 
@@ -3480,7 +3349,7 @@ class CustomerModel:
             id: int
             name: str
 
-    On a base class:
+    On a base class::
 
         @dataclass_transform()
         class ModelBase: ...
@@ -3489,7 +3358,7 @@ class CustomerModel(ModelBase):
             id: int
             name: str
 
-    On a metaclass:
+    On a metaclass::
 
         @dataclass_transform()
         class ModelMeta(type): ...
@@ -3539,14 +3408,16 @@ def decorator(cls_or_fn):
     return decorator
 
 
+type _Func = Callable[..., Any]
+
 
-def override(method: F, /) -> F:
+def override[F: _Func](method: F, /) -> F:
     """Indicate that a method is intended to override a method in a base class.
 
-    Usage:
+    Usage::
 
         class Base:
-            def method(self) -> None: ...
+            def method(self) -> None:
                 pass
 
         class Child(Base):
@@ -3559,12 +3430,11 @@ def method(self) -> None:
     base class.  This helps prevent bugs that may occur when a base class is
     changed without an equivalent change to a child class.
 
-    There is no runtime checking of this property. The decorator sets the
-    ``__override__`` attribute to ``True`` on the decorated object to allow
-    runtime introspection.
+    There is no runtime checking of this property. The decorator attempts to
+    set the ``__override__`` attribute to ``True`` on the decorated object to
+    allow runtime introspection.
 
     See PEP 698 for details.
-
     """
     try:
         method.__override__ = True
@@ -3574,3 +3444,61 @@ def method(self) -> None:
         # read-only property, TypeError if it's a builtin class.
         pass
     return method
+
+
+def is_protocol(tp: type, /) -> bool:
+    """Return True if the given type is a Protocol.
+
+    Example::
+
+        >>> from typing import Protocol, is_protocol
+        >>> class P(Protocol):
+        ...     def a(self) -> str: ...
+        ...     b: int
+        >>> is_protocol(P)
+        True
+        >>> is_protocol(int)
+        False
+    """
+    return (
+        isinstance(tp, type)
+        and getattr(tp, '_is_protocol', False)
+        and tp != Protocol
+    )
+
+
+def get_protocol_members(tp: type, /) -> frozenset[str]:
+    """Return the set of members defined in a Protocol.
+
+    Example::
+
+        >>> from typing import Protocol, get_protocol_members
+        >>> class P(Protocol):
+        ...     def a(self) -> str: ...
+        ...     b: int
+        >>> get_protocol_members(P) == frozenset({'a', 'b'})
+        True
+
+    Raise a TypeError for arguments that are not Protocols.
+    """
+    if not is_protocol(tp):
+        raise TypeError(f'{tp!r} is not a Protocol')
+    return frozenset(tp.__protocol_attrs__)
+
+
+def __getattr__(attr):
+    """Improve the import time of the typing module.
+
+    Soft-deprecated objects which are costly to create
+    are only created on-demand here.
+    """
+    if attr in {"Pattern", "Match"}:
+        import re
+        obj = _alias(getattr(re, attr), 1)
+    elif attr in {"ContextManager", "AsyncContextManager"}:
+        import contextlib
+        obj = _alias(getattr(contextlib, f"Abstract{attr}"), 1, name=attr)
+    else:
+        raise AttributeError(f"module {__name__!r} has no attribute {attr!r}")
+    globals()[attr] = obj
+    return obj
diff --git a/Lib/unittest/__init__.py b/Lib/unittest/__init__.py
index 5bcbf834840b59..f1f6c911ef17d9 100644
--- a/Lib/unittest/__init__.py
+++ b/Lib/unittest/__init__.py
@@ -51,10 +51,6 @@ def testMultiply(self):
            'registerResult', 'removeResult', 'removeHandler',
            'addModuleCleanup', 'doModuleCleanups', 'enterModuleContext']
 
-# Expose obsolete functions for backwards compatibility
-# bpo-5846: Deprecated in Python 3.11, scheduled for removal in Python 3.13.
-__all__.extend(['getTestCaseNames', 'makeSuite', 'findTestCases'])
-
 __unittest = True
 
 from .result import TestResult
@@ -67,7 +63,6 @@ def testMultiply(self):
 from .runner import TextTestRunner, TextTestResult
 from .signals import installHandler, registerResult, removeResult, removeHandler
 # IsolatedAsyncioTestCase will be imported lazily.
-from .loader import makeSuite, getTestCaseNames, findTestCases
 
 
 # Lazy import of IsolatedAsyncioTestCase from .async_case
diff --git a/Lib/unittest/async_case.py b/Lib/unittest/async_case.py
index bd2a471156065b..63ff6a5d1f8b61 100644
--- a/Lib/unittest/async_case.py
+++ b/Lib/unittest/async_case.py
@@ -25,12 +25,15 @@ class IsolatedAsyncioTestCase(TestCase):
     # them inside the same task.
 
     # Note: the test case modifies event loop policy if the policy was not instantiated
-    # yet.
+    # yet, unless loop_factory=asyncio.EventLoop is set.
     # asyncio.get_event_loop_policy() creates a default policy on demand but never
     # returns None
     # I believe this is not an issue in user level tests but python itself for testing
     # should reset a policy in every test module
     # by calling asyncio.set_event_loop_policy(None) in tearDownModule()
+    # or set loop_factory=asyncio.EventLoop
+
+    loop_factory = None
 
     def __init__(self, methodName='runTest'):
         super().__init__(methodName)
@@ -118,7 +121,7 @@ def _callMaybeAsync(self, func, /, *args, **kwargs):
 
     def _setupAsyncioRunner(self):
         assert self._asyncioRunner is None, 'asyncio runner is already initialized'
-        runner = asyncio.Runner(debug=True)
+        runner = asyncio.Runner(debug=True, loop_factory=self.loop_factory)
         self._asyncioRunner = runner
 
     def _tearDownAsyncioRunner(self):
diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
index 001b640dc43ad6..811557498bb30e 100644
--- a/Lib/unittest/case.py
+++ b/Lib/unittest/case.py
@@ -606,7 +606,6 @@ def run(self, result=None):
         else:
             stopTestRun = None
 
-        result.startTest(self)
         try:
             testMethod = getattr(self, self._testMethodName)
             if (getattr(self.__class__, "__unittest_skip__", False) or
@@ -617,6 +616,9 @@ def run(self, result=None):
                 _addSkip(result, self, skip_why)
                 return result
 
+            # Increase the number of tests only if it hasn't been skipped
+            result.startTest(self)
+
             expecting_failure = (
                 getattr(self, "__unittest_expecting_failure__", False) or
                 getattr(testMethod, "__unittest_expecting_failure__", False)
diff --git a/Lib/unittest/loader.py b/Lib/unittest/loader.py
index b989284a640e14..9a3e5cc4bf30e5 100644
--- a/Lib/unittest/loader.py
+++ b/Lib/unittest/loader.py
@@ -84,9 +84,13 @@ def loadTestsFromTestCase(self, testCaseClass):
             raise TypeError("Test cases should not be derived from "
                             "TestSuite. Maybe you meant to derive from "
                             "TestCase?")
-        testCaseNames = self.getTestCaseNames(testCaseClass)
-        if not testCaseNames and hasattr(testCaseClass, 'runTest'):
-            testCaseNames = ['runTest']
+        if testCaseClass in (case.TestCase, case.FunctionTestCase):
+            # We don't load any tests from base types that should not be loaded.
+            testCaseNames = []
+        else:
+            testCaseNames = self.getTestCaseNames(testCaseClass)
+            if not testCaseNames and hasattr(testCaseClass, 'runTest'):
+                testCaseNames = ['runTest']
         loaded_suite = self.suiteClass(map(testCaseClass, testCaseNames))
         return loaded_suite
 
@@ -95,7 +99,11 @@ def loadTestsFromModule(self, module, *, pattern=None):
         tests = []
         for name in dir(module):
             obj = getattr(module, name)
-            if isinstance(obj, type) and issubclass(obj, case.TestCase):
+            if (
+                isinstance(obj, type)
+                and issubclass(obj, case.TestCase)
+                and obj not in (case.TestCase, case.FunctionTestCase)
+            ):
                 tests.append(self.loadTestsFromTestCase(obj))
 
         load_tests = getattr(module, 'load_tests', None)
@@ -164,7 +172,11 @@ def loadTestsFromName(self, name, module=None):
 
         if isinstance(obj, types.ModuleType):
             return self.loadTestsFromModule(obj)
-        elif isinstance(obj, type) and issubclass(obj, case.TestCase):
+        elif (
+            isinstance(obj, type)
+            and issubclass(obj, case.TestCase)
+            and obj not in (case.TestCase, case.FunctionTestCase)
+        ):
             return self.loadTestsFromTestCase(obj)
         elif (isinstance(obj, types.FunctionType) and
               isinstance(parent, type) and
@@ -437,47 +449,3 @@ def _find_test_path(self, full_path, pattern):
 
 
 defaultTestLoader = TestLoader()
-
-
-# These functions are considered obsolete for long time.
-# They will be removed in Python 3.13.
-
-def _makeLoader(prefix, sortUsing, suiteClass=None, testNamePatterns=None):
-    loader = TestLoader()
-    loader.sortTestMethodsUsing = sortUsing
-    loader.testMethodPrefix = prefix
-    loader.testNamePatterns = testNamePatterns
-    if suiteClass:
-        loader.suiteClass = suiteClass
-    return loader
-
-def getTestCaseNames(testCaseClass, prefix, sortUsing=util.three_way_cmp, testNamePatterns=None):
-    import warnings
-    warnings.warn(
-        "unittest.getTestCaseNames() is deprecated and will be removed in Python 3.13. "
-        "Please use unittest.TestLoader.getTestCaseNames() instead.",
-        DeprecationWarning, stacklevel=2
-    )
-    return _makeLoader(prefix, sortUsing, testNamePatterns=testNamePatterns).getTestCaseNames(testCaseClass)
-
-def makeSuite(testCaseClass, prefix='test', sortUsing=util.three_way_cmp,
-              suiteClass=suite.TestSuite):
-    import warnings
-    warnings.warn(
-        "unittest.makeSuite() is deprecated and will be removed in Python 3.13. "
-        "Please use unittest.TestLoader.loadTestsFromTestCase() instead.",
-        DeprecationWarning, stacklevel=2
-    )
-    return _makeLoader(prefix, sortUsing, suiteClass).loadTestsFromTestCase(
-        testCaseClass)
-
-def findTestCases(module, prefix='test', sortUsing=util.three_way_cmp,
-                  suiteClass=suite.TestSuite):
-    import warnings
-    warnings.warn(
-        "unittest.findTestCases() is deprecated and will be removed in Python 3.13. "
-        "Please use unittest.TestLoader.loadTestsFromModule() instead.",
-        DeprecationWarning, stacklevel=2
-    )
-    return _makeLoader(prefix, sortUsing, suiteClass).loadTestsFromModule(\
-        module)
diff --git a/Lib/unittest/main.py b/Lib/unittest/main.py
index 51b81a6c3728bb..d29a9f91fcca42 100644
--- a/Lib/unittest/main.py
+++ b/Lib/unittest/main.py
@@ -3,7 +3,6 @@
 import sys
 import argparse
 import os
-import warnings
 
 from . import loader, runner
 from .signals import installHandler
@@ -104,16 +103,6 @@ def __init__(self, module='__main__', defaultTest=None, argv=None,
         self.parseArgs(argv)
         self.runTests()
 
-    def usageExit(self, msg=None):
-        warnings.warn("TestProgram.usageExit() is deprecated and will be"
-                      " removed in Python 3.13", DeprecationWarning)
-        if msg:
-            print(msg)
-        if self._discovery_parser is None:
-            self._initArgParsers()
-        self._print_help()
-        sys.exit(2)
-
     def _print_help(self, *args, **kwargs):
         if self.module is None:
             print(self._main_parser.format_help())
diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index 7ca085760650af..c6b46eea657a21 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -14,6 +14,7 @@
     'call',
     'create_autospec',
     'AsyncMock',
+    'ThreadingMock',
     'FILTER_DIR',
     'NonCallableMock',
     'NonCallableMagicMock',
@@ -32,6 +33,7 @@
 import builtins
 import pkgutil
 from asyncio import iscoroutinefunction
+import threading
 from types import CodeType, ModuleType, MethodType
 from unittest.util import safe_repr
 from functools import wraps, partial
@@ -204,6 +206,28 @@ def checksig(*args, **kwargs):
     _setup_func(funcopy, mock, sig)
     return funcopy
 
+def _set_async_signature(mock, original, instance=False, is_async_mock=False):
+    # creates an async function with signature (*args, **kwargs) that delegates to a
+    # mock. It still does signature checking by calling a lambda with the same
+    # signature as the original.
+
+    skipfirst = isinstance(original, type)
+    func, sig = _get_signature_object(original, instance, skipfirst)
+    def checksig(*args, **kwargs):
+        sig.bind(*args, **kwargs)
+    _copy_func_details(func, checksig)
+
+    name = original.__name__
+    context = {'_checksig_': checksig, 'mock': mock}
+    src = """async def %s(*args, **kwargs):
+    _checksig_(*args, **kwargs)
+    return await mock(*args, **kwargs)""" % name
+    exec (src, context)
+    funcopy = context[name]
+    _setup_func(funcopy, mock, sig)
+    _setup_async_mock(funcopy)
+    return funcopy
+
 
 def _setup_func(funcopy, mock, sig):
     funcopy.mock = mock
@@ -526,7 +550,13 @@ def _mock_add_spec(self, spec, spec_set, _spec_as_instance=False,
             spec_list = dir(spec)
 
             for attr in spec_list:
-                if iscoroutinefunction(getattr(spec, attr, None)):
+                static_attr = inspect.getattr_static(spec, attr, None)
+                unwrapped_attr = static_attr
+                try:
+                    unwrapped_attr = inspect.unwrap(unwrapped_attr)
+                except ValueError:
+                    pass
+                if iscoroutinefunction(unwrapped_attr):
                     _spec_asyncs.append(attr)
 
             spec = spec_list
@@ -827,7 +857,7 @@ def _format_mock_call_signature(self, args, kwargs):
 
 
     def _format_mock_failure_message(self, args, kwargs, action='call'):
-        message = 'expected %s not found.\nExpected: %s\nActual: %s'
+        message = 'expected %s not found.\nExpected: %s\n  Actual: %s'
         expected_string = self._format_mock_call_signature(args, kwargs)
         call_args = self.call_args
         actual_string = self._format_mock_call_signature(*call_args)
@@ -930,7 +960,7 @@ def assert_called_with(self, /, *args, **kwargs):
         if self.call_args is None:
             expected = self._format_mock_call_signature(args, kwargs)
             actual = 'not called.'
-            error_message = ('expected call not found.\nExpected: %s\nActual: %s'
+            error_message = ('expected call not found.\nExpected: %s\n  Actual: %s'
                     % (expected, actual))
             raise AssertionError(error_message)
 
@@ -981,7 +1011,7 @@ def assert_has_calls(self, calls, any_order=False):
                 raise AssertionError(
                     f'{problem}\n'
                     f'Expected: {_CallList(calls)}'
-                    f'{self._calls_repr(prefix="Actual").rstrip(".")}'
+                    f'{self._calls_repr(prefix="  Actual").rstrip(".")}'
                 ) from cause
             return
 
@@ -2739,9 +2769,10 @@ def create_autospec(spec, spec_set=False, instance=False, _parent=None,
     if isinstance(spec, FunctionTypes):
         # should only happen at the top level because we don't
         # recurse for functions
-        mock = _set_signature(mock, spec)
         if is_async_func:
-            _setup_async_mock(mock)
+            mock = _set_async_signature(mock, spec)
+        else:
+            mock = _set_signature(mock, spec)
     else:
         _check_signature(spec, mock, is_type, instance)
 
@@ -2907,6 +2938,9 @@ def _next_side_effect():
             return handle.readline.return_value
         return next(_state[0])
 
+    def _exit_side_effect(exctype, excinst, exctb):
+        handle.close()
+
     global file_spec
     if file_spec is None:
         import _io
@@ -2933,6 +2967,7 @@ def _next_side_effect():
     handle.readlines.side_effect = _readlines_side_effect
     handle.__iter__.side_effect = _iter_side_effect
     handle.__next__.side_effect = _next_side_effect
+    handle.__exit__.side_effect = _exit_side_effect
 
     def reset_data(*args, **kwargs):
         _state[0] = _to_stream(read_data)
@@ -2965,6 +3000,96 @@ def __set__(self, obj, val):
         self(val)
 
 
+_timeout_unset = sentinel.TIMEOUT_UNSET
+
+class ThreadingMixin(Base):
+
+    DEFAULT_TIMEOUT = None
+
+    def _get_child_mock(self, /, **kw):
+        if isinstance(kw.get("parent"), ThreadingMixin):
+            kw["timeout"] = kw["parent"]._mock_wait_timeout
+        elif isinstance(kw.get("_new_parent"), ThreadingMixin):
+            kw["timeout"] = kw["_new_parent"]._mock_wait_timeout
+        return super()._get_child_mock(**kw)
+
+    def __init__(self, *args, timeout=_timeout_unset, **kwargs):
+        super().__init__(*args, **kwargs)
+        if timeout is _timeout_unset:
+            timeout = self.DEFAULT_TIMEOUT
+        self.__dict__["_mock_event"] = threading.Event()  # Event for any call
+        self.__dict__["_mock_calls_events"] = []  # Events for each of the calls
+        self.__dict__["_mock_calls_events_lock"] = threading.Lock()
+        self.__dict__["_mock_wait_timeout"] = timeout
+
+    def reset_mock(self, /, *args, **kwargs):
+        """
+        See :func:`.Mock.reset_mock()`
+        """
+        super().reset_mock(*args, **kwargs)
+        self.__dict__["_mock_event"] = threading.Event()
+        self.__dict__["_mock_calls_events"] = []
+
+    def __get_event(self, expected_args, expected_kwargs):
+        with self._mock_calls_events_lock:
+            for args, kwargs, event in self._mock_calls_events:
+                if (args, kwargs) == (expected_args, expected_kwargs):
+                    return event
+            new_event = threading.Event()
+            self._mock_calls_events.append((expected_args, expected_kwargs, new_event))
+        return new_event
+
+    def _mock_call(self, *args, **kwargs):
+        ret_value = super()._mock_call(*args, **kwargs)
+
+        call_event = self.__get_event(args, kwargs)
+        call_event.set()
+
+        self._mock_event.set()
+
+        return ret_value
+
+    def wait_until_called(self, *, timeout=_timeout_unset):
+        """Wait until the mock object is called.
+
+        `timeout` - time to wait for in seconds, waits forever otherwise.
+        Defaults to the constructor provided timeout.
+        Use None to block undefinetively.
+        """
+        if timeout is _timeout_unset:
+            timeout = self._mock_wait_timeout
+        if not self._mock_event.wait(timeout=timeout):
+            msg = (f"{self._mock_name or 'mock'} was not called before"
+                   f" timeout({timeout}).")
+            raise AssertionError(msg)
+
+    def wait_until_any_call_with(self, *args, **kwargs):
+        """Wait until the mock object is called with given args.
+
+        Waits for the timeout in seconds provided in the constructor.
+        """
+        event = self.__get_event(args, kwargs)
+        if not event.wait(timeout=self._mock_wait_timeout):
+            expected_string = self._format_mock_call_signature(args, kwargs)
+            raise AssertionError(f'{expected_string} call not found')
+
+
+class ThreadingMock(ThreadingMixin, MagicMixin, Mock):
+    """
+    A mock that can be used to wait until on calls happening
+    in a different thread.
+
+    The constructor can take a `timeout` argument which
+    controls the timeout in seconds for all `wait` calls of the mock.
+
+    You can change the default timeout of all instances via the
+    `ThreadingMock.DEFAULT_TIMEOUT` attribute.
+
+    If no timeout is set, it will block undefinetively.
+    """
+    pass
+
+
 def seal(mock):
     """Disable the automatic generation of child mocks.
 
diff --git a/Lib/unittest/result.py b/Lib/unittest/result.py
index 7757dba9670b43..9e56f658027f4d 100644
--- a/Lib/unittest/result.py
+++ b/Lib/unittest/result.py
@@ -97,10 +97,12 @@ def _restoreStdout(self):
 
             sys.stdout = self._original_stdout
             sys.stderr = self._original_stderr
-            self._stdout_buffer.seek(0)
-            self._stdout_buffer.truncate()
-            self._stderr_buffer.seek(0)
-            self._stderr_buffer.truncate()
+            if self._stdout_buffer is not None:
+                self._stdout_buffer.seek(0)
+                self._stdout_buffer.truncate()
+            if self._stderr_buffer is not None:
+                self._stderr_buffer.seek(0)
+                self._stderr_buffer.truncate()
 
     def stopTestRun(self):
         """Called once after all tests are executed.
@@ -166,7 +168,8 @@ def addDuration(self, test, elapsed):
         """
         # support for a TextTestRunner using an old TestResult class
         if hasattr(self, "collectedDurations"):
-            self.collectedDurations.append((test, elapsed))
+            # Pass test repr and not the test object itself to avoid resources leak
+            self.collectedDurations.append((str(test), elapsed))
 
     def wasSuccessful(self):
         """Tells whether or not this result was a success."""
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index da0073969bff0b..c129b0d7971d71 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -25,6 +25,10 @@
 scenarios for parsing, and for backward compatibility purposes, some
 parsing quirks from older RFCs are retained. The testcases in
 test_urlparse.py provides a good indicator of parsing behavior.
+
+The WHATWG URL Parser spec should also be considered.  We are not compliant with
+it either due to existing user code API behavior expectations (Hyrum's Law).
+It serves as a useful guide when making changes.
 """
 
 from collections import namedtuple
@@ -48,18 +52,18 @@
 
 uses_relative = ['', 'ftp', 'http', 'gopher', 'nntp', 'imap',
                  'wais', 'file', 'https', 'shttp', 'mms',
-                 'prospero', 'rtsp', 'rtspu', 'sftp',
+                 'prospero', 'rtsp', 'rtsps', 'rtspu', 'sftp',
                  'svn', 'svn+ssh', 'ws', 'wss']
 
 uses_netloc = ['', 'ftp', 'http', 'gopher', 'nntp', 'telnet',
                'imap', 'wais', 'file', 'mms', 'https', 'shttp',
-               'snews', 'prospero', 'rtsp', 'rtspu', 'rsync',
+               'snews', 'prospero', 'rtsp', 'rtsps', 'rtspu', 'rsync',
                'svn', 'svn+ssh', 'sftp', 'nfs', 'git', 'git+ssh',
                'ws', 'wss', 'itms-services']
 
 uses_params = ['', 'ftp', 'hdl', 'prospero', 'http', 'imap',
-               'https', 'shttp', 'rtsp', 'rtspu', 'sip', 'sips',
-               'mms', 'sftp', 'tel']
+               'https', 'shttp', 'rtsp', 'rtsps', 'rtspu', 'sip',
+               'sips', 'mms', 'sftp', 'tel']
 
 # These are not actually used anymore, but should stay for backwards
 # compatibility.  (They are undocumented, but have a public-looking name.)
@@ -68,7 +72,7 @@
                     'telnet', 'wais', 'imap', 'snews', 'sip', 'sips']
 
 uses_query = ['', 'http', 'wais', 'imap', 'https', 'shttp', 'mms',
-              'gopher', 'rtsp', 'rtspu', 'sip', 'sips']
+              'gopher', 'rtsp', 'rtsps', 'rtspu', 'sip', 'sips']
 
 uses_fragment = ['', 'ftp', 'hdl', 'http', 'gopher', 'news',
                  'nntp', 'wais', 'https', 'shttp', 'snews',
@@ -80,6 +84,10 @@
                 '0123456789'
                 '+-.')
 
+# Leading and trailing C0 control and space to be stripped per WHATWG spec.
+# == "".join([chr(i) for i in range(0, 0x20 + 1)])
+_WHATWG_C0_CONTROL_OR_SPACE = '\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f '
+
 # Unsafe bytes to be removed per WHATWG spec
 _UNSAFE_URL_BYTES_TO_REMOVE = ['\t', '\r', '\n']
 
@@ -464,6 +472,10 @@ def urlsplit(url, scheme='', allow_fragments=True):
     """
 
     url, scheme, _coerce_result = _coerce_args(url, scheme)
+    # Only lstrip url as some applications rely on preserving trailing space.
+    # (https://url.spec.whatwg.org/#concept-basic-url-parser would strip both)
+    url = url.lstrip(_WHATWG_C0_CONTROL_OR_SPACE)
+    scheme = scheme.strip(_WHATWG_C0_CONTROL_OR_SPACE)
 
     for b in _UNSAFE_URL_BYTES_TO_REMOVE:
         url = url.replace(b, "")
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 5314b3f26021eb..1d03259b918c33 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -136,7 +136,7 @@
 
 _opener = None
 def urlopen(url, data=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
-            *, cafile=None, capath=None, cadefault=False, context=None):
+            *, context=None):
     '''Open the URL url, which can be either a string or a Request object.
 
     *data* must be an object specifying additional data to be sent to
@@ -154,14 +154,6 @@ def urlopen(url, data=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
     If *context* is specified, it must be a ssl.SSLContext instance describing
     the various SSL options. See HTTPSConnection for more details.
 
-    The optional *cafile* and *capath* parameters specify a set of trusted CA
-    certificates for HTTPS requests. cafile should point to a single file
-    containing a bundle of CA certificates, whereas capath should point to a
-    directory of hashed certificate files. More information can be found in
-    ssl.SSLContext.load_verify_locations().
-
-    The *cadefault* parameter is ignored.
-
 
     This function always returns an object which can work as a
     context manager and has the properties url, headers, and status.
@@ -187,25 +179,7 @@ def urlopen(url, data=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
 
     '''
     global _opener
-    if cafile or capath or cadefault:
-        import warnings
-        warnings.warn("cafile, capath and cadefault are deprecated, use a "
-                      "custom context instead.", DeprecationWarning, 2)
-        if context is not None:
-            raise ValueError(
-                "You can't pass both context and any of cafile, capath, and "
-                "cadefault"
-            )
-        if not _have_ssl:
-            raise ValueError('SSL support not available')
-        context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH,
-                                             cafile=cafile,
-                                             capath=capath)
-        # send ALPN extension to indicate HTTP/1.1 protocol
-        context.set_alpn_protocols(['http/1.1'])
-        https_handler = HTTPSHandler(context=context)
-        opener = build_opener(https_handler)
-    elif context:
+    if context:
         https_handler = HTTPSHandler(context=context)
         opener = build_opener(https_handler)
     elif _opener is None:
diff --git a/Lib/uu.py b/Lib/uu.py
deleted file mode 100644
index 26bb59ae073ec5..00000000000000
--- a/Lib/uu.py
+++ /dev/null
@@ -1,216 +0,0 @@
-#! /usr/bin/env python3
-
-# Copyright 1994 by Lance Ellinghouse
-# Cathedral City, California Republic, United States of America.
-#                        All Rights Reserved
-# Permission to use, copy, modify, and distribute this software and its
-# documentation for any purpose and without fee is hereby granted,
-# provided that the above copyright notice appear in all copies and that
-# both that copyright notice and this permission notice appear in
-# supporting documentation, and that the name of Lance Ellinghouse
-# not be used in advertising or publicity pertaining to distribution
-# of the software without specific, written prior permission.
-# LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
-# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
-# FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE
-# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
-# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-#
-# Modified by Jack Jansen, CWI, July 1995:
-# - Use binascii module to do the actual line-by-line conversion
-#   between ascii and binary. This results in a 1000-fold speedup. The C
-#   version is still 5 times faster, though.
-# - Arguments more compliant with python standard
-
-"""Implementation of the UUencode and UUdecode functions.
-
-encode(in_file, out_file [,name, mode], *, backtick=False)
-decode(in_file [, out_file, mode, quiet])
-"""
-
-import binascii
-import os
-import sys
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-__all__ = ["Error", "encode", "decode"]
-
-class Error(Exception):
-    pass
-
-def encode(in_file, out_file, name=None, mode=None, *, backtick=False):
-    """Uuencode file"""
-    #
-    # If in_file is a pathname open it and change defaults
-    #
-    opened_files = []
-    try:
-        if in_file == '-':
-            in_file = sys.stdin.buffer
-        elif isinstance(in_file, str):
-            if name is None:
-                name = os.path.basename(in_file)
-            if mode is None:
-                try:
-                    mode = os.stat(in_file).st_mode
-                except AttributeError:
-                    pass
-            in_file = open(in_file, 'rb')
-            opened_files.append(in_file)
-        #
-        # Open out_file if it is a pathname
-        #
-        if out_file == '-':
-            out_file = sys.stdout.buffer
-        elif isinstance(out_file, str):
-            out_file = open(out_file, 'wb')
-            opened_files.append(out_file)
-        #
-        # Set defaults for name and mode
-        #
-        if name is None:
-            name = '-'
-        if mode is None:
-            mode = 0o666
-
-        #
-        # Remove newline chars from name
-        #
-        name = name.replace('\n','\\n')
-        name = name.replace('\r','\\r')
-
-        #
-        # Write the data
-        #
-        out_file.write(('begin %o %s\n' % ((mode & 0o777), name)).encode("ascii"))
-        data = in_file.read(45)
-        while len(data) > 0:
-            out_file.write(binascii.b2a_uu(data, backtick=backtick))
-            data = in_file.read(45)
-        if backtick:
-            out_file.write(b'`\nend\n')
-        else:
-            out_file.write(b' \nend\n')
-    finally:
-        for f in opened_files:
-            f.close()
-
-
-def decode(in_file, out_file=None, mode=None, quiet=False):
-    """Decode uuencoded file"""
-    #
-    # Open the input file, if needed.
-    #
-    opened_files = []
-    if in_file == '-':
-        in_file = sys.stdin.buffer
-    elif isinstance(in_file, str):
-        in_file = open(in_file, 'rb')
-        opened_files.append(in_file)
-
-    try:
-        #
-        # Read until a begin is encountered or we've exhausted the file
-        #
-        while True:
-            hdr = in_file.readline()
-            if not hdr:
-                raise Error('No valid begin line found in input file')
-            if not hdr.startswith(b'begin'):
-                continue
-            hdrfields = hdr.split(b' ', 2)
-            if len(hdrfields) == 3 and hdrfields[0] == b'begin':
-                try:
-                    int(hdrfields[1], 8)
-                    break
-                except ValueError:
-                    pass
-        if out_file is None:
-            # If the filename isn't ASCII, what's up with that?!?
-            out_file = hdrfields[2].rstrip(b' \t\r\n\f').decode("ascii")
-            if os.path.exists(out_file):
-                raise Error(f'Cannot overwrite existing file: {out_file}')
-            if (out_file.startswith(os.sep) or
-                f'..{os.sep}' in out_file or (
-                    os.altsep and
-                    (out_file.startswith(os.altsep) or
-                     f'..{os.altsep}' in out_file))
-               ):
-                raise Error(f'Refusing to write to {out_file} due to directory traversal')
-        if mode is None:
-            mode = int(hdrfields[1], 8)
-        #
-        # Open the output file
-        #
-        if out_file == '-':
-            out_file = sys.stdout.buffer
-        elif isinstance(out_file, str):
-            fp = open(out_file, 'wb')
-            os.chmod(out_file, mode)
-            out_file = fp
-            opened_files.append(out_file)
-        #
-        # Main decoding loop
-        #
-        s = in_file.readline()
-        while s and s.strip(b' \t\r\n\f') != b'end':
-            try:
-                data = binascii.a2b_uu(s)
-            except binascii.Error as v:
-                # Workaround for broken uuencoders by /Fredrik Lundh
-                nbytes = (((s[0]-32) & 63) * 4 + 5) // 3
-                data = binascii.a2b_uu(s[:nbytes])
-                if not quiet:
-                    sys.stderr.write("Warning: %s\n" % v)
-            out_file.write(data)
-            s = in_file.readline()
-        if not s:
-            raise Error('Truncated input file')
-    finally:
-        for f in opened_files:
-            f.close()
-
-def test():
-    """uuencode/uudecode main program"""
-
-    import optparse
-    parser = optparse.OptionParser(usage='usage: %prog [-d] [-t] [input [output]]')
-    parser.add_option('-d', '--decode', dest='decode', help='Decode (instead of encode)?', default=False, action='store_true')
-    parser.add_option('-t', '--text', dest='text', help='data is text, encoded format unix-compatible text?', default=False, action='store_true')
-
-    (options, args) = parser.parse_args()
-    if len(args) > 2:
-        parser.error('incorrect number of arguments')
-        sys.exit(1)
-
-    # Use the binary streams underlying stdin/stdout
-    input = sys.stdin.buffer
-    output = sys.stdout.buffer
-    if len(args) > 0:
-        input = args[0]
-    if len(args) > 1:
-        output = args[1]
-
-    if options.decode:
-        if options.text:
-            if isinstance(output, str):
-                output = open(output, 'wb')
-            else:
-                print(sys.argv[0], ': cannot do -t to stdout')
-                sys.exit(1)
-        decode(input, output)
-    else:
-        if options.text:
-            if isinstance(input, str):
-                input = open(input, 'rb')
-            else:
-                print(sys.argv[0], ': cannot do -t from stdin')
-                sys.exit(1)
-        encode(input, output)
-
-if __name__ == '__main__':
-    test()
diff --git a/Lib/venv/__init__.py b/Lib/venv/__init__.py
index 2173c9b13e5cf7..d960bf3bd82ac5 100644
--- a/Lib/venv/__init__.py
+++ b/Lib/venv/__init__.py
@@ -41,11 +41,13 @@ class EnvBuilder:
                      environment
     :param prompt: Alternative terminal prefix for the environment.
     :param upgrade_deps: Update the base venv modules to the latest on PyPI
+    :param scm_ignore_files: Create ignore files for the SCMs specified by the
+                             iterable.
     """
 
     def __init__(self, system_site_packages=False, clear=False,
                  symlinks=False, upgrade=False, with_pip=False, prompt=None,
-                 upgrade_deps=False):
+                 upgrade_deps=False, *, scm_ignore_files=frozenset()):
         self.system_site_packages = system_site_packages
         self.clear = clear
         self.symlinks = symlinks
@@ -56,6 +58,7 @@ def __init__(self, system_site_packages=False, clear=False,
             prompt = os.path.basename(os.getcwd())
         self.prompt = prompt
         self.upgrade_deps = upgrade_deps
+        self.scm_ignore_files = frozenset(map(str.lower, scm_ignore_files))
 
     def create(self, env_dir):
         """
@@ -66,6 +69,8 @@ def create(self, env_dir):
         """
         env_dir = os.path.abspath(env_dir)
         context = self.ensure_directories(env_dir)
+        for scm in self.scm_ignore_files:
+            getattr(self, f"create_{scm}_ignore_file")(context)
         # See issue 24875. We need system_site_packages to be False
         # until after pip is installed.
         true_system_site_packages = self.system_site_packages
@@ -210,6 +215,8 @@ def create_configuration(self, context):
                 args.append('--upgrade-deps')
             if self.orig_prompt is not None:
                 args.append(f'--prompt="{self.orig_prompt}"')
+            if not self.scm_ignore_files:
+                args.append('--without-scm-ignore-files')
 
             args.append(context.env_dir)
             args = ' '.join(args)
@@ -278,6 +285,19 @@ def symlink_or_copy(self, src, dst, relative_symlinks_ok=False):
 
             shutil.copyfile(src, dst)
 
+    def create_git_ignore_file(self, context):
+        """
+        Create a .gitignore file in the environment directory.
+
+        The contents of the file cause the entire environment directory to be
+        ignored by git.
+        """
+        gitignore_path = os.path.join(context.env_dir, '.gitignore')
+        with open(gitignore_path, 'w', encoding='utf-8') as file:
+            file.write('# Created by venv; '
+                       'see https://docs.python.org/3/library/venv.html\n')
+            file.write('*\n')
+
     def setup_python(self, context):
         """
         Set up a Python executable in the environment.
@@ -461,11 +481,13 @@ def upgrade_dependencies(self, context):
 
 
 def create(env_dir, system_site_packages=False, clear=False,
-           symlinks=False, with_pip=False, prompt=None, upgrade_deps=False):
+           symlinks=False, with_pip=False, prompt=None, upgrade_deps=False,
+           *, scm_ignore_files=frozenset()):
     """Create a virtual environment in a directory."""
     builder = EnvBuilder(system_site_packages=system_site_packages,
                          clear=clear, symlinks=symlinks, with_pip=with_pip,
-                         prompt=prompt, upgrade_deps=upgrade_deps)
+                         prompt=prompt, upgrade_deps=upgrade_deps,
+                         scm_ignore_files=scm_ignore_files)
     builder.create(env_dir)
 
 
@@ -525,6 +547,11 @@ def main(args=None):
                         dest='upgrade_deps',
                         help=f'Upgrade core dependencies ({", ".join(CORE_VENV_DEPS)}) '
                              'to the latest version in PyPI')
+    parser.add_argument('--without-scm-ignore-files', dest='scm_ignore_files',
+                        action='store_const', const=frozenset(),
+                        default=frozenset(['git']),
+                        help='Skips adding SCM ignore files to the environment '
+                             'directory (Git is supported by default).')
     options = parser.parse_args(args)
     if options.upgrade and options.clear:
         raise ValueError('you cannot supply --upgrade and --clear together.')
@@ -534,7 +561,8 @@ def main(args=None):
                          upgrade=options.upgrade,
                          with_pip=options.with_pip,
                          prompt=options.prompt,
-                         upgrade_deps=options.upgrade_deps)
+                         upgrade_deps=options.upgrade_deps,
+                         scm_ignore_files=options.scm_ignore_files)
     for d in options.dirs:
         builder.create(d)
 
diff --git a/Lib/venv/__main__.py b/Lib/venv/__main__.py
index 912423e4a78198..88f55439dc210c 100644
--- a/Lib/venv/__main__.py
+++ b/Lib/venv/__main__.py
@@ -6,5 +6,5 @@
     main()
     rc = 0
 except Exception as e:
-    print('Error: %s' % e, file=sys.stderr)
+    print('Error:', e, file=sys.stderr)
 sys.exit(rc)
diff --git a/Lib/venv/scripts/common/Activate.ps1 b/Lib/venv/scripts/common/Activate.ps1
index eeea3583fa130d..d75b8fbcfc7778 100644
--- a/Lib/venv/scripts/common/Activate.ps1
+++ b/Lib/venv/scripts/common/Activate.ps1
@@ -219,6 +219,8 @@ deactivate -nondestructive
 # that there is an activated venv.
 $env:VIRTUAL_ENV = $VenvDir
 
+$env:VIRTUAL_ENV_PROMPT = $Prompt
+
 if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
 
     Write-Verbose "Setting prompt to '$Prompt'"
@@ -233,7 +235,6 @@ if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
         Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
         _OLD_VIRTUAL_PROMPT
     }
-    $env:VIRTUAL_ENV_PROMPT = $Prompt
 }
 
 # Clear PYTHONHOME
diff --git a/Lib/venv/scripts/common/activate b/Lib/venv/scripts/common/activate
index 408df5cb93b9e9..6fdf423a1c516a 100644
--- a/Lib/venv/scripts/common/activate
+++ b/Lib/venv/scripts/common/activate
@@ -14,12 +14,9 @@ deactivate () {
         unset _OLD_VIRTUAL_PYTHONHOME
     fi
 
-    # This should detect bash and zsh, which have a hash command that must
-    # be called to get it to forget past commands.  Without forgetting
+    # Call hash to forget past commands. Without forgetting
     # past commands the $PATH changes we made may not be respected
-    if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
-        hash -r 2> /dev/null
-    fi
+    hash -r 2> /dev/null
 
     if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
         PS1="${_OLD_VIRTUAL_PS1:-}"
@@ -39,7 +36,7 @@ deactivate () {
 deactivate nondestructive
 
 # on Windows, a path can contain colons and backslashes and has to be converted:
-if [ "$OSTYPE" = "cygwin" ] || [ "$OSTYPE" = "msys" ] ; then
+if [ "${OSTYPE:-}" = "cygwin" ] || [ "${OSTYPE:-}" = "msys" ] ; then
     # transform D:\path\to\venv to /d/path/to/venv on MSYS
     # and to /cygdrive/d/path/to/venv on Cygwin
     export VIRTUAL_ENV=$(cygpath "__VENV_DIR__")
@@ -52,6 +49,9 @@ _OLD_VIRTUAL_PATH="$PATH"
 PATH="$VIRTUAL_ENV/__VENV_BIN_NAME__:$PATH"
 export PATH
 
+VIRTUAL_ENV_PROMPT="__VENV_PROMPT__"
+export VIRTUAL_ENV_PROMPT
+
 # unset PYTHONHOME if set
 # this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
 # could use `if (set -u; : $PYTHONHOME) ;` in bash
@@ -64,13 +64,8 @@ if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
     _OLD_VIRTUAL_PS1="${PS1:-}"
     PS1="__VENV_PROMPT__${PS1:-}"
     export PS1
-    VIRTUAL_ENV_PROMPT="__VENV_PROMPT__"
-    export VIRTUAL_ENV_PROMPT
 fi
 
-# This should detect bash and zsh, which have a hash command that must
-# be called to get it to forget past commands.  Without forgetting
+# Call hash to forget past commands. Without forgetting
 # past commands the $PATH changes we made may not be respected
-if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
-    hash -r 2> /dev/null
-fi
+hash -r 2> /dev/null
diff --git a/Lib/venv/scripts/posix/activate.csh b/Lib/venv/scripts/posix/activate.csh
index 5e8d66fa9e5061..9caf138a919a86 100644
--- a/Lib/venv/scripts/posix/activate.csh
+++ b/Lib/venv/scripts/posix/activate.csh
@@ -13,13 +13,13 @@ setenv VIRTUAL_ENV "__VENV_DIR__"
 
 set _OLD_VIRTUAL_PATH="$PATH"
 setenv PATH "$VIRTUAL_ENV/__VENV_BIN_NAME__:$PATH"
+setenv VIRTUAL_ENV_PROMPT "__VENV_PROMPT__"
 
 
 set _OLD_VIRTUAL_PROMPT="$prompt"
 
 if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
     set prompt = "__VENV_PROMPT__$prompt"
-    setenv VIRTUAL_ENV_PROMPT "__VENV_PROMPT__"
 endif
 
 alias pydoc python -m pydoc
diff --git a/Lib/venv/scripts/posix/activate.fish b/Lib/venv/scripts/posix/activate.fish
index 91ad6442e05692..565df23d1e2a13 100644
--- a/Lib/venv/scripts/posix/activate.fish
+++ b/Lib/venv/scripts/posix/activate.fish
@@ -37,6 +37,7 @@ set -gx VIRTUAL_ENV "__VENV_DIR__"
 
 set -gx _OLD_VIRTUAL_PATH $PATH
 set -gx PATH "$VIRTUAL_ENV/__VENV_BIN_NAME__" $PATH
+set -gx VIRTUAL_ENV_PROMPT "__VENV_PROMPT__"
 
 # Unset PYTHONHOME if set.
 if set -q PYTHONHOME
@@ -65,5 +66,4 @@ if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
     end
 
     set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
-    set -gx VIRTUAL_ENV_PROMPT "__VENV_PROMPT__"
 end
diff --git a/Lib/warnings.py b/Lib/warnings.py
index 98ae708ca3401d..b8ff078569d2ce 100644
--- a/Lib/warnings.py
+++ b/Lib/warnings.py
@@ -5,7 +5,7 @@
 
 __all__ = ["warn", "warn_explicit", "showwarning",
            "formatwarning", "filterwarnings", "simplefilter",
-           "resetwarnings", "catch_warnings"]
+           "resetwarnings", "catch_warnings", "deprecated"]
 
 def showwarning(message, category, filename, lineno, file=None, line=None):
     """Hook to write a warning to a file; replace if you like."""
@@ -139,14 +139,18 @@ def filterwarnings(action, message="", category=Warning, module="", lineno=0,
     'lineno' -- an integer line number, 0 matches all warnings
     'append' -- if true, append to the list of filters
     """
-    assert action in ("error", "ignore", "always", "default", "module",
-                      "once"), "invalid action: %r" % (action,)
-    assert isinstance(message, str), "message must be a string"
-    assert isinstance(category, type), "category must be a class"
-    assert issubclass(category, Warning), "category must be a Warning subclass"
-    assert isinstance(module, str), "module must be a string"
-    assert isinstance(lineno, int) and lineno >= 0, \
-           "lineno must be an int >= 0"
+    if action not in {"error", "ignore", "always", "default", "module", "once"}:
+        raise ValueError(f"invalid action: {action!r}")
+    if not isinstance(message, str):
+        raise TypeError("message must be a string")
+    if not isinstance(category, type) or not issubclass(category, Warning):
+        raise TypeError("category must be a Warning subclass")
+    if not isinstance(module, str):
+        raise TypeError("module must be a string")
+    if not isinstance(lineno, int):
+        raise TypeError("lineno must be an int")
+    if lineno < 0:
+        raise ValueError("lineno must be an int >= 0")
 
     if message or module:
         import re
@@ -172,10 +176,12 @@ def simplefilter(action, category=Warning, lineno=0, append=False):
     'lineno' -- an integer line number, 0 matches all warnings
     'append' -- if true, append to the list of filters
     """
-    assert action in ("error", "ignore", "always", "default", "module",
-                      "once"), "invalid action: %r" % (action,)
-    assert isinstance(lineno, int) and lineno >= 0, \
-           "lineno must be an int >= 0"
+    if action not in {"error", "ignore", "always", "default", "module", "once"}:
+        raise ValueError(f"invalid action: {action!r}")
+    if not isinstance(lineno, int):
+        raise TypeError("lineno must be an int")
+    if lineno < 0:
+        raise ValueError("lineno must be an int >= 0")
     _add_filter(action, None, category, None, lineno, append=append)
 
 def _add_filter(*item, append):
@@ -508,6 +514,135 @@ def __exit__(self, *exc_info):
         self._module._showwarnmsg_impl = self._showwarnmsg_impl
 
 
+class deprecated:
+    """Indicate that a class, function or overload is deprecated.
+
+    When this decorator is applied to an object, the type checker
+    will generate a diagnostic on usage of the deprecated object.
+
+    Usage:
+
+        @deprecated("Use B instead")
+        class A:
+            pass
+
+        @deprecated("Use g instead")
+        def f():
+            pass
+
+        @overload
+        @deprecated("int support is deprecated")
+        def g(x: int) -> int: ...
+        @overload
+        def g(x: str) -> int: ...
+
+    The warning specified by *category* will be emitted at runtime
+    on use of deprecated objects. For functions, that happens on calls;
+    for classes, on instantiation and on creation of subclasses.
+    If the *category* is ``None``, no warning is emitted at runtime.
+    The *stacklevel* determines where the
+    warning is emitted. If it is ``1`` (the default), the warning
+    is emitted at the direct caller of the deprecated object; if it
+    is higher, it is emitted further up the stack.
+    Static type checker behavior is not affected by the *category*
+    and *stacklevel* arguments.
+
+    The deprecation message passed to the decorator is saved in the
+    ``__deprecated__`` attribute on the decorated object.
+    If applied to an overload, the decorator
+    must be after the ``@overload`` decorator for the attribute to
+    exist on the overload as returned by ``get_overloads()``.
+
+    See PEP 702 for details.
+
+    """
+    def __init__(
+        self,
+        message: str,
+        /,
+        *,
+        category: type[Warning] | None = DeprecationWarning,
+        stacklevel: int = 1,
+    ) -> None:
+        if not isinstance(message, str):
+            raise TypeError(
+                f"Expected an object of type str for 'message', not {type(message).__name__!r}"
+            )
+        self.message = message
+        self.category = category
+        self.stacklevel = stacklevel
+
+    def __call__(self, arg, /):
+        # Make sure the inner functions created below don't
+        # retain a reference to self.
+        msg = self.message
+        category = self.category
+        stacklevel = self.stacklevel
+        if category is None:
+            arg.__deprecated__ = msg
+            return arg
+        elif isinstance(arg, type):
+            import functools
+            from types import MethodType
+
+            original_new = arg.__new__
+
+            @functools.wraps(original_new)
+            def __new__(cls, *args, **kwargs):
+                if cls is arg:
+                    warn(msg, category=category, stacklevel=stacklevel + 1)
+                if original_new is not object.__new__:
+                    return original_new(cls, *args, **kwargs)
+                # Mirrors a similar check in object.__new__.
+                elif cls.__init__ is object.__init__ and (args or kwargs):
+                    raise TypeError(f"{cls.__name__}() takes no arguments")
+                else:
+                    return original_new(cls)
+
+            arg.__new__ = staticmethod(__new__)
+
+            original_init_subclass = arg.__init_subclass__
+            # We need slightly different behavior if __init_subclass__
+            # is a bound method (likely if it was implemented in Python)
+            if isinstance(original_init_subclass, MethodType):
+                original_init_subclass = original_init_subclass.__func__
+
+                @functools.wraps(original_init_subclass)
+                def __init_subclass__(*args, **kwargs):
+                    warn(msg, category=category, stacklevel=stacklevel + 1)
+                    return original_init_subclass(*args, **kwargs)
+
+                arg.__init_subclass__ = classmethod(__init_subclass__)
+            # Or otherwise, which likely means it's a builtin such as
+            # object's implementation of __init_subclass__.
+            else:
+                @functools.wraps(original_init_subclass)
+                def __init_subclass__(*args, **kwargs):
+                    warn(msg, category=category, stacklevel=stacklevel + 1)
+                    return original_init_subclass(*args, **kwargs)
+
+                arg.__init_subclass__ = __init_subclass__
+
+            arg.__deprecated__ = __new__.__deprecated__ = msg
+            __init_subclass__.__deprecated__ = msg
+            return arg
+        elif callable(arg):
+            import functools
+
+            @functools.wraps(arg)
+            def wrapper(*args, **kwargs):
+                warn(msg, category=category, stacklevel=stacklevel + 1)
+                return arg(*args, **kwargs)
+
+            arg.__deprecated__ = wrapper.__deprecated__ = msg
+            return wrapper
+        else:
+            raise TypeError(
+                "@deprecated decorator with non-None category must be applied to "
+                f"a class or callable, not {arg!r}"
+            )
+
+
 _DEPRECATED_MSG = "{name!r} is deprecated and slated for removal in Python {remove}"
 
 def _deprecated(name, message=_DEPRECATED_MSG, *, remove, _version=sys.version_info):
@@ -517,7 +652,7 @@ def _deprecated(name, message=_DEPRECATED_MSG, *, remove, _version=sys.version_i
     the current Python version or the same version but past the alpha.
 
     The *message* argument is formatted with *name* and *remove* as a Python
-    version (e.g. "3.11").
+    version tuple (e.g. (3, 11)).
 
     """
     remove_formatted = f"{remove[0]}.{remove[1]}"
diff --git a/Lib/wave.py b/Lib/wave.py
index d5858e5d4b80da..a34af244c3e224 100644
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -21,9 +21,9 @@
       getparams()     -- returns a namedtuple consisting of all of the
                          above in the above order
       getmarkers()    -- returns None (for compatibility with the
-                         aifc module)
+                         old aifc module)
       getmark(id)     -- raises an error since the mark does not
-                         exist (for compatibility with the aifc module)
+                         exist (for compatibility with the old aifc module)
       readframes(n)   -- returns at most n frames of audio
       rewind()        -- rewind to the beginning of the audio stream
       setpos(pos)     -- seek to the specified position
@@ -92,6 +92,7 @@ class Error(Exception):
 _wave_params = namedtuple('_wave_params',
                      'nchannels sampwidth framerate nframes comptype compname')
 
+
 def _byteswap(data, width):
     swapped_data = bytearray(len(data))
 
@@ -104,7 +105,6 @@ def _byteswap(data, width):
 
 class _Chunk:
     def __init__(self, file, align=True, bigendian=True, inclheader=False):
-        import struct
         self.closed = False
         self.align = align      # whether to align to word (2-byte) boundaries
         if bigendian:
@@ -214,7 +214,6 @@ def skip(self):
                 raise EOFError
 
 
-
 class Wave_read:
     """Variables used in this class:
 
@@ -343,9 +342,13 @@ def getparams(self):
                        self.getcomptype(), self.getcompname())
 
     def getmarkers(self):
+        import warnings
+        warnings._deprecated("Wave_read.getmarkers", remove=(3, 15))
         return None
 
     def getmark(self, id):
+        import warnings
+        warnings._deprecated("Wave_read.getmark", remove=(3, 15))
         raise Error('no marks')
 
     def setpos(self, pos):
@@ -411,6 +414,7 @@ def _read_fmt_chunk(self, chunk):
         self._comptype = 'NONE'
         self._compname = 'not compressed'
 
+
 class Wave_write:
     """Variables used in this class:
 
@@ -548,12 +552,18 @@ def getparams(self):
               self._nframes, self._comptype, self._compname)
 
     def setmark(self, id, pos, name):
+        import warnings
+        warnings._deprecated("Wave_write.setmark", remove=(3, 15))
         raise Error('setmark() not supported')
 
     def getmark(self, id):
+        import warnings
+        warnings._deprecated("Wave_write.getmark", remove=(3, 15))
         raise Error('no marks')
 
     def getmarkers(self):
+        import warnings
+        warnings._deprecated("Wave_write.getmarkers", remove=(3, 15))
         return None
 
     def tell(self):
@@ -638,6 +648,7 @@ def _patchheader(self):
         self._file.seek(curpos, 0)
         self._datalength = self._datawritten
 
+
 def open(f, mode=None):
     if mode is None:
         if hasattr(f, 'mode'):
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index b86d131f030d80..8b0628745c57fc 100755
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -8,7 +8,6 @@
 import sys
 import subprocess
 import threading
-import warnings
 
 __all__ = ["Error", "open", "open_new", "open_new_tab", "get", "register"]
 
@@ -391,15 +390,6 @@ def open(self, url, new=0, autoraise=True):
             return (p.poll() is None)
 
 
-    def open(self, url, new=0, autoraise=True):
-        sys.audit("webbrowser.open", url)
-        if new:
-            ok = self._remote("LOADNEW " + url)
-        else:
-            ok = self._remote("LOAD " + url)
-        return ok
-
-
 class Edge(UnixBrowser):
     "Launcher class for Microsoft Edge browser."
 
@@ -570,78 +560,14 @@ def open(self, url, new=0, autoraise=True):
                 return True
 
 #
-# Platform support for MacOS
+# Platform support for macOS
 #
 
 if sys.platform == 'darwin':
-    # Adapted from patch submitted to SourceForge by Steven J. Burr
-    class MacOSX(BaseBrowser):
-        """Launcher class for Aqua browsers on Mac OS X
-
-        Optionally specify a browser name on instantiation.  Note that this
-        will not work for Aqua browsers if the user has moved the application
-        package after installation.
-
-        If no browser is specified, the default browser, as specified in the
-        Internet System Preferences panel, will be used.
-        """
-        def __init__(self, name):
-            warnings.warn(f'{self.__class__.__name__} is deprecated in 3.11'
-                          ' use MacOSXOSAScript instead.', DeprecationWarning, stacklevel=2)
-            self.name = name
-
-        def open(self, url, new=0, autoraise=True):
-            sys.audit("webbrowser.open", url)
-            assert "'" not in url
-            # hack for local urls
-            if not ':' in url:
-                url = 'file:'+url
-
-            # new must be 0 or 1
-            new = int(bool(new))
-            if self.name == "default":
-                # User called open, open_new or get without a browser parameter
-                script = 'open location "%s"' % url.replace('"', '%22') # opens in default browser
-            else:
-                # User called get and chose a browser
-                if self.name == "OmniWeb":
-                    toWindow = ""
-                else:
-                    # Include toWindow parameter of OpenURL command for browsers
-                    # that support it.  0 == new window; -1 == existing
-                    toWindow = "toWindow %d" % (new - 1)
-                cmd = 'OpenURL "%s"' % url.replace('"', '%22')
-                script = '''tell application "%s"
-                                activate
-                                %s %s
-                            end tell''' % (self.name, cmd, toWindow)
-            # Open pipe to AppleScript through osascript command
-            osapipe = os.popen("osascript", "w")
-            if osapipe is None:
-                return False
-            # Write script to osascript's stdin
-            osapipe.write(script)
-            rc = osapipe.close()
-            return not rc
-
     class MacOSXOSAScript(BaseBrowser):
         def __init__(self, name='default'):
             super().__init__(name)
 
-        @property
-        def _name(self):
-            warnings.warn(f'{self.__class__.__name__}._name is deprecated in 3.11'
-                          f' use {self.__class__.__name__}.name instead.',
-                          DeprecationWarning, stacklevel=2)
-            return self.name
-
-        @_name.setter
-        def _name(self, val):
-            warnings.warn(f'{self.__class__.__name__}._name is deprecated in 3.11'
-                          f' use {self.__class__.__name__}.name instead.',
-                          DeprecationWarning, stacklevel=2)
-            self.name = val
-
         def open(self, url, new=0, autoraise=True):
             if self.name == 'default':
                 script = 'open location "%s"' % url.replace('"', '%22') # opens in default browser
diff --git a/Lib/wsgiref/simple_server.py b/Lib/wsgiref/simple_server.py
index 93d01a863adf59..a0f2397fcf0006 100644
--- a/Lib/wsgiref/simple_server.py
+++ b/Lib/wsgiref/simple_server.py
@@ -84,10 +84,6 @@ def get_environ(self):
 
         env['PATH_INFO'] = urllib.parse.unquote(path, 'iso-8859-1')
         env['QUERY_STRING'] = query
-
-        host = self.address_string()
-        if host != self.client_address[0]:
-            env['REMOTE_HOST'] = host
         env['REMOTE_ADDR'] = self.client_address[0]
 
         if self.headers.get('content-type') is None:
diff --git a/Lib/wsgiref/util.py b/Lib/wsgiref/util.py
index cbbe094cba1624..63b923317373f5 100644
--- a/Lib/wsgiref/util.py
+++ b/Lib/wsgiref/util.py
@@ -4,7 +4,7 @@
 
 __all__ = [
     'FileWrapper', 'guess_scheme', 'application_uri', 'request_uri',
-    'shift_path_info', 'setup_testing_defaults',
+    'shift_path_info', 'setup_testing_defaults', 'is_hop_by_hop',
 ]
 
 
diff --git a/Lib/xdrlib.py b/Lib/xdrlib.py
deleted file mode 100644
index f8c2c18228da4d..00000000000000
--- a/Lib/xdrlib.py
+++ /dev/null
@@ -1,242 +0,0 @@
-"""Implements (a subset of) Sun XDR -- eXternal Data Representation.
-
-See: RFC 1014
-
-"""
-
-import struct
-from io import BytesIO
-from functools import wraps
-import warnings
-
-warnings._deprecated(__name__, remove=(3, 13))
-
-__all__ = ["Error", "Packer", "Unpacker", "ConversionError"]
-
-# exceptions
-class Error(Exception):
-    """Exception class for this module. Use:
-
-    except xdrlib.Error as var:
-        # var has the Error instance for the exception
-
-    Public ivars:
-        msg -- contains the message
-
-    """
-    def __init__(self, msg):
-        self.msg = msg
-    def __repr__(self):
-        return repr(self.msg)
-    def __str__(self):
-        return str(self.msg)
-
-
-class ConversionError(Error):
-    pass
-
-def raise_conversion_error(function):
-    """ Wrap any raised struct.errors in a ConversionError. """
-
-    @wraps(function)
-    def result(self, value):
-        try:
-            return function(self, value)
-        except struct.error as e:
-            raise ConversionError(e.args[0]) from None
-    return result
-
-
-class Packer:
-    """Pack various data representations into a buffer."""
-
-    def __init__(self):
-        self.reset()
-
-    def reset(self):
-        self.__buf = BytesIO()
-
-    def get_buffer(self):
-        return self.__buf.getvalue()
-    # backwards compatibility
-    get_buf = get_buffer
-
-    @raise_conversion_error
-    def pack_uint(self, x):
-        self.__buf.write(struct.pack('>L', x))
-
-    @raise_conversion_error
-    def pack_int(self, x):
-        self.__buf.write(struct.pack('>l', x))
-
-    pack_enum = pack_int
-
-    def pack_bool(self, x):
-        if x: self.__buf.write(b'\0\0\0\1')
-        else: self.__buf.write(b'\0\0\0\0')
-
-    def pack_uhyper(self, x):
-        try:
-            self.pack_uint(x>>32 & 0xffffffff)
-        except (TypeError, struct.error) as e:
-            raise ConversionError(e.args[0]) from None
-        try:
-            self.pack_uint(x & 0xffffffff)
-        except (TypeError, struct.error) as e:
-            raise ConversionError(e.args[0]) from None
-
-    pack_hyper = pack_uhyper
-
-    @raise_conversion_error
-    def pack_float(self, x):
-        self.__buf.write(struct.pack('>f', x))
-
-    @raise_conversion_error
-    def pack_double(self, x):
-        self.__buf.write(struct.pack('>d', x))
-
-    def pack_fstring(self, n, s):
-        if n < 0:
-            raise ValueError('fstring size must be nonnegative')
-        data = s[:n]
-        n = ((n+3)//4)*4
-        data = data + (n - len(data)) * b'\0'
-        self.__buf.write(data)
-
-    pack_fopaque = pack_fstring
-
-    def pack_string(self, s):
-        n = len(s)
-        self.pack_uint(n)
-        self.pack_fstring(n, s)
-
-    pack_opaque = pack_string
-    pack_bytes = pack_string
-
-    def pack_list(self, list, pack_item):
-        for item in list:
-            self.pack_uint(1)
-            pack_item(item)
-        self.pack_uint(0)
-
-    def pack_farray(self, n, list, pack_item):
-        if len(list) != n:
-            raise ValueError('wrong array size')
-        for item in list:
-            pack_item(item)
-
-    def pack_array(self, list, pack_item):
-        n = len(list)
-        self.pack_uint(n)
-        self.pack_farray(n, list, pack_item)
-
-
-
-class Unpacker:
-    """Unpacks various data representations from the given buffer."""
-
-    def __init__(self, data):
-        self.reset(data)
-
-    def reset(self, data):
-        self.__buf = data
-        self.__pos = 0
-
-    def get_position(self):
-        return self.__pos
-
-    def set_position(self, position):
-        self.__pos = position
-
-    def get_buffer(self):
-        return self.__buf
-
-    def done(self):
-        if self.__pos < len(self.__buf):
-            raise Error('unextracted data remains')
-
-    def unpack_uint(self):
-        i = self.__pos
-        self.__pos = j = i+4
-        data = self.__buf[i:j]
-        if len(data) < 4:
-            raise EOFError
-        return struct.unpack('>L', data)[0]
-
-    def unpack_int(self):
-        i = self.__pos
-        self.__pos = j = i+4
-        data = self.__buf[i:j]
-        if len(data) < 4:
-            raise EOFError
-        return struct.unpack('>l', data)[0]
-
-    unpack_enum = unpack_int
-
-    def unpack_bool(self):
-        return bool(self.unpack_int())
-
-    def unpack_uhyper(self):
-        hi = self.unpack_uint()
-        lo = self.unpack_uint()
-        return int(hi)<<32 | lo
-
-    def unpack_hyper(self):
-        x = self.unpack_uhyper()
-        if x >= 0x8000000000000000:
-            x = x - 0x10000000000000000
-        return x
-
-    def unpack_float(self):
-        i = self.__pos
-        self.__pos = j = i+4
-        data = self.__buf[i:j]
-        if len(data) < 4:
-            raise EOFError
-        return struct.unpack('>f', data)[0]
-
-    def unpack_double(self):
-        i = self.__pos
-        self.__pos = j = i+8
-        data = self.__buf[i:j]
-        if len(data) < 8:
-            raise EOFError
-        return struct.unpack('>d', data)[0]
-
-    def unpack_fstring(self, n):
-        if n < 0:
-            raise ValueError('fstring size must be nonnegative')
-        i = self.__pos
-        j = i + (n+3)//4*4
-        if j > len(self.__buf):
-            raise EOFError
-        self.__pos = j
-        return self.__buf[i:i+n]
-
-    unpack_fopaque = unpack_fstring
-
-    def unpack_string(self):
-        n = self.unpack_uint()
-        return self.unpack_fstring(n)
-
-    unpack_opaque = unpack_string
-    unpack_bytes = unpack_string
-
-    def unpack_list(self, unpack_item):
-        list = []
-        while (x := self.unpack_uint()) != 0:
-            if x != 1:
-                raise ConversionError('0 or 1 expected, got %r' % (x,))
-            item = unpack_item()
-            list.append(item)
-        return list
-
-    def unpack_farray(self, n, unpack_item):
-        list = []
-        for i in range(n):
-            list.append(unpack_item())
-        return list
-
-    def unpack_array(self, unpack_item):
-        n = self.unpack_uint()
-        return self.unpack_farray(n, unpack_item)
diff --git a/Lib/xml/dom/minidom.py b/Lib/xml/dom/minidom.py
index ef8a159833bbc0..db51f350ea0153 100644
--- a/Lib/xml/dom/minidom.py
+++ b/Lib/xml/dom/minidom.py
@@ -300,12 +300,28 @@ def _in_document(node):
         node = node.parentNode
     return False
 
-def _write_data(writer, data):
+def _write_data(writer, text, attr):
     "Writes datachars to writer."
-    if data:
-        data = data.replace("&", "&amp;").replace("<", "&lt;"). \
-                    replace("\"", "&quot;").replace(">", "&gt;")
-        writer.write(data)
+    if not text:
+        return
+    # See the comments in ElementTree.py for behavior and
+    # implementation details.
+    if "&" in text:
+        text = text.replace("&", "&amp;")
+    if "<" in text:
+        text = text.replace("<", "&lt;")
+    if ">" in text:
+        text = text.replace(">", "&gt;")
+    if attr:
+        if '"' in text:
+            text = text.replace('"', "&quot;")
+        if "\r" in text:
+            text = text.replace("\r", "&#13;")
+        if "\n" in text:
+            text = text.replace("\n", "&#10;")
+        if "\t" in text:
+            text = text.replace("\t", "&#9;")
+    writer.write(text)
 
 def _get_elements_by_tagName_helper(parent, name, rc):
     for node in parent.childNodes:
@@ -883,7 +899,7 @@ def writexml(self, writer, indent="", addindent="", newl=""):
 
         for a_name in attrs.keys():
             writer.write(" %s=\"" % a_name)
-            _write_data(writer, attrs[a_name].value)
+            _write_data(writer, attrs[a_name].value, True)
             writer.write("\"")
         if self.childNodes:
             writer.write(">")
@@ -1112,7 +1128,7 @@ def splitText(self, offset):
         return newText
 
     def writexml(self, writer, indent="", addindent="", newl=""):
-        _write_data(writer, "%s%s%s" % (indent, self.data, newl))
+        _write_data(writer, "%s%s%s" % (indent, self.data, newl), False)
 
     # DOM Level 3 (WD 9 April 2002)
 
diff --git a/Lib/xmlrpc/client.py b/Lib/xmlrpc/client.py
index ea8da766cb5a7e..f441376d09c4aa 100644
--- a/Lib/xmlrpc/client.py
+++ b/Lib/xmlrpc/client.py
@@ -245,41 +245,15 @@ def __repr__(self):
 
 ##
 # Backwards compatibility
-
 boolean = Boolean = bool
 
-##
-# Wrapper for XML-RPC DateTime values.  This converts a time value to
-# the format used by XML-RPC.
-# <p>
-# The value can be given as a datetime object, as a string in the
-# format "yyyymmddThh:mm:ss", as a 9-item time tuple (as returned by
-# time.localtime()), or an integer value (as returned by time.time()).
-# The wrapper uses time.localtime() to convert an integer to a time
-# tuple.
-#
-# @param value The time, given as a datetime object, an ISO 8601 string,
-#              a time tuple, or an integer time value.
-
 
-# Issue #13305: different format codes across platforms
-_day0 = datetime(1, 1, 1)
-def _try(fmt):
-    try:
-        return _day0.strftime(fmt) == '0001'
-    except ValueError:
-        return False
-if _try('%Y'):      # Mac OS X
-    def _iso8601_format(value):
-        return value.strftime("%Y%m%dT%H:%M:%S")
-elif _try('%4Y'):   # Linux
-    def _iso8601_format(value):
-        return value.strftime("%4Y%m%dT%H:%M:%S")
-else:
-    def _iso8601_format(value):
-        return value.strftime("%Y%m%dT%H:%M:%S").zfill(17)
-del _day0
-del _try
+def _iso8601_format(value):
+    if value.tzinfo is not None:
+        # XML-RPC only uses the naive portion of the datetime
+        value = value.replace(tzinfo=None)
+    # XML-RPC doesn't use '-' separator in the date part
+    return value.isoformat(timespec='seconds').replace('-', '')
 
 
 def _strftime(value):
diff --git a/Lib/zipapp.py b/Lib/zipapp.py
index d8ebfcb6c73b0c..03a214efa10a20 100644
--- a/Lib/zipapp.py
+++ b/Lib/zipapp.py
@@ -138,7 +138,7 @@ def create_archive(source, target=None, interpreter=None, main=None,
         with zipfile.ZipFile(fd, 'w', compression=compression) as z:
             for child in sorted(source.rglob('*')):
                 arcname = child.relative_to(source)
-                if filter is None or filter(arcname):
+                if filter is None or filter(arcname) and child.resolve() != arcname.resolve():
                     z.write(child, arcname.as_posix())
             if main_py:
                 z.writestr('__main__.py', main_py.encode('utf-8'))
diff --git a/Lib/zipfile/__init__.py b/Lib/zipfile/__init__.py
index 116b939e55fe70..fe629ed1cf2fc5 100644
--- a/Lib/zipfile/__init__.py
+++ b/Lib/zipfile/__init__.py
@@ -188,28 +188,42 @@ class LargeZipFile(Exception):
 
 _DD_SIGNATURE = 0x08074b50
 
-_EXTRA_FIELD_STRUCT = struct.Struct('<HH')
-
-def _strip_extra(extra, xids):
-    # Remove Extra Fields with specified IDs.
-    unpack = _EXTRA_FIELD_STRUCT.unpack
-    modified = False
-    buffer = []
-    start = i = 0
-    while i + 4 <= len(extra):
-        xid, xlen = unpack(extra[i : i + 4])
-        j = i + 4 + xlen
-        if xid in xids:
-            if i != start:
-                buffer.append(extra[start : i])
-            start = j
-            modified = True
-        i = j
-    if not modified:
-        return extra
-    if start != len(extra):
-        buffer.append(extra[start:])
-    return b''.join(buffer)
+
+class _Extra(bytes):
+    FIELD_STRUCT = struct.Struct('<HH')
+
+    def __new__(cls, val, id=None):
+        return super().__new__(cls, val)
+
+    def __init__(self, val, id=None):
+        self.id = id
+
+    @classmethod
+    def read_one(cls, raw):
+        try:
+            xid, xlen = cls.FIELD_STRUCT.unpack(raw[:4])
+        except struct.error:
+            xid = None
+            xlen = 0
+        return cls(raw[:4+xlen], xid), raw[4+xlen:]
+
+    @classmethod
+    def split(cls, data):
+        # use memoryview for zero-copy slices
+        rest = memoryview(data)
+        while rest:
+            extra, rest = _Extra.read_one(rest)
+            yield extra
+
+    @classmethod
+    def strip(cls, data, xids):
+        """Remove Extra fields with specified IDs."""
+        return b''.join(
+            ex
+            for ex in cls.split(data)
+            if ex.id not in xids
+        )
+
 
 def _check_zipfile(fp):
     try:
@@ -442,7 +456,12 @@ def __repr__(self):
         return ''.join(result)
 
     def FileHeader(self, zip64=None):
-        """Return the per-file header as a bytes object."""
+        """Return the per-file header as a bytes object.
+
+        When the optional zip64 arg is None rather than a bool, we will
+        decide based upon the file_size and compress_size, if known,
+        False otherwise.
+        """
         dt = self.date_time
         dosdate = (dt[0] - 1980) << 9 | dt[1] << 5 | dt[2]
         dostime = dt[3] << 11 | dt[4] << 5 | (dt[5] // 2)
@@ -458,16 +477,13 @@ def FileHeader(self, zip64=None):
 
         min_version = 0
         if zip64 is None:
+            # We always explicitly pass zip64 within this module.... This
+            # remains for anyone using ZipInfo.FileHeader as a public API.
             zip64 = file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT
         if zip64:
             fmt = '<HHQQ'
             extra = extra + struct.pack(fmt,
                                         1, struct.calcsize(fmt)-4, file_size, compress_size)
-        if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
-            if not zip64:
-                raise LargeZipFile("Filesize would require ZIP64 extensions")
-            # File is larger than what fits into a 4 byte integer,
-            # fall back to the ZIP64 extension
             file_size = 0xffffffff
             compress_size = 0xffffffff
             min_version = ZIP64_VERSION
@@ -529,6 +545,7 @@ def _decodeExtra(self, filename_crc):
                         if up_unicode_name:
                             self.filename = _sanitize_filename(up_unicode_name)
                         else:
+                            import warnings
                             warnings.warn("Empty unicode path extra field (0x7075)", stacklevel=2)
                 except struct.error as e:
                     raise BadZipFile("Corrupt unicode path extra field (0x7075)") from e
@@ -1119,8 +1136,12 @@ def seek(self, offset, whence=os.SEEK_SET):
         read_offset = new_pos - curr_pos
         buff_offset = read_offset + self._offset
 
+        if buff_offset >= 0 and buff_offset < len(self._readbuffer):
+            # Just move the _offset index if the new position is in the _readbuffer
+            self._offset = buff_offset
+            read_offset = 0
         # Fast seek uncompressed unencrypted file
-        if self._compress_type == ZIP_STORED and self._decrypter is None and read_offset > 0:
+        elif self._compress_type == ZIP_STORED and self._decrypter is None and read_offset > 0:
             # disable CRC checking after first seeking - it would be invalid
             self._expected_crc = None
             # seek actual file taking already buffered data into account
@@ -1131,10 +1152,6 @@ def seek(self, offset, whence=os.SEEK_SET):
             # flush read buffer
             self._readbuffer = b''
             self._offset = 0
-        elif buff_offset >= 0 and buff_offset < len(self._readbuffer):
-            # Just move the _offset index if the new position is in the _readbuffer
-            self._offset = buff_offset
-            read_offset = 0
         elif read_offset < 0:
             # Position is before the current position. Reset the ZipExtFile
             self._fileobj.seek(self._orig_compress_start)
@@ -1219,6 +1236,12 @@ def close(self):
             self._zinfo.CRC = self._crc
             self._zinfo.file_size = self._file_size
 
+            if not self._zip64:
+                if self._file_size > ZIP64_LIMIT:
+                    raise RuntimeError("File size too large, try using force_zip64")
+                if self._compress_size > ZIP64_LIMIT:
+                    raise RuntimeError("Compressed size too large, try using force_zip64")
+
             # Write updated header info
             if self._zinfo.flag_bits & _MASK_USE_DATA_DESCRIPTOR:
                 # Write CRC and file sizes after the file data
@@ -1227,13 +1250,6 @@ def close(self):
                     self._zinfo.compress_size, self._zinfo.file_size))
                 self._zipfile.start_dir = self._fileobj.tell()
             else:
-                if not self._zip64:
-                    if self._file_size > ZIP64_LIMIT:
-                        raise RuntimeError(
-                            'File size too large, try using force_zip64')
-                    if self._compress_size > ZIP64_LIMIT:
-                        raise RuntimeError(
-                            'Compressed size too large, try using force_zip64')
                 # Seek backwards and write file header (which will now include
                 # correct CRC and file sizes)
 
@@ -1672,8 +1688,9 @@ def _open_to_write(self, zinfo, force_zip64=False):
             zinfo.external_attr = 0o600 << 16  # permissions: ?rw-------
 
         # Compressed size can be larger than uncompressed size
-        zip64 = self._allowZip64 and \
-                (force_zip64 or zinfo.file_size * 1.05 > ZIP64_LIMIT)
+        zip64 = force_zip64 or (zinfo.file_size * 1.05 > ZIP64_LIMIT)
+        if not self._allowZip64 and zip64:
+            raise LargeZipFile("Filesize would require ZIP64 extensions")
 
         if self._seekable:
             self.fp.seek(self.start_dir)
@@ -1961,7 +1978,7 @@ def _write_end_record(self):
             min_version = 0
             if extra:
                 # Append a ZIP64 field to the extra's
-                extra_data = _strip_extra(extra_data, (1,))
+                extra_data = _Extra.strip(extra_data, (1,))
                 extra_data = struct.pack(
                     '<HH' + 'Q'*len(extra),
                     1, 8*len(extra), *extra) + extra_data
@@ -2210,12 +2227,79 @@ def _compile(file, optimize=-1):
         return (fname, archivename)
 
 
+def main(args=None):
+    import argparse
+
+    description = 'A simple command-line interface for zipfile module.'
+    parser = argparse.ArgumentParser(description=description)
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument('-l', '--list', metavar='<zipfile>',
+                       help='Show listing of a zipfile')
+    group.add_argument('-e', '--extract', nargs=2,
+                       metavar=('<zipfile>', '<output_dir>'),
+                       help='Extract zipfile into target dir')
+    group.add_argument('-c', '--create', nargs='+',
+                       metavar=('<name>', '<file>'),
+                       help='Create zipfile from sources')
+    group.add_argument('-t', '--test', metavar='<zipfile>',
+                       help='Test if a zipfile is valid')
+    parser.add_argument('--metadata-encoding', metavar='<encoding>',
+                        help='Specify encoding of member names for -l, -e and -t')
+    args = parser.parse_args(args)
+
+    encoding = args.metadata_encoding
+
+    if args.test is not None:
+        src = args.test
+        with ZipFile(src, 'r', metadata_encoding=encoding) as zf:
+            badfile = zf.testzip()
+        if badfile:
+            print("The following enclosed file is corrupted: {!r}".format(badfile))
+        print("Done testing")
+
+    elif args.list is not None:
+        src = args.list
+        with ZipFile(src, 'r', metadata_encoding=encoding) as zf:
+            zf.printdir()
+
+    elif args.extract is not None:
+        src, curdir = args.extract
+        with ZipFile(src, 'r', metadata_encoding=encoding) as zf:
+            zf.extractall(curdir)
+
+    elif args.create is not None:
+        if encoding:
+            print("Non-conforming encodings not supported with -c.",
+                  file=sys.stderr)
+            sys.exit(1)
+
+        zip_name = args.create.pop(0)
+        files = args.create
+
+        def addToZip(zf, path, zippath):
+            if os.path.isfile(path):
+                zf.write(path, zippath, ZIP_DEFLATED)
+            elif os.path.isdir(path):
+                if zippath:
+                    zf.write(path, zippath)
+                for nm in sorted(os.listdir(path)):
+                    addToZip(zf,
+                             os.path.join(path, nm), os.path.join(zippath, nm))
+            # else: ignore
+
+        with ZipFile(zip_name, 'w') as zf:
+            for path in files:
+                zippath = os.path.basename(path)
+                if not zippath:
+                    zippath = os.path.basename(os.path.dirname(path))
+                if zippath in ('', os.curdir, os.pardir):
+                    zippath = ''
+                addToZip(zf, path, zippath)
+
+
 from ._path import (  # noqa: E402
     Path,
 
     # used privately for tests
     CompleteDirs,  # noqa: F401
 )
-
-# used privately for tests
-from .__main__ import main  # noqa: F401, E402
diff --git a/Lib/zipfile/__main__.py b/Lib/zipfile/__main__.py
index a9e5fb1b8d72c4..868d99efc3c4a3 100644
--- a/Lib/zipfile/__main__.py
+++ b/Lib/zipfile/__main__.py
@@ -1,77 +1,4 @@
-import sys
-import os
-from . import ZipFile, ZIP_DEFLATED
-
-
-def main(args=None):
-    import argparse
-
-    description = 'A simple command-line interface for zipfile module.'
-    parser = argparse.ArgumentParser(description=description)
-    group = parser.add_mutually_exclusive_group(required=True)
-    group.add_argument('-l', '--list', metavar='<zipfile>',
-                       help='Show listing of a zipfile')
-    group.add_argument('-e', '--extract', nargs=2,
-                       metavar=('<zipfile>', '<output_dir>'),
-                       help='Extract zipfile into target dir')
-    group.add_argument('-c', '--create', nargs='+',
-                       metavar=('<name>', '<file>'),
-                       help='Create zipfile from sources')
-    group.add_argument('-t', '--test', metavar='<zipfile>',
-                       help='Test if a zipfile is valid')
-    parser.add_argument('--metadata-encoding', metavar='<encoding>',
-                        help='Specify encoding of member names for -l, -e and -t')
-    args = parser.parse_args(args)
-
-    encoding = args.metadata_encoding
-
-    if args.test is not None:
-        src = args.test
-        with ZipFile(src, 'r', metadata_encoding=encoding) as zf:
-            badfile = zf.testzip()
-        if badfile:
-            print("The following enclosed file is corrupted: {!r}".format(badfile))
-        print("Done testing")
-
-    elif args.list is not None:
-        src = args.list
-        with ZipFile(src, 'r', metadata_encoding=encoding) as zf:
-            zf.printdir()
-
-    elif args.extract is not None:
-        src, curdir = args.extract
-        with ZipFile(src, 'r', metadata_encoding=encoding) as zf:
-            zf.extractall(curdir)
-
-    elif args.create is not None:
-        if encoding:
-            print("Non-conforming encodings not supported with -c.",
-                  file=sys.stderr)
-            sys.exit(1)
-
-        zip_name = args.create.pop(0)
-        files = args.create
-
-        def addToZip(zf, path, zippath):
-            if os.path.isfile(path):
-                zf.write(path, zippath, ZIP_DEFLATED)
-            elif os.path.isdir(path):
-                if zippath:
-                    zf.write(path, zippath)
-                for nm in sorted(os.listdir(path)):
-                    addToZip(zf,
-                             os.path.join(path, nm), os.path.join(zippath, nm))
-            # else: ignore
-
-        with ZipFile(zip_name, 'w') as zf:
-            for path in files:
-                zippath = os.path.basename(path)
-                if not zippath:
-                    zippath = os.path.basename(os.path.dirname(path))
-                if zippath in ('', os.curdir, os.pardir):
-                    zippath = ''
-                addToZip(zf, path, zippath)
-
+from . import main
 
 if __name__ == "__main__":
     main()
diff --git a/Lib/zipfile/_path.py b/Lib/zipfile/_path.py
deleted file mode 100644
index fd49a3ea91db59..00000000000000
--- a/Lib/zipfile/_path.py
+++ /dev/null
@@ -1,400 +0,0 @@
-import io
-import posixpath
-import zipfile
-import itertools
-import contextlib
-import pathlib
-import re
-import fnmatch
-
-
-__all__ = ['Path']
-
-
-def _parents(path):
-    """
-    Given a path with elements separated by
-    posixpath.sep, generate all parents of that path.
-
-    >>> list(_parents('b/d'))
-    ['b']
-    >>> list(_parents('/b/d/'))
-    ['/b']
-    >>> list(_parents('b/d/f/'))
-    ['b/d', 'b']
-    >>> list(_parents('b'))
-    []
-    >>> list(_parents(''))
-    []
-    """
-    return itertools.islice(_ancestry(path), 1, None)
-
-
-def _ancestry(path):
-    """
-    Given a path with elements separated by
-    posixpath.sep, generate all elements of that path
-
-    >>> list(_ancestry('b/d'))
-    ['b/d', 'b']
-    >>> list(_ancestry('/b/d/'))
-    ['/b/d', '/b']
-    >>> list(_ancestry('b/d/f/'))
-    ['b/d/f', 'b/d', 'b']
-    >>> list(_ancestry('b'))
-    ['b']
-    >>> list(_ancestry(''))
-    []
-    """
-    path = path.rstrip(posixpath.sep)
-    while path and path != posixpath.sep:
-        yield path
-        path, tail = posixpath.split(path)
-
-
-_dedupe = dict.fromkeys
-"""Deduplicate an iterable in original order"""
-
-
-def _difference(minuend, subtrahend):
-    """
-    Return items in minuend not in subtrahend, retaining order
-    with O(1) lookup.
-    """
-    return itertools.filterfalse(set(subtrahend).__contains__, minuend)
-
-
-class InitializedState:
-    """
-    Mix-in to save the initialization state for pickling.
-    """
-
-    def __init__(self, *args, **kwargs):
-        self.__args = args
-        self.__kwargs = kwargs
-        super().__init__(*args, **kwargs)
-
-    def __getstate__(self):
-        return self.__args, self.__kwargs
-
-    def __setstate__(self, state):
-        args, kwargs = state
-        super().__init__(*args, **kwargs)
-
-
-class CompleteDirs(InitializedState, zipfile.ZipFile):
-    """
-    A ZipFile subclass that ensures that implied directories
-    are always included in the namelist.
-
-    >>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt']))
-    ['foo/', 'foo/bar/']
-    >>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt', 'foo/bar/']))
-    ['foo/']
-    """
-
-    @staticmethod
-    def _implied_dirs(names):
-        parents = itertools.chain.from_iterable(map(_parents, names))
-        as_dirs = (p + posixpath.sep for p in parents)
-        return _dedupe(_difference(as_dirs, names))
-
-    def namelist(self):
-        names = super().namelist()
-        return names + list(self._implied_dirs(names))
-
-    def _name_set(self):
-        return set(self.namelist())
-
-    def resolve_dir(self, name):
-        """
-        If the name represents a directory, return that name
-        as a directory (with the trailing slash).
-        """
-        names = self._name_set()
-        dirname = name + '/'
-        dir_match = name not in names and dirname in names
-        return dirname if dir_match else name
-
-    def getinfo(self, name):
-        """
-        Supplement getinfo for implied dirs.
-        """
-        try:
-            return super().getinfo(name)
-        except KeyError:
-            if not name.endswith('/') or name not in self._name_set():
-                raise
-            return zipfile.ZipInfo(filename=name)
-
-    @classmethod
-    def make(cls, source):
-        """
-        Given a source (filename or zipfile), return an
-        appropriate CompleteDirs subclass.
-        """
-        if isinstance(source, CompleteDirs):
-            return source
-
-        if not isinstance(source, zipfile.ZipFile):
-            return cls(source)
-
-        # Only allow for FastLookup when supplied zipfile is read-only
-        if 'r' not in source.mode:
-            cls = CompleteDirs
-
-        source.__class__ = cls
-        return source
-
-
-class FastLookup(CompleteDirs):
-    """
-    ZipFile subclass to ensure implicit
-    dirs exist and are resolved rapidly.
-    """
-
-    def namelist(self):
-        with contextlib.suppress(AttributeError):
-            return self.__names
-        self.__names = super().namelist()
-        return self.__names
-
-    def _name_set(self):
-        with contextlib.suppress(AttributeError):
-            return self.__lookup
-        self.__lookup = super()._name_set()
-        return self.__lookup
-
-
-def _extract_text_encoding(encoding=None, *args, **kwargs):
-    # stacklevel=3 so that the caller of the caller see any warning.
-    return io.text_encoding(encoding, 3), args, kwargs
-
-
-class Path:
-    """
-    A pathlib-compatible interface for zip files.
-
-    Consider a zip file with this structure::
-
-        .
-        ├── a.txt
-        └── b
-            ├── c.txt
-            └── d
-                └── e.txt
-
-    >>> data = io.BytesIO()
-    >>> zf = ZipFile(data, 'w')
-    >>> zf.writestr('a.txt', 'content of a')
-    >>> zf.writestr('b/c.txt', 'content of c')
-    >>> zf.writestr('b/d/e.txt', 'content of e')
-    >>> zf.filename = 'mem/abcde.zip'
-
-    Path accepts the zipfile object itself or a filename
-
-    >>> root = Path(zf)
-
-    From there, several path operations are available.
-
-    Directory iteration (including the zip file itself):
-
-    >>> a, b = root.iterdir()
-    >>> a
-    Path('mem/abcde.zip', 'a.txt')
-    >>> b
-    Path('mem/abcde.zip', 'b/')
-
-    name property:
-
-    >>> b.name
-    'b'
-
-    join with divide operator:
-
-    >>> c = b / 'c.txt'
-    >>> c
-    Path('mem/abcde.zip', 'b/c.txt')
-    >>> c.name
-    'c.txt'
-
-    Read text:
-
-    >>> c.read_text(encoding='utf-8')
-    'content of c'
-
-    existence:
-
-    >>> c.exists()
-    True
-    >>> (b / 'missing.txt').exists()
-    False
-
-    Coercion to string:
-
-    >>> import os
-    >>> str(c).replace(os.sep, posixpath.sep)
-    'mem/abcde.zip/b/c.txt'
-
-    At the root, ``name``, ``filename``, and ``parent``
-    resolve to the zipfile. Note these attributes are not
-    valid and will raise a ``ValueError`` if the zipfile
-    has no filename.
-
-    >>> root.name
-    'abcde.zip'
-    >>> str(root.filename).replace(os.sep, posixpath.sep)
-    'mem/abcde.zip'
-    >>> str(root.parent)
-    'mem'
-    """
-
-    __repr = "{self.__class__.__name__}({self.root.filename!r}, {self.at!r})"
-
-    def __init__(self, root, at=""):
-        """
-        Construct a Path from a ZipFile or filename.
-
-        Note: When the source is an existing ZipFile object,
-        its type (__class__) will be mutated to a
-        specialized type. If the caller wishes to retain the
-        original type, the caller should either create a
-        separate ZipFile object or pass a filename.
-        """
-        self.root = FastLookup.make(root)
-        self.at = at
-
-    def __eq__(self, other):
-        """
-        >>> Path(zipfile.ZipFile(io.BytesIO(), 'w')) == 'foo'
-        False
-        """
-        if self.__class__ is not other.__class__:
-            return NotImplemented
-        return (self.root, self.at) == (other.root, other.at)
-
-    def __hash__(self):
-        return hash((self.root, self.at))
-
-    def open(self, mode='r', *args, pwd=None, **kwargs):
-        """
-        Open this entry as text or binary following the semantics
-        of ``pathlib.Path.open()`` by passing arguments through
-        to io.TextIOWrapper().
-        """
-        if self.is_dir():
-            raise IsADirectoryError(self)
-        zip_mode = mode[0]
-        if not self.exists() and zip_mode == 'r':
-            raise FileNotFoundError(self)
-        stream = self.root.open(self.at, zip_mode, pwd=pwd)
-        if 'b' in mode:
-            if args or kwargs:
-                raise ValueError("encoding args invalid for binary operation")
-            return stream
-        # Text mode:
-        encoding, args, kwargs = _extract_text_encoding(*args, **kwargs)
-        return io.TextIOWrapper(stream, encoding, *args, **kwargs)
-
-    @property
-    def name(self):
-        return pathlib.Path(self.at).name or self.filename.name
-
-    @property
-    def suffix(self):
-        return pathlib.Path(self.at).suffix or self.filename.suffix
-
-    @property
-    def suffixes(self):
-        return pathlib.Path(self.at).suffixes or self.filename.suffixes
-
-    @property
-    def stem(self):
-        return pathlib.Path(self.at).stem or self.filename.stem
-
-    @property
-    def filename(self):
-        return pathlib.Path(self.root.filename).joinpath(self.at)
-
-    def read_text(self, *args, **kwargs):
-        encoding, args, kwargs = _extract_text_encoding(*args, **kwargs)
-        with self.open('r', encoding, *args, **kwargs) as strm:
-            return strm.read()
-
-    def read_bytes(self):
-        with self.open('rb') as strm:
-            return strm.read()
-
-    def _is_child(self, path):
-        return posixpath.dirname(path.at.rstrip("/")) == self.at.rstrip("/")
-
-    def _next(self, at):
-        return self.__class__(self.root, at)
-
-    def is_dir(self):
-        return not self.at or self.at.endswith("/")
-
-    def is_file(self):
-        return self.exists() and not self.is_dir()
-
-    def exists(self):
-        return self.at in self.root._name_set()
-
-    def iterdir(self):
-        if not self.is_dir():
-            raise ValueError("Can't listdir a file")
-        subs = map(self._next, self.root.namelist())
-        return filter(self._is_child, subs)
-
-    def match(self, path_pattern):
-        return pathlib.Path(self.at).match(path_pattern)
-
-    def is_symlink(self):
-        """
-        Return whether this path is a symlink. Always false (python/cpython#82102).
-        """
-        return False
-
-    def _descendants(self):
-        for child in self.iterdir():
-            yield child
-            if child.is_dir():
-                yield from child._descendants()
-
-    def glob(self, pattern):
-        if not pattern:
-            raise ValueError(f"Unacceptable pattern: {pattern!r}")
-
-        matches = re.compile(fnmatch.translate(pattern)).fullmatch
-        return (
-            child
-            for child in self._descendants()
-            if matches(str(child.relative_to(self)))
-        )
-
-    def rglob(self, pattern):
-        return self.glob(f'**/{pattern}')
-
-    def relative_to(self, other, *extra):
-        return posixpath.relpath(str(self), str(other.joinpath(*extra)))
-
-    def __str__(self):
-        return posixpath.join(self.root.filename, self.at)
-
-    def __repr__(self):
-        return self.__repr.format(self=self)
-
-    def joinpath(self, *other):
-        next = posixpath.join(self.at, *other)
-        return self._next(self.root.resolve_dir(next))
-
-    __truediv__ = joinpath
-
-    @property
-    def parent(self):
-        if not self.at:
-            return self.filename.parent
-        parent_at = posixpath.dirname(self.at.rstrip('/'))
-        if parent_at:
-            parent_at += '/'
-        return self._next(parent_at)
diff --git a/Lib/zipfile/_path/__init__.py b/Lib/zipfile/_path/__init__.py
new file mode 100644
index 00000000000000..78c413563bb2b1
--- /dev/null
+++ b/Lib/zipfile/_path/__init__.py
@@ -0,0 +1,395 @@
+import io
+import posixpath
+import zipfile
+import itertools
+import contextlib
+import pathlib
+import re
+
+from .glob import translate
+
+
+__all__ = ['Path']
+
+
+def _parents(path):
+    """
+    Given a path with elements separated by
+    posixpath.sep, generate all parents of that path.
+
+    >>> list(_parents('b/d'))
+    ['b']
+    >>> list(_parents('/b/d/'))
+    ['/b']
+    >>> list(_parents('b/d/f/'))
+    ['b/d', 'b']
+    >>> list(_parents('b'))
+    []
+    >>> list(_parents(''))
+    []
+    """
+    return itertools.islice(_ancestry(path), 1, None)
+
+
+def _ancestry(path):
+    """
+    Given a path with elements separated by
+    posixpath.sep, generate all elements of that path
+
+    >>> list(_ancestry('b/d'))
+    ['b/d', 'b']
+    >>> list(_ancestry('/b/d/'))
+    ['/b/d', '/b']
+    >>> list(_ancestry('b/d/f/'))
+    ['b/d/f', 'b/d', 'b']
+    >>> list(_ancestry('b'))
+    ['b']
+    >>> list(_ancestry(''))
+    []
+    """
+    path = path.rstrip(posixpath.sep)
+    while path and path != posixpath.sep:
+        yield path
+        path, tail = posixpath.split(path)
+
+
+_dedupe = dict.fromkeys
+"""Deduplicate an iterable in original order"""
+
+
+def _difference(minuend, subtrahend):
+    """
+    Return items in minuend not in subtrahend, retaining order
+    with O(1) lookup.
+    """
+    return itertools.filterfalse(set(subtrahend).__contains__, minuend)
+
+
+class InitializedState:
+    """
+    Mix-in to save the initialization state for pickling.
+    """
+
+    def __init__(self, *args, **kwargs):
+        self.__args = args
+        self.__kwargs = kwargs
+        super().__init__(*args, **kwargs)
+
+    def __getstate__(self):
+        return self.__args, self.__kwargs
+
+    def __setstate__(self, state):
+        args, kwargs = state
+        super().__init__(*args, **kwargs)
+
+
+class CompleteDirs(InitializedState, zipfile.ZipFile):
+    """
+    A ZipFile subclass that ensures that implied directories
+    are always included in the namelist.
+
+    >>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt']))
+    ['foo/', 'foo/bar/']
+    >>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt', 'foo/bar/']))
+    ['foo/']
+    """
+
+    @staticmethod
+    def _implied_dirs(names):
+        parents = itertools.chain.from_iterable(map(_parents, names))
+        as_dirs = (p + posixpath.sep for p in parents)
+        return _dedupe(_difference(as_dirs, names))
+
+    def namelist(self):
+        names = super().namelist()
+        return names + list(self._implied_dirs(names))
+
+    def _name_set(self):
+        return set(self.namelist())
+
+    def resolve_dir(self, name):
+        """
+        If the name represents a directory, return that name
+        as a directory (with the trailing slash).
+        """
+        names = self._name_set()
+        dirname = name + '/'
+        dir_match = name not in names and dirname in names
+        return dirname if dir_match else name
+
+    def getinfo(self, name):
+        """
+        Supplement getinfo for implied dirs.
+        """
+        try:
+            return super().getinfo(name)
+        except KeyError:
+            if not name.endswith('/') or name not in self._name_set():
+                raise
+            return zipfile.ZipInfo(filename=name)
+
+    @classmethod
+    def make(cls, source):
+        """
+        Given a source (filename or zipfile), return an
+        appropriate CompleteDirs subclass.
+        """
+        if isinstance(source, CompleteDirs):
+            return source
+
+        if not isinstance(source, zipfile.ZipFile):
+            return cls(source)
+
+        # Only allow for FastLookup when supplied zipfile is read-only
+        if 'r' not in source.mode:
+            cls = CompleteDirs
+
+        source.__class__ = cls
+        return source
+
+
+class FastLookup(CompleteDirs):
+    """
+    ZipFile subclass to ensure implicit
+    dirs exist and are resolved rapidly.
+    """
+
+    def namelist(self):
+        with contextlib.suppress(AttributeError):
+            return self.__names
+        self.__names = super().namelist()
+        return self.__names
+
+    def _name_set(self):
+        with contextlib.suppress(AttributeError):
+            return self.__lookup
+        self.__lookup = super()._name_set()
+        return self.__lookup
+
+
+def _extract_text_encoding(encoding=None, *args, **kwargs):
+    # stacklevel=3 so that the caller of the caller see any warning.
+    return io.text_encoding(encoding, 3), args, kwargs
+
+
+class Path:
+    """
+    A pathlib-compatible interface for zip files.
+
+    Consider a zip file with this structure::
+
+        .
+        ├── a.txt
+        └── b
+            ├── c.txt
+            └── d
+                └── e.txt
+
+    >>> data = io.BytesIO()
+    >>> zf = ZipFile(data, 'w')
+    >>> zf.writestr('a.txt', 'content of a')
+    >>> zf.writestr('b/c.txt', 'content of c')
+    >>> zf.writestr('b/d/e.txt', 'content of e')
+    >>> zf.filename = 'mem/abcde.zip'
+
+    Path accepts the zipfile object itself or a filename
+
+    >>> root = Path(zf)
+
+    From there, several path operations are available.
+
+    Directory iteration (including the zip file itself):
+
+    >>> a, b = root.iterdir()
+    >>> a
+    Path('mem/abcde.zip', 'a.txt')
+    >>> b
+    Path('mem/abcde.zip', 'b/')
+
+    name property:
+
+    >>> b.name
+    'b'
+
+    join with divide operator:
+
+    >>> c = b / 'c.txt'
+    >>> c
+    Path('mem/abcde.zip', 'b/c.txt')
+    >>> c.name
+    'c.txt'
+
+    Read text:
+
+    >>> c.read_text(encoding='utf-8')
+    'content of c'
+
+    existence:
+
+    >>> c.exists()
+    True
+    >>> (b / 'missing.txt').exists()
+    False
+
+    Coercion to string:
+
+    >>> import os
+    >>> str(c).replace(os.sep, posixpath.sep)
+    'mem/abcde.zip/b/c.txt'
+
+    At the root, ``name``, ``filename``, and ``parent``
+    resolve to the zipfile. Note these attributes are not
+    valid and will raise a ``ValueError`` if the zipfile
+    has no filename.
+
+    >>> root.name
+    'abcde.zip'
+    >>> str(root.filename).replace(os.sep, posixpath.sep)
+    'mem/abcde.zip'
+    >>> str(root.parent)
+    'mem'
+    """
+
+    __repr = "{self.__class__.__name__}({self.root.filename!r}, {self.at!r})"
+
+    def __init__(self, root, at=""):
+        """
+        Construct a Path from a ZipFile or filename.
+
+        Note: When the source is an existing ZipFile object,
+        its type (__class__) will be mutated to a
+        specialized type. If the caller wishes to retain the
+        original type, the caller should either create a
+        separate ZipFile object or pass a filename.
+        """
+        self.root = FastLookup.make(root)
+        self.at = at
+
+    def __eq__(self, other):
+        """
+        >>> Path(zipfile.ZipFile(io.BytesIO(), 'w')) == 'foo'
+        False
+        """
+        if self.__class__ is not other.__class__:
+            return NotImplemented
+        return (self.root, self.at) == (other.root, other.at)
+
+    def __hash__(self):
+        return hash((self.root, self.at))
+
+    def open(self, mode='r', *args, pwd=None, **kwargs):
+        """
+        Open this entry as text or binary following the semantics
+        of ``pathlib.Path.open()`` by passing arguments through
+        to io.TextIOWrapper().
+        """
+        if self.is_dir():
+            raise IsADirectoryError(self)
+        zip_mode = mode[0]
+        if not self.exists() and zip_mode == 'r':
+            raise FileNotFoundError(self)
+        stream = self.root.open(self.at, zip_mode, pwd=pwd)
+        if 'b' in mode:
+            if args or kwargs:
+                raise ValueError("encoding args invalid for binary operation")
+            return stream
+        # Text mode:
+        encoding, args, kwargs = _extract_text_encoding(*args, **kwargs)
+        return io.TextIOWrapper(stream, encoding, *args, **kwargs)
+
+    def _base(self):
+        return pathlib.PurePosixPath(self.at or self.root.filename)
+
+    @property
+    def name(self):
+        return self._base().name
+
+    @property
+    def suffix(self):
+        return self._base().suffix
+
+    @property
+    def suffixes(self):
+        return self._base().suffixes
+
+    @property
+    def stem(self):
+        return self._base().stem
+
+    @property
+    def filename(self):
+        return pathlib.Path(self.root.filename).joinpath(self.at)
+
+    def read_text(self, *args, **kwargs):
+        encoding, args, kwargs = _extract_text_encoding(*args, **kwargs)
+        with self.open('r', encoding, *args, **kwargs) as strm:
+            return strm.read()
+
+    def read_bytes(self):
+        with self.open('rb') as strm:
+            return strm.read()
+
+    def _is_child(self, path):
+        return posixpath.dirname(path.at.rstrip("/")) == self.at.rstrip("/")
+
+    def _next(self, at):
+        return self.__class__(self.root, at)
+
+    def is_dir(self):
+        return not self.at or self.at.endswith("/")
+
+    def is_file(self):
+        return self.exists() and not self.is_dir()
+
+    def exists(self):
+        return self.at in self.root._name_set()
+
+    def iterdir(self):
+        if not self.is_dir():
+            raise ValueError("Can't listdir a file")
+        subs = map(self._next, self.root.namelist())
+        return filter(self._is_child, subs)
+
+    def match(self, path_pattern):
+        return pathlib.PurePosixPath(self.at).match(path_pattern)
+
+    def is_symlink(self):
+        """
+        Return whether this path is a symlink. Always false (python/cpython#82102).
+        """
+        return False
+
+    def glob(self, pattern):
+        if not pattern:
+            raise ValueError(f"Unacceptable pattern: {pattern!r}")
+
+        prefix = re.escape(self.at)
+        matches = re.compile(prefix + translate(pattern)).fullmatch
+        return map(self._next, filter(matches, self.root.namelist()))
+
+    def rglob(self, pattern):
+        return self.glob(f'**/{pattern}')
+
+    def relative_to(self, other, *extra):
+        return posixpath.relpath(str(self), str(other.joinpath(*extra)))
+
+    def __str__(self):
+        return posixpath.join(self.root.filename, self.at)
+
+    def __repr__(self):
+        return self.__repr.format(self=self)
+
+    def joinpath(self, *other):
+        next = posixpath.join(self.at, *other)
+        return self._next(self.root.resolve_dir(next))
+
+    __truediv__ = joinpath
+
+    @property
+    def parent(self):
+        if not self.at:
+            return self.filename.parent
+        parent_at = posixpath.dirname(self.at.rstrip('/'))
+        if parent_at:
+            parent_at += '/'
+        return self._next(parent_at)
diff --git a/Lib/zipfile/_path/glob.py b/Lib/zipfile/_path/glob.py
new file mode 100644
index 00000000000000..4a2e665e27078a
--- /dev/null
+++ b/Lib/zipfile/_path/glob.py
@@ -0,0 +1,40 @@
+import re
+
+
+def translate(pattern):
+    r"""
+    Given a glob pattern, produce a regex that matches it.
+
+    >>> translate('*.txt')
+    '[^/]*\\.txt'
+    >>> translate('a?txt')
+    'a.txt'
+    >>> translate('**/*')
+    '.*/[^/]*'
+    """
+    return ''.join(map(replace, separate(pattern)))
+
+
+def separate(pattern):
+    """
+    Separate out character sets to avoid translating their contents.
+
+    >>> [m.group(0) for m in separate('*.txt')]
+    ['*.txt']
+    >>> [m.group(0) for m in separate('a[?]txt')]
+    ['a', '[?]', 'txt']
+    """
+    return re.finditer(r'([^\[]+)|(?P<set>[\[].*?[\]])|([\[][^\]]*$)', pattern)
+
+
+def replace(match):
+    """
+    Perform the replacements for a match from :func:`separate`.
+    """
+
+    return match.group('set') or (
+        re.escape(match.group(0))
+        .replace('\\*\\*', r'.*')
+        .replace('\\*', r'[^/]*')
+        .replace('\\?', r'.')
+    )
diff --git a/Lib/zipimport.py b/Lib/zipimport.py
index a7333a4c4906de..823a82ee830465 100644
--- a/Lib/zipimport.py
+++ b/Lib/zipimport.py
@@ -88,12 +88,8 @@ def __init__(self, path):
                     raise ZipImportError('not a Zip file', path=path)
                 break
 
-        try:
-            files = _zip_directory_cache[path]
-        except KeyError:
-            files = _read_directory(path)
-            _zip_directory_cache[path] = files
-        self._files = files
+        if path not in _zip_directory_cache:
+            _zip_directory_cache[path] = _read_directory(path)
         self.archive = path
         # a prefix directory following the ZIP file path.
         self.prefix = _bootstrap_external._path_join(*prefix[::-1])
@@ -152,7 +148,7 @@ def get_data(self, pathname):
             key = pathname[len(self.archive + path_sep):]
 
         try:
-            toc_entry = self._files[key]
+            toc_entry = self._get_files()[key]
         except KeyError:
             raise OSError(0, '', key)
         return _get_data(self.archive, toc_entry)
@@ -189,7 +185,7 @@ def get_source(self, fullname):
             fullpath = f'{path}.py'
 
         try:
-            toc_entry = self._files[fullpath]
+            toc_entry = self._get_files()[fullpath]
         except KeyError:
             # we have the module, but no source
             return None
@@ -268,14 +264,22 @@ def get_resource_reader(self, fullname):
         return ZipReader(self, fullname)
 
 
-    def invalidate_caches(self):
-        """Reload the file data of the archive path."""
+    def _get_files(self):
+        """Return the files within the archive path."""
         try:
-            self._files = _read_directory(self.archive)
-            _zip_directory_cache[self.archive] = self._files
-        except ZipImportError:
-            _zip_directory_cache.pop(self.archive, None)
-            self._files = {}
+            files = _zip_directory_cache[self.archive]
+        except KeyError:
+            try:
+                files = _zip_directory_cache[self.archive] = _read_directory(self.archive)
+            except ZipImportError:
+                files = {}
+
+        return files
+
+
+    def invalidate_caches(self):
+        """Invalidates the cache of file data of the archive path."""
+        _zip_directory_cache.pop(self.archive, None)
 
 
     def __repr__(self):
@@ -305,15 +309,15 @@ def _is_dir(self, path):
     # of a namespace package. We test by seeing if the name, with an
     # appended path separator, exists.
     dirpath = path + path_sep
-    # If dirpath is present in self._files, we have a directory.
-    return dirpath in self._files
+    # If dirpath is present in self._get_files(), we have a directory.
+    return dirpath in self._get_files()
 
 # Return some information about a module.
 def _get_module_info(self, fullname):
     path = _get_module_path(self, fullname)
     for suffix, isbytecode, ispackage in _zip_searchorder:
         fullpath = path + suffix
-        if fullpath in self._files:
+        if fullpath in self._get_files():
             return ispackage
     return None
 
@@ -348,7 +352,7 @@ def _read_directory(archive):
 
     with fp:
         # GH-87235: On macOS all file descriptors for /dev/fd/N share the same
-        # file offset, reset the file offset after scanning the zipfile diretory
+        # file offset, reset the file offset after scanning the zipfile directory
         # to not cause problems when some runs 'python3 /dev/fd/9 9<some_script'
         start_offset = fp.tell()
         try:
@@ -656,7 +660,7 @@ def _get_mtime_and_size_of_source(self, path):
         # strip 'c' or 'o' from *.py[co]
         assert path[-1:] in ('c', 'o')
         path = path[:-1]
-        toc_entry = self._files[path]
+        toc_entry = self._get_files()[path]
         # fetch the time stamp of the .py file for comparison
         # with an embedded pyc time stamp
         time = toc_entry[5]
@@ -676,7 +680,7 @@ def _get_pyc_source(self, path):
     path = path[:-1]
 
     try:
-        toc_entry = self._files[path]
+        toc_entry = self._get_files()[path]
     except KeyError:
         return None
     else:
@@ -692,7 +696,7 @@ def _get_module_code(self, fullname):
         fullpath = path + suffix
         _bootstrap._verbose_message('trying {}{}{}', self.archive, path_sep, fullpath, verbosity=2)
         try:
-            toc_entry = self._files[fullpath]
+            toc_entry = self._get_files()[fullpath]
         except KeyError:
             pass
         else:
diff --git a/Lib/zoneinfo/_zoneinfo.py b/Lib/zoneinfo/_zoneinfo.py
index eede15b8271058..b77dc0ed391bb3 100644
--- a/Lib/zoneinfo/_zoneinfo.py
+++ b/Lib/zoneinfo/_zoneinfo.py
@@ -517,8 +517,8 @@ class _DayOffset:
     __slots__ = ["d", "julian", "hour", "minute", "second"]
 
     def __init__(self, d, julian, hour=2, minute=0, second=0):
-        if not (0 + julian) <= d <= 365:
-            min_day = 0 + julian
+        min_day = 0 + julian  # convert bool to int
+        if not min_day <= d <= 365:
             raise ValueError(f"d must be in [{min_day}, 365], not: {d}")
 
         self.d = d
@@ -560,11 +560,11 @@ class _CalendarOffset:
     )
 
     def __init__(self, m, w, d, hour=2, minute=0, second=0):
-        if not 0 < m <= 12:
-            raise ValueError("m must be in (0, 12]")
+        if not 1 <= m <= 12:
+            raise ValueError("m must be in [1, 12]")
 
-        if not 0 < w <= 5:
-            raise ValueError("w must be in (0, 5]")
+        if not 1 <= w <= 5:
+            raise ValueError("w must be in [1, 5]")
 
         if not 0 <= d <= 6:
             raise ValueError("d must be in [0, 6]")
@@ -634,18 +634,21 @@ def _parse_tz_str(tz_str):
 
     offset_str, *start_end_str = tz_str.split(",", 1)
 
-    # fmt: off
     parser_re = re.compile(
-        r"(?P<std>[^<0-9:.+-]+|<[a-zA-Z0-9+\-]+>)" +
-        r"((?P<stdoff>[+-]?\d{1,2}(:\d{2}(:\d{2})?)?)" +
-            r"((?P<dst>[^0-9:.+-]+|<[a-zA-Z0-9+\-]+>)" +
-                r"((?P<dstoff>[+-]?\d{1,2}(:\d{2}(:\d{2})?)?))?" +
-            r")?" + # dst
-        r")?$" # stdoff
+        r"""
+        (?P<std>[^<0-9:.+-]+|<[a-zA-Z0-9+-]+>)
+        (?:
+            (?P<stdoff>[+-]?\d{1,3}(?::\d{2}(?::\d{2})?)?)
+            (?:
+                (?P<dst>[^0-9:.+-]+|<[a-zA-Z0-9+-]+>)
+                (?P<dstoff>[+-]?\d{1,3}(?::\d{2}(?::\d{2})?)?)?
+            )? # dst
+        )? # stdoff
+        """,
+        re.ASCII|re.VERBOSE
     )
-    # fmt: on
 
-    m = parser_re.match(offset_str)
+    m = parser_re.fullmatch(offset_str)
 
     if m is None:
         raise ValueError(f"{tz_str} is not a valid TZ string")
@@ -696,16 +699,17 @@ def _parse_tz_str(tz_str):
 
 
 def _parse_dst_start_end(dststr):
-    date, *time = dststr.split("/")
-    if date[0] == "M":
+    date, *time = dststr.split("/", 1)
+    type = date[:1]
+    if type == "M":
         n_is_julian = False
-        m = re.match(r"M(\d{1,2})\.(\d).(\d)$", date)
+        m = re.fullmatch(r"M(\d{1,2})\.(\d).(\d)", date, re.ASCII)
         if m is None:
             raise ValueError(f"Invalid dst start/end date: {dststr}")
         date_offset = tuple(map(int, m.groups()))
         offset = _CalendarOffset(*date_offset)
     else:
-        if date[0] == "J":
+        if type == "J":
             n_is_julian = True
             date = date[1:]
         else:
@@ -715,38 +719,54 @@ def _parse_dst_start_end(dststr):
         offset = _DayOffset(doy, n_is_julian)
 
     if time:
-        time_components = list(map(int, time[0].split(":")))
-        n_components = len(time_components)
-        if n_components < 3:
-            time_components.extend([0] * (3 - n_components))
-        offset.hour, offset.minute, offset.second = time_components
+        offset.hour, offset.minute, offset.second = _parse_transition_time(time[0])
 
     return offset
 
 
+def _parse_transition_time(time_str):
+    match = re.fullmatch(
+        r"(?P<sign>[+-])?(?P<h>\d{1,3})(:(?P<m>\d{2})(:(?P<s>\d{2}))?)?",
+        time_str,
+        re.ASCII
+    )
+    if match is None:
+        raise ValueError(f"Invalid time: {time_str}")
+
+    h, m, s = (int(v or 0) for v in match.group("h", "m", "s"))
+
+    if h > 167:
+        raise ValueError(
+            f"Hour must be in [0, 167]: {time_str}"
+        )
+
+    if match.group("sign") == "-":
+        h, m, s = -h, -m, -s
+
+    return h, m, s
+
+
 def _parse_tz_delta(tz_delta):
-    match = re.match(
-        r"(?P<sign>[+-])?(?P<h>\d{1,2})(:(?P<m>\d{2})(:(?P<s>\d{2}))?)?",
+    match = re.fullmatch(
+        r"(?P<sign>[+-])?(?P<h>\d{1,3})(:(?P<m>\d{2})(:(?P<s>\d{2}))?)?",
         tz_delta,
+        re.ASCII
     )
     # Anything passed to this function should already have hit an equivalent
     # regular expression to find the section to parse.
     assert match is not None, tz_delta
 
-    h, m, s = (
-        int(v) if v is not None else 0
-        for v in map(match.group, ("h", "m", "s"))
-    )
+    h, m, s = (int(v or 0) for v in match.group("h", "m", "s"))
 
     total = h * 3600 + m * 60 + s
 
-    if not -86400 < total < 86400:
+    if h > 24:
         raise ValueError(
-            f"Offset must be strictly between -24h and +24h: {tz_delta}"
+            f"Offset hours must be in [0, 24]: {tz_delta}"
         )
 
     # Yes, +5 maps to an offset of -5h
     if match.group("sign") != "-":
-        total *= -1
+        total = -total
 
     return total
diff --git a/Mac/BuildScript/backport_gh110950_fix.patch b/Mac/BuildScript/backport_gh110950_fix.patch
new file mode 100644
index 00000000000000..793f5a78d8c6ab
--- /dev/null
+++ b/Mac/BuildScript/backport_gh110950_fix.patch
@@ -0,0 +1,25 @@
+From https://core.tcl-lang.org/tk/info/ed7cfbac8db11aa0
+
+Note: the diff here is hand-tweaked so that it applies cleanly to both Tk 8.6.8 and 8.6.13.
+
+diff --git a/macosx/tkMacOSXInit.c b/macosx/tkMacOSXInit.c
+index 71d7c3385..e6a68356c 100644
+--- a/macosx/tkMacOSXInit.c
++++ b/macosx/tkMacOSXInit.c
+@@ -128,6 +128,16 @@ static int		TkMacOSXGetAppPathCmd(ClientData cd, Tcl_Interp *ip,
+     observe(NSApplicationDidChangeScreenParametersNotification, displayChanged:);
+     observe(NSTextInputContextKeyboardSelectionDidChangeNotification, keyboardChanged:);
+ #undef observe
++}
++
++
++/*
++ * Fix for 10b38a7a7c.
++ */
++
++- (BOOL)applicationSupportsSecureRestorableState:(NSApplication *)app
++{
++    return YES;
+ }
+ 
+ -(void)applicationWillFinishLaunching:(NSNotification *)aNotification
diff --git a/Mac/BuildScript/backport_gh71383_fix.patch b/Mac/BuildScript/backport_gh71383_fix.patch
new file mode 100644
index 00000000000000..d77b1045e8c165
--- /dev/null
+++ b/Mac/BuildScript/backport_gh71383_fix.patch
@@ -0,0 +1,89 @@
+Adapted from https://core.tcl-lang.org/tk/info/b1876b9ebc4b
+
+Index: generic/tkInt.h
+==================================================================
+--- a/generic/tkInt.h.orig
++++ b/generic/tkInt.h
+@@ -1094,10 +1094,11 @@
+ /*
+  * Themed widget set init function:
+  */
+ 
+ MODULE_SCOPE int	Ttk_Init(Tcl_Interp *interp);
++MODULE_SCOPE void	Ttk_TkDestroyedHandler(Tcl_Interp *interp);
+ 
+ /*
+  * Internal functions shared among Tk modules but not exported to the outside
+  * world:
+  */
+
+Index: generic/tkWindow.c
+==================================================================
+--- a/generic/tkWindow.c.orig
++++ b/generic/tkWindow.c
+@@ -1619,10 +1619,11 @@
+ 	    TkBindFree(winPtr->mainPtr);
+ 	    TkDeleteAllImages(winPtr->mainPtr);
+ 	    TkFontPkgFree(winPtr->mainPtr);
+ 	    TkFocusFree(winPtr->mainPtr);
+ 	    TkStylePkgFree(winPtr->mainPtr);
++	    Ttk_TkDestroyedHandler(winPtr->mainPtr->interp);
+ 
+ 	    /*
+ 	     * When embedding Tk into other applications, make sure that all
+ 	     * destroy events reach the server. Otherwise the embedding
+ 	     * application may also attempt to destroy the windows, resulting
+
+Index: generic/ttk/ttkTheme.c
+==================================================================
+--- a/generic/ttk/ttkTheme.c.orig
++++ b/generic/ttk/ttkTheme.c
+@@ -415,17 +415,10 @@
+     StylePackageData *pkgPtr = (StylePackageData *)clientData;
+     Tcl_HashSearch search;
+     Tcl_HashEntry *entryPtr;
+     Cleanup *cleanup;
+ 
+-    /*
+-     * Cancel any pending ThemeChanged calls:
+-     */
+-    if (pkgPtr->themeChangePending) {
+-	Tcl_CancelIdleCall(ThemeChangedProc, pkgPtr);
+-    }
+-
+     /*
+      * Free themes.
+      */
+     entryPtr = Tcl_FirstHashEntry(&pkgPtr->themeTable, &search);
+     while (entryPtr != NULL) {
+@@ -528,10 +521,29 @@
+     if (!pkgPtr->themeChangePending) {
+ 	Tcl_DoWhenIdle(ThemeChangedProc, pkgPtr);
+ 	pkgPtr->themeChangePending = 1;
+     }
+ }
++
++/* Ttk_TkDestroyedHandler --
++ *	See bug [310c74ecf440]: idle calls to ThemeChangedProc()
++ *	need to be canceled when Tk is destroyed, since the interp
++ *	may still be active afterward; canceling them from
++ *	Ttk_StylePkgFree() would be too late.
++ */
++void Ttk_TkDestroyedHandler(
++    Tcl_Interp* interp)
++{
++    StylePackageData* pkgPtr = GetStylePackageData(interp);
++
++    /*
++     * Cancel any pending ThemeChanged calls:
++     */
++    if (pkgPtr->themeChangePending) {
++	Tcl_CancelIdleCall(ThemeChangedProc, pkgPtr);
++    }
++}
+ 
+ /*
+  * Ttk_CreateTheme --
+  *	Create a new theme and register it in the global theme table.
+  *
+
diff --git a/Mac/BuildScript/backport_gh92603_fix.patch b/Mac/BuildScript/backport_gh92603_fix.patch
new file mode 100644
index 00000000000000..9a37b029650340
--- /dev/null
+++ b/Mac/BuildScript/backport_gh92603_fix.patch
@@ -0,0 +1,82 @@
+Accepted upstream for release in Tk 8.6.14:
+https://core.tcl-lang.org/tk/info/cf3830280b
+
+--- tk8.6.13/macosx/tkMacOSXWindowEvent.c.orig
++++ tk8.6.13-patched/macosx/tkMacOSXWindowEvent.c
+@@ -239,8 +239,8 @@ extern NSString *NSWindowDidOrderOffScreenNotification;
+     if (winPtr) {
+ 	TKContentView *view = [window contentView];
+ 
+-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101500
+-	if (@available(macOS 10.15, *)) {
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
++	if (@available(macOS 10.14, *)) {
+ 	    [view viewDidChangeEffectiveAppearance];
+ 	}
+ #endif
+@@ -1237,29 +1237,8 @@ static const char *const accentNames[] = {
+     } else if (effectiveAppearanceName == NSAppearanceNameDarkAqua) {
+ 	TkSendVirtualEvent(tkwin, "DarkAqua", NULL);
+     }
+-    if ([NSApp macOSVersion] < 101500) {
+-
+-	/*
+-	 * Mojave cannot handle the KVO shenanigans that we need for the
+-	 * highlight and accent color notifications.
+-	 */
+-
+-	return;
+-    }
+     if (!defaultColor) {
+ 	defaultColor = [NSApp macOSVersion] < 110000 ? "Blue" : "Multicolor";
+-	preferences = [[NSUserDefaults standardUserDefaults] retain];
+-
+-	/*
+-	 * AppKit calls this method when the user changes the Accent Color
+-	 * but not when the user changes the Highlight Color.  So we register
+-	 * to receive KVO notifications for Highlight Color as well.
+-	 */
+-
+-	[preferences addObserver:self
+-		      forKeyPath:@"AppleHighlightColor"
+-			 options:NSKeyValueObservingOptionNew
+-			 context:NULL];
+     }
+     NSString *accent = [preferences stringForKey:@"AppleAccentColor"];
+     NSArray *words = [[preferences stringForKey:@"AppleHighlightColor"]
+--- tk8.6.13/macosx/tkMacOSXWm.c.orig
++++ tk8.6.13-patched/macosx/tkMacOSXWm.c
+@@ -1289,6 +1289,11 @@ TkWmDeadWindow(
+ 	    [NSApp _setMainWindow:nil];
+ 	}
+ 	[deadNSWindow close];
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
++	NSUserDefaults *preferences = [NSUserDefaults standardUserDefaults];
++	[preferences removeObserver:deadNSWindow.contentView
++		      forKeyPath:@"AppleHighlightColor"];
++#endif
+ 	[deadNSWindow release];
+ 
+ #if DEBUG_ZOMBIES > 1
+@@ -6763,6 +6768,21 @@ TkMacOSXMakeRealWindowExist(
+     }
+     TKContentView *contentView = [[TKContentView alloc]
+ 				     initWithFrame:NSZeroRect];
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
++    NSUserDefaults *preferences = [NSUserDefaults standardUserDefaults];
++
++    /*
++     * AppKit calls the viewDidChangeEffectiveAppearance method when the
++     * user changes the Accent Color but not when the user changes the
++     * Highlight Color.  So we register to receive KVO notifications for
++     * Highlight Color as well.
++     */
++
++    [preferences addObserver:contentView
++		  forKeyPath:@"AppleHighlightColor"
++		     options:NSKeyValueObservingOptionNew
++		     context:NULL];
++#endif
+     [window setContentView:contentView];
+     [contentView release];
+     [window setDelegate:NSApp];
diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index 2f5937489ac03d..938c895c784f33 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -246,9 +246,9 @@ def library_recipes():
 
     result.extend([
           dict(
-              name="OpenSSL 1.1.1t",
-              url="https://www.openssl.org/source/openssl-1.1.1t.tar.gz",
-              checksum='8dee9b24bdb1dcbf0c3d1e9b02fb8f6bf22165e807f45adeb7c9677536859d3b',
+              name="OpenSSL 3.0.11",
+              url="https://www.openssl.org/source/openssl-3.0.11.tar.gz",
+              checksum='b3425d3bb4a2218d0697eb41f7fc0cdede016ed19ca49d168b78e8d947887f55',
               buildrecipe=build_universal_openssl,
               configure=None,
               install=None,
@@ -261,14 +261,14 @@ def library_recipes():
             tcl_checksum='81656d3367af032e0ae6157eff134f89'
 
             tk_checksum='5e0faecba458ee1386078fb228d008ba'
-            tk_patches = ['tk868_on_10_8_10_9.patch']
+            tk_patches = ['backport_gh71383_fix.patch', 'tk868_on_10_8_10_9.patch', 'backport_gh110950_fix.patch']
 
         else:
-            tcl_tk_ver='8.6.12'
-            tcl_checksum='87ea890821d2221f2ab5157bc5eb885f'
+            tcl_tk_ver='8.6.13'
+            tcl_checksum='43a1fae7412f61ff11de2cfd05d28cfc3a73762f354a417c62370a54e2caf066'
 
-            tk_checksum='1d6dcf6120356e3d211e056dff5e462a'
-            tk_patches = [ ]
+            tk_checksum='2e65fa069a23365440a3c56c556b8673b5e32a283800d8d9b257e3f584ce0675'
+            tk_patches = ['backport_gh92603_fix.patch', 'backport_gh71383_fix.patch', 'backport_gh110950_fix.patch']
 
 
         base_url = "https://prdownloads.sourceforge.net/tcl/{what}{version}-src.tar.gz"
@@ -359,9 +359,9 @@ def library_recipes():
                   ),
           ),
           dict(
-              name="SQLite 3.41.2",
-              url="https://sqlite.org/2023/sqlite-autoconf-3410200.tar.gz",
-              checksum="862075fd1c38324878ef809eda39edfe",
+              name="SQLite 3.43.1",
+              url="https://sqlite.org/2023/sqlite-autoconf-3430100.tar.gz",
+              checksum="77e61befe9c3298da0504f87772a24b0",
               extra_cflags=('-Os '
                             '-DSQLITE_ENABLE_FTS5 '
                             '-DSQLITE_ENABLE_FTS4 '
@@ -1147,7 +1147,9 @@ def buildPython():
     # will find them during its extension import sanity checks.
 
     print("Running configure...")
+    print(" NOTE: --with-mimalloc=no pending resolution of weak linking issues")
     runCommand("%s -C --enable-framework --enable-universalsdk=/ "
+               "--with-mimalloc=no "
                "--with-universal-archs=%s "
                "%s "
                "%s "
@@ -1490,7 +1492,7 @@ def packageFromRecipe(targetDir, recipe):
                 IFPkgFlagRelocatable=False,
                 IFPkgFlagRestartAction="NoRestart",
                 IFPkgFlagRootVolumeOnly=True,
-                IFPkgFlagUpdateInstalledLangauges=False,
+                IFPkgFlagUpdateInstalledLanguages=False,
             )
         writePlist(pl, os.path.join(packageContents, 'Info.plist'))
 
diff --git a/Mac/BuildScript/resources/ReadMe.rtf b/Mac/BuildScript/resources/ReadMe.rtf
index dbe8c520a7c78d..efd76b9b1ae64b 100644
--- a/Mac/BuildScript/resources/ReadMe.rtf
+++ b/Mac/BuildScript/resources/ReadMe.rtf
@@ -1,4 +1,4 @@
-{\rtf1\ansi\ansicpg1252\cocoartf2639
+{\rtf1\ansi\ansicpg1252\cocoartf2709
 \cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;\f2\fswiss\fcharset0 Helvetica-Oblique;
 \f3\fmodern\fcharset0 CourierNewPSMT;\f4\fmodern\fcharset0 Courier;}
 {\colortbl;\red255\green255\blue255;}
@@ -11,7 +11,7 @@
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\partightenfactor0
 
 \f1\b \cf0 NOTE: 
-\f0\b0 This is an alpha preview of Python 3.12.0, the next feature release of Python 3.  It is not intended for production use.\
+\f0\b0 This is an alpha preview of Python 3.13.0, the next feature release of Python 3.  It is not intended for production use.\
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
 \cf0 \
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
@@ -19,14 +19,14 @@
 \f1\b \cf0 \ul \ulc0 Certificate verification and OpenSSL\
 
 \f0\b0 \ulnone \
-This package includes its own private copy of OpenSSL 1.1.1.   The trust certificates in system and user keychains managed by the 
+This package includes its own private copy of OpenSSL 3.0.   The trust certificates in system and user keychains managed by the 
 \f2\i Keychain Access 
 \f0\i0 application and the 
 \f2\i security
 \f0\i0  command line utility are not used as defaults by the Python 
 \f3 ssl
 \f0  module.  A sample command script is included in 
-\f3 /Applications/Python 3.11
+\f3 /Applications/Python 3.13
 \f0  to install a curated bundle of default root certificates from the third-party 
 \f3 certifi
 \f0  package ({\field{\*\fldinst{HYPERLINK "https://pypi.org/project/certifi/"}}{\fldrslt https://pypi.org/project/certifi/}}).  Double-click on 
diff --git a/Mac/BuildScript/resources/Welcome.rtf b/Mac/BuildScript/resources/Welcome.rtf
index 1f109ee9f13e0d..79851e1f4a69cc 100644
--- a/Mac/BuildScript/resources/Welcome.rtf
+++ b/Mac/BuildScript/resources/Welcome.rtf
@@ -1,4 +1,4 @@
-{\rtf1\ansi\ansicpg1252\cocoartf2708
+{\rtf1\ansi\ansicpg1252\cocoartf2709
 \cocoascreenfonts1\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;\f2\fmodern\fcharset0 CourierNewPSMT;
 }
 {\colortbl;\red255\green255\blue255;}
@@ -25,28 +25,6 @@ At the end of this install, click on
 \f0  to install a set of current SSL root certificates.\
 \
 
-\f1\b macOS 13 Ventura users
-\f0\b0 :  Due to an issue with the macOS 
-\f1\b Installer
-\f0\b0  app, installation of some third-party packages including this Python package may fail with a vague 
-\f1\b "The installer encountered an error"
-\f0\b0  message if the 
-\f1\b Installer
-\f0\b0  app does not have permission to access the folder containing the downloaded installer file, typically in the 
-\f1\b Downloads
-\f0\b0  folder. Go to 
-\f1\b System Settings
-\f0\b0  -> 
-\f1\b Privacy & Security
-\f0\b0  -> 
-\f1\b Files and Folders
-\f0\b0 , then click the mark in front of 
-\f1\b Installer
-\f0\b0  to expand, and enable 
-\f1\b Downloads Folder
-\f0\b0  by moving the toggle to the right. See {\field{\*\fldinst{HYPERLINK "https://github.com/python/cpython/issues/103207"}}{\fldrslt https://github.com/python/cpython/issues/103207}} for up-to-date information on this issue.\
-\
-
 \f1\b NOTE: 
-\f0\b0 This is an alpha test preview of Python 3.12.0, the next feature release of Python 3.  It is not intended for production use.\
+\f0\b0 This is an alpha test preview of Python 3.13.0, the next feature release of Python 3.  It is not intended for production use.\
 }
\ No newline at end of file
diff --git a/Mac/BuildScript/scripts/postflight.framework b/Mac/BuildScript/scripts/postflight.framework
index a63909358f1719..411fda13b89559 100755
--- a/Mac/BuildScript/scripts/postflight.framework
+++ b/Mac/BuildScript/scripts/postflight.framework
@@ -8,12 +8,12 @@ FWK="/Library/Frameworks/Python.framework/Versions/@PYVER@"
 
 "${FWK}/bin/python@PYVER@" -E -s -Wi \
     "${FWK}/lib/python${PYVER}/compileall.py" -q -j0 \
-    -f -x 'bad_coding|badsyntax|site-packages|test/test_lib2to3/data' \
+    -f -x 'bad_coding|badsyntax|site-packages' \
     "${FWK}/lib/python${PYVER}"
 
 "${FWK}/bin/python@PYVER@" -E -s -Wi -O \
     "${FWK}/lib/python${PYVER}/compileall.py" -q -j0 \
-    -f -x 'bad_coding|badsyntax|site-packages|test/test_lib2to3/data' \
+    -f -x 'bad_coding|badsyntax|site-packages' \
     "${FWK}/lib/python${PYVER}"
 
 "${FWK}/bin/python@PYVER@" -E -s -Wi \
diff --git a/Mac/Makefile.in b/Mac/Makefile.in
index 69ab4198988570..32e3a0f55c5d71 100644
--- a/Mac/Makefile.in
+++ b/Mac/Makefile.in
@@ -63,7 +63,6 @@ installunixtools:
 	fi
 	cd "$(DESTDIR)$(FRAMEWORKUNIXTOOLSPREFIX)/bin" && \
 	for fn in \
-			2to3 \
 			idle3 \
 			pydoc3 \
 			python3 \
@@ -123,7 +122,6 @@ altinstallunixtools:
 	fi
 	cd "$(DESTDIR)$(FRAMEWORKUNIXTOOLSPREFIX)/bin" && \
 	for fn in \
-			2to3-$(VERSION) \
 			idle$(VERSION) \
 			pydoc$(VERSION) \
 			python$(VERSION) \
@@ -259,6 +257,8 @@ install_IDLE:
 		rm "$(DESTDIR)$(LIBDEST)/idlelib/config-extensions.def~" ; \
 	fi
 	touch "$(DESTDIR)$(PYTHONAPPSDIR)/IDLE.app"
+	chmod -R ugo+rX,go-w "$(DESTDIR)$(PYTHONAPPSDIR)/IDLE.app"
+	chmod ugo+x "$(DESTDIR)$(PYTHONAPPSDIR)/IDLE.app/Contents/MacOS/IDLE"
 
 $(INSTALLED_PYTHONAPP): install_Python
 
diff --git a/Mac/PythonLauncher/Makefile.in b/Mac/PythonLauncher/Makefile.in
index 4c05f26e8358bc..9decadbdc60f00 100644
--- a/Mac/PythonLauncher/Makefile.in
+++ b/Mac/PythonLauncher/Makefile.in
@@ -27,6 +27,8 @@ install: Python\ Launcher.app
 	-test -d "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app" && rm -r "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app"
 	/bin/cp -r "Python Launcher.app" "$(DESTDIR)$(PYTHONAPPSDIR)"
 	touch "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app"
+	chmod -R ugo+rX,go-w "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app"
+	chmod ugo+x "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app/Contents/MacOS/Python Launcher"
 
 clean:
 	rm -f *.o "Python Launcher"
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 7c44b7be5dbe67..6ca11f080dcc3f 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -100,7 +100,7 @@ CONFIGURE_LDFLAGS=	@LDFLAGS@
 # command line to append to these values without stomping the pre-set
 # values.
 PY_CFLAGS=	$(BASECFLAGS) $(OPT) $(CONFIGURE_CFLAGS) $(CFLAGS) $(EXTRA_CFLAGS)
-PY_CFLAGS_NODIST=$(CONFIGURE_CFLAGS_NODIST) $(CFLAGS_NODIST) -I$(srcdir)/Include/internal
+PY_CFLAGS_NODIST=$(CONFIGURE_CFLAGS_NODIST) $(CFLAGS_NODIST) -I$(srcdir)/Include/internal -I$(srcdir)/Include/internal/mimalloc
 # Both CPPFLAGS and LDFLAGS need to contain the shell's value for setup.py to
 # be able to build extension modules using the directories specified in the
 # environment variables
@@ -208,7 +208,7 @@ ENSUREPIP=      @ENSUREPIP@
 # Internal static libraries
 LIBMPDEC_A= Modules/_decimal/libmpdec/libmpdec.a
 LIBEXPAT_A= Modules/expat/libexpat.a
-LIBHACL_SHA2_A= Modules/_hacl/libHacl_Streaming_SHA2.a
+LIBHACL_SHA2_A= Modules/_hacl/libHacl_Hash_SHA2.a
 
 # Module state, compiler flags and linker flags
 # Empty CFLAGS and LDFLAGS are omitted.
@@ -336,6 +336,20 @@ IO_OBJS=	\
 		Modules/_io/bytesio.o \
 		Modules/_io/stringio.o
 
+
+##########################################################################
+# mimalloc
+
+MIMALLOC_HEADERS= \
+	$(srcdir)/Include/internal/pycore_mimalloc.h \
+	$(srcdir)/Include/internal/mimalloc/mimalloc.h \
+	$(srcdir)/Include/internal/mimalloc/mimalloc/atomic.h \
+	$(srcdir)/Include/internal/mimalloc/mimalloc/internal.h \
+	$(srcdir)/Include/internal/mimalloc/mimalloc/prim.h \
+	$(srcdir)/Include/internal/mimalloc/mimalloc/track.h \
+	$(srcdir)/Include/internal/mimalloc/mimalloc/types.h
+
+
 ##########################################################################
 # Parser
 
@@ -347,20 +361,36 @@ PEGEN_OBJS=		\
 		Parser/string_parser.o \
 		Parser/peg_api.o
 
+TOKENIZER_OBJS=		\
+		Parser/lexer/buffer.o \
+		Parser/lexer/lexer.o \
+		Parser/lexer/state.o \
+		Parser/tokenizer/file_tokenizer.o \
+		Parser/tokenizer/readline_tokenizer.o \
+		Parser/tokenizer/string_tokenizer.o \
+		Parser/tokenizer/utf8_tokenizer.o \
+		Parser/tokenizer/helpers.o
 
 PEGEN_HEADERS= \
 		$(srcdir)/Include/internal/pycore_parser.h \
 		$(srcdir)/Parser/pegen.h \
 		$(srcdir)/Parser/string_parser.h
 
+TOKENIZER_HEADERS= \
+		Parser/lexer/buffer.h \
+		Parser/lexer/lexer.h \
+		Parser/lexer/state.h \
+		Parser/tokenizer/tokenizer.h \
+		Parser/tokenizer/helpers.h
+
 POBJS=		\
 		Parser/token.o \
 
-PARSER_OBJS=	$(POBJS) $(PEGEN_OBJS) Parser/myreadline.o Parser/tokenizer.o
+PARSER_OBJS=	$(POBJS) $(PEGEN_OBJS) $(TOKENIZER_OBJS) Parser/myreadline.o
 
 PARSER_HEADERS= \
 		$(PEGEN_HEADERS) \
-		$(srcdir)/Parser/tokenizer.h
+		$(TOKENIZER_HEADERS)
 
 ##########################################################################
 # Python
@@ -379,6 +409,8 @@ PYTHON_OBJS=	\
 		Python/codecs.o \
 		Python/compile.o \
 		Python/context.o \
+		Python/critical_section.o \
+		Python/crossinterp.o \
 		Python/dynamic_annotations.o \
 		Python/errors.o \
 		Python/flowgraph.o \
@@ -399,10 +431,14 @@ PYTHON_OBJS=	\
 		Python/instrumentation.o \
 		Python/intrinsics.o \
 		Python/legacy_tracing.o \
+		Python/lock.o \
 		Python/marshal.o \
 		Python/modsupport.o \
 		Python/mysnprintf.o \
 		Python/mystrtoul.o \
+		Python/optimizer.o \
+		Python/optimizer_analysis.o \
+		Python/parking_lot.o \
 		Python/pathconfig.o \
 		Python/preconfig.o \
 		Python/pyarena.o \
@@ -421,6 +457,7 @@ PYTHON_OBJS=	\
 		Python/sysmodule.o \
 		Python/thread.o \
 		Python/traceback.o \
+		Python/tracemalloc.o \
 		Python/getopt.o \
 		Python/pystrcmp.o \
 		Python/pystrtod.o \
@@ -479,14 +516,13 @@ OBJECT_OBJS=	\
 		Objects/structseq.o \
 		Objects/tupleobject.o \
 		Objects/typeobject.o \
+		Objects/typevarobject.o \
 		Objects/unicodeobject.o \
 		Objects/unicodectype.o \
 		Objects/unionobject.o \
 		Objects/weakrefobject.o \
 		@PERF_TRAMPOLINE_OBJ@
 
-DEEPFREEZE_OBJS = Python/deepfreeze/deepfreeze.o
-
 ##########################################################################
 # objects that get linked into the Python library
 LIBRARY_OBJS_OMIT_FROZEN=	\
@@ -499,7 +535,6 @@ LIBRARY_OBJS_OMIT_FROZEN=	\
 
 LIBRARY_OBJS=	\
 		$(LIBRARY_OBJS_OMIT_FROZEN) \
-		$(DEEPFREEZE_OBJS) \
 		Modules/getpath.o \
 		Python/frozen.o
 
@@ -581,7 +616,7 @@ LIBEXPAT_HEADERS= \
 # hashlib's HACL* library
 
 LIBHACL_SHA2_OBJS= \
-                Modules/_hacl/Hacl_Streaming_SHA2.o
+                Modules/_hacl/Hacl_Hash_SHA2.o
 
 LIBHACL_HEADERS= \
                 Modules/_hacl/include/krml/FStar_UInt128_Verified.h \
@@ -594,8 +629,8 @@ LIBHACL_HEADERS= \
                 Modules/_hacl/python_hacl_namespaces.h
 
 LIBHACL_SHA2_HEADERS= \
-                Modules/_hacl/Hacl_Streaming_SHA2.h \
-                Modules/_hacl/internal/Hacl_SHA2_Generic.h \
+                Modules/_hacl/Hacl_Hash_SHA2.h \
+                Modules/_hacl/internal/Hacl_Hash_SHA2.h \
 		$(LIBHACL_HEADERS)
 
 #########################################################################
@@ -620,7 +655,8 @@ build_wasm: check-clean-src $(BUILDPYTHON) platform sharedmods \
 .PHONY: check-clean-src
 check-clean-src:
 	@if test -n "$(VPATH)" -a \( \
-	    -f "$(srcdir)/Programs/python.o" \
+	    -f "$(srcdir)/$(BUILDPYTHON)" \
+	    -o -f "$(srcdir)/Programs/python.o" \
 	    -o -f "$(srcdir)\Python/frozen_modules/importlib._bootstrap.h" \
 	\); then \
 		echo "Error: The source directory ($(srcdir)) is not clean" ; \
@@ -642,7 +678,7 @@ profile-gen-stamp: profile-clean-stamp
 		exit 1;\
 	fi
 	@echo "Building with support for profile generation:"
-	$(MAKE) build_all_generate_profile
+	$(MAKE) @DEF_MAKE_RULE@ CFLAGS_NODIST="$(CFLAGS_NODIST) $(PGO_PROF_GEN_FLAG)" LDFLAGS_NODIST="$(LDFLAGS_NODIST) $(PGO_PROF_GEN_FLAG)" LIBS="$(LIBS)"
 	touch $@
 
 # Run task with profile generation build to create profile information.
@@ -652,8 +688,9 @@ profile-run-stamp:
 	# enabled.
 	$(MAKE) profile-gen-stamp
 	# Next, run the profile task to generate the profile information.
-	$(MAKE) run_profile_task
-	$(MAKE) build_all_merge_profile
+	@ # FIXME: can't run for a cross build
+	$(LLVM_PROF_FILE) $(RUNSHARED) ./$(BUILDPYTHON) $(PROFILE_TASK)
+	$(LLVM_PROF_MERGER)
 	# Remove profile generation binary since we are done with it.
 	$(MAKE) clean-retain-profile
 	# This is an expensive target to build and it does not have proper
@@ -661,19 +698,6 @@ profile-run-stamp:
 	# to record its completion and avoid re-running it.
 	touch $@
 
-.PHONY: build_all_generate_profile
-build_all_generate_profile:
-	$(MAKE) @DEF_MAKE_RULE@ CFLAGS_NODIST="$(CFLAGS_NODIST) $(PGO_PROF_GEN_FLAG)" LDFLAGS_NODIST="$(LDFLAGS_NODIST) $(PGO_PROF_GEN_FLAG)" LIBS="$(LIBS)"
-
-.PHONY: run_profile_task
-run_profile_task:
-	@ # FIXME: can't run for a cross build
-	$(LLVM_PROF_FILE) $(RUNSHARED) ./$(BUILDPYTHON) $(PROFILE_TASK) || true
-
-.PHONY: build_all_merge_profile
-build_all_merge_profile:
-	$(LLVM_PROF_MERGER)
-
 # Compile Python binary with profile guided optimization.
 # To force re-running of the profile task, remove the profile-run-stamp file.
 .PHONY: profile-opt
@@ -682,21 +706,55 @@ profile-opt: profile-run-stamp
 	-rm -f profile-clean-stamp
 	$(MAKE) @DEF_MAKE_RULE@ CFLAGS_NODIST="$(CFLAGS_NODIST) $(PGO_PROF_USE_FLAG)" LDFLAGS_NODIST="$(LDFLAGS_NODIST)"
 
-.PHONY: bolt-opt
-bolt-opt: @PREBOLT_RULE@
+# List of binaries that BOLT runs on.
+BOLT_BINARIES := @BOLT_BINARIES@
+
+BOLT_INSTRUMENT_FLAGS := @BOLT_INSTRUMENT_FLAGS@
+BOLT_APPLY_FLAGS := @BOLT_APPLY_FLAGS@
+
+.PHONY: clean-bolt
+clean-bolt:
+	# Profile data.
 	rm -f *.fdata
-	@if $(READELF) -p .note.bolt_info $(BUILDPYTHON) | grep BOLT > /dev/null; then\
-		echo "skip: $(BUILDPYTHON) is already BOLTed."; \
-	else \
-		@LLVM_BOLT@ ./$(BUILDPYTHON) -instrument -instrumentation-file-append-pid -instrumentation-file=$(abspath $(BUILDPYTHON).bolt) -o $(BUILDPYTHON).bolt_inst; \
-		./$(BUILDPYTHON).bolt_inst $(PROFILE_TASK) || true; \
-		@MERGE_FDATA@ $(BUILDPYTHON).*.fdata > $(BUILDPYTHON).fdata; \
-		@LLVM_BOLT@ ./$(BUILDPYTHON) -o $(BUILDPYTHON).bolt -data=$(BUILDPYTHON).fdata -update-debug-sections -reorder-blocks=ext-tsp -reorder-functions=hfsort+ -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot; \
-		rm -f *.fdata; \
-		rm -f $(BUILDPYTHON).bolt_inst; \
-		mv $(BUILDPYTHON).bolt $(BUILDPYTHON); \
-	fi
+	# Pristine binaries before BOLT optimization.
+	rm -f *.prebolt
+	# BOLT instrumented binaries.
+	rm -f *.bolt_inst
+
+profile-bolt-stamp: $(BUILDPYTHON)
+	# Ensure a pristine, pre-BOLT copy of the binary and no profile data from last run.
+	for bin in $(BOLT_BINARIES); do \
+	  prebolt="$${bin}.prebolt"; \
+	  if [ -e "$${prebolt}" ]; then \
+	    echo "Restoring pre-BOLT binary $${prebolt}"; \
+	    mv "$${bin}.prebolt" "$${bin}"; \
+	  fi; \
+	  cp "$${bin}" "$${prebolt}"; \
+	  rm -f $${bin}.bolt.*.fdata $${bin}.fdata; \
+	done
+	# Instrument each binary.
+	for bin in $(BOLT_BINARIES); do \
+	  @LLVM_BOLT@ "$${bin}" -instrument -instrumentation-file-append-pid -instrumentation-file=$(abspath $${bin}.bolt) -o $${bin}.bolt_inst $(BOLT_INSTRUMENT_FLAGS); \
+	  mv "$${bin}.bolt_inst" "$${bin}"; \
+	done
+	# Run instrumented binaries to collect data.
+	$(RUNSHARED) ./$(BUILDPYTHON) $(PROFILE_TASK)
+	# Merge all the data files together.
+	for bin in $(BOLT_BINARIES); do \
+	  @MERGE_FDATA@ $${bin}.*.fdata > "$${bin}.fdata"; \
+	  rm -f $${bin}.*.fdata; \
+	done
+	# Run bolt against the merged data to produce an optimized binary.
+	for bin in $(BOLT_BINARIES); do \
+	  @LLVM_BOLT@ "$${bin}.prebolt" -o "$${bin}.bolt" -data="$${bin}.fdata" $(BOLT_APPLY_FLAGS); \
+	  mv "$${bin}.bolt" "$${bin}"; \
+	done
+	touch $@
 
+.PHONY: bolt-opt
+bolt-opt:
+	$(MAKE) @PREBOLT_RULE@
+	$(MAKE) profile-bolt-stamp
 
 # Compile and run with gcov
 .PHONY: coverage
@@ -742,15 +800,18 @@ coverage-report: regen-token regen-frozen
 	@ # build with coverage info
 	$(MAKE) coverage
 	@ # run tests, ignore failures
-	$(TESTRUNNER) $(TESTOPTS) || true
+	$(TESTRUNNER) --fast-ci --timeout=$(TESTTIMEOUT) $(TESTOPTS) || true
 	@ # build lcov report
 	$(MAKE) coverage-lcov
 
 # Run "Argument Clinic" over all source files
 .PHONY: clinic
 clinic: check-clean-src $(srcdir)/Modules/_blake2/blake2s_impl.c
-	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/clinic/clinic.py --make --srcdir $(srcdir)
-	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/build/generate_global_objects.py
+	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/clinic/clinic.py --make --exclude Lib/test/clinic.test.c --srcdir $(srcdir)
+
+.PHONY: clinic-tests
+clinic-tests: check-clean-src $(srcdir)/Lib/test/clinic.test.c
+	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/clinic/clinic.py -f $(srcdir)/Lib/test/clinic.test.c
 
 # Build the interpreter
 $(BUILDPYTHON):	Programs/python.o $(LINK_PYTHON_DEPS)
@@ -940,11 +1001,11 @@ $(LIBEXPAT_A): $(LIBEXPAT_OBJS)
 	$(AR) $(ARFLAGS) $@ $(LIBEXPAT_OBJS)
 
 ##########################################################################
-# Build HACL* static libraries for hashlib: libHacl_Streaming_SHA2.a
+# Build HACL* static libraries for hashlib: libHacl_Hash_SHA2.a
 LIBHACL_CFLAGS=-I$(srcdir)/Modules/_hacl/include -D_BSD_SOURCE -D_DEFAULT_SOURCE $(PY_STDMODULE_CFLAGS) $(CCSHARED)
 
-Modules/_hacl/Hacl_Streaming_SHA2.o: $(srcdir)/Modules/_hacl/Hacl_Streaming_SHA2.c $(LIBHACL_SHA2_HEADERS)
-	$(CC) -c $(LIBHACL_CFLAGS) -o $@ $(srcdir)/Modules/_hacl/Hacl_Streaming_SHA2.c
+Modules/_hacl/Hacl_Hash_SHA2.o: $(srcdir)/Modules/_hacl/Hacl_Hash_SHA2.c $(LIBHACL_SHA2_HEADERS)
+	$(CC) -c $(LIBHACL_CFLAGS) -o $@ $(srcdir)/Modules/_hacl/Hacl_Hash_SHA2.c
 
 $(LIBHACL_SHA2_A): $(LIBHACL_SHA2_OBJS)
 	-rm -f $@
@@ -1220,13 +1281,11 @@ regen-frozen: Tools/build/freeze_modules.py $(FROZEN_FILES_IN)
 ############################################################################
 # Deepfreeze targets
 
-.PHONY: regen-deepfreeze
-regen-deepfreeze: $(DEEPFREEZE_OBJS)
-
-DEEPFREEZE_DEPS=$(srcdir)/Tools/build/deepfreeze.py $(FREEZE_MODULE_DEPS) $(FROZEN_FILES_OUT)
+DEEPFREEZE_C = Python/deepfreeze/deepfreeze.c
+DEEPFREEZE_DEPS=$(srcdir)/Tools/build/deepfreeze.py Include/internal/pycore_global_strings.h $(FREEZE_MODULE_DEPS) $(FROZEN_FILES_OUT)
 
 # BEGIN: deepfreeze modules
-Python/deepfreeze/deepfreeze.c: $(DEEPFREEZE_DEPS)
+$(DEEPFREEZE_C): $(DEEPFREEZE_DEPS)
 	$(PYTHON_FOR_FREEZE) $(srcdir)/Tools/build/deepfreeze.py \
 	Python/frozen_modules/importlib._bootstrap.h:importlib._bootstrap \
 	Python/frozen_modules/importlib._bootstrap_external.h:importlib._bootstrap_external \
@@ -1253,8 +1312,6 @@ Python/deepfreeze/deepfreeze.c: $(DEEPFREEZE_DEPS)
 	Python/frozen_modules/frozen_only.h:frozen_only \
 	-o Python/deepfreeze/deepfreeze.c
 # END: deepfreeze modules
-	@echo "Note: Deepfreeze may have added some global objects,"
-	@echo "      so run 'make regen-global-objects' if necessary."
 
 # We keep this renamed target around for folks with muscle memory.
 .PHONY: regen-importlib
@@ -1263,11 +1320,11 @@ regen-importlib: regen-frozen
 ############################################################################
 # Global objects
 
+# Dependencies which can add and/or remove _Py_ID() identifiers:
+# - "make clinic"
 .PHONY: regen-global-objects
-regen-global-objects: $(srcdir)/Tools/build/generate_global_objects.py
+regen-global-objects: $(srcdir)/Tools/build/generate_global_objects.py clinic
 	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/build/generate_global_objects.py
-	@echo "Note: Global objects can be added or removed by other tools (e.g. deepfreeze), "
-	@echo "      so be sure to re-run regen-global-objects after those tools."
 
 ############################################################################
 # ABI
@@ -1286,16 +1343,26 @@ check-abidump: all
 regen-limited-abi: all
 	$(RUNSHARED) ./$(BUILDPYTHON) $(srcdir)/Tools/build/stable_abi.py --generate-all $(srcdir)/Misc/stable_abi.toml
 
+############################################################################
+# Regenerate Unicode Data
+
+.PHONY: regen-unicodedata
+regen-unicodedata:
+	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/unicode/makeunicodedata.py
+
+
 ############################################################################
 # Regenerate all generated files
 
+# "clinic" is regenerated implicitly via "regen-global-objects".
 .PHONY: regen-all
-regen-all: regen-cases regen-opcode regen-opcode-targets regen-typeslots \
-	regen-token regen-ast regen-keyword regen-sre regen-frozen clinic \
+regen-all: regen-cases regen-typeslots \
+	regen-token regen-ast regen-keyword regen-sre regen-frozen \
 	regen-pegen-metaparser regen-pegen regen-test-frozenmain \
-	regen-test-levenshtein regen-global-objects
+	regen-test-levenshtein regen-global-objects regen-sbom
 	@echo
-	@echo "Note: make regen-stdlib-module-names and make regen-configure should be run manually"
+	@echo "Note: make regen-stdlib-module-names, make regen-limited-abi, "
+	@echo "make regen-configure and make regen-unicodedata should be run manually"
 
 ############################################################################
 # Special rules for object files
@@ -1369,11 +1436,13 @@ regen-pegen-metaparser:
 .PHONY: regen-pegen
 regen-pegen:
 	@$(MKDIR_P) $(srcdir)/Parser
+	@$(MKDIR_P) $(srcdir)/Parser/tokenizer
+	@$(MKDIR_P) $(srcdir)/Parser/lexer
 	PYTHONPATH=$(srcdir)/Tools/peg_generator $(PYTHON_FOR_REGEN) -m pegen -q c \
 		$(srcdir)/Grammar/python.gram \
 		$(srcdir)/Grammar/Tokens \
-		-o $(srcdir)/Parser/parser.new.c
-	$(UPDATE_FILE) $(srcdir)/Parser/parser.c $(srcdir)/Parser/parser.new.c
+		-o $(srcdir)/Parser/parser.c.new
+	$(UPDATE_FILE) $(srcdir)/Parser/parser.c $(srcdir)/Parser/parser.c.new
 
 .PHONY: regen-ast
 regen-ast:
@@ -1393,19 +1462,6 @@ regen-ast:
 	$(UPDATE_FILE) $(srcdir)/Include/internal/pycore_ast_state.h $(srcdir)/Include/internal/pycore_ast_state.h.new
 	$(UPDATE_FILE) $(srcdir)/Python/Python-ast.c $(srcdir)/Python/Python-ast.c.new
 
-.PHONY: regen-opcode
-regen-opcode:
-	# Regenerate Include/opcode.h from Lib/opcode.py
-	# using Tools/build/generate_opcode_h.py
-	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/build/generate_opcode_h.py \
-		$(srcdir)/Lib/opcode.py \
-		$(srcdir)/Include/opcode.h.new \
-		$(srcdir)/Include/internal/pycore_opcode.h.new \
-		$(srcdir)/Include/internal/pycore_intrinsics.h.new
-	$(UPDATE_FILE) $(srcdir)/Include/opcode.h $(srcdir)/Include/opcode.h.new
-	$(UPDATE_FILE) $(srcdir)/Include/internal/pycore_opcode.h $(srcdir)/Include/internal/pycore_opcode.h.new
-	$(UPDATE_FILE) $(srcdir)/Include/internal/pycore_intrinsics.h $(srcdir)/Include/internal/pycore_intrinsics.h.new
-
 .PHONY: regen-token
 regen-token:
 	# Regenerate Doc/library/token-list.inc from Grammar/Tokens
@@ -1505,39 +1561,71 @@ Objects/unicodeobject.o: $(srcdir)/Objects/unicodeobject.c $(UNICODE_DEPS)
 Objects/dictobject.o: $(srcdir)/Objects/stringlib/eq.h
 Objects/setobject.o: $(srcdir)/Objects/stringlib/eq.h
 
-.PHONY: regen-opcode-targets
-regen-opcode-targets:
-	# Regenerate Python/opcode_targets.h from Lib/opcode.py
-	# using Python/makeopcodetargets.py
-	$(PYTHON_FOR_REGEN) $(srcdir)/Python/makeopcodetargets.py \
-		$(srcdir)/Python/opcode_targets.h.new
-	$(UPDATE_FILE) $(srcdir)/Python/opcode_targets.h $(srcdir)/Python/opcode_targets.h.new
+Objects/obmalloc.o: $(srcdir)/Objects/mimalloc/alloc.c \
+	$(srcdir)/Objects/mimalloc/alloc-aligned.c \
+		$(srcdir)/Objects/mimalloc/alloc-posix.c \
+		$(srcdir)/Objects/mimalloc/arena.c \
+		$(srcdir)/Objects/mimalloc/bitmap.c \
+		$(srcdir)/Objects/mimalloc/heap.c \
+		$(srcdir)/Objects/mimalloc/init.c \
+		$(srcdir)/Objects/mimalloc/options.c \
+		$(srcdir)/Objects/mimalloc/os.c \
+		$(srcdir)/Objects/mimalloc/page.c \
+		$(srcdir)/Objects/mimalloc/random.c \
+		$(srcdir)/Objects/mimalloc/segment.c \
+		$(srcdir)/Objects/mimalloc/segment-map.c \
+		$(srcdir)/Objects/mimalloc/stats.c \
+		$(srcdir)/Objects/mimalloc/prim/prim.c
+
+Objects/mimalloc/page.o: $(srcdir)/Objects/mimalloc/page-queue.c
 
 .PHONY: regen-cases
 regen-cases:
-	# Regenerate Python/generated_cases.c.h
-	# and Python/opcode_metadata.h
-	# from Python/bytecodes.c
-	# using Tools/cases_generator/generate_cases.py
+	# Regenerate various files from Python/bytecodes.c
+	# Pass CASESFLAG=-l to insert #line directives in the output
 	PYTHONPATH=$(srcdir)/Tools/cases_generator \
 	$(PYTHON_FOR_REGEN) \
 	    $(srcdir)/Tools/cases_generator/generate_cases.py \
-		--emit-line-directives \
-		-o $(srcdir)/Python/generated_cases.c.h.new \
-		-m $(srcdir)/Python/opcode_metadata.h.new \
+		$(CASESFLAG) \
+		-t $(srcdir)/Python/opcode_targets.h.new \
+		-m $(srcdir)/Include/internal/pycore_opcode_metadata.h.new \
+		-e $(srcdir)/Python/executor_cases.c.h.new \
+		-p $(srcdir)/Lib/_opcode_metadata.py.new \
+		-a $(srcdir)/Python/abstract_interp_cases.c.h.new \
 		$(srcdir)/Python/bytecodes.c
+	$(PYTHON_FOR_REGEN) \
+	    $(srcdir)/Tools/cases_generator/opcode_id_generator.py -o $(srcdir)/Include/opcode_ids.h.new $(srcdir)/Python/bytecodes.c
+	$(PYTHON_FOR_REGEN) \
+	    $(srcdir)/Tools/cases_generator/tier1_generator.py -o $(srcdir)/Python/generated_cases.c.h.new $(srcdir)/Python/bytecodes.c
 	$(UPDATE_FILE) $(srcdir)/Python/generated_cases.c.h $(srcdir)/Python/generated_cases.c.h.new
-	$(UPDATE_FILE) $(srcdir)/Python/opcode_metadata.h $(srcdir)/Python/opcode_metadata.h.new
+	$(UPDATE_FILE) $(srcdir)/Include/opcode_ids.h $(srcdir)/Include/opcode_ids.h.new
+	$(UPDATE_FILE) $(srcdir)/Python/opcode_targets.h $(srcdir)/Python/opcode_targets.h.new
+	$(UPDATE_FILE) $(srcdir)/Include/internal/pycore_opcode_metadata.h $(srcdir)/Include/internal/pycore_opcode_metadata.h.new
+	$(UPDATE_FILE) $(srcdir)/Python/executor_cases.c.h $(srcdir)/Python/executor_cases.c.h.new
+	$(UPDATE_FILE) $(srcdir)/Python/abstract_interp_cases.c.h $(srcdir)/Python/abstract_interp_cases.c.h.new
+	$(UPDATE_FILE) $(srcdir)/Lib/_opcode_metadata.py $(srcdir)/Lib/_opcode_metadata.py.new
 
-Python/compile.o: $(srcdir)/Python/opcode_metadata.h
+Python/compile.o: $(srcdir)/Include/internal/pycore_opcode_metadata.h
 
 Python/ceval.o: \
 		$(srcdir)/Python/ceval_macros.h \
 		$(srcdir)/Python/condvar.h \
 		$(srcdir)/Python/generated_cases.c.h \
-		$(srcdir)/Python/opcode_metadata.h \
+		$(srcdir)/Python/executor_cases.c.h \
 		$(srcdir)/Python/opcode_targets.h
 
+Python/flowgraph.o: \
+		$(srcdir)/Include/internal/pycore_opcode_metadata.h
+
+Python/optimizer.o: \
+		$(srcdir)/Python/executor_cases.c.h \
+		$(srcdir)/Include/internal/pycore_opcode_metadata.h \
+		$(srcdir)/Include/internal/pycore_optimizer.h
+
+Python/optimizer_analysis.o: \
+		$(srcdir)/Include/internal/pycore_opcode_metadata.h \
+		$(srcdir)/Include/internal/pycore_optimizer.h
+
 Python/frozen.o: $(FROZEN_FILES_OUT)
 
 # Generate DTrace probe macros, then rename them (PYTHON_ -> PyDTrace_) to
@@ -1592,6 +1680,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/floatobject.h \
 		$(srcdir)/Include/frameobject.h \
 		$(srcdir)/Include/import.h \
+		$(srcdir)/Include/interpreteridobject.h \
 		$(srcdir)/Include/intrcheck.h \
 		$(srcdir)/Include/iterobject.h \
 		$(srcdir)/Include/listobject.h \
@@ -1604,6 +1693,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/object.h \
 		$(srcdir)/Include/objimpl.h \
 		$(srcdir)/Include/opcode.h \
+		$(srcdir)/Include/opcode_ids.h \
 		$(srcdir)/Include/osdefs.h \
 		$(srcdir)/Include/osmodule.h \
 		$(srcdir)/Include/patchlevel.h \
@@ -1633,7 +1723,6 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/structseq.h \
 		$(srcdir)/Include/sysmodule.h \
 		$(srcdir)/Include/traceback.h \
-		$(srcdir)/Include/tracemalloc.h \
 		$(srcdir)/Include/tupleobject.h \
 		$(srcdir)/Include/unicodeobject.h \
 		$(srcdir)/Include/warnings.h \
@@ -1662,53 +1751,64 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/cpython/genobject.h \
 		$(srcdir)/Include/cpython/import.h \
 		$(srcdir)/Include/cpython/initconfig.h \
+		$(srcdir)/Include/cpython/interpreteridobject.h \
 		$(srcdir)/Include/cpython/listobject.h \
 		$(srcdir)/Include/cpython/longintrepr.h \
 		$(srcdir)/Include/cpython/longobject.h \
 		$(srcdir)/Include/cpython/memoryobject.h \
 		$(srcdir)/Include/cpython/methodobject.h \
-		$(srcdir)/Include/cpython/modsupport.h \
 		$(srcdir)/Include/cpython/object.h \
 		$(srcdir)/Include/cpython/objimpl.h \
 		$(srcdir)/Include/cpython/odictobject.h \
+		$(srcdir)/Include/cpython/optimizer.h \
 		$(srcdir)/Include/cpython/picklebufobject.h \
 		$(srcdir)/Include/cpython/pthread_stubs.h \
+		$(srcdir)/Include/cpython/pyatomic.h \
+		$(srcdir)/Include/cpython/pyatomic_gcc.h \
+		$(srcdir)/Include/cpython/pyatomic_std.h \
 		$(srcdir)/Include/cpython/pyctype.h \
 		$(srcdir)/Include/cpython/pydebug.h \
 		$(srcdir)/Include/cpython/pyerrors.h \
 		$(srcdir)/Include/cpython/pyfpe.h \
 		$(srcdir)/Include/cpython/pyframe.h \
+		$(srcdir)/Include/cpython/pyhash.h \
 		$(srcdir)/Include/cpython/pylifecycle.h \
 		$(srcdir)/Include/cpython/pymem.h \
 		$(srcdir)/Include/cpython/pystate.h \
+		$(srcdir)/Include/cpython/pystats.h \
 		$(srcdir)/Include/cpython/pythonrun.h \
 		$(srcdir)/Include/cpython/pythread.h \
-		$(srcdir)/Include/cpython/pytime.h \
 		$(srcdir)/Include/cpython/setobject.h \
 		$(srcdir)/Include/cpython/sysmodule.h \
 		$(srcdir)/Include/cpython/traceback.h \
+		$(srcdir)/Include/cpython/tracemalloc.h \
 		$(srcdir)/Include/cpython/tupleobject.h \
 		$(srcdir)/Include/cpython/unicodeobject.h \
 		$(srcdir)/Include/cpython/warnings.h \
 		$(srcdir)/Include/cpython/weakrefobject.h \
 		\
+		@MIMALLOC_HEADERS@ \
+		\
 		$(srcdir)/Include/internal/pycore_abstract.h \
 		$(srcdir)/Include/internal/pycore_asdl.h \
 		$(srcdir)/Include/internal/pycore_ast.h \
 		$(srcdir)/Include/internal/pycore_ast_state.h \
 		$(srcdir)/Include/internal/pycore_atexit.h \
-		$(srcdir)/Include/internal/pycore_atomic.h \
-		$(srcdir)/Include/internal/pycore_atomic_funcs.h \
 		$(srcdir)/Include/internal/pycore_bitutils.h \
 		$(srcdir)/Include/internal/pycore_bytes_methods.h \
 		$(srcdir)/Include/internal/pycore_bytesobject.h \
 		$(srcdir)/Include/internal/pycore_call.h \
+		$(srcdir)/Include/internal/pycore_capsule.h \
 		$(srcdir)/Include/internal/pycore_ceval.h \
 		$(srcdir)/Include/internal/pycore_ceval_state.h \
 		$(srcdir)/Include/internal/pycore_code.h \
+		$(srcdir)/Include/internal/pycore_codecs.h \
 		$(srcdir)/Include/internal/pycore_compile.h \
+		$(srcdir)/Include/internal/pycore_complexobject.h \
 		$(srcdir)/Include/internal/pycore_condvar.h \
 		$(srcdir)/Include/internal/pycore_context.h \
+		$(srcdir)/Include/internal/pycore_critical_section.h \
+		$(srcdir)/Include/internal/pycore_crossinterp.h \
 		$(srcdir)/Include/internal/pycore_dict.h \
 		$(srcdir)/Include/internal/pycore_dict_state.h \
 		$(srcdir)/Include/internal/pycore_descrobject.h \
@@ -1727,34 +1827,44 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/internal/pycore_global_objects_fini_generated.h \
 		$(srcdir)/Include/internal/pycore_hamt.h \
 		$(srcdir)/Include/internal/pycore_hashtable.h \
+		$(srcdir)/Include/internal/pycore_identifier.h \
 		$(srcdir)/Include/internal/pycore_import.h \
 		$(srcdir)/Include/internal/pycore_initconfig.h \
 		$(srcdir)/Include/internal/pycore_interp.h \
-		$(srcdir)/Include/internal/pycore_interpreteridobject.h \
 		$(srcdir)/Include/internal/pycore_intrinsics.h \
 		$(srcdir)/Include/internal/pycore_list.h \
+		$(srcdir)/Include/internal/pycore_llist.h \
+		$(srcdir)/Include/internal/pycore_lock.h \
 		$(srcdir)/Include/internal/pycore_long.h \
+		$(srcdir)/Include/internal/pycore_modsupport.h \
 		$(srcdir)/Include/internal/pycore_moduleobject.h \
 		$(srcdir)/Include/internal/pycore_namespace.h \
 		$(srcdir)/Include/internal/pycore_object.h \
 		$(srcdir)/Include/internal/pycore_object_state.h \
 		$(srcdir)/Include/internal/pycore_obmalloc.h \
 		$(srcdir)/Include/internal/pycore_obmalloc_init.h \
-		$(srcdir)/Include/internal/pycore_opcode.h \
+		$(srcdir)/Include/internal/pycore_opcode_metadata.h \
 		$(srcdir)/Include/internal/pycore_opcode_utils.h \
+		$(srcdir)/Include/internal/pycore_optimizer.h \
+		$(srcdir)/Include/internal/pycore_parking_lot.h \
 		$(srcdir)/Include/internal/pycore_pathconfig.h \
 		$(srcdir)/Include/internal/pycore_pyarena.h \
+		$(srcdir)/Include/internal/pycore_pybuffer.h \
 		$(srcdir)/Include/internal/pycore_pyerrors.h \
 		$(srcdir)/Include/internal/pycore_pyhash.h \
 		$(srcdir)/Include/internal/pycore_pylifecycle.h \
 		$(srcdir)/Include/internal/pycore_pymem.h \
 		$(srcdir)/Include/internal/pycore_pymem_init.h \
 		$(srcdir)/Include/internal/pycore_pystate.h \
+		$(srcdir)/Include/internal/pycore_pystats.h \
+		$(srcdir)/Include/internal/pycore_pythonrun.h \
 		$(srcdir)/Include/internal/pycore_pythread.h \
 		$(srcdir)/Include/internal/pycore_range.h \
 		$(srcdir)/Include/internal/pycore_runtime.h \
 		$(srcdir)/Include/internal/pycore_runtime_init_generated.h \
 		$(srcdir)/Include/internal/pycore_runtime_init.h \
+		$(srcdir)/Include/internal/pycore_semaphore.h \
+		$(srcdir)/Include/internal/pycore_setobject.h \
 		$(srcdir)/Include/internal/pycore_signal.h \
 		$(srcdir)/Include/internal/pycore_sliceobject.h \
 		$(srcdir)/Include/internal/pycore_strhex.h \
@@ -1765,13 +1875,17 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/internal/pycore_token.h \
 		$(srcdir)/Include/internal/pycore_traceback.h \
 		$(srcdir)/Include/internal/pycore_tracemalloc.h \
+		$(srcdir)/Include/internal/pycore_tstate.h \
 		$(srcdir)/Include/internal/pycore_tuple.h \
 		$(srcdir)/Include/internal/pycore_typeobject.h \
+		$(srcdir)/Include/internal/pycore_typevarobject.h \
 		$(srcdir)/Include/internal/pycore_ucnhash.h \
 		$(srcdir)/Include/internal/pycore_unionobject.h \
 		$(srcdir)/Include/internal/pycore_unicodeobject.h \
 		$(srcdir)/Include/internal/pycore_unicodeobject_generated.h \
+		$(srcdir)/Include/internal/pycore_uops.h \
 		$(srcdir)/Include/internal/pycore_warnings.h \
+		$(srcdir)/Include/internal/pycore_weakref.h \
 		$(DTRACE_HEADERS) \
 		@PLATFORM_HEADERS@ \
 		\
@@ -1784,8 +1898,8 @@ $(LIBRARY_OBJS) $(MODOBJS) Programs/python.o: $(PYTHON_HEADERS)
 
 TESTOPTS=	$(EXTRATESTOPTS)
 TESTPYTHON=	$(RUNSHARED) $(PYTHON_FOR_BUILD) $(TESTPYTHONOPTS)
-TESTRUNNER=	$(TESTPYTHON) $(srcdir)/Tools/scripts/run_tests.py
-TESTTIMEOUT=	1200
+TESTRUNNER=	$(TESTPYTHON) -m test
+TESTTIMEOUT=
 
 # Remove "test_python_*" directories of previous failed test jobs.
 # Pass TESTOPTS options because it can contain --tempdir option.
@@ -1795,65 +1909,47 @@ cleantest: all
 
 # Run a basic set of regression tests.
 # This excludes some tests that are particularly resource-intensive.
+# Similar to buildbottest, but use --fast-ci option, instead of --slow-ci.
 .PHONY: test
 test: all
-		$(TESTRUNNER) $(TESTOPTS)
-
-# Run the full test suite twice - once without .pyc files, and once with.
-# In the past, we've had problems where bugs in the marshalling or
-# elsewhere caused bytecode read from .pyc files to behave differently
-# than bytecode generated directly from a .py source file.  Sometimes
-# the bytecode read from a .pyc file had the bug, sometimes the directly
-# generated bytecode.  This is sometimes a very shy bug needing a lot of
-# sample data.
-.PHONY: testall
-testall: all
-		-find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
-		$(TESTPYTHON) -E $(srcdir)/Lib/compileall.py
-		-find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
-		-$(TESTRUNNER) -u all $(TESTOPTS)
-		$(TESTRUNNER) -u all $(TESTOPTS)
+	$(TESTRUNNER) --fast-ci --timeout=$(TESTTIMEOUT) $(TESTOPTS)
 
 # Run the test suite for both architectures in a Universal build on OSX.
 # Must be run on an Intel box.
 .PHONY: testuniversal
 testuniversal: all
-		@if [ `arch` != 'i386' ]; then \
-			echo "This can only be used on OSX/i386" ;\
-			exit 1 ;\
-		fi
-		$(TESTRUNNER) -u all $(TESTOPTS)
-		$(RUNSHARED) /usr/libexec/oah/translate \
-			./$(BUILDPYTHON) -E -m test -j 0 -u all $(TESTOPTS)
-
-# Like testall, but with only one pass and without multiple processes.
-# Run an optional script to include information about the build environment.
+	@if [ `arch` != 'i386' ]; then \
+		echo "This can only be used on OSX/i386" ;\
+		exit 1 ;\
+	fi
+	$(TESTRUNNER) --slow-ci --timeout=$(TESTTIMEOUT) $(TESTOPTS)
+	$(RUNSHARED) /usr/libexec/oah/translate \
+		./$(BUILDPYTHON) -E -m test -j 0 -u all $(TESTOPTS)
+
+# Like test, but using --slow-ci which enables all test resources and use
+# longer timeout. Run an optional pybuildbot.identify script to include
+# information about the build environment.
 .PHONY: buildbottest
 buildbottest: all
-		-@if which pybuildbot.identify >/dev/null 2>&1; then \
-			pybuildbot.identify "CC='$(CC)'" "CXX='$(CXX)'"; \
-		fi
-		$(TESTRUNNER) -j 1 -u all -W --slowest --fail-env-changed --timeout=$(TESTTIMEOUT) $(TESTOPTS)
-
-# Like testall, but run Python tests with HOSTRUNNER directly.
-.PHONY: hostrunnertest
-hostrunnertest: all
-	$(RUNSHARED) $(HOSTRUNNER) ./$(BUILDPYTHON) -m test -u all $(TESTOPTS)
+	-@if which pybuildbot.identify >/dev/null 2>&1; then \
+		pybuildbot.identify "CC='$(CC)'" "CXX='$(CXX)'"; \
+	fi
+	$(TESTRUNNER) --slow-ci --timeout=$(TESTTIMEOUT) $(TESTOPTS)
 
 .PHONY: pythoninfo
 pythoninfo: all
 		$(RUNSHARED) $(HOSTRUNNER) ./$(BUILDPYTHON) -m test.pythoninfo
 
-QUICKTESTOPTS=	$(TESTOPTS) -x test_subprocess test_io test_lib2to3 \
+QUICKTESTOPTS=	-x test_subprocess test_io \
 		test_multibytecodec test_urllib2_localnet test_itertools \
 		test_multiprocessing_fork test_multiprocessing_spawn \
 		test_multiprocessing_forkserver \
-		test_mailbox test_nntplib test_socket test_poll \
+		test_mailbox test_socket test_poll \
 		test_select test_zipfile test_concurrent_futures
 
 .PHONY: quicktest
 quicktest: all
-		$(TESTRUNNER) $(QUICKTESTOPTS)
+	$(TESTRUNNER) --fast-ci --timeout=$(TESTTIMEOUT) $(TESTOPTS) $(QUICKTESTOPTS)
 
 # SSL tests
 .PHONY: multisslcompile
@@ -1893,8 +1989,7 @@ altinstall: commoninstall
 .PHONY: commoninstall
 commoninstall:  check-clean-src @FRAMEWORKALTINSTALLFIRST@ \
 		altbininstall libinstall inclinstall libainstall \
-		sharedinstall altmaninstall \
-		@FRAMEWORKALTINSTALLLAST@
+		sharedinstall altmaninstall @FRAMEWORKALTINSTALLLAST@
 
 # Install shared libraries enabled by Setup
 DESTDIRS=	$(exec_prefix) $(LIBDIR) $(BINLIBDEST) $(DESTSHARED)
@@ -1989,7 +2084,11 @@ altbininstall: $(BUILDPYTHON) @FRAMEWORKPYTHONW@
 	fi
 
 .PHONY: bininstall
-bininstall: altbininstall
+# We depend on commoninstall here to make sure the installation is already usable
+# before we possibly overwrite the global 'python3' symlink to avoid causing
+# problems for anything else trying to run 'python3' while we install, particularly
+# if we're installing in parallel with -j.
+bininstall: commoninstall altbininstall
 	if test ! -d $(DESTDIR)$(LIBPC); then \
 		echo "Creating directory $(LIBPC)"; \
 		$(INSTALL) -d -m $(DIRMODE) $(DESTDIR)$(LIBPC); \
@@ -2017,8 +2116,6 @@ bininstall: altbininstall
 	(cd $(DESTDIR)$(BINDIR); $(LN) -s idle$(VERSION) idle3)
 	-rm -f $(DESTDIR)$(BINDIR)/pydoc3
 	(cd $(DESTDIR)$(BINDIR); $(LN) -s pydoc$(VERSION) pydoc3)
-	-rm -f $(DESTDIR)$(BINDIR)/2to3
-	(cd $(DESTDIR)$(BINDIR); $(LN) -s 2to3-$(VERSION) 2to3)
 	if test "x$(LIPO_32BIT_FLAGS)" != "x" ; then \
 		rm -f $(DESTDIR)$(BINDIR)/python3-32$(EXE); \
 		(cd $(DESTDIR)$(BINDIR); $(LN) -s python$(VERSION)-32$(EXE) python3-32$(EXE)) \
@@ -2065,13 +2162,13 @@ LIBSUBDIRS=	asyncio \
 		idlelib idlelib/Icons \
 		importlib importlib/resources importlib/metadata \
 		json \
-		lib2to3 lib2to3/fixes lib2to3/pgen2 \
 		logging \
 		multiprocessing multiprocessing/dummy \
 		pydoc_data \
 		re \
 		site-packages \
 		sqlite3 \
+		sysconfig \
 		tkinter \
 		tomllib \
 		turtledemo \
@@ -2081,31 +2178,41 @@ LIBSUBDIRS=	asyncio \
 		wsgiref \
 		$(XMLLIBSUBDIRS) \
 		xmlrpc \
-		zipfile \
+		zipfile zipfile/_path \
 		zoneinfo \
 		__phello__
 TESTSUBDIRS=	idlelib/idle_test \
 		test \
 		test/audiodata \
-		test/capath \
+		test/archivetestdata \
+		test/certdata \
+		test/certdata/capath \
 		test/cjkencodings \
 		test/crashers \
+		test/configdata \
 		test/data \
 		test/decimaltestdata \
 		test/dtracedata \
 		test/encoded_modules \
-		test/imghdrdata \
 		test/leakers \
 		test/libregrtest \
-		test/sndhdrdata \
+		test/mathdata \
+		test/regrtestdata \
+		test/regrtestdata/import_from_tests \
+		test/regrtestdata/import_from_tests/test_regrtest_b \
 		test/subprocessdata \
 		test/support \
 		test/support/_hypothesis_stubs \
 		test/test_asyncio \
 		test/test_capi \
+		test/test_cppext \
 		test/test_ctypes \
+		test/test_dataclasses \
 		test/test_email \
 		test/test_email/data \
+		test/test_future_stmt \
+		test/test_gdb \
+		test/test_inspect \
 		test/test_import \
 		test/test_import/data \
 		test/test_import/data/circular_imports \
@@ -2159,10 +2266,7 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/test_importlib/resources/zipdata02 \
 		test/test_importlib/source \
 		test/test_json \
-		test/test_lib2to3 \
-		test/test_lib2to3/data \
-		test/test_lib2to3/data/fixers \
-		test/test_lib2to3/data/fixers/myfixes \
+		test/test_module \
 		test/test_peg_generator \
 		test/test_sqlite3 \
 		test/test_tkinter \
@@ -2191,13 +2295,15 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/test_warnings \
 		test/test_warnings/data \
 		test/test_zipfile \
+		test/test_zipfile/_path \
 		test/test_zoneinfo \
 		test/test_zoneinfo/data \
+		test/tkinterdata \
+		test/tokenizedata \
 		test/tracedmodules \
 		test/typinganndata \
 		test/xmltestdata \
-		test/xmltestdata/c14n-20 \
-		test/ziptestdata
+		test/xmltestdata/c14n-20
 
 COMPILEALL_OPTS=-j0
 
@@ -2276,16 +2382,12 @@ libinstall:	all $(srcdir)/Modules/xxmodule.c
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		$(PYTHON_FOR_BUILD) -Wi $(DESTDIR)$(LIBDEST)/compileall.py \
 		-o 0 -o 1 -o 2 $(COMPILEALL_OPTS) -d $(LIBDEST) -f \
-		-x 'bad_coding|badsyntax|site-packages|test/test_lib2to3/data' \
+		-x 'bad_coding|badsyntax|site-packages' \
 		$(DESTDIR)$(LIBDEST)
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		$(PYTHON_FOR_BUILD) -Wi $(DESTDIR)$(LIBDEST)/compileall.py \
 		-o 0 -o 1 -o 2 $(COMPILEALL_OPTS) -d $(LIBDEST)/site-packages -f \
 		-x badsyntax $(DESTDIR)$(LIBDEST)/site-packages
-	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
-		$(PYTHON_FOR_BUILD) -m lib2to3.pgen2.driver $(DESTDIR)$(LIBDEST)/lib2to3/Grammar.txt
-	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
-		$(PYTHON_FOR_BUILD) -m lib2to3.pgen2.driver $(DESTDIR)$(LIBDEST)/lib2to3/PatternGrammar.txt
 
 # bpo-21536: Misc/python-config.sh is generated in the build directory
 # from $(srcdir)Misc/python-config.sh.in.
@@ -2305,15 +2407,9 @@ python-config: $(srcdir)/Misc/python-config.in Misc/python-config.sh
 # macOS' make seems to ignore a dependency on a
 # "$(BUILD_SCRIPTS_DIR): $(MKDIR_P) $@" rule.
 BUILD_SCRIPTS_DIR=build/scripts-$(VERSION)
-SCRIPT_2TO3=$(BUILD_SCRIPTS_DIR)/2to3-$(VERSION)
 SCRIPT_IDLE=$(BUILD_SCRIPTS_DIR)/idle$(VERSION)
 SCRIPT_PYDOC=$(BUILD_SCRIPTS_DIR)/pydoc$(VERSION)
 
-$(SCRIPT_2TO3): $(srcdir)/Tools/scripts/2to3
-	@$(MKDIR_P) $(BUILD_SCRIPTS_DIR)
-	sed -e "s,/usr/bin/env python3,$(EXENAME)," < $(srcdir)/Tools/scripts/2to3 > $@
-	@chmod +x $@
-
 $(SCRIPT_IDLE): $(srcdir)/Tools/scripts/idle3
 	@$(MKDIR_P) $(BUILD_SCRIPTS_DIR)
 	sed -e "s,/usr/bin/env python3,$(EXENAME)," < $(srcdir)/Tools/scripts/idle3 > $@
@@ -2325,7 +2421,7 @@ $(SCRIPT_PYDOC): $(srcdir)/Tools/scripts/pydoc3
 	@chmod +x $@
 
 .PHONY: scripts
-scripts: $(SCRIPT_2TO3) $(SCRIPT_IDLE) $(SCRIPT_PYDOC) python-config
+scripts: $(SCRIPT_IDLE) $(SCRIPT_PYDOC) python-config
 
 # Install the include files
 INCLDIRSTOMAKE=$(INCLUDEDIR) $(CONFINCLUDEDIR) $(INCLUDEPY) $(CONFINCLUDEPY)
@@ -2411,7 +2507,6 @@ libainstall: all scripts
 	$(INSTALL_SCRIPT) $(srcdir)/install-sh $(DESTDIR)$(LIBPL)/install-sh
 	$(INSTALL_SCRIPT) python-config.py $(DESTDIR)$(LIBPL)/python-config.py
 	$(INSTALL_SCRIPT) python-config $(DESTDIR)$(BINDIR)/python$(LDVERSION)-config
-	$(INSTALL_SCRIPT) $(SCRIPT_2TO3) $(DESTDIR)$(BINDIR)/2to3-$(VERSION)
 	$(INSTALL_SCRIPT) $(SCRIPT_IDLE) $(DESTDIR)$(BINDIR)/idle$(VERSION)
 	$(INSTALL_SCRIPT) $(SCRIPT_PYDOC) $(DESTDIR)$(BINDIR)/pydoc$(VERSION)
 	@if [ -s Modules/python.exp -a \
@@ -2556,12 +2651,11 @@ autoconf:
 
 .PHONY: regen-configure
 regen-configure:
-	@if command -v podman >/dev/null; then RUNTIME="podman"; else RUNTIME="docker"; fi; \
-	if ! command -v $$RUNTIME; then echo "$@ needs either Podman or Docker container runtime." >&2; exit 1; fi; \
-	if command -v selinuxenabled >/dev/null && selinuxenabled; then OPT=":Z"; fi; \
-	CMD="$$RUNTIME run --rm --pull=always -v $(abs_srcdir):/src$$OPT quay.io/tiran/cpython_autoconf:269"; \
-	echo $$CMD; \
-	$$CMD || exit $?
+	$(srcdir)/Tools/build/regen-configure.sh
+
+.PHONY: regen-sbom
+regen-sbom:
+	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/build/generate_sbom.py
 
 # Create a tags file for vi
 tags::
@@ -2612,7 +2706,6 @@ clean-retain-profile: pycremoval
 	find build -name '*.py' -exec rm -f {} ';' || true
 	find build -name '*.py[co]' -exec rm -f {} ';' || true
 	-rm -f pybuilddir.txt
-	-rm -f Lib/lib2to3/*Grammar*.pickle
 	-rm -f _bootstrap_python
 	-rm -f python.html python*.js python.data python*.symbols python*.map
 	-rm -f $(WASM_STDLIB)
@@ -2632,10 +2725,11 @@ profile-removal:
 	rm -f $(COVERAGE_INFO)
 	rm -rf $(COVERAGE_REPORT)
 	rm -f profile-run-stamp
+	rm -f profile-bolt-stamp
 
 .PHONY: clean
-clean: clean-retain-profile
-	@if test @DEF_MAKE_ALL_RULE@ = profile-opt; then \
+clean: clean-retain-profile clean-bolt
+	@if test @DEF_MAKE_ALL_RULE@ = profile-opt -o @DEF_MAKE_ALL_RULE@ = bolt-opt; then \
 		rm -f profile-gen-stamp profile-clean-stamp; \
 		$(MAKE) profile-removal; \
 	fi
@@ -2648,6 +2742,7 @@ clobber: clean
 	-rm -rf build platform
 	-rm -rf $(PYTHONFRAMEWORKDIR)
 	-rm -f python-config.py python-config
+	-rm -rf cross-build
 
 # Make things extra clean, before making a distribution:
 # remove all generated files, even Makefile[.pre]
@@ -2759,7 +2854,8 @@ MODULE__SHA2_DEPS=$(srcdir)/Modules/hashlib.h $(LIBHACL_SHA2_HEADERS) $(LIBHACL_
 MODULE__SHA3_DEPS=$(srcdir)/Modules/hashlib.h $(LIBHACL_HEADERS) Modules/_hacl/Hacl_Hash_SHA3.h Modules/_hacl/Hacl_Hash_SHA3.c
 MODULE__SOCKET_DEPS=$(srcdir)/Modules/socketmodule.h $(srcdir)/Modules/addrinfo.h $(srcdir)/Modules/getaddrinfo.c $(srcdir)/Modules/getnameinfo.c
 MODULE__SSL_DEPS=$(srcdir)/Modules/_ssl.h $(srcdir)/Modules/_ssl/cert.c $(srcdir)/Modules/_ssl/debughelpers.c $(srcdir)/Modules/_ssl/misc.c $(srcdir)/Modules/_ssl_data.h $(srcdir)/Modules/_ssl_data_111.h $(srcdir)/Modules/_ssl_data_300.h $(srcdir)/Modules/socketmodule.h
-MODULE__TESTCAPI_DEPS=$(srcdir)/Modules/_testcapi/testcapi_long.h $(srcdir)/Modules/_testcapi/parts.h
+MODULE__TESTCAPI_DEPS=$(srcdir)/Modules/_testcapi/testcapi_long.h $(srcdir)/Modules/_testcapi/parts.h $(srcdir)/Modules/_testcapi/util.h
+MODULE__TESTINTERNALCAPI_DEPS=$(srcdir)/Modules/_testinternalcapi/parts.h
 MODULE__SQLITE3_DEPS=$(srcdir)/Modules/_sqlite/connection.h $(srcdir)/Modules/_sqlite/cursor.h $(srcdir)/Modules/_sqlite/microprotocols.h $(srcdir)/Modules/_sqlite/module.h $(srcdir)/Modules/_sqlite/prepare_protocol.h $(srcdir)/Modules/_sqlite/row.h $(srcdir)/Modules/_sqlite/util.h
 
 CODECS_COMMON_HEADERS=$(srcdir)/Modules/cjkcodecs/multibytecodec.h $(srcdir)/Modules/cjkcodecs/cjkcodecs.h
diff --git a/Misc/ACKS b/Misc/ACKS
index 42ec059a7c4ec2..12335c911ae42a 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -226,6 +226,7 @@ Erik Bray
 Brian Brazil
 Demian Brecht
 Dave Brennan
+Christopher Richard James Brett
 Tom Bridgman
 Anthony Briggs
 Keith Briggs
@@ -253,6 +254,7 @@ Curtis Bucher
 Colm Buckley
 Erik de Bueger
 Jan-Hein Bührman
+Marc Bürg
 Lars Buitinck
 Artem Bulgakov
 Dick Bulterman
@@ -288,6 +290,7 @@ Edward Catmur
 Lorenzo M. Catucci
 Bruno Cauet
 Donn Cave
+James Cave
 Charles Cazabon
 Jesús Cea Avión
 Per Cederqvist
@@ -346,6 +349,7 @@ Robbie Clemons
 Steve Clift
 Hervé Coatanhay
 Riccardo Coccioli
+Jacob Coffee
 Nick Coghlan
 Josh Cogliati
 Noam Cohen
@@ -501,6 +505,7 @@ Daniel Ellis
 Phil Elson
 David Ely
 Victor van den Elzen
+Vlad Emelianov
 Jeff Epler
 Tom Epperly
 Gökcen Eraslan
@@ -615,6 +620,7 @@ Marius Gedminas
 Jan-Philip Gehrcke
 Thomas Gellekum
 Gabriel Genellina
+Andrew Geng
 Philip Georgi
 Christos Georgiou
 Elazar (�לעזר) Gershuni
@@ -624,6 +630,7 @@ Dinu Gherman
 Subhendu Ghosh
 Jonathan Giddy
 Johannes Gijsbers
+Stephen Gildea
 Michael Gilfix
 Julian Gindi
 Yannick Gingras
@@ -781,6 +788,7 @@ Thomas Holmes
 Craig Holmquist
 Philip Homburg
 Naofumi Honda
+Constantin Hong
 Weipeng Hong
 Jeffrey Honig
 Rob Hooft
@@ -1147,6 +1155,7 @@ Colin Marc
 Vincent Marchetti
 David Marek
 Doug Marien
+Chris Markiewicz
 Sven Marnach
 John Marshall
 Alex Martelli
@@ -1187,6 +1196,7 @@ Andrew McNamara
 Caolan McNamara
 Jeff McNeil
 Craig McPheeters
+Corvin McPherson
 Lambert Meertens
 Bill van Melle
 Lucas Prado Melo
@@ -1264,7 +1274,7 @@ R. David Murray
 Matti Mäki
 Jörg Müller
 Kaushik N
-Dong-hee Na
+Donghee Na
 Dale Nagata
 John Nagle
 Takahiro Nakayama
@@ -1326,6 +1336,7 @@ Ethan Onstott
 Ken Jin Ooi
 Piet van Oostrum
 Tomas Oppelstrup
+Itamar Oren
 Jason Orendorff
 Yan "yyyyyyyan" Orestes
 Bastien Orivel
@@ -1336,7 +1347,7 @@ Michele Orrù
 Tomáš Orsava
 Oleg Oshmyan
 Denis Osipov
-Itamar Ostricher
+Savannah Ostrowski
 Denis S. Otkidach
 Peter Otten
 Michael Otteneder
@@ -1365,6 +1376,7 @@ Peter Parente
 Alexandre Parenteau
 Dan Parisien
 HyeSoo Park
+Moonsik Park
 William Park
 Claude Paroz
 Heikki Partanen
@@ -1448,6 +1460,7 @@ Paul Prescod
 Donovan Preston
 Eric Price
 Paul Price
+Matt Prodani
 Iuliia Proskurnia
 Dorian Pula
 Jyrki Pulliainen
@@ -1471,6 +1484,7 @@ Ajith Ramachandran
 Dhushyanth Ramasamy
 Ashwin Ramaswami
 Jeff Ramnani
+Grant Ramsay
 Bayard Randel
 Varpu Rantala
 Brodie Rao
@@ -1698,10 +1712,12 @@ Ngalim Siregar
 Kragen Sitaker
 Kaartic Sivaraam
 Stanisław Skonieczny
+Bart Skowron
 Roman Skurikhin
 Ville Skyttä
 Michael Sloan
 Nick Sloan
+Tyler Smart
 Radek Smejkal
 Václav Šmilauer
 Casper W. Smet
@@ -1862,6 +1878,7 @@ Steven Troxler
 Brent Tubbs
 Anthony Tuininga
 Erno Tukia
+Adam Turner
 David Turner
 Stephen Turner
 Itamar Turner-Trauring
@@ -1946,6 +1963,7 @@ Colin Watson
 David Watson
 Aaron Watters
 Alex Waygood
+James Webber
 Russel Webber
 Henrik Weber
 Leon Weber
@@ -2060,6 +2078,7 @@ Yuxiao Zeng
 Uwe Zessin
 Cheng Zhang
 George Zhang
+Youfu Zhang
 Charlie Zhao
 Kai Zhu
 Tarek Ziadé
@@ -2067,7 +2086,5 @@ Jelle Zijlstra
 Gennadiy Zlobin
 Doug Zongker
 Peter Ã…strand
-Vlad Emelianov
-Andrey Doroschenko
 
 (Entries should be added in rough alphabetical order by last names)
diff --git a/Misc/HISTORY b/Misc/HISTORY
index e66b695f21c977..b66413277259dc 100644
--- a/Misc/HISTORY
+++ b/Misc/HISTORY
@@ -16169,7 +16169,7 @@ Core and Builtins
   codec subsystem, for example UTF-8 is turned into utf-8.
 
 - Issue #4200: Changed the atexit module to store its state in its
-  PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
+  PyModuleDef atexitmodule. This fixes a bug with multiple subinterpreters.
 
 - Issue #4237: io.FileIO() was raising invalid warnings caused by
   insufficient initialization of PyFileIOObject struct members.
diff --git a/Misc/NEWS.d/3.10.0a1.rst b/Misc/NEWS.d/3.10.0a1.rst
index 471811662644bf..a9f25b482508ba 100644
--- a/Misc/NEWS.d/3.10.0a1.rst
+++ b/Misc/NEWS.d/3.10.0a1.rst
@@ -68,7 +68,7 @@ getting the ``__bases__`` attribute leads to infinite recursion.
 .. section: Core and Builtins
 
 Speed up calls to ``reversed()`` by using the :pep:`590` ``vectorcall``
-calling convention. Patch by Dong-hee Na.
+calling convention. Patch by Donghee Na.
 
 ..
 
@@ -88,7 +88,7 @@ convention. Patch by Dennis Sweeney.
 .. section: Core and Builtins
 
 Speed up calls to ``bool()`` by using the :pep:`590` ``vectorcall`` calling
-convention. Patch by Dong-hee Na.
+convention. Patch by Donghee Na.
 
 ..
 
@@ -228,8 +228,8 @@ format string in f-string and :meth:`str.format`.
 .. section: Core and Builtins
 
 The implementation of :func:`signal.siginterrupt` now uses
-:c:func:`sigaction` (if it is available in the system) instead of the
-deprecated :c:func:`siginterrupt`. Patch by Pablo Galindo.
+:c:func:`!sigaction` (if it is available in the system) instead of the
+deprecated :c:func:`!siginterrupt`. Patch by Pablo Galindo.
 
 ..
 
@@ -714,8 +714,8 @@ Fix refleak in _Py_fopen_obj() when PySys_Audit() fails
 .. nonce: tzMy7m
 .. section: Core and Builtins
 
-Add a state to the :mod:`nis` module (:pep:`3121`) and apply the multiphase
-initialization. Patch by Dong-hee Na.
+Add a state to the :mod:`!nis` module (:pep:`3121`) and apply the multiphase
+initialization. Patch by Donghee Na.
 
 ..
 
@@ -936,7 +936,7 @@ class. Patch by Pablo Galindo.
 .. section: Core and Builtins
 
 :c:func:`Py_TYPE()` is changed to the inline static function. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -2176,7 +2176,7 @@ None.
 .. nonce: YoYoYo
 .. section: Library
 
-Add a new :data:`os.RWF_APPEND` flag for :func:`os.pwritev`.
+Add a new :const:`os.RWF_APPEND` flag for :func:`os.pwritev`.
 
 ..
 
@@ -2304,7 +2304,7 @@ Restored the deprecated :mod:`xml.etree.cElementTree` module.
 .. nonce: ZCk0_c
 .. section: Library
 
-:data:`~mmap.MAP_POPULATE` constant has now been added to the list of
+:const:`~mmap.MAP_POPULATE` constant has now been added to the list of
 exported :mod:`mmap` module flags.
 
 ..
@@ -2596,7 +2596,7 @@ remove multiple items from a list".
 .. section: Documentation
 
 Fix RemovedInSphinx40Warning when building the documentation. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -2862,7 +2862,7 @@ Make test_gdb properly run on HP-UX. Patch by Michael Osipov.
 .. section: Build
 
 Update :c:macro:`Py_UNREACHABLE` to use __builtin_unreachable() if only the
-compiler is able to use it. Patch by Dong-hee Na.
+compiler is able to use it. Patch by Donghee Na.
 
 ..
 
@@ -2986,7 +2986,7 @@ Update Windows release to include SQLite 3.32.3.
 .. nonce: jpZzzh
 .. section: Windows
 
-:mod:`msilib` now supports creating CAB files with non-ASCII file path and
+:mod:`!msilib` now supports creating CAB files with non-ASCII file path and
 adding files with non-ASCII file path to them.
 
 ..
@@ -2996,9 +2996,9 @@ adding files with non-ASCII file path to them.
 .. nonce: gaQc3C
 .. section: Windows
 
-Fixed support of non-ASCII names in functions :func:`msilib.OpenDatabase`
-and :func:`msilib.init_database` and non-ASCII SQL in method
-:meth:`msilib.Database.OpenView`.
+Fixed support of non-ASCII names in functions :func:`!msilib.OpenDatabase`
+and :func:`!msilib.init_database` and non-ASCII SQL in method
+:meth:`!msilib.Database.OpenView`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.10.0a2.rst b/Misc/NEWS.d/3.10.0a2.rst
index 061a82e90afd6b..78f4377656b0cc 100644
--- a/Misc/NEWS.d/3.10.0a2.rst
+++ b/Misc/NEWS.d/3.10.0a2.rst
@@ -185,7 +185,7 @@ Removed special methods ``__int__``, ``__float__``, ``__floordiv__``,
 
 Micro optimization when compute :c:member:`~PySequenceMethods.sq_item` and
 :c:member:`~PyMappingMethods.mp_subscript` of :class:`range`. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -205,7 +205,7 @@ error message using the current locale's encoding.
 .. nonce: iLoMVF
 .. section: Core and Builtins
 
-Micro optimization for range.index if step is 1. Patch by Dong-hee Na.
+Micro optimization for range.index if step is 1. Patch by Donghee Na.
 
 ..
 
@@ -604,7 +604,7 @@ changes the working directory.  PR by Anthony Sottile.
 .. nonce: 9wXTtY
 .. section: Library
 
-The :mod:`shelve` module now uses :data:`pickle.DEFAULT_PROTOCOL` by default
+The :mod:`shelve` module now uses :const:`pickle.DEFAULT_PROTOCOL` by default
 instead of :mod:`pickle` protocol ``3``.
 
 ..
@@ -847,8 +847,8 @@ Victor Stinner.
 .. section: C API
 
 Fix potential crash in deallocating method objects when dynamically
-allocated `PyMethodDef`'s lifetime is managed through the ``self`` argument
-of a `PyCFunction`.
+allocated :c:type:`PyMethodDef`'s lifetime is managed through the ``self`` argument
+of a :c:type:`PyCFunction`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.10.0a3.rst b/Misc/NEWS.d/3.10.0a3.rst
index 699a0dd9e8d7c4..7112819c1b4118 100644
--- a/Misc/NEWS.d/3.10.0a3.rst
+++ b/Misc/NEWS.d/3.10.0a3.rst
@@ -153,7 +153,7 @@ Allow an unparenthesized walrus in subscript indexes.
 .. section: Core and Builtins
 
 Make sure that the compiler front-end produces a well-formed control flow
-graph. Be be more aggressive in the compiler back-end, as it is now safe to
+graph. Be more aggressive in the compiler back-end, as it is now safe to
 do so.
 
 ..
@@ -394,7 +394,7 @@ Removed the ``formatter`` module, which was deprecated in Python 3.4. It is
 somewhat obsolete, little used, and not tested. It was originally scheduled
 to be removed in Python 3.6, but such removals were delayed until after
 Python 2.7 EOL. Existing users should copy whatever classes they use into
-their code. Patch by Dong-hee Na and and Terry J. Reedy.
+their code. Patch by Donghee Na and and Terry J. Reedy.
 
 ..
 
@@ -1296,7 +1296,7 @@ Port _struct extension module to multiphase initialization (:pep:`489`)
 .. nonce: 6F9o6L
 .. section: C API
 
-Port :mod:`spwd` extension module to multiphase initialization (:pep:`489`)
+Port :mod:`!spwd` extension module to multiphase initialization (:pep:`489`)
 
 ..
 
@@ -1466,7 +1466,7 @@ success. Patch by Victor Stinner.
 .. nonce: S3FWTP
 .. section: C API
 
-The :c:data:`METH_FASTCALL` calling convention is added to the limited API.
+The :c:macro:`METH_FASTCALL` calling convention is added to the limited API.
 The functions  :c:func:`PyModule_AddType`,
 :c:func:`PyType_FromModuleAndSpec`, :c:func:`PyType_GetModule` and
 :c:func:`PyType_GetModuleState` are added to the limited API on Windows.
diff --git a/Misc/NEWS.d/3.10.0a4.rst b/Misc/NEWS.d/3.10.0a4.rst
index 95f9319668db45..414823f162d85c 100644
--- a/Misc/NEWS.d/3.10.0a4.rst
+++ b/Misc/NEWS.d/3.10.0a4.rst
@@ -105,7 +105,7 @@ blocks
 .. section: Core and Builtins
 
 Make the :mod:`atexit` module state per-interpreter. It is now safe have
-more than one :mod:`atexit` module instance. Patch by Dong-hee Na and Victor
+more than one :mod:`atexit` module instance. Patch by Donghee Na and Victor
 Stinner.
 
 ..
@@ -768,7 +768,7 @@ results. Patch by Ammar Askar.
 .. section: Tests
 
 Update test_nntplib to use official group name of news.aioe.org for testing.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.10.0a5.rst b/Misc/NEWS.d/3.10.0a5.rst
index 497e3849171831..dc95e8ce072fd9 100644
--- a/Misc/NEWS.d/3.10.0a5.rst
+++ b/Misc/NEWS.d/3.10.0a5.rst
@@ -667,4 +667,4 @@ exception (if an exception is set). Patch by Victor Stinner.
 .. section: C API
 
 Fixed a compiler warning in :c:func:`Py_UNICODE_ISSPACE()` on platforms with
-signed ``wchar_t``.
+signed :c:type:`wchar_t`.
diff --git a/Misc/NEWS.d/3.10.0a6.rst b/Misc/NEWS.d/3.10.0a6.rst
index 803df6f51ce628..c379b968c9885b 100644
--- a/Misc/NEWS.d/3.10.0a6.rst
+++ b/Misc/NEWS.d/3.10.0a6.rst
@@ -294,8 +294,8 @@ actual dictionary.  This created problems for introspection tools.
 .. nonce: SwcSuU
 .. section: Library
 
-Added :data:`~os.O_EVTONLY`, :data:`~os.O_FSYNC`, :data:`~os.O_SYMLINK` and
-:data:`~os.O_NOFOLLOW_ANY` for macOS. Patch by Dong-hee Na.
+Added :const:`~os.O_EVTONLY`, :const:`~os.O_FSYNC`, :const:`~os.O_SYMLINK` and
+:const:`~os.O_NOFOLLOW_ANY` for macOS. Patch by Donghee Na.
 
 ..
 
@@ -304,7 +304,7 @@ Added :data:`~os.O_EVTONLY`, :data:`~os.O_FSYNC`, :data:`~os.O_SYMLINK` and
 .. nonce: a7Dote
 .. section: Library
 
-Adds :data:`resource.RLIMIT_KQUEUES` constant from FreeBSD to the
+Adds :const:`resource.RLIMIT_KQUEUES` constant from FreeBSD to the
 :mod:`resource` module.
 
 ..
diff --git a/Misc/NEWS.d/3.10.0a7.rst b/Misc/NEWS.d/3.10.0a7.rst
index 286d0a8a7e9190..d9cdfbd04c88d4 100644
--- a/Misc/NEWS.d/3.10.0a7.rst
+++ b/Misc/NEWS.d/3.10.0a7.rst
@@ -113,7 +113,7 @@ in f-strings. Patch by Pablo Galindo.
 .. section: Core and Builtins
 
 Speed up calls to ``map()`` by using the :pep:`590` ``vectorcall`` calling
-convention. Patch by Dong-hee Na.
+convention. Patch by Donghee Na.
 
 ..
 
@@ -215,8 +215,8 @@ a non-Python signal handler.
 .. nonce: VouZjn
 .. section: Core and Builtins
 
-Add ``__match_args__`` to :c:type:`structsequence` based classes. Patch by
-Pablo Galindo.
+Add ``__match_args__`` to :ref:`struct sequence objects <struct-sequence-objects>`.
+Patch by Pablo Galindo.
 
 ..
 
@@ -240,7 +240,7 @@ of processes that don't use sigaltstack.
 .. section: Core and Builtins
 
 Speed up calls to ``filter()`` by using the :pep:`590` ``vectorcall``
-calling convention. Patch by Dong-hee Na.
+calling convention. Patch by Donghee Na.
 
 ..
 
@@ -274,7 +274,7 @@ Co-authored-by: Tim Peters <tim.peters@gmail.com>
 
 Only handle asynchronous exceptions and requests to drop the GIL when
 returning from a call or on the back edges of loops. Makes sure that
-:meth:`__exit__` is always called in with statements, even for interrupts.
+:meth:`~object.__exit__` is always called in with statements, even for interrupts.
 
 ..
 
@@ -713,7 +713,7 @@ this situation.  Also ensures that the :func:`tempfile.gettempdir()` and
 .. section: Library
 
 Expose ``X509_V_FLAG_ALLOW_PROXY_CERTS`` as
-:data:`~ssl.VERIFY_ALLOW_PROXY_CERTS` to allow proxy certificate validation
+:const:`~ssl.VERIFY_ALLOW_PROXY_CERTS` to allow proxy certificate validation
 as explained in
 https://www.openssl.org/docs/man1.1.1/man7/proxy-certificates.html.
 
diff --git a/Misc/NEWS.d/3.10.0b1.rst b/Misc/NEWS.d/3.10.0b1.rst
index f29fc6632db26c..e7b6b93d0b6df3 100644
--- a/Misc/NEWS.d/3.10.0b1.rst
+++ b/Misc/NEWS.d/3.10.0b1.rst
@@ -516,7 +516,7 @@ encoding.
 .. section: Library
 
 Removed an unnecessary list comprehension before looping from
-:func:`urllib.parse.parse_qsl`.  Patch by Christoph Zwerschke and Dong-hee
+:func:`urllib.parse.parse_qsl`.  Patch by Christoph Zwerschke and Donghee
 Na.
 
 ..
@@ -871,7 +871,7 @@ assert_called_once_with) will unconditionally pass.
 .. nonce: -1XPDH
 .. section: Library
 
-Add :data:`ssl.OP_IGNORE_UNEXPECTED_EOF` constants (OpenSSL 3.0.0)
+Add :const:`ssl.OP_IGNORE_UNEXPECTED_EOF` constants (OpenSSL 3.0.0)
 
 ..
 
@@ -1375,8 +1375,8 @@ Add "Annotations Best Practices" document as a new HOWTO.
 .. nonce: K5aSl1
 .. section: Documentation
 
-Document the new :const:`Py_TPFLAGS_MAPPING` and
-:const:`Py_TPFLAGS_SEQUENCE` type flags.
+Document the new :c:macro:`Py_TPFLAGS_MAPPING` and
+:c:macro:`Py_TPFLAGS_SEQUENCE` type flags.
 
 ..
 
@@ -1711,7 +1711,7 @@ IDLE's shell now shows prompts in a separate side-bar.
 .. nonce: wvWt23
 .. section: C API
 
-Add a new :c:data:`Py_TPFLAGS_DISALLOW_INSTANTIATION` type flag to disallow
+Add a new :c:macro:`Py_TPFLAGS_DISALLOW_INSTANTIATION` type flag to disallow
 creating type instances. Patch by Victor Stinner.
 
 ..
@@ -1759,7 +1759,7 @@ module.
 .. nonce: Co3YhZ
 .. section: C API
 
-Introduce :const:`Py_TPFLAGS_IMMUTABLETYPE` flag for immutable type objects,
+Introduce :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` flag for immutable type objects,
 and modify :c:func:`PyType_Ready` to set it for static types. Patch by
 Erlend E. Aasland.
 
diff --git a/Misc/NEWS.d/3.11.0a1.rst b/Misc/NEWS.d/3.11.0a1.rst
index 7670e482ede5b6..26c44b6c1af0ed 100644
--- a/Misc/NEWS.d/3.11.0a1.rst
+++ b/Misc/NEWS.d/3.11.0a1.rst
@@ -292,7 +292,7 @@ Fixed pickling of range iterators that iterated for over ``2**32`` times.
 .. section: Core and Builtins
 
 A :exc:`SyntaxError` is now raised when trying to delete :const:`__debug__`.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -415,7 +415,7 @@ type :class:`float` or :class:`complex`.
 .. section: Core and Builtins
 
 A debug variable :envvar:`PYTHONDUMPREFSFILE` is added for creating a dump
-file which is generated by :option:`--with-trace-refs`. Patch by Dong-hee
+file which is generated by :option:`--with-trace-refs`. Patch by Donghee
 Na.
 
 ..
@@ -670,7 +670,7 @@ Parameter substitution of the union type with wrong types now raises
 .. section: Core and Builtins
 
 Update ``property_descr_set`` to use vectorcall if possible. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -732,7 +732,7 @@ Collapse union of equal types. E.g. the result of ``int | int`` is now
 
 On Windows, :func:`os.urandom`: uses BCryptGenRandom API instead of
 CryptGenRandom API which is deprecated from Microsoft Windows API. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -888,7 +888,7 @@ zlib.decompress on input data that expands that large.
 .. nonce: YHuV_s
 .. section: Core and Builtins
 
-Heap types with the :const:`Py_TPFLAGS_IMMUTABLETYPE` flag can now inherit
+Heap types with the :c:macro:`Py_TPFLAGS_IMMUTABLETYPE` flag can now inherit
 the :pep:`590` vectorcall protocol.  Previously, this was only possible for
 :ref:`static types <static-types>`.  Patch by Erlend E. Aasland.
 
@@ -1468,8 +1468,8 @@ an installed expat library <= 2.2.0.
 
 On Unix, if the ``sem_clockwait()`` function is available in the C library
 (glibc 2.30 and newer), the :meth:`threading.Lock.acquire` method now uses
-the monotonic clock (:data:`time.CLOCK_MONOTONIC`) for the timeout, rather
-than using the system clock (:data:`time.CLOCK_REALTIME`), to not be
+the monotonic clock (:const:`time.CLOCK_MONOTONIC`) for the timeout, rather
+than using the system clock (:const:`time.CLOCK_REALTIME`), to not be
 affected by system clock changes. Patch by Victor Stinner.
 
 ..
@@ -1657,7 +1657,7 @@ Patch by Hugo van Kemenade.
 .. section: Library
 
 Pure ASCII strings are now normalized in constant time by
-:func:`unicodedata.normalize`. Patch by Dong-hee Na.
+:func:`unicodedata.normalize`. Patch by Donghee Na.
 
 ..
 
@@ -1720,7 +1720,7 @@ Improve the speed and accuracy of statistics.pvariance().
 .. nonce: WI9zQY
 .. section: Library
 
-Remove :meth:`__getitem__` methods of
+Remove :meth:`~object.__getitem__` methods of
 :class:`xml.dom.pulldom.DOMEventStream`, :class:`wsgiref.util.FileWrapper`
 and :class:`fileinput.FileInput`, deprecated since Python 3.9.
 
@@ -1825,7 +1825,7 @@ Patch by Victor Stinner.
 .. nonce: 9nmMtB
 .. section: Library
 
-The :mod:`lib2to3` package is now deprecated and may not be able to parse
+The :mod:`!lib2to3` package is now deprecated and may not be able to parse
 Python 3.10 or newer. See the :pep:`617` (New PEG parser for CPython). Patch
 by Victor Stinner.
 
@@ -1966,9 +1966,9 @@ A new function ``operator.call`` has been added, such that
 .. nonce: ofe3ms
 .. section: Library
 
-:class:`webbrowser.MacOSX` is deprecated and will be removed in Python 3.13.
-It is untested and undocumented and also not used by webbrowser itself.
-Patch by Dong-hee Na.
+:class:`!webbrowser.MacOSX` is deprecated and will be removed in Python 3.13.
+It is untested and undocumented and also not used by :mod:`webbrowser` itself.
+Patch by Donghee Na.
 
 ..
 
@@ -2087,8 +2087,8 @@ Upgrade bundled pip to 21.2.3 and setuptools to 57.4.0
 .. section: Library
 
 Fix the :func:`os.set_inheritable` function on FreeBSD 14 for file
-descriptor opened with the :data:`~os.O_PATH` flag: ignore the
-:data:`~errno.EBADF` error on ``ioctl()``, fallback on the ``fcntl()``
+descriptor opened with the :const:`~os.O_PATH` flag: ignore the
+:const:`~errno.EBADF` error on ``ioctl()``, fallback on the ``fcntl()``
 implementation. Patch by Victor Stinner.
 
 ..
@@ -2465,7 +2465,7 @@ generator
 .. section: Library
 
 Make the implementation consistency of :func:`~operator.indexOf` between C
-and Python versions. Patch by Dong-hee Na.
+and Python versions. Patch by Donghee Na.
 
 ..
 
@@ -2575,7 +2575,7 @@ E. Aasland.
 .. nonce: bamAGF
 .. section: Library
 
-Set the proper :const:`Py_TPFLAGS_MAPPING` and :const:`Py_TPFLAGS_SEQUENCE`
+Set the proper :c:macro:`Py_TPFLAGS_MAPPING` and :c:macro:`Py_TPFLAGS_SEQUENCE`
 flags for subclasses created before a parent has been registered as a
 :class:`collections.abc.Mapping` or :class:`collections.abc.Sequence`.
 
@@ -2693,7 +2693,7 @@ libgcc_s.so file (ex: EMFILE error). Patch by Victor Stinner.
 .. section: Library
 
 The _thread.RLock type now fully implement the GC protocol: add a traverse
-function and the :const:`Py_TPFLAGS_HAVE_GC` flag. Patch by Victor Stinner.
+function and the :c:macro:`Py_TPFLAGS_HAVE_GC` flag. Patch by Victor Stinner.
 
 ..
 
@@ -2752,7 +2752,7 @@ of reserved filenames, including those with trailing spaces or colons.
 .. section: Library
 
 Fix :meth:`~email.message.MIMEPart.as_string` to pass unixfrom properly.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -2809,7 +2809,7 @@ behaves differently than the similar implementation in :mod:`sysconfig`.
 .. section: Library
 
 :class:`smtpd.MailmanProxy` is now removed as it is unusable without an
-external module, ``mailman``. Patch by Dong-hee Na.
+external module, ``mailman``. Patch by Donghee Na.
 
 ..
 
@@ -2916,7 +2916,7 @@ Support PEP 515 for Fraction's initialization from string.
 .. nonce: qFBYpp
 .. section: Library
 
-Remove deprecated functions in the :mod:`gettext`. Patch by Dong-hee Na.
+Remove deprecated functions in the :mod:`gettext`. Patch by Donghee Na.
 
 ..
 
@@ -3483,9 +3483,9 @@ Improved reprs of :mod:`threading` synchronization objects:
 Deprecated the following :mod:`unittest` functions, scheduled for removal in
 Python 3.13:
 
-* :func:`~unittest.findTestCases`
-* :func:`~unittest.makeSuite`
-* :func:`~unittest.getTestCaseNames`
+* :func:`~!unittest.findTestCases`
+* :func:`~!unittest.makeSuite`
+* :func:`~!unittest.getTestCaseNames`
 
 Use :class:`~unittest.TestLoader` methods instead:
 
@@ -4471,7 +4471,7 @@ and modify the frozen modules.
 .. section: Build
 
 Add support for building with clang thin lto via --with-lto=thin/full. Patch
-by Dong-hee Na and Brett Holman.
+by Donghee Na and Brett Holman.
 
 ..
 
@@ -4798,7 +4798,7 @@ Allow the Argument Clinic tool to handle ``__complex__`` special methods.
 
 Removed the 'test2to3' demo project that demonstrated using lib2to3 to
 support Python 2.x and Python 3.x from a single source in a distutils
-package. Patch by Dong-hee Na
+package. Patch by Donghee Na
 
 ..
 
@@ -4980,7 +4980,7 @@ Removed documentation for the removed ``PyParser_*`` C API.
 .. nonce: fy0AXK
 .. section: C API
 
-The list in :ref:`stable-abi-list` now shows the public name
+The list in :ref:`limited-api-list` now shows the public name
 :c:struct:`PyFrameObject` rather than ``_frame``. The non-existing entry
 ``_node`` no longer appears in the list.
 
@@ -5014,7 +5014,7 @@ must now be used to set an object type and size. Patch by Victor Stinner.
 .. section: C API
 
 The :c:func:`PyType_Ready` function now raises an error if a type is defined
-with the :const:`Py_TPFLAGS_HAVE_GC` flag set but has no traverse function
+with the :c:macro:`Py_TPFLAGS_HAVE_GC` flag set but has no traverse function
 (:c:member:`PyTypeObject.tp_traverse`). Patch by Victor Stinner.
 
 ..
@@ -5036,15 +5036,15 @@ Limited API.
 
 Deprecate the following functions to configure the Python initialization:
 
-* :c:func:`PySys_AddWarnOptionUnicode`
-* :c:func:`PySys_AddWarnOption`
-* :c:func:`PySys_AddXOption`
-* :c:func:`PySys_HasWarnOptions`
-* :c:func:`Py_SetPath`
-* :c:func:`Py_SetProgramName`
-* :c:func:`Py_SetPythonHome`
-* :c:func:`Py_SetStandardStreamEncoding`
-* :c:func:`_Py_SetProgramFullPath`
+* :c:func:`!PySys_AddWarnOptionUnicode`
+* :c:func:`!PySys_AddWarnOption`
+* :c:func:`!PySys_AddXOption`
+* :c:func:`!PySys_HasWarnOptions`
+* :c:func:`!Py_SetPath`
+* :c:func:`!Py_SetProgramName`
+* :c:func:`!Py_SetPythonHome`
+* :c:func:`!Py_SetStandardStreamEncoding`
+* :c:func:`!_Py_SetProgramFullPath`
 
 Use the new :c:type:`PyConfig` API of the :ref:`Python Initialization
 Configuration <init-config>` instead (:pep:`587`).
diff --git a/Misc/NEWS.d/3.11.0a2.rst b/Misc/NEWS.d/3.11.0a2.rst
index 225bd61e90d4a8..503e489b658e4d 100644
--- a/Misc/NEWS.d/3.11.0a2.rst
+++ b/Misc/NEWS.d/3.11.0a2.rst
@@ -142,7 +142,7 @@ Add SipHash13 for string hash algorithm and use it by default.
 .. nonce: CTUT8s
 .. section: Core and Builtins
 
-Fix reference leak from descr_check. Patch by Dong-hee Na.
+Fix reference leak from descr_check. Patch by Donghee Na.
 
 ..
 
@@ -263,7 +263,7 @@ Improve the generated bytecode for class and mapping patterns.
 .. section: Core and Builtins
 
 Speed up calls to ``enumerate()`` by using the :pep:`590` ``vectorcall``
-calling convention. Patch by Dong-hee Na.
+calling convention. Patch by Donghee Na.
 
 ..
 
@@ -396,7 +396,7 @@ Patch by Inada Naoki.
 .. section: Library
 
 Update :class:`~typing.ForwardRef` to support ``|`` operator. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -486,7 +486,7 @@ Patch by Joongi Kim.
 .. section: Library
 
 Empty escapechar/quotechar is not allowed when initializing
-:class:`csv.Dialect`. Patch by Vajrasky Kok and Dong-hee Na.
+:class:`csv.Dialect`. Patch by Vajrasky Kok and Donghee Na.
 
 ..
 
@@ -569,7 +569,7 @@ formatting options.
 .. section: Library
 
 Improve error message of :class:`csv.Dialect` when initializing. Patch by
-Vajrasky Kok and Dong-hee Na.
+Vajrasky Kok and Donghee Na.
 
 ..
 
@@ -1234,7 +1234,7 @@ defined:
 * :c:func:`PyMarshal_WriteObjectToString`
 * the ``Py_MARSHAL_VERSION`` macro
 
-These are not part of the :ref:`limited API <stable-abi-list>`.
+These are not part of the :ref:`limited API <limited-api-list>`.
 
 Patch by Victor Stinner.
 
diff --git a/Misc/NEWS.d/3.11.0a3.rst b/Misc/NEWS.d/3.11.0a3.rst
index 426531904993a9..a96a59115797ee 100644
--- a/Misc/NEWS.d/3.11.0a3.rst
+++ b/Misc/NEWS.d/3.11.0a3.rst
@@ -440,7 +440,7 @@ Added missing kw_only parameter to dataclasses.make_dataclass().
 .. nonce: aGyr1I
 .. section: Library
 
-The :meth:`turtle.RawTurtle.settiltangle` is deprecated since Python 3.1, it
+The :meth:`!turtle.RawTurtle.settiltangle` is deprecated since Python 3.1, it
 now emits a deprecation warning and will be removed in Python 3.13.
 
 Use :meth:`turtle.RawTurtle.tiltangle` instead.
@@ -615,7 +615,7 @@ Launch GNOME web browsers via gio tool instead of obsolete gvfs-open
 .. section: Library
 
 On Windows, :func:`time.sleep` now uses a waitable timer which supports
-high-resolution timers. Patch by Dong-hee Na and Eryk Sun.
+high-resolution timers. Patch by Donghee Na and Eryk Sun.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0a4.rst b/Misc/NEWS.d/3.11.0a4.rst
index bcb6e8b7bdde31..3dd335929d655f 100644
--- a/Misc/NEWS.d/3.11.0a4.rst
+++ b/Misc/NEWS.d/3.11.0a4.rst
@@ -839,7 +839,7 @@ patch by Kumar Aditya.
 .. nonce: jeiPiX
 .. section: Library
 
-Added :data:`signal.SIGSTKFLT` on platforms where this signal is defined.
+Added :const:`signal.SIGSTKFLT` on platforms where this signal is defined.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0a5.rst b/Misc/NEWS.d/3.11.0a5.rst
index c28078da8d8339..08d94e82ed8ccf 100644
--- a/Misc/NEWS.d/3.11.0a5.rst
+++ b/Misc/NEWS.d/3.11.0a5.rst
@@ -127,7 +127,7 @@ Aditya.
 .. section: Core and Builtins
 
 Speed up calls to :meth:`weakref.ref.__call__` by using the :pep:`590`
-``vectorcall`` calling convention. Patch by Dong-hee Na.
+``vectorcall`` calling convention. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0a6.rst b/Misc/NEWS.d/3.11.0a6.rst
index 8621edcfb04bb3..52055b3fafd485 100644
--- a/Misc/NEWS.d/3.11.0a6.rst
+++ b/Misc/NEWS.d/3.11.0a6.rst
@@ -352,7 +352,7 @@ rather than ``JUMP_FORWARD`` with an argument of ``(2**32)+offset``.
 .. nonce: 3Z_qxd
 .. section: Core and Builtins
 
-Correct the docstring for the :meth:`__bool__` method. Patch by Jelle
+Correct the docstring for the :meth:`~object.__bool__` method. Patch by Jelle
 Zijlstra.
 
 ..
@@ -382,7 +382,7 @@ involving lots of brackets. Patch by Pablo Galindo.
 .. section: Core and Builtins
 
 :mod:`ctypes` now allocates memory on the stack instead of on the heap to
-pass arguments while calling a Python callback function. Patch by Dong-hee
+pass arguments while calling a Python callback function. Patch by Donghee
 Na.
 
 ..
@@ -441,7 +441,7 @@ Add a missing call to ``va_end()`` in ``Modules/_hashopenssl.c``.
 .. section: Core and Builtins
 
 Use :c:func:`PyObject_Vectorcall` while calling ctypes callback function.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -514,7 +514,7 @@ For performance, use the optimized string-searching implementations from
 .. section: Library
 
 :class:`~http.server.SimpleHTTPRequestHandler` now uses HTML5 grammar. Patch
-by Dong-hee Na.
+by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0a7.rst b/Misc/NEWS.d/3.11.0a7.rst
index 8e7ccd4d6771ee..6e41f9cbd933b5 100644
--- a/Misc/NEWS.d/3.11.0a7.rst
+++ b/Misc/NEWS.d/3.11.0a7.rst
@@ -89,7 +89,7 @@ problem. Define :c:macro:`PY_CALL_TRAMPOLINE` to enable call trampolines.
 .. section: Core and Builtins
 
 Some Windows system error codes(>= 10000) are now mapped into the correct
-errno and may now raise a subclass of :exc:`OSError`. Patch by Dong-hee Na.
+errno and may now raise a subclass of :exc:`OSError`. Patch by Donghee Na.
 
 ..
 
@@ -275,7 +275,7 @@ initializing to ``list_extend``. Patch by Jeremiah Pascual.
 .. nonce: cnaIK3
 .. section: Core and Builtins
 
-Speed up throwing exception in generator with :const:`METH_FASTCALL` calling
+Speed up throwing exception in generator with :c:macro:`METH_FASTCALL` calling
 convention. Patch by Kumar Aditya.
 
 ..
@@ -989,7 +989,7 @@ references in :ref:`PEP 585 generic aliases <types-genericalias>`.
 .. nonce: xnhT4a
 .. section: Library
 
-Add :exc:`DeprecationWarning` to :class:`LegacyInterpolation`, deprecated in
+Add :exc:`DeprecationWarning` to :class:`!LegacyInterpolation`, deprecated in
 the docstring since Python 3.2. Will be removed in Python 3.13. Use
 :class:`BasicInterpolation` or :class:`ExtendedInterpolation` instead.
 
@@ -1038,7 +1038,7 @@ Add optional parameter *dir_fd* in :func:`shutil.rmtree`.
 .. nonce: AixHW7
 .. section: Library
 
-:meth:`~unittest.TestProgram.usageExit` is marked deprecated, to be removed
+:meth:`~!unittest.TestProgram.usageExit` is marked deprecated, to be removed
 in 3.13.
 
 ..
@@ -1599,7 +1599,7 @@ Call the public :func:`sys.get_asyncgen_hooks` and
 .. section: C API
 
 Remove private functions ``_PySys_GetObjectId()`` and
-``_PySys_SetObjectId()``. Patch by Dong-hee Na.
+``_PySys_SetObjectId()``. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0b1.rst b/Misc/NEWS.d/3.11.0b1.rst
index d8c2ec0a799711..a4cdda2cafdb43 100644
--- a/Misc/NEWS.d/3.11.0b1.rst
+++ b/Misc/NEWS.d/3.11.0b1.rst
@@ -185,7 +185,7 @@ functions leave the current exception unchanged. Patch by Victor Stinner.
 .. section: Core and Builtins
 
 Fix a minor memory leak at exit: release the memory of the
-:class:`generic_alias_iterator` type. Patch by Dong-hee Na.
+:class:`generic_alias_iterator` type. Patch by Donghee Na.
 
 ..
 
@@ -796,7 +796,7 @@ Patch by Kabir Kwatra.
 .. nonce: roapI2
 .. section: Library
 
-The :mod:`mailcap` module is now deprecated and will be removed in Python
+The :mod:`!mailcap` module is now deprecated and will be removed in Python
 3.13. See :pep:`594` for the rationale and the :mod:`mimetypes` module for
 an alternative. Patch by Victor Stinner.
 
@@ -817,8 +817,8 @@ it is ever needed and document the existing mechanism for ``posix_spawn()``.
 .. nonce: HFtERN
 .. section: Library
 
-Fix :data:`signal.NSIG` value on FreeBSD to accept signal numbers greater
-than 32, like :data:`signal.SIGRTMIN` and :data:`signal.SIGRTMAX`. Patch by
+Fix :const:`signal.NSIG` value on FreeBSD to accept signal numbers greater
+than 32, like :const:`signal.SIGRTMIN` and :const:`signal.SIGRTMAX`. Patch by
 Victor Stinner.
 
 ..
@@ -1799,7 +1799,7 @@ The documentation now lists which members of C structs are part of the
 .. nonce: FIVe9I
 .. section: Documentation
 
-All docstrings in code snippets are now wrapped into :func:`PyDoc_STR` to
+All docstrings in code snippets are now wrapped into :c:macro:`PyDoc_STR` to
 follow the guideline of `PEP 7's Documentation Strings paragraph
 <https://www.python.org/dev/peps/pep-0007/#documentation-strings>`_. Patch
 by Oleg Iarygin.
@@ -2028,8 +2028,8 @@ https://gitlab.com/warsaw/pynche
 .. nonce: 3mQ54t
 .. section: C API
 
-Deprecate the C functions: :c:func:`PySys_SetArgv`,
-:c:func:`PySys_SetArgvEx`, :c:func:`PySys_SetPath`. Patch by Victor Stinner.
+Deprecate the C functions: :c:func:`!PySys_SetArgv`,
+:c:func:`!PySys_SetArgvEx`, :c:func:`!PySys_SetPath`. Patch by Victor Stinner.
 
 ..
 
@@ -2068,9 +2068,9 @@ casts when the Python C API is used in C++. Patch by Victor Stinner.
 .. nonce: Cx-95G
 .. section: C API
 
-Mark functions as deprecated by :pep:`623`: :c:func:`PyUnicode_AS_DATA`,
-:c:func:`PyUnicode_AS_UNICODE`, :c:func:`PyUnicode_GET_DATA_SIZE`,
-:c:func:`PyUnicode_GET_SIZE`. Patch by Victor Stinner.
+Mark functions as deprecated by :pep:`623`: :c:func:`!PyUnicode_AS_DATA`,
+:c:func:`!PyUnicode_AS_UNICODE`, :c:func:`!PyUnicode_GET_DATA_SIZE`,
+:c:func:`!PyUnicode_GET_SIZE`. Patch by Victor Stinner.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a1.rst b/Misc/NEWS.d/3.12.0a1.rst
index ff5064f89d8dd8..633738de92bef7 100644
--- a/Misc/NEWS.d/3.12.0a1.rst
+++ b/Misc/NEWS.d/3.12.0a1.rst
@@ -82,7 +82,7 @@ the test failed).
 .. nonce: eOBh8M
 .. section: Core and Builtins
 
-Suppress ImportError for invalid query for help() command. Patch by Dong-hee
+Suppress ImportError for invalid query for help() command. Patch by Donghee
 Na.
 
 ..
@@ -164,7 +164,7 @@ to calculate those doing pointer arithmetic.
 .. section: Core and Builtins
 
 :func:`os.sched_yield` now release the GIL while calling sched_yield(2).
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -203,7 +203,7 @@ the interpreter.
 .. nonce: LYAWlE
 .. section: Core and Builtins
 
-Bugfix: :func:`PyFunction_GetAnnotations` should return a borrowed
+Bugfix: :c:func:`PyFunction_GetAnnotations` should return a borrowed
 reference. It was returning a new reference.
 
 ..
@@ -465,7 +465,7 @@ Remove dead code from ``CALL_FUNCTION_EX`` opcode.
 .. nonce: VE8-zf
 .. section: Core and Builtins
 
-:class:`memoryview` now supports half-floats. Patch by Dong-hee Na and
+:class:`memoryview` now supports half-floats. Patch by Donghee Na and
 Antoine Pitrou.
 
 ..
@@ -736,7 +736,7 @@ new types.
 .. nonce: 6eoc8k
 .. section: Core and Builtins
 
-On WASI :data:`~errno.ENOTCAPABLE` is now mapped to :exc:`PermissionError`.
+On WASI :const:`~errno.ENOTCAPABLE` is now mapped to :exc:`PermissionError`.
 The :mod:`errno` modules exposes the new error number. ``getpath.py`` now
 ignores :exc:`PermissionError` when it cannot open landmark files
 ``pybuilddir.txt`` and ``pyenv.cfg``.
@@ -857,7 +857,7 @@ code objects could be "deduplicated" during compilation.
 .. section: Core and Builtins
 
 Reduce allocation size of :class:`list` from :meth:`str.split` and
-:meth:`str.rsplit`. Patch by Dong-hee Na and Inada Naoki.
+:meth:`str.rsplit`. Patch by Donghee Na and Inada Naoki.
 
 ..
 
@@ -2649,8 +2649,8 @@ calling any callbacks. Patch by Kumar Aditya.
 .. nonce: i807-g
 .. section: Library
 
-Fail gracefully if :data:`~errno.EPERM` or :data:`~errno.ENOSYS` is raised
-when loading :mod:`crypt` methods. This may happen when trying to load
+Fail gracefully if :const:`~errno.EPERM` or :const:`~errno.ENOSYS` is raised
+when loading :mod:`!crypt` methods. This may happen when trying to load
 ``MD5`` on a Linux kernel with :abbr:`FIPS (Federal Information Processing
 Standard)` enabled.
 
@@ -2698,8 +2698,8 @@ Upgrade bundled pip to 22.2.
 .. nonce: VT34A5
 .. section: Library
 
-Fix check for existence of :data:`os.EFD_CLOEXEC`, :data:`os.EFD_NONBLOCK`
-and :data:`os.EFD_SEMAPHORE` flags on older kernel versions where these
+Fix check for existence of :const:`os.EFD_CLOEXEC`, :const:`os.EFD_NONBLOCK`
+and :const:`os.EFD_SEMAPHORE` flags on older kernel versions where these
 flags are not present. Patch by Kumar Aditya.
 
 ..
@@ -2752,7 +2752,7 @@ by Shin-myoung-serp.
 .. section: Library
 
 Add deprecation warning for enum ``member.member`` access (e.g.
-``Color.RED.BLUE``).
+``Color.RED.BLUE``). Remove ``EnumMeta.__getattr__``.
 
 ..
 
@@ -3553,7 +3553,7 @@ Make :class:`multiprocessing.Pool` raise an exception if
 .. nonce: HY0Uzj
 .. section: Library
 
-Add :data:`os.PIDFD_NONBLOCK` flag to open a file descriptor for a process
+Add :const:`os.PIDFD_NONBLOCK` flag to open a file descriptor for a process
 with :func:`os.pidfd_open` in non-blocking mode. Patch by Kumar Aditya.
 
 ..
@@ -3742,7 +3742,7 @@ Fix :func:`ast.unparse` when ``ImportFrom.level`` is None
 
 Now :func:`~dis.dis` and :func:`~dis.get_instructions` handle operand values
 for instructions prefixed by ``EXTENDED_ARG_QUICK``. Patch by Sam Gross and
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -4171,7 +4171,7 @@ Add an index_pages parameter to support using non-default index page names.
 .. nonce: qtT3CE
 .. section: Library
 
-Drop support for :class:`bytes` on :attr:`sys.path`.
+Drop support for :class:`bytes` on :data:`sys.path`.
 
 ..
 
@@ -5004,7 +5004,7 @@ Patch by Illia Volochii and Adam Turner.
 .. section: Build
 
 Fix the build process of clang compiler for :program:`_bootstrap_python` if
-LTO optimization is applied. Patch by Matthias Görgens and Dong-hee Na.
+LTO optimization is applied. Patch by Matthias Görgens and Donghee Na.
 
 ..
 
@@ -5024,7 +5024,7 @@ LTO optimization is applied. Patch by Matthias Görgens and Dong-hee Na.
 .. section: Build
 
 CPython now uses the ThinLTO option as the default policy if the Clang
-compiler accepts the flag. Patch by Dong-hee Na.
+compiler accepts the flag. Patch by Donghee Na.
 
 ..
 
@@ -5308,7 +5308,7 @@ parameter. Patch by Kumar Aditya.
 .. section: Build
 
 Python now always use the ``%zu`` and ``%zd`` printf formats to format a
-``size_t`` or ``Py_ssize_t`` number. Building Python 3.12 requires a C11
+:c:type:`size_t` or ``Py_ssize_t`` number. Building Python 3.12 requires a C11
 compiler, so these printf formats are now always supported. Patch by Victor
 Stinner.
 
@@ -5350,7 +5350,7 @@ in a virtual environment.
 .. nonce: FbHZuS
 .. section: Windows
 
-Fix :file:`py.exe` launcher handling of ``-V:<company>/`` option when
+Fix :file:`py.exe` launcher handling of :samp:`-V:{<company>}/` option when
 default preferences have been set in environment variables or configuration
 files.
 
@@ -5400,7 +5400,7 @@ Update libffi to 3.4.3
 .. nonce: kV4K_1
 .. section: Windows
 
-Fixes a potential buffer overrun in :mod:`msilib`.
+Fixes a potential buffer overrun in :mod:`!msilib`.
 
 ..
 
@@ -5856,8 +5856,8 @@ Configuration for the :ref:`integer string conversion length limitation
 
 Extensions classes that set ``tp_dictoffset`` and ``tp_weaklistoffset`` lose
 the support for multiple inheritance, but are now safe. Extension classes
-should use :const:`Py_TPFLAGS_MANAGED_DICT` and
-:const:`Py_TPFLAGS_MANAGED_WEAKREF` instead.
+should use :c:macro:`Py_TPFLAGS_MANAGED_DICT` and
+:c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead.
 
 ..
 
@@ -5898,7 +5898,7 @@ Support C extensions using managed dictionaries by setting the
 .. nonce: QoDHEu
 .. section: C API
 
-API for implementing vectorcall (:c:data:`Py_TPFLAGS_HAVE_VECTORCALL`,
+API for implementing vectorcall (:c:macro:`Py_TPFLAGS_HAVE_VECTORCALL`,
 :c:func:`PyVectorcall_NARGS` and :c:func:`PyVectorcall_Call`) was added to
 the limited API and stable ABI.
 
@@ -5920,12 +5920,12 @@ Philip Georgi.
 .. nonce: -DdGEy
 .. section: C API
 
-The :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
+The :c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
 when the class's :py:meth:`~object.__call__` method is reassigned. This
 makes vectorcall safe to use with mutable types (i.e. heap types without the
 :const:`immutable <Py_TPFLAGS_IMMUTABLETYPE>` flag). Mutable types that do
 not override :c:member:`~PyTypeObject.tp_call` now inherit the
-:const:`Py_TPFLAGS_HAVE_VECTORCALL` flag.
+:c:macro:`Py_TPFLAGS_HAVE_VECTORCALL` flag.
 
 ..
 
@@ -5934,7 +5934,7 @@ not override :c:member:`~PyTypeObject.tp_call` now inherit the
 .. nonce: aiRSgr
 .. section: C API
 
-Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
+Creating :c:macro:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
 bases is deprecated and is planned to be disabled in Python 3.14.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a2.rst b/Misc/NEWS.d/3.12.0a2.rst
index d871384903e7cd..1a04ed473f329d 100644
--- a/Misc/NEWS.d/3.12.0a2.rst
+++ b/Misc/NEWS.d/3.12.0a2.rst
@@ -8,7 +8,7 @@ The IDNA codec decoder used on DNS hostnames by :mod:`socket` or
 :mod:`asyncio` related name resolution functions no longer involves a
 quadratic algorithm. This prevents a potential CPU denial of service if an
 out-of-spec excessive length hostname involving bidirectional characters
-were decoded. Some protocols such as :mod:`urllib` http ``3xx`` redirects
+were decoded. Some protocols such as :mod:`urllib` http :samp:`3{xx}` redirects
 potentially allow for an attacker to supply such a name.
 
 Individual labels within an IDNA encoded DNS name will now raise an error
@@ -111,7 +111,7 @@ back to alternative names ("python<MAJOR>", "python<MAJOR>.<MINOR>").
 .. section: Core and Builtins
 
 Update :mod:`faulthandler` to emit an error message with the proper
-unexpected signal number. Patch by Dong-hee Na.
+unexpected signal number. Patch by Donghee Na.
 
 ..
 
@@ -279,7 +279,7 @@ Fix source locations of :keyword:`match` sub-patterns.
 
 Added the methods :c:func:`PyObject_Vectorcall` and
 :c:func:`PyObject_VectorcallMethod` to the :ref:`Limited API <stable>` along
-with the auxiliary macro constant :const:`PY_VECTORCALL_ARGUMENTS_OFFSET`.
+with the auxiliary macro constant :c:macro:`PY_VECTORCALL_ARGUMENTS_OFFSET`.
 
 The availability of these functions enables more efficient :PEP:`590` vector
 calls from binary extension modules that avoid argument boxing/unboxing
@@ -397,7 +397,7 @@ longobject.c to speed up some operations.
 .. nonce: nSGEkG
 .. section: Core and Builtins
 
-Expose :data:`~socket.ETH_P_ALL` and some of the :ref:`ETHERTYPE_* constants
+Expose :const:`~socket.ETH_P_ALL` and some of the :ref:`ETHERTYPE_* constants
 <socket-ethernet-types>` in :mod:`socket`. Patch by Noam Cohen.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a3.rst b/Misc/NEWS.d/3.12.0a3.rst
index 3d1e43350d136e..ce128fd5f80c77 100644
--- a/Misc/NEWS.d/3.12.0a3.rst
+++ b/Misc/NEWS.d/3.12.0a3.rst
@@ -9,7 +9,7 @@ within a garbage request to be printed to the stderr server log.
 
 This is done by changing the :mod:`http.server`
 :class:`BaseHTTPRequestHandler` ``.log_message`` method to replace control
-characters with a ``\xHH`` hex escape before printing.
+characters with a :samp:`\\x{HH}` hex escape before printing.
 
 ..
 
@@ -153,7 +153,7 @@ to specialize attribute accesses on types that haven't had
 .. section: Core and Builtins
 
 Allow some features of :mod:`syslog` to the main interpreter only. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -505,7 +505,7 @@ return True from this method; now they correctly return False.
 .. nonce: ZoOY5G
 .. section: Library
 
-Add an :data:`~ssl.OP_ENABLE_KTLS` option for enabling the use of the kernel
+Add an :const:`~ssl.OP_ENABLE_KTLS` option for enabling the use of the kernel
 TLS (kTLS). Patch by Illia Volochii.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a4.rst b/Misc/NEWS.d/3.12.0a4.rst
index dd26d4d964d6b7..75246f3f13503e 100644
--- a/Misc/NEWS.d/3.12.0a4.rst
+++ b/Misc/NEWS.d/3.12.0a4.rst
@@ -23,10 +23,10 @@ Remove :opcode:`UNARY_POSITIVE`, :opcode:`ASYNC_GEN_WRAP` and
 .. nonce: D7H6j4
 .. section: Core and Builtins
 
-Add new :opcode:`CALL_INSTRINSIC_1` instruction. Remove
+Add new :opcode:`CALL_INTRINSIC_1` instruction. Remove
 :opcode:`IMPORT_STAR`, :opcode:`PRINT_EXPR` and
 :opcode:`STOPITERATION_ERROR`, replacing them with the
-:opcode:`CALL_INSTRINSIC_1` instruction.
+:opcode:`CALL_INTRINSIC_1` instruction.
 
 ..
 
@@ -317,7 +317,7 @@ Improve performance of ``list.pop`` for small lists.
 .. nonce: yP4Na0
 .. section: Core and Builtins
 
-Add :data:`ssl.OP_LEGACY_SERVER_CONNECT`
+Add :const:`ssl.OP_LEGACY_SERVER_CONNECT`
 
 ..
 
@@ -356,7 +356,7 @@ arrays.
 .. nonce: mHRdQn
 .. section: Library
 
-Add :data:`socket.IP_PKTINFO` constant.
+Add :const:`socket.IP_PKTINFO` constant.
 
 ..
 
@@ -676,7 +676,7 @@ parameter names in the C implementation. Patch by Alex Waygood.
 .. section: Library
 
 Update :exc:`~urllib.error.HTTPError` to be initialized properly, even if
-the ``fp`` is ``None``. Patch by Dong-hee Na.
+the ``fp`` is ``None``. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a5.rst b/Misc/NEWS.d/3.12.0a5.rst
index f6f8de46cf70d9..8cf90b0e9cde46 100644
--- a/Misc/NEWS.d/3.12.0a5.rst
+++ b/Misc/NEWS.d/3.12.0a5.rst
@@ -38,7 +38,7 @@ would get out of sync, causing inconsistent behavior and crashes.
 .. section: Core and Builtins
 
 Fix wrong lineno in exception message on :keyword:`continue` or
-:keyword:`break` which are not in a loop. Patch by Dong-hee Na.
+:keyword:`break` which are not in a loop. Patch by Donghee Na.
 
 ..
 
@@ -48,7 +48,7 @@ Fix wrong lineno in exception message on :keyword:`continue` or
 .. section: Core and Builtins
 
 Fix :func:`~unicodedata.is_normalized` to properly handle the UCD 3.2.0
-cases. Patch by Dong-hee Na.
+cases. Patch by Donghee Na.
 
 ..
 
@@ -507,7 +507,7 @@ inheritance.
 .. section: Build
 
 Update BOLT configration not to use depreacted usage of ``--split
-functions``. Patch by Dong-hee Na.
+functions``. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a6.rst b/Misc/NEWS.d/3.12.0a6.rst
index f6beb5b7ec3dbc..5bd600cd8b6fc0 100644
--- a/Misc/NEWS.d/3.12.0a6.rst
+++ b/Misc/NEWS.d/3.12.0a6.rst
@@ -220,7 +220,7 @@ access of ``builtins.__dict__`` keys mutates the iter object.
 .. section: Core and Builtins
 
 Update :mod:`tracemalloc` to handle presize of object properly. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -303,7 +303,7 @@ Kim.
 .. nonce: Vxz0Mr
 .. section: Library
 
-Add :data:`mmap.MAP_ALIGNED_SUPER` FreeBSD and :data:`mmap.MAP_CONCEAL`
+Add :const:`mmap.MAP_ALIGNED_SUPER` FreeBSD and :const:`mmap.MAP_CONCEAL`
 OpenBSD constants to :mod:`mmap`. Patch by Yeojin Kim.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a7.rst b/Misc/NEWS.d/3.12.0a7.rst
index 8f078e50823a00..1ef81747558857 100644
--- a/Misc/NEWS.d/3.12.0a7.rst
+++ b/Misc/NEWS.d/3.12.0a7.rst
@@ -605,7 +605,7 @@ reported unauthenticated EOFs (i.e. without close_notify) as a clean
 TLS-level EOF. It now raises :exc:`~ssl.SSLEOFError`, matching the behavior
 in previous versions of OpenSSL. The :attr:`~ssl.SSLContext.options`
 attribute on :class:`~ssl.SSLContext` also no longer includes
-:data:`~ssl.OP_IGNORE_UNEXPECTED_EOF` by default. This option may be set to
+:const:`~ssl.OP_IGNORE_UNEXPECTED_EOF` by default. This option may be set to
 specify the previous OpenSSL 3.0 behavior.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0b1.rst b/Misc/NEWS.d/3.12.0b1.rst
new file mode 100644
index 00000000000000..0944dfd0e90ab9
--- /dev/null
+++ b/Misc/NEWS.d/3.12.0b1.rst
@@ -0,0 +1,2402 @@
+.. date: 2023-05-02-17-56-32
+.. gh-issue: 99889
+.. nonce: l664SU
+.. release date: 2023-05-22
+.. section: Security
+
+Fixed a security in flaw in :func:`!uu.decode` that could allow for directory
+traversal based on the input if no ``out_file`` was specified.
+
+..
+
+.. date: 2023-05-01-15-03-25
+.. gh-issue: 104049
+.. nonce: b01Y3g
+.. section: Security
+
+Do not expose the local on-disk location in directory indexes produced by
+:class:`http.client.SimpleHTTPRequestHandler`.
+
+..
+
+.. date: 2023-04-17-14-38-12
+.. gh-issue: 99108
+.. nonce: 720lG8
+.. section: Security
+
+Upgrade built-in :mod:`hashlib` SHA3 implementation to a verified
+implementation from the ``HACL*`` project.  Used when OpenSSL is not present
+or lacks SHA3.
+
+..
+
+.. date: 2023-03-07-20-59-17
+.. gh-issue: 102153
+.. nonce: 14CLSZ
+.. section: Security
+
+:func:`urllib.parse.urlsplit` now strips leading C0 control and space
+characters following the specification for URLs defined by WHATWG in
+response to CVE-2023-24329. Patch by Illia Volochii.
+
+..
+
+.. date: 2023-05-20-23-08-48
+.. gh-issue: 102856
+.. nonce: Knv9WT
+.. section: Core and Builtins
+
+Implement PEP 701 changes in the :mod:`tokenize` module. Patch by Marta
+Gómez Macías and Pablo Galindo Salgado
+
+..
+
+.. date: 2023-05-18-13-00-21
+.. gh-issue: 104615
+.. nonce: h_rtw2
+.. section: Core and Builtins
+
+Fix wrong ordering of assignments in code like ``a, a = x, y``. Contributed
+by Carl Meyer.
+
+..
+
+.. date: 2023-05-16-19-17-48
+.. gh-issue: 104572
+.. nonce: eBZQYS
+.. section: Core and Builtins
+
+Improve syntax error message for invalid constructs in :pep:`695` contexts
+and in annotations when ``from __future__ import annotations`` is active.
+
+..
+
+.. date: 2023-05-14-18-56-54
+.. gh-issue: 104482
+.. nonce: yaQsv8
+.. section: Core and Builtins
+
+Fix three error handling bugs in ast.c's validation of pattern matching
+statements.
+
+..
+
+.. date: 2023-05-12-13-30-04
+.. gh-issue: 102818
+.. nonce: rnv1mH
+.. section: Core and Builtins
+
+Do not add a frame to the traceback in the ``sys.setprofile`` and
+``sys.settrace`` trampoline functions. This ensures that frames are not
+duplicated if an exception is raised in the callback function, and ensures
+that frames are not omitted if a C callback is used and that does not add
+the frame.
+
+..
+
+.. date: 2023-05-11-15-56-07
+.. gh-issue: 104405
+.. nonce: tXV5fn
+.. section: Core and Builtins
+
+Fix an issue where some :term:`bytecode` instructions could ignore
+:pep:`523` when "inlining" calls.
+
+..
+
+.. date: 2023-05-10-20-52-29
+.. gh-issue: 103082
+.. nonce: y3LG5Q
+.. section: Core and Builtins
+
+Change behavior of ``sys.monitoring.events.LINE`` events in
+``sys.monitoring``: Line events now occur when a new line is reached
+dynamically, instead of using a static approximation, as before. This makes
+the behavior very similar to that of "line" events in ``sys.settrace``. This
+should ease porting of tools from 3.11 to 3.12.
+
+..
+
+.. date: 2023-05-08-10-34-55
+.. gh-issue: 104263
+.. nonce: ctHWI8
+.. section: Core and Builtins
+
+Fix ``float("nan")`` to produce a quiet NaN on platforms (like MIPS) where
+the meaning of the signalling / quiet bit is inverted from its usual
+meaning. Also introduce a new macro ``Py_INFINITY`` matching C99's
+``INFINITY``, and refactor internals to rely on C99's ``NAN`` and
+``INFINITY`` macros instead of hard-coding bit patterns for infinities and
+NaNs. Thanks Sebastian Berg.
+
+..
+
+.. date: 2023-05-05-13-18-56
+.. gh-issue: 99113
+.. nonce: hT1ajK
+.. section: Core and Builtins
+
+Multi-phase init extension modules may now indicate that they support
+running in subinterpreters that have their own GIL.  This is done by using
+``Py_MOD_PER_INTERPRETER_GIL_SUPPORTED`` as the value for the
+``Py_mod_multiple_interpreters`` module def slot.  Otherwise the module, by
+default, cannot be imported in such subinterpreters.  (This does not affect
+the main interpreter or subinterpreters that do not have their own GIL.)  In
+addition to the isolation that multi-phase init already normally requires,
+support for per-interpreter GIL involves one additional constraint:
+thread-safety.  If the module has external (linked) dependencies and those
+libraries have any state that isn't thread-safe then the module must do the
+additional work to add thread-safety.  This should be an uncommon case.
+
+..
+
+.. date: 2023-05-05-12-14-47
+.. gh-issue: 99113
+.. nonce: -RAdnv
+.. section: Core and Builtins
+
+The GIL is now (optionally) per-interpreter.  This is the fundamental change
+for PEP 684.  This is all made possible by virtue of the isolated state of
+each interpreter in the process.  The behavior of the main interpreter
+remains unchanged.  Likewise, interpreters created using
+``Py_NewInterpreter()`` are not affected.  To get an interpreter with its
+own GIL, call ``Py_NewInterpreterFromConfig()``.
+
+..
+
+.. date: 2023-05-03-17-46-47
+.. gh-issue: 104108
+.. nonce: GOxAYt
+.. section: Core and Builtins
+
+Multi-phase init extension modules may now indicate whether or not they
+actually support multiple interpreters.  By default such modules are
+expected to support use in multiple interpreters.  In the uncommon case that
+one does not, it may use the new ``Py_mod_multiple_interpreters`` module def
+slot.  A value of ``0`` means the module does not support them. ``1`` means
+it does.  The default is ``1``.
+
+..
+
+.. date: 2023-05-02-18-29-49
+.. gh-issue: 104142
+.. nonce: _5Et6I
+.. section: Core and Builtins
+
+Fix an issue where :class:`list` or :class:`tuple` repetition could fail to
+respect :pep:`683`.
+
+..
+
+.. date: 2023-05-01-21-05-47
+.. gh-issue: 104078
+.. nonce: vRaBsU
+.. section: Core and Builtins
+
+Improve the performance of :c:func:`PyObject_HasAttrString`
+
+..
+
+.. date: 2023-05-01-14-48-29
+.. gh-issue: 104066
+.. nonce: pzoUZQ
+.. section: Core and Builtins
+
+Improve the performance of :func:`hasattr` for module objects with a missing
+attribute.
+
+..
+
+.. date: 2023-05-01-14-10-38
+.. gh-issue: 104028
+.. nonce: dxfh13
+.. section: Core and Builtins
+
+Reduce object creation while calling callback function from gc. Patch by
+Donghee Na.
+
+..
+
+.. date: 2023-05-01-12-03-52
+.. gh-issue: 104018
+.. nonce: PFxGS4
+.. section: Core and Builtins
+
+Disallow the "z" format specifier in %-format of bytes objects.
+
+..
+
+.. date: 2023-05-01-08-08-05
+.. gh-issue: 102213
+.. nonce: nfH-4C
+.. section: Core and Builtins
+
+Fix performance loss when accessing an object's attributes with
+``__getattr__``  defined.
+
+..
+
+.. date: 2023-04-26-17-56-18
+.. gh-issue: 103895
+.. nonce: ESB6tn
+.. section: Core and Builtins
+
+Improve handling of edge cases in showing ``Exception.__notes__``. Ensures
+that the messages always end with a newline and that string/bytes are not
+exploded over multiple lines. Patch by Carey Metcalfe.
+
+..
+
+.. date: 2023-04-26-16-26-35
+.. gh-issue: 103907
+.. nonce: kiONZQ
+.. section: Core and Builtins
+
+Don't modify the refcounts of known immortal objects (:const:`True`,
+:const:`False`, and :const:`None`) in the main interpreter loop.
+
+..
+
+.. date: 2023-04-26-15-14-23
+.. gh-issue: 103899
+.. nonce: 1pqKPF
+.. section: Core and Builtins
+
+Provide a helpful hint in the :exc:`TypeError` message when accidentally
+calling a :term:`module` object that has a callable attribute of the same
+name (such as :func:`dis.dis` or :class:`datetime.datetime`).
+
+..
+
+.. date: 2023-04-25-20-56-01
+.. gh-issue: 103845
+.. nonce: V7NYFn
+.. section: Core and Builtins
+
+Remove both line and instruction instrumentation before adding new ones for
+monitoring, to avoid newly added instrumentation being removed immediately.
+
+..
+
+.. date: 2023-04-25-08-43-11
+.. gh-issue: 103763
+.. nonce: ZLBZk1
+.. section: Core and Builtins
+
+Implement :pep:`695`, adding syntactic support for generic classes, generic
+functions, and type aliases.
+
+A new ``type X = ...`` syntax is added for type aliases, which resolves at
+runtime to an instance of the new class ``typing.TypeAliasType``. The value
+is lazily evaluated and is accessible through the ``.__value__`` attribute.
+This is implemented as a new AST node ``ast.TypeAlias``.
+
+New syntax (``class X[T]: ...``, ``def func[T](): ...``) is added for
+defining generic functions and classes. This is implemented as a new
+``type_params`` attribute on the AST nodes for classes and functions. This
+node holds instances of the new AST classes ``ast.TypeVar``,
+``ast.ParamSpec``, and ``ast.TypeVarTuple``.
+
+``typing.TypeVar``, ``typing.ParamSpec``, ``typing.ParamSpecArgs``,
+``typing.ParamSpecKwargs``, ``typing.TypeVarTuple``, and ``typing.Generic``
+are now implemented in C rather than Python.
+
+There are new bytecode instructions ``LOAD_LOCALS``,
+``LOAD_CLASSDICT_OR_GLOBAL``, and ``LOAD_CLASSDICT_OR_DEREF`` to support
+correct resolution of names in class namespaces.
+
+Patch by Eric Traut, Larry Hastings, and Jelle Zijlstra.
+
+..
+
+.. date: 2023-04-24-21-47-38
+.. gh-issue: 103801
+.. nonce: WaBanq
+.. section: Core and Builtins
+
+Adds three minor linting fixes to the wasm module caught that were caught by
+ruff.
+
+..
+
+.. date: 2023-04-24-14-38-16
+.. gh-issue: 103793
+.. nonce: kqoH6Q
+.. section: Core and Builtins
+
+Optimized asyncio Task creation by deferring expensive string formatting
+(task name generation) from Task creation to the first time ``get_name`` is
+called. This makes asyncio benchmarks up to 5% faster.
+
+..
+
+.. date: 2023-04-21-17-03-14
+.. gh-issue: 102310
+.. nonce: anLjDx
+.. section: Core and Builtins
+
+Change the error range for invalid bytes literals.
+
+..
+
+.. date: 2023-04-21-16-12-41
+.. gh-issue: 103590
+.. nonce: 7DHDOE
+.. section: Core and Builtins
+
+Do not wrap a single exception raised from a ``try-except*`` construct in an
+:exc:`ExceptionGroup`.
+
+..
+
+.. date: 2023-04-20-16-17-51
+.. gh-issue: 103650
+.. nonce: K1MFXR
+.. section: Core and Builtins
+
+Change the perf map format to remove the '0x' prefix from the addresses
+
+..
+
+.. date: 2023-04-17-16-00-32
+.. gh-issue: 102856
+.. nonce: UunJ7y
+.. section: Core and Builtins
+
+Implement the required C tokenizer changes for PEP 701. Patch by Pablo
+Galindo Salgado, Lysandros Nikolaou, Batuhan Taskaya, Marta Gómez Macías and
+sunmy2019.
+
+..
+
+.. date: 2023-04-16-14-38-39
+.. gh-issue: 100530
+.. nonce: OR6-sn
+.. section: Core and Builtins
+
+Clarify the error message raised when the called part of a class pattern
+isn't actually a class.
+
+..
+
+.. date: 2023-04-14-22-35-23
+.. gh-issue: 101517
+.. nonce: 5EqM-S
+.. section: Core and Builtins
+
+Fix bug in line numbers of instructions emitted for :keyword:`except*
+<except_star>`.
+
+..
+
+.. date: 2023-04-13-00-58-55
+.. gh-issue: 103492
+.. nonce: P4k0Ay
+.. section: Core and Builtins
+
+Clarify :exc:`SyntaxWarning` with literal ``is`` comparison by specifying
+which literal is problematic, since comparisons using ``is`` with e.g. None
+and bool literals are idiomatic.
+
+..
+
+.. date: 2023-04-12-20-22-03
+.. gh-issue: 87729
+.. nonce: 99A7UO
+.. section: Core and Builtins
+
+Add :opcode:`LOAD_SUPER_ATTR` (and a specialization for
+``super().method()``) to speed up ``super().method()`` and ``super().attr``.
+This makes ``super().method()`` roughly 2.3x faster and brings it within 20%
+of the performance of a simple method call. Patch by Vladimir Matveev and
+Carl Meyer.
+
+..
+
+.. date: 2023-04-12-20-18-51
+.. gh-issue: 103488
+.. nonce: vYvlHD
+.. section: Core and Builtins
+
+Change the internal offset distinguishing yield and return target addresses,
+so that the instruction pointer is correct for exception handling and other
+stack unwinding.
+
+..
+
+.. date: 2023-04-12-19-55-24
+.. gh-issue: 82012
+.. nonce: FlcJAh
+.. section: Core and Builtins
+
+The bitwise inversion operator (``~``) on bool is deprecated. It returns the
+bitwise inversion of the underlying ``int`` representation such that
+``bool(~True) == True``, which can be confusing. Use ``not`` for logical
+negation of bools. In the rare case that you really need the bitwise
+inversion of the underlying ``int``, convert to int explicitly ``~int(x)``.
+
+..
+
+.. date: 2023-04-09-22-21-57
+.. gh-issue: 77757
+.. nonce: _Ow-u2
+.. section: Core and Builtins
+
+Exceptions raised in a typeobject's ``__set_name__`` method are no longer
+wrapped by a :exc:`RuntimeError`. Context information is added to the
+exception as a :pep:`678` note.
+
+..
+
+.. date: 2023-04-09-04-30-02
+.. gh-issue: 103333
+.. nonce: gKOetS
+.. section: Core and Builtins
+
+:exc:`AttributeError` now retains the ``name`` attribute when pickled and
+unpickled.
+
+..
+
+.. date: 2023-04-08-17-13-07
+.. gh-issue: 103242
+.. nonce: ysI1b3
+.. section: Core and Builtins
+
+Migrate :meth:`~ssl.SSLContext.set_ecdh_curve` method not to use deprecated
+OpenSSL APIs. Patch by Donghee Na.
+
+..
+
+.. date: 2023-04-07-12-18-41
+.. gh-issue: 103323
+.. nonce: 9802br
+.. section: Core and Builtins
+
+We've replaced our use of ``_PyRuntime.tstate_current`` with a thread-local
+variable.  This is a fairly low-level implementation detail, and there
+should be no change in behavior.
+
+..
+
+.. date: 2023-04-02-22-14-57
+.. gh-issue: 84436
+.. nonce: hvMgwF
+.. section: Core and Builtins
+
+The implementation of PEP-683 which adds Immortal Objects by using a fixed
+reference count that skips reference counting to make objects truly
+immutable.
+
+..
+
+.. date: 2023-04-01-00-46-31
+.. gh-issue: 102700
+.. nonce: 493NB4
+.. section: Core and Builtins
+
+Allow built-in modules to be submodules. This allows submodules to be
+statically linked into a CPython binary.
+
+..
+
+.. date: 2023-03-31-17-24-03
+.. gh-issue: 103082
+.. nonce: isRUcV
+.. section: Core and Builtins
+
+Implement :pep:`669` Low Impact Monitoring for CPython.
+
+..
+
+.. date: 2023-03-25-23-24-38
+.. gh-issue: 88691
+.. nonce: 2SWBd1
+.. section: Core and Builtins
+
+Reduce the number of inline :opcode:`CACHE` entries for :opcode:`CALL`.
+
+..
+
+.. date: 2023-03-07-17-37-00
+.. gh-issue: 102500
+.. nonce: RUSQhz
+.. section: Core and Builtins
+
+Make the buffer protocol accessible in Python code using the new
+``__buffer__`` and ``__release_buffer__`` magic methods. See :pep:`688` for
+details. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-01-30-15-40-29
+.. gh-issue: 97933
+.. nonce: nUlp3r
+.. section: Core and Builtins
+
+:pep:`709`: inline list, dict and set comprehensions to improve performance
+and reduce bytecode size.
+
+..
+
+.. date: 2022-11-08-12-36-25
+.. gh-issue: 99184
+.. nonce: KIaqzz
+.. section: Core and Builtins
+
+Bypass instance attribute access of ``__name__`` in ``repr`` of
+:class:`weakref.ref`.
+
+..
+
+.. date: 2022-10-06-23-32-11
+.. gh-issue: 98003
+.. nonce: xWE0Yu
+.. section: Core and Builtins
+
+Complex function calls are now faster and consume no C stack space.
+
+..
+
+.. bpo: 39610
+.. date: 2020-02-11-15-54-40
+.. nonce: fvgsCl
+.. section: Core and Builtins
+
+``len()`` for 0-dimensional :class:`memoryview`` objects (such as
+``memoryview(ctypes.c_uint8(42))``) now raises a :exc:`TypeError`.
+Previously this returned ``1``, which was not consistent with ``mem_0d[0]``
+raising an :exc:`IndexError``.
+
+..
+
+.. bpo: 31821
+.. date: 2019-12-01-12-58-31
+.. nonce: 1FNmwk
+.. section: Core and Builtins
+
+Fix :func:`!pause_reading` to work when called from :func:`!connection_made`
+in :mod:`asyncio`.
+
+..
+
+.. date: 2023-05-17-21-01-48
+.. gh-issue: 104600
+.. nonce: E6CK35
+.. section: Library
+
+:func:`functools.update_wrapper` now sets the ``__type_params__`` attribute
+(added by :pep:`695`).
+
+..
+
+.. date: 2023-05-17-20-03-01
+.. gh-issue: 104340
+.. nonce: kp_XmX
+.. section: Library
+
+When an ``asyncio`` pipe protocol loses its connection due to an error, and
+the caller doesn't await ``wait_closed()`` on the corresponding
+``StreamWriter``, don't log a warning about an exception that was never
+retrieved. After all, according to the ``StreamWriter.close()`` docs, the
+``wait_closed()`` call is optional ("not mandatory").
+
+..
+
+.. date: 2023-05-17-16-58-23
+.. gh-issue: 104555
+.. nonce: 5rb5oM
+.. section: Library
+
+Fix issue where an :func:`issubclass` check comparing a class ``X`` against
+a :func:`runtime-checkable protocol <typing.runtime_checkable>` ``Y`` with
+non-callable members would not cause :exc:`TypeError` to be raised if an
+:func:`isinstance` call had previously been made comparing an instance of
+``X`` to ``Y``. This issue was present in edge cases on Python 3.11, but
+became more prominent in 3.12 due to some unrelated changes that were made
+to runtime-checkable protocols. Patch by Alex Waygood.
+
+..
+
+.. date: 2023-05-17-08-01-36
+.. gh-issue: 104372
+.. nonce: jpoWs6
+.. section: Library
+
+Refactored the ``_posixsubprocess`` internals to avoid Python C API usage
+between fork and exec when marking ``pass_fds=`` file descriptors
+inheritable.
+
+..
+
+.. date: 2023-05-17-03-14-07
+.. gh-issue: 104484
+.. nonce: y6KxL6
+.. section: Library
+
+Added *case_sensitive* argument to :meth:`pathlib.PurePath.match`
+
+..
+
+.. date: 2023-05-16-11-02-44
+.. gh-issue: 75367
+.. nonce: qLWR35
+.. section: Library
+
+Fix data descriptor detection in  :func:`inspect.getattr_static`.
+
+..
+
+.. date: 2023-05-16-10-07-16
+.. gh-issue: 104536
+.. nonce: hFWD8f
+.. section: Library
+
+Fix a race condition in the internal :mod:`multiprocessing.process` cleanup
+logic that could manifest as an unintended ``AttributeError`` when calling
+``process.close()``.
+
+..
+
+.. date: 2023-05-12-19-29-28
+.. gh-issue: 103857
+.. nonce: 0IzSxr
+.. section: Library
+
+Update datetime deprecations' stracktrace to point to the calling line
+
+..
+
+.. date: 2023-05-11-21-32-18
+.. gh-issue: 101520
+.. nonce: l9MjRE
+.. section: Library
+
+Move the core functionality of the ``tracemalloc`` module in the ``Python/``
+folder, leaving just the module wrapper in ``Modules/``.
+
+..
+
+.. date: 2023-05-11-07-50-00
+.. gh-issue: 104392
+.. nonce: YSllzt
+.. section: Library
+
+Remove undocumented and unused ``_paramspec_tvars`` attribute from some
+classes in :mod:`typing`.
+
+..
+
+.. date: 2023-05-11-01-07-42
+.. gh-issue: 102613
+.. nonce: uMsokt
+.. section: Library
+
+Fix issue where :meth:`pathlib.Path.glob` raised :exc:`RecursionError` when
+walking deep directory trees.
+
+..
+
+.. date: 2023-05-10-19-33-36
+.. gh-issue: 103000
+.. nonce: j0KSfD
+.. section: Library
+
+Improve performance of :func:`dataclasses.asdict` for the common case where
+*dict_factory* is ``dict``. Patch by David C Ellis.
+
+..
+
+.. date: 2023-05-09-18-46-24
+.. gh-issue: 104301
+.. nonce: gNnbId
+.. section: Library
+
+Allow leading whitespace in disambiguated statements in :mod:`pdb`.
+
+..
+
+.. date: 2023-05-08-23-01-59
+.. gh-issue: 104139
+.. nonce: 83Tnt-
+.. section: Library
+
+Teach :func:`urllib.parse.unsplit` to retain the ``"//"`` when assembling
+``itms-services://?action=generate-bugs`` style `Apple Platform Deployment
+<https://support.apple.com/en-gb/guide/deployment/depce7cefc4d/web>`_ URLs.
+
+..
+
+.. date: 2023-05-08-20-57-17
+.. gh-issue: 104307
+.. nonce: DSB93G
+.. section: Library
+
+:func:`socket.getnameinfo` now releases the GIL while contacting the DNS
+server
+
+..
+
+.. date: 2023-05-08-15-50-59
+.. gh-issue: 104310
+.. nonce: fXVSPY
+.. section: Library
+
+Users may now use ``importlib.util.allowing_all_extensions()`` (a context
+manager) to temporarily disable the strict compatibility checks for
+importing extension modules in subinterpreters.
+
+..
+
+.. date: 2023-05-08-15-39-00
+.. gh-issue: 87695
+.. nonce: f6iO7v
+.. section: Library
+
+Fix issue where :meth:`pathlib.Path.glob` raised :exc:`OSError` when it
+encountered a symlink to an overly long path.
+
+..
+
+.. date: 2023-05-07-19-56-45
+.. gh-issue: 104265
+.. nonce: fVblry
+.. section: Library
+
+Prevent possible crash by disallowing instantiation of the
+:class:`!_csv.Reader` and :class:`!_csv.Writer` types. The regression was
+introduced in 3.10.0a4 with PR 23224 (:issue:`14935`). Patch by Radislav
+Chugunov.
+
+..
+
+.. date: 2023-05-06-20-37-46
+.. gh-issue: 102613
+.. nonce: QZG9iX
+.. section: Library
+
+Improve performance of :meth:`pathlib.Path.glob` when expanding recursive
+wildcards ("``**``") by merging adjacent wildcards and de-duplicating
+results only when necessary.
+
+..
+
+.. date: 2023-05-05-18-52-22
+.. gh-issue: 65772
+.. nonce: w5P5Wv
+.. section: Library
+
+Remove unneeded comments and code in turtle.py.
+
+..
+
+.. date: 2023-05-03-19-22-24
+.. gh-issue: 90208
+.. nonce: tI00da
+.. section: Library
+
+Fixed issue where :meth:`pathlib.Path.glob` returned incomplete results when
+it encountered a :exc:`PermissionError`. This method now suppresses all
+:exc:`OSError` exceptions, except those raised from calling
+:meth:`~pathlib.Path.is_dir` on the top-level path.
+
+..
+
+.. date: 2023-05-03-16-51-53
+.. gh-issue: 104144
+.. nonce: 653Q0P
+.. section: Library
+
+Optimize :class:`asyncio.TaskGroup` when using
+:func:`asyncio.eager_task_factory`. Skip scheduling a done callback if a
+TaskGroup task completes eagerly.
+
+..
+
+.. date: 2023-05-03-16-50-24
+.. gh-issue: 104144
+.. nonce: yNkjL8
+.. section: Library
+
+Optimize :func:`asyncio.gather` when using
+:func:`asyncio.eager_task_factory` to complete eagerly if all fututres
+completed eagerly. Avoid scheduling done callbacks for futures that complete
+eagerly.
+
+..
+
+.. date: 2023-05-03-03-14-33
+.. gh-issue: 104114
+.. nonce: RG26RD
+.. section: Library
+
+Fix issue where :meth:`pathlib.Path.glob` returns paths using the case of
+non-wildcard segments for corresponding path segments, rather than the real
+filesystem case.
+
+..
+
+.. date: 2023-05-02-21-05-30
+.. gh-issue: 104104
+.. nonce: 9tjplT
+.. section: Library
+
+Improve performance of :meth:`pathlib.Path.glob` by using
+:const:`re.IGNORECASE` to implement case-insensitive matching.
+
+..
+
+.. date: 2023-05-02-20-43-03
+.. gh-issue: 104102
+.. nonce: vgSdEJ
+.. section: Library
+
+Improve performance of :meth:`pathlib.Path.glob` when evaluating patterns
+that contain ``'../'`` segments.
+
+..
+
+.. date: 2023-05-02-04-49-45
+.. gh-issue: 103822
+.. nonce: m0QdAO
+.. section: Library
+
+Update the return type of ``weekday`` to the newly added Day attribute
+
+..
+
+.. date: 2023-05-01-19-10-05
+.. gh-issue: 103629
+.. nonce: 81bpZz
+.. section: Library
+
+Update the ``repr`` of :class:`typing.Unpack` according to :pep:`692`.
+
+..
+
+.. date: 2023-05-01-17-58-28
+.. gh-issue: 103963
+.. nonce: XWlHx7
+.. section: Library
+
+Make :mod:`dis` display the names of the args for
+:opcode:`CALL_INTRINSIC_*`.
+
+..
+
+.. date: 2023-05-01-16-43-28
+.. gh-issue: 104035
+.. nonce: MrJBw8
+.. section: Library
+
+Do not ignore user-defined ``__getstate__`` and ``__setstate__`` methods for
+slotted frozen dataclasses.
+
+..
+
+.. date: 2023-04-29-18-23-16
+.. gh-issue: 103987
+.. nonce: sRgALL
+.. section: Library
+
+In :mod:`mmap`, fix several bugs that could lead to access to memory-mapped
+files after they have been invalidated.
+
+..
+
+.. date: 2023-04-28-19-08-50
+.. gh-issue: 103977
+.. nonce: msF70A
+.. section: Library
+
+Improve import time of :mod:`platform` module.
+
+..
+
+.. date: 2023-04-28-18-04-23
+.. gh-issue: 88773
+.. nonce: xXCNJw
+.. section: Library
+
+Added :func:`turtle.teleport` to the :mod:`turtle` module to move a turtle
+to a new point without tracing a line, visible or invisible.  Patch by Liam
+Gersten.
+
+..
+
+.. date: 2023-04-27-20-03-08
+.. gh-issue: 103935
+.. nonce: Uaf2M0
+.. section: Library
+
+Use :func:`io.open_code` for files to be executed instead of raw
+:func:`open`
+
+..
+
+.. date: 2023-04-27-18-46-31
+.. gh-issue: 68968
+.. nonce: E3tnhy
+.. section: Library
+
+Fixed garbled output of :meth:`~unittest.TestCase.assertEqual` when an input
+lacks final newline.
+
+..
+
+.. date: 2023-04-27-00-45-41
+.. gh-issue: 100370
+.. nonce: MgZ3KY
+.. section: Library
+
+Fix potential :exc:`OverflowError` in :meth:`sqlite3.Connection.blobopen`
+for 32-bit builds. Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-04-27-00-05-32
+.. gh-issue: 102628
+.. nonce: X230E-
+.. section: Library
+
+Substitute CTRL-D with CTRL-Z in :mod:`sqlite3` CLI banner when running on
+Windows.
+
+..
+
+.. date: 2023-04-26-18-12-13
+.. gh-issue: 103636
+.. nonce: -KvCgO
+.. section: Library
+
+Module-level attributes ``January`` and ``February`` are deprecated from
+:mod:`calendar`.
+
+..
+
+.. date: 2023-04-26-15-14-36
+.. gh-issue: 103583
+.. nonce: iCMDFt
+.. section: Library
+
+Isolate :mod:`!_multibytecodec` and codecs extension modules. Patches by
+Erlend E. Aasland.
+
+..
+
+.. date: 2023-04-26-09-54-25
+.. gh-issue: 103848
+.. nonce: aDSnpR
+.. section: Library
+
+Add checks to ensure that ``[`` bracketed ``]`` hosts found by
+:func:`urllib.parse.urlsplit` are of IPv6 or IPvFuture format.
+
+..
+
+.. date: 2023-04-26-09-38-47
+.. gh-issue: 103872
+.. nonce: 8LBsDz
+.. section: Library
+
+Update the bundled copy of pip to version 23.1.2.
+
+..
+
+.. date: 2023-04-25-22-59-06
+.. gh-issue: 99944
+.. nonce: pst8iT
+.. section: Library
+
+Make :mod:`dis` display the value of oparg of :opcode:`KW_NAMES`.
+
+..
+
+.. date: 2023-04-25-22-06-00
+.. gh-issue: 74940
+.. nonce: TOacQ9
+.. section: Library
+
+The C.UTF-8 locale is no longer converted to en_US.UTF-8, enabling the use
+of UTF-8 encoding on systems which have no locales installed.
+
+..
+
+.. date: 2023-04-25-19-58-13
+.. gh-issue: 103861
+.. nonce: JeozgD
+.. section: Library
+
+Fix ``zipfile.Zipfile`` creating invalid zip files when ``force_zip64`` was
+used to add files to them. Patch by Carey Metcalfe.
+
+..
+
+.. date: 2023-04-25-17-03-18
+.. gh-issue: 103857
+.. nonce: Mr2Cak
+.. section: Library
+
+Deprecated :meth:`datetime.datetime.utcnow` and
+:meth:`datetime.datetime.utcfromtimestamp`. (Patch by Paul Ganssle)
+
+..
+
+.. date: 2023-04-25-16-31-00
+.. gh-issue: 103839
+.. nonce: tpyLhI
+.. section: Library
+
+Avoid compilation error due to tommath.h not being found when building
+Tkinter against Tcl 8.7 built with bundled libtommath.
+
+..
+
+.. date: 2023-04-24-23-07-56
+.. gh-issue: 103791
+.. nonce: bBPWdS
+.. section: Library
+
+:class:`contextlib.suppress` now supports suppressing exceptions raised as
+part of an :exc:`ExceptionGroup`. If other exceptions exist on the group,
+they are re-raised in a group that does not contain the suppressed
+exceptions.
+
+..
+
+.. date: 2023-04-24-16-00-28
+.. gh-issue: 90750
+.. nonce: da0Xi8
+.. section: Library
+
+Use :meth:`datetime.datetime.fromisocalendar` in the implementation of
+:meth:`datetime.datetime.strptime`, which should now accept only valid ISO
+dates. (Patch by Paul Ganssle)
+
+..
+
+.. date: 2023-04-24-00-34-23
+.. gh-issue: 103685
+.. nonce: U14jBM
+.. section: Library
+
+Prepare :meth:`tkinter.Menu.index` for Tk 8.7 so that it does not raise
+``TclError: expected integer but got ""`` when it should return ``None``.
+
+..
+
+.. date: 2023-04-23-15-39-17
+.. gh-issue: 81403
+.. nonce: zVz9Td
+.. section: Library
+
+:class:`urllib.request.CacheFTPHandler` no longer raises :class:`URLError`
+if a cached FTP instance is reused. ftplib's endtransfer method calls
+voidresp to drain the connection to handle FTP instance reuse properly.
+
+..
+
+.. date: 2023-04-22-22-37-39
+.. gh-issue: 103699
+.. nonce: NizCjc
+.. section: Library
+
+Add ``__orig_bases__`` to non-generic TypedDicts, call-based TypedDicts, and
+call-based NamedTuples. Other TypedDicts and NamedTuples already had the
+attribute.
+
+..
+
+.. date: 2023-04-22-21-34-13
+.. gh-issue: 103693
+.. nonce: SBtuLQ
+.. section: Library
+
+Add convenience variable feature to :mod:`pdb`
+
+..
+
+.. date: 2023-04-22-12-30-10
+.. gh-issue: 92248
+.. nonce: NcVTKR
+.. section: Library
+
+Deprecate ``type``, ``choices``, and ``metavar`` parameters of
+``argparse.BooleanOptionalAction``.
+
+..
+
+.. date: 2023-04-22-11-20-27
+.. gh-issue: 89415
+.. nonce: YHk760
+.. section: Library
+
+Add :mod:`socket` constants for source-specific multicast. Patch by Reese
+Hyde.
+
+..
+
+.. date: 2023-04-22-02-41-06
+.. gh-issue: 103673
+.. nonce: oE7S_k
+.. section: Library
+
+:mod:`socketserver` gains ``ForkingUnixStreamServer`` and
+``ForkingUnixDatagramServer`` classes. Patch by Jay Berry.
+
+..
+
+.. date: 2023-04-21-10-25-39
+.. gh-issue: 103636
+.. nonce: YK6NEa
+.. section: Library
+
+Added Enum for months and days in the calendar module.
+
+..
+
+.. date: 2023-04-19-16-08-53
+.. gh-issue: 84976
+.. nonce: HwbzlD
+.. section: Library
+
+Create a new ``Lib/_pydatetime.py`` file that defines the Python version of
+the ``datetime`` module, and make ``datetime`` import the contents of the
+new library only if the C implementation is missing. Currently, the full
+Python implementation is defined and then deleted if the C implementation is
+not available, slowing down ``import datetime`` unnecessarily.
+
+..
+
+.. date: 2023-04-17-14-47-28
+.. gh-issue: 103596
+.. nonce: ME1y3_
+.. section: Library
+
+Attributes/methods are no longer shadowed by same-named enum members,
+although they may be shadowed by enum.property's.
+
+..
+
+.. date: 2023-04-16-19-48-21
+.. gh-issue: 103584
+.. nonce: 3mBTuM
+.. section: Library
+
+Updated ``importlib.metadata`` with changes from ``importlib_metadata`` 5.2
+through 6.5.0, including: Support ``installed-files.txt`` for
+``Distribution.files`` when present. ``PackageMetadata`` now stipulates an
+additional ``get`` method allowing for easy querying of metadata keys that
+may not be present. ``packages_distributions`` now honors packages and
+modules with Python modules that not ``.py`` sources (e.g. ``.pyc``,
+``.so``). Expand protocol for ``PackageMetadata.get_all`` to match the
+upstream implementation of ``email.message.Message.get_all`` in
+python/typeshed#9620. Deprecated use of ``Distribution`` without defining
+abstract methods. Deprecated expectation that
+``PackageMetadata.__getitem__`` will return ``None`` for missing keys. In
+the future, it will raise a ``KeyError``.
+
+..
+
+.. date: 2023-04-16-18-29-04
+.. gh-issue: 103578
+.. nonce: fly1wc
+.. section: Library
+
+Fixed a bug where :mod:`pdb` crashes when reading source file with different
+encoding by replacing :func:`io.open` with :func:`io.open_code`. The new
+method would also call into the hook set by :c:func:`PyFile_SetOpenCodeHook`.
+
+..
+
+.. date: 2023-04-15-12-19-14
+.. gh-issue: 103556
+.. nonce: TEf-2m
+.. section: Library
+
+Now creating :class:`inspect.Signature` objects with positional-only
+parameter with a default followed by a positional-or-keyword parameter
+without one is impossible.
+
+..
+
+.. date: 2023-04-15-11-21-38
+.. gh-issue: 103559
+.. nonce: a9rYHG
+.. section: Library
+
+Update the bundled copy of pip to version 23.1.1.
+
+..
+
+.. date: 2023-04-14-21-16-05
+.. gh-issue: 103548
+.. nonce: lagdpp
+.. section: Library
+
+Improve performance of :meth:`pathlib.Path.absolute` and
+:meth:`~pathlib.Path.cwd` by joining paths only when necessary. Also improve
+performance of :meth:`pathlib.PurePath.is_absolute` on Posix by skipping
+path parsing and normalization.
+
+..
+
+.. date: 2023-04-14-21-12-32
+.. gh-issue: 103538
+.. nonce: M4FK_v
+.. section: Library
+
+Remove ``_tkinter`` module code guarded by definition of the ``TK_AQUA``
+macro which was only needed for Tk 8.4.7 or earlier and was never actually
+defined by any build system or documented for manual use.
+
+..
+
+.. date: 2023-04-14-06-32-54
+.. gh-issue: 103533
+.. nonce: n_AfcS
+.. section: Library
+
+Update :mod:`cProfile` to use PEP 669 API
+
+..
+
+.. date: 2023-04-13-19-43-15
+.. gh-issue: 103525
+.. nonce: uY4VYg
+.. section: Library
+
+Fix misleading exception message when mixed ``str`` and ``bytes`` arguments
+are supplied to :class:`pathlib.PurePath` and :class:`~pathlib.Path`.
+
+..
+
+.. date: 2023-04-13-13-17-47
+.. gh-issue: 103489
+.. nonce: ZSZgmu
+.. section: Library
+
+Add :meth:`~sqlite3.Connection.getconfig` and
+:meth:`~sqlite3.Connection.setconfig` to :class:`~sqlite3.Connection` to
+make configuration changes to a database connection. Patch by Erlend E.
+Aasland.
+
+..
+
+.. date: 2023-04-12-17-59-55
+.. gh-issue: 103365
+.. nonce: UBEE0U
+.. section: Library
+
+Set default Flag boundary to ``STRICT`` and fix bitwise operations.
+
+..
+
+.. date: 2023-04-12-13-04-16
+.. gh-issue: 103472
+.. nonce: C6bOHv
+.. section: Library
+
+Avoid a potential :exc:`ResourceWarning` in
+:class:`http.client.HTTPConnection` by closing the proxy / tunnel's CONNECT
+response explicitly.
+
+..
+
+.. date: 2023-04-12-06-00-02
+.. gh-issue: 103462
+.. nonce: w6yBlM
+.. section: Library
+
+Fixed an issue with using :meth:`~asyncio.WriteTransport.writelines` in
+:mod:`asyncio` to send very large payloads that exceed the amount of data
+that can be written in one call to :meth:`socket.socket.send` or
+:meth:`socket.socket.sendmsg`, resulting in the remaining buffer being left
+unwritten.
+
+..
+
+.. date: 2023-04-11-21-38-39
+.. gh-issue: 103449
+.. nonce: -nxmhb
+.. section: Library
+
+Fix a bug in doc string generation in :func:`dataclasses.dataclass`.
+
+..
+
+.. date: 2023-04-09-06-59-36
+.. gh-issue: 103092
+.. nonce: vskbro
+.. section: Library
+
+Isolate :mod:`!_collections` (apply :pep:`687`). Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-04-08-01-33-12
+.. gh-issue: 103357
+.. nonce: vjin28
+.. section: Library
+
+Added support for :class:`logging.Formatter` ``defaults`` parameter to
+:func:`logging.config.dictConfig` and :func:`logging.config.fileConfig`.
+Patch by Bar Harel.
+
+..
+
+.. date: 2023-04-08-00-48-40
+.. gh-issue: 103092
+.. nonce: 5EFts0
+.. section: Library
+
+Adapt the :mod:`winreg` extension module to :pep:`687`.
+
+..
+
+.. date: 2023-04-07-15-15-40
+.. gh-issue: 74690
+.. nonce: un84hh
+.. section: Library
+
+The performance of :func:`isinstance` checks against
+:func:`runtime-checkable protocols <typing.runtime_checkable>` has been
+considerably improved for protocols that only have a few members. To achieve
+this improvement, several internal implementation details of the
+:mod:`typing` module have been refactored, including
+``typing._ProtocolMeta.__instancecheck__``,
+``typing._is_callable_members_only``, and ``typing._get_protocol_attrs``.
+Patches by Alex Waygood.
+
+..
+
+.. date: 2023-04-07-15-09-26
+.. gh-issue: 74690
+.. nonce: 0f886b
+.. section: Library
+
+The members of a runtime-checkable protocol are now considered "frozen" at
+runtime as soon as the class has been created. See :ref:`"What's new in
+Python 3.12" <whatsnew-typing-py312>` for more details.
+
+..
+
+.. date: 2023-04-06-17-28-36
+.. gh-issue: 103256
+.. nonce: 1syxfs
+.. section: Library
+
+Fixed a bug that caused :mod:`hmac` to raise an exception when the requested
+hash algorithm was not available in OpenSSL despite being available
+separately as part of ``hashlib`` itself.  It now falls back properly to the
+built-in. This could happen when, for example, your OpenSSL does not include
+SHA3 support and you want to compute ``hmac.digest(b'K', b'M',
+'sha3_256')``.
+
+..
+
+.. date: 2023-04-06-16-55-51
+.. gh-issue: 102778
+.. nonce: BWeAmE
+.. section: Library
+
+Support ``sys.last_exc`` in :mod:`idlelib`.
+
+..
+
+.. date: 2023-04-06-04-35-59
+.. gh-issue: 103285
+.. nonce: rCZ9-G
+.. section: Library
+
+Improve performance of :func:`ast.get_source_segment`.
+
+..
+
+.. date: 2023-04-05-01-28-53
+.. gh-issue: 103225
+.. nonce: QD3JVU
+.. section: Library
+
+Fix a bug in :mod:`pdb` when displaying line numbers of module-level source
+code.
+
+..
+
+.. date: 2023-04-04-21-44-25
+.. gh-issue: 103092
+.. nonce: Dz0_Xn
+.. section: Library
+
+Adapt the :mod:`msvcrt` extension module to :pep:`687`.
+
+..
+
+.. date: 2023-04-04-21-27-51
+.. gh-issue: 103092
+.. nonce: 7s7Bzf
+.. section: Library
+
+Adapt the :mod:`winsound` extension module to :pep:`687`.
+
+..
+
+.. date: 2023-04-04-12-43-38
+.. gh-issue: 93910
+.. nonce: jurMzv
+.. section: Library
+
+Remove deprecation of enum ``memmber.member`` access.
+
+..
+
+.. date: 2023-04-03-23-44-34
+.. gh-issue: 102978
+.. nonce: gy9eVk
+.. section: Library
+
+Fixes :func:`unittest.mock.patch` not enforcing function signatures for
+methods decorated with ``@classmethod`` or ``@staticmethod`` when patch is
+called with ``autospec=True``.
+
+..
+
+.. date: 2023-04-03-23-43-12
+.. gh-issue: 103092
+.. nonce: 3xqk4y
+.. section: Library
+
+Isolate :mod:`!_socket` (apply :pep:`687`). Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-04-03-22-02-35
+.. gh-issue: 100479
+.. nonce: kNBjQm
+.. section: Library
+
+Add :meth:`pathlib.PurePath.with_segments`, which creates a path object from
+arguments. This method is called whenever a derivative path is created, such
+as from :attr:`pathlib.PurePath.parent`. Subclasses may override this method
+to share information between path objects.
+
+..
+
+.. date: 2023-04-03-21-08-53
+.. gh-issue: 103220
+.. nonce: OW_Bj5
+.. section: Library
+
+Fix issue where :func:`os.path.join` added a slash when joining onto an
+incomplete UNC drive with a trailing slash on Windows.
+
+..
+
+.. date: 2023-04-02-23-05-22
+.. gh-issue: 103204
+.. nonce: bbDmu0
+.. section: Library
+
+Fixes :mod:`http.server` accepting HTTP requests with HTTP version numbers
+preceded by '+', or '-', or with digit-separating '_' characters.  The
+length of the version numbers is also constrained.
+
+..
+
+.. date: 2023-04-02-22-04-26
+.. gh-issue: 75586
+.. nonce: 526iJm
+.. section: Library
+
+Fix various Windows-specific issues with ``shutil.which``.
+
+..
+
+.. date: 2023-04-02-17-51-08
+.. gh-issue: 103193
+.. nonce: xrZbM1
+.. section: Library
+
+Improve performance of :func:`inspect.getattr_static`. Patch by Alex
+Waygood.
+
+..
+
+.. date: 2023-04-01-23-01-31
+.. gh-issue: 103176
+.. nonce: FBsdxa
+.. section: Library
+
+:func:`sys._current_exceptions` now returns a mapping from thread-id to an
+exception instance, rather than to a ``(typ, exc, tb)`` tuple.
+
+..
+
+.. date: 2023-03-31-01-13-00
+.. gh-issue: 103143
+.. nonce: 6eMluy
+.. section: Library
+
+Polish the help messages and docstrings of :mod:`pdb`.
+
+..
+
+.. date: 2023-03-28-09-13-31
+.. gh-issue: 103015
+.. nonce: ETTfNf
+.. section: Library
+
+Add *entrypoint* keyword-only parameter to
+:meth:`sqlite3.Connection.load_extension`, for overriding the SQLite
+extension entry point. Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-03-24-20-49-48
+.. gh-issue: 103000
+.. nonce: 6eVNZI
+.. section: Library
+
+Improve performance of :func:`dataclasses.astuple` and
+:func:`dataclasses.asdict` in cases where the contents are common Python
+types.
+
+..
+
+.. date: 2023-03-23-15-24-38
+.. gh-issue: 102953
+.. nonce: YR4KaK
+.. section: Library
+
+The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`,
+have a new a *filter* argument that allows limiting tar features than may be
+surprising or dangerous, such as creating files outside the destination
+directory. See :ref:`tarfile-extraction-filter` for details.
+
+..
+
+.. date: 2023-03-15-12-18-07
+.. gh-issue: 97696
+.. nonce: DtnpIC
+.. section: Library
+
+Implemented an eager task factory in asyncio. When used as a task factory on
+an event loop, it performs eager execution of coroutines. Coroutines that
+are able to complete synchronously (e.g. return or raise without blocking)
+are returned immediately as a finished task, and the task is never scheduled
+to the event loop. If the coroutine blocks, the (pending) task is scheduled
+and returned.
+
+..
+
+.. date: 2023-03-15-00-37-43
+.. gh-issue: 81079
+.. nonce: heTAod
+.. section: Library
+
+Add *case_sensitive* keyword-only argument to :meth:`pathlib.Path.glob` and
+:meth:`~pathlib.Path.rglob`.
+
+..
+
+.. date: 2023-03-14-11-20-19
+.. gh-issue: 101819
+.. nonce: 0-h0it
+.. section: Library
+
+Isolate the :mod:`io` extension module by applying :pep:`687`. Patch by
+Kumar Aditya, Victor Stinner, and Erlend E. Aasland.
+
+..
+
+.. date: 2023-03-08-02-45-46
+.. gh-issue: 91896
+.. nonce: kgON_a
+.. section: Library
+
+Deprecate :class:`collections.abc.ByteString`
+
+..
+
+.. date: 2023-03-06-18-49-57
+.. gh-issue: 101362
+.. nonce: eSSy6L
+.. section: Library
+
+Speed up :class:`pathlib.Path` construction by omitting the path anchor from
+the internal list of path parts.
+
+..
+
+.. date: 2023-02-21-14-57-34
+.. gh-issue: 102114
+.. nonce: uUDQzb
+.. section: Library
+
+Functions in the :mod:`dis` module that accept a source code string as
+argument now print a more concise traceback when the string contains a
+syntax or indentation error.
+
+..
+
+.. date: 2023-02-19-12-37-08
+.. gh-issue: 62432
+.. nonce: GnBFIB
+.. section: Library
+
+The :mod:`unittest` runner will now exit with status code 5 if no tests were
+run. It is common for test runner misconfiguration to fail to find any
+tests, this should be an error.
+
+..
+
+.. date: 2023-02-17-21-14-40
+.. gh-issue: 78079
+.. nonce: z3Szr6
+.. section: Library
+
+Fix incorrect normalization of UNC device path roots, and partial UNC share
+path roots, in :class:`pathlib.PurePath`. Pathlib no longer appends a
+trailing slash to such paths.
+
+..
+
+.. date: 2023-02-11-21-18-10
+.. gh-issue: 85984
+.. nonce: nvzOD0
+.. section: Library
+
+Add :func:`tty.cfmakeraw` and :func:`tty.cfmakecbreak` to :mod:`tty` and
+modernize, the behavior of :func:`tty.setraw` and :func:`tty.setcbreak` to
+use POSIX.1-2017 Chapter 11 "General Terminal Interface" flag masks by
+default.
+
+..
+
+.. date: 2023-02-11-15-01-32
+.. gh-issue: 101688
+.. nonce: kwXmfM
+.. section: Library
+
+Implement :func:`types.get_original_bases` to provide further introspection
+for types.
+
+..
+
+.. date: 2023-02-09-22-24-34
+.. gh-issue: 101640
+.. nonce: oFuEpB
+.. section: Library
+
+:class:`argparse.ArgumentParser` now catches errors when writing messages,
+such as when :data:`sys.stderr` is ``None``. Patch by Oleg Iarygin.
+
+..
+
+.. date: 2023-02-06-16-45-18
+.. gh-issue: 83861
+.. nonce: mMbIU3
+.. section: Library
+
+Fix datetime.astimezone method return value when invoked on a naive datetime
+instance that represents local time falling in a timezone transition gap.
+PEP 495 requires that instances with fold=1 produce earlier times than those
+with fold=0 in this case.
+
+..
+
+.. date: 2023-01-22-14-53-12
+.. gh-issue: 89550
+.. nonce: c1U23f
+.. section: Library
+
+Decrease execution time of some :mod:`gzip` file writes by 15% by adding
+more appropriate buffering.
+
+..
+
+.. date: 2023-01-14-17-54-56
+.. gh-issue: 95299
+.. nonce: vUhpKz
+.. section: Library
+
+Remove the bundled setuptools wheel from ``ensurepip``, and stop installing
+setuptools in environments created by ``venv``.
+
+..
+
+.. date: 2022-11-10-16-26-47
+.. gh-issue: 99353
+.. nonce: DQFjnt
+.. section: Library
+
+Respect the :class:`http.client.HTTPConnection` ``.debuglevel`` flag in
+:class:`urllib.request.AbstractHTTPHandler` when its constructor parameter
+``debuglevel`` is not set. And do the same for ``*HTTPS*``.
+
+..
+
+.. date: 2022-10-21-17-20-57
+.. gh-issue: 98040
+.. nonce: 3btbmA
+.. section: Library
+
+Remove the long-deprecated ``imp`` module.
+
+..
+
+.. date: 2022-10-21-16-23-31
+.. gh-issue: 97850
+.. nonce: N46coo
+.. section: Library
+
+Deprecate :func:`pkgutil.find_loader` and :func:`pkgutil.get_loader` in
+favor of :func:`importlib.util.find_spec`.
+
+..
+
+.. date: 2022-10-20-14-03-58
+.. gh-issue: 94473
+.. nonce: pzGX73
+.. section: Library
+
+Flatten arguments in :meth:`tkinter.Canvas.coords`. It now accepts not only
+``x1, y1, x2, y2, ...`` and ``[x1, y1, x2, y2, ...]``, but also ``(x1, y1),
+(x2, y2), ...`` and ``[(x1, y1), (x2, y2), ...]``.
+
+..
+
+.. date: 2022-10-09-14-47-42
+.. gh-issue: 98040
+.. nonce: IN3qab
+.. section: Library
+
+Remove more deprecated importlib APIs: ``find_loader()``, ``find_module()``,
+``importlib.abc.Finder``, ``pkgutil.ImpImporter``, ``pkgutil.ImpLoader``.
+
+..
+
+.. date: 2022-09-07-09-32-07
+.. gh-issue: 96522
+.. nonce: t73oqp
+.. section: Library
+
+Fix potential deadlock in pty.spawn()
+
+..
+
+.. date: 2022-09-03-09-24-02
+.. gh-issue: 96534
+.. nonce: EU4Oxv
+.. section: Library
+
+Support divert(4) added in FreeBSD 14.
+
+..
+
+.. date: 2022-08-27-21-41-41
+.. gh-issue: 87474
+.. nonce: 9X-kxt
+.. section: Library
+
+Fix potential file descriptor leaks in :class:`subprocess.Popen`.
+
+..
+
+.. date: 2022-07-16-17-15-29
+.. gh-issue: 94906
+.. nonce: C4G8DG
+.. section: Library
+
+Support multiple steps in :func:`math.nextafter`. Patch by Shantanu Jain and
+Matthias Gorgens.
+
+..
+
+.. date: 2022-07-06-11-10-37
+.. gh-issue: 51574
+.. nonce: sveUeD
+.. section: Library
+
+Make :func:`tempfile.mkdtemp` return absolute paths when its *dir* parameter
+is relative.
+
+..
+
+.. date: 2022-07-03-23-13-28
+.. gh-issue: 94518
+.. nonce: 511Tbh
+.. section: Library
+
+Convert private :meth:`_posixsubprocess.fork_exec` to use Argument Clinic.
+
+..
+
+.. date: 2022-05-02-16-21-05
+.. gh-issue: 92184
+.. nonce: hneGVW
+.. section: Library
+
+When creating zip files using :mod:`zipfile`, ``os.altsep``, if not
+``None``, will always be treated as a path separator even when it is not
+``/``. Patch by Carey Metcalfe.
+
+..
+
+.. bpo: 46797
+.. date: 2022-02-19-14-19-34
+.. nonce: 6BXZX4
+.. section: Library
+
+Deprecation warnings are now emitted for :class:`!ast.Num`,
+:class:`!ast.Bytes`, :class:`!ast.Str`, :class:`!ast.NameConstant` and
+:class:`!ast.Ellipsis`. These have been documented as deprecated since
+Python 3.8, and will be removed in Python 3.14.
+
+..
+
+.. bpo: 44844
+.. date: 2021-12-03-23-00-56
+.. nonce: tvg2VY
+.. section: Library
+
+Enables :mod:`webbrowser` to detect and launch Microsoft Edge browser.
+
+..
+
+.. bpo: 45606
+.. date: 2021-11-19-23-37-18
+.. nonce: UW5XE1
+.. section: Library
+
+Fixed the bug in :meth:`pathlib.Path.glob` -- previously a dangling symlink
+would not be found by this method when the pattern is an exact match, but
+would be found when the pattern contains a wildcard or the recursive
+wildcard (``**``). With this change, a dangling symlink will be found in
+both cases.
+
+..
+
+.. bpo: 23041
+.. date: 2021-11-07-15-31-25
+.. nonce: 564i32
+.. section: Library
+
+Add :const:`~csv.QUOTE_STRINGS` and :const:`~csv.QUOTE_NOTNULL` to the suite
+of :mod:`csv` module quoting styles.
+
+..
+
+.. bpo: 24964
+.. date: 2021-05-16-14-28-30
+.. nonce: Oa5Ie_
+.. section: Library
+
+Added :meth:`http.client.HTTPConnection.get_proxy_response_headers` that
+provides access to the HTTP headers on a proxy server response to the
+``CONNECT`` request.
+
+..
+
+.. bpo: 17258
+.. date: 2020-05-25-12-42-36
+.. nonce: lf2554
+.. section: Library
+
+:mod:`multiprocessing` now supports stronger HMAC algorithms for
+inter-process connection authentication rather than only HMAC-MD5.
+
+..
+
+.. bpo: 39744
+.. date: 2020-02-25-00-43-22
+.. nonce: hgK689
+.. section: Library
+
+Make :func:`asyncio.subprocess.Process.communicate` close the subprocess's
+stdin even when called with ``input=None``.
+
+..
+
+.. bpo: 22708
+.. date: 2018-07-16-14-10-29
+.. nonce: 592iRR
+.. section: Library
+
+http.client CONNECT method tunnel improvements: Use HTTP 1.1 protocol; send
+a matching Host: header with CONNECT, if one is not provided; convert IDN
+domain names to Punycode. Patch by Michael Handler.
+
+..
+
+.. date: 2023-05-14-12-11-28
+.. gh-issue: 67056
+.. nonce: nVC2Rf
+.. section: Documentation
+
+Document that the effect of registering or unregistering an :mod:`atexit`
+cleanup function from within a registered cleanup function is undefined.
+
+..
+
+.. date: 2023-04-26-23-55-31
+.. gh-issue: 103629
+.. nonce: -0reqn
+.. section: Documentation
+
+Mention the new way of typing ``**kwargs`` with ``Unpack`` and ``TypedDict``
+introduced in :pep:`692`.
+
+..
+
+.. date: 2023-04-25-22-58-08
+.. gh-issue: 48241
+.. nonce: l1Gxxh
+.. section: Documentation
+
+Clarifying documentation about the url parameter to urllib.request.urlopen
+and urllib.request.Request needing to be encoded properly.
+
+..
+
+.. date: 2023-03-10-04-59-35
+.. gh-issue: 86094
+.. nonce: zOYdy8
+.. section: Documentation
+
+Add support for Unicode Path Extra Field in ZipFile. Patch by Yeojin Kim and
+Andrea Giudiceandrea
+
+..
+
+.. date: 2023-03-07-23-30-29
+.. gh-issue: 99202
+.. nonce: hhiAJF
+.. section: Documentation
+
+Fix extension type from documentation for compiling in C++20 mode
+
+..
+
+.. date: 2023-05-15-02-22-44
+.. gh-issue: 104494
+.. nonce: Bkrbfn
+.. section: Tests
+
+Update ``test_pack_configure_in`` and ``test_place_configure_in`` for
+changes to error message formatting in Tk 8.7.
+
+..
+
+.. date: 2023-05-14-03-00-00
+.. gh-issue: 104461
+.. nonce: Rmex11
+.. section: Tests
+
+Run test_configure_screen on X11 only, since the ``DISPLAY`` environment
+variable and ``-screen`` option for toplevels are not useful on Tk for Win32
+or Aqua.
+
+..
+
+.. date: 2023-04-25-12-19-37
+.. gh-issue: 86275
+.. nonce: -RoLIt
+.. section: Tests
+
+Added property-based tests to the :mod:`zoneinfo` tests, along with stubs
+for the ``hypothesis`` interface. (Patch by Paul Ganssle)
+
+..
+
+.. date: 2023-04-08-00-50-23
+.. gh-issue: 103329
+.. nonce: M38tqF
+.. section: Tests
+
+Regression tests for the behaviour of ``unittest.mock.PropertyMock`` were
+added.
+
+..
+
+.. date: 2023-03-17-22-00-47
+.. gh-issue: 102795
+.. nonce: z21EoC
+.. section: Tests
+
+fix use of poll in test_epoll's test_control_and_wait
+
+..
+
+.. date: 2022-11-06-18-42-38
+.. gh-issue: 75729
+.. nonce: uGYJrv
+.. section: Tests
+
+Fix the :func:`os.spawn* <os.spawnl>` tests failing on Windows when the
+working directory or interpreter path contains spaces.
+
+..
+
+.. date: 2023-05-20-16-09-59
+.. gh-issue: 101282
+.. nonce: FvRARb
+.. section: Build
+
+BOLT optimization is now applied to the libpython shared library if building
+a shared library. BOLT instrumentation and application settings can now be
+influenced via the ``BOLT_INSTRUMENT_FLAGS`` and ``BOLT_APPLY_FLAGS``
+configure variables.
+
+..
+
+.. date: 2023-05-15-09-34-08
+.. gh-issue: 99017
+.. nonce: nToOQu
+.. section: Build
+
+``PYTHON_FOR_REGEN`` now require Python 3.10 or newer.
+
+..
+
+.. date: 2023-05-14-19-00-19
+.. gh-issue: 104490
+.. nonce: 1tA4AF
+.. section: Build
+
+Define ``.PHONY`` / virtual make targets consistently and properly.
+
+..
+
+.. date: 2023-05-04-10-56-14
+.. gh-issue: 104106
+.. nonce: -W9BJS
+.. section: Build
+
+Add gcc fallback of mkfifoat/mknodat for macOS. Patch by Donghee Na.
+
+..
+
+.. date: 2023-04-14-10-24-37
+.. gh-issue: 103532
+.. nonce: H1djkd
+.. section: Build
+
+The ``TKINTER_PROTECT_LOADTK`` macro is no longer defined or used in the
+``_tkinter`` module.  It was previously only defined when building against
+Tk 8.4.13 and older, but Tk older than 8.5.12 has been unsupported since
+gh-issue-91152.
+
+..
+
+.. date: 2023-02-11-05-31-05
+.. gh-issue: 99069
+.. nonce: X4LDvY
+.. section: Build
+
+Extended workaround defining ``static_assert`` when missing from the libc
+headers to all clang and gcc builds. In particular, this fixes building on
+macOS <= 10.10.
+
+..
+
+.. date: 2022-12-18-07-24-44
+.. gh-issue: 100220
+.. nonce: BgSV7C
+.. section: Build
+
+Changed the default value of the ``SHELL`` Makefile variable from
+``/bin/sh`` to ``/bin/sh -e`` to ensure that complex recipes correctly fail
+after an error. Previously, ``make install`` could fail to install some
+files and yet return a successful result.
+
+..
+
+.. date: 2022-06-20-15-15-11
+.. gh-issue: 90656
+.. nonce: kFBbKe
+.. section: Build
+
+Add platform triplets for 64-bit LoongArch:
+
+* loongarch64-linux-gnusf
+* loongarch64-linux-gnuf32
+* loongarch64-linux-gnu
+
+Patch by Zhang Na.
+
+..
+
+.. date: 2023-05-18-22-46-03
+.. gh-issue: 104623
+.. nonce: HJZhm1
+.. section: Windows
+
+Update Windows installer to use SQLite 3.42.0.
+
+..
+
+.. date: 2023-04-24-15-51-11
+.. gh-issue: 82814
+.. nonce: GI3UkZ
+.. section: Windows
+
+Fix a potential ``[Errno 13] Permission denied`` when using
+:func:`shutil.copystat` within Windows Subsystem for Linux (WSL) on a
+mounted filesystem by adding ``errno.EACCES`` to the list of ignored errors
+within the internal implementation.
+
+..
+
+.. date: 2023-04-12-10-49-21
+.. gh-issue: 103088
+.. nonce: Yjj-qJ
+.. section: Windows
+
+Fix virtual environment :file:`activate` script having incorrect line
+endings for Cygwin.
+
+..
+
+.. date: 2023-04-11-09-22-22
+.. gh-issue: 103088
+.. nonce: 6AJEuR
+.. section: Windows
+
+Fixes venvs not working in bash on Windows across different disks
+
+..
+
+.. date: 2023-03-24-11-25-28
+.. gh-issue: 102997
+.. nonce: dredy2
+.. section: Windows
+
+Update Windows installer to use SQLite 3.41.2.
+
+..
+
+.. date: 2023-03-18-21-38-00
+.. gh-issue: 88013
+.. nonce: Z3loxC
+.. section: Windows
+
+Fixed a bug where :exc:`TypeError` was raised when calling
+:func:`ntpath.realpath` with a bytes parameter in some cases.
+
+..
+
+.. date: 2023-05-21-23-54-52
+.. gh-issue: 99834
+.. nonce: 6ANPts
+.. section: macOS
+
+Update macOS installer to Tcl/Tk 8.6.13.
+
+..
+
+.. date: 2023-05-18-22-31-49
+.. gh-issue: 104623
+.. nonce: 6h7Xfx
+.. section: macOS
+
+Update macOS installer to SQLite 3.42.0.
+
+..
+
+.. date: 2023-05-18-08-52-04
+.. gh-issue: 103545
+.. nonce: pi5k2N
+.. section: macOS
+
+Add ``os.PRIO_DARWIN_THREAD``, ``os.PRIO_DARWIN_PROCESS``,
+``os.PRIO_DARWIN_BG`` and ``os.PRIO_DARWIN_NONUI``. These can be used with
+``os.setpriority`` to run the process at a lower priority and make use of
+the efficiency cores on Apple Silicon systems.
+
+..
+
+.. date: 2023-05-04-21-47-59
+.. gh-issue: 104180
+.. nonce: lEJCwd
+.. section: macOS
+
+Support reading SOCKS proxy configuration from macOS System Configuration.
+Patch by Sam Schott.
+
+..
+
+.. date: 2023-04-24-18-37-48
+.. gh-issue: 60436
+.. nonce: in-IyF
+.. section: macOS
+
+update curses textbox to additionally handle backspace using the
+``curses.ascii.DEL`` key press.
+
+..
+
+.. date: 2023-03-24-11-20-47
+.. gh-issue: 102997
+.. nonce: ZgQkbq
+.. section: macOS
+
+Update macOS installer to SQLite 3.41.2.
+
+..
+
+.. date: 2023-05-17-17-32-21
+.. gh-issue: 104499
+.. nonce: hNeqV4
+.. section: IDLE
+
+Fix completions for Tk Aqua 8.7 (currently blank).
+
+..
+
+.. date: 2023-05-17-15-11-11
+.. gh-issue: 104496
+.. nonce: wjav-y
+.. section: IDLE
+
+About prints both tcl and tk versions if different (expected someday).
+
+..
+
+.. date: 2023-04-30-20-01-18
+.. gh-issue: 88496
+.. nonce: y65vUb
+.. section: IDLE
+
+Fix IDLE test hang on macOS.
+
+..
+
+.. date: 2023-05-11-15-12-11
+.. gh-issue: 104389
+.. nonce: EiOhB3
+.. section: Tools/Demos
+
+Argument Clinic C converters now accept the ``unused`` keyword, for wrapping
+a parameter with :c:macro:`Py_UNUSED`. Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-05-18-20-53-05
+.. gh-issue: 101291
+.. nonce: ZBh9aR
+.. section: C API
+
+Added unstable C API for extracting the value of "compact" integers:
+:c:func:`PyUnstable_Long_IsCompact` and
+:c:func:`PyUnstable_Long_CompactValue`.
+
+..
+
+.. date: 2023-05-02-21-05-54
+.. gh-issue: 104109
+.. nonce: 0tnDZV
+.. section: C API
+
+We've added ``Py_NewInterpreterFromConfig()`` and ``PyInterpreterConfig`` to
+the public C-API (but not the stable ABI; not yet at least).  The new
+function may be used to create a new interpreter with various features
+configured.  The function was added to support PEP 684 (per-interpreter
+GIL).
+
+..
+
+.. date: 2023-04-28-18-04-38
+.. gh-issue: 103968
+.. nonce: EnVvOx
+.. section: C API
+
+:c:func:`PyType_FromSpec` and its variants now allow creating classes whose
+metaclass overrides :c:member:`~PyTypeObject.tp_new`. The ``tp_new`` is
+ignored. This behavior is deprecated and will be disallowed in 3.14+. The
+new :c:func:`PyType_FromMetaclass` already disallows it.
+
+..
+
+.. date: 2023-04-24-10-31-59
+.. gh-issue: 103743
+.. nonce: 2xYA1K
+.. section: C API
+
+Add :c:func:`PyUnstable_Object_GC_NewWithExtraData` function that can be
+used to allocate additional memory after an object for data not managed by
+Python.
+
+..
+
+.. date: 2023-04-14-23-05-52
+.. gh-issue: 103295
+.. nonce: GRHY1Z
+.. section: C API
+
+Introduced :c:func:`PyUnstable_WritePerfMapEntry`,
+:c:func:`PyUnstable_PerfMapState_Init` and
+:c:func:`PyUnstable_PerfMapState_Fini`. These allow extension modules (JIT
+compilers in particular) to write to perf-map files in a thread safe manner.
+The :doc:`../howto/perf_profiling` also uses these APIs to write entries in
+the perf-map file.
+
+..
+
+.. date: 2023-04-13-16-54-00
+.. gh-issue: 103509
+.. nonce: A26Qu8
+.. section: C API
+
+Added C API for extending types whose instance memory layout is opaque:
+:c:member:`PyType_Spec.basicsize` can now be zero or negative,
+:c:func:`PyObject_GetTypeData` can be used to get subclass-specific data,
+and :c:macro:`Py_TPFLAGS_ITEMS_AT_END` can be used to safely extend
+variable-size objects. See :pep:`697` for details.
+
+..
+
+.. date: 2023-03-28-12-31-51
+.. gh-issue: 103091
+.. nonce: CzZyaZ
+.. section: C API
+
+Add a new C-API function to eagerly assign a version tag to a PyTypeObject:
+``PyUnstable_Type_AssignVersionTag()``.
+
+..
+
+.. date: 2023-02-09-23-09-29
+.. gh-issue: 101408
+.. nonce: _paFIF
+.. section: C API
+
+:c:func:`PyObject_GC_Resize` should calculate preheader size if needed.
+Patch by Donghee Na.
+
+..
+
+.. date: 2022-10-29-10-13-20
+.. gh-issue: 98836
+.. nonce: Cy5h_z
+.. section: C API
+
+Add support of more formatting options (left aligning, octals, uppercase
+hexadecimals, :c:type:`intmax_t`, :c:type:`ptrdiff_t`, :c:type:`wchar_t` C
+strings, variable width and precision) in :c:func:`PyUnicode_FromFormat` and
+:c:func:`PyUnicode_FromFormatV`.
+
+..
+
+.. date: 2022-09-15-15-21-34
+.. gh-issue: 96803
+.. nonce: ynBKIS
+.. section: C API
+
+Add unstable C-API functions to get the code object, lasti and line number
+from the internal ``_PyInterpreterFrame`` in the limited API. The functions
+are:
+
+* ``PyCodeObject * PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame)``
+* ``int PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame)``
+* ``int PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame)``
diff --git a/Misc/NEWS.d/3.13.0a1.rst b/Misc/NEWS.d/3.13.0a1.rst
new file mode 100644
index 00000000000000..102bddcee5c5c2
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0a1.rst
@@ -0,0 +1,6748 @@
+.. date: 2023-08-22-17-39-12
+.. gh-issue: 108310
+.. nonce: fVM3sg
+.. release date: 2023-10-13
+.. section: Security
+
+Fixed an issue where instances of :class:`ssl.SSLSocket` were vulnerable to
+a bypass of the TLS handshake and included protections (like certificate
+verification) and treating sent unencrypted data as if it were
+post-handshake TLS encrypted data.  Security issue reported as
+`CVE-2023-40217
+<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40217>`_ by Aapo
+Oksman. Patch by Gregory P. Smith.
+
+..
+
+.. date: 2023-08-05-03-51-05
+.. gh-issue: 107774
+.. nonce: VPjaTR
+.. section: Security
+
+PEP 669 specifies that ``sys.monitoring.register_callback`` will generate an
+audit event. Pre-releases of Python 3.12 did not generate the audit event.
+This is now fixed.
+
+..
+
+.. date: 2023-06-13-20-52-24
+.. gh-issue: 102988
+.. nonce: Kei7Vf
+.. section: Security
+
+Reverted the :mod:`email.utils` security improvement change released in
+3.12beta4 that unintentionally caused :mod:`email.utils.getaddresses` to
+fail to parse email addresses with a comma in the quoted name field. See
+:gh:`106669`.
+
+..
+
+.. date: 2023-05-24-09-29-08
+.. gh-issue: 99108
+.. nonce: hwS2cr
+.. section: Security
+
+Refresh our new HACL* built-in :mod:`hashlib` code from upstream. Built-in
+SHA2 should be faster and an issue with SHA3 on 32-bit platforms is fixed.
+
+..
+
+.. date: 2023-03-07-21-46-29
+.. gh-issue: 102509
+.. nonce: 5ouaH_
+.. section: Security
+
+Start initializing ``ob_digit`` during creation of :c:type:`PyLongObject`
+objects. Patch by Illia Volochii.
+
+..
+
+.. date: 2023-10-12-15-03-24
+.. gh-issue: 110782
+.. nonce: EqzIzi
+.. section: Core and Builtins
+
+Fix crash when :class:`typing.TypeVar` is constructed with a keyword
+argument. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-10-12-06-32-25
+.. gh-issue: 110752
+.. nonce: FYfI0h
+.. section: Core and Builtins
+
+Reset ``ceval.eval_breaker`` in :func:`interpreter_clear`
+
+..
+
+.. date: 2023-10-11-16-56-54
+.. gh-issue: 110721
+.. nonce: afcSsH
+.. section: Core and Builtins
+
+Use the :mod:`traceback` implementation for the default
+:c:func:`PyErr_Display` functionality. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-11-13-46-14
+.. gh-issue: 110696
+.. nonce: J9kSzr
+.. section: Core and Builtins
+
+Fix incorrect error message for invalid argument unpacking. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2023-10-11-12-48-03
+.. gh-issue: 104169
+.. nonce: bPoX8u
+.. section: Core and Builtins
+
+Split the tokenizer into two separate directories: - One part includes the
+actual lexeme producing logic and lives in ``Parser/lexer``. - The second
+part wraps the lexer according to the different tokenization modes   we have
+(string, utf-8, file, interactive, readline) and lives in
+``Parser/tokenizer``.
+
+..
+
+.. date: 2023-10-11-11-39-22
+.. gh-issue: 110688
+.. nonce: lB6Q7t
+.. section: Core and Builtins
+
+Remove undocumented ``test_c_api`` method from :class:`set`, which was only
+defined for testing purposes under ``Py_DEBUG``. Now we have proper CAPI
+tests.
+
+..
+
+.. date: 2023-10-10-00-49-35
+.. gh-issue: 104584
+.. nonce: z94TuJ
+.. section: Core and Builtins
+
+Fix a reference leak when running with :envvar:`PYTHONUOPS` or :option:`-X
+uops <-X>` enabled.
+
+..
+
+.. date: 2023-10-08-20-08-54
+.. gh-issue: 110514
+.. nonce: Q9bdRU
+.. section: Core and Builtins
+
+Add ``PY_THROW`` to :func:`sys.setprofile` events
+
+..
+
+.. date: 2023-10-06-22-30-25
+.. gh-issue: 110489
+.. nonce: rI2n8A
+.. section: Core and Builtins
+
+Optimise :func:`math.ceil` when the input is exactly a float, resulting in
+about a 10% improvement.
+
+..
+
+.. date: 2023-10-06-12-00-43
+.. gh-issue: 110455
+.. nonce: 8BjNGg
+.. section: Core and Builtins
+
+Guard ``assert(tstate->thread_id > 0)`` with ``#ifndef HAVE_PTHREAD_STUBS``.
+This allows for for pydebug builds to work under WASI which (currently)
+lacks thread support.
+
+..
+
+.. date: 2023-10-03-23-26-18
+.. gh-issue: 110309
+.. nonce: Y8nDOF
+.. section: Core and Builtins
+
+Remove unnecessary empty constant nodes in the ast of f-string specs.
+
+..
+
+.. date: 2023-10-03-11-43-48
+.. gh-issue: 110259
+.. nonce: ka93x5
+.. section: Core and Builtins
+
+Correctly identify the format spec in f-strings (with single or triple
+quotes) that have multiple lines in the expression part and include a
+formatting spec. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-02-23-17-08
+.. gh-issue: 110237
+.. nonce: _Xub0z
+.. section: Core and Builtins
+
+Fix missing error checks for calls to ``PyList_Append`` in
+``_PyEval_MatchClass``.
+
+..
+
+.. date: 2023-10-01-02-58-00
+.. gh-issue: 110164
+.. nonce: z7TMCq
+.. section: Core and Builtins
+
+regrtest: If the ``SOURCE_DATE_EPOCH`` environment variable is defined,
+regrtest now disables tests randomization. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-27-21-35-49
+.. gh-issue: 109889
+.. nonce: t5hIRT
+.. section: Core and Builtins
+
+Fix the compiler's redundant NOP detection algorithm to skip over NOPs with
+no line number when looking for the next instruction's lineno.
+
+..
+
+.. date: 2023-09-27-18-01-06
+.. gh-issue: 109853
+.. nonce: coQQiL
+.. section: Core and Builtins
+
+``sys.path[0]`` is now set correctly for subinterpreters.
+
+..
+
+.. date: 2023-09-26-21-26-54
+.. gh-issue: 109923
+.. nonce: WO3CHi
+.. section: Core and Builtins
+
+Set line number on the ``POP_TOP`` that follows a ``RETURN_GENERATOR``.
+
+..
+
+.. date: 2023-09-26-14-00-25
+.. gh-issue: 105716
+.. nonce: SUJkW1
+.. section: Core and Builtins
+
+Subinterpreters now correctly handle the case where they have threads
+running in the background.  Before, such threads would interfere with
+cleaning up and destroying them, as well as prevent running another script.
+
+..
+
+.. date: 2023-09-26-03-46-55
+.. gh-issue: 109369
+.. nonce: OJbxbF
+.. section: Core and Builtins
+
+The internal eval_breaker and supporting flags, plus the monitoring version
+have been merged into a single atomic integer to speed up checks.
+
+..
+
+.. date: 2023-09-25-14-28-14
+.. gh-issue: 109823
+.. nonce: kbVTKF
+.. section: Core and Builtins
+
+Fix bug where compiler does not adjust labels when removing an empty basic
+block which is a jump target.
+
+..
+
+.. date: 2023-09-25-09-24-10
+.. gh-issue: 109793
+.. nonce: zFQBkv
+.. section: Core and Builtins
+
+The main thread no longer exits prematurely when a subinterpreter is cleaned
+up during runtime finalization.  The bug was a problem particularly because,
+when triggered, the Python process would always return with a 0 exitcode,
+even if it failed.
+
+..
+
+.. date: 2023-09-22-13-38-17
+.. gh-issue: 109719
+.. nonce: fx5OTz
+.. section: Core and Builtins
+
+Fix missing jump target labels when compiler reorders cold/warm blocks.
+
+..
+
+.. date: 2023-09-22-01-44-53
+.. gh-issue: 109595
+.. nonce: fVINgD
+.. section: Core and Builtins
+
+Add :option:`-X cpu_count <-X>`  command line option to override return
+results of :func:`os.cpu_count` and :func:`os.process_cpu_count`. This
+option is useful for users who need to limit CPU resources of a container
+system without having to modify the container (application code). Patch by
+Donghee Na.
+
+..
+
+.. date: 2023-09-20-23-04-15
+.. gh-issue: 109627
+.. nonce: xxe7De
+.. section: Core and Builtins
+
+Fix bug where the compiler does not assign a new jump target label to a
+duplicated small exit block.
+
+..
+
+.. date: 2023-09-20-13-18-08
+.. gh-issue: 109596
+.. nonce: RG0K2G
+.. section: Core and Builtins
+
+Fix some tokens in the grammar that were incorrectly marked as soft
+keywords. Also fix some repeated rule names and ensure that repeated rules
+are not allowed. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-09-18-15-35-08
+.. gh-issue: 109496
+.. nonce: Kleoz3
+.. section: Core and Builtins
+
+On a Python built in debug mode, :c:func:`Py_DECREF()` now calls
+``_Py_NegativeRefcount()`` if the object is a dangling pointer to
+deallocated memory: memory filled with ``0xDD`` "dead byte" by the debug
+hook on memory allocators. The fix is to check the reference count *before*
+checking for ``_Py_IsImmortal()``. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-14-20-15-57
+.. gh-issue: 107265
+.. nonce: qHZL_6
+.. section: Core and Builtins
+
+Deopt opcodes hidden by the executor when base opcode is needed
+
+..
+
+.. date: 2023-09-13-21-04-04
+.. gh-issue: 109371
+.. nonce: HPEJr8
+.. section: Core and Builtins
+
+Deopted instructions correctly for tool initialization and modified the
+incorrect assertion in instrumentation, when a previous tool already sets
+INSTRUCTION events
+
+..
+
+.. date: 2023-09-13-19-16-51
+.. gh-issue: 105658
+.. nonce: z2nR2u
+.. section: Core and Builtins
+
+Fix bug where the line trace of an except block ending with a conditional
+includes an excess event with the line of the conditional expression.
+
+..
+
+.. date: 2023-09-13-08-42-45
+.. gh-issue: 109219
+.. nonce: UiN8sc
+.. section: Core and Builtins
+
+Fix compiling type param scopes that use a name which is also free in an
+inner scope.
+
+..
+
+.. date: 2023-09-12-16-00-42
+.. gh-issue: 109351
+.. nonce: kznGeR
+.. section: Core and Builtins
+
+Fix crash when compiling an invalid AST involving a named (walrus)
+expression.
+
+..
+
+.. date: 2023-09-12-15-45-49
+.. gh-issue: 109341
+.. nonce: 4V5bkm
+.. section: Core and Builtins
+
+Fix crash when compiling an invalid AST involving a :class:`ast.TypeAlias`.
+
+..
+
+.. date: 2023-09-11-15-51-55
+.. gh-issue: 109195
+.. nonce: iwxmuo
+.. section: Core and Builtins
+
+Fix source location for the ``LOAD_*`` instruction preceding a
+``LOAD_SUPER_ATTR`` to load the ``super`` global (or shadowing variable) so
+that it encompasses only the name ``super`` and not the following
+parentheses.
+
+..
+
+.. date: 2023-09-11-15-11-03
+.. gh-issue: 109256
+.. nonce: 6mfhvF
+.. section: Core and Builtins
+
+Opcode IDs for specialized opcodes are allocated in their own range to
+improve stability of the IDs for the 'real' opcodes.
+
+..
+
+.. date: 2023-09-11-12-41-42
+.. gh-issue: 109216
+.. nonce: 60QOSb
+.. section: Core and Builtins
+
+Fix possible memory leak in :opcode:`BUILD_MAP`.
+
+..
+
+.. date: 2023-09-10-18-53-55
+.. gh-issue: 109207
+.. nonce: Fei8bY
+.. section: Core and Builtins
+
+Fix a SystemError in ``__repr__`` of symtable entry object.
+
+..
+
+.. date: 2023-09-09-21-17-18
+.. gh-issue: 109179
+.. nonce: ZR8qs2
+.. section: Core and Builtins
+
+Fix bug where the C traceback display drops notes from :exc:`SyntaxError`.
+
+..
+
+.. date: 2023-09-09-12-49-46
+.. gh-issue: 109118
+.. nonce: gx0X4h
+.. section: Core and Builtins
+
+Disallow nested scopes (lambdas, generator expressions, and comprehensions)
+within PEP 695 annotation scopes that are nested within classes.
+
+..
+
+.. date: 2023-09-08-18-31-04
+.. gh-issue: 109156
+.. nonce: KK1EXI
+.. section: Core and Builtins
+
+Add tests for de-instrumenting instructions while keeping the
+instrumentation for lines
+
+..
+
+.. date: 2023-09-08-01-50-41
+.. gh-issue: 109114
+.. nonce: adqgtb
+.. section: Core and Builtins
+
+Relax the detection of the error message for invalid lambdas inside
+f-strings to not search for arbitrary replacement fields to avoid false
+positives. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-09-07-20-52-27
+.. gh-issue: 105848
+.. nonce: p799D1
+.. section: Core and Builtins
+
+Add a new :opcode:`CALL_KW` opcode, used for calls containing keyword
+arguments. Also, fix a possible crash when jumping over method calls in a
+debugger.
+
+..
+
+.. date: 2023-09-07-18-49-01
+.. gh-issue: 109052
+.. nonce: TBU4nC
+.. section: Core and Builtins
+
+Use the base opcode when comparing code objects to avoid interference from
+instrumentation
+
+..
+
+.. date: 2023-09-07-18-24-42
+.. gh-issue: 109118
+.. nonce: yPXRAe
+.. section: Core and Builtins
+
+Fix interpreter crash when a NameError is raised inside the type parameters
+of a generic class.
+
+..
+
+.. date: 2023-09-07-16-05-36
+.. gh-issue: 88943
+.. nonce: rH_X3W
+.. section: Core and Builtins
+
+Improve syntax error for non-ASCII character that follows a numerical
+literal. It now points on the invalid non-ASCII character, not on the valid
+numerical literal.
+
+..
+
+.. date: 2023-09-06-22-50-25
+.. gh-issue: 108976
+.. nonce: MUKaIJ
+.. section: Core and Builtins
+
+Fix crash that occurs after de-instrumenting a code object in a monitoring
+callback.
+
+..
+
+.. date: 2023-09-06-13-28-42
+.. gh-issue: 108732
+.. nonce: I6DkEQ
+.. section: Core and Builtins
+
+Make iteration variables of module- and class-scoped comprehensions visible
+to pdb and other tools that use ``frame.f_locals`` again.
+
+..
+
+.. date: 2023-09-05-20-52-17
+.. gh-issue: 108959
+.. nonce: 6z45Sy
+.. section: Core and Builtins
+
+Fix caret placement for error locations for subscript and binary operations
+that involve non-semantic parentheses and spaces. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-09-05-11-31-27
+.. gh-issue: 104584
+.. nonce: IRSXA2
+.. section: Core and Builtins
+
+Fix a crash when running with :envvar:`PYTHONUOPS` or :option:`-X uops <-X>`
+enabled and an error occurs during optimization.
+
+..
+
+.. date: 2023-08-31-21-29-28
+.. gh-issue: 108727
+.. nonce: blNRGM
+.. section: Core and Builtins
+
+Define ``tp_dealloc`` for ``CounterOptimizer_Type``. This fixes a segfault
+on deallocation.
+
+..
+
+.. date: 2023-08-30-15-41-47
+.. gh-issue: 108520
+.. nonce: u0ZGP_
+.. section: Core and Builtins
+
+Fix :meth:`multiprocessing.synchronize.SemLock.__setstate__` to properly
+initialize :attr:`multiprocessing.synchronize.SemLock._is_fork_ctx`. This
+fixes a regression when passing a SemLock accross nested processes.
+
+Rename :attr:`multiprocessing.synchronize.SemLock.is_fork_ctx` to
+:attr:`multiprocessing.synchronize.SemLock._is_fork_ctx` to avoid exposing
+it as public API.
+
+..
+
+.. date: 2023-08-29-17-53-12
+.. gh-issue: 108654
+.. nonce: jbkDVo
+.. section: Core and Builtins
+
+Restore locals shadowed by an inlined comprehension if the comprehension
+raises an exception.
+
+..
+
+.. date: 2023-08-28-22-22-15
+.. gh-issue: 108488
+.. nonce: e8-fxg
+.. section: Core and Builtins
+
+Change the initialization of inline cache entries so that the cache entry
+for ``JUMP_BACKWARD`` is initialized to zero, instead of the
+``adaptive_counter_warmup()`` value used for all other instructions. This
+counter, unique among instructions, counts up from zero.
+
+..
+
+.. date: 2023-08-28-03-38-28
+.. gh-issue: 108716
+.. nonce: HJBPwt
+.. section: Core and Builtins
+
+Turn off deep-freezing of code objects. Modules are still frozen, so that a
+file system search is not needed for common modules.
+
+..
+
+.. date: 2023-08-26-10-36-45
+.. gh-issue: 108614
+.. nonce: wl5l-W
+.. section: Core and Builtins
+
+Add RESUME_CHECK instruction, to avoid having to handle instrumentation,
+signals, and contexts switches in the tier 2 execution engine.
+
+..
+
+.. date: 2023-08-26-04-31-01
+.. gh-issue: 108487
+.. nonce: 1Gbr9k
+.. section: Core and Builtins
+
+Move an assert that would cause a spurious crash in a devious case that
+should only trigger deoptimization.
+
+..
+
+.. date: 2023-08-25-14-51-06
+.. gh-issue: 106176
+.. nonce: D1EA2a
+.. section: Core and Builtins
+
+Use a ``WeakValueDictionary`` to track the lists containing the modules each
+thread is currently importing. This helps avoid a reference leak from
+keeping the list around longer than necessary. Weakrefs are used as GC can't
+interrupt the cleanup.
+
+..
+
+.. date: 2023-08-23-14-54-15
+.. gh-issue: 105481
+.. nonce: 40q-c4
+.. section: Core and Builtins
+
+The regen-opcode build stage was removed and its work is now done in
+regen-cases.
+
+..
+
+.. date: 2023-08-21-21-13-30
+.. gh-issue: 107901
+.. nonce: hszvdk
+.. section: Core and Builtins
+
+Fix missing line number on :opcode:`JUMP_BACKWARD` at the end of a for loop.
+
+..
+
+.. date: 2023-08-18-18-21-27
+.. gh-issue: 108113
+.. nonce: 1h0poE
+.. section: Core and Builtins
+
+The :func:`compile` built-in can now accept a new flag,
+``ast.PyCF_OPTIMIZED_AST``, which is similar to ``ast.PyCF_ONLY_AST`` except
+that the returned ``AST`` is optimized according to the value of the
+``optimize`` argument.
+
+:func:`ast.parse` now accepts an optional argument ``optimize`` which is
+passed on to the :func:`compile` built-in. This makes it possible to obtain
+an optimized ``AST``.
+
+..
+
+.. date: 2023-08-15-13-06-05
+.. gh-issue: 107971
+.. nonce: lPbx04
+.. section: Core and Builtins
+
+Opcode IDs are generated from bytecodes.c instead of being hard coded in
+opcode.py.
+
+..
+
+.. date: 2023-08-15-11-09-50
+.. gh-issue: 107944
+.. nonce: zQLp3j
+.. section: Core and Builtins
+
+Improve error message for function calls with bad keyword arguments. Patch
+by Pablo Galindo
+
+..
+
+.. date: 2023-08-13-17-18-22
+.. gh-issue: 108390
+.. nonce: TkBccC
+.. section: Core and Builtins
+
+Raise an exception when setting a non-local event (``RAISE``,
+``EXCEPTION_HANDLED``, etc.) in ``sys.monitoring.set_local_events``.
+
+Fixes crash when tracing in recursive calls to Python classes.
+
+..
+
+.. date: 2023-08-11-16-18-19
+.. gh-issue: 108035
+.. nonce: e2msOD
+.. section: Core and Builtins
+
+Remove the ``_PyCFrame`` struct, moving the pointer to the current
+intepreter frame back to the threadstate, as it was for 3.10 and earlier.
+The ``_PyCFrame`` existed as a performance optimization for tracing. Since
+PEP 669 has been implemented, this optimization no longer applies.
+
+..
+
+.. date: 2023-08-10-17-36-27
+.. gh-issue: 91051
+.. nonce: LfaeNW
+.. section: Core and Builtins
+
+Fix abort / segfault when using all eight type watcher slots, on platforms
+where ``char`` is signed by default.
+
+..
+
+.. date: 2023-08-10-00-00-48
+.. gh-issue: 106581
+.. nonce: o7zDty
+.. section: Core and Builtins
+
+Fix possible assertion failures and missing instrumentation events when
+:envvar:`PYTHONUOPS` or :option:`-X uops <-X>` is enabled.
+
+..
+
+.. date: 2023-08-09-15-05-27
+.. gh-issue: 107526
+.. nonce: PB32z-
+.. section: Core and Builtins
+
+Revert converting ``vars``, ``dir``, ``next``, ``getattr``, and ``iter`` to
+argument clinic.
+
+..
+
+.. date: 2023-08-09-08-31-20
+.. gh-issue: 84805
+.. nonce: 7JRWua
+.. section: Core and Builtins
+
+Autogenerate signature for :c:macro:`METH_NOARGS` and :c:macro:`METH_O`
+extension functions.
+
+..
+
+.. date: 2023-08-08-02-46-46
+.. gh-issue: 107758
+.. nonce: R5kyBI
+.. section: Core and Builtins
+
+Make the ``dump_stack()`` routine used by the ``lltrace`` feature (low-level
+interpreter debugging) robust against recursion by ensuring that it never
+calls a ``__repr__`` method implemented in Python. Also make the similar
+output for Tier-2 uops appear on ``stdout`` (instead of ``stderr``), to
+match the ``lltrace`` code in ceval.c.
+
+..
+
+.. date: 2023-08-05-15-45-07
+.. gh-issue: 107659
+.. nonce: QgtQ5M
+.. section: Core and Builtins
+
+Add docstrings for :func:`ctypes.pointer` and :func:`ctypes.POINTER`.
+
+..
+
+.. date: 2023-08-05-09-06-56
+.. gh-issue: 105848
+.. nonce: Drc-1-
+.. section: Core and Builtins
+
+Modify the bytecode so that the actual callable for a :opcode:`CALL` is at a
+consistent position on the stack (regardless of whether or not
+bound-method-calling optimizations are active).
+
+..
+
+.. date: 2023-08-05-04-47-18
+.. gh-issue: 107674
+.. nonce: 0sYhR2
+.. section: Core and Builtins
+
+Fixed performance regression in ``sys.settrace``.
+
+..
+
+.. date: 2023-08-04-21-25-26
+.. gh-issue: 107724
+.. nonce: EbBXMr
+.. section: Core and Builtins
+
+In pre-release versions of 3.12, up to rc1, the sys.monitoring callback
+function for the ``PY_THROW`` event was missing the third, exception
+argument. That is now fixed.
+
+..
+
+.. date: 2023-08-03-13-38-14
+.. gh-issue: 84436
+.. nonce: gl1wHx
+.. section: Core and Builtins
+
+Skip reference count modifications for many known immortal objects.
+
+..
+
+.. date: 2023-08-03-11-13-09
+.. gh-issue: 107596
+.. nonce: T3yPGI
+.. section: Core and Builtins
+
+Specialize subscripting :class:`str` objects by :class:`int` indexes.
+
+..
+
+.. date: 2023-08-02-12-24-51
+.. gh-issue: 107080
+.. nonce: PNolFU
+.. section: Core and Builtins
+
+Trace refs builds (``--with-trace-refs``) were crashing when used with
+isolated subinterpreters.  The problematic global state has been isolated to
+each interpreter.  Other fixing the crashes, this change does not affect
+users.
+
+..
+
+.. date: 2023-08-02-09-55-21
+.. gh-issue: 107557
+.. nonce: P1z-in
+.. section: Core and Builtins
+
+Generate the cases needed for the barebones tier 2 abstract interpreter for
+optimization passes in CPython.
+
+..
+
+.. date: 2023-08-01-09-41-36
+.. gh-issue: 106608
+.. nonce: OFZogw
+.. section: Core and Builtins
+
+Make ``_PyUOpExecutorObject`` variable length.
+
+..
+
+.. date: 2023-07-30-18-05-11
+.. gh-issue: 100964
+.. nonce: HluhBJ
+.. section: Core and Builtins
+
+Clear generators' exception state after ``return`` to break reference
+cycles.
+
+..
+
+.. date: 2023-07-30-14-18-49
+.. gh-issue: 107455
+.. nonce: Es53l7
+.. section: Core and Builtins
+
+Improve error messages when converting an incompatible type to
+:class:`ctypes.c_char_p`, :class:`ctypes.c_wchar_p` and
+:class:`ctypes.c_void_p`.
+
+..
+
+.. date: 2023-07-30-05-20-16
+.. gh-issue: 107263
+.. nonce: q0IU2M
+.. section: Core and Builtins
+
+Increase C recursion limit for functions other than the main interpreter
+from 800 to 1500. This should allow functions like ``list.__repr__`` and
+``json.dumps`` to handle all the inputs that they could prior to 3.12
+
+..
+
+.. date: 2023-07-29-22-01-30
+.. gh-issue: 104584
+.. nonce: tINuoA
+.. section: Core and Builtins
+
+Fix an issue which caused incorrect inline caches to be read when running
+with :envvar:`PYTHONUOPS` or :option:`-X uops <-X>` enabled.
+
+..
+
+.. date: 2023-07-27-11-47-29
+.. gh-issue: 104432
+.. nonce: oGHF-z
+.. section: Core and Builtins
+
+Fix potential unaligned memory access on C APIs involving returned sequences
+of ``char *`` pointers within the :mod:`grp` and :mod:`socket` modules.
+These were revealed using a ``-fsaniziter=alignment`` build on ARM macOS.
+Patch by Christopher Chavez.
+
+..
+
+.. date: 2023-07-27-11-18-04
+.. gh-issue: 106078
+.. nonce: WEy2Yn
+.. section: Core and Builtins
+
+Isolate :mod:`!_decimal` (apply :pep:`687`). Patch by Charlie Zhao.
+
+..
+
+.. date: 2023-07-26-21-28-06
+.. gh-issue: 106898
+.. nonce: 8Wjuiv
+.. section: Core and Builtins
+
+Add the exception as the third argument to ``PY_UNIND`` callbacks in
+``sys.monitoring``. This makes the ``PY_UNWIND`` callback consistent with
+the other exception hanlding callbacks.
+
+..
+
+.. date: 2023-07-26-18-53-34
+.. gh-issue: 106895
+.. nonce: DdEwV8
+.. section: Core and Builtins
+
+Raise a ``ValueError`` when a monitoring callback funtion returns
+``DISABLE`` for events that cannot be disabled locally.
+
+..
+
+.. date: 2023-07-26-12-18-10
+.. gh-issue: 106897
+.. nonce: EsGurc
+.. section: Core and Builtins
+
+Add a ``RERAISE`` event to ``sys.monitoring``, which occurs when an
+exception is reraise, either explicitly by a plain ``raise`` statement, or
+implicitly in an ``except`` or ``finally`` block.
+
+..
+
+.. date: 2023-07-25-22-35-35
+.. gh-issue: 77377
+.. nonce: EHAbXx
+.. section: Core and Builtins
+
+Ensure that multiprocessing synchronization objects created in a fork
+context are not sent to a different process created in a spawn context. This
+changes a segfault into an actionable RuntimeError in the parent process.
+
+..
+
+.. date: 2023-07-25-15-29-26
+.. gh-issue: 106931
+.. nonce: kKU1le
+.. section: Core and Builtins
+
+Statically allocated string objects are now interned globally instead of
+per-interpreter.  This fixes a situation where such a string would only be
+interned in a single interpreter. Normal string objects are unaffected.
+
+..
+
+.. date: 2023-07-24-11-11-41
+.. gh-issue: 104621
+.. nonce: vM8Y_l
+.. section: Core and Builtins
+
+Unsupported modules now always fail to be imported.
+
+..
+
+.. date: 2023-07-23-21-16-54
+.. gh-issue: 107122
+.. nonce: VNuNcq
+.. section: Core and Builtins
+
+Add :meth:`dbm.ndbm.ndbm.clear` to :mod:`dbm.ndbm`. Patch By Donghee Na.
+
+..
+
+.. date: 2023-07-23-13-07-34
+.. gh-issue: 107122
+.. nonce: 9HFUyb
+.. section: Core and Builtins
+
+Add :meth:`dbm.gnu.gdbm.clear` to :mod:`dbm.gnu`. Patch By Donghee Na.
+
+..
+
+.. date: 2023-07-22-14-35-38
+.. gh-issue: 107015
+.. nonce: Ghp58t
+.. section: Core and Builtins
+
+The ASYNC and AWAIT tokens are removed from the Grammar, which removes the
+posibility of making ``async`` and ``await`` soft keywords when using
+``feature_version<7`` in :func:`ast.parse`.
+
+..
+
+.. date: 2023-07-21-14-37-48
+.. gh-issue: 106917
+.. nonce: 1jWp_m
+.. section: Core and Builtins
+
+Fix classmethod-style :func:`super` method calls (i.e., where the second
+argument to :func:`super`, or the implied second argument drawn from
+``self/cls`` in the case of zero-arg super, is a type) when the target of
+the call is not a classmethod.
+
+..
+
+.. date: 2023-07-20-15-15-57
+.. gh-issue: 105699
+.. nonce: DdqHFg
+.. section: Core and Builtins
+
+Python no longer crashes due an infrequent race when initialzing
+per-interpreter interned strings.  The crash would manifest when the
+interpreter was finalized.
+
+..
+
+.. date: 2023-07-20-12-21-37
+.. gh-issue: 105699
+.. nonce: 08ywGV
+.. section: Core and Builtins
+
+Python no longer crashes due to an infrequent race in setting
+``Py_FileSystemDefaultEncoding`` and ``Py_FileSystemDefaultEncodeErrors``
+(both deprecated), when simultaneously initializing two isolated
+subinterpreters.  Now they are only set during runtime initialization.
+
+..
+
+.. date: 2023-07-20-01-15-58
+.. gh-issue: 106908
+.. nonce: cDmcVI
+.. section: Core and Builtins
+
+Fix various hangs, reference leaks, test failures, and tracing/introspection
+bugs when running with :envvar:`PYTHONUOPS` or :option:`-X uops <-X>`
+enabled.
+
+..
+
+.. date: 2023-07-18-16-13-51
+.. gh-issue: 106092
+.. nonce: bObgRM
+.. section: Core and Builtins
+
+Fix a segmentation fault caused by a use-after-free bug in ``frame_dealloc``
+when the trashcan delays the deallocation of a ``PyFrameObject``.
+
+..
+
+.. date: 2023-07-16-07-55-19
+.. gh-issue: 106485
+.. nonce: wPb1bH
+.. section: Core and Builtins
+
+Reduce the number of materialized instances dictionaries by dematerializing
+them when possible.
+
+..
+
+.. date: 2023-07-13-15-59-07
+.. gh-issue: 106719
+.. nonce: jmVrsv
+.. section: Core and Builtins
+
+No longer suppress arbitrary errors in the ``__annotations__`` getter and
+setter in the type and module types.
+
+..
+
+.. date: 2023-07-13-14-55-45
+.. gh-issue: 106723
+.. nonce: KsMufQ
+.. section: Core and Builtins
+
+Propagate ``frozen_modules`` to multiprocessing spawned process
+interpreters.
+
+..
+
+.. date: 2023-07-12-11-18-55
+.. gh-issue: 104909
+.. nonce: DRUsuh
+.. section: Core and Builtins
+
+Split :opcode:`LOAD_ATTR_INSTANCE_VALUE` into micro-ops.
+
+..
+
+.. date: 2023-07-12-10-48-08
+.. gh-issue: 104909
+.. nonce: sWjcr2
+.. section: Core and Builtins
+
+Split :opcode:`LOAD_GLOBAL` specializations into micro-ops.
+
+..
+
+.. date: 2023-07-10-15-30-45
+.. gh-issue: 106597
+.. nonce: WAZ14y
+.. section: Core and Builtins
+
+A new debug structure of offsets has been added to the ``_PyRuntimeState``
+that will help out-of-process debuggers and profilers to obtain the offsets
+to relevant interpreter structures in a way that is agnostic of how Python
+was compiled and that doesn't require copying the headers. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2023-07-06-22-46-05
+.. gh-issue: 106487
+.. nonce: u3KfAD
+.. section: Core and Builtins
+
+Allow the *count* argument of :meth:`str.replace` to be a keyword. Patch by
+Hugo van Kemenade.
+
+..
+
+.. date: 2023-07-06-00-35-44
+.. gh-issue: 96844
+.. nonce: kwvoS-
+.. section: Core and Builtins
+
+Improve error message of :meth:`list.remove`. Patch by Donghee Na.
+
+..
+
+.. date: 2023-07-04-20-42-54
+.. gh-issue: 81283
+.. nonce: hfh_MD
+.. section: Core and Builtins
+
+Compiler now strips indents from docstrings. It reduces ``pyc`` file size 5%
+when the module is heavily documented. This change affects to ``__doc__`` so
+tools like doctest will be affected.
+
+..
+
+.. date: 2023-07-04-09-51-45
+.. gh-issue: 106396
+.. nonce: DmYp7x
+.. section: Core and Builtins
+
+When the format specification of an f-string expression is empty, the parser
+now generates an empty :class:`ast.JoinedStr` node for it instead of an
+one-element :class:`ast.JoinedStr` with an empty string
+:class:`ast.Constant`.
+
+..
+
+.. date: 2023-07-04-04-50-14
+.. gh-issue: 100288
+.. nonce: yNQ1ez
+.. section: Core and Builtins
+
+Specialize :opcode:`LOAD_ATTR` for non-descriptors on the class. Adds
+:opcode:`LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES` and
+:opcode:`LOAD_ATTR_NONDESCRIPTOR_NO_DICT`.
+
+..
+
+.. date: 2023-07-03-11-38-43
+.. gh-issue: 106008
+.. nonce: HDf1zd
+.. section: Core and Builtins
+
+Fix possible reference leaks when failing to optimize comparisons with
+:const:`None` in the bytecode compiler.
+
+..
+
+.. date: 2023-06-29-09-46-41
+.. gh-issue: 106145
+.. nonce: QC6-Kq
+.. section: Core and Builtins
+
+Make ``end_lineno`` and ``end_col_offset`` required on ``type_param`` ast
+nodes.
+
+..
+
+.. date: 2023-06-29-09-42-56
+.. gh-issue: 106213
+.. nonce: TCUgzM
+.. section: Core and Builtins
+
+Changed the way that Emscripten call trampolines work for compatibility with
+Wasm/JS Promise integration.
+
+..
+
+.. date: 2023-06-28-15-19-59
+.. gh-issue: 106182
+.. nonce: cDSFi0
+.. section: Core and Builtins
+
+:func:`sys.getfilesystemencoding` and :mod:`sys.getfilesystemencodeerrors`
+now return interned Unicode object.
+
+..
+
+.. date: 2023-06-28-13-19-20
+.. gh-issue: 106210
+.. nonce: oE7VMn
+.. section: Core and Builtins
+
+Removed Emscripten import trampoline as it was no longer necessary for
+Pyodide.
+
+..
+
+.. date: 2023-06-27-00-58-26
+.. gh-issue: 104584
+.. nonce: Wu-uXy
+.. section: Core and Builtins
+
+Added a new, experimental, tracing optimizer and interpreter (a.k.a. "tier
+2"). This currently pessimizes, so don't use yet -- this is infrastructure
+so we can experiment with optimizing passes. To enable it, pass ``-Xuops``
+or set ``PYTHONUOPS=1``. To get debug output, set ``PYTHONUOPSDEBUG=N``
+where ``N`` is a debug level (0-4, where 0 is no debug output and 4 is
+excessively verbose).
+
+..
+
+.. date: 2023-06-24-10-34-27
+.. gh-issue: 105775
+.. nonce: OqjoGV
+.. section: Core and Builtins
+
+:opcode:`LOAD_CLOSURE` is now a pseudo-op.
+
+..
+
+.. date: 2023-06-23-16-51-02
+.. gh-issue: 105730
+.. nonce: 16haMe
+.. section: Core and Builtins
+
+Allow any callable other than type objects as the condition predicate in
+:meth:`BaseExceptionGroup.split` and :meth:`BaseExceptionGroup.subgroup`.
+
+..
+
+.. date: 2023-06-22-19-16-24
+.. gh-issue: 105979
+.. nonce: TDP2CU
+.. section: Core and Builtins
+
+Fix crash in :func:`!_imp.get_frozen_object` due to improper exception
+handling.
+
+..
+
+.. date: 2023-06-22-17-37-35
+.. gh-issue: 106003
+.. nonce: 2Vc_Tw
+.. section: Core and Builtins
+
+Add a new :opcode:`TO_BOOL` instruction, which performs boolean conversions
+for :opcode:`POP_JUMP_IF_TRUE`, :opcode:`POP_JUMP_IF_FALSE`, and
+:opcode:`UNARY_NOT` (which all expect exact :class:`bool` values now). Also,
+modify the oparg of :opcode:`COMPARE_OP` to include an optional "boolean
+conversion" flag.
+
+..
+
+.. date: 2023-06-22-14-19-17
+.. gh-issue: 98931
+.. nonce: PPgvSF
+.. section: Core and Builtins
+
+Ensure custom :exc:`SyntaxError` error messages are raised for invalid
+imports with multiple targets. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-06-20-10-53-17
+.. gh-issue: 105724
+.. nonce: d23L4M
+.. section: Core and Builtins
+
+Improve ``assert`` error messages by providing exact error range.
+
+..
+
+.. date: 2023-06-19-11-04-01
+.. gh-issue: 105908
+.. nonce: 7oanny
+.. section: Core and Builtins
+
+Fixed bug where :gh:`99111` breaks future import ``barry_as_FLUFL`` in the
+Python REPL.
+
+..
+
+.. date: 2023-06-15-22-11-43
+.. gh-issue: 105840
+.. nonce: Fum_g_
+.. section: Core and Builtins
+
+Fix possible crashes when specializing function calls with too many
+``__defaults__``.
+
+..
+
+.. date: 2023-06-15-15-54-47
+.. gh-issue: 105831
+.. nonce: -MC9Zs
+.. section: Core and Builtins
+
+Fix an f-string bug, where using a debug expression (the ``=`` sign) that
+appears in the last line of a file results to the debug buffer that holds
+the expression text being one character too small.
+
+..
+
+.. date: 2023-06-14-22-52-06
+.. gh-issue: 105800
+.. nonce: hdpPzZ
+.. section: Core and Builtins
+
+Correctly issue :exc:`SyntaxWarning` in f-strings if invalid sequences are
+used. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-06-12-16-38-31
+.. gh-issue: 105340
+.. nonce: _jRHXe
+.. section: Core and Builtins
+
+Include the comprehension iteration variable in ``locals()`` inside a
+module- or class-scope comprehension.
+
+..
+
+.. date: 2023-06-11-09-14-30
+.. gh-issue: 105331
+.. nonce: nlZvoW
+.. section: Core and Builtins
+
+Raise :exc:`ValueError` if the ``delay`` argument to :func:`asyncio.sleep`
+is a NaN (matching :func:`time.sleep`).
+
+..
+
+.. date: 2023-06-10-21-38-49
+.. gh-issue: 105587
+.. nonce: rL3rzv
+.. section: Core and Builtins
+
+The runtime can't guarantee that immortal objects will not be mutated by
+Extensions. Thus, this modifies _PyStaticObject_CheckRefcnt to warn instead
+of asserting.
+
+..
+
+.. date: 2023-06-09-15-25-12
+.. gh-issue: 105564
+.. nonce: sFdUu4
+.. section: Core and Builtins
+
+Don't include artificil newlines in the ``line`` attribute of tokens in the
+APIs of the :mod:`tokenize` module. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-06-09-12-59-18
+.. gh-issue: 105549
+.. nonce: PYfTNp
+.. section: Core and Builtins
+
+Tokenize separately ``NUMBER`` and ``NAME`` tokens that are not ambiguous.
+Patch by Pablo Galindo.
+
+..
+
+.. date: 2023-06-09-11-19-51
+.. gh-issue: 105588
+.. nonce: Y5ovpY
+.. section: Core and Builtins
+
+Fix an issue that could result in crashes when compiling malformed
+:mod:`ast` nodes.
+
+..
+
+.. date: 2023-06-09-10-48-17
+.. gh-issue: 100987
+.. nonce: mK-xny
+.. section: Core and Builtins
+
+Allow objects other than code objects as the "executable" in internal
+frames. In the long term, this can help tools like Cython and PySpy interact
+more efficiently. In the shorter term, it allows us to perform some
+optimizations more simply.
+
+..
+
+.. date: 2023-06-08-10-10-07
+.. gh-issue: 105375
+.. nonce: 35VGDd
+.. section: Core and Builtins
+
+Fix bugs in the :mod:`builtins` module where exceptions could end up being
+overwritten.
+
+..
+
+.. date: 2023-06-08-09-54-37
+.. gh-issue: 105375
+.. nonce: kqKT3E
+.. section: Core and Builtins
+
+Fix bug in the compiler where an exception could end up being overwritten.
+
+..
+
+.. date: 2023-06-08-09-25-52
+.. gh-issue: 105375
+.. nonce: ocB7fT
+.. section: Core and Builtins
+
+Improve error handling in :c:func:`PyUnicode_BuildEncodingMap` where an
+exception could end up being overwritten.
+
+..
+
+.. date: 2023-06-08-09-10-15
+.. gh-issue: 105486
+.. nonce: dev-WS
+.. section: Core and Builtins
+
+Change the repr of ``ParamSpec`` list of args in ``types.GenericAlias``.
+
+..
+
+.. date: 2023-06-07-21-27-55
+.. gh-issue: 105678
+.. nonce: wKOr7F
+.. section: Core and Builtins
+
+Break the ``MAKE_FUNCTION`` instruction into two parts, ``MAKE_FUNCTION``
+which makes the function and ``SET_FUNCTION_ATTRIBUTE`` which sets the
+attributes on the function. This makes the stack effect of ``MAKE_FUNCTION``
+regular to ease optimization and code generation.
+
+..
+
+.. date: 2023-06-07-12-20-59
+.. gh-issue: 105435
+.. nonce: 6VllI0
+.. section: Core and Builtins
+
+Fix spurious newline character if file ends on a comment without a newline.
+Patch by Pablo Galindo
+
+..
+
+.. date: 2023-06-06-17-10-42
+.. gh-issue: 105390
+.. nonce: DvqI-e
+.. section: Core and Builtins
+
+Correctly raise :exc:`tokenize.TokenError` exceptions instead of
+:exc:`SyntaxError` for tokenize errors such as incomplete input. Patch by
+Pablo Galindo
+
+..
+
+.. date: 2023-06-06-11-37-53
+.. gh-issue: 105259
+.. nonce: E2BGKL
+.. section: Core and Builtins
+
+Don't include newline character for trailing ``NEWLINE`` tokens emitted in
+the :mod:`tokenize` module. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-06-05-23-38-43
+.. gh-issue: 104635
+.. nonce: VYZhVh
+.. section: Core and Builtins
+
+Eliminate redundant :opcode:`STORE_FAST` instructions in the compiler. Patch
+by Donghee Na and Carl Meyer.
+
+..
+
+.. date: 2023-06-05-17-35-50
+.. gh-issue: 105324
+.. nonce: BqhiJJ
+.. section: Core and Builtins
+
+Fix the main function of the :mod:`tokenize` module when reading from
+``sys.stdin``. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-06-05-08-30-49
+.. gh-issue: 33092
+.. nonce: hZ0xSI
+.. section: Core and Builtins
+
+Simplify and speed up interpreter for f-strings. Removes ``FORMAT_VALUE``
+opcode. Add ``CONVERT_VALUE``, ``FORMAT_SIMPLE`` and ``FORMAT_WITH_SPEC``
+opcode. Compiler emits more efficient sequence for each format expression.
+
+..
+
+.. date: 2023-06-03-04-28-28
+.. gh-issue: 105229
+.. nonce: stEmfp
+.. section: Core and Builtins
+
+Remove remaining two-codeunit superinstructions. All remaining
+superinstructions only take a single codeunit, simplifying instrumentation
+and quickening.
+
+..
+
+.. date: 2023-06-02-19-37-29
+.. gh-issue: 105235
+.. nonce: fgFGTi
+.. section: Core and Builtins
+
+Prevent out-of-bounds memory access during ``mmap.find()`` calls.
+
+..
+
+.. date: 2023-06-02-17-39-19
+.. gh-issue: 98963
+.. nonce: J4wJgk
+.. section: Core and Builtins
+
+Restore the ability for a subclass of :class:`property` to define
+``__slots__`` or otherwise be dict-less by ignoring failures to set a
+docstring on such a class.  This behavior had regressed in 3.12beta1.  An
+:exc:`AttributeError` where there had not previously been one was disruptive
+to existing code.
+
+..
+
+.. date: 2023-06-02-15-15-41
+.. gh-issue: 104812
+.. nonce: dfZiG5
+.. section: Core and Builtins
+
+The "pending call" machinery now works for all interpreters, not just the
+main interpreter, and runs in all threads, not just the main thread. Some
+calls are still only done in the main thread, ergo in the main interpreter.
+This change does not affect signal handling nor the existing public C-API
+(``Py_AddPendingCall()``), which both still only target the main thread. The
+new functionality is meant strictly for internal use for now, since
+consequences of its use are not well understood yet outside some very
+restricted cases.  This change brings the capability in line with the
+intention when the state was made per-interpreter several years ago.
+
+..
+
+.. date: 2023-06-02-11-37-12
+.. gh-issue: 105194
+.. nonce: 4eu56B
+.. section: Core and Builtins
+
+Do not escape with backslashes f-string format specifiers. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2023-06-02-01-27-35
+.. gh-issue: 105229
+.. nonce: U05x4G
+.. section: Core and Builtins
+
+Replace some dynamic superinstructions with single instruction equivalents.
+
+..
+
+.. date: 2023-06-01-11-37-03
+.. gh-issue: 105162
+.. nonce: r8VCXk
+.. section: Core and Builtins
+
+Fixed bug in generator.close()/throw() where an inner iterator would be
+ignored when the outer iterator was instrumented.
+
+..
+
+.. date: 2023-05-31-19-35-22
+.. gh-issue: 105164
+.. nonce: 6Wajph
+.. section: Core and Builtins
+
+Ensure annotations are set up correctly if the only annotation in a block is
+within a :keyword:`match` block. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-31-16-22-29
+.. gh-issue: 105148
+.. nonce: MOlb1d
+.. section: Core and Builtins
+
+Make ``_PyASTOptimizeState`` internal to ast_opt.c. Make ``_PyAST_Optimize``
+take two integers instead of a pointer to this struct. This avoids the need
+to include pycore_compile.h in ast_opt.c.
+
+..
+
+.. date: 2023-05-31-08-10-59
+.. gh-issue: 104799
+.. nonce: 8kDWti
+.. section: Core and Builtins
+
+Attributes of :mod:`ast` nodes that are lists now default to the empty list
+if omitted. This means that some code that previously raised
+:exc:`TypeError` when the AST node was used will now proceed with the empty
+list instead. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-30-20-30-57
+.. gh-issue: 105111
+.. nonce: atn0_6
+.. section: Core and Builtins
+
+Remove the old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and
+``Py_TRASHCAN_SAFE_END``. They should be replaced by the new macros
+``Py_TRASHCAN_BEGIN`` and ``Py_TRASHCAN_END``.
+
+..
+
+.. date: 2023-05-30-08-09-43
+.. gh-issue: 105035
+.. nonce: OWUlHy
+.. section: Core and Builtins
+
+Fix :func:`super` calls on types with custom
+:c:member:`~PyTypeObject.tp_getattro` implementation (e.g. meta-types.)
+
+..
+
+.. date: 2023-05-27-21-50-48
+.. gh-issue: 105017
+.. nonce: 4sDyDV
+.. section: Core and Builtins
+
+Show CRLF lines in the tokenize string attribute in both NL and NEWLINE
+tokens. Patch by Marta Gómez.
+
+..
+
+.. date: 2023-05-27-16-57-11
+.. gh-issue: 105013
+.. nonce: IsDgDY
+.. section: Core and Builtins
+
+Fix handling of multiline parenthesized lambdas in
+:func:`inspect.getsource`. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-05-27-16-23-16
+.. gh-issue: 105017
+.. nonce: KQrsC0
+.. section: Core and Builtins
+
+Do not include an additional final ``NL`` token when parsing files having
+CRLF lines. Patch by Marta Gómez.
+
+..
+
+.. date: 2023-05-26-15-16-11
+.. gh-issue: 104976
+.. nonce: 6dLitD
+.. section: Core and Builtins
+
+Ensure that trailing ``DEDENT`` :class:`tokenize.TokenInfo` objects emitted
+by the :mod:`tokenize` module are reported as in Python 3.11. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2023-05-26-14-09-47
+.. gh-issue: 104972
+.. nonce: El2UjE
+.. section: Core and Builtins
+
+Ensure that the ``line`` attribute in :class:`tokenize.TokenInfo` objects in
+the :mod:`tokenize` module are always correct. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-05-25-21-40-39
+.. gh-issue: 104955
+.. nonce: LZx7jf
+.. section: Core and Builtins
+
+Fix signature for the new :meth:`~object.__release_buffer__` slot. Patch by
+Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-24-12-10-54
+.. gh-issue: 104690
+.. nonce: HX3Jou
+.. section: Core and Builtins
+
+Starting new threads and process creation through :func:`os.fork` during
+interpreter shutdown (such as from :mod:`atexit` handlers) is no longer
+supported.  It can lead to race condition between the main Python runtime
+thread freeing thread states while internal :mod:`threading` routines are
+trying to allocate and use the state of just created threads. Or forked
+children trying to use the mid-shutdown runtime and thread state in the
+child process.
+
+..
+
+.. date: 2023-05-24-10-19-35
+.. gh-issue: 104879
+.. nonce: v-29NL
+.. section: Core and Builtins
+
+Fix crash when accessing the ``__module__`` attribute of type aliases
+defined outside a module. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-24-09-59-56
+.. gh-issue: 104825
+.. nonce: mQesie
+.. section: Core and Builtins
+
+Tokens emitted by the :mod:`tokenize` module do not include an implicit
+``\n`` character in the ``line`` attribute anymore. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-05-23-00-36-02
+.. gh-issue: 104770
+.. nonce: poSkyY
+.. section: Core and Builtins
+
+If a generator returns a value upon being closed, the value is now returned
+by :meth:`generator.close`.
+
+..
+
+.. date: 2023-05-18-12-48-39
+.. gh-issue: 89091
+.. nonce: FDzRcW
+.. section: Core and Builtins
+
+Raise :exc:`RuntimeWarning` for unawaited async generator methods like
+:meth:`~agen.asend`, :meth:`~agen.athrow` and :meth:`~agen.aclose`. Patch by
+Kumar Aditya.
+
+..
+
+.. date: 2023-04-04-00-40-04
+.. gh-issue: 96663
+.. nonce: PdR9hK
+.. section: Core and Builtins
+
+Add a better, more introspect-able error message when setting attributes on
+classes without a ``__dict__`` and no slot member for the attribute.
+
+..
+
+.. date: 2023-03-26-19-11-10
+.. gh-issue: 93627
+.. nonce: 0UgwBL
+.. section: Core and Builtins
+
+Update the Python pickle module implementation to match the C implementation
+of the pickle module. For objects setting reduction methods like
+:meth:`~object.__reduce_ex__` or :meth:`~object.__reduce__` to ``None``,
+pickling will result in a :exc:`TypeError`.
+
+..
+
+.. date: 2023-01-13-11-37-41
+.. gh-issue: 101006
+.. nonce: fuLvn2
+.. section: Core and Builtins
+
+Improve error handling when read :mod:`marshal` data.
+
+..
+
+.. date: 2022-11-10-13-04-35
+.. gh-issue: 91095
+.. nonce: 4E3Pwn
+.. section: Core and Builtins
+
+Specializes calls to most Python classes. Specifically, any class that
+inherits from ``object``, or another Python class, and does not override
+``__new__``.
+
+The specialized instruction does the following:
+
+1. Creates the object (by calling ``object.__new__``)
+2. Pushes a shim frame to the frame stack (to cleanup after ``__init__``)
+3. Pushes the frame for ``__init__`` to the frame stack
+
+Speeds up the instantiation of most Python classes.
+
+..
+
+.. date: 2023-10-13-01-31-27
+.. gh-issue: 110786
+.. nonce: sThp-A
+.. section: Library
+
+:mod:`sysconfig`'s CLI now ignores :exc:`BrokenPipeError`, making it exit
+normally if its output is being piped and the pipe closes.
+
+..
+
+.. date: 2023-10-13-00-14-17
+.. gh-issue: 103480
+.. nonce: lmdf1J
+.. section: Library
+
+The :mod:`sysconfig` module is now a package, instead of a single-file
+module.
+
+..
+
+.. date: 2023-10-11-18-43-43
+.. gh-issue: 110733
+.. nonce: UlrgVm
+.. section: Library
+
+Micro-optimization: Avoid calling ``min()``, ``max()`` in
+:meth:`BaseEventLoop._run_once`.
+
+..
+
+.. date: 2023-10-11-15-07-21
+.. gh-issue: 94597
+.. nonce: NbPC8t
+.. section: Library
+
+Added :class:`asyncio.EventLoop` for use with the :func:`asyncio.run`
+*loop_factory* kwarg to avoid calling the asyncio policy system.
+
+..
+
+.. date: 2023-10-11-11-00-11
+.. gh-issue: 110682
+.. nonce: bXRFaX
+.. section: Library
+
+:func:`runtime-checkable protocols <typing.runtime_checkable>` used to
+consider ``__match_args__`` a protocol member in ``__instancecheck__`` if it
+was present on the protocol. Now, this attribute is ignored if it is
+present.
+
+..
+
+.. date: 2023-10-10-22-54-56
+.. gh-issue: 110488
+.. nonce: 2I7OiZ
+.. section: Library
+
+Fix a couple of issues in :meth:`pathlib.PurePath.with_name`: a single dot
+was incorrectly considered a valid name, and in :class:`PureWindowsPath`, a
+name with an NTFS alternate data stream, like ``a:b``, was incorrectly
+considered invalid.
+
+..
+
+.. date: 2023-10-10-10-46-55
+.. gh-issue: 110590
+.. nonce: fatz-h
+.. section: Library
+
+Fix a bug in :meth:`!_sre.compile` where :exc:`TypeError` would be
+overwritten by :exc:`OverflowError` when the *code* argument was a list of
+non-ints.
+
+..
+
+.. date: 2023-10-09-19-09-32
+.. gh-issue: 65052
+.. nonce: C2mRlo
+.. section: Library
+
+Prevent :mod:`pdb` from crashing when trying to display undisplayable
+objects
+
+..
+
+.. date: 2023-10-08-18-15-02
+.. gh-issue: 110519
+.. nonce: RDGe8-
+.. section: Library
+
+Deprecation warning about non-integer number in :mod:`gettext` now alwais
+refers to the line in the user code where gettext function or method is
+used. Previously it could refer to a line in ``gettext`` code.
+
+..
+
+.. date: 2023-10-07-21-12-28
+.. gh-issue: 89902
+.. nonce: dCokZj
+.. section: Library
+
+Deprecate non-standard format specifier "N" for :class:`decimal.Decimal`. It
+was not documented and only supported in the C implementation.
+
+..
+
+.. date: 2023-10-07-13-50-12
+.. gh-issue: 110378
+.. nonce: Y4L8fl
+.. section: Library
+
+:func:`~contextlib.contextmanager` and
+:func:`~contextlib.asynccontextmanager` context managers now close an
+invalid underlying generator object that yields more then one value.
+
+..
+
+.. date: 2023-10-07-00-18-40
+.. gh-issue: 106670
+.. nonce: kCGyRc
+.. section: Library
+
+In :mod:`pdb`, set convenience variable ``$_exception`` for post mortem
+debugging.
+
+..
+
+.. date: 2023-10-04-18-56-29
+.. gh-issue: 110365
+.. nonce: LCxiau
+.. section: Library
+
+Fix :func:`termios.tcsetattr` bug that was overwritting existing errors
+during parsing integers from ``term`` list.
+
+..
+
+.. date: 2023-10-03-15-17-03
+.. gh-issue: 109653
+.. nonce: 9DYOMD
+.. section: Library
+
+Slightly improve the import time of several standard-library modules by
+deferring imports of :mod:`warnings` within those modules. Patch by Alex
+Waygood.
+
+..
+
+.. date: 2023-10-03-14-07-05
+.. gh-issue: 110273
+.. nonce: QaDUmS
+.. section: Library
+
+:func:`dataclasses.replace` now raises TypeError instead of ValueError if
+specify keyword argument for a field declared with init=False or miss
+keyword argument for required InitVar field.
+
+..
+
+.. date: 2023-10-03-00-04-26
+.. gh-issue: 110249
+.. nonce: K0mMrs
+.. section: Library
+
+Add ``--inline-caches`` flag to ``dis`` command line.
+
+..
+
+.. date: 2023-10-02-15-40-10
+.. gh-issue: 109653
+.. nonce: iB0peK
+.. section: Library
+
+Fix a Python 3.12 regression in the import time of :mod:`random`. Patch by
+Alex Waygood.
+
+..
+
+.. date: 2023-10-02-15-07-28
+.. gh-issue: 110222
+.. nonce: zl_oHh
+.. section: Library
+
+Add support of struct sequence objects in :func:`copy.replace`. Patched by
+Xuehai Pan.
+
+..
+
+.. date: 2023-10-01-01-47-21
+.. gh-issue: 109649
+.. nonce: BizOaD
+.. section: Library
+
+:mod:`multiprocessing`, :mod:`concurrent.futures`, :mod:`compileall`:
+Replace :func:`os.cpu_count` with :func:`os.process_cpu_count` to select the
+default number of worker threads and processes. Get the CPU affinity if
+supported. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-30-12-50-47
+.. gh-issue: 110150
+.. nonce: 9j0Ij5
+.. section: Library
+
+Fix base case handling in statistics.quantiles.  Now allows a single data
+point.
+
+..
+
+.. date: 2023-09-28-18-53-11
+.. gh-issue: 110036
+.. nonce: fECxTj
+.. section: Library
+
+On Windows, multiprocessing ``Popen.terminate()`` now catchs
+:exc:`PermissionError` and get the process exit code. If the process is
+still running, raise again the :exc:`PermissionError`. Otherwise, the
+process terminated as expected: store its exit code. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-28-18-50-33
+.. gh-issue: 110038
+.. nonce: nx_gCu
+.. section: Library
+
+Fixed an issue that caused :meth:`KqueueSelector.select` to not return all
+the ready events in some cases when a file descriptor is registered for both
+read and write.
+
+..
+
+.. date: 2023-09-28-18-08-02
+.. gh-issue: 110045
+.. nonce: 0YIGKv
+.. section: Library
+
+Update the :mod:`symtable` module to support the new scopes introduced by
+:pep:`695`.
+
+..
+
+.. date: 2023-09-28-12-32-57
+.. gh-issue: 88402
+.. nonce: hoa3Gx
+.. section: Library
+
+Add new variables to :py:meth:`sysconfig.get_config_vars` on Windows:
+``LIBRARY``, ``LDLIBRARY``, ``LIBDIR``, ``SOABI``, and ``Py_NOGIL``.
+
+..
+
+.. date: 2023-09-25-23-00-37
+.. gh-issue: 109631
+.. nonce: eWSqpO
+.. section: Library
+
+:mod:`re` functions such as :func:`re.findall`, :func:`re.split`,
+:func:`re.search` and :func:`re.sub` which perform short repeated matches
+can now be interrupted by user.
+
+..
+
+.. date: 2023-09-25-10-47-22
+.. gh-issue: 109653
+.. nonce: TUHrId
+.. section: Library
+
+Reduce the import time of :mod:`email.utils` by around 43%. This results in
+the import time of :mod:`email.message` falling by around 18%, which in turn
+reduces the import time of :mod:`importlib.metadata` by around 6%. Patch by
+Alex Waygood.
+
+..
+
+.. date: 2023-09-25-09-59-59
+.. gh-issue: 109818
+.. nonce: dLRtT-
+.. section: Library
+
+Fix :func:`reprlib.recursive_repr` not copying ``__type_params__`` from
+decorated function.
+
+..
+
+.. date: 2023-09-25-02-11-14
+.. gh-issue: 109047
+.. nonce: b1TrqG
+.. section: Library
+
+:mod:`concurrent.futures`: The *executor manager thread* now catches
+exceptions when adding an item to the *call queue*. During Python
+finalization, creating a new thread can now raise :exc:`RuntimeError`. Catch
+the exception and call ``terminate_broken()`` in this case. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-24-16-43-33
+.. gh-issue: 109782
+.. nonce: gMC_7z
+.. section: Library
+
+Ensure the signature of :func:`os.path.isdir` is identical on all platforms.
+Patch by Amin Alaee.
+
+..
+
+.. date: 2023-09-24-13-28-35
+.. gh-issue: 109653
+.. nonce: 9IFU0B
+.. section: Library
+
+Improve import time of :mod:`functools` by around 13%. Patch by Alex
+Waygood.
+
+..
+
+.. date: 2023-09-24-06-04-14
+.. gh-issue: 109590
+.. nonce: 9EMofC
+.. section: Library
+
+:func:`shutil.which` will prefer files with an extension in ``PATHEXT`` if
+the given mode includes ``os.X_OK`` on win32. If no ``PATHEXT`` match is
+found, a file without an extension in ``PATHEXT`` can be returned. This
+change will have :func:`shutil.which` act more similarly to previous
+behavior in Python 3.11.
+
+..
+
+.. date: 2023-09-23-12-47-45
+.. gh-issue: 109653
+.. nonce: 9wZBfs
+.. section: Library
+
+Reduce the import time of :mod:`enum` by over 50%. Patch by Alex Waygood.
+
+..
+
+.. date: 2023-09-22-20-16-44
+.. gh-issue: 109593
+.. nonce: LboaNM
+.. section: Library
+
+Avoid deadlocking on a reentrant call to the multiprocessing resource
+tracker. Such a reentrant call, though unlikely, can happen if a GC pass
+invokes the finalizer for a multiprocessing object such as SemLock.
+
+..
+
+.. date: 2023-09-21-19-42-22
+.. gh-issue: 109653
+.. nonce: bL3iLH
+.. section: Library
+
+Reduce the import time of :mod:`typing` by around a third. Patch by Alex
+Waygood.
+
+..
+
+.. date: 2023-09-21-16-21-19
+.. gh-issue: 109649
+.. nonce: YYCjAF
+.. section: Library
+
+Add :func:`os.process_cpu_count` function to get the number of logical CPUs
+usable by the calling thread of the current process. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-21-14-26-44
+.. gh-issue: 74481
+.. nonce: KAUDcD
+.. section: Library
+
+Add ``set_error_mode`` related constants in ``msvcrt`` module in Python
+debug build.
+
+..
+
+.. date: 2023-09-20-17-45-46
+.. gh-issue: 109613
+.. nonce: P13ogN
+.. section: Library
+
+Fix :func:`os.stat` and :meth:`os.DirEntry.stat`: check for exceptions.
+Previously, on Python built in debug mode, these functions could trigger a
+fatal Python error (and abort the process) when a function succeeded with an
+exception set. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-20-07-38-14
+.. gh-issue: 109599
+.. nonce: IaSLJz
+.. section: Library
+
+Expose the type of PyCapsule objects as ``types.CapsuleType``.
+
+..
+
+.. date: 2023-09-19-17-56-24
+.. gh-issue: 109109
+.. nonce: WJvvX2
+.. section: Library
+
+You can now get the raw TLS certificate chains from TLS connections via
+:meth:`ssl.SSLSocket.get_verified_chain` and
+:meth:`ssl.SSLSocket.get_unverified_chain` methods.
+
+Contributed by Mateusz Nowak.
+
+..
+
+.. date: 2023-09-19-01-22-43
+.. gh-issue: 109559
+.. nonce: ijaycU
+.. section: Library
+
+Update :mod:`unicodedata` database to Unicode 15.1.0.
+
+..
+
+.. date: 2023-09-18-07-43-22
+.. gh-issue: 109543
+.. nonce: 1tOGoV
+.. section: Library
+
+Remove unnecessary :func:`hasattr` check during :data:`typing.TypedDict`
+creation.
+
+..
+
+.. date: 2023-09-16-15-44-16
+.. gh-issue: 109495
+.. nonce: m2H5Bk
+.. section: Library
+
+Remove unnecessary extra ``__slots__`` in :py:class:`datetime`\'s pure
+python implementation to reduce memory size, as they are defined in the
+superclass. Patch by James Hilton-Balfe
+
+..
+
+.. date: 2023-09-15-17-12-53
+.. gh-issue: 109461
+.. nonce: VNFPTK
+.. section: Library
+
+:mod:`logging`: Use a context manager for lock acquisition.
+
+..
+
+.. date: 2023-09-15-12-20-23
+.. gh-issue: 109096
+.. nonce: VksX1D
+.. section: Library
+
+:class:`http.server.CGIHTTPRequestHandler` has been deprecated for removal
+in 3.15.  Its design is old and the web world has long since moved beyond
+CGI.
+
+..
+
+.. date: 2023-09-15-10-42-30
+.. gh-issue: 109409
+.. nonce: RlffA3
+.. section: Library
+
+Fix error when it was possible to inherit a frozen dataclass from multiple
+parents some of which were possibly not frozen.
+
+..
+
+.. date: 2023-09-13-17-22-44
+.. gh-issue: 109375
+.. nonce: ijJHZ9
+.. section: Library
+
+The :mod:`pdb` ``alias`` command now prevents registering aliases without
+arguments.
+
+..
+
+.. date: 2023-09-12-13-01-55
+.. gh-issue: 109319
+.. nonce: YaCMtW
+.. section: Library
+
+Deprecate the ``dis.HAVE_ARGUMENT`` field in favour of ``dis.hasarg``.
+
+..
+
+.. date: 2023-09-11-00-32-18
+.. gh-issue: 107219
+.. nonce: 3zqyFT
+.. section: Library
+
+Fix a race condition in ``concurrent.futures``. When a process in the
+process pool was terminated abruptly (while the future was running or
+pending), close the connection write end. If the call queue is blocked on
+sending bytes to a worker process, closing the connection write end
+interrupts the send, so the queue can be closed. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-10-20-23-20
+.. gh-issue: 66143
+.. nonce: 71xvgL
+.. section: Library
+
+The :class:`codecs.CodecInfo` object has been made copyable and pickleable.
+Patched by Robert Lehmann and Furkan Onder.
+
+..
+
+.. date: 2023-09-09-17-09-54
+.. gh-issue: 109187
+.. nonce: dIayNW
+.. section: Library
+
+:meth:`pathlib.Path.resolve` now treats symlink loops like other errors: in
+strict mode, :exc:`OSError` is raised, and in non-strict mode, no exception
+is raised.
+
+..
+
+.. date: 2023-09-09-15-08-37
+.. gh-issue: 50644
+.. nonce: JUAZOh
+.. section: Library
+
+Attempts to pickle or create a shallow or deep copy of :mod:`codecs` streams
+now raise a TypeError. Previously, copying failed with a RecursionError,
+while pickling produced wrong results that eventually caused unpickling to
+fail with a RecursionError.
+
+..
+
+.. date: 2023-09-09-09-05-41
+.. gh-issue: 109174
+.. nonce: OJea5s
+.. section: Library
+
+Add support of :class:`types.SimpleNamespace` in :func:`copy.replace`.
+
+..
+
+.. date: 2023-09-08-22-26-26
+.. gh-issue: 109164
+.. nonce: -9BFWR
+.. section: Library
+
+:mod:`pdb`: Replace :mod:`getopt` with :mod:`argparse` for parsing command
+line arguments.
+
+..
+
+.. date: 2023-09-08-19-44-01
+.. gh-issue: 109151
+.. nonce: GkzkQu
+.. section: Library
+
+Enable ``readline`` editing features in the :ref:`sqlite3 command-line
+interface <sqlite3-cli>` (``python -m sqlite3``).
+
+..
+
+.. date: 2023-09-08-12-09-55
+.. gh-issue: 108987
+.. nonce: x5AIG8
+.. section: Library
+
+Fix :func:`_thread.start_new_thread` race condition. If a thread is created
+during Python finalization, the newly spawned thread now exits immediately
+instead of trying to access freed memory and lead to a crash. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-09-06-19-33-41
+.. gh-issue: 108682
+.. nonce: 35Xnc5
+.. section: Library
+
+Enum: require ``names=()`` or ``type=...`` to create an empty enum using the
+functional syntax.
+
+..
+
+.. date: 2023-09-06-14-47-28
+.. gh-issue: 109033
+.. nonce: piUzDx
+.. section: Library
+
+Exceptions raised by os.utime builtin function now include the related
+filename
+
+..
+
+.. date: 2023-09-06-06-17-23
+.. gh-issue: 108843
+.. nonce: WJMhsS
+.. section: Library
+
+Fix an issue in :func:`ast.unparse` when unparsing f-strings containing many
+quote types.
+
+..
+
+.. date: 2023-09-03-04-37-52
+.. gh-issue: 108469
+.. nonce: kusj40
+.. section: Library
+
+:func:`ast.unparse` now supports new :term:`f-string` syntax introduced in
+Python 3.12. Note that the :term:`f-string` quotes are reselected for
+simplicity under the new syntax. (Patch by Steven Sun)
+
+..
+
+.. date: 2023-09-01-13-14-08
+.. gh-issue: 108751
+.. nonce: 2itqwe
+.. section: Library
+
+Add :func:`copy.replace` function which allows to create a modified copy of
+an object. It supports named tuples, dataclasses, and many other objects.
+
+..
+
+.. date: 2023-08-30-20-10-28
+.. gh-issue: 108682
+.. nonce: c2gzLQ
+.. section: Library
+
+Enum: raise :exc:`TypeError` if ``super().__new__()`` is called from a
+custom ``__new__``.
+
+..
+
+.. date: 2023-08-29-11-29-15
+.. gh-issue: 108278
+.. nonce: -UhsnJ
+.. section: Library
+
+Deprecate passing the callback callable by keyword for the following
+:class:`sqlite3.Connection` APIs:
+
+* :meth:`~sqlite3.Connection.set_authorizer`
+* :meth:`~sqlite3.Connection.set_progress_handler`
+* :meth:`~sqlite3.Connection.set_trace_callback`
+
+The affected parameters will become positional-only in Python 3.15.
+
+Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-08-26-12-35-39
+.. gh-issue: 105829
+.. nonce: kyYhWI
+.. section: Library
+
+Fix concurrent.futures.ProcessPoolExecutor deadlock
+
+..
+
+.. date: 2023-08-26-08-38-57
+.. gh-issue: 108295
+.. nonce: Pn0QRM
+.. section: Library
+
+Fix crashes related to use of weakrefs on :data:`typing.TypeVar`.
+
+..
+
+.. date: 2023-08-25-00-14-34
+.. gh-issue: 108463
+.. nonce: mQApp_
+.. section: Library
+
+Make expressions/statements work as expected in pdb
+
+..
+
+.. date: 2023-08-23-22-08-32
+.. gh-issue: 108277
+.. nonce: KLV-6T
+.. section: Library
+
+Add :func:`os.timerfd_create`, :func:`os.timerfd_settime`,
+:func:`os.timerfd_gettime`, :func:`os.timerfd_settime_ns`, and
+:func:`os.timerfd_gettime_ns` to provide a low level interface for Linux's
+timer notification file descriptor.
+
+..
+
+.. date: 2023-08-23-17-34-39
+.. gh-issue: 107811
+.. nonce: 3Fng72
+.. section: Library
+
+:mod:`tarfile`: extraction of members with overly large UID or GID (e.g. on
+an OS with 32-bit :c:type:`!id_t`) now fails in the same way as failing to
+set the ID.
+
+..
+
+.. date: 2023-08-22-22-29-42
+.. gh-issue: 64662
+.. nonce: jHl_Bt
+.. section: Library
+
+Fix support for virtual tables in :meth:`sqlite3.Connection.iterdump`. Patch
+by Aviv Palivoda.
+
+..
+
+.. date: 2023-08-22-17-27-12
+.. gh-issue: 108111
+.. nonce: N7a4u_
+.. section: Library
+
+Fix a regression introduced in GH-101251 for 3.12, resulting in an incorrect
+offset calculation in :meth:`gzip.GzipFile.seek`.
+
+..
+
+.. date: 2023-08-22-16-18-49
+.. gh-issue: 108294
+.. nonce: KEeUcM
+.. section: Library
+
+:func:`time.sleep` now raises an auditing event.
+
+..
+
+.. date: 2023-08-22-13-51-10
+.. gh-issue: 108278
+.. nonce: 11d_qG
+.. section: Library
+
+Deprecate passing name, number of arguments, and the callable as keyword
+arguments, for the following :class:`sqlite3.Connection` APIs:
+
+* :meth:`~sqlite3.Connection.create_function`
+* :meth:`~sqlite3.Connection.create_aggregate`
+
+The affected parameters will become positional-only in Python 3.15.
+
+Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-08-22-12-05-47
+.. gh-issue: 108322
+.. nonce: kf3NJX
+.. section: Library
+
+Speed-up NormalDist.samples() by using the inverse CDF method instead of
+calling random.gauss().
+
+..
+
+.. date: 2023-08-18-22-58-07
+.. gh-issue: 83417
+.. nonce: 61J4yM
+.. section: Library
+
+Add the ability for venv to create a ``.gitignore`` file which causes the
+created environment to be ignored by Git. It is on by default when venv is
+called via its CLI.
+
+..
+
+.. date: 2023-08-17-14-45-25
+.. gh-issue: 105736
+.. nonce: NJsH7r
+.. section: Library
+
+Harmonized the pure Python version of :class:`~collections.OrderedDict` with
+the C version. Now, both versions set up their internal state in
+``__new__``.  Formerly, the pure Python version did the set up in
+``__init__``.
+
+..
+
+.. date: 2023-08-17-12-59-35
+.. gh-issue: 108083
+.. nonce: 9J7UcT
+.. section: Library
+
+Fix bugs in the constructor of :mod:`sqlite3.Connection` and
+:meth:`sqlite3.Connection.close` where exceptions could be leaked. Patch by
+Erlend E. Aasland.
+
+..
+
+.. date: 2023-08-16-21-20-55
+.. gh-issue: 107932
+.. nonce: I7hFsp
+.. section: Library
+
+Fix ``dis`` module to properly report and display bytecode that do not have
+source lines.
+
+..
+
+.. date: 2023-08-16-14-30-13
+.. gh-issue: 105539
+.. nonce: 29lA6c
+.. section: Library
+
+:mod:`sqlite3` now emits an :exc:`ResourceWarning` if a
+:class:`sqlite3.Connection` object is not :meth:`closed
+<sqlite3.connection.close>` explicitly. Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-08-16-00-24-07
+.. gh-issue: 107995
+.. nonce: TlTp5t
+.. section: Library
+
+The ``__module__`` attribute on instances of
+:class:`functools.cached_property` is now set to the name of the module in
+which the cached_property is defined, rather than "functools". This means
+that doctests in ``cached_property`` docstrings are now properly collected
+by the :mod:`doctest` module. Patch by Tyler Smart.
+
+..
+
+.. date: 2023-08-15-18-20-00
+.. gh-issue: 107963
+.. nonce: 20g5BG
+.. section: Library
+
+Fix :func:`multiprocessing.set_forkserver_preload` to check the given list
+of modules names. Patch by Donghee Na.
+
+..
+
+.. date: 2023-08-14-23-11-11
+.. gh-issue: 106242
+.. nonce: 71HMym
+.. section: Library
+
+Fixes :func:`os.path.normpath` to handle embedded null characters without
+truncating the path.
+
+..
+
+.. date: 2023-08-14-20-18-59
+.. gh-issue: 81555
+.. nonce: cWdP4a
+.. section: Library
+
+:mod:`xml.dom.minidom` now only quotes ``"`` in attributes.
+
+..
+
+.. date: 2023-08-14-20-01-14
+.. gh-issue: 50002
+.. nonce: E-bpj8
+.. section: Library
+
+:mod:`xml.dom.minidom` now preserves whitespaces in attributes.
+
+..
+
+.. date: 2023-08-14-19-49-02
+.. gh-issue: 93057
+.. nonce: 5nJwO5
+.. section: Library
+
+Passing more than one positional argument to :func:`sqlite3.connect` and the
+:class:`sqlite3.Connection` constructor is deprecated. The remaining
+parameters will become keyword-only in Python 3.15. Patch by Erlend E.
+Aasland.
+
+..
+
+.. date: 2023-08-14-17-15-59
+.. gh-issue: 76913
+.. nonce: LLD0rT
+.. section: Library
+
+Add *merge_extra* parameter/feature to :class:`logging.LoggerAdapter`
+
+..
+
+.. date: 2023-08-14-11-18-13
+.. gh-issue: 107913
+.. nonce: 4ooY6i
+.. section: Library
+
+Fix possible losses of ``errno`` and ``winerror`` values in :exc:`OSError`
+exceptions if they were cleared or modified by the cleanup code before
+creating the exception object.
+
+..
+
+.. date: 2023-08-10-17-36-22
+.. gh-issue: 107845
+.. nonce: dABiMJ
+.. section: Library
+
+:func:`tarfile.data_filter` now takes the location of symlinks into account
+when determining their target, so it will no longer reject some valid
+tarballs with ``LinkOutsideDestinationError``.
+
+..
+
+.. date: 2023-08-09-15-37-20
+.. gh-issue: 107812
+.. nonce: CflAXa
+.. section: Library
+
+Extend socket's netlink support to the FreeBSD platform.
+
+..
+
+.. date: 2023-08-09-13-49-37
+.. gh-issue: 107805
+.. nonce: ezem0k
+.. section: Library
+
+Fix signatures of module-level generated functions in :mod:`turtle`.
+
+..
+
+.. date: 2023-08-08-19-57-45
+.. gh-issue: 107782
+.. nonce: mInjFE
+.. section: Library
+
+:mod:`pydoc` is now able to show signatures which are not representable in
+Python, e.g. for ``getattr`` and ``dict.pop``.
+
+..
+
+.. date: 2023-08-08-16-09-59
+.. gh-issue: 56166
+.. nonce: WUMhYG
+.. section: Library
+
+Deprecate passing optional arguments *maxsplit*, *count* and *flags* in
+module-level functions :func:`re.split`, :func:`re.sub` and :func:`re.subn`
+as positional. They should only be passed by keyword.
+
+..
+
+.. date: 2023-08-07-14-24-42
+.. gh-issue: 107710
+.. nonce: xfOCfj
+.. section: Library
+
+Speed up :func:`logging.getHandlerNames`.
+
+..
+
+.. date: 2023-08-07-14-12-07
+.. gh-issue: 107715
+.. nonce: 238r2f
+.. section: Library
+
+Fix :meth:`doctest.DocTestFinder.find` in presence of class names with
+special characters. Patch by Gertjan van Zwieten.
+
+..
+
+.. date: 2023-08-06-15-29-00
+.. gh-issue: 100814
+.. nonce: h195gW
+.. section: Library
+
+Passing a callable object as an option value to a Tkinter image now raises
+the expected TclError instead of an AttributeError.
+
+..
+
+.. date: 2023-08-06-10-52-12
+.. gh-issue: 72684
+.. nonce: Ls2mSf
+.. section: Library
+
+Add :mod:`tkinter` widget methods: :meth:`!tk_busy_hold`,
+:meth:`!tk_busy_configure`, :meth:`!tk_busy_cget`, :meth:`!tk_busy_forget`,
+:meth:`!tk_busy_current`, and :meth:`!tk_busy_status`.
+
+..
+
+.. date: 2023-08-05-05-10-41
+.. gh-issue: 106684
+.. nonce: P9zRXb
+.. section: Library
+
+Raise :exc:`ResourceWarning` when :class:`asyncio.StreamWriter` is not
+closed leading to memory leaks. Patch by Kumar Aditya.
+
+..
+
+.. date: 2023-08-04-19-00-53
+.. gh-issue: 107465
+.. nonce: Vc1Il3
+.. section: Library
+
+Add :meth:`pathlib.Path.from_uri` classmethod.
+
+..
+
+.. date: 2023-08-03-12-52-19
+.. gh-issue: 107077
+.. nonce: -pzHD6
+.. section: Library
+
+Seems that in some conditions, OpenSSL will return ``SSL_ERROR_SYSCALL``
+instead of ``SSL_ERROR_SSL`` when a certification verification has failed,
+but the error parameters will still contain ``ERR_LIB_SSL`` and
+``SSL_R_CERTIFICATE_VERIFY_FAILED``. We are now detecting this situation and
+raising the appropiate ``ssl.SSLCertVerificationError``. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2023-08-03-11-31-11
+.. gh-issue: 107576
+.. nonce: pO_s9I
+.. section: Library
+
+Fix :func:`types.get_original_bases` to only return :attr:`!__orig_bases__`
+if it is present on ``cls`` directly. Patch by James Hilton-Balfe.
+
+..
+
+.. date: 2023-08-01-21-43-58
+.. gh-issue: 105481
+.. nonce: cl2ajS
+.. section: Library
+
+Remove ``opcode.is_pseudo``, ``opcode.MIN_PSEUDO_OPCODE`` and
+``opcode.MAX_PSEUDO_OPCODE``, which were added in 3.12, were never
+documented and were not intended to be used externally.
+
+..
+
+.. date: 2023-08-01-15-17-20
+.. gh-issue: 105481
+.. nonce: vMbmj_
+.. section: Library
+
+:data:`opcode.ENABLE_SPECIALIZATION` (which was added in 3.12 but never
+documented or intended for external usage) is moved to
+:data:`_opcode.ENABLE_SPECIALIZATION` where tests can access it.
+
+..
+
+.. date: 2023-07-31-07-36-24
+.. gh-issue: 107396
+.. nonce: 3_Kh6D
+.. section: Library
+
+tarfiles; Fixed use before assignment of self.exception for gzip
+decompression
+
+..
+
+.. date: 2023-07-29-02-36-50
+.. gh-issue: 107409
+.. nonce: HG27Nu
+.. section: Library
+
+Set :attr:`!__wrapped__` attribute in :func:`reprlib.recursive_repr`.
+
+..
+
+.. date: 2023-07-29-02-01-24
+.. gh-issue: 107406
+.. nonce: ze6sQP
+.. section: Library
+
+Implement new :meth:`__repr__` method for :class:`struct.Struct`. Now it
+returns ``Struct(<format repr>)``.
+
+..
+
+.. date: 2023-07-28-14-56-35
+.. gh-issue: 107369
+.. nonce: bvTq8F
+.. section: Library
+
+Optimize :func:`textwrap.indent`. It is ~30% faster for large input. Patch
+by Inada Naoki.
+
+..
+
+.. date: 2023-07-26-22-52-48
+.. gh-issue: 78722
+.. nonce: 6SKBLt
+.. section: Library
+
+Fix issue where :meth:`pathlib.Path.iterdir` did not raise :exc:`OSError`
+until iterated.
+
+..
+
+.. date: 2023-07-23-13-05-32
+.. gh-issue: 105578
+.. nonce: XAQtyR
+.. section: Library
+
+Deprecate :class:`typing.AnyStr` in favor of the new Type Parameter syntax.
+See PEP 695.
+
+..
+
+.. date: 2023-07-23-12-26-23
+.. gh-issue: 62519
+.. nonce: w8-81X
+.. section: Library
+
+Make :func:`gettext.pgettext` search plural definitions when translation is
+not found.
+
+..
+
+.. date: 2023-07-22-21-57-34
+.. gh-issue: 107089
+.. nonce: Dnget2
+.. section: Library
+
+Shelves opened with :func:`shelve.open` have a much faster :meth:`clear`
+method. Patch by James Cave.
+
+..
+
+.. date: 2023-07-22-16-44-58
+.. gh-issue: 82500
+.. nonce: cQYoPj
+.. section: Library
+
+Fix overflow on 32-bit systems with :mod:`asyncio` :func:`os.sendfile`
+implemention.
+
+..
+
+.. date: 2023-07-22-15-51-33
+.. gh-issue: 83006
+.. nonce: 21zaCz
+.. section: Library
+
+Document behavior of :func:`shutil.disk_usage` for non-mounted filesystems
+on Unix.
+
+..
+
+.. date: 2023-07-22-14-29-34
+.. gh-issue: 65495
+.. nonce: fw84qM
+.. section: Library
+
+Use lowercase ``mail from`` and ``rcpt to`` in :class:`smptlib.SMTP`.
+
+..
+
+.. date: 2023-07-22-13-09-28
+.. gh-issue: 106186
+.. nonce: EIsUNG
+.. section: Library
+
+Do not report ``MultipartInvariantViolationDefect`` defect when the
+:class:`email.parser.Parser` class is used to parse emails with
+``headersonly=True``.
+
+..
+
+.. date: 2023-07-22-12-53-53
+.. gh-issue: 105002
+.. nonce: gkfsW0
+.. section: Library
+
+Fix invalid result from :meth:`PurePath.relative_to` method when attempting
+to walk a "``..``" segment in *other* with *walk_up* enabled. A
+:exc:`ValueError` exception is now raised in this case.
+
+..
+
+.. date: 2023-07-20-06-00-35
+.. gh-issue: 106739
+.. nonce: W1hygr
+.. section: Library
+
+Add the ``rtype_cache`` to the warning message (as an addition to the type
+of leaked objects and the number of leaked objects already included in the
+message) to make debugging leaked objects easier when the multiprocessing
+resource tracker process finds leaked objects at shutdown. This helps more
+quickly identify what was leaked and/or why the leaked object was not
+properly cleaned up.
+
+..
+
+.. date: 2023-07-19-10-45-24
+.. gh-issue: 106751
+.. nonce: 3HJ1of
+.. section: Library
+
+Optimize :meth:`SelectSelector.select` for many iteration case. Patch By
+Donghee Na.
+
+..
+
+.. date: 2023-07-19-09-11-08
+.. gh-issue: 106751
+.. nonce: U9nD_B
+.. section: Library
+
+Optimize :meth:`_PollLikeSelector.select` for many iteration case.
+
+..
+
+.. date: 2023-07-18-23-05-12
+.. gh-issue: 106751
+.. nonce: tVvzN_
+.. section: Library
+
+Optimize :meth:`KqueueSelector.select` for many iteration case. Patch By
+Donghee Na.
+
+..
+
+.. date: 2023-07-17-21-45-15
+.. gh-issue: 106831
+.. nonce: RqVq9X
+.. section: Library
+
+Fix potential missing ``NULL`` check of ``d2i_SSL_SESSION`` result in
+``_ssl.c``.
+
+..
+
+.. date: 2023-07-17-16-46-00
+.. gh-issue: 105481
+.. nonce: fek_Nn
+.. section: Library
+
+The various opcode lists in the :mod:`dis` module are now generated from
+bytecodes.c instead of explicitly constructed in opcode.py.
+
+..
+
+.. date: 2023-07-16-23-59-33
+.. gh-issue: 106727
+.. nonce: bk3uCu
+.. section: Library
+
+Make :func:`inspect.getsource` smarter for class for same name definitions
+
+..
+
+.. date: 2023-07-16-10-40-34
+.. gh-issue: 106789
+.. nonce: NvyE3C
+.. section: Library
+
+Remove import of :mod:`pprint` from :mod:`sysconfig`.
+
+..
+
+.. date: 2023-07-15-12-52-50
+.. gh-issue: 105726
+.. nonce: NGthO8
+.. section: Library
+
+Added ``__slots__`` to :class:`contextlib.AbstractContextManager` and
+:class:`contextlib.AbstractAsyncContextManager` so that child classes can
+use ``__slots__``.
+
+..
+
+.. date: 2023-07-15-10-24-56
+.. gh-issue: 106774
+.. nonce: FJcqCj
+.. section: Library
+
+Update the bundled copy of pip to version 23.2.1.
+
+..
+
+.. date: 2023-07-14-20-31-09
+.. gh-issue: 106751
+.. nonce: 52F6yQ
+.. section: Library
+
+:mod:`selectors`: Optimize ``EpollSelector.select()`` code by moving some
+code outside of the loop.
+
+..
+
+.. date: 2023-07-14-16-54-13
+.. gh-issue: 106752
+.. nonce: BT1Yxw
+.. section: Library
+
+Fixed several bugs in zipfile.Path, including: in
+:meth:`zipfile.Path.match`, Windows separators are no longer honored (and
+never were meant to be); Fixed ``name``/``suffix``/``suffixes``/``stem``
+operations when no filename is present and the Path is not at the root of
+the zipfile; Reworked glob for performance and more correct matching
+behavior.
+
+..
+
+.. date: 2023-07-14-14-53-58
+.. gh-issue: 105293
+.. nonce: kimf_i
+.. section: Library
+
+Remove call to ``SSL_CTX_set_session_id_context`` during client side context
+creation in the :mod:`ssl` module.
+
+..
+
+.. date: 2023-07-14-01-47-39
+.. gh-issue: 106734
+.. nonce: eMYSoz
+.. section: Library
+
+Disable tab completion in multiline mode of :mod:`pdb`
+
+..
+
+.. date: 2023-07-13-16-04-15
+.. gh-issue: 105481
+.. nonce: pYSwMj
+.. section: Library
+
+Expose opcode metadata through :mod:`_opcode`.
+
+..
+
+.. date: 2023-07-12-10-59-08
+.. gh-issue: 106670
+.. nonce: goQ2Sy
+.. section: Library
+
+Add the new ``exceptions`` command to the Pdb debugger. It makes it possible
+to move between chained exceptions when using post mortem debugging.
+
+..
+
+.. date: 2023-07-12-04-58-45
+.. gh-issue: 106602
+.. nonce: dGCcXe
+.. section: Library
+
+Add __copy__ and __deepcopy__ in :mod:`enum`
+
+..
+
+.. date: 2023-07-12-03-04-45
+.. gh-issue: 106664
+.. nonce: ZeUG78
+.. section: Library
+
+:mod:`selectors`: Add ``_SelectorMapping.get()`` method and optimize
+``_SelectorMapping.__getitem__()``.
+
+..
+
+.. date: 2023-07-11-16-36-22
+.. gh-issue: 106628
+.. nonce: Kx8Zvc
+.. section: Library
+
+Speed up parsing of emails by about 20% by not compiling a new regular
+expression for every single email.
+
+..
+
+.. date: 2023-07-11-12-34-04
+.. gh-issue: 89427
+.. nonce: GOkCp9
+.. section: Library
+
+Set the environment variable ``VIRTUAL_ENV_PROMPT`` at :mod:`venv`
+activation, even when ``VIRTUAL_ENV_DISABLE_PROMPT`` is set.
+
+..
+
+.. date: 2023-07-11-09-25-40
+.. gh-issue: 106530
+.. nonce: VgXrMx
+.. section: Library
+
+Revert a change to :func:`colorsys.rgb_to_hls` that caused division by zero
+for certain almost-white inputs.  Patch by Terry Jan Reedy.
+
+..
+
+.. date: 2023-07-11-08-56-40
+.. gh-issue: 106584
+.. nonce: g-SBtC
+.. section: Library
+
+Fix exit code for ``unittest`` if all tests are skipped. Patch by Egor
+Eliseev.
+
+..
+
+.. date: 2023-07-09-13-10-54
+.. gh-issue: 106566
+.. nonce: NN35-U
+.. section: Library
+
+Optimize ``(?!)`` (pattern which alwais fails) in regular expressions.
+
+..
+
+.. date: 2023-07-09-01-59-24
+.. gh-issue: 106554
+.. nonce: 37c53J
+.. section: Library
+
+:mod:`selectors`: Reduce Selector overhead by using a ``dict.get()`` to
+lookup file descriptors.
+
+..
+
+.. date: 2023-07-09-00-36-33
+.. gh-issue: 106558
+.. nonce: Zqsj6F
+.. section: Library
+
+Remove ref cycle in callers of
+:func:`~multiprocessing.managers.convert_to_error` by deleting ``result``
+from scope in a ``finally`` block.
+
+..
+
+.. date: 2023-07-07-21-15-17
+.. gh-issue: 100502
+.. nonce: Iici1B
+.. section: Library
+
+Add :attr:`pathlib.PurePath.pathmod` class attribute that stores the
+implementation of :mod:`os.path` used for low-level path operations: either
+``posixpath`` or ``ntpath``.
+
+..
+
+.. date: 2023-07-07-18-22-07
+.. gh-issue: 106527
+.. nonce: spHQ0W
+.. section: Library
+
+Reduce overhead to add and remove :mod:`asyncio` readers and writers.
+
+..
+
+.. date: 2023-07-07-17-44-03
+.. gh-issue: 106524
+.. nonce: XkBV8h
+.. section: Library
+
+Fix crash in :func:`!_sre.template` with templates containing invalid group
+indices.
+
+..
+
+.. date: 2023-07-07-16-19-59
+.. gh-issue: 106531
+.. nonce: eMfNm8
+.. section: Library
+
+Removed ``_legacy`` and the names it provided from ``importlib.resources``:
+``Resource``, ``contents``, ``is_resource``, ``open_binary``, ``open_text``,
+``path``, ``read_binary``, and ``read_text``.
+
+..
+
+.. date: 2023-07-07-14-52-31
+.. gh-issue: 106052
+.. nonce: ak8nbs
+.. section: Library
+
+:mod:`re` module: fix the matching of possessive quantifiers in the case of
+a subpattern containing backtracking.
+
+..
+
+.. date: 2023-07-07-13-47-28
+.. gh-issue: 106510
+.. nonce: 9n5BdC
+.. section: Library
+
+Improve debug output for atomic groups in regular expressions.
+
+..
+
+.. date: 2023-07-07-03-05-58
+.. gh-issue: 106503
+.. nonce: ltfeiH
+.. section: Library
+
+Fix ref cycle in :class:`!asyncio._SelectorSocketTransport` by removing
+``_write_ready`` in ``close``.
+
+..
+
+.. date: 2023-07-05-14-34-10
+.. gh-issue: 105497
+.. nonce: HU5u89
+.. section: Library
+
+Fix flag mask inversion when unnamed flags exist.
+
+..
+
+.. date: 2023-07-05-13-08-23
+.. gh-issue: 90876
+.. nonce: Qvlkfl
+.. section: Library
+
+Prevent :mod:`multiprocessing.spawn` from failing to *import* in
+environments where ``sys.executable`` is ``None``.  This regressed in 3.11
+with the addition of support for path-like objects in multiprocessing.
+
+..
+
+.. date: 2023-07-04-07-25-30
+.. gh-issue: 106403
+.. nonce: GmefbV
+.. section: Library
+
+Instances of :class:`typing.TypeVar`, :class:`typing.ParamSpec`,
+:class:`typing.ParamSpecArgs`, :class:`typing.ParamSpecKwargs`, and
+:class:`typing.TypeVarTuple` once again support weak references, fixing a
+regression introduced in Python 3.12.0 beta 1. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-07-03-20-23-56
+.. gh-issue: 89812
+.. nonce: cFkDOE
+.. section: Library
+
+Add private ``pathlib._PathBase`` class, which provides experimental support
+for virtual filesystems, and may be made public in a future version of
+Python.
+
+..
+
+.. date: 2023-07-03-15-09-44
+.. gh-issue: 106292
+.. nonce: 3npldV
+.. section: Library
+
+Check for an instance-dict cached value in the :meth:`__get__` method of
+:func:`functools.cached_property`. This better matches the pre-3.12 behavior
+and improves compatibility for users subclassing
+:func:`functools.cached_property` and adding a :meth:`__set__` method.
+
+..
+
+.. date: 2023-07-03-03-46-20
+.. gh-issue: 106350
+.. nonce: LLcTEe
+.. section: Library
+
+Detect possible memory allocation failure in the libtommath function
+:c:func:`mp_init` used by the ``_tkinter`` module.
+
+..
+
+.. date: 2023-07-02-10-56-41
+.. gh-issue: 106330
+.. nonce: QSkIUH
+.. section: Library
+
+Fix incorrect matching of empty paths in :meth:`pathlib.PurePath.match`.
+This bug was introduced in Python 3.12.0 beta 1.
+
+..
+
+.. date: 2023-07-01-16-51-55
+.. gh-issue: 106309
+.. nonce: hSlB17
+.. section: Library
+
+Deprecate :func:`typing.no_type_check_decorator`. No major type checker ever
+added support for this decorator. Patch by Alex Waygood.
+
+..
+
+.. date: 2023-07-01-16-40-54
+.. gh-issue: 102541
+.. nonce: C1ahtk
+.. section: Library
+
+Make pydoc.doc catch bad module ImportError when output stream is not None.
+
+..
+
+.. date: 2023-06-30-16-42-44
+.. gh-issue: 106263
+.. nonce: tk-t93
+.. section: Library
+
+Fix crash when calling ``repr`` with a manually constructed SignalDict
+object. Patch by Charlie Zhao.
+
+..
+
+.. date: 2023-06-29-15-10-44
+.. gh-issue: 106236
+.. nonce: EAIX4l
+.. section: Library
+
+Replace ``assert`` statements with ``raise RuntimeError`` in
+:mod:`threading`, so that ``_DummyThread`` cannot be joined even with
+``-OO``.
+
+..
+
+.. date: 2023-06-29-12-40-52
+.. gh-issue: 106238
+.. nonce: VulKb9
+.. section: Library
+
+Fix rare concurrency bug in lock acquisition by the logging package.
+
+..
+
+.. date: 2023-06-27-23-22-37
+.. gh-issue: 106152
+.. nonce: ya5jBT
+.. section: Library
+
+Added PY_THROW event hook for :mod:`cProfile` for generators
+
+..
+
+.. date: 2023-06-25-12-28-55
+.. gh-issue: 106075
+.. nonce: W7tMRb
+.. section: Library
+
+Added ``asyncio.taskgroups.__all__`` to ``asyncio.__all__`` for export in
+star imports.
+
+..
+
+.. date: 2023-06-25-06-57-24
+.. gh-issue: 104527
+.. nonce: TJEUkd
+.. section: Library
+
+Zipapp will now skip over apending an archive to itself.
+
+..
+
+.. date: 2023-06-23-22-52-24
+.. gh-issue: 106046
+.. nonce: OdLiLJ
+.. section: Library
+
+Improve the error message from :func:`os.fspath` if called on an object
+where ``__fspath__`` is set to ``None``. Patch by Alex Waygood.
+
+..
+
+.. date: 2023-06-22-15-21-11
+.. gh-issue: 105987
+.. nonce: T7Kzrb
+.. section: Library
+
+Fix crash due to improper reference counting in :mod:`asyncio` eager task
+factory internal routines.
+
+..
+
+.. date: 2023-06-21-19-04-27
+.. gh-issue: 105974
+.. nonce: M47n3t
+.. section: Library
+
+Fix bug where a :class:`typing.Protocol` class that had one or more
+non-callable members would raise :exc:`TypeError` when :func:`issubclass`
+was called against it, even if it defined a custom ``__subclasshook__``
+method. The behaviour in Python 3.11 and lower -- which has now been
+restored -- was not to raise :exc:`TypeError` in these situations if a
+custom ``__subclasshook__`` method was defined. Patch by Alex Waygood.
+
+..
+
+.. date: 2023-06-20-23-18-45
+.. gh-issue: 96145
+.. nonce: o5dTRM
+.. section: Library
+
+Reverted addition of ``json.AttrDict``.
+
+..
+
+.. date: 2023-06-19-22-20-41
+.. gh-issue: 89812
+.. nonce: z2l_e8
+.. section: Library
+
+Add :exc:`pathlib.UnsupportedOperation`, which is raised instead of
+:exc:`NotImplementedError` when a path operation isn't supported.
+
+..
+
+.. date: 2023-06-19-11-31-55
+.. gh-issue: 105808
+.. nonce: NL-quu
+.. section: Library
+
+Fix a regression introduced in GH-101251 for 3.12, causing
+:meth:`gzip.GzipFile.flush` to not flush the compressor (nor pass along the
+``zip_mode`` argument).
+
+..
+
+.. date: 2023-06-17-12-13-57
+.. gh-issue: 105481
+.. nonce: KgBH5w
+.. section: Library
+
+:func:`~dis.stack_effect` no longer raises an exception if an ``oparg`` is
+provided for an ``opcode`` that doesn't use its arg, or when it is not
+provided for an ``opcode`` that does use it. In the latter case, the stack
+effect is returned for ``oparg=0``.
+
+..
+
+.. date: 2023-06-15-18-11-47
+.. gh-issue: 104799
+.. nonce: BcLzbP
+.. section: Library
+
+Enable :func:`ast.unparse` to unparse function and class definitions created
+without the new ``type_params`` field from :pep:`695`. Patch by Jelle
+Zijlstra.
+
+..
+
+.. date: 2023-06-14-18-41-18
+.. gh-issue: 105793
+.. nonce: YSoykM
+.. section: Library
+
+Add *follow_symlinks* keyword-only argument to :meth:`pathlib.Path.is_dir`
+and :meth:`~pathlib.Path.is_file`, defaulting to ``True``.
+
+..
+
+.. date: 2023-06-14-14-32-31
+.. gh-issue: 105570
+.. nonce: sFTtQU
+.. section: Library
+
+Deprecate two methods of creating :class:`typing.TypedDict` classes with 0
+fields using the functional syntax: ``TD = TypedDict("TD")`` and ``TD =
+TypedDict("TD", None)``. Both will be disallowed in Python 3.15. To create a
+``TypedDict`` class with 0 fields, either use ``class TD(TypedDict): pass``
+or ``TD = TypedDict("TD", {})``.
+
+..
+
+.. date: 2023-06-14-10-27-34
+.. gh-issue: 105745
+.. nonce: l1ttOQ
+.. section: Library
+
+Fix ``webbrowser.Konqueror.open`` method.
+
+..
+
+.. date: 2023-06-13-19-38-12
+.. gh-issue: 105733
+.. nonce: WOp0mG
+.. section: Library
+
+:mod:`ctypes`: Deprecate undocumented :func:`!ctypes.SetPointerType` and
+:func:`!ctypes.ARRAY` functions. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-12-15-17-34
+.. gh-issue: 105687
+.. nonce: ZUonKm
+.. section: Library
+
+Remove deprecated ``re.template``, ``re.T``, ``re.TEMPLATE``,
+``sre_constans.SRE_FLAG_TEMPLATE``.
+
+..
+
+.. date: 2023-06-12-10-40-38
+.. gh-issue: 105684
+.. nonce: yiHkFD
+.. section: Library
+
+Supporting :meth:`asyncio.Task.set_name` is now mandatory for third party
+task implementations. The undocumented :func:`!_set_task_name` function
+(deprecated since 3.8) has been removed. Patch by Kumar Aditya.
+
+..
+
+.. date: 2023-06-11-22-46-06
+.. gh-issue: 105375
+.. nonce: YkhSNt
+.. section: Library
+
+Fix a bug in :c:func:`!_Unpickler_SetInputStream` where an exception could
+end up being overwritten in case of failure.
+
+..
+
+.. date: 2023-06-10-12-20-17
+.. gh-issue: 105626
+.. nonce: XyZein
+.. section: Library
+
+Change the default return value of
+:meth:`http.client.HTTPConnection.get_proxy_response_headers` to be ``None``
+and not ``{}``.
+
+..
+
+.. date: 2023-06-09-23-46-23
+.. gh-issue: 105375
+.. nonce: 9KaioS
+.. section: Library
+
+Fix bugs in :mod:`sys` where exceptions could end up being overwritten
+because of deferred error handling.
+
+..
+
+.. date: 2023-06-09-23-00-13
+.. gh-issue: 105605
+.. nonce: YuwqxY
+.. section: Library
+
+Harden :mod:`pyexpat` error handling during module initialisation to prevent
+exceptions from possibly being overwritten, and objects from being
+dereferenced twice.
+
+..
+
+.. date: 2023-06-09-22-52-45
+.. gh-issue: 105375
+.. nonce: 6igkhn
+.. section: Library
+
+Fix bug in :mod:`decimal` where an exception could end up being overwritten.
+
+..
+
+.. date: 2023-06-09-22-45-26
+.. gh-issue: 105375
+.. nonce: 9rp6tG
+.. section: Library
+
+Fix bugs in :mod:`!_datetime` where exceptions could be overwritten in case
+of module initialisation failure.
+
+..
+
+.. date: 2023-06-09-22-16-46
+.. gh-issue: 105375
+.. nonce: EgVJOP
+.. section: Library
+
+Fix bugs in :mod:`!_ssl` initialisation which could lead to leaked
+references and overwritten exceptions.
+
+..
+
+.. date: 2023-06-09-21-46-52
+.. gh-issue: 105375
+.. nonce: yrJelV
+.. section: Library
+
+Fix a bug in :class:`array.array` where an exception could end up being
+overwritten.
+
+..
+
+.. date: 2023-06-09-21-40-45
+.. gh-issue: 105375
+.. nonce: _sZilh
+.. section: Library
+
+Fix bugs in :mod:`_ctypes` where exceptions could end up being overwritten.
+
+..
+
+.. date: 2023-06-09-21-30-59
+.. gh-issue: 105375
+.. nonce: eewafp
+.. section: Library
+
+Fix a bug in the :mod:`posix` module where an exception could be
+overwritten.
+
+..
+
+.. date: 2023-06-09-21-25-14
+.. gh-issue: 105375
+.. nonce: 95g1eI
+.. section: Library
+
+Fix bugs in :mod:`!_elementtree` where exceptions could be overwritten.
+
+..
+
+.. date: 2023-06-09-21-11-28
+.. gh-issue: 105375
+.. nonce: 4Mxn7t
+.. section: Library
+
+Fix bugs in :mod:`zoneinfo` where exceptions could be overwritten.
+
+..
+
+.. date: 2023-06-09-21-04-39
+.. gh-issue: 105375
+.. nonce: bTcqS9
+.. section: Library
+
+Fix bugs in :mod:`errno` where exceptions could be overwritten.
+
+..
+
+.. date: 2023-06-09-20-34-23
+.. gh-issue: 105566
+.. nonce: YxlGg1
+.. section: Library
+
+Deprecate creating a :class:`typing.NamedTuple` class using keyword
+arguments to denote the fields (``NT = NamedTuple("NT", x=int, y=str)``).
+This will be disallowed in Python 3.15. Use the class-based syntax or the
+functional syntax instead.
+
+Two methods of creating ``NamedTuple`` classes with 0 fields using the
+functional syntax are also deprecated, and will be disallowed in Python
+3.15: ``NT = NamedTuple("NT")`` and ``NT = NamedTuple("NT", None)``. To
+create a ``NamedTuple`` class with 0 fields, either use ``class
+NT(NamedTuple): pass`` or ``NT = NamedTuple("NT", [])``.
+
+..
+
+.. date: 2023-06-09-08-38-30
+.. gh-issue: 105545
+.. nonce: 2q3ysu
+.. section: Library
+
+Remove deprecated in 3.11 ``webbrowser.MacOSXOSAScript._name`` attribute.
+
+..
+
+.. date: 2023-06-08-17-49-46
+.. gh-issue: 105497
+.. nonce: K6Q8nU
+.. section: Library
+
+Fix flag inversion when alias/mask members exist.
+
+..
+
+.. date: 2023-06-08-15-56-45
+.. gh-issue: 105509
+.. nonce: YIG57j
+.. section: Library
+
+:data:`typing.Annotated` is now implemented as an instance of
+``typing._SpecialForm`` rather than a class. This should have no user-facing
+impact for users of the :mod:`typing` module public API.
+
+..
+
+.. date: 2023-06-08-08-58-36
+.. gh-issue: 105375
+.. nonce: bTcqS9
+.. section: Library
+
+Fix bugs in :mod:`pickle` where exceptions could be overwritten.
+
+..
+
+.. date: 2023-06-07-00-13-00
+.. gh-issue: 70303
+.. nonce: frwUKH
+.. section: Library
+
+Emit :exc:`FutureWarning` from :meth:`pathlib.Path.glob` and
+:meth:`~pathlib.Path.rglob` if the given pattern ends with "``**``". In a
+future Python release, patterns with this ending will match both files and
+directories. Add a trailing slash to only match directories.
+
+..
+
+.. date: 2023-06-07-00-09-52
+.. gh-issue: 105375
+.. nonce: Y_9D4n
+.. section: Library
+
+Fix a bug in :mod:`sqlite3` where an exception could be overwritten in the
+:meth:`collation <sqlite3.Connection.create_collation>` callback.
+
+..
+
+.. date: 2023-06-06-16-00-03
+.. gh-issue: 105382
+.. nonce: A1LgzA
+.. section: Library
+
+Remove *cafile*, *capath* and *cadefault* parameters of the
+:func:`urllib.request.urlopen` function, deprecated in Python 3.6. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-06-06-15-32-44
+.. gh-issue: 105376
+.. nonce: W4oDQp
+.. section: Library
+
+:mod:`logging`: Remove undocumented and untested ``Logger.warn()`` and
+``LoggerAdapter.warn()`` methods and ``logging.warn()`` function. Deprecated
+since Python 3.3, they were aliases to the :meth:`logging.Logger.warning`
+method, :meth:`!logging.LoggerAdapter.warning` method and
+:func:`logging.warning` function. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-06-11-50-33
+.. gh-issue: 105332
+.. nonce: tmpgRA
+.. section: Library
+
+Revert pickling method from by-name back to by-value.
+
+..
+
+.. date: 2023-06-05-14-43-56
+.. gh-issue: 104554
+.. nonce: pwfKIo
+.. section: Library
+
+Add RTSPS scheme support in urllib.parse
+
+..
+
+.. date: 2023-06-04-23-20-56
+.. gh-issue: 105292
+.. nonce: ns6XQR
+.. section: Library
+
+Add option to :func:`traceback.format_exception_only` to recurse into the
+nested exception of a :exc:`BaseExceptionGroup`.
+
+..
+
+.. date: 2023-06-04-12-16-47
+.. gh-issue: 105280
+.. nonce: srRbCe
+.. section: Library
+
+Fix bug where ``isinstance([], collections.abc.Mapping)`` could evaluate to
+``True`` if garbage collection happened at the wrong time. The bug was
+caused by changes to the implementation of :class:`typing.Protocol` in
+Python 3.12.
+
+..
+
+.. date: 2023-06-02-23-32-17
+.. gh-issue: 80480
+.. nonce: savBw9
+.. section: Library
+
+:mod:`array`: Add ``'w'`` typecode that represents ``Py_UCS4``.
+
+..
+
+.. date: 2023-06-02-14-57-11
+.. gh-issue: 105239
+.. nonce: SAmuuj
+.. section: Library
+
+Fix longstanding bug where ``issubclass(object, typing.Protocol)`` would
+evaluate to ``True`` in some edge cases. Patch by Alex Waygood.
+
+..
+
+.. date: 2023-06-02-14-23-41
+.. gh-issue: 104310
+.. nonce: UamCOB
+.. section: Library
+
+In the beta 1 release we added a utility function for extension module
+authors, to use when testing their module for support in multiple
+interpreters or under a per-interpreter GIL.  The name of that function has
+changed from ``allowing_all_extensions`` to
+``_incompatible_extension_module_restrictions``.  The default for the
+"disable_check" argument has change from ``True`` to ``False``, to better
+match the new function name.
+
+..
+
+.. date: 2023-06-02-02-38-26
+.. gh-issue: 105080
+.. nonce: 2imGMg
+.. section: Library
+
+Fixed inconsistent signature on derived classes for
+:func:`inspect.signature`
+
+..
+
+.. date: 2023-05-31-16-58-42
+.. gh-issue: 105144
+.. nonce: Oqfn0V
+.. section: Library
+
+Fix a recent regression in the :mod:`typing` module. The regression meant
+that doing ``class Foo(X, typing.Protocol)``, where ``X`` was a class that
+had :class:`abc.ABCMeta` as its metaclass, would then cause subsequent
+``isinstance(1, X)`` calls to erroneously raise :exc:`TypeError`. Patch by
+Alex Waygood.
+
+..
+
+.. date: 2023-05-30-18-45-02
+.. gh-issue: 62948
+.. nonce: 1-5wMR
+.. section: Library
+
+The :class:`io.IOBase` finalizer now logs the ``close()`` method errors with
+:data:`sys.unraisablehook`. Previously, errors were ignored silently by
+default, and only logged in :ref:`Python Development Mode <devmode>` or on
+:ref:`Python built on debug mode <debug-build>`.  Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-30-17-39-03
+.. gh-issue: 105096
+.. nonce: pw00FW
+.. section: Library
+
+:mod:`wave`: Deprecate the ``getmark()``, ``setmark()`` and ``getmarkers()``
+methods of the :class:`wave.Wave_read` and :class:`wave.Wave_write` classes.
+They will be removed in Python 3.15. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-26-21-33-24
+.. gh-issue: 104992
+.. nonce: dbq9WK
+.. section: Library
+
+Remove the untested and undocumented :meth:`!unittest.TestProgram.usageExit`
+method, deprecated in Python 3.11. Patch by Hugo van Kemenade.
+
+..
+
+.. date: 2023-05-26-21-24-06
+.. gh-issue: 104996
+.. nonce: aaW78g
+.. section: Library
+
+Improve performance of :class:`pathlib.PurePath` initialisation by deferring
+joining of paths when multiple arguments are given.
+
+..
+
+.. date: 2023-05-26-01-31-30
+.. gh-issue: 101588
+.. nonce: RaqxFy
+.. section: Library
+
+Deprecate undocumented copy/deepcopy/pickle support for itertools.
+
+..
+
+.. date: 2023-05-25-23-34-54
+.. gh-issue: 103631
+.. nonce: x5Urye
+.. section: Library
+
+Fix ``pathlib.PurePosixPath(pathlib.PureWindowsPath(...))`` not converting
+path separators to restore 3.11 compatible behavior.
+
+..
+
+.. date: 2023-05-25-22-54-20
+.. gh-issue: 104947
+.. nonce: hi6TUr
+.. section: Library
+
+Make comparisons between :class:`pathlib.PureWindowsPath` objects consistent
+across Windows and Posix to match 3.11 behavior.
+
+..
+
+.. date: 2023-05-25-17-25-16
+.. gh-issue: 104773
+.. nonce: O6TOMc
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!audioop` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-25-16-50-43
+.. gh-issue: 104773
+.. nonce: pmg0Fr
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!aifc` module, deprecated in Python 3.11. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2023-05-25-15-54-02
+.. gh-issue: 104773
+.. nonce: nW-5MI
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!uu` module, deprecated in Python 3.11. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2023-05-25-08-50-47
+.. gh-issue: 104935
+.. nonce: -rm1BR
+.. section: Library
+
+Fix bugs with the interaction between :func:`typing.runtime_checkable` and
+:class:`typing.Generic` that were introduced by the :pep:`695`
+implementation. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-25-00-53-08
+.. gh-issue: 104773
+.. nonce: Iyjtt0
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!crypt` module and its private :mod:`!_crypt`
+extension, deprecated in Python 3.11. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-23-40-22
+.. gh-issue: 104773
+.. nonce: FHA99J
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!nis` module, deprecated in Python 3.11. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-22-50-21
+.. gh-issue: 104898
+.. nonce: UbT2S4
+.. section: Library
+
+Add missing :attr:`~object.__slots__` to :class:`os.PathLike`.
+
+..
+
+.. date: 2023-05-24-22-47-13
+.. gh-issue: 104773
+.. nonce: itOIf3
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!xdrlib` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-22-22-03
+.. gh-issue: 104773
+.. nonce: NwpjhZ
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!nntplib` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-21-30-40
+.. gh-issue: 104886
+.. nonce: 8TuV-_
+.. section: Library
+
+Remove the undocumented :class:`!configparser.LegacyInterpolation` class,
+deprecated in the docstring since Python 3.2, and with a deprecation warning
+since Python 3.11. Patch by Hugo van Kemenade.
+
+..
+
+.. date: 2023-05-24-20-21-27
+.. gh-issue: 104786
+.. nonce: SmgT5_
+.. section: Library
+
+Remove kwargs-based :class:`typing.TypedDict` creation
+
+..
+
+.. date: 2023-05-24-19-48-16
+.. gh-issue: 104876
+.. nonce: Z00Qnk
+.. section: Library
+
+Remove the :meth:`!turtle.RawTurtle.settiltangle` method, deprecated in docs
+since Python 3.1 and with a deprecation warning since Python 3.11. Patch by
+Hugo van Kemenade.
+
+..
+
+.. date: 2023-05-24-18-48-10
+.. gh-issue: 104773
+.. nonce: TrgUeO
+.. section: Library
+
+:pep:`594`: Removed the :mod:`!msilib` package, deprecated in Python 3.11.
+
+..
+
+.. date: 2023-05-24-17-47-25
+.. gh-issue: 104773
+.. nonce: TzUSY2
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!spwd` module, deprecated in Python 3.11: the
+`python-pam project <https://pypi.org/project/python-pam/>`_ can be used
+instead. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-17-22-56
+.. gh-issue: 75552
+.. nonce: _QlrpQ
+.. section: Library
+
+Removed the ``tkinter.tix`` module, deprecated since Python 3.6.
+
+..
+
+.. date: 2023-05-24-15-57-34
+.. gh-issue: 104773
+.. nonce: IHWRgg
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!chunk` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-15-17-05
+.. gh-issue: 104773
+.. nonce: EmFIQ5
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!mailcap` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-14-58-13
+.. gh-issue: 104773
+.. nonce: sQaXrY
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!sunau` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-14-30-14
+.. gh-issue: 104780
+.. nonce: nXGIJt
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!ossaudiodev` module, deprecated in Python
+3.11. Patch Victor Stinner.
+
+..
+
+.. date: 2023-05-24-11-45-22
+.. gh-issue: 104773
+.. nonce: R0Br4-
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!pipes` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-24-09-55-33
+.. gh-issue: 104873
+.. nonce: BKQ54y
+.. section: Library
+
+Add :func:`typing.get_protocol_members` to return the set of members
+defining a :class:`typing.Protocol`.  Add :func:`typing.is_protocol` to
+check whether a class is a :class:`typing.Protocol`. Patch by Jelle
+Zijlstra.
+
+..
+
+.. date: 2023-05-24-09-34-23
+.. gh-issue: 104874
+.. nonce: oqyJSy
+.. section: Library
+
+Document the ``__name__`` and ``__supertype__`` attributes of
+:class:`typing.NewType`. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-24-08-45-04
+.. gh-issue: 104835
+.. nonce: bN_B-B
+.. section: Library
+
+Removed the following :mod:`unittest` functions, deprecated in Python 3.11:
+
+* :func:`!unittest.findTestCases`
+* :func:`!unittest.makeSuite`
+* :func:`!unittest.getTestCaseNames`
+
+Use :class:`~unittest.TestLoader` methods instead:
+
+* :meth:`unittest.TestLoader.loadTestsFromModule`
+* :meth:`unittest.TestLoader.loadTestsFromTestCase`
+* :meth:`unittest.TestLoader.getTestCaseNames`
+
+Patch by Hugo van Kemenade.
+
+..
+
+.. date: 2023-05-23-21-25-54
+.. gh-issue: 104804
+.. nonce: 78fiE6
+.. section: Library
+
+Remove the untested and undocumented :mod:`webbrowser` :class:`!MacOSX`
+class, deprecated in Python 3.11. Patch by Hugo van Kemenade.
+
+..
+
+.. date: 2023-05-23-19-53-18
+.. gh-issue: 83863
+.. nonce: eRI5JG
+.. section: Library
+
+Support for using :class:`pathlib.Path` objects as context managers has been
+removed. Before Python 3.9, exiting the context manager marked a path as
+"closed", which caused some (but not all!) methods to raise when called.
+Since Python 3.9, using a path as a context manager does nothing.
+
+..
+
+.. date: 2023-05-23-18-31-49
+.. gh-issue: 104799
+.. nonce: MJYOw6
+.. section: Library
+
+Adjust the location of the (see :pep:`695`) ``type_params`` field on
+:class:`ast.ClassDef`, :class:`ast.AsyncFunctionDef`, and
+:class:`ast.FunctionDef` to better preserve backward compatibility. Patch by
+Jelle Zijlstra
+
+..
+
+.. date: 2023-05-23-17-43-52
+.. gh-issue: 104797
+.. nonce: NR7KzF
+.. section: Library
+
+Allow :class:`typing.Protocol` classes to inherit from
+:class:`collections.abc.Buffer`. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-05-23-04-01-27
+.. gh-issue: 104783
+.. nonce: QyhIoq
+.. section: Library
+
+Remove ``locale.resetlocale()`` function deprecated in Python 3.11. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-05-23-03-36-47
+.. gh-issue: 104780
+.. nonce: P4e3Yf
+.. section: Library
+
+Remove the ``2to3`` program and the :mod:`!lib2to3` module, deprecated in
+Python 3.11. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-23-02-20-13
+.. gh-issue: 104773
+.. nonce: 7K59zr
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!telnetlib` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-23-02-13-11
+.. gh-issue: 104773
+.. nonce: JNiEjv
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!imghdr` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-23-01-47-57
+.. gh-issue: 104773
+.. nonce: I6MQhb
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!cgi`` and :mod:`!cgitb` modules, deprecated in
+Python 3.11. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-23-01-37-40
+.. gh-issue: 104773
+.. nonce: 8c-GsG
+.. section: Library
+
+:pep:`594`: Remove the :mod:`!sndhdr` module, deprecated in Python 3.11.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-22-18-39-53
+.. gh-issue: 104372
+.. nonce: 7tDRaK
+.. section: Library
+
+On Linux where :mod:`subprocess` can use the ``vfork()`` syscall for faster
+spawning, prevent the parent process from blocking other threads by dropping
+the GIL while it waits for the vfork'ed child process ``exec()`` outcome.
+This prevents spawning a binary from a slow filesystem from blocking the
+rest of the application.
+
+..
+
+.. date: 2023-05-19-19-46-22
+.. gh-issue: 99108
+.. nonce: wqCg0t
+.. section: Library
+
+We now release the GIL around built-in :mod:`hashlib` computations of
+reasonable size for the SHA families and MD5 hash functions, matching what
+our OpenSSL backed hash computations already does.
+
+..
+
+.. date: 2023-05-15-18-57-42
+.. gh-issue: 102613
+.. nonce: YD9yx-
+.. section: Library
+
+Improve performance of :meth:`pathlib.Path.glob` when expanding a pattern
+with a non-terminal "``**``" component by filtering walked paths through a
+regular expression, rather than calling :func:`os.scandir` more than once on
+each directory.
+
+..
+
+.. date: 2023-05-11-23-03-00
+.. gh-issue: 104399
+.. nonce: MMatTP
+.. section: Library
+
+Prepare the ``_tkinter`` module for building with Tcl 9.0 and future
+libtommath by replacing usage of deprecated functions
+:c:func:`mp_to_unsigned_bin_n` and :c:func:`mp_unsigned_bin_size` when
+necessary.
+
+..
+
+.. date: 2023-04-28-09-31-21
+.. gh-issue: 102676
+.. nonce: J8qDRa
+.. section: Library
+
+Add fields ``start_offset``, ``cache_offset``, ``end_offset``,
+``baseopname``, ``baseopcode``, ``jump_target`` and ``oparg`` to
+:class:`dis.Instruction`.
+
+..
+
+.. date: 2023-04-15-23-26-16
+.. gh-issue: 103558
+.. nonce: w9OzK4
+.. section: Library
+
+Fixed ``parent`` argument validation mechanism of :mod:`argparse`. Improved
+test coverage.
+
+..
+
+.. date: 2023-04-12-03-03-27
+.. gh-issue: 103464
+.. nonce: Oa_8IW
+.. section: Library
+
+Provide helpful usage messages when parsing incorrect :mod:`pdb` commands.
+
+..
+
+.. date: 2023-04-09-05-30-41
+.. gh-issue: 103384
+.. nonce: zAV7iB
+.. section: Library
+
+Generalize the regex pattern ``BaseConfigurator.INDEX_PATTERN`` to allow
+spaces and non-alphanumeric characters in keys.
+
+..
+
+.. date: 2023-04-09-03-53-02
+.. gh-issue: 103124
+.. nonce: JspiNN
+.. section: Library
+
+Added multiline statement support for :mod:`pdb`
+
+..
+
+.. date: 2023-04-08-12-43-52
+.. gh-issue: 101162
+.. nonce: yOCd_J
+.. section: Library
+
+Forbid using :func:`builtins.issubclass` with :class:`types.GenericAlias` as
+the first argument.
+
+..
+
+.. date: 2023-04-03-08-09-40
+.. gh-issue: 103200
+.. nonce: lq1Etz
+.. section: Library
+
+Fix cache repopulation semantics of zipimport.invalidate_caches(). The cache
+is now repopulated upon retrieving files with an invalid cache, not when the
+cache is invalidated.
+
+..
+
+.. date: 2023-03-14-01-19-57
+.. gh-issue: 100061
+.. nonce: CiXJYn
+.. section: Library
+
+Fix a bug that causes wrong matches for regular expressions with possessive
+qualifier.
+
+..
+
+.. date: 2023-03-12-03-37-03
+.. gh-issue: 77609
+.. nonce: aOQttm
+.. section: Library
+
+Add *follow_symlinks* argument to :meth:`pathlib.Path.glob` and
+:meth:`~pathlib.Path.rglob`, defaulting to false.
+
+..
+
+.. date: 2023-03-12-01-17-15
+.. gh-issue: 102541
+.. nonce: LK1adc
+.. section: Library
+
+Hide traceback in :func:`help` prompt, when import failed.
+
+..
+
+.. date: 2023-03-08-19-30-53
+.. gh-issue: 102120
+.. nonce: xkQ5Wr
+.. section: Library
+
+Added a stream mode to ``tarfile`` that allows for reading archives without
+caching info about the inner files.
+
+..
+
+.. date: 2023-02-20-15-41-59
+.. gh-issue: 102029
+.. nonce: 9ZPG99
+.. section: Library
+
+Deprecate passing any arguments to :func:`threading.RLock`.
+
+..
+
+.. date: 2023-02-20-12-00-11
+.. gh-issue: 88233
+.. nonce: o5Zb0t
+.. section: Library
+
+Refactored ``zipfile._strip_extra`` to use higher level abstactions for
+extras instead of a heavy-state loop.
+
+..
+
+.. date: 2023-02-18-22-55-48
+.. gh-issue: 102024
+.. nonce: RUmg_D
+.. section: Library
+
+Reduce calls of ``_idle_semaphore.release()`` in
+:func:`concurrent.futures.thread._worker`.
+
+..
+
+.. date: 2023-02-17-18-56-46
+.. gh-issue: 73435
+.. nonce: 7sTJHk
+.. section: Library
+
+Add support for recursive wildcards in :meth:`pathlib.PurePath.match`.
+
+..
+
+.. date: 2022-12-24-12-50-54
+.. gh-issue: 84867
+.. nonce: OhaLbU
+.. section: Library
+
+:class:`unittest.TestLoader` no longer loads test cases from exact
+:class:`unittest.TestCase` and :class:`unittest.FunctionTestCase` classes.
+
+..
+
+.. date: 2022-11-26-22-05-22
+.. gh-issue: 99203
+.. nonce: j0DUae
+.. section: Library
+
+Restore following CPython <= 3.10.5 behavior of :func:`shutil.make_archive`:
+do not create an empty archive if ``root_dir`` is not a directory, and, in
+that case, raise :class:`FileNotFoundError` or :class:`NotADirectoryError`
+regardless of ``format`` choice. Beyond the brought-back behavior, the
+function may now also raise these exceptions in ``dry_run`` mode.
+
+..
+
+.. date: 2022-08-07-11-10-26
+.. gh-issue: 80480
+.. nonce: IFccj3
+.. section: Library
+
+Emit :exc:`DeprecationWarning` for :mod:`array`'s ``'u'`` type code,
+deprecated in docs since Python 3.3.
+
+..
+
+.. date: 2022-07-18-14-20-56
+.. gh-issue: 94924
+.. nonce: X0buz2
+.. section: Library
+
+:func:`unittest.mock.create_autospec` now properly returns coroutine
+functions compatible with :func:`inspect.iscoroutinefunction`
+
+..
+
+.. date: 2022-07-12-18-45-13
+.. gh-issue: 94777
+.. nonce: mOybx7
+.. section: Library
+
+Fix hanging :mod:`multiprocessing` ``ProcessPoolExecutor`` when a child
+process crashes while data is being written in the call queue.
+
+..
+
+.. date: 2022-05-17-10-46-44
+.. gh-issue: 92871
+.. nonce: GVogrT
+.. section: Library
+
+Remove the ``typing.io`` and ``typing.re`` namespaces, deprecated since
+Python 3.8. All items are still available from the main :mod:`typing`
+module.
+
+..
+
+.. bpo: 43633
+.. date: 2021-10-31-16-06-28
+.. nonce: vflwXv
+.. section: Library
+
+Improve the textual representation of IPv4-mapped IPv6 addresses
+(:rfc:`4291` Sections 2.2, 2.5.5.2) in :mod:`ipaddress`. Patch by Oleksandr
+Pavliuk.
+
+..
+
+.. bpo: 44850
+.. date: 2021-08-16-17-52-26
+.. nonce: r8jx5u
+.. section: Library
+
+Improve performance of :func:`operator.methodcaller` using the :pep:`590`
+``vectorcall`` convention. Patch by Anthony Lee and Pieter Eendebak.
+
+..
+
+.. bpo: 44185
+.. date: 2021-06-24-20-45-03
+.. nonce: ZHb8yJ
+.. section: Library
+
+:func:`unittest.mock.mock_open` will call the :func:`close` method of the
+file handle mock when it is exiting from the context manager. Patch by Samet
+Yaslan.
+
+..
+
+.. bpo: 40988
+.. date: 2020-11-10-07-04-15
+.. nonce: 5kBC-O
+.. section: Library
+
+Improve performance of :class:`functools.singledispatchmethod` by caching
+the generated dispatch wrapper. Optimization suggested by frederico. Patch
+by @mental32, Alex Waygood and Pieter Eendebak.
+
+..
+
+.. bpo: 41768
+.. date: 2020-09-16-16-53-06
+.. nonce: 8_fWkC
+.. section: Library
+
+:mod:`unittest.mock` speccing no longer calls class properties. Patch by
+Melanie Witt.
+
+..
+
+.. bpo: 18319
+.. date: 2020-05-03-00-33-15
+.. nonce: faPTlx
+.. section: Library
+
+Ensure ``gettext(msg)`` retrieve translations even if a plural form exists.
+In other words: ``gettext(msg) == ngettext(msg, '', 1)``.
+
+..
+
+.. bpo: 17013
+.. date: 2019-09-13-13-28-10
+.. nonce: NWcgE3
+.. section: Library
+
+Add ``ThreadingMock`` to :mod:`unittest.mock` that can be used to create
+Mock objects that can wait until they are called. Patch by Karthikeyan
+Singaravelan and Mario Corchero.
+
+..
+
+.. date: 2023-09-10-02-39-06
+.. gh-issue: 109209
+.. nonce: 0LBewo
+.. section: Documentation
+
+The minimum Sphinx version required for the documentation is now 4.2.
+
+..
+
+.. date: 2023-09-03-13-43-49
+.. gh-issue: 108826
+.. nonce: KG7abS
+.. section: Documentation
+
+:mod:`dis` module command-line interface is now mentioned in documentation.
+
+..
+
+.. date: 2023-07-26-16-33-04
+.. gh-issue: 107305
+.. nonce: qB2LS4
+.. section: Documentation
+
+Add documentation for :c:type:`PyInterpreterConfig` and
+:c:func:`Py_NewInterpreterFromConfig`.  Also clarify some of the nearby docs
+relative to per-interpreter GIL.
+
+..
+
+.. date: 2023-07-22-15-14-13
+.. gh-issue: 107008
+.. nonce: 3JQ1Vt
+.. section: Documentation
+
+Document the :mod:`curses` module variables :const:`~curses.LINES` and
+:const:`~curses.COLS`.
+
+..
+
+.. date: 2023-07-21-11-51-57
+.. gh-issue: 106948
+.. nonce: K_JQ7j
+.. section: Documentation
+
+Add a number of standard external names to ``nitpick_ignore``.
+
+..
+
+.. date: 2023-06-30-19-28-59
+.. gh-issue: 106232
+.. nonce: hQ4-tz
+.. section: Documentation
+
+Make timeit doc command lines compatible with Windows by using double quotes
+for arguments.  This works on linux and macOS also.
+
+..
+
+.. date: 2023-05-31-23-05-51
+.. gh-issue: 105172
+.. nonce: SVfvkD
+.. section: Documentation
+
+Fixed :func:`functools.lru_cache` docstring accounting for ``typed``
+argument's different handling of str and int. Patch by Bar Harel.
+
+..
+
+.. date: 2023-05-29-14-10-24
+.. gh-issue: 105052
+.. nonce: MGFwbm
+.. section: Documentation
+
+Update ``timeit`` doc to specify that time in seconds is just the default.
+
+..
+
+.. date: 2023-05-28-21-01-00
+.. gh-issue: 89455
+.. nonce: qAKRrA
+.. section: Documentation
+
+Add missing documentation for the ``max_group_depth`` and
+``max_group_width`` parameters and the ``exceptions`` attribute of the
+:class:`traceback.TracebackException` class.
+
+..
+
+.. date: 2023-05-28-19-08-42
+.. gh-issue: 89412
+.. nonce: j4cg7K
+.. section: Documentation
+
+Add missing documentation for the ``end_lineno`` and ``end_offset``
+attributes of the :class:`traceback.TracebackException` class.
+
+..
+
+.. date: 2023-05-25-22-34-31
+.. gh-issue: 104943
+.. nonce: J2v1Pc
+.. section: Documentation
+
+Remove mentions of old Python versions in :class:`typing.NamedTuple`.
+
+..
+
+.. date: 2023-05-16-22-08-24
+.. gh-issue: 54738
+.. nonce: mJvCnj
+.. section: Documentation
+
+Add documentation on how to localize the :mod:`argparse` module.
+
+..
+
+.. date: 2023-03-19-09-39-31
+.. gh-issue: 102823
+.. nonce: OzsOz0
+.. section: Documentation
+
+Document the return type of ``x // y`` when ``x`` and ``y`` have type
+:class:`float`.
+
+..
+
+.. date: 2023-03-16-15-39-26
+.. gh-issue: 102759
+.. nonce: ehpHw6
+.. section: Documentation
+
+Align function signature for ``functools.reduce`` in documentation and
+docstring with the C implementation.
+
+..
+
+.. date: 2023-10-10-23-20-13
+.. gh-issue: 110647
+.. nonce: jKG3sY
+.. section: Tests
+
+Fix test_stress_modifying_handlers() of test_signal. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-10-06-02-32-18
+.. gh-issue: 103053
+.. nonce: VfxBLI
+.. section: Tests
+
+Fix test_tools.test_freeze on FreeBSD: run "make distclean" instead of "make
+clean" in the copied source directory to remove also the "python" program.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-05-19-33-49
+.. gh-issue: 110167
+.. nonce: mIdj3v
+.. section: Tests
+
+Fix a deadlock in test_socket when server fails with a timeout but the
+client is still running in its thread. Don't hold a lock to call cleanup
+functions in doCleanups(). One of the cleanup function waits until the
+client completes, whereas the client could deadlock if it called
+addCleanup() in such situation. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-05-14-22-48
+.. gh-issue: 110388
+.. nonce: 1-HQJO
+.. section: Tests
+
+Add tests for :mod:`tty`.
+
+..
+
+.. date: 2023-10-05-13-46-50
+.. gh-issue: 81002
+.. nonce: bOcuV6
+.. section: Tests
+
+Add tests for :mod:`termios`.
+
+..
+
+.. date: 2023-10-04-18-27-47
+.. gh-issue: 110367
+.. nonce: Nnq1I7
+.. section: Tests
+
+regrtest: When using worker processes (-jN) with --verbose3 option, regrtest
+can now display the worker output even if a worker process does crash.
+Previously, sys.stdout and sys.stderr were replaced and so the worker output
+was lost on a crash. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-03-10-54-09
+.. gh-issue: 110267
+.. nonce: O-c47G
+.. section: Tests
+
+Add tests for pickling and copying PyStructSequence objects. Patched by
+Xuehai Pan.
+
+..
+
+.. date: 2023-10-01-10-27-02
+.. gh-issue: 110171
+.. nonce: ZPlo0h
+.. section: Tests
+
+``libregrtest`` now always sets and shows ``random.seed``, so tests are more
+reproducible. Use ``--randseed`` flag to pass the explicit random seed for
+tests.
+
+..
+
+.. date: 2023-09-30-20-18-38
+.. gh-issue: 110152
+.. nonce: 4Kxve1
+.. section: Tests
+
+Remove ``Tools/scripts/run_tests.py`` and ``make hostrunnertest``. Just run
+``./python -m test --slow-ci``, ``make buildbottest`` or ``make test``
+instead. Python test runner (regrtest) now handles cross-compilation and
+HOSTRUNNER. It also adds options to Python such fast ``-u -E -W default
+-bb`` when ``--fast-ci`` or ``--slow-ci`` option is used. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-29-14-11-30
+.. gh-issue: 110031
+.. nonce: fQnFnc
+.. section: Tests
+
+Skip test_threading tests using thread+fork if Python is built with Address
+Sanitizer (ASAN). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-29-12-48-42
+.. gh-issue: 110088
+.. nonce: qUhRga
+.. section: Tests
+
+Fix test_asyncio timeouts: don't measure the maximum duration, a test should
+not measure a CI performance. Only measure the minimum duration when a task
+has a timeout or delay. Add ``CLOCK_RES`` to ``test_asyncio.utils``. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2023-09-29-00-19-21
+.. gh-issue: 109974
+.. nonce: Sh_g-r
+.. section: Tests
+
+Fix race conditions in test_threading lock tests. Wait until a condition is
+met rather than using :func:`time.sleep` with a hardcoded number of seconds.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-28-18-14-52
+.. gh-issue: 110033
+.. nonce: 2yHMx0
+.. section: Tests
+
+Fix ``test_interprocess_signal()`` of ``test_signal``. Make sure that the
+``subprocess.Popen`` object is deleted before the test raising an exception
+in a signal handler. Otherwise, ``Popen.__del__()`` can get the exception
+which is logged as ``Exception ignored in: ...`` and the test fails. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2023-09-28-14-47-14
+.. gh-issue: 109594
+.. nonce: DB5KPP
+.. section: Tests
+
+Fix test_timeout() of test_concurrent_futures.test_wait. Remove the future
+which may or may not complete depending if it takes longer than the timeout
+ot not. Keep the second future which does not complete before wait()
+timeout. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-28-12-25-19
+.. gh-issue: 109972
+.. nonce: GYnwIP
+.. section: Tests
+
+Split test_gdb.py file into a test_gdb package made of multiple tests, so
+tests can now be run in parallel. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-26-18-12-01
+.. gh-issue: 109566
+.. nonce: CP0Vhf
+.. section: Tests
+
+regrtest: When ``--fast-ci`` or ``--slow-ci`` option is used, regrtest now
+replaces the current process with a new process to add ``-u -W default -bb
+-E`` options to Python. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-26-00-49-18
+.. gh-issue: 109748
+.. nonce: nxlT1i
+.. section: Tests
+
+Fix ``test_zippath_from_non_installed_posix()`` of test_venv: don't copy
+``__pycache__/`` sub-directories, because they can be modified by other
+Python tests running in parallel. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-25-23-59-37
+.. gh-issue: 109739
+.. nonce: MUn7K5
+.. section: Tests
+
+regrtest: Fix reference leak check on Windows. Disable the load tracker on
+Windows in the reference leak check mode (-R option). Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-25-14-41-18
+.. gh-issue: 109276
+.. nonce: uC_cWo
+.. section: Tests
+
+regrtest: When a test fails with "env changed" and the --rerun option is
+used, the test is now re-run in verbose mode in a fresh process. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-09-20-02-32-17
+.. gh-issue: 103053
+.. nonce: AoUJuK
+.. section: Tests
+
+Skip test_freeze_simple_script() of test_tools.test_freeze if Python is
+built with ``./configure --enable-optimizations``, which means with Profile
+Guided Optimization (PGO): it just makes the test too slow. The freeze tool
+is tested by many other CIs with other (faster) compiler flags. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-09-19-19-08-22
+.. gh-issue: 109580
+.. nonce: G02Zam
+.. section: Tests
+
+Skip ``test_perf_profiler`` if Python is built with ASAN, MSAN or UBSAN
+sanitizer. Python does crash randomly in this test on such build. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-09-19-13-33-20
+.. gh-issue: 109566
+.. nonce: aX0g9o
+.. section: Tests
+
+regrtest: Add ``--fast-ci`` and ``--slow-ci`` options. ``--fast-ci`` uses a
+default timeout of 10 minutes and ``-u all,-cpu`` (skip slowest tests).
+``--slow-ci`` uses a default timeout of 20 minues and ``-u all`` (run all
+tests). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-14-23-27-40
+.. gh-issue: 109425
+.. nonce: j-uFep
+.. section: Tests
+
+libregrtest now decodes stdout of test worker processes with the
+"backslashreplace" error handler to log corrupted stdout, instead of failing
+with an error and not logging the stdout. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-14-22-58-47
+.. gh-issue: 109396
+.. nonce: J1a4jR
+.. section: Tests
+
+Fix ``test_socket.test_hmac_sha1()`` in FIPS mode. Use a longer key: FIPS
+mode requires at least of at least 112 bits. The previous key was only 32
+bits. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-13-05-58-09
+.. gh-issue: 104736
+.. nonce: lA25Fu
+.. section: Tests
+
+Fix test_gdb on Python built with LLVM clang 16 on Linux ppc64le (ex: Fedora
+38). Search patterns in gdb "bt" command output to detect when gdb fails to
+retrieve the traceback. For example, skip a test if ``Backtrace stopped:
+frame did not save the PC`` is found. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-11-19-11-57
+.. gh-issue: 109276
+.. nonce: qxI4OG
+.. section: Tests
+
+libregrtest now calls :func:`random.seed()` before running each test file
+when ``-r/--randomize`` command line option is used. Moreover, it's also
+called in worker processes.  It should help to make tests more
+deterministic. Previously, it was only called once in the main process
+before running all test files and it was not called in worker processes.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-11-18-19-52
+.. gh-issue: 109276
+.. nonce: btfFtT
+.. section: Tests
+
+libregrtest now uses a separated file descriptor to write test result as
+JSON. Previously, if a test wrote debug messages late around the JSON, the
+main test process failed to parse JSON. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-10-23-05-50
+.. gh-issue: 108996
+.. nonce: tJBru6
+.. section: Tests
+
+Fix and enable ``test_msvcrt``.
+
+..
+
+.. date: 2023-09-10-22-32-20
+.. gh-issue: 109237
+.. nonce: SvgKwD
+.. section: Tests
+
+Fix ``test_site.test_underpth_basic()`` when the working directory contains
+at least one non-ASCII character: encode the ``._pth`` file to UTF-8 and
+enable the UTF-8 Mode to use UTF-8 for the child process stdout. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-09-10-19-59-57
+.. gh-issue: 109230
+.. nonce: SRNLFQ
+.. section: Tests
+
+Fix ``test_pyexpat.test_exception()``: it can now be run from a directory
+different than Python source code directory. Before, the test failed in this
+case.  Skip the test if Modules/pyexpat.c source is not available. Skip also
+the test on Python implementations other than CPython. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-06-22-06-22
+.. gh-issue: 108996
+.. nonce: IBhR3U
+.. section: Tests
+
+Add tests for ``msvcrt``.
+
+..
+
+.. date: 2023-09-06-18-27-53
+.. gh-issue: 109015
+.. nonce: 1dS1AQ
+.. section: Tests
+
+Fix test_asyncio, test_imaplib and test_socket tests on FreeBSD if the TCP
+blackhole is enabled (``sysctl net.inet.tcp.blackhole``). Skip the few tests
+which failed with ``ETIMEDOUT`` which such non standard configuration.
+Currently, the `FreeBSD GCP image enables TCP and UDP blackhole
+<https://reviews.freebsd.org/D41751>`_ (``sysctl net.inet.tcp.blackhole=2``
+and ``sysctl net.inet.udp.blackhole=1``).  Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-06-15-36-51
+.. gh-issue: 91960
+.. nonce: P3nD5v
+.. section: Tests
+
+Skip ``test_gdb`` if gdb is unable to retrieve Python frame objects: if a
+frame is ``<optimized out>``. When Python is built with "clang -Og", gdb can
+fail to retrive the *frame* parameter of ``_PyEval_EvalFrameDefault()``. In
+this case, tests like ``py_bt()`` are likely to fail. Without getting access
+to Python frames, ``python-gdb.py`` is mostly clueless on retrieving the
+Python traceback. Moreover, ``test_gdb`` is no longer skipped on macOS if
+Python is built with Clang. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-05-23-00-09
+.. gh-issue: 108962
+.. nonce: R4NwuU
+.. section: Tests
+
+Skip ``test_tempfile.test_flags()`` if ``chflags()`` fails with "OSError:
+[Errno 45] Operation not supported" (ex: on FreeBSD 13). Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-05-21-42-54
+.. gh-issue: 91960
+.. nonce: abClTs
+.. section: Tests
+
+FreeBSD 13.2 CI coverage for pull requests is now provided by Cirrus-CI (a
+hosted CI service that supports Linux, macOS, Windows, and FreeBSD).
+
+..
+
+.. date: 2023-09-04-15-18-14
+.. gh-issue: 89392
+.. nonce: 8A4T5p
+.. section: Tests
+
+Removed support of ``test_main()`` function in tests. They now always use
+normal unittest test runner.
+
+..
+
+.. date: 2023-09-03-21-41-10
+.. gh-issue: 108851
+.. nonce: xFTYOE
+.. section: Tests
+
+Fix ``test_tomllib`` recursion tests for WASI buildbots: reduce the
+recursion limit and compute the maximum nested array/dict depending on the
+current available recursion limit. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-03-21-18-35
+.. gh-issue: 108851
+.. nonce: CCuHyI
+.. section: Tests
+
+Add ``get_recursion_available()`` and ``get_recursion_depth()`` functions to
+the :mod:`test.support` module. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-03-20-15-49
+.. gh-issue: 108834
+.. nonce: Osvmhf
+.. section: Tests
+
+Add ``--fail-rerun option`` option to regrtest: if a test failed when then
+passed when rerun in verbose mode, exit the process with exit code 2
+(error), instead of exit code 0 (success). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-03-06-17-12
+.. gh-issue: 108834
+.. nonce: fjV-CJ
+.. section: Tests
+
+Rename regrtest ``--verbose2`` option (``-w``) to ``--rerun``. Keep
+``--verbose2`` as a deprecated alias. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-03-02-01-55
+.. gh-issue: 108834
+.. nonce: iAwXzj
+.. section: Tests
+
+When regrtest reruns failed tests in verbose mode (``./python -m test
+--rerun``), tests are now rerun in fresh worker processes rather than being
+executed in the main process. If a test does crash or is killed by a
+timeout, the main process can detect and handle the killed worker process.
+Tests are rerun in parallel if the ``-jN`` option is used to run tests in
+parallel. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-02-19-06-52
+.. gh-issue: 108822
+.. nonce: arTbBI
+.. section: Tests
+
+``regrtest`` now computes statistics on all tests: successes, failures and
+skipped. ``test_netrc``, ``test_pep646_syntax`` and ``test_xml_etree`` now
+return results in their ``test_main()`` function. Patch by Victor Stinner
+and Alex Waygood.
+
+..
+
+.. date: 2023-09-02-05-13-38
+.. gh-issue: 108794
+.. nonce: tGHXBt
+.. section: Tests
+
+The :meth:`doctest.DocTestRunner.run` method now counts the number of
+skipped tests. Add :attr:`doctest.DocTestRunner.skips` and
+:attr:`doctest.TestResults.skipped` attributes. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-24-06-10-36
+.. gh-issue: 108388
+.. nonce: YCVB0D
+.. section: Tests
+
+Convert test_concurrent_futures to a package of 7 sub-tests. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-08-24-04-23-35
+.. gh-issue: 108388
+.. nonce: mr0MeE
+.. section: Tests
+
+Split test_multiprocessing_fork, test_multiprocessing_forkserver and
+test_multiprocessing_spawn into test packages. Each package is made of 4
+sub-tests: processes, threads, manager and misc. It allows running more
+tests in parallel and so reduce the total test duration. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-08-23-04-08-18
+.. gh-issue: 105776
+.. nonce: oE6wp_
+.. section: Tests
+
+Fix test_cppext when the C compiler command ``-std=c11`` option: remove
+``-std=`` options from the compiler command. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-05-14-01-07
+.. gh-issue: 107652
+.. nonce: 5OxOlT
+.. section: Tests
+
+Set up CIFuzz to run fuzz targets in GitHub Actions. Patch by Illia
+Volochii.
+
+..
+
+.. date: 2023-07-25-14-36-33
+.. gh-issue: 107237
+.. nonce: y1pY79
+.. section: Tests
+
+``test_logging``: Fix ``test_udp_reconnection()`` by increasing the timeout
+from 100 ms to 5 minutes (LONG_TIMEOUT). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-07-24-16-56-59
+.. gh-issue: 107178
+.. nonce: Gq1usE
+.. section: Tests
+
+Add the C API test for functions in the Mapping Protocol, the Sequence
+Protocol and some functions in the Object Protocol.
+
+..
+
+.. date: 2023-07-22-13-49-40
+.. gh-issue: 106714
+.. nonce: btYI5S
+.. section: Tests
+
+test_capi: Fix test_no_FatalError_infinite_loop() to no longer write a
+coredump, by using test.support.SuppressCrashReport. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-07-16-02-57-08
+.. gh-issue: 104090
+.. nonce: cKtK7g
+.. section: Tests
+
+Avoid creating a reference to the test object in
+:meth:`~unittest.TestResult.collectedDurations`.
+
+..
+
+.. date: 2023-07-14-16-20-06
+.. gh-issue: 106752
+.. nonce: gd1i6D
+.. section: Tests
+
+Moved tests for ``zipfile.Path`` into ``Lib/test/test_zipfile/_path``. Made
+``zipfile._path`` a package.
+
+..
+
+.. date: 2023-07-12-14-07-07
+.. gh-issue: 106690
+.. nonce: NDz-oG
+.. section: Tests
+
+Add .coveragerc to cpython repository for use with coverage package.
+
+..
+
+.. date: 2023-06-28-02-51-08
+.. gh-issue: 101634
+.. nonce: Rayczr
+.. section: Tests
+
+When running the Python test suite with ``-jN`` option, if a worker stdout
+cannot be decoded from the locale encoding report a failed testn so the
+exitcode is non-zero. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-29-14-49-46
+.. gh-issue: 105084
+.. nonce: lvVvoj
+.. section: Tests
+
+When the Python build is configured ``--with-wheel-pkg-dir``, tests
+requiring the ``setuptools`` and ``wheel`` wheels will search for the wheels
+in ``WHEEL_PKG_DIR``.
+
+..
+
+.. date: 2023-05-19-08-06-06
+.. gh-issue: 81005
+.. nonce: -q7m9W
+.. section: Tests
+
+String tests are modified to reflect that ``str`` and ``unicode`` are merged
+in Python 3. Patch by Daniel Fortunov.
+
+..
+
+.. date: 2023-04-05-06-45-20
+.. gh-issue: 103186
+.. nonce: 640Eg-
+.. section: Tests
+
+Suppress and assert expected RuntimeWarnings in test_sys_settrace.py
+
+..
+
+.. date: 2022-06-09-21-27-38
+.. gh-issue: 69714
+.. nonce: 49tyHW
+.. section: Tests
+
+Add additional tests to :mod:`calendar` to achieve full test coverage.
+
+..
+
+.. date: 2023-10-06-02-15-23
+.. gh-issue: 103053
+.. nonce: --7JUF
+.. section: Build
+
+"make check-clean-src" now also checks if the "python" program is found in
+the source directory: fail with an error if it does exist. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-10-05-11-46-20
+.. gh-issue: 109191
+.. nonce: imUkVN
+.. section: Build
+
+Fix compile error when building with recent versions of libedit.
+
+..
+
+.. date: 2023-10-03-17-55-09
+.. gh-issue: 110276
+.. nonce: luaKRg
+.. section: Build
+
+No longer ignore :envvar:`PROFILE_TASK` failure silently: command used by
+Profile Guided Optimization (PGO). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-29-21-01-48
+.. gh-issue: 109566
+.. nonce: _enldb
+.. section: Build
+
+Remove ``make testall`` target: use ``make buildbottest`` instead. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-09-26-16-00-50
+.. gh-issue: 109740
+.. nonce: wboWdQ
+.. section: Build
+
+The experimental ``--disable-gil`` configure flag now includes "t" (for
+"threaded") in extension ABI tags.
+
+..
+
+.. date: 2023-09-07-19-58-05
+.. gh-issue: 109054
+.. nonce: 5r3S3l
+.. section: Build
+
+Fix building the ``_testcapi`` extension on Linux AArch64 which requires
+linking to libatomic when ``<cpython/pyatomic.h>`` is used: the
+``_Py_atomic_or_uint64()`` function requires libatomic
+``__atomic_fetch_or_8()`` on this platform. The configure script now checks
+if linking to libatomic is needed and generates a new LIBATOMIC variable
+used to build the _testcapi extension. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-02-18-04-15
+.. gh-issue: 63760
+.. nonce: r8hJ6q
+.. section: Build
+
+Fix Solaris build: no longer redefine the ``gethostname()`` function.
+Solaris defines the function since 2005. Patch by Victor Stinner, original
+patch by Jakub Kulík.
+
+..
+
+.. date: 2023-09-01-01-39-26
+.. gh-issue: 108740
+.. nonce: JHExAQ
+.. section: Build
+
+Fix a race condition in ``make regen-all``. The ``deepfreeze.c`` source and
+files generated by Argument Clinic are now generated or updated before
+generating "global objects". Previously, some identifiers may miss depending
+on the order in which these files were generated. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-30-02-52-52
+.. gh-issue: 108634
+.. nonce: 3dpBvf
+.. section: Build
+
+Python built with :file:`configure` :option:`--with-trace-refs` (tracing
+references) is now ABI compatible with Python release build and :ref:`debug
+build <debug-build>`. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-29-15-05-09
+.. gh-issue: 85283
+.. nonce: tlK7G7
+.. section: Build
+
+The ``_stat`` C extension is now built with the :ref:`limited C API
+<limited-c-api>`. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-24-18-36-31
+.. gh-issue: 108447
+.. nonce: Ofsygr
+.. section: Build
+
+Fix x86_64 GNU/Hurd build
+
+..
+
+.. date: 2023-08-09-17-05-33
+.. gh-issue: 107814
+.. nonce: c0Oapq
+.. section: Build
+
+When calling ``find_python.bat`` with ``-q`` it did not properly silence the
+output of nuget. That is now fixed.
+
+..
+
+.. date: 2023-08-01-17-12-53
+.. gh-issue: 105481
+.. nonce: 42nsDE
+.. section: Build
+
+Remove the make target ``regen-opcode-targets``, merge its work into
+``regen-opcode`` which repeats most of the calculation. This simplifies the
+code for the build and reduces code duplication.
+
+..
+
+.. date: 2023-07-28-18-17-33
+.. gh-issue: 106881
+.. nonce: U3Ezdq
+.. section: Build
+
+Check for ``linux/limits.h`` before including it in
+``Modules/posixmodule.c``.
+
+..
+
+.. date: 2023-07-25-02-30-00
+.. gh-issue: 95855
+.. nonce: wA7rAf
+.. section: Build
+
+Refactor platform triplet detection code and add detection for MIPS soft
+float and musl libc.
+
+..
+
+.. date: 2023-07-23-00-38-51
+.. gh-issue: 106962
+.. nonce: VVYrWB
+.. section: Build
+
+Detect MPI compilers in :file:`configure`.
+
+..
+
+.. date: 2023-06-26-21-56-29
+.. gh-issue: 106118
+.. nonce: 0cCfhl
+.. section: Build
+
+Fix compilation for platforms without :data:`!O_CLOEXEC`. The issue was
+introduced with Python 3.12b1 in :gh:`103295`. Patch by Erlend Aasland.
+
+..
+
+.. date: 2023-06-16-23-40-49
+.. gh-issue: 105875
+.. nonce: naj8v5
+.. section: Build
+
+SQLite 3.15.2 or newer is required to build the :mod:`sqlite3` extension
+module. Patch by Erlend Aasland.
+
+..
+
+.. date: 2023-06-06-09-08-10
+.. gh-issue: 90005
+.. nonce: 8mmeJQ
+.. section: Build
+
+Fix a regression in :file:`configure` where we could end up unintentionally
+linking with ``libbsd``.
+
+..
+
+.. date: 2023-06-02-19-12-45
+.. gh-issue: 102404
+.. nonce: Ry9piA
+.. section: Build
+
+Document how to perform a WASI build on Linux. Also add
+Tools/wasm/build_wasi.sh as a reference implementation of the docs.
+
+..
+
+.. date: 2023-05-26-15-44-20
+.. gh-issue: 89886
+.. nonce: _iSW-p
+.. section: Build
+
+Autoconf 2.71 and aclocal 1.16.4 is now required to regenerate
+:file:`!configure`.
+
+..
+
+.. date: 2023-05-20-23-49-30
+.. gh-issue: 104692
+.. nonce: s5UIu5
+.. section: Build
+
+Include ``commoninstall`` as a prerequisite for ``bininstall``
+
+This ensures that ``commoninstall`` is completed before ``bininstall`` is
+started when parallel builds are used (``make -j install``), and so the
+``python3`` symlink is only installed after all standard library modules are
+installed.
+
+..
+
+.. date: 2023-02-03-21-36-42
+.. gh-issue: 101538
+.. nonce: sF5F6S
+.. section: Build
+
+Add experimental wasi-threads support. Patch by Takashi Yamamoto.
+
+..
+
+.. date: 2023-10-06-14-20-14
+.. gh-issue: 110437
+.. nonce: xpYy9q
+.. section: Windows
+
+Allows overriding the source of VC redistributables so that releases can be
+guaranteed to never downgrade between updates.
+
+..
+
+.. date: 2023-10-05-15-23-23
+.. gh-issue: 109286
+.. nonce: N8OzMg
+.. section: Windows
+
+Update Windows installer to use SQLite 3.43.1.
+
+..
+
+.. date: 2023-10-03-12-30-59
+.. gh-issue: 82367
+.. nonce: nxwfMx
+.. section: Windows
+
+:func:`os.path.realpath` now resolves MS-DOS style file names even if the
+file is not accessible. Patch by Moonsik Park.
+
+..
+
+.. date: 2023-09-28-17-09-23
+.. gh-issue: 109991
+.. nonce: CIMftz
+.. section: Windows
+
+Update Windows build to use OpenSSL 3.0.11.
+
+..
+
+.. date: 2023-08-22-00-36-57
+.. gh-issue: 106242
+.. nonce: q24ITw
+.. section: Windows
+
+Fixes :func:`~os.path.realpath` to behave consistently when passed a path
+containing an embedded null character on Windows. In strict mode, it now
+raises :exc:`OSError` instead of the unexpected :exc:`ValueError`, and in
+non-strict mode will make the path absolute.
+
+..
+
+.. date: 2023-08-18-00-01-21
+.. gh-issue: 83180
+.. nonce: DdLffv
+.. section: Windows
+
+Changes the :ref:`launcher` to prefer an active virtual environment when the
+launched script has a shebang line using a Unix-like virtual command, even
+if the command requests a specific version of Python.
+
+..
+
+.. date: 2023-07-18-13-01-26
+.. gh-issue: 106844
+.. nonce: mci4xO
+.. section: Windows
+
+Fix integer overflow and truncating by the null character in
+:func:`!_winapi.LCMapStringEx` which affects :func:`ntpath.normcase`.
+
+..
+
+.. date: 2023-06-08-11-30-17
+.. gh-issue: 105436
+.. nonce: 1qlDxw
+.. section: Windows
+
+Ensure that an empty environment block is terminated by two null characters,
+as is required by Windows.
+
+..
+
+.. date: 2023-05-31-16-14-31
+.. gh-issue: 105146
+.. nonce: gNjqq8
+.. section: Windows
+
+Updated the links at the end of the installer to point to Discourse rather
+than the mailing lists.
+
+..
+
+.. date: 2023-05-29-17-09-31
+.. gh-issue: 103646
+.. nonce: U8oGQx
+.. section: Windows
+
+When installed from the Microsoft Store, ``pip`` no longer defaults to
+per-user installs. However, as the install directory is unwritable, it
+should automatically decide to do a per-user install anyway. This should
+resolve issues when ``pip`` is passed an option that conflicts with
+``--user``.
+
+..
+
+.. date: 2023-05-29-11-38-53
+.. gh-issue: 88745
+.. nonce: cldf9G
+.. section: Windows
+
+Improve performance of :func:`shutil.copy2` by using the operating system's
+``CopyFile2`` function. This may result in subtle changes to metadata copied
+along with some files, bringing them in line with normal OS behavior.
+
+..
+
+.. date: 2023-05-24-21-00-57
+.. gh-issue: 104820
+.. nonce: ibyrpp
+.. section: Windows
+
+Fixes :func:`~os.stat` and related functions on file systems that do not
+support file ID requests. This includes FAT32 and exFAT.
+
+..
+
+.. date: 2023-05-23-19-26-28
+.. gh-issue: 104803
+.. nonce: gqxYml
+.. section: Windows
+
+Add :func:`os.path.isdevdrive` to detect whether a path is on a Windows Dev
+Drive. Returns ``False`` on platforms that do not support Dev Drive, and is
+absent on non-Windows platforms.
+
+..
+
+.. date: 2023-10-04-23-38-24
+.. gh-issue: 109286
+.. nonce: 1ZLMaq
+.. section: macOS
+
+Update macOS installer to use SQLite 3.43.1.
+
+..
+
+.. date: 2023-09-27-22-35-22
+.. gh-issue: 109991
+.. nonce: -xJzaF
+.. section: macOS
+
+Update macOS installer to use OpenSSL 3.0.11.
+
+..
+
+.. date: 2023-07-30-23-42-20
+.. gh-issue: 99079
+.. nonce: JAtoh1
+.. section: macOS
+
+Update macOS installer to use OpenSSL 3.0.9.
+
+..
+
+.. date: 2023-05-23-17-19-49
+.. gh-issue: 104719
+.. nonce: rvYXH-
+.. section: IDLE
+
+Remove IDLE's modification of tokenize.tabsize and test other uses of
+tokenize data and methods.
+
+..
+
+.. date: 2023-09-27-23-31-54
+.. gh-issue: 109991
+.. nonce: sUUYY8
+.. section: Tools/Demos
+
+Update GitHub CI workflows to use OpenSSL 3.0.11 and multissltests to use
+1.1.1w, 3.0.11, and 3.1.3.
+
+..
+
+.. date: 2023-08-25-22-40-12
+.. gh-issue: 108494
+.. nonce: 4RbDdu
+.. section: Tools/Demos
+
+`Argument Clinic <https://devguide.python.org/development-tools/clinic/>`__
+now has a partial support of the :ref:`Limited API <limited-c-api>`: see
+`documentation in the Python Developer's Guide
+<https://devguide.python.org/development-tools/clinic/#clinic-howto-limited-capi>`__
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-15-19-50-49
+.. gh-issue: 107704
+.. nonce: Uu84vd
+.. section: Tools/Demos
+
+It is now possible to deprecate passing keyword arguments for
+keyword-or-positional parameters with Argument Clinic, using the new ``/
+[from X.Y]`` syntax. (To be read as *"positional-only from Python version
+X.Y"*.) See `documentation in the Python Developer's Guide
+<https://devguide.python.org/development-tools/clinic/#clinic-howto-deprecate-keyword>`__
+for more information.
+
+..
+
+.. date: 2023-08-13-11-18-06
+.. gh-issue: 107880
+.. nonce: gBVVQ7
+.. section: Tools/Demos
+
+Argument Clinic can now clone :meth:`!__init__` and :meth:`!__new__`
+methods.
+
+..
+
+.. date: 2023-08-08-12-21-41
+.. gh-issue: 104683
+.. nonce: DRsAQE
+.. section: Tools/Demos
+
+Add ``--exclude`` option to Argument Clinic CLI.
+
+..
+
+.. date: 2023-08-07-16-30-48
+.. gh-issue: 95065
+.. nonce: -im4R5
+.. section: Tools/Demos
+
+Argument Clinic now supports overriding automatically generated signature by
+using directive ``@text_signature``. See `documentation in the Python
+Developer's Guide
+<https://devguide.python.org/development-tools/clinic/#clinic-howto-override-signature>`__
+
+..
+
+.. date: 2023-08-04-00-04-40
+.. gh-issue: 107609
+.. nonce: 2DqgtL
+.. section: Tools/Demos
+
+Fix duplicate module check in Argument Clinic. Previously, a duplicate
+definition would incorrectly be silently accepted. Patch by Erlend E.
+Aasland.
+
+..
+
+.. date: 2023-07-30-23-32-16
+.. gh-issue: 107467
+.. nonce: 5O9p3G
+.. section: Tools/Demos
+
+The Argument Clinic command-line tool now prints to stderr instead of stdout
+on failure.
+
+..
+
+.. date: 2023-07-21-23-16-05
+.. gh-issue: 106970
+.. nonce: NLRnml
+.. section: Tools/Demos
+
+Fix bugs in the Argument Clinic ``destination <name> clear`` command; the
+destination buffers would never be cleared, and the ``destination``
+directive parser would simply continue to the fault handler after processing
+the command. Patch by Erlend E. Aasland.
+
+..
+
+.. date: 2023-07-13-12-08-35
+.. gh-issue: 106706
+.. nonce: 29zp8E
+.. section: Tools/Demos
+
+Change bytecode syntax for families to remove redundant name matching pseudo
+syntax.
+
+..
+
+.. date: 2023-07-03-14-06-19
+.. gh-issue: 106359
+.. nonce: RfJuR0
+.. section: Tools/Demos
+
+Argument Clinic now explicitly forbids "kwarg splats" in function calls used
+as annotations.
+
+..
+
+.. date: 2023-04-05-07-19-36
+.. gh-issue: 103186
+.. nonce: yEozgK
+.. section: Tools/Demos
+
+``freeze`` now fetches ``CONFIG_ARGS`` from the original CPython instance
+the Makefile uses to call utility scripts. Patch by Ijtaba Hussain.
+
+..
+
+.. date: 2022-07-23-00-33-28
+.. gh-issue: 95065
+.. nonce: NfCCpp
+.. section: Tools/Demos
+
+It is now possible to deprecate passing parameters positionally with
+Argument Clinic, using the new ``* [from X.Y]`` syntax. (To be read as
+*"keyword-only from Python version X.Y"*.) See `documentation in the Python
+Developer's Guide
+<https://devguide.python.org/development-tools/clinic/#clinic-howto-deprecate-positional>`__
+for more information. Patch by Erlend E. Aasland with help from Alex
+Waygood, Nikita Sobolev, and Serhiy Storchaka.
+
+..
+
+.. date: 2023-10-11-17-29-52
+.. gh-issue: 85283
+.. nonce: OsqIBF
+.. section: C API
+
+If the :c:macro:`Py_LIMITED_API` macro is defined,
+:c:macro:`!Py_BUILD_CORE`, :c:macro:`!Py_BUILD_CORE_BUILTIN` and
+:c:macro:`!Py_BUILD_CORE_MODULE` macros are now undefined by ``<Python.h>``.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-03-19-01-20
+.. gh-issue: 110289
+.. nonce: YBIHEz
+.. section: C API
+
+Add :c:func:`PyUnicode_EqualToUTF8AndSize` and
+:c:func:`PyUnicode_EqualToUTF8` functions.
+
+..
+
+.. date: 2023-10-03-06-19-10
+.. gh-issue: 110235
+.. nonce: uec5AG
+.. section: C API
+
+Raise :exc:`TypeError` for duplicate/unknown fields in ``PyStructSequence``
+constructor. Patched by Xuehai Pan.
+
+..
+
+.. date: 2023-10-02-13-39-57
+.. gh-issue: 110014
+.. nonce: gfQ4jU
+.. section: C API
+
+Remove undocumented ``PY_TIMEOUT_MAX`` constant from the limited C API.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-17-21-47-31
+.. gh-issue: 109521
+.. nonce: JDF6i9
+.. section: C API
+
+:c:func:`PyImport_GetImporter` now sets RuntimeError if it fails to get
+:data:`sys.path_hooks` or :data:`sys.path_importer_cache` or they are not
+list and dict correspondingly. Previously it could return NULL without
+setting error in obscure cases, crash or raise SystemError if these
+attributes have wrong type.
+
+..
+
+.. date: 2023-09-12-13-09-36
+.. gh-issue: 108724
+.. nonce: -yMsC8
+.. section: C API
+
+Add :c:type:`PyMutex` internal-only lightweight locking API.
+
+..
+
+.. date: 2023-09-06-00-14-49
+.. gh-issue: 85283
+.. nonce: GKY0Cc
+.. section: C API
+
+Add :c:func:`PySys_AuditTuple` function: similar to :c:func:`PySys_Audit`,
+but pass event arguments as a Python :class:`tuple` object.  Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-09-04-11-47-12
+.. gh-issue: 108867
+.. nonce: Cr_LKd
+.. section: C API
+
+Add :c:func:`PyThreadState_GetUnchecked()` function: similar to
+:c:func:`PyThreadState_Get()`, but don't kill the process with a fatal error
+if it is NULL. The caller is responsible to check if the result is NULL.
+Previously, the function was private and known as
+``_PyThreadState_UncheckedGet()``. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-02-22-35-55
+.. gh-issue: 108765
+.. nonce: 4TOdBT
+.. section: C API
+
+``Python.h`` no longer includes the ``<ctype.h>`` standard header file. If
+needed, it should now be included explicitly. For example, it provides
+``isalpha()`` and ``tolower()`` functions which are locale dependent. Python
+provides locale independent functions, like :c:func:`!Py_ISALPHA` and
+:c:func:`!Py_TOLOWER`. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-01-21-10-29
+.. gh-issue: 108765
+.. nonce: eeXtYF
+.. section: C API
+
+``Python.h`` no longer includes the ``<unistd.h>`` standard header file. If
+needed, it should now be included explicitly. For example, it provides the
+functions: ``close()``, ``getpagesize()``, ``getpid()`` and ``sysconf()``.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-01-20-41-49
+.. gh-issue: 108765
+.. nonce: 5dXc1r
+.. section: C API
+
+``Python.h`` no longer includes the ``<ieeefp.h>`` standard header. It was
+included for the ``finite()`` function which is now provided by the
+``<math.h>`` header. It should now be included explicitly if needed. Remove
+also the ``HAVE_IEEEFP_H`` macro. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-01-18-42-31
+.. gh-issue: 108765
+.. nonce: IyYNDu
+.. section: C API
+
+``Python.h`` no longer includes these standard header files: ``<time.h>``,
+``<sys/select.h>`` and ``<sys/time.h>``. If needed, they should now be
+included explicitly. For example, ``<time.h>`` provides the ``clock()`` and
+``gmtime()`` functions, ``<sys/select.h>`` provides the ``select()``
+function, and ``<sys/time.h>`` provides the ``futimes()``,
+``gettimeofday()`` and ``setitimer()`` functions. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-09-01-16-28-09
+.. gh-issue: 108511
+.. nonce: gg-QDG
+.. section: C API
+
+Add functions :c:func:`PyObject_HasAttrWithError`,
+:c:func:`PyObject_HasAttrStringWithError`,
+:c:func:`PyMapping_HasKeyWithError` and
+:c:func:`PyMapping_HasKeyStringWithError`.
+
+..
+
+.. date: 2023-09-01-15-35-05
+.. gh-issue: 107073
+.. nonce: zCz0iN
+.. section: C API
+
+Add :c:func:`PyObject_VisitManagedDict` and
+:c:func:`PyObject_ClearManagedDict` functions which must be called by the
+traverse and clear functions of a type using
+:c:macro:`Py_TPFLAGS_MANAGED_DICT` flag. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-30-02-54-06
+.. gh-issue: 108634
+.. nonce: oV3Xzk
+.. section: C API
+
+Python built with :file:`configure` :option:`--with-trace-refs` (tracing
+references) now supports the :ref:`Limited API <limited-c-api>`.  Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-08-24-20-08-02
+.. gh-issue: 108014
+.. nonce: 20DOSS
+.. section: C API
+
+Add :c:func:`PyLong_AsInt` function: similar to :c:func:`PyLong_AsLong`, but
+store the result in a C :c:expr:`int` instead of a C :c:expr:`long`.
+Previously, it was known as the private function :c:func:`!_PyLong_AsInt`
+(with an underscore prefix). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-22-18-45-20
+.. gh-issue: 108314
+.. nonce: nOlmwq
+.. section: C API
+
+Add :c:func:`PyDict_ContainsString` function: same as
+:c:func:`PyDict_Contains`, but *key* is specified as a :c:expr:`const char*`
+UTF-8 encoded bytes string, rather than a :c:expr:`PyObject*`. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-08-22-13-00-54
+.. gh-issue: 108337
+.. nonce: wceHZm
+.. section: C API
+
+Add atomic operations on additional data types in pyatomic.h.
+
+..
+
+.. date: 2023-08-16-17-16-19
+.. gh-issue: 108014
+.. nonce: wXN3CF
+.. section: C API
+
+Add :c:func:`Py_IsFinalizing` function: check if the main Python interpreter
+is :term:`shutting down <interpreter shutdown>`. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-08-14-10-59-03
+.. gh-issue: 107916
+.. nonce: KH4Muo
+.. section: C API
+
+C API functions :c:func:`PyErr_SetFromErrnoWithFilename`,
+:c:func:`PyErr_SetExcFromWindowsErrWithFilename` and
+:c:func:`PyErr_SetFromWindowsErrWithFilename` save now the error code before
+calling :c:func:`PyUnicode_DecodeFSDefault`.
+
+..
+
+.. date: 2023-08-13-12-33-00
+.. gh-issue: 107915
+.. nonce: jQ0wOi
+.. section: C API
+
+Such C API functions as ``PyErr_SetString()``, ``PyErr_Format()``,
+``PyErr_SetFromErrnoWithFilename()`` and many others no longer crash or
+ignore errors if it failed to format the error message or decode the
+filename. Instead, they keep a corresponding error.
+
+..
+
+.. date: 2023-08-10-11-12-25
+.. gh-issue: 107810
+.. nonce: oJ40Qx
+.. section: C API
+
+Improve :exc:`DeprecationWarning` for uses of :c:type:`PyType_Spec` with
+metaclasses that have custom ``tp_new``.
+
+..
+
+.. date: 2023-07-25-17-23-08
+.. gh-issue: 107249
+.. nonce: xqk2ke
+.. section: C API
+
+Implement the :c:macro:`Py_UNUSED` macro for Windows MSVC compiler. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-07-25-13-41-09
+.. gh-issue: 107226
+.. nonce: N919zH
+.. section: C API
+
+:c:func:`PyModule_AddObjectRef` is now only available in the limited API
+version 3.10 or later.
+
+..
+
+.. date: 2023-07-22-14-40-48
+.. gh-issue: 106320
+.. nonce: H3u7x4
+.. section: C API
+
+Remove private ``_PyUnicode_AsString()`` alias to
+:c:func:`PyUnicode_AsUTF8`. It was kept for backward compatibility with
+Python 3.0 - 3.2. The :c:func:`PyUnicode_AsUTF8` is available since Python
+3.3. The :c:func:`PyUnicode_AsUTF8String` function can be used to keep
+compatibility with Python 3.2 and older. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-07-11-01-07-39
+.. gh-issue: 106572
+.. nonce: y1b35X
+.. section: C API
+
+Convert :c:func:`PyObject_DelAttr` and :c:func:`PyObject_DelAttrString`
+macros to functions. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-07-08-12-24-17
+.. gh-issue: 106307
+.. nonce: FVnkBw
+.. section: C API
+
+Add :c:func:`PyMapping_GetOptionalItem` function.
+
+..
+
+.. date: 2023-07-07-19-14-00
+.. gh-issue: 106521
+.. nonce: Veh9f3
+.. section: C API
+
+Add :c:func:`PyObject_GetOptionalAttr` and
+:c:func:`PyObject_GetOptionalAttrString` functions.
+
+..
+
+.. date: 2023-07-02-00-00-20
+.. gh-issue: 106320
+.. nonce: tZWcvG
+.. section: C API
+
+Remove ``_PyInterpreterState_Get()`` alias to
+:c:func:`PyInterpreterState_Get()` which was kept for backward compatibility
+with Python 3.8. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-07-01-21-23-33
+.. gh-issue: 106316
+.. nonce: hp2Ijw
+.. section: C API
+
+Remove ``cpython/pytime.h`` header file: it only contained private
+functions. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-30-09-33-25
+.. gh-issue: 106023
+.. nonce: YvYiE4
+.. section: C API
+
+Remove private ``_PyObject_FastCall()`` function: use
+``PyObject_Vectorcall()`` which is available since Python 3.8 (:pep:`590`).
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-28-02-30-50
+.. gh-issue: 106168
+.. nonce: NFOZPv
+.. section: C API
+
+If Python is built in :ref:`debug mode <debug-build>` or :option:`with
+assertions <--with-assertions>`, :c:func:`PyTuple_SET_ITEM` and
+:c:func:`PyList_SET_ITEM` now check the index argument with an assertion. If
+the assertion fails, make sure that the size is set before. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-06-25-18-01-27
+.. gh-issue: 106084
+.. nonce: PEzqU3
+.. section: C API
+
+Remove the old aliases to functions calling functions which were kept for
+backward compatibility with Python 3.8 provisional API:
+
+* ``_PyObject_CallMethodNoArgs()``: use ``PyObject_CallMethodNoArgs()``
+* ``_PyObject_CallMethodOneArg()``: use ``PyObject_CallMethodOneArg()``
+* ``_PyObject_CallOneArg()``: use ``PyObject_CallOneArg()``
+* ``_PyObject_FastCallDict()``: use ``PyObject_VectorcallDict()``
+* ``_PyObject_Vectorcall()``: use ``PyObject_Vectorcall()``
+* ``_PyObject_VectorcallMethod()``: use ``PyObject_VectorcallMethod()``
+* ``_PyVectorcall_Function()``: use ``PyVectorcall_Function()``
+
+Just remove the underscore prefix to update your code. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-06-23-02-57-15
+.. gh-issue: 106004
+.. nonce: -OToh6
+.. section: C API
+
+Adds :c:func:`PyDict_GetItemRef` and :c:func:`PyDict_GetItemStringRef`
+functions: similar to :c:func:`PyDict_GetItemWithError` but returning a
+:term:`strong reference` instead of a :term:`borrowed reference`. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-06-22-00-25-55
+.. gh-issue: 105927
+.. nonce: GRxZtI
+.. section: C API
+
+Deprecate the :c:func:`PyWeakref_GetObject` and
+:c:func:`PyWeakref_GET_OBJECT` functions: use the new
+:c:func:`PyWeakref_GetRef` function instead. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-20-08-59-05
+.. gh-issue: 105927
+.. nonce: DfGeEA
+.. section: C API
+
+Add :c:func:`PyWeakref_GetRef` function: similar to
+:c:func:`PyWeakref_GetObject` but returns a :term:`strong reference`, or
+``NULL`` if the referent is no longer live. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-19-20-02-16
+.. gh-issue: 105922
+.. nonce: o4T6wO
+.. section: C API
+
+Add :c:func:`PyImport_AddModuleRef`: similar to
+:c:func:`PyImport_AddModule`, but return a :term:`strong reference` instead
+of a :term:`borrowed reference`. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-13-14-24-55
+.. gh-issue: 105227
+.. nonce: HDL9aF
+.. section: C API
+
+The new :c:func:`PyType_GetDict` provides the dictionary for the given type
+object that is normally exposed by ``cls.__dict__``.  Normally it's
+sufficient to use :c:member:`~PyTypeObject.tp_dict`, but for the static
+builtin types :c:member:`!tp_dict` is now always ``NULL``.
+:c:func:`!PyType_GetDict()` provides the correct dict object instead.
+
+..
+
+.. date: 2023-06-09-23-34-25
+.. gh-issue: 105375
+.. nonce: n7amiF
+.. section: C API
+
+Fix a bug in :c:func:`PyErr_WarnExplicit` where an exception could end up
+being overwritten if the API failed internally.
+
+..
+
+.. date: 2023-06-09-19-16-57
+.. gh-issue: 105603
+.. nonce: -z6G22
+.. section: C API
+
+We've renamed the new (in 3.12) ``PyInterpreterConfig.own_gil`` to
+``PyInterpreterConfig.gil`` and changed the meaning of the value from "bool"
+to an integer with supported values of ``PyInterpreterConfig_DEFAULT_GIL``,
+``PyInterpreterConfig_SHARED_GIL``, and ``PyInterpreterConfig_OWN_GIL``. The
+default is "shared".
+
+..
+
+.. date: 2023-06-09-12-35-55
+.. gh-issue: 105387
+.. nonce: wM_oL-
+.. section: C API
+
+In the limited C API version 3.12, :c:func:`Py_INCREF` and
+:c:func:`Py_DECREF` functions are now implemented as opaque function calls
+to hide implementation details. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-06-17-43-28
+.. gh-issue: 105396
+.. nonce: FQJG5B
+.. section: C API
+
+Deprecate the :c:func:`PyImport_ImportModuleNoBlock` function which is just
+an alias to :c:func:`PyImport_ImportModule` since Python 3.3. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-06-06-14-14-41
+.. gh-issue: 103968
+.. nonce: BTO6II
+.. section: C API
+
+:c:func:`PyType_FromMetaclass` now allows metaclasses with ``tp_new`` set to
+``NULL``.
+
+..
+
+.. date: 2023-06-06-10-57-18
+.. gh-issue: 105268
+.. nonce: OTJUko
+.. section: C API
+
+Remove the old private, undocumented and untested ``_PyGC_FINALIZED()``
+macro which was kept for backward compatibility with Python 3.8 and older.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-01-11-24-03
+.. gh-issue: 105182
+.. nonce: l5sCw4
+.. section: C API
+
+Remove ``PyEval_AcquireLock()`` and ``PyEval_ReleaseLock()`` functions,
+deprecated in Python 3.2. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-01-11-23-28
+.. gh-issue: 105182
+.. nonce: kLEHl-
+.. section: C API
+
+Remove ``PyEval_InitThreads()`` and ``PyEval_ThreadsInitialized()``
+functions, deprecated in Python 3.9. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-06-01-09-40-30
+.. gh-issue: 105145
+.. nonce: WOOE-w
+.. section: C API
+
+Deprecate old Python initialization functions:
+
+* :c:func:`PySys_ResetWarnOptions`
+* :c:func:`Py_GetExecPrefix`
+* :c:func:`Py_GetPath`
+* :c:func:`Py_GetPrefix`
+* :c:func:`Py_GetProgramFullPath`
+* :c:func:`Py_GetProgramName`
+* :c:func:`Py_GetPythonHome`
+
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-31-19-38-45
+.. gh-issue: 85275
+.. nonce: doojgE
+.. section: C API
+
+``PyObject_AsCharBuffer()``, ``PyObject_AsReadBuffer()``,
+``PyObject_CheckReadBuffer()``, and ``PyObject_AsWriteBuffer()`` are
+removed. Please migrate to new buffer protocol; :c:func:`PyObject_GetBuffer`
+and :c:func:`PyBuffer_Release`.
+
+..
+
+.. date: 2023-05-31-18-37-57
+.. gh-issue: 105156
+.. nonce: R4El5V
+.. section: C API
+
+Deprecate the old ``Py_UNICODE`` and ``PY_UNICODE_TYPE`` types: use directly
+the :c:type:`wchar_t` type instead. Since Python 3.3, ``Py_UNICODE`` and
+``PY_UNICODE_TYPE`` are just aliases to :c:type:`wchar_t`. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-05-31-16-51-18
+.. gh-issue: 105145
+.. nonce: b3B6lJ
+.. section: C API
+
+Remove the following old functions to configure the Python initialization,
+deprecated in Python 3.11:
+
+* ``PySys_AddWarnOptionUnicode()``
+* ``PySys_AddWarnOption()``
+* ``PySys_AddXOption()``
+* ``PySys_HasWarnOptions()``
+* ``PySys_SetArgvEx()``
+* ``PySys_SetArgv()``
+* ``PySys_SetPath()``
+* ``Py_SetPath()``
+* ``Py_SetProgramName()``
+* ``Py_SetPythonHome()``
+* ``Py_SetStandardStreamEncoding()``
+* ``_Py_SetProgramFullPath()``
+
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-30-19-11-09
+.. gh-issue: 105107
+.. nonce: YQwMnm
+.. section: C API
+
+Remove functions deprecated in Python 3.9.
+
+* ``PyEval_CallObject()``, ``PyEval_CallObjectWithKeywords()``: use
+  :c:func:`PyObject_CallNoArgs` and :c:func:`PyObject_Call` (positional
+  arguments must not be *NULL*) instead.
+* ``PyEval_CallFunction()``: use :c:func:`PyObject_CallFunction` instead.
+* ``PyEval_CallMethod()``: use :c:func:`PyObject_CallMethod` instead.
+* ``PyCFunction_Call()``: use :c:func:`PyObject_Call` instead.
+
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-05-30-17-45-32
+.. gh-issue: 105115
+.. nonce: iRho1K
+.. section: C API
+
+``PyTypeObject.tp_bases`` (and ``tp_mro``) for builtin static types are now
+shared by all interpreters, whereas in 3.12-beta1 they were stored on
+``PyInterpreterState``.  Also note that now the tuples are immortal objects.
+
+..
+
+.. date: 2023-05-30-10-15-13
+.. gh-issue: 105071
+.. nonce: dPtp7c
+.. section: C API
+
+Add ``PyUnstable_Exc_PrepReraiseStar`` to the unstable C api to expose the
+implementation of :keyword:`except* <except_star>`.
+
+..
+
+.. date: 2023-05-29-16-09-27
+.. gh-issue: 104922
+.. nonce: L23qaU
+.. section: C API
+
+``PY_SSIZE_T_CLEAN`` is no longer required to use ``'#'`` formats in APIs
+like :c:func:`PyArg_ParseTuple` and :c:func:`Py_BuildValue`. They uses
+``Py_ssize_t`` for ``'#'`` regardless ``PY_SSIZE_T_CLEAN``.
+
+..
+
+.. date: 2023-05-25-15-44-48
+.. gh-issue: 104584
+.. nonce: cSAoRh
+.. section: C API
+
+Add an unstable C API for hooking in an optimizer. This is mainly internal,
+but marked "unstable" to allow third-party experimentation.
+
+..
+
+.. date: 2023-05-19-10-22-34
+.. gh-issue: 104668
+.. nonce: MLX1g9
+.. section: C API
+
+Don't call :c:var:`PyOS_InputHook` or :c:var:`PyOS_ReadlineFunctionPointer`
+in subinterpreters, since it's generally difficult to avoid using global
+state in their registered callbacks. This also avoids situations where
+extensions may find themselves running in a subinterpreter they don't
+support (or haven't yet been loaded in).
+
+..
+
+.. bpo: 42327
+.. date: 2020-11-11-22-36-29
+.. nonce: ODSZBM
+.. section: C API
+
+Add :c:func:`PyModule_Add` function: similar to
+:c:func:`PyModule_AddObjectRef` and :c:func:`PyModule_AddObject`, but always
+steals a reference to the value.
+
+..
+
+.. bpo: 40309
+.. date: 2020-06-25-09-44-59
+.. nonce: CuoGoQ
+.. section: C API
+
+Properly handle trailing spaces before closing parenthesis in
+:c:func:`Py_BuildValue` format strings.
diff --git a/Misc/NEWS.d/3.13.0a2.rst b/Misc/NEWS.d/3.13.0a2.rst
new file mode 100644
index 00000000000000..c1b1be523325e8
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0a2.rst
@@ -0,0 +1,1622 @@
+.. date: 2023-11-20-14-13-02
+.. gh-issue: 112243
+.. nonce: FKdQnr
+.. release date: 2023-11-22
+.. section: Core and Builtins
+
+Don't include comments in f-string debug expressions. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-11-20-10-40-40
+.. gh-issue: 112287
+.. nonce: 15gWAK
+.. section: Core and Builtins
+
+Slightly optimize the Tier 2 (uop) interpreter by only loading ``oparg`` and
+``operand`` when needed. Also double the trace size limit again, to 512 this
+time.
+
+..
+
+.. date: 2023-11-19-15-57-23
+.. gh-issue: 112266
+.. nonce: BSJMbR
+.. section: Core and Builtins
+
+Change docstrings of :attr:`~object.__dict__` and
+:attr:`~object.__weakref__`.
+
+..
+
+.. date: 2023-11-17-16-49-32
+.. gh-issue: 111807
+.. nonce: QvjP9_
+.. section: Core and Builtins
+
+Lower the max parser stack depth to 1000 under WASI debug builds.
+
+..
+
+.. date: 2023-11-15-20-20-51
+.. gh-issue: 111798
+.. nonce: cs-3t3
+.. section: Core and Builtins
+
+When Python is built in debug mode, set the C recursion limit to 500 instead
+of 1500. A debug build is likely built with low optimization level which
+implies higher stack memory usage than a release build. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-11-15-16-14-10
+.. gh-issue: 106529
+.. nonce: Y48ax9
+.. section: Core and Builtins
+
+Enable translating unspecialized ``FOR_ITER`` to Tier 2.
+
+..
+
+.. date: 2023-11-14-22-12-11
+.. gh-issue: 111916
+.. nonce: ZGCayL
+.. section: Core and Builtins
+
+Make hashlib related modules thread-safe without the GIL
+
+..
+
+.. date: 2023-11-07-12-59-02
+.. gh-issue: 81137
+.. nonce: qFpJCY
+.. section: Core and Builtins
+
+Deprecate assignment to a function's ``__code__`` field when the new code
+object is of a mismatched type (e.g., from a generator to a plain function).
+
+..
+
+.. date: 2023-11-06-16-44-09
+.. gh-issue: 79932
+.. nonce: 2qv7uD
+.. section: Core and Builtins
+
+Raise exception if :meth:`frame.clear` is called on a suspended frame.
+
+..
+
+.. date: 2023-11-05-20-59-10
+.. gh-issue: 81925
+.. nonce: wKHLSS
+.. section: Core and Builtins
+
+Implement native thread ids for GNU KFreeBSD.
+
+..
+
+.. date: 2023-11-05-06-40-35
+.. gh-issue: 111843
+.. nonce: c045cB
+.. section: Core and Builtins
+
+Use exponential backoff to reduce the number of failed tier 2 optimization
+attempts by over 99%.
+
+..
+
+.. date: 2023-11-04-13-36-51
+.. gh-issue: 110829
+.. nonce: Pa0CJI
+.. section: Core and Builtins
+
+Joining a thread now ensures the underlying OS thread has exited. This is
+required for safer fork() in multi-threaded processes.
+
+..
+
+.. date: 2023-11-03-22-48-29
+.. gh-issue: 109369
+.. nonce: ELYaxJ
+.. section: Core and Builtins
+
+Make sure that tier 2 traces are de-optimized if the code is instrumented
+
+..
+
+.. date: 2023-11-03-19-25-38
+.. gh-issue: 111772
+.. nonce: aRQvOn
+.. section: Core and Builtins
+
+Specialize slot loads and stores for _Py_T_OBJECT as well as Py_T_OBJECT_EX
+
+..
+
+.. date: 2023-11-03-01-23-48
+.. gh-issue: 111666
+.. nonce: l8Q8G5
+.. section: Core and Builtins
+
+Speed up :meth:`BaseExceptionGroup.derive`,
+:meth:`BaseExceptionGroup.subgroup`, and :meth:`BaseExceptionGroup.split` by
+changing how they parse passed arguments.
+
+..
+
+.. date: 2023-11-03-01-04-55
+.. gh-issue: 111654
+.. nonce: scUhDO
+.. section: Core and Builtins
+
+Fix runtime crash when some error happens in opcode
+``LOAD_FROM_DICT_OR_DEREF``.
+
+..
+
+.. date: 2023-11-02-15-00-57
+.. gh-issue: 111623
+.. nonce: BZxYc8
+.. section: Core and Builtins
+
+Add support for sharing tuples between interpreters using the
+cross-interpreter API.  Patch by Anthony Shaw.
+
+..
+
+.. date: 2023-11-02-14-49-19
+.. gh-issue: 111354
+.. nonce: gIS3f-
+.. section: Core and Builtins
+
+The oparg of :opcode:`YIELD_VALUE` is now ``1`` if the instruction is part
+of a yield-from or await, and ``0`` otherwise.
+
+The SUSPENDED frame state is now split into ``SUSPENDED`` and
+``SUSPENDED_YIELD_FROM``. This simplifies the code in ``_PyGen_yf``.
+
+..
+
+.. date: 2023-10-31-21-33-35
+.. gh-issue: 111520
+.. nonce: vw-rxJ
+.. section: Core and Builtins
+
+Merge the Tier 1 (bytecode) and Tier 2 (micro-ops) interpreters together,
+moving the Tier 2 interpreter loop and switch into
+``_PyEval_EvalFrameDefault()`` in ``Python/ceval.c``. The
+``Python/executor.c`` file is gone. Also the ``TIER_ONE`` and ``TIER_TWO``
+macros are now handled by the code generator.
+
+**Beware!** This changes the environment variables to enable micro-ops and
+their debugging to ``PYTHON_UOPS`` and ``PYTHON_LLTRACE``.
+
+..
+
+.. date: 2023-10-31-14-25-21
+.. gh-issue: 109181
+.. nonce: 11h6Mc
+.. section: Core and Builtins
+
+Speed up :obj:`Traceback` object creation by lazily compute the line number.
+Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-29-20-11-21
+.. gh-issue: 111420
+.. nonce: IUT-GK
+.. section: Core and Builtins
+
+Allow type comments in parenthesized ``with`` statements
+
+..
+
+.. date: 2023-10-29-12-33-33
+.. gh-issue: 111438
+.. nonce: bHTLLl
+.. section: Core and Builtins
+
+Add support for sharing floats between interpreters using the
+cross-interpreter API.  Patch by Anthony Shaw.
+
+..
+
+.. date: 2023-10-29-11-35-21
+.. gh-issue: 111435
+.. nonce: ageUWQ
+.. section: Core and Builtins
+
+Add support for sharing of True and False between interpreters using the
+cross-interpreter API.  Patch by Anthony Shaw.
+
+..
+
+.. date: 2023-10-27-19-38-33
+.. gh-issue: 102388
+.. nonce: vd5YUZ
+.. section: Core and Builtins
+
+Fix a bug where ``iso2022_jp_3`` and ``iso2022_jp_2004`` codecs read out of
+bounds
+
+..
+
+.. date: 2023-10-27-12-17-49
+.. gh-issue: 111366
+.. nonce: _TSknV
+.. section: Core and Builtins
+
+Fix an issue in the :mod:`codeop` that was causing :exc:`SyntaxError`
+exceptions raised in the presence of invalid syntax to not contain precise
+error messages. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-27-11-51-40
+.. gh-issue: 111380
+.. nonce: vgSbir
+.. section: Core and Builtins
+
+Fix a bug that was causing :exc:`SyntaxWarning` to appear twice when parsing
+if invalid syntax is encountered later. Patch by Pablo galindo
+
+..
+
+.. date: 2023-10-27-11-22-09
+.. gh-issue: 111374
+.. nonce: e9lrPZ
+.. section: Core and Builtins
+
+Added a new environment variable :envvar:`PYTHON_FROZEN_MODULES`. It
+determines whether or not frozen modules are ignored by the import
+machinery, equivalent of the :option:`-X frozen_modules <-X>` command-line
+option.
+
+..
+
+.. date: 2023-10-26-18-45-20
+.. gh-issue: 111354
+.. nonce: GrT-Wf
+.. section: Core and Builtins
+
+Remove ``oparg`` from :opcode:`YIELD_VALUE`. Change ``oparg`` of
+:opcode:`RESUME` to include information about the except-depth. These
+changes make it possible to simplify the code in generator close.
+
+..
+
+.. date: 2023-10-23-22-11-09
+.. gh-issue: 94438
+.. nonce: y2pITu
+.. section: Core and Builtins
+
+Fix a regression that prevented jumping across ``is None`` and ``is not
+None`` when debugging. Patch by Savannah Ostrowski.
+
+..
+
+.. date: 2023-10-23-15-44-47
+.. gh-issue: 67224
+.. nonce: S4D6CR
+.. section: Core and Builtins
+
+Show source lines in tracebacks when using the ``-c`` option when running
+Python. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-20-23-14-06
+.. gh-issue: 111123
+.. nonce: jjVc3M
+.. section: Core and Builtins
+
+Fix a bug where a :keyword:`global` declaration in an :keyword:`except`
+block is rejected when the global is used in the :keyword:`else` block.
+
+..
+
+.. date: 2023-10-17-11-03-45
+.. gh-issue: 110938
+.. nonce: X3sbMb
+.. section: Core and Builtins
+
+Fix error messages for indented blocks with functions and classes with
+generic type parameters. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-16-15-51-37
+.. gh-issue: 109214
+.. nonce: -RGTFH
+.. section: Core and Builtins
+
+Remove unnecessary instruction pointer updates before returning from frames.
+
+..
+
+.. date: 2023-10-16-12-12-48
+.. gh-issue: 110912
+.. nonce: uEJGi_
+.. section: Core and Builtins
+
+Correctly display the traceback for :exc:`MemoryError` exceptions using the
+:mod:`traceback` module. Patch by Pablo Galindo
+
+..
+
+.. date: 2023-10-15-22-18-45
+.. gh-issue: 109894
+.. nonce: UAmo06
+.. section: Core and Builtins
+
+Fixed crash due to improperly initialized static :exc:`MemoryError` in
+subinterpreter.
+
+..
+
+.. date: 2023-10-15-20-45-35
+.. gh-issue: 110892
+.. nonce: oA6eVY
+.. section: Core and Builtins
+
+Return ``NULL`` for ``PyTrace_RETURN`` events caused by an exception
+
+..
+
+.. date: 2023-10-14-12-19-34
+.. gh-issue: 110864
+.. nonce: -baPDE
+.. section: Core and Builtins
+
+Fix argument parsing by ``_PyArg_UnpackKeywordsWithVararg`` for functions
+defining pos-or-keyword, vararg, and kw-only parameters.
+
+..
+
+.. date: 2023-10-13-16-55-55
+.. gh-issue: 109094
+.. nonce: ziL4cJ
+.. section: Core and Builtins
+
+Replace ``prev_instr`` on the interpreter frame by ``instr_ptr`` which
+points to the beginning of the instruction that is currently executing (or
+will execute once the frame resumes).
+
+..
+
+.. date: 2023-10-13-09-21-29
+.. gh-issue: 110805
+.. nonce: vhU7A7
+.. section: Core and Builtins
+
+Allow the repl to show source code and complete tracebacks. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2023-10-12-17-15-23
+.. gh-issue: 110722
+.. nonce: sjMwQe
+.. section: Core and Builtins
+
+Add :envvar:`PYTHON_PRESITE=package.module` to import a module early in the
+interpreter lifecycle before ``site.py`` is executed.  Python needs to be
+:ref:`built in debug mode <debug-build>` for this option to exist.
+
+..
+
+.. date: 2023-10-12-12-09-01
+.. gh-issue: 110481
+.. nonce: 3Er3it
+.. section: Core and Builtins
+
+Implement biased reference counting in ``--disable-gil`` builds.
+
+..
+
+.. date: 2023-10-09-19-54-33
+.. gh-issue: 110543
+.. nonce: 1wrxO8
+.. section: Core and Builtins
+
+Fix regression in Python 3.12 where :meth:`types.CodeType.replace` would
+produce a broken code object if called on a module or class code object that
+contains a comprehension. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2023-09-30-17-30-11
+.. gh-issue: 89519
+.. nonce: hz2pZf
+.. section: Core and Builtins
+
+Removed chained :class:`classmethod` descriptors (introduced in
+:issue:`19072`).  This can no longer be used to wrap other descriptors such
+as :class:`property`.  The core design of this feature was flawed and caused
+a number of downstream problems.  To "pass-through" a :class:`classmethod`,
+consider using the :attr:`!__wrapped__` attribute that was added in Python
+3.10.
+
+..
+
+.. date: 2023-09-15-23-39-43
+.. gh-issue: 103615
+.. nonce: WZavly
+.. section: Core and Builtins
+
+Use local events for opcode tracing
+
+..
+
+.. bpo: 46657
+.. date: 2023-09-06-12-36-11
+.. nonce: xea1T_
+.. section: Core and Builtins
+
+Add mimalloc memory allocator support.
+
+..
+
+.. date: 2023-08-31-11-42-16
+.. gh-issue: 106718
+.. nonce: _-57DA
+.. section: Core and Builtins
+
+When PyConfig.stdlib_dir is explicitly set, it's now respected and won't be
+overridden by PyConfig.home.
+
+..
+
+.. date: 2023-07-20-11-41-16
+.. gh-issue: 106905
+.. nonce: AyZpuB
+.. section: Core and Builtins
+
+Fix incorrect SystemError about AST constructor recursion depth mismatch.
+
+..
+
+.. date: 2022-12-27-02-51-45
+.. gh-issue: 100445
+.. nonce: C8f6ph
+.. section: Core and Builtins
+
+Improve error message for unterminated strings with escapes.
+
+..
+
+.. bpo: 45759
+.. date: 2021-11-10-10-40-05
+.. nonce: WJoB3D
+.. section: Core and Builtins
+
+Improved error messages for ``elif``/``else`` statements not matching any
+valid statements. Patch by Jeremiah Vivian.
+
+..
+
+.. date: 2023-11-14-18-43-55
+.. gh-issue: 111942
+.. nonce: x1pnrj
+.. section: Library
+
+Fix SystemError in the TextIOWrapper constructor with non-encodable "errors"
+argument in non-debug mode.
+
+..
+
+.. date: 2023-11-14-16-31-59
+.. gh-issue: 111995
+.. nonce: OoX8JJ
+.. section: Library
+
+Added the ``NI_IDN`` constant to the :mod:`socket` module when present in C
+at build time for use with :func:`socket.getnameinfo`.
+
+..
+
+.. date: 2023-11-11-16-42-48
+.. gh-issue: 109538
+.. nonce: cMG5ux
+.. section: Library
+
+Issue warning message instead of having :class:`RuntimeError` be displayed
+when event loop has already been closed at :meth:`StreamWriter.__del__`.
+
+..
+
+.. date: 2023-11-10-22-08-28
+.. gh-issue: 111942
+.. nonce: MDFm6v
+.. section: Library
+
+Fix crashes in :meth:`io.TextIOWrapper.reconfigure` when pass invalid
+arguments, e.g. non-string encoding.
+
+..
+
+.. date: 2023-11-09-12-57-43
+.. gh-issue: 111460
+.. nonce: TQaz9I
+.. section: Library
+
+:mod:`curses`: restore wide character support (including
+:func:`curses.unget_wch` and :meth:`~curses.window.get_wch`) on macOS, which
+was unavailable due to a regression in Python 3.12.
+
+..
+
+.. date: 2023-11-09-10-45-56
+.. gh-issue: 103791
+.. nonce: sdfkja
+.. section: Library
+
+:class:`contextlib.suppress` now supports suppressing exceptions raised as
+part of a :exc:`BaseExceptionGroup`, in addition to the recent support for
+:exc:`ExceptionGroup`.
+
+..
+
+.. date: 2023-11-08-23-32-03
+.. gh-issue: 111835
+.. nonce: ufFiuW
+.. section: Library
+
+The :class:`mmap.mmap` class now has an :meth:`~mmap.mmap.seekable` method
+that can be used where it requires a file-like object with seekable and the
+:meth:`~mmap.mmap.seek` method return the new absolute position. Patch by
+Donghee Na.
+
+..
+
+.. date: 2023-11-08-15-58-57
+.. gh-issue: 111804
+.. nonce: uAXTOL
+.. section: Library
+
+Remove posix.fallocate() under WASI as the underlying posix_fallocate() is
+not available in WASI preview2.
+
+..
+
+.. date: 2023-11-08-11-50-49
+.. gh-issue: 111841
+.. nonce: iSqdQf
+.. section: Library
+
+Fix truncating arguments on an embedded null character in :meth:`os.putenv`
+and :meth:`os.unsetenv` on Windows.
+
+..
+
+.. date: 2023-11-08-07-42-53
+.. gh-issue: 111768
+.. nonce: g-WpnV
+.. section: Library
+
+:func:`wsgiref.util.is_hop_by_hop` is now exposed correctly in ``__all__``.
+
+..
+
+.. date: 2023-11-04-21-12-27
+.. gh-issue: 80731
+.. nonce: Wq51xg
+.. section: Library
+
+Avoid executing the default function in :class:`cmd.Cmd` in an except block
+
+..
+
+.. date: 2023-11-04-10-24-25
+.. gh-issue: 111541
+.. nonce: x0RBI1
+.. section: Library
+
+Fix :mod:`doctest` for :exc:`SyntaxError` not-builtin subclasses.
+
+..
+
+.. date: 2023-11-04-01-20-23
+.. gh-issue: 111719
+.. nonce: fUiKBD
+.. section: Library
+
+Add extra argument validation for ``alias`` command in :mod:`pdb`
+
+..
+
+.. date: 2023-11-02-12-15-46
+.. gh-issue: 111482
+.. nonce: FWqZIU
+.. section: Library
+
+:mod:`time`: Make :func:`time.clock_gettime()` and
+:func:`time.clock_gettime_ns()` functions up to 2x faster by faster calling
+convention. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-11-01-14-03-24
+.. gh-issue: 110894
+.. nonce: 7-wZxC
+.. section: Library
+
+Call loop exception handler for exceptions in ``client_connected_cb`` of
+:func:`asyncio.start_server` so that applications can handle it. Patch by
+Kumar Aditya.
+
+..
+
+.. date: 2023-10-31-07-46-56
+.. gh-issue: 111531
+.. nonce: 6zUV_G
+.. section: Library
+
+Fix reference leaks in ``bind_class()`` and ``bind_all()`` methods of
+:mod:`tkinter` widgets.
+
+..
+
+.. date: 2023-10-30-14-47-23
+.. gh-issue: 111246
+.. nonce: QJ_ehs
+.. section: Library
+
+:meth:`asyncio.loop.create_unix_server` will now automatically remove the
+Unix socket when the server is closed.
+
+..
+
+.. date: 2023-10-30-08-50-46
+.. gh-issue: 111356
+.. nonce: Bc8LvA
+.. section: Library
+
+Added :func:`io.text_encoding()`, :data:`io.DEFAULT_BUFFER_SIZE`, and
+:class:`io.IncrementalNewlineDecoder` to ``io.__all__``.
+
+..
+
+.. date: 2023-10-29-03-46-27
+.. gh-issue: 66425
+.. nonce: FWTdDo
+.. section: Library
+
+Remove the code to set the REMOTE_HOST header from wsgiref module, as it is
+unreachable. This header is used for performance reasons, which is not
+necessary in the wsgiref module.
+
+..
+
+.. date: 2023-10-28-22-11-11
+.. gh-issue: 111429
+.. nonce: mJGxuQ
+.. section: Library
+
+Speed up :meth:`pathlib.PurePath.relative_to` and
+:meth:`~pathlib.PurePath.is_relative_to`.
+
+..
+
+.. date: 2023-10-28-04-21-17
+.. gh-issue: 111342
+.. nonce: m8Ln1k
+.. section: Library
+
+Fixed typo in :func:`math.sumprod`.
+
+..
+
+.. date: 2023-10-27-12-46-56
+.. gh-issue: 68166
+.. nonce: 0EbWW4
+.. section: Library
+
+Remove mention of not supported "vsapi" element type in
+:meth:`tkinter.ttk.Style.element_create`. Add tests for ``element_create()``
+and other ``ttk.Style`` methods. Add examples for ``element_create()`` in
+the documentation.
+
+..
+
+.. date: 2023-10-27-09-56-20
+.. gh-issue: 111388
+.. nonce: SlmDbC
+.. section: Library
+
+Add ``show_group`` parameter to :func:`traceback.format_exception_only`,
+which allows to format :exc:`ExceptionGroup` instances.
+
+..
+
+.. date: 2023-10-25-11-54-00
+.. gh-issue: 79033
+.. nonce: 5ePgFl
+.. section: Library
+
+Another attempt at fixing :func:`asyncio.Server.wait_closed()`. It now
+blocks until both conditions are true: the server is closed, *and* there are
+no more active connections. (This means that in some cases where in 3.12.0
+this function would *incorrectly* have returned immediately, it will now
+block; in particular, when there are no active connections but the server
+hasn't been closed yet.)
+
+..
+
+.. date: 2023-10-25-11-13-35
+.. gh-issue: 111259
+.. nonce: z7ndeA
+.. section: Library
+
+Optimize recursive wildcards in :mod:`pathlib`.
+
+..
+
+.. date: 2023-10-25-08-42-05
+.. gh-issue: 111295
+.. nonce: H2K4lf
+.. section: Library
+
+Fix :mod:`time` not checking for errors when initializing.
+
+..
+
+.. date: 2023-10-24-12-20-46
+.. gh-issue: 111253
+.. nonce: HFywSK
+.. section: Library
+
+Add error checking during :mod:`!_socket` module init.
+
+..
+
+.. date: 2023-10-24-12-09-46
+.. gh-issue: 111251
+.. nonce: urFYtn
+.. section: Library
+
+Fix :mod:`_blake2` not checking for errors when initializing.
+
+..
+
+.. date: 2023-10-23-23-14-54
+.. gh-issue: 111233
+.. nonce: sCdCC0
+.. section: Library
+
+Fix :mod:`select` not checking for errors when initializing.
+
+..
+
+.. date: 2023-10-23-22-40-47
+.. gh-issue: 111230
+.. nonce: k3Jm84
+.. section: Library
+
+Fix :mod:`ssl` not checking for errors when initializing.
+
+..
+
+.. date: 2023-10-23-13-53-58
+.. gh-issue: 111174
+.. nonce: Oohmzd
+.. section: Library
+
+Fix crash in :meth:`io.BytesIO.getbuffer` called repeatedly for empty
+BytesIO.
+
+..
+
+.. date: 2023-10-22-21-28-05
+.. gh-issue: 111187
+.. nonce: _W11Ab
+.. section: Library
+
+Postpone removal version for locale.getdefaultlocale() to Python 3.15.
+
+..
+
+.. date: 2023-10-21-13-57-06
+.. gh-issue: 111159
+.. nonce: GoHp7s
+.. section: Library
+
+Fix :mod:`doctest` output comparison for exceptions with notes.
+
+..
+
+.. date: 2023-10-20-15-29-10
+.. gh-issue: 110910
+.. nonce: u2oPwX
+.. section: Library
+
+Fix invalid state handling in :class:`asyncio.TaskGroup` and
+:class:`asyncio.Timeout`. They now raise proper RuntimeError if they are
+improperly used and are left in consistent state after this.
+
+..
+
+.. date: 2023-10-19-22-46-34
+.. gh-issue: 111092
+.. nonce: hgut12
+.. section: Library
+
+Make turtledemo run without default root enabled.
+
+..
+
+.. date: 2023-10-16-18-41-51
+.. gh-issue: 110944
+.. nonce: CmUKXo
+.. section: Library
+
+Support alias and convenience vars for :mod:`pdb` completion
+
+..
+
+.. date: 2023-10-15-08-08-26
+.. gh-issue: 110745
+.. nonce: mxEkh0
+.. section: Library
+
+Added *newline* parameter to :meth:`pathlib.Path.read_text`. Patch by Junya
+Okabe.
+
+..
+
+.. date: 2023-10-14-21-33-57
+.. gh-issue: 84583
+.. nonce: -Cmn4_
+.. section: Library
+
+Make :mod:`pdb` enter post-mortem mode even for :exc:`SyntaxError`
+
+..
+
+.. date: 2023-10-14-20-15-53
+.. gh-issue: 80675
+.. nonce: _M-cQC
+.. section: Library
+
+Set ``f_trace_lines = True`` on all frames upon :func:`pdb.set_trace()`
+
+..
+
+.. date: 2023-10-13-06-47-20
+.. gh-issue: 110771
+.. nonce: opwdlc
+.. section: Library
+
+Expose the setup and cleanup portions of ``asyncio.run_forever()`` as the
+standalone methods ``asyncio.run_forever_setup()`` and
+``asyncio.run_forever_cleanup()``. This allows for tighter integration with
+GUI event loops.
+
+..
+
+.. date: 2023-10-12-15-16-44
+.. gh-issue: 110774
+.. nonce: AdCb5A
+.. section: Library
+
+Support setting the :class:`asyncio.Runner` loop_factory kwarg in
+:class:`unittest.IsolatedAsyncioTestCase`
+
+..
+
+.. date: 2023-10-10-17-56-41
+.. gh-issue: 110392
+.. nonce: 6g6CnP
+.. section: Library
+
+Fix :func:`tty.setraw` and :func:`tty.setcbreak`: previously they returned
+partially modified list of the original tty attributes.
+:func:`tty.cfmakeraw` and :func:`tty.cfmakecbreak` now make a copy of the
+list of special characters before modifying it.
+
+..
+
+.. date: 2023-10-09-23-59-04
+.. gh-issue: 59013
+.. nonce: qPbS-G
+.. section: Library
+
+Make line number of function breakpoint more precise in :mod:`pdb`
+
+..
+
+.. date: 2023-10-08-18-38-09
+.. gh-issue: 88434
+.. nonce: 2Q_IkG
+.. section: Library
+
+Emit deprecation warning for non-integer numbers in :mod:`gettext` functions
+and methods that consider plural forms even if the translation was not
+found.
+
+..
+
+.. date: 2023-10-08-14-17-06
+.. gh-issue: 110395
+.. nonce: _tdCsV
+.. section: Library
+
+Ensure that :func:`select.kqueue` objects correctly appear as closed in
+forked children, to prevent operations on an invalid file descriptor.
+
+..
+
+.. date: 2023-10-02-05-23-27
+.. gh-issue: 110196
+.. nonce: djwt0z
+.. section: Library
+
+Add ``__reduce__`` method to :class:`IPv6Address` in order to keep
+``scope_id``
+
+..
+
+.. date: 2023-09-25-20-05-41
+.. gh-issue: 109747
+.. nonce: _cRJH8
+.. section: Library
+
+Improve errors for unsupported look-behind patterns. Now re.error is raised
+instead of OverflowError or RuntimeError for too large width of look-behind
+pattern.
+
+..
+
+.. date: 2023-09-15-12-30-21
+.. gh-issue: 109466
+.. nonce: 6ah-aw
+.. section: Library
+
+Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which retuns the
+IPv4-mapped IPv6 address.
+
+..
+
+.. date: 2023-09-08-12-10-10
+.. gh-issue: 85098
+.. nonce: DfQbeJ
+.. section: Library
+
+Implement the CLI of the :mod:`symtable` module and improve the repr of
+:class:`~symtable.Symbol`.
+
+..
+
+.. date: 2023-09-02-16-07-23
+.. gh-issue: 108791
+.. nonce: fBcAqh
+.. section: Library
+
+Improved error handling in :mod:`pdb` command line interface, making it
+produce more concise error messages.
+
+..
+
+.. date: 2023-08-30-19-10-35
+.. gh-issue: 105931
+.. nonce: Lpwve8
+.. section: Library
+
+Change :mod:`compileall` to only strip the stripdir prefix from the full
+path recorded in the compiled ``.pyc`` file, when the prefix matches the
+start of the full path in its entirety. When the prefix does not match, no
+stripping is performed and a warning to this effect is displayed.
+
+Previously all path components of the stripdir prefix that matched the full
+path were removed, while those that did not match were left alone (including
+ones interspersed between matching components).
+
+..
+
+.. date: 2023-07-29-19-00-39
+.. gh-issue: 107431
+.. nonce: 1GzJ2p
+.. section: Library
+
+Make the ``DictProxy`` and ``ListProxy`` types in
+:mod:`multiprocessing.managers` :ref:`Generic Alias
+Types<types-genericalias>` for ``[]`` use in typing contexts.
+
+..
+
+.. date: 2023-07-13-00-24-52
+.. gh-issue: 72904
+.. nonce: Yn5-j0
+.. section: Library
+
+Add :func:`glob.translate`. This function converts a pathname with
+shell-style wildcards to a regular expression.
+
+..
+
+.. date: 2023-05-30-02-01-14
+.. gh-issue: 90026
+.. nonce: FyCXw8
+.. section: Library
+
+Define ``USE_XATTRS`` on Cygwin so that XATTR-related functions in the
+:mod:`os` module become available.
+
+..
+
+.. date: 2023-04-26-16-37-00
+.. gh-issue: 90890
+.. nonce: fIag4w
+.. section: Library
+
+New methods :meth:`mailbox.Maildir.get_info`,
+:meth:`mailbox.Maildir.set_info`, :meth:`mailbox.Maildir.get_flags`,
+:meth:`mailbox.Maildir.set_flags`, :meth:`mailbox.Maildir.add_flag`,
+:meth:`mailbox.Maildir.remove_flag`. These methods speed up accessing a
+message's info and/or flags and are useful when it is not necessary to
+access the message's contents, as when iterating over a Maildir to find
+messages with specific flags.
+
+..
+
+.. date: 2023-04-15-14-45-21
+.. gh-issue: 102956
+.. nonce: Z6qeUy
+.. section: Library
+
+Fix returning of empty byte strings after seek in zipfile module
+
+..
+
+.. date: 2023-03-22-02-01-30
+.. gh-issue: 102895
+.. nonce: HiEqaZ
+.. section: Library
+
+Added a parameter ``local_exit`` for :func:`code.interact` to prevent
+``exit()`` and ``quit`` from closing ``sys.stdin`` and raise ``SystemExit``.
+
+..
+
+.. date: 2022-10-14-21-11-10
+.. gh-issue: 97928
+.. nonce: Pdxh1G
+.. section: Library
+
+Change the behavior of :meth:`tkinter.Text.count`. It now always returns an
+integer if one or less counting options are specified. Previously it could
+return a single count as a 1-tuple, an integer (only if option ``"update"``
+was specified) or ``None`` if no items found. The result is now the same if
+``wantobjects`` is set to ``0``.
+
+..
+
+.. date: 2022-10-05-15-01-36
+.. gh-issue: 96954
+.. nonce: ezwkrU
+.. section: Library
+
+Switch the storage of the unicode codepoint names to use a different
+data-structure, a `directed acyclic word graph
+<https://en.wikipedia.org/wiki/Deterministic_acyclic_finite_state_automaton>`_.
+This makes the unicodedata shared library about 440 KiB smaller. Contributed
+by Carl Friedrich Bolz-Tereick using code from the PyPy project.
+
+..
+
+.. date: 2022-05-28-20-55-07
+.. gh-issue: 73561
+.. nonce: YRmAvy
+.. section: Library
+
+Omit the interface scope from an IPv6 address when used as Host header by
+:mod:`http.client`.
+
+..
+
+.. date: 2022-05-06-15-49-57
+.. gh-issue: 86826
+.. nonce: rf006W
+.. section: Library
+
+:mod:`zipinfo` now supports the full range of values in the TZ string
+determined by RFC 8536 and detects all invalid formats. Both Python and C
+implementations now raise exceptions of the same type on invalid data.
+
+..
+
+.. date: 2023-11-17-15-20-41
+.. gh-issue: 111808
+.. nonce: jtIayt
+.. section: Tests
+
+Make the default value of ``test.support.infinite_recursion()`` to be
+conditional based on whether optimizations were used when compiling the
+interpreter. This helps with platforms like WASI whose stack size is greatly
+restricted in debug builds.
+
+..
+
+.. date: 2023-11-03-18-59-13
+.. gh-issue: 110722
+.. nonce: jvT1pb
+.. section: Tests
+
+Gathering line coverage of standard libraries within the regression test
+suite is now precise, as well as much faster. Patch by �ukasz Langa.
+
+..
+
+.. date: 2023-10-31-22-09-25
+.. gh-issue: 110367
+.. nonce: UhQi44
+.. section: Tests
+
+Make regrtest ``--verbose3`` option compatible with ``--huntrleaks -jN``
+options. The ``./python -m test -j1 -R 3:3 --verbose3`` command now works as
+expected. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-21-19-27-36
+.. gh-issue: 111165
+.. nonce: FU6mUk
+.. section: Tests
+
+Remove no longer used functions ``run_unittest()`` and ``run_doctest()``
+from the :mod:`test.support` module.
+
+..
+
+.. date: 2023-10-21-00-10-36
+.. gh-issue: 110932
+.. nonce: jktjJU
+.. section: Tests
+
+Fix regrtest if the ``SOURCE_DATE_EPOCH`` environment variable is defined:
+use the variable value as the random seed. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-17-17-54-36
+.. gh-issue: 110995
+.. nonce: Fx8KRD
+.. section: Tests
+
+test_gdb: Fix detection of gdb built without Python scripting support. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2023-10-16-13-47-24
+.. gh-issue: 110918
+.. nonce: aFgZK3
+.. section: Tests
+
+Test case matching patterns specified by options ``--match``, ``--ignore``,
+``--matchfile`` and ``--ignorefile`` are now tested in the order of
+specification, and the last match determines whether the test case be run or
+ignored.
+
+..
+
+.. date: 2023-09-15-15-00-14
+.. gh-issue: 108747
+.. nonce: ql0owS
+.. section: Tests
+
+Add unit test for ``usercustomize`` and ``sitecustomize`` hooks from
+:class:`site`.
+
+..
+
+.. date: 2023-11-15-16-56-20
+.. gh-issue: 96954
+.. nonce: 6FYvKn
+.. section: Build
+
+Make ``make regen-unicodedata`` work for out-of-tree builds of CPython.
+
+..
+
+.. date: 2023-11-15-13-40-29
+.. gh-issue: 112088
+.. nonce: UJQxxh
+.. section: Build
+
+Add ``Tools/build/regen-configure.sh`` script to regenerate the
+``configure`` with an Ubuntu container image. The
+``quay.io/tiran/cpython_autoconf:271`` container image
+(`tiran/cpython_autoconf <https://github.com/tiran/cpython_autoconf>`_) is
+no longer used. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-20-15-29-31
+.. gh-issue: 111046
+.. nonce: 2DxQl8
+.. section: Build
+
+For wasi-threads, memory is now exported to fix compatibility issues with
+some wasm runtimes.
+
+..
+
+.. date: 2023-10-17-03-10-40
+.. gh-issue: 110828
+.. nonce: 31vQ9B
+.. section: Build
+
+AIX 32bit needs ``-latomic`` to build the :mod:`!_testcapi` extension
+module.
+
+..
+
+.. date: 2023-10-17-01-56-11
+.. gh-issue: 85283
+.. nonce: V156T2
+.. section: Build
+
+The ``errno``, ``md5``, ``resource``, ``winsound``, ``_ctypes_test``,
+``_multiprocessing.posixshmem``, ``_scproxy``, ``_stat``,
+``_testimportmultiple`` and ``_uuid`` C extensions are now built with the
+:ref:`limited C API <limited-c-api>`. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-11-13-22-35-27
+.. gh-issue: 111856
+.. nonce: vEtA5z
+.. section: Windows
+
+Fixes :func:`~os.fstat` on file systems that do not support file ID
+requests. This includes FAT32 and exFAT.
+
+..
+
+.. date: 2023-10-25-05-01-28
+.. gh-issue: 111293
+.. nonce: FSsLT6
+.. section: Windows
+
+Fix :data:`os.DirEntry.inode` dropping higher 64 bits of a file id on some
+filesystems on Windows.
+
+..
+
+.. date: 2023-10-19-21-46-18
+.. gh-issue: 110913
+.. nonce: CWlPfg
+.. section: Windows
+
+WindowsConsoleIO now correctly chunks large buffers without splitting up
+UTF-8 sequences.
+
+..
+
+.. date: 2023-10-31-22-13-05
+.. gh-issue: 59703
+.. nonce: SML6Ag
+.. section: macOS
+
+For macOS framework builds, in ``getpath.c`` use the system ``dladdr``
+function to find the path to the shared library rather than depending on
+deprecated macOS APIs.
+
+..
+
+.. date: 2023-10-18-17-26-36
+.. gh-issue: 110950
+.. nonce: sonoma
+.. section: macOS
+
+Update macOS installer to include an upstream Tcl/Tk fix for the ``Secure
+coding is not enabled for restorable state!`` warning encountered in Tkinter
+on macOS 14 Sonoma.
+
+..
+
+.. date: 2023-10-18-01-40-36
+.. gh-issue: 111015
+.. nonce: NaLI2L
+.. section: macOS
+
+Ensure that IDLE.app and Python Launcher.app are installed with appropriate
+permissions on macOS builds.
+
+..
+
+.. date: 2023-09-02-08-49-57
+.. gh-issue: 71383
+.. nonce: Ttkchg
+.. section: macOS
+
+Update macOS installer to include an upstream Tcl/Tk fix for the
+``ttk::ThemeChanged`` error encountered in Tkinter.
+
+..
+
+.. date: 2023-08-30-16-33-57
+.. gh-issue: 92603
+.. nonce: ATkKVO
+.. section: macOS
+
+Update macOS installer to include a fix accepted by upstream Tcl/Tk for a
+crash encountered after the first :meth:`tkinter.Tk` instance is destroyed.
+
+..
+
+.. bpo: 35668
+.. date: 2019-01-07-06-18-25
+.. nonce: JimxP5
+.. section: IDLE
+
+Add docstrings to the IDLE debugger module. Fix two bugs: initialize
+Idb.botframe (should be in Bdb); in Idb.in_rpc_code, check whether
+prev_frame is None before trying to use it. Greatly expand test_debugger.
+
+..
+
+.. date: 2023-11-09-13-04-29
+.. gh-issue: 111903
+.. nonce: 7Prryr
+.. section: Tools/Demos
+
+Argument Clinic now supports the ``@critical_section`` directive that
+instructs Argument Clinic to generate a critical section around the function
+call, which locks the ``self`` object in ``--disable-gil`` builds. Patch by
+Sam Gross.
+
+..
+
+.. date: 2023-11-15-18-36-21
+.. gh-issue: 112026
+.. nonce: _Yybr5
+.. section: C API
+
+Add again the private ``_PyThreadState_UncheckedGet()`` function as an alias
+to the new public :c:func:`PyThreadState_GetUnchecked` function. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-11-15-17-10-09
+.. gh-issue: 112026
+.. nonce: ts9yyn
+.. section: C API
+
+Restore the removed ``_PyDict_GetItemStringWithError()`` function. It is
+used by numpy. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-11-15-16-07-57
+.. gh-issue: 112026
+.. nonce: bnr8dd
+.. section: C API
+
+Restore removed private C API functions, macros and structures which have no
+simple replacement for now:
+
+* _PyDict_GetItem_KnownHash()
+* _PyDict_NewPresized()
+* _PyHASH_BITS
+* _PyHASH_IMAG
+* _PyHASH_INF
+* _PyHASH_MODULUS
+* _PyHASH_MULTIPLIER
+* _PyLong_Copy()
+* _PyLong_FromDigits()
+* _PyLong_New()
+* _PyLong_Sign()
+* _PyObject_CallMethodId()
+* _PyObject_CallMethodNoArgs()
+* _PyObject_CallMethodOneArg()
+* _PyObject_CallOneArg()
+* _PyObject_EXTRA_INIT
+* _PyObject_FastCallDict()
+* _PyObject_GetAttrId()
+* _PyObject_Vectorcall()
+* _PyObject_VectorcallMethod()
+* _PyStack_AsDict()
+* _PyThread_CurrentFrames()
+* _PyUnicodeWriter structure
+* _PyUnicodeWriter_Dealloc()
+* _PyUnicodeWriter_Finish()
+* _PyUnicodeWriter_Init()
+* _PyUnicodeWriter_Prepare()
+* _PyUnicodeWriter_PrepareKind()
+* _PyUnicodeWriter_WriteASCIIString()
+* _PyUnicodeWriter_WriteChar()
+* _PyUnicodeWriter_WriteLatin1String()
+* _PyUnicodeWriter_WriteStr()
+* _PyUnicodeWriter_WriteSubstring()
+* _PyUnicode_AsString()
+* _PyUnicode_FromId()
+* _PyVectorcall_Function()
+* _Py_IDENTIFIER()
+* _Py_c_abs()
+* _Py_c_diff()
+* _Py_c_neg()
+* _Py_c_pow()
+* _Py_c_prod()
+* _Py_c_quot()
+* _Py_c_sum()
+* _Py_static_string()
+* _Py_static_string_init()
+
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-11-13-17-57-11
+.. gh-issue: 112026
+.. nonce: WJLJcI
+.. section: C API
+
+Add again ``<ctype.h>`` and ``<unistd.h>`` includes in ``Python.h``, but
+don't include them in the limited C API version 3.13 and newer. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-11-10-10-24-28
+.. gh-issue: 111956
+.. nonce: ImE6Cx
+.. section: C API
+
+Add internal-only one-time initialization API: ``_PyOnceFlag`` and
+``_PyOnceFlag_CallOnce``.
+
+..
+
+.. date: 2023-11-10-10-21-38
+.. gh-issue: 111262
+.. nonce: 2utB5m
+.. section: C API
+
+Add :c:func:`PyDict_Pop` and :c:func:`PyDict_PopString` functions: remove a
+key from a dictionary and optionally return the removed value. This is
+similar to :meth:`dict.pop`, but without the default value and not raising
+:exc:`KeyError` if the key missing. Patch by Stefan Behnel and Victor
+Stinner.
+
+..
+
+.. date: 2023-11-08-20-28-03
+.. gh-issue: 111863
+.. nonce: RPeFAX
+.. section: C API
+
+Rename ``Py_NOGIL`` to ``Py_GIL_DISABLED``. Patch by Hugo van Kemenade.
+
+..
+
+.. date: 2023-11-08-18-37-19
+.. gh-issue: 111138
+.. nonce: 3Ypq8h
+.. section: C API
+
+Add :c:func:`PyList_Extend` and :c:func:`PyList_Clear` functions: similar to
+Python ``list.extend()`` and ``list.clear()`` methods. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-10-31-18-22-03
+.. gh-issue: 108765
+.. nonce: _beYv8
+.. section: C API
+
+On Windows, ``Python.h`` no longer includes the ``<stddef.h>`` standard
+header file. If needed, it should now be included explicitly. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2023-10-31-14-58-17
+.. gh-issue: 111569
+.. nonce: _V8iu4
+.. section: C API
+
+Implement "Python Critical Sections" from :pep:`703`. These are macros to
+help replace the GIL with per-object locks in the ``--disable-gil`` build of
+CPython. The macros are no-ops in the default build.
+
+..
+
+.. date: 2023-10-30-18-13-01
+.. gh-issue: 111506
+.. nonce: EUdO22
+.. section: C API
+
+In the limited C API version 3.13, :c:func:`Py_SET_REFCNT` function is now
+implemented as an opaque function call. Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-19-22-39-24
+.. gh-issue: 108082
+.. nonce: uJytvc
+.. section: C API
+
+Add :c:func:`PyErr_FormatUnraisable` function.
+
+..
+
+.. date: 2023-10-17-10-21-59
+.. gh-issue: 110964
+.. nonce: OxqEjd
+.. section: C API
+
+Move the undocumented private _PyArg functions and _PyArg_Parser structure
+to internal C API (``pycore_modsupport.h``). Patch by Victor Stinner.
+
+..
+
+.. date: 2023-10-13-14-18-06
+.. gh-issue: 110815
+.. nonce: tEFLVl
+.. section: C API
+
+Support non-ASCII keyword names in :c:func:`PyArg_ParseTupleAndKeywords`.
+
+..
+
+.. date: 2023-10-02-23-08-53
+.. gh-issue: 109587
+.. nonce: UqqnDY
+.. section: C API
+
+Introduced :c:func:`PyUnstable_PerfTrampoline_CompileCode`,
+:c:func:`PyUnstable_PerfTrampoline_SetPersistAfterFork` and
+:c:func:`PyUnstable_CopyPerfMapFile`. These functions allow extension
+modules to initialize trampolines eagerly, after the application is "warmed
+up". This makes it possible to have perf-trampolines running in an
+always-enabled fashion.
+
+..
+
+.. date: 2023-08-28-17-40-51
+.. gh-issue: 85283
+.. nonce: raFNiD
+.. section: C API
+
+Add the :c:func:`PySys_Audit` function to the limited C API. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2023-08-28-17-34-10
+.. gh-issue: 85283
+.. nonce: f1zXcc
+.. section: C API
+
+Add :c:func:`PyMem_RawMalloc`, :c:func:`PyMem_RawCalloc`,
+:c:func:`PyMem_RawRealloc` and :c:func:`PyMem_RawFree` to the limited C API.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2023-07-12-12-14-52
+.. gh-issue: 106672
+.. nonce: fkRjmi
+.. section: C API
+
+Functions :c:func:`PyDict_GetItem`, :c:func:`PyDict_GetItemString`,
+:c:func:`PyMapping_HasKey`, :c:func:`PyMapping_HasKeyString`,
+:c:func:`PyObject_HasAttr`, :c:func:`PyObject_HasAttrString`, and
+:c:func:`PySys_GetObject`, which clear all errors occurred during calling
+the function, report now them using :func:`sys.unraisablehook`.
+
+..
+
+.. date: 2023-06-08-21-12-44
+.. gh-issue: 67565
+.. nonce: UkK3x-
+.. section: C API
+
+Remove redundant C-contiguity check in :file:`getargs.c`, :mod:`binascii`,
+:mod:`ssl` and Argument Clinic. Patched by Stefan Krah and Furkan Onder
diff --git a/Misc/NEWS.d/3.5.0rc1.rst b/Misc/NEWS.d/3.5.0rc1.rst
index 1fb9bc6c04da38..64e9435b252acb 100644
--- a/Misc/NEWS.d/3.5.0rc1.rst
+++ b/Misc/NEWS.d/3.5.0rc1.rst
@@ -168,7 +168,7 @@ Sanad Zaki Rizvi.
 
 Idle editor default font. Switch from Courier to platform-sensitive
 TkFixedFont.  This should not affect current customized font selections.  If
-there is a problem, edit $HOME/.idlerc/config-main.cfg and remove 'fontxxx'
+there is a problem, edit $HOME/.idlerc/config-main.cfg and remove ':samp:`font{xxx}`'
 entries from [Editor Window].  Patch by Mark Roseman.
 
 ..
diff --git a/Misc/NEWS.d/3.5.1rc1.rst b/Misc/NEWS.d/3.5.1rc1.rst
index dc247ce2096a7d..05e1ecfaf6bc79 100644
--- a/Misc/NEWS.d/3.5.1rc1.rst
+++ b/Misc/NEWS.d/3.5.1rc1.rst
@@ -189,7 +189,7 @@ comprehensions correspond to the opening brace.
 .. nonce: 0Gh-Ty
 .. section: Core and Builtins
 
-Hide the private _Py_atomic_xxx symbols from the public Python.h header to
+Hide the private :samp:`_Py_atomic_{xxx}` symbols from the public Python.h header to
 fix a compilation error with OpenMP. PyThreadState_GET() becomes an alias to
 PyThreadState_Get() to avoid ABI incompatibilities.
 
diff --git a/Misc/NEWS.d/3.5.4.rst b/Misc/NEWS.d/3.5.4.rst
index cd0ca4872f1ab0..7839fa2709ecf2 100644
--- a/Misc/NEWS.d/3.5.4.rst
+++ b/Misc/NEWS.d/3.5.4.rst
@@ -5,4 +5,4 @@
 .. section: Library
 
 ftplib.FTP.putline() now throws ValueError on commands that contains CR or
-LF. Patch by Dong-hee Na.
+LF. Patch by Donghee Na.
diff --git a/Misc/NEWS.d/3.5.4rc1.rst b/Misc/NEWS.d/3.5.4rc1.rst
index 04a035a41e7461..d65d5d14ee78bb 100644
--- a/Misc/NEWS.d/3.5.4rc1.rst
+++ b/Misc/NEWS.d/3.5.4rc1.rst
@@ -340,7 +340,7 @@ not keep objects alive longer than expected.
 .. section: Library
 
 inspect.signature() now supports callables with variable-argument parameters
-wrapped with partialmethod. Patch by Dong-hee Na.
+wrapped with partialmethod. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.6.0a1.rst b/Misc/NEWS.d/3.6.0a1.rst
index 53f09b3dfe3363..98f1215fb91873 100644
--- a/Misc/NEWS.d/3.6.0a1.rst
+++ b/Misc/NEWS.d/3.6.0a1.rst
@@ -125,7 +125,7 @@ Setuptools 19.0.
 .. section: Core and Builtins
 
 Memory functions of the :c:func:`PyMem_Malloc` domain
-(:c:data:`PYMEM_DOMAIN_MEM`) now use the :ref:`pymalloc allocator
+(:c:macro:`PYMEM_DOMAIN_MEM`) now use the :ref:`pymalloc allocator
 <pymalloc>` rather than system :c:func:`malloc`. Applications calling
 :c:func:`PyMem_Malloc` without holding the GIL can now crash: use
 ``PYTHONMALLOC=debug`` environment variable to validate the usage of memory
diff --git a/Misc/NEWS.d/3.6.0rc1.rst b/Misc/NEWS.d/3.6.0rc1.rst
index 15769f950db239..658f8c902d8704 100644
--- a/Misc/NEWS.d/3.6.0rc1.rst
+++ b/Misc/NEWS.d/3.6.0rc1.rst
@@ -69,8 +69,8 @@ supported.
 .. nonce: ilNIWN
 .. section: Library
 
-Add new :data:`socket.TCP_CONGESTION` (Linux 2.6.13) and
-:data:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
+Add new :const:`socket.TCP_CONGESTION` (Linux 2.6.13) and
+:const:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
 Omar Sandoval.
 
 ..
diff --git a/Misc/NEWS.d/3.6.2rc1.rst b/Misc/NEWS.d/3.6.2rc1.rst
index cdf4c3d541c4ca..28eb88f79130c5 100644
--- a/Misc/NEWS.d/3.6.2rc1.rst
+++ b/Misc/NEWS.d/3.6.2rc1.rst
@@ -77,7 +77,7 @@ delivered to the innermost frame.
 .. section: Core and Builtins
 
 sys.getsizeof() on a code object now returns the sizes which includes the
-code struct and sizes of objects which it references. Patch by Dong-hee Na.
+code struct and sizes of objects which it references. Patch by Donghee Na.
 
 ..
 
@@ -163,7 +163,7 @@ no longer ignored.  Patch by Mircea Cosbuc.
 .. nonce: I2mDTz
 .. section: Library
 
-Functional API of enum allows to create empty enums. Patched by Dong-hee Na
+Functional API of enum allows to create empty enums. Patched by Donghee Na
 
 ..
 
@@ -202,7 +202,7 @@ not keep objects alive longer than expected.
 .. section: Library
 
 inspect.signature() now supports callables with variable-argument parameters
-wrapped with partialmethod. Patch by Dong-hee Na.
+wrapped with partialmethod. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.6.3rc1.rst b/Misc/NEWS.d/3.6.3rc1.rst
index 4dc2eef5d3b61b..4b2aae9dc88441 100644
--- a/Misc/NEWS.d/3.6.3rc1.rst
+++ b/Misc/NEWS.d/3.6.3rc1.rst
@@ -506,7 +506,7 @@ Fix handling of long oids in ssl.  Based on patch by Christian Heimes.
 .. section: Library
 
 ftplib.FTP.putline() now throws ValueError on commands that contains CR or
-LF. Patch by Dong-hee Na.
+LF. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.6.4rc1.rst b/Misc/NEWS.d/3.6.4rc1.rst
index dc9ab7ad56de89..ae4534be62c5c4 100644
--- a/Misc/NEWS.d/3.6.4rc1.rst
+++ b/Misc/NEWS.d/3.6.4rc1.rst
@@ -294,7 +294,7 @@ by Nir Soffer.
 .. nonce: Nj3A0x
 .. section: Library
 
-Make :meth:`msilib.SummaryInformation.GetProperty` return ``None`` when the
+Make :meth:`!msilib.SummaryInformation.GetProperty` return ``None`` when the
 value of property is ``VT_EMPTY``.  Initial patch by Mark Mc Mahon.
 
 ..
@@ -316,7 +316,7 @@ Initial patch by Robin Wellner.
 .. nonce: xWT9k0
 .. section: Library
 
-:func:`msilib.OpenDatabase` now raises a better exception message when it
+:func:`!msilib.OpenDatabase` now raises a better exception message when it
 couldn't open or create an MSI file.  Initial patch by William Tisäter.
 
 ..
diff --git a/Misc/NEWS.d/3.6.6rc1.rst b/Misc/NEWS.d/3.6.6rc1.rst
index 71a5c3ec595ba2..9624195c79043b 100644
--- a/Misc/NEWS.d/3.6.6rc1.rst
+++ b/Misc/NEWS.d/3.6.6rc1.rst
@@ -289,7 +289,7 @@ literals on pydoc. Patch by Andrés Delfino.
 .. section: Library
 
 Update error message when constructing invalid inspect.Parameters Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.7.0a1.rst b/Misc/NEWS.d/3.7.0a1.rst
index ef93454784b77f..bee424241fd712 100644
--- a/Misc/NEWS.d/3.7.0a1.rst
+++ b/Misc/NEWS.d/3.7.0a1.rst
@@ -529,7 +529,7 @@ name are now supported.
 .. section: Core and Builtins
 
 sys.getsizeof() on a code object now returns the sizes which includes the
-code struct and sizes of objects which it references. Patch by Dong-hee Na.
+code struct and sizes of objects which it references. Patch by Donghee Na.
 
 ..
 
@@ -2260,7 +2260,7 @@ Update zlib to 1.2.11.
 .. section: Library
 
 ftplib.FTP.putline() now throws ValueError on commands that contains CR or
-LF. Patch by Dong-hee Na.
+LF. Patch by Donghee Na.
 
 ..
 
@@ -2329,7 +2329,7 @@ always return bytes.
 .. nonce: I2mDTz
 .. section: Library
 
-Functional API of enum allows to create empty enums. Patched by Dong-hee Na
+Functional API of enum allows to create empty enums. Patched by Donghee Na
 
 ..
 
@@ -2612,7 +2612,7 @@ Fix handling escape characters in HZ codec.  Based on patch by Ma Lin.
 .. section: Library
 
 inspect.signature() now supports callables with variable-argument parameters
-wrapped with partialmethod. Patch by Dong-hee Na.
+wrapped with partialmethod. Patch by Donghee Na.
 
 ..
 
@@ -3274,7 +3274,7 @@ Added support for bytes paths in os.fwalk().
 .. nonce: 37jMwb
 .. section: Library
 
-Add new :data:`socket.TCP_NOTSENT_LOWAT` (Linux 3.12) constant. Patch by
+Add new :const:`socket.TCP_NOTSENT_LOWAT` (Linux 3.12) constant. Patch by
 Nathaniel J. Smith.
 
 ..
@@ -3871,8 +3871,8 @@ as an integer. Function only available on Android.
 .. nonce: ilNIWN
 .. section: Library
 
-Add new :data:`socket.TCP_CONGESTION` (Linux 2.6.13) and
-:data:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
+Add new :const:`socket.TCP_CONGESTION` (Linux 2.6.13) and
+:const:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
 Omar Sandoval.
 
 ..
diff --git a/Misc/NEWS.d/3.7.0a3.rst b/Misc/NEWS.d/3.7.0a3.rst
index 6576c1fadbff6d..a968616f55be68 100644
--- a/Misc/NEWS.d/3.7.0a3.rst
+++ b/Misc/NEWS.d/3.7.0a3.rst
@@ -350,7 +350,7 @@ the left most segment of hostname in second argument of
 .. nonce: Nj3A0x
 .. section: Library
 
-Make :meth:`msilib.SummaryInformation.GetProperty` return ``None`` when the
+Make :meth:`!msilib.SummaryInformation.GetProperty` return ``None`` when the
 value of property is ``VT_EMPTY``.  Initial patch by Mark Mc Mahon.
 
 ..
@@ -396,7 +396,7 @@ Initial patch by Robin Wellner.
 .. nonce: xWT9k0
 .. section: Library
 
-:func:`msilib.OpenDatabase` now raises a better exception message when it
+:func:`!msilib.OpenDatabase` now raises a better exception message when it
 couldn't open or create an MSI file.  Initial patch by William Tisäter.
 
 ..
@@ -539,7 +539,7 @@ optional
 .. section: Library
 
 Updates 2to3 to convert from operator.isCallable(obj) to callable(obj).
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -549,7 +549,7 @@ Patch by Dong-hee Na.
 .. section: Library
 
 inspect.signature should follow :pep:`8`, if the parameter has an annotation
-and a default value. Patch by Dong-hee Na.
+and a default value. Patch by Donghee Na.
 
 ..
 
@@ -754,8 +754,8 @@ now accepts characters as arguments.  Based on patch by Steve Fink.
 .. nonce: DYQL0g
 .. section: Library
 
-Add 3 new clock identifiers: :data:`time.CLOCK_BOOTTIME`,
-:data:`time.CLOCK_PROF` and :data:`time.CLOCK_UPTIME`.
+Add 3 new clock identifiers: :const:`time.CLOCK_BOOTTIME`,
+:const:`time.CLOCK_PROF` and :const:`time.CLOCK_UPTIME`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.7.0a4.rst b/Misc/NEWS.d/3.7.0a4.rst
index f19d1a1823584b..ebae046a7a6ba0 100644
--- a/Misc/NEWS.d/3.7.0a4.rst
+++ b/Misc/NEWS.d/3.7.0a4.rst
@@ -842,5 +842,5 @@ Moved the pygetopt.h header into internal/, since it has no public APIs.
 .. nonce: LbyQt6
 .. section: C API
 
-:c:func:`Py_SetProgramName` and :c:func:`Py_SetPythonHome` now take the
+:c:func:`!Py_SetProgramName` and :c:func:`!Py_SetPythonHome` now take the
 ``const wchar *`` arguments instead of ``wchar *``.
diff --git a/Misc/NEWS.d/3.7.0b3.rst b/Misc/NEWS.d/3.7.0b3.rst
index 547fb50f5ecfdd..c86963b7e42daf 100644
--- a/Misc/NEWS.d/3.7.0b3.rst
+++ b/Misc/NEWS.d/3.7.0b3.rst
@@ -325,8 +325,8 @@ documentation.
 .. section: Library
 
 Improved exceptions raised for invalid number of channels and sample width
-when read an audio file in modules :mod:`aifc`, :mod:`wave` and
-:mod:`sunau`.
+when read an audio file in modules :mod:`!aifc`, :mod:`wave` and
+:mod:`!sunau`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.7.0b5.rst b/Misc/NEWS.d/3.7.0b5.rst
index 20476993b9652a..fb29109869188b 100644
--- a/Misc/NEWS.d/3.7.0b5.rst
+++ b/Misc/NEWS.d/3.7.0b5.rst
@@ -418,7 +418,7 @@ trigger a ``DeprecationWarning`` and have been marked for removal in Python
 .. section: Library
 
 Update error message when constructing invalid inspect.Parameters Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.8.0a1.rst b/Misc/NEWS.d/3.8.0a1.rst
index 854458f2d1a994..2b9dbd5d63a87e 100644
--- a/Misc/NEWS.d/3.8.0a1.rst
+++ b/Misc/NEWS.d/3.8.0a1.rst
@@ -380,7 +380,7 @@ Implement :pep:`572` (assignment expressions). Patch by Emily Morehouse.
 .. nonce: voIdcp
 .. section: Core and Builtins
 
-Speed up :class:`namedtuple` attribute access by 1.6x using a C fast-path
+Speed up :func:`namedtuple` attribute access by 1.6x using a C fast-path
 for the name descriptors. Patch by Pablo Galindo.
 
 ..
@@ -1934,7 +1934,7 @@ failure.
 .. nonce: _ct_0H
 .. section: Library
 
-The :data:`time.CLOCK_UPTIME_RAW` constant is now available for macOS 10.12.
+The :const:`time.CLOCK_UPTIME_RAW` constant is now available for macOS 10.12.
 
 ..
 
@@ -1965,7 +1965,7 @@ result of an internal future if it's already done.
 .. section: Library
 
 Add a deprecated warning for the :meth:`threading.Thread.isAlive` method.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -2747,7 +2747,7 @@ smaller file). Also, change the default compression level to 6 (tradeoff).
 .. nonce: xo5LAr
 .. section: Library
 
-The :term:`2to3` :2to3fixer:`execfile` fixer now opens the file with mode
+The 2to3 ``execfile`` fixer now opens the file with mode
 ``'rb'``.  Patch by Zackery Spytz.
 
 ..
@@ -3592,7 +3592,7 @@ Python 3.5.
 .. nonce: V8Ou3K
 .. section: Library
 
-Deprecate :meth:`__getitem__` methods of
+Deprecate :meth:`~object.__getitem__` methods of
 :class:`xml.dom.pulldom.DOMEventStream`, :class:`wsgiref.util.FileWrapper`
 and :class:`fileinput.FileInput`.
 
@@ -3817,7 +3817,7 @@ user.
 .. nonce: w6g7tn
 .. section: Library
 
-The :2to3fixer:`reload` fixer now uses :func:`importlib.reload` instead of
+The ``reload`` fixer now uses :func:`importlib.reload` instead of
 deprecated :func:`!imp.reload`.
 
 ..
@@ -4974,7 +4974,7 @@ Enum members.
 .. section: Library
 
 Update error message when constructing invalid inspect.Parameters Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
@@ -5576,8 +5576,8 @@ documentation.
 .. section: Library
 
 Improved exceptions raised for invalid number of channels and sample width
-when read an audio file in modules :mod:`aifc`, :mod:`wave` and
-:mod:`sunau`.
+when read an audio file in modules :mod:`!aifc`, :mod:`wave` and
+:mod:`!sunau`.
 
 ..
 
@@ -8253,7 +8253,7 @@ Explain how IDLE's Shell displays output.
 
 Improve the doc about IDLE running user code.   The section is renamed from
 "IDLE -- console differences" is renamed "Running user code". It mostly
-covers the implications of using custom sys.stdxxx objects.
+covers the implications of using custom :samp:`sys.std{xxx}` objects.
 
 ..
 
@@ -8765,7 +8765,7 @@ for relative path to files in current directory.
 .. nonce: fmehdG
 .. section: C API
 
-The :c:func:`PyByteArray_Init` and :c:func:`PyByteArray_Fini` functions have
+The :c:func:`!PyByteArray_Init` and :c:func:`!PyByteArray_Fini` functions have
 been removed. They did nothing since Python 2.7.4 and Python 3.2.0, were
 excluded from the limited API (stable ABI), and were not documented.
 
@@ -8836,7 +8836,7 @@ Py_LIMITED_API. Patch by Arthur Neufeld.
 .. nonce: gFd85N
 .. section: C API
 
-The :c:func:`_PyObject_GC_TRACK` and :c:func:`_PyObject_GC_UNTRACK` macros
+The :c:func:`!_PyObject_GC_TRACK` and :c:func:`!_PyObject_GC_UNTRACK` macros
 have been removed from the public C API.
 
 ..
diff --git a/Misc/NEWS.d/3.8.0a4.rst b/Misc/NEWS.d/3.8.0a4.rst
index 9841195210c9e7..7e8bfa5c4364a9 100644
--- a/Misc/NEWS.d/3.8.0a4.rst
+++ b/Misc/NEWS.d/3.8.0a4.rst
@@ -92,7 +92,7 @@ the field.
 .. nonce: wejLoC
 .. section: Core and Builtins
 
-On AIX, :attr:`sys.platform` doesn't contain the major version anymore.
+On AIX, :data:`sys.platform` doesn't contain the major version anymore.
 Always return ``'aix'``, instead of ``'aix3'`` .. ``'aix7'``.  Since older
 Python versions include the version number, it is recommended to always use
 ``sys.platform.startswith('aix')``. Contributed by M. Felt.
@@ -124,7 +124,7 @@ Galindo.
 .. nonce: CjRps3
 .. section: Core and Builtins
 
-:c:func:`PyEval_AcquireLock` and :c:func:`PyEval_AcquireThread` now
+:c:func:`!PyEval_AcquireLock` and :c:func:`!PyEval_AcquireThread` now
 terminate the current thread if called while the interpreter is finalizing,
 making them consistent with :c:func:`PyEval_RestoreThread`,
 :c:func:`Py_END_ALLOW_THREADS`, and :c:func:`PyGILState_Ensure`.
@@ -955,7 +955,7 @@ Add a new :mod:`_testinternalcapi` module to test the internal C API.
 .. section: Tests
 
 Fix ``test_imap4_host_default_value()`` of ``test_imaplib``: catch also
-:data:`errno.ENETUNREACH` error.
+:const:`errno.ENETUNREACH` error.
 
 ..
 
@@ -1087,7 +1087,7 @@ on the ABI.
 Change ``PyAPI_FUNC(type)``, ``PyAPI_DATA(type)`` and ``PyMODINIT_FUNC``
 macros of ``pyport.h`` when ``Py_BUILD_CORE_MODULE`` is defined. The
 ``Py_BUILD_CORE_MODULE`` define must be now be used to build a C extension
-as a dynamic library accessing Python internals: export the PyInit_xxx()
+as a dynamic library accessing Python internals: export the :samp:`PyInit_{xxx}()`
 function in DLL exports on Windows.
 
 ..
@@ -1344,7 +1344,7 @@ Fix the argument handling in Tools/scripts/lll.py.
 .. nonce: vghb86
 .. section: C API
 
-Fix memory leak in :c:func:`Py_SetStandardStreamEncoding`: release memory if
+Fix memory leak in :c:func:`!Py_SetStandardStreamEncoding`: release memory if
 the function is called twice.
 
 ..
diff --git a/Misc/NEWS.d/3.8.0b1.rst b/Misc/NEWS.d/3.8.0b1.rst
index 5285770de13186..c5e27b04ef8e8b 100644
--- a/Misc/NEWS.d/3.8.0b1.rst
+++ b/Misc/NEWS.d/3.8.0b1.rst
@@ -509,7 +509,7 @@ Add SSLContext.num_tickets to control the number of TLSv1.3 session tickets.
 .. nonce: nobzc9
 .. section: Library
 
-Fix the error handling in :meth:`msilib.SummaryInformation.GetProperty`.
+Fix the error handling in :meth:`!msilib.SummaryInformation.GetProperty`.
 Patch by Zackery Spytz.
 
 ..
@@ -538,7 +538,7 @@ module.
 .. nonce: TQFOR4
 .. section: Library
 
-:meth:`msilib.Directory.start_component()` no longer fails if *keyfile* is
+:meth:`!msilib.Directory.start_component()` no longer fails if *keyfile* is
 not ``None``.
 
 ..
@@ -2047,6 +2047,6 @@ unbound methods. These are objects supporting the optimization given by the
 .. nonce: FR-dMP
 .. section: C API
 
-The :c:func:`PyEval_ReInitThreads` function has been removed from the C API.
+The :c:func:`!PyEval_ReInitThreads` function has been removed from the C API.
 It should not be called explicitly: use :c:func:`PyOS_AfterFork_Child`
 instead.
diff --git a/Misc/NEWS.d/3.9.0a1.rst b/Misc/NEWS.d/3.9.0a1.rst
index 0888a5c43087b5..9818c17705074b 100644
--- a/Misc/NEWS.d/3.9.0a1.rst
+++ b/Misc/NEWS.d/3.9.0a1.rst
@@ -33,7 +33,7 @@ Fixes audit event for :func:`os.system` to be named ``os.system``.
 .. section: Security
 
 Escape the server title of :class:`xmlrpc.server.DocXMLRPCServer` when
-rendering the document page as HTML. (Contributed by Dong-hee Na in
+rendering the document page as HTML. (Contributed by Donghee Na in
 :issue:`38243`.)
 
 ..
@@ -98,8 +98,8 @@ after whitespace, e.g. '127.0.0.1 whatever'.
 .. section: Security
 
 Adds audit events for :mod:`ensurepip`, :mod:`ftplib`, :mod:`glob`,
-:mod:`imaplib`, :mod:`nntplib`, :mod:`pdb`, :mod:`poplib`, :mod:`shutil`,
-:mod:`smtplib`, :mod:`sqlite3`, :mod:`subprocess`, :mod:`telnetlib`,
+:mod:`imaplib`, :mod:`!nntplib`, :mod:`pdb`, :mod:`poplib`, :mod:`shutil`,
+:mod:`smtplib`, :mod:`sqlite3`, :mod:`subprocess`, :mod:`!telnetlib`,
 :mod:`tempfile` and :mod:`webbrowser`, as well as :func:`os.listdir`,
 :func:`os.scandir` and :func:`breakpoint`.
 
@@ -203,7 +203,7 @@ arguments in decorators.
 .. section: Core and Builtins
 
 Fix a segmentation fault when using reverse iterators of empty ``dict``
-objects. Patch by Dong-hee Na and Inada Naoki.
+objects. Patch by Donghee Na and Inada Naoki.
 
 ..
 
@@ -280,7 +280,7 @@ visited by ``tp_traverse()`` are valid.
 .. section: Core and Builtins
 
 Remove unnecessary intersection and update set operation in dictview with
-empty set. (Contributed by Dong-hee Na in :issue:`38210`.)
+empty set. (Contributed by Donghee Na in :issue:`38210`.)
 
 ..
 
@@ -1164,7 +1164,7 @@ defines them with eponymous methods.
 .. nonce: bmhquU
 .. section: Library
 
-Add :data:`os.P_PIDFD` constant, which may be passed to :func:`os.waitid` to
+Add :const:`os.P_PIDFD` constant, which may be passed to :func:`os.waitid` to
 wait on a Linux process file descriptor.
 
 ..
@@ -1193,8 +1193,8 @@ Expose the Linux ``pidfd_open`` syscall as :func:`os.pidfd_open`.
 .. nonce: 7jvYFA
 .. section: Library
 
-Added constants :data:`~fcntl.F_OFD_GETLK`, :data:`~fcntl.F_OFD_SETLK` and
-:data:`~fcntl.F_OFD_SETLKW` to the :mod:`fcntl` module. Patch by Dong-hee
+Added constants :const:`~fcntl.F_OFD_GETLK`, :const:`~fcntl.F_OFD_SETLK` and
+:const:`~fcntl.F_OFD_SETLKW` to the :mod:`fcntl` module. Patch by Donghee
 Na.
 
 ..
@@ -1283,8 +1283,8 @@ Fixed erroneous equality comparison in statistics.NormalDist().
 .. nonce: 86ExWB
 .. section: Library
 
-Added :data:`~os.CLD_KILLED` and :data:`~os.CLD_STOPPED` for
-:attr:`si_code`. Patch by Dong-hee Na.
+Added :const:`~os.CLD_KILLED` and :const:`~os.CLD_STOPPED` for
+:attr:`si_code`. Patch by Donghee Na.
 
 ..
 
@@ -1355,8 +1355,8 @@ objects, patch by Samuel Colvin.
 .. nonce: 9w-IGF
 .. section: Library
 
-Add missing :data:`stat.S_IFDOOR`, :data:`stat.S_IFPORT`,
-:data:`stat.S_IFWHT`, :func:`stat.S_ISDOOR`, :func:`stat.S_ISPORT`, and
+Add missing :const:`stat.S_IFDOOR`, :const:`stat.S_IFPORT`,
+:const:`stat.S_IFWHT`, :func:`stat.S_ISDOOR`, :func:`stat.S_ISPORT`, and
 :func:`stat.S_ISWHT` values to the Python implementation of :mod:`stat`.
 
 ..
@@ -1882,7 +1882,7 @@ avoid dynamic lookup.
 .. section: Library
 
 Update :class:`importlib.machinery.BuiltinImporter` to use
-``loader._ORIGIN`` instead of a hardcoded value. Patch by Dong-hee Na.
+``loader._ORIGIN`` instead of a hardcoded value. Patch by Donghee Na.
 
 ..
 
@@ -2080,7 +2080,7 @@ method which emits a deprecation warning and calls corresponding methody
 .. section: Library
 
 Update test_statistics.py to verify that the statistics module works well
-for both C and Python implementations. Patch by Dong-hee Na
+for both C and Python implementations. Patch by Donghee Na
 
 ..
 
@@ -2201,7 +2201,7 @@ uses more than ``SIGSTKSZ`` bytes of stack memory on some platforms.
 .. nonce: AmXrik
 .. section: Library
 
-Add C fastpath for statistics.NormalDist.inv_cdf() Patch by Dong-hee Na
+Add C fastpath for statistics.NormalDist.inv_cdf() Patch by Donghee Na
 
 ..
 
@@ -2210,7 +2210,7 @@ Add C fastpath for statistics.NormalDist.inv_cdf() Patch by Dong-hee Na
 .. nonce: Ene6L-
 .. section: Library
 
-Remove the deprecated method `threading.Thread.isAlive()`. Patch by Dong-hee
+Remove the deprecated method `threading.Thread.isAlive()`. Patch by Donghee
 Na.
 
 ..
@@ -3457,7 +3457,7 @@ Patch contributed by Rémi Lapeyre.
 .. nonce: kG0ub5
 .. section: Library
 
-Fixes a bug in :mod:`cgi` module when a multipart/form-data request has no
+Fixes a bug in :mod:`!cgi` module when a multipart/form-data request has no
 `Content-Length` header.
 
 ..
@@ -4089,7 +4089,7 @@ Increase code coverage for multiprocessing.shared_memory.
 .. nonce: Kl1sti
 .. section: Tests
 
-Add tests for json.dump(..., skipkeys=True). Patch by Dong-hee Na.
+Add tests for json.dump(..., skipkeys=True). Patch by Donghee Na.
 
 ..
 
@@ -4118,7 +4118,7 @@ Add tests for ROT-13 codec.
 .. nonce: Zoe9ek
 .. section: Tests
 
-Added tests for PyDateTime_xxx_GET_xxx() macros of the C API of the
+Added tests for :samp:`PyDateTime_{xxx}_GET_{xxx}()` macros of the C API of the
 :mod:`datetime` module. Patch by Joannah Nanjekye.
 
 ..
@@ -4576,7 +4576,7 @@ distutils bdist_wininst: bdist_wininst only works on Windows.
 .. nonce: j5ebdT
 .. section: Build
 
-Many ``PyRun_XXX()`` functions like :c:func:`PyRun_String` were no longer
+Many :samp:`PyRun_{XXX}()` functions like :c:func:`PyRun_String` were no longer
 exported in ``libpython38.dll`` by mistake. Export them again to fix the ABI
 compatibility.
 
@@ -4856,7 +4856,7 @@ Patch by Srinivas Nyayapati.
 .. nonce: Akreij
 .. section: Windows
 
-Trying to import the :mod:`crypt` module on Windows will result in an
+Trying to import the :mod:`!crypt` module on Windows will result in an
 :exc:`ImportError` with a message explaining that the module isn't supported
 on Windows. On other platforms, if the underlying ``_crypt`` module is not
 available, the ImportError will include a message explaining the problem.
@@ -4983,7 +4983,7 @@ set to CP_UTF7 or CP_UTF8.
 .. nonce: -0g2O3
 .. section: Windows
 
-Make :data:`winreg.REG_MULTI_SZ` support zero-length strings.
+Make :const:`winreg.REG_MULTI_SZ` support zero-length strings.
 
 ..
 
@@ -5535,7 +5535,7 @@ Tyler Kieft.
 .. nonce: d0bhEA
 .. section: C API
 
-:c:func:`Py_SetPath` now sets :data:`sys.executable` to the program full
+:c:func:`!Py_SetPath` now sets :data:`sys.executable` to the program full
 path (:c:func:`Py_GetProgramFullPath`) rather than to the program name
 (:c:func:`Py_GetProgramName`).
 
@@ -5546,8 +5546,8 @@ path (:c:func:`Py_GetProgramFullPath`) rather than to the program name
 .. nonce: ZbquVK
 .. section: C API
 
-Python ignored arguments passed to :c:func:`Py_SetPath`,
-:c:func:`Py_SetPythonHome` and :c:func:`Py_SetProgramName`: fix Python
+Python ignored arguments passed to :c:func:`!Py_SetPath`,
+:c:func:`!Py_SetPythonHome` and :c:func:`!Py_SetProgramName`: fix Python
 initialization to use specified arguments.
 
 ..
@@ -5686,7 +5686,7 @@ positional argument.
 .. nonce: zrmgki
 .. section: C API
 
-Add :func:`PyConfig_SetWideStringList` function.
+Add :c:func:`PyConfig_SetWideStringList` function.
 
 ..
 
@@ -5706,7 +5706,7 @@ and :c:func:`_PyObject_CallMethodOneArg`.
 .. nonce: qZC0N_
 .. section: C API
 
-The :const:`METH_FASTCALL` calling convention has been documented.
+The :c:macro:`METH_FASTCALL` calling convention has been documented.
 
 ..
 
diff --git a/Misc/NEWS.d/3.9.0a3.rst b/Misc/NEWS.d/3.9.0a3.rst
index 54b61ca3b7785f..8a94848427382b 100644
--- a/Misc/NEWS.d/3.9.0a3.rst
+++ b/Misc/NEWS.d/3.9.0a3.rst
@@ -149,7 +149,7 @@ argument - by Anthony Sottile.
 .. section: Core and Builtins
 
 Correct the error message when calling the :func:`min` or :func:`max` with
-no arguments. Patch by Dong-hee Na.
+no arguments. Patch by Donghee Na.
 
 ..
 
@@ -337,7 +337,7 @@ than always signaling maximum compression.
 .. section: Library
 
 The previously deprecated ``xpath()`` and ``xgtitle()`` methods of
-:class:`nntplib.NNTP` have been removed.
+:class:`!nntplib.NNTP` have been removed.
 
 ..
 
@@ -392,7 +392,7 @@ Remove ``fractions.gcd()`` function, deprecated since Python 3.5
 .. section: Library
 
 :class:`~smtplib.LMTP` constructor now has an optional *timeout* parameter.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -414,7 +414,7 @@ Taskaya.
 
 :class:`~ftplib.FTP_TLS` and :class:`~ftplib.FTP_TLS` now raise a
 :class:`ValueError` if the given timeout for their constructor is zero to
-prevent the creation of a non-blocking socket. Patch by Dong-hee Na.
+prevent the creation of a non-blocking socket. Patch by Donghee Na.
 
 ..
 
@@ -425,7 +425,7 @@ prevent the creation of a non-blocking socket. Patch by Dong-hee Na.
 
 :class:`~smtplib.SMTP` and :class:`~smtplib.SMTP_SSL` now raise a
 :class:`ValueError` if the given timeout for their constructor is zero to
-prevent the creation of a non-blocking socket. Patch by Dong-hee Na.
+prevent the creation of a non-blocking socket. Patch by Donghee Na.
 
 ..
 
@@ -454,9 +454,9 @@ resilients to inaccessible sys.path entries (importlib_metadata v1.4.0).
 .. nonce: _S5VjC
 .. section: Library
 
-:class:`~nntplib.NNTP` and :class:`~nntplib.NNTP_SSL` now raise a
+:class:`~!nntplib.NNTP` and :class:`~!nntplib.NNTP_SSL` now raise a
 :class:`ValueError` if the given timeout for their constructor is zero to
-prevent the creation of a non-blocking socket. Patch by Dong-hee Na.
+prevent the creation of a non-blocking socket. Patch by Donghee Na.
 
 ..
 
@@ -488,7 +488,7 @@ towards *y*.
 
 :class:`~poplib.POP3` and :class:`~poplib.POP3_SSL` now raise a
 :class:`ValueError` if the given timeout for their constructor is zero to
-prevent the creation of a non-blocking socket. Patch by Dong-hee Na.
+prevent the creation of a non-blocking socket. Patch by Donghee Na.
 
 ..
 
@@ -498,7 +498,7 @@ prevent the creation of a non-blocking socket. Patch by Dong-hee Na.
 .. section: Library
 
 Updated the Gmane domain from news.gmane.org to news.gmane.io which is used
-for examples of :class:`~nntplib.NNTP` news reader server and nntplib tests.
+for examples of :class:`~!nntplib.NNTP` news reader server and nntplib tests.
 
 ..
 
@@ -571,7 +571,7 @@ new task spawning before exception raising.
 .. section: Library
 
 Correctly parenthesize filter-based statements that contain lambda
-expressions in mod:`lib2to3`. Patch by Dong-hee Na.
+expressions in mod:`!lib2to3`. Patch by Donghee Na.
 
 ..
 
@@ -699,7 +699,7 @@ upon inheritance. Patch by Bar Harel.
 :meth:`~imaplib.IMAP4.open` method now has an optional *timeout* parameter
 with this change. The overridden methods of :class:`~imaplib.IMAP4_SSL` and
 :class:`~imaplib.IMAP4_stream` were applied to this change. Patch by
-Dong-hee Na.
+Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.9.0a4.rst b/Misc/NEWS.d/3.9.0a4.rst
index 019b34c4082d10..e59435b5509acf 100644
--- a/Misc/NEWS.d/3.9.0a4.rst
+++ b/Misc/NEWS.d/3.9.0a4.rst
@@ -43,7 +43,7 @@ first item. Patch by Yonatan Goldschmidt.
 .. nonce: BIIX2M
 .. section: Core and Builtins
 
-Update clinic tool to use :c:func:`Py_IS_TYPE`. Patch by Dong-hee Na.
+Update clinic tool to use :c:func:`Py_IS_TYPE`. Patch by Donghee Na.
 
 ..
 
@@ -141,7 +141,7 @@ collection of deleted, pickled objects.
 .. section: Core and Builtins
 
 Fixed a possible crash in :meth:`list.__contains__` when a list is changed
-during comparing items. Patch by Dong-hee Na.
+during comparing items. Patch by Donghee Na.
 
 ..
 
@@ -152,7 +152,7 @@ during comparing items. Patch by Dong-hee Na.
 
 :term:`floor division` of float operation now has a better performance. Also
 the message of :exc:`ZeroDivisionError` for this operation is updated. Patch
-by Dong-hee Na.
+by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/3.9.0a5.rst b/Misc/NEWS.d/3.9.0a5.rst
index 25342d21d8f0b1..6ff05788214723 100644
--- a/Misc/NEWS.d/3.9.0a5.rst
+++ b/Misc/NEWS.d/3.9.0a5.rst
@@ -96,7 +96,7 @@ Port itertools module to multiphase initialization (:pep:`489`).
 .. section: Core and Builtins
 
 Speed up calls to ``frozenset()`` by using the :pep:`590` ``vectorcall``
-calling convention. Patch by Dong-hee Na.
+calling convention. Patch by Donghee Na.
 
 ..
 
@@ -117,7 +117,7 @@ own variable.
 .. section: Core and Builtins
 
 Speed up calls to ``set()`` by using the :pep:`590` ``vectorcall`` calling
-convention. Patch by Dong-hee Na.
+convention. Patch by Donghee Na.
 
 ..
 
@@ -166,7 +166,7 @@ Allow executing asynchronous comprehensions on the top level when the
 .. section: Core and Builtins
 
 Speed up calls to ``tuple()`` by using the :pep:`590` ``vectorcall`` calling
-convention. Patch by Dong-hee Na.
+convention. Patch by Donghee Na.
 
 ..
 
@@ -571,7 +571,7 @@ Fixed :func:`ast.unparse` for extended slices containing a single element
 .. nonce: yWq9NJ
 .. section: Library
 
-Fix :mod:`json.tool` to catch :exc:`BrokenPipeError`. Patch by Dong-hee Na.
+Fix :mod:`json.tool` to catch :exc:`BrokenPipeError`. Patch by Donghee Na.
 
 ..
 
@@ -582,7 +582,7 @@ Fix :mod:`json.tool` to catch :exc:`BrokenPipeError`. Patch by Dong-hee Na.
 
 Avoid a possible *"RuntimeError: dictionary changed size during iteration"*
 from :func:`inspect.getmodule` when it tried to loop through
-:attr:`sys.modules`.
+:data:`sys.modules`.
 
 ..
 
@@ -783,7 +783,7 @@ when the optional ``qop`` parameter is not present.
 .. section: Library
 
 HTTP status codes ``103 EARLY_HINTS`` and ``425 TOO_EARLY`` are added to
-:class:`http.HTTPStatus`. Patch by Dong-hee Na.
+:class:`http.HTTPStatus`. Patch by Donghee Na.
 
 ..
 
@@ -989,7 +989,7 @@ modules are built.
 
 Add ``--with-platlibdir`` option to the configure script: name of the
 platform-specific library directory, stored in the new
-:attr:`sys.platlibdir` attribute. It is used to build the path of
+:data:`sys.platlibdir` attribute. It is used to build the path of
 platform-specific extension modules and the path of the standard library. It
 is equal to ``"lib"`` on most platforms. On Fedora and SuSE, it is equal to
 ``"lib64"`` on 64-bit platforms. Patch by Jan Matějek, Matěj Cepl,
@@ -1133,7 +1133,7 @@ module. Patch by José Roberto Meza Cabrera.
 .. section: C API
 
 Add :c:func:`PyModule_AddType` helper function: add a type to a module.
-Patch by Dong-hee Na.
+Patch by Donghee Na.
 
 ..
 
@@ -1163,7 +1163,7 @@ Python thread state.
 .. nonce: R3jaTy
 .. section: C API
 
-Add _PyArg_NoKwnames helper function. Patch by Dong-hee Na.
+Add _PyArg_NoKwnames helper function. Patch by Donghee Na.
 
 ..
 
@@ -1234,8 +1234,8 @@ method name in the SystemError "bad call flags" error message to ease debug.
 .. nonce: GOYtIm
 .. section: C API
 
-Deprecated :c:func:`PyEval_InitThreads` and
-:c:func:`PyEval_ThreadsInitialized`. Calling :c:func:`PyEval_InitThreads`
+Deprecated :c:func:`!PyEval_InitThreads` and
+:c:func:`!PyEval_ThreadsInitialized`. Calling :c:func:`!PyEval_InitThreads`
 now does nothing.
 
 ..
diff --git a/Misc/NEWS.d/3.9.0a6.rst b/Misc/NEWS.d/3.9.0a6.rst
index af2cc7c3e97889..519c7f833ebcb8 100644
--- a/Misc/NEWS.d/3.9.0a6.rst
+++ b/Misc/NEWS.d/3.9.0a6.rst
@@ -343,7 +343,7 @@ https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242274
 .. nonce: Er8sv-
 .. section: Library
 
-The :mod:`lib2to3` module is pending deprecation due to :pep:`617`.
+The :mod:`!lib2to3` module is pending deprecation due to :pep:`617`.
 
 ..
 
@@ -680,7 +680,7 @@ child process, reset the lock to the unlocked state. Rename also the private
 .. nonce: kIjVge
 .. section: Library
 
-Expose :data:`~socket.CAN_RAW_JOIN_FILTERS` in the :mod:`socket` module.
+Expose :const:`~socket.CAN_RAW_JOIN_FILTERS` in the :mod:`socket` module.
 
 ..
 
@@ -735,7 +735,7 @@ number of groups. For other implementations, double the group list size.
 .. nonce: HFpHZS
 .. section: Library
 
-Add :data:`time.CLOCK_TAI` constant if the operating system support it.
+Add :const:`time.CLOCK_TAI` constant if the operating system support it.
 
 ..
 
diff --git a/Misc/NEWS.d/3.9.0b1.rst b/Misc/NEWS.d/3.9.0b1.rst
index a7f52f81a5cd3a..ee87315ad334e9 100644
--- a/Misc/NEWS.d/3.9.0b1.rst
+++ b/Misc/NEWS.d/3.9.0b1.rst
@@ -489,8 +489,8 @@ The first argument of :func:`pickle.loads` is now positional-only.
 .. nonce: Cuwu_H
 .. section: Library
 
-Update :mod:`nntplib` to merge :class:`nntplib.NNTP` and
-:class:`nntplib._NNTPBase`. Patch by Dong-hee Na.
+Update :mod:`!nntplib` to merge :class:`!nntplib.NNTP` and
+:class:`!nntplib._NNTPBase`. Patch by Donghee Na.
 
 ..
 
@@ -500,7 +500,7 @@ Update :mod:`nntplib` to merge :class:`nntplib.NNTP` and
 .. section: Library
 
 Update :mod:`dbm.gnu` to use gdbm_count if possible when calling
-:func:`len`. Patch by Dong-hee Na.
+:func:`len`. Patch by Donghee Na.
 
 ..
 
@@ -592,7 +592,7 @@ subdirectories in package data, matching backport in importlib_resources
 .. nonce: 5GuK2A
 .. section: Library
 
-:meth:`imaplib.IMAP4.unselect` is added. Patch by Dong-hee Na.
+:meth:`imaplib.IMAP4.unselect` is added. Patch by Donghee Na.
 
 ..
 
diff --git a/Misc/NEWS.d/next/Build/2022-06-20-15-15-11.gh-issue-90656.kFBbKe.rst b/Misc/NEWS.d/next/Build/2022-06-20-15-15-11.gh-issue-90656.kFBbKe.rst
deleted file mode 100644
index dfe71a5552070d..00000000000000
--- a/Misc/NEWS.d/next/Build/2022-06-20-15-15-11.gh-issue-90656.kFBbKe.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-Add platform triplets for 64-bit LoongArch:
-
-* loongarch64-linux-gnusf
-* loongarch64-linux-gnuf32
-* loongarch64-linux-gnu
-
-Patch by Zhang Na.
diff --git a/Misc/NEWS.d/next/Build/2022-12-18-07-24-44.gh-issue-100220.BgSV7C.rst b/Misc/NEWS.d/next/Build/2022-12-18-07-24-44.gh-issue-100220.BgSV7C.rst
deleted file mode 100644
index 7135317cd06fa2..00000000000000
--- a/Misc/NEWS.d/next/Build/2022-12-18-07-24-44.gh-issue-100220.BgSV7C.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Changed the default value of the ``SHELL`` Makefile variable from ``/bin/sh``
-to ``/bin/sh -e`` to ensure that complex recipes correctly fail after an error.
-Previously, ``make install`` could fail to install some files and yet return
-a successful result.
diff --git a/Misc/NEWS.d/next/Build/2023-02-11-05-31-05.gh-issue-99069.X4LDvY.rst b/Misc/NEWS.d/next/Build/2023-02-11-05-31-05.gh-issue-99069.X4LDvY.rst
deleted file mode 100644
index ae9b4d59ca8cec..00000000000000
--- a/Misc/NEWS.d/next/Build/2023-02-11-05-31-05.gh-issue-99069.X4LDvY.rst
+++ /dev/null
@@ -1 +0,0 @@
-Extended workaround defining ``static_assert`` when missing from the libc headers to all clang and gcc builds. In particular, this fixes building on macOS <= 10.10.
diff --git a/Misc/NEWS.d/next/Build/2023-04-14-10-24-37.gh-issue-103532.H1djkd.rst b/Misc/NEWS.d/next/Build/2023-04-14-10-24-37.gh-issue-103532.H1djkd.rst
deleted file mode 100644
index 255c9833282c2f..00000000000000
--- a/Misc/NEWS.d/next/Build/2023-04-14-10-24-37.gh-issue-103532.H1djkd.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-The ``TKINTER_PROTECT_LOADTK`` macro is no longer defined or used in the
-``_tkinter`` module.  It was previously only defined when building against
-Tk 8.4.13 and older, but Tk older than 8.5.12 has been unsupported since
-gh-issue-91152.
diff --git a/Misc/NEWS.d/next/Build/2023-05-04-10-56-14.gh-issue-104106.-W9BJS.rst b/Misc/NEWS.d/next/Build/2023-05-04-10-56-14.gh-issue-104106.-W9BJS.rst
deleted file mode 100644
index 900e5bd61d6033..00000000000000
--- a/Misc/NEWS.d/next/Build/2023-05-04-10-56-14.gh-issue-104106.-W9BJS.rst
+++ /dev/null
@@ -1 +0,0 @@
-Add gcc fallback of mkfifoat/mknodat for macOS. Patch by Dong-hee Na.
diff --git a/Misc/NEWS.d/next/Build/2023-05-14-19-00-19.gh-issue-104490.1tA4AF.rst b/Misc/NEWS.d/next/Build/2023-05-14-19-00-19.gh-issue-104490.1tA4AF.rst
deleted file mode 100644
index 1315b5cb3c1969..00000000000000
--- a/Misc/NEWS.d/next/Build/2023-05-14-19-00-19.gh-issue-104490.1tA4AF.rst
+++ /dev/null
@@ -1 +0,0 @@
-Define ``.PHONY`` / virtual make targets consistently and properly.
diff --git a/Misc/NEWS.d/next/Build/2023-05-15-09-34-08.gh-issue-99017.nToOQu.rst b/Misc/NEWS.d/next/Build/2023-05-15-09-34-08.gh-issue-99017.nToOQu.rst
deleted file mode 100644
index a3517ac0204b1d..00000000000000
--- a/Misc/NEWS.d/next/Build/2023-05-15-09-34-08.gh-issue-99017.nToOQu.rst
+++ /dev/null
@@ -1 +0,0 @@
-``PYTHON_FOR_REGEN`` now require Python 3.10 or newer.
diff --git a/Misc/NEWS.d/next/Build/2023-11-27-13-55-47.gh-issue-103065.o72OiA.rst b/Misc/NEWS.d/next/Build/2023-11-27-13-55-47.gh-issue-103065.o72OiA.rst
new file mode 100644
index 00000000000000..e2240b7c656a2f
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2023-11-27-13-55-47.gh-issue-103065.o72OiA.rst
@@ -0,0 +1 @@
+Introduce ``Tools/wasm/wasi.py`` to simplify doing a WASI build.
diff --git a/Misc/NEWS.d/next/C API/2022-09-15-15-21-34.gh-issue-96803.ynBKIS.rst b/Misc/NEWS.d/next/C API/2022-09-15-15-21-34.gh-issue-96803.ynBKIS.rst
deleted file mode 100644
index 6fc56d2249f581..00000000000000
--- a/Misc/NEWS.d/next/C API/2022-09-15-15-21-34.gh-issue-96803.ynBKIS.rst	
+++ /dev/null
@@ -1,6 +0,0 @@
-Add unstable C-API functions to get the code object, lasti and line number from
-the internal ``_PyInterpreterFrame`` in the limited API. The functions are:
-
-* ``PyCodeObject * PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame)``
-* ``int PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame)``
-* ``int PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame)``
diff --git a/Misc/NEWS.d/next/C API/2023-02-09-23-09-29.gh-issue-101408._paFIF.rst b/Misc/NEWS.d/next/C API/2023-02-09-23-09-29.gh-issue-101408._paFIF.rst
deleted file mode 100644
index 172d66163d42e6..00000000000000
--- a/Misc/NEWS.d/next/C API/2023-02-09-23-09-29.gh-issue-101408._paFIF.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-:c:func:`PyObject_GC_Resize` should calculate preheader size if needed.
-Patch by Dong-hee Na.
diff --git a/Misc/NEWS.d/next/C API/2023-03-28-12-31-51.gh-issue-103091.CzZyaZ.rst b/Misc/NEWS.d/next/C API/2023-03-28-12-31-51.gh-issue-103091.CzZyaZ.rst
deleted file mode 100644
index 28c77b6816af87..00000000000000
--- a/Misc/NEWS.d/next/C API/2023-03-28-12-31-51.gh-issue-103091.CzZyaZ.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Add a new C-API function to eagerly assign a version tag to a PyTypeObject: ``PyUnstable_Type_AssignVersionTag()``.
diff --git a/Misc/NEWS.d/next/C API/2023-04-13-16-54-00.gh-issue-103509.A26Qu8.rst b/Misc/NEWS.d/next/C API/2023-04-13-16-54-00.gh-issue-103509.A26Qu8.rst
deleted file mode 100644
index af630c3aafa940..00000000000000
--- a/Misc/NEWS.d/next/C API/2023-04-13-16-54-00.gh-issue-103509.A26Qu8.rst	
+++ /dev/null
@@ -1,5 +0,0 @@
-Added C API for extending types whose instance memory layout is opaque:
-:c:member:`PyType_Spec.basicsize` can now be zero or negative,
-:c:func:`PyObject_GetTypeData` can be used to get subclass-specific data,
-and :c:macro:`Py_TPFLAGS_ITEMS_AT_END` can be used to safely extend
-variable-size objects. See :pep:`697` for details.
diff --git a/Misc/NEWS.d/next/C API/2023-04-24-10-31-59.gh-issue-103743.2xYA1K.rst b/Misc/NEWS.d/next/C API/2023-04-24-10-31-59.gh-issue-103743.2xYA1K.rst
deleted file mode 100644
index d074350ed3ebbe..00000000000000
--- a/Misc/NEWS.d/next/C API/2023-04-24-10-31-59.gh-issue-103743.2xYA1K.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Add :c:func:`PyUnstable_Object_GC_NewWithExtraData` function that can be used to
-allocate additional memory after an object for data not managed by Python.
diff --git a/Misc/NEWS.d/next/C API/2023-04-28-18-04-38.gh-issue-103968.EnVvOx.rst b/Misc/NEWS.d/next/C API/2023-04-28-18-04-38.gh-issue-103968.EnVvOx.rst
deleted file mode 100644
index 5e4270f82afd84..00000000000000
--- a/Misc/NEWS.d/next/C API/2023-04-28-18-04-38.gh-issue-103968.EnVvOx.rst	
+++ /dev/null
@@ -1,4 +0,0 @@
-:c:func:`PyType_FromSpec` and its variants now allow creating classes whose
-metaclass overrides :c:member:`~PyTypeObject.tp_new`. The ``tp_new`` is
-ignored. This behavior is deprecated and will be disallowed in 3.14+. The
-new :c:func:`PyType_FromMetaclass` already disallows it.
diff --git a/Misc/NEWS.d/next/C API/2023-05-02-21-05-54.gh-issue-104109.0tnDZV.rst b/Misc/NEWS.d/next/C API/2023-05-02-21-05-54.gh-issue-104109.0tnDZV.rst
deleted file mode 100644
index 2ffc0fa81c014a..00000000000000
--- a/Misc/NEWS.d/next/C API/2023-05-02-21-05-54.gh-issue-104109.0tnDZV.rst	
+++ /dev/null
@@ -1,5 +0,0 @@
-We've added ``Py_NewInterpreterFromConfig()`` and ``PyInterpreterConfig`` to
-the public C-API (but not the stable ABI; not yet at least).  The new
-function may be used to create a new interpreter with various features
-configured.  The function was added to support PEP 684 (per-interpreter
-GIL).
diff --git a/Misc/NEWS.d/next/C API/2023-06-21-11-53-09.gh-issue-65210.PhFRBJ.rst b/Misc/NEWS.d/next/C API/2023-06-21-11-53-09.gh-issue-65210.PhFRBJ.rst
new file mode 100644
index 00000000000000..a15646f4dad127
--- /dev/null
+++ b/Misc/NEWS.d/next/C API/2023-06-21-11-53-09.gh-issue-65210.PhFRBJ.rst	
@@ -0,0 +1,3 @@
+Change the declaration of the *keywords* parameter of
+:c:func:`PyArg_ParseTupleAndKeywords` and
+:c:func:`PyArg_VaParseTupleAndKeywords` for better compatibility with C++.
diff --git a/Misc/NEWS.d/next/C API/2023-11-15-01-26-59.gh-issue-111545.iAoFtA.rst b/Misc/NEWS.d/next/C API/2023-11-15-01-26-59.gh-issue-111545.iAoFtA.rst
new file mode 100644
index 00000000000000..7bde2498acf999
--- /dev/null
+++ b/Misc/NEWS.d/next/C API/2023-11-15-01-26-59.gh-issue-111545.iAoFtA.rst	
@@ -0,0 +1,2 @@
+Add :c:func:`Py_HashPointer` function to hash a pointer. Patch by Victor
+Stinner.
diff --git a/Misc/NEWS.d/next/C API/2023-11-27-09-44-16.gh-issue-112438.GdNZiI.rst b/Misc/NEWS.d/next/C API/2023-11-27-09-44-16.gh-issue-112438.GdNZiI.rst
new file mode 100644
index 00000000000000..113119efd6aebb
--- /dev/null
+++ b/Misc/NEWS.d/next/C API/2023-11-27-09-44-16.gh-issue-112438.GdNZiI.rst	
@@ -0,0 +1,2 @@
+Fix support of format units "es", "et", "es#", and "et#" in nested tuples in
+:c:func:`PyArg_ParseTuple`-like functions.
diff --git a/Misc/NEWS.d/next/C API/2023-12-02-02-08-11.gh-issue-106560.THvuji.rst b/Misc/NEWS.d/next/C API/2023-12-02-02-08-11.gh-issue-106560.THvuji.rst
new file mode 100644
index 00000000000000..59b461ec47ad64
--- /dev/null
+++ b/Misc/NEWS.d/next/C API/2023-12-02-02-08-11.gh-issue-106560.THvuji.rst	
@@ -0,0 +1,2 @@
+Fix redundant declarations in the public C API. Declare PyBool_Type,
+PyLong_Type and PySys_Audit() only once. Patch by Victor Stinner.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2018-08-13-13-25-15.bpo-34392.9kIlMF.rst b/Misc/NEWS.d/next/Core and Builtins/2018-08-13-13-25-15.bpo-34392.9kIlMF.rst
new file mode 100644
index 00000000000000..bc4fd1ad1f5c7c
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2018-08-13-13-25-15.bpo-34392.9kIlMF.rst	
@@ -0,0 +1 @@
+Added :func:`sys._is_interned`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2019-12-01-12-58-31.bpo-31821.1FNmwk.rst b/Misc/NEWS.d/next/Core and Builtins/2019-12-01-12-58-31.bpo-31821.1FNmwk.rst
deleted file mode 100644
index 13c054fdd68276..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2019-12-01-12-58-31.bpo-31821.1FNmwk.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Fix :func:`!pause_reading` to work when called from :func:`!connection_made` in :mod:`asyncio`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-02-11-15-54-40.bpo-39610.fvgsCl.rst b/Misc/NEWS.d/next/Core and Builtins/2020-02-11-15-54-40.bpo-39610.fvgsCl.rst
deleted file mode 100644
index d65e0f3db9d6f5..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-02-11-15-54-40.bpo-39610.fvgsCl.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-``len()`` for 0-dimensional :class:`memoryview`` objects (such as ``memoryview(ctypes.c_uint8(42))``) now raises a :exc:`TypeError`.
-Previously this returned ``1``, which was not consistent with ``mem_0d[0]`` raising an :exc:`IndexError``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-10-06-23-32-11.gh-issue-98003.xWE0Yu.rst b/Misc/NEWS.d/next/Core and Builtins/2022-10-06-23-32-11.gh-issue-98003.xWE0Yu.rst
deleted file mode 100644
index f9e71bc1344bb3..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2022-10-06-23-32-11.gh-issue-98003.xWE0Yu.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Complex function calls are now faster and consume no C stack
-space.
-
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-11-08-12-36-25.gh-issue-99184.KIaqzz.rst b/Misc/NEWS.d/next/Core and Builtins/2022-11-08-12-36-25.gh-issue-99184.KIaqzz.rst
deleted file mode 100644
index 80076831badfea..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2022-11-08-12-36-25.gh-issue-99184.KIaqzz.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Bypass instance attribute access of ``__name__`` in ``repr`` of
-:class:`weakref.ref`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-01-30-15-40-29.gh-issue-97933.nUlp3r.rst b/Misc/NEWS.d/next/Core and Builtins/2023-01-30-15-40-29.gh-issue-97933.nUlp3r.rst
deleted file mode 100644
index 2eec05cb3ace5c..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-01-30-15-40-29.gh-issue-97933.nUlp3r.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-:pep:`709`: inline list, dict and set comprehensions to improve performance
-and reduce bytecode size.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-03-07-17-37-00.gh-issue-102500.RUSQhz.rst b/Misc/NEWS.d/next/Core and Builtins/2023-03-07-17-37-00.gh-issue-102500.RUSQhz.rst
deleted file mode 100644
index e03113ba05cd7d..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-03-07-17-37-00.gh-issue-102500.RUSQhz.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Make the buffer protocol accessible in Python code using the new
-``__buffer__`` and ``__release_buffer__`` magic methods. See :pep:`688` for
-details. Patch by Jelle Zijlstra.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-03-25-23-24-38.gh-issue-88691.2SWBd1.rst b/Misc/NEWS.d/next/Core and Builtins/2023-03-25-23-24-38.gh-issue-88691.2SWBd1.rst
deleted file mode 100644
index 761d45b0a3a84f..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-03-25-23-24-38.gh-issue-88691.2SWBd1.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Reduce the number of inline :opcode:`CACHE` entries for :opcode:`CALL`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-03-31-17-24-03.gh-issue-103082.isRUcV.rst b/Misc/NEWS.d/next/Core and Builtins/2023-03-31-17-24-03.gh-issue-103082.isRUcV.rst
deleted file mode 100644
index 631ef4c7890450..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-03-31-17-24-03.gh-issue-103082.isRUcV.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Implement :pep:`669` Low Impact Monitoring for CPython.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-01-00-46-31.gh-issue-102700.493NB4.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-01-00-46-31.gh-issue-102700.493NB4.rst
deleted file mode 100644
index 46951486e4f9c9..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-01-00-46-31.gh-issue-102700.493NB4.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Allow built-in modules to be submodules. This allows submodules to be statically linked into a CPython binary.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-02-22-14-57.gh-issue-84436.hvMgwF.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-02-22-14-57.gh-issue-84436.hvMgwF.rst
deleted file mode 100644
index c4d8ce75b35a30..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-02-22-14-57.gh-issue-84436.hvMgwF.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-The implementation of PEP-683 which adds Immortal Objects by using a fixed
-reference count that skips reference counting to make objects truly
-immutable.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-07-12-18-41.gh-issue-103323.9802br.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-07-12-18-41.gh-issue-103323.9802br.rst
deleted file mode 100644
index 347c91d973e5ce..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-07-12-18-41.gh-issue-103323.9802br.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-We've replaced our use of ``_PyRuntime.tstate_current`` with a thread-local
-variable.  This is a fairly low-level implementation detail, and there
-should be no change in behavior.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-08-17-13-07.gh-issue-103242.ysI1b3.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-08-17-13-07.gh-issue-103242.ysI1b3.rst
deleted file mode 100644
index 38b107f3be174f..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-08-17-13-07.gh-issue-103242.ysI1b3.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Migrate :meth:`~ssl.SSLContext.set_ecdh_curve` method not to use deprecated
-OpenSSL APIs. Patch by Dong-hee Na.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-09-04-30-02.gh-issue-103333.gKOetS.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-09-04-30-02.gh-issue-103333.gKOetS.rst
deleted file mode 100644
index 793f02c2afdcff..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-09-04-30-02.gh-issue-103333.gKOetS.rst	
+++ /dev/null
@@ -1 +0,0 @@
-:exc:`AttributeError` now retains the ``name`` attribute when pickled and unpickled.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-09-22-21-57.gh-issue-77757._Ow-u2.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-09-22-21-57.gh-issue-77757._Ow-u2.rst
deleted file mode 100644
index 85c8ecf7de8d1b..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-09-22-21-57.gh-issue-77757._Ow-u2.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Exceptions raised in a typeobject's ``__set_name__`` method are no longer
-wrapped by a :exc:`RuntimeError`. Context information is added to the
-exception as a :pep:`678` note.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-12-19-55-24.gh-issue-82012.FlcJAh.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-12-19-55-24.gh-issue-82012.FlcJAh.rst
deleted file mode 100644
index 819a2359bf6fae..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-12-19-55-24.gh-issue-82012.FlcJAh.rst	
+++ /dev/null
@@ -1,5 +0,0 @@
-The bitwise inversion operator (``~``) on bool is deprecated.
-It returns the bitwise inversion of the underlying ``int`` representation such that
-``bool(~True) == True``, which can be confusing. Use ``not`` for logical negation
-of bools. In the rare case that you really need the bitwise inversion of the underlying ``int``,
-convert to int explicitly ``~int(x)``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-12-20-18-51.gh-issue-103488.vYvlHD.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-12-20-18-51.gh-issue-103488.vYvlHD.rst
deleted file mode 100644
index e7daa104e57105..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-12-20-18-51.gh-issue-103488.vYvlHD.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Change the internal offset distinguishing yield and return target addresses,
-so that the instruction pointer is correct for exception handling and other
-stack unwinding.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-12-20-22-03.gh-issue-87729.99A7UO.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-12-20-22-03.gh-issue-87729.99A7UO.rst
deleted file mode 100644
index 9d75de1565a170..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-12-20-22-03.gh-issue-87729.99A7UO.rst	
+++ /dev/null
@@ -1,4 +0,0 @@
-Add :opcode:`LOAD_SUPER_ATTR` (and a specialization for ``super().method()``) to
-speed up ``super().method()`` and ``super().attr``. This makes
-``super().method()`` roughly 2.3x faster and brings it within 20% of the
-performance of a simple method call. Patch by Vladimir Matveev and Carl Meyer.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-13-00-58-55.gh-issue-103492.P4k0Ay.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-13-00-58-55.gh-issue-103492.P4k0Ay.rst
deleted file mode 100644
index 929650968173e7..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-13-00-58-55.gh-issue-103492.P4k0Ay.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Clarify :exc:`SyntaxWarning` with literal ``is`` comparison by specifying which literal is problematic, since comparisons using ``is`` with e.g. None and bool literals are idiomatic.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-14-22-35-23.gh-issue-101517.5EqM-S.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-14-22-35-23.gh-issue-101517.5EqM-S.rst
deleted file mode 100644
index 730c6cd40d7235..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-14-22-35-23.gh-issue-101517.5EqM-S.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Fix bug in line numbers of instructions emitted for :keyword:`except* <except_star>`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-16-14-38-39.gh-issue-100530.OR6-sn.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-16-14-38-39.gh-issue-100530.OR6-sn.rst
deleted file mode 100644
index 5b1bcc4a680fc3..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-16-14-38-39.gh-issue-100530.OR6-sn.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Clarify the error message raised when the called part of a class pattern isn't actually a class.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-17-16-00-32.gh-issue-102856.UunJ7y.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-17-16-00-32.gh-issue-102856.UunJ7y.rst
deleted file mode 100644
index 35eceb83816bcb..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-17-16-00-32.gh-issue-102856.UunJ7y.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Implement the required C tokenizer changes for PEP 701. Patch by Pablo Galindo Salgado, Lysandros Nikolaou, Batuhan Taskaya, Marta Gómez Macías and sunmy2019.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-20-16-17-51.gh-issue-103650.K1MFXR.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-20-16-17-51.gh-issue-103650.K1MFXR.rst
deleted file mode 100644
index 5434660e9d6ffb..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-20-16-17-51.gh-issue-103650.K1MFXR.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Change the perf map format to remove the '0x' prefix from the addresses
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-21-16-12-41.gh-issue-103590.7DHDOE.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-21-16-12-41.gh-issue-103590.7DHDOE.rst
deleted file mode 100644
index af733a8207a2c1..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-21-16-12-41.gh-issue-103590.7DHDOE.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Do not wrap a single exception raised from a ``try-except*`` construct in an :exc:`ExceptionGroup`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-21-17-03-14.gh-issue-102310.anLjDx.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-21-17-03-14.gh-issue-102310.anLjDx.rst
deleted file mode 100644
index 15cb6c64adbab1..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-21-17-03-14.gh-issue-102310.anLjDx.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Change the error range for invalid bytes literals.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-24-14-38-16.gh-issue-103793.kqoH6Q.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-24-14-38-16.gh-issue-103793.kqoH6Q.rst
deleted file mode 100644
index c48348798e7142..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-24-14-38-16.gh-issue-103793.kqoH6Q.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Optimized asyncio Task creation by deferring expensive string formatting
-(task name generation) from Task creation to the first time ``get_name`` is
-called. This makes asyncio benchmarks up to 5% faster.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-24-21-47-38.gh-issue-103801.WaBanq.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-24-21-47-38.gh-issue-103801.WaBanq.rst
deleted file mode 100644
index 6f07d72fafdfc3..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-24-21-47-38.gh-issue-103801.WaBanq.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Adds three minor linting fixes to the wasm module caught that were caught by ruff.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-25-20-56-01.gh-issue-103845.V7NYFn.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-25-20-56-01.gh-issue-103845.V7NYFn.rst
deleted file mode 100644
index e8434854cde632..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-25-20-56-01.gh-issue-103845.V7NYFn.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Remove both line and instruction instrumentation before adding new ones for monitoring, to avoid newly added instrumentation being removed immediately.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-26-15-14-23.gh-issue-103899.1pqKPF.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-26-15-14-23.gh-issue-103899.1pqKPF.rst
deleted file mode 100644
index c12a6b9cb841f2..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-26-15-14-23.gh-issue-103899.1pqKPF.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Provide a helpful hint in the :exc:`TypeError` message when accidentally
-calling a :term:`module` object that has a callable attribute of the same
-name (such as :func:`dis.dis` or :class:`datetime.datetime`).
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-04-26-17-56-18.gh-issue-103895.ESB6tn.rst b/Misc/NEWS.d/next/Core and Builtins/2023-04-26-17-56-18.gh-issue-103895.ESB6tn.rst
deleted file mode 100644
index 6fed304c9132b3..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-04-26-17-56-18.gh-issue-103895.ESB6tn.rst	
+++ /dev/null
@@ -1,3 +0,0 @@
-Improve handling of edge cases in showing ``Exception.__notes__``. Ensures
-that the messages always end with a newline and that string/bytes are not
-exploded over multiple lines. Patch by Carey Metcalfe.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-08-08-05.gh-issue-102213.nfH-4C.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-01-08-08-05.gh-issue-102213.nfH-4C.rst
deleted file mode 100644
index 997bef226e713f..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-08-08-05.gh-issue-102213.nfH-4C.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Fix performance loss when accessing an object's attributes with ``__getattr__``  defined.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-12-03-52.gh-issue-104018.PFxGS4.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-01-12-03-52.gh-issue-104018.PFxGS4.rst
deleted file mode 100644
index f3cadaee0e32d9..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-12-03-52.gh-issue-104018.PFxGS4.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Disallow the "z" format specifier in %-format of bytes objects.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-14-10-38.gh-issue-104028.dxfh13.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-01-14-10-38.gh-issue-104028.dxfh13.rst
deleted file mode 100644
index 9c35ea88499dce..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-14-10-38.gh-issue-104028.dxfh13.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Reduce object creation while calling callback function from gc.
-Patch by Dong-hee Na.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-14-48-29.gh-issue-104066.pzoUZQ.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-01-14-48-29.gh-issue-104066.pzoUZQ.rst
deleted file mode 100644
index 97e0c01689cb6f..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-14-48-29.gh-issue-104066.pzoUZQ.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Improve the performance of :func:`hasattr` for module objects with a missing
-attribute.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-21-05-47.gh-issue-104078.vRaBsU.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-01-21-05-47.gh-issue-104078.vRaBsU.rst
deleted file mode 100644
index 6f24529bac3e0c..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-01-21-05-47.gh-issue-104078.vRaBsU.rst	
+++ /dev/null
@@ -1 +0,0 @@
-Improve the performance of :c:func:`PyObject_HasAttrString`
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-02-18-29-49.gh-issue-104142._5Et6I.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-02-18-29-49.gh-issue-104142._5Et6I.rst
deleted file mode 100644
index 6a19ae84057f4c..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-02-18-29-49.gh-issue-104142._5Et6I.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix an issue where :class:`list` or :class:`tuple` repetition could fail to
-respect :pep:`683`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-03-17-46-47.gh-issue-104108.GOxAYt.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-03-17-46-47.gh-issue-104108.GOxAYt.rst
deleted file mode 100644
index dad843636493ae..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-03-17-46-47.gh-issue-104108.GOxAYt.rst	
+++ /dev/null
@@ -1,6 +0,0 @@
-Multi-phase init extension modules may now indicate whether or not they
-actually support multiple interpreters.  By default such modules are
-expected to support use in multiple interpreters.  In the uncommon case that
-one does not, it may use the new ``Py_mod_multiple_interpreters`` module def
-slot.  A value of ``0`` means the module does not support them. ``1`` means
-it does.  The default is ``1``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-05-12-14-47.gh-issue-99113.-RAdnv.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-05-12-14-47.gh-issue-99113.-RAdnv.rst
deleted file mode 100644
index 42e26cb27b6e01..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-05-12-14-47.gh-issue-99113.-RAdnv.rst	
+++ /dev/null
@@ -1,6 +0,0 @@
-The GIL is now (optionally) per-interpreter.  This is the fundamental change
-for PEP 684.  This is all made possible by virtue of the isolated state of
-each interpreter in the process.  The behavior of the main interpreter
-remains unchanged.  Likewise, interpreters created using
-``Py_NewInterpreter()`` are not affected.  To get an interpreter with its
-own GIL, call ``Py_NewInterpreterFromConfig()``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-05-13-18-56.gh-issue-99113.hT1ajK.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-05-13-18-56.gh-issue-99113.hT1ajK.rst
deleted file mode 100644
index afd26750846167..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-05-13-18-56.gh-issue-99113.hT1ajK.rst	
+++ /dev/null
@@ -1,11 +0,0 @@
-Multi-phase init extension modules may now indicate that they support
-running in subinterpreters that have their own GIL.  This is done by using
-``Py_MOD_PER_INTERPRETER_GIL_SUPPORTED`` as the value for the
-``Py_mod_multiple_interpreters`` module def slot.  Otherwise the module, by
-default, cannot be imported in such subinterpreters.  (This does not affect
-the main interpreter or subinterpreters that do not have their own GIL.)  In
-addition to the isolation that multi-phase init already normally requires,
-support for per-interpreter GIL involves one additional constraint:
-thread-safety.  If the module has external (linked) dependencies and those
-libraries have any state that isn't thread-safe then the module must do the
-additional work to add thread-safety.  This should be an uncommon case.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-08-10-34-55.gh-issue-104263.ctHWI8.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-08-10-34-55.gh-issue-104263.ctHWI8.rst
deleted file mode 100644
index 342467cfcd4e75..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-08-10-34-55.gh-issue-104263.ctHWI8.rst	
+++ /dev/null
@@ -1,6 +0,0 @@
-Fix ``float("nan")`` to produce a quiet NaN on platforms (like MIPS) where
-the meaning of the signalling / quiet bit is inverted from its usual
-meaning. Also introduce a new macro ``Py_INFINITY`` matching C99's
-``INFINITY``, and refactor internals to rely on C99's ``NAN`` and
-``INFINITY`` macros instead of hard-coding bit patterns for infinities and
-NaNs. Thanks Sebastian Berg.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-10-20-52-29.gh-issue-103082.y3LG5Q.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-10-20-52-29.gh-issue-103082.y3LG5Q.rst
deleted file mode 100644
index 40eee64dfa717d..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-10-20-52-29.gh-issue-103082.y3LG5Q.rst	
+++ /dev/null
@@ -1,5 +0,0 @@
-Change behavior of ``sys.monitoring.events.LINE`` events in
-``sys.monitoring``: Line events now occur when a new line is reached
-dynamically, instead of using a static approximation, as before. This makes
-the behavior very similar to that of "line" events in ``sys.settrace``. This
-should ease porting of tools from 3.11 to 3.12.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-11-15-56-07.gh-issue-104405.tXV5fn.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-11-15-56-07.gh-issue-104405.tXV5fn.rst
deleted file mode 100644
index 06ec5d7b0f0cc9..00000000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2023-05-11-15-56-07.gh-issue-104405.tXV5fn.rst	
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix an issue where some :term:`bytecode` instructions could ignore
-:pep:`523` when "inlining" calls.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-24-14-10-57.gh-issue-112367.9z1IDp.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-24-14-10-57.gh-issue-112367.9z1IDp.rst
new file mode 100644
index 00000000000000..991e45ad47fabe
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-24-14-10-57.gh-issue-112367.9z1IDp.rst	
@@ -0,0 +1,2 @@
+Avoid undefined behaviour when using the perf trampolines by not freeing the
+code arenas until shutdown. Patch by Pablo Galindo
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-25-20-36-38.gh-issue-99606.fDY5hK.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-25-20-36-38.gh-issue-99606.fDY5hK.rst
new file mode 100644
index 00000000000000..adc0e3a6bbc89a
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-25-20-36-38.gh-issue-99606.fDY5hK.rst	
@@ -0,0 +1,2 @@
+Make code generated for an empty f-string identical to the code of an empty
+normal string.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-25-22-39-44.gh-issue-112387.AbBq5W.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-25-22-39-44.gh-issue-112387.AbBq5W.rst
new file mode 100644
index 00000000000000..adac11bf4c90a1
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-25-22-39-44.gh-issue-112387.AbBq5W.rst	
@@ -0,0 +1,2 @@
+Fix error positions for decoded strings with backwards tokenize errors.
+Patch by Pablo Galindo
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-25-22-58-49.gh-issue-112388.MU3cIM.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-25-22-58-49.gh-issue-112388.MU3cIM.rst
new file mode 100644
index 00000000000000..1c82be2febda4f
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-25-22-58-49.gh-issue-112388.MU3cIM.rst	
@@ -0,0 +1,2 @@
+Fix an error that was causing the parser to try to overwrite tokenizer
+errors. Patch by pablo Galindo
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-26-21-30-11.gh-issue-111058.q4DqDY.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-26-21-30-11.gh-issue-111058.q4DqDY.rst
new file mode 100644
index 00000000000000..de5661f911aa82
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-26-21-30-11.gh-issue-111058.q4DqDY.rst	
@@ -0,0 +1,3 @@
+Change coro.cr_frame/gen.gi_frame to return ``None`` after the coroutine/generator has been closed.
+This fixes a bug where :func:`~inspect.getcoroutinestate` and :func:`~inspect.getgeneratorstate`
+return the wrong state for a closed coroutine/generator.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-27-18-55-30.gh-issue-112217.SwFLMj.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-27-18-55-30.gh-issue-112217.SwFLMj.rst
new file mode 100644
index 00000000000000..d4efbab6b2d128
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-27-18-55-30.gh-issue-112217.SwFLMj.rst	
@@ -0,0 +1 @@
+Add check for the type of ``__cause__`` returned from calling the type ``T`` in ``raise from T``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-12-01-19-02-21.gh-issue-105967.Puq5Cn.rst b/Misc/NEWS.d/next/Core and Builtins/2023-12-01-19-02-21.gh-issue-105967.Puq5Cn.rst
new file mode 100644
index 00000000000000..c69511218e3e16
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-12-01-19-02-21.gh-issue-105967.Puq5Cn.rst	
@@ -0,0 +1,4 @@
+Workaround a bug in Apple's macOS platform zlib library where
+:func:`zlib.crc32` and :func:`binascii.crc32` could produce incorrect results
+on multi-gigabyte inputs. Including when using :mod:`zipfile` on zips
+containing large data.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-12-03-15-29-53.gh-issue-112660.gldBvh.rst b/Misc/NEWS.d/next/Core and Builtins/2023-12-03-15-29-53.gh-issue-112660.gldBvh.rst
new file mode 100644
index 00000000000000..ea9052b3e35c48
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-12-03-15-29-53.gh-issue-112660.gldBvh.rst	
@@ -0,0 +1,2 @@
+Do not clear unexpected errors during formatting error messages for
+ImportError and AttributeError for modules.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-12-03-19-34-51.gh-issue-112625.QWTlwS.rst b/Misc/NEWS.d/next/Core and Builtins/2023-12-03-19-34-51.gh-issue-112625.QWTlwS.rst
new file mode 100644
index 00000000000000..4970e10f3f4dcb
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-12-03-19-34-51.gh-issue-112625.QWTlwS.rst	
@@ -0,0 +1 @@
+Fixes a bug where a bytearray object could be cleared while iterating over an argument in the ``bytearray.join()`` method that could result in reading memory after it was freed.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-12-04-23-09-07.gh-issue-112730.BXHlFa.rst b/Misc/NEWS.d/next/Core and Builtins/2023-12-04-23-09-07.gh-issue-112730.BXHlFa.rst
new file mode 100644
index 00000000000000..51758dd5f4c318
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-12-04-23-09-07.gh-issue-112730.BXHlFa.rst	
@@ -0,0 +1 @@
+Use color to highlight error locations in tracebacks. Patch by Pablo Galindo
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-12-07-12-00-04.gh-issue-74616.kgTGVb.rst b/Misc/NEWS.d/next/Core and Builtins/2023-12-07-12-00-04.gh-issue-74616.kgTGVb.rst
new file mode 100644
index 00000000000000..5c345be9de6d0b
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-12-07-12-00-04.gh-issue-74616.kgTGVb.rst	
@@ -0,0 +1,2 @@
+:func:`input` now raises a ValueError when output on the terminal if the
+prompt contains embedded null characters instead of silently truncating it.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-12-07-13-19-55.gh-issue-112125.4ADN7i.rst b/Misc/NEWS.d/next/Core and Builtins/2023-12-07-13-19-55.gh-issue-112125.4ADN7i.rst
new file mode 100644
index 00000000000000..52cd45029fb8c7
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-12-07-13-19-55.gh-issue-112125.4ADN7i.rst	
@@ -0,0 +1 @@
+Fix None.__ne__(None) returning NotImplemented instead of False
diff --git a/Misc/NEWS.d/next/Documentation/2023-03-07-23-30-29.gh-issue-99202.hhiAJF.rst b/Misc/NEWS.d/next/Documentation/2023-03-07-23-30-29.gh-issue-99202.hhiAJF.rst
deleted file mode 100644
index 1569e815ee50fa..00000000000000
--- a/Misc/NEWS.d/next/Documentation/2023-03-07-23-30-29.gh-issue-99202.hhiAJF.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix extension type from documentation for compiling in C++20 mode
diff --git a/Misc/NEWS.d/next/Documentation/2023-03-10-04-59-35.gh-issue-86094.zOYdy8.rst b/Misc/NEWS.d/next/Documentation/2023-03-10-04-59-35.gh-issue-86094.zOYdy8.rst
deleted file mode 100644
index 39461f3f84c9ac..00000000000000
--- a/Misc/NEWS.d/next/Documentation/2023-03-10-04-59-35.gh-issue-86094.zOYdy8.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add support for Unicode Path Extra Field in ZipFile. Patch by Yeojin Kim
-and Andrea Giudiceandrea
diff --git a/Misc/NEWS.d/next/Documentation/2023-04-25-22-58-08.gh-issue-48241.l1Gxxh.rst b/Misc/NEWS.d/next/Documentation/2023-04-25-22-58-08.gh-issue-48241.l1Gxxh.rst
deleted file mode 100644
index 619505cf6ee5b8..00000000000000
--- a/Misc/NEWS.d/next/Documentation/2023-04-25-22-58-08.gh-issue-48241.l1Gxxh.rst
+++ /dev/null
@@ -1 +0,0 @@
-Clarifying documentation about the url parameter to urllib.request.urlopen and urllib.request.Requst needing to be encoded properly.
diff --git a/Misc/NEWS.d/next/Documentation/2023-04-26-23-55-31.gh-issue-103629.-0reqn.rst b/Misc/NEWS.d/next/Documentation/2023-04-26-23-55-31.gh-issue-103629.-0reqn.rst
deleted file mode 100644
index 6dc0a1cb5a3e4f..00000000000000
--- a/Misc/NEWS.d/next/Documentation/2023-04-26-23-55-31.gh-issue-103629.-0reqn.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Mention the new way of typing ``**kwargs`` with ``Unpack`` and ``TypedDict``
-introduced in :pep:`692`.
diff --git a/Misc/NEWS.d/next/Documentation/2023-05-14-12-11-28.gh-issue-67056.nVC2Rf.rst b/Misc/NEWS.d/next/Documentation/2023-05-14-12-11-28.gh-issue-67056.nVC2Rf.rst
deleted file mode 100644
index 2c6ef17810723d..00000000000000
--- a/Misc/NEWS.d/next/Documentation/2023-05-14-12-11-28.gh-issue-67056.nVC2Rf.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Document that the effect of registering or unregistering an :mod:`atexit`
-cleanup function from within a registered cleanup function is undefined.
diff --git a/Misc/NEWS.d/next/Documentation/2023-11-30-02-33-59.gh-issue-111699._O5G_y.rst b/Misc/NEWS.d/next/Documentation/2023-11-30-02-33-59.gh-issue-111699._O5G_y.rst
new file mode 100644
index 00000000000000..2d31345e6c2044
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2023-11-30-02-33-59.gh-issue-111699._O5G_y.rst
@@ -0,0 +1 @@
+Relocate ``smtpd`` deprecation notice to its own section rather than under ``locale`` in What's New in Python 3.12 document
diff --git a/Misc/NEWS.d/next/IDLE/2023-04-30-20-01-18.gh-issue-88496.y65vUb.rst b/Misc/NEWS.d/next/IDLE/2023-04-30-20-01-18.gh-issue-88496.y65vUb.rst
deleted file mode 100644
index 4f390d189d23b5..00000000000000
--- a/Misc/NEWS.d/next/IDLE/2023-04-30-20-01-18.gh-issue-88496.y65vUb.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix IDLE test hang on macOS.
diff --git a/Misc/NEWS.d/next/Library/2018-07-16-14-10-29.bpo-22708.592iRR.rst b/Misc/NEWS.d/next/Library/2018-07-16-14-10-29.bpo-22708.592iRR.rst
deleted file mode 100644
index 00bcf38bbcdf51..00000000000000
--- a/Misc/NEWS.d/next/Library/2018-07-16-14-10-29.bpo-22708.592iRR.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-http.client CONNECT method tunnel improvements: Use HTTP 1.1 protocol; send
-a matching Host: header with CONNECT, if one is not provided; convert IDN
-domain names to Punycode. Patch by Michael Handler.
diff --git a/Misc/NEWS.d/next/Library/2019-06-14-22-37-32.bpo-37260.oecdIf.rst b/Misc/NEWS.d/next/Library/2019-06-14-22-37-32.bpo-37260.oecdIf.rst
new file mode 100644
index 00000000000000..a5f2c5e8e18919
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-06-14-22-37-32.bpo-37260.oecdIf.rst
@@ -0,0 +1,2 @@
+Fixed a race condition in :func:`shutil.rmtree` in which directory entries removed by another process or thread while ``shutil.rmtree()`` is running can cause it to raise FileNotFoundError.  Patch by Jeffrey Kintscher.
+
diff --git a/Misc/NEWS.d/next/Library/2020-02-25-00-43-22.bpo-39744.hgK689.rst b/Misc/NEWS.d/next/Library/2020-02-25-00-43-22.bpo-39744.hgK689.rst
deleted file mode 100644
index 6e690f996569a4..00000000000000
--- a/Misc/NEWS.d/next/Library/2020-02-25-00-43-22.bpo-39744.hgK689.rst
+++ /dev/null
@@ -1 +0,0 @@
-Make :func:`asyncio.subprocess.Process.communicate` close the subprocess's stdin even when called with ``input=None``.
diff --git a/Misc/NEWS.d/next/Library/2020-03-09-15-08-29.bpo-39912.xPOBBY.rst b/Misc/NEWS.d/next/Library/2020-03-09-15-08-29.bpo-39912.xPOBBY.rst
new file mode 100644
index 00000000000000..fb8579725a2d7d
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-03-09-15-08-29.bpo-39912.xPOBBY.rst
@@ -0,0 +1,3 @@
+:func:`warnings.filterwarnings()` and :func:`warnings.simplefilter()` now raise
+appropriate exceptions instead of ``AssertionError``. Patch contributed by
+Rémi Lapeyre.
diff --git a/Misc/NEWS.d/next/Library/2020-05-21-23-32-46.bpo-40262.z4fQv1.rst b/Misc/NEWS.d/next/Library/2020-05-21-23-32-46.bpo-40262.z4fQv1.rst
new file mode 100644
index 00000000000000..c017a1c8df09d8
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-05-21-23-32-46.bpo-40262.z4fQv1.rst
@@ -0,0 +1,2 @@
+The :meth:`ssl.SSLSocket.recv_into` method no longer requires the *buffer*
+argument to implement ``__len__`` and supports buffers with arbitrary item size.
diff --git a/Misc/NEWS.d/next/Library/2020-07-28-20-48-05.bpo-41422.iMwnMu.rst b/Misc/NEWS.d/next/Library/2020-07-28-20-48-05.bpo-41422.iMwnMu.rst
new file mode 100644
index 00000000000000..8bde68f8f2afc8
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-07-28-20-48-05.bpo-41422.iMwnMu.rst
@@ -0,0 +1,2 @@
+Fixed memory leaks of :class:`pickle.Pickler` and :class:`pickle.Unpickler` involving cyclic references via the
+internal memo mapping.
diff --git a/Misc/NEWS.d/next/Library/2020-12-14-09-31-13.bpo-35332.s22wAx.rst b/Misc/NEWS.d/next/Library/2020-12-14-09-31-13.bpo-35332.s22wAx.rst
new file mode 100644
index 00000000000000..80564b99a079c6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-12-14-09-31-13.bpo-35332.s22wAx.rst
@@ -0,0 +1,3 @@
+The :func:`shutil.rmtree` function now ignores errors when calling
+:func:`os.close` when *ignore_errors* is ``True``, and
+:func:`os.close` no longer retried after error.
diff --git a/Misc/NEWS.d/next/Library/2021-05-16-14-28-30.bpo-24964.Oa5Ie_.rst b/Misc/NEWS.d/next/Library/2021-05-16-14-28-30.bpo-24964.Oa5Ie_.rst
deleted file mode 100644
index ba113673b7fbe5..00000000000000
--- a/Misc/NEWS.d/next/Library/2021-05-16-14-28-30.bpo-24964.Oa5Ie_.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Added attribute '_proxy_response_headers' to HTTPConnection class. This
-attribute contains the headers of the proxy server response to the CONNECT
-request.
diff --git a/Misc/NEWS.d/next/Library/2021-11-07-15-31-25.bpo-23041.564i32.rst b/Misc/NEWS.d/next/Library/2021-11-07-15-31-25.bpo-23041.564i32.rst
deleted file mode 100644
index 53c32d397b206b..00000000000000
--- a/Misc/NEWS.d/next/Library/2021-11-07-15-31-25.bpo-23041.564i32.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add :data:`~csv.QUOTE_STRINGS` and :data:`~csv.QUOTE_NOTNULL` to the suite
-of :mod:`csv` module quoting styles.
diff --git a/Misc/NEWS.d/next/Library/2021-11-19-23-37-18.bpo-45606.UW5XE1.rst b/Misc/NEWS.d/next/Library/2021-11-19-23-37-18.bpo-45606.UW5XE1.rst
deleted file mode 100644
index 531f4729220036..00000000000000
--- a/Misc/NEWS.d/next/Library/2021-11-19-23-37-18.bpo-45606.UW5XE1.rst
+++ /dev/null
@@ -1,5 +0,0 @@
-Fixed the bug in :meth:`pathlib.Path.glob` -- previously a dangling symlink
-would not be found by this method when the pattern is an exact match, but
-would be found when the pattern contains a wildcard or the recursive
-wildcard (``**``). With this change, a dangling symlink will be found in
-both cases.
diff --git a/Misc/NEWS.d/next/Library/2021-11-23-22-22-49.bpo-32731.kNOASr.rst b/Misc/NEWS.d/next/Library/2021-11-23-22-22-49.bpo-32731.kNOASr.rst
new file mode 100644
index 00000000000000..92f3b870c11131
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2021-11-23-22-22-49.bpo-32731.kNOASr.rst
@@ -0,0 +1,3 @@
+:func:`getpass.getuser` now raises :exc:`OSError` for all failures rather
+than :exc:`ImportError` on systems lacking the :mod:`pwd` module or
+:exc:`KeyError` if the password database is empty.
diff --git a/Misc/NEWS.d/next/Library/2021-12-03-23-00-56.bpo-44844.tvg2VY.rst b/Misc/NEWS.d/next/Library/2021-12-03-23-00-56.bpo-44844.tvg2VY.rst
deleted file mode 100644
index f0c91236dfdf21..00000000000000
--- a/Misc/NEWS.d/next/Library/2021-12-03-23-00-56.bpo-44844.tvg2VY.rst
+++ /dev/null
@@ -1 +0,0 @@
-Enables :mod:`webbrowser` to detect and launch Microsoft Edge browser.
diff --git a/Misc/NEWS.d/next/Library/2021-12-06-22-10-53.bpo-43153.J7mjSy.rst b/Misc/NEWS.d/next/Library/2021-12-06-22-10-53.bpo-43153.J7mjSy.rst
new file mode 100644
index 00000000000000..7800e0a4869adf
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2021-12-06-22-10-53.bpo-43153.J7mjSy.rst
@@ -0,0 +1,4 @@
+On Windows, ``tempfile.TemporaryDirectory`` previously masked a
+``PermissionError`` with ``NotADirectoryError`` during directory cleanup. It
+now correctly raises ``PermissionError`` if errors are not ignored. Patch by
+Andrei Kulakov and Ken Jin.
diff --git a/Misc/NEWS.d/next/Library/2022-02-19-14-19-34.bpo-46797.6BXZX4.rst b/Misc/NEWS.d/next/Library/2022-02-19-14-19-34.bpo-46797.6BXZX4.rst
deleted file mode 100644
index 6539efbc9d0eb0..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-02-19-14-19-34.bpo-46797.6BXZX4.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Deprecation warnings are now emitted for :class:`!ast.Num`,
-:class:`!ast.Bytes`, :class:`!ast.Str`, :class:`!ast.NameConstant` and
-:class:`!ast.Ellipsis`. These have been documented as deprecated since Python
-3.8, and will be removed in Python 3.14.
diff --git a/Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst b/Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst
deleted file mode 100644
index 65dbdc9f60371e..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-05-02-16-21-05.gh-issue-92184.hneGVW.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-When creating zip files using :mod:`zipfile`, ``os.altsep``, if not ``None``,
-will always be treated as a path separator even when it is not ``/``.
-Patch by Carey Metcalfe.
diff --git a/Misc/NEWS.d/next/Library/2022-07-03-23-13-28.gh-issue-94518.511Tbh.rst b/Misc/NEWS.d/next/Library/2022-07-03-23-13-28.gh-issue-94518.511Tbh.rst
deleted file mode 100644
index 7719b74b8e5ef1..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-07-03-23-13-28.gh-issue-94518.511Tbh.rst
+++ /dev/null
@@ -1 +0,0 @@
-Convert private :meth:`_posixsubprocess.fork_exec` to use Argument Clinic.
diff --git a/Misc/NEWS.d/next/Library/2022-07-06-11-10-37.gh-issue-51574.sveUeD.rst b/Misc/NEWS.d/next/Library/2022-07-06-11-10-37.gh-issue-51574.sveUeD.rst
deleted file mode 100644
index 50a3d6a4629182..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-07-06-11-10-37.gh-issue-51574.sveUeD.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Make :func:`tempfile.mkdtemp` return absolute paths when its *dir*
-parameter is relative.
diff --git a/Misc/NEWS.d/next/Library/2022-09-03-09-24-02.gh-issue-96534.EU4Oxv.rst b/Misc/NEWS.d/next/Library/2022-09-03-09-24-02.gh-issue-96534.EU4Oxv.rst
deleted file mode 100644
index 0497d9eb69163e..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-09-03-09-24-02.gh-issue-96534.EU4Oxv.rst
+++ /dev/null
@@ -1 +0,0 @@
-Support divert(4) added in FreeBSD 14.
diff --git a/Misc/NEWS.d/next/Library/2022-10-09-14-47-42.gh-issue-98040.IN3qab.rst b/Misc/NEWS.d/next/Library/2022-10-09-14-47-42.gh-issue-98040.IN3qab.rst
deleted file mode 100644
index ac185406844153..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-10-09-14-47-42.gh-issue-98040.IN3qab.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Remove more deprecated importlib APIs: ``find_loader()``, ``find_module()``,
-``importlib.abc.Finder``, ``pkgutil.ImpImporter``, ``pkgutil.ImpLoader``.
diff --git a/Misc/NEWS.d/next/Library/2022-10-21-16-23-31.gh-issue-97850.N46coo.rst b/Misc/NEWS.d/next/Library/2022-10-21-16-23-31.gh-issue-97850.N46coo.rst
deleted file mode 100644
index e3297d164fff6d..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-10-21-16-23-31.gh-issue-97850.N46coo.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Deprecate :func:`pkgutil.find_loader` and :func:`pkgutil.get_loader`
-in favor of :func:`importlib.util.find_spec`.
diff --git a/Misc/NEWS.d/next/Library/2022-10-21-17-20-57.gh-issue-98040.3btbmA.rst b/Misc/NEWS.d/next/Library/2022-10-21-17-20-57.gh-issue-98040.3btbmA.rst
deleted file mode 100644
index f67bffcb0ddc6c..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-10-21-17-20-57.gh-issue-98040.3btbmA.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove the long-deprecated ``imp`` module.
diff --git a/Misc/NEWS.d/next/Library/2022-11-10-16-26-47.gh-issue-99353.DQFjnt.rst b/Misc/NEWS.d/next/Library/2022-11-10-16-26-47.gh-issue-99353.DQFjnt.rst
deleted file mode 100644
index 1ad42d5c9aa53d..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-11-10-16-26-47.gh-issue-99353.DQFjnt.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Respect the :class:`http.client.HTTPConnection` ``.debuglevel`` flag
-in :class:`urllib.request.AbstractHTTPHandler` when its constructor
-parameter ``debuglevel`` is not set. And do the same for ``*HTTPS*``.
diff --git a/Misc/NEWS.d/next/Library/2022-12-01-16-57-44.gh-issue-91133.LKMVCV.rst b/Misc/NEWS.d/next/Library/2022-12-01-16-57-44.gh-issue-91133.LKMVCV.rst
new file mode 100644
index 00000000000000..7991048fc48e03
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-12-01-16-57-44.gh-issue-91133.LKMVCV.rst
@@ -0,0 +1,2 @@
+Fix a bug in :class:`tempfile.TemporaryDirectory` cleanup, which now no longer
+dereferences symlinks when working around file system permission errors.
diff --git a/Misc/NEWS.d/next/Library/2023-01-14-17-54-56.gh-issue-95299.vUhpKz.rst b/Misc/NEWS.d/next/Library/2023-01-14-17-54-56.gh-issue-95299.vUhpKz.rst
deleted file mode 100644
index 29c30848e09a83..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-01-14-17-54-56.gh-issue-95299.vUhpKz.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove the bundled setuptools wheel from ``ensurepip``, and stop installing setuptools in environments created by ``venv``.
diff --git a/Misc/NEWS.d/next/Library/2023-01-22-14-53-12.gh-issue-89550.c1U23f.rst b/Misc/NEWS.d/next/Library/2023-01-22-14-53-12.gh-issue-89550.c1U23f.rst
deleted file mode 100644
index 556db0eae00c0b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-01-22-14-53-12.gh-issue-89550.c1U23f.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Decrease execution time of some :mod:`gzip` file writes by 15% by
-adding more appropriate buffering.
diff --git a/Misc/NEWS.d/next/Library/2023-02-06-16-45-18.gh-issue-83861.mMbIU3.rst b/Misc/NEWS.d/next/Library/2023-02-06-16-45-18.gh-issue-83861.mMbIU3.rst
deleted file mode 100644
index e85e7a4ff2e73a..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-02-06-16-45-18.gh-issue-83861.mMbIU3.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Fix datetime.astimezone method return value when invoked on a naive datetime
-instance that represents local time falling in a timezone transition gap.
-PEP 495 requires that instances with fold=1 produce earlier times than those
-with fold=0 in this case.
diff --git a/Misc/NEWS.d/next/Library/2023-02-09-22-24-34.gh-issue-101640.oFuEpB.rst b/Misc/NEWS.d/next/Library/2023-02-09-22-24-34.gh-issue-101640.oFuEpB.rst
deleted file mode 100644
index 917cf0f97b9e06..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-02-09-22-24-34.gh-issue-101640.oFuEpB.rst
+++ /dev/null
@@ -1 +0,0 @@
-:class:`argparse.ArgumentParser` now catches errors when writing messages, such as when :data:`sys.stderr` is ``None``. Patch by Oleg Iarygin.
diff --git a/Misc/NEWS.d/next/Library/2023-02-11-15-01-32.gh-issue-101688.kwXmfM.rst b/Misc/NEWS.d/next/Library/2023-02-11-15-01-32.gh-issue-101688.kwXmfM.rst
deleted file mode 100644
index 6df69463931494..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-02-11-15-01-32.gh-issue-101688.kwXmfM.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Implement :func:`types.get_original_bases` to provide further introspection
-for types.
diff --git a/Misc/NEWS.d/next/Library/2023-02-17-21-14-40.gh-issue-78079.z3Szr6.rst b/Misc/NEWS.d/next/Library/2023-02-17-21-14-40.gh-issue-78079.z3Szr6.rst
deleted file mode 100644
index bbb9ac3e3f8faa..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-02-17-21-14-40.gh-issue-78079.z3Szr6.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Fix incorrect normalization of UNC device path roots, and partial UNC share
-path roots, in :class:`pathlib.PurePath`. Pathlib no longer appends a
-trailing slash to such paths.
diff --git a/Misc/NEWS.d/next/Library/2023-02-19-12-37-08.gh-issue-62432.GnBFIB.rst b/Misc/NEWS.d/next/Library/2023-02-19-12-37-08.gh-issue-62432.GnBFIB.rst
deleted file mode 100644
index a8d66ea48c3278..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-02-19-12-37-08.gh-issue-62432.GnBFIB.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-The :mod:`unittest` runner will now exit with status code 5 if no tests
-were run. It is common for test runner misconfiguration to fail to find
-any tests, this should be an error.
diff --git a/Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst b/Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst
deleted file mode 100644
index 4140c9a96cd272..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst
+++ /dev/null
@@ -1 +0,0 @@
-Functions in the :mod:`dis` module that accept a source code string as argument now print a more concise traceback when the string contains a syntax or indentation error.
diff --git a/Misc/NEWS.d/next/Library/2023-03-06-18-49-57.gh-issue-101362.eSSy6L.rst b/Misc/NEWS.d/next/Library/2023-03-06-18-49-57.gh-issue-101362.eSSy6L.rst
deleted file mode 100644
index 87617a503c0dba..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-06-18-49-57.gh-issue-101362.eSSy6L.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Speed up :class:`pathlib.Path` construction by omitting the path anchor from
-the internal list of path parts.
diff --git a/Misc/NEWS.d/next/Library/2023-03-08-02-45-46.gh-issue-91896.kgON_a.rst b/Misc/NEWS.d/next/Library/2023-03-08-02-45-46.gh-issue-91896.kgON_a.rst
deleted file mode 100644
index b5282d3d612916..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-08-02-45-46.gh-issue-91896.kgON_a.rst
+++ /dev/null
@@ -1 +0,0 @@
-Deprecate :class:`collections.abc.ByteString`
diff --git a/Misc/NEWS.d/next/Library/2023-03-14-11-20-19.gh-issue-101819.0-h0it.rst b/Misc/NEWS.d/next/Library/2023-03-14-11-20-19.gh-issue-101819.0-h0it.rst
deleted file mode 100644
index 4a73bbf32b370e..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-14-11-20-19.gh-issue-101819.0-h0it.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Isolate the :mod:`io` extension module by applying :pep:`687`. Patch by
-Kumar Aditya, Victor Stinner, and Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-03-15-00-37-43.gh-issue-81079.heTAod.rst b/Misc/NEWS.d/next/Library/2023-03-15-00-37-43.gh-issue-81079.heTAod.rst
deleted file mode 100644
index ef5690533985d5..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-15-00-37-43.gh-issue-81079.heTAod.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add *case_sensitive* keyword-only argument to :meth:`pathlib.Path.glob` and
-:meth:`~pathlib.Path.rglob`.
diff --git a/Misc/NEWS.d/next/Library/2023-03-15-12-18-07.gh-issue-97696.DtnpIC.rst b/Misc/NEWS.d/next/Library/2023-03-15-12-18-07.gh-issue-97696.DtnpIC.rst
deleted file mode 100644
index 0b3854d74eb991..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-15-12-18-07.gh-issue-97696.DtnpIC.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Implemented an eager task factory in asyncio.
-When used as a task factory on an event loop, it performs eager execution of
-coroutines. Coroutines that are able to complete synchronously (e.g. return or
-raise without blocking) are returned immediately as a finished task, and the
-task is never scheduled to the event loop. If the coroutine blocks, the
-(pending) task is scheduled and returned.
diff --git a/Misc/NEWS.d/next/Library/2023-03-23-15-24-38.gh-issue-102953.YR4KaK.rst b/Misc/NEWS.d/next/Library/2023-03-23-15-24-38.gh-issue-102953.YR4KaK.rst
deleted file mode 100644
index 48a105a4a17b29..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-23-15-24-38.gh-issue-102953.YR4KaK.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`,
-have a new a *filter* argument that allows limiting tar features than may be
-surprising or dangerous, such as creating files outside the destination
-directory. See :ref:`tarfile-extraction-filter` for details.
diff --git a/Misc/NEWS.d/next/Library/2023-03-24-20-49-48.gh-issue-103000.6eVNZI.rst b/Misc/NEWS.d/next/Library/2023-03-24-20-49-48.gh-issue-103000.6eVNZI.rst
deleted file mode 100644
index 15f16d9eb4c1bf..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-24-20-49-48.gh-issue-103000.6eVNZI.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Improve performance of :func:`dataclasses.astuple` and
-:func:`dataclasses.asdict` in cases where the contents are common Python types.
diff --git a/Misc/NEWS.d/next/Library/2023-03-28-09-13-31.gh-issue-103015.ETTfNf.rst b/Misc/NEWS.d/next/Library/2023-03-28-09-13-31.gh-issue-103015.ETTfNf.rst
deleted file mode 100644
index dcac1a28ca5847..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-28-09-13-31.gh-issue-103015.ETTfNf.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Add *entrypoint* keyword-only parameter to
-:meth:`sqlite3.Connection.load_extension`, for overriding the SQLite
-extension entry point. Patch by Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-03-31-01-13-00.gh-issue-103143.6eMluy.rst b/Misc/NEWS.d/next/Library/2023-03-31-01-13-00.gh-issue-103143.6eMluy.rst
deleted file mode 100644
index 32bd62d27c7c6d..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-03-31-01-13-00.gh-issue-103143.6eMluy.rst
+++ /dev/null
@@ -1 +0,0 @@
-Polish the help messages and docstrings of :mod:`pdb`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-01-23-01-31.gh-issue-103176.FBsdxa.rst b/Misc/NEWS.d/next/Library/2023-04-01-23-01-31.gh-issue-103176.FBsdxa.rst
deleted file mode 100644
index b89f9bae595457..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-01-23-01-31.gh-issue-103176.FBsdxa.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-:func:`sys._current_exceptions` now returns a mapping from thread-id to an
-exception instance, rather than to a ``(typ, exc, tb)`` tuple.
diff --git a/Misc/NEWS.d/next/Library/2023-04-02-17-51-08.gh-issue-103193.xrZbM1.rst b/Misc/NEWS.d/next/Library/2023-04-02-17-51-08.gh-issue-103193.xrZbM1.rst
deleted file mode 100644
index f0b76a605a5610..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-02-17-51-08.gh-issue-103193.xrZbM1.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Improve performance of :func:`inspect.getattr_static`. Patch by Alex
-Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-04-02-22-04-26.gh-issue-75586.526iJm.rst b/Misc/NEWS.d/next/Library/2023-04-02-22-04-26.gh-issue-75586.526iJm.rst
deleted file mode 100644
index 8ec568ec4e4775..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-02-22-04-26.gh-issue-75586.526iJm.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix various Windows-specific issues with ``shutil.which``.
diff --git a/Misc/NEWS.d/next/Library/2023-04-02-23-05-22.gh-issue-103204.bbDmu0.rst b/Misc/NEWS.d/next/Library/2023-04-02-23-05-22.gh-issue-103204.bbDmu0.rst
deleted file mode 100644
index f8b3aa5151b622..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-02-23-05-22.gh-issue-103204.bbDmu0.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Fixes :mod:`http.server` accepting HTTP requests with HTTP version numbers
-preceded by '+', or '-', or with digit-separating '_' characters.  The length
-of the version numbers is also constrained.
diff --git a/Misc/NEWS.d/next/Library/2023-04-03-21-08-53.gh-issue-103220.OW_Bj5.rst b/Misc/NEWS.d/next/Library/2023-04-03-21-08-53.gh-issue-103220.OW_Bj5.rst
deleted file mode 100644
index 9cf26c26873b2a..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-03-21-08-53.gh-issue-103220.OW_Bj5.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix issue where :func:`os.path.join` added a slash when joining onto an
-incomplete UNC drive with a trailing slash on Windows.
diff --git a/Misc/NEWS.d/next/Library/2023-04-03-22-02-35.gh-issue-100479.kNBjQm.rst b/Misc/NEWS.d/next/Library/2023-04-03-22-02-35.gh-issue-100479.kNBjQm.rst
deleted file mode 100644
index 58db90480d2ff0..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-03-22-02-35.gh-issue-100479.kNBjQm.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Add :meth:`pathlib.PurePath.with_segments`, which creates a path object from
-arguments. This method is called whenever a derivative path is created, such
-as from :attr:`pathlib.PurePath.parent`. Subclasses may override this method
-to share information between path objects.
diff --git a/Misc/NEWS.d/next/Library/2023-04-03-23-43-12.gh-issue-103092.3xqk4y.rst b/Misc/NEWS.d/next/Library/2023-04-03-23-43-12.gh-issue-103092.3xqk4y.rst
deleted file mode 100644
index e7586a223c1415..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-03-23-43-12.gh-issue-103092.3xqk4y.rst
+++ /dev/null
@@ -1 +0,0 @@
-Isolate :mod:`!_socket` (apply :pep:`687`). Patch by Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-04-03-23-44-34.gh-issue-102978.gy9eVk.rst b/Misc/NEWS.d/next/Library/2023-04-03-23-44-34.gh-issue-102978.gy9eVk.rst
deleted file mode 100644
index df63af10a385eb..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-03-23-44-34.gh-issue-102978.gy9eVk.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Fixes :func:`unittest.mock.patch` not enforcing function signatures for methods
-decorated with ``@classmethod`` or ``@staticmethod`` when patch is called with
-``autospec=True``.
diff --git a/Misc/NEWS.d/next/Library/2023-04-04-12-43-38.gh-issue-93910.jurMzv.rst b/Misc/NEWS.d/next/Library/2023-04-04-12-43-38.gh-issue-93910.jurMzv.rst
deleted file mode 100644
index 783aefae0770a9..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-04-12-43-38.gh-issue-93910.jurMzv.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove deprecation of enum ``memmber.member`` access.
diff --git a/Misc/NEWS.d/next/Library/2023-04-04-21-27-51.gh-issue-103092.7s7Bzf.rst b/Misc/NEWS.d/next/Library/2023-04-04-21-27-51.gh-issue-103092.7s7Bzf.rst
deleted file mode 100644
index 39c62ffbe8c659..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-04-21-27-51.gh-issue-103092.7s7Bzf.rst
+++ /dev/null
@@ -1 +0,0 @@
-Adapt the :mod:`winsound` extension module to :pep:`687`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-04-21-44-25.gh-issue-103092.Dz0_Xn.rst b/Misc/NEWS.d/next/Library/2023-04-04-21-44-25.gh-issue-103092.Dz0_Xn.rst
deleted file mode 100644
index 7bd191e3c22b2b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-04-21-44-25.gh-issue-103092.Dz0_Xn.rst
+++ /dev/null
@@ -1 +0,0 @@
-Adapt the :mod:`msvcrt` extension module to :pep:`687`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-05-01-28-53.gh-issue-103225.QD3JVU.rst b/Misc/NEWS.d/next/Library/2023-04-05-01-28-53.gh-issue-103225.QD3JVU.rst
deleted file mode 100644
index 5d1a063acdeb8c..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-05-01-28-53.gh-issue-103225.QD3JVU.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug in :mod:`pdb` when displaying line numbers of module-level source code.
diff --git a/Misc/NEWS.d/next/Library/2023-04-06-04-35-59.gh-issue-103285.rCZ9-G.rst b/Misc/NEWS.d/next/Library/2023-04-06-04-35-59.gh-issue-103285.rCZ9-G.rst
deleted file mode 100644
index 62b4364c2b1665..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-06-04-35-59.gh-issue-103285.rCZ9-G.rst
+++ /dev/null
@@ -1 +0,0 @@
-Improve performance of :func:`ast.get_source_segment`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-06-16-55-51.gh-issue-102778.BWeAmE.rst b/Misc/NEWS.d/next/Library/2023-04-06-16-55-51.gh-issue-102778.BWeAmE.rst
deleted file mode 100644
index 64ae5b5b6d564b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-06-16-55-51.gh-issue-102778.BWeAmE.rst
+++ /dev/null
@@ -1 +0,0 @@
-Support ``sys.last_exc`` in :mod:`idlelib`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-06-17-28-36.gh-issue-103256.1syxfs.rst b/Misc/NEWS.d/next/Library/2023-04-06-17-28-36.gh-issue-103256.1syxfs.rst
deleted file mode 100644
index 894c046dcdf0fd..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-06-17-28-36.gh-issue-103256.1syxfs.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Fixed a bug that caused :mod:`hmac` to raise an exception when the requested
-hash algorithm was not available in OpenSSL despite being available
-separately as part of ``hashlib`` itself.  It now falls back properly to the
-built-in. This could happen when, for example, your OpenSSL does not include
-SHA3 support and you want to compute ``hmac.digest(b'K', b'M',
-'sha3_256')``.
diff --git a/Misc/NEWS.d/next/Library/2023-04-07-15-09-26.gh-issue-74690.0f886b.rst b/Misc/NEWS.d/next/Library/2023-04-07-15-09-26.gh-issue-74690.0f886b.rst
deleted file mode 100644
index 0a103ae11970d4..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-07-15-09-26.gh-issue-74690.0f886b.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-The members of a runtime-checkable protocol are now considered "frozen" at
-runtime as soon as the class has been created. See
-:ref:`"What's new in Python 3.12" <whatsnew-typing-py312>` for more details.
diff --git a/Misc/NEWS.d/next/Library/2023-04-07-15-15-40.gh-issue-74690.un84hh.rst b/Misc/NEWS.d/next/Library/2023-04-07-15-15-40.gh-issue-74690.un84hh.rst
deleted file mode 100644
index 48f11aac692ddb..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-07-15-15-40.gh-issue-74690.un84hh.rst
+++ /dev/null
@@ -1,8 +0,0 @@
-The performance of :func:`isinstance` checks against
-:func:`runtime-checkable protocols <typing.runtime_checkable>` has been
-considerably improved for protocols that only have a few members. To achieve
-this improvement, several internal implementation details of the
-:mod:`typing` module have been refactored, including
-``typing._ProtocolMeta.__instancecheck__``,
-``typing._is_callable_members_only``, and ``typing._get_protocol_attrs``.
-Patches by Alex Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-04-08-00-48-40.gh-issue-103092.5EFts0.rst b/Misc/NEWS.d/next/Library/2023-04-08-00-48-40.gh-issue-103092.5EFts0.rst
deleted file mode 100644
index 0f2108fee763d0..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-08-00-48-40.gh-issue-103092.5EFts0.rst
+++ /dev/null
@@ -1 +0,0 @@
-Adapt the :mod:`winreg` extension module to :pep:`687`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-08-01-33-12.gh-issue-103357.vjin28.rst b/Misc/NEWS.d/next/Library/2023-04-08-01-33-12.gh-issue-103357.vjin28.rst
deleted file mode 100644
index 83dce56ed0b7c5..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-08-01-33-12.gh-issue-103357.vjin28.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Added support for :class:`logging.Formatter` ``defaults`` parameter to
-:func:`logging.config.dictConfig` and :func:`logging.config.fileConfig`.
-Patch by Bar Harel.
diff --git a/Misc/NEWS.d/next/Library/2023-04-09-06-59-36.gh-issue-103092.vskbro.rst b/Misc/NEWS.d/next/Library/2023-04-09-06-59-36.gh-issue-103092.vskbro.rst
deleted file mode 100644
index 6977c1489a29cb..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-09-06-59-36.gh-issue-103092.vskbro.rst
+++ /dev/null
@@ -1 +0,0 @@
-Isolate :mod:`!_collections` (apply :pep:`687`). Patch by Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-04-11-21-38-39.gh-issue-103449.-nxmhb.rst b/Misc/NEWS.d/next/Library/2023-04-11-21-38-39.gh-issue-103449.-nxmhb.rst
deleted file mode 100644
index 0b2b47af1cbaab..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-11-21-38-39.gh-issue-103449.-nxmhb.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug in doc string generation in :func:`dataclasses.dataclass`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-12-06-00-02.gh-issue-103462.w6yBlM.rst b/Misc/NEWS.d/next/Library/2023-04-12-06-00-02.gh-issue-103462.w6yBlM.rst
deleted file mode 100644
index 50758c89cc2856..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-12-06-00-02.gh-issue-103462.w6yBlM.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Fixed an issue with using :meth:`~asyncio.WriteTransport.writelines` in :mod:`asyncio` to send very
-large payloads that exceed the amount of data that can be written in one
-call to :meth:`socket.socket.send` or :meth:`socket.socket.sendmsg`,
-resulting in the remaining buffer being left unwritten.
diff --git a/Misc/NEWS.d/next/Library/2023-04-12-13-04-16.gh-issue-103472.C6bOHv.rst b/Misc/NEWS.d/next/Library/2023-04-12-13-04-16.gh-issue-103472.C6bOHv.rst
deleted file mode 100644
index 01d84f024bd4a6..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-12-13-04-16.gh-issue-103472.C6bOHv.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Avoid a potential :exc:`ResourceWarning` in :class:`http.client.HTTPConnection`
-by closing the proxy / tunnel's CONNECT response explicitly.
diff --git a/Misc/NEWS.d/next/Library/2023-04-12-17-59-55.gh-issue-103365.UBEE0U.rst b/Misc/NEWS.d/next/Library/2023-04-12-17-59-55.gh-issue-103365.UBEE0U.rst
deleted file mode 100644
index 4d69f6f6fff713..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-12-17-59-55.gh-issue-103365.UBEE0U.rst
+++ /dev/null
@@ -1 +0,0 @@
-Set default Flag boundary to ``STRICT`` and fix bitwise operations.
diff --git a/Misc/NEWS.d/next/Library/2023-04-13-13-17-47.gh-issue-103489.ZSZgmu.rst b/Misc/NEWS.d/next/Library/2023-04-13-13-17-47.gh-issue-103489.ZSZgmu.rst
deleted file mode 100644
index 264564d018ceb4..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-13-13-17-47.gh-issue-103489.ZSZgmu.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Add :meth:`~sqlite3.Connection.getconfig` and
-:meth:`~sqlite3.Connection.setconfig` to :class:`~sqlite3.Connection` to
-make configuration changes to a database connection. Patch by Erlend E.
-Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-04-13-19-43-15.gh-issue-103525.uY4VYg.rst b/Misc/NEWS.d/next/Library/2023-04-13-19-43-15.gh-issue-103525.uY4VYg.rst
deleted file mode 100644
index 1414cb07dd9155..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-13-19-43-15.gh-issue-103525.uY4VYg.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix misleading exception message when mixed ``str`` and ``bytes`` arguments
-are supplied to :class:`pathlib.PurePath` and :class:`~pathlib.Path`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-14-06-32-54.gh-issue-103533.n_AfcS.rst b/Misc/NEWS.d/next/Library/2023-04-14-06-32-54.gh-issue-103533.n_AfcS.rst
deleted file mode 100644
index 1008ea076c71a0..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-14-06-32-54.gh-issue-103533.n_AfcS.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update :mod:`cProfile` to use PEP 669 API
diff --git a/Misc/NEWS.d/next/Library/2023-04-14-21-12-32.gh-issue-103538.M4FK_v.rst b/Misc/NEWS.d/next/Library/2023-04-14-21-12-32.gh-issue-103538.M4FK_v.rst
deleted file mode 100644
index 32788307d6f33b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-14-21-12-32.gh-issue-103538.M4FK_v.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Remove ``_tkinter`` module code guarded by definition of the ``TK_AQUA`` macro
-which was only needed for Tk 8.4.7 or earlier and was never actually defined by
-any build system or documented for manual use.
diff --git a/Misc/NEWS.d/next/Library/2023-04-14-21-16-05.gh-issue-103548.lagdpp.rst b/Misc/NEWS.d/next/Library/2023-04-14-21-16-05.gh-issue-103548.lagdpp.rst
deleted file mode 100644
index 238f2868867472..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-14-21-16-05.gh-issue-103548.lagdpp.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Improve performance of :meth:`pathlib.Path.absolute` and
-:meth:`~pathlib.Path.cwd` by joining paths only when necessary. Also improve
-performance of :meth:`pathlib.PurePath.is_absolute` on Posix by skipping path
-parsing and normalization.
diff --git a/Misc/NEWS.d/next/Library/2023-04-15-11-21-38.gh-issue-103559.a9rYHG.rst b/Misc/NEWS.d/next/Library/2023-04-15-11-21-38.gh-issue-103559.a9rYHG.rst
deleted file mode 100644
index 2c9d67e2c4bf71..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-15-11-21-38.gh-issue-103559.a9rYHG.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update the bundled copy of pip to version 23.1.1.
diff --git a/Misc/NEWS.d/next/Library/2023-04-15-12-19-14.gh-issue-103556.TEf-2m.rst b/Misc/NEWS.d/next/Library/2023-04-15-12-19-14.gh-issue-103556.TEf-2m.rst
deleted file mode 100644
index fe2267b7b79019..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-15-12-19-14.gh-issue-103556.TEf-2m.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Now creating :class:`inspect.Signature` objects with positional-only
-parameter with a default followed by a positional-or-keyword parameter
-without one is impossible.
diff --git a/Misc/NEWS.d/next/Library/2023-04-16-18-29-04.gh-issue-103578.fly1wc.rst b/Misc/NEWS.d/next/Library/2023-04-16-18-29-04.gh-issue-103578.fly1wc.rst
deleted file mode 100644
index 69986c2a15b39e..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-16-18-29-04.gh-issue-103578.fly1wc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fixed a bug where :mod:`pdb` crashes when reading source file with different encoding by replacing :func:`io.open` with :func:`io.open_code`. The new method would also call into the hook set by :func:`PyFile_SetOpenCodeHook`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-16-19-48-21.gh-issue-103584.3mBTuM.rst b/Misc/NEWS.d/next/Library/2023-04-16-19-48-21.gh-issue-103584.3mBTuM.rst
deleted file mode 100644
index 6d7c93ade9cd94..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-16-19-48-21.gh-issue-103584.3mBTuM.rst
+++ /dev/null
@@ -1,12 +0,0 @@
-Updated ``importlib.metadata`` with changes from ``importlib_metadata`` 5.2
-through 6.5.0, including: Support ``installed-files.txt`` for
-``Distribution.files`` when present. ``PackageMetadata`` now stipulates an
-additional ``get`` method allowing for easy querying of metadata keys that
-may not be present. ``packages_distributions`` now honors packages and
-modules with Python modules that not ``.py`` sources (e.g. ``.pyc``,
-``.so``). Expand protocol for ``PackageMetadata.get_all`` to match the
-upstream implementation of ``email.message.Message.get_all`` in
-python/typeshed#9620. Deprecated use of ``Distribution`` without defining
-abstract methods. Deprecated expectation that
-``PackageMetadata.__getitem__`` will return ``None`` for missing keys. In
-the future, it will raise a ``KeyError``.
diff --git a/Misc/NEWS.d/next/Library/2023-04-17-14-47-28.gh-issue-103596.ME1y3_.rst b/Misc/NEWS.d/next/Library/2023-04-17-14-47-28.gh-issue-103596.ME1y3_.rst
deleted file mode 100644
index 2fa27e60b58efe..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-17-14-47-28.gh-issue-103596.ME1y3_.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Attributes/methods are no longer shadowed by same-named enum members,
-although they may be shadowed by enum.property's.
diff --git a/Misc/NEWS.d/next/Library/2023-04-19-16-08-53.gh-issue-84976.HwbzlD.rst b/Misc/NEWS.d/next/Library/2023-04-19-16-08-53.gh-issue-84976.HwbzlD.rst
deleted file mode 100644
index 8658627aeba434..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-19-16-08-53.gh-issue-84976.HwbzlD.rst
+++ /dev/null
@@ -1,5 +0,0 @@
-Create a new ``Lib/_pydatetime.py`` file that defines the Python version of
-the ``datetime`` module, and make ``datetime`` import the contents of the
-new library only if the C implementation is missing. Currently, the full
-Python implementation is defined and then deleted if the C implementation is
-not available, slowing down ``import datetime`` unnecessarily.
diff --git a/Misc/NEWS.d/next/Library/2023-04-21-10-25-39.gh-issue-103636.YK6NEa.rst b/Misc/NEWS.d/next/Library/2023-04-21-10-25-39.gh-issue-103636.YK6NEa.rst
deleted file mode 100644
index b3b5085250f078..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-21-10-25-39.gh-issue-103636.YK6NEa.rst
+++ /dev/null
@@ -1 +0,0 @@
-Added Enum for months and days in the calendar module.
diff --git a/Misc/NEWS.d/next/Library/2023-04-22-02-41-06.gh-issue-103673.oE7S_k.rst b/Misc/NEWS.d/next/Library/2023-04-22-02-41-06.gh-issue-103673.oE7S_k.rst
deleted file mode 100644
index bd5317744ff140..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-22-02-41-06.gh-issue-103673.oE7S_k.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-:mod:`socketserver` gains ``ForkingUnixStreamServer`` and
-``ForkingUnixDatagramServer`` classes. Patch by Jay Berry.
diff --git a/Misc/NEWS.d/next/Library/2023-04-22-11-20-27.gh-issue-89415.YHk760.rst b/Misc/NEWS.d/next/Library/2023-04-22-11-20-27.gh-issue-89415.YHk760.rst
deleted file mode 100644
index a5b99a2f1360f0..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-22-11-20-27.gh-issue-89415.YHk760.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add :mod:`socket` constants for source-specific multicast.
-Patch by Reese Hyde.
diff --git a/Misc/NEWS.d/next/Library/2023-04-22-21-34-13.gh-issue-103693.SBtuLQ.rst b/Misc/NEWS.d/next/Library/2023-04-22-21-34-13.gh-issue-103693.SBtuLQ.rst
deleted file mode 100644
index 52c68bfc9ceea4..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-22-21-34-13.gh-issue-103693.SBtuLQ.rst
+++ /dev/null
@@ -1 +0,0 @@
-Add convenience variable feature to :mod:`pdb`
diff --git a/Misc/NEWS.d/next/Library/2023-04-22-22-37-39.gh-issue-103699.NizCjc.rst b/Misc/NEWS.d/next/Library/2023-04-22-22-37-39.gh-issue-103699.NizCjc.rst
deleted file mode 100644
index 60547a25a109bc..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-22-22-37-39.gh-issue-103699.NizCjc.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add ``__orig_bases__`` to non-generic TypedDicts, call-based TypedDicts, and
-call-based NamedTuples. Other TypedDicts and NamedTuples already had the attribute.
diff --git a/Misc/NEWS.d/next/Library/2023-04-23-15-39-17.gh-issue-81403.zVz9Td.rst b/Misc/NEWS.d/next/Library/2023-04-23-15-39-17.gh-issue-81403.zVz9Td.rst
deleted file mode 100644
index 6adb71f7677229..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-23-15-39-17.gh-issue-81403.zVz9Td.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-:class:`urllib.request.CacheFTPHandler` no longer raises :class:`URLError`
-if a cached FTP instance is reused. ftplib's endtransfer method calls
-voidresp to drain the connection to handle FTP instance reuse properly.
diff --git a/Misc/NEWS.d/next/Library/2023-04-24-00-34-23.gh-issue-103685.U14jBM.rst b/Misc/NEWS.d/next/Library/2023-04-24-00-34-23.gh-issue-103685.U14jBM.rst
deleted file mode 100644
index 31df04790721a8..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-24-00-34-23.gh-issue-103685.U14jBM.rst
+++ /dev/null
@@ -1 +0,0 @@
-Prepare :meth:`tkinter.Menu.index` for Tk 8.7 so that it does not raise ``TclError: expected integer but got ""`` when it should return ``None``.
diff --git a/Misc/NEWS.d/next/Library/2023-04-24-16-00-28.gh-issue-90750.da0Xi8.rst b/Misc/NEWS.d/next/Library/2023-04-24-16-00-28.gh-issue-90750.da0Xi8.rst
deleted file mode 100644
index 99e10f140f5049..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-24-16-00-28.gh-issue-90750.da0Xi8.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Use :meth:`datetime.datetime.fromisocalendar` in the implementation of
-:meth:`datetime.datetime.strptime`, which should now accept only valid ISO
-dates. (Patch by Paul Ganssle)
diff --git a/Misc/NEWS.d/next/Library/2023-04-24-23-07-56.gh-issue-103791.bBPWdS.rst b/Misc/NEWS.d/next/Library/2023-04-24-23-07-56.gh-issue-103791.bBPWdS.rst
deleted file mode 100644
index f00384cde9706e..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-24-23-07-56.gh-issue-103791.bBPWdS.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-:class:`contextlib.suppress` now supports suppressing exceptions raised as
-part of an :exc:`ExceptionGroup`. If other exceptions exist on the group, they
-are re-raised in a group that does not contain the suppressed exceptions.
diff --git a/Misc/NEWS.d/next/Library/2023-04-25-17-03-18.gh-issue-103857.Mr2Cak.rst b/Misc/NEWS.d/next/Library/2023-04-25-17-03-18.gh-issue-103857.Mr2Cak.rst
deleted file mode 100644
index 3bd370dabf4ed5..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-25-17-03-18.gh-issue-103857.Mr2Cak.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Deprecated :meth:`datetime.datetime.utcnow` and
-:meth:`datetime.datetime.utcfromtimestamp`. (Patch by Paul Ganssle)
diff --git a/Misc/NEWS.d/next/Library/2023-04-25-22-06-00.gh-issue-74940.TOacQ9.rst b/Misc/NEWS.d/next/Library/2023-04-25-22-06-00.gh-issue-74940.TOacQ9.rst
deleted file mode 100644
index c37d795f3eb33d..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-25-22-06-00.gh-issue-74940.TOacQ9.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-The C.UTF-8 locale is no longer converted to en_US.UTF-8, enabling the use
-of UTF-8 encoding on systems which have no locales installed.
diff --git a/Misc/NEWS.d/next/Library/2023-04-25-22-59-06.gh-issue-99944.pst8iT.rst b/Misc/NEWS.d/next/Library/2023-04-25-22-59-06.gh-issue-99944.pst8iT.rst
deleted file mode 100644
index 80238a65e32a41..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-25-22-59-06.gh-issue-99944.pst8iT.rst
+++ /dev/null
@@ -1 +0,0 @@
-Make :mod:`dis` display the value of oparg of :opcode:`KW_NAMES`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-26-09-38-47.gh-issue-103872.8LBsDz.rst b/Misc/NEWS.d/next/Library/2023-04-26-09-38-47.gh-issue-103872.8LBsDz.rst
deleted file mode 100644
index b840f9f5769f08..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-26-09-38-47.gh-issue-103872.8LBsDz.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update the bundled copy of pip to version 23.1.2.
diff --git a/Misc/NEWS.d/next/Library/2023-04-26-09-54-25.gh-issue-103848.aDSnpR.rst b/Misc/NEWS.d/next/Library/2023-04-26-09-54-25.gh-issue-103848.aDSnpR.rst
deleted file mode 100644
index 81e5904aa6cca2..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-26-09-54-25.gh-issue-103848.aDSnpR.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add checks to ensure that ``[`` bracketed ``]`` hosts found by
-:func:`urllib.parse.urlsplit` are of IPv6 or IPvFuture format.
diff --git a/Misc/NEWS.d/next/Library/2023-04-26-15-14-36.gh-issue-103583.iCMDFt.rst b/Misc/NEWS.d/next/Library/2023-04-26-15-14-36.gh-issue-103583.iCMDFt.rst
deleted file mode 100644
index 8c92ee40831619..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-26-15-14-36.gh-issue-103583.iCMDFt.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Isolate :mod:`!_multibytecodec` and codecs extension modules. Patches by
-Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-04-26-18-12-13.gh-issue-103636.-KvCgO.rst b/Misc/NEWS.d/next/Library/2023-04-26-18-12-13.gh-issue-103636.-KvCgO.rst
deleted file mode 100644
index a05a6f5cbcdb99..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-26-18-12-13.gh-issue-103636.-KvCgO.rst
+++ /dev/null
@@ -1 +0,0 @@
-Module-level attributes ``January`` and ``February`` are deprecated from :mod:`calendar`.
diff --git a/Misc/NEWS.d/next/Library/2023-04-27-00-05-32.gh-issue-102628.X230E-.rst b/Misc/NEWS.d/next/Library/2023-04-27-00-05-32.gh-issue-102628.X230E-.rst
deleted file mode 100644
index eaaca5b41ba5e2..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-27-00-05-32.gh-issue-102628.X230E-.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Substitute CTRL-D with CTRL-Z in :mod:`sqlite3` CLI banner when running on
-Windows.
diff --git a/Misc/NEWS.d/next/Library/2023-04-27-00-45-41.gh-issue-100370.MgZ3KY.rst b/Misc/NEWS.d/next/Library/2023-04-27-00-45-41.gh-issue-100370.MgZ3KY.rst
deleted file mode 100644
index 9022d55c48cb11..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-27-00-45-41.gh-issue-100370.MgZ3KY.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix potential :exc:`OverflowError` in :meth:`sqlite3.Connection.blobopen`
-for 32-bit builds. Patch by Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Library/2023-04-27-18-46-31.gh-issue-68968.E3tnhy.rst b/Misc/NEWS.d/next/Library/2023-04-27-18-46-31.gh-issue-68968.E3tnhy.rst
deleted file mode 100644
index bf29b64793b933..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-27-18-46-31.gh-issue-68968.E3tnhy.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fixed garbled output of :meth:`~unittest.TestCase.assertEqual` when an input lacks final newline.
diff --git a/Misc/NEWS.d/next/Library/2023-04-27-20-03-08.gh-issue-103935.Uaf2M0.rst b/Misc/NEWS.d/next/Library/2023-04-27-20-03-08.gh-issue-103935.Uaf2M0.rst
deleted file mode 100644
index 71b2d87249c47b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-27-20-03-08.gh-issue-103935.Uaf2M0.rst
+++ /dev/null
@@ -1 +0,0 @@
-Use :func:`io.open_code` for files to be executed instead of raw :func:`open`
diff --git a/Misc/NEWS.d/next/Library/2023-04-28-18-04-23.gh-issue-88773.xXCNJw.rst b/Misc/NEWS.d/next/Library/2023-04-28-18-04-23.gh-issue-88773.xXCNJw.rst
deleted file mode 100644
index f14c9533f3af87..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-28-18-04-23.gh-issue-88773.xXCNJw.rst
+++ /dev/null
@@ -1 +0,0 @@
-Added :func:`turtle.teleport` to the :mod:`turtle` module to move a turtle to a new point without tracing a line, visible or invisible.  Patch by Liam Gersten.
diff --git a/Misc/NEWS.d/next/Library/2023-04-28-19-08-50.gh-issue-103977.msF70A.rst b/Misc/NEWS.d/next/Library/2023-04-28-19-08-50.gh-issue-103977.msF70A.rst
deleted file mode 100644
index ff4005774a95d2..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-04-28-19-08-50.gh-issue-103977.msF70A.rst
+++ /dev/null
@@ -1 +0,0 @@
-Improve import time of :mod:`platform` module.
diff --git a/Misc/NEWS.d/next/Library/2023-04-29-20-49-13.gh-issue-104003.-8Ruk2.rst b/Misc/NEWS.d/next/Library/2023-04-29-20-49-13.gh-issue-104003.-8Ruk2.rst
new file mode 100644
index 00000000000000..82d61ca8b8bc97
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-04-29-20-49-13.gh-issue-104003.-8Ruk2.rst
@@ -0,0 +1,3 @@
+Add :func:`warnings.deprecated`, a decorator to mark deprecated functions to
+static type checkers and to warn on usage of deprecated classes and functions.
+See :pep:`702`. Patch by Jelle Zijlstra.
diff --git a/Misc/NEWS.d/next/Library/2023-05-01-16-43-28.gh-issue-104035.MrJBw8.rst b/Misc/NEWS.d/next/Library/2023-05-01-16-43-28.gh-issue-104035.MrJBw8.rst
deleted file mode 100644
index 8c8e3d6ba5fbc1..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-01-16-43-28.gh-issue-104035.MrJBw8.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Do not ignore user-defined ``__getstate__`` and ``__setstate__`` methods for
-slotted frozen dataclasses.
diff --git a/Misc/NEWS.d/next/Library/2023-05-01-17-58-28.gh-issue-103963.XWlHx7.rst b/Misc/NEWS.d/next/Library/2023-05-01-17-58-28.gh-issue-103963.XWlHx7.rst
deleted file mode 100644
index cb06ad5d22e8a9..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-01-17-58-28.gh-issue-103963.XWlHx7.rst
+++ /dev/null
@@ -1 +0,0 @@
-Make :mod:`dis` display the names of the args for :opcode:`CALL_INTRINSIC_*`.
diff --git a/Misc/NEWS.d/next/Library/2023-05-01-19-10-05.gh-issue-103629.81bpZz.rst b/Misc/NEWS.d/next/Library/2023-05-01-19-10-05.gh-issue-103629.81bpZz.rst
deleted file mode 100644
index 7971ab66359c3d..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-01-19-10-05.gh-issue-103629.81bpZz.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update the ``repr`` of :class:`typing.Unpack` according to :pep:`692`.
diff --git a/Misc/NEWS.d/next/Library/2023-05-02-04-49-45.gh-issue-103822.m0QdAO.rst b/Misc/NEWS.d/next/Library/2023-05-02-04-49-45.gh-issue-103822.m0QdAO.rst
deleted file mode 100644
index 3daf9cc093807b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-02-04-49-45.gh-issue-103822.m0QdAO.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update the return type of ``weekday`` to the newly added Day attribute
diff --git a/Misc/NEWS.d/next/Library/2023-05-02-20-43-03.gh-issue-104102.vgSdEJ.rst b/Misc/NEWS.d/next/Library/2023-05-02-20-43-03.gh-issue-104102.vgSdEJ.rst
deleted file mode 100644
index 7101de908a5004..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-02-20-43-03.gh-issue-104102.vgSdEJ.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Improve performance of :meth:`pathlib.Path.glob` when evaluating patterns
-that contain ``'../'`` segments.
diff --git a/Misc/NEWS.d/next/Library/2023-05-02-21-05-30.gh-issue-104104.9tjplT.rst b/Misc/NEWS.d/next/Library/2023-05-02-21-05-30.gh-issue-104104.9tjplT.rst
deleted file mode 100644
index 935a0e2a2bff18..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-02-21-05-30.gh-issue-104104.9tjplT.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Improve performance of :meth:`pathlib.Path.glob` by using
-:data:`re.IGNORECASE` to implement case-insensitive matching.
diff --git a/Misc/NEWS.d/next/Library/2023-05-03-03-14-33.gh-issue-104114.RG26RD.rst b/Misc/NEWS.d/next/Library/2023-05-03-03-14-33.gh-issue-104114.RG26RD.rst
deleted file mode 100644
index e705fea8326e7a..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-03-03-14-33.gh-issue-104114.RG26RD.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Fix issue where :meth:`pathlib.Path.glob` returns paths using the case of
-non-wildcard segments for corresponding path segments, rather than the real
-filesystem case.
diff --git a/Misc/NEWS.d/next/Library/2023-05-03-16-50-24.gh-issue-104144.yNkjL8.rst b/Misc/NEWS.d/next/Library/2023-05-03-16-50-24.gh-issue-104144.yNkjL8.rst
deleted file mode 100644
index b975d48ed3385c..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-03-16-50-24.gh-issue-104144.yNkjL8.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Optimize :func:`asyncio.gather` when using :func:`asyncio.eager_task_factory`
-to complete eagerly if all fututres completed eagerly.
-Avoid scheduling done callbacks for futures that complete eagerly.
diff --git a/Misc/NEWS.d/next/Library/2023-05-03-16-51-53.gh-issue-104144.653Q0P.rst b/Misc/NEWS.d/next/Library/2023-05-03-16-51-53.gh-issue-104144.653Q0P.rst
deleted file mode 100644
index ced3b7cea04954..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-03-16-51-53.gh-issue-104144.653Q0P.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Optimize :class:`asyncio.TaskGroup` when using :func:`asyncio.eager_task_factory`.
-Skip scheduling a done callback if a TaskGroup task completes eagerly.
diff --git a/Misc/NEWS.d/next/Library/2023-05-03-19-22-24.gh-issue-90208.tI00da.rst b/Misc/NEWS.d/next/Library/2023-05-03-19-22-24.gh-issue-90208.tI00da.rst
deleted file mode 100644
index 1fd9588bebd5d8..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-03-19-22-24.gh-issue-90208.tI00da.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Fixed issue where :meth:`pathlib.Path.glob` returned incomplete results when
-it encountered a :exc:`PermissionError`. This method now suppresses all
-:exc:`OSError` exceptions, except those raised from calling
-:meth:`~pathlib.Path.is_dir` on the top-level path.
diff --git a/Misc/NEWS.d/next/Library/2023-05-05-18-52-22.gh-issue-65772.w5P5Wv.rst b/Misc/NEWS.d/next/Library/2023-05-05-18-52-22.gh-issue-65772.w5P5Wv.rst
deleted file mode 100644
index 54b0190192863c..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-05-18-52-22.gh-issue-65772.w5P5Wv.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove unneeded comments and code in turtle.py.
diff --git a/Misc/NEWS.d/next/Library/2023-05-06-20-37-46.gh-issue-102613.QZG9iX.rst b/Misc/NEWS.d/next/Library/2023-05-06-20-37-46.gh-issue-102613.QZG9iX.rst
deleted file mode 100644
index 01f8b948d2cb65..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-06-20-37-46.gh-issue-102613.QZG9iX.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Improve performance of :meth:`pathlib.Path.glob` when expanding recursive
-wildcards ("``**``") by merging adjacent wildcards and de-duplicating
-results only when necessary.
diff --git a/Misc/NEWS.d/next/Library/2023-05-07-19-56-45.gh-issue-104265.fVblry.rst b/Misc/NEWS.d/next/Library/2023-05-07-19-56-45.gh-issue-104265.fVblry.rst
deleted file mode 100644
index 9c582844bf909b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-07-19-56-45.gh-issue-104265.fVblry.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Prevent possible crash by disallowing instantiation of the
-:class:`!_csv.Reader` and :class:`!_csv.Writer` types.
-The regression was introduced in 3.10.0a4 with PR 23224 (:issue:`14935`).
-Patch by Radislav Chugunov.
diff --git a/Misc/NEWS.d/next/Library/2023-05-08-15-39-00.gh-issue-87695.f6iO7v.rst b/Misc/NEWS.d/next/Library/2023-05-08-15-39-00.gh-issue-87695.f6iO7v.rst
deleted file mode 100644
index 7b677656bea308..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-08-15-39-00.gh-issue-87695.f6iO7v.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix issue where :meth:`pathlib.Path.glob` raised :exc:`OSError` when it
-encountered a symlink to an overly long path.
diff --git a/Misc/NEWS.d/next/Library/2023-05-08-15-50-59.gh-issue-104310.fXVSPY.rst b/Misc/NEWS.d/next/Library/2023-05-08-15-50-59.gh-issue-104310.fXVSPY.rst
deleted file mode 100644
index 3743d569995f2e..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-08-15-50-59.gh-issue-104310.fXVSPY.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Users may now use ``importlib.util.allowing_all_extensions()`` (a context
-manager) to temporarily disable the strict compatibility checks for
-importing extension modules in subinterpreters.
diff --git a/Misc/NEWS.d/next/Library/2023-05-08-20-57-17.gh-issue-104307.DSB93G.rst b/Misc/NEWS.d/next/Library/2023-05-08-20-57-17.gh-issue-104307.DSB93G.rst
deleted file mode 100644
index 03775845450caa..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-08-20-57-17.gh-issue-104307.DSB93G.rst
+++ /dev/null
@@ -1 +0,0 @@
-:func:`socket.getnameinfo` now releases the GIL while contacting the DNS server
diff --git a/Misc/NEWS.d/next/Library/2023-05-08-23-01-59.gh-issue-104139.83Tnt-.rst b/Misc/NEWS.d/next/Library/2023-05-08-23-01-59.gh-issue-104139.83Tnt-.rst
deleted file mode 100644
index 145e75f6dea6f4..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-08-23-01-59.gh-issue-104139.83Tnt-.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Teach :func:`urllib.parse.unsplit` to retain the ``"//"`` when assembling
-``itms-services://?action=generate-bugs`` style `Apple Platform Deployment
-<https://support.apple.com/en-gb/guide/deployment/depce7cefc4d/web>`_ URLs.
diff --git a/Misc/NEWS.d/next/Library/2023-05-09-18-46-24.gh-issue-104301.gNnbId.rst b/Misc/NEWS.d/next/Library/2023-05-09-18-46-24.gh-issue-104301.gNnbId.rst
deleted file mode 100644
index a44ad765e62458..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-09-18-46-24.gh-issue-104301.gNnbId.rst
+++ /dev/null
@@ -1 +0,0 @@
-Allow leading whitespace in disambiguated statements in :mod:`pdb`.
diff --git a/Misc/NEWS.d/next/Library/2023-05-10-19-33-36.gh-issue-103000.j0KSfD.rst b/Misc/NEWS.d/next/Library/2023-05-10-19-33-36.gh-issue-103000.j0KSfD.rst
deleted file mode 100644
index f84ec5c8b3caf6..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-10-19-33-36.gh-issue-103000.j0KSfD.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Improve performance of :func:`dataclasses.asdict` for the common case where
-*dict_factory* is ``dict``. Patch by David C Ellis.
diff --git a/Misc/NEWS.d/next/Library/2023-05-11-07-50-00.gh-issue-104392.YSllzt.rst b/Misc/NEWS.d/next/Library/2023-05-11-07-50-00.gh-issue-104392.YSllzt.rst
deleted file mode 100644
index b441b2acd19f1b..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-11-07-50-00.gh-issue-104392.YSllzt.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Remove undocumented and unused ``_paramspec_tvars`` attribute from some
-classes in :mod:`typing`.
diff --git a/Misc/NEWS.d/next/Library/2023-05-12-19-29-28.gh-issue-103857.0IzSxr.rst b/Misc/NEWS.d/next/Library/2023-05-12-19-29-28.gh-issue-103857.0IzSxr.rst
deleted file mode 100644
index 6e8162d9ecc286..00000000000000
--- a/Misc/NEWS.d/next/Library/2023-05-12-19-29-28.gh-issue-103857.0IzSxr.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update datetime deprecations' stracktrace to point to the calling line
diff --git a/Misc/NEWS.d/next/Library/2023-08-07-21-11-24.gh-issue-102130._UyI5i.rst b/Misc/NEWS.d/next/Library/2023-08-07-21-11-24.gh-issue-102130._UyI5i.rst
new file mode 100644
index 00000000000000..f582ad5df39e84
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-08-07-21-11-24.gh-issue-102130._UyI5i.rst
@@ -0,0 +1 @@
+Support tab completion in :mod:`cmd` for ``editline``.
diff --git a/Misc/NEWS.d/next/Library/2023-08-14-21-10-52.gh-issue-103363.u64_QI.rst b/Misc/NEWS.d/next/Library/2023-08-14-21-10-52.gh-issue-103363.u64_QI.rst
new file mode 100644
index 00000000000000..d4a27d624eb5e6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-08-14-21-10-52.gh-issue-103363.u64_QI.rst
@@ -0,0 +1,2 @@
+Add *follow_symlinks* keyword-only argument to :meth:`pathlib.Path.owner`
+and :meth:`~pathlib.Path.group`, defaulting to ``True``.
diff --git a/Misc/NEWS.d/next/Library/2023-09-23-14-40-51.gh-issue-109786.UX3pKv.rst b/Misc/NEWS.d/next/Library/2023-09-23-14-40-51.gh-issue-109786.UX3pKv.rst
new file mode 100644
index 00000000000000..07222fa339d703
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-09-23-14-40-51.gh-issue-109786.UX3pKv.rst
@@ -0,0 +1,2 @@
+Fix possible reference leaks and crash when re-enter the ``__next__()`` method of
+:class:`itertools.pairwise`.
diff --git a/Misc/NEWS.d/next/Library/2023-10-11-02-34-01.gh-issue-110109.RFCmHs.rst b/Misc/NEWS.d/next/Library/2023-10-11-02-34-01.gh-issue-110109.RFCmHs.rst
new file mode 100644
index 00000000000000..4f12d128f49fb3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-11-02-34-01.gh-issue-110109.RFCmHs.rst
@@ -0,0 +1,3 @@
+Add private ``pathlib._PurePathBase`` class: a base class for
+:class:`pathlib.PurePath` that omits certain magic methods. It may be made
+public (along with ``_PathBase``) in future.
diff --git a/Misc/NEWS.d/next/Library/2023-10-12-18-19-47.gh-issue-82300.P8-O38.rst b/Misc/NEWS.d/next/Library/2023-10-12-18-19-47.gh-issue-82300.P8-O38.rst
new file mode 100644
index 00000000000000..d7e6b225489b99
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-12-18-19-47.gh-issue-82300.P8-O38.rst
@@ -0,0 +1 @@
+Add ``track`` parameter to :class:`multiprocessing.shared_memory.SharedMemory` that allows using shared memory blocks without having to register with the POSIX resource tracker that automatically releases them upon process exit.
diff --git a/Misc/NEWS.d/next/Library/2023-10-23-03-49-34.gh-issue-102980.aXBd54.rst b/Misc/NEWS.d/next/Library/2023-10-23-03-49-34.gh-issue-102980.aXBd54.rst
new file mode 100644
index 00000000000000..d4bae4790d6fa4
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-23-03-49-34.gh-issue-102980.aXBd54.rst
@@ -0,0 +1 @@
+Redirect the output of ``interact`` command of :mod:`pdb` to the same channel as the debugger. Add tests and improve docs.
diff --git a/Misc/NEWS.d/next/Library/2023-10-25-16-37-13.gh-issue-75666.BpsWut.rst b/Misc/NEWS.d/next/Library/2023-10-25-16-37-13.gh-issue-75666.BpsWut.rst
new file mode 100644
index 00000000000000..d774cc4f7c687f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-25-16-37-13.gh-issue-75666.BpsWut.rst
@@ -0,0 +1,6 @@
+Fix the behavior of :mod:`tkinter` widget's ``unbind()`` method with two
+arguments. Previously, ``widget.unbind(sequence, funcid)`` destroyed the
+current binding for *sequence*, leaving *sequence* unbound, and deleted the
+*funcid* command. Now it removes only *funcid* from the binding for
+*sequence*, keeping other commands, and deletes the *funcid* command. It
+leaves *sequence* unbound only if *funcid* was the last bound command.
diff --git a/Misc/NEWS.d/next/Library/2023-11-05-20-09-27.gh-issue-99367.HLaWKo.rst b/Misc/NEWS.d/next/Library/2023-11-05-20-09-27.gh-issue-99367.HLaWKo.rst
new file mode 100644
index 00000000000000..0920da221e423f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-05-20-09-27.gh-issue-99367.HLaWKo.rst
@@ -0,0 +1 @@
+Do not mangle ``sys.path[0]`` in :mod:`pdb` if safe_path is set
diff --git a/Misc/NEWS.d/next/Library/2023-11-08-16-11-04.gh-issue-110275.Bm6GwR.rst b/Misc/NEWS.d/next/Library/2023-11-08-16-11-04.gh-issue-110275.Bm6GwR.rst
new file mode 100644
index 00000000000000..194dd5cb623f0f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-08-16-11-04.gh-issue-110275.Bm6GwR.rst
@@ -0,0 +1,2 @@
+Named tuple's methods ``_replace()`` and ``__replace__()`` now raise
+TypeError instead of ValueError for invalid keyword arguments.
diff --git a/Misc/NEWS.d/next/Library/2023-11-08-18-53-07.gh-issue-68166.1iTh4Y.rst b/Misc/NEWS.d/next/Library/2023-11-08-18-53-07.gh-issue-68166.1iTh4Y.rst
new file mode 100644
index 00000000000000..30379b8fa1afaf
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-08-18-53-07.gh-issue-68166.1iTh4Y.rst
@@ -0,0 +1,2 @@
+Add support of the "vsapi" element type in
+:meth:`tkinter.ttk.Style.element_create`.
diff --git a/Misc/NEWS.d/next/Library/2023-11-09-11-07-34.gh-issue-111874.dzYc3j.rst b/Misc/NEWS.d/next/Library/2023-11-09-11-07-34.gh-issue-111874.dzYc3j.rst
new file mode 100644
index 00000000000000..50408202a7a5a1
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-09-11-07-34.gh-issue-111874.dzYc3j.rst
@@ -0,0 +1,4 @@
+When creating a :class:`typing.NamedTuple` class, ensure
+:func:`~object.__set_name__` is called on all objects that define
+``__set_name__`` and exist in the values of the ``NamedTuple`` class's class
+dictionary. Patch by Alex Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-11-15-01-36-04.gh-issue-106922.qslOVH.rst b/Misc/NEWS.d/next/Library/2023-11-15-01-36-04.gh-issue-106922.qslOVH.rst
new file mode 100644
index 00000000000000..b68e75ab87cd0b
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-15-01-36-04.gh-issue-106922.qslOVH.rst
@@ -0,0 +1 @@
+Display multiple lines with ``traceback`` when errors span multiple lines.
diff --git a/Misc/NEWS.d/next/Library/2023-11-15-04-53-37.gh-issue-112105.I3RcVN.rst b/Misc/NEWS.d/next/Library/2023-11-15-04-53-37.gh-issue-112105.I3RcVN.rst
new file mode 100644
index 00000000000000..4243dcb190434f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-15-04-53-37.gh-issue-112105.I3RcVN.rst
@@ -0,0 +1 @@
+Make :func:`readline.set_completer_delims` work with libedit
diff --git a/Misc/NEWS.d/next/Library/2023-11-16-10-42-15.gh-issue-112139.WpHosf.rst b/Misc/NEWS.d/next/Library/2023-11-16-10-42-15.gh-issue-112139.WpHosf.rst
new file mode 100644
index 00000000000000..090dc8847d9556
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-16-10-42-15.gh-issue-112139.WpHosf.rst
@@ -0,0 +1,3 @@
+Add :meth:`Signature.format` to format signatures to string with extra options.
+And use it in :mod:`pydoc` to render more readable signatures that have new
+lines between parameters.
diff --git a/Misc/NEWS.d/next/Library/2023-11-16-17-18-09.gh-issue-112137.QvjGjN.rst b/Misc/NEWS.d/next/Library/2023-11-16-17-18-09.gh-issue-112137.QvjGjN.rst
new file mode 100644
index 00000000000000..6b61d051966846
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-16-17-18-09.gh-issue-112137.QvjGjN.rst
@@ -0,0 +1 @@
+Change :mod:`dis` output to display logical labels for jump targets instead of offsets.
diff --git a/Misc/NEWS.d/next/Library/2023-11-21-02-58-14.gh-issue-77621.MYv5XS.rst b/Misc/NEWS.d/next/Library/2023-11-21-02-58-14.gh-issue-77621.MYv5XS.rst
new file mode 100644
index 00000000000000..f3e6efc389afca
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-21-02-58-14.gh-issue-77621.MYv5XS.rst
@@ -0,0 +1,2 @@
+Slightly improve the import time of the :mod:`pathlib` module by deferring
+some imports. Patch by Barney Gale.
diff --git a/Misc/NEWS.d/next/Library/2023-11-22-19-43-54.gh-issue-112292.5nDU87.rst b/Misc/NEWS.d/next/Library/2023-11-22-19-43-54.gh-issue-112292.5nDU87.rst
new file mode 100644
index 00000000000000..8345e33791cde0
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-22-19-43-54.gh-issue-112292.5nDU87.rst
@@ -0,0 +1,2 @@
+Fix a crash in :mod:`readline` when imported from a sub interpreter. Patch
+by Anthony Shaw
diff --git a/Misc/NEWS.d/next/Library/2023-11-22-23-08-47.gh-issue-81620.mfZ2Wf.rst b/Misc/NEWS.d/next/Library/2023-11-22-23-08-47.gh-issue-81620.mfZ2Wf.rst
new file mode 100644
index 00000000000000..ff35806e4d5ed6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-22-23-08-47.gh-issue-81620.mfZ2Wf.rst
@@ -0,0 +1 @@
+Add extra tests for :func:`random.binomialvariate`
diff --git a/Misc/NEWS.d/next/Library/2023-11-23-10-41-21.gh-issue-112332.rhTBaa.rst b/Misc/NEWS.d/next/Library/2023-11-23-10-41-21.gh-issue-112332.rhTBaa.rst
new file mode 100644
index 00000000000000..bd686ad052e5b2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-23-10-41-21.gh-issue-112332.rhTBaa.rst
@@ -0,0 +1,2 @@
+Deprecate the ``exc_type`` field of :class:`traceback.TracebackException`.
+Add ``exc_type_str`` to replace it.
diff --git a/Misc/NEWS.d/next/Library/2023-11-23-12-37-22.gh-issue-112137.kM46Q6.rst b/Misc/NEWS.d/next/Library/2023-11-23-12-37-22.gh-issue-112137.kM46Q6.rst
new file mode 100644
index 00000000000000..1b2e41ae96ff09
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-23-12-37-22.gh-issue-112137.kM46Q6.rst
@@ -0,0 +1 @@
+Change :mod:`dis` output to display no-lineno as "--" instead of "None".
diff --git a/Misc/NEWS.d/next/Library/2023-11-23-17-25-27.gh-issue-112345.FFApHx.rst b/Misc/NEWS.d/next/Library/2023-11-23-17-25-27.gh-issue-112345.FFApHx.rst
new file mode 100644
index 00000000000000..b2b9894e6bef3a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-23-17-25-27.gh-issue-112345.FFApHx.rst
@@ -0,0 +1,3 @@
+Improve error message when trying to call :func:`issubclass` against a
+:class:`typing.Protocol` that has non-method members.
+Patch by Randolf Scholz.
diff --git a/Misc/NEWS.d/next/Library/2023-11-24-09-27-01.gh-issue-112361.kYtnHW.rst b/Misc/NEWS.d/next/Library/2023-11-24-09-27-01.gh-issue-112361.kYtnHW.rst
new file mode 100644
index 00000000000000..5a83f93f9fbec8
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-24-09-27-01.gh-issue-112361.kYtnHW.rst
@@ -0,0 +1,2 @@
+Speed up a small handful of :mod:`pathlib` methods by removing some
+temporary objects.
diff --git a/Misc/NEWS.d/next/Library/2023-11-24-21-00-24.gh-issue-94722.GMIQIn.rst b/Misc/NEWS.d/next/Library/2023-11-24-21-00-24.gh-issue-94722.GMIQIn.rst
new file mode 100644
index 00000000000000..41bd57f46ed82a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-24-21-00-24.gh-issue-94722.GMIQIn.rst
@@ -0,0 +1,2 @@
+Fix bug where comparison between instances of :class:`~doctest.DocTest` fails if
+one of them has ``None`` as its lineno.
diff --git a/Misc/NEWS.d/next/Library/2023-11-25-20-29-28.gh-issue-112405.cOtzxC.rst b/Misc/NEWS.d/next/Library/2023-11-25-20-29-28.gh-issue-112405.cOtzxC.rst
new file mode 100644
index 00000000000000..f6f1bee2a0c38f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-25-20-29-28.gh-issue-112405.cOtzxC.rst
@@ -0,0 +1 @@
+Optimize :meth:`pathlib.PurePath.relative_to`. Patch by Alex Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-11-26-13-26-56.gh-issue-112358.smhaeZ.rst b/Misc/NEWS.d/next/Library/2023-11-26-13-26-56.gh-issue-112358.smhaeZ.rst
new file mode 100644
index 00000000000000..e473ded46a1309
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-26-13-26-56.gh-issue-112358.smhaeZ.rst
@@ -0,0 +1,2 @@
+Revert change to :class:`struct.Struct` initialization that broke some cases
+of subclassing.
diff --git a/Misc/NEWS.d/next/Library/2023-11-26-13-44-19.gh-issue-112414.kx2E7S.rst b/Misc/NEWS.d/next/Library/2023-11-26-13-44-19.gh-issue-112414.kx2E7S.rst
new file mode 100644
index 00000000000000..058e5a33227e5a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-26-13-44-19.gh-issue-112414.kx2E7S.rst
@@ -0,0 +1,3 @@
+Fix regression in Python 3.12 where calling :func:`repr` on a module that
+had been imported using a custom :term:`loader` could fail with
+:exc:`AttributeError`. Patch by Alex Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-11-27-12-41-23.gh-issue-63284.q2Qi9q.rst b/Misc/NEWS.d/next/Library/2023-11-27-12-41-23.gh-issue-63284.q2Qi9q.rst
new file mode 100644
index 00000000000000..abb57dccd5a91a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-27-12-41-23.gh-issue-63284.q2Qi9q.rst
@@ -0,0 +1 @@
+Added support for TLS-PSK (pre-shared key) mode to the :mod:`ssl` module.
diff --git a/Misc/NEWS.d/next/Library/2023-11-28-20-01-33.gh-issue-112509.QtoKed.rst b/Misc/NEWS.d/next/Library/2023-11-28-20-01-33.gh-issue-112509.QtoKed.rst
new file mode 100644
index 00000000000000..a16d67e7776bcb
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-28-20-01-33.gh-issue-112509.QtoKed.rst
@@ -0,0 +1,3 @@
+Fix edge cases that could cause a key to be present in both the
+``__required_keys__`` and ``__optional_keys__`` attributes of a
+:class:`typing.TypedDict`. Patch by Jelle Zijlstra.
diff --git a/Misc/NEWS.d/next/Library/2023-11-28-20-47-39.gh-issue-112328.Z2AxEY.rst b/Misc/NEWS.d/next/Library/2023-11-28-20-47-39.gh-issue-112328.Z2AxEY.rst
new file mode 100644
index 00000000000000..6e6902486b7bc9
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-28-20-47-39.gh-issue-112328.Z2AxEY.rst
@@ -0,0 +1,2 @@
+[Enum] Make ``EnumDict``, ``EnumDict.member_names``,
+``EnumType._add_alias_`` and ``EnumType._add_value_alias_`` public.
diff --git a/Misc/NEWS.d/next/Library/2023-11-29-02-26-32.gh-issue-112510.j-zXGc.rst b/Misc/NEWS.d/next/Library/2023-11-29-02-26-32.gh-issue-112510.j-zXGc.rst
new file mode 100644
index 00000000000000..02de6fa80c1b3e
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-29-02-26-32.gh-issue-112510.j-zXGc.rst
@@ -0,0 +1 @@
+Add :data:`readline.backend` for the backend readline uses (``editline`` or ``readline``)
diff --git a/Misc/NEWS.d/next/Library/2023-11-29-10-51-41.gh-issue-112516.rFKUKN.rst b/Misc/NEWS.d/next/Library/2023-11-29-10-51-41.gh-issue-112516.rFKUKN.rst
new file mode 100644
index 00000000000000..530cf992dcd77a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-29-10-51-41.gh-issue-112516.rFKUKN.rst
@@ -0,0 +1 @@
+Update the bundled copy of pip to version 23.3.1.
diff --git a/Misc/NEWS.d/next/Library/2023-12-01-08-28-09.gh-issue-112578.bfNbfi.rst b/Misc/NEWS.d/next/Library/2023-12-01-08-28-09.gh-issue-112578.bfNbfi.rst
new file mode 100644
index 00000000000000..1de5b1fe26ce6d
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-01-08-28-09.gh-issue-112578.bfNbfi.rst
@@ -0,0 +1 @@
+Fix a spurious :exc:`RuntimeWarning` when executing the :mod:`zipfile` module.
diff --git a/Misc/NEWS.d/next/Library/2023-12-01-16-09-59.gh-issue-81194.FFad1c.rst b/Misc/NEWS.d/next/Library/2023-12-01-16-09-59.gh-issue-81194.FFad1c.rst
new file mode 100644
index 00000000000000..feb7a8643b97f6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-01-16-09-59.gh-issue-81194.FFad1c.rst
@@ -0,0 +1,3 @@
+Fix a crash in :func:`socket.if_indextoname` with specific value (UINT_MAX).
+Fix an integer overflow in :func:`socket.if_indextoname` on 64-bit
+non-Windows platforms.
diff --git a/Misc/NEWS.d/next/Library/2023-12-01-18-05-09.gh-issue-110190.5bf-c9.rst b/Misc/NEWS.d/next/Library/2023-12-01-18-05-09.gh-issue-110190.5bf-c9.rst
new file mode 100644
index 00000000000000..730b9d49119805
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-01-18-05-09.gh-issue-110190.5bf-c9.rst
@@ -0,0 +1 @@
+Fix ctypes structs with array on Arm platform by setting ``MAX_STRUCT_SIZE`` to 32 in stgdict. Patch by Diego Russo.
diff --git a/Misc/NEWS.d/next/Library/2023-12-01-21-05-46.gh-issue-112334.DmNXKh.rst b/Misc/NEWS.d/next/Library/2023-12-01-21-05-46.gh-issue-112334.DmNXKh.rst
new file mode 100644
index 00000000000000..3a53a8bf84230f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-01-21-05-46.gh-issue-112334.DmNXKh.rst
@@ -0,0 +1,11 @@
+Fixed a performance regression in 3.12's :mod:`subprocess` on Linux where it
+would no longer use the fast-path ``vfork()`` system call when it could have
+due to a logic bug, instead falling back to the safe but slower ``fork()``.
+
+Also fixed a second 3.12.0 potential security bug.  If a value of
+``extra_groups=[]`` was passed to :mod:`subprocess.Popen` or related APIs,
+the underlying ``setgroups(0, NULL)`` system call to clear the groups list
+would not be made in the child process prior to ``exec()``.
+
+This was identified via code inspection in the process of fixing the first
+bug.
diff --git a/Misc/NEWS.d/next/Library/2023-12-02-12-55-17.gh-issue-112618.7_FT8-.rst b/Misc/NEWS.d/next/Library/2023-12-02-12-55-17.gh-issue-112618.7_FT8-.rst
new file mode 100644
index 00000000000000..c732de15609c96
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-02-12-55-17.gh-issue-112618.7_FT8-.rst
@@ -0,0 +1,2 @@
+Fix a caching bug relating to :data:`typing.Annotated`.
+``Annotated[str, True]`` is no longer identical to ``Annotated[str, 1]``.
diff --git a/Misc/NEWS.d/next/Library/2023-12-03-12-41-48.gh-issue-112645.blMsKf.rst b/Misc/NEWS.d/next/Library/2023-12-03-12-41-48.gh-issue-112645.blMsKf.rst
new file mode 100644
index 00000000000000..4e8f6ebdb882e0
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-03-12-41-48.gh-issue-112645.blMsKf.rst
@@ -0,0 +1 @@
+Remove deprecation error on passing ``onerror`` to :func:`shutil.rmtree`.
diff --git a/Misc/NEWS.d/next/Library/2023-12-04-14-05-24.gh-issue-74690.eODKRm.rst b/Misc/NEWS.d/next/Library/2023-12-04-14-05-24.gh-issue-74690.eODKRm.rst
new file mode 100644
index 00000000000000..36d793f787302e
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-04-14-05-24.gh-issue-74690.eODKRm.rst
@@ -0,0 +1,5 @@
+Speedup :func:`isinstance` checks by roughly 20% for
+:func:`runtime-checkable protocols <typing.runtime_checkable>`
+that only have one callable member.
+Speedup :func:`issubclass` checks for these protocols by roughly 10%.
+Patch by Alex Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-12-04-16-45-11.gh-issue-74690.pQYP5U.rst b/Misc/NEWS.d/next/Library/2023-12-04-16-45-11.gh-issue-74690.pQYP5U.rst
new file mode 100644
index 00000000000000..8102f02e941c29
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-04-16-45-11.gh-issue-74690.pQYP5U.rst
@@ -0,0 +1,2 @@
+Speedup :func:`issubclass` checks against simple :func:`runtime-checkable
+protocols <typing.runtime_checkable>` by around 6%. Patch by Alex Waygood.
diff --git a/Misc/NEWS.d/next/Library/2023-12-04-21-30-34.gh-issue-112727.jpgNRB.rst b/Misc/NEWS.d/next/Library/2023-12-04-21-30-34.gh-issue-112727.jpgNRB.rst
new file mode 100644
index 00000000000000..bbe7aae5732d9a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-04-21-30-34.gh-issue-112727.jpgNRB.rst
@@ -0,0 +1 @@
+Speed up :meth:`pathlib.Path.absolute`. Patch by Barney Gale.
diff --git a/Misc/NEWS.d/next/Library/2023-12-05-01-19-28.gh-issue-112736.rdHDrU.rst b/Misc/NEWS.d/next/Library/2023-12-05-01-19-28.gh-issue-112736.rdHDrU.rst
new file mode 100644
index 00000000000000..6c09e622923af8
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-05-01-19-28.gh-issue-112736.rdHDrU.rst
@@ -0,0 +1 @@
+The use of del-safe symbols in ``subprocess`` was refactored to allow for use in cross-platform build environments.
diff --git a/Misc/NEWS.d/next/Library/2023-12-05-16-20-40.gh-issue-94692.-e5C3c.rst b/Misc/NEWS.d/next/Library/2023-12-05-16-20-40.gh-issue-94692.-e5C3c.rst
new file mode 100644
index 00000000000000..c67ba6c9ececdb
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-05-16-20-40.gh-issue-94692.-e5C3c.rst
@@ -0,0 +1,4 @@
+:func:`shutil.rmtree` now only catches OSError exceptions. Previously a
+symlink attack resistant version of ``shutil.rmtree()`` could ignore or pass
+to the error handler arbitrary exception when invalid arguments were
+provided.
diff --git a/Misc/NEWS.d/next/Library/2023-12-05-18-57-53.gh-issue-79325.P2vMVK.rst b/Misc/NEWS.d/next/Library/2023-12-05-18-57-53.gh-issue-79325.P2vMVK.rst
new file mode 100644
index 00000000000000..f3c32d27b5fe66
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-05-18-57-53.gh-issue-79325.P2vMVK.rst
@@ -0,0 +1,2 @@
+Fix an infinite recursion error in :func:`tempfile.TemporaryDirectory`
+cleanup on Windows.
diff --git a/Misc/NEWS.d/next/Library/2023-12-06-14-06-14.gh-issue-51944.-5qq_L.rst b/Misc/NEWS.d/next/Library/2023-12-06-14-06-14.gh-issue-51944.-5qq_L.rst
new file mode 100644
index 00000000000000..821eefa7cffcd5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-06-14-06-14.gh-issue-51944.-5qq_L.rst
@@ -0,0 +1,6 @@
+Add the following constants to the :mod:`termios` module. These values are
+present in macOS system headers: ``ALTWERASE``, ``B14400``, ``B28800``,
+``B7200``, ``B76800``, ``CCAR_OFLOW``, ``CCTS_OFLOW``, ``CDSR_OFLOW``,
+``CDTR_IFLOW``, ``CIGNORE``, ``CRTS_IFLOW``, ``EXTPROC``, ``IUTF8``,
+``MDMBUF``, ``NL2``, ``NL3``, ``NOKERNINFO``, ``ONOEOT``, ``OXTABS``,
+``VDSUSP``, ``VSTATUS``.
diff --git a/Misc/NEWS.d/next/Library/2023-12-08-11-17-17.gh-issue-112540.Pm5egX.rst b/Misc/NEWS.d/next/Library/2023-12-08-11-17-17.gh-issue-112540.Pm5egX.rst
new file mode 100644
index 00000000000000..263b13d1762bf1
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-12-08-11-17-17.gh-issue-112540.Pm5egX.rst
@@ -0,0 +1,2 @@
+The statistics.geometric_mean() function now returns zero for datasets
+containing a zero.  Formerly, it would raise an exception.
diff --git a/Misc/NEWS.d/next/Security/2023-04-17-14-38-12.gh-issue-99108.720lG8.rst b/Misc/NEWS.d/next/Security/2023-04-17-14-38-12.gh-issue-99108.720lG8.rst
deleted file mode 100644
index f259acf753831c..00000000000000
--- a/Misc/NEWS.d/next/Security/2023-04-17-14-38-12.gh-issue-99108.720lG8.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Upgrade built-in :mod:`hashlib` SHA3 implementation to a verified implementation
-from the ``HACL*`` project.  Used when OpenSSL is not present or lacks SHA3.
diff --git a/Misc/NEWS.d/next/Security/2023-05-01-15-03-25.gh-issue-104049.b01Y3g.rst b/Misc/NEWS.d/next/Security/2023-05-01-15-03-25.gh-issue-104049.b01Y3g.rst
deleted file mode 100644
index 969deb26bfeb95..00000000000000
--- a/Misc/NEWS.d/next/Security/2023-05-01-15-03-25.gh-issue-104049.b01Y3g.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Do not expose the local on-disk location in directory indexes
-produced by :class:`http.client.SimpleHTTPRequestHandler`.
diff --git a/Misc/NEWS.d/next/Security/2023-05-02-17-56-32.gh-issue-99889.l664SU.rst b/Misc/NEWS.d/next/Security/2023-05-02-17-56-32.gh-issue-99889.l664SU.rst
deleted file mode 100644
index b7002e81b6b677..00000000000000
--- a/Misc/NEWS.d/next/Security/2023-05-02-17-56-32.gh-issue-99889.l664SU.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fixed a security in flaw in :func:`uu.decode` that could allow for
-directory traversal based on the input if no ``out_file`` was specified.
diff --git a/Misc/NEWS.d/next/Security/2023-12-06-14-06-59.gh-issue-112302.3bl20f.rst b/Misc/NEWS.d/next/Security/2023-12-06-14-06-59.gh-issue-112302.3bl20f.rst
new file mode 100644
index 00000000000000..65e4dc3762d3c0
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2023-12-06-14-06-59.gh-issue-112302.3bl20f.rst
@@ -0,0 +1,2 @@
+Created a Software Bill-of-Materials document and tooling for tracking
+dependencies.
diff --git a/Misc/NEWS.d/next/Tests/2022-11-06-18-42-38.gh-issue-75729.uGYJrv.rst b/Misc/NEWS.d/next/Tests/2022-11-06-18-42-38.gh-issue-75729.uGYJrv.rst
deleted file mode 100644
index 8baecdfc31881f..00000000000000
--- a/Misc/NEWS.d/next/Tests/2022-11-06-18-42-38.gh-issue-75729.uGYJrv.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix the :func:`os.spawn* <os.spawnl>` tests failing on Windows
-when the working directory or interpreter path contains spaces.
diff --git a/Misc/NEWS.d/next/Tests/2023-03-17-22-00-47.gh-issue-102795.z21EoC.rst b/Misc/NEWS.d/next/Tests/2023-03-17-22-00-47.gh-issue-102795.z21EoC.rst
deleted file mode 100644
index fe2afff91ece7a..00000000000000
--- a/Misc/NEWS.d/next/Tests/2023-03-17-22-00-47.gh-issue-102795.z21EoC.rst
+++ /dev/null
@@ -1 +0,0 @@
-fix use of poll in test_epoll's test_control_and_wait
diff --git a/Misc/NEWS.d/next/Tests/2023-04-08-00-50-23.gh-issue-103329.M38tqF.rst b/Misc/NEWS.d/next/Tests/2023-04-08-00-50-23.gh-issue-103329.M38tqF.rst
deleted file mode 100644
index 79448ed728040d..00000000000000
--- a/Misc/NEWS.d/next/Tests/2023-04-08-00-50-23.gh-issue-103329.M38tqF.rst
+++ /dev/null
@@ -1 +0,0 @@
-Regression tests for the behaviour of ``unittest.mock.PropertyMock`` were added.
diff --git a/Misc/NEWS.d/next/Tests/2023-04-25-12-19-37.gh-issue-86275.-RoLIt.rst b/Misc/NEWS.d/next/Tests/2023-04-25-12-19-37.gh-issue-86275.-RoLIt.rst
deleted file mode 100644
index 37ab74ffc441ed..00000000000000
--- a/Misc/NEWS.d/next/Tests/2023-04-25-12-19-37.gh-issue-86275.-RoLIt.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Added property-based tests to the :mod:`zoneinfo` tests, along with stubs
-for the ``hypothesis`` interface. (Patch by Paul Ganssle)
diff --git a/Misc/NEWS.d/next/Tests/2023-05-15-02-22-44.gh-issue-104494.Bkrbfn.rst b/Misc/NEWS.d/next/Tests/2023-05-15-02-22-44.gh-issue-104494.Bkrbfn.rst
deleted file mode 100644
index a320c48428b58b..00000000000000
--- a/Misc/NEWS.d/next/Tests/2023-05-15-02-22-44.gh-issue-104494.Bkrbfn.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Update ``test_pack_configure_in`` and ``test_place_configure_in``
-for changes to error message formatting in Tk 8.7.
diff --git a/Misc/NEWS.d/next/Tests/2023-09-05-20-46-35.gh-issue-108927.TpwWav.rst b/Misc/NEWS.d/next/Tests/2023-09-05-20-46-35.gh-issue-108927.TpwWav.rst
new file mode 100644
index 00000000000000..b1a78370afedb2
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2023-09-05-20-46-35.gh-issue-108927.TpwWav.rst
@@ -0,0 +1,4 @@
+Fixed order dependence in running tests in the same process
+when a test that has submodules (e.g. test_importlib) follows a test that
+imports its submodule (e.g. test_importlib.util) and precedes a test
+(e.g. test_unittest or test_compileall) that uses that submodule.
diff --git a/Misc/NEWS.d/next/Tests/2023-12-04-15-56-11.gh-issue-112334.FFc9Ti.rst b/Misc/NEWS.d/next/Tests/2023-12-04-15-56-11.gh-issue-112334.FFc9Ti.rst
new file mode 100644
index 00000000000000..aeaad6e5055522
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2023-12-04-15-56-11.gh-issue-112334.FFc9Ti.rst
@@ -0,0 +1,2 @@
+Adds a regression test to verify that ``vfork()`` is used when expected by
+:mod:`subprocess` on vfork enabled POSIX systems (Linux).
diff --git a/Misc/NEWS.d/next/Tests/2023-12-05-19-50-03.gh-issue-112769.kdLJmS.rst b/Misc/NEWS.d/next/Tests/2023-12-05-19-50-03.gh-issue-112769.kdLJmS.rst
new file mode 100644
index 00000000000000..1bbbb26fc322fa
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2023-12-05-19-50-03.gh-issue-112769.kdLJmS.rst
@@ -0,0 +1,3 @@
+The tests now correctly compare zlib version when
+:const:`zlib.ZLIB_RUNTIME_VERSION` contains non-integer suffixes. For
+example zlib-ng defines the version as ``1.3.0.zlib-ng``.
diff --git a/Misc/NEWS.d/next/Tools-Demos/2023-05-11-15-12-11.gh-issue-104389.EiOhB3.rst b/Misc/NEWS.d/next/Tools-Demos/2023-05-11-15-12-11.gh-issue-104389.EiOhB3.rst
deleted file mode 100644
index 854e1cca967c42..00000000000000
--- a/Misc/NEWS.d/next/Tools-Demos/2023-05-11-15-12-11.gh-issue-104389.EiOhB3.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Argument Clinic C converters now accept the ``unused`` keyword, for wrapping
-a parameter with :c:macro:`Py_UNUSED`. Patch by Erlend E. Aasland.
diff --git a/Misc/NEWS.d/next/Windows/2023-03-18-21-38-00.gh-issue-88013.Z3loxC.rst b/Misc/NEWS.d/next/Windows/2023-03-18-21-38-00.gh-issue-88013.Z3loxC.rst
deleted file mode 100644
index 4ca3185ea1f65e..00000000000000
--- a/Misc/NEWS.d/next/Windows/2023-03-18-21-38-00.gh-issue-88013.Z3loxC.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fixed a bug where :exc:`TypeError` was raised when calling
-:func:`ntpath.realpath` with a bytes parameter in some cases.
diff --git a/Misc/NEWS.d/next/Windows/2023-03-24-11-25-28.gh-issue-102997.dredy2.rst b/Misc/NEWS.d/next/Windows/2023-03-24-11-25-28.gh-issue-102997.dredy2.rst
deleted file mode 100644
index c8f7259aecba6f..00000000000000
--- a/Misc/NEWS.d/next/Windows/2023-03-24-11-25-28.gh-issue-102997.dredy2.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update Windows installer to use SQLite 3.41.2.
diff --git a/Misc/NEWS.d/next/Windows/2023-04-11-09-22-22.gh-issue-103088.6AJEuR.rst b/Misc/NEWS.d/next/Windows/2023-04-11-09-22-22.gh-issue-103088.6AJEuR.rst
deleted file mode 100644
index f9f5343f4210dc..00000000000000
--- a/Misc/NEWS.d/next/Windows/2023-04-11-09-22-22.gh-issue-103088.6AJEuR.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fixes venvs not working in bash on Windows across different disks
diff --git a/Misc/NEWS.d/next/Windows/2023-04-12-10-49-21.gh-issue-103088.Yjj-qJ.rst b/Misc/NEWS.d/next/Windows/2023-04-12-10-49-21.gh-issue-103088.Yjj-qJ.rst
deleted file mode 100644
index 1fee99da240378..00000000000000
--- a/Misc/NEWS.d/next/Windows/2023-04-12-10-49-21.gh-issue-103088.Yjj-qJ.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix virtual environment :file:`activate` script having incorrect line endings for Cygwin.
diff --git a/Misc/NEWS.d/next/Windows/2023-04-24-15-51-11.gh-issue-82814.GI3UkZ.rst b/Misc/NEWS.d/next/Windows/2023-04-24-15-51-11.gh-issue-82814.GI3UkZ.rst
deleted file mode 100644
index 5bd005ffacb800..00000000000000
--- a/Misc/NEWS.d/next/Windows/2023-04-24-15-51-11.gh-issue-82814.GI3UkZ.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Fix a potential ``[Errno 13] Permission denied`` when using :func:`shutil.copystat`
-within Windows Subsystem for Linux (WSL) on a mounted filesystem by adding
-``errno.EACCES`` to the list of ignored errors within the internal implementation.
diff --git a/Misc/NEWS.d/next/Windows/2023-12-03-19-22-37.gh-issue-112278.FiloCE.rst b/Misc/NEWS.d/next/Windows/2023-12-03-19-22-37.gh-issue-112278.FiloCE.rst
new file mode 100644
index 00000000000000..0350d105d97375
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2023-12-03-19-22-37.gh-issue-112278.FiloCE.rst
@@ -0,0 +1,2 @@
+Reduce the time cost for some functions in :mod:`platform` on Windows if
+current user has no permission to the WMI.
diff --git a/Misc/NEWS.d/next/macOS/2023-03-24-11-20-47.gh-issue-102997.ZgQkbq.rst b/Misc/NEWS.d/next/macOS/2023-03-24-11-20-47.gh-issue-102997.ZgQkbq.rst
deleted file mode 100644
index d0b390a896b743..00000000000000
--- a/Misc/NEWS.d/next/macOS/2023-03-24-11-20-47.gh-issue-102997.ZgQkbq.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update macOS installer to SQLite 3.41.2.
diff --git a/Misc/NEWS.d/next/macOS/2023-04-04-13-37-28.gh-issue-103207.x0vvQp.rst b/Misc/NEWS.d/next/macOS/2023-04-04-13-37-28.gh-issue-103207.x0vvQp.rst
deleted file mode 100644
index 3c176e3a6b5310..00000000000000
--- a/Misc/NEWS.d/next/macOS/2023-04-04-13-37-28.gh-issue-103207.x0vvQp.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add instructions to the macOS installer welcome display on how to workaround
-the macOS 13 Ventura “The installer encountered an error� failure.
diff --git a/Misc/NEWS.d/next/macOS/2023-04-24-18-37-48.gh-issue-60436.in-IyF.rst b/Misc/NEWS.d/next/macOS/2023-04-24-18-37-48.gh-issue-60436.in-IyF.rst
deleted file mode 100644
index f274d3b898f15d..00000000000000
--- a/Misc/NEWS.d/next/macOS/2023-04-24-18-37-48.gh-issue-60436.in-IyF.rst
+++ /dev/null
@@ -1 +0,0 @@
-update curses textbox to additionally handle backspace using the ``curses.ascii.DEL`` key press.
diff --git a/Misc/NEWS.d/next/macOS/2023-05-04-21-47-59.gh-issue-104180.lEJCwd.rst b/Misc/NEWS.d/next/macOS/2023-05-04-21-47-59.gh-issue-104180.lEJCwd.rst
deleted file mode 100644
index b6b18dcfd81394..00000000000000
--- a/Misc/NEWS.d/next/macOS/2023-05-04-21-47-59.gh-issue-104180.lEJCwd.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Support reading SOCKS proxy configuration from macOS System Configuration.
-Patch by Sam Schott.
diff --git a/Misc/NEWS.d/next/macOS/2023-12-06-12-11-13.gh-issue-109981.mOHg10.rst b/Misc/NEWS.d/next/macOS/2023-12-06-12-11-13.gh-issue-109981.mOHg10.rst
new file mode 100644
index 00000000000000..f86ab2c37ee6ec
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2023-12-06-12-11-13.gh-issue-109981.mOHg10.rst
@@ -0,0 +1,3 @@
+Use ``/dev/fd`` on macOS to determine the number of open files in
+``test.support.os_helper.fd_count`` to avoid a crash with "guarded" file
+descriptors when probing for open files.
diff --git a/Misc/NEWS.d/next/macOS/2023-12-07-14-19-46.gh-issue-110820.DIxb_F.rst b/Misc/NEWS.d/next/macOS/2023-12-07-14-19-46.gh-issue-110820.DIxb_F.rst
new file mode 100644
index 00000000000000..0badace7928745
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2023-12-07-14-19-46.gh-issue-110820.DIxb_F.rst
@@ -0,0 +1,3 @@
+Make sure the preprocessor definitions for ``ALIGNOF_MAX_ALIGN_T``,
+``SIZEOF_LONG_DOUBLE`` and ``HAVE_GCC_ASM_FOR_X64`` are correct for
+Universal 2 builds on macOS.
diff --git a/Misc/NEWS.d/next/macOS/2023-12-07-15-53-16.gh-issue-110017.UMYzMR.rst b/Misc/NEWS.d/next/macOS/2023-12-07-15-53-16.gh-issue-110017.UMYzMR.rst
new file mode 100644
index 00000000000000..eab1746f1ae3f7
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2023-12-07-15-53-16.gh-issue-110017.UMYzMR.rst
@@ -0,0 +1,2 @@
+Disable a signal handling stress test on macOS due to a bug in macOS
+(FB13453490).
diff --git a/Misc/SpecialBuilds.txt b/Misc/SpecialBuilds.txt
index 5609928284d448..78201bfbd6741d 100644
--- a/Misc/SpecialBuilds.txt
+++ b/Misc/SpecialBuilds.txt
@@ -43,13 +43,9 @@ Py_TRACE_REFS
 
 Build option: ``./configure --with-trace-refs``.
 
-Turn on heavy reference debugging.  This is major surgery.  Every PyObject grows
-two more pointers, to maintain a doubly-linked list of all live heap-allocated
-objects.  Most built-in type objects are not in this list, as they're statically
-allocated.
-
-Note that because the fundamental PyObject layout changes, Python modules
-compiled with Py_TRACE_REFS are incompatible with modules compiled without it.
+Turn on heavy reference debugging.  This is major surgery.  All live
+heap-allocated objects are traced in a hash table.  Most built-in type objects
+are not in this list, as they're statically allocated.
 
 Special gimmicks:
 
diff --git a/Misc/platform_triplet.c b/Misc/platform_triplet.c
new file mode 100644
index 00000000000000..3307260544e8a6
--- /dev/null
+++ b/Misc/platform_triplet.c
@@ -0,0 +1,261 @@
+/* Detect platform triplet from builtin defines
+ * cc -E Misc/platform_triplet.c | grep '^PLATFORM_TRIPLET=' | tr -d ' '
+ */
+#undef bfin
+#undef cris
+#undef fr30
+#undef linux
+#undef hppa
+#undef hpux
+#undef i386
+#undef mips
+#undef powerpc
+#undef sparc
+#undef unix
+#if defined(__ANDROID__)
+    # Android is not a multiarch system.
+#elif defined(__linux__)
+/*
+ * BEGIN of Linux block
+ */
+// Detect libc (based on config.guess)
+# include <features.h>
+# if defined(__UCLIBC__)
+#  error uclibc not supported
+# elif defined(__dietlibc__)
+#  error dietlibc not supported
+# elif defined(__GLIBC__)
+#  define LIBC gnu
+#  define LIBC_X32 gnux32
+#  if defined(__ARM_PCS_VFP)
+#   define LIBC_ARM gnueabihf
+#  else
+#   define LIBC_ARM gnueabi
+#  endif
+#  if defined(__loongarch__)
+#   if defined(__loongarch_soft_float)
+#    define LIBC_LA gnusf
+#   elif defined(__loongarch_single_float)
+#    define LIBC_LA gnuf32
+#   elif defined(__loongarch_double_float)
+#    define LIBC_LA gnu
+#   else
+#    error unknown loongarch floating-point base abi
+#   endif
+#  endif
+#  if defined(_MIPS_SIM)
+#   if defined(__mips_hard_float)
+#    if _MIPS_SIM == _ABIO32
+#     define LIBC_MIPS gnu
+#    elif _MIPS_SIM == _ABIN32
+#     define LIBC_MIPS gnuabin32
+#    elif _MIPS_SIM == _ABI64
+#     define LIBC_MIPS gnuabi64
+#    else
+#     error unknown mips sim value
+#    endif
+#   else
+#    if _MIPS_SIM == _ABIO32
+#     define LIBC_MIPS gnusf
+#    elif _MIPS_SIM == _ABIN32
+#     define LIBC_MIPS gnuabin32sf
+#    elif _MIPS_SIM == _ABI64
+#     define LIBC_MIPS gnuabi64sf
+#    else
+#     error unknown mips sim value
+#    endif
+#   endif
+#  endif
+#  if defined(__SPE__)
+#   define LIBC_PPC gnuspe
+#  else
+#   define LIBC_PPC gnu
+#  endif
+# else
+// Heuristic to detect musl libc
+#  include <stdarg.h>
+#  ifdef __DEFINED_va_list
+#   define LIBC musl
+#   define LIBC_X32 muslx32
+#   if defined(__ARM_PCS_VFP)
+#    define LIBC_ARM musleabihf
+#   else
+#    define LIBC_ARM musleabi
+#   endif
+#   if defined(__loongarch__)
+#    if defined(__loongarch_soft_float)
+#     define LIBC_LA muslsf
+#    elif defined(__loongarch_single_float)
+#     define LIBC_LA muslf32
+#    elif defined(__loongarch_double_float)
+#     define LIBC_LA musl
+#    else
+#     error unknown loongarch floating-point base abi
+#    endif
+#   endif
+#   if defined(_MIPS_SIM)
+#    if defined(__mips_hard_float)
+#     if _MIPS_SIM == _ABIO32
+#      define LIBC_MIPS musl
+#     elif _MIPS_SIM == _ABIN32
+#      define LIBC_MIPS musln32
+#     elif _MIPS_SIM == _ABI64
+#      define LIBC_MIPS musl
+#     else
+#      error unknown mips sim value
+#     endif
+#    else
+#     if _MIPS_SIM == _ABIO32
+#      define LIBC_MIPS muslsf
+#     elif _MIPS_SIM == _ABIN32
+#      define LIBC_MIPS musln32sf
+#     elif _MIPS_SIM == _ABI64
+#      define LIBC_MIPS muslsf
+#     else
+#      error unknown mips sim value
+#     endif
+#    endif
+#   endif
+#   if defined(_SOFT_FLOAT) || defined(__NO_FPRS__)
+#    define LIBC_PPC muslsf
+#   else
+#    define LIBC_PPC musl
+#   endif
+#  else
+#   error unknown libc
+#  endif
+# endif
+
+# if defined(__x86_64__) && defined(__LP64__)
+PLATFORM_TRIPLET=x86_64-linux-LIBC
+# elif defined(__x86_64__) && defined(__ILP32__)
+PLATFORM_TRIPLET=x86_64-linux-LIBC_X32
+# elif defined(__i386__)
+PLATFORM_TRIPLET=i386-linux-LIBC
+# elif defined(__aarch64__) && defined(__AARCH64EL__)
+#  if defined(__ILP32__)
+PLATFORM_TRIPLET=aarch64_ilp32-linux-LIBC
+#  else
+PLATFORM_TRIPLET=aarch64-linux-LIBC
+#  endif
+# elif defined(__aarch64__) && defined(__AARCH64EB__)
+#  if defined(__ILP32__)
+PLATFORM_TRIPLET=aarch64_be_ilp32-linux-LIBC
+#  else
+PLATFORM_TRIPLET=aarch64_be-linux-LIBC
+#  endif
+# elif defined(__alpha__)
+PLATFORM_TRIPLET=alpha-linux-LIBC
+# elif defined(__ARM_EABI__)
+#  if defined(__ARMEL__)
+PLATFORM_TRIPLET=arm-linux-LIBC_ARM
+#  else
+PLATFORM_TRIPLET=armeb-linux-LIBC_ARM
+#  endif
+# elif defined(__hppa__)
+PLATFORM_TRIPLET=hppa-linux-LIBC
+# elif defined(__ia64__)
+PLATFORM_TRIPLET=ia64-linux-LIBC
+# elif defined(__loongarch__) && defined(__loongarch_lp64)
+PLATFORM_TRIPLET=loongarch64-linux-LIBC_LA
+# elif defined(__m68k__) && !defined(__mcoldfire__)
+PLATFORM_TRIPLET=m68k-linux-LIBC
+# elif defined(__mips__)
+#  if defined(__mips_isa_rev) && (__mips_isa_rev >=6)
+#   if defined(_MIPSEL) && defined(__mips64)
+PLATFORM_TRIPLET=mipsisa64r6el-linux-LIBC_MIPS
+#   elif defined(_MIPSEL)
+PLATFORM_TRIPLET=mipsisa32r6el-linux-LIBC_MIPS
+#   elif defined(__mips64)
+PLATFORM_TRIPLET=mipsisa64r6-linux-LIBC_MIPS
+#   else
+PLATFORM_TRIPLET=mipsisa32r6-linux-LIBC_MIPS
+#   endif
+#  else
+#   if defined(_MIPSEL) && defined(__mips64)
+PLATFORM_TRIPLET=mips64el-linux-LIBC_MIPS
+#   elif defined(_MIPSEL)
+PLATFORM_TRIPLET=mipsel-linux-LIBC_MIPS
+#   elif defined(__mips64)
+PLATFORM_TRIPLET=mips64-linux-LIBC_MIPS
+#   else
+PLATFORM_TRIPLET=mips-linux-LIBC_MIPS
+#   endif
+#  endif
+# elif defined(__or1k__)
+PLATFORM_TRIPLET=or1k-linux-LIBC
+# elif defined(__powerpc64__)
+#  if defined(__LITTLE_ENDIAN__)
+PLATFORM_TRIPLET=powerpc64le-linux-LIBC
+#  else
+PLATFORM_TRIPLET=powerpc64-linux-LIBC
+#  endif
+# elif defined(__powerpc__)
+PLATFORM_TRIPLET=powerpc-linux-LIBC_PPC
+# elif defined(__s390x__)
+PLATFORM_TRIPLET=s390x-linux-LIBC
+# elif defined(__s390__)
+PLATFORM_TRIPLET=s390-linux-LIBC
+# elif defined(__sh__) && defined(__LITTLE_ENDIAN__)
+PLATFORM_TRIPLET=sh4-linux-LIBC
+# elif defined(__sparc__) && defined(__arch64__)
+PLATFORM_TRIPLET=sparc64-linux-LIBC
+# elif defined(__sparc__)
+PLATFORM_TRIPLET=sparc-linux-LIBC
+# elif defined(__riscv)
+#  if __riscv_xlen == 32
+PLATFORM_TRIPLET=riscv32-linux-LIBC
+#  elif __riscv_xlen == 64
+PLATFORM_TRIPLET=riscv64-linux-LIBC
+#  else
+#   error unknown platform triplet
+#  endif
+# else
+#   error unknown platform triplet
+# endif
+/*
+ * END of Linux block
+ */
+#elif defined(__FreeBSD_kernel__)
+# if defined(__LP64__)
+PLATFORM_TRIPLET=x86_64-kfreebsd-gnu
+# elif defined(__i386__)
+PLATFORM_TRIPLET=i386-kfreebsd-gnu
+# else
+#   error unknown platform triplet
+# endif
+#elif defined(__gnu_hurd__)
+# if defined(__x86_64__) && defined(__LP64__)
+PLATFORM_TRIPLET=x86_64-gnu
+# elif defined(__i386__)
+PLATFORM_TRIPLET=i386-gnu
+# else
+#   error unknown platform triplet
+# endif
+#elif defined(__APPLE__)
+PLATFORM_TRIPLET=darwin
+#elif defined(__VXWORKS__)
+PLATFORM_TRIPLET=vxworks
+#elif defined(__wasm32__)
+#  if defined(__EMSCRIPTEN__)
+PLATFORM_TRIPLET=wasm32-emscripten
+#  elif defined(__wasi__)
+#    if defined(_REENTRANT)
+PLATFORM_TRIPLET=wasm32-wasi-threads
+#    else
+PLATFORM_TRIPLET=wasm32-wasi
+#    endif
+#  else
+#    error unknown wasm32 platform
+#  endif
+#elif defined(__wasm64__)
+#  if defined(__EMSCRIPTEN__)
+PLATFORM_TRIPLET=wasm64-emscripten
+#  elif defined(__wasi__)
+PLATFORM_TRIPLET=wasm64-wasi
+#  else
+#    error unknown wasm64 platform
+#  endif
+#else
+# error unknown platform triplet
+#endif
diff --git a/Misc/python-config.in b/Misc/python-config.in
index ebd99daa0c2798..81c3316e334a48 100644
--- a/Misc/python-config.in
+++ b/Misc/python-config.in
@@ -4,7 +4,6 @@
 # Keep this script in sync with python-config.sh.in
 
 import getopt
-import os
 import sys
 import sysconfig
 
diff --git a/Misc/python.man b/Misc/python.man
index bf7cf767d164a6..9f89c94adf5028 100644
--- a/Misc/python.man
+++ b/Misc/python.man
@@ -592,8 +592,8 @@ works on Mac OS X.
 .IP PYTHONUSERBASE
 Defines the user base directory, which is used to compute the path of the user
 .IR site-packages
-directory and Distutils installation paths for
-.IR "python setup\.py install \-\-user" .
+directory and installation paths for
+.IR "python \-m pip install \-\-user" .
 .IP PYTHONPROFILEIMPORTTIME
 If this environment variable is set to a non-empty string, Python will
 show how long each import takes. This is exactly equivalent to setting
diff --git a/Misc/requirements-test.txt b/Misc/requirements-test.txt
deleted file mode 100644
index 60e7ed20a3d510..00000000000000
--- a/Misc/requirements-test.txt
+++ /dev/null
@@ -1 +0,0 @@
-tzdata==2020.3
diff --git a/Misc/sbom.spdx.json b/Misc/sbom.spdx.json
new file mode 100644
index 00000000000000..09355640db888e
--- /dev/null
+++ b/Misc/sbom.spdx.json
@@ -0,0 +1,2294 @@
+{
+  "SPDXID": "SPDXRef-DOCUMENT",
+  "files": [
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-COPYING",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "39e6f567a10e36b2e77727e98e60bbcb3eb3af0b"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "122f2c27000472a201d337b9b31f7eb2b52d091b02857061a8880371612d9534"
+        }
+      ],
+      "fileName": "Modules/expat/COPYING"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-ascii.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "b0235fa3cf845a7d68e8e66dd344d5e32e8951b5"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "42f8b392c70366743eacbc60ce021389ccaa333598dd49eef6ee5c93698ca205"
+        }
+      ],
+      "fileName": "Modules/expat/ascii.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-asciitab.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "cbb53d16ca1f35ee9c9e296116efd222ae611ed9"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "1cc0ae749019fc0e488cd1cf245f6beaa6d4f7c55a1fc797e5aa40a408bc266b"
+        }
+      ],
+      "fileName": "Modules/expat/asciitab.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-expat.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "ab7bb32514d170592dfb3f76e41bbdc075a4e7e0"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "f521acdad222644365b0e81a33bcd6939a98c91b225c47582cc84bd73d96febc"
+        }
+      ],
+      "fileName": "Modules/expat/expat.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-expat-config.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "73627287302ee3e84347c4fe21f37a9cb828bc3b"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "f17e59f9d95eeb05694c02508aa284d332616c22cbe2e6a802d8a0710310eaab"
+        }
+      ],
+      "fileName": "Modules/expat/expat_config.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-expat-external.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "b70ce53fdc25ae482681ae2f6623c3c8edc9c1b7"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "86afb425ec9999eb4f1ec9ab2fb41c58c4aa5cb9bf934b8c94264670fc5a961d"
+        }
+      ],
+      "fileName": "Modules/expat/expat_external.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-iasciitab.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "1b0e9014c0baa4c6254d2b5e6a67c70148309c34"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "ad8b01e9f323cc4208bcd22241df383d7e8641fe3c8b3415aa513de82531f89f"
+        }
+      ],
+      "fileName": "Modules/expat/iasciitab.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-internal.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "2790d37e7de2f13dccc4f4fb352cbdf9ed6abaa2"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "d2efe5a1018449968a689f444cca432e3d5875aba6ad08ee18ca235d64f41bb9"
+        }
+      ],
+      "fileName": "Modules/expat/internal.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-latin1tab.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "d335ecca380e331a0ea7dc33838a4decd93ec1e4"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "eab66226da100372e01e42e1cbcd8ac2bbbb5c1b5f95d735289cc85c7a8fc2ba"
+        }
+      ],
+      "fileName": "Modules/expat/latin1tab.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-nametab.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "cf2bc9626c945826602ba9170786e9a2a44645e4"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "67dcf415d37a4b692a6a8bb46f990c02d83f2ef3d01a65cd61c8594a084246f2"
+        }
+      ],
+      "fileName": "Modules/expat/nametab.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-pyexpatns.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "baa44fe4581895d42e8d5e83d8ce6a69b1c34dbe"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "33a7b9ac8bf4571e23272cdf644c6f9808bd44c66b149e3c41ab3870d1888609"
+        }
+      ],
+      "fileName": "Modules/expat/pyexpatns.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-siphash.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "2b984f806f10fbfbf72d8d1b7ba2992413c15299"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "fbce56cd680e690043bbf572188cc2d0a25dbfc0d47ac8cb98eb3de768d4e694"
+        }
+      ],
+      "fileName": "Modules/expat/siphash.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-utf8tab.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "b77c8fcfb551553c81d6fbd94c798c8aa04ad021"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "8cd26bd461d334d5e1caedb3af4518d401749f2fc66d56208542b29085159c18"
+        }
+      ],
+      "fileName": "Modules/expat/utf8tab.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-winconfig.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "e774ae6ee9391aa6ffb8f775fb74e48f4b428959"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "3c71cea9a6174718542331971a35db317902b2433be9d8dd1cb24239b635c0cc"
+        }
+      ],
+      "fileName": "Modules/expat/winconfig.h"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-xmlparse.c",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "b580e827e16baa6b035586ffcd4d90301e5a353f"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "483518bbd69338eefc706cd7fc0b6039df2d3e347f64097989059ed6d2385a1e"
+        }
+      ],
+      "fileName": "Modules/expat/xmlparse.c"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-xmlrole.c",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "5ef21312af73deb2428be3fe97a65244608e76de"
+        },
+        {
+          "algorithm": "SHA256",
+          "checksumValue": "6fcf8c72ac0112c1b98bd2039c632a66b4c3dc516ce7c1f981390951121ef3c0"
+        }
+      ],
+      "fileName": "Modules/expat/xmlrole.c"
+    },
+    {
+      "SPDXID": "SPDXRef-FILE-Modules-expat-xmlrole.h",
+      "checksums": [
+        {
+          "algorithm": "SHA1",
+          "checksumValue": "c1a4ea6356643d0820edb9c024c20ad2aaf562dc"
+        },
+        {
+          "algorithm": "SHA256",
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+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
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+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-bench.c",
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+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-bench-full.c",
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+      "relationshipType": "CONTAINS",
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+    {
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+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-literature-REFERENCES.txt",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-literature-bignum.txt",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-literature-fnt.py",
+      "relationshipType": "CONTAINS",
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+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-literature-matrix-transform.txt",
+      "relationshipType": "CONTAINS",
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+    },
+    {
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+      "relationshipType": "CONTAINS",
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+    },
+    {
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+    },
+    {
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+      "relationshipType": "CONTAINS",
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+    },
+    {
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+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
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+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
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+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-mpalloc.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
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+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-mpdecimal.c",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-mpdecimal.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
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+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-mpsignal.c",
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+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-numbertheory.c",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-numbertheory.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-sixstep.c",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-sixstep.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
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+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-transpose.c",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-transpose.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-typearith.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-umodarith.h",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-decimal-libmpdec-vcdiv64.asm",
+      "relationshipType": "CONTAINS",
+      "spdxElementId": "SPDXRef-PACKAGE-mpdecimal"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-FILE-Lib-ensurepip-bundled-pip-23.3.1-py3-none-any.whl",
+      "relationshipType": "CONTAINS",
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+  "spdxVersion": "SPDX-2.3"
+}
\ No newline at end of file
diff --git a/Misc/stable_abi.toml b/Misc/stable_abi.toml
index 48299e9b35ff97..22b25dd0ec141f 100644
--- a/Misc/stable_abi.toml
+++ b/Misc/stable_abi.toml
@@ -447,6 +447,7 @@
     added = '3.2'
 [function.PyCFunction_Call]
     added = '3.2'
+    abi_only = true
 [function.PyCFunction_GetFlags]
     added = '3.2'
 [function.PyCFunction_GetFunction]
@@ -663,14 +664,18 @@
     added = '3.2'
 [function.PyEval_AcquireLock]
     added = '3.2'
+    abi_only = true
 [function.PyEval_AcquireThread]
     added = '3.2'
 [function.PyEval_CallFunction]
     added = '3.2'
+    abi_only = true
 [function.PyEval_CallMethod]
     added = '3.2'
+    abi_only = true
 [function.PyEval_CallObjectWithKeywords]
     added = '3.2'
+    abi_only = true
 [function.PyEval_EvalCode]
     added = '3.2'
 [function.PyEval_EvalCodeEx]
@@ -693,8 +698,10 @@
     added = '3.2'
 [function.PyEval_InitThreads]
     added = '3.2'
+    abi_only = true
 [function.PyEval_ReleaseLock]
     added = '3.2'
+    abi_only = true
 [function.PyEval_ReleaseThread]
     added = '3.2'
 [function.PyEval_RestoreThread]
@@ -703,6 +710,7 @@
     added = '3.2'
 [function.PyEval_ThreadsInitialized]
     added = '3.2'
+    abi_only = true
 [data.PyExc_ArithmeticError]
     added = '3.2'
 [data.PyExc_AssertionError]
@@ -1308,8 +1316,10 @@
     added = '3.2'
 [function.PySys_AddWarnOption]
     added = '3.2'
+    abi_only = true
 [function.PySys_AddWarnOptionUnicode]
     added = '3.2'
+    abi_only = true
 [function.PySys_FormatStderr]
     added = '3.2'
 [function.PySys_FormatStdout]
@@ -1318,16 +1328,20 @@
     added = '3.2'
 [function.PySys_HasWarnOptions]
     added = '3.2'
+    abi_only = true
 [function.PySys_ResetWarnOptions]
     added = '3.2'
 [function.PySys_SetArgv]
     added = '3.2'
+    abi_only = true
 [function.PySys_SetArgvEx]
     added = '3.2'
+    abi_only = true
 [function.PySys_SetObject]
     added = '3.2'
 [function.PySys_SetPath]
     added = '3.2'
+    abi_only = true
 [function.PySys_WriteStderr]
     added = '3.2'
 [function.PySys_WriteStdout]
@@ -1655,8 +1669,10 @@
     added = '3.2'
 [function.Py_SetProgramName]
     added = '3.2'
+    abi_only = true
 [function.Py_SetPythonHome]
     added = '3.2'
+    abi_only = true
 [function.Py_SetRecursionLimit]
     added = '3.2'
 [function.Py_VaBuildValue]
@@ -1739,12 +1755,16 @@
 
 [function.PyObject_AsCharBuffer]
     added = '3.2'
+    abi_only = true
 [function.PyObject_AsReadBuffer]
     added = '3.2'
+    abi_only = true
 [function.PyObject_AsWriteBuffer]
     added = '3.2'
+    abi_only = true
 [function.PyObject_CheckReadBuffer]
     added = '3.2'
+    abi_only = true
 
 # Flags are implicitly part of the ABI:
 
@@ -1987,6 +2007,7 @@
     added = '3.7'  # (and 3.6.1 and 3.5.3)
 [function.PySys_AddXOption]
     added = '3.7'  # (and 3.6.1 and 3.5.3)
+    abi_only = true
 [function.PySys_GetXOptions]
     added = '3.7'  # (and 3.6.1 and 3.5.3)
 [function.PyUnicode_AsUCS4]
@@ -2017,6 +2038,7 @@
     added = '3.7'  # (and 3.6.1 and 3.5.3)
 [function.Py_SetPath]
     added = '3.7'  # (and 3.6.1 and 3.5.3)
+    abi_only = true
 [function.PyErr_SetExcFromWindowsErr]
     added = '3.7'  # (and 3.6.1 and 3.5.3)
     ifdef = 'MS_WINDOWS'
@@ -2406,3 +2428,56 @@
     added = '3.12'
 [const.Py_TPFLAGS_ITEMS_AT_END]
     added = '3.12'
+[function.PyImport_AddModuleRef]
+    added = '3.13'
+[function.PyWeakref_GetRef]
+    added = '3.13'
+[function.PyObject_DelAttr]
+    added = '3.13'
+[function.PyObject_DelAttrString]
+    added = '3.13'
+[function.PyObject_GetOptionalAttr]
+    added = '3.13'
+[function.PyObject_GetOptionalAttrString]
+    added = '3.13'
+[function.PyMapping_GetOptionalItem]
+    added = '3.13'
+[function.PyMapping_GetOptionalItemString]
+    added = '3.13'
+[function.PyModule_Add]
+    added = '3.13'
+[function.PyDict_GetItemRef]
+    added = '3.13'
+[function.PyDict_GetItemStringRef]
+    added = '3.13'
+[function.PyLong_AsInt]
+    added = '3.13'
+[function.PyObject_HasAttrWithError]
+    added = '3.13'
+[function.PyObject_HasAttrStringWithError]
+    added = '3.13'
+[function.PyMapping_HasKeyWithError]
+    added = '3.13'
+[function.PyMapping_HasKeyStringWithError]
+    added = '3.13'
+[function.Py_IsFinalizing]
+    added = '3.13'
+[function.PyUnicode_EqualToUTF8]
+    added = '3.13'
+[function.PyUnicode_EqualToUTF8AndSize]
+    added = '3.13'
+[function.PyMem_RawMalloc]
+    added = '3.13'
+[function.PyMem_RawCalloc]
+    added = '3.13'
+[function.PyMem_RawRealloc]
+    added = '3.13'
+[function.PyMem_RawFree]
+    added = '3.13'
+[function.PySys_Audit]
+    added = '3.13'
+[function.PySys_AuditTuple]
+    added = '3.13'
+[function._Py_SetRefcnt]
+    added = '3.13'
+    abi_only = true
diff --git a/Misc/valgrind-python.supp b/Misc/valgrind-python.supp
index c9c45ba7ed6de4..29954c1bbad350 100644
--- a/Misc/valgrind-python.supp
+++ b/Misc/valgrind-python.supp
@@ -46,14 +46,6 @@
 #    Will need to fix that.
 #
 
-{
-   Suppress leaking the GIL.  Happens once per process, see comment in ceval.c.
-   Memcheck:Leak
-   fun:malloc
-   fun:PyThread_allocate_lock
-   fun:PyEval_InitThreads
-}
-
 {
    Suppress leaking the GIL after a fork.
    Memcheck:Leak
diff --git a/Modules/Setup b/Modules/Setup
index 312e99fea530dc..1367f0ef4fa54a 100644
--- a/Modules/Setup
+++ b/Modules/Setup
@@ -150,12 +150,12 @@ PYTHONPATH=$(COREPYTHONPATH)
 #_typing _typingmodule.c
 #_zoneinfo _zoneinfo.c
 #array arraymodule.c
-#audioop audioop.c
 #binascii binascii.c
 #cmath cmathmodule.c
 #math mathmodule.c
 #mmap mmapmodule.c
 #select selectmodule.c
+#_sysconfig _sysconfig.c
 
 # XML
 #_elementtree _elementtree.c
@@ -165,7 +165,7 @@ PYTHONPATH=$(COREPYTHONPATH)
 #_blake2 _blake2/blake2module.c _blake2/blake2b_impl.c _blake2/blake2s_impl.c
 #_md5 md5module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_MD5.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
 #_sha1 sha1module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_SHA1.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
-#_sha2 sha2module.c -I$(srcdir)/Modules/_hacl/include Modules/_hacl/libHacl_Streaming_SHA2.a
+#_sha2 sha2module.c -I$(srcdir)/Modules/_hacl/include Modules/_hacl/libHacl_Hash_SHA2.a
 #_sha3 sha3module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_SHA3.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
 
 # text encodings and unicode
@@ -184,17 +184,10 @@ PYTHONPATH=$(COREPYTHONPATH)
 #_posixshmem -I$(srcdir)/Modules/_multiprocessing _multiprocessing/posixshmem.c -lrt
 #fcntl fcntlmodule.c
 #grp grpmodule.c
-#ossaudiodev ossaudiodev.c
 #resource resource.c
-#spwd spwdmodule.c
 #syslog syslogmodule.c
 #termios termios.c
 
-# Modules with UNIX dependencies that require external libraries
-
-#_crypt _cryptmodule.c -lcrypt
-#nis nismodule.c -I/usr/include/tirpc -lnsl -ltirpc
-
 # Modules that require external libraries.
 
 #_bz2 _bz2module.c -lbz2
@@ -262,7 +255,7 @@ PYTHONPATH=$(COREPYTHONPATH)
 # *** Always uncomment this; X11 libraries to link with:
 #	-lX11
 
-# Some system have -lcurses 
+# Some system have -lcurses
 #_curses -lncurses -lncursesw -ltermcap _cursesmodule.c
 #_curses_panel -lpanel -lncurses _curses_panel.c
 
diff --git a/Modules/Setup.bootstrap.in b/Modules/Setup.bootstrap.in
index e3e9b96b0630df..cd12c1bd0df8f9 100644
--- a/Modules/Setup.bootstrap.in
+++ b/Modules/Setup.bootstrap.in
@@ -19,8 +19,10 @@ errno errnomodule.c
 _io _io/_iomodule.c _io/iobase.c _io/fileio.c _io/bytesio.c _io/bufferedio.c _io/textio.c _io/stringio.c
 itertools itertoolsmodule.c
 _sre _sre/sre.c
+_sysconfig _sysconfig.c
 _thread _threadmodule.c
 time timemodule.c
+_typing _typingmodule.c
 _weakref _weakref.c
 
 # commonly used core modules
diff --git a/Modules/Setup.stdlib.in b/Modules/Setup.stdlib.in
index 95409d48c0da02..54650ea9c1d4ac 100644
--- a/Modules/Setup.stdlib.in
+++ b/Modules/Setup.stdlib.in
@@ -41,13 +41,11 @@
 @MODULE__QUEUE_TRUE@_queue _queuemodule.c
 @MODULE__RANDOM_TRUE@_random _randommodule.c
 @MODULE__STRUCT_TRUE@_struct _struct.c
-@MODULE__TYPING_TRUE@_typing _typingmodule.c
 @MODULE__XXSUBINTERPRETERS_TRUE@_xxsubinterpreters _xxsubinterpretersmodule.c
 @MODULE__XXINTERPCHANNELS_TRUE@_xxinterpchannels _xxinterpchannelsmodule.c
 @MODULE__ZONEINFO_TRUE@_zoneinfo _zoneinfo.c
 
 # needs libm
-@MODULE_AUDIOOP_TRUE@audioop audioop.c
 @MODULE_MATH_TRUE@math mathmodule.c
 @MODULE_CMATH_TRUE@cmath cmathmodule.c
 @MODULE__STATISTICS_TRUE@_statistics _statisticsmodule.c
@@ -79,7 +77,7 @@
 # hashing builtins, can be disabled with --without-builtin-hashlib-hashes
 @MODULE__MD5_TRUE@_md5 md5module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_MD5.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
 @MODULE__SHA1_TRUE@_sha1 sha1module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_SHA1.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
-@MODULE__SHA2_TRUE@_sha2 sha2module.c -I$(srcdir)/Modules/_hacl/include Modules/_hacl/libHacl_Streaming_SHA2.a
+@MODULE__SHA2_TRUE@_sha2 sha2module.c -I$(srcdir)/Modules/_hacl/include Modules/_hacl/libHacl_Hash_SHA2.a
 @MODULE__SHA3_TRUE@_sha3 sha3module.c -I$(srcdir)/Modules/_hacl/include _hacl/Hacl_Hash_SHA3.c -D_BSD_SOURCE -D_DEFAULT_SOURCE
 @MODULE__BLAKE2_TRUE@_blake2 _blake2/blake2module.c _blake2/blake2b_impl.c _blake2/blake2s_impl.c
 
@@ -107,22 +105,14 @@
 # Modules with some UNIX dependencies
 #
 
-# needs -lcrypt on some systems
-@MODULE__CRYPT_TRUE@_crypt _cryptmodule.c
 @MODULE_FCNTL_TRUE@fcntl fcntlmodule.c
 @MODULE_GRP_TRUE@grp grpmodule.c
 @MODULE_MMAP_TRUE@mmap mmapmodule.c
-# FreeBSD: nis/yp APIs are in libc
-# Linux: glibc has deprecated SUN RPC, APIs are in libnsl and libtirpc (bpo-32521)
-@MODULE_NIS_TRUE@nis nismodule.c
 # needs sys/soundcard.h or linux/soundcard.h (Linux, FreeBSD)
-@MODULE_OSSAUDIODEV_TRUE@ossaudiodev ossaudiodev.c
 @MODULE__POSIXSUBPROCESS_TRUE@_posixsubprocess _posixsubprocess.c
 @MODULE_RESOURCE_TRUE@resource resource.c
 @MODULE_SELECT_TRUE@select selectmodule.c
 @MODULE__SOCKET_TRUE@_socket socketmodule.c
-# AIX has shadow passwords, but does not provide getspent API
-@MODULE_SPWD_TRUE@spwd spwdmodule.c
 @MODULE_SYSLOG_TRUE@syslog syslogmodule.c
 @MODULE_TERMIOS_TRUE@termios termios.c
 
@@ -168,9 +158,10 @@
 @MODULE_XXSUBTYPE_TRUE@xxsubtype xxsubtype.c
 @MODULE__XXTESTFUZZ_TRUE@_xxtestfuzz _xxtestfuzz/_xxtestfuzz.c _xxtestfuzz/fuzzer.c
 @MODULE__TESTBUFFER_TRUE@_testbuffer _testbuffer.c
-@MODULE__TESTINTERNALCAPI_TRUE@_testinternalcapi _testinternalcapi.c
-@MODULE__TESTCAPI_TRUE@_testcapi _testcapimodule.c _testcapi/vectorcall.c _testcapi/vectorcall_limited.c _testcapi/heaptype.c _testcapi/unicode.c _testcapi/getargs.c _testcapi/pytime.c _testcapi/datetime.c _testcapi/docstring.c _testcapi/mem.c _testcapi/watchers.c _testcapi/long.c _testcapi/float.c _testcapi/structmember.c _testcapi/exceptions.c _testcapi/code.c _testcapi/buffer.c _testcapi/pyos.c _testcapi/immortal.c _testcapi/heaptype_relative.c _testcapi/gc.c
+@MODULE__TESTINTERNALCAPI_TRUE@_testinternalcapi _testinternalcapi.c _testinternalcapi/test_lock.c _testinternalcapi/pytime.c _testinternalcapi/set.c _testinternalcapi/test_critical_sections.c
+@MODULE__TESTCAPI_TRUE@_testcapi _testcapimodule.c _testcapi/vectorcall.c _testcapi/vectorcall_limited.c _testcapi/heaptype.c _testcapi/abstract.c _testcapi/bytearray.c _testcapi/bytes.c _testcapi/unicode.c _testcapi/dict.c _testcapi/set.c _testcapi/list.c _testcapi/tuple.c _testcapi/getargs.c _testcapi/datetime.c _testcapi/docstring.c _testcapi/mem.c _testcapi/watchers.c _testcapi/long.c _testcapi/float.c _testcapi/complex.c _testcapi/numbers.c _testcapi/structmember.c _testcapi/exceptions.c _testcapi/code.c _testcapi/buffer.c _testcapi/pyatomic.c _testcapi/pyos.c _testcapi/file.c _testcapi/codec.c _testcapi/immortal.c _testcapi/heaptype_relative.c _testcapi/gc.c _testcapi/sys.c _testcapi/hash.c
 @MODULE__TESTCLINIC_TRUE@_testclinic _testclinic.c
+@MODULE__TESTCLINIC_LIMITED_TRUE@_testclinic_limited _testclinic_limited.c
 
 # Some testing modules MUST be built as shared libraries.
 *shared*
diff --git a/Modules/_abc.c b/Modules/_abc.c
index d3e405dadb664a..9473905243d438 100644
--- a/Modules/_abc.c
+++ b/Modules/_abc.c
@@ -7,7 +7,9 @@
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_object.h"        // _PyType_GetSubclasses()
 #include "pycore_runtime.h"       // _Py_ID()
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "pycore_typeobject.h"    // _PyType_GetMRO()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
 #include "clinic/_abc.c.h"
 
 /*[clinic input]
@@ -150,12 +152,10 @@ _in_weak_set(PyObject *set, PyObject *obj)
 static PyObject *
 _destroy(PyObject *setweakref, PyObject *objweakref)
 {
-    PyObject *set;
-    set = PyWeakref_GET_OBJECT(setweakref);
-    if (set == Py_None) {
+    PyObject *set = _PyWeakref_GET_REF(setweakref);
+    if (set == NULL) {
         Py_RETURN_NONE;
     }
-    Py_INCREF(set);
     if (PySet_Discard(set, objweakref) < 0) {
         Py_DECREF(set);
         return NULL;
@@ -362,7 +362,7 @@ compute_abstract_methods(PyObject *self)
         PyObject *item = PyTuple_GET_ITEM(bases, pos);  // borrowed
         PyObject *base_abstracts, *iter;
 
-        if (_PyObject_LookupAttr(item, &_Py_ID(__abstractmethods__),
+        if (PyObject_GetOptionalAttr(item, &_Py_ID(__abstractmethods__),
                                  &base_abstracts) < 0) {
             goto error;
         }
@@ -376,7 +376,7 @@ compute_abstract_methods(PyObject *self)
         Py_DECREF(base_abstracts);
         PyObject *key, *value;
         while ((key = PyIter_Next(iter))) {
-            if (_PyObject_LookupAttr(self, key, &value) < 0) {
+            if (PyObject_GetOptionalAttr(self, key, &value) < 0) {
                 Py_DECREF(key);
                 Py_DECREF(iter);
                 goto error;
@@ -843,16 +843,16 @@ subclasscheck_check_registry(_abc_data *impl, PyObject *subclass,
     assert(i == registry_size);
 
     for (i = 0; i < registry_size; i++) {
-        PyObject *rkey = PyWeakref_GetObject(copy[i]);
-        if (rkey == NULL) {
+        PyObject *rkey;
+        if (PyWeakref_GetRef(copy[i], &rkey) < 0) {
             // Someone inject non-weakref type in the registry.
             ret = -1;
             break;
         }
-        if (rkey == Py_None) {
+
+        if (rkey == NULL) {
             continue;
         }
-        Py_INCREF(rkey);
         int r = PyObject_IsSubclass(subclass, rkey);
         Py_DECREF(rkey);
         if (r < 0) {
diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c
index 3830245abe87b3..3a11cdc926f138 100644
--- a/Modules/_asynciomodule.c
+++ b/Modules/_asynciomodule.c
@@ -3,11 +3,14 @@
 #endif
 
 #include "Python.h"
+#include "pycore_dict.h"          // _PyDict_GetItem_KnownHash()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+#include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_pyerrors.h"      // _PyErr_ClearExcState()
+#include "pycore_pylifecycle.h"   // _Py_IsInterpreterFinalizing()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_runtime_init.h"  // _Py_ID()
-#include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "structmember.h"         // PyMemberDef
+
 #include <stddef.h>               // offsetof()
 
 
@@ -119,12 +122,13 @@ typedef enum {
     PyObject *prefix##_result;                                              \
     PyObject *prefix##_source_tb;                                           \
     PyObject *prefix##_cancel_msg;                                          \
+    PyObject *prefix##_cancelled_exc;                                       \
     fut_state prefix##_state;                                               \
-    int prefix##_log_tb;                                                    \
-    int prefix##_blocking;                                                  \
-    PyObject *dict;                                                         \
-    PyObject *prefix##_weakreflist;                                         \
-    PyObject *prefix##_cancelled_exc;
+    /* These bitfields need to be at the end of the struct
+       so that these and bitfields from TaskObj are contiguous.
+    */                                                                      \
+    unsigned prefix##_log_tb: 1;                                            \
+    unsigned prefix##_blocking: 1;
 
 typedef struct {
     FutureObj_HEAD(fut)
@@ -132,13 +136,13 @@ typedef struct {
 
 typedef struct {
     FutureObj_HEAD(task)
+    unsigned task_must_cancel: 1;
+    unsigned task_log_destroy_pending: 1;
+    int task_num_cancels_requested;
     PyObject *task_fut_waiter;
     PyObject *task_coro;
     PyObject *task_name;
     PyObject *task_context;
-    int task_must_cancel;
-    int task_log_destroy_pending;
-    int task_num_cancels_requested;
 } TaskObj;
 
 typedef struct {
@@ -246,7 +250,7 @@ get_future_loop(asyncio_state *state, PyObject *fut)
         return Py_NewRef(loop);
     }
 
-    if (_PyObject_LookupAttr(fut, &_Py_ID(get_loop), &getloop) < 0) {
+    if (PyObject_GetOptionalAttr(fut, &_Py_ID(get_loop), &getloop) < 0) {
         return NULL;
     }
     if (getloop != NULL) {
@@ -489,7 +493,6 @@ future_init(FutureObj *fut, PyObject *loop)
     PyObject *res;
     int is_true;
 
-    // Same to FutureObj_clear() but not clearing fut->dict
     Py_CLEAR(fut->fut_loop);
     Py_CLEAR(fut->fut_callback0);
     Py_CLEAR(fut->fut_context0);
@@ -526,9 +529,9 @@ future_init(FutureObj *fut, PyObject *loop)
     if (is_true < 0) {
         return -1;
     }
-    if (is_true && !_Py_IsFinalizing()) {
+    if (is_true && !_Py_IsInterpreterFinalizing(_PyInterpreterState_GET())) {
         /* Only try to capture the traceback if the interpreter is not being
-           finalized.  The original motivation to add a `_Py_IsFinalizing()`
+           finalized.  The original motivation to add a `Py_IsFinalizing()`
            call was to prevent SIGSEGV when a Future is created in a __del__
            method, which is called during the interpreter shutdown and the
            traceback module is already unloaded.
@@ -814,7 +817,7 @@ FutureObj_clear(FutureObj *fut)
     Py_CLEAR(fut->fut_source_tb);
     Py_CLEAR(fut->fut_cancel_msg);
     Py_CLEAR(fut->fut_cancelled_exc);
-    Py_CLEAR(fut->dict);
+    PyObject_ClearManagedDict((PyObject *)fut);
     return 0;
 }
 
@@ -832,7 +835,7 @@ FutureObj_traverse(FutureObj *fut, visitproc visit, void *arg)
     Py_VISIT(fut->fut_source_tb);
     Py_VISIT(fut->fut_cancel_msg);
     Py_VISIT(fut->fut_cancelled_exc);
-    Py_VISIT(fut->dict);
+    PyObject_VisitManagedDict((PyObject *)fut, visit, arg);
     return 0;
 }
 
@@ -1397,7 +1400,8 @@ FutureObj_get_state(FutureObj *fut, void *Py_UNUSED(ignored))
     default:
         assert (0);
     }
-    return Py_XNewRef(ret);
+    assert(_Py_IsImmortal(ret));
+    return ret;
 }
 
 static PyObject *
@@ -1500,12 +1504,6 @@ static PyMethodDef FutureType_methods[] = {
     {NULL, NULL}        /* Sentinel */
 };
 
-static PyMemberDef FutureType_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(FutureObj, fut_weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(FutureObj, dict), READONLY},
-    {NULL},
-};
-
 #define FUTURE_COMMON_GETSETLIST                                              \
     {"_state", (getter)FutureObj_get_state, NULL, NULL},                      \
     {"_asyncio_future_blocking", (getter)FutureObj_get_blocking,              \
@@ -1536,7 +1534,6 @@ static PyType_Slot Future_slots[] = {
     {Py_tp_clear, (inquiry)FutureObj_clear},
     {Py_tp_iter, (getiterfunc)future_new_iter},
     {Py_tp_methods, FutureType_methods},
-    {Py_tp_members, FutureType_members},
     {Py_tp_getset, FutureType_getsetlist},
     {Py_tp_init, (initproc)_asyncio_Future___init__},
     {Py_tp_new, PyType_GenericNew},
@@ -1551,7 +1548,8 @@ static PyType_Spec Future_spec = {
     .name = "_asyncio.Future",
     .basicsize = sizeof(FutureObj),
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_BASETYPE |
-              Py_TPFLAGS_IMMUTABLETYPE),
+              Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_MANAGED_DICT |
+              Py_TPFLAGS_MANAGED_WEAKREF),
     .slots = Future_slots,
 };
 
@@ -1568,9 +1566,7 @@ FutureObj_dealloc(PyObject *self)
     PyTypeObject *tp = Py_TYPE(fut);
     PyObject_GC_UnTrack(self);
 
-    if (fut->fut_weakreflist != NULL) {
-        PyObject_ClearWeakRefs(self);
-    }
+    PyObject_ClearWeakRefs(self);
 
     (void)FutureObj_clear(fut);
     tp->tp_free(fut);
@@ -2047,20 +2043,23 @@ swap_current_task(asyncio_state *state, PyObject *loop, PyObject *task)
         }
         prev_task = Py_None;
     }
+    Py_INCREF(prev_task);
 
     if (task == Py_None) {
         if (_PyDict_DelItem_KnownHash(state->current_tasks, loop, hash) == -1) {
-            return NULL;
+            goto error;
         }
     } else {
         if (_PyDict_SetItem_KnownHash(state->current_tasks, loop, task, hash) == -1) {
-            return NULL;
+            goto error;
         }
     }
 
-    Py_INCREF(prev_task);
-
     return prev_task;
+
+error:
+    Py_DECREF(prev_task);
+    return NULL;
 }
 
 /* ----- Task */
@@ -2183,7 +2182,7 @@ TaskObj_traverse(TaskObj *task, visitproc visit, void *arg)
     Py_VISIT(fut->fut_source_tb);
     Py_VISIT(fut->fut_cancel_msg);
     Py_VISIT(fut->fut_cancelled_exc);
-    Py_VISIT(fut->dict);
+    PyObject_VisitManagedDict((PyObject *)fut, visit, arg);
     return 0;
 }
 
@@ -2638,12 +2637,6 @@ static PyMethodDef TaskType_methods[] = {
     {NULL, NULL}        /* Sentinel */
 };
 
-static PyMemberDef TaskType_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(TaskObj, task_weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(TaskObj, dict), READONLY},
-    {NULL},
-};
-
 static PyGetSetDef TaskType_getsetlist[] = {
     FUTURE_COMMON_GETSETLIST
     {"_log_destroy_pending", (getter)TaskObj_get_log_destroy_pending,
@@ -2662,7 +2655,6 @@ static PyType_Slot Task_slots[] = {
     {Py_tp_clear, (inquiry)TaskObj_clear},
     {Py_tp_iter, (getiterfunc)future_new_iter},
     {Py_tp_methods, TaskType_methods},
-    {Py_tp_members, TaskType_members},
     {Py_tp_getset, TaskType_getsetlist},
     {Py_tp_init, (initproc)_asyncio_Task___init__},
     {Py_tp_new, PyType_GenericNew},
@@ -2677,7 +2669,8 @@ static PyType_Spec Task_spec = {
     .name = "_asyncio.Task",
     .basicsize = sizeof(TaskObj),
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_BASETYPE |
-              Py_TPFLAGS_IMMUTABLETYPE),
+              Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_MANAGED_DICT |
+              Py_TPFLAGS_MANAGED_WEAKREF),
     .slots = Task_slots,
 };
 
@@ -2694,9 +2687,7 @@ TaskObj_dealloc(PyObject *self)
     PyTypeObject *tp = Py_TYPE(task);
     PyObject_GC_UnTrack(self);
 
-    if (task->task_weakreflist != NULL) {
-        PyObject_ClearWeakRefs(self);
-    }
+    PyObject_ClearWeakRefs(self);
 
     (void)TaskObj_clear(task);
     tp->tp_free(task);
@@ -2978,7 +2969,7 @@ task_step_handle_result_impl(asyncio_state *state, TaskObj *task, PyObject *resu
     }
 
     /* Check if `result` is a Future-compatible object */
-    if (_PyObject_LookupAttr(result, &_Py_ID(_asyncio_future_blocking), &o) < 0) {
+    if (PyObject_GetOptionalAttr(result, &_Py_ID(_asyncio_future_blocking), &o) < 0) {
         goto fail;
     }
     if (o != NULL && o != Py_None) {
@@ -3523,15 +3514,11 @@ _asyncio_current_task_impl(PyObject *module, PyObject *loop)
         Py_INCREF(loop);
     }
 
-    ret = PyDict_GetItemWithError(state->current_tasks, loop);
+    int rc = PyDict_GetItemRef(state->current_tasks, loop, &ret);
     Py_DECREF(loop);
-    if (ret == NULL && PyErr_Occurred()) {
-        return NULL;
-    }
-    else if (ret == NULL) {
+    if (rc == 0) {
         Py_RETURN_NONE;
     }
-    Py_INCREF(ret);
     return ret;
 }
 
diff --git a/Modules/_bisectmodule.c b/Modules/_bisectmodule.c
index 0773bbd191931d..9e0fd336419b44 100644
--- a/Modules/_bisectmodule.c
+++ b/Modules/_bisectmodule.c
@@ -3,8 +3,12 @@
 Converted to C by Dmitry Vasiliev (dima at hlabs.spb.ru).
 */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
+#include "pycore_call.h"          // _PyObject_CallMethod()
 
 /*[clinic input]
 module _bisect
diff --git a/Modules/_blake2/blake2b_impl.c b/Modules/_blake2/blake2b_impl.c
index c2cac98c7529eb..0c3ae5a2fac275 100644
--- a/Modules/_blake2/blake2b_impl.c
+++ b/Modules/_blake2/blake2b_impl.c
@@ -17,6 +17,7 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
+#include <stdbool.h>
 #include "Python.h"
 #include "pycore_strhex.h"       // _Py_strhex()
 
@@ -42,7 +43,8 @@ typedef struct {
     PyObject_HEAD
     blake2b_param    param;
     blake2b_state    state;
-    PyThread_type_lock lock;
+    bool use_mutex;
+    PyMutex mutex;
 } BLAKE2bObject;
 
 #include "clinic/blake2b_impl.c.h"
@@ -59,9 +61,11 @@ new_BLAKE2bObject(PyTypeObject *type)
 {
     BLAKE2bObject *self;
     self = (BLAKE2bObject *)type->tp_alloc(type, 0);
-    if (self != NULL) {
-        self->lock = NULL;
+    if (self == NULL) {
+        return NULL;
     }
+    HASHLIB_INIT_MUTEX(self);
+
     return self;
 }
 
@@ -278,18 +282,19 @@ _blake2_blake2b_update(BLAKE2bObject *self, PyObject *data)
 
     GET_BUFFER_VIEW_OR_ERROUT(data, &buf);
 
-    if (self->lock == NULL && buf.len >= HASHLIB_GIL_MINSIZE)
-        self->lock = PyThread_allocate_lock();
-
-    if (self->lock != NULL) {
-       Py_BEGIN_ALLOW_THREADS
-       PyThread_acquire_lock(self->lock, 1);
-       blake2b_update(&self->state, buf.buf, buf.len);
-       PyThread_release_lock(self->lock);
-       Py_END_ALLOW_THREADS
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        blake2b_update(&self->state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
     } else {
         blake2b_update(&self->state, buf.buf, buf.len);
     }
+
     PyBuffer_Release(&buf);
 
     Py_RETURN_NONE;
@@ -389,10 +394,6 @@ py_blake2b_dealloc(PyObject *self)
     /* Try not to leave state in memory. */
     secure_zero_memory(&obj->param, sizeof(obj->param));
     secure_zero_memory(&obj->state, sizeof(obj->state));
-    if (obj->lock) {
-        PyThread_free_lock(obj->lock);
-        obj->lock = NULL;
-    }
 
     PyTypeObject *type = Py_TYPE(self);
     PyObject_Free(self);
diff --git a/Modules/_blake2/blake2module.c b/Modules/_blake2/blake2module.c
index 0d1d88c6603684..5df9fd3df493ee 100644
--- a/Modules/_blake2/blake2module.c
+++ b/Modules/_blake2/blake2module.c
@@ -74,6 +74,12 @@ _blake2_free(void *module)
     Py_DECREF(x); \
 } while(0)
 
+#define ADD_INT_CONST(NAME, VALUE) do { \
+    if (PyModule_AddIntConstant(m, NAME, VALUE) < 0) { \
+        return -1; \
+    } \
+} while (0)
+
 static int
 blake2_exec(PyObject *m)
 {
@@ -95,10 +101,10 @@ blake2_exec(PyObject *m)
     ADD_INT(d, "MAX_KEY_SIZE", BLAKE2B_KEYBYTES);
     ADD_INT(d, "MAX_DIGEST_SIZE", BLAKE2B_OUTBYTES);
 
-    PyModule_AddIntConstant(m, "BLAKE2B_SALT_SIZE", BLAKE2B_SALTBYTES);
-    PyModule_AddIntConstant(m, "BLAKE2B_PERSON_SIZE", BLAKE2B_PERSONALBYTES);
-    PyModule_AddIntConstant(m, "BLAKE2B_MAX_KEY_SIZE", BLAKE2B_KEYBYTES);
-    PyModule_AddIntConstant(m, "BLAKE2B_MAX_DIGEST_SIZE", BLAKE2B_OUTBYTES);
+    ADD_INT_CONST("BLAKE2B_SALT_SIZE", BLAKE2B_SALTBYTES);
+    ADD_INT_CONST("BLAKE2B_PERSON_SIZE", BLAKE2B_PERSONALBYTES);
+    ADD_INT_CONST("BLAKE2B_MAX_KEY_SIZE", BLAKE2B_KEYBYTES);
+    ADD_INT_CONST("BLAKE2B_MAX_DIGEST_SIZE", BLAKE2B_OUTBYTES);
 
     /* BLAKE2s */
     st->blake2s_type = (PyTypeObject *)PyType_FromModuleAndSpec(
@@ -117,14 +123,17 @@ blake2_exec(PyObject *m)
     ADD_INT(d, "MAX_KEY_SIZE", BLAKE2S_KEYBYTES);
     ADD_INT(d, "MAX_DIGEST_SIZE", BLAKE2S_OUTBYTES);
 
-    PyModule_AddIntConstant(m, "BLAKE2S_SALT_SIZE", BLAKE2S_SALTBYTES);
-    PyModule_AddIntConstant(m, "BLAKE2S_PERSON_SIZE", BLAKE2S_PERSONALBYTES);
-    PyModule_AddIntConstant(m, "BLAKE2S_MAX_KEY_SIZE", BLAKE2S_KEYBYTES);
-    PyModule_AddIntConstant(m, "BLAKE2S_MAX_DIGEST_SIZE", BLAKE2S_OUTBYTES);
+    ADD_INT_CONST("BLAKE2S_SALT_SIZE", BLAKE2S_SALTBYTES);
+    ADD_INT_CONST("BLAKE2S_PERSON_SIZE", BLAKE2S_PERSONALBYTES);
+    ADD_INT_CONST("BLAKE2S_MAX_KEY_SIZE", BLAKE2S_KEYBYTES);
+    ADD_INT_CONST("BLAKE2S_MAX_DIGEST_SIZE", BLAKE2S_OUTBYTES);
 
     return 0;
 }
 
+#undef ADD_INT
+#undef ADD_INT_CONST
+
 static PyModuleDef_Slot _blake2_slots[] = {
     {Py_mod_exec, blake2_exec},
     {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
diff --git a/Modules/_blake2/blake2s_impl.c b/Modules/_blake2/blake2s_impl.c
index 1c47328ece13e8..3014773ab52331 100644
--- a/Modules/_blake2/blake2s_impl.c
+++ b/Modules/_blake2/blake2s_impl.c
@@ -17,6 +17,7 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
+#include <stdbool.h>
 #include "Python.h"
 #include "pycore_strhex.h"       // _Py_strhex()
 
@@ -42,7 +43,8 @@ typedef struct {
     PyObject_HEAD
     blake2s_param    param;
     blake2s_state    state;
-    PyThread_type_lock lock;
+    bool use_mutex;
+    PyMutex mutex;
 } BLAKE2sObject;
 
 #include "clinic/blake2s_impl.c.h"
@@ -59,9 +61,11 @@ new_BLAKE2sObject(PyTypeObject *type)
 {
     BLAKE2sObject *self;
     self = (BLAKE2sObject *)type->tp_alloc(type, 0);
-    if (self != NULL) {
-        self->lock = NULL;
+    if (self == NULL) {
+        return NULL;
     }
+    HASHLIB_INIT_MUTEX(self);
+
     return self;
 }
 
@@ -278,18 +282,19 @@ _blake2_blake2s_update(BLAKE2sObject *self, PyObject *data)
 
     GET_BUFFER_VIEW_OR_ERROUT(data, &buf);
 
-    if (self->lock == NULL && buf.len >= HASHLIB_GIL_MINSIZE)
-        self->lock = PyThread_allocate_lock();
-
-    if (self->lock != NULL) {
-       Py_BEGIN_ALLOW_THREADS
-       PyThread_acquire_lock(self->lock, 1);
-       blake2s_update(&self->state, buf.buf, buf.len);
-       PyThread_release_lock(self->lock);
-       Py_END_ALLOW_THREADS
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        blake2s_update(&self->state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
     } else {
         blake2s_update(&self->state, buf.buf, buf.len);
     }
+
     PyBuffer_Release(&buf);
 
     Py_RETURN_NONE;
@@ -389,10 +394,6 @@ py_blake2s_dealloc(PyObject *self)
     /* Try not to leave state in memory. */
     secure_zero_memory(&obj->param, sizeof(obj->param));
     secure_zero_memory(&obj->state, sizeof(obj->state));
-    if (obj->lock) {
-        PyThread_free_lock(obj->lock);
-        obj->lock = NULL;
-    }
 
     PyTypeObject *type = Py_TYPE(self);
     PyObject_Free(self);
diff --git a/Modules/_blake2/clinic/blake2b_impl.c.h b/Modules/_blake2/clinic/blake2b_impl.c.h
index 99b0f098cc2b27..47d62717eb76e7 100644
--- a/Modules/_blake2/clinic/blake2b_impl.c.h
+++ b/Modules/_blake2/clinic/blake2b_impl.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_long.h"          // _PyLong_UnsignedLong_Converter()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(py_blake2b_new__doc__,
 "blake2b(data=b\'\', /, *, digest_size=_blake2.blake2b.MAX_DIGEST_SIZE,\n"
@@ -85,7 +86,7 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         goto skip_optional_kwonly;
     }
     if (fastargs[1]) {
-        digest_size = _PyLong_AsInt(fastargs[1]);
+        digest_size = PyLong_AsInt(fastargs[1]);
         if (digest_size == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -97,10 +98,6 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         if (PyObject_GetBuffer(fastargs[2], &key, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&key, 'C')) {
-            _PyArg_BadArgument("blake2b", "argument 'key'", "contiguous buffer", fastargs[2]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -109,10 +106,6 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         if (PyObject_GetBuffer(fastargs[3], &salt, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&salt, 'C')) {
-            _PyArg_BadArgument("blake2b", "argument 'salt'", "contiguous buffer", fastargs[3]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -121,16 +114,12 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         if (PyObject_GetBuffer(fastargs[4], &person, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&person, 'C')) {
-            _PyArg_BadArgument("blake2b", "argument 'person'", "contiguous buffer", fastargs[4]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
     }
     if (fastargs[5]) {
-        fanout = _PyLong_AsInt(fastargs[5]);
+        fanout = PyLong_AsInt(fastargs[5]);
         if (fanout == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -139,7 +128,7 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[6]) {
-        depth = _PyLong_AsInt(fastargs[6]);
+        depth = PyLong_AsInt(fastargs[6]);
         if (depth == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -164,7 +153,7 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[9]) {
-        node_depth = _PyLong_AsInt(fastargs[9]);
+        node_depth = PyLong_AsInt(fastargs[9]);
         if (node_depth == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -173,7 +162,7 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[10]) {
-        inner_size = _PyLong_AsInt(fastargs[10]);
+        inner_size = PyLong_AsInt(fastargs[10]);
         if (inner_size == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -276,4 +265,4 @@ _blake2_blake2b_hexdigest(BLAKE2bObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _blake2_blake2b_hexdigest_impl(self);
 }
-/*[clinic end generated code: output=996b4fe396824797 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e18eeaee40623bfc input=a9049054013a1b77]*/
diff --git a/Modules/_blake2/clinic/blake2s_impl.c.h b/Modules/_blake2/clinic/blake2s_impl.c.h
index 9b821fbcd62cdb..7a0f6eeff5b5b5 100644
--- a/Modules/_blake2/clinic/blake2s_impl.c.h
+++ b/Modules/_blake2/clinic/blake2s_impl.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_long.h"          // _PyLong_UnsignedLong_Converter()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(py_blake2s_new__doc__,
 "blake2s(data=b\'\', /, *, digest_size=_blake2.blake2s.MAX_DIGEST_SIZE,\n"
@@ -85,7 +86,7 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         goto skip_optional_kwonly;
     }
     if (fastargs[1]) {
-        digest_size = _PyLong_AsInt(fastargs[1]);
+        digest_size = PyLong_AsInt(fastargs[1]);
         if (digest_size == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -97,10 +98,6 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         if (PyObject_GetBuffer(fastargs[2], &key, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&key, 'C')) {
-            _PyArg_BadArgument("blake2s", "argument 'key'", "contiguous buffer", fastargs[2]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -109,10 +106,6 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         if (PyObject_GetBuffer(fastargs[3], &salt, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&salt, 'C')) {
-            _PyArg_BadArgument("blake2s", "argument 'salt'", "contiguous buffer", fastargs[3]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -121,16 +114,12 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         if (PyObject_GetBuffer(fastargs[4], &person, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&person, 'C')) {
-            _PyArg_BadArgument("blake2s", "argument 'person'", "contiguous buffer", fastargs[4]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
     }
     if (fastargs[5]) {
-        fanout = _PyLong_AsInt(fastargs[5]);
+        fanout = PyLong_AsInt(fastargs[5]);
         if (fanout == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -139,7 +128,7 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[6]) {
-        depth = _PyLong_AsInt(fastargs[6]);
+        depth = PyLong_AsInt(fastargs[6]);
         if (depth == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -164,7 +153,7 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[9]) {
-        node_depth = _PyLong_AsInt(fastargs[9]);
+        node_depth = PyLong_AsInt(fastargs[9]);
         if (node_depth == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -173,7 +162,7 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[10]) {
-        inner_size = _PyLong_AsInt(fastargs[10]);
+        inner_size = PyLong_AsInt(fastargs[10]);
         if (inner_size == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -276,4 +265,4 @@ _blake2_blake2s_hexdigest(BLAKE2sObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _blake2_blake2s_hexdigest_impl(self);
 }
-/*[clinic end generated code: output=bd0fb7639e450618 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=24690e4e2586cafd input=a9049054013a1b77]*/
diff --git a/Modules/_bz2module.c b/Modules/_bz2module.c
index 97bd44b4ac9694..3d0d4ee5e79c2b 100644
--- a/Modules/_bz2module.c
+++ b/Modules/_bz2module.c
@@ -1,12 +1,14 @@
 /* _bz2 - Low-level Python interface to libbzip2. */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
 
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
 
 #include <bzlib.h>
 #include <stdio.h>
+#include <stddef.h>               // offsetof()
 
 // Blocks output buffer wrappers
 #include "pycore_blocks_output_buffer.h"
@@ -114,7 +116,7 @@ typedef struct {
 typedef struct {
     PyObject_HEAD
     bz_stream bzs;
-    char eof;           /* T_BOOL expects a char */
+    char eof;           /* Py_T_BOOL expects a char */
     PyObject *unused_data;
     char needs_input;
     char *input_buffer;
@@ -716,11 +718,11 @@ PyDoc_STRVAR(BZ2Decompressor_needs_input_doc,
 "True if more input is needed before more decompressed data can be produced.");
 
 static PyMemberDef BZ2Decompressor_members[] = {
-    {"eof", T_BOOL, offsetof(BZ2Decompressor, eof),
-     READONLY, BZ2Decompressor_eof__doc__},
-    {"unused_data", T_OBJECT_EX, offsetof(BZ2Decompressor, unused_data),
-     READONLY, BZ2Decompressor_unused_data__doc__},
-    {"needs_input", T_BOOL, offsetof(BZ2Decompressor, needs_input), READONLY,
+    {"eof", Py_T_BOOL, offsetof(BZ2Decompressor, eof),
+     Py_READONLY, BZ2Decompressor_eof__doc__},
+    {"unused_data", Py_T_OBJECT_EX, offsetof(BZ2Decompressor, unused_data),
+     Py_READONLY, BZ2Decompressor_unused_data__doc__},
+    {"needs_input", Py_T_BOOL, offsetof(BZ2Decompressor, needs_input), Py_READONLY,
      BZ2Decompressor_needs_input_doc},
     {NULL}
 };
diff --git a/Modules/_codecsmodule.c b/Modules/_codecsmodule.c
index 777c753bd7c2a9..c31c1b6d6f2bbc 100644
--- a/Modules/_codecsmodule.c
+++ b/Modules/_codecsmodule.c
@@ -30,8 +30,8 @@ Copyright (c) Corporation for National Research Initiatives.
 
    ------------------------------------------------------------------------ */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
+#include "pycore_codecs.h"        // _PyCodec_Lookup()
 
 #ifdef MS_WINDOWS
 #include <windows.h>
diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index 9a81531bdffb16..c8cd53de5e2262 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -1,9 +1,10 @@
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_dict.h"          // _PyDict_GetItem_KnownHash()
 #include "pycore_long.h"          // _PyLong_GetZero()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_typeobject.h"    // _PyType_GetModuleState()
-#include "structmember.h"         // PyMemberDef
+
 #include <stddef.h>
 
 typedef struct {
@@ -1630,7 +1631,7 @@ static PyMethodDef deque_methods[] = {
 };
 
 static PyMemberDef deque_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(dequeobject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(dequeobject, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -2054,7 +2055,7 @@ static PyMethodDef defdict_methods[] = {
 };
 
 static PyMemberDef defdict_members[] = {
-    {"default_factory", T_OBJECT,
+    {"default_factory", _Py_T_OBJECT,
      offsetof(defdictobject, default_factory), 0,
      PyDoc_STR("Factory for default value called by __missing__().")},
     {NULL}
@@ -2466,7 +2467,7 @@ tuplegetter_repr(_tuplegetterobject *self)
 
 
 static PyMemberDef tuplegetter_members[] = {
-    {"__doc__",  T_OBJECT, offsetof(_tuplegetterobject, doc), 0},
+    {"__doc__",  _Py_T_OBJECT, offsetof(_tuplegetterobject, doc), 0},
     {0}
 };
 
diff --git a/Modules/_cryptmodule.c b/Modules/_cryptmodule.c
deleted file mode 100644
index 75035084c9cd29..00000000000000
--- a/Modules/_cryptmodule.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/* cryptmodule.c - by Steve Majewski
- */
-
-#include "Python.h"
-
-#include <sys/types.h>
-#ifdef HAVE_CRYPT_H
-#include <crypt.h>
-#endif
-
-/* Module crypt */
-
-/*[clinic input]
-module crypt
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=c6252cf4f2f2ae81]*/
-
-#include "clinic/_cryptmodule.c.h"
-
-/*[clinic input]
-crypt.crypt
-
-    word: str
-    salt: str
-    /
-
-Hash a *word* with the given *salt* and return the hashed password.
-
-*word* will usually be a user's password.  *salt* (either a random 2 or 16
-character string, possibly prefixed with $digit$ to indicate the method)
-will be used to perturb the encryption algorithm and produce distinct
-results for a given *word*.
-
-[clinic start generated code]*/
-
-static PyObject *
-crypt_crypt_impl(PyObject *module, const char *word, const char *salt)
-/*[clinic end generated code: output=0512284a03d2803c input=0e8edec9c364352b]*/
-{
-    char *crypt_result;
-#ifdef HAVE_CRYPT_R
-    struct crypt_data data;
-    memset(&data, 0, sizeof(data));
-    crypt_result = crypt_r(word, salt, &data);
-#else
-    crypt_result = crypt(word, salt);
-#endif
-    if (crypt_result == NULL) {
-        return PyErr_SetFromErrno(PyExc_OSError);
-    }
-    return Py_BuildValue("s", crypt_result);
-}
-
-
-static PyMethodDef crypt_methods[] = {
-    CRYPT_CRYPT_METHODDEF
-    {NULL,              NULL}           /* sentinel */
-};
-
-static PyModuleDef_Slot _crypt_slots[] = {
-    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
-    {0, NULL}
-};
-
-static struct PyModuleDef cryptmodule = {
-    PyModuleDef_HEAD_INIT,
-    "_crypt",
-    NULL,
-    0,
-    crypt_methods,
-    _crypt_slots,
-    NULL,
-    NULL,
-    NULL
-};
-
-PyMODINIT_FUNC
-PyInit__crypt(void)
-{
-    return PyModuleDef_Init(&cryptmodule);
-}
diff --git a/Modules/_csv.c b/Modules/_csv.c
index 9ab2ad266c2739..ae6b6457ffad9a 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -10,8 +10,14 @@ module instead.
 
 #define MODULE_VERSION "1.0"
 
+// clinic/_csv.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
+#include <stddef.h>               // offsetof()
 #include <stdbool.h>
 
 /*[clinic input]
@@ -154,15 +160,9 @@ static PyObject *
 get_dialect_from_registry(PyObject *name_obj, _csvstate *module_state)
 {
     PyObject *dialect_obj;
-
-    dialect_obj = PyDict_GetItemWithError(module_state->dialects, name_obj);
-    if (dialect_obj == NULL) {
-        if (!PyErr_Occurred())
-            PyErr_Format(module_state->error_obj, "unknown dialect");
+    if (PyDict_GetItemRef(module_state->dialects, name_obj, &dialect_obj) == 0) {
+        PyErr_SetString(module_state->error_obj, "unknown dialect");
     }
-    else
-        Py_INCREF(dialect_obj);
-
     return dialect_obj;
 }
 
@@ -232,7 +232,7 @@ _set_int(const char *name, int *target, PyObject *src, int dflt)
                          "\"%s\" must be an integer", name);
             return -1;
         }
-        value = _PyLong_AsInt(src);
+        value = PyLong_AsInt(src);
         if (value == -1 && PyErr_Occurred()) {
             return -1;
         }
@@ -266,7 +266,6 @@ _set_char_or_none(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt
                     name);
                 return -1;
             }
-            /* PyUnicode_READY() is called in PyUnicode_GetLength() */
             *target = PyUnicode_READ_CHAR(src, 0);
         }
     }
@@ -296,7 +295,6 @@ _set_char(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt)
                          name);
             return -1;
         }
-        /* PyUnicode_READY() is called in PyUnicode_GetLength() */
         *target = PyUnicode_READ_CHAR(src, 0);
     }
     return 0;
@@ -316,8 +314,6 @@ _set_str(const char *name, PyObject **target, PyObject *src, const char *dflt)
             return -1;
         }
         else {
-            if (PyUnicode_READY(src) == -1)
-                return -1;
             Py_XSETREF(*target, Py_NewRef(src));
         }
     }
@@ -340,9 +336,9 @@ dialect_check_quoting(int quoting)
 #define D_OFF(x) offsetof(DialectObj, x)
 
 static struct PyMemberDef Dialect_memberlist[] = {
-    { "skipinitialspace",   T_BOOL, D_OFF(skipinitialspace), READONLY },
-    { "doublequote",        T_BOOL, D_OFF(doublequote), READONLY },
-    { "strict",             T_BOOL, D_OFF(strict), READONLY },
+    { "skipinitialspace",   Py_T_BOOL, D_OFF(skipinitialspace), Py_READONLY },
+    { "doublequote",        Py_T_BOOL, D_OFF(doublequote), Py_READONLY },
+    { "strict",             Py_T_BOOL, D_OFF(strict), Py_READONLY },
     { NULL }
 };
 
@@ -904,10 +900,6 @@ Reader_iternext(ReaderObj *self)
             Py_DECREF(lineobj);
             return NULL;
         }
-        if (PyUnicode_READY(lineobj) == -1) {
-            Py_DECREF(lineobj);
-            return NULL;
-        }
         ++self->line_num;
         kind = PyUnicode_KIND(lineobj);
         data = PyUnicode_DATA(lineobj);
@@ -978,8 +970,8 @@ static struct PyMethodDef Reader_methods[] = {
 #define R_OFF(x) offsetof(ReaderObj, x)
 
 static struct PyMemberDef Reader_memberlist[] = {
-    { "dialect", T_OBJECT, R_OFF(dialect), READONLY },
-    { "line_num", T_ULONG, R_OFF(line_num), READONLY },
+    { "dialect", _Py_T_OBJECT, R_OFF(dialect), Py_READONLY },
+    { "line_num", Py_T_ULONG, R_OFF(line_num), Py_READONLY },
     { NULL }
 };
 
@@ -1185,8 +1177,6 @@ join_append(WriterObj *self, PyObject *field, int quoted)
     Py_ssize_t rec_len;
 
     if (field != NULL) {
-        if (PyUnicode_READY(field) == -1)
-            return 0;
         field_kind = PyUnicode_KIND(field);
         field_data = PyUnicode_DATA(field);
         field_len = PyUnicode_GET_LENGTH(field);
@@ -1374,7 +1364,7 @@ static struct PyMethodDef Writer_methods[] = {
 #define W_OFF(x) offsetof(WriterObj, x)
 
 static struct PyMemberDef Writer_memberlist[] = {
-    { "dialect", T_OBJECT, W_OFF(dialect), READONLY },
+    { "dialect", _Py_T_OBJECT, W_OFF(dialect), Py_READONLY },
     { NULL }
 };
 
@@ -1460,7 +1450,7 @@ csv_writer(PyObject *module, PyObject *args, PyObject *keyword_args)
         Py_DECREF(self);
         return NULL;
     }
-    if (_PyObject_LookupAttr(output_file,
+    if (PyObject_GetOptionalAttr(output_file,
                              module_state->str_write,
                              &self->write) < 0) {
         Py_DECREF(self);
@@ -1515,8 +1505,6 @@ csv_register_dialect(PyObject *module, PyObject *args, PyObject *kwargs)
                         "dialect name must be a string");
         return NULL;
     }
-    if (PyUnicode_READY(name_obj) == -1)
-        return NULL;
     dialect = _call_dialect(module_state, dialect_obj, kwargs);
     if (dialect == NULL)
         return NULL;
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 534ef8c1d6cf8f..f909a9496b6526 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -101,7 +101,6 @@ bytes(cdata)
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
-#define PY_SSIZE_T_CLEAN
 
 #include "Python.h"
 // windows.h must be included before pycore internal headers
@@ -111,7 +110,10 @@ bytes(cdata)
 
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCall()
-#include "structmember.h"         // PyMemberDef
+#ifdef MS_WIN32
+#  include "pycore_modsupport.h"  // _PyArg_NoKeywords()
+#endif
+
 
 #include <ffi.h>
 #ifdef MS_WIN32
@@ -182,7 +184,7 @@ _DictRemover_call(PyObject *myself, PyObject *args, PyObject *kw)
     DictRemoverObject *self = (DictRemoverObject *)myself;
     if (self->key && self->dict) {
         if (-1 == PyDict_DelItem(self->dict, self->key)) {
-            _PyErr_WriteUnraisableMsg("on calling _ctypes.DictRemover", NULL);
+            PyErr_FormatUnraisable("Exception ignored on calling _ctypes.DictRemover");
         }
         Py_CLEAR(self->key);
         Py_CLEAR(self->dict);
@@ -238,20 +240,16 @@ PyDict_SetItemProxy(PyObject *dict, PyObject *key, PyObject *item)
     return result;
 }
 
-PyObject *
-PyDict_GetItemProxy(PyObject *dict, PyObject *key)
+static int
+_PyDict_GetItemProxy(PyObject *dict, PyObject *key, PyObject **presult)
 {
-    PyObject *result;
-    PyObject *item = PyDict_GetItemWithError(dict, key);
-
-    if (item == NULL)
-        return NULL;
-    if (!PyWeakref_CheckProxy(item))
-        return item;
-    result = PyWeakref_GET_OBJECT(item);
-    if (result == Py_None)
-        return NULL;
-    return result;
+    int rc = PyDict_GetItemRef(dict, key, presult);
+    PyObject *item = *presult;
+    if (item && PyWeakref_CheckProxy(item)) {
+        rc = PyWeakref_GetRef(item, presult);
+        Py_DECREF(item);
+    }
+    return rc;
 }
 
 /******************************************************************/
@@ -554,18 +552,19 @@ StructUnionType_new(PyTypeObject *type, PyObject *args, PyObject *kwds, int isSt
 
     dict->paramfunc = StructUnionType_paramfunc;
 
-    fields = PyDict_GetItemWithError((PyObject *)dict, &_Py_ID(_fields_));
+    if (PyDict_GetItemRef((PyObject *)dict, &_Py_ID(_fields_), &fields) < 0) {
+        Py_DECREF(result);
+        return NULL;
+    }
     if (fields) {
         if (PyObject_SetAttr((PyObject *)result, &_Py_ID(_fields_), fields) < 0) {
             Py_DECREF(result);
+            Py_DECREF(fields);
             return NULL;
         }
+        Py_DECREF(fields);
         return (PyObject *)result;
     }
-    else if (PyErr_Occurred()) {
-        Py_DECREF(result);
-        return NULL;
-    }
     else {
         StgDictObject *basedict = PyType_stgdict((PyObject *)result->tp_base);
 
@@ -843,7 +842,7 @@ CDataType_from_param(PyObject *type, PyObject *value)
         return NULL;
     }
 
-    if (_PyObject_LookupAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
+    if (PyObject_GetOptionalAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
         return NULL;
     }
     if (as_parameter) {
@@ -1099,11 +1098,15 @@ PyCPointerType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
     stgdict->paramfunc = PyCPointerType_paramfunc;
     stgdict->flags |= TYPEFLAG_ISPOINTER;
 
-    proto = PyDict_GetItemWithError(typedict, &_Py_ID(_type_)); /* Borrowed ref */
+    if (PyDict_GetItemRef(typedict, &_Py_ID(_type_), &proto) < 0) {
+        Py_DECREF((PyObject *)stgdict);
+        return NULL;
+    }
     if (proto) {
         StgDictObject *itemdict;
         const char *current_format;
         if (-1 == PyCPointerType_SetProto(stgdict, proto)) {
+            Py_DECREF(proto);
             Py_DECREF((PyObject *)stgdict);
             return NULL;
         }
@@ -1123,15 +1126,12 @@ PyCPointerType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         } else {
             stgdict->format = _ctypes_alloc_format_string("&", current_format);
         }
+        Py_DECREF(proto);
         if (stgdict->format == NULL) {
             Py_DECREF((PyObject *)stgdict);
             return NULL;
         }
     }
-    else if (PyErr_Occurred()) {
-        Py_DECREF((PyObject *)stgdict);
-        return NULL;
-    }
 
     /* create the new instance (which is a class,
        since we are a metatype!) */
@@ -1487,7 +1487,7 @@ PyCArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
     stgdict = NULL;
     type_attr = NULL;
 
-    if (_PyObject_LookupAttr((PyObject *)result, &_Py_ID(_length_), &length_attr) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *)result, &_Py_ID(_length_), &length_attr) < 0) {
         goto error;
     }
     if (!length_attr) {
@@ -1520,7 +1520,7 @@ PyCArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         goto error;
     }
 
-    if (_PyObject_LookupAttr((PyObject *)result, &_Py_ID(_type_), &type_attr) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *)result, &_Py_ID(_type_), &type_attr) < 0) {
         goto error;
     }
     if (!type_attr) {
@@ -1712,7 +1712,7 @@ c_wchar_p_from_param(PyObject *type, PyObject *value)
         }
     }
 
-    if (_PyObject_LookupAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
+    if (PyObject_GetOptionalAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
         return NULL;
     }
     if (as_parameter) {
@@ -1720,9 +1720,9 @@ c_wchar_p_from_param(PyObject *type, PyObject *value)
         Py_DECREF(as_parameter);
         return value;
     }
-    /* XXX better message */
-    PyErr_SetString(PyExc_TypeError,
-                    "wrong type");
+    PyErr_Format(PyExc_TypeError,
+                 "'%.200s' object cannot be interpreted "
+                 "as ctypes.c_wchar_p", Py_TYPE(value)->tp_name);
     return NULL;
 }
 
@@ -1776,7 +1776,7 @@ c_char_p_from_param(PyObject *type, PyObject *value)
         }
     }
 
-    if (_PyObject_LookupAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
+    if (PyObject_GetOptionalAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
         return NULL;
     }
     if (as_parameter) {
@@ -1784,9 +1784,9 @@ c_char_p_from_param(PyObject *type, PyObject *value)
         Py_DECREF(as_parameter);
         return value;
     }
-    /* XXX better message */
-    PyErr_SetString(PyExc_TypeError,
-                    "wrong type");
+    PyErr_Format(PyExc_TypeError,
+                 "'%.200s' object cannot be interpreted "
+                 "as ctypes.c_char_p", Py_TYPE(value)->tp_name);
     return NULL;
 }
 
@@ -1911,7 +1911,7 @@ c_void_p_from_param(PyObject *type, PyObject *value)
         }
     }
 
-    if (_PyObject_LookupAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
+    if (PyObject_GetOptionalAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
         return NULL;
     }
     if (as_parameter) {
@@ -1919,9 +1919,9 @@ c_void_p_from_param(PyObject *type, PyObject *value)
         Py_DECREF(as_parameter);
         return value;
     }
-    /* XXX better message */
-    PyErr_SetString(PyExc_TypeError,
-                    "wrong type");
+    PyErr_Format(PyExc_TypeError,
+                 "'%.200s' object cannot be interpreted "
+                 "as ctypes.c_void_p", Py_TYPE(value)->tp_name);
     return NULL;
 }
 
@@ -2046,7 +2046,7 @@ PyCSimpleType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
     if (result == NULL)
         return NULL;
 
-    if (_PyObject_LookupAttr((PyObject *)result, &_Py_ID(_type_), &proto) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *)result, &_Py_ID(_type_), &proto) < 0) {
         return NULL;
     }
     if (!proto) {
@@ -2258,7 +2258,7 @@ PyCSimpleType_from_param(PyObject *type, PyObject *value)
     PyObject *exc = PyErr_GetRaisedException();
     Py_DECREF(parg);
 
-    if (_PyObject_LookupAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
+    if (PyObject_GetOptionalAttr(value, &_Py_ID(_as_parameter_), &as_parameter) < 0) {
         Py_XDECREF(exc);
         return NULL;
     }
@@ -2421,7 +2421,7 @@ converters_from_argtypes(PyObject *ob)
         }
  */
 
-        if (_PyObject_LookupAttr(tp, &_Py_ID(from_param), &cnv) <= 0) {
+        if (PyObject_GetOptionalAttr(tp, &_Py_ID(from_param), &cnv) <= 0) {
             Py_DECREF(converters);
             Py_DECREF(ob);
             if (!PyErr_Occurred()) {
@@ -2450,58 +2450,61 @@ make_funcptrtype_dict(StgDictObject *stgdict)
     stgdict->getfunc = NULL;
     stgdict->ffi_type_pointer = ffi_type_pointer;
 
-    ob = PyDict_GetItemWithError((PyObject *)stgdict, &_Py_ID(_flags_));
+    if (PyDict_GetItemRef((PyObject *)stgdict, &_Py_ID(_flags_), &ob) < 0) {
+        return -1;
+    }
     if (!ob || !PyLong_Check(ob)) {
-        if (!PyErr_Occurred()) {
-            PyErr_SetString(PyExc_TypeError,
+        PyErr_SetString(PyExc_TypeError,
                 "class must define _flags_ which must be an integer");
-        }
+        Py_XDECREF(ob);
         return -1;
     }
     stgdict->flags = PyLong_AsUnsignedLongMask(ob) | TYPEFLAG_ISPOINTER;
+    Py_DECREF(ob);
 
     /* _argtypes_ is optional... */
-    ob = PyDict_GetItemWithError((PyObject *)stgdict, &_Py_ID(_argtypes_));
+    if (PyDict_GetItemRef((PyObject *)stgdict, &_Py_ID(_argtypes_), &ob) < 0) {
+        return -1;
+    }
     if (ob) {
         converters = converters_from_argtypes(ob);
-        if (!converters)
+        if (!converters) {
+            Py_DECREF(ob);
             return -1;
-        stgdict->argtypes = Py_NewRef(ob);
+        }
+        stgdict->argtypes = ob;
         stgdict->converters = converters;
     }
-    else if (PyErr_Occurred()) {
+
+    if (PyDict_GetItemRef((PyObject *)stgdict, &_Py_ID(_restype_), &ob) < 0) {
         return -1;
     }
-
-    ob = PyDict_GetItemWithError((PyObject *)stgdict, &_Py_ID(_restype_));
     if (ob) {
         if (ob != Py_None && !PyType_stgdict(ob) && !PyCallable_Check(ob)) {
             PyErr_SetString(PyExc_TypeError,
                 "_restype_ must be a type, a callable, or None");
+            Py_DECREF(ob);
             return -1;
         }
-        stgdict->restype = Py_NewRef(ob);
-        if (_PyObject_LookupAttr(ob, &_Py_ID(_check_retval_),
+        stgdict->restype = ob;
+        if (PyObject_GetOptionalAttr(ob, &_Py_ID(_check_retval_),
                                    &stgdict->checker) < 0)
         {
             return -1;
         }
     }
-    else if (PyErr_Occurred()) {
+/* XXX later, maybe.
+    if (PyDict_GetItemRef((PyObject *)stgdict, &_Py _ID(_errcheck_), &ob) < 0) {
         return -1;
     }
-/* XXX later, maybe.
-    ob = _PyDict_GetItemIdWithError((PyObject *)stgdict, &PyId__errcheck_);
     if (ob) {
         if (!PyCallable_Check(ob)) {
             PyErr_SetString(PyExc_TypeError,
                 "_errcheck_ must be callable");
+            Py_DECREF(ob);
             return -1;
         }
-        stgdict->errcheck = Py_NewRef(ob);
-    }
-    else if (PyErr_Occurred()) {
-        return -1;
+        stgdict->errcheck = ob;
     }
 */
     return 0;
@@ -2751,14 +2754,14 @@ PyCData_dealloc(PyObject *self)
 }
 
 static PyMemberDef PyCData_members[] = {
-    { "_b_base_", T_OBJECT,
-      offsetof(CDataObject, b_base), READONLY,
+    { "_b_base_", _Py_T_OBJECT,
+      offsetof(CDataObject, b_base), Py_READONLY,
       "the base object" },
-    { "_b_needsfree_", T_INT,
-      offsetof(CDataObject, b_needsfree), READONLY,
+    { "_b_needsfree_", Py_T_INT,
+      offsetof(CDataObject, b_needsfree), Py_READONLY,
       "whether the object owns the memory or not" },
-    { "_objects", T_OBJECT,
-      offsetof(CDataObject, b_objects), READONLY,
+    { "_objects", _Py_T_OBJECT,
+      offsetof(CDataObject, b_objects), Py_READONLY,
       "internal objects tree (NEVER CHANGE THIS OBJECT!)"},
     { NULL },
 };
@@ -3267,7 +3270,7 @@ PyCFuncPtr_set_restype(PyCFuncPtrObject *self, PyObject *ob, void *Py_UNUSED(ign
                         "restype must be a type, a callable, or None");
         return -1;
     }
-    if (_PyObject_LookupAttr(ob, &_Py_ID(_check_retval_), &checker) < 0) {
+    if (PyObject_GetOptionalAttr(ob, &_Py_ID(_check_retval_), &checker) < 0) {
         return -1;
     }
     oldchecker = self->checker;
@@ -3801,13 +3804,12 @@ _get_arg(int *pindex, PyObject *name, PyObject *defval, PyObject *inargs, PyObje
         return Py_NewRef(v);
     }
     if (kwds && name) {
-        v = PyDict_GetItemWithError(kwds, name);
+        if (PyDict_GetItemRef(kwds, name, &v) < 0) {
+            return NULL;
+        }
         if (v) {
             ++*pindex;
-            return Py_NewRef(v);
-        }
-        else if (PyErr_Occurred()) {
-            return NULL;
+            return v;
         }
     }
     if (defval) {
@@ -4785,6 +4787,16 @@ static PyMappingMethods Array_as_mapping = {
     Array_ass_subscript,
 };
 
+PyDoc_STRVAR(array_doc,
+"Abstract base class for arrays.\n"
+"\n"
+"The recommended way to create concrete array types is by multiplying any\n"
+"ctypes data type with a non-negative integer. Alternatively, you can subclass\n"
+"this type and define _length_ and _type_ class variables. Array elements can\n"
+"be read and written using standard subscript and slice accesses for slice\n"
+"reads, the resulting object is not itself an Array."
+);
+
 PyTypeObject PyCArray_Type = {
     PyVarObject_HEAD_INIT(NULL, 0)
     "_ctypes.Array",
@@ -4805,8 +4817,8 @@ PyTypeObject PyCArray_Type = {
     0,                                          /* tp_getattro */
     0,                                          /* tp_setattro */
     &PyCData_as_buffer,                         /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
-    PyDoc_STR("XXX to be provided"),            /* tp_doc */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,   /* tp_flags */
+    array_doc,                                  /* tp_doc */
     (traverseproc)PyCData_traverse,             /* tp_traverse */
     (inquiry)PyCData_clear,                     /* tp_clear */
     0,                                          /* tp_richcompare */
@@ -4832,7 +4844,6 @@ PyCArrayType_from_ctype(PyObject *itemtype, Py_ssize_t length)
 {
     static PyObject *cache;
     PyObject *key;
-    PyObject *result;
     char name[256];
     PyObject *len;
 
@@ -4848,17 +4859,14 @@ PyCArrayType_from_ctype(PyObject *itemtype, Py_ssize_t length)
     Py_DECREF(len);
     if (!key)
         return NULL;
-    result = PyDict_GetItemProxy(cache, key);
-    if (result) {
-        Py_INCREF(result);
+
+    PyObject *result;
+    if (_PyDict_GetItemProxy(cache, key, &result) != 0) {
+        // found or error
         Py_DECREF(key);
         return result;
     }
-    else if (PyErr_Occurred()) {
-        Py_DECREF(key);
-        return NULL;
-    }
-
+    // not found
     if (!PyType_Check(itemtype)) {
         PyErr_SetString(PyExc_TypeError,
                         "Expected a type object");
@@ -5733,15 +5741,9 @@ _ctypes_add_objects(PyObject *mod)
 {
 #define MOD_ADD(name, expr) \
     do { \
-        PyObject *obj = (expr); \
-        if (obj == NULL) { \
-            return -1; \
-        } \
-        if (PyModule_AddObjectRef(mod, name, obj) < 0) { \
-            Py_DECREF(obj); \
+        if (PyModule_Add(mod, name, (expr)) < 0) { \
             return -1; \
         } \
-        Py_DECREF(obj); \
     } while (0)
 
     MOD_ADD("_pointer_type_cache", Py_NewRef(_ctypes_ptrtype_cache));
diff --git a/Modules/_ctypes/_ctypes_test.c b/Modules/_ctypes/_ctypes_test.c
index ddfb2c8a332a9e..fc9fc131f6249a 100644
--- a/Modules/_ctypes/_ctypes_test.c
+++ b/Modules/_ctypes/_ctypes_test.c
@@ -1,10 +1,27 @@
-#include <Python.h>
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
 
-#ifdef MS_WIN32
-#include <windows.h>
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
 #endif
 
+// gh-85283: On Windows, Py_LIMITED_API requires Py_BUILD_CORE to not attempt
+// linking the extension to python3.lib (which fails). Py_BUILD_CORE_MODULE is
+// needed to import Python symbols. Then Python.h undefines Py_BUILD_CORE and
+// Py_BUILD_CORE_MODULE if Py_LIMITED_API is defined.
+#define Py_BUILD_CORE
+#define Py_BUILD_CORE_MODULE
+
+#include <Python.h>
+
+#include <stdio.h>                // printf()
 #include <stdlib.h>               // qsort()
+#include <string.h>               // memset()
+#ifdef MS_WIN32
+#  include <windows.h>
+#endif
 
 #define EXPORT(x) Py_EXPORTED_SYMBOL x
 
@@ -133,6 +150,42 @@ _testfunc_array_in_struct2a(Test3B in)
     return result;
 }
 
+/*
+ * See gh-110190. structs containing arrays of up to four floating point types
+ * (max 32 bytes) are passed in registers on Arm.
+ */
+
+typedef struct {
+    double data[4];
+} Test3C;
+
+EXPORT(Test3C)
+_testfunc_array_in_struct_set_defaults_3C(void)
+{
+    Test3C s;
+    s.data[0] = 1.0;
+    s.data[1] = 2.0;
+    s.data[2] = 3.0;
+    s.data[3] = 4.0;
+    return s;
+}
+
+typedef struct {
+    double data[5];
+} Test3D;
+
+EXPORT(Test3D)
+_testfunc_array_in_struct_set_defaults_3D(void)
+{
+    Test3D s;
+    s.data[0] = 1.0;
+    s.data[1] = 2.0;
+    s.data[2] = 3.0;
+    s.data[3] = 4.0;
+    s.data[4] = 5.0;
+    return s;
+}
+
 typedef union {
     long a_long;
     struct {
diff --git a/Modules/_ctypes/callbacks.c b/Modules/_ctypes/callbacks.c
index 8e694ba852c1d4..154e9f43983cdb 100644
--- a/Modules/_ctypes/callbacks.c
+++ b/Modules/_ctypes/callbacks.c
@@ -8,9 +8,8 @@
 #  include <windows.h>
 #endif
 
-#include "pycore_call.h"            // _PyObject_CallNoArgs()
-#include "pycore_runtime.h"         // _PyRuntime
-#include "pycore_global_objects.h"  // _Py_ID()
+#include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_runtime.h"       // _Py_ID()
 
 #include <stdbool.h>
 
@@ -216,8 +215,9 @@ static void _CallPythonObject(void *mem,
 
     result = PyObject_Vectorcall(callable, args, nargs, NULL);
     if (result == NULL) {
-        _PyErr_WriteUnraisableMsg("on calling ctypes callback function",
-                                  callable);
+        PyErr_FormatUnraisable(
+                "Exception ignored on calling ctypes callback function %R",
+                callable);
     }
 
 #ifdef MS_WIN32
@@ -258,9 +258,10 @@ static void _CallPythonObject(void *mem,
 
         if (keep == NULL) {
             /* Could not convert callback result. */
-            _PyErr_WriteUnraisableMsg("on converting result "
-                                      "of ctypes callback function",
-                                      callable);
+            PyErr_FormatUnraisable(
+                    "Exception ignored on converting result "
+                    "of ctypes callback function %R",
+                    callable);
         }
         else if (setfunc != _ctypes_get_fielddesc("O")->setfunc) {
             if (keep == Py_None) {
@@ -270,9 +271,10 @@ static void _CallPythonObject(void *mem,
             else if (PyErr_WarnEx(PyExc_RuntimeWarning,
                                   "memory leak in callback function.",
                                   1) == -1) {
-                _PyErr_WriteUnraisableMsg("on converting result "
-                                          "of ctypes callback function",
-                                          callable);
+                PyErr_FormatUnraisable(
+                        "Exception ignored on converting result "
+                        "of ctypes callback function %R",
+                        callable);
             }
         }
     }
@@ -416,25 +418,29 @@ CThunkObject *_ctypes_alloc_callback(PyObject *callable,
         PyErr_Format(PyExc_NotImplementedError, "ffi_prep_closure_loc() is missing");
         goto error;
 #else
-#if defined(__clang__)
-        #pragma clang diagnostic push
-        #pragma clang diagnostic ignored "-Wdeprecated-declarations"
-#endif
-#if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))
-        #pragma GCC diagnostic push
-        #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
+        // GH-85272, GH-23327, GH-100540: On macOS,
+        // HAVE_FFI_PREP_CLOSURE_LOC_RUNTIME is checked at runtime because the
+        // symbol might not be available at runtime when targeting macOS 10.14
+        // or earlier. Even if ffi_prep_closure_loc() is called in practice,
+        // the deprecated ffi_prep_closure() code path is needed if
+        // HAVE_FFI_PREP_CLOSURE_LOC_RUNTIME is false.
+        //
+        // On non-macOS platforms, even if HAVE_FFI_PREP_CLOSURE_LOC_RUNTIME is
+        // defined as 1 and ffi_prep_closure_loc() is used in practice, this
+        // code path is still compiled and emits a compiler warning. The
+        // deprecated code path is likely to be removed by a simple
+        // optimization pass.
+        //
+        // Ignore the compiler warning on the ffi_prep_closure() deprecation,
+        // rather than using complex #if/#else code paths for the different
+        // platforms.
+        _Py_COMP_DIAG_PUSH
+        _Py_COMP_DIAG_IGNORE_DEPR_DECLS
         result = ffi_prep_closure(p->pcl_write, &p->cif, closure_fcn, p);
-
-#if defined(__clang__)
-        #pragma clang diagnostic pop
-#endif
-#if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))
-        #pragma GCC diagnostic pop
-#endif
-
+        _Py_COMP_DIAG_POP
 #endif
     }
+
     if (result != FFI_OK) {
         PyErr_Format(PyExc_RuntimeError,
                      "ffi_prep_closure failed with %d", result);
@@ -479,12 +485,22 @@ long Call_GetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 
     {
         PyObject *py_rclsid = PyLong_FromVoidPtr((void *)rclsid);
+        if (py_rclsid == NULL) {
+            Py_DECREF(func);
+            PyErr_WriteUnraisable(context ? context : Py_None);
+            return E_FAIL;
+        }
         PyObject *py_riid = PyLong_FromVoidPtr((void *)riid);
+        if (py_riid == NULL) {
+            Py_DECREF(func);
+            Py_DECREF(py_rclsid);
+            PyErr_WriteUnraisable(context ? context : Py_None);
+            return E_FAIL;
+        }
         PyObject *py_ppv = PyLong_FromVoidPtr(ppv);
-        if (!py_rclsid || !py_riid || !py_ppv) {
-            Py_XDECREF(py_rclsid);
-            Py_XDECREF(py_riid);
-            Py_XDECREF(py_ppv);
+        if (py_ppv == NULL) {
+            Py_DECREF(py_rclsid);
+            Py_DECREF(py_riid);
             Py_DECREF(func);
             PyErr_WriteUnraisable(context ? context : Py_None);
             return E_FAIL;
diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c
index d2fe525dd4d396..3b11cd7f58ce4b 100644
--- a/Modules/_ctypes/callproc.c
+++ b/Modules/_ctypes/callproc.c
@@ -54,12 +54,17 @@
 
  */
 
+/*[clinic input]
+module _ctypes
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=476a19c49b31a75c]*/
+
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
 
 #include <stdbool.h>
 
@@ -96,8 +101,11 @@
 #define DONT_USE_SEH
 #endif
 
-#include "pycore_runtime.h"         // _PyRuntime
-#include "pycore_global_objects.h"  // _Py_ID()
+#include "pycore_runtime.h"       // _PyRuntime
+#include "pycore_global_objects.h"// _Py_ID()
+#include "pycore_traceback.h"     // _PyTraceback_Add()
+
+#include "clinic/callproc.c.h"
 
 #define CTYPES_CAPSULE_NAME_PYMEM "_ctypes pymem"
 
@@ -160,16 +168,18 @@ _ctypes_get_errobj(int **pspace)
         if (error_object_name == NULL)
             return NULL;
     }
-    errobj = PyDict_GetItemWithError(dict, error_object_name);
+    if (PyDict_GetItemRef(dict, error_object_name, &errobj) < 0) {
+        return NULL;
+    }
     if (errobj) {
         if (!PyCapsule_IsValid(errobj, CTYPES_CAPSULE_NAME_PYMEM)) {
             PyErr_SetString(PyExc_RuntimeError,
                 "ctypes.error_object is an invalid capsule");
+            Py_DECREF(errobj);
             return NULL;
         }
-        Py_INCREF(errobj);
     }
-    else if (!PyErr_Occurred()) {
+    else {
         void *space = PyMem_Calloc(2, sizeof(int));
         if (space == NULL)
             return NULL;
@@ -184,9 +194,6 @@ _ctypes_get_errobj(int **pspace)
             return NULL;
         }
     }
-    else {
-        return NULL;
-    }
     *pspace = (int *)PyCapsule_GetPointer(errobj, CTYPES_CAPSULE_NAME_PYMEM);
     return errobj;
 }
@@ -581,8 +588,8 @@ PyCArg_repr(PyCArgObject *self)
 }
 
 static PyMemberDef PyCArgType_members[] = {
-    { "_obj", T_OBJECT,
-      offsetof(PyCArgObject, obj), READONLY,
+    { "_obj", _Py_T_OBJECT,
+      offsetof(PyCArgObject, obj), Py_READONLY,
       "the wrapped object" },
     { NULL },
 };
@@ -727,7 +734,7 @@ static int ConvParam(PyObject *obj, Py_ssize_t index, struct argument *pa)
 
     {
         PyObject *arg;
-        if (_PyObject_LookupAttr(obj, &_Py_ID(_as_parameter_), &arg) < 0) {
+        if (PyObject_GetOptionalAttr(obj, &_Py_ID(_as_parameter_), &arg) < 0) {
             return -1;
         }
         /* Which types should we exactly allow here?
@@ -1397,7 +1404,7 @@ static PyObject *load_library(PyObject *self, PyObject *args)
 #ifdef _WIN64
     return PyLong_FromVoidPtr(hMod);
 #else
-    return Py_BuildValue("i", hMod);
+    return PyLong_FromLong((int)hMod);
 #endif
 }
 
@@ -1893,20 +1900,32 @@ unpickle(PyObject *self, PyObject *args)
     return NULL;
 }
 
+/*[clinic input]
+_ctypes.POINTER as create_pointer_type
+
+    type as cls: object
+        A ctypes type.
+    /
+
+Create and return a new ctypes pointer type.
+
+Pointer types are cached and reused internally,
+so calling this function repeatedly is cheap.
+[clinic start generated code]*/
+
 static PyObject *
-POINTER(PyObject *self, PyObject *cls)
+create_pointer_type(PyObject *module, PyObject *cls)
+/*[clinic end generated code: output=98c3547ab6f4f40b input=3b81cff5ff9b9d5b]*/
 {
     PyObject *result;
     PyTypeObject *typ;
     PyObject *key;
 
-    result = PyDict_GetItemWithError(_ctypes_ptrtype_cache, cls);
-    if (result) {
-        return Py_NewRef(result);
-    }
-    else if (PyErr_Occurred()) {
-        return NULL;
+    if (PyDict_GetItemRef(_ctypes_ptrtype_cache, cls, &result) != 0) {
+        // found or error
+        return result;
     }
+    // not found
     if (PyUnicode_CheckExact(cls)) {
         PyObject *name = PyUnicode_FromFormat("LP_%U", cls);
         result = PyObject_CallFunction((PyObject *)Py_TYPE(&PyCPointer_Type),
@@ -1944,22 +1963,34 @@ POINTER(PyObject *self, PyObject *cls)
     return result;
 }
 
+/*[clinic input]
+_ctypes.pointer as create_pointer_inst
+
+    obj as arg: object
+    /
+
+Create a new pointer instance, pointing to 'obj'.
+
+The returned object is of the type POINTER(type(obj)). Note that if you
+just want to pass a pointer to an object to a foreign function call, you
+should use byref(obj) which is much faster.
+[clinic start generated code]*/
+
 static PyObject *
-pointer(PyObject *self, PyObject *arg)
+create_pointer_inst(PyObject *module, PyObject *arg)
+/*[clinic end generated code: output=3b543bc9f0de2180 input=713685fdb4d9bc27]*/
 {
     PyObject *result;
     PyObject *typ;
 
-    typ = PyDict_GetItemWithError(_ctypes_ptrtype_cache, (PyObject *)Py_TYPE(arg));
-    if (typ) {
-        return PyObject_CallOneArg(typ, arg);
-    }
-    else if (PyErr_Occurred()) {
+    if (PyDict_GetItemRef(_ctypes_ptrtype_cache, (PyObject *)Py_TYPE(arg), &typ) < 0) {
         return NULL;
     }
-    typ = POINTER(NULL, (PyObject *)Py_TYPE(arg));
-    if (typ == NULL)
-        return NULL;
+    if (typ == NULL) {
+        typ = create_pointer_type(NULL, (PyObject *)Py_TYPE(arg));
+        if (typ == NULL)
+            return NULL;
+    }
     result = PyObject_CallOneArg(typ, arg);
     Py_DECREF(typ);
     return result;
@@ -1997,8 +2028,8 @@ buffer_info(PyObject *self, PyObject *arg)
 PyMethodDef _ctypes_module_methods[] = {
     {"get_errno", get_errno, METH_NOARGS},
     {"set_errno", set_errno, METH_VARARGS},
-    {"POINTER", POINTER, METH_O },
-    {"pointer", pointer, METH_O },
+    CREATE_POINTER_TYPE_METHODDEF
+    CREATE_POINTER_INST_METHODDEF
     {"_unpickle", unpickle, METH_VARARGS },
     {"buffer_info", buffer_info, METH_O, "Return buffer interface information"},
     {"resize", resize, METH_VARARGS, "Resize the memory buffer of a ctypes instance"},
diff --git a/Modules/_ctypes/cfield.c b/Modules/_ctypes/cfield.c
index 128506a9eed920..bfb40e5c5393fc 100644
--- a/Modules/_ctypes/cfield.c
+++ b/Modules/_ctypes/cfield.c
@@ -250,8 +250,8 @@ PyCField_get_size(PyObject *self, void *data)
 }
 
 static PyGetSetDef PyCField_getset[] = {
-    { "offset", PyCField_get_offset, NULL, "offset in bytes of this field" },
-    { "size", PyCField_get_size, NULL, "size in bytes of this field" },
+    { "offset", PyCField_get_offset, NULL, PyDoc_STR("offset in bytes of this field") },
+    { "size", PyCField_get_size, NULL, PyDoc_STR("size in bytes of this field") },
     { NULL, NULL, NULL, NULL },
 };
 
diff --git a/Modules/_ctypes/clinic/callproc.c.h b/Modules/_ctypes/clinic/callproc.c.h
new file mode 100644
index 00000000000000..a787693ae67cd8
--- /dev/null
+++ b/Modules/_ctypes/clinic/callproc.c.h
@@ -0,0 +1,32 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(create_pointer_type__doc__,
+"POINTER($module, type, /)\n"
+"--\n"
+"\n"
+"Create and return a new ctypes pointer type.\n"
+"\n"
+"  type\n"
+"    A ctypes type.\n"
+"\n"
+"Pointer types are cached and reused internally,\n"
+"so calling this function repeatedly is cheap.");
+
+#define CREATE_POINTER_TYPE_METHODDEF    \
+    {"POINTER", (PyCFunction)create_pointer_type, METH_O, create_pointer_type__doc__},
+
+PyDoc_STRVAR(create_pointer_inst__doc__,
+"pointer($module, obj, /)\n"
+"--\n"
+"\n"
+"Create a new pointer instance, pointing to \'obj\'.\n"
+"\n"
+"The returned object is of the type POINTER(type(obj)). Note that if you\n"
+"just want to pass a pointer to an object to a foreign function call, you\n"
+"should use byref(obj) which is much faster.");
+
+#define CREATE_POINTER_INST_METHODDEF    \
+    {"pointer", (PyCFunction)create_pointer_inst, METH_O, create_pointer_inst__doc__},
+/*[clinic end generated code: output=51b311ea369e5adf input=a9049054013a1b77]*/
diff --git a/Modules/_ctypes/malloc_closure.c b/Modules/_ctypes/malloc_closure.c
index 3a859322772ba7..bb4f8f21bd3f77 100644
--- a/Modules/_ctypes/malloc_closure.c
+++ b/Modules/_ctypes/malloc_closure.c
@@ -1,16 +1,17 @@
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
+
 #include <Python.h>
 #include <ffi.h>
 #ifdef MS_WIN32
-#include <windows.h>
+#  include <windows.h>
 #else
-#include <sys/mman.h>
-#include <unistd.h>
-# if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
-#  define MAP_ANONYMOUS MAP_ANON
-# endif
+#  include <sys/mman.h>
+#  include <unistd.h>             // sysconf()
+#  if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
+#    define MAP_ANONYMOUS MAP_ANON
+#  endif
 #endif
 #include "ctypes.h"
 
diff --git a/Modules/_ctypes/stgdict.c b/Modules/_ctypes/stgdict.c
index b1b2bac1455e67..04dd9bae32cd5e 100644
--- a/Modules/_ctypes/stgdict.c
+++ b/Modules/_ctypes/stgdict.c
@@ -9,6 +9,7 @@
 #endif
 
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_dict.h"          // _PyDict_SizeOf()
 #include <ffi.h>
 #ifdef MS_WIN32
 #  include <malloc.h>
@@ -295,7 +296,7 @@ MakeAnonFields(PyObject *type)
     PyObject *anon_names;
     Py_ssize_t i;
 
-    if (_PyObject_LookupAttr(type, &_Py_ID(_anonymous_), &anon) < 0) {
+    if (PyObject_GetOptionalAttr(type, &_Py_ID(_anonymous_), &anon) < 0) {
         return -1;
     }
     if (anon == NULL) {
@@ -385,22 +386,22 @@ PyCStructUnionType_update_stgdict(PyObject *type, PyObject *fields, int isStruct
     if (fields == NULL)
         return 0;
 
-    if (_PyObject_LookupAttr(type, &_Py_ID(_swappedbytes_), &tmp) < 0) {
+    int rc = PyObject_HasAttrWithError(type, &_Py_ID(_swappedbytes_));
+    if (rc < 0) {
         return -1;
     }
-    if (tmp) {
-        Py_DECREF(tmp);
+    if (rc) {
         big_endian = !PY_BIG_ENDIAN;
     }
     else {
         big_endian = PY_BIG_ENDIAN;
     }
 
-    if (_PyObject_LookupAttr(type, &_Py_ID(_pack_), &tmp) < 0) {
+    if (PyObject_GetOptionalAttr(type, &_Py_ID(_pack_), &tmp) < 0) {
         return -1;
     }
     if (tmp) {
-        pack = _PyLong_AsInt(tmp);
+        pack = PyLong_AsInt(tmp);
         Py_DECREF(tmp);
         if (pack < 0) {
             if (!PyErr_Occurred() ||
@@ -696,29 +697,43 @@ PyCStructUnionType_update_stgdict(PyObject *type, PyObject *fields, int isStruct
     stgdict->align = total_align;
     stgdict->length = len;      /* ADD ffi_ofs? */
 
-#define MAX_STRUCT_SIZE 16
+/*
+ * On Arm platforms, structs with at most 4 elements of any floating point
+ * type values can be passed through registers. If the type is double the
+ * maximum size of the struct is 32 bytes.
+ * By Arm platforms it is meant both 32 and 64-bit.
+*/
+#if defined(__aarch64__) || defined(__arm__)
+#  define MAX_STRUCT_SIZE 32
+#else
+#  define MAX_STRUCT_SIZE 16
+#endif
 
     if (arrays_seen && (size <= MAX_STRUCT_SIZE)) {
         /*
-         * See bpo-22273. Arrays are normally treated as pointers, which is
-         * fine when an array name is being passed as parameter, but not when
-         * passing structures by value that contain arrays. On 64-bit Linux,
-         * small structures passed by value are passed in registers, and in
-         * order to do this, libffi needs to know the true type of the array
-         * members of structs. Treating them as pointers breaks things.
+         * See bpo-22273 and gh-110190. Arrays are normally treated as
+         * pointers, which is fine when an array name is being passed as
+         * parameter, but not when passing structures by value that contain
+         * arrays.
+         * On x86_64 Linux and Arm platforms, small structures passed by
+         * value are passed in registers, and in order to do this, libffi needs
+         * to know the true type of the array members of structs. Treating them
+         * as pointers breaks things.
          *
-         * By small structures, we mean ones that are 16 bytes or less. In that
-         * case, there can't be more than 16 elements after unrolling arrays,
-         * as we (will) disallow bitfields. So we can collect the true ffi_type
-         * values in a fixed-size local array on the stack and, if any arrays
-         * were seen, replace the ffi_type_pointer.elements with a more
-         * accurate set, to allow libffi to marshal them into registers
-         * correctly. It means one more loop over the fields, but if we got
-         * here, the structure is small, so there aren't too many of those.
+         * By small structures, we mean ones that are 16 bytes or less on
+         * x86-64 and 32 bytes or less on Arm. In that case, there can't be
+         * more than 16 or 32 elements after unrolling arrays, as we (will)
+         * disallow bitfields. So we can collect the true ffi_type values in
+         * a fixed-size local array on the stack and, if any arrays were seen,
+         * replace the ffi_type_pointer.elements with a more accurate set,
+         * to allow libffi to marshal them into registers correctly.
+         * It means one more loop over the fields, but if we got here,
+         * the structure is small, so there aren't too many of those.
          *
-         * Although the passing in registers is specific to 64-bit Linux, the
-         * array-in-struct vs. pointer problem is general. But we restrict the
-         * type transformation to small structs nonetheless.
+         * Although the passing in registers is specific to x86_64 Linux
+         * and Arm platforms, the array-in-struct vs. pointer problem is
+         * general. But we restrict the type transformation to small structs
+         * nonetheless.
          *
          * Note that although a union may be small in terms of memory usage, it
          * could contain many overlapping declarations of arrays, e.g.
@@ -744,6 +759,9 @@ PyCStructUnionType_update_stgdict(PyObject *type, PyObject *fields, int isStruct
          *     struct { uint_32 e1; uint_32 e2; ... uint_32 e_4; } f6;
          * }
          *
+         * The same principle applies for a struct 32 bytes in size like in
+         * the case of Arm platforms.
+         *
          * So the struct/union needs setting up as follows: all non-array
          * elements copied across as is, and all array elements replaced with
          * an equivalent struct which has as many fields as the array has
diff --git a/Modules/_curses_panel.c b/Modules/_curses_panel.c
index a3124ff80551e0..2ec8f34c5c220b 100644
--- a/Modules/_curses_panel.c
+++ b/Modules/_curses_panel.c
@@ -10,6 +10,11 @@ static const char PyCursesVersion[] = "2.1";
 
 /* Includes */
 
+// clinic/_curses_panel.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 
 #include "py_curses.h"
@@ -662,8 +667,7 @@ _curses_panel_exec(PyObject *mod)
     state->PyCursesError = PyErr_NewException(
         "_curses_panel.error", NULL, NULL);
 
-    if (PyModule_AddObject(mod, "error", Py_NewRef(state->PyCursesError)) < 0) {
-        Py_DECREF(state->PyCursesError);
+    if (PyModule_AddObjectRef(mod, "error", state->PyCursesError) < 0) {
         return -1;
     }
 
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 5691a419a32f8e..d04d1e973af030 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -104,8 +104,6 @@ static const char PyCursesVersion[] = "2.2";
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 #include "pycore_long.h"          // _PyLong_GetZero()
 #include "pycore_structseq.h"     // _PyStructSequence_NewType()
@@ -3071,8 +3069,8 @@ _curses_getwin(PyObject *module, PyObject *file)
     }
     datalen = PyBytes_GET_SIZE(data);
     if (fwrite(PyBytes_AS_STRING(data), 1, datalen, fp) != datalen) {
-        Py_DECREF(data);
         PyErr_SetFromErrno(PyExc_OSError);
+        Py_DECREF(data);
         goto error;
     }
     Py_DECREF(data);
@@ -3675,7 +3673,7 @@ _curses_mousemask_impl(PyObject *module, unsigned long newmask)
 #endif
 
 /*[clinic input]
-_curses.napms
+_curses.napms -> int
 
     ms: int
         Duration in milliseconds.
@@ -3684,13 +3682,13 @@ _curses.napms
 Sleep for specified time.
 [clinic start generated code]*/
 
-static PyObject *
+static int
 _curses_napms_impl(PyObject *module, int ms)
-/*[clinic end generated code: output=a40a1da2e39ea438 input=20cd3af2b6900f56]*/
+/*[clinic end generated code: output=5f292a6a724491bd input=c6d6e01f2f1df9f7]*/
 {
     PyCursesInitialised;
 
-    return Py_BuildValue("i", napms(ms));
+    return napms(ms);
 }
 
 
diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c
index 8b417bdd0fb5b6..cb5403e8461ff0 100644
--- a/Modules/_datetimemodule.c
+++ b/Modules/_datetimemodule.c
@@ -15,7 +15,7 @@
 #include "pycore_long.h"          // _PyLong_GetOne()
 #include "pycore_object.h"        // _PyObject_Init()
 #include "datetime.h"
-#include "structmember.h"         // PyMemberDef
+
 
 #include <time.h>
 
@@ -40,6 +40,27 @@
 
 #define PyTimezone_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeZoneType)
 
+typedef struct {
+    /* Conversion factors. */
+    PyObject *us_per_ms;       // 1_000
+    PyObject *us_per_second;   // 1_000_000
+    PyObject *us_per_minute;   // 1e6 * 60 as Python int
+    PyObject *us_per_hour;     // 1e6 * 3600 as Python int
+    PyObject *us_per_day;      // 1e6 * 3600 * 24 as Python int
+    PyObject *us_per_week;     // 1e6 * 3600 * 24 * 7 as Python int
+    PyObject *seconds_per_day; // 3600 * 24 as Python int
+
+    /* The interned UTC timezone instance */
+    PyObject *utc;
+
+    /* The interned Unix epoch datetime instance */
+    PyObject *epoch;
+} datetime_state;
+
+static datetime_state _datetime_global_state;
+
+#define STATIC_STATE() (&_datetime_global_state)
+
 /*[clinic input]
 module datetime
 class datetime.datetime "PyDateTime_DateTime *" "&PyDateTime_DateTimeType"
@@ -1139,11 +1160,6 @@ typedef struct
     PyObject *name;
 } PyDateTime_TimeZone;
 
-/* The interned UTC timezone instance */
-static PyObject *PyDateTime_TimeZone_UTC;
-/* The interned Epoch datetime instance */
-static PyObject *PyDateTime_Epoch;
-
 /* Create new timezone instance checking offset range.  This
    function does not check the name argument.  Caller must assure
    that offset is a timedelta instance and name is either NULL
@@ -1177,7 +1193,8 @@ new_timezone(PyObject *offset, PyObject *name)
     assert(name == NULL || PyUnicode_Check(name));
 
     if (name == NULL && delta_bool((PyDateTime_Delta *)offset) == 0) {
-        return Py_NewRef(PyDateTime_TimeZone_UTC);
+        datetime_state *st = STATIC_STATE();
+        return Py_NewRef(st->utc);
     }
     if ((GET_TD_DAYS(offset) == -1 &&
             GET_TD_SECONDS(offset) == 0 &&
@@ -1390,7 +1407,8 @@ tzinfo_from_isoformat_results(int rv, int tzoffset, int tz_useconds)
     if (rv == 1) {
         // Create a timezone from offset in seconds (0 returns UTC)
         if (tzoffset == 0) {
-            return Py_NewRef(PyDateTime_TimeZone_UTC);
+            datetime_state *st = STATIC_STATE();
+            return Py_NewRef(st->utc);
         }
 
         PyObject *delta = new_delta(0, tzoffset, tz_useconds, 1);
@@ -1807,19 +1825,6 @@ cmperror(PyObject *a, PyObject *b)
     return NULL;
 }
 
-/* ---------------------------------------------------------------------------
- * Cached Python objects; these are set by the module init function.
- */
-
-/* Conversion factors. */
-static PyObject *us_per_ms = NULL;      /* 1000 */
-static PyObject *us_per_second = NULL;  /* 1000000 */
-static PyObject *us_per_minute = NULL;  /* 1e6 * 60 as Python int */
-static PyObject *us_per_hour = NULL;    /* 1e6 * 3600 as Python int */
-static PyObject *us_per_day = NULL;     /* 1e6 * 3600 * 24 as Python int */
-static PyObject *us_per_week = NULL;    /* 1e6*3600*24*7 as Python int */
-static PyObject *seconds_per_day = NULL; /* 3600*24 as Python int */
-
 /* ---------------------------------------------------------------------------
  * Class implementations.
  */
@@ -1845,7 +1850,8 @@ delta_to_microseconds(PyDateTime_Delta *self)
     x1 = PyLong_FromLong(GET_TD_DAYS(self));
     if (x1 == NULL)
         goto Done;
-    x2 = PyNumber_Multiply(x1, seconds_per_day);        /* days in seconds */
+    datetime_state *st = STATIC_STATE();
+    x2 = PyNumber_Multiply(x1, st->seconds_per_day);        /* days in seconds */
     if (x2 == NULL)
         goto Done;
     Py_SETREF(x1, NULL);
@@ -1862,7 +1868,7 @@ delta_to_microseconds(PyDateTime_Delta *self)
     /* x1 = */ x2 = NULL;
 
     /* x3 has days+seconds in seconds */
-    x1 = PyNumber_Multiply(x3, us_per_second);          /* us */
+    x1 = PyNumber_Multiply(x3, st->us_per_second);          /* us */
     if (x1 == NULL)
         goto Done;
     Py_SETREF(x3, NULL);
@@ -1917,13 +1923,14 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
     PyObject *num = NULL;
     PyObject *result = NULL;
 
-    tuple = checked_divmod(pyus, us_per_second);
+    datetime_state *st = STATIC_STATE();
+    tuple = checked_divmod(pyus, st->us_per_second);
     if (tuple == NULL) {
         goto Done;
     }
 
     num = PyTuple_GET_ITEM(tuple, 1);           /* us */
-    us = _PyLong_AsInt(num);
+    us = PyLong_AsInt(num);
     num = NULL;
     if (us == -1 && PyErr_Occurred()) {
         goto Done;
@@ -1935,13 +1942,13 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
     num = Py_NewRef(PyTuple_GET_ITEM(tuple, 0));        /* leftover seconds */
     Py_DECREF(tuple);
 
-    tuple = checked_divmod(num, seconds_per_day);
+    tuple = checked_divmod(num, st->seconds_per_day);
     if (tuple == NULL)
         goto Done;
     Py_DECREF(num);
 
     num = PyTuple_GET_ITEM(tuple, 1);           /* seconds */
-    s = _PyLong_AsInt(num);
+    s = PyLong_AsInt(num);
     num = NULL;
     if (s == -1 && PyErr_Occurred()) {
         goto Done;
@@ -1951,7 +1958,7 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
     }
 
     num = Py_NewRef(PyTuple_GET_ITEM(tuple, 0));           /* leftover days */
-    d = _PyLong_AsInt(num);
+    d = PyLong_AsInt(num);
     if (d == -1 && PyErr_Occurred()) {
         goto Done;
     }
@@ -2535,28 +2542,29 @@ delta_new(PyTypeObject *type, PyObject *args, PyObject *kw)
         y = accum("microseconds", x, us, _PyLong_GetOne(), &leftover_us);
         CLEANUP;
     }
+    datetime_state *st = STATIC_STATE();
     if (ms) {
-        y = accum("milliseconds", x, ms, us_per_ms, &leftover_us);
+        y = accum("milliseconds", x, ms, st->us_per_ms, &leftover_us);
         CLEANUP;
     }
     if (second) {
-        y = accum("seconds", x, second, us_per_second, &leftover_us);
+        y = accum("seconds", x, second, st->us_per_second, &leftover_us);
         CLEANUP;
     }
     if (minute) {
-        y = accum("minutes", x, minute, us_per_minute, &leftover_us);
+        y = accum("minutes", x, minute, st->us_per_minute, &leftover_us);
         CLEANUP;
     }
     if (hour) {
-        y = accum("hours", x, hour, us_per_hour, &leftover_us);
+        y = accum("hours", x, hour, st->us_per_hour, &leftover_us);
         CLEANUP;
     }
     if (day) {
-        y = accum("days", x, day, us_per_day, &leftover_us);
+        y = accum("days", x, day, st->us_per_day, &leftover_us);
         CLEANUP;
     }
     if (week) {
-        y = accum("weeks", x, week, us_per_week, &leftover_us);
+        y = accum("weeks", x, week, st->us_per_week, &leftover_us);
         CLEANUP;
     }
     if (leftover_us) {
@@ -2711,7 +2719,8 @@ delta_total_seconds(PyObject *self, PyObject *Py_UNUSED(ignored))
     if (total_microseconds == NULL)
         return NULL;
 
-    total_seconds = PyNumber_TrueDivide(total_microseconds, us_per_second);
+    datetime_state *st = STATIC_STATE();
+    total_seconds = PyNumber_TrueDivide(total_microseconds, st->us_per_second);
 
     Py_DECREF(total_microseconds);
     return total_seconds;
@@ -2727,13 +2736,13 @@ delta_reduce(PyDateTime_Delta* self, PyObject *Py_UNUSED(ignored))
 
 static PyMemberDef delta_members[] = {
 
-    {"days",         T_INT, OFFSET(days),         READONLY,
+    {"days",         Py_T_INT, OFFSET(days),         Py_READONLY,
      PyDoc_STR("Number of days.")},
 
-    {"seconds",      T_INT, OFFSET(seconds),      READONLY,
+    {"seconds",      Py_T_INT, OFFSET(seconds),      Py_READONLY,
      PyDoc_STR("Number of seconds (>= 0 and less than 1 day).")},
 
-    {"microseconds", T_INT, OFFSET(microseconds), READONLY,
+    {"microseconds", Py_T_INT, OFFSET(microseconds), Py_READONLY,
      PyDoc_STR("Number of microseconds (>= 0 and less than 1 second).")},
     {NULL}
 };
@@ -2901,9 +2910,6 @@ date_new(PyTypeObject *type, PyObject *args, PyObject *kw)
             }
         }
         else if (PyUnicode_Check(state)) {
-            if (PyUnicode_READY(state)) {
-                return NULL;
-            }
             if (PyUnicode_GET_LENGTH(state) == _PyDateTime_DATE_DATASIZE &&
                 MONTH_IS_SANE(PyUnicode_READ_CHAR(state, 2)))
             {
@@ -3593,6 +3599,8 @@ static PyMethodDef date_methods[] = {
     {"replace",     _PyCFunction_CAST(date_replace),      METH_VARARGS | METH_KEYWORDS,
      PyDoc_STR("Return date with new specified fields.")},
 
+    {"__replace__", _PyCFunction_CAST(date_replace),      METH_VARARGS | METH_KEYWORDS},
+
     {"__reduce__", (PyCFunction)date_reduce,        METH_NOARGS,
      PyDoc_STR("__reduce__() -> (cls, state)")},
 
@@ -3794,7 +3802,7 @@ tzinfo_reduce(PyObject *self, PyObject *Py_UNUSED(ignored))
     PyObject *args, *state;
     PyObject *getinitargs;
 
-    if (_PyObject_LookupAttr(self, &_Py_ID(__getinitargs__), &getinitargs) < 0) {
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(__getinitargs__), &getinitargs) < 0) {
         return NULL;
     }
     if (getinitargs != NULL) {
@@ -3944,8 +3952,10 @@ timezone_repr(PyDateTime_TimeZone *self)
        to use Py_TYPE(self)->tp_name here. */
     const char *type_name = Py_TYPE(self)->tp_name;
 
-    if (((PyObject *)self) == PyDateTime_TimeZone_UTC)
+    datetime_state *st = STATIC_STATE();
+    if (((PyObject *)self) == st->utc) {
         return PyUnicode_FromFormat("%s.utc", type_name);
+    }
 
     if (self->name == NULL)
         return PyUnicode_FromFormat("%s(%R)", type_name, self->offset);
@@ -3965,11 +3975,14 @@ timezone_str(PyDateTime_TimeZone *self)
     if (self->name != NULL) {
         return Py_NewRef(self->name);
     }
-    if ((PyObject *)self == PyDateTime_TimeZone_UTC ||
+    datetime_state *st = STATIC_STATE();
+    if ((PyObject *)self == st->utc ||
            (GET_TD_DAYS(self->offset) == 0 &&
             GET_TD_SECONDS(self->offset) == 0 &&
             GET_TD_MICROSECONDS(self->offset) == 0))
+    {
         return PyUnicode_FromString("UTC");
+    }
     /* Offset is normalized, so it is negative if days < 0 */
     if (GET_TD_DAYS(self->offset) < 0) {
         sign = '-';
@@ -4047,8 +4060,8 @@ static PyObject *
 timezone_getinitargs(PyDateTime_TimeZone *self, PyObject *Py_UNUSED(ignored))
 {
     if (self->name == NULL)
-        return Py_BuildValue("(O)", self->offset);
-    return Py_BuildValue("(OO)", self->offset, self->name);
+        return PyTuple_Pack(1, self->offset);
+    return PyTuple_Pack(2, self->offset, self->name);
 }
 
 static PyMethodDef timezone_methods[] = {
@@ -4234,9 +4247,6 @@ time_new(PyTypeObject *type, PyObject *args, PyObject *kw)
             }
         }
         else if (PyUnicode_Check(state)) {
-            if (PyUnicode_READY(state)) {
-                return NULL;
-            }
             if (PyUnicode_GET_LENGTH(state) == _PyDateTime_TIME_DATASIZE &&
                 (0x7F & PyUnicode_READ_CHAR(state, 0)) < 24)
             {
@@ -4620,7 +4630,7 @@ time_fromisoformat(PyObject *cls, PyObject *tstr) {
     }
 
     int hour = 0, minute = 0, second = 0, microsecond = 0;
-    int tzoffset, tzimicrosecond = 0;
+    int tzoffset = 0, tzimicrosecond = 0;
     int rv = parse_isoformat_time(p, len,
                                   &hour, &minute, &second, &microsecond,
                                   &tzoffset, &tzimicrosecond);
@@ -4725,6 +4735,8 @@ static PyMethodDef time_methods[] = {
     {"replace",     _PyCFunction_CAST(time_replace),          METH_VARARGS | METH_KEYWORDS,
      PyDoc_STR("Return time with new specified fields.")},
 
+    {"__replace__", _PyCFunction_CAST(time_replace),          METH_VARARGS | METH_KEYWORDS},
+
      {"fromisoformat", (PyCFunction)time_fromisoformat, METH_O | METH_CLASS,
      PyDoc_STR("string -> time from a string in ISO 8601 format")},
 
@@ -4909,9 +4921,6 @@ datetime_new(PyTypeObject *type, PyObject *args, PyObject *kw)
             }
         }
         else if (PyUnicode_Check(state)) {
-            if (PyUnicode_READY(state)) {
-                return NULL;
-            }
             if (PyUnicode_GET_LENGTH(state) == _PyDateTime_DATETIME_DATASIZE &&
                 MONTH_IS_SANE(PyUnicode_READ_CHAR(state, 2) & 0x7F))
             {
@@ -5145,9 +5154,9 @@ static PyObject *
 datetime_utcnow(PyObject *cls, PyObject *dummy)
 {
     if (PyErr_WarnEx(PyExc_DeprecationWarning,
-        "datetime.utcnow() is deprecated and scheduled for removal in a "
+        "datetime.datetime.utcnow() is deprecated and scheduled for removal in a "
         "future version. Use timezone-aware objects to represent datetimes "
-        "in UTC: datetime.now(datetime.UTC).", 1))
+        "in UTC: datetime.datetime.now(datetime.UTC).", 1))
     {
         return NULL;
     }
@@ -5188,9 +5197,9 @@ static PyObject *
 datetime_utcfromtimestamp(PyObject *cls, PyObject *args)
 {
     if (PyErr_WarnEx(PyExc_DeprecationWarning,
-        "datetime.utcfromtimestamp() is deprecated and scheduled for removal "
+        "datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal "
         "in a future version. Use timezone-aware objects to represent "
-        "datetimes in UTC: datetime.now(datetime.UTC).", 1))
+        "datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).", 1))
     {
         return NULL;
     }
@@ -6139,7 +6148,8 @@ local_timezone(PyDateTime_DateTime *utc_time)
     PyObject *one_second;
     PyObject *seconds;
 
-    delta = datetime_subtract((PyObject *)utc_time, PyDateTime_Epoch);
+    datetime_state *st = STATIC_STATE();
+    delta = datetime_subtract((PyObject *)utc_time, st->epoch);
     if (delta == NULL)
         return NULL;
     one_second = new_delta(0, 1, 0, 0);
@@ -6251,6 +6261,7 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
     if (result == NULL)
         return NULL;
 
+    datetime_state *st = STATIC_STATE();
     /* Make sure result is aware and UTC. */
     if (!HASTZINFO(result)) {
         temp = (PyObject *)result;
@@ -6262,7 +6273,7 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
                                     DATE_GET_MINUTE(result),
                                     DATE_GET_SECOND(result),
                                     DATE_GET_MICROSECOND(result),
-                                    PyDateTime_TimeZone_UTC,
+                                    st->utc,
                                     DATE_GET_FOLD(result),
                                     Py_TYPE(result));
         Py_DECREF(temp);
@@ -6271,7 +6282,7 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
     }
     else {
         /* Result is already aware - just replace tzinfo. */
-        Py_SETREF(result->tzinfo, Py_NewRef(PyDateTime_TimeZone_UTC));
+        Py_SETREF(result->tzinfo, Py_NewRef(st->utc));
     }
 
     /* Attach new tzinfo and let fromutc() do the rest. */
@@ -6375,8 +6386,9 @@ datetime_timestamp(PyDateTime_DateTime *self, PyObject *Py_UNUSED(ignored))
     PyObject *result;
 
     if (HASTZINFO(self) && self->tzinfo != Py_None) {
+        datetime_state *st = STATIC_STATE();
         PyObject *delta;
-        delta = datetime_subtract((PyObject *)self, PyDateTime_Epoch);
+        delta = datetime_subtract((PyObject *)self, st->epoch);
         if (delta == NULL)
             return NULL;
         result = delta_total_seconds(delta, NULL);
@@ -6588,6 +6600,8 @@ static PyMethodDef datetime_methods[] = {
     {"replace",     _PyCFunction_CAST(datetime_replace),      METH_VARARGS | METH_KEYWORDS,
      PyDoc_STR("Return datetime with new specified fields.")},
 
+    {"__replace__", _PyCFunction_CAST(datetime_replace),      METH_VARARGS | METH_KEYWORDS},
+
     {"astimezone",  _PyCFunction_CAST(datetime_astimezone), METH_VARARGS | METH_KEYWORDS,
      PyDoc_STR("tz -> convert to local time in new timezone tz\n")},
 
@@ -6695,10 +6709,11 @@ get_datetime_capi(void)
     capi->Date_FromTimestamp = datetime_date_fromtimestamp_capi;
     capi->DateTime_FromDateAndTimeAndFold = new_datetime_ex2;
     capi->Time_FromTimeAndFold = new_time_ex2;
-    // Make sure this function is called after PyDateTime_TimeZone_UTC has
+    // Make sure this function is called after utc has
     // been initialized.
-    assert(PyDateTime_TimeZone_UTC != NULL);
-    capi->TimeZone_UTC = PyDateTime_TimeZone_UTC; // borrowed ref
+    datetime_state *st = STATIC_STATE();
+    assert(st->utc != NULL);
+    capi->TimeZone_UTC = st->utc; // borrowed ref
     return capi;
 }
 
@@ -6709,6 +6724,85 @@ datetime_destructor(PyObject *op)
     PyMem_Free(ptr);
 }
 
+static int
+datetime_clear(PyObject *module)
+{
+    datetime_state *st = STATIC_STATE();
+
+    Py_CLEAR(st->us_per_ms);
+    Py_CLEAR(st->us_per_second);
+    Py_CLEAR(st->us_per_minute);
+    Py_CLEAR(st->us_per_hour);
+    Py_CLEAR(st->us_per_day);
+    Py_CLEAR(st->us_per_week);
+    Py_CLEAR(st->seconds_per_day);
+    Py_CLEAR(st->utc);
+    Py_CLEAR(st->epoch);
+    return 0;
+}
+
+static PyObject *
+create_timezone_from_delta(int days, int sec, int ms, int normalize)
+{
+    PyObject *delta = new_delta(days, sec, ms, normalize);
+    if (delta == NULL) {
+        return NULL;
+    }
+    PyObject *tz = create_timezone(delta, NULL);
+    Py_DECREF(delta);
+    return tz;
+}
+
+static int
+init_state(datetime_state *st)
+{
+    st->us_per_ms = PyLong_FromLong(1000);
+    if (st->us_per_ms == NULL) {
+        return -1;
+    }
+    st->us_per_second = PyLong_FromLong(1000000);
+    if (st->us_per_second == NULL) {
+        return -1;
+    }
+    st->us_per_minute = PyLong_FromLong(60000000);
+    if (st->us_per_minute == NULL) {
+        return -1;
+    }
+    st->seconds_per_day = PyLong_FromLong(24 * 3600);
+    if (st->seconds_per_day == NULL) {
+        return -1;
+    }
+
+    /* The rest are too big for 32-bit ints, but even
+     * us_per_week fits in 40 bits, so doubles should be exact.
+     */
+    st->us_per_hour = PyLong_FromDouble(3600000000.0);
+    if (st->us_per_hour == NULL) {
+        return -1;
+    }
+    st->us_per_day = PyLong_FromDouble(86400000000.0);
+    if (st->us_per_day == NULL) {
+        return -1;
+    }
+    st->us_per_week = PyLong_FromDouble(604800000000.0);
+    if (st->us_per_week == NULL) {
+        return -1;
+    }
+
+    /* Init UTC timezone */
+    st->utc = create_timezone_from_delta(0, 0, 0, 0);
+    if (st->utc == NULL) {
+        return -1;
+    }
+
+    /* Init Unix epoch */
+    st->epoch = new_datetime(1970, 1, 1, 0, 0, 0, 0, st->utc, 0);
+    if (st->epoch == NULL) {
+        return -1;
+    }
+    return 0;
+}
+
 static int
 _datetime_exec(PyObject *module)
 {
@@ -6730,23 +6824,23 @@ _datetime_exec(PyObject *module)
 
     for (size_t i = 0; i < Py_ARRAY_LENGTH(types); i++) {
         if (PyModule_AddType(module, types[i]) < 0) {
-            return -1;
+            goto error;
         }
     }
 
     if (PyType_Ready(&PyDateTime_IsoCalendarDateType) < 0) {
-        return -1;
+        goto error;
     }
 
 #define DATETIME_ADD_MACRO(dict, c, value_expr)         \
     do {                                                \
         PyObject *value = (value_expr);                 \
         if (value == NULL) {                            \
-            return -1;                                  \
+            goto error;                                 \
         }                                               \
         if (PyDict_SetItemString(dict, c, value) < 0) { \
             Py_DECREF(value);                           \
-            return -1;                                  \
+            goto error;                                 \
         }                                               \
         Py_DECREF(value);                               \
     } while(0)
@@ -6778,78 +6872,54 @@ _datetime_exec(PyObject *module)
                                               999999, Py_None, 0));
     DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
 
-    /* timezone values */
-    d = PyDateTime_TimeZoneType.tp_dict;
-    PyObject *delta = new_delta(0, 0, 0, 0);
-    if (delta == NULL) {
-        return -1;
+    datetime_state *st = STATIC_STATE();
+    if (init_state(st) < 0) {
+        goto error;
     }
 
-    PyObject *x = create_timezone(delta, NULL);
-    Py_DECREF(delta);
-    if (x == NULL) {
-        return -1;
-    }
-    if (PyDict_SetItemString(d, "utc", x) < 0) {
-        Py_DECREF(x);
-        return -1;
+    /* timezone values */
+    d = PyDateTime_TimeZoneType.tp_dict;
+    if (PyDict_SetItemString(d, "utc", st->utc) < 0) {
+        goto error;
     }
 
-    PyDateTime_TimeZone_UTC = x;
-
     /* bpo-37642: These attributes are rounded to the nearest minute for backwards
      * compatibility, even though the constructor will accept a wider range of
      * values. This may change in the future.*/
-    delta = new_delta(-1, 60, 0, 1); /* -23:59 */
-    if (delta == NULL) {
-        return -1;
-    }
 
-    x = create_timezone(delta, NULL);
-    Py_DECREF(delta);
-    DATETIME_ADD_MACRO(d, "min", x);
-
-    delta = new_delta(0, (23 * 60 + 59) * 60, 0, 0); /* +23:59 */
-    if (delta == NULL) {
-        return -1;
-    }
-
-    x = create_timezone(delta, NULL);
-    Py_DECREF(delta);
-    DATETIME_ADD_MACRO(d, "max", x);
+    /* -23:59 */
+    PyObject *min = create_timezone_from_delta(-1, 60, 0, 1);
+    DATETIME_ADD_MACRO(d, "min", min);
 
-    /* Epoch */
-    PyDateTime_Epoch = new_datetime(1970, 1, 1, 0, 0, 0, 0,
-                                    PyDateTime_TimeZone_UTC, 0);
-    if (PyDateTime_Epoch == NULL) {
-        return -1;
-    }
+    /* +23:59 */
+    PyObject *max = create_timezone_from_delta(0, (23 * 60 + 59) * 60, 0, 0);
+    DATETIME_ADD_MACRO(d, "max", max);
 
-    /* module initialization */
+    /* Add module level attributes */
     if (PyModule_AddIntMacro(module, MINYEAR) < 0) {
-        return -1;
+        goto error;
     }
     if (PyModule_AddIntMacro(module, MAXYEAR) < 0) {
-        return -1;
+        goto error;
+    }
+    if (PyModule_AddObjectRef(module, "UTC", st->utc) < 0) {
+        goto error;
     }
 
+    /* At last, set up and add the encapsulated C API */
     PyDateTime_CAPI *capi = get_datetime_capi();
     if (capi == NULL) {
-        return -1;
+        goto error;
     }
-    x = PyCapsule_New(capi, PyDateTime_CAPSULE_NAME, datetime_destructor);
-    if (x == NULL) {
+    PyObject *capsule = PyCapsule_New(capi, PyDateTime_CAPSULE_NAME,
+                                      datetime_destructor);
+    if (capsule == NULL) {
         PyMem_Free(capi);
-        return -1;
-    }
-
-    if (PyModule_AddObject(module, "datetime_CAPI", x) < 0) {
-        Py_DECREF(x);
-        return -1;
+        goto error;
     }
-
-    if (PyModule_AddObjectRef(module, "UTC", PyDateTime_TimeZone_UTC) < 0) {
-        return -1;
+    if (PyModule_Add(module, "datetime_CAPI", capsule) < 0) {
+        PyMem_Free(capi);
+        goto error;
     }
 
     /* A 4-year cycle has an extra leap day over what we'd get from
@@ -6870,29 +6940,16 @@ _datetime_exec(PyObject *module)
     static_assert(DI100Y == 25 * DI4Y - 1, "DI100Y");
     assert(DI100Y == days_before_year(100+1));
 
-    us_per_ms = PyLong_FromLong(1000);
-    us_per_second = PyLong_FromLong(1000000);
-    us_per_minute = PyLong_FromLong(60000000);
-    seconds_per_day = PyLong_FromLong(24 * 3600);
-    if (us_per_ms == NULL || us_per_second == NULL ||
-        us_per_minute == NULL || seconds_per_day == NULL) {
-        return -1;
-    }
-
-    /* The rest are too big for 32-bit ints, but even
-     * us_per_week fits in 40 bits, so doubles should be exact.
-     */
-    us_per_hour = PyLong_FromDouble(3600000000.0);
-    us_per_day = PyLong_FromDouble(86400000000.0);
-    us_per_week = PyLong_FromDouble(604800000000.0);
-    if (us_per_hour == NULL || us_per_day == NULL || us_per_week == NULL) {
-        return -1;
-    }
     return 0;
+
+error:
+    datetime_clear(module);
+    return -1;
 }
+#undef DATETIME_ADD_MACRO
 
 static struct PyModuleDef datetimemodule = {
-    PyModuleDef_HEAD_INIT,
+    .m_base = PyModuleDef_HEAD_INIT,
     .m_name = "_datetime",
     .m_doc = "Fast implementation of the datetime type.",
     .m_size = -1,
diff --git a/Modules/_dbmmodule.c b/Modules/_dbmmodule.c
index 9908174c94c450..ee33fe625be3d7 100644
--- a/Modules/_dbmmodule.c
+++ b/Modules/_dbmmodule.c
@@ -2,7 +2,11 @@
 /* DBM module using dictionary interface */
 
 
-#define PY_SSIZE_T_CLEAN
+// clinic/_dbmmodule.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 
 #include <sys/types.h>
@@ -415,6 +419,38 @@ _dbm_dbm_setdefault_impl(dbmobject *self, PyTypeObject *cls, const char *key,
     return default_value;
 }
 
+/*[clinic input]
+_dbm.dbm.clear
+    cls: defining_class
+    /
+Remove all items from the database.
+
+[clinic start generated code]*/
+
+static PyObject *
+_dbm_dbm_clear_impl(dbmobject *self, PyTypeObject *cls)
+/*[clinic end generated code: output=8d126b9e1d01a434 input=43aa6ca1acb7f5f5]*/
+{
+    _dbm_state *state = PyType_GetModuleState(cls);
+    assert(state != NULL);
+    check_dbmobject_open(self, state->dbm_error);
+    datum key;
+    // Invalidate cache
+    self->di_size = -1;
+    while (1) {
+        key = dbm_firstkey(self->di_dbm);
+        if (key.dptr == NULL) {
+            break;
+        }
+        if (dbm_delete(self->di_dbm, key) < 0) {
+            dbm_clearerr(self->di_dbm);
+            PyErr_SetString(state->dbm_error, "cannot delete item from database");
+            return NULL;
+        }
+    }
+    Py_RETURN_NONE;
+}
+
 static PyObject *
 dbm__enter__(PyObject *self, PyObject *args)
 {
@@ -432,6 +468,7 @@ static PyMethodDef dbm_methods[] = {
     _DBM_DBM_KEYS_METHODDEF
     _DBM_DBM_GET_METHODDEF
     _DBM_DBM_SETDEFAULT_METHODDEF
+    _DBM_DBM_CLEAR_METHODDEF
     {"__enter__", dbm__enter__, METH_NOARGS, NULL},
     {"__exit__",  dbm__exit__, METH_VARARGS, NULL},
     {NULL,  NULL}           /* sentinel */
@@ -520,11 +557,6 @@ dbmopen_impl(PyObject *module, PyObject *filename, const char *flags,
     }
 
     const char *name = PyBytes_AS_STRING(filenamebytes);
-    if (strlen(name) != (size_t)PyBytes_GET_SIZE(filenamebytes)) {
-        Py_DECREF(filenamebytes);
-        PyErr_SetString(PyExc_ValueError, "embedded null character");
-        return NULL;
-    }
     PyObject *self = newdbmobject(state, name, iflags, mode);
     Py_DECREF(filenamebytes);
     return self;
diff --git a/Modules/_decimal/_decimal.c b/Modules/_decimal/_decimal.c
index 0e11c879732ab6..8b93f8e2cbcf0b 100644
--- a/Modules/_decimal/_decimal.c
+++ b/Modules/_decimal/_decimal.c
@@ -35,10 +35,97 @@
 #include "complexobject.h"
 #include "mpdecimal.h"
 
+#include <ctype.h>                // isascii()
 #include <stdlib.h>
 
 #include "docstrings.h"
 
+#ifdef EXTRA_FUNCTIONALITY
+  #define _PY_DEC_ROUND_GUARD MPD_ROUND_GUARD
+#else
+  #define _PY_DEC_ROUND_GUARD (MPD_ROUND_GUARD-1)
+#endif
+
+struct PyDecContextObject;
+struct DecCondMap;
+
+typedef struct {
+    PyTypeObject *PyDecContextManager_Type;
+    PyTypeObject *PyDecContext_Type;
+    PyTypeObject *PyDecSignalDictMixin_Type;
+    PyTypeObject *PyDec_Type;
+    PyTypeObject *PyDecSignalDict_Type;
+    PyTypeObject *DecimalTuple;
+
+    /* Top level Exception; inherits from ArithmeticError */
+    PyObject *DecimalException;
+
+#ifndef WITH_DECIMAL_CONTEXTVAR
+    /* Key for thread state dictionary */
+    PyObject *tls_context_key;
+    /* Invariant: NULL or the most recently accessed thread local context */
+    struct PyDecContextObject *cached_context;
+#else
+    PyObject *current_context_var;
+#endif
+
+    /* Template for creating new thread contexts, calling Context() without
+     * arguments and initializing the module_context on first access. */
+    PyObject *default_context_template;
+
+    /* Basic and extended context templates */
+    PyObject *basic_context_template;
+    PyObject *extended_context_template;
+
+    PyObject *round_map[_PY_DEC_ROUND_GUARD];
+
+    /* Convert rationals for comparison */
+    PyObject *Rational;
+
+    PyObject *SignalTuple;
+
+    struct DecCondMap *signal_map;
+    struct DecCondMap *cond_map;
+
+    /* External C-API functions */
+    binaryfunc _py_long_multiply;
+    binaryfunc _py_long_floor_divide;
+    ternaryfunc _py_long_power;
+    unaryfunc _py_float_abs;
+    PyCFunction _py_long_bit_length;
+    PyCFunction _py_float_as_integer_ratio;
+} decimal_state;
+
+static inline decimal_state *
+get_module_state(PyObject *mod)
+{
+    decimal_state *state = _PyModule_GetState(mod);
+    assert(state != NULL);
+    return state;
+}
+
+static struct PyModuleDef _decimal_module;
+
+static inline decimal_state *
+get_module_state_by_def(PyTypeObject *tp)
+{
+    PyObject *mod = PyType_GetModuleByDef(tp, &_decimal_module);
+    assert(mod != NULL);
+    return get_module_state(mod);
+}
+
+static inline decimal_state *
+find_state_left_or_right(PyObject *left, PyObject *right)
+{
+    PyObject *mod = PyType_GetModuleByDef(Py_TYPE(left), &_decimal_module);
+    if (mod == NULL) {
+        PyErr_Clear();
+        mod = PyType_GetModuleByDef(Py_TYPE(right), &_decimal_module);
+    }
+    assert(mod != NULL);
+    return get_module_state(mod);
+}
+
 
 #if !defined(MPD_VERSION_HEX) || MPD_VERSION_HEX < 0x02050000
   #error "libmpdec version >= 2.5.0 required"
@@ -81,7 +168,7 @@ typedef struct {
     uint32_t *flags;
 } PyDecSignalDictObject;
 
-typedef struct {
+typedef struct PyDecContextObject {
     PyObject_HEAD
     mpd_context_t ctx;
     PyObject *traps;
@@ -96,17 +183,12 @@ typedef struct {
     PyObject *global;
 } PyDecContextManagerObject;
 
-
 #undef MPD
 #undef CTX
-static PyTypeObject PyDec_Type;
-static PyTypeObject *PyDecSignalDict_Type;
-static PyTypeObject PyDecContext_Type;
-static PyTypeObject PyDecContextManager_Type;
-#define PyDec_CheckExact(v) Py_IS_TYPE(v, &PyDec_Type)
-#define PyDec_Check(v) PyObject_TypeCheck(v, &PyDec_Type)
-#define PyDecSignalDict_Check(v) Py_IS_TYPE(v, PyDecSignalDict_Type)
-#define PyDecContext_Check(v) PyObject_TypeCheck(v, &PyDecContext_Type)
+#define PyDec_CheckExact(st, v) Py_IS_TYPE(v, (st)->PyDec_Type)
+#define PyDec_Check(st, v) PyObject_TypeCheck(v, (st)->PyDec_Type)
+#define PyDecSignalDict_Check(st, v) Py_IS_TYPE(v, (st)->PyDecSignalDict_Type)
+#define PyDecContext_Check(st, v) PyObject_TypeCheck(v, (st)->PyDecContext_Type)
 #define MPD(v) (&((PyDecObject *)v)->dec)
 #define SdFlagAddr(v) (((PyDecSignalDictObject *)v)->flags)
 #define SdFlags(v) (*((PyDecSignalDictObject *)v)->flags)
@@ -126,45 +208,24 @@ incr_false(void)
     return Py_NewRef(Py_False);
 }
 
-
-#ifndef WITH_DECIMAL_CONTEXTVAR
-/* Key for thread state dictionary */
-static PyObject *tls_context_key = NULL;
-/* Invariant: NULL or the most recently accessed thread local context */
-static PyDecContextObject *cached_context = NULL;
-#else
-static PyObject *current_context_var = NULL;
-#endif
-
-/* Template for creating new thread contexts, calling Context() without
- * arguments and initializing the module_context on first access. */
-static PyObject *default_context_template = NULL;
-/* Basic and extended context templates */
-static PyObject *basic_context_template = NULL;
-static PyObject *extended_context_template = NULL;
-
-
 /* Error codes for functions that return signals or conditions */
 #define DEC_INVALID_SIGNALS (MPD_Max_status+1U)
 #define DEC_ERR_OCCURRED (DEC_INVALID_SIGNALS<<1)
 #define DEC_ERRORS (DEC_INVALID_SIGNALS|DEC_ERR_OCCURRED)
 
-typedef struct {
+typedef struct DecCondMap {
     const char *name;   /* condition or signal name */
     const char *fqname; /* fully qualified name */
     uint32_t flag;      /* libmpdec flag */
     PyObject *ex;       /* corresponding exception */
 } DecCondMap;
 
-/* Top level Exception; inherits from ArithmeticError */
-static PyObject *DecimalException = NULL;
-
 /* Exceptions that correspond to IEEE signals */
 #define SUBNORMAL 5
 #define INEXACT 6
 #define ROUNDED 7
 #define SIGNAL_MAP_LEN 9
-static DecCondMap signal_map[] = {
+static DecCondMap signal_map_template[] = {
   {"InvalidOperation", "decimal.InvalidOperation", MPD_IEEE_Invalid_operation, NULL},
   {"FloatOperation", "decimal.FloatOperation", MPD_Float_operation, NULL},
   {"DivisionByZero", "decimal.DivisionByZero", MPD_Division_by_zero, NULL},
@@ -178,7 +239,7 @@ static DecCondMap signal_map[] = {
 };
 
 /* Exceptions that inherit from InvalidOperation */
-static DecCondMap cond_map[] = {
+static DecCondMap cond_map_template[] = {
   {"InvalidOperation", "decimal.InvalidOperation", MPD_Invalid_operation, NULL},
   {"ConversionSyntax", "decimal.ConversionSyntax", MPD_Conversion_syntax, NULL},
   {"DivisionImpossible", "decimal.DivisionImpossible", MPD_Division_impossible, NULL},
@@ -190,6 +251,21 @@ static DecCondMap cond_map[] = {
   {NULL}
 };
 
+/* Return a duplicate of DecCondMap template */
+static inline DecCondMap *
+dec_cond_map_init(DecCondMap *template, Py_ssize_t size)
+{
+    DecCondMap *cm;
+    cm = PyMem_Malloc(size);
+    if (cm == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+
+    memcpy(cm, template, size);
+    return cm;
+}
+
 static const char *dec_signal_string[MPD_NUM_FLAGS] = {
     "Clamped",
     "InvalidOperation",
@@ -208,13 +284,6 @@ static const char *dec_signal_string[MPD_NUM_FLAGS] = {
     "Underflow",
 };
 
-#ifdef EXTRA_FUNCTIONALITY
-  #define _PY_DEC_ROUND_GUARD MPD_ROUND_GUARD
-#else
-  #define _PY_DEC_ROUND_GUARD (MPD_ROUND_GUARD-1)
-#endif
-static PyObject *round_map[_PY_DEC_ROUND_GUARD];
-
 static const char *invalid_rounding_err =
 "valid values for rounding are:\n\
   [ROUND_CEILING, ROUND_FLOOR, ROUND_UP, ROUND_DOWN,\n\
@@ -246,14 +315,12 @@ value_error_int(const char *mesg)
     return -1;
 }
 
-#ifdef CONFIG_32
 static PyObject *
 value_error_ptr(const char *mesg)
 {
     PyErr_SetString(PyExc_ValueError, mesg);
     return NULL;
 }
-#endif
 
 static int
 type_error_int(const char *mesg)
@@ -287,11 +354,11 @@ dec_traphandler(mpd_context_t *ctx UNUSED) /* GCOV_NOT_REACHED */
 }
 
 static PyObject *
-flags_as_exception(uint32_t flags)
+flags_as_exception(decimal_state *state, uint32_t flags)
 {
     DecCondMap *cm;
 
-    for (cm = signal_map; cm->name != NULL; cm++) {
+    for (cm = state->signal_map; cm->name != NULL; cm++) {
         if (flags&cm->flag) {
             return cm->ex;
         }
@@ -301,11 +368,11 @@ flags_as_exception(uint32_t flags)
 }
 
 Py_LOCAL_INLINE(uint32_t)
-exception_as_flag(PyObject *ex)
+exception_as_flag(decimal_state *state, PyObject *ex)
 {
     DecCondMap *cm;
 
-    for (cm = signal_map; cm->name != NULL; cm++) {
+    for (cm = state->signal_map; cm->name != NULL; cm++) {
         if (cm->ex == ex) {
             return cm->flag;
         }
@@ -316,7 +383,7 @@ exception_as_flag(PyObject *ex)
 }
 
 static PyObject *
-flags_as_list(uint32_t flags)
+flags_as_list(decimal_state *state, uint32_t flags)
 {
     PyObject *list;
     DecCondMap *cm;
@@ -326,14 +393,14 @@ flags_as_list(uint32_t flags)
         return NULL;
     }
 
-    for (cm = cond_map; cm->name != NULL; cm++) {
+    for (cm = state->cond_map; cm->name != NULL; cm++) {
         if (flags&cm->flag) {
             if (PyList_Append(list, cm->ex) < 0) {
                 goto error;
             }
         }
     }
-    for (cm = signal_map+1; cm->name != NULL; cm++) {
+    for (cm = state->signal_map+1; cm->name != NULL; cm++) {
         if (flags&cm->flag) {
             if (PyList_Append(list, cm->ex) < 0) {
                 goto error;
@@ -349,7 +416,7 @@ flags_as_list(uint32_t flags)
 }
 
 static PyObject *
-signals_as_list(uint32_t flags)
+signals_as_list(decimal_state *state, uint32_t flags)
 {
     PyObject *list;
     DecCondMap *cm;
@@ -359,7 +426,7 @@ signals_as_list(uint32_t flags)
         return NULL;
     }
 
-    for (cm = signal_map; cm->name != NULL; cm++) {
+    for (cm = state->signal_map; cm->name != NULL; cm++) {
         if (flags&cm->flag) {
             if (PyList_Append(list, cm->ex) < 0) {
                 Py_DECREF(list);
@@ -372,7 +439,7 @@ signals_as_list(uint32_t flags)
 }
 
 static uint32_t
-list_as_flags(PyObject *list)
+list_as_flags(decimal_state *state, PyObject *list)
 {
     PyObject *item;
     uint32_t flags, x;
@@ -384,7 +451,7 @@ list_as_flags(PyObject *list)
     flags = 0;
     for (j = 0; j < n; j++) {
         item = PyList_GetItem(list, j);
-        x = exception_as_flag(item);
+        x = exception_as_flag(state, item);
         if (x & DEC_ERRORS) {
             return x;
         }
@@ -395,7 +462,7 @@ list_as_flags(PyObject *list)
 }
 
 static PyObject *
-flags_as_dict(uint32_t flags)
+flags_as_dict(decimal_state *state, uint32_t flags)
 {
     DecCondMap *cm;
     PyObject *dict;
@@ -405,7 +472,7 @@ flags_as_dict(uint32_t flags)
         return NULL;
     }
 
-    for (cm = signal_map; cm->name != NULL; cm++) {
+    for (cm = state->signal_map; cm->name != NULL; cm++) {
         PyObject *b = flags&cm->flag ? Py_True : Py_False;
         if (PyDict_SetItem(dict, cm->ex, b) < 0) {
             Py_DECREF(dict);
@@ -417,7 +484,7 @@ flags_as_dict(uint32_t flags)
 }
 
 static uint32_t
-dict_as_flags(PyObject *val)
+dict_as_flags(decimal_state *state, PyObject *val)
 {
     PyObject *b;
     DecCondMap *cm;
@@ -436,7 +503,7 @@ dict_as_flags(PyObject *val)
         return DEC_INVALID_SIGNALS;
     }
 
-    for (cm = signal_map; cm->name != NULL; cm++) {
+    for (cm = state->signal_map; cm->name != NULL; cm++) {
         b = PyDict_GetItemWithError(val, cm->ex);
         if (b == NULL) {
             if (PyErr_Occurred()) {
@@ -482,6 +549,7 @@ static int
 dec_addstatus(PyObject *context, uint32_t status)
 {
     mpd_context_t *ctx = CTX(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
 
     ctx->status |= status;
     if (status & (ctx->traps|MPD_Malloc_error)) {
@@ -492,11 +560,11 @@ dec_addstatus(PyObject *context, uint32_t status)
             return 1;
         }
 
-        ex = flags_as_exception(ctx->traps&status);
+        ex = flags_as_exception(state, ctx->traps&status);
         if (ex == NULL) {
             return 1; /* GCOV_NOT_REACHED */
         }
-        siglist = flags_as_list(ctx->traps&status);
+        siglist = flags_as_list(state, ctx->traps&status);
         if (siglist == NULL) {
             return 1;
         }
@@ -509,18 +577,17 @@ dec_addstatus(PyObject *context, uint32_t status)
 }
 
 static int
-getround(PyObject *v)
+getround(decimal_state *state, PyObject *v)
 {
     int i;
-
     if (PyUnicode_Check(v)) {
         for (i = 0; i < _PY_DEC_ROUND_GUARD; i++) {
-            if (v == round_map[i]) {
+            if (v == state->round_map[i]) {
                 return i;
             }
         }
         for (i = 0; i < _PY_DEC_ROUND_GUARD; i++) {
-            if (PyUnicode_Compare(v, round_map[i]) == 0) {
+            if (PyUnicode_Compare(v, state->round_map[i]) == 0) {
                 return i;
             }
         }
@@ -540,6 +607,8 @@ getround(PyObject *v)
    initialized to new SignalDicts. Once a SignalDict is tied to
    a context, it cannot be deleted. */
 
+static const char *INVALID_SIGNALDICT_ERROR_MSG = "invalid signal dict";
+
 static int
 signaldict_init(PyObject *self, PyObject *args UNUSED, PyObject *kwds UNUSED)
 {
@@ -548,24 +617,34 @@ signaldict_init(PyObject *self, PyObject *args UNUSED, PyObject *kwds UNUSED)
 }
 
 static Py_ssize_t
-signaldict_len(PyObject *self UNUSED)
+signaldict_len(PyObject *self)
 {
+    if (SdFlagAddr(self) == NULL) {
+        return value_error_int(INVALID_SIGNALDICT_ERROR_MSG);
+    }
     return SIGNAL_MAP_LEN;
 }
 
-static PyObject *SignalTuple;
 static PyObject *
-signaldict_iter(PyObject *self UNUSED)
+signaldict_iter(PyObject *self)
 {
-    return PyTuple_Type.tp_iter(SignalTuple);
+    if (SdFlagAddr(self) == NULL) {
+        return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
+    }
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    return PyTuple_Type.tp_iter(state->SignalTuple);
 }
 
 static PyObject *
 signaldict_getitem(PyObject *self, PyObject *key)
 {
     uint32_t flag;
+    if (SdFlagAddr(self) == NULL) {
+        return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
+    }
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
 
-    flag = exception_as_flag(key);
+    flag = exception_as_flag(state, key);
     if (flag & DEC_ERRORS) {
         return NULL;
     }
@@ -579,11 +658,16 @@ signaldict_setitem(PyObject *self, PyObject *key, PyObject *value)
     uint32_t flag;
     int x;
 
+    if (SdFlagAddr(self) == NULL) {
+        return value_error_int(INVALID_SIGNALDICT_ERROR_MSG);
+    }
+
     if (value == NULL) {
         return value_error_int("signal keys cannot be deleted");
     }
 
-    flag = exception_as_flag(key);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    flag = exception_as_flag(state, key);
     if (flag & DEC_ERRORS) {
         return -1;
     }
@@ -603,6 +687,22 @@ signaldict_setitem(PyObject *self, PyObject *key, PyObject *value)
     return 0;
 }
 
+static int
+signaldict_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    return 0;
+}
+
+static void
+signaldict_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    PyObject_GC_UnTrack(self);
+    tp->tp_free(self);
+    Py_DECREF(tp);
+}
+
 static PyObject *
 signaldict_repr(PyObject *self)
 {
@@ -611,9 +711,14 @@ signaldict_repr(PyObject *self)
     const char *b[SIGNAL_MAP_LEN]; /* bool */
     int i;
 
+    if (SdFlagAddr(self) == NULL) {
+        return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
+    }
+
     assert(SIGNAL_MAP_LEN == 9);
 
-    for (cm=signal_map, i=0; cm->name != NULL; cm++, i++) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    for (cm=state->signal_map, i=0; cm->name != NULL; cm++, i++) {
         n[i] = cm->fqname;
         b[i] = SdFlags(self)&cm->flag ? "True" : "False";
     }
@@ -631,14 +736,19 @@ signaldict_richcompare(PyObject *v, PyObject *w, int op)
 {
     PyObject *res = Py_NotImplemented;
 
-    assert(PyDecSignalDict_Check(v));
+    decimal_state *state = find_state_left_or_right(v, w);
+    assert(PyDecSignalDict_Check(state, v));
+
+    if ((SdFlagAddr(v) == NULL) || (SdFlagAddr(w) == NULL)) {
+        return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
+    }
 
     if (op == Py_EQ || op == Py_NE) {
-        if (PyDecSignalDict_Check(w)) {
+        if (PyDecSignalDict_Check(state, w)) {
             res = (SdFlags(v)==SdFlags(w)) ^ (op==Py_NE) ? Py_True : Py_False;
         }
         else if (PyDict_Check(w)) {
-            uint32_t flags = dict_as_flags(w);
+            uint32_t flags = dict_as_flags(state, w);
             if (flags & DEC_ERRORS) {
                 if (flags & DEC_INVALID_SIGNALS) {
                     /* non-comparable: Py_NotImplemented */
@@ -660,62 +770,44 @@ signaldict_richcompare(PyObject *v, PyObject *w, int op)
 static PyObject *
 signaldict_copy(PyObject *self, PyObject *args UNUSED)
 {
-    return flags_as_dict(SdFlags(self));
+    if (SdFlagAddr(self) == NULL) {
+        return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
+    }
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    return flags_as_dict(state, SdFlags(self));
 }
 
 
-static PyMappingMethods signaldict_as_mapping = {
-    (lenfunc)signaldict_len,          /* mp_length */
-    (binaryfunc)signaldict_getitem,   /* mp_subscript */
-    (objobjargproc)signaldict_setitem /* mp_ass_subscript */
-};
-
 static PyMethodDef signaldict_methods[] = {
     { "copy", (PyCFunction)signaldict_copy, METH_NOARGS, NULL},
     {NULL, NULL}
 };
 
 
-static PyTypeObject PyDecSignalDictMixin_Type =
-{
-    PyVarObject_HEAD_INIT(0, 0)
-    "decimal.SignalDictMixin",                /* tp_name */
-    sizeof(PyDecSignalDictObject),            /* tp_basicsize */
-    0,                                        /* tp_itemsize */
-    0,                                        /* tp_dealloc */
-    0,                                        /* tp_vectorcall_offset */
-    (getattrfunc) 0,                          /* tp_getattr */
-    (setattrfunc) 0,                          /* tp_setattr */
-    0,                                        /* tp_as_async */
-    (reprfunc) signaldict_repr,               /* tp_repr */
-    0,                                        /* tp_as_number */
-    0,                                        /* tp_as_sequence */
-    &signaldict_as_mapping,                   /* tp_as_mapping */
-    PyObject_HashNotImplemented,              /* tp_hash */
-    0,                                        /* tp_call */
-    (reprfunc) 0,                             /* tp_str */
-    PyObject_GenericGetAttr,                  /* tp_getattro */
-    (setattrofunc) 0,                         /* tp_setattro */
-    (PyBufferProcs *) 0,                      /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,   /* tp_flags */
-    0,                                        /* tp_doc */
-    0,                                        /* tp_traverse */
-    0,                                        /* tp_clear */
-    signaldict_richcompare,                   /* tp_richcompare */
-    0,                                        /* tp_weaklistoffset */
-    (getiterfunc)signaldict_iter,             /* tp_iter */
-    0,                                        /* tp_iternext */
-    signaldict_methods,                       /* tp_methods */
-    0,                                        /* tp_members */
-    0,                                        /* tp_getset */
-    0,                                        /* tp_base */
-    0,                                        /* tp_dict */
-    0,                                        /* tp_descr_get */
-    0,                                        /* tp_descr_set */
-    0,                                        /* tp_dictoffset */
-    (initproc)signaldict_init,                /* tp_init */
-    0,                                        /* tp_alloc */
-    PyType_GenericNew,                        /* tp_new */
+static PyType_Slot signaldict_slots[] = {
+    {Py_tp_dealloc, signaldict_dealloc},
+    {Py_tp_traverse, signaldict_traverse},
+    {Py_tp_repr, signaldict_repr},
+    {Py_tp_hash, PyObject_HashNotImplemented},
+    {Py_tp_getattro, PyObject_GenericGetAttr},
+    {Py_tp_richcompare, signaldict_richcompare},
+    {Py_tp_iter, signaldict_iter},
+    {Py_tp_methods, signaldict_methods},
+    {Py_tp_init, signaldict_init},
+
+    // Mapping protocol
+    {Py_mp_length, signaldict_len},
+    {Py_mp_subscript, signaldict_getitem},
+    {Py_mp_ass_subscript, signaldict_setitem},
+    {0, NULL},
+};
+
+static PyType_Spec signaldict_spec = {
+    .name = "decimal.SignalDictMixin",
+    .basicsize = sizeof(PyDecSignalDictObject),
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+              Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
+    .slots = signaldict_slots,
 };
 
 
@@ -751,8 +843,9 @@ static PyObject *
 context_getround(PyObject *self, void *closure UNUSED)
 {
     int i = mpd_getround(CTX(self));
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
 
-    return Py_NewRef(round_map[i]);
+    return Py_NewRef(state->round_map[i]);
 }
 
 static PyObject *
@@ -909,7 +1002,8 @@ context_setround(PyObject *self, PyObject *value, void *closure UNUSED)
     mpd_context_t *ctx;
     int x;
 
-    x = getround(value);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    x = getround(state, value);
     if (x == -1) {
         return -1;
     }
@@ -967,8 +1061,8 @@ context_settraps_list(PyObject *self, PyObject *value)
 {
     mpd_context_t *ctx;
     uint32_t flags;
-
-    flags = list_as_flags(value);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    flags = list_as_flags(state, value);
     if (flags & DEC_ERRORS) {
         return -1;
     }
@@ -987,11 +1081,12 @@ context_settraps_dict(PyObject *self, PyObject *value)
     mpd_context_t *ctx;
     uint32_t flags;
 
-    if (PyDecSignalDict_Check(value)) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    if (PyDecSignalDict_Check(state, value)) {
         flags = SdFlags(value);
     }
     else {
-        flags = dict_as_flags(value);
+        flags = dict_as_flags(state, value);
         if (flags & DEC_ERRORS) {
             return -1;
         }
@@ -1031,8 +1126,9 @@ context_setstatus_list(PyObject *self, PyObject *value)
 {
     mpd_context_t *ctx;
     uint32_t flags;
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
 
-    flags = list_as_flags(value);
+    flags = list_as_flags(state, value);
     if (flags & DEC_ERRORS) {
         return -1;
     }
@@ -1051,11 +1147,12 @@ context_setstatus_dict(PyObject *self, PyObject *value)
     mpd_context_t *ctx;
     uint32_t flags;
 
-    if (PyDecSignalDict_Check(value)) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    if (PyDecSignalDict_Check(state, value)) {
         flags = SdFlags(value);
     }
     else {
-        flags = dict_as_flags(value);
+        flags = dict_as_flags(state, value);
         if (flags & DEC_ERRORS) {
             return -1;
         }
@@ -1241,8 +1338,9 @@ context_new(PyTypeObject *type, PyObject *args UNUSED, PyObject *kwds UNUSED)
     PyDecContextObject *self = NULL;
     mpd_context_t *ctx;
 
-    if (type == &PyDecContext_Type) {
-        self = PyObject_New(PyDecContextObject, &PyDecContext_Type);
+    decimal_state *state = get_module_state_by_def(type);
+    if (type == state->PyDecContext_Type) {
+        self = PyObject_GC_New(PyDecContextObject, state->PyDecContext_Type);
     }
     else {
         self = (PyDecContextObject *)type->tp_alloc(type, 0);
@@ -1252,13 +1350,13 @@ context_new(PyTypeObject *type, PyObject *args UNUSED, PyObject *kwds UNUSED)
         return NULL;
     }
 
-    self->traps = PyObject_CallObject((PyObject *)PyDecSignalDict_Type, NULL);
+    self->traps = PyObject_CallObject((PyObject *)state->PyDecSignalDict_Type, NULL);
     if (self->traps == NULL) {
         self->flags = NULL;
         Py_DECREF(self);
         return NULL;
     }
-    self->flags = PyObject_CallObject((PyObject *)PyDecSignalDict_Type, NULL);
+    self->flags = PyObject_CallObject((PyObject *)state->PyDecSignalDict_Type, NULL);
     if (self->flags == NULL) {
         Py_DECREF(self);
         return NULL;
@@ -1266,8 +1364,8 @@ context_new(PyTypeObject *type, PyObject *args UNUSED, PyObject *kwds UNUSED)
 
     ctx = CTX(self);
 
-    if (default_context_template) {
-        *ctx = *CTX(default_context_template);
+    if (state->default_context_template) {
+        *ctx = *CTX(state->default_context_template);
     }
     else {
         *ctx = dflt_ctx;
@@ -1282,18 +1380,37 @@ context_new(PyTypeObject *type, PyObject *args UNUSED, PyObject *kwds UNUSED)
     return (PyObject *)self;
 }
 
+static int
+context_traverse(PyDecContextObject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    Py_VISIT(self->traps);
+    Py_VISIT(self->flags);
+    return 0;
+}
+
+static int
+context_clear(PyDecContextObject *self)
+{
+    Py_CLEAR(self->traps);
+    Py_CLEAR(self->flags);
+    return 0;
+}
+
 static void
 context_dealloc(PyDecContextObject *self)
 {
+    PyTypeObject *tp = Py_TYPE(self);
+    PyObject_GC_UnTrack(self);
 #ifndef WITH_DECIMAL_CONTEXTVAR
-    if (self == cached_context) {
-        cached_context = NULL;
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    if (self == state->cached_context) {
+        state->cached_context = NULL;
     }
 #endif
-
-    Py_XDECREF(self->traps);
-    Py_XDECREF(self->flags);
-    Py_TYPE(self)->tp_free(self);
+    (void)context_clear(self);
+    tp->tp_free(self);
+    Py_DECREF(tp);
 }
 
 static int
@@ -1337,7 +1454,10 @@ context_repr(PyDecContextObject *self)
     char traps[MPD_MAX_SIGNAL_LIST];
     int n, mem;
 
-    assert(PyDecContext_Check(self));
+#ifdef Py_DEBUG
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    assert(PyDecContext_Check(state, self));
+#endif
     ctx = CTX(self);
 
     mem = MPD_MAX_SIGNAL_LIST;
@@ -1403,7 +1523,8 @@ ieee_context(PyObject *dummy UNUSED, PyObject *v)
         goto error;
     }
 
-    context = PyObject_CallObject((PyObject *)&PyDecContext_Type, NULL);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(v));
+    context = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL);
     if (context == NULL) {
         return NULL;
     }
@@ -1425,7 +1546,8 @@ context_copy(PyObject *self, PyObject *args UNUSED)
 {
     PyObject *copy;
 
-    copy = PyObject_CallObject((PyObject *)&PyDecContext_Type, NULL);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    copy = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL);
     if (copy == NULL) {
         return NULL;
     }
@@ -1444,14 +1566,15 @@ context_reduce(PyObject *self, PyObject *args UNUSED)
     PyObject *traps;
     PyObject *ret;
     mpd_context_t *ctx;
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
 
     ctx = CTX(self);
 
-    flags = signals_as_list(ctx->status);
+    flags = signals_as_list(state, ctx->status);
     if (flags == NULL) {
         return NULL;
     }
-    traps = signals_as_list(ctx->traps);
+    traps = signals_as_list(state, ctx->traps);
     if (traps == NULL) {
         Py_DECREF(flags);
         return NULL;
@@ -1487,18 +1610,18 @@ static PyGetSetDef context_getsets [] =
 };
 
 
-#define CONTEXT_CHECK(obj) \
-    if (!PyDecContext_Check(obj)) {        \
+#define CONTEXT_CHECK(state, obj) \
+    if (!PyDecContext_Check(state, obj)) { \
         PyErr_SetString(PyExc_TypeError,   \
             "argument must be a context"); \
         return NULL;                       \
     }
 
-#define CONTEXT_CHECK_VA(obj) \
+#define CONTEXT_CHECK_VA(state, obj) \
     if (obj == Py_None) {                           \
-        CURRENT_CONTEXT(obj);                       \
+        CURRENT_CONTEXT(state, obj);                \
     }                                               \
-    else if (!PyDecContext_Check(obj)) {            \
+    else if (!PyDecContext_Check(state, obj)) {     \
         PyErr_SetString(PyExc_TypeError,            \
             "optional argument must be a context"); \
         return NULL;                                \
@@ -1519,7 +1642,7 @@ static PyGetSetDef context_getsets [] =
 #ifndef WITH_DECIMAL_CONTEXTVAR
 /* Get the context from the thread state dictionary. */
 static PyObject *
-current_context_from_dict(void)
+current_context_from_dict(decimal_state *modstate)
 {
     PyThreadState *tstate = _PyThreadState_GET();
 #ifdef Py_DEBUG
@@ -1534,10 +1657,11 @@ current_context_from_dict(void)
         return NULL;
     }
 
-    PyObject *tl_context = PyDict_GetItemWithError(dict, tls_context_key);
+    PyObject *tl_context;
+    tl_context = PyDict_GetItemWithError(dict, modstate->tls_context_key);
     if (tl_context != NULL) {
         /* We already have a thread local context. */
-        CONTEXT_CHECK(tl_context);
+        CONTEXT_CHECK(modstate, tl_context);
     }
     else {
         if (PyErr_Occurred()) {
@@ -1545,13 +1669,13 @@ current_context_from_dict(void)
         }
 
         /* Set up a new thread local context. */
-        tl_context = context_copy(default_context_template, NULL);
+        tl_context = context_copy(modstate->default_context_template, NULL);
         if (tl_context == NULL) {
             return NULL;
         }
         CTX(tl_context)->status = 0;
 
-        if (PyDict_SetItem(dict, tls_context_key, tl_context) < 0) {
+        if (PyDict_SetItem(dict, modstate->tls_context_key, tl_context) < 0) {
             Py_DECREF(tl_context);
             return NULL;
         }
@@ -1560,8 +1684,8 @@ current_context_from_dict(void)
 
     /* Cache the context of the current thread, assuming that it
      * will be accessed several times before a thread switch. */
-    cached_context = (PyDecContextObject *)tl_context;
-    cached_context->tstate = tstate;
+    modstate->cached_context = (PyDecContextObject *)tl_context;
+    modstate->cached_context->tstate = tstate;
 
     /* Borrowed reference with refcount==1 */
     return tl_context;
@@ -1569,44 +1693,42 @@ current_context_from_dict(void)
 
 /* Return borrowed reference to thread local context. */
 static PyObject *
-current_context(void)
+current_context(decimal_state *modstate)
 {
     PyThreadState *tstate = _PyThreadState_GET();
-    if (cached_context && cached_context->tstate == tstate) {
-        return (PyObject *)cached_context;
+    if (modstate->cached_context && modstate->cached_context->tstate == tstate) {
+        return (PyObject *)(modstate->cached_context);
     }
 
-    return current_context_from_dict();
+    return current_context_from_dict(modstate);
 }
 
 /* ctxobj := borrowed reference to the current context */
-#define CURRENT_CONTEXT(ctxobj) \
-    ctxobj = current_context(); \
+#define CURRENT_CONTEXT(state, ctxobj) \
+    ctxobj = current_context(state); \
     if (ctxobj == NULL) {       \
         return NULL;            \
     }
 
 /* Return a new reference to the current context */
 static PyObject *
-PyDec_GetCurrentContext(PyObject *self UNUSED, PyObject *args UNUSED)
+PyDec_GetCurrentContext(PyObject *self, PyObject *args UNUSED)
 {
     PyObject *context;
+    decimal_state *state = get_module_state(self);
 
-    context = current_context();
-    if (context == NULL) {
-        return NULL;
-    }
-
+    CURRENT_CONTEXT(state, context);
     return Py_NewRef(context);
 }
 
 /* Set the thread local context to a new context, decrement old reference */
 static PyObject *
-PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
+PyDec_SetCurrentContext(PyObject *self, PyObject *v)
 {
     PyObject *dict;
 
-    CONTEXT_CHECK(v);
+    decimal_state *state = get_module_state(self);
+    CONTEXT_CHECK(state, v);
 
     dict = PyThreadState_GetDict();
     if (dict == NULL) {
@@ -1617,9 +1739,9 @@ PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
 
     /* If the new context is one of the templates, make a copy.
      * This is the current behavior of decimal.py. */
-    if (v == default_context_template ||
-        v == basic_context_template ||
-        v == extended_context_template) {
+    if (v == state->default_context_template ||
+        v == state->basic_context_template ||
+        v == state->extended_context_template) {
         v = context_copy(v, NULL);
         if (v == NULL) {
             return NULL;
@@ -1630,8 +1752,8 @@ PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
         Py_INCREF(v);
     }
 
-    cached_context = NULL;
-    if (PyDict_SetItem(dict, tls_context_key, v) < 0) {
+    state->cached_context = NULL;
+    if (PyDict_SetItem(dict, state->tls_context_key, v) < 0) {
         Py_DECREF(v);
         return NULL;
     }
@@ -1641,15 +1763,15 @@ PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
 }
 #else
 static PyObject *
-init_current_context(void)
+init_current_context(decimal_state *state)
 {
-    PyObject *tl_context = context_copy(default_context_template, NULL);
+    PyObject *tl_context = context_copy(state->default_context_template, NULL);
     if (tl_context == NULL) {
         return NULL;
     }
     CTX(tl_context)->status = 0;
 
-    PyObject *tok = PyContextVar_Set(current_context_var, tl_context);
+    PyObject *tok = PyContextVar_Set(state->current_context_var, tl_context);
     if (tok == NULL) {
         Py_DECREF(tl_context);
         return NULL;
@@ -1660,10 +1782,10 @@ init_current_context(void)
 }
 
 static inline PyObject *
-current_context(void)
+current_context(decimal_state *state)
 {
     PyObject *tl_context;
-    if (PyContextVar_Get(current_context_var, NULL, &tl_context) < 0) {
+    if (PyContextVar_Get(state->current_context_var, NULL, &tl_context) < 0) {
         return NULL;
     }
 
@@ -1671,12 +1793,12 @@ current_context(void)
         return tl_context;
     }
 
-    return init_current_context();
+    return init_current_context(state);
 }
 
 /* ctxobj := borrowed reference to the current context */
-#define CURRENT_CONTEXT(ctxobj) \
-    ctxobj = current_context(); \
+#define CURRENT_CONTEXT(state, ctxobj) \
+    ctxobj = current_context(state);   \
     if (ctxobj == NULL) {       \
         return NULL;            \
     }                           \
@@ -1684,22 +1806,24 @@ current_context(void)
 
 /* Return a new reference to the current context */
 static PyObject *
-PyDec_GetCurrentContext(PyObject *self UNUSED, PyObject *args UNUSED)
+PyDec_GetCurrentContext(PyObject *self, PyObject *args UNUSED)
 {
-    return current_context();
+    decimal_state *state = get_module_state(self);
+    return current_context(state);
 }
 
 /* Set the thread local context to a new context, decrement old reference */
 static PyObject *
-PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
+PyDec_SetCurrentContext(PyObject *self, PyObject *v)
 {
-    CONTEXT_CHECK(v);
+    decimal_state *state = get_module_state(self);
+    CONTEXT_CHECK(state, v);
 
     /* If the new context is one of the templates, make a copy.
      * This is the current behavior of decimal.py. */
-    if (v == default_context_template ||
-        v == basic_context_template ||
-        v == extended_context_template) {
+    if (v == state->default_context_template ||
+        v == state->basic_context_template ||
+        v == state->extended_context_template) {
         v = context_copy(v, NULL);
         if (v == NULL) {
             return NULL;
@@ -1710,7 +1834,7 @@ PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
         Py_INCREF(v);
     }
 
-    PyObject *tok = PyContextVar_Set(current_context_var, v);
+    PyObject *tok = PyContextVar_Set(state->current_context_var, v);
     Py_DECREF(v);
     if (tok == NULL) {
         return NULL;
@@ -1725,7 +1849,7 @@ PyDec_SetCurrentContext(PyObject *self UNUSED, PyObject *v)
  * owns one reference to the global (outer) context and one
  * to the local (inner) context. */
 static PyObject *
-ctxmanager_new(PyTypeObject *type UNUSED, PyObject *args, PyObject *kwds)
+ctxmanager_new(PyObject *m, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {
       "ctx", "prec", "rounding",
@@ -1733,7 +1857,6 @@ ctxmanager_new(PyTypeObject *type UNUSED, PyObject *args, PyObject *kwds)
       "clamp", "flags", "traps",
       NULL
     };
-    PyDecContextManagerObject *self;
     PyObject *local = Py_None;
     PyObject *global;
 
@@ -1746,7 +1869,8 @@ ctxmanager_new(PyTypeObject *type UNUSED, PyObject *args, PyObject *kwds)
     PyObject *flags = Py_None;
     PyObject *traps = Py_None;
 
-    CURRENT_CONTEXT(global);
+    decimal_state *state = get_module_state(m);
+    CURRENT_CONTEXT(state, global);
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOOOOOOOO", kwlist, &local,
           &prec, &rounding, &Emin, &Emax, &capitals, &clamp, &flags, &traps)) {
         return NULL;
@@ -1754,46 +1878,68 @@ ctxmanager_new(PyTypeObject *type UNUSED, PyObject *args, PyObject *kwds)
     if (local == Py_None) {
         local = global;
     }
-    else if (!PyDecContext_Check(local)) {
+    else if (!PyDecContext_Check(state, local)) {
         PyErr_SetString(PyExc_TypeError,
             "optional argument must be a context");
         return NULL;
     }
 
-    self = PyObject_New(PyDecContextManagerObject,
-                        &PyDecContextManager_Type);
-    if (self == NULL) {
+    PyObject *local_copy = context_copy(local, NULL);
+    if (local_copy == NULL) {
         return NULL;
     }
 
-    self->local = context_copy(local, NULL);
-    if (self->local == NULL) {
-        self->global = NULL;
-        Py_DECREF(self);
-        return NULL;
-    }
-    self->global = Py_NewRef(global);
-
     int ret = context_setattrs(
-        self->local, prec, rounding,
+        local_copy, prec, rounding,
         Emin, Emax, capitals,
         clamp, flags, traps
     );
-
     if (ret < 0) {
-        Py_DECREF(self);
+        Py_DECREF(local_copy);
         return NULL;
     }
 
+    PyDecContextManagerObject *self;
+    self = PyObject_GC_New(PyDecContextManagerObject,
+                           state->PyDecContextManager_Type);
+    if (self == NULL) {
+        Py_DECREF(local_copy);
+        return NULL;
+    }
+
+    self->local = local_copy;
+    self->global = Py_NewRef(global);
+    PyObject_GC_Track(self);
+
     return (PyObject *)self;
 }
 
+static int
+ctxmanager_traverse(PyDecContextManagerObject *self, visitproc visit,
+                    void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    Py_VISIT(self->local);
+    Py_VISIT(self->global);
+    return 0;
+}
+
+static int
+ctxmanager_clear(PyDecContextManagerObject *self)
+{
+    Py_CLEAR(self->local);
+    Py_CLEAR(self->global);
+    return 0;
+}
+
 static void
 ctxmanager_dealloc(PyDecContextManagerObject *self)
 {
-    Py_XDECREF(self->local);
-    Py_XDECREF(self->global);
-    PyObject_Free(self);
+    PyTypeObject *tp = Py_TYPE(self);
+    PyObject_GC_UnTrack(self);
+    (void)ctxmanager_clear(self);
+    tp->tp_free((PyObject *)self);
+    Py_DECREF(tp);
 }
 
 static PyObject *
@@ -1801,7 +1947,7 @@ ctxmanager_set_local(PyDecContextManagerObject *self, PyObject *args UNUSED)
 {
     PyObject *ret;
 
-    ret = PyDec_SetCurrentContext(NULL, self->local);
+    ret = PyDec_SetCurrentContext(PyType_GetModule(Py_TYPE(self)), self->local);
     if (ret == NULL) {
         return NULL;
     }
@@ -1816,7 +1962,7 @@ ctxmanager_restore_global(PyDecContextManagerObject *self,
 {
     PyObject *ret;
 
-    ret = PyDec_SetCurrentContext(NULL, self->global);
+    ret = PyDec_SetCurrentContext(PyType_GetModule(Py_TYPE(self)), self->global);
     if (ret == NULL) {
         return NULL;
     }
@@ -1832,36 +1978,21 @@ static PyMethodDef ctxmanager_methods[] = {
   {NULL, NULL}
 };
 
-static PyTypeObject PyDecContextManager_Type =
-{
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "decimal.ContextManager",               /* tp_name */
-    sizeof(PyDecContextManagerObject),      /* tp_basicsize */
-    0,                                      /* tp_itemsize */
-    (destructor) ctxmanager_dealloc,        /* tp_dealloc */
-    0,                                      /* tp_vectorcall_offset */
-    (getattrfunc) 0,                        /* tp_getattr */
-    (setattrfunc) 0,                        /* tp_setattr */
-    0,                                      /* tp_as_async */
-    (reprfunc) 0,                           /* tp_repr */
-    0,                                      /* tp_as_number */
-    0,                                      /* tp_as_sequence */
-    0,                                      /* tp_as_mapping */
-    0,                                      /* tp_hash */
-    0,                                      /* tp_call */
-    0,                                      /* tp_str */
-    (getattrofunc) PyObject_GenericGetAttr, /* tp_getattro */
-    (setattrofunc) 0,                       /* tp_setattro */
-    (PyBufferProcs *) 0,                    /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT,                     /* tp_flags */
-    0,                                      /* tp_doc */
-    0,                                      /* tp_traverse */
-    0,                                      /* tp_clear */
-    0,                                      /* tp_richcompare */
-    0,                                      /* tp_weaklistoffset */
-    0,                                      /* tp_iter */
-    0,                                      /* tp_iternext */
-    ctxmanager_methods,                     /* tp_methods */
+static PyType_Slot ctxmanager_slots[] = {
+    {Py_tp_dealloc, ctxmanager_dealloc},
+    {Py_tp_getattro, PyObject_GenericGetAttr},
+    {Py_tp_traverse, ctxmanager_traverse},
+    {Py_tp_clear, ctxmanager_clear},
+    {Py_tp_methods, ctxmanager_methods},
+    {0, NULL},
+};
+
+static PyType_Spec ctxmanager_spec = {
+    .name = "decimal.ContextManager",
+    .basicsize = sizeof(PyDecContextManagerObject),
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
+              Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_DISALLOW_INSTANTIATION),
+    .slots = ctxmanager_slots,
 };
 
 
@@ -1874,8 +2005,9 @@ PyDecType_New(PyTypeObject *type)
 {
     PyDecObject *dec;
 
-    if (type == &PyDec_Type) {
-        dec = PyObject_New(PyDecObject, &PyDec_Type);
+    decimal_state *state = get_module_state_by_def(type);
+    if (type == state->PyDec_Type) {
+        dec = PyObject_GC_New(PyDecObject, state->PyDec_Type);
     }
     else {
         dec = (PyDecObject *)type->tp_alloc(type, 0);
@@ -1895,13 +2027,23 @@ PyDecType_New(PyTypeObject *type)
 
     return (PyObject *)dec;
 }
-#define dec_alloc() PyDecType_New(&PyDec_Type)
+#define dec_alloc(st) PyDecType_New((st)->PyDec_Type)
+
+static int
+dec_traverse(PyObject *dec, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(dec));
+    return 0;
+}
 
 static void
 dec_dealloc(PyObject *dec)
 {
+    PyTypeObject *tp = Py_TYPE(dec);
+    PyObject_GC_UnTrack(dec);
     mpd_del(MPD(dec));
-    Py_TYPE(dec)->tp_free(dec);
+    tp->tp_free(dec);
+    Py_DECREF(tp);
 }
 
 
@@ -1934,10 +2076,6 @@ numeric_as_ascii(PyObject *u, int strip_ws, int ignore_underscores)
     Py_ssize_t j, len;
     int d;
 
-    if (PyUnicode_READY(u) == -1) {
-        return NULL;
-    }
-
     kind = PyUnicode_KIND(u);
     data = PyUnicode_DATA(u);
     len =  PyUnicode_GET_LENGTH(u);
@@ -2240,14 +2378,6 @@ PyDecType_FromLongExact(PyTypeObject *type, PyObject *v,
     return dec;
 }
 
-/* External C-API functions */
-static binaryfunc _py_long_multiply;
-static binaryfunc _py_long_floor_divide;
-static ternaryfunc _py_long_power;
-static unaryfunc _py_float_abs;
-static PyCFunction _py_long_bit_length;
-static PyCFunction _py_float_as_integer_ratio;
-
 /* Return a PyDecObject or a subtype from a PyFloatObject.
    Conversion is exact. */
 static PyObject *
@@ -2262,10 +2392,11 @@ PyDecType_FromFloatExact(PyTypeObject *type, PyObject *v,
     mpd_t *d1, *d2;
     uint32_t status = 0;
     mpd_context_t maxctx;
+    decimal_state *state = get_module_state_by_def(type);
 
-
-    assert(PyType_IsSubtype(type, &PyDec_Type));
-
+#ifdef Py_DEBUG
+    assert(PyType_IsSubtype(type, state->PyDec_Type));
+#endif
     if (PyLong_Check(v)) {
         return PyDecType_FromLongExact(type, v, context);
     }
@@ -2298,13 +2429,13 @@ PyDecType_FromFloatExact(PyTypeObject *type, PyObject *v,
     }
 
     /* absolute value of the float */
-    tmp = _py_float_abs(v);
+    tmp = state->_py_float_abs(v);
     if (tmp == NULL) {
         return NULL;
     }
 
     /* float as integer ratio: numerator/denominator */
-    n_d = _py_float_as_integer_ratio(tmp, NULL);
+    n_d = state->_py_float_as_integer_ratio(tmp, NULL);
     Py_DECREF(tmp);
     if (n_d == NULL) {
         return NULL;
@@ -2312,7 +2443,7 @@ PyDecType_FromFloatExact(PyTypeObject *type, PyObject *v,
     n = PyTuple_GET_ITEM(n_d, 0);
     d = PyTuple_GET_ITEM(n_d, 1);
 
-    tmp = _py_long_bit_length(d, NULL);
+    tmp = state->_py_long_bit_length(d, NULL);
     if (tmp == NULL) {
         Py_DECREF(n_d);
         return NULL;
@@ -2399,7 +2530,8 @@ PyDecType_FromDecimalExact(PyTypeObject *type, PyObject *v, PyObject *context)
     PyObject *dec;
     uint32_t status = 0;
 
-    if (type == &PyDec_Type && PyDec_CheckExact(v)) {
+    decimal_state *state = get_module_state_by_def(type);
+    if (type == state->PyDec_Type && PyDec_CheckExact(state, v)) {
         return Py_NewRef(v);
     }
 
@@ -2634,37 +2766,37 @@ PyDecType_FromSequenceExact(PyTypeObject *type, PyObject *v,
     return dec;
 }
 
-#define PyDec_FromCString(str, context) \
-        PyDecType_FromCString(&PyDec_Type, str, context)
-#define PyDec_FromCStringExact(str, context) \
-        PyDecType_FromCStringExact(&PyDec_Type, str, context)
+#define PyDec_FromCString(st, str, context) \
+        PyDecType_FromCString((st)->PyDec_Type, str, context)
+#define PyDec_FromCStringExact(st, str, context) \
+        PyDecType_FromCStringExact((st)->PyDec_Type, str, context)
 
-#define PyDec_FromUnicode(unicode, context) \
-        PyDecType_FromUnicode(&PyDec_Type, unicode, context)
-#define PyDec_FromUnicodeExact(unicode, context) \
-        PyDecType_FromUnicodeExact(&PyDec_Type, unicode, context)
-#define PyDec_FromUnicodeExactWS(unicode, context) \
-        PyDecType_FromUnicodeExactWS(&PyDec_Type, unicode, context)
+#define PyDec_FromUnicode(st, unicode, context) \
+        PyDecType_FromUnicode((st)->PyDec_Type, unicode, context)
+#define PyDec_FromUnicodeExact(st, unicode, context) \
+        PyDecType_FromUnicodeExact((st)->PyDec_Type, unicode, context)
+#define PyDec_FromUnicodeExactWS(st, unicode, context) \
+        PyDecType_FromUnicodeExactWS((st)->PyDec_Type, unicode, context)
 
-#define PyDec_FromSsize(v, context) \
-        PyDecType_FromSsize(&PyDec_Type, v, context)
-#define PyDec_FromSsizeExact(v, context) \
-        PyDecType_FromSsizeExact(&PyDec_Type, v, context)
+#define PyDec_FromSsize(st, v, context) \
+        PyDecType_FromSsize((st)->PyDec_Type, v, context)
+#define PyDec_FromSsizeExact(st, v, context) \
+        PyDecType_FromSsizeExact((st)->PyDec_Type, v, context)
 
-#define PyDec_FromLong(pylong, context) \
-        PyDecType_FromLong(&PyDec_Type, pylong, context)
-#define PyDec_FromLongExact(pylong, context) \
-        PyDecType_FromLongExact(&PyDec_Type, pylong, context)
+#define PyDec_FromLong(st, pylong, context) \
+        PyDecType_FromLong((st)->PyDec_Type, pylong, context)
+#define PyDec_FromLongExact(st, pylong, context) \
+        PyDecType_FromLongExact((st)->PyDec_Type, pylong, context)
 
-#define PyDec_FromFloat(pyfloat, context) \
-        PyDecType_FromFloat(&PyDec_Type, pyfloat, context)
-#define PyDec_FromFloatExact(pyfloat, context) \
-        PyDecType_FromFloatExact(&PyDec_Type, pyfloat, context)
+#define PyDec_FromFloat(st, pyfloat, context) \
+        PyDecType_FromFloat((st)->PyDec_Type, pyfloat, context)
+#define PyDec_FromFloatExact(st, pyfloat, context) \
+        PyDecType_FromFloatExact((st)->PyDec_Type, pyfloat, context)
 
-#define PyDec_FromSequence(sequence, context) \
-        PyDecType_FromSequence(&PyDec_Type, sequence, context)
-#define PyDec_FromSequenceExact(sequence, context) \
-        PyDecType_FromSequenceExact(&PyDec_Type, sequence, context)
+#define PyDec_FromSequence(st, sequence, context) \
+        PyDecType_FromSequence((st)->PyDec_Type, sequence, context)
+#define PyDec_FromSequenceExact(st, sequence, context) \
+        PyDecType_FromSequenceExact((st)->PyDec_Type, sequence, context)
 
 /* class method */
 static PyObject *
@@ -2673,9 +2805,10 @@ dec_from_float(PyObject *type, PyObject *pyfloat)
     PyObject *context;
     PyObject *result;
 
-    CURRENT_CONTEXT(context);
-    result = PyDecType_FromFloatExact(&PyDec_Type, pyfloat, context);
-    if (type != (PyObject *)&PyDec_Type && result != NULL) {
+    decimal_state *state = get_module_state_by_def((PyTypeObject *)type);
+    CURRENT_CONTEXT(state, context);
+    result = PyDecType_FromFloatExact(state->PyDec_Type, pyfloat, context);
+    if (type != (PyObject *)state->PyDec_Type && result != NULL) {
         Py_SETREF(result, PyObject_CallFunctionObjArgs(type, result, NULL));
     }
 
@@ -2686,7 +2819,8 @@ dec_from_float(PyObject *type, PyObject *pyfloat)
 static PyObject *
 ctx_from_float(PyObject *context, PyObject *v)
 {
-    return PyDec_FromFloat(v, context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    return PyDec_FromFloat(state, v, context);
 }
 
 /* Apply the context to the input operand. Return a new PyDecObject. */
@@ -2696,7 +2830,8 @@ dec_apply(PyObject *v, PyObject *context)
     PyObject *result;
     uint32_t status = 0;
 
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    result = dec_alloc(state);
     if (result == NULL) {
         return NULL;
     }
@@ -2722,10 +2857,11 @@ dec_apply(PyObject *v, PyObject *context)
 static PyObject *
 PyDecType_FromObjectExact(PyTypeObject *type, PyObject *v, PyObject *context)
 {
+    decimal_state *state = get_module_state_by_def(type);
     if (v == NULL) {
         return PyDecType_FromSsizeExact(type, 0, context);
     }
-    else if (PyDec_Check(v)) {
+    else if (PyDec_Check(state, v)) {
         return PyDecType_FromDecimalExact(type, v, context);
     }
     else if (PyUnicode_Check(v)) {
@@ -2756,10 +2892,11 @@ PyDecType_FromObjectExact(PyTypeObject *type, PyObject *v, PyObject *context)
 static PyObject *
 PyDec_FromObject(PyObject *v, PyObject *context)
 {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
     if (v == NULL) {
-        return PyDec_FromSsize(0, context);
+        return PyDec_FromSsize(state, 0, context);
     }
-    else if (PyDec_Check(v)) {
+    else if (PyDec_Check(state, v)) {
         mpd_context_t *ctx = CTX(context);
         if (mpd_isnan(MPD(v)) &&
             MPD(v)->digits > ctx->prec - ctx->clamp) {
@@ -2768,7 +2905,7 @@ PyDec_FromObject(PyObject *v, PyObject *context)
             if (dec_addstatus(context, MPD_Conversion_syntax)) {
                 return NULL;
             }
-            result = dec_alloc();
+            result = dec_alloc(state);
             if (result == NULL) {
                 return NULL;
             }
@@ -2778,19 +2915,19 @@ PyDec_FromObject(PyObject *v, PyObject *context)
         return dec_apply(v, context);
     }
     else if (PyUnicode_Check(v)) {
-        return PyDec_FromUnicode(v, context);
+        return PyDec_FromUnicode(state, v, context);
     }
     else if (PyLong_Check(v)) {
-        return PyDec_FromLong(v, context);
+        return PyDec_FromLong(state, v, context);
     }
     else if (PyTuple_Check(v) || PyList_Check(v)) {
-        return PyDec_FromSequence(v, context);
+        return PyDec_FromSequence(state, v, context);
     }
     else if (PyFloat_Check(v)) {
         if (dec_addstatus(context, MPD_Float_operation)) {
             return NULL;
         }
-        return PyDec_FromFloat(v, context);
+        return PyDec_FromFloat(state, v, context);
     }
     else {
         PyErr_Format(PyExc_TypeError,
@@ -2811,7 +2948,8 @@ dec_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
                                      &v, &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(type);
+    CONTEXT_CHECK_VA(state, context);
 
     return PyDecType_FromObjectExact(type, v, context);
 }
@@ -2841,13 +2979,13 @@ ctx_create_decimal(PyObject *context, PyObject *args)
 Py_LOCAL_INLINE(int)
 convert_op(int type_err, PyObject **conv, PyObject *v, PyObject *context)
 {
-
-    if (PyDec_Check(v)) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    if (PyDec_Check(state, v)) {
         *conv = Py_NewRef(v);
         return 1;
     }
     if (PyLong_Check(v)) {
-        *conv = PyDec_FromLongExact(v, context);
+        *conv = PyDec_FromLongExact(state, v, context);
         if (*conv == NULL) {
             return 0;
         }
@@ -2928,8 +3066,6 @@ convert_op(int type_err, PyObject **conv, PyObject *v, PyObject *context)
 /*              Implicit conversions to Decimal for comparison                */
 /******************************************************************************/
 
-/* Convert rationals for comparison */
-static PyObject *Rational = NULL;
 static PyObject *
 multiply_by_denominator(PyObject *v, PyObject *r, PyObject *context)
 {
@@ -2946,7 +3082,8 @@ multiply_by_denominator(PyObject *v, PyObject *r, PyObject *context)
     if (tmp == NULL) {
         return NULL;
     }
-    denom = PyDec_FromLongExact(tmp, context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    denom = PyDec_FromLongExact(state, tmp, context);
     Py_DECREF(tmp);
     if (denom == NULL) {
         return NULL;
@@ -2958,7 +3095,7 @@ multiply_by_denominator(PyObject *v, PyObject *r, PyObject *context)
         PyErr_NoMemory();
         return NULL;
     }
-    result = dec_alloc();
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(denom);
         mpd_del(vv);
@@ -3000,7 +3137,8 @@ numerator_as_decimal(PyObject *r, PyObject *context)
         return NULL;
     }
 
-    num = PyDec_FromLongExact(tmp, context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    num = PyDec_FromLongExact(state, tmp, context);
     Py_DECREF(tmp);
     return num;
 }
@@ -3018,11 +3156,12 @@ convert_op_cmp(PyObject **vcmp, PyObject **wcmp, PyObject *v, PyObject *w,
 
     *vcmp = v;
 
-    if (PyDec_Check(w)) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    if (PyDec_Check(state, w)) {
         *wcmp = Py_NewRef(w);
     }
     else if (PyLong_Check(w)) {
-        *wcmp = PyDec_FromLongExact(w, context);
+        *wcmp = PyDec_FromLongExact(state, w, context);
     }
     else if (PyFloat_Check(w)) {
         if (op != Py_EQ && op != Py_NE &&
@@ -3031,7 +3170,7 @@ convert_op_cmp(PyObject **vcmp, PyObject **wcmp, PyObject *v, PyObject *w,
         }
         else {
             ctx->status |= MPD_Float_operation;
-            *wcmp = PyDec_FromFloatExact(w, context);
+            *wcmp = PyDec_FromFloatExact(state, w, context);
         }
     }
     else if (PyComplex_Check(w) && (op == Py_EQ || op == Py_NE)) {
@@ -3046,7 +3185,7 @@ convert_op_cmp(PyObject **vcmp, PyObject **wcmp, PyObject *v, PyObject *w,
             }
             else {
                 ctx->status |= MPD_Float_operation;
-                *wcmp = PyDec_FromFloatExact(tmp, context);
+                *wcmp = PyDec_FromFloatExact(state, tmp, context);
                 Py_DECREF(tmp);
             }
         }
@@ -3055,7 +3194,7 @@ convert_op_cmp(PyObject **vcmp, PyObject **wcmp, PyObject *v, PyObject *w,
         }
     }
     else {
-        int is_rational = PyObject_IsInstance(w, Rational);
+        int is_rational = PyObject_IsInstance(w, state->Rational);
         if (is_rational < 0) {
             *wcmp = NULL;
         }
@@ -3115,7 +3254,8 @@ dec_str(PyObject *dec)
     mpd_ssize_t size;
     char *cp;
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CURRENT_CONTEXT(state, context);
     size = mpd_to_sci_size(&cp, MPD(dec), CtxCaps(context));
     if (size < 0) {
         PyErr_NoMemory();
@@ -3133,8 +3273,8 @@ dec_repr(PyObject *dec)
 {
     PyObject *res, *context;
     char *cp;
-
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CURRENT_CONTEXT(state, context);
     cp = mpd_to_sci(MPD(dec), CtxCaps(context));
     if (cp == NULL) {
         PyErr_NoMemory();
@@ -3295,7 +3435,8 @@ dec_format(PyObject *dec, PyObject *args)
     mpd_t tmp = {MPD_STATIC|MPD_STATIC_DATA,0,0,0,MPD_MINALLOC_MAX,dt};
 
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CURRENT_CONTEXT(state, context);
     if (!PyArg_ParseTuple(args, "O|O", &fmtarg, &override)) {
         return NULL;
     }
@@ -3452,6 +3593,12 @@ dec_format(PyObject *dec, PyObject *args)
     if (replace_fillchar) {
         dec_replace_fillchar(decstring);
     }
+    if (strchr(fmt, 'N') != NULL) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                         "Format specifier 'N' is deprecated", 1) < 0) {
+            goto finish;
+        }
+    }
 
     result = PyUnicode_DecodeUTF8(decstring, size, NULL);
 
@@ -3558,9 +3705,10 @@ dec_as_integer_ratio(PyObject *self, PyObject *args UNUSED)
         return NULL;
     }
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CURRENT_CONTEXT(state, context);
 
-    tmp = dec_alloc();
+    tmp = dec_alloc(state);
     if (tmp == NULL) {
         return NULL;
     }
@@ -3591,14 +3739,14 @@ dec_as_integer_ratio(PyObject *self, PyObject *args UNUSED)
         goto error;
     }
 
-    Py_SETREF(exponent, _py_long_power(tmp, exponent, Py_None));
+    Py_SETREF(exponent, state->_py_long_power(tmp, exponent, Py_None));
     Py_DECREF(tmp);
     if (exponent == NULL) {
         goto error;
     }
 
     if (exp >= 0) {
-        Py_SETREF(numerator, _py_long_multiply(numerator, exponent));
+        Py_SETREF(numerator, state->_py_long_multiply(numerator, exponent));
         if (numerator == NULL) {
             goto error;
         }
@@ -3614,10 +3762,14 @@ dec_as_integer_ratio(PyObject *self, PyObject *args UNUSED)
         if (tmp == NULL) {
             goto error;
         }
-        Py_SETREF(numerator, _py_long_floor_divide(numerator, tmp));
-        Py_SETREF(denominator, _py_long_floor_divide(denominator, tmp));
+        Py_SETREF(numerator, state->_py_long_floor_divide(numerator, tmp));
+        if (numerator == NULL) {
+            Py_DECREF(tmp);
+            goto error;
+        }
+        Py_SETREF(denominator, state->_py_long_floor_divide(denominator, tmp));
         Py_DECREF(tmp);
-        if (numerator == NULL || denominator == NULL) {
+        if (denominator == NULL) {
             goto error;
         }
     }
@@ -3646,11 +3798,12 @@ PyDec_ToIntegralValue(PyObject *dec, PyObject *args, PyObject *kwds)
                                      &rounding, &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CONTEXT_CHECK_VA(state, context);
 
     workctx = *CTX(context);
     if (rounding != Py_None) {
-        int round = getround(rounding);
+        int round = getround(state, rounding);
         if (round < 0) {
             return NULL;
         }
@@ -3659,7 +3812,7 @@ PyDec_ToIntegralValue(PyObject *dec, PyObject *args, PyObject *kwds)
         }
     }
 
-    result = dec_alloc();
+    result = dec_alloc(state);
     if (result == NULL) {
         return NULL;
     }
@@ -3687,11 +3840,12 @@ PyDec_ToIntegralExact(PyObject *dec, PyObject *args, PyObject *kwds)
                                      &rounding, &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CONTEXT_CHECK_VA(state, context);
 
     workctx = *CTX(context);
     if (rounding != Py_None) {
-        int round = getround(rounding);
+        int round = getround(state, rounding);
         if (round < 0) {
             return NULL;
         }
@@ -3700,7 +3854,7 @@ PyDec_ToIntegralExact(PyObject *dec, PyObject *args, PyObject *kwds)
         }
     }
 
-    result = dec_alloc();
+    result = dec_alloc(state);
     if (result == NULL) {
         return NULL;
     }
@@ -3754,8 +3908,8 @@ PyDec_Round(PyObject *dec, PyObject *args)
     uint32_t status = 0;
     PyObject *context;
 
-
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CURRENT_CONTEXT(state, context);
     if (!PyArg_ParseTuple(args, "|O", &x)) {
         return NULL;
     }
@@ -3775,7 +3929,7 @@ PyDec_Round(PyObject *dec, PyObject *args)
         if (y == -1 && PyErr_Occurred()) {
             return NULL;
         }
-        result = dec_alloc();
+        result = dec_alloc(state);
         if (result == NULL) {
             return NULL;
         }
@@ -3794,7 +3948,6 @@ PyDec_Round(PyObject *dec, PyObject *args)
     }
 }
 
-static PyTypeObject *DecimalTuple = NULL;
 /* Return the DecimalTuple representation of a PyDecObject. */
 static PyObject *
 PyDec_AsTuple(PyObject *dec, PyObject *dummy UNUSED)
@@ -3877,7 +4030,8 @@ PyDec_AsTuple(PyObject *dec, PyObject *dummy UNUSED)
         }
     }
 
-    result = PyObject_CallFunctionObjArgs((PyObject *)DecimalTuple,
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    result = PyObject_CallFunctionObjArgs((PyObject *)state->DecimalTuple,
                                           sign, coeff, expt, NULL);
 
 out:
@@ -3903,8 +4057,9 @@ nm_##MPDFUNC(PyObject *self)                                \
     PyObject *context;                                      \
     uint32_t status = 0;                                    \
                                                             \
-    CURRENT_CONTEXT(context);                               \
-    if ((result = dec_alloc()) == NULL) {                   \
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));   \
+    CURRENT_CONTEXT(state, context);                        \
+    if ((result = dec_alloc(state)) == NULL) {              \
         return NULL;                                        \
     }                                                       \
                                                             \
@@ -3927,10 +4082,11 @@ nm_##MPDFUNC(PyObject *self, PyObject *other)                    \
     PyObject *context;                                           \
     uint32_t status = 0;                                         \
                                                                  \
-    CURRENT_CONTEXT(context) ;                                   \
+    decimal_state *state = find_state_left_or_right(self, other);  \
+    CURRENT_CONTEXT(state, context) ;                            \
     CONVERT_BINOP(&a, &b, self, other, context);                 \
                                                                  \
-    if ((result = dec_alloc()) == NULL) {                        \
+    if ((result = dec_alloc(state)) == NULL) {                   \
         Py_DECREF(a);                                            \
         Py_DECREF(b);                                            \
         return NULL;                                             \
@@ -3967,7 +4123,8 @@ dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds)             \
                                      &context)) {                         \
         return NULL;                                                      \
     }                                                                     \
-    CONTEXT_CHECK_VA(context);                                            \
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));        \
+    CONTEXT_CHECK_VA(state, context);                                     \
                                                                           \
     return MPDFUNC(MPD(self), CTX(context)) ? incr_true() : incr_false(); \
 }
@@ -3986,9 +4143,11 @@ dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds)  \
                                      &context)) {              \
         return NULL;                                           \
     }                                                          \
-    CONTEXT_CHECK_VA(context);                                 \
+    decimal_state *state =                                     \
+        get_module_state_by_def(Py_TYPE(self));                \
+    CONTEXT_CHECK_VA(state, context);                          \
                                                                \
-    if ((result = dec_alloc()) == NULL) {                      \
+    if ((result = dec_alloc(state)) == NULL) {                 \
         return NULL;                                           \
     }                                                          \
                                                                \
@@ -4017,10 +4176,12 @@ dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds)    \
                                      &other, &context)) {        \
         return NULL;                                             \
     }                                                            \
-    CONTEXT_CHECK_VA(context);                                   \
+    decimal_state *state =                                       \
+        get_module_state_by_def(Py_TYPE(self));                  \
+    CONTEXT_CHECK_VA(state, context);                            \
     CONVERT_BINOP_RAISE(&a, &b, self, other, context);           \
                                                                  \
-    if ((result = dec_alloc()) == NULL) {                        \
+    if ((result = dec_alloc(state)) == NULL) {                   \
         Py_DECREF(a);                                            \
         Py_DECREF(b);                                            \
         return NULL;                                             \
@@ -4054,10 +4215,12 @@ dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds)   \
                                      &other, &context)) {       \
         return NULL;                                            \
     }                                                           \
-    CONTEXT_CHECK_VA(context);                                  \
+    decimal_state *state =                                      \
+        get_module_state_by_def(Py_TYPE(self));                 \
+    CONTEXT_CHECK_VA(state, context);                           \
     CONVERT_BINOP_RAISE(&a, &b, self, other, context);          \
                                                                 \
-    if ((result = dec_alloc()) == NULL) {                       \
+    if ((result = dec_alloc(state)) == NULL) {                  \
         Py_DECREF(a);                                           \
         Py_DECREF(b);                                           \
         return NULL;                                            \
@@ -4086,10 +4249,11 @@ dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds)            \
                                      &other, &third, &context)) {        \
         return NULL;                                                     \
     }                                                                    \
-    CONTEXT_CHECK_VA(context);                                           \
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));       \
+    CONTEXT_CHECK_VA(state, context);                                    \
     CONVERT_TERNOP_RAISE(&a, &b, &c, self, other, third, context);       \
                                                                          \
-    if ((result = dec_alloc()) == NULL) {                                \
+    if ((result = dec_alloc(state)) == NULL) {                           \
         Py_DECREF(a);                                                    \
         Py_DECREF(b);                                                    \
         Py_DECREF(c);                                                    \
@@ -4128,8 +4292,8 @@ static PyObject *
 nm_dec_as_long(PyObject *dec)
 {
     PyObject *context;
-
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
+    CURRENT_CONTEXT(state, context);
     return dec_as_long(dec, context, MPD_ROUND_DOWN);
 }
 
@@ -4148,16 +4312,17 @@ nm_mpd_qdivmod(PyObject *v, PyObject *w)
     uint32_t status = 0;
     PyObject *ret;
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = find_state_left_or_right(v, w);
+    CURRENT_CONTEXT(state, context);
     CONVERT_BINOP(&a, &b, v, w, context);
 
-    q = dec_alloc();
+    q = dec_alloc(state);
     if (q == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
         return NULL;
     }
-    r = dec_alloc();
+    r = dec_alloc(state);
     if (r == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -4188,7 +4353,8 @@ nm_mpd_qpow(PyObject *base, PyObject *exp, PyObject *mod)
     PyObject *context;
     uint32_t status = 0;
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = find_state_left_or_right(base, exp);
+    CURRENT_CONTEXT(state, context);
     CONVERT_BINOP(&a, &b, base, exp, context);
 
     if (mod != Py_None) {
@@ -4199,7 +4365,7 @@ nm_mpd_qpow(PyObject *base, PyObject *exp, PyObject *mod)
         }
     }
 
-    result = dec_alloc();
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -4296,11 +4462,12 @@ dec_conjugate(PyObject *self, PyObject *dummy UNUSED)
 }
 
 static PyObject *
-dec_mpd_radix(PyObject *self UNUSED, PyObject *dummy UNUSED)
+dec_mpd_radix(PyObject *self, PyObject *dummy UNUSED)
 {
     PyObject *result;
 
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    result = dec_alloc(state);
     if (result == NULL) {
         return NULL;
     }
@@ -4315,7 +4482,8 @@ dec_mpd_qcopy_abs(PyObject *self, PyObject *dummy UNUSED)
     PyObject *result;
     uint32_t status = 0;
 
-    if ((result = dec_alloc()) == NULL) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    if ((result = dec_alloc(state)) == NULL) {
         return NULL;
     }
 
@@ -4335,7 +4503,8 @@ dec_mpd_qcopy_negate(PyObject *self, PyObject *dummy UNUSED)
     PyObject *result;
     uint32_t status = 0;
 
-    if ((result = dec_alloc()) == NULL) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    if ((result = dec_alloc(state)) == NULL) {
         return NULL;
     }
 
@@ -4364,7 +4533,8 @@ dec_mpd_class(PyObject *self, PyObject *args, PyObject *kwds)
                                      &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CONTEXT_CHECK_VA(state, context);
 
     cp = mpd_class(MPD(self), CTX(context));
     return PyUnicode_FromString(cp);
@@ -4383,7 +4553,8 @@ dec_mpd_to_eng(PyObject *self, PyObject *args, PyObject *kwds)
                                      &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CONTEXT_CHECK_VA(state, context);
 
     size = mpd_to_eng_size(&s, MPD(self), CtxCaps(context));
     if (size < 0) {
@@ -4415,10 +4586,11 @@ dec_mpd_qcopy_sign(PyObject *self, PyObject *args, PyObject *kwds)
                                      &other, &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CONTEXT_CHECK_VA(state, context);
     CONVERT_BINOP_RAISE(&a, &b, self, other, context);
 
-    result = dec_alloc();
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -4449,7 +4621,8 @@ dec_mpd_same_quantum(PyObject *self, PyObject *args, PyObject *kwds)
                                      &other, &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CONTEXT_CHECK_VA(state, context);
     CONVERT_BINOP_RAISE(&a, &b, self, other, context);
 
     result = mpd_same_quantum(MPD(a), MPD(b)) ? incr_true() : incr_false();
@@ -4483,11 +4656,12 @@ dec_mpd_qquantize(PyObject *v, PyObject *args, PyObject *kwds)
                                      &w, &rounding, &context)) {
         return NULL;
     }
-    CONTEXT_CHECK_VA(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(v));
+    CONTEXT_CHECK_VA(state, context);
 
     workctx = *CTX(context);
     if (rounding != Py_None) {
-        int round = getround(rounding);
+        int round = getround(state, rounding);
         if (round < 0) {
             return NULL;
         }
@@ -4498,7 +4672,7 @@ dec_mpd_qquantize(PyObject *v, PyObject *args, PyObject *kwds)
 
     CONVERT_BINOP_RAISE(&a, &b, v, w, context);
 
-    result = dec_alloc();
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -4526,10 +4700,12 @@ dec_richcompare(PyObject *v, PyObject *w, int op)
     uint32_t status = 0;
     int a_issnan, b_issnan;
     int r;
+    decimal_state *state = find_state_left_or_right(v, w);
 
-    assert(PyDec_Check(v));
-
-    CURRENT_CONTEXT(context);
+#ifdef Py_DEBUG
+    assert(PyDec_Check(state, v));
+#endif
+    CURRENT_CONTEXT(state, context);
     CONVERT_BINOP_CMP(&a, &b, v, w, op, context);
 
     a_issnan = mpd_issnan(MPD(a));
@@ -4580,7 +4756,8 @@ dec_ceil(PyObject *self, PyObject *dummy UNUSED)
 {
     PyObject *context;
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CURRENT_CONTEXT(state, context);
     return dec_as_long(self, context, MPD_ROUND_CEILING);
 }
 
@@ -4618,7 +4795,8 @@ dec_floor(PyObject *self, PyObject *dummy UNUSED)
 {
     PyObject *context;
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CURRENT_CONTEXT(state, context);
     return dec_as_long(self, context, MPD_ROUND_FLOOR);
 }
 
@@ -4782,7 +4960,8 @@ dec_trunc(PyObject *self, PyObject *dummy UNUSED)
 {
     PyObject *context;
 
-    CURRENT_CONTEXT(context);
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    CURRENT_CONTEXT(state, context);
     return dec_as_long(self, context, MPD_ROUND_DOWN);
 }
 
@@ -4798,7 +4977,8 @@ dec_imag(PyObject *self UNUSED, void *closure UNUSED)
 {
     PyObject *result;
 
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
+    result = dec_alloc(state);
     if (result == NULL) {
         return NULL;
     }
@@ -4815,43 +4995,6 @@ static PyGetSetDef dec_getsets [] =
   {NULL}
 };
 
-static PyNumberMethods dec_number_methods =
-{
-    (binaryfunc) nm_mpd_qadd,
-    (binaryfunc) nm_mpd_qsub,
-    (binaryfunc) nm_mpd_qmul,
-    (binaryfunc) nm_mpd_qrem,
-    (binaryfunc) nm_mpd_qdivmod,
-    (ternaryfunc) nm_mpd_qpow,
-    (unaryfunc) nm_mpd_qminus,
-    (unaryfunc) nm_mpd_qplus,
-    (unaryfunc) nm_mpd_qabs,
-    (inquiry) nm_nonzero,
-    (unaryfunc) 0,   /* no bit-complement */
-    (binaryfunc) 0,  /* no shiftl */
-    (binaryfunc) 0,  /* no shiftr */
-    (binaryfunc) 0,  /* no bit-and */
-    (binaryfunc) 0,  /* no bit-xor */
-    (binaryfunc) 0,  /* no bit-ior */
-    (unaryfunc) nm_dec_as_long,
-    0,               /* nb_reserved */
-    (unaryfunc) PyDec_AsFloat,
-    0,               /* binaryfunc nb_inplace_add; */
-    0,               /* binaryfunc nb_inplace_subtract; */
-    0,               /* binaryfunc nb_inplace_multiply; */
-    0,               /* binaryfunc nb_inplace_remainder; */
-    0,               /* ternaryfunc nb_inplace_power; */
-    0,               /* binaryfunc nb_inplace_lshift; */
-    0,               /* binaryfunc nb_inplace_rshift; */
-    0,               /* binaryfunc nb_inplace_and; */
-    0,               /* binaryfunc nb_inplace_xor; */
-    0,               /* binaryfunc nb_inplace_or; */
-    (binaryfunc) nm_mpd_qdivint,  /* binaryfunc nb_floor_divide; */
-    (binaryfunc) nm_mpd_qdiv,     /* binaryfunc nb_true_divide; */
-    0,               /* binaryfunc nb_inplace_floor_divide; */
-    0,               /* binaryfunc nb_inplace_true_divide; */
-};
-
 static PyMethodDef dec_methods [] =
 {
   /* Unary arithmetic functions, optional context arg */
@@ -4944,48 +5087,44 @@ static PyMethodDef dec_methods [] =
   { NULL, NULL, 1 }
 };
 
-static PyTypeObject PyDec_Type =
-{
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "decimal.Decimal",                      /* tp_name */
-    sizeof(PyDecObject),                    /* tp_basicsize */
-    0,                                      /* tp_itemsize */
-    (destructor) dec_dealloc,               /* tp_dealloc */
-    0,                                      /* tp_vectorcall_offset */
-    (getattrfunc) 0,                        /* tp_getattr */
-    (setattrfunc) 0,                        /* tp_setattr */
-    0,                                      /* tp_as_async */
-    (reprfunc) dec_repr,                    /* tp_repr */
-    &dec_number_methods,                    /* tp_as_number */
-    0,                                      /* tp_as_sequence */
-    0,                                      /* tp_as_mapping */
-    (hashfunc) dec_hash,                    /* tp_hash */
-    0,                                      /* tp_call */
-    (reprfunc) dec_str,                     /* tp_str */
-    (getattrofunc) PyObject_GenericGetAttr, /* tp_getattro */
-    (setattrofunc) 0,                       /* tp_setattro */
-    (PyBufferProcs *) 0,                    /* tp_as_buffer */
-    (Py_TPFLAGS_DEFAULT|
-     Py_TPFLAGS_BASETYPE),                  /* tp_flags */
-    doc_decimal,                            /* tp_doc */
-    0,                                      /* tp_traverse */
-    0,                                      /* tp_clear */
-    dec_richcompare,                        /* tp_richcompare */
-    0,                                      /* tp_weaklistoffset */
-    0,                                      /* tp_iter */
-    0,                                      /* tp_iternext */
-    dec_methods,                            /* tp_methods */
-    0,                                      /* tp_members */
-    dec_getsets,                            /* tp_getset */
-    0,                                      /* tp_base */
-    0,                                      /* tp_dict */
-    0,                                      /* tp_descr_get */
-    0,                                      /* tp_descr_set */
-    0,                                      /* tp_dictoffset */
-    0,                                      /* tp_init */
-    0,                                      /* tp_alloc */
-    dec_new,                                /* tp_new */
-    PyObject_Del,                           /* tp_free */
+static PyType_Slot dec_slots[] = {
+    {Py_tp_dealloc, dec_dealloc},
+    {Py_tp_getattro, PyObject_GenericGetAttr},
+    {Py_tp_traverse, dec_traverse},
+    {Py_tp_repr, dec_repr},
+    {Py_tp_hash, dec_hash},
+    {Py_tp_str, dec_str},
+    {Py_tp_doc, (void *)doc_decimal},
+    {Py_tp_richcompare, dec_richcompare},
+    {Py_tp_methods, dec_methods},
+    {Py_tp_getset, dec_getsets},
+    {Py_tp_new, dec_new},
+
+    // Number protocol
+    {Py_nb_add, nm_mpd_qadd},
+    {Py_nb_subtract, nm_mpd_qsub},
+    {Py_nb_multiply, nm_mpd_qmul},
+    {Py_nb_remainder, nm_mpd_qrem},
+    {Py_nb_divmod, nm_mpd_qdivmod},
+    {Py_nb_power, nm_mpd_qpow},
+    {Py_nb_negative, nm_mpd_qminus},
+    {Py_nb_positive, nm_mpd_qplus},
+    {Py_nb_absolute, nm_mpd_qabs},
+    {Py_nb_bool, nm_nonzero},
+    {Py_nb_int, nm_dec_as_long},
+    {Py_nb_float, PyDec_AsFloat},
+    {Py_nb_floor_divide, nm_mpd_qdivint},
+    {Py_nb_true_divide, nm_mpd_qdiv},
+    {0, NULL},
+};
+
+
+static PyType_Spec dec_spec = {
+    .name = "decimal.Decimal",
+    .basicsize = sizeof(PyDecObject),
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+              Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
+    .slots = dec_slots,
 };
 
 
@@ -5037,8 +5176,9 @@ ctx_##MPDFUNC(PyObject *context, PyObject *v)            \
     uint32_t status = 0;                                 \
                                                          \
     CONVERT_OP_RAISE(&a, v, context);                    \
-                                                         \
-    if ((result = dec_alloc()) == NULL) {                \
+    decimal_state *state =                               \
+        get_module_state_by_def(Py_TYPE(context));       \
+    if ((result = dec_alloc(state)) == NULL) {           \
         Py_DECREF(a);                                    \
         return NULL;                                     \
     }                                                    \
@@ -5068,8 +5208,9 @@ ctx_##MPDFUNC(PyObject *context, PyObject *args)                 \
     }                                                            \
                                                                  \
     CONVERT_BINOP_RAISE(&a, &b, v, w, context);                  \
-                                                                 \
-    if ((result = dec_alloc()) == NULL) {                        \
+    decimal_state *state =                                       \
+        get_module_state_by_def(Py_TYPE(context));               \
+    if ((result = dec_alloc(state)) == NULL) {                   \
         Py_DECREF(a);                                            \
         Py_DECREF(b);                                            \
         return NULL;                                             \
@@ -5103,8 +5244,9 @@ ctx_##MPDFUNC(PyObject *context, PyObject *args) \
     }                                            \
                                                  \
     CONVERT_BINOP_RAISE(&a, &b, v, w, context);  \
-                                                 \
-    if ((result = dec_alloc()) == NULL) {        \
+    decimal_state *state =                       \
+        get_module_state_by_def(Py_TYPE(context)); \
+    if ((result = dec_alloc(state)) == NULL) {   \
         Py_DECREF(a);                            \
         Py_DECREF(b);                            \
         return NULL;                             \
@@ -5132,8 +5274,8 @@ ctx_##MPDFUNC(PyObject *context, PyObject *args)                         \
     }                                                                    \
                                                                          \
     CONVERT_TERNOP_RAISE(&a, &b, &c, v, w, x, context);                  \
-                                                                         \
-    if ((result = dec_alloc()) == NULL) {                                \
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));    \
+    if ((result = dec_alloc(state)) == NULL) {                           \
         Py_DECREF(a);                                                    \
         Py_DECREF(b);                                                    \
         Py_DECREF(c);                                                    \
@@ -5198,14 +5340,14 @@ ctx_mpd_qdivmod(PyObject *context, PyObject *args)
     }
 
     CONVERT_BINOP_RAISE(&a, &b, v, w, context);
-
-    q = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    q = dec_alloc(state);
     if (q == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
         return NULL;
     }
-    r = dec_alloc();
+    r = dec_alloc(state);
     if (r == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -5253,7 +5395,8 @@ ctx_mpd_qpow(PyObject *context, PyObject *args, PyObject *kwds)
         }
     }
 
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -5302,9 +5445,10 @@ DecCtx_BoolFunc_NO_CTX(mpd_issnan)
 DecCtx_BoolFunc_NO_CTX(mpd_iszero)
 
 static PyObject *
-ctx_iscanonical(PyObject *context UNUSED, PyObject *v)
+ctx_iscanonical(PyObject *context, PyObject *v)
 {
-    if (!PyDec_Check(v)) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    if (!PyDec_Check(state, v)) {
         PyErr_SetString(PyExc_TypeError,
             "argument must be a Decimal");
         return NULL;
@@ -5327,9 +5471,10 @@ PyDecContext_Apply(PyObject *context, PyObject *v)
 }
 
 static PyObject *
-ctx_canonical(PyObject *context UNUSED, PyObject *v)
+ctx_canonical(PyObject *context, PyObject *v)
 {
-    if (!PyDec_Check(v)) {
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    if (!PyDec_Check(state, v)) {
         PyErr_SetString(PyExc_TypeError,
             "argument must be a Decimal");
         return NULL;
@@ -5345,8 +5490,8 @@ ctx_mpd_qcopy_abs(PyObject *context, PyObject *v)
     uint32_t status = 0;
 
     CONVERT_OP_RAISE(&a, v, context);
-
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         return NULL;
@@ -5378,8 +5523,8 @@ ctx_mpd_qcopy_negate(PyObject *context, PyObject *v)
     uint32_t status = 0;
 
     CONVERT_OP_RAISE(&a, v, context);
-
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         return NULL;
@@ -5475,8 +5620,8 @@ ctx_mpd_qcopy_sign(PyObject *context, PyObject *args)
     }
 
     CONVERT_BINOP_RAISE(&a, &b, v, w, context);
-
-    result = dec_alloc();
+    decimal_state *state = get_module_state_by_def(Py_TYPE(context));
+    result = dec_alloc(state);
     if (result == NULL) {
         Py_DECREF(a);
         Py_DECREF(b);
@@ -5629,47 +5774,27 @@ static PyMethodDef context_methods [] =
   { NULL, NULL, 1 }
 };
 
-static PyTypeObject PyDecContext_Type =
-{
-    PyVarObject_HEAD_INIT(NULL, 0)
-    "decimal.Context",                         /* tp_name */
-    sizeof(PyDecContextObject),                /* tp_basicsize */
-    0,                                         /* tp_itemsize */
-    (destructor) context_dealloc,              /* tp_dealloc */
-    0,                                         /* tp_vectorcall_offset */
-    (getattrfunc) 0,                           /* tp_getattr */
-    (setattrfunc) 0,                           /* tp_setattr */
-    0,                                         /* tp_as_async */
-    (reprfunc) context_repr,                   /* tp_repr */
-    0,                                         /* tp_as_number */
-    0,                                         /* tp_as_sequence */
-    0,                                         /* tp_as_mapping */
-    (hashfunc) 0,                              /* tp_hash */
-    0,                                         /* tp_call */
-    0,                                         /* tp_str */
-    (getattrofunc) context_getattr,            /* tp_getattro */
-    (setattrofunc) context_setattr,            /* tp_setattro */
-    (PyBufferProcs *) 0,                       /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,    /* tp_flags */
-    doc_context,                               /* tp_doc */
-    0,                                         /* tp_traverse */
-    0,                                         /* tp_clear */
-    0,                                         /* tp_richcompare */
-    0,                                         /* tp_weaklistoffset */
-    0,                                         /* tp_iter */
-    0,                                         /* tp_iternext */
-    context_methods,                           /* tp_methods */
-    0,                                         /* tp_members */
-    context_getsets,                           /* tp_getset */
-    0,                                         /* tp_base */
-    0,                                         /* tp_dict */
-    0,                                         /* tp_descr_get */
-    0,                                         /* tp_descr_set */
-    0,                                         /* tp_dictoffset */
-    context_init,                              /* tp_init */
-    0,                                         /* tp_alloc */
-    context_new,                               /* tp_new */
-    PyObject_Del,                              /* tp_free */
+static PyType_Slot context_slots[] = {
+    {Py_tp_dealloc, context_dealloc},
+    {Py_tp_traverse, context_traverse},
+    {Py_tp_clear, context_clear},
+    {Py_tp_repr, context_repr},
+    {Py_tp_getattro, context_getattr},
+    {Py_tp_setattro, context_setattr},
+    {Py_tp_doc, (void *)doc_context},
+    {Py_tp_methods, context_methods},
+    {Py_tp_getset, context_getsets},
+    {Py_tp_init, context_init},
+    {Py_tp_new, context_new},
+    {0, NULL},
+};
+
+static PyType_Spec context_spec = {
+    .name = "decimal.Context",
+    .basicsize = sizeof(PyDecContextObject),
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+              Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
+    .slots = context_slots,
 };
 
 
@@ -5684,17 +5809,6 @@ static PyMethodDef _decimal_methods [] =
   { NULL, NULL, 1, NULL }
 };
 
-static struct PyModuleDef _decimal_module = {
-    PyModuleDef_HEAD_INIT,
-    "decimal",
-    doc__decimal,
-    -1,
-    _decimal_methods,
-    NULL,
-    NULL,
-    NULL,
-    NULL
-};
 
 struct ssize_constmap { const char *name; mpd_ssize_t val; };
 static struct ssize_constmap ssize_constants [] = {
@@ -5769,11 +5883,11 @@ cfunc_noargs(PyTypeObject *t, const char *name)
     return NULL;
 }
 
+static int minalloc_is_set = 0;
 
-PyMODINIT_FUNC
-PyInit__decimal(void)
+static int
+_decimal_exec(PyObject *m)
 {
-    PyObject *m = NULL;
     PyObject *numbers = NULL;
     PyObject *Number = NULL;
     PyObject *collections = NULL;
@@ -5792,33 +5906,42 @@ PyInit__decimal(void)
     mpd_reallocfunc = PyMem_Realloc;
     mpd_callocfunc = mpd_callocfunc_em;
     mpd_free = PyMem_Free;
-    mpd_setminalloc(_Py_DEC_MINALLOC);
 
+    /* Suppress the warning caused by multi-phase initialization */
+    if (!minalloc_is_set) {
+        mpd_setminalloc(_Py_DEC_MINALLOC);
+        minalloc_is_set = 1;
+    }
+
+    decimal_state *state = get_module_state(m);
 
     /* Init external C-API functions */
-    _py_long_multiply = PyLong_Type.tp_as_number->nb_multiply;
-    _py_long_floor_divide = PyLong_Type.tp_as_number->nb_floor_divide;
-    _py_long_power = PyLong_Type.tp_as_number->nb_power;
-    _py_float_abs = PyFloat_Type.tp_as_number->nb_absolute;
-    ASSIGN_PTR(_py_float_as_integer_ratio, cfunc_noargs(&PyFloat_Type,
-                                                        "as_integer_ratio"));
-    ASSIGN_PTR(_py_long_bit_length, cfunc_noargs(&PyLong_Type, "bit_length"));
+    state->_py_long_multiply = PyLong_Type.tp_as_number->nb_multiply;
+    state->_py_long_floor_divide = PyLong_Type.tp_as_number->nb_floor_divide;
+    state->_py_long_power = PyLong_Type.tp_as_number->nb_power;
+    state->_py_float_abs = PyFloat_Type.tp_as_number->nb_absolute;
+    ASSIGN_PTR(state->_py_float_as_integer_ratio,
+               cfunc_noargs(&PyFloat_Type, "as_integer_ratio"));
+    ASSIGN_PTR(state->_py_long_bit_length,
+               cfunc_noargs(&PyLong_Type, "bit_length"));
 
 
     /* Init types */
-    PyDec_Type.tp_base = &PyBaseObject_Type;
-    PyDecContext_Type.tp_base = &PyBaseObject_Type;
-    PyDecContextManager_Type.tp_base = &PyBaseObject_Type;
-    PyDecSignalDictMixin_Type.tp_base = &PyBaseObject_Type;
+#define CREATE_TYPE(mod, tp, spec) do {                               \
+    tp = (PyTypeObject *)PyType_FromMetaclass(NULL, mod, spec, NULL); \
+    CHECK_PTR(tp);                                                    \
+} while (0)
 
-    CHECK_INT(PyType_Ready(&PyDec_Type));
-    CHECK_INT(PyType_Ready(&PyDecContext_Type));
-    CHECK_INT(PyType_Ready(&PyDecSignalDictMixin_Type));
-    CHECK_INT(PyType_Ready(&PyDecContextManager_Type));
+    CREATE_TYPE(m, state->PyDec_Type, &dec_spec);
+    CREATE_TYPE(m, state->PyDecContext_Type, &context_spec);
+    CREATE_TYPE(m, state->PyDecContextManager_Type, &ctxmanager_spec);
+    CREATE_TYPE(m, state->PyDecSignalDictMixin_Type, &signaldict_spec);
+
+#undef CREATE_TYPE
 
     ASSIGN_PTR(obj, PyUnicode_FromString("decimal"));
-    CHECK_INT(PyDict_SetItemString(PyDec_Type.tp_dict, "__module__", obj));
-    CHECK_INT(PyDict_SetItemString(PyDecContext_Type.tp_dict,
+    CHECK_INT(PyDict_SetItemString(state->PyDec_Type->tp_dict, "__module__", obj));
+    CHECK_INT(PyDict_SetItemString(state->PyDecContext_Type->tp_dict,
                                    "__module__", obj));
     Py_CLEAR(obj);
 
@@ -5828,22 +5951,22 @@ PyInit__decimal(void)
     ASSIGN_PTR(Number, PyObject_GetAttrString(numbers, "Number"));
     /* Register Decimal with the Number abstract base class */
     ASSIGN_PTR(obj, PyObject_CallMethod(Number, "register", "(O)",
-                                        (PyObject *)&PyDec_Type));
+                                        (PyObject *)state->PyDec_Type));
     Py_CLEAR(obj);
     /* Rational is a global variable used for fraction comparisons. */
-    ASSIGN_PTR(Rational, PyObject_GetAttrString(numbers, "Rational"));
+    ASSIGN_PTR(state->Rational, PyObject_GetAttrString(numbers, "Rational"));
     /* Done with numbers, Number */
     Py_CLEAR(numbers);
     Py_CLEAR(Number);
 
     /* DecimalTuple */
     ASSIGN_PTR(collections, PyImport_ImportModule("collections"));
-    ASSIGN_PTR(DecimalTuple, (PyTypeObject *)PyObject_CallMethod(collections,
+    ASSIGN_PTR(state->DecimalTuple, (PyTypeObject *)PyObject_CallMethod(collections,
                                  "namedtuple", "(ss)", "DecimalTuple",
                                  "sign digits exponent"));
 
     ASSIGN_PTR(obj, PyUnicode_FromString("decimal"));
-    CHECK_INT(PyDict_SetItemString(DecimalTuple->tp_dict, "__module__", obj));
+    CHECK_INT(PyDict_SetItemString(state->DecimalTuple->tp_dict, "__module__", obj));
     Py_CLEAR(obj);
 
     /* MutableMapping */
@@ -5851,10 +5974,10 @@ PyInit__decimal(void)
     ASSIGN_PTR(MutableMapping, PyObject_GetAttrString(collections_abc,
                                                       "MutableMapping"));
     /* Create SignalDict type */
-    ASSIGN_PTR(PyDecSignalDict_Type,
+    ASSIGN_PTR(state->PyDecSignalDict_Type,
                    (PyTypeObject *)PyObject_CallFunction(
                    (PyObject *)&PyType_Type, "s(OO){}",
-                   "SignalDict", &PyDecSignalDictMixin_Type,
+                   "SignalDict", state->PyDecSignalDictMixin_Type,
                    MutableMapping));
 
     /* Done with collections, MutableMapping */
@@ -5862,49 +5985,47 @@ PyInit__decimal(void)
     Py_CLEAR(collections_abc);
     Py_CLEAR(MutableMapping);
 
-
-    /* Create the module */
-    ASSIGN_PTR(m, PyModule_Create(&_decimal_module));
-
     /* Add types to the module */
-    CHECK_INT(PyModule_AddObject(m, "Decimal", Py_NewRef(&PyDec_Type)));
-    CHECK_INT(PyModule_AddObject(m, "Context",
-                                 Py_NewRef(&PyDecContext_Type)));
-    CHECK_INT(PyModule_AddObject(m, "DecimalTuple", Py_NewRef(DecimalTuple)));
+    CHECK_INT(PyModule_AddType(m, state->PyDec_Type));
+    CHECK_INT(PyModule_AddType(m, state->PyDecContext_Type));
+    CHECK_INT(PyModule_AddType(m, state->DecimalTuple));
 
     /* Create top level exception */
-    ASSIGN_PTR(DecimalException, PyErr_NewException(
+    ASSIGN_PTR(state->DecimalException, PyErr_NewException(
                                      "decimal.DecimalException",
                                      PyExc_ArithmeticError, NULL));
-    CHECK_INT(PyModule_AddObject(m, "DecimalException", Py_NewRef(DecimalException)));
+    CHECK_INT(PyModule_AddType(m, (PyTypeObject *)state->DecimalException));
 
     /* Create signal tuple */
-    ASSIGN_PTR(SignalTuple, PyTuple_New(SIGNAL_MAP_LEN));
+    ASSIGN_PTR(state->SignalTuple, PyTuple_New(SIGNAL_MAP_LEN));
 
     /* Add exceptions that correspond to IEEE signals */
+    ASSIGN_PTR(state->signal_map, dec_cond_map_init(signal_map_template,
+                                                    sizeof(signal_map_template)));
     for (i = SIGNAL_MAP_LEN-1; i >= 0; i--) {
         PyObject *base;
 
-        cm = signal_map + i;
+        cm = state->signal_map + i;
 
         switch (cm->flag) {
         case MPD_Float_operation:
-            base = PyTuple_Pack(2, DecimalException, PyExc_TypeError);
+            base = PyTuple_Pack(2, state->DecimalException, PyExc_TypeError);
             break;
         case MPD_Division_by_zero:
-            base = PyTuple_Pack(2, DecimalException, PyExc_ZeroDivisionError);
+            base = PyTuple_Pack(2, state->DecimalException,
+                                PyExc_ZeroDivisionError);
             break;
         case MPD_Overflow:
-            base = PyTuple_Pack(2, signal_map[INEXACT].ex,
-                                   signal_map[ROUNDED].ex);
+            base = PyTuple_Pack(2, state->signal_map[INEXACT].ex,
+                                   state->signal_map[ROUNDED].ex);
             break;
         case MPD_Underflow:
-            base = PyTuple_Pack(3, signal_map[INEXACT].ex,
-                                   signal_map[ROUNDED].ex,
-                                   signal_map[SUBNORMAL].ex);
+            base = PyTuple_Pack(3, state->signal_map[INEXACT].ex,
+                                   state->signal_map[ROUNDED].ex,
+                                   state->signal_map[SUBNORMAL].ex);
             break;
         default:
-            base = PyTuple_Pack(1, DecimalException);
+            base = PyTuple_Pack(1, state->DecimalException);
             break;
         }
 
@@ -5916,10 +6037,10 @@ PyInit__decimal(void)
         Py_DECREF(base);
 
         /* add to module */
-        CHECK_INT(PyModule_AddObject(m, cm->name, Py_NewRef(cm->ex)));
+        CHECK_INT(PyModule_AddObjectRef(m, cm->name, cm->ex));
 
         /* add to signal tuple */
-        PyTuple_SET_ITEM(SignalTuple, i, Py_NewRef(cm->ex));
+        PyTuple_SET_ITEM(state->SignalTuple, i, Py_NewRef(cm->ex));
     }
 
     /*
@@ -5927,16 +6048,18 @@ PyInit__decimal(void)
      * several conditions, including InvalidOperation! Naming the
      * signal IEEEInvalidOperation would prevent the confusion.
      */
-    cond_map[0].ex = signal_map[0].ex;
+    ASSIGN_PTR(state->cond_map, dec_cond_map_init(cond_map_template,
+                                                  sizeof(cond_map_template)));
+    state->cond_map[0].ex = state->signal_map[0].ex;
 
     /* Add remaining exceptions, inherit from InvalidOperation */
-    for (cm = cond_map+1; cm->name != NULL; cm++) {
+    for (cm = state->cond_map+1; cm->name != NULL; cm++) {
         PyObject *base;
         if (cm->flag == MPD_Division_undefined) {
-            base = PyTuple_Pack(2, signal_map[0].ex, PyExc_ZeroDivisionError);
+            base = PyTuple_Pack(2, state->signal_map[0].ex, PyExc_ZeroDivisionError);
         }
         else {
-            base = PyTuple_Pack(1, signal_map[0].ex);
+            base = PyTuple_Pack(1, state->signal_map[0].ex);
         }
         if (base == NULL) {
             goto error; /* GCOV_NOT_REACHED */
@@ -5945,45 +6068,45 @@ PyInit__decimal(void)
         ASSIGN_PTR(cm->ex, PyErr_NewException(cm->fqname, base, NULL));
         Py_DECREF(base);
 
-        CHECK_INT(PyModule_AddObject(m, cm->name, Py_NewRef(cm->ex)));
+        CHECK_INT(PyModule_AddObjectRef(m, cm->name, cm->ex));
     }
 
 
     /* Init default context template first */
-    ASSIGN_PTR(default_context_template,
-               PyObject_CallObject((PyObject *)&PyDecContext_Type, NULL));
-    CHECK_INT(PyModule_AddObject(m, "DefaultContext",
-                                 Py_NewRef(default_context_template)));
+    ASSIGN_PTR(state->default_context_template,
+               PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL));
+    CHECK_INT(PyModule_AddObjectRef(m, "DefaultContext",
+                                    state->default_context_template));
 
 #ifndef WITH_DECIMAL_CONTEXTVAR
-    ASSIGN_PTR(tls_context_key, PyUnicode_FromString("___DECIMAL_CTX__"));
-    CHECK_INT(PyModule_AddObject(m, "HAVE_CONTEXTVAR", Py_NewRef(Py_False)));
+    ASSIGN_PTR(state->tls_context_key,
+               PyUnicode_FromString("___DECIMAL_CTX__"));
+    CHECK_INT(PyModule_AddObjectRef(m, "HAVE_CONTEXTVAR", Py_False));
 #else
-    ASSIGN_PTR(current_context_var, PyContextVar_New("decimal_context", NULL));
-    CHECK_INT(PyModule_AddObject(m, "HAVE_CONTEXTVAR", Py_NewRef(Py_True)));
+    ASSIGN_PTR(state->current_context_var, PyContextVar_New("decimal_context", NULL));
+    CHECK_INT(PyModule_AddObjectRef(m, "HAVE_CONTEXTVAR", Py_True));
 #endif
-    CHECK_INT(PyModule_AddObject(m, "HAVE_THREADS", Py_NewRef(Py_True)));
+    CHECK_INT(PyModule_AddObjectRef(m, "HAVE_THREADS", Py_True));
 
     /* Init basic context template */
-    ASSIGN_PTR(basic_context_template,
-               PyObject_CallObject((PyObject *)&PyDecContext_Type, NULL));
-    init_basic_context(basic_context_template);
-    CHECK_INT(PyModule_AddObject(m, "BasicContext",
-                                 Py_NewRef(basic_context_template)));
+    ASSIGN_PTR(state->basic_context_template,
+               PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL));
+    init_basic_context(state->basic_context_template);
+    CHECK_INT(PyModule_AddObjectRef(m, "BasicContext",
+                                    state->basic_context_template));
 
     /* Init extended context template */
-    ASSIGN_PTR(extended_context_template,
-               PyObject_CallObject((PyObject *)&PyDecContext_Type, NULL));
-    init_extended_context(extended_context_template);
-    CHECK_INT(PyModule_AddObject(m, "ExtendedContext",
-                                 Py_NewRef(extended_context_template)));
+    ASSIGN_PTR(state->extended_context_template,
+               PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL));
+    init_extended_context(state->extended_context_template);
+    CHECK_INT(PyModule_AddObjectRef(m, "ExtendedContext",
+                                    state->extended_context_template));
 
 
     /* Init mpd_ssize_t constants */
     for (ssize_cm = ssize_constants; ssize_cm->name != NULL; ssize_cm++) {
-        ASSIGN_PTR(obj, PyLong_FromSsize_t(ssize_cm->val));
-        CHECK_INT(PyModule_AddObject(m, ssize_cm->name, obj));
-        obj = NULL;
+        CHECK_INT(PyModule_Add(m, ssize_cm->name,
+                               PyLong_FromSsize_t(ssize_cm->val)));
     }
 
     /* Init int constants */
@@ -5994,37 +6117,111 @@ PyInit__decimal(void)
 
     /* Init string constants */
     for (i = 0; i < _PY_DEC_ROUND_GUARD; i++) {
-        ASSIGN_PTR(round_map[i], PyUnicode_InternFromString(mpd_round_string[i]));
-        CHECK_INT(PyModule_AddObject(m, mpd_round_string[i], Py_NewRef(round_map[i])));
+        ASSIGN_PTR(state->round_map[i], PyUnicode_InternFromString(mpd_round_string[i]));
+        CHECK_INT(PyModule_AddObjectRef(m, mpd_round_string[i], state->round_map[i]));
     }
 
     /* Add specification version number */
     CHECK_INT(PyModule_AddStringConstant(m, "__version__", "1.70"));
     CHECK_INT(PyModule_AddStringConstant(m, "__libmpdec_version__", mpd_version()));
 
-
-    return m;
-
+    return 0;
 
 error:
     Py_CLEAR(obj); /* GCOV_NOT_REACHED */
     Py_CLEAR(numbers); /* GCOV_NOT_REACHED */
     Py_CLEAR(Number); /* GCOV_NOT_REACHED */
-    Py_CLEAR(Rational); /* GCOV_NOT_REACHED */
     Py_CLEAR(collections); /* GCOV_NOT_REACHED */
     Py_CLEAR(collections_abc); /* GCOV_NOT_REACHED */
     Py_CLEAR(MutableMapping); /* GCOV_NOT_REACHED */
-    Py_CLEAR(SignalTuple); /* GCOV_NOT_REACHED */
-    Py_CLEAR(DecimalTuple); /* GCOV_NOT_REACHED */
-    Py_CLEAR(default_context_template); /* GCOV_NOT_REACHED */
+
+    return -1;
+}
+
+static int
+decimal_traverse(PyObject *module, visitproc visit, void *arg)
+{
+    decimal_state *state = get_module_state(module);
+    Py_VISIT(state->PyDecContextManager_Type);
+    Py_VISIT(state->PyDecContext_Type);
+    Py_VISIT(state->PyDecSignalDictMixin_Type);
+    Py_VISIT(state->PyDec_Type);
+    Py_VISIT(state->PyDecSignalDict_Type);
+    Py_VISIT(state->DecimalTuple);
+    Py_VISIT(state->DecimalException);
+
 #ifndef WITH_DECIMAL_CONTEXTVAR
-    Py_CLEAR(tls_context_key); /* GCOV_NOT_REACHED */
+    Py_VISIT(state->tls_context_key);
+    Py_VISIT(state->cached_context);
 #else
-    Py_CLEAR(current_context_var); /* GCOV_NOT_REACHED */
+    Py_VISIT(state->current_context_var);
 #endif
-    Py_CLEAR(basic_context_template); /* GCOV_NOT_REACHED */
-    Py_CLEAR(extended_context_template); /* GCOV_NOT_REACHED */
-    Py_CLEAR(m); /* GCOV_NOT_REACHED */
 
-    return NULL; /* GCOV_NOT_REACHED */
+    Py_VISIT(state->default_context_template);
+    Py_VISIT(state->basic_context_template);
+    Py_VISIT(state->extended_context_template);
+    Py_VISIT(state->Rational);
+    Py_VISIT(state->SignalTuple);
+
+    return 0;
+}
+
+static int
+decimal_clear(PyObject *module)
+{
+    decimal_state *state = get_module_state(module);
+    Py_CLEAR(state->PyDecContextManager_Type);
+    Py_CLEAR(state->PyDecContext_Type);
+    Py_CLEAR(state->PyDecSignalDictMixin_Type);
+    Py_CLEAR(state->PyDec_Type);
+    Py_CLEAR(state->PyDecSignalDict_Type);
+    Py_CLEAR(state->DecimalTuple);
+    Py_CLEAR(state->DecimalException);
+
+#ifndef WITH_DECIMAL_CONTEXTVAR
+    Py_CLEAR(state->tls_context_key);
+    Py_CLEAR(state->cached_context);
+#else
+    Py_CLEAR(state->current_context_var);
+#endif
+
+    Py_CLEAR(state->default_context_template);
+    Py_CLEAR(state->basic_context_template);
+    Py_CLEAR(state->extended_context_template);
+    Py_CLEAR(state->Rational);
+    Py_CLEAR(state->SignalTuple);
+
+    PyMem_Free(state->signal_map);
+    PyMem_Free(state->cond_map);
+    return 0;
+}
+
+static void
+decimal_free(void *module)
+{
+    (void)decimal_clear((PyObject *)module);
+}
+
+static struct PyModuleDef_Slot _decimal_slots[] = {
+    {Py_mod_exec, _decimal_exec},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {0, NULL},
+};
+
+static struct PyModuleDef _decimal_module = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "decimal",
+    .m_doc = doc__decimal,
+    .m_size = sizeof(decimal_state),
+    .m_methods = _decimal_methods,
+    .m_slots = _decimal_slots,
+    .m_traverse = decimal_traverse,
+    .m_clear = decimal_clear,
+    .m_free = decimal_free,
+};
+
+PyMODINIT_FUNC
+PyInit__decimal(void)
+{
+    return PyModuleDef_Init(&_decimal_module);
 }
diff --git a/Modules/_decimal/tests/bench.py b/Modules/_decimal/tests/bench.py
index 24e091b6887ccd..640290f2ec7962 100644
--- a/Modules/_decimal/tests/bench.py
+++ b/Modules/_decimal/tests/bench.py
@@ -7,6 +7,8 @@
 
 
 import time
+import sys
+from functools import wraps
 from test.support.import_helper import import_fresh_module
 
 C = import_fresh_module('decimal', fresh=['_decimal'])
@@ -64,66 +66,85 @@ def factorial(n, m):
     else:
         return factorial(n, (n+m)//2) * factorial((n+m)//2 + 1, m)
 
+# Fix failed test cases caused by CVE-2020-10735 patch.
+# See gh-95778 for details.
+def increase_int_max_str_digits(maxdigits):
+    def _increase_int_max_str_digits(func, maxdigits=maxdigits):
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            previous_int_limit = sys.get_int_max_str_digits()
+            sys.set_int_max_str_digits(maxdigits)
+            ans = func(*args, **kwargs)
+            sys.set_int_max_str_digits(previous_int_limit)
+            return ans
+        return wrapper
+    return _increase_int_max_str_digits
+
+def test_calc_pi():
+    print("\n# ======================================================================")
+    print("#                   Calculating pi, 10000 iterations")
+    print("# ======================================================================\n")
+
+    to_benchmark = [pi_float, pi_decimal]
+    if C is not None:
+        to_benchmark.insert(1, pi_cdecimal)
+
+    for prec in [9, 19]:
+        print("\nPrecision: %d decimal digits\n" % prec)
+        for func in to_benchmark:
+            start = time.time()
+            if C is not None:
+                C.getcontext().prec = prec
+            P.getcontext().prec = prec
+            for i in range(10000):
+                x = func()
+            print("%s:" % func.__name__.replace("pi_", ""))
+            print("result: %s" % str(x))
+            print("time: %fs\n" % (time.time()-start))
+
+@increase_int_max_str_digits(maxdigits=10000000)
+def test_factorial():
+    print("\n# ======================================================================")
+    print("#                               Factorial")
+    print("# ======================================================================\n")
 
-print("\n# ======================================================================")
-print("#                   Calculating pi, 10000 iterations")
-print("# ======================================================================\n")
-
-to_benchmark = [pi_float, pi_decimal]
-if C is not None:
-    to_benchmark.insert(1, pi_cdecimal)
-
-for prec in [9, 19]:
-    print("\nPrecision: %d decimal digits\n" % prec)
-    for func in to_benchmark:
-        start = time.time()
-        if C is not None:
-            C.getcontext().prec = prec
-        P.getcontext().prec = prec
-        for i in range(10000):
-            x = func()
-        print("%s:" % func.__name__.replace("pi_", ""))
-        print("result: %s" % str(x))
-        print("time: %fs\n" % (time.time()-start))
-
-
-print("\n# ======================================================================")
-print("#                               Factorial")
-print("# ======================================================================\n")
-
-if C is not None:
-    c = C.getcontext()
-    c.prec = C.MAX_PREC
-    c.Emax = C.MAX_EMAX
-    c.Emin = C.MIN_EMIN
+    if C is not None:
+        c = C.getcontext()
+        c.prec = C.MAX_PREC
+        c.Emax = C.MAX_EMAX
+        c.Emin = C.MIN_EMIN
 
-for n in [100000, 1000000]:
+    for n in [100000, 1000000]:
 
-    print("n = %d\n" % n)
+        print("n = %d\n" % n)
 
-    if C is not None:
-        # C version of decimal
+        if C is not None:
+            # C version of decimal
+            start_calc = time.time()
+            x = factorial(C.Decimal(n), 0)
+            end_calc = time.time()
+            start_conv = time.time()
+            sx = str(x)
+            end_conv = time.time()
+            print("cdecimal:")
+            print("calculation time: %fs" % (end_calc-start_calc))
+            print("conversion time: %fs\n" % (end_conv-start_conv))
+
+        # Python integers
         start_calc = time.time()
-        x = factorial(C.Decimal(n), 0)
+        y = factorial(n, 0)
         end_calc = time.time()
         start_conv = time.time()
-        sx = str(x)
-        end_conv = time.time()
-        print("cdecimal:")
-        print("calculation time: %fs" % (end_calc-start_calc))
-        print("conversion time: %fs\n" % (end_conv-start_conv))
+        sy = str(y)
+        end_conv =  time.time()
 
-    # Python integers
-    start_calc = time.time()
-    y = factorial(n, 0)
-    end_calc = time.time()
-    start_conv = time.time()
-    sy = str(y)
-    end_conv =  time.time()
+        print("int:")
+        print("calculation time: %fs" % (end_calc-start_calc))
+        print("conversion time: %fs\n\n" % (end_conv-start_conv))
 
-    print("int:")
-    print("calculation time: %fs" % (end_calc-start_calc))
-    print("conversion time: %fs\n\n" % (end_conv-start_conv))
+        if C is not None:
+            assert(sx == sy)
 
-    if C is not None:
-        assert(sx == sy)
+if __name__ == "__main__":
+    test_calc_pi()
+    test_factorial()
diff --git a/Modules/_decimal/tests/deccheck.py b/Modules/_decimal/tests/deccheck.py
index edf753f3704a18..bf277dd6879ffe 100644
--- a/Modules/_decimal/tests/deccheck.py
+++ b/Modules/_decimal/tests/deccheck.py
@@ -1301,7 +1301,7 @@ def tfunc():
                 out, _ = p.communicate()
                 write_output(out, p.returncode)
 
-        N = os.cpu_count()
+        N = os.process_cpu_count()
         t = N * [None]
 
         for i in range(N):
diff --git a/Modules/_elementtree.c b/Modules/_elementtree.c
index 42de3c675c2e5a..f9d5793f9b6497 100644
--- a/Modules/_elementtree.c
+++ b/Modules/_elementtree.c
@@ -11,10 +11,17 @@
  *--------------------------------------------------------------------
  */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
 
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+#include "pycore_import.h"        // _PyImport_GetModuleAttrString()
+#include "pycore_pyhash.h"        // _Py_HashSecret
+
+#include <stddef.h>               // offsetof()
+#include "expat.h"
+#include "pyexpat.h"
 
 /* -------------------------------------------------------------------- */
 /* configuration */
@@ -90,6 +97,8 @@ typedef struct {
     PyTypeObject *ElementIter_Type;
     PyTypeObject *TreeBuilder_Type;
     PyTypeObject *XMLParser_Type;
+
+    struct PyExpat_CAPI *expat_capi;
 } elementtreestate;
 
 static struct PyModuleDef elementtreemodule;
@@ -146,6 +155,8 @@ elementtree_clear(PyObject *m)
     Py_CLEAR(st->ElementIter_Type);
     Py_CLEAR(st->TreeBuilder_Type);
     Py_CLEAR(st->XMLParser_Type);
+
+    st->expat_capi = NULL;
     return 0;
 }
 
@@ -876,7 +887,6 @@ LOCAL(PyObject *)
 deepcopy(elementtreestate *st, PyObject *object, PyObject *memo)
 {
     /* do a deep copy of the given object */
-    PyObject *stack[2];
 
     /* Fast paths */
     if (object == Py_None || PyUnicode_CheckExact(object)) {
@@ -911,9 +921,8 @@ deepcopy(elementtreestate *st, PyObject *object, PyObject *memo)
         return NULL;
     }
 
-    stack[0] = object;
-    stack[1] = memo;
-    return _PyObject_FastCall(st->deepcopy_obj, stack, 2);
+    PyObject *args[2] = {object, memo};
+    return PyObject_Vectorcall(st->deepcopy_obj, args, 2, NULL);
 }
 
 
@@ -1442,8 +1451,6 @@ _elementtree_Element_iter_impl(ElementObject *self, PyTypeObject *cls,
 /*[clinic end generated code: output=bff29dc5d4566c68 input=f6944c48d3f84c58]*/
 {
     if (PyUnicode_Check(tag)) {
-        if (PyUnicode_READY(tag) < 0)
-            return NULL;
         if (PyUnicode_GET_LENGTH(tag) == 1 && PyUnicode_READ_CHAR(tag, 0) == '*')
             tag = Py_None;
     }
@@ -2848,14 +2855,14 @@ treebuilder_handle_pi(TreeBuilderObject* self, PyObject* target, PyObject* text)
 {
     PyObject* pi;
     PyObject* this;
-    PyObject* stack[2] = {target, text};
 
     if (treebuilder_flush_data(self) < 0) {
         return NULL;
     }
 
     if (self->pi_factory) {
-        pi = _PyObject_FastCall(self->pi_factory, stack, 2);
+        PyObject* args[2] = {target, text};
+        pi = PyObject_Vectorcall(self->pi_factory, args, 2, NULL);
         if (!pi) {
             return NULL;
         }
@@ -3031,14 +3038,7 @@ _elementtree_TreeBuilder_start_impl(TreeBuilderObject *self, PyObject *tag,
 /* ==================================================================== */
 /* the expat interface */
 
-#include "expat.h"
-#include "pyexpat.h"
-
-/* The PyExpat_CAPI structure is an immutable dispatch table, so it can be
- * cached globally without being in per-module state.
- */
-static struct PyExpat_CAPI *expat_capi;
-#define EXPAT(func) (expat_capi->func)
+#define EXPAT(st, func) ((st)->expat_capi->func)
 
 static XML_Memory_Handling_Suite ExpatMemoryHandler = {
     PyObject_Malloc, PyObject_Realloc, PyObject_Free};
@@ -3147,7 +3147,7 @@ expat_set_error(elementtreestate *st, enum XML_Error error_code,
     PyObject *errmsg, *error, *position, *code;
 
     errmsg = PyUnicode_FromFormat("%s: line %zd, column %zd",
-                message ? message : EXPAT(ErrorString)(error_code),
+                message ? message : EXPAT(st, ErrorString)(error_code),
                 line, column);
     if (errmsg == NULL)
         return;
@@ -3227,8 +3227,8 @@ expat_default_handler(XMLParserObject* self, const XML_Char* data_in,
         expat_set_error(
             st,
             XML_ERROR_UNDEFINED_ENTITY,
-            EXPAT(GetErrorLineNumber)(self->parser),
-            EXPAT(GetErrorColumnNumber)(self->parser),
+            EXPAT(st, GetErrorLineNumber)(self->parser),
+            EXPAT(st, GetErrorColumnNumber)(self->parser),
             message
             );
     }
@@ -3262,10 +3262,14 @@ expat_start_handler(XMLParserObject* self, const XML_Char* tag_in,
         }
         while (attrib_in[0] && attrib_in[1]) {
             PyObject* key = makeuniversal(self, attrib_in[0]);
+            if (key == NULL) {
+                Py_DECREF(attrib);
+                Py_DECREF(tag);
+                return;
+            }
             PyObject* value = PyUnicode_DecodeUTF8(attrib_in[1], strlen(attrib_in[1]), "strict");
-            if (!key || !value) {
-                Py_XDECREF(value);
-                Py_XDECREF(key);
+            if (value == NULL) {
+                Py_DECREF(key);
                 Py_DECREF(attrib);
                 Py_DECREF(tag);
                 return;
@@ -3371,7 +3375,6 @@ expat_start_ns_handler(XMLParserObject* self, const XML_Char* prefix_in,
     PyObject* res = NULL;
     PyObject* uri;
     PyObject* prefix;
-    PyObject* stack[2];
 
     if (PyErr_Occurred())
         return;
@@ -3410,9 +3413,8 @@ expat_start_ns_handler(XMLParserObject* self, const XML_Char* prefix_in,
             return;
         }
 
-        stack[0] = prefix;
-        stack[1] = uri;
-        res = _PyObject_FastCall(self->handle_start_ns, stack, 2);
+        PyObject* args[2] = {prefix, uri};
+        res = PyObject_Vectorcall(self->handle_start_ns, args, 2, NULL);
         Py_DECREF(uri);
         Py_DECREF(prefix);
     }
@@ -3530,12 +3532,11 @@ expat_start_doctype_handler(XMLParserObject *self,
                                            sysid_obj, NULL);
         Py_XDECREF(res);
     }
-    else if (_PyObject_LookupAttr((PyObject *)self, st->str_doctype, &res) > 0) {
+    else if (PyObject_HasAttrWithError((PyObject *)self, st->str_doctype) > 0) {
         (void)PyErr_WarnEx(PyExc_RuntimeWarning,
                 "The doctype() method of XMLParser is ignored.  "
                 "Define doctype() method on the TreeBuilder target.",
                 1);
-        Py_DECREF(res);
     }
 
     Py_DECREF(doctype_name_obj);
@@ -3550,7 +3551,6 @@ expat_pi_handler(XMLParserObject* self, const XML_Char* target_in,
     PyObject* pi_target;
     PyObject* data;
     PyObject* res;
-    PyObject* stack[2];
 
     if (PyErr_Occurred())
         return;
@@ -3580,9 +3580,8 @@ expat_pi_handler(XMLParserObject* self, const XML_Char* target_in,
         if (!data)
             goto error;
 
-        stack[0] = pi_target;
-        stack[1] = data;
-        res = _PyObject_FastCall(self->handle_pi, stack, 2);
+        PyObject* args[2] = {pi_target, data};
+        res = PyObject_Vectorcall(self->handle_pi, args, 2, NULL);
         Py_XDECREF(res);
         Py_DECREF(data);
         Py_DECREF(pi_target);
@@ -3648,8 +3647,8 @@ _elementtree_XMLParser___init___impl(XMLParserObject *self, PyObject *target,
         Py_CLEAR(self->entity);
         return -1;
     }
-
-    self->parser = EXPAT(ParserCreate_MM)(encoding, &ExpatMemoryHandler, "}");
+    elementtreestate *st = self->state;
+    self->parser = EXPAT(st, ParserCreate_MM)(encoding, &ExpatMemoryHandler, "}");
     if (!self->parser) {
         Py_CLEAR(self->entity);
         Py_CLEAR(self->names);
@@ -3657,15 +3656,14 @@ _elementtree_XMLParser___init___impl(XMLParserObject *self, PyObject *target,
         return -1;
     }
     /* expat < 2.1.0 has no XML_SetHashSalt() */
-    if (EXPAT(SetHashSalt) != NULL) {
-        EXPAT(SetHashSalt)(self->parser,
+    if (EXPAT(st, SetHashSalt) != NULL) {
+        EXPAT(st, SetHashSalt)(self->parser,
                            (unsigned long)_Py_HashSecret.expat.hashsalt);
     }
 
     if (target != Py_None) {
         Py_INCREF(target);
     } else {
-        elementtreestate *st = self->state;
         target = treebuilder_new(st->TreeBuilder_Type, NULL, NULL);
         if (!target) {
             Py_CLEAR(self->entity);
@@ -3713,43 +3711,43 @@ _elementtree_XMLParser___init___impl(XMLParserObject *self, PyObject *target,
     }
 
     /* configure parser */
-    EXPAT(SetUserData)(self->parser, self);
+    EXPAT(st, SetUserData)(self->parser, self);
     if (self->handle_start_ns || self->handle_end_ns)
-        EXPAT(SetNamespaceDeclHandler)(
+        EXPAT(st, SetNamespaceDeclHandler)(
             self->parser,
             (XML_StartNamespaceDeclHandler) expat_start_ns_handler,
             (XML_EndNamespaceDeclHandler) expat_end_ns_handler
             );
-    EXPAT(SetElementHandler)(
+    EXPAT(st, SetElementHandler)(
         self->parser,
         (XML_StartElementHandler) expat_start_handler,
         (XML_EndElementHandler) expat_end_handler
         );
-    EXPAT(SetDefaultHandlerExpand)(
+    EXPAT(st, SetDefaultHandlerExpand)(
         self->parser,
         (XML_DefaultHandler) expat_default_handler
         );
-    EXPAT(SetCharacterDataHandler)(
+    EXPAT(st, SetCharacterDataHandler)(
         self->parser,
         (XML_CharacterDataHandler) expat_data_handler
         );
     if (self->handle_comment)
-        EXPAT(SetCommentHandler)(
+        EXPAT(st, SetCommentHandler)(
             self->parser,
             (XML_CommentHandler) expat_comment_handler
             );
     if (self->handle_pi)
-        EXPAT(SetProcessingInstructionHandler)(
+        EXPAT(st, SetProcessingInstructionHandler)(
             self->parser,
             (XML_ProcessingInstructionHandler) expat_pi_handler
             );
-    EXPAT(SetStartDoctypeDeclHandler)(
+    EXPAT(st, SetStartDoctypeDeclHandler)(
         self->parser,
         (XML_StartDoctypeDeclHandler) expat_start_doctype_handler
         );
-    EXPAT(SetUnknownEncodingHandler)(
+    EXPAT(st, SetUnknownEncodingHandler)(
         self->parser,
-        EXPAT(DefaultUnknownEncodingHandler), NULL
+        EXPAT(st, DefaultUnknownEncodingHandler), NULL
         );
 
     return 0;
@@ -3779,10 +3777,11 @@ xmlparser_gc_traverse(XMLParserObject *self, visitproc visit, void *arg)
 static int
 xmlparser_gc_clear(XMLParserObject *self)
 {
+    elementtreestate *st = self->state;
     if (self->parser != NULL) {
         XML_Parser parser = self->parser;
         self->parser = NULL;
-        EXPAT(ParserFree)(parser);
+        EXPAT(st, ParserFree)(parser);
     }
 
     Py_CLEAR(self->handle_close);
@@ -3830,7 +3829,7 @@ expat_parse(elementtreestate *st, XMLParserObject *self, const char *data,
     int ok;
 
     assert(!PyErr_Occurred());
-    ok = EXPAT(Parse)(self->parser, data, data_len, final);
+    ok = EXPAT(st, Parse)(self->parser, data, data_len, final);
 
     if (PyErr_Occurred())
         return NULL;
@@ -3838,9 +3837,9 @@ expat_parse(elementtreestate *st, XMLParserObject *self, const char *data,
     if (!ok) {
         expat_set_error(
             st,
-            EXPAT(GetErrorCode)(self->parser),
-            EXPAT(GetErrorLineNumber)(self->parser),
-            EXPAT(GetErrorColumnNumber)(self->parser),
+            EXPAT(st, GetErrorCode)(self->parser),
+            EXPAT(st, GetErrorLineNumber)(self->parser),
+            EXPAT(st, GetErrorColumnNumber)(self->parser),
             NULL
             );
         return NULL;
@@ -3911,7 +3910,7 @@ _elementtree_XMLParser_feed(XMLParserObject *self, PyObject *data)
             return NULL;
         }
         /* Explicitly set UTF-8 encoding. Return code ignored. */
-        (void)EXPAT(SetEncoding)(self->parser, "utf-8");
+        (void)EXPAT(st, SetEncoding)(self->parser, "utf-8");
 
         return expat_parse(st, self, data_ptr, (int)data_len, 0);
     }
@@ -4099,27 +4098,27 @@ _elementtree_XMLParser__setevents_impl(XMLParserObject *self,
             Py_XSETREF(target->end_event_obj, Py_NewRef(event_name_obj));
         } else if (strcmp(event_name, "start-ns") == 0) {
             Py_XSETREF(target->start_ns_event_obj, Py_NewRef(event_name_obj));
-            EXPAT(SetNamespaceDeclHandler)(
+            EXPAT(st, SetNamespaceDeclHandler)(
                 self->parser,
                 (XML_StartNamespaceDeclHandler) expat_start_ns_handler,
                 (XML_EndNamespaceDeclHandler) expat_end_ns_handler
                 );
         } else if (strcmp(event_name, "end-ns") == 0) {
             Py_XSETREF(target->end_ns_event_obj, Py_NewRef(event_name_obj));
-            EXPAT(SetNamespaceDeclHandler)(
+            EXPAT(st, SetNamespaceDeclHandler)(
                 self->parser,
                 (XML_StartNamespaceDeclHandler) expat_start_ns_handler,
                 (XML_EndNamespaceDeclHandler) expat_end_ns_handler
                 );
         } else if (strcmp(event_name, "comment") == 0) {
             Py_XSETREF(target->comment_event_obj, Py_NewRef(event_name_obj));
-            EXPAT(SetCommentHandler)(
+            EXPAT(st, SetCommentHandler)(
                 self->parser,
                 (XML_CommentHandler) expat_comment_handler
                 );
         } else if (strcmp(event_name, "pi") == 0) {
             Py_XSETREF(target->pi_event_obj, Py_NewRef(event_name_obj));
-            EXPAT(SetProcessingInstructionHandler)(
+            EXPAT(st, SetProcessingInstructionHandler)(
                 self->parser,
                 (XML_ProcessingInstructionHandler) expat_pi_handler
                 );
@@ -4135,8 +4134,8 @@ _elementtree_XMLParser__setevents_impl(XMLParserObject *self,
 }
 
 static PyMemberDef xmlparser_members[] = {
-    {"entity", T_OBJECT, offsetof(XMLParserObject, entity), READONLY, NULL},
-    {"target", T_OBJECT, offsetof(XMLParserObject, target), READONLY, NULL},
+    {"entity", _Py_T_OBJECT, offsetof(XMLParserObject, entity), Py_READONLY, NULL},
+    {"target", _Py_T_OBJECT, offsetof(XMLParserObject, target), Py_READONLY, NULL},
     {NULL}
 };
 
@@ -4192,7 +4191,7 @@ static PyMethodDef element_methods[] = {
 };
 
 static struct PyMemberDef element_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(ElementObject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(ElementObject, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -4344,14 +4343,14 @@ module_exec(PyObject *m)
         goto error;
 
     /* link against pyexpat */
-    expat_capi = PyCapsule_Import(PyExpat_CAPSULE_NAME, 0);
-    if (expat_capi) {
+    st->expat_capi = PyCapsule_Import(PyExpat_CAPSULE_NAME, 0);
+    if (st->expat_capi) {
         /* check that it's usable */
-        if (strcmp(expat_capi->magic, PyExpat_CAPI_MAGIC) != 0 ||
-            (size_t)expat_capi->size < sizeof(struct PyExpat_CAPI) ||
-            expat_capi->MAJOR_VERSION != XML_MAJOR_VERSION ||
-            expat_capi->MINOR_VERSION != XML_MINOR_VERSION ||
-            expat_capi->MICRO_VERSION != XML_MICRO_VERSION) {
+        if (strcmp(st->expat_capi->magic, PyExpat_CAPI_MAGIC) != 0 ||
+            (size_t)st->expat_capi->size < sizeof(struct PyExpat_CAPI) ||
+            st->expat_capi->MAJOR_VERSION != XML_MAJOR_VERSION ||
+            st->expat_capi->MINOR_VERSION != XML_MINOR_VERSION ||
+            st->expat_capi->MICRO_VERSION != XML_MICRO_VERSION) {
             PyErr_SetString(PyExc_ImportError,
                             "pyexpat version is incompatible");
             goto error;
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index a8001d71223fdc..9ab847165dc097 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -6,7 +6,7 @@
 #include "pycore_object.h"        // _PyObject_GC_TRACK
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
-#include "structmember.h"         // PyMemberDef
+
 
 #include "clinic/_functoolsmodule.c.h"
 /*[clinic input]
@@ -276,7 +276,7 @@ partial_vectorcall(partialobject *pto, PyObject *const *args,
 static void
 partial_setvectorcall(partialobject *pto)
 {
-    if (_PyVectorcall_Function(pto->fn) == NULL) {
+    if (PyVectorcall_Function(pto->fn) == NULL) {
         /* Don't use vectorcall if the underlying function doesn't support it */
         pto->vectorcall = NULL;
     }
@@ -340,18 +340,18 @@ PyDoc_STRVAR(partial_doc,
 
 #define OFF(x) offsetof(partialobject, x)
 static PyMemberDef partial_memberlist[] = {
-    {"func",            T_OBJECT,       OFF(fn),        READONLY,
+    {"func",            _Py_T_OBJECT,       OFF(fn),        Py_READONLY,
      "function object to use in future partial calls"},
-    {"args",            T_OBJECT,       OFF(args),      READONLY,
+    {"args",            _Py_T_OBJECT,       OFF(args),      Py_READONLY,
      "tuple of arguments to future partial calls"},
-    {"keywords",        T_OBJECT,       OFF(kw),        READONLY,
+    {"keywords",        _Py_T_OBJECT,       OFF(kw),        Py_READONLY,
      "dictionary of keyword arguments to future partial calls"},
-    {"__weaklistoffset__", T_PYSSIZET,
-     offsetof(partialobject, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET,
-     offsetof(partialobject, dict), READONLY},
-    {"__vectorcalloffset__", T_PYSSIZET,
-     offsetof(partialobject, vectorcall), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET,
+     offsetof(partialobject, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET,
+     offsetof(partialobject, dict), Py_READONLY},
+    {"__vectorcalloffset__", Py_T_PYSSIZET,
+     offsetof(partialobject, vectorcall), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -540,7 +540,7 @@ keyobject_traverse(keyobject *ko, visitproc visit, void *arg)
 }
 
 static PyMemberDef keyobject_members[] = {
-    {"obj", T_OBJECT,
+    {"obj", _Py_T_OBJECT,
      offsetof(keyobject, object), 0,
      PyDoc_STR("Value wrapped by a key function.")},
     {NULL}
@@ -594,21 +594,15 @@ keyobject_call(keyobject *ko, PyObject *args, PyObject *kwds)
 static PyObject *
 keyobject_richcompare(PyObject *ko, PyObject *other, int op)
 {
-    PyObject *res;
-    PyObject *x;
-    PyObject *y;
-    PyObject *compare;
-    PyObject *answer;
-    PyObject* stack[2];
-
     if (!Py_IS_TYPE(other, Py_TYPE(ko))) {
         PyErr_Format(PyExc_TypeError, "other argument must be K instance");
         return NULL;
     }
-    compare = ((keyobject *) ko)->cmp;
+
+    PyObject *compare = ((keyobject *) ko)->cmp;
     assert(compare != NULL);
-    x = ((keyobject *) ko)->object;
-    y = ((keyobject *) other)->object;
+    PyObject *x = ((keyobject *) ko)->object;
+    PyObject *y = ((keyobject *) other)->object;
     if (!x || !y){
         PyErr_Format(PyExc_AttributeError, "object");
         return NULL;
@@ -617,14 +611,13 @@ keyobject_richcompare(PyObject *ko, PyObject *other, int op)
     /* Call the user's comparison function and translate the 3-way
      * result into true or false (or error).
      */
-    stack[0] = x;
-    stack[1] = y;
-    res = _PyObject_FastCall(compare, stack, 2);
+    PyObject* args[2] = {x, y};
+    PyObject *res = PyObject_Vectorcall(compare, args, 2, NULL);
     if (res == NULL) {
         return NULL;
     }
 
-    answer = PyObject_RichCompare(res, _PyLong_GetZero(), op);
+    PyObject *answer = PyObject_RichCompare(res, _PyLong_GetZero(), op);
     Py_DECREF(res);
     return answer;
 }
@@ -732,7 +725,7 @@ functools_reduce(PyObject *self, PyObject *args)
 }
 
 PyDoc_STRVAR(functools_reduce_doc,
-"reduce(function, iterable[, initial]) -> value\n\
+"reduce(function, iterable[, initial], /) -> value\n\
 \n\
 Apply a function of two arguments cumulatively to the items of a sequence\n\
 or iterable, from left to right, so as to reduce the iterable to a single\n\
@@ -1094,19 +1087,9 @@ bounded_lru_cache_wrapper(lru_cache_object *self, PyObject *args, PyObject *kwds
        The cache dict holds one reference to the link.
        We created one other reference when the link was created.
        The linked list only has borrowed references. */
-    popresult = _PyDict_Pop_KnownHash(self->cache, link->key,
-                                      link->hash, Py_None);
-    if (popresult == Py_None) {
-        /* Getting here means that the user function call or another
-           thread has already removed the old key from the dictionary.
-           This link is now an orphan.  Since we don't want to leave the
-           cache in an inconsistent state, we don't restore the link. */
-        Py_DECREF(popresult);
-        Py_DECREF(link);
-        Py_DECREF(key);
-        return result;
-    }
-    if (popresult == NULL) {
+    int res = _PyDict_Pop_KnownHash((PyDictObject*)self->cache, link->key,
+                                    link->hash, &popresult);
+    if (res < 0) {
         /* An error arose while trying to remove the oldest key (the one
            being evicted) from the cache.  We restore the link to its
            original position as the oldest link.  Then we allow the
@@ -1117,10 +1100,22 @@ bounded_lru_cache_wrapper(lru_cache_object *self, PyObject *args, PyObject *kwds
         Py_DECREF(result);
         return NULL;
     }
+    if (res == 0) {
+        /* Getting here means that the user function call or another
+           thread has already removed the old key from the dictionary.
+           This link is now an orphan.  Since we don't want to leave the
+           cache in an inconsistent state, we don't restore the link. */
+        assert(popresult == NULL);
+        Py_DECREF(link);
+        Py_DECREF(key);
+        return result;
+    }
+
     /* Keep a reference to the old key and old result to prevent their
        ref counts from going to zero during the update. That will
        prevent potentially arbitrary object clean-up code (i.e. __del__)
        from running while we're still adjusting the links. */
+    assert(popresult != NULL);
     oldkey = link->key;
     oldresult = link->result;
 
@@ -1279,7 +1274,11 @@ lru_cache_dealloc(lru_cache_object *obj)
 static PyObject *
 lru_cache_call(lru_cache_object *self, PyObject *args, PyObject *kwds)
 {
-    return self->wrapper(self, args, kwds);
+    PyObject *result;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = self->wrapper(self, args, kwds);
+    Py_END_CRITICAL_SECTION();
+    return result;
 }
 
 static PyObject *
@@ -1292,6 +1291,7 @@ lru_cache_descr_get(PyObject *self, PyObject *obj, PyObject *type)
 }
 
 /*[clinic input]
+@critical_section
 _functools._lru_cache_wrapper.cache_info
 
 Report cache statistics
@@ -1299,7 +1299,7 @@ Report cache statistics
 
 static PyObject *
 _functools__lru_cache_wrapper_cache_info_impl(PyObject *self)
-/*[clinic end generated code: output=cc796a0b06dbd717 input=f05e5b6ebfe38645]*/
+/*[clinic end generated code: output=cc796a0b06dbd717 input=00e1acb31aa21ecc]*/
 {
     lru_cache_object *_self = (lru_cache_object *) self;
     if (_self->maxsize == -1) {
@@ -1313,6 +1313,7 @@ _functools__lru_cache_wrapper_cache_info_impl(PyObject *self)
 }
 
 /*[clinic input]
+@critical_section
 _functools._lru_cache_wrapper.cache_clear
 
 Clear the cache and cache statistics
@@ -1320,7 +1321,7 @@ Clear the cache and cache statistics
 
 static PyObject *
 _functools__lru_cache_wrapper_cache_clear_impl(PyObject *self)
-/*[clinic end generated code: output=58423b35efc3e381 input=6ca59dba09b12584]*/
+/*[clinic end generated code: output=58423b35efc3e381 input=dfa33acbecf8b4b2]*/
 {
     lru_cache_object *_self = (lru_cache_object *) self;
     lru_list_elem *list = lru_cache_unlink_list(_self);
@@ -1401,10 +1402,10 @@ static PyGetSetDef lru_cache_getsetlist[] = {
 };
 
 static PyMemberDef lru_cache_memberlist[] = {
-    {"__dictoffset__", T_PYSSIZET,
-     offsetof(lru_cache_object, dict), READONLY},
-    {"__weaklistoffset__", T_PYSSIZET,
-     offsetof(lru_cache_object, weakreflist), READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET,
+     offsetof(lru_cache_object, dict), Py_READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET,
+     offsetof(lru_cache_object, weakreflist), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
diff --git a/Modules/_gdbmmodule.c b/Modules/_gdbmmodule.c
index 4dbb5741b2ede8..db868c18160fda 100644
--- a/Modules/_gdbmmodule.c
+++ b/Modules/_gdbmmodule.c
@@ -1,9 +1,12 @@
-
 /* GDBM module using dictionary interface */
 /* Author: Anthony Baxter, after dbmmodule.c */
 /* Doc strings: Mitch Chapman */
 
-#define PY_SSIZE_T_CLEAN
+// clinic/_gdbmmodule.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 #include "gdbm.h"
 
@@ -562,6 +565,37 @@ _gdbm_gdbm_sync_impl(gdbmobject *self, PyTypeObject *cls)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_gdbm.gdbm.clear
+    cls: defining_class
+    /
+Remove all items from the database.
+
+[clinic start generated code]*/
+
+static PyObject *
+_gdbm_gdbm_clear_impl(gdbmobject *self, PyTypeObject *cls)
+/*[clinic end generated code: output=673577c573318661 input=34136d52fcdd4210]*/
+{
+    _gdbm_state *state = PyType_GetModuleState(cls);
+    assert(state != NULL);
+    check_gdbmobject_open(self, state->gdbm_error);
+    datum key;
+    // Invalidate cache
+    self->di_size = -1;
+    while (1) {
+        key = gdbm_firstkey(self->di_dbm);
+        if (key.dptr == NULL) {
+            break;
+        }
+        if (gdbm_delete(self->di_dbm, key) < 0) {
+            PyErr_SetString(state->gdbm_error, "cannot delete item from database");
+            return NULL;
+        }
+    }
+    Py_RETURN_NONE;
+}
+
 static PyObject *
 gdbm__enter__(PyObject *self, PyObject *args)
 {
@@ -583,6 +617,7 @@ static PyMethodDef gdbm_methods[] = {
     _GDBM_GDBM_SYNC_METHODDEF
     _GDBM_GDBM_GET_METHODDEF
     _GDBM_GDBM_SETDEFAULT_METHODDEF
+    _GDBM_GDBM_CLEAR_METHODDEF
     {"__enter__", gdbm__enter__, METH_NOARGS, NULL},
     {"__exit__",  gdbm__exit__, METH_VARARGS, NULL},
     {NULL,              NULL}           /* sentinel */
@@ -756,11 +791,7 @@ _gdbm_exec(PyObject *module)
     defined(GDBM_VERSION_PATCH)
     PyObject *obj = Py_BuildValue("iii", GDBM_VERSION_MAJOR,
                                   GDBM_VERSION_MINOR, GDBM_VERSION_PATCH);
-    if (obj == NULL) {
-        return -1;
-    }
-    if (PyModule_AddObject(module, "_GDBM_VERSION", obj) < 0) {
-        Py_DECREF(obj);
+    if (PyModule_Add(module, "_GDBM_VERSION", obj) < 0) {
         return -1;
     }
 #endif
diff --git a/Modules/_hacl/Hacl_Hash_MD5.c b/Modules/_hacl/Hacl_Hash_MD5.c
index 2c613066d9f682..222ac824f01961 100644
--- a/Modules/_hacl/Hacl_Hash_MD5.c
+++ b/Modules/_hacl/Hacl_Hash_MD5.c
@@ -1227,14 +1227,14 @@ void Hacl_Streaming_MD5_legacy_init(Hacl_Streaming_MD_state_32 *s)
 /**
 0 = success, 1 = max length exceeded
 */
-uint32_t
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_MD5_legacy_update(Hacl_Streaming_MD_state_32 *p, uint8_t *data, uint32_t len)
 {
   Hacl_Streaming_MD_state_32 s = *p;
   uint64_t total_len = s.total_len;
   if ((uint64_t)len > (uint64_t)2305843009213693951U - total_len)
   {
-    return (uint32_t)1U;
+    return Hacl_Streaming_Types_MaximumLengthExceeded;
   }
   uint32_t sz;
   if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
@@ -1399,7 +1399,7 @@ Hacl_Streaming_MD5_legacy_update(Hacl_Streaming_MD_state_32 *p, uint8_t *data, u
         }
       );
   }
-  return (uint32_t)0U;
+  return Hacl_Streaming_Types_Success;
 }
 
 void Hacl_Streaming_MD5_legacy_finish(Hacl_Streaming_MD_state_32 *p, uint8_t *dst)
diff --git a/Modules/_hacl/Hacl_Hash_MD5.h b/Modules/_hacl/Hacl_Hash_MD5.h
index 015e3668751b75..13c19fd40f4d12 100644
--- a/Modules/_hacl/Hacl_Hash_MD5.h
+++ b/Modules/_hacl/Hacl_Hash_MD5.h
@@ -46,7 +46,7 @@ void Hacl_Streaming_MD5_legacy_init(Hacl_Streaming_MD_state_32 *s);
 /**
 0 = success, 1 = max length exceeded
 */
-uint32_t
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_MD5_legacy_update(Hacl_Streaming_MD_state_32 *p, uint8_t *data, uint32_t len);
 
 void Hacl_Streaming_MD5_legacy_finish(Hacl_Streaming_MD_state_32 *p, uint8_t *dst);
diff --git a/Modules/_hacl/Hacl_Hash_SHA1.c b/Modules/_hacl/Hacl_Hash_SHA1.c
index e155e338271c56..5ecb3c0b3a56e0 100644
--- a/Modules/_hacl/Hacl_Hash_SHA1.c
+++ b/Modules/_hacl/Hacl_Hash_SHA1.c
@@ -263,14 +263,14 @@ void Hacl_Streaming_SHA1_legacy_init(Hacl_Streaming_MD_state_32 *s)
 /**
 0 = success, 1 = max length exceeded
 */
-uint32_t
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_SHA1_legacy_update(Hacl_Streaming_MD_state_32 *p, uint8_t *data, uint32_t len)
 {
   Hacl_Streaming_MD_state_32 s = *p;
   uint64_t total_len = s.total_len;
   if ((uint64_t)len > (uint64_t)2305843009213693951U - total_len)
   {
-    return (uint32_t)1U;
+    return Hacl_Streaming_Types_MaximumLengthExceeded;
   }
   uint32_t sz;
   if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
@@ -435,7 +435,7 @@ Hacl_Streaming_SHA1_legacy_update(Hacl_Streaming_MD_state_32 *p, uint8_t *data,
         }
       );
   }
-  return (uint32_t)0U;
+  return Hacl_Streaming_Types_Success;
 }
 
 void Hacl_Streaming_SHA1_legacy_finish(Hacl_Streaming_MD_state_32 *p, uint8_t *dst)
diff --git a/Modules/_hacl/Hacl_Hash_SHA1.h b/Modules/_hacl/Hacl_Hash_SHA1.h
index 5e2ae8e713292d..dc50aa6f6d3902 100644
--- a/Modules/_hacl/Hacl_Hash_SHA1.h
+++ b/Modules/_hacl/Hacl_Hash_SHA1.h
@@ -46,7 +46,7 @@ void Hacl_Streaming_SHA1_legacy_init(Hacl_Streaming_MD_state_32 *s);
 /**
 0 = success, 1 = max length exceeded
 */
-uint32_t
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_SHA1_legacy_update(Hacl_Streaming_MD_state_32 *p, uint8_t *data, uint32_t len);
 
 void Hacl_Streaming_SHA1_legacy_finish(Hacl_Streaming_MD_state_32 *p, uint8_t *dst);
diff --git a/Modules/_hacl/Hacl_Hash_SHA2.c b/Modules/_hacl/Hacl_Hash_SHA2.c
new file mode 100644
index 00000000000000..08e3f7edbf4ede
--- /dev/null
+++ b/Modules/_hacl/Hacl_Hash_SHA2.c
@@ -0,0 +1,1345 @@
+/* MIT License
+ *
+ * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
+ * Copyright (c) 2022-2023 HACL* Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#include "internal/Hacl_Hash_SHA2.h"
+
+
+
+void Hacl_SHA2_Scalar32_sha256_init(uint32_t *hash)
+{
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    uint32_t *os = hash;
+    uint32_t x = Hacl_Impl_SHA2_Generic_h256[i];
+    os[i] = x;);
+}
+
+static inline void sha256_update(uint8_t *b, uint32_t *hash)
+{
+  uint32_t hash_old[8U] = { 0U };
+  uint32_t ws[16U] = { 0U };
+  memcpy(hash_old, hash, (uint32_t)8U * sizeof (uint32_t));
+  uint8_t *b10 = b;
+  uint32_t u = load32_be(b10);
+  ws[0U] = u;
+  uint32_t u0 = load32_be(b10 + (uint32_t)4U);
+  ws[1U] = u0;
+  uint32_t u1 = load32_be(b10 + (uint32_t)8U);
+  ws[2U] = u1;
+  uint32_t u2 = load32_be(b10 + (uint32_t)12U);
+  ws[3U] = u2;
+  uint32_t u3 = load32_be(b10 + (uint32_t)16U);
+  ws[4U] = u3;
+  uint32_t u4 = load32_be(b10 + (uint32_t)20U);
+  ws[5U] = u4;
+  uint32_t u5 = load32_be(b10 + (uint32_t)24U);
+  ws[6U] = u5;
+  uint32_t u6 = load32_be(b10 + (uint32_t)28U);
+  ws[7U] = u6;
+  uint32_t u7 = load32_be(b10 + (uint32_t)32U);
+  ws[8U] = u7;
+  uint32_t u8 = load32_be(b10 + (uint32_t)36U);
+  ws[9U] = u8;
+  uint32_t u9 = load32_be(b10 + (uint32_t)40U);
+  ws[10U] = u9;
+  uint32_t u10 = load32_be(b10 + (uint32_t)44U);
+  ws[11U] = u10;
+  uint32_t u11 = load32_be(b10 + (uint32_t)48U);
+  ws[12U] = u11;
+  uint32_t u12 = load32_be(b10 + (uint32_t)52U);
+  ws[13U] = u12;
+  uint32_t u13 = load32_be(b10 + (uint32_t)56U);
+  ws[14U] = u13;
+  uint32_t u14 = load32_be(b10 + (uint32_t)60U);
+  ws[15U] = u14;
+  KRML_MAYBE_FOR4(i0,
+    (uint32_t)0U,
+    (uint32_t)4U,
+    (uint32_t)1U,
+    KRML_MAYBE_FOR16(i,
+      (uint32_t)0U,
+      (uint32_t)16U,
+      (uint32_t)1U,
+      uint32_t k_t = Hacl_Impl_SHA2_Generic_k224_256[(uint32_t)16U * i0 + i];
+      uint32_t ws_t = ws[i];
+      uint32_t a0 = hash[0U];
+      uint32_t b0 = hash[1U];
+      uint32_t c0 = hash[2U];
+      uint32_t d0 = hash[3U];
+      uint32_t e0 = hash[4U];
+      uint32_t f0 = hash[5U];
+      uint32_t g0 = hash[6U];
+      uint32_t h02 = hash[7U];
+      uint32_t k_e_t = k_t;
+      uint32_t
+      t1 =
+        h02
+        +
+          ((e0 << (uint32_t)26U | e0 >> (uint32_t)6U)
+          ^
+            ((e0 << (uint32_t)21U | e0 >> (uint32_t)11U)
+            ^ (e0 << (uint32_t)7U | e0 >> (uint32_t)25U)))
+        + ((e0 & f0) ^ (~e0 & g0))
+        + k_e_t
+        + ws_t;
+      uint32_t
+      t2 =
+        ((a0 << (uint32_t)30U | a0 >> (uint32_t)2U)
+        ^
+          ((a0 << (uint32_t)19U | a0 >> (uint32_t)13U)
+          ^ (a0 << (uint32_t)10U | a0 >> (uint32_t)22U)))
+        + ((a0 & b0) ^ ((a0 & c0) ^ (b0 & c0)));
+      uint32_t a1 = t1 + t2;
+      uint32_t b1 = a0;
+      uint32_t c1 = b0;
+      uint32_t d1 = c0;
+      uint32_t e1 = d0 + t1;
+      uint32_t f1 = e0;
+      uint32_t g1 = f0;
+      uint32_t h12 = g0;
+      hash[0U] = a1;
+      hash[1U] = b1;
+      hash[2U] = c1;
+      hash[3U] = d1;
+      hash[4U] = e1;
+      hash[5U] = f1;
+      hash[6U] = g1;
+      hash[7U] = h12;);
+    if (i0 < (uint32_t)3U)
+    {
+      KRML_MAYBE_FOR16(i,
+        (uint32_t)0U,
+        (uint32_t)16U,
+        (uint32_t)1U,
+        uint32_t t16 = ws[i];
+        uint32_t t15 = ws[(i + (uint32_t)1U) % (uint32_t)16U];
+        uint32_t t7 = ws[(i + (uint32_t)9U) % (uint32_t)16U];
+        uint32_t t2 = ws[(i + (uint32_t)14U) % (uint32_t)16U];
+        uint32_t
+        s1 =
+          (t2 << (uint32_t)15U | t2 >> (uint32_t)17U)
+          ^ ((t2 << (uint32_t)13U | t2 >> (uint32_t)19U) ^ t2 >> (uint32_t)10U);
+        uint32_t
+        s0 =
+          (t15 << (uint32_t)25U | t15 >> (uint32_t)7U)
+          ^ ((t15 << (uint32_t)14U | t15 >> (uint32_t)18U) ^ t15 >> (uint32_t)3U);
+        ws[i] = s1 + t7 + s0 + t16;);
+    });
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    uint32_t *os = hash;
+    uint32_t x = hash[i] + hash_old[i];
+    os[i] = x;);
+}
+
+void Hacl_SHA2_Scalar32_sha256_update_nblocks(uint32_t len, uint8_t *b, uint32_t *st)
+{
+  uint32_t blocks = len / (uint32_t)64U;
+  for (uint32_t i = (uint32_t)0U; i < blocks; i++)
+  {
+    uint8_t *b0 = b;
+    uint8_t *mb = b0 + i * (uint32_t)64U;
+    sha256_update(mb, st);
+  }
+}
+
+void
+Hacl_SHA2_Scalar32_sha256_update_last(
+  uint64_t totlen,
+  uint32_t len,
+  uint8_t *b,
+  uint32_t *hash
+)
+{
+  uint32_t blocks;
+  if (len + (uint32_t)8U + (uint32_t)1U <= (uint32_t)64U)
+  {
+    blocks = (uint32_t)1U;
+  }
+  else
+  {
+    blocks = (uint32_t)2U;
+  }
+  uint32_t fin = blocks * (uint32_t)64U;
+  uint8_t last[128U] = { 0U };
+  uint8_t totlen_buf[8U] = { 0U };
+  uint64_t total_len_bits = totlen << (uint32_t)3U;
+  store64_be(totlen_buf, total_len_bits);
+  uint8_t *b0 = b;
+  memcpy(last, b0, len * sizeof (uint8_t));
+  last[len] = (uint8_t)0x80U;
+  memcpy(last + fin - (uint32_t)8U, totlen_buf, (uint32_t)8U * sizeof (uint8_t));
+  uint8_t *last00 = last;
+  uint8_t *last10 = last + (uint32_t)64U;
+  uint8_t *l0 = last00;
+  uint8_t *l1 = last10;
+  uint8_t *lb0 = l0;
+  uint8_t *lb1 = l1;
+  uint8_t *last0 = lb0;
+  uint8_t *last1 = lb1;
+  sha256_update(last0, hash);
+  if (blocks > (uint32_t)1U)
+  {
+    sha256_update(last1, hash);
+    return;
+  }
+}
+
+void Hacl_SHA2_Scalar32_sha256_finish(uint32_t *st, uint8_t *h)
+{
+  uint8_t hbuf[32U] = { 0U };
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    store32_be(hbuf + i * (uint32_t)4U, st[i]););
+  memcpy(h, hbuf, (uint32_t)32U * sizeof (uint8_t));
+}
+
+void Hacl_SHA2_Scalar32_sha224_init(uint32_t *hash)
+{
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    uint32_t *os = hash;
+    uint32_t x = Hacl_Impl_SHA2_Generic_h224[i];
+    os[i] = x;);
+}
+
+static inline void sha224_update_nblocks(uint32_t len, uint8_t *b, uint32_t *st)
+{
+  Hacl_SHA2_Scalar32_sha256_update_nblocks(len, b, st);
+}
+
+void
+Hacl_SHA2_Scalar32_sha224_update_last(uint64_t totlen, uint32_t len, uint8_t *b, uint32_t *st)
+{
+  Hacl_SHA2_Scalar32_sha256_update_last(totlen, len, b, st);
+}
+
+void Hacl_SHA2_Scalar32_sha224_finish(uint32_t *st, uint8_t *h)
+{
+  uint8_t hbuf[32U] = { 0U };
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    store32_be(hbuf + i * (uint32_t)4U, st[i]););
+  memcpy(h, hbuf, (uint32_t)28U * sizeof (uint8_t));
+}
+
+void Hacl_SHA2_Scalar32_sha512_init(uint64_t *hash)
+{
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    uint64_t *os = hash;
+    uint64_t x = Hacl_Impl_SHA2_Generic_h512[i];
+    os[i] = x;);
+}
+
+static inline void sha512_update(uint8_t *b, uint64_t *hash)
+{
+  uint64_t hash_old[8U] = { 0U };
+  uint64_t ws[16U] = { 0U };
+  memcpy(hash_old, hash, (uint32_t)8U * sizeof (uint64_t));
+  uint8_t *b10 = b;
+  uint64_t u = load64_be(b10);
+  ws[0U] = u;
+  uint64_t u0 = load64_be(b10 + (uint32_t)8U);
+  ws[1U] = u0;
+  uint64_t u1 = load64_be(b10 + (uint32_t)16U);
+  ws[2U] = u1;
+  uint64_t u2 = load64_be(b10 + (uint32_t)24U);
+  ws[3U] = u2;
+  uint64_t u3 = load64_be(b10 + (uint32_t)32U);
+  ws[4U] = u3;
+  uint64_t u4 = load64_be(b10 + (uint32_t)40U);
+  ws[5U] = u4;
+  uint64_t u5 = load64_be(b10 + (uint32_t)48U);
+  ws[6U] = u5;
+  uint64_t u6 = load64_be(b10 + (uint32_t)56U);
+  ws[7U] = u6;
+  uint64_t u7 = load64_be(b10 + (uint32_t)64U);
+  ws[8U] = u7;
+  uint64_t u8 = load64_be(b10 + (uint32_t)72U);
+  ws[9U] = u8;
+  uint64_t u9 = load64_be(b10 + (uint32_t)80U);
+  ws[10U] = u9;
+  uint64_t u10 = load64_be(b10 + (uint32_t)88U);
+  ws[11U] = u10;
+  uint64_t u11 = load64_be(b10 + (uint32_t)96U);
+  ws[12U] = u11;
+  uint64_t u12 = load64_be(b10 + (uint32_t)104U);
+  ws[13U] = u12;
+  uint64_t u13 = load64_be(b10 + (uint32_t)112U);
+  ws[14U] = u13;
+  uint64_t u14 = load64_be(b10 + (uint32_t)120U);
+  ws[15U] = u14;
+  KRML_MAYBE_FOR5(i0,
+    (uint32_t)0U,
+    (uint32_t)5U,
+    (uint32_t)1U,
+    KRML_MAYBE_FOR16(i,
+      (uint32_t)0U,
+      (uint32_t)16U,
+      (uint32_t)1U,
+      uint64_t k_t = Hacl_Impl_SHA2_Generic_k384_512[(uint32_t)16U * i0 + i];
+      uint64_t ws_t = ws[i];
+      uint64_t a0 = hash[0U];
+      uint64_t b0 = hash[1U];
+      uint64_t c0 = hash[2U];
+      uint64_t d0 = hash[3U];
+      uint64_t e0 = hash[4U];
+      uint64_t f0 = hash[5U];
+      uint64_t g0 = hash[6U];
+      uint64_t h02 = hash[7U];
+      uint64_t k_e_t = k_t;
+      uint64_t
+      t1 =
+        h02
+        +
+          ((e0 << (uint32_t)50U | e0 >> (uint32_t)14U)
+          ^
+            ((e0 << (uint32_t)46U | e0 >> (uint32_t)18U)
+            ^ (e0 << (uint32_t)23U | e0 >> (uint32_t)41U)))
+        + ((e0 & f0) ^ (~e0 & g0))
+        + k_e_t
+        + ws_t;
+      uint64_t
+      t2 =
+        ((a0 << (uint32_t)36U | a0 >> (uint32_t)28U)
+        ^
+          ((a0 << (uint32_t)30U | a0 >> (uint32_t)34U)
+          ^ (a0 << (uint32_t)25U | a0 >> (uint32_t)39U)))
+        + ((a0 & b0) ^ ((a0 & c0) ^ (b0 & c0)));
+      uint64_t a1 = t1 + t2;
+      uint64_t b1 = a0;
+      uint64_t c1 = b0;
+      uint64_t d1 = c0;
+      uint64_t e1 = d0 + t1;
+      uint64_t f1 = e0;
+      uint64_t g1 = f0;
+      uint64_t h12 = g0;
+      hash[0U] = a1;
+      hash[1U] = b1;
+      hash[2U] = c1;
+      hash[3U] = d1;
+      hash[4U] = e1;
+      hash[5U] = f1;
+      hash[6U] = g1;
+      hash[7U] = h12;);
+    if (i0 < (uint32_t)4U)
+    {
+      KRML_MAYBE_FOR16(i,
+        (uint32_t)0U,
+        (uint32_t)16U,
+        (uint32_t)1U,
+        uint64_t t16 = ws[i];
+        uint64_t t15 = ws[(i + (uint32_t)1U) % (uint32_t)16U];
+        uint64_t t7 = ws[(i + (uint32_t)9U) % (uint32_t)16U];
+        uint64_t t2 = ws[(i + (uint32_t)14U) % (uint32_t)16U];
+        uint64_t
+        s1 =
+          (t2 << (uint32_t)45U | t2 >> (uint32_t)19U)
+          ^ ((t2 << (uint32_t)3U | t2 >> (uint32_t)61U) ^ t2 >> (uint32_t)6U);
+        uint64_t
+        s0 =
+          (t15 << (uint32_t)63U | t15 >> (uint32_t)1U)
+          ^ ((t15 << (uint32_t)56U | t15 >> (uint32_t)8U) ^ t15 >> (uint32_t)7U);
+        ws[i] = s1 + t7 + s0 + t16;);
+    });
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    uint64_t *os = hash;
+    uint64_t x = hash[i] + hash_old[i];
+    os[i] = x;);
+}
+
+void Hacl_SHA2_Scalar32_sha512_update_nblocks(uint32_t len, uint8_t *b, uint64_t *st)
+{
+  uint32_t blocks = len / (uint32_t)128U;
+  for (uint32_t i = (uint32_t)0U; i < blocks; i++)
+  {
+    uint8_t *b0 = b;
+    uint8_t *mb = b0 + i * (uint32_t)128U;
+    sha512_update(mb, st);
+  }
+}
+
+void
+Hacl_SHA2_Scalar32_sha512_update_last(
+  FStar_UInt128_uint128 totlen,
+  uint32_t len,
+  uint8_t *b,
+  uint64_t *hash
+)
+{
+  uint32_t blocks;
+  if (len + (uint32_t)16U + (uint32_t)1U <= (uint32_t)128U)
+  {
+    blocks = (uint32_t)1U;
+  }
+  else
+  {
+    blocks = (uint32_t)2U;
+  }
+  uint32_t fin = blocks * (uint32_t)128U;
+  uint8_t last[256U] = { 0U };
+  uint8_t totlen_buf[16U] = { 0U };
+  FStar_UInt128_uint128 total_len_bits = FStar_UInt128_shift_left(totlen, (uint32_t)3U);
+  store128_be(totlen_buf, total_len_bits);
+  uint8_t *b0 = b;
+  memcpy(last, b0, len * sizeof (uint8_t));
+  last[len] = (uint8_t)0x80U;
+  memcpy(last + fin - (uint32_t)16U, totlen_buf, (uint32_t)16U * sizeof (uint8_t));
+  uint8_t *last00 = last;
+  uint8_t *last10 = last + (uint32_t)128U;
+  uint8_t *l0 = last00;
+  uint8_t *l1 = last10;
+  uint8_t *lb0 = l0;
+  uint8_t *lb1 = l1;
+  uint8_t *last0 = lb0;
+  uint8_t *last1 = lb1;
+  sha512_update(last0, hash);
+  if (blocks > (uint32_t)1U)
+  {
+    sha512_update(last1, hash);
+    return;
+  }
+}
+
+void Hacl_SHA2_Scalar32_sha512_finish(uint64_t *st, uint8_t *h)
+{
+  uint8_t hbuf[64U] = { 0U };
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    store64_be(hbuf + i * (uint32_t)8U, st[i]););
+  memcpy(h, hbuf, (uint32_t)64U * sizeof (uint8_t));
+}
+
+void Hacl_SHA2_Scalar32_sha384_init(uint64_t *hash)
+{
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    uint64_t *os = hash;
+    uint64_t x = Hacl_Impl_SHA2_Generic_h384[i];
+    os[i] = x;);
+}
+
+void Hacl_SHA2_Scalar32_sha384_update_nblocks(uint32_t len, uint8_t *b, uint64_t *st)
+{
+  Hacl_SHA2_Scalar32_sha512_update_nblocks(len, b, st);
+}
+
+void
+Hacl_SHA2_Scalar32_sha384_update_last(
+  FStar_UInt128_uint128 totlen,
+  uint32_t len,
+  uint8_t *b,
+  uint64_t *st
+)
+{
+  Hacl_SHA2_Scalar32_sha512_update_last(totlen, len, b, st);
+}
+
+void Hacl_SHA2_Scalar32_sha384_finish(uint64_t *st, uint8_t *h)
+{
+  uint8_t hbuf[64U] = { 0U };
+  KRML_MAYBE_FOR8(i,
+    (uint32_t)0U,
+    (uint32_t)8U,
+    (uint32_t)1U,
+    store64_be(hbuf + i * (uint32_t)8U, st[i]););
+  memcpy(h, hbuf, (uint32_t)48U * sizeof (uint8_t));
+}
+
+/**
+Allocate initial state for the SHA2_256 hash. The state is to be freed by
+calling `free_256`.
+*/
+Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_256(void)
+{
+  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
+  uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint32_t));
+  Hacl_Streaming_MD_state_32
+  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  Hacl_Streaming_MD_state_32
+  *p = (Hacl_Streaming_MD_state_32 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_32));
+  p[0U] = s;
+  Hacl_SHA2_Scalar32_sha256_init(block_state);
+  return p;
+}
+
+/**
+Copies the state passed as argument into a newly allocated state (deep copy).
+The state is to be freed by calling `free_256`. Cloning the state this way is
+useful, for instance, if your control-flow diverges and you need to feed
+more (different) data into the hash in each branch.
+*/
+Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_copy_256(Hacl_Streaming_MD_state_32 *s0)
+{
+  Hacl_Streaming_MD_state_32 scrut = *s0;
+  uint32_t *block_state0 = scrut.block_state;
+  uint8_t *buf0 = scrut.buf;
+  uint64_t total_len0 = scrut.total_len;
+  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
+  memcpy(buf, buf0, (uint32_t)64U * sizeof (uint8_t));
+  uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint32_t));
+  memcpy(block_state, block_state0, (uint32_t)8U * sizeof (uint32_t));
+  Hacl_Streaming_MD_state_32
+  s = { .block_state = block_state, .buf = buf, .total_len = total_len0 };
+  Hacl_Streaming_MD_state_32
+  *p = (Hacl_Streaming_MD_state_32 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_32));
+  p[0U] = s;
+  return p;
+}
+
+/**
+Reset an existing state to the initial hash state with empty data.
+*/
+void Hacl_Streaming_SHA2_init_256(Hacl_Streaming_MD_state_32 *s)
+{
+  Hacl_Streaming_MD_state_32 scrut = *s;
+  uint8_t *buf = scrut.buf;
+  uint32_t *block_state = scrut.block_state;
+  Hacl_SHA2_Scalar32_sha256_init(block_state);
+  Hacl_Streaming_MD_state_32
+  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  s[0U] = tmp;
+}
+
+static inline Hacl_Streaming_Types_error_code
+update_224_256(Hacl_Streaming_MD_state_32 *p, uint8_t *data, uint32_t len)
+{
+  Hacl_Streaming_MD_state_32 s = *p;
+  uint64_t total_len = s.total_len;
+  if ((uint64_t)len > (uint64_t)2305843009213693951U - total_len)
+  {
+    return Hacl_Streaming_Types_MaximumLengthExceeded;
+  }
+  uint32_t sz;
+  if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
+  {
+    sz = (uint32_t)64U;
+  }
+  else
+  {
+    sz = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
+  }
+  if (len <= (uint32_t)64U - sz)
+  {
+    Hacl_Streaming_MD_state_32 s1 = *p;
+    uint32_t *block_state1 = s1.block_state;
+    uint8_t *buf = s1.buf;
+    uint64_t total_len1 = s1.total_len;
+    uint32_t sz1;
+    if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
+    {
+      sz1 = (uint32_t)64U;
+    }
+    else
+    {
+      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
+    }
+    uint8_t *buf2 = buf + sz1;
+    memcpy(buf2, data, len * sizeof (uint8_t));
+    uint64_t total_len2 = total_len1 + (uint64_t)len;
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_32){
+          .block_state = block_state1,
+          .buf = buf,
+          .total_len = total_len2
+        }
+      );
+  }
+  else if (sz == (uint32_t)0U)
+  {
+    Hacl_Streaming_MD_state_32 s1 = *p;
+    uint32_t *block_state1 = s1.block_state;
+    uint8_t *buf = s1.buf;
+    uint64_t total_len1 = s1.total_len;
+    uint32_t sz1;
+    if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
+    {
+      sz1 = (uint32_t)64U;
+    }
+    else
+    {
+      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
+    }
+    if (!(sz1 == (uint32_t)0U))
+    {
+      Hacl_SHA2_Scalar32_sha256_update_nblocks((uint32_t)64U, buf, block_state1);
+    }
+    uint32_t ite;
+    if ((uint64_t)len % (uint64_t)(uint32_t)64U == (uint64_t)0U && (uint64_t)len > (uint64_t)0U)
+    {
+      ite = (uint32_t)64U;
+    }
+    else
+    {
+      ite = (uint32_t)((uint64_t)len % (uint64_t)(uint32_t)64U);
+    }
+    uint32_t n_blocks = (len - ite) / (uint32_t)64U;
+    uint32_t data1_len = n_blocks * (uint32_t)64U;
+    uint32_t data2_len = len - data1_len;
+    uint8_t *data1 = data;
+    uint8_t *data2 = data + data1_len;
+    Hacl_SHA2_Scalar32_sha256_update_nblocks(data1_len / (uint32_t)64U * (uint32_t)64U,
+      data1,
+      block_state1);
+    uint8_t *dst = buf;
+    memcpy(dst, data2, data2_len * sizeof (uint8_t));
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_32){
+          .block_state = block_state1,
+          .buf = buf,
+          .total_len = total_len1 + (uint64_t)len
+        }
+      );
+  }
+  else
+  {
+    uint32_t diff = (uint32_t)64U - sz;
+    uint8_t *data1 = data;
+    uint8_t *data2 = data + diff;
+    Hacl_Streaming_MD_state_32 s1 = *p;
+    uint32_t *block_state10 = s1.block_state;
+    uint8_t *buf0 = s1.buf;
+    uint64_t total_len10 = s1.total_len;
+    uint32_t sz10;
+    if (total_len10 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len10 > (uint64_t)0U)
+    {
+      sz10 = (uint32_t)64U;
+    }
+    else
+    {
+      sz10 = (uint32_t)(total_len10 % (uint64_t)(uint32_t)64U);
+    }
+    uint8_t *buf2 = buf0 + sz10;
+    memcpy(buf2, data1, diff * sizeof (uint8_t));
+    uint64_t total_len2 = total_len10 + (uint64_t)diff;
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_32){
+          .block_state = block_state10,
+          .buf = buf0,
+          .total_len = total_len2
+        }
+      );
+    Hacl_Streaming_MD_state_32 s10 = *p;
+    uint32_t *block_state1 = s10.block_state;
+    uint8_t *buf = s10.buf;
+    uint64_t total_len1 = s10.total_len;
+    uint32_t sz1;
+    if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
+    {
+      sz1 = (uint32_t)64U;
+    }
+    else
+    {
+      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
+    }
+    if (!(sz1 == (uint32_t)0U))
+    {
+      Hacl_SHA2_Scalar32_sha256_update_nblocks((uint32_t)64U, buf, block_state1);
+    }
+    uint32_t ite;
+    if
+    (
+      (uint64_t)(len - diff)
+      % (uint64_t)(uint32_t)64U
+      == (uint64_t)0U
+      && (uint64_t)(len - diff) > (uint64_t)0U
+    )
+    {
+      ite = (uint32_t)64U;
+    }
+    else
+    {
+      ite = (uint32_t)((uint64_t)(len - diff) % (uint64_t)(uint32_t)64U);
+    }
+    uint32_t n_blocks = (len - diff - ite) / (uint32_t)64U;
+    uint32_t data1_len = n_blocks * (uint32_t)64U;
+    uint32_t data2_len = len - diff - data1_len;
+    uint8_t *data11 = data2;
+    uint8_t *data21 = data2 + data1_len;
+    Hacl_SHA2_Scalar32_sha256_update_nblocks(data1_len / (uint32_t)64U * (uint32_t)64U,
+      data11,
+      block_state1);
+    uint8_t *dst = buf;
+    memcpy(dst, data21, data2_len * sizeof (uint8_t));
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_32){
+          .block_state = block_state1,
+          .buf = buf,
+          .total_len = total_len1 + (uint64_t)(len - diff)
+        }
+      );
+  }
+  return Hacl_Streaming_Types_Success;
+}
+
+/**
+Feed an arbitrary amount of data into the hash. This function returns 0 for
+success, or 1 if the combined length of all of the data passed to `update_256`
+(since the last call to `init_256`) exceeds 2^61-1 bytes.
+
+This function is identical to the update function for SHA2_224.
+*/
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_256(
+  Hacl_Streaming_MD_state_32 *p,
+  uint8_t *input,
+  uint32_t input_len
+)
+{
+  return update_224_256(p, input, input_len);
+}
+
+/**
+Write the resulting hash into `dst`, an array of 32 bytes. The state remains
+valid after a call to `finish_256`, meaning the user may feed more data into
+the hash via `update_256`. (The finish_256 function operates on an internal copy of
+the state and therefore does not invalidate the client-held state `p`.)
+*/
+void Hacl_Streaming_SHA2_finish_256(Hacl_Streaming_MD_state_32 *p, uint8_t *dst)
+{
+  Hacl_Streaming_MD_state_32 scrut = *p;
+  uint32_t *block_state = scrut.block_state;
+  uint8_t *buf_ = scrut.buf;
+  uint64_t total_len = scrut.total_len;
+  uint32_t r;
+  if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
+  {
+    r = (uint32_t)64U;
+  }
+  else
+  {
+    r = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
+  }
+  uint8_t *buf_1 = buf_;
+  uint32_t tmp_block_state[8U] = { 0U };
+  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint32_t));
+  uint32_t ite;
+  if (r % (uint32_t)64U == (uint32_t)0U && r > (uint32_t)0U)
+  {
+    ite = (uint32_t)64U;
+  }
+  else
+  {
+    ite = r % (uint32_t)64U;
+  }
+  uint8_t *buf_last = buf_1 + r - ite;
+  uint8_t *buf_multi = buf_1;
+  Hacl_SHA2_Scalar32_sha256_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
+  uint64_t prev_len_last = total_len - (uint64_t)r;
+  Hacl_SHA2_Scalar32_sha256_update_last(prev_len_last + (uint64_t)r,
+    r,
+    buf_last,
+    tmp_block_state);
+  Hacl_SHA2_Scalar32_sha256_finish(tmp_block_state, dst);
+}
+
+/**
+Free a state allocated with `create_in_256`.
+
+This function is identical to the free function for SHA2_224.
+*/
+void Hacl_Streaming_SHA2_free_256(Hacl_Streaming_MD_state_32 *s)
+{
+  Hacl_Streaming_MD_state_32 scrut = *s;
+  uint8_t *buf = scrut.buf;
+  uint32_t *block_state = scrut.block_state;
+  KRML_HOST_FREE(block_state);
+  KRML_HOST_FREE(buf);
+  KRML_HOST_FREE(s);
+}
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 32 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_256(uint8_t *input, uint32_t input_len, uint8_t *dst)
+{
+  uint8_t *ib = input;
+  uint8_t *rb = dst;
+  uint32_t st[8U] = { 0U };
+  Hacl_SHA2_Scalar32_sha256_init(st);
+  uint32_t rem = input_len % (uint32_t)64U;
+  uint64_t len_ = (uint64_t)input_len;
+  Hacl_SHA2_Scalar32_sha256_update_nblocks(input_len, ib, st);
+  uint32_t rem1 = input_len % (uint32_t)64U;
+  uint8_t *b0 = ib;
+  uint8_t *lb = b0 + input_len - rem1;
+  Hacl_SHA2_Scalar32_sha256_update_last(len_, rem, lb, st);
+  Hacl_SHA2_Scalar32_sha256_finish(st, rb);
+}
+
+Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_224(void)
+{
+  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
+  uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint32_t));
+  Hacl_Streaming_MD_state_32
+  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  Hacl_Streaming_MD_state_32
+  *p = (Hacl_Streaming_MD_state_32 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_32));
+  p[0U] = s;
+  Hacl_SHA2_Scalar32_sha224_init(block_state);
+  return p;
+}
+
+void Hacl_Streaming_SHA2_init_224(Hacl_Streaming_MD_state_32 *s)
+{
+  Hacl_Streaming_MD_state_32 scrut = *s;
+  uint8_t *buf = scrut.buf;
+  uint32_t *block_state = scrut.block_state;
+  Hacl_SHA2_Scalar32_sha224_init(block_state);
+  Hacl_Streaming_MD_state_32
+  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  s[0U] = tmp;
+}
+
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_224(
+  Hacl_Streaming_MD_state_32 *p,
+  uint8_t *input,
+  uint32_t input_len
+)
+{
+  return update_224_256(p, input, input_len);
+}
+
+/**
+Write the resulting hash into `dst`, an array of 28 bytes. The state remains
+valid after a call to `finish_224`, meaning the user may feed more data into
+the hash via `update_224`.
+*/
+void Hacl_Streaming_SHA2_finish_224(Hacl_Streaming_MD_state_32 *p, uint8_t *dst)
+{
+  Hacl_Streaming_MD_state_32 scrut = *p;
+  uint32_t *block_state = scrut.block_state;
+  uint8_t *buf_ = scrut.buf;
+  uint64_t total_len = scrut.total_len;
+  uint32_t r;
+  if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
+  {
+    r = (uint32_t)64U;
+  }
+  else
+  {
+    r = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
+  }
+  uint8_t *buf_1 = buf_;
+  uint32_t tmp_block_state[8U] = { 0U };
+  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint32_t));
+  uint32_t ite;
+  if (r % (uint32_t)64U == (uint32_t)0U && r > (uint32_t)0U)
+  {
+    ite = (uint32_t)64U;
+  }
+  else
+  {
+    ite = r % (uint32_t)64U;
+  }
+  uint8_t *buf_last = buf_1 + r - ite;
+  uint8_t *buf_multi = buf_1;
+  sha224_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
+  uint64_t prev_len_last = total_len - (uint64_t)r;
+  Hacl_SHA2_Scalar32_sha224_update_last(prev_len_last + (uint64_t)r,
+    r,
+    buf_last,
+    tmp_block_state);
+  Hacl_SHA2_Scalar32_sha224_finish(tmp_block_state, dst);
+}
+
+void Hacl_Streaming_SHA2_free_224(Hacl_Streaming_MD_state_32 *p)
+{
+  Hacl_Streaming_SHA2_free_256(p);
+}
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 28 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_224(uint8_t *input, uint32_t input_len, uint8_t *dst)
+{
+  uint8_t *ib = input;
+  uint8_t *rb = dst;
+  uint32_t st[8U] = { 0U };
+  Hacl_SHA2_Scalar32_sha224_init(st);
+  uint32_t rem = input_len % (uint32_t)64U;
+  uint64_t len_ = (uint64_t)input_len;
+  sha224_update_nblocks(input_len, ib, st);
+  uint32_t rem1 = input_len % (uint32_t)64U;
+  uint8_t *b0 = ib;
+  uint8_t *lb = b0 + input_len - rem1;
+  Hacl_SHA2_Scalar32_sha224_update_last(len_, rem, lb, st);
+  Hacl_SHA2_Scalar32_sha224_finish(st, rb);
+}
+
+Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_512(void)
+{
+  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)128U, sizeof (uint8_t));
+  uint64_t *block_state = (uint64_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint64_t));
+  Hacl_Streaming_MD_state_64
+  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  Hacl_Streaming_MD_state_64
+  *p = (Hacl_Streaming_MD_state_64 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_64));
+  p[0U] = s;
+  Hacl_SHA2_Scalar32_sha512_init(block_state);
+  return p;
+}
+
+/**
+Copies the state passed as argument into a newly allocated state (deep copy).
+The state is to be freed by calling `free_512`. Cloning the state this way is
+useful, for instance, if your control-flow diverges and you need to feed
+more (different) data into the hash in each branch.
+*/
+Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_copy_512(Hacl_Streaming_MD_state_64 *s0)
+{
+  Hacl_Streaming_MD_state_64 scrut = *s0;
+  uint64_t *block_state0 = scrut.block_state;
+  uint8_t *buf0 = scrut.buf;
+  uint64_t total_len0 = scrut.total_len;
+  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)128U, sizeof (uint8_t));
+  memcpy(buf, buf0, (uint32_t)128U * sizeof (uint8_t));
+  uint64_t *block_state = (uint64_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint64_t));
+  memcpy(block_state, block_state0, (uint32_t)8U * sizeof (uint64_t));
+  Hacl_Streaming_MD_state_64
+  s = { .block_state = block_state, .buf = buf, .total_len = total_len0 };
+  Hacl_Streaming_MD_state_64
+  *p = (Hacl_Streaming_MD_state_64 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_64));
+  p[0U] = s;
+  return p;
+}
+
+void Hacl_Streaming_SHA2_init_512(Hacl_Streaming_MD_state_64 *s)
+{
+  Hacl_Streaming_MD_state_64 scrut = *s;
+  uint8_t *buf = scrut.buf;
+  uint64_t *block_state = scrut.block_state;
+  Hacl_SHA2_Scalar32_sha512_init(block_state);
+  Hacl_Streaming_MD_state_64
+  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  s[0U] = tmp;
+}
+
+static inline Hacl_Streaming_Types_error_code
+update_384_512(Hacl_Streaming_MD_state_64 *p, uint8_t *data, uint32_t len)
+{
+  Hacl_Streaming_MD_state_64 s = *p;
+  uint64_t total_len = s.total_len;
+  if ((uint64_t)len > (uint64_t)18446744073709551615U - total_len)
+  {
+    return Hacl_Streaming_Types_MaximumLengthExceeded;
+  }
+  uint32_t sz;
+  if (total_len % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len > (uint64_t)0U)
+  {
+    sz = (uint32_t)128U;
+  }
+  else
+  {
+    sz = (uint32_t)(total_len % (uint64_t)(uint32_t)128U);
+  }
+  if (len <= (uint32_t)128U - sz)
+  {
+    Hacl_Streaming_MD_state_64 s1 = *p;
+    uint64_t *block_state1 = s1.block_state;
+    uint8_t *buf = s1.buf;
+    uint64_t total_len1 = s1.total_len;
+    uint32_t sz1;
+    if (total_len1 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len1 > (uint64_t)0U)
+    {
+      sz1 = (uint32_t)128U;
+    }
+    else
+    {
+      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)128U);
+    }
+    uint8_t *buf2 = buf + sz1;
+    memcpy(buf2, data, len * sizeof (uint8_t));
+    uint64_t total_len2 = total_len1 + (uint64_t)len;
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_64){
+          .block_state = block_state1,
+          .buf = buf,
+          .total_len = total_len2
+        }
+      );
+  }
+  else if (sz == (uint32_t)0U)
+  {
+    Hacl_Streaming_MD_state_64 s1 = *p;
+    uint64_t *block_state1 = s1.block_state;
+    uint8_t *buf = s1.buf;
+    uint64_t total_len1 = s1.total_len;
+    uint32_t sz1;
+    if (total_len1 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len1 > (uint64_t)0U)
+    {
+      sz1 = (uint32_t)128U;
+    }
+    else
+    {
+      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)128U);
+    }
+    if (!(sz1 == (uint32_t)0U))
+    {
+      Hacl_SHA2_Scalar32_sha512_update_nblocks((uint32_t)128U, buf, block_state1);
+    }
+    uint32_t ite;
+    if ((uint64_t)len % (uint64_t)(uint32_t)128U == (uint64_t)0U && (uint64_t)len > (uint64_t)0U)
+    {
+      ite = (uint32_t)128U;
+    }
+    else
+    {
+      ite = (uint32_t)((uint64_t)len % (uint64_t)(uint32_t)128U);
+    }
+    uint32_t n_blocks = (len - ite) / (uint32_t)128U;
+    uint32_t data1_len = n_blocks * (uint32_t)128U;
+    uint32_t data2_len = len - data1_len;
+    uint8_t *data1 = data;
+    uint8_t *data2 = data + data1_len;
+    Hacl_SHA2_Scalar32_sha512_update_nblocks(data1_len / (uint32_t)128U * (uint32_t)128U,
+      data1,
+      block_state1);
+    uint8_t *dst = buf;
+    memcpy(dst, data2, data2_len * sizeof (uint8_t));
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_64){
+          .block_state = block_state1,
+          .buf = buf,
+          .total_len = total_len1 + (uint64_t)len
+        }
+      );
+  }
+  else
+  {
+    uint32_t diff = (uint32_t)128U - sz;
+    uint8_t *data1 = data;
+    uint8_t *data2 = data + diff;
+    Hacl_Streaming_MD_state_64 s1 = *p;
+    uint64_t *block_state10 = s1.block_state;
+    uint8_t *buf0 = s1.buf;
+    uint64_t total_len10 = s1.total_len;
+    uint32_t sz10;
+    if (total_len10 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len10 > (uint64_t)0U)
+    {
+      sz10 = (uint32_t)128U;
+    }
+    else
+    {
+      sz10 = (uint32_t)(total_len10 % (uint64_t)(uint32_t)128U);
+    }
+    uint8_t *buf2 = buf0 + sz10;
+    memcpy(buf2, data1, diff * sizeof (uint8_t));
+    uint64_t total_len2 = total_len10 + (uint64_t)diff;
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_64){
+          .block_state = block_state10,
+          .buf = buf0,
+          .total_len = total_len2
+        }
+      );
+    Hacl_Streaming_MD_state_64 s10 = *p;
+    uint64_t *block_state1 = s10.block_state;
+    uint8_t *buf = s10.buf;
+    uint64_t total_len1 = s10.total_len;
+    uint32_t sz1;
+    if (total_len1 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len1 > (uint64_t)0U)
+    {
+      sz1 = (uint32_t)128U;
+    }
+    else
+    {
+      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)128U);
+    }
+    if (!(sz1 == (uint32_t)0U))
+    {
+      Hacl_SHA2_Scalar32_sha512_update_nblocks((uint32_t)128U, buf, block_state1);
+    }
+    uint32_t ite;
+    if
+    (
+      (uint64_t)(len - diff)
+      % (uint64_t)(uint32_t)128U
+      == (uint64_t)0U
+      && (uint64_t)(len - diff) > (uint64_t)0U
+    )
+    {
+      ite = (uint32_t)128U;
+    }
+    else
+    {
+      ite = (uint32_t)((uint64_t)(len - diff) % (uint64_t)(uint32_t)128U);
+    }
+    uint32_t n_blocks = (len - diff - ite) / (uint32_t)128U;
+    uint32_t data1_len = n_blocks * (uint32_t)128U;
+    uint32_t data2_len = len - diff - data1_len;
+    uint8_t *data11 = data2;
+    uint8_t *data21 = data2 + data1_len;
+    Hacl_SHA2_Scalar32_sha512_update_nblocks(data1_len / (uint32_t)128U * (uint32_t)128U,
+      data11,
+      block_state1);
+    uint8_t *dst = buf;
+    memcpy(dst, data21, data2_len * sizeof (uint8_t));
+    *p
+    =
+      (
+        (Hacl_Streaming_MD_state_64){
+          .block_state = block_state1,
+          .buf = buf,
+          .total_len = total_len1 + (uint64_t)(len - diff)
+        }
+      );
+  }
+  return Hacl_Streaming_Types_Success;
+}
+
+/**
+Feed an arbitrary amount of data into the hash. This function returns 0 for
+success, or 1 if the combined length of all of the data passed to `update_512`
+(since the last call to `init_512`) exceeds 2^125-1 bytes.
+
+This function is identical to the update function for SHA2_384.
+*/
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_512(
+  Hacl_Streaming_MD_state_64 *p,
+  uint8_t *input,
+  uint32_t input_len
+)
+{
+  return update_384_512(p, input, input_len);
+}
+
+/**
+Write the resulting hash into `dst`, an array of 64 bytes. The state remains
+valid after a call to `finish_512`, meaning the user may feed more data into
+the hash via `update_512`. (The finish_512 function operates on an internal copy of
+the state and therefore does not invalidate the client-held state `p`.)
+*/
+void Hacl_Streaming_SHA2_finish_512(Hacl_Streaming_MD_state_64 *p, uint8_t *dst)
+{
+  Hacl_Streaming_MD_state_64 scrut = *p;
+  uint64_t *block_state = scrut.block_state;
+  uint8_t *buf_ = scrut.buf;
+  uint64_t total_len = scrut.total_len;
+  uint32_t r;
+  if (total_len % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len > (uint64_t)0U)
+  {
+    r = (uint32_t)128U;
+  }
+  else
+  {
+    r = (uint32_t)(total_len % (uint64_t)(uint32_t)128U);
+  }
+  uint8_t *buf_1 = buf_;
+  uint64_t tmp_block_state[8U] = { 0U };
+  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint64_t));
+  uint32_t ite;
+  if (r % (uint32_t)128U == (uint32_t)0U && r > (uint32_t)0U)
+  {
+    ite = (uint32_t)128U;
+  }
+  else
+  {
+    ite = r % (uint32_t)128U;
+  }
+  uint8_t *buf_last = buf_1 + r - ite;
+  uint8_t *buf_multi = buf_1;
+  Hacl_SHA2_Scalar32_sha512_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
+  uint64_t prev_len_last = total_len - (uint64_t)r;
+  Hacl_SHA2_Scalar32_sha512_update_last(FStar_UInt128_add(FStar_UInt128_uint64_to_uint128(prev_len_last),
+      FStar_UInt128_uint64_to_uint128((uint64_t)r)),
+    r,
+    buf_last,
+    tmp_block_state);
+  Hacl_SHA2_Scalar32_sha512_finish(tmp_block_state, dst);
+}
+
+/**
+Free a state allocated with `create_in_512`.
+
+This function is identical to the free function for SHA2_384.
+*/
+void Hacl_Streaming_SHA2_free_512(Hacl_Streaming_MD_state_64 *s)
+{
+  Hacl_Streaming_MD_state_64 scrut = *s;
+  uint8_t *buf = scrut.buf;
+  uint64_t *block_state = scrut.block_state;
+  KRML_HOST_FREE(block_state);
+  KRML_HOST_FREE(buf);
+  KRML_HOST_FREE(s);
+}
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 64 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_512(uint8_t *input, uint32_t input_len, uint8_t *dst)
+{
+  uint8_t *ib = input;
+  uint8_t *rb = dst;
+  uint64_t st[8U] = { 0U };
+  Hacl_SHA2_Scalar32_sha512_init(st);
+  uint32_t rem = input_len % (uint32_t)128U;
+  FStar_UInt128_uint128 len_ = FStar_UInt128_uint64_to_uint128((uint64_t)input_len);
+  Hacl_SHA2_Scalar32_sha512_update_nblocks(input_len, ib, st);
+  uint32_t rem1 = input_len % (uint32_t)128U;
+  uint8_t *b0 = ib;
+  uint8_t *lb = b0 + input_len - rem1;
+  Hacl_SHA2_Scalar32_sha512_update_last(len_, rem, lb, st);
+  Hacl_SHA2_Scalar32_sha512_finish(st, rb);
+}
+
+Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_384(void)
+{
+  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)128U, sizeof (uint8_t));
+  uint64_t *block_state = (uint64_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint64_t));
+  Hacl_Streaming_MD_state_64
+  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  Hacl_Streaming_MD_state_64
+  *p = (Hacl_Streaming_MD_state_64 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_64));
+  p[0U] = s;
+  Hacl_SHA2_Scalar32_sha384_init(block_state);
+  return p;
+}
+
+void Hacl_Streaming_SHA2_init_384(Hacl_Streaming_MD_state_64 *s)
+{
+  Hacl_Streaming_MD_state_64 scrut = *s;
+  uint8_t *buf = scrut.buf;
+  uint64_t *block_state = scrut.block_state;
+  Hacl_SHA2_Scalar32_sha384_init(block_state);
+  Hacl_Streaming_MD_state_64
+  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
+  s[0U] = tmp;
+}
+
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_384(
+  Hacl_Streaming_MD_state_64 *p,
+  uint8_t *input,
+  uint32_t input_len
+)
+{
+  return update_384_512(p, input, input_len);
+}
+
+/**
+Write the resulting hash into `dst`, an array of 48 bytes. The state remains
+valid after a call to `finish_384`, meaning the user may feed more data into
+the hash via `update_384`.
+*/
+void Hacl_Streaming_SHA2_finish_384(Hacl_Streaming_MD_state_64 *p, uint8_t *dst)
+{
+  Hacl_Streaming_MD_state_64 scrut = *p;
+  uint64_t *block_state = scrut.block_state;
+  uint8_t *buf_ = scrut.buf;
+  uint64_t total_len = scrut.total_len;
+  uint32_t r;
+  if (total_len % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len > (uint64_t)0U)
+  {
+    r = (uint32_t)128U;
+  }
+  else
+  {
+    r = (uint32_t)(total_len % (uint64_t)(uint32_t)128U);
+  }
+  uint8_t *buf_1 = buf_;
+  uint64_t tmp_block_state[8U] = { 0U };
+  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint64_t));
+  uint32_t ite;
+  if (r % (uint32_t)128U == (uint32_t)0U && r > (uint32_t)0U)
+  {
+    ite = (uint32_t)128U;
+  }
+  else
+  {
+    ite = r % (uint32_t)128U;
+  }
+  uint8_t *buf_last = buf_1 + r - ite;
+  uint8_t *buf_multi = buf_1;
+  Hacl_SHA2_Scalar32_sha384_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
+  uint64_t prev_len_last = total_len - (uint64_t)r;
+  Hacl_SHA2_Scalar32_sha384_update_last(FStar_UInt128_add(FStar_UInt128_uint64_to_uint128(prev_len_last),
+      FStar_UInt128_uint64_to_uint128((uint64_t)r)),
+    r,
+    buf_last,
+    tmp_block_state);
+  Hacl_SHA2_Scalar32_sha384_finish(tmp_block_state, dst);
+}
+
+void Hacl_Streaming_SHA2_free_384(Hacl_Streaming_MD_state_64 *p)
+{
+  Hacl_Streaming_SHA2_free_512(p);
+}
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 48 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_384(uint8_t *input, uint32_t input_len, uint8_t *dst)
+{
+  uint8_t *ib = input;
+  uint8_t *rb = dst;
+  uint64_t st[8U] = { 0U };
+  Hacl_SHA2_Scalar32_sha384_init(st);
+  uint32_t rem = input_len % (uint32_t)128U;
+  FStar_UInt128_uint128 len_ = FStar_UInt128_uint64_to_uint128((uint64_t)input_len);
+  Hacl_SHA2_Scalar32_sha384_update_nblocks(input_len, ib, st);
+  uint32_t rem1 = input_len % (uint32_t)128U;
+  uint8_t *b0 = ib;
+  uint8_t *lb = b0 + input_len - rem1;
+  Hacl_SHA2_Scalar32_sha384_update_last(len_, rem, lb, st);
+  Hacl_SHA2_Scalar32_sha384_finish(st, rb);
+}
+
diff --git a/Modules/_hacl/Hacl_Hash_SHA2.h b/Modules/_hacl/Hacl_Hash_SHA2.h
new file mode 100644
index 00000000000000..a0e731094dfaa5
--- /dev/null
+++ b/Modules/_hacl/Hacl_Hash_SHA2.h
@@ -0,0 +1,204 @@
+/* MIT License
+ *
+ * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
+ * Copyright (c) 2022-2023 HACL* Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#ifndef __Hacl_Hash_SHA2_H
+#define __Hacl_Hash_SHA2_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#include <string.h>
+#include "python_hacl_namespaces.h"
+#include "krml/types.h"
+#include "krml/lowstar_endianness.h"
+#include "krml/internal/target.h"
+
+#include "Hacl_Streaming_Types.h"
+
+
+typedef Hacl_Streaming_MD_state_32 Hacl_Streaming_SHA2_state_sha2_224;
+
+typedef Hacl_Streaming_MD_state_32 Hacl_Streaming_SHA2_state_sha2_256;
+
+typedef Hacl_Streaming_MD_state_64 Hacl_Streaming_SHA2_state_sha2_384;
+
+typedef Hacl_Streaming_MD_state_64 Hacl_Streaming_SHA2_state_sha2_512;
+
+/**
+Allocate initial state for the SHA2_256 hash. The state is to be freed by
+calling `free_256`.
+*/
+Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_256(void);
+
+/**
+Copies the state passed as argument into a newly allocated state (deep copy).
+The state is to be freed by calling `free_256`. Cloning the state this way is
+useful, for instance, if your control-flow diverges and you need to feed
+more (different) data into the hash in each branch.
+*/
+Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_copy_256(Hacl_Streaming_MD_state_32 *s0);
+
+/**
+Reset an existing state to the initial hash state with empty data.
+*/
+void Hacl_Streaming_SHA2_init_256(Hacl_Streaming_MD_state_32 *s);
+
+/**
+Feed an arbitrary amount of data into the hash. This function returns 0 for
+success, or 1 if the combined length of all of the data passed to `update_256`
+(since the last call to `init_256`) exceeds 2^61-1 bytes.
+
+This function is identical to the update function for SHA2_224.
+*/
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_256(
+  Hacl_Streaming_MD_state_32 *p,
+  uint8_t *input,
+  uint32_t input_len
+);
+
+/**
+Write the resulting hash into `dst`, an array of 32 bytes. The state remains
+valid after a call to `finish_256`, meaning the user may feed more data into
+the hash via `update_256`. (The finish_256 function operates on an internal copy of
+the state and therefore does not invalidate the client-held state `p`.)
+*/
+void Hacl_Streaming_SHA2_finish_256(Hacl_Streaming_MD_state_32 *p, uint8_t *dst);
+
+/**
+Free a state allocated with `create_in_256`.
+
+This function is identical to the free function for SHA2_224.
+*/
+void Hacl_Streaming_SHA2_free_256(Hacl_Streaming_MD_state_32 *s);
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 32 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_256(uint8_t *input, uint32_t input_len, uint8_t *dst);
+
+Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_224(void);
+
+void Hacl_Streaming_SHA2_init_224(Hacl_Streaming_MD_state_32 *s);
+
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_224(
+  Hacl_Streaming_MD_state_32 *p,
+  uint8_t *input,
+  uint32_t input_len
+);
+
+/**
+Write the resulting hash into `dst`, an array of 28 bytes. The state remains
+valid after a call to `finish_224`, meaning the user may feed more data into
+the hash via `update_224`.
+*/
+void Hacl_Streaming_SHA2_finish_224(Hacl_Streaming_MD_state_32 *p, uint8_t *dst);
+
+void Hacl_Streaming_SHA2_free_224(Hacl_Streaming_MD_state_32 *p);
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 28 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_224(uint8_t *input, uint32_t input_len, uint8_t *dst);
+
+Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_512(void);
+
+/**
+Copies the state passed as argument into a newly allocated state (deep copy).
+The state is to be freed by calling `free_512`. Cloning the state this way is
+useful, for instance, if your control-flow diverges and you need to feed
+more (different) data into the hash in each branch.
+*/
+Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_copy_512(Hacl_Streaming_MD_state_64 *s0);
+
+void Hacl_Streaming_SHA2_init_512(Hacl_Streaming_MD_state_64 *s);
+
+/**
+Feed an arbitrary amount of data into the hash. This function returns 0 for
+success, or 1 if the combined length of all of the data passed to `update_512`
+(since the last call to `init_512`) exceeds 2^125-1 bytes.
+
+This function is identical to the update function for SHA2_384.
+*/
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_512(
+  Hacl_Streaming_MD_state_64 *p,
+  uint8_t *input,
+  uint32_t input_len
+);
+
+/**
+Write the resulting hash into `dst`, an array of 64 bytes. The state remains
+valid after a call to `finish_512`, meaning the user may feed more data into
+the hash via `update_512`. (The finish_512 function operates on an internal copy of
+the state and therefore does not invalidate the client-held state `p`.)
+*/
+void Hacl_Streaming_SHA2_finish_512(Hacl_Streaming_MD_state_64 *p, uint8_t *dst);
+
+/**
+Free a state allocated with `create_in_512`.
+
+This function is identical to the free function for SHA2_384.
+*/
+void Hacl_Streaming_SHA2_free_512(Hacl_Streaming_MD_state_64 *s);
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 64 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_512(uint8_t *input, uint32_t input_len, uint8_t *dst);
+
+Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_384(void);
+
+void Hacl_Streaming_SHA2_init_384(Hacl_Streaming_MD_state_64 *s);
+
+Hacl_Streaming_Types_error_code
+Hacl_Streaming_SHA2_update_384(
+  Hacl_Streaming_MD_state_64 *p,
+  uint8_t *input,
+  uint32_t input_len
+);
+
+/**
+Write the resulting hash into `dst`, an array of 48 bytes. The state remains
+valid after a call to `finish_384`, meaning the user may feed more data into
+the hash via `update_384`.
+*/
+void Hacl_Streaming_SHA2_finish_384(Hacl_Streaming_MD_state_64 *p, uint8_t *dst);
+
+void Hacl_Streaming_SHA2_free_384(Hacl_Streaming_MD_state_64 *p);
+
+/**
+Hash `input`, of len `input_len`, into `dst`, an array of 48 bytes.
+*/
+void Hacl_Streaming_SHA2_hash_384(uint8_t *input, uint32_t input_len, uint8_t *dst);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#define __Hacl_Hash_SHA2_H_DEFINED
+#endif
diff --git a/Modules/_hacl/Hacl_Hash_SHA3.c b/Modules/_hacl/Hacl_Hash_SHA3.c
index 58eb436881d45c..b3febdfeb2b221 100644
--- a/Modules/_hacl/Hacl_Hash_SHA3.c
+++ b/Modules/_hacl/Hacl_Hash_SHA3.c
@@ -184,8 +184,7 @@ Hacl_Streaming_Keccak_state *Hacl_Streaming_Keccak_malloc(Spec_Hash_Definitions_
   *p = (Hacl_Streaming_Keccak_state *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_Keccak_state));
   p[0U] = s;
   uint64_t *s1 = block_state.snd;
-  for (uint32_t _i = 0U; _i < (uint32_t)25U; ++_i)
-    ((void **)s1)[_i] = (void *)(uint64_t)0U;
+  memset(s1, 0U, (uint32_t)25U * sizeof (uint64_t));
   return p;
 }
 
@@ -230,23 +229,22 @@ void Hacl_Streaming_Keccak_reset(Hacl_Streaming_Keccak_state *s)
   uint8_t *buf = scrut.buf;
   Hacl_Streaming_Keccak_hash_buf block_state = scrut.block_state;
   uint64_t *s1 = block_state.snd;
-  for (uint32_t _i = 0U; _i < (uint32_t)25U; ++_i)
-    ((void **)s1)[_i] = (void *)(uint64_t)0U;
+  memset(s1, 0U, (uint32_t)25U * sizeof (uint64_t));
   Hacl_Streaming_Keccak_state
   tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
   s[0U] = tmp;
 }
 
-uint32_t
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_Keccak_update(Hacl_Streaming_Keccak_state *p, uint8_t *data, uint32_t len)
 {
   Hacl_Streaming_Keccak_state s = *p;
   Hacl_Streaming_Keccak_hash_buf block_state = s.block_state;
   uint64_t total_len = s.total_len;
   Spec_Hash_Definitions_hash_alg i = block_state.fst;
-  if ((uint64_t)len > (uint64_t)0xffffffffffffffffU - total_len)
+  if ((uint64_t)len > (uint64_t)0xFFFFFFFFFFFFFFFFU - total_len)
   {
-    return (uint32_t)1U;
+    return Hacl_Streaming_Types_MaximumLengthExceeded;
   }
   uint32_t sz;
   if (total_len % (uint64_t)block_len(i) == (uint64_t)0U && total_len > (uint64_t)0U)
@@ -419,7 +417,7 @@ Hacl_Streaming_Keccak_update(Hacl_Streaming_Keccak_state *p, uint8_t *data, uint
         }
       );
   }
-  return (uint32_t)0U;
+  return Hacl_Streaming_Types_Success;
 }
 
 static void
@@ -486,32 +484,32 @@ finish_(
   Hacl_Impl_SHA3_squeeze(s, block_len(a11), hash_len(a11), dst);
 }
 
-Hacl_Streaming_Keccak_error_code
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_Keccak_finish(Hacl_Streaming_Keccak_state *s, uint8_t *dst)
 {
   Spec_Hash_Definitions_hash_alg a1 = Hacl_Streaming_Keccak_get_alg(s);
   if (a1 == Spec_Hash_Definitions_Shake128 || a1 == Spec_Hash_Definitions_Shake256)
   {
-    return Hacl_Streaming_Keccak_InvalidAlgorithm;
+    return Hacl_Streaming_Types_InvalidAlgorithm;
   }
   finish_(a1, s, dst, hash_len(a1));
-  return Hacl_Streaming_Keccak_Success;
+  return Hacl_Streaming_Types_Success;
 }
 
-Hacl_Streaming_Keccak_error_code
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_Keccak_squeeze(Hacl_Streaming_Keccak_state *s, uint8_t *dst, uint32_t l)
 {
   Spec_Hash_Definitions_hash_alg a1 = Hacl_Streaming_Keccak_get_alg(s);
   if (!(a1 == Spec_Hash_Definitions_Shake128 || a1 == Spec_Hash_Definitions_Shake256))
   {
-    return Hacl_Streaming_Keccak_InvalidAlgorithm;
+    return Hacl_Streaming_Types_InvalidAlgorithm;
   }
   if (l == (uint32_t)0U)
   {
-    return Hacl_Streaming_Keccak_InvalidLength;
+    return Hacl_Streaming_Types_InvalidLength;
   }
   finish_(a1, s, dst, l);
-  return Hacl_Streaming_Keccak_Success;
+  return Hacl_Streaming_Types_Success;
 }
 
 uint32_t Hacl_Streaming_Keccak_block_len(Hacl_Streaming_Keccak_state *s)
diff --git a/Modules/_hacl/Hacl_Hash_SHA3.h b/Modules/_hacl/Hacl_Hash_SHA3.h
index 2a5cf4b1844b9d..681b6af4a80e77 100644
--- a/Modules/_hacl/Hacl_Hash_SHA3.h
+++ b/Modules/_hacl/Hacl_Hash_SHA3.h
@@ -62,19 +62,13 @@ Hacl_Streaming_Keccak_state *Hacl_Streaming_Keccak_copy(Hacl_Streaming_Keccak_st
 
 void Hacl_Streaming_Keccak_reset(Hacl_Streaming_Keccak_state *s);
 
-uint32_t
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_Keccak_update(Hacl_Streaming_Keccak_state *p, uint8_t *data, uint32_t len);
 
-#define Hacl_Streaming_Keccak_Success 0
-#define Hacl_Streaming_Keccak_InvalidAlgorithm 1
-#define Hacl_Streaming_Keccak_InvalidLength 2
-
-typedef uint8_t Hacl_Streaming_Keccak_error_code;
-
-Hacl_Streaming_Keccak_error_code
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_Keccak_finish(Hacl_Streaming_Keccak_state *s, uint8_t *dst);
 
-Hacl_Streaming_Keccak_error_code
+Hacl_Streaming_Types_error_code
 Hacl_Streaming_Keccak_squeeze(Hacl_Streaming_Keccak_state *s, uint8_t *dst, uint32_t l);
 
 uint32_t Hacl_Streaming_Keccak_block_len(Hacl_Streaming_Keccak_state *s);
diff --git a/Modules/_hacl/Hacl_Streaming_SHA2.c b/Modules/_hacl/Hacl_Streaming_SHA2.c
deleted file mode 100644
index 69c3be8cdf7fd1..00000000000000
--- a/Modules/_hacl/Hacl_Streaming_SHA2.c
+++ /dev/null
@@ -1,1316 +0,0 @@
-/* MIT License
- *
- * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
- * Copyright (c) 2022-2023 HACL* Contributors
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-
-#include "Hacl_Streaming_SHA2.h"
-
-#include "internal/Hacl_SHA2_Generic.h"
-
-
-static inline void sha256_init(uint32_t *hash)
-{
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    uint32_t *os = hash;
-    uint32_t x = Hacl_Impl_SHA2_Generic_h256[i];
-    os[i] = x;);
-}
-
-static inline void sha256_update0(uint8_t *b, uint32_t *hash)
-{
-  uint32_t hash_old[8U] = { 0U };
-  uint32_t ws[16U] = { 0U };
-  memcpy(hash_old, hash, (uint32_t)8U * sizeof (uint32_t));
-  uint8_t *b10 = b;
-  uint32_t u = load32_be(b10);
-  ws[0U] = u;
-  uint32_t u0 = load32_be(b10 + (uint32_t)4U);
-  ws[1U] = u0;
-  uint32_t u1 = load32_be(b10 + (uint32_t)8U);
-  ws[2U] = u1;
-  uint32_t u2 = load32_be(b10 + (uint32_t)12U);
-  ws[3U] = u2;
-  uint32_t u3 = load32_be(b10 + (uint32_t)16U);
-  ws[4U] = u3;
-  uint32_t u4 = load32_be(b10 + (uint32_t)20U);
-  ws[5U] = u4;
-  uint32_t u5 = load32_be(b10 + (uint32_t)24U);
-  ws[6U] = u5;
-  uint32_t u6 = load32_be(b10 + (uint32_t)28U);
-  ws[7U] = u6;
-  uint32_t u7 = load32_be(b10 + (uint32_t)32U);
-  ws[8U] = u7;
-  uint32_t u8 = load32_be(b10 + (uint32_t)36U);
-  ws[9U] = u8;
-  uint32_t u9 = load32_be(b10 + (uint32_t)40U);
-  ws[10U] = u9;
-  uint32_t u10 = load32_be(b10 + (uint32_t)44U);
-  ws[11U] = u10;
-  uint32_t u11 = load32_be(b10 + (uint32_t)48U);
-  ws[12U] = u11;
-  uint32_t u12 = load32_be(b10 + (uint32_t)52U);
-  ws[13U] = u12;
-  uint32_t u13 = load32_be(b10 + (uint32_t)56U);
-  ws[14U] = u13;
-  uint32_t u14 = load32_be(b10 + (uint32_t)60U);
-  ws[15U] = u14;
-  KRML_MAYBE_FOR4(i0,
-    (uint32_t)0U,
-    (uint32_t)4U,
-    (uint32_t)1U,
-    KRML_MAYBE_FOR16(i,
-      (uint32_t)0U,
-      (uint32_t)16U,
-      (uint32_t)1U,
-      uint32_t k_t = Hacl_Impl_SHA2_Generic_k224_256[(uint32_t)16U * i0 + i];
-      uint32_t ws_t = ws[i];
-      uint32_t a0 = hash[0U];
-      uint32_t b0 = hash[1U];
-      uint32_t c0 = hash[2U];
-      uint32_t d0 = hash[3U];
-      uint32_t e0 = hash[4U];
-      uint32_t f0 = hash[5U];
-      uint32_t g0 = hash[6U];
-      uint32_t h02 = hash[7U];
-      uint32_t k_e_t = k_t;
-      uint32_t
-      t1 =
-        h02
-        +
-          ((e0 << (uint32_t)26U | e0 >> (uint32_t)6U)
-          ^
-            ((e0 << (uint32_t)21U | e0 >> (uint32_t)11U)
-            ^ (e0 << (uint32_t)7U | e0 >> (uint32_t)25U)))
-        + ((e0 & f0) ^ (~e0 & g0))
-        + k_e_t
-        + ws_t;
-      uint32_t
-      t2 =
-        ((a0 << (uint32_t)30U | a0 >> (uint32_t)2U)
-        ^
-          ((a0 << (uint32_t)19U | a0 >> (uint32_t)13U)
-          ^ (a0 << (uint32_t)10U | a0 >> (uint32_t)22U)))
-        + ((a0 & b0) ^ ((a0 & c0) ^ (b0 & c0)));
-      uint32_t a1 = t1 + t2;
-      uint32_t b1 = a0;
-      uint32_t c1 = b0;
-      uint32_t d1 = c0;
-      uint32_t e1 = d0 + t1;
-      uint32_t f1 = e0;
-      uint32_t g1 = f0;
-      uint32_t h12 = g0;
-      hash[0U] = a1;
-      hash[1U] = b1;
-      hash[2U] = c1;
-      hash[3U] = d1;
-      hash[4U] = e1;
-      hash[5U] = f1;
-      hash[6U] = g1;
-      hash[7U] = h12;);
-    if (i0 < (uint32_t)3U)
-    {
-      KRML_MAYBE_FOR16(i,
-        (uint32_t)0U,
-        (uint32_t)16U,
-        (uint32_t)1U,
-        uint32_t t16 = ws[i];
-        uint32_t t15 = ws[(i + (uint32_t)1U) % (uint32_t)16U];
-        uint32_t t7 = ws[(i + (uint32_t)9U) % (uint32_t)16U];
-        uint32_t t2 = ws[(i + (uint32_t)14U) % (uint32_t)16U];
-        uint32_t
-        s1 =
-          (t2 << (uint32_t)15U | t2 >> (uint32_t)17U)
-          ^ ((t2 << (uint32_t)13U | t2 >> (uint32_t)19U) ^ t2 >> (uint32_t)10U);
-        uint32_t
-        s0 =
-          (t15 << (uint32_t)25U | t15 >> (uint32_t)7U)
-          ^ ((t15 << (uint32_t)14U | t15 >> (uint32_t)18U) ^ t15 >> (uint32_t)3U);
-        ws[i] = s1 + t7 + s0 + t16;);
-    });
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    uint32_t *os = hash;
-    uint32_t x = hash[i] + hash_old[i];
-    os[i] = x;);
-}
-
-static inline void sha256_update_nblocks(uint32_t len, uint8_t *b, uint32_t *st)
-{
-  uint32_t blocks = len / (uint32_t)64U;
-  for (uint32_t i = (uint32_t)0U; i < blocks; i++)
-  {
-    uint8_t *b0 = b;
-    uint8_t *mb = b0 + i * (uint32_t)64U;
-    sha256_update0(mb, st);
-  }
-}
-
-static inline void
-sha256_update_last(uint64_t totlen, uint32_t len, uint8_t *b, uint32_t *hash)
-{
-  uint32_t blocks;
-  if (len + (uint32_t)8U + (uint32_t)1U <= (uint32_t)64U)
-  {
-    blocks = (uint32_t)1U;
-  }
-  else
-  {
-    blocks = (uint32_t)2U;
-  }
-  uint32_t fin = blocks * (uint32_t)64U;
-  uint8_t last[128U] = { 0U };
-  uint8_t totlen_buf[8U] = { 0U };
-  uint64_t total_len_bits = totlen << (uint32_t)3U;
-  store64_be(totlen_buf, total_len_bits);
-  uint8_t *b0 = b;
-  memcpy(last, b0, len * sizeof (uint8_t));
-  last[len] = (uint8_t)0x80U;
-  memcpy(last + fin - (uint32_t)8U, totlen_buf, (uint32_t)8U * sizeof (uint8_t));
-  uint8_t *last00 = last;
-  uint8_t *last10 = last + (uint32_t)64U;
-  uint8_t *l0 = last00;
-  uint8_t *l1 = last10;
-  uint8_t *lb0 = l0;
-  uint8_t *lb1 = l1;
-  uint8_t *last0 = lb0;
-  uint8_t *last1 = lb1;
-  sha256_update0(last0, hash);
-  if (blocks > (uint32_t)1U)
-  {
-    sha256_update0(last1, hash);
-    return;
-  }
-}
-
-static inline void sha256_finish(uint32_t *st, uint8_t *h)
-{
-  uint8_t hbuf[32U] = { 0U };
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    store32_be(hbuf + i * (uint32_t)4U, st[i]););
-  memcpy(h, hbuf, (uint32_t)32U * sizeof (uint8_t));
-}
-
-static inline void sha224_init(uint32_t *hash)
-{
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    uint32_t *os = hash;
-    uint32_t x = Hacl_Impl_SHA2_Generic_h224[i];
-    os[i] = x;);
-}
-
-static inline void sha224_update_nblocks(uint32_t len, uint8_t *b, uint32_t *st)
-{
-  sha256_update_nblocks(len, b, st);
-}
-
-static void sha224_update_last(uint64_t totlen, uint32_t len, uint8_t *b, uint32_t *st)
-{
-  sha256_update_last(totlen, len, b, st);
-}
-
-static inline void sha224_finish(uint32_t *st, uint8_t *h)
-{
-  uint8_t hbuf[32U] = { 0U };
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    store32_be(hbuf + i * (uint32_t)4U, st[i]););
-  memcpy(h, hbuf, (uint32_t)28U * sizeof (uint8_t));
-}
-
-void Hacl_SHA2_Scalar32_sha512_init(uint64_t *hash)
-{
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    uint64_t *os = hash;
-    uint64_t x = Hacl_Impl_SHA2_Generic_h512[i];
-    os[i] = x;);
-}
-
-static inline void sha512_update(uint8_t *b, uint64_t *hash)
-{
-  uint64_t hash_old[8U] = { 0U };
-  uint64_t ws[16U] = { 0U };
-  memcpy(hash_old, hash, (uint32_t)8U * sizeof (uint64_t));
-  uint8_t *b10 = b;
-  uint64_t u = load64_be(b10);
-  ws[0U] = u;
-  uint64_t u0 = load64_be(b10 + (uint32_t)8U);
-  ws[1U] = u0;
-  uint64_t u1 = load64_be(b10 + (uint32_t)16U);
-  ws[2U] = u1;
-  uint64_t u2 = load64_be(b10 + (uint32_t)24U);
-  ws[3U] = u2;
-  uint64_t u3 = load64_be(b10 + (uint32_t)32U);
-  ws[4U] = u3;
-  uint64_t u4 = load64_be(b10 + (uint32_t)40U);
-  ws[5U] = u4;
-  uint64_t u5 = load64_be(b10 + (uint32_t)48U);
-  ws[6U] = u5;
-  uint64_t u6 = load64_be(b10 + (uint32_t)56U);
-  ws[7U] = u6;
-  uint64_t u7 = load64_be(b10 + (uint32_t)64U);
-  ws[8U] = u7;
-  uint64_t u8 = load64_be(b10 + (uint32_t)72U);
-  ws[9U] = u8;
-  uint64_t u9 = load64_be(b10 + (uint32_t)80U);
-  ws[10U] = u9;
-  uint64_t u10 = load64_be(b10 + (uint32_t)88U);
-  ws[11U] = u10;
-  uint64_t u11 = load64_be(b10 + (uint32_t)96U);
-  ws[12U] = u11;
-  uint64_t u12 = load64_be(b10 + (uint32_t)104U);
-  ws[13U] = u12;
-  uint64_t u13 = load64_be(b10 + (uint32_t)112U);
-  ws[14U] = u13;
-  uint64_t u14 = load64_be(b10 + (uint32_t)120U);
-  ws[15U] = u14;
-  KRML_MAYBE_FOR5(i0,
-    (uint32_t)0U,
-    (uint32_t)5U,
-    (uint32_t)1U,
-    KRML_MAYBE_FOR16(i,
-      (uint32_t)0U,
-      (uint32_t)16U,
-      (uint32_t)1U,
-      uint64_t k_t = Hacl_Impl_SHA2_Generic_k384_512[(uint32_t)16U * i0 + i];
-      uint64_t ws_t = ws[i];
-      uint64_t a0 = hash[0U];
-      uint64_t b0 = hash[1U];
-      uint64_t c0 = hash[2U];
-      uint64_t d0 = hash[3U];
-      uint64_t e0 = hash[4U];
-      uint64_t f0 = hash[5U];
-      uint64_t g0 = hash[6U];
-      uint64_t h02 = hash[7U];
-      uint64_t k_e_t = k_t;
-      uint64_t
-      t1 =
-        h02
-        +
-          ((e0 << (uint32_t)50U | e0 >> (uint32_t)14U)
-          ^
-            ((e0 << (uint32_t)46U | e0 >> (uint32_t)18U)
-            ^ (e0 << (uint32_t)23U | e0 >> (uint32_t)41U)))
-        + ((e0 & f0) ^ (~e0 & g0))
-        + k_e_t
-        + ws_t;
-      uint64_t
-      t2 =
-        ((a0 << (uint32_t)36U | a0 >> (uint32_t)28U)
-        ^
-          ((a0 << (uint32_t)30U | a0 >> (uint32_t)34U)
-          ^ (a0 << (uint32_t)25U | a0 >> (uint32_t)39U)))
-        + ((a0 & b0) ^ ((a0 & c0) ^ (b0 & c0)));
-      uint64_t a1 = t1 + t2;
-      uint64_t b1 = a0;
-      uint64_t c1 = b0;
-      uint64_t d1 = c0;
-      uint64_t e1 = d0 + t1;
-      uint64_t f1 = e0;
-      uint64_t g1 = f0;
-      uint64_t h12 = g0;
-      hash[0U] = a1;
-      hash[1U] = b1;
-      hash[2U] = c1;
-      hash[3U] = d1;
-      hash[4U] = e1;
-      hash[5U] = f1;
-      hash[6U] = g1;
-      hash[7U] = h12;);
-    if (i0 < (uint32_t)4U)
-    {
-      KRML_MAYBE_FOR16(i,
-        (uint32_t)0U,
-        (uint32_t)16U,
-        (uint32_t)1U,
-        uint64_t t16 = ws[i];
-        uint64_t t15 = ws[(i + (uint32_t)1U) % (uint32_t)16U];
-        uint64_t t7 = ws[(i + (uint32_t)9U) % (uint32_t)16U];
-        uint64_t t2 = ws[(i + (uint32_t)14U) % (uint32_t)16U];
-        uint64_t
-        s1 =
-          (t2 << (uint32_t)45U | t2 >> (uint32_t)19U)
-          ^ ((t2 << (uint32_t)3U | t2 >> (uint32_t)61U) ^ t2 >> (uint32_t)6U);
-        uint64_t
-        s0 =
-          (t15 << (uint32_t)63U | t15 >> (uint32_t)1U)
-          ^ ((t15 << (uint32_t)56U | t15 >> (uint32_t)8U) ^ t15 >> (uint32_t)7U);
-        ws[i] = s1 + t7 + s0 + t16;);
-    });
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    uint64_t *os = hash;
-    uint64_t x = hash[i] + hash_old[i];
-    os[i] = x;);
-}
-
-static inline void sha512_update_nblocks(uint32_t len, uint8_t *b, uint64_t *st)
-{
-  uint32_t blocks = len / (uint32_t)128U;
-  for (uint32_t i = (uint32_t)0U; i < blocks; i++)
-  {
-    uint8_t *b0 = b;
-    uint8_t *mb = b0 + i * (uint32_t)128U;
-    sha512_update(mb, st);
-  }
-}
-
-static inline void
-sha512_update_last(FStar_UInt128_uint128 totlen, uint32_t len, uint8_t *b, uint64_t *hash)
-{
-  uint32_t blocks;
-  if (len + (uint32_t)16U + (uint32_t)1U <= (uint32_t)128U)
-  {
-    blocks = (uint32_t)1U;
-  }
-  else
-  {
-    blocks = (uint32_t)2U;
-  }
-  uint32_t fin = blocks * (uint32_t)128U;
-  uint8_t last[256U] = { 0U };
-  uint8_t totlen_buf[16U] = { 0U };
-  FStar_UInt128_uint128 total_len_bits = FStar_UInt128_shift_left(totlen, (uint32_t)3U);
-  store128_be(totlen_buf, total_len_bits);
-  uint8_t *b0 = b;
-  memcpy(last, b0, len * sizeof (uint8_t));
-  last[len] = (uint8_t)0x80U;
-  memcpy(last + fin - (uint32_t)16U, totlen_buf, (uint32_t)16U * sizeof (uint8_t));
-  uint8_t *last00 = last;
-  uint8_t *last10 = last + (uint32_t)128U;
-  uint8_t *l0 = last00;
-  uint8_t *l1 = last10;
-  uint8_t *lb0 = l0;
-  uint8_t *lb1 = l1;
-  uint8_t *last0 = lb0;
-  uint8_t *last1 = lb1;
-  sha512_update(last0, hash);
-  if (blocks > (uint32_t)1U)
-  {
-    sha512_update(last1, hash);
-    return;
-  }
-}
-
-static inline void sha512_finish(uint64_t *st, uint8_t *h)
-{
-  uint8_t hbuf[64U] = { 0U };
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    store64_be(hbuf + i * (uint32_t)8U, st[i]););
-  memcpy(h, hbuf, (uint32_t)64U * sizeof (uint8_t));
-}
-
-static inline void sha384_init(uint64_t *hash)
-{
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    uint64_t *os = hash;
-    uint64_t x = Hacl_Impl_SHA2_Generic_h384[i];
-    os[i] = x;);
-}
-
-static inline void sha384_update_nblocks(uint32_t len, uint8_t *b, uint64_t *st)
-{
-  sha512_update_nblocks(len, b, st);
-}
-
-static void
-sha384_update_last(FStar_UInt128_uint128 totlen, uint32_t len, uint8_t *b, uint64_t *st)
-{
-  sha512_update_last(totlen, len, b, st);
-}
-
-static inline void sha384_finish(uint64_t *st, uint8_t *h)
-{
-  uint8_t hbuf[64U] = { 0U };
-  KRML_MAYBE_FOR8(i,
-    (uint32_t)0U,
-    (uint32_t)8U,
-    (uint32_t)1U,
-    store64_be(hbuf + i * (uint32_t)8U, st[i]););
-  memcpy(h, hbuf, (uint32_t)48U * sizeof (uint8_t));
-}
-
-/**
-Allocate initial state for the SHA2_256 hash. The state is to be freed by
-calling `free_256`.
-*/
-Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_256(void)
-{
-  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
-  uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint32_t));
-  Hacl_Streaming_MD_state_32
-  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  Hacl_Streaming_MD_state_32
-  *p = (Hacl_Streaming_MD_state_32 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_32));
-  p[0U] = s;
-  sha256_init(block_state);
-  return p;
-}
-
-/**
-Copies the state passed as argument into a newly allocated state (deep copy).
-The state is to be freed by calling `free_256`. Cloning the state this way is
-useful, for instance, if your control-flow diverges and you need to feed
-more (different) data into the hash in each branch.
-*/
-Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_copy_256(Hacl_Streaming_MD_state_32 *s0)
-{
-  Hacl_Streaming_MD_state_32 scrut = *s0;
-  uint32_t *block_state0 = scrut.block_state;
-  uint8_t *buf0 = scrut.buf;
-  uint64_t total_len0 = scrut.total_len;
-  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
-  memcpy(buf, buf0, (uint32_t)64U * sizeof (uint8_t));
-  uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint32_t));
-  memcpy(block_state, block_state0, (uint32_t)8U * sizeof (uint32_t));
-  Hacl_Streaming_MD_state_32
-  s = { .block_state = block_state, .buf = buf, .total_len = total_len0 };
-  Hacl_Streaming_MD_state_32
-  *p = (Hacl_Streaming_MD_state_32 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_32));
-  p[0U] = s;
-  return p;
-}
-
-/**
-Reset an existing state to the initial hash state with empty data.
-*/
-void Hacl_Streaming_SHA2_init_256(Hacl_Streaming_MD_state_32 *s)
-{
-  Hacl_Streaming_MD_state_32 scrut = *s;
-  uint8_t *buf = scrut.buf;
-  uint32_t *block_state = scrut.block_state;
-  sha256_init(block_state);
-  Hacl_Streaming_MD_state_32
-  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  s[0U] = tmp;
-}
-
-static inline uint32_t
-update_224_256(Hacl_Streaming_MD_state_32 *p, uint8_t *data, uint32_t len)
-{
-  Hacl_Streaming_MD_state_32 s = *p;
-  uint64_t total_len = s.total_len;
-  if ((uint64_t)len > (uint64_t)2305843009213693951U - total_len)
-  {
-    return (uint32_t)1U;
-  }
-  uint32_t sz;
-  if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
-  {
-    sz = (uint32_t)64U;
-  }
-  else
-  {
-    sz = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
-  }
-  if (len <= (uint32_t)64U - sz)
-  {
-    Hacl_Streaming_MD_state_32 s1 = *p;
-    uint32_t *block_state1 = s1.block_state;
-    uint8_t *buf = s1.buf;
-    uint64_t total_len1 = s1.total_len;
-    uint32_t sz1;
-    if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
-    {
-      sz1 = (uint32_t)64U;
-    }
-    else
-    {
-      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
-    }
-    uint8_t *buf2 = buf + sz1;
-    memcpy(buf2, data, len * sizeof (uint8_t));
-    uint64_t total_len2 = total_len1 + (uint64_t)len;
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_32){
-          .block_state = block_state1,
-          .buf = buf,
-          .total_len = total_len2
-        }
-      );
-  }
-  else if (sz == (uint32_t)0U)
-  {
-    Hacl_Streaming_MD_state_32 s1 = *p;
-    uint32_t *block_state1 = s1.block_state;
-    uint8_t *buf = s1.buf;
-    uint64_t total_len1 = s1.total_len;
-    uint32_t sz1;
-    if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
-    {
-      sz1 = (uint32_t)64U;
-    }
-    else
-    {
-      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
-    }
-    if (!(sz1 == (uint32_t)0U))
-    {
-      sha256_update_nblocks((uint32_t)64U, buf, block_state1);
-    }
-    uint32_t ite;
-    if ((uint64_t)len % (uint64_t)(uint32_t)64U == (uint64_t)0U && (uint64_t)len > (uint64_t)0U)
-    {
-      ite = (uint32_t)64U;
-    }
-    else
-    {
-      ite = (uint32_t)((uint64_t)len % (uint64_t)(uint32_t)64U);
-    }
-    uint32_t n_blocks = (len - ite) / (uint32_t)64U;
-    uint32_t data1_len = n_blocks * (uint32_t)64U;
-    uint32_t data2_len = len - data1_len;
-    uint8_t *data1 = data;
-    uint8_t *data2 = data + data1_len;
-    sha256_update_nblocks(data1_len, data1, block_state1);
-    uint8_t *dst = buf;
-    memcpy(dst, data2, data2_len * sizeof (uint8_t));
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_32){
-          .block_state = block_state1,
-          .buf = buf,
-          .total_len = total_len1 + (uint64_t)len
-        }
-      );
-  }
-  else
-  {
-    uint32_t diff = (uint32_t)64U - sz;
-    uint8_t *data1 = data;
-    uint8_t *data2 = data + diff;
-    Hacl_Streaming_MD_state_32 s1 = *p;
-    uint32_t *block_state10 = s1.block_state;
-    uint8_t *buf0 = s1.buf;
-    uint64_t total_len10 = s1.total_len;
-    uint32_t sz10;
-    if (total_len10 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len10 > (uint64_t)0U)
-    {
-      sz10 = (uint32_t)64U;
-    }
-    else
-    {
-      sz10 = (uint32_t)(total_len10 % (uint64_t)(uint32_t)64U);
-    }
-    uint8_t *buf2 = buf0 + sz10;
-    memcpy(buf2, data1, diff * sizeof (uint8_t));
-    uint64_t total_len2 = total_len10 + (uint64_t)diff;
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_32){
-          .block_state = block_state10,
-          .buf = buf0,
-          .total_len = total_len2
-        }
-      );
-    Hacl_Streaming_MD_state_32 s10 = *p;
-    uint32_t *block_state1 = s10.block_state;
-    uint8_t *buf = s10.buf;
-    uint64_t total_len1 = s10.total_len;
-    uint32_t sz1;
-    if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
-    {
-      sz1 = (uint32_t)64U;
-    }
-    else
-    {
-      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
-    }
-    if (!(sz1 == (uint32_t)0U))
-    {
-      sha256_update_nblocks((uint32_t)64U, buf, block_state1);
-    }
-    uint32_t ite;
-    if
-    (
-      (uint64_t)(len - diff)
-      % (uint64_t)(uint32_t)64U
-      == (uint64_t)0U
-      && (uint64_t)(len - diff) > (uint64_t)0U
-    )
-    {
-      ite = (uint32_t)64U;
-    }
-    else
-    {
-      ite = (uint32_t)((uint64_t)(len - diff) % (uint64_t)(uint32_t)64U);
-    }
-    uint32_t n_blocks = (len - diff - ite) / (uint32_t)64U;
-    uint32_t data1_len = n_blocks * (uint32_t)64U;
-    uint32_t data2_len = len - diff - data1_len;
-    uint8_t *data11 = data2;
-    uint8_t *data21 = data2 + data1_len;
-    sha256_update_nblocks(data1_len, data11, block_state1);
-    uint8_t *dst = buf;
-    memcpy(dst, data21, data2_len * sizeof (uint8_t));
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_32){
-          .block_state = block_state1,
-          .buf = buf,
-          .total_len = total_len1 + (uint64_t)(len - diff)
-        }
-      );
-  }
-  return (uint32_t)0U;
-}
-
-/**
-Feed an arbitrary amount of data into the hash. This function returns 0 for
-success, or 1 if the combined length of all of the data passed to `update_256`
-(since the last call to `init_256`) exceeds 2^61-1 bytes.
-
-This function is identical to the update function for SHA2_224.
-*/
-uint32_t
-Hacl_Streaming_SHA2_update_256(
-  Hacl_Streaming_MD_state_32 *p,
-  uint8_t *input,
-  uint32_t input_len
-)
-{
-  return update_224_256(p, input, input_len);
-}
-
-/**
-Write the resulting hash into `dst`, an array of 32 bytes. The state remains
-valid after a call to `finish_256`, meaning the user may feed more data into
-the hash via `update_256`. (The finish_256 function operates on an internal copy of
-the state and therefore does not invalidate the client-held state `p`.)
-*/
-void Hacl_Streaming_SHA2_finish_256(Hacl_Streaming_MD_state_32 *p, uint8_t *dst)
-{
-  Hacl_Streaming_MD_state_32 scrut = *p;
-  uint32_t *block_state = scrut.block_state;
-  uint8_t *buf_ = scrut.buf;
-  uint64_t total_len = scrut.total_len;
-  uint32_t r;
-  if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
-  {
-    r = (uint32_t)64U;
-  }
-  else
-  {
-    r = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
-  }
-  uint8_t *buf_1 = buf_;
-  uint32_t tmp_block_state[8U] = { 0U };
-  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint32_t));
-  uint32_t ite;
-  if (r % (uint32_t)64U == (uint32_t)0U && r > (uint32_t)0U)
-  {
-    ite = (uint32_t)64U;
-  }
-  else
-  {
-    ite = r % (uint32_t)64U;
-  }
-  uint8_t *buf_last = buf_1 + r - ite;
-  uint8_t *buf_multi = buf_1;
-  sha256_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
-  uint64_t prev_len_last = total_len - (uint64_t)r;
-  sha256_update_last(prev_len_last + (uint64_t)r, r, buf_last, tmp_block_state);
-  sha256_finish(tmp_block_state, dst);
-}
-
-/**
-Free a state allocated with `create_in_256`.
-
-This function is identical to the free function for SHA2_224.
-*/
-void Hacl_Streaming_SHA2_free_256(Hacl_Streaming_MD_state_32 *s)
-{
-  Hacl_Streaming_MD_state_32 scrut = *s;
-  uint8_t *buf = scrut.buf;
-  uint32_t *block_state = scrut.block_state;
-  KRML_HOST_FREE(block_state);
-  KRML_HOST_FREE(buf);
-  KRML_HOST_FREE(s);
-}
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 32 bytes.
-*/
-void Hacl_Streaming_SHA2_sha256(uint8_t *input, uint32_t input_len, uint8_t *dst)
-{
-  uint8_t *ib = input;
-  uint8_t *rb = dst;
-  uint32_t st[8U] = { 0U };
-  sha256_init(st);
-  uint32_t rem = input_len % (uint32_t)64U;
-  uint64_t len_ = (uint64_t)input_len;
-  sha256_update_nblocks(input_len, ib, st);
-  uint32_t rem1 = input_len % (uint32_t)64U;
-  uint8_t *b0 = ib;
-  uint8_t *lb = b0 + input_len - rem1;
-  sha256_update_last(len_, rem, lb, st);
-  sha256_finish(st, rb);
-}
-
-Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_224(void)
-{
-  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
-  uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint32_t));
-  Hacl_Streaming_MD_state_32
-  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  Hacl_Streaming_MD_state_32
-  *p = (Hacl_Streaming_MD_state_32 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_32));
-  p[0U] = s;
-  sha224_init(block_state);
-  return p;
-}
-
-void Hacl_Streaming_SHA2_init_224(Hacl_Streaming_MD_state_32 *s)
-{
-  Hacl_Streaming_MD_state_32 scrut = *s;
-  uint8_t *buf = scrut.buf;
-  uint32_t *block_state = scrut.block_state;
-  sha224_init(block_state);
-  Hacl_Streaming_MD_state_32
-  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  s[0U] = tmp;
-}
-
-uint32_t
-Hacl_Streaming_SHA2_update_224(
-  Hacl_Streaming_MD_state_32 *p,
-  uint8_t *input,
-  uint32_t input_len
-)
-{
-  return update_224_256(p, input, input_len);
-}
-
-/**
-Write the resulting hash into `dst`, an array of 28 bytes. The state remains
-valid after a call to `finish_224`, meaning the user may feed more data into
-the hash via `update_224`.
-*/
-void Hacl_Streaming_SHA2_finish_224(Hacl_Streaming_MD_state_32 *p, uint8_t *dst)
-{
-  Hacl_Streaming_MD_state_32 scrut = *p;
-  uint32_t *block_state = scrut.block_state;
-  uint8_t *buf_ = scrut.buf;
-  uint64_t total_len = scrut.total_len;
-  uint32_t r;
-  if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
-  {
-    r = (uint32_t)64U;
-  }
-  else
-  {
-    r = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
-  }
-  uint8_t *buf_1 = buf_;
-  uint32_t tmp_block_state[8U] = { 0U };
-  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint32_t));
-  uint32_t ite;
-  if (r % (uint32_t)64U == (uint32_t)0U && r > (uint32_t)0U)
-  {
-    ite = (uint32_t)64U;
-  }
-  else
-  {
-    ite = r % (uint32_t)64U;
-  }
-  uint8_t *buf_last = buf_1 + r - ite;
-  uint8_t *buf_multi = buf_1;
-  sha224_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
-  uint64_t prev_len_last = total_len - (uint64_t)r;
-  sha224_update_last(prev_len_last + (uint64_t)r, r, buf_last, tmp_block_state);
-  sha224_finish(tmp_block_state, dst);
-}
-
-void Hacl_Streaming_SHA2_free_224(Hacl_Streaming_MD_state_32 *p)
-{
-  Hacl_Streaming_SHA2_free_256(p);
-}
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 28 bytes.
-*/
-void Hacl_Streaming_SHA2_sha224(uint8_t *input, uint32_t input_len, uint8_t *dst)
-{
-  uint8_t *ib = input;
-  uint8_t *rb = dst;
-  uint32_t st[8U] = { 0U };
-  sha224_init(st);
-  uint32_t rem = input_len % (uint32_t)64U;
-  uint64_t len_ = (uint64_t)input_len;
-  sha224_update_nblocks(input_len, ib, st);
-  uint32_t rem1 = input_len % (uint32_t)64U;
-  uint8_t *b0 = ib;
-  uint8_t *lb = b0 + input_len - rem1;
-  sha224_update_last(len_, rem, lb, st);
-  sha224_finish(st, rb);
-}
-
-Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_512(void)
-{
-  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)128U, sizeof (uint8_t));
-  uint64_t *block_state = (uint64_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint64_t));
-  Hacl_Streaming_MD_state_64
-  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  Hacl_Streaming_MD_state_64
-  *p = (Hacl_Streaming_MD_state_64 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_64));
-  p[0U] = s;
-  Hacl_SHA2_Scalar32_sha512_init(block_state);
-  return p;
-}
-
-/**
-Copies the state passed as argument into a newly allocated state (deep copy).
-The state is to be freed by calling `free_512`. Cloning the state this way is
-useful, for instance, if your control-flow diverges and you need to feed
-more (different) data into the hash in each branch.
-*/
-Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_copy_512(Hacl_Streaming_MD_state_64 *s0)
-{
-  Hacl_Streaming_MD_state_64 scrut = *s0;
-  uint64_t *block_state0 = scrut.block_state;
-  uint8_t *buf0 = scrut.buf;
-  uint64_t total_len0 = scrut.total_len;
-  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)128U, sizeof (uint8_t));
-  memcpy(buf, buf0, (uint32_t)128U * sizeof (uint8_t));
-  uint64_t *block_state = (uint64_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint64_t));
-  memcpy(block_state, block_state0, (uint32_t)8U * sizeof (uint64_t));
-  Hacl_Streaming_MD_state_64
-  s = { .block_state = block_state, .buf = buf, .total_len = total_len0 };
-  Hacl_Streaming_MD_state_64
-  *p = (Hacl_Streaming_MD_state_64 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_64));
-  p[0U] = s;
-  return p;
-}
-
-void Hacl_Streaming_SHA2_init_512(Hacl_Streaming_MD_state_64 *s)
-{
-  Hacl_Streaming_MD_state_64 scrut = *s;
-  uint8_t *buf = scrut.buf;
-  uint64_t *block_state = scrut.block_state;
-  Hacl_SHA2_Scalar32_sha512_init(block_state);
-  Hacl_Streaming_MD_state_64
-  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  s[0U] = tmp;
-}
-
-static inline uint32_t
-update_384_512(Hacl_Streaming_MD_state_64 *p, uint8_t *data, uint32_t len)
-{
-  Hacl_Streaming_MD_state_64 s = *p;
-  uint64_t total_len = s.total_len;
-  if ((uint64_t)len > (uint64_t)18446744073709551615U - total_len)
-  {
-    return (uint32_t)1U;
-  }
-  uint32_t sz;
-  if (total_len % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len > (uint64_t)0U)
-  {
-    sz = (uint32_t)128U;
-  }
-  else
-  {
-    sz = (uint32_t)(total_len % (uint64_t)(uint32_t)128U);
-  }
-  if (len <= (uint32_t)128U - sz)
-  {
-    Hacl_Streaming_MD_state_64 s1 = *p;
-    uint64_t *block_state1 = s1.block_state;
-    uint8_t *buf = s1.buf;
-    uint64_t total_len1 = s1.total_len;
-    uint32_t sz1;
-    if (total_len1 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len1 > (uint64_t)0U)
-    {
-      sz1 = (uint32_t)128U;
-    }
-    else
-    {
-      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)128U);
-    }
-    uint8_t *buf2 = buf + sz1;
-    memcpy(buf2, data, len * sizeof (uint8_t));
-    uint64_t total_len2 = total_len1 + (uint64_t)len;
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_64){
-          .block_state = block_state1,
-          .buf = buf,
-          .total_len = total_len2
-        }
-      );
-  }
-  else if (sz == (uint32_t)0U)
-  {
-    Hacl_Streaming_MD_state_64 s1 = *p;
-    uint64_t *block_state1 = s1.block_state;
-    uint8_t *buf = s1.buf;
-    uint64_t total_len1 = s1.total_len;
-    uint32_t sz1;
-    if (total_len1 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len1 > (uint64_t)0U)
-    {
-      sz1 = (uint32_t)128U;
-    }
-    else
-    {
-      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)128U);
-    }
-    if (!(sz1 == (uint32_t)0U))
-    {
-      sha512_update_nblocks((uint32_t)128U, buf, block_state1);
-    }
-    uint32_t ite;
-    if ((uint64_t)len % (uint64_t)(uint32_t)128U == (uint64_t)0U && (uint64_t)len > (uint64_t)0U)
-    {
-      ite = (uint32_t)128U;
-    }
-    else
-    {
-      ite = (uint32_t)((uint64_t)len % (uint64_t)(uint32_t)128U);
-    }
-    uint32_t n_blocks = (len - ite) / (uint32_t)128U;
-    uint32_t data1_len = n_blocks * (uint32_t)128U;
-    uint32_t data2_len = len - data1_len;
-    uint8_t *data1 = data;
-    uint8_t *data2 = data + data1_len;
-    sha512_update_nblocks(data1_len, data1, block_state1);
-    uint8_t *dst = buf;
-    memcpy(dst, data2, data2_len * sizeof (uint8_t));
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_64){
-          .block_state = block_state1,
-          .buf = buf,
-          .total_len = total_len1 + (uint64_t)len
-        }
-      );
-  }
-  else
-  {
-    uint32_t diff = (uint32_t)128U - sz;
-    uint8_t *data1 = data;
-    uint8_t *data2 = data + diff;
-    Hacl_Streaming_MD_state_64 s1 = *p;
-    uint64_t *block_state10 = s1.block_state;
-    uint8_t *buf0 = s1.buf;
-    uint64_t total_len10 = s1.total_len;
-    uint32_t sz10;
-    if (total_len10 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len10 > (uint64_t)0U)
-    {
-      sz10 = (uint32_t)128U;
-    }
-    else
-    {
-      sz10 = (uint32_t)(total_len10 % (uint64_t)(uint32_t)128U);
-    }
-    uint8_t *buf2 = buf0 + sz10;
-    memcpy(buf2, data1, diff * sizeof (uint8_t));
-    uint64_t total_len2 = total_len10 + (uint64_t)diff;
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_64){
-          .block_state = block_state10,
-          .buf = buf0,
-          .total_len = total_len2
-        }
-      );
-    Hacl_Streaming_MD_state_64 s10 = *p;
-    uint64_t *block_state1 = s10.block_state;
-    uint8_t *buf = s10.buf;
-    uint64_t total_len1 = s10.total_len;
-    uint32_t sz1;
-    if (total_len1 % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len1 > (uint64_t)0U)
-    {
-      sz1 = (uint32_t)128U;
-    }
-    else
-    {
-      sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)128U);
-    }
-    if (!(sz1 == (uint32_t)0U))
-    {
-      sha512_update_nblocks((uint32_t)128U, buf, block_state1);
-    }
-    uint32_t ite;
-    if
-    (
-      (uint64_t)(len - diff)
-      % (uint64_t)(uint32_t)128U
-      == (uint64_t)0U
-      && (uint64_t)(len - diff) > (uint64_t)0U
-    )
-    {
-      ite = (uint32_t)128U;
-    }
-    else
-    {
-      ite = (uint32_t)((uint64_t)(len - diff) % (uint64_t)(uint32_t)128U);
-    }
-    uint32_t n_blocks = (len - diff - ite) / (uint32_t)128U;
-    uint32_t data1_len = n_blocks * (uint32_t)128U;
-    uint32_t data2_len = len - diff - data1_len;
-    uint8_t *data11 = data2;
-    uint8_t *data21 = data2 + data1_len;
-    sha512_update_nblocks(data1_len, data11, block_state1);
-    uint8_t *dst = buf;
-    memcpy(dst, data21, data2_len * sizeof (uint8_t));
-    *p
-    =
-      (
-        (Hacl_Streaming_MD_state_64){
-          .block_state = block_state1,
-          .buf = buf,
-          .total_len = total_len1 + (uint64_t)(len - diff)
-        }
-      );
-  }
-  return (uint32_t)0U;
-}
-
-/**
-Feed an arbitrary amount of data into the hash. This function returns 0 for
-success, or 1 if the combined length of all of the data passed to `update_512`
-(since the last call to `init_512`) exceeds 2^125-1 bytes.
-
-This function is identical to the update function for SHA2_384.
-*/
-uint32_t
-Hacl_Streaming_SHA2_update_512(
-  Hacl_Streaming_MD_state_64 *p,
-  uint8_t *input,
-  uint32_t input_len
-)
-{
-  return update_384_512(p, input, input_len);
-}
-
-/**
-Write the resulting hash into `dst`, an array of 64 bytes. The state remains
-valid after a call to `finish_512`, meaning the user may feed more data into
-the hash via `update_512`. (The finish_512 function operates on an internal copy of
-the state and therefore does not invalidate the client-held state `p`.)
-*/
-void Hacl_Streaming_SHA2_finish_512(Hacl_Streaming_MD_state_64 *p, uint8_t *dst)
-{
-  Hacl_Streaming_MD_state_64 scrut = *p;
-  uint64_t *block_state = scrut.block_state;
-  uint8_t *buf_ = scrut.buf;
-  uint64_t total_len = scrut.total_len;
-  uint32_t r;
-  if (total_len % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len > (uint64_t)0U)
-  {
-    r = (uint32_t)128U;
-  }
-  else
-  {
-    r = (uint32_t)(total_len % (uint64_t)(uint32_t)128U);
-  }
-  uint8_t *buf_1 = buf_;
-  uint64_t tmp_block_state[8U] = { 0U };
-  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint64_t));
-  uint32_t ite;
-  if (r % (uint32_t)128U == (uint32_t)0U && r > (uint32_t)0U)
-  {
-    ite = (uint32_t)128U;
-  }
-  else
-  {
-    ite = r % (uint32_t)128U;
-  }
-  uint8_t *buf_last = buf_1 + r - ite;
-  uint8_t *buf_multi = buf_1;
-  sha512_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
-  uint64_t prev_len_last = total_len - (uint64_t)r;
-  sha512_update_last(FStar_UInt128_add(FStar_UInt128_uint64_to_uint128(prev_len_last),
-      FStar_UInt128_uint64_to_uint128((uint64_t)r)),
-    r,
-    buf_last,
-    tmp_block_state);
-  sha512_finish(tmp_block_state, dst);
-}
-
-/**
-Free a state allocated with `create_in_512`.
-
-This function is identical to the free function for SHA2_384.
-*/
-void Hacl_Streaming_SHA2_free_512(Hacl_Streaming_MD_state_64 *s)
-{
-  Hacl_Streaming_MD_state_64 scrut = *s;
-  uint8_t *buf = scrut.buf;
-  uint64_t *block_state = scrut.block_state;
-  KRML_HOST_FREE(block_state);
-  KRML_HOST_FREE(buf);
-  KRML_HOST_FREE(s);
-}
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 64 bytes.
-*/
-void Hacl_Streaming_SHA2_sha512(uint8_t *input, uint32_t input_len, uint8_t *dst)
-{
-  uint8_t *ib = input;
-  uint8_t *rb = dst;
-  uint64_t st[8U] = { 0U };
-  Hacl_SHA2_Scalar32_sha512_init(st);
-  uint32_t rem = input_len % (uint32_t)128U;
-  FStar_UInt128_uint128 len_ = FStar_UInt128_uint64_to_uint128((uint64_t)input_len);
-  sha512_update_nblocks(input_len, ib, st);
-  uint32_t rem1 = input_len % (uint32_t)128U;
-  uint8_t *b0 = ib;
-  uint8_t *lb = b0 + input_len - rem1;
-  sha512_update_last(len_, rem, lb, st);
-  sha512_finish(st, rb);
-}
-
-Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_384(void)
-{
-  uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)128U, sizeof (uint8_t));
-  uint64_t *block_state = (uint64_t *)KRML_HOST_CALLOC((uint32_t)8U, sizeof (uint64_t));
-  Hacl_Streaming_MD_state_64
-  s = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  Hacl_Streaming_MD_state_64
-  *p = (Hacl_Streaming_MD_state_64 *)KRML_HOST_MALLOC(sizeof (Hacl_Streaming_MD_state_64));
-  p[0U] = s;
-  sha384_init(block_state);
-  return p;
-}
-
-void Hacl_Streaming_SHA2_init_384(Hacl_Streaming_MD_state_64 *s)
-{
-  Hacl_Streaming_MD_state_64 scrut = *s;
-  uint8_t *buf = scrut.buf;
-  uint64_t *block_state = scrut.block_state;
-  sha384_init(block_state);
-  Hacl_Streaming_MD_state_64
-  tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
-  s[0U] = tmp;
-}
-
-uint32_t
-Hacl_Streaming_SHA2_update_384(
-  Hacl_Streaming_MD_state_64 *p,
-  uint8_t *input,
-  uint32_t input_len
-)
-{
-  return update_384_512(p, input, input_len);
-}
-
-/**
-Write the resulting hash into `dst`, an array of 48 bytes. The state remains
-valid after a call to `finish_384`, meaning the user may feed more data into
-the hash via `update_384`.
-*/
-void Hacl_Streaming_SHA2_finish_384(Hacl_Streaming_MD_state_64 *p, uint8_t *dst)
-{
-  Hacl_Streaming_MD_state_64 scrut = *p;
-  uint64_t *block_state = scrut.block_state;
-  uint8_t *buf_ = scrut.buf;
-  uint64_t total_len = scrut.total_len;
-  uint32_t r;
-  if (total_len % (uint64_t)(uint32_t)128U == (uint64_t)0U && total_len > (uint64_t)0U)
-  {
-    r = (uint32_t)128U;
-  }
-  else
-  {
-    r = (uint32_t)(total_len % (uint64_t)(uint32_t)128U);
-  }
-  uint8_t *buf_1 = buf_;
-  uint64_t tmp_block_state[8U] = { 0U };
-  memcpy(tmp_block_state, block_state, (uint32_t)8U * sizeof (uint64_t));
-  uint32_t ite;
-  if (r % (uint32_t)128U == (uint32_t)0U && r > (uint32_t)0U)
-  {
-    ite = (uint32_t)128U;
-  }
-  else
-  {
-    ite = r % (uint32_t)128U;
-  }
-  uint8_t *buf_last = buf_1 + r - ite;
-  uint8_t *buf_multi = buf_1;
-  sha384_update_nblocks((uint32_t)0U, buf_multi, tmp_block_state);
-  uint64_t prev_len_last = total_len - (uint64_t)r;
-  sha384_update_last(FStar_UInt128_add(FStar_UInt128_uint64_to_uint128(prev_len_last),
-      FStar_UInt128_uint64_to_uint128((uint64_t)r)),
-    r,
-    buf_last,
-    tmp_block_state);
-  sha384_finish(tmp_block_state, dst);
-}
-
-void Hacl_Streaming_SHA2_free_384(Hacl_Streaming_MD_state_64 *p)
-{
-  Hacl_Streaming_SHA2_free_512(p);
-}
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 48 bytes.
-*/
-void Hacl_Streaming_SHA2_sha384(uint8_t *input, uint32_t input_len, uint8_t *dst)
-{
-  uint8_t *ib = input;
-  uint8_t *rb = dst;
-  uint64_t st[8U] = { 0U };
-  sha384_init(st);
-  uint32_t rem = input_len % (uint32_t)128U;
-  FStar_UInt128_uint128 len_ = FStar_UInt128_uint64_to_uint128((uint64_t)input_len);
-  sha384_update_nblocks(input_len, ib, st);
-  uint32_t rem1 = input_len % (uint32_t)128U;
-  uint8_t *b0 = ib;
-  uint8_t *lb = b0 + input_len - rem1;
-  sha384_update_last(len_, rem, lb, st);
-  sha384_finish(st, rb);
-}
-
diff --git a/Modules/_hacl/Hacl_Streaming_SHA2.h b/Modules/_hacl/Hacl_Streaming_SHA2.h
deleted file mode 100644
index b58df4c4d121c9..00000000000000
--- a/Modules/_hacl/Hacl_Streaming_SHA2.h
+++ /dev/null
@@ -1,204 +0,0 @@
-/* MIT License
- *
- * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
- * Copyright (c) 2022-2023 HACL* Contributors
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-
-#ifndef __Hacl_Streaming_SHA2_H
-#define __Hacl_Streaming_SHA2_H
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-#include <string.h>
-#include "python_hacl_namespaces.h"
-#include "krml/types.h"
-#include "krml/lowstar_endianness.h"
-#include "krml/internal/target.h"
-
-#include "Hacl_Streaming_Types.h"
-
-
-typedef Hacl_Streaming_MD_state_32 Hacl_Streaming_SHA2_state_sha2_224;
-
-typedef Hacl_Streaming_MD_state_32 Hacl_Streaming_SHA2_state_sha2_256;
-
-typedef Hacl_Streaming_MD_state_64 Hacl_Streaming_SHA2_state_sha2_384;
-
-typedef Hacl_Streaming_MD_state_64 Hacl_Streaming_SHA2_state_sha2_512;
-
-/**
-Allocate initial state for the SHA2_256 hash. The state is to be freed by
-calling `free_256`.
-*/
-Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_256(void);
-
-/**
-Copies the state passed as argument into a newly allocated state (deep copy).
-The state is to be freed by calling `free_256`. Cloning the state this way is
-useful, for instance, if your control-flow diverges and you need to feed
-more (different) data into the hash in each branch.
-*/
-Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_copy_256(Hacl_Streaming_MD_state_32 *s0);
-
-/**
-Reset an existing state to the initial hash state with empty data.
-*/
-void Hacl_Streaming_SHA2_init_256(Hacl_Streaming_MD_state_32 *s);
-
-/**
-Feed an arbitrary amount of data into the hash. This function returns 0 for
-success, or 1 if the combined length of all of the data passed to `update_256`
-(since the last call to `init_256`) exceeds 2^61-1 bytes.
-
-This function is identical to the update function for SHA2_224.
-*/
-uint32_t
-Hacl_Streaming_SHA2_update_256(
-  Hacl_Streaming_MD_state_32 *p,
-  uint8_t *input,
-  uint32_t input_len
-);
-
-/**
-Write the resulting hash into `dst`, an array of 32 bytes. The state remains
-valid after a call to `finish_256`, meaning the user may feed more data into
-the hash via `update_256`. (The finish_256 function operates on an internal copy of
-the state and therefore does not invalidate the client-held state `p`.)
-*/
-void Hacl_Streaming_SHA2_finish_256(Hacl_Streaming_MD_state_32 *p, uint8_t *dst);
-
-/**
-Free a state allocated with `create_in_256`.
-
-This function is identical to the free function for SHA2_224.
-*/
-void Hacl_Streaming_SHA2_free_256(Hacl_Streaming_MD_state_32 *s);
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 32 bytes.
-*/
-void Hacl_Streaming_SHA2_sha256(uint8_t *input, uint32_t input_len, uint8_t *dst);
-
-Hacl_Streaming_MD_state_32 *Hacl_Streaming_SHA2_create_in_224(void);
-
-void Hacl_Streaming_SHA2_init_224(Hacl_Streaming_MD_state_32 *s);
-
-uint32_t
-Hacl_Streaming_SHA2_update_224(
-  Hacl_Streaming_MD_state_32 *p,
-  uint8_t *input,
-  uint32_t input_len
-);
-
-/**
-Write the resulting hash into `dst`, an array of 28 bytes. The state remains
-valid after a call to `finish_224`, meaning the user may feed more data into
-the hash via `update_224`.
-*/
-void Hacl_Streaming_SHA2_finish_224(Hacl_Streaming_MD_state_32 *p, uint8_t *dst);
-
-void Hacl_Streaming_SHA2_free_224(Hacl_Streaming_MD_state_32 *p);
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 28 bytes.
-*/
-void Hacl_Streaming_SHA2_sha224(uint8_t *input, uint32_t input_len, uint8_t *dst);
-
-Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_512(void);
-
-/**
-Copies the state passed as argument into a newly allocated state (deep copy).
-The state is to be freed by calling `free_512`. Cloning the state this way is
-useful, for instance, if your control-flow diverges and you need to feed
-more (different) data into the hash in each branch.
-*/
-Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_copy_512(Hacl_Streaming_MD_state_64 *s0);
-
-void Hacl_Streaming_SHA2_init_512(Hacl_Streaming_MD_state_64 *s);
-
-/**
-Feed an arbitrary amount of data into the hash. This function returns 0 for
-success, or 1 if the combined length of all of the data passed to `update_512`
-(since the last call to `init_512`) exceeds 2^125-1 bytes.
-
-This function is identical to the update function for SHA2_384.
-*/
-uint32_t
-Hacl_Streaming_SHA2_update_512(
-  Hacl_Streaming_MD_state_64 *p,
-  uint8_t *input,
-  uint32_t input_len
-);
-
-/**
-Write the resulting hash into `dst`, an array of 64 bytes. The state remains
-valid after a call to `finish_512`, meaning the user may feed more data into
-the hash via `update_512`. (The finish_512 function operates on an internal copy of
-the state and therefore does not invalidate the client-held state `p`.)
-*/
-void Hacl_Streaming_SHA2_finish_512(Hacl_Streaming_MD_state_64 *p, uint8_t *dst);
-
-/**
-Free a state allocated with `create_in_512`.
-
-This function is identical to the free function for SHA2_384.
-*/
-void Hacl_Streaming_SHA2_free_512(Hacl_Streaming_MD_state_64 *s);
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 64 bytes.
-*/
-void Hacl_Streaming_SHA2_sha512(uint8_t *input, uint32_t input_len, uint8_t *dst);
-
-Hacl_Streaming_MD_state_64 *Hacl_Streaming_SHA2_create_in_384(void);
-
-void Hacl_Streaming_SHA2_init_384(Hacl_Streaming_MD_state_64 *s);
-
-uint32_t
-Hacl_Streaming_SHA2_update_384(
-  Hacl_Streaming_MD_state_64 *p,
-  uint8_t *input,
-  uint32_t input_len
-);
-
-/**
-Write the resulting hash into `dst`, an array of 48 bytes. The state remains
-valid after a call to `finish_384`, meaning the user may feed more data into
-the hash via `update_384`.
-*/
-void Hacl_Streaming_SHA2_finish_384(Hacl_Streaming_MD_state_64 *p, uint8_t *dst);
-
-void Hacl_Streaming_SHA2_free_384(Hacl_Streaming_MD_state_64 *p);
-
-/**
-Hash `input`, of len `input_len`, into `dst`, an array of 48 bytes.
-*/
-void Hacl_Streaming_SHA2_sha384(uint8_t *input, uint32_t input_len, uint8_t *dst);
-
-#if defined(__cplusplus)
-}
-#endif
-
-#define __Hacl_Streaming_SHA2_H_DEFINED
-#endif
diff --git a/Modules/_hacl/Hacl_Streaming_Types.h b/Modules/_hacl/Hacl_Streaming_Types.h
index 8a60b707bc4958..15ef16ba6075a9 100644
--- a/Modules/_hacl/Hacl_Streaming_Types.h
+++ b/Modules/_hacl/Hacl_Streaming_Types.h
@@ -52,6 +52,13 @@ extern "C" {
 
 typedef uint8_t Spec_Hash_Definitions_hash_alg;
 
+#define Hacl_Streaming_Types_Success 0
+#define Hacl_Streaming_Types_InvalidAlgorithm 1
+#define Hacl_Streaming_Types_InvalidLength 2
+#define Hacl_Streaming_Types_MaximumLengthExceeded 3
+
+typedef uint8_t Hacl_Streaming_Types_error_code;
+
 typedef struct Hacl_Streaming_MD_state_32_s
 {
   uint32_t *block_state;
diff --git a/Modules/_hacl/internal/Hacl_Hash_SHA2.h b/Modules/_hacl/internal/Hacl_Hash_SHA2.h
new file mode 100644
index 00000000000000..851f7dc60c94c2
--- /dev/null
+++ b/Modules/_hacl/internal/Hacl_Hash_SHA2.h
@@ -0,0 +1,184 @@
+/* MIT License
+ *
+ * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
+ * Copyright (c) 2022-2023 HACL* Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#ifndef __internal_Hacl_Hash_SHA2_H
+#define __internal_Hacl_Hash_SHA2_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#include <string.h>
+#include "krml/types.h"
+#include "krml/lowstar_endianness.h"
+#include "krml/internal/target.h"
+
+
+#include "../Hacl_Hash_SHA2.h"
+
+static const
+uint32_t
+Hacl_Impl_SHA2_Generic_h224[8U] =
+  {
+    (uint32_t)0xc1059ed8U, (uint32_t)0x367cd507U, (uint32_t)0x3070dd17U, (uint32_t)0xf70e5939U,
+    (uint32_t)0xffc00b31U, (uint32_t)0x68581511U, (uint32_t)0x64f98fa7U, (uint32_t)0xbefa4fa4U
+  };
+
+static const
+uint32_t
+Hacl_Impl_SHA2_Generic_h256[8U] =
+  {
+    (uint32_t)0x6a09e667U, (uint32_t)0xbb67ae85U, (uint32_t)0x3c6ef372U, (uint32_t)0xa54ff53aU,
+    (uint32_t)0x510e527fU, (uint32_t)0x9b05688cU, (uint32_t)0x1f83d9abU, (uint32_t)0x5be0cd19U
+  };
+
+static const
+uint64_t
+Hacl_Impl_SHA2_Generic_h384[8U] =
+  {
+    (uint64_t)0xcbbb9d5dc1059ed8U, (uint64_t)0x629a292a367cd507U, (uint64_t)0x9159015a3070dd17U,
+    (uint64_t)0x152fecd8f70e5939U, (uint64_t)0x67332667ffc00b31U, (uint64_t)0x8eb44a8768581511U,
+    (uint64_t)0xdb0c2e0d64f98fa7U, (uint64_t)0x47b5481dbefa4fa4U
+  };
+
+static const
+uint64_t
+Hacl_Impl_SHA2_Generic_h512[8U] =
+  {
+    (uint64_t)0x6a09e667f3bcc908U, (uint64_t)0xbb67ae8584caa73bU, (uint64_t)0x3c6ef372fe94f82bU,
+    (uint64_t)0xa54ff53a5f1d36f1U, (uint64_t)0x510e527fade682d1U, (uint64_t)0x9b05688c2b3e6c1fU,
+    (uint64_t)0x1f83d9abfb41bd6bU, (uint64_t)0x5be0cd19137e2179U
+  };
+
+static const
+uint32_t
+Hacl_Impl_SHA2_Generic_k224_256[64U] =
+  {
+    (uint32_t)0x428a2f98U, (uint32_t)0x71374491U, (uint32_t)0xb5c0fbcfU, (uint32_t)0xe9b5dba5U,
+    (uint32_t)0x3956c25bU, (uint32_t)0x59f111f1U, (uint32_t)0x923f82a4U, (uint32_t)0xab1c5ed5U,
+    (uint32_t)0xd807aa98U, (uint32_t)0x12835b01U, (uint32_t)0x243185beU, (uint32_t)0x550c7dc3U,
+    (uint32_t)0x72be5d74U, (uint32_t)0x80deb1feU, (uint32_t)0x9bdc06a7U, (uint32_t)0xc19bf174U,
+    (uint32_t)0xe49b69c1U, (uint32_t)0xefbe4786U, (uint32_t)0x0fc19dc6U, (uint32_t)0x240ca1ccU,
+    (uint32_t)0x2de92c6fU, (uint32_t)0x4a7484aaU, (uint32_t)0x5cb0a9dcU, (uint32_t)0x76f988daU,
+    (uint32_t)0x983e5152U, (uint32_t)0xa831c66dU, (uint32_t)0xb00327c8U, (uint32_t)0xbf597fc7U,
+    (uint32_t)0xc6e00bf3U, (uint32_t)0xd5a79147U, (uint32_t)0x06ca6351U, (uint32_t)0x14292967U,
+    (uint32_t)0x27b70a85U, (uint32_t)0x2e1b2138U, (uint32_t)0x4d2c6dfcU, (uint32_t)0x53380d13U,
+    (uint32_t)0x650a7354U, (uint32_t)0x766a0abbU, (uint32_t)0x81c2c92eU, (uint32_t)0x92722c85U,
+    (uint32_t)0xa2bfe8a1U, (uint32_t)0xa81a664bU, (uint32_t)0xc24b8b70U, (uint32_t)0xc76c51a3U,
+    (uint32_t)0xd192e819U, (uint32_t)0xd6990624U, (uint32_t)0xf40e3585U, (uint32_t)0x106aa070U,
+    (uint32_t)0x19a4c116U, (uint32_t)0x1e376c08U, (uint32_t)0x2748774cU, (uint32_t)0x34b0bcb5U,
+    (uint32_t)0x391c0cb3U, (uint32_t)0x4ed8aa4aU, (uint32_t)0x5b9cca4fU, (uint32_t)0x682e6ff3U,
+    (uint32_t)0x748f82eeU, (uint32_t)0x78a5636fU, (uint32_t)0x84c87814U, (uint32_t)0x8cc70208U,
+    (uint32_t)0x90befffaU, (uint32_t)0xa4506cebU, (uint32_t)0xbef9a3f7U, (uint32_t)0xc67178f2U
+  };
+
+static const
+uint64_t
+Hacl_Impl_SHA2_Generic_k384_512[80U] =
+  {
+    (uint64_t)0x428a2f98d728ae22U, (uint64_t)0x7137449123ef65cdU, (uint64_t)0xb5c0fbcfec4d3b2fU,
+    (uint64_t)0xe9b5dba58189dbbcU, (uint64_t)0x3956c25bf348b538U, (uint64_t)0x59f111f1b605d019U,
+    (uint64_t)0x923f82a4af194f9bU, (uint64_t)0xab1c5ed5da6d8118U, (uint64_t)0xd807aa98a3030242U,
+    (uint64_t)0x12835b0145706fbeU, (uint64_t)0x243185be4ee4b28cU, (uint64_t)0x550c7dc3d5ffb4e2U,
+    (uint64_t)0x72be5d74f27b896fU, (uint64_t)0x80deb1fe3b1696b1U, (uint64_t)0x9bdc06a725c71235U,
+    (uint64_t)0xc19bf174cf692694U, (uint64_t)0xe49b69c19ef14ad2U, (uint64_t)0xefbe4786384f25e3U,
+    (uint64_t)0x0fc19dc68b8cd5b5U, (uint64_t)0x240ca1cc77ac9c65U, (uint64_t)0x2de92c6f592b0275U,
+    (uint64_t)0x4a7484aa6ea6e483U, (uint64_t)0x5cb0a9dcbd41fbd4U, (uint64_t)0x76f988da831153b5U,
+    (uint64_t)0x983e5152ee66dfabU, (uint64_t)0xa831c66d2db43210U, (uint64_t)0xb00327c898fb213fU,
+    (uint64_t)0xbf597fc7beef0ee4U, (uint64_t)0xc6e00bf33da88fc2U, (uint64_t)0xd5a79147930aa725U,
+    (uint64_t)0x06ca6351e003826fU, (uint64_t)0x142929670a0e6e70U, (uint64_t)0x27b70a8546d22ffcU,
+    (uint64_t)0x2e1b21385c26c926U, (uint64_t)0x4d2c6dfc5ac42aedU, (uint64_t)0x53380d139d95b3dfU,
+    (uint64_t)0x650a73548baf63deU, (uint64_t)0x766a0abb3c77b2a8U, (uint64_t)0x81c2c92e47edaee6U,
+    (uint64_t)0x92722c851482353bU, (uint64_t)0xa2bfe8a14cf10364U, (uint64_t)0xa81a664bbc423001U,
+    (uint64_t)0xc24b8b70d0f89791U, (uint64_t)0xc76c51a30654be30U, (uint64_t)0xd192e819d6ef5218U,
+    (uint64_t)0xd69906245565a910U, (uint64_t)0xf40e35855771202aU, (uint64_t)0x106aa07032bbd1b8U,
+    (uint64_t)0x19a4c116b8d2d0c8U, (uint64_t)0x1e376c085141ab53U, (uint64_t)0x2748774cdf8eeb99U,
+    (uint64_t)0x34b0bcb5e19b48a8U, (uint64_t)0x391c0cb3c5c95a63U, (uint64_t)0x4ed8aa4ae3418acbU,
+    (uint64_t)0x5b9cca4f7763e373U, (uint64_t)0x682e6ff3d6b2b8a3U, (uint64_t)0x748f82ee5defb2fcU,
+    (uint64_t)0x78a5636f43172f60U, (uint64_t)0x84c87814a1f0ab72U, (uint64_t)0x8cc702081a6439ecU,
+    (uint64_t)0x90befffa23631e28U, (uint64_t)0xa4506cebde82bde9U, (uint64_t)0xbef9a3f7b2c67915U,
+    (uint64_t)0xc67178f2e372532bU, (uint64_t)0xca273eceea26619cU, (uint64_t)0xd186b8c721c0c207U,
+    (uint64_t)0xeada7dd6cde0eb1eU, (uint64_t)0xf57d4f7fee6ed178U, (uint64_t)0x06f067aa72176fbaU,
+    (uint64_t)0x0a637dc5a2c898a6U, (uint64_t)0x113f9804bef90daeU, (uint64_t)0x1b710b35131c471bU,
+    (uint64_t)0x28db77f523047d84U, (uint64_t)0x32caab7b40c72493U, (uint64_t)0x3c9ebe0a15c9bebcU,
+    (uint64_t)0x431d67c49c100d4cU, (uint64_t)0x4cc5d4becb3e42b6U, (uint64_t)0x597f299cfc657e2aU,
+    (uint64_t)0x5fcb6fab3ad6faecU, (uint64_t)0x6c44198c4a475817U
+  };
+
+void Hacl_SHA2_Scalar32_sha256_init(uint32_t *hash);
+
+void Hacl_SHA2_Scalar32_sha256_update_nblocks(uint32_t len, uint8_t *b, uint32_t *st);
+
+void
+Hacl_SHA2_Scalar32_sha256_update_last(
+  uint64_t totlen,
+  uint32_t len,
+  uint8_t *b,
+  uint32_t *hash
+);
+
+void Hacl_SHA2_Scalar32_sha256_finish(uint32_t *st, uint8_t *h);
+
+void Hacl_SHA2_Scalar32_sha224_init(uint32_t *hash);
+
+void
+Hacl_SHA2_Scalar32_sha224_update_last(uint64_t totlen, uint32_t len, uint8_t *b, uint32_t *st);
+
+void Hacl_SHA2_Scalar32_sha224_finish(uint32_t *st, uint8_t *h);
+
+void Hacl_SHA2_Scalar32_sha512_init(uint64_t *hash);
+
+void Hacl_SHA2_Scalar32_sha512_update_nblocks(uint32_t len, uint8_t *b, uint64_t *st);
+
+void
+Hacl_SHA2_Scalar32_sha512_update_last(
+  FStar_UInt128_uint128 totlen,
+  uint32_t len,
+  uint8_t *b,
+  uint64_t *hash
+);
+
+void Hacl_SHA2_Scalar32_sha512_finish(uint64_t *st, uint8_t *h);
+
+void Hacl_SHA2_Scalar32_sha384_init(uint64_t *hash);
+
+void Hacl_SHA2_Scalar32_sha384_update_nblocks(uint32_t len, uint8_t *b, uint64_t *st);
+
+void
+Hacl_SHA2_Scalar32_sha384_update_last(
+  FStar_UInt128_uint128 totlen,
+  uint32_t len,
+  uint8_t *b,
+  uint64_t *st
+);
+
+void Hacl_SHA2_Scalar32_sha384_finish(uint64_t *st, uint8_t *h);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#define __internal_Hacl_Hash_SHA2_H_DEFINED
+#endif
diff --git a/Modules/_hacl/internal/Hacl_SHA2_Generic.h b/Modules/_hacl/internal/Hacl_SHA2_Generic.h
deleted file mode 100644
index 6ac47f3cf7ed36..00000000000000
--- a/Modules/_hacl/internal/Hacl_SHA2_Generic.h
+++ /dev/null
@@ -1,132 +0,0 @@
-/* MIT License
- *
- * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
- * Copyright (c) 2022-2023 HACL* Contributors
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-
-#ifndef __internal_Hacl_SHA2_Generic_H
-#define __internal_Hacl_SHA2_Generic_H
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-#include <string.h>
-#include "krml/types.h"
-#include "krml/lowstar_endianness.h"
-#include "krml/internal/target.h"
-
-static const
-uint32_t
-Hacl_Impl_SHA2_Generic_h224[8U] =
-  {
-    (uint32_t)0xc1059ed8U, (uint32_t)0x367cd507U, (uint32_t)0x3070dd17U, (uint32_t)0xf70e5939U,
-    (uint32_t)0xffc00b31U, (uint32_t)0x68581511U, (uint32_t)0x64f98fa7U, (uint32_t)0xbefa4fa4U
-  };
-
-static const
-uint32_t
-Hacl_Impl_SHA2_Generic_h256[8U] =
-  {
-    (uint32_t)0x6a09e667U, (uint32_t)0xbb67ae85U, (uint32_t)0x3c6ef372U, (uint32_t)0xa54ff53aU,
-    (uint32_t)0x510e527fU, (uint32_t)0x9b05688cU, (uint32_t)0x1f83d9abU, (uint32_t)0x5be0cd19U
-  };
-
-static const
-uint64_t
-Hacl_Impl_SHA2_Generic_h384[8U] =
-  {
-    (uint64_t)0xcbbb9d5dc1059ed8U, (uint64_t)0x629a292a367cd507U, (uint64_t)0x9159015a3070dd17U,
-    (uint64_t)0x152fecd8f70e5939U, (uint64_t)0x67332667ffc00b31U, (uint64_t)0x8eb44a8768581511U,
-    (uint64_t)0xdb0c2e0d64f98fa7U, (uint64_t)0x47b5481dbefa4fa4U
-  };
-
-static const
-uint64_t
-Hacl_Impl_SHA2_Generic_h512[8U] =
-  {
-    (uint64_t)0x6a09e667f3bcc908U, (uint64_t)0xbb67ae8584caa73bU, (uint64_t)0x3c6ef372fe94f82bU,
-    (uint64_t)0xa54ff53a5f1d36f1U, (uint64_t)0x510e527fade682d1U, (uint64_t)0x9b05688c2b3e6c1fU,
-    (uint64_t)0x1f83d9abfb41bd6bU, (uint64_t)0x5be0cd19137e2179U
-  };
-
-static const
-uint32_t
-Hacl_Impl_SHA2_Generic_k224_256[64U] =
-  {
-    (uint32_t)0x428a2f98U, (uint32_t)0x71374491U, (uint32_t)0xb5c0fbcfU, (uint32_t)0xe9b5dba5U,
-    (uint32_t)0x3956c25bU, (uint32_t)0x59f111f1U, (uint32_t)0x923f82a4U, (uint32_t)0xab1c5ed5U,
-    (uint32_t)0xd807aa98U, (uint32_t)0x12835b01U, (uint32_t)0x243185beU, (uint32_t)0x550c7dc3U,
-    (uint32_t)0x72be5d74U, (uint32_t)0x80deb1feU, (uint32_t)0x9bdc06a7U, (uint32_t)0xc19bf174U,
-    (uint32_t)0xe49b69c1U, (uint32_t)0xefbe4786U, (uint32_t)0x0fc19dc6U, (uint32_t)0x240ca1ccU,
-    (uint32_t)0x2de92c6fU, (uint32_t)0x4a7484aaU, (uint32_t)0x5cb0a9dcU, (uint32_t)0x76f988daU,
-    (uint32_t)0x983e5152U, (uint32_t)0xa831c66dU, (uint32_t)0xb00327c8U, (uint32_t)0xbf597fc7U,
-    (uint32_t)0xc6e00bf3U, (uint32_t)0xd5a79147U, (uint32_t)0x06ca6351U, (uint32_t)0x14292967U,
-    (uint32_t)0x27b70a85U, (uint32_t)0x2e1b2138U, (uint32_t)0x4d2c6dfcU, (uint32_t)0x53380d13U,
-    (uint32_t)0x650a7354U, (uint32_t)0x766a0abbU, (uint32_t)0x81c2c92eU, (uint32_t)0x92722c85U,
-    (uint32_t)0xa2bfe8a1U, (uint32_t)0xa81a664bU, (uint32_t)0xc24b8b70U, (uint32_t)0xc76c51a3U,
-    (uint32_t)0xd192e819U, (uint32_t)0xd6990624U, (uint32_t)0xf40e3585U, (uint32_t)0x106aa070U,
-    (uint32_t)0x19a4c116U, (uint32_t)0x1e376c08U, (uint32_t)0x2748774cU, (uint32_t)0x34b0bcb5U,
-    (uint32_t)0x391c0cb3U, (uint32_t)0x4ed8aa4aU, (uint32_t)0x5b9cca4fU, (uint32_t)0x682e6ff3U,
-    (uint32_t)0x748f82eeU, (uint32_t)0x78a5636fU, (uint32_t)0x84c87814U, (uint32_t)0x8cc70208U,
-    (uint32_t)0x90befffaU, (uint32_t)0xa4506cebU, (uint32_t)0xbef9a3f7U, (uint32_t)0xc67178f2U
-  };
-
-static const
-uint64_t
-Hacl_Impl_SHA2_Generic_k384_512[80U] =
-  {
-    (uint64_t)0x428a2f98d728ae22U, (uint64_t)0x7137449123ef65cdU, (uint64_t)0xb5c0fbcfec4d3b2fU,
-    (uint64_t)0xe9b5dba58189dbbcU, (uint64_t)0x3956c25bf348b538U, (uint64_t)0x59f111f1b605d019U,
-    (uint64_t)0x923f82a4af194f9bU, (uint64_t)0xab1c5ed5da6d8118U, (uint64_t)0xd807aa98a3030242U,
-    (uint64_t)0x12835b0145706fbeU, (uint64_t)0x243185be4ee4b28cU, (uint64_t)0x550c7dc3d5ffb4e2U,
-    (uint64_t)0x72be5d74f27b896fU, (uint64_t)0x80deb1fe3b1696b1U, (uint64_t)0x9bdc06a725c71235U,
-    (uint64_t)0xc19bf174cf692694U, (uint64_t)0xe49b69c19ef14ad2U, (uint64_t)0xefbe4786384f25e3U,
-    (uint64_t)0x0fc19dc68b8cd5b5U, (uint64_t)0x240ca1cc77ac9c65U, (uint64_t)0x2de92c6f592b0275U,
-    (uint64_t)0x4a7484aa6ea6e483U, (uint64_t)0x5cb0a9dcbd41fbd4U, (uint64_t)0x76f988da831153b5U,
-    (uint64_t)0x983e5152ee66dfabU, (uint64_t)0xa831c66d2db43210U, (uint64_t)0xb00327c898fb213fU,
-    (uint64_t)0xbf597fc7beef0ee4U, (uint64_t)0xc6e00bf33da88fc2U, (uint64_t)0xd5a79147930aa725U,
-    (uint64_t)0x06ca6351e003826fU, (uint64_t)0x142929670a0e6e70U, (uint64_t)0x27b70a8546d22ffcU,
-    (uint64_t)0x2e1b21385c26c926U, (uint64_t)0x4d2c6dfc5ac42aedU, (uint64_t)0x53380d139d95b3dfU,
-    (uint64_t)0x650a73548baf63deU, (uint64_t)0x766a0abb3c77b2a8U, (uint64_t)0x81c2c92e47edaee6U,
-    (uint64_t)0x92722c851482353bU, (uint64_t)0xa2bfe8a14cf10364U, (uint64_t)0xa81a664bbc423001U,
-    (uint64_t)0xc24b8b70d0f89791U, (uint64_t)0xc76c51a30654be30U, (uint64_t)0xd192e819d6ef5218U,
-    (uint64_t)0xd69906245565a910U, (uint64_t)0xf40e35855771202aU, (uint64_t)0x106aa07032bbd1b8U,
-    (uint64_t)0x19a4c116b8d2d0c8U, (uint64_t)0x1e376c085141ab53U, (uint64_t)0x2748774cdf8eeb99U,
-    (uint64_t)0x34b0bcb5e19b48a8U, (uint64_t)0x391c0cb3c5c95a63U, (uint64_t)0x4ed8aa4ae3418acbU,
-    (uint64_t)0x5b9cca4f7763e373U, (uint64_t)0x682e6ff3d6b2b8a3U, (uint64_t)0x748f82ee5defb2fcU,
-    (uint64_t)0x78a5636f43172f60U, (uint64_t)0x84c87814a1f0ab72U, (uint64_t)0x8cc702081a6439ecU,
-    (uint64_t)0x90befffa23631e28U, (uint64_t)0xa4506cebde82bde9U, (uint64_t)0xbef9a3f7b2c67915U,
-    (uint64_t)0xc67178f2e372532bU, (uint64_t)0xca273eceea26619cU, (uint64_t)0xd186b8c721c0c207U,
-    (uint64_t)0xeada7dd6cde0eb1eU, (uint64_t)0xf57d4f7fee6ed178U, (uint64_t)0x06f067aa72176fbaU,
-    (uint64_t)0x0a637dc5a2c898a6U, (uint64_t)0x113f9804bef90daeU, (uint64_t)0x1b710b35131c471bU,
-    (uint64_t)0x28db77f523047d84U, (uint64_t)0x32caab7b40c72493U, (uint64_t)0x3c9ebe0a15c9bebcU,
-    (uint64_t)0x431d67c49c100d4cU, (uint64_t)0x4cc5d4becb3e42b6U, (uint64_t)0x597f299cfc657e2aU,
-    (uint64_t)0x5fcb6fab3ad6faecU, (uint64_t)0x6c44198c4a475817U
-  };
-
-#if defined(__cplusplus)
-}
-#endif
-
-#define __internal_Hacl_SHA2_Generic_H_DEFINED
-#endif
diff --git a/Modules/_hacl/refresh.sh b/Modules/_hacl/refresh.sh
index d2ba05f30d860f..c1b3e37f3afb9d 100755
--- a/Modules/_hacl/refresh.sh
+++ b/Modules/_hacl/refresh.sh
@@ -22,7 +22,7 @@ fi
 
 # Update this when updating to a new version after verifying that the changes
 # the update brings in are good.
-expected_hacl_star_rev=b6903a3e6458000730c3d83174d4b08d6d3e2ece
+expected_hacl_star_rev=521af282fdf6d60227335120f18ae9309a4b8e8c
 
 hacl_dir="$(realpath "$1")"
 cd "$(dirname "$0")"
@@ -40,7 +40,7 @@ fi
 
 declare -a dist_files
 dist_files=(
-  Hacl_Streaming_SHA2.h
+  Hacl_Hash_SHA2.h
   Hacl_Streaming_Types.h
   Hacl_Hash_SHA1.h
   internal/Hacl_Hash_SHA1.h
@@ -48,8 +48,8 @@ dist_files=(
   Hacl_Hash_SHA3.h
   internal/Hacl_Hash_MD5.h
   internal/Hacl_Hash_SHA3.h
-  internal/Hacl_SHA2_Generic.h
-  Hacl_Streaming_SHA2.c
+  Hacl_Hash_SHA2.c
+  internal/Hacl_Hash_SHA2.h
   Hacl_Hash_SHA1.c
   Hacl_Hash_MD5.c
   Hacl_Hash_SHA3.c
@@ -126,14 +126,8 @@ $sed -i -z 's!\(extern\|typedef\)[^;]*;\n\n!!g' include/krml/FStar_UInt_8_16_32_
 # compilation, but this is not necessary.
 $sed -i 's!#include.*Hacl_Krmllib.h"!!g' "${all_files[@]}"
 
-# This header is useful for *other* algorithms that refer to SHA2, e.g. Ed25519
-# which needs to compute a digest of a message before signing it. Here, since no
-# other algorithm builds upon SHA2, this internal header is useless (and is not
-# included in $dist_files).
-$sed -i 's!#include.*internal/Hacl_Streaming_SHA2.h"!#include "Hacl_Streaming_SHA2.h"!g' "${all_files[@]}"
-
 # Use globally unique names for the Hacl_ C APIs to avoid linkage conflicts.
-$sed -i -z 's!#include <string.h>\n!#include <string.h>\n#include "python_hacl_namespaces.h"\n!' Hacl_Streaming_SHA2.h
+$sed -i -z 's!#include <string.h>\n!#include <string.h>\n#include "python_hacl_namespaces.h"\n!' Hacl_Hash_SHA2.h
 
 # Finally, we remove a bunch of ifdefs from target.h that are, again, useful in
 # the general case, but not exercised by the subset of HACL* that we vendor.
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index 99d0b72819137e..0e230f332ff6cb 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -22,12 +22,12 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
-
+#include <stdbool.h>
 #include "Python.h"
 #include "pycore_hashtable.h"
-#include "hashlib.h"
+#include "pycore_pyhash.h"        // _Py_HashBytes()
 #include "pycore_strhex.h"        // _Py_strhex()
+#include "hashlib.h"
 
 /* EVP is the preferred interface to hashing in OpenSSL */
 #include <openssl/evp.h>
@@ -227,13 +227,17 @@ get_hashlib_state(PyObject *module)
 typedef struct {
     PyObject_HEAD
     EVP_MD_CTX          *ctx;   /* OpenSSL message digest context */
-    PyThread_type_lock   lock;  /* OpenSSL context lock */
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;  /* OpenSSL context lock */
 } EVPobject;
 
 typedef struct {
     PyObject_HEAD
     HMAC_CTX *ctx;            /* OpenSSL hmac context */
-    PyThread_type_lock lock;  /* HMAC context lock */
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;  /* HMAC context lock */
 } HMACobject;
 
 #include "clinic/_hashopenssl.c.h"
@@ -379,14 +383,15 @@ py_digest_by_digestmod(PyObject *module, PyObject *digestmod, enum Py_hash_type
     } else {
         _hashlibstate *state = get_hashlib_state(module);
         // borrowed ref
-        name_obj = PyDict_GetItem(state->constructs, digestmod);
+        name_obj = PyDict_GetItemWithError(state->constructs, digestmod);
     }
     if (name_obj == NULL) {
-        _hashlibstate *state = get_hashlib_state(module);
-        PyErr_Clear();
-        PyErr_Format(
-            state->unsupported_digestmod_error,
-            "Unsupported digestmod %R", digestmod);
+        if (!PyErr_Occurred()) {
+            _hashlibstate *state = get_hashlib_state(module);
+            PyErr_Format(
+                state->unsupported_digestmod_error,
+                "Unsupported digestmod %R", digestmod);
+        }
         return NULL;
     }
 
@@ -410,8 +415,7 @@ newEVPobject(PyTypeObject *type)
     if (retval == NULL) {
         return NULL;
     }
-
-    retval->lock = NULL;
+    HASHLIB_INIT_MUTEX(retval);
 
     retval->ctx = EVP_MD_CTX_new();
     if (retval->ctx == NULL) {
@@ -449,8 +453,6 @@ static void
 EVP_dealloc(EVPobject *self)
 {
     PyTypeObject *tp = Py_TYPE(self);
-    if (self->lock != NULL)
-        PyThread_free_lock(self->lock);
     EVP_MD_CTX_free(self->ctx);
     PyObject_Free(self);
     Py_DECREF(tp);
@@ -578,16 +580,14 @@ EVP_update(EVPobject *self, PyObject *obj)
 
     GET_BUFFER_VIEW_OR_ERROUT(obj, &view);
 
-    if (self->lock == NULL && view.len >= HASHLIB_GIL_MINSIZE) {
-        self->lock = PyThread_allocate_lock();
-        /* fail? lock = NULL and we fail over to non-threaded code. */
+    if (!self->use_mutex && view.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
     }
-
-    if (self->lock != NULL) {
+    if (self->use_mutex) {
         Py_BEGIN_ALLOW_THREADS
-        PyThread_acquire_lock(self->lock, 1);
+        PyMutex_Lock(&self->mutex);
         result = EVP_hash(self, view.buf, view.len);
-        PyThread_release_lock(self->lock);
+        PyMutex_Unlock(&self->mutex);
         Py_END_ALLOW_THREADS
     } else {
         result = EVP_hash(self, view.buf, view.len);
@@ -896,6 +896,8 @@ py_evp_fromname(PyObject *module, const char *digestname, PyObject *data_obj,
 
     if (view.buf && view.len) {
         if (view.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
             Py_BEGIN_ALLOW_THREADS
             result = EVP_hash(self, view.buf, view.len);
             Py_END_ALLOW_THREADS
@@ -1534,7 +1536,7 @@ _hashlib_hmac_new_impl(PyObject *module, Py_buffer *key, PyObject *msg_obj,
     }
 
     self->ctx = ctx;
-    self->lock = NULL;
+    HASHLIB_INIT_MUTEX(self);
 
     if ((msg_obj != NULL) && (msg_obj != Py_None)) {
         if (!_hmac_update(self, msg_obj))
@@ -1576,16 +1578,14 @@ _hmac_update(HMACobject *self, PyObject *obj)
 
     GET_BUFFER_VIEW_OR_ERROR(obj, &view, return 0);
 
-    if (self->lock == NULL && view.len >= HASHLIB_GIL_MINSIZE) {
-        self->lock = PyThread_allocate_lock();
-        /* fail? lock = NULL and we fail over to non-threaded code. */
+    if (!self->use_mutex && view.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
     }
-
-    if (self->lock != NULL) {
+    if (self->use_mutex) {
         Py_BEGIN_ALLOW_THREADS
-        PyThread_acquire_lock(self->lock, 1);
+        PyMutex_Lock(&self->mutex);
         r = HMAC_Update(self->ctx, (const unsigned char*)view.buf, view.len);
-        PyThread_release_lock(self->lock);
+        PyMutex_Unlock(&self->mutex);
         Py_END_ALLOW_THREADS
     } else {
         r = HMAC_Update(self->ctx, (const unsigned char*)view.buf, view.len);
@@ -1627,7 +1627,7 @@ _hashlib_HMAC_copy_impl(HMACobject *self)
         return NULL;
     }
     retval->ctx = ctx;
-    retval->lock = NULL;
+    HASHLIB_INIT_MUTEX(retval);
 
     return (PyObject *)retval;
 }
@@ -1636,9 +1636,6 @@ static void
 _hmac_dealloc(HMACobject *self)
 {
     PyTypeObject *tp = Py_TYPE(self);
-    if (self->lock != NULL) {
-        PyThread_free_lock(self->lock);
-    }
     HMAC_CTX_free(self->ctx);
     PyObject_Free(self);
     Py_DECREF(tp);
@@ -1883,12 +1880,7 @@ hashlib_md_meth_names(PyObject *module)
         return -1;
     }
 
-    if (PyModule_AddObject(module, "openssl_md_meth_names", state.set) < 0) {
-        Py_DECREF(state.set);
-        return -1;
-    }
-
-    return 0;
+    return PyModule_Add(module, "openssl_md_meth_names", state.set);
 }
 
 /*[clinic input]
@@ -1982,9 +1974,6 @@ _hashlib_compare_digest_impl(PyObject *module, PyObject *a, PyObject *b)
 
     /* ASCII unicode string */
     if(PyUnicode_Check(a) && PyUnicode_Check(b)) {
-        if (PyUnicode_READY(a) == -1 || PyUnicode_READY(b) == -1) {
-            return NULL;
-        }
         if (!PyUnicode_IS_ASCII(a) || !PyUnicode_IS_ASCII(b)) {
             PyErr_SetString(PyExc_TypeError,
                             "comparing strings with non-ASCII characters is "
@@ -2187,7 +2176,6 @@ hashlib_init_constructors(PyObject *module)
      */
     PyModuleDef *mdef;
     PyMethodDef *fdef;
-    PyObject *proxy;
     PyObject *func, *name_obj;
     _hashlibstate *state = get_hashlib_state(module);
 
@@ -2222,17 +2210,8 @@ hashlib_init_constructors(PyObject *module)
         }
     }
 
-    proxy = PyDictProxy_New(state->constructs);
-    if (proxy == NULL) {
-        return -1;
-    }
-
-    int rc = PyModule_AddObjectRef(module, "_constructors", proxy);
-    Py_DECREF(proxy);
-    if (rc < 0) {
-        return -1;
-    }
-    return 0;
+    return PyModule_Add(module, "_constructors",
+                        PyDictProxy_New(state->constructs));
 }
 
 static int
diff --git a/Modules/_heapqmodule.c b/Modules/_heapqmodule.c
index 00285ae01f8574..9d4ec256ee9e3e 100644
--- a/Modules/_heapqmodule.c
+++ b/Modules/_heapqmodule.c
@@ -672,9 +672,7 @@ From all times, sorting has always been a Great Art! :-)\n");
 static int
 heapq_exec(PyObject *m)
 {
-    PyObject *about = PyUnicode_FromString(__about__);
-    if (PyModule_AddObject(m, "__about__", about) < 0) {
-        Py_DECREF(about);
+    if (PyModule_Add(m, "__about__", PyUnicode_FromString(__about__)) < 0) {
         return -1;
     }
     return 0;
diff --git a/Modules/_io/_iomodule.c b/Modules/_io/_iomodule.c
index 7b06c1bee5a832..173f5b55e5f732 100644
--- a/Modules/_io/_iomodule.c
+++ b/Modules/_io/_iomodule.c
@@ -7,11 +7,14 @@
     Mostly written by Amaury Forgeot d'Arc
 */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
-#include "_iomodule.h"
-#include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_long.h"          // _PyLong_Sign()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
+
+#include "_iomodule.h"
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
diff --git a/Modules/_io/bufferedio.c b/Modules/_io/bufferedio.c
index 6f291c34496064..679626863c385c 100644
--- a/Modules/_io/bufferedio.c
+++ b/Modules/_io/bufferedio.c
@@ -7,11 +7,13 @@
     Written by Amaury Forgeot d'Arc and Antoine Pitrou
 */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
-#include "pycore_call.h"          // _PyObject_CallNoArgs()
-#include "pycore_object.h"
-#include "structmember.h"         // PyMemberDef
+#include "pycore_bytesobject.h"         // _PyBytes_Join()
+#include "pycore_call.h"                // _PyObject_CallNoArgs()
+#include "pycore_object.h"              // _PyObject_GC_UNTRACK()
+#include "pycore_pyerrors.h"            // _Py_FatalErrorFormat()
+#include "pycore_pylifecycle.h"         // _Py_IsInterpreterFinalizing()
+
 #include "_iomodule.h"
 
 /*[clinic input]
@@ -80,6 +82,7 @@ _bufferediobase_readinto_generic(PyObject *self, Py_buffer *buffer, char readint
 }
 
 /*[clinic input]
+@critical_section
 _io._BufferedIOBase.readinto
     buffer: Py_buffer(accept={rwbuffer})
     /
@@ -87,12 +90,13 @@ _io._BufferedIOBase.readinto
 
 static PyObject *
 _io__BufferedIOBase_readinto_impl(PyObject *self, Py_buffer *buffer)
-/*[clinic end generated code: output=8c8cda6684af8038 input=00a6b9a38f29830a]*/
+/*[clinic end generated code: output=8c8cda6684af8038 input=5273d20db7f56e1a]*/
 {
     return _bufferediobase_readinto_generic(self, buffer, 0);
 }
 
 /*[clinic input]
+@critical_section
 _io._BufferedIOBase.readinto1
     buffer: Py_buffer(accept={rwbuffer})
     /
@@ -100,7 +104,7 @@ _io._BufferedIOBase.readinto1
 
 static PyObject *
 _io__BufferedIOBase_readinto1_impl(PyObject *self, Py_buffer *buffer)
-/*[clinic end generated code: output=358623e4fd2b69d3 input=ebad75b4aadfb9be]*/
+/*[clinic end generated code: output=358623e4fd2b69d3 input=d6eb723dedcee654]*/
 {
     return _bufferediobase_readinto_generic(self, buffer, 1);
 }
@@ -293,7 +297,8 @@ _enter_buffered_busy(buffered *self)
                      "reentrant call inside %R", self);
         return 0;
     }
-    relax_locking = _Py_IsFinalizing();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    relax_locking = _Py_IsInterpreterFinalizing(interp);
     Py_BEGIN_ALLOW_THREADS
     if (!relax_locking)
         st = PyThread_acquire_lock(self->lock, 1);
@@ -428,12 +433,13 @@ buffered_dealloc(buffered *self)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.__sizeof__
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered___sizeof___impl(buffered *self)
-/*[clinic end generated code: output=0231ef7f5053134e input=753c782d808d34df]*/
+/*[clinic end generated code: output=0231ef7f5053134e input=07a32d578073ea64]*/
 {
     size_t res = _PyObject_SIZE(Py_TYPE(self));
     if (self->buffer) {
@@ -485,12 +491,13 @@ _io__Buffered__dealloc_warn(buffered *self, PyObject *source)
 
 /* Flush and close */
 /*[clinic input]
+@critical_section
 _io._Buffered.flush as _io__Buffered_simple_flush
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_simple_flush_impl(buffered *self)
-/*[clinic end generated code: output=29ebb3820db1bdfd input=f33ef045e7250767]*/
+/*[clinic end generated code: output=29ebb3820db1bdfd input=5248cb84a65f80bd]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_CallMethodNoArgs(self->raw, &_Py_ID(flush));
@@ -510,20 +517,28 @@ buffered_closed(buffered *self)
     return closed;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_io._Buffered.closed
+[clinic start generated code]*/
+
 static PyObject *
-buffered_closed_get(buffered *self, void *context)
+_io__Buffered_closed_get_impl(buffered *self)
+/*[clinic end generated code: output=f08ce57290703a1a input=18eddefdfe4a3d2f]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_GetAttr(self->raw, &_Py_ID(closed));
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.close
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_close_impl(buffered *self)
-/*[clinic end generated code: output=7280b7b42033be0c input=d20b83d1ddd7d805]*/
+/*[clinic end generated code: output=7280b7b42033be0c input=56d95935b03fd326]*/
 {
     PyObject *res = NULL;
     int r;
@@ -550,17 +565,14 @@ _io__Buffered_close_impl(buffered *self)
     }
     /* flush() will most probably re-take the lock, so drop it first */
     LEAVE_BUFFERED(self)
-    res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
+    r = _PyFile_Flush((PyObject *)self);
     if (!ENTER_BUFFERED(self)) {
         return NULL;
     }
     PyObject *exc = NULL;
-    if (res == NULL) {
+    if (r < 0) {
         exc = PyErr_GetRaisedException();
     }
-    else {
-        Py_DECREF(res);
-    }
 
     res = PyObject_CallMethodNoArgs(self->raw, &_Py_ID(close));
 
@@ -583,19 +595,19 @@ _io__Buffered_close_impl(buffered *self)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.detach
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_detach_impl(buffered *self)
-/*[clinic end generated code: output=dd0fc057b8b779f7 input=482762a345cc9f44]*/
+/*[clinic end generated code: output=dd0fc057b8b779f7 input=d4ef1828a678be37]*/
 {
-    PyObject *raw, *res;
+    PyObject *raw;
     CHECK_INITIALIZED(self)
-    res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-    if (res == NULL)
+    if (_PyFile_Flush((PyObject *)self) < 0) {
         return NULL;
-    Py_DECREF(res);
+    }
     raw = self->raw;
     self->raw = NULL;
     self->detached = 1;
@@ -606,50 +618,68 @@ _io__Buffered_detach_impl(buffered *self)
 /* Inquiries */
 
 /*[clinic input]
+@critical_section
 _io._Buffered.seekable
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_seekable_impl(buffered *self)
-/*[clinic end generated code: output=90172abb5ceb6e8f input=7d35764f5fb5262b]*/
+/*[clinic end generated code: output=90172abb5ceb6e8f input=e3a4fc1d297b2fd3]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_CallMethodNoArgs(self->raw, &_Py_ID(seekable));
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.readable
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_readable_impl(buffered *self)
-/*[clinic end generated code: output=92afa07661ecb698 input=640619addb513b8b]*/
+/*[clinic end generated code: output=92afa07661ecb698 input=abe54107d59bca9a]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_CallMethodNoArgs(self->raw, &_Py_ID(readable));
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.writable
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_writable_impl(buffered *self)
-/*[clinic end generated code: output=4e3eee8d6f9d8552 input=b35ea396b2201554]*/
+/*[clinic end generated code: output=4e3eee8d6f9d8552 input=45eb76bf6a10e6f7]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_CallMethodNoArgs(self->raw, &_Py_ID(writable));
 }
 
+
+/*[clinic input]
+@critical_section
+@getter
+_io._Buffered.name
+[clinic start generated code]*/
+
 static PyObject *
-buffered_name_get(buffered *self, void *context)
+_io__Buffered_name_get_impl(buffered *self)
+/*[clinic end generated code: output=d2adf384051d3d10 input=6b84a0e6126f545e]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_GetAttr(self->raw, &_Py_ID(name));
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_io._Buffered.mode
+[clinic start generated code]*/
+
 static PyObject *
-buffered_mode_get(buffered *self, void *context)
+_io__Buffered_mode_get_impl(buffered *self)
+/*[clinic end generated code: output=0feb205748892fa4 input=0762d5e28542fd8c]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_GetAttr(self->raw, &_Py_ID(mode));
@@ -658,24 +688,26 @@ buffered_mode_get(buffered *self, void *context)
 /* Lower-level APIs */
 
 /*[clinic input]
+@critical_section
 _io._Buffered.fileno
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_fileno_impl(buffered *self)
-/*[clinic end generated code: output=b717648d58a95ee3 input=768ea30b3f6314a7]*/
+/*[clinic end generated code: output=b717648d58a95ee3 input=1c4fead777bae20a]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_CallMethodNoArgs(self->raw, &_Py_ID(fileno));
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.isatty
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_isatty_impl(buffered *self)
-/*[clinic end generated code: output=c20e55caae67baea input=9ea007b11559bee4]*/
+/*[clinic end generated code: output=c20e55caae67baea input=e53d182d7e490e3a]*/
 {
     CHECK_INITIALIZED(self)
     return PyObject_CallMethodNoArgs(self->raw, &_Py_ID(isatty));
@@ -881,12 +913,13 @@ buffered_flush_and_rewind_unlocked(buffered *self)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.flush
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_flush_impl(buffered *self)
-/*[clinic end generated code: output=da2674ef1ce71f3a input=fda63444697c6bf4]*/
+/*[clinic end generated code: output=da2674ef1ce71f3a input=6b30de9f083419c2]*/
 {
     PyObject *res;
 
@@ -902,6 +935,7 @@ _io__Buffered_flush_impl(buffered *self)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.peek
     size: Py_ssize_t = 0
     /
@@ -910,7 +944,7 @@ _io._Buffered.peek
 
 static PyObject *
 _io__Buffered_peek_impl(buffered *self, Py_ssize_t size)
-/*[clinic end generated code: output=ba7a097ca230102b input=37ffb97d06ff4adb]*/
+/*[clinic end generated code: output=ba7a097ca230102b input=56733376f926d982]*/
 {
     PyObject *res = NULL;
 
@@ -934,6 +968,7 @@ _io__Buffered_peek_impl(buffered *self, Py_ssize_t size)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.read
     size as n: Py_ssize_t(accept={int, NoneType}) = -1
     /
@@ -941,7 +976,7 @@ _io._Buffered.read
 
 static PyObject *
 _io__Buffered_read_impl(buffered *self, Py_ssize_t n)
-/*[clinic end generated code: output=f41c78bb15b9bbe9 input=7df81e82e08a68a2]*/
+/*[clinic end generated code: output=f41c78bb15b9bbe9 input=bdb4b0425b295472]*/
 {
     PyObject *res;
 
@@ -975,6 +1010,7 @@ _io__Buffered_read_impl(buffered *self, Py_ssize_t n)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.read1
     size as n: Py_ssize_t = -1
     /
@@ -982,7 +1018,7 @@ _io._Buffered.read1
 
 static PyObject *
 _io__Buffered_read1_impl(buffered *self, Py_ssize_t n)
-/*[clinic end generated code: output=bcc4fb4e54d103a3 input=7d22de9630b61774]*/
+/*[clinic end generated code: output=bcc4fb4e54d103a3 input=3d0ad241aa52b36c]*/
 {
     Py_ssize_t have, r;
     PyObject *res = NULL;
@@ -1111,6 +1147,7 @@ _buffered_readinto_generic(buffered *self, Py_buffer *buffer, char readinto1)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.readinto
     buffer: Py_buffer(accept={rwbuffer})
     /
@@ -1118,12 +1155,13 @@ _io._Buffered.readinto
 
 static PyObject *
 _io__Buffered_readinto_impl(buffered *self, Py_buffer *buffer)
-/*[clinic end generated code: output=bcb376580b1d8170 input=ed6b98b7a20a3008]*/
+/*[clinic end generated code: output=bcb376580b1d8170 input=777c33e7adaa2bcd]*/
 {
     return _buffered_readinto_generic(self, buffer, 0);
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.readinto1
     buffer: Py_buffer(accept={rwbuffer})
     /
@@ -1131,7 +1169,7 @@ _io._Buffered.readinto1
 
 static PyObject *
 _io__Buffered_readinto1_impl(buffered *self, Py_buffer *buffer)
-/*[clinic end generated code: output=6e5c6ac5868205d6 input=4455c5d55fdf1687]*/
+/*[clinic end generated code: output=6e5c6ac5868205d6 input=ef03cc5fc92a6895]*/
 {
     return _buffered_readinto_generic(self, buffer, 1);
 }
@@ -1246,6 +1284,7 @@ _buffered_readline(buffered *self, Py_ssize_t limit)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.readline
     size: Py_ssize_t(accept={int, NoneType}) = -1
     /
@@ -1253,7 +1292,7 @@ _io._Buffered.readline
 
 static PyObject *
 _io__Buffered_readline_impl(buffered *self, Py_ssize_t size)
-/*[clinic end generated code: output=24dd2aa6e33be83c input=673b6240e315ef8a]*/
+/*[clinic end generated code: output=24dd2aa6e33be83c input=e81ca5abd4280776]*/
 {
     CHECK_INITIALIZED(self)
     return _buffered_readline(self, size);
@@ -1261,12 +1300,13 @@ _io__Buffered_readline_impl(buffered *self, Py_ssize_t size)
 
 
 /*[clinic input]
+@critical_section
 _io._Buffered.tell
 [clinic start generated code]*/
 
 static PyObject *
 _io__Buffered_tell_impl(buffered *self)
-/*[clinic end generated code: output=386972ae84716c1e input=ad61e04a6b349573]*/
+/*[clinic end generated code: output=386972ae84716c1e input=ab12e67d8abcb42f]*/
 {
     Py_off_t pos;
 
@@ -1280,6 +1320,7 @@ _io__Buffered_tell_impl(buffered *self)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.seek
     target as targetobj: object
     whence: int = 0
@@ -1288,7 +1329,7 @@ _io._Buffered.seek
 
 static PyObject *
 _io__Buffered_seek_impl(buffered *self, PyObject *targetobj, int whence)
-/*[clinic end generated code: output=7ae0e8dc46efdefb input=a9c4920bfcba6163]*/
+/*[clinic end generated code: output=7ae0e8dc46efdefb input=b5a12be70e0ad07b]*/
 {
     Py_off_t target, n;
     PyObject *res = NULL;
@@ -1377,6 +1418,7 @@ _io__Buffered_seek_impl(buffered *self, PyObject *targetobj, int whence)
 }
 
 /*[clinic input]
+@critical_section
 _io._Buffered.truncate
     cls: defining_class
     pos: object = None
@@ -1385,7 +1427,7 @@ _io._Buffered.truncate
 
 static PyObject *
 _io__Buffered_truncate_impl(buffered *self, PyTypeObject *cls, PyObject *pos)
-/*[clinic end generated code: output=fe3882fbffe79f1a input=f5b737d97d76303f]*/
+/*[clinic end generated code: output=fe3882fbffe79f1a input=e3cbf794575bd794]*/
 {
     PyObject *res = NULL;
 
@@ -1461,7 +1503,7 @@ buffered_repr(buffered *self)
 {
     PyObject *nameobj, *res;
 
-    if (_PyObject_LookupAttr((PyObject *) self, &_Py_ID(name), &nameobj) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *) self, &_Py_ID(name), &nameobj) < 0) {
         if (!PyErr_ExceptionMatches(PyExc_ValueError)) {
             return NULL;
         }
@@ -1628,7 +1670,7 @@ _bufferedreader_read_all(buffered *self)
     }
     _bufferedreader_reset_buf(self);
 
-    if (_PyObject_LookupAttr(self->raw, &_Py_ID(readall), &readall) < 0) {
+    if (PyObject_GetOptionalAttr(self->raw, &_Py_ID(readall), &readall) < 0) {
         goto cleanup;
     }
     if (readall) {
@@ -1999,6 +2041,7 @@ _bufferedwriter_flush_unlocked(buffered *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.BufferedWriter.write
     buffer: Py_buffer
     /
@@ -2006,7 +2049,7 @@ _io.BufferedWriter.write
 
 static PyObject *
 _io_BufferedWriter_write_impl(buffered *self, Py_buffer *buffer)
-/*[clinic end generated code: output=7f8d1365759bfc6b input=dd87dd85fc7f8850]*/
+/*[clinic end generated code: output=7f8d1365759bfc6b input=6a9c041de0c337be]*/
 {
     PyObject *res = NULL;
     Py_ssize_t written, avail, remaining;
@@ -2423,13 +2466,6 @@ _io_BufferedRandom___init___impl(buffered *self, PyObject *raw,
 #include "clinic/bufferedio.c.h"
 #undef clinic_state
 
-static int
-bufferediobase_traverse(PyObject *self, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(self));
-    return 0;
-}
-
 static PyMethodDef bufferediobase_methods[] = {
     _IO__BUFFEREDIOBASE_DETACH_METHODDEF
     _IO__BUFFEREDIOBASE_READ_METHODDEF
@@ -2443,13 +2479,13 @@ static PyMethodDef bufferediobase_methods[] = {
 static PyType_Slot bufferediobase_slots[] = {
     {Py_tp_doc, (void *)bufferediobase_doc},
     {Py_tp_methods, bufferediobase_methods},
-    {Py_tp_traverse, bufferediobase_traverse},
     {0, NULL},
 };
 
+/* Do not set Py_TPFLAGS_HAVE_GC so that tp_traverse and tp_clear are inherited */
 PyType_Spec bufferediobase_spec = {
     .name = "_io._BufferedIOBase",
-    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC |
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
               Py_TPFLAGS_IMMUTABLETYPE),
     .slots = bufferediobase_slots,
 };
@@ -2482,17 +2518,17 @@ static PyMethodDef bufferedreader_methods[] = {
 };
 
 static PyMemberDef bufferedreader_members[] = {
-    {"raw", T_OBJECT, offsetof(buffered, raw), READONLY},
-    {"_finalizing", T_BOOL, offsetof(buffered, finalizing), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(buffered, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(buffered, dict), READONLY},
+    {"raw", _Py_T_OBJECT, offsetof(buffered, raw), Py_READONLY},
+    {"_finalizing", Py_T_BOOL, offsetof(buffered, finalizing), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(buffered, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(buffered, dict), Py_READONLY},
     {NULL}
 };
 
 static PyGetSetDef bufferedreader_getset[] = {
-    {"closed", (getter)buffered_closed_get, NULL, NULL},
-    {"name", (getter)buffered_name_get, NULL, NULL},
-    {"mode", (getter)buffered_mode_get, NULL, NULL},
+    _IO__BUFFERED_CLOSED_GETTERDEF
+    _IO__BUFFERED_NAME_GETTERDEF
+    _IO__BUFFERED_MODE_GETTERDEF
     {NULL}
 };
 
@@ -2542,17 +2578,17 @@ static PyMethodDef bufferedwriter_methods[] = {
 };
 
 static PyMemberDef bufferedwriter_members[] = {
-    {"raw", T_OBJECT, offsetof(buffered, raw), READONLY},
-    {"_finalizing", T_BOOL, offsetof(buffered, finalizing), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(buffered, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(buffered, dict), READONLY},
+    {"raw", _Py_T_OBJECT, offsetof(buffered, raw), Py_READONLY},
+    {"_finalizing", Py_T_BOOL, offsetof(buffered, finalizing), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(buffered, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(buffered, dict), Py_READONLY},
     {NULL}
 };
 
 static PyGetSetDef bufferedwriter_getset[] = {
-    {"closed", (getter)buffered_closed_get, NULL, NULL},
-    {"name", (getter)buffered_name_get, NULL, NULL},
-    {"mode", (getter)buffered_mode_get, NULL, NULL},
+    _IO__BUFFERED_CLOSED_GETTERDEF
+    _IO__BUFFERED_NAME_GETTERDEF
+    _IO__BUFFERED_MODE_GETTERDEF
     {NULL}
 };
 
@@ -2598,8 +2634,8 @@ static PyMethodDef bufferedrwpair_methods[] = {
 };
 
 static PyMemberDef bufferedrwpair_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(rwpair, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(rwpair, dict), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(rwpair, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(rwpair, dict), Py_READONLY},
     {NULL}
 };
 
@@ -2660,17 +2696,17 @@ static PyMethodDef bufferedrandom_methods[] = {
 };
 
 static PyMemberDef bufferedrandom_members[] = {
-    {"raw", T_OBJECT, offsetof(buffered, raw), READONLY},
-    {"_finalizing", T_BOOL, offsetof(buffered, finalizing), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(buffered, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(buffered, dict), READONLY},
+    {"raw", _Py_T_OBJECT, offsetof(buffered, raw), Py_READONLY},
+    {"_finalizing", Py_T_BOOL, offsetof(buffered, finalizing), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(buffered, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(buffered, dict), Py_READONLY},
     {NULL}
 };
 
 static PyGetSetDef bufferedrandom_getset[] = {
-    {"closed", (getter)buffered_closed_get, NULL, NULL},
-    {"name", (getter)buffered_name_get, NULL, NULL},
-    {"mode", (getter)buffered_mode_get, NULL, NULL},
+    _IO__BUFFERED_CLOSED_GETTERDEF
+    _IO__BUFFERED_NAME_GETTERDEF
+    _IO__BUFFERED_MODE_GETTERDEF
     {NULL}
 };
 
diff --git a/Modules/_io/bytesio.c b/Modules/_io/bytesio.c
index 80773058693259..16b8ac600ace79 100644
--- a/Modules/_io/bytesio.c
+++ b/Modules/_io/bytesio.c
@@ -1,5 +1,7 @@
 #include "Python.h"
 #include "pycore_object.h"
+#include "pycore_sysmodule.h"     // _PySys_GetSizeOf()
+
 #include <stddef.h>               // offsetof()
 #include "_iomodule.h"
 
@@ -124,12 +126,13 @@ unshare_buffer(bytesio *self, size_t size)
 static int
 resize_buffer(bytesio *self, size_t size)
 {
+    assert(self->buf != NULL);
+    assert(self->exports == 0);
+
     /* Here, unsigned types are used to avoid dealing with signed integer
        overflow, which is undefined in C. */
     size_t alloc = PyBytes_GET_SIZE(self->buf);
 
-    assert(self->buf != NULL);
-
     /* For simplicity, stay in the range of the signed type. Anyway, Python
        doesn't allow strings to be longer than this. */
     if (size > PY_SSIZE_T_MAX)
@@ -1028,8 +1031,8 @@ static struct PyMethodDef bytesio_methods[] = {
 };
 
 static PyMemberDef bytesio_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(bytesio, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(bytesio, dict), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(bytesio, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(bytesio, dict), Py_READONLY},
     {NULL}
 };
 
@@ -1072,7 +1075,7 @@ bytesiobuf_getbuffer(bytesiobuf *obj, Py_buffer *view, int flags)
             "bytesiobuf_getbuffer: view==NULL argument is obsolete");
         return -1;
     }
-    if (SHARED_BUF(b)) {
+    if (b->exports == 0 && SHARED_BUF(b)) {
         if (unshare_buffer(b, b->string_size) < 0)
             return -1;
     }
diff --git a/Modules/_io/clinic/_iomodule.c.h b/Modules/_io/clinic/_iomodule.c.h
index 4d76e333b0f293..112408a95df036 100644
--- a/Modules/_io/clinic/_iomodule.c.h
+++ b/Modules/_io/clinic/_iomodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_io_open__doc__,
 "open($module, /, file, mode=\'r\', buffering=-1, encoding=None,\n"
@@ -202,7 +202,7 @@ _io_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         }
     }
     if (args[2]) {
-        buffering = _PyLong_AsInt(args[2]);
+        buffering = PyLong_AsInt(args[2]);
         if (buffering == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -332,7 +332,7 @@ _io_text_encoding(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    stacklevel = _PyLong_AsInt(args[1]);
+    stacklevel = PyLong_AsInt(args[1]);
     if (stacklevel == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -398,13 +398,10 @@ _io_open_code(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         _PyArg_BadArgument("open_code", "argument 'path'", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     path = args[0];
     return_value = _io_open_code_impl(module, path);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f387eba3f4c0254a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5d60f4e778a600a4 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index 4f40fdadf8ec85..69d28ad00c2ad5 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -3,10 +3,12 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(_io__BufferedIOBase_readinto__doc__,
 "readinto($self, buffer, /)\n"
@@ -26,15 +28,12 @@ _io__BufferedIOBase_readinto(PyObject *self, PyObject *arg)
     Py_buffer buffer = {NULL, NULL};
 
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__BufferedIOBase_readinto_impl(self, &buffer);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for buffer */
@@ -63,15 +62,12 @@ _io__BufferedIOBase_readinto1(PyObject *self, PyObject *arg)
     Py_buffer buffer = {NULL, NULL};
 
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto1", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto1", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__BufferedIOBase_readinto1_impl(self, &buffer);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for buffer */
@@ -162,7 +158,7 @@ _io__BufferedIOBase_read(PyObject *self, PyTypeObject *cls, PyObject *const *arg
     if (nargs < 1) {
         goto skip_optional_posonly;
     }
-    size = _PyLong_AsInt(args[0]);
+    size = PyLong_AsInt(args[0]);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -216,7 +212,7 @@ _io__BufferedIOBase_read1(PyObject *self, PyTypeObject *cls, PyObject *const *ar
     if (nargs < 1) {
         goto skip_optional_posonly;
     }
-    size = _PyLong_AsInt(args[0]);
+    size = PyLong_AsInt(args[0]);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -291,7 +287,13 @@ _io__Buffered___sizeof___impl(buffered *self);
 static PyObject *
 _io__Buffered___sizeof__(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered___sizeof___impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered___sizeof___impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered__dealloc_warn__doc__,
@@ -316,7 +318,31 @@ _io__Buffered_simple_flush_impl(buffered *self);
 static PyObject *
 _io__Buffered_simple_flush(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_simple_flush_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_simple_flush_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#define _IO__BUFFERED_CLOSED_GETTERDEF    \
+    {"closed", (getter)_io__Buffered_closed_get, NULL, NULL},
+
+static PyObject *
+_io__Buffered_closed_get_impl(buffered *self);
+
+static PyObject *
+_io__Buffered_closed_get(buffered *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_closed_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_close__doc__,
@@ -333,7 +359,13 @@ _io__Buffered_close_impl(buffered *self);
 static PyObject *
 _io__Buffered_close(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_close_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_close_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_detach__doc__,
@@ -350,7 +382,13 @@ _io__Buffered_detach_impl(buffered *self);
 static PyObject *
 _io__Buffered_detach(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_detach_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_detach_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_seekable__doc__,
@@ -367,7 +405,13 @@ _io__Buffered_seekable_impl(buffered *self);
 static PyObject *
 _io__Buffered_seekable(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_seekable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_seekable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_readable__doc__,
@@ -384,7 +428,13 @@ _io__Buffered_readable_impl(buffered *self);
 static PyObject *
 _io__Buffered_readable(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_readable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_readable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_writable__doc__,
@@ -401,7 +451,49 @@ _io__Buffered_writable_impl(buffered *self);
 static PyObject *
 _io__Buffered_writable(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_writable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_writable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#define _IO__BUFFERED_NAME_GETTERDEF    \
+    {"name", (getter)_io__Buffered_name_get, NULL, NULL},
+
+static PyObject *
+_io__Buffered_name_get_impl(buffered *self);
+
+static PyObject *
+_io__Buffered_name_get(buffered *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_name_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#define _IO__BUFFERED_MODE_GETTERDEF    \
+    {"mode", (getter)_io__Buffered_mode_get, NULL, NULL},
+
+static PyObject *
+_io__Buffered_mode_get_impl(buffered *self);
+
+static PyObject *
+_io__Buffered_mode_get(buffered *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_mode_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_fileno__doc__,
@@ -418,7 +510,13 @@ _io__Buffered_fileno_impl(buffered *self);
 static PyObject *
 _io__Buffered_fileno(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_fileno_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_fileno_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_isatty__doc__,
@@ -435,7 +533,13 @@ _io__Buffered_isatty_impl(buffered *self);
 static PyObject *
 _io__Buffered_isatty(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_isatty_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_isatty_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_flush__doc__,
@@ -452,7 +556,13 @@ _io__Buffered_flush_impl(buffered *self);
 static PyObject *
 _io__Buffered_flush(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_flush_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_flush_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_peek__doc__,
@@ -491,7 +601,9 @@ _io__Buffered_peek(buffered *self, PyObject *const *args, Py_ssize_t nargs)
         size = ival;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_peek_impl(self, size);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -524,7 +636,9 @@ _io__Buffered_read(buffered *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_read_impl(self, n);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -566,7 +680,9 @@ _io__Buffered_read1(buffered *self, PyObject *const *args, Py_ssize_t nargs)
         n = ival;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_read1_impl(self, n);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -590,15 +706,12 @@ _io__Buffered_readinto(buffered *self, PyObject *arg)
     Py_buffer buffer = {NULL, NULL};
 
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_readinto_impl(self, &buffer);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for buffer */
@@ -627,15 +740,12 @@ _io__Buffered_readinto1(buffered *self, PyObject *arg)
     Py_buffer buffer = {NULL, NULL};
 
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto1", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto1", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_readinto1_impl(self, &buffer);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for buffer */
@@ -673,7 +783,9 @@ _io__Buffered_readline(buffered *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_readline_impl(self, size);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -693,7 +805,13 @@ _io__Buffered_tell_impl(buffered *self);
 static PyObject *
 _io__Buffered_tell(buffered *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io__Buffered_tell_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io__Buffered_tell_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io__Buffered_seek__doc__,
@@ -721,12 +839,14 @@ _io__Buffered_seek(buffered *self, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    whence = _PyLong_AsInt(args[1]);
+    whence = PyLong_AsInt(args[1]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_seek_impl(self, targetobj, whence);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -772,7 +892,9 @@ _io__Buffered_truncate(buffered *self, PyTypeObject *cls, PyObject *const *args,
     }
     pos = args[0];
 skip_optional_posonly:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io__Buffered_truncate_impl(self, cls, pos);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -948,11 +1070,9 @@ _io_BufferedWriter_write(buffered *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_BufferedWriter_write_impl(self, &buffer);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for buffer */
@@ -1098,4 +1218,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b7ddf84a5bc2bf34 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f21ed03255032b43 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index 9550c8728c251e..37023e49087647 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_io_BytesIO_readable__doc__,
 "readable($self, /)\n"
@@ -328,14 +329,9 @@ _io_BytesIO_readinto(bytesio *self, PyObject *arg)
     Py_buffer buffer = {NULL, NULL};
 
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io_BytesIO_readinto_impl(self, &buffer);
 
 exit:
@@ -427,7 +423,7 @@ _io_BytesIO_seek(bytesio *self, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    whence = _PyLong_AsInt(args[1]);
+    whence = PyLong_AsInt(args[1]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -538,4 +534,4 @@ _io_BytesIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=098584d485420b65 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2be0e05a8871b7e2 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 33a37a389d223d..cf3ba28b066cf7 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_io_FileIO_close__doc__,
 "close($self, /)\n"
@@ -245,14 +246,9 @@ _io_FileIO_readinto(fileio *self, PyTypeObject *cls, PyObject *const *args, Py_s
         goto exit;
     }
     if (PyObject_GetBuffer(args[0], &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto", "argument 1", "read-write bytes-like object", args[0]);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io_FileIO_readinto_impl(self, cls, &buffer);
 
 exit:
@@ -381,10 +377,6 @@ _io_FileIO_write(fileio *self, PyTypeObject *cls, PyObject *const *args, Py_ssiz
     if (PyObject_GetBuffer(args[0], &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io_FileIO_write_impl(self, cls, &b);
 
 exit:
@@ -430,7 +422,7 @@ _io_FileIO_seek(fileio *self, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    whence = _PyLong_AsInt(args[1]);
+    whence = PyLong_AsInt(args[1]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -536,4 +528,4 @@ _io_FileIO_isatty(fileio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO_FILEIO_TRUNCATE_METHODDEF
     #define _IO_FILEIO_TRUNCATE_METHODDEF
 #endif /* !defined(_IO_FILEIO_TRUNCATE_METHODDEF) */
-/*[clinic end generated code: output=bef47b31b644996a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1c0f4a36f76b0c6a input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/iobase.c.h b/Modules/_io/clinic/iobase.c.h
index 773e0010477053..6bdfa1444015ac 100644
--- a/Modules/_io/clinic/iobase.c.h
+++ b/Modules/_io/clinic/iobase.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_io__IOBase_seek__doc__,
 "seek($self, offset, whence=os.SEEK_SET, /)\n"
@@ -14,6 +11,11 @@ PyDoc_STRVAR(_io__IOBase_seek__doc__,
 "\n"
 "Change the stream position to the given byte offset.\n"
 "\n"
+"  offset\n"
+"    The stream position, relative to \'whence\'.\n"
+"  whence\n"
+"    The relative position to seek from.\n"
+"\n"
 "The offset is interpreted relative to the position indicated by whence.\n"
 "Values for whence are:\n"
 "\n"
@@ -55,14 +57,14 @@ _io__IOBase_seek(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py_ss
     if (!args) {
         goto exit;
     }
-    offset = _PyLong_AsInt(args[0]);
+    offset = PyLong_AsInt(args[0]);
     if (offset == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (nargs < 2) {
         goto skip_optional_posonly;
     }
-    whence = _PyLong_AsInt(args[1]);
+    whence = PyLong_AsInt(args[1]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -436,4 +438,4 @@ _io__RawIOBase_readall(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _io__RawIOBase_readall_impl(self);
 }
-/*[clinic end generated code: output=301b22f8f75ce3dc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5a22bc5db0ecaacb input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/stringio.c.h b/Modules/_io/clinic/stringio.c.h
index d495dd10c16330..ed505ae67589a8 100644
--- a/Modules/_io/clinic/stringio.c.h
+++ b/Modules/_io/clinic/stringio.c.h
@@ -3,10 +3,12 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_io_StringIO_getvalue__doc__,
 "getvalue($self, /)\n"
@@ -23,7 +25,13 @@ _io_StringIO_getvalue_impl(stringio *self);
 static PyObject *
 _io_StringIO_getvalue(stringio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_StringIO_getvalue_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_getvalue_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_StringIO_tell__doc__,
@@ -41,7 +49,13 @@ _io_StringIO_tell_impl(stringio *self);
 static PyObject *
 _io_StringIO_tell(stringio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_StringIO_tell_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_tell_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_StringIO_read__doc__,
@@ -75,7 +89,9 @@ _io_StringIO_read(stringio *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_StringIO_read_impl(self, size);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -111,7 +127,9 @@ _io_StringIO_readline(stringio *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_StringIO_readline_impl(self, size);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -149,7 +167,9 @@ _io_StringIO_truncate(stringio *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_StringIO_truncate_impl(self, size);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -198,12 +218,14 @@ _io_StringIO_seek(stringio *self, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    whence = _PyLong_AsInt(args[1]);
+    whence = PyLong_AsInt(args[1]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_StringIO_seek_impl(self, pos, whence);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -221,6 +243,21 @@ PyDoc_STRVAR(_io_StringIO_write__doc__,
 #define _IO_STRINGIO_WRITE_METHODDEF    \
     {"write", (PyCFunction)_io_StringIO_write, METH_O, _io_StringIO_write__doc__},
 
+static PyObject *
+_io_StringIO_write_impl(stringio *self, PyObject *obj);
+
+static PyObject *
+_io_StringIO_write(stringio *self, PyObject *obj)
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_write_impl(self, obj);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_io_StringIO_close__doc__,
 "close($self, /)\n"
 "--\n"
@@ -241,7 +278,13 @@ _io_StringIO_close_impl(stringio *self);
 static PyObject *
 _io_StringIO_close(stringio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_StringIO_close_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_close_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_StringIO___init____doc__,
@@ -329,7 +372,13 @@ _io_StringIO_readable_impl(stringio *self);
 static PyObject *
 _io_StringIO_readable(stringio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_StringIO_readable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_readable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_StringIO_writable__doc__,
@@ -347,7 +396,13 @@ _io_StringIO_writable_impl(stringio *self);
 static PyObject *
 _io_StringIO_writable(stringio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_StringIO_writable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_writable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_StringIO_seekable__doc__,
@@ -365,6 +420,112 @@ _io_StringIO_seekable_impl(stringio *self);
 static PyObject *
 _io_StringIO_seekable(stringio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_StringIO_seekable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_seekable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_io_StringIO___getstate____doc__,
+"__getstate__($self, /)\n"
+"--\n"
+"\n");
+
+#define _IO_STRINGIO___GETSTATE___METHODDEF    \
+    {"__getstate__", (PyCFunction)_io_StringIO___getstate__, METH_NOARGS, _io_StringIO___getstate____doc__},
+
+static PyObject *
+_io_StringIO___getstate___impl(stringio *self);
+
+static PyObject *
+_io_StringIO___getstate__(stringio *self, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO___getstate___impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_io_StringIO___setstate____doc__,
+"__setstate__($self, state, /)\n"
+"--\n"
+"\n");
+
+#define _IO_STRINGIO___SETSTATE___METHODDEF    \
+    {"__setstate__", (PyCFunction)_io_StringIO___setstate__, METH_O, _io_StringIO___setstate____doc__},
+
+static PyObject *
+_io_StringIO___setstate___impl(stringio *self, PyObject *state);
+
+static PyObject *
+_io_StringIO___setstate__(stringio *self, PyObject *state)
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO___setstate___impl(self, state);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#define _IO_STRINGIO_CLOSED_GETTERDEF    \
+    {"closed", (getter)_io_StringIO_closed_get, NULL, NULL},
+
+static PyObject *
+_io_StringIO_closed_get_impl(stringio *self);
+
+static PyObject *
+_io_StringIO_closed_get(stringio *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_closed_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#define _IO_STRINGIO_LINE_BUFFERING_GETTERDEF    \
+    {"line_buffering", (getter)_io_StringIO_line_buffering_get, NULL, NULL},
+
+static PyObject *
+_io_StringIO_line_buffering_get_impl(stringio *self);
+
+static PyObject *
+_io_StringIO_line_buffering_get(stringio *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_line_buffering_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#define _IO_STRINGIO_NEWLINES_GETTERDEF    \
+    {"newlines", (getter)_io_StringIO_newlines_get, NULL, NULL},
+
+static PyObject *
+_io_StringIO_newlines_get_impl(stringio *self);
+
+static PyObject *
+_io_StringIO_newlines_get(stringio *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_StringIO_newlines_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
-/*[clinic end generated code: output=533f20ae9b773126 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3a92e8b6c322f61b input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
index 33fc23bd4c0c69..675e0ed2eab75e 100644
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -3,10 +3,12 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_io__TextIOBase_detach__doc__,
 "detach($self, /)\n"
@@ -75,7 +77,7 @@ _io__TextIOBase_read(PyObject *self, PyTypeObject *cls, PyObject *const *args, P
     if (nargs < 1) {
         goto skip_optional_posonly;
     }
-    size = _PyLong_AsInt(args[0]);
+    size = PyLong_AsInt(args[0]);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -129,7 +131,7 @@ _io__TextIOBase_readline(PyObject *self, PyTypeObject *cls, PyObject *const *arg
     if (nargs < 1) {
         goto skip_optional_posonly;
     }
-    size = _PyLong_AsInt(args[0]);
+    size = PyLong_AsInt(args[0]);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -629,7 +631,9 @@ _io_TextIOWrapper_reconfigure(textio *self, PyObject *const *args, Py_ssize_t na
     }
     write_through_obj = args[4];
 skip_optional_kwonly:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_TextIOWrapper_reconfigure_impl(self, encoding, errors, newline_obj, line_buffering_obj, write_through_obj);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -649,7 +653,13 @@ _io_TextIOWrapper_detach_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_detach(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_detach_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_detach_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_write__doc__,
@@ -673,11 +683,10 @@ _io_TextIOWrapper_write(textio *self, PyObject *arg)
         _PyArg_BadArgument("write", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     text = arg;
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_TextIOWrapper_write_impl(self, text);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -710,7 +719,9 @@ _io_TextIOWrapper_read(textio *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_TextIOWrapper_read_impl(self, n);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -752,16 +763,36 @@ _io_TextIOWrapper_readline(textio *self, PyObject *const *args, Py_ssize_t nargs
         size = ival;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_TextIOWrapper_readline_impl(self, size);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_seek__doc__,
-"seek($self, cookie, whence=0, /)\n"
+"seek($self, cookie, whence=os.SEEK_SET, /)\n"
 "--\n"
-"\n");
+"\n"
+"Set the stream position, and return the new stream position.\n"
+"\n"
+"  cookie\n"
+"    Zero or an opaque number returned by tell().\n"
+"  whence\n"
+"    The relative position to seek from.\n"
+"\n"
+"Four operations are supported, given by the following argument\n"
+"combinations:\n"
+"\n"
+"- seek(0, SEEK_SET): Rewind to the start of the stream.\n"
+"- seek(cookie, SEEK_SET): Restore a previous position;\n"
+"  \'cookie\' must be a number returned by tell().\n"
+"- seek(0, SEEK_END): Fast-forward to the end of the stream.\n"
+"- seek(0, SEEK_CUR): Leave the current stream position unchanged.\n"
+"\n"
+"Any other argument combinations are invalid,\n"
+"and may raise exceptions.");
 
 #define _IO_TEXTIOWRAPPER_SEEK_METHODDEF    \
     {"seek", _PyCFunction_CAST(_io_TextIOWrapper_seek), METH_FASTCALL, _io_TextIOWrapper_seek__doc__},
@@ -783,12 +814,14 @@ _io_TextIOWrapper_seek(textio *self, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    whence = _PyLong_AsInt(args[1]);
+    whence = PyLong_AsInt(args[1]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_TextIOWrapper_seek_impl(self, cookieObj, whence);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -797,7 +830,11 @@ _io_TextIOWrapper_seek(textio *self, PyObject *const *args, Py_ssize_t nargs)
 PyDoc_STRVAR(_io_TextIOWrapper_tell__doc__,
 "tell($self, /)\n"
 "--\n"
-"\n");
+"\n"
+"Return the stream position as an opaque number.\n"
+"\n"
+"The return value of tell() can be given as input to seek(), to restore a\n"
+"previous stream position.");
 
 #define _IO_TEXTIOWRAPPER_TELL_METHODDEF    \
     {"tell", (PyCFunction)_io_TextIOWrapper_tell, METH_NOARGS, _io_TextIOWrapper_tell__doc__},
@@ -808,7 +845,13 @@ _io_TextIOWrapper_tell_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_tell(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_tell_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_tell_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_truncate__doc__,
@@ -836,7 +879,9 @@ _io_TextIOWrapper_truncate(textio *self, PyObject *const *args, Py_ssize_t nargs
     }
     pos = args[0];
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _io_TextIOWrapper_truncate_impl(self, pos);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -856,7 +901,13 @@ _io_TextIOWrapper_fileno_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_fileno(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_fileno_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_fileno_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_seekable__doc__,
@@ -873,7 +924,13 @@ _io_TextIOWrapper_seekable_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_seekable(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_seekable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_seekable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_readable__doc__,
@@ -890,7 +947,13 @@ _io_TextIOWrapper_readable_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_readable(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_readable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_readable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_writable__doc__,
@@ -907,7 +970,13 @@ _io_TextIOWrapper_writable_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_writable(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_writable_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_writable_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_isatty__doc__,
@@ -924,7 +993,13 @@ _io_TextIOWrapper_isatty_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_isatty(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_isatty_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_isatty_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_flush__doc__,
@@ -941,7 +1016,13 @@ _io_TextIOWrapper_flush_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_flush(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_flush_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_flush_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_close__doc__,
@@ -958,6 +1039,12 @@ _io_TextIOWrapper_close_impl(textio *self);
 static PyObject *
 _io_TextIOWrapper_close(textio *self, PyObject *Py_UNUSED(ignored))
 {
-    return _io_TextIOWrapper_close_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _io_TextIOWrapper_close_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
-/*[clinic end generated code: output=42f592331302973f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8781a91be6d99e2c input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/winconsoleio.c.h b/Modules/_io/clinic/winconsoleio.c.h
index cd3348dc1227cd..6cab295c44611d 100644
--- a/Modules/_io/clinic/winconsoleio.c.h
+++ b/Modules/_io/clinic/winconsoleio.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 #if defined(HAVE_WINDOWS_CONSOLE_IO)
 
@@ -243,14 +244,9 @@ _io__WindowsConsoleIO_readinto(winconsoleio *self, PyTypeObject *cls, PyObject *
         goto exit;
     }
     if (PyObject_GetBuffer(args[0], &buffer, PyBUF_WRITABLE) < 0) {
-        PyErr_Clear();
         _PyArg_BadArgument("readinto", "argument 1", "read-write bytes-like object", args[0]);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io__WindowsConsoleIO_readinto_impl(self, cls, &buffer);
 
 exit:
@@ -391,10 +387,6 @@ _io__WindowsConsoleIO_write(winconsoleio *self, PyTypeObject *cls, PyObject *con
     if (PyObject_GetBuffer(args[0], &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io__WindowsConsoleIO_write_impl(self, cls, &b);
 
 exit:
@@ -465,4 +457,4 @@ _io__WindowsConsoleIO_isatty(winconsoleio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
     #define _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
 #endif /* !defined(_IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF) */
-/*[clinic end generated code: output=235393758365c229 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=04108fc26b187386 input=a9049054013a1b77]*/
diff --git a/Modules/_io/fileio.c b/Modules/_io/fileio.c
index 30944fc56bf70e..8a73ea0365b7a3 100644
--- a/Modules/_io/fileio.c
+++ b/Modules/_io/fileio.c
@@ -1,24 +1,27 @@
 /* Author: Daniel Stutzbach */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_fileutils.h"     // _Py_BEGIN_SUPPRESS_IPH
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
-#include "structmember.h"         // PyMemberDef
-#include <stdbool.h>
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+
+#include <stdbool.h>              // bool
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // lseek()
+#endif
 #ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
+#  include <sys/types.h>
 #endif
 #ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
+#  include <sys/stat.h>
 #endif
 #ifdef HAVE_IO_H
-#include <io.h>
+#  include <io.h>
 #endif
 #ifdef HAVE_FCNTL_H
-#include <fcntl.h>
+#  include <fcntl.h>              // open()
 #endif
-#include <stddef.h> /* For offsetof */
+
 #include "_iomodule.h"
 
 /*
@@ -35,22 +38,23 @@
  */
 
 #ifdef MS_WINDOWS
-/* can simulate truncate with Win32 API functions; see file_truncate */
-#define HAVE_FTRUNCATE
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-#include <windows.h>
+   // can simulate truncate with Win32 API functions; see file_truncate
+#  define HAVE_FTRUNCATE
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#  include <windows.h>
 #endif
 
 #if BUFSIZ < (8*1024)
-#define SMALLCHUNK (8*1024)
+#  define SMALLCHUNK (8*1024)
 #elif (BUFSIZ >= (2 << 25))
-#error "unreasonable BUFSIZ > 64 MiB defined"
+#  error "unreasonable BUFSIZ > 64 MiB defined"
 #else
-#define SMALLCHUNK BUFSIZ
+#  define SMALLCHUNK BUFSIZ
 #endif
 
+
 /*[clinic input]
 module _io
 class _io.FileIO "fileio *" "clinic_state()->PyFileIO_Type"
@@ -231,7 +235,7 @@ _io_FileIO___init___impl(fileio *self, PyObject *nameobj, const char *mode,
 /*[clinic end generated code: output=23413f68e6484bbd input=588aac967e0ba74b]*/
 {
 #ifdef MS_WINDOWS
-    Py_UNICODE *widename = NULL;
+    wchar_t *widename = NULL;
 #else
     const char *name = NULL;
 #endif
@@ -265,7 +269,7 @@ _io_FileIO___init___impl(fileio *self, PyObject *nameobj, const char *mode,
             self->fd = -1;
     }
 
-    fd = _PyLong_AsInt(nameobj);
+    fd = PyLong_AsInt(nameobj);
     if (fd < 0) {
         if (!PyErr_Occurred()) {
             PyErr_SetString(PyExc_ValueError,
@@ -394,6 +398,11 @@ _io_FileIO___init___impl(fileio *self, PyObject *nameobj, const char *mode,
 
             if (async_err)
                 goto error;
+
+            if (self->fd < 0) {
+                PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, nameobj);
+                goto error;
+            }
         }
         else {
             PyObject *fdobj;
@@ -413,7 +422,7 @@ _io_FileIO___init___impl(fileio *self, PyObject *nameobj, const char *mode,
                 goto error;
             }
 
-            self->fd = _PyLong_AsInt(fdobj);
+            self->fd = PyLong_AsInt(fdobj);
             Py_DECREF(fdobj);
             if (self->fd < 0) {
                 if (!PyErr_Occurred()) {
@@ -425,12 +434,7 @@ _io_FileIO___init___impl(fileio *self, PyObject *nameobj, const char *mode,
                 goto error;
             }
         }
-
         fd_is_own = 1;
-        if (self->fd < 0) {
-            PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, nameobj);
-            goto error;
-        }
 
 #ifndef MS_WINDOWS
         if (_Py_set_inheritable(self->fd, 0, atomic_flag_works) < 0)
@@ -1058,8 +1062,8 @@ _io_FileIO_truncate_impl(fileio *self, PyTypeObject *cls, PyObject *posobj)
     Py_END_ALLOW_THREADS
 
     if (ret != 0) {
-        Py_DECREF(posobj);
         PyErr_SetFromErrno(PyExc_OSError);
+        Py_DECREF(posobj);
         return NULL;
     }
 
@@ -1100,7 +1104,7 @@ fileio_repr(fileio *self)
     if (self->fd < 0)
         return PyUnicode_FromFormat("<_io.FileIO [closed]>");
 
-    if (_PyObject_LookupAttr((PyObject *) self, &_Py_ID(name), &nameobj) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *) self, &_Py_ID(name), &nameobj) < 0) {
         return NULL;
     }
     if (nameobj == NULL) {
@@ -1200,10 +1204,10 @@ static PyGetSetDef fileio_getsetlist[] = {
 };
 
 static PyMemberDef fileio_members[] = {
-    {"_blksize", T_UINT, offsetof(fileio, blksize), 0},
-    {"_finalizing", T_BOOL, offsetof(fileio, finalizing), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(fileio, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(fileio, dict), READONLY},
+    {"_blksize", Py_T_UINT, offsetof(fileio, blksize), 0},
+    {"_finalizing", Py_T_BOOL, offsetof(fileio, finalizing), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(fileio, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(fileio, dict), Py_READONLY},
     {NULL}
 };
 
diff --git a/Modules/_io/iobase.c b/Modules/_io/iobase.c
index 14d48813aefe83..4da8e5bd572d74 100644
--- a/Modules/_io/iobase.c
+++ b/Modules/_io/iobase.c
@@ -8,10 +8,12 @@
 */
 
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
+#include "pycore_call.h"          // _PyObject_CallMethod()
 #include "pycore_long.h"          // _PyLong_GetOne()
-#include "pycore_object.h"
+#include "pycore_object.h"        // _PyType_HasFeature()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+
 #include <stddef.h>               // offsetof()
 #include "_iomodule.h"
 
@@ -83,7 +85,9 @@ iobase_unsupported(_PyIO_State *state, const char *message)
 _io._IOBase.seek
     cls: defining_class
     offset: int(unused=True)
+      The stream position, relative to 'whence'.
     whence: int(unused=True, c_default='0') = os.SEEK_SET
+      The relative position to seek from.
     /
 
 Change the stream position to the given byte offset.
@@ -101,7 +105,7 @@ Return the new absolute position.
 static PyObject *
 _io__IOBase_seek_impl(PyObject *self, PyTypeObject *cls,
                       int Py_UNUSED(offset), int Py_UNUSED(whence))
-/*[clinic end generated code: output=8bd74ea6538ded53 input=8d4e6adcd08292f2]*/
+/*[clinic end generated code: output=8bd74ea6538ded53 input=74211232b363363e]*/
 {
     _PyIO_State *state = get_io_state_by_cls(cls);
     return iobase_unsupported(state, "seek");
@@ -144,13 +148,9 @@ _io__IOBase_truncate_impl(PyObject *self, PyTypeObject *cls,
 static int
 iobase_is_closed(PyObject *self)
 {
-    PyObject *res;
-    int ret;
     /* This gets the derived attribute, which is *not* __IOBase_closed
        in most cases! */
-    ret = _PyObject_LookupAttr(self, &_Py_ID(__IOBase_closed), &res);
-    Py_XDECREF(res);
-    return ret;
+    return PyObject_HasAttrWithError(self, &_Py_ID(__IOBase_closed));
 }
 
 /* Flush and close methods */
@@ -196,7 +196,7 @@ iobase_check_closed(PyObject *self)
     int closed;
     /* This gets the derived attribute, which is *not* __IOBase_closed
        in most cases! */
-    closed = _PyObject_LookupAttr(self, &_Py_ID(closed), &res);
+    closed = PyObject_GetOptionalAttr(self, &_Py_ID(closed), &res);
     if (closed > 0) {
         closed = PyObject_IsTrue(res);
         Py_DECREF(res);
@@ -265,7 +265,7 @@ static PyObject *
 _io__IOBase_close_impl(PyObject *self)
 /*[clinic end generated code: output=63c6a6f57d783d6d input=f4494d5c31dbc6b7]*/
 {
-    int rc, closed = iobase_is_closed(self);
+    int rc1, rc2, closed = iobase_is_closed(self);
 
     if (closed < 0) {
         return NULL;
@@ -274,19 +274,14 @@ _io__IOBase_close_impl(PyObject *self)
         Py_RETURN_NONE;
     }
 
-    PyObject *res = PyObject_CallMethodNoArgs(self, &_Py_ID(flush));
-
+    rc1 = _PyFile_Flush(self);
     PyObject *exc = PyErr_GetRaisedException();
-    rc = PyObject_SetAttr(self, &_Py_ID(__IOBase_closed), Py_True);
+    rc2 = PyObject_SetAttr(self, &_Py_ID(__IOBase_closed), Py_True);
     _PyErr_ChainExceptions1(exc);
-    if (rc < 0) {
-        Py_CLEAR(res);
-    }
-
-    if (res == NULL)
+    if (rc1 < 0 || rc2 < 0) {
         return NULL;
+    }
 
-    Py_DECREF(res);
     Py_RETURN_NONE;
 }
 
@@ -303,7 +298,7 @@ iobase_finalize(PyObject *self)
 
     /* If `closed` doesn't exist or can't be evaluated as bool, then the
        object is probably in an unusable state, so ignore. */
-    if (_PyObject_LookupAttr(self, &_Py_ID(closed), &res) <= 0) {
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(closed), &res) <= 0) {
         PyErr_Clear();
         closed = -1;
     }
@@ -319,20 +314,8 @@ iobase_finalize(PyObject *self)
         if (PyObject_SetAttr(self, &_Py_ID(_finalizing), Py_True))
             PyErr_Clear();
         res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(close));
-        /* Silencing I/O errors is bad, but printing spurious tracebacks is
-           equally as bad, and potentially more frequent (because of
-           shutdown issues). */
         if (res == NULL) {
-#ifndef Py_DEBUG
-            if (_Py_GetConfig()->dev_mode) {
-                PyErr_WriteUnraisable(self);
-            }
-            else {
-                PyErr_Clear();
-            }
-#else
             PyErr_WriteUnraisable(self);
-#endif
         }
         else {
             Py_DECREF(res);
@@ -583,7 +566,7 @@ _io__IOBase_readline_impl(PyObject *self, Py_ssize_t limit)
     PyObject *peek, *buffer, *result;
     Py_ssize_t old_size = -1;
 
-    if (_PyObject_LookupAttr(self, &_Py_ID(peek), &peek) < 0) {
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(peek), &peek) < 0) {
         return NULL;
     }
 
@@ -875,8 +858,8 @@ static PyGetSetDef iobase_getset[] = {
 };
 
 static struct PyMemberDef iobase_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(iobase, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(iobase, dict), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(iobase, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(iobase, dict), Py_READONLY},
     {NULL},
 };
 
@@ -1036,13 +1019,6 @@ rawiobase_write(PyObject *self, PyObject *args)
     return NULL;
 }
 
-static int
-rawiobase_traverse(PyObject *self, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(self));
-    return 0;
-}
-
 static PyMethodDef rawiobase_methods[] = {
     _IO__RAWIOBASE_READ_METHODDEF
     _IO__RAWIOBASE_READALL_METHODDEF
@@ -1054,13 +1030,13 @@ static PyMethodDef rawiobase_methods[] = {
 static PyType_Slot rawiobase_slots[] = {
     {Py_tp_doc, (void *)rawiobase_doc},
     {Py_tp_methods, rawiobase_methods},
-    {Py_tp_traverse, rawiobase_traverse},
     {0, NULL},
 };
 
+/* Do not set Py_TPFLAGS_HAVE_GC so that tp_traverse and tp_clear are inherited */
 PyType_Spec rawiobase_spec = {
     .name = "_io._RawIOBase",
-    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC |
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
               Py_TPFLAGS_IMMUTABLETYPE),
     .slots = rawiobase_slots,
 };
diff --git a/Modules/_io/stringio.c b/Modules/_io/stringio.c
index 3eb25704b4aa55..74dcee23730306 100644
--- a/Modules/_io/stringio.c
+++ b/Modules/_io/stringio.c
@@ -1,4 +1,3 @@
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include <stddef.h>               // offsetof()
 #include "pycore_object.h"
@@ -46,6 +45,10 @@ typedef struct {
     _PyIO_State *module_state;
 } stringio;
 
+#define clinic_state() (find_io_state_by_def(Py_TYPE(self)))
+#include "clinic/stringio.c.h"
+#undef clinic_state
+
 static int _io_StringIO___init__(PyObject *self, PyObject *args, PyObject *kwargs);
 
 #define CHECK_INITIALIZED(self) \
@@ -200,10 +203,6 @@ write_str(stringio *self, PyObject *obj)
         return -1;
 
     assert(PyUnicode_Check(decoded));
-    if (PyUnicode_READY(decoded)) {
-        Py_DECREF(decoded);
-        return -1;
-    }
     len = PyUnicode_GET_LENGTH(decoded);
     assert(len >= 0);
 
@@ -268,6 +267,7 @@ write_str(stringio *self, PyObject *obj)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.getvalue
 
 Retrieve the entire contents of the object.
@@ -275,7 +275,7 @@ Retrieve the entire contents of the object.
 
 static PyObject *
 _io_StringIO_getvalue_impl(stringio *self)
-/*[clinic end generated code: output=27b6a7bfeaebce01 input=d23cb81d6791cf88]*/
+/*[clinic end generated code: output=27b6a7bfeaebce01 input=fb5dee06b8d467f3]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -286,6 +286,7 @@ _io_StringIO_getvalue_impl(stringio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.tell
 
 Tell the current file position.
@@ -293,7 +294,7 @@ Tell the current file position.
 
 static PyObject *
 _io_StringIO_tell_impl(stringio *self)
-/*[clinic end generated code: output=2e87ac67b116c77b input=ec866ebaff02f405]*/
+/*[clinic end generated code: output=2e87ac67b116c77b input=98a08f3e2dae3550]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -301,6 +302,7 @@ _io_StringIO_tell_impl(stringio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.read
     size: Py_ssize_t(accept={int, NoneType}) = -1
     /
@@ -313,7 +315,7 @@ is reached. Return an empty string at EOF.
 
 static PyObject *
 _io_StringIO_read_impl(stringio *self, Py_ssize_t size)
-/*[clinic end generated code: output=ae8cf6002f71626c input=0921093383dfb92d]*/
+/*[clinic end generated code: output=ae8cf6002f71626c input=9fbef45d8aece8e7]*/
 {
     Py_ssize_t n;
     Py_UCS4 *output;
@@ -373,6 +375,7 @@ _stringio_readline(stringio *self, Py_ssize_t limit)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.readline
     size: Py_ssize_t(accept={int, NoneType}) = -1
     /
@@ -384,7 +387,7 @@ Returns an empty string if EOF is hit immediately.
 
 static PyObject *
 _io_StringIO_readline_impl(stringio *self, Py_ssize_t size)
-/*[clinic end generated code: output=cabd6452f1b7e85d input=a5bd70bf682aa276]*/
+/*[clinic end generated code: output=cabd6452f1b7e85d input=4d14b8495dea1d98]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -432,6 +435,7 @@ stringio_iternext(stringio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.truncate
     pos as size: Py_ssize_t(accept={int, NoneType}, c_default="self->pos") = None
     /
@@ -445,7 +449,7 @@ Returns the new absolute position.
 
 static PyObject *
 _io_StringIO_truncate_impl(stringio *self, Py_ssize_t size)
-/*[clinic end generated code: output=eb3aef8e06701365 input=5505cff90ca48b96]*/
+/*[clinic end generated code: output=eb3aef8e06701365 input=461b872dce238452]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -467,6 +471,7 @@ _io_StringIO_truncate_impl(stringio *self, Py_ssize_t size)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.seek
     pos: Py_ssize_t
     whence: int = 0
@@ -483,7 +488,7 @@ Returns the new absolute position.
 
 static PyObject *
 _io_StringIO_seek_impl(stringio *self, Py_ssize_t pos, int whence)
-/*[clinic end generated code: output=e9e0ac9a8ae71c25 input=e3855b24e7cae06a]*/
+/*[clinic end generated code: output=e9e0ac9a8ae71c25 input=c75ced09343a00d7]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -520,6 +525,7 @@ _io_StringIO_seek_impl(stringio *self, Py_ssize_t pos, int whence)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.write
     s as obj: object
     /
@@ -531,8 +537,8 @@ the length of the string.
 [clinic start generated code]*/
 
 static PyObject *
-_io_StringIO_write(stringio *self, PyObject *obj)
-/*[clinic end generated code: output=0deaba91a15b94da input=cf96f3b16586e669]*/
+_io_StringIO_write_impl(stringio *self, PyObject *obj)
+/*[clinic end generated code: output=d53b1d841d7db288 input=1561272c0da4651f]*/
 {
     Py_ssize_t size;
 
@@ -542,8 +548,6 @@ _io_StringIO_write(stringio *self, PyObject *obj)
                      Py_TYPE(obj)->tp_name);
         return NULL;
     }
-    if (PyUnicode_READY(obj))
-        return NULL;
     CHECK_CLOSED(self);
     size = PyUnicode_GET_LENGTH(obj);
 
@@ -554,6 +558,7 @@ _io_StringIO_write(stringio *self, PyObject *obj)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.close
 
 Close the IO object.
@@ -566,7 +571,7 @@ This method has no effect if the file is already closed.
 
 static PyObject *
 _io_StringIO_close_impl(stringio *self)
-/*[clinic end generated code: output=04399355cbe518f1 input=cbc10b45f35d6d46]*/
+/*[clinic end generated code: output=04399355cbe518f1 input=305d19aa29cc40b9]*/
 {
     self->closed = 1;
     /* Free up some memory */
@@ -763,6 +768,7 @@ _io_StringIO___init___impl(stringio *self, PyObject *value,
 /* Properties and pseudo-properties */
 
 /*[clinic input]
+@critical_section
 _io.StringIO.readable
 
 Returns True if the IO object can be read.
@@ -770,7 +776,7 @@ Returns True if the IO object can be read.
 
 static PyObject *
 _io_StringIO_readable_impl(stringio *self)
-/*[clinic end generated code: output=b19d44dd8b1ceb99 input=39ce068b224c21ad]*/
+/*[clinic end generated code: output=b19d44dd8b1ceb99 input=6cd2ffd65a8e8763]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -778,6 +784,7 @@ _io_StringIO_readable_impl(stringio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.writable
 
 Returns True if the IO object can be written.
@@ -785,7 +792,7 @@ Returns True if the IO object can be written.
 
 static PyObject *
 _io_StringIO_writable_impl(stringio *self)
-/*[clinic end generated code: output=13e4dd77187074ca input=7a691353aac38835]*/
+/*[clinic end generated code: output=13e4dd77187074ca input=1b3c63dbaa761c69]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -793,6 +800,7 @@ _io_StringIO_writable_impl(stringio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.StringIO.seekable
 
 Returns True if the IO object can be seeked.
@@ -800,7 +808,7 @@ Returns True if the IO object can be seeked.
 
 static PyObject *
 _io_StringIO_seekable_impl(stringio *self)
-/*[clinic end generated code: output=4d20b4641c756879 input=4c606d05b32952e6]*/
+/*[clinic end generated code: output=4d20b4641c756879 input=a820fad2cf085fc3]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
@@ -819,8 +827,15 @@ _io_StringIO_seekable_impl(stringio *self)
    supported.
 */
 
+/*[clinic input]
+@critical_section
+_io.StringIO.__getstate__
+
+[clinic start generated code]*/
+
 static PyObject *
-stringio_getstate(stringio *self, PyObject *Py_UNUSED(ignored))
+_io_StringIO___getstate___impl(stringio *self)
+/*[clinic end generated code: output=780be4a996410199 input=76f27255ef83bb92]*/
 {
     PyObject *initvalue = _io_StringIO_getvalue_impl(self);
     PyObject *dict;
@@ -846,8 +861,17 @@ stringio_getstate(stringio *self, PyObject *Py_UNUSED(ignored))
     return state;
 }
 
+/*[clinic input]
+@critical_section
+_io.StringIO.__setstate__
+
+    state: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-stringio_setstate(stringio *self, PyObject *state)
+_io_StringIO___setstate___impl(stringio *self, PyObject *state)
+/*[clinic end generated code: output=cb3962bc6d5c5609 input=8a27784b11b82e47]*/
 {
     PyObject *initarg;
     PyObject *position_obj;
@@ -946,36 +970,53 @@ stringio_setstate(stringio *self, PyObject *state)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_io.StringIO.closed
+[clinic start generated code]*/
 
 static PyObject *
-stringio_closed(stringio *self, void *context)
+_io_StringIO_closed_get_impl(stringio *self)
+/*[clinic end generated code: output=531ddca7954331d6 input=178d2ef24395fd49]*/
 {
     CHECK_INITIALIZED(self);
     return PyBool_FromLong(self->closed);
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_io.StringIO.line_buffering
+[clinic start generated code]*/
+
 static PyObject *
-stringio_line_buffering(stringio *self, void *context)
+_io_StringIO_line_buffering_get_impl(stringio *self)
+/*[clinic end generated code: output=360710e0112966ae input=6a7634e7f890745e]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
     Py_RETURN_FALSE;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_io.StringIO.newlines
+[clinic start generated code]*/
+
 static PyObject *
-stringio_newlines(stringio *self, void *context)
+_io_StringIO_newlines_get_impl(stringio *self)
+/*[clinic end generated code: output=35d7c0b66d7e0160 input=092a14586718244b]*/
 {
     CHECK_INITIALIZED(self);
     CHECK_CLOSED(self);
-    if (self->decoder == NULL)
+    if (self->decoder == NULL) {
         Py_RETURN_NONE;
+    }
     return PyObject_GetAttr(self->decoder, &_Py_ID(newlines));
 }
 
-#define clinic_state() (find_io_state_by_def(Py_TYPE(self)))
-#include "clinic/stringio.c.h"
-#undef clinic_state
-
 static struct PyMethodDef stringio_methods[] = {
     _IO_STRINGIO_CLOSE_METHODDEF
     _IO_STRINGIO_GETVALUE_METHODDEF
@@ -990,27 +1031,27 @@ static struct PyMethodDef stringio_methods[] = {
     _IO_STRINGIO_READABLE_METHODDEF
     _IO_STRINGIO_WRITABLE_METHODDEF
 
-    {"__getstate__", (PyCFunction)stringio_getstate, METH_NOARGS},
-    {"__setstate__", (PyCFunction)stringio_setstate, METH_O},
+    _IO_STRINGIO___GETSTATE___METHODDEF
+    _IO_STRINGIO___SETSTATE___METHODDEF
     {NULL, NULL}        /* sentinel */
 };
 
 static PyGetSetDef stringio_getset[] = {
-    {"closed",         (getter)stringio_closed,         NULL, NULL},
-    {"newlines",       (getter)stringio_newlines,       NULL, NULL},
+    _IO_STRINGIO_CLOSED_GETTERDEF
+    _IO_STRINGIO_NEWLINES_GETTERDEF
     /*  (following comments straight off of the original Python wrapper:)
         XXX Cruft to support the TextIOWrapper API. This would only
         be meaningful if StringIO supported the buffer attribute.
         Hopefully, a better solution, than adding these pseudo-attributes,
         will be found.
     */
-    {"line_buffering", (getter)stringio_line_buffering, NULL, NULL},
+    _IO_STRINGIO_LINE_BUFFERING_GETTERDEF
     {NULL}
 };
 
 static struct PyMemberDef stringio_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(stringio, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(stringio, dict), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(stringio, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(stringio, dict), Py_READONLY},
     {NULL},
 };
 
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index e858a1fb498f82..545f467b7f0257 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -6,14 +6,16 @@
     Written by Amaury Forgeot d'Arc and Antoine Pitrou
 */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
-#include "pycore_interp.h"        // PyInterpreterState.fs_codec
-#include "pycore_long.h"          // _PyLong_GetZero()
-#include "pycore_fileutils.h"     // _Py_GetLocaleEncoding()
-#include "pycore_object.h"
-#include "pycore_pystate.h"       // _PyInterpreterState_GET()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_call.h"              // _PyObject_CallMethod()
+#include "pycore_codecs.h"            // _PyCodecInfo_GetIncrementalDecoder()
+#include "pycore_fileutils.h"         // _Py_GetLocaleEncoding()
+#include "pycore_interp.h"            // PyInterpreterState.fs_codec
+#include "pycore_long.h"              // _PyLong_GetZero()
+#include "pycore_object.h"            // _PyObject_GC_UNTRACK()
+#include "pycore_pyerrors.h"          // _PyErr_ChainExceptions1()
+#include "pycore_pystate.h"           // _PyInterpreterState_GET()
+
 #include "_iomodule.h"
 
 /*[clinic input]
@@ -167,12 +169,6 @@ textiobase_errors_get(PyObject *self, void *context)
     Py_RETURN_NONE;
 }
 
-static int
-textiobase_traverse(PyObject *self, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(self));
-    return 0;
-}
 
 static PyMethodDef textiobase_methods[] = {
     _IO__TEXTIOBASE_DETACH_METHODDEF
@@ -193,13 +189,13 @@ static PyType_Slot textiobase_slots[] = {
     {Py_tp_doc, (void *)textiobase_doc},
     {Py_tp_methods, textiobase_methods},
     {Py_tp_getset, textiobase_getset},
-    {Py_tp_traverse, textiobase_traverse},
     {0, NULL},
 };
 
+/* Do not set Py_TPFLAGS_HAVE_GC so that tp_traverse and tp_clear are inherited */
 PyType_Spec textiobase_spec = {
     .name = "_io._TextIOBase",
-    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC |
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
               Py_TPFLAGS_IMMUTABLETYPE),
     .slots = textiobase_slots,
 };
@@ -239,7 +235,7 @@ _io_IncrementalNewlineDecoder___init___impl(nldecoder_object *self,
 {
 
     if (errors == NULL) {
-        errors = Py_NewRef(&_Py_ID(strict));
+        errors = &_Py_ID(strict);
     }
     else {
         errors = Py_NewRef(errors);
@@ -294,10 +290,6 @@ check_decoded(PyObject *decoded)
         Py_DECREF(decoded);
         return -1;
     }
-    if (PyUnicode_READY(decoded) < 0) {
-        Py_DECREF(decoded);
-        return -1;
-    }
     return 0;
 }
 
@@ -955,7 +947,7 @@ _textiowrapper_set_encoder(textio *self, PyObject *codec_info,
         return -1;
 
     /* Get the normalized named of the codec */
-    if (_PyObject_LookupAttr(codec_info, &_Py_ID(name), &res) < 0) {
+    if (PyObject_GetOptionalAttr(codec_info, &_Py_ID(name), &res) < 0) {
         return -1;
     }
     if (res != NULL && PyUnicode_Check(res)) {
@@ -1028,15 +1020,10 @@ io_check_errors(PyObject *errors)
         return 0;
     }
 
-    Py_ssize_t name_length;
-    const char *name = PyUnicode_AsUTF8AndSize(errors, &name_length);
+    const char *name = _PyUnicode_AsUTF8NoNUL(errors);
     if (name == NULL) {
         return -1;
     }
-    if (strlen(name) != (size_t)name_length) {
-        PyErr_SetString(PyExc_ValueError, "embedded null character in errors");
-        return -1;
-    }
     PyObject *handler = PyCodec_LookupError(name);
     if (handler != NULL) {
         Py_DECREF(handler);
@@ -1125,6 +1112,10 @@ _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer,
     else if (io_check_errors(errors)) {
         return -1;
     }
+    const char *errors_str = _PyUnicode_AsUTF8NoNUL(errors);
+    if (errors_str == NULL) {
+        return -1;
+    }
 
     if (validate_newline(newline) < 0) {
         return -1;
@@ -1147,7 +1138,7 @@ _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer,
 
     if (encoding == NULL && _PyRuntime.preconfig.utf8_mode) {
         _Py_DECLARE_STR(utf_8, "utf-8");
-        self->encoding = Py_NewRef(&_Py_STR(utf_8));
+        self->encoding = &_Py_STR(utf_8);
     }
     else if (encoding == NULL || (strcmp(encoding, "locale") == 0)) {
         self->encoding = _Py_GetLocaleEncodingObject();
@@ -1197,11 +1188,11 @@ _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer,
     /* Build the decoder object */
     _PyIO_State *state = find_io_state_by_def(Py_TYPE(self));
     self->state = state;
-    if (_textiowrapper_set_decoder(self, codec_info, PyUnicode_AsUTF8(errors)) != 0)
+    if (_textiowrapper_set_decoder(self, codec_info, errors_str) != 0)
         goto error;
 
     /* Build the encoder object */
-    if (_textiowrapper_set_encoder(self, codec_info, PyUnicode_AsUTF8(errors)) != 0)
+    if (_textiowrapper_set_encoder(self, codec_info, errors_str) != 0)
         goto error;
 
     /* Finished sorting out the codec details */
@@ -1211,7 +1202,7 @@ _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer,
         Py_IS_TYPE(buffer, state->PyBufferedWriter_Type) ||
         Py_IS_TYPE(buffer, state->PyBufferedRandom_Type))
     {
-        if (_PyObject_LookupAttr(buffer, &_Py_ID(raw), &raw) < 0)
+        if (PyObject_GetOptionalAttr(buffer, &_Py_ID(raw), &raw) < 0)
             goto error;
         /* Cache the raw FileIO object to speed up 'closed' checks */
         if (raw != NULL) {
@@ -1231,11 +1222,10 @@ _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer,
         goto error;
     self->seekable = self->telling = r;
 
-    r = _PyObject_LookupAttr(buffer, &_Py_ID(read1), &res);
+    r = PyObject_HasAttrWithError(buffer, &_Py_ID(read1));
     if (r < 0) {
         goto error;
     }
-    Py_XDECREF(res);
     self->has_read1 = r;
 
     self->encoding_start_of_stream = 0;
@@ -1298,35 +1288,46 @@ textiowrapper_change_encoding(textio *self, PyObject *encoding,
             errors = &_Py_ID(strict);
         }
     }
+    Py_INCREF(errors);
 
+    const char *c_encoding = PyUnicode_AsUTF8(encoding);
+    if (c_encoding == NULL) {
+        Py_DECREF(encoding);
+        Py_DECREF(errors);
+        return -1;
+    }
     const char *c_errors = PyUnicode_AsUTF8(errors);
     if (c_errors == NULL) {
         Py_DECREF(encoding);
+        Py_DECREF(errors);
         return -1;
     }
 
     // Create new encoder & decoder
     PyObject *codec_info = _PyCodec_LookupTextEncoding(
-        PyUnicode_AsUTF8(encoding), "codecs.open()");
+        c_encoding, "codecs.open()");
     if (codec_info == NULL) {
         Py_DECREF(encoding);
+        Py_DECREF(errors);
         return -1;
     }
     if (_textiowrapper_set_decoder(self, codec_info, c_errors) != 0 ||
             _textiowrapper_set_encoder(self, codec_info, c_errors) != 0) {
         Py_DECREF(codec_info);
         Py_DECREF(encoding);
+        Py_DECREF(errors);
         return -1;
     }
     Py_DECREF(codec_info);
 
     Py_SETREF(self->encoding, encoding);
-    Py_SETREF(self->errors, Py_NewRef(errors));
+    Py_SETREF(self->errors, errors);
 
     return _textiowrapper_fix_encoder_state(self);
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.reconfigure
     *
     encoding: object = None
@@ -1346,12 +1347,32 @@ _io_TextIOWrapper_reconfigure_impl(textio *self, PyObject *encoding,
                                    PyObject *errors, PyObject *newline_obj,
                                    PyObject *line_buffering_obj,
                                    PyObject *write_through_obj)
-/*[clinic end generated code: output=52b812ff4b3d4b0f input=671e82136e0f5822]*/
+/*[clinic end generated code: output=52b812ff4b3d4b0f input=dc3bd35ebda702a7]*/
 {
     int line_buffering;
     int write_through;
     const char *newline = NULL;
 
+    if (encoding != Py_None && !PyUnicode_Check(encoding)) {
+        PyErr_Format(PyExc_TypeError,
+                "reconfigure() argument 'encoding' must be str or None, not %s",
+                Py_TYPE(encoding)->tp_name);
+        return NULL;
+    }
+    if (errors != Py_None && !PyUnicode_Check(errors)) {
+        PyErr_Format(PyExc_TypeError,
+                "reconfigure() argument 'errors' must be str or None, not %s",
+                Py_TYPE(errors)->tp_name);
+        return NULL;
+    }
+    if (newline_obj != NULL && newline_obj != Py_None &&
+        !PyUnicode_Check(newline_obj))
+    {
+        PyErr_Format(PyExc_TypeError,
+                "reconfigure() argument 'newline' must be str or None, not %s",
+                Py_TYPE(newline_obj)->tp_name);
+        return NULL;
+    }
     /* Check if something is in the read buffer */
     if (self->decoded_chars != NULL) {
         if (encoding != Py_None || errors != Py_None || newline_obj != NULL) {
@@ -1371,17 +1392,18 @@ _io_TextIOWrapper_reconfigure_impl(textio *self, PyObject *encoding,
 
     line_buffering = convert_optional_bool(line_buffering_obj,
                                            self->line_buffering);
+    if (line_buffering < 0) {
+        return NULL;
+    }
     write_through = convert_optional_bool(write_through_obj,
                                           self->write_through);
-    if (line_buffering < 0 || write_through < 0) {
+    if (write_through < 0) {
         return NULL;
     }
 
-    PyObject *res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-    if (res == NULL) {
+    if (_PyFile_Flush((PyObject *)self) < 0) {
         return NULL;
     }
-    Py_DECREF(res);
     self->b2cratio = 0;
 
     if (newline_obj != NULL && set_newline(self, newline) < 0) {
@@ -1510,19 +1532,19 @@ textiowrapper_closed_get(textio *self, void *context);
 
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.detach
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_detach_impl(textio *self)
-/*[clinic end generated code: output=7ba3715cd032d5f2 input=e5a71fbda9e1d9f9]*/
+/*[clinic end generated code: output=7ba3715cd032d5f2 input=c908a3b4ef203b0f]*/
 {
-    PyObject *buffer, *res;
+    PyObject *buffer;
     CHECK_ATTACHED(self);
-    res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-    if (res == NULL)
+    if (_PyFile_Flush((PyObject *)self) < 0) {
         return NULL;
-    Py_DECREF(res);
+    }
     buffer = self->buffer;
     self->buffer = NULL;
     self->detached = 1;
@@ -1602,6 +1624,7 @@ _textiowrapper_writeflush(textio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.write
     text: unicode
     /
@@ -1609,7 +1632,7 @@ _io.TextIOWrapper.write
 
 static PyObject *
 _io_TextIOWrapper_write_impl(textio *self, PyObject *text)
-/*[clinic end generated code: output=d2deb0d50771fcec input=fdf19153584a0e44]*/
+/*[clinic end generated code: output=d2deb0d50771fcec input=73ec95c5c4a3489c]*/
 {
     PyObject *ret;
     PyObject *b;
@@ -1617,9 +1640,6 @@ _io_TextIOWrapper_write_impl(textio *self, PyObject *text)
     int haslf = 0;
     int needflush = 0, text_needflush = 0;
 
-    if (PyUnicode_READY(text) == -1)
-        return NULL;
-
     CHECK_ATTACHED(self);
     CHECK_CLOSED(self);
 
@@ -1725,10 +1745,9 @@ _io_TextIOWrapper_write_impl(textio *self, PyObject *text)
     }
 
     if (needflush) {
-        ret = PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(flush));
-        if (ret == NULL)
+        if (_PyFile_Flush(self->buffer) < 0) {
             return NULL;
-        Py_DECREF(ret);
+        }
     }
 
     textiowrapper_set_decoded_chars(self, NULL);
@@ -1917,6 +1936,7 @@ textiowrapper_read_chunk(textio *self, Py_ssize_t size_hint)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.read
     size as n: Py_ssize_t(accept={int, NoneType}) = -1
     /
@@ -1924,7 +1944,7 @@ _io.TextIOWrapper.read
 
 static PyObject *
 _io_TextIOWrapper_read_impl(textio *self, Py_ssize_t n)
-/*[clinic end generated code: output=7e651ce6cc6a25a6 input=123eecbfe214aeb8]*/
+/*[clinic end generated code: output=7e651ce6cc6a25a6 input=67d14c5661121377]*/
 {
     PyObject *result = NULL, *chunks = NULL;
 
@@ -1978,8 +1998,6 @@ _io_TextIOWrapper_read_impl(textio *self, Py_ssize_t n)
         result = textiowrapper_get_decoded_chars(self, n);
         if (result == NULL)
             goto fail;
-        if (PyUnicode_READY(result) == -1)
-            goto fail;
         remaining -= PyUnicode_GET_LENGTH(result);
 
         /* Keep reading chunks until we have n characters to return */
@@ -2191,8 +2209,6 @@ _textiowrapper_readline(textio *self, Py_ssize_t limit)
             Py_CLEAR(remaining);
             if (line == NULL)
                 goto error;
-            if (PyUnicode_READY(line) == -1)
-                goto error;
         }
 
         ptr = PyUnicode_DATA(line);
@@ -2283,7 +2299,7 @@ _textiowrapper_readline(textio *self, Py_ssize_t limit)
         Py_CLEAR(chunks);
     }
     if (line == NULL) {
-        line = Py_NewRef(&_Py_STR(empty));
+        line = &_Py_STR(empty);
     }
 
     return line;
@@ -2296,6 +2312,7 @@ _textiowrapper_readline(textio *self, Py_ssize_t limit)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.readline
     size: Py_ssize_t = -1
     /
@@ -2303,7 +2320,7 @@ _io.TextIOWrapper.readline
 
 static PyObject *
 _io_TextIOWrapper_readline_impl(textio *self, Py_ssize_t size)
-/*[clinic end generated code: output=344afa98804e8b25 input=56c7172483b36db6]*/
+/*[clinic end generated code: output=344afa98804e8b25 input=b65bab871dc3ddba]*/
 {
     CHECK_ATTACHED(self);
     return _textiowrapper_readline(self, size);
@@ -2442,15 +2459,32 @@ _textiowrapper_encoder_setstate(textio *self, cookie_type *cookie)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.seek
     cookie as cookieObj: object
-    whence: int = 0
+      Zero or an opaque number returned by tell().
+    whence: int(c_default='0') = os.SEEK_SET
+      The relative position to seek from.
     /
+
+Set the stream position, and return the new stream position.
+
+Four operations are supported, given by the following argument
+combinations:
+
+- seek(0, SEEK_SET): Rewind to the start of the stream.
+- seek(cookie, SEEK_SET): Restore a previous position;
+  'cookie' must be a number returned by tell().
+- seek(0, SEEK_END): Fast-forward to the end of the stream.
+- seek(0, SEEK_CUR): Leave the current stream position unchanged.
+
+Any other argument combinations are invalid,
+and may raise exceptions.
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence)
-/*[clinic end generated code: output=0a15679764e2d04d input=0458abeb3d7842be]*/
+/*[clinic end generated code: output=0a15679764e2d04d input=4bea78698be23d7e]*/
 {
     PyObject *posobj;
     cookie_type cookie;
@@ -2502,10 +2536,9 @@ _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence)
             goto fail;
         }
 
-        res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-        if (res == NULL)
+        if (_PyFile_Flush((PyObject *)self) < 0) {
             goto fail;
-        Py_DECREF(res);
+        }
 
         textiowrapper_set_decoded_chars(self, NULL);
         Py_CLEAR(self->snapshot);
@@ -2550,10 +2583,9 @@ _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence)
         goto fail;
     }
 
-    res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-    if (res == NULL)
+    if (_PyFile_Flush((PyObject *)self) < 0) {
         goto fail;
-    Py_DECREF(res);
+    }
 
     /* The strategy of seek() is to go back to the safe start point
      * and replay the effect of read(chars_to_skip) from there.
@@ -2639,12 +2671,18 @@ _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.tell
+
+Return the stream position as an opaque number.
+
+The return value of tell() can be given as input to seek(), to restore a
+previous stream position.
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_tell_impl(textio *self)
-/*[clinic end generated code: output=4f168c08bf34ad5f input=9a2caf88c24f9ddf]*/
+/*[clinic end generated code: output=4f168c08bf34ad5f input=415d6b4e4f8e6e8c]*/
 {
     PyObject *res;
     PyObject *posobj = NULL;
@@ -2672,10 +2710,9 @@ _io_TextIOWrapper_tell_impl(textio *self)
 
     if (_textiowrapper_writeflush(self) < 0)
         return NULL;
-    res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-    if (res == NULL)
+    if (_PyFile_Flush((PyObject *)self) < 0) {
         goto fail;
-    Py_DECREF(res);
+    }
 
     posobj = PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(tell));
     if (posobj == NULL)
@@ -2871,6 +2908,7 @@ _io_TextIOWrapper_tell_impl(textio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.truncate
     pos: object = None
     /
@@ -2878,16 +2916,13 @@ _io.TextIOWrapper.truncate
 
 static PyObject *
 _io_TextIOWrapper_truncate_impl(textio *self, PyObject *pos)
-/*[clinic end generated code: output=90ec2afb9bb7745f input=56ec8baa65aea377]*/
+/*[clinic end generated code: output=90ec2afb9bb7745f input=8bddb320834c93ee]*/
 {
-    PyObject *res;
-
     CHECK_ATTACHED(self)
 
-    res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-    if (res == NULL)
+    if (_PyFile_Flush((PyObject *)self) < 0) {
         return NULL;
-    Py_DECREF(res);
+    }
 
     return PyObject_CallMethodOneArg(self->buffer, &_Py_ID(truncate), pos);
 }
@@ -2913,7 +2948,7 @@ textiowrapper_repr(textio *self)
         }
         goto error;
     }
-    if (_PyObject_LookupAttr((PyObject *) self, &_Py_ID(name), &nameobj) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *) self, &_Py_ID(name), &nameobj) < 0) {
         if (!PyErr_ExceptionMatches(PyExc_ValueError)) {
             goto error;
         }
@@ -2929,7 +2964,7 @@ textiowrapper_repr(textio *self)
         if (res == NULL)
             goto error;
     }
-    if (_PyObject_LookupAttr((PyObject *) self, &_Py_ID(mode), &modeobj) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *) self, &_Py_ID(mode), &modeobj) < 0) {
         goto error;
     }
     if (modeobj != NULL) {
@@ -2961,72 +2996,78 @@ textiowrapper_repr(textio *self)
 /* Inquiries */
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.fileno
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_fileno_impl(textio *self)
-/*[clinic end generated code: output=21490a4c3da13e6c input=c488ca83d0069f9b]*/
+/*[clinic end generated code: output=21490a4c3da13e6c input=515e1196aceb97ab]*/
 {
     CHECK_ATTACHED(self);
     return PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(fileno));
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.seekable
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_seekable_impl(textio *self)
-/*[clinic end generated code: output=ab223dbbcffc0f00 input=8b005ca06e1fca13]*/
+/*[clinic end generated code: output=ab223dbbcffc0f00 input=71c4c092736c549b]*/
 {
     CHECK_ATTACHED(self);
     return PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(seekable));
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.readable
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_readable_impl(textio *self)
-/*[clinic end generated code: output=72ff7ba289a8a91b input=0704ea7e01b0d3eb]*/
+/*[clinic end generated code: output=72ff7ba289a8a91b input=80438d1f01b0a89b]*/
 {
     CHECK_ATTACHED(self);
     return PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(readable));
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.writable
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_writable_impl(textio *self)
-/*[clinic end generated code: output=a728c71790d03200 input=c41740bc9d8636e8]*/
+/*[clinic end generated code: output=a728c71790d03200 input=9d6c22befb0c340a]*/
 {
     CHECK_ATTACHED(self);
     return PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(writable));
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.isatty
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_isatty_impl(textio *self)
-/*[clinic end generated code: output=12be1a35bace882e input=fb68d9f2c99bbfff]*/
+/*[clinic end generated code: output=12be1a35bace882e input=7f83ff04d4d1733d]*/
 {
     CHECK_ATTACHED(self);
     return PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(isatty));
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.flush
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_flush_impl(textio *self)
-/*[clinic end generated code: output=59de9165f9c2e4d2 input=928c60590694ab85]*/
+/*[clinic end generated code: output=59de9165f9c2e4d2 input=3ac3bf521bfed59d]*/
 {
     CHECK_ATTACHED(self);
     CHECK_CLOSED(self);
@@ -3037,12 +3078,13 @@ _io_TextIOWrapper_flush_impl(textio *self)
 }
 
 /*[clinic input]
+@critical_section
 _io.TextIOWrapper.close
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_close_impl(textio *self)
-/*[clinic end generated code: output=056ccf8b4876e4f4 input=9c2114315eae1948]*/
+/*[clinic end generated code: output=056ccf8b4876e4f4 input=8e12d7079d5ac5c1]*/
 {
     PyObject *res;
     int r;
@@ -3071,13 +3113,9 @@ _io_TextIOWrapper_close_impl(textio *self)
                 PyErr_Clear();
             }
         }
-        res = PyObject_CallMethodNoArgs((PyObject *)self, &_Py_ID(flush));
-        if (res == NULL) {
+        if (_PyFile_Flush((PyObject *)self) < 0) {
             exc = PyErr_GetRaisedException();
         }
-        else {
-            Py_DECREF(res);
-        }
 
         res = PyObject_CallMethodNoArgs(self->buffer, &_Py_ID(close));
         if (exc != NULL) {
@@ -3112,7 +3150,7 @@ textiowrapper_iternext(textio *self)
         }
     }
 
-    if (line == NULL || PyUnicode_READY(line) == -1)
+    if (line == NULL)
         return NULL;
 
     if (PyUnicode_GET_LENGTH(line) == 0) {
@@ -3127,26 +3165,46 @@ textiowrapper_iternext(textio *self)
 }
 
 static PyObject *
-textiowrapper_name_get(textio *self, void *context)
+textiowrapper_name_get_impl(textio *self, void *context)
 {
     CHECK_ATTACHED(self);
     return PyObject_GetAttr(self->buffer, &_Py_ID(name));
 }
 
 static PyObject *
-textiowrapper_closed_get(textio *self, void *context)
+textiowrapper_name_get(textio *self, void *context)
+{
+    PyObject *result = NULL;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = textiowrapper_name_get_impl(self, context);
+    Py_END_CRITICAL_SECTION();
+    return result;
+}
+
+static PyObject *
+textiowrapper_closed_get_impl(textio *self, void *context)
 {
     CHECK_ATTACHED(self);
     return PyObject_GetAttr(self->buffer, &_Py_ID(closed));
 }
 
 static PyObject *
-textiowrapper_newlines_get(textio *self, void *context)
+textiowrapper_closed_get(textio *self, void *context)
+{
+    PyObject *result = NULL;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = textiowrapper_closed_get_impl(self, context);
+    Py_END_CRITICAL_SECTION();
+    return result;
+}
+
+static PyObject *
+textiowrapper_newlines_get_impl(textio *self, void *context)
 {
     PyObject *res;
     CHECK_ATTACHED(self);
     if (self->decoder == NULL ||
-        _PyObject_LookupAttr(self->decoder, &_Py_ID(newlines), &res) == 0)
+        PyObject_GetOptionalAttr(self->decoder, &_Py_ID(newlines), &res) == 0)
     {
         Py_RETURN_NONE;
     }
@@ -3154,21 +3212,51 @@ textiowrapper_newlines_get(textio *self, void *context)
 }
 
 static PyObject *
-textiowrapper_errors_get(textio *self, void *context)
+textiowrapper_newlines_get(textio *self, void *context)
+{
+    PyObject *result = NULL;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = textiowrapper_newlines_get_impl(self, context);
+    Py_END_CRITICAL_SECTION();
+    return result;
+}
+
+static PyObject *
+textiowrapper_errors_get_impl(textio *self, void *context)
 {
     CHECK_INITIALIZED(self);
     return Py_NewRef(self->errors);
 }
 
 static PyObject *
-textiowrapper_chunk_size_get(textio *self, void *context)
+textiowrapper_errors_get(textio *self, void *context)
+{
+    PyObject *result = NULL;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = textiowrapper_errors_get_impl(self, context);
+    Py_END_CRITICAL_SECTION();
+    return result;
+}
+
+static PyObject *
+textiowrapper_chunk_size_get_impl(textio *self, void *context)
 {
     CHECK_ATTACHED(self);
     return PyLong_FromSsize_t(self->chunk_size);
 }
 
+static PyObject *
+textiowrapper_chunk_size_get(textio *self, void *context)
+{
+    PyObject *result = NULL;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = textiowrapper_chunk_size_get_impl(self, context);
+    Py_END_CRITICAL_SECTION();
+    return result;
+}
+
 static int
-textiowrapper_chunk_size_set(textio *self, PyObject *arg, void *context)
+textiowrapper_chunk_size_set_impl(textio *self, PyObject *arg, void *context)
 {
     Py_ssize_t n;
     CHECK_ATTACHED_INT(self);
@@ -3188,6 +3276,16 @@ textiowrapper_chunk_size_set(textio *self, PyObject *arg, void *context)
     return 0;
 }
 
+static int
+textiowrapper_chunk_size_set(textio *self, PyObject *arg, void *context)
+{
+    int result = 0;
+    Py_BEGIN_CRITICAL_SECTION(self);
+    result = textiowrapper_chunk_size_set_impl(self, arg, context);
+    Py_END_CRITICAL_SECTION();
+    return result;
+}
+
 static PyMethodDef incrementalnewlinedecoder_methods[] = {
     _IO_INCREMENTALNEWLINEDECODER_DECODE_METHODDEF
     _IO_INCREMENTALNEWLINEDECODER_GETSTATE_METHODDEF
@@ -3246,13 +3344,13 @@ static PyMethodDef textiowrapper_methods[] = {
 };
 
 static PyMemberDef textiowrapper_members[] = {
-    {"encoding", T_OBJECT, offsetof(textio, encoding), READONLY},
-    {"buffer", T_OBJECT, offsetof(textio, buffer), READONLY},
-    {"line_buffering", T_BOOL, offsetof(textio, line_buffering), READONLY},
-    {"write_through", T_BOOL, offsetof(textio, write_through), READONLY},
-    {"_finalizing", T_BOOL, offsetof(textio, finalizing), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(textio, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(textio, dict), READONLY},
+    {"encoding", _Py_T_OBJECT, offsetof(textio, encoding), Py_READONLY},
+    {"buffer", _Py_T_OBJECT, offsetof(textio, buffer), Py_READONLY},
+    {"line_buffering", Py_T_BOOL, offsetof(textio, line_buffering), Py_READONLY},
+    {"write_through", Py_T_BOOL, offsetof(textio, write_through), Py_READONLY},
+    {"_finalizing", Py_T_BOOL, offsetof(textio, finalizing), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(textio, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(textio, dict), Py_READONLY},
     {NULL}
 };
 
diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
index 15f3053957da61..6680488b740cfc 100644
--- a/Modules/_io/winconsoleio.c
+++ b/Modules/_io/winconsoleio.c
@@ -6,14 +6,14 @@
     Written by Steve Dower
 */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_fileutils.h"     // _Py_BEGIN_SUPPRESS_IPH
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
 
 #ifdef HAVE_WINDOWS_CONSOLE_IO
 
-#include "structmember.h"         // PyMemberDef
+
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -134,6 +134,23 @@ char _PyIO_get_console_type(PyObject *path_or_fd) {
     return m;
 }
 
+static DWORD
+_find_last_utf8_boundary(const char *buf, DWORD len)
+{
+    /* This function never returns 0, returns the original len instead */
+    DWORD count = 1;
+    if (len == 0 || (buf[len - 1] & 0x80) == 0) {
+        return len;
+    }
+    for (;; count++) {
+        if (count > 3 || count >= len) {
+            return len;
+        }
+        if ((buf[len - count] & 0xc0) != 0x80) {
+            return len - count;
+        }
+    }
+}
 
 /*[clinic input]
 module _io
@@ -281,7 +298,7 @@ _io__WindowsConsoleIO___init___impl(winconsoleio *self, PyObject *nameobj,
             self->fd = -1;
     }
 
-    fd = _PyLong_AsInt(nameobj);
+    fd = PyLong_AsInt(nameobj);
     if (fd < 0) {
         if (!PyErr_Occurred()) {
             PyErr_SetString(PyExc_ValueError,
@@ -378,8 +395,8 @@ _io__WindowsConsoleIO___init___impl(winconsoleio *self, PyObject *nameobj,
         else
             self->fd = _Py_open_osfhandle_noraise(handle, _O_RDONLY | _O_BINARY);
         if (self->fd < 0) {
-            CloseHandle(handle);
             PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, nameobj);
+            CloseHandle(handle);
             goto error;
         }
     }
@@ -975,7 +992,7 @@ _io__WindowsConsoleIO_write_impl(winconsoleio *self, PyTypeObject *cls,
 {
     BOOL res = TRUE;
     wchar_t *wbuf;
-    DWORD len, wlen, orig_len, n = 0;
+    DWORD len, wlen, n = 0;
     HANDLE handle;
 
     if (self->fd == -1)
@@ -1007,21 +1024,8 @@ _io__WindowsConsoleIO_write_impl(winconsoleio *self, PyTypeObject *cls,
        have to reduce and recalculate. */
     while (wlen > 32766 / sizeof(wchar_t)) {
         len /= 2;
-        orig_len = len;
-        /* Reduce the length until we hit the final byte of a UTF-8 sequence
-         * (top bit is unset). Fix for github issue 82052.
-         */
-        while (len > 0 && (((char *)b->buf)[len-1] & 0x80) != 0)
-            --len;
-        /* If we hit a length of 0, something has gone wrong. This shouldn't
-         * be possible, as valid UTF-8 can have at most 3 non-final bytes
-         * before a final one, and our buffer is way longer than that.
-         * But to be on the safe side, if we hit this issue we just restore
-         * the original length and let the console API sort it out.
-         */
-        if (len == 0) {
-            len = orig_len;
-        }
+        /* Fix for github issues gh-110913 and gh-82052. */
+        len = _find_last_utf8_boundary(b->buf, len);
         wlen = MultiByteToWideChar(CP_UTF8, 0, b->buf, len, NULL, 0);
     }
     Py_END_ALLOW_THREADS
@@ -1142,10 +1146,10 @@ static PyGetSetDef winconsoleio_getsetlist[] = {
 };
 
 static PyMemberDef winconsoleio_members[] = {
-    {"_blksize", T_UINT, offsetof(winconsoleio, blksize), 0},
-    {"_finalizing", T_BOOL, offsetof(winconsoleio, finalizing), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(winconsoleio, weakreflist), READONLY},
-    {"__dictoffset__", T_PYSSIZET, offsetof(winconsoleio, dict), READONLY},
+    {"_blksize", Py_T_UINT, offsetof(winconsoleio, blksize), 0},
+    {"_finalizing", Py_T_BOOL, offsetof(winconsoleio, finalizing), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(winconsoleio, weakreflist), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(winconsoleio, dict), Py_READONLY},
     {NULL}
 };
 
diff --git a/Modules/_json.c b/Modules/_json.c
index c90de05b046b00..0b1bfe34ad9304 100644
--- a/Modules/_json.c
+++ b/Modules/_json.c
@@ -11,8 +11,8 @@
 #include "Python.h"
 #include "pycore_ceval.h"           // _Py_EnterRecursiveCall()
 #include "pycore_runtime.h"         // _PyRuntime
-#include "structmember.h"           // PyMemberDef
-#include "pycore_global_objects.h"  // _Py_ID()
+
+#include "pycore_global_strings.h"  // _Py_ID()
 #include <stdbool.h>                // bool
 
 
@@ -24,16 +24,15 @@ typedef struct _PyScannerObject {
     PyObject *parse_float;
     PyObject *parse_int;
     PyObject *parse_constant;
-    PyObject *memo;
 } PyScannerObject;
 
 static PyMemberDef scanner_members[] = {
-    {"strict", T_BOOL, offsetof(PyScannerObject, strict), READONLY, "strict"},
-    {"object_hook", T_OBJECT, offsetof(PyScannerObject, object_hook), READONLY, "object_hook"},
-    {"object_pairs_hook", T_OBJECT, offsetof(PyScannerObject, object_pairs_hook), READONLY},
-    {"parse_float", T_OBJECT, offsetof(PyScannerObject, parse_float), READONLY, "parse_float"},
-    {"parse_int", T_OBJECT, offsetof(PyScannerObject, parse_int), READONLY, "parse_int"},
-    {"parse_constant", T_OBJECT, offsetof(PyScannerObject, parse_constant), READONLY, "parse_constant"},
+    {"strict", Py_T_BOOL, offsetof(PyScannerObject, strict), Py_READONLY, "strict"},
+    {"object_hook", _Py_T_OBJECT, offsetof(PyScannerObject, object_hook), Py_READONLY, "object_hook"},
+    {"object_pairs_hook", _Py_T_OBJECT, offsetof(PyScannerObject, object_pairs_hook), Py_READONLY},
+    {"parse_float", _Py_T_OBJECT, offsetof(PyScannerObject, parse_float), Py_READONLY, "parse_float"},
+    {"parse_int", _Py_T_OBJECT, offsetof(PyScannerObject, parse_int), Py_READONLY, "parse_int"},
+    {"parse_constant", _Py_T_OBJECT, offsetof(PyScannerObject, parse_constant), Py_READONLY, "parse_constant"},
     {NULL}
 };
 
@@ -52,14 +51,14 @@ typedef struct _PyEncoderObject {
 } PyEncoderObject;
 
 static PyMemberDef encoder_members[] = {
-    {"markers", T_OBJECT, offsetof(PyEncoderObject, markers), READONLY, "markers"},
-    {"default", T_OBJECT, offsetof(PyEncoderObject, defaultfn), READONLY, "default"},
-    {"encoder", T_OBJECT, offsetof(PyEncoderObject, encoder), READONLY, "encoder"},
-    {"indent", T_OBJECT, offsetof(PyEncoderObject, indent), READONLY, "indent"},
-    {"key_separator", T_OBJECT, offsetof(PyEncoderObject, key_separator), READONLY, "key_separator"},
-    {"item_separator", T_OBJECT, offsetof(PyEncoderObject, item_separator), READONLY, "item_separator"},
-    {"sort_keys", T_BOOL, offsetof(PyEncoderObject, sort_keys), READONLY, "sort_keys"},
-    {"skipkeys", T_BOOL, offsetof(PyEncoderObject, skipkeys), READONLY, "skipkeys"},
+    {"markers", _Py_T_OBJECT, offsetof(PyEncoderObject, markers), Py_READONLY, "markers"},
+    {"default", _Py_T_OBJECT, offsetof(PyEncoderObject, defaultfn), Py_READONLY, "default"},
+    {"encoder", _Py_T_OBJECT, offsetof(PyEncoderObject, encoder), Py_READONLY, "encoder"},
+    {"indent", _Py_T_OBJECT, offsetof(PyEncoderObject, indent), Py_READONLY, "indent"},
+    {"key_separator", _Py_T_OBJECT, offsetof(PyEncoderObject, key_separator), Py_READONLY, "key_separator"},
+    {"item_separator", _Py_T_OBJECT, offsetof(PyEncoderObject, item_separator), Py_READONLY, "item_separator"},
+    {"sort_keys", Py_T_BOOL, offsetof(PyEncoderObject, sort_keys), Py_READONLY, "sort_keys"},
+    {"skipkeys", Py_T_BOOL, offsetof(PyEncoderObject, skipkeys), Py_READONLY, "skipkeys"},
     {NULL}
 };
 
@@ -70,7 +69,7 @@ ascii_escape_unicode(PyObject *pystr);
 static PyObject *
 py_encode_basestring_ascii(PyObject* Py_UNUSED(self), PyObject *pystr);
 static PyObject *
-scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr);
+scan_once_unicode(PyScannerObject *s, PyObject *memo, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr);
 static PyObject *
 _build_rval_index_tuple(PyObject *rval, Py_ssize_t idx);
 static PyObject *
@@ -152,9 +151,6 @@ ascii_escape_unicode(PyObject *pystr)
     Py_UCS1 *output;
     int kind;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return NULL;
-
     input_chars = PyUnicode_GET_LENGTH(pystr);
     input = PyUnicode_DATA(pystr);
     kind = PyUnicode_KIND(pystr);
@@ -218,9 +214,6 @@ escape_unicode(PyObject *pystr)
     int kind;
     Py_UCS4 maxchar;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return NULL;
-
     maxchar = PyUnicode_MAX_CHAR_VALUE(pystr);
     input_chars = PyUnicode_GET_LENGTH(pystr);
     input = PyUnicode_DATA(pystr);
@@ -377,9 +370,6 @@ scanstring_unicode(PyObject *pystr, Py_ssize_t end, int strict, Py_ssize_t *next
     const void *buf;
     int kind;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return 0;
-
     _PyUnicodeWriter writer;
     _PyUnicodeWriter_Init(&writer);
     writer.overallocate = 1;
@@ -640,7 +630,6 @@ scanner_traverse(PyScannerObject *self, visitproc visit, void *arg)
     Py_VISIT(self->parse_float);
     Py_VISIT(self->parse_int);
     Py_VISIT(self->parse_constant);
-    Py_VISIT(self->memo);
     return 0;
 }
 
@@ -652,12 +641,11 @@ scanner_clear(PyScannerObject *self)
     Py_CLEAR(self->parse_float);
     Py_CLEAR(self->parse_int);
     Py_CLEAR(self->parse_constant);
-    Py_CLEAR(self->memo);
     return 0;
 }
 
 static PyObject *
-_parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
+_parse_object_unicode(PyScannerObject *s, PyObject *memo, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
 {
     /* Read a JSON object from PyUnicode pystr.
     idx is the index of the first character after the opening curly brace.
@@ -675,9 +663,6 @@ _parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ss
     int has_pairs_hook = (s->object_pairs_hook != Py_None);
     Py_ssize_t next_idx;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return NULL;
-
     str = PyUnicode_DATA(pystr);
     kind = PyUnicode_KIND(pystr);
     end_idx = PyUnicode_GET_LENGTH(pystr) - 1;
@@ -705,7 +690,7 @@ _parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ss
             key = scanstring_unicode(pystr, idx + 1, s->strict, &next_idx);
             if (key == NULL)
                 goto bail;
-            memokey = PyDict_SetDefault(s->memo, key, key);
+            memokey = PyDict_SetDefault(memo, key, key);
             if (memokey == NULL) {
                 goto bail;
             }
@@ -722,7 +707,7 @@ _parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ss
             while (idx <= end_idx && IS_WHITESPACE(PyUnicode_READ(kind, str, idx))) idx++;
 
             /* read any JSON term */
-            val = scan_once_unicode(s, pystr, idx, &next_idx);
+            val = scan_once_unicode(s, memo, pystr, idx, &next_idx);
             if (val == NULL)
                 goto bail;
 
@@ -786,7 +771,7 @@ _parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ss
 }
 
 static PyObject *
-_parse_array_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
+_parse_array_unicode(PyScannerObject *s, PyObject *memo, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
     /* Read a JSON array from PyUnicode pystr.
     idx is the index of the first character after the opening brace.
     *next_idx_ptr is a return-by-reference index to the first character after
@@ -801,9 +786,6 @@ _parse_array_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssi
     PyObject *rval;
     Py_ssize_t next_idx;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return NULL;
-
     rval = PyList_New(0);
     if (rval == NULL)
         return NULL;
@@ -820,7 +802,7 @@ _parse_array_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssi
         while (1) {
 
             /* read any JSON term  */
-            val = scan_once_unicode(s, pystr, idx, &next_idx);
+            val = scan_once_unicode(s, memo, pystr, idx, &next_idx);
             if (val == NULL)
                 goto bail;
 
@@ -906,9 +888,6 @@ _match_number_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t start, Py_
     PyObject *numstr = NULL;
     PyObject *custom_func;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return NULL;
-
     str = PyUnicode_DATA(pystr);
     kind = PyUnicode_KIND(pystr);
     end_idx = PyUnicode_GET_LENGTH(pystr) - 1;
@@ -1004,7 +983,7 @@ _match_number_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t start, Py_
 }
 
 static PyObject *
-scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
+scan_once_unicode(PyScannerObject *s, PyObject *memo, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
 {
     /* Read one JSON term (of any kind) from PyUnicode pystr.
     idx is the index of the first character of the term
@@ -1018,9 +997,6 @@ scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_
     int kind;
     Py_ssize_t length;
 
-    if (PyUnicode_READY(pystr) == -1)
-        return NULL;
-
     str = PyUnicode_DATA(pystr);
     kind = PyUnicode_KIND(pystr);
     length = PyUnicode_GET_LENGTH(pystr);
@@ -1043,7 +1019,7 @@ scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_
             if (_Py_EnterRecursiveCall(" while decoding a JSON object "
                                        "from a unicode string"))
                 return NULL;
-            res = _parse_object_unicode(s, pystr, idx + 1, next_idx_ptr);
+            res = _parse_object_unicode(s, memo, pystr, idx + 1, next_idx_ptr);
             _Py_LeaveRecursiveCall();
             return res;
         case '[':
@@ -1051,7 +1027,7 @@ scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_
             if (_Py_EnterRecursiveCall(" while decoding a JSON array "
                                        "from a unicode string"))
                 return NULL;
-            res = _parse_array_unicode(s, pystr, idx + 1, next_idx_ptr);
+            res = _parse_array_unicode(s, memo, pystr, idx + 1, next_idx_ptr);
             _Py_LeaveRecursiveCall();
             return res;
         case 'n':
@@ -1127,16 +1103,19 @@ scanner_call(PyScannerObject *self, PyObject *args, PyObject *kwds)
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "On:scan_once", kwlist, &pystr, &idx))
         return NULL;
 
-    if (PyUnicode_Check(pystr)) {
-        rval = scan_once_unicode(self, pystr, idx, &next_idx);
-    }
-    else {
+    if (!PyUnicode_Check(pystr)) {
         PyErr_Format(PyExc_TypeError,
-                 "first argument must be a string, not %.80s",
-                 Py_TYPE(pystr)->tp_name);
+                     "first argument must be a string, not %.80s",
+                     Py_TYPE(pystr)->tp_name);
+        return NULL;
+    }
+
+    PyObject *memo = PyDict_New();
+    if (memo == NULL) {
         return NULL;
     }
-    PyDict_Clear(self->memo);
+    rval = scan_once_unicode(self, memo, pystr, idx, &next_idx);
+    Py_DECREF(memo);
     if (rval == NULL)
         return NULL;
     return _build_rval_index_tuple(rval, next_idx);
@@ -1158,10 +1137,6 @@ scanner_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    s->memo = PyDict_New();
-    if (s->memo == NULL)
-        goto bail;
-
     /* All of these will fail "gracefully" so we don't need to verify them */
     strict = PyObject_GetAttrString(ctx, "strict");
     if (strict == NULL)
@@ -1298,13 +1273,13 @@ _encoded_const(PyObject *obj)
 {
     /* Return the JSON string representation of None, True, False */
     if (obj == Py_None) {
-        return Py_NewRef(&_Py_ID(null));
+        return &_Py_ID(null);
     }
     else if (obj == Py_True) {
-        return Py_NewRef(&_Py_ID(true));
+        return &_Py_ID(true);
     }
     else if (obj == Py_False) {
-        return Py_NewRef(&_Py_ID(false));
+        return &_Py_ID(false);
     }
     else {
         PyErr_SetString(PyExc_ValueError, "not a const");
@@ -1777,22 +1752,12 @@ static int
 _json_exec(PyObject *module)
 {
     PyObject *PyScannerType = PyType_FromSpec(&PyScannerType_spec);
-    if (PyScannerType == NULL) {
-        return -1;
-    }
-    int rc = PyModule_AddObjectRef(module, "make_scanner", PyScannerType);
-    Py_DECREF(PyScannerType);
-    if (rc < 0) {
+    if (PyModule_Add(module, "make_scanner", PyScannerType) < 0) {
         return -1;
     }
 
     PyObject *PyEncoderType = PyType_FromSpec(&PyEncoderType_spec);
-    if (PyEncoderType == NULL) {
-        return -1;
-    }
-    rc = PyModule_AddObjectRef(module, "make_encoder", PyEncoderType);
-    Py_DECREF(PyEncoderType);
-    if (rc < 0) {
+    if (PyModule_Add(module, "make_encoder", PyEncoderType) < 0) {
         return -1;
     }
 
diff --git a/Modules/_localemodule.c b/Modules/_localemodule.c
index 1ada7305117bb7..fe8e4c5e30035b 100644
--- a/Modules/_localemodule.c
+++ b/Modules/_localemodule.c
@@ -9,36 +9,26 @@ This software comes with no warranty. Use at your own risk.
 
 ******************************************************************/
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
-#include "pycore_fileutils.h"
-
-#include <stdio.h>
-#include <locale.h>
-#include <string.h>
-#include <ctype.h>
+#include "pycore_fileutils.h"     // _Py_GetLocaleconvNumeric()
+#include "pycore_pymem.h"         // _PyMem_Strdup()
 
+#include <locale.h>               // setlocale()
+#include <string.h>               // strlen()
 #ifdef HAVE_ERRNO_H
-#include <errno.h>
+#  include <errno.h>              // errno
 #endif
-
 #ifdef HAVE_LANGINFO_H
-#include <langinfo.h>
+#  include <langinfo.h>           // nl_langinfo()
 #endif
-
 #ifdef HAVE_LIBINTL_H
-#include <libintl.h>
+#  include <libintl.h>
 #endif
-
-#ifdef HAVE_WCHAR_H
-#include <wchar.h>
-#endif
-
-#if defined(MS_WINDOWS)
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-#include <windows.h>
+#ifdef MS_WINDOWS
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#  include <windows.h>
 #endif
 
 PyDoc_STRVAR(locale__doc__, "Support for POSIX locales.");
@@ -737,8 +727,8 @@ _locale_bindtextdomain_impl(PyObject *module, const char *domain,
     }
     current_dirname = bindtextdomain(domain, dirname);
     if (current_dirname == NULL) {
-        Py_XDECREF(dirname_bytes);
         PyErr_SetFromErrno(PyExc_OSError);
+        Py_XDECREF(dirname_bytes);
         return NULL;
     }
     result = PyUnicode_DecodeLocale(current_dirname, NULL);
@@ -845,12 +835,7 @@ _locale_exec(PyObject *module)
 
     _locale_state *state = get_locale_state(module);
     state->Error = PyErr_NewException("locale.Error", NULL, NULL);
-    if (state->Error == NULL) {
-        return -1;
-    }
-    Py_INCREF(get_locale_state(module)->Error);
-    if (PyModule_AddObject(module, "Error", get_locale_state(module)->Error) < 0) {
-        Py_DECREF(get_locale_state(module)->Error);
+    if (PyModule_AddObjectRef(module, "Error", state->Error) < 0) {
         return -1;
     }
 
diff --git a/Modules/_lsprof.c b/Modules/_lsprof.c
index 1c84f66ee6f579..8f09204097529f 100644
--- a/Modules/_lsprof.c
+++ b/Modules/_lsprof.c
@@ -4,7 +4,9 @@
 
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"         // _PyEval_SetProfile()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+
 #include "rotatingtree.h"
 
 /************************************************************/
@@ -678,6 +680,7 @@ static const struct {
 } callback_table[] = {
     {PY_MONITORING_EVENT_PY_START, "_pystart_callback"},
     {PY_MONITORING_EVENT_PY_RESUME, "_pystart_callback"},
+    {PY_MONITORING_EVENT_PY_THROW, "_pystart_callback"},
     {PY_MONITORING_EVENT_PY_RETURN, "_pyreturn_callback"},
     {PY_MONITORING_EVENT_PY_YIELD, "_pyreturn_callback"},
     {PY_MONITORING_EVENT_PY_UNWIND, "_pyreturn_callback"},
@@ -843,7 +846,7 @@ profiler_dealloc(ProfilerObject *op)
     if (op->flags & POF_ENABLED) {
         PyThreadState *tstate = _PyThreadState_GET();
         if (_PyEval_SetProfile(tstate, NULL, NULL) < 0) {
-            _PyErr_WriteUnraisableMsg("When destroying _lsprof profiler", NULL);
+            PyErr_FormatUnraisable("Exception ignored when destroying _lsprof profiler");
         }
     }
 
diff --git a/Modules/_lzmamodule.c b/Modules/_lzmamodule.c
index e34fbad230d51a..eb90c308d16d19 100644
--- a/Modules/_lzmamodule.c
+++ b/Modules/_lzmamodule.c
@@ -5,10 +5,12 @@
 
 */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
 
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
 
 #include <stdlib.h>               // free()
 #include <string.h>
@@ -242,15 +244,10 @@ parse_filter_spec_lzma(_lzma_state *state, PyObject *spec)
     /* First, fill in default values for all the options using a preset.
        Then, override the defaults with any values given by the caller. */
 
-    preset_obj = PyMapping_GetItemString(spec, "preset");
-    if (preset_obj == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_KeyError)) {
-            PyErr_Clear();
-        }
-        else {
-            return NULL;
-        }
-    } else {
+    if (PyMapping_GetOptionalItemString(spec, "preset", &preset_obj) < 0) {
+        return NULL;
+    }
+    if (preset_obj != NULL) {
         int ok = uint32_converter(preset_obj, &preset);
         Py_DECREF(preset_obj);
         if (!ok) {
@@ -347,11 +344,12 @@ lzma_filter_converter(_lzma_state *state, PyObject *spec, void *ptr)
                         "Filter specifier must be a dict or dict-like object");
         return 0;
     }
-    id_obj = PyMapping_GetItemString(spec, "id");
+    if (PyMapping_GetOptionalItemString(spec, "id", &id_obj) < 0) {
+        return 0;
+    }
     if (id_obj == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_KeyError))
-            PyErr_SetString(PyExc_ValueError,
-                            "Filter specifier must have an \"id\" entry");
+        PyErr_SetString(PyExc_ValueError,
+                        "Filter specifier must have an \"id\" entry");
         return 0;
     }
     f->id = PyLong_AsUnsignedLongLong(id_obj);
@@ -1344,13 +1342,13 @@ PyDoc_STRVAR(Decompressor_unused_data_doc,
 "Data found after the end of the compressed stream.");
 
 static PyMemberDef Decompressor_members[] = {
-    {"check", T_INT, offsetof(Decompressor, check), READONLY,
+    {"check", Py_T_INT, offsetof(Decompressor, check), Py_READONLY,
      Decompressor_check_doc},
-    {"eof", T_BOOL, offsetof(Decompressor, eof), READONLY,
+    {"eof", Py_T_BOOL, offsetof(Decompressor, eof), Py_READONLY,
      Decompressor_eof_doc},
-    {"needs_input", T_BOOL, offsetof(Decompressor, needs_input), READONLY,
+    {"needs_input", Py_T_BOOL, offsetof(Decompressor, needs_input), Py_READONLY,
      Decompressor_needs_input_doc},
-    {"unused_data", T_OBJECT_EX, offsetof(Decompressor, unused_data), READONLY,
+    {"unused_data", Py_T_OBJECT_EX, offsetof(Decompressor, unused_data), Py_READONLY,
      Decompressor_unused_data_doc},
     {NULL}
 };
@@ -1504,15 +1502,7 @@ _lzma__decode_filter_properties_impl(PyObject *module, lzma_vli filter_id,
 static int
 module_add_int_constant(PyObject *m, const char *name, long long value)
 {
-    PyObject *o = PyLong_FromLongLong(value);
-    if (o == NULL) {
-        return -1;
-    }
-    if (PyModule_AddObject(m, name, o) == 0) {
-        return 0;
-    }
-    Py_DECREF(o);
-    return -1;
+    return PyModule_Add(m, name, PyLong_FromLongLong(value));
 }
 
 static int
diff --git a/Modules/_multiprocessing/clinic/multiprocessing.c.h b/Modules/_multiprocessing/clinic/multiprocessing.c.h
index 885cd5c2fff8ea..6d4f5c2afcfd39 100644
--- a/Modules/_multiprocessing/clinic/multiprocessing.c.h
+++ b/Modules/_multiprocessing/clinic/multiprocessing.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 #if defined(MS_WINDOWS)
 
@@ -66,7 +62,7 @@ _multiprocessing_recv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!handle && PyErr_Occurred()) {
         goto exit;
     }
-    size = _PyLong_AsInt(args[1]);
+    size = PyLong_AsInt(args[1]);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -108,10 +104,6 @@ _multiprocessing_send(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[1], &buf, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buf, 'C')) {
-        _PyArg_BadArgument("send", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _multiprocessing_send_impl(module, handle, &buf);
 
 exit:
@@ -172,4 +164,4 @@ _multiprocessing_sem_unlink(PyObject *module, PyObject *arg)
 #ifndef _MULTIPROCESSING_SEND_METHODDEF
     #define _MULTIPROCESSING_SEND_METHODDEF
 #endif /* !defined(_MULTIPROCESSING_SEND_METHODDEF) */
-/*[clinic end generated code: output=4a6afc67c1f5ec85 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=73b4cb8428d816da input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/clinic/posixshmem.c.h b/Modules/_multiprocessing/clinic/posixshmem.c.h
index df2aa29cfe626e..1b894ea4c67adc 100644
--- a/Modules/_multiprocessing/clinic/posixshmem.c.h
+++ b/Modules/_multiprocessing/clinic/posixshmem.c.h
@@ -2,12 +2,6 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
 #if defined(HAVE_SHM_OPEN)
 
 PyDoc_STRVAR(_posixshmem_shm_open__doc__,
@@ -17,72 +11,25 @@ PyDoc_STRVAR(_posixshmem_shm_open__doc__,
 "Open a shared memory object.  Returns a file descriptor (integer).");
 
 #define _POSIXSHMEM_SHM_OPEN_METHODDEF    \
-    {"shm_open", _PyCFunction_CAST(_posixshmem_shm_open), METH_FASTCALL|METH_KEYWORDS, _posixshmem_shm_open__doc__},
+    {"shm_open", (PyCFunction)(void(*)(void))_posixshmem_shm_open, METH_VARARGS|METH_KEYWORDS, _posixshmem_shm_open__doc__},
 
 static int
 _posixshmem_shm_open_impl(PyObject *module, PyObject *path, int flags,
                           int mode);
 
 static PyObject *
-_posixshmem_shm_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+_posixshmem_shm_open(PyObject *module, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(path), &_Py_ID(flags), &_Py_ID(mode), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"path", "flags", "mode", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "shm_open",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    static char *_keywords[] = {"path", "flags", "mode", NULL};
     PyObject *path;
     int flags;
     int mode = 511;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 3, 0, argsbuf);
-    if (!args) {
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Ui|i:shm_open", _keywords,
+        &path, &flags, &mode))
         goto exit;
-    }
-    if (!PyUnicode_Check(args[0])) {
-        _PyArg_BadArgument("shm_open", "argument 'path'", "str", args[0]);
-        goto exit;
-    }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
-    path = args[0];
-    flags = _PyLong_AsInt(args[1]);
-    if (flags == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    mode = _PyLong_AsInt(args[2]);
-    if (mode == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional_pos:
     _return_value = _posixshmem_shm_open_impl(module, path, flags, mode);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
@@ -108,55 +55,21 @@ PyDoc_STRVAR(_posixshmem_shm_unlink__doc__,
 "region.");
 
 #define _POSIXSHMEM_SHM_UNLINK_METHODDEF    \
-    {"shm_unlink", _PyCFunction_CAST(_posixshmem_shm_unlink), METH_FASTCALL|METH_KEYWORDS, _posixshmem_shm_unlink__doc__},
+    {"shm_unlink", (PyCFunction)(void(*)(void))_posixshmem_shm_unlink, METH_VARARGS|METH_KEYWORDS, _posixshmem_shm_unlink__doc__},
 
 static PyObject *
 _posixshmem_shm_unlink_impl(PyObject *module, PyObject *path);
 
 static PyObject *
-_posixshmem_shm_unlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+_posixshmem_shm_unlink(PyObject *module, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(path), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"path", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "shm_unlink",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[1];
+    static char *_keywords[] = {"path", NULL};
     PyObject *path;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[0])) {
-        _PyArg_BadArgument("shm_unlink", "argument 'path'", "str", args[0]);
-        goto exit;
-    }
-    if (PyUnicode_READY(args[0]) == -1) {
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "U:shm_unlink", _keywords,
+        &path))
         goto exit;
-    }
-    path = args[0];
     return_value = _posixshmem_shm_unlink_impl(module, path);
 
 exit:
@@ -172,4 +85,4 @@ _posixshmem_shm_unlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs
 #ifndef _POSIXSHMEM_SHM_UNLINK_METHODDEF
     #define _POSIXSHMEM_SHM_UNLINK_METHODDEF
 #endif /* !defined(_POSIXSHMEM_SHM_UNLINK_METHODDEF) */
-/*[clinic end generated code: output=3f6fee283d5fd0e9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=be0661dbed83ea23 input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/clinic/semaphore.c.h b/Modules/_multiprocessing/clinic/semaphore.c.h
index 35347169bc1591..7c855113113c20 100644
--- a/Modules/_multiprocessing/clinic/semaphore.c.h
+++ b/Modules/_multiprocessing/clinic/semaphore.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 #if defined(HAVE_MP_SEMAPHORE) && defined(MS_WINDOWS)
 
@@ -250,15 +250,15 @@ _multiprocessing_SemLock(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     if (!fastargs) {
         goto exit;
     }
-    kind = _PyLong_AsInt(fastargs[0]);
+    kind = PyLong_AsInt(fastargs[0]);
     if (kind == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    value = _PyLong_AsInt(fastargs[1]);
+    value = PyLong_AsInt(fastargs[1]);
     if (value == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    maxvalue = _PyLong_AsInt(fastargs[2]);
+    maxvalue = PyLong_AsInt(fastargs[2]);
     if (maxvalue == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -542,4 +542,4 @@ _multiprocessing_SemLock___exit__(SemLockObject *self, PyObject *const *args, Py
 #ifndef _MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF
     #define _MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF
 #endif /* !defined(_MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF) */
-/*[clinic end generated code: output=dae57a702cc01512 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d57992037e6770b6 input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/multiprocessing.c b/Modules/_multiprocessing/multiprocessing.c
index 8f9daa5c3de0cc..2e6d8eb68c0243 100644
--- a/Modules/_multiprocessing/multiprocessing.c
+++ b/Modules/_multiprocessing/multiprocessing.c
@@ -14,16 +14,17 @@ class HANDLE_converter(CConverter):
     type = "HANDLE"
     format_unit = '"F_HANDLE"'
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
             {paramname} = PyLong_AsVoidPtr({argname});
             if (!{paramname} && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.parser_name)
+            """,
+            argname=argname)
 
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=3e537d244034affb]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=3cf0318efc6a8772]*/
 
 /*[clinic input]
 module _multiprocessing
@@ -266,8 +267,7 @@ multiprocessing_exec(PyObject *module)
     ADD_FLAG(HAVE_BROKEN_SEM_UNLINK);
 #endif
 
-    if (PyModule_AddObject(module, "flags", flags) < 0) {
-        Py_DECREF(flags);
+    if (PyModule_Add(module, "flags", flags) < 0) {
         return -1;
     }
 
diff --git a/Modules/_multiprocessing/multiprocessing.h b/Modules/_multiprocessing/multiprocessing.h
index dfc2a8e0799a60..099004b437828e 100644
--- a/Modules/_multiprocessing/multiprocessing.h
+++ b/Modules/_multiprocessing/multiprocessing.h
@@ -1,11 +1,18 @@
 #ifndef MULTIPROCESSING_H
 #define MULTIPROCESSING_H
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
 
 #include "Python.h"
 #include "structmember.h"
 #include "pythread.h"
+#include "pycore_signal.h"        // _PyOS_IsMainThread()
+
+#ifndef MS_WINDOWS
+#  include <unistd.h>             // sysconf()
+#endif
 
 /*
  * Platform includes and definitions
diff --git a/Modules/_multiprocessing/posixshmem.c b/Modules/_multiprocessing/posixshmem.c
index 88c93fe313785c..425ce10075c156 100644
--- a/Modules/_multiprocessing/posixshmem.c
+++ b/Modules/_multiprocessing/posixshmem.c
@@ -2,15 +2,21 @@
 posixshmem - A Python extension that provides shm_open() and shm_unlink()
 */
 
-#define PY_SSIZE_T_CLEAN
+#include "pyconfig.h"   // Py_GIL_DISABLED
+
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
+#endif
 
 #include <Python.h>
 
-// for shm_open() and shm_unlink()
+#include <errno.h>                // EINTR
 #ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
+#  include <sys/mman.h>           // shm_open(), shm_unlink()
 #endif
 
+
 /*[clinic input]
 module _posixshmem
 [clinic start generated code]*/
@@ -42,7 +48,7 @@ _posixshmem_shm_open_impl(PyObject *module, PyObject *path, int flags,
 {
     int fd;
     int async_err = 0;
-    const char *name = PyUnicode_AsUTF8(path);
+    const char *name = PyUnicode_AsUTF8AndSize(path, NULL);
     if (name == NULL) {
         return -1;
     }
@@ -81,7 +87,7 @@ _posixshmem_shm_unlink_impl(PyObject *module, PyObject *path)
 {
     int rv;
     int async_err = 0;
-    const char *name = PyUnicode_AsUTF8(path);
+    const char *name = PyUnicode_AsUTF8AndSize(path, NULL);
     if (name == NULL) {
         return NULL;
     }
diff --git a/Modules/_multiprocessing/semaphore.c b/Modules/_multiprocessing/semaphore.c
index 897b8db7110a41..f8f2afda28d06d 100644
--- a/Modules/_multiprocessing/semaphore.c
+++ b/Modules/_multiprocessing/semaphore.c
@@ -9,6 +9,10 @@
 
 #include "multiprocessing.h"
 
+#ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>           // gettimeofday()
+#endif
+
 #ifdef HAVE_MP_SEMAPHORE
 
 enum { RECURSIVE_MUTEX, SEMAPHORE };
@@ -516,12 +520,12 @@ _multiprocessing_SemLock_impl(PyTypeObject *type, int kind, int value,
     return result;
 
   failure:
-    if (handle != SEM_FAILED)
-        SEM_CLOSE(handle);
-    PyMem_Free(name_copy);
     if (!PyErr_Occurred()) {
         _PyMp_SetError(NULL, MP_STANDARD_ERROR);
     }
+    if (handle != SEM_FAILED)
+        SEM_CLOSE(handle);
+    PyMem_Free(name_copy);
     return NULL;
 }
 
@@ -556,8 +560,9 @@ _multiprocessing_SemLock__rebuild_impl(PyTypeObject *type, SEM_HANDLE handle,
     if (name != NULL) {
         handle = sem_open(name, 0);
         if (handle == SEM_FAILED) {
+            PyErr_SetFromErrno(PyExc_OSError);
             PyMem_Free(name_copy);
-            return PyErr_SetFromErrno(PyExc_OSError);
+            return NULL;
         }
     }
 #endif
@@ -734,13 +739,13 @@ static PyMethodDef semlock_methods[] = {
  */
 
 static PyMemberDef semlock_members[] = {
-    {"handle", T_SEM_HANDLE, offsetof(SemLockObject, handle), READONLY,
+    {"handle", T_SEM_HANDLE, offsetof(SemLockObject, handle), Py_READONLY,
      ""},
-    {"kind", T_INT, offsetof(SemLockObject, kind), READONLY,
+    {"kind", Py_T_INT, offsetof(SemLockObject, kind), Py_READONLY,
      ""},
-    {"maxvalue", T_INT, offsetof(SemLockObject, maxvalue), READONLY,
+    {"maxvalue", Py_T_INT, offsetof(SemLockObject, maxvalue), Py_READONLY,
      ""},
-    {"name", T_STRING, offsetof(SemLockObject, name), READONLY,
+    {"name", Py_T_STRING, offsetof(SemLockObject, name), Py_READONLY,
      ""},
     {NULL}
 };
diff --git a/Modules/_opcode.c b/Modules/_opcode.c
index b70d426fa29bc0..93c71377f03a76 100644
--- a/Modules/_opcode.c
+++ b/Modules/_opcode.c
@@ -1,6 +1,13 @@
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
+#include "compile.h"
 #include "opcode.h"
 #include "internal/pycore_code.h"
+#include "internal/pycore_compile.h"
+#include "internal/pycore_intrinsics.h"
 
 /*[clinic input]
 module _opcode
@@ -27,25 +34,16 @@ _opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg,
                           PyObject *jump)
 /*[clinic end generated code: output=64a18f2ead954dbb input=461c9d4a44851898]*/
 {
-    int effect;
     int oparg_int = 0;
     int jump_int;
-    if (HAS_ARG(opcode)) {
-        if (oparg == Py_None) {
-            PyErr_SetString(PyExc_ValueError,
-                    "stack_effect: opcode requires oparg but oparg was not specified");
-            return -1;
-        }
+
+    if (oparg != Py_None) {
         oparg_int = (int)PyLong_AsLong(oparg);
         if ((oparg_int == -1) && PyErr_Occurred()) {
             return -1;
         }
     }
-    else if (oparg != Py_None) {
-        PyErr_SetString(PyExc_ValueError,
-                "stack_effect: opcode does not permit oparg but oparg was specified");
-        return -1;
-    }
+
     if (jump == Py_None) {
         jump_int = -1;
     }
@@ -60,17 +58,158 @@ _opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg,
                 "stack_effect: jump must be False, True or None");
         return -1;
     }
-    effect = PyCompile_OpcodeStackEffectWithJump(opcode, oparg_int, jump_int);
+    int effect = PyCompile_OpcodeStackEffectWithJump(opcode, oparg_int, jump_int);
     if (effect == PY_INVALID_STACK_EFFECT) {
-            PyErr_SetString(PyExc_ValueError,
-                    "invalid opcode or oparg");
-            return -1;
+        PyErr_SetString(PyExc_ValueError, "invalid opcode or oparg");
+        return -1;
     }
     return effect;
 }
 
 /*[clinic input]
 
+_opcode.is_valid -> bool
+
+  opcode: int
+
+Return True if opcode is valid, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_is_valid_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=b0d918ea1d073f65 input=fe23e0aa194ddae0]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode);
+}
+
+/*[clinic input]
+
+_opcode.has_arg -> bool
+
+  opcode: int
+
+Return True if the opcode uses its oparg, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_has_arg_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=7a062d3b2dcc0815 input=93d878ba6361db5f]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasArg(opcode);
+}
+
+/*[clinic input]
+
+_opcode.has_const -> bool
+
+  opcode: int
+
+Return True if the opcode accesses a constant, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_has_const_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=c646d5027c634120 input=a6999e4cf13f9410]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasConst(opcode);
+}
+
+/*[clinic input]
+
+_opcode.has_name -> bool
+
+  opcode: int
+
+Return True if the opcode accesses an attribute by name, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_has_name_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=b49a83555c2fa517 input=448aa5e4bcc947ba]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasName(opcode);
+}
+
+/*[clinic input]
+
+_opcode.has_jump -> bool
+
+  opcode: int
+
+Return True if the opcode has a jump target, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_has_jump_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=e9c583c669f1c46a input=35f711274357a0c3]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasJump(opcode);
+
+}
+
+/*[clinic input]
+
+_opcode.has_free -> bool
+
+  opcode: int
+
+Return True if the opcode accesses a free variable, False otherwise.
+
+Note that 'free' in this context refers to names in the current scope
+that are referenced by inner scopes or names in outer scopes that are
+referenced from this scope. It does not include references to global
+or builtin scopes.
+[clinic start generated code]*/
+
+static int
+_opcode_has_free_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=d81ae4d79af0ee26 input=117dcd5c19c1139b]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasFree(opcode);
+
+}
+
+/*[clinic input]
+
+_opcode.has_local -> bool
+
+  opcode: int
+
+Return True if the opcode accesses a local variable, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_has_local_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=da5a8616b7a5097b input=9a798ee24aaef49d]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasLocal(opcode);
+}
+
+/*[clinic input]
+
+_opcode.has_exc -> bool
+
+  opcode: int
+
+Return True if the opcode sets an exception handler, False otherwise.
+[clinic start generated code]*/
+
+static int
+_opcode_has_exc_impl(PyObject *module, int opcode)
+/*[clinic end generated code: output=41b68dff0ec82a52 input=db0e4bdb9bf13fa5]*/
+{
+    return _PyCompile_OpcodeIsValid(opcode) &&
+           _PyCompile_OpcodeHasExc(opcode);
+}
+
+/*[clinic input]
+
 _opcode.get_specialization_stats
 
 Return the specialization stats
@@ -87,14 +226,156 @@ _opcode_get_specialization_stats_impl(PyObject *module)
 #endif
 }
 
+/*[clinic input]
+
+_opcode.get_nb_ops
+
+Return array of symbols of binary ops.
+
+Indexed by the BINARY_OP oparg value.
+[clinic start generated code]*/
+
+static PyObject *
+_opcode_get_nb_ops_impl(PyObject *module)
+/*[clinic end generated code: output=d997d306cc15426f input=9462fc544c823176]*/
+{
+    PyObject *list = PyList_New(NB_OPARG_LAST + 1);
+    if (list == NULL) {
+        return NULL;
+    }
+#define ADD_NB_OP(NUM, STR) \
+    do { \
+        PyObject *pair = Py_BuildValue("ss", #NUM, STR); \
+        if (pair == NULL) { \
+            Py_DECREF(list); \
+            return NULL; \
+        } \
+        PyList_SET_ITEM(list, (NUM), pair); \
+    } while(0);
+
+    ADD_NB_OP(NB_ADD, "+");
+    ADD_NB_OP(NB_AND, "&");
+    ADD_NB_OP(NB_FLOOR_DIVIDE, "//");
+    ADD_NB_OP(NB_LSHIFT, "<<");
+    ADD_NB_OP(NB_MATRIX_MULTIPLY, "@");
+    ADD_NB_OP(NB_MULTIPLY, "*");
+    ADD_NB_OP(NB_REMAINDER, "%");
+    ADD_NB_OP(NB_OR, "|");
+    ADD_NB_OP(NB_POWER, "**");
+    ADD_NB_OP(NB_RSHIFT, ">>");
+    ADD_NB_OP(NB_SUBTRACT, "-");
+    ADD_NB_OP(NB_TRUE_DIVIDE, "/");
+    ADD_NB_OP(NB_XOR, "^");
+    ADD_NB_OP(NB_INPLACE_ADD, "+=");
+    ADD_NB_OP(NB_INPLACE_AND, "&=");
+    ADD_NB_OP(NB_INPLACE_FLOOR_DIVIDE, "//=");
+    ADD_NB_OP(NB_INPLACE_LSHIFT, "<<=");
+    ADD_NB_OP(NB_INPLACE_MATRIX_MULTIPLY, "@=");
+    ADD_NB_OP(NB_INPLACE_MULTIPLY, "*=");
+    ADD_NB_OP(NB_INPLACE_REMAINDER, "%=");
+    ADD_NB_OP(NB_INPLACE_OR, "|=");
+    ADD_NB_OP(NB_INPLACE_POWER, "**=");
+    ADD_NB_OP(NB_INPLACE_RSHIFT, ">>=");
+    ADD_NB_OP(NB_INPLACE_SUBTRACT, "-=");
+    ADD_NB_OP(NB_INPLACE_TRUE_DIVIDE, "/=");
+    ADD_NB_OP(NB_INPLACE_XOR, "^=");
+
+#undef ADD_NB_OP
+
+    for(int i = 0; i <= NB_OPARG_LAST; i++) {
+        if (PyList_GET_ITEM(list, i) == NULL) {
+            Py_DECREF(list);
+            PyErr_Format(PyExc_ValueError,
+                         "Missing initialization for NB_OP %d",
+                         i);
+            return NULL;
+        }
+    }
+    return list;
+}
+
+/*[clinic input]
+
+_opcode.get_intrinsic1_descs
+
+Return a list of names of the unary intrinsics.
+[clinic start generated code]*/
+
+static PyObject *
+_opcode_get_intrinsic1_descs_impl(PyObject *module)
+/*[clinic end generated code: output=bd1ddb6b4447d18b input=13b51c712618459b]*/
+{
+    PyObject *list = PyList_New(MAX_INTRINSIC_1 + 1);
+    if (list == NULL) {
+        return NULL;
+    }
+    for (int i=0; i <= MAX_INTRINSIC_1; i++) {
+        PyObject *name = _PyCompile_GetUnaryIntrinsicName(i);
+        if (name == NULL) {
+            Py_DECREF(list);
+            return NULL;
+        }
+        PyList_SET_ITEM(list, i, name);
+    }
+    return list;
+}
+
+
+/*[clinic input]
+
+_opcode.get_intrinsic2_descs
+
+Return a list of names of the binary intrinsics.
+[clinic start generated code]*/
+
+static PyObject *
+_opcode_get_intrinsic2_descs_impl(PyObject *module)
+/*[clinic end generated code: output=40e62bc27584c8a0 input=e83068f249f5471b]*/
+{
+    PyObject *list = PyList_New(MAX_INTRINSIC_2 + 1);
+    if (list == NULL) {
+        return NULL;
+    }
+    for (int i=0; i <= MAX_INTRINSIC_2; i++) {
+        PyObject *name = _PyCompile_GetBinaryIntrinsicName(i);
+        if (name == NULL) {
+            Py_DECREF(list);
+            return NULL;
+        }
+        PyList_SET_ITEM(list, i, name);
+    }
+    return list;
+}
+
+
 static PyMethodDef
 opcode_functions[] =  {
     _OPCODE_STACK_EFFECT_METHODDEF
+    _OPCODE_IS_VALID_METHODDEF
+    _OPCODE_HAS_ARG_METHODDEF
+    _OPCODE_HAS_CONST_METHODDEF
+    _OPCODE_HAS_NAME_METHODDEF
+    _OPCODE_HAS_JUMP_METHODDEF
+    _OPCODE_HAS_FREE_METHODDEF
+    _OPCODE_HAS_LOCAL_METHODDEF
+    _OPCODE_HAS_EXC_METHODDEF
     _OPCODE_GET_SPECIALIZATION_STATS_METHODDEF
+    _OPCODE_GET_NB_OPS_METHODDEF
+    _OPCODE_GET_INTRINSIC1_DESCS_METHODDEF
+    _OPCODE_GET_INTRINSIC2_DESCS_METHODDEF
     {NULL, NULL, 0, NULL}
 };
 
+int
+_opcode_exec(PyObject *m) {
+    if (PyModule_AddIntMacro(m, ENABLE_SPECIALIZATION) < 0) {
+        return -1;
+    }
+    return 0;
+}
+
 static PyModuleDef_Slot module_slots[] = {
+    {Py_mod_exec, _opcode_exec},
     {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
     {0, NULL}
 };
diff --git a/Modules/_operator.c b/Modules/_operator.c
index 68ccc90562d38d..1f6496d381adac 100644
--- a/Modules/_operator.c
+++ b/Modules/_operator.c
@@ -1,7 +1,9 @@
 #include "Python.h"
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "structmember.h"         // PyMemberDef
 #include "pycore_runtime.h"       // _Py_ID()
+
+
 #include "clinic/_operator.c.h"
 
 typedef struct {
@@ -823,9 +825,6 @@ _operator__compare_digest_impl(PyObject *module, PyObject *a, PyObject *b)
 
     /* ASCII unicode string */
     if(PyUnicode_Check(a) && PyUnicode_Check(b)) {
-        if (PyUnicode_READY(a) == -1 || PyUnicode_READY(b) == -1) {
-            return NULL;
-        }
         if (!PyUnicode_IS_ASCII(a) || !PyUnicode_IS_ASCII(b)) {
             PyErr_SetString(PyExc_TypeError,
                             "comparing strings with non-ASCII characters is "
@@ -1154,7 +1153,7 @@ static PyMethodDef itemgetter_methods[] = {
 };
 
 static PyMemberDef itemgetter_members[] = {
-    {"__vectorcalloffset__", T_PYSSIZET, offsetof(itemgetterobject, vectorcall), READONLY},
+    {"__vectorcalloffset__", Py_T_PYSSIZET, offsetof(itemgetterobject, vectorcall), Py_READONLY},
     {NULL} /* Sentinel */
 };
 
@@ -1234,10 +1233,6 @@ attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
             Py_DECREF(attr);
             return NULL;
         }
-        if (PyUnicode_READY(item)) {
-            Py_DECREF(attr);
-            return NULL;
-        }
         Py_ssize_t item_len = PyUnicode_GET_LENGTH(item);
         int kind = PyUnicode_KIND(item);
         const void *data = PyUnicode_DATA(item);
@@ -1513,7 +1508,7 @@ static PyMethodDef attrgetter_methods[] = {
 };
 
 static PyMemberDef attrgetter_members[] = {
-    {"__vectorcalloffset__", T_PYSSIZET, offsetof(attrgetterobject, vectorcall), READONLY},
+    {"__vectorcalloffset__", Py_T_PYSSIZET, offsetof(attrgetterobject, vectorcall), Py_READONLY},
     {NULL} /* Sentinel*/
 };
 
@@ -1554,10 +1549,77 @@ static PyType_Spec attrgetter_type_spec = {
 typedef struct {
     PyObject_HEAD
     PyObject *name;
-    PyObject *args;
+    PyObject *xargs; // reference to arguments passed in constructor
     PyObject *kwds;
+    PyObject **vectorcall_args;  /* Borrowed references */
+    PyObject *vectorcall_kwnames;
+    vectorcallfunc vectorcall;
 } methodcallerobject;
 
+static int _methodcaller_initialize_vectorcall(methodcallerobject* mc)
+{
+    PyObject* args = mc->xargs;
+    PyObject* kwds = mc->kwds;
+
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    assert(nargs > 0);
+    mc->vectorcall_args = PyMem_Calloc(
+        nargs + (kwds ? PyDict_Size(kwds) : 0),
+        sizeof(PyObject*));
+    if (!mc->vectorcall_args) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    /* The first item of vectorcall_args will be filled with obj later */
+    if (nargs > 1) {
+        memcpy(mc->vectorcall_args, PySequence_Fast_ITEMS(args),
+            nargs * sizeof(PyObject*));
+    }
+    if (kwds) {
+        const Py_ssize_t nkwds = PyDict_Size(kwds);
+
+        mc->vectorcall_kwnames = PyTuple_New(nkwds);
+        if (!mc->vectorcall_kwnames) {
+            return -1;
+        }
+        Py_ssize_t i = 0, ppos = 0;
+        PyObject* key, * value;
+        while (PyDict_Next(kwds, &ppos, &key, &value)) {
+            PyTuple_SET_ITEM(mc->vectorcall_kwnames, i, Py_NewRef(key));
+            mc->vectorcall_args[nargs + i] = value; // borrowed reference
+            ++i;
+        }
+    }
+    else {
+        mc->vectorcall_kwnames = NULL;
+    }
+    return 1;
+}
+
+
+static PyObject *
+methodcaller_vectorcall(
+        methodcallerobject *mc, PyObject *const *args, size_t nargsf, PyObject* kwnames)
+{
+    if (!_PyArg_CheckPositional("methodcaller", PyVectorcall_NARGS(nargsf), 1, 1)
+        || !_PyArg_NoKwnames("methodcaller", kwnames)) {
+        return NULL;
+    }
+    if (mc->vectorcall_args == NULL) {
+        if (_methodcaller_initialize_vectorcall(mc) < 0) {
+            return NULL;
+        }
+    }
+
+    assert(mc->vectorcall_args != 0);
+    mc->vectorcall_args[0] = args[0];
+    return PyObject_VectorcallMethod(
+            mc->name, mc->vectorcall_args,
+            (PyTuple_GET_SIZE(mc->xargs)) | PY_VECTORCALL_ARGUMENTS_OFFSET,
+            mc->vectorcall_kwnames);
+}
+
+
 /* AC 3.5: variable number of arguments, not currently support by AC */
 static PyObject *
 methodcaller_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
@@ -1585,30 +1647,32 @@ methodcaller_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    name = PyTuple_GET_ITEM(args, 0);
     Py_INCREF(name);
     PyUnicode_InternInPlace(&name);
     mc->name = name;
 
+    mc->xargs = Py_XNewRef(args); // allows us to use borrowed references
     mc->kwds = Py_XNewRef(kwds);
+    mc->vectorcall_args = 0;
 
-    mc->args = PyTuple_GetSlice(args, 1, PyTuple_GET_SIZE(args));
-    if (mc->args == NULL) {
-        Py_DECREF(mc);
-        return NULL;
-    }
+
+    mc->vectorcall = (vectorcallfunc)methodcaller_vectorcall;
 
     PyObject_GC_Track(mc);
     return (PyObject *)mc;
 }
 
-static int
+static void
 methodcaller_clear(methodcallerobject *mc)
 {
     Py_CLEAR(mc->name);
-    Py_CLEAR(mc->args);
+    Py_CLEAR(mc->xargs);
     Py_CLEAR(mc->kwds);
-    return 0;
+    if (mc->vectorcall_args != NULL) {
+        PyMem_Free(mc->vectorcall_args);
+        mc->vectorcall_args = 0;
+        Py_CLEAR(mc->vectorcall_kwnames);
+    }
 }
 
 static void
@@ -1616,7 +1680,7 @@ methodcaller_dealloc(methodcallerobject *mc)
 {
     PyTypeObject *tp = Py_TYPE(mc);
     PyObject_GC_UnTrack(mc);
-    (void)methodcaller_clear(mc);
+    methodcaller_clear(mc);
     tp->tp_free(mc);
     Py_DECREF(tp);
 }
@@ -1625,7 +1689,7 @@ static int
 methodcaller_traverse(methodcallerobject *mc, visitproc visit, void *arg)
 {
     Py_VISIT(mc->name);
-    Py_VISIT(mc->args);
+    Py_VISIT(mc->xargs);
     Py_VISIT(mc->kwds);
     Py_VISIT(Py_TYPE(mc));
     return 0;
@@ -1644,7 +1708,16 @@ methodcaller_call(methodcallerobject *mc, PyObject *args, PyObject *kw)
     method = PyObject_GetAttr(obj, mc->name);
     if (method == NULL)
         return NULL;
-    result = PyObject_Call(method, mc->args, mc->kwds);
+
+
+    PyObject *cargs = PyTuple_GetSlice(mc->xargs, 1, PyTuple_GET_SIZE(mc->xargs));
+    if (cargs == NULL) {
+        Py_DECREF(method);
+        return NULL;
+    }
+
+    result = PyObject_Call(method, cargs, mc->kwds);
+    Py_DECREF(cargs);
     Py_DECREF(method);
     return result;
 }
@@ -1662,7 +1735,7 @@ methodcaller_repr(methodcallerobject *mc)
     }
 
     numkwdargs = mc->kwds != NULL ? PyDict_GET_SIZE(mc->kwds) : 0;
-    numposargs = PyTuple_GET_SIZE(mc->args);
+    numposargs = PyTuple_GET_SIZE(mc->xargs) - 1;
     numtotalargs = numposargs + numkwdargs;
 
     if (numtotalargs == 0) {
@@ -1678,7 +1751,7 @@ methodcaller_repr(methodcallerobject *mc)
     }
 
     for (i = 0; i < numposargs; ++i) {
-        PyObject *onerepr = PyObject_Repr(PyTuple_GET_ITEM(mc->args, i));
+        PyObject *onerepr = PyObject_Repr(PyTuple_GET_ITEM(mc->xargs, i+1));
         if (onerepr == NULL)
             goto done;
         PyTuple_SET_ITEM(argreprs, i, onerepr);
@@ -1728,17 +1801,16 @@ methodcaller_repr(methodcallerobject *mc)
 static PyObject *
 methodcaller_reduce(methodcallerobject *mc, PyObject *Py_UNUSED(ignored))
 {
-    PyObject *newargs;
     if (!mc->kwds || PyDict_GET_SIZE(mc->kwds) == 0) {
         Py_ssize_t i;
-        Py_ssize_t callargcount = PyTuple_GET_SIZE(mc->args);
-        newargs = PyTuple_New(1 + callargcount);
+        Py_ssize_t newarg_size = PyTuple_GET_SIZE(mc->xargs);
+        PyObject *newargs = PyTuple_New(newarg_size);
         if (newargs == NULL)
             return NULL;
         PyTuple_SET_ITEM(newargs, 0, Py_NewRef(mc->name));
-        for (i = 0; i < callargcount; ++i) {
-            PyObject *arg = PyTuple_GET_ITEM(mc->args, i);
-            PyTuple_SET_ITEM(newargs, i + 1, Py_NewRef(arg));
+        for (i = 1; i < newarg_size; ++i) {
+            PyObject *arg = PyTuple_GET_ITEM(mc->xargs, i);
+            PyTuple_SET_ITEM(newargs, i, Py_NewRef(arg));
         }
         return Py_BuildValue("ON", Py_TYPE(mc), newargs);
     }
@@ -1756,7 +1828,12 @@ methodcaller_reduce(methodcallerobject *mc, PyObject *Py_UNUSED(ignored))
         constructor = PyObject_VectorcallDict(partial, newargs, 2, mc->kwds);
 
         Py_DECREF(partial);
-        return Py_BuildValue("NO", constructor, mc->args);
+        PyObject *args = PyTuple_GetSlice(mc->xargs, 1, PyTuple_GET_SIZE(mc->xargs));
+        if (!args) {
+            Py_DECREF(constructor);
+            return NULL;
+        }
+        return Py_BuildValue("NO", constructor, args);
     }
 }
 
@@ -1765,6 +1842,12 @@ static PyMethodDef methodcaller_methods[] = {
      reduce_doc},
     {NULL}
 };
+
+static PyMemberDef methodcaller_members[] = {
+    {"__vectorcalloffset__", Py_T_PYSSIZET, offsetof(methodcallerobject, vectorcall), Py_READONLY},
+    {NULL}
+};
+
 PyDoc_STRVAR(methodcaller_doc,
 "methodcaller(name, /, *args, **kwargs)\n--\n\n\
 Return a callable object that calls the given method on its operand.\n\
@@ -1779,6 +1862,7 @@ static PyType_Slot methodcaller_type_slots[] = {
     {Py_tp_traverse, methodcaller_traverse},
     {Py_tp_clear, methodcaller_clear},
     {Py_tp_methods, methodcaller_methods},
+    {Py_tp_members, methodcaller_members},
     {Py_tp_new, methodcaller_new},
     {Py_tp_getattro, PyObject_GenericGetAttr},
     {Py_tp_repr, methodcaller_repr},
@@ -1790,7 +1874,7 @@ static PyType_Spec methodcaller_type_spec = {
     .basicsize = sizeof(methodcallerobject),
     .itemsize = 0,
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-              Py_TPFLAGS_IMMUTABLETYPE),
+              Py_TPFLAGS_HAVE_VECTORCALL | Py_TPFLAGS_IMMUTABLETYPE),
     .slots = methodcaller_type_slots,
 };
 
diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index bf7ecae0cc0e50..227e5378e42285 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -9,14 +9,19 @@
 #endif
 
 #include "Python.h"
+#include "pycore_bytesobject.h"   // _PyBytesWriter
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCall()
+#include "pycore_long.h"          // _PyLong_AsByteArray()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "pycore_runtime.h"       // _Py_ID()
+#include "pycore_object.h"        // _PyNone_Type
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_runtime.h"       // _Py_ID()
+#include "pycore_setobject.h"     // _PySet_NextEntry()
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
 
 #include <stdlib.h>               // strtol()
 
+
 PyDoc_STRVAR(pickle_module_doc,
 "Optimized C implementation for the Python pickle module.");
 
@@ -405,7 +410,7 @@ init_method_ref(PyObject *self, PyObject *name,
 
     /* *method_func and *method_self should be consistent.  All refcount decrements
        should be occurred after setting *method_self and *method_func. */
-    ret = _PyObject_LookupAttr(self, name, &func);
+    ret = PyObject_GetOptionalAttr(self, name, &func);
     if (func == NULL) {
         *method_self = NULL;
         Py_CLEAR(*method_func);
@@ -1145,39 +1150,49 @@ _Pickler_Write(PicklerObject *self, const char *s, Py_ssize_t data_len)
 static PicklerObject *
 _Pickler_New(PickleState *st)
 {
-    PicklerObject *self;
-
-    self = PyObject_GC_New(PicklerObject, st->Pickler_Type);
-    if (self == NULL)
+    PyMemoTable *memo = PyMemoTable_New();
+    if (memo == NULL) {
         return NULL;
+    }
+
+    const Py_ssize_t max_output_len = WRITE_BUF_SIZE;
+    PyObject *output_buffer = PyBytes_FromStringAndSize(NULL, max_output_len);
+    if (output_buffer == NULL) {
+        goto error;
+    }
+
+    PicklerObject *self = PyObject_GC_New(PicklerObject, st->Pickler_Type);
+    if (self == NULL) {
+        goto error;
+    }
 
+    self->memo = memo;
     self->pers_func = NULL;
+    self->pers_func_self = NULL;
     self->dispatch_table = NULL;
-    self->buffer_callback = NULL;
+    self->reducer_override = NULL;
     self->write = NULL;
+    self->output_buffer = output_buffer;
+    self->output_len = 0;
+    self->max_output_len = max_output_len;
     self->proto = 0;
     self->bin = 0;
     self->framing = 0;
     self->frame_start = -1;
+    self->buf_size = 0;
     self->fast = 0;
     self->fast_nesting = 0;
     self->fix_imports = 0;
     self->fast_memo = NULL;
-    self->max_output_len = WRITE_BUF_SIZE;
-    self->output_len = 0;
-    self->reducer_override = NULL;
-
-    self->memo = PyMemoTable_New();
-    self->output_buffer = PyBytes_FromStringAndSize(NULL,
-                                                    self->max_output_len);
-
-    if (self->memo == NULL || self->output_buffer == NULL) {
-        Py_DECREF(self);
-        return NULL;
-    }
+    self->buffer_callback = NULL;
 
     PyObject_GC_Track(self);
     return self;
+
+error:
+    PyMem_Free(memo);
+    Py_XDECREF(output_buffer);
+    return NULL;
 }
 
 static int
@@ -1213,7 +1228,7 @@ static int
 _Pickler_SetOutputStream(PicklerObject *self, PyObject *file)
 {
     assert(file != NULL);
-    if (_PyObject_LookupAttr(file, &_Py_ID(write), &self->write) < 0) {
+    if (PyObject_GetOptionalAttr(file, &_Py_ID(write), &self->write) < 0) {
         return -1;
     }
     if (self->write == NULL) {
@@ -1625,14 +1640,31 @@ _Unpickler_MemoCleanup(UnpicklerObject *self)
 static UnpicklerObject *
 _Unpickler_New(PyObject *module)
 {
-    UnpicklerObject *self;
+    const int MEMO_SIZE = 32;
+    PyObject **memo = _Unpickler_NewMemo(MEMO_SIZE);
+    if (memo == NULL) {
+        return NULL;
+    }
+
     PickleState *st = _Pickle_GetState(module);
+    PyObject *stack = Pdata_New(st);
+    if (stack == NULL) {
+        goto error;
+    }
 
-    self = PyObject_GC_New(UnpicklerObject, st->Unpickler_Type);
-    if (self == NULL)
-        return NULL;
+    UnpicklerObject *self = PyObject_GC_New(UnpicklerObject,
+                                            st->Unpickler_Type);
+    if (self == NULL) {
+        goto error;
+    }
 
+    self->stack = (Pdata *)stack;
+    self->memo = memo;
+    self->memo_size = MEMO_SIZE;
+    self->memo_len = 0;
     self->pers_func = NULL;
+    self->pers_func_self = NULL;
+    memset(&self->buffer, 0, sizeof(Py_buffer));
     self->input_buffer = NULL;
     self->input_line = NULL;
     self->input_len = 0;
@@ -1650,19 +1682,14 @@ _Unpickler_New(PyObject *module)
     self->marks_size = 0;
     self->proto = 0;
     self->fix_imports = 0;
-    memset(&self->buffer, 0, sizeof(Py_buffer));
-    self->memo_size = 32;
-    self->memo_len = 0;
-    self->memo = _Unpickler_NewMemo(self->memo_size);
-    self->stack = (Pdata *)Pdata_New(st);
-
-    if (self->memo == NULL || self->stack == NULL) {
-        Py_DECREF(self);
-        return NULL;
-    }
 
     PyObject_GC_Track(self);
     return self;
+
+error:
+    PyMem_Free(memo);
+    Py_XDECREF(stack);
+    return NULL;
 }
 
 /* Returns -1 (with an exception set) on failure, 0 on success. This may
@@ -1671,26 +1698,31 @@ static int
 _Unpickler_SetInputStream(UnpicklerObject *self, PyObject *file)
 {
     /* Optional file methods */
-    if (_PyObject_LookupAttr(file, &_Py_ID(peek), &self->peek) < 0) {
-        return -1;
+    if (PyObject_GetOptionalAttr(file, &_Py_ID(peek), &self->peek) < 0) {
+        goto error;
     }
-    if (_PyObject_LookupAttr(file, &_Py_ID(readinto), &self->readinto) < 0) {
-        return -1;
+    if (PyObject_GetOptionalAttr(file, &_Py_ID(readinto), &self->readinto) < 0) {
+        goto error;
+    }
+    if (PyObject_GetOptionalAttr(file, &_Py_ID(read), &self->read) < 0) {
+        goto error;
+    }
+    if (PyObject_GetOptionalAttr(file, &_Py_ID(readline), &self->readline) < 0) {
+        goto error;
     }
-    (void)_PyObject_LookupAttr(file, &_Py_ID(read), &self->read);
-    (void)_PyObject_LookupAttr(file, &_Py_ID(readline), &self->readline);
     if (!self->readline || !self->read) {
-        if (!PyErr_Occurred()) {
-            PyErr_SetString(PyExc_TypeError,
-                            "file must have 'read' and 'readline' attributes");
-        }
-        Py_CLEAR(self->read);
-        Py_CLEAR(self->readinto);
-        Py_CLEAR(self->readline);
-        Py_CLEAR(self->peek);
-        return -1;
+        PyErr_SetString(PyExc_TypeError,
+                        "file must have 'read' and 'readline' attributes");
+        goto error;
     }
     return 0;
+
+error:
+    Py_CLEAR(self->read);
+    Py_CLEAR(self->readinto);
+    Py_CLEAR(self->readline);
+    Py_CLEAR(self->peek);
+    return -1;
 }
 
 /* Returns -1 (with an exception set) on failure, 0 on success. This may
@@ -1872,7 +1904,7 @@ get_deep_attribute(PyObject *obj, PyObject *names, PyObject **pparent)
     for (i = 0; i < n; i++) {
         PyObject *name = PyList_GET_ITEM(names, i);
         Py_XSETREF(parent, obj);
-        (void)_PyObject_LookupAttr(parent, name, &obj);
+        (void)PyObject_GetOptionalAttr(parent, name, &obj);
         if (obj == NULL) {
             Py_DECREF(parent);
             return NULL;
@@ -1899,7 +1931,7 @@ getattribute(PyObject *obj, PyObject *name, int allow_qualname)
         Py_DECREF(dotted_path);
     }
     else {
-        (void)_PyObject_LookupAttr(obj, name, &attr);
+        (void)PyObject_GetOptionalAttr(obj, name, &attr);
     }
     if (attr == NULL && !PyErr_Occurred()) {
         PyErr_Format(PyExc_AttributeError,
@@ -1940,7 +1972,7 @@ whichmodule(PyObject *global, PyObject *dotted_path)
     Py_ssize_t i;
     PyObject *modules;
 
-    if (_PyObject_LookupAttr(global, &_Py_ID(__module__), &module_name) < 0) {
+    if (PyObject_GetOptionalAttr(global, &_Py_ID(__module__), &module_name) < 0) {
         return NULL;
     }
     if (module_name) {
@@ -1999,8 +2031,7 @@ whichmodule(PyObject *global, PyObject *dotted_path)
     }
 
     /* If no module is found, use __main__. */
-    module_name = &_Py_ID(__main__);
-    return Py_NewRef(module_name);
+    return &_Py_ID(__main__);
 }
 
 /* fast_save_enter() and fast_save_leave() are guards against recursive
@@ -2602,9 +2633,6 @@ raw_unicode_escape(PyObject *obj)
     int kind;
     _PyBytesWriter writer;
 
-    if (PyUnicode_READY(obj))
-        return NULL;
-
     _PyBytesWriter_Init(&writer);
 
     size = PyUnicode_GET_LENGTH(obj);
@@ -2674,9 +2702,6 @@ write_unicode_binary(PicklerObject *self, PyObject *obj)
     Py_ssize_t size;
     const char *data;
 
-    if (PyUnicode_READY(obj))
-        return -1;
-
     data = PyUnicode_AsUTF8AndSize(obj, &size);
     if (data == NULL) {
         /* Issue #8383: for strings with lone surrogates, fallback on the
@@ -3634,7 +3659,7 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
         global_name = Py_NewRef(name);
     }
     else {
-        if (_PyObject_LookupAttr(obj, &_Py_ID(__qualname__), &global_name) < 0)
+        if (PyObject_GetOptionalAttr(obj, &_Py_ID(__qualname__), &global_name) < 0)
             goto error;
         if (global_name == NULL) {
             global_name = PyObject_GetAttr(obj, &_Py_ID(__name__));
@@ -3957,7 +3982,7 @@ get_class(PyObject *obj)
 {
     PyObject *cls;
 
-    if (_PyObject_LookupAttr(obj, &_Py_ID(__class__), &cls) == 0) {
+    if (PyObject_GetOptionalAttr(obj, &_Py_ID(__class__), &cls) == 0) {
         cls = Py_NewRef(Py_TYPE(obj));
     }
     return cls;
@@ -4040,7 +4065,7 @@ save_reduce(PickleState *st, PicklerObject *self, PyObject *args,
     if (self->proto >= 2) {
         PyObject *name;
 
-        if (_PyObject_LookupAttr(callable, &_Py_ID(__name__), &name) < 0) {
+        if (PyObject_GetOptionalAttr(callable, &_Py_ID(__name__), &name) < 0) {
             return -1;
         }
         if (name != NULL && PyUnicode_Check(name)) {
@@ -4416,16 +4441,13 @@ save(PickleState *st, PicklerObject *self, PyObject *obj, int pers_save)
                PyObject_GetItem and _PyObject_GetAttrId used below. */
             Py_INCREF(reduce_func);
         }
-    } else {
-        reduce_func = PyObject_GetItem(self->dispatch_table,
-                                       (PyObject *)type);
-        if (reduce_func == NULL) {
-            if (PyErr_ExceptionMatches(PyExc_KeyError))
-                PyErr_Clear();
-            else
-                goto error;
-        }
     }
+    else if (PyMapping_GetOptionalItem(self->dispatch_table, (PyObject *)type,
+                                       &reduce_func) < 0)
+    {
+        goto error;
+    }
+
     if (reduce_func != NULL) {
         reduce_value = _Pickle_FastCall(reduce_func, Py_NewRef(obj));
     }
@@ -4443,7 +4465,7 @@ save(PickleState *st, PicklerObject *self, PyObject *obj, int pers_save)
            don't actually have to check for a __reduce__ method. */
 
         /* Check for a __reduce_ex__ method. */
-        if (_PyObject_LookupAttr(obj, &_Py_ID(__reduce_ex__), &reduce_func) < 0) {
+        if (PyObject_GetOptionalAttr(obj, &_Py_ID(__reduce_ex__), &reduce_func) < 0) {
             goto error;
         }
         if (reduce_func != NULL) {
@@ -4455,7 +4477,7 @@ save(PickleState *st, PicklerObject *self, PyObject *obj, int pers_save)
         }
         else {
             /* Check for a __reduce__ method. */
-            if (_PyObject_LookupAttr(obj, &_Py_ID(__reduce__), &reduce_func) < 0) {
+            if (PyObject_GetOptionalAttr(obj, &_Py_ID(__reduce__), &reduce_func) < 0) {
                 goto error;
             }
             if (reduce_func != NULL) {
@@ -4507,7 +4529,7 @@ dump(PickleState *state, PicklerObject *self, PyObject *obj)
     int status = -1;
     PyObject *tmp;
 
-    if (_PyObject_LookupAttr((PyObject *)self, &_Py_ID(reducer_override),
+    if (PyObject_GetOptionalAttr((PyObject *)self, &_Py_ID(reducer_override),
                              &tmp) < 0) {
       goto error;
     }
@@ -4685,6 +4707,14 @@ Pickler_traverse(PicklerObject *self, visitproc visit, void *arg)
     Py_VISIT(self->fast_memo);
     Py_VISIT(self->reducer_override);
     Py_VISIT(self->buffer_callback);
+    PyMemoTable *memo = self->memo;
+    if (memo && memo->mt_table) {
+        Py_ssize_t i = memo->mt_allocated;
+        while (--i >= 0) {
+            Py_VISIT(memo->mt_table[i].me_key);
+        }
+    }
+
     return 0;
 }
 
@@ -4777,7 +4807,7 @@ _pickle_Pickler___init___impl(PicklerObject *self, PyObject *file,
     if (self->dispatch_table != NULL) {
         return 0;
     }
-    if (_PyObject_LookupAttr((PyObject *)self, &_Py_ID(dispatch_table),
+    if (PyObject_GetOptionalAttr((PyObject *)self, &_Py_ID(dispatch_table),
                              &self->dispatch_table) < 0) {
         return -1;
     }
@@ -4834,11 +4864,12 @@ _pickle_PicklerMemoProxy_copy_impl(PicklerMemoProxyObject *self)
             PyObject *key, *value;
 
             key = PyLong_FromVoidPtr(entry.me_key);
+            if (key == NULL) {
+                goto error;
+            }
             value = Py_BuildValue("nO", entry.me_value, entry.me_key);
-
-            if (key == NULL || value == NULL) {
-                Py_XDECREF(key);
-                Py_XDECREF(value);
+            if (value == NULL) {
+                Py_DECREF(key);
                 goto error;
             }
             status = PyDict_SetItem(new_memo, key, value);
@@ -5052,9 +5083,9 @@ Pickler_set_persid(PicklerObject *self, PyObject *value, void *Py_UNUSED(ignored
 }
 
 static PyMemberDef Pickler_members[] = {
-    {"bin", T_INT, offsetof(PicklerObject, bin)},
-    {"fast", T_INT, offsetof(PicklerObject, fast)},
-    {"dispatch_table", T_OBJECT_EX, offsetof(PicklerObject, dispatch_table)},
+    {"bin", Py_T_INT, offsetof(PicklerObject, bin)},
+    {"fast", Py_T_INT, offsetof(PicklerObject, fast)},
+    {"dispatch_table", Py_T_OBJECT_EX, offsetof(PicklerObject, dispatch_table)},
     {NULL}
 };
 
@@ -5776,14 +5807,13 @@ instantiate(PyObject *cls, PyObject *args)
        into a newly created tuple. */
     assert(PyTuple_Check(args));
     if (!PyTuple_GET_SIZE(args) && PyType_Check(cls)) {
-        PyObject *func;
-        if (_PyObject_LookupAttr(cls, &_Py_ID(__getinitargs__), &func) < 0) {
+        int rc = PyObject_HasAttrWithError(cls, &_Py_ID(__getinitargs__));
+        if (rc < 0) {
             return NULL;
         }
-        if (func == NULL) {
+        if (!rc) {
             return PyObject_CallMethodOneArg(cls, &_Py_ID(__new__), cls);
         }
-        Py_DECREF(func);
     }
     return PyObject_CallObject(cls, args);
 }
@@ -5994,12 +6024,20 @@ load_stack_global(PickleState *st, UnpicklerObject *self)
     PyObject *global_name;
 
     PDATA_POP(st, self->stack, global_name);
+    if (global_name == NULL) {
+        return -1;
+    }
     PDATA_POP(st, self->stack, module_name);
-    if (module_name == NULL || !PyUnicode_CheckExact(module_name) ||
-        global_name == NULL || !PyUnicode_CheckExact(global_name)) {
+    if (module_name == NULL) {
+        Py_DECREF(global_name);
+        return -1;
+    }
+    if (!PyUnicode_CheckExact(module_name) ||
+        !PyUnicode_CheckExact(global_name))
+    {
         PyErr_SetString(st->UnpicklingError, "STACK_GLOBAL requires str");
-        Py_XDECREF(global_name);
-        Py_XDECREF(module_name);
+        Py_DECREF(global_name);
+        Py_DECREF(module_name);
         return -1;
     }
     global = find_class(self, module_name, global_name);
@@ -6423,7 +6461,7 @@ do_append(PickleState *state, UnpicklerObject *self, Py_ssize_t x)
     else {
         PyObject *extend_func;
 
-        if (_PyObject_LookupAttr(list, &_Py_ID(extend), &extend_func) < 0) {
+        if (PyObject_GetOptionalAttr(list, &_Py_ID(extend), &extend_func) < 0) {
             return -1;
         }
         if (extend_func != NULL) {
@@ -6609,7 +6647,7 @@ load_build(PickleState *st, UnpicklerObject *self)
 
     inst = self->stack->data[Py_SIZE(self->stack) - 1];
 
-    if (_PyObject_LookupAttr(inst, &_Py_ID(__setstate__), &setstate) < 0) {
+    if (PyObject_GetOptionalAttr(inst, &_Py_ID(__setstate__), &setstate) < 0) {
         Py_DECREF(state);
         return -1;
     }
@@ -7145,6 +7183,13 @@ Unpickler_traverse(UnpicklerObject *self, visitproc visit, void *arg)
     Py_VISIT(self->stack);
     Py_VISIT(self->pers_func);
     Py_VISIT(self->buffers);
+    PyObject **memo = self->memo;
+    if (memo) {
+        Py_ssize_t i = self->memo_size;
+        while (--i >= 0) {
+            Py_VISIT(memo[i]);
+        }
+    }
     return 0;
 }
 
diff --git a/Modules/_posixsubprocess.c b/Modules/_posixsubprocess.c
index 2bf83db0e228fb..d0dd8f064e0395 100644
--- a/Modules/_posixsubprocess.c
+++ b/Modules/_posixsubprocess.c
@@ -5,29 +5,31 @@
 
 #include "Python.h"
 #include "pycore_fileutils.h"
+#include "pycore_pystate.h"
+#include "pycore_signal.h"        // _Py_RestoreSignals()
 #if defined(HAVE_PIPE2) && !defined(_GNU_SOURCE)
-# define _GNU_SOURCE
+#  define _GNU_SOURCE
 #endif
-#include <unistd.h>
-#include <fcntl.h>
+#include <unistd.h>               // close()
+#include <fcntl.h>                // fcntl()
 #ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
+#  include <sys/types.h>
 #endif
 #if defined(HAVE_SYS_STAT_H)
-#include <sys/stat.h>
+#  include <sys/stat.h>           // stat()
 #endif
 #ifdef HAVE_SYS_SYSCALL_H
-#include <sys/syscall.h>
+#  include <sys/syscall.h>
 #endif
 #if defined(HAVE_SYS_RESOURCE_H)
-#include <sys/resource.h>
+#  include <sys/resource.h>
 #endif
 #ifdef HAVE_DIRENT_H
-#include <dirent.h>
+#  include <dirent.h>             // opendir()
+#endif
+#if defined(HAVE_SETGROUPS)
+#  include <grp.h>                // setgroups()
 #endif
-#ifdef HAVE_GRP_H
-#include <grp.h>
-#endif /* HAVE_GRP_H */
 
 #include "posixmodule.h"
 
@@ -85,15 +87,16 @@ class pid_t_converter(CConverter):
     type = 'pid_t'
     format_unit = '" _Py_PARSE_PID "'
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
             {paramname} = PyLong_AsPid({argname});
             if ({paramname} == -1 && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.parser_name)
+            """,
+            argname=argname)
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=5af1c116d56cbb5a]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=c94349aa1aad151d]*/
 
 #include "clinic/_posixsubprocess.c.h"
 
@@ -160,16 +163,17 @@ _sanity_check_python_fd_sequence(PyObject *fd_sequence)
 
 /* Is fd found in the sorted Python Sequence? */
 static int
-_is_fd_in_sorted_fd_sequence(int fd, PyObject *fd_sequence)
+_is_fd_in_sorted_fd_sequence(int fd, int *fd_sequence,
+                             Py_ssize_t fd_sequence_len)
 {
     /* Binary search. */
     Py_ssize_t search_min = 0;
-    Py_ssize_t search_max = PyTuple_GET_SIZE(fd_sequence) - 1;
+    Py_ssize_t search_max = fd_sequence_len - 1;
     if (search_max < 0)
         return 0;
     do {
         long middle = (search_min + search_max) / 2;
-        long middle_fd = PyLong_AsLong(PyTuple_GET_ITEM(fd_sequence, middle));
+        long middle_fd = fd_sequence[middle];
         if (fd == middle_fd)
             return 1;
         if (fd > middle_fd)
@@ -180,8 +184,100 @@ _is_fd_in_sorted_fd_sequence(int fd, PyObject *fd_sequence)
     return 0;
 }
 
+
+// Forward declaration
+static void _Py_FreeCharPArray(char *const array[]);
+
+/*
+ * Flatten a sequence of bytes() objects into a C array of
+ * NULL terminated string pointers with a NULL char* terminating the array.
+ * (ie: an argv or env list)
+ *
+ * Memory allocated for the returned list is allocated using PyMem_Malloc()
+ * and MUST be freed by _Py_FreeCharPArray().
+ */
+static char *const *
+_PySequence_BytesToCharpArray(PyObject* self)
+{
+    char **array;
+    Py_ssize_t i, argc;
+    PyObject *item = NULL;
+    Py_ssize_t size;
+
+    argc = PySequence_Size(self);
+    if (argc == -1)
+        return NULL;
+
+    assert(argc >= 0);
+
+    if ((size_t)argc > (PY_SSIZE_T_MAX-sizeof(char *)) / sizeof(char *)) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+
+    array = PyMem_Malloc((argc + 1) * sizeof(char *));
+    if (array == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    for (i = 0; i < argc; ++i) {
+        char *data;
+        item = PySequence_GetItem(self, i);
+        if (item == NULL) {
+            /* NULL terminate before freeing. */
+            array[i] = NULL;
+            goto fail;
+        }
+        /* check for embedded null bytes */
+        if (PyBytes_AsStringAndSize(item, &data, NULL) < 0) {
+            /* NULL terminate before freeing. */
+            array[i] = NULL;
+            goto fail;
+        }
+        size = PyBytes_GET_SIZE(item) + 1;
+        array[i] = PyMem_Malloc(size);
+        if (!array[i]) {
+            PyErr_NoMemory();
+            goto fail;
+        }
+        memcpy(array[i], data, size);
+        Py_DECREF(item);
+    }
+    array[argc] = NULL;
+
+    return array;
+
+fail:
+    Py_XDECREF(item);
+    _Py_FreeCharPArray(array);
+    return NULL;
+}
+
+
+/* Free's a NULL terminated char** array of C strings. */
+static void
+_Py_FreeCharPArray(char *const array[])
+{
+    Py_ssize_t i;
+    for (i = 0; array[i] != NULL; ++i) {
+        PyMem_Free(array[i]);
+    }
+    PyMem_Free((void*)array);
+}
+
+
+/*
+ * Do all the Python C API calls in the parent process to turn the pass_fds
+ * "py_fds_to_keep" tuple into a C array.  The caller owns allocation and
+ * freeing of the array.
+ *
+ * On error an unknown number of array elements may have been filled in.
+ * A Python exception has been set when an error is returned.
+ *
+ * Returns: -1 on error, 0 on success.
+ */
 static int
-make_inheritable(PyObject *py_fds_to_keep, int errpipe_write)
+convert_fds_to_keep_to_c(PyObject *py_fds_to_keep, int *c_fds_to_keep)
 {
     Py_ssize_t i, len;
 
@@ -189,15 +285,37 @@ make_inheritable(PyObject *py_fds_to_keep, int errpipe_write)
     for (i = 0; i < len; ++i) {
         PyObject* fdobj = PyTuple_GET_ITEM(py_fds_to_keep, i);
         long fd = PyLong_AsLong(fdobj);
-        assert(!PyErr_Occurred());
-        assert(0 <= fd && fd <= INT_MAX);
+        if (fd == -1 && PyErr_Occurred()) {
+            return -1;
+        }
+        if (fd < 0 || fd > INT_MAX) {
+            PyErr_SetString(PyExc_ValueError,
+                            "fd out of range in fds_to_keep.");
+            return -1;
+        }
+        c_fds_to_keep[i] = (int)fd;
+    }
+    return 0;
+}
+
+
+/* This function must be async-signal-safe as it is called from child_exec()
+ * after fork() or vfork().
+ */
+static int
+make_inheritable(int *c_fds_to_keep, Py_ssize_t len, int errpipe_write)
+{
+    Py_ssize_t i;
+
+    for (i = 0; i < len; ++i) {
+        int fd = c_fds_to_keep[i];
         if (fd == errpipe_write) {
-            /* errpipe_write is part of py_fds_to_keep. It must be closed at
+            /* errpipe_write is part of fds_to_keep. It must be closed at
                exec(), but kept open in the child process until exec() is
                called. */
             continue;
         }
-        if (_Py_set_inheritable_async_safe((int)fd, 1, NULL) < 0)
+        if (_Py_set_inheritable_async_safe(fd, 1, NULL) < 0)
             return -1;
     }
     return 0;
@@ -233,7 +351,7 @@ safe_get_max_fd(void)
 
 
 /* Close all file descriptors in the given range except for those in
- * py_fds_to_keep by invoking closer on each subrange.
+ * fds_to_keep by invoking closer on each subrange.
  *
  * If end_fd == -1, it's guessed via safe_get_max_fd(), but it isn't
  * possible to know for sure what the max fd to go up to is for
@@ -243,19 +361,18 @@ safe_get_max_fd(void)
 static int
 _close_range_except(int start_fd,
                     int end_fd,
-                    PyObject *py_fds_to_keep,
+                    int *fds_to_keep,
+                    Py_ssize_t fds_to_keep_len,
                     int (*closer)(int, int))
 {
     if (end_fd == -1) {
         end_fd = Py_MIN(safe_get_max_fd(), INT_MAX);
     }
-    Py_ssize_t num_fds_to_keep = PyTuple_GET_SIZE(py_fds_to_keep);
     Py_ssize_t keep_seq_idx;
-    /* As py_fds_to_keep is sorted we can loop through the list closing
+    /* As fds_to_keep is sorted we can loop through the list closing
      * fds in between any in the keep list falling within our range. */
-    for (keep_seq_idx = 0; keep_seq_idx < num_fds_to_keep; ++keep_seq_idx) {
-        PyObject* py_keep_fd = PyTuple_GET_ITEM(py_fds_to_keep, keep_seq_idx);
-        int keep_fd = PyLong_AsLong(py_keep_fd);
+    for (keep_seq_idx = 0; keep_seq_idx < fds_to_keep_len; ++keep_seq_idx) {
+        int keep_fd = fds_to_keep[keep_seq_idx];
         if (keep_fd < start_fd)
             continue;
         if (closer(start_fd, keep_fd - 1) != 0)
@@ -295,7 +412,7 @@ _brute_force_closer(int first, int last)
 }
 
 /* Close all open file descriptors in the range from start_fd and higher
- * Do not close any in the sorted py_fds_to_keep list.
+ * Do not close any in the sorted fds_to_keep list.
  *
  * This version is async signal safe as it does not make any unsafe C library
  * calls, malloc calls or handle any locks.  It is _unfortunate_ to be forced
@@ -310,14 +427,16 @@ _brute_force_closer(int first, int last)
  * it with some cpp #define magic to work on other OSes as well if you want.
  */
 static void
-_close_open_fds_safe(int start_fd, PyObject* py_fds_to_keep)
+_close_open_fds_safe(int start_fd, int *fds_to_keep, Py_ssize_t fds_to_keep_len)
 {
     int fd_dir_fd;
 
     fd_dir_fd = _Py_open_noraise(FD_DIR, O_RDONLY);
     if (fd_dir_fd == -1) {
         /* No way to get a list of open fds. */
-        _close_range_except(start_fd, -1, py_fds_to_keep, _brute_force_closer);
+        _close_range_except(start_fd, -1,
+                            fds_to_keep, fds_to_keep_len,
+                            _brute_force_closer);
         return;
     } else {
         char buffer[sizeof(struct linux_dirent64)];
@@ -336,7 +455,8 @@ _close_open_fds_safe(int start_fd, PyObject* py_fds_to_keep)
                 if ((fd = _pos_int_from_ascii(entry->d_name)) < 0)
                     continue;  /* Not a number. */
                 if (fd != fd_dir_fd && fd >= start_fd &&
-                    !_is_fd_in_sorted_fd_sequence(fd, py_fds_to_keep)) {
+                    !_is_fd_in_sorted_fd_sequence(fd, fds_to_keep,
+                                                  fds_to_keep_len)) {
                     close(fd);
                 }
             }
@@ -357,7 +477,7 @@ _unsafe_closer(int first, int last)
 }
 
 /* Close all open file descriptors from start_fd and higher.
- * Do not close any in the sorted py_fds_to_keep tuple.
+ * Do not close any in the sorted fds_to_keep tuple.
  *
  * This function violates the strict use of async signal safe functions. :(
  * It calls opendir(), readdir() and closedir().  Of these, the one most
@@ -370,11 +490,13 @@ _unsafe_closer(int first, int last)
  *   http://womble.decadent.org.uk/readdir_r-advisory.html
  */
 static void
-_close_open_fds_maybe_unsafe(int start_fd, PyObject* py_fds_to_keep)
+_close_open_fds_maybe_unsafe(int start_fd, int *fds_to_keep,
+                             Py_ssize_t fds_to_keep_len)
 {
     DIR *proc_fd_dir;
 #ifndef HAVE_DIRFD
-    while (_is_fd_in_sorted_fd_sequence(start_fd, py_fds_to_keep)) {
+    while (_is_fd_in_sorted_fd_sequence(start_fd, fds_to_keep,
+                                        fds_to_keep_len)) {
         ++start_fd;
     }
     /* Close our lowest fd before we call opendir so that it is likely to
@@ -393,7 +515,8 @@ _close_open_fds_maybe_unsafe(int start_fd, PyObject* py_fds_to_keep)
         proc_fd_dir = opendir(FD_DIR);
     if (!proc_fd_dir) {
         /* No way to get a list of open fds. */
-        _close_range_except(start_fd, -1, py_fds_to_keep, _unsafe_closer);
+        _close_range_except(start_fd, -1, fds_to_keep, fds_to_keep_len,
+                            _unsafe_closer);
     } else {
         struct dirent *dir_entry;
 #ifdef HAVE_DIRFD
@@ -407,14 +530,16 @@ _close_open_fds_maybe_unsafe(int start_fd, PyObject* py_fds_to_keep)
             if ((fd = _pos_int_from_ascii(dir_entry->d_name)) < 0)
                 continue;  /* Not a number. */
             if (fd != fd_used_by_opendir && fd >= start_fd &&
-                !_is_fd_in_sorted_fd_sequence(fd, py_fds_to_keep)) {
+                !_is_fd_in_sorted_fd_sequence(fd, fds_to_keep,
+                                              fds_to_keep_len)) {
                 close(fd);
             }
             errno = 0;
         }
         if (errno) {
             /* readdir error, revert behavior. Highly Unlikely. */
-            _close_range_except(start_fd, -1, py_fds_to_keep, _unsafe_closer);
+            _close_range_except(start_fd, -1, fds_to_keep, fds_to_keep_len,
+                                _unsafe_closer);
         }
         closedir(proc_fd_dir);
     }
@@ -442,16 +567,16 @@ _close_range_closer(int first, int last)
 #endif
 
 static void
-_close_open_fds(int start_fd, PyObject* py_fds_to_keep)
+_close_open_fds(int start_fd, int *fds_to_keep, Py_ssize_t fds_to_keep_len)
 {
 #ifdef HAVE_ASYNC_SAFE_CLOSE_RANGE
     if (_close_range_except(
-            start_fd, INT_MAX, py_fds_to_keep,
+            start_fd, INT_MAX, fds_to_keep, fds_to_keep_len,
             _close_range_closer) == 0) {
         return;
     }
 #endif
-    _close_open_fds_fallback(start_fd, py_fds_to_keep);
+    _close_open_fds_fallback(start_fd, fds_to_keep, fds_to_keep_len);
 }
 
 #ifdef VFORK_USABLE
@@ -519,7 +644,7 @@ reset_signal_handlers(const sigset_t *child_sigmask)
  * required by POSIX but not supported natively on Linux. Another reason to
  * avoid this family of functions is that sharing an address space between
  * processes running with different privileges is inherently insecure.
- * See bpo-35823 for further discussion and references.
+ * See https://bugs.python.org/issue35823 for discussion and references.
  *
  * In some C libraries, setrlimit() has the same thread list/signalling
  * behavior since resource limits were per-thread attributes before
@@ -544,7 +669,7 @@ child_exec(char *const exec_array[],
            Py_ssize_t extra_group_size, const gid_t *extra_groups,
            uid_t uid, int child_umask,
            const void *child_sigmask,
-           PyObject *py_fds_to_keep,
+           int *fds_to_keep, Py_ssize_t fds_to_keep_len,
            PyObject *preexec_fn,
            PyObject *preexec_fn_args_tuple)
 {
@@ -554,7 +679,7 @@ child_exec(char *const exec_array[],
     /* Buffer large enough to hold a hex integer.  We can't malloc. */
     char hex_errno[sizeof(saved_errno)*2+1];
 
-    if (make_inheritable(py_fds_to_keep, errpipe_write) < 0)
+    if (make_inheritable(fds_to_keep, fds_to_keep_len, errpipe_write) < 0)
         goto error;
 
     /* Close parent's pipe ends. */
@@ -616,8 +741,9 @@ child_exec(char *const exec_array[],
     if (child_umask >= 0)
         umask(child_umask);  /* umask() always succeeds. */
 
-    if (restore_signals)
+    if (restore_signals) {
         _Py_RestoreSignals();
+    }
 
 #ifdef VFORK_USABLE
     if (child_sigmask) {
@@ -641,8 +767,10 @@ child_exec(char *const exec_array[],
 #endif
 
 #ifdef HAVE_SETGROUPS
-    if (extra_group_size > 0)
+    if (extra_group_size >= 0) {
+        assert((extra_group_size == 0) == (extra_groups == NULL));
         POSIX_CALL(setgroups(extra_group_size, extra_groups));
+    }
 #endif /* HAVE_SETGROUPS */
 
 #ifdef HAVE_SETREGID
@@ -676,7 +804,7 @@ child_exec(char *const exec_array[],
     /* close FDs after executing preexec_fn, which might open FDs */
     if (close_fds) {
         /* TODO HP-UX could use pstat_getproc() if anyone cares about it. */
-        _close_open_fds(3, py_fds_to_keep);
+        _close_open_fds(3, fds_to_keep, fds_to_keep_len);
     }
 
     /* This loop matches the Lib/os.py _execvpe()'s PATH search when */
@@ -750,7 +878,7 @@ do_fork_exec(char *const exec_array[],
              Py_ssize_t extra_group_size, const gid_t *extra_groups,
              uid_t uid, int child_umask,
              const void *child_sigmask,
-             PyObject *py_fds_to_keep,
+             int *fds_to_keep, Py_ssize_t fds_to_keep_len,
              PyObject *preexec_fn,
              PyObject *preexec_fn_args_tuple)
 {
@@ -758,6 +886,7 @@ do_fork_exec(char *const exec_array[],
     pid_t pid;
 
 #ifdef VFORK_USABLE
+    PyThreadState *vfork_tstate_save;
     if (child_sigmask) {
         /* These are checked by our caller; verify them in debug builds. */
         assert(uid == (uid_t)-1);
@@ -765,7 +894,22 @@ do_fork_exec(char *const exec_array[],
         assert(extra_group_size < 0);
         assert(preexec_fn == Py_None);
 
+        /* Drop the GIL so that other threads can continue execution while this
+         * thread in the parent remains blocked per vfork-semantics on the
+         * child's exec syscall outcome. Exec does filesystem access which
+         * can take an arbitrarily long time. This addresses GH-104372.
+         *
+         * The vfork'ed child still runs in our address space. Per POSIX it
+         * must be limited to nothing but exec, but the Linux implementation
+         * is a little more usable. See the child_exec() comment - The child
+         * MUST NOT re-acquire the GIL.
+         */
+        vfork_tstate_save = PyEval_SaveThread();
         pid = vfork();
+        if (pid != 0) {
+            // Not in the child process, reacquire the GIL.
+            PyEval_RestoreThread(vfork_tstate_save);
+        }
         if (pid == (pid_t)-1) {
             /* If vfork() fails, fall back to using fork(). When it isn't
              * allowed in a process by the kernel, vfork can return -1
@@ -779,6 +923,7 @@ do_fork_exec(char *const exec_array[],
     }
 
     if (pid != 0) {
+        // Parent process.
         return pid;
     }
 
@@ -801,7 +946,8 @@ do_fork_exec(char *const exec_array[],
                close_fds, restore_signals, call_setsid, pgid_to_set,
                gid, extra_group_size, extra_groups,
                uid, child_umask, child_sigmask,
-               py_fds_to_keep, preexec_fn, preexec_fn_args_tuple);
+               fds_to_keep, fds_to_keep_len,
+               preexec_fn, preexec_fn_args_tuple);
     _exit(255);
     return 0;  /* Dead code to avoid a potential compiler warning. */
 }
@@ -878,11 +1024,17 @@ subprocess_fork_exec_impl(PyObject *module, PyObject *process_args,
     pid_t pid = -1;
     int need_to_reenable_gc = 0;
     char *const *argv = NULL, *const *envp = NULL;
-    Py_ssize_t extra_group_size = 0;
     int need_after_fork = 0;
     int saved_errno = 0;
+    int *c_fds_to_keep = NULL;
+    Py_ssize_t fds_to_keep_len = PyTuple_GET_SIZE(py_fds_to_keep);
 
-    PyInterpreterState *interp = PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if ((preexec_fn != Py_None) && interp->finalizing) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "preexec_fn not supported at interpreter shutdown");
+        return NULL;
+    }
     if ((preexec_fn != Py_None) && (interp != PyInterpreterState_Main())) {
         PyErr_SetString(PyExc_RuntimeError,
                         "preexec_fn not supported within subinterpreters");
@@ -952,6 +1104,13 @@ subprocess_fork_exec_impl(PyObject *module, PyObject *process_args,
         cwd = PyBytes_AsString(cwd_obj2);
     }
 
+    // Special initial value meaning that subprocess API was called with
+    // extra_groups=None leading to _posixsubprocess.fork_exec(gids=None).
+    // We use this to differentiate between code desiring a setgroups(0, NULL)
+    // call vs no call at all.  The fast vfork() code path could be used when
+    // there is no setgroups call.
+    Py_ssize_t extra_group_size = -2;
+
     if (extra_groups_packed != Py_None) {
 #ifdef HAVE_SETGROUPS
         if (!PyList_Check(extra_groups_packed)) {
@@ -1031,6 +1190,15 @@ subprocess_fork_exec_impl(PyObject *module, PyObject *process_args,
 #endif /* HAVE_SETREUID */
     }
 
+    c_fds_to_keep = PyMem_Malloc(fds_to_keep_len * sizeof(int));
+    if (c_fds_to_keep == NULL) {
+        PyErr_SetString(PyExc_MemoryError, "failed to malloc c_fds_to_keep");
+        goto cleanup;
+    }
+    if (convert_fds_to_keep_to_c(py_fds_to_keep, c_fds_to_keep) < 0) {
+        goto cleanup;
+    }
+
     /* This must be the last thing done before fork() because we do not
      * want to call PyOS_BeforeFork() if there is any chance of another
      * error leading to the cleanup: code without calling fork(). */
@@ -1073,7 +1241,8 @@ subprocess_fork_exec_impl(PyObject *module, PyObject *process_args,
                        close_fds, restore_signals, call_setsid, pgid_to_set,
                        gid, extra_group_size, extra_groups,
                        uid, child_umask, old_sigmask,
-                       py_fds_to_keep, preexec_fn, preexec_fn_args_tuple);
+                       c_fds_to_keep, fds_to_keep_len,
+                       preexec_fn, preexec_fn_args_tuple);
 
     /* Parent (original) process */
     if (pid == (pid_t)-1) {
@@ -1103,6 +1272,10 @@ subprocess_fork_exec_impl(PyObject *module, PyObject *process_args,
         PyOS_AfterFork_Parent();
 
 cleanup:
+    if (c_fds_to_keep != NULL) {
+        PyMem_Free(c_fds_to_keep);
+    }
+
     if (saved_errno != 0) {
         errno = saved_errno;
         /* We can't call this above as PyOS_AfterFork_Parent() calls back
diff --git a/Modules/_queuemodule.c b/Modules/_queuemodule.c
index d36a911a57c02c..81a06cdb79a4f2 100644
--- a/Modules/_queuemodule.c
+++ b/Modules/_queuemodule.c
@@ -3,8 +3,10 @@
 #endif
 
 #include "Python.h"
+#include "pycore_ceval.h"         // _PyEval_MakePendingCalls()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_time.h"          // _PyTime_t
+
 #include <stddef.h>               // offsetof()
 
 typedef struct {
@@ -210,6 +212,9 @@ _queue_SimpleQueue_get_impl(simplequeueobject *self, PyTypeObject *cls,
     PyObject *item;
     PyLockStatus r;
     PY_TIMEOUT_T microseconds;
+    PyThreadState *tstate = PyThreadState_Get();
+
+    // XXX Use PyThread_ParseTimeoutArg().
 
     if (block == 0) {
         /* Non-blocking */
@@ -253,7 +258,7 @@ _queue_SimpleQueue_get_impl(simplequeueobject *self, PyTypeObject *cls,
             Py_END_ALLOW_THREADS
         }
 
-        if (r == PY_LOCK_INTR && Py_MakePendingCalls() < 0) {
+        if (r == PY_LOCK_INTR && _PyEval_MakePendingCalls(tstate) < 0) {
             return NULL;
         }
         if (r == PY_LOCK_FAILURE) {
@@ -371,7 +376,7 @@ static PyMethodDef simplequeue_methods[] = {
 };
 
 static struct PyMemberDef simplequeue_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(simplequeueobject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(simplequeueobject, weakreflist), Py_READONLY},
     {NULL},
 };
 
diff --git a/Modules/_randommodule.c b/Modules/_randommodule.c
index fda5ef267fb470..4403e1d132c057 100644
--- a/Modules/_randommodule.c
+++ b/Modules/_randommodule.c
@@ -71,14 +71,19 @@
 #endif
 
 #include "Python.h"
+#include "pycore_long.h"          // _PyLong_NumBits()
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "pycore_runtime.h"
+#include "pycore_pylifecycle.h"   // _PyOS_URandomNonblock()
+
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // getpid()
+#endif
 #ifdef HAVE_PROCESS_H
 #  include <process.h>            // getpid()
 #endif
-
 #ifdef MS_WINDOWS
-#  include <windows.h>
+#  include <windows.h>            // GetCurrentProcessId()
 #endif
 
 /* Period parameters -- These are all magic.  Don't change. */
@@ -170,6 +175,7 @@ genrand_uint32(RandomObject *self)
  */
 
 /*[clinic input]
+@critical_section
 _random.Random.random
 
   self: self(type="RandomObject *")
@@ -179,7 +185,7 @@ random() -> x in the interval [0, 1).
 
 static PyObject *
 _random_Random_random_impl(RandomObject *self)
-/*[clinic end generated code: output=117ff99ee53d755c input=afb2a59cbbb00349]*/
+/*[clinic end generated code: output=117ff99ee53d755c input=26492e52d26e8b7b]*/
 {
     uint32_t a=genrand_uint32(self)>>5, b=genrand_uint32(self)>>6;
     return PyFloat_FromDouble((a*67108864.0+b)*(1.0/9007199254740992.0));
@@ -363,6 +369,7 @@ random_seed(RandomObject *self, PyObject *arg)
 }
 
 /*[clinic input]
+@critical_section
 _random.Random.seed
 
   self: self(type="RandomObject *")
@@ -377,7 +384,7 @@ of the current time and the process identifier.
 
 static PyObject *
 _random_Random_seed_impl(RandomObject *self, PyObject *n)
-/*[clinic end generated code: output=0fad1e16ba883681 input=78d6ef0d52532a54]*/
+/*[clinic end generated code: output=0fad1e16ba883681 input=46d01d2ba938c7b1]*/
 {
     if (random_seed(self, n) < 0) {
         return NULL;
@@ -386,6 +393,7 @@ _random_Random_seed_impl(RandomObject *self, PyObject *n)
 }
 
 /*[clinic input]
+@critical_section
 _random.Random.getstate
 
   self: self(type="RandomObject *")
@@ -395,7 +403,7 @@ getstate() -> tuple containing the current state.
 
 static PyObject *
 _random_Random_getstate_impl(RandomObject *self)
-/*[clinic end generated code: output=bf6cef0c092c7180 input=b937a487928c0e89]*/
+/*[clinic end generated code: output=bf6cef0c092c7180 input=b6621f31eb639694]*/
 {
     PyObject *state;
     PyObject *element;
@@ -423,6 +431,7 @@ _random_Random_getstate_impl(RandomObject *self)
 
 
 /*[clinic input]
+@critical_section
 _random.Random.setstate
 
   self: self(type="RandomObject *")
@@ -433,8 +442,8 @@ setstate(state) -> None.  Restores generator state.
 [clinic start generated code]*/
 
 static PyObject *
-_random_Random_setstate(RandomObject *self, PyObject *state)
-/*[clinic end generated code: output=fd1c3cd0037b6681 input=b3b4efbb1bc66af8]*/
+_random_Random_setstate_impl(RandomObject *self, PyObject *state)
+/*[clinic end generated code: output=babfc2c2eac6b027 input=358e898ec07469b7]*/
 {
     int i;
     unsigned long element;
@@ -474,7 +483,7 @@ _random_Random_setstate(RandomObject *self, PyObject *state)
 }
 
 /*[clinic input]
-
+@critical_section
 _random.Random.getrandbits
 
   self: self(type="RandomObject *")
@@ -486,7 +495,7 @@ getrandbits(k) -> x.  Generates an int with k random bits.
 
 static PyObject *
 _random_Random_getrandbits_impl(RandomObject *self, int k)
-/*[clinic end generated code: output=b402f82a2158887f input=8c0e6396dd176fc0]*/
+/*[clinic end generated code: output=b402f82a2158887f input=87603cd60f79f730]*/
 {
     int i, words;
     uint32_t r;
diff --git a/Modules/_scproxy.c b/Modules/_scproxy.c
index 0df0324df55f7d..7920d2c2b8739d 100644
--- a/Modules/_scproxy.c
+++ b/Modules/_scproxy.c
@@ -2,6 +2,16 @@
  * Helper method for urllib to fetch the proxy configuration settings
  * using the SystemConfiguration framework.
  */
+
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
+#endif
+
 #include <Python.h>
 #include <SystemConfiguration/SystemConfiguration.h>
 
@@ -21,8 +31,7 @@ cfstring_to_pystring(CFStringRef ref)
 
     s = CFStringGetCStringPtr(ref, kCFStringEncodingUTF8);
     if (s) {
-        return PyUnicode_DecodeUTF8(
-                        s, strlen(s), NULL);
+        return PyUnicode_DecodeUTF8(s, strlen(s), NULL);
 
     } else {
         CFIndex len = CFStringGetLength(ref);
@@ -43,8 +52,7 @@ cfstring_to_pystring(CFStringRef ref)
             PyMem_Free(buf);
             return NULL;
         } else {
-            result = PyUnicode_DecodeUTF8(
-                            buf, strlen(buf), NULL);
+            result = PyUnicode_DecodeUTF8(buf, strlen(buf), NULL);
             PyMem_Free(buf);
         }
         return result;
@@ -84,7 +92,7 @@ get_proxy_settings(PyObject* Py_UNUSED(mod), PyObject *Py_UNUSED(ignored))
     if (v == NULL) goto error;
 
     r = PyDict_SetItemString(result, "exclude_simple", v);
-    Py_SETREF(v, NULL);
+    Py_CLEAR(v);
     if (r == -1) goto error;
 
     anArray = CFDictionaryGetValue(proxyDict,
@@ -104,13 +112,11 @@ get_proxy_settings(PyObject* Py_UNUSED(mod), PyObject *Py_UNUSED(ignored))
 
             aString = CFArrayGetValueAtIndex(anArray, i);
             if (aString == NULL) {
-                PyTuple_SetItem(v, i, Py_None);
-                Py_INCREF(Py_None);
+                PyTuple_SetItem(v, i, Py_NewRef(Py_None));
             } else {
                 PyObject* t = cfstring_to_pystring(aString);
                 if (!t) {
-                    PyTuple_SetItem(v, i, Py_None);
-                    Py_INCREF(Py_None);
+                    PyTuple_SetItem(v, i, Py_NewRef(Py_None));
                 } else {
                     PyTuple_SetItem(v, i, t);
                 }
@@ -148,15 +154,13 @@ set_proxy(PyObject* proxies, const char* proto, CFDictionaryRef proxyDict,
             if (h) {
                 if (aNum) {
                     int32_t port = cfnum_to_int32(aNum);
-                    v = PyUnicode_FromFormat("http://%U:%ld",
-                        h, (long)port);
+                    v = PyUnicode_FromFormat("http://%U:%ld", h, (long)port);
                 } else {
                     v = PyUnicode_FromFormat("http://%U", h);
                 }
                 Py_DECREF(h);
                 if (!v) return -1;
-                r = PyDict_SetItemString(proxies, proto,
-                    v);
+                r = PyDict_SetItemString(proxies, proto, v);
                 Py_DECREF(v);
                 return r;
             }
@@ -249,16 +253,8 @@ static struct PyModuleDef _scproxy_module = {
     .m_slots = _scproxy_slots,
 };
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 PyMODINIT_FUNC
 PyInit__scproxy(void)
 {
     return PyModuleDef_Init(&_scproxy_module);
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Modules/_sqlite/blob.c b/Modules/_sqlite/blob.c
index 76d261baf00f38..f099020c5f4e6f 100644
--- a/Modules/_sqlite/blob.c
+++ b/Modules/_sqlite/blob.c
@@ -1,5 +1,10 @@
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "blob.h"
 #include "util.h"
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
 
 #define clinic_state() (pysqlite_get_state_by_type(Py_TYPE(self)))
 #include "clinic/blob.c.h"
@@ -97,10 +102,12 @@ pysqlite_close_all_blobs(pysqlite_Connection *self)
 {
     for (int i = 0; i < PyList_GET_SIZE(self->blobs); i++) {
         PyObject *weakref = PyList_GET_ITEM(self->blobs, i);
-        PyObject *blob = PyWeakref_GetObject(weakref);
-        if (!Py_IsNone(blob)) {
-            close_blob((pysqlite_Blob *)blob);
+        PyObject *blob = _PyWeakref_GET_REF(weakref);
+        if (blob == NULL) {
+            continue;
         }
+        close_blob((pysqlite_Blob *)blob);
+        Py_DECREF(blob);
     }
 }
 
@@ -108,14 +115,6 @@ static void
 blob_seterror(pysqlite_Blob *self, int rc)
 {
     assert(self->connection != NULL);
-#if SQLITE_VERSION_NUMBER < 3008008
-    // SQLite pre 3.8.8 does not set this blob error on the connection
-    if (rc == SQLITE_ABORT) {
-        PyErr_SetString(self->connection->OperationalError,
-                        "Cannot operate on an expired blob handle");
-        return;
-    }
-#endif
     _pysqlite_seterror(self->connection->state, self->connection->db);
 }
 
@@ -578,7 +577,7 @@ static PyMethodDef blob_methods[] = {
 };
 
 static struct PyMemberDef blob_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(pysqlite_Blob, in_weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(pysqlite_Blob, in_weakreflist), Py_READONLY},
     {NULL},
 };
 
diff --git a/Modules/_sqlite/clinic/_sqlite3.connect.c.h b/Modules/_sqlite/clinic/_sqlite3.connect.c.h
new file mode 100644
index 00000000000000..1bcda7702c2568
--- /dev/null
+++ b/Modules/_sqlite/clinic/_sqlite3.connect.c.h
@@ -0,0 +1,31 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
+#endif
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
+
+PyDoc_STRVAR(pysqlite_connect__doc__,
+"connect($module, /, database, timeout=5.0, detect_types=0,\n"
+"        isolation_level=\'\', check_same_thread=True,\n"
+"        factory=ConnectionType, cached_statements=128, uri=False, *,\n"
+"        autocommit=sqlite3.LEGACY_TRANSACTION_CONTROL)\n"
+"--\n"
+"\n"
+"Open a connection to the SQLite database file \'database\'.\n"
+"\n"
+"You can use \":memory:\" to open a database connection to a database that\n"
+"resides in RAM instead of on disk.\n"
+"\n"
+"Note: Passing more than 1 positional argument to _sqlite3.connect() is\n"
+"deprecated. Parameters \'timeout\', \'detect_types\', \'isolation_level\',\n"
+"\'check_same_thread\', \'factory\', \'cached_statements\' and \'uri\' will\n"
+"become keyword-only parameters in Python 3.15.\n"
+"");
+
+#define PYSQLITE_CONNECT_METHODDEF    \
+    {"connect", _PyCFunction_CAST(pysqlite_connect), METH_FASTCALL|METH_KEYWORDS, pysqlite_connect__doc__},
+/*[clinic end generated code: output=69b9b00da71c3c0a input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/blob.c.h b/Modules/_sqlite/clinic/blob.c.h
index f3d8a35be46138..b95ba948aaf97f 100644
--- a/Modules/_sqlite/clinic/blob.c.h
+++ b/Modules/_sqlite/clinic/blob.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(blob_close__doc__,
 "close($self, /)\n"
@@ -57,7 +53,7 @@ blob_read(pysqlite_Blob *self, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 1) {
         goto skip_optional;
     }
-    length = _PyLong_AsInt(args[0]);
+    length = PyLong_AsInt(args[0]);
     if (length == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -92,10 +88,6 @@ blob_write(pysqlite_Blob *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = blob_write_impl(self, &data);
 
 exit:
@@ -133,14 +125,14 @@ blob_seek(pysqlite_Blob *self, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("seek", nargs, 1, 2)) {
         goto exit;
     }
-    offset = _PyLong_AsInt(args[0]);
+    offset = PyLong_AsInt(args[0]);
     if (offset == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (nargs < 2) {
         goto skip_optional;
     }
-    origin = _PyLong_AsInt(args[1]);
+    origin = PyLong_AsInt(args[1]);
     if (origin == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -219,4 +211,4 @@ blob_exit(pysqlite_Blob *self, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=ad6a402f70e85977 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=31abd55660e0c5af input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/connection.c.h b/Modules/_sqlite/clinic/connection.c.h
index 417abcc4626170..db5eb77891e52e 100644
--- a/Modules/_sqlite/clinic/connection.c.h
+++ b/Modules/_sqlite/clinic/connection.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static int
 pysqlite_connection_init_impl(pysqlite_Connection *self, PyObject *database,
@@ -16,6 +16,17 @@ pysqlite_connection_init_impl(pysqlite_Connection *self, PyObject *database,
                               int cache_size, int uri,
                               enum autocommit_mode autocommit);
 
+// Emit compiler warnings when we get to Python 3.15.
+#if PY_VERSION_HEX >= 0x030f00C0
+#  error "Update the clinic input of '_sqlite3.Connection.__init__'."
+#elif PY_VERSION_HEX >= 0x030f00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_sqlite3.Connection.__init__'.")
+#  else
+#    warning "Update the clinic input of '_sqlite3.Connection.__init__'."
+#  endif
+#endif
+
 static int
 pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
 {
@@ -59,6 +70,17 @@ pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
     int uri = 0;
     enum autocommit_mode autocommit = LEGACY_TRANSACTION_CONTROL;
 
+    if (nargs > 1 && nargs <= 8) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 1 positional argument to _sqlite3.Connection()"
+                " is deprecated. Parameters 'timeout', 'detect_types', "
+                "'isolation_level', 'check_same_thread', 'factory', "
+                "'cached_statements' and 'uri' will become keyword-only "
+                "parameters in Python 3.15.", 1))
+        {
+            goto exit;
+        }
+    }
     fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 8, 0, argsbuf);
     if (!fastargs) {
         goto exit;
@@ -83,7 +105,7 @@ pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[2]) {
-        detect_types = _PyLong_AsInt(fastargs[2]);
+        detect_types = PyLong_AsInt(fastargs[2]);
         if (detect_types == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -115,7 +137,7 @@ pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[6]) {
-        cache_size = _PyLong_AsInt(fastargs[6]);
+        cache_size = PyLong_AsInt(fastargs[6]);
         if (cache_size == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -396,7 +418,12 @@ PyDoc_STRVAR(pysqlite_connection_create_function__doc__,
 "create_function($self, /, name, narg, func, *, deterministic=False)\n"
 "--\n"
 "\n"
-"Creates a new function.");
+"Creates a new function.\n"
+"\n"
+"Note: Passing keyword arguments \'name\', \'narg\' and \'func\' to\n"
+"_sqlite3.Connection.create_function() is deprecated. Parameters\n"
+"\'name\', \'narg\' and \'func\' will become positional-only in Python 3.15.\n"
+"");
 
 #define PYSQLITE_CONNECTION_CREATE_FUNCTION_METHODDEF    \
     {"create_function", _PyCFunction_CAST(pysqlite_connection_create_function), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, pysqlite_connection_create_function__doc__},
@@ -407,6 +434,17 @@ pysqlite_connection_create_function_impl(pysqlite_Connection *self,
                                          int narg, PyObject *func,
                                          int deterministic);
 
+// Emit compiler warnings when we get to Python 3.15.
+#if PY_VERSION_HEX >= 0x030f00C0
+#  error "Update the clinic input of '_sqlite3.Connection.create_function'."
+#elif PY_VERSION_HEX >= 0x030f00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_sqlite3.Connection.create_function'.")
+#  else
+#    warning "Update the clinic input of '_sqlite3.Connection.create_function'."
+#  endif
+#endif
+
 static PyObject *
 pysqlite_connection_create_function(pysqlite_Connection *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
@@ -447,6 +485,16 @@ pysqlite_connection_create_function(pysqlite_Connection *self, PyTypeObject *cls
     if (!args) {
         goto exit;
     }
+    if (nargs < 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'name', 'narg' and 'func' to "
+                "_sqlite3.Connection.create_function() is deprecated. Parameters "
+                "'name', 'narg' and 'func' will become positional-only in Python "
+                "3.15.", 1))
+        {
+            goto exit;
+        }
+    }
     if (!PyUnicode_Check(args[0])) {
         _PyArg_BadArgument("create_function", "argument 'name'", "str", args[0]);
         goto exit;
@@ -460,7 +508,7 @@ pysqlite_connection_create_function(pysqlite_Connection *self, PyTypeObject *cls
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
-    narg = _PyLong_AsInt(args[1]);
+    narg = PyLong_AsInt(args[1]);
     if (narg == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -543,7 +591,7 @@ create_window_function(pysqlite_Connection *self, PyTypeObject *cls, PyObject *c
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
-    num_params = _PyLong_AsInt(args[1]);
+    num_params = PyLong_AsInt(args[1]);
     if (num_params == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -560,7 +608,13 @@ PyDoc_STRVAR(pysqlite_connection_create_aggregate__doc__,
 "create_aggregate($self, /, name, n_arg, aggregate_class)\n"
 "--\n"
 "\n"
-"Creates a new aggregate.");
+"Creates a new aggregate.\n"
+"\n"
+"Note: Passing keyword arguments \'name\', \'n_arg\' and \'aggregate_class\'\n"
+"to _sqlite3.Connection.create_aggregate() is deprecated. Parameters\n"
+"\'name\', \'n_arg\' and \'aggregate_class\' will become positional-only in\n"
+"Python 3.15.\n"
+"");
 
 #define PYSQLITE_CONNECTION_CREATE_AGGREGATE_METHODDEF    \
     {"create_aggregate", _PyCFunction_CAST(pysqlite_connection_create_aggregate), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, pysqlite_connection_create_aggregate__doc__},
@@ -571,6 +625,17 @@ pysqlite_connection_create_aggregate_impl(pysqlite_Connection *self,
                                           const char *name, int n_arg,
                                           PyObject *aggregate_class);
 
+// Emit compiler warnings when we get to Python 3.15.
+#if PY_VERSION_HEX >= 0x030f00C0
+#  error "Update the clinic input of '_sqlite3.Connection.create_aggregate'."
+#elif PY_VERSION_HEX >= 0x030f00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_sqlite3.Connection.create_aggregate'.")
+#  else
+#    warning "Update the clinic input of '_sqlite3.Connection.create_aggregate'."
+#  endif
+#endif
+
 static PyObject *
 pysqlite_connection_create_aggregate(pysqlite_Connection *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
@@ -609,6 +674,16 @@ pysqlite_connection_create_aggregate(pysqlite_Connection *self, PyTypeObject *cl
     if (!args) {
         goto exit;
     }
+    if (nargs < 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'name', 'n_arg' and 'aggregate_class' "
+                "to _sqlite3.Connection.create_aggregate() is deprecated. "
+                "Parameters 'name', 'n_arg' and 'aggregate_class' will become "
+                "positional-only in Python 3.15.", 1))
+        {
+            goto exit;
+        }
+    }
     if (!PyUnicode_Check(args[0])) {
         _PyArg_BadArgument("create_aggregate", "argument 'name'", "str", args[0]);
         goto exit;
@@ -622,7 +697,7 @@ pysqlite_connection_create_aggregate(pysqlite_Connection *self, PyTypeObject *cl
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
-    n_arg = _PyLong_AsInt(args[1]);
+    n_arg = PyLong_AsInt(args[1]);
     if (n_arg == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -637,7 +712,12 @@ PyDoc_STRVAR(pysqlite_connection_set_authorizer__doc__,
 "set_authorizer($self, /, authorizer_callback)\n"
 "--\n"
 "\n"
-"Sets authorizer callback.");
+"Set authorizer callback.\n"
+"\n"
+"Note: Passing keyword argument \'authorizer_callback\' to\n"
+"_sqlite3.Connection.set_authorizer() is deprecated. Parameter\n"
+"\'authorizer_callback\' will become positional-only in Python 3.15.\n"
+"");
 
 #define PYSQLITE_CONNECTION_SET_AUTHORIZER_METHODDEF    \
     {"set_authorizer", _PyCFunction_CAST(pysqlite_connection_set_authorizer), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, pysqlite_connection_set_authorizer__doc__},
@@ -647,13 +727,24 @@ pysqlite_connection_set_authorizer_impl(pysqlite_Connection *self,
                                         PyTypeObject *cls,
                                         PyObject *callable);
 
+// Emit compiler warnings when we get to Python 3.15.
+#if PY_VERSION_HEX >= 0x030f00C0
+#  error "Update the clinic input of '_sqlite3.Connection.set_authorizer'."
+#elif PY_VERSION_HEX >= 0x030f00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_sqlite3.Connection.set_authorizer'.")
+#  else
+#    warning "Update the clinic input of '_sqlite3.Connection.set_authorizer'."
+#  endif
+#endif
+
 static PyObject *
 pysqlite_connection_set_authorizer(pysqlite_Connection *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
-    #define NUM_KEYWORDS 1
+    #define NUM_KEYWORDS 2
     static struct {
         PyGC_Head _this_is_not_used;
         PyObject_VAR_HEAD
@@ -683,6 +774,16 @@ pysqlite_connection_set_authorizer(pysqlite_Connection *self, PyTypeObject *cls,
     if (!args) {
         goto exit;
     }
+    if (nargs < 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'authorizer_callback' to "
+                "_sqlite3.Connection.set_authorizer() is deprecated. Parameter "
+                "'authorizer_callback' will become positional-only in Python "
+                "3.15.", 1))
+        {
+            goto exit;
+        }
+    }
     callable = args[0];
     return_value = pysqlite_connection_set_authorizer_impl(self, cls, callable);
 
@@ -694,7 +795,22 @@ PyDoc_STRVAR(pysqlite_connection_set_progress_handler__doc__,
 "set_progress_handler($self, /, progress_handler, n)\n"
 "--\n"
 "\n"
-"Sets progress handler callback.");
+"Set progress handler callback.\n"
+"\n"
+"  progress_handler\n"
+"    A callable that takes no arguments.\n"
+"    If the callable returns non-zero, the current query is terminated,\n"
+"    and an exception is raised.\n"
+"  n\n"
+"    The number of SQLite virtual machine instructions that are\n"
+"    executed between invocations of \'progress_handler\'.\n"
+"\n"
+"If \'progress_handler\' is None or \'n\' is 0, the progress handler is disabled.\n"
+"\n"
+"Note: Passing keyword argument \'progress_handler\' to\n"
+"_sqlite3.Connection.set_progress_handler() is deprecated. Parameter\n"
+"\'progress_handler\' will become positional-only in Python 3.15.\n"
+"");
 
 #define PYSQLITE_CONNECTION_SET_PROGRESS_HANDLER_METHODDEF    \
     {"set_progress_handler", _PyCFunction_CAST(pysqlite_connection_set_progress_handler), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, pysqlite_connection_set_progress_handler__doc__},
@@ -704,13 +820,24 @@ pysqlite_connection_set_progress_handler_impl(pysqlite_Connection *self,
                                               PyTypeObject *cls,
                                               PyObject *callable, int n);
 
+// Emit compiler warnings when we get to Python 3.15.
+#if PY_VERSION_HEX >= 0x030f00C0
+#  error "Update the clinic input of '_sqlite3.Connection.set_progress_handler'."
+#elif PY_VERSION_HEX >= 0x030f00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_sqlite3.Connection.set_progress_handler'.")
+#  else
+#    warning "Update the clinic input of '_sqlite3.Connection.set_progress_handler'."
+#  endif
+#endif
+
 static PyObject *
 pysqlite_connection_set_progress_handler(pysqlite_Connection *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
-    #define NUM_KEYWORDS 2
+    #define NUM_KEYWORDS 3
     static struct {
         PyGC_Head _this_is_not_used;
         PyObject_VAR_HEAD
@@ -741,8 +868,18 @@ pysqlite_connection_set_progress_handler(pysqlite_Connection *self, PyTypeObject
     if (!args) {
         goto exit;
     }
+    if (nargs < 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'progress_handler' to "
+                "_sqlite3.Connection.set_progress_handler() is deprecated. "
+                "Parameter 'progress_handler' will become positional-only in "
+                "Python 3.15.", 1))
+        {
+            goto exit;
+        }
+    }
     callable = args[0];
-    n = _PyLong_AsInt(args[1]);
+    n = PyLong_AsInt(args[1]);
     if (n == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -756,7 +893,12 @@ PyDoc_STRVAR(pysqlite_connection_set_trace_callback__doc__,
 "set_trace_callback($self, /, trace_callback)\n"
 "--\n"
 "\n"
-"Sets a trace callback called for each SQL statement (passed as unicode).");
+"Set a trace callback called for each SQL statement (passed as unicode).\n"
+"\n"
+"Note: Passing keyword argument \'trace_callback\' to\n"
+"_sqlite3.Connection.set_trace_callback() is deprecated. Parameter\n"
+"\'trace_callback\' will become positional-only in Python 3.15.\n"
+"");
 
 #define PYSQLITE_CONNECTION_SET_TRACE_CALLBACK_METHODDEF    \
     {"set_trace_callback", _PyCFunction_CAST(pysqlite_connection_set_trace_callback), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, pysqlite_connection_set_trace_callback__doc__},
@@ -766,13 +908,24 @@ pysqlite_connection_set_trace_callback_impl(pysqlite_Connection *self,
                                             PyTypeObject *cls,
                                             PyObject *callable);
 
+// Emit compiler warnings when we get to Python 3.15.
+#if PY_VERSION_HEX >= 0x030f00C0
+#  error "Update the clinic input of '_sqlite3.Connection.set_trace_callback'."
+#elif PY_VERSION_HEX >= 0x030f00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_sqlite3.Connection.set_trace_callback'.")
+#  else
+#    warning "Update the clinic input of '_sqlite3.Connection.set_trace_callback'."
+#  endif
+#endif
+
 static PyObject *
 pysqlite_connection_set_trace_callback(pysqlite_Connection *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
-    #define NUM_KEYWORDS 1
+    #define NUM_KEYWORDS 2
     static struct {
         PyGC_Head _this_is_not_used;
         PyObject_VAR_HEAD
@@ -802,6 +955,16 @@ pysqlite_connection_set_trace_callback(pysqlite_Connection *self, PyTypeObject *
     if (!args) {
         goto exit;
     }
+    if (nargs < 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'trace_callback' to "
+                "_sqlite3.Connection.set_trace_callback() is deprecated. "
+                "Parameter 'trace_callback' will become positional-only in Python"
+                " 3.15.", 1))
+        {
+            goto exit;
+        }
+    }
     callable = args[0];
     return_value = pysqlite_connection_set_trace_callback_impl(self, cls, callable);
 
@@ -966,9 +1129,6 @@ pysqlite_connection_execute(pysqlite_Connection *self, PyObject *const *args, Py
         _PyArg_BadArgument("execute", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     sql = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -1008,9 +1168,6 @@ pysqlite_connection_executemany(pysqlite_Connection *self, PyObject *const *args
         _PyArg_BadArgument("executemany", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     sql = args[0];
     parameters = args[1];
     return_value = pysqlite_connection_executemany_impl(self, sql, parameters);
@@ -1130,7 +1287,7 @@ pysqlite_connection_backup(pysqlite_Connection *self, PyObject *const *args, Py_
         goto skip_optional_kwonly;
     }
     if (args[1]) {
-        pages = _PyLong_AsInt(args[1]);
+        pages = PyLong_AsInt(args[1]);
         if (pages == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -1400,10 +1557,6 @@ deserialize(pysqlite_Connection *self, PyObject *const *args, Py_ssize_t nargs,
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("deserialize", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (!noptargs) {
         goto skip_optional_kwonly;
@@ -1522,11 +1675,11 @@ setlimit(pysqlite_Connection *self, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("setlimit", nargs, 2, 2)) {
         goto exit;
     }
-    category = _PyLong_AsInt(args[0]);
+    category = PyLong_AsInt(args[0]);
     if (category == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    limit = _PyLong_AsInt(args[1]);
+    limit = PyLong_AsInt(args[1]);
     if (limit == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1557,7 +1710,7 @@ getlimit(pysqlite_Connection *self, PyObject *arg)
     PyObject *return_value = NULL;
     int category;
 
-    category = _PyLong_AsInt(arg);
+    category = PyLong_AsInt(arg);
     if (category == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1592,7 +1745,7 @@ setconfig(pysqlite_Connection *self, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("setconfig", nargs, 1, 2)) {
         goto exit;
     }
-    op = _PyLong_AsInt(args[0]);
+    op = PyLong_AsInt(args[0]);
     if (op == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1632,7 +1785,7 @@ getconfig(pysqlite_Connection *self, PyObject *arg)
     int op;
     int _return_value;
 
-    op = _PyLong_AsInt(arg);
+    op = PyLong_AsInt(arg);
     if (op == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1665,4 +1818,4 @@ getconfig(pysqlite_Connection *self, PyObject *arg)
 #ifndef DESERIALIZE_METHODDEF
     #define DESERIALIZE_METHODDEF
 #endif /* !defined(DESERIALIZE_METHODDEF) */
-/*[clinic end generated code: output=834a99827555bf1a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=90b5b9c14261b8d7 input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/cursor.c.h b/Modules/_sqlite/clinic/cursor.c.h
index 43e912d1347963..a13e0d0745b58d 100644
--- a/Modules/_sqlite/clinic/cursor.c.h
+++ b/Modules/_sqlite/clinic/cursor.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 static int
 pysqlite_cursor_init_impl(pysqlite_Cursor *self,
@@ -65,9 +65,6 @@ pysqlite_cursor_execute(pysqlite_Cursor *self, PyObject *const *args, Py_ssize_t
         _PyArg_BadArgument("execute", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     sql = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -107,9 +104,6 @@ pysqlite_cursor_executemany(pysqlite_Cursor *self, PyObject *const *args, Py_ssi
         _PyArg_BadArgument("executemany", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     sql = args[0];
     seq_of_parameters = args[1];
     return_value = pysqlite_cursor_executemany_impl(self, sql, seq_of_parameters);
@@ -229,7 +223,7 @@ pysqlite_cursor_fetchmany(pysqlite_Cursor *self, PyObject *const *args, Py_ssize
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    maxrows = _PyLong_AsInt(args[0]);
+    maxrows = PyLong_AsInt(args[0]);
     if (maxrows == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -319,4 +313,4 @@ pysqlite_cursor_close(pysqlite_Cursor *self, PyObject *Py_UNUSED(ignored))
 {
     return pysqlite_cursor_close_impl(self);
 }
-/*[clinic end generated code: output=1f82e3c9791bb9a5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a8ce095c3c80cf65 input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/module.c.h b/Modules/_sqlite/clinic/module.c.h
index 12f60835880b10..529dc4e281e0eb 100644
--- a/Modules/_sqlite/clinic/module.c.h
+++ b/Modules/_sqlite/clinic/module.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(pysqlite_complete_statement__doc__,
 "complete_statement($module, /, statement)\n"
@@ -133,9 +133,6 @@ pysqlite_register_converter(PyObject *module, PyObject *const *args, Py_ssize_t
         _PyArg_BadArgument("register_converter", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     orig_name = args[0];
     callable = args[1];
     return_value = pysqlite_register_converter_impl(module, orig_name, callable);
@@ -162,7 +159,7 @@ pysqlite_enable_callback_trace(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int enable;
 
-    enable = _PyLong_AsInt(arg);
+    enable = PyLong_AsInt(arg);
     if (enable == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -211,4 +208,4 @@ pysqlite_adapt(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=39d38c6cfc455042 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=457ab0fdbb9e1880 input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/row.c.h b/Modules/_sqlite/clinic/row.c.h
index 89a48fd52da226..e8d1dbf2ba8bc9 100644
--- a/Modules/_sqlite/clinic/row.c.h
+++ b/Modules/_sqlite/clinic/row.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 static PyObject *
 pysqlite_row_new_impl(PyTypeObject *type, pysqlite_Cursor *cursor,
@@ -60,4 +56,4 @@ pysqlite_row_keys(pysqlite_Row *self, PyObject *Py_UNUSED(ignored))
 {
     return pysqlite_row_keys_impl(self);
 }
-/*[clinic end generated code: output=157b31ac3f6af1ba input=a9049054013a1b77]*/
+/*[clinic end generated code: output=788bf817acc02b8e input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index 7bbb462ed54dfa..0a6633972cc5ef 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -21,8 +21,12 @@
  * 3. This notice may not be removed or altered from any source distribution.
  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "module.h"
-#include "structmember.h"         // PyMemberDef
+
 #include "connection.h"
 #include "statement.h"
 #include "cursor.h"
@@ -30,11 +34,13 @@
 #include "prepare_protocol.h"
 #include "util.h"
 
-#include <stdbool.h>
+#include "pycore_import.h"        // _PyImport_GetModuleAttrString()
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+#include "pycore_pylifecycle.h"   // _Py_IsInterpreterFinalizing()
+#include "pycore_weakref.h"       // _PyWeakref_IS_DEAD()
 
-#if SQLITE_VERSION_NUMBER >= 3014000
-#define HAVE_TRACE_V2
-#endif
+#include <stdbool.h>
 
 #if SQLITE_VERSION_NUMBER >= 3025000
 #define HAVE_WINDOW_FUNCTIONS
@@ -70,16 +76,10 @@ isolation_level_converter(PyObject *str_or_none, const char **result)
         *result = NULL;
     }
     else if (PyUnicode_Check(str_or_none)) {
-        Py_ssize_t sz;
-        const char *str = PyUnicode_AsUTF8AndSize(str_or_none, &sz);
+        const char *str = _PyUnicode_AsUTF8NoNUL(str_or_none);
         if (str == NULL) {
             return 0;
         }
-        if (strlen(str) != (size_t)sz) {
-            PyErr_SetString(PyExc_ValueError, "embedded null character");
-            return 0;
-        }
-
         const char *level = get_isolation_level(str);
         if (level == NULL) {
             return 0;
@@ -146,7 +146,7 @@ static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
 static void free_callback_context(callback_context *ctx);
 static void set_callback_context(callback_context **ctx_pp,
                                  callback_context *ctx);
-static void connection_close(pysqlite_Connection *self);
+static int connection_close(pysqlite_Connection *self);
 PyObject *_pysqlite_query_execute(pysqlite_Cursor *, int, PyObject *, PyObject *);
 
 static PyObject *
@@ -209,11 +209,11 @@ class sqlite3_int64_converter(CConverter):
 [python start generated code]*/
 /*[python end generated code: output=da39a3ee5e6b4b0d input=dff8760fb1eba6a1]*/
 
-// NB: This needs to be in sync with the sqlite3.connect docstring
 /*[clinic input]
 _sqlite3.Connection.__init__ as pysqlite_connection_init
 
     database: object
+    * [from 3.15]
     timeout: double = 5.0
     detect_types: int = 0
     isolation_level: IsolationLevel = ""
@@ -232,7 +232,7 @@ pysqlite_connection_init_impl(pysqlite_Connection *self, PyObject *database,
                               int check_same_thread, PyObject *factory,
                               int cache_size, int uri,
                               enum autocommit_mode autocommit)
-/*[clinic end generated code: output=cba057313ea7712f input=9b0ab6c12f674fa3]*/
+/*[clinic end generated code: output=cba057313ea7712f input=219c3dbecbae7d99]*/
 {
     if (PySys_Audit("sqlite3.connect", "O", database) < 0) {
         return -1;
@@ -244,10 +244,13 @@ pysqlite_connection_init_impl(pysqlite_Connection *self, PyObject *database,
     }
 
     if (self->initialized) {
+        self->initialized = 0;
+
         PyTypeObject *tp = Py_TYPE(self);
         tp->tp_clear((PyObject *)self);
-        connection_close(self);
-        self->initialized = 0;
+        if (connection_close(self) < 0) {
+            return -1;
+        }
     }
 
     // Create and configure SQLite database object.
@@ -331,7 +334,9 @@ pysqlite_connection_init_impl(pysqlite_Connection *self, PyObject *database,
     self->initialized = 1;
 
     if (autocommit == AUTOCOMMIT_DISABLED) {
-        (void)connection_exec_stmt(self, "BEGIN");
+        if (connection_exec_stmt(self, "BEGIN") < 0) {
+            return -1;
+        }
     }
     return 0;
 
@@ -343,6 +348,34 @@ pysqlite_connection_init_impl(pysqlite_Connection *self, PyObject *database,
     return -1;
 }
 
+/*[clinic input]
+# Create a new destination 'connect' for the docstring and methoddef only.
+# This makes it possible to keep the signatures for Connection.__init__ and
+# sqlite3.connect() synchronised.
+output push
+destination connect new file '{dirname}/clinic/_sqlite3.connect.c.h'
+
+# Only output the docstring and the PyMethodDef entry.
+output everything suppress
+output docstring_definition connect
+output methoddef_define connect
+
+# Define the sqlite3.connect function by cloning Connection.__init__.
+_sqlite3.connect as pysqlite_connect = _sqlite3.Connection.__init__
+
+Open a connection to the SQLite database file 'database'.
+
+You can use ":memory:" to open a database connection to a database that
+resides in RAM instead of on disk.
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=92260edff95d1720]*/
+
+/*[clinic input]
+# Restore normal Argument Clinic operation for the rest of this file.
+output pop
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=b899ba9273edcce7]*/
+
 #define VISIT_CALLBACK_CONTEXT(ctx) \
 do {                                \
     if (ctx) {                      \
@@ -401,52 +434,91 @@ free_callback_contexts(pysqlite_Connection *self)
 static void
 remove_callbacks(sqlite3 *db)
 {
-#ifdef HAVE_TRACE_V2
-    sqlite3_trace_v2(db, SQLITE_TRACE_STMT, 0, 0);
-#else
-    sqlite3_trace(db, 0, (void*)0);
-#endif
+    /* None of these APIs can fail, as long as they are given a valid
+     * database pointer. */
+    assert(db != NULL);
+    int rc = sqlite3_trace_v2(db, SQLITE_TRACE_STMT, 0, 0);
+    assert(rc == SQLITE_OK), (void)rc;
+
     sqlite3_progress_handler(db, 0, 0, (void *)0);
-    (void)sqlite3_set_authorizer(db, NULL, NULL);
+
+    rc = sqlite3_set_authorizer(db, NULL, NULL);
+    assert(rc == SQLITE_OK), (void)rc;
 }
 
-static void
+static int
 connection_close(pysqlite_Connection *self)
 {
-    if (self->db) {
-        if (self->autocommit == AUTOCOMMIT_DISABLED &&
-            !sqlite3_get_autocommit(self->db))
-        {
-            /* If close is implicitly called as a result of interpreter
-             * tear-down, we must not call back into Python. */
-            if (_Py_IsFinalizing()) {
-                remove_callbacks(self->db);
-            }
-            (void)connection_exec_stmt(self, "ROLLBACK");
+    if (self->db == NULL) {
+        return 0;
+    }
+
+    int rc = 0;
+    if (self->autocommit == AUTOCOMMIT_DISABLED &&
+        !sqlite3_get_autocommit(self->db))
+    {
+        if (connection_exec_stmt(self, "ROLLBACK") < 0) {
+            rc = -1;
         }
+    }
 
-        free_callback_contexts(self);
+    sqlite3 *db = self->db;
+    self->db = NULL;
 
-        sqlite3 *db = self->db;
-        self->db = NULL;
+    Py_BEGIN_ALLOW_THREADS
+    /* The v2 close call always returns SQLITE_OK if given a valid database
+     * pointer (which we do), so we can safely ignore the return value */
+    (void)sqlite3_close_v2(db);
+    Py_END_ALLOW_THREADS
 
-        Py_BEGIN_ALLOW_THREADS
-        int rc = sqlite3_close_v2(db);
-        assert(rc == SQLITE_OK), (void)rc;
-        Py_END_ALLOW_THREADS
-    }
+    free_callback_contexts(self);
+    return rc;
 }
 
 static void
-connection_dealloc(pysqlite_Connection *self)
+connection_finalize(PyObject *self)
 {
-    PyTypeObject *tp = Py_TYPE(self);
-    PyObject_GC_UnTrack(self);
-    tp->tp_clear((PyObject *)self);
+    pysqlite_Connection *con = (pysqlite_Connection *)self;
+    PyObject *exc = PyErr_GetRaisedException();
+
+    /* If close is implicitly called as a result of interpreter
+     * tear-down, we must not call back into Python. */
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    int teardown = _Py_IsInterpreterFinalizing(interp);
+    if (teardown && con->db) {
+        remove_callbacks(con->db);
+    }
 
     /* Clean up if user has not called .close() explicitly. */
-    connection_close(self);
+    if (con->db) {
+        if (PyErr_ResourceWarning(self, 1, "unclosed database in %R", self)) {
+            /* Spurious errors can appear at shutdown */
+            if (PyErr_ExceptionMatches(PyExc_Warning)) {
+                PyErr_WriteUnraisable(self);
+            }
+        }
+    }
+    if (connection_close(con) < 0) {
+        if (teardown) {
+            PyErr_Clear();
+        }
+        else {
+            PyErr_WriteUnraisable((PyObject *)self);
+        }
+    }
 
+    PyErr_SetRaisedException(exc);
+}
+
+static void
+connection_dealloc(PyObject *self)
+{
+    if (PyObject_CallFinalizerFromDealloc(self) < 0) {
+        return;
+    }
+    PyTypeObject *tp = Py_TYPE(self);
+    PyObject_GC_UnTrack(self);
+    tp->tp_clear(self);
     tp->tp_free(self);
     Py_DECREF(tp);
 }
@@ -594,7 +666,9 @@ pysqlite_connection_close_impl(pysqlite_Connection *self)
 
     pysqlite_close_all_blobs(self);
     Py_CLEAR(self->statement_cache);
-    connection_close(self);
+    if (connection_close(self) < 0) {
+        return NULL;
+    }
 
     Py_RETURN_NONE;
 }
@@ -977,10 +1051,6 @@ final_callback(sqlite3_context *context)
 
 static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self)
 {
-    PyObject* new_list;
-    PyObject* weakref;
-    int i;
-
     /* we only need to do this once in a while */
     if (self->created_cursors++ < 200) {
         return;
@@ -988,18 +1058,19 @@ static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self)
 
     self->created_cursors = 0;
 
-    new_list = PyList_New(0);
+    PyObject* new_list = PyList_New(0);
     if (!new_list) {
         return;
     }
 
-    for (i = 0; i < PyList_Size(self->cursors); i++) {
-        weakref = PyList_GetItem(self->cursors, i);
-        if (PyWeakref_GetObject(weakref) != Py_None) {
-            if (PyList_Append(new_list, weakref) != 0) {
-                Py_DECREF(new_list);
-                return;
-            }
+    for (Py_ssize_t i = 0; i < PyList_Size(self->cursors); i++) {
+        PyObject* weakref = PyList_GetItem(self->cursors, i);
+        if (_PyWeakref_IS_DEAD(weakref)) {
+            continue;
+        }
+        if (PyList_Append(new_list, weakref) != 0) {
+            Py_DECREF(new_list);
+            return;
         }
     }
 
@@ -1065,6 +1136,7 @@ _sqlite3.Connection.create_function as pysqlite_connection_create_function
     name: str
     narg: int
     func: object
+    / [from 3.15]
     *
     deterministic: bool = False
 
@@ -1076,7 +1148,7 @@ pysqlite_connection_create_function_impl(pysqlite_Connection *self,
                                          PyTypeObject *cls, const char *name,
                                          int narg, PyObject *func,
                                          int deterministic)
-/*[clinic end generated code: output=8a811529287ad240 input=b3e8e1d8ddaffbef]*/
+/*[clinic end generated code: output=8a811529287ad240 input=c7c313b0ca8b519e]*/
 {
     int rc;
     int flags = SQLITE_UTF8;
@@ -1086,18 +1158,7 @@ pysqlite_connection_create_function_impl(pysqlite_Connection *self,
     }
 
     if (deterministic) {
-#if SQLITE_VERSION_NUMBER < 3008003
-        PyErr_SetString(self->NotSupportedError,
-                        "deterministic=True requires SQLite 3.8.3 or higher");
-        return NULL;
-#else
-        if (sqlite3_libversion_number() < 3008003) {
-            PyErr_SetString(self->NotSupportedError,
-                            "deterministic=True requires SQLite 3.8.3 or higher");
-            return NULL;
-        }
         flags |= SQLITE_DETERMINISTIC;
-#endif
     }
     callback_context *ctx = create_callback_context(cls, func);
     if (ctx == NULL) {
@@ -1278,6 +1339,7 @@ _sqlite3.Connection.create_aggregate as pysqlite_connection_create_aggregate
     name: str
     n_arg: int
     aggregate_class: object
+    / [from 3.15]
 
 Creates a new aggregate.
 [clinic start generated code]*/
@@ -1287,7 +1349,7 @@ pysqlite_connection_create_aggregate_impl(pysqlite_Connection *self,
                                           PyTypeObject *cls,
                                           const char *name, int n_arg,
                                           PyObject *aggregate_class)
-/*[clinic end generated code: output=1b02d0f0aec7ff96 input=68a2a26366d4c686]*/
+/*[clinic end generated code: output=1b02d0f0aec7ff96 input=8087056db6eae1cf]*/
 {
     int rc;
 
@@ -1333,7 +1395,7 @@ authorizer_callback(void *ctx, int action, const char *arg1,
     }
     else {
         if (PyLong_Check(ret)) {
-            rc = _PyLong_AsInt(ret);
+            rc = PyLong_AsInt(ret);
             if (rc == -1 && PyErr_Occurred()) {
                 print_or_clear_traceback(ctx);
                 rc = SQLITE_DENY;
@@ -1376,7 +1438,6 @@ progress_callback(void *ctx)
     return rc;
 }
 
-#ifdef HAVE_TRACE_V2
 /*
  * From https://sqlite.org/c3ref/trace_v2.html:
  * The integer return value from the callback is currently ignored, though this
@@ -1385,16 +1446,10 @@ progress_callback(void *ctx)
  */
 static int
 trace_callback(unsigned int type, void *ctx, void *stmt, void *sql)
-#else
-static void
-trace_callback(void *ctx, const char *sql)
-#endif
 {
-#ifdef HAVE_TRACE_V2
     if (type != SQLITE_TRACE_STMT) {
         return 0;
     }
-#endif
 
     PyGILState_STATE gilstate = PyGILState_Ensure();
 
@@ -1403,7 +1458,6 @@ trace_callback(void *ctx, const char *sql)
     assert(state != NULL);
 
     PyObject *py_statement = NULL;
-#ifdef HAVE_TRACE_V2
     const char *expanded_sql = sqlite3_expanded_sql((sqlite3_stmt *)stmt);
     if (expanded_sql == NULL) {
         sqlite3 *db = sqlite3_db_handle((sqlite3_stmt *)stmt);
@@ -1423,15 +1477,6 @@ trace_callback(void *ctx, const char *sql)
         py_statement = PyUnicode_FromString(expanded_sql);
         sqlite3_free((void *)expanded_sql);
     }
-#else
-    if (sql == NULL) {
-        PyErr_SetString(state->DataError,
-                "Expanded SQL string exceeds the maximum string length");
-        print_or_clear_traceback((callback_context *)ctx);
-        goto exit;
-    }
-    py_statement = PyUnicode_FromString(sql);
-#endif
     if (py_statement) {
         PyObject *callable = ((callback_context *)ctx)->callable;
         PyObject *ret = PyObject_CallOneArg(callable, py_statement);
@@ -1444,26 +1489,24 @@ trace_callback(void *ctx, const char *sql)
 
 exit:
     PyGILState_Release(gilstate);
-#ifdef HAVE_TRACE_V2
     return 0;
-#endif
 }
 
 /*[clinic input]
 _sqlite3.Connection.set_authorizer as pysqlite_connection_set_authorizer
 
     cls: defining_class
-    /
     authorizer_callback as callable: object
+    / [from 3.15]
 
-Sets authorizer callback.
+Set authorizer callback.
 [clinic start generated code]*/
 
 static PyObject *
 pysqlite_connection_set_authorizer_impl(pysqlite_Connection *self,
                                         PyTypeObject *cls,
                                         PyObject *callable)
-/*[clinic end generated code: output=75fa60114fc971c3 input=605d32ba92dd3eca]*/
+/*[clinic end generated code: output=75fa60114fc971c3 input=a52bd4937c588752]*/
 {
     if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
         return NULL;
@@ -1495,18 +1538,25 @@ pysqlite_connection_set_authorizer_impl(pysqlite_Connection *self,
 _sqlite3.Connection.set_progress_handler as pysqlite_connection_set_progress_handler
 
     cls: defining_class
-    /
     progress_handler as callable: object
+        A callable that takes no arguments.
+        If the callable returns non-zero, the current query is terminated,
+        and an exception is raised.
+    / [from 3.15]
     n: int
+        The number of SQLite virtual machine instructions that are
+        executed between invocations of 'progress_handler'.
+
+Set progress handler callback.
 
-Sets progress handler callback.
+If 'progress_handler' is None or 'n' is 0, the progress handler is disabled.
 [clinic start generated code]*/
 
 static PyObject *
 pysqlite_connection_set_progress_handler_impl(pysqlite_Connection *self,
                                               PyTypeObject *cls,
                                               PyObject *callable, int n)
-/*[clinic end generated code: output=0739957fd8034a50 input=f7c1837984bd86db]*/
+/*[clinic end generated code: output=0739957fd8034a50 input=b4d6e2ef8b4d32f9]*/
 {
     if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
         return NULL;
@@ -1532,17 +1582,17 @@ pysqlite_connection_set_progress_handler_impl(pysqlite_Connection *self,
 _sqlite3.Connection.set_trace_callback as pysqlite_connection_set_trace_callback
 
     cls: defining_class
-    /
     trace_callback as callable: object
+    / [from 3.15]
 
-Sets a trace callback called for each SQL statement (passed as unicode).
+Set a trace callback called for each SQL statement (passed as unicode).
 [clinic start generated code]*/
 
 static PyObject *
 pysqlite_connection_set_trace_callback_impl(pysqlite_Connection *self,
                                             PyTypeObject *cls,
                                             PyObject *callable)
-/*[clinic end generated code: output=d91048c03bfcee05 input=351a94210c5f81bb]*/
+/*[clinic end generated code: output=d91048c03bfcee05 input=d705d592ec03cf28]*/
 {
     if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
         return NULL;
@@ -1556,11 +1606,7 @@ pysqlite_connection_set_trace_callback_impl(pysqlite_Connection *self,
          * - https://sqlite.org/c3ref/c_trace.html
          * - https://sqlite.org/c3ref/trace_v2.html
          */
-#ifdef HAVE_TRACE_V2
         sqlite3_trace_v2(self->db, SQLITE_TRACE_STMT, 0, 0);
-#else
-        sqlite3_trace(self->db, 0, (void*)0);
-#endif
         set_callback_context(&self->trace_ctx, NULL);
     }
     else {
@@ -1568,11 +1614,7 @@ pysqlite_connection_set_trace_callback_impl(pysqlite_Connection *self,
         if (ctx == NULL) {
             return NULL;
         }
-#ifdef HAVE_TRACE_V2
         sqlite3_trace_v2(self->db, SQLITE_TRACE_STMT, trace_callback, ctx);
-#else
-        sqlite3_trace(self->db, trace_callback, ctx);
-#endif
         set_callback_context(&self->trace_ctx, ctx);
     }
 
@@ -1868,10 +1910,12 @@ collation_callback(void *context, int text1_length, const void *text1_data,
     }
 
     string1 = PyUnicode_FromStringAndSize((const char*)text1_data, text1_length);
+    if (string1 == NULL) {
+        goto finally;
+    }
     string2 = PyUnicode_FromStringAndSize((const char*)text2_data, text2_length);
-
-    if (!string1 || !string2) {
-        goto finally; /* failed to allocate strings */
+    if (string2 == NULL) {
+        goto finally;
     }
 
     callback_context *ctx = (callback_context *)context;
@@ -1998,15 +2042,6 @@ pysqlite_connection_backup_impl(pysqlite_Connection *self,
         return NULL;
     }
 
-#if SQLITE_VERSION_NUMBER < 3008008
-    /* Since 3.8.8 this is already done, per commit
-       https://www.sqlite.org/src/info/169b5505498c0a7e */
-    if (!sqlite3_get_autocommit(target->db)) {
-        PyErr_SetString(self->OperationalError, "target is in transaction");
-        return NULL;
-    }
-#endif
-
     if (progress != Py_None && !PyCallable_Check(progress)) {
         PyErr_SetString(PyExc_TypeError, "progress argument must be a callable");
         return NULL;
@@ -2369,12 +2404,8 @@ is_int_config(const int op)
     switch (op) {
         case SQLITE_DBCONFIG_ENABLE_FKEY:
         case SQLITE_DBCONFIG_ENABLE_TRIGGER:
-#if SQLITE_VERSION_NUMBER >= 3012002
         case SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER:
-#endif
-#if SQLITE_VERSION_NUMBER >= 3013000
         case SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION:
-#endif
 #if SQLITE_VERSION_NUMBER >= 3016000
         case SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE:
 #endif
@@ -2564,22 +2595,23 @@ static PyMethodDef connection_methods[] = {
 
 static struct PyMemberDef connection_members[] =
 {
-    {"Warning", T_OBJECT, offsetof(pysqlite_Connection, Warning), READONLY},
-    {"Error", T_OBJECT, offsetof(pysqlite_Connection, Error), READONLY},
-    {"InterfaceError", T_OBJECT, offsetof(pysqlite_Connection, InterfaceError), READONLY},
-    {"DatabaseError", T_OBJECT, offsetof(pysqlite_Connection, DatabaseError), READONLY},
-    {"DataError", T_OBJECT, offsetof(pysqlite_Connection, DataError), READONLY},
-    {"OperationalError", T_OBJECT, offsetof(pysqlite_Connection, OperationalError), READONLY},
-    {"IntegrityError", T_OBJECT, offsetof(pysqlite_Connection, IntegrityError), READONLY},
-    {"InternalError", T_OBJECT, offsetof(pysqlite_Connection, InternalError), READONLY},
-    {"ProgrammingError", T_OBJECT, offsetof(pysqlite_Connection, ProgrammingError), READONLY},
-    {"NotSupportedError", T_OBJECT, offsetof(pysqlite_Connection, NotSupportedError), READONLY},
-    {"row_factory", T_OBJECT, offsetof(pysqlite_Connection, row_factory)},
-    {"text_factory", T_OBJECT, offsetof(pysqlite_Connection, text_factory)},
+    {"Warning", _Py_T_OBJECT, offsetof(pysqlite_Connection, Warning), Py_READONLY},
+    {"Error", _Py_T_OBJECT, offsetof(pysqlite_Connection, Error), Py_READONLY},
+    {"InterfaceError", _Py_T_OBJECT, offsetof(pysqlite_Connection, InterfaceError), Py_READONLY},
+    {"DatabaseError", _Py_T_OBJECT, offsetof(pysqlite_Connection, DatabaseError), Py_READONLY},
+    {"DataError", _Py_T_OBJECT, offsetof(pysqlite_Connection, DataError), Py_READONLY},
+    {"OperationalError", _Py_T_OBJECT, offsetof(pysqlite_Connection, OperationalError), Py_READONLY},
+    {"IntegrityError", _Py_T_OBJECT, offsetof(pysqlite_Connection, IntegrityError), Py_READONLY},
+    {"InternalError", _Py_T_OBJECT, offsetof(pysqlite_Connection, InternalError), Py_READONLY},
+    {"ProgrammingError", _Py_T_OBJECT, offsetof(pysqlite_Connection, ProgrammingError), Py_READONLY},
+    {"NotSupportedError", _Py_T_OBJECT, offsetof(pysqlite_Connection, NotSupportedError), Py_READONLY},
+    {"row_factory", _Py_T_OBJECT, offsetof(pysqlite_Connection, row_factory)},
+    {"text_factory", _Py_T_OBJECT, offsetof(pysqlite_Connection, text_factory)},
     {NULL}
 };
 
 static PyType_Slot connection_slots[] = {
+    {Py_tp_finalize, connection_finalize},
     {Py_tp_dealloc, connection_dealloc},
     {Py_tp_doc, (void *)connection_doc},
     {Py_tp_methods, connection_methods},
diff --git a/Modules/_sqlite/connection.h b/Modules/_sqlite/connection.h
index 1df92065a587a2..7a748ee3ea0c58 100644
--- a/Modules/_sqlite/connection.h
+++ b/Modules/_sqlite/connection.h
@@ -23,7 +23,6 @@
 
 #ifndef PYSQLITE_CONNECTION_H
 #define PYSQLITE_CONNECTION_H
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pythread.h"
 #include "structmember.h"
diff --git a/Modules/_sqlite/cursor.c b/Modules/_sqlite/cursor.c
index caeedbddb8d88b..f95df612328e57 100644
--- a/Modules/_sqlite/cursor.c
+++ b/Modules/_sqlite/cursor.c
@@ -21,11 +21,17 @@
  * 3. This notice may not be removed or altered from any source distribution.
  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "cursor.h"
 #include "microprotocols.h"
 #include "module.h"
 #include "util.h"
 
+#include "pycore_pyerrors.h"      // _PyErr_FormatFromCause()
+
 typedef enum {
     TYPE_LONG,
     TYPE_FLOAT,
@@ -715,7 +721,6 @@ bind_parameters(pysqlite_state *state, pysqlite_Statement *self,
     } else if (PyDict_Check(parameters)) {
         /* parameters passed as dictionary */
         for (i = 1; i <= num_params_needed; i++) {
-            PyObject *binding_name_obj;
             Py_BEGIN_ALLOW_THREADS
             binding_name = sqlite3_bind_parameter_name(self->st, i);
             Py_END_ALLOW_THREADS
@@ -727,17 +732,8 @@ bind_parameters(pysqlite_state *state, pysqlite_Statement *self,
             }
 
             binding_name++; /* skip first char (the colon) */
-            binding_name_obj = PyUnicode_FromString(binding_name);
-            if (!binding_name_obj) {
-                return;
-            }
-            if (PyDict_CheckExact(parameters)) {
-                PyObject *item = PyDict_GetItemWithError(parameters, binding_name_obj);
-                current_param = Py_XNewRef(item);
-            } else {
-                current_param = PyObject_GetItem(parameters, binding_name_obj);
-            }
-            Py_DECREF(binding_name_obj);
+            PyObject *current_param;
+            (void)PyMapping_GetOptionalItemString(parameters, binding_name, &current_param);
             if (!current_param) {
                 if (!PyErr_Occurred() || PyErr_ExceptionMatches(PyExc_LookupError)) {
                     PyErr_Format(state->ProgrammingError,
@@ -1319,13 +1315,13 @@ static PyMethodDef cursor_methods[] = {
 
 static struct PyMemberDef cursor_members[] =
 {
-    {"connection", T_OBJECT, offsetof(pysqlite_Cursor, connection), READONLY},
-    {"description", T_OBJECT, offsetof(pysqlite_Cursor, description), READONLY},
-    {"arraysize", T_INT, offsetof(pysqlite_Cursor, arraysize), 0},
-    {"lastrowid", T_OBJECT, offsetof(pysqlite_Cursor, lastrowid), READONLY},
-    {"rowcount", T_LONG, offsetof(pysqlite_Cursor, rowcount), READONLY},
-    {"row_factory", T_OBJECT, offsetof(pysqlite_Cursor, row_factory), 0},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(pysqlite_Cursor, in_weakreflist), READONLY},
+    {"connection", _Py_T_OBJECT, offsetof(pysqlite_Cursor, connection), Py_READONLY},
+    {"description", _Py_T_OBJECT, offsetof(pysqlite_Cursor, description), Py_READONLY},
+    {"arraysize", Py_T_INT, offsetof(pysqlite_Cursor, arraysize), 0},
+    {"lastrowid", _Py_T_OBJECT, offsetof(pysqlite_Cursor, lastrowid), Py_READONLY},
+    {"rowcount", Py_T_LONG, offsetof(pysqlite_Cursor, rowcount), Py_READONLY},
+    {"row_factory", _Py_T_OBJECT, offsetof(pysqlite_Cursor, row_factory), 0},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(pysqlite_Cursor, in_weakreflist), Py_READONLY},
     {NULL}
 };
 
diff --git a/Modules/_sqlite/cursor.h b/Modules/_sqlite/cursor.h
index 0bcdddc3e29595..42f817af7c54ad 100644
--- a/Modules/_sqlite/cursor.h
+++ b/Modules/_sqlite/cursor.h
@@ -23,7 +23,6 @@
 
 #ifndef PYSQLITE_CURSOR_H
 #define PYSQLITE_CURSOR_H
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 #include "statement.h"
diff --git a/Modules/_sqlite/microprotocols.c b/Modules/_sqlite/microprotocols.c
index 148220d0f91f96..f77458d94a8573 100644
--- a/Modules/_sqlite/microprotocols.c
+++ b/Modules/_sqlite/microprotocols.c
@@ -85,20 +85,19 @@ pysqlite_microprotocols_adapt(pysqlite_state *state, PyObject *obj,
     if (!key) {
         return NULL;
     }
-    adapter = PyDict_GetItemWithError(state->psyco_adapters, key);
+    if (PyDict_GetItemRef(state->psyco_adapters, key, &adapter) < 0) {
+        Py_DECREF(key);
+        return NULL;
+    }
     Py_DECREF(key);
     if (adapter) {
-        Py_INCREF(adapter);
         adapted = PyObject_CallOneArg(adapter, obj);
         Py_DECREF(adapter);
         return adapted;
     }
-    if (PyErr_Occurred()) {
-        return NULL;
-    }
 
     /* try to have the protocol adapt this object */
-    if (_PyObject_LookupAttr(proto, state->str___adapt__, &adapter) < 0) {
+    if (PyObject_GetOptionalAttr(proto, state->str___adapt__, &adapter) < 0) {
         return NULL;
     }
     if (adapter) {
@@ -117,7 +116,7 @@ pysqlite_microprotocols_adapt(pysqlite_state *state, PyObject *obj,
     }
 
     /* and finally try to have the object adapt itself */
-    if (_PyObject_LookupAttr(obj, state->str___conform__, &adapter) < 0) {
+    if (PyObject_GetOptionalAttr(obj, state->str___conform__, &adapter) < 0) {
         return NULL;
     }
     if (adapter) {
diff --git a/Modules/_sqlite/microprotocols.h b/Modules/_sqlite/microprotocols.h
index 6bde9d01f45299..8a8c33525ee53b 100644
--- a/Modules/_sqlite/microprotocols.h
+++ b/Modules/_sqlite/microprotocols.h
@@ -26,7 +26,6 @@
 #ifndef PSYCOPG_MICROPROTOCOLS_H
 #define PSYCOPG_MICROPROTOCOLS_H 1
 
-#define PY_SSIZE_T_CLEAN
 #include <Python.h>
 
 /** exported functions **/
diff --git a/Modules/_sqlite/module.c b/Modules/_sqlite/module.c
index 27bd42f4595e1c..46fed9f13281f3 100644
--- a/Modules/_sqlite/module.c
+++ b/Modules/_sqlite/module.c
@@ -21,6 +21,10 @@
  * 3. This notice may not be removed or altered from any source distribution.
  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "connection.h"
 #include "statement.h"
 #include "cursor.h"
@@ -29,8 +33,10 @@
 #include "row.h"
 #include "blob.h"
 
-#if SQLITE_VERSION_NUMBER < 3007015
-#error "SQLite 3.7.15 or higher required"
+#include "pycore_import.h"        // _PyImport_GetModuleAttrString()
+
+#if SQLITE_VERSION_NUMBER < 3015002
+#error "SQLite 3.15.2 or higher required"
 #endif
 
 #define clinic_state() (pysqlite_get_state(module))
@@ -42,31 +48,33 @@ module _sqlite3
 [clinic start generated code]*/
 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=81e330492d57488e]*/
 
-// NB: This needs to be in sync with the Connection.__init__ docstring.
-PyDoc_STRVAR(module_connect_doc,
-"connect($module, /, database, timeout=5.0, detect_types=0,\n"
-"        isolation_level='', check_same_thread=True,\n"
-"        factory=ConnectionType, cached_statements=128, uri=False, *,\n"
-"        autocommit=sqlite3.LEGACY_TRANSACTION_CONTROL)\n"
-"--\n"
-"\n"
-"Opens a connection to the SQLite database file database.\n"
-"\n"
-"You can use \":memory:\" to open a database connection to a database that resides\n"
-"in RAM instead of on disk.");
-
-#define PYSQLITE_CONNECT_METHODDEF    \
-    {"connect", _PyCFunction_CAST(module_connect), METH_FASTCALL|METH_KEYWORDS, module_connect_doc},
+/*
+ * We create 'clinic/_sqlite3.connect.c.h' in connection.c, in order to
+ * keep the signatures of sqlite3.Connection.__init__ and
+ * sqlite3.connect() synchronised.
+ */
+#include "clinic/_sqlite3.connect.c.h"
 
 static PyObject *
-module_connect(PyObject *module, PyObject *const *args, Py_ssize_t nargsf,
-               PyObject *kwnames)
+pysqlite_connect(PyObject *module, PyObject *const *args, Py_ssize_t nargsf,
+                 PyObject *kwnames)
 {
     pysqlite_state *state = pysqlite_get_state(module);
     PyObject *factory = (PyObject *)state->ConnectionType;
 
     static const int FACTORY_POS = 5;
     Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+    if (nargs > 1 && nargs <= 8) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 1 positional argument to sqlite3.connect()"
+                " is deprecated. Parameters 'timeout', 'detect_types', "
+                "'isolation_level', 'check_same_thread', 'factory', "
+                "'cached_statements' and 'uri' will become keyword-only "
+                "parameters in Python 3.15.", 1))
+        {
+                return NULL;
+        }
+    }
     if (nargs > FACTORY_POS) {
         factory = args[FACTORY_POS];
     }
@@ -236,7 +244,7 @@ load_functools_lru_cache(PyObject *module)
 static PyMethodDef module_methods[] = {
     PYSQLITE_ADAPT_METHODDEF
     PYSQLITE_COMPLETE_STATEMENT_METHODDEF
-    PYSQLITE_CONNECT_METHODDEF
+    {"connect", _PyCFunction_CAST(pysqlite_connect), METH_FASTCALL|METH_KEYWORDS, pysqlite_connect__doc__},
     PYSQLITE_ENABLE_CALLBACK_TRACE_METHODDEF
     PYSQLITE_REGISTER_ADAPTER_METHODDEF
     PYSQLITE_REGISTER_CONVERTER_METHODDEF
@@ -245,12 +253,6 @@ static PyMethodDef module_methods[] = {
 
 /* SQLite C API result codes. See also:
  * - https://www.sqlite.org/c3ref/c_abort_rollback.html
- * - https://sqlite.org/changes.html#version_3_3_8
- * - https://sqlite.org/changes.html#version_3_7_16
- * - https://sqlite.org/changes.html#version_3_7_17
- * - https://sqlite.org/changes.html#version_3_8_0
- * - https://sqlite.org/changes.html#version_3_8_3
- * - https://sqlite.org/changes.html#version_3_14
  *
  * Note: the SQLite changelogs rarely mention new result codes, so in order to
  * keep the 'error_codes' table in sync with SQLite, we must manually inspect
@@ -294,10 +296,8 @@ static const struct {
     DECLARE_ERROR_CODE(SQLITE_ROW),
     DECLARE_ERROR_CODE(SQLITE_SCHEMA),
     DECLARE_ERROR_CODE(SQLITE_TOOBIG),
-#if SQLITE_VERSION_NUMBER >= 3007017
     DECLARE_ERROR_CODE(SQLITE_NOTICE),
     DECLARE_ERROR_CODE(SQLITE_WARNING),
-#endif
     // Extended result code list
     DECLARE_ERROR_CODE(SQLITE_ABORT_ROLLBACK),
     DECLARE_ERROR_CODE(SQLITE_BUSY_RECOVERY),
@@ -331,7 +331,6 @@ static const struct {
     DECLARE_ERROR_CODE(SQLITE_LOCKED_SHAREDCACHE),
     DECLARE_ERROR_CODE(SQLITE_READONLY_CANTLOCK),
     DECLARE_ERROR_CODE(SQLITE_READONLY_RECOVERY),
-#if SQLITE_VERSION_NUMBER >= 3007016
     DECLARE_ERROR_CODE(SQLITE_CONSTRAINT_CHECK),
     DECLARE_ERROR_CODE(SQLITE_CONSTRAINT_COMMITHOOK),
     DECLARE_ERROR_CODE(SQLITE_CONSTRAINT_FOREIGNKEY),
@@ -342,39 +341,20 @@ static const struct {
     DECLARE_ERROR_CODE(SQLITE_CONSTRAINT_UNIQUE),
     DECLARE_ERROR_CODE(SQLITE_CONSTRAINT_VTAB),
     DECLARE_ERROR_CODE(SQLITE_READONLY_ROLLBACK),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3007017
     DECLARE_ERROR_CODE(SQLITE_IOERR_MMAP),
     DECLARE_ERROR_CODE(SQLITE_NOTICE_RECOVER_ROLLBACK),
     DECLARE_ERROR_CODE(SQLITE_NOTICE_RECOVER_WAL),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3008000
     DECLARE_ERROR_CODE(SQLITE_BUSY_SNAPSHOT),
     DECLARE_ERROR_CODE(SQLITE_IOERR_GETTEMPPATH),
     DECLARE_ERROR_CODE(SQLITE_WARNING_AUTOINDEX),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3008001
     DECLARE_ERROR_CODE(SQLITE_CANTOPEN_CONVPATH),
     DECLARE_ERROR_CODE(SQLITE_IOERR_CONVPATH),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3008002
     DECLARE_ERROR_CODE(SQLITE_CONSTRAINT_ROWID),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3008003
     DECLARE_ERROR_CODE(SQLITE_READONLY_DBMOVED),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3008007
     DECLARE_ERROR_CODE(SQLITE_AUTH_USER),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3009000
     DECLARE_ERROR_CODE(SQLITE_IOERR_VNODE),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3010000
     DECLARE_ERROR_CODE(SQLITE_IOERR_AUTH),
-#endif
-#if SQLITE_VERSION_NUMBER >= 3014001
     DECLARE_ERROR_CODE(SQLITE_OK_LOAD_PERMANENTLY),
-#endif
 #if SQLITE_VERSION_NUMBER >= 3021000
     DECLARE_ERROR_CODE(SQLITE_IOERR_BEGIN_ATOMIC),
     DECLARE_ERROR_CODE(SQLITE_IOERR_COMMIT_ATOMIC),
@@ -481,9 +461,7 @@ add_integer_constants(PyObject *module) {
     ADD_INT(SQLITE_DROP_VTABLE);
     ADD_INT(SQLITE_FUNCTION);
     ADD_INT(SQLITE_SAVEPOINT);
-#if SQLITE_VERSION_NUMBER >= 3008003
     ADD_INT(SQLITE_RECURSIVE);
-#endif
     // Run-time limit categories
     ADD_INT(SQLITE_LIMIT_LENGTH);
     ADD_INT(SQLITE_LIMIT_SQL_LENGTH);
@@ -496,9 +474,7 @@ add_integer_constants(PyObject *module) {
     ADD_INT(SQLITE_LIMIT_LIKE_PATTERN_LENGTH);
     ADD_INT(SQLITE_LIMIT_VARIABLE_NUMBER);
     ADD_INT(SQLITE_LIMIT_TRIGGER_DEPTH);
-#if SQLITE_VERSION_NUMBER >= 3008007
     ADD_INT(SQLITE_LIMIT_WORKER_THREADS);
-#endif
 
     /*
      * Database connection configuration options.
@@ -506,12 +482,8 @@ add_integer_constants(PyObject *module) {
      */
     ADD_INT(SQLITE_DBCONFIG_ENABLE_FKEY);
     ADD_INT(SQLITE_DBCONFIG_ENABLE_TRIGGER);
-#if SQLITE_VERSION_NUMBER >= 3012002
     ADD_INT(SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER);
-#endif
-#if SQLITE_VERSION_NUMBER >= 3013000
     ADD_INT(SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION);
-#endif
 #if SQLITE_VERSION_NUMBER >= 3016000
     ADD_INT(SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE);
 #endif
@@ -678,8 +650,8 @@ do {                                                     \
 static int
 module_exec(PyObject *module)
 {
-    if (sqlite3_libversion_number() < 3007015) {
-        PyErr_SetString(PyExc_ImportError, MODULE_NAME ": SQLite 3.7.15 or higher required");
+    if (sqlite3_libversion_number() < 3015002) {
+        PyErr_SetString(PyExc_ImportError, MODULE_NAME ": SQLite 3.15.2 or higher required");
         return -1;
     }
 
diff --git a/Modules/_sqlite/module.h b/Modules/_sqlite/module.h
index daa22091d38ad7..a4ca45cf6326a9 100644
--- a/Modules/_sqlite/module.h
+++ b/Modules/_sqlite/module.h
@@ -23,7 +23,6 @@
 
 #ifndef PYSQLITE_MODULE_H
 #define PYSQLITE_MODULE_H
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 #define LEGACY_TRANSACTION_CONTROL -1
diff --git a/Modules/_sqlite/row.c b/Modules/_sqlite/row.c
index 1a1943285ce008..14555076a7e79a 100644
--- a/Modules/_sqlite/row.c
+++ b/Modules/_sqlite/row.c
@@ -21,6 +21,10 @@
  * 3. This notice may not be removed or altered from any source distribution.
  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "row.h"
 #include "cursor.h"
 
diff --git a/Modules/_sqlite/row.h b/Modules/_sqlite/row.h
index b51909817584ba..d42b781e493177 100644
--- a/Modules/_sqlite/row.h
+++ b/Modules/_sqlite/row.h
@@ -23,7 +23,6 @@
 
 #ifndef PYSQLITE_ROW_H
 #define PYSQLITE_ROW_H
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 typedef struct _Row
diff --git a/Modules/_sqlite/statement.h b/Modules/_sqlite/statement.h
index 11a6464b1a1c2b..b18f170ebb0708 100644
--- a/Modules/_sqlite/statement.h
+++ b/Modules/_sqlite/statement.h
@@ -23,7 +23,6 @@
 
 #ifndef PYSQLITE_STATEMENT_H
 #define PYSQLITE_STATEMENT_H
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 #include "connection.h"
diff --git a/Modules/_sqlite/util.c b/Modules/_sqlite/util.c
index 2b3bbfefa3cf5f..833a666301d8ff 100644
--- a/Modules/_sqlite/util.c
+++ b/Modules/_sqlite/util.c
@@ -21,7 +21,12 @@
  * 3. This notice may not be removed or altered from any source distribution.
  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "module.h"
+#include "pycore_long.h"          // _PyLong_AsByteArray()
 #include "connection.h"
 
 // Returns non-NULL if a new exception should be raised
diff --git a/Modules/_sqlite/util.h b/Modules/_sqlite/util.h
index a22bcd82d2a05b..68b1a8cb67ace3 100644
--- a/Modules/_sqlite/util.h
+++ b/Modules/_sqlite/util.h
@@ -23,7 +23,6 @@
 
 #ifndef PYSQLITE_UTIL_H
 #define PYSQLITE_UTIL_H
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pythread.h"
 #include "sqlite3.h"
diff --git a/Modules/_sre/clinic/sre.c.h b/Modules/_sre/clinic/sre.c.h
index da641081ce9e3c..cd3fbbc720bdf1 100644
--- a/Modules/_sre/clinic/sre.c.h
+++ b/Modules/_sre/clinic/sre.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_sre_getcodesize__doc__,
 "getcodesize($module, /)\n"
@@ -53,7 +54,7 @@ _sre_ascii_iscased(PyObject *module, PyObject *arg)
     int character;
     int _return_value;
 
-    character = _PyLong_AsInt(arg);
+    character = PyLong_AsInt(arg);
     if (character == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -85,7 +86,7 @@ _sre_unicode_iscased(PyObject *module, PyObject *arg)
     int character;
     int _return_value;
 
-    character = _PyLong_AsInt(arg);
+    character = PyLong_AsInt(arg);
     if (character == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -117,7 +118,7 @@ _sre_ascii_tolower(PyObject *module, PyObject *arg)
     int character;
     int _return_value;
 
-    character = _PyLong_AsInt(arg);
+    character = PyLong_AsInt(arg);
     if (character == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -149,7 +150,7 @@ _sre_unicode_tolower(PyObject *module, PyObject *arg)
     int character;
     int _return_value;
 
-    character = _PyLong_AsInt(arg);
+    character = PyLong_AsInt(arg);
     if (character == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1031,7 +1032,7 @@ _sre_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         goto exit;
     }
     pattern = args[0];
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1460,4 +1461,4 @@ _sre_SRE_Scanner_search(ScannerObject *self, PyTypeObject *cls, PyObject *const
     }
     return _sre_SRE_Scanner_search_impl(self, cls);
 }
-/*[clinic end generated code: output=e3ba72156dd71572 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ad513f31b99505fa input=a9049054013a1b77]*/
diff --git a/Modules/_sre/sre.c b/Modules/_sre/sre.c
index f8a1a05a318889..d451974b9cf81e 100644
--- a/Modules/_sre/sre.c
+++ b/Modules/_sre/sre.c
@@ -38,21 +38,54 @@
 static const char copyright[] =
     " SRE 2.2.2 Copyright (c) 1997-2002 by Secret Labs AB ";
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
+#include "pycore_dict.h"          // _PyDict_Next()
 #include "pycore_long.h"          // _PyLong_GetZero()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "structmember.h"         // PyMemberDef
 
-#include "sre.h"
+#include "sre.h"                  // SRE_CODE
+
+#include <ctype.h>                // tolower(), toupper(), isalnum()
 
 #define SRE_CODE_BITS (8 * sizeof(SRE_CODE))
 
-#include <ctype.h>
+// On macOS, use the wide character ctype API using btowc()
+#if defined(__APPLE__)
+#  define USE_CTYPE_WINT_T
+#endif
+
+static int sre_isalnum(unsigned int ch) {
+#ifdef USE_CTYPE_WINT_T
+    return (unsigned int)iswalnum(btowc((int)ch));
+#else
+    return (unsigned int)isalnum((int)ch);
+#endif
+}
+
+static unsigned int sre_tolower(unsigned int ch) {
+#ifdef USE_CTYPE_WINT_T
+    return (unsigned int)towlower(btowc((int)ch));
+#else
+    return (unsigned int)tolower((int)ch);
+#endif
+}
+
+static unsigned int sre_toupper(unsigned int ch) {
+#ifdef USE_CTYPE_WINT_T
+    return (unsigned int)towupper(btowc((int)ch));
+#else
+    return (unsigned int)toupper((int)ch);
+#endif
+}
 
-/* defining this one enables tracing */
-#undef VERBOSE
+/* Defining this one controls tracing:
+ * 0 -- disabled
+ * 1 -- only if the DEBUG flag set
+ * 2 -- always
+ */
+#ifndef VERBOSE
+#  define VERBOSE 0
+#endif
 
 /* -------------------------------------------------------------------- */
 
@@ -72,10 +105,24 @@ static const char copyright[] =
 #define SRE_ERROR_MEMORY -9 /* out of memory */
 #define SRE_ERROR_INTERRUPTED -10 /* signal handler raised exception */
 
-#if defined(VERBOSE)
-#define TRACE(v) printf v
+#if VERBOSE == 0
+#  define INIT_TRACE(state)
+#  define DO_TRACE 0
+#  define TRACE(v)
+#elif VERBOSE == 1
+#  define INIT_TRACE(state) int _debug = (state)->debug
+#  define DO_TRACE (_debug)
+#  define TRACE(v) do {     \
+        if (_debug) { \
+            printf v;       \
+        }                   \
+    } while (0)
+#elif VERBOSE == 2
+#  define INIT_TRACE(state)
+#  define DO_TRACE 1
+#  define TRACE(v) printf v
 #else
-#define TRACE(v)
+#  error VERBOSE must be 0, 1 or 2
 #endif
 
 /* -------------------------------------------------------------------- */
@@ -98,17 +145,17 @@ static unsigned int sre_lower_ascii(unsigned int ch)
 /* locale-specific character predicates */
 /* !(c & ~N) == (c < N+1) for any unsigned c, this avoids
  * warnings when c's type supports only numbers < N+1 */
-#define SRE_LOC_IS_ALNUM(ch) (!((ch) & ~255) ? isalnum((ch)) : 0)
+#define SRE_LOC_IS_ALNUM(ch) (!((ch) & ~255) ? sre_isalnum((ch)) : 0)
 #define SRE_LOC_IS_WORD(ch) (SRE_LOC_IS_ALNUM((ch)) || (ch) == '_')
 
 static unsigned int sre_lower_locale(unsigned int ch)
 {
-    return ((ch) < 256 ? (unsigned int)tolower((ch)) : ch);
+    return ((ch) < 256 ? (unsigned int)sre_tolower((ch)) : ch);
 }
 
 static unsigned int sre_upper_locale(unsigned int ch)
 {
-    return ((ch) < 256 ? (unsigned int)toupper((ch)) : ch);
+    return ((ch) < 256 ? (unsigned int)sre_toupper((ch)) : ch);
 }
 
 /* unicode-specific character predicates */
@@ -200,6 +247,7 @@ data_stack_dealloc(SRE_STATE* state)
 static int
 data_stack_grow(SRE_STATE* state, Py_ssize_t size)
 {
+    INIT_TRACE(state);
     Py_ssize_t minsize, cursize;
     minsize = state->data_stack_base+size;
     cursize = state->data_stack_size;
@@ -374,8 +422,6 @@ getstring(PyObject* string, Py_ssize_t* p_length,
     /* Unicode objects do not support the buffer API. So, get the data
        directly instead. */
     if (PyUnicode_Check(string)) {
-        if (PyUnicode_READY(string) == -1)
-            return NULL;
         *p_length = PyUnicode_GET_LENGTH(string);
         *p_charsize = PyUnicode_KIND(string);
         *p_isbytes = 0;
@@ -453,6 +499,7 @@ state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string,
     state->charsize = charsize;
     state->match_all = 0;
     state->must_advance = 0;
+    state->debug = ((pattern->flags & SRE_FLAG_DEBUG) != 0);
 
     state->beginning = ptr;
 
@@ -645,6 +692,7 @@ _sre_SRE_Pattern_match_impl(PatternObject *self, PyTypeObject *cls,
     if (!state_init(&state, (PatternObject *)self, string, pos, endpos))
         return NULL;
 
+    INIT_TRACE(&state);
     state.ptr = state.start;
 
     TRACE(("|%p|%p|MATCH\n", PatternObject_GetCode(self), state.ptr));
@@ -688,6 +736,7 @@ _sre_SRE_Pattern_fullmatch_impl(PatternObject *self, PyTypeObject *cls,
     if (!state_init(&state, self, string, pos, endpos))
         return NULL;
 
+    INIT_TRACE(&state);
     state.ptr = state.start;
 
     TRACE(("|%p|%p|FULLMATCH\n", PatternObject_GetCode(self), state.ptr));
@@ -734,6 +783,7 @@ _sre_SRE_Pattern_search_impl(PatternObject *self, PyTypeObject *cls,
     if (!state_init(&state, self, string, pos, endpos))
         return NULL;
 
+    INIT_TRACE(&state);
     TRACE(("|%p|%p|SEARCH\n", PatternObject_GetCode(self), state.ptr));
 
     status = sre_search(&state, PatternObject_GetCode(self));
@@ -1337,7 +1387,6 @@ pattern_repr(PatternObject *obj)
         const char *name;
         int value;
     } flag_names[] = {
-        {"re.TEMPLATE", SRE_FLAG_TEMPLATE},
         {"re.IGNORECASE", SRE_FLAG_IGNORECASE},
         {"re.LOCALE", SRE_FLAG_LOCALE},
         {"re.MULTILINE", SRE_FLAG_MULTILINE},
@@ -1462,6 +1511,9 @@ _sre_compile_impl(PyObject *module, PyObject *pattern, int flags,
     for (i = 0; i < n; i++) {
         PyObject *o = PyList_GET_ITEM(code, i);
         unsigned long value = PyLong_AsUnsignedLong(o);
+        if (value == (unsigned long)-1 && PyErr_Occurred()) {
+            break;
+        }
         self->code[i] = (SRE_CODE) value;
         if ((unsigned long) self->code[i] != value) {
             PyErr_SetString(PyExc_OverflowError,
@@ -1549,10 +1601,12 @@ _sre_template_impl(PyObject *module, PyObject *pattern, PyObject *template)
     for (Py_ssize_t i = 0; i < n; i++) {
         Py_ssize_t index = PyLong_AsSsize_t(PyList_GET_ITEM(template, 2*i+1));
         if (index == -1 && PyErr_Occurred()) {
+            Py_SET_SIZE(self, i);
             Py_DECREF(self);
             return NULL;
         }
         if (index < 0) {
+            Py_SET_SIZE(self, i);
             goto bad_template;
         }
         self->items[i].index = index;
@@ -2019,8 +2073,6 @@ _validate_inner(SRE_CODE *code, SRE_CODE *end, Py_ssize_t groups)
             GET_SKIP;
             GET_ARG; /* 0 for lookahead, width for lookbehind */
             code--; /* Back up over arg to simplify math below */
-            if (arg & 0x80000000)
-                FAIL; /* Width too large */
             /* Stop 1 before the end; we check the SUCCESS below */
             if (_validate_inner(code+1, code+skip-2, groups))
                 FAIL;
@@ -2975,13 +3027,13 @@ static PyGetSetDef pattern_getset[] = {
 
 #define PAT_OFF(x) offsetof(PatternObject, x)
 static PyMemberDef pattern_members[] = {
-    {"pattern",    T_OBJECT,    PAT_OFF(pattern),       READONLY,
+    {"pattern",    _Py_T_OBJECT,    PAT_OFF(pattern),       Py_READONLY,
      "The pattern string from which the RE object was compiled."},
-    {"flags",      T_INT,       PAT_OFF(flags),         READONLY,
+    {"flags",      Py_T_INT,       PAT_OFF(flags),         Py_READONLY,
      "The regex matching flags."},
-    {"groups",     T_PYSSIZET,  PAT_OFF(groups),        READONLY,
+    {"groups",     Py_T_PYSSIZET,  PAT_OFF(groups),        Py_READONLY,
      "The number of capturing groups in the pattern."},
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(PatternObject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(PatternObject, weakreflist), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -3034,13 +3086,13 @@ static PyGetSetDef match_getset[] = {
 
 #define MATCH_OFF(x) offsetof(MatchObject, x)
 static PyMemberDef match_members[] = {
-    {"string",  T_OBJECT,   MATCH_OFF(string),  READONLY,
+    {"string",  _Py_T_OBJECT,   MATCH_OFF(string),  Py_READONLY,
      "The string passed to match() or search()."},
-    {"re",      T_OBJECT,   MATCH_OFF(pattern), READONLY,
+    {"re",      _Py_T_OBJECT,   MATCH_OFF(pattern), Py_READONLY,
      "The regular expression object."},
-    {"pos",     T_PYSSIZET, MATCH_OFF(pos),     READONLY,
+    {"pos",     Py_T_PYSSIZET, MATCH_OFF(pos),     Py_READONLY,
      "The index into the string at which the RE engine started looking for a match."},
-    {"endpos",  T_PYSSIZET, MATCH_OFF(endpos),  READONLY,
+    {"endpos",  Py_T_PYSSIZET, MATCH_OFF(endpos),  Py_READONLY,
      "The index into the string beyond which the RE engine will not go."},
     {NULL}
 };
@@ -3084,7 +3136,7 @@ static PyMethodDef scanner_methods[] = {
 
 #define SCAN_OFF(x) offsetof(ScannerObject, x)
 static PyMemberDef scanner_members[] = {
-    {"pattern", T_OBJECT, SCAN_OFF(pattern), READONLY},
+    {"pattern", _Py_T_OBJECT, SCAN_OFF(pattern), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -3176,12 +3228,7 @@ do {                                                                \
 
 #define ADD_ULONG_CONSTANT(module, name, value)           \
     do {                                                  \
-        PyObject *o = PyLong_FromUnsignedLong(value);     \
-        if (!o)                                           \
-            goto error;                                   \
-        int res = PyModule_AddObjectRef(module, name, o); \
-        Py_DECREF(o);                                     \
-        if (res < 0) {                                    \
+        if (PyModule_Add(module, name, PyLong_FromUnsignedLong(value)) < 0) { \
             goto error;                                   \
         }                                                 \
 } while (0)
diff --git a/Modules/_sre/sre.h b/Modules/_sre/sre.h
index d967d9ea04ba7a..83d89d57b11199 100644
--- a/Modules/_sre/sre.h
+++ b/Modules/_sre/sre.h
@@ -84,6 +84,7 @@ typedef struct {
     int charsize; /* character size */
     int match_all;
     int must_advance;
+    int debug;
     /* marks */
     int lastmark;
     int lastindex;
@@ -94,6 +95,7 @@ typedef struct {
     size_t data_stack_base;
     /* current repeat context */
     SRE_REPEAT *repeat;
+    unsigned int sigcount;
 } SRE_STATE;
 
 typedef struct {
diff --git a/Modules/_sre/sre_constants.h b/Modules/_sre/sre_constants.h
index b5692292f65280..bd611b33614509 100644
--- a/Modules/_sre/sre_constants.h
+++ b/Modules/_sre/sre_constants.h
@@ -11,7 +11,7 @@
  * See the sre.c file for information on usage and redistribution.
  */
 
-#define SRE_MAGIC 20221023
+#define SRE_MAGIC 20230612
 #define SRE_OP_FAILURE 0
 #define SRE_OP_SUCCESS 1
 #define SRE_OP_ANY 2
@@ -85,7 +85,6 @@
 #define SRE_CATEGORY_UNI_NOT_WORD 15
 #define SRE_CATEGORY_UNI_LINEBREAK 16
 #define SRE_CATEGORY_UNI_NOT_LINEBREAK 17
-#define SRE_FLAG_TEMPLATE 1
 #define SRE_FLAG_IGNORECASE 2
 #define SRE_FLAG_LOCALE 4
 #define SRE_FLAG_MULTILINE 8
diff --git a/Modules/_sre/sre_lib.h b/Modules/_sre/sre_lib.h
index fb4c18b63d643d..f5497d9ff2b93f 100644
--- a/Modules/_sre/sre_lib.h
+++ b/Modules/_sre/sre_lib.h
@@ -209,6 +209,7 @@ SRE(count)(SRE_STATE* state, const SRE_CODE* pattern, Py_ssize_t maxcount)
     const SRE_CHAR* ptr = (const SRE_CHAR *)state->ptr;
     const SRE_CHAR* end = (const SRE_CHAR *)state->end;
     Py_ssize_t i;
+    INIT_TRACE(state);
 
     /* adjust end */
     if (maxcount < end - ptr && maxcount != SRE_MAXREPEAT)
@@ -372,6 +373,19 @@ SRE(count)(SRE_STATE* state, const SRE_CODE* pattern, Py_ssize_t maxcount)
         state->lastindex = ctx->lastindex; \
     } while (0)
 
+#define LAST_PTR_PUSH()     \
+    do { \
+        TRACE(("push last_ptr: %zd", \
+                PTR_TO_INDEX(ctx->u.rep->last_ptr))); \
+        DATA_PUSH(&ctx->u.rep->last_ptr); \
+    } while (0)
+#define LAST_PTR_POP()  \
+    do { \
+        DATA_POP(&ctx->u.rep->last_ptr); \
+        TRACE(("pop last_ptr: %zd", \
+                PTR_TO_INDEX(ctx->u.rep->last_ptr))); \
+    } while (0)
+
 #define RETURN_ERROR(i) do { return i; } while(0)
 #define RETURN_FAILURE do { ret = 0; goto exit; } while(0)
 #define RETURN_SUCCESS do { ret = 1; goto exit; } while(0)
@@ -448,8 +462,27 @@ do { \
 #define DATA_LOOKUP_AT(t,p,pos) \
     DATA_STACK_LOOKUP_AT(state,t,p,pos)
 
+#define PTR_TO_INDEX(ptr) \
+    ((ptr) ? ((char*)(ptr) - (char*)state->beginning) / state->charsize : -1)
+
+#if VERBOSE
+#  define MARK_TRACE(label, lastmark) \
+    do if (DO_TRACE) { \
+        TRACE(("%s %d marks:", (label), (lastmark)+1)); \
+        for (int j = 0; j <= (lastmark); j++) { \
+            if (j && (j & 1) == 0) { \
+                TRACE((" ")); \
+            } \
+            TRACE((" %zd", PTR_TO_INDEX(state->mark[j]))); \
+        } \
+        TRACE(("\n")); \
+    } while (0)
+#else
+#  define MARK_TRACE(label, lastmark)
+#endif
 #define MARK_PUSH(lastmark) \
     do if (lastmark >= 0) { \
+        MARK_TRACE("push", (lastmark)); \
         size_t _marks_size = (lastmark+1) * sizeof(void*); \
         DATA_STACK_PUSH(state, state->mark, _marks_size); \
     } while (0)
@@ -457,16 +490,19 @@ do { \
     do if (lastmark >= 0) { \
         size_t _marks_size = (lastmark+1) * sizeof(void*); \
         DATA_STACK_POP(state, state->mark, _marks_size, 1); \
+        MARK_TRACE("pop", (lastmark)); \
     } while (0)
 #define MARK_POP_KEEP(lastmark) \
     do if (lastmark >= 0) { \
         size_t _marks_size = (lastmark+1) * sizeof(void*); \
         DATA_STACK_POP(state, state->mark, _marks_size, 0); \
+        MARK_TRACE("pop keep", (lastmark)); \
     } while (0)
 #define MARK_POP_DISCARD(lastmark) \
     do if (lastmark >= 0) { \
         size_t _marks_size = (lastmark+1) * sizeof(void*); \
         DATA_STACK_POP_DISCARD(state, _marks_size); \
+        MARK_TRACE("pop discard", (lastmark)); \
     } while (0)
 
 #define JUMP_NONE            0
@@ -563,10 +599,11 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
     Py_ssize_t alloc_pos, ctx_pos = -1;
     Py_ssize_t ret = 0;
     int jump;
-    unsigned int sigcount=0;
+    unsigned int sigcount = state->sigcount;
 
     SRE(match_context)* ctx;
     SRE(match_context)* nextctx;
+    INIT_TRACE(state);
 
     TRACE(("|%p|%p|ENTER\n", pattern, state->ptr));
 
@@ -589,8 +626,8 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
         /* optimization info block */
         /* <INFO> <1=skip> <2=flags> <3=min> ... */
         if (pattern[3] && (uintptr_t)(end - ptr) < pattern[3]) {
-            TRACE(("reject (got %zd chars, need %zd)\n",
-                   end - ptr, (Py_ssize_t) pattern[3]));
+            TRACE(("reject (got %tu chars, need %zu)\n",
+                   end - ptr, (size_t) pattern[3]));
             RETURN_FAILURE;
         }
         pattern += pattern[1] + 1;
@@ -1148,11 +1185,11 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
                 LASTMARK_SAVE();
                 MARK_PUSH(ctx->lastmark);
                 /* zero-width match protection */
-                DATA_PUSH(&ctx->u.rep->last_ptr);
+                LAST_PTR_PUSH();
                 ctx->u.rep->last_ptr = state->ptr;
                 DO_JUMP(JUMP_MAX_UNTIL_2, jump_max_until_2,
                         ctx->u.rep->pattern+3);
-                DATA_POP(&ctx->u.rep->last_ptr);
+                LAST_PTR_POP();
                 if (ret) {
                     MARK_POP_DISCARD(ctx->lastmark);
                     RETURN_ON_ERROR(ret);
@@ -1233,11 +1270,11 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
 
             ctx->u.rep->count = ctx->count;
             /* zero-width match protection */
-            DATA_PUSH(&ctx->u.rep->last_ptr);
+            LAST_PTR_PUSH();
             ctx->u.rep->last_ptr = state->ptr;
             DO_JUMP(JUMP_MIN_UNTIL_3,jump_min_until_3,
                     ctx->u.rep->pattern+3);
-            DATA_POP(&ctx->u.rep->last_ptr);
+            LAST_PTR_POP();
             if (ret) {
                 RETURN_ON_ERROR(ret);
                 RETURN_SUCCESS;
@@ -1334,6 +1371,10 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
                     MARK_POP(ctx->lastmark);
                     LASTMARK_RESTORE();
 
+                    /* Restore the global Input Stream pointer
+                       since it can change after jumps. */
+                    state->ptr = ptr;
+
                     /* We have sufficient matches, so exit loop. */
                     break;
                 }
@@ -1503,7 +1544,7 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
             /* <ASSERT> <skip> <back> <pattern> */
             TRACE(("|%p|%p|ASSERT %d\n", pattern,
                    ptr, pattern[1]));
-            if (ptr - (SRE_CHAR *)state->beginning < (Py_ssize_t)pattern[1])
+            if ((uintptr_t)(ptr - (SRE_CHAR *)state->beginning) < pattern[1])
                 RETURN_FAILURE;
             state->ptr = ptr - pattern[1];
             DO_JUMP0(JUMP_ASSERT, jump_assert, pattern+2);
@@ -1516,7 +1557,7 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
             /* <ASSERT_NOT> <skip> <back> <pattern> */
             TRACE(("|%p|%p|ASSERT_NOT %d\n", pattern,
                    ptr, pattern[1]));
-            if (ptr - (SRE_CHAR *)state->beginning >= (Py_ssize_t)pattern[1]) {
+            if ((uintptr_t)(ptr - (SRE_CHAR *)state->beginning) >= pattern[1]) {
                 state->ptr = ptr - pattern[1];
                 LASTMARK_SAVE();
                 if (state->repeat)
@@ -1561,8 +1602,10 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
     ctx_pos = ctx->last_ctx_pos;
     jump = ctx->jump;
     DATA_POP_DISCARD(ctx);
-    if (ctx_pos == -1)
+    if (ctx_pos == -1) {
+        state->sigcount = sigcount;
         return ret;
+    }
     DATA_LOOKUP_AT(SRE(match_context), ctx, ctx_pos);
 
     switch (jump) {
@@ -1639,6 +1682,7 @@ SRE(search)(SRE_STATE* state, SRE_CODE* pattern)
     SRE_CODE* charset = NULL;
     SRE_CODE* overlap = NULL;
     int flags = 0;
+    INIT_TRACE(state);
 
     if (ptr > end)
         return 0;
@@ -1649,9 +1693,9 @@ SRE(search)(SRE_STATE* state, SRE_CODE* pattern)
 
         flags = pattern[2];
 
-        if (pattern[3] && end - ptr < (Py_ssize_t)pattern[3]) {
-            TRACE(("reject (got %u chars, need %u)\n",
-                   (unsigned int)(end - ptr), pattern[3]));
+        if (pattern[3] && (uintptr_t)(end - ptr) < pattern[3]) {
+            TRACE(("reject (got %tu chars, need %zu)\n",
+                   end - ptr, (size_t) pattern[3]));
             return 0;
         }
         if (pattern[3] > 1) {
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 016a5a5cbca548..90b600f4b776a3 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -14,6 +14,10 @@
        http://bugs.python.org/issue8108#msg102867 ?
 */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 /* Don't warn about deprecated functions, */
 #ifndef OPENSSL_API_COMPAT
   // 0x10101000L == 1.1.1, 30000 == 3.0.0
@@ -21,9 +25,10 @@
 #endif
 #define OPENSSL_NO_DEPRECATED 1
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
+#include "pycore_fileutils.h"     // _PyIsSelectable_fd()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
 
 /* Include symbols from _socket module */
 #include "socketmodule.h"
@@ -116,7 +121,9 @@ static void _PySSLFixErrno(void) {
 #endif
 
 /* Include generated data (error codes) */
-#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
+#if (OPENSSL_VERSION_NUMBER >= 0x30100000L)
+#include "_ssl_data_31.h"
+#elif (OPENSSL_VERSION_NUMBER >= 0x30000000L)
 #include "_ssl_data_300.h"
 #elif (OPENSSL_VERSION_NUMBER >= 0x10101000L) && !defined(LIBRESSL_VERSION_NUMBER)
 #include "_ssl_data_111.h"
@@ -294,6 +301,10 @@ typedef struct {
     BIO *keylog_bio;
     /* Cached module state, also used in SSLSocket and SSLSession code. */
     _sslmodulestate *state;
+#ifndef OPENSSL_NO_PSK
+    PyObject *psk_client_callback;
+    PyObject *psk_server_callback;
+#endif
 } PySSLContext;
 
 typedef struct {
@@ -376,9 +387,25 @@ typedef enum {
 #define ERRSTR1(x,y,z) (x ":" y ": " z)
 #define ERRSTR(x) ERRSTR1("_ssl.c", Py_STRINGIFY(__LINE__), x)
 
-/* Get the socket from a PySSLSocket, if it has one */
-#define GET_SOCKET(obj) ((obj)->Socket ? \
-    (PySocketSockObject *) PyWeakref_GetObject((obj)->Socket) : NULL)
+// Get the socket from a PySSLSocket, if it has one.
+// Return a borrowed reference.
+static inline PySocketSockObject* GET_SOCKET(PySSLSocket *obj) {
+    if (obj->Socket) {
+        PyObject *sock = _PyWeakref_GET_REF(obj->Socket);
+        if (sock != NULL) {
+            // GET_SOCKET() returns a borrowed reference
+            Py_DECREF(sock);
+        }
+        else {
+            // dead weak reference
+            sock = Py_None;
+        }
+        return (PySocketSockObject *)sock;  // borrowed reference
+    }
+    else {
+        return NULL;
+    }
+}
 
 /* If sock is NULL, use a timeout of 0 second */
 #define GET_SOCKET_TIMEOUT(sock) \
@@ -645,6 +672,10 @@ PySSL_SetError(PySSLSocket *sslsock, int ret, const char *filename, int lineno)
                     errstr = "Some I/O error occurred";
                 }
             } else {
+                if (ERR_GET_LIB(e) == ERR_LIB_SSL &&
+                        ERR_GET_REASON(e) == SSL_R_CERTIFICATE_VERIFY_FAILED) {
+                    type = state->PySSLCertVerificationErrorObject;
+                }
                 p = PY_SSL_ERROR_SYSCALL;
             }
             break;
@@ -826,6 +857,15 @@ newPySSLSocket(PySSLContext *sslctx, PySocketSockObject *sock,
         _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);
         return NULL;
     }
+
+    if (socket_type == PY_SSL_SERVER) {
+#define SID_CTX "Python"
+        /* Set the session id context (server-side only) */
+        SSL_set_session_id_context(self->ssl, (const unsigned char *) SID_CTX,
+                                   sizeof(SID_CTX));
+#undef SID_CTX
+    }
+
     /* bpo43522 and OpenSSL < 1.1.1l: copy hostflags manually */
 #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION < 0x101010cf
     X509_VERIFY_PARAM *ssl_params = SSL_get0_param(self->ssl);
@@ -1330,10 +1370,8 @@ _get_peer_alt_names (_sslmodulestate *state, X509 *certificate) {
                         p[0], p[1], p[2], p[3]
                     );
                 } else if (name->d.ip->length == 16) {
-                    /* PyUnicode_FromFormat() does not support %X */
                     unsigned char *p = name->d.ip->data;
-                    len = sprintf(
-                        buf,
+                    v = PyUnicode_FromFormat(
                         "%X:%X:%X:%X:%X:%X:%X:%X",
                         p[0] << 8 | p[1],
                         p[2] << 8 | p[3],
@@ -1344,7 +1382,6 @@ _get_peer_alt_names (_sslmodulestate *state, X509 *certificate) {
                         p[12] << 8 | p[13],
                         p[14] << 8 | p[15]
                     );
-                    v = PyUnicode_FromStringAndSize(buf, len);
                 } else {
                     v = PyUnicode_FromString("<invalid>");
                 }
@@ -2178,13 +2215,14 @@ PyDoc_STRVAR(PySSL_get_server_hostname_doc,
 static PyObject *
 PySSL_get_owner(PySSLSocket *self, void *c)
 {
-    PyObject *owner;
-
-    if (self->owner == NULL)
+    if (self->owner == NULL) {
         Py_RETURN_NONE;
-
-    owner = PyWeakref_GetObject(self->owner);
-    return Py_NewRef(owner);
+    }
+    PyObject *owner = _PyWeakref_GET_REF(self->owner);
+    if (owner == NULL) {
+        Py_RETURN_NONE;
+    }
+    return owner;
 }
 
 static int
@@ -2780,7 +2818,7 @@ _ssl_session_dup(SSL_SESSION *session) {
     /* get length */
     slen = i2d_SSL_SESSION(session, NULL);
     if (slen == 0 || slen > 0xFF00) {
-        PyErr_SetString(PyExc_ValueError, "i2d() failed.");
+        PyErr_SetString(PyExc_ValueError, "i2d() failed");
         goto error;
     }
     if ((senc = PyMem_Malloc(slen)) == NULL) {
@@ -2789,12 +2827,13 @@ _ssl_session_dup(SSL_SESSION *session) {
     }
     p = senc;
     if (!i2d_SSL_SESSION(session, &p)) {
-        PyErr_SetString(PyExc_ValueError, "i2d() failed.");
+        PyErr_SetString(PyExc_ValueError, "i2d() failed");
         goto error;
     }
     const_p = senc;
     newsession = d2i_SSL_SESSION(NULL, &const_p, slen);
-    if (session == NULL) {
+    if (newsession == NULL) {
+        PyErr_SetString(PyExc_ValueError, "d2i() failed");
         goto error;
     }
     PyMem_Free(senc);
@@ -2997,7 +3036,7 @@ _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
 /*[clinic end generated code: output=2cf0d7a0741b6bd1 input=8d58a805b95fc534]*/
 {
     PySSLContext *self;
-    long options;
+    uint64_t options;
     const SSL_METHOD *method = NULL;
     SSL_CTX *ctx = NULL;
     X509_VERIFY_PARAM *params;
@@ -3088,6 +3127,10 @@ _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
     self->alpn_protocols = NULL;
     self->set_sni_cb = NULL;
     self->state = get_ssl_state(module);
+#ifndef OPENSSL_NO_PSK
+    self->psk_client_callback = NULL;
+    self->psk_server_callback = NULL;
+#endif
 
     /* Don't check host name by default */
     if (proto_version == PY_SSL_VERSION_TLS_CLIENT) {
@@ -3167,11 +3210,6 @@ _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
        usage for no cost at all. */
     SSL_CTX_set_mode(self->ctx, SSL_MODE_RELEASE_BUFFERS);
 
-#define SID_CTX "Python"
-    SSL_CTX_set_session_id_context(self->ctx, (const unsigned char *) SID_CTX,
-                                   sizeof(SID_CTX));
-#undef SID_CTX
-
     params = SSL_CTX_get0_param(self->ctx);
     /* Improve trust chain building when cross-signed intermediate
        certificates are present. See https://bugs.python.org/issue23476. */
@@ -3205,6 +3243,10 @@ context_clear(PySSLContext *self)
     Py_CLEAR(self->set_sni_cb);
     Py_CLEAR(self->msg_cb);
     Py_CLEAR(self->keylog_filename);
+#ifndef OPENSSL_NO_PSK
+    Py_CLEAR(self->psk_client_callback);
+    Py_CLEAR(self->psk_server_callback);
+#endif
     if (self->keylog_bio != NULL) {
         PySSL_BEGIN_ALLOW_THREADS
         BIO_free_all(self->keylog_bio);
@@ -3595,20 +3637,32 @@ PyDoc_STRVAR(PySSLContext_security_level_doc, "The current security level");
 static PyObject *
 get_options(PySSLContext *self, void *c)
 {
-    return PyLong_FromLong(SSL_CTX_get_options(self->ctx));
+    uint64_t options = SSL_CTX_get_options(self->ctx);
+    Py_BUILD_ASSERT(sizeof(unsigned long long) >= sizeof(options));
+    return PyLong_FromUnsignedLongLong(options);
 }
 
 static int
 set_options(PySSLContext *self, PyObject *arg, void *c)
 {
-    long new_opts, opts, set, clear;
-    long opt_no = (
+    PyObject *new_opts_obj;
+    unsigned long long new_opts_arg;
+    uint64_t new_opts, opts, clear, set;
+    uint64_t opt_no = (
         SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1 |
         SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1_2 | SSL_OP_NO_TLSv1_3
     );
 
-    if (!PyArg_Parse(arg, "l", &new_opts))
+    if (!PyArg_Parse(arg, "O!", &PyLong_Type, &new_opts_obj)) {
+        return -1;
+    }
+    new_opts_arg = PyLong_AsUnsignedLongLong(new_opts_obj);
+    if (new_opts_arg == (unsigned long long)-1 && PyErr_Occurred()) {
         return -1;
+    }
+    Py_BUILD_ASSERT(sizeof(new_opts) >= sizeof(new_opts_arg));
+    new_opts = (uint64_t)new_opts_arg;
+
     opts = SSL_CTX_get_options(self->ctx);
     clear = opts & ~new_opts;
     set = ~opts & new_opts;
@@ -3622,8 +3676,9 @@ set_options(PySSLContext *self, PyObject *arg, void *c)
     if (clear) {
         SSL_CTX_clear_options(self->ctx, clear);
     }
-    if (set)
+    if (set) {
         SSL_CTX_set_options(self->ctx, set);
+    }
     return 0;
 }
 
@@ -3872,8 +3927,8 @@ _ssl__SSLContext_load_cert_chain_impl(PySSLContext *self, PyObject *certfile,
             /* the password callback has already set the error information */
         }
         else if (errno != 0) {
-            ERR_clear_error();
             PyErr_SetFromErrno(PyExc_OSError);
+            ERR_clear_error();
         }
         else {
             _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);
@@ -3893,8 +3948,8 @@ _ssl__SSLContext_load_cert_chain_impl(PySSLContext *self, PyObject *certfile,
             /* the password callback has already set the error information */
         }
         else if (errno != 0) {
-            ERR_clear_error();
             PyErr_SetFromErrno(PyExc_OSError);
+            ERR_clear_error();
         }
         else {
             _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);
@@ -4090,7 +4145,8 @@ _ssl__SSLContext_load_verify_locations_impl(PySSLContext *self,
             if (PyObject_GetBuffer(cadata, &buf, PyBUF_SIMPLE)) {
                 goto error;
             }
-            if (!PyBuffer_IsContiguous(&buf, 'C') || buf.ndim > 1) {
+            assert(PyBuffer_IsContiguous(&buf, 'C'));
+            if (buf.ndim > 1) {
                 PyBuffer_Release(&buf);
                 PyErr_SetString(PyExc_TypeError,
                                 "cadata should be a contiguous buffer with "
@@ -4123,8 +4179,8 @@ _ssl__SSLContext_load_verify_locations_impl(PySSLContext *self,
         PySSL_END_ALLOW_THREADS
         if (r != 1) {
             if (errno != 0) {
-                ERR_clear_error();
                 PyErr_SetFromErrno(PyExc_OSError);
+                ERR_clear_error();
             }
             else {
                 _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);
@@ -4171,8 +4227,8 @@ _ssl__SSLContext_load_dh_params(PySSLContext *self, PyObject *filepath)
     PySSL_END_ALLOW_THREADS
     if (dh == NULL) {
         if (errno != 0) {
-            ERR_clear_error();
             PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, filepath);
+            ERR_clear_error();
         }
         else {
             _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);
@@ -4394,14 +4450,13 @@ _servername_callback(SSL *s, int *al, void *args)
      * will be passed. If both do not exist only then the C-level object is
      * passed. */
     if (ssl->owner)
-        ssl_socket = PyWeakref_GetObject(ssl->owner);
+        ssl_socket = _PyWeakref_GET_REF(ssl->owner);
     else if (ssl->Socket)
-        ssl_socket = PyWeakref_GetObject(ssl->Socket);
+        ssl_socket = _PyWeakref_GET_REF(ssl->Socket);
     else
-        ssl_socket = (PyObject *) ssl;
+        ssl_socket = Py_NewRef(ssl);
 
-    Py_INCREF(ssl_socket);
-    if (ssl_socket == Py_None)
+    if (ssl_socket == NULL)
         goto error;
 
     if (servername == NULL) {
@@ -4619,6 +4674,238 @@ _ssl__SSLContext_get_ca_certs_impl(PySSLContext *self, int binary_form)
     return NULL;
 }
 
+#ifndef OPENSSL_NO_PSK
+static unsigned int psk_client_callback(SSL *s,
+                                        const char *hint,
+                                        char *identity,
+                                        unsigned int max_identity_len,
+                                        unsigned char *psk,
+                                        unsigned int max_psk_len)
+{
+    PyGILState_STATE gstate = PyGILState_Ensure();
+    PyObject *callback = NULL;
+
+    PySSLSocket *ssl = SSL_get_app_data(s);
+    if (ssl == NULL || ssl->ctx == NULL) {
+        goto error;
+    }
+    callback = ssl->ctx->psk_client_callback;
+    if (callback == NULL) {
+        goto error;
+    }
+
+    PyObject *hint_str = (hint != NULL && hint[0] != '\0') ?
+            PyUnicode_DecodeUTF8(hint, strlen(hint), "strict") :
+            Py_NewRef(Py_None);
+    if (hint_str == NULL) {
+        /* The remote side has sent an invalid UTF-8 string
+         * (breaking the standard), drop the connection without
+         * raising a decode exception. */
+        PyErr_Clear();
+        goto error;
+    }
+    PyObject *result = PyObject_CallFunctionObjArgs(callback, hint_str, NULL);
+    Py_DECREF(hint_str);
+
+    if (result == NULL) {
+        goto error;
+    }
+
+    const char *psk_;
+    const char *identity_;
+    Py_ssize_t psk_len_;
+    Py_ssize_t identity_len_ = 0;
+    if (!PyArg_ParseTuple(result, "z#y#", &identity_, &identity_len_, &psk_, &psk_len_)) {
+        Py_DECREF(result);
+        goto error;
+    }
+
+    if (identity_len_ + 1 > max_identity_len || psk_len_ > max_psk_len) {
+        Py_DECREF(result);
+        goto error;
+    }
+    memcpy(psk, psk_, psk_len_);
+    if (identity_ != NULL) {
+        memcpy(identity, identity_, identity_len_);
+    }
+    identity[identity_len_] = 0;
+
+    Py_DECREF(result);
+
+    PyGILState_Release(gstate);
+    return (unsigned int)psk_len_;
+
+error:
+    if (PyErr_Occurred()) {
+        PyErr_WriteUnraisable(callback);
+    }
+    PyGILState_Release(gstate);
+    return 0;
+}
+#endif
+
+/*[clinic input]
+_ssl._SSLContext.set_psk_client_callback
+    callback: object
+
+[clinic start generated code]*/
+
+static PyObject *
+_ssl__SSLContext_set_psk_client_callback_impl(PySSLContext *self,
+                                              PyObject *callback)
+/*[clinic end generated code: output=0aba86f6ed75119e input=7627bae0e5ee7635]*/
+{
+#ifndef OPENSSL_NO_PSK
+    if (self->protocol == PY_SSL_VERSION_TLS_SERVER) {
+        _setSSLError(get_state_ctx(self),
+                     "Cannot add PSK client callback to a "
+                     "PROTOCOL_TLS_SERVER context", 0, __FILE__, __LINE__);
+        return NULL;
+    }
+
+    SSL_psk_client_cb_func ssl_callback;
+    if (callback == Py_None) {
+        callback = NULL;
+        // Delete the existing callback
+        ssl_callback = NULL;
+    } else {
+        if (!PyCallable_Check(callback)) {
+            PyErr_SetString(PyExc_TypeError, "callback must be callable");
+            return NULL;
+        }
+        ssl_callback = psk_client_callback;
+    }
+
+    Py_XDECREF(self->psk_client_callback);
+    Py_XINCREF(callback);
+
+    self->psk_client_callback = callback;
+    SSL_CTX_set_psk_client_callback(self->ctx, ssl_callback);
+
+    Py_RETURN_NONE;
+#else
+    PyErr_SetString(PyExc_NotImplementedError,
+                    "TLS-PSK is not supported by your OpenSSL version.");
+    return NULL;
+#endif
+}
+
+#ifndef OPENSSL_NO_PSK
+static unsigned int psk_server_callback(SSL *s,
+                                        const char *identity,
+                                        unsigned char *psk,
+                                        unsigned int max_psk_len)
+{
+    PyGILState_STATE gstate = PyGILState_Ensure();
+    PyObject *callback = NULL;
+
+    PySSLSocket *ssl = SSL_get_app_data(s);
+    if (ssl == NULL || ssl->ctx == NULL) {
+        goto error;
+    }
+    callback = ssl->ctx->psk_server_callback;
+    if (callback == NULL) {
+        goto error;
+    }
+
+    PyObject *identity_str = (identity != NULL && identity[0] != '\0') ?
+            PyUnicode_DecodeUTF8(identity, strlen(identity), "strict") :
+            Py_NewRef(Py_None);
+    if (identity_str == NULL) {
+        /* The remote side has sent an invalid UTF-8 string
+         * (breaking the standard), drop the connection without
+         * raising a decode exception. */
+        PyErr_Clear();
+        goto error;
+    }
+    PyObject *result = PyObject_CallFunctionObjArgs(callback, identity_str, NULL);
+    Py_DECREF(identity_str);
+
+    if (result == NULL) {
+        goto error;
+    }
+
+    char *psk_;
+    Py_ssize_t psk_len_;
+    if (PyBytes_AsStringAndSize(result, &psk_, &psk_len_) < 0) {
+        Py_DECREF(result);
+        goto error;
+    }
+
+    if (psk_len_ > max_psk_len) {
+        Py_DECREF(result);
+        goto error;
+    }
+    memcpy(psk, psk_, psk_len_);
+
+    Py_DECREF(result);
+
+    PyGILState_Release(gstate);
+    return (unsigned int)psk_len_;
+
+error:
+    if (PyErr_Occurred()) {
+        PyErr_WriteUnraisable(callback);
+    }
+    PyGILState_Release(gstate);
+    return 0;
+}
+#endif
+
+/*[clinic input]
+_ssl._SSLContext.set_psk_server_callback
+    callback: object
+    identity_hint: str(accept={str, NoneType}) = None
+
+[clinic start generated code]*/
+
+static PyObject *
+_ssl__SSLContext_set_psk_server_callback_impl(PySSLContext *self,
+                                              PyObject *callback,
+                                              const char *identity_hint)
+/*[clinic end generated code: output=1f4d6a4e09a92b03 input=65d4b6022aa85ea3]*/
+{
+#ifndef OPENSSL_NO_PSK
+    if (self->protocol == PY_SSL_VERSION_TLS_CLIENT) {
+        _setSSLError(get_state_ctx(self),
+                     "Cannot add PSK server callback to a "
+                     "PROTOCOL_TLS_CLIENT context", 0, __FILE__, __LINE__);
+        return NULL;
+    }
+
+    SSL_psk_server_cb_func ssl_callback;
+    if (callback == Py_None) {
+        callback = NULL;
+        // Delete the existing callback and hint
+        ssl_callback = NULL;
+        identity_hint = NULL;
+    } else {
+        if (!PyCallable_Check(callback)) {
+            PyErr_SetString(PyExc_TypeError, "callback must be callable");
+            return NULL;
+        }
+        ssl_callback = psk_server_callback;
+    }
+
+    if (SSL_CTX_use_psk_identity_hint(self->ctx, identity_hint) != 1) {
+        PyErr_SetString(PyExc_ValueError, "failed to set identity hint");
+        return NULL;
+    }
+
+    Py_XDECREF(self->psk_server_callback);
+    Py_XINCREF(callback);
+
+    self->psk_server_callback = callback;
+    SSL_CTX_set_psk_server_callback(self->ctx, ssl_callback);
+
+    Py_RETURN_NONE;
+#else
+    PyErr_SetString(PyExc_NotImplementedError,
+                    "TLS-PSK is not supported by your OpenSSL version.");
+    return NULL;
+#endif
+}
+
 
 static PyGetSetDef context_getsetlist[] = {
     {"check_hostname", (getter) get_check_hostname,
@@ -4673,6 +4960,8 @@ static struct PyMethodDef context_methods[] = {
     _SSL__SSLCONTEXT_CERT_STORE_STATS_METHODDEF
     _SSL__SSLCONTEXT_GET_CA_CERTS_METHODDEF
     _SSL__SSLCONTEXT_GET_CIPHERS_METHODDEF
+    _SSL__SSLCONTEXT_SET_PSK_CLIENT_CALLBACK_METHODDEF
+    _SSL__SSLCONTEXT_SET_PSK_SERVER_CALLBACK_METHODDEF
     {NULL, NULL}        /* sentinel */
 };
 
@@ -5732,56 +6021,56 @@ sslmodule_init_socketapi(PyObject *module)
     return 0;
 }
 
+
+static int
+sslmodule_add_option(PyObject *m, const char *name, uint64_t value)
+{
+    Py_BUILD_ASSERT(sizeof(unsigned long long) >= sizeof(value));
+    return PyModule_Add(m, name, PyLong_FromUnsignedLongLong(value));
+}
+
+
 static int
 sslmodule_init_constants(PyObject *m)
 {
+    if (PyModule_AddStringConstant(m, "_DEFAULT_CIPHERS",
+                                   PY_SSL_DEFAULT_CIPHER_STRING) < 0)
+    {
+        return -1;
+    }
+
+#define ADD_INT_CONST(NAME, VALUE) do {                 \
+    if (PyModule_AddIntConstant(m, NAME, VALUE) < 0) {  \
+        return -1;                                      \
+    }                                                   \
+} while (0)
 
-    PyModule_AddStringConstant(m, "_DEFAULT_CIPHERS",
-                               PY_SSL_DEFAULT_CIPHER_STRING);
-
-    PyModule_AddIntConstant(m, "SSL_ERROR_ZERO_RETURN",
-                            PY_SSL_ERROR_ZERO_RETURN);
-    PyModule_AddIntConstant(m, "SSL_ERROR_WANT_READ",
-                            PY_SSL_ERROR_WANT_READ);
-    PyModule_AddIntConstant(m, "SSL_ERROR_WANT_WRITE",
-                            PY_SSL_ERROR_WANT_WRITE);
-    PyModule_AddIntConstant(m, "SSL_ERROR_WANT_X509_LOOKUP",
-                            PY_SSL_ERROR_WANT_X509_LOOKUP);
-    PyModule_AddIntConstant(m, "SSL_ERROR_SYSCALL",
-                            PY_SSL_ERROR_SYSCALL);
-    PyModule_AddIntConstant(m, "SSL_ERROR_SSL",
-                            PY_SSL_ERROR_SSL);
-    PyModule_AddIntConstant(m, "SSL_ERROR_WANT_CONNECT",
-                            PY_SSL_ERROR_WANT_CONNECT);
+    ADD_INT_CONST("SSL_ERROR_ZERO_RETURN", PY_SSL_ERROR_ZERO_RETURN);
+    ADD_INT_CONST("SSL_ERROR_WANT_READ", PY_SSL_ERROR_WANT_READ);
+    ADD_INT_CONST("SSL_ERROR_WANT_WRITE", PY_SSL_ERROR_WANT_WRITE);
+    ADD_INT_CONST("SSL_ERROR_WANT_X509_LOOKUP", PY_SSL_ERROR_WANT_X509_LOOKUP);
+    ADD_INT_CONST("SSL_ERROR_SYSCALL", PY_SSL_ERROR_SYSCALL);
+    ADD_INT_CONST("SSL_ERROR_SSL", PY_SSL_ERROR_SSL);
+    ADD_INT_CONST("SSL_ERROR_WANT_CONNECT", PY_SSL_ERROR_WANT_CONNECT);
     /* non ssl.h errorcodes */
-    PyModule_AddIntConstant(m, "SSL_ERROR_EOF",
-                            PY_SSL_ERROR_EOF);
-    PyModule_AddIntConstant(m, "SSL_ERROR_INVALID_ERROR_CODE",
-                            PY_SSL_ERROR_INVALID_ERROR_CODE);
+    ADD_INT_CONST("SSL_ERROR_EOF", PY_SSL_ERROR_EOF);
+    ADD_INT_CONST("SSL_ERROR_INVALID_ERROR_CODE",
+                  PY_SSL_ERROR_INVALID_ERROR_CODE);
     /* cert requirements */
-    PyModule_AddIntConstant(m, "CERT_NONE",
-                            PY_SSL_CERT_NONE);
-    PyModule_AddIntConstant(m, "CERT_OPTIONAL",
-                            PY_SSL_CERT_OPTIONAL);
-    PyModule_AddIntConstant(m, "CERT_REQUIRED",
-                            PY_SSL_CERT_REQUIRED);
+    ADD_INT_CONST("CERT_NONE", PY_SSL_CERT_NONE);
+    ADD_INT_CONST("CERT_OPTIONAL", PY_SSL_CERT_OPTIONAL);
+    ADD_INT_CONST("CERT_REQUIRED", PY_SSL_CERT_REQUIRED);
     /* CRL verification for verification_flags */
-    PyModule_AddIntConstant(m, "VERIFY_DEFAULT",
-                            0);
-    PyModule_AddIntConstant(m, "VERIFY_CRL_CHECK_LEAF",
-                            X509_V_FLAG_CRL_CHECK);
-    PyModule_AddIntConstant(m, "VERIFY_CRL_CHECK_CHAIN",
-                            X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
-    PyModule_AddIntConstant(m, "VERIFY_X509_STRICT",
-                            X509_V_FLAG_X509_STRICT);
-    PyModule_AddIntConstant(m, "VERIFY_ALLOW_PROXY_CERTS",
-                            X509_V_FLAG_ALLOW_PROXY_CERTS);
-    PyModule_AddIntConstant(m, "VERIFY_X509_TRUSTED_FIRST",
-                            X509_V_FLAG_TRUSTED_FIRST);
+    ADD_INT_CONST("VERIFY_DEFAULT", 0);
+    ADD_INT_CONST("VERIFY_CRL_CHECK_LEAF", X509_V_FLAG_CRL_CHECK);
+    ADD_INT_CONST("VERIFY_CRL_CHECK_CHAIN",
+                  X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
+    ADD_INT_CONST("VERIFY_X509_STRICT", X509_V_FLAG_X509_STRICT);
+    ADD_INT_CONST("VERIFY_ALLOW_PROXY_CERTS", X509_V_FLAG_ALLOW_PROXY_CERTS);
+    ADD_INT_CONST("VERIFY_X509_TRUSTED_FIRST", X509_V_FLAG_TRUSTED_FIRST);
 
 #ifdef X509_V_FLAG_PARTIAL_CHAIN
-    PyModule_AddIntConstant(m, "VERIFY_X509_PARTIAL_CHAIN",
-                            X509_V_FLAG_PARTIAL_CHAIN);
+    ADD_INT_CONST("VERIFY_X509_PARTIAL_CHAIN", X509_V_FLAG_PARTIAL_CHAIN);
 #endif
 
     /* Alert Descriptions from ssl.h */
@@ -5789,7 +6078,7 @@ sslmodule_init_constants(PyObject *m)
     /* http://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-6 */
 
 #define ADD_AD_CONSTANT(s) \
-    PyModule_AddIntConstant(m, "ALERT_DESCRIPTION_"#s, \
+    ADD_INT_CONST("ALERT_DESCRIPTION_"#s, \
                             SSL_AD_##s)
 
     ADD_AD_CONSTANT(CLOSE_NOTIFY);
@@ -5837,110 +6126,105 @@ sslmodule_init_constants(PyObject *m)
 
     /* protocol versions */
 #ifndef OPENSSL_NO_SSL3
-    PyModule_AddIntConstant(m, "PROTOCOL_SSLv3",
-                            PY_SSL_VERSION_SSL3);
+    ADD_INT_CONST("PROTOCOL_SSLv3", PY_SSL_VERSION_SSL3);
 #endif
-    PyModule_AddIntConstant(m, "PROTOCOL_SSLv23",
-                            PY_SSL_VERSION_TLS);
-    PyModule_AddIntConstant(m, "PROTOCOL_TLS",
-                            PY_SSL_VERSION_TLS);
-    PyModule_AddIntConstant(m, "PROTOCOL_TLS_CLIENT",
-                            PY_SSL_VERSION_TLS_CLIENT);
-    PyModule_AddIntConstant(m, "PROTOCOL_TLS_SERVER",
-                            PY_SSL_VERSION_TLS_SERVER);
-    PyModule_AddIntConstant(m, "PROTOCOL_TLSv1",
-                            PY_SSL_VERSION_TLS1);
-    PyModule_AddIntConstant(m, "PROTOCOL_TLSv1_1",
-                            PY_SSL_VERSION_TLS1_1);
-    PyModule_AddIntConstant(m, "PROTOCOL_TLSv1_2",
-                            PY_SSL_VERSION_TLS1_2);
+    ADD_INT_CONST("PROTOCOL_SSLv23", PY_SSL_VERSION_TLS);
+    ADD_INT_CONST("PROTOCOL_TLS", PY_SSL_VERSION_TLS);
+    ADD_INT_CONST("PROTOCOL_TLS_CLIENT", PY_SSL_VERSION_TLS_CLIENT);
+    ADD_INT_CONST("PROTOCOL_TLS_SERVER", PY_SSL_VERSION_TLS_SERVER);
+    ADD_INT_CONST("PROTOCOL_TLSv1", PY_SSL_VERSION_TLS1);
+    ADD_INT_CONST("PROTOCOL_TLSv1_1", PY_SSL_VERSION_TLS1_1);
+    ADD_INT_CONST("PROTOCOL_TLSv1_2", PY_SSL_VERSION_TLS1_2);
+
+#define ADD_OPTION(NAME, VALUE) if (sslmodule_add_option(m, NAME, (VALUE)) < 0) return -1
 
     /* protocol options */
-    PyModule_AddIntConstant(m, "OP_ALL",
-                            SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
-    PyModule_AddIntConstant(m, "OP_NO_SSLv2", SSL_OP_NO_SSLv2);
-    PyModule_AddIntConstant(m, "OP_NO_SSLv3", SSL_OP_NO_SSLv3);
-    PyModule_AddIntConstant(m, "OP_NO_TLSv1", SSL_OP_NO_TLSv1);
-    PyModule_AddIntConstant(m, "OP_NO_TLSv1_1", SSL_OP_NO_TLSv1_1);
-    PyModule_AddIntConstant(m, "OP_NO_TLSv1_2", SSL_OP_NO_TLSv1_2);
+    ADD_OPTION("OP_ALL", SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
+    ADD_OPTION("OP_NO_SSLv2", SSL_OP_NO_SSLv2);
+    ADD_OPTION("OP_NO_SSLv3", SSL_OP_NO_SSLv3);
+    ADD_OPTION("OP_NO_TLSv1", SSL_OP_NO_TLSv1);
+    ADD_OPTION("OP_NO_TLSv1_1", SSL_OP_NO_TLSv1_1);
+    ADD_OPTION("OP_NO_TLSv1_2", SSL_OP_NO_TLSv1_2);
 #ifdef SSL_OP_NO_TLSv1_3
-    PyModule_AddIntConstant(m, "OP_NO_TLSv1_3", SSL_OP_NO_TLSv1_3);
+    ADD_OPTION("OP_NO_TLSv1_3", SSL_OP_NO_TLSv1_3);
 #else
-    PyModule_AddIntConstant(m, "OP_NO_TLSv1_3", 0);
+    ADD_OPTION("OP_NO_TLSv1_3", 0);
 #endif
-    PyModule_AddIntConstant(m, "OP_CIPHER_SERVER_PREFERENCE",
+    ADD_OPTION("OP_CIPHER_SERVER_PREFERENCE",
                             SSL_OP_CIPHER_SERVER_PREFERENCE);
-    PyModule_AddIntConstant(m, "OP_SINGLE_DH_USE", SSL_OP_SINGLE_DH_USE);
-    PyModule_AddIntConstant(m, "OP_NO_TICKET", SSL_OP_NO_TICKET);
-    PyModule_AddIntConstant(m, "OP_LEGACY_SERVER_CONNECT",
+    ADD_OPTION("OP_SINGLE_DH_USE", SSL_OP_SINGLE_DH_USE);
+    ADD_OPTION("OP_NO_TICKET", SSL_OP_NO_TICKET);
+    ADD_OPTION("OP_LEGACY_SERVER_CONNECT",
                             SSL_OP_LEGACY_SERVER_CONNECT);
 #ifdef SSL_OP_SINGLE_ECDH_USE
-    PyModule_AddIntConstant(m, "OP_SINGLE_ECDH_USE", SSL_OP_SINGLE_ECDH_USE);
+    ADD_OPTION("OP_SINGLE_ECDH_USE", SSL_OP_SINGLE_ECDH_USE);
 #endif
 #ifdef SSL_OP_NO_COMPRESSION
-    PyModule_AddIntConstant(m, "OP_NO_COMPRESSION",
+    ADD_OPTION("OP_NO_COMPRESSION",
                             SSL_OP_NO_COMPRESSION);
 #endif
 #ifdef SSL_OP_ENABLE_MIDDLEBOX_COMPAT
-    PyModule_AddIntConstant(m, "OP_ENABLE_MIDDLEBOX_COMPAT",
+    ADD_OPTION("OP_ENABLE_MIDDLEBOX_COMPAT",
                             SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
 #endif
 #ifdef SSL_OP_NO_RENEGOTIATION
-    PyModule_AddIntConstant(m, "OP_NO_RENEGOTIATION",
+    ADD_OPTION("OP_NO_RENEGOTIATION",
                             SSL_OP_NO_RENEGOTIATION);
 #endif
 #ifdef SSL_OP_IGNORE_UNEXPECTED_EOF
-    PyModule_AddIntConstant(m, "OP_IGNORE_UNEXPECTED_EOF",
+    ADD_OPTION("OP_IGNORE_UNEXPECTED_EOF",
                             SSL_OP_IGNORE_UNEXPECTED_EOF);
 #endif
 #ifdef SSL_OP_ENABLE_KTLS
-    PyModule_AddIntConstant(m, "OP_ENABLE_KTLS", SSL_OP_ENABLE_KTLS);
+    ADD_OPTION("OP_ENABLE_KTLS", SSL_OP_ENABLE_KTLS);
 #endif
 
+#undef ADD_OPTION
+
 #ifdef X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT
-    PyModule_AddIntConstant(m, "HOSTFLAG_ALWAYS_CHECK_SUBJECT",
-                            X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT);
+    ADD_INT_CONST("HOSTFLAG_ALWAYS_CHECK_SUBJECT",
+                  X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT);
 #endif
 #ifdef X509_CHECK_FLAG_NEVER_CHECK_SUBJECT
-    PyModule_AddIntConstant(m, "HOSTFLAG_NEVER_CHECK_SUBJECT",
-                            X509_CHECK_FLAG_NEVER_CHECK_SUBJECT);
+    ADD_INT_CONST("HOSTFLAG_NEVER_CHECK_SUBJECT",
+                  X509_CHECK_FLAG_NEVER_CHECK_SUBJECT);
 #endif
 #ifdef X509_CHECK_FLAG_NO_WILDCARDS
-    PyModule_AddIntConstant(m, "HOSTFLAG_NO_WILDCARDS",
-                            X509_CHECK_FLAG_NO_WILDCARDS);
+    ADD_INT_CONST("HOSTFLAG_NO_WILDCARDS",
+                  X509_CHECK_FLAG_NO_WILDCARDS);
 #endif
 #ifdef X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS
-    PyModule_AddIntConstant(m, "HOSTFLAG_NO_PARTIAL_WILDCARDS",
-                            X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
+    ADD_INT_CONST("HOSTFLAG_NO_PARTIAL_WILDCARDS",
+                  X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
 #endif
 #ifdef X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS
-    PyModule_AddIntConstant(m, "HOSTFLAG_MULTI_LABEL_WILDCARDS",
-                            X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS);
+    ADD_INT_CONST("HOSTFLAG_MULTI_LABEL_WILDCARDS",
+                  X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS);
 #endif
 #ifdef X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS
-    PyModule_AddIntConstant(m, "HOSTFLAG_SINGLE_LABEL_SUBDOMAINS",
-                            X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS);
+    ADD_INT_CONST("HOSTFLAG_SINGLE_LABEL_SUBDOMAINS",
+                  X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS);
 #endif
 
     /* file types */
-    PyModule_AddIntConstant(m, "ENCODING_PEM", PY_SSL_ENCODING_PEM);
-    PyModule_AddIntConstant(m, "ENCODING_DER", PY_SSL_ENCODING_DER);
+    ADD_INT_CONST("ENCODING_PEM", PY_SSL_ENCODING_PEM);
+    ADD_INT_CONST("ENCODING_DER", PY_SSL_ENCODING_DER);
 
     /* protocol versions */
-    PyModule_AddIntConstant(m, "PROTO_MINIMUM_SUPPORTED",
-                            PY_PROTO_MINIMUM_SUPPORTED);
-    PyModule_AddIntConstant(m, "PROTO_MAXIMUM_SUPPORTED",
-                            PY_PROTO_MAXIMUM_SUPPORTED);
-    PyModule_AddIntConstant(m, "PROTO_SSLv3", PY_PROTO_SSLv3);
-    PyModule_AddIntConstant(m, "PROTO_TLSv1", PY_PROTO_TLSv1);
-    PyModule_AddIntConstant(m, "PROTO_TLSv1_1", PY_PROTO_TLSv1_1);
-    PyModule_AddIntConstant(m, "PROTO_TLSv1_2", PY_PROTO_TLSv1_2);
-    PyModule_AddIntConstant(m, "PROTO_TLSv1_3", PY_PROTO_TLSv1_3);
+    ADD_INT_CONST("PROTO_MINIMUM_SUPPORTED", PY_PROTO_MINIMUM_SUPPORTED);
+    ADD_INT_CONST("PROTO_MAXIMUM_SUPPORTED", PY_PROTO_MAXIMUM_SUPPORTED);
+    ADD_INT_CONST("PROTO_SSLv3", PY_PROTO_SSLv3);
+    ADD_INT_CONST("PROTO_TLSv1", PY_PROTO_TLSv1);
+    ADD_INT_CONST("PROTO_TLSv1_1", PY_PROTO_TLSv1_1);
+    ADD_INT_CONST("PROTO_TLSv1_2", PY_PROTO_TLSv1_2);
+    ADD_INT_CONST("PROTO_TLSv1_3", PY_PROTO_TLSv1_3);
 
 #define addbool(m, key, value) \
     do { \
         PyObject *bool_obj = (value) ? Py_True : Py_False; \
-        PyModule_AddObject((m), (key), Py_NewRef(bool_obj)); \
+        if (PyModule_AddObjectRef((m), (key), bool_obj) < 0) { \
+            return -1; \
+        } \
     } while (0)
 
     addbool(m, "HAS_SNI", 1);
@@ -5981,6 +6265,15 @@ sslmodule_init_constants(PyObject *m)
     addbool(m, "HAS_TLSv1_3", 0);
 #endif
 
+#ifdef OPENSSL_NO_PSK
+    addbool(m, "HAS_PSK", 0);
+#else
+    addbool(m, "HAS_PSK", 1);
+#endif
+
+#undef addbool
+#undef ADD_INT_CONST
+
     return 0;
 }
 
@@ -6002,15 +6295,21 @@ sslmodule_init_errorcodes(PyObject *module)
 
     errcode = error_codes;
     while (errcode->mnemonic != NULL) {
-        PyObject *mnemo, *key;
-        mnemo = PyUnicode_FromString(errcode->mnemonic);
-        key = Py_BuildValue("ii", errcode->library, errcode->reason);
-        if (mnemo == NULL || key == NULL)
+        PyObject *mnemo = PyUnicode_FromString(errcode->mnemonic);
+        if (mnemo == NULL) {
             return -1;
-        if (PyDict_SetItem(state->err_codes_to_names, key, mnemo))
+        }
+        PyObject *key = Py_BuildValue("ii", errcode->library, errcode->reason);
+        if (key == NULL) {
+            Py_DECREF(mnemo);
             return -1;
+        }
+        int rc = PyDict_SetItem(state->err_codes_to_names, key, mnemo);
         Py_DECREF(key);
         Py_DECREF(mnemo);
+        if (rc < 0) {
+            return -1;
+        }
         errcode++;
     }
 
@@ -6061,22 +6360,22 @@ sslmodule_init_versioninfo(PyObject *m)
     */
     libver = OpenSSL_version_num();
     r = PyLong_FromUnsignedLong(libver);
-    if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION_NUMBER", r))
+    if (PyModule_Add(m, "OPENSSL_VERSION_NUMBER", r) < 0)
         return -1;
 
     parse_openssl_version(libver, &major, &minor, &fix, &patch, &status);
     r = Py_BuildValue("IIIII", major, minor, fix, patch, status);
-    if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION_INFO", r))
+    if (PyModule_Add(m, "OPENSSL_VERSION_INFO", r) < 0)
         return -1;
 
     r = PyUnicode_FromString(OpenSSL_version(OPENSSL_VERSION));
-    if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION", r))
+    if (PyModule_Add(m, "OPENSSL_VERSION", r) < 0)
         return -1;
 
     libver = OPENSSL_VERSION_NUMBER;
     parse_openssl_version(libver, &major, &minor, &fix, &patch, &status);
     r = Py_BuildValue("IIIII", major, minor, fix, patch, status);
-    if (r == NULL || PyModule_AddObject(m, "_OPENSSL_API_VERSION", r))
+    if (PyModule_Add(m, "_OPENSSL_API_VERSION", r) < 0)
         return -1;
 
     return 0;
@@ -6153,6 +6452,18 @@ sslmodule_init_strings(PyObject *module)
     return 0;
 }
 
+static int
+sslmodule_init_lock(PyObject *module)
+{
+    _sslmodulestate *state = get_ssl_state(module);
+    state->keylog_lock = PyThread_allocate_lock();
+    if (state->keylog_lock == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    return 0;
+}
+
 static PyModuleDef_Slot sslmodule_slots[] = {
     {Py_mod_exec, sslmodule_init_types},
     {Py_mod_exec, sslmodule_init_exceptions},
@@ -6161,9 +6472,8 @@ static PyModuleDef_Slot sslmodule_slots[] = {
     {Py_mod_exec, sslmodule_init_constants},
     {Py_mod_exec, sslmodule_init_versioninfo},
     {Py_mod_exec, sslmodule_init_strings},
-    // XXX gh-103092: fix isolation.
-    {Py_mod_multiple_interpreters, Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED},
-    //{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {Py_mod_exec, sslmodule_init_lock},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
     {0, NULL}
 };
 
@@ -6222,6 +6532,8 @@ static void
 sslmodule_free(void *m)
 {
     sslmodule_clear((PyObject *)m);
+    _sslmodulestate *state = get_ssl_state(m);
+    PyThread_free_lock(state->keylog_lock);
 }
 
 static struct PyModuleDef _sslmodule_def = {
diff --git a/Modules/_ssl.h b/Modules/_ssl.h
index c1da8b46b536d3..22d93ddcc6d6eb 100644
--- a/Modules/_ssl.h
+++ b/Modules/_ssl.h
@@ -33,6 +33,8 @@ typedef struct {
     PyObject *str_reason;
     PyObject *str_verify_code;
     PyObject *str_verify_message;
+    /* keylog lock */
+    PyThread_type_lock keylog_lock;
 } _sslmodulestate;
 
 static struct PyModuleDef _sslmodule_def;
diff --git a/Modules/_ssl/clinic/cert.c.h b/Modules/_ssl/clinic/cert.c.h
index a052ab2086fd96..0748d32291e3c5 100644
--- a/Modules/_ssl/clinic/cert.c.h
+++ b/Modules/_ssl/clinic/cert.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_ssl_Certificate_public_bytes__doc__,
 "public_bytes($self, /, format=Encoding.PEM)\n"
@@ -59,7 +59,7 @@ _ssl_Certificate_public_bytes(PySSLCertificate *self, PyObject *const *args, Py_
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    format = _PyLong_AsInt(args[0]);
+    format = PyLong_AsInt(args[0]);
     if (format == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -86,4 +86,4 @@ _ssl_Certificate_get_info(PySSLCertificate *self, PyObject *Py_UNUSED(ignored))
 {
     return _ssl_Certificate_get_info_impl(self);
 }
-/*[clinic end generated code: output=82efada014f9b7fe input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5b668226f933a677 input=a9049054013a1b77]*/
diff --git a/Modules/_ssl/debughelpers.c b/Modules/_ssl/debughelpers.c
index 217f224942556e..07e9ce7a6fce2d 100644
--- a/Modules/_ssl/debughelpers.c
+++ b/Modules/_ssl/debughelpers.c
@@ -15,7 +15,6 @@ _PySSL_msg_callback(int write_p, int version, int content_type,
     PyGILState_STATE threadstate;
     PyObject *res = NULL;
     PySSLSocket *ssl_obj = NULL;  /* ssl._SSLSocket, borrowed ref */
-    PyObject *ssl_socket = NULL;  /* ssl.SSLSocket or ssl.SSLObject */
     int msg_type;
 
     threadstate = PyGILState_Ensure();
@@ -27,13 +26,14 @@ _PySSL_msg_callback(int write_p, int version, int content_type,
         return;
     }
 
+    PyObject *ssl_socket;  /* ssl.SSLSocket or ssl.SSLObject */
     if (ssl_obj->owner)
-        ssl_socket = PyWeakref_GetObject(ssl_obj->owner);
+        ssl_socket = _PyWeakref_GET_REF(ssl_obj->owner);
     else if (ssl_obj->Socket)
-        ssl_socket = PyWeakref_GetObject(ssl_obj->Socket);
+        ssl_socket = _PyWeakref_GET_REF(ssl_obj->Socket);
     else
-        ssl_socket = (PyObject *)ssl_obj;
-    Py_INCREF(ssl_socket);
+        ssl_socket = (PyObject *)Py_NewRef(ssl_obj);
+    assert(ssl_socket != NULL);  // _PyWeakref_GET_REF() can return NULL
 
     /* assume that OpenSSL verifies all payload and buf len is of sufficient
        length */
@@ -118,30 +118,22 @@ _PySSL_keylog_callback(const SSL *ssl, const char *line)
     PyGILState_STATE threadstate;
     PySSLSocket *ssl_obj = NULL;  /* ssl._SSLSocket, borrowed ref */
     int res, e;
-    static PyThread_type_lock *lock = NULL;
 
     threadstate = PyGILState_Ensure();
 
     ssl_obj = (PySSLSocket *)SSL_get_app_data(ssl);
     assert(Py_IS_TYPE(ssl_obj, get_state_sock(ssl_obj)->PySSLSocket_Type));
+    PyThread_type_lock lock = get_state_sock(ssl_obj)->keylog_lock;
+    assert(lock != NULL);
     if (ssl_obj->ctx->keylog_bio == NULL) {
         return;
     }
-
-    /* Allocate a static lock to synchronize writes to keylog file.
+    /*
      * The lock is neither released on exit nor on fork(). The lock is
      * also shared between all SSLContexts although contexts may write to
      * their own files. IMHO that's good enough for a non-performance
      * critical debug helper.
      */
-    if (lock == NULL) {
-        lock = PyThread_allocate_lock();
-        if (lock == NULL) {
-            PyErr_SetString(PyExc_MemoryError, "Unable to allocate lock");
-            ssl_obj->exc = PyErr_GetRaisedException();
-            return;
-        }
-    }
 
     PySSL_BEGIN_ALLOW_THREADS
     PyThread_acquire_lock(lock, 1);
diff --git a/Modules/_ssl_data_111.h b/Modules/_ssl_data_111.h
index 85a2f7ec1561ea..093c786e6a26f6 100644
--- a/Modules/_ssl_data_111.h
+++ b/Modules/_ssl_data_111.h
@@ -1,4 +1,4 @@
-/* File generated by Tools/ssl/make_ssl_data.py *//* Generated on 2021-04-09T09:36:21.493286 */
+/* File generated by Tools/ssl/make_ssl_data.py *//* Generated on 2023-06-01T02:58:04.081473 */
 static struct py_ssl_library_code library_codes[] = {
 #ifdef ERR_LIB_ASN1
     {"ASN1", ERR_LIB_ASN1},
@@ -1375,6 +1375,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"UNSUPPORTED_COMPRESSION_ALGORITHM", 46, 151},
   #endif
+  #ifdef CMS_R_UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM
+    {"UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM", ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM},
+  #else
+    {"UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM", 46, 194},
+  #endif
   #ifdef CMS_R_UNSUPPORTED_CONTENT_TYPE
     {"UNSUPPORTED_CONTENT_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE},
   #else
@@ -4860,6 +4865,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"MISSING_PARAMETERS", 20, 290},
   #endif
+  #ifdef SSL_R_MISSING_PSK_KEX_MODES_EXTENSION
+    {"MISSING_PSK_KEX_MODES_EXTENSION", ERR_LIB_SSL, SSL_R_MISSING_PSK_KEX_MODES_EXTENSION},
+  #else
+    {"MISSING_PSK_KEX_MODES_EXTENSION", 20, 310},
+  #endif
   #ifdef SSL_R_MISSING_RSA_CERTIFICATE
     {"MISSING_RSA_CERTIFICATE", ERR_LIB_SSL, SSL_R_MISSING_RSA_CERTIFICATE},
   #else
@@ -5065,6 +5075,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"NULL_SSL_METHOD_PASSED", 20, 196},
   #endif
+  #ifdef SSL_R_OCSP_CALLBACK_FAILURE
+    {"OCSP_CALLBACK_FAILURE", ERR_LIB_SSL, SSL_R_OCSP_CALLBACK_FAILURE},
+  #else
+    {"OCSP_CALLBACK_FAILURE", 20, 294},
+  #endif
   #ifdef SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
     {"OLD_SESSION_CIPHER_NOT_RETURNED", ERR_LIB_SSL, SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED},
   #else
diff --git a/Modules/_ssl_data_300.h b/Modules/_ssl_data_300.h
index 6be8b24ee1a021..dc66731f6b6093 100644
--- a/Modules/_ssl_data_300.h
+++ b/Modules/_ssl_data_300.h
@@ -1,4 +1,4 @@
-/* File generated by Tools/ssl/make_ssl_data.py *//* Generated on 2021-04-09T09:44:43.288448 */
+/* File generated by Tools/ssl/make_ssl_data.py *//* Generated on 2023-06-01T03:03:52.163218 */
 static struct py_ssl_library_code library_codes[] = {
 #ifdef ERR_LIB_ASN1
     {"ASN1", ERR_LIB_ASN1},
@@ -1035,6 +1035,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"NO_INVERSE", 3, 108},
   #endif
+  #ifdef BN_R_NO_PRIME_CANDIDATE
+    {"NO_PRIME_CANDIDATE", ERR_LIB_BN, BN_R_NO_PRIME_CANDIDATE},
+  #else
+    {"NO_PRIME_CANDIDATE", 3, 121},
+  #endif
   #ifdef BN_R_NO_SOLUTION
     {"NO_SOLUTION", ERR_LIB_BN, BN_R_NO_SOLUTION},
   #else
@@ -1255,6 +1260,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INVALID_OPTION", 58, 174},
   #endif
+  #ifdef CMP_R_MISSING_CERTID
+    {"MISSING_CERTID", ERR_LIB_CMP, CMP_R_MISSING_CERTID},
+  #else
+    {"MISSING_CERTID", 58, 165},
+  #endif
   #ifdef CMP_R_MISSING_KEY_INPUT_FOR_CREATING_PROTECTION
     {"MISSING_KEY_INPUT_FOR_CREATING_PROTECTION", ERR_LIB_CMP, CMP_R_MISSING_KEY_INPUT_FOR_CREATING_PROTECTION},
   #else
@@ -1280,21 +1290,41 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"MISSING_PRIVATE_KEY", 58, 131},
   #endif
+  #ifdef CMP_R_MISSING_PRIVATE_KEY_FOR_POPO
+    {"MISSING_PRIVATE_KEY_FOR_POPO", ERR_LIB_CMP, CMP_R_MISSING_PRIVATE_KEY_FOR_POPO},
+  #else
+    {"MISSING_PRIVATE_KEY_FOR_POPO", 58, 190},
+  #endif
   #ifdef CMP_R_MISSING_PROTECTION
     {"MISSING_PROTECTION", ERR_LIB_CMP, CMP_R_MISSING_PROTECTION},
   #else
     {"MISSING_PROTECTION", 58, 143},
   #endif
+  #ifdef CMP_R_MISSING_PUBLIC_KEY
+    {"MISSING_PUBLIC_KEY", ERR_LIB_CMP, CMP_R_MISSING_PUBLIC_KEY},
+  #else
+    {"MISSING_PUBLIC_KEY", 58, 183},
+  #endif
   #ifdef CMP_R_MISSING_REFERENCE_CERT
     {"MISSING_REFERENCE_CERT", ERR_LIB_CMP, CMP_R_MISSING_REFERENCE_CERT},
   #else
     {"MISSING_REFERENCE_CERT", 58, 168},
   #endif
+  #ifdef CMP_R_MISSING_SECRET
+    {"MISSING_SECRET", ERR_LIB_CMP, CMP_R_MISSING_SECRET},
+  #else
+    {"MISSING_SECRET", 58, 178},
+  #endif
   #ifdef CMP_R_MISSING_SENDER_IDENTIFICATION
     {"MISSING_SENDER_IDENTIFICATION", ERR_LIB_CMP, CMP_R_MISSING_SENDER_IDENTIFICATION},
   #else
     {"MISSING_SENDER_IDENTIFICATION", 58, 111},
   #endif
+  #ifdef CMP_R_MISSING_TRUST_ANCHOR
+    {"MISSING_TRUST_ANCHOR", ERR_LIB_CMP, CMP_R_MISSING_TRUST_ANCHOR},
+  #else
+    {"MISSING_TRUST_ANCHOR", 58, 179},
+  #endif
   #ifdef CMP_R_MISSING_TRUST_STORE
     {"MISSING_TRUST_STORE", ERR_LIB_CMP, CMP_R_MISSING_TRUST_STORE},
   #else
@@ -1455,6 +1485,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"WRONG_ALGORITHM_OID", 58, 138},
   #endif
+  #ifdef CMP_R_WRONG_CERTID
+    {"WRONG_CERTID", ERR_LIB_CMP, CMP_R_WRONG_CERTID},
+  #else
+    {"WRONG_CERTID", 58, 189},
+  #endif
   #ifdef CMP_R_WRONG_CERTID_IN_RP
     {"WRONG_CERTID_IN_RP", ERR_LIB_CMP, CMP_R_WRONG_CERTID_IN_RP},
   #else
@@ -1885,6 +1920,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"UNSUPPORTED_COMPRESSION_ALGORITHM", 46, 151},
   #endif
+  #ifdef CMS_R_UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM
+    {"UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM", ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM},
+  #else
+    {"UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM", 46, 194},
+  #endif
   #ifdef CMS_R_UNSUPPORTED_CONTENT_TYPE
     {"UNSUPPORTED_CONTENT_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE},
   #else
@@ -2045,6 +2085,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"RECURSIVE_DIRECTORY_INCLUDE", 14, 111},
   #endif
+  #ifdef CONF_R_RELATIVE_PATH
+    {"RELATIVE_PATH", ERR_LIB_CONF, CONF_R_RELATIVE_PATH},
+  #else
+    {"RELATIVE_PATH", 14, 125},
+  #endif
   #ifdef CONF_R_SSL_COMMAND_SECTION_EMPTY
     {"SSL_COMMAND_SECTION_EMPTY", ERR_LIB_CONF, CONF_R_SSL_COMMAND_SECTION_EMPTY},
   #else
@@ -2235,6 +2280,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INSUFFICIENT_SECURE_DATA_SPACE", 15, 108},
   #endif
+  #ifdef CRYPTO_R_INVALID_NEGATIVE_VALUE
+    {"INVALID_NEGATIVE_VALUE", ERR_LIB_CRYPTO, CRYPTO_R_INVALID_NEGATIVE_VALUE},
+  #else
+    {"INVALID_NEGATIVE_VALUE", 15, 122},
+  #endif
   #ifdef CRYPTO_R_INVALID_NULL_ARGUMENT
     {"INVALID_NULL_ARGUMENT", ERR_LIB_CRYPTO, CRYPTO_R_INVALID_NULL_ARGUMENT},
   #else
@@ -2605,6 +2655,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"SEED_LEN_SMALL", 10, 110},
   #endif
+  #ifdef DSA_R_TOO_MANY_RETRIES
+    {"TOO_MANY_RETRIES", ERR_LIB_DSA, DSA_R_TOO_MANY_RETRIES},
+  #else
+    {"TOO_MANY_RETRIES", 10, 116},
+  #endif
   #ifdef DSO_R_CTRL_FAILED
     {"CTRL_FAILED", ERR_LIB_DSO, DSO_R_CTRL_FAILED},
   #else
@@ -2745,6 +2800,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"EC_GROUP_NEW_BY_NAME_FAILURE", 16, 119},
   #endif
+  #ifdef EC_R_EXPLICIT_PARAMS_NOT_SUPPORTED
+    {"EXPLICIT_PARAMS_NOT_SUPPORTED", ERR_LIB_EC, EC_R_EXPLICIT_PARAMS_NOT_SUPPORTED},
+  #else
+    {"EXPLICIT_PARAMS_NOT_SUPPORTED", 16, 127},
+  #endif
   #ifdef EC_R_FAILED_MAKING_PUBLIC_KEY
     {"FAILED_MAKING_PUBLIC_KEY", ERR_LIB_EC, EC_R_FAILED_MAKING_PUBLIC_KEY},
   #else
@@ -2850,6 +2910,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INVALID_KEY", 16, 116},
   #endif
+  #ifdef EC_R_INVALID_LENGTH
+    {"INVALID_LENGTH", ERR_LIB_EC, EC_R_INVALID_LENGTH},
+  #else
+    {"INVALID_LENGTH", 16, 117},
+  #endif
   #ifdef EC_R_INVALID_NAMED_GROUP_CONVERSION
     {"INVALID_NAMED_GROUP_CONVERSION", ERR_LIB_EC, EC_R_INVALID_NAMED_GROUP_CONVERSION},
   #else
@@ -3010,6 +3075,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"SLOT_FULL", 16, 108},
   #endif
+  #ifdef EC_R_TOO_MANY_RETRIES
+    {"TOO_MANY_RETRIES", ERR_LIB_EC, EC_R_TOO_MANY_RETRIES},
+  #else
+    {"TOO_MANY_RETRIES", 16, 176},
+  #endif
   #ifdef EC_R_UNDEFINED_GENERATOR
     {"UNDEFINED_GENERATOR", ERR_LIB_EC, EC_R_UNDEFINED_GENERATOR},
   #else
@@ -3690,6 +3760,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"PUBLIC_KEY_NOT_RSA", 6, 106},
   #endif
+  #ifdef EVP_R_SETTING_XOF_FAILED
+    {"SETTING_XOF_FAILED", ERR_LIB_EVP, EVP_R_SETTING_XOF_FAILED},
+  #else
+    {"SETTING_XOF_FAILED", 6, 227},
+  #endif
   #ifdef EVP_R_SET_DEFAULT_PROPERTY_FAILURE
     {"SET_DEFAULT_PROPERTY_FAILURE", ERR_LIB_EVP, EVP_R_SET_DEFAULT_PROPERTY_FAILURE},
   #else
@@ -3865,6 +3940,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"FAILED_READING_DATA", 61, 128},
   #endif
+  #ifdef HTTP_R_HEADER_PARSE_ERROR
+    {"HEADER_PARSE_ERROR", ERR_LIB_HTTP, HTTP_R_HEADER_PARSE_ERROR},
+  #else
+    {"HEADER_PARSE_ERROR", 61, 126},
+  #endif
   #ifdef HTTP_R_INCONSISTENT_CONTENT_LENGTH
     {"INCONSISTENT_CONTENT_LENGTH", ERR_LIB_HTTP, HTTP_R_INCONSISTENT_CONTENT_LENGTH},
   #else
@@ -3935,6 +4015,16 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"RESPONSE_PARSE_ERROR", 61, 104},
   #endif
+  #ifdef HTTP_R_RETRY_TIMEOUT
+    {"RETRY_TIMEOUT", ERR_LIB_HTTP, HTTP_R_RETRY_TIMEOUT},
+  #else
+    {"RETRY_TIMEOUT", 61, 129},
+  #endif
+  #ifdef HTTP_R_SERVER_CANCELED_CONNECTION
+    {"SERVER_CANCELED_CONNECTION", ERR_LIB_HTTP, HTTP_R_SERVER_CANCELED_CONNECTION},
+  #else
+    {"SERVER_CANCELED_CONNECTION", 61, 127},
+  #endif
   #ifdef HTTP_R_SOCK_NOT_SUPPORTED
     {"SOCK_NOT_SUPPORTED", ERR_LIB_HTTP, HTTP_R_SOCK_NOT_SUPPORTED},
   #else
@@ -4100,6 +4190,16 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"UNSUPPORTED_REQUESTORNAME_TYPE", 39, 129},
   #endif
+  #ifdef OSSL_DECODER_R_COULD_NOT_DECODE_OBJECT
+    {"COULD_NOT_DECODE_OBJECT", ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_COULD_NOT_DECODE_OBJECT},
+  #else
+    {"COULD_NOT_DECODE_OBJECT", 60, 101},
+  #endif
+  #ifdef OSSL_DECODER_R_DECODER_NOT_FOUND
+    {"DECODER_NOT_FOUND", ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_DECODER_NOT_FOUND},
+  #else
+    {"DECODER_NOT_FOUND", 60, 102},
+  #endif
   #ifdef OSSL_DECODER_R_MISSING_GET_PARAMS
     {"MISSING_GET_PARAMS", ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_MISSING_GET_PARAMS},
   #else
@@ -4190,6 +4290,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"NOT_PARAMETERS", 44, 104},
   #endif
+  #ifdef OSSL_STORE_R_NO_LOADERS_FOUND
+    {"NO_LOADERS_FOUND", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NO_LOADERS_FOUND},
+  #else
+    {"NO_LOADERS_FOUND", 44, 123},
+  #endif
   #ifdef OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR
     {"PASSPHRASE_CALLBACK_ERROR", ERR_LIB_OSSL_STORE, OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR},
   #else
@@ -4935,6 +5040,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INVALID_DIGEST_SIZE", 57, 218},
   #endif
+  #ifdef PROV_R_INVALID_INPUT_LENGTH
+    {"INVALID_INPUT_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_INPUT_LENGTH},
+  #else
+    {"INVALID_INPUT_LENGTH", 57, 230},
+  #endif
   #ifdef PROV_R_INVALID_ITERATION_COUNT
     {"INVALID_ITERATION_COUNT", ERR_LIB_PROV, PROV_R_INVALID_ITERATION_COUNT},
   #else
@@ -4970,6 +5080,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INVALID_MODE", 57, 125},
   #endif
+  #ifdef PROV_R_INVALID_OUTPUT_LENGTH
+    {"INVALID_OUTPUT_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_OUTPUT_LENGTH},
+  #else
+    {"INVALID_OUTPUT_LENGTH", 57, 217},
+  #endif
   #ifdef PROV_R_INVALID_PADDING_MODE
     {"INVALID_PADDING_MODE", ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE},
   #else
@@ -5035,6 +5150,16 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"KEY_SIZE_TOO_SMALL", 57, 171},
   #endif
+  #ifdef PROV_R_LENGTH_TOO_LARGE
+    {"LENGTH_TOO_LARGE", ERR_LIB_PROV, PROV_R_LENGTH_TOO_LARGE},
+  #else
+    {"LENGTH_TOO_LARGE", 57, 202},
+  #endif
+  #ifdef PROV_R_MISMATCHING_DOMAIN_PARAMETERS
+    {"MISMATCHING_DOMAIN_PARAMETERS", ERR_LIB_PROV, PROV_R_MISMATCHING_DOMAIN_PARAMETERS},
+  #else
+    {"MISMATCHING_DOMAIN_PARAMETERS", 57, 203},
+  #endif
   #ifdef PROV_R_MISSING_CEK_ALG
     {"MISSING_CEK_ALG", ERR_LIB_PROV, PROV_R_MISSING_CEK_ALG},
   #else
@@ -5695,6 +5820,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INVALID_LABEL", 4, 160},
   #endif
+  #ifdef RSA_R_INVALID_LENGTH
+    {"INVALID_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_LENGTH},
+  #else
+    {"INVALID_LENGTH", 4, 181},
+  #endif
   #ifdef RSA_R_INVALID_MESSAGE_LENGTH
     {"INVALID_MESSAGE_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_MESSAGE_LENGTH},
   #else
@@ -5880,6 +6010,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"Q_NOT_PRIME", 4, 129},
   #endif
+  #ifdef RSA_R_RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT
+    {"RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT", ERR_LIB_RSA, RSA_R_RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT},
+  #else
+    {"RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT", 4, 180},
+  #endif
   #ifdef RSA_R_RSA_OPERATIONS_NOT_SUPPORTED
     {"RSA_OPERATIONS_NOT_SUPPORTED", ERR_LIB_RSA, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED},
   #else
@@ -6680,6 +6815,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"INVALID_TICKET_KEYS_LENGTH", 20, 325},
   #endif
+  #ifdef SSL_R_LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED
+    {"LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED", ERR_LIB_SSL, SSL_R_LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED},
+  #else
+    {"LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED", 20, 333},
+  #endif
   #ifdef SSL_R_LENGTH_MISMATCH
     {"LENGTH_MISMATCH", ERR_LIB_SSL, SSL_R_LENGTH_MISMATCH},
   #else
@@ -6725,6 +6865,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"MISSING_PARAMETERS", 20, 290},
   #endif
+  #ifdef SSL_R_MISSING_PSK_KEX_MODES_EXTENSION
+    {"MISSING_PSK_KEX_MODES_EXTENSION", ERR_LIB_SSL, SSL_R_MISSING_PSK_KEX_MODES_EXTENSION},
+  #else
+    {"MISSING_PSK_KEX_MODES_EXTENSION", 20, 310},
+  #endif
   #ifdef SSL_R_MISSING_RSA_CERTIFICATE
     {"MISSING_RSA_CERTIFICATE", ERR_LIB_SSL, SSL_R_MISSING_RSA_CERTIFICATE},
   #else
@@ -6940,6 +7085,11 @@ static struct py_ssl_error_code error_codes[] = {
   #else
     {"NULL_SSL_METHOD_PASSED", 20, 196},
   #endif
+  #ifdef SSL_R_OCSP_CALLBACK_FAILURE
+    {"OCSP_CALLBACK_FAILURE", ERR_LIB_SSL, SSL_R_OCSP_CALLBACK_FAILURE},
+  #else
+    {"OCSP_CALLBACK_FAILURE", 20, 305},
+  #endif
   #ifdef SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
     {"OLD_SESSION_CIPHER_NOT_RETURNED", ERR_LIB_SSL, SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED},
   #else
diff --git a/Modules/_ssl_data_31.h b/Modules/_ssl_data_31.h
new file mode 100644
index 00000000000000..c589c501f4e948
--- /dev/null
+++ b/Modules/_ssl_data_31.h
@@ -0,0 +1,8605 @@
+/* File generated by Tools/ssl/make_ssl_data.py *//* Generated on 2023-06-01T03:04:00.275280 */
+static struct py_ssl_library_code library_codes[] = {
+#ifdef ERR_LIB_ASN1
+    {"ASN1", ERR_LIB_ASN1},
+#endif
+#ifdef ERR_LIB_ASYNC
+    {"ASYNC", ERR_LIB_ASYNC},
+#endif
+#ifdef ERR_LIB_BIO
+    {"BIO", ERR_LIB_BIO},
+#endif
+#ifdef ERR_LIB_BN
+    {"BN", ERR_LIB_BN},
+#endif
+#ifdef ERR_LIB_BUF
+    {"BUF", ERR_LIB_BUF},
+#endif
+#ifdef ERR_LIB_CMP
+    {"CMP", ERR_LIB_CMP},
+#endif
+#ifdef ERR_LIB_CMS
+    {"CMS", ERR_LIB_CMS},
+#endif
+#ifdef ERR_LIB_COMP
+    {"COMP", ERR_LIB_COMP},
+#endif
+#ifdef ERR_LIB_CONF
+    {"CONF", ERR_LIB_CONF},
+#endif
+#ifdef ERR_LIB_CRMF
+    {"CRMF", ERR_LIB_CRMF},
+#endif
+#ifdef ERR_LIB_CRYPTO
+    {"CRYPTO", ERR_LIB_CRYPTO},
+#endif
+#ifdef ERR_LIB_CT
+    {"CT", ERR_LIB_CT},
+#endif
+#ifdef ERR_LIB_DH
+    {"DH", ERR_LIB_DH},
+#endif
+#ifdef ERR_LIB_DSA
+    {"DSA", ERR_LIB_DSA},
+#endif
+#ifdef ERR_LIB_DSO
+    {"DSO", ERR_LIB_DSO},
+#endif
+#ifdef ERR_LIB_EC
+    {"EC", ERR_LIB_EC},
+#endif
+#ifdef ERR_LIB_ECDH
+    {"ECDH", ERR_LIB_ECDH},
+#endif
+#ifdef ERR_LIB_ECDSA
+    {"ECDSA", ERR_LIB_ECDSA},
+#endif
+#ifdef ERR_LIB_ENGINE
+    {"ENGINE", ERR_LIB_ENGINE},
+#endif
+#ifdef ERR_LIB_ESS
+    {"ESS", ERR_LIB_ESS},
+#endif
+#ifdef ERR_LIB_EVP
+    {"EVP", ERR_LIB_EVP},
+#endif
+#ifdef ERR_LIB_FIPS
+    {"FIPS", ERR_LIB_FIPS},
+#endif
+#ifdef ERR_LIB_HMAC
+    {"HMAC", ERR_LIB_HMAC},
+#endif
+#ifdef ERR_LIB_HTTP
+    {"HTTP", ERR_LIB_HTTP},
+#endif
+#ifdef ERR_LIB_JPAKE
+    {"JPAKE", ERR_LIB_JPAKE},
+#endif
+#ifdef ERR_LIB_KDF
+    {"KDF", ERR_LIB_KDF},
+#endif
+#ifdef ERR_LIB_MASK
+    {"MASK", ERR_LIB_MASK},
+#endif
+#ifdef ERR_LIB_METH
+    {"METH", ERR_LIB_METH},
+#endif
+#ifdef ERR_LIB_NONE
+    {"NONE", ERR_LIB_NONE},
+#endif
+#ifdef ERR_LIB_OBJ
+    {"OBJ", ERR_LIB_OBJ},
+#endif
+#ifdef ERR_LIB_OCSP
+    {"OCSP", ERR_LIB_OCSP},
+#endif
+#ifdef ERR_LIB_OFFSET
+    {"OFFSET", ERR_LIB_OFFSET},
+#endif
+#ifdef ERR_LIB_OSSL_DECODER
+    {"OSSL_DECODER", ERR_LIB_OSSL_DECODER},
+#endif
+#ifdef ERR_LIB_OSSL_ENCODER
+    {"OSSL_ENCODER", ERR_LIB_OSSL_ENCODER},
+#endif
+#ifdef ERR_LIB_OSSL_STORE
+    {"OSSL_STORE", ERR_LIB_OSSL_STORE},
+#endif
+#ifdef ERR_LIB_PEM
+    {"PEM", ERR_LIB_PEM},
+#endif
+#ifdef ERR_LIB_PKCS12
+    {"PKCS12", ERR_LIB_PKCS12},
+#endif
+#ifdef ERR_LIB_PKCS7
+    {"PKCS7", ERR_LIB_PKCS7},
+#endif
+#ifdef ERR_LIB_PROP
+    {"PROP", ERR_LIB_PROP},
+#endif
+#ifdef ERR_LIB_PROV
+    {"PROV", ERR_LIB_PROV},
+#endif
+#ifdef ERR_LIB_PROXY
+    {"PROXY", ERR_LIB_PROXY},
+#endif
+#ifdef ERR_LIB_RAND
+    {"RAND", ERR_LIB_RAND},
+#endif
+#ifdef ERR_LIB_RSA
+    {"RSA", ERR_LIB_RSA},
+#endif
+#ifdef ERR_LIB_RSAREF
+    {"RSAREF", ERR_LIB_RSAREF},
+#endif
+#ifdef ERR_LIB_SM2
+    {"SM2", ERR_LIB_SM2},
+#endif
+#ifdef ERR_LIB_SSL
+    {"SSL", ERR_LIB_SSL},
+#endif
+#ifdef ERR_LIB_SSL2
+    {"SSL2", ERR_LIB_SSL2},
+#endif
+#ifdef ERR_LIB_SSL23
+    {"SSL23", ERR_LIB_SSL23},
+#endif
+#ifdef ERR_LIB_SSL3
+    {"SSL3", ERR_LIB_SSL3},
+#endif
+#ifdef ERR_LIB_SYS
+    {"SYS", ERR_LIB_SYS},
+#endif
+#ifdef ERR_LIB_TS
+    {"TS", ERR_LIB_TS},
+#endif
+#ifdef ERR_LIB_UI
+    {"UI", ERR_LIB_UI},
+#endif
+#ifdef ERR_LIB_USER
+    {"USER", ERR_LIB_USER},
+#endif
+#ifdef ERR_LIB_X509
+    {"X509", ERR_LIB_X509},
+#endif
+#ifdef ERR_LIB_X509V3
+    {"X509V3", ERR_LIB_X509V3},
+#endif
+    { NULL }
+};
+
+
+static struct py_ssl_error_code error_codes[] = {
+  #ifdef ASN1_R_ADDING_OBJECT
+    {"ADDING_OBJECT", ERR_LIB_ASN1, ASN1_R_ADDING_OBJECT},
+  #else
+    {"ADDING_OBJECT", 13, 171},
+  #endif
+  #ifdef ASN1_R_ASN1_PARSE_ERROR
+    {"ASN1_PARSE_ERROR", ERR_LIB_ASN1, ASN1_R_ASN1_PARSE_ERROR},
+  #else
+    {"ASN1_PARSE_ERROR", 13, 203},
+  #endif
+  #ifdef ASN1_R_ASN1_SIG_PARSE_ERROR
+    {"ASN1_SIG_PARSE_ERROR", ERR_LIB_ASN1, ASN1_R_ASN1_SIG_PARSE_ERROR},
+  #else
+    {"ASN1_SIG_PARSE_ERROR", 13, 204},
+  #endif
+  #ifdef ASN1_R_AUX_ERROR
+    {"AUX_ERROR", ERR_LIB_ASN1, ASN1_R_AUX_ERROR},
+  #else
+    {"AUX_ERROR", 13, 100},
+  #endif
+  #ifdef ASN1_R_BAD_OBJECT_HEADER
+    {"BAD_OBJECT_HEADER", ERR_LIB_ASN1, ASN1_R_BAD_OBJECT_HEADER},
+  #else
+    {"BAD_OBJECT_HEADER", 13, 102},
+  #endif
+  #ifdef ASN1_R_BAD_TEMPLATE
+    {"BAD_TEMPLATE", ERR_LIB_ASN1, ASN1_R_BAD_TEMPLATE},
+  #else
+    {"BAD_TEMPLATE", 13, 230},
+  #endif
+  #ifdef ASN1_R_BMPSTRING_IS_WRONG_LENGTH
+    {"BMPSTRING_IS_WRONG_LENGTH", ERR_LIB_ASN1, ASN1_R_BMPSTRING_IS_WRONG_LENGTH},
+  #else
+    {"BMPSTRING_IS_WRONG_LENGTH", 13, 214},
+  #endif
+  #ifdef ASN1_R_BN_LIB
+    {"BN_LIB", ERR_LIB_ASN1, ASN1_R_BN_LIB},
+  #else
+    {"BN_LIB", 13, 105},
+  #endif
+  #ifdef ASN1_R_BOOLEAN_IS_WRONG_LENGTH
+    {"BOOLEAN_IS_WRONG_LENGTH", ERR_LIB_ASN1, ASN1_R_BOOLEAN_IS_WRONG_LENGTH},
+  #else
+    {"BOOLEAN_IS_WRONG_LENGTH", 13, 106},
+  #endif
+  #ifdef ASN1_R_BUFFER_TOO_SMALL
+    {"BUFFER_TOO_SMALL", ERR_LIB_ASN1, ASN1_R_BUFFER_TOO_SMALL},
+  #else
+    {"BUFFER_TOO_SMALL", 13, 107},
+  #endif
+  #ifdef ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER
+    {"CIPHER_HAS_NO_OBJECT_IDENTIFIER", ERR_LIB_ASN1, ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER},
+  #else
+    {"CIPHER_HAS_NO_OBJECT_IDENTIFIER", 13, 108},
+  #endif
+  #ifdef ASN1_R_CONTEXT_NOT_INITIALISED
+    {"CONTEXT_NOT_INITIALISED", ERR_LIB_ASN1, ASN1_R_CONTEXT_NOT_INITIALISED},
+  #else
+    {"CONTEXT_NOT_INITIALISED", 13, 217},
+  #endif
+  #ifdef ASN1_R_DATA_IS_WRONG
+    {"DATA_IS_WRONG", ERR_LIB_ASN1, ASN1_R_DATA_IS_WRONG},
+  #else
+    {"DATA_IS_WRONG", 13, 109},
+  #endif
+  #ifdef ASN1_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_ASN1, ASN1_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 13, 110},
+  #endif
+  #ifdef ASN1_R_DEPTH_EXCEEDED
+    {"DEPTH_EXCEEDED", ERR_LIB_ASN1, ASN1_R_DEPTH_EXCEEDED},
+  #else
+    {"DEPTH_EXCEEDED", 13, 174},
+  #endif
+  #ifdef ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED
+    {"DIGEST_AND_KEY_TYPE_NOT_SUPPORTED", ERR_LIB_ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED},
+  #else
+    {"DIGEST_AND_KEY_TYPE_NOT_SUPPORTED", 13, 198},
+  #endif
+  #ifdef ASN1_R_ENCODE_ERROR
+    {"ENCODE_ERROR", ERR_LIB_ASN1, ASN1_R_ENCODE_ERROR},
+  #else
+    {"ENCODE_ERROR", 13, 112},
+  #endif
+  #ifdef ASN1_R_ERROR_GETTING_TIME
+    {"ERROR_GETTING_TIME", ERR_LIB_ASN1, ASN1_R_ERROR_GETTING_TIME},
+  #else
+    {"ERROR_GETTING_TIME", 13, 173},
+  #endif
+  #ifdef ASN1_R_ERROR_LOADING_SECTION
+    {"ERROR_LOADING_SECTION", ERR_LIB_ASN1, ASN1_R_ERROR_LOADING_SECTION},
+  #else
+    {"ERROR_LOADING_SECTION", 13, 172},
+  #endif
+  #ifdef ASN1_R_ERROR_SETTING_CIPHER_PARAMS
+    {"ERROR_SETTING_CIPHER_PARAMS", ERR_LIB_ASN1, ASN1_R_ERROR_SETTING_CIPHER_PARAMS},
+  #else
+    {"ERROR_SETTING_CIPHER_PARAMS", 13, 114},
+  #endif
+  #ifdef ASN1_R_EXPECTING_AN_INTEGER
+    {"EXPECTING_AN_INTEGER", ERR_LIB_ASN1, ASN1_R_EXPECTING_AN_INTEGER},
+  #else
+    {"EXPECTING_AN_INTEGER", 13, 115},
+  #endif
+  #ifdef ASN1_R_EXPECTING_AN_OBJECT
+    {"EXPECTING_AN_OBJECT", ERR_LIB_ASN1, ASN1_R_EXPECTING_AN_OBJECT},
+  #else
+    {"EXPECTING_AN_OBJECT", 13, 116},
+  #endif
+  #ifdef ASN1_R_EXPLICIT_LENGTH_MISMATCH
+    {"EXPLICIT_LENGTH_MISMATCH", ERR_LIB_ASN1, ASN1_R_EXPLICIT_LENGTH_MISMATCH},
+  #else
+    {"EXPLICIT_LENGTH_MISMATCH", 13, 119},
+  #endif
+  #ifdef ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED
+    {"EXPLICIT_TAG_NOT_CONSTRUCTED", ERR_LIB_ASN1, ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED},
+  #else
+    {"EXPLICIT_TAG_NOT_CONSTRUCTED", 13, 120},
+  #endif
+  #ifdef ASN1_R_FIELD_MISSING
+    {"FIELD_MISSING", ERR_LIB_ASN1, ASN1_R_FIELD_MISSING},
+  #else
+    {"FIELD_MISSING", 13, 121},
+  #endif
+  #ifdef ASN1_R_FIRST_NUM_TOO_LARGE
+    {"FIRST_NUM_TOO_LARGE", ERR_LIB_ASN1, ASN1_R_FIRST_NUM_TOO_LARGE},
+  #else
+    {"FIRST_NUM_TOO_LARGE", 13, 122},
+  #endif
+  #ifdef ASN1_R_HEADER_TOO_LONG
+    {"HEADER_TOO_LONG", ERR_LIB_ASN1, ASN1_R_HEADER_TOO_LONG},
+  #else
+    {"HEADER_TOO_LONG", 13, 123},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_BITSTRING_FORMAT
+    {"ILLEGAL_BITSTRING_FORMAT", ERR_LIB_ASN1, ASN1_R_ILLEGAL_BITSTRING_FORMAT},
+  #else
+    {"ILLEGAL_BITSTRING_FORMAT", 13, 175},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_BOOLEAN
+    {"ILLEGAL_BOOLEAN", ERR_LIB_ASN1, ASN1_R_ILLEGAL_BOOLEAN},
+  #else
+    {"ILLEGAL_BOOLEAN", 13, 176},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_CHARACTERS
+    {"ILLEGAL_CHARACTERS", ERR_LIB_ASN1, ASN1_R_ILLEGAL_CHARACTERS},
+  #else
+    {"ILLEGAL_CHARACTERS", 13, 124},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_FORMAT
+    {"ILLEGAL_FORMAT", ERR_LIB_ASN1, ASN1_R_ILLEGAL_FORMAT},
+  #else
+    {"ILLEGAL_FORMAT", 13, 177},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_HEX
+    {"ILLEGAL_HEX", ERR_LIB_ASN1, ASN1_R_ILLEGAL_HEX},
+  #else
+    {"ILLEGAL_HEX", 13, 178},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_IMPLICIT_TAG
+    {"ILLEGAL_IMPLICIT_TAG", ERR_LIB_ASN1, ASN1_R_ILLEGAL_IMPLICIT_TAG},
+  #else
+    {"ILLEGAL_IMPLICIT_TAG", 13, 179},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_INTEGER
+    {"ILLEGAL_INTEGER", ERR_LIB_ASN1, ASN1_R_ILLEGAL_INTEGER},
+  #else
+    {"ILLEGAL_INTEGER", 13, 180},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_NEGATIVE_VALUE
+    {"ILLEGAL_NEGATIVE_VALUE", ERR_LIB_ASN1, ASN1_R_ILLEGAL_NEGATIVE_VALUE},
+  #else
+    {"ILLEGAL_NEGATIVE_VALUE", 13, 226},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_NESTED_TAGGING
+    {"ILLEGAL_NESTED_TAGGING", ERR_LIB_ASN1, ASN1_R_ILLEGAL_NESTED_TAGGING},
+  #else
+    {"ILLEGAL_NESTED_TAGGING", 13, 181},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_NULL
+    {"ILLEGAL_NULL", ERR_LIB_ASN1, ASN1_R_ILLEGAL_NULL},
+  #else
+    {"ILLEGAL_NULL", 13, 125},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_NULL_VALUE
+    {"ILLEGAL_NULL_VALUE", ERR_LIB_ASN1, ASN1_R_ILLEGAL_NULL_VALUE},
+  #else
+    {"ILLEGAL_NULL_VALUE", 13, 182},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_OBJECT
+    {"ILLEGAL_OBJECT", ERR_LIB_ASN1, ASN1_R_ILLEGAL_OBJECT},
+  #else
+    {"ILLEGAL_OBJECT", 13, 183},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_OPTIONAL_ANY
+    {"ILLEGAL_OPTIONAL_ANY", ERR_LIB_ASN1, ASN1_R_ILLEGAL_OPTIONAL_ANY},
+  #else
+    {"ILLEGAL_OPTIONAL_ANY", 13, 126},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE
+    {"ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE", ERR_LIB_ASN1, ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE},
+  #else
+    {"ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE", 13, 170},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_PADDING
+    {"ILLEGAL_PADDING", ERR_LIB_ASN1, ASN1_R_ILLEGAL_PADDING},
+  #else
+    {"ILLEGAL_PADDING", 13, 221},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_TAGGED_ANY
+    {"ILLEGAL_TAGGED_ANY", ERR_LIB_ASN1, ASN1_R_ILLEGAL_TAGGED_ANY},
+  #else
+    {"ILLEGAL_TAGGED_ANY", 13, 127},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_TIME_VALUE
+    {"ILLEGAL_TIME_VALUE", ERR_LIB_ASN1, ASN1_R_ILLEGAL_TIME_VALUE},
+  #else
+    {"ILLEGAL_TIME_VALUE", 13, 184},
+  #endif
+  #ifdef ASN1_R_ILLEGAL_ZERO_CONTENT
+    {"ILLEGAL_ZERO_CONTENT", ERR_LIB_ASN1, ASN1_R_ILLEGAL_ZERO_CONTENT},
+  #else
+    {"ILLEGAL_ZERO_CONTENT", 13, 222},
+  #endif
+  #ifdef ASN1_R_INTEGER_NOT_ASCII_FORMAT
+    {"INTEGER_NOT_ASCII_FORMAT", ERR_LIB_ASN1, ASN1_R_INTEGER_NOT_ASCII_FORMAT},
+  #else
+    {"INTEGER_NOT_ASCII_FORMAT", 13, 185},
+  #endif
+  #ifdef ASN1_R_INTEGER_TOO_LARGE_FOR_LONG
+    {"INTEGER_TOO_LARGE_FOR_LONG", ERR_LIB_ASN1, ASN1_R_INTEGER_TOO_LARGE_FOR_LONG},
+  #else
+    {"INTEGER_TOO_LARGE_FOR_LONG", 13, 128},
+  #endif
+  #ifdef ASN1_R_INVALID_BIT_STRING_BITS_LEFT
+    {"INVALID_BIT_STRING_BITS_LEFT", ERR_LIB_ASN1, ASN1_R_INVALID_BIT_STRING_BITS_LEFT},
+  #else
+    {"INVALID_BIT_STRING_BITS_LEFT", 13, 220},
+  #endif
+  #ifdef ASN1_R_INVALID_BMPSTRING_LENGTH
+    {"INVALID_BMPSTRING_LENGTH", ERR_LIB_ASN1, ASN1_R_INVALID_BMPSTRING_LENGTH},
+  #else
+    {"INVALID_BMPSTRING_LENGTH", 13, 129},
+  #endif
+  #ifdef ASN1_R_INVALID_DIGIT
+    {"INVALID_DIGIT", ERR_LIB_ASN1, ASN1_R_INVALID_DIGIT},
+  #else
+    {"INVALID_DIGIT", 13, 130},
+  #endif
+  #ifdef ASN1_R_INVALID_MIME_TYPE
+    {"INVALID_MIME_TYPE", ERR_LIB_ASN1, ASN1_R_INVALID_MIME_TYPE},
+  #else
+    {"INVALID_MIME_TYPE", 13, 205},
+  #endif
+  #ifdef ASN1_R_INVALID_MODIFIER
+    {"INVALID_MODIFIER", ERR_LIB_ASN1, ASN1_R_INVALID_MODIFIER},
+  #else
+    {"INVALID_MODIFIER", 13, 186},
+  #endif
+  #ifdef ASN1_R_INVALID_NUMBER
+    {"INVALID_NUMBER", ERR_LIB_ASN1, ASN1_R_INVALID_NUMBER},
+  #else
+    {"INVALID_NUMBER", 13, 187},
+  #endif
+  #ifdef ASN1_R_INVALID_OBJECT_ENCODING
+    {"INVALID_OBJECT_ENCODING", ERR_LIB_ASN1, ASN1_R_INVALID_OBJECT_ENCODING},
+  #else
+    {"INVALID_OBJECT_ENCODING", 13, 216},
+  #endif
+  #ifdef ASN1_R_INVALID_SCRYPT_PARAMETERS
+    {"INVALID_SCRYPT_PARAMETERS", ERR_LIB_ASN1, ASN1_R_INVALID_SCRYPT_PARAMETERS},
+  #else
+    {"INVALID_SCRYPT_PARAMETERS", 13, 227},
+  #endif
+  #ifdef ASN1_R_INVALID_SEPARATOR
+    {"INVALID_SEPARATOR", ERR_LIB_ASN1, ASN1_R_INVALID_SEPARATOR},
+  #else
+    {"INVALID_SEPARATOR", 13, 131},
+  #endif
+  #ifdef ASN1_R_INVALID_STRING_TABLE_VALUE
+    {"INVALID_STRING_TABLE_VALUE", ERR_LIB_ASN1, ASN1_R_INVALID_STRING_TABLE_VALUE},
+  #else
+    {"INVALID_STRING_TABLE_VALUE", 13, 218},
+  #endif
+  #ifdef ASN1_R_INVALID_UNIVERSALSTRING_LENGTH
+    {"INVALID_UNIVERSALSTRING_LENGTH", ERR_LIB_ASN1, ASN1_R_INVALID_UNIVERSALSTRING_LENGTH},
+  #else
+    {"INVALID_UNIVERSALSTRING_LENGTH", 13, 133},
+  #endif
+  #ifdef ASN1_R_INVALID_UTF8STRING
+    {"INVALID_UTF8STRING", ERR_LIB_ASN1, ASN1_R_INVALID_UTF8STRING},
+  #else
+    {"INVALID_UTF8STRING", 13, 134},
+  #endif
+  #ifdef ASN1_R_INVALID_VALUE
+    {"INVALID_VALUE", ERR_LIB_ASN1, ASN1_R_INVALID_VALUE},
+  #else
+    {"INVALID_VALUE", 13, 219},
+  #endif
+  #ifdef ASN1_R_LENGTH_TOO_LONG
+    {"LENGTH_TOO_LONG", ERR_LIB_ASN1, ASN1_R_LENGTH_TOO_LONG},
+  #else
+    {"LENGTH_TOO_LONG", 13, 231},
+  #endif
+  #ifdef ASN1_R_LIST_ERROR
+    {"LIST_ERROR", ERR_LIB_ASN1, ASN1_R_LIST_ERROR},
+  #else
+    {"LIST_ERROR", 13, 188},
+  #endif
+  #ifdef ASN1_R_MIME_NO_CONTENT_TYPE
+    {"MIME_NO_CONTENT_TYPE", ERR_LIB_ASN1, ASN1_R_MIME_NO_CONTENT_TYPE},
+  #else
+    {"MIME_NO_CONTENT_TYPE", 13, 206},
+  #endif
+  #ifdef ASN1_R_MIME_PARSE_ERROR
+    {"MIME_PARSE_ERROR", ERR_LIB_ASN1, ASN1_R_MIME_PARSE_ERROR},
+  #else
+    {"MIME_PARSE_ERROR", 13, 207},
+  #endif
+  #ifdef ASN1_R_MIME_SIG_PARSE_ERROR
+    {"MIME_SIG_PARSE_ERROR", ERR_LIB_ASN1, ASN1_R_MIME_SIG_PARSE_ERROR},
+  #else
+    {"MIME_SIG_PARSE_ERROR", 13, 208},
+  #endif
+  #ifdef ASN1_R_MISSING_EOC
+    {"MISSING_EOC", ERR_LIB_ASN1, ASN1_R_MISSING_EOC},
+  #else
+    {"MISSING_EOC", 13, 137},
+  #endif
+  #ifdef ASN1_R_MISSING_SECOND_NUMBER
+    {"MISSING_SECOND_NUMBER", ERR_LIB_ASN1, ASN1_R_MISSING_SECOND_NUMBER},
+  #else
+    {"MISSING_SECOND_NUMBER", 13, 138},
+  #endif
+  #ifdef ASN1_R_MISSING_VALUE
+    {"MISSING_VALUE", ERR_LIB_ASN1, ASN1_R_MISSING_VALUE},
+  #else
+    {"MISSING_VALUE", 13, 189},
+  #endif
+  #ifdef ASN1_R_MSTRING_NOT_UNIVERSAL
+    {"MSTRING_NOT_UNIVERSAL", ERR_LIB_ASN1, ASN1_R_MSTRING_NOT_UNIVERSAL},
+  #else
+    {"MSTRING_NOT_UNIVERSAL", 13, 139},
+  #endif
+  #ifdef ASN1_R_MSTRING_WRONG_TAG
+    {"MSTRING_WRONG_TAG", ERR_LIB_ASN1, ASN1_R_MSTRING_WRONG_TAG},
+  #else
+    {"MSTRING_WRONG_TAG", 13, 140},
+  #endif
+  #ifdef ASN1_R_NESTED_ASN1_STRING
+    {"NESTED_ASN1_STRING", ERR_LIB_ASN1, ASN1_R_NESTED_ASN1_STRING},
+  #else
+    {"NESTED_ASN1_STRING", 13, 197},
+  #endif
+  #ifdef ASN1_R_NESTED_TOO_DEEP
+    {"NESTED_TOO_DEEP", ERR_LIB_ASN1, ASN1_R_NESTED_TOO_DEEP},
+  #else
+    {"NESTED_TOO_DEEP", 13, 201},
+  #endif
+  #ifdef ASN1_R_NON_HEX_CHARACTERS
+    {"NON_HEX_CHARACTERS", ERR_LIB_ASN1, ASN1_R_NON_HEX_CHARACTERS},
+  #else
+    {"NON_HEX_CHARACTERS", 13, 141},
+  #endif
+  #ifdef ASN1_R_NOT_ASCII_FORMAT
+    {"NOT_ASCII_FORMAT", ERR_LIB_ASN1, ASN1_R_NOT_ASCII_FORMAT},
+  #else
+    {"NOT_ASCII_FORMAT", 13, 190},
+  #endif
+  #ifdef ASN1_R_NOT_ENOUGH_DATA
+    {"NOT_ENOUGH_DATA", ERR_LIB_ASN1, ASN1_R_NOT_ENOUGH_DATA},
+  #else
+    {"NOT_ENOUGH_DATA", 13, 142},
+  #endif
+  #ifdef ASN1_R_NO_CONTENT_TYPE
+    {"NO_CONTENT_TYPE", ERR_LIB_ASN1, ASN1_R_NO_CONTENT_TYPE},
+  #else
+    {"NO_CONTENT_TYPE", 13, 209},
+  #endif
+  #ifdef ASN1_R_NO_MATCHING_CHOICE_TYPE
+    {"NO_MATCHING_CHOICE_TYPE", ERR_LIB_ASN1, ASN1_R_NO_MATCHING_CHOICE_TYPE},
+  #else
+    {"NO_MATCHING_CHOICE_TYPE", 13, 143},
+  #endif
+  #ifdef ASN1_R_NO_MULTIPART_BODY_FAILURE
+    {"NO_MULTIPART_BODY_FAILURE", ERR_LIB_ASN1, ASN1_R_NO_MULTIPART_BODY_FAILURE},
+  #else
+    {"NO_MULTIPART_BODY_FAILURE", 13, 210},
+  #endif
+  #ifdef ASN1_R_NO_MULTIPART_BOUNDARY
+    {"NO_MULTIPART_BOUNDARY", ERR_LIB_ASN1, ASN1_R_NO_MULTIPART_BOUNDARY},
+  #else
+    {"NO_MULTIPART_BOUNDARY", 13, 211},
+  #endif
+  #ifdef ASN1_R_NO_SIG_CONTENT_TYPE
+    {"NO_SIG_CONTENT_TYPE", ERR_LIB_ASN1, ASN1_R_NO_SIG_CONTENT_TYPE},
+  #else
+    {"NO_SIG_CONTENT_TYPE", 13, 212},
+  #endif
+  #ifdef ASN1_R_NULL_IS_WRONG_LENGTH
+    {"NULL_IS_WRONG_LENGTH", ERR_LIB_ASN1, ASN1_R_NULL_IS_WRONG_LENGTH},
+  #else
+    {"NULL_IS_WRONG_LENGTH", 13, 144},
+  #endif
+  #ifdef ASN1_R_OBJECT_NOT_ASCII_FORMAT
+    {"OBJECT_NOT_ASCII_FORMAT", ERR_LIB_ASN1, ASN1_R_OBJECT_NOT_ASCII_FORMAT},
+  #else
+    {"OBJECT_NOT_ASCII_FORMAT", 13, 191},
+  #endif
+  #ifdef ASN1_R_ODD_NUMBER_OF_CHARS
+    {"ODD_NUMBER_OF_CHARS", ERR_LIB_ASN1, ASN1_R_ODD_NUMBER_OF_CHARS},
+  #else
+    {"ODD_NUMBER_OF_CHARS", 13, 145},
+  #endif
+  #ifdef ASN1_R_SECOND_NUMBER_TOO_LARGE
+    {"SECOND_NUMBER_TOO_LARGE", ERR_LIB_ASN1, ASN1_R_SECOND_NUMBER_TOO_LARGE},
+  #else
+    {"SECOND_NUMBER_TOO_LARGE", 13, 147},
+  #endif
+  #ifdef ASN1_R_SEQUENCE_LENGTH_MISMATCH
+    {"SEQUENCE_LENGTH_MISMATCH", ERR_LIB_ASN1, ASN1_R_SEQUENCE_LENGTH_MISMATCH},
+  #else
+    {"SEQUENCE_LENGTH_MISMATCH", 13, 148},
+  #endif
+  #ifdef ASN1_R_SEQUENCE_NOT_CONSTRUCTED
+    {"SEQUENCE_NOT_CONSTRUCTED", ERR_LIB_ASN1, ASN1_R_SEQUENCE_NOT_CONSTRUCTED},
+  #else
+    {"SEQUENCE_NOT_CONSTRUCTED", 13, 149},
+  #endif
+  #ifdef ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG
+    {"SEQUENCE_OR_SET_NEEDS_CONFIG", ERR_LIB_ASN1, ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG},
+  #else
+    {"SEQUENCE_OR_SET_NEEDS_CONFIG", 13, 192},
+  #endif
+  #ifdef ASN1_R_SHORT_LINE
+    {"SHORT_LINE", ERR_LIB_ASN1, ASN1_R_SHORT_LINE},
+  #else
+    {"SHORT_LINE", 13, 150},
+  #endif
+  #ifdef ASN1_R_SIG_INVALID_MIME_TYPE
+    {"SIG_INVALID_MIME_TYPE", ERR_LIB_ASN1, ASN1_R_SIG_INVALID_MIME_TYPE},
+  #else
+    {"SIG_INVALID_MIME_TYPE", 13, 213},
+  #endif
+  #ifdef ASN1_R_STREAMING_NOT_SUPPORTED
+    {"STREAMING_NOT_SUPPORTED", ERR_LIB_ASN1, ASN1_R_STREAMING_NOT_SUPPORTED},
+  #else
+    {"STREAMING_NOT_SUPPORTED", 13, 202},
+  #endif
+  #ifdef ASN1_R_STRING_TOO_LONG
+    {"STRING_TOO_LONG", ERR_LIB_ASN1, ASN1_R_STRING_TOO_LONG},
+  #else
+    {"STRING_TOO_LONG", 13, 151},
+  #endif
+  #ifdef ASN1_R_STRING_TOO_SHORT
+    {"STRING_TOO_SHORT", ERR_LIB_ASN1, ASN1_R_STRING_TOO_SHORT},
+  #else
+    {"STRING_TOO_SHORT", 13, 152},
+  #endif
+  #ifdef ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD
+    {"THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD", ERR_LIB_ASN1, ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD},
+  #else
+    {"THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD", 13, 154},
+  #endif
+  #ifdef ASN1_R_TIME_NOT_ASCII_FORMAT
+    {"TIME_NOT_ASCII_FORMAT", ERR_LIB_ASN1, ASN1_R_TIME_NOT_ASCII_FORMAT},
+  #else
+    {"TIME_NOT_ASCII_FORMAT", 13, 193},
+  #endif
+  #ifdef ASN1_R_TOO_LARGE
+    {"TOO_LARGE", ERR_LIB_ASN1, ASN1_R_TOO_LARGE},
+  #else
+    {"TOO_LARGE", 13, 223},
+  #endif
+  #ifdef ASN1_R_TOO_LONG
+    {"TOO_LONG", ERR_LIB_ASN1, ASN1_R_TOO_LONG},
+  #else
+    {"TOO_LONG", 13, 155},
+  #endif
+  #ifdef ASN1_R_TOO_SMALL
+    {"TOO_SMALL", ERR_LIB_ASN1, ASN1_R_TOO_SMALL},
+  #else
+    {"TOO_SMALL", 13, 224},
+  #endif
+  #ifdef ASN1_R_TYPE_NOT_CONSTRUCTED
+    {"TYPE_NOT_CONSTRUCTED", ERR_LIB_ASN1, ASN1_R_TYPE_NOT_CONSTRUCTED},
+  #else
+    {"TYPE_NOT_CONSTRUCTED", 13, 156},
+  #endif
+  #ifdef ASN1_R_TYPE_NOT_PRIMITIVE
+    {"TYPE_NOT_PRIMITIVE", ERR_LIB_ASN1, ASN1_R_TYPE_NOT_PRIMITIVE},
+  #else
+    {"TYPE_NOT_PRIMITIVE", 13, 195},
+  #endif
+  #ifdef ASN1_R_UNEXPECTED_EOC
+    {"UNEXPECTED_EOC", ERR_LIB_ASN1, ASN1_R_UNEXPECTED_EOC},
+  #else
+    {"UNEXPECTED_EOC", 13, 159},
+  #endif
+  #ifdef ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH
+    {"UNIVERSALSTRING_IS_WRONG_LENGTH", ERR_LIB_ASN1, ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH},
+  #else
+    {"UNIVERSALSTRING_IS_WRONG_LENGTH", 13, 215},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_DIGEST
+    {"UNKNOWN_DIGEST", ERR_LIB_ASN1, ASN1_R_UNKNOWN_DIGEST},
+  #else
+    {"UNKNOWN_DIGEST", 13, 229},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_FORMAT
+    {"UNKNOWN_FORMAT", ERR_LIB_ASN1, ASN1_R_UNKNOWN_FORMAT},
+  #else
+    {"UNKNOWN_FORMAT", 13, 160},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM
+    {"UNKNOWN_MESSAGE_DIGEST_ALGORITHM", ERR_LIB_ASN1, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM},
+  #else
+    {"UNKNOWN_MESSAGE_DIGEST_ALGORITHM", 13, 161},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_OBJECT_TYPE
+    {"UNKNOWN_OBJECT_TYPE", ERR_LIB_ASN1, ASN1_R_UNKNOWN_OBJECT_TYPE},
+  #else
+    {"UNKNOWN_OBJECT_TYPE", 13, 162},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE
+    {"UNKNOWN_PUBLIC_KEY_TYPE", ERR_LIB_ASN1, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE},
+  #else
+    {"UNKNOWN_PUBLIC_KEY_TYPE", 13, 163},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM
+    {"UNKNOWN_SIGNATURE_ALGORITHM", ERR_LIB_ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM},
+  #else
+    {"UNKNOWN_SIGNATURE_ALGORITHM", 13, 199},
+  #endif
+  #ifdef ASN1_R_UNKNOWN_TAG
+    {"UNKNOWN_TAG", ERR_LIB_ASN1, ASN1_R_UNKNOWN_TAG},
+  #else
+    {"UNKNOWN_TAG", 13, 194},
+  #endif
+  #ifdef ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE
+    {"UNSUPPORTED_ANY_DEFINED_BY_TYPE", ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE},
+  #else
+    {"UNSUPPORTED_ANY_DEFINED_BY_TYPE", 13, 164},
+  #endif
+  #ifdef ASN1_R_UNSUPPORTED_CIPHER
+    {"UNSUPPORTED_CIPHER", ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_CIPHER},
+  #else
+    {"UNSUPPORTED_CIPHER", 13, 228},
+  #endif
+  #ifdef ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE
+    {"UNSUPPORTED_PUBLIC_KEY_TYPE", ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE},
+  #else
+    {"UNSUPPORTED_PUBLIC_KEY_TYPE", 13, 167},
+  #endif
+  #ifdef ASN1_R_UNSUPPORTED_TYPE
+    {"UNSUPPORTED_TYPE", ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_TYPE},
+  #else
+    {"UNSUPPORTED_TYPE", 13, 196},
+  #endif
+  #ifdef ASN1_R_WRONG_INTEGER_TYPE
+    {"WRONG_INTEGER_TYPE", ERR_LIB_ASN1, ASN1_R_WRONG_INTEGER_TYPE},
+  #else
+    {"WRONG_INTEGER_TYPE", 13, 225},
+  #endif
+  #ifdef ASN1_R_WRONG_PUBLIC_KEY_TYPE
+    {"WRONG_PUBLIC_KEY_TYPE", ERR_LIB_ASN1, ASN1_R_WRONG_PUBLIC_KEY_TYPE},
+  #else
+    {"WRONG_PUBLIC_KEY_TYPE", 13, 200},
+  #endif
+  #ifdef ASN1_R_WRONG_TAG
+    {"WRONG_TAG", ERR_LIB_ASN1, ASN1_R_WRONG_TAG},
+  #else
+    {"WRONG_TAG", 13, 168},
+  #endif
+  #ifdef ASYNC_R_FAILED_TO_SET_POOL
+    {"FAILED_TO_SET_POOL", ERR_LIB_ASYNC, ASYNC_R_FAILED_TO_SET_POOL},
+  #else
+    {"FAILED_TO_SET_POOL", 51, 101},
+  #endif
+  #ifdef ASYNC_R_FAILED_TO_SWAP_CONTEXT
+    {"FAILED_TO_SWAP_CONTEXT", ERR_LIB_ASYNC, ASYNC_R_FAILED_TO_SWAP_CONTEXT},
+  #else
+    {"FAILED_TO_SWAP_CONTEXT", 51, 102},
+  #endif
+  #ifdef ASYNC_R_INIT_FAILED
+    {"INIT_FAILED", ERR_LIB_ASYNC, ASYNC_R_INIT_FAILED},
+  #else
+    {"INIT_FAILED", 51, 105},
+  #endif
+  #ifdef ASYNC_R_INVALID_POOL_SIZE
+    {"INVALID_POOL_SIZE", ERR_LIB_ASYNC, ASYNC_R_INVALID_POOL_SIZE},
+  #else
+    {"INVALID_POOL_SIZE", 51, 103},
+  #endif
+  #ifdef BIO_R_ACCEPT_ERROR
+    {"ACCEPT_ERROR", ERR_LIB_BIO, BIO_R_ACCEPT_ERROR},
+  #else
+    {"ACCEPT_ERROR", 32, 100},
+  #endif
+  #ifdef BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET
+    {"ADDRINFO_ADDR_IS_NOT_AF_INET", ERR_LIB_BIO, BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET},
+  #else
+    {"ADDRINFO_ADDR_IS_NOT_AF_INET", 32, 141},
+  #endif
+  #ifdef BIO_R_AMBIGUOUS_HOST_OR_SERVICE
+    {"AMBIGUOUS_HOST_OR_SERVICE", ERR_LIB_BIO, BIO_R_AMBIGUOUS_HOST_OR_SERVICE},
+  #else
+    {"AMBIGUOUS_HOST_OR_SERVICE", 32, 129},
+  #endif
+  #ifdef BIO_R_BAD_FOPEN_MODE
+    {"BAD_FOPEN_MODE", ERR_LIB_BIO, BIO_R_BAD_FOPEN_MODE},
+  #else
+    {"BAD_FOPEN_MODE", 32, 101},
+  #endif
+  #ifdef BIO_R_BROKEN_PIPE
+    {"BROKEN_PIPE", ERR_LIB_BIO, BIO_R_BROKEN_PIPE},
+  #else
+    {"BROKEN_PIPE", 32, 124},
+  #endif
+  #ifdef BIO_R_CONNECT_ERROR
+    {"CONNECT_ERROR", ERR_LIB_BIO, BIO_R_CONNECT_ERROR},
+  #else
+    {"CONNECT_ERROR", 32, 103},
+  #endif
+  #ifdef BIO_R_CONNECT_TIMEOUT
+    {"CONNECT_TIMEOUT", ERR_LIB_BIO, BIO_R_CONNECT_TIMEOUT},
+  #else
+    {"CONNECT_TIMEOUT", 32, 147},
+  #endif
+  #ifdef BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET
+    {"GETHOSTBYNAME_ADDR_IS_NOT_AF_INET", ERR_LIB_BIO, BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET},
+  #else
+    {"GETHOSTBYNAME_ADDR_IS_NOT_AF_INET", 32, 107},
+  #endif
+  #ifdef BIO_R_GETSOCKNAME_ERROR
+    {"GETSOCKNAME_ERROR", ERR_LIB_BIO, BIO_R_GETSOCKNAME_ERROR},
+  #else
+    {"GETSOCKNAME_ERROR", 32, 132},
+  #endif
+  #ifdef BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS
+    {"GETSOCKNAME_TRUNCATED_ADDRESS", ERR_LIB_BIO, BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS},
+  #else
+    {"GETSOCKNAME_TRUNCATED_ADDRESS", 32, 133},
+  #endif
+  #ifdef BIO_R_GETTING_SOCKTYPE
+    {"GETTING_SOCKTYPE", ERR_LIB_BIO, BIO_R_GETTING_SOCKTYPE},
+  #else
+    {"GETTING_SOCKTYPE", 32, 134},
+  #endif
+  #ifdef BIO_R_INVALID_ARGUMENT
+    {"INVALID_ARGUMENT", ERR_LIB_BIO, BIO_R_INVALID_ARGUMENT},
+  #else
+    {"INVALID_ARGUMENT", 32, 125},
+  #endif
+  #ifdef BIO_R_INVALID_SOCKET
+    {"INVALID_SOCKET", ERR_LIB_BIO, BIO_R_INVALID_SOCKET},
+  #else
+    {"INVALID_SOCKET", 32, 135},
+  #endif
+  #ifdef BIO_R_IN_USE
+    {"IN_USE", ERR_LIB_BIO, BIO_R_IN_USE},
+  #else
+    {"IN_USE", 32, 123},
+  #endif
+  #ifdef BIO_R_LENGTH_TOO_LONG
+    {"LENGTH_TOO_LONG", ERR_LIB_BIO, BIO_R_LENGTH_TOO_LONG},
+  #else
+    {"LENGTH_TOO_LONG", 32, 102},
+  #endif
+  #ifdef BIO_R_LISTEN_V6_ONLY
+    {"LISTEN_V6_ONLY", ERR_LIB_BIO, BIO_R_LISTEN_V6_ONLY},
+  #else
+    {"LISTEN_V6_ONLY", 32, 136},
+  #endif
+  #ifdef BIO_R_LOOKUP_RETURNED_NOTHING
+    {"LOOKUP_RETURNED_NOTHING", ERR_LIB_BIO, BIO_R_LOOKUP_RETURNED_NOTHING},
+  #else
+    {"LOOKUP_RETURNED_NOTHING", 32, 142},
+  #endif
+  #ifdef BIO_R_MALFORMED_HOST_OR_SERVICE
+    {"MALFORMED_HOST_OR_SERVICE", ERR_LIB_BIO, BIO_R_MALFORMED_HOST_OR_SERVICE},
+  #else
+    {"MALFORMED_HOST_OR_SERVICE", 32, 130},
+  #endif
+  #ifdef BIO_R_NBIO_CONNECT_ERROR
+    {"NBIO_CONNECT_ERROR", ERR_LIB_BIO, BIO_R_NBIO_CONNECT_ERROR},
+  #else
+    {"NBIO_CONNECT_ERROR", 32, 110},
+  #endif
+  #ifdef BIO_R_NO_ACCEPT_ADDR_OR_SERVICE_SPECIFIED
+    {"NO_ACCEPT_ADDR_OR_SERVICE_SPECIFIED", ERR_LIB_BIO, BIO_R_NO_ACCEPT_ADDR_OR_SERVICE_SPECIFIED},
+  #else
+    {"NO_ACCEPT_ADDR_OR_SERVICE_SPECIFIED", 32, 143},
+  #endif
+  #ifdef BIO_R_NO_HOSTNAME_OR_SERVICE_SPECIFIED
+    {"NO_HOSTNAME_OR_SERVICE_SPECIFIED", ERR_LIB_BIO, BIO_R_NO_HOSTNAME_OR_SERVICE_SPECIFIED},
+  #else
+    {"NO_HOSTNAME_OR_SERVICE_SPECIFIED", 32, 144},
+  #endif
+  #ifdef BIO_R_NO_PORT_DEFINED
+    {"NO_PORT_DEFINED", ERR_LIB_BIO, BIO_R_NO_PORT_DEFINED},
+  #else
+    {"NO_PORT_DEFINED", 32, 113},
+  #endif
+  #ifdef BIO_R_NO_SUCH_FILE
+    {"NO_SUCH_FILE", ERR_LIB_BIO, BIO_R_NO_SUCH_FILE},
+  #else
+    {"NO_SUCH_FILE", 32, 128},
+  #endif
+  #ifdef BIO_R_TRANSFER_ERROR
+    {"TRANSFER_ERROR", ERR_LIB_BIO, BIO_R_TRANSFER_ERROR},
+  #else
+    {"TRANSFER_ERROR", 32, 104},
+  #endif
+  #ifdef BIO_R_TRANSFER_TIMEOUT
+    {"TRANSFER_TIMEOUT", ERR_LIB_BIO, BIO_R_TRANSFER_TIMEOUT},
+  #else
+    {"TRANSFER_TIMEOUT", 32, 105},
+  #endif
+  #ifdef BIO_R_UNABLE_TO_BIND_SOCKET
+    {"UNABLE_TO_BIND_SOCKET", ERR_LIB_BIO, BIO_R_UNABLE_TO_BIND_SOCKET},
+  #else
+    {"UNABLE_TO_BIND_SOCKET", 32, 117},
+  #endif
+  #ifdef BIO_R_UNABLE_TO_CREATE_SOCKET
+    {"UNABLE_TO_CREATE_SOCKET", ERR_LIB_BIO, BIO_R_UNABLE_TO_CREATE_SOCKET},
+  #else
+    {"UNABLE_TO_CREATE_SOCKET", 32, 118},
+  #endif
+  #ifdef BIO_R_UNABLE_TO_KEEPALIVE
+    {"UNABLE_TO_KEEPALIVE", ERR_LIB_BIO, BIO_R_UNABLE_TO_KEEPALIVE},
+  #else
+    {"UNABLE_TO_KEEPALIVE", 32, 137},
+  #endif
+  #ifdef BIO_R_UNABLE_TO_LISTEN_SOCKET
+    {"UNABLE_TO_LISTEN_SOCKET", ERR_LIB_BIO, BIO_R_UNABLE_TO_LISTEN_SOCKET},
+  #else
+    {"UNABLE_TO_LISTEN_SOCKET", 32, 119},
+  #endif
+  #ifdef BIO_R_UNABLE_TO_NODELAY
+    {"UNABLE_TO_NODELAY", ERR_LIB_BIO, BIO_R_UNABLE_TO_NODELAY},
+  #else
+    {"UNABLE_TO_NODELAY", 32, 138},
+  #endif
+  #ifdef BIO_R_UNABLE_TO_REUSEADDR
+    {"UNABLE_TO_REUSEADDR", ERR_LIB_BIO, BIO_R_UNABLE_TO_REUSEADDR},
+  #else
+    {"UNABLE_TO_REUSEADDR", 32, 139},
+  #endif
+  #ifdef BIO_R_UNAVAILABLE_IP_FAMILY
+    {"UNAVAILABLE_IP_FAMILY", ERR_LIB_BIO, BIO_R_UNAVAILABLE_IP_FAMILY},
+  #else
+    {"UNAVAILABLE_IP_FAMILY", 32, 145},
+  #endif
+  #ifdef BIO_R_UNINITIALIZED
+    {"UNINITIALIZED", ERR_LIB_BIO, BIO_R_UNINITIALIZED},
+  #else
+    {"UNINITIALIZED", 32, 120},
+  #endif
+  #ifdef BIO_R_UNKNOWN_INFO_TYPE
+    {"UNKNOWN_INFO_TYPE", ERR_LIB_BIO, BIO_R_UNKNOWN_INFO_TYPE},
+  #else
+    {"UNKNOWN_INFO_TYPE", 32, 140},
+  #endif
+  #ifdef BIO_R_UNSUPPORTED_IP_FAMILY
+    {"UNSUPPORTED_IP_FAMILY", ERR_LIB_BIO, BIO_R_UNSUPPORTED_IP_FAMILY},
+  #else
+    {"UNSUPPORTED_IP_FAMILY", 32, 146},
+  #endif
+  #ifdef BIO_R_UNSUPPORTED_METHOD
+    {"UNSUPPORTED_METHOD", ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD},
+  #else
+    {"UNSUPPORTED_METHOD", 32, 121},
+  #endif
+  #ifdef BIO_R_UNSUPPORTED_PROTOCOL_FAMILY
+    {"UNSUPPORTED_PROTOCOL_FAMILY", ERR_LIB_BIO, BIO_R_UNSUPPORTED_PROTOCOL_FAMILY},
+  #else
+    {"UNSUPPORTED_PROTOCOL_FAMILY", 32, 131},
+  #endif
+  #ifdef BIO_R_WRITE_TO_READ_ONLY_BIO
+    {"WRITE_TO_READ_ONLY_BIO", ERR_LIB_BIO, BIO_R_WRITE_TO_READ_ONLY_BIO},
+  #else
+    {"WRITE_TO_READ_ONLY_BIO", 32, 126},
+  #endif
+  #ifdef BIO_R_WSASTARTUP
+    {"WSASTARTUP", ERR_LIB_BIO, BIO_R_WSASTARTUP},
+  #else
+    {"WSASTARTUP", 32, 122},
+  #endif
+  #ifdef BN_R_ARG2_LT_ARG3
+    {"ARG2_LT_ARG3", ERR_LIB_BN, BN_R_ARG2_LT_ARG3},
+  #else
+    {"ARG2_LT_ARG3", 3, 100},
+  #endif
+  #ifdef BN_R_BAD_RECIPROCAL
+    {"BAD_RECIPROCAL", ERR_LIB_BN, BN_R_BAD_RECIPROCAL},
+  #else
+    {"BAD_RECIPROCAL", 3, 101},
+  #endif
+  #ifdef BN_R_BIGNUM_TOO_LONG
+    {"BIGNUM_TOO_LONG", ERR_LIB_BN, BN_R_BIGNUM_TOO_LONG},
+  #else
+    {"BIGNUM_TOO_LONG", 3, 114},
+  #endif
+  #ifdef BN_R_BITS_TOO_SMALL
+    {"BITS_TOO_SMALL", ERR_LIB_BN, BN_R_BITS_TOO_SMALL},
+  #else
+    {"BITS_TOO_SMALL", 3, 118},
+  #endif
+  #ifdef BN_R_CALLED_WITH_EVEN_MODULUS
+    {"CALLED_WITH_EVEN_MODULUS", ERR_LIB_BN, BN_R_CALLED_WITH_EVEN_MODULUS},
+  #else
+    {"CALLED_WITH_EVEN_MODULUS", 3, 102},
+  #endif
+  #ifdef BN_R_DIV_BY_ZERO
+    {"DIV_BY_ZERO", ERR_LIB_BN, BN_R_DIV_BY_ZERO},
+  #else
+    {"DIV_BY_ZERO", 3, 103},
+  #endif
+  #ifdef BN_R_ENCODING_ERROR
+    {"ENCODING_ERROR", ERR_LIB_BN, BN_R_ENCODING_ERROR},
+  #else
+    {"ENCODING_ERROR", 3, 104},
+  #endif
+  #ifdef BN_R_EXPAND_ON_STATIC_BIGNUM_DATA
+    {"EXPAND_ON_STATIC_BIGNUM_DATA", ERR_LIB_BN, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA},
+  #else
+    {"EXPAND_ON_STATIC_BIGNUM_DATA", 3, 105},
+  #endif
+  #ifdef BN_R_INPUT_NOT_REDUCED
+    {"INPUT_NOT_REDUCED", ERR_LIB_BN, BN_R_INPUT_NOT_REDUCED},
+  #else
+    {"INPUT_NOT_REDUCED", 3, 110},
+  #endif
+  #ifdef BN_R_INVALID_LENGTH
+    {"INVALID_LENGTH", ERR_LIB_BN, BN_R_INVALID_LENGTH},
+  #else
+    {"INVALID_LENGTH", 3, 106},
+  #endif
+  #ifdef BN_R_INVALID_RANGE
+    {"INVALID_RANGE", ERR_LIB_BN, BN_R_INVALID_RANGE},
+  #else
+    {"INVALID_RANGE", 3, 115},
+  #endif
+  #ifdef BN_R_INVALID_SHIFT
+    {"INVALID_SHIFT", ERR_LIB_BN, BN_R_INVALID_SHIFT},
+  #else
+    {"INVALID_SHIFT", 3, 119},
+  #endif
+  #ifdef BN_R_NOT_A_SQUARE
+    {"NOT_A_SQUARE", ERR_LIB_BN, BN_R_NOT_A_SQUARE},
+  #else
+    {"NOT_A_SQUARE", 3, 111},
+  #endif
+  #ifdef BN_R_NOT_INITIALIZED
+    {"NOT_INITIALIZED", ERR_LIB_BN, BN_R_NOT_INITIALIZED},
+  #else
+    {"NOT_INITIALIZED", 3, 107},
+  #endif
+  #ifdef BN_R_NO_INVERSE
+    {"NO_INVERSE", ERR_LIB_BN, BN_R_NO_INVERSE},
+  #else
+    {"NO_INVERSE", 3, 108},
+  #endif
+  #ifdef BN_R_NO_PRIME_CANDIDATE
+    {"NO_PRIME_CANDIDATE", ERR_LIB_BN, BN_R_NO_PRIME_CANDIDATE},
+  #else
+    {"NO_PRIME_CANDIDATE", 3, 121},
+  #endif
+  #ifdef BN_R_NO_SOLUTION
+    {"NO_SOLUTION", ERR_LIB_BN, BN_R_NO_SOLUTION},
+  #else
+    {"NO_SOLUTION", 3, 116},
+  #endif
+  #ifdef BN_R_NO_SUITABLE_DIGEST
+    {"NO_SUITABLE_DIGEST", ERR_LIB_BN, BN_R_NO_SUITABLE_DIGEST},
+  #else
+    {"NO_SUITABLE_DIGEST", 3, 120},
+  #endif
+  #ifdef BN_R_PRIVATE_KEY_TOO_LARGE
+    {"PRIVATE_KEY_TOO_LARGE", ERR_LIB_BN, BN_R_PRIVATE_KEY_TOO_LARGE},
+  #else
+    {"PRIVATE_KEY_TOO_LARGE", 3, 117},
+  #endif
+  #ifdef BN_R_P_IS_NOT_PRIME
+    {"P_IS_NOT_PRIME", ERR_LIB_BN, BN_R_P_IS_NOT_PRIME},
+  #else
+    {"P_IS_NOT_PRIME", 3, 112},
+  #endif
+  #ifdef BN_R_TOO_MANY_ITERATIONS
+    {"TOO_MANY_ITERATIONS", ERR_LIB_BN, BN_R_TOO_MANY_ITERATIONS},
+  #else
+    {"TOO_MANY_ITERATIONS", 3, 113},
+  #endif
+  #ifdef BN_R_TOO_MANY_TEMPORARY_VARIABLES
+    {"TOO_MANY_TEMPORARY_VARIABLES", ERR_LIB_BN, BN_R_TOO_MANY_TEMPORARY_VARIABLES},
+  #else
+    {"TOO_MANY_TEMPORARY_VARIABLES", 3, 109},
+  #endif
+  #ifdef CMP_R_ALGORITHM_NOT_SUPPORTED
+    {"ALGORITHM_NOT_SUPPORTED", ERR_LIB_CMP, CMP_R_ALGORITHM_NOT_SUPPORTED},
+  #else
+    {"ALGORITHM_NOT_SUPPORTED", 58, 139},
+  #endif
+  #ifdef CMP_R_BAD_CHECKAFTER_IN_POLLREP
+    {"BAD_CHECKAFTER_IN_POLLREP", ERR_LIB_CMP, CMP_R_BAD_CHECKAFTER_IN_POLLREP},
+  #else
+    {"BAD_CHECKAFTER_IN_POLLREP", 58, 167},
+  #endif
+  #ifdef CMP_R_BAD_REQUEST_ID
+    {"BAD_REQUEST_ID", ERR_LIB_CMP, CMP_R_BAD_REQUEST_ID},
+  #else
+    {"BAD_REQUEST_ID", 58, 108},
+  #endif
+  #ifdef CMP_R_CERTHASH_UNMATCHED
+    {"CERTHASH_UNMATCHED", ERR_LIB_CMP, CMP_R_CERTHASH_UNMATCHED},
+  #else
+    {"CERTHASH_UNMATCHED", 58, 156},
+  #endif
+  #ifdef CMP_R_CERTID_NOT_FOUND
+    {"CERTID_NOT_FOUND", ERR_LIB_CMP, CMP_R_CERTID_NOT_FOUND},
+  #else
+    {"CERTID_NOT_FOUND", 58, 109},
+  #endif
+  #ifdef CMP_R_CERTIFICATE_NOT_ACCEPTED
+    {"CERTIFICATE_NOT_ACCEPTED", ERR_LIB_CMP, CMP_R_CERTIFICATE_NOT_ACCEPTED},
+  #else
+    {"CERTIFICATE_NOT_ACCEPTED", 58, 169},
+  #endif
+  #ifdef CMP_R_CERTIFICATE_NOT_FOUND
+    {"CERTIFICATE_NOT_FOUND", ERR_LIB_CMP, CMP_R_CERTIFICATE_NOT_FOUND},
+  #else
+    {"CERTIFICATE_NOT_FOUND", 58, 112},
+  #endif
+  #ifdef CMP_R_CERTREQMSG_NOT_FOUND
+    {"CERTREQMSG_NOT_FOUND", ERR_LIB_CMP, CMP_R_CERTREQMSG_NOT_FOUND},
+  #else
+    {"CERTREQMSG_NOT_FOUND", 58, 157},
+  #endif
+  #ifdef CMP_R_CERTRESPONSE_NOT_FOUND
+    {"CERTRESPONSE_NOT_FOUND", ERR_LIB_CMP, CMP_R_CERTRESPONSE_NOT_FOUND},
+  #else
+    {"CERTRESPONSE_NOT_FOUND", 58, 113},
+  #endif
+  #ifdef CMP_R_CERT_AND_KEY_DO_NOT_MATCH
+    {"CERT_AND_KEY_DO_NOT_MATCH", ERR_LIB_CMP, CMP_R_CERT_AND_KEY_DO_NOT_MATCH},
+  #else
+    {"CERT_AND_KEY_DO_NOT_MATCH", 58, 114},
+  #endif
+  #ifdef CMP_R_CHECKAFTER_OUT_OF_RANGE
+    {"CHECKAFTER_OUT_OF_RANGE", ERR_LIB_CMP, CMP_R_CHECKAFTER_OUT_OF_RANGE},
+  #else
+    {"CHECKAFTER_OUT_OF_RANGE", 58, 181},
+  #endif
+  #ifdef CMP_R_ENCOUNTERED_KEYUPDATEWARNING
+    {"ENCOUNTERED_KEYUPDATEWARNING", ERR_LIB_CMP, CMP_R_ENCOUNTERED_KEYUPDATEWARNING},
+  #else
+    {"ENCOUNTERED_KEYUPDATEWARNING", 58, 176},
+  #endif
+  #ifdef CMP_R_ENCOUNTERED_WAITING
+    {"ENCOUNTERED_WAITING", ERR_LIB_CMP, CMP_R_ENCOUNTERED_WAITING},
+  #else
+    {"ENCOUNTERED_WAITING", 58, 162},
+  #endif
+  #ifdef CMP_R_ERROR_CALCULATING_PROTECTION
+    {"ERROR_CALCULATING_PROTECTION", ERR_LIB_CMP, CMP_R_ERROR_CALCULATING_PROTECTION},
+  #else
+    {"ERROR_CALCULATING_PROTECTION", 58, 115},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_CERTCONF
+    {"ERROR_CREATING_CERTCONF", ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTCONF},
+  #else
+    {"ERROR_CREATING_CERTCONF", 58, 116},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_CERTREP
+    {"ERROR_CREATING_CERTREP", ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTREP},
+  #else
+    {"ERROR_CREATING_CERTREP", 58, 117},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_CERTREQ
+    {"ERROR_CREATING_CERTREQ", ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTREQ},
+  #else
+    {"ERROR_CREATING_CERTREQ", 58, 163},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_ERROR
+    {"ERROR_CREATING_ERROR", ERR_LIB_CMP, CMP_R_ERROR_CREATING_ERROR},
+  #else
+    {"ERROR_CREATING_ERROR", 58, 118},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_GENM
+    {"ERROR_CREATING_GENM", ERR_LIB_CMP, CMP_R_ERROR_CREATING_GENM},
+  #else
+    {"ERROR_CREATING_GENM", 58, 119},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_GENP
+    {"ERROR_CREATING_GENP", ERR_LIB_CMP, CMP_R_ERROR_CREATING_GENP},
+  #else
+    {"ERROR_CREATING_GENP", 58, 120},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_PKICONF
+    {"ERROR_CREATING_PKICONF", ERR_LIB_CMP, CMP_R_ERROR_CREATING_PKICONF},
+  #else
+    {"ERROR_CREATING_PKICONF", 58, 122},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_POLLREP
+    {"ERROR_CREATING_POLLREP", ERR_LIB_CMP, CMP_R_ERROR_CREATING_POLLREP},
+  #else
+    {"ERROR_CREATING_POLLREP", 58, 123},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_POLLREQ
+    {"ERROR_CREATING_POLLREQ", ERR_LIB_CMP, CMP_R_ERROR_CREATING_POLLREQ},
+  #else
+    {"ERROR_CREATING_POLLREQ", 58, 124},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_RP
+    {"ERROR_CREATING_RP", ERR_LIB_CMP, CMP_R_ERROR_CREATING_RP},
+  #else
+    {"ERROR_CREATING_RP", 58, 125},
+  #endif
+  #ifdef CMP_R_ERROR_CREATING_RR
+    {"ERROR_CREATING_RR", ERR_LIB_CMP, CMP_R_ERROR_CREATING_RR},
+  #else
+    {"ERROR_CREATING_RR", 58, 126},
+  #endif
+  #ifdef CMP_R_ERROR_PARSING_PKISTATUS
+    {"ERROR_PARSING_PKISTATUS", ERR_LIB_CMP, CMP_R_ERROR_PARSING_PKISTATUS},
+  #else
+    {"ERROR_PARSING_PKISTATUS", 58, 107},
+  #endif
+  #ifdef CMP_R_ERROR_PROCESSING_MESSAGE
+    {"ERROR_PROCESSING_MESSAGE", ERR_LIB_CMP, CMP_R_ERROR_PROCESSING_MESSAGE},
+  #else
+    {"ERROR_PROCESSING_MESSAGE", 58, 158},
+  #endif
+  #ifdef CMP_R_ERROR_PROTECTING_MESSAGE
+    {"ERROR_PROTECTING_MESSAGE", ERR_LIB_CMP, CMP_R_ERROR_PROTECTING_MESSAGE},
+  #else
+    {"ERROR_PROTECTING_MESSAGE", 58, 127},
+  #endif
+  #ifdef CMP_R_ERROR_SETTING_CERTHASH
+    {"ERROR_SETTING_CERTHASH", ERR_LIB_CMP, CMP_R_ERROR_SETTING_CERTHASH},
+  #else
+    {"ERROR_SETTING_CERTHASH", 58, 128},
+  #endif
+  #ifdef CMP_R_ERROR_UNEXPECTED_CERTCONF
+    {"ERROR_UNEXPECTED_CERTCONF", ERR_LIB_CMP, CMP_R_ERROR_UNEXPECTED_CERTCONF},
+  #else
+    {"ERROR_UNEXPECTED_CERTCONF", 58, 160},
+  #endif
+  #ifdef CMP_R_ERROR_VALIDATING_PROTECTION
+    {"ERROR_VALIDATING_PROTECTION", ERR_LIB_CMP, CMP_R_ERROR_VALIDATING_PROTECTION},
+  #else
+    {"ERROR_VALIDATING_PROTECTION", 58, 140},
+  #endif
+  #ifdef CMP_R_ERROR_VALIDATING_SIGNATURE
+    {"ERROR_VALIDATING_SIGNATURE", ERR_LIB_CMP, CMP_R_ERROR_VALIDATING_SIGNATURE},
+  #else
+    {"ERROR_VALIDATING_SIGNATURE", 58, 171},
+  #endif
+  #ifdef CMP_R_FAILED_BUILDING_OWN_CHAIN
+    {"FAILED_BUILDING_OWN_CHAIN", ERR_LIB_CMP, CMP_R_FAILED_BUILDING_OWN_CHAIN},
+  #else
+    {"FAILED_BUILDING_OWN_CHAIN", 58, 164},
+  #endif
+  #ifdef CMP_R_FAILED_EXTRACTING_PUBKEY
+    {"FAILED_EXTRACTING_PUBKEY", ERR_LIB_CMP, CMP_R_FAILED_EXTRACTING_PUBKEY},
+  #else
+    {"FAILED_EXTRACTING_PUBKEY", 58, 141},
+  #endif
+  #ifdef CMP_R_FAILURE_OBTAINING_RANDOM
+    {"FAILURE_OBTAINING_RANDOM", ERR_LIB_CMP, CMP_R_FAILURE_OBTAINING_RANDOM},
+  #else
+    {"FAILURE_OBTAINING_RANDOM", 58, 110},
+  #endif
+  #ifdef CMP_R_FAIL_INFO_OUT_OF_RANGE
+    {"FAIL_INFO_OUT_OF_RANGE", ERR_LIB_CMP, CMP_R_FAIL_INFO_OUT_OF_RANGE},
+  #else
+    {"FAIL_INFO_OUT_OF_RANGE", 58, 129},
+  #endif
+  #ifdef CMP_R_INVALID_ARGS
+    {"INVALID_ARGS", ERR_LIB_CMP, CMP_R_INVALID_ARGS},
+  #else
+    {"INVALID_ARGS", 58, 100},
+  #endif
+  #ifdef CMP_R_INVALID_OPTION
+    {"INVALID_OPTION", ERR_LIB_CMP, CMP_R_INVALID_OPTION},
+  #else
+    {"INVALID_OPTION", 58, 174},
+  #endif
+  #ifdef CMP_R_MISSING_CERTID
+    {"MISSING_CERTID", ERR_LIB_CMP, CMP_R_MISSING_CERTID},
+  #else
+    {"MISSING_CERTID", 58, 165},
+  #endif
+  #ifdef CMP_R_MISSING_KEY_INPUT_FOR_CREATING_PROTECTION
+    {"MISSING_KEY_INPUT_FOR_CREATING_PROTECTION", ERR_LIB_CMP, CMP_R_MISSING_KEY_INPUT_FOR_CREATING_PROTECTION},
+  #else
+    {"MISSING_KEY_INPUT_FOR_CREATING_PROTECTION", 58, 130},
+  #endif
+  #ifdef CMP_R_MISSING_KEY_USAGE_DIGITALSIGNATURE
+    {"MISSING_KEY_USAGE_DIGITALSIGNATURE", ERR_LIB_CMP, CMP_R_MISSING_KEY_USAGE_DIGITALSIGNATURE},
+  #else
+    {"MISSING_KEY_USAGE_DIGITALSIGNATURE", 58, 142},
+  #endif
+  #ifdef CMP_R_MISSING_P10CSR
+    {"MISSING_P10CSR", ERR_LIB_CMP, CMP_R_MISSING_P10CSR},
+  #else
+    {"MISSING_P10CSR", 58, 121},
+  #endif
+  #ifdef CMP_R_MISSING_PBM_SECRET
+    {"MISSING_PBM_SECRET", ERR_LIB_CMP, CMP_R_MISSING_PBM_SECRET},
+  #else
+    {"MISSING_PBM_SECRET", 58, 166},
+  #endif
+  #ifdef CMP_R_MISSING_PRIVATE_KEY
+    {"MISSING_PRIVATE_KEY", ERR_LIB_CMP, CMP_R_MISSING_PRIVATE_KEY},
+  #else
+    {"MISSING_PRIVATE_KEY", 58, 131},
+  #endif
+  #ifdef CMP_R_MISSING_PRIVATE_KEY_FOR_POPO
+    {"MISSING_PRIVATE_KEY_FOR_POPO", ERR_LIB_CMP, CMP_R_MISSING_PRIVATE_KEY_FOR_POPO},
+  #else
+    {"MISSING_PRIVATE_KEY_FOR_POPO", 58, 190},
+  #endif
+  #ifdef CMP_R_MISSING_PROTECTION
+    {"MISSING_PROTECTION", ERR_LIB_CMP, CMP_R_MISSING_PROTECTION},
+  #else
+    {"MISSING_PROTECTION", 58, 143},
+  #endif
+  #ifdef CMP_R_MISSING_PUBLIC_KEY
+    {"MISSING_PUBLIC_KEY", ERR_LIB_CMP, CMP_R_MISSING_PUBLIC_KEY},
+  #else
+    {"MISSING_PUBLIC_KEY", 58, 183},
+  #endif
+  #ifdef CMP_R_MISSING_REFERENCE_CERT
+    {"MISSING_REFERENCE_CERT", ERR_LIB_CMP, CMP_R_MISSING_REFERENCE_CERT},
+  #else
+    {"MISSING_REFERENCE_CERT", 58, 168},
+  #endif
+  #ifdef CMP_R_MISSING_SECRET
+    {"MISSING_SECRET", ERR_LIB_CMP, CMP_R_MISSING_SECRET},
+  #else
+    {"MISSING_SECRET", 58, 178},
+  #endif
+  #ifdef CMP_R_MISSING_SENDER_IDENTIFICATION
+    {"MISSING_SENDER_IDENTIFICATION", ERR_LIB_CMP, CMP_R_MISSING_SENDER_IDENTIFICATION},
+  #else
+    {"MISSING_SENDER_IDENTIFICATION", 58, 111},
+  #endif
+  #ifdef CMP_R_MISSING_TRUST_ANCHOR
+    {"MISSING_TRUST_ANCHOR", ERR_LIB_CMP, CMP_R_MISSING_TRUST_ANCHOR},
+  #else
+    {"MISSING_TRUST_ANCHOR", 58, 179},
+  #endif
+  #ifdef CMP_R_MISSING_TRUST_STORE
+    {"MISSING_TRUST_STORE", ERR_LIB_CMP, CMP_R_MISSING_TRUST_STORE},
+  #else
+    {"MISSING_TRUST_STORE", 58, 144},
+  #endif
+  #ifdef CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED
+    {"MULTIPLE_REQUESTS_NOT_SUPPORTED", ERR_LIB_CMP, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED},
+  #else
+    {"MULTIPLE_REQUESTS_NOT_SUPPORTED", 58, 161},
+  #endif
+  #ifdef CMP_R_MULTIPLE_RESPONSES_NOT_SUPPORTED
+    {"MULTIPLE_RESPONSES_NOT_SUPPORTED", ERR_LIB_CMP, CMP_R_MULTIPLE_RESPONSES_NOT_SUPPORTED},
+  #else
+    {"MULTIPLE_RESPONSES_NOT_SUPPORTED", 58, 170},
+  #endif
+  #ifdef CMP_R_MULTIPLE_SAN_SOURCES
+    {"MULTIPLE_SAN_SOURCES", ERR_LIB_CMP, CMP_R_MULTIPLE_SAN_SOURCES},
+  #else
+    {"MULTIPLE_SAN_SOURCES", 58, 102},
+  #endif
+  #ifdef CMP_R_NO_STDIO
+    {"NO_STDIO", ERR_LIB_CMP, CMP_R_NO_STDIO},
+  #else
+    {"NO_STDIO", 58, 194},
+  #endif
+  #ifdef CMP_R_NO_SUITABLE_SENDER_CERT
+    {"NO_SUITABLE_SENDER_CERT", ERR_LIB_CMP, CMP_R_NO_SUITABLE_SENDER_CERT},
+  #else
+    {"NO_SUITABLE_SENDER_CERT", 58, 145},
+  #endif
+  #ifdef CMP_R_NULL_ARGUMENT
+    {"NULL_ARGUMENT", ERR_LIB_CMP, CMP_R_NULL_ARGUMENT},
+  #else
+    {"NULL_ARGUMENT", 58, 103},
+  #endif
+  #ifdef CMP_R_PKIBODY_ERROR
+    {"PKIBODY_ERROR", ERR_LIB_CMP, CMP_R_PKIBODY_ERROR},
+  #else
+    {"PKIBODY_ERROR", 58, 146},
+  #endif
+  #ifdef CMP_R_PKISTATUSINFO_NOT_FOUND
+    {"PKISTATUSINFO_NOT_FOUND", ERR_LIB_CMP, CMP_R_PKISTATUSINFO_NOT_FOUND},
+  #else
+    {"PKISTATUSINFO_NOT_FOUND", 58, 132},
+  #endif
+  #ifdef CMP_R_POLLING_FAILED
+    {"POLLING_FAILED", ERR_LIB_CMP, CMP_R_POLLING_FAILED},
+  #else
+    {"POLLING_FAILED", 58, 172},
+  #endif
+  #ifdef CMP_R_POTENTIALLY_INVALID_CERTIFICATE
+    {"POTENTIALLY_INVALID_CERTIFICATE", ERR_LIB_CMP, CMP_R_POTENTIALLY_INVALID_CERTIFICATE},
+  #else
+    {"POTENTIALLY_INVALID_CERTIFICATE", 58, 147},
+  #endif
+  #ifdef CMP_R_RECEIVED_ERROR
+    {"RECEIVED_ERROR", ERR_LIB_CMP, CMP_R_RECEIVED_ERROR},
+  #else
+    {"RECEIVED_ERROR", 58, 180},
+  #endif
+  #ifdef CMP_R_RECIPNONCE_UNMATCHED
+    {"RECIPNONCE_UNMATCHED", ERR_LIB_CMP, CMP_R_RECIPNONCE_UNMATCHED},
+  #else
+    {"RECIPNONCE_UNMATCHED", 58, 148},
+  #endif
+  #ifdef CMP_R_REQUEST_NOT_ACCEPTED
+    {"REQUEST_NOT_ACCEPTED", ERR_LIB_CMP, CMP_R_REQUEST_NOT_ACCEPTED},
+  #else
+    {"REQUEST_NOT_ACCEPTED", 58, 149},
+  #endif
+  #ifdef CMP_R_REQUEST_REJECTED_BY_SERVER
+    {"REQUEST_REJECTED_BY_SERVER", ERR_LIB_CMP, CMP_R_REQUEST_REJECTED_BY_SERVER},
+  #else
+    {"REQUEST_REJECTED_BY_SERVER", 58, 182},
+  #endif
+  #ifdef CMP_R_SENDER_GENERALNAME_TYPE_NOT_SUPPORTED
+    {"SENDER_GENERALNAME_TYPE_NOT_SUPPORTED", ERR_LIB_CMP, CMP_R_SENDER_GENERALNAME_TYPE_NOT_SUPPORTED},
+  #else
+    {"SENDER_GENERALNAME_TYPE_NOT_SUPPORTED", 58, 150},
+  #endif
+  #ifdef CMP_R_SRVCERT_DOES_NOT_VALIDATE_MSG
+    {"SRVCERT_DOES_NOT_VALIDATE_MSG", ERR_LIB_CMP, CMP_R_SRVCERT_DOES_NOT_VALIDATE_MSG},
+  #else
+    {"SRVCERT_DOES_NOT_VALIDATE_MSG", 58, 151},
+  #endif
+  #ifdef CMP_R_TOTAL_TIMEOUT
+    {"TOTAL_TIMEOUT", ERR_LIB_CMP, CMP_R_TOTAL_TIMEOUT},
+  #else
+    {"TOTAL_TIMEOUT", 58, 184},
+  #endif
+  #ifdef CMP_R_TRANSACTIONID_UNMATCHED
+    {"TRANSACTIONID_UNMATCHED", ERR_LIB_CMP, CMP_R_TRANSACTIONID_UNMATCHED},
+  #else
+    {"TRANSACTIONID_UNMATCHED", 58, 152},
+  #endif
+  #ifdef CMP_R_TRANSFER_ERROR
+    {"TRANSFER_ERROR", ERR_LIB_CMP, CMP_R_TRANSFER_ERROR},
+  #else
+    {"TRANSFER_ERROR", 58, 159},
+  #endif
+  #ifdef CMP_R_UNEXPECTED_PKIBODY
+    {"UNEXPECTED_PKIBODY", ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY},
+  #else
+    {"UNEXPECTED_PKIBODY", 58, 133},
+  #endif
+  #ifdef CMP_R_UNEXPECTED_PKISTATUS
+    {"UNEXPECTED_PKISTATUS", ERR_LIB_CMP, CMP_R_UNEXPECTED_PKISTATUS},
+  #else
+    {"UNEXPECTED_PKISTATUS", 58, 185},
+  #endif
+  #ifdef CMP_R_UNEXPECTED_PVNO
+    {"UNEXPECTED_PVNO", ERR_LIB_CMP, CMP_R_UNEXPECTED_PVNO},
+  #else
+    {"UNEXPECTED_PVNO", 58, 153},
+  #endif
+  #ifdef CMP_R_UNKNOWN_ALGORITHM_ID
+    {"UNKNOWN_ALGORITHM_ID", ERR_LIB_CMP, CMP_R_UNKNOWN_ALGORITHM_ID},
+  #else
+    {"UNKNOWN_ALGORITHM_ID", 58, 134},
+  #endif
+  #ifdef CMP_R_UNKNOWN_CERT_TYPE
+    {"UNKNOWN_CERT_TYPE", ERR_LIB_CMP, CMP_R_UNKNOWN_CERT_TYPE},
+  #else
+    {"UNKNOWN_CERT_TYPE", 58, 135},
+  #endif
+  #ifdef CMP_R_UNKNOWN_PKISTATUS
+    {"UNKNOWN_PKISTATUS", ERR_LIB_CMP, CMP_R_UNKNOWN_PKISTATUS},
+  #else
+    {"UNKNOWN_PKISTATUS", 58, 186},
+  #endif
+  #ifdef CMP_R_UNSUPPORTED_ALGORITHM
+    {"UNSUPPORTED_ALGORITHM", ERR_LIB_CMP, CMP_R_UNSUPPORTED_ALGORITHM},
+  #else
+    {"UNSUPPORTED_ALGORITHM", 58, 136},
+  #endif
+  #ifdef CMP_R_UNSUPPORTED_KEY_TYPE
+    {"UNSUPPORTED_KEY_TYPE", ERR_LIB_CMP, CMP_R_UNSUPPORTED_KEY_TYPE},
+  #else
+    {"UNSUPPORTED_KEY_TYPE", 58, 137},
+  #endif
+  #ifdef CMP_R_UNSUPPORTED_PROTECTION_ALG_DHBASEDMAC
+    {"UNSUPPORTED_PROTECTION_ALG_DHBASEDMAC", ERR_LIB_CMP, CMP_R_UNSUPPORTED_PROTECTION_ALG_DHBASEDMAC},
+  #else
+    {"UNSUPPORTED_PROTECTION_ALG_DHBASEDMAC", 58, 154},
+  #endif
+  #ifdef CMP_R_VALUE_TOO_LARGE
+    {"VALUE_TOO_LARGE", ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE},
+  #else
+    {"VALUE_TOO_LARGE", 58, 175},
+  #endif
+  #ifdef CMP_R_VALUE_TOO_SMALL
+    {"VALUE_TOO_SMALL", ERR_LIB_CMP, CMP_R_VALUE_TOO_SMALL},
+  #else
+    {"VALUE_TOO_SMALL", 58, 177},
+  #endif
+  #ifdef CMP_R_WRONG_ALGORITHM_OID
+    {"WRONG_ALGORITHM_OID", ERR_LIB_CMP, CMP_R_WRONG_ALGORITHM_OID},
+  #else
+    {"WRONG_ALGORITHM_OID", 58, 138},
+  #endif
+  #ifdef CMP_R_WRONG_CERTID
+    {"WRONG_CERTID", ERR_LIB_CMP, CMP_R_WRONG_CERTID},
+  #else
+    {"WRONG_CERTID", 58, 189},
+  #endif
+  #ifdef CMP_R_WRONG_CERTID_IN_RP
+    {"WRONG_CERTID_IN_RP", ERR_LIB_CMP, CMP_R_WRONG_CERTID_IN_RP},
+  #else
+    {"WRONG_CERTID_IN_RP", 58, 187},
+  #endif
+  #ifdef CMP_R_WRONG_PBM_VALUE
+    {"WRONG_PBM_VALUE", ERR_LIB_CMP, CMP_R_WRONG_PBM_VALUE},
+  #else
+    {"WRONG_PBM_VALUE", 58, 155},
+  #endif
+  #ifdef CMP_R_WRONG_RP_COMPONENT_COUNT
+    {"WRONG_RP_COMPONENT_COUNT", ERR_LIB_CMP, CMP_R_WRONG_RP_COMPONENT_COUNT},
+  #else
+    {"WRONG_RP_COMPONENT_COUNT", 58, 188},
+  #endif
+  #ifdef CMP_R_WRONG_SERIAL_IN_RP
+    {"WRONG_SERIAL_IN_RP", ERR_LIB_CMP, CMP_R_WRONG_SERIAL_IN_RP},
+  #else
+    {"WRONG_SERIAL_IN_RP", 58, 173},
+  #endif
+  #ifdef CMS_R_ADD_SIGNER_ERROR
+    {"ADD_SIGNER_ERROR", ERR_LIB_CMS, CMS_R_ADD_SIGNER_ERROR},
+  #else
+    {"ADD_SIGNER_ERROR", 46, 99},
+  #endif
+  #ifdef CMS_R_ATTRIBUTE_ERROR
+    {"ATTRIBUTE_ERROR", ERR_LIB_CMS, CMS_R_ATTRIBUTE_ERROR},
+  #else
+    {"ATTRIBUTE_ERROR", 46, 161},
+  #endif
+  #ifdef CMS_R_CERTIFICATE_ALREADY_PRESENT
+    {"CERTIFICATE_ALREADY_PRESENT", ERR_LIB_CMS, CMS_R_CERTIFICATE_ALREADY_PRESENT},
+  #else
+    {"CERTIFICATE_ALREADY_PRESENT", 46, 175},
+  #endif
+  #ifdef CMS_R_CERTIFICATE_HAS_NO_KEYID
+    {"CERTIFICATE_HAS_NO_KEYID", ERR_LIB_CMS, CMS_R_CERTIFICATE_HAS_NO_KEYID},
+  #else
+    {"CERTIFICATE_HAS_NO_KEYID", 46, 160},
+  #endif
+  #ifdef CMS_R_CERTIFICATE_VERIFY_ERROR
+    {"CERTIFICATE_VERIFY_ERROR", ERR_LIB_CMS, CMS_R_CERTIFICATE_VERIFY_ERROR},
+  #else
+    {"CERTIFICATE_VERIFY_ERROR", 46, 100},
+  #endif
+  #ifdef CMS_R_CIPHER_AEAD_SET_TAG_ERROR
+    {"CIPHER_AEAD_SET_TAG_ERROR", ERR_LIB_CMS, CMS_R_CIPHER_AEAD_SET_TAG_ERROR},
+  #else
+    {"CIPHER_AEAD_SET_TAG_ERROR", 46, 184},
+  #endif
+  #ifdef CMS_R_CIPHER_GET_TAG
+    {"CIPHER_GET_TAG", ERR_LIB_CMS, CMS_R_CIPHER_GET_TAG},
+  #else
+    {"CIPHER_GET_TAG", 46, 185},
+  #endif
+  #ifdef CMS_R_CIPHER_INITIALISATION_ERROR
+    {"CIPHER_INITIALISATION_ERROR", ERR_LIB_CMS, CMS_R_CIPHER_INITIALISATION_ERROR},
+  #else
+    {"CIPHER_INITIALISATION_ERROR", 46, 101},
+  #endif
+  #ifdef CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR
+    {"CIPHER_PARAMETER_INITIALISATION_ERROR", ERR_LIB_CMS, CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR},
+  #else
+    {"CIPHER_PARAMETER_INITIALISATION_ERROR", 46, 102},
+  #endif
+  #ifdef CMS_R_CMS_DATAFINAL_ERROR
+    {"CMS_DATAFINAL_ERROR", ERR_LIB_CMS, CMS_R_CMS_DATAFINAL_ERROR},
+  #else
+    {"CMS_DATAFINAL_ERROR", 46, 103},
+  #endif
+  #ifdef CMS_R_CMS_LIB
+    {"CMS_LIB", ERR_LIB_CMS, CMS_R_CMS_LIB},
+  #else
+    {"CMS_LIB", 46, 104},
+  #endif
+  #ifdef CMS_R_CONTENTIDENTIFIER_MISMATCH
+    {"CONTENTIDENTIFIER_MISMATCH", ERR_LIB_CMS, CMS_R_CONTENTIDENTIFIER_MISMATCH},
+  #else
+    {"CONTENTIDENTIFIER_MISMATCH", 46, 170},
+  #endif
+  #ifdef CMS_R_CONTENT_NOT_FOUND
+    {"CONTENT_NOT_FOUND", ERR_LIB_CMS, CMS_R_CONTENT_NOT_FOUND},
+  #else
+    {"CONTENT_NOT_FOUND", 46, 105},
+  #endif
+  #ifdef CMS_R_CONTENT_TYPE_MISMATCH
+    {"CONTENT_TYPE_MISMATCH", ERR_LIB_CMS, CMS_R_CONTENT_TYPE_MISMATCH},
+  #else
+    {"CONTENT_TYPE_MISMATCH", 46, 171},
+  #endif
+  #ifdef CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA
+    {"CONTENT_TYPE_NOT_COMPRESSED_DATA", ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA},
+  #else
+    {"CONTENT_TYPE_NOT_COMPRESSED_DATA", 46, 106},
+  #endif
+  #ifdef CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA
+    {"CONTENT_TYPE_NOT_ENVELOPED_DATA", ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA},
+  #else
+    {"CONTENT_TYPE_NOT_ENVELOPED_DATA", 46, 107},
+  #endif
+  #ifdef CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA
+    {"CONTENT_TYPE_NOT_SIGNED_DATA", ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA},
+  #else
+    {"CONTENT_TYPE_NOT_SIGNED_DATA", 46, 108},
+  #endif
+  #ifdef CMS_R_CONTENT_VERIFY_ERROR
+    {"CONTENT_VERIFY_ERROR", ERR_LIB_CMS, CMS_R_CONTENT_VERIFY_ERROR},
+  #else
+    {"CONTENT_VERIFY_ERROR", 46, 109},
+  #endif
+  #ifdef CMS_R_CTRL_ERROR
+    {"CTRL_ERROR", ERR_LIB_CMS, CMS_R_CTRL_ERROR},
+  #else
+    {"CTRL_ERROR", 46, 110},
+  #endif
+  #ifdef CMS_R_CTRL_FAILURE
+    {"CTRL_FAILURE", ERR_LIB_CMS, CMS_R_CTRL_FAILURE},
+  #else
+    {"CTRL_FAILURE", 46, 111},
+  #endif
+  #ifdef CMS_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_CMS, CMS_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 46, 187},
+  #endif
+  #ifdef CMS_R_DECRYPT_ERROR
+    {"DECRYPT_ERROR", ERR_LIB_CMS, CMS_R_DECRYPT_ERROR},
+  #else
+    {"DECRYPT_ERROR", 46, 112},
+  #endif
+  #ifdef CMS_R_ERROR_GETTING_PUBLIC_KEY
+    {"ERROR_GETTING_PUBLIC_KEY", ERR_LIB_CMS, CMS_R_ERROR_GETTING_PUBLIC_KEY},
+  #else
+    {"ERROR_GETTING_PUBLIC_KEY", 46, 113},
+  #endif
+  #ifdef CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE
+    {"ERROR_READING_MESSAGEDIGEST_ATTRIBUTE", ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE},
+  #else
+    {"ERROR_READING_MESSAGEDIGEST_ATTRIBUTE", 46, 114},
+  #endif
+  #ifdef CMS_R_ERROR_SETTING_KEY
+    {"ERROR_SETTING_KEY", ERR_LIB_CMS, CMS_R_ERROR_SETTING_KEY},
+  #else
+    {"ERROR_SETTING_KEY", 46, 115},
+  #endif
+  #ifdef CMS_R_ERROR_SETTING_RECIPIENTINFO
+    {"ERROR_SETTING_RECIPIENTINFO", ERR_LIB_CMS, CMS_R_ERROR_SETTING_RECIPIENTINFO},
+  #else
+    {"ERROR_SETTING_RECIPIENTINFO", 46, 116},
+  #endif
+  #ifdef CMS_R_ESS_SIGNING_CERTID_MISMATCH_ERROR
+    {"ESS_SIGNING_CERTID_MISMATCH_ERROR", ERR_LIB_CMS, CMS_R_ESS_SIGNING_CERTID_MISMATCH_ERROR},
+  #else
+    {"ESS_SIGNING_CERTID_MISMATCH_ERROR", 46, 183},
+  #endif
+  #ifdef CMS_R_INVALID_ENCRYPTED_KEY_LENGTH
+    {"INVALID_ENCRYPTED_KEY_LENGTH", ERR_LIB_CMS, CMS_R_INVALID_ENCRYPTED_KEY_LENGTH},
+  #else
+    {"INVALID_ENCRYPTED_KEY_LENGTH", 46, 117},
+  #endif
+  #ifdef CMS_R_INVALID_KEY_ENCRYPTION_PARAMETER
+    {"INVALID_KEY_ENCRYPTION_PARAMETER", ERR_LIB_CMS, CMS_R_INVALID_KEY_ENCRYPTION_PARAMETER},
+  #else
+    {"INVALID_KEY_ENCRYPTION_PARAMETER", 46, 176},
+  #endif
+  #ifdef CMS_R_INVALID_KEY_LENGTH
+    {"INVALID_KEY_LENGTH", ERR_LIB_CMS, CMS_R_INVALID_KEY_LENGTH},
+  #else
+    {"INVALID_KEY_LENGTH", 46, 118},
+  #endif
+  #ifdef CMS_R_INVALID_LABEL
+    {"INVALID_LABEL", ERR_LIB_CMS, CMS_R_INVALID_LABEL},
+  #else
+    {"INVALID_LABEL", 46, 190},
+  #endif
+  #ifdef CMS_R_INVALID_OAEP_PARAMETERS
+    {"INVALID_OAEP_PARAMETERS", ERR_LIB_CMS, CMS_R_INVALID_OAEP_PARAMETERS},
+  #else
+    {"INVALID_OAEP_PARAMETERS", 46, 191},
+  #endif
+  #ifdef CMS_R_KDF_PARAMETER_ERROR
+    {"KDF_PARAMETER_ERROR", ERR_LIB_CMS, CMS_R_KDF_PARAMETER_ERROR},
+  #else
+    {"KDF_PARAMETER_ERROR", 46, 186},
+  #endif
+  #ifdef CMS_R_MD_BIO_INIT_ERROR
+    {"MD_BIO_INIT_ERROR", ERR_LIB_CMS, CMS_R_MD_BIO_INIT_ERROR},
+  #else
+    {"MD_BIO_INIT_ERROR", 46, 119},
+  #endif
+  #ifdef CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH
+    {"MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH", ERR_LIB_CMS, CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH},
+  #else
+    {"MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH", 46, 120},
+  #endif
+  #ifdef CMS_R_MESSAGEDIGEST_WRONG_LENGTH
+    {"MESSAGEDIGEST_WRONG_LENGTH", ERR_LIB_CMS, CMS_R_MESSAGEDIGEST_WRONG_LENGTH},
+  #else
+    {"MESSAGEDIGEST_WRONG_LENGTH", 46, 121},
+  #endif
+  #ifdef CMS_R_MSGSIGDIGEST_ERROR
+    {"MSGSIGDIGEST_ERROR", ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_ERROR},
+  #else
+    {"MSGSIGDIGEST_ERROR", 46, 172},
+  #endif
+  #ifdef CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE
+    {"MSGSIGDIGEST_VERIFICATION_FAILURE", ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE},
+  #else
+    {"MSGSIGDIGEST_VERIFICATION_FAILURE", 46, 162},
+  #endif
+  #ifdef CMS_R_MSGSIGDIGEST_WRONG_LENGTH
+    {"MSGSIGDIGEST_WRONG_LENGTH", ERR_LIB_CMS, CMS_R_MSGSIGDIGEST_WRONG_LENGTH},
+  #else
+    {"MSGSIGDIGEST_WRONG_LENGTH", 46, 163},
+  #endif
+  #ifdef CMS_R_NEED_ONE_SIGNER
+    {"NEED_ONE_SIGNER", ERR_LIB_CMS, CMS_R_NEED_ONE_SIGNER},
+  #else
+    {"NEED_ONE_SIGNER", 46, 164},
+  #endif
+  #ifdef CMS_R_NOT_A_SIGNED_RECEIPT
+    {"NOT_A_SIGNED_RECEIPT", ERR_LIB_CMS, CMS_R_NOT_A_SIGNED_RECEIPT},
+  #else
+    {"NOT_A_SIGNED_RECEIPT", 46, 165},
+  #endif
+  #ifdef CMS_R_NOT_ENCRYPTED_DATA
+    {"NOT_ENCRYPTED_DATA", ERR_LIB_CMS, CMS_R_NOT_ENCRYPTED_DATA},
+  #else
+    {"NOT_ENCRYPTED_DATA", 46, 122},
+  #endif
+  #ifdef CMS_R_NOT_KEK
+    {"NOT_KEK", ERR_LIB_CMS, CMS_R_NOT_KEK},
+  #else
+    {"NOT_KEK", 46, 123},
+  #endif
+  #ifdef CMS_R_NOT_KEY_AGREEMENT
+    {"NOT_KEY_AGREEMENT", ERR_LIB_CMS, CMS_R_NOT_KEY_AGREEMENT},
+  #else
+    {"NOT_KEY_AGREEMENT", 46, 181},
+  #endif
+  #ifdef CMS_R_NOT_KEY_TRANSPORT
+    {"NOT_KEY_TRANSPORT", ERR_LIB_CMS, CMS_R_NOT_KEY_TRANSPORT},
+  #else
+    {"NOT_KEY_TRANSPORT", 46, 124},
+  #endif
+  #ifdef CMS_R_NOT_PWRI
+    {"NOT_PWRI", ERR_LIB_CMS, CMS_R_NOT_PWRI},
+  #else
+    {"NOT_PWRI", 46, 177},
+  #endif
+  #ifdef CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
+    {"NOT_SUPPORTED_FOR_THIS_KEY_TYPE", ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE},
+  #else
+    {"NOT_SUPPORTED_FOR_THIS_KEY_TYPE", 46, 125},
+  #endif
+  #ifdef CMS_R_NO_CIPHER
+    {"NO_CIPHER", ERR_LIB_CMS, CMS_R_NO_CIPHER},
+  #else
+    {"NO_CIPHER", 46, 126},
+  #endif
+  #ifdef CMS_R_NO_CONTENT
+    {"NO_CONTENT", ERR_LIB_CMS, CMS_R_NO_CONTENT},
+  #else
+    {"NO_CONTENT", 46, 127},
+  #endif
+  #ifdef CMS_R_NO_CONTENT_TYPE
+    {"NO_CONTENT_TYPE", ERR_LIB_CMS, CMS_R_NO_CONTENT_TYPE},
+  #else
+    {"NO_CONTENT_TYPE", 46, 173},
+  #endif
+  #ifdef CMS_R_NO_DEFAULT_DIGEST
+    {"NO_DEFAULT_DIGEST", ERR_LIB_CMS, CMS_R_NO_DEFAULT_DIGEST},
+  #else
+    {"NO_DEFAULT_DIGEST", 46, 128},
+  #endif
+  #ifdef CMS_R_NO_DIGEST_SET
+    {"NO_DIGEST_SET", ERR_LIB_CMS, CMS_R_NO_DIGEST_SET},
+  #else
+    {"NO_DIGEST_SET", 46, 129},
+  #endif
+  #ifdef CMS_R_NO_KEY
+    {"NO_KEY", ERR_LIB_CMS, CMS_R_NO_KEY},
+  #else
+    {"NO_KEY", 46, 130},
+  #endif
+  #ifdef CMS_R_NO_KEY_OR_CERT
+    {"NO_KEY_OR_CERT", ERR_LIB_CMS, CMS_R_NO_KEY_OR_CERT},
+  #else
+    {"NO_KEY_OR_CERT", 46, 174},
+  #endif
+  #ifdef CMS_R_NO_MATCHING_DIGEST
+    {"NO_MATCHING_DIGEST", ERR_LIB_CMS, CMS_R_NO_MATCHING_DIGEST},
+  #else
+    {"NO_MATCHING_DIGEST", 46, 131},
+  #endif
+  #ifdef CMS_R_NO_MATCHING_RECIPIENT
+    {"NO_MATCHING_RECIPIENT", ERR_LIB_CMS, CMS_R_NO_MATCHING_RECIPIENT},
+  #else
+    {"NO_MATCHING_RECIPIENT", 46, 132},
+  #endif
+  #ifdef CMS_R_NO_MATCHING_SIGNATURE
+    {"NO_MATCHING_SIGNATURE", ERR_LIB_CMS, CMS_R_NO_MATCHING_SIGNATURE},
+  #else
+    {"NO_MATCHING_SIGNATURE", 46, 166},
+  #endif
+  #ifdef CMS_R_NO_MSGSIGDIGEST
+    {"NO_MSGSIGDIGEST", ERR_LIB_CMS, CMS_R_NO_MSGSIGDIGEST},
+  #else
+    {"NO_MSGSIGDIGEST", 46, 167},
+  #endif
+  #ifdef CMS_R_NO_PASSWORD
+    {"NO_PASSWORD", ERR_LIB_CMS, CMS_R_NO_PASSWORD},
+  #else
+    {"NO_PASSWORD", 46, 178},
+  #endif
+  #ifdef CMS_R_NO_PRIVATE_KEY
+    {"NO_PRIVATE_KEY", ERR_LIB_CMS, CMS_R_NO_PRIVATE_KEY},
+  #else
+    {"NO_PRIVATE_KEY", 46, 133},
+  #endif
+  #ifdef CMS_R_NO_PUBLIC_KEY
+    {"NO_PUBLIC_KEY", ERR_LIB_CMS, CMS_R_NO_PUBLIC_KEY},
+  #else
+    {"NO_PUBLIC_KEY", 46, 134},
+  #endif
+  #ifdef CMS_R_NO_RECEIPT_REQUEST
+    {"NO_RECEIPT_REQUEST", ERR_LIB_CMS, CMS_R_NO_RECEIPT_REQUEST},
+  #else
+    {"NO_RECEIPT_REQUEST", 46, 168},
+  #endif
+  #ifdef CMS_R_NO_SIGNERS
+    {"NO_SIGNERS", ERR_LIB_CMS, CMS_R_NO_SIGNERS},
+  #else
+    {"NO_SIGNERS", 46, 135},
+  #endif
+  #ifdef CMS_R_PEER_KEY_ERROR
+    {"PEER_KEY_ERROR", ERR_LIB_CMS, CMS_R_PEER_KEY_ERROR},
+  #else
+    {"PEER_KEY_ERROR", 46, 188},
+  #endif
+  #ifdef CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", ERR_LIB_CMS, CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE},
+  #else
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", 46, 136},
+  #endif
+  #ifdef CMS_R_RECEIPT_DECODE_ERROR
+    {"RECEIPT_DECODE_ERROR", ERR_LIB_CMS, CMS_R_RECEIPT_DECODE_ERROR},
+  #else
+    {"RECEIPT_DECODE_ERROR", 46, 169},
+  #endif
+  #ifdef CMS_R_RECIPIENT_ERROR
+    {"RECIPIENT_ERROR", ERR_LIB_CMS, CMS_R_RECIPIENT_ERROR},
+  #else
+    {"RECIPIENT_ERROR", 46, 137},
+  #endif
+  #ifdef CMS_R_SHARED_INFO_ERROR
+    {"SHARED_INFO_ERROR", ERR_LIB_CMS, CMS_R_SHARED_INFO_ERROR},
+  #else
+    {"SHARED_INFO_ERROR", 46, 189},
+  #endif
+  #ifdef CMS_R_SIGNER_CERTIFICATE_NOT_FOUND
+    {"SIGNER_CERTIFICATE_NOT_FOUND", ERR_LIB_CMS, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND},
+  #else
+    {"SIGNER_CERTIFICATE_NOT_FOUND", 46, 138},
+  #endif
+  #ifdef CMS_R_SIGNFINAL_ERROR
+    {"SIGNFINAL_ERROR", ERR_LIB_CMS, CMS_R_SIGNFINAL_ERROR},
+  #else
+    {"SIGNFINAL_ERROR", 46, 139},
+  #endif
+  #ifdef CMS_R_SMIME_TEXT_ERROR
+    {"SMIME_TEXT_ERROR", ERR_LIB_CMS, CMS_R_SMIME_TEXT_ERROR},
+  #else
+    {"SMIME_TEXT_ERROR", 46, 140},
+  #endif
+  #ifdef CMS_R_STORE_INIT_ERROR
+    {"STORE_INIT_ERROR", ERR_LIB_CMS, CMS_R_STORE_INIT_ERROR},
+  #else
+    {"STORE_INIT_ERROR", 46, 141},
+  #endif
+  #ifdef CMS_R_TYPE_NOT_COMPRESSED_DATA
+    {"TYPE_NOT_COMPRESSED_DATA", ERR_LIB_CMS, CMS_R_TYPE_NOT_COMPRESSED_DATA},
+  #else
+    {"TYPE_NOT_COMPRESSED_DATA", 46, 142},
+  #endif
+  #ifdef CMS_R_TYPE_NOT_DATA
+    {"TYPE_NOT_DATA", ERR_LIB_CMS, CMS_R_TYPE_NOT_DATA},
+  #else
+    {"TYPE_NOT_DATA", 46, 143},
+  #endif
+  #ifdef CMS_R_TYPE_NOT_DIGESTED_DATA
+    {"TYPE_NOT_DIGESTED_DATA", ERR_LIB_CMS, CMS_R_TYPE_NOT_DIGESTED_DATA},
+  #else
+    {"TYPE_NOT_DIGESTED_DATA", 46, 144},
+  #endif
+  #ifdef CMS_R_TYPE_NOT_ENCRYPTED_DATA
+    {"TYPE_NOT_ENCRYPTED_DATA", ERR_LIB_CMS, CMS_R_TYPE_NOT_ENCRYPTED_DATA},
+  #else
+    {"TYPE_NOT_ENCRYPTED_DATA", 46, 145},
+  #endif
+  #ifdef CMS_R_TYPE_NOT_ENVELOPED_DATA
+    {"TYPE_NOT_ENVELOPED_DATA", ERR_LIB_CMS, CMS_R_TYPE_NOT_ENVELOPED_DATA},
+  #else
+    {"TYPE_NOT_ENVELOPED_DATA", 46, 146},
+  #endif
+  #ifdef CMS_R_UNABLE_TO_FINALIZE_CONTEXT
+    {"UNABLE_TO_FINALIZE_CONTEXT", ERR_LIB_CMS, CMS_R_UNABLE_TO_FINALIZE_CONTEXT},
+  #else
+    {"UNABLE_TO_FINALIZE_CONTEXT", 46, 147},
+  #endif
+  #ifdef CMS_R_UNKNOWN_CIPHER
+    {"UNKNOWN_CIPHER", ERR_LIB_CMS, CMS_R_UNKNOWN_CIPHER},
+  #else
+    {"UNKNOWN_CIPHER", 46, 148},
+  #endif
+  #ifdef CMS_R_UNKNOWN_DIGEST_ALGORITHM
+    {"UNKNOWN_DIGEST_ALGORITHM", ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM},
+  #else
+    {"UNKNOWN_DIGEST_ALGORITHM", 46, 149},
+  #endif
+  #ifdef CMS_R_UNKNOWN_ID
+    {"UNKNOWN_ID", ERR_LIB_CMS, CMS_R_UNKNOWN_ID},
+  #else
+    {"UNKNOWN_ID", 46, 150},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM
+    {"UNSUPPORTED_COMPRESSION_ALGORITHM", ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM},
+  #else
+    {"UNSUPPORTED_COMPRESSION_ALGORITHM", 46, 151},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM
+    {"UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM", ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM},
+  #else
+    {"UNSUPPORTED_CONTENT_ENCRYPTION_ALGORITHM", 46, 194},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_CONTENT_TYPE
+    {"UNSUPPORTED_CONTENT_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE},
+  #else
+    {"UNSUPPORTED_CONTENT_TYPE", 46, 152},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_ENCRYPTION_TYPE
+    {"UNSUPPORTED_ENCRYPTION_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_ENCRYPTION_TYPE},
+  #else
+    {"UNSUPPORTED_ENCRYPTION_TYPE", 46, 192},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_KEK_ALGORITHM
+    {"UNSUPPORTED_KEK_ALGORITHM", ERR_LIB_CMS, CMS_R_UNSUPPORTED_KEK_ALGORITHM},
+  #else
+    {"UNSUPPORTED_KEK_ALGORITHM", 46, 153},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_KEY_ENCRYPTION_ALGORITHM
+    {"UNSUPPORTED_KEY_ENCRYPTION_ALGORITHM", ERR_LIB_CMS, CMS_R_UNSUPPORTED_KEY_ENCRYPTION_ALGORITHM},
+  #else
+    {"UNSUPPORTED_KEY_ENCRYPTION_ALGORITHM", 46, 179},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_LABEL_SOURCE
+    {"UNSUPPORTED_LABEL_SOURCE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_LABEL_SOURCE},
+  #else
+    {"UNSUPPORTED_LABEL_SOURCE", 46, 193},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_RECIPIENTINFO_TYPE
+    {"UNSUPPORTED_RECIPIENTINFO_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_RECIPIENTINFO_TYPE},
+  #else
+    {"UNSUPPORTED_RECIPIENTINFO_TYPE", 46, 155},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_RECIPIENT_TYPE
+    {"UNSUPPORTED_RECIPIENT_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_RECIPIENT_TYPE},
+  #else
+    {"UNSUPPORTED_RECIPIENT_TYPE", 46, 154},
+  #endif
+  #ifdef CMS_R_UNSUPPORTED_TYPE
+    {"UNSUPPORTED_TYPE", ERR_LIB_CMS, CMS_R_UNSUPPORTED_TYPE},
+  #else
+    {"UNSUPPORTED_TYPE", 46, 156},
+  #endif
+  #ifdef CMS_R_UNWRAP_ERROR
+    {"UNWRAP_ERROR", ERR_LIB_CMS, CMS_R_UNWRAP_ERROR},
+  #else
+    {"UNWRAP_ERROR", 46, 157},
+  #endif
+  #ifdef CMS_R_UNWRAP_FAILURE
+    {"UNWRAP_FAILURE", ERR_LIB_CMS, CMS_R_UNWRAP_FAILURE},
+  #else
+    {"UNWRAP_FAILURE", 46, 180},
+  #endif
+  #ifdef CMS_R_VERIFICATION_FAILURE
+    {"VERIFICATION_FAILURE", ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE},
+  #else
+    {"VERIFICATION_FAILURE", 46, 158},
+  #endif
+  #ifdef CMS_R_WRAP_ERROR
+    {"WRAP_ERROR", ERR_LIB_CMS, CMS_R_WRAP_ERROR},
+  #else
+    {"WRAP_ERROR", 46, 159},
+  #endif
+  #ifdef COMP_R_ZLIB_DEFLATE_ERROR
+    {"ZLIB_DEFLATE_ERROR", ERR_LIB_COMP, COMP_R_ZLIB_DEFLATE_ERROR},
+  #else
+    {"ZLIB_DEFLATE_ERROR", 41, 99},
+  #endif
+  #ifdef COMP_R_ZLIB_INFLATE_ERROR
+    {"ZLIB_INFLATE_ERROR", ERR_LIB_COMP, COMP_R_ZLIB_INFLATE_ERROR},
+  #else
+    {"ZLIB_INFLATE_ERROR", 41, 100},
+  #endif
+  #ifdef COMP_R_ZLIB_NOT_SUPPORTED
+    {"ZLIB_NOT_SUPPORTED", ERR_LIB_COMP, COMP_R_ZLIB_NOT_SUPPORTED},
+  #else
+    {"ZLIB_NOT_SUPPORTED", 41, 101},
+  #endif
+  #ifdef CONF_R_ERROR_LOADING_DSO
+    {"ERROR_LOADING_DSO", ERR_LIB_CONF, CONF_R_ERROR_LOADING_DSO},
+  #else
+    {"ERROR_LOADING_DSO", 14, 110},
+  #endif
+  #ifdef CONF_R_INVALID_PRAGMA
+    {"INVALID_PRAGMA", ERR_LIB_CONF, CONF_R_INVALID_PRAGMA},
+  #else
+    {"INVALID_PRAGMA", 14, 122},
+  #endif
+  #ifdef CONF_R_LIST_CANNOT_BE_NULL
+    {"LIST_CANNOT_BE_NULL", ERR_LIB_CONF, CONF_R_LIST_CANNOT_BE_NULL},
+  #else
+    {"LIST_CANNOT_BE_NULL", 14, 115},
+  #endif
+  #ifdef CONF_R_MANDATORY_BRACES_IN_VARIABLE_EXPANSION
+    {"MANDATORY_BRACES_IN_VARIABLE_EXPANSION", ERR_LIB_CONF, CONF_R_MANDATORY_BRACES_IN_VARIABLE_EXPANSION},
+  #else
+    {"MANDATORY_BRACES_IN_VARIABLE_EXPANSION", 14, 123},
+  #endif
+  #ifdef CONF_R_MISSING_CLOSE_SQUARE_BRACKET
+    {"MISSING_CLOSE_SQUARE_BRACKET", ERR_LIB_CONF, CONF_R_MISSING_CLOSE_SQUARE_BRACKET},
+  #else
+    {"MISSING_CLOSE_SQUARE_BRACKET", 14, 100},
+  #endif
+  #ifdef CONF_R_MISSING_EQUAL_SIGN
+    {"MISSING_EQUAL_SIGN", ERR_LIB_CONF, CONF_R_MISSING_EQUAL_SIGN},
+  #else
+    {"MISSING_EQUAL_SIGN", 14, 101},
+  #endif
+  #ifdef CONF_R_MISSING_INIT_FUNCTION
+    {"MISSING_INIT_FUNCTION", ERR_LIB_CONF, CONF_R_MISSING_INIT_FUNCTION},
+  #else
+    {"MISSING_INIT_FUNCTION", 14, 112},
+  #endif
+  #ifdef CONF_R_MODULE_INITIALIZATION_ERROR
+    {"MODULE_INITIALIZATION_ERROR", ERR_LIB_CONF, CONF_R_MODULE_INITIALIZATION_ERROR},
+  #else
+    {"MODULE_INITIALIZATION_ERROR", 14, 109},
+  #endif
+  #ifdef CONF_R_NO_CLOSE_BRACE
+    {"NO_CLOSE_BRACE", ERR_LIB_CONF, CONF_R_NO_CLOSE_BRACE},
+  #else
+    {"NO_CLOSE_BRACE", 14, 102},
+  #endif
+  #ifdef CONF_R_NO_CONF
+    {"NO_CONF", ERR_LIB_CONF, CONF_R_NO_CONF},
+  #else
+    {"NO_CONF", 14, 105},
+  #endif
+  #ifdef CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE
+    {"NO_CONF_OR_ENVIRONMENT_VARIABLE", ERR_LIB_CONF, CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE},
+  #else
+    {"NO_CONF_OR_ENVIRONMENT_VARIABLE", 14, 106},
+  #endif
+  #ifdef CONF_R_NO_SECTION
+    {"NO_SECTION", ERR_LIB_CONF, CONF_R_NO_SECTION},
+  #else
+    {"NO_SECTION", 14, 107},
+  #endif
+  #ifdef CONF_R_NO_SUCH_FILE
+    {"NO_SUCH_FILE", ERR_LIB_CONF, CONF_R_NO_SUCH_FILE},
+  #else
+    {"NO_SUCH_FILE", 14, 114},
+  #endif
+  #ifdef CONF_R_NO_VALUE
+    {"NO_VALUE", ERR_LIB_CONF, CONF_R_NO_VALUE},
+  #else
+    {"NO_VALUE", 14, 108},
+  #endif
+  #ifdef CONF_R_NUMBER_TOO_LARGE
+    {"NUMBER_TOO_LARGE", ERR_LIB_CONF, CONF_R_NUMBER_TOO_LARGE},
+  #else
+    {"NUMBER_TOO_LARGE", 14, 121},
+  #endif
+  #ifdef CONF_R_OPENSSL_CONF_REFERENCES_MISSING_SECTION
+    {"OPENSSL_CONF_REFERENCES_MISSING_SECTION", ERR_LIB_CONF, CONF_R_OPENSSL_CONF_REFERENCES_MISSING_SECTION},
+  #else
+    {"OPENSSL_CONF_REFERENCES_MISSING_SECTION", 14, 124},
+  #endif
+  #ifdef CONF_R_RECURSIVE_DIRECTORY_INCLUDE
+    {"RECURSIVE_DIRECTORY_INCLUDE", ERR_LIB_CONF, CONF_R_RECURSIVE_DIRECTORY_INCLUDE},
+  #else
+    {"RECURSIVE_DIRECTORY_INCLUDE", 14, 111},
+  #endif
+  #ifdef CONF_R_RELATIVE_PATH
+    {"RELATIVE_PATH", ERR_LIB_CONF, CONF_R_RELATIVE_PATH},
+  #else
+    {"RELATIVE_PATH", 14, 125},
+  #endif
+  #ifdef CONF_R_SSL_COMMAND_SECTION_EMPTY
+    {"SSL_COMMAND_SECTION_EMPTY", ERR_LIB_CONF, CONF_R_SSL_COMMAND_SECTION_EMPTY},
+  #else
+    {"SSL_COMMAND_SECTION_EMPTY", 14, 117},
+  #endif
+  #ifdef CONF_R_SSL_COMMAND_SECTION_NOT_FOUND
+    {"SSL_COMMAND_SECTION_NOT_FOUND", ERR_LIB_CONF, CONF_R_SSL_COMMAND_SECTION_NOT_FOUND},
+  #else
+    {"SSL_COMMAND_SECTION_NOT_FOUND", 14, 118},
+  #endif
+  #ifdef CONF_R_SSL_SECTION_EMPTY
+    {"SSL_SECTION_EMPTY", ERR_LIB_CONF, CONF_R_SSL_SECTION_EMPTY},
+  #else
+    {"SSL_SECTION_EMPTY", 14, 119},
+  #endif
+  #ifdef CONF_R_SSL_SECTION_NOT_FOUND
+    {"SSL_SECTION_NOT_FOUND", ERR_LIB_CONF, CONF_R_SSL_SECTION_NOT_FOUND},
+  #else
+    {"SSL_SECTION_NOT_FOUND", 14, 120},
+  #endif
+  #ifdef CONF_R_UNABLE_TO_CREATE_NEW_SECTION
+    {"UNABLE_TO_CREATE_NEW_SECTION", ERR_LIB_CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION},
+  #else
+    {"UNABLE_TO_CREATE_NEW_SECTION", 14, 103},
+  #endif
+  #ifdef CONF_R_UNKNOWN_MODULE_NAME
+    {"UNKNOWN_MODULE_NAME", ERR_LIB_CONF, CONF_R_UNKNOWN_MODULE_NAME},
+  #else
+    {"UNKNOWN_MODULE_NAME", 14, 113},
+  #endif
+  #ifdef CONF_R_VARIABLE_EXPANSION_TOO_LONG
+    {"VARIABLE_EXPANSION_TOO_LONG", ERR_LIB_CONF, CONF_R_VARIABLE_EXPANSION_TOO_LONG},
+  #else
+    {"VARIABLE_EXPANSION_TOO_LONG", 14, 116},
+  #endif
+  #ifdef CONF_R_VARIABLE_HAS_NO_VALUE
+    {"VARIABLE_HAS_NO_VALUE", ERR_LIB_CONF, CONF_R_VARIABLE_HAS_NO_VALUE},
+  #else
+    {"VARIABLE_HAS_NO_VALUE", 14, 104},
+  #endif
+  #ifdef CRMF_R_BAD_PBM_ITERATIONCOUNT
+    {"BAD_PBM_ITERATIONCOUNT", ERR_LIB_CRMF, CRMF_R_BAD_PBM_ITERATIONCOUNT},
+  #else
+    {"BAD_PBM_ITERATIONCOUNT", 56, 100},
+  #endif
+  #ifdef CRMF_R_CRMFERROR
+    {"CRMFERROR", ERR_LIB_CRMF, CRMF_R_CRMFERROR},
+  #else
+    {"CRMFERROR", 56, 102},
+  #endif
+  #ifdef CRMF_R_ERROR
+    {"ERROR", ERR_LIB_CRMF, CRMF_R_ERROR},
+  #else
+    {"ERROR", 56, 103},
+  #endif
+  #ifdef CRMF_R_ERROR_DECODING_CERTIFICATE
+    {"ERROR_DECODING_CERTIFICATE", ERR_LIB_CRMF, CRMF_R_ERROR_DECODING_CERTIFICATE},
+  #else
+    {"ERROR_DECODING_CERTIFICATE", 56, 104},
+  #endif
+  #ifdef CRMF_R_ERROR_DECRYPTING_CERTIFICATE
+    {"ERROR_DECRYPTING_CERTIFICATE", ERR_LIB_CRMF, CRMF_R_ERROR_DECRYPTING_CERTIFICATE},
+  #else
+    {"ERROR_DECRYPTING_CERTIFICATE", 56, 105},
+  #endif
+  #ifdef CRMF_R_ERROR_DECRYPTING_SYMMETRIC_KEY
+    {"ERROR_DECRYPTING_SYMMETRIC_KEY", ERR_LIB_CRMF, CRMF_R_ERROR_DECRYPTING_SYMMETRIC_KEY},
+  #else
+    {"ERROR_DECRYPTING_SYMMETRIC_KEY", 56, 106},
+  #endif
+  #ifdef CRMF_R_FAILURE_OBTAINING_RANDOM
+    {"FAILURE_OBTAINING_RANDOM", ERR_LIB_CRMF, CRMF_R_FAILURE_OBTAINING_RANDOM},
+  #else
+    {"FAILURE_OBTAINING_RANDOM", 56, 107},
+  #endif
+  #ifdef CRMF_R_ITERATIONCOUNT_BELOW_100
+    {"ITERATIONCOUNT_BELOW_100", ERR_LIB_CRMF, CRMF_R_ITERATIONCOUNT_BELOW_100},
+  #else
+    {"ITERATIONCOUNT_BELOW_100", 56, 108},
+  #endif
+  #ifdef CRMF_R_MALFORMED_IV
+    {"MALFORMED_IV", ERR_LIB_CRMF, CRMF_R_MALFORMED_IV},
+  #else
+    {"MALFORMED_IV", 56, 101},
+  #endif
+  #ifdef CRMF_R_NULL_ARGUMENT
+    {"NULL_ARGUMENT", ERR_LIB_CRMF, CRMF_R_NULL_ARGUMENT},
+  #else
+    {"NULL_ARGUMENT", 56, 109},
+  #endif
+  #ifdef CRMF_R_POPOSKINPUT_NOT_SUPPORTED
+    {"POPOSKINPUT_NOT_SUPPORTED", ERR_LIB_CRMF, CRMF_R_POPOSKINPUT_NOT_SUPPORTED},
+  #else
+    {"POPOSKINPUT_NOT_SUPPORTED", 56, 113},
+  #endif
+  #ifdef CRMF_R_POPO_INCONSISTENT_PUBLIC_KEY
+    {"POPO_INCONSISTENT_PUBLIC_KEY", ERR_LIB_CRMF, CRMF_R_POPO_INCONSISTENT_PUBLIC_KEY},
+  #else
+    {"POPO_INCONSISTENT_PUBLIC_KEY", 56, 117},
+  #endif
+  #ifdef CRMF_R_POPO_MISSING
+    {"POPO_MISSING", ERR_LIB_CRMF, CRMF_R_POPO_MISSING},
+  #else
+    {"POPO_MISSING", 56, 121},
+  #endif
+  #ifdef CRMF_R_POPO_MISSING_PUBLIC_KEY
+    {"POPO_MISSING_PUBLIC_KEY", ERR_LIB_CRMF, CRMF_R_POPO_MISSING_PUBLIC_KEY},
+  #else
+    {"POPO_MISSING_PUBLIC_KEY", 56, 118},
+  #endif
+  #ifdef CRMF_R_POPO_MISSING_SUBJECT
+    {"POPO_MISSING_SUBJECT", ERR_LIB_CRMF, CRMF_R_POPO_MISSING_SUBJECT},
+  #else
+    {"POPO_MISSING_SUBJECT", 56, 119},
+  #endif
+  #ifdef CRMF_R_POPO_RAVERIFIED_NOT_ACCEPTED
+    {"POPO_RAVERIFIED_NOT_ACCEPTED", ERR_LIB_CRMF, CRMF_R_POPO_RAVERIFIED_NOT_ACCEPTED},
+  #else
+    {"POPO_RAVERIFIED_NOT_ACCEPTED", 56, 120},
+  #endif
+  #ifdef CRMF_R_SETTING_MAC_ALGOR_FAILURE
+    {"SETTING_MAC_ALGOR_FAILURE", ERR_LIB_CRMF, CRMF_R_SETTING_MAC_ALGOR_FAILURE},
+  #else
+    {"SETTING_MAC_ALGOR_FAILURE", 56, 110},
+  #endif
+  #ifdef CRMF_R_SETTING_OWF_ALGOR_FAILURE
+    {"SETTING_OWF_ALGOR_FAILURE", ERR_LIB_CRMF, CRMF_R_SETTING_OWF_ALGOR_FAILURE},
+  #else
+    {"SETTING_OWF_ALGOR_FAILURE", 56, 111},
+  #endif
+  #ifdef CRMF_R_UNSUPPORTED_ALGORITHM
+    {"UNSUPPORTED_ALGORITHM", ERR_LIB_CRMF, CRMF_R_UNSUPPORTED_ALGORITHM},
+  #else
+    {"UNSUPPORTED_ALGORITHM", 56, 112},
+  #endif
+  #ifdef CRMF_R_UNSUPPORTED_CIPHER
+    {"UNSUPPORTED_CIPHER", ERR_LIB_CRMF, CRMF_R_UNSUPPORTED_CIPHER},
+  #else
+    {"UNSUPPORTED_CIPHER", 56, 114},
+  #endif
+  #ifdef CRMF_R_UNSUPPORTED_METHOD_FOR_CREATING_POPO
+    {"UNSUPPORTED_METHOD_FOR_CREATING_POPO", ERR_LIB_CRMF, CRMF_R_UNSUPPORTED_METHOD_FOR_CREATING_POPO},
+  #else
+    {"UNSUPPORTED_METHOD_FOR_CREATING_POPO", 56, 115},
+  #endif
+  #ifdef CRMF_R_UNSUPPORTED_POPO_METHOD
+    {"UNSUPPORTED_POPO_METHOD", ERR_LIB_CRMF, CRMF_R_UNSUPPORTED_POPO_METHOD},
+  #else
+    {"UNSUPPORTED_POPO_METHOD", 56, 116},
+  #endif
+  #ifdef CRYPTO_R_BAD_ALGORITHM_NAME
+    {"BAD_ALGORITHM_NAME", ERR_LIB_CRYPTO, CRYPTO_R_BAD_ALGORITHM_NAME},
+  #else
+    {"BAD_ALGORITHM_NAME", 15, 117},
+  #endif
+  #ifdef CRYPTO_R_CONFLICTING_NAMES
+    {"CONFLICTING_NAMES", ERR_LIB_CRYPTO, CRYPTO_R_CONFLICTING_NAMES},
+  #else
+    {"CONFLICTING_NAMES", 15, 118},
+  #endif
+  #ifdef CRYPTO_R_HEX_STRING_TOO_SHORT
+    {"HEX_STRING_TOO_SHORT", ERR_LIB_CRYPTO, CRYPTO_R_HEX_STRING_TOO_SHORT},
+  #else
+    {"HEX_STRING_TOO_SHORT", 15, 121},
+  #endif
+  #ifdef CRYPTO_R_ILLEGAL_HEX_DIGIT
+    {"ILLEGAL_HEX_DIGIT", ERR_LIB_CRYPTO, CRYPTO_R_ILLEGAL_HEX_DIGIT},
+  #else
+    {"ILLEGAL_HEX_DIGIT", 15, 102},
+  #endif
+  #ifdef CRYPTO_R_INSUFFICIENT_DATA_SPACE
+    {"INSUFFICIENT_DATA_SPACE", ERR_LIB_CRYPTO, CRYPTO_R_INSUFFICIENT_DATA_SPACE},
+  #else
+    {"INSUFFICIENT_DATA_SPACE", 15, 106},
+  #endif
+  #ifdef CRYPTO_R_INSUFFICIENT_PARAM_SIZE
+    {"INSUFFICIENT_PARAM_SIZE", ERR_LIB_CRYPTO, CRYPTO_R_INSUFFICIENT_PARAM_SIZE},
+  #else
+    {"INSUFFICIENT_PARAM_SIZE", 15, 107},
+  #endif
+  #ifdef CRYPTO_R_INSUFFICIENT_SECURE_DATA_SPACE
+    {"INSUFFICIENT_SECURE_DATA_SPACE", ERR_LIB_CRYPTO, CRYPTO_R_INSUFFICIENT_SECURE_DATA_SPACE},
+  #else
+    {"INSUFFICIENT_SECURE_DATA_SPACE", 15, 108},
+  #endif
+  #ifdef CRYPTO_R_INTEGER_OVERFLOW
+    {"INTEGER_OVERFLOW", ERR_LIB_CRYPTO, CRYPTO_R_INTEGER_OVERFLOW},
+  #else
+    {"INTEGER_OVERFLOW", 15, 127},
+  #endif
+  #ifdef CRYPTO_R_INVALID_NEGATIVE_VALUE
+    {"INVALID_NEGATIVE_VALUE", ERR_LIB_CRYPTO, CRYPTO_R_INVALID_NEGATIVE_VALUE},
+  #else
+    {"INVALID_NEGATIVE_VALUE", 15, 122},
+  #endif
+  #ifdef CRYPTO_R_INVALID_NULL_ARGUMENT
+    {"INVALID_NULL_ARGUMENT", ERR_LIB_CRYPTO, CRYPTO_R_INVALID_NULL_ARGUMENT},
+  #else
+    {"INVALID_NULL_ARGUMENT", 15, 109},
+  #endif
+  #ifdef CRYPTO_R_INVALID_OSSL_PARAM_TYPE
+    {"INVALID_OSSL_PARAM_TYPE", ERR_LIB_CRYPTO, CRYPTO_R_INVALID_OSSL_PARAM_TYPE},
+  #else
+    {"INVALID_OSSL_PARAM_TYPE", 15, 110},
+  #endif
+  #ifdef CRYPTO_R_NO_PARAMS_TO_MERGE
+    {"NO_PARAMS_TO_MERGE", ERR_LIB_CRYPTO, CRYPTO_R_NO_PARAMS_TO_MERGE},
+  #else
+    {"NO_PARAMS_TO_MERGE", 15, 131},
+  #endif
+  #ifdef CRYPTO_R_NO_SPACE_FOR_TERMINATING_NULL
+    {"NO_SPACE_FOR_TERMINATING_NULL", ERR_LIB_CRYPTO, CRYPTO_R_NO_SPACE_FOR_TERMINATING_NULL},
+  #else
+    {"NO_SPACE_FOR_TERMINATING_NULL", 15, 128},
+  #endif
+  #ifdef CRYPTO_R_ODD_NUMBER_OF_DIGITS
+    {"ODD_NUMBER_OF_DIGITS", ERR_LIB_CRYPTO, CRYPTO_R_ODD_NUMBER_OF_DIGITS},
+  #else
+    {"ODD_NUMBER_OF_DIGITS", 15, 103},
+  #endif
+  #ifdef CRYPTO_R_PARAM_CANNOT_BE_REPRESENTED_EXACTLY
+    {"PARAM_CANNOT_BE_REPRESENTED_EXACTLY", ERR_LIB_CRYPTO, CRYPTO_R_PARAM_CANNOT_BE_REPRESENTED_EXACTLY},
+  #else
+    {"PARAM_CANNOT_BE_REPRESENTED_EXACTLY", 15, 123},
+  #endif
+  #ifdef CRYPTO_R_PARAM_NOT_INTEGER_TYPE
+    {"PARAM_NOT_INTEGER_TYPE", ERR_LIB_CRYPTO, CRYPTO_R_PARAM_NOT_INTEGER_TYPE},
+  #else
+    {"PARAM_NOT_INTEGER_TYPE", 15, 124},
+  #endif
+  #ifdef CRYPTO_R_PARAM_OF_INCOMPATIBLE_TYPE
+    {"PARAM_OF_INCOMPATIBLE_TYPE", ERR_LIB_CRYPTO, CRYPTO_R_PARAM_OF_INCOMPATIBLE_TYPE},
+  #else
+    {"PARAM_OF_INCOMPATIBLE_TYPE", 15, 129},
+  #endif
+  #ifdef CRYPTO_R_PARAM_UNSIGNED_INTEGER_NEGATIVE_VALUE_UNSUPPORTED
+    {"PARAM_UNSIGNED_INTEGER_NEGATIVE_VALUE_UNSUPPORTED", ERR_LIB_CRYPTO, CRYPTO_R_PARAM_UNSIGNED_INTEGER_NEGATIVE_VALUE_UNSUPPORTED},
+  #else
+    {"PARAM_UNSIGNED_INTEGER_NEGATIVE_VALUE_UNSUPPORTED", 15, 125},
+  #endif
+  #ifdef CRYPTO_R_PARAM_UNSUPPORTED_FLOATING_POINT_FORMAT
+    {"PARAM_UNSUPPORTED_FLOATING_POINT_FORMAT", ERR_LIB_CRYPTO, CRYPTO_R_PARAM_UNSUPPORTED_FLOATING_POINT_FORMAT},
+  #else
+    {"PARAM_UNSUPPORTED_FLOATING_POINT_FORMAT", 15, 130},
+  #endif
+  #ifdef CRYPTO_R_PARAM_VALUE_TOO_LARGE_FOR_DESTINATION
+    {"PARAM_VALUE_TOO_LARGE_FOR_DESTINATION", ERR_LIB_CRYPTO, CRYPTO_R_PARAM_VALUE_TOO_LARGE_FOR_DESTINATION},
+  #else
+    {"PARAM_VALUE_TOO_LARGE_FOR_DESTINATION", 15, 126},
+  #endif
+  #ifdef CRYPTO_R_PROVIDER_ALREADY_EXISTS
+    {"PROVIDER_ALREADY_EXISTS", ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_ALREADY_EXISTS},
+  #else
+    {"PROVIDER_ALREADY_EXISTS", 15, 104},
+  #endif
+  #ifdef CRYPTO_R_PROVIDER_SECTION_ERROR
+    {"PROVIDER_SECTION_ERROR", ERR_LIB_CRYPTO, CRYPTO_R_PROVIDER_SECTION_ERROR},
+  #else
+    {"PROVIDER_SECTION_ERROR", 15, 105},
+  #endif
+  #ifdef CRYPTO_R_RANDOM_SECTION_ERROR
+    {"RANDOM_SECTION_ERROR", ERR_LIB_CRYPTO, CRYPTO_R_RANDOM_SECTION_ERROR},
+  #else
+    {"RANDOM_SECTION_ERROR", 15, 119},
+  #endif
+  #ifdef CRYPTO_R_SECURE_MALLOC_FAILURE
+    {"SECURE_MALLOC_FAILURE", ERR_LIB_CRYPTO, CRYPTO_R_SECURE_MALLOC_FAILURE},
+  #else
+    {"SECURE_MALLOC_FAILURE", 15, 111},
+  #endif
+  #ifdef CRYPTO_R_STRING_TOO_LONG
+    {"STRING_TOO_LONG", ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG},
+  #else
+    {"STRING_TOO_LONG", 15, 112},
+  #endif
+  #ifdef CRYPTO_R_TOO_MANY_BYTES
+    {"TOO_MANY_BYTES", ERR_LIB_CRYPTO, CRYPTO_R_TOO_MANY_BYTES},
+  #else
+    {"TOO_MANY_BYTES", 15, 113},
+  #endif
+  #ifdef CRYPTO_R_TOO_MANY_RECORDS
+    {"TOO_MANY_RECORDS", ERR_LIB_CRYPTO, CRYPTO_R_TOO_MANY_RECORDS},
+  #else
+    {"TOO_MANY_RECORDS", 15, 114},
+  #endif
+  #ifdef CRYPTO_R_TOO_SMALL_BUFFER
+    {"TOO_SMALL_BUFFER", ERR_LIB_CRYPTO, CRYPTO_R_TOO_SMALL_BUFFER},
+  #else
+    {"TOO_SMALL_BUFFER", 15, 116},
+  #endif
+  #ifdef CRYPTO_R_UNKNOWN_NAME_IN_RANDOM_SECTION
+    {"UNKNOWN_NAME_IN_RANDOM_SECTION", ERR_LIB_CRYPTO, CRYPTO_R_UNKNOWN_NAME_IN_RANDOM_SECTION},
+  #else
+    {"UNKNOWN_NAME_IN_RANDOM_SECTION", 15, 120},
+  #endif
+  #ifdef CRYPTO_R_ZERO_LENGTH_NUMBER
+    {"ZERO_LENGTH_NUMBER", ERR_LIB_CRYPTO, CRYPTO_R_ZERO_LENGTH_NUMBER},
+  #else
+    {"ZERO_LENGTH_NUMBER", 15, 115},
+  #endif
+  #ifdef CT_R_BASE64_DECODE_ERROR
+    {"BASE64_DECODE_ERROR", ERR_LIB_CT, CT_R_BASE64_DECODE_ERROR},
+  #else
+    {"BASE64_DECODE_ERROR", 50, 108},
+  #endif
+  #ifdef CT_R_INVALID_LOG_ID_LENGTH
+    {"INVALID_LOG_ID_LENGTH", ERR_LIB_CT, CT_R_INVALID_LOG_ID_LENGTH},
+  #else
+    {"INVALID_LOG_ID_LENGTH", 50, 100},
+  #endif
+  #ifdef CT_R_LOG_CONF_INVALID
+    {"LOG_CONF_INVALID", ERR_LIB_CT, CT_R_LOG_CONF_INVALID},
+  #else
+    {"LOG_CONF_INVALID", 50, 109},
+  #endif
+  #ifdef CT_R_LOG_CONF_INVALID_KEY
+    {"LOG_CONF_INVALID_KEY", ERR_LIB_CT, CT_R_LOG_CONF_INVALID_KEY},
+  #else
+    {"LOG_CONF_INVALID_KEY", 50, 110},
+  #endif
+  #ifdef CT_R_LOG_CONF_MISSING_DESCRIPTION
+    {"LOG_CONF_MISSING_DESCRIPTION", ERR_LIB_CT, CT_R_LOG_CONF_MISSING_DESCRIPTION},
+  #else
+    {"LOG_CONF_MISSING_DESCRIPTION", 50, 111},
+  #endif
+  #ifdef CT_R_LOG_CONF_MISSING_KEY
+    {"LOG_CONF_MISSING_KEY", ERR_LIB_CT, CT_R_LOG_CONF_MISSING_KEY},
+  #else
+    {"LOG_CONF_MISSING_KEY", 50, 112},
+  #endif
+  #ifdef CT_R_LOG_KEY_INVALID
+    {"LOG_KEY_INVALID", ERR_LIB_CT, CT_R_LOG_KEY_INVALID},
+  #else
+    {"LOG_KEY_INVALID", 50, 113},
+  #endif
+  #ifdef CT_R_SCT_FUTURE_TIMESTAMP
+    {"SCT_FUTURE_TIMESTAMP", ERR_LIB_CT, CT_R_SCT_FUTURE_TIMESTAMP},
+  #else
+    {"SCT_FUTURE_TIMESTAMP", 50, 116},
+  #endif
+  #ifdef CT_R_SCT_INVALID
+    {"SCT_INVALID", ERR_LIB_CT, CT_R_SCT_INVALID},
+  #else
+    {"SCT_INVALID", 50, 104},
+  #endif
+  #ifdef CT_R_SCT_INVALID_SIGNATURE
+    {"SCT_INVALID_SIGNATURE", ERR_LIB_CT, CT_R_SCT_INVALID_SIGNATURE},
+  #else
+    {"SCT_INVALID_SIGNATURE", 50, 107},
+  #endif
+  #ifdef CT_R_SCT_LIST_INVALID
+    {"SCT_LIST_INVALID", ERR_LIB_CT, CT_R_SCT_LIST_INVALID},
+  #else
+    {"SCT_LIST_INVALID", 50, 105},
+  #endif
+  #ifdef CT_R_SCT_LOG_ID_MISMATCH
+    {"SCT_LOG_ID_MISMATCH", ERR_LIB_CT, CT_R_SCT_LOG_ID_MISMATCH},
+  #else
+    {"SCT_LOG_ID_MISMATCH", 50, 114},
+  #endif
+  #ifdef CT_R_SCT_NOT_SET
+    {"SCT_NOT_SET", ERR_LIB_CT, CT_R_SCT_NOT_SET},
+  #else
+    {"SCT_NOT_SET", 50, 106},
+  #endif
+  #ifdef CT_R_SCT_UNSUPPORTED_VERSION
+    {"SCT_UNSUPPORTED_VERSION", ERR_LIB_CT, CT_R_SCT_UNSUPPORTED_VERSION},
+  #else
+    {"SCT_UNSUPPORTED_VERSION", 50, 115},
+  #endif
+  #ifdef CT_R_UNRECOGNIZED_SIGNATURE_NID
+    {"UNRECOGNIZED_SIGNATURE_NID", ERR_LIB_CT, CT_R_UNRECOGNIZED_SIGNATURE_NID},
+  #else
+    {"UNRECOGNIZED_SIGNATURE_NID", 50, 101},
+  #endif
+  #ifdef CT_R_UNSUPPORTED_ENTRY_TYPE
+    {"UNSUPPORTED_ENTRY_TYPE", ERR_LIB_CT, CT_R_UNSUPPORTED_ENTRY_TYPE},
+  #else
+    {"UNSUPPORTED_ENTRY_TYPE", 50, 102},
+  #endif
+  #ifdef CT_R_UNSUPPORTED_VERSION
+    {"UNSUPPORTED_VERSION", ERR_LIB_CT, CT_R_UNSUPPORTED_VERSION},
+  #else
+    {"UNSUPPORTED_VERSION", 50, 103},
+  #endif
+  #ifdef DH_R_BAD_FFC_PARAMETERS
+    {"BAD_FFC_PARAMETERS", ERR_LIB_DH, DH_R_BAD_FFC_PARAMETERS},
+  #else
+    {"BAD_FFC_PARAMETERS", 5, 127},
+  #endif
+  #ifdef DH_R_BAD_GENERATOR
+    {"BAD_GENERATOR", ERR_LIB_DH, DH_R_BAD_GENERATOR},
+  #else
+    {"BAD_GENERATOR", 5, 101},
+  #endif
+  #ifdef DH_R_BN_DECODE_ERROR
+    {"BN_DECODE_ERROR", ERR_LIB_DH, DH_R_BN_DECODE_ERROR},
+  #else
+    {"BN_DECODE_ERROR", 5, 109},
+  #endif
+  #ifdef DH_R_BN_ERROR
+    {"BN_ERROR", ERR_LIB_DH, DH_R_BN_ERROR},
+  #else
+    {"BN_ERROR", 5, 106},
+  #endif
+  #ifdef DH_R_CHECK_INVALID_J_VALUE
+    {"CHECK_INVALID_J_VALUE", ERR_LIB_DH, DH_R_CHECK_INVALID_J_VALUE},
+  #else
+    {"CHECK_INVALID_J_VALUE", 5, 115},
+  #endif
+  #ifdef DH_R_CHECK_INVALID_Q_VALUE
+    {"CHECK_INVALID_Q_VALUE", ERR_LIB_DH, DH_R_CHECK_INVALID_Q_VALUE},
+  #else
+    {"CHECK_INVALID_Q_VALUE", 5, 116},
+  #endif
+  #ifdef DH_R_CHECK_PUBKEY_INVALID
+    {"CHECK_PUBKEY_INVALID", ERR_LIB_DH, DH_R_CHECK_PUBKEY_INVALID},
+  #else
+    {"CHECK_PUBKEY_INVALID", 5, 122},
+  #endif
+  #ifdef DH_R_CHECK_PUBKEY_TOO_LARGE
+    {"CHECK_PUBKEY_TOO_LARGE", ERR_LIB_DH, DH_R_CHECK_PUBKEY_TOO_LARGE},
+  #else
+    {"CHECK_PUBKEY_TOO_LARGE", 5, 123},
+  #endif
+  #ifdef DH_R_CHECK_PUBKEY_TOO_SMALL
+    {"CHECK_PUBKEY_TOO_SMALL", ERR_LIB_DH, DH_R_CHECK_PUBKEY_TOO_SMALL},
+  #else
+    {"CHECK_PUBKEY_TOO_SMALL", 5, 124},
+  #endif
+  #ifdef DH_R_CHECK_P_NOT_PRIME
+    {"CHECK_P_NOT_PRIME", ERR_LIB_DH, DH_R_CHECK_P_NOT_PRIME},
+  #else
+    {"CHECK_P_NOT_PRIME", 5, 117},
+  #endif
+  #ifdef DH_R_CHECK_P_NOT_SAFE_PRIME
+    {"CHECK_P_NOT_SAFE_PRIME", ERR_LIB_DH, DH_R_CHECK_P_NOT_SAFE_PRIME},
+  #else
+    {"CHECK_P_NOT_SAFE_PRIME", 5, 118},
+  #endif
+  #ifdef DH_R_CHECK_Q_NOT_PRIME
+    {"CHECK_Q_NOT_PRIME", ERR_LIB_DH, DH_R_CHECK_Q_NOT_PRIME},
+  #else
+    {"CHECK_Q_NOT_PRIME", 5, 119},
+  #endif
+  #ifdef DH_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_DH, DH_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 5, 104},
+  #endif
+  #ifdef DH_R_INVALID_PARAMETER_NAME
+    {"INVALID_PARAMETER_NAME", ERR_LIB_DH, DH_R_INVALID_PARAMETER_NAME},
+  #else
+    {"INVALID_PARAMETER_NAME", 5, 110},
+  #endif
+  #ifdef DH_R_INVALID_PARAMETER_NID
+    {"INVALID_PARAMETER_NID", ERR_LIB_DH, DH_R_INVALID_PARAMETER_NID},
+  #else
+    {"INVALID_PARAMETER_NID", 5, 114},
+  #endif
+  #ifdef DH_R_INVALID_PUBKEY
+    {"INVALID_PUBKEY", ERR_LIB_DH, DH_R_INVALID_PUBKEY},
+  #else
+    {"INVALID_PUBKEY", 5, 102},
+  #endif
+  #ifdef DH_R_INVALID_SECRET
+    {"INVALID_SECRET", ERR_LIB_DH, DH_R_INVALID_SECRET},
+  #else
+    {"INVALID_SECRET", 5, 128},
+  #endif
+  #ifdef DH_R_KDF_PARAMETER_ERROR
+    {"KDF_PARAMETER_ERROR", ERR_LIB_DH, DH_R_KDF_PARAMETER_ERROR},
+  #else
+    {"KDF_PARAMETER_ERROR", 5, 112},
+  #endif
+  #ifdef DH_R_KEYS_NOT_SET
+    {"KEYS_NOT_SET", ERR_LIB_DH, DH_R_KEYS_NOT_SET},
+  #else
+    {"KEYS_NOT_SET", 5, 108},
+  #endif
+  #ifdef DH_R_MISSING_PUBKEY
+    {"MISSING_PUBKEY", ERR_LIB_DH, DH_R_MISSING_PUBKEY},
+  #else
+    {"MISSING_PUBKEY", 5, 125},
+  #endif
+  #ifdef DH_R_MODULUS_TOO_LARGE
+    {"MODULUS_TOO_LARGE", ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE},
+  #else
+    {"MODULUS_TOO_LARGE", 5, 103},
+  #endif
+  #ifdef DH_R_MODULUS_TOO_SMALL
+    {"MODULUS_TOO_SMALL", ERR_LIB_DH, DH_R_MODULUS_TOO_SMALL},
+  #else
+    {"MODULUS_TOO_SMALL", 5, 126},
+  #endif
+  #ifdef DH_R_NOT_SUITABLE_GENERATOR
+    {"NOT_SUITABLE_GENERATOR", ERR_LIB_DH, DH_R_NOT_SUITABLE_GENERATOR},
+  #else
+    {"NOT_SUITABLE_GENERATOR", 5, 120},
+  #endif
+  #ifdef DH_R_NO_PARAMETERS_SET
+    {"NO_PARAMETERS_SET", ERR_LIB_DH, DH_R_NO_PARAMETERS_SET},
+  #else
+    {"NO_PARAMETERS_SET", 5, 107},
+  #endif
+  #ifdef DH_R_NO_PRIVATE_VALUE
+    {"NO_PRIVATE_VALUE", ERR_LIB_DH, DH_R_NO_PRIVATE_VALUE},
+  #else
+    {"NO_PRIVATE_VALUE", 5, 100},
+  #endif
+  #ifdef DH_R_PARAMETER_ENCODING_ERROR
+    {"PARAMETER_ENCODING_ERROR", ERR_LIB_DH, DH_R_PARAMETER_ENCODING_ERROR},
+  #else
+    {"PARAMETER_ENCODING_ERROR", 5, 105},
+  #endif
+  #ifdef DH_R_PEER_KEY_ERROR
+    {"PEER_KEY_ERROR", ERR_LIB_DH, DH_R_PEER_KEY_ERROR},
+  #else
+    {"PEER_KEY_ERROR", 5, 111},
+  #endif
+  #ifdef DH_R_SHARED_INFO_ERROR
+    {"SHARED_INFO_ERROR", ERR_LIB_DH, DH_R_SHARED_INFO_ERROR},
+  #else
+    {"SHARED_INFO_ERROR", 5, 113},
+  #endif
+  #ifdef DH_R_UNABLE_TO_CHECK_GENERATOR
+    {"UNABLE_TO_CHECK_GENERATOR", ERR_LIB_DH, DH_R_UNABLE_TO_CHECK_GENERATOR},
+  #else
+    {"UNABLE_TO_CHECK_GENERATOR", 5, 121},
+  #endif
+  #ifdef DSA_R_BAD_FFC_PARAMETERS
+    {"BAD_FFC_PARAMETERS", ERR_LIB_DSA, DSA_R_BAD_FFC_PARAMETERS},
+  #else
+    {"BAD_FFC_PARAMETERS", 10, 114},
+  #endif
+  #ifdef DSA_R_BAD_Q_VALUE
+    {"BAD_Q_VALUE", ERR_LIB_DSA, DSA_R_BAD_Q_VALUE},
+  #else
+    {"BAD_Q_VALUE", 10, 102},
+  #endif
+  #ifdef DSA_R_BN_DECODE_ERROR
+    {"BN_DECODE_ERROR", ERR_LIB_DSA, DSA_R_BN_DECODE_ERROR},
+  #else
+    {"BN_DECODE_ERROR", 10, 108},
+  #endif
+  #ifdef DSA_R_BN_ERROR
+    {"BN_ERROR", ERR_LIB_DSA, DSA_R_BN_ERROR},
+  #else
+    {"BN_ERROR", 10, 109},
+  #endif
+  #ifdef DSA_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_DSA, DSA_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 10, 104},
+  #endif
+  #ifdef DSA_R_INVALID_DIGEST_TYPE
+    {"INVALID_DIGEST_TYPE", ERR_LIB_DSA, DSA_R_INVALID_DIGEST_TYPE},
+  #else
+    {"INVALID_DIGEST_TYPE", 10, 106},
+  #endif
+  #ifdef DSA_R_INVALID_PARAMETERS
+    {"INVALID_PARAMETERS", ERR_LIB_DSA, DSA_R_INVALID_PARAMETERS},
+  #else
+    {"INVALID_PARAMETERS", 10, 112},
+  #endif
+  #ifdef DSA_R_MISSING_PARAMETERS
+    {"MISSING_PARAMETERS", ERR_LIB_DSA, DSA_R_MISSING_PARAMETERS},
+  #else
+    {"MISSING_PARAMETERS", 10, 101},
+  #endif
+  #ifdef DSA_R_MISSING_PRIVATE_KEY
+    {"MISSING_PRIVATE_KEY", ERR_LIB_DSA, DSA_R_MISSING_PRIVATE_KEY},
+  #else
+    {"MISSING_PRIVATE_KEY", 10, 111},
+  #endif
+  #ifdef DSA_R_MODULUS_TOO_LARGE
+    {"MODULUS_TOO_LARGE", ERR_LIB_DSA, DSA_R_MODULUS_TOO_LARGE},
+  #else
+    {"MODULUS_TOO_LARGE", 10, 103},
+  #endif
+  #ifdef DSA_R_NO_PARAMETERS_SET
+    {"NO_PARAMETERS_SET", ERR_LIB_DSA, DSA_R_NO_PARAMETERS_SET},
+  #else
+    {"NO_PARAMETERS_SET", 10, 107},
+  #endif
+  #ifdef DSA_R_PARAMETER_ENCODING_ERROR
+    {"PARAMETER_ENCODING_ERROR", ERR_LIB_DSA, DSA_R_PARAMETER_ENCODING_ERROR},
+  #else
+    {"PARAMETER_ENCODING_ERROR", 10, 105},
+  #endif
+  #ifdef DSA_R_P_NOT_PRIME
+    {"P_NOT_PRIME", ERR_LIB_DSA, DSA_R_P_NOT_PRIME},
+  #else
+    {"P_NOT_PRIME", 10, 115},
+  #endif
+  #ifdef DSA_R_Q_NOT_PRIME
+    {"Q_NOT_PRIME", ERR_LIB_DSA, DSA_R_Q_NOT_PRIME},
+  #else
+    {"Q_NOT_PRIME", 10, 113},
+  #endif
+  #ifdef DSA_R_SEED_LEN_SMALL
+    {"SEED_LEN_SMALL", ERR_LIB_DSA, DSA_R_SEED_LEN_SMALL},
+  #else
+    {"SEED_LEN_SMALL", 10, 110},
+  #endif
+  #ifdef DSA_R_TOO_MANY_RETRIES
+    {"TOO_MANY_RETRIES", ERR_LIB_DSA, DSA_R_TOO_MANY_RETRIES},
+  #else
+    {"TOO_MANY_RETRIES", 10, 116},
+  #endif
+  #ifdef DSO_R_CTRL_FAILED
+    {"CTRL_FAILED", ERR_LIB_DSO, DSO_R_CTRL_FAILED},
+  #else
+    {"CTRL_FAILED", 37, 100},
+  #endif
+  #ifdef DSO_R_DSO_ALREADY_LOADED
+    {"DSO_ALREADY_LOADED", ERR_LIB_DSO, DSO_R_DSO_ALREADY_LOADED},
+  #else
+    {"DSO_ALREADY_LOADED", 37, 110},
+  #endif
+  #ifdef DSO_R_EMPTY_FILE_STRUCTURE
+    {"EMPTY_FILE_STRUCTURE", ERR_LIB_DSO, DSO_R_EMPTY_FILE_STRUCTURE},
+  #else
+    {"EMPTY_FILE_STRUCTURE", 37, 113},
+  #endif
+  #ifdef DSO_R_FAILURE
+    {"FAILURE", ERR_LIB_DSO, DSO_R_FAILURE},
+  #else
+    {"FAILURE", 37, 114},
+  #endif
+  #ifdef DSO_R_FILENAME_TOO_BIG
+    {"FILENAME_TOO_BIG", ERR_LIB_DSO, DSO_R_FILENAME_TOO_BIG},
+  #else
+    {"FILENAME_TOO_BIG", 37, 101},
+  #endif
+  #ifdef DSO_R_FINISH_FAILED
+    {"FINISH_FAILED", ERR_LIB_DSO, DSO_R_FINISH_FAILED},
+  #else
+    {"FINISH_FAILED", 37, 102},
+  #endif
+  #ifdef DSO_R_INCORRECT_FILE_SYNTAX
+    {"INCORRECT_FILE_SYNTAX", ERR_LIB_DSO, DSO_R_INCORRECT_FILE_SYNTAX},
+  #else
+    {"INCORRECT_FILE_SYNTAX", 37, 115},
+  #endif
+  #ifdef DSO_R_LOAD_FAILED
+    {"LOAD_FAILED", ERR_LIB_DSO, DSO_R_LOAD_FAILED},
+  #else
+    {"LOAD_FAILED", 37, 103},
+  #endif
+  #ifdef DSO_R_NAME_TRANSLATION_FAILED
+    {"NAME_TRANSLATION_FAILED", ERR_LIB_DSO, DSO_R_NAME_TRANSLATION_FAILED},
+  #else
+    {"NAME_TRANSLATION_FAILED", 37, 109},
+  #endif
+  #ifdef DSO_R_NO_FILENAME
+    {"NO_FILENAME", ERR_LIB_DSO, DSO_R_NO_FILENAME},
+  #else
+    {"NO_FILENAME", 37, 111},
+  #endif
+  #ifdef DSO_R_NULL_HANDLE
+    {"NULL_HANDLE", ERR_LIB_DSO, DSO_R_NULL_HANDLE},
+  #else
+    {"NULL_HANDLE", 37, 104},
+  #endif
+  #ifdef DSO_R_SET_FILENAME_FAILED
+    {"SET_FILENAME_FAILED", ERR_LIB_DSO, DSO_R_SET_FILENAME_FAILED},
+  #else
+    {"SET_FILENAME_FAILED", 37, 112},
+  #endif
+  #ifdef DSO_R_STACK_ERROR
+    {"STACK_ERROR", ERR_LIB_DSO, DSO_R_STACK_ERROR},
+  #else
+    {"STACK_ERROR", 37, 105},
+  #endif
+  #ifdef DSO_R_SYM_FAILURE
+    {"SYM_FAILURE", ERR_LIB_DSO, DSO_R_SYM_FAILURE},
+  #else
+    {"SYM_FAILURE", 37, 106},
+  #endif
+  #ifdef DSO_R_UNLOAD_FAILED
+    {"UNLOAD_FAILED", ERR_LIB_DSO, DSO_R_UNLOAD_FAILED},
+  #else
+    {"UNLOAD_FAILED", 37, 107},
+  #endif
+  #ifdef DSO_R_UNSUPPORTED
+    {"UNSUPPORTED", ERR_LIB_DSO, DSO_R_UNSUPPORTED},
+  #else
+    {"UNSUPPORTED", 37, 108},
+  #endif
+  #ifdef EC_R_ASN1_ERROR
+    {"ASN1_ERROR", ERR_LIB_EC, EC_R_ASN1_ERROR},
+  #else
+    {"ASN1_ERROR", 16, 115},
+  #endif
+  #ifdef EC_R_BAD_SIGNATURE
+    {"BAD_SIGNATURE", ERR_LIB_EC, EC_R_BAD_SIGNATURE},
+  #else
+    {"BAD_SIGNATURE", 16, 156},
+  #endif
+  #ifdef EC_R_BIGNUM_OUT_OF_RANGE
+    {"BIGNUM_OUT_OF_RANGE", ERR_LIB_EC, EC_R_BIGNUM_OUT_OF_RANGE},
+  #else
+    {"BIGNUM_OUT_OF_RANGE", 16, 144},
+  #endif
+  #ifdef EC_R_BUFFER_TOO_SMALL
+    {"BUFFER_TOO_SMALL", ERR_LIB_EC, EC_R_BUFFER_TOO_SMALL},
+  #else
+    {"BUFFER_TOO_SMALL", 16, 100},
+  #endif
+  #ifdef EC_R_CANNOT_INVERT
+    {"CANNOT_INVERT", ERR_LIB_EC, EC_R_CANNOT_INVERT},
+  #else
+    {"CANNOT_INVERT", 16, 165},
+  #endif
+  #ifdef EC_R_COORDINATES_OUT_OF_RANGE
+    {"COORDINATES_OUT_OF_RANGE", ERR_LIB_EC, EC_R_COORDINATES_OUT_OF_RANGE},
+  #else
+    {"COORDINATES_OUT_OF_RANGE", 16, 146},
+  #endif
+  #ifdef EC_R_CURVE_DOES_NOT_SUPPORT_ECDH
+    {"CURVE_DOES_NOT_SUPPORT_ECDH", ERR_LIB_EC, EC_R_CURVE_DOES_NOT_SUPPORT_ECDH},
+  #else
+    {"CURVE_DOES_NOT_SUPPORT_ECDH", 16, 160},
+  #endif
+  #ifdef EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA
+    {"CURVE_DOES_NOT_SUPPORT_ECDSA", ERR_LIB_EC, EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA},
+  #else
+    {"CURVE_DOES_NOT_SUPPORT_ECDSA", 16, 170},
+  #endif
+  #ifdef EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING
+    {"CURVE_DOES_NOT_SUPPORT_SIGNING", ERR_LIB_EC, EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING},
+  #else
+    {"CURVE_DOES_NOT_SUPPORT_SIGNING", 16, 159},
+  #endif
+  #ifdef EC_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_EC, EC_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 16, 142},
+  #endif
+  #ifdef EC_R_DISCRIMINANT_IS_ZERO
+    {"DISCRIMINANT_IS_ZERO", ERR_LIB_EC, EC_R_DISCRIMINANT_IS_ZERO},
+  #else
+    {"DISCRIMINANT_IS_ZERO", 16, 118},
+  #endif
+  #ifdef EC_R_EC_GROUP_NEW_BY_NAME_FAILURE
+    {"EC_GROUP_NEW_BY_NAME_FAILURE", ERR_LIB_EC, EC_R_EC_GROUP_NEW_BY_NAME_FAILURE},
+  #else
+    {"EC_GROUP_NEW_BY_NAME_FAILURE", 16, 119},
+  #endif
+  #ifdef EC_R_EXPLICIT_PARAMS_NOT_SUPPORTED
+    {"EXPLICIT_PARAMS_NOT_SUPPORTED", ERR_LIB_EC, EC_R_EXPLICIT_PARAMS_NOT_SUPPORTED},
+  #else
+    {"EXPLICIT_PARAMS_NOT_SUPPORTED", 16, 127},
+  #endif
+  #ifdef EC_R_FAILED_MAKING_PUBLIC_KEY
+    {"FAILED_MAKING_PUBLIC_KEY", ERR_LIB_EC, EC_R_FAILED_MAKING_PUBLIC_KEY},
+  #else
+    {"FAILED_MAKING_PUBLIC_KEY", 16, 166},
+  #endif
+  #ifdef EC_R_FIELD_TOO_LARGE
+    {"FIELD_TOO_LARGE", ERR_LIB_EC, EC_R_FIELD_TOO_LARGE},
+  #else
+    {"FIELD_TOO_LARGE", 16, 143},
+  #endif
+  #ifdef EC_R_GF2M_NOT_SUPPORTED
+    {"GF2M_NOT_SUPPORTED", ERR_LIB_EC, EC_R_GF2M_NOT_SUPPORTED},
+  #else
+    {"GF2M_NOT_SUPPORTED", 16, 147},
+  #endif
+  #ifdef EC_R_GROUP2PKPARAMETERS_FAILURE
+    {"GROUP2PKPARAMETERS_FAILURE", ERR_LIB_EC, EC_R_GROUP2PKPARAMETERS_FAILURE},
+  #else
+    {"GROUP2PKPARAMETERS_FAILURE", 16, 120},
+  #endif
+  #ifdef EC_R_I2D_ECPKPARAMETERS_FAILURE
+    {"I2D_ECPKPARAMETERS_FAILURE", ERR_LIB_EC, EC_R_I2D_ECPKPARAMETERS_FAILURE},
+  #else
+    {"I2D_ECPKPARAMETERS_FAILURE", 16, 121},
+  #endif
+  #ifdef EC_R_INCOMPATIBLE_OBJECTS
+    {"INCOMPATIBLE_OBJECTS", ERR_LIB_EC, EC_R_INCOMPATIBLE_OBJECTS},
+  #else
+    {"INCOMPATIBLE_OBJECTS", 16, 101},
+  #endif
+  #ifdef EC_R_INVALID_A
+    {"INVALID_A", ERR_LIB_EC, EC_R_INVALID_A},
+  #else
+    {"INVALID_A", 16, 168},
+  #endif
+  #ifdef EC_R_INVALID_ARGUMENT
+    {"INVALID_ARGUMENT", ERR_LIB_EC, EC_R_INVALID_ARGUMENT},
+  #else
+    {"INVALID_ARGUMENT", 16, 112},
+  #endif
+  #ifdef EC_R_INVALID_B
+    {"INVALID_B", ERR_LIB_EC, EC_R_INVALID_B},
+  #else
+    {"INVALID_B", 16, 169},
+  #endif
+  #ifdef EC_R_INVALID_COFACTOR
+    {"INVALID_COFACTOR", ERR_LIB_EC, EC_R_INVALID_COFACTOR},
+  #else
+    {"INVALID_COFACTOR", 16, 171},
+  #endif
+  #ifdef EC_R_INVALID_COMPRESSED_POINT
+    {"INVALID_COMPRESSED_POINT", ERR_LIB_EC, EC_R_INVALID_COMPRESSED_POINT},
+  #else
+    {"INVALID_COMPRESSED_POINT", 16, 110},
+  #endif
+  #ifdef EC_R_INVALID_COMPRESSION_BIT
+    {"INVALID_COMPRESSION_BIT", ERR_LIB_EC, EC_R_INVALID_COMPRESSION_BIT},
+  #else
+    {"INVALID_COMPRESSION_BIT", 16, 109},
+  #endif
+  #ifdef EC_R_INVALID_CURVE
+    {"INVALID_CURVE", ERR_LIB_EC, EC_R_INVALID_CURVE},
+  #else
+    {"INVALID_CURVE", 16, 141},
+  #endif
+  #ifdef EC_R_INVALID_DIGEST
+    {"INVALID_DIGEST", ERR_LIB_EC, EC_R_INVALID_DIGEST},
+  #else
+    {"INVALID_DIGEST", 16, 151},
+  #endif
+  #ifdef EC_R_INVALID_DIGEST_TYPE
+    {"INVALID_DIGEST_TYPE", ERR_LIB_EC, EC_R_INVALID_DIGEST_TYPE},
+  #else
+    {"INVALID_DIGEST_TYPE", 16, 138},
+  #endif
+  #ifdef EC_R_INVALID_ENCODING
+    {"INVALID_ENCODING", ERR_LIB_EC, EC_R_INVALID_ENCODING},
+  #else
+    {"INVALID_ENCODING", 16, 102},
+  #endif
+  #ifdef EC_R_INVALID_FIELD
+    {"INVALID_FIELD", ERR_LIB_EC, EC_R_INVALID_FIELD},
+  #else
+    {"INVALID_FIELD", 16, 103},
+  #endif
+  #ifdef EC_R_INVALID_FORM
+    {"INVALID_FORM", ERR_LIB_EC, EC_R_INVALID_FORM},
+  #else
+    {"INVALID_FORM", 16, 104},
+  #endif
+  #ifdef EC_R_INVALID_GENERATOR
+    {"INVALID_GENERATOR", ERR_LIB_EC, EC_R_INVALID_GENERATOR},
+  #else
+    {"INVALID_GENERATOR", 16, 173},
+  #endif
+  #ifdef EC_R_INVALID_GROUP_ORDER
+    {"INVALID_GROUP_ORDER", ERR_LIB_EC, EC_R_INVALID_GROUP_ORDER},
+  #else
+    {"INVALID_GROUP_ORDER", 16, 122},
+  #endif
+  #ifdef EC_R_INVALID_KEY
+    {"INVALID_KEY", ERR_LIB_EC, EC_R_INVALID_KEY},
+  #else
+    {"INVALID_KEY", 16, 116},
+  #endif
+  #ifdef EC_R_INVALID_LENGTH
+    {"INVALID_LENGTH", ERR_LIB_EC, EC_R_INVALID_LENGTH},
+  #else
+    {"INVALID_LENGTH", 16, 117},
+  #endif
+  #ifdef EC_R_INVALID_NAMED_GROUP_CONVERSION
+    {"INVALID_NAMED_GROUP_CONVERSION", ERR_LIB_EC, EC_R_INVALID_NAMED_GROUP_CONVERSION},
+  #else
+    {"INVALID_NAMED_GROUP_CONVERSION", 16, 174},
+  #endif
+  #ifdef EC_R_INVALID_OUTPUT_LENGTH
+    {"INVALID_OUTPUT_LENGTH", ERR_LIB_EC, EC_R_INVALID_OUTPUT_LENGTH},
+  #else
+    {"INVALID_OUTPUT_LENGTH", 16, 161},
+  #endif
+  #ifdef EC_R_INVALID_P
+    {"INVALID_P", ERR_LIB_EC, EC_R_INVALID_P},
+  #else
+    {"INVALID_P", 16, 172},
+  #endif
+  #ifdef EC_R_INVALID_PEER_KEY
+    {"INVALID_PEER_KEY", ERR_LIB_EC, EC_R_INVALID_PEER_KEY},
+  #else
+    {"INVALID_PEER_KEY", 16, 133},
+  #endif
+  #ifdef EC_R_INVALID_PENTANOMIAL_BASIS
+    {"INVALID_PENTANOMIAL_BASIS", ERR_LIB_EC, EC_R_INVALID_PENTANOMIAL_BASIS},
+  #else
+    {"INVALID_PENTANOMIAL_BASIS", 16, 132},
+  #endif
+  #ifdef EC_R_INVALID_PRIVATE_KEY
+    {"INVALID_PRIVATE_KEY", ERR_LIB_EC, EC_R_INVALID_PRIVATE_KEY},
+  #else
+    {"INVALID_PRIVATE_KEY", 16, 123},
+  #endif
+  #ifdef EC_R_INVALID_SEED
+    {"INVALID_SEED", ERR_LIB_EC, EC_R_INVALID_SEED},
+  #else
+    {"INVALID_SEED", 16, 175},
+  #endif
+  #ifdef EC_R_INVALID_TRINOMIAL_BASIS
+    {"INVALID_TRINOMIAL_BASIS", ERR_LIB_EC, EC_R_INVALID_TRINOMIAL_BASIS},
+  #else
+    {"INVALID_TRINOMIAL_BASIS", 16, 137},
+  #endif
+  #ifdef EC_R_KDF_PARAMETER_ERROR
+    {"KDF_PARAMETER_ERROR", ERR_LIB_EC, EC_R_KDF_PARAMETER_ERROR},
+  #else
+    {"KDF_PARAMETER_ERROR", 16, 148},
+  #endif
+  #ifdef EC_R_KEYS_NOT_SET
+    {"KEYS_NOT_SET", ERR_LIB_EC, EC_R_KEYS_NOT_SET},
+  #else
+    {"KEYS_NOT_SET", 16, 140},
+  #endif
+  #ifdef EC_R_LADDER_POST_FAILURE
+    {"LADDER_POST_FAILURE", ERR_LIB_EC, EC_R_LADDER_POST_FAILURE},
+  #else
+    {"LADDER_POST_FAILURE", 16, 136},
+  #endif
+  #ifdef EC_R_LADDER_PRE_FAILURE
+    {"LADDER_PRE_FAILURE", ERR_LIB_EC, EC_R_LADDER_PRE_FAILURE},
+  #else
+    {"LADDER_PRE_FAILURE", 16, 153},
+  #endif
+  #ifdef EC_R_LADDER_STEP_FAILURE
+    {"LADDER_STEP_FAILURE", ERR_LIB_EC, EC_R_LADDER_STEP_FAILURE},
+  #else
+    {"LADDER_STEP_FAILURE", 16, 162},
+  #endif
+  #ifdef EC_R_MISSING_OID
+    {"MISSING_OID", ERR_LIB_EC, EC_R_MISSING_OID},
+  #else
+    {"MISSING_OID", 16, 167},
+  #endif
+  #ifdef EC_R_MISSING_PARAMETERS
+    {"MISSING_PARAMETERS", ERR_LIB_EC, EC_R_MISSING_PARAMETERS},
+  #else
+    {"MISSING_PARAMETERS", 16, 124},
+  #endif
+  #ifdef EC_R_MISSING_PRIVATE_KEY
+    {"MISSING_PRIVATE_KEY", ERR_LIB_EC, EC_R_MISSING_PRIVATE_KEY},
+  #else
+    {"MISSING_PRIVATE_KEY", 16, 125},
+  #endif
+  #ifdef EC_R_NEED_NEW_SETUP_VALUES
+    {"NEED_NEW_SETUP_VALUES", ERR_LIB_EC, EC_R_NEED_NEW_SETUP_VALUES},
+  #else
+    {"NEED_NEW_SETUP_VALUES", 16, 157},
+  #endif
+  #ifdef EC_R_NOT_A_NIST_PRIME
+    {"NOT_A_NIST_PRIME", ERR_LIB_EC, EC_R_NOT_A_NIST_PRIME},
+  #else
+    {"NOT_A_NIST_PRIME", 16, 135},
+  #endif
+  #ifdef EC_R_NOT_IMPLEMENTED
+    {"NOT_IMPLEMENTED", ERR_LIB_EC, EC_R_NOT_IMPLEMENTED},
+  #else
+    {"NOT_IMPLEMENTED", 16, 126},
+  #endif
+  #ifdef EC_R_NOT_INITIALIZED
+    {"NOT_INITIALIZED", ERR_LIB_EC, EC_R_NOT_INITIALIZED},
+  #else
+    {"NOT_INITIALIZED", 16, 111},
+  #endif
+  #ifdef EC_R_NO_PARAMETERS_SET
+    {"NO_PARAMETERS_SET", ERR_LIB_EC, EC_R_NO_PARAMETERS_SET},
+  #else
+    {"NO_PARAMETERS_SET", 16, 139},
+  #endif
+  #ifdef EC_R_NO_PRIVATE_VALUE
+    {"NO_PRIVATE_VALUE", ERR_LIB_EC, EC_R_NO_PRIVATE_VALUE},
+  #else
+    {"NO_PRIVATE_VALUE", 16, 154},
+  #endif
+  #ifdef EC_R_OPERATION_NOT_SUPPORTED
+    {"OPERATION_NOT_SUPPORTED", ERR_LIB_EC, EC_R_OPERATION_NOT_SUPPORTED},
+  #else
+    {"OPERATION_NOT_SUPPORTED", 16, 152},
+  #endif
+  #ifdef EC_R_PASSED_NULL_PARAMETER
+    {"PASSED_NULL_PARAMETER", ERR_LIB_EC, EC_R_PASSED_NULL_PARAMETER},
+  #else
+    {"PASSED_NULL_PARAMETER", 16, 134},
+  #endif
+  #ifdef EC_R_PEER_KEY_ERROR
+    {"PEER_KEY_ERROR", ERR_LIB_EC, EC_R_PEER_KEY_ERROR},
+  #else
+    {"PEER_KEY_ERROR", 16, 149},
+  #endif
+  #ifdef EC_R_POINT_ARITHMETIC_FAILURE
+    {"POINT_ARITHMETIC_FAILURE", ERR_LIB_EC, EC_R_POINT_ARITHMETIC_FAILURE},
+  #else
+    {"POINT_ARITHMETIC_FAILURE", 16, 155},
+  #endif
+  #ifdef EC_R_POINT_AT_INFINITY
+    {"POINT_AT_INFINITY", ERR_LIB_EC, EC_R_POINT_AT_INFINITY},
+  #else
+    {"POINT_AT_INFINITY", 16, 106},
+  #endif
+  #ifdef EC_R_POINT_COORDINATES_BLIND_FAILURE
+    {"POINT_COORDINATES_BLIND_FAILURE", ERR_LIB_EC, EC_R_POINT_COORDINATES_BLIND_FAILURE},
+  #else
+    {"POINT_COORDINATES_BLIND_FAILURE", 16, 163},
+  #endif
+  #ifdef EC_R_POINT_IS_NOT_ON_CURVE
+    {"POINT_IS_NOT_ON_CURVE", ERR_LIB_EC, EC_R_POINT_IS_NOT_ON_CURVE},
+  #else
+    {"POINT_IS_NOT_ON_CURVE", 16, 107},
+  #endif
+  #ifdef EC_R_RANDOM_NUMBER_GENERATION_FAILED
+    {"RANDOM_NUMBER_GENERATION_FAILED", ERR_LIB_EC, EC_R_RANDOM_NUMBER_GENERATION_FAILED},
+  #else
+    {"RANDOM_NUMBER_GENERATION_FAILED", 16, 158},
+  #endif
+  #ifdef EC_R_SHARED_INFO_ERROR
+    {"SHARED_INFO_ERROR", ERR_LIB_EC, EC_R_SHARED_INFO_ERROR},
+  #else
+    {"SHARED_INFO_ERROR", 16, 150},
+  #endif
+  #ifdef EC_R_SLOT_FULL
+    {"SLOT_FULL", ERR_LIB_EC, EC_R_SLOT_FULL},
+  #else
+    {"SLOT_FULL", 16, 108},
+  #endif
+  #ifdef EC_R_TOO_MANY_RETRIES
+    {"TOO_MANY_RETRIES", ERR_LIB_EC, EC_R_TOO_MANY_RETRIES},
+  #else
+    {"TOO_MANY_RETRIES", 16, 176},
+  #endif
+  #ifdef EC_R_UNDEFINED_GENERATOR
+    {"UNDEFINED_GENERATOR", ERR_LIB_EC, EC_R_UNDEFINED_GENERATOR},
+  #else
+    {"UNDEFINED_GENERATOR", 16, 113},
+  #endif
+  #ifdef EC_R_UNDEFINED_ORDER
+    {"UNDEFINED_ORDER", ERR_LIB_EC, EC_R_UNDEFINED_ORDER},
+  #else
+    {"UNDEFINED_ORDER", 16, 128},
+  #endif
+  #ifdef EC_R_UNKNOWN_COFACTOR
+    {"UNKNOWN_COFACTOR", ERR_LIB_EC, EC_R_UNKNOWN_COFACTOR},
+  #else
+    {"UNKNOWN_COFACTOR", 16, 164},
+  #endif
+  #ifdef EC_R_UNKNOWN_GROUP
+    {"UNKNOWN_GROUP", ERR_LIB_EC, EC_R_UNKNOWN_GROUP},
+  #else
+    {"UNKNOWN_GROUP", 16, 129},
+  #endif
+  #ifdef EC_R_UNKNOWN_ORDER
+    {"UNKNOWN_ORDER", ERR_LIB_EC, EC_R_UNKNOWN_ORDER},
+  #else
+    {"UNKNOWN_ORDER", 16, 114},
+  #endif
+  #ifdef EC_R_UNSUPPORTED_FIELD
+    {"UNSUPPORTED_FIELD", ERR_LIB_EC, EC_R_UNSUPPORTED_FIELD},
+  #else
+    {"UNSUPPORTED_FIELD", 16, 131},
+  #endif
+  #ifdef EC_R_WRONG_CURVE_PARAMETERS
+    {"WRONG_CURVE_PARAMETERS", ERR_LIB_EC, EC_R_WRONG_CURVE_PARAMETERS},
+  #else
+    {"WRONG_CURVE_PARAMETERS", 16, 145},
+  #endif
+  #ifdef EC_R_WRONG_ORDER
+    {"WRONG_ORDER", ERR_LIB_EC, EC_R_WRONG_ORDER},
+  #else
+    {"WRONG_ORDER", 16, 130},
+  #endif
+  #ifdef ENGINE_R_ALREADY_LOADED
+    {"ALREADY_LOADED", ERR_LIB_ENGINE, ENGINE_R_ALREADY_LOADED},
+  #else
+    {"ALREADY_LOADED", 38, 100},
+  #endif
+  #ifdef ENGINE_R_ARGUMENT_IS_NOT_A_NUMBER
+    {"ARGUMENT_IS_NOT_A_NUMBER", ERR_LIB_ENGINE, ENGINE_R_ARGUMENT_IS_NOT_A_NUMBER},
+  #else
+    {"ARGUMENT_IS_NOT_A_NUMBER", 38, 133},
+  #endif
+  #ifdef ENGINE_R_CMD_NOT_EXECUTABLE
+    {"CMD_NOT_EXECUTABLE", ERR_LIB_ENGINE, ENGINE_R_CMD_NOT_EXECUTABLE},
+  #else
+    {"CMD_NOT_EXECUTABLE", 38, 134},
+  #endif
+  #ifdef ENGINE_R_COMMAND_TAKES_INPUT
+    {"COMMAND_TAKES_INPUT", ERR_LIB_ENGINE, ENGINE_R_COMMAND_TAKES_INPUT},
+  #else
+    {"COMMAND_TAKES_INPUT", 38, 135},
+  #endif
+  #ifdef ENGINE_R_COMMAND_TAKES_NO_INPUT
+    {"COMMAND_TAKES_NO_INPUT", ERR_LIB_ENGINE, ENGINE_R_COMMAND_TAKES_NO_INPUT},
+  #else
+    {"COMMAND_TAKES_NO_INPUT", 38, 136},
+  #endif
+  #ifdef ENGINE_R_CONFLICTING_ENGINE_ID
+    {"CONFLICTING_ENGINE_ID", ERR_LIB_ENGINE, ENGINE_R_CONFLICTING_ENGINE_ID},
+  #else
+    {"CONFLICTING_ENGINE_ID", 38, 103},
+  #endif
+  #ifdef ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED
+    {"CTRL_COMMAND_NOT_IMPLEMENTED", ERR_LIB_ENGINE, ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED},
+  #else
+    {"CTRL_COMMAND_NOT_IMPLEMENTED", 38, 119},
+  #endif
+  #ifdef ENGINE_R_DSO_FAILURE
+    {"DSO_FAILURE", ERR_LIB_ENGINE, ENGINE_R_DSO_FAILURE},
+  #else
+    {"DSO_FAILURE", 38, 104},
+  #endif
+  #ifdef ENGINE_R_DSO_NOT_FOUND
+    {"DSO_NOT_FOUND", ERR_LIB_ENGINE, ENGINE_R_DSO_NOT_FOUND},
+  #else
+    {"DSO_NOT_FOUND", 38, 132},
+  #endif
+  #ifdef ENGINE_R_ENGINES_SECTION_ERROR
+    {"ENGINES_SECTION_ERROR", ERR_LIB_ENGINE, ENGINE_R_ENGINES_SECTION_ERROR},
+  #else
+    {"ENGINES_SECTION_ERROR", 38, 148},
+  #endif
+  #ifdef ENGINE_R_ENGINE_CONFIGURATION_ERROR
+    {"ENGINE_CONFIGURATION_ERROR", ERR_LIB_ENGINE, ENGINE_R_ENGINE_CONFIGURATION_ERROR},
+  #else
+    {"ENGINE_CONFIGURATION_ERROR", 38, 102},
+  #endif
+  #ifdef ENGINE_R_ENGINE_IS_NOT_IN_LIST
+    {"ENGINE_IS_NOT_IN_LIST", ERR_LIB_ENGINE, ENGINE_R_ENGINE_IS_NOT_IN_LIST},
+  #else
+    {"ENGINE_IS_NOT_IN_LIST", 38, 105},
+  #endif
+  #ifdef ENGINE_R_ENGINE_SECTION_ERROR
+    {"ENGINE_SECTION_ERROR", ERR_LIB_ENGINE, ENGINE_R_ENGINE_SECTION_ERROR},
+  #else
+    {"ENGINE_SECTION_ERROR", 38, 149},
+  #endif
+  #ifdef ENGINE_R_FAILED_LOADING_PRIVATE_KEY
+    {"FAILED_LOADING_PRIVATE_KEY", ERR_LIB_ENGINE, ENGINE_R_FAILED_LOADING_PRIVATE_KEY},
+  #else
+    {"FAILED_LOADING_PRIVATE_KEY", 38, 128},
+  #endif
+  #ifdef ENGINE_R_FAILED_LOADING_PUBLIC_KEY
+    {"FAILED_LOADING_PUBLIC_KEY", ERR_LIB_ENGINE, ENGINE_R_FAILED_LOADING_PUBLIC_KEY},
+  #else
+    {"FAILED_LOADING_PUBLIC_KEY", 38, 129},
+  #endif
+  #ifdef ENGINE_R_FINISH_FAILED
+    {"FINISH_FAILED", ERR_LIB_ENGINE, ENGINE_R_FINISH_FAILED},
+  #else
+    {"FINISH_FAILED", 38, 106},
+  #endif
+  #ifdef ENGINE_R_ID_OR_NAME_MISSING
+    {"ID_OR_NAME_MISSING", ERR_LIB_ENGINE, ENGINE_R_ID_OR_NAME_MISSING},
+  #else
+    {"ID_OR_NAME_MISSING", 38, 108},
+  #endif
+  #ifdef ENGINE_R_INIT_FAILED
+    {"INIT_FAILED", ERR_LIB_ENGINE, ENGINE_R_INIT_FAILED},
+  #else
+    {"INIT_FAILED", 38, 109},
+  #endif
+  #ifdef ENGINE_R_INTERNAL_LIST_ERROR
+    {"INTERNAL_LIST_ERROR", ERR_LIB_ENGINE, ENGINE_R_INTERNAL_LIST_ERROR},
+  #else
+    {"INTERNAL_LIST_ERROR", 38, 110},
+  #endif
+  #ifdef ENGINE_R_INVALID_ARGUMENT
+    {"INVALID_ARGUMENT", ERR_LIB_ENGINE, ENGINE_R_INVALID_ARGUMENT},
+  #else
+    {"INVALID_ARGUMENT", 38, 143},
+  #endif
+  #ifdef ENGINE_R_INVALID_CMD_NAME
+    {"INVALID_CMD_NAME", ERR_LIB_ENGINE, ENGINE_R_INVALID_CMD_NAME},
+  #else
+    {"INVALID_CMD_NAME", 38, 137},
+  #endif
+  #ifdef ENGINE_R_INVALID_CMD_NUMBER
+    {"INVALID_CMD_NUMBER", ERR_LIB_ENGINE, ENGINE_R_INVALID_CMD_NUMBER},
+  #else
+    {"INVALID_CMD_NUMBER", 38, 138},
+  #endif
+  #ifdef ENGINE_R_INVALID_INIT_VALUE
+    {"INVALID_INIT_VALUE", ERR_LIB_ENGINE, ENGINE_R_INVALID_INIT_VALUE},
+  #else
+    {"INVALID_INIT_VALUE", 38, 151},
+  #endif
+  #ifdef ENGINE_R_INVALID_STRING
+    {"INVALID_STRING", ERR_LIB_ENGINE, ENGINE_R_INVALID_STRING},
+  #else
+    {"INVALID_STRING", 38, 150},
+  #endif
+  #ifdef ENGINE_R_NOT_INITIALISED
+    {"NOT_INITIALISED", ERR_LIB_ENGINE, ENGINE_R_NOT_INITIALISED},
+  #else
+    {"NOT_INITIALISED", 38, 117},
+  #endif
+  #ifdef ENGINE_R_NOT_LOADED
+    {"NOT_LOADED", ERR_LIB_ENGINE, ENGINE_R_NOT_LOADED},
+  #else
+    {"NOT_LOADED", 38, 112},
+  #endif
+  #ifdef ENGINE_R_NO_CONTROL_FUNCTION
+    {"NO_CONTROL_FUNCTION", ERR_LIB_ENGINE, ENGINE_R_NO_CONTROL_FUNCTION},
+  #else
+    {"NO_CONTROL_FUNCTION", 38, 120},
+  #endif
+  #ifdef ENGINE_R_NO_INDEX
+    {"NO_INDEX", ERR_LIB_ENGINE, ENGINE_R_NO_INDEX},
+  #else
+    {"NO_INDEX", 38, 144},
+  #endif
+  #ifdef ENGINE_R_NO_LOAD_FUNCTION
+    {"NO_LOAD_FUNCTION", ERR_LIB_ENGINE, ENGINE_R_NO_LOAD_FUNCTION},
+  #else
+    {"NO_LOAD_FUNCTION", 38, 125},
+  #endif
+  #ifdef ENGINE_R_NO_REFERENCE
+    {"NO_REFERENCE", ERR_LIB_ENGINE, ENGINE_R_NO_REFERENCE},
+  #else
+    {"NO_REFERENCE", 38, 130},
+  #endif
+  #ifdef ENGINE_R_NO_SUCH_ENGINE
+    {"NO_SUCH_ENGINE", ERR_LIB_ENGINE, ENGINE_R_NO_SUCH_ENGINE},
+  #else
+    {"NO_SUCH_ENGINE", 38, 116},
+  #endif
+  #ifdef ENGINE_R_UNIMPLEMENTED_CIPHER
+    {"UNIMPLEMENTED_CIPHER", ERR_LIB_ENGINE, ENGINE_R_UNIMPLEMENTED_CIPHER},
+  #else
+    {"UNIMPLEMENTED_CIPHER", 38, 146},
+  #endif
+  #ifdef ENGINE_R_UNIMPLEMENTED_DIGEST
+    {"UNIMPLEMENTED_DIGEST", ERR_LIB_ENGINE, ENGINE_R_UNIMPLEMENTED_DIGEST},
+  #else
+    {"UNIMPLEMENTED_DIGEST", 38, 147},
+  #endif
+  #ifdef ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD
+    {"UNIMPLEMENTED_PUBLIC_KEY_METHOD", ERR_LIB_ENGINE, ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD},
+  #else
+    {"UNIMPLEMENTED_PUBLIC_KEY_METHOD", 38, 101},
+  #endif
+  #ifdef ENGINE_R_VERSION_INCOMPATIBILITY
+    {"VERSION_INCOMPATIBILITY", ERR_LIB_ENGINE, ENGINE_R_VERSION_INCOMPATIBILITY},
+  #else
+    {"VERSION_INCOMPATIBILITY", 38, 145},
+  #endif
+  #ifdef ESS_R_EMPTY_ESS_CERT_ID_LIST
+    {"EMPTY_ESS_CERT_ID_LIST", ERR_LIB_ESS, ESS_R_EMPTY_ESS_CERT_ID_LIST},
+  #else
+    {"EMPTY_ESS_CERT_ID_LIST", 54, 107},
+  #endif
+  #ifdef ESS_R_ESS_CERT_DIGEST_ERROR
+    {"ESS_CERT_DIGEST_ERROR", ERR_LIB_ESS, ESS_R_ESS_CERT_DIGEST_ERROR},
+  #else
+    {"ESS_CERT_DIGEST_ERROR", 54, 103},
+  #endif
+  #ifdef ESS_R_ESS_CERT_ID_NOT_FOUND
+    {"ESS_CERT_ID_NOT_FOUND", ERR_LIB_ESS, ESS_R_ESS_CERT_ID_NOT_FOUND},
+  #else
+    {"ESS_CERT_ID_NOT_FOUND", 54, 104},
+  #endif
+  #ifdef ESS_R_ESS_CERT_ID_WRONG_ORDER
+    {"ESS_CERT_ID_WRONG_ORDER", ERR_LIB_ESS, ESS_R_ESS_CERT_ID_WRONG_ORDER},
+  #else
+    {"ESS_CERT_ID_WRONG_ORDER", 54, 105},
+  #endif
+  #ifdef ESS_R_ESS_DIGEST_ALG_UNKNOWN
+    {"ESS_DIGEST_ALG_UNKNOWN", ERR_LIB_ESS, ESS_R_ESS_DIGEST_ALG_UNKNOWN},
+  #else
+    {"ESS_DIGEST_ALG_UNKNOWN", 54, 106},
+  #endif
+  #ifdef ESS_R_ESS_SIGNING_CERTIFICATE_ERROR
+    {"ESS_SIGNING_CERTIFICATE_ERROR", ERR_LIB_ESS, ESS_R_ESS_SIGNING_CERTIFICATE_ERROR},
+  #else
+    {"ESS_SIGNING_CERTIFICATE_ERROR", 54, 102},
+  #endif
+  #ifdef ESS_R_ESS_SIGNING_CERT_ADD_ERROR
+    {"ESS_SIGNING_CERT_ADD_ERROR", ERR_LIB_ESS, ESS_R_ESS_SIGNING_CERT_ADD_ERROR},
+  #else
+    {"ESS_SIGNING_CERT_ADD_ERROR", 54, 100},
+  #endif
+  #ifdef ESS_R_ESS_SIGNING_CERT_V2_ADD_ERROR
+    {"ESS_SIGNING_CERT_V2_ADD_ERROR", ERR_LIB_ESS, ESS_R_ESS_SIGNING_CERT_V2_ADD_ERROR},
+  #else
+    {"ESS_SIGNING_CERT_V2_ADD_ERROR", 54, 101},
+  #endif
+  #ifdef ESS_R_MISSING_SIGNING_CERTIFICATE_ATTRIBUTE
+    {"MISSING_SIGNING_CERTIFICATE_ATTRIBUTE", ERR_LIB_ESS, ESS_R_MISSING_SIGNING_CERTIFICATE_ATTRIBUTE},
+  #else
+    {"MISSING_SIGNING_CERTIFICATE_ATTRIBUTE", 54, 108},
+  #endif
+  #ifdef EVP_R_AES_KEY_SETUP_FAILED
+    {"AES_KEY_SETUP_FAILED", ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED},
+  #else
+    {"AES_KEY_SETUP_FAILED", 6, 143},
+  #endif
+  #ifdef EVP_R_ARIA_KEY_SETUP_FAILED
+    {"ARIA_KEY_SETUP_FAILED", ERR_LIB_EVP, EVP_R_ARIA_KEY_SETUP_FAILED},
+  #else
+    {"ARIA_KEY_SETUP_FAILED", 6, 176},
+  #endif
+  #ifdef EVP_R_BAD_ALGORITHM_NAME
+    {"BAD_ALGORITHM_NAME", ERR_LIB_EVP, EVP_R_BAD_ALGORITHM_NAME},
+  #else
+    {"BAD_ALGORITHM_NAME", 6, 200},
+  #endif
+  #ifdef EVP_R_BAD_DECRYPT
+    {"BAD_DECRYPT", ERR_LIB_EVP, EVP_R_BAD_DECRYPT},
+  #else
+    {"BAD_DECRYPT", 6, 100},
+  #endif
+  #ifdef EVP_R_BAD_KEY_LENGTH
+    {"BAD_KEY_LENGTH", ERR_LIB_EVP, EVP_R_BAD_KEY_LENGTH},
+  #else
+    {"BAD_KEY_LENGTH", 6, 195},
+  #endif
+  #ifdef EVP_R_BUFFER_TOO_SMALL
+    {"BUFFER_TOO_SMALL", ERR_LIB_EVP, EVP_R_BUFFER_TOO_SMALL},
+  #else
+    {"BUFFER_TOO_SMALL", 6, 155},
+  #endif
+  #ifdef EVP_R_CACHE_CONSTANTS_FAILED
+    {"CACHE_CONSTANTS_FAILED", ERR_LIB_EVP, EVP_R_CACHE_CONSTANTS_FAILED},
+  #else
+    {"CACHE_CONSTANTS_FAILED", 6, 225},
+  #endif
+  #ifdef EVP_R_CAMELLIA_KEY_SETUP_FAILED
+    {"CAMELLIA_KEY_SETUP_FAILED", ERR_LIB_EVP, EVP_R_CAMELLIA_KEY_SETUP_FAILED},
+  #else
+    {"CAMELLIA_KEY_SETUP_FAILED", 6, 157},
+  #endif
+  #ifdef EVP_R_CANNOT_GET_PARAMETERS
+    {"CANNOT_GET_PARAMETERS", ERR_LIB_EVP, EVP_R_CANNOT_GET_PARAMETERS},
+  #else
+    {"CANNOT_GET_PARAMETERS", 6, 197},
+  #endif
+  #ifdef EVP_R_CANNOT_SET_PARAMETERS
+    {"CANNOT_SET_PARAMETERS", ERR_LIB_EVP, EVP_R_CANNOT_SET_PARAMETERS},
+  #else
+    {"CANNOT_SET_PARAMETERS", 6, 198},
+  #endif
+  #ifdef EVP_R_CIPHER_NOT_GCM_MODE
+    {"CIPHER_NOT_GCM_MODE", ERR_LIB_EVP, EVP_R_CIPHER_NOT_GCM_MODE},
+  #else
+    {"CIPHER_NOT_GCM_MODE", 6, 184},
+  #endif
+  #ifdef EVP_R_CIPHER_PARAMETER_ERROR
+    {"CIPHER_PARAMETER_ERROR", ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR},
+  #else
+    {"CIPHER_PARAMETER_ERROR", 6, 122},
+  #endif
+  #ifdef EVP_R_COMMAND_NOT_SUPPORTED
+    {"COMMAND_NOT_SUPPORTED", ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED},
+  #else
+    {"COMMAND_NOT_SUPPORTED", 6, 147},
+  #endif
+  #ifdef EVP_R_CONFLICTING_ALGORITHM_NAME
+    {"CONFLICTING_ALGORITHM_NAME", ERR_LIB_EVP, EVP_R_CONFLICTING_ALGORITHM_NAME},
+  #else
+    {"CONFLICTING_ALGORITHM_NAME", 6, 201},
+  #endif
+  #ifdef EVP_R_COPY_ERROR
+    {"COPY_ERROR", ERR_LIB_EVP, EVP_R_COPY_ERROR},
+  #else
+    {"COPY_ERROR", 6, 173},
+  #endif
+  #ifdef EVP_R_CTRL_NOT_IMPLEMENTED
+    {"CTRL_NOT_IMPLEMENTED", ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED},
+  #else
+    {"CTRL_NOT_IMPLEMENTED", 6, 132},
+  #endif
+  #ifdef EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED
+    {"CTRL_OPERATION_NOT_IMPLEMENTED", ERR_LIB_EVP, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED},
+  #else
+    {"CTRL_OPERATION_NOT_IMPLEMENTED", 6, 133},
+  #endif
+  #ifdef EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH
+    {"DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH", ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH},
+  #else
+    {"DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH", 6, 138},
+  #endif
+  #ifdef EVP_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_EVP, EVP_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 6, 114},
+  #endif
+  #ifdef EVP_R_DEFAULT_QUERY_PARSE_ERROR
+    {"DEFAULT_QUERY_PARSE_ERROR", ERR_LIB_EVP, EVP_R_DEFAULT_QUERY_PARSE_ERROR},
+  #else
+    {"DEFAULT_QUERY_PARSE_ERROR", 6, 210},
+  #endif
+  #ifdef EVP_R_DIFFERENT_KEY_TYPES
+    {"DIFFERENT_KEY_TYPES", ERR_LIB_EVP, EVP_R_DIFFERENT_KEY_TYPES},
+  #else
+    {"DIFFERENT_KEY_TYPES", 6, 101},
+  #endif
+  #ifdef EVP_R_DIFFERENT_PARAMETERS
+    {"DIFFERENT_PARAMETERS", ERR_LIB_EVP, EVP_R_DIFFERENT_PARAMETERS},
+  #else
+    {"DIFFERENT_PARAMETERS", 6, 153},
+  #endif
+  #ifdef EVP_R_ERROR_LOADING_SECTION
+    {"ERROR_LOADING_SECTION", ERR_LIB_EVP, EVP_R_ERROR_LOADING_SECTION},
+  #else
+    {"ERROR_LOADING_SECTION", 6, 165},
+  #endif
+  #ifdef EVP_R_EXPECTING_AN_HMAC_KEY
+    {"EXPECTING_AN_HMAC_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_AN_HMAC_KEY},
+  #else
+    {"EXPECTING_AN_HMAC_KEY", 6, 174},
+  #endif
+  #ifdef EVP_R_EXPECTING_AN_RSA_KEY
+    {"EXPECTING_AN_RSA_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_AN_RSA_KEY},
+  #else
+    {"EXPECTING_AN_RSA_KEY", 6, 127},
+  #endif
+  #ifdef EVP_R_EXPECTING_A_DH_KEY
+    {"EXPECTING_A_DH_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_A_DH_KEY},
+  #else
+    {"EXPECTING_A_DH_KEY", 6, 128},
+  #endif
+  #ifdef EVP_R_EXPECTING_A_DSA_KEY
+    {"EXPECTING_A_DSA_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_A_DSA_KEY},
+  #else
+    {"EXPECTING_A_DSA_KEY", 6, 129},
+  #endif
+  #ifdef EVP_R_EXPECTING_A_ECX_KEY
+    {"EXPECTING_A_ECX_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_A_ECX_KEY},
+  #else
+    {"EXPECTING_A_ECX_KEY", 6, 219},
+  #endif
+  #ifdef EVP_R_EXPECTING_A_EC_KEY
+    {"EXPECTING_A_EC_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_A_EC_KEY},
+  #else
+    {"EXPECTING_A_EC_KEY", 6, 142},
+  #endif
+  #ifdef EVP_R_EXPECTING_A_POLY1305_KEY
+    {"EXPECTING_A_POLY1305_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_A_POLY1305_KEY},
+  #else
+    {"EXPECTING_A_POLY1305_KEY", 6, 164},
+  #endif
+  #ifdef EVP_R_EXPECTING_A_SIPHASH_KEY
+    {"EXPECTING_A_SIPHASH_KEY", ERR_LIB_EVP, EVP_R_EXPECTING_A_SIPHASH_KEY},
+  #else
+    {"EXPECTING_A_SIPHASH_KEY", 6, 175},
+  #endif
+  #ifdef EVP_R_FINAL_ERROR
+    {"FINAL_ERROR", ERR_LIB_EVP, EVP_R_FINAL_ERROR},
+  #else
+    {"FINAL_ERROR", 6, 188},
+  #endif
+  #ifdef EVP_R_GENERATE_ERROR
+    {"GENERATE_ERROR", ERR_LIB_EVP, EVP_R_GENERATE_ERROR},
+  #else
+    {"GENERATE_ERROR", 6, 214},
+  #endif
+  #ifdef EVP_R_GET_RAW_KEY_FAILED
+    {"GET_RAW_KEY_FAILED", ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED},
+  #else
+    {"GET_RAW_KEY_FAILED", 6, 182},
+  #endif
+  #ifdef EVP_R_ILLEGAL_SCRYPT_PARAMETERS
+    {"ILLEGAL_SCRYPT_PARAMETERS", ERR_LIB_EVP, EVP_R_ILLEGAL_SCRYPT_PARAMETERS},
+  #else
+    {"ILLEGAL_SCRYPT_PARAMETERS", 6, 171},
+  #endif
+  #ifdef EVP_R_INACCESSIBLE_DOMAIN_PARAMETERS
+    {"INACCESSIBLE_DOMAIN_PARAMETERS", ERR_LIB_EVP, EVP_R_INACCESSIBLE_DOMAIN_PARAMETERS},
+  #else
+    {"INACCESSIBLE_DOMAIN_PARAMETERS", 6, 204},
+  #endif
+  #ifdef EVP_R_INACCESSIBLE_KEY
+    {"INACCESSIBLE_KEY", ERR_LIB_EVP, EVP_R_INACCESSIBLE_KEY},
+  #else
+    {"INACCESSIBLE_KEY", 6, 203},
+  #endif
+  #ifdef EVP_R_INITIALIZATION_ERROR
+    {"INITIALIZATION_ERROR", ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR},
+  #else
+    {"INITIALIZATION_ERROR", 6, 134},
+  #endif
+  #ifdef EVP_R_INPUT_NOT_INITIALIZED
+    {"INPUT_NOT_INITIALIZED", ERR_LIB_EVP, EVP_R_INPUT_NOT_INITIALIZED},
+  #else
+    {"INPUT_NOT_INITIALIZED", 6, 111},
+  #endif
+  #ifdef EVP_R_INVALID_CUSTOM_LENGTH
+    {"INVALID_CUSTOM_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_CUSTOM_LENGTH},
+  #else
+    {"INVALID_CUSTOM_LENGTH", 6, 185},
+  #endif
+  #ifdef EVP_R_INVALID_DIGEST
+    {"INVALID_DIGEST", ERR_LIB_EVP, EVP_R_INVALID_DIGEST},
+  #else
+    {"INVALID_DIGEST", 6, 152},
+  #endif
+  #ifdef EVP_R_INVALID_IV_LENGTH
+    {"INVALID_IV_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH},
+  #else
+    {"INVALID_IV_LENGTH", 6, 194},
+  #endif
+  #ifdef EVP_R_INVALID_KEY
+    {"INVALID_KEY", ERR_LIB_EVP, EVP_R_INVALID_KEY},
+  #else
+    {"INVALID_KEY", 6, 163},
+  #endif
+  #ifdef EVP_R_INVALID_KEY_LENGTH
+    {"INVALID_KEY_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH},
+  #else
+    {"INVALID_KEY_LENGTH", 6, 130},
+  #endif
+  #ifdef EVP_R_INVALID_LENGTH
+    {"INVALID_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_LENGTH},
+  #else
+    {"INVALID_LENGTH", 6, 221},
+  #endif
+  #ifdef EVP_R_INVALID_NULL_ALGORITHM
+    {"INVALID_NULL_ALGORITHM", ERR_LIB_EVP, EVP_R_INVALID_NULL_ALGORITHM},
+  #else
+    {"INVALID_NULL_ALGORITHM", 6, 218},
+  #endif
+  #ifdef EVP_R_INVALID_OPERATION
+    {"INVALID_OPERATION", ERR_LIB_EVP, EVP_R_INVALID_OPERATION},
+  #else
+    {"INVALID_OPERATION", 6, 148},
+  #endif
+  #ifdef EVP_R_INVALID_PROVIDER_FUNCTIONS
+    {"INVALID_PROVIDER_FUNCTIONS", ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS},
+  #else
+    {"INVALID_PROVIDER_FUNCTIONS", 6, 193},
+  #endif
+  #ifdef EVP_R_INVALID_SALT_LENGTH
+    {"INVALID_SALT_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_SALT_LENGTH},
+  #else
+    {"INVALID_SALT_LENGTH", 6, 186},
+  #endif
+  #ifdef EVP_R_INVALID_SECRET_LENGTH
+    {"INVALID_SECRET_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_SECRET_LENGTH},
+  #else
+    {"INVALID_SECRET_LENGTH", 6, 223},
+  #endif
+  #ifdef EVP_R_INVALID_SEED_LENGTH
+    {"INVALID_SEED_LENGTH", ERR_LIB_EVP, EVP_R_INVALID_SEED_LENGTH},
+  #else
+    {"INVALID_SEED_LENGTH", 6, 220},
+  #endif
+  #ifdef EVP_R_INVALID_VALUE
+    {"INVALID_VALUE", ERR_LIB_EVP, EVP_R_INVALID_VALUE},
+  #else
+    {"INVALID_VALUE", 6, 222},
+  #endif
+  #ifdef EVP_R_KEYMGMT_EXPORT_FAILURE
+    {"KEYMGMT_EXPORT_FAILURE", ERR_LIB_EVP, EVP_R_KEYMGMT_EXPORT_FAILURE},
+  #else
+    {"KEYMGMT_EXPORT_FAILURE", 6, 205},
+  #endif
+  #ifdef EVP_R_KEY_SETUP_FAILED
+    {"KEY_SETUP_FAILED", ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED},
+  #else
+    {"KEY_SETUP_FAILED", 6, 180},
+  #endif
+  #ifdef EVP_R_LOCKING_NOT_SUPPORTED
+    {"LOCKING_NOT_SUPPORTED", ERR_LIB_EVP, EVP_R_LOCKING_NOT_SUPPORTED},
+  #else
+    {"LOCKING_NOT_SUPPORTED", 6, 213},
+  #endif
+  #ifdef EVP_R_MEMORY_LIMIT_EXCEEDED
+    {"MEMORY_LIMIT_EXCEEDED", ERR_LIB_EVP, EVP_R_MEMORY_LIMIT_EXCEEDED},
+  #else
+    {"MEMORY_LIMIT_EXCEEDED", 6, 172},
+  #endif
+  #ifdef EVP_R_MESSAGE_DIGEST_IS_NULL
+    {"MESSAGE_DIGEST_IS_NULL", ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL},
+  #else
+    {"MESSAGE_DIGEST_IS_NULL", 6, 159},
+  #endif
+  #ifdef EVP_R_METHOD_NOT_SUPPORTED
+    {"METHOD_NOT_SUPPORTED", ERR_LIB_EVP, EVP_R_METHOD_NOT_SUPPORTED},
+  #else
+    {"METHOD_NOT_SUPPORTED", 6, 144},
+  #endif
+  #ifdef EVP_R_MISSING_PARAMETERS
+    {"MISSING_PARAMETERS", ERR_LIB_EVP, EVP_R_MISSING_PARAMETERS},
+  #else
+    {"MISSING_PARAMETERS", 6, 103},
+  #endif
+  #ifdef EVP_R_NOT_ABLE_TO_COPY_CTX
+    {"NOT_ABLE_TO_COPY_CTX", ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX},
+  #else
+    {"NOT_ABLE_TO_COPY_CTX", 6, 190},
+  #endif
+  #ifdef EVP_R_NOT_XOF_OR_INVALID_LENGTH
+    {"NOT_XOF_OR_INVALID_LENGTH", ERR_LIB_EVP, EVP_R_NOT_XOF_OR_INVALID_LENGTH},
+  #else
+    {"NOT_XOF_OR_INVALID_LENGTH", 6, 178},
+  #endif
+  #ifdef EVP_R_NO_CIPHER_SET
+    {"NO_CIPHER_SET", ERR_LIB_EVP, EVP_R_NO_CIPHER_SET},
+  #else
+    {"NO_CIPHER_SET", 6, 131},
+  #endif
+  #ifdef EVP_R_NO_DEFAULT_DIGEST
+    {"NO_DEFAULT_DIGEST", ERR_LIB_EVP, EVP_R_NO_DEFAULT_DIGEST},
+  #else
+    {"NO_DEFAULT_DIGEST", 6, 158},
+  #endif
+  #ifdef EVP_R_NO_DIGEST_SET
+    {"NO_DIGEST_SET", ERR_LIB_EVP, EVP_R_NO_DIGEST_SET},
+  #else
+    {"NO_DIGEST_SET", 6, 139},
+  #endif
+  #ifdef EVP_R_NO_IMPORT_FUNCTION
+    {"NO_IMPORT_FUNCTION", ERR_LIB_EVP, EVP_R_NO_IMPORT_FUNCTION},
+  #else
+    {"NO_IMPORT_FUNCTION", 6, 206},
+  #endif
+  #ifdef EVP_R_NO_KEYMGMT_AVAILABLE
+    {"NO_KEYMGMT_AVAILABLE", ERR_LIB_EVP, EVP_R_NO_KEYMGMT_AVAILABLE},
+  #else
+    {"NO_KEYMGMT_AVAILABLE", 6, 199},
+  #endif
+  #ifdef EVP_R_NO_KEYMGMT_PRESENT
+    {"NO_KEYMGMT_PRESENT", ERR_LIB_EVP, EVP_R_NO_KEYMGMT_PRESENT},
+  #else
+    {"NO_KEYMGMT_PRESENT", 6, 196},
+  #endif
+  #ifdef EVP_R_NO_KEY_SET
+    {"NO_KEY_SET", ERR_LIB_EVP, EVP_R_NO_KEY_SET},
+  #else
+    {"NO_KEY_SET", 6, 154},
+  #endif
+  #ifdef EVP_R_NO_OPERATION_SET
+    {"NO_OPERATION_SET", ERR_LIB_EVP, EVP_R_NO_OPERATION_SET},
+  #else
+    {"NO_OPERATION_SET", 6, 149},
+  #endif
+  #ifdef EVP_R_NULL_MAC_PKEY_CTX
+    {"NULL_MAC_PKEY_CTX", ERR_LIB_EVP, EVP_R_NULL_MAC_PKEY_CTX},
+  #else
+    {"NULL_MAC_PKEY_CTX", 6, 208},
+  #endif
+  #ifdef EVP_R_ONLY_ONESHOT_SUPPORTED
+    {"ONLY_ONESHOT_SUPPORTED", ERR_LIB_EVP, EVP_R_ONLY_ONESHOT_SUPPORTED},
+  #else
+    {"ONLY_ONESHOT_SUPPORTED", 6, 177},
+  #endif
+  #ifdef EVP_R_OPERATION_NOT_INITIALIZED
+    {"OPERATION_NOT_INITIALIZED", ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED},
+  #else
+    {"OPERATION_NOT_INITIALIZED", 6, 151},
+  #endif
+  #ifdef EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE
+    {"OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE", ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE},
+  #else
+    {"OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE", 6, 150},
+  #endif
+  #ifdef EVP_R_OUTPUT_WOULD_OVERFLOW
+    {"OUTPUT_WOULD_OVERFLOW", ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW},
+  #else
+    {"OUTPUT_WOULD_OVERFLOW", 6, 202},
+  #endif
+  #ifdef EVP_R_PARAMETER_TOO_LARGE
+    {"PARAMETER_TOO_LARGE", ERR_LIB_EVP, EVP_R_PARAMETER_TOO_LARGE},
+  #else
+    {"PARAMETER_TOO_LARGE", 6, 187},
+  #endif
+  #ifdef EVP_R_PARTIALLY_OVERLAPPING
+    {"PARTIALLY_OVERLAPPING", ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING},
+  #else
+    {"PARTIALLY_OVERLAPPING", 6, 162},
+  #endif
+  #ifdef EVP_R_PBKDF2_ERROR
+    {"PBKDF2_ERROR", ERR_LIB_EVP, EVP_R_PBKDF2_ERROR},
+  #else
+    {"PBKDF2_ERROR", 6, 181},
+  #endif
+  #ifdef EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED
+    {"PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED", ERR_LIB_EVP, EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED},
+  #else
+    {"PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED", 6, 179},
+  #endif
+  #ifdef EVP_R_PRIVATE_KEY_DECODE_ERROR
+    {"PRIVATE_KEY_DECODE_ERROR", ERR_LIB_EVP, EVP_R_PRIVATE_KEY_DECODE_ERROR},
+  #else
+    {"PRIVATE_KEY_DECODE_ERROR", 6, 145},
+  #endif
+  #ifdef EVP_R_PRIVATE_KEY_ENCODE_ERROR
+    {"PRIVATE_KEY_ENCODE_ERROR", ERR_LIB_EVP, EVP_R_PRIVATE_KEY_ENCODE_ERROR},
+  #else
+    {"PRIVATE_KEY_ENCODE_ERROR", 6, 146},
+  #endif
+  #ifdef EVP_R_PUBLIC_KEY_NOT_RSA
+    {"PUBLIC_KEY_NOT_RSA", ERR_LIB_EVP, EVP_R_PUBLIC_KEY_NOT_RSA},
+  #else
+    {"PUBLIC_KEY_NOT_RSA", 6, 106},
+  #endif
+  #ifdef EVP_R_SETTING_XOF_FAILED
+    {"SETTING_XOF_FAILED", ERR_LIB_EVP, EVP_R_SETTING_XOF_FAILED},
+  #else
+    {"SETTING_XOF_FAILED", 6, 227},
+  #endif
+  #ifdef EVP_R_SET_DEFAULT_PROPERTY_FAILURE
+    {"SET_DEFAULT_PROPERTY_FAILURE", ERR_LIB_EVP, EVP_R_SET_DEFAULT_PROPERTY_FAILURE},
+  #else
+    {"SET_DEFAULT_PROPERTY_FAILURE", 6, 209},
+  #endif
+  #ifdef EVP_R_TOO_MANY_RECORDS
+    {"TOO_MANY_RECORDS", ERR_LIB_EVP, EVP_R_TOO_MANY_RECORDS},
+  #else
+    {"TOO_MANY_RECORDS", 6, 183},
+  #endif
+  #ifdef EVP_R_UNABLE_TO_ENABLE_LOCKING
+    {"UNABLE_TO_ENABLE_LOCKING", ERR_LIB_EVP, EVP_R_UNABLE_TO_ENABLE_LOCKING},
+  #else
+    {"UNABLE_TO_ENABLE_LOCKING", 6, 212},
+  #endif
+  #ifdef EVP_R_UNABLE_TO_GET_MAXIMUM_REQUEST_SIZE
+    {"UNABLE_TO_GET_MAXIMUM_REQUEST_SIZE", ERR_LIB_EVP, EVP_R_UNABLE_TO_GET_MAXIMUM_REQUEST_SIZE},
+  #else
+    {"UNABLE_TO_GET_MAXIMUM_REQUEST_SIZE", 6, 215},
+  #endif
+  #ifdef EVP_R_UNABLE_TO_GET_RANDOM_STRENGTH
+    {"UNABLE_TO_GET_RANDOM_STRENGTH", ERR_LIB_EVP, EVP_R_UNABLE_TO_GET_RANDOM_STRENGTH},
+  #else
+    {"UNABLE_TO_GET_RANDOM_STRENGTH", 6, 216},
+  #endif
+  #ifdef EVP_R_UNABLE_TO_LOCK_CONTEXT
+    {"UNABLE_TO_LOCK_CONTEXT", ERR_LIB_EVP, EVP_R_UNABLE_TO_LOCK_CONTEXT},
+  #else
+    {"UNABLE_TO_LOCK_CONTEXT", 6, 211},
+  #endif
+  #ifdef EVP_R_UNABLE_TO_SET_CALLBACKS
+    {"UNABLE_TO_SET_CALLBACKS", ERR_LIB_EVP, EVP_R_UNABLE_TO_SET_CALLBACKS},
+  #else
+    {"UNABLE_TO_SET_CALLBACKS", 6, 217},
+  #endif
+  #ifdef EVP_R_UNKNOWN_CIPHER
+    {"UNKNOWN_CIPHER", ERR_LIB_EVP, EVP_R_UNKNOWN_CIPHER},
+  #else
+    {"UNKNOWN_CIPHER", 6, 160},
+  #endif
+  #ifdef EVP_R_UNKNOWN_DIGEST
+    {"UNKNOWN_DIGEST", ERR_LIB_EVP, EVP_R_UNKNOWN_DIGEST},
+  #else
+    {"UNKNOWN_DIGEST", 6, 161},
+  #endif
+  #ifdef EVP_R_UNKNOWN_KEY_TYPE
+    {"UNKNOWN_KEY_TYPE", ERR_LIB_EVP, EVP_R_UNKNOWN_KEY_TYPE},
+  #else
+    {"UNKNOWN_KEY_TYPE", 6, 207},
+  #endif
+  #ifdef EVP_R_UNKNOWN_OPTION
+    {"UNKNOWN_OPTION", ERR_LIB_EVP, EVP_R_UNKNOWN_OPTION},
+  #else
+    {"UNKNOWN_OPTION", 6, 169},
+  #endif
+  #ifdef EVP_R_UNKNOWN_PBE_ALGORITHM
+    {"UNKNOWN_PBE_ALGORITHM", ERR_LIB_EVP, EVP_R_UNKNOWN_PBE_ALGORITHM},
+  #else
+    {"UNKNOWN_PBE_ALGORITHM", 6, 121},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_ALGORITHM
+    {"UNSUPPORTED_ALGORITHM", ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM},
+  #else
+    {"UNSUPPORTED_ALGORITHM", 6, 156},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_CIPHER
+    {"UNSUPPORTED_CIPHER", ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER},
+  #else
+    {"UNSUPPORTED_CIPHER", 6, 107},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_KEYLENGTH
+    {"UNSUPPORTED_KEYLENGTH", ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEYLENGTH},
+  #else
+    {"UNSUPPORTED_KEYLENGTH", 6, 123},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION
+    {"UNSUPPORTED_KEY_DERIVATION_FUNCTION", ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION},
+  #else
+    {"UNSUPPORTED_KEY_DERIVATION_FUNCTION", 6, 124},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_KEY_SIZE
+    {"UNSUPPORTED_KEY_SIZE", ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_SIZE},
+  #else
+    {"UNSUPPORTED_KEY_SIZE", 6, 108},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_KEY_TYPE
+    {"UNSUPPORTED_KEY_TYPE", ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE},
+  #else
+    {"UNSUPPORTED_KEY_TYPE", 6, 224},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_NUMBER_OF_ROUNDS
+    {"UNSUPPORTED_NUMBER_OF_ROUNDS", ERR_LIB_EVP, EVP_R_UNSUPPORTED_NUMBER_OF_ROUNDS},
+  #else
+    {"UNSUPPORTED_NUMBER_OF_ROUNDS", 6, 135},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_PRF
+    {"UNSUPPORTED_PRF", ERR_LIB_EVP, EVP_R_UNSUPPORTED_PRF},
+  #else
+    {"UNSUPPORTED_PRF", 6, 125},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM
+    {"UNSUPPORTED_PRIVATE_KEY_ALGORITHM", ERR_LIB_EVP, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM},
+  #else
+    {"UNSUPPORTED_PRIVATE_KEY_ALGORITHM", 6, 118},
+  #endif
+  #ifdef EVP_R_UNSUPPORTED_SALT_TYPE
+    {"UNSUPPORTED_SALT_TYPE", ERR_LIB_EVP, EVP_R_UNSUPPORTED_SALT_TYPE},
+  #else
+    {"UNSUPPORTED_SALT_TYPE", 6, 126},
+  #endif
+  #ifdef EVP_R_UPDATE_ERROR
+    {"UPDATE_ERROR", ERR_LIB_EVP, EVP_R_UPDATE_ERROR},
+  #else
+    {"UPDATE_ERROR", 6, 189},
+  #endif
+  #ifdef EVP_R_WRAP_MODE_NOT_ALLOWED
+    {"WRAP_MODE_NOT_ALLOWED", ERR_LIB_EVP, EVP_R_WRAP_MODE_NOT_ALLOWED},
+  #else
+    {"WRAP_MODE_NOT_ALLOWED", 6, 170},
+  #endif
+  #ifdef EVP_R_WRONG_FINAL_BLOCK_LENGTH
+    {"WRONG_FINAL_BLOCK_LENGTH", ERR_LIB_EVP, EVP_R_WRONG_FINAL_BLOCK_LENGTH},
+  #else
+    {"WRONG_FINAL_BLOCK_LENGTH", 6, 109},
+  #endif
+  #ifdef EVP_R_XTS_DATA_UNIT_IS_TOO_LARGE
+    {"XTS_DATA_UNIT_IS_TOO_LARGE", ERR_LIB_EVP, EVP_R_XTS_DATA_UNIT_IS_TOO_LARGE},
+  #else
+    {"XTS_DATA_UNIT_IS_TOO_LARGE", 6, 191},
+  #endif
+  #ifdef EVP_R_XTS_DUPLICATED_KEYS
+    {"XTS_DUPLICATED_KEYS", ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS},
+  #else
+    {"XTS_DUPLICATED_KEYS", 6, 192},
+  #endif
+  #ifdef HTTP_R_ASN1_LEN_EXCEEDS_MAX_RESP_LEN
+    {"ASN1_LEN_EXCEEDS_MAX_RESP_LEN", ERR_LIB_HTTP, HTTP_R_ASN1_LEN_EXCEEDS_MAX_RESP_LEN},
+  #else
+    {"ASN1_LEN_EXCEEDS_MAX_RESP_LEN", 61, 108},
+  #endif
+  #ifdef HTTP_R_CONNECT_FAILURE
+    {"CONNECT_FAILURE", ERR_LIB_HTTP, HTTP_R_CONNECT_FAILURE},
+  #else
+    {"CONNECT_FAILURE", 61, 100},
+  #endif
+  #ifdef HTTP_R_ERROR_PARSING_ASN1_LENGTH
+    {"ERROR_PARSING_ASN1_LENGTH", ERR_LIB_HTTP, HTTP_R_ERROR_PARSING_ASN1_LENGTH},
+  #else
+    {"ERROR_PARSING_ASN1_LENGTH", 61, 109},
+  #endif
+  #ifdef HTTP_R_ERROR_PARSING_CONTENT_LENGTH
+    {"ERROR_PARSING_CONTENT_LENGTH", ERR_LIB_HTTP, HTTP_R_ERROR_PARSING_CONTENT_LENGTH},
+  #else
+    {"ERROR_PARSING_CONTENT_LENGTH", 61, 119},
+  #endif
+  #ifdef HTTP_R_ERROR_PARSING_URL
+    {"ERROR_PARSING_URL", ERR_LIB_HTTP, HTTP_R_ERROR_PARSING_URL},
+  #else
+    {"ERROR_PARSING_URL", 61, 101},
+  #endif
+  #ifdef HTTP_R_ERROR_RECEIVING
+    {"ERROR_RECEIVING", ERR_LIB_HTTP, HTTP_R_ERROR_RECEIVING},
+  #else
+    {"ERROR_RECEIVING", 61, 103},
+  #endif
+  #ifdef HTTP_R_ERROR_SENDING
+    {"ERROR_SENDING", ERR_LIB_HTTP, HTTP_R_ERROR_SENDING},
+  #else
+    {"ERROR_SENDING", 61, 102},
+  #endif
+  #ifdef HTTP_R_FAILED_READING_DATA
+    {"FAILED_READING_DATA", ERR_LIB_HTTP, HTTP_R_FAILED_READING_DATA},
+  #else
+    {"FAILED_READING_DATA", 61, 128},
+  #endif
+  #ifdef HTTP_R_HEADER_PARSE_ERROR
+    {"HEADER_PARSE_ERROR", ERR_LIB_HTTP, HTTP_R_HEADER_PARSE_ERROR},
+  #else
+    {"HEADER_PARSE_ERROR", 61, 126},
+  #endif
+  #ifdef HTTP_R_INCONSISTENT_CONTENT_LENGTH
+    {"INCONSISTENT_CONTENT_LENGTH", ERR_LIB_HTTP, HTTP_R_INCONSISTENT_CONTENT_LENGTH},
+  #else
+    {"INCONSISTENT_CONTENT_LENGTH", 61, 120},
+  #endif
+  #ifdef HTTP_R_INVALID_PORT_NUMBER
+    {"INVALID_PORT_NUMBER", ERR_LIB_HTTP, HTTP_R_INVALID_PORT_NUMBER},
+  #else
+    {"INVALID_PORT_NUMBER", 61, 123},
+  #endif
+  #ifdef HTTP_R_INVALID_URL_PATH
+    {"INVALID_URL_PATH", ERR_LIB_HTTP, HTTP_R_INVALID_URL_PATH},
+  #else
+    {"INVALID_URL_PATH", 61, 125},
+  #endif
+  #ifdef HTTP_R_INVALID_URL_SCHEME
+    {"INVALID_URL_SCHEME", ERR_LIB_HTTP, HTTP_R_INVALID_URL_SCHEME},
+  #else
+    {"INVALID_URL_SCHEME", 61, 124},
+  #endif
+  #ifdef HTTP_R_MAX_RESP_LEN_EXCEEDED
+    {"MAX_RESP_LEN_EXCEEDED", ERR_LIB_HTTP, HTTP_R_MAX_RESP_LEN_EXCEEDED},
+  #else
+    {"MAX_RESP_LEN_EXCEEDED", 61, 117},
+  #endif
+  #ifdef HTTP_R_MISSING_ASN1_ENCODING
+    {"MISSING_ASN1_ENCODING", ERR_LIB_HTTP, HTTP_R_MISSING_ASN1_ENCODING},
+  #else
+    {"MISSING_ASN1_ENCODING", 61, 110},
+  #endif
+  #ifdef HTTP_R_MISSING_CONTENT_TYPE
+    {"MISSING_CONTENT_TYPE", ERR_LIB_HTTP, HTTP_R_MISSING_CONTENT_TYPE},
+  #else
+    {"MISSING_CONTENT_TYPE", 61, 121},
+  #endif
+  #ifdef HTTP_R_MISSING_REDIRECT_LOCATION
+    {"MISSING_REDIRECT_LOCATION", ERR_LIB_HTTP, HTTP_R_MISSING_REDIRECT_LOCATION},
+  #else
+    {"MISSING_REDIRECT_LOCATION", 61, 111},
+  #endif
+  #ifdef HTTP_R_RECEIVED_ERROR
+    {"RECEIVED_ERROR", ERR_LIB_HTTP, HTTP_R_RECEIVED_ERROR},
+  #else
+    {"RECEIVED_ERROR", 61, 105},
+  #endif
+  #ifdef HTTP_R_RECEIVED_WRONG_HTTP_VERSION
+    {"RECEIVED_WRONG_HTTP_VERSION", ERR_LIB_HTTP, HTTP_R_RECEIVED_WRONG_HTTP_VERSION},
+  #else
+    {"RECEIVED_WRONG_HTTP_VERSION", 61, 106},
+  #endif
+  #ifdef HTTP_R_REDIRECTION_FROM_HTTPS_TO_HTTP
+    {"REDIRECTION_FROM_HTTPS_TO_HTTP", ERR_LIB_HTTP, HTTP_R_REDIRECTION_FROM_HTTPS_TO_HTTP},
+  #else
+    {"REDIRECTION_FROM_HTTPS_TO_HTTP", 61, 112},
+  #endif
+  #ifdef HTTP_R_REDIRECTION_NOT_ENABLED
+    {"REDIRECTION_NOT_ENABLED", ERR_LIB_HTTP, HTTP_R_REDIRECTION_NOT_ENABLED},
+  #else
+    {"REDIRECTION_NOT_ENABLED", 61, 116},
+  #endif
+  #ifdef HTTP_R_RESPONSE_LINE_TOO_LONG
+    {"RESPONSE_LINE_TOO_LONG", ERR_LIB_HTTP, HTTP_R_RESPONSE_LINE_TOO_LONG},
+  #else
+    {"RESPONSE_LINE_TOO_LONG", 61, 113},
+  #endif
+  #ifdef HTTP_R_RESPONSE_PARSE_ERROR
+    {"RESPONSE_PARSE_ERROR", ERR_LIB_HTTP, HTTP_R_RESPONSE_PARSE_ERROR},
+  #else
+    {"RESPONSE_PARSE_ERROR", 61, 104},
+  #endif
+  #ifdef HTTP_R_RETRY_TIMEOUT
+    {"RETRY_TIMEOUT", ERR_LIB_HTTP, HTTP_R_RETRY_TIMEOUT},
+  #else
+    {"RETRY_TIMEOUT", 61, 129},
+  #endif
+  #ifdef HTTP_R_SERVER_CANCELED_CONNECTION
+    {"SERVER_CANCELED_CONNECTION", ERR_LIB_HTTP, HTTP_R_SERVER_CANCELED_CONNECTION},
+  #else
+    {"SERVER_CANCELED_CONNECTION", 61, 127},
+  #endif
+  #ifdef HTTP_R_SOCK_NOT_SUPPORTED
+    {"SOCK_NOT_SUPPORTED", ERR_LIB_HTTP, HTTP_R_SOCK_NOT_SUPPORTED},
+  #else
+    {"SOCK_NOT_SUPPORTED", 61, 122},
+  #endif
+  #ifdef HTTP_R_STATUS_CODE_UNSUPPORTED
+    {"STATUS_CODE_UNSUPPORTED", ERR_LIB_HTTP, HTTP_R_STATUS_CODE_UNSUPPORTED},
+  #else
+    {"STATUS_CODE_UNSUPPORTED", 61, 114},
+  #endif
+  #ifdef HTTP_R_TLS_NOT_ENABLED
+    {"TLS_NOT_ENABLED", ERR_LIB_HTTP, HTTP_R_TLS_NOT_ENABLED},
+  #else
+    {"TLS_NOT_ENABLED", 61, 107},
+  #endif
+  #ifdef HTTP_R_TOO_MANY_REDIRECTIONS
+    {"TOO_MANY_REDIRECTIONS", ERR_LIB_HTTP, HTTP_R_TOO_MANY_REDIRECTIONS},
+  #else
+    {"TOO_MANY_REDIRECTIONS", 61, 115},
+  #endif
+  #ifdef HTTP_R_UNEXPECTED_CONTENT_TYPE
+    {"UNEXPECTED_CONTENT_TYPE", ERR_LIB_HTTP, HTTP_R_UNEXPECTED_CONTENT_TYPE},
+  #else
+    {"UNEXPECTED_CONTENT_TYPE", 61, 118},
+  #endif
+  #ifdef OBJ_R_OID_EXISTS
+    {"OID_EXISTS", ERR_LIB_OBJ, OBJ_R_OID_EXISTS},
+  #else
+    {"OID_EXISTS", 8, 102},
+  #endif
+  #ifdef OBJ_R_UNKNOWN_NID
+    {"UNKNOWN_NID", ERR_LIB_OBJ, OBJ_R_UNKNOWN_NID},
+  #else
+    {"UNKNOWN_NID", 8, 101},
+  #endif
+  #ifdef OBJ_R_UNKNOWN_OBJECT_NAME
+    {"UNKNOWN_OBJECT_NAME", ERR_LIB_OBJ, OBJ_R_UNKNOWN_OBJECT_NAME},
+  #else
+    {"UNKNOWN_OBJECT_NAME", 8, 103},
+  #endif
+  #ifdef OCSP_R_CERTIFICATE_VERIFY_ERROR
+    {"CERTIFICATE_VERIFY_ERROR", ERR_LIB_OCSP, OCSP_R_CERTIFICATE_VERIFY_ERROR},
+  #else
+    {"CERTIFICATE_VERIFY_ERROR", 39, 101},
+  #endif
+  #ifdef OCSP_R_DIGEST_ERR
+    {"DIGEST_ERR", ERR_LIB_OCSP, OCSP_R_DIGEST_ERR},
+  #else
+    {"DIGEST_ERR", 39, 102},
+  #endif
+  #ifdef OCSP_R_DIGEST_NAME_ERR
+    {"DIGEST_NAME_ERR", ERR_LIB_OCSP, OCSP_R_DIGEST_NAME_ERR},
+  #else
+    {"DIGEST_NAME_ERR", 39, 106},
+  #endif
+  #ifdef OCSP_R_DIGEST_SIZE_ERR
+    {"DIGEST_SIZE_ERR", ERR_LIB_OCSP, OCSP_R_DIGEST_SIZE_ERR},
+  #else
+    {"DIGEST_SIZE_ERR", 39, 107},
+  #endif
+  #ifdef OCSP_R_ERROR_IN_NEXTUPDATE_FIELD
+    {"ERROR_IN_NEXTUPDATE_FIELD", ERR_LIB_OCSP, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD},
+  #else
+    {"ERROR_IN_NEXTUPDATE_FIELD", 39, 122},
+  #endif
+  #ifdef OCSP_R_ERROR_IN_THISUPDATE_FIELD
+    {"ERROR_IN_THISUPDATE_FIELD", ERR_LIB_OCSP, OCSP_R_ERROR_IN_THISUPDATE_FIELD},
+  #else
+    {"ERROR_IN_THISUPDATE_FIELD", 39, 123},
+  #endif
+  #ifdef OCSP_R_MISSING_OCSPSIGNING_USAGE
+    {"MISSING_OCSPSIGNING_USAGE", ERR_LIB_OCSP, OCSP_R_MISSING_OCSPSIGNING_USAGE},
+  #else
+    {"MISSING_OCSPSIGNING_USAGE", 39, 103},
+  #endif
+  #ifdef OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE
+    {"NEXTUPDATE_BEFORE_THISUPDATE", ERR_LIB_OCSP, OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE},
+  #else
+    {"NEXTUPDATE_BEFORE_THISUPDATE", 39, 124},
+  #endif
+  #ifdef OCSP_R_NOT_BASIC_RESPONSE
+    {"NOT_BASIC_RESPONSE", ERR_LIB_OCSP, OCSP_R_NOT_BASIC_RESPONSE},
+  #else
+    {"NOT_BASIC_RESPONSE", 39, 104},
+  #endif
+  #ifdef OCSP_R_NO_CERTIFICATES_IN_CHAIN
+    {"NO_CERTIFICATES_IN_CHAIN", ERR_LIB_OCSP, OCSP_R_NO_CERTIFICATES_IN_CHAIN},
+  #else
+    {"NO_CERTIFICATES_IN_CHAIN", 39, 105},
+  #endif
+  #ifdef OCSP_R_NO_RESPONSE_DATA
+    {"NO_RESPONSE_DATA", ERR_LIB_OCSP, OCSP_R_NO_RESPONSE_DATA},
+  #else
+    {"NO_RESPONSE_DATA", 39, 108},
+  #endif
+  #ifdef OCSP_R_NO_REVOKED_TIME
+    {"NO_REVOKED_TIME", ERR_LIB_OCSP, OCSP_R_NO_REVOKED_TIME},
+  #else
+    {"NO_REVOKED_TIME", 39, 109},
+  #endif
+  #ifdef OCSP_R_NO_SIGNER_KEY
+    {"NO_SIGNER_KEY", ERR_LIB_OCSP, OCSP_R_NO_SIGNER_KEY},
+  #else
+    {"NO_SIGNER_KEY", 39, 130},
+  #endif
+  #ifdef OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", ERR_LIB_OCSP, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE},
+  #else
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", 39, 110},
+  #endif
+  #ifdef OCSP_R_REQUEST_NOT_SIGNED
+    {"REQUEST_NOT_SIGNED", ERR_LIB_OCSP, OCSP_R_REQUEST_NOT_SIGNED},
+  #else
+    {"REQUEST_NOT_SIGNED", 39, 128},
+  #endif
+  #ifdef OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA
+    {"RESPONSE_CONTAINS_NO_REVOCATION_DATA", ERR_LIB_OCSP, OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA},
+  #else
+    {"RESPONSE_CONTAINS_NO_REVOCATION_DATA", 39, 111},
+  #endif
+  #ifdef OCSP_R_ROOT_CA_NOT_TRUSTED
+    {"ROOT_CA_NOT_TRUSTED", ERR_LIB_OCSP, OCSP_R_ROOT_CA_NOT_TRUSTED},
+  #else
+    {"ROOT_CA_NOT_TRUSTED", 39, 112},
+  #endif
+  #ifdef OCSP_R_SIGNATURE_FAILURE
+    {"SIGNATURE_FAILURE", ERR_LIB_OCSP, OCSP_R_SIGNATURE_FAILURE},
+  #else
+    {"SIGNATURE_FAILURE", 39, 117},
+  #endif
+  #ifdef OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND
+    {"SIGNER_CERTIFICATE_NOT_FOUND", ERR_LIB_OCSP, OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND},
+  #else
+    {"SIGNER_CERTIFICATE_NOT_FOUND", 39, 118},
+  #endif
+  #ifdef OCSP_R_STATUS_EXPIRED
+    {"STATUS_EXPIRED", ERR_LIB_OCSP, OCSP_R_STATUS_EXPIRED},
+  #else
+    {"STATUS_EXPIRED", 39, 125},
+  #endif
+  #ifdef OCSP_R_STATUS_NOT_YET_VALID
+    {"STATUS_NOT_YET_VALID", ERR_LIB_OCSP, OCSP_R_STATUS_NOT_YET_VALID},
+  #else
+    {"STATUS_NOT_YET_VALID", 39, 126},
+  #endif
+  #ifdef OCSP_R_STATUS_TOO_OLD
+    {"STATUS_TOO_OLD", ERR_LIB_OCSP, OCSP_R_STATUS_TOO_OLD},
+  #else
+    {"STATUS_TOO_OLD", 39, 127},
+  #endif
+  #ifdef OCSP_R_UNKNOWN_MESSAGE_DIGEST
+    {"UNKNOWN_MESSAGE_DIGEST", ERR_LIB_OCSP, OCSP_R_UNKNOWN_MESSAGE_DIGEST},
+  #else
+    {"UNKNOWN_MESSAGE_DIGEST", 39, 119},
+  #endif
+  #ifdef OCSP_R_UNKNOWN_NID
+    {"UNKNOWN_NID", ERR_LIB_OCSP, OCSP_R_UNKNOWN_NID},
+  #else
+    {"UNKNOWN_NID", 39, 120},
+  #endif
+  #ifdef OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE
+    {"UNSUPPORTED_REQUESTORNAME_TYPE", ERR_LIB_OCSP, OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE},
+  #else
+    {"UNSUPPORTED_REQUESTORNAME_TYPE", 39, 129},
+  #endif
+  #ifdef OSSL_DECODER_R_COULD_NOT_DECODE_OBJECT
+    {"COULD_NOT_DECODE_OBJECT", ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_COULD_NOT_DECODE_OBJECT},
+  #else
+    {"COULD_NOT_DECODE_OBJECT", 60, 101},
+  #endif
+  #ifdef OSSL_DECODER_R_DECODER_NOT_FOUND
+    {"DECODER_NOT_FOUND", ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_DECODER_NOT_FOUND},
+  #else
+    {"DECODER_NOT_FOUND", 60, 102},
+  #endif
+  #ifdef OSSL_DECODER_R_MISSING_GET_PARAMS
+    {"MISSING_GET_PARAMS", ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_MISSING_GET_PARAMS},
+  #else
+    {"MISSING_GET_PARAMS", 60, 100},
+  #endif
+  #ifdef OSSL_ENCODER_R_ENCODER_NOT_FOUND
+    {"ENCODER_NOT_FOUND", ERR_LIB_OSSL_ENCODER, OSSL_ENCODER_R_ENCODER_NOT_FOUND},
+  #else
+    {"ENCODER_NOT_FOUND", 59, 101},
+  #endif
+  #ifdef OSSL_ENCODER_R_INCORRECT_PROPERTY_QUERY
+    {"INCORRECT_PROPERTY_QUERY", ERR_LIB_OSSL_ENCODER, OSSL_ENCODER_R_INCORRECT_PROPERTY_QUERY},
+  #else
+    {"INCORRECT_PROPERTY_QUERY", 59, 100},
+  #endif
+  #ifdef OSSL_ENCODER_R_MISSING_GET_PARAMS
+    {"MISSING_GET_PARAMS", ERR_LIB_OSSL_ENCODER, OSSL_ENCODER_R_MISSING_GET_PARAMS},
+  #else
+    {"MISSING_GET_PARAMS", 59, 102},
+  #endif
+  #ifdef OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE
+    {"AMBIGUOUS_CONTENT_TYPE", ERR_LIB_OSSL_STORE, OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE},
+  #else
+    {"AMBIGUOUS_CONTENT_TYPE", 44, 107},
+  #endif
+  #ifdef OSSL_STORE_R_BAD_PASSWORD_READ
+    {"BAD_PASSWORD_READ", ERR_LIB_OSSL_STORE, OSSL_STORE_R_BAD_PASSWORD_READ},
+  #else
+    {"BAD_PASSWORD_READ", 44, 115},
+  #endif
+  #ifdef OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC
+    {"ERROR_VERIFYING_PKCS12_MAC", ERR_LIB_OSSL_STORE, OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC},
+  #else
+    {"ERROR_VERIFYING_PKCS12_MAC", 44, 113},
+  #endif
+  #ifdef OSSL_STORE_R_FINGERPRINT_SIZE_DOES_NOT_MATCH_DIGEST
+    {"FINGERPRINT_SIZE_DOES_NOT_MATCH_DIGEST", ERR_LIB_OSSL_STORE, OSSL_STORE_R_FINGERPRINT_SIZE_DOES_NOT_MATCH_DIGEST},
+  #else
+    {"FINGERPRINT_SIZE_DOES_NOT_MATCH_DIGEST", 44, 121},
+  #endif
+  #ifdef OSSL_STORE_R_INVALID_SCHEME
+    {"INVALID_SCHEME", ERR_LIB_OSSL_STORE, OSSL_STORE_R_INVALID_SCHEME},
+  #else
+    {"INVALID_SCHEME", 44, 106},
+  #endif
+  #ifdef OSSL_STORE_R_IS_NOT_A
+    {"IS_NOT_A", ERR_LIB_OSSL_STORE, OSSL_STORE_R_IS_NOT_A},
+  #else
+    {"IS_NOT_A", 44, 112},
+  #endif
+  #ifdef OSSL_STORE_R_LOADER_INCOMPLETE
+    {"LOADER_INCOMPLETE", ERR_LIB_OSSL_STORE, OSSL_STORE_R_LOADER_INCOMPLETE},
+  #else
+    {"LOADER_INCOMPLETE", 44, 116},
+  #endif
+  #ifdef OSSL_STORE_R_LOADING_STARTED
+    {"LOADING_STARTED", ERR_LIB_OSSL_STORE, OSSL_STORE_R_LOADING_STARTED},
+  #else
+    {"LOADING_STARTED", 44, 117},
+  #endif
+  #ifdef OSSL_STORE_R_NOT_A_CERTIFICATE
+    {"NOT_A_CERTIFICATE", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NOT_A_CERTIFICATE},
+  #else
+    {"NOT_A_CERTIFICATE", 44, 100},
+  #endif
+  #ifdef OSSL_STORE_R_NOT_A_CRL
+    {"NOT_A_CRL", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NOT_A_CRL},
+  #else
+    {"NOT_A_CRL", 44, 101},
+  #endif
+  #ifdef OSSL_STORE_R_NOT_A_NAME
+    {"NOT_A_NAME", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NOT_A_NAME},
+  #else
+    {"NOT_A_NAME", 44, 103},
+  #endif
+  #ifdef OSSL_STORE_R_NOT_A_PRIVATE_KEY
+    {"NOT_A_PRIVATE_KEY", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NOT_A_PRIVATE_KEY},
+  #else
+    {"NOT_A_PRIVATE_KEY", 44, 102},
+  #endif
+  #ifdef OSSL_STORE_R_NOT_A_PUBLIC_KEY
+    {"NOT_A_PUBLIC_KEY", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NOT_A_PUBLIC_KEY},
+  #else
+    {"NOT_A_PUBLIC_KEY", 44, 122},
+  #endif
+  #ifdef OSSL_STORE_R_NOT_PARAMETERS
+    {"NOT_PARAMETERS", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NOT_PARAMETERS},
+  #else
+    {"NOT_PARAMETERS", 44, 104},
+  #endif
+  #ifdef OSSL_STORE_R_NO_LOADERS_FOUND
+    {"NO_LOADERS_FOUND", ERR_LIB_OSSL_STORE, OSSL_STORE_R_NO_LOADERS_FOUND},
+  #else
+    {"NO_LOADERS_FOUND", 44, 123},
+  #endif
+  #ifdef OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR
+    {"PASSPHRASE_CALLBACK_ERROR", ERR_LIB_OSSL_STORE, OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR},
+  #else
+    {"PASSPHRASE_CALLBACK_ERROR", 44, 114},
+  #endif
+  #ifdef OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE
+    {"PATH_MUST_BE_ABSOLUTE", ERR_LIB_OSSL_STORE, OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE},
+  #else
+    {"PATH_MUST_BE_ABSOLUTE", 44, 108},
+  #endif
+  #ifdef OSSL_STORE_R_SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES
+    {"SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES", ERR_LIB_OSSL_STORE, OSSL_STORE_R_SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES},
+  #else
+    {"SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES", 44, 119},
+  #endif
+  #ifdef OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED
+    {"UI_PROCESS_INTERRUPTED_OR_CANCELLED", ERR_LIB_OSSL_STORE, OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED},
+  #else
+    {"UI_PROCESS_INTERRUPTED_OR_CANCELLED", 44, 109},
+  #endif
+  #ifdef OSSL_STORE_R_UNREGISTERED_SCHEME
+    {"UNREGISTERED_SCHEME", ERR_LIB_OSSL_STORE, OSSL_STORE_R_UNREGISTERED_SCHEME},
+  #else
+    {"UNREGISTERED_SCHEME", 44, 105},
+  #endif
+  #ifdef OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE
+    {"UNSUPPORTED_CONTENT_TYPE", ERR_LIB_OSSL_STORE, OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE},
+  #else
+    {"UNSUPPORTED_CONTENT_TYPE", 44, 110},
+  #endif
+  #ifdef OSSL_STORE_R_UNSUPPORTED_OPERATION
+    {"UNSUPPORTED_OPERATION", ERR_LIB_OSSL_STORE, OSSL_STORE_R_UNSUPPORTED_OPERATION},
+  #else
+    {"UNSUPPORTED_OPERATION", 44, 118},
+  #endif
+  #ifdef OSSL_STORE_R_UNSUPPORTED_SEARCH_TYPE
+    {"UNSUPPORTED_SEARCH_TYPE", ERR_LIB_OSSL_STORE, OSSL_STORE_R_UNSUPPORTED_SEARCH_TYPE},
+  #else
+    {"UNSUPPORTED_SEARCH_TYPE", 44, 120},
+  #endif
+  #ifdef OSSL_STORE_R_URI_AUTHORITY_UNSUPPORTED
+    {"URI_AUTHORITY_UNSUPPORTED", ERR_LIB_OSSL_STORE, OSSL_STORE_R_URI_AUTHORITY_UNSUPPORTED},
+  #else
+    {"URI_AUTHORITY_UNSUPPORTED", 44, 111},
+  #endif
+  #ifdef PEM_R_BAD_BASE64_DECODE
+    {"BAD_BASE64_DECODE", ERR_LIB_PEM, PEM_R_BAD_BASE64_DECODE},
+  #else
+    {"BAD_BASE64_DECODE", 9, 100},
+  #endif
+  #ifdef PEM_R_BAD_DECRYPT
+    {"BAD_DECRYPT", ERR_LIB_PEM, PEM_R_BAD_DECRYPT},
+  #else
+    {"BAD_DECRYPT", 9, 101},
+  #endif
+  #ifdef PEM_R_BAD_END_LINE
+    {"BAD_END_LINE", ERR_LIB_PEM, PEM_R_BAD_END_LINE},
+  #else
+    {"BAD_END_LINE", 9, 102},
+  #endif
+  #ifdef PEM_R_BAD_IV_CHARS
+    {"BAD_IV_CHARS", ERR_LIB_PEM, PEM_R_BAD_IV_CHARS},
+  #else
+    {"BAD_IV_CHARS", 9, 103},
+  #endif
+  #ifdef PEM_R_BAD_MAGIC_NUMBER
+    {"BAD_MAGIC_NUMBER", ERR_LIB_PEM, PEM_R_BAD_MAGIC_NUMBER},
+  #else
+    {"BAD_MAGIC_NUMBER", 9, 116},
+  #endif
+  #ifdef PEM_R_BAD_PASSWORD_READ
+    {"BAD_PASSWORD_READ", ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ},
+  #else
+    {"BAD_PASSWORD_READ", 9, 104},
+  #endif
+  #ifdef PEM_R_BAD_VERSION_NUMBER
+    {"BAD_VERSION_NUMBER", ERR_LIB_PEM, PEM_R_BAD_VERSION_NUMBER},
+  #else
+    {"BAD_VERSION_NUMBER", 9, 117},
+  #endif
+  #ifdef PEM_R_BIO_WRITE_FAILURE
+    {"BIO_WRITE_FAILURE", ERR_LIB_PEM, PEM_R_BIO_WRITE_FAILURE},
+  #else
+    {"BIO_WRITE_FAILURE", 9, 118},
+  #endif
+  #ifdef PEM_R_CIPHER_IS_NULL
+    {"CIPHER_IS_NULL", ERR_LIB_PEM, PEM_R_CIPHER_IS_NULL},
+  #else
+    {"CIPHER_IS_NULL", 9, 127},
+  #endif
+  #ifdef PEM_R_ERROR_CONVERTING_PRIVATE_KEY
+    {"ERROR_CONVERTING_PRIVATE_KEY", ERR_LIB_PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY},
+  #else
+    {"ERROR_CONVERTING_PRIVATE_KEY", 9, 115},
+  #endif
+  #ifdef PEM_R_EXPECTING_DSS_KEY_BLOB
+    {"EXPECTING_DSS_KEY_BLOB", ERR_LIB_PEM, PEM_R_EXPECTING_DSS_KEY_BLOB},
+  #else
+    {"EXPECTING_DSS_KEY_BLOB", 9, 131},
+  #endif
+  #ifdef PEM_R_EXPECTING_PRIVATE_KEY_BLOB
+    {"EXPECTING_PRIVATE_KEY_BLOB", ERR_LIB_PEM, PEM_R_EXPECTING_PRIVATE_KEY_BLOB},
+  #else
+    {"EXPECTING_PRIVATE_KEY_BLOB", 9, 119},
+  #endif
+  #ifdef PEM_R_EXPECTING_PUBLIC_KEY_BLOB
+    {"EXPECTING_PUBLIC_KEY_BLOB", ERR_LIB_PEM, PEM_R_EXPECTING_PUBLIC_KEY_BLOB},
+  #else
+    {"EXPECTING_PUBLIC_KEY_BLOB", 9, 120},
+  #endif
+  #ifdef PEM_R_EXPECTING_RSA_KEY_BLOB
+    {"EXPECTING_RSA_KEY_BLOB", ERR_LIB_PEM, PEM_R_EXPECTING_RSA_KEY_BLOB},
+  #else
+    {"EXPECTING_RSA_KEY_BLOB", 9, 132},
+  #endif
+  #ifdef PEM_R_HEADER_TOO_LONG
+    {"HEADER_TOO_LONG", ERR_LIB_PEM, PEM_R_HEADER_TOO_LONG},
+  #else
+    {"HEADER_TOO_LONG", 9, 128},
+  #endif
+  #ifdef PEM_R_INCONSISTENT_HEADER
+    {"INCONSISTENT_HEADER", ERR_LIB_PEM, PEM_R_INCONSISTENT_HEADER},
+  #else
+    {"INCONSISTENT_HEADER", 9, 121},
+  #endif
+  #ifdef PEM_R_KEYBLOB_HEADER_PARSE_ERROR
+    {"KEYBLOB_HEADER_PARSE_ERROR", ERR_LIB_PEM, PEM_R_KEYBLOB_HEADER_PARSE_ERROR},
+  #else
+    {"KEYBLOB_HEADER_PARSE_ERROR", 9, 122},
+  #endif
+  #ifdef PEM_R_KEYBLOB_TOO_SHORT
+    {"KEYBLOB_TOO_SHORT", ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT},
+  #else
+    {"KEYBLOB_TOO_SHORT", 9, 123},
+  #endif
+  #ifdef PEM_R_MISSING_DEK_IV
+    {"MISSING_DEK_IV", ERR_LIB_PEM, PEM_R_MISSING_DEK_IV},
+  #else
+    {"MISSING_DEK_IV", 9, 129},
+  #endif
+  #ifdef PEM_R_NOT_DEK_INFO
+    {"NOT_DEK_INFO", ERR_LIB_PEM, PEM_R_NOT_DEK_INFO},
+  #else
+    {"NOT_DEK_INFO", 9, 105},
+  #endif
+  #ifdef PEM_R_NOT_ENCRYPTED
+    {"NOT_ENCRYPTED", ERR_LIB_PEM, PEM_R_NOT_ENCRYPTED},
+  #else
+    {"NOT_ENCRYPTED", 9, 106},
+  #endif
+  #ifdef PEM_R_NOT_PROC_TYPE
+    {"NOT_PROC_TYPE", ERR_LIB_PEM, PEM_R_NOT_PROC_TYPE},
+  #else
+    {"NOT_PROC_TYPE", 9, 107},
+  #endif
+  #ifdef PEM_R_NO_START_LINE
+    {"NO_START_LINE", ERR_LIB_PEM, PEM_R_NO_START_LINE},
+  #else
+    {"NO_START_LINE", 9, 108},
+  #endif
+  #ifdef PEM_R_PROBLEMS_GETTING_PASSWORD
+    {"PROBLEMS_GETTING_PASSWORD", ERR_LIB_PEM, PEM_R_PROBLEMS_GETTING_PASSWORD},
+  #else
+    {"PROBLEMS_GETTING_PASSWORD", 9, 109},
+  #endif
+  #ifdef PEM_R_PVK_DATA_TOO_SHORT
+    {"PVK_DATA_TOO_SHORT", ERR_LIB_PEM, PEM_R_PVK_DATA_TOO_SHORT},
+  #else
+    {"PVK_DATA_TOO_SHORT", 9, 124},
+  #endif
+  #ifdef PEM_R_PVK_TOO_SHORT
+    {"PVK_TOO_SHORT", ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT},
+  #else
+    {"PVK_TOO_SHORT", 9, 125},
+  #endif
+  #ifdef PEM_R_READ_KEY
+    {"READ_KEY", ERR_LIB_PEM, PEM_R_READ_KEY},
+  #else
+    {"READ_KEY", 9, 111},
+  #endif
+  #ifdef PEM_R_SHORT_HEADER
+    {"SHORT_HEADER", ERR_LIB_PEM, PEM_R_SHORT_HEADER},
+  #else
+    {"SHORT_HEADER", 9, 112},
+  #endif
+  #ifdef PEM_R_UNEXPECTED_DEK_IV
+    {"UNEXPECTED_DEK_IV", ERR_LIB_PEM, PEM_R_UNEXPECTED_DEK_IV},
+  #else
+    {"UNEXPECTED_DEK_IV", 9, 130},
+  #endif
+  #ifdef PEM_R_UNSUPPORTED_CIPHER
+    {"UNSUPPORTED_CIPHER", ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER},
+  #else
+    {"UNSUPPORTED_CIPHER", 9, 113},
+  #endif
+  #ifdef PEM_R_UNSUPPORTED_ENCRYPTION
+    {"UNSUPPORTED_ENCRYPTION", ERR_LIB_PEM, PEM_R_UNSUPPORTED_ENCRYPTION},
+  #else
+    {"UNSUPPORTED_ENCRYPTION", 9, 114},
+  #endif
+  #ifdef PEM_R_UNSUPPORTED_KEY_COMPONENTS
+    {"UNSUPPORTED_KEY_COMPONENTS", ERR_LIB_PEM, PEM_R_UNSUPPORTED_KEY_COMPONENTS},
+  #else
+    {"UNSUPPORTED_KEY_COMPONENTS", 9, 126},
+  #endif
+  #ifdef PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE
+    {"UNSUPPORTED_PUBLIC_KEY_TYPE", ERR_LIB_PEM, PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE},
+  #else
+    {"UNSUPPORTED_PUBLIC_KEY_TYPE", 9, 110},
+  #endif
+  #ifdef PKCS12_R_CANT_PACK_STRUCTURE
+    {"CANT_PACK_STRUCTURE", ERR_LIB_PKCS12, PKCS12_R_CANT_PACK_STRUCTURE},
+  #else
+    {"CANT_PACK_STRUCTURE", 35, 100},
+  #endif
+  #ifdef PKCS12_R_CONTENT_TYPE_NOT_DATA
+    {"CONTENT_TYPE_NOT_DATA", ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA},
+  #else
+    {"CONTENT_TYPE_NOT_DATA", 35, 121},
+  #endif
+  #ifdef PKCS12_R_DECODE_ERROR
+    {"DECODE_ERROR", ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR},
+  #else
+    {"DECODE_ERROR", 35, 101},
+  #endif
+  #ifdef PKCS12_R_ENCODE_ERROR
+    {"ENCODE_ERROR", ERR_LIB_PKCS12, PKCS12_R_ENCODE_ERROR},
+  #else
+    {"ENCODE_ERROR", 35, 102},
+  #endif
+  #ifdef PKCS12_R_ENCRYPT_ERROR
+    {"ENCRYPT_ERROR", ERR_LIB_PKCS12, PKCS12_R_ENCRYPT_ERROR},
+  #else
+    {"ENCRYPT_ERROR", 35, 103},
+  #endif
+  #ifdef PKCS12_R_ERROR_SETTING_ENCRYPTED_DATA_TYPE
+    {"ERROR_SETTING_ENCRYPTED_DATA_TYPE", ERR_LIB_PKCS12, PKCS12_R_ERROR_SETTING_ENCRYPTED_DATA_TYPE},
+  #else
+    {"ERROR_SETTING_ENCRYPTED_DATA_TYPE", 35, 120},
+  #endif
+  #ifdef PKCS12_R_INVALID_NULL_ARGUMENT
+    {"INVALID_NULL_ARGUMENT", ERR_LIB_PKCS12, PKCS12_R_INVALID_NULL_ARGUMENT},
+  #else
+    {"INVALID_NULL_ARGUMENT", 35, 104},
+  #endif
+  #ifdef PKCS12_R_INVALID_NULL_PKCS12_POINTER
+    {"INVALID_NULL_PKCS12_POINTER", ERR_LIB_PKCS12, PKCS12_R_INVALID_NULL_PKCS12_POINTER},
+  #else
+    {"INVALID_NULL_PKCS12_POINTER", 35, 105},
+  #endif
+  #ifdef PKCS12_R_INVALID_TYPE
+    {"INVALID_TYPE", ERR_LIB_PKCS12, PKCS12_R_INVALID_TYPE},
+  #else
+    {"INVALID_TYPE", 35, 112},
+  #endif
+  #ifdef PKCS12_R_IV_GEN_ERROR
+    {"IV_GEN_ERROR", ERR_LIB_PKCS12, PKCS12_R_IV_GEN_ERROR},
+  #else
+    {"IV_GEN_ERROR", 35, 106},
+  #endif
+  #ifdef PKCS12_R_KEY_GEN_ERROR
+    {"KEY_GEN_ERROR", ERR_LIB_PKCS12, PKCS12_R_KEY_GEN_ERROR},
+  #else
+    {"KEY_GEN_ERROR", 35, 107},
+  #endif
+  #ifdef PKCS12_R_MAC_ABSENT
+    {"MAC_ABSENT", ERR_LIB_PKCS12, PKCS12_R_MAC_ABSENT},
+  #else
+    {"MAC_ABSENT", 35, 108},
+  #endif
+  #ifdef PKCS12_R_MAC_GENERATION_ERROR
+    {"MAC_GENERATION_ERROR", ERR_LIB_PKCS12, PKCS12_R_MAC_GENERATION_ERROR},
+  #else
+    {"MAC_GENERATION_ERROR", 35, 109},
+  #endif
+  #ifdef PKCS12_R_MAC_SETUP_ERROR
+    {"MAC_SETUP_ERROR", ERR_LIB_PKCS12, PKCS12_R_MAC_SETUP_ERROR},
+  #else
+    {"MAC_SETUP_ERROR", 35, 110},
+  #endif
+  #ifdef PKCS12_R_MAC_STRING_SET_ERROR
+    {"MAC_STRING_SET_ERROR", ERR_LIB_PKCS12, PKCS12_R_MAC_STRING_SET_ERROR},
+  #else
+    {"MAC_STRING_SET_ERROR", 35, 111},
+  #endif
+  #ifdef PKCS12_R_MAC_VERIFY_FAILURE
+    {"MAC_VERIFY_FAILURE", ERR_LIB_PKCS12, PKCS12_R_MAC_VERIFY_FAILURE},
+  #else
+    {"MAC_VERIFY_FAILURE", 35, 113},
+  #endif
+  #ifdef PKCS12_R_PARSE_ERROR
+    {"PARSE_ERROR", ERR_LIB_PKCS12, PKCS12_R_PARSE_ERROR},
+  #else
+    {"PARSE_ERROR", 35, 114},
+  #endif
+  #ifdef PKCS12_R_PKCS12_CIPHERFINAL_ERROR
+    {"PKCS12_CIPHERFINAL_ERROR", ERR_LIB_PKCS12, PKCS12_R_PKCS12_CIPHERFINAL_ERROR},
+  #else
+    {"PKCS12_CIPHERFINAL_ERROR", 35, 116},
+  #endif
+  #ifdef PKCS12_R_UNKNOWN_DIGEST_ALGORITHM
+    {"UNKNOWN_DIGEST_ALGORITHM", ERR_LIB_PKCS12, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM},
+  #else
+    {"UNKNOWN_DIGEST_ALGORITHM", 35, 118},
+  #endif
+  #ifdef PKCS12_R_UNSUPPORTED_PKCS12_MODE
+    {"UNSUPPORTED_PKCS12_MODE", ERR_LIB_PKCS12, PKCS12_R_UNSUPPORTED_PKCS12_MODE},
+  #else
+    {"UNSUPPORTED_PKCS12_MODE", 35, 119},
+  #endif
+  #ifdef PKCS7_R_CERTIFICATE_VERIFY_ERROR
+    {"CERTIFICATE_VERIFY_ERROR", ERR_LIB_PKCS7, PKCS7_R_CERTIFICATE_VERIFY_ERROR},
+  #else
+    {"CERTIFICATE_VERIFY_ERROR", 33, 117},
+  #endif
+  #ifdef PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER
+    {"CIPHER_HAS_NO_OBJECT_IDENTIFIER", ERR_LIB_PKCS7, PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER},
+  #else
+    {"CIPHER_HAS_NO_OBJECT_IDENTIFIER", 33, 144},
+  #endif
+  #ifdef PKCS7_R_CIPHER_NOT_INITIALIZED
+    {"CIPHER_NOT_INITIALIZED", ERR_LIB_PKCS7, PKCS7_R_CIPHER_NOT_INITIALIZED},
+  #else
+    {"CIPHER_NOT_INITIALIZED", 33, 116},
+  #endif
+  #ifdef PKCS7_R_CONTENT_AND_DATA_PRESENT
+    {"CONTENT_AND_DATA_PRESENT", ERR_LIB_PKCS7, PKCS7_R_CONTENT_AND_DATA_PRESENT},
+  #else
+    {"CONTENT_AND_DATA_PRESENT", 33, 118},
+  #endif
+  #ifdef PKCS7_R_CTRL_ERROR
+    {"CTRL_ERROR", ERR_LIB_PKCS7, PKCS7_R_CTRL_ERROR},
+  #else
+    {"CTRL_ERROR", 33, 152},
+  #endif
+  #ifdef PKCS7_R_DECRYPT_ERROR
+    {"DECRYPT_ERROR", ERR_LIB_PKCS7, PKCS7_R_DECRYPT_ERROR},
+  #else
+    {"DECRYPT_ERROR", 33, 119},
+  #endif
+  #ifdef PKCS7_R_DIGEST_FAILURE
+    {"DIGEST_FAILURE", ERR_LIB_PKCS7, PKCS7_R_DIGEST_FAILURE},
+  #else
+    {"DIGEST_FAILURE", 33, 101},
+  #endif
+  #ifdef PKCS7_R_ENCRYPTION_CTRL_FAILURE
+    {"ENCRYPTION_CTRL_FAILURE", ERR_LIB_PKCS7, PKCS7_R_ENCRYPTION_CTRL_FAILURE},
+  #else
+    {"ENCRYPTION_CTRL_FAILURE", 33, 149},
+  #endif
+  #ifdef PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
+    {"ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE", ERR_LIB_PKCS7, PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE},
+  #else
+    {"ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE", 33, 150},
+  #endif
+  #ifdef PKCS7_R_ERROR_ADDING_RECIPIENT
+    {"ERROR_ADDING_RECIPIENT", ERR_LIB_PKCS7, PKCS7_R_ERROR_ADDING_RECIPIENT},
+  #else
+    {"ERROR_ADDING_RECIPIENT", 33, 120},
+  #endif
+  #ifdef PKCS7_R_ERROR_SETTING_CIPHER
+    {"ERROR_SETTING_CIPHER", ERR_LIB_PKCS7, PKCS7_R_ERROR_SETTING_CIPHER},
+  #else
+    {"ERROR_SETTING_CIPHER", 33, 121},
+  #endif
+  #ifdef PKCS7_R_INVALID_NULL_POINTER
+    {"INVALID_NULL_POINTER", ERR_LIB_PKCS7, PKCS7_R_INVALID_NULL_POINTER},
+  #else
+    {"INVALID_NULL_POINTER", 33, 143},
+  #endif
+  #ifdef PKCS7_R_INVALID_SIGNED_DATA_TYPE
+    {"INVALID_SIGNED_DATA_TYPE", ERR_LIB_PKCS7, PKCS7_R_INVALID_SIGNED_DATA_TYPE},
+  #else
+    {"INVALID_SIGNED_DATA_TYPE", 33, 155},
+  #endif
+  #ifdef PKCS7_R_NO_CONTENT
+    {"NO_CONTENT", ERR_LIB_PKCS7, PKCS7_R_NO_CONTENT},
+  #else
+    {"NO_CONTENT", 33, 122},
+  #endif
+  #ifdef PKCS7_R_NO_DEFAULT_DIGEST
+    {"NO_DEFAULT_DIGEST", ERR_LIB_PKCS7, PKCS7_R_NO_DEFAULT_DIGEST},
+  #else
+    {"NO_DEFAULT_DIGEST", 33, 151},
+  #endif
+  #ifdef PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND
+    {"NO_MATCHING_DIGEST_TYPE_FOUND", ERR_LIB_PKCS7, PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND},
+  #else
+    {"NO_MATCHING_DIGEST_TYPE_FOUND", 33, 154},
+  #endif
+  #ifdef PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE
+    {"NO_RECIPIENT_MATCHES_CERTIFICATE", ERR_LIB_PKCS7, PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE},
+  #else
+    {"NO_RECIPIENT_MATCHES_CERTIFICATE", 33, 115},
+  #endif
+  #ifdef PKCS7_R_NO_SIGNATURES_ON_DATA
+    {"NO_SIGNATURES_ON_DATA", ERR_LIB_PKCS7, PKCS7_R_NO_SIGNATURES_ON_DATA},
+  #else
+    {"NO_SIGNATURES_ON_DATA", 33, 123},
+  #endif
+  #ifdef PKCS7_R_NO_SIGNERS
+    {"NO_SIGNERS", ERR_LIB_PKCS7, PKCS7_R_NO_SIGNERS},
+  #else
+    {"NO_SIGNERS", 33, 142},
+  #endif
+  #ifdef PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE
+    {"OPERATION_NOT_SUPPORTED_ON_THIS_TYPE", ERR_LIB_PKCS7, PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE},
+  #else
+    {"OPERATION_NOT_SUPPORTED_ON_THIS_TYPE", 33, 104},
+  #endif
+  #ifdef PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR
+    {"PKCS7_ADD_SIGNATURE_ERROR", ERR_LIB_PKCS7, PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR},
+  #else
+    {"PKCS7_ADD_SIGNATURE_ERROR", 33, 124},
+  #endif
+  #ifdef PKCS7_R_PKCS7_ADD_SIGNER_ERROR
+    {"PKCS7_ADD_SIGNER_ERROR", ERR_LIB_PKCS7, PKCS7_R_PKCS7_ADD_SIGNER_ERROR},
+  #else
+    {"PKCS7_ADD_SIGNER_ERROR", 33, 153},
+  #endif
+  #ifdef PKCS7_R_PKCS7_DATASIGN
+    {"PKCS7_DATASIGN", ERR_LIB_PKCS7, PKCS7_R_PKCS7_DATASIGN},
+  #else
+    {"PKCS7_DATASIGN", 33, 145},
+  #endif
+  #ifdef PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", ERR_LIB_PKCS7, PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE},
+  #else
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", 33, 127},
+  #endif
+  #ifdef PKCS7_R_SIGNATURE_FAILURE
+    {"SIGNATURE_FAILURE", ERR_LIB_PKCS7, PKCS7_R_SIGNATURE_FAILURE},
+  #else
+    {"SIGNATURE_FAILURE", 33, 105},
+  #endif
+  #ifdef PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND
+    {"SIGNER_CERTIFICATE_NOT_FOUND", ERR_LIB_PKCS7, PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND},
+  #else
+    {"SIGNER_CERTIFICATE_NOT_FOUND", 33, 128},
+  #endif
+  #ifdef PKCS7_R_SIGNING_CTRL_FAILURE
+    {"SIGNING_CTRL_FAILURE", ERR_LIB_PKCS7, PKCS7_R_SIGNING_CTRL_FAILURE},
+  #else
+    {"SIGNING_CTRL_FAILURE", 33, 147},
+  #endif
+  #ifdef PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
+    {"SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE", ERR_LIB_PKCS7, PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE},
+  #else
+    {"SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE", 33, 148},
+  #endif
+  #ifdef PKCS7_R_SMIME_TEXT_ERROR
+    {"SMIME_TEXT_ERROR", ERR_LIB_PKCS7, PKCS7_R_SMIME_TEXT_ERROR},
+  #else
+    {"SMIME_TEXT_ERROR", 33, 129},
+  #endif
+  #ifdef PKCS7_R_UNABLE_TO_FIND_CERTIFICATE
+    {"UNABLE_TO_FIND_CERTIFICATE", ERR_LIB_PKCS7, PKCS7_R_UNABLE_TO_FIND_CERTIFICATE},
+  #else
+    {"UNABLE_TO_FIND_CERTIFICATE", 33, 106},
+  #endif
+  #ifdef PKCS7_R_UNABLE_TO_FIND_MEM_BIO
+    {"UNABLE_TO_FIND_MEM_BIO", ERR_LIB_PKCS7, PKCS7_R_UNABLE_TO_FIND_MEM_BIO},
+  #else
+    {"UNABLE_TO_FIND_MEM_BIO", 33, 107},
+  #endif
+  #ifdef PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST
+    {"UNABLE_TO_FIND_MESSAGE_DIGEST", ERR_LIB_PKCS7, PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST},
+  #else
+    {"UNABLE_TO_FIND_MESSAGE_DIGEST", 33, 108},
+  #endif
+  #ifdef PKCS7_R_UNKNOWN_DIGEST_TYPE
+    {"UNKNOWN_DIGEST_TYPE", ERR_LIB_PKCS7, PKCS7_R_UNKNOWN_DIGEST_TYPE},
+  #else
+    {"UNKNOWN_DIGEST_TYPE", 33, 109},
+  #endif
+  #ifdef PKCS7_R_UNKNOWN_OPERATION
+    {"UNKNOWN_OPERATION", ERR_LIB_PKCS7, PKCS7_R_UNKNOWN_OPERATION},
+  #else
+    {"UNKNOWN_OPERATION", 33, 110},
+  #endif
+  #ifdef PKCS7_R_UNSUPPORTED_CIPHER_TYPE
+    {"UNSUPPORTED_CIPHER_TYPE", ERR_LIB_PKCS7, PKCS7_R_UNSUPPORTED_CIPHER_TYPE},
+  #else
+    {"UNSUPPORTED_CIPHER_TYPE", 33, 111},
+  #endif
+  #ifdef PKCS7_R_UNSUPPORTED_CONTENT_TYPE
+    {"UNSUPPORTED_CONTENT_TYPE", ERR_LIB_PKCS7, PKCS7_R_UNSUPPORTED_CONTENT_TYPE},
+  #else
+    {"UNSUPPORTED_CONTENT_TYPE", 33, 112},
+  #endif
+  #ifdef PKCS7_R_WRONG_CONTENT_TYPE
+    {"WRONG_CONTENT_TYPE", ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE},
+  #else
+    {"WRONG_CONTENT_TYPE", 33, 113},
+  #endif
+  #ifdef PKCS7_R_WRONG_PKCS7_TYPE
+    {"WRONG_PKCS7_TYPE", ERR_LIB_PKCS7, PKCS7_R_WRONG_PKCS7_TYPE},
+  #else
+    {"WRONG_PKCS7_TYPE", 33, 114},
+  #endif
+  #ifdef PROP_R_NAME_TOO_LONG
+    {"NAME_TOO_LONG", ERR_LIB_PROP, PROP_R_NAME_TOO_LONG},
+  #else
+    {"NAME_TOO_LONG", 55, 100},
+  #endif
+  #ifdef PROP_R_NOT_AN_ASCII_CHARACTER
+    {"NOT_AN_ASCII_CHARACTER", ERR_LIB_PROP, PROP_R_NOT_AN_ASCII_CHARACTER},
+  #else
+    {"NOT_AN_ASCII_CHARACTER", 55, 101},
+  #endif
+  #ifdef PROP_R_NOT_AN_HEXADECIMAL_DIGIT
+    {"NOT_AN_HEXADECIMAL_DIGIT", ERR_LIB_PROP, PROP_R_NOT_AN_HEXADECIMAL_DIGIT},
+  #else
+    {"NOT_AN_HEXADECIMAL_DIGIT", 55, 102},
+  #endif
+  #ifdef PROP_R_NOT_AN_IDENTIFIER
+    {"NOT_AN_IDENTIFIER", ERR_LIB_PROP, PROP_R_NOT_AN_IDENTIFIER},
+  #else
+    {"NOT_AN_IDENTIFIER", 55, 103},
+  #endif
+  #ifdef PROP_R_NOT_AN_OCTAL_DIGIT
+    {"NOT_AN_OCTAL_DIGIT", ERR_LIB_PROP, PROP_R_NOT_AN_OCTAL_DIGIT},
+  #else
+    {"NOT_AN_OCTAL_DIGIT", 55, 104},
+  #endif
+  #ifdef PROP_R_NOT_A_DECIMAL_DIGIT
+    {"NOT_A_DECIMAL_DIGIT", ERR_LIB_PROP, PROP_R_NOT_A_DECIMAL_DIGIT},
+  #else
+    {"NOT_A_DECIMAL_DIGIT", 55, 105},
+  #endif
+  #ifdef PROP_R_NO_MATCHING_STRING_DELIMITER
+    {"NO_MATCHING_STRING_DELIMITER", ERR_LIB_PROP, PROP_R_NO_MATCHING_STRING_DELIMITER},
+  #else
+    {"NO_MATCHING_STRING_DELIMITER", 55, 106},
+  #endif
+  #ifdef PROP_R_NO_VALUE
+    {"NO_VALUE", ERR_LIB_PROP, PROP_R_NO_VALUE},
+  #else
+    {"NO_VALUE", 55, 107},
+  #endif
+  #ifdef PROP_R_PARSE_FAILED
+    {"PARSE_FAILED", ERR_LIB_PROP, PROP_R_PARSE_FAILED},
+  #else
+    {"PARSE_FAILED", 55, 108},
+  #endif
+  #ifdef PROP_R_STRING_TOO_LONG
+    {"STRING_TOO_LONG", ERR_LIB_PROP, PROP_R_STRING_TOO_LONG},
+  #else
+    {"STRING_TOO_LONG", 55, 109},
+  #endif
+  #ifdef PROP_R_TRAILING_CHARACTERS
+    {"TRAILING_CHARACTERS", ERR_LIB_PROP, PROP_R_TRAILING_CHARACTERS},
+  #else
+    {"TRAILING_CHARACTERS", 55, 110},
+  #endif
+  #ifdef PROV_R_ADDITIONAL_INPUT_TOO_LONG
+    {"ADDITIONAL_INPUT_TOO_LONG", ERR_LIB_PROV, PROV_R_ADDITIONAL_INPUT_TOO_LONG},
+  #else
+    {"ADDITIONAL_INPUT_TOO_LONG", 57, 184},
+  #endif
+  #ifdef PROV_R_ALGORITHM_MISMATCH
+    {"ALGORITHM_MISMATCH", ERR_LIB_PROV, PROV_R_ALGORITHM_MISMATCH},
+  #else
+    {"ALGORITHM_MISMATCH", 57, 173},
+  #endif
+  #ifdef PROV_R_ALREADY_INSTANTIATED
+    {"ALREADY_INSTANTIATED", ERR_LIB_PROV, PROV_R_ALREADY_INSTANTIATED},
+  #else
+    {"ALREADY_INSTANTIATED", 57, 185},
+  #endif
+  #ifdef PROV_R_BAD_DECRYPT
+    {"BAD_DECRYPT", ERR_LIB_PROV, PROV_R_BAD_DECRYPT},
+  #else
+    {"BAD_DECRYPT", 57, 100},
+  #endif
+  #ifdef PROV_R_BAD_ENCODING
+    {"BAD_ENCODING", ERR_LIB_PROV, PROV_R_BAD_ENCODING},
+  #else
+    {"BAD_ENCODING", 57, 141},
+  #endif
+  #ifdef PROV_R_BAD_LENGTH
+    {"BAD_LENGTH", ERR_LIB_PROV, PROV_R_BAD_LENGTH},
+  #else
+    {"BAD_LENGTH", 57, 142},
+  #endif
+  #ifdef PROV_R_BAD_TLS_CLIENT_VERSION
+    {"BAD_TLS_CLIENT_VERSION", ERR_LIB_PROV, PROV_R_BAD_TLS_CLIENT_VERSION},
+  #else
+    {"BAD_TLS_CLIENT_VERSION", 57, 161},
+  #endif
+  #ifdef PROV_R_BN_ERROR
+    {"BN_ERROR", ERR_LIB_PROV, PROV_R_BN_ERROR},
+  #else
+    {"BN_ERROR", 57, 160},
+  #endif
+  #ifdef PROV_R_CIPHER_OPERATION_FAILED
+    {"CIPHER_OPERATION_FAILED", ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED},
+  #else
+    {"CIPHER_OPERATION_FAILED", 57, 102},
+  #endif
+  #ifdef PROV_R_DERIVATION_FUNCTION_INIT_FAILED
+    {"DERIVATION_FUNCTION_INIT_FAILED", ERR_LIB_PROV, PROV_R_DERIVATION_FUNCTION_INIT_FAILED},
+  #else
+    {"DERIVATION_FUNCTION_INIT_FAILED", 57, 205},
+  #endif
+  #ifdef PROV_R_DIGEST_NOT_ALLOWED
+    {"DIGEST_NOT_ALLOWED", ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED},
+  #else
+    {"DIGEST_NOT_ALLOWED", 57, 174},
+  #endif
+  #ifdef PROV_R_EMS_NOT_ENABLED
+    {"EMS_NOT_ENABLED", ERR_LIB_PROV, PROV_R_EMS_NOT_ENABLED},
+  #else
+    {"EMS_NOT_ENABLED", 57, 233},
+  #endif
+  #ifdef PROV_R_ENTROPY_SOURCE_STRENGTH_TOO_WEAK
+    {"ENTROPY_SOURCE_STRENGTH_TOO_WEAK", ERR_LIB_PROV, PROV_R_ENTROPY_SOURCE_STRENGTH_TOO_WEAK},
+  #else
+    {"ENTROPY_SOURCE_STRENGTH_TOO_WEAK", 57, 186},
+  #endif
+  #ifdef PROV_R_ERROR_INSTANTIATING_DRBG
+    {"ERROR_INSTANTIATING_DRBG", ERR_LIB_PROV, PROV_R_ERROR_INSTANTIATING_DRBG},
+  #else
+    {"ERROR_INSTANTIATING_DRBG", 57, 188},
+  #endif
+  #ifdef PROV_R_ERROR_RETRIEVING_ENTROPY
+    {"ERROR_RETRIEVING_ENTROPY", ERR_LIB_PROV, PROV_R_ERROR_RETRIEVING_ENTROPY},
+  #else
+    {"ERROR_RETRIEVING_ENTROPY", 57, 189},
+  #endif
+  #ifdef PROV_R_ERROR_RETRIEVING_NONCE
+    {"ERROR_RETRIEVING_NONCE", ERR_LIB_PROV, PROV_R_ERROR_RETRIEVING_NONCE},
+  #else
+    {"ERROR_RETRIEVING_NONCE", 57, 190},
+  #endif
+  #ifdef PROV_R_FAILED_DURING_DERIVATION
+    {"FAILED_DURING_DERIVATION", ERR_LIB_PROV, PROV_R_FAILED_DURING_DERIVATION},
+  #else
+    {"FAILED_DURING_DERIVATION", 57, 164},
+  #endif
+  #ifdef PROV_R_FAILED_TO_CREATE_LOCK
+    {"FAILED_TO_CREATE_LOCK", ERR_LIB_PROV, PROV_R_FAILED_TO_CREATE_LOCK},
+  #else
+    {"FAILED_TO_CREATE_LOCK", 57, 180},
+  #endif
+  #ifdef PROV_R_FAILED_TO_DECRYPT
+    {"FAILED_TO_DECRYPT", ERR_LIB_PROV, PROV_R_FAILED_TO_DECRYPT},
+  #else
+    {"FAILED_TO_DECRYPT", 57, 162},
+  #endif
+  #ifdef PROV_R_FAILED_TO_GENERATE_KEY
+    {"FAILED_TO_GENERATE_KEY", ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY},
+  #else
+    {"FAILED_TO_GENERATE_KEY", 57, 121},
+  #endif
+  #ifdef PROV_R_FAILED_TO_GET_PARAMETER
+    {"FAILED_TO_GET_PARAMETER", ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER},
+  #else
+    {"FAILED_TO_GET_PARAMETER", 57, 103},
+  #endif
+  #ifdef PROV_R_FAILED_TO_SET_PARAMETER
+    {"FAILED_TO_SET_PARAMETER", ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER},
+  #else
+    {"FAILED_TO_SET_PARAMETER", 57, 104},
+  #endif
+  #ifdef PROV_R_FAILED_TO_SIGN
+    {"FAILED_TO_SIGN", ERR_LIB_PROV, PROV_R_FAILED_TO_SIGN},
+  #else
+    {"FAILED_TO_SIGN", 57, 175},
+  #endif
+  #ifdef PROV_R_FIPS_MODULE_CONDITIONAL_ERROR
+    {"FIPS_MODULE_CONDITIONAL_ERROR", ERR_LIB_PROV, PROV_R_FIPS_MODULE_CONDITIONAL_ERROR},
+  #else
+    {"FIPS_MODULE_CONDITIONAL_ERROR", 57, 227},
+  #endif
+  #ifdef PROV_R_FIPS_MODULE_ENTERING_ERROR_STATE
+    {"FIPS_MODULE_ENTERING_ERROR_STATE", ERR_LIB_PROV, PROV_R_FIPS_MODULE_ENTERING_ERROR_STATE},
+  #else
+    {"FIPS_MODULE_ENTERING_ERROR_STATE", 57, 224},
+  #endif
+  #ifdef PROV_R_FIPS_MODULE_IN_ERROR_STATE
+    {"FIPS_MODULE_IN_ERROR_STATE", ERR_LIB_PROV, PROV_R_FIPS_MODULE_IN_ERROR_STATE},
+  #else
+    {"FIPS_MODULE_IN_ERROR_STATE", 57, 225},
+  #endif
+  #ifdef PROV_R_GENERATE_ERROR
+    {"GENERATE_ERROR", ERR_LIB_PROV, PROV_R_GENERATE_ERROR},
+  #else
+    {"GENERATE_ERROR", 57, 191},
+  #endif
+  #ifdef PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE
+    {"ILLEGAL_OR_UNSUPPORTED_PADDING_MODE", ERR_LIB_PROV, PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE},
+  #else
+    {"ILLEGAL_OR_UNSUPPORTED_PADDING_MODE", 57, 165},
+  #endif
+  #ifdef PROV_R_INDICATOR_INTEGRITY_FAILURE
+    {"INDICATOR_INTEGRITY_FAILURE", ERR_LIB_PROV, PROV_R_INDICATOR_INTEGRITY_FAILURE},
+  #else
+    {"INDICATOR_INTEGRITY_FAILURE", 57, 210},
+  #endif
+  #ifdef PROV_R_INSUFFICIENT_DRBG_STRENGTH
+    {"INSUFFICIENT_DRBG_STRENGTH", ERR_LIB_PROV, PROV_R_INSUFFICIENT_DRBG_STRENGTH},
+  #else
+    {"INSUFFICIENT_DRBG_STRENGTH", 57, 181},
+  #endif
+  #ifdef PROV_R_INVALID_AAD
+    {"INVALID_AAD", ERR_LIB_PROV, PROV_R_INVALID_AAD},
+  #else
+    {"INVALID_AAD", 57, 108},
+  #endif
+  #ifdef PROV_R_INVALID_CONFIG_DATA
+    {"INVALID_CONFIG_DATA", ERR_LIB_PROV, PROV_R_INVALID_CONFIG_DATA},
+  #else
+    {"INVALID_CONFIG_DATA", 57, 211},
+  #endif
+  #ifdef PROV_R_INVALID_CONSTANT_LENGTH
+    {"INVALID_CONSTANT_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_CONSTANT_LENGTH},
+  #else
+    {"INVALID_CONSTANT_LENGTH", 57, 157},
+  #endif
+  #ifdef PROV_R_INVALID_CURVE
+    {"INVALID_CURVE", ERR_LIB_PROV, PROV_R_INVALID_CURVE},
+  #else
+    {"INVALID_CURVE", 57, 176},
+  #endif
+  #ifdef PROV_R_INVALID_CUSTOM_LENGTH
+    {"INVALID_CUSTOM_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_CUSTOM_LENGTH},
+  #else
+    {"INVALID_CUSTOM_LENGTH", 57, 111},
+  #endif
+  #ifdef PROV_R_INVALID_DATA
+    {"INVALID_DATA", ERR_LIB_PROV, PROV_R_INVALID_DATA},
+  #else
+    {"INVALID_DATA", 57, 115},
+  #endif
+  #ifdef PROV_R_INVALID_DIGEST
+    {"INVALID_DIGEST", ERR_LIB_PROV, PROV_R_INVALID_DIGEST},
+  #else
+    {"INVALID_DIGEST", 57, 122},
+  #endif
+  #ifdef PROV_R_INVALID_DIGEST_LENGTH
+    {"INVALID_DIGEST_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH},
+  #else
+    {"INVALID_DIGEST_LENGTH", 57, 166},
+  #endif
+  #ifdef PROV_R_INVALID_DIGEST_SIZE
+    {"INVALID_DIGEST_SIZE", ERR_LIB_PROV, PROV_R_INVALID_DIGEST_SIZE},
+  #else
+    {"INVALID_DIGEST_SIZE", 57, 218},
+  #endif
+  #ifdef PROV_R_INVALID_INPUT_LENGTH
+    {"INVALID_INPUT_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_INPUT_LENGTH},
+  #else
+    {"INVALID_INPUT_LENGTH", 57, 230},
+  #endif
+  #ifdef PROV_R_INVALID_ITERATION_COUNT
+    {"INVALID_ITERATION_COUNT", ERR_LIB_PROV, PROV_R_INVALID_ITERATION_COUNT},
+  #else
+    {"INVALID_ITERATION_COUNT", 57, 123},
+  #endif
+  #ifdef PROV_R_INVALID_IV_LENGTH
+    {"INVALID_IV_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH},
+  #else
+    {"INVALID_IV_LENGTH", 57, 109},
+  #endif
+  #ifdef PROV_R_INVALID_KEY
+    {"INVALID_KEY", ERR_LIB_PROV, PROV_R_INVALID_KEY},
+  #else
+    {"INVALID_KEY", 57, 158},
+  #endif
+  #ifdef PROV_R_INVALID_KEY_LENGTH
+    {"INVALID_KEY_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH},
+  #else
+    {"INVALID_KEY_LENGTH", 57, 105},
+  #endif
+  #ifdef PROV_R_INVALID_MAC
+    {"INVALID_MAC", ERR_LIB_PROV, PROV_R_INVALID_MAC},
+  #else
+    {"INVALID_MAC", 57, 151},
+  #endif
+  #ifdef PROV_R_INVALID_MGF1_MD
+    {"INVALID_MGF1_MD", ERR_LIB_PROV, PROV_R_INVALID_MGF1_MD},
+  #else
+    {"INVALID_MGF1_MD", 57, 167},
+  #endif
+  #ifdef PROV_R_INVALID_MODE
+    {"INVALID_MODE", ERR_LIB_PROV, PROV_R_INVALID_MODE},
+  #else
+    {"INVALID_MODE", 57, 125},
+  #endif
+  #ifdef PROV_R_INVALID_OUTPUT_LENGTH
+    {"INVALID_OUTPUT_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_OUTPUT_LENGTH},
+  #else
+    {"INVALID_OUTPUT_LENGTH", 57, 217},
+  #endif
+  #ifdef PROV_R_INVALID_PADDING_MODE
+    {"INVALID_PADDING_MODE", ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE},
+  #else
+    {"INVALID_PADDING_MODE", 57, 168},
+  #endif
+  #ifdef PROV_R_INVALID_PUBINFO
+    {"INVALID_PUBINFO", ERR_LIB_PROV, PROV_R_INVALID_PUBINFO},
+  #else
+    {"INVALID_PUBINFO", 57, 198},
+  #endif
+  #ifdef PROV_R_INVALID_SALT_LENGTH
+    {"INVALID_SALT_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH},
+  #else
+    {"INVALID_SALT_LENGTH", 57, 112},
+  #endif
+  #ifdef PROV_R_INVALID_SEED_LENGTH
+    {"INVALID_SEED_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_SEED_LENGTH},
+  #else
+    {"INVALID_SEED_LENGTH", 57, 154},
+  #endif
+  #ifdef PROV_R_INVALID_SIGNATURE_SIZE
+    {"INVALID_SIGNATURE_SIZE", ERR_LIB_PROV, PROV_R_INVALID_SIGNATURE_SIZE},
+  #else
+    {"INVALID_SIGNATURE_SIZE", 57, 179},
+  #endif
+  #ifdef PROV_R_INVALID_STATE
+    {"INVALID_STATE", ERR_LIB_PROV, PROV_R_INVALID_STATE},
+  #else
+    {"INVALID_STATE", 57, 212},
+  #endif
+  #ifdef PROV_R_INVALID_TAG
+    {"INVALID_TAG", ERR_LIB_PROV, PROV_R_INVALID_TAG},
+  #else
+    {"INVALID_TAG", 57, 110},
+  #endif
+  #ifdef PROV_R_INVALID_TAG_LENGTH
+    {"INVALID_TAG_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH},
+  #else
+    {"INVALID_TAG_LENGTH", 57, 118},
+  #endif
+  #ifdef PROV_R_INVALID_UKM_LENGTH
+    {"INVALID_UKM_LENGTH", ERR_LIB_PROV, PROV_R_INVALID_UKM_LENGTH},
+  #else
+    {"INVALID_UKM_LENGTH", 57, 200},
+  #endif
+  #ifdef PROV_R_INVALID_X931_DIGEST
+    {"INVALID_X931_DIGEST", ERR_LIB_PROV, PROV_R_INVALID_X931_DIGEST},
+  #else
+    {"INVALID_X931_DIGEST", 57, 170},
+  #endif
+  #ifdef PROV_R_IN_ERROR_STATE
+    {"IN_ERROR_STATE", ERR_LIB_PROV, PROV_R_IN_ERROR_STATE},
+  #else
+    {"IN_ERROR_STATE", 57, 192},
+  #endif
+  #ifdef PROV_R_KEY_SETUP_FAILED
+    {"KEY_SETUP_FAILED", ERR_LIB_PROV, PROV_R_KEY_SETUP_FAILED},
+  #else
+    {"KEY_SETUP_FAILED", 57, 101},
+  #endif
+  #ifdef PROV_R_KEY_SIZE_TOO_SMALL
+    {"KEY_SIZE_TOO_SMALL", ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL},
+  #else
+    {"KEY_SIZE_TOO_SMALL", 57, 171},
+  #endif
+  #ifdef PROV_R_LENGTH_TOO_LARGE
+    {"LENGTH_TOO_LARGE", ERR_LIB_PROV, PROV_R_LENGTH_TOO_LARGE},
+  #else
+    {"LENGTH_TOO_LARGE", 57, 202},
+  #endif
+  #ifdef PROV_R_MISMATCHING_DOMAIN_PARAMETERS
+    {"MISMATCHING_DOMAIN_PARAMETERS", ERR_LIB_PROV, PROV_R_MISMATCHING_DOMAIN_PARAMETERS},
+  #else
+    {"MISMATCHING_DOMAIN_PARAMETERS", 57, 203},
+  #endif
+  #ifdef PROV_R_MISSING_CEK_ALG
+    {"MISSING_CEK_ALG", ERR_LIB_PROV, PROV_R_MISSING_CEK_ALG},
+  #else
+    {"MISSING_CEK_ALG", 57, 144},
+  #endif
+  #ifdef PROV_R_MISSING_CIPHER
+    {"MISSING_CIPHER", ERR_LIB_PROV, PROV_R_MISSING_CIPHER},
+  #else
+    {"MISSING_CIPHER", 57, 155},
+  #endif
+  #ifdef PROV_R_MISSING_CONFIG_DATA
+    {"MISSING_CONFIG_DATA", ERR_LIB_PROV, PROV_R_MISSING_CONFIG_DATA},
+  #else
+    {"MISSING_CONFIG_DATA", 57, 213},
+  #endif
+  #ifdef PROV_R_MISSING_CONSTANT
+    {"MISSING_CONSTANT", ERR_LIB_PROV, PROV_R_MISSING_CONSTANT},
+  #else
+    {"MISSING_CONSTANT", 57, 156},
+  #endif
+  #ifdef PROV_R_MISSING_KEY
+    {"MISSING_KEY", ERR_LIB_PROV, PROV_R_MISSING_KEY},
+  #else
+    {"MISSING_KEY", 57, 128},
+  #endif
+  #ifdef PROV_R_MISSING_MAC
+    {"MISSING_MAC", ERR_LIB_PROV, PROV_R_MISSING_MAC},
+  #else
+    {"MISSING_MAC", 57, 150},
+  #endif
+  #ifdef PROV_R_MISSING_MESSAGE_DIGEST
+    {"MISSING_MESSAGE_DIGEST", ERR_LIB_PROV, PROV_R_MISSING_MESSAGE_DIGEST},
+  #else
+    {"MISSING_MESSAGE_DIGEST", 57, 129},
+  #endif
+  #ifdef PROV_R_MISSING_OID
+    {"MISSING_OID", ERR_LIB_PROV, PROV_R_MISSING_OID},
+  #else
+    {"MISSING_OID", 57, 209},
+  #endif
+  #ifdef PROV_R_MISSING_PASS
+    {"MISSING_PASS", ERR_LIB_PROV, PROV_R_MISSING_PASS},
+  #else
+    {"MISSING_PASS", 57, 130},
+  #endif
+  #ifdef PROV_R_MISSING_SALT
+    {"MISSING_SALT", ERR_LIB_PROV, PROV_R_MISSING_SALT},
+  #else
+    {"MISSING_SALT", 57, 131},
+  #endif
+  #ifdef PROV_R_MISSING_SECRET
+    {"MISSING_SECRET", ERR_LIB_PROV, PROV_R_MISSING_SECRET},
+  #else
+    {"MISSING_SECRET", 57, 132},
+  #endif
+  #ifdef PROV_R_MISSING_SEED
+    {"MISSING_SEED", ERR_LIB_PROV, PROV_R_MISSING_SEED},
+  #else
+    {"MISSING_SEED", 57, 140},
+  #endif
+  #ifdef PROV_R_MISSING_SESSION_ID
+    {"MISSING_SESSION_ID", ERR_LIB_PROV, PROV_R_MISSING_SESSION_ID},
+  #else
+    {"MISSING_SESSION_ID", 57, 133},
+  #endif
+  #ifdef PROV_R_MISSING_TYPE
+    {"MISSING_TYPE", ERR_LIB_PROV, PROV_R_MISSING_TYPE},
+  #else
+    {"MISSING_TYPE", 57, 134},
+  #endif
+  #ifdef PROV_R_MISSING_XCGHASH
+    {"MISSING_XCGHASH", ERR_LIB_PROV, PROV_R_MISSING_XCGHASH},
+  #else
+    {"MISSING_XCGHASH", 57, 135},
+  #endif
+  #ifdef PROV_R_MODULE_INTEGRITY_FAILURE
+    {"MODULE_INTEGRITY_FAILURE", ERR_LIB_PROV, PROV_R_MODULE_INTEGRITY_FAILURE},
+  #else
+    {"MODULE_INTEGRITY_FAILURE", 57, 214},
+  #endif
+  #ifdef PROV_R_NOT_A_PRIVATE_KEY
+    {"NOT_A_PRIVATE_KEY", ERR_LIB_PROV, PROV_R_NOT_A_PRIVATE_KEY},
+  #else
+    {"NOT_A_PRIVATE_KEY", 57, 221},
+  #endif
+  #ifdef PROV_R_NOT_A_PUBLIC_KEY
+    {"NOT_A_PUBLIC_KEY", ERR_LIB_PROV, PROV_R_NOT_A_PUBLIC_KEY},
+  #else
+    {"NOT_A_PUBLIC_KEY", 57, 220},
+  #endif
+  #ifdef PROV_R_NOT_INSTANTIATED
+    {"NOT_INSTANTIATED", ERR_LIB_PROV, PROV_R_NOT_INSTANTIATED},
+  #else
+    {"NOT_INSTANTIATED", 57, 193},
+  #endif
+  #ifdef PROV_R_NOT_PARAMETERS
+    {"NOT_PARAMETERS", ERR_LIB_PROV, PROV_R_NOT_PARAMETERS},
+  #else
+    {"NOT_PARAMETERS", 57, 226},
+  #endif
+  #ifdef PROV_R_NOT_SUPPORTED
+    {"NOT_SUPPORTED", ERR_LIB_PROV, PROV_R_NOT_SUPPORTED},
+  #else
+    {"NOT_SUPPORTED", 57, 136},
+  #endif
+  #ifdef PROV_R_NOT_XOF_OR_INVALID_LENGTH
+    {"NOT_XOF_OR_INVALID_LENGTH", ERR_LIB_PROV, PROV_R_NOT_XOF_OR_INVALID_LENGTH},
+  #else
+    {"NOT_XOF_OR_INVALID_LENGTH", 57, 113},
+  #endif
+  #ifdef PROV_R_NO_KEY_SET
+    {"NO_KEY_SET", ERR_LIB_PROV, PROV_R_NO_KEY_SET},
+  #else
+    {"NO_KEY_SET", 57, 114},
+  #endif
+  #ifdef PROV_R_NO_PARAMETERS_SET
+    {"NO_PARAMETERS_SET", ERR_LIB_PROV, PROV_R_NO_PARAMETERS_SET},
+  #else
+    {"NO_PARAMETERS_SET", 57, 177},
+  #endif
+  #ifdef PROV_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE
+    {"OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE", ERR_LIB_PROV, PROV_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE},
+  #else
+    {"OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE", 57, 178},
+  #endif
+  #ifdef PROV_R_OUTPUT_BUFFER_TOO_SMALL
+    {"OUTPUT_BUFFER_TOO_SMALL", ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL},
+  #else
+    {"OUTPUT_BUFFER_TOO_SMALL", 57, 106},
+  #endif
+  #ifdef PROV_R_PARENT_CANNOT_GENERATE_RANDOM_NUMBERS
+    {"PARENT_CANNOT_GENERATE_RANDOM_NUMBERS", ERR_LIB_PROV, PROV_R_PARENT_CANNOT_GENERATE_RANDOM_NUMBERS},
+  #else
+    {"PARENT_CANNOT_GENERATE_RANDOM_NUMBERS", 57, 228},
+  #endif
+  #ifdef PROV_R_PARENT_CANNOT_SUPPLY_ENTROPY_SEED
+    {"PARENT_CANNOT_SUPPLY_ENTROPY_SEED", ERR_LIB_PROV, PROV_R_PARENT_CANNOT_SUPPLY_ENTROPY_SEED},
+  #else
+    {"PARENT_CANNOT_SUPPLY_ENTROPY_SEED", 57, 187},
+  #endif
+  #ifdef PROV_R_PARENT_LOCKING_NOT_ENABLED
+    {"PARENT_LOCKING_NOT_ENABLED", ERR_LIB_PROV, PROV_R_PARENT_LOCKING_NOT_ENABLED},
+  #else
+    {"PARENT_LOCKING_NOT_ENABLED", 57, 182},
+  #endif
+  #ifdef PROV_R_PARENT_STRENGTH_TOO_WEAK
+    {"PARENT_STRENGTH_TOO_WEAK", ERR_LIB_PROV, PROV_R_PARENT_STRENGTH_TOO_WEAK},
+  #else
+    {"PARENT_STRENGTH_TOO_WEAK", 57, 194},
+  #endif
+  #ifdef PROV_R_PATH_MUST_BE_ABSOLUTE
+    {"PATH_MUST_BE_ABSOLUTE", ERR_LIB_PROV, PROV_R_PATH_MUST_BE_ABSOLUTE},
+  #else
+    {"PATH_MUST_BE_ABSOLUTE", 57, 219},
+  #endif
+  #ifdef PROV_R_PERSONALISATION_STRING_TOO_LONG
+    {"PERSONALISATION_STRING_TOO_LONG", ERR_LIB_PROV, PROV_R_PERSONALISATION_STRING_TOO_LONG},
+  #else
+    {"PERSONALISATION_STRING_TOO_LONG", 57, 195},
+  #endif
+  #ifdef PROV_R_PSS_SALTLEN_TOO_SMALL
+    {"PSS_SALTLEN_TOO_SMALL", ERR_LIB_PROV, PROV_R_PSS_SALTLEN_TOO_SMALL},
+  #else
+    {"PSS_SALTLEN_TOO_SMALL", 57, 172},
+  #endif
+  #ifdef PROV_R_REQUEST_TOO_LARGE_FOR_DRBG
+    {"REQUEST_TOO_LARGE_FOR_DRBG", ERR_LIB_PROV, PROV_R_REQUEST_TOO_LARGE_FOR_DRBG},
+  #else
+    {"REQUEST_TOO_LARGE_FOR_DRBG", 57, 196},
+  #endif
+  #ifdef PROV_R_REQUIRE_CTR_MODE_CIPHER
+    {"REQUIRE_CTR_MODE_CIPHER", ERR_LIB_PROV, PROV_R_REQUIRE_CTR_MODE_CIPHER},
+  #else
+    {"REQUIRE_CTR_MODE_CIPHER", 57, 206},
+  #endif
+  #ifdef PROV_R_RESEED_ERROR
+    {"RESEED_ERROR", ERR_LIB_PROV, PROV_R_RESEED_ERROR},
+  #else
+    {"RESEED_ERROR", 57, 197},
+  #endif
+  #ifdef PROV_R_SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES
+    {"SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES", ERR_LIB_PROV, PROV_R_SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES},
+  #else
+    {"SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES", 57, 222},
+  #endif
+  #ifdef PROV_R_SEED_SOURCES_MUST_NOT_HAVE_A_PARENT
+    {"SEED_SOURCES_MUST_NOT_HAVE_A_PARENT", ERR_LIB_PROV, PROV_R_SEED_SOURCES_MUST_NOT_HAVE_A_PARENT},
+  #else
+    {"SEED_SOURCES_MUST_NOT_HAVE_A_PARENT", 57, 229},
+  #endif
+  #ifdef PROV_R_SELF_TEST_KAT_FAILURE
+    {"SELF_TEST_KAT_FAILURE", ERR_LIB_PROV, PROV_R_SELF_TEST_KAT_FAILURE},
+  #else
+    {"SELF_TEST_KAT_FAILURE", 57, 215},
+  #endif
+  #ifdef PROV_R_SELF_TEST_POST_FAILURE
+    {"SELF_TEST_POST_FAILURE", ERR_LIB_PROV, PROV_R_SELF_TEST_POST_FAILURE},
+  #else
+    {"SELF_TEST_POST_FAILURE", 57, 216},
+  #endif
+  #ifdef PROV_R_TAG_NOT_NEEDED
+    {"TAG_NOT_NEEDED", ERR_LIB_PROV, PROV_R_TAG_NOT_NEEDED},
+  #else
+    {"TAG_NOT_NEEDED", 57, 120},
+  #endif
+  #ifdef PROV_R_TAG_NOT_SET
+    {"TAG_NOT_SET", ERR_LIB_PROV, PROV_R_TAG_NOT_SET},
+  #else
+    {"TAG_NOT_SET", 57, 119},
+  #endif
+  #ifdef PROV_R_TOO_MANY_RECORDS
+    {"TOO_MANY_RECORDS", ERR_LIB_PROV, PROV_R_TOO_MANY_RECORDS},
+  #else
+    {"TOO_MANY_RECORDS", 57, 126},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_FIND_CIPHERS
+    {"UNABLE_TO_FIND_CIPHERS", ERR_LIB_PROV, PROV_R_UNABLE_TO_FIND_CIPHERS},
+  #else
+    {"UNABLE_TO_FIND_CIPHERS", 57, 207},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_GET_PARENT_STRENGTH
+    {"UNABLE_TO_GET_PARENT_STRENGTH", ERR_LIB_PROV, PROV_R_UNABLE_TO_GET_PARENT_STRENGTH},
+  #else
+    {"UNABLE_TO_GET_PARENT_STRENGTH", 57, 199},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_GET_PASSPHRASE
+    {"UNABLE_TO_GET_PASSPHRASE", ERR_LIB_PROV, PROV_R_UNABLE_TO_GET_PASSPHRASE},
+  #else
+    {"UNABLE_TO_GET_PASSPHRASE", 57, 159},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_INITIALISE_CIPHERS
+    {"UNABLE_TO_INITIALISE_CIPHERS", ERR_LIB_PROV, PROV_R_UNABLE_TO_INITIALISE_CIPHERS},
+  #else
+    {"UNABLE_TO_INITIALISE_CIPHERS", 57, 208},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_LOAD_SHA256
+    {"UNABLE_TO_LOAD_SHA256", ERR_LIB_PROV, PROV_R_UNABLE_TO_LOAD_SHA256},
+  #else
+    {"UNABLE_TO_LOAD_SHA256", 57, 147},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_LOCK_PARENT
+    {"UNABLE_TO_LOCK_PARENT", ERR_LIB_PROV, PROV_R_UNABLE_TO_LOCK_PARENT},
+  #else
+    {"UNABLE_TO_LOCK_PARENT", 57, 201},
+  #endif
+  #ifdef PROV_R_UNABLE_TO_RESEED
+    {"UNABLE_TO_RESEED", ERR_LIB_PROV, PROV_R_UNABLE_TO_RESEED},
+  #else
+    {"UNABLE_TO_RESEED", 57, 204},
+  #endif
+  #ifdef PROV_R_UNSUPPORTED_CEK_ALG
+    {"UNSUPPORTED_CEK_ALG", ERR_LIB_PROV, PROV_R_UNSUPPORTED_CEK_ALG},
+  #else
+    {"UNSUPPORTED_CEK_ALG", 57, 145},
+  #endif
+  #ifdef PROV_R_UNSUPPORTED_KEY_SIZE
+    {"UNSUPPORTED_KEY_SIZE", ERR_LIB_PROV, PROV_R_UNSUPPORTED_KEY_SIZE},
+  #else
+    {"UNSUPPORTED_KEY_SIZE", 57, 153},
+  #endif
+  #ifdef PROV_R_UNSUPPORTED_MAC_TYPE
+    {"UNSUPPORTED_MAC_TYPE", ERR_LIB_PROV, PROV_R_UNSUPPORTED_MAC_TYPE},
+  #else
+    {"UNSUPPORTED_MAC_TYPE", 57, 137},
+  #endif
+  #ifdef PROV_R_UNSUPPORTED_NUMBER_OF_ROUNDS
+    {"UNSUPPORTED_NUMBER_OF_ROUNDS", ERR_LIB_PROV, PROV_R_UNSUPPORTED_NUMBER_OF_ROUNDS},
+  #else
+    {"UNSUPPORTED_NUMBER_OF_ROUNDS", 57, 152},
+  #endif
+  #ifdef PROV_R_URI_AUTHORITY_UNSUPPORTED
+    {"URI_AUTHORITY_UNSUPPORTED", ERR_LIB_PROV, PROV_R_URI_AUTHORITY_UNSUPPORTED},
+  #else
+    {"URI_AUTHORITY_UNSUPPORTED", 57, 223},
+  #endif
+  #ifdef PROV_R_VALUE_ERROR
+    {"VALUE_ERROR", ERR_LIB_PROV, PROV_R_VALUE_ERROR},
+  #else
+    {"VALUE_ERROR", 57, 138},
+  #endif
+  #ifdef PROV_R_WRONG_FINAL_BLOCK_LENGTH
+    {"WRONG_FINAL_BLOCK_LENGTH", ERR_LIB_PROV, PROV_R_WRONG_FINAL_BLOCK_LENGTH},
+  #else
+    {"WRONG_FINAL_BLOCK_LENGTH", 57, 107},
+  #endif
+  #ifdef PROV_R_WRONG_OUTPUT_BUFFER_SIZE
+    {"WRONG_OUTPUT_BUFFER_SIZE", ERR_LIB_PROV, PROV_R_WRONG_OUTPUT_BUFFER_SIZE},
+  #else
+    {"WRONG_OUTPUT_BUFFER_SIZE", 57, 139},
+  #endif
+  #ifdef PROV_R_XOF_DIGESTS_NOT_ALLOWED
+    {"XOF_DIGESTS_NOT_ALLOWED", ERR_LIB_PROV, PROV_R_XOF_DIGESTS_NOT_ALLOWED},
+  #else
+    {"XOF_DIGESTS_NOT_ALLOWED", 57, 183},
+  #endif
+  #ifdef PROV_R_XTS_DATA_UNIT_IS_TOO_LARGE
+    {"XTS_DATA_UNIT_IS_TOO_LARGE", ERR_LIB_PROV, PROV_R_XTS_DATA_UNIT_IS_TOO_LARGE},
+  #else
+    {"XTS_DATA_UNIT_IS_TOO_LARGE", 57, 148},
+  #endif
+  #ifdef PROV_R_XTS_DUPLICATED_KEYS
+    {"XTS_DUPLICATED_KEYS", ERR_LIB_PROV, PROV_R_XTS_DUPLICATED_KEYS},
+  #else
+    {"XTS_DUPLICATED_KEYS", 57, 149},
+  #endif
+  #ifdef RAND_R_ADDITIONAL_INPUT_TOO_LONG
+    {"ADDITIONAL_INPUT_TOO_LONG", ERR_LIB_RAND, RAND_R_ADDITIONAL_INPUT_TOO_LONG},
+  #else
+    {"ADDITIONAL_INPUT_TOO_LONG", 36, 102},
+  #endif
+  #ifdef RAND_R_ALREADY_INSTANTIATED
+    {"ALREADY_INSTANTIATED", ERR_LIB_RAND, RAND_R_ALREADY_INSTANTIATED},
+  #else
+    {"ALREADY_INSTANTIATED", 36, 103},
+  #endif
+  #ifdef RAND_R_ARGUMENT_OUT_OF_RANGE
+    {"ARGUMENT_OUT_OF_RANGE", ERR_LIB_RAND, RAND_R_ARGUMENT_OUT_OF_RANGE},
+  #else
+    {"ARGUMENT_OUT_OF_RANGE", 36, 105},
+  #endif
+  #ifdef RAND_R_CANNOT_OPEN_FILE
+    {"CANNOT_OPEN_FILE", ERR_LIB_RAND, RAND_R_CANNOT_OPEN_FILE},
+  #else
+    {"CANNOT_OPEN_FILE", 36, 121},
+  #endif
+  #ifdef RAND_R_DRBG_ALREADY_INITIALIZED
+    {"DRBG_ALREADY_INITIALIZED", ERR_LIB_RAND, RAND_R_DRBG_ALREADY_INITIALIZED},
+  #else
+    {"DRBG_ALREADY_INITIALIZED", 36, 129},
+  #endif
+  #ifdef RAND_R_DRBG_NOT_INITIALISED
+    {"DRBG_NOT_INITIALISED", ERR_LIB_RAND, RAND_R_DRBG_NOT_INITIALISED},
+  #else
+    {"DRBG_NOT_INITIALISED", 36, 104},
+  #endif
+  #ifdef RAND_R_ENTROPY_INPUT_TOO_LONG
+    {"ENTROPY_INPUT_TOO_LONG", ERR_LIB_RAND, RAND_R_ENTROPY_INPUT_TOO_LONG},
+  #else
+    {"ENTROPY_INPUT_TOO_LONG", 36, 106},
+  #endif
+  #ifdef RAND_R_ENTROPY_OUT_OF_RANGE
+    {"ENTROPY_OUT_OF_RANGE", ERR_LIB_RAND, RAND_R_ENTROPY_OUT_OF_RANGE},
+  #else
+    {"ENTROPY_OUT_OF_RANGE", 36, 124},
+  #endif
+  #ifdef RAND_R_ERROR_ENTROPY_POOL_WAS_IGNORED
+    {"ERROR_ENTROPY_POOL_WAS_IGNORED", ERR_LIB_RAND, RAND_R_ERROR_ENTROPY_POOL_WAS_IGNORED},
+  #else
+    {"ERROR_ENTROPY_POOL_WAS_IGNORED", 36, 127},
+  #endif
+  #ifdef RAND_R_ERROR_INITIALISING_DRBG
+    {"ERROR_INITIALISING_DRBG", ERR_LIB_RAND, RAND_R_ERROR_INITIALISING_DRBG},
+  #else
+    {"ERROR_INITIALISING_DRBG", 36, 107},
+  #endif
+  #ifdef RAND_R_ERROR_INSTANTIATING_DRBG
+    {"ERROR_INSTANTIATING_DRBG", ERR_LIB_RAND, RAND_R_ERROR_INSTANTIATING_DRBG},
+  #else
+    {"ERROR_INSTANTIATING_DRBG", 36, 108},
+  #endif
+  #ifdef RAND_R_ERROR_RETRIEVING_ADDITIONAL_INPUT
+    {"ERROR_RETRIEVING_ADDITIONAL_INPUT", ERR_LIB_RAND, RAND_R_ERROR_RETRIEVING_ADDITIONAL_INPUT},
+  #else
+    {"ERROR_RETRIEVING_ADDITIONAL_INPUT", 36, 109},
+  #endif
+  #ifdef RAND_R_ERROR_RETRIEVING_ENTROPY
+    {"ERROR_RETRIEVING_ENTROPY", ERR_LIB_RAND, RAND_R_ERROR_RETRIEVING_ENTROPY},
+  #else
+    {"ERROR_RETRIEVING_ENTROPY", 36, 110},
+  #endif
+  #ifdef RAND_R_ERROR_RETRIEVING_NONCE
+    {"ERROR_RETRIEVING_NONCE", ERR_LIB_RAND, RAND_R_ERROR_RETRIEVING_NONCE},
+  #else
+    {"ERROR_RETRIEVING_NONCE", 36, 111},
+  #endif
+  #ifdef RAND_R_FAILED_TO_CREATE_LOCK
+    {"FAILED_TO_CREATE_LOCK", ERR_LIB_RAND, RAND_R_FAILED_TO_CREATE_LOCK},
+  #else
+    {"FAILED_TO_CREATE_LOCK", 36, 126},
+  #endif
+  #ifdef RAND_R_FUNC_NOT_IMPLEMENTED
+    {"FUNC_NOT_IMPLEMENTED", ERR_LIB_RAND, RAND_R_FUNC_NOT_IMPLEMENTED},
+  #else
+    {"FUNC_NOT_IMPLEMENTED", 36, 101},
+  #endif
+  #ifdef RAND_R_FWRITE_ERROR
+    {"FWRITE_ERROR", ERR_LIB_RAND, RAND_R_FWRITE_ERROR},
+  #else
+    {"FWRITE_ERROR", 36, 123},
+  #endif
+  #ifdef RAND_R_GENERATE_ERROR
+    {"GENERATE_ERROR", ERR_LIB_RAND, RAND_R_GENERATE_ERROR},
+  #else
+    {"GENERATE_ERROR", 36, 112},
+  #endif
+  #ifdef RAND_R_INSUFFICIENT_DRBG_STRENGTH
+    {"INSUFFICIENT_DRBG_STRENGTH", ERR_LIB_RAND, RAND_R_INSUFFICIENT_DRBG_STRENGTH},
+  #else
+    {"INSUFFICIENT_DRBG_STRENGTH", 36, 139},
+  #endif
+  #ifdef RAND_R_INTERNAL_ERROR
+    {"INTERNAL_ERROR", ERR_LIB_RAND, RAND_R_INTERNAL_ERROR},
+  #else
+    {"INTERNAL_ERROR", 36, 113},
+  #endif
+  #ifdef RAND_R_IN_ERROR_STATE
+    {"IN_ERROR_STATE", ERR_LIB_RAND, RAND_R_IN_ERROR_STATE},
+  #else
+    {"IN_ERROR_STATE", 36, 114},
+  #endif
+  #ifdef RAND_R_NOT_A_REGULAR_FILE
+    {"NOT_A_REGULAR_FILE", ERR_LIB_RAND, RAND_R_NOT_A_REGULAR_FILE},
+  #else
+    {"NOT_A_REGULAR_FILE", 36, 122},
+  #endif
+  #ifdef RAND_R_NOT_INSTANTIATED
+    {"NOT_INSTANTIATED", ERR_LIB_RAND, RAND_R_NOT_INSTANTIATED},
+  #else
+    {"NOT_INSTANTIATED", 36, 115},
+  #endif
+  #ifdef RAND_R_NO_DRBG_IMPLEMENTATION_SELECTED
+    {"NO_DRBG_IMPLEMENTATION_SELECTED", ERR_LIB_RAND, RAND_R_NO_DRBG_IMPLEMENTATION_SELECTED},
+  #else
+    {"NO_DRBG_IMPLEMENTATION_SELECTED", 36, 128},
+  #endif
+  #ifdef RAND_R_PARENT_LOCKING_NOT_ENABLED
+    {"PARENT_LOCKING_NOT_ENABLED", ERR_LIB_RAND, RAND_R_PARENT_LOCKING_NOT_ENABLED},
+  #else
+    {"PARENT_LOCKING_NOT_ENABLED", 36, 130},
+  #endif
+  #ifdef RAND_R_PARENT_STRENGTH_TOO_WEAK
+    {"PARENT_STRENGTH_TOO_WEAK", ERR_LIB_RAND, RAND_R_PARENT_STRENGTH_TOO_WEAK},
+  #else
+    {"PARENT_STRENGTH_TOO_WEAK", 36, 131},
+  #endif
+  #ifdef RAND_R_PERSONALISATION_STRING_TOO_LONG
+    {"PERSONALISATION_STRING_TOO_LONG", ERR_LIB_RAND, RAND_R_PERSONALISATION_STRING_TOO_LONG},
+  #else
+    {"PERSONALISATION_STRING_TOO_LONG", 36, 116},
+  #endif
+  #ifdef RAND_R_PREDICTION_RESISTANCE_NOT_SUPPORTED
+    {"PREDICTION_RESISTANCE_NOT_SUPPORTED", ERR_LIB_RAND, RAND_R_PREDICTION_RESISTANCE_NOT_SUPPORTED},
+  #else
+    {"PREDICTION_RESISTANCE_NOT_SUPPORTED", 36, 133},
+  #endif
+  #ifdef RAND_R_PRNG_NOT_SEEDED
+    {"PRNG_NOT_SEEDED", ERR_LIB_RAND, RAND_R_PRNG_NOT_SEEDED},
+  #else
+    {"PRNG_NOT_SEEDED", 36, 100},
+  #endif
+  #ifdef RAND_R_RANDOM_POOL_OVERFLOW
+    {"RANDOM_POOL_OVERFLOW", ERR_LIB_RAND, RAND_R_RANDOM_POOL_OVERFLOW},
+  #else
+    {"RANDOM_POOL_OVERFLOW", 36, 125},
+  #endif
+  #ifdef RAND_R_RANDOM_POOL_UNDERFLOW
+    {"RANDOM_POOL_UNDERFLOW", ERR_LIB_RAND, RAND_R_RANDOM_POOL_UNDERFLOW},
+  #else
+    {"RANDOM_POOL_UNDERFLOW", 36, 134},
+  #endif
+  #ifdef RAND_R_REQUEST_TOO_LARGE_FOR_DRBG
+    {"REQUEST_TOO_LARGE_FOR_DRBG", ERR_LIB_RAND, RAND_R_REQUEST_TOO_LARGE_FOR_DRBG},
+  #else
+    {"REQUEST_TOO_LARGE_FOR_DRBG", 36, 117},
+  #endif
+  #ifdef RAND_R_RESEED_ERROR
+    {"RESEED_ERROR", ERR_LIB_RAND, RAND_R_RESEED_ERROR},
+  #else
+    {"RESEED_ERROR", 36, 118},
+  #endif
+  #ifdef RAND_R_SELFTEST_FAILURE
+    {"SELFTEST_FAILURE", ERR_LIB_RAND, RAND_R_SELFTEST_FAILURE},
+  #else
+    {"SELFTEST_FAILURE", 36, 119},
+  #endif
+  #ifdef RAND_R_TOO_LITTLE_NONCE_REQUESTED
+    {"TOO_LITTLE_NONCE_REQUESTED", ERR_LIB_RAND, RAND_R_TOO_LITTLE_NONCE_REQUESTED},
+  #else
+    {"TOO_LITTLE_NONCE_REQUESTED", 36, 135},
+  #endif
+  #ifdef RAND_R_TOO_MUCH_NONCE_REQUESTED
+    {"TOO_MUCH_NONCE_REQUESTED", ERR_LIB_RAND, RAND_R_TOO_MUCH_NONCE_REQUESTED},
+  #else
+    {"TOO_MUCH_NONCE_REQUESTED", 36, 136},
+  #endif
+  #ifdef RAND_R_UNABLE_TO_CREATE_DRBG
+    {"UNABLE_TO_CREATE_DRBG", ERR_LIB_RAND, RAND_R_UNABLE_TO_CREATE_DRBG},
+  #else
+    {"UNABLE_TO_CREATE_DRBG", 36, 143},
+  #endif
+  #ifdef RAND_R_UNABLE_TO_FETCH_DRBG
+    {"UNABLE_TO_FETCH_DRBG", ERR_LIB_RAND, RAND_R_UNABLE_TO_FETCH_DRBG},
+  #else
+    {"UNABLE_TO_FETCH_DRBG", 36, 144},
+  #endif
+  #ifdef RAND_R_UNABLE_TO_GET_PARENT_RESEED_PROP_COUNTER
+    {"UNABLE_TO_GET_PARENT_RESEED_PROP_COUNTER", ERR_LIB_RAND, RAND_R_UNABLE_TO_GET_PARENT_RESEED_PROP_COUNTER},
+  #else
+    {"UNABLE_TO_GET_PARENT_RESEED_PROP_COUNTER", 36, 141},
+  #endif
+  #ifdef RAND_R_UNABLE_TO_GET_PARENT_STRENGTH
+    {"UNABLE_TO_GET_PARENT_STRENGTH", ERR_LIB_RAND, RAND_R_UNABLE_TO_GET_PARENT_STRENGTH},
+  #else
+    {"UNABLE_TO_GET_PARENT_STRENGTH", 36, 138},
+  #endif
+  #ifdef RAND_R_UNABLE_TO_LOCK_PARENT
+    {"UNABLE_TO_LOCK_PARENT", ERR_LIB_RAND, RAND_R_UNABLE_TO_LOCK_PARENT},
+  #else
+    {"UNABLE_TO_LOCK_PARENT", 36, 140},
+  #endif
+  #ifdef RAND_R_UNSUPPORTED_DRBG_FLAGS
+    {"UNSUPPORTED_DRBG_FLAGS", ERR_LIB_RAND, RAND_R_UNSUPPORTED_DRBG_FLAGS},
+  #else
+    {"UNSUPPORTED_DRBG_FLAGS", 36, 132},
+  #endif
+  #ifdef RAND_R_UNSUPPORTED_DRBG_TYPE
+    {"UNSUPPORTED_DRBG_TYPE", ERR_LIB_RAND, RAND_R_UNSUPPORTED_DRBG_TYPE},
+  #else
+    {"UNSUPPORTED_DRBG_TYPE", 36, 120},
+  #endif
+  #ifdef RSA_R_ALGORITHM_MISMATCH
+    {"ALGORITHM_MISMATCH", ERR_LIB_RSA, RSA_R_ALGORITHM_MISMATCH},
+  #else
+    {"ALGORITHM_MISMATCH", 4, 100},
+  #endif
+  #ifdef RSA_R_BAD_E_VALUE
+    {"BAD_E_VALUE", ERR_LIB_RSA, RSA_R_BAD_E_VALUE},
+  #else
+    {"BAD_E_VALUE", 4, 101},
+  #endif
+  #ifdef RSA_R_BAD_FIXED_HEADER_DECRYPT
+    {"BAD_FIXED_HEADER_DECRYPT", ERR_LIB_RSA, RSA_R_BAD_FIXED_HEADER_DECRYPT},
+  #else
+    {"BAD_FIXED_HEADER_DECRYPT", 4, 102},
+  #endif
+  #ifdef RSA_R_BAD_PAD_BYTE_COUNT
+    {"BAD_PAD_BYTE_COUNT", ERR_LIB_RSA, RSA_R_BAD_PAD_BYTE_COUNT},
+  #else
+    {"BAD_PAD_BYTE_COUNT", 4, 103},
+  #endif
+  #ifdef RSA_R_BAD_SIGNATURE
+    {"BAD_SIGNATURE", ERR_LIB_RSA, RSA_R_BAD_SIGNATURE},
+  #else
+    {"BAD_SIGNATURE", 4, 104},
+  #endif
+  #ifdef RSA_R_BLOCK_TYPE_IS_NOT_01
+    {"BLOCK_TYPE_IS_NOT_01", ERR_LIB_RSA, RSA_R_BLOCK_TYPE_IS_NOT_01},
+  #else
+    {"BLOCK_TYPE_IS_NOT_01", 4, 106},
+  #endif
+  #ifdef RSA_R_BLOCK_TYPE_IS_NOT_02
+    {"BLOCK_TYPE_IS_NOT_02", ERR_LIB_RSA, RSA_R_BLOCK_TYPE_IS_NOT_02},
+  #else
+    {"BLOCK_TYPE_IS_NOT_02", 4, 107},
+  #endif
+  #ifdef RSA_R_DATA_GREATER_THAN_MOD_LEN
+    {"DATA_GREATER_THAN_MOD_LEN", ERR_LIB_RSA, RSA_R_DATA_GREATER_THAN_MOD_LEN},
+  #else
+    {"DATA_GREATER_THAN_MOD_LEN", 4, 108},
+  #endif
+  #ifdef RSA_R_DATA_TOO_LARGE
+    {"DATA_TOO_LARGE", ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE},
+  #else
+    {"DATA_TOO_LARGE", 4, 109},
+  #endif
+  #ifdef RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE
+    {"DATA_TOO_LARGE_FOR_KEY_SIZE", ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE},
+  #else
+    {"DATA_TOO_LARGE_FOR_KEY_SIZE", 4, 110},
+  #endif
+  #ifdef RSA_R_DATA_TOO_LARGE_FOR_MODULUS
+    {"DATA_TOO_LARGE_FOR_MODULUS", ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS},
+  #else
+    {"DATA_TOO_LARGE_FOR_MODULUS", 4, 132},
+  #endif
+  #ifdef RSA_R_DATA_TOO_SMALL
+    {"DATA_TOO_SMALL", ERR_LIB_RSA, RSA_R_DATA_TOO_SMALL},
+  #else
+    {"DATA_TOO_SMALL", 4, 111},
+  #endif
+  #ifdef RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE
+    {"DATA_TOO_SMALL_FOR_KEY_SIZE", ERR_LIB_RSA, RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE},
+  #else
+    {"DATA_TOO_SMALL_FOR_KEY_SIZE", 4, 122},
+  #endif
+  #ifdef RSA_R_DIGEST_DOES_NOT_MATCH
+    {"DIGEST_DOES_NOT_MATCH", ERR_LIB_RSA, RSA_R_DIGEST_DOES_NOT_MATCH},
+  #else
+    {"DIGEST_DOES_NOT_MATCH", 4, 158},
+  #endif
+  #ifdef RSA_R_DIGEST_NOT_ALLOWED
+    {"DIGEST_NOT_ALLOWED", ERR_LIB_RSA, RSA_R_DIGEST_NOT_ALLOWED},
+  #else
+    {"DIGEST_NOT_ALLOWED", 4, 145},
+  #endif
+  #ifdef RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY
+    {"DIGEST_TOO_BIG_FOR_RSA_KEY", ERR_LIB_RSA, RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY},
+  #else
+    {"DIGEST_TOO_BIG_FOR_RSA_KEY", 4, 112},
+  #endif
+  #ifdef RSA_R_DMP1_NOT_CONGRUENT_TO_D
+    {"DMP1_NOT_CONGRUENT_TO_D", ERR_LIB_RSA, RSA_R_DMP1_NOT_CONGRUENT_TO_D},
+  #else
+    {"DMP1_NOT_CONGRUENT_TO_D", 4, 124},
+  #endif
+  #ifdef RSA_R_DMQ1_NOT_CONGRUENT_TO_D
+    {"DMQ1_NOT_CONGRUENT_TO_D", ERR_LIB_RSA, RSA_R_DMQ1_NOT_CONGRUENT_TO_D},
+  #else
+    {"DMQ1_NOT_CONGRUENT_TO_D", 4, 125},
+  #endif
+  #ifdef RSA_R_D_E_NOT_CONGRUENT_TO_1
+    {"D_E_NOT_CONGRUENT_TO_1", ERR_LIB_RSA, RSA_R_D_E_NOT_CONGRUENT_TO_1},
+  #else
+    {"D_E_NOT_CONGRUENT_TO_1", 4, 123},
+  #endif
+  #ifdef RSA_R_FIRST_OCTET_INVALID
+    {"FIRST_OCTET_INVALID", ERR_LIB_RSA, RSA_R_FIRST_OCTET_INVALID},
+  #else
+    {"FIRST_OCTET_INVALID", 4, 133},
+  #endif
+  #ifdef RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE
+    {"ILLEGAL_OR_UNSUPPORTED_PADDING_MODE", ERR_LIB_RSA, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE},
+  #else
+    {"ILLEGAL_OR_UNSUPPORTED_PADDING_MODE", 4, 144},
+  #endif
+  #ifdef RSA_R_INVALID_DIGEST
+    {"INVALID_DIGEST", ERR_LIB_RSA, RSA_R_INVALID_DIGEST},
+  #else
+    {"INVALID_DIGEST", 4, 157},
+  #endif
+  #ifdef RSA_R_INVALID_DIGEST_LENGTH
+    {"INVALID_DIGEST_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH},
+  #else
+    {"INVALID_DIGEST_LENGTH", 4, 143},
+  #endif
+  #ifdef RSA_R_INVALID_HEADER
+    {"INVALID_HEADER", ERR_LIB_RSA, RSA_R_INVALID_HEADER},
+  #else
+    {"INVALID_HEADER", 4, 137},
+  #endif
+  #ifdef RSA_R_INVALID_KEYPAIR
+    {"INVALID_KEYPAIR", ERR_LIB_RSA, RSA_R_INVALID_KEYPAIR},
+  #else
+    {"INVALID_KEYPAIR", 4, 171},
+  #endif
+  #ifdef RSA_R_INVALID_KEY_LENGTH
+    {"INVALID_KEY_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_KEY_LENGTH},
+  #else
+    {"INVALID_KEY_LENGTH", 4, 173},
+  #endif
+  #ifdef RSA_R_INVALID_LABEL
+    {"INVALID_LABEL", ERR_LIB_RSA, RSA_R_INVALID_LABEL},
+  #else
+    {"INVALID_LABEL", 4, 160},
+  #endif
+  #ifdef RSA_R_INVALID_LENGTH
+    {"INVALID_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_LENGTH},
+  #else
+    {"INVALID_LENGTH", 4, 181},
+  #endif
+  #ifdef RSA_R_INVALID_MESSAGE_LENGTH
+    {"INVALID_MESSAGE_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_MESSAGE_LENGTH},
+  #else
+    {"INVALID_MESSAGE_LENGTH", 4, 131},
+  #endif
+  #ifdef RSA_R_INVALID_MGF1_MD
+    {"INVALID_MGF1_MD", ERR_LIB_RSA, RSA_R_INVALID_MGF1_MD},
+  #else
+    {"INVALID_MGF1_MD", 4, 156},
+  #endif
+  #ifdef RSA_R_INVALID_MODULUS
+    {"INVALID_MODULUS", ERR_LIB_RSA, RSA_R_INVALID_MODULUS},
+  #else
+    {"INVALID_MODULUS", 4, 174},
+  #endif
+  #ifdef RSA_R_INVALID_MULTI_PRIME_KEY
+    {"INVALID_MULTI_PRIME_KEY", ERR_LIB_RSA, RSA_R_INVALID_MULTI_PRIME_KEY},
+  #else
+    {"INVALID_MULTI_PRIME_KEY", 4, 167},
+  #endif
+  #ifdef RSA_R_INVALID_OAEP_PARAMETERS
+    {"INVALID_OAEP_PARAMETERS", ERR_LIB_RSA, RSA_R_INVALID_OAEP_PARAMETERS},
+  #else
+    {"INVALID_OAEP_PARAMETERS", 4, 161},
+  #endif
+  #ifdef RSA_R_INVALID_PADDING
+    {"INVALID_PADDING", ERR_LIB_RSA, RSA_R_INVALID_PADDING},
+  #else
+    {"INVALID_PADDING", 4, 138},
+  #endif
+  #ifdef RSA_R_INVALID_PADDING_MODE
+    {"INVALID_PADDING_MODE", ERR_LIB_RSA, RSA_R_INVALID_PADDING_MODE},
+  #else
+    {"INVALID_PADDING_MODE", 4, 141},
+  #endif
+  #ifdef RSA_R_INVALID_PSS_PARAMETERS
+    {"INVALID_PSS_PARAMETERS", ERR_LIB_RSA, RSA_R_INVALID_PSS_PARAMETERS},
+  #else
+    {"INVALID_PSS_PARAMETERS", 4, 149},
+  #endif
+  #ifdef RSA_R_INVALID_PSS_SALTLEN
+    {"INVALID_PSS_SALTLEN", ERR_LIB_RSA, RSA_R_INVALID_PSS_SALTLEN},
+  #else
+    {"INVALID_PSS_SALTLEN", 4, 146},
+  #endif
+  #ifdef RSA_R_INVALID_REQUEST
+    {"INVALID_REQUEST", ERR_LIB_RSA, RSA_R_INVALID_REQUEST},
+  #else
+    {"INVALID_REQUEST", 4, 175},
+  #endif
+  #ifdef RSA_R_INVALID_SALT_LENGTH
+    {"INVALID_SALT_LENGTH", ERR_LIB_RSA, RSA_R_INVALID_SALT_LENGTH},
+  #else
+    {"INVALID_SALT_LENGTH", 4, 150},
+  #endif
+  #ifdef RSA_R_INVALID_STRENGTH
+    {"INVALID_STRENGTH", ERR_LIB_RSA, RSA_R_INVALID_STRENGTH},
+  #else
+    {"INVALID_STRENGTH", 4, 176},
+  #endif
+  #ifdef RSA_R_INVALID_TRAILER
+    {"INVALID_TRAILER", ERR_LIB_RSA, RSA_R_INVALID_TRAILER},
+  #else
+    {"INVALID_TRAILER", 4, 139},
+  #endif
+  #ifdef RSA_R_INVALID_X931_DIGEST
+    {"INVALID_X931_DIGEST", ERR_LIB_RSA, RSA_R_INVALID_X931_DIGEST},
+  #else
+    {"INVALID_X931_DIGEST", 4, 142},
+  #endif
+  #ifdef RSA_R_IQMP_NOT_INVERSE_OF_Q
+    {"IQMP_NOT_INVERSE_OF_Q", ERR_LIB_RSA, RSA_R_IQMP_NOT_INVERSE_OF_Q},
+  #else
+    {"IQMP_NOT_INVERSE_OF_Q", 4, 126},
+  #endif
+  #ifdef RSA_R_KEY_PRIME_NUM_INVALID
+    {"KEY_PRIME_NUM_INVALID", ERR_LIB_RSA, RSA_R_KEY_PRIME_NUM_INVALID},
+  #else
+    {"KEY_PRIME_NUM_INVALID", 4, 165},
+  #endif
+  #ifdef RSA_R_KEY_SIZE_TOO_SMALL
+    {"KEY_SIZE_TOO_SMALL", ERR_LIB_RSA, RSA_R_KEY_SIZE_TOO_SMALL},
+  #else
+    {"KEY_SIZE_TOO_SMALL", 4, 120},
+  #endif
+  #ifdef RSA_R_LAST_OCTET_INVALID
+    {"LAST_OCTET_INVALID", ERR_LIB_RSA, RSA_R_LAST_OCTET_INVALID},
+  #else
+    {"LAST_OCTET_INVALID", 4, 134},
+  #endif
+  #ifdef RSA_R_MGF1_DIGEST_NOT_ALLOWED
+    {"MGF1_DIGEST_NOT_ALLOWED", ERR_LIB_RSA, RSA_R_MGF1_DIGEST_NOT_ALLOWED},
+  #else
+    {"MGF1_DIGEST_NOT_ALLOWED", 4, 152},
+  #endif
+  #ifdef RSA_R_MISSING_PRIVATE_KEY
+    {"MISSING_PRIVATE_KEY", ERR_LIB_RSA, RSA_R_MISSING_PRIVATE_KEY},
+  #else
+    {"MISSING_PRIVATE_KEY", 4, 179},
+  #endif
+  #ifdef RSA_R_MODULUS_TOO_LARGE
+    {"MODULUS_TOO_LARGE", ERR_LIB_RSA, RSA_R_MODULUS_TOO_LARGE},
+  #else
+    {"MODULUS_TOO_LARGE", 4, 105},
+  #endif
+  #ifdef RSA_R_MP_COEFFICIENT_NOT_INVERSE_OF_R
+    {"MP_COEFFICIENT_NOT_INVERSE_OF_R", ERR_LIB_RSA, RSA_R_MP_COEFFICIENT_NOT_INVERSE_OF_R},
+  #else
+    {"MP_COEFFICIENT_NOT_INVERSE_OF_R", 4, 168},
+  #endif
+  #ifdef RSA_R_MP_EXPONENT_NOT_CONGRUENT_TO_D
+    {"MP_EXPONENT_NOT_CONGRUENT_TO_D", ERR_LIB_RSA, RSA_R_MP_EXPONENT_NOT_CONGRUENT_TO_D},
+  #else
+    {"MP_EXPONENT_NOT_CONGRUENT_TO_D", 4, 169},
+  #endif
+  #ifdef RSA_R_MP_R_NOT_PRIME
+    {"MP_R_NOT_PRIME", ERR_LIB_RSA, RSA_R_MP_R_NOT_PRIME},
+  #else
+    {"MP_R_NOT_PRIME", 4, 170},
+  #endif
+  #ifdef RSA_R_NO_PUBLIC_EXPONENT
+    {"NO_PUBLIC_EXPONENT", ERR_LIB_RSA, RSA_R_NO_PUBLIC_EXPONENT},
+  #else
+    {"NO_PUBLIC_EXPONENT", 4, 140},
+  #endif
+  #ifdef RSA_R_NULL_BEFORE_BLOCK_MISSING
+    {"NULL_BEFORE_BLOCK_MISSING", ERR_LIB_RSA, RSA_R_NULL_BEFORE_BLOCK_MISSING},
+  #else
+    {"NULL_BEFORE_BLOCK_MISSING", 4, 113},
+  #endif
+  #ifdef RSA_R_N_DOES_NOT_EQUAL_PRODUCT_OF_PRIMES
+    {"N_DOES_NOT_EQUAL_PRODUCT_OF_PRIMES", ERR_LIB_RSA, RSA_R_N_DOES_NOT_EQUAL_PRODUCT_OF_PRIMES},
+  #else
+    {"N_DOES_NOT_EQUAL_PRODUCT_OF_PRIMES", 4, 172},
+  #endif
+  #ifdef RSA_R_N_DOES_NOT_EQUAL_P_Q
+    {"N_DOES_NOT_EQUAL_P_Q", ERR_LIB_RSA, RSA_R_N_DOES_NOT_EQUAL_P_Q},
+  #else
+    {"N_DOES_NOT_EQUAL_P_Q", 4, 127},
+  #endif
+  #ifdef RSA_R_OAEP_DECODING_ERROR
+    {"OAEP_DECODING_ERROR", ERR_LIB_RSA, RSA_R_OAEP_DECODING_ERROR},
+  #else
+    {"OAEP_DECODING_ERROR", 4, 121},
+  #endif
+  #ifdef RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE
+    {"OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE", ERR_LIB_RSA, RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE},
+  #else
+    {"OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE", 4, 148},
+  #endif
+  #ifdef RSA_R_PADDING_CHECK_FAILED
+    {"PADDING_CHECK_FAILED", ERR_LIB_RSA, RSA_R_PADDING_CHECK_FAILED},
+  #else
+    {"PADDING_CHECK_FAILED", 4, 114},
+  #endif
+  #ifdef RSA_R_PAIRWISE_TEST_FAILURE
+    {"PAIRWISE_TEST_FAILURE", ERR_LIB_RSA, RSA_R_PAIRWISE_TEST_FAILURE},
+  #else
+    {"PAIRWISE_TEST_FAILURE", 4, 177},
+  #endif
+  #ifdef RSA_R_PKCS_DECODING_ERROR
+    {"PKCS_DECODING_ERROR", ERR_LIB_RSA, RSA_R_PKCS_DECODING_ERROR},
+  #else
+    {"PKCS_DECODING_ERROR", 4, 159},
+  #endif
+  #ifdef RSA_R_PSS_SALTLEN_TOO_SMALL
+    {"PSS_SALTLEN_TOO_SMALL", ERR_LIB_RSA, RSA_R_PSS_SALTLEN_TOO_SMALL},
+  #else
+    {"PSS_SALTLEN_TOO_SMALL", 4, 164},
+  #endif
+  #ifdef RSA_R_PUB_EXPONENT_OUT_OF_RANGE
+    {"PUB_EXPONENT_OUT_OF_RANGE", ERR_LIB_RSA, RSA_R_PUB_EXPONENT_OUT_OF_RANGE},
+  #else
+    {"PUB_EXPONENT_OUT_OF_RANGE", 4, 178},
+  #endif
+  #ifdef RSA_R_P_NOT_PRIME
+    {"P_NOT_PRIME", ERR_LIB_RSA, RSA_R_P_NOT_PRIME},
+  #else
+    {"P_NOT_PRIME", 4, 128},
+  #endif
+  #ifdef RSA_R_Q_NOT_PRIME
+    {"Q_NOT_PRIME", ERR_LIB_RSA, RSA_R_Q_NOT_PRIME},
+  #else
+    {"Q_NOT_PRIME", 4, 129},
+  #endif
+  #ifdef RSA_R_RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT
+    {"RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT", ERR_LIB_RSA, RSA_R_RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT},
+  #else
+    {"RANDOMNESS_SOURCE_STRENGTH_INSUFFICIENT", 4, 180},
+  #endif
+  #ifdef RSA_R_RSA_OPERATIONS_NOT_SUPPORTED
+    {"RSA_OPERATIONS_NOT_SUPPORTED", ERR_LIB_RSA, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED},
+  #else
+    {"RSA_OPERATIONS_NOT_SUPPORTED", 4, 130},
+  #endif
+  #ifdef RSA_R_SLEN_CHECK_FAILED
+    {"SLEN_CHECK_FAILED", ERR_LIB_RSA, RSA_R_SLEN_CHECK_FAILED},
+  #else
+    {"SLEN_CHECK_FAILED", 4, 136},
+  #endif
+  #ifdef RSA_R_SLEN_RECOVERY_FAILED
+    {"SLEN_RECOVERY_FAILED", ERR_LIB_RSA, RSA_R_SLEN_RECOVERY_FAILED},
+  #else
+    {"SLEN_RECOVERY_FAILED", 4, 135},
+  #endif
+  #ifdef RSA_R_SSLV3_ROLLBACK_ATTACK
+    {"SSLV3_ROLLBACK_ATTACK", ERR_LIB_RSA, RSA_R_SSLV3_ROLLBACK_ATTACK},
+  #else
+    {"SSLV3_ROLLBACK_ATTACK", 4, 115},
+  #endif
+  #ifdef RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD
+    {"THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD", ERR_LIB_RSA, RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD},
+  #else
+    {"THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD", 4, 116},
+  #endif
+  #ifdef RSA_R_UNKNOWN_ALGORITHM_TYPE
+    {"UNKNOWN_ALGORITHM_TYPE", ERR_LIB_RSA, RSA_R_UNKNOWN_ALGORITHM_TYPE},
+  #else
+    {"UNKNOWN_ALGORITHM_TYPE", 4, 117},
+  #endif
+  #ifdef RSA_R_UNKNOWN_DIGEST
+    {"UNKNOWN_DIGEST", ERR_LIB_RSA, RSA_R_UNKNOWN_DIGEST},
+  #else
+    {"UNKNOWN_DIGEST", 4, 166},
+  #endif
+  #ifdef RSA_R_UNKNOWN_MASK_DIGEST
+    {"UNKNOWN_MASK_DIGEST", ERR_LIB_RSA, RSA_R_UNKNOWN_MASK_DIGEST},
+  #else
+    {"UNKNOWN_MASK_DIGEST", 4, 151},
+  #endif
+  #ifdef RSA_R_UNKNOWN_PADDING_TYPE
+    {"UNKNOWN_PADDING_TYPE", ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE},
+  #else
+    {"UNKNOWN_PADDING_TYPE", 4, 118},
+  #endif
+  #ifdef RSA_R_UNSUPPORTED_ENCRYPTION_TYPE
+    {"UNSUPPORTED_ENCRYPTION_TYPE", ERR_LIB_RSA, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE},
+  #else
+    {"UNSUPPORTED_ENCRYPTION_TYPE", 4, 162},
+  #endif
+  #ifdef RSA_R_UNSUPPORTED_LABEL_SOURCE
+    {"UNSUPPORTED_LABEL_SOURCE", ERR_LIB_RSA, RSA_R_UNSUPPORTED_LABEL_SOURCE},
+  #else
+    {"UNSUPPORTED_LABEL_SOURCE", 4, 163},
+  #endif
+  #ifdef RSA_R_UNSUPPORTED_MASK_ALGORITHM
+    {"UNSUPPORTED_MASK_ALGORITHM", ERR_LIB_RSA, RSA_R_UNSUPPORTED_MASK_ALGORITHM},
+  #else
+    {"UNSUPPORTED_MASK_ALGORITHM", 4, 153},
+  #endif
+  #ifdef RSA_R_UNSUPPORTED_MASK_PARAMETER
+    {"UNSUPPORTED_MASK_PARAMETER", ERR_LIB_RSA, RSA_R_UNSUPPORTED_MASK_PARAMETER},
+  #else
+    {"UNSUPPORTED_MASK_PARAMETER", 4, 154},
+  #endif
+  #ifdef RSA_R_UNSUPPORTED_SIGNATURE_TYPE
+    {"UNSUPPORTED_SIGNATURE_TYPE", ERR_LIB_RSA, RSA_R_UNSUPPORTED_SIGNATURE_TYPE},
+  #else
+    {"UNSUPPORTED_SIGNATURE_TYPE", 4, 155},
+  #endif
+  #ifdef RSA_R_VALUE_MISSING
+    {"VALUE_MISSING", ERR_LIB_RSA, RSA_R_VALUE_MISSING},
+  #else
+    {"VALUE_MISSING", 4, 147},
+  #endif
+  #ifdef RSA_R_WRONG_SIGNATURE_LENGTH
+    {"WRONG_SIGNATURE_LENGTH", ERR_LIB_RSA, RSA_R_WRONG_SIGNATURE_LENGTH},
+  #else
+    {"WRONG_SIGNATURE_LENGTH", 4, 119},
+  #endif
+  #ifdef SM2_R_ASN1_ERROR
+    {"ASN1_ERROR", ERR_LIB_SM2, SM2_R_ASN1_ERROR},
+  #else
+    {"ASN1_ERROR", 53, 100},
+  #endif
+  #ifdef SM2_R_BAD_SIGNATURE
+    {"BAD_SIGNATURE", ERR_LIB_SM2, SM2_R_BAD_SIGNATURE},
+  #else
+    {"BAD_SIGNATURE", 53, 101},
+  #endif
+  #ifdef SM2_R_BUFFER_TOO_SMALL
+    {"BUFFER_TOO_SMALL", ERR_LIB_SM2, SM2_R_BUFFER_TOO_SMALL},
+  #else
+    {"BUFFER_TOO_SMALL", 53, 107},
+  #endif
+  #ifdef SM2_R_DIST_ID_TOO_LARGE
+    {"DIST_ID_TOO_LARGE", ERR_LIB_SM2, SM2_R_DIST_ID_TOO_LARGE},
+  #else
+    {"DIST_ID_TOO_LARGE", 53, 110},
+  #endif
+  #ifdef SM2_R_ID_NOT_SET
+    {"ID_NOT_SET", ERR_LIB_SM2, SM2_R_ID_NOT_SET},
+  #else
+    {"ID_NOT_SET", 53, 112},
+  #endif
+  #ifdef SM2_R_ID_TOO_LARGE
+    {"ID_TOO_LARGE", ERR_LIB_SM2, SM2_R_ID_TOO_LARGE},
+  #else
+    {"ID_TOO_LARGE", 53, 111},
+  #endif
+  #ifdef SM2_R_INVALID_CURVE
+    {"INVALID_CURVE", ERR_LIB_SM2, SM2_R_INVALID_CURVE},
+  #else
+    {"INVALID_CURVE", 53, 108},
+  #endif
+  #ifdef SM2_R_INVALID_DIGEST
+    {"INVALID_DIGEST", ERR_LIB_SM2, SM2_R_INVALID_DIGEST},
+  #else
+    {"INVALID_DIGEST", 53, 102},
+  #endif
+  #ifdef SM2_R_INVALID_DIGEST_TYPE
+    {"INVALID_DIGEST_TYPE", ERR_LIB_SM2, SM2_R_INVALID_DIGEST_TYPE},
+  #else
+    {"INVALID_DIGEST_TYPE", 53, 103},
+  #endif
+  #ifdef SM2_R_INVALID_ENCODING
+    {"INVALID_ENCODING", ERR_LIB_SM2, SM2_R_INVALID_ENCODING},
+  #else
+    {"INVALID_ENCODING", 53, 104},
+  #endif
+  #ifdef SM2_R_INVALID_FIELD
+    {"INVALID_FIELD", ERR_LIB_SM2, SM2_R_INVALID_FIELD},
+  #else
+    {"INVALID_FIELD", 53, 105},
+  #endif
+  #ifdef SM2_R_INVALID_PRIVATE_KEY
+    {"INVALID_PRIVATE_KEY", ERR_LIB_SM2, SM2_R_INVALID_PRIVATE_KEY},
+  #else
+    {"INVALID_PRIVATE_KEY", 53, 113},
+  #endif
+  #ifdef SM2_R_NO_PARAMETERS_SET
+    {"NO_PARAMETERS_SET", ERR_LIB_SM2, SM2_R_NO_PARAMETERS_SET},
+  #else
+    {"NO_PARAMETERS_SET", 53, 109},
+  #endif
+  #ifdef SM2_R_USER_ID_TOO_LARGE
+    {"USER_ID_TOO_LARGE", ERR_LIB_SM2, SM2_R_USER_ID_TOO_LARGE},
+  #else
+    {"USER_ID_TOO_LARGE", 53, 106},
+  #endif
+  #ifdef SSL_R_APPLICATION_DATA_AFTER_CLOSE_NOTIFY
+    {"APPLICATION_DATA_AFTER_CLOSE_NOTIFY", ERR_LIB_SSL, SSL_R_APPLICATION_DATA_AFTER_CLOSE_NOTIFY},
+  #else
+    {"APPLICATION_DATA_AFTER_CLOSE_NOTIFY", 20, 291},
+  #endif
+  #ifdef SSL_R_APP_DATA_IN_HANDSHAKE
+    {"APP_DATA_IN_HANDSHAKE", ERR_LIB_SSL, SSL_R_APP_DATA_IN_HANDSHAKE},
+  #else
+    {"APP_DATA_IN_HANDSHAKE", 20, 100},
+  #endif
+  #ifdef SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
+    {"ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT", ERR_LIB_SSL, SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT},
+  #else
+    {"ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT", 20, 272},
+  #endif
+  #ifdef SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE
+    {"AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE", ERR_LIB_SSL, SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE},
+  #else
+    {"AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE", 20, 158},
+  #endif
+  #ifdef SSL_R_BAD_CHANGE_CIPHER_SPEC
+    {"BAD_CHANGE_CIPHER_SPEC", ERR_LIB_SSL, SSL_R_BAD_CHANGE_CIPHER_SPEC},
+  #else
+    {"BAD_CHANGE_CIPHER_SPEC", 20, 103},
+  #endif
+  #ifdef SSL_R_BAD_CIPHER
+    {"BAD_CIPHER", ERR_LIB_SSL, SSL_R_BAD_CIPHER},
+  #else
+    {"BAD_CIPHER", 20, 186},
+  #endif
+  #ifdef SSL_R_BAD_DATA
+    {"BAD_DATA", ERR_LIB_SSL, SSL_R_BAD_DATA},
+  #else
+    {"BAD_DATA", 20, 390},
+  #endif
+  #ifdef SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
+    {"BAD_DATA_RETURNED_BY_CALLBACK", ERR_LIB_SSL, SSL_R_BAD_DATA_RETURNED_BY_CALLBACK},
+  #else
+    {"BAD_DATA_RETURNED_BY_CALLBACK", 20, 106},
+  #endif
+  #ifdef SSL_R_BAD_DECOMPRESSION
+    {"BAD_DECOMPRESSION", ERR_LIB_SSL, SSL_R_BAD_DECOMPRESSION},
+  #else
+    {"BAD_DECOMPRESSION", 20, 107},
+  #endif
+  #ifdef SSL_R_BAD_DH_VALUE
+    {"BAD_DH_VALUE", ERR_LIB_SSL, SSL_R_BAD_DH_VALUE},
+  #else
+    {"BAD_DH_VALUE", 20, 102},
+  #endif
+  #ifdef SSL_R_BAD_DIGEST_LENGTH
+    {"BAD_DIGEST_LENGTH", ERR_LIB_SSL, SSL_R_BAD_DIGEST_LENGTH},
+  #else
+    {"BAD_DIGEST_LENGTH", 20, 111},
+  #endif
+  #ifdef SSL_R_BAD_EARLY_DATA
+    {"BAD_EARLY_DATA", ERR_LIB_SSL, SSL_R_BAD_EARLY_DATA},
+  #else
+    {"BAD_EARLY_DATA", 20, 233},
+  #endif
+  #ifdef SSL_R_BAD_ECC_CERT
+    {"BAD_ECC_CERT", ERR_LIB_SSL, SSL_R_BAD_ECC_CERT},
+  #else
+    {"BAD_ECC_CERT", 20, 304},
+  #endif
+  #ifdef SSL_R_BAD_ECPOINT
+    {"BAD_ECPOINT", ERR_LIB_SSL, SSL_R_BAD_ECPOINT},
+  #else
+    {"BAD_ECPOINT", 20, 306},
+  #endif
+  #ifdef SSL_R_BAD_EXTENSION
+    {"BAD_EXTENSION", ERR_LIB_SSL, SSL_R_BAD_EXTENSION},
+  #else
+    {"BAD_EXTENSION", 20, 110},
+  #endif
+  #ifdef SSL_R_BAD_HANDSHAKE_LENGTH
+    {"BAD_HANDSHAKE_LENGTH", ERR_LIB_SSL, SSL_R_BAD_HANDSHAKE_LENGTH},
+  #else
+    {"BAD_HANDSHAKE_LENGTH", 20, 332},
+  #endif
+  #ifdef SSL_R_BAD_HANDSHAKE_STATE
+    {"BAD_HANDSHAKE_STATE", ERR_LIB_SSL, SSL_R_BAD_HANDSHAKE_STATE},
+  #else
+    {"BAD_HANDSHAKE_STATE", 20, 236},
+  #endif
+  #ifdef SSL_R_BAD_HELLO_REQUEST
+    {"BAD_HELLO_REQUEST", ERR_LIB_SSL, SSL_R_BAD_HELLO_REQUEST},
+  #else
+    {"BAD_HELLO_REQUEST", 20, 105},
+  #endif
+  #ifdef SSL_R_BAD_HRR_VERSION
+    {"BAD_HRR_VERSION", ERR_LIB_SSL, SSL_R_BAD_HRR_VERSION},
+  #else
+    {"BAD_HRR_VERSION", 20, 263},
+  #endif
+  #ifdef SSL_R_BAD_KEY_SHARE
+    {"BAD_KEY_SHARE", ERR_LIB_SSL, SSL_R_BAD_KEY_SHARE},
+  #else
+    {"BAD_KEY_SHARE", 20, 108},
+  #endif
+  #ifdef SSL_R_BAD_KEY_UPDATE
+    {"BAD_KEY_UPDATE", ERR_LIB_SSL, SSL_R_BAD_KEY_UPDATE},
+  #else
+    {"BAD_KEY_UPDATE", 20, 122},
+  #endif
+  #ifdef SSL_R_BAD_LEGACY_VERSION
+    {"BAD_LEGACY_VERSION", ERR_LIB_SSL, SSL_R_BAD_LEGACY_VERSION},
+  #else
+    {"BAD_LEGACY_VERSION", 20, 292},
+  #endif
+  #ifdef SSL_R_BAD_LENGTH
+    {"BAD_LENGTH", ERR_LIB_SSL, SSL_R_BAD_LENGTH},
+  #else
+    {"BAD_LENGTH", 20, 271},
+  #endif
+  #ifdef SSL_R_BAD_PACKET
+    {"BAD_PACKET", ERR_LIB_SSL, SSL_R_BAD_PACKET},
+  #else
+    {"BAD_PACKET", 20, 240},
+  #endif
+  #ifdef SSL_R_BAD_PACKET_LENGTH
+    {"BAD_PACKET_LENGTH", ERR_LIB_SSL, SSL_R_BAD_PACKET_LENGTH},
+  #else
+    {"BAD_PACKET_LENGTH", 20, 115},
+  #endif
+  #ifdef SSL_R_BAD_PROTOCOL_VERSION_NUMBER
+    {"BAD_PROTOCOL_VERSION_NUMBER", ERR_LIB_SSL, SSL_R_BAD_PROTOCOL_VERSION_NUMBER},
+  #else
+    {"BAD_PROTOCOL_VERSION_NUMBER", 20, 116},
+  #endif
+  #ifdef SSL_R_BAD_PSK
+    {"BAD_PSK", ERR_LIB_SSL, SSL_R_BAD_PSK},
+  #else
+    {"BAD_PSK", 20, 219},
+  #endif
+  #ifdef SSL_R_BAD_PSK_IDENTITY
+    {"BAD_PSK_IDENTITY", ERR_LIB_SSL, SSL_R_BAD_PSK_IDENTITY},
+  #else
+    {"BAD_PSK_IDENTITY", 20, 114},
+  #endif
+  #ifdef SSL_R_BAD_RECORD_TYPE
+    {"BAD_RECORD_TYPE", ERR_LIB_SSL, SSL_R_BAD_RECORD_TYPE},
+  #else
+    {"BAD_RECORD_TYPE", 20, 443},
+  #endif
+  #ifdef SSL_R_BAD_RSA_ENCRYPT
+    {"BAD_RSA_ENCRYPT", ERR_LIB_SSL, SSL_R_BAD_RSA_ENCRYPT},
+  #else
+    {"BAD_RSA_ENCRYPT", 20, 119},
+  #endif
+  #ifdef SSL_R_BAD_SIGNATURE
+    {"BAD_SIGNATURE", ERR_LIB_SSL, SSL_R_BAD_SIGNATURE},
+  #else
+    {"BAD_SIGNATURE", 20, 123},
+  #endif
+  #ifdef SSL_R_BAD_SRP_A_LENGTH
+    {"BAD_SRP_A_LENGTH", ERR_LIB_SSL, SSL_R_BAD_SRP_A_LENGTH},
+  #else
+    {"BAD_SRP_A_LENGTH", 20, 347},
+  #endif
+  #ifdef SSL_R_BAD_SRP_PARAMETERS
+    {"BAD_SRP_PARAMETERS", ERR_LIB_SSL, SSL_R_BAD_SRP_PARAMETERS},
+  #else
+    {"BAD_SRP_PARAMETERS", 20, 371},
+  #endif
+  #ifdef SSL_R_BAD_SRTP_MKI_VALUE
+    {"BAD_SRTP_MKI_VALUE", ERR_LIB_SSL, SSL_R_BAD_SRTP_MKI_VALUE},
+  #else
+    {"BAD_SRTP_MKI_VALUE", 20, 352},
+  #endif
+  #ifdef SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST
+    {"BAD_SRTP_PROTECTION_PROFILE_LIST", ERR_LIB_SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST},
+  #else
+    {"BAD_SRTP_PROTECTION_PROFILE_LIST", 20, 353},
+  #endif
+  #ifdef SSL_R_BAD_SSL_FILETYPE
+    {"BAD_SSL_FILETYPE", ERR_LIB_SSL, SSL_R_BAD_SSL_FILETYPE},
+  #else
+    {"BAD_SSL_FILETYPE", 20, 124},
+  #endif
+  #ifdef SSL_R_BAD_VALUE
+    {"BAD_VALUE", ERR_LIB_SSL, SSL_R_BAD_VALUE},
+  #else
+    {"BAD_VALUE", 20, 384},
+  #endif
+  #ifdef SSL_R_BAD_WRITE_RETRY
+    {"BAD_WRITE_RETRY", ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY},
+  #else
+    {"BAD_WRITE_RETRY", 20, 127},
+  #endif
+  #ifdef SSL_R_BINDER_DOES_NOT_VERIFY
+    {"BINDER_DOES_NOT_VERIFY", ERR_LIB_SSL, SSL_R_BINDER_DOES_NOT_VERIFY},
+  #else
+    {"BINDER_DOES_NOT_VERIFY", 20, 253},
+  #endif
+  #ifdef SSL_R_BIO_NOT_SET
+    {"BIO_NOT_SET", ERR_LIB_SSL, SSL_R_BIO_NOT_SET},
+  #else
+    {"BIO_NOT_SET", 20, 128},
+  #endif
+  #ifdef SSL_R_BLOCK_CIPHER_PAD_IS_WRONG
+    {"BLOCK_CIPHER_PAD_IS_WRONG", ERR_LIB_SSL, SSL_R_BLOCK_CIPHER_PAD_IS_WRONG},
+  #else
+    {"BLOCK_CIPHER_PAD_IS_WRONG", 20, 129},
+  #endif
+  #ifdef SSL_R_BN_LIB
+    {"BN_LIB", ERR_LIB_SSL, SSL_R_BN_LIB},
+  #else
+    {"BN_LIB", 20, 130},
+  #endif
+  #ifdef SSL_R_CALLBACK_FAILED
+    {"CALLBACK_FAILED", ERR_LIB_SSL, SSL_R_CALLBACK_FAILED},
+  #else
+    {"CALLBACK_FAILED", 20, 234},
+  #endif
+  #ifdef SSL_R_CANNOT_CHANGE_CIPHER
+    {"CANNOT_CHANGE_CIPHER", ERR_LIB_SSL, SSL_R_CANNOT_CHANGE_CIPHER},
+  #else
+    {"CANNOT_CHANGE_CIPHER", 20, 109},
+  #endif
+  #ifdef SSL_R_CANNOT_GET_GROUP_NAME
+    {"CANNOT_GET_GROUP_NAME", ERR_LIB_SSL, SSL_R_CANNOT_GET_GROUP_NAME},
+  #else
+    {"CANNOT_GET_GROUP_NAME", 20, 299},
+  #endif
+  #ifdef SSL_R_CA_DN_LENGTH_MISMATCH
+    {"CA_DN_LENGTH_MISMATCH", ERR_LIB_SSL, SSL_R_CA_DN_LENGTH_MISMATCH},
+  #else
+    {"CA_DN_LENGTH_MISMATCH", 20, 131},
+  #endif
+  #ifdef SSL_R_CA_KEY_TOO_SMALL
+    {"CA_KEY_TOO_SMALL", ERR_LIB_SSL, SSL_R_CA_KEY_TOO_SMALL},
+  #else
+    {"CA_KEY_TOO_SMALL", 20, 397},
+  #endif
+  #ifdef SSL_R_CA_MD_TOO_WEAK
+    {"CA_MD_TOO_WEAK", ERR_LIB_SSL, SSL_R_CA_MD_TOO_WEAK},
+  #else
+    {"CA_MD_TOO_WEAK", 20, 398},
+  #endif
+  #ifdef SSL_R_CCS_RECEIVED_EARLY
+    {"CCS_RECEIVED_EARLY", ERR_LIB_SSL, SSL_R_CCS_RECEIVED_EARLY},
+  #else
+    {"CCS_RECEIVED_EARLY", 20, 133},
+  #endif
+  #ifdef SSL_R_CERTIFICATE_VERIFY_FAILED
+    {"CERTIFICATE_VERIFY_FAILED", ERR_LIB_SSL, SSL_R_CERTIFICATE_VERIFY_FAILED},
+  #else
+    {"CERTIFICATE_VERIFY_FAILED", 20, 134},
+  #endif
+  #ifdef SSL_R_CERT_CB_ERROR
+    {"CERT_CB_ERROR", ERR_LIB_SSL, SSL_R_CERT_CB_ERROR},
+  #else
+    {"CERT_CB_ERROR", 20, 377},
+  #endif
+  #ifdef SSL_R_CERT_LENGTH_MISMATCH
+    {"CERT_LENGTH_MISMATCH", ERR_LIB_SSL, SSL_R_CERT_LENGTH_MISMATCH},
+  #else
+    {"CERT_LENGTH_MISMATCH", 20, 135},
+  #endif
+  #ifdef SSL_R_CIPHERSUITE_DIGEST_HAS_CHANGED
+    {"CIPHERSUITE_DIGEST_HAS_CHANGED", ERR_LIB_SSL, SSL_R_CIPHERSUITE_DIGEST_HAS_CHANGED},
+  #else
+    {"CIPHERSUITE_DIGEST_HAS_CHANGED", 20, 218},
+  #endif
+  #ifdef SSL_R_CIPHER_CODE_WRONG_LENGTH
+    {"CIPHER_CODE_WRONG_LENGTH", ERR_LIB_SSL, SSL_R_CIPHER_CODE_WRONG_LENGTH},
+  #else
+    {"CIPHER_CODE_WRONG_LENGTH", 20, 137},
+  #endif
+  #ifdef SSL_R_CLIENTHELLO_TLSEXT
+    {"CLIENTHELLO_TLSEXT", ERR_LIB_SSL, SSL_R_CLIENTHELLO_TLSEXT},
+  #else
+    {"CLIENTHELLO_TLSEXT", 20, 226},
+  #endif
+  #ifdef SSL_R_COMPRESSED_LENGTH_TOO_LONG
+    {"COMPRESSED_LENGTH_TOO_LONG", ERR_LIB_SSL, SSL_R_COMPRESSED_LENGTH_TOO_LONG},
+  #else
+    {"COMPRESSED_LENGTH_TOO_LONG", 20, 140},
+  #endif
+  #ifdef SSL_R_COMPRESSION_DISABLED
+    {"COMPRESSION_DISABLED", ERR_LIB_SSL, SSL_R_COMPRESSION_DISABLED},
+  #else
+    {"COMPRESSION_DISABLED", 20, 343},
+  #endif
+  #ifdef SSL_R_COMPRESSION_FAILURE
+    {"COMPRESSION_FAILURE", ERR_LIB_SSL, SSL_R_COMPRESSION_FAILURE},
+  #else
+    {"COMPRESSION_FAILURE", 20, 141},
+  #endif
+  #ifdef SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
+    {"COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE", ERR_LIB_SSL, SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE},
+  #else
+    {"COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE", 20, 307},
+  #endif
+  #ifdef SSL_R_COMPRESSION_LIBRARY_ERROR
+    {"COMPRESSION_LIBRARY_ERROR", ERR_LIB_SSL, SSL_R_COMPRESSION_LIBRARY_ERROR},
+  #else
+    {"COMPRESSION_LIBRARY_ERROR", 20, 142},
+  #endif
+  #ifdef SSL_R_CONNECTION_TYPE_NOT_SET
+    {"CONNECTION_TYPE_NOT_SET", ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET},
+  #else
+    {"CONNECTION_TYPE_NOT_SET", 20, 144},
+  #endif
+  #ifdef SSL_R_CONTEXT_NOT_DANE_ENABLED
+    {"CONTEXT_NOT_DANE_ENABLED", ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED},
+  #else
+    {"CONTEXT_NOT_DANE_ENABLED", 20, 167},
+  #endif
+  #ifdef SSL_R_COOKIE_GEN_CALLBACK_FAILURE
+    {"COOKIE_GEN_CALLBACK_FAILURE", ERR_LIB_SSL, SSL_R_COOKIE_GEN_CALLBACK_FAILURE},
+  #else
+    {"COOKIE_GEN_CALLBACK_FAILURE", 20, 400},
+  #endif
+  #ifdef SSL_R_COOKIE_MISMATCH
+    {"COOKIE_MISMATCH", ERR_LIB_SSL, SSL_R_COOKIE_MISMATCH},
+  #else
+    {"COOKIE_MISMATCH", 20, 308},
+  #endif
+  #ifdef SSL_R_COPY_PARAMETERS_FAILED
+    {"COPY_PARAMETERS_FAILED", ERR_LIB_SSL, SSL_R_COPY_PARAMETERS_FAILED},
+  #else
+    {"COPY_PARAMETERS_FAILED", 20, 296},
+  #endif
+  #ifdef SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
+    {"CUSTOM_EXT_HANDLER_ALREADY_INSTALLED", ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED},
+  #else
+    {"CUSTOM_EXT_HANDLER_ALREADY_INSTALLED", 20, 206},
+  #endif
+  #ifdef SSL_R_DANE_ALREADY_ENABLED
+    {"DANE_ALREADY_ENABLED", ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED},
+  #else
+    {"DANE_ALREADY_ENABLED", 20, 172},
+  #endif
+  #ifdef SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
+    {"DANE_CANNOT_OVERRIDE_MTYPE_FULL", ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL},
+  #else
+    {"DANE_CANNOT_OVERRIDE_MTYPE_FULL", 20, 173},
+  #endif
+  #ifdef SSL_R_DANE_NOT_ENABLED
+    {"DANE_NOT_ENABLED", ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED},
+  #else
+    {"DANE_NOT_ENABLED", 20, 175},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_CERTIFICATE
+    {"DANE_TLSA_BAD_CERTIFICATE", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE},
+  #else
+    {"DANE_TLSA_BAD_CERTIFICATE", 20, 180},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
+    {"DANE_TLSA_BAD_CERTIFICATE_USAGE", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE},
+  #else
+    {"DANE_TLSA_BAD_CERTIFICATE_USAGE", 20, 184},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_DATA_LENGTH
+    {"DANE_TLSA_BAD_DATA_LENGTH", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH},
+  #else
+    {"DANE_TLSA_BAD_DATA_LENGTH", 20, 189},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
+    {"DANE_TLSA_BAD_DIGEST_LENGTH", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH},
+  #else
+    {"DANE_TLSA_BAD_DIGEST_LENGTH", 20, 192},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
+    {"DANE_TLSA_BAD_MATCHING_TYPE", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE},
+  #else
+    {"DANE_TLSA_BAD_MATCHING_TYPE", 20, 200},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
+    {"DANE_TLSA_BAD_PUBLIC_KEY", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY},
+  #else
+    {"DANE_TLSA_BAD_PUBLIC_KEY", 20, 201},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_BAD_SELECTOR
+    {"DANE_TLSA_BAD_SELECTOR", ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR},
+  #else
+    {"DANE_TLSA_BAD_SELECTOR", 20, 202},
+  #endif
+  #ifdef SSL_R_DANE_TLSA_NULL_DATA
+    {"DANE_TLSA_NULL_DATA", ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA},
+  #else
+    {"DANE_TLSA_NULL_DATA", 20, 203},
+  #endif
+  #ifdef SSL_R_DATA_BETWEEN_CCS_AND_FINISHED
+    {"DATA_BETWEEN_CCS_AND_FINISHED", ERR_LIB_SSL, SSL_R_DATA_BETWEEN_CCS_AND_FINISHED},
+  #else
+    {"DATA_BETWEEN_CCS_AND_FINISHED", 20, 145},
+  #endif
+  #ifdef SSL_R_DATA_LENGTH_TOO_LONG
+    {"DATA_LENGTH_TOO_LONG", ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG},
+  #else
+    {"DATA_LENGTH_TOO_LONG", 20, 146},
+  #endif
+  #ifdef SSL_R_DECRYPTION_FAILED
+    {"DECRYPTION_FAILED", ERR_LIB_SSL, SSL_R_DECRYPTION_FAILED},
+  #else
+    {"DECRYPTION_FAILED", 20, 147},
+  #endif
+  #ifdef SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC
+    {"DECRYPTION_FAILED_OR_BAD_RECORD_MAC", ERR_LIB_SSL, SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC},
+  #else
+    {"DECRYPTION_FAILED_OR_BAD_RECORD_MAC", 20, 281},
+  #endif
+  #ifdef SSL_R_DH_KEY_TOO_SMALL
+    {"DH_KEY_TOO_SMALL", ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL},
+  #else
+    {"DH_KEY_TOO_SMALL", 20, 394},
+  #endif
+  #ifdef SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG
+    {"DH_PUBLIC_VALUE_LENGTH_IS_WRONG", ERR_LIB_SSL, SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG},
+  #else
+    {"DH_PUBLIC_VALUE_LENGTH_IS_WRONG", 20, 148},
+  #endif
+  #ifdef SSL_R_DIGEST_CHECK_FAILED
+    {"DIGEST_CHECK_FAILED", ERR_LIB_SSL, SSL_R_DIGEST_CHECK_FAILED},
+  #else
+    {"DIGEST_CHECK_FAILED", 20, 149},
+  #endif
+  #ifdef SSL_R_DTLS_MESSAGE_TOO_BIG
+    {"DTLS_MESSAGE_TOO_BIG", ERR_LIB_SSL, SSL_R_DTLS_MESSAGE_TOO_BIG},
+  #else
+    {"DTLS_MESSAGE_TOO_BIG", 20, 334},
+  #endif
+  #ifdef SSL_R_DUPLICATE_COMPRESSION_ID
+    {"DUPLICATE_COMPRESSION_ID", ERR_LIB_SSL, SSL_R_DUPLICATE_COMPRESSION_ID},
+  #else
+    {"DUPLICATE_COMPRESSION_ID", 20, 309},
+  #endif
+  #ifdef SSL_R_ECC_CERT_NOT_FOR_SIGNING
+    {"ECC_CERT_NOT_FOR_SIGNING", ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING},
+  #else
+    {"ECC_CERT_NOT_FOR_SIGNING", 20, 318},
+  #endif
+  #ifdef SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
+    {"ECDH_REQUIRED_FOR_SUITEB_MODE", ERR_LIB_SSL, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE},
+  #else
+    {"ECDH_REQUIRED_FOR_SUITEB_MODE", 20, 374},
+  #endif
+  #ifdef SSL_R_EE_KEY_TOO_SMALL
+    {"EE_KEY_TOO_SMALL", ERR_LIB_SSL, SSL_R_EE_KEY_TOO_SMALL},
+  #else
+    {"EE_KEY_TOO_SMALL", 20, 399},
+  #endif
+  #ifdef SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST
+    {"EMPTY_SRTP_PROTECTION_PROFILE_LIST", ERR_LIB_SSL, SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST},
+  #else
+    {"EMPTY_SRTP_PROTECTION_PROFILE_LIST", 20, 354},
+  #endif
+  #ifdef SSL_R_ENCRYPTED_LENGTH_TOO_LONG
+    {"ENCRYPTED_LENGTH_TOO_LONG", ERR_LIB_SSL, SSL_R_ENCRYPTED_LENGTH_TOO_LONG},
+  #else
+    {"ENCRYPTED_LENGTH_TOO_LONG", 20, 150},
+  #endif
+  #ifdef SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
+    {"ERROR_IN_RECEIVED_CIPHER_LIST", ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST},
+  #else
+    {"ERROR_IN_RECEIVED_CIPHER_LIST", 20, 151},
+  #endif
+  #ifdef SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
+    {"ERROR_SETTING_TLSA_BASE_DOMAIN", ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN},
+  #else
+    {"ERROR_SETTING_TLSA_BASE_DOMAIN", 20, 204},
+  #endif
+  #ifdef SSL_R_EXCEEDS_MAX_FRAGMENT_SIZE
+    {"EXCEEDS_MAX_FRAGMENT_SIZE", ERR_LIB_SSL, SSL_R_EXCEEDS_MAX_FRAGMENT_SIZE},
+  #else
+    {"EXCEEDS_MAX_FRAGMENT_SIZE", 20, 194},
+  #endif
+  #ifdef SSL_R_EXCESSIVE_MESSAGE_SIZE
+    {"EXCESSIVE_MESSAGE_SIZE", ERR_LIB_SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE},
+  #else
+    {"EXCESSIVE_MESSAGE_SIZE", 20, 152},
+  #endif
+  #ifdef SSL_R_EXTENSION_NOT_RECEIVED
+    {"EXTENSION_NOT_RECEIVED", ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED},
+  #else
+    {"EXTENSION_NOT_RECEIVED", 20, 279},
+  #endif
+  #ifdef SSL_R_EXTRA_DATA_IN_MESSAGE
+    {"EXTRA_DATA_IN_MESSAGE", ERR_LIB_SSL, SSL_R_EXTRA_DATA_IN_MESSAGE},
+  #else
+    {"EXTRA_DATA_IN_MESSAGE", 20, 153},
+  #endif
+  #ifdef SSL_R_EXT_LENGTH_MISMATCH
+    {"EXT_LENGTH_MISMATCH", ERR_LIB_SSL, SSL_R_EXT_LENGTH_MISMATCH},
+  #else
+    {"EXT_LENGTH_MISMATCH", 20, 163},
+  #endif
+  #ifdef SSL_R_FAILED_TO_INIT_ASYNC
+    {"FAILED_TO_INIT_ASYNC", ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC},
+  #else
+    {"FAILED_TO_INIT_ASYNC", 20, 405},
+  #endif
+  #ifdef SSL_R_FRAGMENTED_CLIENT_HELLO
+    {"FRAGMENTED_CLIENT_HELLO", ERR_LIB_SSL, SSL_R_FRAGMENTED_CLIENT_HELLO},
+  #else
+    {"FRAGMENTED_CLIENT_HELLO", 20, 401},
+  #endif
+  #ifdef SSL_R_GOT_A_FIN_BEFORE_A_CCS
+    {"GOT_A_FIN_BEFORE_A_CCS", ERR_LIB_SSL, SSL_R_GOT_A_FIN_BEFORE_A_CCS},
+  #else
+    {"GOT_A_FIN_BEFORE_A_CCS", 20, 154},
+  #endif
+  #ifdef SSL_R_HTTPS_PROXY_REQUEST
+    {"HTTPS_PROXY_REQUEST", ERR_LIB_SSL, SSL_R_HTTPS_PROXY_REQUEST},
+  #else
+    {"HTTPS_PROXY_REQUEST", 20, 155},
+  #endif
+  #ifdef SSL_R_HTTP_REQUEST
+    {"HTTP_REQUEST", ERR_LIB_SSL, SSL_R_HTTP_REQUEST},
+  #else
+    {"HTTP_REQUEST", 20, 156},
+  #endif
+  #ifdef SSL_R_ILLEGAL_POINT_COMPRESSION
+    {"ILLEGAL_POINT_COMPRESSION", ERR_LIB_SSL, SSL_R_ILLEGAL_POINT_COMPRESSION},
+  #else
+    {"ILLEGAL_POINT_COMPRESSION", 20, 162},
+  #endif
+  #ifdef SSL_R_ILLEGAL_SUITEB_DIGEST
+    {"ILLEGAL_SUITEB_DIGEST", ERR_LIB_SSL, SSL_R_ILLEGAL_SUITEB_DIGEST},
+  #else
+    {"ILLEGAL_SUITEB_DIGEST", 20, 380},
+  #endif
+  #ifdef SSL_R_INAPPROPRIATE_FALLBACK
+    {"INAPPROPRIATE_FALLBACK", ERR_LIB_SSL, SSL_R_INAPPROPRIATE_FALLBACK},
+  #else
+    {"INAPPROPRIATE_FALLBACK", 20, 373},
+  #endif
+  #ifdef SSL_R_INCONSISTENT_COMPRESSION
+    {"INCONSISTENT_COMPRESSION", ERR_LIB_SSL, SSL_R_INCONSISTENT_COMPRESSION},
+  #else
+    {"INCONSISTENT_COMPRESSION", 20, 340},
+  #endif
+  #ifdef SSL_R_INCONSISTENT_EARLY_DATA_ALPN
+    {"INCONSISTENT_EARLY_DATA_ALPN", ERR_LIB_SSL, SSL_R_INCONSISTENT_EARLY_DATA_ALPN},
+  #else
+    {"INCONSISTENT_EARLY_DATA_ALPN", 20, 222},
+  #endif
+  #ifdef SSL_R_INCONSISTENT_EARLY_DATA_SNI
+    {"INCONSISTENT_EARLY_DATA_SNI", ERR_LIB_SSL, SSL_R_INCONSISTENT_EARLY_DATA_SNI},
+  #else
+    {"INCONSISTENT_EARLY_DATA_SNI", 20, 231},
+  #endif
+  #ifdef SSL_R_INCONSISTENT_EXTMS
+    {"INCONSISTENT_EXTMS", ERR_LIB_SSL, SSL_R_INCONSISTENT_EXTMS},
+  #else
+    {"INCONSISTENT_EXTMS", 20, 104},
+  #endif
+  #ifdef SSL_R_INSUFFICIENT_SECURITY
+    {"INSUFFICIENT_SECURITY", ERR_LIB_SSL, SSL_R_INSUFFICIENT_SECURITY},
+  #else
+    {"INSUFFICIENT_SECURITY", 20, 241},
+  #endif
+  #ifdef SSL_R_INVALID_ALERT
+    {"INVALID_ALERT", ERR_LIB_SSL, SSL_R_INVALID_ALERT},
+  #else
+    {"INVALID_ALERT", 20, 205},
+  #endif
+  #ifdef SSL_R_INVALID_CCS_MESSAGE
+    {"INVALID_CCS_MESSAGE", ERR_LIB_SSL, SSL_R_INVALID_CCS_MESSAGE},
+  #else
+    {"INVALID_CCS_MESSAGE", 20, 260},
+  #endif
+  #ifdef SSL_R_INVALID_CERTIFICATE_OR_ALG
+    {"INVALID_CERTIFICATE_OR_ALG", ERR_LIB_SSL, SSL_R_INVALID_CERTIFICATE_OR_ALG},
+  #else
+    {"INVALID_CERTIFICATE_OR_ALG", 20, 238},
+  #endif
+  #ifdef SSL_R_INVALID_COMMAND
+    {"INVALID_COMMAND", ERR_LIB_SSL, SSL_R_INVALID_COMMAND},
+  #else
+    {"INVALID_COMMAND", 20, 280},
+  #endif
+  #ifdef SSL_R_INVALID_COMPRESSION_ALGORITHM
+    {"INVALID_COMPRESSION_ALGORITHM", ERR_LIB_SSL, SSL_R_INVALID_COMPRESSION_ALGORITHM},
+  #else
+    {"INVALID_COMPRESSION_ALGORITHM", 20, 341},
+  #endif
+  #ifdef SSL_R_INVALID_CONFIG
+    {"INVALID_CONFIG", ERR_LIB_SSL, SSL_R_INVALID_CONFIG},
+  #else
+    {"INVALID_CONFIG", 20, 283},
+  #endif
+  #ifdef SSL_R_INVALID_CONFIGURATION_NAME
+    {"INVALID_CONFIGURATION_NAME", ERR_LIB_SSL, SSL_R_INVALID_CONFIGURATION_NAME},
+  #else
+    {"INVALID_CONFIGURATION_NAME", 20, 113},
+  #endif
+  #ifdef SSL_R_INVALID_CONTEXT
+    {"INVALID_CONTEXT", ERR_LIB_SSL, SSL_R_INVALID_CONTEXT},
+  #else
+    {"INVALID_CONTEXT", 20, 282},
+  #endif
+  #ifdef SSL_R_INVALID_CT_VALIDATION_TYPE
+    {"INVALID_CT_VALIDATION_TYPE", ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE},
+  #else
+    {"INVALID_CT_VALIDATION_TYPE", 20, 212},
+  #endif
+  #ifdef SSL_R_INVALID_KEY_UPDATE_TYPE
+    {"INVALID_KEY_UPDATE_TYPE", ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE},
+  #else
+    {"INVALID_KEY_UPDATE_TYPE", 20, 120},
+  #endif
+  #ifdef SSL_R_INVALID_MAX_EARLY_DATA
+    {"INVALID_MAX_EARLY_DATA", ERR_LIB_SSL, SSL_R_INVALID_MAX_EARLY_DATA},
+  #else
+    {"INVALID_MAX_EARLY_DATA", 20, 174},
+  #endif
+  #ifdef SSL_R_INVALID_NULL_CMD_NAME
+    {"INVALID_NULL_CMD_NAME", ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME},
+  #else
+    {"INVALID_NULL_CMD_NAME", 20, 385},
+  #endif
+  #ifdef SSL_R_INVALID_SEQUENCE_NUMBER
+    {"INVALID_SEQUENCE_NUMBER", ERR_LIB_SSL, SSL_R_INVALID_SEQUENCE_NUMBER},
+  #else
+    {"INVALID_SEQUENCE_NUMBER", 20, 402},
+  #endif
+  #ifdef SSL_R_INVALID_SERVERINFO_DATA
+    {"INVALID_SERVERINFO_DATA", ERR_LIB_SSL, SSL_R_INVALID_SERVERINFO_DATA},
+  #else
+    {"INVALID_SERVERINFO_DATA", 20, 388},
+  #endif
+  #ifdef SSL_R_INVALID_SESSION_ID
+    {"INVALID_SESSION_ID", ERR_LIB_SSL, SSL_R_INVALID_SESSION_ID},
+  #else
+    {"INVALID_SESSION_ID", 20, 999},
+  #endif
+  #ifdef SSL_R_INVALID_SRP_USERNAME
+    {"INVALID_SRP_USERNAME", ERR_LIB_SSL, SSL_R_INVALID_SRP_USERNAME},
+  #else
+    {"INVALID_SRP_USERNAME", 20, 357},
+  #endif
+  #ifdef SSL_R_INVALID_STATUS_RESPONSE
+    {"INVALID_STATUS_RESPONSE", ERR_LIB_SSL, SSL_R_INVALID_STATUS_RESPONSE},
+  #else
+    {"INVALID_STATUS_RESPONSE", 20, 328},
+  #endif
+  #ifdef SSL_R_INVALID_TICKET_KEYS_LENGTH
+    {"INVALID_TICKET_KEYS_LENGTH", ERR_LIB_SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH},
+  #else
+    {"INVALID_TICKET_KEYS_LENGTH", 20, 325},
+  #endif
+  #ifdef SSL_R_LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED
+    {"LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED", ERR_LIB_SSL, SSL_R_LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED},
+  #else
+    {"LEGACY_SIGALG_DISALLOWED_OR_UNSUPPORTED", 20, 333},
+  #endif
+  #ifdef SSL_R_LENGTH_MISMATCH
+    {"LENGTH_MISMATCH", ERR_LIB_SSL, SSL_R_LENGTH_MISMATCH},
+  #else
+    {"LENGTH_MISMATCH", 20, 159},
+  #endif
+  #ifdef SSL_R_LENGTH_TOO_LONG
+    {"LENGTH_TOO_LONG", ERR_LIB_SSL, SSL_R_LENGTH_TOO_LONG},
+  #else
+    {"LENGTH_TOO_LONG", 20, 404},
+  #endif
+  #ifdef SSL_R_LENGTH_TOO_SHORT
+    {"LENGTH_TOO_SHORT", ERR_LIB_SSL, SSL_R_LENGTH_TOO_SHORT},
+  #else
+    {"LENGTH_TOO_SHORT", 20, 160},
+  #endif
+  #ifdef SSL_R_LIBRARY_BUG
+    {"LIBRARY_BUG", ERR_LIB_SSL, SSL_R_LIBRARY_BUG},
+  #else
+    {"LIBRARY_BUG", 20, 274},
+  #endif
+  #ifdef SSL_R_LIBRARY_HAS_NO_CIPHERS
+    {"LIBRARY_HAS_NO_CIPHERS", ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS},
+  #else
+    {"LIBRARY_HAS_NO_CIPHERS", 20, 161},
+  #endif
+  #ifdef SSL_R_MISSING_DSA_SIGNING_CERT
+    {"MISSING_DSA_SIGNING_CERT", ERR_LIB_SSL, SSL_R_MISSING_DSA_SIGNING_CERT},
+  #else
+    {"MISSING_DSA_SIGNING_CERT", 20, 165},
+  #endif
+  #ifdef SSL_R_MISSING_ECDSA_SIGNING_CERT
+    {"MISSING_ECDSA_SIGNING_CERT", ERR_LIB_SSL, SSL_R_MISSING_ECDSA_SIGNING_CERT},
+  #else
+    {"MISSING_ECDSA_SIGNING_CERT", 20, 381},
+  #endif
+  #ifdef SSL_R_MISSING_FATAL
+    {"MISSING_FATAL", ERR_LIB_SSL, SSL_R_MISSING_FATAL},
+  #else
+    {"MISSING_FATAL", 20, 256},
+  #endif
+  #ifdef SSL_R_MISSING_PARAMETERS
+    {"MISSING_PARAMETERS", ERR_LIB_SSL, SSL_R_MISSING_PARAMETERS},
+  #else
+    {"MISSING_PARAMETERS", 20, 290},
+  #endif
+  #ifdef SSL_R_MISSING_PSK_KEX_MODES_EXTENSION
+    {"MISSING_PSK_KEX_MODES_EXTENSION", ERR_LIB_SSL, SSL_R_MISSING_PSK_KEX_MODES_EXTENSION},
+  #else
+    {"MISSING_PSK_KEX_MODES_EXTENSION", 20, 310},
+  #endif
+  #ifdef SSL_R_MISSING_RSA_CERTIFICATE
+    {"MISSING_RSA_CERTIFICATE", ERR_LIB_SSL, SSL_R_MISSING_RSA_CERTIFICATE},
+  #else
+    {"MISSING_RSA_CERTIFICATE", 20, 168},
+  #endif
+  #ifdef SSL_R_MISSING_RSA_ENCRYPTING_CERT
+    {"MISSING_RSA_ENCRYPTING_CERT", ERR_LIB_SSL, SSL_R_MISSING_RSA_ENCRYPTING_CERT},
+  #else
+    {"MISSING_RSA_ENCRYPTING_CERT", 20, 169},
+  #endif
+  #ifdef SSL_R_MISSING_RSA_SIGNING_CERT
+    {"MISSING_RSA_SIGNING_CERT", ERR_LIB_SSL, SSL_R_MISSING_RSA_SIGNING_CERT},
+  #else
+    {"MISSING_RSA_SIGNING_CERT", 20, 170},
+  #endif
+  #ifdef SSL_R_MISSING_SIGALGS_EXTENSION
+    {"MISSING_SIGALGS_EXTENSION", ERR_LIB_SSL, SSL_R_MISSING_SIGALGS_EXTENSION},
+  #else
+    {"MISSING_SIGALGS_EXTENSION", 20, 112},
+  #endif
+  #ifdef SSL_R_MISSING_SIGNING_CERT
+    {"MISSING_SIGNING_CERT", ERR_LIB_SSL, SSL_R_MISSING_SIGNING_CERT},
+  #else
+    {"MISSING_SIGNING_CERT", 20, 221},
+  #endif
+  #ifdef SSL_R_MISSING_SRP_PARAM
+    {"MISSING_SRP_PARAM", ERR_LIB_SSL, SSL_R_MISSING_SRP_PARAM},
+  #else
+    {"MISSING_SRP_PARAM", 20, 358},
+  #endif
+  #ifdef SSL_R_MISSING_SUPPORTED_GROUPS_EXTENSION
+    {"MISSING_SUPPORTED_GROUPS_EXTENSION", ERR_LIB_SSL, SSL_R_MISSING_SUPPORTED_GROUPS_EXTENSION},
+  #else
+    {"MISSING_SUPPORTED_GROUPS_EXTENSION", 20, 209},
+  #endif
+  #ifdef SSL_R_MISSING_TMP_DH_KEY
+    {"MISSING_TMP_DH_KEY", ERR_LIB_SSL, SSL_R_MISSING_TMP_DH_KEY},
+  #else
+    {"MISSING_TMP_DH_KEY", 20, 171},
+  #endif
+  #ifdef SSL_R_MISSING_TMP_ECDH_KEY
+    {"MISSING_TMP_ECDH_KEY", ERR_LIB_SSL, SSL_R_MISSING_TMP_ECDH_KEY},
+  #else
+    {"MISSING_TMP_ECDH_KEY", 20, 311},
+  #endif
+  #ifdef SSL_R_MIXED_HANDSHAKE_AND_NON_HANDSHAKE_DATA
+    {"MIXED_HANDSHAKE_AND_NON_HANDSHAKE_DATA", ERR_LIB_SSL, SSL_R_MIXED_HANDSHAKE_AND_NON_HANDSHAKE_DATA},
+  #else
+    {"MIXED_HANDSHAKE_AND_NON_HANDSHAKE_DATA", 20, 293},
+  #endif
+  #ifdef SSL_R_NOT_ON_RECORD_BOUNDARY
+    {"NOT_ON_RECORD_BOUNDARY", ERR_LIB_SSL, SSL_R_NOT_ON_RECORD_BOUNDARY},
+  #else
+    {"NOT_ON_RECORD_BOUNDARY", 20, 182},
+  #endif
+  #ifdef SSL_R_NOT_REPLACING_CERTIFICATE
+    {"NOT_REPLACING_CERTIFICATE", ERR_LIB_SSL, SSL_R_NOT_REPLACING_CERTIFICATE},
+  #else
+    {"NOT_REPLACING_CERTIFICATE", 20, 289},
+  #endif
+  #ifdef SSL_R_NOT_SERVER
+    {"NOT_SERVER", ERR_LIB_SSL, SSL_R_NOT_SERVER},
+  #else
+    {"NOT_SERVER", 20, 284},
+  #endif
+  #ifdef SSL_R_NO_APPLICATION_PROTOCOL
+    {"NO_APPLICATION_PROTOCOL", ERR_LIB_SSL, SSL_R_NO_APPLICATION_PROTOCOL},
+  #else
+    {"NO_APPLICATION_PROTOCOL", 20, 235},
+  #endif
+  #ifdef SSL_R_NO_CERTIFICATES_RETURNED
+    {"NO_CERTIFICATES_RETURNED", ERR_LIB_SSL, SSL_R_NO_CERTIFICATES_RETURNED},
+  #else
+    {"NO_CERTIFICATES_RETURNED", 20, 176},
+  #endif
+  #ifdef SSL_R_NO_CERTIFICATE_ASSIGNED
+    {"NO_CERTIFICATE_ASSIGNED", ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED},
+  #else
+    {"NO_CERTIFICATE_ASSIGNED", 20, 177},
+  #endif
+  #ifdef SSL_R_NO_CERTIFICATE_SET
+    {"NO_CERTIFICATE_SET", ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_SET},
+  #else
+    {"NO_CERTIFICATE_SET", 20, 179},
+  #endif
+  #ifdef SSL_R_NO_CHANGE_FOLLOWING_HRR
+    {"NO_CHANGE_FOLLOWING_HRR", ERR_LIB_SSL, SSL_R_NO_CHANGE_FOLLOWING_HRR},
+  #else
+    {"NO_CHANGE_FOLLOWING_HRR", 20, 214},
+  #endif
+  #ifdef SSL_R_NO_CIPHERS_AVAILABLE
+    {"NO_CIPHERS_AVAILABLE", ERR_LIB_SSL, SSL_R_NO_CIPHERS_AVAILABLE},
+  #else
+    {"NO_CIPHERS_AVAILABLE", 20, 181},
+  #endif
+  #ifdef SSL_R_NO_CIPHERS_SPECIFIED
+    {"NO_CIPHERS_SPECIFIED", ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED},
+  #else
+    {"NO_CIPHERS_SPECIFIED", 20, 183},
+  #endif
+  #ifdef SSL_R_NO_CIPHER_MATCH
+    {"NO_CIPHER_MATCH", ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH},
+  #else
+    {"NO_CIPHER_MATCH", 20, 185},
+  #endif
+  #ifdef SSL_R_NO_CLIENT_CERT_METHOD
+    {"NO_CLIENT_CERT_METHOD", ERR_LIB_SSL, SSL_R_NO_CLIENT_CERT_METHOD},
+  #else
+    {"NO_CLIENT_CERT_METHOD", 20, 331},
+  #endif
+  #ifdef SSL_R_NO_COMPRESSION_SPECIFIED
+    {"NO_COMPRESSION_SPECIFIED", ERR_LIB_SSL, SSL_R_NO_COMPRESSION_SPECIFIED},
+  #else
+    {"NO_COMPRESSION_SPECIFIED", 20, 187},
+  #endif
+  #ifdef SSL_R_NO_COOKIE_CALLBACK_SET
+    {"NO_COOKIE_CALLBACK_SET", ERR_LIB_SSL, SSL_R_NO_COOKIE_CALLBACK_SET},
+  #else
+    {"NO_COOKIE_CALLBACK_SET", 20, 287},
+  #endif
+  #ifdef SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER
+    {"NO_GOST_CERTIFICATE_SENT_BY_PEER", ERR_LIB_SSL, SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER},
+  #else
+    {"NO_GOST_CERTIFICATE_SENT_BY_PEER", 20, 330},
+  #endif
+  #ifdef SSL_R_NO_METHOD_SPECIFIED
+    {"NO_METHOD_SPECIFIED", ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED},
+  #else
+    {"NO_METHOD_SPECIFIED", 20, 188},
+  #endif
+  #ifdef SSL_R_NO_PEM_EXTENSIONS
+    {"NO_PEM_EXTENSIONS", ERR_LIB_SSL, SSL_R_NO_PEM_EXTENSIONS},
+  #else
+    {"NO_PEM_EXTENSIONS", 20, 389},
+  #endif
+  #ifdef SSL_R_NO_PRIVATE_KEY_ASSIGNED
+    {"NO_PRIVATE_KEY_ASSIGNED", ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED},
+  #else
+    {"NO_PRIVATE_KEY_ASSIGNED", 20, 190},
+  #endif
+  #ifdef SSL_R_NO_PROTOCOLS_AVAILABLE
+    {"NO_PROTOCOLS_AVAILABLE", ERR_LIB_SSL, SSL_R_NO_PROTOCOLS_AVAILABLE},
+  #else
+    {"NO_PROTOCOLS_AVAILABLE", 20, 191},
+  #endif
+  #ifdef SSL_R_NO_RENEGOTIATION
+    {"NO_RENEGOTIATION", ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION},
+  #else
+    {"NO_RENEGOTIATION", 20, 339},
+  #endif
+  #ifdef SSL_R_NO_REQUIRED_DIGEST
+    {"NO_REQUIRED_DIGEST", ERR_LIB_SSL, SSL_R_NO_REQUIRED_DIGEST},
+  #else
+    {"NO_REQUIRED_DIGEST", 20, 324},
+  #endif
+  #ifdef SSL_R_NO_SHARED_CIPHER
+    {"NO_SHARED_CIPHER", ERR_LIB_SSL, SSL_R_NO_SHARED_CIPHER},
+  #else
+    {"NO_SHARED_CIPHER", 20, 193},
+  #endif
+  #ifdef SSL_R_NO_SHARED_GROUPS
+    {"NO_SHARED_GROUPS", ERR_LIB_SSL, SSL_R_NO_SHARED_GROUPS},
+  #else
+    {"NO_SHARED_GROUPS", 20, 410},
+  #endif
+  #ifdef SSL_R_NO_SHARED_SIGNATURE_ALGORITHMS
+    {"NO_SHARED_SIGNATURE_ALGORITHMS", ERR_LIB_SSL, SSL_R_NO_SHARED_SIGNATURE_ALGORITHMS},
+  #else
+    {"NO_SHARED_SIGNATURE_ALGORITHMS", 20, 376},
+  #endif
+  #ifdef SSL_R_NO_SRTP_PROFILES
+    {"NO_SRTP_PROFILES", ERR_LIB_SSL, SSL_R_NO_SRTP_PROFILES},
+  #else
+    {"NO_SRTP_PROFILES", 20, 359},
+  #endif
+  #ifdef SSL_R_NO_SUITABLE_DIGEST_ALGORITHM
+    {"NO_SUITABLE_DIGEST_ALGORITHM", ERR_LIB_SSL, SSL_R_NO_SUITABLE_DIGEST_ALGORITHM},
+  #else
+    {"NO_SUITABLE_DIGEST_ALGORITHM", 20, 297},
+  #endif
+  #ifdef SSL_R_NO_SUITABLE_GROUPS
+    {"NO_SUITABLE_GROUPS", ERR_LIB_SSL, SSL_R_NO_SUITABLE_GROUPS},
+  #else
+    {"NO_SUITABLE_GROUPS", 20, 295},
+  #endif
+  #ifdef SSL_R_NO_SUITABLE_KEY_SHARE
+    {"NO_SUITABLE_KEY_SHARE", ERR_LIB_SSL, SSL_R_NO_SUITABLE_KEY_SHARE},
+  #else
+    {"NO_SUITABLE_KEY_SHARE", 20, 101},
+  #endif
+  #ifdef SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM
+    {"NO_SUITABLE_SIGNATURE_ALGORITHM", ERR_LIB_SSL, SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM},
+  #else
+    {"NO_SUITABLE_SIGNATURE_ALGORITHM", 20, 118},
+  #endif
+  #ifdef SSL_R_NO_VALID_SCTS
+    {"NO_VALID_SCTS", ERR_LIB_SSL, SSL_R_NO_VALID_SCTS},
+  #else
+    {"NO_VALID_SCTS", 20, 216},
+  #endif
+  #ifdef SSL_R_NO_VERIFY_COOKIE_CALLBACK
+    {"NO_VERIFY_COOKIE_CALLBACK", ERR_LIB_SSL, SSL_R_NO_VERIFY_COOKIE_CALLBACK},
+  #else
+    {"NO_VERIFY_COOKIE_CALLBACK", 20, 403},
+  #endif
+  #ifdef SSL_R_NULL_SSL_CTX
+    {"NULL_SSL_CTX", ERR_LIB_SSL, SSL_R_NULL_SSL_CTX},
+  #else
+    {"NULL_SSL_CTX", 20, 195},
+  #endif
+  #ifdef SSL_R_NULL_SSL_METHOD_PASSED
+    {"NULL_SSL_METHOD_PASSED", ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED},
+  #else
+    {"NULL_SSL_METHOD_PASSED", 20, 196},
+  #endif
+  #ifdef SSL_R_OCSP_CALLBACK_FAILURE
+    {"OCSP_CALLBACK_FAILURE", ERR_LIB_SSL, SSL_R_OCSP_CALLBACK_FAILURE},
+  #else
+    {"OCSP_CALLBACK_FAILURE", 20, 305},
+  #endif
+  #ifdef SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
+    {"OLD_SESSION_CIPHER_NOT_RETURNED", ERR_LIB_SSL, SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED},
+  #else
+    {"OLD_SESSION_CIPHER_NOT_RETURNED", 20, 197},
+  #endif
+  #ifdef SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED
+    {"OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED", ERR_LIB_SSL, SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED},
+  #else
+    {"OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED", 20, 344},
+  #endif
+  #ifdef SSL_R_OVERFLOW_ERROR
+    {"OVERFLOW_ERROR", ERR_LIB_SSL, SSL_R_OVERFLOW_ERROR},
+  #else
+    {"OVERFLOW_ERROR", 20, 237},
+  #endif
+  #ifdef SSL_R_PACKET_LENGTH_TOO_LONG
+    {"PACKET_LENGTH_TOO_LONG", ERR_LIB_SSL, SSL_R_PACKET_LENGTH_TOO_LONG},
+  #else
+    {"PACKET_LENGTH_TOO_LONG", 20, 198},
+  #endif
+  #ifdef SSL_R_PARSE_TLSEXT
+    {"PARSE_TLSEXT", ERR_LIB_SSL, SSL_R_PARSE_TLSEXT},
+  #else
+    {"PARSE_TLSEXT", 20, 227},
+  #endif
+  #ifdef SSL_R_PATH_TOO_LONG
+    {"PATH_TOO_LONG", ERR_LIB_SSL, SSL_R_PATH_TOO_LONG},
+  #else
+    {"PATH_TOO_LONG", 20, 270},
+  #endif
+  #ifdef SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE
+    {"PEER_DID_NOT_RETURN_A_CERTIFICATE", ERR_LIB_SSL, SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE},
+  #else
+    {"PEER_DID_NOT_RETURN_A_CERTIFICATE", 20, 199},
+  #endif
+  #ifdef SSL_R_PEM_NAME_BAD_PREFIX
+    {"PEM_NAME_BAD_PREFIX", ERR_LIB_SSL, SSL_R_PEM_NAME_BAD_PREFIX},
+  #else
+    {"PEM_NAME_BAD_PREFIX", 20, 391},
+  #endif
+  #ifdef SSL_R_PEM_NAME_TOO_SHORT
+    {"PEM_NAME_TOO_SHORT", ERR_LIB_SSL, SSL_R_PEM_NAME_TOO_SHORT},
+  #else
+    {"PEM_NAME_TOO_SHORT", 20, 392},
+  #endif
+  #ifdef SSL_R_PIPELINE_FAILURE
+    {"PIPELINE_FAILURE", ERR_LIB_SSL, SSL_R_PIPELINE_FAILURE},
+  #else
+    {"PIPELINE_FAILURE", 20, 406},
+  #endif
+  #ifdef SSL_R_POST_HANDSHAKE_AUTH_ENCODING_ERR
+    {"POST_HANDSHAKE_AUTH_ENCODING_ERR", ERR_LIB_SSL, SSL_R_POST_HANDSHAKE_AUTH_ENCODING_ERR},
+  #else
+    {"POST_HANDSHAKE_AUTH_ENCODING_ERR", 20, 278},
+  #endif
+  #ifdef SSL_R_PRIVATE_KEY_MISMATCH
+    {"PRIVATE_KEY_MISMATCH", ERR_LIB_SSL, SSL_R_PRIVATE_KEY_MISMATCH},
+  #else
+    {"PRIVATE_KEY_MISMATCH", 20, 288},
+  #endif
+  #ifdef SSL_R_PROTOCOL_IS_SHUTDOWN
+    {"PROTOCOL_IS_SHUTDOWN", ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN},
+  #else
+    {"PROTOCOL_IS_SHUTDOWN", 20, 207},
+  #endif
+  #ifdef SSL_R_PSK_IDENTITY_NOT_FOUND
+    {"PSK_IDENTITY_NOT_FOUND", ERR_LIB_SSL, SSL_R_PSK_IDENTITY_NOT_FOUND},
+  #else
+    {"PSK_IDENTITY_NOT_FOUND", 20, 223},
+  #endif
+  #ifdef SSL_R_PSK_NO_CLIENT_CB
+    {"PSK_NO_CLIENT_CB", ERR_LIB_SSL, SSL_R_PSK_NO_CLIENT_CB},
+  #else
+    {"PSK_NO_CLIENT_CB", 20, 224},
+  #endif
+  #ifdef SSL_R_PSK_NO_SERVER_CB
+    {"PSK_NO_SERVER_CB", ERR_LIB_SSL, SSL_R_PSK_NO_SERVER_CB},
+  #else
+    {"PSK_NO_SERVER_CB", 20, 225},
+  #endif
+  #ifdef SSL_R_READ_BIO_NOT_SET
+    {"READ_BIO_NOT_SET", ERR_LIB_SSL, SSL_R_READ_BIO_NOT_SET},
+  #else
+    {"READ_BIO_NOT_SET", 20, 211},
+  #endif
+  #ifdef SSL_R_READ_TIMEOUT_EXPIRED
+    {"READ_TIMEOUT_EXPIRED", ERR_LIB_SSL, SSL_R_READ_TIMEOUT_EXPIRED},
+  #else
+    {"READ_TIMEOUT_EXPIRED", 20, 312},
+  #endif
+  #ifdef SSL_R_RECORD_LENGTH_MISMATCH
+    {"RECORD_LENGTH_MISMATCH", ERR_LIB_SSL, SSL_R_RECORD_LENGTH_MISMATCH},
+  #else
+    {"RECORD_LENGTH_MISMATCH", 20, 213},
+  #endif
+  #ifdef SSL_R_RECORD_TOO_SMALL
+    {"RECORD_TOO_SMALL", ERR_LIB_SSL, SSL_R_RECORD_TOO_SMALL},
+  #else
+    {"RECORD_TOO_SMALL", 20, 298},
+  #endif
+  #ifdef SSL_R_RENEGOTIATE_EXT_TOO_LONG
+    {"RENEGOTIATE_EXT_TOO_LONG", ERR_LIB_SSL, SSL_R_RENEGOTIATE_EXT_TOO_LONG},
+  #else
+    {"RENEGOTIATE_EXT_TOO_LONG", 20, 335},
+  #endif
+  #ifdef SSL_R_RENEGOTIATION_ENCODING_ERR
+    {"RENEGOTIATION_ENCODING_ERR", ERR_LIB_SSL, SSL_R_RENEGOTIATION_ENCODING_ERR},
+  #else
+    {"RENEGOTIATION_ENCODING_ERR", 20, 336},
+  #endif
+  #ifdef SSL_R_RENEGOTIATION_MISMATCH
+    {"RENEGOTIATION_MISMATCH", ERR_LIB_SSL, SSL_R_RENEGOTIATION_MISMATCH},
+  #else
+    {"RENEGOTIATION_MISMATCH", 20, 337},
+  #endif
+  #ifdef SSL_R_REQUEST_PENDING
+    {"REQUEST_PENDING", ERR_LIB_SSL, SSL_R_REQUEST_PENDING},
+  #else
+    {"REQUEST_PENDING", 20, 285},
+  #endif
+  #ifdef SSL_R_REQUEST_SENT
+    {"REQUEST_SENT", ERR_LIB_SSL, SSL_R_REQUEST_SENT},
+  #else
+    {"REQUEST_SENT", 20, 286},
+  #endif
+  #ifdef SSL_R_REQUIRED_CIPHER_MISSING
+    {"REQUIRED_CIPHER_MISSING", ERR_LIB_SSL, SSL_R_REQUIRED_CIPHER_MISSING},
+  #else
+    {"REQUIRED_CIPHER_MISSING", 20, 215},
+  #endif
+  #ifdef SSL_R_REQUIRED_COMPRESSION_ALGORITHM_MISSING
+    {"REQUIRED_COMPRESSION_ALGORITHM_MISSING", ERR_LIB_SSL, SSL_R_REQUIRED_COMPRESSION_ALGORITHM_MISSING},
+  #else
+    {"REQUIRED_COMPRESSION_ALGORITHM_MISSING", 20, 342},
+  #endif
+  #ifdef SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING
+    {"SCSV_RECEIVED_WHEN_RENEGOTIATING", ERR_LIB_SSL, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING},
+  #else
+    {"SCSV_RECEIVED_WHEN_RENEGOTIATING", 20, 345},
+  #endif
+  #ifdef SSL_R_SCT_VERIFICATION_FAILED
+    {"SCT_VERIFICATION_FAILED", ERR_LIB_SSL, SSL_R_SCT_VERIFICATION_FAILED},
+  #else
+    {"SCT_VERIFICATION_FAILED", 20, 208},
+  #endif
+  #ifdef SSL_R_SERVERHELLO_TLSEXT
+    {"SERVERHELLO_TLSEXT", ERR_LIB_SSL, SSL_R_SERVERHELLO_TLSEXT},
+  #else
+    {"SERVERHELLO_TLSEXT", 20, 275},
+  #endif
+  #ifdef SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED
+    {"SESSION_ID_CONTEXT_UNINITIALIZED", ERR_LIB_SSL, SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED},
+  #else
+    {"SESSION_ID_CONTEXT_UNINITIALIZED", 20, 277},
+  #endif
+  #ifdef SSL_R_SHUTDOWN_WHILE_IN_INIT
+    {"SHUTDOWN_WHILE_IN_INIT", ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT},
+  #else
+    {"SHUTDOWN_WHILE_IN_INIT", 20, 407},
+  #endif
+  #ifdef SSL_R_SIGNATURE_ALGORITHMS_ERROR
+    {"SIGNATURE_ALGORITHMS_ERROR", ERR_LIB_SSL, SSL_R_SIGNATURE_ALGORITHMS_ERROR},
+  #else
+    {"SIGNATURE_ALGORITHMS_ERROR", 20, 360},
+  #endif
+  #ifdef SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE
+    {"SIGNATURE_FOR_NON_SIGNING_CERTIFICATE", ERR_LIB_SSL, SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE},
+  #else
+    {"SIGNATURE_FOR_NON_SIGNING_CERTIFICATE", 20, 220},
+  #endif
+  #ifdef SSL_R_SRP_A_CALC
+    {"SRP_A_CALC", ERR_LIB_SSL, SSL_R_SRP_A_CALC},
+  #else
+    {"SRP_A_CALC", 20, 361},
+  #endif
+  #ifdef SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES
+    {"SRTP_COULD_NOT_ALLOCATE_PROFILES", ERR_LIB_SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES},
+  #else
+    {"SRTP_COULD_NOT_ALLOCATE_PROFILES", 20, 362},
+  #endif
+  #ifdef SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG
+    {"SRTP_PROTECTION_PROFILE_LIST_TOO_LONG", ERR_LIB_SSL, SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG},
+  #else
+    {"SRTP_PROTECTION_PROFILE_LIST_TOO_LONG", 20, 363},
+  #endif
+  #ifdef SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE
+    {"SRTP_UNKNOWN_PROTECTION_PROFILE", ERR_LIB_SSL, SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE},
+  #else
+    {"SRTP_UNKNOWN_PROTECTION_PROFILE", 20, 364},
+  #endif
+  #ifdef SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH
+    {"SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH", ERR_LIB_SSL, SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH},
+  #else
+    {"SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH", 20, 232},
+  #endif
+  #ifdef SSL_R_SSL3_EXT_INVALID_SERVERNAME
+    {"SSL3_EXT_INVALID_SERVERNAME", ERR_LIB_SSL, SSL_R_SSL3_EXT_INVALID_SERVERNAME},
+  #else
+    {"SSL3_EXT_INVALID_SERVERNAME", 20, 319},
+  #endif
+  #ifdef SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE
+    {"SSL3_EXT_INVALID_SERVERNAME_TYPE", ERR_LIB_SSL, SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE},
+  #else
+    {"SSL3_EXT_INVALID_SERVERNAME_TYPE", 20, 320},
+  #endif
+  #ifdef SSL_R_SSL3_SESSION_ID_TOO_LONG
+    {"SSL3_SESSION_ID_TOO_LONG", ERR_LIB_SSL, SSL_R_SSL3_SESSION_ID_TOO_LONG},
+  #else
+    {"SSL3_SESSION_ID_TOO_LONG", 20, 300},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_BAD_CERTIFICATE
+    {"SSLV3_ALERT_BAD_CERTIFICATE", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_BAD_CERTIFICATE},
+  #else
+    {"SSLV3_ALERT_BAD_CERTIFICATE", 20, 1042},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_BAD_RECORD_MAC
+    {"SSLV3_ALERT_BAD_RECORD_MAC", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_BAD_RECORD_MAC},
+  #else
+    {"SSLV3_ALERT_BAD_RECORD_MAC", 20, 1020},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED
+    {"SSLV3_ALERT_CERTIFICATE_EXPIRED", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED},
+  #else
+    {"SSLV3_ALERT_CERTIFICATE_EXPIRED", 20, 1045},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED
+    {"SSLV3_ALERT_CERTIFICATE_REVOKED", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED},
+  #else
+    {"SSLV3_ALERT_CERTIFICATE_REVOKED", 20, 1044},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN
+    {"SSLV3_ALERT_CERTIFICATE_UNKNOWN", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN},
+  #else
+    {"SSLV3_ALERT_CERTIFICATE_UNKNOWN", 20, 1046},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE
+    {"SSLV3_ALERT_DECOMPRESSION_FAILURE", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE},
+  #else
+    {"SSLV3_ALERT_DECOMPRESSION_FAILURE", 20, 1030},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE
+    {"SSLV3_ALERT_HANDSHAKE_FAILURE", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE},
+  #else
+    {"SSLV3_ALERT_HANDSHAKE_FAILURE", 20, 1040},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER
+    {"SSLV3_ALERT_ILLEGAL_PARAMETER", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER},
+  #else
+    {"SSLV3_ALERT_ILLEGAL_PARAMETER", 20, 1047},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_NO_CERTIFICATE
+    {"SSLV3_ALERT_NO_CERTIFICATE", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_NO_CERTIFICATE},
+  #else
+    {"SSLV3_ALERT_NO_CERTIFICATE", 20, 1041},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE
+    {"SSLV3_ALERT_UNEXPECTED_MESSAGE", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE},
+  #else
+    {"SSLV3_ALERT_UNEXPECTED_MESSAGE", 20, 1010},
+  #endif
+  #ifdef SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE
+    {"SSLV3_ALERT_UNSUPPORTED_CERTIFICATE", ERR_LIB_SSL, SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE},
+  #else
+    {"SSLV3_ALERT_UNSUPPORTED_CERTIFICATE", 20, 1043},
+  #endif
+  #ifdef SSL_R_SSL_COMMAND_SECTION_EMPTY
+    {"SSL_COMMAND_SECTION_EMPTY", ERR_LIB_SSL, SSL_R_SSL_COMMAND_SECTION_EMPTY},
+  #else
+    {"SSL_COMMAND_SECTION_EMPTY", 20, 117},
+  #endif
+  #ifdef SSL_R_SSL_COMMAND_SECTION_NOT_FOUND
+    {"SSL_COMMAND_SECTION_NOT_FOUND", ERR_LIB_SSL, SSL_R_SSL_COMMAND_SECTION_NOT_FOUND},
+  #else
+    {"SSL_COMMAND_SECTION_NOT_FOUND", 20, 125},
+  #endif
+  #ifdef SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
+    {"SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION", ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION},
+  #else
+    {"SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION", 20, 228},
+  #endif
+  #ifdef SSL_R_SSL_HANDSHAKE_FAILURE
+    {"SSL_HANDSHAKE_FAILURE", ERR_LIB_SSL, SSL_R_SSL_HANDSHAKE_FAILURE},
+  #else
+    {"SSL_HANDSHAKE_FAILURE", 20, 229},
+  #endif
+  #ifdef SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
+    {"SSL_LIBRARY_HAS_NO_CIPHERS", ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS},
+  #else
+    {"SSL_LIBRARY_HAS_NO_CIPHERS", 20, 230},
+  #endif
+  #ifdef SSL_R_SSL_NEGATIVE_LENGTH
+    {"SSL_NEGATIVE_LENGTH", ERR_LIB_SSL, SSL_R_SSL_NEGATIVE_LENGTH},
+  #else
+    {"SSL_NEGATIVE_LENGTH", 20, 372},
+  #endif
+  #ifdef SSL_R_SSL_SECTION_EMPTY
+    {"SSL_SECTION_EMPTY", ERR_LIB_SSL, SSL_R_SSL_SECTION_EMPTY},
+  #else
+    {"SSL_SECTION_EMPTY", 20, 126},
+  #endif
+  #ifdef SSL_R_SSL_SECTION_NOT_FOUND
+    {"SSL_SECTION_NOT_FOUND", ERR_LIB_SSL, SSL_R_SSL_SECTION_NOT_FOUND},
+  #else
+    {"SSL_SECTION_NOT_FOUND", 20, 136},
+  #endif
+  #ifdef SSL_R_SSL_SESSION_ID_CALLBACK_FAILED
+    {"SSL_SESSION_ID_CALLBACK_FAILED", ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CALLBACK_FAILED},
+  #else
+    {"SSL_SESSION_ID_CALLBACK_FAILED", 20, 301},
+  #endif
+  #ifdef SSL_R_SSL_SESSION_ID_CONFLICT
+    {"SSL_SESSION_ID_CONFLICT", ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONFLICT},
+  #else
+    {"SSL_SESSION_ID_CONFLICT", 20, 302},
+  #endif
+  #ifdef SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
+    {"SSL_SESSION_ID_CONTEXT_TOO_LONG", ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG},
+  #else
+    {"SSL_SESSION_ID_CONTEXT_TOO_LONG", 20, 273},
+  #endif
+  #ifdef SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH
+    {"SSL_SESSION_ID_HAS_BAD_LENGTH", ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH},
+  #else
+    {"SSL_SESSION_ID_HAS_BAD_LENGTH", 20, 303},
+  #endif
+  #ifdef SSL_R_SSL_SESSION_ID_TOO_LONG
+    {"SSL_SESSION_ID_TOO_LONG", ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_TOO_LONG},
+  #else
+    {"SSL_SESSION_ID_TOO_LONG", 20, 408},
+  #endif
+  #ifdef SSL_R_SSL_SESSION_VERSION_MISMATCH
+    {"SSL_SESSION_VERSION_MISMATCH", ERR_LIB_SSL, SSL_R_SSL_SESSION_VERSION_MISMATCH},
+  #else
+    {"SSL_SESSION_VERSION_MISMATCH", 20, 210},
+  #endif
+  #ifdef SSL_R_STILL_IN_INIT
+    {"STILL_IN_INIT", ERR_LIB_SSL, SSL_R_STILL_IN_INIT},
+  #else
+    {"STILL_IN_INIT", 20, 121},
+  #endif
+  #ifdef SSL_R_TLSV13_ALERT_CERTIFICATE_REQUIRED
+    {"TLSV13_ALERT_CERTIFICATE_REQUIRED", ERR_LIB_SSL, SSL_R_TLSV13_ALERT_CERTIFICATE_REQUIRED},
+  #else
+    {"TLSV13_ALERT_CERTIFICATE_REQUIRED", 20, 1116},
+  #endif
+  #ifdef SSL_R_TLSV13_ALERT_MISSING_EXTENSION
+    {"TLSV13_ALERT_MISSING_EXTENSION", ERR_LIB_SSL, SSL_R_TLSV13_ALERT_MISSING_EXTENSION},
+  #else
+    {"TLSV13_ALERT_MISSING_EXTENSION", 20, 1109},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_ACCESS_DENIED
+    {"TLSV1_ALERT_ACCESS_DENIED", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_ACCESS_DENIED},
+  #else
+    {"TLSV1_ALERT_ACCESS_DENIED", 20, 1049},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_DECODE_ERROR
+    {"TLSV1_ALERT_DECODE_ERROR", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_DECODE_ERROR},
+  #else
+    {"TLSV1_ALERT_DECODE_ERROR", 20, 1050},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_DECRYPTION_FAILED
+    {"TLSV1_ALERT_DECRYPTION_FAILED", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_DECRYPTION_FAILED},
+  #else
+    {"TLSV1_ALERT_DECRYPTION_FAILED", 20, 1021},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_DECRYPT_ERROR
+    {"TLSV1_ALERT_DECRYPT_ERROR", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_DECRYPT_ERROR},
+  #else
+    {"TLSV1_ALERT_DECRYPT_ERROR", 20, 1051},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION
+    {"TLSV1_ALERT_EXPORT_RESTRICTION", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION},
+  #else
+    {"TLSV1_ALERT_EXPORT_RESTRICTION", 20, 1060},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK
+    {"TLSV1_ALERT_INAPPROPRIATE_FALLBACK", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK},
+  #else
+    {"TLSV1_ALERT_INAPPROPRIATE_FALLBACK", 20, 1086},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY
+    {"TLSV1_ALERT_INSUFFICIENT_SECURITY", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY},
+  #else
+    {"TLSV1_ALERT_INSUFFICIENT_SECURITY", 20, 1071},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_INTERNAL_ERROR
+    {"TLSV1_ALERT_INTERNAL_ERROR", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_INTERNAL_ERROR},
+  #else
+    {"TLSV1_ALERT_INTERNAL_ERROR", 20, 1080},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_NO_RENEGOTIATION
+    {"TLSV1_ALERT_NO_RENEGOTIATION", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_NO_RENEGOTIATION},
+  #else
+    {"TLSV1_ALERT_NO_RENEGOTIATION", 20, 1100},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_PROTOCOL_VERSION
+    {"TLSV1_ALERT_PROTOCOL_VERSION", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_PROTOCOL_VERSION},
+  #else
+    {"TLSV1_ALERT_PROTOCOL_VERSION", 20, 1070},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_RECORD_OVERFLOW
+    {"TLSV1_ALERT_RECORD_OVERFLOW", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_RECORD_OVERFLOW},
+  #else
+    {"TLSV1_ALERT_RECORD_OVERFLOW", 20, 1022},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_UNKNOWN_CA
+    {"TLSV1_ALERT_UNKNOWN_CA", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_UNKNOWN_CA},
+  #else
+    {"TLSV1_ALERT_UNKNOWN_CA", 20, 1048},
+  #endif
+  #ifdef SSL_R_TLSV1_ALERT_USER_CANCELLED
+    {"TLSV1_ALERT_USER_CANCELLED", ERR_LIB_SSL, SSL_R_TLSV1_ALERT_USER_CANCELLED},
+  #else
+    {"TLSV1_ALERT_USER_CANCELLED", 20, 1090},
+  #endif
+  #ifdef SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE
+    {"TLSV1_BAD_CERTIFICATE_HASH_VALUE", ERR_LIB_SSL, SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE},
+  #else
+    {"TLSV1_BAD_CERTIFICATE_HASH_VALUE", 20, 1114},
+  #endif
+  #ifdef SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE
+    {"TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE", ERR_LIB_SSL, SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE},
+  #else
+    {"TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE", 20, 1113},
+  #endif
+  #ifdef SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE
+    {"TLSV1_CERTIFICATE_UNOBTAINABLE", ERR_LIB_SSL, SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE},
+  #else
+    {"TLSV1_CERTIFICATE_UNOBTAINABLE", 20, 1111},
+  #endif
+  #ifdef SSL_R_TLSV1_UNRECOGNIZED_NAME
+    {"TLSV1_UNRECOGNIZED_NAME", ERR_LIB_SSL, SSL_R_TLSV1_UNRECOGNIZED_NAME},
+  #else
+    {"TLSV1_UNRECOGNIZED_NAME", 20, 1112},
+  #endif
+  #ifdef SSL_R_TLSV1_UNSUPPORTED_EXTENSION
+    {"TLSV1_UNSUPPORTED_EXTENSION", ERR_LIB_SSL, SSL_R_TLSV1_UNSUPPORTED_EXTENSION},
+  #else
+    {"TLSV1_UNSUPPORTED_EXTENSION", 20, 1110},
+  #endif
+  #ifdef SSL_R_TLS_ILLEGAL_EXPORTER_LABEL
+    {"TLS_ILLEGAL_EXPORTER_LABEL", ERR_LIB_SSL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL},
+  #else
+    {"TLS_ILLEGAL_EXPORTER_LABEL", 20, 367},
+  #endif
+  #ifdef SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST
+    {"TLS_INVALID_ECPOINTFORMAT_LIST", ERR_LIB_SSL, SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST},
+  #else
+    {"TLS_INVALID_ECPOINTFORMAT_LIST", 20, 157},
+  #endif
+  #ifdef SSL_R_TOO_MANY_KEY_UPDATES
+    {"TOO_MANY_KEY_UPDATES", ERR_LIB_SSL, SSL_R_TOO_MANY_KEY_UPDATES},
+  #else
+    {"TOO_MANY_KEY_UPDATES", 20, 132},
+  #endif
+  #ifdef SSL_R_TOO_MANY_WARN_ALERTS
+    {"TOO_MANY_WARN_ALERTS", ERR_LIB_SSL, SSL_R_TOO_MANY_WARN_ALERTS},
+  #else
+    {"TOO_MANY_WARN_ALERTS", 20, 409},
+  #endif
+  #ifdef SSL_R_TOO_MUCH_EARLY_DATA
+    {"TOO_MUCH_EARLY_DATA", ERR_LIB_SSL, SSL_R_TOO_MUCH_EARLY_DATA},
+  #else
+    {"TOO_MUCH_EARLY_DATA", 20, 164},
+  #endif
+  #ifdef SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
+    {"UNABLE_TO_FIND_ECDH_PARAMETERS", ERR_LIB_SSL, SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS},
+  #else
+    {"UNABLE_TO_FIND_ECDH_PARAMETERS", 20, 314},
+  #endif
+  #ifdef SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
+    {"UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS", ERR_LIB_SSL, SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS},
+  #else
+    {"UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS", 20, 239},
+  #endif
+  #ifdef SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
+    {"UNABLE_TO_LOAD_SSL3_MD5_ROUTINES", ERR_LIB_SSL, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES},
+  #else
+    {"UNABLE_TO_LOAD_SSL3_MD5_ROUTINES", 20, 242},
+  #endif
+  #ifdef SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
+    {"UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES", ERR_LIB_SSL, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES},
+  #else
+    {"UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES", 20, 243},
+  #endif
+  #ifdef SSL_R_UNEXPECTED_CCS_MESSAGE
+    {"UNEXPECTED_CCS_MESSAGE", ERR_LIB_SSL, SSL_R_UNEXPECTED_CCS_MESSAGE},
+  #else
+    {"UNEXPECTED_CCS_MESSAGE", 20, 262},
+  #endif
+  #ifdef SSL_R_UNEXPECTED_END_OF_EARLY_DATA
+    {"UNEXPECTED_END_OF_EARLY_DATA", ERR_LIB_SSL, SSL_R_UNEXPECTED_END_OF_EARLY_DATA},
+  #else
+    {"UNEXPECTED_END_OF_EARLY_DATA", 20, 178},
+  #endif
+  #ifdef SSL_R_UNEXPECTED_EOF_WHILE_READING
+    {"UNEXPECTED_EOF_WHILE_READING", ERR_LIB_SSL, SSL_R_UNEXPECTED_EOF_WHILE_READING},
+  #else
+    {"UNEXPECTED_EOF_WHILE_READING", 20, 294},
+  #endif
+  #ifdef SSL_R_UNEXPECTED_MESSAGE
+    {"UNEXPECTED_MESSAGE", ERR_LIB_SSL, SSL_R_UNEXPECTED_MESSAGE},
+  #else
+    {"UNEXPECTED_MESSAGE", 20, 244},
+  #endif
+  #ifdef SSL_R_UNEXPECTED_RECORD
+    {"UNEXPECTED_RECORD", ERR_LIB_SSL, SSL_R_UNEXPECTED_RECORD},
+  #else
+    {"UNEXPECTED_RECORD", 20, 245},
+  #endif
+  #ifdef SSL_R_UNINITIALIZED
+    {"UNINITIALIZED", ERR_LIB_SSL, SSL_R_UNINITIALIZED},
+  #else
+    {"UNINITIALIZED", 20, 276},
+  #endif
+  #ifdef SSL_R_UNKNOWN_ALERT_TYPE
+    {"UNKNOWN_ALERT_TYPE", ERR_LIB_SSL, SSL_R_UNKNOWN_ALERT_TYPE},
+  #else
+    {"UNKNOWN_ALERT_TYPE", 20, 246},
+  #endif
+  #ifdef SSL_R_UNKNOWN_CERTIFICATE_TYPE
+    {"UNKNOWN_CERTIFICATE_TYPE", ERR_LIB_SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE},
+  #else
+    {"UNKNOWN_CERTIFICATE_TYPE", 20, 247},
+  #endif
+  #ifdef SSL_R_UNKNOWN_CIPHER_RETURNED
+    {"UNKNOWN_CIPHER_RETURNED", ERR_LIB_SSL, SSL_R_UNKNOWN_CIPHER_RETURNED},
+  #else
+    {"UNKNOWN_CIPHER_RETURNED", 20, 248},
+  #endif
+  #ifdef SSL_R_UNKNOWN_CIPHER_TYPE
+    {"UNKNOWN_CIPHER_TYPE", ERR_LIB_SSL, SSL_R_UNKNOWN_CIPHER_TYPE},
+  #else
+    {"UNKNOWN_CIPHER_TYPE", 20, 249},
+  #endif
+  #ifdef SSL_R_UNKNOWN_CMD_NAME
+    {"UNKNOWN_CMD_NAME", ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME},
+  #else
+    {"UNKNOWN_CMD_NAME", 20, 386},
+  #endif
+  #ifdef SSL_R_UNKNOWN_COMMAND
+    {"UNKNOWN_COMMAND", ERR_LIB_SSL, SSL_R_UNKNOWN_COMMAND},
+  #else
+    {"UNKNOWN_COMMAND", 20, 139},
+  #endif
+  #ifdef SSL_R_UNKNOWN_DIGEST
+    {"UNKNOWN_DIGEST", ERR_LIB_SSL, SSL_R_UNKNOWN_DIGEST},
+  #else
+    {"UNKNOWN_DIGEST", 20, 368},
+  #endif
+  #ifdef SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
+    {"UNKNOWN_KEY_EXCHANGE_TYPE", ERR_LIB_SSL, SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE},
+  #else
+    {"UNKNOWN_KEY_EXCHANGE_TYPE", 20, 250},
+  #endif
+  #ifdef SSL_R_UNKNOWN_PKEY_TYPE
+    {"UNKNOWN_PKEY_TYPE", ERR_LIB_SSL, SSL_R_UNKNOWN_PKEY_TYPE},
+  #else
+    {"UNKNOWN_PKEY_TYPE", 20, 251},
+  #endif
+  #ifdef SSL_R_UNKNOWN_PROTOCOL
+    {"UNKNOWN_PROTOCOL", ERR_LIB_SSL, SSL_R_UNKNOWN_PROTOCOL},
+  #else
+    {"UNKNOWN_PROTOCOL", 20, 252},
+  #endif
+  #ifdef SSL_R_UNKNOWN_SSL_VERSION
+    {"UNKNOWN_SSL_VERSION", ERR_LIB_SSL, SSL_R_UNKNOWN_SSL_VERSION},
+  #else
+    {"UNKNOWN_SSL_VERSION", 20, 254},
+  #endif
+  #ifdef SSL_R_UNKNOWN_STATE
+    {"UNKNOWN_STATE", ERR_LIB_SSL, SSL_R_UNKNOWN_STATE},
+  #else
+    {"UNKNOWN_STATE", 20, 255},
+  #endif
+  #ifdef SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED
+    {"UNSAFE_LEGACY_RENEGOTIATION_DISABLED", ERR_LIB_SSL, SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED},
+  #else
+    {"UNSAFE_LEGACY_RENEGOTIATION_DISABLED", 20, 338},
+  #endif
+  #ifdef SSL_R_UNSOLICITED_EXTENSION
+    {"UNSOLICITED_EXTENSION", ERR_LIB_SSL, SSL_R_UNSOLICITED_EXTENSION},
+  #else
+    {"UNSOLICITED_EXTENSION", 20, 217},
+  #endif
+  #ifdef SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
+    {"UNSUPPORTED_COMPRESSION_ALGORITHM", ERR_LIB_SSL, SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM},
+  #else
+    {"UNSUPPORTED_COMPRESSION_ALGORITHM", 20, 257},
+  #endif
+  #ifdef SSL_R_UNSUPPORTED_ELLIPTIC_CURVE
+    {"UNSUPPORTED_ELLIPTIC_CURVE", ERR_LIB_SSL, SSL_R_UNSUPPORTED_ELLIPTIC_CURVE},
+  #else
+    {"UNSUPPORTED_ELLIPTIC_CURVE", 20, 315},
+  #endif
+  #ifdef SSL_R_UNSUPPORTED_PROTOCOL
+    {"UNSUPPORTED_PROTOCOL", ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL},
+  #else
+    {"UNSUPPORTED_PROTOCOL", 20, 258},
+  #endif
+  #ifdef SSL_R_UNSUPPORTED_SSL_VERSION
+    {"UNSUPPORTED_SSL_VERSION", ERR_LIB_SSL, SSL_R_UNSUPPORTED_SSL_VERSION},
+  #else
+    {"UNSUPPORTED_SSL_VERSION", 20, 259},
+  #endif
+  #ifdef SSL_R_UNSUPPORTED_STATUS_TYPE
+    {"UNSUPPORTED_STATUS_TYPE", ERR_LIB_SSL, SSL_R_UNSUPPORTED_STATUS_TYPE},
+  #else
+    {"UNSUPPORTED_STATUS_TYPE", 20, 329},
+  #endif
+  #ifdef SSL_R_USE_SRTP_NOT_NEGOTIATED
+    {"USE_SRTP_NOT_NEGOTIATED", ERR_LIB_SSL, SSL_R_USE_SRTP_NOT_NEGOTIATED},
+  #else
+    {"USE_SRTP_NOT_NEGOTIATED", 20, 369},
+  #endif
+  #ifdef SSL_R_VERSION_TOO_HIGH
+    {"VERSION_TOO_HIGH", ERR_LIB_SSL, SSL_R_VERSION_TOO_HIGH},
+  #else
+    {"VERSION_TOO_HIGH", 20, 166},
+  #endif
+  #ifdef SSL_R_VERSION_TOO_LOW
+    {"VERSION_TOO_LOW", ERR_LIB_SSL, SSL_R_VERSION_TOO_LOW},
+  #else
+    {"VERSION_TOO_LOW", 20, 396},
+  #endif
+  #ifdef SSL_R_WRONG_CERTIFICATE_TYPE
+    {"WRONG_CERTIFICATE_TYPE", ERR_LIB_SSL, SSL_R_WRONG_CERTIFICATE_TYPE},
+  #else
+    {"WRONG_CERTIFICATE_TYPE", 20, 383},
+  #endif
+  #ifdef SSL_R_WRONG_CIPHER_RETURNED
+    {"WRONG_CIPHER_RETURNED", ERR_LIB_SSL, SSL_R_WRONG_CIPHER_RETURNED},
+  #else
+    {"WRONG_CIPHER_RETURNED", 20, 261},
+  #endif
+  #ifdef SSL_R_WRONG_CURVE
+    {"WRONG_CURVE", ERR_LIB_SSL, SSL_R_WRONG_CURVE},
+  #else
+    {"WRONG_CURVE", 20, 378},
+  #endif
+  #ifdef SSL_R_WRONG_SIGNATURE_LENGTH
+    {"WRONG_SIGNATURE_LENGTH", ERR_LIB_SSL, SSL_R_WRONG_SIGNATURE_LENGTH},
+  #else
+    {"WRONG_SIGNATURE_LENGTH", 20, 264},
+  #endif
+  #ifdef SSL_R_WRONG_SIGNATURE_SIZE
+    {"WRONG_SIGNATURE_SIZE", ERR_LIB_SSL, SSL_R_WRONG_SIGNATURE_SIZE},
+  #else
+    {"WRONG_SIGNATURE_SIZE", 20, 265},
+  #endif
+  #ifdef SSL_R_WRONG_SIGNATURE_TYPE
+    {"WRONG_SIGNATURE_TYPE", ERR_LIB_SSL, SSL_R_WRONG_SIGNATURE_TYPE},
+  #else
+    {"WRONG_SIGNATURE_TYPE", 20, 370},
+  #endif
+  #ifdef SSL_R_WRONG_SSL_VERSION
+    {"WRONG_SSL_VERSION", ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION},
+  #else
+    {"WRONG_SSL_VERSION", 20, 266},
+  #endif
+  #ifdef SSL_R_WRONG_VERSION_NUMBER
+    {"WRONG_VERSION_NUMBER", ERR_LIB_SSL, SSL_R_WRONG_VERSION_NUMBER},
+  #else
+    {"WRONG_VERSION_NUMBER", 20, 267},
+  #endif
+  #ifdef SSL_R_X509_LIB
+    {"X509_LIB", ERR_LIB_SSL, SSL_R_X509_LIB},
+  #else
+    {"X509_LIB", 20, 268},
+  #endif
+  #ifdef SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
+    {"X509_VERIFICATION_SETUP_PROBLEMS", ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS},
+  #else
+    {"X509_VERIFICATION_SETUP_PROBLEMS", 20, 269},
+  #endif
+  #ifdef TS_R_BAD_PKCS7_TYPE
+    {"BAD_PKCS7_TYPE", ERR_LIB_TS, TS_R_BAD_PKCS7_TYPE},
+  #else
+    {"BAD_PKCS7_TYPE", 47, 132},
+  #endif
+  #ifdef TS_R_BAD_TYPE
+    {"BAD_TYPE", ERR_LIB_TS, TS_R_BAD_TYPE},
+  #else
+    {"BAD_TYPE", 47, 133},
+  #endif
+  #ifdef TS_R_CANNOT_LOAD_CERT
+    {"CANNOT_LOAD_CERT", ERR_LIB_TS, TS_R_CANNOT_LOAD_CERT},
+  #else
+    {"CANNOT_LOAD_CERT", 47, 137},
+  #endif
+  #ifdef TS_R_CANNOT_LOAD_KEY
+    {"CANNOT_LOAD_KEY", ERR_LIB_TS, TS_R_CANNOT_LOAD_KEY},
+  #else
+    {"CANNOT_LOAD_KEY", 47, 138},
+  #endif
+  #ifdef TS_R_CERTIFICATE_VERIFY_ERROR
+    {"CERTIFICATE_VERIFY_ERROR", ERR_LIB_TS, TS_R_CERTIFICATE_VERIFY_ERROR},
+  #else
+    {"CERTIFICATE_VERIFY_ERROR", 47, 100},
+  #endif
+  #ifdef TS_R_COULD_NOT_SET_ENGINE
+    {"COULD_NOT_SET_ENGINE", ERR_LIB_TS, TS_R_COULD_NOT_SET_ENGINE},
+  #else
+    {"COULD_NOT_SET_ENGINE", 47, 127},
+  #endif
+  #ifdef TS_R_COULD_NOT_SET_TIME
+    {"COULD_NOT_SET_TIME", ERR_LIB_TS, TS_R_COULD_NOT_SET_TIME},
+  #else
+    {"COULD_NOT_SET_TIME", 47, 115},
+  #endif
+  #ifdef TS_R_DETACHED_CONTENT
+    {"DETACHED_CONTENT", ERR_LIB_TS, TS_R_DETACHED_CONTENT},
+  #else
+    {"DETACHED_CONTENT", 47, 134},
+  #endif
+  #ifdef TS_R_ESS_ADD_SIGNING_CERT_ERROR
+    {"ESS_ADD_SIGNING_CERT_ERROR", ERR_LIB_TS, TS_R_ESS_ADD_SIGNING_CERT_ERROR},
+  #else
+    {"ESS_ADD_SIGNING_CERT_ERROR", 47, 116},
+  #endif
+  #ifdef TS_R_ESS_ADD_SIGNING_CERT_V2_ERROR
+    {"ESS_ADD_SIGNING_CERT_V2_ERROR", ERR_LIB_TS, TS_R_ESS_ADD_SIGNING_CERT_V2_ERROR},
+  #else
+    {"ESS_ADD_SIGNING_CERT_V2_ERROR", 47, 139},
+  #endif
+  #ifdef TS_R_ESS_SIGNING_CERTIFICATE_ERROR
+    {"ESS_SIGNING_CERTIFICATE_ERROR", ERR_LIB_TS, TS_R_ESS_SIGNING_CERTIFICATE_ERROR},
+  #else
+    {"ESS_SIGNING_CERTIFICATE_ERROR", 47, 101},
+  #endif
+  #ifdef TS_R_INVALID_NULL_POINTER
+    {"INVALID_NULL_POINTER", ERR_LIB_TS, TS_R_INVALID_NULL_POINTER},
+  #else
+    {"INVALID_NULL_POINTER", 47, 102},
+  #endif
+  #ifdef TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE
+    {"INVALID_SIGNER_CERTIFICATE_PURPOSE", ERR_LIB_TS, TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE},
+  #else
+    {"INVALID_SIGNER_CERTIFICATE_PURPOSE", 47, 117},
+  #endif
+  #ifdef TS_R_MESSAGE_IMPRINT_MISMATCH
+    {"MESSAGE_IMPRINT_MISMATCH", ERR_LIB_TS, TS_R_MESSAGE_IMPRINT_MISMATCH},
+  #else
+    {"MESSAGE_IMPRINT_MISMATCH", 47, 103},
+  #endif
+  #ifdef TS_R_NONCE_MISMATCH
+    {"NONCE_MISMATCH", ERR_LIB_TS, TS_R_NONCE_MISMATCH},
+  #else
+    {"NONCE_MISMATCH", 47, 104},
+  #endif
+  #ifdef TS_R_NONCE_NOT_RETURNED
+    {"NONCE_NOT_RETURNED", ERR_LIB_TS, TS_R_NONCE_NOT_RETURNED},
+  #else
+    {"NONCE_NOT_RETURNED", 47, 105},
+  #endif
+  #ifdef TS_R_NO_CONTENT
+    {"NO_CONTENT", ERR_LIB_TS, TS_R_NO_CONTENT},
+  #else
+    {"NO_CONTENT", 47, 106},
+  #endif
+  #ifdef TS_R_NO_TIME_STAMP_TOKEN
+    {"NO_TIME_STAMP_TOKEN", ERR_LIB_TS, TS_R_NO_TIME_STAMP_TOKEN},
+  #else
+    {"NO_TIME_STAMP_TOKEN", 47, 107},
+  #endif
+  #ifdef TS_R_PKCS7_ADD_SIGNATURE_ERROR
+    {"PKCS7_ADD_SIGNATURE_ERROR", ERR_LIB_TS, TS_R_PKCS7_ADD_SIGNATURE_ERROR},
+  #else
+    {"PKCS7_ADD_SIGNATURE_ERROR", 47, 118},
+  #endif
+  #ifdef TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR
+    {"PKCS7_ADD_SIGNED_ATTR_ERROR", ERR_LIB_TS, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR},
+  #else
+    {"PKCS7_ADD_SIGNED_ATTR_ERROR", 47, 119},
+  #endif
+  #ifdef TS_R_PKCS7_TO_TS_TST_INFO_FAILED
+    {"PKCS7_TO_TS_TST_INFO_FAILED", ERR_LIB_TS, TS_R_PKCS7_TO_TS_TST_INFO_FAILED},
+  #else
+    {"PKCS7_TO_TS_TST_INFO_FAILED", 47, 129},
+  #endif
+  #ifdef TS_R_POLICY_MISMATCH
+    {"POLICY_MISMATCH", ERR_LIB_TS, TS_R_POLICY_MISMATCH},
+  #else
+    {"POLICY_MISMATCH", 47, 108},
+  #endif
+  #ifdef TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", ERR_LIB_TS, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE},
+  #else
+    {"PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE", 47, 120},
+  #endif
+  #ifdef TS_R_RESPONSE_SETUP_ERROR
+    {"RESPONSE_SETUP_ERROR", ERR_LIB_TS, TS_R_RESPONSE_SETUP_ERROR},
+  #else
+    {"RESPONSE_SETUP_ERROR", 47, 121},
+  #endif
+  #ifdef TS_R_SIGNATURE_FAILURE
+    {"SIGNATURE_FAILURE", ERR_LIB_TS, TS_R_SIGNATURE_FAILURE},
+  #else
+    {"SIGNATURE_FAILURE", 47, 109},
+  #endif
+  #ifdef TS_R_THERE_MUST_BE_ONE_SIGNER
+    {"THERE_MUST_BE_ONE_SIGNER", ERR_LIB_TS, TS_R_THERE_MUST_BE_ONE_SIGNER},
+  #else
+    {"THERE_MUST_BE_ONE_SIGNER", 47, 110},
+  #endif
+  #ifdef TS_R_TIME_SYSCALL_ERROR
+    {"TIME_SYSCALL_ERROR", ERR_LIB_TS, TS_R_TIME_SYSCALL_ERROR},
+  #else
+    {"TIME_SYSCALL_ERROR", 47, 122},
+  #endif
+  #ifdef TS_R_TOKEN_NOT_PRESENT
+    {"TOKEN_NOT_PRESENT", ERR_LIB_TS, TS_R_TOKEN_NOT_PRESENT},
+  #else
+    {"TOKEN_NOT_PRESENT", 47, 130},
+  #endif
+  #ifdef TS_R_TOKEN_PRESENT
+    {"TOKEN_PRESENT", ERR_LIB_TS, TS_R_TOKEN_PRESENT},
+  #else
+    {"TOKEN_PRESENT", 47, 131},
+  #endif
+  #ifdef TS_R_TSA_NAME_MISMATCH
+    {"TSA_NAME_MISMATCH", ERR_LIB_TS, TS_R_TSA_NAME_MISMATCH},
+  #else
+    {"TSA_NAME_MISMATCH", 47, 111},
+  #endif
+  #ifdef TS_R_TSA_UNTRUSTED
+    {"TSA_UNTRUSTED", ERR_LIB_TS, TS_R_TSA_UNTRUSTED},
+  #else
+    {"TSA_UNTRUSTED", 47, 112},
+  #endif
+  #ifdef TS_R_TST_INFO_SETUP_ERROR
+    {"TST_INFO_SETUP_ERROR", ERR_LIB_TS, TS_R_TST_INFO_SETUP_ERROR},
+  #else
+    {"TST_INFO_SETUP_ERROR", 47, 123},
+  #endif
+  #ifdef TS_R_TS_DATASIGN
+    {"TS_DATASIGN", ERR_LIB_TS, TS_R_TS_DATASIGN},
+  #else
+    {"TS_DATASIGN", 47, 124},
+  #endif
+  #ifdef TS_R_UNACCEPTABLE_POLICY
+    {"UNACCEPTABLE_POLICY", ERR_LIB_TS, TS_R_UNACCEPTABLE_POLICY},
+  #else
+    {"UNACCEPTABLE_POLICY", 47, 125},
+  #endif
+  #ifdef TS_R_UNSUPPORTED_MD_ALGORITHM
+    {"UNSUPPORTED_MD_ALGORITHM", ERR_LIB_TS, TS_R_UNSUPPORTED_MD_ALGORITHM},
+  #else
+    {"UNSUPPORTED_MD_ALGORITHM", 47, 126},
+  #endif
+  #ifdef TS_R_UNSUPPORTED_VERSION
+    {"UNSUPPORTED_VERSION", ERR_LIB_TS, TS_R_UNSUPPORTED_VERSION},
+  #else
+    {"UNSUPPORTED_VERSION", 47, 113},
+  #endif
+  #ifdef TS_R_VAR_BAD_VALUE
+    {"VAR_BAD_VALUE", ERR_LIB_TS, TS_R_VAR_BAD_VALUE},
+  #else
+    {"VAR_BAD_VALUE", 47, 135},
+  #endif
+  #ifdef TS_R_VAR_LOOKUP_FAILURE
+    {"VAR_LOOKUP_FAILURE", ERR_LIB_TS, TS_R_VAR_LOOKUP_FAILURE},
+  #else
+    {"VAR_LOOKUP_FAILURE", 47, 136},
+  #endif
+  #ifdef TS_R_WRONG_CONTENT_TYPE
+    {"WRONG_CONTENT_TYPE", ERR_LIB_TS, TS_R_WRONG_CONTENT_TYPE},
+  #else
+    {"WRONG_CONTENT_TYPE", 47, 114},
+  #endif
+  #ifdef UI_R_COMMON_OK_AND_CANCEL_CHARACTERS
+    {"COMMON_OK_AND_CANCEL_CHARACTERS", ERR_LIB_UI, UI_R_COMMON_OK_AND_CANCEL_CHARACTERS},
+  #else
+    {"COMMON_OK_AND_CANCEL_CHARACTERS", 40, 104},
+  #endif
+  #ifdef UI_R_INDEX_TOO_LARGE
+    {"INDEX_TOO_LARGE", ERR_LIB_UI, UI_R_INDEX_TOO_LARGE},
+  #else
+    {"INDEX_TOO_LARGE", 40, 102},
+  #endif
+  #ifdef UI_R_INDEX_TOO_SMALL
+    {"INDEX_TOO_SMALL", ERR_LIB_UI, UI_R_INDEX_TOO_SMALL},
+  #else
+    {"INDEX_TOO_SMALL", 40, 103},
+  #endif
+  #ifdef UI_R_NO_RESULT_BUFFER
+    {"NO_RESULT_BUFFER", ERR_LIB_UI, UI_R_NO_RESULT_BUFFER},
+  #else
+    {"NO_RESULT_BUFFER", 40, 105},
+  #endif
+  #ifdef UI_R_PROCESSING_ERROR
+    {"PROCESSING_ERROR", ERR_LIB_UI, UI_R_PROCESSING_ERROR},
+  #else
+    {"PROCESSING_ERROR", 40, 107},
+  #endif
+  #ifdef UI_R_RESULT_TOO_LARGE
+    {"RESULT_TOO_LARGE", ERR_LIB_UI, UI_R_RESULT_TOO_LARGE},
+  #else
+    {"RESULT_TOO_LARGE", 40, 100},
+  #endif
+  #ifdef UI_R_RESULT_TOO_SMALL
+    {"RESULT_TOO_SMALL", ERR_LIB_UI, UI_R_RESULT_TOO_SMALL},
+  #else
+    {"RESULT_TOO_SMALL", 40, 101},
+  #endif
+  #ifdef UI_R_SYSASSIGN_ERROR
+    {"SYSASSIGN_ERROR", ERR_LIB_UI, UI_R_SYSASSIGN_ERROR},
+  #else
+    {"SYSASSIGN_ERROR", 40, 109},
+  #endif
+  #ifdef UI_R_SYSDASSGN_ERROR
+    {"SYSDASSGN_ERROR", ERR_LIB_UI, UI_R_SYSDASSGN_ERROR},
+  #else
+    {"SYSDASSGN_ERROR", 40, 110},
+  #endif
+  #ifdef UI_R_SYSQIOW_ERROR
+    {"SYSQIOW_ERROR", ERR_LIB_UI, UI_R_SYSQIOW_ERROR},
+  #else
+    {"SYSQIOW_ERROR", 40, 111},
+  #endif
+  #ifdef UI_R_UNKNOWN_CONTROL_COMMAND
+    {"UNKNOWN_CONTROL_COMMAND", ERR_LIB_UI, UI_R_UNKNOWN_CONTROL_COMMAND},
+  #else
+    {"UNKNOWN_CONTROL_COMMAND", 40, 106},
+  #endif
+  #ifdef UI_R_UNKNOWN_TTYGET_ERRNO_VALUE
+    {"UNKNOWN_TTYGET_ERRNO_VALUE", ERR_LIB_UI, UI_R_UNKNOWN_TTYGET_ERRNO_VALUE},
+  #else
+    {"UNKNOWN_TTYGET_ERRNO_VALUE", 40, 108},
+  #endif
+  #ifdef UI_R_USER_DATA_DUPLICATION_UNSUPPORTED
+    {"USER_DATA_DUPLICATION_UNSUPPORTED", ERR_LIB_UI, UI_R_USER_DATA_DUPLICATION_UNSUPPORTED},
+  #else
+    {"USER_DATA_DUPLICATION_UNSUPPORTED", 40, 112},
+  #endif
+  #ifdef X509V3_R_BAD_IP_ADDRESS
+    {"BAD_IP_ADDRESS", ERR_LIB_X509V3, X509V3_R_BAD_IP_ADDRESS},
+  #else
+    {"BAD_IP_ADDRESS", 34, 118},
+  #endif
+  #ifdef X509V3_R_BAD_OBJECT
+    {"BAD_OBJECT", ERR_LIB_X509V3, X509V3_R_BAD_OBJECT},
+  #else
+    {"BAD_OBJECT", 34, 119},
+  #endif
+  #ifdef X509V3_R_BN_DEC2BN_ERROR
+    {"BN_DEC2BN_ERROR", ERR_LIB_X509V3, X509V3_R_BN_DEC2BN_ERROR},
+  #else
+    {"BN_DEC2BN_ERROR", 34, 100},
+  #endif
+  #ifdef X509V3_R_BN_TO_ASN1_INTEGER_ERROR
+    {"BN_TO_ASN1_INTEGER_ERROR", ERR_LIB_X509V3, X509V3_R_BN_TO_ASN1_INTEGER_ERROR},
+  #else
+    {"BN_TO_ASN1_INTEGER_ERROR", 34, 101},
+  #endif
+  #ifdef X509V3_R_DIRNAME_ERROR
+    {"DIRNAME_ERROR", ERR_LIB_X509V3, X509V3_R_DIRNAME_ERROR},
+  #else
+    {"DIRNAME_ERROR", 34, 149},
+  #endif
+  #ifdef X509V3_R_DISTPOINT_ALREADY_SET
+    {"DISTPOINT_ALREADY_SET", ERR_LIB_X509V3, X509V3_R_DISTPOINT_ALREADY_SET},
+  #else
+    {"DISTPOINT_ALREADY_SET", 34, 160},
+  #endif
+  #ifdef X509V3_R_DUPLICATE_ZONE_ID
+    {"DUPLICATE_ZONE_ID", ERR_LIB_X509V3, X509V3_R_DUPLICATE_ZONE_ID},
+  #else
+    {"DUPLICATE_ZONE_ID", 34, 133},
+  #endif
+  #ifdef X509V3_R_EMPTY_KEY_USAGE
+    {"EMPTY_KEY_USAGE", ERR_LIB_X509V3, X509V3_R_EMPTY_KEY_USAGE},
+  #else
+    {"EMPTY_KEY_USAGE", 34, 169},
+  #endif
+  #ifdef X509V3_R_ERROR_CONVERTING_ZONE
+    {"ERROR_CONVERTING_ZONE", ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE},
+  #else
+    {"ERROR_CONVERTING_ZONE", 34, 131},
+  #endif
+  #ifdef X509V3_R_ERROR_CREATING_EXTENSION
+    {"ERROR_CREATING_EXTENSION", ERR_LIB_X509V3, X509V3_R_ERROR_CREATING_EXTENSION},
+  #else
+    {"ERROR_CREATING_EXTENSION", 34, 144},
+  #endif
+  #ifdef X509V3_R_ERROR_IN_EXTENSION
+    {"ERROR_IN_EXTENSION", ERR_LIB_X509V3, X509V3_R_ERROR_IN_EXTENSION},
+  #else
+    {"ERROR_IN_EXTENSION", 34, 128},
+  #endif
+  #ifdef X509V3_R_EXPECTED_A_SECTION_NAME
+    {"EXPECTED_A_SECTION_NAME", ERR_LIB_X509V3, X509V3_R_EXPECTED_A_SECTION_NAME},
+  #else
+    {"EXPECTED_A_SECTION_NAME", 34, 137},
+  #endif
+  #ifdef X509V3_R_EXTENSION_EXISTS
+    {"EXTENSION_EXISTS", ERR_LIB_X509V3, X509V3_R_EXTENSION_EXISTS},
+  #else
+    {"EXTENSION_EXISTS", 34, 145},
+  #endif
+  #ifdef X509V3_R_EXTENSION_NAME_ERROR
+    {"EXTENSION_NAME_ERROR", ERR_LIB_X509V3, X509V3_R_EXTENSION_NAME_ERROR},
+  #else
+    {"EXTENSION_NAME_ERROR", 34, 115},
+  #endif
+  #ifdef X509V3_R_EXTENSION_NOT_FOUND
+    {"EXTENSION_NOT_FOUND", ERR_LIB_X509V3, X509V3_R_EXTENSION_NOT_FOUND},
+  #else
+    {"EXTENSION_NOT_FOUND", 34, 102},
+  #endif
+  #ifdef X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED
+    {"EXTENSION_SETTING_NOT_SUPPORTED", ERR_LIB_X509V3, X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED},
+  #else
+    {"EXTENSION_SETTING_NOT_SUPPORTED", 34, 103},
+  #endif
+  #ifdef X509V3_R_EXTENSION_VALUE_ERROR
+    {"EXTENSION_VALUE_ERROR", ERR_LIB_X509V3, X509V3_R_EXTENSION_VALUE_ERROR},
+  #else
+    {"EXTENSION_VALUE_ERROR", 34, 116},
+  #endif
+  #ifdef X509V3_R_ILLEGAL_EMPTY_EXTENSION
+    {"ILLEGAL_EMPTY_EXTENSION", ERR_LIB_X509V3, X509V3_R_ILLEGAL_EMPTY_EXTENSION},
+  #else
+    {"ILLEGAL_EMPTY_EXTENSION", 34, 151},
+  #endif
+  #ifdef X509V3_R_INCORRECT_POLICY_SYNTAX_TAG
+    {"INCORRECT_POLICY_SYNTAX_TAG", ERR_LIB_X509V3, X509V3_R_INCORRECT_POLICY_SYNTAX_TAG},
+  #else
+    {"INCORRECT_POLICY_SYNTAX_TAG", 34, 152},
+  #endif
+  #ifdef X509V3_R_INVALID_ASNUMBER
+    {"INVALID_ASNUMBER", ERR_LIB_X509V3, X509V3_R_INVALID_ASNUMBER},
+  #else
+    {"INVALID_ASNUMBER", 34, 162},
+  #endif
+  #ifdef X509V3_R_INVALID_ASRANGE
+    {"INVALID_ASRANGE", ERR_LIB_X509V3, X509V3_R_INVALID_ASRANGE},
+  #else
+    {"INVALID_ASRANGE", 34, 163},
+  #endif
+  #ifdef X509V3_R_INVALID_BOOLEAN_STRING
+    {"INVALID_BOOLEAN_STRING", ERR_LIB_X509V3, X509V3_R_INVALID_BOOLEAN_STRING},
+  #else
+    {"INVALID_BOOLEAN_STRING", 34, 104},
+  #endif
+  #ifdef X509V3_R_INVALID_CERTIFICATE
+    {"INVALID_CERTIFICATE", ERR_LIB_X509V3, X509V3_R_INVALID_CERTIFICATE},
+  #else
+    {"INVALID_CERTIFICATE", 34, 158},
+  #endif
+  #ifdef X509V3_R_INVALID_EMPTY_NAME
+    {"INVALID_EMPTY_NAME", ERR_LIB_X509V3, X509V3_R_INVALID_EMPTY_NAME},
+  #else
+    {"INVALID_EMPTY_NAME", 34, 108},
+  #endif
+  #ifdef X509V3_R_INVALID_EXTENSION_STRING
+    {"INVALID_EXTENSION_STRING", ERR_LIB_X509V3, X509V3_R_INVALID_EXTENSION_STRING},
+  #else
+    {"INVALID_EXTENSION_STRING", 34, 105},
+  #endif
+  #ifdef X509V3_R_INVALID_INHERITANCE
+    {"INVALID_INHERITANCE", ERR_LIB_X509V3, X509V3_R_INVALID_INHERITANCE},
+  #else
+    {"INVALID_INHERITANCE", 34, 165},
+  #endif
+  #ifdef X509V3_R_INVALID_IPADDRESS
+    {"INVALID_IPADDRESS", ERR_LIB_X509V3, X509V3_R_INVALID_IPADDRESS},
+  #else
+    {"INVALID_IPADDRESS", 34, 166},
+  #endif
+  #ifdef X509V3_R_INVALID_MULTIPLE_RDNS
+    {"INVALID_MULTIPLE_RDNS", ERR_LIB_X509V3, X509V3_R_INVALID_MULTIPLE_RDNS},
+  #else
+    {"INVALID_MULTIPLE_RDNS", 34, 161},
+  #endif
+  #ifdef X509V3_R_INVALID_NAME
+    {"INVALID_NAME", ERR_LIB_X509V3, X509V3_R_INVALID_NAME},
+  #else
+    {"INVALID_NAME", 34, 106},
+  #endif
+  #ifdef X509V3_R_INVALID_NULL_ARGUMENT
+    {"INVALID_NULL_ARGUMENT", ERR_LIB_X509V3, X509V3_R_INVALID_NULL_ARGUMENT},
+  #else
+    {"INVALID_NULL_ARGUMENT", 34, 107},
+  #endif
+  #ifdef X509V3_R_INVALID_NULL_VALUE
+    {"INVALID_NULL_VALUE", ERR_LIB_X509V3, X509V3_R_INVALID_NULL_VALUE},
+  #else
+    {"INVALID_NULL_VALUE", 34, 109},
+  #endif
+  #ifdef X509V3_R_INVALID_NUMBER
+    {"INVALID_NUMBER", ERR_LIB_X509V3, X509V3_R_INVALID_NUMBER},
+  #else
+    {"INVALID_NUMBER", 34, 140},
+  #endif
+  #ifdef X509V3_R_INVALID_NUMBERS
+    {"INVALID_NUMBERS", ERR_LIB_X509V3, X509V3_R_INVALID_NUMBERS},
+  #else
+    {"INVALID_NUMBERS", 34, 141},
+  #endif
+  #ifdef X509V3_R_INVALID_OBJECT_IDENTIFIER
+    {"INVALID_OBJECT_IDENTIFIER", ERR_LIB_X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER},
+  #else
+    {"INVALID_OBJECT_IDENTIFIER", 34, 110},
+  #endif
+  #ifdef X509V3_R_INVALID_OPTION
+    {"INVALID_OPTION", ERR_LIB_X509V3, X509V3_R_INVALID_OPTION},
+  #else
+    {"INVALID_OPTION", 34, 138},
+  #endif
+  #ifdef X509V3_R_INVALID_POLICY_IDENTIFIER
+    {"INVALID_POLICY_IDENTIFIER", ERR_LIB_X509V3, X509V3_R_INVALID_POLICY_IDENTIFIER},
+  #else
+    {"INVALID_POLICY_IDENTIFIER", 34, 134},
+  #endif
+  #ifdef X509V3_R_INVALID_PROXY_POLICY_SETTING
+    {"INVALID_PROXY_POLICY_SETTING", ERR_LIB_X509V3, X509V3_R_INVALID_PROXY_POLICY_SETTING},
+  #else
+    {"INVALID_PROXY_POLICY_SETTING", 34, 153},
+  #endif
+  #ifdef X509V3_R_INVALID_PURPOSE
+    {"INVALID_PURPOSE", ERR_LIB_X509V3, X509V3_R_INVALID_PURPOSE},
+  #else
+    {"INVALID_PURPOSE", 34, 146},
+  #endif
+  #ifdef X509V3_R_INVALID_SAFI
+    {"INVALID_SAFI", ERR_LIB_X509V3, X509V3_R_INVALID_SAFI},
+  #else
+    {"INVALID_SAFI", 34, 164},
+  #endif
+  #ifdef X509V3_R_INVALID_SECTION
+    {"INVALID_SECTION", ERR_LIB_X509V3, X509V3_R_INVALID_SECTION},
+  #else
+    {"INVALID_SECTION", 34, 135},
+  #endif
+  #ifdef X509V3_R_INVALID_SYNTAX
+    {"INVALID_SYNTAX", ERR_LIB_X509V3, X509V3_R_INVALID_SYNTAX},
+  #else
+    {"INVALID_SYNTAX", 34, 143},
+  #endif
+  #ifdef X509V3_R_ISSUER_DECODE_ERROR
+    {"ISSUER_DECODE_ERROR", ERR_LIB_X509V3, X509V3_R_ISSUER_DECODE_ERROR},
+  #else
+    {"ISSUER_DECODE_ERROR", 34, 126},
+  #endif
+  #ifdef X509V3_R_MISSING_VALUE
+    {"MISSING_VALUE", ERR_LIB_X509V3, X509V3_R_MISSING_VALUE},
+  #else
+    {"MISSING_VALUE", 34, 124},
+  #endif
+  #ifdef X509V3_R_NEED_ORGANIZATION_AND_NUMBERS
+    {"NEED_ORGANIZATION_AND_NUMBERS", ERR_LIB_X509V3, X509V3_R_NEED_ORGANIZATION_AND_NUMBERS},
+  #else
+    {"NEED_ORGANIZATION_AND_NUMBERS", 34, 142},
+  #endif
+  #ifdef X509V3_R_NEGATIVE_PATHLEN
+    {"NEGATIVE_PATHLEN", ERR_LIB_X509V3, X509V3_R_NEGATIVE_PATHLEN},
+  #else
+    {"NEGATIVE_PATHLEN", 34, 168},
+  #endif
+  #ifdef X509V3_R_NO_CONFIG_DATABASE
+    {"NO_CONFIG_DATABASE", ERR_LIB_X509V3, X509V3_R_NO_CONFIG_DATABASE},
+  #else
+    {"NO_CONFIG_DATABASE", 34, 136},
+  #endif
+  #ifdef X509V3_R_NO_ISSUER_CERTIFICATE
+    {"NO_ISSUER_CERTIFICATE", ERR_LIB_X509V3, X509V3_R_NO_ISSUER_CERTIFICATE},
+  #else
+    {"NO_ISSUER_CERTIFICATE", 34, 121},
+  #endif
+  #ifdef X509V3_R_NO_ISSUER_DETAILS
+    {"NO_ISSUER_DETAILS", ERR_LIB_X509V3, X509V3_R_NO_ISSUER_DETAILS},
+  #else
+    {"NO_ISSUER_DETAILS", 34, 127},
+  #endif
+  #ifdef X509V3_R_NO_POLICY_IDENTIFIER
+    {"NO_POLICY_IDENTIFIER", ERR_LIB_X509V3, X509V3_R_NO_POLICY_IDENTIFIER},
+  #else
+    {"NO_POLICY_IDENTIFIER", 34, 139},
+  #endif
+  #ifdef X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED
+    {"NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED", ERR_LIB_X509V3, X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED},
+  #else
+    {"NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED", 34, 154},
+  #endif
+  #ifdef X509V3_R_NO_PUBLIC_KEY
+    {"NO_PUBLIC_KEY", ERR_LIB_X509V3, X509V3_R_NO_PUBLIC_KEY},
+  #else
+    {"NO_PUBLIC_KEY", 34, 114},
+  #endif
+  #ifdef X509V3_R_NO_SUBJECT_DETAILS
+    {"NO_SUBJECT_DETAILS", ERR_LIB_X509V3, X509V3_R_NO_SUBJECT_DETAILS},
+  #else
+    {"NO_SUBJECT_DETAILS", 34, 125},
+  #endif
+  #ifdef X509V3_R_OPERATION_NOT_DEFINED
+    {"OPERATION_NOT_DEFINED", ERR_LIB_X509V3, X509V3_R_OPERATION_NOT_DEFINED},
+  #else
+    {"OPERATION_NOT_DEFINED", 34, 148},
+  #endif
+  #ifdef X509V3_R_OTHERNAME_ERROR
+    {"OTHERNAME_ERROR", ERR_LIB_X509V3, X509V3_R_OTHERNAME_ERROR},
+  #else
+    {"OTHERNAME_ERROR", 34, 147},
+  #endif
+  #ifdef X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED
+    {"POLICY_LANGUAGE_ALREADY_DEFINED", ERR_LIB_X509V3, X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED},
+  #else
+    {"POLICY_LANGUAGE_ALREADY_DEFINED", 34, 155},
+  #endif
+  #ifdef X509V3_R_POLICY_PATH_LENGTH
+    {"POLICY_PATH_LENGTH", ERR_LIB_X509V3, X509V3_R_POLICY_PATH_LENGTH},
+  #else
+    {"POLICY_PATH_LENGTH", 34, 156},
+  #endif
+  #ifdef X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED
+    {"POLICY_PATH_LENGTH_ALREADY_DEFINED", ERR_LIB_X509V3, X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED},
+  #else
+    {"POLICY_PATH_LENGTH_ALREADY_DEFINED", 34, 157},
+  #endif
+  #ifdef X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY
+    {"POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY", ERR_LIB_X509V3, X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY},
+  #else
+    {"POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY", 34, 159},
+  #endif
+  #ifdef X509V3_R_SECTION_NOT_FOUND
+    {"SECTION_NOT_FOUND", ERR_LIB_X509V3, X509V3_R_SECTION_NOT_FOUND},
+  #else
+    {"SECTION_NOT_FOUND", 34, 150},
+  #endif
+  #ifdef X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS
+    {"UNABLE_TO_GET_ISSUER_DETAILS", ERR_LIB_X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS},
+  #else
+    {"UNABLE_TO_GET_ISSUER_DETAILS", 34, 122},
+  #endif
+  #ifdef X509V3_R_UNABLE_TO_GET_ISSUER_KEYID
+    {"UNABLE_TO_GET_ISSUER_KEYID", ERR_LIB_X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_KEYID},
+  #else
+    {"UNABLE_TO_GET_ISSUER_KEYID", 34, 123},
+  #endif
+  #ifdef X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT
+    {"UNKNOWN_BIT_STRING_ARGUMENT", ERR_LIB_X509V3, X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT},
+  #else
+    {"UNKNOWN_BIT_STRING_ARGUMENT", 34, 111},
+  #endif
+  #ifdef X509V3_R_UNKNOWN_EXTENSION
+    {"UNKNOWN_EXTENSION", ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION},
+  #else
+    {"UNKNOWN_EXTENSION", 34, 129},
+  #endif
+  #ifdef X509V3_R_UNKNOWN_EXTENSION_NAME
+    {"UNKNOWN_EXTENSION_NAME", ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION_NAME},
+  #else
+    {"UNKNOWN_EXTENSION_NAME", 34, 130},
+  #endif
+  #ifdef X509V3_R_UNKNOWN_OPTION
+    {"UNKNOWN_OPTION", ERR_LIB_X509V3, X509V3_R_UNKNOWN_OPTION},
+  #else
+    {"UNKNOWN_OPTION", 34, 120},
+  #endif
+  #ifdef X509V3_R_UNSUPPORTED_OPTION
+    {"UNSUPPORTED_OPTION", ERR_LIB_X509V3, X509V3_R_UNSUPPORTED_OPTION},
+  #else
+    {"UNSUPPORTED_OPTION", 34, 117},
+  #endif
+  #ifdef X509V3_R_UNSUPPORTED_TYPE
+    {"UNSUPPORTED_TYPE", ERR_LIB_X509V3, X509V3_R_UNSUPPORTED_TYPE},
+  #else
+    {"UNSUPPORTED_TYPE", 34, 167},
+  #endif
+  #ifdef X509V3_R_USER_TOO_LONG
+    {"USER_TOO_LONG", ERR_LIB_X509V3, X509V3_R_USER_TOO_LONG},
+  #else
+    {"USER_TOO_LONG", 34, 132},
+  #endif
+  #ifdef X509_R_AKID_MISMATCH
+    {"AKID_MISMATCH", ERR_LIB_X509, X509_R_AKID_MISMATCH},
+  #else
+    {"AKID_MISMATCH", 11, 110},
+  #endif
+  #ifdef X509_R_BAD_SELECTOR
+    {"BAD_SELECTOR", ERR_LIB_X509, X509_R_BAD_SELECTOR},
+  #else
+    {"BAD_SELECTOR", 11, 133},
+  #endif
+  #ifdef X509_R_BAD_X509_FILETYPE
+    {"BAD_X509_FILETYPE", ERR_LIB_X509, X509_R_BAD_X509_FILETYPE},
+  #else
+    {"BAD_X509_FILETYPE", 11, 100},
+  #endif
+  #ifdef X509_R_BASE64_DECODE_ERROR
+    {"BASE64_DECODE_ERROR", ERR_LIB_X509, X509_R_BASE64_DECODE_ERROR},
+  #else
+    {"BASE64_DECODE_ERROR", 11, 118},
+  #endif
+  #ifdef X509_R_CANT_CHECK_DH_KEY
+    {"CANT_CHECK_DH_KEY", ERR_LIB_X509, X509_R_CANT_CHECK_DH_KEY},
+  #else
+    {"CANT_CHECK_DH_KEY", 11, 114},
+  #endif
+  #ifdef X509_R_CERTIFICATE_VERIFICATION_FAILED
+    {"CERTIFICATE_VERIFICATION_FAILED", ERR_LIB_X509, X509_R_CERTIFICATE_VERIFICATION_FAILED},
+  #else
+    {"CERTIFICATE_VERIFICATION_FAILED", 11, 139},
+  #endif
+  #ifdef X509_R_CERT_ALREADY_IN_HASH_TABLE
+    {"CERT_ALREADY_IN_HASH_TABLE", ERR_LIB_X509, X509_R_CERT_ALREADY_IN_HASH_TABLE},
+  #else
+    {"CERT_ALREADY_IN_HASH_TABLE", 11, 101},
+  #endif
+  #ifdef X509_R_CRL_ALREADY_DELTA
+    {"CRL_ALREADY_DELTA", ERR_LIB_X509, X509_R_CRL_ALREADY_DELTA},
+  #else
+    {"CRL_ALREADY_DELTA", 11, 127},
+  #endif
+  #ifdef X509_R_CRL_VERIFY_FAILURE
+    {"CRL_VERIFY_FAILURE", ERR_LIB_X509, X509_R_CRL_VERIFY_FAILURE},
+  #else
+    {"CRL_VERIFY_FAILURE", 11, 131},
+  #endif
+  #ifdef X509_R_ERROR_GETTING_MD_BY_NID
+    {"ERROR_GETTING_MD_BY_NID", ERR_LIB_X509, X509_R_ERROR_GETTING_MD_BY_NID},
+  #else
+    {"ERROR_GETTING_MD_BY_NID", 11, 141},
+  #endif
+  #ifdef X509_R_ERROR_USING_SIGINF_SET
+    {"ERROR_USING_SIGINF_SET", ERR_LIB_X509, X509_R_ERROR_USING_SIGINF_SET},
+  #else
+    {"ERROR_USING_SIGINF_SET", 11, 142},
+  #endif
+  #ifdef X509_R_IDP_MISMATCH
+    {"IDP_MISMATCH", ERR_LIB_X509, X509_R_IDP_MISMATCH},
+  #else
+    {"IDP_MISMATCH", 11, 128},
+  #endif
+  #ifdef X509_R_INVALID_ATTRIBUTES
+    {"INVALID_ATTRIBUTES", ERR_LIB_X509, X509_R_INVALID_ATTRIBUTES},
+  #else
+    {"INVALID_ATTRIBUTES", 11, 138},
+  #endif
+  #ifdef X509_R_INVALID_DIRECTORY
+    {"INVALID_DIRECTORY", ERR_LIB_X509, X509_R_INVALID_DIRECTORY},
+  #else
+    {"INVALID_DIRECTORY", 11, 113},
+  #endif
+  #ifdef X509_R_INVALID_DISTPOINT
+    {"INVALID_DISTPOINT", ERR_LIB_X509, X509_R_INVALID_DISTPOINT},
+  #else
+    {"INVALID_DISTPOINT", 11, 143},
+  #endif
+  #ifdef X509_R_INVALID_FIELD_NAME
+    {"INVALID_FIELD_NAME", ERR_LIB_X509, X509_R_INVALID_FIELD_NAME},
+  #else
+    {"INVALID_FIELD_NAME", 11, 119},
+  #endif
+  #ifdef X509_R_INVALID_TRUST
+    {"INVALID_TRUST", ERR_LIB_X509, X509_R_INVALID_TRUST},
+  #else
+    {"INVALID_TRUST", 11, 123},
+  #endif
+  #ifdef X509_R_ISSUER_MISMATCH
+    {"ISSUER_MISMATCH", ERR_LIB_X509, X509_R_ISSUER_MISMATCH},
+  #else
+    {"ISSUER_MISMATCH", 11, 129},
+  #endif
+  #ifdef X509_R_KEY_TYPE_MISMATCH
+    {"KEY_TYPE_MISMATCH", ERR_LIB_X509, X509_R_KEY_TYPE_MISMATCH},
+  #else
+    {"KEY_TYPE_MISMATCH", 11, 115},
+  #endif
+  #ifdef X509_R_KEY_VALUES_MISMATCH
+    {"KEY_VALUES_MISMATCH", ERR_LIB_X509, X509_R_KEY_VALUES_MISMATCH},
+  #else
+    {"KEY_VALUES_MISMATCH", 11, 116},
+  #endif
+  #ifdef X509_R_LOADING_CERT_DIR
+    {"LOADING_CERT_DIR", ERR_LIB_X509, X509_R_LOADING_CERT_DIR},
+  #else
+    {"LOADING_CERT_DIR", 11, 103},
+  #endif
+  #ifdef X509_R_LOADING_DEFAULTS
+    {"LOADING_DEFAULTS", ERR_LIB_X509, X509_R_LOADING_DEFAULTS},
+  #else
+    {"LOADING_DEFAULTS", 11, 104},
+  #endif
+  #ifdef X509_R_METHOD_NOT_SUPPORTED
+    {"METHOD_NOT_SUPPORTED", ERR_LIB_X509, X509_R_METHOD_NOT_SUPPORTED},
+  #else
+    {"METHOD_NOT_SUPPORTED", 11, 124},
+  #endif
+  #ifdef X509_R_NAME_TOO_LONG
+    {"NAME_TOO_LONG", ERR_LIB_X509, X509_R_NAME_TOO_LONG},
+  #else
+    {"NAME_TOO_LONG", 11, 134},
+  #endif
+  #ifdef X509_R_NEWER_CRL_NOT_NEWER
+    {"NEWER_CRL_NOT_NEWER", ERR_LIB_X509, X509_R_NEWER_CRL_NOT_NEWER},
+  #else
+    {"NEWER_CRL_NOT_NEWER", 11, 132},
+  #endif
+  #ifdef X509_R_NO_CERTIFICATE_FOUND
+    {"NO_CERTIFICATE_FOUND", ERR_LIB_X509, X509_R_NO_CERTIFICATE_FOUND},
+  #else
+    {"NO_CERTIFICATE_FOUND", 11, 135},
+  #endif
+  #ifdef X509_R_NO_CERTIFICATE_OR_CRL_FOUND
+    {"NO_CERTIFICATE_OR_CRL_FOUND", ERR_LIB_X509, X509_R_NO_CERTIFICATE_OR_CRL_FOUND},
+  #else
+    {"NO_CERTIFICATE_OR_CRL_FOUND", 11, 136},
+  #endif
+  #ifdef X509_R_NO_CERT_SET_FOR_US_TO_VERIFY
+    {"NO_CERT_SET_FOR_US_TO_VERIFY", ERR_LIB_X509, X509_R_NO_CERT_SET_FOR_US_TO_VERIFY},
+  #else
+    {"NO_CERT_SET_FOR_US_TO_VERIFY", 11, 105},
+  #endif
+  #ifdef X509_R_NO_CRL_FOUND
+    {"NO_CRL_FOUND", ERR_LIB_X509, X509_R_NO_CRL_FOUND},
+  #else
+    {"NO_CRL_FOUND", 11, 137},
+  #endif
+  #ifdef X509_R_NO_CRL_NUMBER
+    {"NO_CRL_NUMBER", ERR_LIB_X509, X509_R_NO_CRL_NUMBER},
+  #else
+    {"NO_CRL_NUMBER", 11, 130},
+  #endif
+  #ifdef X509_R_PUBLIC_KEY_DECODE_ERROR
+    {"PUBLIC_KEY_DECODE_ERROR", ERR_LIB_X509, X509_R_PUBLIC_KEY_DECODE_ERROR},
+  #else
+    {"PUBLIC_KEY_DECODE_ERROR", 11, 125},
+  #endif
+  #ifdef X509_R_PUBLIC_KEY_ENCODE_ERROR
+    {"PUBLIC_KEY_ENCODE_ERROR", ERR_LIB_X509, X509_R_PUBLIC_KEY_ENCODE_ERROR},
+  #else
+    {"PUBLIC_KEY_ENCODE_ERROR", 11, 126},
+  #endif
+  #ifdef X509_R_SHOULD_RETRY
+    {"SHOULD_RETRY", ERR_LIB_X509, X509_R_SHOULD_RETRY},
+  #else
+    {"SHOULD_RETRY", 11, 106},
+  #endif
+  #ifdef X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN
+    {"UNABLE_TO_FIND_PARAMETERS_IN_CHAIN", ERR_LIB_X509, X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN},
+  #else
+    {"UNABLE_TO_FIND_PARAMETERS_IN_CHAIN", 11, 107},
+  #endif
+  #ifdef X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY
+    {"UNABLE_TO_GET_CERTS_PUBLIC_KEY", ERR_LIB_X509, X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY},
+  #else
+    {"UNABLE_TO_GET_CERTS_PUBLIC_KEY", 11, 108},
+  #endif
+  #ifdef X509_R_UNKNOWN_KEY_TYPE
+    {"UNKNOWN_KEY_TYPE", ERR_LIB_X509, X509_R_UNKNOWN_KEY_TYPE},
+  #else
+    {"UNKNOWN_KEY_TYPE", 11, 117},
+  #endif
+  #ifdef X509_R_UNKNOWN_NID
+    {"UNKNOWN_NID", ERR_LIB_X509, X509_R_UNKNOWN_NID},
+  #else
+    {"UNKNOWN_NID", 11, 109},
+  #endif
+  #ifdef X509_R_UNKNOWN_PURPOSE_ID
+    {"UNKNOWN_PURPOSE_ID", ERR_LIB_X509, X509_R_UNKNOWN_PURPOSE_ID},
+  #else
+    {"UNKNOWN_PURPOSE_ID", 11, 121},
+  #endif
+  #ifdef X509_R_UNKNOWN_SIGID_ALGS
+    {"UNKNOWN_SIGID_ALGS", ERR_LIB_X509, X509_R_UNKNOWN_SIGID_ALGS},
+  #else
+    {"UNKNOWN_SIGID_ALGS", 11, 144},
+  #endif
+  #ifdef X509_R_UNKNOWN_TRUST_ID
+    {"UNKNOWN_TRUST_ID", ERR_LIB_X509, X509_R_UNKNOWN_TRUST_ID},
+  #else
+    {"UNKNOWN_TRUST_ID", 11, 120},
+  #endif
+  #ifdef X509_R_UNSUPPORTED_ALGORITHM
+    {"UNSUPPORTED_ALGORITHM", ERR_LIB_X509, X509_R_UNSUPPORTED_ALGORITHM},
+  #else
+    {"UNSUPPORTED_ALGORITHM", 11, 111},
+  #endif
+  #ifdef X509_R_WRONG_LOOKUP_TYPE
+    {"WRONG_LOOKUP_TYPE", ERR_LIB_X509, X509_R_WRONG_LOOKUP_TYPE},
+  #else
+    {"WRONG_LOOKUP_TYPE", 11, 112},
+  #endif
+  #ifdef X509_R_WRONG_TYPE
+    {"WRONG_TYPE", ERR_LIB_X509, X509_R_WRONG_TYPE},
+  #else
+    {"WRONG_TYPE", 11, 122},
+  #endif
+    { NULL }
+};
+
diff --git a/Modules/_stat.c b/Modules/_stat.c
index 4218799103b59d..1ef1e97f4b7dca 100644
--- a/Modules/_stat.c
+++ b/Modules/_stat.c
@@ -11,13 +11,17 @@
  *
  */
 
-#define PY_SSIZE_T_CLEAN
-#include "Python.h"
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
 
-#ifdef __cplusplus
-extern "C" {
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.13 for PyModule_Add() on Windows
+#define Py_LIMITED_API 0x030d0000
 #endif
 
+#include "Python.h"
+
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif /* HAVE_SYS_TYPES_H */
@@ -592,17 +596,17 @@ stat_exec(PyObject *module)
     ADD_INT_MACRO(module, FILE_ATTRIBUTE_TEMPORARY);
     ADD_INT_MACRO(module, FILE_ATTRIBUTE_VIRTUAL);
 
-    if (PyModule_AddObject(module, "IO_REPARSE_TAG_SYMLINK",
-                           PyLong_FromUnsignedLong(IO_REPARSE_TAG_SYMLINK)) < 0) {
-            return -1;
+    if (PyModule_Add(module, "IO_REPARSE_TAG_SYMLINK",
+            PyLong_FromUnsignedLong(IO_REPARSE_TAG_SYMLINK)) < 0) {
+        return -1;
     }
-    if (PyModule_AddObject(module, "IO_REPARSE_TAG_MOUNT_POINT",
-                           PyLong_FromUnsignedLong(IO_REPARSE_TAG_MOUNT_POINT)) < 0) {
-            return -1;
+    if (PyModule_Add(module, "IO_REPARSE_TAG_MOUNT_POINT",
+            PyLong_FromUnsignedLong(IO_REPARSE_TAG_MOUNT_POINT)) < 0) {
+        return -1;
     }
-    if (PyModule_AddObject(module, "IO_REPARSE_TAG_APPEXECLINK",
-                           PyLong_FromUnsignedLong(IO_REPARSE_TAG_APPEXECLINK)) < 0) {
-            return -1;
+    if (PyModule_Add(module, "IO_REPARSE_TAG_APPEXECLINK",
+            PyLong_FromUnsignedLong(IO_REPARSE_TAG_APPEXECLINK)) < 0) {
+        return -1;
     }
 #endif
 
@@ -632,7 +636,3 @@ PyInit__stat(void)
 {
     return PyModuleDef_Init(&statmodule);
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Modules/_statisticsmodule.c b/Modules/_statisticsmodule.c
index 1d5465fbe6d04e..a04a2a779a5d3d 100644
--- a/Modules/_statisticsmodule.c
+++ b/Modules/_statisticsmodule.c
@@ -1,5 +1,10 @@
 /* statistics accelerator C extension: _statistics module. */
 
+// clinic/_statisticsmodule.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 #include "clinic/_statisticsmodule.c.h"
 
diff --git a/Modules/_struct.c b/Modules/_struct.c
index 4f9478bd98095d..bd16fa89f18945 100644
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -7,12 +7,12 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
+#include "pycore_bytesobject.h"   // _PyBytesWriter
+#include "pycore_long.h"          // _PyLong_AsByteArray()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "structmember.h"         // PyMemberDef
-#include <ctype.h>
+
+#include <stddef.h>               // offsetof()
 
 /*[clinic input]
 class Struct "PyStructObject *" "&PyStructType"
@@ -107,19 +107,22 @@ class cache_struct_converter(CConverter):
     type = 'PyStructObject *'
     converter = 'cache_struct_converter'
     c_default = "NULL"
+    broken_limited_capi = True
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        assert not limited_capi
+        return self.format_code("""
             if (!{converter}(module, {argname}, &{paramname})) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.name,
-                       converter=self.converter)
+            """,
+            argname=argname,
+            converter=self.converter)
 
     def cleanup(self):
         return "Py_XDECREF(%s);\n" % self.name
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=d6746621c2fb1a7d]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=c33b27d6b06006c6]*/
 
 static int cache_struct_converter(PyObject *, PyObject *, PyStructObject **);
 
@@ -1550,9 +1553,28 @@ prepare_s(PyStructObject *self)
     return -1;
 }
 
+static PyObject *
+s_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyObject *self;
+
+    assert(type != NULL);
+    allocfunc alloc_func = PyType_GetSlot(type, Py_tp_alloc);
+    assert(alloc_func != NULL);
+
+    self = alloc_func(type, 0);
+    if (self != NULL) {
+        PyStructObject *s = (PyStructObject*)self;
+        s->s_format = Py_NewRef(Py_None);
+        s->s_codes = NULL;
+        s->s_size = -1;
+        s->s_len = -1;
+    }
+    return self;
+}
+
 /*[clinic input]
-@classmethod
-Struct.__new__
+Struct.__init__
 
     format: object
 
@@ -1564,24 +1586,16 @@ the format string.
 See help(struct) for more on format strings.
 [clinic start generated code]*/
 
-static PyObject *
-Struct_impl(PyTypeObject *type, PyObject *format)
-/*[clinic end generated code: output=49468b044e334308 input=8b91868eb1df0e28]*/
+static int
+Struct___init___impl(PyStructObject *self, PyObject *format)
+/*[clinic end generated code: output=b8e80862444e92d0 input=192a4575a3dde802]*/
 {
-    allocfunc alloc = PyType_GetSlot(type, Py_tp_alloc);
-    assert(alloc != NULL);
-    PyStructObject *self = (PyStructObject *)alloc(type, 0);
-
-    if (self == NULL) {
-        return NULL;
-    }
+    int ret = 0;
 
     if (PyUnicode_Check(format)) {
         format = PyUnicode_AsASCIIString(format);
-        if (format == NULL) {
-            Py_DECREF(self);
-            return NULL;
-        }
+        if (format == NULL)
+            return -1;
     }
     else {
         Py_INCREF(format);
@@ -1589,24 +1603,19 @@ Struct_impl(PyTypeObject *type, PyObject *format)
 
     if (!PyBytes_Check(format)) {
         Py_DECREF(format);
-        Py_DECREF(self);
         PyErr_Format(PyExc_TypeError,
                      "Struct() argument 1 must be a str or bytes object, "
                      "not %.200s",
                      _PyType_Name(Py_TYPE(format)));
-        return NULL;
+        return -1;
     }
 
-    self->s_format = format;
+    Py_SETREF(self->s_format, format);
 
-    if (prepare_s(self) < 0) {
-        Py_DECREF(self);
-        return NULL;
-    }
-    return (PyObject *)self;
+    ret = prepare_s(self);
+    return ret;
 }
 
-
 static int
 s_clear(PyStructObject *s)
 {
@@ -2164,6 +2173,19 @@ s_sizeof(PyStructObject *self, void *unused)
     return PyLong_FromSize_t(size);
 }
 
+static PyObject *
+s_repr(PyStructObject *self)
+{
+    PyObject* fmt = PyUnicode_FromStringAndSize(
+        PyBytes_AS_STRING(self->s_format), PyBytes_GET_SIZE(self->s_format));
+    if (fmt == NULL) {
+        return NULL;
+    }
+    PyObject* s = PyUnicode_FromFormat("%s(%R)", _PyType_Name(Py_TYPE(self)), fmt);
+    Py_DECREF(fmt);
+    return s;
+}
+
 /* List of functions */
 
 static struct PyMethodDef s_methods[] = {
@@ -2177,13 +2199,13 @@ static struct PyMethodDef s_methods[] = {
 };
 
 static PyMemberDef s_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(PyStructObject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(PyStructObject, weakreflist), Py_READONLY},
     {NULL}  /* sentinel */
 };
 
 static PyGetSetDef s_getsetlist[] = {
-    {"format", (getter)s_get_format, (setter)NULL, "struct format string", NULL},
-    {"size", (getter)s_get_size, (setter)NULL, "struct size in bytes", NULL},
+    {"format", (getter)s_get_format, (setter)NULL, PyDoc_STR("struct format string"), NULL},
+    {"size", (getter)s_get_size, (setter)NULL, PyDoc_STR("struct size in bytes"), NULL},
     {NULL} /* sentinel */
 };
 
@@ -2196,14 +2218,16 @@ static PyType_Slot PyStructType_slots[] = {
     {Py_tp_dealloc, s_dealloc},
     {Py_tp_getattro, PyObject_GenericGetAttr},
     {Py_tp_setattro, PyObject_GenericSetAttr},
+    {Py_tp_repr, s_repr},
     {Py_tp_doc, (void*)s__doc__},
     {Py_tp_traverse, s_traverse},
     {Py_tp_clear, s_clear},
     {Py_tp_methods, s_methods},
     {Py_tp_members, s_members},
     {Py_tp_getset, s_getsetlist},
-    {Py_tp_new, Struct},
+    {Py_tp_init, Struct___init__},
     {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_new, s_new},
     {Py_tp_free, PyObject_GC_Del},
     {0, 0},
 };
@@ -2233,20 +2257,13 @@ cache_struct_converter(PyObject *module, PyObject *fmt, PyStructObject **ptr)
         return 1;
     }
 
-    if (state->cache == NULL) {
-        state->cache = PyDict_New();
-        if (state->cache == NULL)
-            return 0;
+    if (PyDict_GetItemRef(state->cache, fmt, &s_object) < 0) {
+        return 0;
     }
-
-    s_object = PyDict_GetItemWithError(state->cache, fmt);
     if (s_object != NULL) {
-        *ptr = (PyStructObject *)Py_NewRef(s_object);
+        *ptr = (PyStructObject *)s_object;
         return Py_CLEANUP_SUPPORTED;
     }
-    else if (PyErr_Occurred()) {
-        return 0;
-    }
 
     s_object = PyObject_CallOneArg(state->PyStructType, fmt);
     if (s_object != NULL) {
@@ -2271,7 +2288,7 @@ static PyObject *
 _clearcache_impl(PyObject *module)
 /*[clinic end generated code: output=ce4fb8a7bf7cb523 input=463eaae04bab3211]*/
 {
-    Py_CLEAR(get_struct_state(module)->cache);
+    PyDict_Clear(get_struct_state(module)->cache);
     Py_RETURN_NONE;
 }
 
@@ -2495,6 +2512,11 @@ _structmodule_exec(PyObject *m)
 {
     _structmodulestate *state = get_struct_state(m);
 
+    state->cache = PyDict_New();
+    if (state->cache == NULL) {
+        return -1;
+    }
+
     state->PyStructType = PyType_FromModuleAndSpec(
         m, &PyStructType_spec, NULL);
     if (state->PyStructType == NULL) {
diff --git a/Modules/_sysconfig.c b/Modules/_sysconfig.c
new file mode 100644
index 00000000000000..c76b9e6b3ebafa
--- /dev/null
+++ b/Modules/_sysconfig.c
@@ -0,0 +1,98 @@
+// _sysconfig provides data for the Python sysconfig module
+
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
+#include "Python.h"
+
+#include "pycore_importdl.h"   // _PyImport_DynLoadFiletab
+#include "pycore_long.h"       // _PyLong_GetZero, _PyLong_GetOne
+
+
+/*[clinic input]
+module _sysconfig
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=0a7c02d3e212ac97]*/
+
+#include "clinic/_sysconfig.c.h"
+
+#ifdef MS_WINDOWS
+static int
+add_string_value(PyObject *dict, const char *key, const char *str_value)
+{
+    PyObject *value = PyUnicode_FromString(str_value);
+    if (value == NULL) {
+        return -1;
+    }
+    int err = PyDict_SetItemString(dict, key, value);
+    Py_DECREF(value);
+    return err;
+}
+#endif
+
+/*[clinic input]
+_sysconfig.config_vars
+
+Returns a dictionary containing build variables intended to be exposed by sysconfig.
+[clinic start generated code]*/
+
+static PyObject *
+_sysconfig_config_vars_impl(PyObject *module)
+/*[clinic end generated code: output=9c41cdee63ea9487 input=391ff42f3af57d01]*/
+{
+    PyObject *config = PyDict_New();
+    if (config == NULL) {
+        return NULL;
+    }
+
+#ifdef MS_WINDOWS
+    if (add_string_value(config, "EXT_SUFFIX", PYD_TAGGED_SUFFIX) < 0) {
+        Py_DECREF(config);
+        return NULL;
+    }
+    if (add_string_value(config, "SOABI", PYD_SOABI) < 0) {
+        Py_DECREF(config);
+        return NULL;
+    }
+#endif
+
+#ifdef Py_GIL_DISABLED
+    PyObject *py_gil_disabled = _PyLong_GetOne();
+#else
+    PyObject *py_gil_disabled = _PyLong_GetZero();
+#endif
+    if (PyDict_SetItemString(config, "Py_GIL_DISABLED", py_gil_disabled) < 0) {
+        Py_DECREF(config);
+        return NULL;
+    }
+
+    return config;
+}
+
+PyDoc_STRVAR(sysconfig__doc__,
+"A helper for the sysconfig module.");
+
+static struct PyMethodDef sysconfig_methods[] = {
+    _SYSCONFIG_CONFIG_VARS_METHODDEF
+    {NULL, NULL}
+};
+
+static PyModuleDef_Slot sysconfig_slots[] = {
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {0, NULL}
+};
+
+static PyModuleDef sysconfig_module = {
+    .m_base = PyModuleDef_HEAD_INIT,
+    .m_name = "_sysconfig",
+    .m_doc = sysconfig__doc__,
+    .m_methods = sysconfig_methods,
+    .m_slots = sysconfig_slots,
+};
+
+PyMODINIT_FUNC
+PyInit__sysconfig(void)
+{
+    return PyModuleDef_Init(&sysconfig_module);
+}
diff --git a/Modules/_testbuffer.c b/Modules/_testbuffer.c
index 63ed4dc6ca80e1..5101834cfe1387 100644
--- a/Modules/_testbuffer.c
+++ b/Modules/_testbuffer.c
@@ -1,9 +1,6 @@
 /* C Extension module to test all aspects of PEP-3118.
    Written by Stefan Krah. */
 
-
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 
 
diff --git a/Modules/_testcapi/README.txt b/Modules/_testcapi/README.txt
index 134b6efc638095..8a65e7abf77009 100644
--- a/Modules/_testcapi/README.txt
+++ b/Modules/_testcapi/README.txt
@@ -1,3 +1,10 @@
 Tests in this directory are compiled into the _testcapi extension.
 The main file for the extension is Modules/_testcapimodule.c, which
 calls `_PyTestCapi_Init_*` from these functions.
+
+General guideline when writing test code for C API.
+* Use Argument Clinic to minimise the amount of boilerplate code.
+* Add a newline between the argument spec and the docstring.
+* If a test description is needed, make sure the added docstring clearly and succinctly describes purpose of the function.
+* DRY, use the clone feature of Argument Clinic.
+* Try to avoid adding new interned strings; reuse existing parameter names if possible. Use the `as` feature of Argument Clinic to override the C variable name, if needed.
diff --git a/Modules/_testcapi/abstract.c b/Modules/_testcapi/abstract.c
new file mode 100644
index 00000000000000..a8ba009eb6a54b
--- /dev/null
+++ b/Modules/_testcapi/abstract.c
@@ -0,0 +1,715 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyObject *
+object_repr(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyObject_Repr(arg);
+}
+
+static PyObject *
+object_ascii(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyObject_ASCII(arg);
+}
+
+static PyObject *
+object_str(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyObject_Str(arg);
+}
+
+static PyObject *
+object_bytes(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyObject_Bytes(arg);
+}
+
+static PyObject *
+object_getattr(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+    return PyObject_GetAttr(obj, attr_name);
+}
+
+static PyObject *
+object_getattrstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return PyObject_GetAttrString(obj, attr_name);
+}
+
+static PyObject *
+object_getoptionalattr(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name, *value = UNINITIALIZED_PTR;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+
+    switch (PyObject_GetOptionalAttr(obj, attr_name, &value)) {
+        case -1:
+            assert(value == NULL);
+            return NULL;
+        case 0:
+            assert(value == NULL);
+            return Py_NewRef(PyExc_AttributeError);
+        case 1:
+            return value;
+        default:
+            Py_FatalError("PyObject_GetOptionalAttr() returned invalid code");
+            Py_UNREACHABLE();
+    }
+}
+
+static PyObject *
+object_getoptionalattrstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *value = UNINITIALIZED_PTR;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+
+    switch (PyObject_GetOptionalAttrString(obj, attr_name, &value)) {
+        case -1:
+            assert(value == NULL);
+            return NULL;
+        case 0:
+            assert(value == NULL);
+            return Py_NewRef(PyExc_AttributeError);
+        case 1:
+            return value;
+        default:
+            Py_FatalError("PyObject_GetOptionalAttrString() returned invalid code");
+            Py_UNREACHABLE();
+    }
+}
+
+static PyObject *
+object_hasattr(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+    return PyLong_FromLong(PyObject_HasAttr(obj, attr_name));
+}
+
+static PyObject *
+object_hasattrstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return PyLong_FromLong(PyObject_HasAttrString(obj, attr_name));
+}
+
+static PyObject *
+object_hasattrwitherror(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+    RETURN_INT(PyObject_HasAttrWithError(obj, attr_name));
+}
+
+static PyObject *
+object_hasattrstringwitherror(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    RETURN_INT(PyObject_HasAttrStringWithError(obj, attr_name));
+}
+
+static PyObject *
+object_setattr(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name, *value;
+    if (!PyArg_ParseTuple(args, "OOO", &obj, &attr_name, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+    NULLABLE(value);
+    RETURN_INT(PyObject_SetAttr(obj, attr_name, value));
+}
+
+static PyObject *
+object_setattrstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *value;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#O", &obj, &attr_name, &size, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(value);
+    RETURN_INT(PyObject_SetAttrString(obj, attr_name, value));
+}
+
+static PyObject *
+object_delattr(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name;
+if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+    RETURN_INT(PyObject_DelAttr(obj, attr_name));
+}
+
+static PyObject *
+object_delattrstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    RETURN_INT(PyObject_DelAttrString(obj, attr_name));
+}
+
+static PyObject *
+number_check(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyBool_FromLong(PyNumber_Check(obj));
+}
+
+static PyObject *
+mapping_check(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyMapping_Check(obj));
+}
+
+static PyObject *
+mapping_size(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyMapping_Size(obj));
+}
+
+static PyObject *
+mapping_length(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyMapping_Length(obj));
+}
+
+static PyObject *
+object_getitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    return PyObject_GetItem(mapping, key);
+}
+
+static PyObject *
+mapping_getitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &mapping, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    return PyMapping_GetItemString(mapping, key);
+}
+
+static PyObject *
+mapping_getoptionalitem(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name, *value = UNINITIALIZED_PTR;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+
+    switch (PyMapping_GetOptionalItem(obj, attr_name, &value)) {
+        case -1:
+            assert(value == NULL);
+            return NULL;
+        case 0:
+            assert(value == NULL);
+            return Py_NewRef(PyExc_KeyError);
+        case 1:
+            return value;
+        default:
+            Py_FatalError("PyMapping_GetOptionalItem() returned invalid code");
+            Py_UNREACHABLE();
+    }
+}
+
+static PyObject *
+mapping_getoptionalitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *value = UNINITIALIZED_PTR;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+
+    switch (PyMapping_GetOptionalItemString(obj, attr_name, &value)) {
+        case -1:
+            assert(value == NULL);
+            return NULL;
+        case 0:
+            assert(value == NULL);
+            return Py_NewRef(PyExc_KeyError);
+        case 1:
+            return value;
+        default:
+            Py_FatalError("PyMapping_GetOptionalItemString() returned invalid code");
+            Py_UNREACHABLE();
+    }
+}
+
+static PyObject *
+mapping_haskey(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    return PyLong_FromLong(PyMapping_HasKey(mapping, key));
+}
+
+static PyObject *
+mapping_haskeystring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &mapping, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    return PyLong_FromLong(PyMapping_HasKeyString(mapping, key));
+}
+
+static PyObject *
+mapping_haskeywitherror(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    RETURN_INT(PyMapping_HasKeyWithError(mapping, key));
+}
+
+static PyObject *
+mapping_haskeystringwitherror(PyObject *self, PyObject *args)
+{
+    PyObject *mapping;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &mapping, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    RETURN_INT(PyMapping_HasKeyStringWithError(mapping, key));
+}
+
+static PyObject *
+object_setitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key, *value;
+    if (!PyArg_ParseTuple(args, "OOO", &mapping, &key, &value)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    NULLABLE(value);
+    RETURN_INT(PyObject_SetItem(mapping, key, value));
+}
+
+static PyObject *
+mapping_setitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *value;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#O", &mapping, &key, &size, &value)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(value);
+    RETURN_INT(PyMapping_SetItemString(mapping, key, value));
+}
+
+static PyObject *
+object_delitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    RETURN_INT(PyObject_DelItem(mapping, key));
+}
+
+static PyObject *
+mapping_delitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    RETURN_INT(PyMapping_DelItem(mapping, key));
+}
+
+static PyObject *
+mapping_delitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &mapping, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    RETURN_INT(PyMapping_DelItemString(mapping, key));
+}
+
+static PyObject *
+mapping_keys(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyMapping_Keys(obj);
+}
+
+static PyObject *
+mapping_values(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyMapping_Values(obj);
+}
+
+static PyObject *
+mapping_items(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyMapping_Items(obj);
+}
+
+
+static PyObject *
+sequence_check(PyObject* self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PySequence_Check(obj));
+}
+
+static PyObject *
+sequence_size(PyObject* self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PySequence_Size(obj));
+}
+
+static PyObject *
+sequence_length(PyObject* self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PySequence_Length(obj));
+}
+
+static PyObject *
+sequence_concat(PyObject *self, PyObject *args)
+{
+    PyObject *seq1, *seq2;
+    if (!PyArg_ParseTuple(args, "OO", &seq1, &seq2)) {
+        return NULL;
+    }
+    NULLABLE(seq1);
+    NULLABLE(seq2);
+
+    return PySequence_Concat(seq1, seq2);
+}
+
+static PyObject *
+sequence_repeat(PyObject *self, PyObject *args)
+{
+    PyObject *seq;
+    Py_ssize_t count;
+    if (!PyArg_ParseTuple(args, "On", &seq, &count)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+
+    return PySequence_Repeat(seq, count);
+}
+
+static PyObject *
+sequence_inplaceconcat(PyObject *self, PyObject *args)
+{
+    PyObject *seq1, *seq2;
+    if (!PyArg_ParseTuple(args, "OO", &seq1, &seq2)) {
+        return NULL;
+    }
+    NULLABLE(seq1);
+    NULLABLE(seq2);
+
+    return PySequence_InPlaceConcat(seq1, seq2);
+}
+
+static PyObject *
+sequence_inplacerepeat(PyObject *self, PyObject *args)
+{
+    PyObject *seq;
+    Py_ssize_t count;
+    if (!PyArg_ParseTuple(args, "On", &seq, &count)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+
+    return PySequence_InPlaceRepeat(seq, count);
+}
+
+static PyObject *
+sequence_getitem(PyObject *self, PyObject *args)
+{
+    PyObject *seq;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "On", &seq, &i)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+
+    return PySequence_GetItem(seq, i);
+}
+
+static PyObject *
+sequence_setitem(PyObject *self, PyObject *args)
+{
+    Py_ssize_t i;
+    PyObject *seq, *val;
+    if (!PyArg_ParseTuple(args, "OnO", &seq, &i, &val)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+    NULLABLE(val);
+
+    RETURN_INT(PySequence_SetItem(seq, i, val));
+}
+
+
+static PyObject *
+sequence_delitem(PyObject *self, PyObject *args)
+{
+    Py_ssize_t i;
+    PyObject *seq;
+    if (!PyArg_ParseTuple(args, "On", &seq, &i)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+
+    RETURN_INT(PySequence_DelItem(seq, i));
+}
+
+static PyObject *
+sequence_setslice(PyObject* self, PyObject *args)
+{
+    PyObject *sequence, *obj;
+    Py_ssize_t i1, i2;
+    if (!PyArg_ParseTuple(args, "OnnO", &sequence, &i1, &i2, &obj)) {
+        return NULL;
+    }
+    NULLABLE(sequence);
+    NULLABLE(obj);
+
+    RETURN_INT(PySequence_SetSlice(sequence, i1, i2, obj));
+}
+
+static PyObject *
+sequence_delslice(PyObject *self, PyObject *args)
+{
+    PyObject *sequence;
+    Py_ssize_t i1, i2;
+    if (!PyArg_ParseTuple(args, "Onn", &sequence, &i1, &i2)) {
+        return NULL;
+    }
+    NULLABLE(sequence);
+
+    RETURN_INT(PySequence_DelSlice(sequence, i1, i2));
+}
+
+static PyObject *
+sequence_count(PyObject *self, PyObject *args)
+{
+    PyObject *seq, *value;
+    if (!PyArg_ParseTuple(args, "OO", &seq, &value)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+    NULLABLE(value);
+
+    RETURN_SIZE(PySequence_Count(seq, value));
+}
+
+static PyObject *
+sequence_contains(PyObject *self, PyObject *args)
+{
+    PyObject *seq, *value;
+    if (!PyArg_ParseTuple(args, "OO", &seq, &value)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+    NULLABLE(value);
+
+    RETURN_INT(PySequence_Contains(seq, value));
+}
+
+static PyObject *
+sequence_index(PyObject *self, PyObject *args)
+{
+    PyObject *seq, *value;
+    if (!PyArg_ParseTuple(args, "OO", &seq, &value)) {
+        return NULL;
+    }
+    NULLABLE(seq);
+    NULLABLE(value);
+
+    RETURN_SIZE(PySequence_Index(seq, value));
+}
+
+static PyObject *
+sequence_list(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PySequence_List(obj);
+}
+
+static PyObject *
+sequence_tuple(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PySequence_Tuple(obj);
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"object_repr", object_repr, METH_O},
+    {"object_ascii", object_ascii, METH_O},
+    {"object_str", object_str, METH_O},
+    {"object_bytes", object_bytes, METH_O},
+
+    {"object_getattr", object_getattr, METH_VARARGS},
+    {"object_getattrstring", object_getattrstring, METH_VARARGS},
+    {"object_getoptionalattr", object_getoptionalattr, METH_VARARGS},
+    {"object_getoptionalattrstring", object_getoptionalattrstring, METH_VARARGS},
+    {"object_hasattr", object_hasattr, METH_VARARGS},
+    {"object_hasattrstring", object_hasattrstring, METH_VARARGS},
+    {"object_hasattrwitherror", object_hasattrwitherror, METH_VARARGS},
+    {"object_hasattrstringwitherror", object_hasattrstringwitherror, METH_VARARGS},
+    {"object_setattr", object_setattr, METH_VARARGS},
+    {"object_setattrstring", object_setattrstring, METH_VARARGS},
+    {"object_delattr", object_delattr, METH_VARARGS},
+    {"object_delattrstring", object_delattrstring, METH_VARARGS},
+
+    {"number_check", number_check, METH_O},
+    {"mapping_check", mapping_check, METH_O},
+    {"mapping_size", mapping_size, METH_O},
+    {"mapping_length", mapping_length, METH_O},
+    {"object_getitem", object_getitem, METH_VARARGS},
+    {"mapping_getitemstring", mapping_getitemstring, METH_VARARGS},
+    {"mapping_getoptionalitem", mapping_getoptionalitem, METH_VARARGS},
+    {"mapping_getoptionalitemstring", mapping_getoptionalitemstring, METH_VARARGS},
+    {"mapping_haskey", mapping_haskey, METH_VARARGS},
+    {"mapping_haskeystring", mapping_haskeystring, METH_VARARGS},
+    {"mapping_haskeywitherror", mapping_haskeywitherror, METH_VARARGS},
+    {"mapping_haskeystringwitherror", mapping_haskeystringwitherror, METH_VARARGS},
+    {"object_setitem", object_setitem, METH_VARARGS},
+    {"mapping_setitemstring", mapping_setitemstring, METH_VARARGS},
+    {"object_delitem", object_delitem, METH_VARARGS},
+    {"mapping_delitem", mapping_delitem, METH_VARARGS},
+    {"mapping_delitemstring", mapping_delitemstring, METH_VARARGS},
+    {"mapping_keys", mapping_keys, METH_O},
+    {"mapping_values", mapping_values, METH_O},
+    {"mapping_items", mapping_items, METH_O},
+
+    {"sequence_check", sequence_check, METH_O},
+    {"sequence_size", sequence_size, METH_O},
+    {"sequence_length", sequence_length, METH_O},
+    {"sequence_concat", sequence_concat, METH_VARARGS},
+    {"sequence_repeat", sequence_repeat, METH_VARARGS},
+    {"sequence_inplaceconcat", sequence_inplaceconcat, METH_VARARGS},
+    {"sequence_inplacerepeat", sequence_inplacerepeat, METH_VARARGS},
+    {"sequence_getitem", sequence_getitem, METH_VARARGS},
+    {"sequence_setitem", sequence_setitem, METH_VARARGS},
+    {"sequence_delitem", sequence_delitem, METH_VARARGS},
+    {"sequence_setslice", sequence_setslice, METH_VARARGS},
+    {"sequence_delslice", sequence_delslice, METH_VARARGS},
+    {"sequence_count", sequence_count, METH_VARARGS},
+    {"sequence_contains", sequence_contains, METH_VARARGS},
+    {"sequence_index", sequence_index, METH_VARARGS},
+    {"sequence_list", sequence_list, METH_O},
+    {"sequence_tuple", sequence_tuple, METH_O},
+
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Abstract(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/buffer.c b/Modules/_testcapi/buffer.c
index aff9a477eff57e..942774156c6c47 100644
--- a/Modules/_testcapi/buffer.c
+++ b/Modules/_testcapi/buffer.c
@@ -2,7 +2,7 @@
 
 #include "parts.h"
 
-#include "structmember.h"           // PyMemberDef
+
 #include <stddef.h>                 // offsetof
 
 typedef struct {
@@ -72,7 +72,7 @@ static PyBufferProcs testbuf_as_buffer = {
 };
 
 static struct PyMemberDef testbuf_members[] = {
-    {"references", T_PYSSIZET, offsetof(testBufObject, references), READONLY},
+    {"references", Py_T_PYSSIZET, offsetof(testBufObject, references), Py_READONLY},
     {NULL},
 };
 
diff --git a/Modules/_testcapi/bytearray.c b/Modules/_testcapi/bytearray.c
new file mode 100644
index 00000000000000..dc47ed2c306f40
--- /dev/null
+++ b/Modules/_testcapi/bytearray.c
@@ -0,0 +1,123 @@
+#include "parts.h"
+#include "util.h"
+
+
+/* Test PyByteArray_Check() */
+static PyObject *
+bytearray_check(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyByteArray_Check(obj));
+}
+
+/* Test PyByteArray_CheckExact() */
+static PyObject *
+bytearray_checkexact(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyByteArray_CheckExact(obj));
+}
+
+/* Test PyByteArray_FromStringAndSize() */
+static PyObject *
+bytearray_fromstringandsize(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *s;
+    Py_ssize_t bsize;
+    Py_ssize_t size = -100;
+
+    if (!PyArg_ParseTuple(args, "z#|n", &s, &bsize, &size)) {
+        return NULL;
+    }
+
+    if (size == -100) {
+        size = bsize;
+    }
+    return PyByteArray_FromStringAndSize(s, size);
+}
+
+/* Test PyByteArray_FromObject() */
+static PyObject *
+bytearray_fromobject(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyByteArray_FromObject(arg);
+}
+
+/* Test PyByteArray_Size() */
+static PyObject *
+bytearray_size(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    NULLABLE(arg);
+    RETURN_SIZE(PyByteArray_Size(arg));
+}
+
+/* Test PyUnicode_AsString() */
+static PyObject *
+bytearray_asstring(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t buflen;
+    const char *s;
+
+    if (!PyArg_ParseTuple(args, "On", &obj, &buflen))
+        return NULL;
+
+    NULLABLE(obj);
+    s = PyByteArray_AsString(obj);
+    if (s == NULL)
+        return NULL;
+
+    return PyByteArray_FromStringAndSize(s, buflen);
+}
+
+/* Test PyByteArray_Concat() */
+static PyObject *
+bytearray_concat(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *left, *right;
+
+    if (!PyArg_ParseTuple(args, "OO", &left, &right))
+        return NULL;
+
+    NULLABLE(left);
+    NULLABLE(right);
+    return PyByteArray_Concat(left, right);
+}
+
+/* Test PyByteArray_Resize() */
+static PyObject *
+bytearray_resize(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t size;
+
+    if (!PyArg_ParseTuple(args, "On", &obj, &size))
+        return NULL;
+
+    NULLABLE(obj);
+    RETURN_INT(PyByteArray_Resize(obj, size));
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"bytearray_check", bytearray_check, METH_O},
+    {"bytearray_checkexact", bytearray_checkexact, METH_O},
+    {"bytearray_fromstringandsize", bytearray_fromstringandsize, METH_VARARGS},
+    {"bytearray_fromobject", bytearray_fromobject, METH_O},
+    {"bytearray_size", bytearray_size, METH_O},
+    {"bytearray_asstring", bytearray_asstring, METH_VARARGS},
+    {"bytearray_concat", bytearray_concat, METH_VARARGS},
+    {"bytearray_resize", bytearray_resize, METH_VARARGS},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_ByteArray(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/bytes.c b/Modules/_testcapi/bytes.c
new file mode 100644
index 00000000000000..da10503f6f6856
--- /dev/null
+++ b/Modules/_testcapi/bytes.c
@@ -0,0 +1,255 @@
+#include "parts.h"
+#include "util.h"
+
+
+/* Test PyBytes_Check() */
+static PyObject *
+bytes_check(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyBytes_Check(obj));
+}
+
+/* Test PyBytes_CheckExact() */
+static PyObject *
+bytes_checkexact(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyBytes_CheckExact(obj));
+}
+
+/* Test PyBytes_FromStringAndSize() */
+static PyObject *
+bytes_fromstringandsize(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *s;
+    Py_ssize_t bsize;
+    Py_ssize_t size = -100;
+
+    if (!PyArg_ParseTuple(args, "z#|n", &s, &bsize, &size)) {
+        return NULL;
+    }
+
+    if (size == -100) {
+        size = bsize;
+    }
+    return PyBytes_FromStringAndSize(s, size);
+}
+
+/* Test PyBytes_FromString() */
+static PyObject *
+bytes_fromstring(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    const char *s;
+    Py_ssize_t size;
+
+    if (!PyArg_Parse(arg, "z#", &s, &size)) {
+        return NULL;
+    }
+    return PyBytes_FromString(s);
+}
+
+/* Test PyBytes_FromObject() */
+static PyObject *
+bytes_fromobject(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyBytes_FromObject(arg);
+}
+
+/* Test PyBytes_Size() */
+static PyObject *
+bytes_size(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    NULLABLE(arg);
+    RETURN_SIZE(PyBytes_Size(arg));
+}
+
+/* Test PyUnicode_AsString() */
+static PyObject *
+bytes_asstring(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t buflen;
+    const char *s;
+
+    if (!PyArg_ParseTuple(args, "On", &obj, &buflen))
+        return NULL;
+
+    NULLABLE(obj);
+    s = PyBytes_AsString(obj);
+    if (s == NULL)
+        return NULL;
+
+    return PyBytes_FromStringAndSize(s, buflen);
+}
+
+/* Test PyBytes_AsStringAndSize() */
+static PyObject *
+bytes_asstringandsize(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t buflen;
+    char *s = UNINITIALIZED_PTR;
+    Py_ssize_t size = UNINITIALIZED_SIZE;
+
+    if (!PyArg_ParseTuple(args, "On", &obj, &buflen))
+        return NULL;
+
+    NULLABLE(obj);
+    if (PyBytes_AsStringAndSize(obj, &s, &size) < 0) {
+        return NULL;
+    }
+
+    if (s == NULL) {
+        return Py_BuildValue("(On)", Py_None, size);
+    }
+    else {
+        return Py_BuildValue("(y#n)", s, buflen, size);
+    }
+}
+
+static PyObject *
+bytes_asstringandsize_null(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t buflen;
+    char *s = UNINITIALIZED_PTR;
+
+    if (!PyArg_ParseTuple(args, "On", &obj, &buflen))
+        return NULL;
+
+    NULLABLE(obj);
+    if (PyBytes_AsStringAndSize(obj, &s, NULL) < 0) {
+        return NULL;
+    }
+
+    if (s == NULL) {
+        Py_RETURN_NONE;
+    }
+    else {
+        return PyBytes_FromStringAndSize(s, buflen);
+    }
+}
+
+/* Test PyBytes_Repr() */
+static PyObject *
+bytes_repr(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    int smartquotes;
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &smartquotes))
+        return NULL;
+
+    NULLABLE(obj);
+    return PyBytes_Repr(obj, smartquotes);
+}
+
+/* Test PyBytes_Concat() */
+static PyObject *
+bytes_concat(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *left, *right;
+    int new = 0;
+
+    if (!PyArg_ParseTuple(args, "OO|p", &left, &right, &new))
+        return NULL;
+
+    NULLABLE(left);
+    NULLABLE(right);
+    if (new) {
+        assert(left != NULL);
+        assert(PyBytes_CheckExact(left));
+        left = PyBytes_FromStringAndSize(PyBytes_AS_STRING(left),
+                                         PyBytes_GET_SIZE(left));
+        if (left == NULL) {
+            return NULL;
+        }
+    }
+    else {
+        Py_XINCREF(left);
+    }
+    PyBytes_Concat(&left, right);
+    if (left == NULL && !PyErr_Occurred()) {
+        Py_RETURN_NONE;
+    }
+    return left;
+}
+
+/* Test PyBytes_ConcatAndDel() */
+static PyObject *
+bytes_concatanddel(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *left, *right;
+    int new = 0;
+
+    if (!PyArg_ParseTuple(args, "OO|p", &left, &right, &new))
+        return NULL;
+
+    NULLABLE(left);
+    NULLABLE(right);
+    if (new) {
+        assert(left != NULL);
+        assert(PyBytes_CheckExact(left));
+        left = PyBytes_FromStringAndSize(PyBytes_AS_STRING(left),
+                                         PyBytes_GET_SIZE(left));
+        if (left == NULL) {
+            return NULL;
+        }
+    }
+    else {
+        Py_XINCREF(left);
+    }
+    Py_XINCREF(right);
+    PyBytes_ConcatAndDel(&left, right);
+    if (left == NULL && !PyErr_Occurred()) {
+        Py_RETURN_NONE;
+    }
+    return left;
+}
+
+/* Test PyBytes_DecodeEscape() */
+static PyObject *
+bytes_decodeescape(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *s;
+    Py_ssize_t bsize;
+    Py_ssize_t size = -100;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "z#|zn", &s, &bsize, &errors, &size))
+        return NULL;
+
+    if (size == -100) {
+        size = bsize;
+    }
+    return PyBytes_DecodeEscape(s, size, errors, 0, NULL);
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"bytes_check", bytes_check, METH_O},
+    {"bytes_checkexact", bytes_checkexact, METH_O},
+    {"bytes_fromstringandsize", bytes_fromstringandsize, METH_VARARGS},
+    {"bytes_fromstring", bytes_fromstring, METH_O},
+    {"bytes_fromobject", bytes_fromobject, METH_O},
+    {"bytes_size", bytes_size, METH_O},
+    {"bytes_asstring", bytes_asstring, METH_VARARGS},
+    {"bytes_asstringandsize", bytes_asstringandsize, METH_VARARGS},
+    {"bytes_asstringandsize_null", bytes_asstringandsize_null, METH_VARARGS},
+    {"bytes_repr", bytes_repr, METH_VARARGS},
+    {"bytes_concat", bytes_concat, METH_VARARGS},
+    {"bytes_concatanddel", bytes_concatanddel, METH_VARARGS},
+    {"bytes_decodeescape", bytes_decodeescape, METH_VARARGS},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Bytes(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/clinic/exceptions.c.h b/Modules/_testcapi/clinic/exceptions.c.h
new file mode 100644
index 00000000000000..a797444c1a72b9
--- /dev/null
+++ b/Modules/_testcapi/clinic/exceptions.c.h
@@ -0,0 +1,459 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
+#endif
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+
+PyDoc_STRVAR(_testcapi_err_set_raised__doc__,
+"err_set_raised($module, exception, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_ERR_SET_RAISED_METHODDEF    \
+    {"err_set_raised", (PyCFunction)_testcapi_err_set_raised, METH_O, _testcapi_err_set_raised__doc__},
+
+PyDoc_STRVAR(_testcapi_exception_print__doc__,
+"exception_print($module, exception, legacy=False, /)\n"
+"--\n"
+"\n"
+"To test the format of exceptions as printed out.");
+
+#define _TESTCAPI_EXCEPTION_PRINT_METHODDEF    \
+    {"exception_print", _PyCFunction_CAST(_testcapi_exception_print), METH_FASTCALL, _testcapi_exception_print__doc__},
+
+static PyObject *
+_testcapi_exception_print_impl(PyObject *module, PyObject *exc, int legacy);
+
+static PyObject *
+_testcapi_exception_print(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *exc;
+    int legacy = 0;
+
+    if (!_PyArg_CheckPositional("exception_print", nargs, 1, 2)) {
+        goto exit;
+    }
+    exc = args[0];
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    legacy = PyObject_IsTrue(args[1]);
+    if (legacy < 0) {
+        goto exit;
+    }
+skip_optional:
+    return_value = _testcapi_exception_print_impl(module, exc, legacy);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_make_exception_with_doc__doc__,
+"make_exception_with_doc($module, /, name, doc=<unrepresentable>,\n"
+"                        base=<unrepresentable>, dict=<unrepresentable>)\n"
+"--\n"
+"\n"
+"Test PyErr_NewExceptionWithDoc (also exercise PyErr_NewException). Run via Lib/test/test_exceptions.py");
+
+#define _TESTCAPI_MAKE_EXCEPTION_WITH_DOC_METHODDEF    \
+    {"make_exception_with_doc", _PyCFunction_CAST(_testcapi_make_exception_with_doc), METH_FASTCALL|METH_KEYWORDS, _testcapi_make_exception_with_doc__doc__},
+
+static PyObject *
+_testcapi_make_exception_with_doc_impl(PyObject *module, const char *name,
+                                       const char *doc, PyObject *base,
+                                       PyObject *dict);
+
+static PyObject *
+_testcapi_make_exception_with_doc(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), &_Py_ID(doc), &_Py_ID(base), &_Py_ID(dict), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", "doc", "base", "dict", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "make_exception_with_doc",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    const char *name;
+    const char *doc = NULL;
+    PyObject *base = NULL;
+    PyObject *dict = NULL;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 4, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("make_exception_with_doc", "argument 'name'", "str", args[0]);
+        goto exit;
+    }
+    Py_ssize_t name_length;
+    name = PyUnicode_AsUTF8AndSize(args[0], &name_length);
+    if (name == NULL) {
+        goto exit;
+    }
+    if (strlen(name) != (size_t)name_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        if (!PyUnicode_Check(args[1])) {
+            _PyArg_BadArgument("make_exception_with_doc", "argument 'doc'", "str", args[1]);
+            goto exit;
+        }
+        Py_ssize_t doc_length;
+        doc = PyUnicode_AsUTF8AndSize(args[1], &doc_length);
+        if (doc == NULL) {
+            goto exit;
+        }
+        if (strlen(doc) != (size_t)doc_length) {
+            PyErr_SetString(PyExc_ValueError, "embedded null character");
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[2]) {
+        base = args[2];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    dict = args[3];
+skip_optional_pos:
+    return_value = _testcapi_make_exception_with_doc_impl(module, name, doc, base, dict);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_exc_set_object__doc__,
+"exc_set_object($module, exception, obj, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_EXC_SET_OBJECT_METHODDEF    \
+    {"exc_set_object", _PyCFunction_CAST(_testcapi_exc_set_object), METH_FASTCALL, _testcapi_exc_set_object__doc__},
+
+static PyObject *
+_testcapi_exc_set_object_impl(PyObject *module, PyObject *exc, PyObject *obj);
+
+static PyObject *
+_testcapi_exc_set_object(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *exc;
+    PyObject *obj;
+
+    if (!_PyArg_CheckPositional("exc_set_object", nargs, 2, 2)) {
+        goto exit;
+    }
+    exc = args[0];
+    obj = args[1];
+    return_value = _testcapi_exc_set_object_impl(module, exc, obj);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_exc_set_object_fetch__doc__,
+"exc_set_object_fetch($module, exception, obj, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_EXC_SET_OBJECT_FETCH_METHODDEF    \
+    {"exc_set_object_fetch", _PyCFunction_CAST(_testcapi_exc_set_object_fetch), METH_FASTCALL, _testcapi_exc_set_object_fetch__doc__},
+
+static PyObject *
+_testcapi_exc_set_object_fetch_impl(PyObject *module, PyObject *exc,
+                                    PyObject *obj);
+
+static PyObject *
+_testcapi_exc_set_object_fetch(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *exc;
+    PyObject *obj;
+
+    if (!_PyArg_CheckPositional("exc_set_object_fetch", nargs, 2, 2)) {
+        goto exit;
+    }
+    exc = args[0];
+    obj = args[1];
+    return_value = _testcapi_exc_set_object_fetch_impl(module, exc, obj);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_err_setstring__doc__,
+"err_setstring($module, exc, value, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_ERR_SETSTRING_METHODDEF    \
+    {"err_setstring", _PyCFunction_CAST(_testcapi_err_setstring), METH_FASTCALL, _testcapi_err_setstring__doc__},
+
+static PyObject *
+_testcapi_err_setstring_impl(PyObject *module, PyObject *exc,
+                             const char *value, Py_ssize_t value_length);
+
+static PyObject *
+_testcapi_err_setstring(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *exc;
+    const char *value;
+    Py_ssize_t value_length;
+
+    if (!_PyArg_ParseStack(args, nargs, "Oz#:err_setstring",
+        &exc, &value, &value_length)) {
+        goto exit;
+    }
+    return_value = _testcapi_err_setstring_impl(module, exc, value, value_length);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_err_setfromerrnowithfilename__doc__,
+"err_setfromerrnowithfilename($module, error, exc, value, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_ERR_SETFROMERRNOWITHFILENAME_METHODDEF    \
+    {"err_setfromerrnowithfilename", _PyCFunction_CAST(_testcapi_err_setfromerrnowithfilename), METH_FASTCALL, _testcapi_err_setfromerrnowithfilename__doc__},
+
+static PyObject *
+_testcapi_err_setfromerrnowithfilename_impl(PyObject *module, int error,
+                                            PyObject *exc, const char *value,
+                                            Py_ssize_t value_length);
+
+static PyObject *
+_testcapi_err_setfromerrnowithfilename(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int error;
+    PyObject *exc;
+    const char *value;
+    Py_ssize_t value_length;
+
+    if (!_PyArg_ParseStack(args, nargs, "iOz#:err_setfromerrnowithfilename",
+        &error, &exc, &value, &value_length)) {
+        goto exit;
+    }
+    return_value = _testcapi_err_setfromerrnowithfilename_impl(module, error, exc, value, value_length);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_raise_exception__doc__,
+"raise_exception($module, exception, num_args, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_RAISE_EXCEPTION_METHODDEF    \
+    {"raise_exception", _PyCFunction_CAST(_testcapi_raise_exception), METH_FASTCALL, _testcapi_raise_exception__doc__},
+
+static PyObject *
+_testcapi_raise_exception_impl(PyObject *module, PyObject *exc, int num_args);
+
+static PyObject *
+_testcapi_raise_exception(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *exc;
+    int num_args;
+
+    if (!_PyArg_CheckPositional("raise_exception", nargs, 2, 2)) {
+        goto exit;
+    }
+    exc = args[0];
+    num_args = PyLong_AsInt(args[1]);
+    if (num_args == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _testcapi_raise_exception_impl(module, exc, num_args);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_raise_memoryerror__doc__,
+"raise_memoryerror($module, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_RAISE_MEMORYERROR_METHODDEF    \
+    {"raise_memoryerror", (PyCFunction)_testcapi_raise_memoryerror, METH_NOARGS, _testcapi_raise_memoryerror__doc__},
+
+static PyObject *
+_testcapi_raise_memoryerror_impl(PyObject *module);
+
+static PyObject *
+_testcapi_raise_memoryerror(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_raise_memoryerror_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_fatal_error__doc__,
+"fatal_error($module, message, release_gil=False, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_FATAL_ERROR_METHODDEF    \
+    {"fatal_error", _PyCFunction_CAST(_testcapi_fatal_error), METH_FASTCALL, _testcapi_fatal_error__doc__},
+
+static PyObject *
+_testcapi_fatal_error_impl(PyObject *module, const char *message,
+                           int release_gil);
+
+static PyObject *
+_testcapi_fatal_error(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    const char *message;
+    int release_gil = 0;
+
+    if (!_PyArg_ParseStack(args, nargs, "y|p:fatal_error",
+        &message, &release_gil)) {
+        goto exit;
+    }
+    return_value = _testcapi_fatal_error_impl(module, message, release_gil);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_set_exc_info__doc__,
+"set_exc_info($module, new_type, new_value, new_tb, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_SET_EXC_INFO_METHODDEF    \
+    {"set_exc_info", _PyCFunction_CAST(_testcapi_set_exc_info), METH_FASTCALL, _testcapi_set_exc_info__doc__},
+
+static PyObject *
+_testcapi_set_exc_info_impl(PyObject *module, PyObject *new_type,
+                            PyObject *new_value, PyObject *new_tb);
+
+static PyObject *
+_testcapi_set_exc_info(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *new_type;
+    PyObject *new_value;
+    PyObject *new_tb;
+
+    if (!_PyArg_CheckPositional("set_exc_info", nargs, 3, 3)) {
+        goto exit;
+    }
+    new_type = args[0];
+    new_value = args[1];
+    new_tb = args[2];
+    return_value = _testcapi_set_exc_info_impl(module, new_type, new_value, new_tb);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_set_exception__doc__,
+"set_exception($module, new_exc, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_SET_EXCEPTION_METHODDEF    \
+    {"set_exception", (PyCFunction)_testcapi_set_exception, METH_O, _testcapi_set_exception__doc__},
+
+PyDoc_STRVAR(_testcapi_traceback_print__doc__,
+"traceback_print($module, traceback, file, /)\n"
+"--\n"
+"\n"
+"To test the format of tracebacks as printed out.");
+
+#define _TESTCAPI_TRACEBACK_PRINT_METHODDEF    \
+    {"traceback_print", _PyCFunction_CAST(_testcapi_traceback_print), METH_FASTCALL, _testcapi_traceback_print__doc__},
+
+static PyObject *
+_testcapi_traceback_print_impl(PyObject *module, PyObject *traceback,
+                               PyObject *file);
+
+static PyObject *
+_testcapi_traceback_print(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *traceback;
+    PyObject *file;
+
+    if (!_PyArg_CheckPositional("traceback_print", nargs, 2, 2)) {
+        goto exit;
+    }
+    traceback = args[0];
+    file = args[1];
+    return_value = _testcapi_traceback_print_impl(module, traceback, file);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_unstable_exc_prep_reraise_star__doc__,
+"unstable_exc_prep_reraise_star($module, orig, excs, /)\n"
+"--\n"
+"\n"
+"To test PyUnstable_Exc_PrepReraiseStar.");
+
+#define _TESTCAPI_UNSTABLE_EXC_PREP_RERAISE_STAR_METHODDEF    \
+    {"unstable_exc_prep_reraise_star", _PyCFunction_CAST(_testcapi_unstable_exc_prep_reraise_star), METH_FASTCALL, _testcapi_unstable_exc_prep_reraise_star__doc__},
+
+static PyObject *
+_testcapi_unstable_exc_prep_reraise_star_impl(PyObject *module,
+                                              PyObject *orig, PyObject *excs);
+
+static PyObject *
+_testcapi_unstable_exc_prep_reraise_star(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *orig;
+    PyObject *excs;
+
+    if (!_PyArg_CheckPositional("unstable_exc_prep_reraise_star", nargs, 2, 2)) {
+        goto exit;
+    }
+    orig = args[0];
+    excs = args[1];
+    return_value = _testcapi_unstable_exc_prep_reraise_star_impl(module, orig, excs);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=0b11ef105030a48e input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/clinic/float.c.h b/Modules/_testcapi/clinic/float.c.h
index c1dff2a9ac5789..d5a00c8072da1e 100644
--- a/Modules/_testcapi/clinic/float.c.h
+++ b/Modules/_testcapi/clinic/float.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_testcapi_float_pack__doc__,
 "float_pack($module, size, d, le, /)\n"
@@ -31,7 +27,7 @@ _testcapi_float_pack(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("float_pack", nargs, 3, 3)) {
         goto exit;
     }
-    size = _PyLong_AsInt(args[0]);
+    size = PyLong_AsInt(args[0]);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -45,7 +41,7 @@ _testcapi_float_pack(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
             goto exit;
         }
     }
-    le = _PyLong_AsInt(args[2]);
+    le = PyLong_AsInt(args[2]);
     if (le == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -85,4 +81,4 @@ _testcapi_float_unpack(PyObject *module, PyObject *const *args, Py_ssize_t nargs
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=083e5df26cd5fbeb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b43dfd3a77fe04ba input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/clinic/long.c.h b/Modules/_testcapi/clinic/long.c.h
new file mode 100644
index 00000000000000..e2f7042be12c48
--- /dev/null
+++ b/Modules/_testcapi/clinic/long.c.h
@@ -0,0 +1,151 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(_testcapi_test_long_api__doc__,
+"test_long_api($module, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_TEST_LONG_API_METHODDEF    \
+    {"test_long_api", (PyCFunction)_testcapi_test_long_api, METH_NOARGS, _testcapi_test_long_api__doc__},
+
+static PyObject *
+_testcapi_test_long_api_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_long_api(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_long_api_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_test_longlong_api__doc__,
+"test_longlong_api($module, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_TEST_LONGLONG_API_METHODDEF    \
+    {"test_longlong_api", (PyCFunction)_testcapi_test_longlong_api, METH_NOARGS, _testcapi_test_longlong_api__doc__},
+
+static PyObject *
+_testcapi_test_longlong_api_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_longlong_api(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_longlong_api_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_test_long_and_overflow__doc__,
+"test_long_and_overflow($module, /)\n"
+"--\n"
+"\n"
+"Test the PyLong_AsLongAndOverflow API.\n"
+"\n"
+"General conversion to PY_LONG is tested by test_long_api_inner.\n"
+"This test will concentrate on proper handling of overflow.");
+
+#define _TESTCAPI_TEST_LONG_AND_OVERFLOW_METHODDEF    \
+    {"test_long_and_overflow", (PyCFunction)_testcapi_test_long_and_overflow, METH_NOARGS, _testcapi_test_long_and_overflow__doc__},
+
+static PyObject *
+_testcapi_test_long_and_overflow_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_long_and_overflow(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_long_and_overflow_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_test_long_long_and_overflow__doc__,
+"test_long_long_and_overflow($module, /)\n"
+"--\n"
+"\n"
+"Test the PyLong_AsLongLongAndOverflow API.\n"
+"\n"
+"General conversion to long long is tested by test_long_api_inner.\n"
+"This test will concentrate on proper handling of overflow.");
+
+#define _TESTCAPI_TEST_LONG_LONG_AND_OVERFLOW_METHODDEF    \
+    {"test_long_long_and_overflow", (PyCFunction)_testcapi_test_long_long_and_overflow, METH_NOARGS, _testcapi_test_long_long_and_overflow__doc__},
+
+static PyObject *
+_testcapi_test_long_long_and_overflow_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_long_long_and_overflow(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_long_long_and_overflow_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_test_long_as_size_t__doc__,
+"test_long_as_size_t($module, /)\n"
+"--\n"
+"\n"
+"Test the PyLong_As{Size,Ssize}_t API.\n"
+"\n"
+"At present this just tests that non-integer arguments are handled correctly.\n"
+"It should be extended to test overflow handling.");
+
+#define _TESTCAPI_TEST_LONG_AS_SIZE_T_METHODDEF    \
+    {"test_long_as_size_t", (PyCFunction)_testcapi_test_long_as_size_t, METH_NOARGS, _testcapi_test_long_as_size_t__doc__},
+
+static PyObject *
+_testcapi_test_long_as_size_t_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_long_as_size_t(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_long_as_size_t_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_test_long_as_unsigned_long_long_mask__doc__,
+"test_long_as_unsigned_long_long_mask($module, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_TEST_LONG_AS_UNSIGNED_LONG_LONG_MASK_METHODDEF    \
+    {"test_long_as_unsigned_long_long_mask", (PyCFunction)_testcapi_test_long_as_unsigned_long_long_mask, METH_NOARGS, _testcapi_test_long_as_unsigned_long_long_mask__doc__},
+
+static PyObject *
+_testcapi_test_long_as_unsigned_long_long_mask_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_long_as_unsigned_long_long_mask(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_long_as_unsigned_long_long_mask_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_test_long_as_double__doc__,
+"test_long_as_double($module, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_TEST_LONG_AS_DOUBLE_METHODDEF    \
+    {"test_long_as_double", (PyCFunction)_testcapi_test_long_as_double, METH_NOARGS, _testcapi_test_long_as_double__doc__},
+
+static PyObject *
+_testcapi_test_long_as_double_impl(PyObject *module);
+
+static PyObject *
+_testcapi_test_long_as_double(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testcapi_test_long_as_double_impl(module);
+}
+
+PyDoc_STRVAR(_testcapi_call_long_compact_api__doc__,
+"call_long_compact_api($module, arg, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_CALL_LONG_COMPACT_API_METHODDEF    \
+    {"call_long_compact_api", (PyCFunction)_testcapi_call_long_compact_api, METH_O, _testcapi_call_long_compact_api__doc__},
+
+PyDoc_STRVAR(_testcapi_PyLong_AsInt__doc__,
+"PyLong_AsInt($module, arg, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYLONG_ASINT_METHODDEF    \
+    {"PyLong_AsInt", (PyCFunction)_testcapi_PyLong_AsInt, METH_O, _testcapi_PyLong_AsInt__doc__},
+/*[clinic end generated code: output=de762870526e241d input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/clinic/vectorcall.c.h b/Modules/_testcapi/clinic/vectorcall.c.h
index 765afeda9b306c..c6049a438dc8fc 100644
--- a/Modules/_testcapi/clinic/vectorcall.c.h
+++ b/Modules/_testcapi/clinic/vectorcall.c.h
@@ -2,11 +2,107 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
+PyDoc_STRVAR(_testcapi_pyobject_fastcalldict__doc__,
+"pyobject_fastcalldict($module, func, func_args, kwargs, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYOBJECT_FASTCALLDICT_METHODDEF    \
+    {"pyobject_fastcalldict", _PyCFunction_CAST(_testcapi_pyobject_fastcalldict), METH_FASTCALL, _testcapi_pyobject_fastcalldict__doc__},
+
+static PyObject *
+_testcapi_pyobject_fastcalldict_impl(PyObject *module, PyObject *func,
+                                     PyObject *func_args, PyObject *kwargs);
+
+static PyObject *
+_testcapi_pyobject_fastcalldict(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *func;
+    PyObject *func_args;
+    PyObject *__clinic_kwargs;
+
+    if (!_PyArg_CheckPositional("pyobject_fastcalldict", nargs, 3, 3)) {
+        goto exit;
+    }
+    func = args[0];
+    func_args = args[1];
+    __clinic_kwargs = args[2];
+    return_value = _testcapi_pyobject_fastcalldict_impl(module, func, func_args, __clinic_kwargs);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_pyobject_vectorcall__doc__,
+"pyobject_vectorcall($module, func, func_args, kwnames, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYOBJECT_VECTORCALL_METHODDEF    \
+    {"pyobject_vectorcall", _PyCFunction_CAST(_testcapi_pyobject_vectorcall), METH_FASTCALL, _testcapi_pyobject_vectorcall__doc__},
+
+static PyObject *
+_testcapi_pyobject_vectorcall_impl(PyObject *module, PyObject *func,
+                                   PyObject *func_args, PyObject *kwnames);
+
+static PyObject *
+_testcapi_pyobject_vectorcall(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *func;
+    PyObject *func_args;
+    PyObject *__clinic_kwnames;
+
+    if (!_PyArg_CheckPositional("pyobject_vectorcall", nargs, 3, 3)) {
+        goto exit;
+    }
+    func = args[0];
+    func_args = args[1];
+    __clinic_kwnames = args[2];
+    return_value = _testcapi_pyobject_vectorcall_impl(module, func, func_args, __clinic_kwnames);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_pyvectorcall_call__doc__,
+"pyvectorcall_call($module, func, argstuple, kwargs=<unrepresentable>, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYVECTORCALL_CALL_METHODDEF    \
+    {"pyvectorcall_call", _PyCFunction_CAST(_testcapi_pyvectorcall_call), METH_FASTCALL, _testcapi_pyvectorcall_call__doc__},
+
+static PyObject *
+_testcapi_pyvectorcall_call_impl(PyObject *module, PyObject *func,
+                                 PyObject *argstuple, PyObject *kwargs);
+
+static PyObject *
+_testcapi_pyvectorcall_call(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *func;
+    PyObject *argstuple;
+    PyObject *__clinic_kwargs = NULL;
+
+    if (!_PyArg_CheckPositional("pyvectorcall_call", nargs, 2, 3)) {
+        goto exit;
+    }
+    func = args[0];
+    argstuple = args[1];
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    __clinic_kwargs = args[2];
+skip_optional:
+    return_value = _testcapi_pyvectorcall_call_impl(module, func, argstuple, __clinic_kwargs);
+
+exit:
+    return return_value;
+}
 
 PyDoc_STRVAR(_testcapi_VectorCallClass_set_vectorcall__doc__,
 "set_vectorcall($self, type, /)\n"
@@ -110,4 +206,4 @@ _testcapi_has_vectorcall_flag(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=609569aa9942584f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=210ae67caab177ba input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/clinic/vectorcall_limited.c.h b/Modules/_testcapi/clinic/vectorcall_limited.c.h
new file mode 100644
index 00000000000000..a233aefec79ecd
--- /dev/null
+++ b/Modules/_testcapi/clinic/vectorcall_limited.c.h
@@ -0,0 +1,20 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(_testcapi_call_vectorcall__doc__,
+"call_vectorcall($module, callable, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_CALL_VECTORCALL_METHODDEF    \
+    {"call_vectorcall", (PyCFunction)_testcapi_call_vectorcall, METH_O, _testcapi_call_vectorcall__doc__},
+
+PyDoc_STRVAR(_testcapi_call_vectorcall_method__doc__,
+"call_vectorcall_method($module, callable, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_CALL_VECTORCALL_METHOD_METHODDEF    \
+    {"call_vectorcall_method", (PyCFunction)_testcapi_call_vectorcall_method, METH_O, _testcapi_call_vectorcall_method__doc__},
+/*[clinic end generated code: output=e980906a39602528 input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/clinic/watchers.c.h b/Modules/_testcapi/clinic/watchers.c.h
new file mode 100644
index 00000000000000..ebd71d119fa347
--- /dev/null
+++ b/Modules/_testcapi/clinic/watchers.c.h
@@ -0,0 +1,194 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+
+PyDoc_STRVAR(_testcapi_watch_dict__doc__,
+"watch_dict($module, watcher_id, dict, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_WATCH_DICT_METHODDEF    \
+    {"watch_dict", _PyCFunction_CAST(_testcapi_watch_dict), METH_FASTCALL, _testcapi_watch_dict__doc__},
+
+static PyObject *
+_testcapi_watch_dict_impl(PyObject *module, int watcher_id, PyObject *dict);
+
+static PyObject *
+_testcapi_watch_dict(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int watcher_id;
+    PyObject *dict;
+
+    if (!_PyArg_CheckPositional("watch_dict", nargs, 2, 2)) {
+        goto exit;
+    }
+    watcher_id = PyLong_AsInt(args[0]);
+    if (watcher_id == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    dict = args[1];
+    return_value = _testcapi_watch_dict_impl(module, watcher_id, dict);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_unwatch_dict__doc__,
+"unwatch_dict($module, watcher_id, dict, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_UNWATCH_DICT_METHODDEF    \
+    {"unwatch_dict", _PyCFunction_CAST(_testcapi_unwatch_dict), METH_FASTCALL, _testcapi_unwatch_dict__doc__},
+
+static PyObject *
+_testcapi_unwatch_dict_impl(PyObject *module, int watcher_id, PyObject *dict);
+
+static PyObject *
+_testcapi_unwatch_dict(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int watcher_id;
+    PyObject *dict;
+
+    if (!_PyArg_CheckPositional("unwatch_dict", nargs, 2, 2)) {
+        goto exit;
+    }
+    watcher_id = PyLong_AsInt(args[0]);
+    if (watcher_id == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    dict = args[1];
+    return_value = _testcapi_unwatch_dict_impl(module, watcher_id, dict);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_watch_type__doc__,
+"watch_type($module, watcher_id, type, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_WATCH_TYPE_METHODDEF    \
+    {"watch_type", _PyCFunction_CAST(_testcapi_watch_type), METH_FASTCALL, _testcapi_watch_type__doc__},
+
+static PyObject *
+_testcapi_watch_type_impl(PyObject *module, int watcher_id, PyObject *type);
+
+static PyObject *
+_testcapi_watch_type(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int watcher_id;
+    PyObject *type;
+
+    if (!_PyArg_CheckPositional("watch_type", nargs, 2, 2)) {
+        goto exit;
+    }
+    watcher_id = PyLong_AsInt(args[0]);
+    if (watcher_id == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    type = args[1];
+    return_value = _testcapi_watch_type_impl(module, watcher_id, type);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_unwatch_type__doc__,
+"unwatch_type($module, watcher_id, type, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_UNWATCH_TYPE_METHODDEF    \
+    {"unwatch_type", _PyCFunction_CAST(_testcapi_unwatch_type), METH_FASTCALL, _testcapi_unwatch_type__doc__},
+
+static PyObject *
+_testcapi_unwatch_type_impl(PyObject *module, int watcher_id, PyObject *type);
+
+static PyObject *
+_testcapi_unwatch_type(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int watcher_id;
+    PyObject *type;
+
+    if (!_PyArg_CheckPositional("unwatch_type", nargs, 2, 2)) {
+        goto exit;
+    }
+    watcher_id = PyLong_AsInt(args[0]);
+    if (watcher_id == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    type = args[1];
+    return_value = _testcapi_unwatch_type_impl(module, watcher_id, type);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_set_func_defaults_via_capi__doc__,
+"set_func_defaults_via_capi($module, func, defaults, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_SET_FUNC_DEFAULTS_VIA_CAPI_METHODDEF    \
+    {"set_func_defaults_via_capi", _PyCFunction_CAST(_testcapi_set_func_defaults_via_capi), METH_FASTCALL, _testcapi_set_func_defaults_via_capi__doc__},
+
+static PyObject *
+_testcapi_set_func_defaults_via_capi_impl(PyObject *module, PyObject *func,
+                                          PyObject *defaults);
+
+static PyObject *
+_testcapi_set_func_defaults_via_capi(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *func;
+    PyObject *defaults;
+
+    if (!_PyArg_CheckPositional("set_func_defaults_via_capi", nargs, 2, 2)) {
+        goto exit;
+    }
+    func = args[0];
+    defaults = args[1];
+    return_value = _testcapi_set_func_defaults_via_capi_impl(module, func, defaults);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_set_func_kwdefaults_via_capi__doc__,
+"set_func_kwdefaults_via_capi($module, func, defaults, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_SET_FUNC_KWDEFAULTS_VIA_CAPI_METHODDEF    \
+    {"set_func_kwdefaults_via_capi", _PyCFunction_CAST(_testcapi_set_func_kwdefaults_via_capi), METH_FASTCALL, _testcapi_set_func_kwdefaults_via_capi__doc__},
+
+static PyObject *
+_testcapi_set_func_kwdefaults_via_capi_impl(PyObject *module, PyObject *func,
+                                            PyObject *defaults);
+
+static PyObject *
+_testcapi_set_func_kwdefaults_via_capi(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *func;
+    PyObject *defaults;
+
+    if (!_PyArg_CheckPositional("set_func_kwdefaults_via_capi", nargs, 2, 2)) {
+        goto exit;
+    }
+    func = args[0];
+    defaults = args[1];
+    return_value = _testcapi_set_func_kwdefaults_via_capi_impl(module, func, defaults);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=0e07ce7f295917a5 input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/code.c b/Modules/_testcapi/code.c
index 84c668cd6b3b00..c0193489b6f340 100644
--- a/Modules/_testcapi/code.c
+++ b/Modules/_testcapi/code.c
@@ -1,4 +1,5 @@
 #include "parts.h"
+#include "util.h"
 
 static Py_ssize_t
 get_code_extra_index(PyInterpreterState* interp) {
@@ -9,12 +10,12 @@ get_code_extra_index(PyInterpreterState* interp) {
     PyObject *interp_dict = PyInterpreterState_GetDict(interp); // borrowed
     assert(interp_dict);  // real users would handle missing dict... somehow
 
-    PyObject *index_obj = PyDict_GetItemString(interp_dict, key); // borrowed
+    PyObject *index_obj;
+    if (PyDict_GetItemStringRef(interp_dict, key, &index_obj) < 0) {
+        goto finally;
+    }
     Py_ssize_t index = 0;
     if (!index_obj) {
-        if (PyErr_Occurred()) {
-            goto finally;
-        }
         index = PyUnstable_Eval_RequestCodeExtraIndex(NULL);
         if (index < 0 || PyErr_Occurred()) {
             goto finally;
@@ -31,6 +32,7 @@ get_code_extra_index(PyInterpreterState* interp) {
     }
     else {
         index = PyLong_AsSsize_t(index_obj);
+        Py_DECREF(index_obj);
         if (index == -1 && PyErr_Occurred()) {
             goto finally;
         }
@@ -74,7 +76,7 @@ test_code_extra(PyObject* self, PyObject *Py_UNUSED(callable))
     }
 
     // Check the value is initially NULL
-    void *extra;
+    void *extra = UNINITIALIZED_PTR;
     int res = PyUnstable_Code_GetExtra(test_func_code, code_extra_index, &extra);
     if (res < 0) {
         goto finally;
@@ -87,6 +89,7 @@ test_code_extra(PyObject* self, PyObject *Py_UNUSED(callable))
         goto finally;
     }
     // Assert it was set correctly
+    extra = UNINITIALIZED_PTR;
     res = PyUnstable_Code_GetExtra(test_func_code, code_extra_index, &extra);
     if (res < 0) {
         goto finally;
diff --git a/Modules/_testcapi/codec.c b/Modules/_testcapi/codec.c
new file mode 100644
index 00000000000000..d13f51e20331a1
--- /dev/null
+++ b/Modules/_testcapi/codec.c
@@ -0,0 +1,17 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyMethodDef test_methods[] = {
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Codec(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0){
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/complex.c b/Modules/_testcapi/complex.c
new file mode 100644
index 00000000000000..4a70217eb90d62
--- /dev/null
+++ b/Modules/_testcapi/complex.c
@@ -0,0 +1,167 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyObject *
+complex_check(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyComplex_Check(obj));
+}
+
+static PyObject *
+complex_checkexact(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyComplex_CheckExact(obj));
+}
+
+static PyObject *
+complex_fromccomplex(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    Py_complex complex;
+
+    if (!PyArg_Parse(obj, "D", &complex)) {
+        return NULL;
+    }
+
+    return PyComplex_FromCComplex(complex);
+}
+
+static PyObject *
+complex_fromdoubles(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    double real, imag;
+
+    if (!PyArg_ParseTuple(args, "dd", &real, &imag)) {
+        return NULL;
+    }
+
+    return PyComplex_FromDoubles(real, imag);
+}
+
+static PyObject *
+complex_realasdouble(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    double real;
+
+    NULLABLE(obj);
+    real = PyComplex_RealAsDouble(obj);
+
+    if (real == -1. && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return PyFloat_FromDouble(real);
+}
+
+static PyObject *
+complex_imagasdouble(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    double imag;
+
+    NULLABLE(obj);
+    imag = PyComplex_ImagAsDouble(obj);
+
+    if (imag == -1. && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return PyFloat_FromDouble(imag);
+}
+
+static PyObject *
+complex_asccomplex(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    Py_complex complex;
+
+    NULLABLE(obj);
+    complex = PyComplex_AsCComplex(obj);
+
+    if (complex.real == -1. && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return PyComplex_FromCComplex(complex);
+}
+
+static PyObject*
+_py_c_neg(PyObject *Py_UNUSED(module), PyObject *num)
+{
+    Py_complex complex;
+
+    complex = PyComplex_AsCComplex(num);
+    if (complex.real == -1. && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return PyComplex_FromCComplex(_Py_c_neg(complex));
+}
+
+#define _PY_C_FUNC2(suffix)                                      \
+    static PyObject *                                            \
+    _py_c_##suffix(PyObject *Py_UNUSED(module), PyObject *args)  \
+    {                                                            \
+        Py_complex num, exp, res;                                \
+                                                                 \
+        if (!PyArg_ParseTuple(args, "DD", &num, &exp)) {         \
+            return NULL;                                         \
+        }                                                        \
+                                                                 \
+        errno = 0;                                               \
+        res = _Py_c_##suffix(num, exp);                          \
+        return Py_BuildValue("Di", &res, errno);                 \
+    };
+
+_PY_C_FUNC2(sum)
+_PY_C_FUNC2(diff)
+_PY_C_FUNC2(prod)
+_PY_C_FUNC2(quot)
+_PY_C_FUNC2(pow)
+
+static PyObject*
+_py_c_abs(PyObject *Py_UNUSED(module), PyObject* obj)
+{
+    Py_complex complex;
+    double res;
+
+    NULLABLE(obj);
+    complex = PyComplex_AsCComplex(obj);
+
+    if (complex.real == -1. && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    errno = 0;
+    res = _Py_c_abs(complex);
+    return Py_BuildValue("di", res, errno);
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"complex_check", complex_check, METH_O},
+    {"complex_checkexact", complex_checkexact, METH_O},
+    {"complex_fromccomplex", complex_fromccomplex, METH_O},
+    {"complex_fromdoubles", complex_fromdoubles, METH_VARARGS},
+    {"complex_realasdouble", complex_realasdouble, METH_O},
+    {"complex_imagasdouble", complex_imagasdouble, METH_O},
+    {"complex_asccomplex", complex_asccomplex, METH_O},
+    {"_py_c_sum", _py_c_sum, METH_VARARGS},
+    {"_py_c_diff", _py_c_diff, METH_VARARGS},
+    {"_py_c_neg", _py_c_neg, METH_O},
+    {"_py_c_prod", _py_c_prod, METH_VARARGS},
+    {"_py_c_quot", _py_c_quot, METH_VARARGS},
+    {"_py_c_pow", _py_c_pow, METH_VARARGS},
+    {"_py_c_abs", _py_c_abs, METH_O},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Complex(PyObject *mod)
+{
+    if (PyModule_AddFunctions(mod, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/dict.c b/Modules/_testcapi/dict.c
new file mode 100644
index 00000000000000..42e056b7d07a31
--- /dev/null
+++ b/Modules/_testcapi/dict.c
@@ -0,0 +1,458 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyObject *
+dict_check(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyDict_Check(obj));
+}
+
+static PyObject *
+dict_checkexact(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyDict_CheckExact(obj));
+}
+
+static PyObject *
+dict_new(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    return PyDict_New();
+}
+
+static PyObject *
+dictproxy_new(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyDictProxy_New(obj);
+}
+
+static PyObject *
+dict_clear(PyObject *self, PyObject *obj)
+{
+    PyDict_Clear(obj);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+dict_copy(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyDict_Copy(obj);
+}
+
+static PyObject *
+dict_contains(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *key;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &key)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(key);
+    RETURN_INT(PyDict_Contains(obj, key));
+}
+
+static PyObject *
+dict_containsstring(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    RETURN_INT(PyDict_ContainsString(obj, key));
+}
+
+static PyObject *
+dict_size(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyDict_Size(obj));
+}
+
+static PyObject *
+dict_getitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    PyObject *value = PyDict_GetItem(mapping, key);
+    if (value == NULL) {
+        if (PyErr_Occurred()) {
+            return NULL;
+        }
+        return Py_NewRef(PyExc_KeyError);
+    }
+    return Py_NewRef(value);
+}
+
+static PyObject *
+dict_getitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &mapping, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    PyObject *value = PyDict_GetItemString(mapping, key);
+    if (value == NULL) {
+        if (PyErr_Occurred()) {
+            return NULL;
+        }
+        return Py_NewRef(PyExc_KeyError);
+    }
+    return Py_NewRef(value);
+}
+
+static PyObject *
+dict_getitemwitherror(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    PyObject *value = PyDict_GetItemWithError(mapping, key);
+    if (value == NULL) {
+        if (PyErr_Occurred()) {
+            return NULL;
+        }
+        return Py_NewRef(PyExc_KeyError);
+    }
+    return Py_NewRef(value);
+}
+
+
+static PyObject *
+dict_getitemref(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *attr_name, *value = UNINITIALIZED_PTR;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &attr_name)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(attr_name);
+
+    switch (PyDict_GetItemRef(obj, attr_name, &value)) {
+        case -1:
+            assert(value == NULL);
+            return NULL;
+        case 0:
+            assert(value == NULL);
+            return Py_NewRef(PyExc_KeyError);
+        case 1:
+            return value;
+        default:
+            Py_FatalError("PyMapping_GetItemRef() returned invalid code");
+            Py_UNREACHABLE();
+    }
+}
+
+static PyObject *
+dict_getitemstringref(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *value = UNINITIALIZED_PTR;
+    const char *attr_name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &obj, &attr_name, &size)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+
+    switch (PyDict_GetItemStringRef(obj, attr_name, &value)) {
+        case -1:
+            assert(value == NULL);
+            return NULL;
+        case 0:
+            assert(value == NULL);
+            return Py_NewRef(PyExc_KeyError);
+        case 1:
+            return value;
+        default:
+            Py_FatalError("PyDict_GetItemStringRef() returned invalid code");
+            Py_UNREACHABLE();
+    }
+}
+
+static PyObject *
+dict_setitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key, *value;
+    if (!PyArg_ParseTuple(args, "OOO", &mapping, &key, &value)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    NULLABLE(value);
+    RETURN_INT(PyDict_SetItem(mapping, key, value));
+}
+
+static PyObject *
+dict_setitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *value;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#O", &mapping, &key, &size, &value)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(value);
+    RETURN_INT(PyDict_SetItemString(mapping, key, value));
+}
+
+static PyObject *
+dict_setdefault(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key, *defaultobj;
+    if (!PyArg_ParseTuple(args, "OOO", &mapping, &key, &defaultobj)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    NULLABLE(defaultobj);
+    return PyDict_SetDefault(mapping, key, defaultobj);
+}
+
+static PyObject *
+dict_delitem(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &key)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(key);
+    RETURN_INT(PyDict_DelItem(mapping, key));
+}
+
+static PyObject *
+dict_delitemstring(PyObject *self, PyObject *args)
+{
+    PyObject *mapping;
+    const char *key;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "Oz#", &mapping, &key, &size)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    RETURN_INT(PyDict_DelItemString(mapping, key));
+}
+
+static PyObject *
+dict_keys(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyDict_Keys(obj);
+}
+
+static PyObject *
+dict_values(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyDict_Values(obj);
+}
+
+static PyObject *
+dict_items(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyDict_Items(obj);
+}
+
+static PyObject *
+dict_next(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *key = UNINITIALIZED_PTR, *value = UNINITIALIZED_PTR;
+    Py_ssize_t pos;
+    if (!PyArg_ParseTuple(args, "On", &mapping, &pos)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    int rc = PyDict_Next(mapping, &pos, &key, &value);
+    if (rc != 0) {
+        return Py_BuildValue("inOO", rc, pos, key, value);
+    }
+    assert(key == UNINITIALIZED_PTR);
+    assert(value == UNINITIALIZED_PTR);
+    if (PyErr_Occurred()) {
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+dict_merge(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *mapping2;
+    int override;
+    if (!PyArg_ParseTuple(args, "OOi", &mapping, &mapping2, &override)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(mapping2);
+    RETURN_INT(PyDict_Merge(mapping, mapping2, override));
+}
+
+static PyObject *
+dict_update(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *mapping2;
+    if (!PyArg_ParseTuple(args, "OO", &mapping, &mapping2)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(mapping2);
+    RETURN_INT(PyDict_Update(mapping, mapping2));
+}
+
+static PyObject *
+dict_mergefromseq2(PyObject *self, PyObject *args)
+{
+    PyObject *mapping, *seq;
+    int override;
+    if (!PyArg_ParseTuple(args, "OOi", &mapping, &seq, &override)) {
+        return NULL;
+    }
+    NULLABLE(mapping);
+    NULLABLE(seq);
+    RETURN_INT(PyDict_MergeFromSeq2(mapping, seq, override));
+}
+
+
+static PyObject *
+dict_pop(PyObject *self, PyObject *args)
+{
+    // Test PyDict_Pop(dict, key, &value)
+    PyObject *dict, *key;
+    if (!PyArg_ParseTuple(args, "OO", &dict, &key)) {
+        return NULL;
+    }
+    NULLABLE(dict);
+    NULLABLE(key);
+    PyObject *result = UNINITIALIZED_PTR;
+    int res = PyDict_Pop(dict, key,  &result);
+    if (res < 0) {
+        assert(result == NULL);
+        return NULL;
+    }
+    if (res == 0) {
+        assert(result == NULL);
+        result = Py_NewRef(Py_None);
+    }
+    else {
+        assert(result != NULL);
+    }
+    return Py_BuildValue("iN", res, result);
+}
+
+
+static PyObject *
+dict_pop_null(PyObject *self, PyObject *args)
+{
+    // Test PyDict_Pop(dict, key, NULL)
+    PyObject *dict, *key;
+    if (!PyArg_ParseTuple(args, "OO", &dict, &key)) {
+        return NULL;
+    }
+    NULLABLE(dict);
+    NULLABLE(key);
+    RETURN_INT(PyDict_Pop(dict, key,  NULL));
+}
+
+
+static PyObject *
+dict_popstring(PyObject *self, PyObject *args)
+{
+    PyObject *dict;
+    const char *key;
+    Py_ssize_t key_size;
+    if (!PyArg_ParseTuple(args, "Oz#", &dict, &key, &key_size)) {
+        return NULL;
+    }
+    NULLABLE(dict);
+    PyObject *result = UNINITIALIZED_PTR;
+    int res = PyDict_PopString(dict, key,  &result);
+    if (res < 0) {
+        assert(result == NULL);
+        return NULL;
+    }
+    if (res == 0) {
+        assert(result == NULL);
+        result = Py_NewRef(Py_None);
+    }
+    else {
+        assert(result != NULL);
+    }
+    return Py_BuildValue("iN", res, result);
+}
+
+
+static PyObject *
+dict_popstring_null(PyObject *self, PyObject *args)
+{
+    PyObject *dict;
+    const char *key;
+    Py_ssize_t key_size;
+    if (!PyArg_ParseTuple(args, "Oz#", &dict, &key, &key_size)) {
+        return NULL;
+    }
+    NULLABLE(dict);
+    RETURN_INT(PyDict_PopString(dict, key,  NULL));
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"dict_check", dict_check, METH_O},
+    {"dict_checkexact", dict_checkexact, METH_O},
+    {"dict_new", dict_new, METH_NOARGS},
+    {"dictproxy_new", dictproxy_new, METH_O},
+    {"dict_clear", dict_clear, METH_O},
+    {"dict_copy", dict_copy, METH_O},
+    {"dict_size", dict_size, METH_O},
+    {"dict_getitem", dict_getitem, METH_VARARGS},
+    {"dict_getitemwitherror", dict_getitemwitherror, METH_VARARGS},
+    {"dict_getitemstring", dict_getitemstring, METH_VARARGS},
+    {"dict_getitemref", dict_getitemref, METH_VARARGS},
+    {"dict_getitemstringref", dict_getitemstringref, METH_VARARGS},
+    {"dict_contains", dict_contains, METH_VARARGS},
+    {"dict_containsstring", dict_containsstring, METH_VARARGS},
+    {"dict_setitem", dict_setitem, METH_VARARGS},
+    {"dict_setitemstring", dict_setitemstring, METH_VARARGS},
+    {"dict_delitem", dict_delitem, METH_VARARGS},
+    {"dict_delitemstring", dict_delitemstring, METH_VARARGS},
+    {"dict_setdefault", dict_setdefault, METH_VARARGS},
+    {"dict_keys", dict_keys, METH_O},
+    {"dict_values", dict_values, METH_O},
+    {"dict_items", dict_items, METH_O},
+    {"dict_next", dict_next, METH_VARARGS},
+    {"dict_merge", dict_merge, METH_VARARGS},
+    {"dict_update", dict_update, METH_VARARGS},
+    {"dict_mergefromseq2", dict_mergefromseq2, METH_VARARGS},
+    {"dict_pop", dict_pop, METH_VARARGS},
+    {"dict_pop_null", dict_pop_null, METH_VARARGS},
+    {"dict_popstring", dict_popstring, METH_VARARGS},
+    {"dict_popstring_null", dict_popstring_null, METH_VARARGS},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Dict(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/docstring.c b/Modules/_testcapi/docstring.c
index a997c54a8a69c4..d99fbdd904b594 100644
--- a/Modules/_testcapi/docstring.c
+++ b/Modules/_testcapi/docstring.c
@@ -66,42 +66,132 @@ test_with_docstring(PyObject *self, PyObject *Py_UNUSED(ignored))
 
 static PyMethodDef test_methods[] = {
     {"docstring_empty",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_empty},
     {"docstring_no_signature",
+        (PyCFunction)test_with_docstring, METH_VARARGS,
+        docstring_no_signature},
+    {"docstring_no_signature_noargs",
         (PyCFunction)test_with_docstring, METH_NOARGS,
         docstring_no_signature},
+    {"docstring_no_signature_o",
+        (PyCFunction)test_with_docstring, METH_O,
+        docstring_no_signature},
     {"docstring_with_invalid_signature",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_with_invalid_signature},
     {"docstring_with_invalid_signature2",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_with_invalid_signature2},
     {"docstring_with_signature",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_with_signature},
     {"docstring_with_signature_and_extra_newlines",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_with_signature_and_extra_newlines},
     {"docstring_with_signature_but_no_doc",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_with_signature_but_no_doc},
     {"docstring_with_signature_with_defaults",
-        (PyCFunction)test_with_docstring, METH_NOARGS,
+        (PyCFunction)test_with_docstring, METH_VARARGS,
         docstring_with_signature_with_defaults},
     {"no_docstring",
-        (PyCFunction)test_with_docstring, METH_NOARGS},
+        (PyCFunction)test_with_docstring, METH_VARARGS},
     {"test_with_docstring",
-        test_with_docstring,              METH_NOARGS,
+        test_with_docstring,              METH_VARARGS,
         PyDoc_STR("This is a pretty normal docstring.")},
+    {"func_with_unrepresentable_signature",
+        (PyCFunction)test_with_docstring, METH_VARARGS,
+        PyDoc_STR(
+            "func_with_unrepresentable_signature($module, /, a, b=<x>)\n"
+            "--\n\n"
+            "This docstring has a signature with unrepresentable default."
+        )},
+    {NULL},
+};
+
+static PyMethodDef DocStringNoSignatureTest_methods[] = {
+    {"meth_noargs",
+        (PyCFunction)test_with_docstring, METH_NOARGS,
+        docstring_no_signature},
+    {"meth_o",
+        (PyCFunction)test_with_docstring, METH_O,
+        docstring_no_signature},
+    {"meth_noargs_class",
+        (PyCFunction)test_with_docstring, METH_NOARGS|METH_CLASS,
+        docstring_no_signature},
+    {"meth_o_class",
+        (PyCFunction)test_with_docstring, METH_O|METH_CLASS,
+        docstring_no_signature},
+    {"meth_noargs_static",
+        (PyCFunction)test_with_docstring, METH_NOARGS|METH_STATIC,
+        docstring_no_signature},
+    {"meth_o_static",
+        (PyCFunction)test_with_docstring, METH_O|METH_STATIC,
+        docstring_no_signature},
+    {"meth_noargs_coexist",
+        (PyCFunction)test_with_docstring, METH_NOARGS|METH_COEXIST,
+        docstring_no_signature},
+    {"meth_o_coexist",
+        (PyCFunction)test_with_docstring, METH_O|METH_COEXIST,
+        docstring_no_signature},
+    {NULL},
+};
+
+static PyTypeObject DocStringNoSignatureTest = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testcapi.DocStringNoSignatureTest",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+    .tp_methods = DocStringNoSignatureTest_methods,
+    .tp_new = PyType_GenericNew,
+};
+
+static PyMethodDef DocStringUnrepresentableSignatureTest_methods[] = {
+    {"meth",
+        (PyCFunction)test_with_docstring, METH_VARARGS,
+        PyDoc_STR(
+            "meth($self, /, a, b=<x>)\n"
+            "--\n\n"
+            "This docstring has a signature with unrepresentable default."
+        )},
+    {"classmeth",
+        (PyCFunction)test_with_docstring, METH_VARARGS|METH_CLASS,
+        PyDoc_STR(
+            "classmeth($type, /, a, b=<x>)\n"
+            "--\n\n"
+            "This docstring has a signature with unrepresentable default."
+        )},
+    {"staticmeth",
+        (PyCFunction)test_with_docstring, METH_VARARGS|METH_STATIC,
+        PyDoc_STR(
+            "staticmeth(a, b=<x>)\n"
+            "--\n\n"
+            "This docstring has a signature with unrepresentable default."
+        )},
     {NULL},
 };
 
+static PyTypeObject DocStringUnrepresentableSignatureTest = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testcapi.DocStringUnrepresentableSignatureTest",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+    .tp_methods = DocStringUnrepresentableSignatureTest_methods,
+    .tp_new = PyType_GenericNew,
+};
+
 int
 _PyTestCapi_Init_Docstring(PyObject *mod)
 {
     if (PyModule_AddFunctions(mod, test_methods) < 0) {
         return -1;
     }
+    if (PyModule_AddType(mod, &DocStringNoSignatureTest) < 0) {
+        return -1;
+    }
+    if (PyModule_AddType(mod, &DocStringUnrepresentableSignatureTest) < 0) {
+        return -1;
+    }
     return 0;
 }
diff --git a/Modules/_testcapi/exceptions.c b/Modules/_testcapi/exceptions.c
index 6099f7d20eb56a..42a9915143e6fa 100644
--- a/Modules/_testcapi/exceptions.c
+++ b/Modules/_testcapi/exceptions.c
@@ -1,7 +1,25 @@
+// clinic/exceptions.c.h uses internal pycore_modsupport.h API
+#define PYTESTCAPI_NEED_INTERNAL_API
+
 #include "parts.h"
+#include "util.h"
+#include "clinic/exceptions.c.h"
+
+
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
+
+/*[clinic input]
+_testcapi.err_set_raised
+    exception as exc: object
+    /
+[clinic start generated code]*/
 
 static PyObject *
-err_set_raised(PyObject *self, PyObject *exc)
+_testcapi_err_set_raised(PyObject *module, PyObject *exc)
+/*[clinic end generated code: output=0a0c7743961fcae5 input=c5f7331864a94df9]*/
 {
     Py_INCREF(exc);
     PyErr_SetRaisedException(exc);
@@ -35,16 +53,19 @@ err_restore(PyObject *self, PyObject *args) {
     return NULL;
 }
 
-/* To test the format of exceptions as printed out. */
+/*[clinic input]
+_testcapi.exception_print
+    exception as exc: object
+    legacy: bool = False
+    /
+
+To test the format of exceptions as printed out.
+[clinic start generated code]*/
+
 static PyObject *
-exception_print(PyObject *self, PyObject *args)
+_testcapi_exception_print_impl(PyObject *module, PyObject *exc, int legacy)
+/*[clinic end generated code: output=3f04fe0c18412ae0 input=c76f42cb94136dbf]*/
 {
-    PyObject *exc;
-    int legacy = 0;
-
-    if (!PyArg_ParseTuple(args, "O|i:exception_print", &exc, &legacy)) {
-        return NULL;
-    }
     if (legacy) {
         PyObject *tb = NULL;
         if (PyExceptionInstance_Check(exc)) {
@@ -59,72 +80,111 @@ exception_print(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
-/* Test PyErr_NewExceptionWithDoc (also exercise PyErr_NewException).
-   Run via Lib/test/test_exceptions.py */
-static PyObject *
-make_exception_with_doc(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    const char *name;
-    const char *doc = NULL;
-    PyObject *base = NULL;
-    PyObject *dict = NULL;
+/*[clinic input]
+_testcapi.make_exception_with_doc
+    name: str
+    doc: str = NULL
+    base: object = NULL
+    dict: object = NULL
 
-    static char *kwlist[] = {"name", "doc", "base", "dict", NULL};
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
-                                     "s|sOO:make_exception_with_doc", kwlist,
-                                     &name, &doc, &base, &dict))
-    {
-        return NULL;
-    }
+Test PyErr_NewExceptionWithDoc (also exercise PyErr_NewException). Run via Lib/test/test_exceptions.py
+[clinic start generated code]*/
 
+static PyObject *
+_testcapi_make_exception_with_doc_impl(PyObject *module, const char *name,
+                                       const char *doc, PyObject *base,
+                                       PyObject *dict)
+/*[clinic end generated code: output=439f0d963c1ce2c4 input=23a73013f8a8795a]*/
+{
     return PyErr_NewExceptionWithDoc(name, doc, base, dict);
 }
 
+/*[clinic input]
+_testcapi.exc_set_object
+    exception as exc: object
+    obj: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-exc_set_object(PyObject *self, PyObject *args)
+_testcapi_exc_set_object_impl(PyObject *module, PyObject *exc, PyObject *obj)
+/*[clinic end generated code: output=34c8c7c83e5c8463 input=fc530aafb1b0a360]*/
 {
-    PyObject *exc;
-    PyObject *obj;
-
-    if (!PyArg_ParseTuple(args, "OO:exc_set_object", &exc, &obj)) {
-        return NULL;
-    }
-
     PyErr_SetObject(exc, obj);
     return NULL;
 }
 
+/*[clinic input]
+_testcapi.exc_set_object_fetch = _testcapi.exc_set_object
+[clinic start generated code]*/
+
 static PyObject *
-exc_set_object_fetch(PyObject *self, PyObject *args)
+_testcapi_exc_set_object_fetch_impl(PyObject *module, PyObject *exc,
+                                    PyObject *obj)
+/*[clinic end generated code: output=7a5ff5f6d3cf687f input=77ec686f1f95fa38]*/
 {
-    PyObject *exc;
-    PyObject *obj;
-    PyObject *type;
-    PyObject *value;
-    PyObject *tb;
-
-    if (!PyArg_ParseTuple(args, "OO:exc_set_object", &exc, &obj)) {
-        return NULL;
-    }
+    PyObject *type = UNINITIALIZED_PTR;
+    PyObject *value = UNINITIALIZED_PTR;
+    PyObject *tb = UNINITIALIZED_PTR;
 
     PyErr_SetObject(exc, obj);
     PyErr_Fetch(&type, &value, &tb);
+    assert(type != UNINITIALIZED_PTR);
+    assert(value != UNINITIALIZED_PTR);
+    assert(tb != UNINITIALIZED_PTR);
     Py_XDECREF(type);
     Py_XDECREF(tb);
     return value;
 }
 
+/*[clinic input]
+_testcapi.err_setstring
+    exc: object
+    value: str(zeroes=True, accept={robuffer, str, NoneType})
+    /
+[clinic start generated code]*/
+
 static PyObject *
-raise_exception(PyObject *self, PyObject *args)
+_testcapi_err_setstring_impl(PyObject *module, PyObject *exc,
+                             const char *value, Py_ssize_t value_length)
+/*[clinic end generated code: output=fba8705e5703dd3f input=e8a95fad66d9004b]*/
 {
-    PyObject *exc;
-    int num_args;
+    NULLABLE(exc);
+    PyErr_SetString(exc, value);
+    return NULL;
+}
 
-    if (!PyArg_ParseTuple(args, "Oi:raise_exception", &exc, &num_args)) {
-        return NULL;
-    }
+/*[clinic input]
+_testcapi.err_setfromerrnowithfilename
+    error: int
+    exc: object
+    value: str(zeroes=True, accept={robuffer, str, NoneType})
+    /
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_err_setfromerrnowithfilename_impl(PyObject *module, int error,
+                                            PyObject *exc, const char *value,
+                                            Py_ssize_t value_length)
+/*[clinic end generated code: output=d02df5749a01850e input=ff7c384234bf097f]*/
+{
+    NULLABLE(exc);
+    errno = error;
+    PyErr_SetFromErrnoWithFilename(exc, value);
+    return NULL;
+}
 
+/*[clinic input]
+_testcapi.raise_exception
+    exception as exc: object
+    num_args: int
+    /
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_raise_exception_impl(PyObject *module, PyObject *exc, int num_args)
+/*[clinic end generated code: output=eb0a9c5d69e0542d input=83d6262c3829d088]*/
+{
     PyObject *exc_args = PyTuple_New(num_args);
     if (exc_args == NULL) {
         return NULL;
@@ -142,21 +202,29 @@ raise_exception(PyObject *self, PyObject *args)
     return NULL;
 }
 
-/* reliably raise a MemoryError */
+/*[clinic input]
+_testcapi.raise_memoryerror
+[clinic start generated code]*/
+
 static PyObject *
-raise_memoryerror(PyObject *self, PyObject *Py_UNUSED(ignored))
+_testcapi_raise_memoryerror_impl(PyObject *module)
+/*[clinic end generated code: output=dd057803fb0131e6 input=6ca521bd07fb73cb]*/
 {
     return PyErr_NoMemory();
 }
 
+/*[clinic input]
+_testcapi.fatal_error
+    message: str(accept={robuffer})
+    release_gil: bool = False
+    /
+[clinic start generated code]*/
+
 static PyObject *
-test_fatal_error(PyObject *self, PyObject *args)
+_testcapi_fatal_error_impl(PyObject *module, const char *message,
+                           int release_gil)
+/*[clinic end generated code: output=9c3237116e6a03e8 input=1be357a2ccb04c8c]*/
 {
-    char *message;
-    int release_gil = 0;
-    if (!PyArg_ParseTuple(args, "y|i:fatal_error", &message, &release_gil)) {
-        return NULL;
-    }
     if (release_gil) {
         Py_BEGIN_ALLOW_THREADS
         Py_FatalError(message);
@@ -169,17 +237,20 @@ test_fatal_error(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.set_exc_info
+    new_type: object
+    new_value: object
+    new_tb: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-test_set_exc_info(PyObject *self, PyObject *args)
+_testcapi_set_exc_info_impl(PyObject *module, PyObject *new_type,
+                            PyObject *new_value, PyObject *new_tb)
+/*[clinic end generated code: output=b55fa35dec31300e input=ea9f19e0f55fe5b3]*/
 {
-    PyObject *new_type, *new_value, *new_tb;
-    PyObject *type, *value, *tb;
-    if (!PyArg_ParseTuple(args, "OOO:test_set_exc_info",
-                          &new_type, &new_value, &new_tb))
-    {
-        return NULL;
-    }
-
+    PyObject *type = UNINITIALIZED_PTR, *value = UNINITIALIZED_PTR, *tb = UNINITIALIZED_PTR;
     PyErr_GetExcInfo(&type, &value, &tb);
 
     Py_INCREF(new_type);
@@ -197,59 +268,97 @@ test_set_exc_info(PyObject *self, PyObject *args)
     return orig_exc;
 }
 
+/*[clinic input]
+_testcapi.set_exception
+    new_exc: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-test_set_exception(PyObject *self, PyObject *new_exc)
+_testcapi_set_exception(PyObject *module, PyObject *new_exc)
+/*[clinic end generated code: output=8b969b35d029e96d input=c89d4ca966c69738]*/
 {
     PyObject *exc = PyErr_GetHandledException();
     assert(PyExceptionInstance_Check(exc) || exc == NULL);
-
     PyErr_SetHandledException(new_exc);
     return exc;
 }
 
+/*[clinic input]
+_testcapi.traceback_print
+    traceback: object
+    file: object
+    /
+To test the format of tracebacks as printed out.
+[clinic start generated code]*/
+
 static PyObject *
-test_write_unraisable_exc(PyObject *self, PyObject *args)
+_testcapi_traceback_print_impl(PyObject *module, PyObject *traceback,
+                               PyObject *file)
+/*[clinic end generated code: output=17074ecf9d95cf30 input=9423f2857b008ca8]*/
 {
-    PyObject *exc, *err_msg, *obj;
-    if (!PyArg_ParseTuple(args, "OOO", &exc, &err_msg, &obj)) {
+    if (PyTraceBack_Print(traceback, file) < 0) {
         return NULL;
     }
+    Py_RETURN_NONE;
+}
 
-    const char *err_msg_utf8;
-    if (err_msg != Py_None) {
-        err_msg_utf8 = PyUnicode_AsUTF8(err_msg);
-        if (err_msg_utf8 == NULL) {
-            return NULL;
-        }
+static PyObject *
+err_writeunraisable(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *exc, *obj;
+    if (!PyArg_ParseTuple(args, "OO", &exc, &obj)) {
+        return NULL;
     }
-    else {
-        err_msg_utf8 = NULL;
+    NULLABLE(exc);
+    NULLABLE(obj);
+    if (exc) {
+        PyErr_SetRaisedException(Py_NewRef(exc));
     }
-
-    PyErr_SetObject((PyObject *)Py_TYPE(exc), exc);
-    _PyErr_WriteUnraisableMsg(err_msg_utf8, obj);
+    PyErr_WriteUnraisable(obj);
     Py_RETURN_NONE;
 }
 
-/* To test the format of tracebacks as printed out. */
 static PyObject *
-traceback_print(PyObject *self, PyObject *args)
+err_formatunraisable(PyObject *Py_UNUSED(module), PyObject *args)
 {
-    PyObject *file;
-    PyObject *traceback;
+    PyObject *exc;
+    const char *fmt;
+    Py_ssize_t fmtlen;
+    PyObject *objs[10] = {NULL};
 
-    if (!PyArg_ParseTuple(args, "OO:traceback_print",
-                            &traceback, &file))
+    if (!PyArg_ParseTuple(args, "Oz#|OOOOOOOOOO", &exc, &fmt, &fmtlen,
+            &objs[0], &objs[1], &objs[2], &objs[3], &objs[4],
+            &objs[5], &objs[6], &objs[7], &objs[8], &objs[9]))
     {
         return NULL;
     }
-
-    if (PyTraceBack_Print(traceback, file) < 0) {
-        return NULL;
+    NULLABLE(exc);
+    if (exc) {
+        PyErr_SetRaisedException(Py_NewRef(exc));
     }
+    PyErr_FormatUnraisable(fmt,
+            objs[0], objs[1], objs[2], objs[3], objs[4],
+            objs[5], objs[6], objs[7], objs[8], objs[9]);
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.unstable_exc_prep_reraise_star
+    orig: object
+    excs: object
+    /
+To test PyUnstable_Exc_PrepReraiseStar.
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_unstable_exc_prep_reraise_star_impl(PyObject *module,
+                                              PyObject *orig, PyObject *excs)
+/*[clinic end generated code: output=850cf008e0563c77 input=27fbcda2203eb301]*/
+{
+    return PyUnstable_Exc_PrepReraiseStar(orig, excs);
+}
+
 
 /*
  * Define the PyRecurdingInfinitelyError_Type
@@ -278,20 +387,22 @@ static PyTypeObject PyRecursingInfinitelyError_Type = {
 
 static PyMethodDef test_methods[] = {
     {"err_restore",             err_restore,                     METH_VARARGS},
-    {"err_set_raised",          err_set_raised,                  METH_O},
-    {"exception_print",         exception_print,                 METH_VARARGS},
-    {"fatal_error",             test_fatal_error,                METH_VARARGS,
-     PyDoc_STR("fatal_error(message, release_gil=False): call Py_FatalError(message)")},
-    {"make_exception_with_doc", _PyCFunction_CAST(make_exception_with_doc),
-     METH_VARARGS | METH_KEYWORDS},
-    {"exc_set_object",          exc_set_object,                  METH_VARARGS},
-    {"exc_set_object_fetch",    exc_set_object_fetch,            METH_VARARGS},
-    {"raise_exception",         raise_exception,                 METH_VARARGS},
-    {"raise_memoryerror",       raise_memoryerror,               METH_NOARGS},
-    {"set_exc_info",            test_set_exc_info,               METH_VARARGS},
-    {"set_exception",           test_set_exception,              METH_O},
-    {"traceback_print",         traceback_print,                 METH_VARARGS},
-    {"write_unraisable_exc",    test_write_unraisable_exc,       METH_VARARGS},
+    {"err_writeunraisable",     err_writeunraisable,             METH_VARARGS},
+    {"err_formatunraisable",    err_formatunraisable,            METH_VARARGS},
+    _TESTCAPI_ERR_SET_RAISED_METHODDEF
+    _TESTCAPI_EXCEPTION_PRINT_METHODDEF
+    _TESTCAPI_FATAL_ERROR_METHODDEF
+    _TESTCAPI_MAKE_EXCEPTION_WITH_DOC_METHODDEF
+    _TESTCAPI_EXC_SET_OBJECT_METHODDEF
+    _TESTCAPI_EXC_SET_OBJECT_FETCH_METHODDEF
+    _TESTCAPI_ERR_SETSTRING_METHODDEF
+    _TESTCAPI_ERR_SETFROMERRNOWITHFILENAME_METHODDEF
+    _TESTCAPI_RAISE_EXCEPTION_METHODDEF
+    _TESTCAPI_RAISE_MEMORYERROR_METHODDEF
+    _TESTCAPI_SET_EXC_INFO_METHODDEF
+    _TESTCAPI_SET_EXCEPTION_METHODDEF
+    _TESTCAPI_TRACEBACK_PRINT_METHODDEF
+    _TESTCAPI_UNSTABLE_EXC_PREP_RERAISE_STAR_METHODDEF
     {NULL},
 };
 
diff --git a/Modules/_testcapi/file.c b/Modules/_testcapi/file.c
new file mode 100644
index 00000000000000..634563f6ea12cb
--- /dev/null
+++ b/Modules/_testcapi/file.c
@@ -0,0 +1,17 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyMethodDef test_methods[] = {
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_File(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0){
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/float.c b/Modules/_testcapi/float.c
index 33cbda83a81af7..4fcbaf3bb2aa1e 100644
--- a/Modules/_testcapi/float.c
+++ b/Modules/_testcapi/float.c
@@ -1,9 +1,76 @@
-#define PY_SSIZE_T_CLEAN
+// clinic/float.c.h uses internal pycore_modsupport.h API
+#define PYTESTCAPI_NEED_INTERNAL_API
 
 #include "parts.h"
+#include "util.h"
 #include "clinic/float.c.h"
 
 
+static PyObject *
+float_check(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyFloat_Check(obj));
+}
+
+static PyObject *
+float_checkexact(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyFloat_CheckExact(obj));
+}
+
+static PyObject *
+float_fromstring(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyFloat_FromString(obj);
+}
+
+static PyObject *
+float_fromdouble(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    double d;
+
+    if (!PyArg_Parse(obj, "d", &d)) {
+        return NULL;
+    }
+
+    return PyFloat_FromDouble(d);
+}
+
+static PyObject *
+float_asdouble(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    double d;
+
+    NULLABLE(obj);
+    d = PyFloat_AsDouble(obj);
+    if (d == -1. && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return PyFloat_FromDouble(d);
+}
+
+static PyObject *
+float_getinfo(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(arg))
+{
+    return PyFloat_GetInfo();
+}
+
+static PyObject *
+float_getmax(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(arg))
+{
+    return PyFloat_FromDouble(PyFloat_GetMax());
+}
+
+static PyObject *
+float_getmin(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(arg))
+{
+    return PyFloat_FromDouble(PyFloat_GetMin());
+}
+
 /*[clinic input]
 module _testcapi
 [clinic start generated code]*/
@@ -98,6 +165,14 @@ _testcapi_float_unpack_impl(PyObject *module, const char *data,
 }
 
 static PyMethodDef test_methods[] = {
+    {"float_check", float_check, METH_O},
+    {"float_checkexact", float_checkexact, METH_O},
+    {"float_fromstring", float_fromstring, METH_O},
+    {"float_fromdouble", float_fromdouble, METH_O},
+    {"float_asdouble", float_asdouble, METH_O},
+    {"float_getinfo", float_getinfo, METH_NOARGS},
+    {"float_getmax", float_getmax, METH_NOARGS},
+    {"float_getmin", float_getmin, METH_NOARGS},
     _TESTCAPI_FLOAT_PACK_METHODDEF
     _TESTCAPI_FLOAT_UNPACK_METHODDEF
     {NULL},
diff --git a/Modules/_testcapi/getargs.c b/Modules/_testcapi/getargs.c
index aa201319950de7..33e8af7d7bbb39 100644
--- a/Modules/_testcapi/getargs.c
+++ b/Modules/_testcapi/getargs.c
@@ -3,8 +3,6 @@
  * APIs that parse and build arguments.
  */
 
-#define PY_SSIZE_T_CLEAN
-
 #include "parts.h"
 
 static PyObject *
@@ -15,9 +13,9 @@ parse_tuple_and_keywords(PyObject *self, PyObject *args)
     const char *sub_format;
     PyObject *sub_keywords;
 
-    double buffers[8][4]; /* double ensures alignment where necessary */
-    PyObject *converted[8];
-    char *keywords[8 + 1]; /* space for NULL at end */
+#define MAX_PARAMS 8
+    double buffers[MAX_PARAMS][4]; /* double ensures alignment where necessary */
+    char *keywords[MAX_PARAMS + 1]; /* space for NULL at end */
 
     PyObject *return_value = NULL;
 
@@ -37,11 +35,10 @@ parse_tuple_and_keywords(PyObject *self, PyObject *args)
     }
 
     memset(buffers, 0, sizeof(buffers));
-    memset(converted, 0, sizeof(converted));
     memset(keywords, 0, sizeof(keywords));
 
     Py_ssize_t size = PySequence_Fast_GET_SIZE(sub_keywords);
-    if (size > 8) {
+    if (size > MAX_PARAMS) {
         PyErr_SetString(PyExc_ValueError,
             "parse_tuple_and_keywords: too many keywords in sub_keywords");
         goto exit;
@@ -49,29 +46,60 @@ parse_tuple_and_keywords(PyObject *self, PyObject *args)
 
     for (Py_ssize_t i = 0; i < size; i++) {
         PyObject *o = PySequence_Fast_GET_ITEM(sub_keywords, i);
-        if (!PyUnicode_FSConverter(o, (void *)(converted + i))) {
+        if (PyUnicode_Check(o)) {
+            keywords[i] = (char *)PyUnicode_AsUTF8(o);
+            if (keywords[i] == NULL) {
+                goto exit;
+            }
+        }
+        else if (PyBytes_Check(o)) {
+            keywords[i] = PyBytes_AS_STRING(o);
+        }
+        else {
             PyErr_Format(PyExc_ValueError,
                 "parse_tuple_and_keywords: "
-                "could not convert keywords[%zd] to narrow string", i);
+                "keywords must be str or bytes", i);
             goto exit;
         }
-        keywords[i] = PyBytes_AS_STRING(converted[i]);
     }
 
+    assert(MAX_PARAMS == 8);
     int result = PyArg_ParseTupleAndKeywords(sub_args, sub_kwargs,
         sub_format, keywords,
         buffers + 0, buffers + 1, buffers + 2, buffers + 3,
         buffers + 4, buffers + 5, buffers + 6, buffers + 7);
 
     if (result) {
-        return_value = Py_NewRef(Py_None);
+        int objects_only = 1;
+        int count = 0;
+        for (const char *f = sub_format; *f; f++) {
+            if (Py_ISALNUM(*f)) {
+                if (strchr("OSUY", *f) == NULL) {
+                    objects_only = 0;
+                    break;
+                }
+                count++;
+            }
+        }
+        if (objects_only) {
+            return_value = PyTuple_New(count);
+            if (return_value == NULL) {
+                goto exit;
+            }
+            for (Py_ssize_t i = 0; i < count; i++) {
+                PyObject *arg = *(PyObject **)(buffers + i);
+                if (arg == NULL) {
+                    arg = Py_None;
+                }
+                PyTuple_SET_ITEM(return_value, i, Py_NewRef(arg));
+            }
+        }
+        else {
+            return_value = Py_NewRef(Py_None);
+        }
     }
 
 exit:
-    size = sizeof(converted) / sizeof(converted[0]);
-    for (Py_ssize_t i = 0; i < size; i++) {
-        Py_XDECREF(converted[i]);
-    }
     return return_value;
 }
 
@@ -114,32 +142,25 @@ getargs_w_star(PyObject *self, PyObject *args)
 }
 
 static PyObject *
-test_empty_argparse(PyObject *self, PyObject *Py_UNUSED(ignored))
+getargs_empty(PyObject *self, PyObject *args, PyObject *kwargs)
 {
     /* Test that formats can begin with '|'. See issue #4720. */
-    PyObject *dict = NULL;
-    static char *kwlist[] = {NULL};
-    PyObject *tuple = PyTuple_New(0);
-    if (!tuple) {
-        return NULL;
-    }
+    assert(PyTuple_CheckExact(args));
+    assert(kwargs == NULL || PyDict_CheckExact(kwargs));
+
     int result;
-    if (!(result = PyArg_ParseTuple(tuple, "|:test_empty_argparse"))) {
-        goto done;
-    }
-    dict = PyDict_New();
-    if (!dict) {
-        goto done;
-    }
-    result = PyArg_ParseTupleAndKeywords(tuple, dict, "|:test_empty_argparse",
-                                         kwlist);
-  done:
-    Py_DECREF(tuple);
-    Py_XDECREF(dict);
+    if (kwargs != NULL && PyDict_GET_SIZE(kwargs) > 0) {
+        static char *kwlist[] = {NULL};
+        result = PyArg_ParseTupleAndKeywords(args, kwargs, "|:getargs_empty",
+                                             kwlist);
+    }
+    else {
+        result = PyArg_ParseTuple(args, "|:getargs_empty");
+    }
     if (!result) {
         return NULL;
     }
-    Py_RETURN_NONE;
+    return PyLong_FromLong(result);
 }
 
 /* Test tuple argument processing */
@@ -330,75 +351,6 @@ getargs_K(PyObject *self, PyObject *args)
     return PyLong_FromUnsignedLongLong(value);
 }
 
-/* This function not only tests the 'k' getargs code, but also the
-   PyLong_AsUnsignedLongMask() function. */
-static PyObject *
-test_k_code(PyObject *self, PyObject *Py_UNUSED(ignored))
-{
-    PyObject *tuple, *num;
-    unsigned long value;
-
-    tuple = PyTuple_New(1);
-    if (tuple == NULL) {
-        return NULL;
-    }
-
-    /* a number larger than ULONG_MAX even on 64-bit platforms */
-    num = PyLong_FromString("FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
-    if (num == NULL) {
-        return NULL;
-    }
-
-    value = PyLong_AsUnsignedLongMask(num);
-    if (value != ULONG_MAX) {
-        PyErr_SetString(PyExc_AssertionError,
-            "test_k_code: "
-            "PyLong_AsUnsignedLongMask() returned wrong value for long 0xFFF...FFF");
-        return NULL;
-    }
-
-    PyTuple_SET_ITEM(tuple, 0, num);
-
-    value = 0;
-    if (!PyArg_ParseTuple(tuple, "k:test_k_code", &value)) {
-        return NULL;
-    }
-    if (value != ULONG_MAX) {
-        PyErr_SetString(PyExc_AssertionError,
-            "test_k_code: k code returned wrong value for long 0xFFF...FFF");
-        return NULL;
-    }
-
-    Py_DECREF(num);
-    num = PyLong_FromString("-FFFFFFFF000000000000000042", NULL, 16);
-    if (num == NULL) {
-        return NULL;
-    }
-
-    value = PyLong_AsUnsignedLongMask(num);
-    if (value != (unsigned long)-0x42) {
-        PyErr_SetString(PyExc_AssertionError,
-            "test_k_code: "
-            "PyLong_AsUnsignedLongMask() returned wrong value for long -0xFFF..000042");
-        return NULL;
-    }
-
-    PyTuple_SET_ITEM(tuple, 0, num);
-
-    value = 0;
-    if (!PyArg_ParseTuple(tuple, "k:test_k_code", &value)) {
-        return NULL;
-    }
-    if (value != (unsigned long)-0x42) {
-        PyErr_SetString(PyExc_AssertionError,
-            "test_k_code: k code returned wrong value for long -0xFFF..000042");
-        return NULL;
-    }
-
-    Py_DECREF(tuple);
-    Py_RETURN_NONE;
-}
-
 static PyObject *
 getargs_f(PyObject *self, PyObject *args)
 {
@@ -591,54 +543,6 @@ getargs_y_hash(PyObject *self, PyObject *args)
     return PyBytes_FromStringAndSize(str, size);
 }
 
-static PyObject *
-getargs_u(PyObject *self, PyObject *args)
-{
-    Py_UNICODE *str;
-    if (!PyArg_ParseTuple(args, "u", &str)) {
-        return NULL;
-    }
-    return PyUnicode_FromWideChar(str, -1);
-}
-
-static PyObject *
-getargs_u_hash(PyObject *self, PyObject *args)
-{
-    Py_UNICODE *str;
-    Py_ssize_t size;
-    if (!PyArg_ParseTuple(args, "u#", &str, &size)) {
-        return NULL;
-    }
-    return PyUnicode_FromWideChar(str, size);
-}
-
-static PyObject *
-getargs_Z(PyObject *self, PyObject *args)
-{
-    Py_UNICODE *str;
-    if (!PyArg_ParseTuple(args, "Z", &str)) {
-        return NULL;
-    }
-    if (str != NULL) {
-        return PyUnicode_FromWideChar(str, -1);
-    }
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-getargs_Z_hash(PyObject *self, PyObject *args)
-{
-    Py_UNICODE *str;
-    Py_ssize_t size;
-    if (!PyArg_ParseTuple(args, "Z#", &str, &size)) {
-        return NULL;
-    }
-    if (str != NULL) {
-        return PyUnicode_FromWideChar(str, size);
-    }
-    Py_RETURN_NONE;
-}
-
 static PyObject *
 getargs_es(PyObject *self, PyObject *args)
 {
@@ -727,133 +631,6 @@ getargs_et_hash(PyObject *self, PyObject *args)
     return result;
 }
 
-/* Test the L code for PyArg_ParseTuple.  This should deliver a long long
-   for both long and int arguments.  The test may leak a little memory if
-   it fails.
-*/
-static PyObject *
-test_L_code(PyObject *self, PyObject *Py_UNUSED(ignored))
-{
-    PyObject *tuple, *num;
-    long long value;
-
-    tuple = PyTuple_New(1);
-    if (tuple == NULL) {
-        return NULL;
-    }
-
-    num = PyLong_FromLong(42);
-    if (num == NULL) {
-        return NULL;
-    }
-
-    PyTuple_SET_ITEM(tuple, 0, num);
-
-    value = -1;
-    if (!PyArg_ParseTuple(tuple, "L:test_L_code", &value)) {
-        return NULL;
-    }
-    if (value != 42) {
-        PyErr_SetString(PyExc_AssertionError,
-            "test_L_code: L code returned wrong value for long 42");
-        return NULL;
-    }
-
-    Py_DECREF(num);
-    num = PyLong_FromLong(42);
-    if (num == NULL) {
-        return NULL;
-    }
-
-    PyTuple_SET_ITEM(tuple, 0, num);
-
-    value = -1;
-    if (!PyArg_ParseTuple(tuple, "L:test_L_code", &value)) {
-        return NULL;
-    }
-    if (value != 42) {
-        PyErr_SetString(PyExc_AssertionError,
-            "test_L_code: L code returned wrong value for int 42");
-        return NULL;
-    }
-
-    Py_DECREF(tuple);
-    Py_RETURN_NONE;
-}
-
-/* Test the s and z codes for PyArg_ParseTuple.
-*/
-static PyObject *
-test_s_code(PyObject *self, PyObject *Py_UNUSED(ignored))
-{
-    /* Unicode strings should be accepted */
-    PyObject *tuple = PyTuple_New(1);
-    if (tuple == NULL) {
-        return NULL;
-    }
-
-    PyObject *obj = PyUnicode_Decode("t\xeate", strlen("t\xeate"),
-                                     "latin-1", NULL);
-    if (obj == NULL) {
-        return NULL;
-    }
-
-    PyTuple_SET_ITEM(tuple, 0, obj);
-
-    /* These two blocks used to raise a TypeError:
-     * "argument must be string without null bytes, not str"
-     */
-    char *value;
-    if (!PyArg_ParseTuple(tuple, "s:test_s_code1", &value)) {
-        return NULL;
-    }
-
-    if (!PyArg_ParseTuple(tuple, "z:test_s_code2", &value)) {
-        return NULL;
-    }
-
-    Py_DECREF(tuple);
-    Py_RETURN_NONE;
-}
-
-#undef PyArg_ParseTupleAndKeywords
-PyAPI_FUNC(int) PyArg_ParseTupleAndKeywords(PyObject *, PyObject *,
-                                            const char *, char **, ...);
-
-static PyObject *
-getargs_s_hash_int(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    static char *keywords[] = {"", "", "x", NULL};
-    Py_buffer buf = {NULL};
-    const char *s;
-    int len;
-    int i = 0;
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "w*|s#i", keywords,
-                                     &buf, &s, &len, &i))
-    {
-        return NULL;
-    }
-    PyBuffer_Release(&buf);
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-getargs_s_hash_int2(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    static char *keywords[] = {"", "", "x", NULL};
-    Py_buffer buf = {NULL};
-    const char *s;
-    int len;
-    int i = 0;
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "w*|(s#)i", keywords,
-                                     &buf, &s, &len, &i))
-    {
-        return NULL;
-    }
-    PyBuffer_Release(&buf);
-    Py_RETURN_NONE;
-}
-
 static PyObject *
 gh_99240_clear_args(PyObject *self, PyObject *args)
 {
@@ -885,8 +662,6 @@ static PyMethodDef test_methods[] = {
     {"getargs_S",               getargs_S,                       METH_VARARGS},
     {"getargs_U",               getargs_U,                       METH_VARARGS},
     {"getargs_Y",               getargs_Y,                       METH_VARARGS},
-    {"getargs_Z",               getargs_Z,                       METH_VARARGS},
-    {"getargs_Z_hash",          getargs_Z_hash,                  METH_VARARGS},
     {"getargs_b",               getargs_b,                       METH_VARARGS},
     {"getargs_c",               getargs_c,                       METH_VARARGS},
     {"getargs_d",               getargs_d,                       METH_VARARGS},
@@ -906,13 +681,10 @@ static PyMethodDef test_methods[] = {
     {"getargs_positional_only_and_keywords", _PyCFunction_CAST(getargs_positional_only_and_keywords), METH_VARARGS|METH_KEYWORDS},
     {"getargs_s",               getargs_s,                       METH_VARARGS},
     {"getargs_s_hash",          getargs_s_hash,                  METH_VARARGS},
-    {"getargs_s_hash_int", _PyCFunction_CAST(getargs_s_hash_int), METH_VARARGS|METH_KEYWORDS},
-    {"getargs_s_hash_int2", _PyCFunction_CAST(getargs_s_hash_int2), METH_VARARGS|METH_KEYWORDS},
     {"getargs_s_star",          getargs_s_star,                  METH_VARARGS},
     {"getargs_tuple",           getargs_tuple,                   METH_VARARGS},
-    {"getargs_u",               getargs_u,                       METH_VARARGS},
-    {"getargs_u_hash",          getargs_u_hash,                  METH_VARARGS},
     {"getargs_w_star",          getargs_w_star,                  METH_VARARGS},
+    {"getargs_empty",           _PyCFunction_CAST(getargs_empty), METH_VARARGS|METH_KEYWORDS},
     {"getargs_y",               getargs_y,                       METH_VARARGS},
     {"getargs_y_hash",          getargs_y_hash,                  METH_VARARGS},
     {"getargs_y_star",          getargs_y_star,                  METH_VARARGS},
@@ -920,10 +692,6 @@ static PyMethodDef test_methods[] = {
     {"getargs_z_hash",          getargs_z_hash,                  METH_VARARGS},
     {"getargs_z_star",          getargs_z_star,                  METH_VARARGS},
     {"parse_tuple_and_keywords", parse_tuple_and_keywords,       METH_VARARGS},
-    {"test_L_code",             test_L_code,                     METH_NOARGS},
-    {"test_empty_argparse",     test_empty_argparse,             METH_NOARGS},
-    {"test_k_code",             test_k_code,                     METH_NOARGS},
-    {"test_s_code",             test_s_code,                     METH_NOARGS},
     {"gh_99240_clear_args",     gh_99240_clear_args,             METH_VARARGS},
     {NULL},
 };
diff --git a/Modules/_testcapi/hash.c b/Modules/_testcapi/hash.c
new file mode 100644
index 00000000000000..aee76787dcddb3
--- /dev/null
+++ b/Modules/_testcapi/hash.c
@@ -0,0 +1,72 @@
+#include "parts.h"
+#include "util.h"
+
+static PyObject *
+hash_getfuncdef(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    // bind PyHash_GetFuncDef()
+    PyHash_FuncDef *def = PyHash_GetFuncDef();
+
+    PyObject *types = PyImport_ImportModule("types");
+    if (types == NULL) {
+        return NULL;
+    }
+
+    PyObject *result = PyObject_CallMethod(types, "SimpleNamespace", NULL);
+    Py_DECREF(types);
+    if (result == NULL) {
+        return NULL;
+    }
+
+    // ignore PyHash_FuncDef.hash
+
+    PyObject *value = PyUnicode_FromString(def->name);
+    int res = PyObject_SetAttrString(result, "name", value);
+    Py_DECREF(value);
+    if (res < 0) {
+        return NULL;
+    }
+
+    value = PyLong_FromLong(def->hash_bits);
+    res = PyObject_SetAttrString(result, "hash_bits", value);
+    Py_DECREF(value);
+    if (res < 0) {
+        return NULL;
+    }
+
+    value = PyLong_FromLong(def->seed_bits);
+    res = PyObject_SetAttrString(result, "seed_bits", value);
+    Py_DECREF(value);
+    if (res < 0) {
+        return NULL;
+    }
+
+    return result;
+}
+
+
+static PyObject *
+hash_pointer(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    void *ptr = PyLong_AsVoidPtr(arg);
+    if (ptr == NULL && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    Py_hash_t hash = Py_HashPointer(ptr);
+    Py_BUILD_ASSERT(sizeof(long long) >= sizeof(hash));
+    return PyLong_FromLongLong(hash);
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"hash_getfuncdef", hash_getfuncdef, METH_NOARGS},
+    {"hash_pointer", hash_pointer, METH_O},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Hash(PyObject *m)
+{
+    return PyModule_AddFunctions(m, test_methods);
+}
diff --git a/Modules/_testcapi/heaptype.c b/Modules/_testcapi/heaptype.c
index 3488e35922c5ac..4526583a8059d9 100644
--- a/Modules/_testcapi/heaptype.c
+++ b/Modules/_testcapi/heaptype.c
@@ -1,5 +1,6 @@
 #include "parts.h"
-#include "structmember.h"         // PyMemberDef
+#include <stddef.h>               // offsetof()
+
 
 static struct PyModuleDef *_testcapimodule = NULL;  // set at initialization
 
@@ -332,7 +333,7 @@ typedef struct {
 
 
 static struct PyMemberDef members_to_repeat[] = {
-    {"T_INT", T_INT, offsetof(HeapCTypeWithDataObject, data), 0, NULL},
+    {"Py_T_INT", Py_T_INT, offsetof(HeapCTypeWithDataObject, data), 0, NULL},
     {NULL}
 };
 
@@ -477,7 +478,7 @@ typedef struct {
 } HeapCTypeObject;
 
 static struct PyMemberDef heapctype_members[] = {
-    {"value", T_INT, offsetof(HeapCTypeObject, value)},
+    {"value", Py_T_INT, offsetof(HeapCTypeObject, value)},
     {NULL} /* Sentinel */
 };
 
@@ -571,7 +572,7 @@ heapctypesubclass_init(PyObject *self, PyObject *args, PyObject *kwargs)
 }
 
 static struct PyMemberDef heapctypesubclass_members[] = {
-    {"value2", T_INT, offsetof(HeapCTypeSubclassObject, value2)},
+    {"value2", Py_T_INT, offsetof(HeapCTypeSubclassObject, value2)},
     {NULL} /* Sentinel */
 };
 
@@ -661,8 +662,11 @@ heapctypesubclasswithfinalizer_finalize(PyObject *self)
         goto cleanup_finalize;
     }
     oldtype = PyObject_GetAttrString(m, "HeapCTypeSubclassWithFinalizer");
+    if (oldtype == NULL) {
+        goto cleanup_finalize;
+    }
     newtype = PyObject_GetAttrString(m, "HeapCTypeSubclass");
-    if (oldtype == NULL || newtype == NULL) {
+    if (newtype == NULL) {
         goto cleanup_finalize;
     }
 
@@ -741,6 +745,12 @@ static PyType_Spec HeapCTypeMetaclassCustomNew_spec = {
     HeapCTypeMetaclassCustomNew_slots
 };
 
+static PyType_Spec HeapCTypeMetaclassNullNew_spec = {
+    .name = "_testcapi.HeapCTypeMetaclassNullNew",
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+    .slots = empty_type_slots
+};
+
 
 typedef struct {
     PyObject_HEAD
@@ -763,8 +773,8 @@ static PyGetSetDef heapctypewithdict_getsetlist[] = {
 };
 
 static struct PyMemberDef heapctypewithdict_members[] = {
-    {"dictobj", T_OBJECT, offsetof(HeapCTypeWithDictObject, dict)},
-    {"__dictoffset__", T_PYSSIZET, offsetof(HeapCTypeWithDictObject, dict), READONLY},
+    {"dictobj", _Py_T_OBJECT, offsetof(HeapCTypeWithDictObject, dict)},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(HeapCTypeWithDictObject, dict), Py_READONLY},
     {NULL} /* Sentinel */
 };
 
@@ -795,13 +805,13 @@ static int
 heapmanaged_traverse(HeapCTypeObject *self, visitproc visit, void *arg)
 {
     Py_VISIT(Py_TYPE(self));
-    return _PyObject_VisitManagedDict((PyObject *)self, visit, arg);
+    return PyObject_VisitManagedDict((PyObject *)self, visit, arg);
 }
 
 static int
 heapmanaged_clear(HeapCTypeObject *self)
 {
-    _PyObject_ClearManagedDict((PyObject *)self);
+    PyObject_ClearManagedDict((PyObject *)self);
     return 0;
 }
 
@@ -809,7 +819,7 @@ static void
 heapmanaged_dealloc(HeapCTypeObject *self)
 {
     PyTypeObject *tp = Py_TYPE(self);
-    _PyObject_ClearManagedDict((PyObject *)self);
+    PyObject_ClearManagedDict((PyObject *)self);
     PyObject_GC_UnTrack(self);
     PyObject_GC_Del(self);
     Py_DECREF(tp);
@@ -858,8 +868,8 @@ static PyType_Spec  HeapCTypeWithManagedWeakref_spec = {
 };
 
 static struct PyMemberDef heapctypewithnegativedict_members[] = {
-    {"dictobj", T_OBJECT, offsetof(HeapCTypeWithDictObject, dict)},
-    {"__dictoffset__", T_PYSSIZET, -(Py_ssize_t)sizeof(void*), READONLY},
+    {"dictobj", _Py_T_OBJECT, offsetof(HeapCTypeWithDictObject, dict)},
+    {"__dictoffset__", Py_T_PYSSIZET, -(Py_ssize_t)sizeof(void*), Py_READONLY},
     {NULL} /* Sentinel */
 };
 
@@ -884,9 +894,9 @@ typedef struct {
 } HeapCTypeWithWeakrefObject;
 
 static struct PyMemberDef heapctypewithweakref_members[] = {
-    {"weakreflist", T_OBJECT, offsetof(HeapCTypeWithWeakrefObject, weakreflist)},
-    {"__weaklistoffset__", T_PYSSIZET,
-      offsetof(HeapCTypeWithWeakrefObject, weakreflist), READONLY},
+    {"weakreflist", _Py_T_OBJECT, offsetof(HeapCTypeWithWeakrefObject, weakreflist)},
+    {"__weaklistoffset__", Py_T_PYSSIZET,
+      offsetof(HeapCTypeWithWeakrefObject, weakreflist), Py_READONLY},
     {NULL} /* Sentinel */
 };
 
@@ -934,7 +944,7 @@ typedef struct {
 } HeapCTypeSetattrObject;
 
 static struct PyMemberDef heapctypesetattr_members[] = {
-    {"pvalue", T_LONG, offsetof(HeapCTypeSetattrObject, value)},
+    {"pvalue", Py_T_LONG, offsetof(HeapCTypeSetattrObject, value)},
     {NULL} /* Sentinel */
 };
 
@@ -1113,94 +1123,62 @@ _PyTestCapi_Init_Heaptype(PyObject *m) {
         return -1;
     }
 
+#define ADD(name, value) do { \
+        if (PyModule_Add(m, name, value) < 0) { \
+            return -1; \
+        } \
+    } while (0)
+
     PyObject *HeapDocCType = PyType_FromSpec(&HeapDocCType_spec);
-    if (HeapDocCType == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapDocCType", HeapDocCType);
+    ADD("HeapDocCType", HeapDocCType);
 
     /* bpo-41832: Add a new type to test PyType_FromSpec()
        now can accept a NULL tp_doc slot. */
     PyObject *NullTpDocType = PyType_FromSpec(&NullTpDocType_spec);
-    if (NullTpDocType == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "NullTpDocType", NullTpDocType);
+    ADD("NullTpDocType", NullTpDocType);
 
     PyObject *HeapGcCType = PyType_FromSpec(&HeapGcCType_spec);
-    if (HeapGcCType == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapGcCType", HeapGcCType);
+    ADD("HeapGcCType", HeapGcCType);
 
     PyObject *HeapCType = PyType_FromSpec(&HeapCType_spec);
     if (HeapCType == NULL) {
         return -1;
     }
     PyObject *subclass_bases = PyTuple_Pack(1, HeapCType);
+    Py_DECREF(HeapCType);
     if (subclass_bases == NULL) {
         return -1;
     }
     PyObject *HeapCTypeSubclass = PyType_FromSpecWithBases(&HeapCTypeSubclass_spec, subclass_bases);
-    if (HeapCTypeSubclass == NULL) {
-        return -1;
-    }
     Py_DECREF(subclass_bases);
-    PyModule_AddObject(m, "HeapCTypeSubclass", HeapCTypeSubclass);
+    ADD("HeapCTypeSubclass", HeapCTypeSubclass);
 
     PyObject *HeapCTypeWithDict = PyType_FromSpec(&HeapCTypeWithDict_spec);
-    if (HeapCTypeWithDict == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithDict", HeapCTypeWithDict);
+    ADD("HeapCTypeWithDict", HeapCTypeWithDict);
 
     PyObject *HeapCTypeWithDict2 = PyType_FromSpec(&HeapCTypeWithDict2_spec);
-    if (HeapCTypeWithDict2 == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithDict2", HeapCTypeWithDict2);
+    ADD("HeapCTypeWithDict2", HeapCTypeWithDict2);
 
     PyObject *HeapCTypeWithNegativeDict = PyType_FromSpec(&HeapCTypeWithNegativeDict_spec);
-    if (HeapCTypeWithNegativeDict == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithNegativeDict", HeapCTypeWithNegativeDict);
+    ADD("HeapCTypeWithNegativeDict", HeapCTypeWithNegativeDict);
 
     PyObject *HeapCTypeWithManagedDict = PyType_FromSpec(&HeapCTypeWithManagedDict_spec);
-    if (HeapCTypeWithManagedDict == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithManagedDict", HeapCTypeWithManagedDict);
+    ADD("HeapCTypeWithManagedDict", HeapCTypeWithManagedDict);
 
     PyObject *HeapCTypeWithManagedWeakref = PyType_FromSpec(&HeapCTypeWithManagedWeakref_spec);
-    if (HeapCTypeWithManagedWeakref == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithManagedWeakref", HeapCTypeWithManagedWeakref);
+    ADD("HeapCTypeWithManagedWeakref", HeapCTypeWithManagedWeakref);
 
     PyObject *HeapCTypeWithWeakref = PyType_FromSpec(&HeapCTypeWithWeakref_spec);
-    if (HeapCTypeWithWeakref == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithWeakref", HeapCTypeWithWeakref);
+    ADD("HeapCTypeWithWeakref", HeapCTypeWithWeakref);
 
     PyObject *HeapCTypeWithWeakref2 = PyType_FromSpec(&HeapCTypeWithWeakref2_spec);
-    if (HeapCTypeWithWeakref2 == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithWeakref2", HeapCTypeWithWeakref2);
+    ADD("HeapCTypeWithWeakref2", HeapCTypeWithWeakref2);
 
     PyObject *HeapCTypeWithBuffer = PyType_FromSpec(&HeapCTypeWithBuffer_spec);
-    if (HeapCTypeWithBuffer == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeWithBuffer", HeapCTypeWithBuffer);
+    ADD("HeapCTypeWithBuffer", HeapCTypeWithBuffer);
 
     PyObject *HeapCTypeSetattr = PyType_FromSpec(&HeapCTypeSetattr_spec);
-    if (HeapCTypeSetattr == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeSetattr", HeapCTypeSetattr);
+    ADD("HeapCTypeSetattr", HeapCTypeSetattr);
 
     PyObject *subclass_with_finalizer_bases = PyTuple_Pack(1, HeapCTypeSubclass);
     if (subclass_with_finalizer_bases == NULL) {
@@ -1208,25 +1186,20 @@ _PyTestCapi_Init_Heaptype(PyObject *m) {
     }
     PyObject *HeapCTypeSubclassWithFinalizer = PyType_FromSpecWithBases(
         &HeapCTypeSubclassWithFinalizer_spec, subclass_with_finalizer_bases);
-    if (HeapCTypeSubclassWithFinalizer == NULL) {
-        return -1;
-    }
     Py_DECREF(subclass_with_finalizer_bases);
-    PyModule_AddObject(m, "HeapCTypeSubclassWithFinalizer", HeapCTypeSubclassWithFinalizer);
+    ADD("HeapCTypeSubclassWithFinalizer", HeapCTypeSubclassWithFinalizer);
 
     PyObject *HeapCTypeMetaclass = PyType_FromMetaclass(
         &PyType_Type, m, &HeapCTypeMetaclass_spec, (PyObject *) &PyType_Type);
-    if (HeapCTypeMetaclass == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeMetaclass", HeapCTypeMetaclass);
+    ADD("HeapCTypeMetaclass", HeapCTypeMetaclass);
 
     PyObject *HeapCTypeMetaclassCustomNew = PyType_FromMetaclass(
         &PyType_Type, m, &HeapCTypeMetaclassCustomNew_spec, (PyObject *) &PyType_Type);
-    if (HeapCTypeMetaclassCustomNew == NULL) {
-        return -1;
-    }
-    PyModule_AddObject(m, "HeapCTypeMetaclassCustomNew", HeapCTypeMetaclassCustomNew);
+    ADD("HeapCTypeMetaclassCustomNew", HeapCTypeMetaclassCustomNew);
+
+    PyObject *HeapCTypeMetaclassNullNew = PyType_FromMetaclass(
+        &PyType_Type, m, &HeapCTypeMetaclassNullNew_spec, (PyObject *) &PyType_Type);
+    ADD("HeapCTypeMetaclassNullNew", HeapCTypeMetaclassNullNew);
 
     PyObject *HeapCCollection = PyType_FromMetaclass(
         NULL, m, &HeapCCollection_spec, NULL);
diff --git a/Modules/_testcapi/heaptype_relative.c b/Modules/_testcapi/heaptype_relative.c
index c247ca33b33708..52286f05f7154c 100644
--- a/Modules/_testcapi/heaptype_relative.c
+++ b/Modules/_testcapi/heaptype_relative.c
@@ -1,10 +1,15 @@
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
 #define Py_LIMITED_API 0x030c0000 // 3.12
+#endif
+
 #include "parts.h"
 #include <stddef.h>               // max_align_t
 #include <string.h>               // memset
 
-#ifdef LIMITED_API_AVAILABLE
-
 static PyType_Slot empty_slots[] = {
     {0, NULL},
 };
@@ -339,5 +344,3 @@ _PyTestCapi_Init_HeaptypeRelative(PyObject *m) {
 
     return 0;
 }
-
-#endif // LIMITED_API_AVAILABLE
diff --git a/Modules/_testcapi/list.c b/Modules/_testcapi/list.c
new file mode 100644
index 00000000000000..10e18699f01bc1
--- /dev/null
+++ b/Modules/_testcapi/list.c
@@ -0,0 +1,216 @@
+#include "parts.h"
+#include "util.h"
+
+static PyObject *
+list_check(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyList_Check(obj));
+}
+
+static PyObject *
+list_check_exact(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyList_CheckExact(obj));
+}
+
+static PyObject *
+list_new(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    return PyList_New(PyLong_AsSsize_t(obj));
+}
+
+static PyObject *
+list_size(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyList_Size(obj));
+}
+
+static PyObject *
+list_get_size(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyList_GET_SIZE(obj));
+}
+
+static PyObject *
+list_getitem(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "On", &obj, &i)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return Py_XNewRef(PyList_GetItem(obj, i));
+}
+
+static PyObject *
+list_get_item(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "On", &obj, &i)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return Py_XNewRef(PyList_GET_ITEM(obj, i));
+}
+
+static PyObject *
+list_setitem(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "OnO", &obj, &i, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(value);
+    RETURN_INT(PyList_SetItem(obj, i, Py_XNewRef(value)));
+
+}
+
+static PyObject *
+list_set_item(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "OnO", &obj, &i, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(value);
+    PyList_SET_ITEM(obj, i, Py_XNewRef(value));
+    Py_RETURN_NONE;
+
+}
+
+static PyObject *
+list_insert(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value;
+    Py_ssize_t where;
+    if (!PyArg_ParseTuple(args, "OnO", &obj, &where, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(value);
+    RETURN_INT(PyList_Insert(obj, where, Py_XNewRef(value)));
+
+}
+
+static PyObject *
+list_append(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(value);
+    RETURN_INT(PyList_Append(obj, value));
+}
+
+static PyObject *
+list_getslice(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t ilow, ihigh;
+    if (!PyArg_ParseTuple(args, "Onn", &obj, &ilow, &ihigh)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return PyList_GetSlice(obj, ilow, ihigh);
+
+}
+
+static PyObject *
+list_setslice(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value;
+    Py_ssize_t ilow, ihigh;
+    if (!PyArg_ParseTuple(args, "OnnO", &obj, &ilow, &ihigh, &value)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(value);
+    RETURN_INT(PyList_SetSlice(obj, ilow, ihigh, value));
+}
+
+static PyObject *
+list_sort(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyList_Sort(obj));
+}
+
+static PyObject *
+list_reverse(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyList_Reverse(obj));
+}
+
+static PyObject *
+list_astuple(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyList_AsTuple(obj);
+}
+
+
+static PyObject *
+list_clear(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyList_Clear(obj));
+}
+
+
+static PyObject *
+list_extend(PyObject* Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *arg;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &arg)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(arg);
+    RETURN_INT(PyList_Extend(obj, arg));
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"list_check", list_check, METH_O},
+    {"list_check_exact", list_check_exact, METH_O},
+    {"list_new", list_new, METH_O},
+    {"list_size", list_size, METH_O},
+    {"list_get_size", list_get_size, METH_O},
+    {"list_getitem", list_getitem, METH_VARARGS},
+    {"list_get_item", list_get_item, METH_VARARGS},
+    {"list_setitem", list_setitem, METH_VARARGS},
+    {"list_set_item", list_set_item, METH_VARARGS},
+    {"list_insert", list_insert, METH_VARARGS},
+    {"list_append", list_append, METH_VARARGS},
+    {"list_getslice", list_getslice, METH_VARARGS},
+    {"list_setslice", list_setslice, METH_VARARGS},
+    {"list_sort", list_sort, METH_O},
+    {"list_reverse", list_reverse, METH_O},
+    {"list_astuple", list_astuple, METH_O},
+    {"list_clear", list_clear, METH_O},
+    {"list_extend", list_extend, METH_VARARGS},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_List(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/long.c b/Modules/_testcapi/long.c
index 1be8de5e576254..32ad8d32ab8523 100644
--- a/Modules/_testcapi/long.c
+++ b/Modules/_testcapi/long.c
@@ -1,4 +1,15 @@
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "parts.h"
+#include "util.h"
+#include "clinic/long.c.h"
+
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
 
 
 static PyObject *
@@ -31,6 +42,9 @@ raise_test_long_error(const char* msg)
     return raiseTestError("test_long_api", msg);
 }
 
+// Test PyLong_FromLong()/PyLong_AsLong()
+// and PyLong_FromUnsignedLong()/PyLong_AsUnsignedLong().
+
 #define TESTNAME        test_long_api_inner
 #define TYPENAME        long
 #define F_S_TO_PY       PyLong_FromLong
@@ -40,8 +54,13 @@ raise_test_long_error(const char* msg)
 
 #include "testcapi_long.h"
 
+/*[clinic input]
+_testcapi.test_long_api
+[clinic start generated code]*/
+
 static PyObject *
-test_long_api(PyObject* self, PyObject *Py_UNUSED(ignored))
+_testcapi_test_long_api_impl(PyObject *module)
+/*[clinic end generated code: output=4405798ca1e9f444 input=e9b8880d7331c688]*/
 {
     return TESTNAME(raise_test_long_error);
 }
@@ -53,6 +72,9 @@ test_long_api(PyObject* self, PyObject *Py_UNUSED(ignored))
 #undef F_U_TO_PY
 #undef F_PY_TO_U
 
+// Test PyLong_FromLongLong()/PyLong_AsLongLong()
+// and PyLong_FromUnsignedLongLong()/PyLong_AsUnsignedLongLong().
+
 static PyObject *
 raise_test_longlong_error(const char* msg)
 {
@@ -68,8 +90,13 @@ raise_test_longlong_error(const char* msg)
 
 #include "testcapi_long.h"
 
+/*[clinic input]
+_testcapi.test_longlong_api
+[clinic start generated code]*/
+
 static PyObject *
-test_longlong_api(PyObject* self, PyObject *args)
+_testcapi_test_longlong_api_impl(PyObject *module)
+/*[clinic end generated code: output=2b3414ba8c31dfe6 input=ccbb2a48c2b3c4a5]*/
 {
     return TESTNAME(raise_test_longlong_error);
 }
@@ -81,13 +108,19 @@ test_longlong_api(PyObject* self, PyObject *args)
 #undef F_U_TO_PY
 #undef F_PY_TO_U
 
-/* Test the PyLong_AsLongAndOverflow API. General conversion to PY_LONG
-   is tested by test_long_api_inner. This test will concentrate on proper
-   handling of overflow.
-*/
+
+/*[clinic input]
+_testcapi.test_long_and_overflow
+
+Test the PyLong_AsLongAndOverflow API.
+
+General conversion to PY_LONG is tested by test_long_api_inner.
+This test will concentrate on proper handling of overflow.
+[clinic start generated code]*/
 
 static PyObject *
-test_long_and_overflow(PyObject *self, PyObject *Py_UNUSED(ignored))
+_testcapi_test_long_and_overflow_impl(PyObject *module)
+/*[clinic end generated code: output=f8460ca115e31d8e input=762f6b62da0a3cdc]*/
 {
     PyObject *num, *one, *temp;
     long value;
@@ -243,13 +276,18 @@ test_long_and_overflow(PyObject *self, PyObject *Py_UNUSED(ignored))
     Py_RETURN_NONE;
 }
 
-/* Test the PyLong_AsLongLongAndOverflow API. General conversion to
-   long long is tested by test_long_api_inner. This test will
-   concentrate on proper handling of overflow.
-*/
+/*[clinic input]
+_testcapi.test_long_long_and_overflow
+
+Test the PyLong_AsLongLongAndOverflow API.
+
+General conversion to long long is tested by test_long_api_inner.
+This test will concentrate on proper handling of overflow.
+[clinic start generated code]*/
 
 static PyObject *
-test_long_long_and_overflow(PyObject *self, PyObject *Py_UNUSED(ignored))
+_testcapi_test_long_long_and_overflow_impl(PyObject *module)
+/*[clinic end generated code: output=0b92330786f45483 input=544bb0aefe5e8a9e]*/
 {
     PyObject *num, *one, *temp;
     long long value;
@@ -405,13 +443,18 @@ test_long_long_and_overflow(PyObject *self, PyObject *Py_UNUSED(ignored))
     Py_RETURN_NONE;
 }
 
-/* Test the PyLong_As{Size,Ssize}_t API. At present this just tests that
-   non-integer arguments are handled correctly. It should be extended to
-   test overflow handling.
- */
+/*[clinic input]
+_testcapi.test_long_as_size_t
+
+Test the PyLong_As{Size,Ssize}_t API.
+
+At present this just tests that non-integer arguments are handled correctly.
+It should be extended to test overflow handling.
+[clinic start generated code]*/
 
 static PyObject *
-test_long_as_size_t(PyObject *self, PyObject *Py_UNUSED(ignored))
+_testcapi_test_long_as_size_t_impl(PyObject *module)
+/*[clinic end generated code: output=f6490ea2b41e6173 input=922990c4a3edfb0d]*/
 {
     size_t out_u;
     Py_ssize_t out_s;
@@ -442,9 +485,13 @@ test_long_as_size_t(PyObject *self, PyObject *Py_UNUSED(ignored))
     return Py_None;
 }
 
+/*[clinic input]
+_testcapi.test_long_as_unsigned_long_long_mask
+[clinic start generated code]*/
+
 static PyObject *
-test_long_as_unsigned_long_long_mask(PyObject *self,
-                                     PyObject *Py_UNUSED(ignored))
+_testcapi_test_long_as_unsigned_long_long_mask_impl(PyObject *module)
+/*[clinic end generated code: output=e3e16cd0189440cc input=eb2438493ae7b9af]*/
 {
     unsigned long long res = PyLong_AsUnsignedLongLongMask(NULL);
 
@@ -462,12 +509,13 @@ test_long_as_unsigned_long_long_mask(PyObject *self,
     Py_RETURN_NONE;
 }
 
-/* Test the PyLong_AsDouble API. At present this just tests that
-   non-integer arguments are handled correctly.
- */
+/*[clinic input]
+_testcapi.test_long_as_double
+[clinic start generated code]*/
 
 static PyObject *
-test_long_as_double(PyObject *self, PyObject *Py_UNUSED(ignored))
+_testcapi_test_long_as_double_impl(PyObject *module)
+/*[clinic end generated code: output=deca0898e15adde5 input=c77bc88ef5a1de76]*/
 {
     double out;
 
@@ -487,62 +535,275 @@ test_long_as_double(PyObject *self, PyObject *Py_UNUSED(ignored))
     return Py_None;
 }
 
-/* Simple test of _PyLong_NumBits and _PyLong_Sign. */
+/*[clinic input]
+_testcapi.call_long_compact_api
+    arg: object
+    /
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_call_long_compact_api(PyObject *module, PyObject *arg)
+/*[clinic end generated code: output=7e3894f611b1b2b7 input=87b87396967af14c]*/
+
+{
+    assert(PyLong_Check(arg));
+    int is_compact = PyUnstable_Long_IsCompact((PyLongObject*)arg);
+    Py_ssize_t value = -1;
+    if (is_compact) {
+        value = PyUnstable_Long_CompactValue((PyLongObject*)arg);
+    }
+    return Py_BuildValue("in", is_compact, value);
+}
+
+static PyObject *
+pylong_check(PyObject *module, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyLong_Check(obj));
+}
+
+static PyObject *
+pylong_checkexact(PyObject *module, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyLong_CheckExact(obj));
+}
+
+static PyObject *
+pylong_fromdouble(PyObject *module, PyObject *arg)
+{
+    double value;
+    if (!PyArg_Parse(arg, "d", &value)) {
+        return NULL;
+    }
+    return PyLong_FromDouble(value);
+}
+
 static PyObject *
-test_long_numbits(PyObject *self, PyObject *Py_UNUSED(ignored))
+pylong_fromstring(PyObject *module, PyObject *args)
 {
-    struct triple {
-        long input;
-        size_t nbits;
-        int sign;
-    } testcases[] = {{0, 0, 0},
-                     {1L, 1, 1},
-                     {-1L, 1, -1},
-                     {2L, 2, 1},
-                     {-2L, 2, -1},
-                     {3L, 2, 1},
-                     {-3L, 2, -1},
-                     {4L, 3, 1},
-                     {-4L, 3, -1},
-                     {0x7fffL, 15, 1},          /* one Python int digit */
-             {-0x7fffL, 15, -1},
-             {0xffffL, 16, 1},
-             {-0xffffL, 16, -1},
-             {0xfffffffL, 28, 1},
-             {-0xfffffffL, 28, -1}};
-    size_t i;
-
-    for (i = 0; i < Py_ARRAY_LENGTH(testcases); ++i) {
-        size_t nbits;
-        int sign;
-        PyObject *plong;
-
-        plong = PyLong_FromLong(testcases[i].input);
-        if (plong == NULL)
+    const char *str;
+    Py_ssize_t len;
+    int base;
+    char *end = UNINITIALIZED_PTR;
+    if (!PyArg_ParseTuple(args, "z#i", &str, &len, &base)) {
+        return NULL;
+    }
+
+    PyObject *result = PyLong_FromString(str, &end, base);
+    if (result == NULL) {
+        // XXX 'end' is not always set.
+        return NULL;
+    }
+    return Py_BuildValue("Nn", result, (Py_ssize_t)(end - str));
+}
+
+static PyObject *
+pylong_fromunicodeobject(PyObject *module, PyObject *args)
+{
+    PyObject *unicode;
+    int base;
+    if (!PyArg_ParseTuple(args, "Oi", &unicode, &base)) {
+        return NULL;
+    }
+
+    NULLABLE(unicode);
+    return PyLong_FromUnicodeObject(unicode, base);
+}
+
+static PyObject *
+pylong_fromvoidptr(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyLong_FromVoidPtr((void *)arg);
+}
+
+/*[clinic input]
+_testcapi.PyLong_AsInt
+    arg: object
+    /
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_PyLong_AsInt(PyObject *module, PyObject *arg)
+/*[clinic end generated code: output=0df9f19de5fa575b input=9561b97105493a67]*/
+{
+    NULLABLE(arg);
+    assert(!PyErr_Occurred());
+    int value = PyLong_AsInt(arg);
+    if (value == -1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromLong(value);
+}
+
+static PyObject *
+pylong_aslong(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    long value = PyLong_AsLong(arg);
+    if (value == -1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromLong(value);
+}
+
+static PyObject *
+pylong_aslongandoverflow(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    int overflow = UNINITIALIZED_INT;
+    long value = PyLong_AsLongAndOverflow(arg, &overflow);
+    if (value == -1 && PyErr_Occurred()) {
+        assert(overflow == -1);
+        return NULL;
+    }
+    return Py_BuildValue("li", value, overflow);
+}
+
+static PyObject *
+pylong_asunsignedlong(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    unsigned long value = PyLong_AsUnsignedLong(arg);
+    if (value == (unsigned long)-1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromUnsignedLong(value);
+}
+
+static PyObject *
+pylong_asunsignedlongmask(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    unsigned long value = PyLong_AsUnsignedLongMask(arg);
+    if (value == (unsigned long)-1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromUnsignedLong(value);
+}
+
+static PyObject *
+pylong_aslonglong(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    long long value = PyLong_AsLongLong(arg);
+    if (value == -1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromLongLong(value);
+}
+
+static PyObject *
+pylong_aslonglongandoverflow(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    int overflow = UNINITIALIZED_INT;
+    long long value = PyLong_AsLongLongAndOverflow(arg, &overflow);
+    if (value == -1 && PyErr_Occurred()) {
+        assert(overflow == -1);
+        return NULL;
+    }
+    return Py_BuildValue("Li", value, overflow);
+}
+
+static PyObject *
+pylong_asunsignedlonglong(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    unsigned long long value = PyLong_AsUnsignedLongLong(arg);
+    if (value == (unsigned long long)-1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromUnsignedLongLong(value);
+}
+
+static PyObject *
+pylong_asunsignedlonglongmask(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    unsigned long long value = PyLong_AsUnsignedLongLongMask(arg);
+    if (value == (unsigned long long)-1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromUnsignedLongLong(value);
+}
+
+static PyObject *
+pylong_as_ssize_t(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    Py_ssize_t value = PyLong_AsSsize_t(arg);
+    if (value == -1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromSsize_t(value);
+}
+
+static PyObject *
+pylong_as_size_t(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    size_t value = PyLong_AsSize_t(arg);
+    if (value == (size_t)-1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyLong_FromSize_t(value);
+}
+
+static PyObject *
+pylong_asdouble(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    double value = PyLong_AsDouble(arg);
+    if (value == -1.0 && PyErr_Occurred()) {
+        return NULL;
+    }
+    return PyFloat_FromDouble(value);
+}
+
+static PyObject *
+pylong_asvoidptr(PyObject *module, PyObject *arg)
+{
+    NULLABLE(arg);
+    void *value = PyLong_AsVoidPtr(arg);
+    if (value == NULL) {
+        if (PyErr_Occurred()) {
             return NULL;
-        nbits = _PyLong_NumBits(plong);
-        sign = _PyLong_Sign(plong);
-
-        Py_DECREF(plong);
-        if (nbits != testcases[i].nbits)
-            return raiseTestError("test_long_numbits",
-                            "wrong result for _PyLong_NumBits");
-        if (sign != testcases[i].sign)
-            return raiseTestError("test_long_numbits",
-                            "wrong result for _PyLong_Sign");
+        }
+        Py_RETURN_NONE;
     }
-    Py_RETURN_NONE;
+    return Py_NewRef((PyObject *)value);
 }
 
 static PyMethodDef test_methods[] = {
-    {"test_long_and_overflow",  test_long_and_overflow,          METH_NOARGS},
-    {"test_long_api",           test_long_api,                   METH_NOARGS},
-    {"test_long_as_double",     test_long_as_double,             METH_NOARGS},
-    {"test_long_as_size_t",     test_long_as_size_t,             METH_NOARGS},
-    {"test_long_as_unsigned_long_long_mask", test_long_as_unsigned_long_long_mask, METH_NOARGS},
-    {"test_long_long_and_overflow",test_long_long_and_overflow,  METH_NOARGS},
-    {"test_long_numbits",       test_long_numbits,               METH_NOARGS},
-    {"test_longlong_api",       test_longlong_api,               METH_NOARGS},
+    _TESTCAPI_TEST_LONG_AND_OVERFLOW_METHODDEF
+    _TESTCAPI_TEST_LONG_API_METHODDEF
+    _TESTCAPI_TEST_LONG_AS_DOUBLE_METHODDEF
+    _TESTCAPI_TEST_LONG_AS_SIZE_T_METHODDEF
+    _TESTCAPI_TEST_LONG_AS_UNSIGNED_LONG_LONG_MASK_METHODDEF
+    _TESTCAPI_TEST_LONG_LONG_AND_OVERFLOW_METHODDEF
+    _TESTCAPI_TEST_LONGLONG_API_METHODDEF
+    _TESTCAPI_CALL_LONG_COMPACT_API_METHODDEF
+    {"pylong_check",                pylong_check,               METH_O},
+    {"pylong_checkexact",           pylong_checkexact,          METH_O},
+    {"pylong_fromdouble",           pylong_fromdouble,          METH_O},
+    {"pylong_fromstring",           pylong_fromstring,          METH_VARARGS},
+    {"pylong_fromunicodeobject",    pylong_fromunicodeobject,   METH_VARARGS},
+    {"pylong_fromvoidptr",          pylong_fromvoidptr,         METH_O},
+    _TESTCAPI_PYLONG_ASINT_METHODDEF
+    {"pylong_aslong",               pylong_aslong,              METH_O},
+    {"pylong_aslongandoverflow",    pylong_aslongandoverflow,   METH_O},
+    {"pylong_asunsignedlong",       pylong_asunsignedlong,      METH_O},
+    {"pylong_asunsignedlongmask",   pylong_asunsignedlongmask,  METH_O},
+    {"pylong_aslonglong",           pylong_aslonglong,          METH_O},
+    {"pylong_aslonglongandoverflow", pylong_aslonglongandoverflow, METH_O},
+    {"pylong_asunsignedlonglong",   pylong_asunsignedlonglong,  METH_O},
+    {"pylong_asunsignedlonglongmask", pylong_asunsignedlonglongmask, METH_O},
+    {"pylong_as_ssize_t",           pylong_as_ssize_t,          METH_O},
+    {"pylong_as_size_t",            pylong_as_size_t,           METH_O},
+    {"pylong_asdouble",             pylong_asdouble,            METH_O},
+    {"pylong_asvoidptr",            pylong_asvoidptr,           METH_O},
     {NULL},
 };
 
diff --git a/Modules/_testcapi/mem.c b/Modules/_testcapi/mem.c
index af32e9668dda2d..ab4ad934644c38 100644
--- a/Modules/_testcapi/mem.c
+++ b/Modules/_testcapi/mem.c
@@ -440,17 +440,6 @@ test_pymem_alloc0(PyObject *self, PyObject *Py_UNUSED(ignored))
     Py_RETURN_NONE;
 }
 
-static PyObject *
-test_pymem_getallocatorsname(PyObject *self, PyObject *args)
-{
-    const char *name = _PyMem_GetCurrentAllocatorName();
-    if (name == NULL) {
-        PyErr_SetString(PyExc_RuntimeError, "cannot get allocators name");
-        return NULL;
-    }
-    return PyUnicode_FromString(name);
-}
-
 static PyObject *
 test_pymem_setrawallocators(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
@@ -526,75 +515,6 @@ pymem_malloc_without_gil(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
-static PyObject *
-test_pyobject_is_freed(const char *test_name, PyObject *op)
-{
-    if (!_PyObject_IsFreed(op)) {
-        PyErr_SetString(PyExc_AssertionError,
-                        "object is not seen as freed");
-        return NULL;
-    }
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-check_pyobject_null_is_freed(PyObject *self, PyObject *Py_UNUSED(args))
-{
-    PyObject *op = NULL;
-    return test_pyobject_is_freed("check_pyobject_null_is_freed", op);
-}
-
-
-static PyObject *
-check_pyobject_uninitialized_is_freed(PyObject *self,
-                                      PyObject *Py_UNUSED(args))
-{
-    PyObject *op = (PyObject *)PyObject_Malloc(sizeof(PyObject));
-    if (op == NULL) {
-        return NULL;
-    }
-    /* Initialize reference count to avoid early crash in ceval or GC */
-    Py_SET_REFCNT(op, 1);
-    /* object fields like ob_type are uninitialized! */
-    return test_pyobject_is_freed("check_pyobject_uninitialized_is_freed", op);
-}
-
-
-static PyObject *
-check_pyobject_forbidden_bytes_is_freed(PyObject *self,
-                                        PyObject *Py_UNUSED(args))
-{
-    /* Allocate an incomplete PyObject structure: truncate 'ob_type' field */
-    PyObject *op = (PyObject *)PyObject_Malloc(offsetof(PyObject, ob_type));
-    if (op == NULL) {
-        return NULL;
-    }
-    /* Initialize reference count to avoid early crash in ceval or GC */
-    Py_SET_REFCNT(op, 1);
-    /* ob_type field is after the memory block: part of "forbidden bytes"
-       when using debug hooks on memory allocators! */
-    return test_pyobject_is_freed("check_pyobject_forbidden_bytes_is_freed", op);
-}
-
-
-static PyObject *
-check_pyobject_freed_is_freed(PyObject *self, PyObject *Py_UNUSED(args))
-{
-    /* This test would fail if run with the address sanitizer */
-#ifdef _Py_ADDRESS_SANITIZER
-    Py_RETURN_NONE;
-#else
-    PyObject *op = PyObject_CallNoArgs((PyObject *)&PyBaseObject_Type);
-    if (op == NULL) {
-        return NULL;
-    }
-    Py_TYPE(op)->tp_dealloc(op);
-    /* Reset reference count to avoid early crash in ceval or GC */
-    Py_SET_REFCNT(op, 1);
-    /* object memory is freed! */
-    return test_pyobject_is_freed("check_pyobject_freed_is_freed", op);
-#endif
-}
 
 // Tracemalloc tests
 static PyObject *
@@ -655,33 +575,9 @@ tracemalloc_untrack(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
-static PyObject *
-tracemalloc_get_traceback(PyObject *self, PyObject *args)
-{
-    unsigned int domain;
-    PyObject *ptr_obj;
-
-    if (!PyArg_ParseTuple(args, "IO", &domain, &ptr_obj)) {
-        return NULL;
-    }
-    void *ptr = PyLong_AsVoidPtr(ptr_obj);
-    if (PyErr_Occurred()) {
-        return NULL;
-    }
-
-    return _PyTraceMalloc_GetTraceback(domain, (uintptr_t)ptr);
-}
-
 static PyMethodDef test_methods[] = {
-    {"check_pyobject_forbidden_bytes_is_freed",
-                            check_pyobject_forbidden_bytes_is_freed, METH_NOARGS},
-    {"check_pyobject_freed_is_freed", check_pyobject_freed_is_freed, METH_NOARGS},
-    {"check_pyobject_null_is_freed",  check_pyobject_null_is_freed,  METH_NOARGS},
-    {"check_pyobject_uninitialized_is_freed",
-                              check_pyobject_uninitialized_is_freed, METH_NOARGS},
     {"pymem_api_misuse",              pymem_api_misuse,              METH_NOARGS},
     {"pymem_buffer_overflow",         pymem_buffer_overflow,         METH_NOARGS},
-    {"pymem_getallocatorsname",       test_pymem_getallocatorsname,  METH_NOARGS},
     {"pymem_malloc_without_gil",      pymem_malloc_without_gil,      METH_NOARGS},
     {"pyobject_malloc_without_gil",   pyobject_malloc_without_gil,   METH_NOARGS},
     {"remove_mem_hooks",              remove_mem_hooks,              METH_NOARGS,
@@ -697,7 +593,6 @@ static PyMethodDef test_methods[] = {
     // Tracemalloc tests
     {"tracemalloc_track",             tracemalloc_track,             METH_VARARGS},
     {"tracemalloc_untrack",           tracemalloc_untrack,           METH_VARARGS},
-    {"tracemalloc_get_traceback",     tracemalloc_get_traceback,     METH_VARARGS},
     {NULL},
 };
 
@@ -710,13 +605,20 @@ _PyTestCapi_Init_Mem(PyObject *mod)
 
     PyObject *v;
 #ifdef WITH_PYMALLOC
-    v = Py_NewRef(Py_True);
+    v = Py_True;
+#else
+    v = Py_False;
+#endif
+    if (PyModule_AddObjectRef(mod, "WITH_PYMALLOC", v) < 0) {
+        return -1;
+    }
+
+#ifdef WITH_MIMALLOC
+    v = Py_True;
 #else
-    v = Py_NewRef(Py_False);
+    v = Py_False;
 #endif
-    int rc = PyModule_AddObjectRef(mod, "WITH_PYMALLOC", v);
-    Py_DECREF(v);
-    if (rc < 0) {
+    if (PyModule_AddObjectRef(mod, "WITH_MIMALLOC", v) < 0) {
         return -1;
     }
 
diff --git a/Modules/_testcapi/numbers.c b/Modules/_testcapi/numbers.c
new file mode 100644
index 00000000000000..6f7fa3fa7a4186
--- /dev/null
+++ b/Modules/_testcapi/numbers.c
@@ -0,0 +1,16 @@
+#include "parts.h"
+#include "util.h"
+
+static PyMethodDef test_methods[] = {
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Numbers(PyObject *mod)
+{
+    if (PyModule_AddFunctions(mod, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/parts.h b/Modules/_testcapi/parts.h
index d1991ac6b464f2..29817edd69b134 100644
--- a/Modules/_testcapi/parts.h
+++ b/Modules/_testcapi/parts.h
@@ -1,52 +1,66 @@
 #ifndef Py_TESTCAPI_PARTS_H
 #define Py_TESTCAPI_PARTS_H
 
-#include "pyconfig.h"  // for Py_TRACE_REFS
-
-// Figure out if Limited API is available for this build. If it isn't we won't
-// build tests for it.
-// Currently, only Py_TRACE_REFS disables Limited API.
-#ifdef Py_TRACE_REFS
-#undef LIMITED_API_AVAILABLE
-#else
-#define LIMITED_API_AVAILABLE 1
-#endif
-
 // Always enable assertions
 #undef NDEBUG
 
-#if !defined(LIMITED_API_AVAILABLE) && defined(Py_LIMITED_API)
-// Limited API being unavailable means that with Py_LIMITED_API defined
-// we can't even include Python.h.
-// Do nothing; the .c file that defined Py_LIMITED_API should also do nothing.
-
+#ifdef PYTESTCAPI_NEED_INTERNAL_API
+#  ifndef Py_BUILD_CORE_BUILTIN
+#    define Py_BUILD_CORE_MODULE 1
+#  endif
 #else
+   // The _testcapi extension tests the public C API: header files in Include/
+   // and Include/cpython/ directories. The internal C API must not be tested
+   // by _testcapi: use _testinternalcapi for that.
+   //
+   // _testcapi C files can built with the Py_BUILD_CORE_BUILTIN macro defined
+   // if one of the Modules/Setup files asks to build _testcapi as "static"
+   // (gh-109723).
+   //
+   // The Visual Studio projects builds _testcapi with Py_BUILD_CORE_MODULE.
+#  undef Py_BUILD_CORE_MODULE
+#  undef Py_BUILD_CORE_BUILTIN
+#endif
 
 #include "Python.h"
 
+#if defined(Py_BUILD_CORE) && !defined(PYTESTCAPI_NEED_INTERNAL_API)
+#  error "_testcapi must test the public Python C API, not the internal C API"
+#endif
+
 int _PyTestCapi_Init_Vectorcall(PyObject *module);
 int _PyTestCapi_Init_Heaptype(PyObject *module);
+int _PyTestCapi_Init_Abstract(PyObject *module);
+int _PyTestCapi_Init_ByteArray(PyObject *module);
+int _PyTestCapi_Init_Bytes(PyObject *module);
 int _PyTestCapi_Init_Unicode(PyObject *module);
 int _PyTestCapi_Init_GetArgs(PyObject *module);
-int _PyTestCapi_Init_PyTime(PyObject *module);
 int _PyTestCapi_Init_DateTime(PyObject *module);
 int _PyTestCapi_Init_Docstring(PyObject *module);
 int _PyTestCapi_Init_Mem(PyObject *module);
 int _PyTestCapi_Init_Watchers(PyObject *module);
 int _PyTestCapi_Init_Long(PyObject *module);
 int _PyTestCapi_Init_Float(PyObject *module);
+int _PyTestCapi_Init_Complex(PyObject *module);
+int _PyTestCapi_Init_Numbers(PyObject *module);
+int _PyTestCapi_Init_Dict(PyObject *module);
+int _PyTestCapi_Init_Set(PyObject *module);
+int _PyTestCapi_Init_List(PyObject *module);
+int _PyTestCapi_Init_Tuple(PyObject *module);
 int _PyTestCapi_Init_Structmember(PyObject *module);
 int _PyTestCapi_Init_Exceptions(PyObject *module);
 int _PyTestCapi_Init_Code(PyObject *module);
 int _PyTestCapi_Init_Buffer(PyObject *module);
+int _PyTestCapi_Init_PyAtomic(PyObject *module);
 int _PyTestCapi_Init_PyOS(PyObject *module);
+int _PyTestCapi_Init_File(PyObject *module);
+int _PyTestCapi_Init_Codec(PyObject *module);
 int _PyTestCapi_Init_Immortal(PyObject *module);
-int _PyTestCapi_Init_GC(PyObject *mod);
+int _PyTestCapi_Init_GC(PyObject *module);
+int _PyTestCapi_Init_Sys(PyObject *module);
+int _PyTestCapi_Init_Hash(PyObject *module);
 
-#ifdef LIMITED_API_AVAILABLE
 int _PyTestCapi_Init_VectorcallLimited(PyObject *module);
 int _PyTestCapi_Init_HeaptypeRelative(PyObject *module);
-#endif // LIMITED_API_AVAILABLE
 
-#endif
 #endif // Py_TESTCAPI_PARTS_H
diff --git a/Modules/_testcapi/pyatomic.c b/Modules/_testcapi/pyatomic.c
new file mode 100644
index 00000000000000..4f72844535ebd6
--- /dev/null
+++ b/Modules/_testcapi/pyatomic.c
@@ -0,0 +1,191 @@
+/*
+ * C Extension module to smoke test pyatomic.h API.
+ *
+ * This only tests basic functionality, not any synchronizing ordering.
+ */
+
+#include "parts.h"
+
+// We define atomic bitwise operations on these types
+#define FOR_BITWISE_TYPES(V)    \
+    V(uint8, uint8_t)           \
+    V(uint16, uint16_t)         \
+    V(uint32, uint32_t)         \
+    V(uint64, uint64_t)         \
+    V(uintptr, uintptr_t)
+
+// We define atomic addition on these types
+#define FOR_ARITHMETIC_TYPES(V) \
+    FOR_BITWISE_TYPES(V)        \
+    V(int, int)                 \
+    V(uint, unsigned int)       \
+    V(int8, int8_t)             \
+    V(int16, int16_t)           \
+    V(int32, int32_t)           \
+    V(int64, int64_t)           \
+    V(intptr, intptr_t)         \
+    V(ssize, Py_ssize_t)
+
+// We define atomic load, store, exchange, and compare_exchange on these types
+#define FOR_ALL_TYPES(V)        \
+    FOR_ARITHMETIC_TYPES(V)     \
+    V(ptr, void*)
+
+#define IMPL_TEST_ADD(suffix, dtype) \
+static PyObject * \
+test_atomic_add_##suffix(PyObject *self, PyObject *obj) { \
+    dtype x = 0; \
+    assert(_Py_atomic_add_##suffix(&x, 1) == 0); \
+    assert(x == 1); \
+    assert(_Py_atomic_add_##suffix(&x, 2) == 1); \
+    assert(x == 3); \
+    assert(_Py_atomic_add_##suffix(&x, -2) == 3); \
+    assert(x == 1); \
+    assert(_Py_atomic_add_##suffix(&x, -1) == 1); \
+    assert(x == 0); \
+    assert(_Py_atomic_add_##suffix(&x, -1) == 0); \
+    assert(x == (dtype)-1); \
+    assert(_Py_atomic_add_##suffix(&x, -2) == (dtype)-1); \
+    assert(x == (dtype)-3); \
+    assert(_Py_atomic_add_##suffix(&x, 2) == (dtype)-3); \
+    assert(x == (dtype)-1); \
+    Py_RETURN_NONE; \
+}
+FOR_ARITHMETIC_TYPES(IMPL_TEST_ADD)
+
+#define IMPL_TEST_COMPARE_EXCHANGE(suffix, dtype) \
+static PyObject * \
+test_atomic_compare_exchange_##suffix(PyObject *self, PyObject *obj) { \
+    dtype x = (dtype)0; \
+    dtype y = (dtype)1; \
+    dtype z = (dtype)2; \
+    assert(_Py_atomic_compare_exchange_##suffix(&x, &y, z) == 0); \
+    assert(x == 0); \
+    assert(y == 0); \
+    assert(_Py_atomic_compare_exchange_##suffix(&x, &y, z) == 1); \
+    assert(x == z); \
+    assert(y == 0); \
+    assert(_Py_atomic_compare_exchange_##suffix(&x, &y, z) == 0); \
+    assert(x == z); \
+    assert(y == z); \
+    Py_RETURN_NONE; \
+}
+FOR_ALL_TYPES(IMPL_TEST_COMPARE_EXCHANGE)
+
+#define IMPL_TEST_EXCHANGE(suffix, dtype) \
+static PyObject * \
+test_atomic_exchange_##suffix(PyObject *self, PyObject *obj) { \
+    dtype x = (dtype)0; \
+    dtype y = (dtype)1; \
+    dtype z = (dtype)2; \
+    assert(_Py_atomic_exchange_##suffix(&x, y) == (dtype)0); \
+    assert(x == (dtype)1); \
+    assert(_Py_atomic_exchange_##suffix(&x, z) == (dtype)1); \
+    assert(x == (dtype)2); \
+    assert(_Py_atomic_exchange_##suffix(&x, y) == (dtype)2); \
+    assert(x == (dtype)1); \
+    Py_RETURN_NONE; \
+}
+FOR_ALL_TYPES(IMPL_TEST_EXCHANGE)
+
+#define IMPL_TEST_LOAD_STORE(suffix, dtype) \
+static PyObject * \
+test_atomic_load_store_##suffix(PyObject *self, PyObject *obj) { \
+    dtype x = (dtype)0; \
+    dtype y = (dtype)1; \
+    dtype z = (dtype)2; \
+    assert(_Py_atomic_load_##suffix(&x) == (dtype)0); \
+    assert(x == (dtype)0); \
+    _Py_atomic_store_##suffix(&x, y); \
+    assert(_Py_atomic_load_##suffix(&x) == (dtype)1); \
+    assert(x == (dtype)1); \
+    _Py_atomic_store_##suffix##_relaxed(&x, z); \
+    assert(_Py_atomic_load_##suffix##_relaxed(&x) == (dtype)2); \
+    assert(x == (dtype)2); \
+    Py_RETURN_NONE; \
+}
+FOR_ALL_TYPES(IMPL_TEST_LOAD_STORE)
+
+#define IMPL_TEST_AND_OR(suffix, dtype) \
+static PyObject * \
+test_atomic_and_or_##suffix(PyObject *self, PyObject *obj) { \
+    dtype x = (dtype)0; \
+    dtype y = (dtype)1; \
+    dtype z = (dtype)3; \
+    assert(_Py_atomic_or_##suffix(&x, z) == (dtype)0); \
+    assert(x == (dtype)3); \
+    assert(_Py_atomic_and_##suffix(&x, y) == (dtype)3); \
+    assert(x == (dtype)1); \
+    Py_RETURN_NONE; \
+}
+FOR_BITWISE_TYPES(IMPL_TEST_AND_OR)
+
+static PyObject *
+test_atomic_fences(PyObject *self, PyObject *obj) {
+    // Just make sure that the fences compile. We are not
+    // testing any synchronizing ordering.
+    _Py_atomic_fence_seq_cst();
+    _Py_atomic_fence_release();
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+test_atomic_release_acquire(PyObject *self, PyObject *obj) {
+    void *x = NULL;
+    void *y = &y;
+    assert(_Py_atomic_load_ptr_acquire(&x) == NULL);
+    _Py_atomic_store_ptr_release(&x, y);
+    assert(x == y);
+    assert(_Py_atomic_load_ptr_acquire(&x) == y);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+test_atomic_load_store_int_release_acquire(PyObject *self, PyObject *obj) { \
+    int x = 0;
+    int y = 1;
+    int z = 2;
+    assert(_Py_atomic_load_int_acquire(&x) == 0);
+    _Py_atomic_store_int_release(&x, y);
+    assert(x == y);
+    assert(_Py_atomic_load_int_acquire(&x) == y);
+    _Py_atomic_store_int_release(&x, z);
+    assert(x == z);
+    assert(_Py_atomic_load_int_acquire(&x) == z);
+    Py_RETURN_NONE;
+}
+
+// NOTE: all tests should start with "test_atomic_" to be included
+// in test_pyatomic.py
+
+#define BIND_TEST_ADD(suffix, dtype) \
+    {"test_atomic_add_" #suffix, test_atomic_add_##suffix, METH_NOARGS},
+#define BIND_TEST_COMPARE_EXCHANGE(suffix, dtype) \
+    {"test_atomic_compare_exchange_" #suffix, test_atomic_compare_exchange_##suffix, METH_NOARGS},
+#define BIND_TEST_EXCHANGE(suffix, dtype) \
+    {"test_atomic_exchange_" #suffix, test_atomic_exchange_##suffix, METH_NOARGS},
+#define BIND_TEST_LOAD_STORE(suffix, dtype) \
+    {"test_atomic_load_store_" #suffix, test_atomic_load_store_##suffix, METH_NOARGS},
+#define BIND_TEST_AND_OR(suffix, dtype) \
+    {"test_atomic_and_or_" #suffix, test_atomic_and_or_##suffix, METH_NOARGS},
+
+static PyMethodDef test_methods[] = {
+    FOR_ARITHMETIC_TYPES(BIND_TEST_ADD)
+    FOR_ALL_TYPES(BIND_TEST_COMPARE_EXCHANGE)
+    FOR_ALL_TYPES(BIND_TEST_EXCHANGE)
+    FOR_ALL_TYPES(BIND_TEST_LOAD_STORE)
+    FOR_BITWISE_TYPES(BIND_TEST_AND_OR)
+    {"test_atomic_fences", test_atomic_fences, METH_NOARGS},
+    {"test_atomic_release_acquire", test_atomic_release_acquire, METH_NOARGS},
+    {"test_atomic_load_store_int_release_acquire", test_atomic_load_store_int_release_acquire, METH_NOARGS},
+    {NULL, NULL} /* sentinel */
+};
+
+int
+_PyTestCapi_Init_PyAtomic(PyObject *mod)
+{
+    if (PyModule_AddFunctions(mod, test_methods) < 0) {
+        return -1;
+    }
+    return 0;
+}
diff --git a/Modules/_testcapi/set.c b/Modules/_testcapi/set.c
new file mode 100644
index 00000000000000..2fbd0aeffcd9f9
--- /dev/null
+++ b/Modules/_testcapi/set.c
@@ -0,0 +1,197 @@
+#include "parts.h"
+#include "util.h"
+
+static PyObject *
+set_check(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PySet_Check(obj));
+}
+
+static PyObject *
+set_checkexact(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PySet_CheckExact(obj));
+}
+
+static PyObject *
+frozenset_check(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyFrozenSet_Check(obj));
+}
+
+static PyObject *
+frozenset_checkexact(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyFrozenSet_CheckExact(obj));
+}
+
+static PyObject *
+anyset_check(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyAnySet_Check(obj));
+}
+
+static PyObject *
+anyset_checkexact(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PyAnySet_CheckExact(obj));
+}
+
+static PyObject *
+set_new(PyObject *self, PyObject *args)
+{
+    PyObject *iterable = NULL;
+    if (!PyArg_ParseTuple(args, "|O", &iterable)) {
+        return NULL;
+    }
+    return PySet_New(iterable);
+}
+
+static PyObject *
+frozenset_new(PyObject *self, PyObject *args)
+{
+    PyObject *iterable = NULL;
+    if (!PyArg_ParseTuple(args, "|O", &iterable)) {
+        return NULL;
+    }
+    return PyFrozenSet_New(iterable);
+}
+
+static PyObject *
+set_size(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PySet_Size(obj));
+}
+
+static PyObject *
+set_get_size(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PySet_GET_SIZE(obj));
+}
+
+static PyObject *
+set_contains(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *item;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &item)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(item);
+    RETURN_INT(PySet_Contains(obj, item));
+}
+
+static PyObject *
+set_add(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *item;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &item)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(item);
+    RETURN_INT(PySet_Add(obj, item));
+}
+
+static PyObject *
+set_discard(PyObject *self, PyObject *args)
+{
+    PyObject *obj, *item;
+    if (!PyArg_ParseTuple(args, "OO", &obj, &item)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    NULLABLE(item);
+    RETURN_INT(PySet_Discard(obj, item));
+}
+
+static PyObject *
+set_pop(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    return PySet_Pop(obj);
+}
+
+static PyObject *
+set_clear(PyObject *self, PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_INT(PySet_Clear(obj));
+}
+
+static PyObject *
+test_frozenset_add_in_capi(PyObject *self, PyObject *Py_UNUSED(obj))
+{
+    // Test that `frozenset` can be used with `PySet_Add`,
+    // when frozenset is just created in CAPI.
+    PyObject *fs = PyFrozenSet_New(NULL);
+    if (fs == NULL) {
+        return NULL;
+    }
+    PyObject *num = PyLong_FromLong(1);
+    if (num == NULL) {
+        goto error;
+    }
+    if (PySet_Add(fs, num) < 0) {
+        goto error;
+    }
+    int contains = PySet_Contains(fs, num);
+    if (contains < 0) {
+        goto error;
+    }
+    else if (contains == 0) {
+        goto unexpected;
+    }
+    Py_DECREF(fs);
+    Py_DECREF(num);
+    Py_RETURN_NONE;
+
+unexpected:
+    PyErr_SetString(PyExc_ValueError, "set does not contain expected value");
+error:
+    Py_DECREF(fs);
+    Py_XDECREF(num);
+    return NULL;
+}
+
+static PyMethodDef test_methods[] = {
+    {"set_check", set_check, METH_O},
+    {"set_checkexact", set_checkexact, METH_O},
+    {"frozenset_check", frozenset_check, METH_O},
+    {"frozenset_checkexact", frozenset_checkexact, METH_O},
+    {"anyset_check", anyset_check, METH_O},
+    {"anyset_checkexact", anyset_checkexact, METH_O},
+
+    {"set_new", set_new, METH_VARARGS},
+    {"frozenset_new", frozenset_new, METH_VARARGS},
+
+    {"set_size", set_size, METH_O},
+    {"set_get_size", set_get_size, METH_O},
+    {"set_contains", set_contains, METH_VARARGS},
+    {"set_add", set_add, METH_VARARGS},
+    {"set_discard", set_discard, METH_VARARGS},
+    {"set_pop", set_pop, METH_O},
+    {"set_clear", set_clear, METH_O},
+
+    {"test_frozenset_add_in_capi", test_frozenset_add_in_capi, METH_NOARGS},
+
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Set(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/structmember.c b/Modules/_testcapi/structmember.c
index 0fb872a4328d60..096eaecd40855f 100644
--- a/Modules/_testcapi/structmember.c
+++ b/Modules/_testcapi/structmember.c
@@ -1,4 +1,3 @@
-#define PY_SSIZE_T_CLEAN
 #include "parts.h"
 #include <stddef.h>   // for offsetof()
 
@@ -194,7 +193,7 @@ _PyTestCapi_Init_Structmember(PyObject *m)
     if (res < 0) {
         return -1;
     }
-    res = PyModule_AddObject(
+    res = PyModule_AddObjectRef(
         m,
         "_test_structmembersType_OldAPI",
         (PyObject *)&test_structmembersType_OldAPI);
diff --git a/Modules/_testcapi/sys.c b/Modules/_testcapi/sys.c
new file mode 100644
index 00000000000000..aa40e3cd5b9b29
--- /dev/null
+++ b/Modules/_testcapi/sys.c
@@ -0,0 +1,56 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyObject *
+sys_getobject(PyObject *Py_UNUSED(module), PyObject *arg)
+{
+    const char *name;
+    Py_ssize_t size;
+    if (!PyArg_Parse(arg, "z#", &name, &size)) {
+        return NULL;
+    }
+    PyObject *result = PySys_GetObject(name);
+    if (result == NULL) {
+        result = PyExc_AttributeError;
+    }
+    return Py_NewRef(result);
+}
+
+static PyObject *
+sys_setobject(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    PyObject *value;
+    if (!PyArg_ParseTuple(args, "z#O", &name, &size, &value)) {
+        return NULL;
+    }
+    NULLABLE(value);
+    RETURN_INT(PySys_SetObject(name, value));
+}
+
+static PyObject *
+sys_getxoptions(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(ignored))
+{
+    PyObject *result = PySys_GetXOptions();
+    return Py_XNewRef(result);
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"sys_getobject", sys_getobject, METH_O},
+    {"sys_setobject", sys_setobject, METH_VARARGS},
+    {"sys_getxoptions", sys_getxoptions, METH_NOARGS},
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Sys(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/tuple.c b/Modules/_testcapi/tuple.c
new file mode 100644
index 00000000000000..95dde8c0edadbe
--- /dev/null
+++ b/Modules/_testcapi/tuple.c
@@ -0,0 +1,17 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyMethodDef test_methods[] = {
+    {NULL},
+};
+
+int
+_PyTestCapi_Init_Tuple(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0){
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testcapi/unicode.c b/Modules/_testcapi/unicode.c
index 7dd3b9c0c03e50..a10183dddeca98 100644
--- a/Modules/_testcapi/unicode.c
+++ b/Modules/_testcapi/unicode.c
@@ -1,5 +1,7 @@
-#define PY_SSIZE_T_CLEAN
+#include <stddef.h>               // ptrdiff_t
+
 #include "parts.h"
+#include "util.h"
 
 static struct PyModuleDef *_testcapimodule = NULL;  // set at initialization
 
@@ -100,7 +102,6 @@ test_widechar(PyObject *self, PyObject *Py_UNUSED(ignored))
     Py_RETURN_NONE;
 }
 
-#define NULLABLE(x) do { if (x == Py_None) x = NULL; } while (0);
 
 static PyObject *
 unicode_copy(PyObject *unicode)
@@ -346,13 +347,8 @@ unicode_substring(PyObject *self, PyObject *args)
 static PyObject *
 unicode_getlength(PyObject *self, PyObject *arg)
 {
-    Py_ssize_t result;
-
     NULLABLE(arg);
-    result = PyUnicode_GetLength(arg);
-    if (result == -1)
-        return NULL;
-    return PyLong_FromSsize_t(result);
+    RETURN_SIZE(PyUnicode_GetLength(arg));
 }
 
 /* Test PyUnicode_ReadChar() */
@@ -374,6 +370,22 @@ unicode_readchar(PyObject *self, PyObject *args)
     return PyLong_FromUnsignedLong(result);
 }
 
+/* Test PyUnicode_FromEncodedObject() */
+static PyObject *
+unicode_fromencodedobject(PyObject *self, PyObject *args)
+{
+    PyObject *obj;
+    const char *encoding;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "Oz|z", &obj, &encoding, &errors)) {
+        return NULL;
+    }
+
+    NULLABLE(obj);
+    return PyUnicode_FromEncodedObject(obj, encoding, errors);
+}
+
 /* Test PyUnicode_FromObject() */
 static PyObject *
 unicode_fromobject(PyObject *self, PyObject *arg)
@@ -465,16 +477,12 @@ static PyObject *
 unicode_aswidechar_null(PyObject *self, PyObject *args)
 {
     PyObject *unicode;
-    Py_ssize_t buflen, size;
+    Py_ssize_t buflen;
 
     if (!PyArg_ParseTuple(args, "On", &unicode, &buflen))
         return NULL;
     NULLABLE(unicode);
-    size = PyUnicode_AsWideChar(unicode, NULL, buflen);
-    if (size == -1) {
-        return NULL;
-    }
-    return PyLong_FromSsize_t(size);
+    RETURN_SIZE(PyUnicode_AsWideChar(unicode, NULL, buflen));
 }
 
 /* Test PyUnicode_AsWideCharString() */
@@ -482,7 +490,7 @@ static PyObject *
 unicode_aswidecharstring(PyObject *self, PyObject *args)
 {
     PyObject *unicode, *result;
-    Py_ssize_t size = 100;
+    Py_ssize_t size = UNINITIALIZED_SIZE;
     wchar_t *buffer;
 
     if (!PyArg_ParseTuple(args, "O", &unicode))
@@ -490,8 +498,10 @@ unicode_aswidecharstring(PyObject *self, PyObject *args)
 
     NULLABLE(unicode);
     buffer = PyUnicode_AsWideCharString(unicode, &size);
-    if (buffer == NULL)
+    if (buffer == NULL) {
+        assert(size == UNINITIALIZED_SIZE);
         return NULL;
+    }
 
     result = PyUnicode_FromWideChar(buffer, size + 1);
     PyMem_Free(buffer);
@@ -616,15 +626,17 @@ unicode_asutf8andsize(PyObject *self, PyObject *args)
     PyObject *unicode;
     Py_ssize_t buflen;
     const char *s;
-    Py_ssize_t size = -100;
+    Py_ssize_t size = UNINITIALIZED_SIZE;
 
     if (!PyArg_ParseTuple(args, "On", &unicode, &buflen))
         return NULL;
 
     NULLABLE(unicode);
     s = PyUnicode_AsUTF8AndSize(unicode, &size);
-    if (s == NULL)
+    if (s == NULL) {
+        assert(size == -1);
         return NULL;
+    }
 
     return Py_BuildValue("(y#n)", s, buflen, size);
 }
@@ -659,12 +671,77 @@ unicode_getdefaultencoding(PyObject *self, PyObject *Py_UNUSED(ignored))
     return PyBytes_FromString(s);
 }
 
-/* Test _PyUnicode_TransformDecimalAndSpaceToASCII() */
+/* Test PyUnicode_Decode() */
+static PyObject *
+unicode_decode(PyObject *self, PyObject *args)
+{
+    const char *s;
+    Py_ssize_t size;
+    const char *encoding;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#z|z", &s, &size, &encoding, &errors))
+        return NULL;
+
+    return PyUnicode_Decode(s, size, encoding, errors);
+}
+
+/* Test PyUnicode_AsEncodedString() */
 static PyObject *
-unicode_transformdecimalandspacetoascii(PyObject *self, PyObject *arg)
+unicode_asencodedstring(PyObject *self, PyObject *args)
+{
+    PyObject *unicode;
+    const char *encoding;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "Oz|z", &unicode, &encoding, &errors))
+        return NULL;
+
+    NULLABLE(unicode);
+    return PyUnicode_AsEncodedString(unicode, encoding, errors);
+}
+
+/* Test PyUnicode_BuildEncodingMap() */
+static PyObject *
+unicode_buildencodingmap(PyObject *self, PyObject *arg)
 {
     NULLABLE(arg);
-    return _PyUnicode_TransformDecimalAndSpaceToASCII(arg);
+    return PyUnicode_BuildEncodingMap(arg);
+}
+
+/* Test PyUnicode_DecodeUTF7() */
+static PyObject *
+unicode_decodeutf7(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeUTF7(data, size, errors);
+}
+
+/* Test PyUnicode_DecodeUTF7Stateful() */
+static PyObject *
+unicode_decodeutf7stateful(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    Py_ssize_t consumed = UNINITIALIZED_SIZE;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeUTF7Stateful(data, size, errors, &consumed);
+    if (!result) {
+        assert(consumed == UNINITIALIZED_SIZE);
+        return NULL;
+    }
+    return Py_BuildValue("(Nn)", result, consumed);
 }
 
 /* Test PyUnicode_DecodeUTF8() */
@@ -688,7 +765,7 @@ unicode_decodeutf8stateful(PyObject *self, PyObject *args)
     const char *data;
     Py_ssize_t size;
     const char *errors = NULL;
-    Py_ssize_t consumed = 123456789;
+    Py_ssize_t consumed = UNINITIALIZED_SIZE;
     PyObject *result;
 
     if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
@@ -696,11 +773,397 @@ unicode_decodeutf8stateful(PyObject *self, PyObject *args)
 
     result = PyUnicode_DecodeUTF8Stateful(data, size, errors, &consumed);
     if (!result) {
+        assert(consumed == UNINITIALIZED_SIZE);
+        return NULL;
+    }
+    return Py_BuildValue("(Nn)", result, consumed);
+}
+
+/* Test PyUnicode_AsUTF8String() */
+static PyObject *
+unicode_asutf8string(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsUTF8String(arg);
+}
+
+/* Test PyUnicode_DecodeUTF32() */
+static PyObject *
+unicode_decodeutf32(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    int byteorder = UNINITIALIZED_INT;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "iy#|z", &byteorder, &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeUTF32(data, size, errors, &byteorder);
+    if (!result) {
+        return NULL;
+    }
+    return Py_BuildValue("(iN)", byteorder, result);
+}
+
+/* Test PyUnicode_DecodeUTF32Stateful() */
+static PyObject *
+unicode_decodeutf32stateful(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    int byteorder = UNINITIALIZED_INT;
+    Py_ssize_t consumed = UNINITIALIZED_SIZE;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "iy#|z", &byteorder, &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeUTF32Stateful(data, size, errors, &byteorder, &consumed);
+    if (!result) {
+        assert(consumed == UNINITIALIZED_SIZE);
+        return NULL;
+    }
+    return Py_BuildValue("(iNn)", byteorder, result, consumed);
+}
+
+/* Test PyUnicode_AsUTF32String() */
+static PyObject *
+unicode_asutf32string(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsUTF32String(arg);
+}
+
+/* Test PyUnicode_DecodeUTF16() */
+static PyObject *
+unicode_decodeutf16(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    int byteorder = UNINITIALIZED_INT;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "iy#|z", &byteorder, &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeUTF16(data, size, errors, &byteorder);
+    if (!result) {
+        return NULL;
+    }
+    return Py_BuildValue("(iN)", byteorder, result);
+}
+
+/* Test PyUnicode_DecodeUTF16Stateful() */
+static PyObject *
+unicode_decodeutf16stateful(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    int byteorder = UNINITIALIZED_INT;
+    Py_ssize_t consumed = UNINITIALIZED_SIZE;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "iy#|z", &byteorder, &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeUTF16Stateful(data, size, errors, &byteorder, &consumed);
+    if (!result) {
+        assert(consumed == UNINITIALIZED_SIZE);
+        return NULL;
+    }
+    return Py_BuildValue("(iNn)", byteorder, result, consumed);
+}
+
+/* Test PyUnicode_AsUTF16String() */
+static PyObject *
+unicode_asutf16string(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsUTF16String(arg);
+}
+
+/* Test PyUnicode_DecodeUnicodeEscape() */
+static PyObject *
+unicode_decodeunicodeescape(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeUnicodeEscape(data, size, errors);
+}
+
+/* Test PyUnicode_AsUnicodeEscapeString() */
+static PyObject *
+unicode_asunicodeescapestring(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsUnicodeEscapeString(arg);
+}
+
+static PyObject *
+unicode_decoderawunicodeescape(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeRawUnicodeEscape(data, size, errors);
+}
+
+/* Test PyUnicode_AsRawUnicodeEscapeString() */
+static PyObject *
+unicode_asrawunicodeescapestring(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsRawUnicodeEscapeString(arg);
+}
+
+static PyObject *
+unicode_decodelatin1(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeLatin1(data, size, errors);
+}
+
+/* Test PyUnicode_AsLatin1String() */
+static PyObject *
+unicode_aslatin1string(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsLatin1String(arg);
+}
+
+/* Test PyUnicode_DecodeASCII() */
+static PyObject *
+unicode_decodeascii(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeASCII(data, size, errors);
+}
+
+/* Test PyUnicode_AsASCIIString() */
+static PyObject *
+unicode_asasciistring(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsASCIIString(arg);
+}
+
+/* Test PyUnicode_DecodeCharmap() */
+static PyObject *
+unicode_decodecharmap(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    PyObject *mapping;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#O|z", &data, &size, &mapping, &errors))
+        return NULL;
+
+    NULLABLE(mapping);
+    return PyUnicode_DecodeCharmap(data, size, mapping, errors);
+}
+
+/* Test PyUnicode_AsCharmapString() */
+static PyObject *
+unicode_ascharmapstring(PyObject *self, PyObject *args)
+{
+    PyObject *unicode;
+    PyObject *mapping;
+
+    if (!PyArg_ParseTuple(args, "OO", &unicode, &mapping))
+        return NULL;
+
+    NULLABLE(unicode);
+    NULLABLE(mapping);
+    return PyUnicode_AsCharmapString(unicode, mapping);
+}
+
+#ifdef MS_WINDOWS
+
+/* Test PyUnicode_DecodeMBCS() */
+static PyObject *
+unicode_decodembcs(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeMBCS(data, size, errors);
+}
+
+/* Test PyUnicode_DecodeMBCSStateful() */
+static PyObject *
+unicode_decodembcsstateful(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    Py_ssize_t consumed = UNINITIALIZED_SIZE;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeMBCSStateful(data, size, errors, &consumed);
+    if (!result) {
+        assert(consumed == UNINITIALIZED_SIZE);
         return NULL;
     }
     return Py_BuildValue("(Nn)", result, consumed);
 }
 
+/* Test PyUnicode_DecodeCodePageStateful() */
+static PyObject *
+unicode_decodecodepagestateful(PyObject *self, PyObject *args)
+{
+    int code_page;
+    const char *data;
+    Py_ssize_t size;
+    const char *errors = NULL;
+    Py_ssize_t consumed = UNINITIALIZED_SIZE;
+    PyObject *result;
+
+    if (!PyArg_ParseTuple(args, "iy#|z", &code_page, &data, &size, &errors))
+        return NULL;
+
+    result = PyUnicode_DecodeCodePageStateful(code_page, data, size, errors, &consumed);
+    if (!result) {
+        assert(consumed == UNINITIALIZED_SIZE);
+        return NULL;
+    }
+    return Py_BuildValue("(Nn)", result, consumed);
+}
+
+/* Test PyUnicode_AsMBCSString() */
+static PyObject *
+unicode_asmbcsstring(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_AsMBCSString(arg);
+}
+
+/* Test PyUnicode_EncodeCodePage() */
+static PyObject *
+unicode_encodecodepage(PyObject *self, PyObject *args)
+{
+    int code_page;
+    PyObject *unicode;
+    const char *errors;
+
+    if (!PyArg_ParseTuple(args, "iO|z", &code_page, &unicode, &errors))
+        return NULL;
+
+    NULLABLE(unicode);
+    return PyUnicode_EncodeCodePage(code_page, unicode, errors);
+}
+
+#endif /* MS_WINDOWS */
+
+/* Test PyUnicode_DecodeLocaleAndSize() */
+static PyObject *
+unicode_decodelocaleandsize(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeLocaleAndSize(data, size, errors);
+}
+
+/* Test PyUnicode_DecodeLocale() */
+static PyObject *
+unicode_decodelocale(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+    const char *errors;
+
+    if (!PyArg_ParseTuple(args, "y#|z", &data, &size, &errors))
+        return NULL;
+
+    return PyUnicode_DecodeLocale(data, errors);
+}
+
+/* Test PyUnicode_EncodeLocale() */
+static PyObject *
+unicode_encodelocale(PyObject *self, PyObject *args)
+{
+    PyObject *unicode;
+    const char *errors;
+
+    if (!PyArg_ParseTuple(args, "O|z", &unicode, &errors))
+        return NULL;
+
+    NULLABLE(unicode);
+    return PyUnicode_EncodeLocale(unicode, errors);
+}
+
+/* Test PyUnicode_DecodeFSDefault() */
+static PyObject *
+unicode_decodefsdefault(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+
+    if (!PyArg_ParseTuple(args, "y#", &data, &size))
+        return NULL;
+
+    return PyUnicode_DecodeFSDefault(data);
+}
+
+/* Test PyUnicode_DecodeFSDefaultAndSize() */
+static PyObject *
+unicode_decodefsdefaultandsize(PyObject *self, PyObject *args)
+{
+    const char *data;
+    Py_ssize_t size;
+
+    if (!PyArg_ParseTuple(args, "y#|n", &data, &size, &size))
+        return NULL;
+
+    return PyUnicode_DecodeFSDefaultAndSize(data, size);
+}
+
+/* Test PyUnicode_EncodeFSDefault() */
+static PyObject *
+unicode_encodefsdefault(PyObject *self, PyObject *arg)
+{
+    NULLABLE(arg);
+    return PyUnicode_EncodeFSDefault(arg);
+}
+
 /* Test PyUnicode_Concat() */
 static PyObject *
 unicode_concat(PyObject *self, PyObject *args)
@@ -831,17 +1294,13 @@ unicode_count(PyObject *self, PyObject *args)
     PyObject *substr;
     Py_ssize_t start;
     Py_ssize_t end;
-    Py_ssize_t result;
 
     if (!PyArg_ParseTuple(args, "OOnn", &str, &substr, &start, &end))
         return NULL;
 
     NULLABLE(str);
     NULLABLE(substr);
-    result = PyUnicode_Count(str, substr, start, end);
-    if (result == -1)
-        return NULL;
-    return PyLong_FromSsize_t(result);
+    RETURN_SIZE(PyUnicode_Count(str, substr, start, end));
 }
 
 /* Test PyUnicode_Find() */
@@ -861,8 +1320,11 @@ unicode_find(PyObject *self, PyObject *args)
     NULLABLE(str);
     NULLABLE(substr);
     result = PyUnicode_Find(str, substr, start, end, direction);
-    if (result == -2)
+    if (result == -2) {
+        assert(PyErr_Occurred());
         return NULL;
+    }
+    assert(!PyErr_Occurred());
     return PyLong_FromSsize_t(result);
 }
 
@@ -875,17 +1337,13 @@ unicode_tailmatch(PyObject *self, PyObject *args)
     Py_ssize_t start;
     Py_ssize_t end;
     int direction;
-    Py_ssize_t result;
 
     if (!PyArg_ParseTuple(args, "OOnni", &str, &substr, &start, &end, &direction))
         return NULL;
 
     NULLABLE(str);
     NULLABLE(substr);
-    result = PyUnicode_Tailmatch(str, substr, start, end, direction);
-    if (result == -1)
-        return NULL;
-    return PyLong_FromSsize_t(result);
+    RETURN_SIZE(PyUnicode_Tailmatch(str, substr, start, end, direction));
 }
 
 /* Test PyUnicode_FindChar() */
@@ -904,10 +1362,12 @@ unicode_findchar(PyObject *self, PyObject *args)
     }
     NULLABLE(str);
     result = PyUnicode_FindChar(str, (Py_UCS4)ch, start, end, direction);
-    if (result == -2)
+    if (result == -2) {
+        assert(PyErr_Occurred());
         return NULL;
-    else
-        return PyLong_FromSsize_t(result);
+    }
+    assert(!PyErr_Occurred());
+    return PyLong_FromSsize_t(result);
 }
 
 /* Test PyUnicode_Replace() */
@@ -945,6 +1405,7 @@ unicode_compare(PyObject *self, PyObject *args)
     if (result == -1 && PyErr_Occurred()) {
         return NULL;
     }
+    assert(!PyErr_Occurred());
     return PyLong_FromLong(result);
 }
 
@@ -968,6 +1429,48 @@ unicode_comparewithasciistring(PyObject *self, PyObject *args)
     return PyLong_FromLong(result);
 }
 
+/* Test PyUnicode_EqualToUTF8() */
+static PyObject *
+unicode_equaltoutf8(PyObject *self, PyObject *args)
+{
+    PyObject *left;
+    const char *right = NULL;
+    Py_ssize_t right_len;
+    int result;
+
+    if (!PyArg_ParseTuple(args, "Oz#", &left, &right, &right_len)) {
+        return NULL;
+    }
+
+    NULLABLE(left);
+    result = PyUnicode_EqualToUTF8(left, right);
+    assert(!PyErr_Occurred());
+    return PyLong_FromLong(result);
+}
+
+/* Test PyUnicode_EqualToUTF8AndSize() */
+static PyObject *
+unicode_equaltoutf8andsize(PyObject *self, PyObject *args)
+{
+    PyObject *left;
+    const char *right = NULL;
+    Py_ssize_t right_len;
+    Py_ssize_t size = -100;
+    int result;
+
+    if (!PyArg_ParseTuple(args, "Oz#|n", &left, &right, &right_len, &size)) {
+        return NULL;
+    }
+
+    NULLABLE(left);
+    if (size == -100) {
+        size = right_len;
+    }
+    result = PyUnicode_EqualToUTF8AndSize(left, right, size);
+    assert(!PyErr_Occurred());
+    return PyLong_FromLong(result);
+}
+
 /* Test PyUnicode_RichCompare() */
 static PyObject *
 unicode_richcompare(PyObject *self, PyObject *args)
@@ -1005,32 +1508,21 @@ unicode_contains(PyObject *self, PyObject *args)
 {
     PyObject *container;
     PyObject *element;
-    int result;
 
     if (!PyArg_ParseTuple(args, "OO", &container, &element))
         return NULL;
 
     NULLABLE(container);
     NULLABLE(element);
-    result = PyUnicode_Contains(container, element);
-    if (result == -1 && PyErr_Occurred()) {
-        return NULL;
-    }
-    return PyLong_FromLong(result);
+    RETURN_INT(PyUnicode_Contains(container, element));
 }
 
 /* Test PyUnicode_IsIdentifier() */
 static PyObject *
 unicode_isidentifier(PyObject *self, PyObject *arg)
 {
-    int result;
-
     NULLABLE(arg);
-    result = PyUnicode_IsIdentifier(arg);
-    if (result == -1 && PyErr_Occurred()) {
-        return NULL;
-    }
-    return PyLong_FromLong(result);
+    RETURN_INT(PyUnicode_IsIdentifier(arg));
 }
 
 /* Test PyUnicode_CopyCharacters() */
@@ -1099,7 +1591,7 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     }                                                               \
     else if (result == NULL)                                        \
         return NULL;                                                \
-    else if (!_PyUnicode_EqualToASCIIString(result, EXPECTED)) {    \
+    else if (PyUnicode_CompareWithASCIIString(result, EXPECTED) != 0) { \
         PyErr_Format(PyExc_AssertionError,                          \
                      "test_string_from_format: failed at \"%s\" "   \
                      "expected \"%s\" got \"%s\"",                  \
@@ -1130,25 +1622,48 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1(  "%c", "c", 'c');
     CHECK_FORMAT_1( "%0c", "c", 'c');
     CHECK_FORMAT_1("%00c", "c", 'c');
-    CHECK_FORMAT_1( "%2c", "c", 'c');
-    CHECK_FORMAT_1("%02c", "c", 'c');
-    CHECK_FORMAT_1("%.0c", "c", 'c');
-    CHECK_FORMAT_1("%.2c", "c", 'c');
+    CHECK_FORMAT_1( "%2c", NULL, 'c');
+    CHECK_FORMAT_1("%02c", NULL, 'c');
+    CHECK_FORMAT_1("%.0c", NULL, 'c');
+    CHECK_FORMAT_1("%.2c", NULL, 'c');
 
     // Integers
     CHECK_FORMAT_1("%d",             "123",                (int)123);
     CHECK_FORMAT_1("%i",             "123",                (int)123);
     CHECK_FORMAT_1("%u",             "123",       (unsigned int)123);
+    CHECK_FORMAT_1("%x",              "7b",       (unsigned int)123);
+    CHECK_FORMAT_1("%X",              "7B",       (unsigned int)123);
+    CHECK_FORMAT_1("%o",             "173",       (unsigned int)123);
     CHECK_FORMAT_1("%ld",            "123",               (long)123);
     CHECK_FORMAT_1("%li",            "123",               (long)123);
     CHECK_FORMAT_1("%lu",            "123",      (unsigned long)123);
+    CHECK_FORMAT_1("%lx",             "7b",      (unsigned long)123);
+    CHECK_FORMAT_1("%lX",             "7B",      (unsigned long)123);
+    CHECK_FORMAT_1("%lo",            "173",      (unsigned long)123);
     CHECK_FORMAT_1("%lld",           "123",          (long long)123);
     CHECK_FORMAT_1("%lli",           "123",          (long long)123);
     CHECK_FORMAT_1("%llu",           "123", (unsigned long long)123);
+    CHECK_FORMAT_1("%llx",            "7b", (unsigned long long)123);
+    CHECK_FORMAT_1("%llX",            "7B", (unsigned long long)123);
+    CHECK_FORMAT_1("%llo",           "173", (unsigned long long)123);
     CHECK_FORMAT_1("%zd",            "123",         (Py_ssize_t)123);
     CHECK_FORMAT_1("%zi",            "123",         (Py_ssize_t)123);
     CHECK_FORMAT_1("%zu",            "123",             (size_t)123);
-    CHECK_FORMAT_1("%x",              "7b",                (int)123);
+    CHECK_FORMAT_1("%zx",             "7b",             (size_t)123);
+    CHECK_FORMAT_1("%zX",             "7B",             (size_t)123);
+    CHECK_FORMAT_1("%zo",            "173",             (size_t)123);
+    CHECK_FORMAT_1("%td",            "123",          (ptrdiff_t)123);
+    CHECK_FORMAT_1("%ti",            "123",          (ptrdiff_t)123);
+    CHECK_FORMAT_1("%tu",            "123",          (ptrdiff_t)123);
+    CHECK_FORMAT_1("%tx",             "7b",          (ptrdiff_t)123);
+    CHECK_FORMAT_1("%tX",             "7B",          (ptrdiff_t)123);
+    CHECK_FORMAT_1("%to",            "173",          (ptrdiff_t)123);
+    CHECK_FORMAT_1("%jd",            "123",           (intmax_t)123);
+    CHECK_FORMAT_1("%ji",            "123",           (intmax_t)123);
+    CHECK_FORMAT_1("%ju",            "123",          (uintmax_t)123);
+    CHECK_FORMAT_1("%jx",             "7b",          (uintmax_t)123);
+    CHECK_FORMAT_1("%jX",             "7B",          (uintmax_t)123);
+    CHECK_FORMAT_1("%jo",            "173",          (uintmax_t)123);
 
     CHECK_FORMAT_1("%d",            "-123",               (int)-123);
     CHECK_FORMAT_1("%i",            "-123",               (int)-123);
@@ -1158,7 +1673,10 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%lli",          "-123",         (long long)-123);
     CHECK_FORMAT_1("%zd",           "-123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%zi",           "-123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%x",        "ffffff85",               (int)-123);
+    CHECK_FORMAT_1("%td",           "-123",         (ptrdiff_t)-123);
+    CHECK_FORMAT_1("%ti",           "-123",         (ptrdiff_t)-123);
+    CHECK_FORMAT_1("%jd",           "-123",          (intmax_t)-123);
+    CHECK_FORMAT_1("%ji",           "-123",          (intmax_t)-123);
 
     // Integers: width < length
     CHECK_FORMAT_1("%1d",            "123",                (int)123);
@@ -1183,7 +1701,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%1lli",         "-123",         (long long)-123);
     CHECK_FORMAT_1("%1zd",          "-123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%1zi",          "-123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%1x",       "ffffff85",               (int)-123);
 
     // Integers: width > length
     CHECK_FORMAT_1("%5d",          "  123",                (int)123);
@@ -1208,7 +1725,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%5lli",        " -123",         (long long)-123);
     CHECK_FORMAT_1("%5zd",         " -123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%5zi",         " -123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%9x",      " ffffff85",               (int)-123);
 
     // Integers: width > length, 0-flag
     CHECK_FORMAT_1("%05d",         "00123",                (int)123);
@@ -1233,7 +1749,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%05lli",       "-0123",         (long long)-123);
     CHECK_FORMAT_1("%05zd",        "-0123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%05zi",        "-0123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%09x",     "0ffffff85",               (int)-123);
 
     // Integers: precision < length
     CHECK_FORMAT_1("%.1d",           "123",                (int)123);
@@ -1258,7 +1773,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%.1lli",        "-123",         (long long)-123);
     CHECK_FORMAT_1("%.1zd",         "-123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%.1zi",         "-123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%.1x",      "ffffff85",               (int)-123);
 
     // Integers: precision > length
     CHECK_FORMAT_1("%.5d",         "00123",                (int)123);
@@ -1283,7 +1797,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%.5lli",      "-00123",         (long long)-123);
     CHECK_FORMAT_1("%.5zd",       "-00123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%.5zi",       "-00123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%.9x",     "0ffffff85",               (int)-123);
 
     // Integers: width > precision > length
     CHECK_FORMAT_1("%7.5d",      "  00123",                (int)123);
@@ -1308,7 +1821,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%7.5lli",    " -00123",         (long long)-123);
     CHECK_FORMAT_1("%7.5zd",     " -00123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%7.5zi",     " -00123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%10.9x",  " 0ffffff85",               (int)-123);
 
     // Integers: width > precision > length, 0-flag
     CHECK_FORMAT_1("%07.5d",     "0000123",                (int)123);
@@ -1333,7 +1845,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%07.5lli",   "-000123",         (long long)-123);
     CHECK_FORMAT_1("%07.5zd",    "-000123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%07.5zi",    "-000123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%010.9x", "00ffffff85",               (int)-123);
 
     // Integers: precision > width > length
     CHECK_FORMAT_1("%5.7d",      "0000123",                (int)123);
@@ -1358,7 +1869,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%5.7lli",   "-0000123",         (long long)-123);
     CHECK_FORMAT_1("%5.7zd",    "-0000123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%5.7zi",    "-0000123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%9.10x",  "00ffffff85",               (int)-123);
 
     // Integers: precision > width > length, 0-flag
     CHECK_FORMAT_1("%05.7d",     "0000123",                (int)123);
@@ -1383,7 +1893,6 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
     CHECK_FORMAT_1("%05.7lli",  "-0000123",         (long long)-123);
     CHECK_FORMAT_1("%05.7zd",   "-0000123",        (Py_ssize_t)-123);
     CHECK_FORMAT_1("%05.7zi",   "-0000123",        (Py_ssize_t)-123);
-    CHECK_FORMAT_1("%09.10x", "00ffffff85",               (int)-123);
 
     // Integers: precision = 0, arg = 0 (empty string in C)
     CHECK_FORMAT_1("%.0d",             "0",                  (int)0);
@@ -1402,66 +1911,80 @@ test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
 
     // Strings
     CHECK_FORMAT_1("%s",     "None",  "None");
+    CHECK_FORMAT_1("%ls",    "None", L"None");
     CHECK_FORMAT_1("%U",     "None", unicode);
     CHECK_FORMAT_1("%A",     "None", Py_None);
     CHECK_FORMAT_1("%S",     "None", Py_None);
     CHECK_FORMAT_1("%R",     "None", Py_None);
     CHECK_FORMAT_2("%V",     "None", unicode, "ignored");
     CHECK_FORMAT_2("%V",     "None",    NULL,    "None");
+    CHECK_FORMAT_2("%lV",    "None",    NULL,   L"None");
 
     // Strings: width < length
     CHECK_FORMAT_1("%1s",    "None",  "None");
+    CHECK_FORMAT_1("%1ls",   "None", L"None");
     CHECK_FORMAT_1("%1U",    "None", unicode);
     CHECK_FORMAT_1("%1A",    "None", Py_None);
     CHECK_FORMAT_1("%1S",    "None", Py_None);
     CHECK_FORMAT_1("%1R",    "None", Py_None);
     CHECK_FORMAT_2("%1V",    "None", unicode, "ignored");
     CHECK_FORMAT_2("%1V",    "None",    NULL,    "None");
+    CHECK_FORMAT_2("%1lV",   "None",    NULL,    L"None");
 
     // Strings: width > length
     CHECK_FORMAT_1("%5s",   " None",  "None");
+    CHECK_FORMAT_1("%5ls",  " None", L"None");
     CHECK_FORMAT_1("%5U",   " None", unicode);
     CHECK_FORMAT_1("%5A",   " None", Py_None);
     CHECK_FORMAT_1("%5S",   " None", Py_None);
     CHECK_FORMAT_1("%5R",   " None", Py_None);
     CHECK_FORMAT_2("%5V",   " None", unicode, "ignored");
     CHECK_FORMAT_2("%5V",   " None",    NULL,    "None");
+    CHECK_FORMAT_2("%5lV",  " None",    NULL,   L"None");
 
     // Strings: precision < length
     CHECK_FORMAT_1("%.1s",      "N",  "None");
+    CHECK_FORMAT_1("%.1ls",     "N", L"None");
     CHECK_FORMAT_1("%.1U",      "N", unicode);
     CHECK_FORMAT_1("%.1A",      "N", Py_None);
     CHECK_FORMAT_1("%.1S",      "N", Py_None);
     CHECK_FORMAT_1("%.1R",      "N", Py_None);
     CHECK_FORMAT_2("%.1V",      "N", unicode, "ignored");
     CHECK_FORMAT_2("%.1V",      "N",    NULL,    "None");
+    CHECK_FORMAT_2("%.1lV",     "N",    NULL,   L"None");
 
     // Strings: precision > length
     CHECK_FORMAT_1("%.5s",   "None",  "None");
+    CHECK_FORMAT_1("%.5ls",  "None", L"None");
     CHECK_FORMAT_1("%.5U",   "None", unicode);
     CHECK_FORMAT_1("%.5A",   "None", Py_None);
     CHECK_FORMAT_1("%.5S",   "None", Py_None);
     CHECK_FORMAT_1("%.5R",   "None", Py_None);
     CHECK_FORMAT_2("%.5V",   "None", unicode, "ignored");
     CHECK_FORMAT_2("%.5V",   "None",    NULL,    "None");
+    CHECK_FORMAT_2("%.5lV",  "None",    NULL,   L"None");
 
     // Strings: precision < length, width > length
     CHECK_FORMAT_1("%5.1s", "    N",  "None");
+    CHECK_FORMAT_1("%5.1ls","    N", L"None");
     CHECK_FORMAT_1("%5.1U", "    N", unicode);
     CHECK_FORMAT_1("%5.1A", "    N", Py_None);
     CHECK_FORMAT_1("%5.1S", "    N", Py_None);
     CHECK_FORMAT_1("%5.1R", "    N", Py_None);
     CHECK_FORMAT_2("%5.1V", "    N", unicode, "ignored");
     CHECK_FORMAT_2("%5.1V", "    N",    NULL,    "None");
+    CHECK_FORMAT_2("%5.1lV","    N",    NULL,   L"None");
 
     // Strings: width < length, precision > length
     CHECK_FORMAT_1("%1.5s",  "None",  "None");
+    CHECK_FORMAT_1("%1.5ls", "None",  L"None");
     CHECK_FORMAT_1("%1.5U",  "None", unicode);
     CHECK_FORMAT_1("%1.5A",  "None", Py_None);
     CHECK_FORMAT_1("%1.5S",  "None", Py_None);
     CHECK_FORMAT_1("%1.5R",  "None", Py_None);
     CHECK_FORMAT_2("%1.5V",  "None", unicode, "ignored");
     CHECK_FORMAT_2("%1.5V",  "None",    NULL,    "None");
+    CHECK_FORMAT_2("%1.5lV", "None",    NULL,   L"None");
 
     Py_XDECREF(unicode);
     Py_RETURN_NONE;
@@ -1495,6 +2018,7 @@ static PyMethodDef TestMethods[] = {
     {"unicode_substring",        unicode_substring,              METH_VARARGS},
     {"unicode_getlength",        unicode_getlength,              METH_O},
     {"unicode_readchar",         unicode_readchar,               METH_VARARGS},
+    {"unicode_fromencodedobject",unicode_fromencodedobject,      METH_VARARGS},
     {"unicode_fromobject",       unicode_fromobject,             METH_O},
     {"unicode_interninplace",    unicode_interninplace,          METH_O},
     {"unicode_internfromstring", unicode_internfromstring,       METH_O},
@@ -1509,10 +2033,44 @@ static PyMethodDef TestMethods[] = {
     {"unicode_asutf8",           unicode_asutf8,                 METH_VARARGS},
     {"unicode_asutf8andsize",    unicode_asutf8andsize,          METH_VARARGS},
     {"unicode_asutf8andsize_null",unicode_asutf8andsize_null,    METH_VARARGS},
+    {"unicode_getdefaultencoding",unicode_getdefaultencoding,    METH_NOARGS},
+    {"unicode_decode",           unicode_decode,                 METH_VARARGS},
+    {"unicode_asencodedstring",  unicode_asencodedstring,        METH_VARARGS},
+    {"unicode_buildencodingmap", unicode_buildencodingmap,       METH_O},
+    {"unicode_decodeutf7",       unicode_decodeutf7,             METH_VARARGS},
+    {"unicode_decodeutf7stateful",unicode_decodeutf7stateful,    METH_VARARGS},
     {"unicode_decodeutf8",       unicode_decodeutf8,             METH_VARARGS},
     {"unicode_decodeutf8stateful",unicode_decodeutf8stateful,    METH_VARARGS},
-    {"unicode_getdefaultencoding",unicode_getdefaultencoding,    METH_NOARGS},
-    {"unicode_transformdecimalandspacetoascii", unicode_transformdecimalandspacetoascii, METH_O},
+    {"unicode_asutf8string",     unicode_asutf8string,           METH_O},
+    {"unicode_decodeutf16",      unicode_decodeutf16,            METH_VARARGS},
+    {"unicode_decodeutf16stateful",unicode_decodeutf16stateful,  METH_VARARGS},
+    {"unicode_asutf16string",    unicode_asutf16string,          METH_O},
+    {"unicode_decodeutf32",      unicode_decodeutf32,            METH_VARARGS},
+    {"unicode_decodeutf32stateful",unicode_decodeutf32stateful,  METH_VARARGS},
+    {"unicode_asutf32string",    unicode_asutf32string,          METH_O},
+    {"unicode_decodeunicodeescape",unicode_decodeunicodeescape,  METH_VARARGS},
+    {"unicode_asunicodeescapestring",unicode_asunicodeescapestring,METH_O},
+    {"unicode_decoderawunicodeescape",unicode_decoderawunicodeescape,METH_VARARGS},
+    {"unicode_asrawunicodeescapestring",unicode_asrawunicodeescapestring,METH_O},
+    {"unicode_decodelatin1",     unicode_decodelatin1,           METH_VARARGS},
+    {"unicode_aslatin1string",   unicode_aslatin1string,         METH_O},
+    {"unicode_decodeascii",      unicode_decodeascii,            METH_VARARGS},
+    {"unicode_asasciistring",    unicode_asasciistring,          METH_O},
+    {"unicode_decodecharmap",    unicode_decodecharmap,          METH_VARARGS},
+    {"unicode_ascharmapstring",  unicode_ascharmapstring,        METH_VARARGS},
+#ifdef MS_WINDOWS
+    {"unicode_decodembcs",       unicode_decodembcs,             METH_VARARGS},
+    {"unicode_decodembcsstateful",unicode_decodembcsstateful,    METH_VARARGS},
+    {"unicode_decodecodepagestateful",unicode_decodecodepagestateful,METH_VARARGS},
+    {"unicode_asmbcsstring",     unicode_asmbcsstring,           METH_O},
+    {"unicode_encodecodepage",   unicode_encodecodepage,         METH_VARARGS},
+#endif /* MS_WINDOWS */
+    {"unicode_decodelocaleandsize",unicode_decodelocaleandsize,  METH_VARARGS},
+    {"unicode_decodelocale",     unicode_decodelocale,           METH_VARARGS},
+    {"unicode_encodelocale",     unicode_encodelocale,           METH_VARARGS},
+    {"unicode_decodefsdefault",  unicode_decodefsdefault,        METH_VARARGS},
+    {"unicode_decodefsdefaultandsize",unicode_decodefsdefaultandsize,METH_VARARGS},
+    {"unicode_encodefsdefault",  unicode_encodefsdefault,        METH_O},
     {"unicode_concat",           unicode_concat,                 METH_VARARGS},
     {"unicode_splitlines",       unicode_splitlines,             METH_VARARGS},
     {"unicode_split",            unicode_split,                  METH_VARARGS},
@@ -1528,6 +2086,8 @@ static PyMethodDef TestMethods[] = {
     {"unicode_replace",          unicode_replace,                METH_VARARGS},
     {"unicode_compare",          unicode_compare,                METH_VARARGS},
     {"unicode_comparewithasciistring",unicode_comparewithasciistring,METH_VARARGS},
+    {"unicode_equaltoutf8",      unicode_equaltoutf8,            METH_VARARGS},
+    {"unicode_equaltoutf8andsize",unicode_equaltoutf8andsize,    METH_VARARGS},
     {"unicode_richcompare",      unicode_richcompare,            METH_VARARGS},
     {"unicode_format",           unicode_format,                 METH_VARARGS},
     {"unicode_contains",         unicode_contains,               METH_VARARGS},
diff --git a/Modules/_testcapi/util.h b/Modules/_testcapi/util.h
new file mode 100644
index 00000000000000..f26d7656a10138
--- /dev/null
+++ b/Modules/_testcapi/util.h
@@ -0,0 +1,33 @@
+#define NULLABLE(x) do {                    \
+        if (x == Py_None) {                 \
+            x = NULL;                       \
+        }                                   \
+    } while (0);
+
+#define RETURN_INT(value) do {              \
+        int _ret = (value);                 \
+        if (_ret == -1) {                   \
+            assert(PyErr_Occurred());       \
+            return NULL;                    \
+        }                                   \
+        assert(!PyErr_Occurred());          \
+        return PyLong_FromLong(_ret);       \
+    } while (0)
+
+#define RETURN_SIZE(value) do {             \
+        Py_ssize_t _ret = (value);          \
+        if (_ret == -1) {                   \
+            assert(PyErr_Occurred());       \
+            return NULL;                    \
+        }                                   \
+        assert(!PyErr_Occurred());          \
+        return PyLong_FromSsize_t(_ret);    \
+    } while (0)
+
+/* Marker to check that pointer value was set. */
+static const char uninitialized[] = "uninitialized";
+#define UNINITIALIZED_PTR ((void *)uninitialized)
+/* Marker to check that Py_ssize_t value was set. */
+#define UNINITIALIZED_SIZE ((Py_ssize_t)236892191)
+/* Marker to check that integer value was set. */
+#define UNINITIALIZED_INT (63256717)
diff --git a/Modules/_testcapi/vectorcall.c b/Modules/_testcapi/vectorcall.c
index dcbc973c9fb991..b30c5e8704c8af 100644
--- a/Modules/_testcapi/vectorcall.c
+++ b/Modules/_testcapi/vectorcall.c
@@ -1,9 +1,16 @@
+// clinic/vectorcall.c.h uses internal pycore_modsupport.h API
+#define PYTESTCAPI_NEED_INTERNAL_API
+
 #include "parts.h"
 #include "clinic/vectorcall.c.h"
 
-#include "structmember.h"           // PyMemberDef
+
 #include <stddef.h>                 // offsetof
 
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
 
 /* Test PEP 590 - Vectorcall */
 
@@ -25,35 +32,22 @@ fastcall_args(PyObject *args, PyObject ***stack, Py_ssize_t *nargs)
     return 0;
 }
 
+/*[clinic input]
+_testcapi.pyobject_fastcalldict
+    func: object
+    func_args: object
+    kwargs: object
+    /
+[clinic start generated code]*/
 
 static PyObject *
-test_pyobject_fastcall(PyObject *self, PyObject *args)
-{
-    PyObject *func, *func_args;
-    PyObject **stack;
-    Py_ssize_t nargs;
-
-    if (!PyArg_ParseTuple(args, "OO", &func, &func_args)) {
-        return NULL;
-    }
-
-    if (fastcall_args(func_args, &stack, &nargs) < 0) {
-        return NULL;
-    }
-    return _PyObject_FastCall(func, stack, nargs);
-}
-
-static PyObject *
-test_pyobject_fastcalldict(PyObject *self, PyObject *args)
+_testcapi_pyobject_fastcalldict_impl(PyObject *module, PyObject *func,
+                                     PyObject *func_args, PyObject *kwargs)
+/*[clinic end generated code: output=35902ece94de4418 input=b9c0196ca7d5f9e4]*/
 {
-    PyObject *func, *func_args, *kwargs;
     PyObject **stack;
     Py_ssize_t nargs;
 
-    if (!PyArg_ParseTuple(args, "OOO", &func, &func_args, &kwargs)) {
-        return NULL;
-    }
-
     if (fastcall_args(func_args, &stack, &nargs) < 0) {
         return NULL;
     }
@@ -69,17 +63,22 @@ test_pyobject_fastcalldict(PyObject *self, PyObject *args)
     return PyObject_VectorcallDict(func, stack, nargs, kwargs);
 }
 
+/*[clinic input]
+_testcapi.pyobject_vectorcall
+    func: object
+    func_args: object
+    kwnames: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-test_pyobject_vectorcall(PyObject *self, PyObject *args)
+_testcapi_pyobject_vectorcall_impl(PyObject *module, PyObject *func,
+                                   PyObject *func_args, PyObject *kwnames)
+/*[clinic end generated code: output=ff77245bc6afe0d8 input=a0668dfef625764c]*/
 {
-    PyObject *func, *func_args, *kwnames = NULL;
     PyObject **stack;
     Py_ssize_t nargs, nkw;
 
-    if (!PyArg_ParseTuple(args, "OOO", &func, &func_args, &kwnames)) {
-        return NULL;
-    }
-
     if (fastcall_args(func_args, &stack, &nargs) < 0) {
         return NULL;
     }
@@ -120,17 +119,19 @@ function_setvectorcall(PyObject *self, PyObject *func)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.pyvectorcall_call
+    func: object
+    argstuple: object
+    kwargs: object = NULL
+    /
+[clinic start generated code]*/
+
 static PyObject *
-test_pyvectorcall_call(PyObject *self, PyObject *args)
+_testcapi_pyvectorcall_call_impl(PyObject *module, PyObject *func,
+                                 PyObject *argstuple, PyObject *kwargs)
+/*[clinic end generated code: output=809046fe78511306 input=4376ee7cabd698ce]*/
 {
-    PyObject *func;
-    PyObject *argstuple;
-    PyObject *kwargs = NULL;
-
-    if (!PyArg_ParseTuple(args, "OO|O", &func, &argstuple, &kwargs)) {
-        return NULL;
-    }
-
     if (!PyTuple_Check(argstuple)) {
         PyErr_SetString(PyExc_TypeError, "args must be a tuple");
         return NULL;
@@ -157,10 +158,9 @@ VectorCallClass_vectorcall(PyObject *callable,
 }
 
 /*[clinic input]
-module _testcapi
 class _testcapi.VectorCallClass "PyObject *" "&PyType_Type"
 [clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=8423a8e919f2f0df]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=95c63c1a47f9a995]*/
 
 /*[clinic input]
 _testcapi.VectorCallClass.set_vectorcall
@@ -199,7 +199,7 @@ PyMethodDef VectorCallClass_methods[] = {
 };
 
 PyMemberDef VectorCallClass_members[] = {
-    {"__vectorcalloffset__", T_PYSSIZET, 0/* set later */, READONLY},
+    {"__vectorcalloffset__", Py_T_PYSSIZET, 0/* set later */, Py_READONLY},
     {NULL}
 };
 
@@ -259,11 +259,10 @@ _testcapi_has_vectorcall_flag_impl(PyObject *module, PyTypeObject *type)
 }
 
 static PyMethodDef TestMethods[] = {
-    {"pyobject_fastcall", test_pyobject_fastcall, METH_VARARGS},
-    {"pyobject_fastcalldict", test_pyobject_fastcalldict, METH_VARARGS},
-    {"pyobject_vectorcall", test_pyobject_vectorcall, METH_VARARGS},
+    _TESTCAPI_PYOBJECT_FASTCALLDICT_METHODDEF
+    _TESTCAPI_PYOBJECT_VECTORCALL_METHODDEF
     {"function_setvectorcall", function_setvectorcall, METH_O},
-    {"pyvectorcall_call", test_pyvectorcall_call, METH_VARARGS},
+    _TESTCAPI_PYVECTORCALL_CALL_METHODDEF
     _TESTCAPI_MAKE_VECTORCALL_CLASS_METHODDEF
     _TESTCAPI_HAS_VECTORCALL_FLAG_METHODDEF
     {NULL},
diff --git a/Modules/_testcapi/vectorcall_limited.c b/Modules/_testcapi/vectorcall_limited.c
index a69f1d3f2a79b5..0a650f1b351d2d 100644
--- a/Modules/_testcapi/vectorcall_limited.c
+++ b/Modules/_testcapi/vectorcall_limited.c
@@ -1,11 +1,20 @@
-#define Py_LIMITED_API 0x030c0000 // 3.12
-#include "parts.h"
+/* Test Vectorcall in the limited API */
 
-#ifdef LIMITED_API_AVAILABLE
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
 
-#include "structmember.h"         // PyMemberDef
+#ifndef Py_GIL_DISABLED
+#define Py_LIMITED_API 0x030c0000 // 3.12
+#endif
 
-/* Test Vectorcall in the limited API */
+#include "parts.h"
+#include "clinic/vectorcall_limited.c.h"
+
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
 
 static PyObject *
 LimitedVectorCallClass_tpcall(PyObject *self, PyObject *args, PyObject *kwargs) {
@@ -32,8 +41,16 @@ LimitedVectorCallClass_new(PyTypeObject *tp, PyTypeObject *a, PyTypeObject *kw)
     return self;
 }
 
+/*[clinic input]
+_testcapi.call_vectorcall
+
+    callable: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-call_vectorcall(PyObject* self, PyObject *callable)
+_testcapi_call_vectorcall(PyObject *module, PyObject *callable)
+/*[clinic end generated code: output=bae81eec97fcaad7 input=55d88f92240957ee]*/
 {
     PyObject *args[3] = { NULL, NULL, NULL };
     PyObject *kwname = NULL, *kwnames = NULL, *result = NULL;
@@ -77,8 +94,16 @@ call_vectorcall(PyObject* self, PyObject *callable)
     return result;
 }
 
+/*[clinic input]
+_testcapi.call_vectorcall_method
+
+    callable: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-call_vectorcall_method(PyObject* self, PyObject *callable)
+_testcapi_call_vectorcall_method(PyObject *module, PyObject *callable)
+/*[clinic end generated code: output=e661f48dda08b6fb input=5ba81c27511395b6]*/
 {
     PyObject *args[3] = { NULL, NULL, NULL };
     PyObject *name = NULL, *kwname = NULL,
@@ -132,7 +157,7 @@ call_vectorcall_method(PyObject* self, PyObject *callable)
 }
 
 static PyMemberDef LimitedVectorCallClass_members[] = {
-    {"__vectorcalloffset__", T_PYSSIZET, sizeof(PyObject), READONLY},
+    {"__vectorcalloffset__", Py_T_PYSSIZET, sizeof(PyObject), Py_READONLY},
     {NULL}
 };
 
@@ -153,8 +178,8 @@ static PyType_Spec LimitedVectorCallClass_spec = {
 };
 
 static PyMethodDef TestMethods[] = {
-    {"call_vectorcall", call_vectorcall, METH_O},
-    {"call_vectorcall_method", call_vectorcall_method, METH_O},
+    _TESTCAPI_CALL_VECTORCALL_METHODDEF
+    _TESTCAPI_CALL_VECTORCALL_METHOD_METHODDEF
     {NULL},
 };
 
@@ -175,5 +200,3 @@ _PyTestCapi_Init_VectorcallLimited(PyObject *m) {
 
     return 0;
 }
-
-#endif // LIMITED_API_AVAILABLE
diff --git a/Modules/_testcapi/watchers.c b/Modules/_testcapi/watchers.c
index 1284fdc2767b6c..a763ff46a3c290 100644
--- a/Modules/_testcapi/watchers.c
+++ b/Modules/_testcapi/watchers.c
@@ -1,9 +1,19 @@
+// clinic/watchers.c.h uses internal pycore_modsupport.h API
+#define PYTESTCAPI_NEED_INTERNAL_API
+
 #include "parts.h"
 
+#include "clinic/watchers.c.h"
+
 #define Py_BUILD_CORE
 #include "pycore_function.h"  // FUNC_MAX_WATCHERS
 #include "pycore_code.h"  // CODE_MAX_WATCHERS
 
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
+
 // Test dict watching
 static PyObject *g_dict_watch_events;
 static int g_dict_watchers_installed;
@@ -119,28 +129,31 @@ clear_dict_watcher(PyObject *self, PyObject *watcher_id)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.watch_dict
+    watcher_id: int
+    dict: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-watch_dict(PyObject *self, PyObject *args)
+_testcapi_watch_dict_impl(PyObject *module, int watcher_id, PyObject *dict)
+/*[clinic end generated code: output=1426e0273cebe2d8 input=269b006d60c358bd]*/
 {
-    PyObject *dict;
-    int watcher_id;
-    if (!PyArg_ParseTuple(args, "iO", &watcher_id, &dict)) {
-        return NULL;
-    }
     if (PyDict_Watch(watcher_id, dict)) {
         return NULL;
     }
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.unwatch_dict = _testcapi.watch_dict
+[clinic start generated code]*/
+
 static PyObject *
-unwatch_dict(PyObject *self, PyObject *args)
+_testcapi_unwatch_dict_impl(PyObject *module, int watcher_id, PyObject *dict)
+/*[clinic end generated code: output=512b1a71ae33c351 input=cae7dc1b6f7713b8]*/
 {
-    PyObject *dict;
-    int watcher_id;
-    if (!PyArg_ParseTuple(args, "iO", &watcher_id, &dict)) {
-        return NULL;
-    }
     if (PyDict_Unwatch(watcher_id, dict)) {
         return NULL;
     }
@@ -250,28 +263,31 @@ get_type_modified_events(PyObject *self, PyObject *Py_UNUSED(args))
     return Py_NewRef(g_type_modified_events);
 }
 
+/*[clinic input]
+_testcapi.watch_type
+    watcher_id: int
+    type: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-watch_type(PyObject *self, PyObject *args)
+_testcapi_watch_type_impl(PyObject *module, int watcher_id, PyObject *type)
+/*[clinic end generated code: output=fdf4777126724fc4 input=5a808bf12be7e3ed]*/
 {
-    PyObject *type;
-    int watcher_id;
-    if (!PyArg_ParseTuple(args, "iO", &watcher_id, &type)) {
-        return NULL;
-    }
     if (PyType_Watch(watcher_id, type)) {
         return NULL;
     }
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.unwatch_type = _testcapi.watch_type
+[clinic start generated code]*/
+
 static PyObject *
-unwatch_type(PyObject *self, PyObject *args)
+_testcapi_unwatch_type_impl(PyObject *module, int watcher_id, PyObject *type)
+/*[clinic end generated code: output=0389672d4ad5f68b input=6701911fb45edc9e]*/
 {
-    PyObject *type;
-    int watcher_id;
-    if (!PyArg_ParseTuple(args, "iO", &watcher_id, &type)) {
-        return NULL;
-    }
     if (PyType_Unwatch(watcher_id, type)) {
         return NULL;
     }
@@ -282,6 +298,7 @@ unwatch_type(PyObject *self, PyObject *args)
 // Test code object watching
 
 #define NUM_CODE_WATCHERS 2
+static int code_watcher_ids[NUM_CODE_WATCHERS] = {-1, -1};
 static int num_code_object_created_events[NUM_CODE_WATCHERS] = {0, 0};
 static int num_code_object_destroyed_events[NUM_CODE_WATCHERS] = {0, 0};
 
@@ -332,11 +349,13 @@ add_code_watcher(PyObject *self, PyObject *which_watcher)
     long which_l = PyLong_AsLong(which_watcher);
     if (which_l == 0) {
         watcher_id = PyCode_AddWatcher(first_code_object_callback);
+        code_watcher_ids[0] = watcher_id;
         num_code_object_created_events[0] = 0;
         num_code_object_destroyed_events[0] = 0;
     }
     else if (which_l == 1) {
         watcher_id = PyCode_AddWatcher(second_code_object_callback);
+        code_watcher_ids[1] = watcher_id;
         num_code_object_created_events[1] = 0;
         num_code_object_destroyed_events[1] = 0;
     }
@@ -362,9 +381,14 @@ clear_code_watcher(PyObject *self, PyObject *watcher_id)
         return NULL;
     }
     // reset static events counters
-    if (watcher_id_l >= 0 && watcher_id_l < NUM_CODE_WATCHERS) {
-        num_code_object_created_events[watcher_id_l] = 0;
-        num_code_object_destroyed_events[watcher_id_l] = 0;
+    if (watcher_id_l >= 0) {
+        for (int i = 0; i < NUM_CODE_WATCHERS; i++) {
+            if (watcher_id_l == code_watcher_ids[i]) {
+                code_watcher_ids[i] = -1;
+                num_code_object_created_events[i] = 0;
+                num_code_object_destroyed_events[i] = 0;
+            }
+        }
     }
     Py_RETURN_NONE;
 }
@@ -419,9 +443,9 @@ allocate_too_many_code_watchers(PyObject *self, PyObject *args)
 
 // Test function watchers
 
-#define NUM_FUNC_WATCHERS 2
-static PyObject *pyfunc_watchers[NUM_FUNC_WATCHERS];
-static int func_watcher_ids[NUM_FUNC_WATCHERS] = {-1, -1};
+#define NUM_TEST_FUNC_WATCHERS 2
+static PyObject *pyfunc_watchers[NUM_TEST_FUNC_WATCHERS];
+static int func_watcher_ids[NUM_TEST_FUNC_WATCHERS] = {-1, -1};
 
 static PyObject *
 get_id(PyObject *obj)
@@ -495,7 +519,7 @@ second_func_watcher_callback(PyFunction_WatchEvent event,
     return call_pyfunc_watcher(pyfunc_watchers[1], event, func, new_value);
 }
 
-static PyFunction_WatchCallback func_watcher_callbacks[NUM_FUNC_WATCHERS] = {
+static PyFunction_WatchCallback func_watcher_callbacks[NUM_TEST_FUNC_WATCHERS] = {
     first_func_watcher_callback,
     second_func_watcher_callback
 };
@@ -503,13 +527,7 @@ static PyFunction_WatchCallback func_watcher_callbacks[NUM_FUNC_WATCHERS] = {
 static int
 add_func_event(PyObject *module, const char *name, PyFunction_WatchEvent event)
 {
-    PyObject *value = PyLong_FromLong(event);
-    if (value == NULL) {
-        return -1;
-    }
-    int ok = PyModule_AddObjectRef(module, name, value);
-    Py_DECREF(value);
-    return ok;
+    return PyModule_Add(module, name, PyLong_FromLong(event));
 }
 
 static PyObject *
@@ -520,26 +538,25 @@ add_func_watcher(PyObject *self, PyObject *func)
         return NULL;
     }
     int idx = -1;
-    for (int i = 0; i < NUM_FUNC_WATCHERS; i++) {
+    for (int i = 0; i < NUM_TEST_FUNC_WATCHERS; i++) {
         if (func_watcher_ids[i] == -1) {
             idx = i;
             break;
         }
     }
     if (idx == -1) {
-        PyErr_SetString(PyExc_RuntimeError, "no free watchers");
-        return NULL;
-    }
-    PyObject *result = PyLong_FromLong(idx);
-    if (result == NULL) {
+        PyErr_SetString(PyExc_RuntimeError, "no free test watchers");
         return NULL;
     }
     func_watcher_ids[idx] = PyFunction_AddWatcher(func_watcher_callbacks[idx]);
     if (func_watcher_ids[idx] < 0) {
-        Py_DECREF(result);
         return NULL;
     }
     pyfunc_watchers[idx] = Py_NewRef(func);
+    PyObject *result = PyLong_FromLong(func_watcher_ids[idx]);
+    if (result == NULL) {
+        return NULL;
+    }
     return result;
 }
 
@@ -556,7 +573,7 @@ clear_func_watcher(PyObject *self, PyObject *watcher_id_obj)
         return NULL;
     }
     int idx = -1;
-    for (int i = 0; i < NUM_FUNC_WATCHERS; i++) {
+    for (int i = 0; i < NUM_TEST_FUNC_WATCHERS; i++) {
         if (func_watcher_ids[i] == wid) {
             idx = i;
             break;
@@ -605,29 +622,34 @@ allocate_too_many_func_watchers(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.set_func_defaults_via_capi
+    func: object
+    defaults: object
+    /
+[clinic start generated code]*/
+
 static PyObject *
-set_func_defaults(PyObject *self, PyObject *args)
+_testcapi_set_func_defaults_via_capi_impl(PyObject *module, PyObject *func,
+                                          PyObject *defaults)
+/*[clinic end generated code: output=caf0cb39db31ac24 input=e04a8508ca9d42fc]*/
 {
-    PyObject *func = NULL;
-    PyObject *defaults = NULL;
-    if (!PyArg_ParseTuple(args, "OO", &func, &defaults)) {
-        return NULL;
-    }
     if (PyFunction_SetDefaults(func, defaults) < 0) {
         return NULL;
     }
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+_testcapi.set_func_kwdefaults_via_capi = _testcapi.set_func_defaults_via_capi
+[clinic start generated code]*/
+
 static PyObject *
-set_func_kwdefaults(PyObject *self, PyObject *args)
+_testcapi_set_func_kwdefaults_via_capi_impl(PyObject *module, PyObject *func,
+                                            PyObject *defaults)
+/*[clinic end generated code: output=9ed3b08177025070 input=f3cd1ca3c18de8ce]*/
 {
-    PyObject *func = NULL;
-    PyObject *kwdefaults = NULL;
-    if (!PyArg_ParseTuple(args, "OO", &func, &kwdefaults)) {
-        return NULL;
-    }
-    if (PyFunction_SetKwDefaults(func, kwdefaults) < 0) {
+    if (PyFunction_SetKwDefaults(func, defaults) < 0) {
         return NULL;
     }
     Py_RETURN_NONE;
@@ -637,16 +659,16 @@ static PyMethodDef test_methods[] = {
     // Dict watchers.
     {"add_dict_watcher",         add_dict_watcher,        METH_O,       NULL},
     {"clear_dict_watcher",       clear_dict_watcher,      METH_O,       NULL},
-    {"watch_dict",               watch_dict,              METH_VARARGS, NULL},
-    {"unwatch_dict",             unwatch_dict,            METH_VARARGS, NULL},
+    _TESTCAPI_WATCH_DICT_METHODDEF
+    _TESTCAPI_UNWATCH_DICT_METHODDEF
     {"get_dict_watcher_events",
      (PyCFunction) get_dict_watcher_events,               METH_NOARGS,  NULL},
 
     // Type watchers.
     {"add_type_watcher",         add_type_watcher,        METH_O,       NULL},
     {"clear_type_watcher",       clear_type_watcher,      METH_O,       NULL},
-    {"watch_type",               watch_type,              METH_VARARGS, NULL},
-    {"unwatch_type",             unwatch_type,            METH_VARARGS, NULL},
+    _TESTCAPI_WATCH_TYPE_METHODDEF
+    _TESTCAPI_UNWATCH_TYPE_METHODDEF
     {"get_type_modified_events",
      (PyCFunction) get_type_modified_events,              METH_NOARGS, NULL},
 
@@ -663,8 +685,8 @@ static PyMethodDef test_methods[] = {
     // Function watchers.
     {"add_func_watcher",         add_func_watcher,        METH_O,       NULL},
     {"clear_func_watcher",       clear_func_watcher,      METH_O,       NULL},
-    {"set_func_defaults_via_capi", set_func_defaults,     METH_VARARGS, NULL},
-    {"set_func_kwdefaults_via_capi", set_func_kwdefaults, METH_VARARGS, NULL},
+    _TESTCAPI_SET_FUNC_DEFAULTS_VIA_CAPI_METHODDEF
+    _TESTCAPI_SET_FUNC_KWDEFAULTS_VIA_CAPI_METHODDEF
     {"allocate_too_many_func_watchers", allocate_too_many_func_watchers,
      METH_NOARGS, NULL},
     {NULL},
diff --git a/Modules/_testcapi_feature_macros.inc b/Modules/_testcapi_feature_macros.inc
index b1763b57d913c2..a076e714980074 100644
--- a/Modules/_testcapi_feature_macros.inc
+++ b/Modules/_testcapi_feature_macros.inc
@@ -1,4 +1,4 @@
-// Generated by Tools/scripts/stable_abi.py
+// Generated by Tools/build/stable_abi.py
 
 // Add an entry in dict `result` for each Stable ABI feature macro.
 
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index c29d29c4791134..9fdd67093338e4 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -5,45 +5,30 @@
  * standard Python regression test, via Lib/test/test_capi.py.
  */
 
-/* This module tests the public (Include/ and Include/cpython/) C API.
-   The internal C API must not be used here: use _testinternalcapi for that.
-
-   The Visual Studio projects builds _testcapi with Py_BUILD_CORE_MODULE
-   macro defined, but only the public C API must be tested here. */
-
-#undef Py_BUILD_CORE_MODULE
-#undef Py_BUILD_CORE_BUILTIN
-
-/* Always enable assertions */
-#undef NDEBUG
+// Include parts.h first since it takes care of NDEBUG and Py_BUILD_CORE macros
+// and including Python.h.
+//
+// Several parts of this module are broken out into files in _testcapi/.
+// Include definitions from there.
+#include "_testcapi/parts.h"
 
-#define PY_SSIZE_T_CLEAN
+#include "frameobject.h"          // PyFrame_New()
+#include "marshal.h"              // PyMarshal_WriteLongToFile()
 
-#include "Python.h"
-#include "frameobject.h"          // PyFrame_New
-#include "marshal.h"              // PyMarshal_WriteLongToFile
-#include "structmember.h"         // for offsetof(), T_OBJECT
 #include <float.h>                // FLT_MAX
 #include <signal.h>
-#ifndef MS_WINDOWS
-#include <unistd.h>
-#endif
+#include <stddef.h>               // offsetof()
 
 #ifdef HAVE_SYS_WAIT_H
-#include <sys/wait.h>             // W_STOPCODE
-#endif
-
-#ifdef Py_BUILD_CORE
-#  error "_testcapi must test the public Python C API, not CPython internal C API"
+#  include <sys/wait.h>           // W_STOPCODE
 #endif
 
 #ifdef bool
-#  error "The public headers should not include <stdbool.h>, see bpo-46748"
+#  error "The public headers should not include <stdbool.h>, see gh-48924"
 #endif
 
-// Several parts of this module are broken out into files in _testcapi/.
-// Include definitions from there.
-#include "_testcapi/parts.h"
+#include "_testcapi/util.h"
+
 
 // Forward declarations
 static struct PyModuleDef _testcapimodule;
@@ -219,10 +204,13 @@ test_dict_inner(int count)
         Py_DECREF(v);
     }
 
+    k = v = UNINITIALIZED_PTR;
     while (PyDict_Next(dict, &pos, &k, &v)) {
         PyObject *o;
         iterations++;
 
+        assert(k != UNINITIALIZED_PTR);
+        assert(v != UNINITIALIZED_PTR);
         i = PyLong_AS_LONG(v) + 1;
         o = PyLong_FromLong(i);
         if (o == NULL)
@@ -232,7 +220,10 @@ test_dict_inner(int count)
             return -1;
         }
         Py_DECREF(o);
+        k = v = UNINITIALIZED_PTR;
     }
+    assert(k == UNINITIALIZED_PTR);
+    assert(v == UNINITIALIZED_PTR);
 
     Py_DECREF(dict);
 
@@ -262,26 +253,6 @@ test_dict_iteration(PyObject* self, PyObject *Py_UNUSED(ignored))
     Py_RETURN_NONE;
 }
 
-static PyObject*
-dict_getitem_knownhash(PyObject *self, PyObject *args)
-{
-    PyObject *mp, *key, *result;
-    Py_ssize_t hash;
-
-    if (!PyArg_ParseTuple(args, "OOn:dict_getitem_knownhash",
-                          &mp, &key, &hash)) {
-        return NULL;
-    }
-
-    result = _PyDict_GetItem_KnownHash(mp, key, (Py_hash_t)hash);
-    if (result == NULL && !PyErr_Occurred()) {
-        _PyErr_SetKeyError(key);
-        return NULL;
-    }
-
-    return Py_XNewRef(result);
-}
-
 /* Issue #4701: Check that PyObject_Hash implicitly calls
  *   PyType_Ready if it hasn't already been called
  */
@@ -415,6 +386,41 @@ raise_error(void *unused)
     return NULL;
 }
 
+static PyObject *
+py_buildvalue(PyObject *self, PyObject *args)
+{
+    const char *fmt;
+    PyObject *objs[10] = {NULL};
+    if (!PyArg_ParseTuple(args, "s|OOOOOOOOOO", &fmt,
+            &objs[0], &objs[1], &objs[2], &objs[3], &objs[4],
+            &objs[5], &objs[6], &objs[7], &objs[8], &objs[9]))
+    {
+        return NULL;
+    }
+    for(int i = 0; i < 10; i++) {
+        NULLABLE(objs[i]);
+    }
+    return Py_BuildValue(fmt,
+            objs[0], objs[1], objs[2], objs[3], objs[4],
+            objs[5], objs[6], objs[7], objs[8], objs[9]);
+}
+
+static PyObject *
+py_buildvalue_ints(PyObject *self, PyObject *args)
+{
+    const char *fmt;
+    unsigned int values[10] = {0};
+    if (!PyArg_ParseTuple(args, "s|IIIIIIIIII", &fmt,
+            &values[0], &values[1], &values[2], &values[3], &values[4],
+            &values[5], &values[6], &values[7], &values[8], &values[9]))
+    {
+        return NULL;
+    }
+    return Py_BuildValue(fmt,
+            values[0], values[1], values[2], values[3], values[4],
+            values[5], values[6], values[7], values[8], values[9]);
+}
+
 static int
 test_buildvalue_N_error(const char *fmt)
 {
@@ -563,6 +569,12 @@ static PyType_Spec HeapTypeNameType_Spec = {
     .slots = HeapTypeNameType_slots,
 };
 
+static PyObject *
+get_heaptype_for_name(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    return PyType_FromSpec(&HeapTypeNameType_Spec);
+}
+
 static PyObject *
 test_get_type_name(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
@@ -640,6 +652,30 @@ test_get_type_qualname(PyObject *self, PyObject *Py_UNUSED(ignored))
     Py_RETURN_NONE;
 }
 
+static PyObject *
+test_get_type_dict(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    /* Test for PyType_GetDict */
+
+    // Assert ints have a `to_bytes` method
+    PyObject *long_dict = PyType_GetDict(&PyLong_Type);
+    assert(long_dict);
+    assert(PyDict_GetItemString(long_dict, "to_bytes")); // borrowed ref
+    Py_DECREF(long_dict);
+
+    // Make a new type, add an attribute to it and assert it's there
+    PyObject *HeapTypeNameType = PyType_FromSpec(&HeapTypeNameType_Spec);
+    assert(HeapTypeNameType);
+    assert(PyObject_SetAttrString(
+        HeapTypeNameType, "new_attr", Py_NewRef(Py_None)) >= 0);
+    PyObject *type_dict = PyType_GetDict((PyTypeObject*)HeapTypeNameType);
+    assert(type_dict);
+    assert(PyDict_GetItemString(type_dict, "new_attr")); // borrowed ref
+    Py_DECREF(HeapTypeNameType);
+    Py_DECREF(type_dict);
+    Py_RETURN_NONE;
+}
+
 static PyObject *
 pyobject_repr_from_null(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
@@ -1269,9 +1305,15 @@ test_pep3118_obsolete_write_locks(PyObject* self, PyObject *Py_UNUSED(ignored))
     if (ret != -1 || match == 0)
         goto error;
 
+    PyObject *mod_io = PyImport_ImportModule("_io");
+    if (mod_io == NULL) {
+        return NULL;
+    }
+
     /* bytesiobuf_getbuffer() */
-    PyTypeObject *type = (PyTypeObject *)_PyImport_GetModuleAttrString(
-            "_io", "_BytesIOBuffer");
+    PyTypeObject *type = (PyTypeObject *)PyObject_GetAttrString(
+            mod_io, "_BytesIOBuffer");
+    Py_DECREF(mod_io);
     if (type == NULL) {
         return NULL;
     }
@@ -1314,19 +1356,13 @@ static PyObject *
 test_PyBuffer_SizeFromFormat(PyObject *self, PyObject *args)
 {
     const char *format;
-    Py_ssize_t result;
 
     if (!PyArg_ParseTuple(args, "s:test_PyBuffer_SizeFromFormat",
                           &format)) {
         return NULL;
     }
 
-    result = PyBuffer_SizeFromFormat(format);
-    if (result == -1) {
-        return NULL;
-    }
-
-    return PyLong_FromSsize_t(result);
+    RETURN_SIZE(PyBuffer_SizeFromFormat(format));
 }
 
 /* Test that the fatal error from not having a current thread doesn't
@@ -1415,156 +1451,6 @@ run_in_subinterp(PyObject *self, PyObject *args)
     return PyLong_FromLong(r);
 }
 
-/* To run some code in a sub-interpreter. */
-static PyObject *
-run_in_subinterp_with_config(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    const char *code;
-    int use_main_obmalloc = -1;
-    int allow_fork = -1;
-    int allow_exec = -1;
-    int allow_threads = -1;
-    int allow_daemon_threads = -1;
-    int check_multi_interp_extensions = -1;
-    int own_gil = -1;
-    int r;
-    PyThreadState *substate, *mainstate;
-    /* only initialise 'cflags.cf_flags' to test backwards compatibility */
-    PyCompilerFlags cflags = {0};
-
-    static char *kwlist[] = {"code",
-                             "use_main_obmalloc",
-                             "allow_fork",
-                             "allow_exec",
-                             "allow_threads",
-                             "allow_daemon_threads",
-                             "check_multi_interp_extensions",
-                             "own_gil",
-                             NULL};
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
-                    "s$ppppppp:run_in_subinterp_with_config", kwlist,
-                    &code, &use_main_obmalloc,
-                    &allow_fork, &allow_exec,
-                    &allow_threads, &allow_daemon_threads,
-                    &check_multi_interp_extensions,
-                    &own_gil)) {
-        return NULL;
-    }
-    if (use_main_obmalloc < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing use_main_obmalloc");
-        return NULL;
-    }
-    if (allow_fork < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing allow_fork");
-        return NULL;
-    }
-    if (allow_exec < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing allow_exec");
-        return NULL;
-    }
-    if (allow_threads < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing allow_threads");
-        return NULL;
-    }
-    if (own_gil < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing own_gil");
-        return NULL;
-    }
-    if (allow_daemon_threads < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing allow_daemon_threads");
-        return NULL;
-    }
-    if (check_multi_interp_extensions < 0) {
-        PyErr_SetString(PyExc_ValueError, "missing check_multi_interp_extensions");
-        return NULL;
-    }
-
-    mainstate = PyThreadState_Get();
-
-    PyThreadState_Swap(NULL);
-
-    const PyInterpreterConfig config = {
-        .use_main_obmalloc = use_main_obmalloc,
-        .allow_fork = allow_fork,
-        .allow_exec = allow_exec,
-        .allow_threads = allow_threads,
-        .allow_daemon_threads = allow_daemon_threads,
-        .check_multi_interp_extensions = check_multi_interp_extensions,
-        .own_gil = own_gil,
-    };
-    PyStatus status = Py_NewInterpreterFromConfig(&substate, &config);
-    if (PyStatus_Exception(status)) {
-        /* Since no new thread state was created, there is no exception to
-           propagate; raise a fresh one after swapping in the old thread
-           state. */
-        PyThreadState_Swap(mainstate);
-        _PyErr_SetFromPyStatus(status);
-        PyObject *exc = PyErr_GetRaisedException();
-        PyErr_SetString(PyExc_RuntimeError, "sub-interpreter creation failed");
-        _PyErr_ChainExceptions1(exc);
-        return NULL;
-    }
-    assert(substate != NULL);
-    r = PyRun_SimpleStringFlags(code, &cflags);
-    Py_EndInterpreter(substate);
-
-    PyThreadState_Swap(mainstate);
-
-    return PyLong_FromLong(r);
-}
-
-static void
-_xid_capsule_destructor(PyObject *capsule)
-{
-    _PyCrossInterpreterData *data = \
-            (_PyCrossInterpreterData *)PyCapsule_GetPointer(capsule, NULL);
-    if (data != NULL) {
-        assert(_PyCrossInterpreterData_Release(data) == 0);
-        PyMem_Free(data);
-    }
-}
-
-static PyObject *
-get_crossinterp_data(PyObject *self, PyObject *args)
-{
-    PyObject *obj = NULL;
-    if (!PyArg_ParseTuple(args, "O:get_crossinterp_data", &obj)) {
-        return NULL;
-    }
-
-    _PyCrossInterpreterData *data = PyMem_NEW(_PyCrossInterpreterData, 1);
-    if (data == NULL) {
-        PyErr_NoMemory();
-        return NULL;
-    }
-    if (_PyObject_GetCrossInterpreterData(obj, data) != 0) {
-        PyMem_Free(data);
-        return NULL;
-    }
-    PyObject *capsule = PyCapsule_New(data, NULL, _xid_capsule_destructor);
-    if (capsule == NULL) {
-        assert(_PyCrossInterpreterData_Release(data) == 0);
-        PyMem_Free(data);
-    }
-    return capsule;
-}
-
-static PyObject *
-restore_crossinterp_data(PyObject *self, PyObject *args)
-{
-    PyObject *capsule = NULL;
-    if (!PyArg_ParseTuple(args, "O:restore_crossinterp_data", &capsule)) {
-        return NULL;
-    }
-
-    _PyCrossInterpreterData *data = \
-            (_PyCrossInterpreterData *)PyCapsule_GetPointer(capsule, NULL);
-    if (data == NULL) {
-        return NULL;
-    }
-    return _PyCrossInterpreterData_NewObject(data);
-}
-
 static PyMethodDef ml;
 
 static PyObject *
@@ -1808,10 +1694,9 @@ pymarshal_write_long_to_file(PyObject* self, PyObject *args)
     }
 
     PyMarshal_WriteLongToFile(value, fp, version);
+    assert(!PyErr_Occurred());
 
     fclose(fp);
-    if (PyErr_Occurred())
-        return NULL;
     Py_RETURN_NONE;
 }
 
@@ -1834,10 +1719,9 @@ pymarshal_write_object_to_file(PyObject* self, PyObject *args)
     }
 
     PyMarshal_WriteObjectToFile(obj, fp, version);
+    assert(!PyErr_Occurred());
 
     fclose(fp);
-    if (PyErr_Occurred())
-        return NULL;
     Py_RETURN_NONE;
 }
 
@@ -1895,48 +1779,46 @@ pymarshal_read_long_from_file(PyObject* self, PyObject *args)
 static PyObject*
 pymarshal_read_last_object_from_file(PyObject* self, PyObject *args)
 {
-    PyObject *obj;
-    long pos;
     PyObject *filename;
-    FILE *fp;
-
     if (!PyArg_ParseTuple(args, "O:pymarshal_read_last_object_from_file", &filename))
         return NULL;
 
-    fp = _Py_fopen_obj(filename, "rb");
+    FILE *fp = _Py_fopen_obj(filename, "rb");
     if (fp == NULL) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
     }
 
-    obj = PyMarshal_ReadLastObjectFromFile(fp);
-    pos = ftell(fp);
+    PyObject *obj = PyMarshal_ReadLastObjectFromFile(fp);
+    long pos = ftell(fp);
 
     fclose(fp);
+    if (obj == NULL) {
+        return NULL;
+    }
     return Py_BuildValue("Nl", obj, pos);
 }
 
 static PyObject*
 pymarshal_read_object_from_file(PyObject* self, PyObject *args)
 {
-    PyObject *obj;
-    long pos;
     PyObject *filename;
-    FILE *fp;
-
     if (!PyArg_ParseTuple(args, "O:pymarshal_read_object_from_file", &filename))
         return NULL;
 
-    fp = _Py_fopen_obj(filename, "rb");
+    FILE *fp = _Py_fopen_obj(filename, "rb");
     if (fp == NULL) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
     }
 
-    obj = PyMarshal_ReadObjectFromFile(fp);
-    pos = ftell(fp);
+    PyObject *obj = PyMarshal_ReadObjectFromFile(fp);
+    long pos = ftell(fp);
 
     fclose(fp);
+    if (obj == NULL) {
+        return NULL;
+    }
     return Py_BuildValue("Nl", obj, pos);
 }
 
@@ -1958,7 +1840,7 @@ return_result_with_error(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
-static PyObject*
+static PyObject *
 getitem_with_error(PyObject *self, PyObject *args)
 {
     PyObject *map, *key;
@@ -2035,90 +1917,6 @@ py_w_stopcode(PyObject *self, PyObject *args)
 #endif
 
 
-static PyObject *
-get_mapping_keys(PyObject* self, PyObject *obj)
-{
-    return PyMapping_Keys(obj);
-}
-
-static PyObject *
-get_mapping_values(PyObject* self, PyObject *obj)
-{
-    return PyMapping_Values(obj);
-}
-
-static PyObject *
-get_mapping_items(PyObject* self, PyObject *obj)
-{
-    return PyMapping_Items(obj);
-}
-
-static PyObject *
-test_mapping_has_key_string(PyObject *self, PyObject *Py_UNUSED(args))
-{
-    PyObject *context = PyDict_New();
-    PyObject *val = PyLong_FromLong(1);
-
-    // Since this uses `const char*` it is easier to test this in C:
-    PyDict_SetItemString(context, "a", val);
-    if (!PyMapping_HasKeyString(context, "a")) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "Existing mapping key does not exist");
-        return NULL;
-    }
-    if (PyMapping_HasKeyString(context, "b")) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "Missing mapping key exists");
-        return NULL;
-    }
-
-    Py_DECREF(val);
-    Py_DECREF(context);
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-mapping_has_key(PyObject* self, PyObject *args)
-{
-    PyObject *context, *key;
-    if (!PyArg_ParseTuple(args, "OO", &context, &key)) {
-        return NULL;
-    }
-    return PyLong_FromLong(PyMapping_HasKey(context, key));
-}
-
-static PyObject *
-sequence_set_slice(PyObject* self, PyObject *args)
-{
-    PyObject *sequence, *obj;
-    Py_ssize_t i1, i2;
-    if (!PyArg_ParseTuple(args, "OnnO", &sequence, &i1, &i2, &obj)) {
-        return NULL;
-    }
-
-    int res = PySequence_SetSlice(sequence, i1, i2, obj);
-    if (res == -1) {
-        return NULL;
-    }
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-sequence_del_slice(PyObject* self, PyObject *args)
-{
-    PyObject *sequence;
-    Py_ssize_t i1, i2;
-    if (!PyArg_ParseTuple(args, "Onn", &sequence, &i1, &i2)) {
-        return NULL;
-    }
-
-    int res = PySequence_DelSlice(sequence, i1, i2);
-    if (res == -1) {
-        return NULL;
-    }
-    Py_RETURN_NONE;
-}
-
 static PyObject *
 test_pythread_tss_key_state(PyObject *self, PyObject *args)
 {
@@ -2174,22 +1972,15 @@ test_pythread_tss_key_state(PyObject *self, PyObject *args)
 }
 
 
-static PyObject*
-new_hamt(PyObject *self, PyObject *args)
-{
-    return _PyContext_NewHamtForTests();
-}
-
-
 /* def bad_get(self, obj, cls):
        cls()
        return repr(self)
 */
 static PyObject*
-bad_get(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+bad_get(PyObject *module, PyObject *args)
 {
     PyObject *self, *obj, *cls;
-    if (!_PyArg_UnpackStack(args, nargs, "bad_get", 3, 3, &self, &obj, &cls)) {
+    if (!PyArg_ParseTuple(args, "OOO", &self, &obj, &cls)) {
         return NULL;
     }
 
@@ -2219,73 +2010,27 @@ negative_refcount(PyObject *self, PyObject *Py_UNUSED(args))
 
     Py_RETURN_NONE;
 }
-#endif
-
 
 static PyObject *
-sequence_getitem(PyObject *self, PyObject *args)
+decref_freed_object(PyObject *self, PyObject *Py_UNUSED(args))
 {
-    PyObject *seq;
-    Py_ssize_t i;
-    if (!PyArg_ParseTuple(args, "On", &seq, &i)) {
+    PyObject *obj = PyUnicode_FromString("decref_freed_object");
+    if (obj == NULL) {
         return NULL;
     }
-    return PySequence_GetItem(seq, i);
-}
-
+    assert(Py_REFCNT(obj) == 1);
 
-static PyObject *
-sequence_setitem(PyObject *self, PyObject *args)
-{
-    Py_ssize_t i;
-    PyObject *seq, *val;
-    if (!PyArg_ParseTuple(args, "OnO", &seq, &i, &val)) {
-        return NULL;
-    }
-    if (PySequence_SetItem(seq, i, val)) {
-        return NULL;
-    }
-    Py_RETURN_NONE;
-}
+    // Deallocate the memory
+    Py_DECREF(obj);
+    // obj is a now a dangling pointer
 
+    // gh-109496: If Python is built in debug mode, Py_DECREF() must call
+    // _Py_NegativeRefcount() and abort Python.
+    Py_DECREF(obj);
 
-static PyObject *
-sequence_delitem(PyObject *self, PyObject *args)
-{
-    Py_ssize_t i;
-    PyObject *seq;
-    if (!PyArg_ParseTuple(args, "On", &seq, &i)) {
-        return NULL;
-    }
-    if (PySequence_DelItem(seq, i)) {
-        return NULL;
-    }
     Py_RETURN_NONE;
 }
-
-static PyObject *
-hasattr_string(PyObject *self, PyObject* args)
-{
-    PyObject* obj;
-    PyObject* attr_name;
-
-    if (!PyArg_UnpackTuple(args, "hasattr_string", 2, 2, &obj, &attr_name)) {
-        return NULL;
-    }
-
-    if (!PyUnicode_Check(attr_name)) {
-        PyErr_SetString(PyExc_TypeError, "attribute name must a be string");
-        return PyErr_Occurred();
-    }
-
-    const char *name_str = PyUnicode_AsUTF8(attr_name);
-    if (PyObject_HasAttrString(obj, name_str)) {
-        Py_RETURN_TRUE;
-    }
-    else {
-        Py_RETURN_FALSE;
-    }
-}
+#endif
 
 
 /* Functions for testing C calling conventions (METH_*) are named meth_*,
@@ -2366,6 +2111,19 @@ meth_fastcall_keywords(PyObject* self, PyObject* const* args,
     return Py_BuildValue("NNN", _null_to_none(self), pyargs, pykwargs);
 }
 
+static PyObject*
+test_pycfunction_call(PyObject *module, PyObject *args)
+{
+    // Function removed in the Python 3.13 API but was kept in the stable ABI.
+    extern PyObject* PyCFunction_Call(PyObject *callable, PyObject *args, PyObject *kwargs);
+
+    PyObject *func, *pos_args, *kwargs = NULL;
+    if (!PyArg_ParseTuple(args, "OO!|O!", &func, &PyTuple_Type, &pos_args, &PyDict_Type, &kwargs)) {
+        return NULL;
+    }
+    return PyCFunction_Call(func, pos_args, kwargs);
+}
+
 static PyObject*
 pynumber_tobase(PyObject *module, PyObject *args)
 {
@@ -2610,6 +2368,73 @@ type_assign_version(PyObject *self, PyObject *type)
 }
 
 
+static PyObject *
+type_get_tp_bases(PyObject *self, PyObject *type)
+{
+    PyObject *bases = ((PyTypeObject *)type)->tp_bases;
+    if (bases == NULL) {
+        Py_RETURN_NONE;
+    }
+    return Py_NewRef(bases);
+}
+
+static PyObject *
+type_get_tp_mro(PyObject *self, PyObject *type)
+{
+    PyObject *mro = ((PyTypeObject *)type)->tp_mro;
+    if (mro == NULL) {
+        Py_RETURN_NONE;
+    }
+    return Py_NewRef(mro);
+}
+
+
+/* We only use 2 in test_capi/test_misc.py. */
+#define NUM_BASIC_STATIC_TYPES 2
+static PyTypeObject BasicStaticTypes[NUM_BASIC_STATIC_TYPES] = {
+#define INIT_BASIC_STATIC_TYPE \
+    { \
+        PyVarObject_HEAD_INIT(NULL, 0) \
+        .tp_name = "BasicStaticType", \
+        .tp_basicsize = sizeof(PyObject), \
+    }
+    INIT_BASIC_STATIC_TYPE,
+    INIT_BASIC_STATIC_TYPE,
+#undef INIT_BASIC_STATIC_TYPE
+};
+static int num_basic_static_types_used = 0;
+
+static PyObject *
+get_basic_static_type(PyObject *self, PyObject *args)
+{
+    PyObject *base = NULL;
+    if (!PyArg_ParseTuple(args, "|O", &base)) {
+        return NULL;
+    }
+    assert(base == NULL || PyType_Check(base));
+
+    if(num_basic_static_types_used >= NUM_BASIC_STATIC_TYPES) {
+        PyErr_SetString(PyExc_RuntimeError, "no more available basic static types");
+        return NULL;
+    }
+    PyTypeObject *cls = &BasicStaticTypes[num_basic_static_types_used++];
+
+    if (base != NULL) {
+        cls->tp_bases = Py_BuildValue("(O)", base);
+        if (cls->tp_bases == NULL) {
+            return NULL;
+        }
+        cls->tp_base = (PyTypeObject *)Py_NewRef(base);
+    }
+    if (PyType_Ready(cls) < 0) {
+        Py_DECREF(cls->tp_bases);
+        Py_DECREF(cls->tp_base);
+        return NULL;
+    }
+    return (PyObject *)cls;
+}
+
+
 // Test PyThreadState C API
 static PyObject *
 test_tstate_capi(PyObject *self, PyObject *Py_UNUSED(args))
@@ -2622,8 +2447,8 @@ test_tstate_capi(PyObject *self, PyObject *Py_UNUSED(args))
     PyThreadState *tstate2 = PyThreadState_Get();
     assert(tstate2 == tstate);
 
-    // private _PyThreadState_UncheckedGet()
-    PyThreadState *tstate3 = _PyThreadState_UncheckedGet();
+    // PyThreadState_GetUnchecked()
+    PyThreadState *tstate3 = PyThreadState_GetUnchecked();
     assert(tstate3 == tstate);
 
     // PyThreadState_EnterTracing(), PyThreadState_LeaveTracing()
@@ -2638,11 +2463,6 @@ test_tstate_capi(PyObject *self, PyObject *Py_UNUSED(args))
     assert(PyDict_Check(dict));
     // dict is a borrowed reference
 
-    // private _PyThreadState_GetDict()
-    PyObject *dict2 = _PyThreadState_GetDict(tstate);
-    assert(dict2 == dict);
-    // dict2 is a borrowed reference
-
     // PyThreadState_GetInterpreter()
     PyInterpreterState *interp = PyThreadState_GetInterpreter(tstate);
     assert(interp != NULL);
@@ -3062,10 +2882,37 @@ settrace_to_record(PyObject *self, PyObject *list)
     Py_RETURN_NONE;
 }
 
+static int
+error_func(PyObject *obj, PyFrameObject *f, int what, PyObject *arg)
+{
+    assert(PyList_Check(obj));
+    /* Only raise if list is empty, otherwise append None
+     * This ensures that we only raise once */
+    if (PyList_GET_SIZE(obj)) {
+        return 0;
+    }
+    if (PyList_Append(obj, Py_None)) {
+       return -1;
+    }
+    PyErr_SetString(PyExc_Exception, "an exception");
+    return -1;
+}
+
+static PyObject *
+settrace_to_error(PyObject *self, PyObject *list)
+{
+    if (!PyList_Check(list)) {
+        PyErr_SetString(PyExc_TypeError, "argument must be a list");
+        return NULL;
+    }
+    PyEval_SetTrace(error_func, list);
+    Py_RETURN_NONE;
+}
+
 static PyObject *
 clear_managed_dict(PyObject *self, PyObject *obj)
 {
-    _PyObject_ClearManagedDict(obj);
+    PyObject_ClearManagedDict(obj);
     Py_RETURN_NONE;
 }
 
@@ -3191,38 +3038,152 @@ function_set_kw_defaults(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
-struct atexit_data {
-    int called;
-};
-
-static void
-callback(void *data)
+static PyObject *
+check_pyimport_addmodule(PyObject *self, PyObject *args)
 {
-    ((struct atexit_data *)data)->called += 1;
+    const char *name;
+    if (!PyArg_ParseTuple(args, "s", &name)) {
+        return NULL;
+    }
+
+    // test PyImport_AddModuleRef()
+    PyObject *module = PyImport_AddModuleRef(name);
+    if (module == NULL) {
+        return NULL;
+    }
+    assert(PyModule_Check(module));
+    // module is a strong reference
+
+    // test PyImport_AddModule()
+    PyObject *module2 = PyImport_AddModule(name);
+    if (module2 == NULL) {
+        goto error;
+    }
+    assert(PyModule_Check(module2));
+    assert(module2 == module);
+    // module2 is a borrowed ref
+
+    // test PyImport_AddModuleObject()
+    PyObject *name_obj = PyUnicode_FromString(name);
+    if (name_obj == NULL) {
+        goto error;
+    }
+    PyObject *module3 = PyImport_AddModuleObject(name_obj);
+    Py_DECREF(name_obj);
+    if (module3 == NULL) {
+        goto error;
+    }
+    assert(PyModule_Check(module3));
+    assert(module3 == module);
+    // module3 is a borrowed ref
+
+    return module;
+
+error:
+    Py_DECREF(module);
+    return NULL;
 }
 
+
 static PyObject *
-test_atexit(PyObject *self, PyObject *Py_UNUSED(args))
+test_weakref_capi(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
 {
-    PyThreadState *oldts = PyThreadState_Swap(NULL);
-    PyThreadState *tstate = Py_NewInterpreter();
+    // Ignore PyWeakref_GetObject() deprecation, we test it on purpose
+    _Py_COMP_DIAG_PUSH
+    _Py_COMP_DIAG_IGNORE_DEPR_DECLS
 
-    struct atexit_data data = {0};
-    int res = _Py_AtExit(tstate->interp, callback, (void *)&data);
-    Py_EndInterpreter(tstate);
-    PyThreadState_Swap(oldts);
-    if (res < 0) {
+    // Create a new heap type, create an instance of this type, and delete the
+    // type. This object supports weak references.
+    PyObject *new_type = PyObject_CallFunction((PyObject*)&PyType_Type,
+                                               "s(){}", "TypeName");
+    if (new_type == NULL) {
         return NULL;
     }
-    if (data.called == 0) {
-        PyErr_SetString(PyExc_RuntimeError, "atexit callback not called");
+    PyObject *obj = PyObject_CallNoArgs(new_type);
+    Py_DECREF(new_type);
+    if (obj == NULL) {
+        return NULL;
+    }
+    Py_ssize_t refcnt = Py_REFCNT(obj);
+
+    // test PyWeakref_NewRef(), reference is alive
+    PyObject *weakref = PyWeakref_NewRef(obj, NULL);
+    if (weakref == NULL) {
+        Py_DECREF(obj);
         return NULL;
     }
+
+    // test PyWeakref_Check(), valid weakref object
+    assert(PyWeakref_Check(weakref));
+    assert(PyWeakref_CheckRefExact(weakref));
+    assert(PyWeakref_CheckRefExact(weakref));
+    assert(Py_REFCNT(obj) == refcnt);
+
+    // test PyWeakref_GetRef(), reference is alive
+    PyObject *ref = UNINITIALIZED_PTR;
+    assert(PyWeakref_GetRef(weakref, &ref) == 1);
+    assert(ref == obj);
+    assert(Py_REFCNT(obj) == (refcnt + 1));
+    Py_DECREF(ref);
+
+    // test PyWeakref_GetObject(), reference is alive
+    ref = PyWeakref_GetObject(weakref);  // borrowed ref
+    assert(ref == obj);
+
+    // test PyWeakref_GET_OBJECT(), reference is alive
+    ref = PyWeakref_GET_OBJECT(weakref);  // borrowed ref
+    assert(ref == obj);
+
+    // delete the referenced object: clear the weakref
+    assert(Py_REFCNT(obj) == 1);
+    Py_DECREF(obj);
+
+    // test PyWeakref_GET_OBJECT(), reference is dead
+    assert(PyWeakref_GET_OBJECT(weakref) == Py_None);
+
+    // test PyWeakref_GetRef(), reference is dead
+    ref = UNINITIALIZED_PTR;
+    assert(PyWeakref_GetRef(weakref, &ref) == 0);
+    assert(ref == NULL);
+
+    // test PyWeakref_Check(), not a weakref object
+    PyObject *invalid_weakref = Py_None;
+    assert(!PyWeakref_Check(invalid_weakref));
+    assert(!PyWeakref_CheckRefExact(invalid_weakref));
+    assert(!PyWeakref_CheckRefExact(invalid_weakref));
+
+    // test PyWeakref_GetRef(), invalid type
+    assert(!PyErr_Occurred());
+    ref = UNINITIALIZED_PTR;
+    assert(PyWeakref_GetRef(invalid_weakref, &ref) == -1);
+    assert(PyErr_ExceptionMatches(PyExc_TypeError));
+    PyErr_Clear();
+    assert(ref == NULL);
+
+    // test PyWeakref_GetObject(), invalid type
+    assert(PyWeakref_GetObject(invalid_weakref) == NULL);
+    assert(PyErr_ExceptionMatches(PyExc_SystemError));
+    PyErr_Clear();
+
+    // test PyWeakref_GetRef(NULL)
+    ref = UNINITIALIZED_PTR;
+    assert(PyWeakref_GetRef(NULL, &ref) == -1);
+    assert(PyErr_ExceptionMatches(PyExc_SystemError));
+    assert(ref == NULL);
+    PyErr_Clear();
+
+    // test PyWeakref_GetObject(NULL)
+    assert(PyWeakref_GetObject(NULL) == NULL);
+    assert(PyErr_ExceptionMatches(PyExc_SystemError));
+    PyErr_Clear();
+
+    Py_DECREF(weakref);
+
     Py_RETURN_NONE;
-}
 
+    _Py_COMP_DIAG_POP
+}
 
-static PyObject *test_buildvalue_issue38913(PyObject *, PyObject *);
 
 static PyMethodDef TestMethods[] = {
     {"set_errno",               set_errno,                       METH_VARARGS},
@@ -3230,7 +3191,6 @@ static PyMethodDef TestMethods[] = {
     {"test_sizeof_c_types",     test_sizeof_c_types,             METH_NOARGS},
     {"test_list_api",           test_list_api,                   METH_NOARGS},
     {"test_dict_iteration",     test_dict_iteration,             METH_NOARGS},
-    {"dict_getitem_knownhash",  dict_getitem_knownhash,          METH_VARARGS},
     {"test_lazy_hash_inheritance",      test_lazy_hash_inheritance,METH_NOARGS},
     {"test_xincref_doesnt_leak",test_xincref_doesnt_leak,        METH_NOARGS},
     {"test_incref_doesnt_leak", test_incref_doesnt_leak,         METH_NOARGS},
@@ -3252,11 +3212,14 @@ static PyMethodDef TestMethods[] = {
 #endif
     {"getbuffer_with_null_view", getbuffer_with_null_view,       METH_O},
     {"PyBuffer_SizeFromFormat",  test_PyBuffer_SizeFromFormat,   METH_VARARGS},
+    {"py_buildvalue",            py_buildvalue,                  METH_VARARGS},
+    {"py_buildvalue_ints",       py_buildvalue_ints,             METH_VARARGS},
     {"test_buildvalue_N",        test_buildvalue_N,              METH_NOARGS},
-    {"test_buildvalue_issue38913", test_buildvalue_issue38913,   METH_NOARGS},
     {"test_get_statictype_slots", test_get_statictype_slots,     METH_NOARGS},
+    {"get_heaptype_for_name",     get_heaptype_for_name,         METH_NOARGS},
     {"test_get_type_name",        test_get_type_name,            METH_NOARGS},
     {"test_get_type_qualname",    test_get_type_qualname,        METH_NOARGS},
+    {"test_get_type_dict",        test_get_type_dict,            METH_NOARGS},
     {"_test_thread_state",      test_thread_state,               METH_VARARGS},
 #ifndef MS_WINDOWS
     {"_spawn_pthread_waiter",   spawn_pthread_waiter,            METH_NOARGS},
@@ -3274,11 +3237,6 @@ static PyMethodDef TestMethods[] = {
     {"crash_no_current_thread", crash_no_current_thread,         METH_NOARGS},
     {"test_current_tstate_matches", test_current_tstate_matches, METH_NOARGS},
     {"run_in_subinterp",        run_in_subinterp,                METH_VARARGS},
-    {"run_in_subinterp_with_config",
-     _PyCFunction_CAST(run_in_subinterp_with_config),
-     METH_VARARGS | METH_KEYWORDS},
-    {"get_crossinterp_data",    get_crossinterp_data,            METH_VARARGS},
-    {"restore_crossinterp_data", restore_crossinterp_data,       METH_VARARGS},
     {"create_cfunction",        create_cfunction,                METH_NOARGS},
     {"call_in_temporary_c_thread", call_in_temporary_c_thread, METH_VARARGS,
      PyDoc_STR("set_error_class(error_class) -> None")},
@@ -3305,29 +3263,19 @@ static PyMethodDef TestMethods[] = {
 #ifdef W_STOPCODE
     {"W_STOPCODE", py_w_stopcode, METH_VARARGS},
 #endif
-    {"get_mapping_keys", get_mapping_keys, METH_O},
-    {"get_mapping_values", get_mapping_values, METH_O},
-    {"get_mapping_items", get_mapping_items, METH_O},
-    {"test_mapping_has_key_string", test_mapping_has_key_string, METH_NOARGS},
-    {"mapping_has_key", mapping_has_key, METH_VARARGS},
-    {"sequence_set_slice", sequence_set_slice, METH_VARARGS},
-    {"sequence_del_slice", sequence_del_slice, METH_VARARGS},
     {"test_pythread_tss_key_state", test_pythread_tss_key_state, METH_VARARGS},
-    {"hamt", new_hamt, METH_NOARGS},
-    {"bad_get", _PyCFunction_CAST(bad_get), METH_FASTCALL},
+    {"bad_get", bad_get, METH_VARARGS},
 #ifdef Py_REF_DEBUG
     {"negative_refcount", negative_refcount, METH_NOARGS},
+    {"decref_freed_object", decref_freed_object, METH_NOARGS},
 #endif
-    {"sequence_getitem", sequence_getitem, METH_VARARGS},
-    {"sequence_setitem", sequence_setitem, METH_VARARGS},
-    {"sequence_delitem", sequence_delitem, METH_VARARGS},
-    {"hasattr_string", hasattr_string, METH_VARARGS},
     {"meth_varargs", meth_varargs, METH_VARARGS},
     {"meth_varargs_keywords", _PyCFunction_CAST(meth_varargs_keywords), METH_VARARGS|METH_KEYWORDS},
     {"meth_o", meth_o, METH_O},
     {"meth_noargs", meth_noargs, METH_NOARGS},
     {"meth_fastcall", _PyCFunction_CAST(meth_fastcall), METH_FASTCALL},
     {"meth_fastcall_keywords", _PyCFunction_CAST(meth_fastcall_keywords), METH_FASTCALL|METH_KEYWORDS},
+    {"pycfunction_call", test_pycfunction_call, METH_VARARGS},
     {"pynumber_tobase", pynumber_tobase, METH_VARARGS},
     {"test_set_type_size", test_set_type_size, METH_NOARGS},
     {"test_py_clear", test_py_clear, METH_NOARGS},
@@ -3338,6 +3286,9 @@ static PyMethodDef TestMethods[] = {
     {"test_py_is_funcs", test_py_is_funcs, METH_NOARGS},
     {"type_get_version", type_get_version, METH_O, PyDoc_STR("type->tp_version_tag")},
     {"type_assign_version", type_assign_version, METH_O, PyDoc_STR("PyUnstable_Type_AssignVersionTag")},
+    {"type_get_tp_bases", type_get_tp_bases, METH_O},
+    {"type_get_tp_mro", type_get_tp_mro, METH_O},
+    {"get_basic_static_type", get_basic_static_type, METH_VARARGS, NULL},
     {"test_tstate_capi", test_tstate_capi, METH_NOARGS, NULL},
     {"frame_getlocals", frame_getlocals, METH_O, NULL},
     {"frame_getglobals", frame_getglobals, METH_O, NULL},
@@ -3352,6 +3303,7 @@ static PyMethodDef TestMethods[] = {
     {"gen_get_code", gen_get_code, METH_O, NULL},
     {"get_feature_macros", get_feature_macros, METH_NOARGS, NULL},
     {"test_code_api", test_code_api, METH_NOARGS, NULL},
+    {"settrace_to_error", settrace_to_error, METH_O, NULL},
     {"settrace_to_record", settrace_to_record, METH_O, NULL},
     {"test_macros", test_macros, METH_NOARGS, NULL},
     {"clear_managed_dict", clear_managed_dict, METH_O, NULL},
@@ -3362,7 +3314,8 @@ static PyMethodDef TestMethods[] = {
     {"function_set_defaults", function_set_defaults, METH_VARARGS, NULL},
     {"function_get_kw_defaults", function_get_kw_defaults, METH_O, NULL},
     {"function_set_kw_defaults", function_set_kw_defaults, METH_VARARGS, NULL},
-    {"test_atexit", test_atexit, METH_NOARGS},
+    {"check_pyimport_addmodule", check_pyimport_addmodule, METH_VARARGS},
+    {"test_weakref_capi", test_weakref_capi, METH_NOARGS},
     {NULL, NULL} /* sentinel */
 };
 
@@ -3820,7 +3773,7 @@ ContainerNoGC_dealloc(ContainerNoGCobject *self)
 }
 
 static PyMemberDef ContainerNoGC_members[] = {
-    {"value", T_OBJECT, offsetof(ContainerNoGCobject, value), READONLY,
+    {"value", _Py_T_OBJECT, offsetof(ContainerNoGCobject, value), Py_READONLY,
      PyDoc_STR("a container value for test purposes")},
     {0}
 };
@@ -3929,13 +3882,16 @@ PyInit__testcapi(void)
     PyModule_AddObject(m, "ULLONG_MAX", PyLong_FromUnsignedLongLong(ULLONG_MAX));
     PyModule_AddObject(m, "PY_SSIZE_T_MAX", PyLong_FromSsize_t(PY_SSIZE_T_MAX));
     PyModule_AddObject(m, "PY_SSIZE_T_MIN", PyLong_FromSsize_t(PY_SSIZE_T_MIN));
+    PyModule_AddObject(m, "SIZE_MAX", PyLong_FromSize_t(SIZE_MAX));
     PyModule_AddObject(m, "SIZEOF_WCHAR_T", PyLong_FromSsize_t(sizeof(wchar_t)));
+    PyModule_AddObject(m, "SIZEOF_VOID_P", PyLong_FromSsize_t(sizeof(void*)));
     PyModule_AddObject(m, "SIZEOF_TIME_T", PyLong_FromSsize_t(sizeof(time_t)));
     PyModule_AddObject(m, "Py_Version", PyLong_FromUnsignedLong(Py_Version));
     Py_INCREF(&PyInstanceMethod_Type);
     PyModule_AddObject(m, "instancemethod", (PyObject *)&PyInstanceMethod_Type);
 
     PyModule_AddIntConstant(m, "the_number_three", 3);
+    PyModule_AddIntMacro(m, Py_C_RECURSION_LIMIT);
 
     TestError = PyErr_NewException("_testcapi.error", NULL, NULL);
     Py_INCREF(TestError);
@@ -3956,13 +3912,19 @@ PyInit__testcapi(void)
     if (_PyTestCapi_Init_Heaptype(m) < 0) {
         return NULL;
     }
-    if (_PyTestCapi_Init_Unicode(m) < 0) {
+    if (_PyTestCapi_Init_Abstract(m) < 0) {
         return NULL;
     }
-    if (_PyTestCapi_Init_GetArgs(m) < 0) {
+    if (_PyTestCapi_Init_ByteArray(m) < 0) {
         return NULL;
     }
-    if (_PyTestCapi_Init_PyTime(m) < 0) {
+    if (_PyTestCapi_Init_Bytes(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_Unicode(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_GetArgs(m) < 0) {
         return NULL;
     }
     if (_PyTestCapi_Init_DateTime(m) < 0) {
@@ -3983,6 +3945,24 @@ PyInit__testcapi(void)
     if (_PyTestCapi_Init_Float(m) < 0) {
         return NULL;
     }
+    if (_PyTestCapi_Init_Complex(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_Numbers(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_Dict(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_Set(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_List(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_Tuple(m) < 0) {
+        return NULL;
+    }
     if (_PyTestCapi_Init_Structmember(m) < 0) {
         return NULL;
     }
@@ -3998,69 +3978,34 @@ PyInit__testcapi(void)
     if (_PyTestCapi_Init_PyOS(m) < 0) {
         return NULL;
     }
-    if (_PyTestCapi_Init_Immortal(m) < 0) {
+    if (_PyTestCapi_Init_File(m) < 0) {
         return NULL;
     }
-    if (_PyTestCapi_Init_GC(m) < 0) {
+    if (_PyTestCapi_Init_Codec(m) < 0) {
         return NULL;
     }
-
-#ifndef LIMITED_API_AVAILABLE
-    PyModule_AddObjectRef(m, "LIMITED_API_AVAILABLE", Py_False);
-#else
-    PyModule_AddObjectRef(m, "LIMITED_API_AVAILABLE", Py_True);
-    if (_PyTestCapi_Init_VectorcallLimited(m) < 0) {
+    if (_PyTestCapi_Init_Sys(m) < 0) {
         return NULL;
     }
-    if (_PyTestCapi_Init_HeaptypeRelative(m) < 0) {
+    if (_PyTestCapi_Init_Immortal(m) < 0) {
         return NULL;
     }
-#endif
-
-    PyState_AddModule(m, &_testcapimodule);
-    return m;
-}
-
-/* Test the C API exposed when PY_SSIZE_T_CLEAN is not defined */
-
-#undef Py_BuildValue
-PyAPI_FUNC(PyObject *) Py_BuildValue(const char *, ...);
-
-static PyObject *
-test_buildvalue_issue38913(PyObject *self, PyObject *Py_UNUSED(ignored))
-{
-    PyObject *res;
-    const char str[] = "string";
-    const Py_UNICODE unicode[] = L"unicode";
-    assert(!PyErr_Occurred());
-
-    res = Py_BuildValue("(s#O)", str, 1, Py_None);
-    assert(res == NULL);
-    if (!PyErr_ExceptionMatches(PyExc_SystemError)) {
+    if (_PyTestCapi_Init_GC(m) < 0) {
         return NULL;
     }
-    PyErr_Clear();
-
-    res = Py_BuildValue("(z#O)", str, 1, Py_None);
-    assert(res == NULL);
-    if (!PyErr_ExceptionMatches(PyExc_SystemError)) {
+    if (_PyTestCapi_Init_PyAtomic(m) < 0) {
         return NULL;
     }
-    PyErr_Clear();
-
-    res = Py_BuildValue("(y#O)", str, 1, Py_None);
-    assert(res == NULL);
-    if (!PyErr_ExceptionMatches(PyExc_SystemError)) {
+    if (_PyTestCapi_Init_VectorcallLimited(m) < 0) {
         return NULL;
     }
-    PyErr_Clear();
-
-    res = Py_BuildValue("(u#O)", unicode, 1, Py_None);
-    assert(res == NULL);
-    if (!PyErr_ExceptionMatches(PyExc_SystemError)) {
+    if (_PyTestCapi_Init_HeaptypeRelative(m) < 0) {
+        return NULL;
+    }
+    if (_PyTestCapi_Init_Hash(m) < 0) {
         return NULL;
     }
-    PyErr_Clear();
 
-    Py_RETURN_NONE;
+    PyState_AddModule(m, &_testcapimodule);
+    return m;
 }
diff --git a/Modules/_testclinic.c b/Modules/_testclinic.c
index 6ff55a2755cf5a..15e0093f15ba1e 100644
--- a/Modules/_testclinic.c
+++ b/Modules/_testclinic.c
@@ -5,9 +5,8 @@
 /* Always enable assertions */
 #undef NDEBUG
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
+#include "pycore_object.h"        // _PyObject_IsFreed()
 
 
 // Used for clone_with_conv_f1 and clone_with_conv_v2
@@ -1129,6 +1128,26 @@ gh_99240_double_free_impl(PyObject *module, char *a, char *b)
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+null_or_tuple_for_varargs
+
+    name: object
+    *constraints: object
+    covariant: bool = False
+
+See https://github.com/python/cpython/issues/110864
+[clinic start generated code]*/
+
+static PyObject *
+null_or_tuple_for_varargs_impl(PyObject *module, PyObject *name,
+                               PyObject *constraints, int covariant)
+/*[clinic end generated code: output=a785b35421358983 input=c9bce186637956b3]*/
+{
+    assert(name != NULL);
+    assert(constraints != NULL);
+    PyObject *c = covariant ? Py_True : Py_False;
+    return pack_arguments_newref(3, name, constraints, c);
+}
 
 /*[clinic input]
 _testclinic.clone_f1 as clone_f1
@@ -1194,6 +1213,605 @@ clone_with_conv_f2_impl(PyObject *module, custom_t path)
 }
 
 
+/*[clinic input]
+output push
+destination deprstar new file '{dirname}/clinic/_testclinic_depr.c.h'
+output everything deprstar
+#output methoddef_ifndef buffer 1
+output docstring_prototype suppress
+output parser_prototype suppress
+output impl_definition block
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=32116eac48a42d34]*/
+
+
+// Mock Python version 3.8
+#define _SAVED_PY_VERSION PY_VERSION_HEX
+#undef PY_VERSION_HEX
+#define PY_VERSION_HEX 0x03080000
+
+
+#include "clinic/_testclinic_depr.c.h"
+
+
+/*[clinic input]
+class _testclinic.DeprStarNew "PyObject *" "PyObject"
+@classmethod
+_testclinic.DeprStarNew.__new__ as depr_star_new
+    * [from 3.14]
+    a: object = None
+The deprecation message should use the class name instead of __new__.
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_new_impl(PyTypeObject *type, PyObject *a)
+/*[clinic end generated code: output=bdbb36244f90cf46 input=fdd640db964b4dc1]*/
+{
+    return type->tp_alloc(type, 0);
+}
+
+/*[clinic input]
+_testclinic.DeprStarNew.cloned as depr_star_new_clone = _testclinic.DeprStarNew.__new__
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_new_clone_impl(PyObject *type, PyObject *a)
+/*[clinic end generated code: output=3b17bf885fa736bc input=ea659285d5dbec6c]*/
+{
+    Py_RETURN_NONE;
+}
+
+static struct PyMethodDef depr_star_new_methods[] = {
+    DEPR_STAR_NEW_CLONE_METHODDEF
+    {NULL, NULL}
+};
+
+static PyTypeObject DeprStarNew = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.DeprStarNew",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_new = depr_star_new,
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+    .tp_methods = depr_star_new_methods,
+};
+
+
+/*[clinic input]
+class _testclinic.DeprStarInit "PyObject *" "PyObject"
+_testclinic.DeprStarInit.__init__ as depr_star_init
+    * [from 3.14]
+    a: object = None
+The deprecation message should use the class name instead of __init__.
+[clinic start generated code]*/
+
+static int
+depr_star_init_impl(PyObject *self, PyObject *a)
+/*[clinic end generated code: output=8d27b43c286d3ecc input=5575b77229d5e2be]*/
+{
+    return 0;
+}
+
+/*[clinic input]
+_testclinic.DeprStarInit.cloned as depr_star_init_clone = _testclinic.DeprStarInit.__init__
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_init_clone_impl(PyObject *self, PyObject *a)
+/*[clinic end generated code: output=ddfe8a1b5531e7cc input=561e103fe7f8e94f]*/
+{
+    Py_RETURN_NONE;
+}
+
+static struct PyMethodDef depr_star_init_methods[] = {
+    DEPR_STAR_INIT_CLONE_METHODDEF
+    {NULL, NULL}
+};
+
+static PyTypeObject DeprStarInit = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.DeprStarInit",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_new = PyType_GenericNew,
+    .tp_init = depr_star_init,
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+    .tp_methods = depr_star_init_methods,
+};
+
+
+/*[clinic input]
+class _testclinic.DeprStarInitNoInline "PyObject *" "PyObject"
+_testclinic.DeprStarInitNoInline.__init__ as depr_star_init_noinline
+    a: object
+    * [from 3.14]
+    b: object
+    c: object = None
+    *
+    # Force to use _PyArg_ParseTupleAndKeywordsFast.
+    d: str(accept={str, robuffer}, zeroes=True) = ''
+[clinic start generated code]*/
+
+static int
+depr_star_init_noinline_impl(PyObject *self, PyObject *a, PyObject *b,
+                             PyObject *c, const char *d, Py_ssize_t d_length)
+/*[clinic end generated code: output=9b31fc167f1bf9f7 input=5a887543122bca48]*/
+{
+    return 0;
+}
+
+static PyTypeObject DeprStarInitNoInline = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.DeprStarInitNoInline",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_new = PyType_GenericNew,
+    .tp_init = depr_star_init_noinline,
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+};
+
+
+/*[clinic input]
+class _testclinic.DeprKwdNew "PyObject *" "PyObject"
+@classmethod
+_testclinic.DeprKwdNew.__new__ as depr_kwd_new
+    a: object = None
+    / [from 3.14]
+The deprecation message should use the class name instead of __new__.
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_new_impl(PyTypeObject *type, PyObject *a)
+/*[clinic end generated code: output=618d07afc5616149 input=6c7d13c471013c10]*/
+{
+    return type->tp_alloc(type, 0);
+}
+
+static PyTypeObject DeprKwdNew = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.DeprKwdNew",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_new = depr_kwd_new,
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+};
+
+
+/*[clinic input]
+class _testclinic.DeprKwdInit "PyObject *" "PyObject"
+_testclinic.DeprKwdInit.__init__ as depr_kwd_init
+    a: object = None
+    / [from 3.14]
+The deprecation message should use the class name instead of __init__.
+[clinic start generated code]*/
+
+static int
+depr_kwd_init_impl(PyObject *self, PyObject *a)
+/*[clinic end generated code: output=6e02eb724a85d840 input=b9bf3c20f012d539]*/
+{
+    return 0;
+}
+
+static PyTypeObject DeprKwdInit = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.DeprKwdInit",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_new = PyType_GenericNew,
+    .tp_init = depr_kwd_init,
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+};
+
+
+/*[clinic input]
+class _testclinic.DeprKwdInitNoInline "PyObject *" "PyObject"
+_testclinic.DeprKwdInitNoInline.__init__ as depr_kwd_init_noinline
+    a: object
+    /
+    b: object
+    c: object = None
+    / [from 3.14]
+    # Force to use _PyArg_ParseTupleAndKeywordsFast.
+    d: str(accept={str, robuffer}, zeroes=True) = ''
+[clinic start generated code]*/
+
+static int
+depr_kwd_init_noinline_impl(PyObject *self, PyObject *a, PyObject *b,
+                            PyObject *c, const char *d, Py_ssize_t d_length)
+/*[clinic end generated code: output=27759d70ddd25873 input=c19d982c8c70a930]*/
+{
+    return 0;
+}
+
+static PyTypeObject DeprKwdInitNoInline = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "_testclinic.DeprKwdInitNoInline",
+    .tp_basicsize = sizeof(PyObject),
+    .tp_new = PyType_GenericNew,
+    .tp_init = depr_kwd_init_noinline,
+    .tp_flags = Py_TPFLAGS_DEFAULT,
+};
+
+
+/*[clinic input]
+depr_star_pos0_len1
+    * [from 3.14]
+    a: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos0_len1_impl(PyObject *module, PyObject *a)
+/*[clinic end generated code: output=e1c6c2b423129499 input=089b9aee25381b69]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos0_len2
+    * [from 3.14]
+    a: object
+    b: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos0_len2_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=96df9be39859c7e4 input=65c83a32e01495c6]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos0_len3_with_kwd
+    * [from 3.14]
+    a: object
+    b: object
+    c: object
+    *
+    d: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos0_len3_with_kwd_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c, PyObject *d)
+/*[clinic end generated code: output=7f2531eda837052f input=b33f620f57d9270f]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos1_len1_opt
+    a: object
+    * [from 3.14]
+    b: object = None
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos1_len1_opt_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=b5b4e326ee3b216f input=4a4b8ff72eae9ff7]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos1_len1
+    a: object
+    * [from 3.14]
+    b: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos1_len1_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=eab92e37d5b0a480 input=1e7787a9fe5f62a0]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos1_len2_with_kwd
+    a: object
+    * [from 3.14]
+    b: object
+    c: object
+    *
+    d: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos1_len2_with_kwd_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c, PyObject *d)
+/*[clinic end generated code: output=3bccab672b7cfbb8 input=6bc7bd742fa8be15]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos2_len1
+    a: object
+    b: object
+    * [from 3.14]
+    c: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos2_len1_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c)
+/*[clinic end generated code: output=20f5b230e9beeb70 input=5fc3e1790dec00d5]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos2_len2
+    a: object
+    b: object
+    * [from 3.14]
+    c: object
+    d: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos2_len2_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c, PyObject *d)
+/*[clinic end generated code: output=9f90ed8fbce27d7a input=9cc8003b89d38779]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_pos2_len2_with_kwd
+    a: object
+    b: object
+    * [from 3.14]
+    c: object
+    d: object
+    *
+    e: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_pos2_len2_with_kwd_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c, PyObject *d, PyObject *e)
+/*[clinic end generated code: output=05432c4f20527215 input=831832d90534da91]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_noinline
+    a: object
+    * [from 3.14]
+    b: object
+    c: object = None
+    *
+    # Force to use _PyArg_ParseStackAndKeywords.
+    d: str(accept={str, robuffer}, zeroes=True) = ''
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_noinline_impl(PyObject *module, PyObject *a, PyObject *b,
+                        PyObject *c, const char *d, Py_ssize_t d_length)
+/*[clinic end generated code: output=cc27dacf5c2754af input=d36cc862a2daef98]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_star_multi
+    a: object
+    * [from 3.16]
+    b: object
+    * [from 3.15]
+    c: object
+    d: object
+    * [from 3.14]
+    e: object
+    f: object
+    g: object
+    *
+    h: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_star_multi_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+                     PyObject *d, PyObject *e, PyObject *f, PyObject *g,
+                     PyObject *h)
+/*[clinic end generated code: output=77681653f4202068 input=3ebd05d888a957ea]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_required_1
+    a: object
+    /
+    b: object
+    / [from 3.14]
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_required_1_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=1d8ab19ea78418af input=53f2c398b828462d]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_required_2
+    a: object
+    /
+    b: object
+    c: object
+    / [from 3.14]
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_required_2_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c)
+/*[clinic end generated code: output=44a89cb82509ddde input=a2b0ef37de8a01a7]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_optional_1
+    a: object
+    /
+    b: object = None
+    / [from 3.14]
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_optional_1_impl(PyObject *module, PyObject *a, PyObject *b)
+/*[clinic end generated code: output=a8a3d67efcc7b058 input=e416981eb78c3053]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_optional_2
+    a: object
+    /
+    b: object = None
+    c: object = None
+    / [from 3.14]
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_optional_2_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c)
+/*[clinic end generated code: output=aa2d967f26fdb9f6 input=cae3afb783bfc855]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_optional_3
+    a: object = None
+    b: object = None
+    c: object = None
+    / [from 3.14]
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_optional_3_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c)
+/*[clinic end generated code: output=a26025bf6118fd07 input=c9183b2f9ccaf992]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_required_optional
+    a: object
+    /
+    b: object
+    c: object = None
+    / [from 3.14]
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_required_optional_impl(PyObject *module, PyObject *a, PyObject *b,
+                                PyObject *c)
+/*[clinic end generated code: output=e53a8b7a250d8ffc input=23237a046f8388f5]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_noinline
+    a: object
+    /
+    b: object
+    c: object = None
+    / [from 3.14]
+    # Force to use _PyArg_ParseStackAndKeywords.
+    d: str(accept={str, robuffer}, zeroes=True) = ''
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_noinline_impl(PyObject *module, PyObject *a, PyObject *b,
+                       PyObject *c, const char *d, Py_ssize_t d_length)
+/*[clinic end generated code: output=f59da8113f2bad7c input=1d6db65bebb069d7]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_kwd_multi
+    a: object
+    /
+    b: object
+    / [from 3.14]
+    c: object
+    d: object
+    / [from 3.15]
+    e: object
+    f: object
+    g: object
+    / [from 3.16]
+    h: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_kwd_multi_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+                    PyObject *d, PyObject *e, PyObject *f, PyObject *g,
+                    PyObject *h)
+/*[clinic end generated code: output=ddfbde80fe1942e1 input=7a074e621c79efd7]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+depr_multi
+    a: object
+    /
+    b: object
+    / [from 3.14]
+    c: object
+    / [from 3.15]
+    d: object
+    * [from 3.15]
+    e: object
+    * [from 3.14]
+    f: object
+    *
+    g: object
+[clinic start generated code]*/
+
+static PyObject *
+depr_multi_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+                PyObject *d, PyObject *e, PyObject *f, PyObject *g)
+/*[clinic end generated code: output=f81c92852ca2d4ee input=5b847c5e44bedd02]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+// Reset PY_VERSION_HEX
+#undef PY_VERSION_HEX
+#define PY_VERSION_HEX _SAVED_PY_VERSION
+#undef _SAVED_PY_VERSION
+
+
+/*[clinic input]
+output pop
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=e7c7c42daced52b0]*/
+
 static PyMethodDef tester_methods[] = {
     TEST_EMPTY_FUNCTION_METHODDEF
     OBJECTS_CONVERTER_METHODDEF
@@ -1245,10 +1863,32 @@ static PyMethodDef tester_methods[] = {
     GH_32092_KW_PASS_METHODDEF
     GH_99233_REFCOUNT_METHODDEF
     GH_99240_DOUBLE_FREE_METHODDEF
+    NULL_OR_TUPLE_FOR_VARARGS_METHODDEF
     CLONE_F1_METHODDEF
     CLONE_F2_METHODDEF
     CLONE_WITH_CONV_F1_METHODDEF
     CLONE_WITH_CONV_F2_METHODDEF
+
+    DEPR_STAR_POS0_LEN1_METHODDEF
+    DEPR_STAR_POS0_LEN2_METHODDEF
+    DEPR_STAR_POS0_LEN3_WITH_KWD_METHODDEF
+    DEPR_STAR_POS1_LEN1_OPT_METHODDEF
+    DEPR_STAR_POS1_LEN1_METHODDEF
+    DEPR_STAR_POS1_LEN2_WITH_KWD_METHODDEF
+    DEPR_STAR_POS2_LEN1_METHODDEF
+    DEPR_STAR_POS2_LEN2_METHODDEF
+    DEPR_STAR_POS2_LEN2_WITH_KWD_METHODDEF
+    DEPR_STAR_NOINLINE_METHODDEF
+    DEPR_STAR_MULTI_METHODDEF
+    DEPR_KWD_REQUIRED_1_METHODDEF
+    DEPR_KWD_REQUIRED_2_METHODDEF
+    DEPR_KWD_OPTIONAL_1_METHODDEF
+    DEPR_KWD_OPTIONAL_2_METHODDEF
+    DEPR_KWD_OPTIONAL_3_METHODDEF
+    DEPR_KWD_REQUIRED_OPTIONAL_METHODDEF
+    DEPR_KWD_NOINLINE_METHODDEF
+    DEPR_KWD_MULTI_METHODDEF
+    DEPR_MULTI_METHODDEF
     {NULL, NULL}
 };
 
@@ -1262,7 +1902,33 @@ static struct PyModuleDef _testclinic_module = {
 PyMODINIT_FUNC
 PyInit__testclinic(void)
 {
-    return PyModule_Create(&_testclinic_module);
+    PyObject *m = PyModule_Create(&_testclinic_module);
+    if (m == NULL) {
+        return NULL;
+    }
+    if (PyModule_AddType(m, &DeprStarNew) < 0) {
+        goto error;
+    }
+    if (PyModule_AddType(m, &DeprStarInit) < 0) {
+        goto error;
+    }
+    if (PyModule_AddType(m, &DeprStarInitNoInline) < 0) {
+        goto error;
+    }
+    if (PyModule_AddType(m, &DeprKwdNew) < 0) {
+        goto error;
+    }
+    if (PyModule_AddType(m, &DeprKwdInit) < 0) {
+        goto error;
+    }
+    if (PyModule_AddType(m, &DeprKwdInitNoInline) < 0) {
+        goto error;
+    }
+    return m;
+
+error:
+    Py_DECREF(m);
+    return NULL;
 }
 
 #undef RETURN_PACKED_ARGS
diff --git a/Modules/_testclinic_limited.c b/Modules/_testclinic_limited.c
new file mode 100644
index 00000000000000..61bc84134458da
--- /dev/null
+++ b/Modules/_testclinic_limited.c
@@ -0,0 +1,99 @@
+// _testclinic_limited can built with the Py_BUILD_CORE_BUILTIN macro defined
+// if one of the Modules/Setup files asks to build it as "static" (gh-109723).
+#undef Py_BUILD_CORE
+#undef Py_BUILD_CORE_MODULE
+#undef Py_BUILD_CORE_BUILTIN
+
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+// For now, only limited C API 3.13 is supported
+#define Py_LIMITED_API 0x030d0000
+#endif
+
+/* Always enable assertions */
+#undef NDEBUG
+
+#include "Python.h"
+
+
+#include "clinic/_testclinic_limited.c.h"
+
+
+/*[clinic input]
+module  _testclinic_limited
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=dd408149a4fc0dbb]*/
+
+
+/*[clinic input]
+test_empty_function
+
+[clinic start generated code]*/
+
+static PyObject *
+test_empty_function_impl(PyObject *module)
+/*[clinic end generated code: output=0f8aeb3ddced55cb input=0dd7048651ad4ae4]*/
+{
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+my_int_func -> int
+
+    arg: int
+    /
+
+[clinic start generated code]*/
+
+static int
+my_int_func_impl(PyObject *module, int arg)
+/*[clinic end generated code: output=761cd54582f10e4f input=16eb8bba71d82740]*/
+{
+    return arg;
+}
+
+
+/*[clinic input]
+my_int_sum -> int
+
+    x: int
+    y: int
+    /
+
+[clinic start generated code]*/
+
+static int
+my_int_sum_impl(PyObject *module, int x, int y)
+/*[clinic end generated code: output=3e52db9ab5f37e2f input=0edb6796813bf2d3]*/
+{
+    return x + y;
+}
+
+
+static PyMethodDef tester_methods[] = {
+    TEST_EMPTY_FUNCTION_METHODDEF
+    MY_INT_FUNC_METHODDEF
+    MY_INT_SUM_METHODDEF
+    {NULL, NULL}
+};
+
+static struct PyModuleDef _testclinic_module = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_testclinic_limited",
+    .m_size = 0,
+    .m_methods = tester_methods,
+};
+
+PyMODINIT_FUNC
+PyInit__testclinic_limited(void)
+{
+    PyObject *m = PyModule_Create(&_testclinic_module);
+    if (m == NULL) {
+        return NULL;
+    }
+    return m;
+}
diff --git a/Modules/_testimportmultiple.c b/Modules/_testimportmultiple.c
index 1caeb66eb8c858..245e81b2dce7f8 100644
--- a/Modules/_testimportmultiple.c
+++ b/Modules/_testimportmultiple.c
@@ -3,7 +3,16 @@
  * file (issue16421). This file defines 3 modules (_testimportmodule,
  * foo, bar), only the first one is called the same as the compiled file.
  */
-#include<Python.h>
+
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+#define Py_LIMITED_API 0x03020000
+#endif
+
+#include <Python.h>
 
 static struct PyModuleDef _testimportmultiple = {
     PyModuleDef_HEAD_INIT,
@@ -54,4 +63,3 @@ static struct PyModuleDef _barmodule = {
 PyMODINIT_FUNC PyInit__testimportmultiple_bar(void){
     return PyModule_Create(&_barmodule);
 }
-
diff --git a/Modules/_testinternalcapi.c b/Modules/_testinternalcapi.c
index ea9b6e72b3c924..ba7653f2d9c7aa 100644
--- a/Modules/_testinternalcapi.c
+++ b/Modules/_testinternalcapi.c
@@ -9,25 +9,33 @@
 /* Always enable assertions */
 #undef NDEBUG
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
-#include "pycore_atomic_funcs.h" // _Py_atomic_int_get()
-#include "pycore_bitutils.h"     // _Py_bswap32()
-#include "pycore_compile.h"      // _PyCompile_CodeGen, _PyCompile_OptimizeCfg, _PyCompile_Assemble
-#include "pycore_fileutils.h"    // _Py_normpath
-#include "pycore_frame.h"        // _PyInterpreterFrame
-#include "pycore_gc.h"           // PyGC_Head
-#include "pycore_hashtable.h"    // _Py_hashtable_new()
-#include "pycore_initconfig.h"   // _Py_GetConfigsAsDict()
-#include "pycore_pathconfig.h"   // _PyPathConfig_ClearGlobal()
-#include "pycore_interp.h"       // _PyInterpreterState_GetConfigCopy()
-#include "pycore_pyerrors.h"     // _Py_UTF8_Edit_Cost()
-#include "pycore_pystate.h"      // _PyThreadState_GET()
-#include "osdefs.h"              // MAXPATHLEN
+#include "pycore_bitutils.h"      // _Py_bswap32()
+#include "pycore_bytesobject.h"   // _PyBytes_Find()
+#include "pycore_ceval.h"         // _PyEval_AddPendingCall()
+#include "pycore_compile.h"       // _PyCompile_CodeGen()
+#include "pycore_context.h"       // _PyContext_NewHamtForTests()
+#include "pycore_dict.h"          // _PyDictOrValues_GetValues()
+#include "pycore_fileutils.h"     // _Py_normpath()
+#include "pycore_frame.h"         // _PyInterpreterFrame
+#include "pycore_gc.h"            // PyGC_Head
+#include "pycore_hashtable.h"     // _Py_hashtable_new()
+#include "pycore_initconfig.h"    // _Py_GetConfigsAsDict()
+#include "pycore_interp.h"        // _PyInterpreterState_GetConfigCopy()
+#include "pycore_long.h"          // _PyLong_Sign()
+#include "pycore_object.h"        // _PyObject_IsFreed()
+#include "pycore_pathconfig.h"    // _PyPathConfig_ClearGlobal()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+#include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_typeobject.h"    // _PyType_GetModuleName()
+
+#include "interpreteridobject.h"  // PyInterpreterID_LookUp()
 
 #include "clinic/_testinternalcapi.c.h"
 
+// Include test definitions from _testinternalcapi/
+#include "_testinternalcapi/parts.h"
+
 
 #define MODULE_NAME "_testinternalcapi"
 
@@ -102,6 +110,14 @@ get_recursion_depth(PyObject *self, PyObject *Py_UNUSED(args))
 }
 
 
+static PyObject*
+get_c_recursion_remaining(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+    return PyLong_FromLong(tstate->c_recursion_remaining);
+}
+
+
 static PyObject*
 test_bswap(PyObject *self, PyObject *Py_UNUSED(args))
 {
@@ -342,17 +358,6 @@ test_reset_path_config(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(arg))
 }
 
 
-static PyObject*
-test_atomic_funcs(PyObject *self, PyObject *Py_UNUSED(args))
-{
-    // Test _Py_atomic_size_get() and _Py_atomic_size_set()
-    Py_ssize_t var = 1;
-    _Py_atomic_size_set(&var, 2);
-    assert(_Py_atomic_size_get(&var) == 2);
-    Py_RETURN_NONE;
-}
-
-
 static int
 check_edit_cost(const char *a, const char *b, Py_ssize_t expected)
 {
@@ -438,6 +443,118 @@ test_edit_cost(PyObject *self, PyObject *Py_UNUSED(args))
 }
 
 
+static int
+check_bytes_find(const char *haystack0, const char *needle0,
+                 int offset, Py_ssize_t expected)
+{
+    Py_ssize_t len_haystack = strlen(haystack0);
+    Py_ssize_t len_needle = strlen(needle0);
+    Py_ssize_t result_1 = _PyBytes_Find(haystack0, len_haystack,
+                                        needle0, len_needle, offset);
+    if (result_1 != expected) {
+        PyErr_Format(PyExc_AssertionError,
+                    "Incorrect result_1: '%s' in '%s' (offset=%zd)",
+                    needle0, haystack0, offset);
+        return -1;
+    }
+    // Allocate new buffer with no NULL terminator.
+    char *haystack = PyMem_Malloc(len_haystack);
+    if (haystack == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    char *needle = PyMem_Malloc(len_needle);
+    if (needle == NULL) {
+        PyMem_Free(haystack);
+        PyErr_NoMemory();
+        return -1;
+    }
+    memcpy(haystack, haystack0, len_haystack);
+    memcpy(needle, needle0, len_needle);
+    Py_ssize_t result_2 = _PyBytes_Find(haystack, len_haystack,
+                                        needle, len_needle, offset);
+    PyMem_Free(haystack);
+    PyMem_Free(needle);
+    if (result_2 != expected) {
+        PyErr_Format(PyExc_AssertionError,
+                    "Incorrect result_2: '%s' in '%s' (offset=%zd)",
+                    needle0, haystack0, offset);
+        return -1;
+    }
+    return 0;
+}
+
+static int
+check_bytes_find_large(Py_ssize_t len_haystack, Py_ssize_t len_needle,
+                       const char *needle)
+{
+    char *zeros = PyMem_RawCalloc(len_haystack, 1);
+    if (zeros == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    Py_ssize_t res = _PyBytes_Find(zeros, len_haystack, needle, len_needle, 0);
+    PyMem_RawFree(zeros);
+    if (res != -1) {
+        PyErr_Format(PyExc_AssertionError,
+                    "check_bytes_find_large(%zd, %zd) found %zd",
+                    len_haystack, len_needle, res);
+        return -1;
+    }
+    return 0;
+}
+
+static PyObject *
+test_bytes_find(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    #define CHECK(H, N, O, E) do {               \
+        if (check_bytes_find(H, N, O, E) < 0) {  \
+            return NULL;                         \
+        }                                        \
+    } while (0)
+
+    CHECK("", "", 0, 0);
+    CHECK("Python", "", 0, 0);
+    CHECK("Python", "", 3, 3);
+    CHECK("Python", "", 6, 6);
+    CHECK("Python", "yth", 0, 1);
+    CHECK("ython", "yth", 1, 1);
+    CHECK("thon", "yth", 2, -1);
+    CHECK("Python", "thon", 0, 2);
+    CHECK("ython", "thon", 1, 2);
+    CHECK("thon", "thon", 2, 2);
+    CHECK("hon", "thon", 3, -1);
+    CHECK("Pytho", "zz", 0, -1);
+    CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "ab", 0, -1);
+    CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "ba", 0, -1);
+    CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "bb", 0, -1);
+    CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab", "ab", 0, 30);
+    CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaba", "ba", 0, 30);
+    CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaabb", "bb", 0, 30);
+    #undef CHECK
+
+    // Hunt for segfaults
+    // n, m chosen here so that (n - m) % (m + 1) == 0
+    // This would make default_find in fastsearch.h access haystack[n].
+    if (check_bytes_find_large(2048, 2, "ab") < 0) {
+        return NULL;
+    }
+    if (check_bytes_find_large(4096, 16, "0123456789abcdef") < 0) {
+        return NULL;
+    }
+    if (check_bytes_find_large(8192, 2, "ab") < 0) {
+        return NULL;
+    }
+    if (check_bytes_find_large(16384, 4, "abcd") < 0) {
+        return NULL;
+    }
+    if (check_bytes_find_large(32768, 2, "ab") < 0) {
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+
 static PyObject *
 normalize_path(PyObject *self, PyObject *filename)
 {
@@ -554,7 +671,7 @@ static PyObject *
 set_eval_frame_default(PyObject *self, PyObject *Py_UNUSED(args))
 {
     module_state *state = get_module_state(self);
-    _PyInterpreterState_SetEvalFrameFunc(PyInterpreterState_Get(), _PyEval_EvalFrameDefault);
+    _PyInterpreterState_SetEvalFrameFunc(_PyInterpreterState_GET(), _PyEval_EvalFrameDefault);
     Py_CLEAR(state->record_list);
     Py_RETURN_NONE;
 }
@@ -567,7 +684,11 @@ record_eval(PyThreadState *tstate, struct _PyInterpreterFrame *f, int exc)
         assert(module != NULL);
         module_state *state = get_module_state(module);
         Py_DECREF(module);
-        PyList_Append(state->record_list, ((PyFunctionObject *)f->f_funcobj)->func_name);
+        int res = PyList_Append(state->record_list,
+                                ((PyFunctionObject *)f->f_funcobj)->func_name);
+        if (res < 0) {
+            return NULL;
+        }
     }
     return _PyEval_EvalFrameDefault(tstate, f, exc);
 }
@@ -582,10 +703,27 @@ set_eval_frame_record(PyObject *self, PyObject *list)
         return NULL;
     }
     Py_XSETREF(state->record_list, Py_NewRef(list));
-    _PyInterpreterState_SetEvalFrameFunc(PyInterpreterState_Get(), record_eval);
+    _PyInterpreterState_SetEvalFrameFunc(_PyInterpreterState_GET(), record_eval);
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+
+_testinternalcapi.compiler_cleandoc -> object
+
+    doc: unicode
+
+C implementation of inspect.cleandoc().
+[clinic start generated code]*/
+
+static PyObject *
+_testinternalcapi_compiler_cleandoc_impl(PyObject *module, PyObject *doc)
+/*[clinic end generated code: output=2dd203a80feff5bc input=2de03fab931d9cdc]*/
+{
+    return _PyCompile_CleanDoc(doc);
+}
+
+
 /*[clinic input]
 
 _testinternalcapi.compiler_codegen -> object
@@ -615,16 +753,17 @@ _testinternalcapi.optimize_cfg -> object
 
   instructions: object
   consts: object
+  nlocals: int
 
 Apply compiler optimizations to an instruction list.
 [clinic start generated code]*/
 
 static PyObject *
 _testinternalcapi_optimize_cfg_impl(PyObject *module, PyObject *instructions,
-                                    PyObject *consts)
-/*[clinic end generated code: output=5412aeafca683c8b input=7e8a3de86ebdd0f9]*/
+                                    PyObject *consts, int nlocals)
+/*[clinic end generated code: output=57c53c3a3dfd1df0 input=6a96d1926d58d7e5]*/
 {
-    return _PyCompile_OptimizeCfg(instructions, consts);
+    return _PyCompile_OptimizeCfg(instructions, consts, nlocals);
 }
 
 static int
@@ -757,10 +896,750 @@ clear_extension(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+write_perf_map_entry(PyObject *self, PyObject *args)
+{
+    PyObject *code_addr_v;
+    const void *code_addr;
+    unsigned int code_size;
+    const char *entry_name;
+
+    if (!PyArg_ParseTuple(args, "OIs", &code_addr_v, &code_size, &entry_name))
+        return NULL;
+    code_addr = PyLong_AsVoidPtr(code_addr_v);
+    if (code_addr == NULL) {
+        return NULL;
+    }
+
+    int ret = PyUnstable_WritePerfMapEntry(code_addr, code_size, entry_name);
+    if (ret < 0) {
+        PyErr_SetFromErrno(PyExc_OSError);
+        return NULL;
+    }
+    return PyLong_FromLong(ret);
+}
+
+static PyObject *
+perf_map_state_teardown(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
+{
+    PyUnstable_PerfMapState_Fini();
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+iframe_getcode(PyObject *self, PyObject *frame)
+{
+    if (!PyFrame_Check(frame)) {
+        PyErr_SetString(PyExc_TypeError, "argument must be a frame");
+        return NULL;
+    }
+    struct _PyInterpreterFrame *f = ((PyFrameObject *)frame)->f_frame;
+    return PyUnstable_InterpreterFrame_GetCode(f);
+}
+
+static PyObject *
+iframe_getline(PyObject *self, PyObject *frame)
+{
+    if (!PyFrame_Check(frame)) {
+        PyErr_SetString(PyExc_TypeError, "argument must be a frame");
+        return NULL;
+    }
+    struct _PyInterpreterFrame *f = ((PyFrameObject *)frame)->f_frame;
+    return PyLong_FromLong(PyUnstable_InterpreterFrame_GetLine(f));
+}
+
+static PyObject *
+iframe_getlasti(PyObject *self, PyObject *frame)
+{
+    if (!PyFrame_Check(frame)) {
+        PyErr_SetString(PyExc_TypeError, "argument must be a frame");
+        return NULL;
+    }
+    struct _PyInterpreterFrame *f = ((PyFrameObject *)frame)->f_frame;
+    return PyLong_FromLong(PyUnstable_InterpreterFrame_GetLasti(f));
+}
+
+static PyObject *
+get_counter_optimizer(PyObject *self, PyObject *arg)
+{
+    return PyUnstable_Optimizer_NewCounter();
+}
+
+static PyObject *
+get_uop_optimizer(PyObject *self, PyObject *arg)
+{
+    return PyUnstable_Optimizer_NewUOpOptimizer();
+}
+
+static PyObject *
+set_optimizer(PyObject *self, PyObject *opt)
+{
+    if (opt == Py_None) {
+        opt = NULL;
+    }
+    PyUnstable_SetOptimizer((_PyOptimizerObject*)opt);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+get_optimizer(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *opt = (PyObject *)PyUnstable_GetOptimizer();
+    if (opt == NULL) {
+        Py_RETURN_NONE;
+    }
+    return opt;
+}
+
+static PyObject *
+get_executor(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
+{
+
+    if (!_PyArg_CheckPositional("get_executor", nargs, 2, 2)) {
+        return NULL;
+    }
+    PyObject *code = args[0];
+    PyObject *offset = args[1];
+    long ioffset = PyLong_AsLong(offset);
+    if (ioffset == -1 && PyErr_Occurred()) {
+        return NULL;
+    }
+    if (!PyCode_Check(code)) {
+         PyErr_SetString(PyExc_TypeError, "first argument must be a code object");
+        return NULL;
+    }
+    return (PyObject *)PyUnstable_GetExecutor((PyCodeObject *)code, ioffset);
+}
+
+static PyObject *
+add_executor_dependency(PyObject *self, PyObject *args)
+{
+    PyObject *exec;
+    PyObject *obj;
+    if (!PyArg_ParseTuple(args, "OO", &exec, &obj)) {
+        return NULL;
+    }
+    /* No way to tell in general if exec is an executor, so we only accept
+     * counting_executor */
+    if (strcmp(Py_TYPE(exec)->tp_name, "counting_executor")) {
+        PyErr_SetString(PyExc_TypeError, "argument must be a counting_executor");
+        return NULL;
+    }
+    _Py_Executor_DependsOn((_PyExecutorObject *)exec, obj);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+invalidate_executors(PyObject *self, PyObject *obj)
+{
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    _Py_Executors_InvalidateDependency(interp, obj);
+    Py_RETURN_NONE;
+}
+
+static int _pending_callback(void *arg)
+{
+    /* we assume the argument is callable object to which we own a reference */
+    PyObject *callable = (PyObject *)arg;
+    PyObject *r = PyObject_CallNoArgs(callable);
+    Py_DECREF(callable);
+    Py_XDECREF(r);
+    return r != NULL ? 0 : -1;
+}
+
+/* The following requests n callbacks to _pending_callback.  It can be
+ * run from any python thread.
+ */
+static PyObject *
+pending_threadfunc(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    PyObject *callable;
+    int ensure_added = 0;
+    static char *kwlist[] = {"", "ensure_added", NULL};
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+                                     "O|$p:pending_threadfunc", kwlist,
+                                     &callable, &ensure_added))
+    {
+        return NULL;
+    }
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+
+    /* create the reference for the callbackwhile we hold the lock */
+    Py_INCREF(callable);
+
+    int r;
+    Py_BEGIN_ALLOW_THREADS
+    r = _PyEval_AddPendingCall(interp, &_pending_callback, callable, 0);
+    Py_END_ALLOW_THREADS
+    if (r < 0) {
+        /* unsuccessful add */
+        if (!ensure_added) {
+            Py_DECREF(callable);
+            Py_RETURN_FALSE;
+        }
+        do {
+            Py_BEGIN_ALLOW_THREADS
+            r = _PyEval_AddPendingCall(interp, &_pending_callback, callable, 0);
+            Py_END_ALLOW_THREADS
+        } while (r < 0);
+    }
+
+    Py_RETURN_TRUE;
+}
+
+
+static struct {
+    int64_t interpid;
+} pending_identify_result;
+
+static int
+_pending_identify_callback(void *arg)
+{
+    PyThread_type_lock mutex = (PyThread_type_lock)arg;
+    assert(pending_identify_result.interpid == -1);
+    PyThreadState *tstate = PyThreadState_Get();
+    pending_identify_result.interpid = PyInterpreterState_GetID(tstate->interp);
+    PyThread_release_lock(mutex);
+    return 0;
+}
+
+static PyObject *
+pending_identify(PyObject *self, PyObject *args)
+{
+    PyObject *interpid;
+    if (!PyArg_ParseTuple(args, "O:pending_identify", &interpid)) {
+        return NULL;
+    }
+    PyInterpreterState *interp = PyInterpreterID_LookUp(interpid);
+    if (interp == NULL) {
+        if (!PyErr_Occurred()) {
+            PyErr_SetString(PyExc_ValueError, "interpreter not found");
+        }
+        return NULL;
+    }
+
+    pending_identify_result.interpid = -1;
+
+    PyThread_type_lock mutex = PyThread_allocate_lock();
+    if (mutex == NULL) {
+        return NULL;
+    }
+    PyThread_acquire_lock(mutex, WAIT_LOCK);
+    /* It gets released in _pending_identify_callback(). */
+
+    int r;
+    do {
+        Py_BEGIN_ALLOW_THREADS
+        r = _PyEval_AddPendingCall(interp,
+                                   &_pending_identify_callback, (void *)mutex,
+                                   0);
+        Py_END_ALLOW_THREADS
+    } while (r < 0);
+
+    /* Wait for the pending call to complete. */
+    PyThread_acquire_lock(mutex, WAIT_LOCK);
+    PyThread_release_lock(mutex);
+    PyThread_free_lock(mutex);
+
+    PyObject *res = PyLong_FromLongLong(pending_identify_result.interpid);
+    pending_identify_result.interpid = -1;
+    if (res == NULL) {
+        return NULL;
+    }
+    return res;
+}
+
+static PyObject *
+tracemalloc_get_traceback(PyObject *self, PyObject *args)
+{
+    unsigned int domain;
+    PyObject *ptr_obj;
+
+    if (!PyArg_ParseTuple(args, "IO", &domain, &ptr_obj)) {
+        return NULL;
+    }
+    void *ptr = PyLong_AsVoidPtr(ptr_obj);
+    if (PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return _PyTraceMalloc_GetTraceback(domain, (uintptr_t)ptr);
+}
+
+
+// Test PyThreadState C API
+static PyObject *
+test_tstate_capi(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    // PyThreadState_Get()
+    PyThreadState *tstate = PyThreadState_Get();
+    assert(tstate != NULL);
+
+    // test _PyThreadState_GetDict()
+    PyObject *dict = PyThreadState_GetDict();
+    assert(dict != NULL);
+    // dict is a borrowed reference
+
+    PyObject *dict2 = _PyThreadState_GetDict(tstate);
+    assert(dict2 == dict);
+    // dict2 is a borrowed reference
+
+    Py_RETURN_NONE;
+}
+
+
+/* Test _PyUnicode_TransformDecimalAndSpaceToASCII() */
+static PyObject *
+unicode_transformdecimalandspacetoascii(PyObject *self, PyObject *arg)
+{
+    if (arg == Py_None) {
+        arg = NULL;
+    }
+    return _PyUnicode_TransformDecimalAndSpaceToASCII(arg);
+}
+
+
+struct atexit_data {
+    int called;
+};
+
+static void
+callback(void *data)
+{
+    ((struct atexit_data *)data)->called += 1;
+}
+
+static PyObject *
+test_atexit(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyThreadState *oldts = PyThreadState_Swap(NULL);
+    PyThreadState *tstate = Py_NewInterpreter();
+
+    struct atexit_data data = {0};
+    int res = PyUnstable_AtExit(tstate->interp, callback, (void *)&data);
+    Py_EndInterpreter(tstate);
+    PyThreadState_Swap(oldts);
+    if (res < 0) {
+        return NULL;
+    }
+
+    if (data.called == 0) {
+        PyErr_SetString(PyExc_RuntimeError, "atexit callback not called");
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+
+static PyObject *
+test_pyobject_is_freed(const char *test_name, PyObject *op)
+{
+    if (!_PyObject_IsFreed(op)) {
+        PyErr_SetString(PyExc_AssertionError,
+                        "object is not seen as freed");
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+check_pyobject_null_is_freed(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyObject *op = NULL;
+    return test_pyobject_is_freed("check_pyobject_null_is_freed", op);
+}
+
+
+static PyObject *
+check_pyobject_uninitialized_is_freed(PyObject *self,
+                                      PyObject *Py_UNUSED(args))
+{
+    PyObject *op = (PyObject *)PyObject_Malloc(sizeof(PyObject));
+    if (op == NULL) {
+        return NULL;
+    }
+    /* Initialize reference count to avoid early crash in ceval or GC */
+    Py_SET_REFCNT(op, 1);
+    /* object fields like ob_type are uninitialized! */
+    return test_pyobject_is_freed("check_pyobject_uninitialized_is_freed", op);
+}
+
+
+static PyObject *
+check_pyobject_forbidden_bytes_is_freed(PyObject *self,
+                                        PyObject *Py_UNUSED(args))
+{
+    /* Allocate an incomplete PyObject structure: truncate 'ob_type' field */
+    PyObject *op = (PyObject *)PyObject_Malloc(offsetof(PyObject, ob_type));
+    if (op == NULL) {
+        return NULL;
+    }
+    /* Initialize reference count to avoid early crash in ceval or GC */
+    Py_SET_REFCNT(op, 1);
+    /* ob_type field is after the memory block: part of "forbidden bytes"
+       when using debug hooks on memory allocators! */
+    return test_pyobject_is_freed("check_pyobject_forbidden_bytes_is_freed", op);
+}
+
+
+static PyObject *
+check_pyobject_freed_is_freed(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    /* This test would fail if run with the address sanitizer */
+#ifdef _Py_ADDRESS_SANITIZER
+    Py_RETURN_NONE;
+#else
+    PyObject *op = PyObject_CallNoArgs((PyObject *)&PyBaseObject_Type);
+    if (op == NULL) {
+        return NULL;
+    }
+    Py_TYPE(op)->tp_dealloc(op);
+    /* Reset reference count to avoid early crash in ceval or GC */
+    Py_SET_REFCNT(op, 1);
+    /* object memory is freed! */
+    return test_pyobject_is_freed("check_pyobject_freed_is_freed", op);
+#endif
+}
+
+
+static PyObject *
+test_pymem_getallocatorsname(PyObject *self, PyObject *args)
+{
+    const char *name = _PyMem_GetCurrentAllocatorName();
+    if (name == NULL) {
+        PyErr_SetString(PyExc_RuntimeError, "cannot get allocators name");
+        return NULL;
+    }
+    return PyUnicode_FromString(name);
+}
+
+static PyObject *
+get_object_dict_values(PyObject *self, PyObject *obj)
+{
+    PyTypeObject *type = Py_TYPE(obj);
+    if (!_PyType_HasFeature(type, Py_TPFLAGS_MANAGED_DICT)) {
+        Py_RETURN_NONE;
+    }
+    PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(obj);
+    if (!_PyDictOrValues_IsValues(dorv)) {
+        Py_RETURN_NONE;
+    }
+    PyDictValues *values = _PyDictOrValues_GetValues(dorv);
+    PyDictKeysObject *keys = ((PyHeapTypeObject *)type)->ht_cached_keys;
+    assert(keys != NULL);
+    int size = (int)keys->dk_nentries;
+    assert(size >= 0);
+    PyObject *res = PyTuple_New(size);
+    if (res == NULL) {
+        return NULL;
+    }
+    _Py_DECLARE_STR(anon_null, "<NULL>");
+    for(int i = 0; i < size; i++) {
+        PyObject *item = values->values[i];
+        if (item == NULL) {
+            item = &_Py_STR(anon_null);
+        }
+        else {
+            Py_INCREF(item);
+        }
+        PyTuple_SET_ITEM(res, i, item);
+    }
+    return res;
+}
+
+
+static PyObject*
+new_hamt(PyObject *self, PyObject *args)
+{
+    return _PyContext_NewHamtForTests();
+}
+
+
+static PyObject*
+dict_getitem_knownhash(PyObject *self, PyObject *args)
+{
+    PyObject *mp, *key, *result;
+    Py_ssize_t hash;
+
+    if (!PyArg_ParseTuple(args, "OOn:dict_getitem_knownhash",
+                          &mp, &key, &hash)) {
+        return NULL;
+    }
+
+    result = _PyDict_GetItem_KnownHash(mp, key, (Py_hash_t)hash);
+    if (result == NULL && !PyErr_Occurred()) {
+        _PyErr_SetKeyError(key);
+        return NULL;
+    }
+
+    return Py_XNewRef(result);
+}
+
+
+/* To run some code in a sub-interpreter. */
+static PyObject *
+run_in_subinterp_with_config(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    const char *code;
+    int use_main_obmalloc = -1;
+    int allow_fork = -1;
+    int allow_exec = -1;
+    int allow_threads = -1;
+    int allow_daemon_threads = -1;
+    int check_multi_interp_extensions = -1;
+    int gil = -1;
+    int r;
+    PyThreadState *substate, *mainstate;
+    /* only initialise 'cflags.cf_flags' to test backwards compatibility */
+    PyCompilerFlags cflags = {0};
+
+    static char *kwlist[] = {"code",
+                             "use_main_obmalloc",
+                             "allow_fork",
+                             "allow_exec",
+                             "allow_threads",
+                             "allow_daemon_threads",
+                             "check_multi_interp_extensions",
+                             "gil",
+                             NULL};
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
+                    "s$ppppppi:run_in_subinterp_with_config", kwlist,
+                    &code, &use_main_obmalloc,
+                    &allow_fork, &allow_exec,
+                    &allow_threads, &allow_daemon_threads,
+                    &check_multi_interp_extensions,
+                    &gil)) {
+        return NULL;
+    }
+    if (use_main_obmalloc < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing use_main_obmalloc");
+        return NULL;
+    }
+    if (allow_fork < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing allow_fork");
+        return NULL;
+    }
+    if (allow_exec < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing allow_exec");
+        return NULL;
+    }
+    if (allow_threads < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing allow_threads");
+        return NULL;
+    }
+    if (gil < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing gil");
+        return NULL;
+    }
+    if (allow_daemon_threads < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing allow_daemon_threads");
+        return NULL;
+    }
+    if (check_multi_interp_extensions < 0) {
+        PyErr_SetString(PyExc_ValueError, "missing check_multi_interp_extensions");
+        return NULL;
+    }
+
+    mainstate = PyThreadState_Get();
+
+    PyThreadState_Swap(NULL);
+
+    const PyInterpreterConfig config = {
+        .use_main_obmalloc = use_main_obmalloc,
+        .allow_fork = allow_fork,
+        .allow_exec = allow_exec,
+        .allow_threads = allow_threads,
+        .allow_daemon_threads = allow_daemon_threads,
+        .check_multi_interp_extensions = check_multi_interp_extensions,
+        .gil = gil,
+    };
+    PyStatus status = Py_NewInterpreterFromConfig(&substate, &config);
+    if (PyStatus_Exception(status)) {
+        /* Since no new thread state was created, there is no exception to
+           propagate; raise a fresh one after swapping in the old thread
+           state. */
+        PyThreadState_Swap(mainstate);
+        _PyErr_SetFromPyStatus(status);
+        PyObject *exc = PyErr_GetRaisedException();
+        PyErr_SetString(PyExc_RuntimeError, "sub-interpreter creation failed");
+        _PyErr_ChainExceptions1(exc);
+        return NULL;
+    }
+    assert(substate != NULL);
+    r = PyRun_SimpleStringFlags(code, &cflags);
+    Py_EndInterpreter(substate);
+
+    PyThreadState_Swap(mainstate);
+
+    return PyLong_FromLong(r);
+}
+
+
+static void
+_xid_capsule_destructor(PyObject *capsule)
+{
+    _PyCrossInterpreterData *data = \
+            (_PyCrossInterpreterData *)PyCapsule_GetPointer(capsule, NULL);
+    if (data != NULL) {
+        assert(_PyCrossInterpreterData_Release(data) == 0);
+        _PyCrossInterpreterData_Free(data);
+    }
+}
+
+static PyObject *
+get_crossinterp_data(PyObject *self, PyObject *args)
+{
+    PyObject *obj = NULL;
+    if (!PyArg_ParseTuple(args, "O:get_crossinterp_data", &obj)) {
+        return NULL;
+    }
+
+    _PyCrossInterpreterData *data = _PyCrossInterpreterData_New();
+    if (data == NULL) {
+        return NULL;
+    }
+    if (_PyObject_GetCrossInterpreterData(obj, data) != 0) {
+        _PyCrossInterpreterData_Free(data);
+        return NULL;
+    }
+    PyObject *capsule = PyCapsule_New(data, NULL, _xid_capsule_destructor);
+    if (capsule == NULL) {
+        assert(_PyCrossInterpreterData_Release(data) == 0);
+        _PyCrossInterpreterData_Free(data);
+    }
+    return capsule;
+}
+
+static PyObject *
+restore_crossinterp_data(PyObject *self, PyObject *args)
+{
+    PyObject *capsule = NULL;
+    if (!PyArg_ParseTuple(args, "O:restore_crossinterp_data", &capsule)) {
+        return NULL;
+    }
+
+    _PyCrossInterpreterData *data = \
+            (_PyCrossInterpreterData *)PyCapsule_GetPointer(capsule, NULL);
+    if (data == NULL) {
+        return NULL;
+    }
+    return _PyCrossInterpreterData_NewObject(data);
+}
+
+
+static PyObject *
+raiseTestError(const char* test_name, const char* msg)
+{
+    PyErr_Format(PyExc_AssertionError, "%s: %s", test_name, msg);
+    return NULL;
+}
+
+
+/*[clinic input]
+_testinternalcapi.test_long_numbits
+[clinic start generated code]*/
+
+static PyObject *
+_testinternalcapi_test_long_numbits_impl(PyObject *module)
+/*[clinic end generated code: output=745d62d120359434 input=f14ca6f638e44dad]*/
+{
+    struct triple {
+        long input;
+        size_t nbits;
+        int sign;
+    } testcases[] = {{0, 0, 0},
+                     {1L, 1, 1},
+                     {-1L, 1, -1},
+                     {2L, 2, 1},
+                     {-2L, 2, -1},
+                     {3L, 2, 1},
+                     {-3L, 2, -1},
+                     {4L, 3, 1},
+                     {-4L, 3, -1},
+                     {0x7fffL, 15, 1},          /* one Python int digit */
+             {-0x7fffL, 15, -1},
+             {0xffffL, 16, 1},
+             {-0xffffL, 16, -1},
+             {0xfffffffL, 28, 1},
+             {-0xfffffffL, 28, -1}};
+    size_t i;
+
+    for (i = 0; i < Py_ARRAY_LENGTH(testcases); ++i) {
+        size_t nbits;
+        int sign;
+        PyObject *plong;
+
+        plong = PyLong_FromLong(testcases[i].input);
+        if (plong == NULL)
+            return NULL;
+        nbits = _PyLong_NumBits(plong);
+        sign = _PyLong_Sign(plong);
+
+        Py_DECREF(plong);
+        if (nbits != testcases[i].nbits)
+            return raiseTestError("test_long_numbits",
+                            "wrong result for _PyLong_NumBits");
+        if (sign != testcases[i].sign)
+            return raiseTestError("test_long_numbits",
+                            "wrong result for _PyLong_Sign");
+    }
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+compile_perf_trampoline_entry(PyObject *self, PyObject *args)
+{
+    PyObject *co;
+    if (!PyArg_ParseTuple(args, "O!", &PyCode_Type, &co)) {
+        return NULL;
+    }
+    int ret = PyUnstable_PerfTrampoline_CompileCode((PyCodeObject *)co);
+    if (ret != 0) {
+        PyErr_SetString(PyExc_AssertionError, "Failed to compile trampoline");
+        return NULL;
+    }
+    return PyLong_FromLong(ret);
+}
+
+static PyObject *
+perf_trampoline_set_persist_after_fork(PyObject *self, PyObject *args)
+{
+    int enable;
+    if (!PyArg_ParseTuple(args, "i", &enable)) {
+        return NULL;
+    }
+    int ret = PyUnstable_PerfTrampoline_SetPersistAfterFork(enable);
+    if (ret == 0) {
+        PyErr_SetString(PyExc_AssertionError, "Failed to set persist_after_fork");
+        return NULL;
+    }
+    return PyLong_FromLong(ret);
+}
+
+
+static PyObject *
+get_type_module_name(PyObject *self, PyObject *type)
+{
+    assert(PyType_Check(type));
+    return _PyType_GetModuleName((PyTypeObject *)type);
+}
+
+
+#ifdef Py_GIL_DISABLED
+static PyObject *
+get_py_thread_id(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    uintptr_t tid = _Py_ThreadId();
+    Py_BUILD_ASSERT(sizeof(unsigned long long) >= sizeof(tid));
+    return PyLong_FromUnsignedLongLong(tid);
+}
+#endif
+
 
 static PyMethodDef module_functions[] = {
     {"get_configs", get_configs, METH_NOARGS},
     {"get_recursion_depth", get_recursion_depth, METH_NOARGS},
+    {"get_c_recursion_remaining", get_c_recursion_remaining, METH_NOARGS},
     {"test_bswap", test_bswap, METH_NOARGS},
     {"test_popcount", test_popcount, METH_NOARGS},
     {"test_bit_length", test_bit_length, METH_NOARGS},
@@ -768,19 +1647,61 @@ static PyMethodDef module_functions[] = {
     {"get_config", test_get_config, METH_NOARGS},
     {"set_config", test_set_config, METH_O},
     {"reset_path_config", test_reset_path_config, METH_NOARGS},
-    {"test_atomic_funcs", test_atomic_funcs, METH_NOARGS},
     {"test_edit_cost", test_edit_cost, METH_NOARGS},
+    {"test_bytes_find", test_bytes_find, METH_NOARGS},
     {"normalize_path", normalize_path, METH_O, NULL},
     {"get_getpath_codeobject", get_getpath_codeobject, METH_NOARGS, NULL},
     {"EncodeLocaleEx", encode_locale_ex, METH_VARARGS},
     {"DecodeLocaleEx", decode_locale_ex, METH_VARARGS},
     {"set_eval_frame_default", set_eval_frame_default, METH_NOARGS, NULL},
     {"set_eval_frame_record", set_eval_frame_record, METH_O, NULL},
+    _TESTINTERNALCAPI_COMPILER_CLEANDOC_METHODDEF
     _TESTINTERNALCAPI_COMPILER_CODEGEN_METHODDEF
     _TESTINTERNALCAPI_OPTIMIZE_CFG_METHODDEF
     _TESTINTERNALCAPI_ASSEMBLE_CODE_OBJECT_METHODDEF
     {"get_interp_settings", get_interp_settings, METH_VARARGS, NULL},
     {"clear_extension", clear_extension, METH_VARARGS, NULL},
+    {"write_perf_map_entry", write_perf_map_entry, METH_VARARGS},
+    {"perf_map_state_teardown", perf_map_state_teardown, METH_NOARGS},
+    {"iframe_getcode", iframe_getcode, METH_O, NULL},
+    {"iframe_getline", iframe_getline, METH_O, NULL},
+    {"iframe_getlasti", iframe_getlasti, METH_O, NULL},
+    {"get_optimizer", get_optimizer,  METH_NOARGS, NULL},
+    {"set_optimizer", set_optimizer,  METH_O, NULL},
+    {"get_executor", _PyCFunction_CAST(get_executor),  METH_FASTCALL, NULL},
+    {"get_counter_optimizer", get_counter_optimizer, METH_NOARGS, NULL},
+    {"get_uop_optimizer", get_uop_optimizer, METH_NOARGS, NULL},
+    {"add_executor_dependency", add_executor_dependency, METH_VARARGS, NULL},
+    {"invalidate_executors", invalidate_executors, METH_O, NULL},
+    {"pending_threadfunc", _PyCFunction_CAST(pending_threadfunc),
+     METH_VARARGS | METH_KEYWORDS},
+    {"pending_identify", pending_identify, METH_VARARGS, NULL},
+    {"_PyTraceMalloc_GetTraceback", tracemalloc_get_traceback, METH_VARARGS},
+    {"test_tstate_capi", test_tstate_capi, METH_NOARGS, NULL},
+    {"_PyUnicode_TransformDecimalAndSpaceToASCII", unicode_transformdecimalandspacetoascii, METH_O},
+    {"test_atexit", test_atexit, METH_NOARGS},
+    {"check_pyobject_forbidden_bytes_is_freed",
+                            check_pyobject_forbidden_bytes_is_freed, METH_NOARGS},
+    {"check_pyobject_freed_is_freed", check_pyobject_freed_is_freed, METH_NOARGS},
+    {"check_pyobject_null_is_freed",  check_pyobject_null_is_freed,  METH_NOARGS},
+    {"check_pyobject_uninitialized_is_freed",
+                              check_pyobject_uninitialized_is_freed, METH_NOARGS},
+    {"pymem_getallocatorsname", test_pymem_getallocatorsname, METH_NOARGS},
+    {"get_object_dict_values", get_object_dict_values, METH_O},
+    {"hamt", new_hamt, METH_NOARGS},
+    {"dict_getitem_knownhash",  dict_getitem_knownhash,          METH_VARARGS},
+    {"run_in_subinterp_with_config",
+     _PyCFunction_CAST(run_in_subinterp_with_config),
+     METH_VARARGS | METH_KEYWORDS},
+    {"compile_perf_trampoline_entry", compile_perf_trampoline_entry, METH_VARARGS},
+    {"perf_trampoline_set_persist_after_fork", perf_trampoline_set_persist_after_fork, METH_VARARGS},
+    {"get_crossinterp_data",    get_crossinterp_data,            METH_VARARGS},
+    {"restore_crossinterp_data", restore_crossinterp_data,       METH_VARARGS},
+    _TESTINTERNALCAPI_TEST_LONG_NUMBITS_METHODDEF
+    {"get_type_module_name",    get_type_module_name,            METH_O},
+#ifdef Py_GIL_DISABLED
+    {"py_thread_id", get_py_thread_id, METH_NOARGS},
+#endif
     {NULL, NULL} /* sentinel */
 };
 
@@ -790,8 +1711,31 @@ static PyMethodDef module_functions[] = {
 static int
 module_exec(PyObject *module)
 {
-    if (PyModule_AddObject(module, "SIZEOF_PYGC_HEAD",
-                           PyLong_FromSsize_t(sizeof(PyGC_Head))) < 0) {
+    if (_PyTestInternalCapi_Init_Lock(module) < 0) {
+        return 1;
+    }
+    if (_PyTestInternalCapi_Init_PyTime(module) < 0) {
+        return 1;
+    }
+    if (_PyTestInternalCapi_Init_Set(module) < 0) {
+        return 1;
+    }
+    if (_PyTestInternalCapi_Init_CriticalSection(module) < 0) {
+        return 1;
+    }
+
+    if (PyModule_Add(module, "SIZEOF_PYGC_HEAD",
+                        PyLong_FromSsize_t(sizeof(PyGC_Head))) < 0) {
+        return 1;
+    }
+
+    if (PyModule_Add(module, "SIZEOF_PYOBJECT",
+                        PyLong_FromSsize_t(sizeof(PyObject))) < 0) {
+        return 1;
+    }
+
+    if (PyModule_Add(module, "SIZEOF_TIME_T",
+                        PyLong_FromSsize_t(sizeof(time_t))) < 0) {
         return 1;
     }
 
diff --git a/Modules/_testinternalcapi/README.txt b/Modules/_testinternalcapi/README.txt
new file mode 100644
index 00000000000000..eb071135e4c592
--- /dev/null
+++ b/Modules/_testinternalcapi/README.txt
@@ -0,0 +1,5 @@
+Tests in this directory are compiled into the _testinternalcapi extension.
+The main file for the extension is Modules/_testinternalcapimodule.c, which
+calls `_PyTestInternalCapi_Init_*` from these functions.
+
+See Modules/_testcapi/README.txt for guideline when writing C test code.
\ No newline at end of file
diff --git a/Modules/_testinternalcapi/clinic/test_lock.c.h b/Modules/_testinternalcapi/clinic/test_lock.c.h
new file mode 100644
index 00000000000000..86875767343cd2
--- /dev/null
+++ b/Modules/_testinternalcapi/clinic/test_lock.c.h
@@ -0,0 +1,75 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+
+PyDoc_STRVAR(_testinternalcapi_benchmark_locks__doc__,
+"benchmark_locks($module, num_threads, use_pymutex=True,\n"
+"                critical_section_length=1, time_ms=1000, /)\n"
+"--\n"
+"\n");
+
+#define _TESTINTERNALCAPI_BENCHMARK_LOCKS_METHODDEF    \
+    {"benchmark_locks", _PyCFunction_CAST(_testinternalcapi_benchmark_locks), METH_FASTCALL, _testinternalcapi_benchmark_locks__doc__},
+
+static PyObject *
+_testinternalcapi_benchmark_locks_impl(PyObject *module,
+                                       Py_ssize_t num_threads,
+                                       int use_pymutex,
+                                       int critical_section_length,
+                                       int time_ms);
+
+static PyObject *
+_testinternalcapi_benchmark_locks(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    Py_ssize_t num_threads;
+    int use_pymutex = 1;
+    int critical_section_length = 1;
+    int time_ms = 1000;
+
+    if (!_PyArg_CheckPositional("benchmark_locks", nargs, 1, 4)) {
+        goto exit;
+    }
+    {
+        Py_ssize_t ival = -1;
+        PyObject *iobj = _PyNumber_Index(args[0]);
+        if (iobj != NULL) {
+            ival = PyLong_AsSsize_t(iobj);
+            Py_DECREF(iobj);
+        }
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        num_threads = ival;
+    }
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    use_pymutex = PyObject_IsTrue(args[1]);
+    if (use_pymutex < 0) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    critical_section_length = PyLong_AsInt(args[2]);
+    if (critical_section_length == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (nargs < 4) {
+        goto skip_optional;
+    }
+    time_ms = PyLong_AsInt(args[3]);
+    if (time_ms == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional:
+    return_value = _testinternalcapi_benchmark_locks_impl(module, num_threads, use_pymutex, critical_section_length, time_ms);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=105105d759c0c271 input=a9049054013a1b77]*/
diff --git a/Modules/_testinternalcapi/parts.h b/Modules/_testinternalcapi/parts.h
new file mode 100644
index 00000000000000..49a1395f499fc3
--- /dev/null
+++ b/Modules/_testinternalcapi/parts.h
@@ -0,0 +1,18 @@
+#ifndef Py_TESTINTERNALCAPI_PARTS_H
+#define Py_TESTINTERNALCAPI_PARTS_H
+
+// Always enable assertions
+#undef NDEBUG
+
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
+#include "Python.h"
+
+int _PyTestInternalCapi_Init_Lock(PyObject *module);
+int _PyTestInternalCapi_Init_PyTime(PyObject *module);
+int _PyTestInternalCapi_Init_Set(PyObject *module);
+int _PyTestInternalCapi_Init_CriticalSection(PyObject *module);
+
+#endif // Py_TESTINTERNALCAPI_PARTS_H
diff --git a/Modules/_testcapi/pytime.c b/Modules/_testinternalcapi/pytime.c
similarity index 80%
rename from Modules/_testcapi/pytime.c
rename to Modules/_testinternalcapi/pytime.c
index 7422bafc30193a..2b5f9eb0ef2851 100644
--- a/Modules/_testcapi/pytime.c
+++ b/Modules/_testinternalcapi/pytime.c
@@ -1,9 +1,14 @@
+/* Test pycore_time.h */
+
 #include "parts.h"
 
+#include "pycore_time.h"
+
 #ifdef MS_WINDOWS
-#  include <winsock2.h>           // struct timeval
+#  include <winsock2.h>          // struct timeval
 #endif
 
+
 static PyObject *
 test_pytime_fromseconds(PyObject *self, PyObject *args)
 {
@@ -196,7 +201,7 @@ test_pytime_object_to_time_t(PyObject *self, PyObject *args)
     PyObject *obj;
     time_t sec;
     int round;
-    if (!PyArg_ParseTuple(args, "Oi:pytime_object_to_time_t", &obj, &round)) {
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
         return NULL;
     }
     if (check_time_rounding(round) < 0) {
@@ -215,7 +220,7 @@ test_pytime_object_to_timeval(PyObject *self, PyObject *args)
     time_t sec;
     long usec;
     int round;
-    if (!PyArg_ParseTuple(args, "Oi:pytime_object_to_timeval", &obj, &round)) {
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
         return NULL;
     }
     if (check_time_rounding(round) < 0) {
@@ -234,7 +239,7 @@ test_pytime_object_to_timespec(PyObject *self, PyObject *args)
     time_t sec;
     long nsec;
     int round;
-    if (!PyArg_ParseTuple(args, "Oi:pytime_object_to_timespec", &obj, &round)) {
+    if (!PyArg_ParseTuple(args, "Oi", &obj, &round)) {
         return NULL;
     }
     if (check_time_rounding(round) < 0) {
@@ -246,28 +251,28 @@ test_pytime_object_to_timespec(PyObject *self, PyObject *args)
     return Py_BuildValue("Nl", _PyLong_FromTime_t(sec), nsec);
 }
 
-static PyMethodDef test_methods[] = {
-    {"PyTime_AsMicroseconds",       test_PyTime_AsMicroseconds,     METH_VARARGS},
-    {"PyTime_AsMilliseconds",       test_PyTime_AsMilliseconds,     METH_VARARGS},
-    {"PyTime_AsSecondsDouble",      test_pytime_assecondsdouble,    METH_VARARGS},
+static PyMethodDef TestMethods[] = {
+    {"_PyTime_AsMicroseconds",    test_PyTime_AsMicroseconds,     METH_VARARGS},
+    {"_PyTime_AsMilliseconds",    test_PyTime_AsMilliseconds,     METH_VARARGS},
+    {"_PyTime_AsSecondsDouble",   test_pytime_assecondsdouble,    METH_VARARGS},
 #ifdef HAVE_CLOCK_GETTIME
-    {"PyTime_AsTimespec",           test_PyTime_AsTimespec,         METH_VARARGS},
-    {"PyTime_AsTimespec_clamp",     test_PyTime_AsTimespec_clamp,   METH_VARARGS},
+    {"_PyTime_AsTimespec",        test_PyTime_AsTimespec,         METH_VARARGS},
+    {"_PyTime_AsTimespec_clamp",  test_PyTime_AsTimespec_clamp,   METH_VARARGS},
 #endif
-    {"PyTime_AsTimeval",            test_PyTime_AsTimeval,          METH_VARARGS},
-    {"PyTime_AsTimeval_clamp",      test_PyTime_AsTimeval_clamp,    METH_VARARGS},
-    {"PyTime_FromSeconds",          test_pytime_fromseconds,        METH_VARARGS},
-    {"PyTime_FromSecondsObject",    test_pytime_fromsecondsobject,  METH_VARARGS},
-    {"pytime_object_to_time_t",     test_pytime_object_to_time_t,   METH_VARARGS},
-    {"pytime_object_to_timespec",   test_pytime_object_to_timespec, METH_VARARGS},
-    {"pytime_object_to_timeval",    test_pytime_object_to_timeval,  METH_VARARGS},
-    {NULL},
+    {"_PyTime_AsTimeval",         test_PyTime_AsTimeval,          METH_VARARGS},
+    {"_PyTime_AsTimeval_clamp",   test_PyTime_AsTimeval_clamp,    METH_VARARGS},
+    {"_PyTime_FromSeconds",       test_pytime_fromseconds,        METH_VARARGS},
+    {"_PyTime_FromSecondsObject", test_pytime_fromsecondsobject,  METH_VARARGS},
+    {"_PyTime_ObjectToTime_t",    test_pytime_object_to_time_t,   METH_VARARGS},
+    {"_PyTime_ObjectToTimespec",  test_pytime_object_to_timespec, METH_VARARGS},
+    {"_PyTime_ObjectToTimeval",   test_pytime_object_to_timeval,  METH_VARARGS},
+    {NULL, NULL} /* sentinel */
 };
 
 int
-_PyTestCapi_Init_PyTime(PyObject *mod)
+_PyTestInternalCapi_Init_PyTime(PyObject *m)
 {
-    if (PyModule_AddFunctions(mod, test_methods) < 0) {
+    if (PyModule_AddFunctions(m, TestMethods) < 0) {
         return -1;
     }
     return 0;
diff --git a/Modules/_testinternalcapi/set.c b/Modules/_testinternalcapi/set.c
new file mode 100644
index 00000000000000..0305a7885d217c
--- /dev/null
+++ b/Modules/_testinternalcapi/set.c
@@ -0,0 +1,59 @@
+#include "parts.h"
+#include "../_testcapi/util.h"  // NULLABLE, RETURN_INT
+
+#include "pycore_setobject.h"
+
+
+static PyObject *
+set_update(PyObject *self, PyObject *args)
+{
+    PyObject *set, *iterable;
+    if (!PyArg_ParseTuple(args, "OO", &set, &iterable)) {
+        return NULL;
+    }
+    NULLABLE(set);
+    NULLABLE(iterable);
+    RETURN_INT(_PySet_Update(set, iterable));
+}
+
+static PyObject *
+set_next_entry(PyObject *self, PyObject *args)
+{
+    int rc;
+    Py_ssize_t pos;
+    Py_hash_t hash = (Py_hash_t)UNINITIALIZED_SIZE;
+    PyObject *set, *item = UNINITIALIZED_PTR;
+    if (!PyArg_ParseTuple(args, "On", &set, &pos)) {
+        return NULL;
+    }
+    NULLABLE(set);
+
+    rc = _PySet_NextEntry(set, &pos, &item, &hash);
+    if (rc == 1) {
+        return Py_BuildValue("innO", rc, pos, hash, item);
+    }
+    assert(item == UNINITIALIZED_PTR);
+    assert(hash == (Py_hash_t)UNINITIALIZED_SIZE);
+    if (rc == -1) {
+        return NULL;
+    }
+    assert(rc == 0);
+    Py_RETURN_NONE;
+}
+
+
+static PyMethodDef TestMethods[] = {
+    {"set_update", set_update, METH_VARARGS},
+    {"set_next_entry", set_next_entry, METH_VARARGS},
+
+    {NULL},
+};
+
+int
+_PyTestInternalCapi_Init_Set(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, TestMethods) < 0) {
+        return -1;
+    }
+    return 0;
+}
diff --git a/Modules/_testinternalcapi/test_critical_sections.c b/Modules/_testinternalcapi/test_critical_sections.c
new file mode 100644
index 00000000000000..1f7e311558b27c
--- /dev/null
+++ b/Modules/_testinternalcapi/test_critical_sections.c
@@ -0,0 +1,217 @@
+/*
+ * C Extension module to test pycore_critical_section.h API.
+ */
+
+#include "parts.h"
+
+#include "pycore_critical_section.h"
+
+#ifdef Py_GIL_DISABLED
+#define assert_nogil assert
+#define assert_gil(x)
+#else
+#define assert_gil assert
+#define assert_nogil(x)
+#endif
+
+
+static PyObject *
+test_critical_sections(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyObject *d1 = PyDict_New();
+    assert(d1 != NULL);
+
+    PyObject *d2 = PyDict_New();
+    assert(d2 != NULL);
+
+    // Beginning a critical section should lock the associated object and
+    // push the critical section onto the thread's stack (in Py_GIL_DISABLED builds).
+    Py_BEGIN_CRITICAL_SECTION(d1);
+    assert_nogil(PyMutex_IsLocked(&d1->ob_mutex));
+    assert_nogil(_PyCriticalSection_IsActive(PyThreadState_GET()->critical_section));
+    assert_gil(PyThreadState_GET()->critical_section == 0);
+    Py_END_CRITICAL_SECTION();
+    assert_nogil(!PyMutex_IsLocked(&d1->ob_mutex));
+
+    assert_nogil(!PyMutex_IsLocked(&d1->ob_mutex));
+    assert_nogil(!PyMutex_IsLocked(&d2->ob_mutex));
+    Py_BEGIN_CRITICAL_SECTION2(d1, d2);
+    assert_nogil(PyMutex_IsLocked(&d1->ob_mutex));
+    assert_nogil(PyMutex_IsLocked(&d2->ob_mutex));
+    Py_END_CRITICAL_SECTION2();
+    assert_nogil(!PyMutex_IsLocked(&d1->ob_mutex));
+    assert_nogil(!PyMutex_IsLocked(&d2->ob_mutex));
+
+    // Passing the same object twice should work (and not deadlock).
+    assert_nogil(!PyMutex_IsLocked(&d2->ob_mutex));
+    Py_BEGIN_CRITICAL_SECTION2(d2, d2);
+    assert_nogil(PyMutex_IsLocked(&d2->ob_mutex));
+    Py_END_CRITICAL_SECTION2();
+    assert_nogil(!PyMutex_IsLocked(&d2->ob_mutex));
+
+    Py_DECREF(d2);
+    Py_DECREF(d1);
+    Py_RETURN_NONE;
+}
+
+static void
+lock_unlock_object(PyObject *obj, int recurse_depth)
+{
+    Py_BEGIN_CRITICAL_SECTION(obj);
+    if (recurse_depth > 0) {
+        lock_unlock_object(obj, recurse_depth - 1);
+    }
+    Py_END_CRITICAL_SECTION();
+}
+
+static void
+lock_unlock_two_objects(PyObject *a, PyObject *b, int recurse_depth)
+{
+    Py_BEGIN_CRITICAL_SECTION2(a, b);
+    if (recurse_depth > 0) {
+        lock_unlock_two_objects(a, b, recurse_depth - 1);
+    }
+    Py_END_CRITICAL_SECTION2();
+}
+
+
+// Test that nested critical sections do not deadlock if they attempt to lock
+// the same object.
+static PyObject *
+test_critical_sections_nest(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyObject *a = PyDict_New();
+    assert(a != NULL);
+    PyObject *b = PyDict_New();
+    assert(b != NULL);
+
+    // Locking an object recursively with this API should not deadlock.
+    assert_nogil(!PyMutex_IsLocked(&a->ob_mutex));
+    Py_BEGIN_CRITICAL_SECTION(a);
+    assert_nogil(PyMutex_IsLocked(&a->ob_mutex));
+    lock_unlock_object(a, 10);
+    assert_nogil(PyMutex_IsLocked(&a->ob_mutex));
+    Py_END_CRITICAL_SECTION();
+    assert_nogil(!PyMutex_IsLocked(&a->ob_mutex));
+
+    // Same test but with two objects.
+    Py_BEGIN_CRITICAL_SECTION2(b, a);
+    lock_unlock_two_objects(a, b, 10);
+    assert_nogil(PyMutex_IsLocked(&a->ob_mutex));
+    assert_nogil(PyMutex_IsLocked(&b->ob_mutex));
+    Py_END_CRITICAL_SECTION2();
+
+    Py_DECREF(b);
+    Py_DECREF(a);
+    Py_RETURN_NONE;
+}
+
+// Test that a critical section is suspended by a Py_BEGIN_ALLOW_THREADS and
+// resumed by a Py_END_ALLOW_THREADS.
+static PyObject *
+test_critical_sections_suspend(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyObject *a = PyDict_New();
+    assert(a != NULL);
+
+    Py_BEGIN_CRITICAL_SECTION(a);
+    assert_nogil(PyMutex_IsLocked(&a->ob_mutex));
+
+    // Py_BEGIN_ALLOW_THREADS should suspend the active critical section
+    Py_BEGIN_ALLOW_THREADS
+    assert_nogil(!PyMutex_IsLocked(&a->ob_mutex));
+    Py_END_ALLOW_THREADS;
+
+    // After Py_END_ALLOW_THREADS the critical section should be resumed.
+    assert_nogil(PyMutex_IsLocked(&a->ob_mutex));
+    Py_END_CRITICAL_SECTION();
+
+    Py_DECREF(a);
+    Py_RETURN_NONE;
+}
+
+struct test_data {
+    PyObject *obj1;
+    PyObject *obj2;
+    PyObject *obj3;
+    Py_ssize_t countdown;
+    PyEvent done_event;
+};
+
+static void
+thread_critical_sections(void *arg)
+{
+    const Py_ssize_t NUM_ITERS = 200;
+    struct test_data *test_data = arg;
+    PyGILState_STATE gil = PyGILState_Ensure();
+
+    for (Py_ssize_t i = 0; i < NUM_ITERS; i++) {
+        Py_BEGIN_CRITICAL_SECTION(test_data->obj1);
+        Py_END_CRITICAL_SECTION();
+
+        Py_BEGIN_CRITICAL_SECTION(test_data->obj2);
+        lock_unlock_object(test_data->obj1, 1);
+        Py_END_CRITICAL_SECTION();
+
+        Py_BEGIN_CRITICAL_SECTION2(test_data->obj3, test_data->obj1);
+        lock_unlock_object(test_data->obj2, 2);
+        Py_END_CRITICAL_SECTION2();
+
+        Py_BEGIN_CRITICAL_SECTION(test_data->obj3);
+        Py_BEGIN_ALLOW_THREADS
+        Py_END_ALLOW_THREADS
+        Py_END_CRITICAL_SECTION();
+    }
+
+    PyGILState_Release(gil);
+    if (_Py_atomic_add_ssize(&test_data->countdown, -1) == 1) {
+        // last thread to finish sets done_event
+        _PyEvent_Notify(&test_data->done_event);
+    }
+}
+
+#ifdef Py_CAN_START_THREADS
+static PyObject *
+test_critical_sections_threads(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    const Py_ssize_t NUM_THREADS = 4;
+    struct test_data test_data = {
+        .obj1 = PyDict_New(),
+        .obj2 = PyDict_New(),
+        .obj3 = PyDict_New(),
+        .countdown = NUM_THREADS,
+    };
+    assert(test_data.obj1 != NULL);
+    assert(test_data.obj2 != NULL);
+    assert(test_data.obj3 != NULL);
+
+    for (int i = 0; i < NUM_THREADS; i++) {
+        PyThread_start_new_thread(&thread_critical_sections, &test_data);
+    }
+    PyEvent_Wait(&test_data.done_event);
+
+    Py_DECREF(test_data.obj3);
+    Py_DECREF(test_data.obj2);
+    Py_DECREF(test_data.obj1);
+    Py_RETURN_NONE;
+}
+#endif
+
+static PyMethodDef test_methods[] = {
+    {"test_critical_sections", test_critical_sections, METH_NOARGS},
+    {"test_critical_sections_nest", test_critical_sections_nest, METH_NOARGS},
+    {"test_critical_sections_suspend", test_critical_sections_suspend, METH_NOARGS},
+#ifdef Py_CAN_START_THREADS
+    {"test_critical_sections_threads", test_critical_sections_threads, METH_NOARGS},
+#endif
+    {NULL, NULL} /* sentinel */
+};
+
+int
+_PyTestInternalCapi_Init_CriticalSection(PyObject *mod)
+{
+    if (PyModule_AddFunctions(mod, test_methods) < 0) {
+        return -1;
+    }
+    return 0;
+}
diff --git a/Modules/_testinternalcapi/test_lock.c b/Modules/_testinternalcapi/test_lock.c
new file mode 100644
index 00000000000000..418f71c1441995
--- /dev/null
+++ b/Modules/_testinternalcapi/test_lock.c
@@ -0,0 +1,393 @@
+// C Extension module to test pycore_lock.h API
+
+#include "parts.h"
+
+#include "pycore_lock.h"
+#include "clinic/test_lock.c.h"
+
+#ifdef MS_WINDOWS
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#else
+#include <unistd.h>         // usleep()
+#endif
+
+/*[clinic input]
+module _testinternalcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=7bb583d8c9eb9a78]*/
+
+
+static void
+pysleep(int ms)
+{
+#ifdef MS_WINDOWS
+    Sleep(ms);
+#else
+    usleep(ms * 1000);
+#endif
+}
+
+static PyObject *
+test_lock_basic(PyObject *self, PyObject *obj)
+{
+    PyMutex m = (PyMutex){0};
+
+    // uncontended lock and unlock
+    PyMutex_Lock(&m);
+    assert(m.v == 1);
+    PyMutex_Unlock(&m);
+    assert(m.v == 0);
+
+    Py_RETURN_NONE;
+}
+
+struct test_lock2_data {
+    PyMutex m;
+    PyEvent done;
+    int started;
+};
+
+static void
+lock_thread(void *arg)
+{
+    struct test_lock2_data *test_data = arg;
+    PyMutex *m = &test_data->m;
+    _Py_atomic_store_int(&test_data->started, 1);
+
+    PyMutex_Lock(m);
+    assert(m->v == 1);
+
+    PyMutex_Unlock(m);
+    assert(m->v == 0);
+
+    _PyEvent_Notify(&test_data->done);
+}
+
+static PyObject *
+test_lock_two_threads(PyObject *self, PyObject *obj)
+{
+    // lock attempt by two threads
+    struct test_lock2_data test_data;
+    memset(&test_data, 0, sizeof(test_data));
+
+    PyMutex_Lock(&test_data.m);
+    assert(test_data.m.v == 1);
+
+    PyThread_start_new_thread(lock_thread, &test_data);
+
+    // wait up to two seconds for the lock_thread to attempt to lock "m"
+    int iters = 0;
+    uint8_t v;
+    do {
+        pysleep(10);  // allow some time for the other thread to try to lock
+        v = _Py_atomic_load_uint8_relaxed(&test_data.m.v);
+        assert(v == 1 || v == 3);
+        iters++;
+    } while (v != 3 && iters < 200);
+
+    // both the "locked" and the "has parked" bits should be set
+    assert(test_data.m.v == 3);
+
+    PyMutex_Unlock(&test_data.m);
+    PyEvent_Wait(&test_data.done);
+    assert(test_data.m.v == 0);
+
+    Py_RETURN_NONE;
+}
+
+#define COUNTER_THREADS 5
+#define COUNTER_ITERS 10000
+
+struct test_data_counter {
+    PyMutex m;
+    Py_ssize_t counter;
+};
+
+struct thread_data_counter {
+    struct test_data_counter *test_data;
+    PyEvent done_event;
+};
+
+static void
+counter_thread(void *arg)
+{
+    struct thread_data_counter *thread_data = arg;
+    struct test_data_counter *test_data = thread_data->test_data;
+
+    for (Py_ssize_t i = 0; i < COUNTER_ITERS; i++) {
+        PyMutex_Lock(&test_data->m);
+        test_data->counter++;
+        PyMutex_Unlock(&test_data->m);
+    }
+    _PyEvent_Notify(&thread_data->done_event);
+}
+
+static PyObject *
+test_lock_counter(PyObject *self, PyObject *obj)
+{
+    // Test with rapidly locking and unlocking mutex
+    struct test_data_counter test_data;
+    memset(&test_data, 0, sizeof(test_data));
+
+    struct thread_data_counter thread_data[COUNTER_THREADS];
+    memset(&thread_data, 0, sizeof(thread_data));
+
+    for (Py_ssize_t i = 0; i < COUNTER_THREADS; i++) {
+        thread_data[i].test_data = &test_data;
+        PyThread_start_new_thread(counter_thread, &thread_data[i]);
+    }
+
+    for (Py_ssize_t i = 0; i < COUNTER_THREADS; i++) {
+        PyEvent_Wait(&thread_data[i].done_event);
+    }
+
+    assert(test_data.counter == COUNTER_THREADS * COUNTER_ITERS);
+    Py_RETURN_NONE;
+}
+
+#define SLOW_COUNTER_ITERS 100
+
+static void
+slow_counter_thread(void *arg)
+{
+    struct thread_data_counter *thread_data = arg;
+    struct test_data_counter *test_data = thread_data->test_data;
+
+    for (Py_ssize_t i = 0; i < SLOW_COUNTER_ITERS; i++) {
+        PyMutex_Lock(&test_data->m);
+        if (i % 7 == 0) {
+            pysleep(2);
+        }
+        test_data->counter++;
+        PyMutex_Unlock(&test_data->m);
+    }
+    _PyEvent_Notify(&thread_data->done_event);
+}
+
+static PyObject *
+test_lock_counter_slow(PyObject *self, PyObject *obj)
+{
+    // Test lock/unlock with occasional "long" critical section, which will
+    // trigger handoff of the lock.
+    struct test_data_counter test_data;
+    memset(&test_data, 0, sizeof(test_data));
+
+    struct thread_data_counter thread_data[COUNTER_THREADS];
+    memset(&thread_data, 0, sizeof(thread_data));
+
+    for (Py_ssize_t i = 0; i < COUNTER_THREADS; i++) {
+        thread_data[i].test_data = &test_data;
+        PyThread_start_new_thread(slow_counter_thread, &thread_data[i]);
+    }
+
+    for (Py_ssize_t i = 0; i < COUNTER_THREADS; i++) {
+        PyEvent_Wait(&thread_data[i].done_event);
+    }
+
+    assert(test_data.counter == COUNTER_THREADS * SLOW_COUNTER_ITERS);
+    Py_RETURN_NONE;
+}
+
+struct bench_data_locks {
+    int stop;
+    int use_pymutex;
+    int critical_section_length;
+    char padding[200];
+    PyThread_type_lock lock;
+    PyMutex m;
+    double value;
+    Py_ssize_t total_iters;
+};
+
+struct bench_thread_data {
+    struct bench_data_locks *bench_data;
+    Py_ssize_t iters;
+    PyEvent done;
+};
+
+static void
+thread_benchmark_locks(void *arg)
+{
+    struct bench_thread_data *thread_data = arg;
+    struct bench_data_locks *bench_data = thread_data->bench_data;
+    int use_pymutex = bench_data->use_pymutex;
+    int critical_section_length = bench_data->critical_section_length;
+
+    double my_value = 1.0;
+    Py_ssize_t iters = 0;
+    while (!_Py_atomic_load_int_relaxed(&bench_data->stop)) {
+        if (use_pymutex) {
+            PyMutex_Lock(&bench_data->m);
+            for (int i = 0; i < critical_section_length; i++) {
+                bench_data->value += my_value;
+                my_value = bench_data->value;
+            }
+            PyMutex_Unlock(&bench_data->m);
+        }
+        else {
+            PyThread_acquire_lock(bench_data->lock, 1);
+            for (int i = 0; i < critical_section_length; i++) {
+                bench_data->value += my_value;
+                my_value = bench_data->value;
+            }
+            PyThread_release_lock(bench_data->lock);
+        }
+        iters++;
+    }
+
+    thread_data->iters = iters;
+    _Py_atomic_add_ssize(&bench_data->total_iters, iters);
+    _PyEvent_Notify(&thread_data->done);
+}
+
+/*[clinic input]
+_testinternalcapi.benchmark_locks
+
+    num_threads: Py_ssize_t
+    use_pymutex: bool = True
+    critical_section_length: int = 1
+    time_ms: int = 1000
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+_testinternalcapi_benchmark_locks_impl(PyObject *module,
+                                       Py_ssize_t num_threads,
+                                       int use_pymutex,
+                                       int critical_section_length,
+                                       int time_ms)
+/*[clinic end generated code: output=381df8d7e9a74f18 input=f3aeaf688738c121]*/
+{
+    // Run from Tools/lockbench/lockbench.py
+    // Based on the WebKit lock benchmarks:
+    // https://github.com/WebKit/WebKit/blob/main/Source/WTF/benchmarks/LockSpeedTest.cpp
+    // See also https://webkit.org/blog/6161/locking-in-webkit/
+    PyObject *thread_iters = NULL;
+    PyObject *res = NULL;
+
+    struct bench_data_locks bench_data;
+    memset(&bench_data, 0, sizeof(bench_data));
+    bench_data.use_pymutex = use_pymutex;
+    bench_data.critical_section_length = critical_section_length;
+
+    bench_data.lock = PyThread_allocate_lock();
+    if (bench_data.lock == NULL) {
+        return PyErr_NoMemory();
+    }
+
+    struct bench_thread_data *thread_data = NULL;
+    thread_data = PyMem_Calloc(num_threads, sizeof(*thread_data));
+    if (thread_data == NULL) {
+        PyErr_NoMemory();
+        goto exit;
+    }
+
+    thread_iters = PyList_New(num_threads);
+    if (thread_iters == NULL) {
+        goto exit;
+    }
+
+    _PyTime_t start = _PyTime_GetMonotonicClock();
+
+    for (Py_ssize_t i = 0; i < num_threads; i++) {
+        thread_data[i].bench_data = &bench_data;
+        PyThread_start_new_thread(thread_benchmark_locks, &thread_data[i]);
+    }
+
+    // Let the threads run for `time_ms` milliseconds
+    pysleep(time_ms);
+    _Py_atomic_store_int(&bench_data.stop, 1);
+
+    // Wait for the threads to finish
+    for (Py_ssize_t i = 0; i < num_threads; i++) {
+        PyEvent_Wait(&thread_data[i].done);
+    }
+
+    Py_ssize_t total_iters = bench_data.total_iters;
+    _PyTime_t end = _PyTime_GetMonotonicClock();
+
+    // Return the total number of acquisitions and the number of acquisitions
+    // for each thread.
+    for (Py_ssize_t i = 0; i < num_threads; i++) {
+        PyObject *iter = PyLong_FromSsize_t(thread_data[i].iters);
+        if (iter == NULL) {
+            goto exit;
+        }
+        PyList_SET_ITEM(thread_iters, i, iter);
+    }
+
+    double rate = total_iters * 1000000000.0 / (end - start);
+    res = Py_BuildValue("(dO)", rate, thread_iters);
+
+exit:
+    PyThread_free_lock(bench_data.lock);
+    PyMem_Free(thread_data);
+    Py_XDECREF(thread_iters);
+    return res;
+}
+
+static PyObject *
+test_lock_benchmark(PyObject *module, PyObject *obj)
+{
+    // Just make sure the benchmark runs without crashing
+    PyObject *res = _testinternalcapi_benchmark_locks_impl(
+        module, 1, 1, 1, 100);
+    if (res == NULL) {
+        return NULL;
+    }
+    Py_DECREF(res);
+    Py_RETURN_NONE;
+}
+
+static int
+init_maybe_fail(void *arg)
+{
+    int *counter = (int *)arg;
+    (*counter)++;
+    if (*counter < 5) {
+        // failure
+        return -1;
+    }
+    assert(*counter == 5);
+    return 0;
+}
+
+static PyObject *
+test_lock_once(PyObject *self, PyObject *obj)
+{
+    _PyOnceFlag once = {0};
+    int counter = 0;
+    for (int i = 0; i < 10; i++) {
+        int res = _PyOnceFlag_CallOnce(&once, init_maybe_fail, &counter);
+        if (i < 4) {
+            assert(res == -1);
+        }
+        else {
+            assert(res == 0);
+            assert(counter == 5);
+        }
+    }
+    Py_RETURN_NONE;
+}
+
+static PyMethodDef test_methods[] = {
+    {"test_lock_basic", test_lock_basic, METH_NOARGS},
+    {"test_lock_two_threads", test_lock_two_threads, METH_NOARGS},
+    {"test_lock_counter", test_lock_counter, METH_NOARGS},
+    {"test_lock_counter_slow", test_lock_counter_slow, METH_NOARGS},
+    _TESTINTERNALCAPI_BENCHMARK_LOCKS_METHODDEF
+    {"test_lock_benchmark", test_lock_benchmark, METH_NOARGS},
+    {"test_lock_once", test_lock_once, METH_NOARGS},
+    {NULL, NULL} /* sentinel */
+};
+
+int
+_PyTestInternalCapi_Init_Lock(PyObject *mod)
+{
+    if (PyModule_AddFunctions(mod, test_methods) < 0) {
+        return -1;
+    }
+    return 0;
+}
diff --git a/Modules/_testmultiphase.c b/Modules/_testmultiphase.c
index ca71b6156b005d..21c5f696a4f2ec 100644
--- a/Modules/_testmultiphase.c
+++ b/Modules/_testmultiphase.c
@@ -6,6 +6,7 @@
 #endif
 
 #include "Python.h"
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 #include "pycore_namespace.h"     // _PyNamespace_New()
 
 /* State for testing module state access from methods */
@@ -383,32 +384,20 @@ static int execfunc(PyObject *m)
 
     /* Add a custom type */
     temp = PyType_FromSpec(&Example_Type_spec);
-    if (temp == NULL) {
-        goto fail;
-    }
-    if (PyModule_AddObject(m, "Example", temp) != 0) {
-        Py_DECREF(temp);
+    if (PyModule_Add(m, "Example", temp) != 0) {
         goto fail;
     }
 
 
     /* Add an exception type */
     temp = PyErr_NewException("_testimportexec.error", NULL, NULL);
-    if (temp == NULL) {
-        goto fail;
-    }
-    if (PyModule_AddObject(m, "error", temp) != 0) {
-        Py_DECREF(temp);
+    if (PyModule_Add(m, "error", temp) != 0) {
         goto fail;
     }
 
     /* Add Str */
     temp = PyType_FromSpec(&Str_Type_spec);
-    if (temp == NULL) {
-        goto fail;
-    }
-    if (PyModule_AddObject(m, "Str", temp) != 0) {
-        Py_DECREF(temp);
+    if (PyModule_Add(m, "Str", temp) != 0) {
         goto fail;
     }
 
@@ -857,11 +846,7 @@ meth_state_access_exec(PyObject *m)
     }
 
     temp = PyType_FromModuleAndSpec(m, &StateAccessType_spec, NULL);
-    if (temp == NULL) {
-        return -1;
-    }
-    if (PyModule_AddObject(m, "StateAccessType", temp) != 0) {
-        Py_DECREF(temp);
+    if (PyModule_Add(m, "StateAccessType", temp) != 0) {
         return -1;
     }
 
diff --git a/Modules/_testsinglephase.c b/Modules/_testsinglephase.c
index a16157702ae789..c42a15a0eff494 100644
--- a/Modules/_testsinglephase.c
+++ b/Modules/_testsinglephase.c
@@ -8,6 +8,7 @@
 //#include <time.h>
 #include "Python.h"
 #include "pycore_namespace.h"     // _PyNamespace_New()
+#include "pycore_time.h"          // _PyTime_t
 
 
 typedef struct {
@@ -136,11 +137,7 @@ init_module(PyObject *module, module_state *state)
     }
 
     double d = _PyTime_AsSecondsDouble(state->initialized);
-    PyObject *initialized = PyFloat_FromDouble(d);
-    if (initialized == NULL) {
-        return -1;
-    }
-    if (PyModule_AddObjectRef(module, "_module_initialized", initialized) != 0) {
+    if (PyModule_Add(module, "_module_initialized", PyFloat_FromDouble(d)) < 0) {
         return -1;
     }
 
@@ -246,6 +243,25 @@ basic__clear_globals(PyObject *self, PyObject *Py_UNUSED(ignored))
      basic__clear_globals_doc}
 
 
+PyDoc_STRVAR(basic__clear_module_state_doc, "_clear_module_state()\n\
+\n\
+Free the module state and set it to uninitialized.");
+
+static PyObject *
+basic__clear_module_state(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    module_state *state = get_module_state(self);
+    if (state != NULL) {
+        clear_state(state);
+    }
+    Py_RETURN_NONE;
+}
+
+#define _CLEAR_MODULE_STATE_METHODDEF \
+    {"_clear_module_state", basic__clear_module_state, METH_NOARGS, \
+     basic__clear_module_state_doc}
+
+
 /*********************************************/
 /* the _testsinglephase module (and aliases) */
 /*********************************************/
@@ -406,7 +422,7 @@ PyInit__testsinglephase_with_reinit(void)
 /* the _testsinglephase_with_state module */
 /******************************************/
 
-/* This ia less typical of legacy extensions in the wild:
+/* This is less typical of legacy extensions in the wild:
    - single-phase init  (same as _testsinglephase above)
    - has some module state
    - supports repeated initialization
@@ -422,6 +438,7 @@ static PyMethodDef TestMethods_WithState[] = {
     LOOK_UP_SELF_METHODDEF,
     SUM_METHODDEF,
     STATE_INITIALIZED_METHODDEF,
+    _CLEAR_MODULE_STATE_METHODDEF,
     {NULL, NULL}           /* sentinel */
 };
 
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index 5d753b4a0ebc5e..afcf646e3bc19e 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -7,9 +7,10 @@
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_pylifecycle.h"
 #include "pycore_pystate.h"       // _PyThreadState_SetCurrent()
-#include <stddef.h>               // offsetof()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
 
+#include <stddef.h>               // offsetof()
 #ifdef HAVE_SIGNAL_H
 #  include <signal.h>             // SIGINT
 #endif
@@ -21,12 +22,13 @@
 // Forward declarations
 static struct PyModuleDef thread_module;
 
-
+// Module state
 typedef struct {
     PyTypeObject *excepthook_type;
     PyTypeObject *lock_type;
     PyTypeObject *local_type;
     PyTypeObject *local_dummy_type;
+    PyTypeObject *thread_handle_type;
 } thread_module_state;
 
 static inline thread_module_state*
@@ -37,6 +39,145 @@ get_thread_state(PyObject *module)
     return (thread_module_state *)state;
 }
 
+// _ThreadHandle type
+
+typedef struct {
+    PyObject_HEAD
+    PyThread_ident_t ident;
+    PyThread_handle_t handle;
+    char joinable;
+} ThreadHandleObject;
+
+static ThreadHandleObject*
+new_thread_handle(thread_module_state* state)
+{
+    ThreadHandleObject* self = PyObject_New(ThreadHandleObject, state->thread_handle_type);
+    if (self == NULL) {
+        return NULL;
+    }
+    self->ident = 0;
+    self->handle = 0;
+    self->joinable = 0;
+    return self;
+}
+
+static void
+ThreadHandle_dealloc(ThreadHandleObject *self)
+{
+    PyObject *tp = (PyObject *) Py_TYPE(self);
+    if (self->joinable) {
+        int ret = PyThread_detach_thread(self->handle);
+        if (ret) {
+            PyErr_SetString(ThreadError, "Failed detaching thread");
+            PyErr_WriteUnraisable(tp);
+        }
+    }
+    PyObject_Free(self);
+    Py_DECREF(tp);
+}
+
+static PyObject *
+ThreadHandle_repr(ThreadHandleObject *self)
+{
+    return PyUnicode_FromFormat("<%s object: ident=%" PY_FORMAT_THREAD_IDENT_T ">",
+                                Py_TYPE(self)->tp_name, self->ident);
+}
+
+static PyObject *
+ThreadHandle_get_ident(ThreadHandleObject *self, void *ignored)
+{
+    return PyLong_FromUnsignedLongLong(self->ident);
+}
+
+
+static PyObject *
+ThreadHandle_after_fork_alive(ThreadHandleObject *self, void* ignored)
+{
+    PyThread_update_thread_after_fork(&self->ident, &self->handle);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+ThreadHandle_after_fork_dead(ThreadHandleObject *self, void* ignored)
+{
+    // Disallow calls to detach() and join() as they could crash.
+    self->joinable = 0;
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+ThreadHandle_detach(ThreadHandleObject *self, void* ignored)
+{
+    if (!self->joinable) {
+        PyErr_SetString(PyExc_ValueError,
+                        "the thread is not joinable and thus cannot be detached");
+        return NULL;
+    }
+    self->joinable = 0;
+    // This is typically short so no need to release the GIL
+    int ret = PyThread_detach_thread(self->handle);
+    if (ret) {
+        PyErr_SetString(ThreadError, "Failed detaching thread");
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+ThreadHandle_join(ThreadHandleObject *self, void* ignored)
+{
+    if (!self->joinable) {
+        PyErr_SetString(PyExc_ValueError, "the thread is not joinable");
+        return NULL;
+    }
+    if (self->ident == PyThread_get_thread_ident_ex()) {
+        // PyThread_join_thread() would deadlock or error out.
+        PyErr_SetString(ThreadError, "Cannot join current thread");
+        return NULL;
+    }
+    // Before actually joining, we must first mark the thread as non-joinable,
+    // as joining several times simultaneously or sequentially is undefined behavior.
+    self->joinable = 0;
+    int ret;
+    Py_BEGIN_ALLOW_THREADS
+    ret = PyThread_join_thread(self->handle);
+    Py_END_ALLOW_THREADS
+    if (ret) {
+        PyErr_SetString(ThreadError, "Failed joining thread");
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+static PyGetSetDef ThreadHandle_getsetlist[] = {
+    {"ident", (getter)ThreadHandle_get_ident, NULL, NULL},
+    {0},
+};
+
+static PyMethodDef ThreadHandle_methods[] =
+{
+    {"after_fork_alive", (PyCFunction)ThreadHandle_after_fork_alive, METH_NOARGS},
+    {"after_fork_dead", (PyCFunction)ThreadHandle_after_fork_dead, METH_NOARGS},
+    {"detach", (PyCFunction)ThreadHandle_detach, METH_NOARGS},
+    {"join", (PyCFunction)ThreadHandle_join, METH_NOARGS},
+    {0, 0}
+};
+
+static PyType_Slot ThreadHandle_Type_slots[] = {
+    {Py_tp_dealloc, (destructor)ThreadHandle_dealloc},
+    {Py_tp_repr, (reprfunc)ThreadHandle_repr},
+    {Py_tp_getset, ThreadHandle_getsetlist},
+    {Py_tp_methods, ThreadHandle_methods},
+    {0, 0}
+};
+
+static PyType_Spec ThreadHandle_Type_spec = {
+    "_thread._ThreadHandle",
+    sizeof(ThreadHandleObject),
+    0,
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+    ThreadHandle_Type_slots,
+};
 
 /* Lock objects */
 
@@ -72,56 +213,10 @@ lock_dealloc(lockobject *self)
     Py_DECREF(tp);
 }
 
-/* Helper to acquire an interruptible lock with a timeout.  If the lock acquire
- * is interrupted, signal handlers are run, and if they raise an exception,
- * PY_LOCK_INTR is returned.  Otherwise, PY_LOCK_ACQUIRED or PY_LOCK_FAILURE
- * are returned, depending on whether the lock can be acquired within the
- * timeout.
- */
-static PyLockStatus
+static inline PyLockStatus
 acquire_timed(PyThread_type_lock lock, _PyTime_t timeout)
 {
-    _PyTime_t endtime = 0;
-    if (timeout > 0) {
-        endtime = _PyDeadline_Init(timeout);
-    }
-
-    PyLockStatus r;
-    do {
-        _PyTime_t microseconds;
-        microseconds = _PyTime_AsMicroseconds(timeout, _PyTime_ROUND_CEILING);
-
-        /* first a simple non-blocking try without releasing the GIL */
-        r = PyThread_acquire_lock_timed(lock, 0, 0);
-        if (r == PY_LOCK_FAILURE && microseconds != 0) {
-            Py_BEGIN_ALLOW_THREADS
-            r = PyThread_acquire_lock_timed(lock, microseconds, 1);
-            Py_END_ALLOW_THREADS
-        }
-
-        if (r == PY_LOCK_INTR) {
-            /* Run signal handlers if we were interrupted.  Propagate
-             * exceptions from signal handlers, such as KeyboardInterrupt, by
-             * passing up PY_LOCK_INTR.  */
-            if (Py_MakePendingCalls() < 0) {
-                return PY_LOCK_INTR;
-            }
-
-            /* If we're using a timeout, recompute the timeout after processing
-             * signals, since those can take time.  */
-            if (timeout > 0) {
-                timeout = _PyDeadline_Get(endtime);
-
-                /* Check for negative values, since those mean block forever.
-                 */
-                if (timeout < 0) {
-                    r = PY_LOCK_FAILURE;
-                }
-            }
-        }
-    } while (r == PY_LOCK_INTR);  /* Retry if we were interrupted. */
-
-    return r;
+    return PyThread_acquire_lock_timed_with_retries(lock, timeout);
 }
 
 static int
@@ -131,14 +226,15 @@ lock_acquire_parse_args(PyObject *args, PyObject *kwds,
     char *kwlist[] = {"blocking", "timeout", NULL};
     int blocking = 1;
     PyObject *timeout_obj = NULL;
-    const _PyTime_t unset_timeout = _PyTime_FromSeconds(-1);
-
-    *timeout = unset_timeout ;
-
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "|pO:acquire", kwlist,
                                      &blocking, &timeout_obj))
         return -1;
 
+    // XXX Use PyThread_ParseTimeoutArg().
+
+    const _PyTime_t unset_timeout = _PyTime_FromSeconds(-1);
+    *timeout = unset_timeout;
+
     if (timeout_obj
         && _PyTime_FromSecondsObject(timeout,
                                      timeout_obj, _PyTime_ROUND_TIMEOUT) < 0)
@@ -151,7 +247,7 @@ lock_acquire_parse_args(PyObject *args, PyObject *kwds,
     }
     if (*timeout < 0 && *timeout != unset_timeout) {
         PyErr_SetString(PyExc_ValueError,
-                        "timeout value must be positive");
+                        "timeout value must be a non-negative number");
         return -1;
     }
     if (!blocking)
@@ -291,7 +387,7 @@ unlock it.  A thread attempting to lock a lock that it has already locked\n\
 will block until another thread unlocks it.  Deadlocks may ensue.");
 
 static PyMemberDef lock_type_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(lockobject, in_weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(lockobject, in_weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -318,7 +414,7 @@ static PyType_Spec lock_type_spec = {
 typedef struct {
     PyObject_HEAD
     PyThread_type_lock rlock_lock;
-    unsigned long rlock_owner;
+    PyThread_ident_t rlock_owner;
     unsigned long rlock_count;
     PyObject *in_weakreflist;
 } rlockobject;
@@ -355,13 +451,13 @@ static PyObject *
 rlock_acquire(rlockobject *self, PyObject *args, PyObject *kwds)
 {
     _PyTime_t timeout;
-    unsigned long tid;
+    PyThread_ident_t tid;
     PyLockStatus r = PY_LOCK_ACQUIRED;
 
     if (lock_acquire_parse_args(args, kwds, &timeout) < 0)
         return NULL;
 
-    tid = PyThread_get_thread_ident();
+    tid = PyThread_get_thread_ident_ex();
     if (self->rlock_count > 0 && tid == self->rlock_owner) {
         unsigned long count = self->rlock_count + 1;
         if (count <= self->rlock_count) {
@@ -404,7 +500,7 @@ the lock is taken and its internal counter initialized to 1.");
 static PyObject *
 rlock_release(rlockobject *self, PyObject *Py_UNUSED(ignored))
 {
-    unsigned long tid = PyThread_get_thread_ident();
+    PyThread_ident_t tid = PyThread_get_thread_ident_ex();
 
     if (self->rlock_count == 0 || self->rlock_owner != tid) {
         PyErr_SetString(PyExc_RuntimeError,
@@ -433,11 +529,12 @@ to be available for other threads.");
 static PyObject *
 rlock_acquire_restore(rlockobject *self, PyObject *args)
 {
-    unsigned long owner;
+    PyThread_ident_t owner;
     unsigned long count;
     int r = 1;
 
-    if (!PyArg_ParseTuple(args, "(kk):_acquire_restore", &count, &owner))
+    if (!PyArg_ParseTuple(args, "(k" Py_PARSE_THREAD_IDENT_T "):_acquire_restore",
+            &count, &owner))
         return NULL;
 
     if (!PyThread_acquire_lock(self->rlock_lock, 0)) {
@@ -463,7 +560,7 @@ For internal use by `threading.Condition`.");
 static PyObject *
 rlock_release_save(rlockobject *self, PyObject *Py_UNUSED(ignored))
 {
-    unsigned long owner;
+    PyThread_ident_t owner;
     unsigned long count;
 
     if (self->rlock_count == 0) {
@@ -477,7 +574,7 @@ rlock_release_save(rlockobject *self, PyObject *Py_UNUSED(ignored))
     self->rlock_count = 0;
     self->rlock_owner = 0;
     PyThread_release_lock(self->rlock_lock);
-    return Py_BuildValue("kk", count, owner);
+    return Py_BuildValue("k" Py_PARSE_THREAD_IDENT_T, count, owner);
 }
 
 PyDoc_STRVAR(rlock_release_save_doc,
@@ -485,11 +582,23 @@ PyDoc_STRVAR(rlock_release_save_doc,
 \n\
 For internal use by `threading.Condition`.");
 
+static PyObject *
+rlock_recursion_count(rlockobject *self, PyObject *Py_UNUSED(ignored))
+{
+    PyThread_ident_t tid = PyThread_get_thread_ident_ex();
+    return PyLong_FromUnsignedLong(
+        self->rlock_owner == tid ? self->rlock_count : 0UL);
+}
+
+PyDoc_STRVAR(rlock_recursion_count_doc,
+"_recursion_count() -> int\n\
+\n\
+For internal use by reentrancy checks.");
 
 static PyObject *
 rlock_is_owned(rlockobject *self, PyObject *Py_UNUSED(ignored))
 {
-    unsigned long tid = PyThread_get_thread_ident();
+    PyThread_ident_t tid = PyThread_get_thread_ident_ex();
 
     if (self->rlock_count > 0 && self->rlock_owner == tid) {
         Py_RETURN_TRUE;
@@ -525,7 +634,8 @@ rlock_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 static PyObject *
 rlock_repr(rlockobject *self)
 {
-    return PyUnicode_FromFormat("<%s %s object owner=%ld count=%lu at %p>",
+    return PyUnicode_FromFormat(
+        "<%s %s object owner=%" PY_FORMAT_THREAD_IDENT_T " count=%lu at %p>",
         self->rlock_count ? "locked" : "unlocked",
         Py_TYPE(self)->tp_name, self->rlock_owner,
         self->rlock_count, self);
@@ -560,6 +670,8 @@ static PyMethodDef rlock_methods[] = {
      METH_VARARGS, rlock_acquire_restore_doc},
     {"_release_save", (PyCFunction)rlock_release_save,
      METH_NOARGS, rlock_release_save_doc},
+    {"_recursion_count", (PyCFunction)rlock_recursion_count,
+     METH_NOARGS, rlock_recursion_count_doc},
     {"__enter__",    _PyCFunction_CAST(rlock_acquire),
      METH_VARARGS | METH_KEYWORDS, rlock_acquire_doc},
     {"__exit__",    (PyCFunction)rlock_release,
@@ -573,7 +685,7 @@ static PyMethodDef rlock_methods[] = {
 
 
 static PyMemberDef rlock_type_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(rlockobject, in_weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(rlockobject, in_weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -677,7 +789,7 @@ localdummy_dealloc(localdummyobject *self)
 }
 
 static PyMemberDef local_dummy_type_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(localdummyobject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(localdummyobject, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -855,11 +967,8 @@ local_clear(localobject *self)
         HEAD_UNLOCK(runtime);
         while (tstate) {
             if (tstate->dict) {
-                PyObject *v = _PyDict_Pop(tstate->dict, self->key, Py_None);
-                if (v != NULL) {
-                    Py_DECREF(v);
-                }
-                else {
+                if (PyDict_Pop(tstate->dict, self->key, NULL) < 0) {
+                    // Silently ignore error
                     PyErr_Clear();
                 }
             }
@@ -957,7 +1066,7 @@ local_setattro(localobject *self, PyObject *name, PyObject *v)
 static PyObject *local_getattro(localobject *, PyObject *);
 
 static PyMemberDef local_type_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(localobject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(localobject, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -1006,12 +1115,10 @@ local_getattro(localobject *self, PyObject *name)
     }
 
     /* Optimization: just look in dict ourselves */
-    PyObject *value = PyDict_GetItemWithError(ldict, name);
-    if (value != NULL) {
-        return Py_NewRef(value);
-    }
-    if (PyErr_Occurred()) {
-        return NULL;
+    PyObject *value;
+    if (PyDict_GetItemRef(ldict, name, &value) != 0) {
+        // found or error
+        return value;
     }
 
     /* Fall back on generic to get __class__ and __dict__ */
@@ -1023,15 +1130,13 @@ local_getattro(localobject *self, PyObject *name)
 static PyObject *
 _localdummy_destroyed(PyObject *localweakref, PyObject *dummyweakref)
 {
-    assert(PyWeakref_CheckRef(localweakref));
-    PyObject *obj = PyWeakref_GET_OBJECT(localweakref);
-    if (obj == Py_None) {
+    localobject *self = (localobject *)_PyWeakref_GET_REF(localweakref);
+    if (self == NULL) {
         Py_RETURN_NONE;
     }
 
     /* If the thread-local object is still alive and not being cleared,
        remove the corresponding local dict */
-    localobject *self = (localobject *)Py_NewRef(obj);
     if (self->dummies != NULL) {
         PyObject *ldict;
         ldict = PyDict_GetItemWithError(self->dummies, dummyweakref);
@@ -1039,31 +1144,31 @@ _localdummy_destroyed(PyObject *localweakref, PyObject *dummyweakref)
             PyDict_DelItem(self->dummies, dummyweakref);
         }
         if (PyErr_Occurred())
-            PyErr_WriteUnraisable(obj);
+            PyErr_WriteUnraisable((PyObject*)self);
     }
-    Py_DECREF(obj);
+    Py_DECREF(self);
     Py_RETURN_NONE;
 }
 
 /* Module functions */
 
 struct bootstate {
-    PyInterpreterState *interp;
+    PyThreadState *tstate;
     PyObject *func;
     PyObject *args;
     PyObject *kwargs;
-    PyThreadState *tstate;
-    _PyRuntimeState *runtime;
 };
 
 
 static void
-thread_bootstate_free(struct bootstate *boot)
+thread_bootstate_free(struct bootstate *boot, int decref)
 {
-    Py_DECREF(boot->func);
-    Py_DECREF(boot->args);
-    Py_XDECREF(boot->kwargs);
-    PyMem_Free(boot);
+    if (decref) {
+        Py_DECREF(boot->func);
+        Py_DECREF(boot->args);
+        Py_XDECREF(boot->kwargs);
+    }
+    PyMem_RawFree(boot);
 }
 
 
@@ -1071,9 +1176,27 @@ static void
 thread_run(void *boot_raw)
 {
     struct bootstate *boot = (struct bootstate *) boot_raw;
-    PyThreadState *tstate;
+    PyThreadState *tstate = boot->tstate;
+
+    // gh-108987: If _thread.start_new_thread() is called before or while
+    // Python is being finalized, thread_run() can called *after*.
+    // _PyRuntimeState_SetFinalizing() is called. At this point, all Python
+    // threads must exit, except of the thread calling Py_Finalize() whch holds
+    // the GIL and must not exit.
+    //
+    // At this stage, tstate can be a dangling pointer (point to freed memory),
+    // it's ok to call _PyThreadState_MustExit() with a dangling pointer.
+    if (_PyThreadState_MustExit(tstate)) {
+        // Don't call PyThreadState_Clear() nor _PyThreadState_DeleteCurrent().
+        // These functions are called on tstate indirectly by Py_Finalize()
+        // which calls _PyInterpreterState_Clear().
+        //
+        // Py_DECREF() cannot be called because the GIL is not held: leak
+        // references on purpose. Python is being finalized anyway.
+        thread_bootstate_free(boot, 0);
+        goto exit;
+    }
 
-    tstate = boot->tstate;
     _PyThreadState_Bind(tstate);
     PyEval_AcquireThread(tstate);
     tstate->interp->threads.count++;
@@ -1084,27 +1207,31 @@ thread_run(void *boot_raw)
             /* SystemExit is ignored silently */
             PyErr_Clear();
         else {
-            _PyErr_WriteUnraisableMsg("in thread started by", boot->func);
+            PyErr_FormatUnraisable(
+                "Exception ignored in thread started by %R", boot->func);
         }
     }
     else {
         Py_DECREF(res);
     }
 
-    thread_bootstate_free(boot);
+    thread_bootstate_free(boot, 1);
+
     tstate->interp->threads.count--;
     PyThreadState_Clear(tstate);
     _PyThreadState_DeleteCurrent(tstate);
 
+exit:
     // bpo-44434: Don't call explicitly PyThread_exit_thread(). On Linux with
     // the glibc, pthread_exit() can abort the whole process if dlopen() fails
     // to open the libgcc_s.so library (ex: EMFILE error).
+    return;
 }
 
 static PyObject *
 thread_daemon_threads_allowed(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     if (interp->feature_flags & Py_RTFLAGS_DAEMON_THREADS) {
         Py_RETURN_TRUE;
     }
@@ -1119,11 +1246,66 @@ PyDoc_STRVAR(daemon_threads_allowed_doc,
 Return True if daemon threads are allowed in the current interpreter,\n\
 and False otherwise.\n");
 
+static int
+do_start_new_thread(thread_module_state* state,
+                    PyObject *func, PyObject* args, PyObject* kwargs,
+                    int joinable,
+                    PyThread_ident_t* ident, PyThread_handle_t* handle)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (!_PyInterpreterState_HasFeature(interp, Py_RTFLAGS_THREADS)) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "thread is not supported for isolated subinterpreters");
+        return -1;
+    }
+    if (interp->finalizing) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "can't create new thread at interpreter shutdown");
+        return -1;
+    }
+
+    // gh-109795: Use PyMem_RawMalloc() instead of PyMem_Malloc(),
+    // because it should be possible to call thread_bootstate_free()
+    // without holding the GIL.
+    struct bootstate *boot = PyMem_RawMalloc(sizeof(struct bootstate));
+    if (boot == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    boot->tstate = _PyThreadState_New(interp, _PyThreadState_WHENCE_THREADING);
+    if (boot->tstate == NULL) {
+        PyMem_RawFree(boot);
+        if (!PyErr_Occurred()) {
+            PyErr_NoMemory();
+        }
+        return -1;
+    }
+    boot->func = Py_NewRef(func);
+    boot->args = Py_NewRef(args);
+    boot->kwargs = Py_XNewRef(kwargs);
+
+    int err;
+    if (joinable) {
+        err = PyThread_start_joinable_thread(thread_run, (void*) boot, ident, handle);
+    } else {
+        *handle = 0;
+        *ident = PyThread_start_new_thread(thread_run, (void*) boot);
+        err = (*ident == PYTHREAD_INVALID_THREAD_ID);
+    }
+    if (err) {
+        PyErr_SetString(ThreadError, "can't start new thread");
+        PyThreadState_Clear(boot->tstate);
+        thread_bootstate_free(boot, 1);
+        return -1;
+    }
+    return 0;
+}
+
 static PyObject *
-thread_PyThread_start_new_thread(PyObject *self, PyObject *fargs)
+thread_PyThread_start_new_thread(PyObject *module, PyObject *fargs)
 {
-    _PyRuntimeState *runtime = &_PyRuntime;
     PyObject *func, *args, *kwargs = NULL;
+    thread_module_state *state = get_thread_state(module);
 
     if (!PyArg_UnpackTuple(fargs, "start_new_thread", 2, 3,
                            &func, &args, &kwargs))
@@ -1149,51 +1331,73 @@ thread_PyThread_start_new_thread(PyObject *self, PyObject *fargs)
         return NULL;
     }
 
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (!_PyInterpreterState_HasFeature(interp, Py_RTFLAGS_THREADS)) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "thread is not supported for isolated subinterpreters");
+    PyThread_ident_t ident = 0;
+    PyThread_handle_t handle;
+    if (do_start_new_thread(state, func, args, kwargs, /*joinable=*/ 0,
+                            &ident, &handle)) {
         return NULL;
     }
+    return PyLong_FromUnsignedLongLong(ident);
+}
 
-    struct bootstate *boot = PyMem_NEW(struct bootstate, 1);
-    if (boot == NULL) {
-        return PyErr_NoMemory();
+PyDoc_STRVAR(start_new_doc,
+"start_new_thread(function, args[, kwargs])\n\
+(start_new() is an obsolete synonym)\n\
+\n\
+Start a new thread and return its identifier.\n\
+\n\
+The thread will call the function with positional arguments from the\n\
+tuple args and keyword arguments taken from the optional dictionary\n\
+kwargs.  The thread exits when the function returns; the return value\n\
+is ignored.  The thread will also exit when the function raises an\n\
+unhandled exception; a stack trace will be printed unless the exception\n\
+is SystemExit.\n");
+
+static PyObject *
+thread_PyThread_start_joinable_thread(PyObject *module, PyObject *func)
+{
+    thread_module_state *state = get_thread_state(module);
+
+    if (!PyCallable_Check(func)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "thread function must be callable");
+        return NULL;
     }
-    boot->interp = _PyInterpreterState_GET();
-    boot->tstate = _PyThreadState_New(boot->interp);
-    if (boot->tstate == NULL) {
-        PyMem_Free(boot);
-        if (!PyErr_Occurred()) {
-            return PyErr_NoMemory();
-        }
+
+    if (PySys_Audit("_thread.start_joinable_thread", "O", func) < 0) {
         return NULL;
     }
-    boot->runtime = runtime;
-    boot->func = Py_NewRef(func);
-    boot->args = Py_NewRef(args);
-    boot->kwargs = Py_XNewRef(kwargs);
 
-    unsigned long ident = PyThread_start_new_thread(thread_run, (void*) boot);
-    if (ident == PYTHREAD_INVALID_THREAD_ID) {
-        PyErr_SetString(ThreadError, "can't start new thread");
-        PyThreadState_Clear(boot->tstate);
-        thread_bootstate_free(boot);
+    PyObject* args = PyTuple_New(0);
+    if (args == NULL) {
+        return NULL;
+    }
+    ThreadHandleObject* hobj = new_thread_handle(state);
+    if (hobj == NULL) {
+        Py_DECREF(args);
+        return NULL;
+    }
+    if (do_start_new_thread(state, func, args, /*kwargs=*/ NULL, /*joinable=*/ 1,
+                            &hobj->ident, &hobj->handle)) {
+        Py_DECREF(args);
+        Py_DECREF(hobj);
         return NULL;
     }
-    return PyLong_FromUnsignedLong(ident);
+    Py_DECREF(args);
+    hobj->joinable = 1;
+    return (PyObject*) hobj;
 }
 
-PyDoc_STRVAR(start_new_doc,
-"start_new_thread(function, args[, kwargs])\n\
-(start_new() is an obsolete synonym)\n\
+PyDoc_STRVAR(start_joinable_doc,
+"start_joinable_thread(function)\n\
 \n\
-Start a new thread and return its identifier.  The thread will call the\n\
-function with positional arguments from the tuple args and keyword arguments\n\
-taken from the optional dictionary kwargs.  The thread exits when the\n\
-function returns; the return value is ignored.  The thread will also exit\n\
-when the function raises an unhandled exception; a stack trace will be\n\
-printed unless the exception is SystemExit.\n");
+*For internal use only*: start a new thread.\n\
+\n\
+Like start_new_thread(), this starts a new thread calling the given function.\n\
+Unlike start_new_thread(), this returns a handle object with methods to join\n\
+or detach the given thread.\n\
+This function is not for third-party code, please use the\n\
+`threading` module instead.\n");
 
 static PyObject *
 thread_PyThread_exit_thread(PyObject *self, PyObject *Py_UNUSED(ignored))
@@ -1253,12 +1457,12 @@ information about locks.");
 static PyObject *
 thread_get_ident(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
-    unsigned long ident = PyThread_get_thread_ident();
+    PyThread_ident_t ident = PyThread_get_thread_ident_ex();
     if (ident == PYTHREAD_INVALID_THREAD_ID) {
         PyErr_SetString(ThreadError, "no current thread ident");
         return NULL;
     }
-    return PyLong_FromUnsignedLong(ident);
+    return PyLong_FromUnsignedLongLong(ident);
 }
 
 PyDoc_STRVAR(get_ident_doc,
@@ -1308,24 +1512,25 @@ This function is meant for internal and specialized purposes only.\n\
 In most applications `threading.enumerate()` should be used instead.");
 
 static void
-release_sentinel(void *wr_raw)
+release_sentinel(void *weakref_raw)
 {
-    PyObject *wr = _PyObject_CAST(wr_raw);
+    PyObject *weakref = _PyObject_CAST(weakref_raw);
+
     /* Tricky: this function is called when the current thread state
        is being deleted.  Therefore, only simple C code can safely
        execute here. */
-    PyObject *obj = PyWeakref_GET_OBJECT(wr);
-    lockobject *lock;
-    if (obj != Py_None) {
-        lock = (lockobject *) obj;
+    lockobject *lock = (lockobject *)_PyWeakref_GET_REF(weakref);
+    if (lock != NULL) {
         if (lock->locked) {
             PyThread_release_lock(lock->lock_lock);
             lock->locked = 0;
         }
+        Py_DECREF(lock);
     }
+
     /* Deallocating a weakref with a NULL callback only calls
        PyObject_GC_Del(), which can't call any Python code. */
-    Py_DECREF(wr);
+    Py_DECREF(weakref);
 }
 
 static PyObject *
@@ -1432,7 +1637,7 @@ thread_excepthook_file(PyObject *file, PyObject *exc_type, PyObject *exc_value,
 
     PyObject *name = NULL;
     if (thread != Py_None) {
-        if (_PyObject_LookupAttr(thread, &_Py_ID(name), &name) < 0) {
+        if (PyObject_GetOptionalAttr(thread, &_Py_ID(name), &name) < 0) {
             return -1;
         }
     }
@@ -1444,8 +1649,8 @@ thread_excepthook_file(PyObject *file, PyObject *exc_type, PyObject *exc_value,
         Py_DECREF(name);
     }
     else {
-        unsigned long ident = PyThread_get_thread_ident();
-        PyObject *str = PyUnicode_FromFormat("%lu", ident);
+        PyThread_ident_t ident = PyThread_get_thread_ident_ex();
+        PyObject *str = PyUnicode_FromFormat("%" PY_FORMAT_THREAD_IDENT_T, ident);
         if (str != NULL) {
             if (PyFile_WriteObject(str, file, Py_PRINT_RAW) < 0) {
                 Py_DECREF(str);
@@ -1470,11 +1675,9 @@ thread_excepthook_file(PyObject *file, PyObject *exc_type, PyObject *exc_value,
     _PyErr_Display(file, exc_type, exc_value, exc_traceback);
 
     /* Call file.flush() */
-    PyObject *res = PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
-    if (!res) {
+    if (_PyFile_Flush(file) < 0) {
         return -1;
     }
-    Py_DECREF(res);
 
     return 0;
 }
@@ -1563,11 +1766,25 @@ PyDoc_STRVAR(excepthook_doc,
 \n\
 Handle uncaught Thread.run() exception.");
 
+static PyObject *
+thread__is_main_interpreter(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    return PyBool_FromLong(_Py_IsMainInterpreter(interp));
+}
+
+PyDoc_STRVAR(thread__is_main_interpreter_doc,
+"_is_main_interpreter()\n\
+\n\
+Return True if the current interpreter is the main Python interpreter.");
+
 static PyMethodDef thread_methods[] = {
     {"start_new_thread",        (PyCFunction)thread_PyThread_start_new_thread,
      METH_VARARGS, start_new_doc},
     {"start_new",               (PyCFunction)thread_PyThread_start_new_thread,
      METH_VARARGS, start_new_doc},
+    {"start_joinable_thread",   (PyCFunction)thread_PyThread_start_joinable_thread,
+     METH_O, start_joinable_doc},
     {"daemon_threads_allowed",  (PyCFunction)thread_daemon_threads_allowed,
      METH_NOARGS, daemon_threads_allowed_doc},
     {"allocate_lock",           thread_PyThread_allocate_lock,
@@ -1592,8 +1809,10 @@ static PyMethodDef thread_methods[] = {
      METH_VARARGS, stack_size_doc},
     {"_set_sentinel",           thread__set_sentinel,
      METH_NOARGS, _set_sentinel_doc},
-    {"_excepthook",              thread_excepthook,
+    {"_excepthook",             thread_excepthook,
      METH_O, excepthook_doc},
+    {"_is_main_interpreter",    thread__is_main_interpreter,
+     METH_NOARGS, thread__is_main_interpreter_doc},
     {NULL,                      NULL}           /* sentinel */
 };
 
@@ -1609,6 +1828,15 @@ thread_module_exec(PyObject *module)
     // Initialize the C thread library
     PyThread_init_thread();
 
+    // _ThreadHandle
+    state->thread_handle_type = (PyTypeObject *)PyType_FromSpec(&ThreadHandle_Type_spec);
+    if (state->thread_handle_type == NULL) {
+        return -1;
+    }
+    if (PyDict_SetItemString(d, "_ThreadHandle", (PyObject *)state->thread_handle_type) < 0) {
+        return -1;
+    }
+
     // Lock
     state->lock_type = (PyTypeObject *)PyType_FromSpec(&lock_type_spec);
     if (state->lock_type == NULL) {
@@ -1665,8 +1893,8 @@ thread_module_exec(PyObject *module)
     // Round towards minus infinity
     timeout_max = floor(timeout_max);
 
-    if (PyModule_AddObject(module, "TIMEOUT_MAX",
-                           PyFloat_FromDouble(timeout_max)) < 0) {
+    if (PyModule_Add(module, "TIMEOUT_MAX",
+                        PyFloat_FromDouble(timeout_max)) < 0) {
         return -1;
     }
 
@@ -1682,6 +1910,7 @@ thread_module_traverse(PyObject *module, visitproc visit, void *arg)
     Py_VISIT(state->lock_type);
     Py_VISIT(state->local_type);
     Py_VISIT(state->local_dummy_type);
+    Py_VISIT(state->thread_handle_type);
     return 0;
 }
 
@@ -1693,6 +1922,7 @@ thread_module_clear(PyObject *module)
     Py_CLEAR(state->lock_type);
     Py_CLEAR(state->local_type);
     Py_CLEAR(state->local_dummy_type);
+    Py_CLEAR(state->thread_handle_type);
     return 0;
 }
 
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 4dada0b28f0559..64e752c305aae1 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -21,21 +21,19 @@ Copyright (C) 1994 Steen Lumholt.
 
 */
 
-#define PY_SSIZE_T_CLEAN
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
 #include "Python.h"
-#include <ctype.h>
 #ifdef MS_WINDOWS
 #  include "pycore_fileutils.h"   // _Py_stat()
 #endif
 
-#include "pycore_long.h"
+#include "pycore_long.h"          // _PyLong_IsNegative()
 
 #ifdef MS_WINDOWS
-#include <windows.h>
+#  include <windows.h>
 #endif
 
 #define CHECK_SIZE(size, elemsize) \
@@ -47,11 +45,11 @@ Copyright (C) 1994 Steen Lumholt.
 #define TCL_THREADS
 
 #ifdef TK_FRAMEWORK
-#include <Tcl/tcl.h>
-#include <Tk/tk.h>
+#  include <Tcl/tcl.h>
+#  include <Tk/tk.h>
 #else
-#include <tcl.h>
-#include <tk.h>
+#  include <tcl.h>
+#  include <tk.h>
 #endif
 
 #include "tkinter.h"
@@ -60,8 +58,17 @@ Copyright (C) 1994 Steen Lumholt.
 #error "Tk older than 8.5.12 not supported"
 #endif
 
+#ifndef TCL_WITH_EXTERNAL_TOMMATH
+#define TCL_NO_TOMMATH_H
+#endif
 #include <tclTomMath.h>
 
+#if defined(TCL_WITH_EXTERNAL_TOMMATH) || (TK_HEX_VERSION >= 0x08070000)
+#define USE_DEPRECATED_TOMMATH_API 0
+#else
+#define USE_DEPRECATED_TOMMATH_API 1
+#endif
+
 #if !(defined(MS_WINDOWS) || defined(__CYGWIN__))
 #define HAVE_CREATEFILEHANDLER
 #endif
@@ -127,11 +134,10 @@ _get_tcl_lib_path(void)
     static int already_checked = 0;
 
     if (already_checked == 0) {
-        PyObject *prefix;
         struct stat stat_buf;
         int stat_return_value;
 
-        prefix = PyUnicode_FromWideChar(Py_GetPrefix(), -1);
+        PyObject *prefix = PySys_GetObject("prefix");  // borrowed reference
         if (prefix == NULL) {
             return NULL;
         }
@@ -310,7 +316,6 @@ typedef struct {
     const Tcl_ObjType *WideIntType;
     const Tcl_ObjType *BignumType;
     const Tcl_ObjType *ListType;
-    const Tcl_ObjType *ProcBodyType;
     const Tcl_ObjType *StringType;
 } TkappObject;
 
@@ -588,7 +593,6 @@ Tkapp_New(const char *screenName, const char *className,
     v->WideIntType = Tcl_GetObjType("wideInt");
     v->BignumType = Tcl_GetObjType("bignum");
     v->ListType = Tcl_GetObjType("list");
-    v->ProcBodyType = Tcl_GetObjType("procbody");
     v->StringType = Tcl_GetObjType("string");
 
     /* Delete the 'exit' command, which can screw things up */
@@ -867,8 +871,9 @@ asBignumObj(PyObject *value)
         return NULL;
     }
     hexchars += neg + 2; /* skip sign and "0x" */
-    mp_init(&bigValue);
-    if (mp_read_radix(&bigValue, hexchars, 16) != MP_OKAY) {
+    if (mp_init(&bigValue) != MP_OKAY ||
+        mp_read_radix(&bigValue, hexchars, 16) != MP_OKAY)
+    {
         mp_clear(&bigValue);
         Py_DECREF(hexstr);
         PyErr_NoMemory();
@@ -905,16 +910,13 @@ AsObj(PyObject *value)
     if (PyLong_CheckExact(value)) {
         int overflow;
         long longValue;
-#ifdef TCL_WIDE_INT_TYPE
         Tcl_WideInt wideValue;
-#endif
         longValue = PyLong_AsLongAndOverflow(value, &overflow);
         if (!overflow) {
             return Tcl_NewLongObj(longValue);
         }
         /* If there is an overflow in the long conversion,
            fall through to wideInt handling. */
-#ifdef TCL_WIDE_INT_TYPE
         if (_PyLong_AsByteArray((PyLongObject *)value,
                                 (unsigned char *)(void *)&wideValue,
                                 sizeof(wideValue),
@@ -923,7 +925,6 @@ AsObj(PyObject *value)
             return Tcl_NewWideIntObj(wideValue);
         }
         PyErr_Clear();
-#endif
         /* If there is an overflow in the wideInt conversion,
            fall through to bignum handling. */
         return asBignumObj(value);
@@ -960,9 +961,6 @@ AsObj(PyObject *value)
     }
 
     if (PyUnicode_Check(value)) {
-        if (PyUnicode_READY(value) == -1)
-            return NULL;
-
         Py_ssize_t size = PyUnicode_GET_LENGTH(value);
         if (size == 0) {
             return Tcl_NewStringObj("", 0);
@@ -1050,20 +1048,33 @@ static PyObject*
 fromBignumObj(TkappObject *tkapp, Tcl_Obj *value)
 {
     mp_int bigValue;
+    mp_err err;
+#if USE_DEPRECATED_TOMMATH_API
     unsigned long numBytes;
+#else
+    size_t numBytes;
+#endif
     unsigned char *bytes;
     PyObject *res;
 
     if (Tcl_GetBignumFromObj(Tkapp_Interp(tkapp), value, &bigValue) != TCL_OK)
         return Tkinter_Error(tkapp);
+#if USE_DEPRECATED_TOMMATH_API
     numBytes = mp_unsigned_bin_size(&bigValue);
+#else
+    numBytes = mp_ubin_size(&bigValue);
+#endif
     bytes = PyMem_Malloc(numBytes);
     if (bytes == NULL) {
         mp_clear(&bigValue);
         return PyErr_NoMemory();
     }
-    if (mp_to_unsigned_bin_n(&bigValue, bytes,
-                                &numBytes) != MP_OKAY) {
+#if USE_DEPRECATED_TOMMATH_API
+    err = mp_to_unsigned_bin_n(&bigValue, bytes, &numBytes);
+#else
+    err = mp_to_ubin(&bigValue, bytes, numBytes, NULL);
+#endif
+    if (err != MP_OKAY) {
         mp_clear(&bigValue);
         PyMem_Free(bytes);
         return PyErr_NoMemory();
@@ -1157,10 +1168,6 @@ FromObj(TkappObject *tkapp, Tcl_Obj *value)
         return result;
     }
 
-    if (value->typePtr == tkapp->ProcBodyType) {
-      /* fall through: return tcl object. */
-    }
-
     if (value->typePtr == tkapp->StringType) {
         return unicodeFromTclObj(value);
     }
@@ -1195,7 +1202,7 @@ typedef struct Tkapp_CallEvent {
     Tcl_Condition *done;
 } Tkapp_CallEvent;
 
-void
+static void
 Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, int objc)
 {
     int i;
@@ -3180,7 +3187,7 @@ static struct PyModuleDef _tkintermodule = {
 PyMODINIT_FUNC
 PyInit__tkinter(void)
 {
-  PyObject *m, *uexe, *cexe, *o;
+    PyObject *m, *uexe, *cexe;
 
     tcl_lock = PyThread_allocate_lock();
     if (tcl_lock == NULL)
@@ -3190,17 +3197,11 @@ PyInit__tkinter(void)
     if (m == NULL)
         return NULL;
 
-    o = PyErr_NewException("_tkinter.TclError", NULL, NULL);
-    if (o == NULL) {
-        Py_DECREF(m);
-        return NULL;
-    }
-    if (PyModule_AddObject(m, "TclError", Py_NewRef(o))) {
-        Py_DECREF(o);
+    Tkinter_TclError = PyErr_NewException("_tkinter.TclError", NULL, NULL);
+    if (PyModule_AddObjectRef(m, "TclError", Tkinter_TclError)) {
         Py_DECREF(m);
         return NULL;
     }
-    Tkinter_TclError = o;
 
     if (PyModule_AddIntConstant(m, "READABLE", TCL_READABLE)) {
         Py_DECREF(m);
@@ -3247,47 +3248,29 @@ PyInit__tkinter(void)
         return NULL;
     }
 
-    o = PyType_FromSpec(&Tkapp_Type_spec);
-    if (o == NULL) {
+    Tkapp_Type = PyType_FromSpec(&Tkapp_Type_spec);
+    if (PyModule_AddObjectRef(m, "TkappType", Tkapp_Type)) {
         Py_DECREF(m);
         return NULL;
     }
-    if (PyModule_AddObject(m, "TkappType", o)) {
-        Py_DECREF(o);
-        Py_DECREF(m);
-        return NULL;
-    }
-    Tkapp_Type = o;
 
-    o = PyType_FromSpec(&Tktt_Type_spec);
-    if (o == NULL) {
-        Py_DECREF(m);
-        return NULL;
-    }
-    if (PyModule_AddObject(m, "TkttType", o)) {
-        Py_DECREF(o);
+    Tktt_Type = PyType_FromSpec(&Tktt_Type_spec);
+    if (PyModule_AddObjectRef(m, "TkttType", Tktt_Type)) {
         Py_DECREF(m);
         return NULL;
     }
-    Tktt_Type = o;
 
-    o = PyType_FromSpec(&PyTclObject_Type_spec);
-    if (o == NULL) {
-        Py_DECREF(m);
-        return NULL;
-    }
-    if (PyModule_AddObject(m, "Tcl_Obj", o)) {
-        Py_DECREF(o);
+    PyTclObject_Type = PyType_FromSpec(&PyTclObject_Type_spec);
+    if (PyModule_AddObjectRef(m, "Tcl_Obj", PyTclObject_Type)) {
         Py_DECREF(m);
         return NULL;
     }
-    PyTclObject_Type = o;
 
 
     /* This helps the dynamic loader; in Unicode aware Tcl versions
        it also helps Tcl find its encodings. */
-    uexe = PyUnicode_FromWideChar(Py_GetProgramName(), -1);
-    if (uexe) {
+    uexe = PySys_GetObject("executable");  // borrowed reference
+    if (uexe && PyUnicode_Check(uexe)) {   // sys.executable can be None
         cexe = PyUnicode_EncodeFSDefault(uexe);
         if (cexe) {
 #ifdef MS_WINDOWS
@@ -3326,7 +3309,6 @@ PyInit__tkinter(void)
 #endif /* MS_WINDOWS */
         }
         Py_XDECREF(cexe);
-        Py_DECREF(uexe);
     }
 
     if (PyErr_Occurred()) {
diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index c5714d5e7d5a0f..6dba3cac01c1c8 100644
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -1,987 +1,13 @@
 #include "Python.h"
-#include "pycore_fileutils.h"     // _Py_write_noraise()
-#include "pycore_gc.h"            // PyGC_Head
-#include "pycore_hashtable.h"     // _Py_hashtable_t
-#include "pycore_object.h"        // _PyType_PreHeaderSize
-#include "pycore_pymem.h"         // _Py_tracemalloc_config
-#include "pycore_runtime.h"       // _Py_ID()
-#include "pycore_traceback.h"
-#include <pycore_frame.h>
-#include "frameobject.h"          // _PyInterpreterFrame_GetLine
+#include "pycore_tracemalloc.h"  // _PyTraceMalloc_IsTracing
 
-#include <stdlib.h>               // malloc()
-
-#include "clinic/_tracemalloc.c.h"
-
-/*[clinic input]
-module _tracemalloc
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=708a98302fc46e5f]*/
-
-#define tracemalloc_config _PyRuntime.tracemalloc.config
-
-_Py_DECLARE_STR(anon_unknown, "<unknown>");
-
-/* Forward declaration */
-static void tracemalloc_stop(void);
-static void* raw_malloc(size_t size);
-static void raw_free(void *ptr);
-
-#ifdef Py_DEBUG
-#  define TRACE_DEBUG
-#endif
-
-#define TO_PTR(key) ((const void *)(uintptr_t)(key))
-#define FROM_PTR(key) ((uintptr_t)(key))
-
-#define allocators _PyRuntime.tracemalloc.allocators
-
-
-#if defined(TRACE_RAW_MALLOC)
-/* This lock is needed because tracemalloc_free() is called without
-   the GIL held from PyMem_RawFree(). It cannot acquire the lock because it
-   would introduce a deadlock in _PyThreadState_DeleteCurrent(). */
-#  define tables_lock _PyRuntime.tracemalloc.tables_lock
-#  define TABLES_LOCK() PyThread_acquire_lock(tables_lock, 1)
-#  define TABLES_UNLOCK() PyThread_release_lock(tables_lock)
-#else
-   /* variables are protected by the GIL */
-#  define TABLES_LOCK()
-#  define TABLES_UNLOCK()
-#endif
-
-
-#define DEFAULT_DOMAIN 0
-
-typedef struct tracemalloc_frame frame_t;
-typedef struct tracemalloc_traceback traceback_t;
-
-#define TRACEBACK_SIZE(NFRAME) \
-        (sizeof(traceback_t) + sizeof(frame_t) * (NFRAME - 1))
-
-/* The maximum number of frames is either:
- - The maximum number of frames we can store in `traceback_t.nframe`
- - The maximum memory size_t we can allocate */
-static const unsigned long MAX_NFRAME = Py_MIN(UINT16_MAX, ((SIZE_MAX - sizeof(traceback_t)) / sizeof(frame_t) + 1));
-
-
-#define tracemalloc_empty_traceback _PyRuntime.tracemalloc.empty_traceback
-
-
-/* Trace of a memory block */
-typedef struct {
-    /* Size of the memory block in bytes */
-    size_t size;
-
-    /* Traceback where the memory block was allocated */
-    traceback_t *traceback;
-} trace_t;
-
-
-#define tracemalloc_traced_memory _PyRuntime.tracemalloc.traced_memory
-#define tracemalloc_peak_traced_memory _PyRuntime.tracemalloc.peak_traced_memory
-#define tracemalloc_filenames _PyRuntime.tracemalloc.filenames
-#define tracemalloc_traceback _PyRuntime.tracemalloc.traceback
-#define tracemalloc_tracebacks _PyRuntime.tracemalloc.tracebacks
-#define tracemalloc_traces _PyRuntime.tracemalloc.traces
-#define tracemalloc_domains _PyRuntime.tracemalloc.domains
-
-
-#ifdef TRACE_DEBUG
-static void
-tracemalloc_error(const char *format, ...)
-{
-    va_list ap;
-    fprintf(stderr, "tracemalloc: ");
-    va_start(ap, format);
-    vfprintf(stderr, format, ap);
-    va_end(ap);
-    fprintf(stderr, "\n");
-    fflush(stderr);
-}
-#endif
-
-
-#if defined(TRACE_RAW_MALLOC)
-#define REENTRANT_THREADLOCAL
-
-#define tracemalloc_reentrant_key _PyRuntime.tracemalloc.reentrant_key
-
-/* Any non-NULL pointer can be used */
-#define REENTRANT Py_True
-
-static int
-get_reentrant(void)
-{
-    void *ptr;
-
-    assert(PyThread_tss_is_created(&tracemalloc_reentrant_key));
-    ptr = PyThread_tss_get(&tracemalloc_reentrant_key);
-    if (ptr != NULL) {
-        assert(ptr == REENTRANT);
-        return 1;
-    }
-    else
-        return 0;
-}
-
-static void
-set_reentrant(int reentrant)
-{
-    assert(reentrant == 0 || reentrant == 1);
-    assert(PyThread_tss_is_created(&tracemalloc_reentrant_key));
-
-    if (reentrant) {
-        assert(!get_reentrant());
-        PyThread_tss_set(&tracemalloc_reentrant_key, REENTRANT);
-    }
-    else {
-        assert(get_reentrant());
-        PyThread_tss_set(&tracemalloc_reentrant_key, NULL);
-    }
-}
-
-#else
-
-/* TRACE_RAW_MALLOC not defined: variable protected by the GIL */
-static int tracemalloc_reentrant = 0;
-
-static int
-get_reentrant(void)
-{
-    return tracemalloc_reentrant;
-}
-
-static void
-set_reentrant(int reentrant)
-{
-    assert(reentrant != tracemalloc_reentrant);
-    tracemalloc_reentrant = reentrant;
-}
-#endif
-
-
-static Py_uhash_t
-hashtable_hash_pyobject(const void *key)
-{
-    PyObject *obj = (PyObject *)key;
-    return PyObject_Hash(obj);
-}
-
-
-static int
-hashtable_compare_unicode(const void *key1, const void *key2)
-{
-    PyObject *obj1 = (PyObject *)key1;
-    PyObject *obj2 = (PyObject *)key2;
-    if (obj1 != NULL && obj2 != NULL) {
-        return (PyUnicode_Compare(obj1, obj2) == 0);
-    }
-    else {
-        return obj1 == obj2;
-    }
-}
-
-
-static Py_uhash_t
-hashtable_hash_uint(const void *key_raw)
-{
-    unsigned int key = (unsigned int)FROM_PTR(key_raw);
-    return (Py_uhash_t)key;
-}
-
-
-static _Py_hashtable_t *
-hashtable_new(_Py_hashtable_hash_func hash_func,
-              _Py_hashtable_compare_func compare_func,
-              _Py_hashtable_destroy_func key_destroy_func,
-              _Py_hashtable_destroy_func value_destroy_func)
-{
-    _Py_hashtable_allocator_t hashtable_alloc = {malloc, free};
-    return _Py_hashtable_new_full(hash_func, compare_func,
-                                  key_destroy_func, value_destroy_func,
-                                  &hashtable_alloc);
-}
-
-
-static void*
-raw_malloc(size_t size)
-{
-    return allocators.raw.malloc(allocators.raw.ctx, size);
-}
-
-static void
-raw_free(void *ptr)
-{
-    allocators.raw.free(allocators.raw.ctx, ptr);
-}
-
-
-static Py_uhash_t
-hashtable_hash_traceback(const void *key)
-{
-    const traceback_t *traceback = (const traceback_t *)key;
-    return traceback->hash;
-}
-
-
-static int
-hashtable_compare_traceback(const void *key1, const void *key2)
-{
-    const traceback_t *traceback1 = (const traceback_t *)key1;
-    const traceback_t *traceback2 = (const traceback_t *)key2;
-
-    if (traceback1->nframe != traceback2->nframe) {
-        return 0;
-    }
-    if (traceback1->total_nframe != traceback2->total_nframe) {
-        return 0;
-    }
-
-    for (int i=0; i < traceback1->nframe; i++) {
-        const frame_t *frame1 = &traceback1->frames[i];
-        const frame_t *frame2 = &traceback2->frames[i];
-
-        if (frame1->lineno != frame2->lineno) {
-            return 0;
-        }
-        if (frame1->filename != frame2->filename) {
-            assert(PyUnicode_Compare(frame1->filename, frame2->filename) != 0);
-            return 0;
-        }
-    }
-    return 1;
-}
-
-
-static void
-tracemalloc_get_frame(_PyInterpreterFrame *pyframe, frame_t *frame)
-{
-    frame->filename = &_Py_STR(anon_unknown);
-    int lineno = PyUnstable_InterpreterFrame_GetLine(pyframe);
-    if (lineno < 0) {
-        lineno = 0;
-    }
-    frame->lineno = (unsigned int)lineno;
-
-    PyObject *filename = pyframe->f_code->co_filename;
-
-    if (filename == NULL) {
-#ifdef TRACE_DEBUG
-        tracemalloc_error("failed to get the filename of the code object");
-#endif
-        return;
-    }
-
-    if (!PyUnicode_Check(filename)) {
-#ifdef TRACE_DEBUG
-        tracemalloc_error("filename is not a unicode string");
-#endif
-        return;
-    }
-    if (!PyUnicode_IS_READY(filename)) {
-        /* Don't make a Unicode string ready to avoid reentrant calls
-           to tracemalloc_malloc() or tracemalloc_realloc() */
-#ifdef TRACE_DEBUG
-        tracemalloc_error("filename is not a ready unicode string");
-#endif
-        return;
-    }
-
-    /* intern the filename */
-    _Py_hashtable_entry_t *entry;
-    entry = _Py_hashtable_get_entry(tracemalloc_filenames, filename);
-    if (entry != NULL) {
-        filename = (PyObject *)entry->key;
-    }
-    else {
-        /* tracemalloc_filenames is responsible to keep a reference
-           to the filename */
-        if (_Py_hashtable_set(tracemalloc_filenames, Py_NewRef(filename),
-                              NULL) < 0) {
-            Py_DECREF(filename);
-#ifdef TRACE_DEBUG
-            tracemalloc_error("failed to intern the filename");
-#endif
-            return;
-        }
-    }
-
-    /* the tracemalloc_filenames table keeps a reference to the filename */
-    frame->filename = filename;
-}
-
-
-static Py_uhash_t
-traceback_hash(traceback_t *traceback)
-{
-    /* code based on tuplehash() of Objects/tupleobject.c */
-    Py_uhash_t x, y;  /* Unsigned for defined overflow behavior. */
-    int len = traceback->nframe;
-    Py_uhash_t mult = _PyHASH_MULTIPLIER;
-    frame_t *frame;
-
-    x = 0x345678UL;
-    frame = traceback->frames;
-    while (--len >= 0) {
-        y = (Py_uhash_t)PyObject_Hash(frame->filename);
-        y ^= (Py_uhash_t)frame->lineno;
-        frame++;
-
-        x = (x ^ y) * mult;
-        /* the cast might truncate len; that doesn't change hash stability */
-        mult += (Py_uhash_t)(82520UL + len + len);
-    }
-    x ^= traceback->total_nframe;
-    x += 97531UL;
-    return x;
-}
-
-
-static void
-traceback_get_frames(traceback_t *traceback)
-{
-    PyThreadState *tstate = PyGILState_GetThisThreadState();
-    if (tstate == NULL) {
-#ifdef TRACE_DEBUG
-        tracemalloc_error("failed to get the current thread state");
-#endif
-        return;
-    }
-
-    _PyInterpreterFrame *pyframe = _PyThreadState_GetFrame(tstate);
-    while (pyframe) {
-        if (traceback->nframe < tracemalloc_config.max_nframe) {
-            tracemalloc_get_frame(pyframe, &traceback->frames[traceback->nframe]);
-            assert(traceback->frames[traceback->nframe].filename != NULL);
-            traceback->nframe++;
-        }
-        if (traceback->total_nframe < UINT16_MAX) {
-            traceback->total_nframe++;
-        }
-        pyframe = _PyFrame_GetFirstComplete(pyframe->previous);
-    }
-}
-
-
-static traceback_t *
-traceback_new(void)
-{
-    traceback_t *traceback;
-    _Py_hashtable_entry_t *entry;
-
-    assert(PyGILState_Check());
-
-    /* get frames */
-    traceback = tracemalloc_traceback;
-    traceback->nframe = 0;
-    traceback->total_nframe = 0;
-    traceback_get_frames(traceback);
-    if (traceback->nframe == 0)
-        return &tracemalloc_empty_traceback;
-    traceback->hash = traceback_hash(traceback);
-
-    /* intern the traceback */
-    entry = _Py_hashtable_get_entry(tracemalloc_tracebacks, traceback);
-    if (entry != NULL) {
-        traceback = (traceback_t *)entry->key;
-    }
-    else {
-        traceback_t *copy;
-        size_t traceback_size;
-
-        traceback_size = TRACEBACK_SIZE(traceback->nframe);
-
-        copy = raw_malloc(traceback_size);
-        if (copy == NULL) {
-#ifdef TRACE_DEBUG
-            tracemalloc_error("failed to intern the traceback: malloc failed");
-#endif
-            return NULL;
-        }
-        memcpy(copy, traceback, traceback_size);
-
-        if (_Py_hashtable_set(tracemalloc_tracebacks, copy, NULL) < 0) {
-            raw_free(copy);
-#ifdef TRACE_DEBUG
-            tracemalloc_error("failed to intern the traceback: putdata failed");
-#endif
-            return NULL;
-        }
-        traceback = copy;
-    }
-    return traceback;
-}
-
-
-static _Py_hashtable_t*
-tracemalloc_create_traces_table(void)
-{
-    return hashtable_new(_Py_hashtable_hash_ptr,
-                         _Py_hashtable_compare_direct,
-                         NULL, raw_free);
-}
-
-
-static _Py_hashtable_t*
-tracemalloc_create_domains_table(void)
-{
-    return hashtable_new(hashtable_hash_uint,
-                         _Py_hashtable_compare_direct,
-                         NULL,
-                         (_Py_hashtable_destroy_func)_Py_hashtable_destroy);
-}
-
-
-static _Py_hashtable_t*
-tracemalloc_get_traces_table(unsigned int domain)
-{
-    if (domain == DEFAULT_DOMAIN) {
-        return tracemalloc_traces;
-    }
-    else {
-        return _Py_hashtable_get(tracemalloc_domains, TO_PTR(domain));
-    }
-}
-
-
-static void
-tracemalloc_remove_trace(unsigned int domain, uintptr_t ptr)
-{
-    assert(tracemalloc_config.tracing);
-
-    _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
-    if (!traces) {
-        return;
-    }
-
-    trace_t *trace = _Py_hashtable_steal(traces, TO_PTR(ptr));
-    if (!trace) {
-        return;
-    }
-    assert(tracemalloc_traced_memory >= trace->size);
-    tracemalloc_traced_memory -= trace->size;
-    raw_free(trace);
-}
-
-#define REMOVE_TRACE(ptr) \
-            tracemalloc_remove_trace(DEFAULT_DOMAIN, (uintptr_t)(ptr))
-
-
-static int
-tracemalloc_add_trace(unsigned int domain, uintptr_t ptr,
-                      size_t size)
-{
-    assert(tracemalloc_config.tracing);
-
-    traceback_t *traceback = traceback_new();
-    if (traceback == NULL) {
-        return -1;
-    }
-
-    _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
-    if (traces == NULL) {
-        traces = tracemalloc_create_traces_table();
-        if (traces == NULL) {
-            return -1;
-        }
-
-        if (_Py_hashtable_set(tracemalloc_domains, TO_PTR(domain), traces) < 0) {
-            _Py_hashtable_destroy(traces);
-            return -1;
-        }
-    }
-
-    trace_t *trace = _Py_hashtable_get(traces, TO_PTR(ptr));
-    if (trace != NULL) {
-        /* the memory block is already tracked */
-        assert(tracemalloc_traced_memory >= trace->size);
-        tracemalloc_traced_memory -= trace->size;
-
-        trace->size = size;
-        trace->traceback = traceback;
-    }
-    else {
-        trace = raw_malloc(sizeof(trace_t));
-        if (trace == NULL) {
-            return -1;
-        }
-        trace->size = size;
-        trace->traceback = traceback;
-
-        int res = _Py_hashtable_set(traces, TO_PTR(ptr), trace);
-        if (res != 0) {
-            raw_free(trace);
-            return res;
-        }
-    }
-
-    assert(tracemalloc_traced_memory <= SIZE_MAX - size);
-    tracemalloc_traced_memory += size;
-    if (tracemalloc_traced_memory > tracemalloc_peak_traced_memory) {
-        tracemalloc_peak_traced_memory = tracemalloc_traced_memory;
-    }
-    return 0;
-}
-
-#define ADD_TRACE(ptr, size) \
-            tracemalloc_add_trace(DEFAULT_DOMAIN, (uintptr_t)(ptr), size)
-
-
-static void*
-tracemalloc_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize)
-{
-    PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-    void *ptr;
-
-    assert(elsize == 0 || nelem <= SIZE_MAX / elsize);
-
-    if (use_calloc)
-        ptr = alloc->calloc(alloc->ctx, nelem, elsize);
-    else
-        ptr = alloc->malloc(alloc->ctx, nelem * elsize);
-    if (ptr == NULL)
-        return NULL;
-
-    TABLES_LOCK();
-    if (ADD_TRACE(ptr, nelem * elsize) < 0) {
-        /* Failed to allocate a trace for the new memory block */
-        TABLES_UNLOCK();
-        alloc->free(alloc->ctx, ptr);
-        return NULL;
-    }
-    TABLES_UNLOCK();
-    return ptr;
-}
-
-
-static void*
-tracemalloc_realloc(void *ctx, void *ptr, size_t new_size)
-{
-    PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-    void *ptr2;
-
-    ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
-    if (ptr2 == NULL)
-        return NULL;
-
-    if (ptr != NULL) {
-        /* an existing memory block has been resized */
-
-        TABLES_LOCK();
-
-        /* tracemalloc_add_trace() updates the trace if there is already
-           a trace at address ptr2 */
-        if (ptr2 != ptr) {
-            REMOVE_TRACE(ptr);
-        }
-
-        if (ADD_TRACE(ptr2, new_size) < 0) {
-            /* Memory allocation failed. The error cannot be reported to
-               the caller, because realloc() may already have shrunk the
-               memory block and so removed bytes.
-
-               This case is very unlikely: a hash entry has just been
-               released, so the hash table should have at least one free entry.
-
-               The GIL and the table lock ensures that only one thread is
-               allocating memory. */
-            Py_FatalError("tracemalloc_realloc() failed to allocate a trace");
-        }
-        TABLES_UNLOCK();
-    }
-    else {
-        /* new allocation */
-
-        TABLES_LOCK();
-        if (ADD_TRACE(ptr2, new_size) < 0) {
-            /* Failed to allocate a trace for the new memory block */
-            TABLES_UNLOCK();
-            alloc->free(alloc->ctx, ptr2);
-            return NULL;
-        }
-        TABLES_UNLOCK();
-    }
-    return ptr2;
-}
-
-
-static void
-tracemalloc_free(void *ctx, void *ptr)
-{
-    PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-
-    if (ptr == NULL)
-        return;
-
-     /* GIL cannot be locked in PyMem_RawFree() because it would introduce
-        a deadlock in _PyThreadState_DeleteCurrent(). */
-
-    alloc->free(alloc->ctx, ptr);
-
-    TABLES_LOCK();
-    REMOVE_TRACE(ptr);
-    TABLES_UNLOCK();
-}
-
-
-static void*
-tracemalloc_alloc_gil(int use_calloc, void *ctx, size_t nelem, size_t elsize)
-{
-    void *ptr;
-
-    if (get_reentrant()) {
-        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-        if (use_calloc)
-            return alloc->calloc(alloc->ctx, nelem, elsize);
-        else
-            return alloc->malloc(alloc->ctx, nelem * elsize);
-    }
-
-    /* Ignore reentrant call. PyObjet_Malloc() calls PyMem_Malloc() for
-       allocations larger than 512 bytes, don't trace the same memory
-       allocation twice. */
-    set_reentrant(1);
-
-    ptr = tracemalloc_alloc(use_calloc, ctx, nelem, elsize);
-
-    set_reentrant(0);
-    return ptr;
-}
-
-
-static void*
-tracemalloc_malloc_gil(void *ctx, size_t size)
-{
-    return tracemalloc_alloc_gil(0, ctx, 1, size);
-}
-
-
-static void*
-tracemalloc_calloc_gil(void *ctx, size_t nelem, size_t elsize)
-{
-    return tracemalloc_alloc_gil(1, ctx, nelem, elsize);
-}
-
-
-static void*
-tracemalloc_realloc_gil(void *ctx, void *ptr, size_t new_size)
-{
-    void *ptr2;
-
-    if (get_reentrant()) {
-        /* Reentrant call to PyMem_Realloc() and PyMem_RawRealloc().
-           Example: PyMem_RawRealloc() is called internally by pymalloc
-           (_PyObject_Malloc() and  _PyObject_Realloc()) to allocate a new
-           arena (new_arena()). */
-        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-
-        ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
-        if (ptr2 != NULL && ptr != NULL) {
-            TABLES_LOCK();
-            REMOVE_TRACE(ptr);
-            TABLES_UNLOCK();
-        }
-        return ptr2;
-    }
-
-    /* Ignore reentrant call. PyObjet_Realloc() calls PyMem_Realloc() for
-       allocations larger than 512 bytes. Don't trace the same memory
-       allocation twice. */
-    set_reentrant(1);
-
-    ptr2 = tracemalloc_realloc(ctx, ptr, new_size);
-
-    set_reentrant(0);
-    return ptr2;
-}
-
-
-#ifdef TRACE_RAW_MALLOC
-static void*
-tracemalloc_raw_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize)
-{
-    PyGILState_STATE gil_state;
-    void *ptr;
-
-    if (get_reentrant()) {
-        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-        if (use_calloc)
-            return alloc->calloc(alloc->ctx, nelem, elsize);
-        else
-            return alloc->malloc(alloc->ctx, nelem * elsize);
-    }
-
-    /* Ignore reentrant call. PyGILState_Ensure() may call PyMem_RawMalloc()
-       indirectly which would call PyGILState_Ensure() if reentrant are not
-       disabled. */
-    set_reentrant(1);
-
-    gil_state = PyGILState_Ensure();
-    ptr = tracemalloc_alloc(use_calloc, ctx, nelem, elsize);
-    PyGILState_Release(gil_state);
-
-    set_reentrant(0);
-    return ptr;
-}
-
-
-static void*
-tracemalloc_raw_malloc(void *ctx, size_t size)
-{
-    return tracemalloc_raw_alloc(0, ctx, 1, size);
-}
-
-
-static void*
-tracemalloc_raw_calloc(void *ctx, size_t nelem, size_t elsize)
-{
-    return tracemalloc_raw_alloc(1, ctx, nelem, elsize);
-}
-
-
-static void*
-tracemalloc_raw_realloc(void *ctx, void *ptr, size_t new_size)
-{
-    PyGILState_STATE gil_state;
-    void *ptr2;
-
-    if (get_reentrant()) {
-        /* Reentrant call to PyMem_RawRealloc(). */
-        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
-
-        ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
-
-        if (ptr2 != NULL && ptr != NULL) {
-            TABLES_LOCK();
-            REMOVE_TRACE(ptr);
-            TABLES_UNLOCK();
-        }
-        return ptr2;
-    }
-
-    /* Ignore reentrant call. PyGILState_Ensure() may call PyMem_RawMalloc()
-       indirectly which would call PyGILState_Ensure() if reentrant calls are
-       not disabled. */
-    set_reentrant(1);
-
-    gil_state = PyGILState_Ensure();
-    ptr2 = tracemalloc_realloc(ctx, ptr, new_size);
-    PyGILState_Release(gil_state);
-
-    set_reentrant(0);
-    return ptr2;
-}
-#endif   /* TRACE_RAW_MALLOC */
-
-
-static void
-tracemalloc_clear_filename(void *value)
-{
-    PyObject *filename = (PyObject *)value;
-    Py_DECREF(filename);
-}
-
-
-/* reentrant flag must be set to call this function and GIL must be held */
-static void
-tracemalloc_clear_traces(void)
-{
-    /* The GIL protects variables against concurrent access */
-    assert(PyGILState_Check());
-
-    TABLES_LOCK();
-    _Py_hashtable_clear(tracemalloc_traces);
-    _Py_hashtable_clear(tracemalloc_domains);
-    tracemalloc_traced_memory = 0;
-    tracemalloc_peak_traced_memory = 0;
-    TABLES_UNLOCK();
-
-    _Py_hashtable_clear(tracemalloc_tracebacks);
-
-    _Py_hashtable_clear(tracemalloc_filenames);
-}
-
-
-static int
-tracemalloc_init(void)
-{
-    if (tracemalloc_config.initialized == TRACEMALLOC_FINALIZED) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "the tracemalloc module has been unloaded");
-        return -1;
-    }
-
-    if (tracemalloc_config.initialized == TRACEMALLOC_INITIALIZED)
-        return 0;
-
-    PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
-
-#ifdef REENTRANT_THREADLOCAL
-    if (PyThread_tss_create(&tracemalloc_reentrant_key) != 0) {
-#ifdef MS_WINDOWS
-        PyErr_SetFromWindowsErr(0);
-#else
-        PyErr_SetFromErrno(PyExc_OSError);
-#endif
-        return -1;
-    }
-#endif
-
-#if defined(TRACE_RAW_MALLOC)
-    if (tables_lock == NULL) {
-        tables_lock = PyThread_allocate_lock();
-        if (tables_lock == NULL) {
-            PyErr_SetString(PyExc_RuntimeError, "cannot allocate lock");
-            return -1;
-        }
-    }
-#endif
-
-    tracemalloc_filenames = hashtable_new(hashtable_hash_pyobject,
-                                          hashtable_compare_unicode,
-                                          tracemalloc_clear_filename, NULL);
-
-    tracemalloc_tracebacks = hashtable_new(hashtable_hash_traceback,
-                                           hashtable_compare_traceback,
-                                           NULL, raw_free);
-
-    tracemalloc_traces = tracemalloc_create_traces_table();
-    tracemalloc_domains = tracemalloc_create_domains_table();
-
-    if (tracemalloc_filenames == NULL || tracemalloc_tracebacks == NULL
-       || tracemalloc_traces == NULL || tracemalloc_domains == NULL) {
-        PyErr_NoMemory();
-        return -1;
-    }
-
-    tracemalloc_empty_traceback.nframe = 1;
-    tracemalloc_empty_traceback.total_nframe = 1;
-    /* borrowed reference */
-    tracemalloc_empty_traceback.frames[0].filename = &_Py_STR(anon_unknown);
-    tracemalloc_empty_traceback.frames[0].lineno = 0;
-    tracemalloc_empty_traceback.hash = traceback_hash(&tracemalloc_empty_traceback);
-
-    tracemalloc_config.initialized = TRACEMALLOC_INITIALIZED;
-    return 0;
-}
-
-
-static void
-tracemalloc_deinit(void)
-{
-    if (tracemalloc_config.initialized != TRACEMALLOC_INITIALIZED)
-        return;
-    tracemalloc_config.initialized = TRACEMALLOC_FINALIZED;
-
-    tracemalloc_stop();
-
-    /* destroy hash tables */
-    _Py_hashtable_destroy(tracemalloc_domains);
-    _Py_hashtable_destroy(tracemalloc_traces);
-    _Py_hashtable_destroy(tracemalloc_tracebacks);
-    _Py_hashtable_destroy(tracemalloc_filenames);
-
-#if defined(TRACE_RAW_MALLOC)
-    if (tables_lock != NULL) {
-        PyThread_free_lock(tables_lock);
-        tables_lock = NULL;
-    }
-#endif
-
-#ifdef REENTRANT_THREADLOCAL
-    PyThread_tss_delete(&tracemalloc_reentrant_key);
-#endif
-}
-
-
-static int
-tracemalloc_start(int max_nframe)
-{
-    PyMemAllocatorEx alloc;
-    size_t size;
-
-    if (max_nframe < 1 || (unsigned long) max_nframe > MAX_NFRAME) {
-        PyErr_Format(PyExc_ValueError,
-                     "the number of frames must be in range [1; %lu]",
-                     MAX_NFRAME);
-        return -1;
-    }
-
-    if (tracemalloc_init() < 0) {
-        return -1;
-    }
-
-    if (tracemalloc_config.tracing) {
-        /* hook already installed: do nothing */
-        return 0;
-    }
-
-    tracemalloc_config.max_nframe = max_nframe;
-
-    /* allocate a buffer to store a new traceback */
-    size = TRACEBACK_SIZE(max_nframe);
-    assert(tracemalloc_traceback == NULL);
-    tracemalloc_traceback = raw_malloc(size);
-    if (tracemalloc_traceback == NULL) {
-        PyErr_NoMemory();
-        return -1;
-    }
-
-#ifdef TRACE_RAW_MALLOC
-    alloc.malloc = tracemalloc_raw_malloc;
-    alloc.calloc = tracemalloc_raw_calloc;
-    alloc.realloc = tracemalloc_raw_realloc;
-    alloc.free = tracemalloc_free;
-
-    alloc.ctx = &allocators.raw;
-    PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &alloc);
-#endif
-
-    alloc.malloc = tracemalloc_malloc_gil;
-    alloc.calloc = tracemalloc_calloc_gil;
-    alloc.realloc = tracemalloc_realloc_gil;
-    alloc.free = tracemalloc_free;
-
-    alloc.ctx = &allocators.mem;
-    PyMem_GetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem);
-    PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &alloc);
-
-    alloc.ctx = &allocators.obj;
-    PyMem_GetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj);
-    PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &alloc);
-
-    /* everything is ready: start tracing Python memory allocations */
-    tracemalloc_config.tracing = 1;
-
-    return 0;
-}
-
-
-static void
-tracemalloc_stop(void)
-{
-    if (!tracemalloc_config.tracing)
-        return;
-
-    /* stop tracing Python memory allocations */
-    tracemalloc_config.tracing = 0;
-
-    /* unregister the hook on memory allocators */
-#ifdef TRACE_RAW_MALLOC
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
-#endif
-    PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem);
-    PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj);
-
-    tracemalloc_clear_traces();
+#include "clinic/_tracemalloc.c.h"
 
-    /* release memory */
-    raw_free(tracemalloc_traceback);
-    tracemalloc_traceback = NULL;
-}
 
+/*[clinic input]
+module _tracemalloc
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=708a98302fc46e5f]*/
 
 
 /*[clinic input]
@@ -994,7 +20,7 @@ static PyObject *
 _tracemalloc_is_tracing_impl(PyObject *module)
 /*[clinic end generated code: output=2d763b42601cd3ef input=af104b0a00192f63]*/
 {
-    return PyBool_FromLong(tracemalloc_config.tracing);
+    return PyBool_FromLong(_PyTraceMalloc_IsTracing());
 }
 
 
@@ -1008,262 +34,11 @@ static PyObject *
 _tracemalloc_clear_traces_impl(PyObject *module)
 /*[clinic end generated code: output=a86080ee41b84197 input=0dab5b6c785183a5]*/
 {
-    if (!tracemalloc_config.tracing)
-        Py_RETURN_NONE;
-
-    set_reentrant(1);
-    tracemalloc_clear_traces();
-    set_reentrant(0);
-
+    _PyTraceMalloc_ClearTraces();
     Py_RETURN_NONE;
 }
 
 
-static PyObject*
-frame_to_pyobject(frame_t *frame)
-{
-    PyObject *frame_obj, *lineno_obj;
-
-    frame_obj = PyTuple_New(2);
-    if (frame_obj == NULL)
-        return NULL;
-
-    PyTuple_SET_ITEM(frame_obj, 0, Py_NewRef(frame->filename));
-
-    lineno_obj = PyLong_FromUnsignedLong(frame->lineno);
-    if (lineno_obj == NULL) {
-        Py_DECREF(frame_obj);
-        return NULL;
-    }
-    PyTuple_SET_ITEM(frame_obj, 1, lineno_obj);
-
-    return frame_obj;
-}
-
-
-static PyObject*
-traceback_to_pyobject(traceback_t *traceback, _Py_hashtable_t *intern_table)
-{
-    PyObject *frames;
-
-    if (intern_table != NULL) {
-        frames = _Py_hashtable_get(intern_table, (const void *)traceback);
-        if (frames) {
-            return Py_NewRef(frames);
-        }
-    }
-
-    frames = PyTuple_New(traceback->nframe);
-    if (frames == NULL)
-        return NULL;
-
-    for (int i=0; i < traceback->nframe; i++) {
-        PyObject *frame = frame_to_pyobject(&traceback->frames[i]);
-        if (frame == NULL) {
-            Py_DECREF(frames);
-            return NULL;
-        }
-        PyTuple_SET_ITEM(frames, i, frame);
-    }
-
-    if (intern_table != NULL) {
-        if (_Py_hashtable_set(intern_table, traceback, frames) < 0) {
-            Py_DECREF(frames);
-            PyErr_NoMemory();
-            return NULL;
-        }
-        /* intern_table keeps a new reference to frames */
-        Py_INCREF(frames);
-    }
-    return frames;
-}
-
-
-static PyObject*
-trace_to_pyobject(unsigned int domain, const trace_t *trace,
-                  _Py_hashtable_t *intern_tracebacks)
-{
-    PyObject *trace_obj = NULL;
-    PyObject *obj;
-
-    trace_obj = PyTuple_New(4);
-    if (trace_obj == NULL)
-        return NULL;
-
-    obj = PyLong_FromSize_t(domain);
-    if (obj == NULL) {
-        Py_DECREF(trace_obj);
-        return NULL;
-    }
-    PyTuple_SET_ITEM(trace_obj, 0, obj);
-
-    obj = PyLong_FromSize_t(trace->size);
-    if (obj == NULL) {
-        Py_DECREF(trace_obj);
-        return NULL;
-    }
-    PyTuple_SET_ITEM(trace_obj, 1, obj);
-
-    obj = traceback_to_pyobject(trace->traceback, intern_tracebacks);
-    if (obj == NULL) {
-        Py_DECREF(trace_obj);
-        return NULL;
-    }
-    PyTuple_SET_ITEM(trace_obj, 2, obj);
-
-    obj = PyLong_FromUnsignedLong(trace->traceback->total_nframe);
-    if (obj == NULL) {
-        Py_DECREF(trace_obj);
-        return NULL;
-    }
-    PyTuple_SET_ITEM(trace_obj, 3, obj);
-
-    return trace_obj;
-}
-
-
-typedef struct {
-    _Py_hashtable_t *traces;
-    _Py_hashtable_t *domains;
-    _Py_hashtable_t *tracebacks;
-    PyObject *list;
-    unsigned int domain;
-} get_traces_t;
-
-
-static int
-tracemalloc_copy_trace(_Py_hashtable_t *traces,
-                       const void *key, const void *value,
-                       void *user_data)
-{
-    _Py_hashtable_t *traces2 = (_Py_hashtable_t *)user_data;
-
-    trace_t *trace = (trace_t *)value;
-
-    trace_t *trace2 = raw_malloc(sizeof(trace_t));
-    if (trace2 == NULL) {
-        return -1;
-    }
-    *trace2 = *trace;
-    if (_Py_hashtable_set(traces2, key, trace2) < 0) {
-        raw_free(trace2);
-        return -1;
-    }
-    return 0;
-}
-
-
-static _Py_hashtable_t*
-tracemalloc_copy_traces(_Py_hashtable_t *traces)
-{
-    _Py_hashtable_t *traces2 = tracemalloc_create_traces_table();
-    if (traces2 == NULL) {
-        return NULL;
-    }
-
-    int err = _Py_hashtable_foreach(traces,
-                                    tracemalloc_copy_trace,
-                                    traces2);
-    if (err) {
-        _Py_hashtable_destroy(traces2);
-        return NULL;
-    }
-    return traces2;
-}
-
-
-static int
-tracemalloc_copy_domain(_Py_hashtable_t *domains,
-                        const void *key, const void *value,
-                        void *user_data)
-{
-    _Py_hashtable_t *domains2 = (_Py_hashtable_t *)user_data;
-
-    unsigned int domain = (unsigned int)FROM_PTR(key);
-    _Py_hashtable_t *traces = (_Py_hashtable_t *)value;
-
-    _Py_hashtable_t *traces2 = tracemalloc_copy_traces(traces);
-    if (traces2 == NULL) {
-        return -1;
-    }
-    if (_Py_hashtable_set(domains2, TO_PTR(domain), traces2) < 0) {
-        _Py_hashtable_destroy(traces2);
-        return -1;
-    }
-    return 0;
-}
-
-
-static _Py_hashtable_t*
-tracemalloc_copy_domains(_Py_hashtable_t *domains)
-{
-    _Py_hashtable_t *domains2 = tracemalloc_create_domains_table();
-    if (domains2 == NULL) {
-        return NULL;
-    }
-
-    int err = _Py_hashtable_foreach(domains,
-                                    tracemalloc_copy_domain,
-                                    domains2);
-    if (err) {
-        _Py_hashtable_destroy(domains2);
-        return NULL;
-    }
-    return domains2;
-}
-
-
-static int
-tracemalloc_get_traces_fill(_Py_hashtable_t *traces,
-                            const void *key, const void *value,
-                            void *user_data)
-{
-    get_traces_t *get_traces = user_data;
-
-    const trace_t *trace = (const trace_t *)value;
-
-    PyObject *tuple = trace_to_pyobject(get_traces->domain, trace,
-                                        get_traces->tracebacks);
-    if (tuple == NULL) {
-        return 1;
-    }
-
-    int res = PyList_Append(get_traces->list, tuple);
-    Py_DECREF(tuple);
-    if (res < 0) {
-        return 1;
-    }
-
-    return 0;
-}
-
-
-static int
-tracemalloc_get_traces_domain(_Py_hashtable_t *domains,
-                              const void *key, const void *value,
-                              void *user_data)
-{
-    get_traces_t *get_traces = user_data;
-
-    unsigned int domain = (unsigned int)FROM_PTR(key);
-    _Py_hashtable_t *traces = (_Py_hashtable_t *)value;
-
-    get_traces->domain = domain;
-    return _Py_hashtable_foreach(traces,
-                                 tracemalloc_get_traces_fill,
-                                 get_traces);
-}
-
-
-static void
-tracemalloc_pyobject_decref(void *value)
-{
-    PyObject *obj = (PyObject *)value;
-    Py_DECREF(obj);
-}
-
-
-
 /*[clinic input]
 _tracemalloc._get_traces
 
@@ -1279,107 +54,7 @@ static PyObject *
 _tracemalloc__get_traces_impl(PyObject *module)
 /*[clinic end generated code: output=e9929876ced4b5cc input=6c7d2230b24255aa]*/
 {
-    get_traces_t get_traces;
-    get_traces.domain = DEFAULT_DOMAIN;
-    get_traces.traces = NULL;
-    get_traces.domains = NULL;
-    get_traces.tracebacks = NULL;
-    get_traces.list = PyList_New(0);
-    if (get_traces.list == NULL)
-        goto error;
-
-    if (!tracemalloc_config.tracing)
-        return get_traces.list;
-
-    /* the traceback hash table is used temporarily to intern traceback tuple
-       of (filename, lineno) tuples */
-    get_traces.tracebacks = hashtable_new(_Py_hashtable_hash_ptr,
-                                          _Py_hashtable_compare_direct,
-                                          NULL, tracemalloc_pyobject_decref);
-    if (get_traces.tracebacks == NULL) {
-        goto no_memory;
-    }
-
-    // Copy all traces so tracemalloc_get_traces_fill() doesn't have to disable
-    // temporarily tracemalloc which would impact other threads and so would
-    // miss allocations while get_traces() is called.
-    TABLES_LOCK();
-    get_traces.traces = tracemalloc_copy_traces(tracemalloc_traces);
-    TABLES_UNLOCK();
-
-    if (get_traces.traces == NULL) {
-        goto no_memory;
-    }
-
-    TABLES_LOCK();
-    get_traces.domains = tracemalloc_copy_domains(tracemalloc_domains);
-    TABLES_UNLOCK();
-
-    if (get_traces.domains == NULL) {
-        goto no_memory;
-    }
-
-    // Convert traces to a list of tuples
-    set_reentrant(1);
-    int err = _Py_hashtable_foreach(get_traces.traces,
-                                    tracemalloc_get_traces_fill,
-                                    &get_traces);
-    if (!err) {
-        err = _Py_hashtable_foreach(get_traces.domains,
-                                    tracemalloc_get_traces_domain,
-                                    &get_traces);
-    }
-    set_reentrant(0);
-    if (err) {
-        goto error;
-    }
-
-    goto finally;
-
-no_memory:
-    PyErr_NoMemory();
-
-error:
-    Py_CLEAR(get_traces.list);
-
-finally:
-    if (get_traces.tracebacks != NULL) {
-        _Py_hashtable_destroy(get_traces.tracebacks);
-    }
-    if (get_traces.traces != NULL) {
-        _Py_hashtable_destroy(get_traces.traces);
-    }
-    if (get_traces.domains != NULL) {
-        _Py_hashtable_destroy(get_traces.domains);
-    }
-
-    return get_traces.list;
-}
-
-
-static traceback_t*
-tracemalloc_get_traceback(unsigned int domain, uintptr_t ptr)
-{
-
-    if (!tracemalloc_config.tracing)
-        return NULL;
-
-    trace_t *trace;
-    TABLES_LOCK();
-    _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
-    if (traces) {
-        trace = _Py_hashtable_get(traces, TO_PTR(ptr));
-    }
-    else {
-        trace = NULL;
-    }
-    TABLES_UNLOCK();
-
-    if (!trace) {
-        return NULL;
-    }
-
-    return trace->traceback;
+    return _PyTraceMalloc_GetTraces();
 }
 
 
@@ -1401,62 +76,9 @@ static PyObject *
 _tracemalloc__get_object_traceback(PyObject *module, PyObject *obj)
 /*[clinic end generated code: output=41ee0553a658b0aa input=29495f1b21c53212]*/
 {
-    PyTypeObject *type;
-    traceback_t *traceback;
-
-    type = Py_TYPE(obj);
-    const size_t presize = _PyType_PreHeaderSize(type);
-    uintptr_t ptr = (uintptr_t)((char *)obj - presize);
-
-    traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, ptr);
-    if (traceback == NULL) {
-        Py_RETURN_NONE;
-    }
-
-    return traceback_to_pyobject(traceback, NULL);
-}
-
-
-#define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str))
-
-static void
-_PyMem_DumpFrame(int fd, frame_t * frame)
-{
-    PUTS(fd, "  File \"");
-    _Py_DumpASCII(fd, frame->filename);
-    PUTS(fd, "\", line ");
-    _Py_DumpDecimal(fd, frame->lineno);
-    PUTS(fd, "\n");
-}
-
-/* Dump the traceback where a memory block was allocated into file descriptor
-   fd. The function may block on TABLES_LOCK() but it is unlikely. */
-void
-_PyMem_DumpTraceback(int fd, const void *ptr)
-{
-    traceback_t *traceback;
-    int i;
-
-    if (!tracemalloc_config.tracing) {
-        PUTS(fd, "Enable tracemalloc to get the memory block "
-                 "allocation traceback\n\n");
-        return;
-    }
-
-    traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, (uintptr_t)ptr);
-    if (traceback == NULL)
-        return;
-
-    PUTS(fd, "Memory block allocated at (most recent call first):\n");
-    for (i=0; i < traceback->nframe; i++) {
-        _PyMem_DumpFrame(fd, &traceback->frames[i]);
-    }
-    PUTS(fd, "\n");
+    return _PyTraceMalloc_GetObjectTraceback(obj);
 }
 
-#undef PUTS
-
-
 
 /*[clinic input]
 _tracemalloc.start
@@ -1474,7 +96,7 @@ static PyObject *
 _tracemalloc_start_impl(PyObject *module, int nframe)
 /*[clinic end generated code: output=caae05c23c159d3c input=40d849b5b29d1933]*/
 {
-    if (tracemalloc_start(nframe) < 0) {
+    if (_PyTraceMalloc_Start(nframe) < 0) {
         return NULL;
     }
     Py_RETURN_NONE;
@@ -1493,7 +115,7 @@ static PyObject *
 _tracemalloc_stop_impl(PyObject *module)
 /*[clinic end generated code: output=c3c42ae03e3955cd input=7478f075e51dae18]*/
 {
-    tracemalloc_stop();
+    _PyTraceMalloc_Stop();
     Py_RETURN_NONE;
 }
 
@@ -1511,22 +133,9 @@ static PyObject *
 _tracemalloc_get_traceback_limit_impl(PyObject *module)
 /*[clinic end generated code: output=d556d9306ba95567 input=da3cd977fc68ae3b]*/
 {
-    return PyLong_FromLong(tracemalloc_config.max_nframe);
-}
-
-
-static int
-tracemalloc_get_tracemalloc_memory_cb(_Py_hashtable_t *domains,
-                                      const void *key, const void *value,
-                                      void *user_data)
-{
-    const _Py_hashtable_t *traces = value;
-    size_t *size = (size_t*)user_data;
-    *size += _Py_hashtable_size(traces);
-    return 0;
+    return PyLong_FromLong(_PyTraceMalloc_GetTracebackLimit());
 }
 
-
 /*[clinic input]
 _tracemalloc.get_tracemalloc_memory
 
@@ -1539,22 +148,10 @@ static PyObject *
 _tracemalloc_get_tracemalloc_memory_impl(PyObject *module)
 /*[clinic end generated code: output=e3f14e280a55f5aa input=5d919c0f4d5132ad]*/
 {
-    size_t size;
-
-    size = _Py_hashtable_size(tracemalloc_tracebacks);
-    size += _Py_hashtable_size(tracemalloc_filenames);
-
-    TABLES_LOCK();
-    size += _Py_hashtable_size(tracemalloc_traces);
-    _Py_hashtable_foreach(tracemalloc_domains,
-                          tracemalloc_get_tracemalloc_memory_cb, &size);
-    TABLES_UNLOCK();
-
-    return PyLong_FromSize_t(size);
+    return PyLong_FromSize_t(_PyTraceMalloc_GetMemory());
 }
 
 
-
 /*[clinic input]
 _tracemalloc.get_traced_memory
 
@@ -1567,17 +164,7 @@ static PyObject *
 _tracemalloc_get_traced_memory_impl(PyObject *module)
 /*[clinic end generated code: output=5b167189adb9e782 input=61ddb5478400ff66]*/
 {
-    Py_ssize_t size, peak_size;
-
-    if (!tracemalloc_config.tracing)
-        return Py_BuildValue("ii", 0, 0);
-
-    TABLES_LOCK();
-    size = tracemalloc_traced_memory;
-    peak_size = tracemalloc_peak_traced_memory;
-    TABLES_UNLOCK();
-
-    return Py_BuildValue("nn", size, peak_size);
+    return _PyTraceMalloc_GetTracedMemory();
 }
 
 /*[clinic input]
@@ -1593,14 +180,7 @@ static PyObject *
 _tracemalloc_reset_peak_impl(PyObject *module)
 /*[clinic end generated code: output=140c2870f691dbb2 input=18afd0635066e9ce]*/
 {
-    if (!tracemalloc_config.tracing) {
-        Py_RETURN_NONE;
-    }
-
-    TABLES_LOCK();
-    tracemalloc_peak_traced_memory = tracemalloc_traced_memory;
-    TABLES_UNLOCK();
-
+    _PyTraceMalloc_ResetPeak();
     Py_RETURN_NONE;
 }
 
@@ -1640,118 +220,10 @@ PyInit__tracemalloc(void)
     if (m == NULL)
         return NULL;
 
-    if (tracemalloc_init() < 0) {
+    if (_PyTraceMalloc_Init() < 0) {
         Py_DECREF(m);
         return NULL;
     }
 
     return m;
 }
-
-
-int
-_PyTraceMalloc_Init(int nframe)
-{
-    assert(PyGILState_Check());
-    if (nframe == 0) {
-        return 0;
-    }
-    return tracemalloc_start(nframe);
-}
-
-
-void
-_PyTraceMalloc_Fini(void)
-{
-    assert(PyGILState_Check());
-    tracemalloc_deinit();
-}
-
-int
-PyTraceMalloc_Track(unsigned int domain, uintptr_t ptr,
-                    size_t size)
-{
-    int res;
-    PyGILState_STATE gil_state;
-
-    if (!tracemalloc_config.tracing) {
-        /* tracemalloc is not tracing: do nothing */
-        return -2;
-    }
-
-    gil_state = PyGILState_Ensure();
-
-    TABLES_LOCK();
-    res = tracemalloc_add_trace(domain, ptr, size);
-    TABLES_UNLOCK();
-
-    PyGILState_Release(gil_state);
-    return res;
-}
-
-
-int
-PyTraceMalloc_Untrack(unsigned int domain, uintptr_t ptr)
-{
-    if (!tracemalloc_config.tracing) {
-        /* tracemalloc is not tracing: do nothing */
-        return -2;
-    }
-
-    TABLES_LOCK();
-    tracemalloc_remove_trace(domain, ptr);
-    TABLES_UNLOCK();
-
-    return 0;
-}
-
-
-/* If the object memory block is already traced, update its trace
-   with the current Python traceback.
-
-   Do nothing if tracemalloc is not tracing memory allocations
-   or if the object memory block is not already traced. */
-int
-_PyTraceMalloc_NewReference(PyObject *op)
-{
-    assert(PyGILState_Check());
-
-    if (!tracemalloc_config.tracing) {
-        /* tracemalloc is not tracing: do nothing */
-        return -1;
-    }
-
-    PyTypeObject *type = Py_TYPE(op);
-    const size_t presize = _PyType_PreHeaderSize(type);
-    uintptr_t ptr = (uintptr_t)((char *)op - presize);
-
-    int res = -1;
-
-    TABLES_LOCK();
-    trace_t *trace = _Py_hashtable_get(tracemalloc_traces, TO_PTR(ptr));
-    if (trace != NULL) {
-        /* update the traceback of the memory block */
-        traceback_t *traceback = traceback_new();
-        if (traceback != NULL) {
-            trace->traceback = traceback;
-            res = 0;
-        }
-    }
-    /* else: cannot track the object, its memory block size is unknown */
-    TABLES_UNLOCK();
-
-    return res;
-}
-
-
-PyObject*
-_PyTraceMalloc_GetTraceback(unsigned int domain, uintptr_t ptr)
-{
-    traceback_t *traceback;
-
-    traceback = tracemalloc_get_traceback(domain, ptr);
-    if (traceback == NULL)
-        Py_RETURN_NONE;
-
-    return traceback_to_pyobject(traceback, NULL);
-}
diff --git a/Modules/_typingmodule.c b/Modules/_typingmodule.c
index 64286375636aff..9ea72bf89ce0b2 100644
--- a/Modules/_typingmodule.c
+++ b/Modules/_typingmodule.c
@@ -1,6 +1,13 @@
 /* typing accelerator C extension: _typing module. */
 
+#ifndef Py_BUILD_CORE
+#define Py_BUILD_CORE
+#endif
+
 #include "Python.h"
+#include "pycore_interp.h"
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_typevarobject.h"
 #include "clinic/_typingmodule.c.h"
 
 /*[clinic input]
@@ -33,9 +40,34 @@ static PyMethodDef typing_methods[] = {
 };
 
 PyDoc_STRVAR(typing_doc,
-"Accelerators for the typing module.\n");
+"Primitives and accelerators for the typing module.\n");
+
+static int
+_typing_exec(PyObject *m)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+
+#define EXPORT_TYPE(name, typename) \
+    if (PyModule_AddObjectRef(m, name, \
+                              (PyObject *)interp->cached_objects.typename) < 0) { \
+        return -1; \
+    }
+
+    EXPORT_TYPE("TypeVar", typevar_type);
+    EXPORT_TYPE("TypeVarTuple", typevartuple_type);
+    EXPORT_TYPE("ParamSpec", paramspec_type);
+    EXPORT_TYPE("ParamSpecArgs", paramspecargs_type);
+    EXPORT_TYPE("ParamSpecKwargs", paramspeckwargs_type);
+    EXPORT_TYPE("Generic", generic_type);
+#undef EXPORT_TYPE
+    if (PyModule_AddObjectRef(m, "TypeAliasType", (PyObject *)&_PyTypeAlias_Type) < 0) {
+        return -1;
+    }
+    return 0;
+}
 
 static struct PyModuleDef_Slot _typingmodule_slots[] = {
+    {Py_mod_exec, _typing_exec},
     {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
     {0, NULL}
 };
diff --git a/Modules/_uuidmodule.c b/Modules/_uuidmodule.c
index ed3b2fedfd4d88..d8b211c632eef1 100644
--- a/Modules/_uuidmodule.c
+++ b/Modules/_uuidmodule.c
@@ -3,7 +3,14 @@
  * DCE compatible Universally Unique Identifier library.
  */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
+#endif
 
 #include "Python.h"
 #if defined(HAVE_UUID_H)
diff --git a/Modules/_weakref.c b/Modules/_weakref.c
index 387b8fa9d0a6f1..7225dbc9ce4a1b 100644
--- a/Modules/_weakref.c
+++ b/Modules/_weakref.c
@@ -1,6 +1,7 @@
 #include "Python.h"
-#include "pycore_object.h"   // _PyObject_GET_WEAKREFS_LISTPTR
-
+#include "pycore_dict.h"              // _PyDict_DelItemIf()
+#include "pycore_object.h"            // _PyObject_GET_WEAKREFS_LISTPTR()
+#include "pycore_weakref.h"           // _PyWeakref_IS_DEAD()
 
 #define GET_WEAKREFS_LISTPTR(o) \
         ((PyWeakReference **) _PyObject_GET_WEAKREFS_LISTPTR(o))
@@ -13,7 +14,7 @@ module _weakref
 #include "clinic/_weakref.c.h"
 
 /*[clinic input]
-
+@critical_section object
 _weakref.getweakrefcount -> Py_ssize_t
 
   object: object
@@ -24,15 +25,14 @@ Return the number of weak references to 'object'.
 
 static Py_ssize_t
 _weakref_getweakrefcount_impl(PyObject *module, PyObject *object)
-/*[clinic end generated code: output=301806d59558ff3e input=cedb69711b6a2507]*/
+/*[clinic end generated code: output=301806d59558ff3e input=6535a580f1d0ebdc]*/
 {
-    PyWeakReference **list;
-
-    if (!_PyType_SUPPORTS_WEAKREFS(Py_TYPE(object)))
+    if (!_PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
         return 0;
-
-    list = GET_WEAKREFS_LISTPTR(object);
-    return _PyWeakref_GetWeakrefCount(*list);
+    }
+    PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
+    Py_ssize_t count = _PyWeakref_GetWeakrefCount(*list);
+    return count;
 }
 
 
@@ -43,7 +43,7 @@ is_dead_weakref(PyObject *value)
         PyErr_SetString(PyExc_TypeError, "not a weakref");
         return -1;
     }
-    return PyWeakref_GET_OBJECT(value) == Py_None;
+    return _PyWeakref_IS_DEAD(value);
 }
 
 /*[clinic input]
@@ -77,6 +77,7 @@ _weakref__remove_dead_weakref_impl(PyObject *module, PyObject *dct,
 
 
 /*[clinic input]
+@critical_section object
 _weakref.getweakrefs
     object: object
     /
@@ -85,28 +86,25 @@ Return a list of all weak reference objects pointing to 'object'.
 [clinic start generated code]*/
 
 static PyObject *
-_weakref_getweakrefs(PyObject *module, PyObject *object)
-/*[clinic end generated code: output=25c7731d8e011824 input=00c6d0e5d3206693]*/
+_weakref_getweakrefs_impl(PyObject *module, PyObject *object)
+/*[clinic end generated code: output=5ec268989fb8f035 input=3dea95b8f5b31bbb]*/
 {
-    PyObject *result = NULL;
-
-    if (_PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
-        PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
-        Py_ssize_t count = _PyWeakref_GetWeakrefCount(*list);
-
-        result = PyList_New(count);
-        if (result != NULL) {
-            PyWeakReference *current = *list;
-            Py_ssize_t i;
-            for (i = 0; i < count; ++i) {
-                PyList_SET_ITEM(result, i, (PyObject *) current);
-                Py_INCREF(current);
-                current = current->wr_next;
-            }
-        }
+    if (!_PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
+        return PyList_New(0);
     }
-    else {
-        result = PyList_New(0);
+
+    PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
+    Py_ssize_t count = _PyWeakref_GetWeakrefCount(*list);
+
+    PyObject *result = PyList_New(count);
+    if (result == NULL) {
+        return NULL;
+    }
+
+    PyWeakReference *current = *list;
+    for (Py_ssize_t i = 0; i < count; ++i) {
+        PyList_SET_ITEM(result, i, Py_NewRef(current));
+        current = current->wr_next;
     }
     return result;
 }
@@ -145,27 +143,19 @@ weakref_functions[] =  {
 static int
 weakref_exec(PyObject *module)
 {
-    Py_INCREF(&_PyWeakref_RefType);
-    if (PyModule_AddObject(module, "ref", (PyObject *) &_PyWeakref_RefType) < 0) {
-        Py_DECREF(&_PyWeakref_RefType);
+    if (PyModule_AddObjectRef(module, "ref", (PyObject *) &_PyWeakref_RefType) < 0) {
         return -1;
     }
-    Py_INCREF(&_PyWeakref_RefType);
-    if (PyModule_AddObject(module, "ReferenceType",
+    if (PyModule_AddObjectRef(module, "ReferenceType",
                            (PyObject *) &_PyWeakref_RefType) < 0) {
-        Py_DECREF(&_PyWeakref_RefType);
         return -1;
     }
-    Py_INCREF(&_PyWeakref_ProxyType);
-    if (PyModule_AddObject(module, "ProxyType",
+    if (PyModule_AddObjectRef(module, "ProxyType",
                            (PyObject *) &_PyWeakref_ProxyType) < 0) {
-        Py_DECREF(&_PyWeakref_ProxyType);
         return -1;
     }
-    Py_INCREF(&_PyWeakref_CallableProxyType);
-    if (PyModule_AddObject(module, "CallableProxyType",
+    if (PyModule_AddObjectRef(module, "CallableProxyType",
                            (PyObject *) &_PyWeakref_CallableProxyType) < 0) {
-        Py_DECREF(&_PyWeakref_CallableProxyType);
         return -1;
     }
 
diff --git a/Modules/_winapi.c b/Modules/_winapi.c
index 473bcb4736e925..8c48b6f3ec6ef6 100644
--- a/Modules/_winapi.c
+++ b/Modules/_winapi.c
@@ -36,7 +36,9 @@
 
 #include "Python.h"
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_pylifecycle.h"   // _Py_IsInterpreterFinalizing()
+#include "pycore_pystate.h"       // _PyInterpreterState_GET
+
 
 
 #ifndef WINDOWS_LEAN_AND_MEAN
@@ -52,13 +54,13 @@
     PyLong_FromUnsignedLong((unsigned long) handle)
 #define PYNUM_TO_HANDLE(obj) ((HANDLE)PyLong_AsUnsignedLong(obj))
 #define F_POINTER "k"
-#define T_POINTER T_ULONG
+#define T_POINTER Py_T_ULONG
 #else
 #define HANDLE_TO_PYNUM(handle) \
     PyLong_FromUnsignedLongLong((unsigned long long) handle)
 #define PYNUM_TO_HANDLE(obj) ((HANDLE)PyLong_AsUnsignedLongLong(obj))
 #define F_POINTER "K"
-#define T_POINTER T_ULONGLONG
+#define T_POINTER Py_T_ULONGLONG
 #endif
 
 #define F_HANDLE F_POINTER
@@ -133,7 +135,7 @@ overlapped_dealloc(OverlappedObject *self)
         {
             /* The operation is no longer pending -- nothing to do. */
         }
-        else if (_Py_IsFinalizing())
+        else if (_Py_IsInterpreterFinalizing(_PyInterpreterState_GET()))
         {
             /* The operation is still pending -- give a warning.  This
                will probably only happen on Windows XP. */
@@ -210,7 +212,7 @@ class DWORD_return_converter(CReturnConverter):
         self.declare(data)
         self.err_occurred_if("_return_value == PY_DWORD_MAX", data)
         data.return_conversion.append(
-            'return_value = Py_BuildValue("k", _return_value);\n')
+            'return_value = PyLong_FromUnsignedLong(_return_value);\n')
 
 class LPVOID_return_converter(CReturnConverter):
     type = 'LPVOID'
@@ -221,7 +223,7 @@ class LPVOID_return_converter(CReturnConverter):
         data.return_conversion.append(
             'return_value = HANDLE_TO_PYNUM(_return_value);\n')
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=011ee0c3a2244bfe]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=ef52a757a1830d92]*/
 
 #include "clinic/_winapi.c.h"
 
@@ -320,7 +322,7 @@ static PyMethodDef overlapped_methods[] = {
 static PyMemberDef overlapped_members[] = {
     {"event", T_HANDLE,
      offsetof(OverlappedObject, overlapped) + offsetof(OVERLAPPED, hEvent),
-     READONLY, "overlapped event handle"},
+     Py_READONLY, "overlapped event handle"},
     {NULL}
 };
 
@@ -796,6 +798,17 @@ getenvironment(PyObject* environment)
     }
 
     envsize = PyList_GET_SIZE(keys);
+
+    if (envsize == 0) {
+        // A environment block must be terminated by two null characters --
+        // one for the last string and one for the block.
+        buffer = PyMem_Calloc(2, sizeof(wchar_t));
+        if (!buffer) {
+            PyErr_NoMemory();
+        }
+        goto cleanup;
+    }
+
     if (PyList_GET_SIZE(values) != envsize) {
         PyErr_SetString(PyExc_RuntimeError,
             "environment changed size during iteration");
@@ -869,7 +882,8 @@ getenvironment(PyObject* environment)
     *p++ = L'\0';
     assert(p == end);
 
- error:
+cleanup:
+error:
     Py_XDECREF(keys);
     Py_XDECREF(values);
     return buffer;
@@ -1058,14 +1072,13 @@ process ID, and thread ID.
 [clinic start generated code]*/
 
 static PyObject *
-_winapi_CreateProcess_impl(PyObject *module,
-                           const Py_UNICODE *application_name,
+_winapi_CreateProcess_impl(PyObject *module, const wchar_t *application_name,
                            PyObject *command_line, PyObject *proc_attrs,
                            PyObject *thread_attrs, BOOL inherit_handles,
                            DWORD creation_flags, PyObject *env_mapping,
-                           const Py_UNICODE *current_directory,
+                           const wchar_t *current_directory,
                            PyObject *startup_info)
-/*[clinic end generated code: output=9b2423a609230132 input=42ac293eaea03fc4]*/
+/*[clinic end generated code: output=a25c8e49ea1d6427 input=42ac293eaea03fc4]*/
 {
     PyObject *ret = NULL;
     BOOL result;
@@ -1526,40 +1539,56 @@ _winapi.LCMapStringEx
 
     locale: LPCWSTR
     flags: DWORD
-    src: LPCWSTR
+    src: unicode
 
 [clinic start generated code]*/
 
 static PyObject *
 _winapi_LCMapStringEx_impl(PyObject *module, LPCWSTR locale, DWORD flags,
-                           LPCWSTR src)
-/*[clinic end generated code: output=cf4713d80e2b47c9 input=9fe26f95d5ab0001]*/
+                           PyObject *src)
+/*[clinic end generated code: output=b90e6b26e028ff0a input=3e3dcd9b8164012f]*/
 {
     if (flags & (LCMAP_SORTHANDLE | LCMAP_HASH | LCMAP_BYTEREV |
                  LCMAP_SORTKEY)) {
         return PyErr_Format(PyExc_ValueError, "unsupported flags");
     }
 
-    int dest_size = LCMapStringEx(locale, flags, src, -1, NULL, 0,
+    Py_ssize_t src_size;
+    wchar_t *src_ = PyUnicode_AsWideCharString(src, &src_size);
+    if (!src_) {
+        return NULL;
+    }
+    if (src_size > INT_MAX) {
+        PyMem_Free(src_);
+        PyErr_SetString(PyExc_OverflowError, "input string is too long");
+        return NULL;
+    }
+
+    int dest_size = LCMapStringEx(locale, flags, src_, (int)src_size, NULL, 0,
                                   NULL, NULL, 0);
-    if (dest_size == 0) {
-        return PyErr_SetFromWindowsErr(0);
+    if (dest_size <= 0) {
+        DWORD error = GetLastError();
+        PyMem_Free(src_);
+        return PyErr_SetFromWindowsErr(error);
     }
 
     wchar_t* dest = PyMem_NEW(wchar_t, dest_size);
     if (dest == NULL) {
+        PyMem_Free(src_);
         return PyErr_NoMemory();
     }
 
-    int nmapped = LCMapStringEx(locale, flags, src, -1, dest, dest_size,
+    int nmapped = LCMapStringEx(locale, flags, src_, (int)src_size, dest, dest_size,
                                 NULL, NULL, 0);
-    if (nmapped == 0) {
+    if (nmapped <= 0) {
         DWORD error = GetLastError();
+        PyMem_Free(src_);
         PyMem_DEL(dest);
         return PyErr_SetFromWindowsErr(error);
     }
 
-    PyObject *ret = PyUnicode_FromWideChar(dest, dest_size - 1);
+    PyMem_Free(src_);
+    PyObject *ret = PyUnicode_FromWideChar(dest, nmapped);
     PyMem_DEL(dest);
 
     return ret;
@@ -1947,6 +1976,7 @@ _winapi_GetFileType_impl(PyObject *module, HANDLE handle)
     return result;
 }
 
+
 /*[clinic input]
 _winapi._mimetypes_read_windows_registry
 
@@ -2075,6 +2105,67 @@ _winapi_NeedCurrentDirectoryForExePath_impl(PyObject *module,
     return result;
 }
 
+
+/*[clinic input]
+_winapi.CopyFile2
+
+    existing_file_name: LPCWSTR
+    new_file_name: LPCWSTR
+    flags: DWORD
+    progress_routine: object = None
+
+Copies a file from one name to a new name.
+
+This is implemented using the CopyFile2 API, which preserves all stat
+and metadata information apart from security attributes.
+
+progress_routine is reserved for future use, but is currently not
+implemented. Its value is ignored.
+[clinic start generated code]*/
+
+static PyObject *
+_winapi_CopyFile2_impl(PyObject *module, LPCWSTR existing_file_name,
+                       LPCWSTR new_file_name, DWORD flags,
+                       PyObject *progress_routine)
+/*[clinic end generated code: output=43d960d9df73d984 input=fb976b8d1492d130]*/
+{
+    HRESULT hr;
+    COPYFILE2_EXTENDED_PARAMETERS params = { sizeof(COPYFILE2_EXTENDED_PARAMETERS) };
+
+    if (PySys_Audit("_winapi.CopyFile2", "uuI",
+                    existing_file_name, new_file_name, flags) < 0) {
+        return NULL;
+    }
+
+    params.dwCopyFlags = flags;
+    /* For future implementation. We ignore the value for now so that
+       users only have to test for 'CopyFile2' existing and not whether
+       the additional parameter exists.
+    if (progress_routine != Py_None) {
+        params.pProgressRoutine = _winapi_CopyFile2ProgressRoutine;
+        params.pvCallbackContext = Py_NewRef(progress_routine);
+    }
+    */
+    Py_BEGIN_ALLOW_THREADS;
+    hr = CopyFile2(existing_file_name, new_file_name, &params);
+    Py_END_ALLOW_THREADS;
+    /* For future implementation.
+    if (progress_routine != Py_None) {
+        Py_DECREF(progress_routine);
+    }
+    */
+    if (FAILED(hr)) {
+        if ((hr & 0xFFFF0000) == 0x80070000) {
+            PyErr_SetFromWindowsErr(hr & 0xFFFF);
+        } else {
+            PyErr_SetFromWindowsErr(hr);
+        }
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+
 static PyMethodDef winapi_functions[] = {
     _WINAPI_CLOSEHANDLE_METHODDEF
     _WINAPI_CONNECTNAMEDPIPE_METHODDEF
@@ -2110,6 +2201,7 @@ static PyMethodDef winapi_functions[] = {
     _WINAPI_GETFILETYPE_METHODDEF
     _WINAPI__MIMETYPES_READ_WINDOWS_REGISTRY_METHODDEF
     _WINAPI_NEEDCURRENTDIRECTORYFOREXEPATH_METHODDEF
+    _WINAPI_COPYFILE2_METHODDEF
     {NULL, NULL}
 };
 
@@ -2146,6 +2238,7 @@ static int winapi_exec(PyObject *m)
     WINAPI_CONSTANT(F_DWORD, CREATE_NEW_PROCESS_GROUP);
     WINAPI_CONSTANT(F_DWORD, DUPLICATE_SAME_ACCESS);
     WINAPI_CONSTANT(F_DWORD, DUPLICATE_CLOSE_SOURCE);
+    WINAPI_CONSTANT(F_DWORD, ERROR_ACCESS_DENIED);
     WINAPI_CONSTANT(F_DWORD, ERROR_ALREADY_EXISTS);
     WINAPI_CONSTANT(F_DWORD, ERROR_BROKEN_PIPE);
     WINAPI_CONSTANT(F_DWORD, ERROR_IO_PENDING);
@@ -2159,6 +2252,7 @@ static int winapi_exec(PyObject *m)
     WINAPI_CONSTANT(F_DWORD, ERROR_OPERATION_ABORTED);
     WINAPI_CONSTANT(F_DWORD, ERROR_PIPE_BUSY);
     WINAPI_CONSTANT(F_DWORD, ERROR_PIPE_CONNECTED);
+    WINAPI_CONSTANT(F_DWORD, ERROR_PRIVILEGE_NOT_HELD);
     WINAPI_CONSTANT(F_DWORD, ERROR_SEM_TIMEOUT);
     WINAPI_CONSTANT(F_DWORD, FILE_FLAG_FIRST_PIPE_INSTANCE);
     WINAPI_CONSTANT(F_DWORD, FILE_FLAG_OVERLAPPED);
@@ -2252,6 +2346,34 @@ static int winapi_exec(PyObject *m)
     WINAPI_CONSTANT(F_DWORD, LCMAP_TRADITIONAL_CHINESE);
     WINAPI_CONSTANT(F_DWORD, LCMAP_UPPERCASE);
 
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_ALLOW_DECRYPTED_DESTINATION);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_COPY_SYMLINK);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_FAIL_IF_EXISTS);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_NO_BUFFERING);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_NO_OFFLOAD);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_OPEN_SOURCE_FOR_WRITE);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_RESTARTABLE);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_REQUEST_SECURITY_PRIVILEGES);
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_RESUME_FROM_PAUSE);
+#ifndef COPY_FILE_REQUEST_COMPRESSED_TRAFFIC
+    // Only defined in newer WinSDKs
+    #define COPY_FILE_REQUEST_COMPRESSED_TRAFFIC 0x10000000
+#endif
+    WINAPI_CONSTANT(F_DWORD, COPY_FILE_REQUEST_COMPRESSED_TRAFFIC);
+
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_CALLBACK_CHUNK_STARTED);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_CALLBACK_CHUNK_FINISHED);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_CALLBACK_STREAM_STARTED);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_CALLBACK_STREAM_FINISHED);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_CALLBACK_POLL_CONTINUE);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_CALLBACK_ERROR);
+
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_PROGRESS_CONTINUE);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_PROGRESS_CANCEL);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_PROGRESS_STOP);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_PROGRESS_QUIET);
+    WINAPI_CONSTANT(F_DWORD, COPYFILE2_PROGRESS_PAUSE);
+
     WINAPI_CONSTANT("i", NULL);
 
     return 0;
diff --git a/Modules/_xxinterpchannelsmodule.c b/Modules/_xxinterpchannelsmodule.c
index 616dd577688116..1c9ae3b87adf7c 100644
--- a/Modules/_xxinterpchannelsmodule.c
+++ b/Modules/_xxinterpchannelsmodule.c
@@ -1,13 +1,22 @@
-
 /* interpreters module */
 /* low-level access to interpreter primitives */
+
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
 #include "Python.h"
-#include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "pycore_interpreteridobject.h"
+#include "interpreteridobject.h"
+#include "pycore_crossinterp.h"   // struct _xid
+#include "pycore_pybuffer.h"      // _PyBuffer_ReleaseInInterpreterAndRawFree()
+#include "pycore_interp.h"        // _PyInterpreterState_LookUpID()
+
+#ifdef MS_WINDOWS
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>        // SwitchToThread()
+#elif defined(HAVE_SCHED_H)
+#include <sched.h>          // sched_yield()
+#endif
 
 
 /*
@@ -20,7 +29,7 @@ _globals (static struct globals):
         next_id; (int64_t)
         mutex (PyThread_type_lock)
         head (linked list of struct _channelref *):
-            id (int64_t)
+            cid (int64_t)
             objcount (Py_ssize_t)
             next (struct _channelref *):
                 ...
@@ -34,7 +43,7 @@ _globals (static struct globals):
                     numsendopen (int64_t)
                     numrecvopen (int64_t)
                     send (struct _channelend *):
-                        interp (int64_t)
+                        interpid (int64_t)
                         open (int)
                         next (struct _channelend *)
                     recv (struct _channelend *):
@@ -47,7 +56,7 @@ _globals (static struct globals):
                         data (_PyCrossInterpreterData *):
                             data (void *)
                             obj (PyObject *)
-                            interp (int64_t)
+                            interpid (int64_t)
                             new_object (xid_newobjectfunc)
                             free (xid_freefunc)
                     last (struct _channelitem *):
@@ -81,6 +90,73 @@ API..  The module does not create any objects that are shared globally.
     PyMem_RawFree(VAR)
 
 
+struct xid_class_registry {
+    size_t count;
+#define MAX_XID_CLASSES 5
+    struct {
+        PyTypeObject *cls;
+    } added[MAX_XID_CLASSES];
+};
+
+static int
+register_xid_class(PyTypeObject *cls, crossinterpdatafunc shared,
+                   struct xid_class_registry *classes)
+{
+    int res = _PyCrossInterpreterData_RegisterClass(cls, shared);
+    if (res == 0) {
+        assert(classes->count < MAX_XID_CLASSES);
+        // The class has refs elsewhere, so we need to incref here.
+        classes->added[classes->count].cls = cls;
+        classes->count += 1;
+    }
+    return res;
+}
+
+static void
+clear_xid_class_registry(struct xid_class_registry *classes)
+{
+    while (classes->count > 0) {
+        classes->count -= 1;
+        PyTypeObject *cls = classes->added[classes->count].cls;
+        _PyCrossInterpreterData_UnregisterClass(cls);
+    }
+}
+
+#define XID_IGNORE_EXC 1
+#define XID_FREE 2
+
+static int
+_release_xid_data(_PyCrossInterpreterData *data, int flags)
+{
+    int ignoreexc = flags & XID_IGNORE_EXC;
+    PyObject *exc;
+    if (ignoreexc) {
+        exc = PyErr_GetRaisedException();
+    }
+    int res;
+    if (flags & XID_FREE) {
+        res = _PyCrossInterpreterData_ReleaseAndRawFree(data);
+    }
+    else {
+        res = _PyCrossInterpreterData_Release(data);
+    }
+    if (res < 0) {
+        /* The owning interpreter is already destroyed. */
+        if (ignoreexc) {
+            // XXX Emit a warning?
+            PyErr_Clear();
+        }
+    }
+    if (flags & XID_FREE) {
+        /* Either way, we free the data. */
+    }
+    if (ignoreexc) {
+        PyErr_SetRaisedException(exc);
+    }
+    return res;
+}
+
+
 static PyInterpreterState *
 _get_current_interp(void)
 {
@@ -128,7 +204,7 @@ get_module_from_type(PyTypeObject *cls)
 static PyObject *
 add_new_exception(PyObject *mod, const char *name, PyObject *base)
 {
-    assert(!PyObject_HasAttrString(mod, name));
+    assert(!PyObject_HasAttrStringWithError(mod, name));
     PyObject *exctype = PyErr_NewException(name, base, NULL);
     if (exctype == NULL) {
         return NULL;
@@ -145,10 +221,11 @@ add_new_exception(PyObject *mod, const char *name, PyObject *base)
     add_new_exception(MOD, MODULE_NAME "." Py_STRINGIFY(NAME), BASE)
 
 static PyTypeObject *
-add_new_type(PyObject *mod, PyType_Spec *spec, crossinterpdatafunc shared)
+add_new_type(PyObject *mod, PyType_Spec *spec, crossinterpdatafunc shared,
+             struct xid_class_registry *classes)
 {
-    PyTypeObject *cls = (PyTypeObject *)PyType_FromMetaclass(
-                NULL, mod, spec, NULL);
+    PyTypeObject *cls = (PyTypeObject *)PyType_FromModuleAndSpec(
+                mod, spec, NULL);
     if (cls == NULL) {
         return NULL;
     }
@@ -157,7 +234,7 @@ add_new_type(PyObject *mod, PyType_Spec *spec, crossinterpdatafunc shared)
         return NULL;
     }
     if (shared != NULL) {
-        if (_PyCrossInterpreterData_RegisterClass(cls, shared)) {
+        if (register_xid_class(cls, shared, classes)) {
             Py_DECREF(cls);
             return NULL;
         }
@@ -166,32 +243,169 @@ add_new_type(PyObject *mod, PyType_Spec *spec, crossinterpdatafunc shared)
 }
 
 static int
-_release_xid_data(_PyCrossInterpreterData *data, int ignoreexc)
+wait_for_lock(PyThread_type_lock mutex, PY_TIMEOUT_T timeout)
 {
-    PyObject *exc;
-    if (ignoreexc) {
-        exc = PyErr_GetRaisedException();
+    PyLockStatus res = PyThread_acquire_lock_timed_with_retries(mutex, timeout);
+    if (res == PY_LOCK_INTR) {
+        /* KeyboardInterrupt, etc. */
+        assert(PyErr_Occurred());
+        return -1;
     }
-    int res = _PyCrossInterpreterData_Release(data);
-    if (res < 0) {
-        /* The owning interpreter is already destroyed. */
-        if (ignoreexc) {
-            // XXX Emit a warning?
-            PyErr_Clear();
-        }
+    else if (res == PY_LOCK_FAILURE) {
+        assert(!PyErr_Occurred());
+        assert(timeout > 0);
+        PyErr_SetString(PyExc_TimeoutError, "timed out");
+        return -1;
     }
-    if (ignoreexc) {
-        PyErr_SetRaisedException(exc);
+    assert(res == PY_LOCK_ACQUIRED);
+    PyThread_release_lock(mutex);
+    return 0;
+}
+
+
+/* Cross-interpreter Buffer Views *******************************************/
+
+// XXX Release when the original interpreter is destroyed.
+
+typedef struct {
+    PyObject_HEAD
+    Py_buffer *view;
+    int64_t interpid;
+} XIBufferViewObject;
+
+static PyObject *
+xibufferview_from_xid(PyTypeObject *cls, _PyCrossInterpreterData *data)
+{
+    assert(data->data != NULL);
+    assert(data->obj == NULL);
+    assert(data->interpid >= 0);
+    XIBufferViewObject *self = PyObject_Malloc(sizeof(XIBufferViewObject));
+    if (self == NULL) {
+        return NULL;
     }
-    return res;
+    PyObject_Init((PyObject *)self, cls);
+    self->view = (Py_buffer *)data->data;
+    self->interpid = data->interpid;
+    return (PyObject *)self;
+}
+
+static void
+xibufferview_dealloc(XIBufferViewObject *self)
+{
+    PyInterpreterState *interp = _PyInterpreterState_LookUpID(self->interpid);
+    /* If the interpreter is no longer alive then we have problems,
+       since other objects may be using the buffer still. */
+    assert(interp != NULL);
+
+    if (_PyBuffer_ReleaseInInterpreterAndRawFree(interp, self->view) < 0) {
+        // XXX Emit a warning?
+        PyErr_Clear();
+    }
+
+    PyTypeObject *tp = Py_TYPE(self);
+    tp->tp_free(self);
+    /* "Instances of heap-allocated types hold a reference to their type."
+     * See: https://docs.python.org/3.11/howto/isolating-extensions.html#garbage-collection-protocol
+     * See: https://docs.python.org/3.11/c-api/typeobj.html#c.PyTypeObject.tp_traverse
+    */
+    // XXX Why don't we implement Py_TPFLAGS_HAVE_GC, e.g. Py_tp_traverse,
+    // like we do for _abc._abc_data?
+    Py_DECREF(tp);
+}
+
+static int
+xibufferview_getbuf(XIBufferViewObject *self, Py_buffer *view, int flags)
+{
+    /* Only PyMemoryView_FromObject() should ever call this,
+       via _memoryview_from_xid() below. */
+    *view = *self->view;
+    view->obj = (PyObject *)self;
+    // XXX Should we leave it alone?
+    view->internal = NULL;
+    return 0;
+}
+
+static PyType_Slot XIBufferViewType_slots[] = {
+    {Py_tp_dealloc, (destructor)xibufferview_dealloc},
+    {Py_bf_getbuffer, (getbufferproc)xibufferview_getbuf},
+    // We don't bother with Py_bf_releasebuffer since we don't need it.
+    {0, NULL},
+};
+
+static PyType_Spec XIBufferViewType_spec = {
+    .name = MODULE_NAME ".CrossInterpreterBufferView",
+    .basicsize = sizeof(XIBufferViewObject),
+    .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+              Py_TPFLAGS_DISALLOW_INSTANTIATION | Py_TPFLAGS_IMMUTABLETYPE),
+    .slots = XIBufferViewType_slots,
+};
+
+
+/* extra XID types **********************************************************/
+
+static PyTypeObject * _get_current_xibufferview_type(void);
+
+static PyObject *
+_memoryview_from_xid(_PyCrossInterpreterData *data)
+{
+    PyTypeObject *cls = _get_current_xibufferview_type();
+    if (cls == NULL) {
+        return NULL;
+    }
+    PyObject *obj = xibufferview_from_xid(cls, data);
+    if (obj == NULL) {
+        return NULL;
+    }
+    return PyMemoryView_FromObject(obj);
+}
+
+static int
+_memoryview_shared(PyThreadState *tstate, PyObject *obj,
+                   _PyCrossInterpreterData *data)
+{
+    Py_buffer *view = PyMem_RawMalloc(sizeof(Py_buffer));
+    if (view == NULL) {
+        return -1;
+    }
+    if (PyObject_GetBuffer(obj, view, PyBUF_FULL_RO) < 0) {
+        PyMem_RawFree(view);
+        return -1;
+    }
+    _PyCrossInterpreterData_Init(data, tstate->interp, view, NULL,
+                                 _memoryview_from_xid);
+    return 0;
+}
+
+static int
+register_builtin_xid_types(struct xid_class_registry *classes)
+{
+    PyTypeObject *cls;
+    crossinterpdatafunc func;
+
+    // builtin memoryview
+    cls = &PyMemoryView_Type;
+    func = _memoryview_shared;
+    if (register_xid_class(cls, func, classes)) {
+        return -1;
+    }
+
+    return 0;
 }
 
 
 /* module state *************************************************************/
 
 typedef struct {
+    struct xid_class_registry xid_classes;
+
+    /* Added at runtime by interpreters module. */
+    PyTypeObject *send_channel_type;
+    PyTypeObject *recv_channel_type;
+
     /* heap types */
+    PyTypeObject *ChannelInfoType;
     PyTypeObject *ChannelIDType;
+    PyTypeObject *XIBufferViewType;
 
     /* exceptions */
     PyObject *ChannelError;
@@ -210,11 +424,32 @@ get_module_state(PyObject *mod)
     return state;
 }
 
+static module_state *
+_get_current_module_state(void)
+{
+    PyObject *mod = _get_current_module();
+    if (mod == NULL) {
+        // XXX import it?
+        PyErr_SetString(PyExc_RuntimeError,
+                        MODULE_NAME " module not imported yet");
+        return NULL;
+    }
+    module_state *state = get_module_state(mod);
+    Py_DECREF(mod);
+    return state;
+}
+
 static int
 traverse_module_state(module_state *state, visitproc visit, void *arg)
 {
+    /* external types */
+    Py_VISIT(state->send_channel_type);
+    Py_VISIT(state->recv_channel_type);
+
     /* heap types */
+    Py_VISIT(state->ChannelInfoType);
     Py_VISIT(state->ChannelIDType);
+    Py_VISIT(state->XIBufferViewType);
 
     /* exceptions */
     Py_VISIT(state->ChannelError);
@@ -229,11 +464,17 @@ traverse_module_state(module_state *state, visitproc visit, void *arg)
 static int
 clear_module_state(module_state *state)
 {
+    /* external types */
+    Py_CLEAR(state->send_channel_type);
+    Py_CLEAR(state->recv_channel_type);
+
     /* heap types */
+    Py_CLEAR(state->ChannelInfoType);
     if (state->ChannelIDType != NULL) {
         (void)_PyCrossInterpreterData_UnregisterClass(state->ChannelIDType);
     }
     Py_CLEAR(state->ChannelIDType);
+    Py_CLEAR(state->XIBufferViewType);
 
     /* exceptions */
     Py_CLEAR(state->ChannelError);
@@ -246,12 +487,24 @@ clear_module_state(module_state *state)
 }
 
 
+static PyTypeObject *
+_get_current_xibufferview_type(void)
+{
+    module_state *state = _get_current_module_state();
+    if (state == NULL) {
+        return NULL;
+    }
+    return state->XIBufferViewType;
+}
+
+
 /* channel-specific code ****************************************************/
 
 #define CHANNEL_SEND 1
 #define CHANNEL_BOTH 0
 #define CHANNEL_RECV -1
 
+
 /* channel errors */
 
 #define ERR_CHANNEL_NOT_FOUND -2
@@ -262,6 +515,7 @@ clear_module_state(module_state *state)
 #define ERR_CHANNEL_MUTEX_INIT -7
 #define ERR_CHANNELS_MUTEX_INIT -8
 #define ERR_NO_NEXT_CHANNEL_ID -9
+#define ERR_CHANNEL_CLOSED_WAITING -10
 
 static int
 exceptions_init(PyObject *mod)
@@ -313,6 +567,10 @@ handle_channel_error(int err, PyObject *mod, int64_t cid)
         PyErr_Format(state->ChannelClosedError,
                      "channel %" PRId64 " is closed", cid);
     }
+    else if (err == ERR_CHANNEL_CLOSED_WAITING) {
+        PyErr_Format(state->ChannelClosedError,
+                     "channel %" PRId64 " has closed", cid);
+    }
     else if (err == ERR_CHANNEL_INTERP_CLOSED) {
         PyErr_Format(state->ChannelClosedError,
                      "channel %" PRId64 " is already closed", cid);
@@ -345,38 +603,148 @@ handle_channel_error(int err, PyObject *mod, int64_t cid)
     return 1;
 }
 
+
 /* the channel queue */
 
+typedef uintptr_t _channelitem_id_t;
+
+typedef struct wait_info {
+    PyThread_type_lock mutex;
+    enum {
+        WAITING_NO_STATUS = 0,
+        WAITING_ACQUIRED = 1,
+        WAITING_RELEASING = 2,
+        WAITING_RELEASED = 3,
+    } status;
+    int received;
+    _channelitem_id_t itemid;
+} _waiting_t;
+
+static int
+_waiting_init(_waiting_t *waiting)
+{
+    PyThread_type_lock mutex = PyThread_allocate_lock();
+    if (mutex == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
+    *waiting = (_waiting_t){
+        .mutex = mutex,
+        .status = WAITING_NO_STATUS,
+    };
+    return 0;
+}
+
+static void
+_waiting_clear(_waiting_t *waiting)
+{
+    assert(waiting->status != WAITING_ACQUIRED
+           && waiting->status != WAITING_RELEASING);
+    if (waiting->mutex != NULL) {
+        PyThread_free_lock(waiting->mutex);
+        waiting->mutex = NULL;
+    }
+}
+
+static _channelitem_id_t
+_waiting_get_itemid(_waiting_t *waiting)
+{
+    return waiting->itemid;
+}
+
+static void
+_waiting_acquire(_waiting_t *waiting)
+{
+    assert(waiting->status == WAITING_NO_STATUS);
+    PyThread_acquire_lock(waiting->mutex, NOWAIT_LOCK);
+    waiting->status = WAITING_ACQUIRED;
+}
+
+static void
+_waiting_release(_waiting_t *waiting, int received)
+{
+    assert(waiting->mutex != NULL);
+    assert(waiting->status == WAITING_ACQUIRED);
+    assert(!waiting->received);
+
+    waiting->status = WAITING_RELEASING;
+    PyThread_release_lock(waiting->mutex);
+    if (waiting->received != received) {
+        assert(received == 1);
+        waiting->received = received;
+    }
+    waiting->status = WAITING_RELEASED;
+}
+
+static void
+_waiting_finish_releasing(_waiting_t *waiting)
+{
+    while (waiting->status == WAITING_RELEASING) {
+#ifdef MS_WINDOWS
+        SwitchToThread();
+#elif defined(HAVE_SCHED_H)
+        sched_yield();
+#endif
+    }
+}
+
 struct _channelitem;
 
 typedef struct _channelitem {
     _PyCrossInterpreterData *data;
+    _waiting_t *waiting;
     struct _channelitem *next;
 } _channelitem;
 
-static _channelitem *
-_channelitem_new(void)
+static inline _channelitem_id_t
+_channelitem_ID(_channelitem *item)
 {
-    _channelitem *item = GLOBAL_MALLOC(_channelitem);
-    if (item == NULL) {
-        PyErr_NoMemory();
-        return NULL;
+    return (_channelitem_id_t)item;
+}
+
+static void
+_channelitem_init(_channelitem *item,
+                  _PyCrossInterpreterData *data, _waiting_t *waiting)
+{
+    *item = (_channelitem){
+        .data = data,
+        .waiting = waiting,
+    };
+    if (waiting != NULL) {
+        waiting->itemid = _channelitem_ID(item);
     }
-    item->data = NULL;
-    item->next = NULL;
-    return item;
 }
 
 static void
 _channelitem_clear(_channelitem *item)
 {
+    item->next = NULL;
+
     if (item->data != NULL) {
-        (void)_release_xid_data(item->data, 1);
-        // It was allocated in _channel_send().
-        GLOBAL_FREE(item->data);
+        // It was allocated in channel_send().
+        (void)_release_xid_data(item->data, XID_IGNORE_EXC & XID_FREE);
         item->data = NULL;
     }
-    item->next = NULL;
+
+    if (item->waiting != NULL) {
+        if (item->waiting->status == WAITING_ACQUIRED) {
+            _waiting_release(item->waiting, 0);
+        }
+        item->waiting = NULL;
+    }
+}
+
+static _channelitem *
+_channelitem_new(_PyCrossInterpreterData *data, _waiting_t *waiting)
+{
+    _channelitem *item = GLOBAL_MALLOC(_channelitem);
+    if (item == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    _channelitem_init(item, data, waiting);
+    return item;
 }
 
 static void
@@ -396,13 +764,17 @@ _channelitem_free_all(_channelitem *item)
     }
 }
 
-static _PyCrossInterpreterData *
-_channelitem_popped(_channelitem *item)
+static void
+_channelitem_popped(_channelitem *item,
+                    _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
 {
-    _PyCrossInterpreterData *data = item->data;
+    assert(item->waiting == NULL || item->waiting->status == WAITING_ACQUIRED);
+    *p_data = item->data;
+    *p_waiting = item->waiting;
+    // We clear them here, so they won't be released in _channelitem_clear().
     item->data = NULL;
+    item->waiting = NULL;
     _channelitem_free(item);
-    return data;
 }
 
 typedef struct _channelqueue {
@@ -442,13 +814,13 @@ _channelqueue_free(_channelqueue *queue)
 }
 
 static int
-_channelqueue_put(_channelqueue *queue, _PyCrossInterpreterData *data)
+_channelqueue_put(_channelqueue *queue,
+                  _PyCrossInterpreterData *data, _waiting_t *waiting)
 {
-    _channelitem *item = _channelitem_new();
+    _channelitem *item = _channelitem_new(data, waiting);
     if (item == NULL) {
         return -1;
     }
-    item->data = data;
 
     queue->count += 1;
     if (queue->first == NULL) {
@@ -458,15 +830,21 @@ _channelqueue_put(_channelqueue *queue, _PyCrossInterpreterData *data)
         queue->last->next = item;
     }
     queue->last = item;
+
+    if (waiting != NULL) {
+        _waiting_acquire(waiting);
+    }
+
     return 0;
 }
 
-static _PyCrossInterpreterData *
-_channelqueue_get(_channelqueue *queue)
+static int
+_channelqueue_get(_channelqueue *queue,
+                  _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
 {
     _channelitem *item = queue->first;
     if (item == NULL) {
-        return NULL;
+        return ERR_CHANNEL_EMPTY;
     }
     queue->first = item->next;
     if (queue->last == item) {
@@ -474,18 +852,84 @@ _channelqueue_get(_channelqueue *queue)
     }
     queue->count -= 1;
 
-    return _channelitem_popped(item);
+    _channelitem_popped(item, p_data, p_waiting);
+    return 0;
+}
+
+static int
+_channelqueue_find(_channelqueue *queue, _channelitem_id_t itemid,
+                   _channelitem **p_item, _channelitem **p_prev)
+{
+    _channelitem *prev = NULL;
+    _channelitem *item = NULL;
+    if (queue->first != NULL) {
+        if (_channelitem_ID(queue->first) == itemid) {
+            item = queue->first;
+        }
+        else {
+            prev = queue->first;
+            while (prev->next != NULL) {
+                if (_channelitem_ID(prev->next) == itemid) {
+                    item = prev->next;
+                    break;
+                }
+                prev = prev->next;
+            }
+            if (item == NULL) {
+                prev = NULL;
+            }
+        }
+    }
+    if (p_item != NULL) {
+        *p_item = item;
+    }
+    if (p_prev != NULL) {
+        *p_prev = prev;
+    }
+    return (item != NULL);
 }
 
 static void
-_channelqueue_drop_interpreter(_channelqueue *queue, int64_t interp)
+_channelqueue_remove(_channelqueue *queue, _channelitem_id_t itemid,
+                     _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
+{
+    _channelitem *prev = NULL;
+    _channelitem *item = NULL;
+    int found = _channelqueue_find(queue, itemid, &item, &prev);
+    if (!found) {
+        return;
+    }
+
+    assert(item->waiting != NULL);
+    assert(!item->waiting->received);
+    if (prev == NULL) {
+        assert(queue->first == item);
+        queue->first = item->next;
+    }
+    else {
+        assert(queue->first != item);
+        assert(prev->next == item);
+        prev->next = item->next;
+    }
+    item->next = NULL;
+
+    if (queue->last == item) {
+        queue->last = prev;
+    }
+    queue->count -= 1;
+
+    _channelitem_popped(item, p_data, p_waiting);
+}
+
+static void
+_channelqueue_clear_interpreter(_channelqueue *queue, int64_t interpid)
 {
     _channelitem *prev = NULL;
     _channelitem *next = queue->first;
     while (next != NULL) {
         _channelitem *item = next;
         next = item->next;
-        if (item->data->interp == interp) {
+        if (item->data->interpid == interpid) {
             if (prev == NULL) {
                 queue->first = item->next;
             }
@@ -501,18 +945,19 @@ _channelqueue_drop_interpreter(_channelqueue *queue, int64_t interp)
     }
 }
 
+
 /* channel-interpreter associations */
 
 struct _channelend;
 
 typedef struct _channelend {
     struct _channelend *next;
-    int64_t interp;
+    int64_t interpid;
     int open;
 } _channelend;
 
 static _channelend *
-_channelend_new(int64_t interp)
+_channelend_new(int64_t interpid)
 {
     _channelend *end = GLOBAL_MALLOC(_channelend);
     if (end == NULL) {
@@ -520,7 +965,7 @@ _channelend_new(int64_t interp)
         return NULL;
     }
     end->next = NULL;
-    end->interp = interp;
+    end->interpid = interpid;
     end->open = 1;
     return end;
 }
@@ -542,12 +987,12 @@ _channelend_free_all(_channelend *end)
 }
 
 static _channelend *
-_channelend_find(_channelend *first, int64_t interp, _channelend **pprev)
+_channelend_find(_channelend *first, int64_t interpid, _channelend **pprev)
 {
     _channelend *prev = NULL;
     _channelend *end = first;
     while (end != NULL) {
-        if (end->interp == interp) {
+        if (end->interpid == interpid) {
             break;
         }
         prev = end;
@@ -604,10 +1049,10 @@ _channelends_free(_channelends *ends)
 }
 
 static _channelend *
-_channelends_add(_channelends *ends, _channelend *prev, int64_t interp,
+_channelends_add(_channelends *ends, _channelend *prev, int64_t interpid,
                  int send)
 {
-    _channelend *end = _channelend_new(interp);
+    _channelend *end = _channelend_new(interpid);
     if (end == NULL) {
         return NULL;
     }
@@ -633,11 +1078,11 @@ _channelends_add(_channelends *ends, _channelend *prev, int64_t interp,
 }
 
 static int
-_channelends_associate(_channelends *ends, int64_t interp, int send)
+_channelends_associate(_channelends *ends, int64_t interpid, int send)
 {
     _channelend *prev;
     _channelend *end = _channelend_find(send ? ends->send : ends->recv,
-                                        interp, &prev);
+                                        interpid, &prev);
     if (end != NULL) {
         if (!end->open) {
             return ERR_CHANNEL_CLOSED;
@@ -645,7 +1090,7 @@ _channelends_associate(_channelends *ends, int64_t interp, int send)
         // already associated
         return 0;
     }
-    if (_channelends_add(ends, prev, interp, send) == NULL) {
+    if (_channelends_add(ends, prev, interpid, send) == NULL) {
         return -1;
     }
     return 0;
@@ -655,16 +1100,20 @@ static int
 _channelends_is_open(_channelends *ends)
 {
     if (ends->numsendopen != 0 || ends->numrecvopen != 0) {
+        // At least one interpreter is still associated with the channel
+        // (and hasn't been released).
         return 1;
     }
+    // XXX This is wrong if an end can ever be removed.
     if (ends->send == NULL && ends->recv == NULL) {
+        // The channel has never had any interpreters associated with it.
         return 1;
     }
     return 0;
 }
 
 static void
-_channelends_close_end(_channelends *ends, _channelend *end, int send)
+_channelends_release_end(_channelends *ends, _channelend *end, int send)
 {
     end->open = 0;
     if (send) {
@@ -676,51 +1125,37 @@ _channelends_close_end(_channelends *ends, _channelend *end, int send)
 }
 
 static int
-_channelends_close_interpreter(_channelends *ends, int64_t interp, int which)
+_channelends_release_interpreter(_channelends *ends, int64_t interpid, int which)
 {
     _channelend *prev;
     _channelend *end;
     if (which >= 0) {  // send/both
-        end = _channelend_find(ends->send, interp, &prev);
+        end = _channelend_find(ends->send, interpid, &prev);
         if (end == NULL) {
             // never associated so add it
-            end = _channelends_add(ends, prev, interp, 1);
+            end = _channelends_add(ends, prev, interpid, 1);
             if (end == NULL) {
                 return -1;
             }
         }
-        _channelends_close_end(ends, end, 1);
+        _channelends_release_end(ends, end, 1);
     }
     if (which <= 0) {  // recv/both
-        end = _channelend_find(ends->recv, interp, &prev);
+        end = _channelend_find(ends->recv, interpid, &prev);
         if (end == NULL) {
             // never associated so add it
-            end = _channelends_add(ends, prev, interp, 0);
+            end = _channelends_add(ends, prev, interpid, 0);
             if (end == NULL) {
                 return -1;
             }
         }
-        _channelends_close_end(ends, end, 0);
+        _channelends_release_end(ends, end, 0);
     }
     return 0;
 }
 
 static void
-_channelends_drop_interpreter(_channelends *ends, int64_t interp)
-{
-    _channelend *end;
-    end = _channelend_find(ends->send, interp, NULL);
-    if (end != NULL) {
-        _channelends_close_end(ends, end, 1);
-    }
-    end = _channelend_find(ends->recv, interp, NULL);
-    if (end != NULL) {
-        _channelends_close_end(ends, end, 0);
-    }
-}
-
-static void
-_channelends_close_all(_channelends *ends, int which, int force)
+_channelends_release_all(_channelends *ends, int which, int force)
 {
     // XXX Handle the ends.
     // XXX Handle force is True.
@@ -728,16 +1163,32 @@ _channelends_close_all(_channelends *ends, int which, int force)
     // Ensure all the "send"-associated interpreters are closed.
     _channelend *end;
     for (end = ends->send; end != NULL; end = end->next) {
-        _channelends_close_end(ends, end, 1);
+        _channelends_release_end(ends, end, 1);
     }
 
     // Ensure all the "recv"-associated interpreters are closed.
     for (end = ends->recv; end != NULL; end = end->next) {
-        _channelends_close_end(ends, end, 0);
+        _channelends_release_end(ends, end, 0);
+    }
+}
+
+static void
+_channelends_clear_interpreter(_channelends *ends, int64_t interpid)
+{
+    // XXX Actually remove the entries?
+    _channelend *end;
+    end = _channelend_find(ends->send, interpid, NULL);
+    if (end != NULL) {
+        _channelends_release_end(ends, end, 1);
+    }
+    end = _channelend_find(ends->recv, interpid, NULL);
+    if (end != NULL) {
+        _channelends_release_end(ends, end, 0);
     }
 }
 
-/* channels */
+
+/* each channel's state */
 
 struct _channel;
 struct _channel_closing;
@@ -750,12 +1201,12 @@ typedef struct _channel {
     _channelends *ends;
     int open;
     struct _channel_closing *closing;
-} _PyChannelState;
+} _channel_state;
 
-static _PyChannelState *
+static _channel_state *
 _channel_new(PyThread_type_lock mutex)
 {
-    _PyChannelState *chan = GLOBAL_MALLOC(_PyChannelState);
+    _channel_state *chan = GLOBAL_MALLOC(_channel_state);
     if (chan == NULL) {
         return NULL;
     }
@@ -777,7 +1228,7 @@ _channel_new(PyThread_type_lock mutex)
 }
 
 static void
-_channel_free(_PyChannelState *chan)
+_channel_free(_channel_state *chan)
 {
     _channel_clear_closing(chan);
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
@@ -790,8 +1241,8 @@ _channel_free(_PyChannelState *chan)
 }
 
 static int
-_channel_add(_PyChannelState *chan, int64_t interp,
-             _PyCrossInterpreterData *data)
+_channel_add(_channel_state *chan, int64_t interpid,
+             _PyCrossInterpreterData *data, _waiting_t *waiting)
 {
     int res = -1;
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
@@ -800,14 +1251,15 @@ _channel_add(_PyChannelState *chan, int64_t interp,
         res = ERR_CHANNEL_CLOSED;
         goto done;
     }
-    if (_channelends_associate(chan->ends, interp, 1) != 0) {
+    if (_channelends_associate(chan->ends, interpid, 1) != 0) {
         res = ERR_CHANNEL_INTERP_CLOSED;
         goto done;
     }
 
-    if (_channelqueue_put(chan->queue, data) != 0) {
+    if (_channelqueue_put(chan->queue, data, waiting) != 0) {
         goto done;
     }
+    // Any errors past this point must cause a _waiting_release() call.
 
     res = 0;
 done:
@@ -816,8 +1268,8 @@ _channel_add(_PyChannelState *chan, int64_t interp,
 }
 
 static int
-_channel_next(_PyChannelState *chan, int64_t interp,
-              _PyCrossInterpreterData **res)
+_channel_next(_channel_state *chan, int64_t interpid,
+              _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
 {
     int err = 0;
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
@@ -826,16 +1278,17 @@ _channel_next(_PyChannelState *chan, int64_t interp,
         err = ERR_CHANNEL_CLOSED;
         goto done;
     }
-    if (_channelends_associate(chan->ends, interp, 0) != 0) {
+    if (_channelends_associate(chan->ends, interpid, 0) != 0) {
         err = ERR_CHANNEL_INTERP_CLOSED;
         goto done;
     }
 
-    _PyCrossInterpreterData *data = _channelqueue_get(chan->queue);
-    if (data == NULL && !PyErr_Occurred() && chan->closing != NULL) {
+    int empty = _channelqueue_get(chan->queue, p_data, p_waiting);
+    assert(empty == 0 || empty == ERR_CHANNEL_EMPTY);
+    assert(!PyErr_Occurred());
+    if (empty && chan->closing != NULL) {
         chan->open = 0;
     }
-    *res = data;
 
 done:
     PyThread_release_lock(chan->mutex);
@@ -845,8 +1298,28 @@ _channel_next(_PyChannelState *chan, int64_t interp,
     return err;
 }
 
+static void
+_channel_remove(_channel_state *chan, _channelitem_id_t itemid)
+{
+    _PyCrossInterpreterData *data = NULL;
+    _waiting_t *waiting = NULL;
+
+    PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
+    _channelqueue_remove(chan->queue, itemid, &data, &waiting);
+    PyThread_release_lock(chan->mutex);
+
+    (void)_release_xid_data(data, XID_IGNORE_EXC | XID_FREE);
+    if (waiting != NULL) {
+        _waiting_release(waiting, 0);
+    }
+
+    if (chan->queue->count == 0) {
+        _channel_finish_closing(chan);
+    }
+}
+
 static int
-_channel_close_interpreter(_PyChannelState *chan, int64_t interp, int end)
+_channel_release_interpreter(_channel_state *chan, int64_t interpid, int end)
 {
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
 
@@ -856,10 +1329,12 @@ _channel_close_interpreter(_PyChannelState *chan, int64_t interp, int end)
         goto done;
     }
 
-    if (_channelends_close_interpreter(chan->ends, interp, end) != 0) {
+    if (_channelends_release_interpreter(chan->ends, interpid, end) != 0) {
         goto done;
     }
     chan->open = _channelends_is_open(chan->ends);
+    // XXX Clear the queue if not empty?
+    // XXX Activate the "closing" mechanism?
 
     res = 0;
 done:
@@ -867,20 +1342,8 @@ _channel_close_interpreter(_PyChannelState *chan, int64_t interp, int end)
     return res;
 }
 
-static void
-_channel_drop_interpreter(_PyChannelState *chan, int64_t interp)
-{
-    PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
-
-    _channelqueue_drop_interpreter(chan->queue, interp);
-    _channelends_drop_interpreter(chan->ends, interp);
-    chan->open = _channelends_is_open(chan->ends);
-
-    PyThread_release_lock(chan->mutex);
-}
-
 static int
-_channel_close_all(_PyChannelState *chan, int end, int force)
+_channel_release_all(_channel_state *chan, int end, int force)
 {
     int res = -1;
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
@@ -894,12 +1357,13 @@ _channel_close_all(_PyChannelState *chan, int end, int force)
         res = ERR_CHANNEL_NOT_EMPTY;
         goto done;
     }
+    // XXX Clear the queue?
 
     chan->open = 0;
 
     // We *could* also just leave these in place, since we've marked
     // the channel as closed already.
-    _channelends_close_all(chan->ends, end, force);
+    _channelends_release_all(chan->ends, end, force);
 
     res = 0;
 done:
@@ -907,25 +1371,39 @@ _channel_close_all(_PyChannelState *chan, int end, int force)
     return res;
 }
 
+static void
+_channel_clear_interpreter(_channel_state *chan, int64_t interpid)
+{
+    PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
+
+    _channelqueue_clear_interpreter(chan->queue, interpid);
+    _channelends_clear_interpreter(chan->ends, interpid);
+    chan->open = _channelends_is_open(chan->ends);
+
+    PyThread_release_lock(chan->mutex);
+}
+
+
 /* the set of channels */
 
 struct _channelref;
 
 typedef struct _channelref {
-    int64_t id;
-    _PyChannelState *chan;
+    int64_t cid;
+    _channel_state *chan;
     struct _channelref *next;
+    // The number of ChannelID objects referring to this channel.
     Py_ssize_t objcount;
 } _channelref;
 
 static _channelref *
-_channelref_new(int64_t id, _PyChannelState *chan)
+_channelref_new(int64_t cid, _channel_state *chan)
 {
     _channelref *ref = GLOBAL_MALLOC(_channelref);
     if (ref == NULL) {
         return NULL;
     }
-    ref->id = id;
+    ref->cid = cid;
     ref->chan = chan;
     ref->next = NULL;
     ref->objcount = 0;
@@ -935,7 +1413,7 @@ _channelref_new(int64_t id, _PyChannelState *chan)
 //static void
 //_channelref_clear(_channelref *ref)
 //{
-//    ref->id = -1;
+//    ref->cid = -1;
 //    ref->chan = NULL;
 //    ref->next = NULL;
 //    ref->objcount = 0;
@@ -952,12 +1430,12 @@ _channelref_free(_channelref *ref)
 }
 
 static _channelref *
-_channelref_find(_channelref *first, int64_t id, _channelref **pprev)
+_channelref_find(_channelref *first, int64_t cid, _channelref **pprev)
 {
     _channelref *prev = NULL;
     _channelref *ref = first;
     while (ref != NULL) {
-        if (ref->id == id) {
+        if (ref->cid == cid) {
             break;
         }
         prev = ref;
@@ -969,6 +1447,7 @@ _channelref_find(_channelref *first, int64_t id, _channelref **pprev)
     return ref;
 }
 
+
 typedef struct _channels {
     PyThread_type_lock mutex;
     _channelref *head;
@@ -999,27 +1478,27 @@ _channels_fini(_channels *channels)
 static int64_t
 _channels_next_id(_channels *channels)  // needs lock
 {
-    int64_t id = channels->next_id;
-    if (id < 0) {
+    int64_t cid = channels->next_id;
+    if (cid < 0) {
         /* overflow */
         return -1;
     }
     channels->next_id += 1;
-    return id;
+    return cid;
 }
 
 static int
-_channels_lookup(_channels *channels, int64_t id, PyThread_type_lock *pmutex,
-                 _PyChannelState **res)
+_channels_lookup(_channels *channels, int64_t cid, PyThread_type_lock *pmutex,
+                 _channel_state **res)
 {
     int err = -1;
-    _PyChannelState *chan = NULL;
+    _channel_state *chan = NULL;
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
     if (pmutex != NULL) {
         *pmutex = NULL;
     }
 
-    _channelref *ref = _channelref_find(channels->head, id, NULL);
+    _channelref *ref = _channelref_find(channels->head, cid, NULL);
     if (ref == NULL) {
         err = ERR_CHANNEL_NOT_FOUND;
         goto done;
@@ -1046,18 +1525,18 @@ _channels_lookup(_channels *channels, int64_t id, PyThread_type_lock *pmutex,
 }
 
 static int64_t
-_channels_add(_channels *channels, _PyChannelState *chan)
+_channels_add(_channels *channels, _channel_state *chan)
 {
     int64_t cid = -1;
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
 
     // Create a new ref.
-    int64_t id = _channels_next_id(channels);
-    if (id < 0) {
+    int64_t _cid = _channels_next_id(channels);
+    if (_cid < 0) {
         cid = ERR_NO_NEXT_CHANNEL_ID;
         goto done;
     }
-    _channelref *ref = _channelref_new(id, chan);
+    _channelref *ref = _channelref_new(_cid, chan);
     if (ref == NULL) {
         goto done;
     }
@@ -1068,17 +1547,17 @@ _channels_add(_channels *channels, _PyChannelState *chan)
     channels->head = ref;
     channels->numopen += 1;
 
-    cid = id;
+    cid = _cid;
 done:
     PyThread_release_lock(channels->mutex);
     return cid;
 }
 
 /* forward */
-static int _channel_set_closing(struct _channelref *, PyThread_type_lock);
+static int _channel_set_closing(_channelref *, PyThread_type_lock);
 
 static int
-_channels_close(_channels *channels, int64_t cid, _PyChannelState **pchan,
+_channels_close(_channels *channels, int64_t cid, _channel_state **pchan,
                 int end, int force)
 {
     int res = -1;
@@ -1102,7 +1581,7 @@ _channels_close(_channels *channels, int64_t cid, _PyChannelState **pchan,
         goto done;
     }
     else {
-        int err = _channel_close_all(ref->chan, end, force);
+        int err = _channel_release_all(ref->chan, end, force);
         if (err != 0) {
             if (end == CHANNEL_SEND && err == ERR_CHANNEL_NOT_EMPTY) {
                 if (ref->chan->closing != NULL) {
@@ -1144,7 +1623,7 @@ _channels_close(_channels *channels, int64_t cid, _PyChannelState **pchan,
 
 static void
 _channels_remove_ref(_channels *channels, _channelref *ref, _channelref *prev,
-                     _PyChannelState **pchan)
+                     _channel_state **pchan)
 {
     if (ref == channels->head) {
         channels->head = ref->next;
@@ -1161,7 +1640,7 @@ _channels_remove_ref(_channels *channels, _channelref *ref, _channelref *prev,
 }
 
 static int
-_channels_remove(_channels *channels, int64_t id, _PyChannelState **pchan)
+_channels_remove(_channels *channels, int64_t cid, _channel_state **pchan)
 {
     int res = -1;
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
@@ -1171,7 +1650,7 @@ _channels_remove(_channels *channels, int64_t id, _PyChannelState **pchan)
     }
 
     _channelref *prev = NULL;
-    _channelref *ref = _channelref_find(channels->head, id, &prev);
+    _channelref *ref = _channelref_find(channels->head, cid, &prev);
     if (ref == NULL) {
         res = ERR_CHANNEL_NOT_FOUND;
         goto done;
@@ -1186,12 +1665,12 @@ _channels_remove(_channels *channels, int64_t id, _PyChannelState **pchan)
 }
 
 static int
-_channels_add_id_object(_channels *channels, int64_t id)
+_channels_add_id_object(_channels *channels, int64_t cid)
 {
     int res = -1;
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
 
-    _channelref *ref = _channelref_find(channels->head, id, NULL);
+    _channelref *ref = _channelref_find(channels->head, cid, NULL);
     if (ref == NULL) {
         res = ERR_CHANNEL_NOT_FOUND;
         goto done;
@@ -1205,12 +1684,12 @@ _channels_add_id_object(_channels *channels, int64_t id)
 }
 
 static void
-_channels_drop_id_object(_channels *channels, int64_t id)
+_channels_release_cid_object(_channels *channels, int64_t cid)
 {
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
 
     _channelref *prev = NULL;
-    _channelref *ref = _channelref_find(channels->head, id, &prev);
+    _channelref *ref = _channelref_find(channels->head, cid, &prev);
     if (ref == NULL) {
         // Already destroyed.
         goto done;
@@ -1219,7 +1698,7 @@ _channels_drop_id_object(_channels *channels, int64_t id)
 
     // Destroy if no longer used.
     if (ref->objcount == 0) {
-        _PyChannelState *chan = NULL;
+        _channel_state *chan = NULL;
         _channels_remove_ref(channels, ref, prev, &chan);
         if (chan != NULL) {
             _channel_free(chan);
@@ -1241,7 +1720,7 @@ _channels_list_all(_channels *channels, int64_t *count)
     }
     _channelref *ref = channels->head;
     for (int64_t i=0; ref != NULL; ref = ref->next, i++) {
-        ids[i] = ref->id;
+        ids[i] = ref->cid;
     }
     *count = channels->numopen;
 
@@ -1252,29 +1731,30 @@ _channels_list_all(_channels *channels, int64_t *count)
 }
 
 static void
-_channels_drop_interpreter(_channels *channels, int64_t interp)
+_channels_clear_interpreter(_channels *channels, int64_t interpid)
 {
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
 
     _channelref *ref = channels->head;
     for (; ref != NULL; ref = ref->next) {
         if (ref->chan != NULL) {
-            _channel_drop_interpreter(ref->chan, interp);
+            _channel_clear_interpreter(ref->chan, interpid);
         }
     }
 
     PyThread_release_lock(channels->mutex);
 }
 
+
 /* support for closing non-empty channels */
 
 struct _channel_closing {
-    struct _channelref *ref;
+    _channelref *ref;
 };
 
 static int
-_channel_set_closing(struct _channelref *ref, PyThread_type_lock mutex) {
-    struct _channel *chan = ref->chan;
+_channel_set_closing(_channelref *ref, PyThread_type_lock mutex) {
+    _channel_state *chan = ref->chan;
     if (chan == NULL) {
         // already closed
         return 0;
@@ -1298,7 +1778,7 @@ _channel_set_closing(struct _channelref *ref, PyThread_type_lock mutex) {
 }
 
 static void
-_channel_clear_closing(struct _channel *chan) {
+_channel_clear_closing(_channel_state *chan) {
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
     if (chan->closing != NULL) {
         GLOBAL_FREE(chan->closing);
@@ -1308,7 +1788,7 @@ _channel_clear_closing(struct _channel *chan) {
 }
 
 static void
-_channel_finish_closing(struct _channel *chan) {
+_channel_finish_closing(_channel_state *chan) {
     struct _channel_closing *closing = chan->closing;
     if (closing == NULL) {
         return;
@@ -1320,32 +1800,35 @@ _channel_finish_closing(struct _channel *chan) {
     _channel_free(chan);
 }
 
+
 /* "high"-level channel-related functions */
 
+// Create a new channel.
 static int64_t
-_channel_create(_channels *channels)
+channel_create(_channels *channels)
 {
     PyThread_type_lock mutex = PyThread_allocate_lock();
     if (mutex == NULL) {
         return ERR_CHANNEL_MUTEX_INIT;
     }
-    _PyChannelState *chan = _channel_new(mutex);
+    _channel_state *chan = _channel_new(mutex);
     if (chan == NULL) {
         PyThread_free_lock(mutex);
         return -1;
     }
-    int64_t id = _channels_add(channels, chan);
-    if (id < 0) {
+    int64_t cid = _channels_add(channels, chan);
+    if (cid < 0) {
         _channel_free(chan);
     }
-    return id;
+    return cid;
 }
 
+// Completely destroy the channel.
 static int
-_channel_destroy(_channels *channels, int64_t id)
+channel_destroy(_channels *channels, int64_t cid)
 {
-    _PyChannelState *chan = NULL;
-    int err = _channels_remove(channels, id, &chan);
+    _channel_state *chan = NULL;
+    int err = _channels_remove(channels, cid, &chan);
     if (err != 0) {
         return err;
     }
@@ -1355,18 +1838,23 @@ _channel_destroy(_channels *channels, int64_t id)
     return 0;
 }
 
+// Push an object onto the channel.
+// The current interpreter gets associated with the send end of the channel.
+// Optionally request to be notified when it is received.
 static int
-_channel_send(_channels *channels, int64_t id, PyObject *obj)
+channel_send(_channels *channels, int64_t cid, PyObject *obj,
+             _waiting_t *waiting)
 {
     PyInterpreterState *interp = _get_current_interp();
     if (interp == NULL) {
         return -1;
     }
+    int64_t interpid = PyInterpreterState_GetID(interp);
 
     // Look up the channel.
     PyThread_type_lock mutex = NULL;
-    _PyChannelState *chan = NULL;
-    int err = _channels_lookup(channels, id, &mutex, &chan);
+    _channel_state *chan = NULL;
+    int err = _channels_lookup(channels, cid, &mutex, &chan);
     if (err != 0) {
         return err;
     }
@@ -1391,7 +1879,7 @@ _channel_send(_channels *channels, int64_t id, PyObject *obj)
     }
 
     // Add the data to the channel.
-    int res = _channel_add(chan, PyInterpreterState_GetID(interp), data);
+    int res = _channel_add(chan, interpid, data, waiting);
     PyThread_release_lock(mutex);
     if (res != 0) {
         // We may chain an exception here:
@@ -1403,8 +1891,85 @@ _channel_send(_channels *channels, int64_t id, PyObject *obj)
     return 0;
 }
 
+// Basically, un-send an object.
+static void
+channel_clear_sent(_channels *channels, int64_t cid, _waiting_t *waiting)
+{
+    // Look up the channel.
+    PyThread_type_lock mutex = NULL;
+    _channel_state *chan = NULL;
+    int err = _channels_lookup(channels, cid, &mutex, &chan);
+    if (err != 0) {
+        // The channel was already closed, etc.
+        assert(waiting->status == WAITING_RELEASED);
+        return;  // Ignore the error.
+    }
+    assert(chan != NULL);
+    // Past this point we are responsible for releasing the mutex.
+
+    _channelitem_id_t itemid = _waiting_get_itemid(waiting);
+    _channel_remove(chan, itemid);
+
+    PyThread_release_lock(mutex);
+}
+
+// Like channel_send(), but strictly wait for the object to be received.
 static int
-_channel_recv(_channels *channels, int64_t id, PyObject **res)
+channel_send_wait(_channels *channels, int64_t cid, PyObject *obj,
+                   PY_TIMEOUT_T timeout)
+{
+    // We use a stack variable here, so we must ensure that &waiting
+    // is not held by any channel item at the point this function exits.
+    _waiting_t waiting;
+    if (_waiting_init(&waiting) < 0) {
+        assert(PyErr_Occurred());
+        return -1;
+    }
+
+    /* Queue up the object. */
+    int res = channel_send(channels, cid, obj, &waiting);
+    if (res < 0) {
+        assert(waiting.status == WAITING_NO_STATUS);
+        goto finally;
+    }
+
+    /* Wait until the object is received. */
+    if (wait_for_lock(waiting.mutex, timeout) < 0) {
+        assert(PyErr_Occurred());
+        _waiting_finish_releasing(&waiting);
+        /* The send() call is failing now, so make sure the item
+           won't be received. */
+        channel_clear_sent(channels, cid, &waiting);
+        assert(waiting.status == WAITING_RELEASED);
+        if (!waiting.received) {
+            res = -1;
+            goto finally;
+        }
+        // XXX Emit a warning if not a TimeoutError?
+        PyErr_Clear();
+    }
+    else {
+        _waiting_finish_releasing(&waiting);
+        assert(waiting.status == WAITING_RELEASED);
+        if (!waiting.received) {
+            res = ERR_CHANNEL_CLOSED_WAITING;
+            goto finally;
+        }
+    }
+
+    /* success! */
+    res = 0;
+
+finally:
+    _waiting_clear(&waiting);
+    return res;
+}
+
+// Pop the next object off the channel.  Fail if empty.
+// The current interpreter gets associated with the recv end of the channel.
+// XXX Support a "wait" mutex?
+static int
+channel_recv(_channels *channels, int64_t cid, PyObject **res)
 {
     int err;
     *res = NULL;
@@ -1417,11 +1982,12 @@ _channel_recv(_channels *channels, int64_t id, PyObject **res)
         }
         return 0;
     }
+    int64_t interpid = PyInterpreterState_GetID(interp);
 
     // Look up the channel.
     PyThread_type_lock mutex = NULL;
-    _PyChannelState *chan = NULL;
-    err = _channels_lookup(channels, id, &mutex, &chan);
+    _channel_state *chan = NULL;
+    err = _channels_lookup(channels, cid, &mutex, &chan);
     if (err != 0) {
         return err;
     }
@@ -1430,7 +1996,8 @@ _channel_recv(_channels *channels, int64_t id, PyObject **res)
 
     // Pop off the next item from the channel.
     _PyCrossInterpreterData *data = NULL;
-    err = _channel_next(chan, PyInterpreterState_GetID(interp), &data);
+    _waiting_t *waiting = NULL;
+    err = _channel_next(chan, interpid, &data, &waiting);
     PyThread_release_lock(mutex);
     if (err != 0) {
         return err;
@@ -1444,78 +2011,327 @@ _channel_recv(_channels *channels, int64_t id, PyObject **res)
     PyObject *obj = _PyCrossInterpreterData_NewObject(data);
     if (obj == NULL) {
         assert(PyErr_Occurred());
-        (void)_release_xid_data(data, 1);
-        // It was allocated in _channel_send().
-        GLOBAL_FREE(data);
+        // It was allocated in channel_send(), so we free it.
+        (void)_release_xid_data(data, XID_IGNORE_EXC | XID_FREE);
+        if (waiting != NULL) {
+            _waiting_release(waiting, 0);
+        }
+        return -1;
+    }
+    // It was allocated in channel_send(), so we free it.
+    int release_res = _release_xid_data(data, XID_FREE);
+    if (release_res < 0) {
+        // The source interpreter has been destroyed already.
+        assert(PyErr_Occurred());
+        Py_DECREF(obj);
+        if (waiting != NULL) {
+            _waiting_release(waiting, 0);
+        }
+        return -1;
+    }
+
+    // Notify the sender.
+    if (waiting != NULL) {
+        _waiting_release(waiting, 1);
+    }
+
+    *res = obj;
+    return 0;
+}
+
+// Disallow send/recv for the current interpreter.
+// The channel is marked as closed if no other interpreters
+// are currently associated.
+static int
+channel_release(_channels *channels, int64_t cid, int send, int recv)
+{
+    PyInterpreterState *interp = _get_current_interp();
+    if (interp == NULL) {
+        return -1;
+    }
+    int64_t interpid = PyInterpreterState_GetID(interp);
+
+    // Look up the channel.
+    PyThread_type_lock mutex = NULL;
+    _channel_state *chan = NULL;
+    int err = _channels_lookup(channels, cid, &mutex, &chan);
+    if (err != 0) {
+        return err;
+    }
+    // Past this point we are responsible for releasing the mutex.
+
+    // Close one or both of the two ends.
+    int res = _channel_release_interpreter(chan, interpid, send-recv);
+    PyThread_release_lock(mutex);
+    return res;
+}
+
+// Close the channel (for all interpreters).  Fail if it's already closed.
+// Close immediately if it's empty.  Otherwise, disallow sending and
+// finally close once empty.  Optionally, immediately clear and close it.
+static int
+channel_close(_channels *channels, int64_t cid, int end, int force)
+{
+    return _channels_close(channels, cid, NULL, end, force);
+}
+
+// Return true if the identified interpreter is associated
+// with the given end of the channel.
+static int
+channel_is_associated(_channels *channels, int64_t cid, int64_t interpid,
+                       int send)
+{
+    _channel_state *chan = NULL;
+    int err = _channels_lookup(channels, cid, NULL, &chan);
+    if (err != 0) {
+        return err;
+    }
+    else if (send && chan->closing != NULL) {
+        return ERR_CHANNEL_CLOSED;
+    }
+
+    _channelend *end = _channelend_find(send ? chan->ends->send : chan->ends->recv,
+                                        interpid, NULL);
+
+    return (end != NULL && end->open);
+}
+
+
+/* channel info */
+
+struct channel_info {
+    struct {
+        // 1: closed; -1: closing
+        int closed;
+        struct {
+            Py_ssize_t nsend_only;  // not released
+            Py_ssize_t nsend_only_released;
+            Py_ssize_t nrecv_only;  // not released
+            Py_ssize_t nrecv_only_released;
+            Py_ssize_t nboth;  // not released
+            Py_ssize_t nboth_released;
+            Py_ssize_t nboth_send_released;
+            Py_ssize_t nboth_recv_released;
+        } all;
+        struct {
+            // 1: associated; -1: released
+            int send;
+            int recv;
+        } cur;
+    } status;
+    Py_ssize_t count;
+};
+
+static int
+_channel_get_info(_channels *channels, int64_t cid, struct channel_info *info)
+{
+    int err = 0;
+    *info = (struct channel_info){0};
+
+    // Get the current interpreter.
+    PyInterpreterState *interp = _get_current_interp();
+    if (interp == NULL) {
         return -1;
     }
-    int release_res = _release_xid_data(data, 0);
-    // It was allocated in _channel_send().
-    GLOBAL_FREE(data);
-    if (release_res < 0) {
-        // The source interpreter has been destroyed already.
-        assert(PyErr_Occurred());
-        Py_DECREF(obj);
-        return -1;
+    Py_ssize_t interpid = PyInterpreterState_GetID(interp);
+
+    // Hold the global lock until we're done.
+    PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
+
+    // Find the channel.
+    _channelref *ref = _channelref_find(channels->head, cid, NULL);
+    if (ref == NULL) {
+        err = ERR_CHANNEL_NOT_FOUND;
+        goto finally;
+    }
+    _channel_state *chan = ref->chan;
+
+    // Check if open.
+    if (chan == NULL) {
+        info->status.closed = 1;
+        goto finally;
+    }
+    if (!chan->open) {
+        assert(chan->queue->count == 0);
+        info->status.closed = 1;
+        goto finally;
+    }
+    if (chan->closing != NULL) {
+        assert(chan->queue->count > 0);
+        info->status.closed = -1;
+    }
+    else {
+        info->status.closed = 0;
     }
 
-    *res = obj;
-    return 0;
-}
+    // Get the number of queued objects.
+    info->count = chan->queue->count;
 
-static int
-_channel_drop(_channels *channels, int64_t id, int send, int recv)
-{
-    PyInterpreterState *interp = _get_current_interp();
-    if (interp == NULL) {
-        return -1;
+    // Get the ends statuses.
+    assert(info->status.cur.send == 0);
+    assert(info->status.cur.recv == 0);
+    _channelend *send = chan->ends->send;
+    while (send != NULL) {
+        if (send->interpid == interpid) {
+            info->status.cur.send = send->open ? 1 : -1;
+        }
+
+        if (send->open) {
+            info->status.all.nsend_only += 1;
+        }
+        else {
+            info->status.all.nsend_only_released += 1;
+        }
+        send = send->next;
     }
+    _channelend *recv = chan->ends->recv;
+    while (recv != NULL) {
+        if (recv->interpid == interpid) {
+            info->status.cur.recv = recv->open ? 1 : -1;
+        }
 
-    // Look up the channel.
-    PyThread_type_lock mutex = NULL;
-    _PyChannelState *chan = NULL;
-    int err = _channels_lookup(channels, id, &mutex, &chan);
-    if (err != 0) {
-        return err;
+        // XXX This is O(n*n).  Why do we have 2 linked lists?
+        _channelend *send = chan->ends->send;
+        while (send != NULL) {
+            if (send->interpid == recv->interpid) {
+                break;
+            }
+            send = send->next;
+        }
+        if (send == NULL) {
+            if (recv->open) {
+                info->status.all.nrecv_only += 1;
+            }
+            else {
+                info->status.all.nrecv_only_released += 1;
+            }
+        }
+        else {
+            if (recv->open) {
+                if (send->open) {
+                    info->status.all.nboth += 1;
+                    info->status.all.nsend_only -= 1;
+                }
+                else {
+                    info->status.all.nboth_recv_released += 1;
+                    info->status.all.nsend_only_released -= 1;
+                }
+            }
+            else {
+                if (send->open) {
+                    info->status.all.nboth_send_released += 1;
+                    info->status.all.nsend_only -= 1;
+                }
+                else {
+                    info->status.all.nboth_released += 1;
+                    info->status.all.nsend_only_released -= 1;
+                }
+            }
+        }
+        recv = recv->next;
     }
-    // Past this point we are responsible for releasing the mutex.
 
-    // Close one or both of the two ends.
-    int res = _channel_close_interpreter(chan, PyInterpreterState_GetID(interp), send-recv);
-    PyThread_release_lock(mutex);
-    return res;
+finally:
+    PyThread_release_lock(channels->mutex);
+    return err;
 }
 
-static int
-_channel_close(_channels *channels, int64_t id, int end, int force)
-{
-    return _channels_close(channels, id, NULL, end, force);
-}
+PyDoc_STRVAR(channel_info_doc,
+"ChannelInfo\n\
+\n\
+A named tuple of a channel's state.");
+
+static PyStructSequence_Field channel_info_fields[] = {
+    {"open", "both ends are open"},
+    {"closing", "send is closed, recv is non-empty"},
+    {"closed", "both ends are closed"},
+    {"count", "queued objects"},
+
+    {"num_interp_send", "interpreters bound to the send end"},
+    {"num_interp_send_released",
+     "interpreters bound to the send end and released"},
+
+    {"num_interp_recv", "interpreters bound to the send end"},
+    {"num_interp_recv_released",
+     "interpreters bound to the send end and released"},
+
+    {"num_interp_both", "interpreters bound to both ends"},
+    {"num_interp_both_released",
+     "interpreters bound to both ends and released_from_both"},
+    {"num_interp_both_send_released",
+     "interpreters bound to both ends and released_from_the send end"},
+    {"num_interp_both_recv_released",
+     "interpreters bound to both ends and released_from_the recv end"},
+
+    {"send_associated", "current interpreter is bound to the send end"},
+    {"send_released", "current interpreter *was* bound to the send end"},
+    {"recv_associated", "current interpreter is bound to the recv end"},
+    {"recv_released", "current interpreter *was* bound to the recv end"},
+    {0}
+};
 
-static int
-_channel_is_associated(_channels *channels, int64_t cid, int64_t interp,
-                       int send)
+static PyStructSequence_Desc channel_info_desc = {
+    .name = MODULE_NAME ".ChannelInfo",
+    .doc = channel_info_doc,
+    .fields = channel_info_fields,
+    .n_in_sequence = 8,
+};
+
+static PyObject *
+new_channel_info(PyObject *mod, struct channel_info *info)
 {
-    _PyChannelState *chan = NULL;
-    int err = _channels_lookup(channels, cid, NULL, &chan);
-    if (err != 0) {
-        return err;
-    }
-    else if (send && chan->closing != NULL) {
-        return ERR_CHANNEL_CLOSED;
+    module_state *state = get_module_state(mod);
+    if (state == NULL) {
+        return NULL;
     }
 
-    _channelend *end = _channelend_find(send ? chan->ends->send : chan->ends->recv,
-                                        interp, NULL);
+    assert(state->ChannelInfoType != NULL);
+    PyObject *self = PyStructSequence_New(state->ChannelInfoType);
+    if (self == NULL) {
+        return NULL;
+    }
 
-    return (end != NULL && end->open);
+    int pos = 0;
+#define SET_BOOL(val) \
+    PyStructSequence_SET_ITEM(self, pos++, \
+                              Py_NewRef(val ? Py_True : Py_False))
+#define SET_COUNT(val) \
+    do { \
+        PyObject *obj = PyLong_FromLongLong(val); \
+        if (obj == NULL) { \
+            Py_CLEAR(info); \
+            return NULL; \
+        } \
+        PyStructSequence_SET_ITEM(self, pos++, obj); \
+    } while(0)
+    SET_BOOL(info->status.closed == 0);
+    SET_BOOL(info->status.closed == -1);
+    SET_BOOL(info->status.closed == 1);
+    SET_COUNT(info->count);
+    SET_COUNT(info->status.all.nsend_only);
+    SET_COUNT(info->status.all.nsend_only_released);
+    SET_COUNT(info->status.all.nrecv_only);
+    SET_COUNT(info->status.all.nrecv_only_released);
+    SET_COUNT(info->status.all.nboth);
+    SET_COUNT(info->status.all.nboth_released);
+    SET_COUNT(info->status.all.nboth_send_released);
+    SET_COUNT(info->status.all.nboth_recv_released);
+    SET_BOOL(info->status.cur.send == 1);
+    SET_BOOL(info->status.cur.send == -1);
+    SET_BOOL(info->status.cur.recv == 1);
+    SET_BOOL(info->status.cur.recv == -1);
+#undef SET_COUNT
+#undef SET_BOOL
+    assert(!PyErr_Occurred());
+    return self;
 }
 
+
 /* ChannelID class */
 
 typedef struct channelid {
     PyObject_HEAD
-    int64_t id;
+    int64_t cid;
     int end;
     int resolve;
     _channels *channels;
@@ -1524,17 +2340,20 @@ typedef struct channelid {
 struct channel_id_converter_data {
     PyObject *module;
     int64_t cid;
+    int end;
 };
 
 static int
 channel_id_converter(PyObject *arg, void *ptr)
 {
     int64_t cid;
+    int end = 0;
     struct channel_id_converter_data *data = ptr;
     module_state *state = get_module_state(data->module);
     assert(state != NULL);
     if (PyObject_TypeCheck(arg, state->ChannelIDType)) {
-        cid = ((channelid *)arg)->id;
+        cid = ((channelid *)arg)->cid;
+        end = ((channelid *)arg)->end;
     }
     else if (PyIndex_Check(arg)) {
         cid = PyLong_AsLongLong(arg);
@@ -1554,6 +2373,7 @@ channel_id_converter(PyObject *arg, void *ptr)
         return 0;
     }
     data->cid = cid;
+    data->end = end;
     return 1;
 }
 
@@ -1567,7 +2387,7 @@ newchannelid(PyTypeObject *cls, int64_t cid, int end, _channels *channels,
     if (self == NULL) {
         return -1;
     }
-    self->id = cid;
+    self->cid = cid;
     self->end = end;
     self->resolve = resolve;
     self->channels = channels;
@@ -1595,6 +2415,7 @@ _channelid_new(PyObject *mod, PyTypeObject *cls,
 {
     static char *kwlist[] = {"id", "send", "recv", "force", "_resolve", NULL};
     int64_t cid;
+    int end;
     struct channel_id_converter_data cid_data = {
         .module = mod,
     };
@@ -1609,6 +2430,7 @@ _channelid_new(PyObject *mod, PyTypeObject *cls,
         return NULL;
     }
     cid = cid_data.cid;
+    end = cid_data.end;
 
     // Handle "send" and "recv".
     if (send == 0 && recv == 0) {
@@ -1616,33 +2438,36 @@ _channelid_new(PyObject *mod, PyTypeObject *cls,
                         "'send' and 'recv' cannot both be False");
         return NULL;
     }
-
-    int end = 0;
-    if (send == 1) {
+    else if (send == 1) {
         if (recv == 0 || recv == -1) {
             end = CHANNEL_SEND;
         }
+        else {
+            assert(recv == 1);
+            end = 0;
+        }
     }
     else if (recv == 1) {
+        assert(send == 0 || send == -1);
         end = CHANNEL_RECV;
     }
 
-    PyObject *id = NULL;
+    PyObject *cidobj = NULL;
     int err = newchannelid(cls, cid, end, _global_channels(),
                            force, resolve,
-                           (channelid **)&id);
+                           (channelid **)&cidobj);
     if (handle_channel_error(err, mod, cid)) {
-        assert(id == NULL);
+        assert(cidobj == NULL);
         return NULL;
     }
-    assert(id != NULL);
-    return id;
+    assert(cidobj != NULL);
+    return cidobj;
 }
 
 static void
 channelid_dealloc(PyObject *self)
 {
-    int64_t cid = ((channelid *)self)->id;
+    int64_t cid = ((channelid *)self)->cid;
     _channels *channels = ((channelid *)self)->channels;
 
     PyTypeObject *tp = Py_TYPE(self);
@@ -1655,7 +2480,7 @@ channelid_dealloc(PyObject *self)
     // like we do for _abc._abc_data?
     Py_DECREF(tp);
 
-    _channels_drop_id_object(channels, cid);
+    _channels_release_cid_object(channels, cid);
 }
 
 static PyObject *
@@ -1664,44 +2489,44 @@ channelid_repr(PyObject *self)
     PyTypeObject *type = Py_TYPE(self);
     const char *name = _PyType_Name(type);
 
-    channelid *cid = (channelid *)self;
+    channelid *cidobj = (channelid *)self;
     const char *fmt;
-    if (cid->end == CHANNEL_SEND) {
+    if (cidobj->end == CHANNEL_SEND) {
         fmt = "%s(%" PRId64 ", send=True)";
     }
-    else if (cid->end == CHANNEL_RECV) {
+    else if (cidobj->end == CHANNEL_RECV) {
         fmt = "%s(%" PRId64 ", recv=True)";
     }
     else {
         fmt = "%s(%" PRId64 ")";
     }
-    return PyUnicode_FromFormat(fmt, name, cid->id);
+    return PyUnicode_FromFormat(fmt, name, cidobj->cid);
 }
 
 static PyObject *
 channelid_str(PyObject *self)
 {
-    channelid *cid = (channelid *)self;
-    return PyUnicode_FromFormat("%" PRId64 "", cid->id);
+    channelid *cidobj = (channelid *)self;
+    return PyUnicode_FromFormat("%" PRId64 "", cidobj->cid);
 }
 
 static PyObject *
 channelid_int(PyObject *self)
 {
-    channelid *cid = (channelid *)self;
-    return PyLong_FromLongLong(cid->id);
+    channelid *cidobj = (channelid *)self;
+    return PyLong_FromLongLong(cidobj->cid);
 }
 
 static Py_hash_t
 channelid_hash(PyObject *self)
 {
-    channelid *cid = (channelid *)self;
-    PyObject *id = PyLong_FromLongLong(cid->id);
-    if (id == NULL) {
+    channelid *cidobj = (channelid *)self;
+    PyObject *pyid = PyLong_FromLongLong(cidobj->cid);
+    if (pyid == NULL) {
         return -1;
     }
-    Py_hash_t hash = PyObject_Hash(id);
-    Py_DECREF(id);
+    Py_hash_t hash = PyObject_Hash(pyid);
+    Py_DECREF(pyid);
     return hash;
 }
 
@@ -1727,11 +2552,11 @@ channelid_richcompare(PyObject *self, PyObject *other, int op)
         goto done;
     }
 
-    channelid *cid = (channelid *)self;
+    channelid *cidobj = (channelid *)self;
     int equal;
     if (PyObject_TypeCheck(other, state->ChannelIDType)) {
-        channelid *othercid = (channelid *)other;
-        equal = (cid->end == othercid->end) && (cid->id == othercid->id);
+        channelid *othercidobj = (channelid *)other;
+        equal = (cidobj->end == othercidobj->end) && (cidobj->cid == othercidobj->cid);
     }
     else if (PyLong_Check(other)) {
         /* Fast path */
@@ -1740,10 +2565,10 @@ channelid_richcompare(PyObject *self, PyObject *other, int op)
         if (othercid == -1 && PyErr_Occurred()) {
             goto done;
         }
-        equal = !overflow && (othercid >= 0) && (cid->id == othercid);
+        equal = !overflow && (othercid >= 0) && (cidobj->cid == othercid);
     }
     else if (PyNumber_Check(other)) {
-        PyObject *pyid = PyLong_FromLongLong(cid->id);
+        PyObject *pyid = PyLong_FromLongLong(cidobj->cid);
         if (pyid == NULL) {
             goto done;
         }
@@ -1768,25 +2593,16 @@ channelid_richcompare(PyObject *self, PyObject *other, int op)
     return res;
 }
 
+static PyTypeObject * _get_current_channelend_type(int end);
+
 static PyObject *
-_channel_from_cid(PyObject *cid, int end)
+_channelobj_from_cidobj(PyObject *cidobj, int end)
 {
-    PyObject *highlevel = PyImport_ImportModule("interpreters");
-    if (highlevel == NULL) {
-        PyErr_Clear();
-        highlevel = PyImport_ImportModule("test.support.interpreters");
-        if (highlevel == NULL) {
-            return NULL;
-        }
-    }
-    const char *clsname = (end == CHANNEL_RECV) ? "RecvChannel" :
-                                                  "SendChannel";
-    PyObject *cls = PyObject_GetAttrString(highlevel, clsname);
-    Py_DECREF(highlevel);
+    PyObject *cls = (PyObject *)_get_current_channelend_type(end);
     if (cls == NULL) {
         return NULL;
     }
-    PyObject *chan = PyObject_CallFunctionObjArgs(cls, cid, NULL);
+    PyObject *chan = PyObject_CallFunctionObjArgs(cls, cidobj, NULL);
     Py_DECREF(cls);
     if (chan == NULL) {
         return NULL;
@@ -1795,7 +2611,7 @@ _channel_from_cid(PyObject *cid, int end)
 }
 
 struct _channelid_xid {
-    int64_t id;
+    int64_t cid;
     int end;
     int resolve;
 };
@@ -1817,16 +2633,16 @@ _channelid_from_xid(_PyCrossInterpreterData *data)
     }
 
     // Note that we do not preserve the "resolve" flag.
-    PyObject *cid = NULL;
-    int err = newchannelid(state->ChannelIDType, xid->id, xid->end,
+    PyObject *cidobj = NULL;
+    int err = newchannelid(state->ChannelIDType, xid->cid, xid->end,
                            _global_channels(), 0, 0,
-                           (channelid **)&cid);
+                           (channelid **)&cidobj);
     if (err != 0) {
-        assert(cid == NULL);
-        (void)handle_channel_error(err, mod, xid->id);
+        assert(cidobj == NULL);
+        (void)handle_channel_error(err, mod, xid->cid);
         goto done;
     }
-    assert(cid != NULL);
+    assert(cidobj != NULL);
     if (xid->end == 0) {
         goto done;
     }
@@ -1835,17 +2651,17 @@ _channelid_from_xid(_PyCrossInterpreterData *data)
     }
 
     /* Try returning a high-level channel end but fall back to the ID. */
-    PyObject *chan = _channel_from_cid(cid, xid->end);
+    PyObject *chan = _channelobj_from_cidobj(cidobj, xid->end);
     if (chan == NULL) {
         PyErr_Clear();
         goto done;
     }
-    Py_DECREF(cid);
-    cid = chan;
+    Py_DECREF(cidobj);
+    cidobj = chan;
 
 done:
     Py_DECREF(mod);
-    return cid;
+    return cidobj;
 }
 
 static int
@@ -1860,7 +2676,7 @@ _channelid_shared(PyThreadState *tstate, PyObject *obj,
         return -1;
     }
     struct _channelid_xid *xid = (struct _channelid_xid *)data->data;
-    xid->id = ((channelid *)obj)->id;
+    xid->cid = ((channelid *)obj)->cid;
     xid->end = ((channelid *)obj)->end;
     xid->resolve = ((channelid *)obj)->resolve;
     return 0;
@@ -1870,30 +2686,30 @@ static PyObject *
 channelid_end(PyObject *self, void *end)
 {
     int force = 1;
-    channelid *cid = (channelid *)self;
+    channelid *cidobj = (channelid *)self;
     if (end != NULL) {
-        PyObject *id = NULL;
-        int err = newchannelid(Py_TYPE(self), cid->id, *(int *)end,
-                               cid->channels, force, cid->resolve,
-                               (channelid **)&id);
+        PyObject *obj = NULL;
+        int err = newchannelid(Py_TYPE(self), cidobj->cid, *(int *)end,
+                               cidobj->channels, force, cidobj->resolve,
+                               (channelid **)&obj);
         if (err != 0) {
-            assert(id == NULL);
+            assert(obj == NULL);
             PyObject *mod = get_module_from_type(Py_TYPE(self));
             if (mod == NULL) {
                 return NULL;
             }
-            (void)handle_channel_error(err, mod, cid->id);
+            (void)handle_channel_error(err, mod, cidobj->cid);
             Py_DECREF(mod);
             return NULL;
         }
-        assert(id != NULL);
-        return id;
+        assert(obj != NULL);
+        return obj;
     }
 
-    if (cid->end == CHANNEL_SEND) {
+    if (cidobj->end == CHANNEL_SEND) {
         return PyUnicode_InternFromString("send");
     }
-    if (cid->end == CHANNEL_RECV) {
+    if (cidobj->end == CHANNEL_RECV) {
         return PyUnicode_InternFromString("recv");
     }
     return PyUnicode_InternFromString("both");
@@ -1915,7 +2731,7 @@ static PyGetSetDef channelid_getsets[] = {
 PyDoc_STRVAR(channelid_doc,
 "A channel ID identifies a channel and may be used as an int.");
 
-static PyType_Slot ChannelIDType_slots[] = {
+static PyType_Slot channelid_typeslots[] = {
     {Py_tp_dealloc, (destructor)channelid_dealloc},
     {Py_tp_doc, (void *)channelid_doc},
     {Py_tp_repr, (reprfunc)channelid_repr},
@@ -1929,15 +2745,118 @@ static PyType_Slot ChannelIDType_slots[] = {
     {0, NULL},
 };
 
-static PyType_Spec ChannelIDType_spec = {
+static PyType_Spec channelid_typespec = {
     .name = MODULE_NAME ".ChannelID",
     .basicsize = sizeof(channelid),
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
               Py_TPFLAGS_DISALLOW_INSTANTIATION | Py_TPFLAGS_IMMUTABLETYPE),
-    .slots = ChannelIDType_slots,
+    .slots = channelid_typeslots,
 };
 
 
+/* SendChannel and RecvChannel classes */
+
+// XXX Use a new __xid__ protocol instead?
+
+static PyTypeObject *
+_get_current_channelend_type(int end)
+{
+    module_state *state = _get_current_module_state();
+    if (state == NULL) {
+        return NULL;
+    }
+    PyTypeObject *cls;
+    if (end == CHANNEL_SEND) {
+        cls = state->send_channel_type;
+    }
+    else {
+        assert(end == CHANNEL_RECV);
+        cls = state->recv_channel_type;
+    }
+    if (cls == NULL) {
+        PyObject *highlevel = PyImport_ImportModule("interpreters");
+        if (highlevel == NULL) {
+            PyErr_Clear();
+            highlevel = PyImport_ImportModule("test.support.interpreters");
+            if (highlevel == NULL) {
+                return NULL;
+            }
+        }
+        Py_DECREF(highlevel);
+        if (end == CHANNEL_SEND) {
+            cls = state->send_channel_type;
+        }
+        else {
+            cls = state->recv_channel_type;
+        }
+        assert(cls != NULL);
+    }
+    return cls;
+}
+
+static PyObject *
+_channelend_from_xid(_PyCrossInterpreterData *data)
+{
+    channelid *cidobj = (channelid *)_channelid_from_xid(data);
+    if (cidobj == NULL) {
+        return NULL;
+    }
+    PyTypeObject *cls = _get_current_channelend_type(cidobj->end);
+    if (cls == NULL) {
+        Py_DECREF(cidobj);
+        return NULL;
+    }
+    PyObject *obj = PyObject_CallOneArg((PyObject *)cls, (PyObject *)cidobj);
+    Py_DECREF(cidobj);
+    return obj;
+}
+
+static int
+_channelend_shared(PyThreadState *tstate, PyObject *obj,
+                    _PyCrossInterpreterData *data)
+{
+    PyObject *cidobj = PyObject_GetAttrString(obj, "_id");
+    if (cidobj == NULL) {
+        return -1;
+    }
+    int res = _channelid_shared(tstate, cidobj, data);
+    Py_DECREF(cidobj);
+    if (res < 0) {
+        return -1;
+    }
+    data->new_object = _channelend_from_xid;
+    return 0;
+}
+
+static int
+set_channelend_types(PyObject *mod, PyTypeObject *send, PyTypeObject *recv)
+{
+    module_state *state = get_module_state(mod);
+    if (state == NULL) {
+        return -1;
+    }
+    struct xid_class_registry *xid_classes = &state->xid_classes;
+
+    if (state->send_channel_type != NULL
+        || state->recv_channel_type != NULL)
+    {
+        PyErr_SetString(PyExc_TypeError, "already registered");
+        return -1;
+    }
+    state->send_channel_type = (PyTypeObject *)Py_NewRef(send);
+    state->recv_channel_type = (PyTypeObject *)Py_NewRef(recv);
+
+    if (register_xid_class(send, _channelend_shared, xid_classes)) {
+        return -1;
+    }
+    if (register_xid_class(recv, _channelend_shared, xid_classes)) {
+        return -1;
+    }
+
+    return 0;
+}
+
+
 /* module level code ********************************************************/
 
 /* globals is the process-global state for the module.  It holds all
@@ -1993,15 +2912,15 @@ clear_interpreter(void *data)
     }
     PyInterpreterState *interp = (PyInterpreterState *)data;
     assert(interp == _get_current_interp());
-    int64_t id = PyInterpreterState_GetID(interp);
-    _channels_drop_interpreter(&_globals.channels, id);
+    int64_t interpid = PyInterpreterState_GetID(interp);
+    _channels_clear_interpreter(&_globals.channels, interpid);
 }
 
 
 static PyObject *
-channel_create(PyObject *self, PyObject *Py_UNUSED(ignored))
+channelsmod_create(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
-    int64_t cid = _channel_create(&_globals.channels);
+    int64_t cid = channel_create(&_globals.channels);
     if (cid < 0) {
         (void)handle_channel_error(-1, self, cid);
         return NULL;
@@ -2010,30 +2929,30 @@ channel_create(PyObject *self, PyObject *Py_UNUSED(ignored))
     if (state == NULL) {
         return NULL;
     }
-    PyObject *id = NULL;
+    PyObject *cidobj = NULL;
     int err = newchannelid(state->ChannelIDType, cid, 0,
                            &_globals.channels, 0, 0,
-                           (channelid **)&id);
+                           (channelid **)&cidobj);
     if (handle_channel_error(err, self, cid)) {
-        assert(id == NULL);
-        err = _channel_destroy(&_globals.channels, cid);
+        assert(cidobj == NULL);
+        err = channel_destroy(&_globals.channels, cid);
         if (handle_channel_error(err, self, cid)) {
             // XXX issue a warning?
         }
         return NULL;
     }
-    assert(id != NULL);
-    assert(((channelid *)id)->channels != NULL);
-    return id;
+    assert(cidobj != NULL);
+    assert(((channelid *)cidobj)->channels != NULL);
+    return cidobj;
 }
 
-PyDoc_STRVAR(channel_create_doc,
+PyDoc_STRVAR(channelsmod_create_doc,
 "channel_create() -> cid\n\
 \n\
 Create a new cross-interpreter channel and return a unique generated ID.");
 
 static PyObject *
-channel_destroy(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_destroy(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"cid", NULL};
     int64_t cid;
@@ -2046,21 +2965,21 @@ channel_destroy(PyObject *self, PyObject *args, PyObject *kwds)
     }
     cid = cid_data.cid;
 
-    int err = _channel_destroy(&_globals.channels, cid);
+    int err = channel_destroy(&_globals.channels, cid);
     if (handle_channel_error(err, self, cid)) {
         return NULL;
     }
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(channel_destroy_doc,
+PyDoc_STRVAR(channelsmod_destroy_doc,
 "channel_destroy(cid)\n\
 \n\
 Close and finalize the channel.  Afterward attempts to use the channel\n\
 will behave as though it never existed.");
 
 static PyObject *
-channel_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
+channelsmod_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     int64_t count = 0;
     int64_t *cids = _channels_list_all(&_globals.channels, &count);
@@ -2082,17 +3001,17 @@ channel_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
     }
     int64_t *cur = cids;
     for (int64_t i=0; i < count; cur++, i++) {
-        PyObject *id = NULL;
+        PyObject *cidobj = NULL;
         int err = newchannelid(state->ChannelIDType, *cur, 0,
                                &_globals.channels, 0, 0,
-                               (channelid **)&id);
+                               (channelid **)&cidobj);
         if (handle_channel_error(err, self, *cur)) {
-            assert(id == NULL);
+            assert(cidobj == NULL);
             Py_SETREF(ids, NULL);
             break;
         }
-        assert(id != NULL);
-        PyList_SET_ITEM(ids, (Py_ssize_t)i, id);
+        assert(cidobj != NULL);
+        PyList_SET_ITEM(ids, (Py_ssize_t)i, cidobj);
     }
 
 finally:
@@ -2100,13 +3019,13 @@ channel_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
     return ids;
 }
 
-PyDoc_STRVAR(channel_list_all_doc,
+PyDoc_STRVAR(channelsmod_list_all_doc,
 "channel_list_all() -> [cid]\n\
 \n\
 Return the list of all IDs for active channels.");
 
 static PyObject *
-channel_list_interpreters(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_list_interpreters(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"cid", "send", NULL};
     int64_t cid;            /* Channel ID */
@@ -2114,8 +3033,8 @@ channel_list_interpreters(PyObject *self, PyObject *args, PyObject *kwds)
         .module = self,
     };
     int send = 0;           /* Send or receive end? */
-    int64_t id;
-    PyObject *ids, *id_obj;
+    int64_t interpid;
+    PyObject *ids, *interpid_obj;
     PyInterpreterState *interp;
 
     if (!PyArg_ParseTupleAndKeywords(
@@ -2132,20 +3051,20 @@ channel_list_interpreters(PyObject *self, PyObject *args, PyObject *kwds)
 
     interp = PyInterpreterState_Head();
     while (interp != NULL) {
-        id = PyInterpreterState_GetID(interp);
-        assert(id >= 0);
-        int res = _channel_is_associated(&_globals.channels, cid, id, send);
+        interpid = PyInterpreterState_GetID(interp);
+        assert(interpid >= 0);
+        int res = channel_is_associated(&_globals.channels, cid, interpid, send);
         if (res < 0) {
             (void)handle_channel_error(res, self, cid);
             goto except;
         }
         if (res) {
-            id_obj = _PyInterpreterState_GetIDObject(interp);
-            if (id_obj == NULL) {
+            interpid_obj = PyInterpreterState_GetIDObject(interp);
+            if (interpid_obj == NULL) {
                 goto except;
             }
-            res = PyList_Insert(ids, 0, id_obj);
-            Py_DECREF(id_obj);
+            res = PyList_Insert(ids, 0, interpid_obj);
+            Py_DECREF(interpid_obj);
             if (res < 0) {
                 goto except;
             }
@@ -2162,7 +3081,7 @@ channel_list_interpreters(PyObject *self, PyObject *args, PyObject *kwds)
     return ids;
 }
 
-PyDoc_STRVAR(channel_list_interpreters_doc,
+PyDoc_STRVAR(channelsmod_list_interpreters_doc,
 "channel_list_interpreters(cid, *, send) -> [id]\n\
 \n\
 Return the list of all interpreter IDs associated with an end of the channel.\n\
@@ -2172,34 +3091,100 @@ receive end.");
 
 
 static PyObject *
-channel_send(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_send(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    static char *kwlist[] = {"cid", "obj", NULL};
-    int64_t cid;
+    static char *kwlist[] = {"cid", "obj", "blocking", "timeout", NULL};
     struct channel_id_converter_data cid_data = {
         .module = self,
     };
     PyObject *obj;
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&O:channel_send", kwlist,
-                                     channel_id_converter, &cid_data, &obj)) {
+    int blocking = 1;
+    PyObject *timeout_obj = NULL;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&O|$pO:channel_send", kwlist,
+                                     channel_id_converter, &cid_data, &obj,
+                                     &blocking, &timeout_obj)) {
+        return NULL;
+    }
+
+    int64_t cid = cid_data.cid;
+    PY_TIMEOUT_T timeout;
+    if (PyThread_ParseTimeoutArg(timeout_obj, blocking, &timeout) < 0) {
+        return NULL;
+    }
+
+    /* Queue up the object. */
+    int err = 0;
+    if (blocking) {
+        err = channel_send_wait(&_globals.channels, cid, obj, timeout);
+    }
+    else {
+        err = channel_send(&_globals.channels, cid, obj, NULL);
+    }
+    if (handle_channel_error(err, self, cid)) {
+        return NULL;
+    }
+
+    Py_RETURN_NONE;
+}
+
+PyDoc_STRVAR(channelsmod_send_doc,
+"channel_send(cid, obj, blocking=True)\n\
+\n\
+Add the object's data to the channel's queue.\n\
+By default this waits for the object to be received.");
+
+static PyObject *
+channelsmod_send_buffer(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"cid", "obj", "blocking", "timeout", NULL};
+    struct channel_id_converter_data cid_data = {
+        .module = self,
+    };
+    PyObject *obj;
+    int blocking = 1;
+    PyObject *timeout_obj = NULL;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "O&O|$pO:channel_send_buffer", kwlist,
+                                     channel_id_converter, &cid_data, &obj,
+                                     &blocking, &timeout_obj)) {
         return NULL;
     }
-    cid = cid_data.cid;
 
-    int err = _channel_send(&_globals.channels, cid, obj);
+    int64_t cid = cid_data.cid;
+    PY_TIMEOUT_T timeout;
+    if (PyThread_ParseTimeoutArg(timeout_obj, blocking, &timeout) < 0) {
+        return NULL;
+    }
+
+    PyObject *tempobj = PyMemoryView_FromObject(obj);
+    if (tempobj == NULL) {
+        return NULL;
+    }
+
+    /* Queue up the object. */
+    int err = 0;
+    if (blocking) {
+        err = channel_send_wait(&_globals.channels, cid, tempobj, timeout);
+    }
+    else {
+        err = channel_send(&_globals.channels, cid, tempobj, NULL);
+    }
+    Py_DECREF(tempobj);
     if (handle_channel_error(err, self, cid)) {
         return NULL;
     }
+
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(channel_send_doc,
-"channel_send(cid, obj)\n\
+PyDoc_STRVAR(channelsmod_send_buffer_doc,
+"channel_send_buffer(cid, obj, blocking=True)\n\
 \n\
-Add the object's data to the channel's queue.");
+Add the object's buffer to the channel's queue.\n\
+By default this waits for the object to be received.");
 
 static PyObject *
-channel_recv(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_recv(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"cid", "default", NULL};
     int64_t cid;
@@ -2214,7 +3199,7 @@ channel_recv(PyObject *self, PyObject *args, PyObject *kwds)
     cid = cid_data.cid;
 
     PyObject *obj = NULL;
-    int err = _channel_recv(&_globals.channels, cid, &obj);
+    int err = channel_recv(&_globals.channels, cid, &obj);
     if (handle_channel_error(err, self, cid)) {
         return NULL;
     }
@@ -2231,7 +3216,7 @@ channel_recv(PyObject *self, PyObject *args, PyObject *kwds)
     return obj;
 }
 
-PyDoc_STRVAR(channel_recv_doc,
+PyDoc_STRVAR(channelsmod_recv_doc,
 "channel_recv(cid, [default]) -> obj\n\
 \n\
 Return a new object from the data at the front of the channel's queue.\n\
@@ -2240,7 +3225,7 @@ If there is nothing to receive then raise ChannelEmptyError, unless\n\
 a default value is provided.  In that case return it.");
 
 static PyObject *
-channel_close(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_close(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"cid", "send", "recv", "force", NULL};
     int64_t cid;
@@ -2258,14 +3243,14 @@ channel_close(PyObject *self, PyObject *args, PyObject *kwds)
     }
     cid = cid_data.cid;
 
-    int err = _channel_close(&_globals.channels, cid, send-recv, force);
+    int err = channel_close(&_globals.channels, cid, send-recv, force);
     if (handle_channel_error(err, self, cid)) {
         return NULL;
     }
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(channel_close_doc,
+PyDoc_STRVAR(channelsmod_close_doc,
 "channel_close(cid, *, send=None, recv=None, force=False)\n\
 \n\
 Close the channel for all interpreters.\n\
@@ -2293,7 +3278,7 @@ Once the channel's ID has no more ref counts in any interpreter\n\
 the channel will be destroyed.");
 
 static PyObject *
-channel_release(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_release(PyObject *self, PyObject *args, PyObject *kwds)
 {
     // Note that only the current interpreter is affected.
     static char *kwlist[] = {"cid", "send", "recv", "force", NULL};
@@ -2319,14 +3304,14 @@ channel_release(PyObject *self, PyObject *args, PyObject *kwds)
     // XXX Handle force is True.
     // XXX Fix implicit release.
 
-    int err = _channel_drop(&_globals.channels, cid, send, recv);
+    int err = channel_release(&_globals.channels, cid, send, recv);
     if (handle_channel_error(err, self, cid)) {
         return NULL;
     }
     Py_RETURN_NONE;
 }
 
-PyDoc_STRVAR(channel_release_doc,
+PyDoc_STRVAR(channelsmod_release_doc,
 "channel_release(cid, *, send=None, recv=None, force=True)\n\
 \n\
 Close the channel for the current interpreter.  'send' and 'recv'\n\
@@ -2334,40 +3319,101 @@ Close the channel for the current interpreter.  'send' and 'recv'\n\
 ends are closed.  Closing an already closed end is a noop.");
 
 static PyObject *
-channel__channel_id(PyObject *self, PyObject *args, PyObject *kwds)
+channelsmod_get_info(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"cid", NULL};
+    struct channel_id_converter_data cid_data = {
+        .module = self,
+    };
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "O&:_get_info", kwlist,
+                                     channel_id_converter, &cid_data)) {
+        return NULL;
+    }
+    int64_t cid = cid_data.cid;
+
+    struct channel_info info;
+    int err = _channel_get_info(&_globals.channels, cid, &info);
+    if (handle_channel_error(err, self, cid)) {
+        return NULL;
+    }
+    return new_channel_info(self, &info);
+}
+
+PyDoc_STRVAR(channelsmod_get_info_doc,
+"get_info(cid)\n\
+\n\
+Return details about the channel.");
+
+static PyObject *
+channelsmod__channel_id(PyObject *self, PyObject *args, PyObject *kwds)
 {
     module_state *state = get_module_state(self);
     if (state == NULL) {
         return NULL;
     }
     PyTypeObject *cls = state->ChannelIDType;
+
     PyObject *mod = get_module_from_owned_type(cls);
-    if (mod == NULL) {
+    assert(mod == self);
+    Py_DECREF(mod);
+
+    return _channelid_new(self, cls, args, kwds);
+}
+
+static PyObject *
+channelsmod__register_end_types(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"send", "recv", NULL};
+    PyObject *send;
+    PyObject *recv;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "OO:_register_end_types", kwlist,
+                                     &send, &recv)) {
         return NULL;
     }
-    PyObject *cid = _channelid_new(mod, cls, args, kwds);
-    Py_DECREF(mod);
-    return cid;
+    if (!PyType_Check(send)) {
+        PyErr_SetString(PyExc_TypeError, "expected a type for 'send'");
+        return NULL;
+    }
+    if (!PyType_Check(recv)) {
+        PyErr_SetString(PyExc_TypeError, "expected a type for 'recv'");
+        return NULL;
+    }
+    PyTypeObject *cls_send = (PyTypeObject *)send;
+    PyTypeObject *cls_recv = (PyTypeObject *)recv;
+
+    if (set_channelend_types(self, cls_send, cls_recv) < 0) {
+        return NULL;
+    }
+
+    Py_RETURN_NONE;
 }
 
 static PyMethodDef module_functions[] = {
-    {"create",                    channel_create,
-     METH_NOARGS, channel_create_doc},
-    {"destroy",                   _PyCFunction_CAST(channel_destroy),
-     METH_VARARGS | METH_KEYWORDS, channel_destroy_doc},
-    {"list_all",                  channel_list_all,
-     METH_NOARGS, channel_list_all_doc},
-    {"list_interpreters",         _PyCFunction_CAST(channel_list_interpreters),
-     METH_VARARGS | METH_KEYWORDS, channel_list_interpreters_doc},
-    {"send",                      _PyCFunction_CAST(channel_send),
-     METH_VARARGS | METH_KEYWORDS, channel_send_doc},
-    {"recv",                      _PyCFunction_CAST(channel_recv),
-     METH_VARARGS | METH_KEYWORDS, channel_recv_doc},
-    {"close",                     _PyCFunction_CAST(channel_close),
-     METH_VARARGS | METH_KEYWORDS, channel_close_doc},
-    {"release",                   _PyCFunction_CAST(channel_release),
-     METH_VARARGS | METH_KEYWORDS, channel_release_doc},
-    {"_channel_id",               _PyCFunction_CAST(channel__channel_id),
+    {"create",                     channelsmod_create,
+     METH_NOARGS,                  channelsmod_create_doc},
+    {"destroy",                    _PyCFunction_CAST(channelsmod_destroy),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_destroy_doc},
+    {"list_all",                   channelsmod_list_all,
+     METH_NOARGS,                  channelsmod_list_all_doc},
+    {"list_interpreters",          _PyCFunction_CAST(channelsmod_list_interpreters),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_list_interpreters_doc},
+    {"send",                       _PyCFunction_CAST(channelsmod_send),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_send_doc},
+    {"send_buffer",                _PyCFunction_CAST(channelsmod_send_buffer),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_send_buffer_doc},
+    {"recv",                       _PyCFunction_CAST(channelsmod_recv),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_recv_doc},
+    {"close",                      _PyCFunction_CAST(channelsmod_close),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_close_doc},
+    {"release",                    _PyCFunction_CAST(channelsmod_release),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_release_doc},
+    {"get_info",                   _PyCFunction_CAST(channelsmod_get_info),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_get_info_doc},
+    {"_channel_id",                _PyCFunction_CAST(channelsmod__channel_id),
+     METH_VARARGS | METH_KEYWORDS, NULL},
+    {"_register_end_types",        _PyCFunction_CAST(channelsmod__register_end_types),
      METH_VARARGS | METH_KEYWORDS, NULL},
 
     {NULL,                        NULL}           /* sentinel */
@@ -2386,6 +3432,13 @@ module_exec(PyObject *mod)
     if (_globals_init() != 0) {
         return -1;
     }
+    struct xid_class_registry *xid_classes = NULL;
+
+    module_state *state = get_module_state(mod);
+    if (state == NULL) {
+        goto error;
+    }
+    xid_classes = &state->xid_classes;
 
     /* Add exception types */
     if (exceptions_init(mod) != 0) {
@@ -2393,25 +3446,45 @@ module_exec(PyObject *mod)
     }
 
     /* Add other types */
-    module_state *state = get_module_state(mod);
-    if (state == NULL) {
+
+    // ChannelInfo
+    state->ChannelInfoType = PyStructSequence_NewType(&channel_info_desc);
+    if (state->ChannelInfoType == NULL) {
+        goto error;
+    }
+    if (PyModule_AddType(mod, state->ChannelInfoType) < 0) {
         goto error;
     }
 
     // ChannelID
     state->ChannelIDType = add_new_type(
-            mod, &ChannelIDType_spec, _channelid_shared);
+            mod, &channelid_typespec, _channelid_shared, xid_classes);
     if (state->ChannelIDType == NULL) {
         goto error;
     }
 
-    // Make sure chnnels drop objects owned by this interpreter
+    // XIBufferView
+    state->XIBufferViewType = add_new_type(mod, &XIBufferViewType_spec, NULL,
+                                           xid_classes);
+    if (state->XIBufferViewType == NULL) {
+        goto error;
+    }
+
+    // Register external types.
+    if (register_builtin_xid_types(xid_classes) < 0) {
+        goto error;
+    }
+
+    /* Make sure chnnels drop objects owned by this interpreter. */
     PyInterpreterState *interp = _get_current_interp();
-    _Py_AtExit(interp, clear_interpreter, (void *)interp);
+    PyUnstable_AtExit(interp, clear_interpreter, (void *)interp);
 
     return 0;
 
 error:
+    if (xid_classes != NULL) {
+        clear_xid_class_registry(xid_classes);
+    }
     _globals_fini();
     return -1;
 }
@@ -2436,6 +3509,11 @@ module_clear(PyObject *mod)
 {
     module_state *state = get_module_state(mod);
     assert(state != NULL);
+
+    // Before clearing anything, we unregister the various XID types. */
+    clear_xid_class_registry(&state->xid_classes);
+
+    // Now we clear the module state.
     clear_module_state(state);
     return 0;
 }
@@ -2445,7 +3523,13 @@ module_free(void *mod)
 {
     module_state *state = get_module_state(mod);
     assert(state != NULL);
+
+    // Before clearing anything, we unregister the various XID types. */
+    clear_xid_class_registry(&state->xid_classes);
+
+    // Now we clear the module state.
     clear_module_state(state);
+
     _globals_fini();
 }
 
diff --git a/Modules/_xxsubinterpretersmodule.c b/Modules/_xxsubinterpretersmodule.c
index d7daae254638ec..02c2abed27ddfa 100644
--- a/Modules/_xxsubinterpretersmodule.c
+++ b/Modules/_xxsubinterpretersmodule.c
@@ -1,35 +1,24 @@
-
 /* interpreters module */
 /* low-level access to interpreter primitives */
+
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
 #include "Python.h"
-// XXX This module should not rely on internal API.
-#include "pycore_frame.h"
-#include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "pycore_interpreteridobject.h"
+#include "pycore_crossinterp.h"   // struct _xid
+#include "pycore_pyerrors.h"      // _Py_excinfo
+#include "pycore_initconfig.h"    // _PyErr_SetFromPyStatus()
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+#include "pycore_pystate.h"       // _PyInterpreterState_SetRunningMain()
 
+#include "interpreteridobject.h"
+#include "marshal.h"              // PyMarshal_ReadObjectFromString()
 
-#define MODULE_NAME "_xxsubinterpreters"
 
+#define MODULE_NAME "_xxsubinterpreters"
 
-static const char *
-_copy_raw_string(PyObject *strobj)
-{
-    const char *str = PyUnicode_AsUTF8(strobj);
-    if (str == NULL) {
-        return NULL;
-    }
-    char *copied = PyMem_RawMalloc(strlen(str)+1);
-    if (copied == NULL) {
-        PyErr_NoMemory();
-        return NULL;
-    }
-    strcpy(copied, str);
-    return copied;
-}
 
 static PyInterpreterState *
 _get_current_interp(void)
@@ -39,53 +28,11 @@ _get_current_interp(void)
     return PyInterpreterState_Get();
 }
 
-static PyObject *
-add_new_exception(PyObject *mod, const char *name, PyObject *base)
-{
-    assert(!PyObject_HasAttrString(mod, name));
-    PyObject *exctype = PyErr_NewException(name, base, NULL);
-    if (exctype == NULL) {
-        return NULL;
-    }
-    int res = PyModule_AddType(mod, (PyTypeObject *)exctype);
-    if (res < 0) {
-        Py_DECREF(exctype);
-        return NULL;
-    }
-    return exctype;
-}
-
-#define ADD_NEW_EXCEPTION(MOD, NAME, BASE) \
-    add_new_exception(MOD, MODULE_NAME "." Py_STRINGIFY(NAME), BASE)
-
-static int
-_release_xid_data(_PyCrossInterpreterData *data, int ignoreexc)
-{
-    PyObject *exc;
-    if (ignoreexc) {
-        exc = PyErr_GetRaisedException();
-    }
-    int res = _PyCrossInterpreterData_Release(data);
-    if (res < 0) {
-        /* The owning interpreter is already destroyed. */
-        _PyCrossInterpreterData_Clear(NULL, data);
-        if (ignoreexc) {
-            // XXX Emit a warning?
-            PyErr_Clear();
-        }
-    }
-    if (ignoreexc) {
-        PyErr_SetRaisedException(exc);
-    }
-    return res;
-}
-
 
 /* module state *************************************************************/
 
 typedef struct {
-    /* exceptions */
-    PyObject *RunFailedError;
+    int _notused;
 } module_state;
 
 static inline module_state *
@@ -100,401 +47,173 @@ get_module_state(PyObject *mod)
 static int
 traverse_module_state(module_state *state, visitproc visit, void *arg)
 {
-    /* exceptions */
-    Py_VISIT(state->RunFailedError);
-
     return 0;
 }
 
 static int
 clear_module_state(module_state *state)
 {
-    /* exceptions */
-    Py_CLEAR(state->RunFailedError);
-
     return 0;
 }
 
 
-/* data-sharing-specific code ***********************************************/
-
-struct _sharednsitem {
-    const char *name;
-    _PyCrossInterpreterData data;
-};
-
-static void _sharednsitem_clear(struct _sharednsitem *);  // forward
+/* Python code **************************************************************/
 
-static int
-_sharednsitem_init(struct _sharednsitem *item, PyObject *key, PyObject *value)
+static const char *
+check_code_str(PyUnicodeObject *text)
 {
-    item->name = _copy_raw_string(key);
-    if (item->name == NULL) {
-        return -1;
-    }
-    if (_PyObject_GetCrossInterpreterData(value, &item->data) != 0) {
-        _sharednsitem_clear(item);
-        return -1;
+    assert(text != NULL);
+    if (PyUnicode_GET_LENGTH(text) == 0) {
+        return "too short";
     }
-    return 0;
-}
 
-static void
-_sharednsitem_clear(struct _sharednsitem *item)
-{
-    if (item->name != NULL) {
-        PyMem_RawFree((void *)item->name);
-        item->name = NULL;
-    }
-    (void)_release_xid_data(&item->data, 1);
-}
+    // XXX Verify that it parses?
 
-static int
-_sharednsitem_apply(struct _sharednsitem *item, PyObject *ns)
-{
-    PyObject *name = PyUnicode_FromString(item->name);
-    if (name == NULL) {
-        return -1;
-    }
-    PyObject *value = _PyCrossInterpreterData_NewObject(&item->data);
-    if (value == NULL) {
-        Py_DECREF(name);
-        return -1;
-    }
-    int res = PyDict_SetItem(ns, name, value);
-    Py_DECREF(name);
-    Py_DECREF(value);
-    return res;
+    return NULL;
 }
 
-typedef struct _sharedns {
-    Py_ssize_t len;
-    struct _sharednsitem* items;
-} _sharedns;
-
-static _sharedns *
-_sharedns_new(Py_ssize_t len)
+static const char *
+check_code_object(PyCodeObject *code)
 {
-    _sharedns *shared = PyMem_NEW(_sharedns, 1);
-    if (shared == NULL) {
-        PyErr_NoMemory();
-        return NULL;
+    assert(code != NULL);
+    if (code->co_argcount > 0
+        || code->co_posonlyargcount > 0
+        || code->co_kwonlyargcount > 0
+        || code->co_flags & (CO_VARARGS | CO_VARKEYWORDS))
+    {
+        return "arguments not supported";
     }
-    shared->len = len;
-    shared->items = PyMem_NEW(struct _sharednsitem, len);
-    if (shared->items == NULL) {
-        PyErr_NoMemory();
-        PyMem_Free(shared);
-        return NULL;
+    if (code->co_ncellvars > 0) {
+        return "closures not supported";
     }
-    return shared;
-}
+    // We trust that no code objects under co_consts have unbound cell vars.
 
-static void
-_sharedns_free(_sharedns *shared)
-{
-    for (Py_ssize_t i=0; i < shared->len; i++) {
-        _sharednsitem_clear(&shared->items[i]);
+    if (code->co_executors != NULL
+        || code->_co_instrumentation_version > 0)
+    {
+        return "only basic functions are supported";
     }
-    PyMem_Free(shared->items);
-    PyMem_Free(shared);
-}
-
-static _sharedns *
-_get_shared_ns(PyObject *shareable)
-{
-    if (shareable == NULL || shareable == Py_None) {
-        return NULL;
+    if (code->_co_monitoring != NULL) {
+        return "only basic functions are supported";
     }
-    Py_ssize_t len = PyDict_Size(shareable);
-    if (len == 0) {
-        return NULL;
+    if (code->co_extra != NULL) {
+        return "only basic functions are supported";
     }
 
-    _sharedns *shared = _sharedns_new(len);
-    if (shared == NULL) {
-        return NULL;
-    }
-    Py_ssize_t pos = 0;
-    for (Py_ssize_t i=0; i < len; i++) {
-        PyObject *key, *value;
-        if (PyDict_Next(shareable, &pos, &key, &value) == 0) {
-            break;
-        }
-        if (_sharednsitem_init(&shared->items[i], key, value) != 0) {
-            break;
-        }
-    }
-    if (PyErr_Occurred()) {
-        _sharedns_free(shared);
-        return NULL;
-    }
-    return shared;
-}
-
-static int
-_sharedns_apply(_sharedns *shared, PyObject *ns)
-{
-    for (Py_ssize_t i=0; i < shared->len; i++) {
-        if (_sharednsitem_apply(&shared->items[i], ns) != 0) {
-            return -1;
-        }
-    }
-    return 0;
+    return NULL;
 }
 
-// Ultimately we'd like to preserve enough information about the
-// exception and traceback that we could re-constitute (or at least
-// simulate, a la traceback.TracebackException), and even chain, a copy
-// of the exception in the calling interpreter.
-
-typedef struct _sharedexception {
-    const char *name;
-    const char *msg;
-} _sharedexception;
-
-static const struct _sharedexception no_exception = {
-    .name = NULL,
-    .msg = NULL,
-};
-
-static void
-_sharedexception_clear(_sharedexception *exc)
-{
-    if (exc->name != NULL) {
-        PyMem_RawFree((void *)exc->name);
-    }
-    if (exc->msg != NULL) {
-        PyMem_RawFree((void *)exc->msg);
-    }
-}
+#define RUN_TEXT 1
+#define RUN_CODE 2
 
 static const char *
-_sharedexception_bind(PyObject *exc, _sharedexception *sharedexc)
-{
-    assert(exc != NULL);
-    const char *failure = NULL;
-
-    PyObject *nameobj = PyUnicode_FromFormat("%S", Py_TYPE(exc));
-    if (nameobj == NULL) {
-        failure = "unable to format exception type name";
-        goto error;
-    }
-    sharedexc->name = _copy_raw_string(nameobj);
-    Py_DECREF(nameobj);
-    if (sharedexc->name == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_MemoryError)) {
-            failure = "out of memory copying exception type name";
-        } else {
-            failure = "unable to encode and copy exception type name";
-        }
-        goto error;
-    }
-
-    if (exc != NULL) {
-        PyObject *msgobj = PyUnicode_FromFormat("%S", exc);
-        if (msgobj == NULL) {
-            failure = "unable to format exception message";
-            goto error;
+get_code_str(PyObject *arg, Py_ssize_t *len_p, PyObject **bytes_p, int *flags_p)
+{
+    const char *codestr = NULL;
+    Py_ssize_t len = -1;
+    PyObject *bytes_obj = NULL;
+    int flags = 0;
+
+    if (PyUnicode_Check(arg)) {
+        assert(PyUnicode_CheckExact(arg)
+               && (check_code_str((PyUnicodeObject *)arg) == NULL));
+        codestr = PyUnicode_AsUTF8AndSize(arg, &len);
+        if (codestr == NULL) {
+            return NULL;
         }
-        sharedexc->msg = _copy_raw_string(msgobj);
-        Py_DECREF(msgobj);
-        if (sharedexc->msg == NULL) {
-            if (PyErr_ExceptionMatches(PyExc_MemoryError)) {
-                failure = "out of memory copying exception message";
-            } else {
-                failure = "unable to encode and copy exception message";
-            }
-            goto error;
+        if (strlen(codestr) != (size_t)len) {
+            PyErr_SetString(PyExc_ValueError,
+                            "source code string cannot contain null bytes");
+            return NULL;
         }
+        flags = RUN_TEXT;
     }
+    else {
+        assert(PyCode_Check(arg)
+               && (check_code_object((PyCodeObject *)arg) == NULL));
+        flags = RUN_CODE;
 
-    return NULL;
-
-error:
-    assert(failure != NULL);
-    PyErr_Clear();
-    _sharedexception_clear(sharedexc);
-    *sharedexc = no_exception;
-    return failure;
-}
-
-static void
-_sharedexception_apply(_sharedexception *exc, PyObject *wrapperclass)
-{
-    if (exc->name != NULL) {
-        if (exc->msg != NULL) {
-            PyErr_Format(wrapperclass, "%s: %s",  exc->name, exc->msg);
-        }
-        else {
-            PyErr_SetString(wrapperclass, exc->name);
+        // Serialize the code object.
+        bytes_obj = PyMarshal_WriteObjectToString(arg, Py_MARSHAL_VERSION);
+        if (bytes_obj == NULL) {
+            return NULL;
         }
+        codestr = PyBytes_AS_STRING(bytes_obj);
+        len = PyBytes_GET_SIZE(bytes_obj);
     }
-    else if (exc->msg != NULL) {
-        PyErr_SetString(wrapperclass, exc->msg);
-    }
-    else {
-        PyErr_SetNone(wrapperclass);
-    }
+
+    *flags_p = flags;
+    *bytes_p = bytes_obj;
+    *len_p = len;
+    return codestr;
 }
 
 
 /* interpreter-specific code ************************************************/
 
 static int
-exceptions_init(PyObject *mod)
+_run_script(PyObject *ns, const char *codestr, Py_ssize_t codestrlen, int flags)
 {
-    module_state *state = get_module_state(mod);
-    if (state == NULL) {
-        return -1;
+    PyObject *result = NULL;
+    if (flags & RUN_TEXT) {
+        result = PyRun_StringFlags(codestr, Py_file_input, ns, ns, NULL);
     }
-
-#define ADD(NAME, BASE) \
-    do { \
-        assert(state->NAME == NULL); \
-        state->NAME = ADD_NEW_EXCEPTION(mod, NAME, BASE); \
-        if (state->NAME == NULL) { \
-            return -1; \
-        } \
-    } while (0)
-
-    // An uncaught exception came out of interp_run_string().
-    ADD(RunFailedError, PyExc_RuntimeError);
-#undef ADD
-
-    return 0;
-}
-
-static int
-_is_running(PyInterpreterState *interp)
-{
-    PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
-    if (PyThreadState_Next(tstate) != NULL) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "interpreter has more than one thread");
-        return -1;
-    }
-
-    assert(!PyErr_Occurred());
-    _PyInterpreterFrame *frame = tstate->cframe->current_frame;
-    if (frame == NULL) {
-        return 0;
+    else if (flags & RUN_CODE) {
+        PyObject *code = PyMarshal_ReadObjectFromString(codestr, codestrlen);
+        if (code != NULL) {
+            result = PyEval_EvalCode(code, ns, ns);
+            Py_DECREF(code);
+        }
     }
-    return 1;
-}
-
-static int
-_ensure_not_running(PyInterpreterState *interp)
-{
-    int is_running = _is_running(interp);
-    if (is_running < 0) {
-        return -1;
+    else {
+        Py_UNREACHABLE();
     }
-    if (is_running) {
-        PyErr_Format(PyExc_RuntimeError, "interpreter already running");
+    if (result == NULL) {
         return -1;
     }
+    Py_DECREF(result);  // We throw away the result.
     return 0;
 }
 
 static int
-_run_script(PyInterpreterState *interp, const char *codestr,
-            _sharedns *shared, _sharedexception *sharedexc)
+_run_in_interpreter(PyInterpreterState *interp,
+                    const char *codestr, Py_ssize_t codestrlen,
+                    PyObject *shareables, int flags,
+                    PyObject **p_excinfo)
 {
-    PyObject *excval = NULL;
-    PyObject *main_mod = _PyInterpreterState_GetMainModule(interp);
-    if (main_mod == NULL) {
-        goto error;
-    }
-    PyObject *ns = PyModule_GetDict(main_mod);  // borrowed
-    Py_DECREF(main_mod);
-    if (ns == NULL) {
-        goto error;
-    }
-    Py_INCREF(ns);
-
-    // Apply the cross-interpreter data.
-    if (shared != NULL) {
-        if (_sharedns_apply(shared, ns) != 0) {
-            Py_DECREF(ns);
-            goto error;
-        }
-    }
-
-    // Run the string (see PyRun_SimpleStringFlags).
-    PyObject *result = PyRun_StringFlags(codestr, Py_file_input, ns, ns, NULL);
-    Py_DECREF(ns);
-    if (result == NULL) {
-        goto error;
-    }
-    else {
-        Py_DECREF(result);  // We throw away the result.
-    }
-
-    *sharedexc = no_exception;
-    return 0;
-
-error:
-    excval = PyErr_GetRaisedException();
-    const char *failure = _sharedexception_bind(excval, sharedexc);
-    if (failure != NULL) {
-        fprintf(stderr,
-                "RunFailedError: script raised an uncaught exception (%s)",
-                failure);
-        PyErr_Clear();
-    }
-    Py_XDECREF(excval);
     assert(!PyErr_Occurred());
-    return -1;
-}
-
-static int
-_run_script_in_interpreter(PyObject *mod, PyInterpreterState *interp,
-                           const char *codestr, PyObject *shareables)
-{
-    if (_ensure_not_running(interp) < 0) {
-        return -1;
-    }
-    module_state *state = get_module_state(mod);
-
-    _sharedns *shared = _get_shared_ns(shareables);
-    if (shared == NULL && PyErr_Occurred()) {
+    _PyXI_session session = {0};
+
+    // Prep and switch interpreters.
+    if (_PyXI_Enter(&session, interp, shareables) < 0) {
+        assert(!PyErr_Occurred());
+        PyObject *excinfo = _PyXI_ApplyError(session.error);
+        if (excinfo != NULL) {
+            *p_excinfo = excinfo;
+        }
+        assert(PyErr_Occurred());
         return -1;
     }
 
-    // Switch to interpreter.
-    PyThreadState *save_tstate = NULL;
-    if (interp != PyInterpreterState_Get()) {
-        // XXX Using the "head" thread isn't strictly correct.
-        PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
-        // XXX Possible GILState issues?
-        save_tstate = PyThreadState_Swap(tstate);
-    }
-
     // Run the script.
-    _sharedexception exc = {NULL, NULL};
-    int result = _run_script(interp, codestr, shared, &exc);
+    int res = _run_script(session.main_ns, codestr, codestrlen, flags);
 
-    // Switch back.
-    if (save_tstate != NULL) {
-        PyThreadState_Swap(save_tstate);
-    }
+    // Clean up and switch back.
+    _PyXI_Exit(&session);
 
     // Propagate any exception out to the caller.
-    if (exc.name != NULL) {
-        assert(state != NULL);
-        _sharedexception_apply(&exc, state->RunFailedError);
-    }
-    else if (result != 0) {
-        // We were unable to allocate a shared exception.
-        PyErr_NoMemory();
+    assert(!PyErr_Occurred());
+    if (res < 0) {
+        PyObject *excinfo = _PyXI_ApplyCapturedException(&session);
+        if (excinfo != NULL) {
+            *p_excinfo = excinfo;
+        }
     }
-
-    if (shared != NULL) {
-        _sharedns_free(shared);
+    else {
+        assert(!_PyXI_HasCapturedException(&session));
     }
 
-    return result;
+    return res;
 }
 
 
@@ -512,11 +231,12 @@ interp_create(PyObject *self, PyObject *args, PyObject *kwds)
     }
 
     // Create and initialize the new interpreter.
-    PyThreadState *save_tstate = _PyThreadState_GET();
+    PyThreadState *save_tstate = PyThreadState_Get();
     assert(save_tstate != NULL);
     const PyInterpreterConfig config = isolated
         ? (PyInterpreterConfig)_PyInterpreterConfig_INIT
         : (PyInterpreterConfig)_PyInterpreterConfig_LEGACY_INIT;
+
     // XXX Possible GILState issues?
     PyThreadState *tstate = NULL;
     PyStatus status = Py_NewInterpreterFromConfig(&tstate, &config);
@@ -532,8 +252,9 @@ interp_create(PyObject *self, PyObject *args, PyObject *kwds)
         return NULL;
     }
     assert(tstate != NULL);
+
     PyInterpreterState *interp = PyThreadState_GetInterpreter(tstate);
-    PyObject *idobj = _PyInterpreterState_GetIDObject(interp);
+    PyObject *idobj = PyInterpreterState_GetIDObject(interp);
     if (idobj == NULL) {
         // XXX Possible GILState issues?
         save_tstate = PyThreadState_Swap(tstate);
@@ -541,6 +262,10 @@ interp_create(PyObject *self, PyObject *args, PyObject *kwds)
         PyThreadState_Swap(save_tstate);
         return NULL;
     }
+
+    PyThreadState_Clear(tstate);
+    PyThreadState_Delete(tstate);
+
     _PyInterpreterState_RequireIDRef(interp, 1);
     return idobj;
 }
@@ -563,7 +288,7 @@ interp_destroy(PyObject *self, PyObject *args, PyObject *kwds)
     }
 
     // Look up the interpreter.
-    PyInterpreterState *interp = _PyInterpreterID_LookUp(id);
+    PyInterpreterState *interp = PyInterpreterID_LookUp(id);
     if (interp == NULL) {
         return NULL;
     }
@@ -582,12 +307,14 @@ interp_destroy(PyObject *self, PyObject *args, PyObject *kwds)
     // Ensure the interpreter isn't running.
     /* XXX We *could* support destroying a running interpreter but
        aren't going to worry about it for now. */
-    if (_ensure_not_running(interp) < 0) {
+    if (_PyInterpreterState_IsRunningMain(interp)) {
+        PyErr_Format(PyExc_RuntimeError, "interpreter running");
         return NULL;
     }
 
     // Destroy the interpreter.
-    PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
+    PyThreadState *tstate = PyThreadState_New(interp);
+    tstate->_whence = _PyThreadState_WHENCE_INTERP;
     // XXX Possible GILState issues?
     PyThreadState *save_tstate = PyThreadState_Swap(tstate);
     Py_EndInterpreter(tstate);
@@ -618,7 +345,7 @@ interp_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
 
     interp = PyInterpreterState_Head();
     while (interp != NULL) {
-        id = _PyInterpreterState_GetIDObject(interp);
+        id = PyInterpreterState_GetIDObject(interp);
         if (id == NULL) {
             Py_DECREF(ids);
             return NULL;
@@ -650,7 +377,7 @@ interp_get_current(PyObject *self, PyObject *Py_UNUSED(ignored))
     if (interp == NULL) {
         return NULL;
     }
-    return _PyInterpreterState_GetIDObject(interp);
+    return PyInterpreterState_GetIDObject(interp);
 }
 
 PyDoc_STRVAR(get_current_doc,
@@ -664,7 +391,7 @@ interp_get_main(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     // Currently, 0 is always the main interpreter.
     int64_t id = 0;
-    return _PyInterpreterID_New(id);
+    return PyInterpreterID_New(id);
 }
 
 PyDoc_STRVAR(get_main_doc,
@@ -672,50 +399,238 @@ PyDoc_STRVAR(get_main_doc,
 \n\
 Return the ID of main interpreter.");
 
+static PyUnicodeObject *
+convert_script_arg(PyObject *arg, const char *fname, const char *displayname,
+                   const char *expected)
+{
+    PyUnicodeObject *str = NULL;
+    if (PyUnicode_CheckExact(arg)) {
+        str = (PyUnicodeObject *)Py_NewRef(arg);
+    }
+    else if (PyUnicode_Check(arg)) {
+        // XXX str = PyUnicode_FromObject(arg);
+        str = (PyUnicodeObject *)Py_NewRef(arg);
+    }
+    else {
+        _PyArg_BadArgument(fname, displayname, expected, arg);
+        return NULL;
+    }
+
+    const char *err = check_code_str(str);
+    if (err != NULL) {
+        Py_DECREF(str);
+        PyErr_Format(PyExc_ValueError,
+                     "%.200s(): bad script text (%s)", fname, err);
+        return NULL;
+    }
+
+    return str;
+}
+
+static PyCodeObject *
+convert_code_arg(PyObject *arg, const char *fname, const char *displayname,
+                 const char *expected)
+{
+    const char *kind = NULL;
+    PyCodeObject *code = NULL;
+    if (PyFunction_Check(arg)) {
+        if (PyFunction_GetClosure(arg) != NULL) {
+            PyErr_Format(PyExc_ValueError,
+                         "%.200s(): closures not supported", fname);
+            return NULL;
+        }
+        code = (PyCodeObject *)PyFunction_GetCode(arg);
+        if (code == NULL) {
+            if (PyErr_Occurred()) {
+                // This chains.
+                PyErr_Format(PyExc_ValueError,
+                             "%.200s(): bad func", fname);
+            }
+            else {
+                PyErr_Format(PyExc_ValueError,
+                             "%.200s(): func.__code__ missing", fname);
+            }
+            return NULL;
+        }
+        Py_INCREF(code);
+        kind = "func";
+    }
+    else if (PyCode_Check(arg)) {
+        code = (PyCodeObject *)Py_NewRef(arg);
+        kind = "code object";
+    }
+    else {
+        _PyArg_BadArgument(fname, displayname, expected, arg);
+        return NULL;
+    }
+
+    const char *err = check_code_object(code);
+    if (err != NULL) {
+        Py_DECREF(code);
+        PyErr_Format(PyExc_ValueError,
+                     "%.200s(): bad %s (%s)", fname, kind, err);
+        return NULL;
+    }
+
+    return code;
+}
+
+static int
+_interp_exec(PyObject *self,
+             PyObject *id_arg, PyObject *code_arg, PyObject *shared_arg,
+             PyObject **p_excinfo)
+{
+    // Look up the interpreter.
+    PyInterpreterState *interp = PyInterpreterID_LookUp(id_arg);
+    if (interp == NULL) {
+        return -1;
+    }
+
+    // Extract code.
+    Py_ssize_t codestrlen = -1;
+    PyObject *bytes_obj = NULL;
+    int flags = 0;
+    const char *codestr = get_code_str(code_arg,
+                                       &codestrlen, &bytes_obj, &flags);
+    if (codestr == NULL) {
+        return -1;
+    }
+
+    // Run the code in the interpreter.
+    int res = _run_in_interpreter(interp, codestr, codestrlen,
+                                  shared_arg, flags, p_excinfo);
+    Py_XDECREF(bytes_obj);
+    if (res < 0) {
+        return -1;
+    }
+
+    return 0;
+}
 
 static PyObject *
-interp_run_string(PyObject *self, PyObject *args, PyObject *kwds)
+interp_exec(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    static char *kwlist[] = {"id", "script", "shared", NULL};
+    static char *kwlist[] = {"id", "code", "shared", NULL};
     PyObject *id, *code;
     PyObject *shared = NULL;
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
-                                     "OU|O:run_string", kwlist,
+                                     "OO|O:" MODULE_NAME ".exec", kwlist,
                                      &id, &code, &shared)) {
         return NULL;
     }
 
-    // Look up the interpreter.
-    PyInterpreterState *interp = _PyInterpreterID_LookUp(id);
-    if (interp == NULL) {
+    const char *expected = "a string, a function, or a code object";
+    if (PyUnicode_Check(code)) {
+         code = (PyObject *)convert_script_arg(code, MODULE_NAME ".exec",
+                                               "argument 2", expected);
+    }
+    else {
+         code = (PyObject *)convert_code_arg(code, MODULE_NAME ".exec",
+                                             "argument 2", expected);
+    }
+    if (code == NULL) {
         return NULL;
     }
 
-    // Extract code.
-    Py_ssize_t size;
-    const char *codestr = PyUnicode_AsUTF8AndSize(code, &size);
-    if (codestr == NULL) {
-        return NULL;
+    PyObject *excinfo = NULL;
+    int res = _interp_exec(self, id, code, shared, &excinfo);
+    Py_DECREF(code);
+    if (res < 0) {
+        assert((excinfo == NULL) != (PyErr_Occurred() == NULL));
+        return excinfo;
     }
-    if (strlen(codestr) != (size_t)size) {
-        PyErr_SetString(PyExc_ValueError,
-                        "source code string cannot contain null bytes");
+    Py_RETURN_NONE;
+}
+
+PyDoc_STRVAR(exec_doc,
+"exec(id, code, shared=None)\n\
+\n\
+Execute the provided code in the identified interpreter.\n\
+This is equivalent to running the builtin exec() under the target\n\
+interpreter, using the __dict__ of its __main__ module as both\n\
+globals and locals.\n\
+\n\
+\"code\" may be a string containing the text of a Python script.\n\
+\n\
+Functions (and code objects) are also supported, with some restrictions.\n\
+The code/function must not take any arguments or be a closure\n\
+(i.e. have cell vars).  Methods and other callables are not supported.\n\
+\n\
+If a function is provided, its code object is used and all its state\n\
+is ignored, including its __globals__ dict.");
+
+static PyObject *
+interp_run_string(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"id", "script", "shared", NULL};
+    PyObject *id, *script;
+    PyObject *shared = NULL;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "OU|O:" MODULE_NAME ".run_string", kwlist,
+                                     &id, &script, &shared)) {
         return NULL;
     }
 
-    // Run the code in the interpreter.
-    if (_run_script_in_interpreter(self, interp, codestr, shared) != 0) {
+    script = (PyObject *)convert_script_arg(script, MODULE_NAME ".exec",
+                                            "argument 2", "a string");
+    if (script == NULL) {
         return NULL;
     }
+
+    PyObject *excinfo = NULL;
+    int res = _interp_exec(self, id, script, shared, &excinfo);
+    Py_DECREF(script);
+    if (res < 0) {
+        assert((excinfo == NULL) != (PyErr_Occurred() == NULL));
+        return excinfo;
+    }
     Py_RETURN_NONE;
 }
 
 PyDoc_STRVAR(run_string_doc,
-"run_string(id, script, shared)\n\
+"run_string(id, script, shared=None)\n\
 \n\
 Execute the provided string in the identified interpreter.\n\
 \n\
-See PyRun_SimpleStrings.");
+(See " MODULE_NAME ".exec().");
+
+static PyObject *
+interp_run_func(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"id", "func", "shared", NULL};
+    PyObject *id, *func;
+    PyObject *shared = NULL;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "OO|O:" MODULE_NAME ".run_func", kwlist,
+                                     &id, &func, &shared)) {
+        return NULL;
+    }
+
+    PyCodeObject *code = convert_code_arg(func, MODULE_NAME ".exec",
+                                          "argument 2",
+                                          "a function or a code object");
+    if (code == NULL) {
+        return NULL;
+    }
+
+    PyObject *excinfo = NULL;
+    int res = _interp_exec(self, id, (PyObject *)code, shared, &excinfo);
+    Py_DECREF(code);
+    if (res < 0) {
+        assert((excinfo == NULL) != (PyErr_Occurred() == NULL));
+        return excinfo;
+    }
+    Py_RETURN_NONE;
+}
+
+PyDoc_STRVAR(run_func_doc,
+"run_func(id, func, shared=None)\n\
+\n\
+Execute the body of the provided function in the identified interpreter.\n\
+Code objects are also supported.  In both cases, closures and args\n\
+are not supported.  Methods and other callables are not supported either.\n\
+\n\
+(See " MODULE_NAME ".exec().");
 
 
 static PyObject *
@@ -752,15 +667,11 @@ interp_is_running(PyObject *self, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    PyInterpreterState *interp = _PyInterpreterID_LookUp(id);
+    PyInterpreterState *interp = PyInterpreterID_LookUp(id);
     if (interp == NULL) {
         return NULL;
     }
-    int is_running = _is_running(interp);
-    if (is_running < 0) {
-        return NULL;
-    }
-    if (is_running) {
+    if (_PyInterpreterState_IsRunningMain(interp)) {
         Py_RETURN_TRUE;
     }
     Py_RETURN_FALSE;
@@ -771,6 +682,7 @@ PyDoc_STRVAR(is_running_doc,
 \n\
 Return whether or not the identified interpreter is running.");
 
+
 static PyMethodDef module_functions[] = {
     {"create",                    _PyCFunction_CAST(interp_create),
      METH_VARARGS | METH_KEYWORDS, create_doc},
@@ -785,8 +697,12 @@ static PyMethodDef module_functions[] = {
 
     {"is_running",                _PyCFunction_CAST(interp_is_running),
      METH_VARARGS | METH_KEYWORDS, is_running_doc},
+    {"exec",                      _PyCFunction_CAST(interp_exec),
+     METH_VARARGS | METH_KEYWORDS, exec_doc},
     {"run_string",                _PyCFunction_CAST(interp_run_string),
      METH_VARARGS | METH_KEYWORDS, run_string_doc},
+    {"run_func",                  _PyCFunction_CAST(interp_run_func),
+     METH_VARARGS | METH_KEYWORDS, run_func_doc},
 
     {"is_shareable",              _PyCFunction_CAST(object_is_shareable),
      METH_VARARGS | METH_KEYWORDS, is_shareable_doc},
@@ -804,13 +720,8 @@ The 'interpreters' module provides a more convenient interface.");
 static int
 module_exec(PyObject *mod)
 {
-    /* Add exception types */
-    if (exceptions_init(mod) != 0) {
-        goto error;
-    }
-
     // PyInterpreterID
-    if (PyModule_AddType(mod, &_PyInterpreterID_Type) < 0) {
+    if (PyModule_AddType(mod, &PyInterpreterID_Type) < 0) {
         goto error;
     }
 
diff --git a/Modules/_xxtestfuzz/README.rst b/Modules/_xxtestfuzz/README.rst
index 42bd02a03cbedd..b951858458c82f 100644
--- a/Modules/_xxtestfuzz/README.rst
+++ b/Modules/_xxtestfuzz/README.rst
@@ -13,6 +13,9 @@ oss-fuzz will regularly pull from CPython, discover all the tests in
 automatically be run in oss-fuzz, while also being smoke-tested as part of
 CPython's test suite.
 
+In addition, the tests are run on GitHub Actions using CIFuzz for PRs to the
+main branch changing relevant files.
+
 Adding a new fuzz test
 ----------------------
 
diff --git a/Modules/_xxtestfuzz/_xxtestfuzz.c b/Modules/_xxtestfuzz/_xxtestfuzz.c
index e0694de6719df0..a2dbabce71ed67 100644
--- a/Modules/_xxtestfuzz/_xxtestfuzz.c
+++ b/Modules/_xxtestfuzz/_xxtestfuzz.c
@@ -1,4 +1,3 @@
-#define PY_SSIZE_T_CLEAN
 #include <Python.h>
 #include <stdlib.h>
 #include <inttypes.h>
diff --git a/Modules/_xxtestfuzz/dictionaries/fuzz_elementtree_parsewhole.dict b/Modules/_xxtestfuzz/dictionaries/fuzz_elementtree_parsewhole.dict
new file mode 100644
index 00000000000000..e1b58cdb248238
--- /dev/null
+++ b/Modules/_xxtestfuzz/dictionaries/fuzz_elementtree_parsewhole.dict
@@ -0,0 +1,134 @@
+tok_1="<"
+tok_2=">"
+tok_3="/"
+tok_4="<![CDATA["
+tok_5="]]>"
+tok_6="<?xml"
+tok_6a="?>"
+tok_7="version"
+tok_8="encoding"
+tok_9="UTF-8"
+tok_9a="UTF-16"
+tok_9b="ASCII"
+tok_9c="LATIN-1"
+tok_9d="UTF-32"
+tok_9e="UTF-7"
+tok_10="\""
+tok_11="&"
+tok_11a="&#"
+tok_11b=";"
+tok_12="'"
+tok_13="<!--"
+tok_13a="-->"
+tok_14="</"
+tok_15="="
+tok_16="&gt;"
+tok_17="&lt;"
+tok_18="&amp;"
+tok_19="&apos;"
+tok_20="&quot;"
+tok_21="&#20013;"
+tok_22="&#x4e2d;"
+tok_23="&#0;"
+tok_24="<!ENTITY"
+tok_25="SYSTEM"
+tok_26="PUBLIC"
+tok_27="NDATA"
+tok_28="["
+tok_29="]"
+tok_30="\\"
+tok_30a="\\x00"
+tok_31="0"
+tok_32="1"
+tok_33="2"
+tok_34="3"
+tok_35="4"
+tok_36="5"
+tok_37="6"
+tok_38="7"
+tok_39="8"
+tok_40="9"
+tok_41="iso8859_1"
+tok_42="latin_1"
+tok_43="us.ascii"
+tok_43a="us_ascii"
+tok_43b="ascii"
+tok_44="xml:"
+tok_45="surrogate"
+tok_46="replace"
+tok_47="strict"
+
+attr_encoding=" encoding=\"1\""
+attr_generic=" a=\"1\""
+attr_href=" href=\"1\""
+attr_standalone=" standalone=\"no\""
+attr_version=" version=\"1\""
+attr_xml_base=" xml:base=\"1\""
+attr_xml_id=" xml:id=\"1\""
+attr_xml_lang=" xml:lang=\"1\""
+attr_xml_space=" xml:space=\"1\""
+attr_xmlns=" xmlns=\"1\""
+
+entity_builtin="&lt;"
+entity_decimal="&#1;"
+entity_external="&a;"
+entity_hex="&#x1;"
+
+string_any="ANY"
+string_brackets="[]"
+string_cdata="CDATA"
+string_col_fallback=":fallback"
+string_col_generic=":a"
+string_col_include=":include"
+string_dashes="--"
+string_empty="EMPTY"
+string_empty_dblquotes="\"\""
+string_empty_quotes="''"
+string_entities="ENTITIES"
+string_entity="ENTITY"
+string_fixed="#FIXED"
+string_id="ID"
+string_idref="IDREF"
+string_idrefs="IDREFS"
+string_implied="#IMPLIED"
+string_nmtoken="NMTOKEN"
+string_nmtokens="NMTOKENS"
+string_notation="NOTATION"
+string_parentheses="()"
+string_pcdata="#PCDATA"
+string_percent="%a"
+string_public="PUBLIC"
+string_required="#REQUIRED"
+string_schema=":schema"
+string_system="SYSTEM"
+string_ucs4="UCS-4"
+string_utf16="UTF-16"
+string_utf8="UTF-8"
+string_xmlns="xmlns:"
+
+tag_attlist="<!ATTLIST"
+tag_cdata="<![CDATA["
+tag_close="</a>"
+tag_doctype="<!DOCTYPE"
+tag_element="<!ELEMENT"
+tag_entity="<!ENTITY"
+tag_ignore="<![IGNORE["
+tag_include="<![INCLUDE["
+tag_notation="<!NOTATION"
+tag_open="<a>"
+tag_open_close="<a />"
+tag_open_exclamation="<!"
+tag_open_q="<?"
+tag_sq2_close="]]>"
+tag_xml_q="<?xml?>"
+
+encoding_utf="UTF-"
+encoding_iso1="ISO-8859"
+encoding_iso3="ISO-10646-UCS"
+encoding_iso5="ISO-LATIN-1"
+encoding_jis="SHIFT_JIS"
+encoding_utf7="UTF-7"
+encoding_utf16le="UTF-16BE"
+encoding_utf16le="UTF-16LE"
+encoding_ascii="US-ASCII"
+encoding_latin1="latin1"
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nComment.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nComment.xml
new file mode 100644
index 00000000000000..e95aa302d04fdb
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nComment.xml
@@ -0,0 +1,4 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+ <c14n2:IgnoreComments>true</c14n2:IgnoreComments>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nDefault.xml
new file mode 100644
index 00000000000000..c1364142cc59bf
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nDefault.xml
@@ -0,0 +1,3 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" Algorithm="http://www.w3.org/2010/xml-c14n2">
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefix.xml
new file mode 100644
index 00000000000000..fb233b42b1334f
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefix.xml
@@ -0,0 +1,4 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+ <c14n2:PrefixRewrite>sequential</c14n2:PrefixRewrite>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefixQname.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefixQname.xml
new file mode 100644
index 00000000000000..23188eedbc2451
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefixQname.xml
@@ -0,0 +1,7 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+  <c14n2:PrefixRewrite>sequential</c14n2:PrefixRewrite>
+  <c14n2:QNameAware>
+   <c14n2:QualifiedAttr Name="type" NS="http://www.w3.org/2001/XMLSchema-instance"/>
+  </c14n2:QNameAware>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefixQnameXpathElem.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefixQnameXpathElem.xml
new file mode 100644
index 00000000000000..626fc48f410fa0
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nPrefixQnameXpathElem.xml
@@ -0,0 +1,8 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+  <c14n2:PrefixRewrite>sequential</c14n2:PrefixRewrite>
+  <c14n2:QNameAware>
+   <c14n2:Element Name="bar" NS="http://a"/>
+   <c14n2:XPathElement Name="IncludedXPath" NS="http://www.w3.org/2010/xmldsig2#"/>
+  </c14n2:QNameAware>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQname.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQname.xml
new file mode 100644
index 00000000000000..919e5903f5ce6e
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQname.xml
@@ -0,0 +1,6 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+  <c14n2:QNameAware>
+   <c14n2:QualifiedAttr Name="type" NS="http://www.w3.org/2001/XMLSchema-instance"/>
+  </c14n2:QNameAware>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQnameElem.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQnameElem.xml
new file mode 100644
index 00000000000000..0321f8061952e6
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQnameElem.xml
@@ -0,0 +1,6 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+  <c14n2:QNameAware>
+   <c14n2:Element Name="bar" NS="http://a"/>
+  </c14n2:QNameAware>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQnameXpathElem.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQnameXpathElem.xml
new file mode 100644
index 00000000000000..c4890bc8b01d5e
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nQnameXpathElem.xml
@@ -0,0 +1,7 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+  <c14n2:QNameAware>
+   <c14n2:Element Name="bar" NS="http://a"/>
+   <c14n2:XPathElement Name="IncludedXPath" NS="http://www.w3.org/2010/xmldsig2#"/>
+  </c14n2:QNameAware>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nTrim.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nTrim.xml
new file mode 100644
index 00000000000000..ccb9cf65db7235
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/c14nTrim.xml
@@ -0,0 +1,4 @@
+<dsig:CanonicalizationMethod xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:c14n2="http://www.w3.org/2010/xml-c14n2" Algorithm="http://www.w3.org/2010/xml-c14n2">
+ <c14n2:TrimTextNodes>true</c14n2:TrimTextNodes>
+</dsig:CanonicalizationMethod>
+
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/expat224_utf8_bug.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/expat224_utf8_bug.xml
new file mode 100644
index 00000000000000..d66a8e6b50f93b
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/expat224_utf8_bug.xml
@@ -0,0 +1,2 @@
+<a b='01234567890123456�人�雪抽幽�骋�辞竞险韵�得一编奇�辄擅美当时�声�代是以北门之风�山之雅�园之简黄�之赋至今为作家称述尚矣�至洛阳之�剡溪之兴�桥之�亦皆传为故事钱塘沈履德先生�居西湖两峰间孤高贞�与雪�调方大雪满天皴肤粟背之际先生乃鹿中豹舄端居闭门或扶童曳���六桥三竺时��人诗讽�之��宋元诸�家集��诗得二百四�章�络通穿如出一人如呵一气气立于言表格备于篇中略无掇拾补凑之形�胸次包罗壮阔笔底驱走�谢欧�诸公�能为此世称王�公为集�擅长观其在钟山对雪仅题数篇未�有此噫嘻奇矣哉亦富矣哉予慕先生有�安之节愧�能为慧�之立乃�新集命工传写使海内�好者知先生为��传述之士而一新世人之耳目他日必有慕潜德�幽光而剞劂以传者余实为之执殳矣
+弘治戊�仲冬望日慈溪��器衵于海虞官��毕诗部' />
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N1.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N1.xml
new file mode 100644
index 00000000000000..ed450c7341d382
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N1.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+
+<?xml-stylesheet   href="doc.xsl"
+   type="text/xsl"   ?>
+
+<!DOCTYPE doc SYSTEM "doc.dtd">
+
+<doc>Hello, world!<!-- Comment 1 --></doc>
+
+<?pi-without-data     ?>
+
+<!-- Comment 2 -->
+
+<!-- Comment 3 -->
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N2.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N2.xml
new file mode 100644
index 00000000000000..74eeea147c3791
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N2.xml
@@ -0,0 +1,11 @@
+<doc>
+   <clean>   </clean>
+   <dirty>   A   B   </dirty>
+   <mixed>
+      A
+      <clean>   </clean>
+      B
+      <dirty>   A   B   </dirty>
+      C
+   </mixed>
+</doc>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N3.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N3.xml
new file mode 100644
index 00000000000000..fea78213f1ae69
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N3.xml
@@ -0,0 +1,18 @@
+<!DOCTYPE doc [<!ATTLIST e9 attr CDATA "default">]>
+<doc>
+   <e1   />
+   <e2   ></e2>
+   <e3   name = "elem3"   id="elem3"   />
+   <e4   name="elem4"   id="elem4"   ></e4>
+   <e5 a:attr="out" b:attr="sorted" attr2="all" attr="I'm"
+      xmlns:b="http://www.ietf.org"
+      xmlns:a="http://www.w3.org"
+      xmlns="http://example.org"/>
+   <e6 xmlns="" xmlns:a="http://www.w3.org">
+      <e7 xmlns="http://www.ietf.org">
+         <e8 xmlns="" xmlns:a="http://www.w3.org">
+            <e9 xmlns="" xmlns:a="http://www.ietf.org"/>
+         </e8>
+      </e7>
+   </e6>
+</doc> 
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N4.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N4.xml
new file mode 100644
index 00000000000000..909a847435b86c
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N4.xml
@@ -0,0 +1,13 @@
+<!DOCTYPE doc [
+<!ATTLIST normId id ID #IMPLIED>
+<!ATTLIST normNames attr NMTOKENS #IMPLIED>
+]>
+<doc>
+   <text>First line&#x0d;&#10;Second line</text>
+   <value>&#x32;</value>
+   <compute><![CDATA[value>"0" && value<"10" ?"valid":"error"]]></compute>
+   <compute expr='value>"0" &amp;&amp; value&lt;"10" ?"valid":"error"'>valid</compute>
+   <norm attr=' &apos;   &#x20;&#13;&#xa;&#9;   &apos; '/>
+   <normNames attr='   A   &#x20;&#13;&#xa;&#9;   B   '/>
+   <normId id=' &apos;&#x20;&#13;&#xa;&#9; &apos; '/>
+</doc>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N5.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N5.xml
new file mode 100644
index 00000000000000..501161bad5187f
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N5.xml
@@ -0,0 +1,12 @@
+<!DOCTYPE doc [
+<!ATTLIST doc attrExtEnt CDATA #IMPLIED>
+<!ENTITY ent1 "Hello">
+<!ENTITY ent2 SYSTEM "world.txt">
+<!ENTITY entExt SYSTEM "earth.gif" NDATA gif>
+<!NOTATION gif SYSTEM "viewgif.exe">
+]>
+<doc attrExtEnt="entExt">
+   &ent1;, &ent2;!
+</doc>
+
+<!-- Let world.txt contain "world" (excluding the quotes) -->
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N6.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N6.xml
new file mode 100644
index 00000000000000..31e2071867257c
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inC14N6.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<doc>&#169;</doc>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsContent.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsContent.xml
new file mode 100644
index 00000000000000..b9924660ba6da3
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsContent.xml
@@ -0,0 +1,4 @@
+<a:foo xmlns:a="http://a" xmlns:b="http://b" xmlns:child="http://c" xmlns:soap-env="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+ <a:bar>xsd:string</a:bar>
+ <dsig2:IncludedXPath xmlns:dsig2="http://www.w3.org/2010/xmldsig2#">/soap-env:body/child::b:foo[@att1 != "c:val" and @att2 != 'xsd:string']</dsig2:IncludedXPath>
+</a:foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsDefault.xml
new file mode 100644
index 00000000000000..3e0d323bad27c2
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsDefault.xml
@@ -0,0 +1,3 @@
+<foo xmlns:a="http://a" xmlns:b="http://b">
+ <b:bar b:att1="val" att2="val"/>
+</foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsPushdown.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsPushdown.xml
new file mode 100644
index 00000000000000..daa67d83f15914
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsPushdown.xml
@@ -0,0 +1,6 @@
+<a:foo xmlns:a="http://a" xmlns:b="http://b" xmlns:c="http://c">
+ <b:bar/>
+ <b:bar/>
+ <b:bar/>
+ <a:bar b:att1="val"/>
+</a:foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsRedecl.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsRedecl.xml
new file mode 100644
index 00000000000000..10bd97beda3baa
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsRedecl.xml
@@ -0,0 +1,3 @@
+<foo xmlns:a="http://z3" xmlns:b="http://z2" a:att1="val1" b:att2="val2"> 
+ <bar xmlns="http://z0" xmlns:a="http://z2" a:att1="val1" b:att2="val2" xmlns:b="http://z3" />
+</foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsSort.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsSort.xml
new file mode 100644
index 00000000000000..8e9fc01c647b24
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsSort.xml
@@ -0,0 +1,4 @@
+<a:foo xmlns:a="http://z3" xmlns:b="http://z2" b:att1="val1" c:att3="val3" b:att2="val2" xmlns:c="http://z1" xmlns:d="http://z0">
+ <c:bar/>
+ <c:bar d:att3="val3"/>
+</a:foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsSuperfluous.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsSuperfluous.xml
new file mode 100644
index 00000000000000..f77720f7b0b09d
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsSuperfluous.xml
@@ -0,0 +1,4 @@
+<foo xmlns:a="http://z0" xmlns:b="http://z0" a:att1="val1" b:att2="val2" xmlns="http://z0"> 
+ <c:bar xmlns:a="http://z0" xmlns:c="http://z0" c:att3="val3"/>
+ <d:bar xmlns:d="http://z0"/>
+</foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsXml.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsXml.xml
new file mode 100644
index 00000000000000..7520cf3fb9eb28
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/inNsXml.xml
@@ -0,0 +1,3 @@
+<foo xmlns="http://z0" xml:id="23">
+  <bar xsi:type="xsd:string" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">data</bar>
+</foo>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N1_c14nComment.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N1_c14nComment.xml
new file mode 100644
index 00000000000000..d98d16840c6bcc
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N1_c14nComment.xml
@@ -0,0 +1,6 @@
+<?xml-stylesheet href="doc.xsl"
+   type="text/xsl"   ?>
+<doc>Hello, world!<!-- Comment 1 --></doc>
+<?pi-without-data?>
+<!-- Comment 2 -->
+<!-- Comment 3 -->
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N1_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N1_c14nDefault.xml
new file mode 100644
index 00000000000000..af9a9770578e9d
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N1_c14nDefault.xml
@@ -0,0 +1,4 @@
+<?xml-stylesheet href="doc.xsl"
+   type="text/xsl"   ?>
+<doc>Hello, world!</doc>
+<?pi-without-data?>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N2_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N2_c14nDefault.xml
new file mode 100644
index 00000000000000..2afa15ccb36382
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N2_c14nDefault.xml
@@ -0,0 +1,11 @@
+<doc>
+   <clean>   </clean>
+   <dirty>   A   B   </dirty>
+   <mixed>
+      A
+      <clean>   </clean>
+      B
+      <dirty>   A   B   </dirty>
+      C
+   </mixed>
+</doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N2_c14nTrim.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N2_c14nTrim.xml
new file mode 100644
index 00000000000000..7a1dc32946bce3
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N2_c14nTrim.xml
@@ -0,0 +1 @@
+<doc><clean></clean><dirty>A   B</dirty><mixed>A<clean></clean>B<dirty>A   B</dirty>C</mixed></doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nDefault.xml
new file mode 100644
index 00000000000000..662e108aa8a1e4
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nDefault.xml
@@ -0,0 +1,14 @@
+<doc>
+   <e1></e1>
+   <e2></e2>
+   <e3 id="elem3" name="elem3"></e3>
+   <e4 id="elem4" name="elem4"></e4>
+   <e5 xmlns="http://example.org" xmlns:a="http://www.w3.org" xmlns:b="http://www.ietf.org" attr="I'm" attr2="all" b:attr="sorted" a:attr="out"></e5>
+   <e6>
+      <e7 xmlns="http://www.ietf.org">
+         <e8 xmlns="">
+            <e9 attr="default"></e9>
+         </e8>
+      </e7>
+   </e6>
+</doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nPrefix.xml
new file mode 100644
index 00000000000000..041e1ec8ebe59a
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nPrefix.xml
@@ -0,0 +1,14 @@
+<n0:doc xmlns:n0="">
+   <n0:e1></n0:e1>
+   <n0:e2></n0:e2>
+   <n0:e3 id="elem3" name="elem3"></n0:e3>
+   <n0:e4 id="elem4" name="elem4"></n0:e4>
+   <n1:e5 xmlns:n1="http://example.org" xmlns:n2="http://www.ietf.org" xmlns:n3="http://www.w3.org" attr="I'm" attr2="all" n2:attr="sorted" n3:attr="out"></n1:e5>
+   <n0:e6>
+      <n2:e7 xmlns:n2="http://www.ietf.org">
+         <n0:e8>
+            <n0:e9 attr="default"></n0:e9>
+         </n0:e8>
+      </n2:e7>
+   </n0:e6>
+</n0:doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nTrim.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nTrim.xml
new file mode 100644
index 00000000000000..4f35ad9662df3b
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N3_c14nTrim.xml
@@ -0,0 +1 @@
+<doc><e1></e1><e2></e2><e3 id="elem3" name="elem3"></e3><e4 id="elem4" name="elem4"></e4><e5 xmlns="http://example.org" xmlns:a="http://www.w3.org" xmlns:b="http://www.ietf.org" attr="I'm" attr2="all" b:attr="sorted" a:attr="out"></e5><e6><e7 xmlns="http://www.ietf.org"><e8 xmlns=""><e9 attr="default"></e9></e8></e7></e6></doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N4_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N4_c14nDefault.xml
new file mode 100644
index 00000000000000..243d0e61f2e94f
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N4_c14nDefault.xml
@@ -0,0 +1,10 @@
+<doc>
+   <text>First line&#xD;
+Second line</text>
+   <value>2</value>
+   <compute>value&gt;"0" &amp;&amp; value&lt;"10" ?"valid":"error"</compute>
+   <compute expr="value>&quot;0&quot; &amp;&amp; value&lt;&quot;10&quot; ?&quot;valid&quot;:&quot;error&quot;">valid</compute>
+   <norm attr=" '    &#xD;&#xA;&#x9;   ' "></norm>
+   <normNames attr="A &#xD;&#xA;&#x9; B"></normNames>
+   <normId id="' &#xD;&#xA;&#x9; '"></normId>
+</doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N4_c14nTrim.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N4_c14nTrim.xml
new file mode 100644
index 00000000000000..24d83ba8ab0012
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N4_c14nTrim.xml
@@ -0,0 +1,2 @@
+<doc><text>First line&#xD;
+Second line</text><value>2</value><compute>value&gt;"0" &amp;&amp; value&lt;"10" ?"valid":"error"</compute><compute expr="value>&quot;0&quot; &amp;&amp; value&lt;&quot;10&quot; ?&quot;valid&quot;:&quot;error&quot;">valid</compute><norm attr=" '    &#xD;&#xA;&#x9;   ' "></norm><normNames attr="A &#xD;&#xA;&#x9; B"></normNames><normId id="' &#xD;&#xA;&#x9; '"></normId></doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N5_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N5_c14nDefault.xml
new file mode 100644
index 00000000000000..c232e740aee4a7
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N5_c14nDefault.xml
@@ -0,0 +1,3 @@
+<doc attrExtEnt="entExt">
+   Hello, world!
+</doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N5_c14nTrim.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N5_c14nTrim.xml
new file mode 100644
index 00000000000000..3fa84b1e986014
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N5_c14nTrim.xml
@@ -0,0 +1 @@
+<doc attrExtEnt="entExt">Hello, world!</doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N6_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N6_c14nDefault.xml
new file mode 100644
index 00000000000000..0be38f98cb1398
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inC14N6_c14nDefault.xml
@@ -0,0 +1 @@
+<doc>©</doc>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nDefault.xml
new file mode 100644
index 00000000000000..62d7e004a44034
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nDefault.xml
@@ -0,0 +1,4 @@
+<a:foo xmlns:a="http://a">
+ <a:bar>xsd:string</a:bar>
+ <dsig2:IncludedXPath xmlns:dsig2="http://www.w3.org/2010/xmldsig2#">/soap-env:body/child::b:foo[@att1 != "c:val" and @att2 != 'xsd:string']</dsig2:IncludedXPath>
+</a:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nPrefixQnameXpathElem.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nPrefixQnameXpathElem.xml
new file mode 100644
index 00000000000000..20e1c2e9d6dfb4
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nPrefixQnameXpathElem.xml
@@ -0,0 +1,4 @@
+<n0:foo xmlns:n0="http://a">
+ <n0:bar xmlns:n1="http://www.w3.org/2001/XMLSchema">n1:string</n0:bar>
+ <n4:IncludedXPath xmlns:n2="http://b" xmlns:n3="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:n4="http://www.w3.org/2010/xmldsig2#">/n3:body/child::n2:foo[@att1 != "c:val" and @att2 != 'xsd:string']</n4:IncludedXPath>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nQnameElem.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nQnameElem.xml
new file mode 100644
index 00000000000000..db8680daa033d7
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nQnameElem.xml
@@ -0,0 +1,4 @@
+<a:foo xmlns:a="http://a">
+ <a:bar xmlns:xsd="http://www.w3.org/2001/XMLSchema">xsd:string</a:bar>
+ <dsig2:IncludedXPath xmlns:dsig2="http://www.w3.org/2010/xmldsig2#">/soap-env:body/child::b:foo[@att1 != "c:val" and @att2 != 'xsd:string']</dsig2:IncludedXPath>
+</a:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nQnameXpathElem.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nQnameXpathElem.xml
new file mode 100644
index 00000000000000..df3b21579fac5e
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsContent_c14nQnameXpathElem.xml
@@ -0,0 +1,4 @@
+<a:foo xmlns:a="http://a">
+ <a:bar xmlns:xsd="http://www.w3.org/2001/XMLSchema">xsd:string</a:bar>
+ <dsig2:IncludedXPath xmlns:b="http://b" xmlns:dsig2="http://www.w3.org/2010/xmldsig2#" xmlns:soap-env="http://schemas.xmlsoap.org/wsdl/soap/">/soap-env:body/child::b:foo[@att1 != "c:val" and @att2 != 'xsd:string']</dsig2:IncludedXPath>
+</a:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsDefault_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsDefault_c14nDefault.xml
new file mode 100644
index 00000000000000..674b076dd6d9a6
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsDefault_c14nDefault.xml
@@ -0,0 +1,3 @@
+<foo>
+ <b:bar xmlns:b="http://b" att2="val" b:att1="val"></b:bar>
+</foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsDefault_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsDefault_c14nPrefix.xml
new file mode 100644
index 00000000000000..83edaae91e7423
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsDefault_c14nPrefix.xml
@@ -0,0 +1,3 @@
+<n0:foo xmlns:n0="">
+ <n1:bar xmlns:n1="http://b" att2="val" n1:att1="val"></n1:bar>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsPushdown_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsPushdown_c14nDefault.xml
new file mode 100644
index 00000000000000..fa4f21b5d0af55
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsPushdown_c14nDefault.xml
@@ -0,0 +1,6 @@
+<a:foo xmlns:a="http://a">
+ <b:bar xmlns:b="http://b"></b:bar>
+ <b:bar xmlns:b="http://b"></b:bar>
+ <b:bar xmlns:b="http://b"></b:bar>
+ <a:bar xmlns:b="http://b" b:att1="val"></a:bar>
+</a:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsPushdown_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsPushdown_c14nPrefix.xml
new file mode 100644
index 00000000000000..6d579200c9dc8c
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsPushdown_c14nPrefix.xml
@@ -0,0 +1,6 @@
+<n0:foo xmlns:n0="http://a">
+ <n1:bar xmlns:n1="http://b"></n1:bar>
+ <n1:bar xmlns:n1="http://b"></n1:bar>
+ <n1:bar xmlns:n1="http://b"></n1:bar>
+ <n0:bar xmlns:n1="http://b" n1:att1="val"></n0:bar>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsRedecl_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsRedecl_c14nDefault.xml
new file mode 100644
index 00000000000000..ba37f925103c70
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsRedecl_c14nDefault.xml
@@ -0,0 +1,3 @@
+<foo xmlns:a="http://z3" xmlns:b="http://z2" b:att2="val2" a:att1="val1"> 
+ <bar xmlns="http://z0" xmlns:a="http://z2" xmlns:b="http://z3" a:att1="val1" b:att2="val2"></bar>
+</foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsRedecl_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsRedecl_c14nPrefix.xml
new file mode 100644
index 00000000000000..af3bb2d6f062cd
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsRedecl_c14nPrefix.xml
@@ -0,0 +1,3 @@
+<n0:foo xmlns:n0="" xmlns:n1="http://z2" xmlns:n2="http://z3" n1:att2="val2" n2:att1="val1"> 
+ <n3:bar xmlns:n3="http://z0" n1:att1="val1" n2:att2="val2"></n3:bar>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSort_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSort_c14nDefault.xml
new file mode 100644
index 00000000000000..8a92c5c61c2c2c
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSort_c14nDefault.xml
@@ -0,0 +1,4 @@
+<a:foo xmlns:a="http://z3" xmlns:b="http://z2" xmlns:c="http://z1" c:att3="val3" b:att1="val1" b:att2="val2">
+ <c:bar></c:bar>
+ <c:bar xmlns:d="http://z0" d:att3="val3"></c:bar>
+</a:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSort_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSort_c14nPrefix.xml
new file mode 100644
index 00000000000000..8d44c84fe5d307
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSort_c14nPrefix.xml
@@ -0,0 +1,4 @@
+<n2:foo xmlns:n0="http://z1" xmlns:n1="http://z2" xmlns:n2="http://z3" n0:att3="val3" n1:att1="val1" n1:att2="val2">
+ <n0:bar></n0:bar>
+ <n0:bar xmlns:n3="http://z0" n3:att3="val3"></n0:bar>
+</n2:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSuperfluous_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSuperfluous_c14nDefault.xml
new file mode 100644
index 00000000000000..6bb862d763d737
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSuperfluous_c14nDefault.xml
@@ -0,0 +1,4 @@
+<foo xmlns="http://z0" xmlns:a="http://z0" xmlns:b="http://z0" a:att1="val1" b:att2="val2"> 
+ <c:bar xmlns:c="http://z0" c:att3="val3"></c:bar>
+ <d:bar xmlns:d="http://z0"></d:bar>
+</foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSuperfluous_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSuperfluous_c14nPrefix.xml
new file mode 100644
index 00000000000000..700a16d42a7746
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsSuperfluous_c14nPrefix.xml
@@ -0,0 +1,4 @@
+<n0:foo xmlns:n0="http://z0" n0:att1="val1" n0:att2="val2"> 
+ <n0:bar n0:att3="val3"></n0:bar>
+ <n0:bar></n0:bar>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nDefault.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nDefault.xml
new file mode 100644
index 00000000000000..1689f3bf423dc5
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nDefault.xml
@@ -0,0 +1,3 @@
+<foo xmlns="http://z0" xml:id="23">
+  <bar xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xsd:string">data</bar>
+</foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nPrefix.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nPrefix.xml
new file mode 100644
index 00000000000000..38508a47f6b904
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nPrefix.xml
@@ -0,0 +1,3 @@
+<n0:foo xmlns:n0="http://z0" xml:id="23">
+  <n0:bar xmlns:n1="http://www.w3.org/2001/XMLSchema-instance" n1:type="xsd:string">data</n0:bar>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nPrefixQname.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nPrefixQname.xml
new file mode 100644
index 00000000000000..867980f82bfa59
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nPrefixQname.xml
@@ -0,0 +1,3 @@
+<n0:foo xmlns:n0="http://z0" xml:id="23">
+  <n0:bar xmlns:n1="http://www.w3.org/2001/XMLSchema" xmlns:n2="http://www.w3.org/2001/XMLSchema-instance" n2:type="n1:string">data</n0:bar>
+</n0:foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nQname.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nQname.xml
new file mode 100644
index 00000000000000..0300f9d562db30
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/out_inNsXml_c14nQname.xml
@@ -0,0 +1,3 @@
+<foo xmlns="http://z0" xml:id="23">
+  <bar xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xsd:string">data</bar>
+</foo>
\ No newline at end of file
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/simple-ns.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/simple-ns.xml
new file mode 100644
index 00000000000000..f1f34b2e29c73e
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/simple-ns.xml
@@ -0,0 +1,7 @@
+<?pi data?>
+<!-- comment -->
+<root xmlns='namespace'>
+   <element key='value'>text</element>
+   <element>text</element>tail
+   <empty-element/>
+</root>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/simple.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/simple.xml
new file mode 100644
index 00000000000000..b88c2c7e69a088
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/simple.xml
@@ -0,0 +1,6 @@
+<!-- comment -->
+<root>
+   <element key='value'>text</element>
+   <element>text</element>tail
+   <empty-element/>
+</root>
diff --git a/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/test.xml b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/test.xml
new file mode 100644
index 00000000000000..92136da76d3581
--- /dev/null
+++ b/Modules/_xxtestfuzz/fuzz_elementtree_parsewhole_corpus/test.xml
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<HTML xmlns:pp="http://www.isogen.com/paul/post-processor">
+<TITLE>Introduction to XSL</TITLE>
+<H1>Introduction to XSL</H1>
+	
+
+	
+		<HR/>
+		<H2>Overview
+</H2>
+		<UL>
+		
+	<LI>1.Intro</LI>
+
+	<LI>2.History</LI>
+
+	<LI>3.XSL Basics</LI>
+
+	<LI>Lunch</LI>
+
+	<LI>4.An XML Data Model</LI>
+
+	<LI>5.XSL Patterns</LI>
+
+	<LI>6.XSL Templates</LI>
+
+	<LI>7.XSL Formatting Model
+</LI>
+
+		</UL>
+	
+
+
+	
+
+	
+		<HR/>
+		<H2>Intro</H2>
+		<UL>
+		
+	<LI>Who am I?</LI>
+
+	<LI>Who are you?</LI>
+
+	<LI>Why are we here?
+</LI>
+
+		</UL>
+	
+
+
+	
+
+	
+		<HR/>
+		<H2>History: XML and SGML</H2>
+		<UL>
+		
+	<LI>XML is a subset of SGML.</LI>
+
+	<LI>SGML allows the separation of abstract content from formatting.</LI>
+
+	<LI>Also one of XML's primary virtues (in the doc publishing domain).
+</LI>
+
+		</UL>
+	
+
+
+	
+
+	
+		<HR/>
+		<H2>History: What are stylesheets?</H2>
+		<UL>
+		
+	<LI>Stylesheets specify the formatting of SGML/XML documents.</LI>
+
+	<LI>Stylesheets put the &quot;style&quot; back into documents.</LI>
+
+	<LI>New York Times content+NYT Stylesheet = NYT paper
+</LI>
+
+		</UL>
+	
+
+
+	
+
+	
+		<HR/>
+		<H2>History: FOSI</H2>
+		<UL>
+		
+	<LI>FOSI: &quot;Formatted Output Specification Instance&quot;
+<UL>
+	<LI>MIL-STD-28001
+	</LI>
+
+	<LI>FOSI's are SGML documents
+	</LI>
+
+	<LI>A stylesheet for another document
+	</LI>
+</UL></LI>
+
+	<LI>Obsolete but implemented...
+</LI>
+
+		</UL>
+	
+
+µ
+	
+</HTML>
diff --git a/Modules/_xxtestfuzz/fuzz_tests.txt b/Modules/_xxtestfuzz/fuzz_tests.txt
index 4e046ecf6d898c..40aa22110e7d27 100644
--- a/Modules/_xxtestfuzz/fuzz_tests.txt
+++ b/Modules/_xxtestfuzz/fuzz_tests.txt
@@ -7,3 +7,4 @@ fuzz_sre_match
 fuzz_csv_reader
 fuzz_struct_unpack
 fuzz_ast_literal_eval
+fuzz_elementtree_parsewhole
diff --git a/Modules/_xxtestfuzz/fuzzer.c b/Modules/_xxtestfuzz/fuzzer.c
index 37d402824853f0..77d29ce773a04b 100644
--- a/Modules/_xxtestfuzz/fuzzer.c
+++ b/Modules/_xxtestfuzz/fuzzer.c
@@ -10,7 +10,12 @@
 
   See the source code for LLVMFuzzerTestOneInput for details. */
 
+#ifndef Py_BUILD_CORE
+#  define Py_BUILD_CORE 1
+#endif
+
 #include <Python.h>
+#include "pycore_pyhash.h"        // _Py_HashBytes()
 #include <stdlib.h>
 #include <inttypes.h>
 
@@ -188,37 +193,33 @@ static int fuzz_json_loads(const char* data, size_t size) {
 
 #define MAX_RE_TEST_SIZE 0x10000
 
-PyObject* sre_compile_method = NULL;
-PyObject* sre_error_exception = NULL;
-int SRE_FLAG_DEBUG = 0;
+PyObject* re_compile_method = NULL;
+PyObject* re_error_exception = NULL;
+int RE_FLAG_DEBUG = 0;
 /* Called by LLVMFuzzerTestOneInput for initialization */
 static int init_sre_compile(void) {
     /* Import sre_compile.compile and sre.error */
-    PyObject* sre_compile_module = PyImport_ImportModule("sre_compile");
-    if (sre_compile_module == NULL) {
+    PyObject* re_module = PyImport_ImportModule("re");
+    if (re_module == NULL) {
         return 0;
     }
-    sre_compile_method = PyObject_GetAttrString(sre_compile_module, "compile");
-    if (sre_compile_method == NULL) {
+    re_compile_method = PyObject_GetAttrString(re_module, "compile");
+    if (re_compile_method == NULL) {
         return 0;
     }
 
-    PyObject* sre_constants = PyImport_ImportModule("sre_constants");
-    if (sre_constants == NULL) {
+    re_error_exception = PyObject_GetAttrString(re_module, "error");
+    if (re_error_exception == NULL) {
         return 0;
     }
-    sre_error_exception = PyObject_GetAttrString(sre_constants, "error");
-    if (sre_error_exception == NULL) {
-        return 0;
-    }
-    PyObject* debug_flag = PyObject_GetAttrString(sre_constants, "SRE_FLAG_DEBUG");
+    PyObject* debug_flag = PyObject_GetAttrString(re_module, "DEBUG");
     if (debug_flag == NULL) {
         return 0;
     }
-    SRE_FLAG_DEBUG = PyLong_AsLong(debug_flag);
+    RE_FLAG_DEBUG = PyLong_AsLong(debug_flag);
     return 1;
 }
-/* Fuzz _sre.compile(x) */
+/* Fuzz re.compile(x) */
 static int fuzz_sre_compile(const char* data, size_t size) {
     /* Ignore really long regex patterns that will timeout the fuzzer */
     if (size > MAX_RE_TEST_SIZE) {
@@ -231,7 +232,7 @@ static int fuzz_sre_compile(const char* data, size_t size) {
     uint16_t flags = ((uint16_t*) data)[0];
     /* We remove the SRE_FLAG_DEBUG if present. This is because it
        prints to stdout which greatly decreases fuzzing speed */
-    flags &= ~SRE_FLAG_DEBUG;
+    flags &= ~RE_FLAG_DEBUG;
 
     /* Pull the pattern from the remaining bytes */
     PyObject* pattern_bytes = PyBytes_FromStringAndSize(data + 2, size - 2);
@@ -244,9 +245,9 @@ static int fuzz_sre_compile(const char* data, size_t size) {
         return 0;
     }
 
-    /* compiled = _sre.compile(data[2:], data[0:2] */
+    /* compiled = re.compile(data[2:], data[0:2] */
     PyObject* compiled = PyObject_CallFunctionObjArgs(
-        sre_compile_method, pattern_bytes, flags_obj, NULL);
+        re_compile_method, pattern_bytes, flags_obj, NULL);
     /* Ignore ValueError as the fuzzer will more than likely
        generate some invalid combination of flags */
     if (compiled == NULL && PyErr_ExceptionMatches(PyExc_ValueError)) {
@@ -262,7 +263,7 @@ static int fuzz_sre_compile(const char* data, size_t size) {
         PyErr_Clear();
     }
     /* Ignore re.error */
-    if (compiled == NULL && PyErr_ExceptionMatches(sre_error_exception)) {
+    if (compiled == NULL && PyErr_ExceptionMatches(re_error_exception)) {
         PyErr_Clear();
     }
 
@@ -438,6 +439,68 @@ static int fuzz_ast_literal_eval(const char* data, size_t size) {
     return 0;
 }
 
+#define MAX_ELEMENTTREE_PARSEWHOLE_TEST_SIZE 0x100000
+PyObject* xmlparser_type = NULL;
+PyObject* bytesio_type = NULL;
+/* Called by LLVMFuzzerTestOneInput for initialization */
+static int init_elementtree_parsewhole(void) {
+    PyObject* elementtree_module = PyImport_ImportModule("_elementtree");
+    if (elementtree_module == NULL) {
+        return 0;
+    }
+    xmlparser_type = PyObject_GetAttrString(elementtree_module, "XMLParser");
+    Py_DECREF(elementtree_module);
+    if (xmlparser_type == NULL) {
+        return 0;
+    }
+
+
+    PyObject* io_module = PyImport_ImportModule("io");
+    if (io_module == NULL) {
+        return 0;
+    }
+    bytesio_type = PyObject_GetAttrString(io_module, "BytesIO");
+    Py_DECREF(io_module);
+    if (bytesio_type == NULL) {
+        return 0;
+    }
+
+    return 1;
+}
+/* Fuzz _elementtree.XMLParser._parse_whole(x) */
+static int fuzz_elementtree_parsewhole(const char* data, size_t size) {
+    if (size > MAX_ELEMENTTREE_PARSEWHOLE_TEST_SIZE) {
+        return 0;
+    }
+
+    PyObject *input = PyObject_CallFunction(bytesio_type, "y#", data, (Py_ssize_t)size);
+    if (input == NULL) {
+        assert(PyErr_Occurred());
+        PyErr_Print();
+        abort();
+    }
+
+    PyObject *xmlparser_instance = PyObject_CallObject(xmlparser_type, NULL);
+    if (xmlparser_instance == NULL) {
+        assert(PyErr_Occurred());
+        PyErr_Print();
+        abort();
+    }
+
+    PyObject *result = PyObject_CallMethod(xmlparser_instance, "_parse_whole", "O", input);
+    if (result == NULL) {
+        /* Ignore exception here, which can be caused by invalid XML input */
+        PyErr_Clear();
+    } else {
+        Py_DECREF(result);
+    }
+
+    Py_DECREF(xmlparser_instance);
+    Py_DECREF(input);
+
+    return 0;
+}
+
 /* Run fuzzer and abort on failure. */
 static int _run_fuzz(const uint8_t *data, size_t size, int(*fuzzer)(const char* , size_t)) {
     int rv = fuzzer((const char*) data, size);
@@ -526,13 +589,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 #if !defined(_Py_FUZZ_ONE) || defined(_Py_FUZZ_fuzz_sre_compile)
     static int SRE_COMPILE_INITIALIZED = 0;
     if (!SRE_COMPILE_INITIALIZED && !init_sre_compile()) {
-        if (!PyErr_ExceptionMatches(PyExc_DeprecationWarning)) {
-            PyErr_Print();
-            abort();
-        }
-        else {
-            PyErr_Clear();
-        }
+        PyErr_Print();
+        abort();
     } else {
         SRE_COMPILE_INITIALIZED = 1;
     }
@@ -573,6 +631,17 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     }
 
     rv |= _run_fuzz(data, size, fuzz_ast_literal_eval);
+#endif
+#if !defined(_Py_FUZZ_ONE) || defined(_Py_FUZZ_fuzz_elementtree_parsewhole)
+    static int ELEMENTTREE_PARSEWHOLE_INITIALIZED = 0;
+    if (!ELEMENTTREE_PARSEWHOLE_INITIALIZED && !init_elementtree_parsewhole()) {
+        PyErr_Print();
+        abort();
+    } else {
+        ELEMENTTREE_PARSEWHOLE_INITIALIZED = 1;
+    }
+
+    rv |= _run_fuzz(data, size, fuzz_elementtree_parsewhole);
 #endif
   return rv;
 }
diff --git a/Modules/_zoneinfo.c b/Modules/_zoneinfo.c
index c8c791b6d7c0d8..77644c3155bc33 100644
--- a/Modules/_zoneinfo.c
+++ b/Modules/_zoneinfo.c
@@ -4,13 +4,12 @@
 
 #include "Python.h"
 #include "pycore_long.h"          // _PyLong_GetOne()
-#include "structmember.h"
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
 
-#include <ctype.h>
-#include <stddef.h>
-#include <stdint.h>
+#include "datetime.h"             // PyDateTime_TZInfo
 
-#include "datetime.h"
+#include <stddef.h>               // offsetof()
+#include <stdint.h>
 
 #include "clinic/_zoneinfo.c.h"
 /*[clinic input]
@@ -62,21 +61,21 @@ struct TransitionRuleType {
 
 typedef struct {
     TransitionRuleType base;
-    uint8_t month;
-    uint8_t week;
-    uint8_t day;
-    int8_t hour;
-    int8_t minute;
-    int8_t second;
+    uint8_t month;      /* 1 - 12 */
+    uint8_t week;       /* 1 - 5 */
+    uint8_t day;        /* 0 - 6 */
+    int16_t hour;       /* -167 - 167, RFC 8536 §3.3.1 */
+    int8_t minute;      /* signed 2 digits */
+    int8_t second;      /* signed 2 digits */
 } CalendarRule;
 
 typedef struct {
     TransitionRuleType base;
-    uint8_t julian;
-    unsigned int day;
-    int8_t hour;
-    int8_t minute;
-    int8_t second;
+    uint8_t julian;     /* 0, 1 */
+    uint16_t day;       /* 0 - 365 */
+    int16_t hour;       /* -167 - 167, RFC 8536 §3.3.1 */
+    int8_t minute;      /* signed 2 digits */
+    int8_t second;      /* signed 2 digits */
 } DayRule;
 
 struct StrongCacheNode {
@@ -134,15 +133,14 @@ ts_to_local(size_t *trans_idx, int64_t *trans_utc, long *utcoff,
 static int
 parse_tz_str(zoneinfo_state *state, PyObject *tz_str_obj, _tzrule *out);
 
-static Py_ssize_t
-parse_abbr(const char *const p, PyObject **abbr);
-static Py_ssize_t
-parse_tz_delta(const char *const p, long *total_seconds);
-static Py_ssize_t
-parse_transition_time(const char *const p, int8_t *hour, int8_t *minute,
-                      int8_t *second);
-static Py_ssize_t
-parse_transition_rule(const char *const p, TransitionRuleType **out);
+static int
+parse_abbr(const char **p, PyObject **abbr);
+static int
+parse_tz_delta(const char **p, long *total_seconds);
+static int
+parse_transition_time(const char **p, int *hour, int *minute, int *second);
+static int
+parse_transition_rule(const char **p, TransitionRuleType **out);
 
 static _ttinfo *
 find_tzrule_ttinfo(_tzrule *rule, int64_t ts, unsigned char fold, int year);
@@ -422,7 +420,7 @@ zoneinfo_ZoneInfo_from_file_impl(PyTypeObject *type, PyTypeObject *cls,
         return NULL;
     }
 
-    file_repr = PyUnicode_FromFormat("%R", file_obj);
+    file_repr = PyObject_Repr(file_obj);
     if (file_repr == NULL) {
         goto error;
     }
@@ -694,14 +692,19 @@ zoneinfo_fromutc(PyObject *obj_self, PyObject *dt)
         }
         else {
             PyObject *replace = PyObject_GetAttrString(tmp, "replace");
+            Py_DECREF(tmp);
+            if (replace == NULL) {
+                return NULL;
+            }
             PyObject *args = PyTuple_New(0);
+            if (args == NULL) {
+                Py_DECREF(replace);
+                return NULL;
+            }
             PyObject *kwargs = PyDict_New();
-
-            Py_DECREF(tmp);
-            if (args == NULL || kwargs == NULL || replace == NULL) {
-                Py_XDECREF(args);
-                Py_XDECREF(kwargs);
-                Py_XDECREF(replace);
+            if (kwargs == NULL) {
+                Py_DECREF(replace);
+                Py_DECREF(args);
                 return NULL;
             }
 
@@ -813,7 +816,7 @@ zoneinfo_ZoneInfo__unpickle_impl(PyTypeObject *type, PyTypeObject *cls,
 /*[clinic end generated code: output=556712fc709deecb input=6ac8c73eed3de316]*/
 {
     if (from_cache) {
-        PyObject *val_args = Py_BuildValue("(O)", key);
+        PyObject *val_args = PyTuple_Pack(1, key);
         if (val_args == NULL) {
             return NULL;
         }
@@ -1323,14 +1326,14 @@ calendarrule_year_to_timestamp(TransitionRuleType *base_self, int year)
     }
 
     int64_t ordinal = ymd_to_ord(year, self->month, month_day) - EPOCHORDINAL;
-    return ((ordinal * 86400) + (int64_t)(self->hour * 3600) +
-            (int64_t)(self->minute * 60) + (int64_t)(self->second));
+    return ordinal * 86400 + (int64_t)self->hour * 3600 +
+            (int64_t)self->minute * 60 + self->second;
 }
 
 /* Constructor for CalendarRule. */
 int
-calendarrule_new(uint8_t month, uint8_t week, uint8_t day, int8_t hour,
-                 int8_t minute, int8_t second, CalendarRule *out)
+calendarrule_new(int month, int week, int day, int hour,
+                 int minute, int second, CalendarRule *out)
 {
     // These bounds come from the POSIX standard, which describes an Mm.n.d
     // rule as:
@@ -1339,33 +1342,36 @@ calendarrule_new(uint8_t month, uint8_t week, uint8_t day, int8_t hour,
     //   5, 1 <= m <= 12, where week 5 means "the last d day in month m" which
     //   may occur in either the fourth or the fifth week). Week 1 is the first
     //   week in which the d'th day occurs. Day zero is Sunday.
-    if (month <= 0 || month > 12) {
-        PyErr_Format(PyExc_ValueError, "Month must be in (0, 12]");
+    if (month < 1 || month > 12) {
+        PyErr_Format(PyExc_ValueError, "Month must be in [1, 12]");
         return -1;
     }
 
-    if (week <= 0 || week > 5) {
-        PyErr_Format(PyExc_ValueError, "Week must be in (0, 5]");
+    if (week < 1 || week > 5) {
+        PyErr_Format(PyExc_ValueError, "Week must be in [1, 5]");
         return -1;
     }
 
-    // If the 'day' parameter type is changed to a signed type,
-    // "day < 0" check must be added.
-    if (/* day < 0 || */ day > 6) {
+    if (day < 0 || day > 6) {
         PyErr_Format(PyExc_ValueError, "Day must be in [0, 6]");
         return -1;
     }
 
+    if (hour < -167 || hour > 167) {
+        PyErr_Format(PyExc_ValueError, "Hour must be in [0, 167]");
+        return -1;
+    }
+
     TransitionRuleType base = {&calendarrule_year_to_timestamp};
 
     CalendarRule new_offset = {
         .base = base,
-        .month = month,
-        .week = week,
-        .day = day,
-        .hour = hour,
-        .minute = minute,
-        .second = second,
+        .month = (uint8_t)month,
+        .week = (uint8_t)week,
+        .day = (uint8_t)day,
+        .hour = (int16_t)hour,
+        .minute = (int8_t)minute,
+        .second = (int8_t)second,
     };
 
     *out = new_offset;
@@ -1405,40 +1411,45 @@ dayrule_year_to_timestamp(TransitionRuleType *base_self, int year)
     // always transitions on a given calendar day (other than February 29th),
     // you would use a Julian day, e.g. J91 always refers to April 1st and J365
     // always refers to December 31st.
-    unsigned int day = self->day;
+    uint16_t day = self->day;
     if (self->julian && day >= 59 && is_leap_year(year)) {
         day += 1;
     }
 
-    return ((days_before_year + day) * 86400) + (self->hour * 3600) +
-           (self->minute * 60) + self->second;
+    return (days_before_year + day) * 86400 + (int64_t)self->hour * 3600 +
+           (int64_t)self->minute * 60 + self->second;
 }
 
 /* Constructor for DayRule. */
 static int
-dayrule_new(uint8_t julian, unsigned int day, int8_t hour, int8_t minute,
-            int8_t second, DayRule *out)
+dayrule_new(int julian, int day, int hour, int minute,
+            int second, DayRule *out)
 {
     // The POSIX standard specifies that Julian days must be in the range (1 <=
     // n <= 365) and that non-Julian (they call it "0-based Julian") days must
     // be in the range (0 <= n <= 365).
     if (day < julian || day > 365) {
-        PyErr_Format(PyExc_ValueError, "day must be in [%u, 365], not: %u",
+        PyErr_Format(PyExc_ValueError, "day must be in [%d, 365], not: %d",
                      julian, day);
         return -1;
     }
 
+    if (hour < -167 || hour > 167) {
+        PyErr_Format(PyExc_ValueError, "Hour must be in [0, 167]");
+        return -1;
+    }
+
     TransitionRuleType base = {
         &dayrule_year_to_timestamp,
     };
 
     DayRule tmp = {
         .base = base,
-        .julian = julian,
-        .day = day,
-        .hour = hour,
-        .minute = minute,
-        .second = second,
+        .julian = (uint8_t)julian,
+        .day = (int16_t)day,
+        .hour = (int16_t)hour,
+        .minute = (int8_t)minute,
+        .second = (int8_t)second,
     };
 
     *out = tmp;
@@ -1595,21 +1606,18 @@ parse_tz_str(zoneinfo_state *state, PyObject *tz_str_obj, _tzrule *out)
     const char *p = tz_str;
 
     // Read the `std` abbreviation, which must be at least 3 characters long.
-    Py_ssize_t num_chars = parse_abbr(p, &std_abbr);
-    if (num_chars < 1) {
-        PyErr_Format(PyExc_ValueError, "Invalid STD format in %R", tz_str_obj);
+    if (parse_abbr(&p, &std_abbr)) {
+        if (!PyErr_Occurred()) {
+            PyErr_Format(PyExc_ValueError, "Invalid STD format in %R", tz_str_obj);
+        }
         goto error;
     }
 
-    p += num_chars;
-
     // Now read the STD offset, which is required
-    num_chars = parse_tz_delta(p, &std_offset);
-    if (num_chars < 0) {
+    if (parse_tz_delta(&p, &std_offset)) {
         PyErr_Format(PyExc_ValueError, "Invalid STD offset in %R", tz_str_obj);
         goto error;
     }
-    p += num_chars;
 
     // If the string ends here, there is no DST, otherwise we must parse the
     // DST abbreviation and start and end dates and times.
@@ -1617,12 +1625,12 @@ parse_tz_str(zoneinfo_state *state, PyObject *tz_str_obj, _tzrule *out)
         goto complete;
     }
 
-    num_chars = parse_abbr(p, &dst_abbr);
-    if (num_chars < 1) {
-        PyErr_Format(PyExc_ValueError, "Invalid DST format in %R", tz_str_obj);
+    if (parse_abbr(&p, &dst_abbr)) {
+        if (!PyErr_Occurred()) {
+            PyErr_Format(PyExc_ValueError, "Invalid DST format in %R", tz_str_obj);
+        }
         goto error;
     }
-    p += num_chars;
 
     if (*p == ',') {
         // From the POSIX standard:
@@ -1632,14 +1640,11 @@ parse_tz_str(zoneinfo_state *state, PyObject *tz_str_obj, _tzrule *out)
         dst_offset = std_offset + 3600;
     }
     else {
-        num_chars = parse_tz_delta(p, &dst_offset);
-        if (num_chars < 0) {
+        if (parse_tz_delta(&p, &dst_offset)) {
             PyErr_Format(PyExc_ValueError, "Invalid DST offset in %R",
                          tz_str_obj);
             goto error;
         }
-
-        p += num_chars;
     }
 
     TransitionRuleType **transitions[2] = {&start, &end};
@@ -1652,14 +1657,12 @@ parse_tz_str(zoneinfo_state *state, PyObject *tz_str_obj, _tzrule *out)
         }
         p++;
 
-        num_chars = parse_transition_rule(p, transitions[i]);
-        if (num_chars < 0) {
+        if (parse_transition_rule(&p, transitions[i])) {
             PyErr_Format(PyExc_ValueError,
                          "Malformed transition rule in TZ string: %R",
                          tz_str_obj);
             goto error;
         }
-        p += num_chars;
     }
 
     if (*p != '\0') {
@@ -1694,21 +1697,25 @@ parse_tz_str(zoneinfo_state *state, PyObject *tz_str_obj, _tzrule *out)
 }
 
 static int
-parse_uint(const char *const p, uint8_t *value)
+parse_digits(const char **p, int min, int max, int *value)
 {
-    if (!isdigit(*p)) {
-        return -1;
+    assert(max <= 3);
+    *value = 0;
+    for (int i = 0; i < max; i++, (*p)++) {
+        if (!Py_ISDIGIT(**p)) {
+            return (i < min) ? -1 : 0;
+        }
+        *value *= 10;
+        *value += (**p) - '0';
     }
-
-    *value = (*p) - '0';
     return 0;
 }
 
 /* Parse the STD and DST abbreviations from a TZ string. */
-static Py_ssize_t
-parse_abbr(const char *const p, PyObject **abbr)
+static int
+parse_abbr(const char **p, PyObject **abbr)
 {
-    const char *ptr = p;
+    const char *ptr = *p;
     const char *str_start;
     const char *str_end;
 
@@ -1727,7 +1734,7 @@ parse_abbr(const char *const p, PyObject **abbr)
             //   '+' ) character, or the minus-sign ( '-' ) character. The std
             //   and dst fields in this case shall not include the quoting
             //   characters.
-            if (!isalpha(buff) && !isdigit(buff) && buff != '+' &&
+            if (!Py_ISALPHA(buff) && !Py_ISDIGIT(buff) && buff != '+' &&
                 buff != '-') {
                 return -1;
             }
@@ -1737,16 +1744,19 @@ parse_abbr(const char *const p, PyObject **abbr)
         ptr++;
     }
     else {
-        str_start = p;
+        str_start = ptr;
         // From the POSIX standard:
         //
         //   In the unquoted form, all characters in these fields shall be
         //   alphabetic characters from the portable character set in the
         //   current locale.
-        while (isalpha(*ptr)) {
+        while (Py_ISALPHA(*ptr)) {
             ptr++;
         }
         str_end = ptr;
+        if (str_end == str_start) {
+            return -1;
+        }
     }
 
     *abbr = PyUnicode_FromStringAndSize(str_start, str_end - str_start);
@@ -1754,12 +1764,13 @@ parse_abbr(const char *const p, PyObject **abbr)
         return -1;
     }
 
-    return ptr - p;
+    *p = ptr;
+    return 0;
 }
 
 /* Parse a UTC offset from a TZ str. */
-static Py_ssize_t
-parse_tz_delta(const char *const p, long *total_seconds)
+static int
+parse_tz_delta(const char **p, long *total_seconds)
 {
     // From the POSIX spec:
     //
@@ -1774,75 +1785,30 @@ parse_tz_delta(const char *const p, long *total_seconds)
     // The POSIX spec says that the values for `hour` must be between 0 and 24
     // hours, but RFC 8536 §3.3.1 specifies that the hours part of the
     // transition times may be signed and range from -167 to 167.
-    long sign = -1;
-    long hours = 0;
-    long minutes = 0;
-    long seconds = 0;
-
-    const char *ptr = p;
-    char buff = *ptr;
-    if (buff == '-' || buff == '+') {
-        // Negative numbers correspond to *positive* offsets, from the spec:
-        //
-        //   If preceded by a '-', the timezone shall be east of the Prime
-        //   Meridian; otherwise, it shall be west (which may be indicated by
-        //   an optional preceding '+' ).
-        if (buff == '-') {
-            sign = 1;
-        }
+    int hours = 0;
+    int minutes = 0;
+    int seconds = 0;
 
-        ptr++;
-    }
-
-    // The hour can be 1 or 2 numeric characters
-    for (size_t i = 0; i < 2; ++i) {
-        buff = *ptr;
-        if (!isdigit(buff)) {
-            if (i == 0) {
-                return -1;
-            }
-            else {
-                break;
-            }
-        }
-
-        hours *= 10;
-        hours += buff - '0';
-        ptr++;
-    }
-
-    if (hours > 24 || hours < 0) {
+    if (parse_transition_time(p, &hours, &minutes, &seconds)) {
         return -1;
     }
 
-    // Minutes and seconds always of the format ":dd"
-    long *outputs[2] = {&minutes, &seconds};
-    for (size_t i = 0; i < 2; ++i) {
-        if (*ptr != ':') {
-            goto complete;
-        }
-        ptr++;
-
-        for (size_t j = 0; j < 2; ++j) {
-            buff = *ptr;
-            if (!isdigit(buff)) {
-                return -1;
-            }
-            *(outputs[i]) *= 10;
-            *(outputs[i]) += buff - '0';
-            ptr++;
-        }
+    if (hours > 24 || hours < -24) {
+        return -1;
     }
 
-complete:
-    *total_seconds = sign * ((hours * 3600) + (minutes * 60) + seconds);
-
-    return ptr - p;
+    // Negative numbers correspond to *positive* offsets, from the spec:
+    //
+    //   If preceded by a '-', the timezone shall be east of the Prime
+    //   Meridian; otherwise, it shall be west (which may be indicated by
+    //   an optional preceding '+' ).
+    *total_seconds = -((hours * 3600L) + (minutes * 60) + seconds);
+    return 0;
 }
 
 /* Parse the date portion of a transition rule. */
-static Py_ssize_t
-parse_transition_rule(const char *const p, TransitionRuleType **out)
+static int
+parse_transition_rule(const char **p, TransitionRuleType **out)
 {
     // The full transition rule indicates when to change back and forth between
     // STD and DST, and has the form:
@@ -1854,10 +1820,10 @@ parse_transition_rule(const char *const p, TransitionRuleType **out)
     // does not include the ',' at the end of the first rule.
     //
     // The POSIX spec states that if *time* is not given, the default is 02:00.
-    const char *ptr = p;
-    int8_t hour = 2;
-    int8_t minute = 0;
-    int8_t second = 0;
+    const char *ptr = *p;
+    int hour = 2;
+    int minute = 0;
+    int second = 0;
 
     // Rules come in one of three flavors:
     //
@@ -1866,44 +1832,30 @@ parse_transition_rule(const char *const p, TransitionRuleType **out)
     //   3. Mm.n.d: Specifying by month, week and day-of-week.
 
     if (*ptr == 'M') {
-        uint8_t month, week, day;
+        int month, week, day;
         ptr++;
-        if (parse_uint(ptr, &month)) {
+
+        if (parse_digits(&ptr, 1, 2, &month)) {
             return -1;
         }
-        ptr++;
-        if (*ptr != '.') {
-            uint8_t tmp;
-            if (parse_uint(ptr, &tmp)) {
-                return -1;
-            }
-
-            month *= 10;
-            month += tmp;
-            ptr++;
+        if (*ptr++ != '.') {
+            return -1;
         }
-
-        uint8_t *values[2] = {&week, &day};
-        for (size_t i = 0; i < 2; ++i) {
-            if (*ptr != '.') {
-                return -1;
-            }
-            ptr++;
-
-            if (parse_uint(ptr, values[i])) {
-                return -1;
-            }
-            ptr++;
+        if (parse_digits(&ptr, 1, 1, &week)) {
+            return -1;
+        }
+        if (*ptr++ != '.') {
+            return -1;
+        }
+        if (parse_digits(&ptr, 1, 1, &day)) {
+            return -1;
         }
 
         if (*ptr == '/') {
             ptr++;
-            Py_ssize_t num_chars =
-                parse_transition_time(ptr, &hour, &minute, &second);
-            if (num_chars < 0) {
+            if (parse_transition_time(&ptr, &hour, &minute, &second)) {
                 return -1;
             }
-            ptr += num_chars;
         }
 
         CalendarRule *rv = PyMem_Calloc(1, sizeof(CalendarRule));
@@ -1919,33 +1871,22 @@ parse_transition_rule(const char *const p, TransitionRuleType **out)
         *out = (TransitionRuleType *)rv;
     }
     else {
-        uint8_t julian = 0;
-        unsigned int day = 0;
+        int julian = 0;
+        int day = 0;
         if (*ptr == 'J') {
             julian = 1;
             ptr++;
         }
 
-        for (size_t i = 0; i < 3; ++i) {
-            if (!isdigit(*ptr)) {
-                if (i == 0) {
-                    return -1;
-                }
-                break;
-            }
-            day *= 10;
-            day += (*ptr) - '0';
-            ptr++;
+        if (parse_digits(&ptr, 1, 3, &day)) {
+            return -1;
         }
 
         if (*ptr == '/') {
             ptr++;
-            Py_ssize_t num_chars =
-                parse_transition_time(ptr, &hour, &minute, &second);
-            if (num_chars < 0) {
+            if (parse_transition_time(&ptr, &hour, &minute, &second)) {
                 return -1;
             }
-            ptr += num_chars;
         }
 
         DayRule *rv = PyMem_Calloc(1, sizeof(DayRule));
@@ -1960,13 +1901,13 @@ parse_transition_rule(const char *const p, TransitionRuleType **out)
         *out = (TransitionRuleType *)rv;
     }
 
-    return ptr - p;
+    *p = ptr;
+    return 0;
 }
 
 /* Parse the time portion of a transition rule (e.g. following an /) */
-static Py_ssize_t
-parse_transition_time(const char *const p, int8_t *hour, int8_t *minute,
-                      int8_t *second)
+static int
+parse_transition_time(const char **p, int *hour, int *minute, int *second)
 {
     // From the spec:
     //
@@ -1978,12 +1919,9 @@ parse_transition_time(const char *const p, int8_t *hour, int8_t *minute,
     //   h[h][:mm[:ss]]
     //
     // RFC 8536 also allows transition times to be signed and to range from
-    // -167 to +167, but the current version only supports [0, 99].
-    //
-    // TODO: Support the full range of transition hours.
-    int8_t *components[3] = {hour, minute, second};
-    const char *ptr = p;
-    int8_t sign = 1;
+    // -167 to +167.
+    const char *ptr = *p;
+    int sign = 1;
 
     if (*ptr == '-' || *ptr == '+') {
         if (*ptr == '-') {
@@ -1992,32 +1930,31 @@ parse_transition_time(const char *const p, int8_t *hour, int8_t *minute,
         ptr++;
     }
 
-    for (size_t i = 0; i < 3; ++i) {
-        if (i > 0) {
-            if (*ptr != ':') {
-                break;
-            }
-            ptr++;
+    // The hour can be 1 to 3 numeric characters
+    if (parse_digits(&ptr, 1, 3, hour)) {
+        return -1;
+    }
+    *hour *= sign;
+
+    // Minutes and seconds always of the format ":dd"
+    if (*ptr == ':') {
+        ptr++;
+        if (parse_digits(&ptr, 2, 2, minute)) {
+            return -1;
         }
+        *minute *= sign;
 
-        uint8_t buff = 0;
-        for (size_t j = 0; j < 2; j++) {
-            if (!isdigit(*ptr)) {
-                if (i == 0 && j > 0) {
-                    break;
-                }
+        if (*ptr == ':') {
+            ptr++;
+            if (parse_digits(&ptr, 2, 2, second)) {
                 return -1;
             }
-
-            buff *= 10;
-            buff += (*ptr) - '0';
-            ptr++;
+            *second *= sign;
         }
-
-        *(components[i]) = sign * buff;
     }
 
-    return ptr - p;
+    *p = ptr;
+    return 0;
 }
 
 /* Constructor for a _tzrule.
@@ -2372,8 +2309,8 @@ get_local_timestamp(PyObject *dt, int64_t *local_ts)
         }
     }
 
-    *local_ts = (int64_t)(ord - EPOCHORDINAL) * 86400 +
-                (int64_t)(hour * 3600 + minute * 60 + second);
+    *local_ts = (int64_t)(ord - EPOCHORDINAL) * 86400L +
+                (int64_t)(hour * 3600L + minute * 60 + second);
 
     return 0;
 }
@@ -2381,7 +2318,12 @@ get_local_timestamp(PyObject *dt, int64_t *local_ts)
 /////
 // Functions for cache handling
 
-/* Constructor for StrongCacheNode */
+/* Constructor for StrongCacheNode
+ *
+ * This function doesn't set MemoryError if PyMem_Malloc fails,
+ * as the cache intentionally doesn't propagate exceptions
+ * and fails silently if error occurs.
+ */
 static StrongCacheNode *
 strong_cache_node_new(PyObject *key, PyObject *zone)
 {
@@ -2572,6 +2514,9 @@ update_strong_cache(zoneinfo_state *state, const PyTypeObject *const type,
     }
 
     StrongCacheNode *new_node = strong_cache_node_new(key, zone);
+    if (new_node == NULL) {
+        return;
+    }
     StrongCacheNode **root = &(state->ZONEINFO_STRONG_CACHE);
     move_strong_cache_node_to_front(state, root, new_node);
 
@@ -2679,13 +2624,13 @@ static PyMethodDef zoneinfo_methods[] = {
 static PyMemberDef zoneinfo_members[] = {
     {.name = "key",
      .offset = offsetof(PyZoneInfo_ZoneInfo, key),
-     .type = T_OBJECT_EX,
-     .flags = READONLY,
+     .type = Py_T_OBJECT_EX,
+     .flags = Py_READONLY,
      .doc = NULL},
     {.name = "__weaklistoffset__",
      .offset = offsetof(PyZoneInfo_ZoneInfo, weakreflist),
-     .type = T_PYSSIZET,
-     .flags = READONLY},
+     .type = Py_T_PYSSIZET,
+     .flags = Py_READONLY},
     {NULL}, /* Sentinel */
 };
 
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index f94bbec8e0bb3c..b97ade6126fa08 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -7,12 +7,15 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
-#include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_bytesobject.h"   // _PyBytes_Repeat
-#include "structmember.h"         // PyMemberDef
+#include "pycore_call.h"          // _PyObject_CallMethod()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
+#include "pycore_moduleobject.h"  // _PyModule_GetState()
+
 #include <stddef.h>               // offsetof()
+#include <stdbool.h>
 
 /*[clinic input]
 module array
@@ -279,6 +282,31 @@ u_setitem(arrayobject *ap, Py_ssize_t i, PyObject *v)
     return 0;
 }
 
+static PyObject *
+w_getitem(arrayobject *ap, Py_ssize_t i)
+{
+    return PyUnicode_FromOrdinal(((Py_UCS4 *) ap->ob_item)[i]);
+}
+
+static int
+w_setitem(arrayobject *ap, Py_ssize_t i, PyObject *v)
+{
+    PyObject *u;
+    if (!PyArg_Parse(v, "U;array item must be unicode character", &u)) {
+        return -1;
+    }
+
+    if (PyUnicode_GetLength(u) != 1) {
+        PyErr_SetString(PyExc_TypeError,
+                        "array item must be unicode character");
+        return -1;
+    }
+
+    if (i >= 0) {
+        ((Py_UCS4 *)ap->ob_item)[i] = PyUnicode_READ_CHAR(u, 0);
+    }
+    return 0;
+}
 
 static PyObject *
 h_getitem(arrayobject *ap, Py_ssize_t i)
@@ -543,6 +571,7 @@ d_setitem(arrayobject *ap, Py_ssize_t i, PyObject *v)
 DEFINE_COMPAREITEMS(b, signed char)
 DEFINE_COMPAREITEMS(BB, unsigned char)
 DEFINE_COMPAREITEMS(u, wchar_t)
+DEFINE_COMPAREITEMS(w, Py_UCS4)
 DEFINE_COMPAREITEMS(h, short)
 DEFINE_COMPAREITEMS(HH, unsigned short)
 DEFINE_COMPAREITEMS(i, int)
@@ -561,6 +590,7 @@ static const struct arraydescr descriptors[] = {
     {'b', 1, b_getitem, b_setitem, b_compareitems, "b", 1, 1},
     {'B', 1, BB_getitem, BB_setitem, BB_compareitems, "B", 1, 0},
     {'u', sizeof(wchar_t), u_getitem, u_setitem, u_compareitems, "u", 0, 0},
+    {'w', sizeof(Py_UCS4), w_getitem, w_setitem, w_compareitems, "w", 0, 0,},
     {'h', sizeof(short), h_getitem, h_setitem, h_compareitems, "h", 1, 1},
     {'H', sizeof(short), HH_getitem, HH_setitem, HH_compareitems, "H", 1, 0},
     {'i', sizeof(int), i_getitem, i_setitem, i_compareitems, "i", 1, 1},
@@ -739,10 +769,12 @@ array_richcompare(PyObject *v, PyObject *w, int op)
     k = 1;
     for (i = 0; i < Py_SIZE(va) && i < Py_SIZE(wa); i++) {
         vi = getarrayitem(v, i);
+        if (vi == NULL) {
+            return NULL;
+        }
         wi = getarrayitem(w, i);
-        if (vi == NULL || wi == NULL) {
-            Py_XDECREF(vi);
-            Py_XDECREF(wi);
+        if (wi == NULL) {
+            Py_DECREF(vi);
             return NULL;
         }
         k = PyObject_RichCompareBool(vi, wi, Py_EQ);
@@ -1716,25 +1748,46 @@ static PyObject *
 array_array_fromunicode_impl(arrayobject *self, PyObject *ustr)
 /*[clinic end generated code: output=24359f5e001a7f2b input=025db1fdade7a4ce]*/
 {
-    if (self->ob_descr->typecode != 'u') {
+    int typecode = self->ob_descr->typecode;
+    if (typecode != 'u' && typecode != 'w') {
         PyErr_SetString(PyExc_ValueError,
             "fromunicode() may only be called on "
-            "unicode type arrays");
+            "unicode type arrays ('u' or 'w')");
         return NULL;
     }
 
-    Py_ssize_t ustr_length = PyUnicode_AsWideChar(ustr, NULL, 0);
-    assert(ustr_length > 0);
-    if (ustr_length > 1) {
-        ustr_length--; /* trim trailing NUL character */
+    if (typecode == 'u') {
+        Py_ssize_t ustr_length = PyUnicode_AsWideChar(ustr, NULL, 0);
+        assert(ustr_length > 0);
+        if (ustr_length > 1) {
+            ustr_length--; /* trim trailing NUL character */
+            Py_ssize_t old_size = Py_SIZE(self);
+            if (array_resize(self, old_size + ustr_length) == -1) {
+                return NULL;
+            }
+
+            // must not fail
+            PyUnicode_AsWideChar(
+                ustr, ((wchar_t *)self->ob_item) + old_size, ustr_length);
+        }
+    }
+    else { // typecode == 'w'
+        Py_ssize_t ustr_length = PyUnicode_GetLength(ustr);
         Py_ssize_t old_size = Py_SIZE(self);
-        if (array_resize(self, old_size + ustr_length) == -1) {
+        Py_ssize_t new_size = old_size + ustr_length;
+
+        if (new_size < 0 || (size_t)new_size > PY_SSIZE_T_MAX / sizeof(Py_UCS4)) {
+            return PyErr_NoMemory();
+        }
+        if (array_resize(self, new_size) == -1) {
             return NULL;
         }
 
         // must not fail
-        PyUnicode_AsWideChar(
-            ustr, ((wchar_t *)self->ob_item) + old_size, ustr_length);
+        Py_UCS4 *u = PyUnicode_AsUCS4(ustr, ((Py_UCS4*)self->ob_item) + old_size,
+                                      ustr_length, 0);
+        assert(u != NULL);
+        (void)u; // Suppress unused_variable warning.
     }
 
     Py_RETURN_NONE;
@@ -1754,12 +1807,20 @@ static PyObject *
 array_array_tounicode_impl(arrayobject *self)
 /*[clinic end generated code: output=08e442378336e1ef input=127242eebe70b66d]*/
 {
-    if (self->ob_descr->typecode != 'u') {
+    int typecode = self->ob_descr->typecode;
+    if (typecode != 'u' && typecode != 'w') {
         PyErr_SetString(PyExc_ValueError,
-             "tounicode() may only be called on unicode type arrays");
+             "tounicode() may only be called on unicode type arrays ('u' or 'w')");
         return NULL;
     }
-    return PyUnicode_FromWideChar((wchar_t *) self->ob_item, Py_SIZE(self));
+    if (typecode == 'u') {
+        return PyUnicode_FromWideChar((wchar_t *) self->ob_item, Py_SIZE(self));
+    }
+    else { // typecode == 'w'
+        int byteorder = 0; // native byteorder
+        return PyUnicode_DecodeUTF32((const char *) self->ob_item, Py_SIZE(self) * 4,
+                                     NULL, &byteorder);
+    }
 }
 
 /*[clinic input]
@@ -1830,14 +1891,17 @@ typecode_to_mformat_code(char typecode)
         return UNSIGNED_INT8;
 
     case 'u':
-        if (sizeof(Py_UNICODE) == 2) {
+        if (sizeof(wchar_t) == 2) {
             return UTF16_LE + is_big_endian;
         }
-        if (sizeof(Py_UNICODE) == 4) {
+        if (sizeof(wchar_t) == 4) {
             return UTF32_LE + is_big_endian;
         }
         return UNKNOWN_FORMAT;
 
+    case 'w':
+        return UTF32_LE + is_big_endian;
+
     case 'f':
         if (sizeof(float) == 4) {
             const float y = 16711938.0;
@@ -2206,7 +2270,7 @@ array_array___reduce_ex___impl(arrayobject *self, PyTypeObject *cls,
     if (protocol == -1 && PyErr_Occurred())
         return NULL;
 
-    if (_PyObject_LookupAttr((PyObject *)self, state->str___dict__, &dict) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *)self, state->str___dict__, &dict) < 0) {
         return NULL;
     }
     if (dict == NULL) {
@@ -2314,7 +2378,7 @@ array_repr(arrayobject *a)
         return PyUnicode_FromFormat("%s('%c')",
                                     _PyType_Name(Py_TYPE(a)), (int)typecode);
     }
-    if (typecode == 'u') {
+    if (typecode == 'u' || typecode == 'w') {
         v = array_array_tounicode_impl(a);
     } else {
         v = array_array_tolist_impl(a);
@@ -2619,17 +2683,30 @@ array_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    if (initial && c != 'u') {
+    if (c == 'u') {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                         "The 'u' type code is deprecated and "
+                         "will be removed in Python 3.16",
+                         1)) {
+            return NULL;
+        }
+    }
+
+    bool is_unicode = c == 'u' || c == 'w';
+
+    if (initial && !is_unicode) {
         if (PyUnicode_Check(initial)) {
             PyErr_Format(PyExc_TypeError, "cannot use a str to initialize "
                          "an array with typecode '%c'", c);
             return NULL;
         }
-        else if (array_Check(initial, state) &&
-                 ((arrayobject*)initial)->ob_descr->typecode == 'u') {
-            PyErr_Format(PyExc_TypeError, "cannot use a unicode array to "
-                         "initialize an array with typecode '%c'", c);
-            return NULL;
+        else if (array_Check(initial, state)) {
+            int ic = ((arrayobject*)initial)->ob_descr->typecode;
+            if (ic == 'u' || ic == 'w') {
+                PyErr_Format(PyExc_TypeError, "cannot use a unicode array to "
+                            "initialize an array with typecode '%c'", c);
+                return NULL;
+            }
         }
     }
 
@@ -2637,7 +2714,7 @@ array_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
           || PyByteArray_Check(initial)
           || PyBytes_Check(initial)
           || PyTuple_Check(initial)
-          || ((c=='u') && PyUnicode_Check(initial))
+          || (is_unicode && PyUnicode_Check(initial))
           || (array_Check(initial, state)
               && c == ((arrayobject*)initial)->ob_descr->typecode))) {
         it = PyObject_GetIter(initial);
@@ -2697,14 +2774,31 @@ array_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
                 Py_DECREF(v);
             }
             else if (initial != NULL && PyUnicode_Check(initial))  {
-                Py_ssize_t n;
-                wchar_t *ustr = PyUnicode_AsWideCharString(initial, &n);
-                if (ustr == NULL) {
-                    Py_DECREF(a);
-                    return NULL;
+                if (c == 'u') {
+                    Py_ssize_t n;
+                    wchar_t *ustr = PyUnicode_AsWideCharString(initial, &n);
+                    if (ustr == NULL) {
+                        Py_DECREF(a);
+                        return NULL;
+                    }
+
+                    if (n > 0) {
+                        arrayobject *self = (arrayobject *)a;
+                        // self->ob_item may be NULL but it is safe.
+                        PyMem_Free(self->ob_item);
+                        self->ob_item = (char *)ustr;
+                        Py_SET_SIZE(self, n);
+                        self->allocated = n;
+                    }
                 }
+                else { // c == 'w'
+                    Py_ssize_t n = PyUnicode_GET_LENGTH(initial);
+                    Py_UCS4 *ustr = PyUnicode_AsUCS4Copy(initial);
+                    if (ustr == NULL) {
+                        Py_DECREF(a);
+                        return NULL;
+                    }
 
-                if (n > 0) {
                     arrayobject *self = (arrayobject *)a;
                     // self->ob_item may be NULL but it is safe.
                     PyMem_Free(self->ob_item);
@@ -2803,7 +2897,7 @@ itemsize -- the length in bytes of one array item\n\
 static PyObject *array_iter(arrayobject *ao);
 
 static struct PyMemberDef array_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(arrayobject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(arrayobject, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -3071,9 +3165,8 @@ array_modexec(PyObject *m)
     CREATE_TYPE(m, state->ArrayIterType, &arrayiter_spec);
     Py_SET_TYPE(state->ArrayIterType, &PyType_Type);
 
-    if (PyModule_AddObject(m, "ArrayType",
-                           Py_NewRef((PyObject *)state->ArrayType)) < 0) {
-        Py_DECREF((PyObject *)state->ArrayType);
+    if (PyModule_AddObjectRef(m, "ArrayType",
+                              (PyObject *)state->ArrayType) < 0) {
         return -1;
     }
 
@@ -3101,8 +3194,7 @@ array_modexec(PyObject *m)
         *p++ = (char)descr->typecode;
     }
     typecodes = PyUnicode_DecodeASCII(buffer, p - buffer, NULL);
-    if (PyModule_AddObject(m, "typecodes", typecodes) < 0) {
-        Py_XDECREF(typecodes);
+    if (PyModule_Add(m, "typecodes", typecodes) < 0) {
         return -1;
     }
 
diff --git a/Modules/atexitmodule.c b/Modules/atexitmodule.c
index 5882d405636400..b6f1bcbca67916 100644
--- a/Modules/atexitmodule.c
+++ b/Modules/atexitmodule.c
@@ -7,7 +7,7 @@
  */
 
 #include "Python.h"
-#include "pycore_atexit.h"
+#include "pycore_atexit.h"        // export _Py_AtExit()
 #include "pycore_initconfig.h"    // _PyStatus_NO_MEMORY
 #include "pycore_interp.h"        // PyInterpreterState.atexit
 #include "pycore_pystate.h"       // _PyInterpreterState_GET
@@ -24,8 +24,8 @@ get_atexit_state(void)
 
 
 int
-_Py_AtExit(PyInterpreterState *interp,
-           atexit_datacallbackfunc func, void *data)
+PyUnstable_AtExit(PyInterpreterState *interp,
+                  atexit_datacallbackfunc func, void *data)
 {
     assert(interp == _PyInterpreterState_GET());
     atexit_callback *callback = PyMem_Malloc(sizeof(atexit_callback));
@@ -136,7 +136,8 @@ atexit_callfuncs(struct atexit_state *state)
         PyObject* the_func = Py_NewRef(cb->func);
         PyObject *res = PyObject_Call(cb->func, cb->args, cb->kwargs);
         if (res == NULL) {
-            _PyErr_WriteUnraisableMsg("in atexit callback", the_func);
+            PyErr_FormatUnraisable(
+                "Exception ignored in atexit callback %R", the_func);
         }
         else {
             Py_DECREF(res);
diff --git a/Modules/audioop.c b/Modules/audioop.c
deleted file mode 100644
index 604306d449265c..00000000000000
--- a/Modules/audioop.c
+++ /dev/null
@@ -1,2005 +0,0 @@
-/* The audioop module uses the code base in g777.c file of the Sox project.
- * Source: https://web.archive.org/web/19970716121258/http://www.spies.com/Sox/Archive/soxgamma.tar.gz
- *                 Programming the AdLib/Sound Blaster
- *                              FM Music Chips
- *                          Version 2.0 (24 Feb 1992)
- *
- *                 Copyright (c) 1991, 1992 by Jeffrey S. Lee
- *
- *                               jlee@smylex.uucp
- *
- *
- *
- *                       Warranty and Copyright Policy
- *
- *     This document is provided on an "as-is" basis, and its author makes
- *     no warranty or representation, express or implied, with respect to
- *    its quality performance or fitness for a particular purpose.  In no
- *    event will the author of this document be liable for direct, indirect,
- *    special, incidental, or consequential damages arising out of the use
- *    or inability to use the information contained within.  Use of this
- *    document is at your own risk.
- *
- *    This file may be used and copied freely so long as the applicable
- *    copyright notices are retained, and no modifications are made to the
- *    text of the document.  No money shall be charged for its distribution
- *    beyond reasonable shipping, handling and duplication costs, nor shall
- *    proprietary changes be made to this document so that it cannot be
- *    distributed freely.  This document may not be included in published
- *    material or commercial packages without the written consent of its
- *    author. */
-
-/* audioopmodule - Module to detect peak values in arrays */
-
-#define PY_SSIZE_T_CLEAN
-
-#include "Python.h"
-
-static const int maxvals[] = {0, 0x7F, 0x7FFF, 0x7FFFFF, 0x7FFFFFFF};
-/* -1 trick is needed on Windows to support -0x80000000 without a warning */
-static const int minvals[] = {0, -0x80, -0x8000, -0x800000, -0x7FFFFFFF-1};
-static const unsigned int masks[] = {0, 0xFF, 0xFFFF, 0xFFFFFF, 0xFFFFFFFF};
-
-static int
-fbound(double val, double minval, double maxval)
-{
-    if (val > maxval) {
-        val = maxval;
-    }
-    else if (val < minval + 1.0) {
-        val = minval;
-    }
-
-    /* Round towards minus infinity (-inf) */
-    val = floor(val);
-
-    /* Cast double to integer: round towards zero */
-    return (int)val;
-}
-
-
-#define BIAS 0x84   /* define the add-in bias for 16 bit samples */
-#define CLIP 32635
-#define SIGN_BIT        (0x80)          /* Sign bit for an A-law byte. */
-#define QUANT_MASK      (0xf)           /* Quantization field mask. */
-#define SEG_SHIFT       (4)             /* Left shift for segment number. */
-#define SEG_MASK        (0x70)          /* Segment field mask. */
-
-static const int16_t seg_aend[8] = {
-    0x1F, 0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF
-};
-static const int16_t seg_uend[8] = {
-    0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF, 0x1FFF
-};
-
-static int16_t
-search(int16_t val, const int16_t *table, int size)
-{
-    assert(0 <= size);
-    assert(size < INT16_MAX);
-    int i;
-
-    for (i = 0; i < size; i++) {
-        if (val <= *table++)
-            return (i);
-    }
-    return (size);
-}
-#define st_ulaw2linear16(uc) (_st_ulaw2linear16[uc])
-#define st_alaw2linear16(uc) (_st_alaw2linear16[uc])
-
-static const int16_t _st_ulaw2linear16[256] = {
-    -32124,  -31100,  -30076,  -29052,  -28028,  -27004,  -25980,
-    -24956,  -23932,  -22908,  -21884,  -20860,  -19836,  -18812,
-    -17788,  -16764,  -15996,  -15484,  -14972,  -14460,  -13948,
-    -13436,  -12924,  -12412,  -11900,  -11388,  -10876,  -10364,
-     -9852,   -9340,   -8828,   -8316,   -7932,   -7676,   -7420,
-     -7164,   -6908,   -6652,   -6396,   -6140,   -5884,   -5628,
-     -5372,   -5116,   -4860,   -4604,   -4348,   -4092,   -3900,
-     -3772,   -3644,   -3516,   -3388,   -3260,   -3132,   -3004,
-     -2876,   -2748,   -2620,   -2492,   -2364,   -2236,   -2108,
-     -1980,   -1884,   -1820,   -1756,   -1692,   -1628,   -1564,
-     -1500,   -1436,   -1372,   -1308,   -1244,   -1180,   -1116,
-     -1052,    -988,    -924,    -876,    -844,    -812,    -780,
-      -748,    -716,    -684,    -652,    -620,    -588,    -556,
-      -524,    -492,    -460,    -428,    -396,    -372,    -356,
-      -340,    -324,    -308,    -292,    -276,    -260,    -244,
-      -228,    -212,    -196,    -180,    -164,    -148,    -132,
-      -120,    -112,    -104,     -96,     -88,     -80,     -72,
-       -64,     -56,     -48,     -40,     -32,     -24,     -16,
-    -8,       0,   32124,   31100,   30076,   29052,   28028,
-     27004,   25980,   24956,   23932,   22908,   21884,   20860,
-     19836,   18812,   17788,   16764,   15996,   15484,   14972,
-     14460,   13948,   13436,   12924,   12412,   11900,   11388,
-     10876,   10364,    9852,    9340,    8828,    8316,    7932,
-      7676,    7420,    7164,    6908,    6652,    6396,    6140,
-      5884,    5628,    5372,    5116,    4860,    4604,    4348,
-      4092,    3900,    3772,    3644,    3516,    3388,    3260,
-      3132,    3004,    2876,    2748,    2620,    2492,    2364,
-      2236,    2108,    1980,    1884,    1820,    1756,    1692,
-      1628,    1564,    1500,    1436,    1372,    1308,    1244,
-      1180,    1116,    1052,     988,     924,     876,     844,
-       812,     780,     748,     716,     684,     652,     620,
-       588,     556,     524,     492,     460,     428,     396,
-       372,     356,     340,     324,     308,     292,     276,
-       260,     244,     228,     212,     196,     180,     164,
-       148,     132,     120,     112,     104,      96,      88,
-    80,      72,      64,      56,      48,      40,      32,
-    24,      16,       8,       0
-};
-
-/*
- * linear2ulaw() accepts a 14-bit signed integer and encodes it as u-law data
- * stored in an unsigned char.  This function should only be called with
- * the data shifted such that it only contains information in the lower
- * 14-bits.
- *
- * In order to simplify the encoding process, the original linear magnitude
- * is biased by adding 33 which shifts the encoding range from (0 - 8158) to
- * (33 - 8191). The result can be seen in the following encoding table:
- *
- *      Biased Linear Input Code        Compressed Code
- *      ------------------------        ---------------
- *      00000001wxyza                   000wxyz
- *      0000001wxyzab                   001wxyz
- *      000001wxyzabc                   010wxyz
- *      00001wxyzabcd                   011wxyz
- *      0001wxyzabcde                   100wxyz
- *      001wxyzabcdef                   101wxyz
- *      01wxyzabcdefg                   110wxyz
- *      1wxyzabcdefgh                   111wxyz
- *
- * Each biased linear code has a leading 1 which identifies the segment
- * number. The value of the segment number is equal to 7 minus the number
- * of leading 0's. The quantization interval is directly available as the
- * four bits wxyz.  * The trailing bits (a - h) are ignored.
- *
- * Ordinarily the complement of the resulting code word is used for
- * transmission, and so the code word is complemented before it is returned.
- *
- * For further information see John C. Bellamy's Digital Telephony, 1982,
- * John Wiley & Sons, pps 98-111 and 472-476.
- */
-static unsigned char
-st_14linear2ulaw(int16_t pcm_val)       /* 2's complement (14-bit range) */
-{
-    int16_t         mask;
-    int16_t         seg;
-    unsigned char   uval;
-
-    /* u-law inverts all bits */
-    /* Get the sign and the magnitude of the value. */
-    if (pcm_val < 0) {
-        pcm_val = -pcm_val;
-        mask = 0x7F;
-    } else {
-        mask = 0xFF;
-    }
-    if ( pcm_val > CLIP ) pcm_val = CLIP;           /* clip the magnitude */
-    pcm_val += (BIAS >> 2);
-
-    /* Convert the scaled magnitude to segment number. */
-    seg = search(pcm_val, seg_uend, 8);
-
-    /*
-     * Combine the sign, segment, quantization bits;
-     * and complement the code word.
-     */
-    if (seg >= 8)           /* out of range, return maximum value. */
-        return (unsigned char) (0x7F ^ mask);
-    else {
-        assert(seg >= 0);
-        uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);
-        return (uval ^ mask);
-    }
-
-}
-
-static const int16_t _st_alaw2linear16[256] = {
-     -5504,   -5248,   -6016,   -5760,   -4480,   -4224,   -4992,
-     -4736,   -7552,   -7296,   -8064,   -7808,   -6528,   -6272,
-     -7040,   -6784,   -2752,   -2624,   -3008,   -2880,   -2240,
-     -2112,   -2496,   -2368,   -3776,   -3648,   -4032,   -3904,
-     -3264,   -3136,   -3520,   -3392,  -22016,  -20992,  -24064,
-    -23040,  -17920,  -16896,  -19968,  -18944,  -30208,  -29184,
-    -32256,  -31232,  -26112,  -25088,  -28160,  -27136,  -11008,
-    -10496,  -12032,  -11520,   -8960,   -8448,   -9984,   -9472,
-    -15104,  -14592,  -16128,  -15616,  -13056,  -12544,  -14080,
-    -13568,    -344,    -328,    -376,    -360,    -280,    -264,
-      -312,    -296,    -472,    -456,    -504,    -488,    -408,
-      -392,    -440,    -424,     -88,     -72,    -120,    -104,
-       -24,      -8,     -56,     -40,    -216,    -200,    -248,
-      -232,    -152,    -136,    -184,    -168,   -1376,   -1312,
-     -1504,   -1440,   -1120,   -1056,   -1248,   -1184,   -1888,
-     -1824,   -2016,   -1952,   -1632,   -1568,   -1760,   -1696,
-      -688,    -656,    -752,    -720,    -560,    -528,    -624,
-      -592,    -944,    -912,   -1008,    -976,    -816,    -784,
-      -880,    -848,    5504,    5248,    6016,    5760,    4480,
-      4224,    4992,    4736,    7552,    7296,    8064,    7808,
-      6528,    6272,    7040,    6784,    2752,    2624,    3008,
-      2880,    2240,    2112,    2496,    2368,    3776,    3648,
-      4032,    3904,    3264,    3136,    3520,    3392,   22016,
-     20992,   24064,   23040,   17920,   16896,   19968,   18944,
-     30208,   29184,   32256,   31232,   26112,   25088,   28160,
-     27136,   11008,   10496,   12032,   11520,    8960,    8448,
-      9984,    9472,   15104,   14592,   16128,   15616,   13056,
-     12544,   14080,   13568,     344,     328,     376,     360,
-       280,     264,     312,     296,     472,     456,     504,
-       488,     408,     392,     440,     424,      88,      72,
-       120,     104,      24,       8,      56,      40,     216,
-       200,     248,     232,     152,     136,     184,     168,
-      1376,    1312,    1504,    1440,    1120,    1056,    1248,
-      1184,    1888,    1824,    2016,    1952,    1632,    1568,
-      1760,    1696,     688,     656,     752,     720,     560,
-       528,     624,     592,     944,     912,    1008,     976,
-       816,     784,     880,     848
-};
-
-/*
- * linear2alaw() accepts a 13-bit signed integer and encodes it as A-law data
- * stored in an unsigned char.  This function should only be called with
- * the data shifted such that it only contains information in the lower
- * 13-bits.
- *
- *              Linear Input Code       Compressed Code
- *      ------------------------        ---------------
- *      0000000wxyza                    000wxyz
- *      0000001wxyza                    001wxyz
- *      000001wxyzab                    010wxyz
- *      00001wxyzabc                    011wxyz
- *      0001wxyzabcd                    100wxyz
- *      001wxyzabcde                    101wxyz
- *      01wxyzabcdef                    110wxyz
- *      1wxyzabcdefg                    111wxyz
- *
- * For further information see John C. Bellamy's Digital Telephony, 1982,
- * John Wiley & Sons, pps 98-111 and 472-476.
- */
-static unsigned char
-st_linear2alaw(int16_t pcm_val) /* 2's complement (13-bit range) */
-{
-    int16_t         mask;
-    int16_t         seg;
-    unsigned char   aval;
-
-    /* A-law using even bit inversion */
-    if (pcm_val >= 0) {
-        mask = 0xD5;            /* sign (7th) bit = 1 */
-    } else {
-        mask = 0x55;            /* sign bit = 0 */
-        pcm_val = -pcm_val - 1;
-    }
-
-    /* Convert the scaled magnitude to segment number. */
-    seg = search(pcm_val, seg_aend, 8);
-
-    /* Combine the sign, segment, and quantization bits. */
-
-    if (seg >= 8)           /* out of range, return maximum value. */
-        return (unsigned char) (0x7F ^ mask);
-    else {
-        aval = (unsigned char) seg << SEG_SHIFT;
-        if (seg < 2)
-            aval |= (pcm_val >> 1) & QUANT_MASK;
-        else
-            aval |= (pcm_val >> seg) & QUANT_MASK;
-        return (aval ^ mask);
-    }
-}
-/* End of code taken from sox */
-
-/* Intel ADPCM step variation table */
-static const int indexTable[16] = {
-    -1, -1, -1, -1, 2, 4, 6, 8,
-    -1, -1, -1, -1, 2, 4, 6, 8,
-};
-
-static const int stepsizeTable[89] = {
-    7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
-    19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
-    50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
-    130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
-    337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
-    876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
-    2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
-    5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
-    15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
-};
-
-#define GETINTX(T, cp, i)  (*(T *)((unsigned char *)(cp) + (i)))
-#define SETINTX(T, cp, i, val)  do {                    \
-        *(T *)((unsigned char *)(cp) + (i)) = (T)(val); \
-    } while (0)
-
-
-#define GETINT8(cp, i)          GETINTX(signed char, (cp), (i))
-#define GETINT16(cp, i)         GETINTX(int16_t, (cp), (i))
-#define GETINT32(cp, i)         GETINTX(int32_t, (cp), (i))
-
-#ifdef WORDS_BIGENDIAN
-#define GETINT24(cp, i)  (                              \
-        ((unsigned char *)(cp) + (i))[2] +              \
-        (((unsigned char *)(cp) + (i))[1] * (1 << 8)) + \
-        (((signed char *)(cp) + (i))[0] * (1 << 16)) )
-#else
-#define GETINT24(cp, i)  (                              \
-        ((unsigned char *)(cp) + (i))[0] +              \
-        (((unsigned char *)(cp) + (i))[1] * (1 << 8)) + \
-        (((signed char *)(cp) + (i))[2] * (1 << 16)) )
-#endif
-
-
-#define SETINT8(cp, i, val)     SETINTX(signed char, (cp), (i), (val))
-#define SETINT16(cp, i, val)    SETINTX(int16_t, (cp), (i), (val))
-#define SETINT32(cp, i, val)    SETINTX(int32_t, (cp), (i), (val))
-
-#ifdef WORDS_BIGENDIAN
-#define SETINT24(cp, i, val)  do {                              \
-        ((unsigned char *)(cp) + (i))[2] = (int)(val);          \
-        ((unsigned char *)(cp) + (i))[1] = (int)(val) >> 8;     \
-        ((signed char *)(cp) + (i))[0] = (int)(val) >> 16;      \
-    } while (0)
-#else
-#define SETINT24(cp, i, val)  do {                              \
-        ((unsigned char *)(cp) + (i))[0] = (int)(val);          \
-        ((unsigned char *)(cp) + (i))[1] = (int)(val) >> 8;     \
-        ((signed char *)(cp) + (i))[2] = (int)(val) >> 16;      \
-    } while (0)
-#endif
-
-
-#define GETRAWSAMPLE(size, cp, i)  (                    \
-        (size == 1) ? (int)GETINT8((cp), (i)) :         \
-        (size == 2) ? (int)GETINT16((cp), (i)) :        \
-        (size == 3) ? (int)GETINT24((cp), (i)) :        \
-                      (int)GETINT32((cp), (i)))
-
-#define SETRAWSAMPLE(size, cp, i, val)  do {    \
-        if (size == 1)                          \
-            SETINT8((cp), (i), (val));          \
-        else if (size == 2)                     \
-            SETINT16((cp), (i), (val));         \
-        else if (size == 3)                     \
-            SETINT24((cp), (i), (val));         \
-        else                                    \
-            SETINT32((cp), (i), (val));         \
-    } while(0)
-
-
-#define GETSAMPLE32(size, cp, i)  (                           \
-        (size == 1) ? (int)GETINT8((cp), (i)) * (1 << 24) :   \
-        (size == 2) ? (int)GETINT16((cp), (i)) * (1 << 16) :  \
-        (size == 3) ? (int)GETINT24((cp), (i)) * (1 << 8) :   \
-                      (int)GETINT32((cp), (i)))
-
-#define SETSAMPLE32(size, cp, i, val)  do {     \
-        if (size == 1)                          \
-            SETINT8((cp), (i), (val) >> 24);    \
-        else if (size == 2)                     \
-            SETINT16((cp), (i), (val) >> 16);   \
-        else if (size == 3)                     \
-            SETINT24((cp), (i), (val) >> 8);    \
-        else                                    \
-            SETINT32((cp), (i), (val));         \
-    } while(0)
-
-static PyModuleDef audioopmodule;
-
-typedef struct {
-    PyObject *AudioopError;
-} audioop_state;
-
-static inline audioop_state *
-get_audioop_state(PyObject *module)
-{
-    void *state = PyModule_GetState(module);
-    assert(state != NULL);
-    return (audioop_state *)state;
-}
-
-static int
-audioop_check_size(PyObject *module, int size)
-{
-    if (size < 1 || size > 4) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Size should be 1, 2, 3 or 4");
-        return 0;
-    }
-    else
-        return 1;
-}
-
-static int
-audioop_check_parameters(PyObject *module, Py_ssize_t len, int size)
-{
-    if (!audioop_check_size(module, size))
-        return 0;
-    if (len % size != 0) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "not a whole number of frames");
-        return 0;
-    }
-    return 1;
-}
-
-/*[clinic input]
-module audioop
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=8fa8f6611be3591a]*/
-
-/*[clinic input]
-audioop.getsample
-
-    fragment: Py_buffer
-    width: int
-    index: Py_ssize_t
-    /
-
-Return the value of sample index from the fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_getsample_impl(PyObject *module, Py_buffer *fragment, int width,
-                       Py_ssize_t index)
-/*[clinic end generated code: output=8fe1b1775134f39a input=88edbe2871393549]*/
-{
-    int val;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    if (index < 0 || index >= fragment->len/width) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Index out of range");
-        return NULL;
-    }
-    val = GETRAWSAMPLE(width, fragment->buf, index*width);
-    return PyLong_FromLong(val);
-}
-
-/*[clinic input]
-audioop.max
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the maximum of the absolute value of all samples in a fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_max_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=e6c5952714f1c3f0 input=32bea5ea0ac8c223]*/
-{
-    Py_ssize_t i;
-    unsigned int absval, max = 0;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETRAWSAMPLE(width, fragment->buf, i);
-        /* Cast to unsigned before negating. Unsigned overflow is well-
-        defined, but signed overflow is not. */
-        if (val < 0) absval = (unsigned int)-(int64_t)val;
-        else absval = val;
-        if (absval > max) max = absval;
-    }
-    return PyLong_FromUnsignedLong(max);
-}
-
-/*[clinic input]
-audioop.minmax
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the minimum and maximum values of all samples in the sound fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_minmax_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=473fda66b15c836e input=89848e9b927a0696]*/
-{
-    Py_ssize_t i;
-    /* -1 trick below is needed on Windows to support -0x80000000 without
-    a warning */
-    int min = 0x7fffffff, max = -0x7FFFFFFF-1;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETRAWSAMPLE(width, fragment->buf, i);
-        if (val > max) max = val;
-        if (val < min) min = val;
-    }
-    return Py_BuildValue("(ii)", min, max);
-}
-
-/*[clinic input]
-audioop.avg
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the average over all samples in the fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_avg_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=4410a4c12c3586e6 input=1114493c7611334d]*/
-{
-    Py_ssize_t i;
-    int avg;
-    double sum = 0.0;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    for (i = 0; i < fragment->len; i += width)
-        sum += GETRAWSAMPLE(width, fragment->buf, i);
-    if (fragment->len == 0)
-        avg = 0;
-    else
-        avg = (int)floor(sum / (double)(fragment->len/width));
-    return PyLong_FromLong(avg);
-}
-
-/*[clinic input]
-audioop.rms
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the root-mean-square of the fragment, i.e. sqrt(sum(S_i^2)/n).
-[clinic start generated code]*/
-
-static PyObject *
-audioop_rms_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=1e7871c826445698 input=4cc57c6c94219d78]*/
-{
-    Py_ssize_t i;
-    unsigned int res;
-    double sum_squares = 0.0;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    for (i = 0; i < fragment->len; i += width) {
-        double val = GETRAWSAMPLE(width, fragment->buf, i);
-        sum_squares += val*val;
-    }
-    if (fragment->len == 0)
-        res = 0;
-    else
-        res = (unsigned int)sqrt(sum_squares / (double)(fragment->len/width));
-    return PyLong_FromUnsignedLong(res);
-}
-
-static double _sum2(const int16_t *a, const int16_t *b, Py_ssize_t len)
-{
-    Py_ssize_t i;
-    double sum = 0.0;
-
-    for( i=0; i<len; i++) {
-        sum = sum + (double)a[i]*(double)b[i];
-    }
-    return sum;
-}
-
-/*
-** Findfit tries to locate a sample within another sample. Its main use
-** is in echo-cancellation (to find the feedback of the output signal in
-** the input signal).
-** The method used is as follows:
-**
-** let R be the reference signal (length n) and A the input signal (length N)
-** with N > n, and let all sums be over i from 0 to n-1.
-**
-** Now, for each j in {0..N-n} we compute a factor fj so that -fj*R matches A
-** as good as possible, i.e. sum( (A[j+i]+fj*R[i])^2 ) is minimal. This
-** equation gives fj = sum( A[j+i]R[i] ) / sum(R[i]^2).
-**
-** Next, we compute the relative distance between the original signal and
-** the modified signal and minimize that over j:
-** vj = sum( (A[j+i]-fj*R[i])^2 ) / sum( A[j+i]^2 )  =>
-** vj = ( sum(A[j+i]^2)*sum(R[i]^2) - sum(A[j+i]R[i])^2 ) / sum( A[j+i]^2 )
-**
-** In the code variables correspond as follows:
-** cp1          A
-** cp2          R
-** len1         N
-** len2         n
-** aj_m1        A[j-1]
-** aj_lm1       A[j+n-1]
-** sum_ri_2     sum(R[i]^2)
-** sum_aij_2    sum(A[i+j]^2)
-** sum_aij_ri   sum(A[i+j]R[i])
-**
-** sum_ri is calculated once, sum_aij_2 is updated each step and sum_aij_ri
-** is completely recalculated each step.
-*/
-/*[clinic input]
-audioop.findfit
-
-    fragment: Py_buffer
-    reference: Py_buffer
-    /
-
-Try to match reference as well as possible to a portion of fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_findfit_impl(PyObject *module, Py_buffer *fragment,
-                     Py_buffer *reference)
-/*[clinic end generated code: output=5752306d83cbbada input=62c305605e183c9a]*/
-{
-    const int16_t *cp1, *cp2;
-    Py_ssize_t len1, len2;
-    Py_ssize_t j, best_j;
-    double aj_m1, aj_lm1;
-    double sum_ri_2, sum_aij_2, sum_aij_ri, result, best_result, factor;
-
-    if (fragment->len & 1 || reference->len & 1) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Strings should be even-sized");
-        return NULL;
-    }
-    cp1 = (const int16_t *)fragment->buf;
-    len1 = fragment->len >> 1;
-    cp2 = (const int16_t *)reference->buf;
-    len2 = reference->len >> 1;
-
-    if (len1 < len2) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "First sample should be longer");
-        return NULL;
-    }
-    sum_ri_2 = _sum2(cp2, cp2, len2);
-    sum_aij_2 = _sum2(cp1, cp1, len2);
-    sum_aij_ri = _sum2(cp1, cp2, len2);
-
-    result = (sum_ri_2*sum_aij_2 - sum_aij_ri*sum_aij_ri) / sum_aij_2;
-
-    best_result = result;
-    best_j = 0;
-
-    for ( j=1; j<=len1-len2; j++) {
-        aj_m1 = (double)cp1[j-1];
-        aj_lm1 = (double)cp1[j+len2-1];
-
-        sum_aij_2 = sum_aij_2 + aj_lm1*aj_lm1 - aj_m1*aj_m1;
-        sum_aij_ri = _sum2(cp1+j, cp2, len2);
-
-        result = (sum_ri_2*sum_aij_2 - sum_aij_ri*sum_aij_ri)
-            / sum_aij_2;
-
-        if ( result < best_result ) {
-            best_result = result;
-            best_j = j;
-        }
-
-    }
-
-    factor = _sum2(cp1+best_j, cp2, len2) / sum_ri_2;
-
-    return Py_BuildValue("(nf)", best_j, factor);
-}
-
-/*
-** findfactor finds a factor f so that the energy in A-fB is minimal.
-** See the comment for findfit for details.
-*/
-/*[clinic input]
-audioop.findfactor
-
-    fragment: Py_buffer
-    reference: Py_buffer
-    /
-
-Return a factor F such that rms(add(fragment, mul(reference, -F))) is minimal.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_findfactor_impl(PyObject *module, Py_buffer *fragment,
-                        Py_buffer *reference)
-/*[clinic end generated code: output=14ea95652c1afcf8 input=816680301d012b21]*/
-{
-    const int16_t *cp1, *cp2;
-    Py_ssize_t len;
-    double sum_ri_2, sum_aij_ri, result;
-
-    if (fragment->len & 1 || reference->len & 1) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Strings should be even-sized");
-        return NULL;
-    }
-    if (fragment->len != reference->len) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Samples should be same size");
-        return NULL;
-    }
-    cp1 = (const int16_t *)fragment->buf;
-    cp2 = (const int16_t *)reference->buf;
-    len = fragment->len >> 1;
-    sum_ri_2 = _sum2(cp2, cp2, len);
-    sum_aij_ri = _sum2(cp1, cp2, len);
-
-    result = sum_aij_ri / sum_ri_2;
-
-    return PyFloat_FromDouble(result);
-}
-
-/*
-** findmax returns the index of the n-sized segment of the input sample
-** that contains the most energy.
-*/
-/*[clinic input]
-audioop.findmax
-
-    fragment: Py_buffer
-    length: Py_ssize_t
-    /
-
-Search fragment for a slice of specified number of samples with maximum energy.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_findmax_impl(PyObject *module, Py_buffer *fragment,
-                     Py_ssize_t length)
-/*[clinic end generated code: output=f008128233523040 input=2f304801ed42383c]*/
-{
-    const int16_t *cp1;
-    Py_ssize_t len1;
-    Py_ssize_t j, best_j;
-    double aj_m1, aj_lm1;
-    double result, best_result;
-
-    if (fragment->len & 1) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Strings should be even-sized");
-        return NULL;
-    }
-    cp1 = (const int16_t *)fragment->buf;
-    len1 = fragment->len >> 1;
-
-    if (length < 0 || len1 < length) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Input sample should be longer");
-        return NULL;
-    }
-
-    result = _sum2(cp1, cp1, length);
-
-    best_result = result;
-    best_j = 0;
-
-    for ( j=1; j<=len1-length; j++) {
-        aj_m1 = (double)cp1[j-1];
-        aj_lm1 = (double)cp1[j+length-1];
-
-        result = result + aj_lm1*aj_lm1 - aj_m1*aj_m1;
-
-        if ( result > best_result ) {
-            best_result = result;
-            best_j = j;
-        }
-
-    }
-
-    return PyLong_FromSsize_t(best_j);
-}
-
-/*[clinic input]
-audioop.avgpp
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the average peak-peak value over all samples in the fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_avgpp_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=269596b0d5ae0b2b input=0b3cceeae420a7d9]*/
-{
-    Py_ssize_t i;
-    int prevval, prevextremevalid = 0, prevextreme = 0;
-    double sum = 0.0;
-    unsigned int avg;
-    int diff, prevdiff, nextreme = 0;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    if (fragment->len <= width)
-        return PyLong_FromLong(0);
-    prevval = GETRAWSAMPLE(width, fragment->buf, 0);
-    prevdiff = 17; /* Anything != 0, 1 */
-    for (i = width; i < fragment->len; i += width) {
-        int val = GETRAWSAMPLE(width, fragment->buf, i);
-        if (val != prevval) {
-            diff = val < prevval;
-            if (prevdiff == !diff) {
-                /* Derivative changed sign. Compute difference to last
-                ** extreme value and remember.
-                */
-                if (prevextremevalid) {
-                    if (prevval < prevextreme)
-                        sum += (double)((unsigned int)prevextreme -
-                                        (unsigned int)prevval);
-                    else
-                        sum += (double)((unsigned int)prevval -
-                                        (unsigned int)prevextreme);
-                    nextreme++;
-                }
-                prevextremevalid = 1;
-                prevextreme = prevval;
-            }
-            prevval = val;
-            prevdiff = diff;
-        }
-    }
-    if ( nextreme == 0 )
-        avg = 0;
-    else
-        avg = (unsigned int)(sum / (double)nextreme);
-    return PyLong_FromUnsignedLong(avg);
-}
-
-/*[clinic input]
-audioop.maxpp
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the maximum peak-peak value in the sound fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_maxpp_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=5b918ed5dbbdb978 input=671a13e1518f80a1]*/
-{
-    Py_ssize_t i;
-    int prevval, prevextremevalid = 0, prevextreme = 0;
-    unsigned int max = 0, extremediff;
-    int diff, prevdiff;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    if (fragment->len <= width)
-        return PyLong_FromLong(0);
-    prevval = GETRAWSAMPLE(width, fragment->buf, 0);
-    prevdiff = 17; /* Anything != 0, 1 */
-    for (i = width; i < fragment->len; i += width) {
-        int val = GETRAWSAMPLE(width, fragment->buf, i);
-        if (val != prevval) {
-            diff = val < prevval;
-            if (prevdiff == !diff) {
-                /* Derivative changed sign. Compute difference to
-                ** last extreme value and remember.
-                */
-                if (prevextremevalid) {
-                    if (prevval < prevextreme)
-                        extremediff = (unsigned int)prevextreme -
-                                      (unsigned int)prevval;
-                    else
-                        extremediff = (unsigned int)prevval -
-                                      (unsigned int)prevextreme;
-                    if ( extremediff > max )
-                        max = extremediff;
-                }
-                prevextremevalid = 1;
-                prevextreme = prevval;
-            }
-            prevval = val;
-            prevdiff = diff;
-        }
-    }
-    return PyLong_FromUnsignedLong(max);
-}
-
-/*[clinic input]
-audioop.cross
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Return the number of zero crossings in the fragment passed as an argument.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_cross_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=5938dcdd74a1f431 input=b1b3f15b83f6b41a]*/
-{
-    Py_ssize_t i;
-    int prevval;
-    Py_ssize_t ncross;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    ncross = -1;
-    prevval = 17; /* Anything <> 0,1 */
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETRAWSAMPLE(width, fragment->buf, i) < 0;
-        if (val != prevval) ncross++;
-        prevval = val;
-    }
-    return PyLong_FromSsize_t(ncross);
-}
-
-/*[clinic input]
-audioop.mul
-
-    fragment: Py_buffer
-    width: int
-    factor: double
-    /
-
-Return a fragment that has all samples in the original fragment multiplied by the floating-point value factor.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_mul_impl(PyObject *module, Py_buffer *fragment, int width,
-                 double factor)
-/*[clinic end generated code: output=6cd48fe796da0ea4 input=c726667baa157d3c]*/
-{
-    signed char *ncp;
-    Py_ssize_t i;
-    double maxval, minval;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    maxval = (double) maxvals[width];
-    minval = (double) minvals[width];
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment->len; i += width) {
-        double val = GETRAWSAMPLE(width, fragment->buf, i);
-        int ival = fbound(val * factor, minval, maxval);
-        SETRAWSAMPLE(width, ncp, i, ival);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.tomono
-
-    fragment: Py_buffer
-    width: int
-    lfactor: double
-    rfactor: double
-    /
-
-Convert a stereo fragment to a mono fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_tomono_impl(PyObject *module, Py_buffer *fragment, int width,
-                    double lfactor, double rfactor)
-/*[clinic end generated code: output=235c8277216d4e4e input=c4ec949b3f4dddfa]*/
-{
-    signed char *cp, *ncp;
-    Py_ssize_t len, i;
-    double maxval, minval;
-    PyObject *rv;
-
-    cp = fragment->buf;
-    len = fragment->len;
-    if (!audioop_check_parameters(module, len, width))
-        return NULL;
-    if (((len / width) & 1) != 0) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "not a whole number of frames");
-        return NULL;
-    }
-
-    maxval = (double) maxvals[width];
-    minval = (double) minvals[width];
-
-    rv = PyBytes_FromStringAndSize(NULL, len/2);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < len; i += width*2) {
-        double val1 = GETRAWSAMPLE(width, cp, i);
-        double val2 = GETRAWSAMPLE(width, cp, i + width);
-        double val = val1 * lfactor + val2 * rfactor;
-        int ival = fbound(val, minval, maxval);
-        SETRAWSAMPLE(width, ncp, i/2, ival);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.tostereo
-
-    fragment: Py_buffer
-    width: int
-    lfactor: double
-    rfactor: double
-    /
-
-Generate a stereo fragment from a mono fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_tostereo_impl(PyObject *module, Py_buffer *fragment, int width,
-                      double lfactor, double rfactor)
-/*[clinic end generated code: output=046f13defa5f1595 input=27b6395ebfdff37a]*/
-{
-    signed char *ncp;
-    Py_ssize_t i;
-    double maxval, minval;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    maxval = (double) maxvals[width];
-    minval = (double) minvals[width];
-
-    if (fragment->len > PY_SSIZE_T_MAX/2) {
-        PyErr_SetString(PyExc_MemoryError,
-                        "not enough memory for output buffer");
-        return NULL;
-    }
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len*2);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment->len; i += width) {
-        double val = GETRAWSAMPLE(width, fragment->buf, i);
-        int val1 = fbound(val * lfactor, minval, maxval);
-        int val2 = fbound(val * rfactor, minval, maxval);
-        SETRAWSAMPLE(width, ncp, i*2, val1);
-        SETRAWSAMPLE(width, ncp, i*2 + width, val2);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.add
-
-    fragment1: Py_buffer
-    fragment2: Py_buffer
-    width: int
-    /
-
-Return a fragment which is the addition of the two samples passed as parameters.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_add_impl(PyObject *module, Py_buffer *fragment1,
-                 Py_buffer *fragment2, int width)
-/*[clinic end generated code: output=60140af4d1aab6f2 input=4a8d4bae4c1605c7]*/
-{
-    signed char *ncp;
-    Py_ssize_t i;
-    int minval, maxval, newval;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment1->len, width))
-        return NULL;
-    if (fragment1->len != fragment2->len) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "Lengths should be the same");
-        return NULL;
-    }
-
-    maxval = maxvals[width];
-    minval = minvals[width];
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment1->len);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment1->len; i += width) {
-        int val1 = GETRAWSAMPLE(width, fragment1->buf, i);
-        int val2 = GETRAWSAMPLE(width, fragment2->buf, i);
-
-        if (width < 4) {
-            newval = val1 + val2;
-            /* truncate in case of overflow */
-            if (newval > maxval)
-                newval = maxval;
-            else if (newval < minval)
-                newval = minval;
-        }
-        else {
-            double fval = (double)val1 + (double)val2;
-            /* truncate in case of overflow */
-            newval = fbound(fval, minval, maxval);
-        }
-
-        SETRAWSAMPLE(width, ncp, i, newval);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.bias
-
-    fragment: Py_buffer
-    width: int
-    bias: int
-    /
-
-Return a fragment that is the original fragment with a bias added to each sample.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_bias_impl(PyObject *module, Py_buffer *fragment, int width, int bias)
-/*[clinic end generated code: output=6e0aa8f68f045093 input=2b5cce5c3bb4838c]*/
-{
-    signed char *ncp;
-    Py_ssize_t i;
-    unsigned int val = 0, mask;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-
-    mask = masks[width];
-
-    for (i = 0; i < fragment->len; i += width) {
-        if (width == 1)
-            val = GETINTX(unsigned char, fragment->buf, i);
-        else if (width == 2)
-            val = GETINTX(uint16_t, fragment->buf, i);
-        else if (width == 3)
-            val = ((unsigned int)GETINT24(fragment->buf, i)) & 0xffffffu;
-        else {
-            assert(width == 4);
-            val = GETINTX(uint32_t, fragment->buf, i);
-        }
-
-        val += (unsigned int)bias;
-        /* wrap around in case of overflow */
-        val &= mask;
-
-        if (width == 1)
-            SETINTX(unsigned char, ncp, i, val);
-        else if (width == 2)
-            SETINTX(uint16_t, ncp, i, val);
-        else if (width == 3)
-            SETINT24(ncp, i, (int)val);
-        else {
-            assert(width == 4);
-            SETINTX(uint32_t, ncp, i, val);
-        }
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.reverse
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Reverse the samples in a fragment and returns the modified fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_reverse_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=b44135698418da14 input=668f890cf9f9d225]*/
-{
-    unsigned char *ncp;
-    Py_ssize_t i;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len);
-    if (rv == NULL)
-        return NULL;
-    ncp = (unsigned char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETRAWSAMPLE(width, fragment->buf, i);
-        SETRAWSAMPLE(width, ncp, fragment->len - i - width, val);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.byteswap
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Convert big-endian samples to little-endian and vice versa.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_byteswap_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=50838a9e4b87cd4d input=fae7611ceffa5c82]*/
-{
-    unsigned char *ncp;
-    Py_ssize_t i;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len);
-    if (rv == NULL)
-        return NULL;
-    ncp = (unsigned char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment->len; i += width) {
-        int j;
-        for (j = 0; j < width; j++)
-            ncp[i + width - 1 - j] = ((unsigned char *)fragment->buf)[i + j];
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.lin2lin
-
-    fragment: Py_buffer
-    width: int
-    newwidth: int
-    /
-
-Convert samples between 1-, 2-, 3- and 4-byte formats.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_lin2lin_impl(PyObject *module, Py_buffer *fragment, int width,
-                     int newwidth)
-/*[clinic end generated code: output=17b14109248f1d99 input=5ce08c8aa2f24d96]*/
-{
-    unsigned char *ncp;
-    Py_ssize_t i, j;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-    if (!audioop_check_size(module, newwidth))
-        return NULL;
-
-    if (fragment->len/width > PY_SSIZE_T_MAX/newwidth) {
-        PyErr_SetString(PyExc_MemoryError,
-                        "not enough memory for output buffer");
-        return NULL;
-    }
-    rv = PyBytes_FromStringAndSize(NULL, (fragment->len/width)*newwidth);
-    if (rv == NULL)
-        return NULL;
-    ncp = (unsigned char *)PyBytes_AsString(rv);
-
-    for (i = j = 0; i < fragment->len; i += width, j += newwidth) {
-        int val = GETSAMPLE32(width, fragment->buf, i);
-        SETSAMPLE32(newwidth, ncp, j, val);
-    }
-    return rv;
-}
-
-static int
-gcd(int a, int b)
-{
-    while (b > 0) {
-        int tmp = a % b;
-        a = b;
-        b = tmp;
-    }
-    return a;
-}
-
-/*[clinic input]
-audioop.ratecv
-
-    fragment: Py_buffer
-    width: int
-    nchannels: int
-    inrate: int
-    outrate: int
-    state: object
-    weightA: int = 1
-    weightB: int = 0
-    /
-
-Convert the frame rate of the input fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_ratecv_impl(PyObject *module, Py_buffer *fragment, int width,
-                    int nchannels, int inrate, int outrate, PyObject *state,
-                    int weightA, int weightB)
-/*[clinic end generated code: output=624038e843243139 input=aff3acdc94476191]*/
-{
-    char *cp, *ncp;
-    Py_ssize_t len;
-    int chan, d, *prev_i, *cur_i, cur_o;
-    PyObject *samps, *str, *rv = NULL, *channel;
-    int bytes_per_frame;
-
-    if (!audioop_check_size(module, width))
-        return NULL;
-    if (nchannels < 1) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "# of channels should be >= 1");
-        return NULL;
-    }
-    if (width > INT_MAX / nchannels) {
-        /* This overflow test is rigorously correct because
-           both multiplicands are >= 1.  Use the argument names
-           from the docs for the error msg. */
-        PyErr_SetString(PyExc_OverflowError,
-                        "width * nchannels too big for a C int");
-        return NULL;
-    }
-    bytes_per_frame = width * nchannels;
-    if (weightA < 1 || weightB < 0) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-            "weightA should be >= 1, weightB should be >= 0");
-        return NULL;
-    }
-    assert(fragment->len >= 0);
-    if (fragment->len % bytes_per_frame != 0) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "not a whole number of frames");
-        return NULL;
-    }
-    if (inrate <= 0 || outrate <= 0) {
-        PyErr_SetString(get_audioop_state(module)->AudioopError,
-                        "sampling rate not > 0");
-        return NULL;
-    }
-    /* divide inrate and outrate by their greatest common divisor */
-    d = gcd(inrate, outrate);
-    inrate /= d;
-    outrate /= d;
-    /* divide weightA and weightB by their greatest common divisor */
-    d = gcd(weightA, weightB);
-    weightA /= d;
-    weightB /= d;
-
-    if ((size_t)nchannels > SIZE_MAX/sizeof(int)) {
-        PyErr_SetString(PyExc_MemoryError,
-                        "not enough memory for output buffer");
-        return NULL;
-    }
-    prev_i = (int *) PyMem_Malloc(nchannels * sizeof(int));
-    cur_i = (int *) PyMem_Malloc(nchannels * sizeof(int));
-    if (prev_i == NULL || cur_i == NULL) {
-        (void) PyErr_NoMemory();
-        goto exit;
-    }
-
-    len = fragment->len / bytes_per_frame; /* # of frames */
-
-    if (state == Py_None) {
-        d = -outrate;
-        for (chan = 0; chan < nchannels; chan++)
-            prev_i[chan] = cur_i[chan] = 0;
-    }
-    else {
-        if (!PyTuple_Check(state)) {
-            PyErr_SetString(PyExc_TypeError, "state must be a tuple or None");
-            goto exit;
-        }
-        if (!PyArg_ParseTuple(state,
-                        "iO!;ratecv(): illegal state argument",
-                        &d, &PyTuple_Type, &samps))
-            goto exit;
-        if (PyTuple_Size(samps) != nchannels) {
-            PyErr_SetString(get_audioop_state(module)->AudioopError,
-                            "illegal state argument");
-            goto exit;
-        }
-        for (chan = 0; chan < nchannels; chan++) {
-            channel = PyTuple_GetItem(samps, chan);
-            if (!PyTuple_Check(channel)) {
-                PyErr_SetString(PyExc_TypeError,
-                                "ratecv(): illegal state argument");
-                goto exit;
-            }
-            if (!PyArg_ParseTuple(channel,
-                                  "ii;ratecv(): illegal state argument",
-                                  &prev_i[chan], &cur_i[chan]))
-            {
-                goto exit;
-            }
-        }
-    }
-
-    /* str <- Space for the output buffer. */
-    if (len == 0)
-        str = PyBytes_FromStringAndSize(NULL, 0);
-    else {
-        /* There are len input frames, so we need (mathematically)
-           ceiling(len*outrate/inrate) output frames, and each frame
-           requires bytes_per_frame bytes.  Computing this
-           without spurious overflow is the challenge; we can
-           settle for a reasonable upper bound, though, in this
-           case ceiling(len/inrate) * outrate. */
-
-        /* compute ceiling(len/inrate) without overflow */
-        Py_ssize_t q = 1 + (len - 1) / inrate;
-        if (outrate > PY_SSIZE_T_MAX / q / bytes_per_frame)
-            str = NULL;
-        else
-            str = PyBytes_FromStringAndSize(NULL,
-                                            q * outrate * bytes_per_frame);
-    }
-    if (str == NULL) {
-        PyErr_SetString(PyExc_MemoryError,
-            "not enough memory for output buffer");
-        goto exit;
-    }
-    ncp = PyBytes_AsString(str);
-    cp = fragment->buf;
-
-    for (;;) {
-        while (d < 0) {
-            if (len == 0) {
-                samps = PyTuple_New(nchannels);
-                if (samps == NULL)
-                    goto exit;
-                for (chan = 0; chan < nchannels; chan++)
-                    PyTuple_SetItem(samps, chan,
-                        Py_BuildValue("(ii)",
-                                      prev_i[chan],
-                                      cur_i[chan]));
-                if (PyErr_Occurred())
-                    goto exit;
-                /* We have checked before that the length
-                 * of the string fits into int. */
-                len = (Py_ssize_t)(ncp - PyBytes_AsString(str));
-                rv = PyBytes_FromStringAndSize
-                    (PyBytes_AsString(str), len);
-                Py_SETREF(str, rv);
-                if (str == NULL)
-                    goto exit;
-                rv = Py_BuildValue("(O(iO))", str, d, samps);
-                Py_DECREF(samps);
-                Py_DECREF(str);
-                goto exit; /* return rv */
-            }
-            for (chan = 0; chan < nchannels; chan++) {
-                prev_i[chan] = cur_i[chan];
-                cur_i[chan] = GETSAMPLE32(width, cp, 0);
-                cp += width;
-                /* implements a simple digital filter */
-                cur_i[chan] = (int)(
-                    ((double)weightA * (double)cur_i[chan] +
-                     (double)weightB * (double)prev_i[chan]) /
-                    ((double)weightA + (double)weightB));
-            }
-            len--;
-            d += outrate;
-        }
-        while (d >= 0) {
-            for (chan = 0; chan < nchannels; chan++) {
-                cur_o = (int)(((double)prev_i[chan] * (double)d +
-                         (double)cur_i[chan] * (double)(outrate - d)) /
-                    (double)outrate);
-                SETSAMPLE32(width, ncp, 0, cur_o);
-                ncp += width;
-            }
-            d -= inrate;
-        }
-    }
-  exit:
-    PyMem_Free(prev_i);
-    PyMem_Free(cur_i);
-    return rv;
-}
-
-/*[clinic input]
-audioop.lin2ulaw
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Convert samples in the audio fragment to u-LAW encoding.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_lin2ulaw_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=14fb62b16fe8ea8e input=2450d1b870b6bac2]*/
-{
-    unsigned char *ncp;
-    Py_ssize_t i;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len/width);
-    if (rv == NULL)
-        return NULL;
-    ncp = (unsigned char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETSAMPLE32(width, fragment->buf, i);
-        *ncp++ = st_14linear2ulaw(val >> 18);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.ulaw2lin
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Convert sound fragments in u-LAW encoding to linearly encoded sound fragments.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_ulaw2lin_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=378356b047521ba2 input=45d53ddce5be7d06]*/
-{
-    unsigned char *cp;
-    signed char *ncp;
-    Py_ssize_t i;
-    PyObject *rv;
-
-    if (!audioop_check_size(module, width))
-        return NULL;
-
-    if (fragment->len > PY_SSIZE_T_MAX/width) {
-        PyErr_SetString(PyExc_MemoryError,
-                        "not enough memory for output buffer");
-        return NULL;
-    }
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len*width);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-
-    cp = fragment->buf;
-    for (i = 0; i < fragment->len*width; i += width) {
-        int val = st_ulaw2linear16(*cp++) * (1 << 16);
-        SETSAMPLE32(width, ncp, i, val);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.lin2alaw
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Convert samples in the audio fragment to a-LAW encoding.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_lin2alaw_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=d076f130121a82f0 input=ffb1ef8bb39da945]*/
-{
-    unsigned char *ncp;
-    Py_ssize_t i;
-    PyObject *rv;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len/width);
-    if (rv == NULL)
-        return NULL;
-    ncp = (unsigned char *)PyBytes_AsString(rv);
-
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETSAMPLE32(width, fragment->buf, i);
-        *ncp++ = st_linear2alaw(val >> 19);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.alaw2lin
-
-    fragment: Py_buffer
-    width: int
-    /
-
-Convert sound fragments in a-LAW encoding to linearly encoded sound fragments.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_alaw2lin_impl(PyObject *module, Py_buffer *fragment, int width)
-/*[clinic end generated code: output=85c365ec559df647 input=4140626046cd1772]*/
-{
-    unsigned char *cp;
-    signed char *ncp;
-    Py_ssize_t i;
-    int val;
-    PyObject *rv;
-
-    if (!audioop_check_size(module, width))
-        return NULL;
-
-    if (fragment->len > PY_SSIZE_T_MAX/width) {
-        PyErr_SetString(PyExc_MemoryError,
-                        "not enough memory for output buffer");
-        return NULL;
-    }
-    rv = PyBytes_FromStringAndSize(NULL, fragment->len*width);
-    if (rv == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(rv);
-    cp = fragment->buf;
-
-    for (i = 0; i < fragment->len*width; i += width) {
-        val = st_alaw2linear16(*cp++) * (1 << 16);
-        SETSAMPLE32(width, ncp, i, val);
-    }
-    return rv;
-}
-
-/*[clinic input]
-audioop.lin2adpcm
-
-    fragment: Py_buffer
-    width: int
-    state: object
-    /
-
-Convert samples to 4 bit Intel/DVI ADPCM encoding.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_lin2adpcm_impl(PyObject *module, Py_buffer *fragment, int width,
-                       PyObject *state)
-/*[clinic end generated code: output=cc19f159f16c6793 input=12919d549b90c90a]*/
-{
-    signed char *ncp;
-    Py_ssize_t i;
-    int step, valpred, delta,
-        index, sign, vpdiff, diff;
-    PyObject *rv = NULL, *str;
-    int outputbuffer = 0, bufferstep;
-
-    if (!audioop_check_parameters(module, fragment->len, width))
-        return NULL;
-
-    /* Decode state, should have (value, step) */
-    if ( state == Py_None ) {
-        /* First time, it seems. Set defaults */
-        valpred = 0;
-        index = 0;
-    }
-    else if (!PyTuple_Check(state)) {
-        PyErr_SetString(PyExc_TypeError, "state must be a tuple or None");
-        return NULL;
-    }
-    else if (!PyArg_ParseTuple(state, "ii;lin2adpcm(): illegal state argument",
-                               &valpred, &index))
-    {
-        return NULL;
-    }
-    else if (valpred >= 0x8000 || valpred < -0x8000 ||
-             (size_t)index >= Py_ARRAY_LENGTH(stepsizeTable)) {
-        PyErr_SetString(PyExc_ValueError, "bad state");
-        return NULL;
-    }
-
-    str = PyBytes_FromStringAndSize(NULL, fragment->len/(width*2));
-    if (str == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(str);
-
-    step = stepsizeTable[index];
-    bufferstep = 1;
-
-    for (i = 0; i < fragment->len; i += width) {
-        int val = GETSAMPLE32(width, fragment->buf, i) >> 16;
-
-        /* Step 1 - compute difference with previous value */
-        if (val < valpred) {
-            diff = valpred - val;
-            sign = 8;
-        }
-        else {
-            diff = val - valpred;
-            sign = 0;
-        }
-
-        /* Step 2 - Divide and clamp */
-        /* Note:
-        ** This code *approximately* computes:
-        **    delta = diff*4/step;
-        **    vpdiff = (delta+0.5)*step/4;
-        ** but in shift step bits are dropped. The net result of this
-        ** is that even if you have fast mul/div hardware you cannot
-        ** put it to good use since the fixup would be too expensive.
-        */
-        delta = 0;
-        vpdiff = (step >> 3);
-
-        if ( diff >= step ) {
-            delta = 4;
-            diff -= step;
-            vpdiff += step;
-        }
-        step >>= 1;
-        if ( diff >= step  ) {
-            delta |= 2;
-            diff -= step;
-            vpdiff += step;
-        }
-        step >>= 1;
-        if ( diff >= step ) {
-            delta |= 1;
-            vpdiff += step;
-        }
-
-        /* Step 3 - Update previous value */
-        if ( sign )
-            valpred -= vpdiff;
-        else
-            valpred += vpdiff;
-
-        /* Step 4 - Clamp previous value to 16 bits */
-        if ( valpred > 32767 )
-            valpred = 32767;
-        else if ( valpred < -32768 )
-            valpred = -32768;
-
-        /* Step 5 - Assemble value, update index and step values */
-        delta |= sign;
-
-        index += indexTable[delta];
-        if ( index < 0 ) index = 0;
-        if ( index > 88 ) index = 88;
-        step = stepsizeTable[index];
-
-        /* Step 6 - Output value */
-        if ( bufferstep ) {
-            outputbuffer = (delta * (1 << 4)) & 0xf0;
-        } else {
-            *ncp++ = (delta & 0x0f) | outputbuffer;
-        }
-        bufferstep = !bufferstep;
-    }
-    rv = Py_BuildValue("(O(ii))", str, valpred, index);
-    Py_DECREF(str);
-    return rv;
-}
-
-/*[clinic input]
-audioop.adpcm2lin
-
-    fragment: Py_buffer
-    width: int
-    state: object
-    /
-
-Decode an Intel/DVI ADPCM coded fragment to a linear fragment.
-[clinic start generated code]*/
-
-static PyObject *
-audioop_adpcm2lin_impl(PyObject *module, Py_buffer *fragment, int width,
-                       PyObject *state)
-/*[clinic end generated code: output=3440ea105acb3456 input=f5221144f5ca9ef0]*/
-{
-    signed char *cp;
-    signed char *ncp;
-    Py_ssize_t i, outlen;
-    int valpred, step, delta, index, sign, vpdiff;
-    PyObject *rv, *str;
-    int inputbuffer = 0, bufferstep;
-
-    if (!audioop_check_size(module, width))
-        return NULL;
-
-    /* Decode state, should have (value, step) */
-    if ( state == Py_None ) {
-        /* First time, it seems. Set defaults */
-        valpred = 0;
-        index = 0;
-    }
-    else if (!PyTuple_Check(state)) {
-        PyErr_SetString(PyExc_TypeError, "state must be a tuple or None");
-        return NULL;
-    }
-    else if (!PyArg_ParseTuple(state, "ii;adpcm2lin(): illegal state argument",
-                               &valpred, &index))
-    {
-        return NULL;
-    }
-    else if (valpred >= 0x8000 || valpred < -0x8000 ||
-             (size_t)index >= Py_ARRAY_LENGTH(stepsizeTable)) {
-        PyErr_SetString(PyExc_ValueError, "bad state");
-        return NULL;
-    }
-
-    if (fragment->len > (PY_SSIZE_T_MAX/2)/width) {
-        PyErr_SetString(PyExc_MemoryError,
-                        "not enough memory for output buffer");
-        return NULL;
-    }
-    outlen = fragment->len*width*2;
-    str = PyBytes_FromStringAndSize(NULL, outlen);
-    if (str == NULL)
-        return NULL;
-    ncp = (signed char *)PyBytes_AsString(str);
-    cp = fragment->buf;
-
-    step = stepsizeTable[index];
-    bufferstep = 0;
-
-    for (i = 0; i < outlen; i += width) {
-        /* Step 1 - get the delta value and compute next index */
-        if ( bufferstep ) {
-            delta = inputbuffer & 0xf;
-        } else {
-            inputbuffer = *cp++;
-            delta = (inputbuffer >> 4) & 0xf;
-        }
-
-        bufferstep = !bufferstep;
-
-        /* Step 2 - Find new index value (for later) */
-        index += indexTable[delta];
-        if ( index < 0 ) index = 0;
-        if ( index > 88 ) index = 88;
-
-        /* Step 3 - Separate sign and magnitude */
-        sign = delta & 8;
-        delta = delta & 7;
-
-        /* Step 4 - Compute difference and new predicted value */
-        /*
-        ** Computes 'vpdiff = (delta+0.5)*step/4', but see comment
-        ** in adpcm_coder.
-        */
-        vpdiff = step >> 3;
-        if ( delta & 4 ) vpdiff += step;
-        if ( delta & 2 ) vpdiff += step>>1;
-        if ( delta & 1 ) vpdiff += step>>2;
-
-        if ( sign )
-            valpred -= vpdiff;
-        else
-            valpred += vpdiff;
-
-        /* Step 5 - clamp output value */
-        if ( valpred > 32767 )
-            valpred = 32767;
-        else if ( valpred < -32768 )
-            valpred = -32768;
-
-        /* Step 6 - Update step value */
-        step = stepsizeTable[index];
-
-        /* Step 6 - Output value */
-        SETSAMPLE32(width, ncp, i, valpred * (1 << 16));
-    }
-
-    rv = Py_BuildValue("(O(ii))", str, valpred, index);
-    Py_DECREF(str);
-    return rv;
-}
-
-#include "clinic/audioop.c.h"
-
-static PyMethodDef audioop_methods[] = {
-    AUDIOOP_MAX_METHODDEF
-    AUDIOOP_MINMAX_METHODDEF
-    AUDIOOP_AVG_METHODDEF
-    AUDIOOP_MAXPP_METHODDEF
-    AUDIOOP_AVGPP_METHODDEF
-    AUDIOOP_RMS_METHODDEF
-    AUDIOOP_FINDFIT_METHODDEF
-    AUDIOOP_FINDMAX_METHODDEF
-    AUDIOOP_FINDFACTOR_METHODDEF
-    AUDIOOP_CROSS_METHODDEF
-    AUDIOOP_MUL_METHODDEF
-    AUDIOOP_ADD_METHODDEF
-    AUDIOOP_BIAS_METHODDEF
-    AUDIOOP_ULAW2LIN_METHODDEF
-    AUDIOOP_LIN2ULAW_METHODDEF
-    AUDIOOP_ALAW2LIN_METHODDEF
-    AUDIOOP_LIN2ALAW_METHODDEF
-    AUDIOOP_LIN2LIN_METHODDEF
-    AUDIOOP_ADPCM2LIN_METHODDEF
-    AUDIOOP_LIN2ADPCM_METHODDEF
-    AUDIOOP_TOMONO_METHODDEF
-    AUDIOOP_TOSTEREO_METHODDEF
-    AUDIOOP_GETSAMPLE_METHODDEF
-    AUDIOOP_REVERSE_METHODDEF
-    AUDIOOP_BYTESWAP_METHODDEF
-    AUDIOOP_RATECV_METHODDEF
-    { 0,          0 }
-};
-
-static int
-audioop_traverse(PyObject *module, visitproc visit, void *arg)
-{
-    audioop_state *state = get_audioop_state(module);
-    Py_VISIT(state->AudioopError);
-    return 0;
-}
-
-static int
-audioop_clear(PyObject *module)
-{
-    audioop_state *state = get_audioop_state(module);
-    Py_CLEAR(state->AudioopError);
-    return 0;
-}
-
-static void
-audioop_free(void *module) {
-    audioop_clear((PyObject *)module);
-}
-
-static int
-audioop_exec(PyObject* module)
-{
-    audioop_state *state = get_audioop_state(module);
-
-    state->AudioopError = PyErr_NewException("audioop.error", NULL, NULL);
-    if (state->AudioopError == NULL) {
-        return -1;
-    }
-
-    Py_INCREF(state->AudioopError);
-    if (PyModule_AddObject(module, "error", state->AudioopError) < 0) {
-        Py_DECREF(state->AudioopError);
-        return -1;
-    }
-
-    return 0;
-}
-
-static PyModuleDef_Slot audioop_slots[] = {
-    {Py_mod_exec, audioop_exec},
-    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
-    {0, NULL}
-};
-
-static struct PyModuleDef audioopmodule = {
-    PyModuleDef_HEAD_INIT,
-    "audioop",
-    NULL,
-    sizeof(audioop_state),
-    audioop_methods,
-    audioop_slots,
-    audioop_traverse,
-    audioop_clear,
-    audioop_free
-};
-
-PyMODINIT_FUNC
-PyInit_audioop(void)
-{
-    if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "'audioop' is deprecated and slated for removal in "
-                     "Python 3.13",
-                     7)) {
-        return NULL;
-    }
-
-    return PyModuleDef_Init(&audioopmodule);
-}
diff --git a/Modules/binascii.c b/Modules/binascii.c
index 4ecff4793be9a0..86493241a1fb7e 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -57,8 +57,6 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 #include "pycore_long.h"          // _PyLong_DigitValue
 #include "pycore_strhex.h"        // _Py_strhex_bytes_with_sep()
@@ -170,8 +168,6 @@ ascii_buffer_converter(PyObject *arg, Py_buffer *buf)
         return 1;
     }
     if (PyUnicode_Check(arg)) {
-        if (PyUnicode_READY(arg) < 0)
-            return 0;
         if (!PyUnicode_IS_ASCII(arg)) {
             PyErr_SetString(PyExc_ValueError,
                             "string argument should contain only ASCII characters");
@@ -189,13 +185,7 @@ ascii_buffer_converter(PyObject *arg, Py_buffer *buf)
                      "not '%.100s'", Py_TYPE(arg)->tp_name);
         return 0;
     }
-    if (!PyBuffer_IsContiguous(buf, 'C')) {
-        PyErr_Format(PyExc_TypeError,
-                     "argument should be a contiguous buffer, "
-                     "not '%.100s'", Py_TYPE(arg)->tp_name);
-        PyBuffer_Release(buf);
-        return 0;
-    }
+    assert(PyBuffer_IsContiguous(buf, 'C'));
     return Py_CLEANUP_SUPPORTED;
 }
 
@@ -780,12 +770,20 @@ binascii_crc32_impl(PyObject *module, Py_buffer *data, unsigned int crc)
 
         Py_BEGIN_ALLOW_THREADS
         /* Avoid truncation of length for very large buffers. crc32() takes
-           length as an unsigned int, which may be narrower than Py_ssize_t. */
-        while ((size_t)len > UINT_MAX) {
-            crc = crc32(crc, buf, UINT_MAX);
-            buf += (size_t) UINT_MAX;
-            len -= (size_t) UINT_MAX;
+           length as an unsigned int, which may be narrower than Py_ssize_t.
+           We further limit size due to bugs in Apple's macOS zlib.
+           See https://github.com/python/cpython/issues/105967
+         */
+#define ZLIB_CRC_CHUNK_SIZE 0x40000000
+#if ZLIB_CRC_CHUNK_SIZE > INT_MAX
+# error "unsupported less than 32-bit platform?"
+#endif
+        while ((size_t)len > ZLIB_CRC_CHUNK_SIZE) {
+            crc = crc32(crc, buf, ZLIB_CRC_CHUNK_SIZE);
+            buf += (size_t) ZLIB_CRC_CHUNK_SIZE;
+            len -= (size_t) ZLIB_CRC_CHUNK_SIZE;
         }
+#undef ZLIB_CRC_CHUNK_SIZE
         crc = crc32(crc, buf, (unsigned int)len);
         Py_END_ALLOW_THREADS
     } else {
@@ -1257,32 +1255,20 @@ static struct PyMethodDef binascii_module_methods[] = {
 PyDoc_STRVAR(doc_binascii, "Conversion between binary data and ASCII");
 
 static int
-binascii_exec(PyObject *module) {
-    int result;
+binascii_exec(PyObject *module)
+{
     binascii_state *state = PyModule_GetState(module);
     if (state == NULL) {
         return -1;
     }
 
     state->Error = PyErr_NewException("binascii.Error", PyExc_ValueError, NULL);
-    if (state->Error == NULL) {
-        return -1;
-    }
-    Py_INCREF(state->Error);
-    result = PyModule_AddObject(module, "Error", state->Error);
-    if (result == -1) {
-        Py_DECREF(state->Error);
+    if (PyModule_AddObjectRef(module, "Error", state->Error) < 0) {
         return -1;
     }
 
     state->Incomplete = PyErr_NewException("binascii.Incomplete", NULL, NULL);
-    if (state->Incomplete == NULL) {
-        return -1;
-    }
-    Py_INCREF(state->Incomplete);
-    result = PyModule_AddObject(module, "Incomplete", state->Incomplete);
-    if (result == -1) {
-        Py_DECREF(state->Incomplete);
+    if (PyModule_AddObjectRef(module, "Incomplete", state->Incomplete) < 0) {
         return -1;
     }
 
diff --git a/Modules/cjkcodecs/_codecs_iso2022.c b/Modules/cjkcodecs/_codecs_iso2022.c
index 86bb73b982a551..e8835ad0909633 100644
--- a/Modules/cjkcodecs/_codecs_iso2022.c
+++ b/Modules/cjkcodecs/_codecs_iso2022.c
@@ -207,8 +207,9 @@ ENCODER(iso2022)
 
         encoded = MAP_UNMAPPABLE;
         for (dsg = CONFIG_DESIGNATIONS; dsg->mark; dsg++) {
+            Py_UCS4 buf[2] = {c, 0};
             Py_ssize_t length = 1;
-            encoded = dsg->encoder(codec, &c, &length);
+            encoded = dsg->encoder(codec, buf, &length);
             if (encoded == MAP_MULTIPLE_AVAIL) {
                 /* this implementation won't work for pair
                  * of non-bmp characters. */
@@ -217,9 +218,11 @@ ENCODER(iso2022)
                         return MBERR_TOOFEW;
                     length = -1;
                 }
-                else
+                else {
+                    buf[1] = INCHAR2;
                     length = 2;
-                encoded = dsg->encoder(codec, &c, &length);
+                }
+                encoded = dsg->encoder(codec, buf, &length);
                 if (encoded != MAP_UNMAPPABLE) {
                     insize = length;
                     break;
diff --git a/Modules/cjkcodecs/cjkcodecs.h b/Modules/cjkcodecs/cjkcodecs.h
index 36bc7024df9acc..766f82983025e4 100644
--- a/Modules/cjkcodecs/cjkcodecs.h
+++ b/Modules/cjkcodecs/cjkcodecs.h
@@ -7,9 +7,13 @@
 #ifndef _CJKCODECS_H_
 #define _CJKCODECS_H_
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 #include "multibytecodec.h"
+#include "pycore_import.h"        // _PyImport_GetModuleAttrString()
 
 
 /* a unicode "undefined" code point */
@@ -394,11 +398,7 @@ register_maps(PyObject *module)
         strcpy(mhname + sizeof("__map_") - 1, h->charset);
 
         PyObject *capsule = PyCapsule_New((void *)h, MAP_CAPSULE, NULL);
-        if (capsule == NULL) {
-            return -1;
-        }
-        if (PyModule_AddObject(module, mhname, capsule) < 0) {
-            Py_DECREF(capsule);
+        if (PyModule_Add(module, mhname, capsule) < 0) {
             return -1;
         }
     }
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index 1b41c231eac5d8..305ade17b1f1aa 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_multibytecodec_MultibyteCodec_encode__doc__,
 "encode($self, /, input, errors=None)\n"
@@ -154,10 +154,6 @@ _multibytecodec_MultibyteCodec_decode(MultibyteCodecObject *self, PyObject *cons
     if (PyObject_GetBuffer(args[0], &input, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&input, 'C')) {
-        _PyArg_BadArgument("decode", "argument 'input'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -374,10 +370,6 @@ _multibytecodec_MultibyteIncrementalDecoder_decode(MultibyteIncrementalDecoderOb
     if (PyObject_GetBuffer(args[0], &input, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&input, 'C')) {
-        _PyArg_BadArgument("decode", "argument 'input'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -690,4 +682,4 @@ PyDoc_STRVAR(_multibytecodec___create_codec__doc__,
 
 #define _MULTIBYTECODEC___CREATE_CODEC_METHODDEF    \
     {"__create_codec", (PyCFunction)_multibytecodec___create_codec, METH_O, _multibytecodec___create_codec__doc__},
-/*[clinic end generated code: output=5f0e8dacddb0ac76 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=219a363662d2fbff input=a9049054013a1b77]*/
diff --git a/Modules/cjkcodecs/multibytecodec.c b/Modules/cjkcodecs/multibytecodec.c
index b501e4fb923232..5d3c16a98423ba 100644
--- a/Modules/cjkcodecs/multibytecodec.c
+++ b/Modules/cjkcodecs/multibytecodec.c
@@ -4,12 +4,17 @@
  * Written by Hye-Shik Chang <perky@FreeBSD.org>
  */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
 #include "multibytecodec.h"
 #include "clinic/multibytecodec.c.h"
 
+#include <stddef.h>               // offsetof()
+
 #define MODULE_NAME "_multibytecodec"
 
 typedef struct {
@@ -490,8 +495,6 @@ multibytecodec_encode(const MultibyteCodec *codec,
     int kind;
     const void *data;
 
-    if (PyUnicode_READY(text) < 0)
-        return NULL;
     datalen = PyUnicode_GET_LENGTH(text);
 
     if (datalen == 0 && !(flags & MBENC_RESET))
@@ -603,10 +606,6 @@ _multibytecodec_MultibyteCodec_encode_impl(MultibyteCodecObject *self,
         }
     }
 
-    if (PyUnicode_READY(input) < 0) {
-        Py_XDECREF(ucvt);
-        return NULL;
-    }
     datalen = PyUnicode_GET_LENGTH(input);
 
     errorcb = internal_error_callback(errors);
@@ -809,8 +808,6 @@ encoder_encode_stateful(MultibyteStatefulEncoderContext *ctx,
 
         inbuf = Py_NewRef(unistr);
     }
-    if (PyUnicode_READY(inbuf) < 0)
-        goto errorexit;
     inpos = 0;
     datalen = PyUnicode_GET_LENGTH(inbuf);
 
@@ -1616,9 +1613,9 @@ static struct PyMethodDef mbstreamreader_methods[] = {
 };
 
 static PyMemberDef mbstreamreader_members[] = {
-    {"stream",          T_OBJECT,
+    {"stream",          _Py_T_OBJECT,
                     offsetof(MultibyteStreamReaderObject, stream),
-                    READONLY, NULL},
+                    Py_READONLY, NULL},
     {NULL,}
 };
 
@@ -1723,7 +1720,7 @@ mbstreamwriter_iwrite(MultibyteStreamWriterObject *self,
     if (str == NULL)
         return -1;
 
-    wr = _PyObject_CallMethodOneArg(self->stream, str_write, str);
+    wr = PyObject_CallMethodOneArg(self->stream, str_write, str);
     Py_DECREF(str);
     if (wr == NULL)
         return -1;
@@ -1834,7 +1831,7 @@ _multibytecodec_MultibyteStreamWriter_reset_impl(MultibyteStreamWriterObject *se
     if (PyBytes_Size(pwrt) > 0) {
         PyObject *wr;
 
-        wr = _PyObject_CallMethodOneArg(self->stream, state->str_write, pwrt);
+        wr = PyObject_CallMethodOneArg(self->stream, state->str_write, pwrt);
         if (wr == NULL) {
             Py_DECREF(pwrt);
             return NULL;
@@ -1924,9 +1921,9 @@ static struct PyMethodDef mbstreamwriter_methods[] = {
 };
 
 static PyMemberDef mbstreamwriter_members[] = {
-    {"stream",          T_OBJECT,
+    {"stream",          _Py_T_OBJECT,
                     offsetof(MultibyteStreamWriterObject, stream),
-                    READONLY, NULL},
+                    Py_READONLY, NULL},
     {NULL,}
 };
 
diff --git a/Modules/cjkcodecs/multibytecodec.h b/Modules/cjkcodecs/multibytecodec.h
index f59362205d26fc..5b85e2e3de316d 100644
--- a/Modules/cjkcodecs/multibytecodec.h
+++ b/Modules/cjkcodecs/multibytecodec.h
@@ -10,6 +10,8 @@
 extern "C" {
 #endif
 
+#include "pycore_unicodeobject.h" // _PyUnicodeWriter
+
 #ifdef uint16_t
 typedef uint16_t ucs2_t, DBCHAR;
 #else
diff --git a/Modules/clinic/_abc.c.h b/Modules/clinic/_abc.c.h
index 2adec818c91311..04681fa2206a2a 100644
--- a/Modules/clinic/_abc.c.h
+++ b/Modules/clinic/_abc.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_abc__reset_registry__doc__,
 "_reset_registry($module, self, /)\n"
@@ -165,4 +161,4 @@ _abc_get_cache_token(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _abc_get_cache_token_impl(module);
 }
-/*[clinic end generated code: output=c2e69611a495c98d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1989b6716c950e17 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_asynciomodule.c.h b/Modules/clinic/_asynciomodule.c.h
index 6a780a80cd0bc4..d941c280a4300b 100644
--- a/Modules/clinic/_asynciomodule.c.h
+++ b/Modules/clinic/_asynciomodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_asyncio_Future___init____doc__,
 "Future(*, loop=None)\n"
@@ -1487,4 +1487,4 @@ _asyncio_current_task(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6b0e283177b07639 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f3864d8e2af7635f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_bisectmodule.c.h b/Modules/clinic/_bisectmodule.c.h
index 7944f5219b02a3..9955d0edb2699f 100644
--- a/Modules/clinic/_bisectmodule.c.h
+++ b/Modules/clinic/_bisectmodule.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_bisect_bisect_right__doc__,
 "bisect_right($module, /, a, x, lo=0, hi=None, *, key=None)\n"
@@ -433,4 +434,4 @@ _bisect_insort_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=5a7fa64bf9b262f3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4af5bd405149bf5f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_bz2module.c.h b/Modules/clinic/_bz2module.c.h
index d7797d639ae32e..de7b3993596446 100644
--- a/Modules/clinic/_bz2module.c.h
+++ b/Modules/clinic/_bz2module.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(_bz2_BZ2Compressor_compress__doc__,
 "compress($self, data, /)\n"
@@ -34,10 +35,6 @@ _bz2_BZ2Compressor_compress(BZ2Compressor *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _bz2_BZ2Compressor_compress_impl(self, &data);
 
 exit:
@@ -102,7 +99,7 @@ _bz2_BZ2Compressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     if (PyTuple_GET_SIZE(args) < 1) {
         goto skip_optional;
     }
-    compresslevel = _PyLong_AsInt(PyTuple_GET_ITEM(args, 0));
+    compresslevel = PyLong_AsInt(PyTuple_GET_ITEM(args, 0));
     if (compresslevel == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -180,10 +177,6 @@ _bz2_BZ2Decompressor_decompress(BZ2Decompressor *self, PyObject *const *args, Py
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -241,4 +234,4 @@ _bz2_BZ2Decompressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=805400e4805098ec input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8daa62f47cc4853d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_codecsmodule.c.h b/Modules/clinic/_codecsmodule.c.h
index f11bcc8815b920..12fea806ab5209 100644
--- a/Modules/clinic/_codecsmodule.c.h
+++ b/Modules/clinic/_codecsmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(_codecs_register__doc__,
 "register($module, search_function, /)\n"
@@ -303,10 +303,6 @@ _codecs_escape_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("escape_decode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -422,10 +418,6 @@ _codecs_utf_7_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_7_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -492,10 +484,6 @@ _codecs_utf_8_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_8_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -562,10 +550,6 @@ _codecs_utf_16_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -632,10 +616,6 @@ _codecs_utf_16_le_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_le_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -702,10 +682,6 @@ _codecs_utf_16_be_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_be_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -774,10 +750,6 @@ _codecs_utf_16_ex_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_16_ex_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -802,7 +774,7 @@ _codecs_utf_16_ex_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (nargs < 3) {
         goto skip_optional;
     }
-    byteorder = _PyLong_AsInt(args[2]);
+    byteorder = PyLong_AsInt(args[2]);
     if (byteorder == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -851,10 +823,6 @@ _codecs_utf_32_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -921,10 +889,6 @@ _codecs_utf_32_le_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_le_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -991,10 +955,6 @@ _codecs_utf_32_be_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_be_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1063,10 +1023,6 @@ _codecs_utf_32_ex_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("utf_32_ex_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1091,7 +1047,7 @@ _codecs_utf_32_ex_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (nargs < 3) {
         goto skip_optional;
     }
-    byteorder = _PyLong_AsInt(args[2]);
+    byteorder = PyLong_AsInt(args[2]);
     if (byteorder == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1149,10 +1105,6 @@ _codecs_unicode_escape_decode(PyObject *module, PyObject *const *args, Py_ssize_
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("unicode_escape_decode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -1229,10 +1181,6 @@ _codecs_raw_unicode_escape_decode(PyObject *module, PyObject *const *args, Py_ss
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("raw_unicode_escape_decode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -1299,10 +1247,6 @@ _codecs_latin_1_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("latin_1_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1361,10 +1305,6 @@ _codecs_ascii_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("ascii_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1424,10 +1364,6 @@ _codecs_charmap_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("charmap_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1493,10 +1429,6 @@ _codecs_mbcs_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("mbcs_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1567,10 +1499,6 @@ _codecs_oem_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("oem_decode", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1639,17 +1567,13 @@ _codecs_code_page_decode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (!_PyArg_CheckPositional("code_page_decode", nargs, 2, 4)) {
         goto exit;
     }
-    codepage = _PyLong_AsInt(args[0]);
+    codepage = PyLong_AsInt(args[0]);
     if (codepage == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (PyObject_GetBuffer(args[1], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("code_page_decode", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (nargs < 3) {
         goto skip_optional;
     }
@@ -1726,10 +1650,6 @@ _codecs_readbuffer_encode(PyObject *module, PyObject *const *args, Py_ssize_t na
         if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&data, 'C')) {
-            _PyArg_BadArgument("readbuffer_encode", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (nargs < 2) {
         goto skip_optional;
@@ -1790,9 +1710,6 @@ _codecs_utf_7_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("utf_7_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -1848,9 +1765,6 @@ _codecs_utf_8_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("utf_8_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -1907,9 +1821,6 @@ _codecs_utf_16_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("utf_16_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -1935,7 +1846,7 @@ _codecs_utf_16_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 3) {
         goto skip_optional;
     }
-    byteorder = _PyLong_AsInt(args[2]);
+    byteorder = PyLong_AsInt(args[2]);
     if (byteorder == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1972,9 +1883,6 @@ _codecs_utf_16_le_encode(PyObject *module, PyObject *const *args, Py_ssize_t nar
         _PyArg_BadArgument("utf_16_le_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2030,9 +1938,6 @@ _codecs_utf_16_be_encode(PyObject *module, PyObject *const *args, Py_ssize_t nar
         _PyArg_BadArgument("utf_16_be_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2089,9 +1994,6 @@ _codecs_utf_32_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("utf_32_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2117,7 +2019,7 @@ _codecs_utf_32_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 3) {
         goto skip_optional;
     }
-    byteorder = _PyLong_AsInt(args[2]);
+    byteorder = PyLong_AsInt(args[2]);
     if (byteorder == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2154,9 +2056,6 @@ _codecs_utf_32_le_encode(PyObject *module, PyObject *const *args, Py_ssize_t nar
         _PyArg_BadArgument("utf_32_le_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2212,9 +2111,6 @@ _codecs_utf_32_be_encode(PyObject *module, PyObject *const *args, Py_ssize_t nar
         _PyArg_BadArgument("utf_32_be_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2270,9 +2166,6 @@ _codecs_unicode_escape_encode(PyObject *module, PyObject *const *args, Py_ssize_
         _PyArg_BadArgument("unicode_escape_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2328,9 +2221,6 @@ _codecs_raw_unicode_escape_encode(PyObject *module, PyObject *const *args, Py_ss
         _PyArg_BadArgument("raw_unicode_escape_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2386,9 +2276,6 @@ _codecs_latin_1_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         _PyArg_BadArgument("latin_1_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2444,9 +2331,6 @@ _codecs_ascii_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("ascii_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2503,9 +2387,6 @@ _codecs_charmap_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         _PyArg_BadArgument("charmap_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2560,9 +2441,6 @@ _codecs_charmap_build(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("charmap_build", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     map = arg;
     return_value = _codecs_charmap_build_impl(module, map);
 
@@ -2597,9 +2475,6 @@ _codecs_mbcs_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("mbcs_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2658,9 +2533,6 @@ _codecs_oem_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("oem_encode", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     str = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -2717,7 +2589,7 @@ _codecs_code_page_encode(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (!_PyArg_CheckPositional("code_page_encode", nargs, 2, 3)) {
         goto exit;
     }
-    code_page = _PyLong_AsInt(args[0]);
+    code_page = PyLong_AsInt(args[0]);
     if (code_page == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2725,9 +2597,6 @@ _codecs_code_page_encode(PyObject *module, PyObject *const *args, Py_ssize_t nar
         _PyArg_BadArgument("code_page_encode", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     str = args[1];
     if (nargs < 3) {
         goto skip_optional;
@@ -2869,4 +2738,4 @@ _codecs_lookup_error(PyObject *module, PyObject *arg)
 #ifndef _CODECS_CODE_PAGE_ENCODE_METHODDEF
     #define _CODECS_CODE_PAGE_ENCODE_METHODDEF
 #endif /* !defined(_CODECS_CODE_PAGE_ENCODE_METHODDEF) */
-/*[clinic end generated code: output=603da07cf8dfeb4b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d8d9e372f7ccba35 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_collectionsmodule.c.h b/Modules/clinic/_collectionsmodule.c.h
index 3882d069216e28..591ab50c76a8e8 100644
--- a/Modules/clinic/_collectionsmodule.c.h
+++ b/Modules/clinic/_collectionsmodule.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_collections__count_elements__doc__,
 "_count_elements($module, mapping, iterable, /)\n"
@@ -75,4 +72,4 @@ tuplegetter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=00e516317d2b8bed input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c896a72f8c45930d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_contextvarsmodule.c.h b/Modules/clinic/_contextvarsmodule.c.h
index 461d4845635ef0..b1885e41c355d2 100644
--- a/Modules/clinic/_contextvarsmodule.c.h
+++ b/Modules/clinic/_contextvarsmodule.c.h
@@ -2,12 +2,6 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
 PyDoc_STRVAR(_contextvars_copy_context__doc__,
 "copy_context($module, /)\n"
 "--\n"
@@ -24,4 +18,4 @@ _contextvars_copy_context(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _contextvars_copy_context_impl(module);
 }
-/*[clinic end generated code: output=1736c27450823e70 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=26e07024451baf52 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_cryptmodule.c.h b/Modules/clinic/_cryptmodule.c.h
deleted file mode 100644
index 97b70b3c17e9a2..00000000000000
--- a/Modules/clinic/_cryptmodule.c.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*[clinic input]
-preserve
-[clinic start generated code]*/
-
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
-PyDoc_STRVAR(crypt_crypt__doc__,
-"crypt($module, word, salt, /)\n"
-"--\n"
-"\n"
-"Hash a *word* with the given *salt* and return the hashed password.\n"
-"\n"
-"*word* will usually be a user\'s password.  *salt* (either a random 2 or 16\n"
-"character string, possibly prefixed with $digit$ to indicate the method)\n"
-"will be used to perturb the encryption algorithm and produce distinct\n"
-"results for a given *word*.");
-
-#define CRYPT_CRYPT_METHODDEF    \
-    {"crypt", _PyCFunction_CAST(crypt_crypt), METH_FASTCALL, crypt_crypt__doc__},
-
-static PyObject *
-crypt_crypt_impl(PyObject *module, const char *word, const char *salt);
-
-static PyObject *
-crypt_crypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    const char *word;
-    const char *salt;
-
-    if (!_PyArg_CheckPositional("crypt", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[0])) {
-        _PyArg_BadArgument("crypt", "argument 1", "str", args[0]);
-        goto exit;
-    }
-    Py_ssize_t word_length;
-    word = PyUnicode_AsUTF8AndSize(args[0], &word_length);
-    if (word == NULL) {
-        goto exit;
-    }
-    if (strlen(word) != (size_t)word_length) {
-        PyErr_SetString(PyExc_ValueError, "embedded null character");
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[1])) {
-        _PyArg_BadArgument("crypt", "argument 2", "str", args[1]);
-        goto exit;
-    }
-    Py_ssize_t salt_length;
-    salt = PyUnicode_AsUTF8AndSize(args[1], &salt_length);
-    if (salt == NULL) {
-        goto exit;
-    }
-    if (strlen(salt) != (size_t)salt_length) {
-        PyErr_SetString(PyExc_ValueError, "embedded null character");
-        goto exit;
-    }
-    return_value = crypt_crypt_impl(module, word, salt);
-
-exit:
-    return return_value;
-}
-/*[clinic end generated code: output=235ccef9211184f4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_csv.c.h b/Modules/clinic/_csv.c.h
index 8900946350a524..2442bdcde5679f 100644
--- a/Modules/clinic/_csv.c.h
+++ b/Modules/clinic/_csv.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_csv_list_dialects__doc__,
 "list_dialects($module, /)\n"
@@ -206,4 +206,4 @@ _csv_field_size_limit(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=94374e41eb2806ee input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9ec59717f5414d8b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_curses_panel.c.h b/Modules/clinic/_curses_panel.c.h
index bb6cc90f0438c0..7945d93b5433f7 100644
--- a/Modules/clinic/_curses_panel.c.h
+++ b/Modules/clinic/_curses_panel.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_curses_panel_panel_bottom__doc__,
 "bottom($self, /)\n"
@@ -190,11 +186,11 @@ _curses_panel_panel_move(PyCursesPanelObject *self, PyTypeObject *cls, PyObject
     if (!args) {
         goto exit;
     }
-    y = _PyLong_AsInt(args[0]);
+    y = PyLong_AsInt(args[0]);
     if (y == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    x = _PyLong_AsInt(args[1]);
+    x = PyLong_AsInt(args[1]);
     if (x == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -422,4 +418,4 @@ _curses_panel_update_panels(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _curses_panel_update_panels_impl(module);
 }
-/*[clinic end generated code: output=8d0533681891523c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=636beecf71d96ff1 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_cursesmodule.c.h b/Modules/clinic/_cursesmodule.c.h
index 9d99d41af5d2d9..f7e0aaf7b23649 100644
--- a/Modules/clinic/_cursesmodule.c.h
+++ b/Modules/clinic/_cursesmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_curses_window_addch__doc__,
 "addch([y, x,] ch, [attr=_curses.A_NORMAL])\n"
@@ -708,11 +708,11 @@ _curses_window_enclose(PyCursesWindowObject *self, PyObject *const *args, Py_ssi
     if (!_PyArg_CheckPositional("enclose", nargs, 2, 2)) {
         goto exit;
     }
-    y = _PyLong_AsInt(args[0]);
+    y = PyLong_AsInt(args[0]);
     if (y == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    x = _PyLong_AsInt(args[1]);
+    x = PyLong_AsInt(args[1]);
     if (x == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1264,7 +1264,7 @@ _curses_window_is_linetouched(PyCursesWindowObject *self, PyObject *arg)
     PyObject *return_value = NULL;
     int line;
 
-    line = _PyLong_AsInt(arg);
+    line = PyLong_AsInt(arg);
     if (line == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1508,11 +1508,11 @@ _curses_window_redrawln(PyCursesWindowObject *self, PyObject *const *args, Py_ss
     if (!_PyArg_CheckPositional("redrawln", nargs, 2, 2)) {
         goto exit;
     }
-    beg = _PyLong_AsInt(args[0]);
+    beg = PyLong_AsInt(args[0]);
     if (beg == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    num = _PyLong_AsInt(args[1]);
+    num = PyLong_AsInt(args[1]);
     if (num == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1607,11 +1607,11 @@ _curses_window_setscrreg(PyCursesWindowObject *self, PyObject *const *args, Py_s
     if (!_PyArg_CheckPositional("setscrreg", nargs, 2, 2)) {
         goto exit;
     }
-    top = _PyLong_AsInt(args[0]);
+    top = PyLong_AsInt(args[0]);
     if (top == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    bottom = _PyLong_AsInt(args[1]);
+    bottom = PyLong_AsInt(args[1]);
     if (bottom == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2009,7 +2009,7 @@ _curses_color_pair(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int pair_number;
 
-    pair_number = _PyLong_AsInt(arg);
+    pair_number = PyLong_AsInt(arg);
     if (pair_number == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2045,7 +2045,7 @@ _curses_curs_set(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int visibility;
 
-    visibility = _PyLong_AsInt(arg);
+    visibility = PyLong_AsInt(arg);
     if (visibility == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2120,7 +2120,7 @@ _curses_delay_output(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int ms;
 
-    ms = _PyLong_AsInt(arg);
+    ms = PyLong_AsInt(arg);
     if (ms == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2363,15 +2363,15 @@ _curses_ungetmouse(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
             id = (short) ival;
         }
     }
-    x = _PyLong_AsInt(args[1]);
+    x = PyLong_AsInt(args[1]);
     if (x == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    y = _PyLong_AsInt(args[2]);
+    y = PyLong_AsInt(args[2]);
     if (y == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    z = _PyLong_AsInt(args[3]);
+    z = PyLong_AsInt(args[3]);
     if (z == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2525,7 +2525,7 @@ _curses_has_key(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int key;
 
-    key = _PyLong_AsInt(arg);
+    key = PyLong_AsInt(arg);
     if (key == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2744,7 +2744,7 @@ _curses_setupterm(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
             goto skip_optional_pos;
         }
     }
-    fd = _PyLong_AsInt(args[1]);
+    fd = PyLong_AsInt(args[1]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2808,7 +2808,7 @@ _curses_set_escdelay(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int ms;
 
-    ms = _PyLong_AsInt(arg);
+    ms = PyLong_AsInt(arg);
     if (ms == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2871,7 +2871,7 @@ _curses_set_tabsize(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int size;
 
-    size = _PyLong_AsInt(arg);
+    size = PyLong_AsInt(arg);
     if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2957,11 +2957,11 @@ _curses_is_term_resized(PyObject *module, PyObject *const *args, Py_ssize_t narg
     if (!_PyArg_CheckPositional("is_term_resized", nargs, 2, 2)) {
         goto exit;
     }
-    nlines = _PyLong_AsInt(args[0]);
+    nlines = PyLong_AsInt(args[0]);
     if (nlines == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    ncols = _PyLong_AsInt(args[1]);
+    ncols = PyLong_AsInt(args[1]);
     if (ncols == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2994,7 +2994,7 @@ _curses_keyname(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int key;
 
-    key = _PyLong_AsInt(arg);
+    key = PyLong_AsInt(arg);
     if (key == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3101,7 +3101,7 @@ _curses_mouseinterval(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int interval;
 
-    interval = _PyLong_AsInt(arg);
+    interval = PyLong_AsInt(arg);
     if (interval == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3163,7 +3163,7 @@ PyDoc_STRVAR(_curses_napms__doc__,
 #define _CURSES_NAPMS_METHODDEF    \
     {"napms", (PyCFunction)_curses_napms, METH_O, _curses_napms__doc__},
 
-static PyObject *
+static int
 _curses_napms_impl(PyObject *module, int ms);
 
 static PyObject *
@@ -3171,12 +3171,17 @@ _curses_napms(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
     int ms;
+    int _return_value;
 
-    ms = _PyLong_AsInt(arg);
+    ms = PyLong_AsInt(arg);
     if (ms == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    return_value = _curses_napms_impl(module, ms);
+    _return_value = _curses_napms_impl(module, ms);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong((long)_return_value);
 
 exit:
     return return_value;
@@ -3209,11 +3214,11 @@ _curses_newpad(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("newpad", nargs, 2, 2)) {
         goto exit;
     }
-    nlines = _PyLong_AsInt(args[0]);
+    nlines = PyLong_AsInt(args[0]);
     if (nlines == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    ncols = _PyLong_AsInt(args[1]);
+    ncols = PyLong_AsInt(args[1]);
     if (ncols == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3471,7 +3476,7 @@ _curses_pair_number(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int attr;
 
-    attr = _PyLong_AsInt(arg);
+    attr = PyLong_AsInt(arg);
     if (attr == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3700,11 +3705,11 @@ _curses_resizeterm(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("resizeterm", nargs, 2, 2)) {
         goto exit;
     }
-    nlines = _PyLong_AsInt(args[0]);
+    nlines = PyLong_AsInt(args[0]);
     if (nlines == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    ncols = _PyLong_AsInt(args[1]);
+    ncols = PyLong_AsInt(args[1]);
     if (ncols == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3751,11 +3756,11 @@ _curses_resize_term(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("resize_term", nargs, 2, 2)) {
         goto exit;
     }
-    nlines = _PyLong_AsInt(args[0]);
+    nlines = PyLong_AsInt(args[0]);
     if (nlines == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    ncols = _PyLong_AsInt(args[1]);
+    ncols = PyLong_AsInt(args[1]);
     if (ncols == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3816,11 +3821,11 @@ _curses_setsyx(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("setsyx", nargs, 2, 2)) {
         goto exit;
     }
-    y = _PyLong_AsInt(args[0]);
+    y = PyLong_AsInt(args[0]);
     if (y == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    x = _PyLong_AsInt(args[1]);
+    x = PyLong_AsInt(args[1]);
     if (x == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -4089,7 +4094,7 @@ _curses_typeahead(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int fd;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -4313,4 +4318,4 @@ _curses_has_extended_color_support(PyObject *module, PyObject *Py_UNUSED(ignored
 #ifndef _CURSES_USE_DEFAULT_COLORS_METHODDEF
     #define _CURSES_USE_DEFAULT_COLORS_METHODDEF
 #endif /* !defined(_CURSES_USE_DEFAULT_COLORS_METHODDEF) */
-/*[clinic end generated code: output=27a2364193b503c1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=96887782374f070a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_datetimemodule.c.h b/Modules/clinic/_datetimemodule.c.h
index 51e51e3791cc24..1ee50fc2a13762 100644
--- a/Modules/clinic/_datetimemodule.c.h
+++ b/Modules/clinic/_datetimemodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(datetime_date_fromtimestamp__doc__,
 "fromtimestamp($type, timestamp, /)\n"
@@ -64,15 +64,15 @@ iso_calendar_date_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     if (!fastargs) {
         goto exit;
     }
-    year = _PyLong_AsInt(fastargs[0]);
+    year = PyLong_AsInt(fastargs[0]);
     if (year == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    week = _PyLong_AsInt(fastargs[1]);
+    week = PyLong_AsInt(fastargs[1]);
     if (week == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    weekday = _PyLong_AsInt(fastargs[2]);
+    weekday = PyLong_AsInt(fastargs[2]);
     if (weekday == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -146,4 +146,4 @@ datetime_datetime_now(PyTypeObject *type, PyObject *const *args, Py_ssize_t narg
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=42654669940e0e3a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=562813dd3e164794 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_dbmmodule.c.h b/Modules/clinic/_dbmmodule.c.h
index 172dc4b9d5793e..5a4aba2825e03a 100644
--- a/Modules/clinic/_dbmmodule.c.h
+++ b/Modules/clinic/_dbmmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_dbm_dbm_close__doc__,
 "close($self, /)\n"
@@ -138,6 +134,28 @@ _dbm_dbm_setdefault(dbmobject *self, PyTypeObject *cls, PyObject *const *args, P
     return return_value;
 }
 
+PyDoc_STRVAR(_dbm_dbm_clear__doc__,
+"clear($self, /)\n"
+"--\n"
+"\n"
+"Remove all items from the database.");
+
+#define _DBM_DBM_CLEAR_METHODDEF    \
+    {"clear", _PyCFunction_CAST(_dbm_dbm_clear), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, _dbm_dbm_clear__doc__},
+
+static PyObject *
+_dbm_dbm_clear_impl(dbmobject *self, PyTypeObject *cls);
+
+static PyObject *
+_dbm_dbm_clear(dbmobject *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    if (nargs) {
+        PyErr_SetString(PyExc_TypeError, "clear() takes no arguments");
+        return NULL;
+    }
+    return _dbm_dbm_clear_impl(self, cls);
+}
+
 PyDoc_STRVAR(dbmopen__doc__,
 "open($module, filename, flags=\'r\', mode=0o666, /)\n"
 "--\n"
@@ -190,7 +208,7 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 3) {
         goto skip_optional;
     }
-    mode = _PyLong_AsInt(args[2]);
+    mode = PyLong_AsInt(args[2]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -200,4 +218,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=28dcf736654137c2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=96fdd4bd7bd256c5 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_elementtree.c.h b/Modules/clinic/_elementtree.c.h
index a0bc751ca21ee8..02375c8a61e73e 100644
--- a/Modules/clinic/_elementtree.c.h
+++ b/Modules/clinic/_elementtree.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_elementtree_Element_append__doc__,
 "append($self, subelement, /)\n"
@@ -1218,4 +1219,4 @@ _elementtree_XMLParser__setevents(XMLParserObject *self, PyObject *const *args,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=40767b1a98e54b60 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8fdaa17d3262800a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_functoolsmodule.c.h b/Modules/clinic/_functoolsmodule.c.h
index 9c79e6430413bf..e98984dc4d3a09 100644
--- a/Modules/clinic/_functoolsmodule.c.h
+++ b/Modules/clinic/_functoolsmodule.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_functools_cmp_to_key__doc__,
 "cmp_to_key($module, /, mycmp)\n"
@@ -81,7 +82,13 @@ _functools__lru_cache_wrapper_cache_info_impl(PyObject *self);
 static PyObject *
 _functools__lru_cache_wrapper_cache_info(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return _functools__lru_cache_wrapper_cache_info_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _functools__lru_cache_wrapper_cache_info_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_functools__lru_cache_wrapper_cache_clear__doc__,
@@ -99,6 +106,12 @@ _functools__lru_cache_wrapper_cache_clear_impl(PyObject *self);
 static PyObject *
 _functools__lru_cache_wrapper_cache_clear(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return _functools__lru_cache_wrapper_cache_clear_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _functools__lru_cache_wrapper_cache_clear_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
-/*[clinic end generated code: output=7e7f3bcf9ed61f23 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=755265bb6d5ea751 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_gdbmmodule.c.h b/Modules/clinic/_gdbmmodule.c.h
index 5c6aeeee7789f7..c7164e519d0e7d 100644
--- a/Modules/clinic/_gdbmmodule.c.h
+++ b/Modules/clinic/_gdbmmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_gdbm_gdbm_get__doc__,
 "get($self, key, default=None, /)\n"
@@ -247,6 +243,28 @@ _gdbm_gdbm_sync(gdbmobject *self, PyTypeObject *cls, PyObject *const *args, Py_s
     return _gdbm_gdbm_sync_impl(self, cls);
 }
 
+PyDoc_STRVAR(_gdbm_gdbm_clear__doc__,
+"clear($self, /)\n"
+"--\n"
+"\n"
+"Remove all items from the database.");
+
+#define _GDBM_GDBM_CLEAR_METHODDEF    \
+    {"clear", _PyCFunction_CAST(_gdbm_gdbm_clear), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, _gdbm_gdbm_clear__doc__},
+
+static PyObject *
+_gdbm_gdbm_clear_impl(gdbmobject *self, PyTypeObject *cls);
+
+static PyObject *
+_gdbm_gdbm_clear(gdbmobject *self, PyTypeObject *cls, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    if (nargs) {
+        PyErr_SetString(PyExc_TypeError, "clear() takes no arguments");
+        return NULL;
+    }
+    return _gdbm_gdbm_clear_impl(self, cls);
+}
+
 PyDoc_STRVAR(dbmopen__doc__,
 "open($module, filename, flags=\'r\', mode=0o666, /)\n"
 "--\n"
@@ -312,7 +330,7 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 3) {
         goto skip_optional;
     }
-    mode = _PyLong_AsInt(args[2]);
+    mode = PyLong_AsInt(args[2]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -322,4 +340,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c6e721d82335adb3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c5ee922363d5a81f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_hashopenssl.c.h b/Modules/clinic/_hashopenssl.c.h
index fb61a444018dbb..58650dff288444 100644
--- a/Modules/clinic/_hashopenssl.c.h
+++ b/Modules/clinic/_hashopenssl.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(EVP_copy__doc__,
 "copy($self, /)\n"
@@ -1289,17 +1290,9 @@ pbkdf2_hmac(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (PyObject_GetBuffer(args[1], &password, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&password, 'C')) {
-        _PyArg_BadArgument("pbkdf2_hmac", "argument 'password'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[2], &salt, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&salt, 'C')) {
-        _PyArg_BadArgument("pbkdf2_hmac", "argument 'salt'", "contiguous buffer", args[2]);
-        goto exit;
-    }
     iterations = PyLong_AsLong(args[3]);
     if (iterations == -1 && PyErr_Occurred()) {
         goto exit;
@@ -1387,10 +1380,6 @@ _hashlib_scrypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &password, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&password, 'C')) {
-        _PyArg_BadArgument("scrypt", "argument 'password'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
@@ -1398,10 +1387,6 @@ _hashlib_scrypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         if (PyObject_GetBuffer(args[1], &salt, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&salt, 'C')) {
-            _PyArg_BadArgument("scrypt", "argument 'salt'", "contiguous buffer", args[1]);
-            goto exit;
-        }
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -1521,17 +1506,9 @@ _hashlib_hmac_singleshot(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &key, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&key, 'C')) {
-        _PyArg_BadArgument("hmac_digest", "argument 'key'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &msg, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&msg, 'C')) {
-        _PyArg_BadArgument("hmac_digest", "argument 'msg'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     digest = args[2];
     return_value = _hashlib_hmac_singleshot_impl(module, &key, &msg, digest);
 
@@ -1603,10 +1580,6 @@ _hashlib_hmac_new(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
     if (PyObject_GetBuffer(args[0], &key, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&key, 'C')) {
-        _PyArg_BadArgument("hmac_new", "argument 'key'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -1851,4 +1824,4 @@ _hashlib_compare_digest(PyObject *module, PyObject *const *args, Py_ssize_t narg
 #ifndef _HASHLIB_SCRYPT_METHODDEF
     #define _HASHLIB_SCRYPT_METHODDEF
 #endif /* !defined(_HASHLIB_SCRYPT_METHODDEF) */
-/*[clinic end generated code: output=b339e255db698147 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b7eddeb3d6ccdeec input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_heapqmodule.c.h b/Modules/clinic/_heapqmodule.c.h
index 3ee3f51702fa30..9046307990773b 100644
--- a/Modules/clinic/_heapqmodule.c.h
+++ b/Modules/clinic/_heapqmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_heapq_heappush__doc__,
 "heappush($module, heap, item, /)\n"
@@ -271,4 +267,4 @@ _heapq__heapify_max(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=29e99a48c57f82bb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=05f2afdf3bc54c9d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_localemodule.c.h b/Modules/clinic/_localemodule.c.h
index e6b99962d15fc8..5e0880b0d0bb4c 100644
--- a/Modules/clinic/_localemodule.c.h
+++ b/Modules/clinic/_localemodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_locale_setlocale__doc__,
 "setlocale($module, category, locale=<unrepresentable>, /)\n"
@@ -30,7 +26,7 @@ _locale_setlocale(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("setlocale", nargs, 1, 2)) {
         goto exit;
     }
-    category = _PyLong_AsInt(args[0]);
+    category = PyLong_AsInt(args[0]);
     if (category == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -108,17 +104,11 @@ _locale_strcoll(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("strcoll", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     os1 = args[0];
     if (!PyUnicode_Check(args[1])) {
         _PyArg_BadArgument("strcoll", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     os2 = args[1];
     return_value = _locale_strcoll_impl(module, os1, os2);
 
@@ -152,9 +142,6 @@ _locale_strxfrm(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("strxfrm", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     str = arg;
     return_value = _locale_strxfrm_impl(module, str);
 
@@ -205,7 +192,7 @@ _locale_nl_langinfo(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int item;
 
-    item = _PyLong_AsInt(arg);
+    item = PyLong_AsInt(arg);
     if (item == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -382,7 +369,7 @@ _locale_dcgettext(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
-    category = _PyLong_AsInt(args[2]);
+    category = PyLong_AsInt(args[2]);
     if (category == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -608,4 +595,4 @@ _locale_getencoding(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef _LOCALE_BIND_TEXTDOMAIN_CODESET_METHODDEF
     #define _LOCALE_BIND_TEXTDOMAIN_CODESET_METHODDEF
 #endif /* !defined(_LOCALE_BIND_TEXTDOMAIN_CODESET_METHODDEF) */
-/*[clinic end generated code: output=406842c3441559cb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=034a3c219466d207 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lsprof.c.h b/Modules/clinic/_lsprof.c.h
index 5fcc7ae02e3b00..dfc003eb54774c 100644
--- a/Modules/clinic/_lsprof.c.h
+++ b/Modules/clinic/_lsprof.c.h
@@ -2,12 +2,6 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
 PyDoc_STRVAR(_lsprof_Profiler_getstats__doc__,
 "getstats($self, /)\n"
 "--\n"
@@ -51,4 +45,4 @@ _lsprof_Profiler_getstats(ProfilerObject *self, PyTypeObject *cls, PyObject *con
     }
     return _lsprof_Profiler_getstats_impl(self, cls);
 }
-/*[clinic end generated code: output=7425d3481349629a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0615a53cce828f06 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lzmamodule.c.h b/Modules/clinic/_lzmamodule.c.h
index 9b396a56683921..51fab5eab3f7dc 100644
--- a/Modules/clinic/_lzmamodule.c.h
+++ b/Modules/clinic/_lzmamodule.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(_lzma_LZMACompressor_compress__doc__,
 "compress($self, data, /)\n"
@@ -34,10 +35,6 @@ _lzma_LZMACompressor_compress(Compressor *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _lzma_LZMACompressor_compress_impl(self, &data);
 
 exit:
@@ -138,10 +135,6 @@ _lzma_LZMADecompressor_decompress(Decompressor *self, PyObject *const *args, Py_
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -241,7 +234,7 @@ _lzma_LZMADecompressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         goto skip_optional_pos;
     }
     if (fastargs[0]) {
-        format = _PyLong_AsInt(fastargs[0]);
+        format = PyLong_AsInt(fastargs[0]);
         if (format == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -283,7 +276,7 @@ _lzma_is_check_supported(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int check_id;
 
-    check_id = _PyLong_AsInt(arg);
+    check_id = PyLong_AsInt(arg);
     if (check_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -324,10 +317,6 @@ _lzma__decode_filter_properties(PyObject *module, PyObject *const *args, Py_ssiz
     if (PyObject_GetBuffer(args[1], &encoded_props, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&encoded_props, 'C')) {
-        _PyArg_BadArgument("_decode_filter_properties", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _lzma__decode_filter_properties_impl(module, filter_id, &encoded_props);
 
 exit:
@@ -338,4 +327,4 @@ _lzma__decode_filter_properties(PyObject *module, PyObject *const *args, Py_ssiz
 
     return return_value;
 }
-/*[clinic end generated code: output=96c1fbdada1ef232 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5e79c05ace76dc96 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_opcode.c.h b/Modules/clinic/_opcode.c.h
index 3bd3ba02387435..c7fd0f9f8a7420 100644
--- a/Modules/clinic/_opcode.c.h
+++ b/Modules/clinic/_opcode.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_opcode_stack_effect__doc__,
 "stack_effect($module, opcode, oparg=None, /, *, jump=None)\n"
@@ -61,7 +61,7 @@ _opcode_stack_effect(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     if (!args) {
         goto exit;
     }
-    opcode = _PyLong_AsInt(args[0]);
+    opcode = PyLong_AsInt(args[0]);
     if (opcode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -86,6 +86,515 @@ _opcode_stack_effect(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     return return_value;
 }
 
+PyDoc_STRVAR(_opcode_is_valid__doc__,
+"is_valid($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if opcode is valid, False otherwise.");
+
+#define _OPCODE_IS_VALID_METHODDEF    \
+    {"is_valid", _PyCFunction_CAST(_opcode_is_valid), METH_FASTCALL|METH_KEYWORDS, _opcode_is_valid__doc__},
+
+static int
+_opcode_is_valid_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_is_valid(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "is_valid",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_is_valid_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_arg__doc__,
+"has_arg($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode uses its oparg, False otherwise.");
+
+#define _OPCODE_HAS_ARG_METHODDEF    \
+    {"has_arg", _PyCFunction_CAST(_opcode_has_arg), METH_FASTCALL|METH_KEYWORDS, _opcode_has_arg__doc__},
+
+static int
+_opcode_has_arg_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_arg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_arg",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_arg_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_const__doc__,
+"has_const($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode accesses a constant, False otherwise.");
+
+#define _OPCODE_HAS_CONST_METHODDEF    \
+    {"has_const", _PyCFunction_CAST(_opcode_has_const), METH_FASTCALL|METH_KEYWORDS, _opcode_has_const__doc__},
+
+static int
+_opcode_has_const_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_const(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_const",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_const_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_name__doc__,
+"has_name($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode accesses an attribute by name, False otherwise.");
+
+#define _OPCODE_HAS_NAME_METHODDEF    \
+    {"has_name", _PyCFunction_CAST(_opcode_has_name), METH_FASTCALL|METH_KEYWORDS, _opcode_has_name__doc__},
+
+static int
+_opcode_has_name_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_name(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_name",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_name_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_jump__doc__,
+"has_jump($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode has a jump target, False otherwise.");
+
+#define _OPCODE_HAS_JUMP_METHODDEF    \
+    {"has_jump", _PyCFunction_CAST(_opcode_has_jump), METH_FASTCALL|METH_KEYWORDS, _opcode_has_jump__doc__},
+
+static int
+_opcode_has_jump_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_jump(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_jump",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_jump_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_free__doc__,
+"has_free($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode accesses a free variable, False otherwise.\n"
+"\n"
+"Note that \'free\' in this context refers to names in the current scope\n"
+"that are referenced by inner scopes or names in outer scopes that are\n"
+"referenced from this scope. It does not include references to global\n"
+"or builtin scopes.");
+
+#define _OPCODE_HAS_FREE_METHODDEF    \
+    {"has_free", _PyCFunction_CAST(_opcode_has_free), METH_FASTCALL|METH_KEYWORDS, _opcode_has_free__doc__},
+
+static int
+_opcode_has_free_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_free(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_free",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_free_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_local__doc__,
+"has_local($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode accesses a local variable, False otherwise.");
+
+#define _OPCODE_HAS_LOCAL_METHODDEF    \
+    {"has_local", _PyCFunction_CAST(_opcode_has_local), METH_FASTCALL|METH_KEYWORDS, _opcode_has_local__doc__},
+
+static int
+_opcode_has_local_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_local(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_local",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_local_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_opcode_has_exc__doc__,
+"has_exc($module, /, opcode)\n"
+"--\n"
+"\n"
+"Return True if the opcode sets an exception handler, False otherwise.");
+
+#define _OPCODE_HAS_EXC_METHODDEF    \
+    {"has_exc", _PyCFunction_CAST(_opcode_has_exc), METH_FASTCALL|METH_KEYWORDS, _opcode_has_exc__doc__},
+
+static int
+_opcode_has_exc_impl(PyObject *module, int opcode);
+
+static PyObject *
+_opcode_has_exc(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(opcode), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"opcode", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "has_exc",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    int opcode;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    opcode = PyLong_AsInt(args[0]);
+    if (opcode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = _opcode_has_exc_impl(module, opcode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
 PyDoc_STRVAR(_opcode_get_specialization_stats__doc__,
 "get_specialization_stats($module, /)\n"
 "--\n"
@@ -103,4 +612,60 @@ _opcode_get_specialization_stats(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _opcode_get_specialization_stats_impl(module);
 }
-/*[clinic end generated code: output=21e3d53a659c651a input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_opcode_get_nb_ops__doc__,
+"get_nb_ops($module, /)\n"
+"--\n"
+"\n"
+"Return array of symbols of binary ops.\n"
+"\n"
+"Indexed by the BINARY_OP oparg value.");
+
+#define _OPCODE_GET_NB_OPS_METHODDEF    \
+    {"get_nb_ops", (PyCFunction)_opcode_get_nb_ops, METH_NOARGS, _opcode_get_nb_ops__doc__},
+
+static PyObject *
+_opcode_get_nb_ops_impl(PyObject *module);
+
+static PyObject *
+_opcode_get_nb_ops(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _opcode_get_nb_ops_impl(module);
+}
+
+PyDoc_STRVAR(_opcode_get_intrinsic1_descs__doc__,
+"get_intrinsic1_descs($module, /)\n"
+"--\n"
+"\n"
+"Return a list of names of the unary intrinsics.");
+
+#define _OPCODE_GET_INTRINSIC1_DESCS_METHODDEF    \
+    {"get_intrinsic1_descs", (PyCFunction)_opcode_get_intrinsic1_descs, METH_NOARGS, _opcode_get_intrinsic1_descs__doc__},
+
+static PyObject *
+_opcode_get_intrinsic1_descs_impl(PyObject *module);
+
+static PyObject *
+_opcode_get_intrinsic1_descs(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _opcode_get_intrinsic1_descs_impl(module);
+}
+
+PyDoc_STRVAR(_opcode_get_intrinsic2_descs__doc__,
+"get_intrinsic2_descs($module, /)\n"
+"--\n"
+"\n"
+"Return a list of names of the binary intrinsics.");
+
+#define _OPCODE_GET_INTRINSIC2_DESCS_METHODDEF    \
+    {"get_intrinsic2_descs", (PyCFunction)_opcode_get_intrinsic2_descs, METH_NOARGS, _opcode_get_intrinsic2_descs__doc__},
+
+static PyObject *
+_opcode_get_intrinsic2_descs_impl(PyObject *module);
+
+static PyObject *
+_opcode_get_intrinsic2_descs(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _opcode_get_intrinsic2_descs_impl(module);
+}
+/*[clinic end generated code: output=a1052bb1deffb7f2 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_operator.c.h b/Modules/clinic/_operator.c.h
index b68e6e0144a586..08615d690922a1 100644
--- a/Modules/clinic/_operator.c.h
+++ b/Modules/clinic/_operator.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_operator_truth__doc__,
 "truth($module, a, /)\n"
@@ -1492,4 +1489,4 @@ _operator__compare_digest(PyObject *module, PyObject *const *args, Py_ssize_t na
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=227cbcfed44f736e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ddbba2cd943571eb input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_pickle.c.h b/Modules/clinic/_pickle.c.h
index 539acc34a05cc1..932ace190e6059 100644
--- a/Modules/clinic/_pickle.c.h
+++ b/Modules/clinic/_pickle.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_pickle_Pickler_clear_memo__doc__,
 "clear_memo($self, /)\n"
@@ -1034,4 +1034,4 @@ _pickle_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=a0e04b85e7bae626 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7f0564b5fb5410a8 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_posixsubprocess.c.h b/Modules/clinic/_posixsubprocess.c.h
index f08878cf668908..dd7644de6b7534 100644
--- a/Modules/clinic/_posixsubprocess.c.h
+++ b/Modules/clinic/_posixsubprocess.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(subprocess_fork_exec__doc__,
 "fork_exec($module, args, executable_list, close_fds, pass_fds, cwd,\n"
@@ -98,35 +94,35 @@ subprocess_fork_exec(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     py_fds_to_keep = args[3];
     cwd_obj = args[4];
     env_list = args[5];
-    p2cread = _PyLong_AsInt(args[6]);
+    p2cread = PyLong_AsInt(args[6]);
     if (p2cread == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    p2cwrite = _PyLong_AsInt(args[7]);
+    p2cwrite = PyLong_AsInt(args[7]);
     if (p2cwrite == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    c2pread = _PyLong_AsInt(args[8]);
+    c2pread = PyLong_AsInt(args[8]);
     if (c2pread == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    c2pwrite = _PyLong_AsInt(args[9]);
+    c2pwrite = PyLong_AsInt(args[9]);
     if (c2pwrite == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    errread = _PyLong_AsInt(args[10]);
+    errread = PyLong_AsInt(args[10]);
     if (errread == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    errwrite = _PyLong_AsInt(args[11]);
+    errwrite = PyLong_AsInt(args[11]);
     if (errwrite == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    errpipe_read = _PyLong_AsInt(args[12]);
+    errpipe_read = PyLong_AsInt(args[12]);
     if (errpipe_read == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    errpipe_write = _PyLong_AsInt(args[13]);
+    errpipe_write = PyLong_AsInt(args[13]);
     if (errpipe_write == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -145,7 +141,7 @@ subprocess_fork_exec(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     gid_object = args[17];
     extra_groups_packed = args[18];
     uid_object = args[19];
-    child_umask = _PyLong_AsInt(args[20]);
+    child_umask = PyLong_AsInt(args[20]);
     if (child_umask == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -159,4 +155,4 @@ subprocess_fork_exec(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=46d71e86845c93d7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=48555f5965a871be input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_queuemodule.c.h b/Modules/clinic/_queuemodule.c.h
index 94fb59a5b17a49..8e2a430835e35f 100644
--- a/Modules/clinic/_queuemodule.c.h
+++ b/Modules/clinic/_queuemodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 
 PyDoc_STRVAR(simplequeue_new__doc__,
 "SimpleQueue()\n"
@@ -331,4 +331,4 @@ _queue_SimpleQueue_qsize(simplequeueobject *self, PyObject *Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9a72a8d1b5767f6a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=457310b20cb61cf8 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_randommodule.c.h b/Modules/clinic/_randommodule.c.h
index ec8531ce006649..6193acac67e7ac 100644
--- a/Modules/clinic/_randommodule.c.h
+++ b/Modules/clinic/_randommodule.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_random_Random_random__doc__,
 "random($self, /)\n"
@@ -23,7 +20,13 @@ _random_Random_random_impl(RandomObject *self);
 static PyObject *
 _random_Random_random(RandomObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return _random_Random_random_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _random_Random_random_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_random_Random_seed__doc__,
@@ -55,7 +58,9 @@ _random_Random_seed(RandomObject *self, PyObject *const *args, Py_ssize_t nargs)
     }
     n = args[0];
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _random_Random_seed_impl(self, n);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -76,7 +81,13 @@ _random_Random_getstate_impl(RandomObject *self);
 static PyObject *
 _random_Random_getstate(RandomObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return _random_Random_getstate_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _random_Random_getstate_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_random_Random_setstate__doc__,
@@ -88,6 +99,21 @@ PyDoc_STRVAR(_random_Random_setstate__doc__,
 #define _RANDOM_RANDOM_SETSTATE_METHODDEF    \
     {"setstate", (PyCFunction)_random_Random_setstate, METH_O, _random_Random_setstate__doc__},
 
+static PyObject *
+_random_Random_setstate_impl(RandomObject *self, PyObject *state);
+
+static PyObject *
+_random_Random_setstate(RandomObject *self, PyObject *state)
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _random_Random_setstate_impl(self, state);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_random_Random_getrandbits__doc__,
 "getrandbits($self, k, /)\n"
 "--\n"
@@ -106,13 +132,15 @@ _random_Random_getrandbits(RandomObject *self, PyObject *arg)
     PyObject *return_value = NULL;
     int k;
 
-    k = _PyLong_AsInt(arg);
+    k = PyLong_AsInt(arg);
     if (k == -1 && PyErr_Occurred()) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _random_Random_getrandbits_impl(self, k);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=bc17406a886824fc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bf49ece1d341b1b6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_ssl.c.h b/Modules/clinic/_ssl.c.h
index 9f967ddc8e3061..19c0f619b92f45 100644
--- a/Modules/clinic/_ssl.c.h
+++ b/Modules/clinic/_ssl.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_ssl__SSLSocket_do_handshake__doc__,
 "do_handshake($self, /)\n"
@@ -236,10 +237,6 @@ _ssl__SSLSocket_write(PySSLSocket *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _ssl__SSLSocket_write_impl(self, &b);
 
 exit:
@@ -445,7 +442,7 @@ _ssl__SSLContext(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     if (!_PyArg_CheckPositional("_SSLContext", PyTuple_GET_SIZE(args), 1, 1)) {
         goto exit;
     }
-    proto_version = _PyLong_AsInt(PyTuple_GET_ITEM(args, 0));
+    proto_version = PyLong_AsInt(PyTuple_GET_ITEM(args, 0));
     if (proto_version == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -529,10 +526,6 @@ _ssl__SSLContext__set_alpn_protocols(PySSLContext *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &protos, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&protos, 'C')) {
-        _PyArg_BadArgument("_set_alpn_protocols", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _ssl__SSLContext__set_alpn_protocols_impl(self, &protos);
 
 exit:
@@ -1021,6 +1014,141 @@ _ssl__SSLContext_get_ca_certs(PySSLContext *self, PyObject *const *args, Py_ssiz
     return return_value;
 }
 
+PyDoc_STRVAR(_ssl__SSLContext_set_psk_client_callback__doc__,
+"set_psk_client_callback($self, /, callback)\n"
+"--\n"
+"\n");
+
+#define _SSL__SSLCONTEXT_SET_PSK_CLIENT_CALLBACK_METHODDEF    \
+    {"set_psk_client_callback", _PyCFunction_CAST(_ssl__SSLContext_set_psk_client_callback), METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_set_psk_client_callback__doc__},
+
+static PyObject *
+_ssl__SSLContext_set_psk_client_callback_impl(PySSLContext *self,
+                                              PyObject *callback);
+
+static PyObject *
+_ssl__SSLContext_set_psk_client_callback(PySSLContext *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(callback), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"callback", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "set_psk_client_callback",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject *callback;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    callback = args[0];
+    return_value = _ssl__SSLContext_set_psk_client_callback_impl(self, callback);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLContext_set_psk_server_callback__doc__,
+"set_psk_server_callback($self, /, callback, identity_hint=None)\n"
+"--\n"
+"\n");
+
+#define _SSL__SSLCONTEXT_SET_PSK_SERVER_CALLBACK_METHODDEF    \
+    {"set_psk_server_callback", _PyCFunction_CAST(_ssl__SSLContext_set_psk_server_callback), METH_FASTCALL|METH_KEYWORDS, _ssl__SSLContext_set_psk_server_callback__doc__},
+
+static PyObject *
+_ssl__SSLContext_set_psk_server_callback_impl(PySSLContext *self,
+                                              PyObject *callback,
+                                              const char *identity_hint);
+
+static PyObject *
+_ssl__SSLContext_set_psk_server_callback(PySSLContext *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(callback), &_Py_ID(identity_hint), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"callback", "identity_hint", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "set_psk_server_callback",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *callback;
+    const char *identity_hint = NULL;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    callback = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1] == Py_None) {
+        identity_hint = NULL;
+    }
+    else if (PyUnicode_Check(args[1])) {
+        Py_ssize_t identity_hint_length;
+        identity_hint = PyUnicode_AsUTF8AndSize(args[1], &identity_hint_length);
+        if (identity_hint == NULL) {
+            goto exit;
+        }
+        if (strlen(identity_hint) != (size_t)identity_hint_length) {
+            PyErr_SetString(PyExc_ValueError, "embedded null character");
+            goto exit;
+        }
+    }
+    else {
+        _PyArg_BadArgument("set_psk_server_callback", "argument 'identity_hint'", "str or None", args[1]);
+        goto exit;
+    }
+skip_optional_pos:
+    return_value = _ssl__SSLContext_set_psk_server_callback_impl(self, callback, identity_hint);
+
+exit:
+    return return_value;
+}
+
 static PyObject *
 _ssl_MemoryBIO_impl(PyTypeObject *type);
 
@@ -1073,7 +1201,7 @@ _ssl_MemoryBIO_read(PySSLMemoryBIO *self, PyObject *const *args, Py_ssize_t narg
     if (nargs < 1) {
         goto skip_optional;
     }
-    len = _PyLong_AsInt(args[0]);
+    len = PyLong_AsInt(args[0]);
     if (len == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1107,10 +1235,6 @@ _ssl_MemoryBIO_write(PySSLMemoryBIO *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _ssl_MemoryBIO_write_impl(self, &b);
 
 exit:
@@ -1179,10 +1303,6 @@ _ssl_RAND_add(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         if (PyObject_GetBuffer(args[0], &view, PyBUF_SIMPLE) != 0) {
             goto exit;
         }
-        if (!PyBuffer_IsContiguous(&view, 'C')) {
-            _PyArg_BadArgument("RAND_add", "argument 1", "contiguous buffer", args[0]);
-            goto exit;
-        }
     }
     if (PyFloat_CheckExact(args[1])) {
         entropy = PyFloat_AS_DOUBLE(args[1]);
@@ -1223,7 +1343,7 @@ _ssl_RAND_bytes(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int n;
 
-    n = _PyLong_AsInt(arg);
+    n = PyLong_AsInt(arg);
     if (n == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1372,7 +1492,7 @@ _ssl_nid2obj(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int nid;
 
-    nid = _PyLong_AsInt(arg);
+    nid = PyLong_AsInt(arg);
     if (nid == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1542,4 +1662,4 @@ _ssl_enum_crls(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
 #ifndef _SSL_ENUM_CRLS_METHODDEF
     #define _SSL_ENUM_CRLS_METHODDEF
 #endif /* !defined(_SSL_ENUM_CRLS_METHODDEF) */
-/*[clinic end generated code: output=4d9b81fa81f520f0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6342ea0062ab16c7 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_statisticsmodule.c.h b/Modules/clinic/_statisticsmodule.c.h
index 4dedadd2939ad6..653a2138aaad70 100644
--- a/Modules/clinic/_statisticsmodule.c.h
+++ b/Modules/clinic/_statisticsmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_statistics__normal_dist_inv_cdf__doc__,
 "_normal_dist_inv_cdf($module, p, mu, sigma, /)\n"
@@ -71,4 +67,4 @@ _statistics__normal_dist_inv_cdf(PyObject *module, PyObject *const *args, Py_ssi
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6899dc752cc6b457 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e7cead17f9f3e19f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_struct.c.h b/Modules/clinic/_struct.c.h
index c3cf179ed4c040..1a07532bdd75ad 100644
--- a/Modules/clinic/_struct.c.h
+++ b/Modules/clinic/_struct.c.h
@@ -3,12 +3,13 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
-
-PyDoc_STRVAR(Struct__doc__,
+PyDoc_STRVAR(Struct___init____doc__,
 "Struct(format)\n"
 "--\n"
 "\n"
@@ -19,13 +20,13 @@ PyDoc_STRVAR(Struct__doc__,
 "\n"
 "See help(struct) for more on format strings.");
 
-static PyObject *
-Struct_impl(PyTypeObject *type, PyObject *format);
+static int
+Struct___init___impl(PyStructObject *self, PyObject *format);
 
-static PyObject *
-Struct(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+static int
+Struct___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 {
-    PyObject *return_value = NULL;
+    int return_value = -1;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
     #define NUM_KEYWORDS 1
@@ -61,7 +62,7 @@ Struct(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         goto exit;
     }
     format = fastargs[0];
-    return_value = Struct_impl(type, format);
+    return_value = Struct___init___impl((PyStructObject *)self, format);
 
 exit:
     return return_value;
@@ -93,10 +94,6 @@ Struct_unpack(PyStructObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = Struct_unpack_impl(self, &buffer);
 
 exit:
@@ -169,10 +166,6 @@ Struct_unpack_from(PyStructObject *self, PyObject *const *args, Py_ssize_t nargs
     if (PyObject_GetBuffer(args[0], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack_from", "argument 'buffer'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -299,10 +292,6 @@ unpack(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[1], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = unpack_impl(module, s_object, &buffer);
 
 exit:
@@ -378,10 +367,6 @@ unpack_from(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (PyObject_GetBuffer(args[1], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("unpack_from", "argument 'buffer'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -451,4 +436,4 @@ iter_unpack(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 
     return return_value;
 }
-/*[clinic end generated code: output=f3d6e06f80368998 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=67bd299e5d72fee0 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_sysconfig.c.h b/Modules/clinic/_sysconfig.c.h
new file mode 100644
index 00000000000000..eb3d396298bb21
--- /dev/null
+++ b/Modules/clinic/_sysconfig.c.h
@@ -0,0 +1,22 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(_sysconfig_config_vars__doc__,
+"config_vars($module, /)\n"
+"--\n"
+"\n"
+"Returns a dictionary containing build variables intended to be exposed by sysconfig.");
+
+#define _SYSCONFIG_CONFIG_VARS_METHODDEF    \
+    {"config_vars", (PyCFunction)_sysconfig_config_vars, METH_NOARGS, _sysconfig_config_vars__doc__},
+
+static PyObject *
+_sysconfig_config_vars_impl(PyObject *module);
+
+static PyObject *
+_sysconfig_config_vars(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _sysconfig_config_vars_impl(module);
+}
+/*[clinic end generated code: output=25d395cf02eced1f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic.c.h b/Modules/clinic/_testclinic.c.h
index cc69f5c3d2fe9f..fea30e778381de 100644
--- a/Modules/clinic/_testclinic.c.h
+++ b/Modules/clinic/_testclinic.c.h
@@ -3,10 +3,12 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_long.h"          // _PyLong_UnsignedShort_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+#include "pycore_runtime.h"       // _Py_ID()
 
 PyDoc_STRVAR(test_empty_function__doc__,
 "test_empty_function($module, /)\n"
@@ -135,9 +137,6 @@ unicode_converter(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("unicode_converter", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     a = arg;
     return_value = unicode_converter_impl(module, a);
 
@@ -184,7 +183,7 @@ bool_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 3) {
         goto skip_optional;
     }
-    c = _PyLong_AsInt(args[2]);
+    c = PyLong_AsInt(args[2]);
     if (c == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -630,14 +629,14 @@ int_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 1) {
         goto skip_optional;
     }
-    a = _PyLong_AsInt(args[0]);
+    a = PyLong_AsInt(args[0]);
     if (a == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (nargs < 2) {
         goto skip_optional;
     }
-    b = _PyLong_AsInt(args[1]);
+    b = PyLong_AsInt(args[1]);
     if (b == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -648,9 +647,6 @@ int_converter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("int_converter", "argument 3", "a unicode character", args[2]);
         goto exit;
     }
-    if (PyUnicode_READY(args[2])) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(args[2]) != 1) {
         _PyArg_BadArgument("int_converter", "argument 3", "a unicode character", args[2]);
         goto exit;
@@ -2818,6 +2814,76 @@ gh_99240_double_free(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     return return_value;
 }
 
+PyDoc_STRVAR(null_or_tuple_for_varargs__doc__,
+"null_or_tuple_for_varargs($module, /, name, *constraints,\n"
+"                          covariant=False)\n"
+"--\n"
+"\n"
+"See https://github.com/python/cpython/issues/110864");
+
+#define NULL_OR_TUPLE_FOR_VARARGS_METHODDEF    \
+    {"null_or_tuple_for_varargs", _PyCFunction_CAST(null_or_tuple_for_varargs), METH_FASTCALL|METH_KEYWORDS, null_or_tuple_for_varargs__doc__},
+
+static PyObject *
+null_or_tuple_for_varargs_impl(PyObject *module, PyObject *name,
+                               PyObject *constraints, int covariant);
+
+static PyObject *
+null_or_tuple_for_varargs(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), &_Py_ID(covariant), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", "covariant", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "null_or_tuple_for_varargs",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *name;
+    PyObject *constraints = NULL;
+    int covariant = 0;
+
+    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    name = args[0];
+    constraints = args[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    covariant = PyObject_IsTrue(args[2]);
+    if (covariant < 0) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    return_value = null_or_tuple_for_varargs_impl(module, name, constraints, covariant);
+
+exit:
+    Py_XDECREF(constraints);
+    return return_value;
+}
+
 PyDoc_STRVAR(clone_f1__doc__,
 "clone_f1($module, /, path)\n"
 "--\n"
@@ -3075,4 +3141,4 @@ clone_with_conv_f2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f58202a6e5df2d16 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=90743ac900d60f9f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic_depr.c.h b/Modules/clinic/_testclinic_depr.c.h
new file mode 100644
index 00000000000000..732c3810408399
--- /dev/null
+++ b/Modules/clinic/_testclinic_depr.c.h
@@ -0,0 +1,2396 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_gc.h"          // PyGC_Head
+#endif
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_long.h"          // _PyLong_UnsignedShort_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+#include "pycore_runtime.h"       // _Py_ID()
+
+PyDoc_STRVAR(depr_star_new__doc__,
+"DeprStarNew(a=None)\n"
+"--\n"
+"\n"
+"The deprecation message should use the class name instead of __new__.\n"
+"\n"
+"Note: Passing positional arguments to _testclinic.DeprStarNew() is\n"
+"deprecated. Parameter \'a\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+static PyObject *
+depr_star_new_impl(PyTypeObject *type, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprStarNew.__new__'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprStarNew.__new__'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprStarNew.__new__'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "DeprStarNew",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
+    PyObject *a = Py_None;
+
+    if (nargs == 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to _testclinic.DeprStarNew() is "
+                "deprecated. Parameter 'a' will become a keyword-only parameter "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 0, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    a = fastargs[0];
+skip_optional_pos:
+    return_value = depr_star_new_impl(type, a);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_new_clone__doc__,
+"cloned($self, /, a=None)\n"
+"--\n"
+"\n"
+"Note: Passing positional arguments to _testclinic.DeprStarNew.cloned()\n"
+"is deprecated. Parameter \'a\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_STAR_NEW_CLONE_METHODDEF    \
+    {"cloned", _PyCFunction_CAST(depr_star_new_clone), METH_FASTCALL|METH_KEYWORDS, depr_star_new_clone__doc__},
+
+static PyObject *
+depr_star_new_clone_impl(PyObject *type, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprStarNew.cloned'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprStarNew.cloned'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprStarNew.cloned'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_new_clone(PyObject *type, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "cloned",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *a = Py_None;
+
+    if (nargs == 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to _testclinic.DeprStarNew.cloned()"
+                " is deprecated. Parameter 'a' will become a keyword-only "
+                "parameter in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    a = args[0];
+skip_optional_pos:
+    return_value = depr_star_new_clone_impl(type, a);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_init__doc__,
+"DeprStarInit(a=None)\n"
+"--\n"
+"\n"
+"The deprecation message should use the class name instead of __init__.\n"
+"\n"
+"Note: Passing positional arguments to _testclinic.DeprStarInit() is\n"
+"deprecated. Parameter \'a\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+static int
+depr_star_init_impl(PyObject *self, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprStarInit.__init__'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprStarInit.__init__'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprStarInit.__init__'."
+#  endif
+#endif
+
+static int
+depr_star_init(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "DeprStarInit",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
+    PyObject *a = Py_None;
+
+    if (nargs == 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to _testclinic.DeprStarInit() is "
+                "deprecated. Parameter 'a' will become a keyword-only parameter "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 0, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    a = fastargs[0];
+skip_optional_pos:
+    return_value = depr_star_init_impl(self, a);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_init_clone__doc__,
+"cloned($self, /, a=None)\n"
+"--\n"
+"\n"
+"Note: Passing positional arguments to\n"
+"_testclinic.DeprStarInit.cloned() is deprecated. Parameter \'a\' will\n"
+"become a keyword-only parameter in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_INIT_CLONE_METHODDEF    \
+    {"cloned", _PyCFunction_CAST(depr_star_init_clone), METH_FASTCALL|METH_KEYWORDS, depr_star_init_clone__doc__},
+
+static PyObject *
+depr_star_init_clone_impl(PyObject *self, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprStarInit.cloned'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprStarInit.cloned'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprStarInit.cloned'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_init_clone(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "cloned",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *a = Py_None;
+
+    if (nargs == 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to "
+                "_testclinic.DeprStarInit.cloned() is deprecated. Parameter 'a' "
+                "will become a keyword-only parameter in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    a = args[0];
+skip_optional_pos:
+    return_value = depr_star_init_clone_impl(self, a);
+
+exit:
+    return return_value;
+}
+
+static int
+depr_star_init_noinline_impl(PyObject *self, PyObject *a, PyObject *b,
+                             PyObject *c, const char *d, Py_ssize_t d_length);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprStarInitNoInline.__init__'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprStarInitNoInline.__init__'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprStarInitNoInline.__init__'."
+#  endif
+#endif
+
+static int
+depr_star_init_noinline(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .format = "OO|O$s#:DeprStarInitNoInline",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    const char *d = "";
+    Py_ssize_t d_length;
+
+    if (nargs > 1 && nargs <= 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 1 positional argument to "
+                "_testclinic.DeprStarInitNoInline() is deprecated. Parameters 'b'"
+                " and 'c' will become keyword-only parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
+        &a, &b, &c, &d, &d_length)) {
+        goto exit;
+    }
+    return_value = depr_star_init_noinline_impl(self, a, b, c, d, d_length);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_new__doc__,
+"DeprKwdNew(a=None)\n"
+"--\n"
+"\n"
+"The deprecation message should use the class name instead of __new__.\n"
+"\n"
+"Note: Passing keyword argument \'a\' to _testclinic.DeprKwdNew() is\n"
+"deprecated. Parameter \'a\' will become positional-only in Python 3.14.\n"
+"");
+
+static PyObject *
+depr_kwd_new_impl(PyTypeObject *type, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprKwdNew.__new__'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprKwdNew.__new__'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprKwdNew.__new__'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "DeprKwdNew",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
+    PyObject *a = Py_None;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 0, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (kwargs && PyDict_GET_SIZE(kwargs) && nargs < 1 && fastargs[0]) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'a' to _testclinic.DeprKwdNew() is "
+                "deprecated. Parameter 'a' will become positional-only in Python "
+                "3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    a = fastargs[0];
+skip_optional_pos:
+    return_value = depr_kwd_new_impl(type, a);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_init__doc__,
+"DeprKwdInit(a=None)\n"
+"--\n"
+"\n"
+"The deprecation message should use the class name instead of __init__.\n"
+"\n"
+"Note: Passing keyword argument \'a\' to _testclinic.DeprKwdInit() is\n"
+"deprecated. Parameter \'a\' will become positional-only in Python 3.14.\n"
+"");
+
+static int
+depr_kwd_init_impl(PyObject *self, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprKwdInit.__init__'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprKwdInit.__init__'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprKwdInit.__init__'."
+#  endif
+#endif
+
+static int
+depr_kwd_init(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "DeprKwdInit",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
+    PyObject *a = Py_None;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 0, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (kwargs && PyDict_GET_SIZE(kwargs) && nargs < 1 && fastargs[0]) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'a' to _testclinic.DeprKwdInit() is "
+                "deprecated. Parameter 'a' will become positional-only in Python "
+                "3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    a = fastargs[0];
+skip_optional_pos:
+    return_value = depr_kwd_init_impl(self, a);
+
+exit:
+    return return_value;
+}
+
+static int
+depr_kwd_init_noinline_impl(PyObject *self, PyObject *a, PyObject *b,
+                            PyObject *c, const char *d, Py_ssize_t d_length);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of '_testclinic.DeprKwdInitNoInline.__init__'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of '_testclinic.DeprKwdInitNoInline.__init__'.")
+#  else
+#    warning "Update the clinic input of '_testclinic.DeprKwdInitNoInline.__init__'."
+#  endif
+#endif
+
+static int
+depr_kwd_init_noinline(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .format = "OO|Os#:DeprKwdInitNoInline",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    const char *d = "";
+    Py_ssize_t d_length;
+
+    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
+        &a, &b, &c, &d, &d_length)) {
+        goto exit;
+    }
+    if (kwargs && PyDict_GET_SIZE(kwargs) && ((nargs < 2) || (nargs < 3 && PyDict_Contains(kwargs, &_Py_ID(c))))) {
+        if (PyErr_Occurred()) { // PyDict_Contains() above can fail
+            goto exit;
+        }
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b' and 'c' to "
+                "_testclinic.DeprKwdInitNoInline() is deprecated. Parameters 'b' "
+                "and 'c' will become positional-only in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    return_value = depr_kwd_init_noinline_impl(self, a, b, c, d, d_length);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos0_len1__doc__,
+"depr_star_pos0_len1($module, /, a)\n"
+"--\n"
+"\n"
+"Note: Passing positional arguments to depr_star_pos0_len1() is\n"
+"deprecated. Parameter \'a\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS0_LEN1_METHODDEF    \
+    {"depr_star_pos0_len1", _PyCFunction_CAST(depr_star_pos0_len1), METH_FASTCALL|METH_KEYWORDS, depr_star_pos0_len1__doc__},
+
+static PyObject *
+depr_star_pos0_len1_impl(PyObject *module, PyObject *a);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos0_len1'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos0_len1'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos0_len1'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos0_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos0_len1",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject *a;
+
+    if (nargs == 1) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to depr_star_pos0_len1() is "
+                "deprecated. Parameter 'a' will become a keyword-only parameter "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    return_value = depr_star_pos0_len1_impl(module, a);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos0_len2__doc__,
+"depr_star_pos0_len2($module, /, a, b)\n"
+"--\n"
+"\n"
+"Note: Passing positional arguments to depr_star_pos0_len2() is\n"
+"deprecated. Parameters \'a\' and \'b\' will become keyword-only parameters\n"
+"in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS0_LEN2_METHODDEF    \
+    {"depr_star_pos0_len2", _PyCFunction_CAST(depr_star_pos0_len2), METH_FASTCALL|METH_KEYWORDS, depr_star_pos0_len2__doc__},
+
+static PyObject *
+depr_star_pos0_len2_impl(PyObject *module, PyObject *a, PyObject *b);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos0_len2'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos0_len2'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos0_len2'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos0_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos0_len2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *b;
+
+    if (nargs > 0 && nargs <= 2) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to depr_star_pos0_len2() is "
+                "deprecated. Parameters 'a' and 'b' will become keyword-only "
+                "parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    return_value = depr_star_pos0_len2_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos0_len3_with_kwd__doc__,
+"depr_star_pos0_len3_with_kwd($module, /, a, b, c, *, d)\n"
+"--\n"
+"\n"
+"Note: Passing positional arguments to depr_star_pos0_len3_with_kwd()\n"
+"is deprecated. Parameters \'a\', \'b\' and \'c\' will become keyword-only\n"
+"parameters in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS0_LEN3_WITH_KWD_METHODDEF    \
+    {"depr_star_pos0_len3_with_kwd", _PyCFunction_CAST(depr_star_pos0_len3_with_kwd), METH_FASTCALL|METH_KEYWORDS, depr_star_pos0_len3_with_kwd__doc__},
+
+static PyObject *
+depr_star_pos0_len3_with_kwd_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c, PyObject *d);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos0_len3_with_kwd'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos0_len3_with_kwd'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos0_len3_with_kwd'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos0_len3_with_kwd(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos0_len3_with_kwd",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+
+    if (nargs > 0 && nargs <= 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing positional arguments to depr_star_pos0_len3_with_kwd() "
+                "is deprecated. Parameters 'a', 'b' and 'c' will become "
+                "keyword-only parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    return_value = depr_star_pos0_len3_with_kwd_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos1_len1_opt__doc__,
+"depr_star_pos1_len1_opt($module, /, a, b=None)\n"
+"--\n"
+"\n"
+"Note: Passing 2 positional arguments to depr_star_pos1_len1_opt() is\n"
+"deprecated. Parameter \'b\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS1_LEN1_OPT_METHODDEF    \
+    {"depr_star_pos1_len1_opt", _PyCFunction_CAST(depr_star_pos1_len1_opt), METH_FASTCALL|METH_KEYWORDS, depr_star_pos1_len1_opt__doc__},
+
+static PyObject *
+depr_star_pos1_len1_opt_impl(PyObject *module, PyObject *a, PyObject *b);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos1_len1_opt'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos1_len1_opt'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos1_len1_opt'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos1_len1_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos1_len1_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+
+    if (nargs == 2) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing 2 positional arguments to depr_star_pos1_len1_opt() is "
+                "deprecated. Parameter 'b' will become a keyword-only parameter "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    b = args[1];
+skip_optional_pos:
+    return_value = depr_star_pos1_len1_opt_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos1_len1__doc__,
+"depr_star_pos1_len1($module, /, a, b)\n"
+"--\n"
+"\n"
+"Note: Passing 2 positional arguments to depr_star_pos1_len1() is\n"
+"deprecated. Parameter \'b\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS1_LEN1_METHODDEF    \
+    {"depr_star_pos1_len1", _PyCFunction_CAST(depr_star_pos1_len1), METH_FASTCALL|METH_KEYWORDS, depr_star_pos1_len1__doc__},
+
+static PyObject *
+depr_star_pos1_len1_impl(PyObject *module, PyObject *a, PyObject *b);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos1_len1'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos1_len1'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos1_len1'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos1_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos1_len1",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *b;
+
+    if (nargs == 2) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing 2 positional arguments to depr_star_pos1_len1() is "
+                "deprecated. Parameter 'b' will become a keyword-only parameter "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    return_value = depr_star_pos1_len1_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos1_len2_with_kwd__doc__,
+"depr_star_pos1_len2_with_kwd($module, /, a, b, c, *, d)\n"
+"--\n"
+"\n"
+"Note: Passing more than 1 positional argument to\n"
+"depr_star_pos1_len2_with_kwd() is deprecated. Parameters \'b\' and \'c\'\n"
+"will become keyword-only parameters in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS1_LEN2_WITH_KWD_METHODDEF    \
+    {"depr_star_pos1_len2_with_kwd", _PyCFunction_CAST(depr_star_pos1_len2_with_kwd), METH_FASTCALL|METH_KEYWORDS, depr_star_pos1_len2_with_kwd__doc__},
+
+static PyObject *
+depr_star_pos1_len2_with_kwd_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c, PyObject *d);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos1_len2_with_kwd'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos1_len2_with_kwd'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos1_len2_with_kwd'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos1_len2_with_kwd(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos1_len2_with_kwd",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+
+    if (nargs > 1 && nargs <= 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 1 positional argument to "
+                "depr_star_pos1_len2_with_kwd() is deprecated. Parameters 'b' and"
+                " 'c' will become keyword-only parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    return_value = depr_star_pos1_len2_with_kwd_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos2_len1__doc__,
+"depr_star_pos2_len1($module, /, a, b, c)\n"
+"--\n"
+"\n"
+"Note: Passing 3 positional arguments to depr_star_pos2_len1() is\n"
+"deprecated. Parameter \'c\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS2_LEN1_METHODDEF    \
+    {"depr_star_pos2_len1", _PyCFunction_CAST(depr_star_pos2_len1), METH_FASTCALL|METH_KEYWORDS, depr_star_pos2_len1__doc__},
+
+static PyObject *
+depr_star_pos2_len1_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos2_len1'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos2_len1'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos2_len1'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos2_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos2_len1",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+
+    if (nargs == 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing 3 positional arguments to depr_star_pos2_len1() is "
+                "deprecated. Parameter 'c' will become a keyword-only parameter "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    return_value = depr_star_pos2_len1_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos2_len2__doc__,
+"depr_star_pos2_len2($module, /, a, b, c, d)\n"
+"--\n"
+"\n"
+"Note: Passing more than 2 positional arguments to\n"
+"depr_star_pos2_len2() is deprecated. Parameters \'c\' and \'d\' will\n"
+"become keyword-only parameters in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS2_LEN2_METHODDEF    \
+    {"depr_star_pos2_len2", _PyCFunction_CAST(depr_star_pos2_len2), METH_FASTCALL|METH_KEYWORDS, depr_star_pos2_len2__doc__},
+
+static PyObject *
+depr_star_pos2_len2_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c, PyObject *d);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos2_len2'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos2_len2'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos2_len2'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos2_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos2_len2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+
+    if (nargs > 2 && nargs <= 4) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 2 positional arguments to "
+                "depr_star_pos2_len2() is deprecated. Parameters 'c' and 'd' will"
+                " become keyword-only parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 4, 4, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    return_value = depr_star_pos2_len2_impl(module, a, b, c, d);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_pos2_len2_with_kwd__doc__,
+"depr_star_pos2_len2_with_kwd($module, /, a, b, c, d, *, e)\n"
+"--\n"
+"\n"
+"Note: Passing more than 2 positional arguments to\n"
+"depr_star_pos2_len2_with_kwd() is deprecated. Parameters \'c\' and \'d\'\n"
+"will become keyword-only parameters in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_POS2_LEN2_WITH_KWD_METHODDEF    \
+    {"depr_star_pos2_len2_with_kwd", _PyCFunction_CAST(depr_star_pos2_len2_with_kwd), METH_FASTCALL|METH_KEYWORDS, depr_star_pos2_len2_with_kwd__doc__},
+
+static PyObject *
+depr_star_pos2_len2_with_kwd_impl(PyObject *module, PyObject *a, PyObject *b,
+                                  PyObject *c, PyObject *d, PyObject *e);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_pos2_len2_with_kwd'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_pos2_len2_with_kwd'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_pos2_len2_with_kwd'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_pos2_len2_with_kwd(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 5
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", "e", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_pos2_len2_with_kwd",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[5];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+    PyObject *e;
+
+    if (nargs > 2 && nargs <= 4) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 2 positional arguments to "
+                "depr_star_pos2_len2_with_kwd() is deprecated. Parameters 'c' and"
+                " 'd' will become keyword-only parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 4, 4, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    e = args[4];
+    return_value = depr_star_pos2_len2_with_kwd_impl(module, a, b, c, d, e);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_noinline__doc__,
+"depr_star_noinline($module, /, a, b, c=None, *, d=\'\')\n"
+"--\n"
+"\n"
+"Note: Passing more than 1 positional argument to depr_star_noinline()\n"
+"is deprecated. Parameters \'b\' and \'c\' will become keyword-only\n"
+"parameters in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_NOINLINE_METHODDEF    \
+    {"depr_star_noinline", _PyCFunction_CAST(depr_star_noinline), METH_FASTCALL|METH_KEYWORDS, depr_star_noinline__doc__},
+
+static PyObject *
+depr_star_noinline_impl(PyObject *module, PyObject *a, PyObject *b,
+                        PyObject *c, const char *d, Py_ssize_t d_length);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_noinline'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_noinline'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_noinline'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_noinline(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .format = "OO|O$s#:depr_star_noinline",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    const char *d = "";
+    Py_ssize_t d_length;
+
+    if (nargs > 1 && nargs <= 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 1 positional argument to depr_star_noinline() "
+                "is deprecated. Parameters 'b' and 'c' will become keyword-only "
+                "parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    if (!_PyArg_ParseStackAndKeywords(args, nargs, kwnames, &_parser,
+        &a, &b, &c, &d, &d_length)) {
+        goto exit;
+    }
+    return_value = depr_star_noinline_impl(module, a, b, c, d, d_length);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_star_multi__doc__,
+"depr_star_multi($module, /, a, b, c, d, e, f, g, *, h)\n"
+"--\n"
+"\n"
+"Note: Passing more than 1 positional argument to depr_star_multi() is\n"
+"deprecated. Parameter \'b\' will become a keyword-only parameter in\n"
+"Python 3.16. Parameters \'c\' and \'d\' will become keyword-only\n"
+"parameters in Python 3.15. Parameters \'e\', \'f\' and \'g\' will become\n"
+"keyword-only parameters in Python 3.14.\n"
+"");
+
+#define DEPR_STAR_MULTI_METHODDEF    \
+    {"depr_star_multi", _PyCFunction_CAST(depr_star_multi), METH_FASTCALL|METH_KEYWORDS, depr_star_multi__doc__},
+
+static PyObject *
+depr_star_multi_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+                     PyObject *d, PyObject *e, PyObject *f, PyObject *g,
+                     PyObject *h);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_star_multi'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_star_multi'.")
+#  else
+#    warning "Update the clinic input of 'depr_star_multi'."
+#  endif
+#endif
+
+static PyObject *
+depr_star_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 8
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), &_Py_ID(g), &_Py_ID(h), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", "d", "e", "f", "g", "h", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_star_multi",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[8];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+    PyObject *e;
+    PyObject *f;
+    PyObject *g;
+    PyObject *h;
+
+    if (nargs > 1 && nargs <= 7) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 1 positional argument to depr_star_multi() is "
+                "deprecated. Parameter 'b' will become a keyword-only parameter "
+                "in Python 3.16. Parameters 'c' and 'd' will become keyword-only "
+                "parameters in Python 3.15. Parameters 'e', 'f' and 'g' will "
+                "become keyword-only parameters in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 7, 7, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    e = args[4];
+    f = args[5];
+    g = args[6];
+    h = args[7];
+    return_value = depr_star_multi_impl(module, a, b, c, d, e, f, g, h);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_required_1__doc__,
+"depr_kwd_required_1($module, a, /, b)\n"
+"--\n"
+"\n"
+"Note: Passing keyword argument \'b\' to depr_kwd_required_1() is\n"
+"deprecated. Parameter \'b\' will become positional-only in Python 3.14.\n"
+"");
+
+#define DEPR_KWD_REQUIRED_1_METHODDEF    \
+    {"depr_kwd_required_1", _PyCFunction_CAST(depr_kwd_required_1), METH_FASTCALL|METH_KEYWORDS, depr_kwd_required_1__doc__},
+
+static PyObject *
+depr_kwd_required_1_impl(PyObject *module, PyObject *a, PyObject *b);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_required_1'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_required_1'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_required_1'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_required_1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_required_1",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    PyObject *a;
+    PyObject *b;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (nargs < 2) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'b' to depr_kwd_required_1() is "
+                "deprecated. Parameter 'b' will become positional-only in Python "
+                "3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    b = args[1];
+    return_value = depr_kwd_required_1_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_required_2__doc__,
+"depr_kwd_required_2($module, a, /, b, c)\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'b\' and \'c\' to depr_kwd_required_2()\n"
+"is deprecated. Parameters \'b\' and \'c\' will become positional-only in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_KWD_REQUIRED_2_METHODDEF    \
+    {"depr_kwd_required_2", _PyCFunction_CAST(depr_kwd_required_2), METH_FASTCALL|METH_KEYWORDS, depr_kwd_required_2__doc__},
+
+static PyObject *
+depr_kwd_required_2_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_required_2'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_required_2'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_required_2'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_required_2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_required_2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b' and 'c' to depr_kwd_required_2() "
+                "is deprecated. Parameters 'b' and 'c' will become "
+                "positional-only in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    return_value = depr_kwd_required_2_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_optional_1__doc__,
+"depr_kwd_optional_1($module, a, /, b=None)\n"
+"--\n"
+"\n"
+"Note: Passing keyword argument \'b\' to depr_kwd_optional_1() is\n"
+"deprecated. Parameter \'b\' will become positional-only in Python 3.14.\n"
+"");
+
+#define DEPR_KWD_OPTIONAL_1_METHODDEF    \
+    {"depr_kwd_optional_1", _PyCFunction_CAST(depr_kwd_optional_1), METH_FASTCALL|METH_KEYWORDS, depr_kwd_optional_1__doc__},
+
+static PyObject *
+depr_kwd_optional_1_impl(PyObject *module, PyObject *a, PyObject *b);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_optional_1'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_optional_1'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_optional_1'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_optional_1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_optional_1",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 2, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (kwnames && PyTuple_GET_SIZE(kwnames) && nargs < 2 && args[1]) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword argument 'b' to depr_kwd_optional_1() is "
+                "deprecated. Parameter 'b' will become positional-only in Python "
+                "3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    b = args[1];
+skip_optional_pos:
+    return_value = depr_kwd_optional_1_impl(module, a, b);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_optional_2__doc__,
+"depr_kwd_optional_2($module, a, /, b=None, c=None)\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'b\' and \'c\' to depr_kwd_optional_2()\n"
+"is deprecated. Parameters \'b\' and \'c\' will become positional-only in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_KWD_OPTIONAL_2_METHODDEF    \
+    {"depr_kwd_optional_2", _PyCFunction_CAST(depr_kwd_optional_2), METH_FASTCALL|METH_KEYWORDS, depr_kwd_optional_2__doc__},
+
+static PyObject *
+depr_kwd_optional_2_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_optional_2'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_optional_2'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_optional_2'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_optional_2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_optional_2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (kwnames && PyTuple_GET_SIZE(kwnames) && ((nargs < 2 && args[1]) || (nargs < 3 && args[2]))) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b' and 'c' to depr_kwd_optional_2() "
+                "is deprecated. Parameters 'b' and 'c' will become "
+                "positional-only in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    c = args[2];
+skip_optional_pos:
+    return_value = depr_kwd_optional_2_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_optional_3__doc__,
+"depr_kwd_optional_3($module, /, a=None, b=None, c=None)\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'a\', \'b\' and \'c\' to\n"
+"depr_kwd_optional_3() is deprecated. Parameters \'a\', \'b\' and \'c\' will\n"
+"become positional-only in Python 3.14.\n"
+"");
+
+#define DEPR_KWD_OPTIONAL_3_METHODDEF    \
+    {"depr_kwd_optional_3", _PyCFunction_CAST(depr_kwd_optional_3), METH_FASTCALL|METH_KEYWORDS, depr_kwd_optional_3__doc__},
+
+static PyObject *
+depr_kwd_optional_3_impl(PyObject *module, PyObject *a, PyObject *b,
+                         PyObject *c);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_optional_3'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_optional_3'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_optional_3'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_optional_3(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_optional_3",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *a = Py_None;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (kwnames && PyTuple_GET_SIZE(kwnames) && ((nargs < 1 && args[0]) || (nargs < 2 && args[1]) || (nargs < 3 && args[2]))) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'a', 'b' and 'c' to "
+                "depr_kwd_optional_3() is deprecated. Parameters 'a', 'b' and 'c'"
+                " will become positional-only in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[0]) {
+        a = args[0];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[1]) {
+        b = args[1];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    c = args[2];
+skip_optional_pos:
+    return_value = depr_kwd_optional_3_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_required_optional__doc__,
+"depr_kwd_required_optional($module, a, /, b, c=None)\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'b\' and \'c\' to\n"
+"depr_kwd_required_optional() is deprecated. Parameters \'b\' and \'c\'\n"
+"will become positional-only in Python 3.14.\n"
+"");
+
+#define DEPR_KWD_REQUIRED_OPTIONAL_METHODDEF    \
+    {"depr_kwd_required_optional", _PyCFunction_CAST(depr_kwd_required_optional), METH_FASTCALL|METH_KEYWORDS, depr_kwd_required_optional__doc__},
+
+static PyObject *
+depr_kwd_required_optional_impl(PyObject *module, PyObject *a, PyObject *b,
+                                PyObject *c);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_required_optional'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_required_optional'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_required_optional'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_required_optional(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 2
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_required_optional",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (kwnames && PyTuple_GET_SIZE(kwnames) && ((nargs < 2) || (nargs < 3 && args[2]))) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b' and 'c' to "
+                "depr_kwd_required_optional() is deprecated. Parameters 'b' and "
+                "'c' will become positional-only in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    b = args[1];
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    c = args[2];
+skip_optional_pos:
+    return_value = depr_kwd_required_optional_impl(module, a, b, c);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_noinline__doc__,
+"depr_kwd_noinline($module, a, /, b, c=None, d=\'\')\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'b\' and \'c\' to depr_kwd_noinline() is\n"
+"deprecated. Parameters \'b\' and \'c\' will become positional-only in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_KWD_NOINLINE_METHODDEF    \
+    {"depr_kwd_noinline", _PyCFunction_CAST(depr_kwd_noinline), METH_FASTCALL|METH_KEYWORDS, depr_kwd_noinline__doc__},
+
+static PyObject *
+depr_kwd_noinline_impl(PyObject *module, PyObject *a, PyObject *b,
+                       PyObject *c, const char *d, Py_ssize_t d_length);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_noinline'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_noinline'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_noinline'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_noinline(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .format = "OO|Os#:depr_kwd_noinline",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *a;
+    PyObject *b;
+    PyObject *c = Py_None;
+    const char *d = "";
+    Py_ssize_t d_length;
+
+    if (!_PyArg_ParseStackAndKeywords(args, nargs, kwnames, &_parser,
+        &a, &b, &c, &d, &d_length)) {
+        goto exit;
+    }
+    if (kwnames && PyTuple_GET_SIZE(kwnames) && ((nargs < 2) || (nargs < 3 && PySequence_Contains(kwnames, &_Py_ID(c))))) {
+        if (PyErr_Occurred()) { // PySequence_Contains() above can fail
+            goto exit;
+        }
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b' and 'c' to depr_kwd_noinline() is "
+                "deprecated. Parameters 'b' and 'c' will become positional-only "
+                "in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    return_value = depr_kwd_noinline_impl(module, a, b, c, d, d_length);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_kwd_multi__doc__,
+"depr_kwd_multi($module, a, /, b, c, d, e, f, g, h)\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'b\', \'c\', \'d\', \'e\', \'f\' and \'g\' to\n"
+"depr_kwd_multi() is deprecated. Parameter \'b\' will become positional-\n"
+"only in Python 3.14. Parameters \'c\' and \'d\' will become positional-\n"
+"only in Python 3.15. Parameters \'e\', \'f\' and \'g\' will become\n"
+"positional-only in Python 3.16.\n"
+"");
+
+#define DEPR_KWD_MULTI_METHODDEF    \
+    {"depr_kwd_multi", _PyCFunction_CAST(depr_kwd_multi), METH_FASTCALL|METH_KEYWORDS, depr_kwd_multi__doc__},
+
+static PyObject *
+depr_kwd_multi_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+                    PyObject *d, PyObject *e, PyObject *f, PyObject *g,
+                    PyObject *h);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_kwd_multi'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_kwd_multi'.")
+#  else
+#    warning "Update the clinic input of 'depr_kwd_multi'."
+#  endif
+#endif
+
+static PyObject *
+depr_kwd_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 7
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), &_Py_ID(g), &_Py_ID(h), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", "e", "f", "g", "h", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_kwd_multi",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[8];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+    PyObject *e;
+    PyObject *f;
+    PyObject *g;
+    PyObject *h;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 8, 8, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (nargs < 7) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b', 'c', 'd', 'e', 'f' and 'g' to "
+                "depr_kwd_multi() is deprecated. Parameter 'b' will become "
+                "positional-only in Python 3.14. Parameters 'c' and 'd' will "
+                "become positional-only in Python 3.15. Parameters 'e', 'f' and "
+                "'g' will become positional-only in Python 3.16.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    e = args[4];
+    f = args[5];
+    g = args[6];
+    h = args[7];
+    return_value = depr_kwd_multi_impl(module, a, b, c, d, e, f, g, h);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(depr_multi__doc__,
+"depr_multi($module, a, /, b, c, d, e, f, *, g)\n"
+"--\n"
+"\n"
+"Note: Passing keyword arguments \'b\' and \'c\' to depr_multi() is\n"
+"deprecated. Parameter \'b\' will become positional-only in Python 3.14.\n"
+"Parameter \'c\' will become positional-only in Python 3.15.\n"
+"\n"
+"\n"
+"Note: Passing more than 4 positional arguments to depr_multi() is\n"
+"deprecated. Parameter \'e\' will become a keyword-only parameter in\n"
+"Python 3.15. Parameter \'f\' will become a keyword-only parameter in\n"
+"Python 3.14.\n"
+"");
+
+#define DEPR_MULTI_METHODDEF    \
+    {"depr_multi", _PyCFunction_CAST(depr_multi), METH_FASTCALL|METH_KEYWORDS, depr_multi__doc__},
+
+static PyObject *
+depr_multi_impl(PyObject *module, PyObject *a, PyObject *b, PyObject *c,
+                PyObject *d, PyObject *e, PyObject *f, PyObject *g);
+
+// Emit compiler warnings when we get to Python 3.14.
+#if PY_VERSION_HEX >= 0x030e00C0
+#  error "Update the clinic input of 'depr_multi'."
+#elif PY_VERSION_HEX >= 0x030e00A0
+#  ifdef _MSC_VER
+#    pragma message ("Update the clinic input of 'depr_multi'.")
+#  else
+#    warning "Update the clinic input of 'depr_multi'."
+#  endif
+#endif
+
+static PyObject *
+depr_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 6
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), &_Py_ID(g), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "b", "c", "d", "e", "f", "g", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "depr_multi",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[7];
+    PyObject *a;
+    PyObject *b;
+    PyObject *c;
+    PyObject *d;
+    PyObject *e;
+    PyObject *f;
+    PyObject *g;
+
+    if (nargs > 4 && nargs <= 6) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing more than 4 positional arguments to depr_multi() is "
+                "deprecated. Parameter 'e' will become a keyword-only parameter "
+                "in Python 3.15. Parameter 'f' will become a keyword-only "
+                "parameter in Python 3.14.", 1))
+        {
+            goto exit;
+        }
+    }
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 6, 6, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                "Passing keyword arguments 'b' and 'c' to depr_multi() is "
+                "deprecated. Parameter 'b' will become positional-only in Python "
+                "3.14. Parameter 'c' will become positional-only in Python 3.15.", 1))
+        {
+            goto exit;
+        }
+    }
+    a = args[0];
+    b = args[1];
+    c = args[2];
+    d = args[3];
+    e = args[4];
+    f = args[5];
+    g = args[6];
+    return_value = depr_multi_impl(module, a, b, c, d, e, f, g);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=2c19d1804ba6e53b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic_limited.c.h b/Modules/clinic/_testclinic_limited.c.h
new file mode 100644
index 00000000000000..eff72cee24975c
--- /dev/null
+++ b/Modules/clinic/_testclinic_limited.c.h
@@ -0,0 +1,94 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(test_empty_function__doc__,
+"test_empty_function($module, /)\n"
+"--\n"
+"\n");
+
+#define TEST_EMPTY_FUNCTION_METHODDEF    \
+    {"test_empty_function", (PyCFunction)test_empty_function, METH_NOARGS, test_empty_function__doc__},
+
+static PyObject *
+test_empty_function_impl(PyObject *module);
+
+static PyObject *
+test_empty_function(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return test_empty_function_impl(module);
+}
+
+PyDoc_STRVAR(my_int_func__doc__,
+"my_int_func($module, arg, /)\n"
+"--\n"
+"\n");
+
+#define MY_INT_FUNC_METHODDEF    \
+    {"my_int_func", (PyCFunction)my_int_func, METH_O, my_int_func__doc__},
+
+static int
+my_int_func_impl(PyObject *module, int arg);
+
+static PyObject *
+my_int_func(PyObject *module, PyObject *arg_)
+{
+    PyObject *return_value = NULL;
+    int arg;
+    int _return_value;
+
+    arg = PyLong_AsInt(arg_);
+    if (arg == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = my_int_func_impl(module, arg);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(my_int_sum__doc__,
+"my_int_sum($module, x, y, /)\n"
+"--\n"
+"\n");
+
+#define MY_INT_SUM_METHODDEF    \
+    {"my_int_sum", (PyCFunction)(void(*)(void))my_int_sum, METH_FASTCALL, my_int_sum__doc__},
+
+static int
+my_int_sum_impl(PyObject *module, int x, int y);
+
+static PyObject *
+my_int_sum(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int x;
+    int y;
+    int _return_value;
+
+    if (nargs != 2) {
+        PyErr_Format(PyExc_TypeError, "my_int_sum expected 2 arguments, got %zd", nargs);
+        goto exit;
+    }
+    x = PyLong_AsInt(args[0]);
+    if (x == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    y = PyLong_AsInt(args[1]);
+    if (y == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    _return_value = my_int_sum_impl(module, x, y);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=5cf64baf978d2288 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testinternalcapi.c.h b/Modules/clinic/_testinternalcapi.c.h
index 41dd50437956c4..cba2a943d03456 100644
--- a/Modules/clinic/_testinternalcapi.c.h
+++ b/Modules/clinic/_testinternalcapi.c.h
@@ -3,10 +3,69 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
+PyDoc_STRVAR(_testinternalcapi_compiler_cleandoc__doc__,
+"compiler_cleandoc($module, /, doc)\n"
+"--\n"
+"\n"
+"C implementation of inspect.cleandoc().");
+
+#define _TESTINTERNALCAPI_COMPILER_CLEANDOC_METHODDEF    \
+    {"compiler_cleandoc", _PyCFunction_CAST(_testinternalcapi_compiler_cleandoc), METH_FASTCALL|METH_KEYWORDS, _testinternalcapi_compiler_cleandoc__doc__},
+
+static PyObject *
+_testinternalcapi_compiler_cleandoc_impl(PyObject *module, PyObject *doc);
+
+static PyObject *
+_testinternalcapi_compiler_cleandoc(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(doc), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"doc", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "compiler_cleandoc",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject *doc;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("compiler_cleandoc", "argument 'doc'", "str", args[0]);
+        goto exit;
+    }
+    doc = args[0];
+    return_value = _testinternalcapi_compiler_cleandoc_impl(module, doc);
+
+exit:
+    return return_value;
+}
 
 PyDoc_STRVAR(_testinternalcapi_compiler_codegen__doc__,
 "compiler_codegen($module, /, ast, filename, optimize, compile_mode=0)\n"
@@ -64,14 +123,14 @@ _testinternalcapi_compiler_codegen(PyObject *module, PyObject *const *args, Py_s
     }
     ast = args[0];
     filename = args[1];
-    optimize = _PyLong_AsInt(args[2]);
+    optimize = PyLong_AsInt(args[2]);
     if (optimize == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    compile_mode = _PyLong_AsInt(args[3]);
+    compile_mode = PyLong_AsInt(args[3]);
     if (compile_mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -83,7 +142,7 @@ _testinternalcapi_compiler_codegen(PyObject *module, PyObject *const *args, Py_s
 }
 
 PyDoc_STRVAR(_testinternalcapi_optimize_cfg__doc__,
-"optimize_cfg($module, /, instructions, consts)\n"
+"optimize_cfg($module, /, instructions, consts, nlocals)\n"
 "--\n"
 "\n"
 "Apply compiler optimizations to an instruction list.");
@@ -93,7 +152,7 @@ PyDoc_STRVAR(_testinternalcapi_optimize_cfg__doc__,
 
 static PyObject *
 _testinternalcapi_optimize_cfg_impl(PyObject *module, PyObject *instructions,
-                                    PyObject *consts);
+                                    PyObject *consts, int nlocals);
 
 static PyObject *
 _testinternalcapi_optimize_cfg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -101,14 +160,14 @@ _testinternalcapi_optimize_cfg(PyObject *module, PyObject *const *args, Py_ssize
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
-    #define NUM_KEYWORDS 2
+    #define NUM_KEYWORDS 3
     static struct {
         PyGC_Head _this_is_not_used;
         PyObject_VAR_HEAD
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(instructions), &_Py_ID(consts), },
+        .ob_item = { &_Py_ID(instructions), &_Py_ID(consts), &_Py_ID(nlocals), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -117,24 +176,29 @@ _testinternalcapi_optimize_cfg(PyObject *module, PyObject *const *args, Py_ssize
     #  define KWTUPLE NULL
     #endif  // !Py_BUILD_CORE
 
-    static const char * const _keywords[] = {"instructions", "consts", NULL};
+    static const char * const _keywords[] = {"instructions", "consts", "nlocals", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
         .fname = "optimize_cfg",
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
+    PyObject *argsbuf[3];
     PyObject *instructions;
     PyObject *consts;
+    int nlocals;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 0, argsbuf);
     if (!args) {
         goto exit;
     }
     instructions = args[0];
     consts = args[1];
-    return_value = _testinternalcapi_optimize_cfg_impl(module, instructions, consts);
+    nlocals = PyLong_AsInt(args[2]);
+    if (nlocals == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _testinternalcapi_optimize_cfg_impl(module, instructions, consts, nlocals);
 
 exit:
     return return_value;
@@ -201,4 +265,21 @@ _testinternalcapi_assemble_code_object(PyObject *module, PyObject *const *args,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=ab661d56a14b1a1c input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_testinternalcapi_test_long_numbits__doc__,
+"test_long_numbits($module, /)\n"
+"--\n"
+"\n");
+
+#define _TESTINTERNALCAPI_TEST_LONG_NUMBITS_METHODDEF    \
+    {"test_long_numbits", (PyCFunction)_testinternalcapi_test_long_numbits, METH_NOARGS, _testinternalcapi_test_long_numbits__doc__},
+
+static PyObject *
+_testinternalcapi_test_long_numbits_impl(PyObject *module);
+
+static PyObject *
+_testinternalcapi_test_long_numbits(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return _testinternalcapi_test_long_numbits_impl(module);
+}
+/*[clinic end generated code: output=679bf53bbae20085 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testmultiphase.c.h b/Modules/clinic/_testmultiphase.c.h
index 42ec7475e5e4be..c0a00954c16cbe 100644
--- a/Modules/clinic/_testmultiphase.c.h
+++ b/Modules/clinic/_testmultiphase.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_testmultiphase_StateAccessType_get_defining_module__doc__,
 "get_defining_module($self, /)\n"
@@ -117,7 +117,7 @@ _testmultiphase_StateAccessType_increment_count_clinic(StateAccessTypeObject *se
         goto skip_optional_pos;
     }
     if (args[0]) {
-        n = _PyLong_AsInt(args[0]);
+        n = PyLong_AsInt(args[0]);
         if (n == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -162,4 +162,4 @@ _testmultiphase_StateAccessType_get_count(StateAccessTypeObject *self, PyTypeObj
     }
     return _testmultiphase_StateAccessType_get_count_impl(self, cls);
 }
-/*[clinic end generated code: output=52ea97ab2f03bb6d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d8c262af27b3b98d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_tkinter.c.h b/Modules/clinic/_tkinter.c.h
index 96c6ee26f426c3..188bcc773cfc41 100644
--- a/Modules/clinic/_tkinter.c.h
+++ b/Modules/clinic/_tkinter.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(_tkinter_tkapp_eval__doc__,
 "eval($self, script, /)\n"
@@ -432,7 +428,7 @@ _tkinter_tkapp_createfilehandler(TkappObject *self, PyObject *const *args, Py_ss
         goto exit;
     }
     file = args[0];
-    mask = _PyLong_AsInt(args[1]);
+    mask = PyLong_AsInt(args[1]);
     if (mask == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -496,7 +492,7 @@ _tkinter_tkapp_createtimerhandler(TkappObject *self, PyObject *const *args, Py_s
     if (!_PyArg_CheckPositional("createtimerhandler", nargs, 2, 2)) {
         goto exit;
     }
-    milliseconds = _PyLong_AsInt(args[0]);
+    milliseconds = PyLong_AsInt(args[0]);
     if (milliseconds == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -530,7 +526,7 @@ _tkinter_tkapp_mainloop(TkappObject *self, PyObject *const *args, Py_ssize_t nar
     if (nargs < 1) {
         goto skip_optional;
     }
-    threshold = _PyLong_AsInt(args[0]);
+    threshold = PyLong_AsInt(args[0]);
     if (threshold == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -564,7 +560,7 @@ _tkinter_tkapp_dooneevent(TkappObject *self, PyObject *const *args, Py_ssize_t n
     if (nargs < 1) {
         goto skip_optional;
     }
-    flags = _PyLong_AsInt(args[0]);
+    flags = PyLong_AsInt(args[0]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -820,7 +816,7 @@ _tkinter_setbusywaitinterval(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int new_val;
 
-    new_val = _PyLong_AsInt(arg);
+    new_val = PyLong_AsInt(arg);
     if (new_val == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -865,4 +861,4 @@ _tkinter_getbusywaitinterval(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef _TKINTER_TKAPP_DELETEFILEHANDLER_METHODDEF
     #define _TKINTER_TKAPP_DELETEFILEHANDLER_METHODDEF
 #endif /* !defined(_TKINTER_TKAPP_DELETEFILEHANDLER_METHODDEF) */
-/*[clinic end generated code: output=2a4e3bf8448604b5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d447501ec5aa9447 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_tracemalloc.c.h b/Modules/clinic/_tracemalloc.c.h
index a89cd9aabca8d6..1d100247423991 100644
--- a/Modules/clinic/_tracemalloc.c.h
+++ b/Modules/clinic/_tracemalloc.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_tracemalloc_is_tracing__doc__,
 "is_tracing($module, /)\n"
@@ -107,7 +103,7 @@ _tracemalloc_start(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 1) {
         goto skip_optional;
     }
-    nframe = _PyLong_AsInt(args[0]);
+    nframe = PyLong_AsInt(args[0]);
     if (nframe == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -218,4 +214,4 @@ _tracemalloc_reset_peak(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _tracemalloc_reset_peak_impl(module);
 }
-/*[clinic end generated code: output=44e3f8553aae2535 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9d4d884b156c2ddb input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_typingmodule.c.h b/Modules/clinic/_typingmodule.c.h
index f980aa0d0844da..ea415e67153ed8 100644
--- a/Modules/clinic/_typingmodule.c.h
+++ b/Modules/clinic/_typingmodule.c.h
@@ -2,12 +2,6 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
 PyDoc_STRVAR(_typing__idfunc__doc__,
 "_idfunc($module, x, /)\n"
 "--\n"
@@ -15,4 +9,4 @@ PyDoc_STRVAR(_typing__idfunc__doc__,
 
 #define _TYPING__IDFUNC_METHODDEF    \
     {"_idfunc", (PyCFunction)_typing__idfunc, METH_O, _typing__idfunc__doc__},
-/*[clinic end generated code: output=97457fda45072c7d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e7ea2a3cb7ab301a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_weakref.c.h b/Modules/clinic/_weakref.c.h
index 48feb042cac039..550b6c4d71a015 100644
--- a/Modules/clinic/_weakref.c.h
+++ b/Modules/clinic/_weakref.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_weakref_getweakrefcount__doc__,
 "getweakrefcount($module, object, /)\n"
@@ -26,7 +23,9 @@ _weakref_getweakrefcount(PyObject *module, PyObject *object)
     PyObject *return_value = NULL;
     Py_ssize_t _return_value;
 
+    Py_BEGIN_CRITICAL_SECTION(object);
     _return_value = _weakref_getweakrefcount_impl(module, object);
+    Py_END_CRITICAL_SECTION();
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
     }
@@ -80,6 +79,21 @@ PyDoc_STRVAR(_weakref_getweakrefs__doc__,
 #define _WEAKREF_GETWEAKREFS_METHODDEF    \
     {"getweakrefs", (PyCFunction)_weakref_getweakrefs, METH_O, _weakref_getweakrefs__doc__},
 
+static PyObject *
+_weakref_getweakrefs_impl(PyObject *module, PyObject *object);
+
+static PyObject *
+_weakref_getweakrefs(PyObject *module, PyObject *object)
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(object);
+    return_value = _weakref_getweakrefs_impl(module, object);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_weakref_proxy__doc__,
 "proxy($module, object, callback=None, /)\n"
 "--\n"
@@ -116,4 +130,4 @@ _weakref_proxy(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=28265e89d583273d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d5d30707212a9870 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_winapi.c.h b/Modules/clinic/_winapi.c.h
index 7bc63e612be348..3a3231c051ef71 100644
--- a/Modules/clinic/_winapi.c.h
+++ b/Modules/clinic/_winapi.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_long.h"          // _PyLong_Size_t_Converter()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_winapi_Overlapped_GetOverlappedResult__doc__,
 "GetOverlappedResult($self, wait, /)\n"
@@ -397,26 +398,25 @@ PyDoc_STRVAR(_winapi_CreateProcess__doc__,
     {"CreateProcess", _PyCFunction_CAST(_winapi_CreateProcess), METH_FASTCALL, _winapi_CreateProcess__doc__},
 
 static PyObject *
-_winapi_CreateProcess_impl(PyObject *module,
-                           const Py_UNICODE *application_name,
+_winapi_CreateProcess_impl(PyObject *module, const wchar_t *application_name,
                            PyObject *command_line, PyObject *proc_attrs,
                            PyObject *thread_attrs, BOOL inherit_handles,
                            DWORD creation_flags, PyObject *env_mapping,
-                           const Py_UNICODE *current_directory,
+                           const wchar_t *current_directory,
                            PyObject *startup_info);
 
 static PyObject *
 _winapi_CreateProcess(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    const Py_UNICODE *application_name = NULL;
+    const wchar_t *application_name = NULL;
     PyObject *command_line;
     PyObject *proc_attrs;
     PyObject *thread_attrs;
     BOOL inherit_handles;
     DWORD creation_flags;
     PyObject *env_mapping;
-    const Py_UNICODE *current_directory = NULL;
+    const wchar_t *current_directory = NULL;
     PyObject *startup_info;
 
     if (!_PyArg_ParseStack(args, nargs, "O&OOOikOO&O:CreateProcess",
@@ -568,7 +568,7 @@ _winapi_GetExitCodeProcess(PyObject *module, PyObject *arg)
     if ((_return_value == PY_DWORD_MAX) && PyErr_Occurred()) {
         goto exit;
     }
-    return_value = Py_BuildValue("k", _return_value);
+    return_value = PyLong_FromUnsignedLong(_return_value);
 
 exit:
     return return_value;
@@ -595,7 +595,7 @@ _winapi_GetLastError(PyObject *module, PyObject *Py_UNUSED(ignored))
     if ((_return_value == PY_DWORD_MAX) && PyErr_Occurred()) {
         goto exit;
     }
-    return_value = Py_BuildValue("k", _return_value);
+    return_value = PyLong_FromUnsignedLong(_return_value);
 
 exit:
     return return_value;
@@ -885,7 +885,7 @@ PyDoc_STRVAR(_winapi_LCMapStringEx__doc__,
 
 static PyObject *
 _winapi_LCMapStringEx_impl(PyObject *module, LPCWSTR locale, DWORD flags,
-                           LPCWSTR src);
+                           PyObject *src);
 
 static PyObject *
 _winapi_LCMapStringEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -912,16 +912,16 @@ _winapi_LCMapStringEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     static const char * const _keywords[] = {"locale", "flags", "src", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
-        .format = "O&kO&:LCMapStringEx",
+        .format = "O&kU:LCMapStringEx",
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
     LPCWSTR locale = NULL;
     DWORD flags;
-    LPCWSTR src = NULL;
+    PyObject *src;
 
     if (!_PyArg_ParseStackAndKeywords(args, nargs, kwnames, &_parser,
-        _PyUnicode_WideCharString_Converter, &locale, &flags, _PyUnicode_WideCharString_Converter, &src)) {
+        _PyUnicode_WideCharString_Converter, &locale, &flags, &src)) {
         goto exit;
     }
     return_value = _winapi_LCMapStringEx_impl(module, locale, flags, src);
@@ -929,8 +929,6 @@ _winapi_LCMapStringEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     /* Cleanup for locale */
     PyMem_Free((void *)locale);
-    /* Cleanup for src */
-    PyMem_Free((void *)src);
 
     return return_value;
 }
@@ -1307,7 +1305,7 @@ _winapi_GetFileType(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     if ((_return_value == PY_DWORD_MAX) && PyErr_Occurred()) {
         goto exit;
     }
-    return_value = Py_BuildValue("k", _return_value);
+    return_value = PyLong_FromUnsignedLong(_return_value);
 
 exit:
     return return_value;
@@ -1411,4 +1409,74 @@ _winapi_NeedCurrentDirectoryForExePath(PyObject *module, PyObject *arg)
 
     return return_value;
 }
-/*[clinic end generated code: output=96ea65ece7912d0a input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_winapi_CopyFile2__doc__,
+"CopyFile2($module, /, existing_file_name, new_file_name, flags,\n"
+"          progress_routine=None)\n"
+"--\n"
+"\n"
+"Copies a file from one name to a new name.\n"
+"\n"
+"This is implemented using the CopyFile2 API, which preserves all stat\n"
+"and metadata information apart from security attributes.\n"
+"\n"
+"progress_routine is reserved for future use, but is currently not\n"
+"implemented. Its value is ignored.");
+
+#define _WINAPI_COPYFILE2_METHODDEF    \
+    {"CopyFile2", _PyCFunction_CAST(_winapi_CopyFile2), METH_FASTCALL|METH_KEYWORDS, _winapi_CopyFile2__doc__},
+
+static PyObject *
+_winapi_CopyFile2_impl(PyObject *module, LPCWSTR existing_file_name,
+                       LPCWSTR new_file_name, DWORD flags,
+                       PyObject *progress_routine);
+
+static PyObject *
+_winapi_CopyFile2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 4
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(existing_file_name), &_Py_ID(new_file_name), &_Py_ID(flags), &_Py_ID(progress_routine), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"existing_file_name", "new_file_name", "flags", "progress_routine", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .format = "O&O&k|O:CopyFile2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    LPCWSTR existing_file_name = NULL;
+    LPCWSTR new_file_name = NULL;
+    DWORD flags;
+    PyObject *progress_routine = Py_None;
+
+    if (!_PyArg_ParseStackAndKeywords(args, nargs, kwnames, &_parser,
+        _PyUnicode_WideCharString_Converter, &existing_file_name, _PyUnicode_WideCharString_Converter, &new_file_name, &flags, &progress_routine)) {
+        goto exit;
+    }
+    return_value = _winapi_CopyFile2_impl(module, existing_file_name, new_file_name, flags, progress_routine);
+
+exit:
+    /* Cleanup for existing_file_name */
+    PyMem_Free((void *)existing_file_name);
+    /* Cleanup for new_file_name */
+    PyMem_Free((void *)new_file_name);
+
+    return return_value;
+}
+/*[clinic end generated code: output=e1a9908bb82a6379 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_zoneinfo.c.h b/Modules/clinic/_zoneinfo.c.h
index ae62865e0f67df..9905b6425e2f79 100644
--- a/Modules/clinic/_zoneinfo.c.h
+++ b/Modules/clinic/_zoneinfo.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(zoneinfo_ZoneInfo_from_file__doc__,
 "from_file($type, file_obj, /, key=None)\n"
@@ -372,4 +372,4 @@ zoneinfo_ZoneInfo__unpickle(PyTypeObject *type, PyTypeObject *cls, PyObject *con
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=54051388dfc408af input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2a15f32fdd2ab6cd input=a9049054013a1b77]*/
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index e68c3920072dbb..dbce0313541649 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(array_array___copy____doc__,
 "__copy__($self, /)\n"
@@ -445,10 +442,6 @@ array_array_frombytes(arrayobject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("frombytes", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = array_array_frombytes_impl(self, &buffer);
 
 exit:
@@ -504,9 +497,6 @@ array_array_fromunicode(arrayobject *self, PyObject *arg)
         _PyArg_BadArgument("fromunicode", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     ustr = arg;
     return_value = array_array_fromunicode_impl(self, ustr);
 
@@ -587,15 +577,12 @@ array__array_reconstructor(PyObject *module, PyObject *const *args, Py_ssize_t n
         _PyArg_BadArgument("_array_reconstructor", "argument 2", "a unicode character", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1])) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(args[1]) != 1) {
         _PyArg_BadArgument("_array_reconstructor", "argument 2", "a unicode character", args[1]);
         goto exit;
     }
     typecode = PyUnicode_READ_CHAR(args[1], 0);
-    mformat_code = _PyLong_AsInt(args[2]);
+    mformat_code = PyLong_AsInt(args[2]);
     if (mformat_code == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -680,4 +667,4 @@ PyDoc_STRVAR(array_arrayiterator___setstate____doc__,
 
 #define ARRAY_ARRAYITERATOR___SETSTATE___METHODDEF    \
     {"__setstate__", (PyCFunction)array_arrayiterator___setstate__, METH_O, array_arrayiterator___setstate____doc__},
-/*[clinic end generated code: output=69bc1451f7bda234 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bf086c01e7e482bf input=a9049054013a1b77]*/
diff --git a/Modules/clinic/audioop.c.h b/Modules/clinic/audioop.c.h
deleted file mode 100644
index 1a7ccf8b8284cb..00000000000000
--- a/Modules/clinic/audioop.c.h
+++ /dev/null
@@ -1,1318 +0,0 @@
-/*[clinic input]
-preserve
-[clinic start generated code]*/
-
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
-PyDoc_STRVAR(audioop_getsample__doc__,
-"getsample($module, fragment, width, index, /)\n"
-"--\n"
-"\n"
-"Return the value of sample index from the fragment.");
-
-#define AUDIOOP_GETSAMPLE_METHODDEF    \
-    {"getsample", _PyCFunction_CAST(audioop_getsample), METH_FASTCALL, audioop_getsample__doc__},
-
-static PyObject *
-audioop_getsample_impl(PyObject *module, Py_buffer *fragment, int width,
-                       Py_ssize_t index);
-
-static PyObject *
-audioop_getsample(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    Py_ssize_t index;
-
-    if (!_PyArg_CheckPositional("getsample", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("getsample", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    {
-        Py_ssize_t ival = -1;
-        PyObject *iobj = _PyNumber_Index(args[2]);
-        if (iobj != NULL) {
-            ival = PyLong_AsSsize_t(iobj);
-            Py_DECREF(iobj);
-        }
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        index = ival;
-    }
-    return_value = audioop_getsample_impl(module, &fragment, width, index);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_max__doc__,
-"max($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the maximum of the absolute value of all samples in a fragment.");
-
-#define AUDIOOP_MAX_METHODDEF    \
-    {"max", _PyCFunction_CAST(audioop_max), METH_FASTCALL, audioop_max__doc__},
-
-static PyObject *
-audioop_max_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_max(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("max", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("max", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_max_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_minmax__doc__,
-"minmax($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the minimum and maximum values of all samples in the sound fragment.");
-
-#define AUDIOOP_MINMAX_METHODDEF    \
-    {"minmax", _PyCFunction_CAST(audioop_minmax), METH_FASTCALL, audioop_minmax__doc__},
-
-static PyObject *
-audioop_minmax_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_minmax(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("minmax", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("minmax", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_minmax_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_avg__doc__,
-"avg($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the average over all samples in the fragment.");
-
-#define AUDIOOP_AVG_METHODDEF    \
-    {"avg", _PyCFunction_CAST(audioop_avg), METH_FASTCALL, audioop_avg__doc__},
-
-static PyObject *
-audioop_avg_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_avg(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("avg", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("avg", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_avg_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_rms__doc__,
-"rms($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the root-mean-square of the fragment, i.e. sqrt(sum(S_i^2)/n).");
-
-#define AUDIOOP_RMS_METHODDEF    \
-    {"rms", _PyCFunction_CAST(audioop_rms), METH_FASTCALL, audioop_rms__doc__},
-
-static PyObject *
-audioop_rms_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_rms(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("rms", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("rms", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_rms_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_findfit__doc__,
-"findfit($module, fragment, reference, /)\n"
-"--\n"
-"\n"
-"Try to match reference as well as possible to a portion of fragment.");
-
-#define AUDIOOP_FINDFIT_METHODDEF    \
-    {"findfit", _PyCFunction_CAST(audioop_findfit), METH_FASTCALL, audioop_findfit__doc__},
-
-static PyObject *
-audioop_findfit_impl(PyObject *module, Py_buffer *fragment,
-                     Py_buffer *reference);
-
-static PyObject *
-audioop_findfit(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    Py_buffer reference = {NULL, NULL};
-
-    if (!_PyArg_CheckPositional("findfit", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("findfit", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[1], &reference, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&reference, 'C')) {
-        _PyArg_BadArgument("findfit", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
-    return_value = audioop_findfit_impl(module, &fragment, &reference);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-    /* Cleanup for reference */
-    if (reference.obj) {
-       PyBuffer_Release(&reference);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_findfactor__doc__,
-"findfactor($module, fragment, reference, /)\n"
-"--\n"
-"\n"
-"Return a factor F such that rms(add(fragment, mul(reference, -F))) is minimal.");
-
-#define AUDIOOP_FINDFACTOR_METHODDEF    \
-    {"findfactor", _PyCFunction_CAST(audioop_findfactor), METH_FASTCALL, audioop_findfactor__doc__},
-
-static PyObject *
-audioop_findfactor_impl(PyObject *module, Py_buffer *fragment,
-                        Py_buffer *reference);
-
-static PyObject *
-audioop_findfactor(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    Py_buffer reference = {NULL, NULL};
-
-    if (!_PyArg_CheckPositional("findfactor", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("findfactor", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[1], &reference, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&reference, 'C')) {
-        _PyArg_BadArgument("findfactor", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
-    return_value = audioop_findfactor_impl(module, &fragment, &reference);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-    /* Cleanup for reference */
-    if (reference.obj) {
-       PyBuffer_Release(&reference);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_findmax__doc__,
-"findmax($module, fragment, length, /)\n"
-"--\n"
-"\n"
-"Search fragment for a slice of specified number of samples with maximum energy.");
-
-#define AUDIOOP_FINDMAX_METHODDEF    \
-    {"findmax", _PyCFunction_CAST(audioop_findmax), METH_FASTCALL, audioop_findmax__doc__},
-
-static PyObject *
-audioop_findmax_impl(PyObject *module, Py_buffer *fragment,
-                     Py_ssize_t length);
-
-static PyObject *
-audioop_findmax(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    Py_ssize_t length;
-
-    if (!_PyArg_CheckPositional("findmax", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("findmax", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    {
-        Py_ssize_t ival = -1;
-        PyObject *iobj = _PyNumber_Index(args[1]);
-        if (iobj != NULL) {
-            ival = PyLong_AsSsize_t(iobj);
-            Py_DECREF(iobj);
-        }
-        if (ival == -1 && PyErr_Occurred()) {
-            goto exit;
-        }
-        length = ival;
-    }
-    return_value = audioop_findmax_impl(module, &fragment, length);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_avgpp__doc__,
-"avgpp($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the average peak-peak value over all samples in the fragment.");
-
-#define AUDIOOP_AVGPP_METHODDEF    \
-    {"avgpp", _PyCFunction_CAST(audioop_avgpp), METH_FASTCALL, audioop_avgpp__doc__},
-
-static PyObject *
-audioop_avgpp_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_avgpp(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("avgpp", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("avgpp", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_avgpp_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_maxpp__doc__,
-"maxpp($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the maximum peak-peak value in the sound fragment.");
-
-#define AUDIOOP_MAXPP_METHODDEF    \
-    {"maxpp", _PyCFunction_CAST(audioop_maxpp), METH_FASTCALL, audioop_maxpp__doc__},
-
-static PyObject *
-audioop_maxpp_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_maxpp(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("maxpp", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("maxpp", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_maxpp_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_cross__doc__,
-"cross($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Return the number of zero crossings in the fragment passed as an argument.");
-
-#define AUDIOOP_CROSS_METHODDEF    \
-    {"cross", _PyCFunction_CAST(audioop_cross), METH_FASTCALL, audioop_cross__doc__},
-
-static PyObject *
-audioop_cross_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_cross(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("cross", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("cross", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_cross_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_mul__doc__,
-"mul($module, fragment, width, factor, /)\n"
-"--\n"
-"\n"
-"Return a fragment that has all samples in the original fragment multiplied by the floating-point value factor.");
-
-#define AUDIOOP_MUL_METHODDEF    \
-    {"mul", _PyCFunction_CAST(audioop_mul), METH_FASTCALL, audioop_mul__doc__},
-
-static PyObject *
-audioop_mul_impl(PyObject *module, Py_buffer *fragment, int width,
-                 double factor);
-
-static PyObject *
-audioop_mul(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    double factor;
-
-    if (!_PyArg_CheckPositional("mul", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("mul", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (PyFloat_CheckExact(args[2])) {
-        factor = PyFloat_AS_DOUBLE(args[2]);
-    }
-    else
-    {
-        factor = PyFloat_AsDouble(args[2]);
-        if (factor == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-    return_value = audioop_mul_impl(module, &fragment, width, factor);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_tomono__doc__,
-"tomono($module, fragment, width, lfactor, rfactor, /)\n"
-"--\n"
-"\n"
-"Convert a stereo fragment to a mono fragment.");
-
-#define AUDIOOP_TOMONO_METHODDEF    \
-    {"tomono", _PyCFunction_CAST(audioop_tomono), METH_FASTCALL, audioop_tomono__doc__},
-
-static PyObject *
-audioop_tomono_impl(PyObject *module, Py_buffer *fragment, int width,
-                    double lfactor, double rfactor);
-
-static PyObject *
-audioop_tomono(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    double lfactor;
-    double rfactor;
-
-    if (!_PyArg_CheckPositional("tomono", nargs, 4, 4)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("tomono", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (PyFloat_CheckExact(args[2])) {
-        lfactor = PyFloat_AS_DOUBLE(args[2]);
-    }
-    else
-    {
-        lfactor = PyFloat_AsDouble(args[2]);
-        if (lfactor == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-    if (PyFloat_CheckExact(args[3])) {
-        rfactor = PyFloat_AS_DOUBLE(args[3]);
-    }
-    else
-    {
-        rfactor = PyFloat_AsDouble(args[3]);
-        if (rfactor == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-    return_value = audioop_tomono_impl(module, &fragment, width, lfactor, rfactor);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_tostereo__doc__,
-"tostereo($module, fragment, width, lfactor, rfactor, /)\n"
-"--\n"
-"\n"
-"Generate a stereo fragment from a mono fragment.");
-
-#define AUDIOOP_TOSTEREO_METHODDEF    \
-    {"tostereo", _PyCFunction_CAST(audioop_tostereo), METH_FASTCALL, audioop_tostereo__doc__},
-
-static PyObject *
-audioop_tostereo_impl(PyObject *module, Py_buffer *fragment, int width,
-                      double lfactor, double rfactor);
-
-static PyObject *
-audioop_tostereo(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    double lfactor;
-    double rfactor;
-
-    if (!_PyArg_CheckPositional("tostereo", nargs, 4, 4)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("tostereo", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (PyFloat_CheckExact(args[2])) {
-        lfactor = PyFloat_AS_DOUBLE(args[2]);
-    }
-    else
-    {
-        lfactor = PyFloat_AsDouble(args[2]);
-        if (lfactor == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-    if (PyFloat_CheckExact(args[3])) {
-        rfactor = PyFloat_AS_DOUBLE(args[3]);
-    }
-    else
-    {
-        rfactor = PyFloat_AsDouble(args[3]);
-        if (rfactor == -1.0 && PyErr_Occurred()) {
-            goto exit;
-        }
-    }
-    return_value = audioop_tostereo_impl(module, &fragment, width, lfactor, rfactor);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_add__doc__,
-"add($module, fragment1, fragment2, width, /)\n"
-"--\n"
-"\n"
-"Return a fragment which is the addition of the two samples passed as parameters.");
-
-#define AUDIOOP_ADD_METHODDEF    \
-    {"add", _PyCFunction_CAST(audioop_add), METH_FASTCALL, audioop_add__doc__},
-
-static PyObject *
-audioop_add_impl(PyObject *module, Py_buffer *fragment1,
-                 Py_buffer *fragment2, int width);
-
-static PyObject *
-audioop_add(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment1 = {NULL, NULL};
-    Py_buffer fragment2 = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("add", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment1, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment1, 'C')) {
-        _PyArg_BadArgument("add", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[1], &fragment2, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment2, 'C')) {
-        _PyArg_BadArgument("add", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[2]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_add_impl(module, &fragment1, &fragment2, width);
-
-exit:
-    /* Cleanup for fragment1 */
-    if (fragment1.obj) {
-       PyBuffer_Release(&fragment1);
-    }
-    /* Cleanup for fragment2 */
-    if (fragment2.obj) {
-       PyBuffer_Release(&fragment2);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_bias__doc__,
-"bias($module, fragment, width, bias, /)\n"
-"--\n"
-"\n"
-"Return a fragment that is the original fragment with a bias added to each sample.");
-
-#define AUDIOOP_BIAS_METHODDEF    \
-    {"bias", _PyCFunction_CAST(audioop_bias), METH_FASTCALL, audioop_bias__doc__},
-
-static PyObject *
-audioop_bias_impl(PyObject *module, Py_buffer *fragment, int width, int bias);
-
-static PyObject *
-audioop_bias(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    int bias;
-
-    if (!_PyArg_CheckPositional("bias", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("bias", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    bias = _PyLong_AsInt(args[2]);
-    if (bias == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_bias_impl(module, &fragment, width, bias);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_reverse__doc__,
-"reverse($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Reverse the samples in a fragment and returns the modified fragment.");
-
-#define AUDIOOP_REVERSE_METHODDEF    \
-    {"reverse", _PyCFunction_CAST(audioop_reverse), METH_FASTCALL, audioop_reverse__doc__},
-
-static PyObject *
-audioop_reverse_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_reverse(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("reverse", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("reverse", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_reverse_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_byteswap__doc__,
-"byteswap($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Convert big-endian samples to little-endian and vice versa.");
-
-#define AUDIOOP_BYTESWAP_METHODDEF    \
-    {"byteswap", _PyCFunction_CAST(audioop_byteswap), METH_FASTCALL, audioop_byteswap__doc__},
-
-static PyObject *
-audioop_byteswap_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_byteswap(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("byteswap", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("byteswap", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_byteswap_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_lin2lin__doc__,
-"lin2lin($module, fragment, width, newwidth, /)\n"
-"--\n"
-"\n"
-"Convert samples between 1-, 2-, 3- and 4-byte formats.");
-
-#define AUDIOOP_LIN2LIN_METHODDEF    \
-    {"lin2lin", _PyCFunction_CAST(audioop_lin2lin), METH_FASTCALL, audioop_lin2lin__doc__},
-
-static PyObject *
-audioop_lin2lin_impl(PyObject *module, Py_buffer *fragment, int width,
-                     int newwidth);
-
-static PyObject *
-audioop_lin2lin(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    int newwidth;
-
-    if (!_PyArg_CheckPositional("lin2lin", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("lin2lin", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    newwidth = _PyLong_AsInt(args[2]);
-    if (newwidth == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_lin2lin_impl(module, &fragment, width, newwidth);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_ratecv__doc__,
-"ratecv($module, fragment, width, nchannels, inrate, outrate, state,\n"
-"       weightA=1, weightB=0, /)\n"
-"--\n"
-"\n"
-"Convert the frame rate of the input fragment.");
-
-#define AUDIOOP_RATECV_METHODDEF    \
-    {"ratecv", _PyCFunction_CAST(audioop_ratecv), METH_FASTCALL, audioop_ratecv__doc__},
-
-static PyObject *
-audioop_ratecv_impl(PyObject *module, Py_buffer *fragment, int width,
-                    int nchannels, int inrate, int outrate, PyObject *state,
-                    int weightA, int weightB);
-
-static PyObject *
-audioop_ratecv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    int nchannels;
-    int inrate;
-    int outrate;
-    PyObject *state;
-    int weightA = 1;
-    int weightB = 0;
-
-    if (!_PyArg_CheckPositional("ratecv", nargs, 6, 8)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("ratecv", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    nchannels = _PyLong_AsInt(args[2]);
-    if (nchannels == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    inrate = _PyLong_AsInt(args[3]);
-    if (inrate == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    outrate = _PyLong_AsInt(args[4]);
-    if (outrate == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    state = args[5];
-    if (nargs < 7) {
-        goto skip_optional;
-    }
-    weightA = _PyLong_AsInt(args[6]);
-    if (weightA == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (nargs < 8) {
-        goto skip_optional;
-    }
-    weightB = _PyLong_AsInt(args[7]);
-    if (weightB == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-skip_optional:
-    return_value = audioop_ratecv_impl(module, &fragment, width, nchannels, inrate, outrate, state, weightA, weightB);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_lin2ulaw__doc__,
-"lin2ulaw($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Convert samples in the audio fragment to u-LAW encoding.");
-
-#define AUDIOOP_LIN2ULAW_METHODDEF    \
-    {"lin2ulaw", _PyCFunction_CAST(audioop_lin2ulaw), METH_FASTCALL, audioop_lin2ulaw__doc__},
-
-static PyObject *
-audioop_lin2ulaw_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_lin2ulaw(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("lin2ulaw", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("lin2ulaw", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_lin2ulaw_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_ulaw2lin__doc__,
-"ulaw2lin($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Convert sound fragments in u-LAW encoding to linearly encoded sound fragments.");
-
-#define AUDIOOP_ULAW2LIN_METHODDEF    \
-    {"ulaw2lin", _PyCFunction_CAST(audioop_ulaw2lin), METH_FASTCALL, audioop_ulaw2lin__doc__},
-
-static PyObject *
-audioop_ulaw2lin_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_ulaw2lin(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("ulaw2lin", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("ulaw2lin", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_ulaw2lin_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_lin2alaw__doc__,
-"lin2alaw($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Convert samples in the audio fragment to a-LAW encoding.");
-
-#define AUDIOOP_LIN2ALAW_METHODDEF    \
-    {"lin2alaw", _PyCFunction_CAST(audioop_lin2alaw), METH_FASTCALL, audioop_lin2alaw__doc__},
-
-static PyObject *
-audioop_lin2alaw_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_lin2alaw(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("lin2alaw", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("lin2alaw", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_lin2alaw_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_alaw2lin__doc__,
-"alaw2lin($module, fragment, width, /)\n"
-"--\n"
-"\n"
-"Convert sound fragments in a-LAW encoding to linearly encoded sound fragments.");
-
-#define AUDIOOP_ALAW2LIN_METHODDEF    \
-    {"alaw2lin", _PyCFunction_CAST(audioop_alaw2lin), METH_FASTCALL, audioop_alaw2lin__doc__},
-
-static PyObject *
-audioop_alaw2lin_impl(PyObject *module, Py_buffer *fragment, int width);
-
-static PyObject *
-audioop_alaw2lin(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-
-    if (!_PyArg_CheckPositional("alaw2lin", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("alaw2lin", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = audioop_alaw2lin_impl(module, &fragment, width);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_lin2adpcm__doc__,
-"lin2adpcm($module, fragment, width, state, /)\n"
-"--\n"
-"\n"
-"Convert samples to 4 bit Intel/DVI ADPCM encoding.");
-
-#define AUDIOOP_LIN2ADPCM_METHODDEF    \
-    {"lin2adpcm", _PyCFunction_CAST(audioop_lin2adpcm), METH_FASTCALL, audioop_lin2adpcm__doc__},
-
-static PyObject *
-audioop_lin2adpcm_impl(PyObject *module, Py_buffer *fragment, int width,
-                       PyObject *state);
-
-static PyObject *
-audioop_lin2adpcm(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    PyObject *state;
-
-    if (!_PyArg_CheckPositional("lin2adpcm", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("lin2adpcm", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    state = args[2];
-    return_value = audioop_lin2adpcm_impl(module, &fragment, width, state);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-
-PyDoc_STRVAR(audioop_adpcm2lin__doc__,
-"adpcm2lin($module, fragment, width, state, /)\n"
-"--\n"
-"\n"
-"Decode an Intel/DVI ADPCM coded fragment to a linear fragment.");
-
-#define AUDIOOP_ADPCM2LIN_METHODDEF    \
-    {"adpcm2lin", _PyCFunction_CAST(audioop_adpcm2lin), METH_FASTCALL, audioop_adpcm2lin__doc__},
-
-static PyObject *
-audioop_adpcm2lin_impl(PyObject *module, Py_buffer *fragment, int width,
-                       PyObject *state);
-
-static PyObject *
-audioop_adpcm2lin(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    Py_buffer fragment = {NULL, NULL};
-    int width;
-    PyObject *state;
-
-    if (!_PyArg_CheckPositional("adpcm2lin", nargs, 3, 3)) {
-        goto exit;
-    }
-    if (PyObject_GetBuffer(args[0], &fragment, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    if (!PyBuffer_IsContiguous(&fragment, 'C')) {
-        _PyArg_BadArgument("adpcm2lin", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
-    width = _PyLong_AsInt(args[1]);
-    if (width == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    state = args[2];
-    return_value = audioop_adpcm2lin_impl(module, &fragment, width, state);
-
-exit:
-    /* Cleanup for fragment */
-    if (fragment.obj) {
-       PyBuffer_Release(&fragment);
-    }
-
-    return return_value;
-}
-/*[clinic end generated code: output=9a7e36f1179f0223 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/binascii.c.h b/Modules/clinic/binascii.c.h
index 63566dfb10e74f..1adca415dfee12 100644
--- a/Modules/clinic/binascii.c.h
+++ b/Modules/clinic/binascii.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(binascii_a2b_uu__doc__,
 "a2b_uu($module, data, /)\n"
@@ -92,10 +92,6 @@ binascii_b2a_uu(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_uu", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
@@ -243,10 +239,6 @@ binascii_b2a_base64(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_base64", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
@@ -291,10 +283,6 @@ binascii_crc_hqx(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("crc_hqx", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     crc = (unsigned int)PyLong_AsUnsignedLongMask(args[1]);
     if (crc == (unsigned int)-1 && PyErr_Occurred()) {
         goto exit;
@@ -336,10 +324,6 @@ binascii_crc32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("crc32", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -435,10 +419,6 @@ binascii_b2a_hex(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_hex", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -448,7 +428,7 @@ binascii_b2a_hex(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
             goto skip_optional_pos;
         }
     }
-    bytes_per_sep = _PyLong_AsInt(args[2]);
+    bytes_per_sep = PyLong_AsInt(args[2]);
     if (bytes_per_sep == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -528,10 +508,6 @@ binascii_hexlify(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("hexlify", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -541,7 +517,7 @@ binascii_hexlify(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
             goto skip_optional_pos;
         }
     }
-    bytes_per_sep = _PyLong_AsInt(args[2]);
+    bytes_per_sep = PyLong_AsInt(args[2]);
     if (bytes_per_sep == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -755,10 +731,6 @@ binascii_b2a_qp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("b2a_qp", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -795,4 +767,4 @@ binascii_b2a_qp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
 
     return return_value;
 }
-/*[clinic end generated code: output=ab156917c9db79d2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=968767b663ed889d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/cmathmodule.c.h b/Modules/clinic/cmathmodule.c.h
index 941448e76e80de..b709204af1d959 100644
--- a/Modules/clinic/cmathmodule.c.h
+++ b/Modules/clinic/cmathmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(cmath_acos__doc__,
 "acos($module, z, /)\n"
@@ -982,4 +982,4 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=87f609786ef270cd input=a9049054013a1b77]*/
+/*[clinic end generated code: output=364093af55bfe53f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/fcntlmodule.c.h b/Modules/clinic/fcntlmodule.c.h
index 20eb50b0e76b38..5dc2fc068d0f7e 100644
--- a/Modules/clinic/fcntlmodule.c.h
+++ b/Modules/clinic/fcntlmodule.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_fileutils.h"     // _PyLong_FileDescriptor_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(fcntl_fcntl__doc__,
 "fcntl($module, fd, cmd, arg=0, /)\n"
@@ -44,7 +41,7 @@ fcntl_fcntl(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    code = _PyLong_AsInt(args[1]);
+    code = PyLong_AsInt(args[1]);
     if (code == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -164,7 +161,7 @@ fcntl_flock(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    code = _PyLong_AsInt(args[1]);
+    code = PyLong_AsInt(args[1]);
     if (code == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -224,7 +221,7 @@ fcntl_lockf(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    code = _PyLong_AsInt(args[1]);
+    code = PyLong_AsInt(args[1]);
     if (code == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -239,7 +236,7 @@ fcntl_lockf(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 5) {
         goto skip_optional;
     }
-    whence = _PyLong_AsInt(args[4]);
+    whence = PyLong_AsInt(args[4]);
     if (whence == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -249,4 +246,4 @@ fcntl_lockf(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=1db859412172dd53 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=732e33ba92042031 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/gcmodule.c.h b/Modules/clinic/gcmodule.c.h
index 2d18e2ee0978e0..ad4469350447cb 100644
--- a/Modules/clinic/gcmodule.c.h
+++ b/Modules/clinic/gcmodule.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(gc_enable__doc__,
 "enable($module, /)\n"
@@ -131,7 +132,7 @@ gc_collect(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    generation = _PyLong_AsInt(args[0]);
+    generation = PyLong_AsInt(args[0]);
     if (generation == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -175,7 +176,7 @@ gc_set_debug(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int flags;
 
-    flags = _PyLong_AsInt(arg);
+    flags = PyLong_AsInt(arg);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -424,4 +425,4 @@ gc_get_freeze_count(PyObject *module, PyObject *Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=66432ac0e17fd04f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5c345e7b4ce6085a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/grpmodule.c.h b/Modules/clinic/grpmodule.c.h
index 4914bc9abd67b5..1da061f3fd8eb1 100644
--- a/Modules/clinic/grpmodule.c.h
+++ b/Modules/clinic/grpmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(grp_getgrgid__doc__,
 "getgrgid($module, /, id)\n"
@@ -119,9 +119,6 @@ grp_getgrnam(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         _PyArg_BadArgument("getgrnam", "argument 'name'", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     name = args[0];
     return_value = grp_getgrnam_impl(module, name);
 
@@ -149,4 +146,4 @@ grp_getgrall(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return grp_getgrall_impl(module);
 }
-/*[clinic end generated code: output=0916fdbcdeaf5d7d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2f7011384604d38d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/itertoolsmodule.c.h b/Modules/clinic/itertoolsmodule.c.h
index 32278bf715aa98..fa2c5e0e922387 100644
--- a/Modules/clinic/itertoolsmodule.c.h
+++ b/Modules/clinic/itertoolsmodule.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(batched_new__doc__,
 "batched(iterable, n)\n"
@@ -913,4 +914,4 @@ itertools_count(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=111cbd102c2a23c9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=782fe7e30733779b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/mathmodule.c.h b/Modules/clinic/mathmodule.c.h
index bc5bbceb4c92b6..ca14c03f16f706 100644
--- a/Modules/clinic/mathmodule.c.h
+++ b/Modules/clinic/mathmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(math_ceil__doc__,
 "ceil($module, x, /)\n"
@@ -826,25 +826,59 @@ math_comb(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 }
 
 PyDoc_STRVAR(math_nextafter__doc__,
-"nextafter($module, x, y, /)\n"
+"nextafter($module, x, y, /, *, steps=None)\n"
 "--\n"
 "\n"
-"Return the next floating-point value after x towards y.");
+"Return the floating-point value the given number of steps after x towards y.\n"
+"\n"
+"If steps is not specified or is None, it defaults to 1.\n"
+"\n"
+"Raises a TypeError, if x or y is not a double, or if steps is not an integer.\n"
+"Raises ValueError if steps is negative.");
 
 #define MATH_NEXTAFTER_METHODDEF    \
-    {"nextafter", _PyCFunction_CAST(math_nextafter), METH_FASTCALL, math_nextafter__doc__},
+    {"nextafter", _PyCFunction_CAST(math_nextafter), METH_FASTCALL|METH_KEYWORDS, math_nextafter__doc__},
 
 static PyObject *
-math_nextafter_impl(PyObject *module, double x, double y);
+math_nextafter_impl(PyObject *module, double x, double y, PyObject *steps);
 
 static PyObject *
-math_nextafter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+math_nextafter(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(steps), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "", "steps", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "nextafter",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     double x;
     double y;
+    PyObject *steps = Py_None;
 
-    if (!_PyArg_CheckPositional("nextafter", nargs, 2, 2)) {
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
+    if (!args) {
         goto exit;
     }
     if (PyFloat_CheckExact(args[0])) {
@@ -867,7 +901,12 @@ math_nextafter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
             goto exit;
         }
     }
-    return_value = math_nextafter_impl(module, x, y);
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    steps = args[2];
+skip_optional_kwonly:
+    return_value = math_nextafter_impl(module, x, y, steps);
 
 exit:
     return return_value;
@@ -911,4 +950,4 @@ math_ulp(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=a6437a3ba18c486a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6b2eeaed8d8a76d5 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/md5module.c.h b/Modules/clinic/md5module.c.h
index b4602104f18042..7d4d3108dab9b6 100644
--- a/Modules/clinic/md5module.c.h
+++ b/Modules/clinic/md5module.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(MD5Type_copy__doc__,
 "copy($self, /)\n"
@@ -148,4 +148,4 @@ _md5_md5(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b4924c9905cc9f34 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bfadda44914804a8 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/overlapped.c.h b/Modules/clinic/overlapped.c.h
index 9d9f2cbf6afdc2..8b285e4a8f0a72 100644
--- a/Modules/clinic/overlapped.c.h
+++ b/Modules/clinic/overlapped.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_long.h"          // _PyLong_UnsignedLong_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_overlapped_CreateIoCompletionPort__doc__,
 "CreateIoCompletionPort($module, handle, port, key, concurrency, /)\n"
@@ -273,7 +274,7 @@ PyDoc_STRVAR(_overlapped_CreateEvent__doc__,
 static PyObject *
 _overlapped_CreateEvent_impl(PyObject *module, PyObject *EventAttributes,
                              BOOL ManualReset, BOOL InitialState,
-                             const Py_UNICODE *Name);
+                             const wchar_t *Name);
 
 static PyObject *
 _overlapped_CreateEvent(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
@@ -282,17 +283,17 @@ _overlapped_CreateEvent(PyObject *module, PyObject *const *args, Py_ssize_t narg
     PyObject *EventAttributes;
     BOOL ManualReset;
     BOOL InitialState;
-    const Py_UNICODE *Name = NULL;
+    const wchar_t *Name = NULL;
 
     if (!_PyArg_CheckPositional("CreateEvent", nargs, 4, 4)) {
         goto exit;
     }
     EventAttributes = args[0];
-    ManualReset = _PyLong_AsInt(args[1]);
+    ManualReset = PyLong_AsInt(args[1]);
     if (ManualReset == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    InitialState = _PyLong_AsInt(args[2]);
+    InitialState = PyLong_AsInt(args[2]);
     if (InitialState == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -402,7 +403,7 @@ _overlapped_BindLocal(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!Socket && PyErr_Occurred()) {
         goto exit;
     }
-    Family = _PyLong_AsInt(args[1]);
+    Family = PyLong_AsInt(args[1]);
     if (Family == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -546,7 +547,7 @@ _overlapped_Overlapped_getresult(OverlappedObject *self, PyObject *const *args,
     if (nargs < 1) {
         goto skip_optional;
     }
-    wait = _PyLong_AsInt(args[0]);
+    wait = PyLong_AsInt(args[0]);
     if (wait == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -623,10 +624,6 @@ _overlapped_Overlapped_ReadFileInto(OverlappedObject *self, PyObject *const *arg
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("ReadFileInto", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _overlapped_Overlapped_ReadFileInto_impl(self, handle, &bufobj);
 
 exit:
@@ -714,10 +711,6 @@ _overlapped_Overlapped_WSARecvInto(OverlappedObject *self, PyObject *const *args
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSARecvInto", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &flags)) {
         goto exit;
     }
@@ -762,10 +755,6 @@ _overlapped_Overlapped_WriteFile(OverlappedObject *self, PyObject *const *args,
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WriteFile", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _overlapped_Overlapped_WriteFile_impl(self, handle, &bufobj);
 
 exit:
@@ -808,10 +797,6 @@ _overlapped_Overlapped_WSASend(OverlappedObject *self, PyObject *const *args, Py
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSASend", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &flags)) {
         goto exit;
     }
@@ -1041,13 +1026,13 @@ PyDoc_STRVAR(_overlapped_Overlapped_ConnectPipe__doc__,
 
 static PyObject *
 _overlapped_Overlapped_ConnectPipe_impl(OverlappedObject *self,
-                                        const Py_UNICODE *Address);
+                                        const wchar_t *Address);
 
 static PyObject *
 _overlapped_Overlapped_ConnectPipe(OverlappedObject *self, PyObject *arg)
 {
     PyObject *return_value = NULL;
-    const Py_UNICODE *Address = NULL;
+    const wchar_t *Address = NULL;
 
     if (!PyUnicode_Check(arg)) {
         _PyArg_BadArgument("ConnectPipe", "argument", "str", arg);
@@ -1137,10 +1122,6 @@ _overlapped_Overlapped_WSASendTo(OverlappedObject *self, PyObject *const *args,
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSASendTo", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &flags)) {
         goto exit;
     }
@@ -1238,10 +1219,6 @@ _overlapped_Overlapped_WSARecvFromInto(OverlappedObject *self, PyObject *const *
     if (PyObject_GetBuffer(args[1], &bufobj, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bufobj, 'C')) {
-        _PyArg_BadArgument("WSARecvFromInto", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!_PyLong_UnsignedLong_Converter(args[2], &size)) {
         goto exit;
     }
@@ -1262,4 +1239,4 @@ _overlapped_Overlapped_WSARecvFromInto(OverlappedObject *self, PyObject *const *
 
     return return_value;
 }
-/*[clinic end generated code: output=b2e89694b8de3d00 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=958cbddbcc355f47 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 8b0550d832fc0a..9d6cd337f4a2f4 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -3,10 +3,13 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_fileutils.h"     // _PyLong_FileDescriptor_Converter()
+#include "pycore_long.h"          // _PyLong_UnsignedInt_Converter()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(os_stat__doc__,
 "stat($module, /, path, *, dir_fd=None, follow_symlinks=True)\n"
@@ -262,7 +265,7 @@ os_access(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     if (!path_converter(args[0], &path)) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[1]);
+    mode = PyLong_AsInt(args[1]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -327,7 +330,7 @@ os_ttyname(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int fd;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -568,7 +571,7 @@ os_chmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     if (!path_converter(args[0], &path)) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[1]);
+    mode = PyLong_AsInt(args[1]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -658,11 +661,11 @@ os_fchmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     if (!args) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[1]);
+    mode = PyLong_AsInt(args[1]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -731,7 +734,7 @@ os_lchmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     if (!path_converter(args[0], &path)) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[1]);
+    mode = PyLong_AsInt(args[1]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1284,7 +1287,7 @@ os_fchown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     if (!args) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1715,6 +1718,70 @@ os_listmounts(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 
 #if defined(MS_WINDOWS)
 
+PyDoc_STRVAR(os__path_isdevdrive__doc__,
+"_path_isdevdrive($module, /, path)\n"
+"--\n"
+"\n"
+"Determines whether the specified path is on a Windows Dev Drive.");
+
+#define OS__PATH_ISDEVDRIVE_METHODDEF    \
+    {"_path_isdevdrive", _PyCFunction_CAST(os__path_isdevdrive), METH_FASTCALL|METH_KEYWORDS, os__path_isdevdrive__doc__},
+
+static PyObject *
+os__path_isdevdrive_impl(PyObject *module, path_t *path);
+
+static PyObject *
+os__path_isdevdrive(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(path), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"path", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "_path_isdevdrive",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    path_t path = PATH_T_INITIALIZE("_path_isdevdrive", "path", 0, 0);
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    return_value = os__path_isdevdrive_impl(module, &path);
+
+exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
+    return return_value;
+}
+
+#endif /* defined(MS_WINDOWS) */
+
+#if defined(MS_WINDOWS)
+
 PyDoc_STRVAR(os__getfullpathname__doc__,
 "_getfullpathname($module, path, /)\n"
 "--\n"
@@ -1782,6 +1849,40 @@ os__getfinalpathname(PyObject *module, PyObject *arg)
 
 #if defined(MS_WINDOWS)
 
+PyDoc_STRVAR(os__findfirstfile__doc__,
+"_findfirstfile($module, path, /)\n"
+"--\n"
+"\n"
+"A function to get the real file name without accessing the file in Windows.");
+
+#define OS__FINDFIRSTFILE_METHODDEF    \
+    {"_findfirstfile", (PyCFunction)os__findfirstfile, METH_O, os__findfirstfile__doc__},
+
+static PyObject *
+os__findfirstfile_impl(PyObject *module, path_t *path);
+
+static PyObject *
+os__findfirstfile(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    path_t path = PATH_T_INITIALIZE("_findfirstfile", "path", 0, 0);
+
+    if (!path_converter(arg, &path)) {
+        goto exit;
+    }
+    return_value = os__findfirstfile_impl(module, &path);
+
+exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
+    return return_value;
+}
+
+#endif /* defined(MS_WINDOWS) */
+
+#if defined(MS_WINDOWS)
+
 PyDoc_STRVAR(os__getvolumepathname__doc__,
 "_getvolumepathname($module, /, path)\n"
 "--\n"
@@ -1911,7 +2012,7 @@ os__path_splitroot(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
 #if defined(MS_WINDOWS)
 
 PyDoc_STRVAR(os__path_isdir__doc__,
-"_path_isdir($module, /, path)\n"
+"_path_isdir($module, /, s)\n"
 "--\n"
 "\n"
 "Return true if the pathname refers to an existing directory.");
@@ -1920,7 +2021,7 @@ PyDoc_STRVAR(os__path_isdir__doc__,
     {"_path_isdir", _PyCFunction_CAST(os__path_isdir), METH_FASTCALL|METH_KEYWORDS, os__path_isdir__doc__},
 
 static PyObject *
-os__path_isdir_impl(PyObject *module, PyObject *path);
+os__path_isdir_impl(PyObject *module, PyObject *s);
 
 static PyObject *
 os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -1935,7 +2036,7 @@ os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(path), },
+        .ob_item = { &_Py_ID(s), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1944,7 +2045,7 @@ os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     #  define KWTUPLE NULL
     #endif  // !Py_BUILD_CORE
 
-    static const char * const _keywords[] = {"path", NULL};
+    static const char * const _keywords[] = {"s", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
         .fname = "_path_isdir",
@@ -1952,14 +2053,14 @@ os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *path;
+    PyObject *s;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    path = args[0];
-    return_value = os__path_isdir_impl(module, path);
+    s = args[0];
+    return_value = os__path_isdir_impl(module, s);
 
 exit:
     return return_value;
@@ -2265,7 +2366,7 @@ os_mkdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         goto skip_optional_pos;
     }
     if (args[1]) {
-        mode = _PyLong_AsInt(args[1]);
+        mode = PyLong_AsInt(args[1]);
         if (mode == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -2310,7 +2411,7 @@ os_nice(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int increment;
 
-    increment = _PyLong_AsInt(arg);
+    increment = PyLong_AsInt(arg);
     if (increment == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2373,11 +2474,11 @@ os_getpriority(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     if (!args) {
         goto exit;
     }
-    which = _PyLong_AsInt(args[0]);
+    which = PyLong_AsInt(args[0]);
     if (which == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    who = _PyLong_AsInt(args[1]);
+    who = PyLong_AsInt(args[1]);
     if (who == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2441,15 +2542,15 @@ os_setpriority(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     if (!args) {
         goto exit;
     }
-    which = _PyLong_AsInt(args[0]);
+    which = PyLong_AsInt(args[0]);
     if (which == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    who = _PyLong_AsInt(args[1]);
+    who = PyLong_AsInt(args[1]);
     if (who == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    priority = _PyLong_AsInt(args[2]);
+    priority = PyLong_AsInt(args[2]);
     if (priority == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -2729,7 +2830,7 @@ PyDoc_STRVAR(os_system__doc__,
     {"system", _PyCFunction_CAST(os_system), METH_FASTCALL|METH_KEYWORDS, os_system__doc__},
 
 static long
-os_system_impl(PyObject *module, const Py_UNICODE *command);
+os_system_impl(PyObject *module, const wchar_t *command);
 
 static PyObject *
 os_system(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -2761,7 +2862,7 @@ os_system(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    const Py_UNICODE *command = NULL;
+    const wchar_t *command = NULL;
     long _return_value;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
@@ -2880,7 +2981,7 @@ os_umask(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int mask;
 
-    mask = _PyLong_AsInt(arg);
+    mask = PyLong_AsInt(arg);
     if (mask == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3234,7 +3335,7 @@ os__exit(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3695,7 +3796,7 @@ os_spawnv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("spawnv", nargs, 3, 3)) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[0]);
+    mode = PyLong_AsInt(args[0]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3750,7 +3851,7 @@ os_spawnve(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("spawnve", nargs, 4, 4)) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[0]);
+    mode = PyLong_AsInt(args[0]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -3959,7 +4060,7 @@ os_sched_get_priority_max(PyObject *module, PyObject *const *args, Py_ssize_t na
     if (!args) {
         goto exit;
     }
-    policy = _PyLong_AsInt(args[0]);
+    policy = PyLong_AsInt(args[0]);
     if (policy == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -4021,7 +4122,7 @@ os_sched_get_priority_min(PyObject *module, PyObject *const *args, Py_ssize_t na
     if (!args) {
         goto exit;
     }
-    policy = _PyLong_AsInt(args[0]);
+    policy = PyLong_AsInt(args[0]);
     if (policy == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -4580,7 +4681,7 @@ os_getgrouplist(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
-    basegid = _PyLong_AsInt(args[1]);
+    basegid = PyLong_AsInt(args[1]);
     if (basegid == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -4698,7 +4799,7 @@ os_initgroups(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!PyUnicode_FSConverter(args[0], &oname)) {
         goto exit;
     }
-    gid = _PyLong_AsInt(args[1]);
+    gid = PyLong_AsInt(args[1]);
     if (gid == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -5014,7 +5115,7 @@ os_plock(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int op;
 
-    op = _PyLong_AsInt(arg);
+    op = PyLong_AsInt(arg);
     if (op == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -5292,7 +5393,7 @@ os_wait3(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     if (!args) {
         goto exit;
     }
-    options = _PyLong_AsInt(args[0]);
+    options = PyLong_AsInt(args[0]);
     if (options == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -5635,7 +5736,7 @@ os_setns(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    nstype = _PyLong_AsInt(args[1]);
+    nstype = PyLong_AsInt(args[1]);
     if (nstype == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -5701,7 +5802,7 @@ os_unshare(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     if (!args) {
         goto exit;
     }
-    flags = _PyLong_AsInt(args[0]);
+    flags = PyLong_AsInt(args[0]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -5896,8 +5997,6 @@ os_symlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
 
 #endif /* defined(HAVE_SYMLINK) */
 
-#if defined(HAVE_TIMES)
-
 PyDoc_STRVAR(os_times__doc__,
 "times($module, /)\n"
 "--\n"
@@ -5920,7 +6019,375 @@ os_times(PyObject *module, PyObject *Py_UNUSED(ignored))
     return os_times_impl(module);
 }
 
-#endif /* defined(HAVE_TIMES) */
+#if defined(HAVE_TIMERFD_CREATE)
+
+PyDoc_STRVAR(os_timerfd_create__doc__,
+"timerfd_create($module, clockid, /, *, flags=0)\n"
+"--\n"
+"\n"
+"Create and return a timer file descriptor.\n"
+"\n"
+"  clockid\n"
+"    A valid clock ID constant as timer file descriptor.\n"
+"\n"
+"    time.CLOCK_REALTIME\n"
+"    time.CLOCK_MONOTONIC\n"
+"    time.CLOCK_BOOTTIME\n"
+"  flags\n"
+"    0 or a bit mask of os.TFD_NONBLOCK or os.TFD_CLOEXEC.\n"
+"\n"
+"    os.TFD_NONBLOCK\n"
+"        If *TFD_NONBLOCK* is set as a flag, read doesn\'t blocks.\n"
+"        If *TFD_NONBLOCK* is not set as a flag, read block until the timer fires.\n"
+"\n"
+"    os.TFD_CLOEXEC\n"
+"        If *TFD_CLOEXEC* is set as a flag, enable the close-on-exec flag");
+
+#define OS_TIMERFD_CREATE_METHODDEF    \
+    {"timerfd_create", _PyCFunction_CAST(os_timerfd_create), METH_FASTCALL|METH_KEYWORDS, os_timerfd_create__doc__},
+
+static PyObject *
+os_timerfd_create_impl(PyObject *module, int clockid, int flags);
+
+static PyObject *
+os_timerfd_create(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(flags), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "flags", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "timerfd_create",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[2];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    int clockid;
+    int flags = 0;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    clockid = PyLong_AsInt(args[0]);
+    if (clockid == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    flags = PyLong_AsInt(args[1]);
+    if (flags == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    return_value = os_timerfd_create_impl(module, clockid, flags);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_TIMERFD_CREATE) */
+
+#if defined(HAVE_TIMERFD_CREATE)
+
+PyDoc_STRVAR(os_timerfd_settime__doc__,
+"timerfd_settime($module, fd, /, *, flags=0, initial=0.0, interval=0.0)\n"
+"--\n"
+"\n"
+"Alter a timer file descriptor\'s internal timer in seconds.\n"
+"\n"
+"  fd\n"
+"    A timer file descriptor.\n"
+"  flags\n"
+"    0 or a bit mask of TFD_TIMER_ABSTIME or TFD_TIMER_CANCEL_ON_SET.\n"
+"  initial\n"
+"    The initial expiration time, in seconds.\n"
+"  interval\n"
+"    The timer\'s interval, in seconds.");
+
+#define OS_TIMERFD_SETTIME_METHODDEF    \
+    {"timerfd_settime", _PyCFunction_CAST(os_timerfd_settime), METH_FASTCALL|METH_KEYWORDS, os_timerfd_settime__doc__},
+
+static PyObject *
+os_timerfd_settime_impl(PyObject *module, int fd, int flags, double initial,
+                        double interval);
+
+static PyObject *
+os_timerfd_settime(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(flags), &_Py_ID(initial), &_Py_ID(interval), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "flags", "initial", "interval", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "timerfd_settime",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    int fd;
+    int flags = 0;
+    double initial = 0.0;
+    double interval = 0.0;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[1]) {
+        flags = PyLong_AsInt(args[1]);
+        if (flags == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (args[2]) {
+        if (PyFloat_CheckExact(args[2])) {
+            initial = PyFloat_AS_DOUBLE(args[2]);
+        }
+        else
+        {
+            initial = PyFloat_AsDouble(args[2]);
+            if (initial == -1.0 && PyErr_Occurred()) {
+                goto exit;
+            }
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (PyFloat_CheckExact(args[3])) {
+        interval = PyFloat_AS_DOUBLE(args[3]);
+    }
+    else
+    {
+        interval = PyFloat_AsDouble(args[3]);
+        if (interval == -1.0 && PyErr_Occurred()) {
+            goto exit;
+        }
+    }
+skip_optional_kwonly:
+    return_value = os_timerfd_settime_impl(module, fd, flags, initial, interval);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_TIMERFD_CREATE) */
+
+#if defined(HAVE_TIMERFD_CREATE)
+
+PyDoc_STRVAR(os_timerfd_settime_ns__doc__,
+"timerfd_settime_ns($module, fd, /, *, flags=0, initial=0, interval=0)\n"
+"--\n"
+"\n"
+"Alter a timer file descriptor\'s internal timer in nanoseconds.\n"
+"\n"
+"  fd\n"
+"    A timer file descriptor.\n"
+"  flags\n"
+"    0 or a bit mask of TFD_TIMER_ABSTIME or TFD_TIMER_CANCEL_ON_SET.\n"
+"  initial\n"
+"    initial expiration timing in seconds.\n"
+"  interval\n"
+"    interval for the timer in seconds.");
+
+#define OS_TIMERFD_SETTIME_NS_METHODDEF    \
+    {"timerfd_settime_ns", _PyCFunction_CAST(os_timerfd_settime_ns), METH_FASTCALL|METH_KEYWORDS, os_timerfd_settime_ns__doc__},
+
+static PyObject *
+os_timerfd_settime_ns_impl(PyObject *module, int fd, int flags,
+                           long long initial, long long interval);
+
+static PyObject *
+os_timerfd_settime_ns(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(flags), &_Py_ID(initial), &_Py_ID(interval), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "flags", "initial", "interval", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "timerfd_settime_ns",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    int fd;
+    int flags = 0;
+    long long initial = 0;
+    long long interval = 0;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[1]) {
+        flags = PyLong_AsInt(args[1]);
+        if (flags == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (args[2]) {
+        initial = PyLong_AsLongLong(args[2]);
+        if (initial == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    interval = PyLong_AsLongLong(args[3]);
+    if (interval == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    return_value = os_timerfd_settime_ns_impl(module, fd, flags, initial, interval);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_TIMERFD_CREATE) */
+
+#if defined(HAVE_TIMERFD_CREATE)
+
+PyDoc_STRVAR(os_timerfd_gettime__doc__,
+"timerfd_gettime($module, fd, /)\n"
+"--\n"
+"\n"
+"Return a tuple of a timer file descriptor\'s (interval, next expiration) in float seconds.\n"
+"\n"
+"  fd\n"
+"    A timer file descriptor.");
+
+#define OS_TIMERFD_GETTIME_METHODDEF    \
+    {"timerfd_gettime", (PyCFunction)os_timerfd_gettime, METH_O, os_timerfd_gettime__doc__},
+
+static PyObject *
+os_timerfd_gettime_impl(PyObject *module, int fd);
+
+static PyObject *
+os_timerfd_gettime(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    int fd;
+
+    if (!_PyLong_FileDescriptor_Converter(arg, &fd)) {
+        goto exit;
+    }
+    return_value = os_timerfd_gettime_impl(module, fd);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_TIMERFD_CREATE) */
+
+#if defined(HAVE_TIMERFD_CREATE)
+
+PyDoc_STRVAR(os_timerfd_gettime_ns__doc__,
+"timerfd_gettime_ns($module, fd, /)\n"
+"--\n"
+"\n"
+"Return a tuple of a timer file descriptor\'s (interval, next expiration) in nanoseconds.\n"
+"\n"
+"  fd\n"
+"    A timer file descriptor.");
+
+#define OS_TIMERFD_GETTIME_NS_METHODDEF    \
+    {"timerfd_gettime_ns", (PyCFunction)os_timerfd_gettime_ns, METH_O, os_timerfd_gettime_ns__doc__},
+
+static PyObject *
+os_timerfd_gettime_ns_impl(PyObject *module, int fd);
+
+static PyObject *
+os_timerfd_gettime_ns(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    int fd;
+
+    if (!_PyLong_FileDescriptor_Converter(arg, &fd)) {
+        goto exit;
+    }
+    return_value = os_timerfd_gettime_ns_impl(module, fd);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_TIMERFD_CREATE) */
 
 #if defined(HAVE_GETSID)
 
@@ -6028,7 +6495,7 @@ os_tcgetpgrp(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int fd;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6134,7 +6601,7 @@ os_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     if (!path_converter(args[0], &path)) {
         goto exit;
     }
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6142,7 +6609,7 @@ os_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         goto skip_optional_pos;
     }
     if (args[2]) {
-        mode = _PyLong_AsInt(args[2]);
+        mode = PyLong_AsInt(args[2]);
         if (mode == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -6219,7 +6686,7 @@ os_close(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     if (!args) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6251,11 +6718,11 @@ os_closerange(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("closerange", nargs, 2, 2)) {
         goto exit;
     }
-    fd_low = _PyLong_AsInt(args[0]);
+    fd_low = PyLong_AsInt(args[0]);
     if (fd_low == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    fd_high = _PyLong_AsInt(args[1]);
+    fd_high = PyLong_AsInt(args[1]);
     if (fd_high == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6284,7 +6751,7 @@ os_dup(PyObject *module, PyObject *arg)
     int fd;
     int _return_value;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6352,11 +6819,11 @@ os_dup2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     if (!args) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    fd2 = _PyLong_AsInt(args[1]);
+    fd2 = PyLong_AsInt(args[1]);
     if (fd2 == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6412,11 +6879,11 @@ os_lockf(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("lockf", nargs, 3, 3)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    command = _PyLong_AsInt(args[1]);
+    command = PyLong_AsInt(args[1]);
     if (command == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6432,13 +6899,22 @@ os_lockf(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 #endif /* defined(HAVE_LOCKF) */
 
 PyDoc_STRVAR(os_lseek__doc__,
-"lseek($module, fd, position, how, /)\n"
+"lseek($module, fd, position, whence, /)\n"
 "--\n"
 "\n"
 "Set the position of a file descriptor.  Return the new position.\n"
 "\n"
-"Return the new cursor position in number of bytes\n"
-"relative to the beginning of the file.");
+"  fd\n"
+"    An open file descriptor, as returned by os.open().\n"
+"  position\n"
+"    Position, interpreted relative to \'whence\'.\n"
+"  whence\n"
+"    The relative position to seek from. Valid values are:\n"
+"    - SEEK_SET: seek from the start of the file.\n"
+"    - SEEK_CUR: seek from the current file position.\n"
+"    - SEEK_END: seek from the end of the file.\n"
+"\n"
+"The return value is the number of bytes relative to the beginning of the file.");
 
 #define OS_LSEEK_METHODDEF    \
     {"lseek", _PyCFunction_CAST(os_lseek), METH_FASTCALL, os_lseek__doc__},
@@ -6458,14 +6934,14 @@ os_lseek(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("lseek", nargs, 3, 3)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (!Py_off_t_converter(args[1], &position)) {
         goto exit;
     }
-    how = _PyLong_AsInt(args[2]);
+    how = PyLong_AsInt(args[2]);
     if (how == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6501,7 +6977,7 @@ os_read(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("read", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6556,7 +7032,7 @@ os_readv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("readv", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6601,7 +7077,7 @@ os_pread(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("pread", nargs, 3, 3)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6670,7 +7146,7 @@ os_preadv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("preadv", nargs, 3, 4)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6681,7 +7157,7 @@ os_preadv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 4) {
         goto skip_optional;
     }
-    flags = _PyLong_AsInt(args[3]);
+    flags = PyLong_AsInt(args[3]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6721,17 +7197,13 @@ os_write(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("write", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (PyObject_GetBuffer(args[1], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("write", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     _return_value = os_write_impl(module, fd, &data);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
@@ -6807,11 +7279,11 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!args) {
         goto exit;
     }
-    out_fd = _PyLong_AsInt(args[0]);
+    out_fd = PyLong_AsInt(args[0]);
     if (out_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    in_fd = _PyLong_AsInt(args[1]);
+    in_fd = PyLong_AsInt(args[1]);
     if (in_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6836,7 +7308,7 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
             goto skip_optional_pos;
         }
     }
-    flags = _PyLong_AsInt(args[6]);
+    flags = PyLong_AsInt(args[6]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6909,11 +7381,11 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!args) {
         goto exit;
     }
-    out_fd = _PyLong_AsInt(args[0]);
+    out_fd = PyLong_AsInt(args[0]);
     if (out_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    in_fd = _PyLong_AsInt(args[1]);
+    in_fd = PyLong_AsInt(args[1]);
     if (in_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -6947,7 +7419,7 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
             goto skip_optional_pos;
         }
     }
-    flags = _PyLong_AsInt(args[6]);
+    flags = PyLong_AsInt(args[6]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7014,11 +7486,11 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!args) {
         goto exit;
     }
-    out_fd = _PyLong_AsInt(args[0]);
+    out_fd = PyLong_AsInt(args[0]);
     if (out_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    in_fd = _PyLong_AsInt(args[1]);
+    in_fd = PyLong_AsInt(args[1]);
     if (in_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7068,15 +7540,15 @@ os__fcopyfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("_fcopyfile", nargs, 3, 3)) {
         goto exit;
     }
-    in_fd = _PyLong_AsInt(args[0]);
+    in_fd = PyLong_AsInt(args[0]);
     if (in_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    out_fd = _PyLong_AsInt(args[1]);
+    out_fd = PyLong_AsInt(args[1]);
     if (out_fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    flags = _PyLong_AsInt(args[2]);
+    flags = PyLong_AsInt(args[2]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7139,7 +7611,7 @@ os_fstat(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     if (!args) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7171,7 +7643,7 @@ os_isatty(PyObject *module, PyObject *arg)
     int fd;
     int _return_value;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7236,7 +7708,7 @@ os_pipe2(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int flags;
 
-    flags = _PyLong_AsInt(arg);
+    flags = PyLong_AsInt(arg);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7276,7 +7748,7 @@ os_writev(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("writev", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7302,7 +7774,7 @@ PyDoc_STRVAR(os_pwrite__doc__,
 "Write bytes to a file descriptor starting at a particular offset.\n"
 "\n"
 "Write buffer to fd, starting at offset bytes from the beginning of\n"
-"the file.  Returns the number of bytes writte.  Does not change the\n"
+"the file.  Returns the number of bytes written.  Does not change the\n"
 "current file offset.");
 
 #define OS_PWRITE_METHODDEF    \
@@ -7323,17 +7795,13 @@ os_pwrite(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("pwrite", nargs, 3, 3)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
     if (PyObject_GetBuffer(args[1], &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("pwrite", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (!Py_off_t_converter(args[2], &offset)) {
         goto exit;
     }
@@ -7397,7 +7865,7 @@ os_pwritev(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("pwritev", nargs, 3, 4)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7408,7 +7876,7 @@ os_pwritev(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 4) {
         goto skip_optional;
     }
-    flags = _PyLong_AsInt(args[3]);
+    flags = PyLong_AsInt(args[3]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7496,11 +7964,11 @@ os_copy_file_range(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     if (!args) {
         goto exit;
     }
-    src = _PyLong_AsInt(args[0]);
+    src = PyLong_AsInt(args[0]);
     if (src == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    dst = _PyLong_AsInt(args[1]);
+    dst = PyLong_AsInt(args[1]);
     if (dst == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7611,11 +8079,11 @@ os_splice(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     if (!args) {
         goto exit;
     }
-    src = _PyLong_AsInt(args[0]);
+    src = PyLong_AsInt(args[0]);
     if (src == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    dst = _PyLong_AsInt(args[1]);
+    dst = PyLong_AsInt(args[1]);
     if (dst == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -7723,7 +8191,7 @@ os_mkfifo(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         goto skip_optional_pos;
     }
     if (args[1]) {
-        mode = _PyLong_AsInt(args[1]);
+        mode = PyLong_AsInt(args[1]);
         if (mode == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -7824,7 +8292,7 @@ os_mknod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         goto skip_optional_pos;
     }
     if (args[1]) {
-        mode = _PyLong_AsInt(args[1]);
+        mode = PyLong_AsInt(args[1]);
         if (mode == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -7956,11 +8424,11 @@ os_makedev(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("makedev", nargs, 2, 2)) {
         goto exit;
     }
-    major = _PyLong_AsInt(args[0]);
+    major = PyLong_AsInt(args[0]);
     if (major == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    minor = _PyLong_AsInt(args[1]);
+    minor = PyLong_AsInt(args[1]);
     if (minor == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8000,7 +8468,7 @@ os_ftruncate(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("ftruncate", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8086,7 +8554,7 @@ os_truncate(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
 
 #endif /* (defined HAVE_TRUNCATE || defined MS_WINDOWS) */
 
-#if (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG))
+#if (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG) && !defined(__wasi__))
 
 PyDoc_STRVAR(os_posix_fallocate__doc__,
 "posix_fallocate($module, fd, offset, length, /)\n"
@@ -8115,7 +8583,7 @@ os_posix_fallocate(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("posix_fallocate", nargs, 3, 3)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8131,7 +8599,7 @@ os_posix_fallocate(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     return return_value;
 }
 
-#endif /* (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG)) */
+#endif /* (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG) && !defined(__wasi__)) */
 
 #if (defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG))
 
@@ -8168,7 +8636,7 @@ os_posix_fadvise(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("posix_fadvise", nargs, 4, 4)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8178,7 +8646,7 @@ os_posix_fadvise(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!Py_off_t_converter(args[2], &length)) {
         goto exit;
     }
-    advice = _PyLong_AsInt(args[3]);
+    advice = PyLong_AsInt(args[3]);
     if (advice == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8218,17 +8686,11 @@ os_putenv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("putenv", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     name = args[0];
     if (!PyUnicode_Check(args[1])) {
         _PyArg_BadArgument("putenv", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     value = args[1];
     return_value = os_putenv_impl(module, name, value);
 
@@ -8305,9 +8767,6 @@ os_unsetenv(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("unsetenv", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     name = arg;
     return_value = os_unsetenv_impl(module, name);
 
@@ -8369,7 +8828,7 @@ os_strerror(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int code;
 
-    code = _PyLong_AsInt(arg);
+    code = PyLong_AsInt(arg);
     if (code == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8400,7 +8859,7 @@ os_WCOREDUMP(PyObject *module, PyObject *arg)
     int status;
     int _return_value;
 
-    status = _PyLong_AsInt(arg);
+    status = PyLong_AsInt(arg);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8470,7 +8929,7 @@ os_WIFCONTINUED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8537,7 +8996,7 @@ os_WIFSTOPPED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8604,7 +9063,7 @@ os_WIFSIGNALED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8671,7 +9130,7 @@ os_WIFEXITED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8738,7 +9197,7 @@ os_WEXITSTATUS(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8805,7 +9264,7 @@ os_WTERMSIG(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8872,7 +9331,7 @@ os_WSTOPSIG(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!args) {
         goto exit;
     }
-    status = _PyLong_AsInt(args[0]);
+    status = PyLong_AsInt(args[0]);
     if (status == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -8910,7 +9369,7 @@ os_fstatvfs(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int fd;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -9303,7 +9762,7 @@ PyDoc_STRVAR(os_startfile__doc__,
 
 static PyObject *
 os_startfile_impl(PyObject *module, path_t *filepath,
-                  const Py_UNICODE *operation, const Py_UNICODE *arguments,
+                  const wchar_t *operation, const wchar_t *arguments,
                   path_t *cwd, int show_cmd);
 
 static PyObject *
@@ -9338,8 +9797,8 @@ os_startfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t filepath = PATH_T_INITIALIZE("startfile", "filepath", 0, 0);
-    const Py_UNICODE *operation = NULL;
-    const Py_UNICODE *arguments = NULL;
+    const wchar_t *operation = NULL;
+    const wchar_t *arguments = NULL;
     path_t cwd = PATH_T_INITIALIZE("startfile", "cwd", 1, 0);
     int show_cmd = 1;
 
@@ -9387,7 +9846,7 @@ os_startfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
             goto skip_optional_pos;
         }
     }
-    show_cmd = _PyLong_AsInt(args[4]);
+    show_cmd = PyLong_AsInt(args[4]);
     if (show_cmd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -9486,7 +9945,7 @@ os_device_encoding(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     if (!args) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -9781,15 +10240,11 @@ os_setxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (PyObject_GetBuffer(args[2], &value, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&value, 'C')) {
-        _PyArg_BadArgument("setxattr", "argument 'value'", "contiguous buffer", args[2]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
     if (args[3]) {
-        flags = _PyLong_AsInt(args[3]);
+        flags = PyLong_AsInt(args[3]);
         if (flags == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -10165,7 +10620,7 @@ os_eventfd(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -10342,7 +10797,7 @@ os_get_terminal_size(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 1) {
         goto skip_optional;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -10359,11 +10814,9 @@ PyDoc_STRVAR(os_cpu_count__doc__,
 "cpu_count($module, /)\n"
 "--\n"
 "\n"
-"Return the number of CPUs in the system; return None if indeterminable.\n"
+"Return the number of logical CPUs in the system.\n"
 "\n"
-"This number is not equivalent to the number of CPUs the current process can\n"
-"use.  The number of usable CPUs can be obtained with\n"
-"``len(os.sched_getaffinity(0))``");
+"Return None if indeterminable.");
 
 #define OS_CPU_COUNT_METHODDEF    \
     {"cpu_count", (PyCFunction)os_cpu_count, METH_NOARGS, os_cpu_count__doc__},
@@ -10396,7 +10849,7 @@ os_get_inheritable(PyObject *module, PyObject *arg)
     int fd;
     int _return_value;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -10432,11 +10885,11 @@ os_set_inheritable(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("set_inheritable", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    inheritable = _PyLong_AsInt(args[1]);
+    inheritable = PyLong_AsInt(args[1]);
     if (inheritable == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -10537,7 +10990,7 @@ os_get_blocking(PyObject *module, PyObject *arg)
     int fd;
     int _return_value;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -10576,7 +11029,7 @@ os_set_blocking(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("set_blocking", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -10629,22 +11082,18 @@ PyDoc_STRVAR(os_DirEntry_is_junction__doc__,
 "Return True if the entry is a junction; cached per entry.");
 
 #define OS_DIRENTRY_IS_JUNCTION_METHODDEF    \
-    {"is_junction", _PyCFunction_CAST(os_DirEntry_is_junction), METH_METHOD|METH_FASTCALL|METH_KEYWORDS, os_DirEntry_is_junction__doc__},
+    {"is_junction", (PyCFunction)os_DirEntry_is_junction, METH_NOARGS, os_DirEntry_is_junction__doc__},
 
 static int
-os_DirEntry_is_junction_impl(DirEntry *self, PyTypeObject *defining_class);
+os_DirEntry_is_junction_impl(DirEntry *self);
 
 static PyObject *
-os_DirEntry_is_junction(DirEntry *self, PyTypeObject *defining_class, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+os_DirEntry_is_junction(DirEntry *self, PyObject *Py_UNUSED(ignored))
 {
     PyObject *return_value = NULL;
     int _return_value;
 
-    if (nargs) {
-        PyErr_SetString(PyExc_TypeError, "is_junction() takes no arguments");
-        goto exit;
-    }
-    _return_value = os_DirEntry_is_junction_impl(self, defining_class);
+    _return_value = os_DirEntry_is_junction_impl(self);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
     }
@@ -11089,7 +11538,7 @@ os_getrandom(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -11307,6 +11756,28 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject *const *args, Py_ssize_t na
 
 #endif /* (defined(WIFEXITED) || defined(MS_WINDOWS)) */
 
+#if defined(MS_WINDOWS)
+
+PyDoc_STRVAR(os__supports_virtual_terminal__doc__,
+"_supports_virtual_terminal($module, /)\n"
+"--\n"
+"\n"
+"Checks if virtual terminal is supported in windows");
+
+#define OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF    \
+    {"_supports_virtual_terminal", (PyCFunction)os__supports_virtual_terminal, METH_NOARGS, os__supports_virtual_terminal__doc__},
+
+static PyObject *
+os__supports_virtual_terminal_impl(PyObject *module);
+
+static PyObject *
+os__supports_virtual_terminal(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return os__supports_virtual_terminal_impl(module);
+}
+
+#endif /* defined(MS_WINDOWS) */
+
 #ifndef OS_TTYNAME_METHODDEF
     #define OS_TTYNAME_METHODDEF
 #endif /* !defined(OS_TTYNAME_METHODDEF) */
@@ -11379,6 +11850,10 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject *const *args, Py_ssize_t na
     #define OS_LISTMOUNTS_METHODDEF
 #endif /* !defined(OS_LISTMOUNTS_METHODDEF) */
 
+#ifndef OS__PATH_ISDEVDRIVE_METHODDEF
+    #define OS__PATH_ISDEVDRIVE_METHODDEF
+#endif /* !defined(OS__PATH_ISDEVDRIVE_METHODDEF) */
+
 #ifndef OS__GETFULLPATHNAME_METHODDEF
     #define OS__GETFULLPATHNAME_METHODDEF
 #endif /* !defined(OS__GETFULLPATHNAME_METHODDEF) */
@@ -11387,6 +11862,10 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject *const *args, Py_ssize_t na
     #define OS__GETFINALPATHNAME_METHODDEF
 #endif /* !defined(OS__GETFINALPATHNAME_METHODDEF) */
 
+#ifndef OS__FINDFIRSTFILE_METHODDEF
+    #define OS__FINDFIRSTFILE_METHODDEF
+#endif /* !defined(OS__FINDFIRSTFILE_METHODDEF) */
+
 #ifndef OS__GETVOLUMEPATHNAME_METHODDEF
     #define OS__GETVOLUMEPATHNAME_METHODDEF
 #endif /* !defined(OS__GETVOLUMEPATHNAME_METHODDEF) */
@@ -11655,9 +12134,25 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject *const *args, Py_ssize_t na
     #define OS_SYMLINK_METHODDEF
 #endif /* !defined(OS_SYMLINK_METHODDEF) */
 
-#ifndef OS_TIMES_METHODDEF
-    #define OS_TIMES_METHODDEF
-#endif /* !defined(OS_TIMES_METHODDEF) */
+#ifndef OS_TIMERFD_CREATE_METHODDEF
+    #define OS_TIMERFD_CREATE_METHODDEF
+#endif /* !defined(OS_TIMERFD_CREATE_METHODDEF) */
+
+#ifndef OS_TIMERFD_SETTIME_METHODDEF
+    #define OS_TIMERFD_SETTIME_METHODDEF
+#endif /* !defined(OS_TIMERFD_SETTIME_METHODDEF) */
+
+#ifndef OS_TIMERFD_SETTIME_NS_METHODDEF
+    #define OS_TIMERFD_SETTIME_NS_METHODDEF
+#endif /* !defined(OS_TIMERFD_SETTIME_NS_METHODDEF) */
+
+#ifndef OS_TIMERFD_GETTIME_METHODDEF
+    #define OS_TIMERFD_GETTIME_METHODDEF
+#endif /* !defined(OS_TIMERFD_GETTIME_METHODDEF) */
+
+#ifndef OS_TIMERFD_GETTIME_NS_METHODDEF
+    #define OS_TIMERFD_GETTIME_NS_METHODDEF
+#endif /* !defined(OS_TIMERFD_GETTIME_NS_METHODDEF) */
 
 #ifndef OS_GETSID_METHODDEF
     #define OS_GETSID_METHODDEF
@@ -11922,4 +12417,8 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject *const *args, Py_ssize_t na
 #ifndef OS_WAITSTATUS_TO_EXITCODE_METHODDEF
     #define OS_WAITSTATUS_TO_EXITCODE_METHODDEF
 #endif /* !defined(OS_WAITSTATUS_TO_EXITCODE_METHODDEF) */
-/*[clinic end generated code: output=47750e0e29c8d707 input=a9049054013a1b77]*/
+
+#ifndef OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
+    #define OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
+#endif /* !defined(OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF) */
+/*[clinic end generated code: output=ff0ec3371de19904 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/pwdmodule.c.h b/Modules/clinic/pwdmodule.c.h
index f2603eaf322588..43d4825031c7e6 100644
--- a/Modules/clinic/pwdmodule.c.h
+++ b/Modules/clinic/pwdmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(pwd_getpwuid__doc__,
 "getpwuid($module, uidobj, /)\n"
@@ -43,9 +39,6 @@ pwd_getpwnam(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("getpwnam", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     name = arg;
     return_value = pwd_getpwnam_impl(module, name);
 
@@ -80,4 +73,4 @@ pwd_getpwall(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef PWD_GETPWALL_METHODDEF
     #define PWD_GETPWALL_METHODDEF
 #endif /* !defined(PWD_GETPWALL_METHODDEF) */
-/*[clinic end generated code: output=a95bc08653cda56b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5a8fb12939ff4ea3 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/pyexpat.c.h b/Modules/clinic/pyexpat.c.h
index 34937c5d594f5c..a5b93e68598204 100644
--- a/Modules/clinic/pyexpat.c.h
+++ b/Modules/clinic/pyexpat.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(pyexpat_xmlparser_Parse__doc__,
 "Parse($self, data, isfinal=False, /)\n"
@@ -288,7 +288,7 @@ pyexpat_xmlparser_SetParamEntityParsing(xmlparseobject *self, PyObject *arg)
     PyObject *return_value = NULL;
     int flag;
 
-    flag = _PyLong_AsInt(arg);
+    flag = PyLong_AsInt(arg);
     if (flag == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -498,4 +498,4 @@ pyexpat_ErrorString(PyObject *module, PyObject *arg)
 #ifndef PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
     #define PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
 #endif /* !defined(PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF) */
-/*[clinic end generated code: output=63efc62e24a7b5a7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=48c4296e43777df4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/readline.c.h b/Modules/clinic/readline.c.h
index e36d651f67f6eb..1c616d60f097cc 100644
--- a/Modules/clinic/readline.c.h
+++ b/Modules/clinic/readline.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(readline_parse_and_bind__doc__,
 "parse_and_bind($module, string, /)\n"
@@ -146,7 +142,7 @@ readline_append_history_file(PyObject *module, PyObject *const *args, Py_ssize_t
     if (!_PyArg_CheckPositional("append_history_file", nargs, 1, 2)) {
         goto exit;
     }
-    nelements = _PyLong_AsInt(args[0]);
+    nelements = PyLong_AsInt(args[0]);
     if (nelements == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -183,7 +179,7 @@ readline_set_history_length(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int length;
 
-    length = _PyLong_AsInt(arg);
+    length = PyLong_AsInt(arg);
     if (length == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -404,7 +400,7 @@ readline_remove_history_item(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int entry_number;
 
-    entry_number = _PyLong_AsInt(arg);
+    entry_number = PyLong_AsInt(arg);
     if (entry_number == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -439,7 +435,7 @@ readline_replace_history_item(PyObject *module, PyObject *const *args, Py_ssize_
     if (!_PyArg_CheckPositional("replace_history_item", nargs, 2, 2)) {
         goto exit;
     }
-    entry_number = _PyLong_AsInt(args[0]);
+    entry_number = PyLong_AsInt(args[0]);
     if (entry_number == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -447,9 +443,6 @@ readline_replace_history_item(PyObject *module, PyObject *const *args, Py_ssize_
         _PyArg_BadArgument("replace_history_item", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     line = args[1];
     return_value = readline_replace_history_item_impl(module, entry_number, line);
 
@@ -585,7 +578,7 @@ readline_get_history_item(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int idx;
 
-    idx = _PyLong_AsInt(arg);
+    idx = PyLong_AsInt(arg);
     if (idx == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -691,4 +684,4 @@ readline_redisplay(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef READLINE_CLEAR_HISTORY_METHODDEF
     #define READLINE_CLEAR_HISTORY_METHODDEF
 #endif /* !defined(READLINE_CLEAR_HISTORY_METHODDEF) */
-/*[clinic end generated code: output=9097fcb749c19e27 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=358ab465285c7949 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/resource.c.h b/Modules/clinic/resource.c.h
index d0ca8e7150fa86..9eda7de27532a1 100644
--- a/Modules/clinic/resource.c.h
+++ b/Modules/clinic/resource.c.h
@@ -2,12 +2,6 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
 #if defined(HAVE_GETRUSAGE)
 
 PyDoc_STRVAR(resource_getrusage__doc__,
@@ -27,7 +21,7 @@ resource_getrusage(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int who;
 
-    who = _PyLong_AsInt(arg);
+    who = PyLong_AsInt(arg);
     if (who == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -56,7 +50,7 @@ resource_getrlimit(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int resource;
 
-    resource = _PyLong_AsInt(arg);
+    resource = PyLong_AsInt(arg);
     if (resource == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -72,7 +66,7 @@ PyDoc_STRVAR(resource_setrlimit__doc__,
 "\n");
 
 #define RESOURCE_SETRLIMIT_METHODDEF    \
-    {"setrlimit", _PyCFunction_CAST(resource_setrlimit), METH_FASTCALL, resource_setrlimit__doc__},
+    {"setrlimit", (PyCFunction)(void(*)(void))resource_setrlimit, METH_FASTCALL, resource_setrlimit__doc__},
 
 static PyObject *
 resource_setrlimit_impl(PyObject *module, int resource, PyObject *limits);
@@ -84,10 +78,11 @@ resource_setrlimit(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     int resource;
     PyObject *limits;
 
-    if (!_PyArg_CheckPositional("setrlimit", nargs, 2, 2)) {
+    if (nargs != 2) {
+        PyErr_Format(PyExc_TypeError, "setrlimit expected 2 arguments, got %zd", nargs);
         goto exit;
     }
-    resource = _PyLong_AsInt(args[0]);
+    resource = PyLong_AsInt(args[0]);
     if (resource == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -106,7 +101,7 @@ PyDoc_STRVAR(resource_prlimit__doc__,
 "\n");
 
 #define RESOURCE_PRLIMIT_METHODDEF    \
-    {"prlimit", _PyCFunction_CAST(resource_prlimit), METH_FASTCALL, resource_prlimit__doc__},
+    {"prlimit", (PyCFunction)(void(*)(void))resource_prlimit, METH_FASTCALL, resource_prlimit__doc__},
 
 static PyObject *
 resource_prlimit_impl(PyObject *module, pid_t pid, int resource,
@@ -120,14 +115,19 @@ resource_prlimit(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     int resource;
     PyObject *limits = Py_None;
 
-    if (!_PyArg_CheckPositional("prlimit", nargs, 2, 3)) {
+    if (nargs < 2) {
+        PyErr_Format(PyExc_TypeError, "prlimit expected at least 2 arguments, got %zd", nargs);
+        goto exit;
+    }
+    if (nargs > 3) {
+        PyErr_Format(PyExc_TypeError, "prlimit expected at most 3 arguments, got %zd", nargs);
         goto exit;
     }
     pid = PyLong_AsPid(args[0]);
     if (pid == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    resource = _PyLong_AsInt(args[1]);
+    resource = PyLong_AsInt(args[1]);
     if (resource == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -178,4 +178,4 @@ resource_getpagesize(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef RESOURCE_PRLIMIT_METHODDEF
     #define RESOURCE_PRLIMIT_METHODDEF
 #endif /* !defined(RESOURCE_PRLIMIT_METHODDEF) */
-/*[clinic end generated code: output=2fbec74335a57230 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e45883ace510414a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/selectmodule.c.h b/Modules/clinic/selectmodule.c.h
index f44ca1d70a1e86..67e76d4c89f59a 100644
--- a/Modules/clinic/selectmodule.c.h
+++ b/Modules/clinic/selectmodule.c.h
@@ -3,10 +3,12 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_fileutils.h"     // _PyLong_FileDescriptor_Converter()
+#include "pycore_long.h"          // _PyLong_UnsignedShort_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(select_select__doc__,
 "select($module, rlist, wlist, xlist, timeout=None, /)\n"
@@ -568,7 +570,7 @@ select_epoll(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         goto skip_optional_pos;
     }
     if (fastargs[0]) {
-        sizehint = _PyLong_AsInt(fastargs[0]);
+        sizehint = PyLong_AsInt(fastargs[0]);
         if (sizehint == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -576,7 +578,7 @@ select_epoll(PyTypeObject *type, PyObject *args, PyObject *kwargs)
             goto skip_optional_pos;
         }
     }
-    flags = _PyLong_AsInt(fastargs[1]);
+    flags = PyLong_AsInt(fastargs[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -655,7 +657,7 @@ select_epoll_fromfd(PyTypeObject *type, PyObject *arg)
     PyObject *return_value = NULL;
     int fd;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -954,7 +956,7 @@ select_epoll_poll(pyEpoll_Object *self, PyObject *const *args, Py_ssize_t nargs,
             goto skip_optional_pos;
         }
     }
-    maxevents = _PyLong_AsInt(args[1]);
+    maxevents = PyLong_AsInt(args[1]);
     if (maxevents == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1145,7 +1147,7 @@ select_kqueue_fromfd(PyTypeObject *type, PyObject *arg)
     PyObject *return_value = NULL;
     int fd;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1193,7 +1195,7 @@ select_kqueue_control(kqueue_queue_Object *self, PyObject *const *args, Py_ssize
         goto exit;
     }
     changelist = args[0];
-    maxevents = _PyLong_AsInt(args[1]);
+    maxevents = PyLong_AsInt(args[1]);
     if (maxevents == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1309,4 +1311,4 @@ select_kqueue_control(kqueue_queue_Object *self, PyObject *const *args, Py_ssize
 #ifndef SELECT_KQUEUE_CONTROL_METHODDEF
     #define SELECT_KQUEUE_CONTROL_METHODDEF
 #endif /* !defined(SELECT_KQUEUE_CONTROL_METHODDEF) */
-/*[clinic end generated code: output=64516114287e894d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4c2dcb31cb17c2c6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha1module.c.h b/Modules/clinic/sha1module.c.h
index ad15ddaadfc86c..ee391656fb67c3 100644
--- a/Modules/clinic/sha1module.c.h
+++ b/Modules/clinic/sha1module.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(SHA1Type_copy__doc__,
 "copy($self, /)\n"
@@ -148,4 +148,4 @@ _sha1_sha1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4d1293ca3472acdb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=41fc7579213b57b4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha2module.c.h b/Modules/clinic/sha2module.c.h
index 8f855ca345e47a..ec31d5545be4c1 100644
--- a/Modules/clinic/sha2module.c.h
+++ b/Modules/clinic/sha2module.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(SHA256Type_copy__doc__,
 "copy($self, /)\n"
@@ -437,4 +437,4 @@ _sha2_sha384(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f81dacb48f3fee72 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1482d9de086e45c4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha3module.c.h b/Modules/clinic/sha3module.c.h
index 299803a3420bf6..738e9589503900 100644
--- a/Modules/clinic/sha3module.c.h
+++ b/Modules/clinic/sha3module.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_long.h"          // _PyLong_UnsignedLong_Converter()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(py_sha3_new__doc__,
 "sha3_224(data=b\'\', /, *, usedforsecurity=True)\n"
@@ -193,4 +194,4 @@ _sha3_shake_128_hexdigest(SHA3object *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=907cb475f3dc9ee0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a8e76a880d1421ec input=a9049054013a1b77]*/
diff --git a/Modules/clinic/signalmodule.c.h b/Modules/clinic/signalmodule.c.h
index 3b3c6ba150a1ad..bc33e066654364 100644
--- a/Modules/clinic/signalmodule.c.h
+++ b/Modules/clinic/signalmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(signal_default_int_handler__doc__,
 "default_int_handler($module, signalnum, frame, /)\n"
@@ -33,7 +29,7 @@ signal_default_int_handler(PyObject *module, PyObject *const *args, Py_ssize_t n
     if (!_PyArg_CheckPositional("default_int_handler", nargs, 2, 2)) {
         goto exit;
     }
-    signalnum = _PyLong_AsInt(args[0]);
+    signalnum = PyLong_AsInt(args[0]);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -65,7 +61,7 @@ signal_alarm(PyObject *module, PyObject *arg)
     int seconds;
     long _return_value;
 
-    seconds = _PyLong_AsInt(arg);
+    seconds = PyLong_AsInt(arg);
     if (seconds == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -121,7 +117,7 @@ signal_raise_signal(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int signalnum;
 
-    signalnum = _PyLong_AsInt(arg);
+    signalnum = PyLong_AsInt(arg);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -160,7 +156,7 @@ signal_signal(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("signal", nargs, 2, 2)) {
         goto exit;
     }
-    signalnum = _PyLong_AsInt(args[0]);
+    signalnum = PyLong_AsInt(args[0]);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -195,7 +191,7 @@ signal_getsignal(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int signalnum;
 
-    signalnum = _PyLong_AsInt(arg);
+    signalnum = PyLong_AsInt(arg);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -227,7 +223,7 @@ signal_strsignal(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int signalnum;
 
-    signalnum = _PyLong_AsInt(arg);
+    signalnum = PyLong_AsInt(arg);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -264,11 +260,11 @@ signal_siginterrupt(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("siginterrupt", nargs, 2, 2)) {
         goto exit;
     }
-    signalnum = _PyLong_AsInt(args[0]);
+    signalnum = PyLong_AsInt(args[0]);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    flag = _PyLong_AsInt(args[1]);
+    flag = PyLong_AsInt(args[1]);
     if (flag == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -311,7 +307,7 @@ signal_setitimer(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("setitimer", nargs, 2, 3)) {
         goto exit;
     }
-    which = _PyLong_AsInt(args[0]);
+    which = PyLong_AsInt(args[0]);
     if (which == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -349,7 +345,7 @@ signal_getitimer(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int which;
 
-    which = _PyLong_AsInt(arg);
+    which = PyLong_AsInt(arg);
     if (which == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -385,7 +381,7 @@ signal_pthread_sigmask(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     if (!_PyArg_CheckPositional("pthread_sigmask", nargs, 2, 2)) {
         goto exit;
     }
-    how = _PyLong_AsInt(args[0]);
+    how = PyLong_AsInt(args[0]);
     if (how == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -587,7 +583,7 @@ signal_pthread_kill(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
     thread_id = PyLong_AsUnsignedLongMask(args[0]);
-    signalnum = _PyLong_AsInt(args[1]);
+    signalnum = PyLong_AsInt(args[1]);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -626,11 +622,11 @@ signal_pidfd_send_signal(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (!_PyArg_CheckPositional("pidfd_send_signal", nargs, 2, 4)) {
         goto exit;
     }
-    pidfd = _PyLong_AsInt(args[0]);
+    pidfd = PyLong_AsInt(args[0]);
     if (pidfd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    signalnum = _PyLong_AsInt(args[1]);
+    signalnum = PyLong_AsInt(args[1]);
     if (signalnum == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -641,7 +637,7 @@ signal_pidfd_send_signal(PyObject *module, PyObject *const *args, Py_ssize_t nar
     if (nargs < 4) {
         goto skip_optional;
     }
-    flags = _PyLong_AsInt(args[3]);
+    flags = PyLong_AsInt(args[3]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -705,4 +701,4 @@ signal_pidfd_send_signal(PyObject *module, PyObject *const *args, Py_ssize_t nar
 #ifndef SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
     #define SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
 #endif /* !defined(SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF) */
-/*[clinic end generated code: output=2b54dc607f6e3146 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5a9928cb2dc75b5f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/socketmodule.c.h b/Modules/clinic/socketmodule.c.h
index 8ff1044d013b0f..3f4056efff2fec 100644
--- a/Modules/clinic/socketmodule.c.h
+++ b/Modules/clinic/socketmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static int
 sock_initobj_impl(PySocketSockObject *self, int family, int type, int proto,
@@ -58,7 +58,7 @@ sock_initobj(PyObject *self, PyObject *args, PyObject *kwargs)
         goto skip_optional_pos;
     }
     if (fastargs[0]) {
-        family = _PyLong_AsInt(fastargs[0]);
+        family = PyLong_AsInt(fastargs[0]);
         if (family == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -67,7 +67,7 @@ sock_initobj(PyObject *self, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[1]) {
-        type = _PyLong_AsInt(fastargs[1]);
+        type = PyLong_AsInt(fastargs[1]);
         if (type == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -76,7 +76,7 @@ sock_initobj(PyObject *self, PyObject *args, PyObject *kwargs)
         }
     }
     if (fastargs[2]) {
-        proto = _PyLong_AsInt(fastargs[2]);
+        proto = PyLong_AsInt(fastargs[2]);
         if (proto == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -91,4 +91,172 @@ sock_initobj(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=987155ac4b48a198 input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_socket_socket_ntohs__doc__,
+"ntohs($self, x, /)\n"
+"--\n"
+"\n"
+"Convert a 16-bit unsigned integer from network to host byte order.");
+
+#define _SOCKET_SOCKET_NTOHS_METHODDEF    \
+    {"ntohs", (PyCFunction)_socket_socket_ntohs, METH_O, _socket_socket_ntohs__doc__},
+
+static PyObject *
+_socket_socket_ntohs_impl(PySocketSockObject *self, int x);
+
+static PyObject *
+_socket_socket_ntohs(PySocketSockObject *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    int x;
+
+    x = PyLong_AsInt(arg);
+    if (x == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _socket_socket_ntohs_impl(self, x);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_socket_socket_htons__doc__,
+"htons($self, x, /)\n"
+"--\n"
+"\n"
+"Convert a 16-bit unsigned integer from host to network byte order.");
+
+#define _SOCKET_SOCKET_HTONS_METHODDEF    \
+    {"htons", (PyCFunction)_socket_socket_htons, METH_O, _socket_socket_htons__doc__},
+
+static PyObject *
+_socket_socket_htons_impl(PySocketSockObject *self, int x);
+
+static PyObject *
+_socket_socket_htons(PySocketSockObject *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    int x;
+
+    x = PyLong_AsInt(arg);
+    if (x == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _socket_socket_htons_impl(self, x);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_socket_socket_inet_aton__doc__,
+"inet_aton($self, ip_addr, /)\n"
+"--\n"
+"\n"
+"Convert an IP address in string format (123.45.67.89) to the 32-bit packed binary format used in low-level network functions.");
+
+#define _SOCKET_SOCKET_INET_ATON_METHODDEF    \
+    {"inet_aton", (PyCFunction)_socket_socket_inet_aton, METH_O, _socket_socket_inet_aton__doc__},
+
+static PyObject *
+_socket_socket_inet_aton_impl(PySocketSockObject *self, const char *ip_addr);
+
+static PyObject *
+_socket_socket_inet_aton(PySocketSockObject *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    const char *ip_addr;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("inet_aton", "argument", "str", arg);
+        goto exit;
+    }
+    Py_ssize_t ip_addr_length;
+    ip_addr = PyUnicode_AsUTF8AndSize(arg, &ip_addr_length);
+    if (ip_addr == NULL) {
+        goto exit;
+    }
+    if (strlen(ip_addr) != (size_t)ip_addr_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
+    return_value = _socket_socket_inet_aton_impl(self, ip_addr);
+
+exit:
+    return return_value;
+}
+
+#if defined(HAVE_INET_NTOA)
+
+PyDoc_STRVAR(_socket_socket_inet_ntoa__doc__,
+"inet_ntoa($self, packed_ip, /)\n"
+"--\n"
+"\n"
+"Convert an IP address from 32-bit packed binary format to string format.");
+
+#define _SOCKET_SOCKET_INET_NTOA_METHODDEF    \
+    {"inet_ntoa", (PyCFunction)_socket_socket_inet_ntoa, METH_O, _socket_socket_inet_ntoa__doc__},
+
+static PyObject *
+_socket_socket_inet_ntoa_impl(PySocketSockObject *self, Py_buffer *packed_ip);
+
+static PyObject *
+_socket_socket_inet_ntoa(PySocketSockObject *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    Py_buffer packed_ip = {NULL, NULL};
+
+    if (PyObject_GetBuffer(arg, &packed_ip, PyBUF_SIMPLE) != 0) {
+        goto exit;
+    }
+    return_value = _socket_socket_inet_ntoa_impl(self, &packed_ip);
+
+exit:
+    /* Cleanup for packed_ip */
+    if (packed_ip.obj) {
+       PyBuffer_Release(&packed_ip);
+    }
+
+    return return_value;
+}
+
+#endif /* defined(HAVE_INET_NTOA) */
+
+#if (defined(HAVE_IF_NAMEINDEX) || defined(MS_WINDOWS))
+
+PyDoc_STRVAR(_socket_socket_if_nametoindex__doc__,
+"if_nametoindex($self, oname, /)\n"
+"--\n"
+"\n"
+"Returns the interface index corresponding to the interface name if_name.");
+
+#define _SOCKET_SOCKET_IF_NAMETOINDEX_METHODDEF    \
+    {"if_nametoindex", (PyCFunction)_socket_socket_if_nametoindex, METH_O, _socket_socket_if_nametoindex__doc__},
+
+static PyObject *
+_socket_socket_if_nametoindex_impl(PySocketSockObject *self, PyObject *oname);
+
+static PyObject *
+_socket_socket_if_nametoindex(PySocketSockObject *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *oname;
+
+    if (!PyUnicode_FSConverter(arg, &oname)) {
+        goto exit;
+    }
+    return_value = _socket_socket_if_nametoindex_impl(self, oname);
+
+exit:
+    return return_value;
+}
+
+#endif /* (defined(HAVE_IF_NAMEINDEX) || defined(MS_WINDOWS)) */
+
+#ifndef _SOCKET_SOCKET_INET_NTOA_METHODDEF
+    #define _SOCKET_SOCKET_INET_NTOA_METHODDEF
+#endif /* !defined(_SOCKET_SOCKET_INET_NTOA_METHODDEF) */
+
+#ifndef _SOCKET_SOCKET_IF_NAMETOINDEX_METHODDEF
+    #define _SOCKET_SOCKET_IF_NAMETOINDEX_METHODDEF
+#endif /* !defined(_SOCKET_SOCKET_IF_NAMETOINDEX_METHODDEF) */
+/*[clinic end generated code: output=eb37b5d88a1e4661 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/spwdmodule.c.h b/Modules/clinic/spwdmodule.c.h
deleted file mode 100644
index f47aa9a77f3f86..00000000000000
--- a/Modules/clinic/spwdmodule.c.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/*[clinic input]
-preserve
-[clinic start generated code]*/
-
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
-#if defined(HAVE_GETSPNAM)
-
-PyDoc_STRVAR(spwd_getspnam__doc__,
-"getspnam($module, arg, /)\n"
-"--\n"
-"\n"
-"Return the shadow password database entry for the given user name.\n"
-"\n"
-"See `help(spwd)` for more on shadow password database entries.");
-
-#define SPWD_GETSPNAM_METHODDEF    \
-    {"getspnam", (PyCFunction)spwd_getspnam, METH_O, spwd_getspnam__doc__},
-
-static PyObject *
-spwd_getspnam_impl(PyObject *module, PyObject *arg);
-
-static PyObject *
-spwd_getspnam(PyObject *module, PyObject *arg_)
-{
-    PyObject *return_value = NULL;
-    PyObject *arg;
-
-    if (!PyUnicode_Check(arg_)) {
-        _PyArg_BadArgument("getspnam", "argument", "str", arg_);
-        goto exit;
-    }
-    if (PyUnicode_READY(arg_) == -1) {
-        goto exit;
-    }
-    arg = arg_;
-    return_value = spwd_getspnam_impl(module, arg);
-
-exit:
-    return return_value;
-}
-
-#endif /* defined(HAVE_GETSPNAM) */
-
-#if defined(HAVE_GETSPENT)
-
-PyDoc_STRVAR(spwd_getspall__doc__,
-"getspall($module, /)\n"
-"--\n"
-"\n"
-"Return a list of all available shadow password database entries, in arbitrary order.\n"
-"\n"
-"See `help(spwd)` for more on shadow password database entries.");
-
-#define SPWD_GETSPALL_METHODDEF    \
-    {"getspall", (PyCFunction)spwd_getspall, METH_NOARGS, spwd_getspall__doc__},
-
-static PyObject *
-spwd_getspall_impl(PyObject *module);
-
-static PyObject *
-spwd_getspall(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    return spwd_getspall_impl(module);
-}
-
-#endif /* defined(HAVE_GETSPENT) */
-
-#ifndef SPWD_GETSPNAM_METHODDEF
-    #define SPWD_GETSPNAM_METHODDEF
-#endif /* !defined(SPWD_GETSPNAM_METHODDEF) */
-
-#ifndef SPWD_GETSPALL_METHODDEF
-    #define SPWD_GETSPALL_METHODDEF
-#endif /* !defined(SPWD_GETSPALL_METHODDEF) */
-/*[clinic end generated code: output=dd61827a7b708e11 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/symtablemodule.c.h b/Modules/clinic/symtablemodule.c.h
index 04fdb9f2d9b776..2ecd3afc00d2be 100644
--- a/Modules/clinic/symtablemodule.c.h
+++ b/Modules/clinic/symtablemodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_symtable_symtable__doc__,
 "symtable($module, source, filename, startstr, /)\n"
@@ -54,4 +50,4 @@ _symtable_symtable(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=07716ddbd6c7efe1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=931964a76a72f850 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/syslogmodule.c.h b/Modules/clinic/syslogmodule.c.h
index 0ce66ad4e1a490..58b0ea57b065b3 100644
--- a/Modules/clinic/syslogmodule.c.h
+++ b/Modules/clinic/syslogmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(syslog_openlog__doc__,
 "openlog($module, /, ident=<unrepresentable>, logoption=0,\n"
@@ -69,9 +69,6 @@ syslog_openlog(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
             _PyArg_BadArgument("openlog", "argument 'ident'", "str", args[0]);
             goto exit;
         }
-        if (PyUnicode_READY(args[0]) == -1) {
-            goto exit;
-        }
         ident = args[0];
         if (!--noptargs) {
             goto skip_optional_pos;
@@ -254,4 +251,4 @@ syslog_LOG_UPTO(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=3b1bdb16565b8fda input=a9049054013a1b77]*/
+/*[clinic end generated code: output=86ca2fd84b2da98e input=a9049054013a1b77]*/
diff --git a/Modules/clinic/termios.c.h b/Modules/clinic/termios.c.h
index 78863e53c42ffb..1c340681e5862f 100644
--- a/Modules/clinic/termios.c.h
+++ b/Modules/clinic/termios.c.h
@@ -2,11 +2,8 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_fileutils.h"     // _PyLong_FileDescriptor_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(termios_tcgetattr__doc__,
 "tcgetattr($module, fd, /)\n"
@@ -75,7 +72,7 @@ termios_tcsetattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    when = _PyLong_AsInt(args[1]);
+    when = PyLong_AsInt(args[1]);
     if (when == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -114,7 +111,7 @@ termios_tcsendbreak(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    duration = _PyLong_AsInt(args[1]);
+    duration = PyLong_AsInt(args[1]);
     if (duration == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -180,7 +177,7 @@ termios_tcflush(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    queue = _PyLong_AsInt(args[1]);
+    queue = PyLong_AsInt(args[1]);
     if (queue == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -219,7 +216,7 @@ termios_tcflow(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_FileDescriptor_Converter(args[0], &fd)) {
         goto exit;
     }
-    action = _PyLong_AsInt(args[1]);
+    action = PyLong_AsInt(args[1]);
     if (action == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -292,4 +289,4 @@ termios_tcsetwinsize(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=d286a3906a051869 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f31382658135c774 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/timemodule.c.h b/Modules/clinic/timemodule.c.h
new file mode 100644
index 00000000000000..bbc0748f9a9c0d
--- /dev/null
+++ b/Modules/clinic/timemodule.c.h
@@ -0,0 +1,74 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#if defined(HAVE_CLOCK_GETTIME)
+
+PyDoc_STRVAR(time_clock_gettime__doc__,
+"clock_gettime($module, clk_id, /)\n"
+"--\n"
+"\n"
+"Return the time of the specified clock clk_id as a float.");
+
+#define TIME_CLOCK_GETTIME_METHODDEF    \
+    {"clock_gettime", (PyCFunction)time_clock_gettime, METH_O, time_clock_gettime__doc__},
+
+static PyObject *
+time_clock_gettime_impl(PyObject *module, clockid_t clk_id);
+
+static PyObject *
+time_clock_gettime(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    clockid_t clk_id;
+
+    if (!time_clockid_converter(arg, &clk_id)) {
+        goto exit;
+    }
+    return_value = time_clock_gettime_impl(module, clk_id);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_CLOCK_GETTIME) */
+
+#if defined(HAVE_CLOCK_GETTIME)
+
+PyDoc_STRVAR(time_clock_gettime_ns__doc__,
+"clock_gettime_ns($module, clk_id, /)\n"
+"--\n"
+"\n"
+"Return the time of the specified clock clk_id as nanoseconds (int).");
+
+#define TIME_CLOCK_GETTIME_NS_METHODDEF    \
+    {"clock_gettime_ns", (PyCFunction)time_clock_gettime_ns, METH_O, time_clock_gettime_ns__doc__},
+
+static PyObject *
+time_clock_gettime_ns_impl(PyObject *module, clockid_t clk_id);
+
+static PyObject *
+time_clock_gettime_ns(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    clockid_t clk_id;
+
+    if (!time_clockid_converter(arg, &clk_id)) {
+        goto exit;
+    }
+    return_value = time_clock_gettime_ns_impl(module, clk_id);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_CLOCK_GETTIME) */
+
+#ifndef TIME_CLOCK_GETTIME_METHODDEF
+    #define TIME_CLOCK_GETTIME_METHODDEF
+#endif /* !defined(TIME_CLOCK_GETTIME_METHODDEF) */
+
+#ifndef TIME_CLOCK_GETTIME_NS_METHODDEF
+    #define TIME_CLOCK_GETTIME_NS_METHODDEF
+#endif /* !defined(TIME_CLOCK_GETTIME_NS_METHODDEF) */
+/*[clinic end generated code: output=b589a2132aa9df47 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/unicodedata.c.h b/Modules/clinic/unicodedata.c.h
index 6102027d07abda..739f498f1d2672 100644
--- a/Modules/clinic/unicodedata.c.h
+++ b/Modules/clinic/unicodedata.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(unicodedata_UCD_decimal__doc__,
 "decimal($self, chr, default=<unrepresentable>, /)\n"
@@ -39,9 +35,6 @@ unicodedata_UCD_decimal(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("decimal", "argument 1", "a unicode character", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0])) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(args[0]) != 1) {
         _PyArg_BadArgument("decimal", "argument 1", "a unicode character", args[0]);
         goto exit;
@@ -88,9 +81,6 @@ unicodedata_UCD_digit(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("digit", "argument 1", "a unicode character", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0])) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(args[0]) != 1) {
         _PyArg_BadArgument("digit", "argument 1", "a unicode character", args[0]);
         goto exit;
@@ -138,9 +128,6 @@ unicodedata_UCD_numeric(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("numeric", "argument 1", "a unicode character", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0])) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(args[0]) != 1) {
         _PyArg_BadArgument("numeric", "argument 1", "a unicode character", args[0]);
         goto exit;
@@ -179,9 +166,6 @@ unicodedata_UCD_category(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("category", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("category", "argument", "a unicode character", arg);
         goto exit;
@@ -217,9 +201,6 @@ unicodedata_UCD_bidirectional(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("bidirectional", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("bidirectional", "argument", "a unicode character", arg);
         goto exit;
@@ -256,9 +237,6 @@ unicodedata_UCD_combining(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("combining", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("combining", "argument", "a unicode character", arg);
         goto exit;
@@ -300,9 +278,6 @@ unicodedata_UCD_mirrored(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("mirrored", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("mirrored", "argument", "a unicode character", arg);
         goto exit;
@@ -340,9 +315,6 @@ unicodedata_UCD_east_asian_width(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("east_asian_width", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("east_asian_width", "argument", "a unicode character", arg);
         goto exit;
@@ -378,9 +350,6 @@ unicodedata_UCD_decomposition(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("decomposition", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("decomposition", "argument", "a unicode character", arg);
         goto exit;
@@ -421,17 +390,11 @@ unicodedata_UCD_is_normalized(PyObject *self, PyObject *const *args, Py_ssize_t
         _PyArg_BadArgument("is_normalized", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     form = args[0];
     if (!PyUnicode_Check(args[1])) {
         _PyArg_BadArgument("is_normalized", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     input = args[1];
     return_value = unicodedata_UCD_is_normalized_impl(self, form, input);
 
@@ -468,17 +431,11 @@ unicodedata_UCD_normalize(PyObject *self, PyObject *const *args, Py_ssize_t narg
         _PyArg_BadArgument("normalize", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     form = args[0];
     if (!PyUnicode_Check(args[1])) {
         _PyArg_BadArgument("normalize", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     input = args[1];
     return_value = unicodedata_UCD_normalize_impl(self, form, input);
 
@@ -515,9 +472,6 @@ unicodedata_UCD_name(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("name", "argument 1", "a unicode character", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0])) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(args[0]) != 1) {
         _PyArg_BadArgument("name", "argument 1", "a unicode character", args[0]);
         goto exit;
@@ -565,4 +519,4 @@ unicodedata_UCD_lookup(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=aaf601d28b352353 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ea30f89007b2bfff input=a9049054013a1b77]*/
diff --git a/Modules/clinic/zlibmodule.c.h b/Modules/clinic/zlibmodule.c.h
index 65412b2435ade1..6b09abe309bf48 100644
--- a/Modules/clinic/zlibmodule.c.h
+++ b/Modules/clinic/zlibmodule.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(zlib_compress__doc__,
 "compress($module, data, /, level=Z_DEFAULT_COMPRESSION, wbits=MAX_WBITS)\n"
@@ -69,15 +70,11 @@ zlib_compress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
     if (args[1]) {
-        level = _PyLong_AsInt(args[1]);
+        level = PyLong_AsInt(args[1]);
         if (level == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -85,7 +82,7 @@ zlib_compress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
             goto skip_optional_pos;
         }
     }
-    wbits = _PyLong_AsInt(args[2]);
+    wbits = PyLong_AsInt(args[2]);
     if (wbits == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -163,15 +160,11 @@ zlib_decompress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
     if (args[1]) {
-        wbits = _PyLong_AsInt(args[1]);
+        wbits = PyLong_AsInt(args[1]);
         if (wbits == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -286,7 +279,7 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         goto skip_optional_pos;
     }
     if (args[0]) {
-        level = _PyLong_AsInt(args[0]);
+        level = PyLong_AsInt(args[0]);
         if (level == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -295,7 +288,7 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         }
     }
     if (args[1]) {
-        method = _PyLong_AsInt(args[1]);
+        method = PyLong_AsInt(args[1]);
         if (method == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -304,7 +297,7 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         }
     }
     if (args[2]) {
-        wbits = _PyLong_AsInt(args[2]);
+        wbits = PyLong_AsInt(args[2]);
         if (wbits == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -313,7 +306,7 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         }
     }
     if (args[3]) {
-        memLevel = _PyLong_AsInt(args[3]);
+        memLevel = PyLong_AsInt(args[3]);
         if (memLevel == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -322,7 +315,7 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         }
     }
     if (args[4]) {
-        strategy = _PyLong_AsInt(args[4]);
+        strategy = PyLong_AsInt(args[4]);
         if (strategy == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -333,10 +326,6 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[5], &zdict, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&zdict, 'C')) {
-        _PyArg_BadArgument("compressobj", "argument 'zdict'", "contiguous buffer", args[5]);
-        goto exit;
-    }
 skip_optional_pos:
     return_value = zlib_compressobj_impl(module, level, method, wbits, memLevel, strategy, &zdict);
 
@@ -409,7 +398,7 @@ zlib_decompressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         goto skip_optional_pos;
     }
     if (args[0]) {
-        wbits = _PyLong_AsInt(args[0]);
+        wbits = PyLong_AsInt(args[0]);
         if (wbits == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -472,10 +461,6 @@ zlib_Compress_compress(compobject *self, PyTypeObject *cls, PyObject *const *arg
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("compress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = zlib_Compress_compress_impl(self, cls, &data);
 
 exit:
@@ -552,10 +537,6 @@ zlib_Decompress_decompress(compobject *self, PyTypeObject *cls, PyObject *const
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -628,7 +609,7 @@ zlib_Compress_flush(compobject *self, PyTypeObject *cls, PyObject *const *args,
     if (nargs < 1) {
         goto skip_optional_posonly;
     }
-    mode = _PyLong_AsInt(args[0]);
+    mode = PyLong_AsInt(args[0]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -964,10 +945,6 @@ zlib_ZlibDecompressor_decompress(ZlibDecompressor *self, PyObject *const *args,
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("decompress", "argument 'data'", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (!noptargs) {
         goto skip_optional_pos;
     }
@@ -1025,10 +1002,6 @@ zlib_adler32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("adler32", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1079,10 +1052,6 @@ zlib_crc32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &data, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&data, 'C')) {
-        _PyArg_BadArgument("crc32", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (nargs < 2) {
         goto skip_optional;
     }
@@ -1129,4 +1098,4 @@ zlib_crc32(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 #ifndef ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
     #define ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
 #endif /* !defined(ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF) */
-/*[clinic end generated code: output=57ff7b511ab23132 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6dd97dc851c39031 input=a9049054013a1b77]*/
diff --git a/Modules/cmathmodule.c b/Modules/cmathmodule.c
index 1a31bdc824bb03..57bc55632be485 100644
--- a/Modules/cmathmodule.c
+++ b/Modules/cmathmodule.c
@@ -7,6 +7,7 @@
 #endif
 
 #include "Python.h"
+#include "pycore_complexobject.h" // _Py_c_neg()
 #include "pycore_pymath.h"        // _PY_SHORT_FLOAT_REPR
 /* we need DBL_MAX, DBL_MIN, DBL_EPSILON, DBL_MANT_DIG and FLT_RADIX from
    float.h.  We assume that FLT_RADIX is either 2 or 16. */
@@ -1216,30 +1217,29 @@ static PyMethodDef cmath_methods[] = {
 static int
 cmath_exec(PyObject *mod)
 {
-    if (PyModule_AddObject(mod, "pi", PyFloat_FromDouble(Py_MATH_PI)) < 0) {
+    if (PyModule_Add(mod, "pi", PyFloat_FromDouble(Py_MATH_PI)) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(mod, "e", PyFloat_FromDouble(Py_MATH_E)) < 0) {
+    if (PyModule_Add(mod, "e", PyFloat_FromDouble(Py_MATH_E)) < 0) {
         return -1;
     }
     // 2pi
-    if (PyModule_AddObject(mod, "tau", PyFloat_FromDouble(Py_MATH_TAU)) < 0) {
+    if (PyModule_Add(mod, "tau", PyFloat_FromDouble(Py_MATH_TAU)) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(mod, "inf", PyFloat_FromDouble(Py_INFINITY)) < 0) {
+    if (PyModule_Add(mod, "inf", PyFloat_FromDouble(Py_INFINITY)) < 0) {
         return -1;
     }
 
     Py_complex infj = {0.0, Py_INFINITY};
-    if (PyModule_AddObject(mod, "infj",
-                           PyComplex_FromCComplex(infj)) < 0) {
+    if (PyModule_Add(mod, "infj", PyComplex_FromCComplex(infj)) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(mod, "nan", PyFloat_FromDouble(fabs(Py_NAN))) < 0) {
+    if (PyModule_Add(mod, "nan", PyFloat_FromDouble(fabs(Py_NAN))) < 0) {
         return -1;
     }
     Py_complex nanj = {0.0, fabs(Py_NAN)};
-    if (PyModule_AddObject(mod, "nanj", PyComplex_FromCComplex(nanj)) < 0) {
+    if (PyModule_Add(mod, "nanj", PyComplex_FromCComplex(nanj)) < 0) {
         return -1;
     }
 
diff --git a/Modules/config.c.in b/Modules/config.c.in
index 6081f95759538f..53b4fb285498d0 100644
--- a/Modules/config.c.in
+++ b/Modules/config.c.in
@@ -45,7 +45,7 @@ struct _inittab _PyImport_Inittab[] = {
     /* This lives in Python/Python-ast.c */
     {"_ast", PyInit__ast},
 
-    /* This lives in Python/Python-tokenizer.c */
+    /* This lives in Python/Python-tokenize.c */
     {"_tokenize", PyInit__tokenize},
 
     /* These entries are here for sys.builtin_module_names */
diff --git a/Modules/errnomodule.c b/Modules/errnomodule.c
index fddde960a5fe9a..8287edbfb47f6c 100644
--- a/Modules/errnomodule.c
+++ b/Modules/errnomodule.c
@@ -1,41 +1,51 @@
-
 /* Errno module */
 
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
+#endif
+
 #include "Python.h"
+#include <errno.h>                // EPIPE
 
 /* Windows socket errors (WSA*)  */
 #ifdef MS_WINDOWS
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-#include <windows.h>
-/* The following constants were added to errno.h in VS2010 but have
-   preferred WSA equivalents. */
-#undef EADDRINUSE
-#undef EADDRNOTAVAIL
-#undef EAFNOSUPPORT
-#undef EALREADY
-#undef ECONNABORTED
-#undef ECONNREFUSED
-#undef ECONNRESET
-#undef EDESTADDRREQ
-#undef EHOSTUNREACH
-#undef EINPROGRESS
-#undef EISCONN
-#undef ELOOP
-#undef EMSGSIZE
-#undef ENETDOWN
-#undef ENETRESET
-#undef ENETUNREACH
-#undef ENOBUFS
-#undef ENOPROTOOPT
-#undef ENOTCONN
-#undef ENOTSOCK
-#undef EOPNOTSUPP
-#undef EPROTONOSUPPORT
-#undef EPROTOTYPE
-#undef ETIMEDOUT
-#undef EWOULDBLOCK
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#  include <windows.h>
+
+   // The following constants were added to errno.h in VS2010 but have
+   // preferred WSA equivalents.
+#  undef EADDRINUSE
+#  undef EADDRNOTAVAIL
+#  undef EAFNOSUPPORT
+#  undef EALREADY
+#  undef ECONNABORTED
+#  undef ECONNREFUSED
+#  undef ECONNRESET
+#  undef EDESTADDRREQ
+#  undef EHOSTUNREACH
+#  undef EINPROGRESS
+#  undef EISCONN
+#  undef ELOOP
+#  undef EMSGSIZE
+#  undef ENETDOWN
+#  undef ENETRESET
+#  undef ENETUNREACH
+#  undef ENOBUFS
+#  undef ENOPROTOOPT
+#  undef ENOTCONN
+#  undef ENOTSOCK
+#  undef EOPNOTSUPP
+#  undef EPROTONOSUPPORT
+#  undef EPROTOTYPE
+#  undef ETIMEDOUT
+#  undef EWOULDBLOCK
 #endif
 
 /*
@@ -81,9 +91,12 @@ _add_errcode(PyObject *module_dict, PyObject *error_dict, const char *name_str,
 static int
 errno_exec(PyObject *module)
 {
-    PyObject *module_dict = PyModule_GetDict(module);
+    PyObject *module_dict = PyModule_GetDict(module);  // Borrowed ref.
+    if (module_dict == NULL) {
+        return -1;
+    }
     PyObject *error_dict = PyDict_New();
-    if (!module_dict || !error_dict) {
+    if (error_dict == NULL) {
         return -1;
     }
     if (PyDict_SetItemString(module_dict, "errorcode", error_dict) < 0) {
diff --git a/Modules/faulthandler.c b/Modules/faulthandler.c
index 428b090193f093..a2e3c2300b3ce8 100644
--- a/Modules/faulthandler.c
+++ b/Modules/faulthandler.c
@@ -3,10 +3,13 @@
 #include "pycore_pyerrors.h"      // _Py_DumpExtensionModules
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_signal.h"        // Py_NSIG
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
 #include "pycore_traceback.h"     // _Py_DumpTracebackThreads
 
-#include <object.h>
-#include <signal.h>
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // _exit()
+#endif
+#include <signal.h>               // sigaction()
 #include <stdlib.h>               // abort()
 #if defined(HAVE_PTHREAD_SIGMASK) && !defined(HAVE_BROKEN_PTHREAD_SIGMASK) && defined(HAVE_PTHREAD_H)
 #  include <pthread.h>
@@ -15,7 +18,7 @@
 #  include <windows.h>
 #endif
 #ifdef HAVE_SYS_RESOURCE_H
-#  include <sys/resource.h>
+#  include <sys/resource.h>       // setrlimit()
 #endif
 
 #if defined(FAULTHANDLER_USE_ALT_STACK) && defined(HAVE_LINUX_AUXVEC_H) && defined(HAVE_SYS_AUXV_H)
@@ -23,10 +26,11 @@
 #  include <sys/auxv.h>           // getauxval()
 #endif
 
+
 /* Allocate at maximum 100 MiB of the stack to raise the stack overflow */
 #define STACK_OVERFLOW_MAX_SIZE (100 * 1024 * 1024)
 
-#define PUTS(fd, str) _Py_write_noraise(fd, str, strlen(str))
+#define PUTS(fd, str) (void)_Py_write_noraise(fd, str, strlen(str))
 
 
 // clang uses __attribute__((no_sanitize("undefined")))
@@ -115,7 +119,7 @@ faulthandler_get_fileno(PyObject **file_ptr)
         }
     }
     else if (PyLong_Check(file)) {
-        fd = _PyLong_AsInt(file);
+        fd = PyLong_AsInt(file);
         if (fd == -1 && PyErr_Occurred())
             return -1;
         if (fd < 0) {
@@ -145,10 +149,7 @@ faulthandler_get_fileno(PyObject **file_ptr)
         return -1;
     }
 
-    result = PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
-    if (result != NULL)
-        Py_DECREF(result);
-    else {
+    if (_PyFile_Flush(file) < 0) {
         /* ignore flush() error */
         PyErr_Clear();
     }
@@ -176,7 +177,6 @@ faulthandler_dump_traceback(int fd, int all_threads,
                             PyInterpreterState *interp)
 {
     static volatile int reentrant = 0;
-    PyThreadState *tstate;
 
     if (reentrant)
         return;
@@ -191,7 +191,7 @@ faulthandler_dump_traceback(int fd, int all_threads,
        fault if the thread released the GIL, and so this function cannot be
        used. Read the thread specific storage (TSS) instead: call
        PyGILState_GetThisThreadState(). */
-    tstate = PyGILState_GetThisThreadState();
+    PyThreadState *tstate = PyGILState_GetThisThreadState();
 
     if (all_threads) {
         (void)_Py_DumpTracebackThreads(fd, NULL, tstate);
@@ -414,11 +414,10 @@ faulthandler_allocate_stack(void)
 
     int err = sigaltstack(&stack, &old_stack);
     if (err) {
+        PyErr_SetFromErrno(PyExc_OSError);
         /* Release the stack to retry sigaltstack() next time */
         PyMem_Free(stack.ss_sp);
         stack.ss_sp = NULL;
-
-        PyErr_SetFromErrno(PyExc_OSError);
         return -1;
     }
     return 0;
@@ -576,7 +575,7 @@ faulthandler_thread(void *unused)
         /* Timeout => dump traceback */
         assert(st == PY_LOCK_FAILURE);
 
-        _Py_write_noraise(thread.fd, thread.header, (int)thread.header_len);
+        (void)_Py_write_noraise(thread.fd, thread.header, (int)thread.header_len);
 
         errmsg = _Py_DumpTracebackThreads(thread.fd, thread.interp, NULL);
         ok = (errmsg == NULL);
diff --git a/Modules/fcntlmodule.c b/Modules/fcntlmodule.c
index 6ca0b62bc5dca8..fd03abf0561da6 100644
--- a/Modules/fcntlmodule.c
+++ b/Modules/fcntlmodule.c
@@ -1,7 +1,8 @@
-
 /* fcntl module */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
 
 #include "Python.h"
 
@@ -211,11 +212,12 @@ fcntl_ioctl_impl(PyObject *module, int fd, unsigned int code,
             if (mutate_arg && (len <= IOCTL_BUFSZ)) {
                 memcpy(str, buf, len);
             }
-            PyBuffer_Release(&pstr); /* No further access to str below this point */
             if (ret < 0) {
                 PyErr_SetFromErrno(PyExc_OSError);
+                PyBuffer_Release(&pstr);
                 return NULL;
             }
+            PyBuffer_Release(&pstr);
             if (mutate_arg) {
                 return PyLong_FromLong(ret);
             }
@@ -240,8 +242,8 @@ fcntl_ioctl_impl(PyObject *module, int fd, unsigned int code,
             ret = ioctl(fd, code, buf);
             Py_END_ALLOW_THREADS
             if (ret < 0) {
-                PyBuffer_Release(&pstr);
                 PyErr_SetFromErrno(PyExc_OSError);
+                PyBuffer_Release(&pstr);
                 return NULL;
             }
             PyBuffer_Release(&pstr);
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c
index 26ddcdd538a4d4..8233fc56159b60 100644
--- a/Modules/gcmodule.c
+++ b/Modules/gcmodule.c
@@ -24,12 +24,15 @@
 */
 
 #include "Python.h"
+#include "pycore_ceval.h"         // _Py_set_eval_breaker_bit()
 #include "pycore_context.h"
+#include "pycore_dict.h"          // _PyDict_MaybeUntrack()
 #include "pycore_initconfig.h"
-#include "pycore_interp.h"      // PyInterpreterState.gc
+#include "pycore_interp.h"        // PyInterpreterState.gc
 #include "pycore_object.h"
 #include "pycore_pyerrors.h"
-#include "pycore_pystate.h"     // _PyThreadState_GET()
+#include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_weakref.h"       // _PyWeakref_ClearRef()
 #include "pydtrace.h"
 
 typedef struct _gc_runtime_state GCState;
@@ -68,11 +71,9 @@ module gc
 // most gc_list_* functions for it.
 #define NEXT_MASK_UNREACHABLE  (1)
 
-/* Get an object's GC head */
-#define AS_GC(o) ((PyGC_Head *)(((char *)(o))-sizeof(PyGC_Head)))
+#define AS_GC(op) _Py_AS_GC(op)
+#define FROM_GC(gc) _Py_FROM_GC(gc)
 
-/* Get the object given the GC head */
-#define FROM_GC(g) ((PyObject *)(((char *)(g))+sizeof(PyGC_Head)))
 
 static inline int
 gc_is_collecting(PyGC_Head *g)
@@ -460,6 +461,7 @@ update_refs(PyGC_Head *containers)
 static int
 visit_decref(PyObject *op, void *parent)
 {
+    OBJECT_STAT_INC(object_visits);
     _PyObject_ASSERT(_PyObject_CAST(parent), !_PyObject_IsFreed(op));
 
     if (_PyObject_IS_GC(op)) {
@@ -489,15 +491,17 @@ subtract_refs(PyGC_Head *containers)
         PyObject *op = FROM_GC(gc);
         traverse = Py_TYPE(op)->tp_traverse;
         (void) traverse(op,
-                        (visitproc)visit_decref,
+                        visit_decref,
                         op);
     }
 }
 
 /* A traversal callback for move_unreachable. */
 static int
-visit_reachable(PyObject *op, PyGC_Head *reachable)
+visit_reachable(PyObject *op, void *arg)
 {
+    PyGC_Head *reachable = arg;
+    OBJECT_STAT_INC(object_visits);
     if (!_PyObject_IS_GC(op)) {
         return 0;
     }
@@ -600,7 +604,7 @@ move_unreachable(PyGC_Head *young, PyGC_Head *unreachable)
             // NOTE: visit_reachable may change gc->_gc_next when
             // young->_gc_prev == gc.  Don't do gc = GC_NEXT(gc) before!
             (void) traverse(op,
-                    (visitproc)visit_reachable,
+                    visit_reachable,
                     (void *)young);
             // relink gc_prev to prev element.
             _PyGCHead_SET_PREV(gc, prev);
@@ -723,8 +727,10 @@ clear_unreachable_mask(PyGC_Head *unreachable)
 
 /* A traversal callback for move_legacy_finalizer_reachable. */
 static int
-visit_move(PyObject *op, PyGC_Head *tolist)
+visit_move(PyObject *op, void *arg)
 {
+    PyGC_Head *tolist = arg;
+    OBJECT_STAT_INC(object_visits);
     if (_PyObject_IS_GC(op)) {
         PyGC_Head *gc = AS_GC(op);
         if (gc_is_collecting(gc)) {
@@ -747,7 +753,7 @@ move_legacy_finalizer_reachable(PyGC_Head *finalizers)
         /* Note that the finalizers list may grow during this. */
         traverse = Py_TYPE(FROM_GC(gc))->tp_traverse;
         (void) traverse(FROM_GC(gc),
-                        (visitproc)visit_move,
+                        visit_move,
                         (void *)finalizers);
     }
 }
@@ -861,7 +867,7 @@ handle_weakrefs(PyGC_Head *unreachable, PyGC_Head *old)
              * to imagine how calling it later could create a problem for us.  wr
              * is moved to wrcb_to_call in this case.
              */
-            if (gc_is_collecting(AS_GC(wr))) {
+            if (gc_is_collecting(AS_GC((PyObject *)wr))) {
                 /* it should already have been cleared above */
                 assert(wr->wr_object == Py_None);
                 continue;
@@ -873,7 +879,7 @@ handle_weakrefs(PyGC_Head *unreachable, PyGC_Head *old)
             Py_INCREF(wr);
 
             /* Move wr to wrcb_to_call, for the next pass. */
-            wrasgc = AS_GC(wr);
+            wrasgc = AS_GC((PyObject *)wr);
             assert(wrasgc != next); /* wrasgc is reachable, but
                                        next isn't, so they can't
                                        be the same */
@@ -1028,8 +1034,8 @@ delete_garbage(PyThreadState *tstate, GCState *gcstate,
                 Py_INCREF(op);
                 (void) clear(op);
                 if (_PyErr_Occurred(tstate)) {
-                    _PyErr_WriteUnraisableMsg("in tp_clear of",
-                                              (PyObject*)Py_TYPE(op));
+                    PyErr_FormatUnraisable("Exception ignored in tp_clear of %s",
+                                           Py_TYPE(op)->tp_name);
                 }
                 Py_DECREF(op);
             }
@@ -1195,6 +1201,12 @@ gc_collect_main(PyThreadState *tstate, int generation,
                 Py_ssize_t *n_collected, Py_ssize_t *n_uncollectable,
                 int nofail)
 {
+    GC_STAT_ADD(generation, collections, 1);
+#ifdef Py_STATS
+    if (_Py_stats) {
+        _Py_stats->object_stats.object_visits = 0;
+    }
+#endif
     int i;
     Py_ssize_t m = 0; /* # objects collected */
     Py_ssize_t n = 0; /* # unreachable objects that couldn't be collected */
@@ -1334,7 +1346,7 @@ gc_collect_main(PyThreadState *tstate, int generation,
             _PyErr_Clear(tstate);
         }
         else {
-            _PyErr_WriteUnraisableMsg("in garbage collection", NULL);
+            PyErr_FormatUnraisable("Exception ignored in garbage collection");
         }
     }
 
@@ -1351,6 +1363,15 @@ gc_collect_main(PyThreadState *tstate, int generation,
     stats->collected += m;
     stats->uncollectable += n;
 
+    GC_STAT_ADD(generation, objects_collected, m);
+#ifdef Py_STATS
+    if (_Py_stats) {
+        GC_STAT_ADD(generation, object_visits,
+            _Py_stats->object_stats.object_visits);
+        _Py_stats->object_stats.object_visits = 0;
+    }
+#endif
+
     if (PyDTrace_GC_DONE_ENABLED()) {
         PyDTrace_GC_DONE(n + m);
     }
@@ -1384,7 +1405,7 @@ invoke_gc_callback(PyThreadState *tstate, const char *phase,
             "collected", collected,
             "uncollectable", uncollectable);
         if (info == NULL) {
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored on invoking gc callbacks");
             return;
         }
     }
@@ -1392,7 +1413,7 @@ invoke_gc_callback(PyThreadState *tstate, const char *phase,
     PyObject *phase_obj = PyUnicode_FromString(phase);
     if (phase_obj == NULL) {
         Py_XDECREF(info);
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on invoking gc callbacks");
         return;
     }
 
@@ -1665,8 +1686,9 @@ gc_get_count_impl(PyObject *module)
 }
 
 static int
-referrersvisit(PyObject* obj, PyObject *objs)
+referrersvisit(PyObject* obj, void *arg)
 {
+    PyObject *objs = arg;
     Py_ssize_t i;
     for (i = 0; i < PyTuple_GET_SIZE(objs); i++)
         if (PyTuple_GET_ITEM(objs, i) == obj)
@@ -1685,7 +1707,7 @@ gc_referrers_for(PyObject *objs, PyGC_Head *list, PyObject *resultlist)
         traverse = Py_TYPE(obj)->tp_traverse;
         if (obj == objs || obj == resultlist)
             continue;
-        if (traverse(obj, (visitproc)referrersvisit, objs)) {
+        if (traverse(obj, referrersvisit, objs)) {
             if (PyList_Append(resultlist, obj) < 0)
                 return 0; /* error */
         }
@@ -1721,8 +1743,9 @@ gc_get_referrers(PyObject *self, PyObject *args)
 
 /* Append obj to list; return true if error (out of memory), false if OK. */
 static int
-referentsvisit(PyObject *obj, PyObject *list)
+referentsvisit(PyObject *obj, void *arg)
 {
+    PyObject *list = arg;
     return PyList_Append(list, obj) < 0;
 }
 
@@ -1751,7 +1774,7 @@ gc_get_referents(PyObject *self, PyObject *args)
         traverse = Py_TYPE(obj)->tp_traverse;
         if (! traverse)
             continue;
-        if (traverse(obj, (visitproc)referentsvisit, result)) {
+        if (traverse(obj, referentsvisit, result)) {
             Py_DECREF(result);
             return NULL;
         }
@@ -1909,7 +1932,7 @@ static PyObject *
 gc_is_finalized(PyObject *module, PyObject *obj)
 /*[clinic end generated code: output=e1516ac119a918ed input=201d0c58f69ae390]*/
 {
-    if (_PyObject_IS_GC(obj) && _PyGCHead_FINALIZED(AS_GC(obj))) {
+    if (_PyObject_IS_GC(obj) && _PyGC_FINALIZED(obj)) {
          Py_RETURN_TRUE;
     }
     Py_RETURN_FALSE;
@@ -2256,11 +2279,7 @@ _Py_ScheduleGC(PyInterpreterState *interp)
     if (gcstate->collecting == 1) {
         return;
     }
-    struct _ceval_state *ceval = &interp->ceval;
-    if (!_Py_atomic_load_relaxed(&ceval->gc_scheduled)) {
-        _Py_atomic_store_relaxed(&ceval->gc_scheduled, 1);
-        _Py_atomic_store_relaxed(&ceval->eval_breaker, 1);
-    }
+    _Py_set_eval_breaker_bit(interp, _PY_GC_SCHEDULED_BIT, 1);
 }
 
 void
@@ -2381,14 +2400,16 @@ PyObject_GC_Del(void *op)
     size_t presize = _PyType_PreHeaderSize(((PyObject *)op)->ob_type);
     PyGC_Head *g = AS_GC(op);
     if (_PyObject_GC_IS_TRACKED(op)) {
+        gc_list_remove(g);
 #ifdef Py_DEBUG
+        PyObject *exc = PyErr_GetRaisedException();
         if (PyErr_WarnExplicitFormat(PyExc_ResourceWarning, "gc", 0,
                                      "gc", NULL, "Object of type %s is not untracked before destruction",
                                      ((PyObject*)op)->ob_type->tp_name)) {
             PyErr_WriteUnraisable(NULL);
         }
+        PyErr_SetRaisedException(exc);
 #endif
-        gc_list_remove(g);
     }
     GCState *gcstate = get_gc_state();
     if (gcstate->generations[0].count > 0) {
@@ -2409,7 +2430,7 @@ PyObject_GC_IsTracked(PyObject* obj)
 int
 PyObject_GC_IsFinalized(PyObject *obj)
 {
-    if (_PyObject_IS_GC(obj) && _PyGCHead_FINALIZED(AS_GC(obj))) {
+    if (_PyObject_IS_GC(obj) && _PyGC_FINALIZED(obj)) {
          return 1;
     }
     return 0;
diff --git a/Modules/getaddrinfo.c b/Modules/getaddrinfo.c
index f1c28d7d9312ac..6fb6062a6520d9 100644
--- a/Modules/getaddrinfo.c
+++ b/Modules/getaddrinfo.c
@@ -51,7 +51,6 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stddef.h>
-#include <ctype.h>
 #include <unistd.h>
 
 #include "addrinfo.h"
@@ -228,8 +227,9 @@ str_isnumber(const char *p)
 {
     unsigned char *q = (unsigned char *)p;
     while (*q) {
-        if (! isdigit(*q))
+        if (!Py_ISDIGIT(*q)) {
             return NO;
+        }
         q++;
     }
     return YES;
diff --git a/Modules/getbuildinfo.c b/Modules/getbuildinfo.c
index a24750b76c09bc..8d553d106c6ab5 100644
--- a/Modules/getbuildinfo.c
+++ b/Modules/getbuildinfo.c
@@ -1,4 +1,9 @@
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
+#include "pycore_pylifecycle.h"   // _Py_gitidentifier()
 
 #ifndef DONT_HAVE_STDIO_H
 #include <stdio.h>
diff --git a/Modules/getpath.c b/Modules/getpath.c
index 237fe8c0c2c221..6c1078b8914522 100644
--- a/Modules/getpath.c
+++ b/Modules/getpath.c
@@ -1,12 +1,14 @@
 /* Return the initial module search path. */
 
 #include "Python.h"
+#include "pycore_fileutils.h"     // _Py_abspath()
+#include "pycore_initconfig.h"    // _PyStatus_EXCEPTION()
+#include "pycore_pathconfig.h"    // _PyPathConfig_ReadGlobal()
+#include "pycore_pymem.h"         // _PyMem_RawWcsdup()
+#include "pycore_pystate.h"       // _PyThreadState_GET()
+
 #include "marshal.h"              // PyMarshal_ReadObjectFromString
 #include "osdefs.h"               // DELIM
-#include "pycore_initconfig.h"
-#include "pycore_fileutils.h"
-#include "pycore_pathconfig.h"
-#include "pycore_pymem.h"         // _PyMem_SetDefaultAllocator()
 #include <wchar.h>
 
 #ifdef MS_WINDOWS
@@ -15,6 +17,7 @@
 #endif
 
 #ifdef __APPLE__
+#  include <dlfcn.h>
 #  include <mach-o/dyld.h>
 #endif
 
@@ -341,11 +344,12 @@ getpath_readlines(PyObject *Py_UNUSED(self), PyObject *args)
         return NULL;
     }
     FILE *fp = _Py_wfopen(path, L"rb");
-    PyMem_Free((void *)path);
     if (!fp) {
         PyErr_SetFromErrno(PyExc_OSError);
+        PyMem_Free((void *)path);
         return NULL;
     }
+    PyMem_Free((void *)path);
 
     r = PyList_New(0);
     if (!r) {
@@ -765,16 +769,11 @@ library_to_dict(PyObject *dict, const char *key)
            which is in the framework, not relative to the executable, which may
            be outside of the framework. Except when we're in the build
            directory... */
-        NSSymbol symbol = NSLookupAndBindSymbol("_Py_Initialize");
-        if (symbol != NULL) {
-            NSModule pythonModule = NSModuleForSymbol(symbol);
-            if (pythonModule != NULL) {
-                /* Use dylib functions to find out where the framework was loaded from */
-                const char *path = NSLibraryNameForModule(pythonModule);
-                if (path) {
-                    strncpy(modPath, path, MAXPATHLEN);
-                    modPathInitialized = 1;
-                }
+        Dl_info pythonInfo;
+        if (dladdr(&Py_Initialize, &pythonInfo)) {
+            if (pythonInfo.dli_fname) {
+                strncpy(modPath, pythonInfo.dli_fname, MAXPATHLEN);
+                modPathInitialized = 1;
             }
         }
     }
@@ -818,7 +817,7 @@ _PyConfig_InitPathConfig(PyConfig *config, int compute_path_config)
         return status;
     }
 
-    if (!_PyThreadState_UncheckedGet()) {
+    if (!_PyThreadState_GET()) {
         return PyStatus_Error("cannot calculate path configuration without GIL");
     }
 
@@ -907,7 +906,7 @@ _PyConfig_InitPathConfig(PyConfig *config, int compute_path_config)
     ) {
         Py_DECREF(co);
         Py_DECREF(dict);
-        _PyErr_WriteUnraisableMsg("error evaluating initial values", NULL);
+        PyErr_FormatUnraisable("Exception ignored in preparing getpath");
         return PyStatus_Error("error evaluating initial values");
     }
 
@@ -916,30 +915,13 @@ _PyConfig_InitPathConfig(PyConfig *config, int compute_path_config)
 
     if (!r) {
         Py_DECREF(dict);
-        _PyErr_WriteUnraisableMsg("error evaluating path", NULL);
+        PyErr_FormatUnraisable("Exception ignored in running getpath");
         return PyStatus_Error("error evaluating path");
     }
     Py_DECREF(r);
 
-#if 0
-    PyObject *it = PyObject_GetIter(configDict);
-    for (PyObject *k = PyIter_Next(it); k; k = PyIter_Next(it)) {
-        if (!strcmp("__builtins__", PyUnicode_AsUTF8(k))) {
-            Py_DECREF(k);
-            continue;
-        }
-        fprintf(stderr, "%s = ", PyUnicode_AsUTF8(k));
-        PyObject *o = PyDict_GetItem(configDict, k);
-        o = PyObject_Repr(o);
-        fprintf(stderr, "%s\n", PyUnicode_AsUTF8(o));
-        Py_DECREF(o);
-        Py_DECREF(k);
-    }
-    Py_DECREF(it);
-#endif
-
     if (_PyConfig_FromDict(config, configDict) < 0) {
-        _PyErr_WriteUnraisableMsg("reading getpath results", NULL);
+        PyErr_FormatUnraisable("Exception ignored in reading getpath results");
         Py_DECREF(dict);
         return PyStatus_Error("error getting getpath results");
     }
@@ -948,4 +930,3 @@ _PyConfig_InitPathConfig(PyConfig *config, int compute_path_config)
 
     return _PyStatus_OK();
 }
-
diff --git a/Modules/getpath.py b/Modules/getpath.py
index 9913fcba497d30..1410ffdbed8c70 100644
--- a/Modules/getpath.py
+++ b/Modules/getpath.py
@@ -229,17 +229,16 @@ def search_up(prefix, *landmarks, test=isfile):
 
 pythonpath = config.get('module_search_paths')
 pythonpath_was_set = config.get('module_search_paths_set')
+stdlib_dir = config.get('stdlib_dir')
+stdlib_dir_was_set_in_config = bool(stdlib_dir)
 
 real_executable_dir = None
-stdlib_dir = None
 platstdlib_dir = None
 
 # ******************************************************************************
 # CALCULATE program_name
 # ******************************************************************************
 
-program_name_was_set = bool(program_name)
-
 if not program_name:
     try:
         program_name = config.get('orig_argv', [])[0]
@@ -509,11 +508,12 @@ def search_up(prefix, *landmarks, test=isfile):
             build_stdlib_prefix = build_prefix
         else:
             build_stdlib_prefix = search_up(build_prefix, *BUILDSTDLIB_LANDMARKS)
-        # Always use the build prefix for stdlib
-        if build_stdlib_prefix:
-            stdlib_dir = joinpath(build_stdlib_prefix, 'Lib')
-        else:
-            stdlib_dir = joinpath(build_prefix, 'Lib')
+        # Use the build prefix for stdlib when not explicitly set
+        if not stdlib_dir_was_set_in_config:
+            if build_stdlib_prefix:
+                stdlib_dir = joinpath(build_stdlib_prefix, 'Lib')
+            else:
+                stdlib_dir = joinpath(build_prefix, 'Lib')
         # Only use the build prefix for prefix if it hasn't already been set
         if not prefix:
             prefix = build_stdlib_prefix
@@ -545,8 +545,9 @@ def search_up(prefix, *landmarks, test=isfile):
         prefix, had_delim, exec_prefix = home.partition(DELIM)
         if not had_delim:
             exec_prefix = prefix
-        # Reset the standard library directory if it was already set
-        stdlib_dir = None
+        # Reset the standard library directory if it was not explicitly set
+        if not stdlib_dir_was_set_in_config:
+            stdlib_dir = None
 
 
     # First try to detect prefix by looking alongside our runtime library, if known
@@ -562,7 +563,8 @@ def search_up(prefix, *landmarks, test=isfile):
         if STDLIB_SUBDIR and STDLIB_LANDMARKS and not prefix:
             if any(isfile(joinpath(library_dir, f)) for f in STDLIB_LANDMARKS):
                 prefix = library_dir
-                stdlib_dir = joinpath(prefix, STDLIB_SUBDIR)
+                if not stdlib_dir_was_set_in_config:
+                    stdlib_dir = joinpath(prefix, STDLIB_SUBDIR)
 
 
     # Detect prefix by looking for zip file
@@ -573,7 +575,7 @@ def search_up(prefix, *landmarks, test=isfile):
                 prefix = executable_dir
         else:
             prefix = search_up(executable_dir, ZIP_LANDMARK)
-        if prefix:
+        if prefix and not stdlib_dir_was_set_in_config:
             stdlib_dir = joinpath(prefix, STDLIB_SUBDIR)
             if not isdir(stdlib_dir):
                 stdlib_dir = None
diff --git a/Modules/grpmodule.c b/Modules/grpmodule.c
index 57cdde6064c24e..9756f1c2fb15b1 100644
--- a/Modules/grpmodule.c
+++ b/Modules/grpmodule.c
@@ -1,10 +1,16 @@
 
 /* UNIX group file access module */
 
+// clinic/grpmodule.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 #include "posixmodule.h"
 
-#include <grp.h>
+#include <grp.h>                  // getgrgid_r()
+#include <unistd.h>               // sysconf()
 
 #include "clinic/grpmodule.c.h"
 /*[clinic input]
@@ -65,8 +71,14 @@ mkgrent(PyObject *module, struct group *p)
         Py_DECREF(v);
         return NULL;
     }
-    for (member = p->gr_mem; *member != NULL; member++) {
-        PyObject *x = PyUnicode_DecodeFSDefault(*member);
+    for (member = p->gr_mem; ; member++) {
+        char *group_member;
+        // member can be misaligned
+        memcpy(&group_member, member, sizeof(group_member));
+        if (group_member == NULL) {
+            break;
+        }
+        PyObject *x = PyUnicode_DecodeFSDefault(group_member);
         if (x == NULL || PyList_Append(w, x) != 0) {
             Py_XDECREF(x);
             Py_DECREF(w);
diff --git a/Modules/hashlib.h b/Modules/hashlib.h
index 56ae7a5e50bf58..7105e68af7b806 100644
--- a/Modules/hashlib.h
+++ b/Modules/hashlib.h
@@ -1,5 +1,7 @@
 /* Common code for use by all hashlib related modules. */
 
+#include "pycore_lock.h"        // PyMutex
+
 /*
  * Given a PyObject* obj, fill in the Py_buffer* viewp with the result
  * of PyObject_GetBuffer.  Sets an exception and issues the erraction
@@ -37,23 +39,40 @@
  * LEAVE_HASHLIB block or explicitly acquire and release the lock inside
  * a PY_BEGIN / END_ALLOW_THREADS block if they wish to release the GIL for
  * an operation.
+ *
+ * These only drop the GIL if the lock acquisition itself is likely to
+ * block. Thus the non-blocking acquire gating the GIL release for a
+ * blocking lock acquisition. The intent of these macros is to surround
+ * the assumed always "fast" operations that you aren't releasing the
+ * GIL around.  Otherwise use code similar to what you see in hash
+ * function update() methods.
  */
 
 #include "pythread.h"
 #define ENTER_HASHLIB(obj) \
-    if ((obj)->lock) { \
-        if (!PyThread_acquire_lock((obj)->lock, 0)) { \
-            Py_BEGIN_ALLOW_THREADS \
-            PyThread_acquire_lock((obj)->lock, 1); \
-            Py_END_ALLOW_THREADS \
-        } \
+    if ((obj)->use_mutex) { \
+        PyMutex_Lock(&(obj)->mutex); \
     }
 #define LEAVE_HASHLIB(obj) \
-    if ((obj)->lock) { \
-        PyThread_release_lock((obj)->lock); \
+    if ((obj)->use_mutex) { \
+        PyMutex_Unlock(&(obj)->mutex); \
     }
 
-/* TODO(gps): We should probably make this a module or EVPobject attribute
+#ifdef Py_GIL_DISABLED
+#define HASHLIB_INIT_MUTEX(obj) \
+    do { \
+        (obj)->mutex = (PyMutex){0}; \
+        (obj)->use_mutex = true; \
+    } while (0)
+#else
+#define HASHLIB_INIT_MUTEX(obj) \
+    do { \
+        (obj)->mutex = (PyMutex){0}; \
+        (obj)->use_mutex = false; \
+    } while (0)
+#endif
+
+/* TODO(gpshead): We should make this a module or class attribute
  * to allow the user to optimize based on the platform they're using. */
 #define HASHLIB_GIL_MINSIZE 2048
 
diff --git a/Modules/itertoolsmodule.c b/Modules/itertoolsmodule.c
index 555eab09935e9e..ab99fa4d873bf5 100644
--- a/Modules/itertoolsmodule.c
+++ b/Modules/itertoolsmodule.c
@@ -1,12 +1,12 @@
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_long.h"          // _PyLong_GetZero()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_typeobject.h"    // _PyType_GetModuleState()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
-#include "structmember.h"         // PyMemberDef
+
 #include <stddef.h>               // offsetof()
 
 /* Itertools module written and maintained
@@ -93,6 +93,16 @@ class itertools.pairwise "pairwiseobject *" "clinic_state()->pairwise_type"
 #undef clinic_state_by_cls
 #undef clinic_state
 
+/* Deprecation of pickle support:  GH-101588 *********************************/
+
+#define ITERTOOL_PICKLE_DEPRECATION                                           \
+    if (PyErr_WarnEx(                                                         \
+            PyExc_DeprecationWarning,                                         \
+            "Pickle, copy, and deepcopy support will be "                     \
+            "removed from itertools in Python 3.14.", 1) < 0) {               \
+        return NULL;                                                          \
+    }
+
 /* batched object ************************************************************/
 
 /* Note:  The built-in zip() function includes a "strict" argument
@@ -320,21 +330,30 @@ pairwise_next(pairwiseobject *po)
         return NULL;
     }
     if (old == NULL) {
-        po->old = old = (*Py_TYPE(it)->tp_iternext)(it);
+        old = (*Py_TYPE(it)->tp_iternext)(it);
+        Py_XSETREF(po->old, old);
         if (old == NULL) {
             Py_CLEAR(po->it);
             return NULL;
         }
+        it = po->it;
+        if (it == NULL) {
+            Py_CLEAR(po->old);
+            return NULL;
+        }
     }
+    Py_INCREF(old);
     new = (*Py_TYPE(it)->tp_iternext)(it);
     if (new == NULL) {
         Py_CLEAR(po->it);
         Py_CLEAR(po->old);
+        Py_DECREF(old);
         return NULL;
     }
     /* Future optimization: Reuse the result tuple as we do in enumerate() */
     result = PyTuple_Pack(2, old, new);
-    Py_SETREF(po->old, new);
+    Py_XSETREF(po->old, new);
+    Py_DECREF(old);
     return result;
 }
 
@@ -506,6 +525,7 @@ groupby_reduce(groupbyobject *lz, PyObject *Py_UNUSED(ignored))
     /* reduce as a 'new' call with an optional 'setstate' if groupby
      * has started
      */
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *value;
     if (lz->tgtkey && lz->currkey && lz->currvalue)
         value = Py_BuildValue("O(OO)(OOO)", Py_TYPE(lz),
@@ -522,6 +542,7 @@ PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
 static PyObject *
 groupby_setstate(groupbyobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *currkey, *currvalue, *tgtkey;
     if (!PyTuple_Check(state)) {
         PyErr_SetString(PyExc_TypeError, "state is not a tuple");
@@ -660,6 +681,7 @@ _grouper_next(_grouperobject *igo)
 static PyObject *
 _grouper_reduce(_grouperobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (((groupbyobject *)lz->parent)->currgrouper != lz) {
         return Py_BuildValue("N(())", _PyEval_GetBuiltin(&_Py_ID(iter)));
     }
@@ -828,6 +850,7 @@ teedataobject_dealloc(teedataobject *tdo)
 static PyObject *
 teedataobject_reduce(teedataobject *tdo, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     int i;
     /* create a temporary list of already iterated values */
     PyObject *values = PyList_New(tdo->numread);
@@ -1041,12 +1064,14 @@ tee_dealloc(teeobject *to)
 static PyObject *
 tee_reduce(teeobject *to, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     return Py_BuildValue("O(())(Oi)", Py_TYPE(to), to->dataobj, to->index);
 }
 
 static PyObject *
 tee_setstate(teeobject *to, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     teedataobject *tdo;
     int index;
     if (!PyTuple_Check(state)) {
@@ -1075,7 +1100,7 @@ static PyMethodDef tee_methods[] = {
 };
 
 static PyMemberDef tee_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(teeobject, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(teeobject, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -1131,7 +1156,7 @@ itertools_tee_impl(PyObject *module, PyObject *iterable, Py_ssize_t n)
         return NULL;
     }
 
-    if (_PyObject_LookupAttr(it, &_Py_ID(__copy__), &copyfunc) < 0) {
+    if (PyObject_GetOptionalAttr(it, &_Py_ID(__copy__), &copyfunc) < 0) {
         Py_DECREF(it);
         Py_DECREF(result);
         return NULL;
@@ -1275,6 +1300,7 @@ cycle_next(cycleobject *lz)
 static PyObject *
 cycle_reduce(cycleobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     /* Create a new cycle with the iterator tuple, then set the saved state */
     if (lz->it == NULL) {
         PyObject *it = PyObject_GetIter(lz->saved);
@@ -1298,6 +1324,7 @@ cycle_reduce(cycleobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 cycle_setstate(cycleobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *saved=NULL;
     int firstpass;
     if (!PyTuple_Check(state)) {
@@ -1446,12 +1473,14 @@ dropwhile_next(dropwhileobject *lz)
 static PyObject *
 dropwhile_reduce(dropwhileobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     return Py_BuildValue("O(OO)l", Py_TYPE(lz), lz->func, lz->it, lz->start);
 }
 
 static PyObject *
 dropwhile_setstate(dropwhileobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     int start = PyObject_IsTrue(state);
     if (start < 0)
         return NULL;
@@ -1584,12 +1613,14 @@ takewhile_next(takewhileobject *lz)
 static PyObject *
 takewhile_reduce(takewhileobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     return Py_BuildValue("O(OO)l", Py_TYPE(lz), lz->func, lz->it, lz->stop);
 }
 
 static PyObject *
 takewhile_reduce_setstate(takewhileobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     int stop = PyObject_IsTrue(state);
 
     if (stop < 0)
@@ -1786,6 +1817,7 @@ islice_next(isliceobject *lz)
 static PyObject *
 islice_reduce(isliceobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     /* When unpickled, generate a new object with the same bounds,
      * then 'setstate' with the next and count
      */
@@ -1818,6 +1850,7 @@ islice_reduce(isliceobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 islice_setstate(isliceobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     Py_ssize_t cnt = PyLong_AsSsize_t(state);
 
     if (cnt == -1 && PyErr_Occurred())
@@ -1953,6 +1986,7 @@ starmap_next(starmapobject *lz)
 static PyObject *
 starmap_reduce(starmapobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     /* Just pickle the iterator */
     return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->func, lz->it);
 }
@@ -2109,6 +2143,7 @@ chain_next(chainobject *lz)
 static PyObject *
 chain_reduce(chainobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (lz->source) {
         /* we can't pickle function objects (itertools.from_iterable) so
          * we must use setstate to replace the iterable.  One day we
@@ -2128,6 +2163,7 @@ chain_reduce(chainobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 chain_setstate(chainobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *source, *active=NULL;
 
     if (!PyTuple_Check(state)) {
@@ -2403,6 +2439,7 @@ product_next(productobject *lz)
 static PyObject *
 product_reduce(productobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (lz->stopped) {
         return Py_BuildValue("O(())", Py_TYPE(lz));
     } else if (lz->result == NULL) {
@@ -2433,6 +2470,7 @@ product_reduce(productobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 product_setstate(productobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *result;
     Py_ssize_t n, i;
 
@@ -2711,6 +2749,7 @@ combinations_next(combinationsobject *co)
 static PyObject *
 combinations_reduce(combinationsobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (lz->result == NULL) {
         return Py_BuildValue("O(On)", Py_TYPE(lz), lz->pool, lz->r);
     } else if (lz->stopped) {
@@ -2740,6 +2779,7 @@ combinations_reduce(combinationsobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 combinations_setstate(combinationsobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *result;
     Py_ssize_t i;
     Py_ssize_t n = PyTuple_GET_SIZE(lz->pool);
@@ -3019,6 +3059,7 @@ cwr_next(cwrobject *co)
 static PyObject *
 cwr_reduce(cwrobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (lz->result == NULL) {
         return Py_BuildValue("O(On)", Py_TYPE(lz), lz->pool, lz->r);
     } else if (lz->stopped) {
@@ -3047,6 +3088,7 @@ cwr_reduce(cwrobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 cwr_setstate(cwrobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *result;
     Py_ssize_t n, i;
 
@@ -3354,6 +3396,7 @@ permutations_next(permutationsobject *po)
 static PyObject *
 permutations_reduce(permutationsobject *po, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (po->result == NULL) {
         return Py_BuildValue("O(On)", Py_TYPE(po), po->pool, po->r);
     } else if (po->stopped) {
@@ -3396,6 +3439,7 @@ permutations_reduce(permutationsobject *po, PyObject *Py_UNUSED(ignored))
 static PyObject *
 permutations_setstate(permutationsobject *po, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     PyObject *indices, *cycles, *result;
     Py_ssize_t n, i;
 
@@ -3593,6 +3637,7 @@ accumulate_next(accumulateobject *lz)
 static PyObject *
 accumulate_reduce(accumulateobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     itertools_state *state = lz->state;
 
     if (lz->initial != Py_None) {
@@ -3628,6 +3673,7 @@ accumulate_reduce(accumulateobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 accumulate_setstate(accumulateobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     Py_INCREF(state);
     Py_XSETREF(lz->total, state);
     Py_RETURN_NONE;
@@ -3776,6 +3822,7 @@ compress_next(compressobject *lz)
 static PyObject *
 compress_reduce(compressobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     return Py_BuildValue("O(OO)", Py_TYPE(lz),
         lz->data, lz->selectors);
 }
@@ -3908,6 +3955,7 @@ filterfalse_next(filterfalseobject *lz)
 static PyObject *
 filterfalse_reduce(filterfalseobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->func, lz->it);
 }
 
@@ -4135,6 +4183,7 @@ count_repr(countobject *lz)
 static PyObject *
 count_reduce(countobject *lz, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     if (lz->cnt == PY_SSIZE_T_MAX)
         return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->long_cnt, lz->long_step);
     return Py_BuildValue("O(n)", Py_TYPE(lz), lz->cnt);
@@ -4258,6 +4307,7 @@ PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(
 static PyObject *
 repeat_reduce(repeatobject *ro, PyObject *Py_UNUSED(ignored))
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     /* unpickle this so that a new repeat iterator is constructed with an
      * object, then call __setstate__ on it to set cnt
      */
@@ -4478,7 +4528,7 @@ zip_longest_next(ziplongestobject *lz)
 static PyObject *
 zip_longest_reduce(ziplongestobject *lz, PyObject *Py_UNUSED(ignored))
 {
-
+    ITERTOOL_PICKLE_DEPRECATION;
     /* Create a new tuple with empty sequences where appropriate to pickle.
      * Then use setstate to set the fillvalue
      */
@@ -4505,6 +4555,7 @@ zip_longest_reduce(ziplongestobject *lz, PyObject *Py_UNUSED(ignored))
 static PyObject *
 zip_longest_setstate(ziplongestobject *lz, PyObject *state)
 {
+    ITERTOOL_PICKLE_DEPRECATION;
     Py_INCREF(state);
     Py_XSETREF(lz->fillvalue, state);
     Py_RETURN_NONE;
diff --git a/Modules/main.c b/Modules/main.c
index 7edfeb3365b4c6..df2ce550245088 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -7,6 +7,7 @@
 #include "pycore_pathconfig.h"    // _PyPathConfig_ComputeSysPath0()
 #include "pycore_pylifecycle.h"   // _Py_PreInitializeFromPyArgv()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_pythonrun.h"     // _PyRun_AnyFileObject()
 
 /* Includes for exit_sigint() */
 #include <stdio.h>                // perror()
@@ -25,10 +26,6 @@
     "Type \"help\", \"copyright\", \"credits\" or \"license\" " \
     "for more information."
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* --- pymain_init() ---------------------------------------------- */
 
 static PyStatus
@@ -252,7 +249,7 @@ pymain_run_command(wchar_t *command)
 
     PyCompilerFlags cf = _PyCompilerFlags_INIT;
     cf.cf_flags |= PyCF_IGNORE_COOKIE;
-    ret = PyRun_SimpleStringFlags(PyBytes_AsString(bytes), &cf);
+    ret = _PyRun_SimpleStringFlagsWithName(PyBytes_AsString(bytes), "<string>", &cf);
     Py_DECREF(bytes);
     return (ret != 0);
 
@@ -559,6 +556,11 @@ pymain_run_python(int *exitcode)
         goto error;
     }
 
+    // XXX Calculate config->sys_path_0 in getpath.py.
+    // The tricky part is that we can't check the path importers yet
+    // at that point.
+    assert(config->sys_path_0 == NULL);
+
     if (config->run_filename != NULL) {
         /* If filename is a package (ex: directory or ZIP file) which contains
            __main__.py, main_importer_path is set to filename and will be
@@ -574,29 +576,45 @@ pymain_run_python(int *exitcode)
     // import readline and rlcompleter before script dir is added to sys.path
     pymain_import_readline(config);
 
+    PyObject *path0 = NULL;
     if (main_importer_path != NULL) {
-        if (pymain_sys_path_add_path0(interp, main_importer_path) < 0) {
-            goto error;
-        }
+        path0 = Py_NewRef(main_importer_path);
     }
     else if (!config->safe_path) {
-        PyObject *path0 = NULL;
         int res = _PyPathConfig_ComputeSysPath0(&config->argv, &path0);
         if (res < 0) {
             goto error;
         }
-
-        if (res > 0) {
-            if (pymain_sys_path_add_path0(interp, path0) < 0) {
-                Py_DECREF(path0);
-                goto error;
-            }
+        else if (res == 0) {
+            Py_CLEAR(path0);
+        }
+    }
+    // XXX Apply config->sys_path_0 in init_interp_main().  We have
+    // to be sure to get readline/rlcompleter imported at the correct time.
+    if (path0 != NULL) {
+        wchar_t *wstr = PyUnicode_AsWideCharString(path0, NULL);
+        if (wstr == NULL) {
+            Py_DECREF(path0);
+            goto error;
+        }
+        config->sys_path_0 = _PyMem_RawWcsdup(wstr);
+        PyMem_Free(wstr);
+        if (config->sys_path_0 == NULL) {
             Py_DECREF(path0);
+            goto error;
+        }
+        int res = pymain_sys_path_add_path0(interp, path0);
+        Py_DECREF(path0);
+        if (res < 0) {
+            goto error;
         }
     }
 
     pymain_header(config);
 
+    _PyInterpreterState_SetRunningMain(interp);
+    assert(!PyErr_Occurred());
+
     if (config->run_command) {
         *exitcode = pymain_run_command(config->run_command);
     }
@@ -620,6 +638,7 @@ pymain_run_python(int *exitcode)
     *exitcode = pymain_exit_err_print();
 
 done:
+    _PyInterpreterState_SetNotRunningMain(interp);
     Py_XDECREF(main_importer_path);
 }
 
@@ -636,7 +655,6 @@ pymain_free(void)
        remain valid after Py_Finalize(), since
        Py_Initialize()-Py_Finalize() can be called multiple times. */
     _PyPathConfig_ClearGlobal();
-    _Py_ClearStandardStreamEncoding();
     _Py_ClearArgcArgv();
     _PyRuntime_Finalize();
 }
@@ -742,7 +760,3 @@ Py_BytesMain(int argc, char **argv)
         .wchar_argv = NULL};
     return pymain_main(&args);
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index f369b2c45ce3ba..6cd61e9ab75424 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -57,6 +57,7 @@ raised for division by zero and mod by zero.
 #endif
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_bitutils.h"      // _Py_bit_length()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_long.h"          // _PyLong_GetZero()
@@ -1124,8 +1125,12 @@ static PyObject *
 math_ceil(PyObject *module, PyObject *number)
 /*[clinic end generated code: output=6c3b8a78bc201c67 input=2725352806399cab]*/
 {
+    double x;
 
-    if (!PyFloat_CheckExact(number)) {
+    if (PyFloat_CheckExact(number)) {
+        x = PyFloat_AS_DOUBLE(number);
+    }
+    else {
         math_module_state *state = get_math_module_state(module);
         PyObject *method = _PyObject_LookupSpecial(number, state->str___ceil__);
         if (method != NULL) {
@@ -1135,11 +1140,10 @@ math_ceil(PyObject *module, PyObject *number)
         }
         if (PyErr_Occurred())
             return NULL;
+        x = PyFloat_AsDouble(number);
+        if (x == -1.0 && PyErr_Occurred())
+            return NULL;
     }
-    double x = PyFloat_AsDouble(number);
-    if (x == -1.0 && PyErr_Occurred())
-        return NULL;
-
     return PyLong_FromDouble(ceil(x));
 }
 
@@ -1195,8 +1199,7 @@ math_floor(PyObject *module, PyObject *number)
     if (PyFloat_CheckExact(number)) {
         x = PyFloat_AS_DOUBLE(number);
     }
-    else
-    {
+    else {
         math_module_state *state = get_math_module_state(module);
         PyObject *method = _PyObject_LookupSpecial(number, state->str___floor__);
         if (method != NULL) {
@@ -2067,7 +2070,7 @@ math_trunc(PyObject *module, PyObject *x)
         return PyFloat_Type.tp_as_number->nb_int(x);
     }
 
-    if (_PyType_IsReady(Py_TYPE(x))) {
+    if (!_PyType_IsReady(Py_TYPE(x))) {
         if (PyType_Ready(Py_TYPE(x)) < 0)
             return NULL;
     }
@@ -2194,12 +2197,10 @@ math_modf_impl(PyObject *module, double x)
     double y;
     /* some platforms don't do the right thing for NaNs and
        infinities, so we take care of special cases directly. */
-    if (!Py_IS_FINITE(x)) {
-        if (Py_IS_INFINITY(x))
-            return Py_BuildValue("(dd)", copysign(0., x), x);
-        else if (Py_IS_NAN(x))
-            return Py_BuildValue("(dd)", x, x);
-    }
+    if (Py_IS_INFINITY(x))
+        return Py_BuildValue("(dd)", copysign(0., x), x);
+    else if (Py_IS_NAN(x))
+        return Py_BuildValue("(dd)", x, x);
 
     errno = 0;
     x = modf(x, &y);
@@ -2831,7 +2832,7 @@ math_sumprod_impl(PyObject *module, PyObject *p, PyObject *q)
                         PyErr_Clear();
                         goto finalize_flt_path;
                     }
-                } else if (q_type_float && (PyLong_CheckExact(p_i) || PyBool_Check(q_i))) {
+                } else if (q_type_float && (PyLong_CheckExact(p_i) || PyBool_Check(p_i))) {
                     flt_q = PyFloat_AS_DOUBLE(q_i);
                     flt_p = PyLong_AsDouble(p_i);
                     if (flt_p == -1.0 && PyErr_Occurred()) {
@@ -2949,7 +2950,8 @@ math_pow_impl(PyObject *module, double x, double y)
             else /* y < 0. */
                 r = odd_y ? copysign(0., x) : 0.;
         }
-        else if (Py_IS_INFINITY(y)) {
+        else {
+            assert(Py_IS_INFINITY(y));
             if (fabs(x) == 1.0)
                 r = 1.;
             else if (y > 0. && fabs(x) > 1.0)
@@ -3479,9 +3481,7 @@ static const uint8_t factorial_trailing_zeros[] = {
 static PyObject *
 perm_comb_small(unsigned long long n, unsigned long long k, int iscomb)
 {
-    if (k == 0) {
-        return PyLong_FromLong(1);
-    }
+    assert(k != 0);
 
     /* For small enough n and k the result fits in the 64-bit range and can
      * be calculated without allocating intermediate PyLong objects. */
@@ -3864,13 +3864,20 @@ math.nextafter
     x: double
     y: double
     /
+    *
+    steps: object = None
 
-Return the next floating-point value after x towards y.
+Return the floating-point value the given number of steps after x towards y.
+
+If steps is not specified or is None, it defaults to 1.
+
+Raises a TypeError, if x or y is not a double, or if steps is not an integer.
+Raises ValueError if steps is negative.
 [clinic start generated code]*/
 
 static PyObject *
-math_nextafter_impl(PyObject *module, double x, double y)
-/*[clinic end generated code: output=750c8266c1c540ce input=02b2d50cd1d9f9b6]*/
+math_nextafter_impl(PyObject *module, double x, double y, PyObject *steps)
+/*[clinic end generated code: output=cc6511f02afc099e input=7f2a5842112af2b4]*/
 {
 #if defined(_AIX)
     if (x == y) {
@@ -3885,7 +3892,101 @@ math_nextafter_impl(PyObject *module, double x, double y)
         return PyFloat_FromDouble(y);
     }
 #endif
-    return PyFloat_FromDouble(nextafter(x, y));
+    if (steps == Py_None) {
+        // fast path: we default to one step.
+        return PyFloat_FromDouble(nextafter(x, y));
+    }
+    steps = PyNumber_Index(steps);
+    if (steps == NULL) {
+        return NULL;
+    }
+    assert(PyLong_CheckExact(steps));
+    if (_PyLong_IsNegative((PyLongObject *)steps)) {
+        PyErr_SetString(PyExc_ValueError,
+                        "steps must be a non-negative integer");
+        Py_DECREF(steps);
+        return NULL;
+    }
+
+    unsigned long long usteps_ull = PyLong_AsUnsignedLongLong(steps);
+    // Conveniently, uint64_t and double have the same number of bits
+    // on all the platforms we care about.
+    // So if an overflow occurs, we can just use UINT64_MAX.
+    Py_DECREF(steps);
+    if (usteps_ull >= UINT64_MAX) {
+        // This branch includes the case where an error occurred, since
+        // (unsigned long long)(-1) = ULLONG_MAX >= UINT64_MAX. Note that
+        // usteps_ull can be strictly larger than UINT64_MAX on a machine
+        // where unsigned long long has width > 64 bits.
+        if (PyErr_Occurred()) {
+            if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
+                PyErr_Clear();
+            }
+            else {
+                return NULL;
+            }
+        }
+        usteps_ull = UINT64_MAX;
+    }
+    assert(usteps_ull <= UINT64_MAX);
+    uint64_t usteps = (uint64_t)usteps_ull;
+
+    if (usteps == 0) {
+        return PyFloat_FromDouble(x);
+    }
+    if (Py_IS_NAN(x)) {
+        return PyFloat_FromDouble(x);
+    }
+    if (Py_IS_NAN(y)) {
+        return PyFloat_FromDouble(y);
+    }
+
+    // We assume that double and uint64_t have the same endianness.
+    // This is not guaranteed by the C-standard, but it is true for
+    // all platforms we care about. (The most likely form of violation
+    // would be a "mixed-endian" double.)
+    union pun {double f; uint64_t i;};
+    union pun ux = {x}, uy = {y};
+    if (ux.i == uy.i) {
+        return PyFloat_FromDouble(x);
+    }
+
+    const uint64_t sign_bit = 1ULL<<63;
+
+    uint64_t ax = ux.i & ~sign_bit;
+    uint64_t ay = uy.i & ~sign_bit;
+
+    // opposite signs
+    if (((ux.i ^ uy.i) & sign_bit)) {
+        // NOTE: ax + ay can never overflow, because their most significant bit
+        // ain't set.
+        if (ax + ay <= usteps) {
+            return PyFloat_FromDouble(uy.f);
+        // This comparison has to use <, because <= would get +0.0 vs -0.0
+        // wrong.
+        } else if (ax < usteps) {
+            union pun result = {.i = (uy.i & sign_bit) | (usteps - ax)};
+            return PyFloat_FromDouble(result.f);
+        } else {
+            ux.i -= usteps;
+            return PyFloat_FromDouble(ux.f);
+        }
+    // same sign
+    } else if (ax > ay) {
+        if (ax - ay >= usteps) {
+            ux.i -= usteps;
+            return PyFloat_FromDouble(ux.f);
+        } else {
+            return PyFloat_FromDouble(uy.f);
+        }
+    } else {
+        if (ay - ax >= usteps) {
+            ux.i += usteps;
+            return PyFloat_FromDouble(ux.f);
+        } else {
+            return PyFloat_FromDouble(uy.f);
+        }
+    }
 }
 
 
@@ -3936,20 +4037,20 @@ math_exec(PyObject *module)
     if (state->str___trunc__ == NULL) {
         return -1;
     }
-    if (PyModule_AddObject(module, "pi", PyFloat_FromDouble(Py_MATH_PI)) < 0) {
+    if (PyModule_Add(module, "pi", PyFloat_FromDouble(Py_MATH_PI)) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(module, "e", PyFloat_FromDouble(Py_MATH_E)) < 0) {
+    if (PyModule_Add(module, "e", PyFloat_FromDouble(Py_MATH_E)) < 0) {
         return -1;
     }
     // 2pi
-    if (PyModule_AddObject(module, "tau", PyFloat_FromDouble(Py_MATH_TAU)) < 0) {
+    if (PyModule_Add(module, "tau", PyFloat_FromDouble(Py_MATH_TAU)) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(module, "inf", PyFloat_FromDouble(Py_INFINITY)) < 0) {
+    if (PyModule_Add(module, "inf", PyFloat_FromDouble(Py_INFINITY)) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(module, "nan", PyFloat_FromDouble(fabs(Py_NAN))) < 0) {
+    if (PyModule_Add(module, "nan", PyFloat_FromDouble(fabs(Py_NAN))) < 0) {
         return -1;
     }
     return 0;
diff --git a/Modules/md5module.c b/Modules/md5module.c
index 86605771d9643f..7d2b3275f213fd 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -15,14 +15,13 @@
 */
 
 /* MD5 objects */
+
 #ifndef Py_BUILD_CORE_BUILTIN
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
 #include "Python.h"
 #include "hashlib.h"
-#include "pycore_strhex.h"        // _Py_strhex()
-#include "pycore_typeobject.h"    // _PyType_GetModuleState()
 
 /*[clinic input]
 module _md5
@@ -49,7 +48,9 @@ typedef long long MD5_INT64; /* 64-bit integer */
 
 typedef struct {
     PyObject_HEAD
-
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;
     Hacl_Streaming_MD5_state *hash_state;
 } MD5object;
 
@@ -72,6 +73,11 @@ static MD5object *
 newMD5object(MD5State * st)
 {
     MD5object *md5 = (MD5object *)PyObject_GC_New(MD5object, st->md5_type);
+    if (!md5) {
+        return NULL;
+    }
+    HASHLIB_INIT_MUTEX(md5);
+
     PyObject_GC_Track(md5);
     return md5;
 }
@@ -88,7 +94,7 @@ static void
 MD5_dealloc(MD5object *ptr)
 {
     Hacl_Streaming_MD5_legacy_free(ptr->hash_state);
-    PyTypeObject *tp = Py_TYPE(ptr);
+    PyTypeObject *tp = Py_TYPE((PyObject*)ptr);
     PyObject_GC_UnTrack(ptr);
     PyObject_GC_Del(ptr);
     Py_DECREF(tp);
@@ -109,13 +115,15 @@ static PyObject *
 MD5Type_copy_impl(MD5object *self, PyTypeObject *cls)
 /*[clinic end generated code: output=bf055e08244bf5ee input=d89087dcfb2a8620]*/
 {
-    MD5State *st = _PyType_GetModuleState(cls);
+    MD5State *st = PyType_GetModuleState(cls);
 
     MD5object *newobj;
     if ((newobj = newMD5object(st))==NULL)
         return NULL;
 
+    ENTER_HASHLIB(self);
     newobj->hash_state = Hacl_Streaming_MD5_legacy_copy(self->hash_state);
+    LEAVE_HASHLIB(self);
     return (PyObject *)newobj;
 }
 
@@ -130,7 +138,9 @@ MD5Type_digest_impl(MD5object *self)
 /*[clinic end generated code: output=eb691dc4190a07ec input=bc0c4397c2994be6]*/
 {
     unsigned char digest[MD5_DIGESTSIZE];
+    ENTER_HASHLIB(self);
     Hacl_Streaming_MD5_legacy_finish(self->hash_state, digest);
+    LEAVE_HASHLIB(self);
     return PyBytes_FromStringAndSize((const char *)digest, MD5_DIGESTSIZE);
 }
 
@@ -145,8 +155,19 @@ MD5Type_hexdigest_impl(MD5object *self)
 /*[clinic end generated code: output=17badced1f3ac932 input=b60b19de644798dd]*/
 {
     unsigned char digest[MD5_DIGESTSIZE];
+    ENTER_HASHLIB(self);
     Hacl_Streaming_MD5_legacy_finish(self->hash_state, digest);
-    return _Py_strhex((const char*)digest, MD5_DIGESTSIZE);
+    LEAVE_HASHLIB(self);
+
+    const char *hexdigits = "0123456789abcdef";
+    char digest_hex[MD5_DIGESTSIZE * 2];
+    char *str = digest_hex;
+    for (size_t i=0; i < MD5_DIGESTSIZE; i++) {
+        unsigned char byte = digest[i];
+        *str++ = hexdigits[byte >> 4];
+        *str++ = hexdigits[byte & 0x0f];
+    }
+    return PyUnicode_FromStringAndSize(digest_hex, sizeof(digest_hex));
 }
 
 static void update(Hacl_Streaming_MD5_state *state, uint8_t *buf, Py_ssize_t len) {
@@ -177,7 +198,18 @@ MD5Type_update(MD5object *self, PyObject *obj)
 
     GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
 
-    update(self->hash_state, buf.buf, buf.len);
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        update(self->hash_state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
+    } else {
+        update(self->hash_state, buf.buf, buf.len);
+    }
 
     PyBuffer_Release(&buf);
     Py_RETURN_NONE;
@@ -279,7 +311,15 @@ _md5_md5_impl(PyObject *module, PyObject *string, int usedforsecurity)
         return NULL;
     }
     if (string) {
-        update(new->hash_state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            update(new->hash_state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            update(new->hash_state, buf.buf, buf.len);
+        }
         PyBuffer_Release(&buf);
     }
 
@@ -325,13 +365,7 @@ md5_exec(PyObject *m)
     st->md5_type = (PyTypeObject *)PyType_FromModuleAndSpec(
         m, &md5_type_spec, NULL);
 
-    if (st->md5_type == NULL) {
-        return -1;
-    }
-
-    Py_INCREF((PyObject *)st->md5_type);
-    if (PyModule_AddObject(m, "MD5Type", (PyObject *)st->md5_type) < 0) {
-         Py_DECREF(st->md5_type);
+    if (PyModule_AddObjectRef(m, "MD5Type", (PyObject *)st->md5_type) < 0) {
         return -1;
     }
 
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index a470dd3c2f3bba..66ed0b8efb775c 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -22,12 +22,15 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
 #include <Python.h>
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
 #include "pycore_bytesobject.h"   // _PyBytes_Find()
 #include "pycore_fileutils.h"     // _Py_stat_struct
-#include "structmember.h"         // PyMemberDef
+
 #include <stddef.h>               // offsetof()
+#ifndef MS_WINDOWS
+#  include <unistd.h>             // close()
+#endif
 
 // to support MS_WINDOWS_SYSTEM OpenFileMappingA / CreateFileMappingA
 // need to be replaced with OpenFileMappingW / CreateFileMappingW
@@ -168,7 +171,7 @@ mmap_object_dealloc(mmap_object *m_obj)
 }
 
 static PyObject *
-mmap_close_method(mmap_object *self, PyObject *unused)
+mmap_close_method(mmap_object *self, PyObject *Py_UNUSED(ignored))
 {
     if (self->exports > 0) {
         PyErr_SetString(PyExc_BufferError, "cannot close "\
@@ -227,6 +230,14 @@ do {                                                                    \
     return err;                                                         \
     }                                                                   \
 } while (0)
+#define CHECK_VALID_OR_RELEASE(err, buffer)                             \
+do {                                                                    \
+    if (self->map_handle == NULL) {                                     \
+    PyErr_SetString(PyExc_ValueError, "mmap closed or invalid");        \
+    PyBuffer_Release(&(buffer));                                        \
+    return (err);                                                       \
+    }                                                                   \
+} while (0)
 #endif /* MS_WINDOWS */
 
 #ifdef UNIX
@@ -237,11 +248,19 @@ do {                                                                    \
     return err;                                                         \
     }                                                                   \
 } while (0)
+#define CHECK_VALID_OR_RELEASE(err, buffer)                             \
+do {                                                                    \
+    if (self->data == NULL) {                                           \
+    PyErr_SetString(PyExc_ValueError, "mmap closed or invalid");        \
+    PyBuffer_Release(&(buffer));                                        \
+    return (err);                                                       \
+    }                                                                   \
+} while (0)
 #endif /* UNIX */
 
 static PyObject *
 mmap_read_byte_method(mmap_object *self,
-                      PyObject *unused)
+                      PyObject *Py_UNUSED(ignored))
 {
     CHECK_VALID(NULL);
     if (self->pos >= self->size) {
@@ -253,7 +272,7 @@ mmap_read_byte_method(mmap_object *self,
 
 static PyObject *
 mmap_read_line_method(mmap_object *self,
-                      PyObject *unused)
+                      PyObject *Py_UNUSED(ignored))
 {
     Py_ssize_t remaining;
     char *start, *eol;
@@ -284,7 +303,8 @@ mmap_read_method(mmap_object *self,
 
     CHECK_VALID(NULL);
     if (!PyArg_ParseTuple(args, "|O&:read", _Py_convert_optional_to_ssize_t, &num_bytes))
-        return(NULL);
+        return NULL;
+    CHECK_VALID(NULL);
 
     /* silently 'adjust' out-of-range requests */
     remaining = (self->pos < self->size) ? self->size - self->pos : 0;
@@ -325,12 +345,18 @@ mmap_gfind(mmap_object *self,
             end = self->size;
 
         Py_ssize_t res;
-        if (reverse) {
+        CHECK_VALID_OR_RELEASE(NULL, view);
+        if (end < start) {
+            res = -1;
+        }
+        else if (reverse) {
+            assert(0 <= start && start <= end && end <= self->size);
             res = _PyBytes_ReverseFind(
                 self->data + start, end - start,
                 view.buf, view.len, start);
         }
         else {
+            assert(0 <= start && start <= end && end <= self->size);
             res = _PyBytes_Find(
                 self->data + start, end - start,
                 view.buf, view.len, start);
@@ -388,7 +414,7 @@ mmap_write_method(mmap_object *self,
 
     CHECK_VALID(NULL);
     if (!PyArg_ParseTuple(args, "y*:write", &data))
-        return(NULL);
+        return NULL;
 
     if (!is_writable(self)) {
         PyBuffer_Release(&data);
@@ -401,6 +427,7 @@ mmap_write_method(mmap_object *self,
         return NULL;
     }
 
+    CHECK_VALID_OR_RELEASE(NULL, data);
     memcpy(&self->data[self->pos], data.buf, data.len);
     self->pos += data.len;
     PyBuffer_Release(&data);
@@ -420,6 +447,7 @@ mmap_write_byte_method(mmap_object *self,
     if (!is_writable(self))
         return NULL;
 
+    CHECK_VALID(NULL);
     if (self->pos < self->size) {
         self->data[self->pos++] = value;
         Py_RETURN_NONE;
@@ -432,7 +460,7 @@ mmap_write_byte_method(mmap_object *self,
 
 static PyObject *
 mmap_size_method(mmap_object *self,
-                 PyObject *unused)
+                 PyObject *Py_UNUSED(ignored))
 {
     CHECK_VALID(NULL);
 
@@ -629,7 +657,7 @@ mmap_resize_method(mmap_object *self,
 }
 
 static PyObject *
-mmap_tell_method(mmap_object *self, PyObject *unused)
+mmap_tell_method(mmap_object *self, PyObject *Py_UNUSED(ignored))
 {
     CHECK_VALID(NULL);
     return PyLong_FromSize_t(self->pos);
@@ -701,7 +729,7 @@ mmap_seek_method(mmap_object *self, PyObject *args)
         if (where > self->size || where < 0)
             goto onoutofrange;
         self->pos = where;
-        Py_RETURN_NONE;
+        return PyLong_FromSsize_t(self->pos);
     }
 
   onoutofrange:
@@ -709,6 +737,12 @@ mmap_seek_method(mmap_object *self, PyObject *args)
     return NULL;
 }
 
+static PyObject *
+mmap_seekable_method(mmap_object *self, PyObject *Py_UNUSED(ignored))
+{
+    Py_RETURN_TRUE;
+}
+
 static PyObject *
 mmap_move_method(mmap_object *self, PyObject *args)
 {
@@ -724,6 +758,7 @@ mmap_move_method(mmap_object *self, PyObject *args)
         if (self->size - dest < cnt || self->size - src < cnt)
             goto bounds;
 
+        CHECK_VALID(NULL);
         memmove(&self->data[dest], &self->data[src], cnt);
 
         Py_RETURN_NONE;
@@ -806,7 +841,7 @@ mmap__repr__method(PyObject *self)
 
 #ifdef MS_WINDOWS
 static PyObject *
-mmap__sizeof__method(mmap_object *self, void *unused)
+mmap__sizeof__method(mmap_object *self, void *Py_UNUSED(ignored))
 {
     size_t res = _PyObject_SIZE(Py_TYPE(self));
     if (self->tagname) {
@@ -847,6 +882,7 @@ mmap_madvise_method(mmap_object *self, PyObject *args)
         length = self->size - start;
     }
 
+    CHECK_VALID(NULL);
     if (madvise(self->data + start, length, option) != 0) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
@@ -857,7 +893,7 @@ mmap_madvise_method(mmap_object *self, PyObject *args)
 #endif // HAVE_MADVISE
 
 static struct PyMemberDef mmap_object_members[] = {
-    {"__weaklistoffset__", T_PYSSIZET, offsetof(mmap_object, weakreflist), READONLY},
+    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(mmap_object, weakreflist), Py_READONLY},
     {NULL},
 };
 
@@ -875,6 +911,7 @@ static struct PyMethodDef mmap_object_methods[] = {
     {"readline",        (PyCFunction) mmap_read_line_method,    METH_NOARGS},
     {"resize",          (PyCFunction) mmap_resize_method,       METH_VARARGS},
     {"seek",            (PyCFunction) mmap_seek_method,         METH_VARARGS},
+    {"seekable",        (PyCFunction) mmap_seekable_method,     METH_NOARGS},
     {"size",            (PyCFunction) mmap_size_method,         METH_NOARGS},
     {"tell",            (PyCFunction) mmap_tell_method,         METH_NOARGS},
     {"write",           (PyCFunction) mmap_write_method,        METH_VARARGS},
@@ -945,6 +982,7 @@ mmap_subscript(mmap_object *self, PyObject *item)
                 "mmap index out of range");
             return NULL;
         }
+        CHECK_VALID(NULL);
         return PyLong_FromLong(Py_CHARMASK(self->data[i]));
     }
     else if (PySlice_Check(item)) {
@@ -955,6 +993,7 @@ mmap_subscript(mmap_object *self, PyObject *item)
         }
         slicelen = PySlice_AdjustIndices(self->size, &start, &stop, step);
 
+        CHECK_VALID(NULL);
         if (slicelen <= 0)
             return PyBytes_FromStringAndSize("", 0);
         else if (step == 1)
@@ -968,6 +1007,7 @@ mmap_subscript(mmap_object *self, PyObject *item)
 
             if (result_buf == NULL)
                 return PyErr_NoMemory();
+
             for (cur = start, i = 0; i < slicelen;
                  cur += step, i++) {
                 result_buf[i] = self->data[cur];
@@ -1052,6 +1092,7 @@ mmap_ass_subscript(mmap_object *self, PyObject *item, PyObject *value)
                             "in range(0, 256)");
             return -1;
         }
+        CHECK_VALID(-1);
         self->data[i] = (char) v;
         return 0;
     }
@@ -1077,6 +1118,7 @@ mmap_ass_subscript(mmap_object *self, PyObject *item, PyObject *value)
             return -1;
         }
 
+        CHECK_VALID_OR_RELEASE(-1, vbuf);
         if (slicelen == 0) {
         }
         else if (step == 1) {
@@ -1324,6 +1366,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
     m_obj->data = mmap(NULL, map_size, prot, flags, fd, offset);
     Py_END_ALLOW_THREADS
 
+    int saved_errno = errno;
     if (devzero != -1) {
         close(devzero);
     }
@@ -1331,6 +1374,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
     if (m_obj->data == (char *)-1) {
         m_obj->data = NULL;
         Py_DECREF(m_obj);
+        errno = saved_errno;
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
     }
@@ -1548,9 +1592,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
 static int
 mmap_exec(PyObject *module)
 {
-    Py_INCREF(PyExc_OSError);
-    if (PyModule_AddObject(module, "error", PyExc_OSError) < 0) {
-        Py_DECREF(PyExc_OSError);
+    if (PyModule_AddObjectRef(module, "error", PyExc_OSError) < 0) {
         return -1;
     }
 
diff --git a/Modules/nismodule.c b/Modules/nismodule.c
deleted file mode 100644
index 6d094490cea731..00000000000000
--- a/Modules/nismodule.c
+++ /dev/null
@@ -1,536 +0,0 @@
-/***********************************************************
-    Written by:
-    Fred Gansevles <Fred.Gansevles@cs.utwente.nl>
-    B&O group,
-    Faculteit der Informatica,
-    Universiteit Twente,
-    Enschede,
-    the Netherlands.
-******************************************************************/
-
-/* NIS module implementation */
-
-#include "Python.h"
-
-#include <stdlib.h>               // free()
-#include <sys/time.h>
-#include <sys/types.h>
-#include <rpc/rpc.h>
-#include <rpcsvc/yp_prot.h>
-#include <rpcsvc/ypclnt.h>
-
-#ifdef __sgi
-/* This is missing from rpcsvc/ypclnt.h */
-extern int yp_get_default_domain(char **);
-#endif
-
-PyDoc_STRVAR(get_default_domain__doc__,
-"get_default_domain() -> str\n\
-Corresponds to the C library yp_get_default_domain() call, returning\n\
-the default NIS domain.\n");
-
-PyDoc_STRVAR(match__doc__,
-"match(key, map, domain = defaultdomain)\n\
-Corresponds to the C library yp_match() call, returning the value of\n\
-key in the given map. Optionally domain can be specified but it\n\
-defaults to the system default domain.\n");
-
-PyDoc_STRVAR(cat__doc__,
-"cat(map, domain = defaultdomain)\n\
-Returns the entire map as a dictionary. Optionally domain can be\n\
-specified but it defaults to the system default domain.\n");
-
-PyDoc_STRVAR(maps__doc__,
-"maps(domain = defaultdomain)\n\
-Returns an array of all available NIS maps within a domain. If domain\n\
-is not specified it defaults to the system default domain.\n");
-
-typedef struct {
-    PyObject *nis_error;
-} nis_state;
-
-static inline nis_state*
-get_nis_state(PyObject *module)
-{
-    void *state = PyModule_GetState(module);
-    assert(state != NULL);
-    return (nis_state *)state;
-}
-
-static int
-nis_clear(PyObject *m)
-{
-    Py_CLEAR(get_nis_state(m)->nis_error);
-    return 0;
-}
-
-static int
-nis_traverse(PyObject *m, visitproc visit, void *arg)
-{
-    Py_VISIT(get_nis_state(m)->nis_error);
-    return 0;
-}
-
-static void
-nis_free(void *m)
-{
-    nis_clear((PyObject *) m);
-}
-
-static PyObject *
-nis_error(nis_state *state, int err)
-{
-    PyErr_SetString(state->nis_error, yperr_string(err));
-    return NULL;
-}
-
-static struct nis_map {
-    char *alias;
-    char *map;
-    int  fix;
-} aliases [] = {
-    {"passwd",          "passwd.byname",        0},
-    {"group",           "group.byname",         0},
-    {"networks",        "networks.byaddr",      0},
-    {"hosts",           "hosts.byname",         0},
-    {"protocols",       "protocols.bynumber",   0},
-    {"services",        "services.byname",      0},
-    {"aliases",         "mail.aliases",         1}, /* created with 'makedbm -a' */
-    {"ethers",          "ethers.byname",        0},
-    {0L,                0L,                     0}
-};
-
-static char *
-nis_mapname(char *map, int *pfix)
-{
-    int i;
-
-    *pfix = 0;
-    for (i=0; aliases[i].alias != 0L; i++) {
-        if (!strcmp (aliases[i].alias, map) || !strcmp (aliases[i].map, map)) {
-            *pfix = aliases[i].fix;
-            return aliases[i].map;
-        }
-    }
-
-    return map;
-}
-
-#if defined(__APPLE__) || defined(__OpenBSD__) || defined(__FreeBSD__)
-typedef int (*foreachfunc)(unsigned long, char *, int, char *, int, void *);
-#else
-typedef int (*foreachfunc)(int, char *, int, char *, int, char *);
-#endif
-
-struct ypcallback_data {
-    PyObject            *dict;
-    int                         fix;
-    PyThreadState *state;
-};
-
-static int
-nis_foreach(int instatus, char *inkey, int inkeylen, char *inval,
-             int invallen, struct ypcallback_data *indata)
-{
-    if (instatus == YP_TRUE) {
-        PyObject *key;
-        PyObject *val;
-        int err;
-
-        PyEval_RestoreThread(indata->state);
-        if (indata->fix) {
-            if (inkeylen > 0 && inkey[inkeylen-1] == '\0')
-            inkeylen--;
-            if (invallen > 0 && inval[invallen-1] == '\0')
-            invallen--;
-        }
-        key = PyUnicode_DecodeFSDefaultAndSize(inkey, inkeylen);
-        val = PyUnicode_DecodeFSDefaultAndSize(inval, invallen);
-        if (key == NULL || val == NULL) {
-            /* XXX error -- don't know how to handle */
-            PyErr_Clear();
-            Py_XDECREF(key);
-            Py_XDECREF(val);
-            indata->state = PyEval_SaveThread();
-            return 1;
-        }
-        err = PyDict_SetItem(indata->dict, key, val);
-        Py_DECREF(key);
-        Py_DECREF(val);
-        if (err != 0)
-            PyErr_Clear();
-        indata->state = PyEval_SaveThread();
-        if (err != 0)
-            return 1;
-        return 0;
-    }
-    return 1;
-}
-
-static PyObject *
-nis_get_default_domain(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    char *domain;
-    int err;
-    PyObject *res;
-    nis_state *state = get_nis_state(module);
-    if ((err = yp_get_default_domain(&domain)) != 0) {
-        return nis_error(state, err);
-    }
-
-    res = PyUnicode_FromStringAndSize (domain, strlen(domain));
-    return res;
-}
-
-static PyObject *
-nis_match(PyObject *module, PyObject *args, PyObject *kwdict)
-{
-    char *match;
-    char *domain = NULL;
-    Py_ssize_t keylen;
-    int len;
-    char *key, *map;
-    int err;
-    PyObject *ukey, *bkey, *res;
-    int fix;
-    static char *kwlist[] = {"key", "map", "domain", NULL};
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwdict,
-                                     "Us|s:match", kwlist,
-                                     &ukey, &map, &domain)) {
-        return NULL;
-    }
-    if ((bkey = PyUnicode_EncodeFSDefault(ukey)) == NULL) {
-        return NULL;
-    }
-    /* check for embedded null bytes */
-    if (PyBytes_AsStringAndSize(bkey, &key, &keylen) == -1) {
-        Py_DECREF(bkey);
-        return NULL;
-    }
-
-    nis_state *state = get_nis_state(module);
-    if (!domain && ((err = yp_get_default_domain(&domain)) != 0)) {
-        Py_DECREF(bkey);
-        return nis_error(state, err);
-    }
-    map = nis_mapname (map, &fix);
-    if (fix)
-        keylen++;
-    Py_BEGIN_ALLOW_THREADS
-    err = yp_match (domain, map, key, keylen, &match, &len);
-    Py_END_ALLOW_THREADS
-    Py_DECREF(bkey);
-    if (fix)
-        len--;
-    if (err != 0) {
-        return nis_error(state, err);
-    }
-    res = PyUnicode_DecodeFSDefaultAndSize(match, len);
-    free (match);
-    return res;
-}
-
-static PyObject *
-nis_cat(PyObject *module, PyObject *args, PyObject *kwdict)
-{
-    char *domain = NULL;
-    char *map;
-    struct ypall_callback cb;
-    struct ypcallback_data data;
-    PyObject *dict;
-    int err;
-    static char *kwlist[] = {"map", "domain", NULL};
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwdict, "s|s:cat",
-                                     kwlist, &map, &domain)) {
-        return NULL;
-    }
-    nis_state *state = get_nis_state(module);
-    if (!domain && ((err = yp_get_default_domain(&domain)) != 0)) {
-        return nis_error(state, err);
-    }
-    dict = PyDict_New ();
-    if (dict == NULL)
-        return NULL;
-    cb.foreach = (foreachfunc)nis_foreach;
-    data.dict = dict;
-    map = nis_mapname (map, &data.fix);
-    cb.data = (char *)&data;
-    data.state = PyEval_SaveThread();
-    err = yp_all (domain, map, &cb);
-    PyEval_RestoreThread(data.state);
-    if (err != 0) {
-        Py_DECREF(dict);
-        return nis_error(state, err);
-    }
-    return dict;
-}
-
-/* These should be u_long on Sun h/w but not on 64-bit h/w.
-   This is not portable to machines with 16-bit ints and no prototypes */
-#ifndef YPPROC_MAPLIST
-#define YPPROC_MAPLIST  11
-#endif
-#ifndef YPPROG
-#define YPPROG          100004
-#endif
-#ifndef YPVERS
-#define YPVERS          2
-#endif
-
-typedef char *domainname;
-typedef char *mapname;
-
-enum nisstat {
-    NIS_TRUE = 1,
-    NIS_NOMORE = 2,
-    NIS_FALSE = 0,
-    NIS_NOMAP = -1,
-    NIS_NODOM = -2,
-    NIS_NOKEY = -3,
-    NIS_BADOP = -4,
-    NIS_BADDB = -5,
-    NIS_YPERR = -6,
-    NIS_BADARGS = -7,
-    NIS_VERS = -8
-};
-typedef enum nisstat nisstat;
-
-struct nismaplist {
-    mapname map;
-    struct nismaplist *next;
-};
-typedef struct nismaplist nismaplist;
-
-struct nisresp_maplist {
-    nisstat stat;
-    nismaplist *maps;
-};
-typedef struct nisresp_maplist nisresp_maplist;
-
-static struct timeval TIMEOUT = { 25, 0 };
-
-static
-bool_t
-nis_xdr_domainname(XDR *xdrs, domainname *objp)
-{
-    if (!xdr_string(xdrs, objp, YPMAXDOMAIN)) {
-        return (FALSE);
-    }
-    return (TRUE);
-}
-
-static
-bool_t
-nis_xdr_mapname(XDR *xdrs, mapname *objp)
-{
-    if (!xdr_string(xdrs, objp, YPMAXMAP)) {
-        return (FALSE);
-    }
-    return (TRUE);
-}
-
-static
-bool_t
-nis_xdr_ypmaplist(XDR *xdrs, nismaplist *objp)
-{
-    if (!nis_xdr_mapname(xdrs, &objp->map)) {
-        return (FALSE);
-    }
-    if (!xdr_pointer(xdrs, (char **)&objp->next,
-                     sizeof(nismaplist), (xdrproc_t)nis_xdr_ypmaplist))
-    {
-        return (FALSE);
-    }
-    return (TRUE);
-}
-
-static
-bool_t
-nis_xdr_ypstat(XDR *xdrs, nisstat *objp)
-{
-    if (!xdr_enum(xdrs, (enum_t *)objp)) {
-        return (FALSE);
-    }
-    return (TRUE);
-}
-
-
-static
-bool_t
-nis_xdr_ypresp_maplist(XDR *xdrs, nisresp_maplist *objp)
-{
-    if (!nis_xdr_ypstat(xdrs, &objp->stat)) {
-        return (FALSE);
-    }
-    if (!xdr_pointer(xdrs, (char **)&objp->maps,
-                     sizeof(nismaplist), (xdrproc_t)nis_xdr_ypmaplist))
-    {
-        return (FALSE);
-    }
-    return (TRUE);
-}
-
-
-static
-nisresp_maplist *
-nisproc_maplist_2(domainname *argp, CLIENT *clnt)
-{
-    static nisresp_maplist res;
-
-    memset(&res, 0, sizeof(res));
-    if (clnt_call(clnt, YPPROC_MAPLIST,
-                  (xdrproc_t)nis_xdr_domainname, (caddr_t)argp,
-                  (xdrproc_t)nis_xdr_ypresp_maplist, (caddr_t)&res,
-                  TIMEOUT) != RPC_SUCCESS)
-    {
-        return (NULL);
-    }
-    return (&res);
-}
-
-static
-nismaplist *
-nis_maplist(nis_state *state, char *dom)
-{
-    nisresp_maplist *list;
-    CLIENT *cl;
-    char *server = NULL;
-    int mapi = 0;
-
-    while (!server && aliases[mapi].map != 0L) {
-        yp_master (dom, aliases[mapi].map, &server);
-        mapi++;
-    }
-    if (!server) {
-        PyErr_SetString(state->nis_error, "No NIS master found for any map");
-        return NULL;
-    }
-    cl = clnt_create(server, YPPROG, YPVERS, "tcp");
-    if (cl == NULL) {
-        PyErr_SetString(state->nis_error, clnt_spcreateerror(server));
-        goto finally;
-    }
-    list = nisproc_maplist_2 (&dom, cl);
-    clnt_destroy(cl);
-    if (list == NULL)
-        goto finally;
-    if (list->stat != NIS_TRUE)
-        goto finally;
-
-    free(server);
-    return list->maps;
-
-  finally:
-    free(server);
-    return NULL;
-}
-
-static PyObject *
-nis_maps (PyObject *module, PyObject *args, PyObject *kwdict)
-{
-    char *domain = NULL;
-    nismaplist *maps;
-    PyObject *list;
-    int err;
-    static char *kwlist[] = {"domain", NULL};
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwdict,
-                                     "|s:maps", kwlist, &domain)) {
-        return NULL;
-    }
-
-    nis_state *state = get_nis_state(module);
-    if (!domain && ((err = yp_get_default_domain (&domain)) != 0)) {
-        nis_error(state, err);
-        return NULL;
-    }
-
-    if ((maps = nis_maplist(state, domain)) == NULL) {
-        return NULL;
-    }
-    if ((list = PyList_New(0)) == NULL) {
-        return NULL;
-    }
-    for (; maps; maps = maps->next) {
-        PyObject *str = PyUnicode_FromString(maps->map);
-        if (!str || PyList_Append(list, str) < 0)
-        {
-            Py_XDECREF(str);
-            Py_SETREF(list, NULL);
-            break;
-        }
-        Py_DECREF(str);
-    }
-    /* XXX Shouldn't we free the list of maps now? */
-    return list;
-}
-
-static PyMethodDef nis_methods[] = {
-    {"match",                   _PyCFunction_CAST(nis_match),
-                                    METH_VARARGS | METH_KEYWORDS,
-                                    match__doc__},
-    {"cat",                     _PyCFunction_CAST(nis_cat),
-                                    METH_VARARGS | METH_KEYWORDS,
-                                    cat__doc__},
-    {"maps",                    _PyCFunction_CAST(nis_maps),
-                                    METH_VARARGS | METH_KEYWORDS,
-                                    maps__doc__},
-    {"get_default_domain",      nis_get_default_domain,
-                                    METH_NOARGS,
-                                    get_default_domain__doc__},
-    {NULL,                      NULL}            /* Sentinel */
-};
-
-static int
-nis_exec(PyObject *module)
-{
-    nis_state* state = get_nis_state(module);
-    state->nis_error = PyErr_NewException("nis.error", NULL, NULL);
-    if (state->nis_error == NULL) {
-        return -1;
-    }
-
-    Py_INCREF(state->nis_error);
-    if (PyModule_AddObject(module, "error", state->nis_error) < 0) {
-        Py_DECREF(state->nis_error);
-        return -1;
-    }
-    return 0;
-}
-
-static PyModuleDef_Slot nis_slots[] = {
-    {Py_mod_exec, nis_exec},
-    // XXX gh-103092: fix isolation.
-    {Py_mod_multiple_interpreters, Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED},
-    //{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
-    {0, NULL}
-};
-
-PyDoc_STRVAR(nis__doc__,
-"This module contains functions for accessing NIS maps.\n");
-
-static struct PyModuleDef nismodule = {
-    PyModuleDef_HEAD_INIT,
-    .m_name = "nis",
-    .m_doc = nis__doc__,
-    .m_size = sizeof(nis_state),
-    .m_methods = nis_methods,
-    .m_traverse = nis_traverse,
-    .m_clear = nis_clear,
-    .m_free = nis_free,
-    .m_slots = nis_slots,
-};
-
-PyMODINIT_FUNC
-PyInit_nis(void)
-{
-    if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "'nis' is deprecated and slated for removal in "
-                     "Python 3.13",
-                     7)) {
-        return NULL;
-    }
-    return PyModuleDef_Init(&nismodule);
-}
diff --git a/Modules/ossaudiodev.c b/Modules/ossaudiodev.c
deleted file mode 100644
index 2319eac449eb4f..00000000000000
--- a/Modules/ossaudiodev.c
+++ /dev/null
@@ -1,1399 +0,0 @@
-/*
- * ossaudiodev -- Python interface to the OSS (Open Sound System) API.
- *                This is the standard audio API for Linux and some
- *                flavours of BSD [XXX which ones?]; it is also available
- *                for a wide range of commercial Unices.
- *
- * Originally written by Peter Bosch, March 2000, as linuxaudiodev.
- *
- * Renamed to ossaudiodev and rearranged/revised/hacked up
- * by Greg Ward <gward@python.net>, November 2002.
- * Mixer interface by Nicholas FitzRoy-Dale <wzdd@lardcave.net>, Dec 2002.
- *
- * (c) 2000 Peter Bosch.  All Rights Reserved.
- * (c) 2002 Gregory P. Ward.  All Rights Reserved.
- * (c) 2002 Python Software Foundation.  All Rights Reserved.
- *
- * $Id$
- */
-
-#ifndef Py_BUILD_CORE_BUILTIN
-#  define Py_BUILD_CORE_MODULE 1
-#endif
-
-#define PY_SSIZE_T_CLEAN
-#include "Python.h"
-#include "pycore_fileutils.h"     // _Py_write()
-#include "structmember.h"         // PyMemberDef
-
-#include <stdlib.h>               // getenv()
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#else
-#define O_RDONLY 00
-#define O_WRONLY 01
-#endif
-
-#include <sys/ioctl.h>
-#ifdef __ANDROID__
-#include <linux/soundcard.h>
-#else
-#include <sys/soundcard.h>
-#endif
-
-#ifdef __linux__
-
-#ifndef HAVE_STDINT_H
-typedef unsigned long uint32_t;
-#endif
-
-#elif defined(__FreeBSD__)
-
-# ifndef SNDCTL_DSP_CHANNELS
-#  define SNDCTL_DSP_CHANNELS SOUND_PCM_WRITE_CHANNELS
-# endif
-
-#endif
-
-typedef struct {
-    PyObject_HEAD
-    const char *devicename;           /* name of the device file */
-    int      fd;                      /* file descriptor */
-    int      mode;                    /* file mode (O_RDONLY, etc.) */
-    Py_ssize_t icount;                /* input count */
-    Py_ssize_t ocount;                /* output count */
-    uint32_t afmts;                   /* audio formats supported by hardware */
-} oss_audio_t;
-
-typedef struct {
-    PyObject_HEAD
-    int      fd;                      /* The open mixer device */
-} oss_mixer_t;
-
-
-static PyTypeObject OSSAudioType;
-static PyTypeObject OSSMixerType;
-
-static PyObject *OSSAudioError;
-
-
-/* ----------------------------------------------------------------------
- * DSP object initialization/deallocation
- */
-
-static oss_audio_t *
-newossobject(PyObject *arg)
-{
-    oss_audio_t *self;
-    int fd, afmts, imode;
-    const char *devicename = NULL;
-    const char *mode = NULL;
-
-    /* Two ways to call open():
-         open(device, mode) (for consistency with builtin open())
-         open(mode)         (for backwards compatibility)
-       because the *first* argument is optional, parsing args is
-       a wee bit tricky. */
-    if (!PyArg_ParseTuple(arg, "s|s:open", &devicename, &mode))
-       return NULL;
-    if (mode == NULL) {                 /* only one arg supplied */
-       mode = devicename;
-       devicename = NULL;
-    }
-
-    if (strcmp(mode, "r") == 0)
-        imode = O_RDONLY;
-    else if (strcmp(mode, "w") == 0)
-        imode = O_WRONLY;
-    else if (strcmp(mode, "rw") == 0)
-        imode = O_RDWR;
-    else {
-        PyErr_SetString(OSSAudioError, "mode must be 'r', 'w', or 'rw'");
-        return NULL;
-    }
-
-    /* Open the correct device: either the 'device' argument,
-       or the AUDIODEV environment variable, or "/dev/dsp". */
-    if (devicename == NULL) {              /* called with one arg */
-       devicename = getenv("AUDIODEV");
-       if (devicename == NULL)             /* $AUDIODEV not set */
-          devicename = "/dev/dsp";
-    }
-
-    /* Open with O_NONBLOCK to avoid hanging on devices that only allow
-       one open at a time.  This does *not* affect later I/O; OSS
-       provides a special ioctl() for non-blocking read/write, which is
-       exposed via oss_nonblock() below. */
-    fd = _Py_open(devicename, imode|O_NONBLOCK);
-    if (fd == -1)
-        return NULL;
-
-    /* And (try to) put it back in blocking mode so we get the
-       expected write() semantics. */
-    if (fcntl(fd, F_SETFL, 0) == -1) {
-        close(fd);
-        PyErr_SetFromErrnoWithFilename(PyExc_OSError, devicename);
-        return NULL;
-    }
-
-    if (ioctl(fd, SNDCTL_DSP_GETFMTS, &afmts) == -1) {
-        close(fd);
-        PyErr_SetFromErrnoWithFilename(PyExc_OSError, devicename);
-        return NULL;
-    }
-    /* Create and initialize the object */
-    if ((self = PyObject_New(oss_audio_t, &OSSAudioType)) == NULL) {
-        close(fd);
-        return NULL;
-    }
-    self->devicename = devicename;
-    self->fd = fd;
-    self->mode = imode;
-    self->icount = self->ocount = 0;
-    self->afmts  = afmts;
-    return self;
-}
-
-static void
-oss_dealloc(oss_audio_t *self)
-{
-    /* if already closed, don't reclose it */
-    if (self->fd != -1)
-        close(self->fd);
-    PyObject_Free(self);
-}
-
-
-/* ----------------------------------------------------------------------
- * Mixer object initialization/deallocation
- */
-
-static oss_mixer_t *
-newossmixerobject(PyObject *arg)
-{
-    const char *devicename = NULL;
-    int fd;
-    oss_mixer_t *self;
-
-    if (!PyArg_ParseTuple(arg, "|s", &devicename)) {
-        return NULL;
-    }
-
-    if (devicename == NULL) {
-        devicename = getenv("MIXERDEV");
-        if (devicename == NULL)            /* MIXERDEV not set */
-            devicename = "/dev/mixer";
-    }
-
-    fd = _Py_open(devicename, O_RDWR);
-    if (fd == -1)
-        return NULL;
-
-    if ((self = PyObject_New(oss_mixer_t, &OSSMixerType)) == NULL) {
-        close(fd);
-        return NULL;
-    }
-
-    self->fd = fd;
-
-    return self;
-}
-
-static void
-oss_mixer_dealloc(oss_mixer_t *self)
-{
-    /* if already closed, don't reclose it */
-    if (self->fd != -1)
-        close(self->fd);
-    PyObject_Free(self);
-}
-
-
-/* Methods to wrap the OSS ioctls.  The calling convention is pretty
-   simple:
-     nonblock()        -> ioctl(fd, SNDCTL_DSP_NONBLOCK)
-     fmt = setfmt(fmt) -> ioctl(fd, SNDCTL_DSP_SETFMT, &fmt)
-     etc.
-*/
-
-
-/* ----------------------------------------------------------------------
- * Helper functions
- */
-
-/* Check if a given file descriptor is valid (i.e. hasn't been closed).
- * If true, return 1. Otherwise, raise ValueError and return 0.
- */
-static int _is_fd_valid(int fd)
-{
-    /* the FD is set to -1 in oss_close()/oss_mixer_close() */
-    if (fd >= 0) {
-        return 1;
-    } else {
-        PyErr_SetString(PyExc_ValueError,
-                        "Operation on closed OSS device.");
-        return 0;
-    }
-}
-
-/* _do_ioctl_1() is a private helper function used for the OSS ioctls --
-   SNDCTL_DSP_{SETFMT,CHANNELS,SPEED} -- that are called from C
-   like this:
-     ioctl(fd, SNDCTL_DSP_cmd, &arg)
-
-   where arg is the value to set, and on return the driver sets arg to
-   the value that was actually set.  Mapping this to Python is obvious:
-     arg = dsp.xxx(arg)
-*/
-static PyObject *
-_do_ioctl_1(int fd, PyObject *args, char *fname, unsigned long cmd)
-{
-    char argfmt[33] = "i:";
-    int arg;
-
-    assert(strlen(fname) <= 30);
-    strncat(argfmt, fname, 30);
-    if (!PyArg_ParseTuple(args, argfmt, &arg))
-        return NULL;
-
-    if (ioctl(fd, cmd, &arg) == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-    return PyLong_FromLong(arg);
-}
-
-
-/* _do_ioctl_1_internal() is a wrapper for ioctls that take no inputs
-   but return an output -- ie. we need to pass a pointer to a local C
-   variable so the driver can write its output there, but from Python
-   all we see is the return value.  For example,
-   SOUND_MIXER_READ_DEVMASK returns a bitmask of available mixer
-   devices, but does not use the value of the parameter passed-in in any
-   way.
-*/
-static PyObject *
-_do_ioctl_1_internal(int fd, PyObject *args, char *fname, unsigned long cmd)
-{
-    char argfmt[32] = ":";
-    int arg = 0;
-
-    assert(strlen(fname) <= 30);
-    strncat(argfmt, fname, 30);
-    if (!PyArg_ParseTuple(args, argfmt, &arg))
-        return NULL;
-
-    if (ioctl(fd, cmd, &arg) == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-    return PyLong_FromLong(arg);
-}
-
-
-
-/* _do_ioctl_0() is a private helper for the no-argument ioctls:
-   SNDCTL_DSP_{SYNC,RESET,POST}. */
-static PyObject *
-_do_ioctl_0(int fd, PyObject *args, char *fname, unsigned long cmd)
-{
-    char argfmt[32] = ":";
-    int rv;
-
-    assert(strlen(fname) <= 30);
-    strncat(argfmt, fname, 30);
-    if (!PyArg_ParseTuple(args, argfmt))
-        return NULL;
-
-    /* According to hannu@opensound.com, all three of the ioctls that
-       use this function can block, so release the GIL.  This is
-       especially important for SYNC, which can block for several
-       seconds. */
-    Py_BEGIN_ALLOW_THREADS
-    rv = ioctl(fd, cmd, 0);
-    Py_END_ALLOW_THREADS
-
-    if (rv == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-    Py_RETURN_NONE;
-}
-
-
-/* ----------------------------------------------------------------------
- * Methods of DSP objects (OSSAudioType)
- */
-
-static PyObject *
-oss_nonblock(oss_audio_t *self, PyObject *unused)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    /* Hmmm: it doesn't appear to be possible to return to blocking
-       mode once we're in non-blocking mode! */
-    if (ioctl(self->fd, SNDCTL_DSP_NONBLOCK, NULL) == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-oss_setfmt(oss_audio_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1(self->fd, args, "setfmt", SNDCTL_DSP_SETFMT);
-}
-
-static PyObject *
-oss_getfmts(oss_audio_t *self, PyObject *unused)
-{
-    int mask;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (ioctl(self->fd, SNDCTL_DSP_GETFMTS, &mask) == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-    return PyLong_FromLong(mask);
-}
-
-static PyObject *
-oss_channels(oss_audio_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1(self->fd, args, "channels", SNDCTL_DSP_CHANNELS);
-}
-
-static PyObject *
-oss_speed(oss_audio_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1(self->fd, args, "speed", SNDCTL_DSP_SPEED);
-}
-
-static PyObject *
-oss_sync(oss_audio_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_0(self->fd, args, "sync", SNDCTL_DSP_SYNC);
-}
-
-static PyObject *
-oss_reset(oss_audio_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_0(self->fd, args, "reset", SNDCTL_DSP_RESET);
-}
-
-static PyObject *
-oss_post(oss_audio_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_0(self->fd, args, "post", SNDCTL_DSP_POST);
-}
-
-
-/* Regular file methods: read(), write(), close(), etc. as well
-   as one convenience method, writeall(). */
-
-static PyObject *
-oss_read(oss_audio_t *self, PyObject *args)
-{
-    Py_ssize_t size, count;
-    PyObject *rv;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (!PyArg_ParseTuple(args, "n:read", &size))
-        return NULL;
-
-    rv = PyBytes_FromStringAndSize(NULL, size);
-    if (rv == NULL)
-        return NULL;
-
-    count = _Py_read(self->fd, PyBytes_AS_STRING(rv), size);
-    if (count == -1) {
-        Py_DECREF(rv);
-        return NULL;
-    }
-
-    self->icount += count;
-    _PyBytes_Resize(&rv, count);
-    return rv;
-}
-
-static PyObject *
-oss_write(oss_audio_t *self, PyObject *args)
-{
-    Py_buffer data;
-    Py_ssize_t rv;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (!PyArg_ParseTuple(args, "y*:write", &data)) {
-        return NULL;
-    }
-
-    rv = _Py_write(self->fd, data.buf, data.len);
-    PyBuffer_Release(&data);
-    if (rv == -1)
-        return NULL;
-
-    self->ocount += rv;
-    return PyLong_FromLong(rv);
-}
-
-static PyObject *
-oss_writeall(oss_audio_t *self, PyObject *args)
-{
-    Py_buffer data;
-    const char *cp;
-    Py_ssize_t size;
-    Py_ssize_t rv;
-    fd_set write_set_fds;
-    int select_rv;
-
-    /* NB. writeall() is only useful in non-blocking mode: according to
-       Guenter Geiger <geiger@xdv.org> on the linux-audio-dev list
-       (http://eca.cx/lad/2002/11/0380.html), OSS guarantees that
-       write() in blocking mode consumes the whole buffer.  In blocking
-       mode, the behaviour of write() and writeall() from Python is
-       indistinguishable. */
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (!PyArg_ParseTuple(args, "y*:writeall", &data))
-        return NULL;
-
-    if (!_PyIsSelectable_fd(self->fd)) {
-        PyErr_SetString(PyExc_ValueError,
-                        "file descriptor out of range for select");
-        PyBuffer_Release(&data);
-        return NULL;
-    }
-    /* use select to wait for audio device to be available */
-    FD_ZERO(&write_set_fds);
-    FD_SET(self->fd, &write_set_fds);
-    cp = (const char *)data.buf;
-    size = data.len;
-
-    while (size > 0) {
-        Py_BEGIN_ALLOW_THREADS
-        select_rv = select(self->fd+1, NULL, &write_set_fds, NULL, NULL);
-        Py_END_ALLOW_THREADS
-
-        assert(select_rv != 0);   /* no timeout, can't expire */
-        if (select_rv == -1) {
-            PyBuffer_Release(&data);
-            return PyErr_SetFromErrno(PyExc_OSError);
-        }
-
-        rv = _Py_write(self->fd, cp, Py_MIN(size, INT_MAX));
-        if (rv == -1) {
-            /* buffer is full, try again */
-            if (errno == EAGAIN) {
-                PyErr_Clear();
-                continue;
-            }
-            /* it's a real error */
-            PyBuffer_Release(&data);
-            return NULL;
-        }
-
-        /* wrote rv bytes */
-        self->ocount += rv;
-        size -= rv;
-        cp += rv;
-    }
-    PyBuffer_Release(&data);
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-oss_close(oss_audio_t *self, PyObject *unused)
-{
-    if (self->fd >= 0) {
-        Py_BEGIN_ALLOW_THREADS
-        close(self->fd);
-        Py_END_ALLOW_THREADS
-        self->fd = -1;
-    }
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-oss_self(PyObject *self, PyObject *unused)
-{
-    return Py_NewRef(self);
-}
-
-static PyObject *
-oss_exit(PyObject *self, PyObject *unused)
-{
-    PyObject *ret = PyObject_CallMethod(self, "close", NULL);
-    if (!ret)
-        return NULL;
-    Py_DECREF(ret);
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-oss_fileno(oss_audio_t *self, PyObject *unused)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return PyLong_FromLong(self->fd);
-}
-
-
-/* Convenience methods: these generally wrap a couple of ioctls into one
-   common task. */
-
-static PyObject *
-oss_setparameters(oss_audio_t *self, PyObject *args)
-{
-    int wanted_fmt, wanted_channels, wanted_rate, strict=0;
-    int fmt, channels, rate;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (!PyArg_ParseTuple(args, "iii|p:setparameters",
-                          &wanted_fmt, &wanted_channels, &wanted_rate,
-                          &strict))
-        return NULL;
-
-    fmt = wanted_fmt;
-    if (ioctl(self->fd, SNDCTL_DSP_SETFMT, &fmt) == -1) {
-        return PyErr_SetFromErrno(PyExc_OSError);
-    }
-    if (strict && fmt != wanted_fmt) {
-        return PyErr_Format
-            (OSSAudioError,
-             "unable to set requested format (wanted %d, got %d)",
-             wanted_fmt, fmt);
-    }
-
-    channels = wanted_channels;
-    if (ioctl(self->fd, SNDCTL_DSP_CHANNELS, &channels) == -1) {
-        return PyErr_SetFromErrno(PyExc_OSError);
-    }
-    if (strict && channels != wanted_channels) {
-        return PyErr_Format
-            (OSSAudioError,
-             "unable to set requested channels (wanted %d, got %d)",
-             wanted_channels, channels);
-    }
-
-    rate = wanted_rate;
-    if (ioctl(self->fd, SNDCTL_DSP_SPEED, &rate) == -1) {
-        return PyErr_SetFromErrno(PyExc_OSError);
-    }
-    if (strict && rate != wanted_rate) {
-        return PyErr_Format
-            (OSSAudioError,
-             "unable to set requested rate (wanted %d, got %d)",
-             wanted_rate, rate);
-    }
-
-    /* Construct the return value: a (fmt, channels, rate) tuple that
-       tells what the audio hardware was actually set to. */
-    return Py_BuildValue("(iii)", fmt, channels, rate);
-}
-
-static int
-_ssize(oss_audio_t *self, int *nchannels, int *ssize)
-{
-    int fmt;
-
-    fmt = 0;
-    if (ioctl(self->fd, SNDCTL_DSP_SETFMT, &fmt) < 0)
-        return -errno;
-
-    switch (fmt) {
-    case AFMT_MU_LAW:
-    case AFMT_A_LAW:
-    case AFMT_U8:
-    case AFMT_S8:
-        *ssize = 1;                     /* 8 bit formats: 1 byte */
-        break;
-    case AFMT_S16_LE:
-    case AFMT_S16_BE:
-    case AFMT_U16_LE:
-    case AFMT_U16_BE:
-        *ssize = 2;                     /* 16 bit formats: 2 byte */
-        break;
-    case AFMT_MPEG:
-    case AFMT_IMA_ADPCM:
-    default:
-        return -EOPNOTSUPP;
-    }
-    if (ioctl(self->fd, SNDCTL_DSP_CHANNELS, nchannels) < 0)
-        return -errno;
-    return 0;
-}
-
-
-/* bufsize returns the size of the hardware audio buffer in number
-   of samples */
-static PyObject *
-oss_bufsize(oss_audio_t *self, PyObject *unused)
-{
-    audio_buf_info ai;
-    int nchannels=0, ssize=0;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    return PyLong_FromLong((ai.fragstotal * ai.fragsize) / (nchannels * ssize));
-}
-
-/* obufcount returns the number of samples that are available in the
-   hardware for playing */
-static PyObject *
-oss_obufcount(oss_audio_t *self, PyObject *unused)
-{
-    audio_buf_info ai;
-    int nchannels=0, ssize=0;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    return PyLong_FromLong((ai.fragstotal * ai.fragsize - ai.bytes) /
-                          (ssize * nchannels));
-}
-
-/* obufcount returns the number of samples that can be played without
-   blocking */
-static PyObject *
-oss_obuffree(oss_audio_t *self, PyObject *unused)
-{
-    audio_buf_info ai;
-    int nchannels=0, ssize=0;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    return PyLong_FromLong(ai.bytes / (ssize * nchannels));
-}
-
-static PyObject *
-oss_getptr(oss_audio_t *self, PyObject *unused)
-{
-    count_info info;
-    int req;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    if (self->mode == O_RDONLY)
-        req = SNDCTL_DSP_GETIPTR;
-    else
-        req = SNDCTL_DSP_GETOPTR;
-    if (ioctl(self->fd, req, &info) == -1) {
-        PyErr_SetFromErrno(PyExc_OSError);
-        return NULL;
-    }
-    return Py_BuildValue("iii", info.bytes, info.blocks, info.ptr);
-}
-
-
-/* ----------------------------------------------------------------------
- * Methods of mixer objects (OSSMixerType)
- */
-
-static PyObject *
-oss_mixer_close(oss_mixer_t *self, PyObject *unused)
-{
-    if (self->fd >= 0) {
-        close(self->fd);
-        self->fd = -1;
-    }
-    Py_RETURN_NONE;
-}
-
-static PyObject *
-oss_mixer_fileno(oss_mixer_t *self, PyObject *unused)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return PyLong_FromLong(self->fd);
-}
-
-/* Simple mixer interface methods */
-
-static PyObject *
-oss_mixer_controls(oss_mixer_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1_internal(self->fd, args, "controls",
-        SOUND_MIXER_READ_DEVMASK);
-}
-
-static PyObject *
-oss_mixer_stereocontrols(oss_mixer_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1_internal(self->fd, args, "stereocontrols",
-        SOUND_MIXER_READ_STEREODEVS);
-}
-
-static PyObject *
-oss_mixer_reccontrols(oss_mixer_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1_internal(self->fd, args, "reccontrols",
-        SOUND_MIXER_READ_RECMASK);
-}
-
-static PyObject *
-oss_mixer_get(oss_mixer_t *self, PyObject *args)
-{
-    int channel, volume;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    /* Can't use _do_ioctl_1 because of encoded arg thingy. */
-    if (!PyArg_ParseTuple(args, "i:get", &channel))
-        return NULL;
-
-    if (channel < 0 || channel > SOUND_MIXER_NRDEVICES) {
-        PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
-        return NULL;
-    }
-
-    if (ioctl(self->fd, MIXER_READ(channel), &volume) == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-
-    return Py_BuildValue("(ii)", volume & 0xff, (volume & 0xff00) >> 8);
-}
-
-static PyObject *
-oss_mixer_set(oss_mixer_t *self, PyObject *args)
-{
-    int channel, volume, leftVol, rightVol;
-
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    /* Can't use _do_ioctl_1 because of encoded arg thingy. */
-    if (!PyArg_ParseTuple(args, "i(ii):set", &channel, &leftVol, &rightVol))
-        return NULL;
-
-    if (channel < 0 || channel > SOUND_MIXER_NRDEVICES) {
-        PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
-        return NULL;
-    }
-
-    if (leftVol < 0 || rightVol < 0 || leftVol > 100 || rightVol > 100) {
-        PyErr_SetString(OSSAudioError, "Volumes must be between 0 and 100.");
-        return NULL;
-    }
-
-    volume = (rightVol << 8) | leftVol;
-
-    if (ioctl(self->fd, MIXER_WRITE(channel), &volume) == -1)
-        return PyErr_SetFromErrno(PyExc_OSError);
-
-    return Py_BuildValue("(ii)", volume & 0xff, (volume & 0xff00) >> 8);
-}
-
-static PyObject *
-oss_mixer_get_recsrc(oss_mixer_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1_internal(self->fd, args, "get_recsrc",
-        SOUND_MIXER_READ_RECSRC);
-}
-
-static PyObject *
-oss_mixer_set_recsrc(oss_mixer_t *self, PyObject *args)
-{
-    if (!_is_fd_valid(self->fd))
-        return NULL;
-
-    return _do_ioctl_1(self->fd, args, "set_recsrc",
-        SOUND_MIXER_WRITE_RECSRC);
-}
-
-
-/* ----------------------------------------------------------------------
- * Method tables and other bureaucracy
- */
-
-static PyMethodDef oss_methods[] = {
-    /* Regular file methods */
-    { "read",           (PyCFunction)oss_read, METH_VARARGS },
-    { "write",          (PyCFunction)oss_write, METH_VARARGS },
-    { "writeall",       (PyCFunction)oss_writeall, METH_VARARGS },
-    { "close",          (PyCFunction)oss_close, METH_NOARGS },
-    { "fileno",         (PyCFunction)oss_fileno, METH_NOARGS },
-
-    /* Simple ioctl wrappers */
-    { "nonblock",       (PyCFunction)oss_nonblock, METH_NOARGS },
-    { "setfmt",         (PyCFunction)oss_setfmt, METH_VARARGS },
-    { "getfmts",        (PyCFunction)oss_getfmts, METH_NOARGS },
-    { "channels",       (PyCFunction)oss_channels, METH_VARARGS },
-    { "speed",          (PyCFunction)oss_speed, METH_VARARGS },
-    { "sync",           (PyCFunction)oss_sync, METH_VARARGS },
-    { "reset",          (PyCFunction)oss_reset, METH_VARARGS },
-    { "post",           (PyCFunction)oss_post, METH_VARARGS },
-
-    /* Convenience methods -- wrap a couple of ioctls together */
-    { "setparameters",  (PyCFunction)oss_setparameters, METH_VARARGS },
-    { "bufsize",        (PyCFunction)oss_bufsize, METH_NOARGS },
-    { "obufcount",      (PyCFunction)oss_obufcount, METH_NOARGS },
-    { "obuffree",       (PyCFunction)oss_obuffree, METH_NOARGS },
-    { "getptr",         (PyCFunction)oss_getptr, METH_NOARGS },
-
-    /* Aliases for backwards compatibility */
-    { "flush",          (PyCFunction)oss_sync, METH_VARARGS },
-
-    /* Support for the context management protocol */
-    { "__enter__",      oss_self, METH_NOARGS },
-    { "__exit__",       oss_exit, METH_VARARGS },
-
-    { NULL,             NULL}           /* sentinel */
-};
-
-static PyMethodDef oss_mixer_methods[] = {
-    /* Regular file method - OSS mixers are ioctl-only interface */
-    { "close",          (PyCFunction)oss_mixer_close, METH_NOARGS },
-    { "fileno",         (PyCFunction)oss_mixer_fileno, METH_NOARGS },
-
-    /* Support for the context management protocol */
-    { "__enter__",      oss_self, METH_NOARGS },
-    { "__exit__",       oss_exit, METH_VARARGS },
-
-    /* Simple ioctl wrappers */
-    { "controls",       (PyCFunction)oss_mixer_controls, METH_VARARGS },
-    { "stereocontrols", (PyCFunction)oss_mixer_stereocontrols, METH_VARARGS},
-    { "reccontrols",    (PyCFunction)oss_mixer_reccontrols, METH_VARARGS},
-    { "get",            (PyCFunction)oss_mixer_get, METH_VARARGS },
-    { "set",            (PyCFunction)oss_mixer_set, METH_VARARGS },
-    { "get_recsrc",     (PyCFunction)oss_mixer_get_recsrc, METH_VARARGS },
-    { "set_recsrc",     (PyCFunction)oss_mixer_set_recsrc, METH_VARARGS },
-
-    { NULL,             NULL}
-};
-
-static PyMemberDef oss_members[] = {
-    {"name", T_STRING, offsetof(oss_audio_t, devicename), READONLY, NULL},
-    {NULL}
-};
-
-static PyObject *
-oss_closed_getter(oss_audio_t *self, void *closure)
-{
-    return PyBool_FromLong(self->fd == -1);
-}
-
-static PyObject *
-oss_mode_getter(oss_audio_t *self, void *closure)
-{
-    switch(self->mode) {
-        case O_RDONLY:
-            return PyUnicode_FromString("r");
-            break;
-        case O_RDWR:
-            return PyUnicode_FromString("rw");
-            break;
-        case O_WRONLY:
-            return PyUnicode_FromString("w");
-            break;
-        default:
-            /* From newossobject(), self->mode can only be one
-               of these three values. */
-            Py_UNREACHABLE();
-    }
-}
-
-static PyGetSetDef oss_getsetlist[] = {
-    {"closed", (getter)oss_closed_getter, (setter)NULL, NULL},
-    {"mode", (getter)oss_mode_getter, (setter)NULL, NULL},
-    {NULL},
-};
-
-static PyTypeObject OSSAudioType = {
-    PyVarObject_HEAD_INIT(&PyType_Type, 0)
-    "ossaudiodev.oss_audio_device", /*tp_name*/
-    sizeof(oss_audio_t),        /*tp_basicsize*/
-    0,                          /*tp_itemsize*/
-    /* methods */
-    (destructor)oss_dealloc,    /*tp_dealloc*/
-    0,                          /*tp_vectorcall_offset*/
-    0,                          /*tp_getattr*/
-    0,                          /*tp_setattr*/
-    0,                          /*tp_as_async*/
-    0,                          /*tp_repr*/
-    0,                          /*tp_as_number*/
-    0,                          /*tp_as_sequence*/
-    0,                          /*tp_as_mapping*/
-    0,                          /*tp_hash*/
-    0,                          /*tp_call*/
-    0,                          /*tp_str*/
-    0,                          /*tp_getattro*/
-    0,                          /*tp_setattro*/
-    0,                          /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT,         /*tp_flags*/
-    0,                          /*tp_doc*/
-    0,                          /*tp_traverse*/
-    0,                          /*tp_clear*/
-    0,                          /*tp_richcompare*/
-    0,                          /*tp_weaklistoffset*/
-    0,                          /*tp_iter*/
-    0,                          /*tp_iternext*/
-    oss_methods,                /*tp_methods*/
-    oss_members,                /*tp_members*/
-    oss_getsetlist,             /*tp_getset*/
-};
-
-static PyTypeObject OSSMixerType = {
-    PyVarObject_HEAD_INIT(&PyType_Type, 0)
-    "ossaudiodev.oss_mixer_device", /*tp_name*/
-    sizeof(oss_mixer_t),            /*tp_basicsize*/
-    0,                              /*tp_itemsize*/
-    /* methods */
-    (destructor)oss_mixer_dealloc,  /*tp_dealloc*/
-    0,                              /*tp_vectorcall_offset*/
-    0,                              /*tp_getattr*/
-    0,                              /*tp_setattr*/
-    0,                              /*tp_as_async*/
-    0,                              /*tp_repr*/
-    0,                              /*tp_as_number*/
-    0,                              /*tp_as_sequence*/
-    0,                              /*tp_as_mapping*/
-    0,                              /*tp_hash*/
-    0,                              /*tp_call*/
-    0,                              /*tp_str*/
-    0,                              /*tp_getattro*/
-    0,                              /*tp_setattro*/
-    0,                              /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT,             /*tp_flags*/
-    0,                              /*tp_doc*/
-    0,                              /*tp_traverse*/
-    0,                              /*tp_clear*/
-    0,                              /*tp_richcompare*/
-    0,                              /*tp_weaklistoffset*/
-    0,                              /*tp_iter*/
-    0,                              /*tp_iternext*/
-    oss_mixer_methods,              /*tp_methods*/
-};
-
-
-static PyObject *
-ossopen(PyObject *self, PyObject *args)
-{
-    return (PyObject *)newossobject(args);
-}
-
-static PyObject *
-ossopenmixer(PyObject *self, PyObject *args)
-{
-    return (PyObject *)newossmixerobject(args);
-}
-
-static PyMethodDef ossaudiodev_methods[] = {
-    { "open", ossopen, METH_VARARGS },
-    { "openmixer", ossopenmixer, METH_VARARGS },
-    { 0, 0 },
-};
-
-
-#define _EXPORT_INT(mod, name) \
-  if (PyModule_AddIntConstant(mod, #name, (long) (name)) == -1) return NULL;
-
-
-static char *control_labels[] = SOUND_DEVICE_LABELS;
-static char *control_names[] = SOUND_DEVICE_NAMES;
-
-
-static int
-build_namelists (PyObject *module)
-{
-    PyObject *labels;
-    PyObject *names;
-    PyObject *s;
-    int num_controls;
-    int i;
-
-    num_controls = Py_ARRAY_LENGTH(control_labels);
-    assert(num_controls == Py_ARRAY_LENGTH(control_names));
-
-    labels = PyList_New(num_controls);
-    names = PyList_New(num_controls);
-    if (labels == NULL || names == NULL)
-        goto error2;
-    for (i = 0; i < num_controls; i++) {
-        s = PyUnicode_FromString(control_labels[i]);
-        if (s == NULL)
-            goto error2;
-        PyList_SET_ITEM(labels, i, s);
-
-        s = PyUnicode_FromString(control_names[i]);
-        if (s == NULL)
-            goto error2;
-        PyList_SET_ITEM(names, i, s);
-    }
-
-    if (PyModule_AddObject(module, "control_labels", labels) == -1)
-        goto error2;
-    if (PyModule_AddObject(module, "control_names", names) == -1)
-        goto error1;
-
-    return 0;
-
-error2:
-    Py_XDECREF(labels);
-error1:
-    Py_XDECREF(names);
-    return -1;
-}
-
-
-static struct PyModuleDef ossaudiodevmodule = {
-        PyModuleDef_HEAD_INIT,
-        "ossaudiodev",
-        NULL,
-        -1,
-        ossaudiodev_methods,
-        NULL,
-        NULL,
-        NULL,
-        NULL
-};
-
-PyMODINIT_FUNC
-PyInit_ossaudiodev(void)
-{
-    PyObject *m;
-
-    if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "'ossaudiodev' is deprecated and slated for removal in "
-                     "Python 3.13",
-                     7)) {
-        return NULL;
-    }
-
-    if (PyType_Ready(&OSSAudioType) < 0)
-        return NULL;
-
-    if (PyType_Ready(&OSSMixerType) < 0)
-        return NULL;
-
-    m = PyModule_Create(&ossaudiodevmodule);
-    if (m == NULL)
-        return NULL;
-
-    OSSAudioError = PyErr_NewException("ossaudiodev.OSSAudioError",
-                                       NULL, NULL);
-    if (OSSAudioError) {
-        /* Each call to PyModule_AddObject decrefs it; compensate: */
-        PyModule_AddObject(m, "error", Py_NewRef(OSSAudioError));
-        PyModule_AddObject(m, "OSSAudioError", Py_NewRef(OSSAudioError));
-    }
-
-    /* Build 'control_labels' and 'control_names' lists and add them
-       to the module. */
-    if (build_namelists(m) == -1)       /* XXX what to do here? */
-        return NULL;
-
-    /* Expose the audio format numbers -- essential! */
-    _EXPORT_INT(m, AFMT_QUERY);
-    _EXPORT_INT(m, AFMT_MU_LAW);
-    _EXPORT_INT(m, AFMT_A_LAW);
-    _EXPORT_INT(m, AFMT_IMA_ADPCM);
-    _EXPORT_INT(m, AFMT_U8);
-    _EXPORT_INT(m, AFMT_S16_LE);
-    _EXPORT_INT(m, AFMT_S16_BE);
-    _EXPORT_INT(m, AFMT_S8);
-    _EXPORT_INT(m, AFMT_U16_LE);
-    _EXPORT_INT(m, AFMT_U16_BE);
-    _EXPORT_INT(m, AFMT_MPEG);
-#ifdef AFMT_AC3
-    _EXPORT_INT(m, AFMT_AC3);
-#endif
-#ifdef AFMT_S16_NE
-    _EXPORT_INT(m, AFMT_S16_NE);
-#endif
-#ifdef AFMT_U16_NE
-    _EXPORT_INT(m, AFMT_U16_NE);
-#endif
-#ifdef AFMT_S32_LE
-    _EXPORT_INT(m, AFMT_S32_LE);
-#endif
-#ifdef AFMT_S32_BE
-    _EXPORT_INT(m, AFMT_S32_BE);
-#endif
-#ifdef AFMT_MPEG
-    _EXPORT_INT(m, AFMT_MPEG);
-#endif
-
-    /* Expose the sound mixer device numbers. */
-    _EXPORT_INT(m, SOUND_MIXER_NRDEVICES);
-    _EXPORT_INT(m, SOUND_MIXER_VOLUME);
-    _EXPORT_INT(m, SOUND_MIXER_BASS);
-    _EXPORT_INT(m, SOUND_MIXER_TREBLE);
-    _EXPORT_INT(m, SOUND_MIXER_SYNTH);
-    _EXPORT_INT(m, SOUND_MIXER_PCM);
-    _EXPORT_INT(m, SOUND_MIXER_SPEAKER);
-    _EXPORT_INT(m, SOUND_MIXER_LINE);
-    _EXPORT_INT(m, SOUND_MIXER_MIC);
-    _EXPORT_INT(m, SOUND_MIXER_CD);
-    _EXPORT_INT(m, SOUND_MIXER_IMIX);
-    _EXPORT_INT(m, SOUND_MIXER_ALTPCM);
-    _EXPORT_INT(m, SOUND_MIXER_RECLEV);
-    _EXPORT_INT(m, SOUND_MIXER_IGAIN);
-    _EXPORT_INT(m, SOUND_MIXER_OGAIN);
-    _EXPORT_INT(m, SOUND_MIXER_LINE1);
-    _EXPORT_INT(m, SOUND_MIXER_LINE2);
-    _EXPORT_INT(m, SOUND_MIXER_LINE3);
-#ifdef SOUND_MIXER_DIGITAL1
-    _EXPORT_INT(m, SOUND_MIXER_DIGITAL1);
-#endif
-#ifdef SOUND_MIXER_DIGITAL2
-    _EXPORT_INT(m, SOUND_MIXER_DIGITAL2);
-#endif
-#ifdef SOUND_MIXER_DIGITAL3
-    _EXPORT_INT(m, SOUND_MIXER_DIGITAL3);
-#endif
-#ifdef SOUND_MIXER_PHONEIN
-    _EXPORT_INT(m, SOUND_MIXER_PHONEIN);
-#endif
-#ifdef SOUND_MIXER_PHONEOUT
-    _EXPORT_INT(m, SOUND_MIXER_PHONEOUT);
-#endif
-#ifdef SOUND_MIXER_VIDEO
-    _EXPORT_INT(m, SOUND_MIXER_VIDEO);
-#endif
-#ifdef SOUND_MIXER_RADIO
-    _EXPORT_INT(m, SOUND_MIXER_RADIO);
-#endif
-#ifdef SOUND_MIXER_MONITOR
-    _EXPORT_INT(m, SOUND_MIXER_MONITOR);
-#endif
-
-    /* Expose all the ioctl numbers for masochists who like to do this
-       stuff directly. */
-#ifdef SNDCTL_COPR_HALT
-    _EXPORT_INT(m, SNDCTL_COPR_HALT);
-#endif
-#ifdef SNDCTL_COPR_LOAD
-    _EXPORT_INT(m, SNDCTL_COPR_LOAD);
-#endif
-#ifdef SNDCTL_COPR_RCODE
-    _EXPORT_INT(m, SNDCTL_COPR_RCODE);
-#endif
-#ifdef SNDCTL_COPR_RCVMSG
-    _EXPORT_INT(m, SNDCTL_COPR_RCVMSG);
-#endif
-#ifdef SNDCTL_COPR_RDATA
-    _EXPORT_INT(m, SNDCTL_COPR_RDATA);
-#endif
-#ifdef SNDCTL_COPR_RESET
-    _EXPORT_INT(m, SNDCTL_COPR_RESET);
-#endif
-#ifdef SNDCTL_COPR_RUN
-    _EXPORT_INT(m, SNDCTL_COPR_RUN);
-#endif
-#ifdef SNDCTL_COPR_SENDMSG
-    _EXPORT_INT(m, SNDCTL_COPR_SENDMSG);
-#endif
-#ifdef SNDCTL_COPR_WCODE
-    _EXPORT_INT(m, SNDCTL_COPR_WCODE);
-#endif
-#ifdef SNDCTL_COPR_WDATA
-    _EXPORT_INT(m, SNDCTL_COPR_WDATA);
-#endif
-#ifdef SNDCTL_DSP_BIND_CHANNEL
-    _EXPORT_INT(m, SNDCTL_DSP_BIND_CHANNEL);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_CHANNELS);
-    _EXPORT_INT(m, SNDCTL_DSP_GETBLKSIZE);
-    _EXPORT_INT(m, SNDCTL_DSP_GETCAPS);
-#ifdef SNDCTL_DSP_GETCHANNELMASK
-    _EXPORT_INT(m, SNDCTL_DSP_GETCHANNELMASK);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_GETFMTS);
-    _EXPORT_INT(m, SNDCTL_DSP_GETIPTR);
-    _EXPORT_INT(m, SNDCTL_DSP_GETISPACE);
-#ifdef SNDCTL_DSP_GETODELAY
-    _EXPORT_INT(m, SNDCTL_DSP_GETODELAY);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_GETOPTR);
-    _EXPORT_INT(m, SNDCTL_DSP_GETOSPACE);
-#ifdef SNDCTL_DSP_GETSPDIF
-    _EXPORT_INT(m, SNDCTL_DSP_GETSPDIF);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_GETTRIGGER);
-#ifdef SNDCTL_DSP_MAPINBUF
-    _EXPORT_INT(m, SNDCTL_DSP_MAPINBUF);
-#endif
-#ifdef SNDCTL_DSP_MAPOUTBUF
-    _EXPORT_INT(m, SNDCTL_DSP_MAPOUTBUF);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_NONBLOCK);
-    _EXPORT_INT(m, SNDCTL_DSP_POST);
-#ifdef SNDCTL_DSP_PROFILE
-    _EXPORT_INT(m, SNDCTL_DSP_PROFILE);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_RESET);
-    _EXPORT_INT(m, SNDCTL_DSP_SAMPLESIZE);
-    _EXPORT_INT(m, SNDCTL_DSP_SETDUPLEX);
-    _EXPORT_INT(m, SNDCTL_DSP_SETFMT);
-    _EXPORT_INT(m, SNDCTL_DSP_SETFRAGMENT);
-#ifdef SNDCTL_DSP_SETSPDIF
-    _EXPORT_INT(m, SNDCTL_DSP_SETSPDIF);
-#endif
-    _EXPORT_INT(m, SNDCTL_DSP_SETSYNCRO);
-    _EXPORT_INT(m, SNDCTL_DSP_SETTRIGGER);
-    _EXPORT_INT(m, SNDCTL_DSP_SPEED);
-    _EXPORT_INT(m, SNDCTL_DSP_STEREO);
-    _EXPORT_INT(m, SNDCTL_DSP_SUBDIVIDE);
-    _EXPORT_INT(m, SNDCTL_DSP_SYNC);
-#ifdef SNDCTL_FM_4OP_ENABLE
-    _EXPORT_INT(m, SNDCTL_FM_4OP_ENABLE);
-#endif
-#ifdef SNDCTL_FM_LOAD_INSTR
-    _EXPORT_INT(m, SNDCTL_FM_LOAD_INSTR);
-#endif
-#ifdef SNDCTL_MIDI_INFO
-    _EXPORT_INT(m, SNDCTL_MIDI_INFO);
-#endif
-#ifdef SNDCTL_MIDI_MPUCMD
-    _EXPORT_INT(m, SNDCTL_MIDI_MPUCMD);
-#endif
-#ifdef SNDCTL_MIDI_MPUMODE
-    _EXPORT_INT(m, SNDCTL_MIDI_MPUMODE);
-#endif
-#ifdef SNDCTL_MIDI_PRETIME
-    _EXPORT_INT(m, SNDCTL_MIDI_PRETIME);
-#endif
-#ifdef SNDCTL_SEQ_CTRLRATE
-    _EXPORT_INT(m, SNDCTL_SEQ_CTRLRATE);
-#endif
-#ifdef SNDCTL_SEQ_GETINCOUNT
-    _EXPORT_INT(m, SNDCTL_SEQ_GETINCOUNT);
-#endif
-#ifdef SNDCTL_SEQ_GETOUTCOUNT
-    _EXPORT_INT(m, SNDCTL_SEQ_GETOUTCOUNT);
-#endif
-#ifdef SNDCTL_SEQ_GETTIME
-    _EXPORT_INT(m, SNDCTL_SEQ_GETTIME);
-#endif
-#ifdef SNDCTL_SEQ_NRMIDIS
-    _EXPORT_INT(m, SNDCTL_SEQ_NRMIDIS);
-#endif
-#ifdef SNDCTL_SEQ_NRSYNTHS
-    _EXPORT_INT(m, SNDCTL_SEQ_NRSYNTHS);
-#endif
-#ifdef SNDCTL_SEQ_OUTOFBAND
-    _EXPORT_INT(m, SNDCTL_SEQ_OUTOFBAND);
-#endif
-#ifdef SNDCTL_SEQ_PANIC
-    _EXPORT_INT(m, SNDCTL_SEQ_PANIC);
-#endif
-#ifdef SNDCTL_SEQ_PERCMODE
-    _EXPORT_INT(m, SNDCTL_SEQ_PERCMODE);
-#endif
-#ifdef SNDCTL_SEQ_RESET
-    _EXPORT_INT(m, SNDCTL_SEQ_RESET);
-#endif
-#ifdef SNDCTL_SEQ_RESETSAMPLES
-    _EXPORT_INT(m, SNDCTL_SEQ_RESETSAMPLES);
-#endif
-#ifdef SNDCTL_SEQ_SYNC
-    _EXPORT_INT(m, SNDCTL_SEQ_SYNC);
-#endif
-#ifdef SNDCTL_SEQ_TESTMIDI
-    _EXPORT_INT(m, SNDCTL_SEQ_TESTMIDI);
-#endif
-#ifdef SNDCTL_SEQ_THRESHOLD
-    _EXPORT_INT(m, SNDCTL_SEQ_THRESHOLD);
-#endif
-#ifdef SNDCTL_SYNTH_CONTROL
-    _EXPORT_INT(m, SNDCTL_SYNTH_CONTROL);
-#endif
-#ifdef SNDCTL_SYNTH_ID
-    _EXPORT_INT(m, SNDCTL_SYNTH_ID);
-#endif
-#ifdef SNDCTL_SYNTH_INFO
-    _EXPORT_INT(m, SNDCTL_SYNTH_INFO);
-#endif
-#ifdef SNDCTL_SYNTH_MEMAVL
-    _EXPORT_INT(m, SNDCTL_SYNTH_MEMAVL);
-#endif
-#ifdef SNDCTL_SYNTH_REMOVESAMPLE
-    _EXPORT_INT(m, SNDCTL_SYNTH_REMOVESAMPLE);
-#endif
-#ifdef SNDCTL_TMR_CONTINUE
-    _EXPORT_INT(m, SNDCTL_TMR_CONTINUE);
-#endif
-#ifdef SNDCTL_TMR_METRONOME
-    _EXPORT_INT(m, SNDCTL_TMR_METRONOME);
-#endif
-#ifdef SNDCTL_TMR_SELECT
-    _EXPORT_INT(m, SNDCTL_TMR_SELECT);
-#endif
-#ifdef SNDCTL_TMR_SOURCE
-    _EXPORT_INT(m, SNDCTL_TMR_SOURCE);
-#endif
-#ifdef SNDCTL_TMR_START
-    _EXPORT_INT(m, SNDCTL_TMR_START);
-#endif
-#ifdef SNDCTL_TMR_STOP
-    _EXPORT_INT(m, SNDCTL_TMR_STOP);
-#endif
-#ifdef SNDCTL_TMR_TEMPO
-    _EXPORT_INT(m, SNDCTL_TMR_TEMPO);
-#endif
-#ifdef SNDCTL_TMR_TIMEBASE
-    _EXPORT_INT(m, SNDCTL_TMR_TIMEBASE);
-#endif
-    return m;
-}
diff --git a/Modules/overlapped.c b/Modules/overlapped.c
index ac637316583d2d..fd40e91d0f50c4 100644
--- a/Modules/overlapped.c
+++ b/Modules/overlapped.c
@@ -7,8 +7,11 @@
 /* XXX check overflow and DWORD <-> Py_ssize_t conversions
    Check itemsize */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
 
 #define WINDOWS_LEAN_AND_MEAN
 #include <winsock2.h>
@@ -17,10 +20,10 @@
 
 #if defined(MS_WIN32) && !defined(MS_WIN64)
 #  define F_POINTER "k"
-#  define T_POINTER T_ULONG
+#  define T_POINTER Py_T_ULONG
 #else
 #  define F_POINTER "K"
-#  define T_POINTER T_ULONGLONG
+#  define T_POINTER Py_T_ULONGLONG
 #endif
 
 #define F_HANDLE F_POINTER
@@ -35,13 +38,14 @@
 class pointer_converter(CConverter):
     format_unit = '"F_POINTER"'
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
             {paramname} = PyLong_AsVoidPtr({argname});
             if (!{paramname} && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.parser_name)
+            """,
+            argname=argname)
 
 class OVERLAPPED_converter(pointer_converter):
     type = 'OVERLAPPED *'
@@ -52,13 +56,14 @@ class HANDLE_converter(pointer_converter):
 class ULONG_PTR_converter(pointer_converter):
     type = 'ULONG_PTR'
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
             {paramname} = (uintptr_t)PyLong_AsVoidPtr({argname});
             if (!{paramname} && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.parser_name)
+            """,
+            argname=argname)
 
 class DWORD_converter(unsigned_long_converter):
     type = 'DWORD'
@@ -66,7 +71,7 @@ class DWORD_converter(unsigned_long_converter):
 class BOOL_converter(int_converter):
     type = 'BOOL'
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=8a07ea3018f4cec8]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=436f4440630a304c]*/
 
 /*[clinic input]
 module _overlapped
@@ -367,8 +372,9 @@ _overlapped_RegisterWaitWithQueue_impl(PyObject *module, HANDLE Object,
             &NewWaitObject, Object, PostToQueueCallback, pdata, Milliseconds,
             WT_EXECUTEINWAITTHREAD | WT_EXECUTEONLYONCE))
     {
+        SetFromWindowsErr(0);
         PyMem_RawFree(pdata);
-        return SetFromWindowsErr(0);
+        return NULL;
     }
 
     return Py_BuildValue(F_HANDLE, NewWaitObject);
@@ -445,8 +451,8 @@ EventAttributes must be None.
 static PyObject *
 _overlapped_CreateEvent_impl(PyObject *module, PyObject *EventAttributes,
                              BOOL ManualReset, BOOL InitialState,
-                             const Py_UNICODE *Name)
-/*[clinic end generated code: output=8e04f0916c17b13d input=dbc36ae14375ba24]*/
+                             const wchar_t *Name)
+/*[clinic end generated code: output=b17ddc5fd506972d input=dbc36ae14375ba24]*/
 {
     HANDLE Event;
 
@@ -593,8 +599,7 @@ _overlapped_FormatMessage_impl(PyObject *module, DWORD code)
     if (n) {
         while (iswspace(lpMsgBuf[n-1]))
             --n;
-        lpMsgBuf[n] = L'\0';
-        res = Py_BuildValue("u", lpMsgBuf);
+        res = PyUnicode_FromWideChar(lpMsgBuf, n);
     } else {
         res = PyUnicode_FromFormat("unknown error code %u", code);
     }
@@ -1600,8 +1605,8 @@ Connect to the pipe for asynchronous I/O (overlapped).
 
 static PyObject *
 _overlapped_Overlapped_ConnectPipe_impl(OverlappedObject *self,
-                                        const Py_UNICODE *Address)
-/*[clinic end generated code: output=3cc9661667d459d4 input=167c06a274efcefc]*/
+                                        const wchar_t *Address)
+/*[clinic end generated code: output=67cbd8e4d3a57855 input=167c06a274efcefc]*/
 {
     HANDLE PipeHandle;
 
@@ -1942,12 +1947,12 @@ static PyMethodDef Overlapped_methods[] = {
 };
 
 static PyMemberDef Overlapped_members[] = {
-    {"error", T_ULONG,
+    {"error", Py_T_ULONG,
      offsetof(OverlappedObject, error),
-     READONLY, "Error from last operation"},
+     Py_READONLY, "Error from last operation"},
     {"event", T_HANDLE,
      offsetof(OverlappedObject, overlapped) + offsetof(OVERLAPPED, hEvent),
-     READONLY, "Overlapped event handle"},
+     Py_READONLY, "Overlapped event handle"},
     {NULL}
 };
 
@@ -1996,12 +2001,7 @@ static PyMethodDef overlapped_functions[] = {
 
 #define WINAPI_CONSTANT(fmt, con) \
     do { \
-        PyObject *value = Py_BuildValue(fmt, con); \
-        if (value == NULL) { \
-            return -1; \
-        } \
-        if (PyModule_AddObject(module, #con, value) < 0 ) { \
-            Py_DECREF(value); \
+        if (PyModule_Add(module, #con, Py_BuildValue(fmt, con)) < 0 ) { \
             return -1; \
         } \
     } while (0)
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 5022fdeb03703a..ddbb4cd43babfc 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -7,13 +7,12 @@
    of the compiler used.  Different compilers define their own feature
    test macro, e.g. '_MSC_VER'. */
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 
 #ifdef __VXWORKS__
 #  include "pycore_bitutils.h"    // _Py_popcount32()
 #endif
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _PyEval_ReInitThreads()
 #include "pycore_fileutils.h"     // _Py_closerange()
@@ -21,9 +20,14 @@
 #include "pycore_initconfig.h"    // _PyStatus_EXCEPTION()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_object.h"        // _PyObject_LookupSpecial()
+#include "pycore_pylifecycle.h"   // _PyOS_URandom()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_signal.h"        // Py_NSIG
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // symlink()
+#endif
+
 #ifdef MS_WINDOWS
 #  include <windows.h>
 #  if !defined(MS_WINDOWS_GAMES) || defined(MS_WINDOWS_DESKTOP)
@@ -37,7 +41,6 @@
 #  endif /* MS_WINDOWS_DESKTOP | MS_WINDOWS_SYSTEM */
 #endif
 
-#include "structmember.h"         // PyMemberDef
 #ifndef MS_WINDOWS
 #  include "posixmodule.h"
 #else
@@ -57,6 +60,17 @@
 
 #include <stdio.h>                // ctermid()
 #include <stdlib.h>               // system()
+#ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>           // futimes()
+#endif
+
+
+// SGI apparently needs this forward declaration
+#ifdef HAVE__GETPTY
+#  include <sys/types.h>          // mode_t
+   extern char * _getpty(int *, int, mode_t, int);
+#endif
+
 
 /*
  * A number of APIs are available on macOS from a certain macOS version.
@@ -211,10 +225,6 @@
 #endif
 
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 PyDoc_STRVAR(posix__doc__,
 "This module provides access to operating system functionality that is\n\
 standardized by the C Standard and the POSIX standard (a thinly\n\
@@ -278,17 +288,19 @@ corresponding Unix manual entries for more information on calls.");
 #  include <sched.h>
 #endif
 
-#ifdef HAVE_COPY_FILE_RANGE
-#  include <unistd.h>
-#endif
-
 #if !defined(CPU_ALLOC) && defined(HAVE_SCHED_SETAFFINITY)
 #  undef HAVE_SCHED_SETAFFINITY
 #endif
 
-#if defined(HAVE_SYS_XATTR_H) && defined(__linux__) && !defined(__FreeBSD_kernel__) && !defined(__GNU__)
-#  define USE_XATTRS
-#  include <linux/limits.h>  // Needed for XATTR_SIZE_MAX on musl libc.
+#if defined(HAVE_SYS_XATTR_H)
+#  if defined(HAVE_LINUX_LIMITS_H) && !defined(__FreeBSD_kernel__) && !defined(__GNU__)
+#    define USE_XATTRS
+#    include <linux/limits.h>  // Needed for XATTR_SIZE_MAX on musl libc.
+#  endif
+#  if defined(__CYGWIN__)
+#    define USE_XATTRS
+#    include <cygwin/limits.h>  // Needed for XATTR_SIZE_MAX and XATTR_LIST_MAX.
+#  endif
 #endif
 
 #ifdef USE_XATTRS
@@ -544,6 +556,11 @@ extern char        *ctermid_r(char *);
 #  include <sys/eventfd.h>
 #endif
 
+/* timerfd_create() */
+#ifdef HAVE_SYS_TIMERFD_H
+#  include <sys/timerfd.h>
+#endif
+
 #ifdef _Py_MEMORY_SANITIZER
 #  include <sanitizer/msan_interface.h>
 #endif
@@ -1013,6 +1030,10 @@ typedef struct {
     PyObject *struct_rusage;
 #endif
     PyObject *st_mode;
+#ifndef MS_WINDOWS
+    // times() clock frequency in hertz; used by os.times()
+    long ticks_per_second;
+#endif
 } _posixstate;
 
 
@@ -1197,7 +1218,7 @@ path_converter(PyObject *o, void *p)
         PyObject *func, *res;
 
         func = _PyObject_LookupSpecial(o, &_Py_ID(__fspath__));
-        if (NULL == func) {
+        if ((NULL == func) || (func == Py_None)) {
             goto error_format;
         }
         res = _PyObject_CallNoArgs(func);
@@ -1864,6 +1885,7 @@ win32_xstat_slow_impl(const wchar_t *path, struct _Py_stat_struct *result,
     BY_HANDLE_FILE_INFORMATION fileInfo;
     FILE_BASIC_INFO basicInfo;
     FILE_ID_INFO idInfo;
+    FILE_ID_INFO *pIdInfo = &idInfo;
     FILE_ATTRIBUTE_TAG_INFO tagInfo = { 0 };
     DWORD fileType, error;
     BOOL isUnhandledTag = FALSE;
@@ -2000,9 +2022,7 @@ win32_xstat_slow_impl(const wchar_t *path, struct _Py_stat_struct *result,
 
         if (!GetFileInformationByHandle(hFile, &fileInfo) ||
             !GetFileInformationByHandleEx(hFile, FileBasicInfo,
-                                          &basicInfo, sizeof(basicInfo)) ||
-            !GetFileInformationByHandleEx(hFile, FileIdInfo,
-                                          &idInfo, sizeof(idInfo))) {
+                                          &basicInfo, sizeof(basicInfo))) {
             switch (GetLastError()) {
             case ERROR_INVALID_PARAMETER:
             case ERROR_INVALID_FUNCTION:
@@ -2018,7 +2038,12 @@ win32_xstat_slow_impl(const wchar_t *path, struct _Py_stat_struct *result,
         }
     }
 
-    _Py_attribute_data_to_stat(&fileInfo, tagInfo.ReparseTag, &basicInfo, &idInfo, result);
+    if (!GetFileInformationByHandleEx(hFile, FileIdInfo, &idInfo, sizeof(idInfo))) {
+        /* Failed to get FileIdInfo, so do not pass it along */
+        pIdInfo = NULL;
+    }
+
+    _Py_attribute_data_to_stat(&fileInfo, tagInfo.ReparseTag, &basicInfo, pIdInfo, result);
     update_st_mode_from_path(path, fileInfo.dwFileAttributes, result);
 
 cleanup:
@@ -2381,21 +2406,26 @@ _posix_free(void *module)
    _posix_clear((PyObject *)module);
 }
 
-static void
+static int
 fill_time(PyObject *module, PyObject *v, int s_index, int f_index, int ns_index, time_t sec, unsigned long nsec)
 {
-    PyObject *s = _PyLong_FromTime_t(sec);
-    PyObject *ns_fractional = PyLong_FromUnsignedLong(nsec);
+    assert(!PyErr_Occurred());
+
+    int res = -1;
     PyObject *s_in_ns = NULL;
     PyObject *ns_total = NULL;
     PyObject *float_s = NULL;
 
-    if (!(s && ns_fractional))
+    PyObject *s = _PyLong_FromTime_t(sec);
+    PyObject *ns_fractional = PyLong_FromUnsignedLong(nsec);
+    if (!(s && ns_fractional)) {
         goto exit;
+    }
 
     s_in_ns = PyNumber_Multiply(s, get_posix_state(module)->billion);
-    if (!s_in_ns)
+    if (!s_in_ns) {
         goto exit;
+    }
 
     ns_total = PyNumber_Add(s_in_ns, ns_fractional);
     if (!ns_total)
@@ -2418,12 +2448,17 @@ fill_time(PyObject *module, PyObject *v, int s_index, int f_index, int ns_index,
         PyStructSequence_SET_ITEM(v, ns_index, ns_total);
         ns_total = NULL;
     }
+
+    assert(!PyErr_Occurred());
+    res = 0;
+
 exit:
     Py_XDECREF(s);
     Py_XDECREF(ns_fractional);
     Py_XDECREF(s_in_ns);
     Py_XDECREF(ns_total);
     Py_XDECREF(float_s);
+    return res;
 }
 
 #ifdef MS_WINDOWS
@@ -2458,34 +2493,47 @@ _pystat_l128_from_l64_l64(uint64_t low, uint64_t high)
 static PyObject*
 _pystat_fromstructstat(PyObject *module, STRUCT_STAT *st)
 {
-    unsigned long ansec, mnsec, cnsec;
+    assert(!PyErr_Occurred());
+
     PyObject *StatResultType = get_posix_state(module)->StatResultType;
     PyObject *v = PyStructSequence_New((PyTypeObject *)StatResultType);
-    if (v == NULL)
+    if (v == NULL) {
         return NULL;
+    }
 
-    PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long)st->st_mode));
+#define SET_ITEM(pos, expr) \
+    do { \
+        PyObject *obj = (expr); \
+        if (obj == NULL) { \
+            goto error; \
+        } \
+        PyStructSequence_SET_ITEM(v, (pos), obj); \
+    } while (0)
+
+    SET_ITEM(0, PyLong_FromLong((long)st->st_mode));
 #ifdef MS_WINDOWS
-    PyStructSequence_SET_ITEM(v, 1, _pystat_l128_from_l64_l64(st->st_ino, st->st_ino_high));
-    PyStructSequence_SET_ITEM(v, 2, PyLong_FromUnsignedLongLong(st->st_dev));
+    SET_ITEM(1, _pystat_l128_from_l64_l64(st->st_ino, st->st_ino_high));
+    SET_ITEM(2, PyLong_FromUnsignedLongLong(st->st_dev));
 #else
     static_assert(sizeof(unsigned long long) >= sizeof(st->st_ino),
                   "stat.st_ino is larger than unsigned long long");
-    PyStructSequence_SET_ITEM(v, 1, PyLong_FromUnsignedLongLong(st->st_ino));
-    PyStructSequence_SET_ITEM(v, 2, _PyLong_FromDev(st->st_dev));
+    SET_ITEM(1, PyLong_FromUnsignedLongLong(st->st_ino));
+    SET_ITEM(2, _PyLong_FromDev(st->st_dev));
 #endif
-    PyStructSequence_SET_ITEM(v, 3, PyLong_FromLong((long)st->st_nlink));
+    SET_ITEM(3, PyLong_FromLong((long)st->st_nlink));
 #if defined(MS_WINDOWS)
-    PyStructSequence_SET_ITEM(v, 4, PyLong_FromLong(0));
-    PyStructSequence_SET_ITEM(v, 5, PyLong_FromLong(0));
+    SET_ITEM(4, PyLong_FromLong(0));
+    SET_ITEM(5, PyLong_FromLong(0));
 #else
-    PyStructSequence_SET_ITEM(v, 4, _PyLong_FromUid(st->st_uid));
-    PyStructSequence_SET_ITEM(v, 5, _PyLong_FromGid(st->st_gid));
+    SET_ITEM(4, _PyLong_FromUid(st->st_uid));
+    SET_ITEM(5, _PyLong_FromGid(st->st_gid));
 #endif
     static_assert(sizeof(long long) >= sizeof(st->st_size),
                   "stat.st_size is larger than long long");
-    PyStructSequence_SET_ITEM(v, 6, PyLong_FromLongLong(st->st_size));
+    SET_ITEM(6, PyLong_FromLongLong(st->st_size));
 
+    // Set st_atime, st_mtime and st_ctime
+    unsigned long ansec, mnsec, cnsec;
 #if defined(HAVE_STAT_TV_NSEC)
     ansec = st->st_atim.tv_nsec;
     mnsec = st->st_mtim.tv_nsec;
@@ -2501,67 +2549,67 @@ _pystat_fromstructstat(PyObject *module, STRUCT_STAT *st)
 #else
     ansec = mnsec = cnsec = 0;
 #endif
-    fill_time(module, v, 7, 10, 13, st->st_atime, ansec);
-    fill_time(module, v, 8, 11, 14, st->st_mtime, mnsec);
-    fill_time(module, v, 9, 12, 15, st->st_ctime, cnsec);
+    if (fill_time(module, v, 7, 10, 13, st->st_atime, ansec) < 0) {
+        goto error;
+    }
+    if (fill_time(module, v, 8, 11, 14, st->st_mtime, mnsec) < 0) {
+        goto error;
+    }
+    if (fill_time(module, v, 9, 12, 15, st->st_ctime, cnsec) < 0) {
+        goto error;
+    }
 
 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
-    PyStructSequence_SET_ITEM(v, ST_BLKSIZE_IDX,
-                              PyLong_FromLong((long)st->st_blksize));
+    SET_ITEM(ST_BLKSIZE_IDX, PyLong_FromLong((long)st->st_blksize));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_BLOCKS
-    PyStructSequence_SET_ITEM(v, ST_BLOCKS_IDX,
-                              PyLong_FromLong((long)st->st_blocks));
+    SET_ITEM(ST_BLOCKS_IDX, PyLong_FromLong((long)st->st_blocks));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_RDEV
-    PyStructSequence_SET_ITEM(v, ST_RDEV_IDX,
-                              PyLong_FromLong((long)st->st_rdev));
+    SET_ITEM(ST_RDEV_IDX, PyLong_FromLong((long)st->st_rdev));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_GEN
-    PyStructSequence_SET_ITEM(v, ST_GEN_IDX,
-                              PyLong_FromLong((long)st->st_gen));
+    SET_ITEM(ST_GEN_IDX, PyLong_FromLong((long)st->st_gen));
 #endif
 #if defined(HAVE_STRUCT_STAT_ST_BIRTHTIME)
     {
-      PyObject *val;
-      unsigned long bsec,bnsec;
+      unsigned long bsec, bnsec;
       bsec = (long)st->st_birthtime;
 #ifdef HAVE_STAT_TV_NSEC2
       bnsec = st->st_birthtimespec.tv_nsec;
 #else
       bnsec = 0;
 #endif
-      val = PyFloat_FromDouble(bsec + 1e-9*bnsec);
-      PyStructSequence_SET_ITEM(v, ST_BIRTHTIME_IDX,
-                                val);
+      SET_ITEM(ST_BIRTHTIME_IDX, PyFloat_FromDouble(bsec + bnsec * 1e-9));
     }
 #elif defined(MS_WINDOWS)
-    fill_time(module, v, -1, ST_BIRTHTIME_IDX, ST_BIRTHTIME_NS_IDX,
-              st->st_birthtime, st->st_birthtime_nsec);
+    if (fill_time(module, v, -1, ST_BIRTHTIME_IDX, ST_BIRTHTIME_NS_IDX,
+                  st->st_birthtime, st->st_birthtime_nsec) < 0) {
+        goto error;
+    }
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_FLAGS
-    PyStructSequence_SET_ITEM(v, ST_FLAGS_IDX,
-                              PyLong_FromLong((long)st->st_flags));
+    SET_ITEM(ST_FLAGS_IDX, PyLong_FromLong((long)st->st_flags));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_FILE_ATTRIBUTES
-    PyStructSequence_SET_ITEM(v, ST_FILE_ATTRIBUTES_IDX,
-                              PyLong_FromUnsignedLong(st->st_file_attributes));
+    SET_ITEM(ST_FILE_ATTRIBUTES_IDX,
+             PyLong_FromUnsignedLong(st->st_file_attributes));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_FSTYPE
-   PyStructSequence_SET_ITEM(v, ST_FSTYPE_IDX,
-                              PyUnicode_FromString(st->st_fstype));
+   SET_ITEM(ST_FSTYPE_IDX, PyUnicode_FromString(st->st_fstype));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_REPARSE_TAG
-    PyStructSequence_SET_ITEM(v, ST_REPARSE_TAG_IDX,
-                              PyLong_FromUnsignedLong(st->st_reparse_tag));
+    SET_ITEM(ST_REPARSE_TAG_IDX, PyLong_FromUnsignedLong(st->st_reparse_tag));
 #endif
 
-    if (PyErr_Occurred()) {
-        Py_DECREF(v);
-        return NULL;
-    }
-
+    assert(!PyErr_Occurred());
     return v;
+
+error:
+    Py_DECREF(v);
+    return NULL;
+
+#undef SET_ITEM
 }
 
 /* POSIX methods */
@@ -3873,9 +3921,10 @@ posix_getcwd(int use_bytes)
         return NULL;
     }
     if (!len) {
+        PyErr_SetFromWindowsErr(0);
         if (wbuf2 != wbuf)
             PyMem_RawFree(wbuf2);
-        return PyErr_SetFromWindowsErr(0);
+        return NULL;
     }
 
     PyObject *resobj = PyUnicode_FromWideChar(wbuf2, len);
@@ -3923,8 +3972,9 @@ posix_getcwd(int use_bytes)
         return PyErr_NoMemory();
     }
     if (cwd == NULL) {
+        posix_error();
         PyMem_RawFree(buf);
-        return posix_error();
+        return NULL;
     }
 
     PyObject *obj;
@@ -4136,8 +4186,8 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
         int error = GetLastError();
         if (error == ERROR_FILE_NOT_FOUND)
             goto exit;
-        Py_DECREF(list);
-        list = path_error(path);
+        path_error(path);
+        Py_CLEAR(list);
         goto exit;
     }
     do {
@@ -4150,12 +4200,12 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
                 Py_SETREF(v, PyUnicode_EncodeFSDefault(v));
             }
             if (v == NULL) {
-                Py_SETREF(list, NULL);
+                Py_CLEAR(list);
                 break;
             }
             if (PyList_Append(list, v) != 0) {
                 Py_DECREF(v);
-                Py_SETREF(list, NULL);
+                Py_CLEAR(list);
                 break;
             }
             Py_DECREF(v);
@@ -4166,8 +4216,8 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
         /* FindNextFile sets error to ERROR_NO_MORE_FILES if
            it got to the end of the directory. */
         if (!result && GetLastError() != ERROR_NO_MORE_FILES) {
-            Py_DECREF(list);
-            list = path_error(path);
+            path_error(path);
+            Py_CLEAR(list);
             goto exit;
         }
     } while (result == TRUE);
@@ -4176,8 +4226,8 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
     if (hFindFile != INVALID_HANDLE_VALUE) {
         if (FindClose(hFindFile) == FALSE) {
             if (list != NULL) {
-                Py_DECREF(list);
-                list = path_error(path);
+                path_error(path);
+                Py_CLEAR(list);
             }
         }
     }
@@ -4239,7 +4289,8 @@ _posix_listdir(path_t *path, PyObject *list)
     }
 
     if (dirp == NULL) {
-        list = path_error(path);
+        path_error(path);
+        list = NULL;
 #ifdef HAVE_FDOPENDIR
         if (fd != -1) {
             Py_BEGIN_ALLOW_THREADS
@@ -4261,8 +4312,8 @@ _posix_listdir(path_t *path, PyObject *list)
             if (errno == 0) {
                 break;
             } else {
-                Py_DECREF(list);
-                list = path_error(path);
+                path_error(path);
+                Py_CLEAR(list);
                 goto exit;
             }
         }
@@ -4530,6 +4581,95 @@ os_listmounts_impl(PyObject *module, path_t *volume)
 }
 
 
+/*[clinic input]
+os._path_isdevdrive
+
+    path: path_t
+
+Determines whether the specified path is on a Windows Dev Drive.
+
+[clinic start generated code]*/
+
+static PyObject *
+os__path_isdevdrive_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=1f437ea6677433a2 input=ee83e4996a48e23d]*/
+{
+#ifndef PERSISTENT_VOLUME_STATE_DEV_VOLUME
+    /* This flag will be documented at
+       https://learn.microsoft.com/windows-hardware/drivers/ddi/ntifs/ns-ntifs-_file_fs_persistent_volume_information
+       after release, and will be available in the latest WinSDK.
+       We include the flag to avoid a specific version dependency
+       on the latest WinSDK. */
+    const int PERSISTENT_VOLUME_STATE_DEV_VOLUME = 0x00002000;
+#endif
+    int err = 0;
+    PyObject *r = NULL;
+    wchar_t volume[MAX_PATH];
+
+    Py_BEGIN_ALLOW_THREADS
+    if (!GetVolumePathNameW(path->wide, volume, MAX_PATH)) {
+        /* invalid path of some kind */
+        /* Note that this also includes the case where a volume is mounted
+           in a path longer than 260 characters. This is likely to be rare
+           and problematic for other reasons, so a (soft) failure in this
+           check seems okay. */
+        err = GetLastError();
+    } else if (GetDriveTypeW(volume) != DRIVE_FIXED) {
+        /* only care about local dev drives */
+        r = Py_False;
+    } else {
+        HANDLE hVolume = CreateFileW(
+            volume,
+            FILE_READ_ATTRIBUTES,
+            FILE_SHARE_READ | FILE_SHARE_WRITE,
+            NULL,
+            OPEN_EXISTING,
+            FILE_FLAG_BACKUP_SEMANTICS,
+            NULL
+        );
+        if (hVolume == INVALID_HANDLE_VALUE) {
+            err = GetLastError();
+        } else {
+            FILE_FS_PERSISTENT_VOLUME_INFORMATION volumeState = {0};
+            volumeState.Version = 1;
+            volumeState.FlagMask = PERSISTENT_VOLUME_STATE_DEV_VOLUME;
+            if (!DeviceIoControl(
+                hVolume,
+                FSCTL_QUERY_PERSISTENT_VOLUME_STATE,
+                &volumeState,
+                sizeof(volumeState),
+                &volumeState,
+                sizeof(volumeState),
+                NULL,
+                NULL
+            )) {
+                err = GetLastError();
+            }
+            CloseHandle(hVolume);
+            if (err == ERROR_INVALID_PARAMETER) {
+                /* not supported on this platform */
+                r = Py_False;
+            } else if (!err) {
+                r = (volumeState.VolumeFlags & PERSISTENT_VOLUME_STATE_DEV_VOLUME)
+                    ? Py_True : Py_False;
+            }
+        }
+    }
+    Py_END_ALLOW_THREADS
+
+    if (err) {
+        PyErr_SetFromWindowsErr(err);
+        return NULL;
+    }
+
+    if (r) {
+        return Py_NewRef(r);
+    }
+
+    return NULL;
+}
+
+
 int
 _PyOS_getfullpathname(const wchar_t *path, wchar_t **abspath_p)
 {
@@ -4684,6 +4824,37 @@ os__getfinalpathname_impl(PyObject *module, path_t *path)
     return result;
 }
 
+/*[clinic input]
+os._findfirstfile
+    path: path_t
+    /
+A function to get the real file name without accessing the file in Windows.
+[clinic start generated code]*/
+
+static PyObject *
+os__findfirstfile_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=106dd3f0779c83dd input=0734dff70f60e1a8]*/
+{
+    PyObject *result;
+    HANDLE hFindFile;
+    WIN32_FIND_DATAW wFileData;
+    WCHAR *wRealFileName;
+
+    Py_BEGIN_ALLOW_THREADS
+    hFindFile = FindFirstFileW(path->wide, &wFileData);
+    Py_END_ALLOW_THREADS
+
+    if (hFindFile == INVALID_HANDLE_VALUE) {
+        path_error(path);
+        return NULL;
+    }
+
+    wRealFileName = wFileData.cFileName;
+    result = PyUnicode_FromWideChar(wRealFileName, wcslen(wRealFileName));
+    FindClose(hFindFile);
+    return result;
+}
+
 
 /*[clinic input]
 os._getvolumepathname
@@ -4782,25 +4953,25 @@ os__path_splitroot_impl(PyObject *module, path_t *path)
 /*[clinic input]
 os._path_isdir
 
-    path: 'O'
+    s: 'O'
 
 Return true if the pathname refers to an existing directory.
 
 [clinic start generated code]*/
 
 static PyObject *
-os__path_isdir_impl(PyObject *module, PyObject *path)
-/*[clinic end generated code: output=00faea0af309669d input=b1d2571cf7291aaf]*/
+os__path_isdir_impl(PyObject *module, PyObject *s)
+/*[clinic end generated code: output=9d87ab3c8b8a4e61 input=c17f7ef21d22d64e]*/
 {
     HANDLE hfile;
     BOOL close_file = TRUE;
     FILE_BASIC_INFO info;
-    path_t _path = PATH_T_INITIALIZE("isdir", "path", 0, 1);
+    path_t _path = PATH_T_INITIALIZE("isdir", "s", 0, 1);
     int result;
     BOOL slow_path = TRUE;
     FILE_STAT_BASIC_INFORMATION statInfo;
 
-    if (!path_converter(path, &_path)) {
+    if (!path_converter(s, &_path)) {
         path_cleanup(&_path);
         if (PyErr_ExceptionMatches(PyExc_ValueError)) {
             PyErr_Clear();
@@ -5182,7 +5353,9 @@ os__path_normpath_impl(PyObject *module, PyObject *path)
     if (!buffer) {
         return NULL;
     }
-    PyObject *result = PyUnicode_FromWideChar(_Py_normpath(buffer, len), -1);
+    Py_ssize_t norm_len;
+    wchar_t *norm_path = _Py_normpath_and_size(buffer, len, &norm_len);
+    PyObject *result = PyUnicode_FromWideChar(norm_path, norm_len);
     PyMem_Free(buffer);
     return result;
 }
@@ -5557,8 +5730,8 @@ Execute the command in a subshell.
 [clinic start generated code]*/
 
 static long
-os_system_impl(PyObject *module, const Py_UNICODE *command)
-/*[clinic end generated code: output=5b7c3599c068ca42 input=303f5ce97df606b0]*/
+os_system_impl(PyObject *module, const wchar_t *command)
+/*[clinic end generated code: output=dd528cbd5943a679 input=303f5ce97df606b0]*/
 {
     long result;
 
@@ -6198,11 +6371,7 @@ os_utime_impl(PyObject *module, path_t *path, PyObject *times, PyObject *ns,
         _Py_time_t_to_FILE_TIME(utime.mtime_s, utime.mtime_ns, &mtime);
     }
     if (!SetFileTime(hFile, NULL, &atime, &mtime)) {
-        /* Avoid putting the file name into the error here,
-           as that may confuse the user into believing that
-           something is wrong with the file, when it also
-           could be the time stamp that gives a problem. */
-        PyErr_SetFromWindowsErr(0);
+        path_error(path);
         CloseHandle(hFile);
         return NULL;
     }
@@ -6242,8 +6411,7 @@ os_utime_impl(PyObject *module, path_t *path, PyObject *times, PyObject *ns,
 #endif
 
     if (result < 0) {
-        /* see previous comment about not putting filename in error here */
-        posix_error();
+        path_error(path);
         return NULL;
     }
 
@@ -6321,7 +6489,7 @@ parse_envlist(PyObject* env, Py_ssize_t *envc_ptr)
 {
     Py_ssize_t i, pos, envc;
     PyObject *keys=NULL, *vals=NULL;
-    PyObject *key, *val, *key2, *val2, *keyval;
+    PyObject *key2, *val2, *keyval;
     EXECV_CHAR **envlist;
 
     i = PyMapping_Size(env);
@@ -6346,10 +6514,14 @@ parse_envlist(PyObject* env, Py_ssize_t *envc_ptr)
     }
 
     for (pos = 0; pos < i; pos++) {
-        key = PyList_GetItem(keys, pos);
-        val = PyList_GetItem(vals, pos);
-        if (!key || !val)
+        PyObject *key = PyList_GetItem(keys, pos);  // Borrowed ref.
+        if (key == NULL) {
             goto error;
+        }
+        PyObject *val = PyList_GetItem(vals, pos);  // Borrowed ref.
+        if (val == NULL) {
+            goto error;
+        }
 
 #if defined(HAVE_WEXECV) || defined(HAVE_WSPAWNV)
         if (!PyUnicode_FSDecoder(key, &key2))
@@ -6510,8 +6682,9 @@ os_execv_impl(PyObject *module, path_t *path, PyObject *argv)
 
     /* If we get here it's definitely an error */
 
+    posix_error();
     free_string_array(argvlist, argc);
-    return posix_error();
+    return NULL;
 }
 
 
@@ -6723,7 +6896,7 @@ parse_posix_spawn_flags(PyObject *module, const char *func_name, PyObject *setpg
             goto fail;
         }
         if (py_schedpolicy != Py_None) {
-            int schedpolicy = _PyLong_AsInt(py_schedpolicy);
+            int schedpolicy = PyLong_AsInt(py_schedpolicy);
 
             if (schedpolicy == -1 && PyErr_Occurred()) {
                 goto fail;
@@ -6815,11 +6988,12 @@ parse_file_actions(PyObject *file_actions,
                 }
                 errno = posix_spawn_file_actions_addopen(file_actionsp,
                         fd, PyBytes_AS_STRING(path), oflag, (mode_t)mode);
-                Py_DECREF(path);
                 if (errno) {
                     posix_error();
+                    Py_DECREF(path);
                     goto fail;
                 }
+                Py_DECREF(path);
                 break;
             }
             case POSIX_SPAWN_CLOSE: {
@@ -7216,12 +7390,15 @@ os_spawnv_impl(PyObject *module, int mode, path_t *path, PyObject *argv)
     _Py_END_SUPPRESS_IPH
     Py_END_ALLOW_THREADS
 
+    int saved_errno = errno;
     free_string_array(argvlist, argc);
 
-    if (spawnval == -1)
-        return posix_error();
-    else
-        return Py_BuildValue(_Py_PARSE_INTPTR, spawnval);
+    if (spawnval == -1) {
+        errno = saved_errno;
+        posix_error();
+        return NULL;
+    }
+    return Py_BuildValue(_Py_PARSE_INTPTR, spawnval);
 }
 
 /*[clinic input]
@@ -7527,12 +7704,19 @@ os_fork1_impl(PyObject *module)
 {
     pid_t pid;
 
-    if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (interp->finalizing) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "can't fork at interpreter shutdown");
+        return NULL;
+    }
+    if (!_Py_IsMainInterpreter(interp)) {
         PyErr_SetString(PyExc_RuntimeError, "fork not supported for subinterpreters");
         return NULL;
     }
     PyOS_BeforeFork();
     pid = fork1();
+    int saved_errno = errno;
     if (pid == 0) {
         /* child: this clobbers and resets the import lock. */
         PyOS_AfterFork_Child();
@@ -7541,8 +7725,10 @@ os_fork1_impl(PyObject *module)
         /* parent: release the import lock. */
         PyOS_AfterFork_Parent();
     }
-    if (pid == -1)
+    if (pid == -1) {
+        errno = saved_errno;
         return posix_error();
+    }
     return PyLong_FromPid(pid);
 }
 #endif /* HAVE_FORK1 */
@@ -7563,6 +7749,11 @@ os_fork_impl(PyObject *module)
 {
     pid_t pid;
     PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (interp->finalizing) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "can't fork at interpreter shutdown");
+        return NULL;
+    }
     if (!_PyInterpreterState_HasFeature(interp, Py_RTFLAGS_FORK)) {
         PyErr_SetString(PyExc_RuntimeError,
                         "fork not supported for isolated subinterpreters");
@@ -7573,6 +7764,7 @@ os_fork_impl(PyObject *module)
     }
     PyOS_BeforeFork();
     pid = fork();
+    int saved_errno = errno;
     if (pid == 0) {
         /* child: this clobbers and resets the import lock. */
         PyOS_AfterFork_Child();
@@ -7581,8 +7773,10 @@ os_fork_impl(PyObject *module)
         /* parent: release the import lock. */
         PyOS_AfterFork_Parent();
     }
-    if (pid == -1)
+    if (pid == -1) {
+        errno = saved_errno;
         return posix_error();
+    }
     return PyLong_FromPid(pid);
 }
 #endif /* HAVE_FORK */
@@ -7985,39 +8179,45 @@ static PyObject *
 os_sched_getaffinity_impl(PyObject *module, pid_t pid)
 /*[clinic end generated code: output=f726f2c193c17a4f input=983ce7cb4a565980]*/
 {
-    int cpu, ncpus, count;
+    int ncpus = NCPUS_START;
     size_t setsize;
-    cpu_set_t *mask = NULL;
-    PyObject *res = NULL;
+    cpu_set_t *mask;
 
-    ncpus = NCPUS_START;
     while (1) {
         setsize = CPU_ALLOC_SIZE(ncpus);
         mask = CPU_ALLOC(ncpus);
-        if (mask == NULL)
+        if (mask == NULL) {
             return PyErr_NoMemory();
-        if (sched_getaffinity(pid, setsize, mask) == 0)
+        }
+        if (sched_getaffinity(pid, setsize, mask) == 0) {
             break;
+        }
         CPU_FREE(mask);
-        if (errno != EINVAL)
+        if (errno != EINVAL) {
             return posix_error();
+        }
         if (ncpus > INT_MAX / 2) {
-            PyErr_SetString(PyExc_OverflowError, "could not allocate "
-                            "a large enough CPU set");
+            PyErr_SetString(PyExc_OverflowError,
+                            "could not allocate a large enough CPU set");
             return NULL;
         }
-        ncpus = ncpus * 2;
+        ncpus *= 2;
     }
 
-    res = PySet_New(NULL);
-    if (res == NULL)
+    PyObject *res = PySet_New(NULL);
+    if (res == NULL) {
         goto error;
-    for (cpu = 0, count = CPU_COUNT_S(setsize, mask); count; cpu++) {
+    }
+
+    int cpu = 0;
+    int count = CPU_COUNT_S(setsize, mask);
+    for (; count; cpu++) {
         if (CPU_ISSET_S(cpu, setsize, mask)) {
             PyObject *cpu_num = PyLong_FromLong(cpu);
             --count;
-            if (cpu_num == NULL)
+            if (cpu_num == NULL) {
                 goto error;
+            }
             if (PySet_Add(res, cpu_num)) {
                 Py_DECREF(cpu_num);
                 goto error;
@@ -8029,12 +8229,12 @@ os_sched_getaffinity_impl(PyObject *module, pid_t pid)
     return res;
 
 error:
-    if (mask)
+    if (mask) {
         CPU_FREE(mask);
+    }
     Py_XDECREF(res);
     return NULL;
 }
-
 #endif /* HAVE_SCHED_SETAFFINITY */
 
 #endif /* HAVE_SCHED_H */
@@ -8119,13 +8319,17 @@ os_openpty_impl(PyObject *module)
 
     /* change permission of slave */
     if (grantpt(master_fd) < 0) {
+        int saved_errno = errno;
         PyOS_setsig(SIGCHLD, sig_saved);
+        errno = saved_errno;
         goto posix_error;
     }
 
     /* unlock slave */
     if (unlockpt(master_fd) < 0) {
+        int saved_errno = errno;
         PyOS_setsig(SIGCHLD, sig_saved);
+        errno = saved_errno;
         goto posix_error;
     }
 
@@ -8234,7 +8438,13 @@ os_forkpty_impl(PyObject *module)
     int master_fd = -1;
     pid_t pid;
 
-    if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (interp->finalizing) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "can't fork at interpreter shutdown");
+        return NULL;
+    }
+    if (!_Py_IsMainInterpreter(interp)) {
         PyErr_SetString(PyExc_RuntimeError, "fork not supported for subinterpreters");
         return NULL;
     }
@@ -8483,8 +8693,9 @@ os_getgroups_impl(PyObject *module)
 
     n = getgroups(n, grouplist);
     if (n == -1) {
+        posix_error();
         PyMem_Free(grouplist);
-        return posix_error();
+        return NULL;
     }
 
     PyObject *result = PyList_New(n);
@@ -9023,6 +9234,10 @@ os_setgroups(PyObject *module, PyObject *groups)
     }
 
     gid_t *grouplist = PyMem_New(gid_t, len);
+    if (grouplist == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
     for (Py_ssize_t i = 0; i < len; i++) {
         PyObject *elem;
         elem = PySequence_GetItem(groups, i);
@@ -9047,8 +9262,9 @@ os_setgroups(PyObject *module, PyObject *groups)
     }
 
     if (setgroups(len, grouplist) < 0) {
+        posix_error();
         PyMem_Free(grouplist);
-        return posix_error();
+        return NULL;
     }
     PyMem_Free(grouplist);
     Py_RETURN_NONE;
@@ -9774,8 +9990,6 @@ os_symlink_impl(PyObject *module, path_t *src, path_t *dst,
 #endif /* HAVE_SYMLINK */
 
 
-
-
 static PyStructSequence_Field times_result_fields[] = {
     {"user",    "user time"},
     {"system",   "system time"},
@@ -9801,12 +10015,6 @@ static PyStructSequence_Desc times_result_desc = {
     5
 };
 
-#ifdef MS_WINDOWS
-#define HAVE_TIMES  /* mandatory, for the method table */
-#endif
-
-#ifdef HAVE_TIMES
-
 static PyObject *
 build_times_result(PyObject *module, double user, double system,
     double children_user, double children_system,
@@ -9852,8 +10060,8 @@ All fields are floating point numbers.
 static PyObject *
 os_times_impl(PyObject *module)
 /*[clinic end generated code: output=35f640503557d32a input=2bf9df3d6ab2e48b]*/
-#ifdef MS_WINDOWS
 {
+#ifdef MS_WINDOWS
     FILETIME create, exit, kernel, user;
     HANDLE hProc;
     hProc = GetCurrentProcess();
@@ -9871,29 +10079,248 @@ os_times_impl(PyObject *module)
         (double)0,
         (double)0,
         (double)0);
-}
 #else /* MS_WINDOWS */
-{
-    struct tms t;
-    clock_t c;
+    _posixstate *state = get_posix_state(module);
+    long ticks_per_second = state->ticks_per_second;
+
+    struct tms process;
+    clock_t elapsed;
     errno = 0;
-    c = times(&t);
-    if (c == (clock_t) -1) {
+    elapsed = times(&process);
+    if (elapsed == (clock_t) -1) {
         return posix_error();
     }
-    assert(_PyRuntime.time.ticks_per_second_initialized);
-#define ticks_per_second _PyRuntime.time.ticks_per_second
+
     return build_times_result(module,
-                         (double)t.tms_utime / ticks_per_second,
-                         (double)t.tms_stime / ticks_per_second,
-                         (double)t.tms_cutime / ticks_per_second,
-                         (double)t.tms_cstime / ticks_per_second,
-                         (double)c / ticks_per_second);
-#undef ticks_per_second
-}
+        (double)process.tms_utime / ticks_per_second,
+        (double)process.tms_stime / ticks_per_second,
+        (double)process.tms_cutime / ticks_per_second,
+        (double)process.tms_cstime / ticks_per_second,
+        (double)elapsed / ticks_per_second);
 #endif /* MS_WINDOWS */
-#endif /* HAVE_TIMES */
+}
+
+
+#if defined(HAVE_TIMERFD_CREATE)
+#define ONE_SECOND_IN_NS (1000 * 1000 * 1000)
+#define EXTRACT_NSEC(value)  (long)( ( (double)(value) - (time_t)(value) ) * 1e9)
+#define CONVERT_SEC_AND_NSEC_TO_DOUBLE(sec, nsec) ( (double)(sec) + (double)(nsec) * 1e-9 )
+
+static PyObject *
+build_itimerspec(const struct itimerspec* curr_value)
+{
+    double _value = CONVERT_SEC_AND_NSEC_TO_DOUBLE(curr_value->it_value.tv_sec,
+                                                          curr_value->it_value.tv_nsec);
+    PyObject *value = PyFloat_FromDouble(_value);
+    if (value == NULL) {
+        return NULL;
+    }
+    double _interval = CONVERT_SEC_AND_NSEC_TO_DOUBLE(curr_value->it_interval.tv_sec,
+                                                   curr_value->it_interval.tv_nsec);
+    PyObject *interval = PyFloat_FromDouble(_interval);
+    if (interval == NULL) {
+        Py_DECREF(value);
+        return NULL;
+    }
+    PyObject *tuple = PyTuple_Pack(2, value, interval);
+    Py_DECREF(interval);
+    Py_DECREF(value);
+    return tuple;
+}
+
+static PyObject *
+build_itimerspec_ns(const struct itimerspec* curr_value)
+{
+    _PyTime_t value, interval;
+    if (_PyTime_FromTimespec(&value, &curr_value->it_value) < 0) {
+        return NULL;
+    }
+    if (_PyTime_FromTimespec(&interval, &curr_value->it_interval) < 0) {
+        return NULL;
+    }
+    return Py_BuildValue("LL", value, interval);
+}
+
+/*[clinic input]
+os.timerfd_create
+
+    clockid: int
+        A valid clock ID constant as timer file descriptor.
+
+        time.CLOCK_REALTIME
+        time.CLOCK_MONOTONIC
+        time.CLOCK_BOOTTIME
+    /
+    *
+    flags: int = 0
+        0 or a bit mask of os.TFD_NONBLOCK or os.TFD_CLOEXEC.
+
+        os.TFD_NONBLOCK
+            If *TFD_NONBLOCK* is set as a flag, read doesn't blocks.
+            If *TFD_NONBLOCK* is not set as a flag, read block until the timer fires.
+
+        os.TFD_CLOEXEC
+            If *TFD_CLOEXEC* is set as a flag, enable the close-on-exec flag
+
+Create and return a timer file descriptor.
+[clinic start generated code]*/
+
+static PyObject *
+os_timerfd_create_impl(PyObject *module, int clockid, int flags)
+/*[clinic end generated code: output=1caae80fb168004a input=64b7020c5ac0b8f4]*/
+
+{
+    int fd;
+    Py_BEGIN_ALLOW_THREADS
+    flags |= TFD_CLOEXEC;  // PEP 446: always create non-inheritable FD
+    fd = timerfd_create(clockid, flags);
+    Py_END_ALLOW_THREADS
+    if (fd == -1) {
+        return PyErr_SetFromErrno(PyExc_OSError);
+    }
+    return PyLong_FromLong(fd);
+}
+
+/*[clinic input]
+os.timerfd_settime
+
+    fd: fildes
+        A timer file descriptor.
+    /
+    *
+    flags: int = 0
+        0 or a bit mask of TFD_TIMER_ABSTIME or TFD_TIMER_CANCEL_ON_SET.
+    initial: double = 0.0
+        The initial expiration time, in seconds.
+    interval: double = 0.0
+        The timer's interval, in seconds.
+
+Alter a timer file descriptor's internal timer in seconds.
+[clinic start generated code]*/
+
+static PyObject *
+os_timerfd_settime_impl(PyObject *module, int fd, int flags, double initial,
+                        double interval)
+/*[clinic end generated code: output=0dda31115317adb9 input=6c24e47e7a4d799e]*/
+{
+    struct itimerspec new_value;
+    struct itimerspec old_value;
+    int result;
+    if (_PyTime_AsTimespec(_PyTime_FromSecondsDouble(initial, _PyTime_ROUND_FLOOR), &new_value.it_value) < 0) {
+        PyErr_SetString(PyExc_ValueError, "invalid initial value");
+        return NULL;
+    }
+    if (_PyTime_AsTimespec(_PyTime_FromSecondsDouble(interval, _PyTime_ROUND_FLOOR), &new_value.it_interval) < 0) {
+        PyErr_SetString(PyExc_ValueError, "invalid interval value");
+        return NULL;
+    }
+    Py_BEGIN_ALLOW_THREADS
+    result = timerfd_settime(fd, flags, &new_value, &old_value);
+    Py_END_ALLOW_THREADS
+    if (result == -1) {
+        return PyErr_SetFromErrno(PyExc_OSError);
+    }
+    return build_itimerspec(&old_value);
+}
+
+
+/*[clinic input]
+os.timerfd_settime_ns
+
+    fd: fildes
+        A timer file descriptor.
+    /
+    *
+    flags: int = 0
+        0 or a bit mask of TFD_TIMER_ABSTIME or TFD_TIMER_CANCEL_ON_SET.
+    initial: long_long = 0
+        initial expiration timing in seconds.
+    interval: long_long = 0
+        interval for the timer in seconds.
+
+Alter a timer file descriptor's internal timer in nanoseconds.
+[clinic start generated code]*/
+
+static PyObject *
+os_timerfd_settime_ns_impl(PyObject *module, int fd, int flags,
+                           long long initial, long long interval)
+/*[clinic end generated code: output=6273ec7d7b4cc0b3 input=261e105d6e42f5bc]*/
+{
+    struct itimerspec new_value;
+    struct itimerspec old_value;
+    int result;
+    if (_PyTime_AsTimespec(initial, &new_value.it_value) < 0) {
+        PyErr_SetString(PyExc_ValueError, "invalid initial value");
+        return NULL;
+    }
+    if (_PyTime_AsTimespec(interval, &new_value.it_interval) < 0) {
+        PyErr_SetString(PyExc_ValueError, "invalid interval value");
+        return NULL;
+    }
+    Py_BEGIN_ALLOW_THREADS
+    result = timerfd_settime(fd, flags, &new_value, &old_value);
+    Py_END_ALLOW_THREADS
+    if (result == -1) {
+        return PyErr_SetFromErrno(PyExc_OSError);
+    }
+    return build_itimerspec_ns(&old_value);
+}
+
+/*[clinic input]
+os.timerfd_gettime
+
+    fd: fildes
+        A timer file descriptor.
+    /
+
+Return a tuple of a timer file descriptor's (interval, next expiration) in float seconds.
+[clinic start generated code]*/
+
+static PyObject *
+os_timerfd_gettime_impl(PyObject *module, int fd)
+/*[clinic end generated code: output=ec5a94a66cfe6ab4 input=8148e3430870da1c]*/
+{
+    struct itimerspec curr_value;
+    int result;
+    Py_BEGIN_ALLOW_THREADS
+    result = timerfd_gettime(fd, &curr_value);
+    Py_END_ALLOW_THREADS
+    if (result == -1) {
+        return PyErr_SetFromErrno(PyExc_OSError);
+    }
+    return build_itimerspec(&curr_value);
+}
+
+
+/*[clinic input]
+os.timerfd_gettime_ns
+
+    fd: fildes
+        A timer file descriptor.
+    /
+
+Return a tuple of a timer file descriptor's (interval, next expiration) in nanoseconds.
+[clinic start generated code]*/
+
+static PyObject *
+os_timerfd_gettime_ns_impl(PyObject *module, int fd)
+/*[clinic end generated code: output=580633a4465f39fe input=a825443e4c6b40ac]*/
+{
+    struct itimerspec curr_value;
+    int result;
+    Py_BEGIN_ALLOW_THREADS
+    result = timerfd_gettime(fd, &curr_value);
+    Py_END_ALLOW_THREADS
+    if (result == -1) {
+        return PyErr_SetFromErrno(PyExc_OSError);
+    }
+    return build_itimerspec_ns(&curr_value);
+}
 
+#undef ONE_SECOND_IN_NS
+#undef EXTRACT_NSEC
+
+#endif  /* HAVE_TIMERFD_CREATE */
 
 #ifdef HAVE_GETSID
 /*[clinic input]
@@ -10305,19 +10732,24 @@ os_lockf_impl(PyObject *module, int fd, int command, Py_off_t length)
 os.lseek -> Py_off_t
 
     fd: int
+        An open file descriptor, as returned by os.open().
     position: Py_off_t
-    how: int
+        Position, interpreted relative to 'whence'.
+    whence as how: int
+        The relative position to seek from. Valid values are:
+        - SEEK_SET: seek from the start of the file.
+        - SEEK_CUR: seek from the current file position.
+        - SEEK_END: seek from the end of the file.
     /
 
 Set the position of a file descriptor.  Return the new position.
 
-Return the new cursor position in number of bytes
-relative to the beginning of the file.
+The return value is the number of bytes relative to the beginning of the file.
 [clinic start generated code]*/
 
 static Py_off_t
 os_lseek_impl(PyObject *module, int fd, Py_off_t position, int how)
-/*[clinic end generated code: output=971e1efb6b30bd2f input=902654ad3f96a6d3]*/
+/*[clinic end generated code: output=971e1efb6b30bd2f input=f096e754c5367504]*/
 {
     Py_off_t result;
 
@@ -10490,10 +10922,13 @@ os_readv_impl(PyObject *module, int fd, PyObject *buffers)
         Py_END_ALLOW_THREADS
     } while (n < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
 
+    int saved_errno = errno;
     iov_cleanup(iov, buf, cnt);
     if (n < 0) {
-        if (!async_err)
+        if (!async_err) {
+            errno = saved_errno;
             posix_error();
+        }
         return -1;
     }
 
@@ -10542,8 +10977,11 @@ os_pread_impl(PyObject *module, int fd, Py_ssize_t length, Py_off_t offset)
     } while (n < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
 
     if (n < 0) {
+        if (!async_err) {
+            posix_error();
+        }
         Py_DECREF(buffer);
-        return (!async_err) ? posix_error() : NULL;
+        return NULL;
     }
     if (n != length)
         _PyBytes_Resize(&buffer, n);
@@ -10640,9 +11078,11 @@ os_preadv_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset,
 
 #endif
 
+    int saved_errno = errno;
     iov_cleanup(iov, buf, cnt);
     if (n < 0) {
         if (!async_err) {
+            errno = saved_errno;
             posix_error();
         }
         return -1;
@@ -10811,32 +11251,34 @@ os_sendfile_impl(PyObject *module, int out_fd, int in_fd, PyObject *offobj,
     } while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
     _Py_END_SUPPRESS_IPH
 
+    int saved_errno = errno;
     if (sf.headers != NULL)
         iov_cleanup(sf.headers, hbuf, sf.hdr_cnt);
     if (sf.trailers != NULL)
         iov_cleanup(sf.trailers, tbuf, sf.trl_cnt);
 
     if (ret < 0) {
-        if ((errno == EAGAIN) || (errno == EBUSY)) {
+        if ((saved_errno == EAGAIN) || (saved_errno == EBUSY)) {
             if (sbytes != 0) {
                 // some data has been sent
                 goto done;
             }
-            else {
-                // no data has been sent; upper application is supposed
-                // to retry on EAGAIN or EBUSY
-                return posix_error();
-            }
+            // no data has been sent; upper application is supposed
+            // to retry on EAGAIN or EBUSY
         }
-        return (!async_err) ? posix_error() : NULL;
+        if (!async_err) {
+            errno = saved_errno;
+            posix_error();
+        }
+        return NULL;
     }
     goto done;
 
 done:
     #if !defined(HAVE_LARGEFILE_SUPPORT)
-        return Py_BuildValue("l", sbytes);
+        return PyLong_FromLong(sbytes);
     #else
-        return Py_BuildValue("L", sbytes);
+        return PyLong_FromLongLong(sbytes);
     #endif
 
 #else
@@ -10849,7 +11291,7 @@ os_sendfile_impl(PyObject *module, int out_fd, int in_fd, PyObject *offobj,
         } while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
         if (ret < 0)
             return (!async_err) ? posix_error() : NULL;
-        return Py_BuildValue("n", ret);
+        return PyLong_FromSsize_t(ret);
     }
 #endif
     off_t offset;
@@ -10870,7 +11312,7 @@ os_sendfile_impl(PyObject *module, int out_fd, int in_fd, PyObject *offobj,
         return (!async_err) ? posix_error() : NULL;
 
     if (offset >= st.st_size) {
-        return Py_BuildValue("i", 0);
+        return PyLong_FromLong(0);
     }
 
     // On illumos specifically sendfile() may perform a partial write but
@@ -10896,7 +11338,7 @@ os_sendfile_impl(PyObject *module, int out_fd, int in_fd, PyObject *offobj,
     } while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
     if (ret < 0)
         return (!async_err) ? posix_error() : NULL;
-    return Py_BuildValue("n", ret);
+    return PyLong_FromSsize_t(ret);
 #endif
 }
 #endif /* HAVE_SENDFILE */
@@ -11145,10 +11587,10 @@ os_writev_impl(PyObject *module, int fd, PyObject *buffers)
         Py_END_ALLOW_THREADS
     } while (result < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
 
-    iov_cleanup(iov, buf, cnt);
     if (result < 0 && !async_err)
         posix_error();
 
+    iov_cleanup(iov, buf, cnt);
     return result;
 }
 #endif /* HAVE_WRITEV */
@@ -11166,13 +11608,13 @@ os.pwrite -> Py_ssize_t
 Write bytes to a file descriptor starting at a particular offset.
 
 Write buffer to fd, starting at offset bytes from the beginning of
-the file.  Returns the number of bytes writte.  Does not change the
+the file.  Returns the number of bytes written.  Does not change the
 current file offset.
 [clinic start generated code]*/
 
 static Py_ssize_t
 os_pwrite_impl(PyObject *module, int fd, Py_buffer *buffer, Py_off_t offset)
-/*[clinic end generated code: output=c74da630758ee925 input=19903f1b3dd26377]*/
+/*[clinic end generated code: output=c74da630758ee925 input=614acbc7e5a0339a]*/
 {
     Py_ssize_t size;
     int async_err = 0;
@@ -11283,13 +11725,13 @@ os_pwritev_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset,
 
 #endif
 
-    iov_cleanup(iov, buf, cnt);
     if (result < 0) {
         if (!async_err) {
             posix_error();
         }
-        return -1;
+        result = -1;
     }
+    iov_cleanup(iov, buf, cnt);
 
     return result;
 }
@@ -11717,7 +12159,10 @@ os_truncate_impl(PyObject *module, path_t *path, Py_off_t length)
 #endif
 
 
-#if defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG)
+/* GH-111804: Due to posix_fallocate() not having consistent semantics across
+   OSs, support was dropped in WASI preview2. */
+#if defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG) && \
+    !defined(__wasi__)
 /*[clinic input]
 os.posix_fallocate
 
@@ -11755,7 +12200,7 @@ os_posix_fallocate_impl(PyObject *module, int fd, Py_off_t offset,
     errno = result;
     return posix_error();
 }
-#endif /* HAVE_POSIX_FALLOCATE) && !POSIX_FADVISE_AIX_BUG */
+#endif /* HAVE_POSIX_FALLOCATE) && !POSIX_FADVISE_AIX_BUG && !defined(__wasi__) */
 
 
 #if defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG)
@@ -11829,7 +12274,6 @@ win32_putenv(PyObject *name, PyObject *value)
     }
 
     Py_ssize_t size;
-    /* PyUnicode_AsWideCharString() rejects embedded null characters */
     wchar_t *env = PyUnicode_AsWideCharString(unicode, &size);
     Py_DECREF(unicode);
 
@@ -11843,6 +12287,12 @@ win32_putenv(PyObject *name, PyObject *value)
         PyMem_Free(env);
         return NULL;
     }
+    if (wcslen(env) != (size_t)size) {
+        PyErr_SetString(PyExc_ValueError,
+                        "embedded null character");
+        PyMem_Free(env);
+        return NULL;
+    }
 
     /* _wputenv() and SetEnvironmentVariableW() update the environment in the
        Process Environment Block (PEB). _wputenv() also updates CRT 'environ'
@@ -11851,12 +12301,13 @@ win32_putenv(PyObject *name, PyObject *value)
        Prefer _wputenv() to be compatible with C libraries using CRT
        variables and CRT functions using these variables (ex: getenv()). */
     int err = _wputenv(env);
-    PyMem_Free(env);
 
     if (err) {
         posix_error();
+        PyMem_Free(env);
         return NULL;
     }
+    PyMem_Free(env);
 
     Py_RETURN_NONE;
 }
@@ -12360,7 +12811,7 @@ conv_confname(PyObject *arg, int *valuep, struct constdef *table,
               size_t tablesize)
 {
     if (PyLong_Check(arg)) {
-        int value = _PyLong_AsInt(arg);
+        int value = PyLong_AsInt(arg);
         if (value == -1 && PyErr_Occurred())
             return 0;
         *valuep = value;
@@ -13349,7 +13800,7 @@ setup_confname_table(struct constdef *table, size_t tablesize,
         }
         Py_DECREF(o);
     }
-    return PyModule_AddObject(module, tablename, d);
+    return PyModule_Add(module, tablename, d);
 }
 
 /* Return -1 on failure, 0 on success. */
@@ -13474,9 +13925,9 @@ the underlying Win32 ShellExecute function doesn't work if it is.
 
 static PyObject *
 os_startfile_impl(PyObject *module, path_t *filepath,
-                  const Py_UNICODE *operation, const Py_UNICODE *arguments,
+                  const wchar_t *operation, const wchar_t *arguments,
                   path_t *cwd, int show_cmd)
-/*[clinic end generated code: output=3baa4f9795841880 input=8248997b80669622]*/
+/*[clinic end generated code: output=1c6f2f3340e31ffa input=8248997b80669622]*/
 {
     HINSTANCE rc;
 
@@ -13698,10 +14149,12 @@ os_getxattr_impl(PyObject *module, path_t *path, path_t *attribute,
         Py_END_ALLOW_THREADS;
 
         if (result < 0) {
-            Py_DECREF(buffer);
-            if (errno == ERANGE)
+            if (errno == ERANGE) {
+                Py_DECREF(buffer);
                 continue;
+            }
             path_error(path);
+            Py_DECREF(buffer);
             return NULL;
         }
 
@@ -14147,48 +14600,57 @@ os_get_terminal_size_impl(PyObject *module, int fd)
 }
 #endif /* defined(TERMSIZE_USE_CONIO) || defined(TERMSIZE_USE_IOCTL) */
 
-
 /*[clinic input]
 os.cpu_count
 
-Return the number of CPUs in the system; return None if indeterminable.
+Return the number of logical CPUs in the system.
 
-This number is not equivalent to the number of CPUs the current process can
-use.  The number of usable CPUs can be obtained with
-``len(os.sched_getaffinity(0))``
+Return None if indeterminable.
 [clinic start generated code]*/
 
 static PyObject *
 os_cpu_count_impl(PyObject *module)
-/*[clinic end generated code: output=5fc29463c3936a9c input=e7c8f4ba6dbbadd3]*/
+/*[clinic end generated code: output=5fc29463c3936a9c input=ba2f6f8980a0e2eb]*/
 {
+    const PyConfig *config = _Py_GetConfig();
+    if (config->cpu_count > 0) {
+        return PyLong_FromLong(config->cpu_count);
+    }
+
     int ncpu = 0;
 #ifdef MS_WINDOWS
-#ifdef MS_WINDOWS_DESKTOP
+# ifdef MS_WINDOWS_DESKTOP
     ncpu = GetActiveProcessorCount(ALL_PROCESSOR_GROUPS);
-#endif
+# else
+    ncpu = 0;
+# endif
+
 #elif defined(__hpux)
     ncpu = mpctl(MPC_GETNUMSPUS, NULL, NULL);
+
 #elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
     ncpu = sysconf(_SC_NPROCESSORS_ONLN);
+
 #elif defined(__VXWORKS__)
     ncpu = _Py_popcount32(vxCpuEnabledGet());
+
 #elif defined(__DragonFly__) || \
       defined(__OpenBSD__)   || \
       defined(__FreeBSD__)   || \
       defined(__NetBSD__)    || \
       defined(__APPLE__)
-    int mib[2];
+    ncpu = 0;
     size_t len = sizeof(ncpu);
-    mib[0] = CTL_HW;
-    mib[1] = HW_NCPU;
-    if (sysctl(mib, 2, &ncpu, &len, NULL, 0) != 0)
+    int mib[2] = {CTL_HW, HW_NCPU};
+    if (sysctl(mib, 2, &ncpu, &len, NULL, 0) != 0) {
         ncpu = 0;
+    }
 #endif
-    if (ncpu >= 1)
-        return PyLong_FromLong(ncpu);
-    else
+
+    if (ncpu < 1) {
         Py_RETURN_NONE;
+    }
+    return PyLong_FromLong(ncpu);
 }
 
 
@@ -14351,6 +14813,7 @@ typedef struct {
 #ifdef MS_WINDOWS
     struct _Py_stat_struct win32_lstat;
     uint64_t win32_file_index;
+    uint64_t win32_file_index_high;
     int got_file_index;
 #else /* POSIX */
 #ifdef HAVE_DIRENT_D_TYPE
@@ -14407,15 +14870,13 @@ os_DirEntry_is_symlink_impl(DirEntry *self, PyTypeObject *defining_class)
 
 /*[clinic input]
 os.DirEntry.is_junction -> bool
-    defining_class: defining_class
-    /
 
 Return True if the entry is a junction; cached per entry.
 [clinic start generated code]*/
 
 static int
-os_DirEntry_is_junction_impl(DirEntry *self, PyTypeObject *defining_class)
-/*[clinic end generated code: output=7061a07b0ef2cd1f input=475cd36fb7d4723f]*/
+os_DirEntry_is_junction_impl(DirEntry *self)
+/*[clinic end generated code: output=97f64d5d99eeccb5 input=4fc8e701eea118a1]*/
 {
 #ifdef MS_WINDOWS
     return self->win32_lstat.st_reparse_tag == IO_REPARSE_TAG_MOUNT_POINT;
@@ -14468,14 +14929,19 @@ DirEntry_fetch_stat(PyObject *module, DirEntry *self, int follow_symlinks)
         }
         Py_END_ALLOW_THREADS
     }
+
+    int saved_errno = errno;
 #if defined(MS_WINDOWS)
     PyMem_Free(path);
 #else
     Py_DECREF(ub);
 #endif
 
-    if (result != 0)
-        return path_object_error(self->path);
+    if (result != 0) {
+        errno = saved_errno;
+        path_object_error(self->path);
+        return NULL;
+    }
 
     return _pystat_fromstructstat(module, &st);
 }
@@ -14667,17 +15133,20 @@ os_DirEntry_inode_impl(DirEntry *self)
         wchar_t *path = PyUnicode_AsWideCharString(unicode, NULL);
         Py_DECREF(unicode);
         result = LSTAT(path, &stat);
+
+        int saved_errno = errno;
         PyMem_Free(path);
 
-        if (result != 0)
+        if (result != 0) {
+            errno = saved_errno;
             return path_object_error(self->path);
+        }
 
         self->win32_file_index = stat.st_ino;
+        self->win32_file_index_high = stat.st_ino_high;
         self->got_file_index = 1;
     }
-    static_assert(sizeof(unsigned long long) >= sizeof(self->win32_file_index),
-                  "DirEntry.win32_file_index is larger than unsigned long long");
-    return PyLong_FromUnsignedLongLong(self->win32_file_index);
+    return _pystat_l128_from_l64_l64(self->win32_file_index, self->win32_file_index_high);
 #else /* POSIX */
     static_assert(sizeof(unsigned long long) >= sizeof(self->d_ino),
                   "DirEntry.d_ino is larger than unsigned long long");
@@ -14705,9 +15174,9 @@ os_DirEntry___fspath___impl(DirEntry *self)
 }
 
 static PyMemberDef DirEntry_members[] = {
-    {"name", T_OBJECT_EX, offsetof(DirEntry, name), READONLY,
+    {"name", Py_T_OBJECT_EX, offsetof(DirEntry, name), Py_READONLY,
      "the entry's base filename, relative to scandir() \"path\" argument"},
-    {"path", T_OBJECT_EX, offsetof(DirEntry, path), READONLY,
+    {"path", Py_T_OBJECT_EX, offsetof(DirEntry, path), Py_READONLY,
      "the entry's full path name; equivalent to os.path.join(scandir_path, entry.name)"},
     {NULL}
 };
@@ -15234,12 +15703,12 @@ os_scandir_impl(PyObject *module, path_t *path)
     iterator->handle = FindFirstFileW(path_strW, &iterator->file_data);
     Py_END_ALLOW_THREADS
 
-    PyMem_Free(path_strW);
-
     if (iterator->handle == INVALID_HANDLE_VALUE) {
         path_error(&iterator->path);
+        PyMem_Free(path_strW);
         goto error;
     }
+    PyMem_Free(path_strW);
 #else /* POSIX */
     errno = 0;
 #ifdef HAVE_FDOPENDIR
@@ -15312,7 +15781,7 @@ PyOS_FSPath(PyObject *path)
     }
 
     func = _PyObject_LookupSpecial(path, &_Py_ID(__fspath__));
-    if (NULL == func) {
+    if ((NULL == func) || (func == Py_None)) {
         return PyErr_Format(PyExc_TypeError,
                             "expected str, bytes or os.PathLike object, "
                             "not %.200s",
@@ -15544,7 +16013,7 @@ os_waitstatus_to_exitcode_impl(PyObject *module, PyObject *status_obj)
 /*[clinic end generated code: output=db50b1b0ba3c7153 input=7fe2d7fdaea3db42]*/
 {
 #ifndef MS_WINDOWS
-    int status = _PyLong_AsInt(status_obj);
+    int status = PyLong_AsInt(status_obj);
     if (status == -1 && PyErr_Occurred()) {
         return NULL;
     }
@@ -15604,6 +16073,26 @@ os_waitstatus_to_exitcode_impl(PyObject *module, PyObject *status_obj)
 }
 #endif
 
+#if defined(MS_WINDOWS)
+/*[clinic input]
+os._supports_virtual_terminal
+
+Checks if virtual terminal is supported in windows
+[clinic start generated code]*/
+
+static PyObject *
+os__supports_virtual_terminal_impl(PyObject *module)
+/*[clinic end generated code: output=bd0556a6d9d99fe6 input=0752c98e5d321542]*/
+{
+    DWORD mode = 0;
+    HANDLE handle = GetStdHandle(STD_ERROR_HANDLE);
+    if (!GetConsoleMode(handle, &mode)) {
+        Py_RETURN_FALSE;
+    }
+    return PyBool_FromLong(mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING);
+}
+#endif
+
 
 static PyMethodDef posix_methods[] = {
 
@@ -15761,6 +16250,7 @@ static PyMethodDef posix_methods[] = {
     OS__GETFULLPATHNAME_METHODDEF
     OS__GETDISKUSAGE_METHODDEF
     OS__GETFINALPATHNAME_METHODDEF
+    OS__FINDFIRSTFILE_METHODDEF
     OS__GETVOLUMEPATHNAME_METHODDEF
     OS__PATH_SPLITROOT_METHODDEF
     OS__PATH_NORMPATH_METHODDEF
@@ -15796,11 +16286,19 @@ static PyMethodDef posix_methods[] = {
     OS_WAITSTATUS_TO_EXITCODE_METHODDEF
     OS_SETNS_METHODDEF
     OS_UNSHARE_METHODDEF
+    OS_TIMERFD_CREATE_METHODDEF
+    OS_TIMERFD_SETTIME_METHODDEF
+    OS_TIMERFD_SETTIME_NS_METHODDEF
+    OS_TIMERFD_GETTIME_METHODDEF
+    OS_TIMERFD_GETTIME_NS_METHODDEF
 
+    OS__PATH_ISDEVDRIVE_METHODDEF
     OS__PATH_ISDIR_METHODDEF
     OS__PATH_ISFILE_METHODDEF
     OS__PATH_ISLINK_METHODDEF
     OS__PATH_EXISTS_METHODDEF
+
+    OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
     {NULL,              NULL}            /* Sentinel */
 };
 
@@ -15917,6 +16415,18 @@ all_ins(PyObject *m)
 #ifdef PRIO_USER
     if (PyModule_AddIntMacro(m, PRIO_USER)) return -1;
 #endif
+#ifdef PRIO_DARWIN_THREAD
+    if (PyModule_AddIntMacro(m, PRIO_DARWIN_THREAD)) return -1;
+#endif
+#ifdef PRIO_DARWIN_PROCESS
+    if (PyModule_AddIntMacro(m, PRIO_DARWIN_PROCESS)) return -1;
+#endif
+#ifdef PRIO_DARWIN_BG
+    if (PyModule_AddIntMacro(m, PRIO_DARWIN_BG)) return -1;
+#endif
+#ifdef PRIO_DARWIN_NONUI
+    if (PyModule_AddIntMacro(m, PRIO_DARWIN_NONUI)) return -1;
+#endif
 #ifdef O_CLOEXEC
     if (PyModule_AddIntMacro(m, O_CLOEXEC)) return -1;
 #endif
@@ -16098,6 +16608,19 @@ all_ins(PyObject *m)
     if (PyModule_AddIntMacro(m, SF_NOCACHE)) return -1;
 #endif
 
+#ifdef TFD_NONBLOCK
+    if (PyModule_AddIntMacro(m, TFD_NONBLOCK)) return -1;
+#endif
+#ifdef TFD_CLOEXEC
+    if (PyModule_AddIntMacro(m, TFD_CLOEXEC)) return -1;
+#endif
+#ifdef TFD_TIMER_ABSTIME
+    if (PyModule_AddIntMacro(m, TFD_TIMER_ABSTIME)) return -1;
+#endif
+#ifdef TFD_TIMER_CANCEL_ON_SET
+    if (PyModule_AddIntMacro(m, TFD_TIMER_CANCEL_ON_SET)) return -1;
+#endif
+
     /* constants for posix_fadvise */
 #ifdef POSIX_FADV_NORMAL
     if (PyModule_AddIntMacro(m, POSIX_FADV_NORMAL)) return -1;
@@ -16496,6 +17019,10 @@ static const struct have_function {
     {"HAVE_EVENTFD", NULL},
 #endif
 
+#ifdef HAVE_TIMERFD_CREATE
+    {"HAVE_TIMERFD_CREATE", NULL},
+#endif
+
 #ifdef HAVE_FACCESSAT
     { "HAVE_FACCESSAT", probe_faccessat },
 #endif
@@ -16651,11 +17178,9 @@ posixmodule_exec(PyObject *m)
 #endif
 
     /* Initialize environ dictionary */
-    PyObject *v = convertenviron();
-    Py_XINCREF(v);
-    if (v == NULL || PyModule_AddObject(m, "environ", v) != 0)
+    if (PyModule_Add(m, "environ", convertenviron()) != 0) {
         return -1;
-    Py_DECREF(v);
+    }
 
     if (all_ins(m))
         return -1;
@@ -16663,57 +17188,49 @@ posixmodule_exec(PyObject *m)
     if (setup_confname_tables(m))
         return -1;
 
-    PyModule_AddObject(m, "error", Py_NewRef(PyExc_OSError));
+    if (PyModule_AddObjectRef(m, "error", PyExc_OSError) < 0) {
+        return -1;
+    }
 
 #if defined(HAVE_WAITID) && !defined(__APPLE__)
     waitid_result_desc.name = MODNAME ".waitid_result";
-    PyObject *WaitidResultType = (PyObject *)PyStructSequence_NewType(&waitid_result_desc);
-    if (WaitidResultType == NULL) {
+    state->WaitidResultType = (PyObject *)PyStructSequence_NewType(&waitid_result_desc);
+    if (PyModule_AddObjectRef(m, "waitid_result", state->WaitidResultType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "waitid_result", Py_NewRef(WaitidResultType));
-    state->WaitidResultType = WaitidResultType;
 #endif
 
     stat_result_desc.name = "os.stat_result"; /* see issue #19209 */
     stat_result_desc.fields[7].name = PyStructSequence_UnnamedField;
     stat_result_desc.fields[8].name = PyStructSequence_UnnamedField;
     stat_result_desc.fields[9].name = PyStructSequence_UnnamedField;
-    PyObject *StatResultType = (PyObject *)PyStructSequence_NewType(&stat_result_desc);
-    if (StatResultType == NULL) {
+    state->StatResultType = (PyObject *)PyStructSequence_NewType(&stat_result_desc);
+    if (PyModule_AddObjectRef(m, "stat_result", state->StatResultType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "stat_result", Py_NewRef(StatResultType));
-    state->StatResultType = StatResultType;
-    state->statresult_new_orig = ((PyTypeObject *)StatResultType)->tp_new;
-    ((PyTypeObject *)StatResultType)->tp_new = statresult_new;
+    state->statresult_new_orig = ((PyTypeObject *)state->StatResultType)->tp_new;
+    ((PyTypeObject *)state->StatResultType)->tp_new = statresult_new;
 
     statvfs_result_desc.name = "os.statvfs_result"; /* see issue #19209 */
-    PyObject *StatVFSResultType = (PyObject *)PyStructSequence_NewType(&statvfs_result_desc);
-    if (StatVFSResultType == NULL) {
+    state->StatVFSResultType = (PyObject *)PyStructSequence_NewType(&statvfs_result_desc);
+    if (PyModule_AddObjectRef(m, "statvfs_result", state->StatVFSResultType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "statvfs_result", Py_NewRef(StatVFSResultType));
-    state->StatVFSResultType = StatVFSResultType;
 
 #if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
     sched_param_desc.name = MODNAME ".sched_param";
-    PyObject *SchedParamType = (PyObject *)PyStructSequence_NewType(&sched_param_desc);
-    if (SchedParamType == NULL) {
+    state->SchedParamType = (PyObject *)PyStructSequence_NewType(&sched_param_desc);
+    if (PyModule_AddObjectRef(m, "sched_param", state->SchedParamType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "sched_param", Py_NewRef(SchedParamType));
-    state->SchedParamType = SchedParamType;
-    ((PyTypeObject *)SchedParamType)->tp_new = os_sched_param;
+    ((PyTypeObject *)state->SchedParamType)->tp_new = os_sched_param;
 #endif
 
     /* initialize TerminalSize_info */
-    PyObject *TerminalSizeType = (PyObject *)PyStructSequence_NewType(&TerminalSize_desc);
-    if (TerminalSizeType == NULL) {
+    state->TerminalSizeType = (PyObject *)PyStructSequence_NewType(&TerminalSize_desc);
+    if (PyModule_AddObjectRef(m, "terminal_size", state->TerminalSizeType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "terminal_size", Py_NewRef(TerminalSizeType));
-    state->TerminalSizeType = TerminalSizeType;
 
     /* initialize scandir types */
     PyObject *ScandirIteratorType = PyType_FromModuleAndSpec(m, &ScandirIteratorType_spec, NULL);
@@ -16722,28 +17239,21 @@ posixmodule_exec(PyObject *m)
     }
     state->ScandirIteratorType = ScandirIteratorType;
 
-    PyObject *DirEntryType = PyType_FromModuleAndSpec(m, &DirEntryType_spec, NULL);
-    if (DirEntryType == NULL) {
+    state->DirEntryType = PyType_FromModuleAndSpec(m, &DirEntryType_spec, NULL);
+    if (PyModule_AddObjectRef(m, "DirEntry", state->DirEntryType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "DirEntry", Py_NewRef(DirEntryType));
-    state->DirEntryType = DirEntryType;
 
     times_result_desc.name = MODNAME ".times_result";
-    PyObject *TimesResultType = (PyObject *)PyStructSequence_NewType(&times_result_desc);
-    if (TimesResultType == NULL) {
+    state->TimesResultType = (PyObject *)PyStructSequence_NewType(&times_result_desc);
+    if (PyModule_AddObjectRef(m, "times_result", state->TimesResultType) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "times_result", Py_NewRef(TimesResultType));
-    state->TimesResultType = TimesResultType;
 
-    PyTypeObject *UnameResultType = PyStructSequence_NewType(&uname_result_desc);
-    if (UnameResultType == NULL) {
+    state->UnameResultType = (PyObject *)PyStructSequence_NewType(&uname_result_desc);
+    if (PyModule_AddObjectRef(m, "uname_result", state->UnameResultType) < 0) {
         return -1;
     }
-    ;
-    PyModule_AddObject(m, "uname_result", Py_NewRef(UnameResultType));
-    state->UnameResultType = (PyObject *)UnameResultType;
 
     if ((state->billion = PyLong_FromLong(1000000000)) == NULL)
         return -1;
@@ -16785,9 +17295,16 @@ posixmodule_exec(PyObject *m)
         Py_DECREF(unicode);
     }
 
-    PyModule_AddObject(m, "_have_functions", list);
+#ifndef MS_WINDOWS
+    if (_Py_GetTicksPerSecond(&state->ticks_per_second) < 0) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "cannot read ticks_per_second");
+        return -1;
+    }
+    assert(state->ticks_per_second >= 1);
+#endif
 
-    return 0;
+    return PyModule_Add(m, "_have_functions", list);
 }
 
 
@@ -16814,7 +17331,3 @@ INITFUNC(void)
 {
     return PyModuleDef_Init(&posixmodule);
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Modules/posixmodule.h b/Modules/posixmodule.h
index 5452ffbf17acfc..8827ce153fed8c 100644
--- a/Modules/posixmodule.h
+++ b/Modules/posixmodule.h
@@ -2,31 +2,37 @@
 
 #ifndef Py_POSIXMODULE_H
 #define Py_POSIXMODULE_H
+#ifndef Py_LIMITED_API
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
+#  include <sys/types.h>          // uid_t
 #endif
 
-#ifndef Py_LIMITED_API
 #ifndef MS_WINDOWS
-PyAPI_FUNC(PyObject *) _PyLong_FromUid(uid_t);
-PyAPI_FUNC(PyObject *) _PyLong_FromGid(gid_t);
+extern PyObject* _PyLong_FromUid(uid_t);
+
+// Export for 'grp' shared extension
+PyAPI_FUNC(PyObject*) _PyLong_FromGid(gid_t);
+
+// Export for '_posixsubprocess' shared extension
 PyAPI_FUNC(int) _Py_Uid_Converter(PyObject *, uid_t *);
+
+// Export for 'grp' shared extension
 PyAPI_FUNC(int) _Py_Gid_Converter(PyObject *, gid_t *);
-#endif /* MS_WINDOWS */
+#endif   // !MS_WINDOWS
 
-#if defined(PYPTHREAD_SIGMASK) || defined(HAVE_SIGWAIT) || \
-        defined(HAVE_SIGWAITINFO) || defined(HAVE_SIGTIMEDWAIT)
-# define HAVE_SIGSET_T
+#if (defined(PYPTHREAD_SIGMASK) || defined(HAVE_SIGWAIT) \
+     || defined(HAVE_SIGWAITINFO) || defined(HAVE_SIGTIMEDWAIT))
+#  define HAVE_SIGSET_T
 #endif
 
-PyAPI_FUNC(int) _Py_Sigset_Converter(PyObject *, void *);
-#endif /* Py_LIMITED_API */
+extern int _Py_Sigset_Converter(PyObject *, void *);
 
 #ifdef __cplusplus
 }
 #endif
-#endif /* !Py_POSIXMODULE_H */
+#endif   // !Py_LIMITED_API
+#endif   // !Py_POSIXMODULE_H
diff --git a/Modules/pwdmodule.c b/Modules/pwdmodule.c
index cc2e2a43893971..b7034369c4731e 100644
--- a/Modules/pwdmodule.c
+++ b/Modules/pwdmodule.c
@@ -4,7 +4,8 @@
 #include "Python.h"
 #include "posixmodule.h"
 
-#include <pwd.h>
+#include <pwd.h>                  // getpwuid()
+#include <unistd.h>               // sysconf()
 
 #include "clinic/pwdmodule.c.h"
 /*[clinic input]
diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index c0fbd4d39f0096..9d95309dbb7aa6 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1,9 +1,14 @@
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
-#include <ctype.h>
+#include "pycore_import.h"        // _PyImport_SetModule()
+#include "pycore_pyhash.h"        // _Py_HashSecret
+#include "pycore_traceback.h"     // _PyTraceback_Add()
 
-#include "structmember.h"         // PyMemberDef
+#include <stddef.h>               // offsetof()
 #include "expat.h"
-
 #include "pyexpat.h"
 
 /* Do not emit Clinic output to a file as that wreaks havoc with conditionally
@@ -235,19 +240,12 @@ string_intern(xmlparseobject *self, const char* str)
         return result;
     if (!self->intern)
         return result;
-    value = PyDict_GetItemWithError(self->intern, result);
-    if (!value) {
-        if (!PyErr_Occurred() &&
-            PyDict_SetItem(self->intern, result, result) == 0)
-        {
-            return result;
-        }
-        else {
-            Py_DECREF(result);
-            return NULL;
-        }
+    if (PyDict_GetItemRef(self->intern, result, &value) == 0 &&
+        PyDict_SetItem(self->intern, result, result) == 0)
+    {
+        return result;
     }
-    Py_INCREF(value);
+    assert((value != NULL) == !PyErr_Occurred());
     Py_DECREF(result);
     return value;
 }
@@ -827,7 +825,7 @@ pyexpat_xmlparser_ParseFile_impl(xmlparseobject *self, PyTypeObject *cls,
 
     pyexpat_state *state = PyType_GetModuleState(cls);
 
-    if (_PyObject_LookupAttr(file, state->str_read, &readmethod) < 0) {
+    if (PyObject_GetOptionalAttr(file, state->str_read, &readmethod) < 0) {
         return NULL;
     }
     if (readmethod == NULL) {
@@ -890,7 +888,7 @@ static PyObject *
 pyexpat_xmlparser_GetBase_impl(xmlparseobject *self)
 /*[clinic end generated code: output=2886cb21f9a8739a input=918d71c38009620e]*/
 {
-    return Py_BuildValue("z", XML_GetBase(self->itself));
+    return conv_string_to_unicode(XML_GetBase(self->itself));
 }
 
 /*[clinic input]
@@ -1076,13 +1074,31 @@ static struct PyMethodDef xmlparse_methods[] = {
    Make it as simple as possible.
 */
 
+static const unsigned char template_buffer[256] =
+    {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+     20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+     38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+     56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+     74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+     92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+     108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122,
+     123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137,
+     138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152,
+     153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167,
+     168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182,
+     183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197,
+     198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212,
+     213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227,
+     228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242,
+     243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255};
+
+
 static int
 PyUnknownEncodingHandler(void *encodingHandlerData,
                          const XML_Char *name,
                          XML_Encoding *info)
 {
-    static unsigned char template_buffer[256] = {0};
-    PyObject* u;
+    PyObject *u;
     int i;
     const void *data;
     int kind;
@@ -1090,13 +1106,8 @@ PyUnknownEncodingHandler(void *encodingHandlerData,
     if (PyErr_Occurred())
         return XML_STATUS_ERROR;
 
-    if (template_buffer[1] == 0) {
-        for (i = 0; i < 256; i++)
-            template_buffer[i] = i;
-    }
-
-    u = PyUnicode_Decode((char*) template_buffer, 256, name, "replace");
-    if (u == NULL || PyUnicode_READY(u)) {
+    u = PyUnicode_Decode((const char*) template_buffer, 256, name, "replace");
+    if (u == NULL) {
         Py_XDECREF(u);
         return XML_STATUS_ERROR;
     }
@@ -1452,7 +1463,7 @@ xmlparse_specified_attributes_setter(xmlparseobject *self, PyObject *v, void *cl
 }
 
 static PyMemberDef xmlparse_members[] = {
-    {"intern", T_OBJECT, offsetof(xmlparseobject, intern), READONLY, NULL},
+    {"intern", _Py_T_OBJECT, offsetof(xmlparseobject, intern), Py_READONLY, NULL},
     {NULL}
 };
 
@@ -1567,7 +1578,7 @@ static PyObject *
 pyexpat_ErrorString_impl(PyObject *module, long code)
 /*[clinic end generated code: output=2feae50d166f2174 input=cc67de010d9e62b3]*/
 {
-    return Py_BuildValue("z", XML_ErrorString((int)code));
+    return conv_string_to_unicode(XML_ErrorString((int)code));
 }
 
 /* List of methods defined in the module */
@@ -1637,8 +1648,7 @@ add_submodule(PyObject *mod, const char *fullname)
     Py_DECREF(mod_name);
 
     /* gives away the reference to the submodule */
-    if (PyModule_AddObject(mod, name, submodule) < 0) {
-        Py_DECREF(submodule);
+    if (PyModule_Add(mod, name, submodule) < 0) {
         return NULL;
     }
 
@@ -1762,14 +1772,18 @@ add_error(PyObject *errors_module, PyObject *codes_dict,
 static int
 add_errors_module(PyObject *mod)
 {
+    // add_submodule() returns a borrowed ref.
     PyObject *errors_module = add_submodule(mod, MODULE_NAME ".errors");
     if (errors_module == NULL) {
         return -1;
     }
 
     PyObject *codes_dict = PyDict_New();
+    if (codes_dict == NULL) {
+        return -1;
+    }
     PyObject *rev_codes_dict = PyDict_New();
-    if (codes_dict == NULL || rev_codes_dict == NULL) {
+    if (rev_codes_dict == NULL) {
         goto error;
     }
 
@@ -1790,17 +1804,14 @@ add_errors_module(PyObject *mod)
         goto error;
     }
 
-    if (PyModule_AddObject(errors_module, "codes", Py_NewRef(codes_dict)) < 0) {
-        Py_DECREF(codes_dict);
-        goto error;
+    if (PyModule_Add(errors_module, "codes", codes_dict) < 0) {
+        Py_DECREF(rev_codes_dict);
+        return -1;
     }
-    Py_CLEAR(codes_dict);
 
-    if (PyModule_AddObject(errors_module, "messages", Py_NewRef(rev_codes_dict)) < 0) {
-        Py_DECREF(rev_codes_dict);
-        goto error;
+    if (PyModule_Add(errors_module, "messages", rev_codes_dict) < 0) {
+        return -1;
     }
-    Py_CLEAR(rev_codes_dict);
 
     return 0;
 
@@ -1867,10 +1878,7 @@ add_features(PyObject *mod)
             goto error;
         }
     }
-    if (PyModule_AddObject(mod, "features", list) < 0) {
-        goto error;
-    }
-    return 0;
+    return PyModule_Add(mod, "features", list);
 
 error:
     Py_DECREF(list);
@@ -1939,8 +1947,7 @@ pyexpat_exec(PyObject *mod)
                                               info.major,
                                               info.minor,
                                               info.micro);
-        if (PyModule_AddObject(mod, "version_info", versionInfo) < 0) {
-            Py_DECREF(versionInfo);
+        if (PyModule_Add(mod, "version_info", versionInfo) < 0) {
             return -1;
         }
     }
@@ -2020,8 +2027,7 @@ pyexpat_exec(PyObject *mod)
         return -1;
     }
 
-    if (PyModule_AddObject(mod, "expat_CAPI", capi_object) < 0) {
-        Py_DECREF(capi_object);
+    if (PyModule_Add(mod, "expat_CAPI", capi_object) < 0) {
         return -1;
     }
 
diff --git a/Modules/readline.c b/Modules/readline.c
index fdb6356e1c84b5..e29051c37f8827 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -4,14 +4,21 @@
  * recently, it was largely rewritten by Guido van Rossum.
  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 /* Standard definitions */
 #include "Python.h"
+#include "pycore_pylifecycle.h"   // _Py_SetLocaleFromEnv()
 
-#include <errno.h>
-#include <signal.h>
-#include <stddef.h>
+#include <errno.h>                // errno
+#include <signal.h>               // SIGWINCH
 #include <stdlib.h>               // free()
-#include <sys/time.h>
+#include <string.h>               // strdup()
+#ifdef HAVE_SYS_SELECT_H
+#  include <sys/select.h>         // select()
+#endif
 
 #if defined(HAVE_SETLOCALE)
 /* GNU readline() mistakenly sets the LC_CTYPE locale.
@@ -19,7 +26,7 @@
  * We must save and restore the locale around the rl_initialize() call.
  */
 #define SAVE_LOCALE
-#include <locale.h>
+#  include <locale.h>             // setlocale()
 #endif
 
 #ifdef SAVE_LOCALE
@@ -140,8 +147,19 @@ readline_free(void *m)
 
 static PyModuleDef readlinemodule;
 
-#define readlinestate_global ((readlinestate *)PyModule_GetState(PyState_FindModule(&readlinemodule)))
-
+static inline readlinestate*
+get_hook_module_state(void)
+{
+    PyObject *mod = PyState_FindModule(&readlinemodule);
+    if (mod == NULL){
+        PyErr_Clear();
+        return NULL;
+    }
+    Py_INCREF(mod);
+    readlinestate *state = get_readline_state(mod);
+    Py_DECREF(mod);
+    return state;
+}
 
 /* Convert to/from multibyte C strings */
 
@@ -431,15 +449,16 @@ readline_set_completion_display_matches_hook_impl(PyObject *module,
                                                   PyObject *function)
 /*[clinic end generated code: output=516e5cb8db75a328 input=4f0bfd5ab0179a26]*/
 {
+    readlinestate *state = get_readline_state(module);
     PyObject *result = set_hook("completion_display_matches_hook",
-                    &readlinestate_global->completion_display_matches_hook,
+                    &state->completion_display_matches_hook,
                     function);
 #ifdef HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK
     /* We cannot set this hook globally, since it replaces the
        default completion display. */
     rl_completion_display_matches_hook =
-        readlinestate_global->completion_display_matches_hook ?
-#if defined(_RL_FUNCTION_TYPEDEF)
+        state->completion_display_matches_hook ?
+#if defined(HAVE_RL_COMPDISP_FUNC_T)
         (rl_compdisp_func_t *)on_completion_display_matches_hook : 0;
 #else
         (VFunction *)on_completion_display_matches_hook : 0;
@@ -465,7 +484,8 @@ static PyObject *
 readline_set_startup_hook_impl(PyObject *module, PyObject *function)
 /*[clinic end generated code: output=02cd0e0c4fa082ad input=7783b4334b26d16d]*/
 {
-    return set_hook("startup_hook", &readlinestate_global->startup_hook,
+    readlinestate *state = get_readline_state(module);
+    return set_hook("startup_hook", &state->startup_hook,
             function);
 }
 
@@ -490,7 +510,8 @@ static PyObject *
 readline_set_pre_input_hook_impl(PyObject *module, PyObject *function)
 /*[clinic end generated code: output=fe1a96505096f464 input=4f3eaeaf7ce1fdbe]*/
 {
-    return set_hook("pre_input_hook", &readlinestate_global->pre_input_hook,
+    readlinestate *state = get_readline_state(module);
+    return set_hook("pre_input_hook", &state->pre_input_hook,
             function);
 }
 #endif
@@ -523,7 +544,8 @@ static PyObject *
 readline_get_begidx_impl(PyObject *module)
 /*[clinic end generated code: output=362616ee8ed1b2b1 input=e083b81c8eb4bac3]*/
 {
-    return Py_NewRef(readlinestate_global->begidx);
+    readlinestate *state = get_readline_state(module);
+    return Py_NewRef(state->begidx);
 }
 
 /* Get the ending index for the scope of the tab-completion */
@@ -538,7 +560,8 @@ static PyObject *
 readline_get_endidx_impl(PyObject *module)
 /*[clinic end generated code: output=7f763350b12d7517 input=d4c7e34a625fd770]*/
 {
-    return Py_NewRef(readlinestate_global->endidx);
+    readlinestate *state = get_readline_state(module);
+    return Py_NewRef(state->endidx);
 }
 
 /* Set the tab-completion word-delimiters that readline uses */
@@ -569,6 +592,13 @@ readline_set_completer_delims(PyObject *module, PyObject *string)
     if (break_chars) {
         free(completer_word_break_characters);
         completer_word_break_characters = break_chars;
+#ifdef WITH_EDITLINE
+        rl_basic_word_break_characters = break_chars;
+#else
+        if (using_libedit_emulation) {
+            rl_basic_word_break_characters = break_chars;
+        }
+#endif
         rl_completer_word_break_characters = break_chars;
         Py_RETURN_NONE;
     }
@@ -765,7 +795,8 @@ static PyObject *
 readline_set_completer_impl(PyObject *module, PyObject *function)
 /*[clinic end generated code: output=171a2a60f81d3204 input=51e81e13118eb877]*/
 {
-    return set_hook("completer", &readlinestate_global->completer, function);
+    readlinestate *state = get_readline_state(module);
+    return set_hook("completer", &state->completer, function);
 }
 
 /*[clinic input]
@@ -778,10 +809,11 @@ static PyObject *
 readline_get_completer_impl(PyObject *module)
 /*[clinic end generated code: output=6e6bbd8226d14475 input=6457522e56d70d13]*/
 {
-    if (readlinestate_global->completer == NULL) {
+    readlinestate *state = get_readline_state(module);
+    if (state->completer == NULL) {
         Py_RETURN_NONE;
     }
-    return Py_NewRef(readlinestate_global->completer);
+    return Py_NewRef(state->completer);
 }
 
 /* Private function to get current length of history.  XXX It may be
@@ -993,7 +1025,7 @@ on_hook(PyObject *func)
         if (r == Py_None)
             result = 0;
         else {
-            result = _PyLong_AsInt(r);
+            result = PyLong_AsInt(r);
             if (result == -1 && PyErr_Occurred())
                 goto error;
         }
@@ -1012,12 +1044,17 @@ static int
 #if defined(_RL_FUNCTION_TYPEDEF)
 on_startup_hook(void)
 #else
-on_startup_hook()
+on_startup_hook(const char *Py_UNUSED(text), int Py_UNUSED(state))
 #endif
 {
     int r;
     PyGILState_STATE gilstate = PyGILState_Ensure();
-    r = on_hook(readlinestate_global->startup_hook);
+    readlinestate *state = get_hook_module_state();
+    if (state == NULL) {
+        PyGILState_Release(gilstate);
+        return -1;
+    }
+    r = on_hook(state->startup_hook);
     PyGILState_Release(gilstate);
     return r;
 }
@@ -1027,12 +1064,17 @@ static int
 #if defined(_RL_FUNCTION_TYPEDEF)
 on_pre_input_hook(void)
 #else
-on_pre_input_hook()
+on_pre_input_hook(const char *Py_UNUSED(text), int Py_UNUSED(state))
 #endif
 {
     int r;
     PyGILState_STATE gilstate = PyGILState_Ensure();
-    r = on_hook(readlinestate_global->pre_input_hook);
+    readlinestate *state = get_hook_module_state();
+    if (state == NULL) {
+        PyGILState_Release(gilstate);
+        return -1;
+    }
+    r = on_hook(state->pre_input_hook);
     PyGILState_Release(gilstate);
     return r;
 }
@@ -1049,6 +1091,11 @@ on_completion_display_matches_hook(char **matches,
     int i;
     PyObject *sub, *m=NULL, *s=NULL, *r=NULL;
     PyGILState_STATE gilstate = PyGILState_Ensure();
+    readlinestate *state = get_hook_module_state();
+    if (state == NULL) {
+        PyGILState_Release(gilstate);
+        return;
+    }
     m = PyList_New(num_matches);
     if (m == NULL)
         goto error;
@@ -1059,7 +1106,7 @@ on_completion_display_matches_hook(char **matches,
         PyList_SET_ITEM(m, i, s);
     }
     sub = decode(matches[0]);
-    r = PyObject_CallFunction(readlinestate_global->completion_display_matches_hook,
+    r = PyObject_CallFunction(state->completion_display_matches_hook,
                               "NNi", sub, m, max_length);
 
     m=NULL;
@@ -1107,12 +1154,17 @@ static char *
 on_completion(const char *text, int state)
 {
     char *result = NULL;
-    if (readlinestate_global->completer != NULL) {
+    PyGILState_STATE gilstate = PyGILState_Ensure();
+    readlinestate *module_state = get_hook_module_state();
+    if (module_state == NULL) {
+        PyGILState_Release(gilstate);
+        return NULL;
+    }
+    if (module_state->completer != NULL) {
         PyObject *r = NULL, *t;
-        PyGILState_STATE gilstate = PyGILState_Ensure();
         rl_attempted_completion_over = 1;
         t = decode(text);
-        r = PyObject_CallFunction(readlinestate_global->completer, "Ni", t, state);
+        r = PyObject_CallFunction(module_state->completer, "Ni", t, state);
         if (r == NULL)
             goto error;
         if (r == Py_None) {
@@ -1134,6 +1186,7 @@ on_completion(const char *text, int state)
         PyGILState_Release(gilstate);
         return result;
     }
+    PyGILState_Release(gilstate);
     return result;
 }
 
@@ -1149,6 +1202,7 @@ flex_complete(const char *text, int start, int end)
     size_t start_size, end_size;
     wchar_t *s;
     PyGILState_STATE gilstate = PyGILState_Ensure();
+    readlinestate *state = get_hook_module_state();
 #ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
     rl_completion_append_character ='\0';
 #endif
@@ -1176,10 +1230,12 @@ flex_complete(const char *text, int start, int end)
     end = start + (int)end_size;
 
 done:
-    Py_XDECREF(readlinestate_global->begidx);
-    Py_XDECREF(readlinestate_global->endidx);
-    readlinestate_global->begidx = PyLong_FromLong((long) start);
-    readlinestate_global->endidx = PyLong_FromLong((long) end);
+    if (state) {
+        Py_XDECREF(state->begidx);
+        Py_XDECREF(state->endidx);
+        state->begidx = PyLong_FromLong((long) start);
+        state->endidx = PyLong_FromLong((long) end);
+    }
     result = completion_matches((char *)text, *on_completion);
     PyGILState_Release(gilstate);
     return result;
@@ -1256,6 +1312,15 @@ setup_readline(readlinestate *mod_state)
     completer_word_break_characters =
         strdup(" \t\n`~!@#$%^&*()-=+[{]}\\|;:'\",<>/?");
         /* All nonalphanums except '.' */
+#ifdef WITH_EDITLINE
+    // libedit uses rl_basic_word_break_characters instead of
+    // rl_completer_word_break_characters as complete delimiter
+    rl_basic_word_break_characters = completer_word_break_characters;
+#else
+    if (using_libedit_emulation) {
+        rl_basic_word_break_characters = completer_word_break_characters;
+    }
+#endif
     rl_completer_word_break_characters = completer_word_break_characters;
 
     mod_state->begidx = PyLong_FromLong(0L);
@@ -1305,6 +1370,9 @@ rlhandler(char *text)
 static char *
 readline_until_enter_or_signal(const char *prompt, int *signal)
 {
+    // Defined in Parser/myreadline.c
+    extern PyThreadState *_PyOS_ReadlineTState;
+
     char * not_done_reading = "";
     fd_set selectset;
 
@@ -1322,7 +1390,8 @@ readline_until_enter_or_signal(const char *prompt, int *signal)
         int has_input = 0, err = 0;
 
         while (!has_input)
-        {               struct timeval timeout = {0, 100000}; /* 0.1 seconds */
+        {
+            struct timeval timeout = {0, 100000};  // 100 ms (0.1 seconds)
 
             /* [Bug #1552726] Only limit the pause if an input hook has been
                defined.  */
@@ -1465,6 +1534,7 @@ static struct PyModuleDef readlinemodule = {
 PyMODINIT_FUNC
 PyInit_readline(void)
 {
+    const char *backend = "readline";
     PyObject *m;
     readlinestate *mod_state;
 
@@ -1472,8 +1542,10 @@ PyInit_readline(void)
         using_libedit_emulation = 1;
     }
 
-    if (using_libedit_emulation)
+    if (using_libedit_emulation) {
         readlinemodule.m_doc = doc_module_le;
+        backend = "editline";
+    }
 
 
     m = PyModule_Create(&readlinemodule);
@@ -1495,13 +1567,22 @@ PyInit_readline(void)
         goto error;
     }
 
+    if (PyModule_AddStringConstant(m, "backend", backend) < 0) {
+        goto error;
+    }
+
     mod_state = (readlinestate *) PyModule_GetState(m);
+    if (mod_state == NULL){
+        goto error;
+    }
     PyOS_ReadlineFunctionPointer = call_readline;
     if (setup_readline(mod_state) < 0) {
         PyErr_NoMemory();
         goto error;
     }
-
+    if (PyErr_Occurred()){
+        goto error;
+    }
     return m;
 
 error:
diff --git a/Modules/resource.c b/Modules/resource.c
index 2a8158c9be5359..a4b8f648c329e3 100644
--- a/Modules/resource.c
+++ b/Modules/resource.c
@@ -1,10 +1,17 @@
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.13 for PySys_Audit()
+#define Py_LIMITED_API 0x030d0000
+#endif
 
 #include "Python.h"
-#include <sys/resource.h>
-#include <sys/time.h>
+#include <errno.h>                // errno
 #include <string.h>
-#include <errno.h>
-#include <unistd.h>
+#include <sys/resource.h>         // getrusage()
+#include <unistd.h>               // getpagesize()
 
 /* On some systems, these aren't in any header file.
    On others they are, with inconsistent prototypes.
@@ -25,15 +32,16 @@ class pid_t_converter(CConverter):
     type = 'pid_t'
     format_unit = '" _Py_PARSE_PID "'
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
             {paramname} = PyLong_AsPid({argname});
             if ({paramname} == -1 && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.parser_name)
+            """,
+            argname=argname)
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=5af1c116d56cbb5a]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=c94349aa1aad151d]*/
 
 #include "clinic/resource.c.h"
 
@@ -117,24 +125,24 @@ resource_getrusage_impl(PyObject *module, int who)
     if (!result)
         return NULL;
 
-    PyStructSequence_SET_ITEM(result, 0,
+    PyStructSequence_SetItem(result, 0,
                     PyFloat_FromDouble(doubletime(ru.ru_utime)));
-    PyStructSequence_SET_ITEM(result, 1,
+    PyStructSequence_SetItem(result, 1,
                     PyFloat_FromDouble(doubletime(ru.ru_stime)));
-    PyStructSequence_SET_ITEM(result, 2, PyLong_FromLong(ru.ru_maxrss));
-    PyStructSequence_SET_ITEM(result, 3, PyLong_FromLong(ru.ru_ixrss));
-    PyStructSequence_SET_ITEM(result, 4, PyLong_FromLong(ru.ru_idrss));
-    PyStructSequence_SET_ITEM(result, 5, PyLong_FromLong(ru.ru_isrss));
-    PyStructSequence_SET_ITEM(result, 6, PyLong_FromLong(ru.ru_minflt));
-    PyStructSequence_SET_ITEM(result, 7, PyLong_FromLong(ru.ru_majflt));
-    PyStructSequence_SET_ITEM(result, 8, PyLong_FromLong(ru.ru_nswap));
-    PyStructSequence_SET_ITEM(result, 9, PyLong_FromLong(ru.ru_inblock));
-    PyStructSequence_SET_ITEM(result, 10, PyLong_FromLong(ru.ru_oublock));
-    PyStructSequence_SET_ITEM(result, 11, PyLong_FromLong(ru.ru_msgsnd));
-    PyStructSequence_SET_ITEM(result, 12, PyLong_FromLong(ru.ru_msgrcv));
-    PyStructSequence_SET_ITEM(result, 13, PyLong_FromLong(ru.ru_nsignals));
-    PyStructSequence_SET_ITEM(result, 14, PyLong_FromLong(ru.ru_nvcsw));
-    PyStructSequence_SET_ITEM(result, 15, PyLong_FromLong(ru.ru_nivcsw));
+    PyStructSequence_SetItem(result, 2, PyLong_FromLong(ru.ru_maxrss));
+    PyStructSequence_SetItem(result, 3, PyLong_FromLong(ru.ru_ixrss));
+    PyStructSequence_SetItem(result, 4, PyLong_FromLong(ru.ru_idrss));
+    PyStructSequence_SetItem(result, 5, PyLong_FromLong(ru.ru_isrss));
+    PyStructSequence_SetItem(result, 6, PyLong_FromLong(ru.ru_minflt));
+    PyStructSequence_SetItem(result, 7, PyLong_FromLong(ru.ru_majflt));
+    PyStructSequence_SetItem(result, 8, PyLong_FromLong(ru.ru_nswap));
+    PyStructSequence_SetItem(result, 9, PyLong_FromLong(ru.ru_inblock));
+    PyStructSequence_SetItem(result, 10, PyLong_FromLong(ru.ru_oublock));
+    PyStructSequence_SetItem(result, 11, PyLong_FromLong(ru.ru_msgsnd));
+    PyStructSequence_SetItem(result, 12, PyLong_FromLong(ru.ru_msgrcv));
+    PyStructSequence_SetItem(result, 13, PyLong_FromLong(ru.ru_nsignals));
+    PyStructSequence_SetItem(result, 14, PyLong_FromLong(ru.ru_nvcsw));
+    PyStructSequence_SetItem(result, 15, PyLong_FromLong(ru.ru_nivcsw));
 
     if (PyErr_Occurred()) {
         Py_DECREF(result);
@@ -154,13 +162,13 @@ py2rlimit(PyObject *limits, struct rlimit *rl_out)
         /* Here limits is a borrowed reference */
         return -1;
 
-    if (PyTuple_GET_SIZE(limits) != 2) {
+    if (PyTuple_Size(limits) != 2) {
         PyErr_SetString(PyExc_ValueError,
                         "expected a tuple of 2 integers");
         goto error;
     }
-    curobj = PyTuple_GET_ITEM(limits, 0);
-    maxobj = PyTuple_GET_ITEM(limits, 1);
+    curobj = PyTuple_GetItem(limits, 0);  // borrowed
+    maxobj = PyTuple_GetItem(limits, 1);  // borrowed
 #if !defined(HAVE_LARGEFILE_SUPPORT)
     rl_out->rlim_cur = PyLong_AsLong(curobj);
     if (rl_out->rlim_cur == (rlim_t)-1 && PyErr_Occurred())
@@ -369,9 +377,7 @@ resource_exec(PyObject *module)
     } while (0)
 
     /* Add some symbolic constants to the module */
-    Py_INCREF(PyExc_OSError);
-    if (PyModule_AddObject(module, "error", PyExc_OSError) < 0) {
-        Py_DECREF(PyExc_OSError);
+    if (PyModule_AddObjectRef(module, "error", PyExc_OSError) < 0) {
         return -1;
     }
 
@@ -499,12 +505,7 @@ resource_exec(PyObject *module)
     {
         v = PyLong_FromLong((long) RLIM_INFINITY);
     }
-    if (!v) {
-        return -1;
-    }
-
-    if (PyModule_AddObject(module, "RLIM_INFINITY", v) < 0) {
-        Py_DECREF(v);
+    if (PyModule_Add(module, "RLIM_INFINITY", v) < 0) {
         return -1;
     }
     return 0;
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 79bd5b59ab68f9..1dbde3e9e6ca5d 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -14,7 +14,14 @@
 
 #include "Python.h"
 #include "pycore_fileutils.h"     // _Py_set_inheritable()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_import.h"        // _PyImport_GetModuleAttrString()
+#include "pycore_time.h"          // _PyTime_t
+
+#include <stdbool.h>
+#include <stddef.h>               // offsetof()
+#ifndef MS_WINDOWS
+#  include <unistd.h>             // close()
+#endif
 
 #ifdef HAVE_SYS_DEVPOLL_H
 #include <sys/resource.h>
@@ -70,13 +77,26 @@ extern void bzero(void *, int);
 #  define POLLPRI 0
 #endif
 
+#ifdef HAVE_KQUEUE
+// Linked list to track kqueue objects with an open fd, so
+// that we can invalidate them at fork;
+typedef struct _kqueue_list_item {
+    struct kqueue_queue_Object *obj;
+    struct _kqueue_list_item *next;
+} _kqueue_list_item, *_kqueue_list;
+#endif
+
 typedef struct {
     PyObject *close;
     PyTypeObject *poll_Type;
     PyTypeObject *devpoll_Type;
     PyTypeObject *pyEpoll_Type;
+#ifdef HAVE_KQUEUE
     PyTypeObject *kqueue_event_Type;
     PyTypeObject *kqueue_queue_Type;
+    _kqueue_list kqueue_open_list;
+    bool kqueue_tracking_initialized;
+#endif
 } _selectstate;
 
 static struct PyModuleDef selectmodule;
@@ -1292,8 +1312,8 @@ newPyEpoll_Object(PyTypeObject *type, int sizehint, SOCKET fd)
         self->epfd = fd;
     }
     if (self->epfd < 0) {
-        Py_DECREF(self);
         PyErr_SetFromErrno(PyExc_OSError);
+        Py_DECREF(self);
         return NULL;
     }
 
@@ -1749,7 +1769,7 @@ typedef struct {
 
 #define kqueue_event_Check(op, state) (PyObject_TypeCheck((op), state->kqueue_event_Type))
 
-typedef struct {
+typedef struct kqueue_queue_Object {
     PyObject_HEAD
     SOCKET kqfd;                /* kqueue control fd */
 } kqueue_queue_Object;
@@ -1757,18 +1777,18 @@ typedef struct {
 #if (SIZEOF_UINTPTR_T != SIZEOF_VOID_P)
 #   error uintptr_t does not match void *!
 #elif (SIZEOF_UINTPTR_T == SIZEOF_LONG_LONG)
-#   define T_UINTPTRT         T_ULONGLONG
-#   define T_INTPTRT          T_LONGLONG
+#   define T_UINTPTRT         Py_T_ULONGLONG
+#   define T_INTPTRT          Py_T_LONGLONG
 #   define UINTPTRT_FMT_UNIT  "K"
 #   define INTPTRT_FMT_UNIT   "L"
 #elif (SIZEOF_UINTPTR_T == SIZEOF_LONG)
-#   define T_UINTPTRT         T_ULONG
-#   define T_INTPTRT          T_LONG
+#   define T_UINTPTRT         Py_T_ULONG
+#   define T_INTPTRT          Py_T_LONG
 #   define UINTPTRT_FMT_UNIT  "k"
 #   define INTPTRT_FMT_UNIT   "l"
 #elif (SIZEOF_UINTPTR_T == SIZEOF_INT)
-#   define T_UINTPTRT         T_UINT
-#   define T_INTPTRT          T_INT
+#   define T_UINTPTRT         Py_T_UINT
+#   define T_INTPTRT          Py_T_INT
 #   define UINTPTRT_FMT_UNIT  "I"
 #   define INTPTRT_FMT_UNIT   "i"
 #else
@@ -1776,26 +1796,26 @@ typedef struct {
 #endif
 
 #if SIZEOF_LONG_LONG == 8
-#   define T_INT64          T_LONGLONG
+#   define T_INT64          Py_T_LONGLONG
 #   define INT64_FMT_UNIT   "L"
 #elif SIZEOF_LONG == 8
-#   define T_INT64          T_LONG
+#   define T_INT64          Py_T_LONG
 #   define INT64_FMT_UNIT   "l"
 #elif SIZEOF_INT == 8
-#   define T_INT64          T_INT
+#   define T_INT64          Py_T_INT
 #   define INT64_FMT_UNIT   "i"
 #else
 #   define INT64_FMT_UNIT   "_"
 #endif
 
 #if SIZEOF_LONG_LONG == 4
-#   define T_UINT32         T_ULONGLONG
+#   define T_UINT32         Py_T_ULONGLONG
 #   define UINT32_FMT_UNIT  "K"
 #elif SIZEOF_LONG == 4
-#   define T_UINT32         T_ULONG
+#   define T_UINT32         Py_T_ULONG
 #   define UINT32_FMT_UNIT  "k"
 #elif SIZEOF_INT == 4
-#   define T_UINT32         T_UINT
+#   define T_UINT32         Py_T_UINT
 #   define UINT32_FMT_UNIT  "I"
 #else
 #   define UINT32_FMT_UNIT  "_"
@@ -1812,11 +1832,11 @@ typedef struct {
 #   define FFLAGS_TYPE      T_UINT32
 #   define FFLAGS_FMT_UNIT  UINT32_FMT_UNIT
 #else
-#   define FILTER_TYPE      T_SHORT
+#   define FILTER_TYPE      Py_T_SHORT
 #   define FILTER_FMT_UNIT  "h"
-#   define FLAGS_TYPE       T_USHORT
+#   define FLAGS_TYPE       Py_T_USHORT
 #   define FLAGS_FMT_UNIT   "H"
-#   define FFLAGS_TYPE      T_UINT
+#   define FFLAGS_TYPE      Py_T_UINT
 #   define FFLAGS_FMT_UNIT  "I"
 #endif
 
@@ -1838,7 +1858,7 @@ static struct PyMemberDef kqueue_event_members[] = {
     {"ident",           T_UINTPTRT,     KQ_OFF(e.ident)},
     {"filter",          FILTER_TYPE,    KQ_OFF(e.filter)},
     {"flags",           FLAGS_TYPE,     KQ_OFF(e.flags)},
-    {"fflags",          T_UINT,         KQ_OFF(e.fflags)},
+    {"fflags",          Py_T_UINT,         KQ_OFF(e.fflags)},
     {"data",            DATA_TYPE,      KQ_OFF(e.data)},
     {"udata",           T_UINTPTRT,     KQ_OFF(e.udata)},
     {NULL} /* Sentinel */
@@ -1849,14 +1869,11 @@ static PyObject *
 
 kqueue_event_repr(kqueue_event_Object *s)
 {
-    char buf[1024];
-    PyOS_snprintf(
-        buf, sizeof(buf),
+    return PyUnicode_FromFormat(
         "<select.kevent ident=%zu filter=%d flags=0x%x fflags=0x%x "
         "data=0x%llx udata=%p>",
         (size_t)(s->e.ident), (int)s->e.filter, (unsigned int)s->e.flags,
         (unsigned int)s->e.fflags, (long long)(s->e.data), (void *)s->e.udata);
-    return PyUnicode_FromString(buf);
 }
 
 static int
@@ -1938,6 +1955,107 @@ kqueue_queue_err_closed(void)
     return NULL;
 }
 
+static PyObject*
+kqueue_tracking_after_fork(PyObject *module) {
+    _selectstate *state = get_select_state(module);
+    _kqueue_list_item *item = state->kqueue_open_list;
+    state->kqueue_open_list = NULL;
+    while (item) {
+        // Safety: we hold the GIL, and references are removed from this list
+        // before the object is deallocated.
+        kqueue_queue_Object *obj = item->obj;
+        assert(obj->kqfd != -1);
+        obj->kqfd = -1;
+        _kqueue_list_item *next = item->next;
+        PyMem_Free(item);
+        item = next;
+    }
+    Py_RETURN_NONE;
+}
+
+static PyMethodDef kqueue_tracking_after_fork_def = {
+    "kqueue_tracking_after_fork", (PyCFunction)kqueue_tracking_after_fork,
+    METH_NOARGS, "Invalidate open select.kqueue objects after fork."
+};
+
+static void
+kqueue_tracking_init(PyObject *module) {
+    _selectstate *state = get_select_state(module);
+    assert(state->kqueue_open_list == NULL);
+    // Register a callback to invalidate kqueues with open fds after fork.
+    PyObject *register_at_fork = NULL, *cb = NULL, *args = NULL,
+             *kwargs = NULL, *result = NULL;
+    register_at_fork = _PyImport_GetModuleAttrString("posix",
+                                                     "register_at_fork");
+    if (register_at_fork == NULL) {
+        goto finally;
+    }
+    cb = PyCFunction_New(&kqueue_tracking_after_fork_def, module);
+    if (cb == NULL) {
+        goto finally;
+    }
+    args = PyTuple_New(0);
+    assert(args != NULL);
+    kwargs = Py_BuildValue("{sO}", "after_in_child", cb);
+    if (kwargs == NULL) {
+        goto finally;
+    }
+    result = PyObject_Call(register_at_fork, args, kwargs);
+
+finally:
+    if (PyErr_Occurred()) {
+        // There are a few reasons registration can fail, especially if someone
+        // touched posix.register_at_fork. But everything else still works so
+        // instead of raising we issue a warning and move along.
+        PyObject *exc = PyErr_GetRaisedException();
+        PyObject *exctype = (PyObject*)Py_TYPE(exc);
+        PyErr_WarnFormat(PyExc_RuntimeWarning, 1,
+            "An exception of type %S was raised while registering an "
+            "after-fork handler for select.kqueue objects: %S", exctype, exc);
+        Py_DECREF(exc);
+    }
+    Py_XDECREF(register_at_fork);
+    Py_XDECREF(cb);
+    Py_XDECREF(args);
+    Py_XDECREF(kwargs);
+    Py_XDECREF(result);
+    state->kqueue_tracking_initialized = true;
+}
+
+static int
+kqueue_tracking_add(_selectstate *state, kqueue_queue_Object *self) {
+    if (!state->kqueue_tracking_initialized) {
+        kqueue_tracking_init(PyType_GetModule(Py_TYPE(self)));
+    }
+    assert(self->kqfd >= 0);
+    _kqueue_list_item *item = PyMem_New(_kqueue_list_item, 1);
+    if (item == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    item->obj = self;
+    item->next = state->kqueue_open_list;
+    state->kqueue_open_list = item;
+    return 0;
+}
+
+static void
+kqueue_tracking_remove(_selectstate *state, kqueue_queue_Object *self) {
+    _kqueue_list *listptr = &state->kqueue_open_list;
+    while (*listptr != NULL) {
+        _kqueue_list_item *item = *listptr;
+        if (item->obj == self) {
+            *listptr = item->next;
+            PyMem_Free(item);
+            return;
+        }
+        listptr = &item->next;
+    }
+    // The item should be in the list when we remove it,
+    // and it should only be removed once at close time.
+    assert(0);
+}
+
 static int
 kqueue_queue_internal_close(kqueue_queue_Object *self)
 {
@@ -1945,6 +2063,8 @@ kqueue_queue_internal_close(kqueue_queue_Object *self)
     if (self->kqfd >= 0) {
         int kqfd = self->kqfd;
         self->kqfd = -1;
+        _selectstate *state = _selectstate_by_type(Py_TYPE(self));
+        kqueue_tracking_remove(state, self);
         Py_BEGIN_ALLOW_THREADS
         if (close(kqfd) < 0)
             save_errno = errno;
@@ -1974,8 +2094,8 @@ newKqueue_Object(PyTypeObject *type, SOCKET fd)
         self->kqfd = fd;
     }
     if (self->kqfd < 0) {
-        Py_DECREF(self);
         PyErr_SetFromErrno(PyExc_OSError);
+        Py_DECREF(self);
         return NULL;
     }
 
@@ -1985,6 +2105,13 @@ newKqueue_Object(PyTypeObject *type, SOCKET fd)
             return NULL;
         }
     }
+
+    _selectstate *state = _selectstate_by_type(type);
+    if (kqueue_tracking_add(state, self) < 0) {
+        Py_DECREF(self);
+        return NULL;
+    }
+
     return (PyObject *)self;
 }
 
@@ -2015,13 +2142,11 @@ select_kqueue_impl(PyTypeObject *type)
 }
 
 static void
-kqueue_queue_dealloc(kqueue_queue_Object *self)
+kqueue_queue_finalize(kqueue_queue_Object *self)
 {
-    PyTypeObject* type = Py_TYPE(self);
+    PyObject* error = PyErr_GetRaisedException();
     kqueue_queue_internal_close(self);
-    freefunc kqueue_free = PyType_GetSlot(type, Py_tp_free);
-    kqueue_free((PyObject *)self);
-    Py_DECREF((PyObject *)type);
+    PyErr_SetRaisedException(error);
 }
 
 /*[clinic input]
@@ -2355,11 +2480,11 @@ static PyMethodDef kqueue_queue_methods[] = {
 };
 
 static PyType_Slot kqueue_queue_Type_slots[] = {
-    {Py_tp_dealloc, kqueue_queue_dealloc},
     {Py_tp_doc, (void*)select_kqueue__doc__},
     {Py_tp_getset, kqueue_queue_getsetlist},
     {Py_tp_methods, kqueue_queue_methods},
     {Py_tp_new, select_kqueue},
+    {Py_tp_finalize, kqueue_queue_finalize},
     {0, 0},
 };
 
@@ -2404,8 +2529,11 @@ _select_traverse(PyObject *module, visitproc visit, void *arg)
     Py_VISIT(state->poll_Type);
     Py_VISIT(state->devpoll_Type);
     Py_VISIT(state->pyEpoll_Type);
+#ifdef HAVE_KQUEUE
     Py_VISIT(state->kqueue_event_Type);
     Py_VISIT(state->kqueue_queue_Type);
+    // state->kqueue_open_list only holds borrowed refs
+#endif
     return 0;
 }
 
@@ -2418,8 +2546,10 @@ _select_clear(PyObject *module)
     Py_CLEAR(state->poll_Type);
     Py_CLEAR(state->devpoll_Type);
     Py_CLEAR(state->pyEpoll_Type);
+#ifdef HAVE_KQUEUE
     Py_CLEAR(state->kqueue_event_Type);
     Py_CLEAR(state->kqueue_queue_Type);
+#endif
     return 0;
 }
 
@@ -2442,12 +2572,18 @@ _select_exec(PyObject *m)
         return -1;
     }
 
+#define ADD_INT(VAL) do {                                 \
+    if (PyModule_AddIntConstant((m), #VAL, (VAL)) < 0) {  \
+        return -1;                                        \
+    }                                                     \
+} while (0)
+
 #ifdef PIPE_BUF
 #ifdef HAVE_BROKEN_PIPE_BUF
 #undef PIPE_BUF
 #define PIPE_BUF 512
 #endif
-    PyModule_AddIntMacro(m, PIPE_BUF);
+    ADD_INT(PIPE_BUF);
 #endif
 
 #if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
@@ -2466,31 +2602,31 @@ _select_exec(PyObject *m)
             return -1;
         }
 
-        PyModule_AddIntMacro(m, POLLIN);
-        PyModule_AddIntMacro(m, POLLPRI);
-        PyModule_AddIntMacro(m, POLLOUT);
-        PyModule_AddIntMacro(m, POLLERR);
-        PyModule_AddIntMacro(m, POLLHUP);
-        PyModule_AddIntMacro(m, POLLNVAL);
+        ADD_INT(POLLIN);
+        ADD_INT(POLLPRI);
+        ADD_INT(POLLOUT);
+        ADD_INT(POLLERR);
+        ADD_INT(POLLHUP);
+        ADD_INT(POLLNVAL);
 
 #ifdef POLLRDNORM
-        PyModule_AddIntMacro(m, POLLRDNORM);
+        ADD_INT(POLLRDNORM);
 #endif
 #ifdef POLLRDBAND
-        PyModule_AddIntMacro(m, POLLRDBAND);
+        ADD_INT(POLLRDBAND);
 #endif
 #ifdef POLLWRNORM
-        PyModule_AddIntMacro(m, POLLWRNORM);
+        ADD_INT(POLLWRNORM);
 #endif
 #ifdef POLLWRBAND
-        PyModule_AddIntMacro(m, POLLWRBAND);
+        ADD_INT(POLLWRBAND);
 #endif
 #ifdef POLLMSG
-        PyModule_AddIntMacro(m, POLLMSG);
+        ADD_INT(POLLMSG);
 #endif
 #ifdef POLLRDHUP
         /* Kernel 2.6.17+ */
-        PyModule_AddIntMacro(m, POLLRDHUP);
+        ADD_INT(POLLRDHUP);
 #endif
     }
 #endif /* HAVE_POLL */
@@ -2513,46 +2649,57 @@ _select_exec(PyObject *m)
         return -1;
     }
 
-    PyModule_AddIntMacro(m, EPOLLIN);
-    PyModule_AddIntMacro(m, EPOLLOUT);
-    PyModule_AddIntMacro(m, EPOLLPRI);
-    PyModule_AddIntMacro(m, EPOLLERR);
-    PyModule_AddIntMacro(m, EPOLLHUP);
+    ADD_INT(EPOLLIN);
+    ADD_INT(EPOLLOUT);
+    ADD_INT(EPOLLPRI);
+    ADD_INT(EPOLLERR);
+    ADD_INT(EPOLLHUP);
 #ifdef EPOLLRDHUP
     /* Kernel 2.6.17 */
-    PyModule_AddIntMacro(m, EPOLLRDHUP);
+    ADD_INT(EPOLLRDHUP);
 #endif
-    PyModule_AddIntMacro(m, EPOLLET);
+    ADD_INT(EPOLLET);
 #ifdef EPOLLONESHOT
     /* Kernel 2.6.2+ */
-    PyModule_AddIntMacro(m, EPOLLONESHOT);
+    ADD_INT(EPOLLONESHOT);
 #endif
 #ifdef EPOLLEXCLUSIVE
-    PyModule_AddIntMacro(m, EPOLLEXCLUSIVE);
+    ADD_INT(EPOLLEXCLUSIVE);
 #endif
 
 #ifdef EPOLLRDNORM
-    PyModule_AddIntMacro(m, EPOLLRDNORM);
+    ADD_INT(EPOLLRDNORM);
 #endif
 #ifdef EPOLLRDBAND
-    PyModule_AddIntMacro(m, EPOLLRDBAND);
+    ADD_INT(EPOLLRDBAND);
 #endif
 #ifdef EPOLLWRNORM
-    PyModule_AddIntMacro(m, EPOLLWRNORM);
+    ADD_INT(EPOLLWRNORM);
 #endif
 #ifdef EPOLLWRBAND
-    PyModule_AddIntMacro(m, EPOLLWRBAND);
+    ADD_INT(EPOLLWRBAND);
 #endif
 #ifdef EPOLLMSG
-    PyModule_AddIntMacro(m, EPOLLMSG);
+    ADD_INT(EPOLLMSG);
 #endif
 
 #ifdef EPOLL_CLOEXEC
-    PyModule_AddIntMacro(m, EPOLL_CLOEXEC);
+    ADD_INT(EPOLL_CLOEXEC);
 #endif
 #endif /* HAVE_EPOLL */
 
+#undef ADD_INT
+
+#define ADD_INT_CONST(NAME, VAL) \
+    do { \
+        if (PyModule_AddIntConstant(m, NAME, VAL) < 0) { \
+            return -1; \
+        } \
+    } while (0)
+
 #ifdef HAVE_KQUEUE
+    state->kqueue_open_list = NULL;
+
     state->kqueue_event_Type = (PyTypeObject *)PyType_FromModuleAndSpec(
         m, &kqueue_event_Type_spec, NULL);
     if (state->kqueue_event_Type == NULL) {
@@ -2572,80 +2719,83 @@ _select_exec(PyObject *m)
     }
 
     /* event filters */
-    PyModule_AddIntConstant(m, "KQ_FILTER_READ", EVFILT_READ);
-    PyModule_AddIntConstant(m, "KQ_FILTER_WRITE", EVFILT_WRITE);
+    ADD_INT_CONST("KQ_FILTER_READ", EVFILT_READ);
+    ADD_INT_CONST("KQ_FILTER_WRITE", EVFILT_WRITE);
 #ifdef EVFILT_AIO
-    PyModule_AddIntConstant(m, "KQ_FILTER_AIO", EVFILT_AIO);
+    ADD_INT_CONST("KQ_FILTER_AIO", EVFILT_AIO);
 #endif
 #ifdef EVFILT_VNODE
-    PyModule_AddIntConstant(m, "KQ_FILTER_VNODE", EVFILT_VNODE);
+    ADD_INT_CONST("KQ_FILTER_VNODE", EVFILT_VNODE);
 #endif
 #ifdef EVFILT_PROC
-    PyModule_AddIntConstant(m, "KQ_FILTER_PROC", EVFILT_PROC);
+    ADD_INT_CONST("KQ_FILTER_PROC", EVFILT_PROC);
 #endif
 #ifdef EVFILT_NETDEV
-    PyModule_AddIntConstant(m, "KQ_FILTER_NETDEV", EVFILT_NETDEV);
+    ADD_INT_CONST("KQ_FILTER_NETDEV", EVFILT_NETDEV);
 #endif
 #ifdef EVFILT_SIGNAL
-    PyModule_AddIntConstant(m, "KQ_FILTER_SIGNAL", EVFILT_SIGNAL);
+    ADD_INT_CONST("KQ_FILTER_SIGNAL", EVFILT_SIGNAL);
 #endif
-    PyModule_AddIntConstant(m, "KQ_FILTER_TIMER", EVFILT_TIMER);
+    ADD_INT_CONST("KQ_FILTER_TIMER", EVFILT_TIMER);
 
     /* event flags */
-    PyModule_AddIntConstant(m, "KQ_EV_ADD", EV_ADD);
-    PyModule_AddIntConstant(m, "KQ_EV_DELETE", EV_DELETE);
-    PyModule_AddIntConstant(m, "KQ_EV_ENABLE", EV_ENABLE);
-    PyModule_AddIntConstant(m, "KQ_EV_DISABLE", EV_DISABLE);
-    PyModule_AddIntConstant(m, "KQ_EV_ONESHOT", EV_ONESHOT);
-    PyModule_AddIntConstant(m, "KQ_EV_CLEAR", EV_CLEAR);
+    ADD_INT_CONST("KQ_EV_ADD", EV_ADD);
+    ADD_INT_CONST("KQ_EV_DELETE", EV_DELETE);
+    ADD_INT_CONST("KQ_EV_ENABLE", EV_ENABLE);
+    ADD_INT_CONST("KQ_EV_DISABLE", EV_DISABLE);
+    ADD_INT_CONST("KQ_EV_ONESHOT", EV_ONESHOT);
+    ADD_INT_CONST("KQ_EV_CLEAR", EV_CLEAR);
 
 #ifdef EV_SYSFLAGS
-    PyModule_AddIntConstant(m, "KQ_EV_SYSFLAGS", EV_SYSFLAGS);
+    ADD_INT_CONST("KQ_EV_SYSFLAGS", EV_SYSFLAGS);
 #endif
 #ifdef EV_FLAG1
-    PyModule_AddIntConstant(m, "KQ_EV_FLAG1", EV_FLAG1);
+    ADD_INT_CONST("KQ_EV_FLAG1", EV_FLAG1);
 #endif
 
-    PyModule_AddIntConstant(m, "KQ_EV_EOF", EV_EOF);
-    PyModule_AddIntConstant(m, "KQ_EV_ERROR", EV_ERROR);
+    ADD_INT_CONST("KQ_EV_EOF", EV_EOF);
+    ADD_INT_CONST("KQ_EV_ERROR", EV_ERROR);
 
     /* READ WRITE filter flag */
 #ifdef NOTE_LOWAT
-    PyModule_AddIntConstant(m, "KQ_NOTE_LOWAT", NOTE_LOWAT);
+    ADD_INT_CONST("KQ_NOTE_LOWAT", NOTE_LOWAT);
 #endif
 
     /* VNODE filter flags  */
 #ifdef EVFILT_VNODE
-    PyModule_AddIntConstant(m, "KQ_NOTE_DELETE", NOTE_DELETE);
-    PyModule_AddIntConstant(m, "KQ_NOTE_WRITE", NOTE_WRITE);
-    PyModule_AddIntConstant(m, "KQ_NOTE_EXTEND", NOTE_EXTEND);
-    PyModule_AddIntConstant(m, "KQ_NOTE_ATTRIB", NOTE_ATTRIB);
-    PyModule_AddIntConstant(m, "KQ_NOTE_LINK", NOTE_LINK);
-    PyModule_AddIntConstant(m, "KQ_NOTE_RENAME", NOTE_RENAME);
-    PyModule_AddIntConstant(m, "KQ_NOTE_REVOKE", NOTE_REVOKE);
+    ADD_INT_CONST("KQ_NOTE_DELETE", NOTE_DELETE);
+    ADD_INT_CONST("KQ_NOTE_WRITE", NOTE_WRITE);
+    ADD_INT_CONST("KQ_NOTE_EXTEND", NOTE_EXTEND);
+    ADD_INT_CONST("KQ_NOTE_ATTRIB", NOTE_ATTRIB);
+    ADD_INT_CONST("KQ_NOTE_LINK", NOTE_LINK);
+    ADD_INT_CONST("KQ_NOTE_RENAME", NOTE_RENAME);
+    ADD_INT_CONST("KQ_NOTE_REVOKE", NOTE_REVOKE);
 #endif
 
     /* PROC filter flags  */
 #ifdef EVFILT_PROC
-    PyModule_AddIntConstant(m, "KQ_NOTE_EXIT", NOTE_EXIT);
-    PyModule_AddIntConstant(m, "KQ_NOTE_FORK", NOTE_FORK);
-    PyModule_AddIntConstant(m, "KQ_NOTE_EXEC", NOTE_EXEC);
-    PyModule_AddIntConstant(m, "KQ_NOTE_PCTRLMASK", NOTE_PCTRLMASK);
-    PyModule_AddIntConstant(m, "KQ_NOTE_PDATAMASK", NOTE_PDATAMASK);
-
-    PyModule_AddIntConstant(m, "KQ_NOTE_TRACK", NOTE_TRACK);
-    PyModule_AddIntConstant(m, "KQ_NOTE_CHILD", NOTE_CHILD);
-    PyModule_AddIntConstant(m, "KQ_NOTE_TRACKERR", NOTE_TRACKERR);
+    ADD_INT_CONST("KQ_NOTE_EXIT", NOTE_EXIT);
+    ADD_INT_CONST("KQ_NOTE_FORK", NOTE_FORK);
+    ADD_INT_CONST("KQ_NOTE_EXEC", NOTE_EXEC);
+    ADD_INT_CONST("KQ_NOTE_PCTRLMASK", NOTE_PCTRLMASK);
+    ADD_INT_CONST("KQ_NOTE_PDATAMASK", NOTE_PDATAMASK);
+
+    ADD_INT_CONST("KQ_NOTE_TRACK", NOTE_TRACK);
+    ADD_INT_CONST("KQ_NOTE_CHILD", NOTE_CHILD);
+    ADD_INT_CONST("KQ_NOTE_TRACKERR", NOTE_TRACKERR);
 #endif
 
     /* NETDEV filter flags */
 #ifdef EVFILT_NETDEV
-    PyModule_AddIntConstant(m, "KQ_NOTE_LINKUP", NOTE_LINKUP);
-    PyModule_AddIntConstant(m, "KQ_NOTE_LINKDOWN", NOTE_LINKDOWN);
-    PyModule_AddIntConstant(m, "KQ_NOTE_LINKINV", NOTE_LINKINV);
+    ADD_INT_CONST("KQ_NOTE_LINKUP", NOTE_LINKUP);
+    ADD_INT_CONST("KQ_NOTE_LINKDOWN", NOTE_LINKDOWN);
+    ADD_INT_CONST("KQ_NOTE_LINKINV", NOTE_LINKINV);
 #endif
 
 #endif /* HAVE_KQUEUE */
+
+#undef ADD_INT_CONST
+
     return 0;
 }
 
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index bdb76c56f1a6e8..eda6b5608d52f7 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -48,7 +48,10 @@ typedef long long SHA1_INT64;        /* 64-bit integer */
 
 typedef struct {
     PyObject_HEAD
-
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;
+    PyThread_type_lock lock;
     Hacl_Streaming_SHA1_state *hash_state;
 } SHA1object;
 
@@ -71,6 +74,11 @@ static SHA1object *
 newSHA1object(SHA1State *st)
 {
     SHA1object *sha = (SHA1object *)PyObject_GC_New(SHA1object, st->sha1_type);
+    if (sha == NULL) {
+        return NULL;
+    }
+    HASHLIB_INIT_MUTEX(sha);
+
     PyObject_GC_Track(sha);
     return sha;
 }
@@ -115,7 +123,9 @@ SHA1Type_copy_impl(SHA1object *self, PyTypeObject *cls)
     if ((newobj = newSHA1object(st)) == NULL)
         return NULL;
 
+    ENTER_HASHLIB(self);
     newobj->hash_state = Hacl_Streaming_SHA1_legacy_copy(self->hash_state);
+    LEAVE_HASHLIB(self);
     return (PyObject *)newobj;
 }
 
@@ -130,7 +140,9 @@ SHA1Type_digest_impl(SHA1object *self)
 /*[clinic end generated code: output=2f05302a7aa2b5cb input=13824b35407444bd]*/
 {
     unsigned char digest[SHA1_DIGESTSIZE];
+    ENTER_HASHLIB(self);
     Hacl_Streaming_SHA1_legacy_finish(self->hash_state, digest);
+    LEAVE_HASHLIB(self);
     return PyBytes_FromStringAndSize((const char *)digest, SHA1_DIGESTSIZE);
 }
 
@@ -145,7 +157,9 @@ SHA1Type_hexdigest_impl(SHA1object *self)
 /*[clinic end generated code: output=4161fd71e68c6659 input=97691055c0c74ab0]*/
 {
     unsigned char digest[SHA1_DIGESTSIZE];
+    ENTER_HASHLIB(self);
     Hacl_Streaming_SHA1_legacy_finish(self->hash_state, digest);
+    LEAVE_HASHLIB(self);
     return _Py_strhex((const char *)digest, SHA1_DIGESTSIZE);
 }
 
@@ -177,7 +191,18 @@ SHA1Type_update(SHA1object *self, PyObject *obj)
 
     GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
 
-    update(self->hash_state, buf.buf, buf.len);
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        update(self->hash_state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
+    } else {
+        update(self->hash_state, buf.buf, buf.len);
+    }
 
     PyBuffer_Release(&buf);
     Py_RETURN_NONE;
@@ -279,7 +304,15 @@ _sha1_sha1_impl(PyObject *module, PyObject *string, int usedforsecurity)
         return NULL;
     }
     if (string) {
-        update(new->hash_state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            update(new->hash_state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            update(new->hash_state, buf.buf, buf.len);
+        }
         PyBuffer_Release(&buf);
     }
 
@@ -323,16 +356,9 @@ _sha1_exec(PyObject *module)
 
     st->sha1_type = (PyTypeObject *)PyType_FromModuleAndSpec(
         module, &sha1_type_spec, NULL);
-
-    if (st->sha1_type == NULL) {
-        return -1;
-    }
-
-    Py_INCREF(st->sha1_type);
-    if (PyModule_AddObject(module,
+    if (PyModule_AddObjectRef(module,
                            "SHA1Type",
                            (PyObject *)st->sha1_type) < 0) {
-        Py_DECREF(st->sha1_type);
         return -1;
     }
 
diff --git a/Modules/sha2module.c b/Modules/sha2module.c
index 37d9b5c538fd0b..968493ba51b50d 100644
--- a/Modules/sha2module.c
+++ b/Modules/sha2module.c
@@ -25,7 +25,7 @@
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_typeobject.h"    // _PyType_GetModuleState()
 #include "pycore_strhex.h"        // _Py_strhex()
-#include "structmember.h"         // PyMemberDef
+
 #include "hashlib.h"
 
 /*[clinic input]
@@ -45,19 +45,25 @@ class SHA512Type "SHA512object *" "&PyType_Type"
 
 /* Our SHA2 implementations defer to the HACL* verified library. */
 
-#include "_hacl/Hacl_Streaming_SHA2.h"
+#include "_hacl/Hacl_Hash_SHA2.h"
 
 // TODO: Get rid of int digestsize in favor of Hacl state info?
 
 typedef struct {
     PyObject_HEAD
     int digestsize;
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;
     Hacl_Streaming_SHA2_state_sha2_256 *state;
 } SHA256object;
 
 typedef struct {
     PyObject_HEAD
     int digestsize;
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;
     Hacl_Streaming_SHA2_state_sha2_512 *state;
 } SHA512object;
 
@@ -100,6 +106,8 @@ newSHA224object(sha2_state *state)
     if (!sha) {
         return NULL;
     }
+    HASHLIB_INIT_MUTEX(sha);
+
     PyObject_GC_Track(sha);
     return sha;
 }
@@ -112,6 +120,8 @@ newSHA256object(sha2_state *state)
     if (!sha) {
         return NULL;
     }
+    HASHLIB_INIT_MUTEX(sha);
+
     PyObject_GC_Track(sha);
     return sha;
 }
@@ -124,6 +134,8 @@ newSHA384object(sha2_state *state)
     if (!sha) {
         return NULL;
     }
+    HASHLIB_INIT_MUTEX(sha);
+
     PyObject_GC_Track(sha);
     return sha;
 }
@@ -136,6 +148,8 @@ newSHA512object(sha2_state *state)
     if (!sha) {
         return NULL;
     }
+    HASHLIB_INIT_MUTEX(sha);
+
     PyObject_GC_Track(sha);
     return sha;
 }
@@ -229,7 +243,9 @@ SHA256Type_copy_impl(SHA256object *self, PyTypeObject *cls)
         }
     }
 
+    ENTER_HASHLIB(self);
     SHA256copy(self, newobj);
+    LEAVE_HASHLIB(self);
     return (PyObject *)newobj;
 }
 
@@ -259,7 +275,9 @@ SHA512Type_copy_impl(SHA512object *self, PyTypeObject *cls)
         }
     }
 
+    ENTER_HASHLIB(self);
     SHA512copy(self, newobj);
+    LEAVE_HASHLIB(self);
     return (PyObject *)newobj;
 }
 
@@ -275,9 +293,11 @@ SHA256Type_digest_impl(SHA256object *self)
 {
     uint8_t digest[SHA256_DIGESTSIZE];
     assert(self->digestsize <= SHA256_DIGESTSIZE);
+    ENTER_HASHLIB(self);
     // HACL* performs copies under the hood so that self->state remains valid
     // after this call.
     Hacl_Streaming_SHA2_finish_256(self->state, digest);
+    LEAVE_HASHLIB(self);
     return PyBytes_FromStringAndSize((const char *)digest, self->digestsize);
 }
 
@@ -293,9 +313,11 @@ SHA512Type_digest_impl(SHA512object *self)
 {
     uint8_t digest[SHA512_DIGESTSIZE];
     assert(self->digestsize <= SHA512_DIGESTSIZE);
+    ENTER_HASHLIB(self);
     // HACL* performs copies under the hood so that self->state remains valid
     // after this call.
     Hacl_Streaming_SHA2_finish_512(self->state, digest);
+    LEAVE_HASHLIB(self);
     return PyBytes_FromStringAndSize((const char *)digest, self->digestsize);
 }
 
@@ -311,7 +333,9 @@ SHA256Type_hexdigest_impl(SHA256object *self)
 {
     uint8_t digest[SHA256_DIGESTSIZE];
     assert(self->digestsize <= SHA256_DIGESTSIZE);
+    ENTER_HASHLIB(self);
     Hacl_Streaming_SHA2_finish_256(self->state, digest);
+    LEAVE_HASHLIB(self);
     return _Py_strhex((const char *)digest, self->digestsize);
 }
 
@@ -327,7 +351,9 @@ SHA512Type_hexdigest_impl(SHA512object *self)
 {
     uint8_t digest[SHA512_DIGESTSIZE];
     assert(self->digestsize <= SHA512_DIGESTSIZE);
+    ENTER_HASHLIB(self);
     Hacl_Streaming_SHA2_finish_512(self->state, digest);
+    LEAVE_HASHLIB(self);
     return _Py_strhex((const char *)digest, self->digestsize);
 }
 
@@ -348,7 +374,18 @@ SHA256Type_update(SHA256object *self, PyObject *obj)
 
     GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
 
-    update_256(self->state, buf.buf, buf.len);
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        update_256(self->state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
+    } else {
+        update_256(self->state, buf.buf, buf.len);
+    }
 
     PyBuffer_Release(&buf);
     Py_RETURN_NONE;
@@ -371,7 +408,18 @@ SHA512Type_update(SHA512object *self, PyObject *obj)
 
     GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
 
-    update_512(self->state, buf.buf, buf.len);
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        update_512(self->state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
+    } else {
+        update_512(self->state, buf.buf, buf.len);
+    }
 
     PyBuffer_Release(&buf);
     Py_RETURN_NONE;
@@ -560,7 +608,15 @@ _sha2_sha256_impl(PyObject *module, PyObject *string, int usedforsecurity)
         return NULL;
     }
     if (string) {
-        update_256(new->state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            update_256(new->state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            update_256(new->state, buf.buf, buf.len);
+        }
         PyBuffer_Release(&buf);
     }
 
@@ -606,7 +662,15 @@ _sha2_sha224_impl(PyObject *module, PyObject *string, int usedforsecurity)
         return NULL;
     }
     if (string) {
-        update_256(new->state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            update_256(new->state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            update_256(new->state, buf.buf, buf.len);
+        }
         PyBuffer_Release(&buf);
     }
 
@@ -651,7 +715,15 @@ _sha2_sha512_impl(PyObject *module, PyObject *string, int usedforsecurity)
         return NULL;
     }
     if (string) {
-        update_512(new->state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            update_512(new->state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            update_512(new->state, buf.buf, buf.len);
+        }
         PyBuffer_Release(&buf);
     }
 
@@ -696,7 +768,15 @@ _sha2_sha384_impl(PyObject *module, PyObject *string, int usedforsecurity)
         return NULL;
     }
     if (string) {
-        update_512(new->state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            update_512(new->state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            update_512(new->state, buf.buf, buf.len);
+        }
         PyBuffer_Release(&buf);
     }
 
diff --git a/Modules/sha3module.c b/Modules/sha3module.c
index f05187498a19b3..d9d2f6c385a68b 100644
--- a/Modules/sha3module.c
+++ b/Modules/sha3module.c
@@ -60,6 +60,9 @@ class _sha3.shake_256 "SHA3object *" "&SHAKE256type"
 
 typedef struct {
     PyObject_HEAD
+    // Prevents undefined behavior via multiple threads entering the C API.
+    bool use_mutex;
+    PyMutex mutex;
     Hacl_Streaming_Keccak_state *hash_state;
 } SHA3object;
 
@@ -73,6 +76,8 @@ newSHA3object(PyTypeObject *type)
     if (newobj == NULL) {
         return NULL;
     }
+    HASHLIB_INIT_MUTEX(newobj);
+
     return newobj;
 }
 
@@ -133,7 +138,15 @@ py_sha3_new_impl(PyTypeObject *type, PyObject *data, int usedforsecurity)
 
     if (data) {
         GET_BUFFER_VIEW_OR_ERROR(data, &buf, goto error);
-        sha3_update(self->hash_state, buf.buf, buf.len);
+        if (buf.len >= HASHLIB_GIL_MINSIZE) {
+            /* We do not initialize self->lock here as this is the constructor
+             * where it is not yet possible to have concurrent access. */
+            Py_BEGIN_ALLOW_THREADS
+            sha3_update(self->hash_state, buf.buf, buf.len);
+            Py_END_ALLOW_THREADS
+        } else {
+            sha3_update(self->hash_state, buf.buf, buf.len);
+        }
     }
 
     PyBuffer_Release(&buf);
@@ -181,7 +194,9 @@ _sha3_sha3_224_copy_impl(SHA3object *self)
     if ((newobj = newSHA3object(Py_TYPE(self))) == NULL) {
         return NULL;
     }
+    ENTER_HASHLIB(self);
     newobj->hash_state = Hacl_Streaming_Keccak_copy(self->hash_state);
+    LEAVE_HASHLIB(self);
     return (PyObject *)newobj;
 }
 
@@ -199,7 +214,9 @@ _sha3_sha3_224_digest_impl(SHA3object *self)
     unsigned char digest[SHA3_MAX_DIGESTSIZE];
     // This function errors out if the algorithm is Shake. Here, we know this
     // not to be the case, and therefore do not perform error checking.
+    ENTER_HASHLIB(self);
     Hacl_Streaming_Keccak_finish(self->hash_state, digest);
+    LEAVE_HASHLIB(self);
     return PyBytes_FromStringAndSize((const char *)digest,
         Hacl_Streaming_Keccak_hash_len(self->hash_state));
 }
@@ -216,7 +233,9 @@ _sha3_sha3_224_hexdigest_impl(SHA3object *self)
 /*[clinic end generated code: output=75ad03257906918d input=2d91bb6e0d114ee3]*/
 {
     unsigned char digest[SHA3_MAX_DIGESTSIZE];
+    ENTER_HASHLIB(self);
     Hacl_Streaming_Keccak_finish(self->hash_state, digest);
+    LEAVE_HASHLIB(self);
     return _Py_strhex((const char *)digest,
         Hacl_Streaming_Keccak_hash_len(self->hash_state));
 }
@@ -236,8 +255,22 @@ _sha3_sha3_224_update(SHA3object *self, PyObject *data)
 /*[clinic end generated code: output=d3223352286ed357 input=a887f54dcc4ae227]*/
 {
     Py_buffer buf;
+
     GET_BUFFER_VIEW_OR_ERROUT(data, &buf);
-    sha3_update(self->hash_state, buf.buf, buf.len);
+
+    if (!self->use_mutex && buf.len >= HASHLIB_GIL_MINSIZE) {
+        self->use_mutex = true;
+    }
+    if (self->use_mutex) {
+        Py_BEGIN_ALLOW_THREADS
+        PyMutex_Lock(&self->mutex);
+        sha3_update(self->hash_state, buf.buf, buf.len);
+        PyMutex_Unlock(&self->mutex);
+        Py_END_ALLOW_THREADS
+    } else {
+        sha3_update(self->hash_state, buf.buf, buf.len);
+    }
+
     PyBuffer_Release(&buf);
     Py_RETURN_NONE;
 }
diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index 2350236ad46b25..394a997b20c06d 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -4,7 +4,6 @@
 /* XXX Signals should be recorded per thread, now we have thread state. */
 
 #include "Python.h"
-#include "pycore_atomic.h"        // _Py_atomic_int
 #include "pycore_call.h"          // _PyObject_Call()
 #include "pycore_ceval.h"         // _PyEval_SignalReceived()
 #include "pycore_emscripten_signal.h"  // _Py_CHECK_EMSCRIPTEN_SIGNALS
@@ -13,15 +12,18 @@
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_pyerrors.h"      // _PyErr_SetString()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "pycore_signal.h"        // Py_NSIG
+#include "pycore_signal.h"        // _Py_RestoreSignals()
 
 #ifndef MS_WINDOWS
-#  include "posixmodule.h"
+#  include "posixmodule.h"        // _PyLong_FromUid()
 #endif
 #ifdef MS_WINDOWS
-#  include "socketmodule.h"   /* needed for SOCKET_T */
+#  include "socketmodule.h"       // SOCKET_T
 #endif
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // alarm()
+#endif
 #ifdef MS_WINDOWS
 #  ifdef HAVE_PROCESS_H
 #    include <process.h>
@@ -29,16 +31,16 @@
 #endif
 
 #ifdef HAVE_SIGNAL_H
-#  include <signal.h>
+#  include <signal.h>             // sigaction()
 #endif
 #ifdef HAVE_SYS_SYSCALL_H
-#  include <sys/syscall.h>
+#  include <sys/syscall.h>        // __NR_pidfd_send_signal
 #endif
 #ifdef HAVE_SYS_STAT_H
 #  include <sys/stat.h>
 #endif
 #ifdef HAVE_SYS_TIME_H
-#  include <sys/time.h>
+#  include <sys/time.h>           // setitimer()
 #endif
 
 #if defined(HAVE_PTHREAD_SIGMASK) && !defined(HAVE_BROKEN_PTHREAD_SIGMASK)
@@ -124,13 +126,15 @@ typedef struct {
 Py_LOCAL_INLINE(PyObject *)
 get_handler(int i)
 {
-    return (PyObject *)_Py_atomic_load(&Handlers[i].func);
+    return (PyObject *)_Py_atomic_load_ptr(&Handlers[i].func);
 }
 
 Py_LOCAL_INLINE(void)
 set_handler(int i, PyObject* func)
 {
-    _Py_atomic_store(&Handlers[i].func, (uintptr_t)func);
+    /* Store func with atomic operation to ensure
+       that PyErr_SetInterrupt is async-signal-safe. */
+    _Py_atomic_store_ptr(&Handlers[i].func, func);
 }
 
 
@@ -240,8 +244,7 @@ report_wakeup_write_error(void *data)
     errno = (int) (intptr_t) data;
     PyObject *exc = PyErr_GetRaisedException();
     PyErr_SetFromErrno(PyExc_OSError);
-    _PyErr_WriteUnraisableMsg("when trying to write to the signal wakeup fd",
-                              NULL);
+    PyErr_FormatUnraisable("Exception ignored when trying to write to the signal wakeup fd");
     PyErr_SetRaisedException(exc);
     errno = save_errno;
     return 0;
@@ -258,7 +261,7 @@ report_wakeup_send_error(void* data)
        recognizes the error codes used by both GetLastError() and
        WSAGetLastError */
     PyErr_SetExcFromWindowsErr(PyExc_OSError, send_errno);
-    _PyErr_WriteUnraisableMsg("when trying to send to the signal wakeup fd", NULL);
+    PyErr_FormatUnraisable("Exception ignored when trying to send to the signal wakeup fd");
     PyErr_SetRaisedException(exc);
     return 0;
 }
@@ -267,11 +270,11 @@ report_wakeup_send_error(void* data)
 static void
 trip_signal(int sig_num)
 {
-    _Py_atomic_store_relaxed(&Handlers[sig_num].tripped, 1);
+    _Py_atomic_store_int(&Handlers[sig_num].tripped, 1);
 
     /* Set is_tripped after setting .tripped, as it gets
        cleared in PyErr_CheckSignals() before .tripped. */
-    _Py_atomic_store(&is_tripped, 1);
+    _Py_atomic_store_int(&is_tripped, 1);
 
     /* Signals are always handled by the main interpreter */
     PyInterpreterState *interp = _PyInterpreterState_Main();
@@ -314,7 +317,8 @@ trip_signal(int sig_num)
                        still use it for this exceptional case. */
                     _PyEval_AddPendingCall(interp,
                                            report_wakeup_send_error,
-                                           (void *)(intptr_t) last_error);
+                                           (void *)(intptr_t) last_error,
+                                           _Py_PENDING_MAINTHREADONLY);
                 }
             }
         }
@@ -333,7 +337,8 @@ trip_signal(int sig_num)
                        still use it for this exceptional case. */
                     _PyEval_AddPendingCall(interp,
                                            report_wakeup_write_error,
-                                           (void *)(intptr_t)errno);
+                                           (void *)(intptr_t)errno,
+                                           _Py_PENDING_MAINTHREADONLY);
                 }
             }
         }
@@ -654,7 +659,7 @@ signal_strsignal_impl(PyObject *module, int signalnum)
         Py_RETURN_NONE;
 #endif
 
-    return Py_BuildValue("s", res);
+    return PyUnicode_FromString(res);
 }
 
 #ifdef HAVE_SIGINTERRUPT
@@ -1729,7 +1734,7 @@ _PySignal_Fini(void)
     // Restore default signals and clear handlers
     for (int signum = 1; signum < Py_NSIG; signum++) {
         PyObject *func = get_handler(signum);
-        _Py_atomic_store_relaxed(&Handlers[signum].tripped, 0);
+        _Py_atomic_store_int_relaxed(&Handlers[signum].tripped, 0);
         set_handler(signum, NULL);
         if (func != NULL
             && func != Py_None
@@ -1765,9 +1770,8 @@ PyErr_CheckSignals(void)
        Python code to ensure signals are handled. Checking for the GC here
        allows long running native code to clean cycles created using the C-API
        even if it doesn't run the evaluation loop */
-    struct _ceval_state *interp_ceval_state = &tstate->interp->ceval;
-    if (_Py_atomic_load_relaxed(&interp_ceval_state->gc_scheduled)) {
-        _Py_atomic_store_relaxed(&interp_ceval_state->gc_scheduled, 0);
+    if (_Py_eval_breaker_bit_is_set(tstate->interp, _PY_GC_SCHEDULED_BIT)) {
+        _Py_set_eval_breaker_bit(tstate->interp, _PY_GC_SCHEDULED_BIT, 0);
         _Py_RunGC(tstate);
     }
 
@@ -1784,7 +1788,7 @@ int
 _PyErr_CheckSignalsTstate(PyThreadState *tstate)
 {
     _Py_CHECK_EMSCRIPTEN_SIGNALS();
-    if (!_Py_atomic_load(&is_tripped)) {
+    if (!_Py_atomic_load_int(&is_tripped)) {
         return 0;
     }
 
@@ -1802,15 +1806,15 @@ _PyErr_CheckSignalsTstate(PyThreadState *tstate)
      *       we receive a signal i after we zero is_tripped and before we
      *       check Handlers[i].tripped.
      */
-    _Py_atomic_store(&is_tripped, 0);
+    _Py_atomic_store_int(&is_tripped, 0);
 
     _PyInterpreterFrame *frame = _PyThreadState_GetFrame(tstate);
     signal_state_t *state = &signal_global_state;
     for (int i = 1; i < Py_NSIG; i++) {
-        if (!_Py_atomic_load_relaxed(&Handlers[i].tripped)) {
+        if (!_Py_atomic_load_int_relaxed(&Handlers[i].tripped)) {
             continue;
         }
-        _Py_atomic_store_relaxed(&Handlers[i].tripped, 0);
+        _Py_atomic_store_int_relaxed(&Handlers[i].tripped, 0);
 
         /* Signal handlers can be modified while a signal is received,
          * and therefore the fact that trip_signal() or PyErr_SetInterrupt()
@@ -1856,7 +1860,7 @@ _PyErr_CheckSignalsTstate(PyThreadState *tstate)
         }
         if (!result) {
             /* On error, re-schedule a call to _PyErr_CheckSignalsTstate() */
-            _Py_atomic_store(&is_tripped, 1);
+            _Py_atomic_store_int(&is_tripped, 1);
             return -1;
         }
 
@@ -1974,7 +1978,7 @@ _PySignal_Init(int install_signal_handlers)
 #endif
 
     for (int signum = 1; signum < Py_NSIG; signum++) {
-        _Py_atomic_store_relaxed(&Handlers[signum].tripped, 0);
+        _Py_atomic_store_int_relaxed(&Handlers[signum].tripped, 0);
     }
 
     if (install_signal_handlers) {
@@ -1996,11 +2000,11 @@ _PyOS_InterruptOccurred(PyThreadState *tstate)
         return 0;
     }
 
-    if (!_Py_atomic_load_relaxed(&Handlers[SIGINT].tripped)) {
+    if (!_Py_atomic_load_int_relaxed(&Handlers[SIGINT].tripped)) {
         return 0;
     }
 
-    _Py_atomic_store_relaxed(&Handlers[SIGINT].tripped, 0);
+    _Py_atomic_store_int_relaxed(&Handlers[SIGINT].tripped, 0);
     return 1;
 }
 
@@ -2018,13 +2022,13 @@ PyOS_InterruptOccurred(void)
 static void
 _clear_pending_signals(void)
 {
-    if (!_Py_atomic_load(&is_tripped)) {
+    if (!_Py_atomic_load_int(&is_tripped)) {
         return;
     }
 
-    _Py_atomic_store(&is_tripped, 0);
+    _Py_atomic_store_int(&is_tripped, 0);
     for (int i = 1; i < Py_NSIG; ++i) {
-        _Py_atomic_store_relaxed(&Handlers[i].tripped, 0);
+        _Py_atomic_store_int_relaxed(&Handlers[i].tripped, 0);
     }
 }
 
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index c11fb4400eab2f..0a0e0e78656f76 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -105,14 +105,13 @@ Local naming conventions:
 # pragma weak inet_aton
 #endif
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
+#include "pycore_capsule.h"       // _PyCapsule_SetTraverse()
 #include "pycore_fileutils.h"     // _Py_set_inheritable()
 #include "pycore_moduleobject.h"  // _PyModule_GetState
-#include "structmember.h"         // PyMemberDef
 
 #ifdef _Py_MEMORY_SANITIZER
-# include <sanitizer/msan_interface.h>
+#  include <sanitizer/msan_interface.h>
 #endif
 
 /* Socket object documentation */
@@ -264,7 +263,7 @@ shutdown(how) -- shut down traffic in one or both directions\n\
 #ifdef HAVE_NETDB_H
 #  include <netdb.h>
 #endif
-# include <unistd.h>
+#include <unistd.h>               // close()
 
 /* Headers needed for inet_ntoa() and inet_addr() */
 #   include <arpa/inet.h>
@@ -393,16 +392,10 @@ remove_unusable_flags(PyObject *m)
             break;
         }
         else {
-            PyObject *flag_name = PyUnicode_FromString(win_runtime_flags[i].flag_name);
-            if (flag_name == NULL) {
+            if (PyDict_PopString(dict, win_runtime_flags[i].flag_name,
+                                 NULL) < 0) {
                 return -1;
             }
-            PyObject *v = _PyDict_Pop(dict, flag_name, Py_None);
-            Py_DECREF(flag_name);
-            if (v == NULL) {
-                return -1;
-            }
-            Py_DECREF(v);
         }
     }
     return 0;
@@ -1339,8 +1332,6 @@ setbdaddr(const char *name, bdaddr_t *bdaddr)
 static PyObject *
 makebdaddr(bdaddr_t *bdaddr)
 {
-    char buf[(6 * 2) + 5 + 1];
-
 #ifdef MS_WINDOWS
     int i;
     unsigned int octets[6];
@@ -1349,16 +1340,14 @@ makebdaddr(bdaddr_t *bdaddr)
         octets[i] = ((*bdaddr) >> (8 * i)) & 0xFF;
     }
 
-    sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
+    return PyUnicode_FromFormat("%02X:%02X:%02X:%02X:%02X:%02X",
         octets[5], octets[4], octets[3],
         octets[2], octets[1], octets[0]);
 #else
-    sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
+    return PyUnicode_FromFormat("%02X:%02X:%02X:%02X:%02X:%02X",
         bdaddr->b[5], bdaddr->b[4], bdaddr->b[3],
         bdaddr->b[2], bdaddr->b[1], bdaddr->b[0]);
 #endif
-
-    return PyUnicode_FromString(buf);
 }
 #endif
 
@@ -1721,9 +1710,6 @@ idna_converter(PyObject *obj, struct maybe_idna *data)
         len = PyByteArray_Size(obj);
     }
     else if (PyUnicode_Check(obj)) {
-        if (PyUnicode_READY(obj) == -1) {
-            return 0;
-        }
         if (PyUnicode_IS_COMPACT_ASCII(obj)) {
             data->buf = PyUnicode_DATA(obj);
             len = PyUnicode_GET_LENGTH(obj);
@@ -4886,17 +4872,17 @@ sock_sendmsg_afalg(PySocketSockObject *self, PyObject *args, PyObject *kwds)
 
     /* op is a required, keyword-only argument >= 0 */
     if (opobj != NULL) {
-        op = _PyLong_AsInt(opobj);
+        op = PyLong_AsInt(opobj);
     }
     if (op < 0) {
-        /* override exception from _PyLong_AsInt() */
+        /* override exception from PyLong_AsInt() */
         PyErr_SetString(PyExc_TypeError,
                         "Invalid or missing argument 'op'");
         goto finally;
     }
     /* assoclen is optional but must be >= 0 */
     if (assoclenobj != NULL) {
-        assoclen = _PyLong_AsInt(assoclenobj);
+        assoclen = PyLong_AsInt(assoclenobj);
         if (assoclen == -1 && PyErr_Occurred()) {
             goto finally;
         }
@@ -5014,7 +5000,7 @@ sock_shutdown(PySocketSockObject *s, PyObject *arg)
     int how;
     int res;
 
-    how = _PyLong_AsInt(arg);
+    how = PyLong_AsInt(arg);
     if (how == -1 && PyErr_Occurred())
         return NULL;
     Py_BEGIN_ALLOW_THREADS
@@ -5213,9 +5199,9 @@ static PyMethodDef sock_methods[] = {
 
 /* SockObject members */
 static PyMemberDef sock_memberlist[] = {
-       {"family", T_INT, offsetof(PySocketSockObject, sock_family), READONLY, "the socket family"},
-       {"type", T_INT, offsetof(PySocketSockObject, sock_type), READONLY, "the socket type"},
-       {"proto", T_INT, offsetof(PySocketSockObject, sock_proto), READONLY, "the socket protocol"},
+       {"family", Py_T_INT, offsetof(PySocketSockObject, sock_family), Py_READONLY, "the socket family"},
+       {"type", Py_T_INT, offsetof(PySocketSockObject, sock_type), Py_READONLY, "the socket type"},
+       {"proto", Py_T_INT, offsetof(PySocketSockObject, sock_proto), Py_READONLY, "the socket protocol"},
        {0},
 };
 
@@ -5405,8 +5391,8 @@ sock_initobj_impl(PySocketSockObject *self, int family, int type, int proto,
             }
 
             if (!SetHandleInformation((HANDLE)fd, HANDLE_FLAG_INHERIT, 0)) {
-                closesocket(fd);
                 PyErr_SetFromWindowsErr(0);
+                closesocket(fd);
                 return -1;
             }
 
@@ -5620,8 +5606,9 @@ socket_gethostname(PyObject *self, PyObject *unused)
                            name,
                            &size))
     {
+        PyErr_SetFromWindowsErr(0);
         PyMem_Free(name);
-        return PyErr_SetFromWindowsErr(0);
+        return NULL;
     }
 
     result = PyUnicode_FromWideChar(name, size);
@@ -5658,8 +5645,9 @@ socket_sethostname(PyObject *self, PyObject *args)
     Py_buffer buf;
     int res, flag = 0;
 
-#ifdef _AIX
-/* issue #18259, not declared in any useful header file */
+#if defined(_AIX) || (defined(__sun) && defined(__SVR4) && Py_SUNOS_VERSION <= 510)
+/* issue #18259, sethostname is not declared in any useful header file on AIX
+ * the same is true for Solaris 10 */
 extern int sethostname(const char *, size_t);
 #endif
 
@@ -5787,9 +5775,15 @@ gethost_common(socket_state *state, struct hostent *h, struct sockaddr *addr,
 
     /* SF #1511317: h_aliases can be NULL */
     if (h->h_aliases) {
-        for (pch = h->h_aliases; *pch != NULL; pch++) {
+        for (pch = h->h_aliases; ; pch++) {
             int status;
-            tmp = PyUnicode_FromString(*pch);
+            char *host_alias;
+            // pch can be misaligned
+            memcpy(&host_alias, pch, sizeof(host_alias));
+            if (host_alias == NULL) {
+                break;
+            }
+            tmp = PyUnicode_FromString(host_alias);
             if (tmp == NULL)
                 goto err;
 
@@ -5801,8 +5795,14 @@ gethost_common(socket_state *state, struct hostent *h, struct sockaddr *addr,
         }
     }
 
-    for (pch = h->h_addr_list; *pch != NULL; pch++) {
+    for (pch = h->h_addr_list; ; pch++) {
         int status;
+        char *host_address;
+        // pch can be misaligned
+        memcpy(&host_address, pch, sizeof(host_address));
+        if (host_address == NULL) {
+            break;
+        }
 
         switch (af) {
 
@@ -5814,7 +5814,7 @@ gethost_common(socket_state *state, struct hostent *h, struct sockaddr *addr,
 #ifdef HAVE_SOCKADDR_SA_LEN
             sin.sin_len = sizeof(sin);
 #endif
-            memcpy(&sin.sin_addr, *pch, sizeof(sin.sin_addr));
+            memcpy(&sin.sin_addr, host_address, sizeof(sin.sin_addr));
             tmp = make_ipv4_addr(&sin);
 
             if (pch == h->h_addr_list && alen >= sizeof(sin))
@@ -5831,7 +5831,7 @@ gethost_common(socket_state *state, struct hostent *h, struct sockaddr *addr,
 #ifdef HAVE_SOCKADDR_SA_LEN
             sin6.sin6_len = sizeof(sin6);
 #endif
-            memcpy(&sin6.sin6_addr, *pch, sizeof(sin6.sin6_addr));
+            memcpy(&sin6.sin6_addr, host_address, sizeof(sin6.sin6_addr));
             tmp = make_ipv6_addr(&sin6);
 
             if (pch == h->h_addr_list && alen >= sizeof(sin6))
@@ -6207,8 +6207,8 @@ socket_dup(PyObject *self, PyObject *fdobj)
     }
 
     if (!SetHandleInformation((HANDLE)newfd, HANDLE_FLAG_INHERIT, 0)) {
-        closesocket(newfd);
         PyErr_SetFromWindowsErr(0);
+        closesocket(newfd);
         return NULL;
     }
 #else
@@ -6326,14 +6326,18 @@ AF_UNIX if defined on the platform; otherwise, the default is AF_INET.");
 #endif /* HAVE_SOCKETPAIR */
 
 
+/*[clinic input]
+_socket.socket.ntohs
+    x: int
+    /
+
+Convert a 16-bit unsigned integer from network to host byte order.
+[clinic start generated code]*/
+
 static PyObject *
-socket_ntohs(PyObject *self, PyObject *args)
+_socket_socket_ntohs_impl(PySocketSockObject *self, int x)
+/*[clinic end generated code: output=a828a61a9fb205b2 input=9a79cb3a71652147]*/
 {
-    int x;
-
-    if (!PyArg_ParseTuple(args, "i:ntohs", &x)) {
-        return NULL;
-    }
     if (x < 0) {
         PyErr_SetString(PyExc_OverflowError,
                         "ntohs: can't convert negative Python int to C "
@@ -6349,11 +6353,6 @@ socket_ntohs(PyObject *self, PyObject *args)
     return PyLong_FromUnsignedLong(ntohs((unsigned short)x));
 }
 
-PyDoc_STRVAR(ntohs_doc,
-"ntohs(integer) -> integer\n\
-\n\
-Convert a 16-bit unsigned integer from network to host byte order.");
-
 
 static PyObject *
 socket_ntohl(PyObject *self, PyObject *arg)
@@ -6389,14 +6388,18 @@ PyDoc_STRVAR(ntohl_doc,
 Convert a 32-bit integer from network to host byte order.");
 
 
+/*[clinic input]
+_socket.socket.htons
+    x: int
+    /
+
+Convert a 16-bit unsigned integer from host to network byte order.
+[clinic start generated code]*/
+
 static PyObject *
-socket_htons(PyObject *self, PyObject *args)
+_socket_socket_htons_impl(PySocketSockObject *self, int x)
+/*[clinic end generated code: output=d785ee692312da47 input=053252d8416f4337]*/
 {
-    int x;
-
-    if (!PyArg_ParseTuple(args, "i:htons", &x)) {
-        return NULL;
-    }
     if (x < 0) {
         PyErr_SetString(PyExc_OverflowError,
                         "htons: can't convert negative Python int to C "
@@ -6412,11 +6415,6 @@ socket_htons(PyObject *self, PyObject *args)
     return PyLong_FromUnsignedLong(htons((unsigned short)x));
 }
 
-PyDoc_STRVAR(htons_doc,
-"htons(integer) -> integer\n\
-\n\
-Convert a 16-bit unsigned integer from host to network byte order.");
-
 
 static PyObject *
 socket_htonl(PyObject *self, PyObject *arg)
@@ -6453,14 +6451,17 @@ Convert a 32-bit integer from host to network byte order.");
 
 /* socket.inet_aton() and socket.inet_ntoa() functions. */
 
-PyDoc_STRVAR(inet_aton_doc,
-"inet_aton(string) -> bytes giving packed 32-bit IP representation\n\
-\n\
-Convert an IP address in string format (123.45.67.89) to the 32-bit packed\n\
-binary format used in low-level network functions.");
+/*[clinic input]
+_socket.socket.inet_aton
+    ip_addr: str
+    /
 
-static PyObject*
-socket_inet_aton(PyObject *self, PyObject *args)
+Convert an IP address in string format (123.45.67.89) to the 32-bit packed binary format used in low-level network functions.
+[clinic start generated code]*/
+
+static PyObject *
+_socket_socket_inet_aton_impl(PySocketSockObject *self, const char *ip_addr)
+/*[clinic end generated code: output=5bfe11a255423d8c input=a120e20cb52b9488]*/
 {
 #ifdef HAVE_INET_ATON
     struct in_addr buf;
@@ -6473,11 +6474,6 @@ socket_inet_aton(PyObject *self, PyObject *args)
     /* Have to use inet_addr() instead */
     unsigned int packed_addr;
 #endif
-    const char *ip_addr;
-
-    if (!PyArg_ParseTuple(args, "s:inet_aton", &ip_addr))
-        return NULL;
-
 
 #ifdef HAVE_INET_ATON
 
@@ -6526,30 +6522,29 @@ socket_inet_aton(PyObject *self, PyObject *args)
 }
 
 #ifdef HAVE_INET_NTOA
-PyDoc_STRVAR(inet_ntoa_doc,
-"inet_ntoa(packed_ip) -> ip_address_string\n\
-\n\
-Convert an IP address from 32-bit packed binary format to string format");
+/*[clinic input]
+_socket.socket.inet_ntoa
+    packed_ip: Py_buffer
+    /
 
-static PyObject*
-socket_inet_ntoa(PyObject *self, PyObject *args)
+Convert an IP address from 32-bit packed binary format to string format.
+[clinic start generated code]*/
+
+static PyObject *
+_socket_socket_inet_ntoa_impl(PySocketSockObject *self, Py_buffer *packed_ip)
+/*[clinic end generated code: output=b671880a3f62461b input=95c2c4a1b2ee957c]*/
 {
-    Py_buffer packed_ip;
     struct in_addr packed_addr;
 
-    if (!PyArg_ParseTuple(args, "y*:inet_ntoa", &packed_ip)) {
-        return NULL;
-    }
-
-    if (packed_ip.len != sizeof(packed_addr)) {
+    if (packed_ip->len != sizeof(packed_addr)) {
         PyErr_SetString(PyExc_OSError,
             "packed IP wrong length for inet_ntoa");
-        PyBuffer_Release(&packed_ip);
+        PyBuffer_Release(packed_ip);
         return NULL;
     }
 
-    memcpy(&packed_addr, packed_ip.buf, packed_ip.len);
-    PyBuffer_Release(&packed_ip);
+    memcpy(&packed_addr, packed_ip->buf, packed_ip->len);
+    PyBuffer_Release(packed_ip);
 
     SUPPRESS_DEPRECATED_CALL
     return PyUnicode_FromString(inet_ntoa(packed_addr));
@@ -6655,11 +6650,12 @@ socket_inet_ntop(PyObject *self, PyObject *args)
 
     /* inet_ntop guarantee NUL-termination of resulting string. */
     retval = inet_ntop(af, packed_ip.buf, ip, sizeof(ip));
-    PyBuffer_Release(&packed_ip);
     if (!retval) {
         PyErr_SetFromErrno(PyExc_OSError);
+        PyBuffer_Release(&packed_ip);
         return NULL;
     } else {
+        PyBuffer_Release(&packed_ip);
         return PyUnicode_FromString(retval);
     }
 }
@@ -6998,8 +6994,8 @@ socket_if_nameindex(PyObject *self, PyObject *arg)
 
     ni = if_nameindex();
     if (ni == NULL) {
-        Py_DECREF(list);
         PyErr_SetFromErrno(PyExc_OSError);
+        Py_DECREF(list);
         return NULL;
     }
 
@@ -7042,18 +7038,23 @@ PyDoc_STRVAR(if_nameindex_doc,
 \n\
 Returns a list of network interface information (index, name) tuples.");
 
+/*[clinic input]
+_socket.socket.if_nametoindex
+    oname: object(converter="PyUnicode_FSConverter")
+    /
+
+Returns the interface index corresponding to the interface name if_name.
+[clinic start generated code]*/
+
 static PyObject *
-socket_if_nametoindex(PyObject *self, PyObject *args)
+_socket_socket_if_nametoindex_impl(PySocketSockObject *self, PyObject *oname)
+/*[clinic end generated code: output=f7fc00511a309a8e input=662688054482cd46]*/
 {
-    PyObject *oname;
 #ifdef MS_WINDOWS
     NET_IFINDEX index;
 #else
     unsigned long index;
 #endif
-    if (!PyArg_ParseTuple(args, "O&:if_nametoindex",
-                          PyUnicode_FSConverter, &oname))
-        return NULL;
 
     index = if_nametoindex(PyBytes_AS_STRING(oname));
     Py_DECREF(oname);
@@ -7066,25 +7067,27 @@ socket_if_nametoindex(PyObject *self, PyObject *args)
     return PyLong_FromUnsignedLong(index);
 }
 
-PyDoc_STRVAR(if_nametoindex_doc,
-"if_nametoindex(if_name)\n\
-\n\
-Returns the interface index corresponding to the interface name if_name.");
 
 static PyObject *
 socket_if_indextoname(PyObject *self, PyObject *arg)
 {
+    unsigned long index_long = PyLong_AsUnsignedLong(arg);
+    if (index_long == (unsigned long) -1 && PyErr_Occurred()) {
+        return NULL;
+    }
+
 #ifdef MS_WINDOWS
-    NET_IFINDEX index;
+    NET_IFINDEX index = (NET_IFINDEX)index_long;
 #else
-    unsigned long index;
+    unsigned int index = (unsigned int)index_long;
 #endif
-    char name[IF_NAMESIZE + 1];
 
-    index = PyLong_AsUnsignedLong(arg);
-    if (index == (unsigned long) -1)
+    if ((unsigned long)index != index_long) {
+        PyErr_SetString(PyExc_OverflowError, "index is too large");
         return NULL;
+    }
 
+    char name[IF_NAMESIZE + 1];
     if (if_indextoname(index, name) == NULL) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
@@ -7208,19 +7211,15 @@ static PyMethodDef socket_methods[] = {
     {"socketpair",              socket_socketpair,
      METH_VARARGS, socketpair_doc},
 #endif
-    {"ntohs",                   socket_ntohs,
-     METH_VARARGS, ntohs_doc},
+    _SOCKET_SOCKET_NTOHS_METHODDEF
     {"ntohl",                   socket_ntohl,
      METH_O, ntohl_doc},
-    {"htons",                   socket_htons,
-     METH_VARARGS, htons_doc},
+    _SOCKET_SOCKET_HTONS_METHODDEF
     {"htonl",                   socket_htonl,
      METH_O, htonl_doc},
-    {"inet_aton",               socket_inet_aton,
-     METH_VARARGS, inet_aton_doc},
+    _SOCKET_SOCKET_INET_ATON_METHODDEF
 #ifdef HAVE_INET_NTOA
-    {"inet_ntoa",               socket_inet_ntoa,
-     METH_VARARGS, inet_ntoa_doc},
+    _SOCKET_SOCKET_INET_NTOA_METHODDEF
 #endif
 #ifdef HAVE_INET_PTON
     {"inet_pton",               socket_inet_pton,
@@ -7243,8 +7242,7 @@ static PyMethodDef socket_methods[] = {
 #if defined(HAVE_IF_NAMEINDEX) || defined(MS_WINDOWS)
     {"if_nameindex", socket_if_nameindex,
      METH_NOARGS, if_nameindex_doc},
-    {"if_nametoindex", socket_if_nametoindex,
-     METH_VARARGS, if_nametoindex_doc},
+    _SOCKET_SOCKET_IF_NAMETOINDEX_METHODDEF
     {"if_indextoname", socket_if_indextoname,
      METH_O, if_indextoname_doc},
 #endif
@@ -7310,20 +7308,39 @@ os_init(void)
 }
 #endif
 
+static int
+sock_capi_traverse(PyObject *capsule, visitproc visit, void *arg)
+{
+    PySocketModule_APIObject *capi = PyCapsule_GetPointer(capsule, PySocket_CAPSULE_NAME);
+    assert(capi != NULL);
+    Py_VISIT(capi->Sock_Type);
+    return 0;
+}
+
+static int
+sock_capi_clear(PyObject *capsule)
+{
+    PySocketModule_APIObject *capi = PyCapsule_GetPointer(capsule, PySocket_CAPSULE_NAME);
+    assert(capi != NULL);
+    Py_CLEAR(capi->Sock_Type);
+    return 0;
+}
+
 static void
-sock_free_api(PySocketModule_APIObject *capi)
+sock_capi_free(PySocketModule_APIObject *capi)
 {
-    Py_DECREF(capi->Sock_Type);
+    Py_XDECREF(capi->Sock_Type);  // sock_capi_free() can clear it
     Py_DECREF(capi->error);
     Py_DECREF(capi->timeout_error);
     PyMem_Free(capi);
 }
 
 static void
-sock_destroy_api(PyObject *capsule)
+sock_capi_destroy(PyObject *capsule)
 {
     void *capi = PyCapsule_GetPointer(capsule, PySocket_CAPSULE_NAME);
-    sock_free_api(capi);
+    assert(capi != NULL);
+    sock_capi_free(capi);
 }
 
 static PySocketModule_APIObject *
@@ -7428,14 +7445,18 @@ socket_exec(PyObject *m)
     }
     PyObject *capsule = PyCapsule_New(capi,
                                       PySocket_CAPSULE_NAME,
-                                      sock_destroy_api);
+                                      sock_capi_destroy);
     if (capsule == NULL) {
-        sock_free_api(capi);
+        sock_capi_free(capi);
         goto error;
     }
-    int rc = PyModule_AddObjectRef(m, PySocket_CAPI_NAME, capsule);
-    Py_DECREF(capsule);
-    if (rc < 0) {
+    if (_PyCapsule_SetTraverse(capsule,
+                               sock_capi_traverse, sock_capi_clear) < 0) {
+        sock_capi_free(capi);
+        goto error;
+    }
+
+    if (PyModule_Add(m, PySocket_CAPI_NAME, capsule) < 0) {
         goto error;
     }
 
@@ -7692,10 +7713,10 @@ socket_exec(PyObject *m)
 
 /* FreeBSD divert(4) */
 #ifdef PF_DIVERT
-    PyModule_AddIntMacro(m, PF_DIVERT);
+    ADD_INT_MACRO(m, PF_DIVERT);
 #endif
 #ifdef AF_DIVERT
-    PyModule_AddIntMacro(m, AF_DIVERT);
+    ADD_INT_MACRO(m, AF_DIVERT);
 #endif
 
 #ifdef AF_PACKET
@@ -8788,6 +8809,9 @@ socket_exec(PyObject *m)
 #ifdef NI_DGRAM
     ADD_INT_MACRO(m, NI_DGRAM);
 #endif
+#ifdef NI_IDN
+    ADD_INT_MACRO(m, NI_IDN);
+#endif
 
     /* shutdown() parameters */
 #ifdef SHUT_RD
@@ -8826,13 +8850,7 @@ socket_exec(PyObject *m)
         };
         int i;
         for (i = 0; i < Py_ARRAY_LENGTH(codes); ++i) {
-            PyObject *tmp = PyLong_FromUnsignedLong(codes[i]);
-            if (tmp == NULL) {
-                goto error;
-            }
-            int rc = PyModule_AddObjectRef(m, names[i], tmp);
-            Py_DECREF(tmp);
-            if (rc < 0) {
+            if (PyModule_Add(m, names[i], PyLong_FromUnsignedLong(codes[i])) < 0) {
                 goto error;
             }
         }
diff --git a/Modules/socketmodule.h b/Modules/socketmodule.h
index f5ca00450ee92a..47146a28e02c8f 100644
--- a/Modules/socketmodule.h
+++ b/Modules/socketmodule.h
@@ -1,5 +1,7 @@
 /* Socket module header file */
 
+#include "pycore_time.h"          // _PyTime_t
+
 /* Includes needed for the sockaddr_* symbols below */
 #ifndef MS_WINDOWS
 #ifdef __VMS
@@ -98,6 +100,8 @@ typedef int socklen_t;
 #  include <asm/types.h>
 # endif
 # include <linux/netlink.h>
+#elif defined(HAVE_NETLINK_NETLINK_H)
+# include <netlink/netlink.h>
 #else
 #  undef AF_NETLINK
 #endif
diff --git a/Modules/spwdmodule.c b/Modules/spwdmodule.c
deleted file mode 100644
index 13f1115feefa86..00000000000000
--- a/Modules/spwdmodule.c
+++ /dev/null
@@ -1,268 +0,0 @@
-
-/* UNIX shadow password file access module */
-/* A lot of code has been taken from pwdmodule.c */
-/* For info also see http://www.unixpapa.com/incnote/passwd.html */
-
-#include "Python.h"
-
-#include <sys/types.h>
-#ifdef HAVE_SHADOW_H
-#include <shadow.h>
-#endif
-
-#include "clinic/spwdmodule.c.h"
-
-/*[clinic input]
-module spwd
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=c0b841b90a6a07ce]*/
-
-PyDoc_STRVAR(spwd__doc__,
-"This module provides access to the Unix shadow password database.\n\
-It is available on various Unix versions.\n\
-\n\
-Shadow password database entries are reported as 9-tuples of type struct_spwd,\n\
-containing the following items from the password database (see `<shadow.h>'):\n\
-sp_namp, sp_pwdp, sp_lstchg, sp_min, sp_max, sp_warn, sp_inact, sp_expire, sp_flag.\n\
-The sp_namp and sp_pwdp are strings, the rest are integers.\n\
-An exception is raised if the entry asked for cannot be found.\n\
-You have to be root to be able to use this module.");
-
-
-#if defined(HAVE_GETSPNAM) || defined(HAVE_GETSPENT)
-
-static PyStructSequence_Field struct_spwd_type_fields[] = {
-    {"sp_namp", "login name"},
-    {"sp_pwdp", "encrypted password"},
-    {"sp_lstchg", "date of last change"},
-    {"sp_min", "min #days between changes"},
-    {"sp_max", "max #days between changes"},
-    {"sp_warn", "#days before pw expires to warn user about it"},
-    {"sp_inact", "#days after pw expires until account is disabled"},
-    {"sp_expire", "#days since 1970-01-01 when account expires"},
-    {"sp_flag", "reserved"},
-    {"sp_nam", "login name; deprecated"}, /* Backward compatibility */
-    {"sp_pwd", "encrypted password; deprecated"}, /* Backward compatibility */
-    {0}
-};
-
-PyDoc_STRVAR(struct_spwd__doc__,
-"spwd.struct_spwd: Results from getsp*() routines.\n\n\
-This object may be accessed either as a 9-tuple of\n\
-  (sp_namp,sp_pwdp,sp_lstchg,sp_min,sp_max,sp_warn,sp_inact,sp_expire,sp_flag)\n\
-or via the object attributes as named in the above tuple.");
-
-static PyStructSequence_Desc struct_spwd_type_desc = {
-    "spwd.struct_spwd",
-    struct_spwd__doc__,
-    struct_spwd_type_fields,
-    9,
-};
-
-typedef struct {
-    PyTypeObject *StructSpwdType;
-} spwdmodulestate;
-
-static inline spwdmodulestate*
-get_spwd_state(PyObject *module)
-{
-    void *state = PyModule_GetState(module);
-    assert(state != NULL);
-    return (spwdmodulestate *)state;
-}
-
-static struct PyModuleDef spwdmodule;
-
-static void
-sets(PyObject *v, int i, const char* val)
-{
-  if (val) {
-      PyObject *o = PyUnicode_DecodeFSDefault(val);
-      PyStructSequence_SET_ITEM(v, i, o);
-  } else {
-      PyStructSequence_SET_ITEM(v, i, Py_None);
-      Py_INCREF(Py_None);
-  }
-}
-
-static PyObject *mkspent(PyObject *module, struct spwd *p)
-{
-    int setIndex = 0;
-    PyObject *v = PyStructSequence_New(get_spwd_state(module)->StructSpwdType);
-    if (v == NULL)
-        return NULL;
-
-#define SETI(i,val) PyStructSequence_SET_ITEM(v, i, PyLong_FromLong((long) val))
-#define SETS(i,val) sets(v, i, val)
-
-    SETS(setIndex++, p->sp_namp);
-    SETS(setIndex++, p->sp_pwdp);
-    SETI(setIndex++, p->sp_lstchg);
-    SETI(setIndex++, p->sp_min);
-    SETI(setIndex++, p->sp_max);
-    SETI(setIndex++, p->sp_warn);
-    SETI(setIndex++, p->sp_inact);
-    SETI(setIndex++, p->sp_expire);
-    SETI(setIndex++, p->sp_flag);
-    SETS(setIndex++, p->sp_namp); /* Backward compatibility for sp_nam */
-    SETS(setIndex++, p->sp_pwdp); /* Backward compatibility for sp_pwd */
-
-#undef SETS
-#undef SETI
-
-    if (PyErr_Occurred()) {
-        Py_DECREF(v);
-        return NULL;
-    }
-
-    return v;
-}
-
-#endif  /* HAVE_GETSPNAM || HAVE_GETSPENT */
-
-
-#ifdef HAVE_GETSPNAM
-
-/*[clinic input]
-spwd.getspnam
-
-    arg: unicode
-    /
-
-Return the shadow password database entry for the given user name.
-
-See `help(spwd)` for more on shadow password database entries.
-[clinic start generated code]*/
-
-static PyObject *
-spwd_getspnam_impl(PyObject *module, PyObject *arg)
-/*[clinic end generated code: output=701250cf57dc6ebe input=dd89429e6167a00f]*/
-{
-    char *name;
-    struct spwd *p;
-    PyObject *bytes, *retval = NULL;
-
-    if ((bytes = PyUnicode_EncodeFSDefault(arg)) == NULL)
-        return NULL;
-    /* check for embedded null bytes */
-    if (PyBytes_AsStringAndSize(bytes, &name, NULL) == -1)
-        goto out;
-    if ((p = getspnam(name)) == NULL) {
-        if (errno != 0)
-            PyErr_SetFromErrno(PyExc_OSError);
-        else
-            PyErr_SetString(PyExc_KeyError, "getspnam(): name not found");
-        goto out;
-    }
-    retval = mkspent(module, p);
-out:
-    Py_DECREF(bytes);
-    return retval;
-}
-
-#endif /* HAVE_GETSPNAM */
-
-#ifdef HAVE_GETSPENT
-
-/*[clinic input]
-spwd.getspall
-
-Return a list of all available shadow password database entries, in arbitrary order.
-
-See `help(spwd)` for more on shadow password database entries.
-[clinic start generated code]*/
-
-static PyObject *
-spwd_getspall_impl(PyObject *module)
-/*[clinic end generated code: output=4fda298d6bf6d057 input=b2c84b7857d622bd]*/
-{
-    PyObject *d;
-    struct spwd *p;
-    if ((d = PyList_New(0)) == NULL)
-        return NULL;
-    setspent();
-    while ((p = getspent()) != NULL) {
-        PyObject *v = mkspent(module, p);
-        if (v == NULL || PyList_Append(d, v) != 0) {
-            Py_XDECREF(v);
-            Py_DECREF(d);
-            endspent();
-            return NULL;
-        }
-        Py_DECREF(v);
-    }
-    endspent();
-    return d;
-}
-
-#endif /* HAVE_GETSPENT */
-
-static PyMethodDef spwd_methods[] = {
-#ifdef HAVE_GETSPNAM
-    SPWD_GETSPNAM_METHODDEF
-#endif
-#ifdef HAVE_GETSPENT
-    SPWD_GETSPALL_METHODDEF
-#endif
-    {NULL,              NULL}           /* sentinel */
-};
-
-static int
-spwdmodule_exec(PyObject *module)
-{
-    spwdmodulestate *state = get_spwd_state(module);
-
-    state->StructSpwdType = PyStructSequence_NewType(&struct_spwd_type_desc);
-    if (state->StructSpwdType == NULL) {
-        return -1;
-    }
-    if (PyModule_AddType(module, state->StructSpwdType) < 0) {
-        return -1;
-    }
-    return 0;
-}
-
-static PyModuleDef_Slot spwdmodule_slots[] = {
-    {Py_mod_exec, spwdmodule_exec},
-    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
-    {0, NULL}
-};
-
-static int spwdmodule_traverse(PyObject *m, visitproc visit, void *arg) {
-    Py_VISIT(get_spwd_state(m)->StructSpwdType);
-    return 0;
-}
-
-static int spwdmodule_clear(PyObject *m) {
-    Py_CLEAR(get_spwd_state(m)->StructSpwdType);
-    return 0;
-}
-
-static void spwdmodule_free(void *m) {
-    spwdmodule_clear((PyObject *)m);
-}
-
-static struct PyModuleDef spwdmodule = {
-    PyModuleDef_HEAD_INIT,
-    .m_name = "spwd",
-    .m_doc = spwd__doc__,
-    .m_size = sizeof(spwdmodulestate),
-    .m_methods = spwd_methods,
-    .m_slots = spwdmodule_slots,
-    .m_traverse = spwdmodule_traverse,
-    .m_clear = spwdmodule_clear,
-    .m_free = spwdmodule_free,
-};
-
-PyMODINIT_FUNC
-PyInit_spwd(void)
-{
-    if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "'spwd' is deprecated and slated for removal in "
-                     "Python 3.13",
-                     7)) {
-        return NULL;
-    }
-
-    return PyModuleDef_Init(&spwdmodule);
-}
diff --git a/Modules/symtablemodule.c b/Modules/symtablemodule.c
index 1cc319cc3410d8..ddc9ac3324356d 100644
--- a/Modules/symtablemodule.c
+++ b/Modules/symtablemodule.c
@@ -1,4 +1,5 @@
 #include "Python.h"
+#include "pycore_pythonrun.h"     // _Py_SourceAsString()
 #include "pycore_symtable.h"      // struct symtable
 
 #include "clinic/symtablemodule.c.h"
@@ -85,6 +86,14 @@ symtable_init_constants(PyObject *m)
     if (PyModule_AddIntConstant(m, "TYPE_CLASS", ClassBlock) < 0) return -1;
     if (PyModule_AddIntConstant(m, "TYPE_MODULE", ModuleBlock) < 0)
         return -1;
+    if (PyModule_AddIntConstant(m, "TYPE_ANNOTATION", AnnotationBlock) < 0)
+        return -1;
+    if (PyModule_AddIntConstant(m, "TYPE_TYPE_VAR_BOUND", TypeVarBoundBlock) < 0)
+        return -1;
+    if (PyModule_AddIntConstant(m, "TYPE_TYPE_ALIAS", TypeAliasBlock) < 0)
+        return -1;
+    if (PyModule_AddIntConstant(m, "TYPE_TYPE_PARAM", TypeParamBlock) < 0)
+        return -1;
 
     if (PyModule_AddIntMacro(m, LOCAL) < 0) return -1;
     if (PyModule_AddIntMacro(m, GLOBAL_EXPLICIT) < 0) return -1;
diff --git a/Modules/syslogmodule.c b/Modules/syslogmodule.c
index 6db8de9c491dd9..6a44850e291448 100644
--- a/Modules/syslogmodule.c
+++ b/Modules/syslogmodule.c
@@ -49,6 +49,11 @@ Revision history:
 
 /* syslog module */
 
+// clinic/syslogmodule.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 #include "osdefs.h"               // SEP
 
diff --git a/Modules/termios.c b/Modules/termios.c
index 6dc8200572bc0c..1d97a3a2757966 100644
--- a/Modules/termios.c
+++ b/Modules/termios.c
@@ -1,11 +1,22 @@
 /* termios.c -- POSIX terminal I/O module implementation.  */
 
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #include "Python.h"
 
-/* Apparently, on SGI, termios.h won't define CTRL if _XOPEN_SOURCE
-   is defined, so we define it here. */
+// On QNX 6, struct termio must be declared by including sys/termio.h
+// if TCGETA, TCSETA, TCSETAW, or TCSETAF are used. sys/termio.h must
+// be included before termios.h or it will generate an error.
+#if defined(HAVE_SYS_TERMIO_H) && !defined(__hpux)
+#  include <sys/termio.h>
+#endif
+
+// Apparently, on SGI, termios.h won't define CTRL if _XOPEN_SOURCE
+// is defined, so we define it here.
 #if defined(__sgi)
-#define CTRL(c) ((c)&037)
+#  define CTRL(c) ((c)&037)
 #endif
 
 #if defined(__sun)
@@ -16,6 +27,9 @@
 
 #include <termios.h>
 #include <sys/ioctl.h>
+#if defined(__sun) && defined(__SVR4)
+#  include <unistd.h>             // ioctl()
+#endif
 
 /* HP-UX requires that this be included to pick up MDCD, MCTS, MDSR,
  * MDTR, MRI, and MRTS (apparently used internally by some things
@@ -106,7 +120,7 @@ termios_tcgetattr_impl(PyObject *module, int fd)
         v = PyBytes_FromStringAndSize(&ch, 1);
         if (v == NULL)
             goto err;
-        PyList_SetItem(cc, i, v);
+        PyList_SET_ITEM(cc, i, v);
     }
 
     /* Convert the MIN and TIME slots to integer.  On some systems, the
@@ -114,29 +128,44 @@ termios_tcgetattr_impl(PyObject *module, int fd)
        only do this in noncanonical input mode.  */
     if ((mode.c_lflag & ICANON) == 0) {
         v = PyLong_FromLong((long)mode.c_cc[VMIN]);
-        if (v == NULL)
+        if (v == NULL) {
             goto err;
-        PyList_SetItem(cc, VMIN, v);
+        }
+        if (PyList_SetItem(cc, VMIN, v) < 0) {
+            goto err;
+        }
         v = PyLong_FromLong((long)mode.c_cc[VTIME]);
-        if (v == NULL)
+        if (v == NULL) {
+            goto err;
+        }
+        if (PyList_SetItem(cc, VTIME, v) < 0) {
             goto err;
-        PyList_SetItem(cc, VTIME, v);
+        }
     }
 
-    if (!(v = PyList_New(7)))
-        goto err;
-
-    PyList_SetItem(v, 0, PyLong_FromLong((long)mode.c_iflag));
-    PyList_SetItem(v, 1, PyLong_FromLong((long)mode.c_oflag));
-    PyList_SetItem(v, 2, PyLong_FromLong((long)mode.c_cflag));
-    PyList_SetItem(v, 3, PyLong_FromLong((long)mode.c_lflag));
-    PyList_SetItem(v, 4, PyLong_FromLong((long)ispeed));
-    PyList_SetItem(v, 5, PyLong_FromLong((long)ospeed));
-    if (PyErr_Occurred()) {
-        Py_DECREF(v);
+    if (!(v = PyList_New(7))) {
         goto err;
     }
-    PyList_SetItem(v, 6, cc);
+
+#define ADD_LONG_ITEM(index, val) \
+    do { \
+        PyObject *l = PyLong_FromLong((long)val); \
+        if (l == NULL) { \
+            Py_DECREF(v); \
+            goto err; \
+        } \
+        PyList_SET_ITEM(v, index, l); \
+    } while (0)
+
+    ADD_LONG_ITEM(0, mode.c_iflag);
+    ADD_LONG_ITEM(1, mode.c_oflag);
+    ADD_LONG_ITEM(2, mode.c_cflag);
+    ADD_LONG_ITEM(3, mode.c_lflag);
+    ADD_LONG_ITEM(4, ispeed);
+    ADD_LONG_ITEM(5, ospeed);
+#undef ADD_LONG_ITEM
+
+    PyList_SET_ITEM(v, 6, cc);
     return v;
   err:
     Py_DECREF(cc);
@@ -183,17 +212,25 @@ termios_tcsetattr_impl(PyObject *module, int fd, int when, PyObject *term)
         return PyErr_SetFromErrno(state->TermiosError);
     }
 
-    mode.c_iflag = (tcflag_t) PyLong_AsLong(PyList_GetItem(term, 0));
-    mode.c_oflag = (tcflag_t) PyLong_AsLong(PyList_GetItem(term, 1));
-    mode.c_cflag = (tcflag_t) PyLong_AsLong(PyList_GetItem(term, 2));
-    mode.c_lflag = (tcflag_t) PyLong_AsLong(PyList_GetItem(term, 3));
-    speed_t ispeed = (speed_t) PyLong_AsLong(PyList_GetItem(term, 4));
-    speed_t ospeed = (speed_t) PyLong_AsLong(PyList_GetItem(term, 5));
-    PyObject *cc = PyList_GetItem(term, 6);
-    if (PyErr_Occurred()) {
-        return NULL;
-    }
-
+    speed_t ispeed, ospeed;
+#define SET_FROM_LIST(TYPE, VAR, LIST, N) do {  \
+    PyObject *item = PyList_GET_ITEM(LIST, N);  \
+    long num = PyLong_AsLong(item);             \
+    if (num == -1 && PyErr_Occurred()) {        \
+        return NULL;                            \
+    }                                           \
+    VAR = (TYPE)num;                            \
+} while (0)
+
+    SET_FROM_LIST(tcflag_t, mode.c_iflag, term, 0);
+    SET_FROM_LIST(tcflag_t, mode.c_oflag, term, 1);
+    SET_FROM_LIST(tcflag_t, mode.c_cflag, term, 2);
+    SET_FROM_LIST(tcflag_t, mode.c_lflag, term, 3);
+    SET_FROM_LIST(speed_t, ispeed, term, 4);
+    SET_FROM_LIST(speed_t, ospeed, term, 5);
+#undef SET_FROM_LIST
+
+    PyObject *cc = PyList_GET_ITEM(term, 6);
     if (!PyList_Check(cc) || PyList_Size(cc) != NCCS) {
         PyErr_Format(PyExc_TypeError,
             "tcsetattr: attributes[6] must be %d element list",
@@ -208,8 +245,13 @@ termios_tcsetattr_impl(PyObject *module, int fd, int when, PyObject *term)
 
         if (PyBytes_Check(v) && PyBytes_Size(v) == 1)
             mode.c_cc[i] = (cc_t) * PyBytes_AsString(v);
-        else if (PyLong_Check(v))
-            mode.c_cc[i] = (cc_t) PyLong_AsLong(v);
+        else if (PyLong_Check(v)) {
+            long num = PyLong_AsLong(v);
+            if (num == -1 && PyErr_Occurred()) {
+                return NULL;
+            }
+            mode.c_cc[i] = (cc_t)num;
+        }
         else {
             PyErr_SetString(PyExc_TypeError,
      "tcsetattr: elements of attributes must be characters or integers");
@@ -660,6 +702,9 @@ static struct constant {
 #ifdef IMAXBEL
     {"IMAXBEL", IMAXBEL},
 #endif
+#ifdef IUTF8
+    {"IUTF8", IUTF8},
+#endif
 
     /* struct termios.c_oflag constants */
     {"OPOST", OPOST},
@@ -684,6 +729,12 @@ static struct constant {
 #ifdef OFDEL
     {"OFDEL", OFDEL},
 #endif
+#ifdef OXTABS
+    {"OXTABS", OXTABS},
+#endif
+#ifdef ONOEOT
+    {"ONOEOT", ONOEOT},
+#endif
 #ifdef NLDLY
     {"NLDLY", NLDLY},
 #endif
@@ -710,6 +761,12 @@ static struct constant {
 #ifdef NL1
     {"NL1", NL1},
 #endif
+#ifdef NL2
+    {"NL2", NL2},
+#endif
+#ifdef NL3
+    {"NL3", NL3},
+#endif
 #ifdef CR0
     {"CR0", CR0},
 #endif
@@ -757,6 +814,9 @@ static struct constant {
 #endif
 
     /* struct termios.c_cflag constants */
+#ifdef CIGNORE
+    {"CIGNORE", CIGNORE},
+#endif
     {"CSIZE", CSIZE},
     {"CSTOPB", CSTOPB},
     {"CREAD", CREAD},
@@ -771,6 +831,22 @@ static struct constant {
     {"CRTSCTS", (long)CRTSCTS},
 #endif
 
+#ifdef CRTS_IFLOW
+    {"CRTS_IFLOW", CRTS_IFLOW},
+#endif
+#ifdef CDTR_IFLOW
+    {"CDTR_IFLOW", CDTR_IFLOW},
+#endif
+#ifdef CDSR_OFLOW
+    {"CDSR_OFLOW", CDSR_OFLOW},
+#endif
+#ifdef CCAR_OFLOW
+    {"CCAR_OFLOW", CCAR_OFLOW},
+#endif
+#ifdef MDMBUF
+    {"MDMBUF", MDMBUF},
+#endif
+
     /* struct termios.c_cflag-related values (character size) */
     {"CS5", CS5},
     {"CS6", CS6},
@@ -778,6 +854,9 @@ static struct constant {
     {"CS8", CS8},
 
     /* struct termios.c_lflag constants */
+#ifdef ALTWERASE
+    {"ALTWERASE", ALTWERASE},
+#endif
     {"ISIG", ISIG},
     {"ICANON", ICANON},
 #ifdef XCASE
@@ -798,6 +877,9 @@ static struct constant {
 #endif
 #ifdef FLUSHO
     {"FLUSHO", FLUSHO},
+#endif
+#ifdef NOKERNINFO
+    {"NOKERNINFO", NOKERNINFO},
 #endif
     {"NOFLSH", NOFLSH},
     {"TOSTOP", TOSTOP},
@@ -805,6 +887,9 @@ static struct constant {
     {"PENDIN", PENDIN},
 #endif
     {"IEXTEN", IEXTEN},
+#ifdef EXTPROC
+    {"EXTPROC", EXTPROC},
+#endif
 
     /* indexes into the control chars array returned by tcgetattr() */
     {"VINTR", VINTR},
@@ -813,6 +898,9 @@ static struct constant {
     {"VKILL", VKILL},
     {"VEOF", VEOF},
     {"VTIME", VTIME},
+#ifdef VSTATUS
+    {"VSTATUS", VSTATUS},
+#endif
     {"VMIN", VMIN},
 #ifdef VSWTC
     /* The #defines above ensure that if either is defined, both are,
@@ -823,6 +911,9 @@ static struct constant {
     {"VSTART", VSTART},
     {"VSTOP", VSTOP},
     {"VSUSP", VSUSP},
+#ifdef VDSUSP
+    {"VDSUSP", VREPRINT},
+#endif
     {"VEOL", VEOL},
 #ifdef VREPRINT
     {"VREPRINT", VREPRINT},
@@ -841,6 +932,18 @@ static struct constant {
 #endif
 
 
+#ifdef B7200
+    {"B7200", B7200},
+#endif
+#ifdef B14400
+    {"B14400", B14400},
+#endif
+#ifdef B28800
+    {"B28800", B28800},
+#endif
+#ifdef B76800
+    {"B76800", B76800},
+#endif
 #ifdef B460800
     {"B460800", B460800},
 #endif
@@ -1232,12 +1335,7 @@ termios_exec(PyObject *mod)
     struct constant *constant = termios_constants;
     termiosmodulestate *state = get_termios_state(mod);
     state->TermiosError = PyErr_NewException("termios.error", NULL, NULL);
-    if (state->TermiosError == NULL) {
-        return -1;
-    }
-    Py_INCREF(state->TermiosError);
-    if (PyModule_AddObject(mod, "error", state->TermiosError) < 0) {
-        Py_DECREF(state->TermiosError);
+    if (PyModule_AddObjectRef(mod, "error", state->TermiosError) < 0) {
         return -1;
     }
 
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 3607855dbd8f27..b3fe175d9b184a 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -6,22 +6,21 @@
 #include "pycore_namespace.h"     // _PyNamespace_New()
 #include "pycore_runtime.h"       // _Py_ID()
 
-#include <ctype.h>
-
+#include <time.h>                 // clock()
 #ifdef HAVE_SYS_TIMES_H
-#  include <sys/times.h>
+#  include <sys/times.h>          // times()
 #endif
 #ifdef HAVE_SYS_TYPES_H
 #  include <sys/types.h>
 #endif
 #if defined(HAVE_SYS_RESOURCE_H)
-#  include <sys/resource.h>
+#  include <sys/resource.h>       // getrusage(RUSAGE_SELF)
 #endif
 #ifdef QUICKWIN
 # include <io.h>
 #endif
 #if defined(HAVE_PTHREAD_H)
-#  include <pthread.h>
+#  include <pthread.h>            // pthread_getcpuclockid()
 #endif
 #if defined(_AIX)
 #   include <sys/thread.h>
@@ -64,54 +63,10 @@
 #define SEC_TO_NS (1000 * 1000 * 1000)
 
 
-#if defined(HAVE_TIMES) || defined(HAVE_CLOCK)
-static int
-check_ticks_per_second(long tps, const char *context)
-{
-    /* Effectively, check that _PyTime_MulDiv(t, SEC_TO_NS, ticks_per_second)
-       cannot overflow. */
-    if (tps >= 0 && (_PyTime_t)tps > _PyTime_MAX / SEC_TO_NS) {
-        PyErr_Format(PyExc_OverflowError, "%s is too large", context);
-        return -1;
-    }
-    return 0;
-}
-#endif  /* HAVE_TIMES || HAVE_CLOCK */
-
-#ifdef HAVE_TIMES
-
-# define ticks_per_second _PyRuntime.time.ticks_per_second
-
-static void
-ensure_ticks_per_second(void)
-{
-    if (_PyRuntime.time.ticks_per_second_initialized) {
-        return;
-    }
-    _PyRuntime.time.ticks_per_second_initialized = 1;
-# if defined(HAVE_SYSCONF) && defined(_SC_CLK_TCK)
-    ticks_per_second = sysconf(_SC_CLK_TCK);
-    if (ticks_per_second < 1) {
-        ticks_per_second = -1;
-    }
-# elif defined(HZ)
-    ticks_per_second = HZ;
-# else
-    ticks_per_second = 60;  /* magic fallback value; may be bogus */
-# endif
-}
-
-#endif  /* HAVE_TIMES */
-
-
-PyStatus
-_PyTime_Init(void)
-{
-#ifdef HAVE_TIMES
-    ensure_ticks_per_second();
-#endif
-    return PyStatus_Ok();
-}
+/*[clinic input]
+module time
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=a668a08771581f36]*/
 
 
 /* Forward declarations */
@@ -120,6 +75,14 @@ static int pysleep(_PyTime_t timeout);
 
 typedef struct {
     PyTypeObject *struct_time_type;
+#ifdef HAVE_TIMES
+    // times() clock frequency in hertz
+    _PyTimeFraction times_base;
+#endif
+#ifdef HAVE_CLOCK
+    // clock() frequency in hertz
+    _PyTimeFraction clock_base;
+#endif
 } time_module_state;
 
 static inline time_module_state*
@@ -179,7 +142,7 @@ PyDoc_STRVAR(time_ns_doc,
 \n\
 Return the current time in nanoseconds since the Epoch.");
 
-#if defined(HAVE_CLOCK)
+#ifdef HAVE_CLOCK
 
 #ifndef CLOCKS_PER_SEC
 #  ifdef CLK_TCK
@@ -190,15 +153,13 @@ Return the current time in nanoseconds since the Epoch.");
 #endif
 
 static int
-_PyTime_GetClockWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
+py_clock(time_module_state *state, _PyTime_t *tp, _Py_clock_info_t *info)
 {
-    if (check_ticks_per_second(CLOCKS_PER_SEC, "CLOCKS_PER_SEC") < 0) {
-        return -1;
-    }
+    _PyTimeFraction *base = &state->clock_base;
 
     if (info) {
         info->implementation = "clock()";
-        info->resolution = 1.0 / (double)CLOCKS_PER_SEC;
+        info->resolution = _PyTimeFraction_Resolution(base);
         info->monotonic = 1;
         info->adjustable = 0;
     }
@@ -210,7 +171,7 @@ _PyTime_GetClockWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
                         "or its value cannot be represented");
         return -1;
     }
-    _PyTime_t ns = _PyTime_MulDiv(ticks, SEC_TO_NS, (_PyTime_t)CLOCKS_PER_SEC);
+    _PyTime_t ns = _PyTimeFraction_Mul(ticks, base);
     *tp = _PyTime_FromNanoseconds(ns);
     return 0;
 }
@@ -228,23 +189,52 @@ _PyTime_GetClockWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
 #pragma clang diagnostic ignored "-Wunguarded-availability"
 #endif
 
-static PyObject *
-time_clock_gettime(PyObject *self, PyObject *args)
+static int
+time_clockid_converter(PyObject *obj, clockid_t *p)
 {
-    int ret;
-    struct timespec tp;
-
-#if defined(_AIX) && (SIZEOF_LONG == 8)
-    long clk_id;
-    if (!PyArg_ParseTuple(args, "l:clock_gettime", &clk_id)) {
+#ifdef _AIX
+    long long clk_id = PyLong_AsLongLong(obj);
 #else
-    int clk_id;
-    if (!PyArg_ParseTuple(args, "i:clock_gettime", &clk_id)) {
+    int clk_id = PyLong_AsInt(obj);
 #endif
-        return NULL;
+    if (clk_id == -1 && PyErr_Occurred()) {
+        PyErr_Format(PyExc_TypeError,
+                     "clk_id should be integer, not %s",
+                     _PyType_Name(Py_TYPE(obj)));
+        return 0;
     }
 
-    ret = clock_gettime((clockid_t)clk_id, &tp);
+    // Make sure that we picked the right type (check sizes type)
+    Py_BUILD_ASSERT(sizeof(clk_id) == sizeof(*p));
+    *p = (clockid_t)clk_id;
+    return 1;
+}
+
+/*[python input]
+
+class clockid_t_converter(CConverter):
+    type = "clockid_t"
+    converter = 'time_clockid_converter'
+
+[python start generated code]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=53867111501f46c8]*/
+
+
+/*[clinic input]
+time.clock_gettime
+
+    clk_id: clockid_t
+    /
+
+Return the time of the specified clock clk_id as a float.
+[clinic start generated code]*/
+
+static PyObject *
+time_clock_gettime_impl(PyObject *module, clockid_t clk_id)
+/*[clinic end generated code: output=832b9ebc03328020 input=7e89fcc42ca15e5d]*/
+{
+    struct timespec tp;
+    int ret = clock_gettime(clk_id, &tp);
     if (ret != 0) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
@@ -252,38 +242,32 @@ time_clock_gettime(PyObject *self, PyObject *args)
     return PyFloat_FromDouble(tp.tv_sec + tp.tv_nsec * 1e-9);
 }
 
-PyDoc_STRVAR(clock_gettime_doc,
-"clock_gettime(clk_id) -> float\n\
-\n\
-Return the time of the specified clock clk_id.");
+/*[clinic input]
+time.clock_gettime_ns
+
+    clk_id: clockid_t
+    /
+
+Return the time of the specified clock clk_id as nanoseconds (int).
+[clinic start generated code]*/
 
 static PyObject *
-time_clock_gettime_ns(PyObject *self, PyObject *args)
+time_clock_gettime_ns_impl(PyObject *module, clockid_t clk_id)
+/*[clinic end generated code: output=4a045c3a36e60044 input=aabc248db8c8e3e5]*/
 {
-    int ret;
-    int clk_id;
     struct timespec ts;
-    _PyTime_t t;
-
-    if (!PyArg_ParseTuple(args, "i:clock_gettime", &clk_id)) {
-        return NULL;
-    }
-
-    ret = clock_gettime((clockid_t)clk_id, &ts);
+    int ret = clock_gettime(clk_id, &ts);
     if (ret != 0) {
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
     }
+
+    _PyTime_t t;
     if (_PyTime_FromTimespec(&t, &ts) < 0) {
         return NULL;
     }
     return _PyTime_AsNanosecondsObject(t);
 }
-
-PyDoc_STRVAR(clock_gettime_ns_doc,
-"clock_gettime_ns(clk_id) -> int\n\
-\n\
-Return the time of the specified clock clk_id as nanoseconds.");
 #endif   /* HAVE_CLOCK_GETTIME */
 
 #ifdef HAVE_CLOCK_SETTIME
@@ -414,6 +398,10 @@ Return the clk_id of a thread's CPU time clock.");
 static PyObject *
 time_sleep(PyObject *self, PyObject *timeout_obj)
 {
+    if (PySys_Audit("time.sleep", "O", timeout_obj) < 0) {
+        return NULL;
+    }
+
     _PyTime_t timeout;
     if (_PyTime_FromSecondsObject(&timeout, timeout_obj, _PyTime_ROUND_TIMEOUT))
         return NULL;
@@ -1245,8 +1233,38 @@ PyDoc_STRVAR(perf_counter_ns_doc,
 \n\
 Performance counter for benchmarking as nanoseconds.");
 
+
+#ifdef HAVE_TIMES
+static int
+process_time_times(time_module_state *state, _PyTime_t *tp,
+                   _Py_clock_info_t *info)
+{
+    _PyTimeFraction *base = &state->times_base;
+
+    struct tms process;
+    if (times(&process) == (clock_t)-1) {
+        return 0;
+    }
+
+    if (info) {
+        info->implementation = "times()";
+        info->resolution = _PyTimeFraction_Resolution(base);
+        info->monotonic = 1;
+        info->adjustable = 0;
+    }
+
+    _PyTime_t ns;
+    ns = _PyTimeFraction_Mul(process.tms_utime, base);
+    ns += _PyTimeFraction_Mul(process.tms_stime, base);
+    *tp = _PyTime_FromNanoseconds(ns);
+    return 1;
+}
+#endif
+
+
 static int
-_PyTime_GetProcessTimeWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
+py_process_time(time_module_state *state, _PyTime_t *tp,
+                _Py_clock_info_t *info)
 {
 #if defined(MS_WINDOWS)
     HANDLE process;
@@ -1349,41 +1367,27 @@ _PyTime_GetProcessTimeWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
 
     /* times() */
 #ifdef HAVE_TIMES
-    struct tms t;
-
-    if (times(&t) != (clock_t)-1) {
-        assert(_PyRuntime.time.ticks_per_second_initialized);
-        if (check_ticks_per_second(ticks_per_second, "_SC_CLK_TCK") < 0) {
-            return -1;
-        }
-        if (ticks_per_second != -1) {
-            if (info) {
-                info->implementation = "times()";
-                info->monotonic = 1;
-                info->adjustable = 0;
-                info->resolution = 1.0 / (double)ticks_per_second;
-            }
-
-            _PyTime_t ns;
-            ns = _PyTime_MulDiv(t.tms_utime, SEC_TO_NS, ticks_per_second);
-            ns += _PyTime_MulDiv(t.tms_stime, SEC_TO_NS, ticks_per_second);
-            *tp = _PyTime_FromNanoseconds(ns);
-            return 0;
-        }
+    int res = process_time_times(state, tp, info);
+    if (res < 0) {
+        return -1;
     }
+    if (res == 1) {
+        return 0;
+    }
+    // times() failed, ignore failure
 #endif
 
-    /* clock */
-    /* Currently, Python 3 requires clock() to build: see issue #22624 */
-    return _PyTime_GetClockWithInfo(tp, info);
+    /* clock(). Python 3 requires clock() to build (see gh-66814) */
+    return py_clock(state, tp, info);
 #endif
 }
 
 static PyObject *
-time_process_time(PyObject *self, PyObject *unused)
+time_process_time(PyObject *module, PyObject *unused)
 {
+    time_module_state *state = get_time_state(module);
     _PyTime_t t;
-    if (_PyTime_GetProcessTimeWithInfo(&t, NULL) < 0) {
+    if (py_process_time(state, &t, NULL) < 0) {
         return NULL;
     }
     return _PyFloat_FromPyTime(t);
@@ -1395,10 +1399,11 @@ PyDoc_STRVAR(process_time_doc,
 Process time for profiling: sum of the kernel and user-space CPU time.");
 
 static PyObject *
-time_process_time_ns(PyObject *self, PyObject *unused)
+time_process_time_ns(PyObject *module, PyObject *unused)
 {
+    time_module_state *state = get_time_state(module);
     _PyTime_t t;
-    if (_PyTime_GetProcessTimeWithInfo(&t, NULL) < 0) {
+    if (py_process_time(state, &t, NULL) < 0) {
         return NULL;
     }
     return _PyTime_AsNanosecondsObject(t);
@@ -1585,7 +1590,7 @@ sum of the kernel and user-space CPU time.");
 
 
 static PyObject *
-time_get_clock_info(PyObject *self, PyObject *args)
+time_get_clock_info(PyObject *module, PyObject *args)
 {
     char *name;
     _Py_clock_info_t info;
@@ -1624,7 +1629,8 @@ time_get_clock_info(PyObject *self, PyObject *args)
         }
     }
     else if (strcmp(name, "process_time") == 0) {
-        if (_PyTime_GetProcessTimeWithInfo(&t, &info) < 0) {
+        time_module_state *state = get_time_state(module);
+        if (py_process_time(state, &t, &info) < 0) {
             return NULL;
         }
     }
@@ -1737,6 +1743,12 @@ get_gmtoff(time_t t, struct tm *p)
 static int
 init_timezone(PyObject *m)
 {
+#define ADD_INT(NAME, VALUE) do {                       \
+    if (PyModule_AddIntConstant(m, NAME, VALUE) < 0) {  \
+        return -1;                                      \
+    }                                                   \
+} while (0)
+
     assert(!PyErr_Occurred());
 
     /* This code moved from PyInit_time wholesale to allow calling it from
@@ -1760,13 +1772,13 @@ init_timezone(PyObject *m)
 #if !defined(MS_WINDOWS) || defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_SYSTEM)
     tzset();
 #endif
-    PyModule_AddIntConstant(m, "timezone", _Py_timezone);
+    ADD_INT("timezone", _Py_timezone);
 #ifdef HAVE_ALTZONE
-    PyModule_AddIntConstant(m, "altzone", altzone);
+    ADD_INT("altzone", altzone);
 #else
-    PyModule_AddIntConstant(m, "altzone", _Py_timezone-3600);
+    ADD_INT("altzone", _Py_timezone-3600);
 #endif
-    PyModule_AddIntConstant(m, "daylight", _Py_daylight);
+    ADD_INT("daylight", _Py_daylight);
 #ifdef MS_WINDOWS
     TIME_ZONE_INFORMATION tzinfo = {0};
     GetTimeZoneInformation(&tzinfo);
@@ -1790,11 +1802,9 @@ init_timezone(PyObject *m)
         return -1;
     }
 #endif // MS_WINDOWS
-    PyObject *tzname_obj = Py_BuildValue("(NN)", otz0, otz1);
-    if (tzname_obj == NULL) {
+    if (PyModule_Add(m, "tzname", Py_BuildValue("(NN)", otz0, otz1)) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "tzname", tzname_obj);
 #else // !HAVE_DECL_TZNAME
     static const time_t YEAR = (365 * 24 + 6) * 3600;
     time_t t;
@@ -1827,21 +1837,21 @@ init_timezone(PyObject *m)
     PyObject *tzname_obj;
     if (janzone < julyzone) {
         /* DST is reversed in the southern hemisphere */
-        PyModule_AddIntConstant(m, "timezone", julyzone);
-        PyModule_AddIntConstant(m, "altzone", janzone);
-        PyModule_AddIntConstant(m, "daylight", janzone != julyzone);
+        ADD_INT("timezone", julyzone);
+        ADD_INT("altzone", janzone);
+        ADD_INT("daylight", janzone != julyzone);
         tzname_obj = Py_BuildValue("(zz)", julyname, janname);
     } else {
-        PyModule_AddIntConstant(m, "timezone", janzone);
-        PyModule_AddIntConstant(m, "altzone", julyzone);
-        PyModule_AddIntConstant(m, "daylight", janzone != julyzone);
+        ADD_INT("timezone", janzone);
+        ADD_INT("altzone", julyzone);
+        ADD_INT("daylight", janzone != julyzone);
         tzname_obj = Py_BuildValue("(zz)", janname, julyname);
     }
-    if (tzname_obj == NULL) {
+    if (PyModule_Add(m, "tzname", tzname_obj) < 0) {
         return -1;
     }
-    PyModule_AddObject(m, "tzname", tzname_obj);
 #endif // !HAVE_DECL_TZNAME
+#undef ADD_INT
 
     if (PyErr_Occurred()) {
         return -1;
@@ -1850,12 +1860,16 @@ init_timezone(PyObject *m)
 }
 
 
+// Include Argument Clinic code after defining converters such as
+// time_clockid_converter().
+#include "clinic/timemodule.c.h"
+
 static PyMethodDef time_methods[] = {
     {"time",            time_time, METH_NOARGS, time_doc},
     {"time_ns",         time_time_ns, METH_NOARGS, time_ns_doc},
 #ifdef HAVE_CLOCK_GETTIME
-    {"clock_gettime",   time_clock_gettime, METH_VARARGS, clock_gettime_doc},
-    {"clock_gettime_ns",time_clock_gettime_ns, METH_VARARGS, clock_gettime_ns_doc},
+    TIME_CLOCK_GETTIME_METHODDEF
+    TIME_CLOCK_GETTIME_NS_METHODDEF
 #endif
 #ifdef HAVE_CLOCK_SETTIME
     {"clock_settime",   time_clock_settime, METH_VARARGS, clock_settime_doc},
@@ -2076,6 +2090,28 @@ time_exec(PyObject *module)
     }
 #endif
 
+#ifdef HAVE_TIMES
+    long ticks_per_second;
+    if (_Py_GetTicksPerSecond(&ticks_per_second) < 0) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "cannot read ticks_per_second");
+        return -1;
+    }
+    if (_PyTimeFraction_Set(&state->times_base, SEC_TO_NS,
+                            ticks_per_second) < 0) {
+        PyErr_Format(PyExc_OverflowError, "ticks_per_second is too large");
+        return -1;
+    }
+#endif
+
+#ifdef HAVE_CLOCK
+    if (_PyTimeFraction_Set(&state->clock_base, SEC_TO_NS,
+                            CLOCKS_PER_SEC) < 0) {
+        PyErr_Format(PyExc_OverflowError, "CLOCKS_PER_SEC is too large");
+        return -1;
+    }
+#endif
+
     return 0;
 }
 
diff --git a/Modules/unicodedata.c b/Modules/unicodedata.c
index 41dcd5f8f883f2..6ae35b9372b830 100644
--- a/Modules/unicodedata.c
+++ b/Modules/unicodedata.c
@@ -16,13 +16,11 @@
 #  define Py_BUILD_CORE_MODULE 1
 #endif
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 #include "pycore_ucnhash.h"       // _PyUnicode_Name_CAPI
-#include "structmember.h"         // PyMemberDef
 
 #include <stdbool.h>
+#include <stddef.h>               // offsetof()
 
 /*[clinic input]
 module unicodedata
@@ -84,7 +82,7 @@ typedef struct previous_version {
 #define get_old_record(self, v)    ((((PreviousDBVersion*)self)->getrecord)(v))
 
 static PyMemberDef DB_members[] = {
-        {"unidata_version", T_STRING, offsetof(PreviousDBVersion, name), READONLY},
+        {"unidata_version", Py_T_STRING, offsetof(PreviousDBVersion, name), Py_READONLY},
         {NULL}
 };
 
@@ -864,10 +862,6 @@ unicodedata_UCD_is_normalized_impl(PyObject *self, PyObject *form,
                                    PyObject *input)
 /*[clinic end generated code: output=11e5a3694e723ca5 input=a544f14cea79e508]*/
 {
-    if (PyUnicode_READY(input) == -1) {
-        return NULL;
-    }
-
     if (PyUnicode_GET_LENGTH(input) == 0) {
         /* special case empty input strings. */
         Py_RETURN_TRUE;
@@ -983,21 +977,6 @@ unicodedata_UCD_normalize_impl(PyObject *self, PyObject *form,
 /* -------------------------------------------------------------------- */
 /* database code (cut and pasted from the unidb package) */
 
-static unsigned long
-_gethash(const char *s, int len, int scale)
-{
-    int i;
-    unsigned long h = 0;
-    unsigned long ix;
-    for (i = 0; i < len; i++) {
-        h = (h * scale) + (unsigned char) Py_TOUPPER(s[i]);
-        ix = h & 0xff000000;
-        if (ix)
-            h = (h ^ ((ix>>24) & 0xff)) & 0x00ffffff;
-    }
-    return h;
-}
-
 static const char * const hangul_syllables[][3] = {
     { "G",  "A",   ""   },
     { "GG", "AE",  "G"  },
@@ -1041,6 +1020,7 @@ is_unified_ideograph(Py_UCS4 code)
         (0x2B740 <= code && code <= 0x2B81D) || /* CJK Ideograph Extension D */
         (0x2B820 <= code && code <= 0x2CEA1) || /* CJK Ideograph Extension E */
         (0x2CEB0 <= code && code <= 0x2EBE0) || /* CJK Ideograph Extension F */
+        (0x2EBF0 <= code && code <= 0x2EE5D) || /* CJK Ideograph Extension I */
         (0x30000 <= code && code <= 0x3134A) || /* CJK Ideograph Extension G */
         (0x31350 <= code && code <= 0x323AF);   /* CJK Ideograph Extension H */
 }
@@ -1051,6 +1031,247 @@ is_unified_ideograph(Py_UCS4 code)
 #define IS_NAMED_SEQ(cp) ((cp >= named_sequences_start) && \
                           (cp < named_sequences_end))
 
+
+// DAWG decoding functions
+
+static unsigned int
+_dawg_decode_varint_unsigned(unsigned int index, unsigned int* result)
+{
+    unsigned int res = 0;
+    unsigned int shift = 0;
+    for (;;) {
+        unsigned char byte = packed_name_dawg[index];
+        res |= (byte & 0x7f) << shift;
+        index++;
+        shift += 7;
+        if (!(byte & 0x80)) {
+            *result = res;
+            return index;
+        }
+    }
+}
+
+static int
+_dawg_match_edge(const char* name, unsigned int namelen, unsigned int size,
+                 unsigned int label_offset, unsigned int namepos)
+{
+    // This returns 1 if the edge matched, 0 if it didn't (but further edges
+    // could match) and -1 if the name cannot match at all.
+    if (size > 1 && namepos + size > namelen) {
+        return 0;
+    }
+    for (unsigned int i = 0; i < size; i++) {
+        if (packed_name_dawg[label_offset + i] != Py_TOUPPER(name[namepos + i])) {
+            if (i > 0) {
+                return -1; // cannot match at all
+            }
+            return 0;
+        }
+    }
+    return 1;
+}
+
+// reading DAWG node information:
+// a node is encoded by a varint. The lowest bit of that int is set if the node
+// is a final, accepting state. The higher bits of that int represent the
+// number of names that are encoded by the sub-DAWG started by this node. It's
+// used to compute the position of a name.
+//
+// the starting node of the DAWG is at position 0.
+//
+// the varint representing a node is followed by the node's edges, the encoding
+// is described below
+
+
+static unsigned int
+_dawg_decode_node(unsigned int node_offset, bool* final)
+{
+    unsigned int num;
+    node_offset = _dawg_decode_varint_unsigned(node_offset, &num);
+    *final = num & 1;
+    return node_offset;
+}
+
+static bool
+_dawg_node_is_final(unsigned int node_offset)
+{
+    unsigned int num;
+    _dawg_decode_varint_unsigned(node_offset, &num);
+    return num & 1;
+}
+
+static unsigned int
+_dawg_node_descendant_count(unsigned int node_offset)
+{
+    unsigned int num;
+    _dawg_decode_varint_unsigned(node_offset, &num);
+    return num >> 1;
+}
+
+
+// reading DAWG edge information:
+// a DAWG edge is comprised of the following information:
+// (1) the size of the label of the string attached to the edge
+// (2) the characters of that edge
+// (3) the target node
+// (4) whether the edge is the last edge in the list of edges following a node
+//
+// this information is encoded in a compact form as follows:
+//
+// +---------+-----------------+--------------+--------------------
+// |  varint | size (if != 1)  | label chars  | ... next edge ...
+// +---------+-----------------+--------------+--------------------
+//
+// - first comes a varint
+//     - the lowest bit of that varint is whether the edge is final (4)
+//     - the second lowest bit of that varint is true if the size of
+//       the length of the label is 1 (1)
+//     - the rest of the varint is an offset that can be used to compute
+//       the offset of the target node of that edge (3)
+//  - if the size is not 1, the first varint is followed by a
+//    character encoding the number of characters of the label (1)
+//    (unicode character names aren't larger than 256 bytes, therefore each
+//    edge label can be at most 256 chars, but is usually smaller)
+//  - the next size bytes are the characters of the label (2)
+//
+// the offset of the target node is computed as follows: the number in the
+// upper bits of the varint needs to be added to the offset of the target node
+// of the previous edge. For the first edge, where there is no previous target
+// node, the offset of the first edge is used.
+// The intuition here is that edges going out from a node often lead to nodes
+// that are close by, leading to small offsets from the current node and thus
+// fewer bytes.
+//
+// There is a special case: if a final node has no outgoing edges, it has to be
+// followed by a 0 byte to indicate that there are no edges (because the end of
+// the edge list is normally indicated in a bit in the edge encoding). This is
+// indicated by _dawg_decode_edge returning -1
+
+
+static int
+_dawg_decode_edge(bool is_first_edge, unsigned int prev_target_node_offset,
+                  unsigned int edge_offset, unsigned int* size,
+                  unsigned int* label_offset, unsigned int* target_node_offset)
+{
+    unsigned int num;
+    edge_offset = _dawg_decode_varint_unsigned(edge_offset, &num);
+    if (num == 0 && is_first_edge) {
+        return -1; // trying to decode past a final node without outgoing edges
+    }
+    bool last_edge = num & 1;
+    num >>= 1;
+    bool len_is_one = num & 1;
+    num >>= 1;
+    *target_node_offset = prev_target_node_offset + num;
+    if (len_is_one) {
+        *size = 1;
+    } else {
+        *size = packed_name_dawg[edge_offset++];
+    }
+    *label_offset = edge_offset;
+    return last_edge;
+}
+
+static int
+_lookup_dawg_packed(const char* name, unsigned int namelen)
+{
+    unsigned int stringpos = 0;
+    unsigned int node_offset = 0;
+    unsigned int result = 0; // this is the number of final nodes that we skipped to match name
+    while (stringpos < namelen) {
+        bool final;
+        unsigned int edge_offset = _dawg_decode_node(node_offset, &final);
+        unsigned int prev_target_node_offset = edge_offset;
+        bool is_first_edge = true;
+        for (;;) {
+            unsigned int size;
+            unsigned int label_offset, target_node_offset;
+            int last_edge = _dawg_decode_edge(
+                    is_first_edge, prev_target_node_offset, edge_offset,
+                    &size, &label_offset, &target_node_offset);
+            if (last_edge == -1) {
+                return -1;
+            }
+            is_first_edge = false;
+            prev_target_node_offset = target_node_offset;
+            int matched = _dawg_match_edge(name, namelen, size, label_offset, stringpos);
+            if (matched == -1) {
+                return -1;
+            }
+            if (matched) {
+                if (final)
+                    result += 1;
+                stringpos += size;
+                node_offset = target_node_offset;
+                break;
+            }
+            if (last_edge) {
+                return -1;
+            }
+            result += _dawg_node_descendant_count(target_node_offset);
+            edge_offset = label_offset + size;
+        }
+    }
+    if (_dawg_node_is_final(node_offset)) {
+        return result;
+    }
+    return -1;
+}
+
+static int
+_inverse_dawg_lookup(char* buffer, unsigned int buflen, unsigned int pos)
+{
+    unsigned int node_offset = 0;
+    unsigned int bufpos = 0;
+    for (;;) {
+        bool final;
+        unsigned int edge_offset = _dawg_decode_node(node_offset, &final);
+
+        if (final) {
+            if (pos == 0) {
+                if (bufpos + 1 == buflen) {
+                    return 0;
+                }
+                buffer[bufpos] = '\0';
+                return 1;
+            }
+            pos--;
+        }
+        unsigned int prev_target_node_offset = edge_offset;
+        bool is_first_edge = true;
+        for (;;) {
+            unsigned int size;
+            unsigned int label_offset, target_node_offset;
+            int last_edge = _dawg_decode_edge(
+                    is_first_edge, prev_target_node_offset, edge_offset,
+                    &size, &label_offset, &target_node_offset);
+            if (last_edge == -1) {
+                return 0;
+            }
+            is_first_edge = false;
+            prev_target_node_offset = target_node_offset;
+
+            unsigned int descendant_count = _dawg_node_descendant_count(target_node_offset);
+            if (pos < descendant_count) {
+                if (bufpos + size >= buflen) {
+                    return 0; // buffer overflow
+                }
+                for (unsigned int i = 0; i < size; i++) {
+                    buffer[bufpos++] = packed_name_dawg[label_offset++];
+                }
+                node_offset = target_node_offset;
+                break;
+            } else if (!last_edge) {
+                pos -= descendant_count;
+                edge_offset = label_offset + size;
+            } else {
+                return 0;
+            }
+        }
+    }
+}
+
+
 static int
 _getucname(PyObject *self,
            Py_UCS4 code, char* buffer, int buflen, int with_alias_and_seq)
@@ -1059,9 +1280,6 @@ _getucname(PyObject *self,
      * If with_alias_and_seq is 1, check for names in the Private Use Area 15
      * that we are using for aliases and named sequences. */
     int offset;
-    int i;
-    int word;
-    const unsigned char* w;
 
     if (code >= 0x110000)
         return 0;
@@ -1112,45 +1330,15 @@ _getucname(PyObject *self,
         return 1;
     }
 
-    /* get offset into phrasebook */
-    offset = phrasebook_offset1[(code>>phrasebook_shift)];
-    offset = phrasebook_offset2[(offset<<phrasebook_shift) +
-                               (code&((1<<phrasebook_shift)-1))];
-    if (!offset)
+    /* get position of codepoint in order of names in the dawg */
+    offset = dawg_codepoint_to_pos_index1[(code>>DAWG_CODEPOINT_TO_POS_SHIFT)];
+    offset = dawg_codepoint_to_pos_index2[(offset<<DAWG_CODEPOINT_TO_POS_SHIFT) +
+                               (code&((1<<DAWG_CODEPOINT_TO_POS_SHIFT)-1))];
+    if (offset == DAWG_CODEPOINT_TO_POS_NOTFOUND)
         return 0;
 
-    i = 0;
-
-    for (;;) {
-        /* get word index */
-        word = phrasebook[offset] - phrasebook_short;
-        if (word >= 0) {
-            word = (word << 8) + phrasebook[offset+1];
-            offset += 2;
-        } else
-            word = phrasebook[offset++];
-        if (i) {
-            if (i > buflen)
-                return 0; /* buffer overflow */
-            buffer[i++] = ' ';
-        }
-        /* copy word string from lexicon.  the last character in the
-           word has bit 7 set.  the last word in a string ends with
-           0x80 */
-        w = lexicon + lexicon_offset[word];
-        while (*w < 128) {
-            if (i >= buflen)
-                return 0; /* buffer overflow */
-            buffer[i++] = *w++;
-        }
-        if (i >= buflen)
-            return 0; /* buffer overflow */
-        buffer[i++] = *w & 127;
-        if (*w == 128)
-            break; /* end of word */
-    }
-
-    return 1;
+    assert(buflen >= 0);
+    return _inverse_dawg_lookup(buffer, Py_SAFE_DOWNCAST(buflen, int, unsigned int), offset);
 }
 
 static int
@@ -1162,21 +1350,6 @@ capi_getucname(Py_UCS4 code,
 
 }
 
-static int
-_cmpname(PyObject *self, int code, const char* name, int namelen)
-{
-    /* check if code corresponds to the given name */
-    int i;
-    char buffer[NAME_MAXLEN+1];
-    if (!_getucname(self, code, buffer, NAME_MAXLEN, 1))
-        return 0;
-    for (i = 0; i < namelen; i++) {
-        if (Py_TOUPPER(name[i]) != buffer[i])
-            return 0;
-    }
-    return buffer[namelen] == '\0';
-}
-
 static void
 find_syllable(const char *str, int *len, int *pos, int count, int column)
 {
@@ -1198,31 +1371,25 @@ find_syllable(const char *str, int *len, int *pos, int count, int column)
 }
 
 static int
-_check_alias_and_seq(unsigned int cp, Py_UCS4* code, int with_named_seq)
+_check_alias_and_seq(Py_UCS4* code, int with_named_seq)
 {
     /* check if named sequences are allowed */
-    if (!with_named_seq && IS_NAMED_SEQ(cp))
+    if (!with_named_seq && IS_NAMED_SEQ(*code))
         return 0;
     /* if the code point is in the PUA range that we use for aliases,
      * convert it to obtain the right code point */
-    if (IS_ALIAS(cp))
-        *code = name_aliases[cp-aliases_start];
-    else
-        *code = cp;
+    if (IS_ALIAS(*code))
+        *code = name_aliases[*code-aliases_start];
     return 1;
 }
 
+
 static int
-_getcode(PyObject* self,
-         const char* name, int namelen, Py_UCS4* code, int with_named_seq)
+_getcode(const char* name, int namelen, Py_UCS4* code)
 {
     /* Return the code point associated with the given name.
-     * Named aliases are resolved too (unless self != NULL (i.e. we are using
-     * 3.2.0)).  If with_named_seq is 1, returns the PUA code point that we are
-     * using for the named sequence, and the caller must then convert it. */
-    unsigned int h, v;
-    unsigned int mask = code_size-1;
-    unsigned int i, incr;
+     * Named aliases are not resolved, they are returned as a code point in the
+     * PUA */
 
     /* Check for hangul syllables. */
     if (strncmp(name, "HANGUL SYLLABLE ", 16) == 0) {
@@ -1245,6 +1412,7 @@ _getcode(PyObject* self,
     /* Check for unified ideographs. */
     if (strncmp(name, "CJK UNIFIED IDEOGRAPH-", 22) == 0) {
         /* Four or five hexdigits must follow. */
+        unsigned int v;
         v = 0;
         name += 22;
         namelen -= 22;
@@ -1266,41 +1434,24 @@ _getcode(PyObject* self,
         return 1;
     }
 
-    /* the following is the same as python's dictionary lookup, with
-       only minor changes.  see the makeunicodedata script for more
-       details */
-
-    h = (unsigned int) _gethash(name, namelen, code_magic);
-    i = (~h) & mask;
-    v = code_hash[i];
-    if (!v)
+    assert(namelen >= 0);
+    int position = _lookup_dawg_packed(name, Py_SAFE_DOWNCAST(namelen, int, unsigned int));
+    if (position < 0) {
         return 0;
-    if (_cmpname(self, v, name, namelen)) {
-        return _check_alias_and_seq(v, code, with_named_seq);
-    }
-    incr = (h ^ (h >> 3)) & mask;
-    if (!incr)
-        incr = mask;
-    for (;;) {
-        i = (i + incr) & mask;
-        v = code_hash[i];
-        if (!v)
-            return 0;
-        if (_cmpname(self, v, name, namelen)) {
-            return _check_alias_and_seq(v, code, with_named_seq);
-        }
-        incr = incr << 1;
-        if (incr > mask)
-            incr = incr ^ code_poly;
     }
+    *code = dawg_pos_to_codepoint[position];
+    return 1;
 }
 
+
 static int
 capi_getcode(const char* name, int namelen, Py_UCS4* code,
              int with_named_seq)
 {
-    return _getcode(NULL, name, namelen, code, with_named_seq);
-
+    if (!_getcode(name, namelen, code)) {
+        return 0;
+    }
+    return _check_alias_and_seq(code, with_named_seq);
 }
 
 static void
@@ -1393,10 +1544,17 @@ unicodedata_UCD_lookup_impl(PyObject *self, const char *name,
         return NULL;
     }
 
-    if (!_getcode(self, name, (int)name_length, &code, 1)) {
+    if (!_getcode(name, (int)name_length, &code)) {
         PyErr_Format(PyExc_KeyError, "undefined character name '%s'", name);
         return NULL;
     }
+    if (UCD_Check(self)) {
+        /* in 3.2.0 there are no aliases and named sequences */
+        if (IS_ALIAS(code) || IS_NAMED_SEQ(code)) {
+            PyErr_Format(PyExc_KeyError, "undefined character name '%s'", name);
+            return 0;
+        }
+    }
     /* check if code is in the PUA range that we use for named sequences
        and convert it */
     if (IS_NAMED_SEQ(code)) {
@@ -1405,6 +1563,9 @@ unicodedata_UCD_lookup_impl(PyObject *self, const char *name,
                                          named_sequences[index].seq,
                                          named_sequences[index].seqlen);
     }
+    if (IS_ALIAS(code)) {
+        code = name_aliases[code-aliases_start];
+    }
     return PyUnicode_FromOrdinal(code);
 }
 
@@ -1493,22 +1654,12 @@ unicodedata_exec(PyObject *module)
     v = new_previous_version(ucd_type, "3.2.0",
                              get_change_3_2_0, normalization_3_2_0);
     Py_DECREF(ucd_type);
-    if (v == NULL) {
-        return -1;
-    }
-    if (PyModule_AddObject(module, "ucd_3_2_0", v) < 0) {
-        Py_DECREF(v);
+    if (PyModule_Add(module, "ucd_3_2_0", v) < 0) {
         return -1;
     }
 
     /* Export C API */
-    PyObject *capsule = unicodedata_create_capi();
-    if (capsule == NULL) {
-        return -1;
-    }
-    int rc = PyModule_AddObjectRef(module, "_ucnhash_CAPI", capsule);
-    Py_DECREF(capsule);
-    if (rc < 0) {
+    if (PyModule_Add(module, "_ucnhash_CAPI", unicodedata_create_capi()) < 0) {
         return -1;
     }
     return 0;
diff --git a/Modules/unicodedata_db.h b/Modules/unicodedata_db.h
index 4c4b2f589c50bf..3e210863448b78 100644
--- a/Modules/unicodedata_db.h
+++ b/Modules/unicodedata_db.h
@@ -1,6 +1,6 @@
-/* this file was generated by Tools/unicode/makeunicodedata.py 3.3 */
+/* this file was generated by ./Tools/unicode/makeunicodedata.py 3.3 */
 
-#define UNIDATA_VERSION "15.0.0"
+#define UNIDATA_VERSION "15.1.0"
 /* a list of unique database records */
 const _PyUnicode_DatabaseRecord _PyUnicode_Database_Records[] = {
     {0, 0, 0, 0, 0, 0},
@@ -810,46 +810,46 @@ static const unsigned short index1[] = {
     101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
     101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
     101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
-    101, 101, 101, 271, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    121, 121, 121, 121, 273, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 274, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
+    101, 101, 101, 271, 101, 101, 101, 101, 272, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    121, 121, 121, 121, 274, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 275, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
     101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
-    101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 275, 101,
+    101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 276, 101,
     101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
     101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
-    101, 101, 101, 276, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272, 272,
-    272, 272, 272, 272, 272, 272, 272, 272, 272, 274, 137, 137, 137, 137,
+    101, 101, 101, 277, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 273, 273, 273, 273, 273, 273, 273, 273, 275, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
@@ -1215,7 +1215,7 @@ static const unsigned short index1[] = {
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
-    137, 137, 137, 137, 137, 137, 277, 137, 278, 279, 137, 137, 137, 137,
+    137, 137, 137, 137, 137, 137, 278, 137, 279, 280, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
     137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
@@ -1288,7 +1288,7 @@ static const unsigned short index1[] = {
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
-    120, 120, 120, 120, 120, 120, 120, 280, 120, 120, 120, 120, 120, 120,
+    120, 120, 120, 120, 120, 120, 120, 281, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
@@ -1325,7 +1325,7 @@ static const unsigned short index1[] = {
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
     120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120,
-    120, 280,
+    120, 281,
 };
 
 static const unsigned short index2[] = {
@@ -2016,58 +2016,57 @@ static const unsigned short index2[] = {
     251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251,
     251, 251, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
-    243, 0, 0, 0, 0, 252, 253, 253, 253, 243, 254, 172, 255, 256, 257, 256,
-    257, 256, 257, 256, 257, 256, 257, 243, 243, 256, 257, 256, 257, 256,
-    257, 256, 257, 258, 259, 260, 260, 243, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 261, 262, 263, 264, 265, 265, 258, 254, 254, 254, 254,
-    254, 251, 243, 266, 266, 266, 254, 172, 253, 243, 26, 0, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 267, 172, 267, 172, 267, 172,
+    243, 243, 243, 243, 243, 252, 253, 253, 253, 243, 254, 172, 255, 256,
+    257, 256, 257, 256, 257, 256, 257, 256, 257, 243, 243, 256, 257, 256,
+    257, 256, 257, 256, 257, 258, 259, 260, 260, 243, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 261, 262, 263, 264, 265, 265, 258, 254, 254,
+    254, 254, 254, 251, 243, 266, 266, 266, 254, 172, 253, 243, 26, 0, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 267, 172, 267, 172,
     267, 172, 267, 172, 267, 172, 267, 172, 267, 172, 267, 172, 267, 172,
-    267, 172, 267, 172, 172, 267, 172, 267, 172, 267, 172, 172, 172, 172,
-    172, 172, 267, 267, 172, 267, 267, 172, 267, 267, 172, 267, 267, 172,
-    267, 267, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 267, 172, 172, 0, 0,
-    268, 268, 269, 269, 254, 270, 271, 258, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 267, 172, 267, 172, 267, 172, 267, 172, 267,
+    267, 172, 267, 172, 267, 172, 172, 267, 172, 267, 172, 267, 172, 172,
+    172, 172, 172, 172, 267, 267, 172, 267, 267, 172, 267, 267, 172, 267,
+    267, 172, 267, 267, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 267, 172,
+    172, 0, 0, 268, 268, 269, 269, 254, 270, 271, 258, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 267, 172, 267, 172, 267, 172, 267,
     172, 267, 172, 267, 172, 267, 172, 267, 172, 267, 172, 267, 172, 267,
-    172, 172, 267, 172, 267, 172, 267, 172, 172, 172, 172, 172, 172, 267,
-    267, 172, 267, 267, 172, 267, 267, 172, 267, 267, 172, 267, 267, 172,
+    172, 267, 172, 172, 267, 172, 267, 172, 267, 172, 172, 172, 172, 172,
+    172, 267, 267, 172, 267, 267, 172, 267, 267, 172, 267, 267, 172, 267,
+    267, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 267, 172, 172, 267, 267,
+    267, 267, 253, 254, 254, 270, 271, 0, 0, 0, 0, 0, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 267, 172, 172, 267, 267, 267, 267,
-    253, 254, 254, 270, 271, 0, 0, 0, 0, 0, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 172, 0, 271, 271, 271, 271, 271,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 0, 271, 271, 271,
     271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271,
     271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271,
     271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271,
     271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271,
     271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271,
     271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271, 271,
-    271, 271, 271, 271, 271, 0, 272, 272, 273, 273, 273, 273, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 172, 172, 172, 172, 172, 172, 172,
+    271, 271, 271, 271, 271, 271, 271, 0, 272, 272, 273, 273, 273, 273, 274,
+    274, 274, 274, 274, 274, 274, 274, 274, 274, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 243, 243, 243,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 243,
     243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
     243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
-    243, 243, 243, 243, 243, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 172, 172,
+    243, 243, 243, 243, 243, 243, 243, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 243,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
+    274, 274, 274, 251, 251, 0, 273, 273, 273, 273, 273, 273, 273, 273, 273,
+    273, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 251, 251, 0, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 274,
-    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 275, 275, 275, 275, 275, 275, 275, 275, 251, 276, 276, 276, 276,
-    276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 251, 251, 251,
-    272, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 274, 274, 274,
+    274, 274, 274, 275, 275, 275, 275, 275, 275, 275, 275, 251, 276, 276,
+    276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
+    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 251,
+    251, 251, 272, 273, 273, 273, 273, 273, 273, 273, 273, 273, 273, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 274, 276, 276, 276, 276, 276, 276,
-    276, 276, 276, 276, 276, 276, 276, 276, 276, 274, 274, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 251, 251, 251, 251, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
+    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 276, 276, 276, 276,
+    276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 276, 274, 274, 274,
+    274, 274, 274, 274, 274, 274, 274, 274, 274, 251, 251, 251, 251, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
@@ -2078,17 +2077,18 @@ static const unsigned short index2[] = {
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 251, 251, 251, 251,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
+    274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 251, 251,
+    251, 251, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 251, 251, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
+    274, 274, 274, 251, 251, 274, 274, 274, 274, 274, 274, 274, 274, 274,
     274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274, 274,
-    274, 274, 274, 274, 274, 274, 251, 172, 172, 172, 172, 172, 172, 172,
+    274, 274, 274, 274, 274, 274, 274, 274, 251, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
@@ -2102,12 +2102,12 @@ static const unsigned short index2[] = {
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+    172, 172, 172, 172, 172, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 172, 172, 172,
+    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 254, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 254, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
@@ -2115,12 +2115,12 @@ static const unsigned short index2[] = {
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 0, 0, 0, 243,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 0, 0, 0,
     243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
     243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
     243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243,
-    243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
+    243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
     48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
     48, 48, 48, 48, 48, 48, 48, 48, 53, 53, 53, 53, 53, 53, 83, 83, 48, 48,
     48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 53, 138, 138, 138, 48, 48, 48,
@@ -3339,6 +3339,15 @@ static const unsigned short index2[] = {
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 281, 281,
+    281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
@@ -3350,9 +3359,9 @@ static const unsigned short index2[] = {
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
-    281, 281, 281, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280,
+    281, 281, 281, 281, 281, 280, 280, 280, 280, 280, 280, 280, 280, 280,
     280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280,
-    280, 280, 280, 280, 280, 281, 281, 281, 281, 281, 281, 281, 281, 281,
+    280, 280, 280, 280, 280, 280, 280, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
@@ -3368,33 +3377,33 @@ static const unsigned short index2[] = {
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
-    281, 281, 281, 281, 281, 0, 0, 172, 172, 172, 172, 172, 172, 172, 172,
+    281, 281, 281, 281, 281, 281, 281, 0, 0, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
-    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 281, 281, 281,
-    281, 281, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 281,
+    281, 281, 281, 281, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
     172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172, 172,
+    172, 172, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
     281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
-    281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
-    281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 0, 177, 0, 0, 0, 0, 0,
+    281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 0, 177, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
+    0, 0, 0, 0, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
     177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
     177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
     177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
     177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
     177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177,
-    177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 71, 71, 71,
+    177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 71,
     71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71,
     71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71,
     71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71,
@@ -3408,7 +3417,7 @@ static const unsigned short index2[] = {
     71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71,
     71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71,
     71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71,
-    71, 71, 71, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 279, 279,
+    71, 71, 71, 71, 71, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 279,
     279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279,
     279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279,
     279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279,
@@ -3417,7 +3426,7 @@ static const unsigned short index2[] = {
     279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279,
     279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279,
     279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279,
-    279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 0, 0,
+    279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 0, 0,
 };
 
 /* decomposition data */
@@ -6027,385 +6036,199 @@ static const change_record change_records_3_2_0[] = {
     { 9, 255, 255, 255, 255, 0 },
     { 255, 255, 255, 1, 255, 0 },
     { 255, 20, 255, 255, 255, 0 },
-    { 255, 255, 255, 255, 255, 1e+16 },
+    { 255, 255, 255, 255, 255, 1000000000000.0 },
     { 255, 255, 255, 255, 255, 1e+20 },
     { 255, 19, 255, 255, 255, -1 },
     { 1, 255, 255, 0, 255, 0 },
 };
 static const unsigned char changes_3_2_0_index[] = {
-    0, 1, 2, 2, 3, 4, 5, 6, 2, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
-    19, 20, 21, 22, 23, 24, 25, 2, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
-    36, 37, 2, 2, 2, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
-    52, 52, 2, 53, 2, 2, 54, 55, 56, 57, 58, 2, 59, 60, 61, 62, 2, 63, 64,
-    65, 66, 67, 68, 68, 2, 69, 2, 2, 70, 71, 52, 72, 73, 74, 75, 2, 2, 2, 76,
-    77, 78, 79, 80, 81, 82, 83, 84, 85, 2, 2, 2, 2, 2, 2, 86, 2, 2, 2, 2, 2,
-    87, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 88, 2, 89, 2, 2, 2, 2, 2, 2, 2, 2,
-    90, 91, 2, 2, 2, 2, 2, 2, 2, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 93,
-    94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 95, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 96, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 97, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 98, 99, 2, 2, 2, 2, 2, 2, 2, 2, 100, 52,
-    52, 101, 102, 52, 103, 104, 105, 106, 107, 108, 109, 110, 111, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 112, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 113, 114, 115, 116, 117, 118, 2, 2, 119, 120, 121,
-    2, 122, 123, 124, 125, 126, 127, 2, 128, 129, 130, 131, 132, 133, 134,
-    52, 52, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147,
-    2, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 2, 159, 160, 2,
-    161, 162, 163, 164, 2, 165, 166, 167, 168, 169, 170, 171, 2, 172, 173,
-    174, 175, 2, 176, 177, 178, 52, 52, 52, 52, 52, 52, 52, 179, 180, 52,
-    181, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 182, 52,
-    52, 52, 52, 52, 52, 52, 52, 183, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 52, 52, 52, 52,
-    184, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 52, 52, 52,
-    52, 185, 186, 187, 188, 2, 2, 2, 2, 189, 190, 191, 192, 52, 52, 52, 52,
-    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
-    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
-    52, 52, 52, 52, 52, 52, 52, 102, 52, 52, 52, 52, 52, 52, 52, 52, 52, 183,
-    193, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 194, 52,
-    52, 195, 52, 52, 196, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 197, 198, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 199, 181, 2, 2, 200, 201,
-    202, 203, 204, 2, 2, 205, 2, 2, 2, 206, 207, 208, 52, 52, 52, 52, 52,
-    209, 2, 2, 2, 2, 2, 2, 2, 2, 210, 2, 211, 212, 213, 2, 2, 214, 2, 2, 2,
-    215, 2, 2, 2, 2, 2, 216, 52, 217, 218, 2, 2, 2, 2, 2, 219, 220, 221, 2,
-    222, 223, 2, 2, 224, 225, 52, 226, 227, 2, 52, 52, 52, 52, 52, 52, 52,
-    228, 229, 230, 231, 232, 52, 52, 233, 234, 52, 235, 2, 2, 2, 2, 2, 2, 2,
-    2, 236, 237, 97, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 86, 238, 2,
-    239, 240, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 241, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 242, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 243, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 244, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 245, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
-    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 246,
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+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1,
 };
 
 static const unsigned char changes_3_2_0_data[] = {
@@ -6426,153 +6249,169 @@ static const unsigned char changes_3_2_0_data[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 10, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10,
-    0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 10, 0, 9, 9, 0, 0, 0, 9, 9,
-    9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 10, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 10, 10, 10, 10, 10, 10,
+    10, 10, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
+    10, 0, 9, 9, 0, 0, 0, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 0, 9, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 13, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 9, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
+    0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 0, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0, 0, 0,
-    0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 16, 17, 18, 19, 0, 0, 9,
-    9, 9, 9, 0, 0, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 15, 16, 17, 18, 19, 0, 0, 9, 9, 9, 9, 0, 0, 9, 0,
+    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0,
+    0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 9, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
-    9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 9, 9, 0, 0, 9, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
+    0, 0, 9, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 20, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 9, 9,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 9, 9, 9, 0, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 0, 20, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0,
+    0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 9, 9, 0, 0, 0, 0, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9,
+    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 9, 0, 0, 9, 0, 0, 9, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 0, 0, 0,
-    0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
-    9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 9, 0, 0, 9, 0, 0, 9, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 0, 0,
+    0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 21, 21, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 0, 0, 22, 22, 22, 22, 22, 22, 22, 22,
+    0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 0, 0, 22, 22, 22, 22, 22, 22, 22, 22,
     22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
     22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 0, 9,
     9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -6618,82 +6457,98 @@ static const unsigned char changes_3_2_0_data[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
-    9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0,
-    0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 33, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 34, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 33, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34, 34,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 0, 0, 0, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
-    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
     0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
     9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -6726,74 +6581,97 @@ static const unsigned char changes_3_2_0_data[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 47, 47, 47, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    48, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 50, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 47, 47, 47, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 48, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 50, 11, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 51, 51, 51, 51, 51, 51, 51,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 51,
     51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
-    51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 0, 0, 0, 0,
+    51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
+    51, 51, 51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 51, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 48, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    9, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 48, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 9, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 0, 0, 0, 0, 9, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 0, 0,
+    0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 9, 0,
+    0, 0, 0, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 9, 0, 9, 0, 0, 0, 0, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 0, 0, 9,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 37, 37, 37, 37, 37, 37,
+    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
     37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
     37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
     37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
     37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
     37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
     37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
-    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 0, 0, 0, 0, 0, 0,
+    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 52, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 52, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
@@ -6802,26 +6680,31 @@ static const unsigned char changes_3_2_0_data[] = {
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 9,
-    0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
-    9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9,
-    9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9,
-    9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 0, 9, 0, 0, 0, 0, 0, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
+    0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9,
+    9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9,
+    9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    32, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -6829,526 +6712,984 @@ static const unsigned char changes_3_2_0_data[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 53, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9,
-    9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    53, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 0, 9, 9, 9, 9, 0, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9,
-    9, 9, 0, 0, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0, 9, 9, 9, 9, 9, 0,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 0, 0, 9, 9, 9, 0, 0, 9, 0, 0,
-    0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9,
-    9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 0,
-    0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0, 0,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 0, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 0, 9, 0, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 0, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0,
-    9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -7356,94 +7697,66 @@ static const unsigned char changes_3_2_0_data[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    57, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57, 0, 0, 0,
+    0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9,
+    9, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 9, 9, 9, 9,
+    9, 9, 9, 0, 9, 9, 0, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
-    9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -7453,317 +7766,346 @@ static const unsigned char changes_3_2_0_data[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
-    0, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9,
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     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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     9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
-    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0,
 };
 
 static const change_record* get_change_3_2_0(Py_UCS4 n)
@@ -7771,8 +8113,8 @@ static const change_record* get_change_3_2_0(Py_UCS4 n)
     int index;
     if (n >= 0x110000) index = 0;
     else {
-        index = changes_3_2_0_index[n>>7];
-        index = changes_3_2_0_data[(index<<7)+(n & 127)];
+        index = changes_3_2_0_index[n>>8];
+        index = changes_3_2_0_data[(index<<8)+(n & 255)];
     }
     return change_records_3_2_0+index;
 }
diff --git a/Modules/unicodename_db.h b/Modules/unicodename_db.h
index f6320c43e53f77..4fe60ad5ed4452 100644
--- a/Modules/unicodename_db.h
+++ b/Modules/unicodename_db.h
@@ -1,30124 +1,17171 @@
-/* this file was generated by Tools/unicode/makeunicodedata.py 3.3 */
+/* this file was generated by ./Tools/unicode/makeunicodedata.py 3.3 */
 
 #define NAME_MAXLEN 256
 
-/* lexicon */
-static const unsigned char lexicon[] = {
-    76, 69, 84, 84, 69, 210, 83, 77, 65, 76, 204, 83, 73, 71, 206, 87, 73,
-    84, 200, 83, 89, 76, 76, 65, 66, 76, 197, 67, 65, 80, 73, 84, 65, 204,
-    72, 73, 69, 82, 79, 71, 76, 89, 80, 200, 76, 65, 84, 73, 206, 65, 82, 65,
-    66, 73, 195, 67, 85, 78, 69, 73, 70, 79, 82, 205, 89, 201, 67, 74, 203,
-    77, 65, 84, 72, 69, 77, 65, 84, 73, 67, 65, 204, 69, 71, 89, 80, 84, 73,
-    65, 206, 67, 79, 77, 80, 65, 84, 73, 66, 73, 76, 73, 84, 217, 83, 89, 77,
-    66, 79, 204, 68, 73, 71, 73, 212, 86, 79, 87, 69, 204, 84, 65, 78, 71,
-    85, 212, 70, 79, 82, 77, 128, 67, 65, 78, 65, 68, 73, 65, 206, 83, 89,
-    76, 76, 65, 66, 73, 67, 211, 65, 78, 196, 83, 73, 71, 78, 87, 82, 73, 84,
-    73, 78, 199, 84, 73, 77, 69, 211, 66, 65, 77, 85, 205, 83, 67, 82, 73,
-    80, 212, 66, 79, 76, 196, 65, 78, 65, 84, 79, 76, 73, 65, 206, 72, 65,
-    78, 71, 85, 204, 78, 85, 77, 66, 69, 210, 76, 73, 78, 69, 65, 210, 67,
-    79, 77, 66, 73, 78, 73, 78, 199, 76, 73, 71, 65, 84, 85, 82, 197, 71, 82,
-    69, 69, 203, 69, 84, 72, 73, 79, 80, 73, 195, 77, 85, 83, 73, 67, 65,
-    204, 67, 89, 82, 73, 76, 76, 73, 195, 70, 79, 210, 75, 72, 73, 84, 65,
-    206, 193, 73, 84, 65, 76, 73, 195, 84, 65, 77, 73, 204, 76, 69, 70, 212,
-    78, 85, 83, 72, 213, 67, 73, 82, 67, 76, 69, 196, 82, 65, 68, 73, 67, 65,
-    204, 83, 65, 78, 83, 45, 83, 69, 82, 73, 198, 82, 73, 71, 72, 212, 83,
-    81, 85, 65, 82, 197, 77, 79, 68, 73, 70, 73, 69, 210, 70, 73, 78, 65,
-    204, 84, 65, 201, 68, 79, 85, 66, 76, 197, 83, 73, 71, 78, 128, 65, 82,
-    82, 79, 87, 128, 65, 66, 79, 86, 69, 128, 86, 65, 201, 66, 69, 76, 79,
-    87, 128, 72, 69, 78, 84, 65, 73, 71, 65, 78, 193, 66, 76, 65, 67, 203,
-    87, 72, 73, 84, 197, 65, 82, 82, 79, 215, 65, 128, 85, 128, 86, 65, 82,
-    73, 65, 84, 73, 79, 206, 73, 128, 66, 82, 65, 73, 76, 76, 197, 80, 65,
-    84, 84, 69, 82, 206, 75, 65, 84, 65, 75, 65, 78, 193, 66, 89, 90, 65, 78,
-    84, 73, 78, 197, 79, 128, 68, 79, 212, 73, 83, 79, 76, 65, 84, 69, 196,
-    77, 65, 82, 75, 128, 194, 79, 198, 77, 89, 65, 78, 77, 65, 210, 86, 69,
-    82, 84, 73, 67, 65, 204, 77, 73, 68, 68, 76, 197, 75, 65, 78, 71, 88,
-    201, 75, 73, 75, 65, 75, 85, 201, 77, 69, 78, 68, 197, 84, 73, 66, 69,
-    84, 65, 206, 77, 65, 82, 203, 72, 69, 65, 86, 217, 73, 78, 73, 84, 73,
-    65, 204, 72, 77, 79, 78, 199, 79, 78, 197, 77, 69, 69, 205, 65, 66, 79,
-    86, 197, 67, 79, 80, 84, 73, 195, 75, 72, 77, 69, 210, 82, 73, 71, 72,
-    84, 87, 65, 82, 68, 211, 90, 78, 65, 77, 69, 78, 78, 217, 67, 65, 82, 82,
-    73, 69, 210, 89, 69, 200, 68, 69, 86, 65, 78, 65, 71, 65, 82, 201, 71,
-    69, 79, 82, 71, 73, 65, 206, 72, 79, 79, 75, 128, 67, 72, 69, 82, 79, 75,
-    69, 197, 77, 79, 78, 71, 79, 76, 73, 65, 206, 84, 87, 207, 83, 84, 82,
-    79, 75, 69, 128, 79, 78, 69, 128, 80, 76, 85, 211, 84, 87, 79, 128, 76,
-    79, 87, 69, 210, 66, 79, 216, 83, 81, 85, 65, 82, 69, 196, 83, 89, 77,
-    66, 79, 76, 128, 80, 72, 65, 83, 69, 45, 197, 84, 72, 82, 69, 197, 85,
-    80, 80, 69, 210, 86, 79, 67, 65, 76, 73, 195, 76, 69, 70, 84, 87, 65, 82,
-    68, 211, 84, 207, 67, 79, 78, 83, 79, 78, 65, 78, 212, 77, 73, 65, 207,
-    68, 82, 65, 87, 73, 78, 71, 211, 84, 73, 76, 197, 68, 85, 80, 76, 79, 89,
-    65, 206, 74, 79, 78, 71, 83, 69, 79, 78, 199, 80, 65, 82, 69, 78, 84, 72,
-    69, 83, 73, 90, 69, 196, 84, 72, 65, 205, 71, 79, 78, 68, 201, 76, 79,
-    215, 65, 76, 69, 198, 72, 65, 76, 198, 85, 208, 70, 79, 85, 82, 128, 71,
-    76, 65, 71, 79, 76, 73, 84, 73, 195, 72, 69, 66, 82, 69, 215, 72, 73, 71,
-    200, 84, 72, 82, 69, 69, 128, 79, 86, 69, 210, 72, 65, 128, 73, 78, 68,
-    69, 216, 77, 65, 76, 65, 89, 65, 76, 65, 205, 83, 73, 89, 65, 209, 68,
-    79, 87, 206, 80, 65, 72, 65, 87, 200, 67, 72, 79, 83, 69, 79, 78, 199,
-    66, 65, 76, 73, 78, 69, 83, 197, 70, 73, 86, 69, 128, 72, 65, 76, 70, 87,
-    73, 68, 84, 200, 72, 65, 78, 68, 45, 70, 73, 83, 212, 77, 69, 82, 79, 73,
-    84, 73, 195, 84, 85, 82, 78, 69, 196, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    73, 195, 75, 65, 128, 76, 73, 71, 72, 212, 73, 68, 69, 79, 71, 82, 65,
-    205, 80, 72, 65, 83, 69, 45, 196, 84, 79, 128, 65, 76, 67, 72, 69, 77,
-    73, 67, 65, 204, 78, 69, 85, 77, 197, 66, 82, 65, 72, 77, 201, 84, 79,
-    78, 197, 66, 65, 82, 128, 82, 65, 128, 83, 73, 78, 72, 65, 76, 193, 78,
-    85, 77, 69, 82, 73, 195, 80, 65, 128, 83, 73, 88, 128, 89, 65, 128, 69,
-    73, 71, 72, 84, 128, 76, 65, 128, 77, 65, 128, 83, 69, 86, 69, 78, 128,
-    84, 72, 85, 77, 194, 72, 85, 78, 71, 65, 82, 73, 65, 206, 78, 73, 78, 69,
-    128, 76, 79, 78, 199, 78, 65, 128, 66, 65, 82, 194, 72, 65, 200, 82, 73,
-    71, 72, 84, 128, 66, 76, 79, 67, 203, 68, 79, 84, 211, 78, 79, 82, 84,
-    200, 83, 65, 128, 84, 72, 79, 85, 83, 65, 78, 68, 128, 84, 65, 128, 90,
-    90, 89, 88, 128, 90, 90, 89, 84, 128, 90, 90, 89, 82, 88, 128, 90, 90,
-    89, 82, 128, 90, 90, 89, 80, 128, 90, 90, 89, 65, 128, 90, 90, 89, 128,
-    90, 90, 85, 88, 128, 90, 90, 85, 82, 88, 128, 90, 90, 85, 82, 128, 90,
-    90, 85, 80, 128, 90, 90, 85, 128, 90, 90, 83, 89, 65, 128, 90, 90, 83,
-    65, 128, 90, 90, 79, 88, 128, 90, 90, 79, 80, 128, 90, 90, 79, 128, 90,
-    90, 73, 88, 128, 90, 90, 73, 84, 128, 90, 90, 73, 80, 128, 90, 90, 73,
-    69, 88, 128, 90, 90, 73, 69, 84, 128, 90, 90, 73, 69, 80, 128, 90, 90,
-    73, 69, 128, 90, 90, 73, 128, 90, 90, 69, 88, 128, 90, 90, 69, 80, 128,
-    90, 90, 69, 69, 128, 90, 90, 69, 128, 90, 90, 65, 88, 128, 90, 90, 65,
-    84, 128, 90, 90, 65, 80, 128, 90, 90, 65, 65, 128, 90, 90, 65, 128, 90,
-    89, 71, 79, 83, 128, 90, 87, 83, 80, 128, 90, 87, 78, 74, 128, 90, 87,
-    78, 66, 83, 80, 128, 90, 87, 74, 128, 90, 87, 202, 90, 87, 65, 82, 65,
-    75, 65, 89, 128, 90, 87, 65, 128, 90, 85, 84, 128, 90, 85, 79, 88, 128,
-    90, 85, 79, 80, 128, 90, 85, 79, 128, 90, 85, 77, 128, 90, 85, 66, 85,
-    82, 128, 90, 85, 53, 128, 90, 85, 181, 90, 213, 90, 83, 72, 65, 128, 90,
-    82, 65, 128, 90, 81, 65, 80, 72, 193, 90, 79, 84, 128, 90, 79, 79, 128,
-    90, 79, 77, 66, 73, 69, 128, 90, 79, 65, 128, 90, 77, 69, 89, 84, 83, 65,
-    128, 90, 76, 65, 77, 193, 90, 76, 65, 128, 90, 76, 193, 90, 74, 69, 128,
-    90, 73, 90, 50, 128, 90, 73, 81, 65, 65, 128, 90, 73, 80, 80, 69, 82, 45,
-    77, 79, 85, 84, 200, 90, 73, 78, 79, 82, 128, 90, 73, 76, 68, 69, 128,
-    90, 73, 71, 90, 65, 199, 90, 73, 71, 128, 90, 73, 68, 193, 90, 73, 66,
-    128, 90, 73, 194, 90, 73, 51, 128, 90, 201, 90, 72, 89, 88, 128, 90, 72,
-    89, 84, 128, 90, 72, 89, 82, 88, 128, 90, 72, 89, 82, 128, 90, 72, 89,
-    80, 128, 90, 72, 89, 128, 90, 72, 87, 69, 128, 90, 72, 87, 65, 128, 90,
-    72, 85, 88, 128, 90, 72, 85, 84, 128, 90, 72, 85, 82, 88, 128, 90, 72,
-    85, 82, 128, 90, 72, 85, 80, 128, 90, 72, 85, 79, 88, 128, 90, 72, 85,
-    79, 80, 128, 90, 72, 85, 79, 128, 90, 72, 85, 128, 90, 72, 79, 88, 128,
-    90, 72, 79, 84, 128, 90, 72, 79, 80, 128, 90, 72, 79, 79, 128, 90, 72,
-    79, 73, 128, 90, 72, 79, 128, 90, 72, 73, 86, 69, 84, 69, 128, 90, 72,
-    73, 76, 128, 90, 72, 73, 128, 90, 72, 69, 88, 128, 90, 72, 69, 84, 128,
-    90, 72, 69, 80, 128, 90, 72, 69, 69, 128, 90, 72, 69, 128, 90, 72, 197,
-    90, 72, 65, 89, 73, 78, 128, 90, 72, 65, 88, 128, 90, 72, 65, 84, 128,
-    90, 72, 65, 82, 128, 90, 72, 65, 80, 128, 90, 72, 65, 73, 78, 128, 90,
-    72, 65, 65, 128, 90, 72, 65, 128, 90, 72, 128, 90, 69, 86, 79, 75, 128,
-    90, 69, 85, 83, 128, 90, 69, 84, 65, 128, 90, 69, 82, 79, 128, 90, 69,
-    82, 207, 90, 69, 78, 128, 90, 69, 77, 76, 89, 65, 128, 90, 69, 77, 76,
-    74, 65, 128, 90, 69, 76, 79, 128, 90, 69, 66, 82, 193, 90, 69, 50, 128,
-    90, 197, 90, 65, 89, 78, 128, 90, 65, 89, 73, 78, 45, 89, 79, 68, 72,
-    128, 90, 65, 89, 73, 78, 128, 90, 65, 89, 73, 206, 90, 65, 86, 73, 89,
-    65, 78, 73, 128, 90, 65, 84, 65, 128, 90, 65, 82, 81, 65, 128, 90, 65,
-    82, 76, 128, 90, 65, 81, 69, 198, 90, 65, 80, 89, 65, 84, 89, 77, 73,
-    128, 90, 65, 80, 89, 65, 84, 79, 89, 128, 90, 65, 80, 89, 65, 84, 79,
-    217, 90, 65, 80, 89, 65, 84, 65, 89, 65, 128, 90, 65, 78, 79, 90, 72, 69,
-    75, 128, 90, 65, 78, 65, 66, 65, 90, 65, 210, 90, 65, 77, 88, 128, 90,
-    65, 76, 128, 90, 65, 204, 90, 65, 75, 82, 89, 84, 79, 69, 128, 90, 65,
-    75, 82, 89, 84, 65, 89, 65, 128, 90, 65, 75, 82, 89, 84, 65, 89, 193, 90,
-    65, 73, 78, 128, 90, 65, 73, 206, 90, 65, 73, 128, 90, 65, 72, 128, 90,
-    65, 200, 90, 65, 71, 128, 90, 65, 69, 70, 128, 90, 65, 68, 69, 82, 90,
-    72, 75, 65, 128, 90, 65, 55, 128, 90, 193, 90, 48, 49, 54, 72, 128, 90,
-    48, 49, 54, 71, 128, 90, 48, 49, 54, 70, 128, 90, 48, 49, 54, 69, 128,
-    90, 48, 49, 54, 68, 128, 90, 48, 49, 54, 67, 128, 90, 48, 49, 54, 66,
-    128, 90, 48, 49, 54, 65, 128, 90, 48, 49, 54, 128, 90, 48, 49, 53, 73,
-    128, 90, 48, 49, 53, 72, 128, 90, 48, 49, 53, 71, 128, 90, 48, 49, 53,
-    70, 128, 90, 48, 49, 53, 69, 128, 90, 48, 49, 53, 68, 128, 90, 48, 49,
-    53, 67, 128, 90, 48, 49, 53, 66, 128, 90, 48, 49, 53, 65, 128, 90, 48,
-    49, 53, 128, 90, 48, 49, 52, 128, 90, 48, 49, 51, 128, 90, 48, 49, 50,
-    128, 90, 48, 49, 49, 128, 90, 48, 49, 48, 128, 90, 48, 48, 57, 128, 90,
-    48, 48, 56, 128, 90, 48, 48, 55, 128, 90, 48, 48, 54, 128, 90, 48, 48,
-    53, 65, 128, 90, 48, 48, 53, 128, 90, 48, 48, 52, 65, 128, 90, 48, 48,
-    52, 128, 90, 48, 48, 51, 66, 128, 90, 48, 48, 51, 65, 128, 90, 48, 48,
-    51, 128, 90, 48, 48, 50, 68, 128, 90, 48, 48, 50, 67, 128, 90, 48, 48,
-    50, 66, 128, 90, 48, 48, 50, 65, 128, 90, 48, 48, 50, 128, 90, 48, 48,
-    49, 128, 90, 128, 218, 89, 89, 88, 128, 89, 89, 84, 128, 89, 89, 82, 88,
-    128, 89, 89, 82, 128, 89, 89, 80, 128, 89, 89, 69, 128, 89, 89, 65, 65,
-    128, 89, 89, 65, 128, 89, 89, 128, 89, 87, 79, 79, 128, 89, 87, 79, 128,
-    89, 87, 73, 73, 128, 89, 87, 73, 128, 89, 87, 69, 128, 89, 87, 65, 65,
-    128, 89, 87, 65, 128, 89, 86, 128, 89, 85, 88, 128, 89, 85, 87, 79, 81,
-    128, 89, 85, 85, 75, 65, 76, 69, 65, 80, 73, 78, 84, 85, 128, 89, 85, 85,
-    128, 89, 85, 84, 128, 89, 85, 83, 128, 89, 85, 211, 89, 85, 82, 88, 128,
-    89, 85, 82, 128, 89, 85, 81, 128, 89, 85, 209, 89, 85, 80, 128, 89, 85,
-    79, 88, 128, 89, 85, 79, 84, 128, 89, 85, 79, 80, 128, 89, 85, 79, 77,
-    128, 89, 85, 79, 128, 89, 85, 78, 128, 89, 85, 77, 128, 89, 85, 74, 128,
-    89, 85, 73, 128, 89, 85, 69, 81, 128, 89, 85, 69, 128, 89, 85, 68, 72,
-    128, 89, 85, 68, 200, 89, 85, 65, 78, 128, 89, 85, 65, 69, 78, 128, 89,
-    85, 45, 89, 69, 79, 128, 89, 85, 45, 89, 69, 128, 89, 85, 45, 85, 128,
-    89, 85, 45, 79, 128, 89, 85, 45, 73, 128, 89, 85, 45, 69, 79, 128, 89,
-    85, 45, 69, 128, 89, 85, 45, 65, 69, 128, 89, 85, 45, 65, 128, 89, 85,
-    45, 52, 128, 89, 85, 45, 51, 128, 89, 85, 45, 50, 128, 89, 85, 45, 49,
-    128, 89, 85, 128, 89, 213, 89, 82, 89, 128, 89, 80, 83, 73, 76, 73, 128,
-    89, 80, 79, 82, 82, 79, 73, 128, 89, 80, 79, 75, 82, 73, 83, 73, 83, 128,
-    89, 80, 79, 75, 82, 73, 83, 73, 211, 89, 80, 79, 71, 69, 71, 82, 65, 77,
-    77, 69, 78, 73, 128, 89, 79, 89, 128, 89, 79, 88, 128, 89, 79, 87, 68,
-    128, 89, 79, 85, 84, 72, 70, 85, 76, 78, 69, 83, 83, 128, 89, 79, 85, 84,
-    72, 70, 85, 204, 89, 79, 213, 89, 79, 84, 128, 89, 79, 212, 89, 79, 82,
-    73, 128, 89, 79, 81, 128, 89, 79, 209, 89, 79, 80, 128, 89, 79, 79, 128,
-    89, 79, 77, 79, 128, 89, 79, 71, 72, 128, 89, 79, 68, 128, 89, 79, 196,
-    89, 79, 65, 128, 89, 79, 45, 89, 79, 128, 89, 79, 45, 89, 69, 79, 128,
-    89, 79, 45, 89, 65, 69, 128, 89, 79, 45, 89, 65, 128, 89, 79, 45, 79,
-    128, 89, 79, 45, 73, 128, 89, 79, 45, 69, 79, 128, 89, 79, 45, 65, 69,
-    128, 89, 79, 45, 65, 128, 89, 79, 45, 54, 128, 89, 79, 45, 53, 128, 89,
-    79, 45, 52, 128, 89, 79, 45, 51, 128, 89, 79, 45, 50, 128, 89, 79, 45,
-    49, 128, 89, 207, 89, 73, 90, 69, 84, 128, 89, 73, 88, 128, 89, 73, 87,
-    78, 128, 89, 73, 84, 128, 89, 73, 80, 128, 89, 73, 78, 71, 128, 89, 73,
-    73, 128, 89, 73, 72, 128, 89, 73, 199, 89, 73, 69, 88, 128, 89, 73, 69,
-    84, 128, 89, 73, 69, 80, 128, 89, 73, 69, 69, 128, 89, 73, 69, 128, 89,
-    73, 68, 68, 73, 83, 200, 89, 73, 45, 85, 128, 89, 73, 128, 89, 72, 69,
-    128, 89, 72, 65, 128, 89, 70, 69, 83, 73, 83, 128, 89, 70, 69, 83, 73,
-    211, 89, 70, 69, 206, 89, 69, 90, 73, 68, 201, 89, 69, 89, 128, 89, 69,
-    87, 128, 89, 69, 85, 88, 128, 89, 69, 85, 82, 65, 69, 128, 89, 69, 85,
-    81, 128, 89, 69, 85, 77, 128, 89, 69, 85, 65, 69, 84, 128, 89, 69, 85,
-    65, 69, 128, 89, 69, 84, 73, 86, 128, 89, 69, 83, 84, 85, 128, 89, 69,
-    83, 73, 69, 85, 78, 71, 45, 83, 83, 65, 78, 71, 75, 73, 89, 69, 79, 75,
-    128, 89, 69, 83, 73, 69, 85, 78, 71, 45, 83, 73, 79, 83, 128, 89, 69, 83,
-    73, 69, 85, 78, 71, 45, 80, 65, 78, 83, 73, 79, 83, 128, 89, 69, 83, 73,
-    69, 85, 78, 71, 45, 77, 73, 69, 85, 77, 128, 89, 69, 83, 73, 69, 85, 78,
-    71, 45, 75, 73, 89, 69, 79, 75, 128, 89, 69, 83, 73, 69, 85, 78, 71, 45,
-    75, 72, 73, 69, 85, 75, 72, 128, 89, 69, 83, 73, 69, 85, 78, 71, 45, 72,
-    73, 69, 85, 72, 128, 89, 69, 83, 73, 69, 85, 78, 71, 128, 89, 69, 82, 85,
-    128, 89, 69, 82, 213, 89, 69, 82, 73, 128, 89, 69, 82, 65, 200, 89, 69,
-    82, 128, 89, 69, 79, 82, 73, 78, 72, 73, 69, 85, 72, 128, 89, 69, 79, 45,
-    89, 65, 128, 89, 69, 79, 45, 85, 128, 89, 69, 79, 45, 79, 128, 89, 69,
-    78, 73, 83, 69, 201, 89, 69, 78, 65, 80, 128, 89, 69, 78, 128, 89, 69,
-    206, 89, 69, 76, 76, 79, 87, 128, 89, 69, 76, 76, 79, 215, 89, 69, 73,
-    78, 128, 89, 69, 72, 128, 89, 69, 69, 71, 128, 89, 69, 69, 128, 89, 69,
-    65, 210, 89, 69, 65, 128, 89, 65, 90, 90, 128, 89, 65, 90, 72, 128, 89,
-    65, 90, 128, 89, 65, 89, 68, 128, 89, 65, 89, 65, 78, 78, 65, 128, 89,
-    65, 89, 128, 89, 65, 87, 78, 73, 78, 199, 89, 65, 87, 78, 128, 89, 65,
-    87, 128, 89, 65, 86, 128, 89, 65, 85, 128, 89, 65, 84, 84, 128, 89, 65,
-    84, 73, 128, 89, 65, 84, 72, 128, 89, 65, 84, 128, 89, 65, 83, 83, 128,
-    89, 65, 83, 72, 128, 89, 65, 83, 128, 89, 65, 82, 82, 128, 89, 65, 82,
-    78, 128, 89, 65, 82, 128, 89, 65, 210, 89, 65, 81, 128, 89, 65, 80, 128,
-    89, 65, 78, 83, 65, 89, 65, 128, 89, 65, 78, 71, 128, 89, 65, 78, 199,
-    89, 65, 78, 128, 89, 65, 77, 79, 75, 128, 89, 65, 77, 65, 75, 75, 65, 78,
-    128, 89, 65, 77, 128, 89, 65, 76, 128, 89, 65, 75, 72, 72, 128, 89, 65,
-    75, 72, 128, 89, 65, 75, 65, 83, 72, 128, 89, 65, 75, 128, 89, 65, 74,
-    85, 82, 86, 69, 68, 73, 195, 89, 65, 74, 128, 89, 65, 73, 128, 89, 65,
-    72, 72, 128, 89, 65, 72, 128, 89, 65, 71, 78, 128, 89, 65, 71, 72, 72,
-    128, 89, 65, 71, 72, 128, 89, 65, 71, 128, 89, 65, 70, 213, 89, 65, 70,
-    128, 89, 65, 69, 77, 77, 65, 69, 128, 89, 65, 68, 72, 128, 89, 65, 68,
-    68, 72, 128, 89, 65, 68, 68, 128, 89, 65, 68, 128, 89, 65, 67, 72, 128,
-    89, 65, 66, 72, 128, 89, 65, 66, 128, 89, 65, 65, 82, 85, 128, 89, 65,
-    65, 73, 128, 89, 65, 65, 68, 79, 128, 89, 65, 45, 89, 79, 128, 89, 65,
-    45, 85, 128, 89, 65, 45, 79, 128, 89, 65, 45, 53, 128, 89, 65, 45, 52,
-    128, 89, 65, 45, 51, 128, 89, 65, 45, 50, 128, 89, 65, 45, 49, 128, 89,
-    48, 48, 56, 128, 89, 48, 48, 55, 128, 89, 48, 48, 54, 128, 89, 48, 48,
-    53, 128, 89, 48, 48, 52, 128, 89, 48, 48, 51, 128, 89, 48, 48, 50, 128,
-    89, 48, 48, 49, 65, 128, 89, 48, 48, 49, 128, 89, 45, 67, 82, 69, 197,
-    88, 89, 88, 128, 88, 89, 85, 128, 88, 89, 84, 128, 88, 89, 82, 88, 128,
-    88, 89, 82, 128, 88, 89, 80, 128, 88, 89, 79, 79, 74, 128, 88, 89, 79,
-    79, 128, 88, 89, 79, 128, 88, 89, 73, 128, 88, 89, 69, 69, 205, 88, 89,
-    69, 69, 128, 88, 89, 69, 128, 88, 89, 65, 65, 128, 88, 89, 65, 128, 88,
-    89, 128, 88, 87, 73, 128, 88, 87, 69, 69, 128, 88, 87, 69, 128, 88, 87,
-    65, 65, 128, 88, 87, 65, 128, 88, 87, 128, 88, 215, 88, 86, 69, 128, 88,
-    86, 65, 128, 88, 85, 79, 88, 128, 88, 85, 79, 128, 88, 85, 128, 88, 83,
-    72, 65, 65, 89, 65, 84, 72, 73, 89, 65, 128, 88, 79, 88, 128, 88, 79, 84,
-    128, 88, 79, 82, 128, 88, 79, 80, 72, 128, 88, 79, 80, 128, 88, 79, 65,
-    128, 88, 79, 128, 88, 73, 88, 128, 88, 73, 84, 128, 88, 73, 82, 79, 206,
-    88, 73, 80, 128, 88, 73, 69, 88, 128, 88, 73, 69, 84, 128, 88, 73, 69,
-    80, 128, 88, 73, 69, 128, 88, 73, 65, 78, 71, 81, 201, 88, 73, 65, 66,
-    128, 88, 73, 128, 88, 72, 69, 89, 78, 128, 88, 71, 128, 88, 69, 89, 78,
-    128, 88, 69, 83, 84, 69, 211, 88, 69, 72, 128, 88, 69, 69, 128, 88, 69,
-    128, 88, 65, 85, 83, 128, 88, 65, 85, 128, 88, 65, 80, 72, 128, 88, 65,
-    78, 128, 88, 65, 65, 128, 88, 65, 128, 88, 48, 48, 56, 65, 128, 88, 48,
-    48, 56, 128, 88, 48, 48, 55, 128, 88, 48, 48, 54, 65, 128, 88, 48, 48,
-    54, 128, 88, 48, 48, 53, 128, 88, 48, 48, 52, 66, 128, 88, 48, 48, 52,
-    65, 128, 88, 48, 48, 52, 128, 88, 48, 48, 51, 128, 88, 48, 48, 50, 128,
-    88, 48, 48, 49, 128, 88, 45, 216, 88, 45, 82, 65, 89, 128, 87, 90, 128,
-    87, 89, 78, 78, 128, 87, 89, 78, 206, 87, 86, 73, 128, 87, 86, 69, 128,
-    87, 86, 65, 128, 87, 86, 128, 87, 85, 80, 128, 87, 85, 79, 88, 128, 87,
-    85, 79, 80, 128, 87, 85, 79, 128, 87, 85, 78, 74, 207, 87, 85, 78, 128,
-    87, 85, 76, 85, 128, 87, 85, 76, 213, 87, 85, 73, 128, 87, 85, 69, 128,
-    87, 85, 65, 69, 84, 128, 87, 85, 65, 69, 78, 128, 87, 85, 128, 87, 82,
-    217, 87, 82, 79, 78, 71, 128, 87, 82, 73, 83, 212, 87, 82, 73, 78, 75,
-    76, 69, 83, 128, 87, 82, 73, 78, 75, 76, 69, 211, 87, 82, 73, 78, 75, 76,
-    69, 68, 128, 87, 82, 69, 83, 84, 76, 69, 82, 83, 128, 87, 82, 69, 78, 67,
-    72, 128, 87, 82, 69, 65, 84, 200, 87, 82, 65, 80, 80, 69, 196, 87, 82,
-    65, 80, 128, 87, 79, 88, 128, 87, 79, 87, 128, 87, 79, 82, 83, 72, 73,
-    80, 128, 87, 79, 82, 82, 73, 69, 196, 87, 79, 82, 77, 128, 87, 79, 82,
-    76, 196, 87, 79, 82, 75, 69, 82, 128, 87, 79, 82, 75, 128, 87, 79, 82,
-    203, 87, 79, 82, 68, 83, 80, 65, 67, 69, 128, 87, 79, 82, 196, 87, 79,
-    80, 128, 87, 79, 79, 78, 128, 87, 79, 79, 76, 128, 87, 79, 79, 68, 83,
-    45, 67, 82, 69, 197, 87, 79, 79, 68, 128, 87, 79, 78, 128, 87, 79, 206,
-    87, 79, 77, 69, 78, 211, 87, 79, 77, 69, 206, 87, 79, 77, 65, 78, 211,
-    87, 79, 77, 65, 78, 128, 87, 79, 77, 65, 206, 87, 79, 76, 79, 83, 79,
-    128, 87, 79, 76, 198, 87, 79, 69, 128, 87, 79, 65, 128, 87, 79, 45, 55,
-    128, 87, 79, 45, 54, 128, 87, 79, 45, 53, 128, 87, 79, 45, 52, 128, 87,
-    79, 45, 51, 128, 87, 79, 45, 50, 128, 87, 79, 45, 49, 128, 87, 73, 84,
-    72, 79, 85, 212, 87, 73, 84, 72, 73, 78, 128, 87, 73, 84, 72, 73, 206,
-    87, 73, 82, 69, 76, 69, 83, 83, 128, 87, 73, 82, 69, 196, 87, 73, 78, 84,
-    69, 82, 128, 87, 73, 78, 75, 73, 78, 199, 87, 73, 78, 75, 128, 87, 73,
-    78, 74, 65, 128, 87, 73, 78, 71, 83, 128, 87, 73, 78, 71, 128, 87, 73,
-    78, 69, 128, 87, 73, 78, 197, 87, 73, 78, 68, 85, 128, 87, 73, 78, 68,
-    79, 87, 128, 87, 73, 78, 68, 128, 87, 73, 78, 196, 87, 73, 78, 128, 87,
-    73, 76, 84, 69, 196, 87, 73, 71, 78, 89, 65, 78, 128, 87, 73, 71, 71, 76,
-    217, 87, 73, 71, 71, 76, 69, 83, 128, 87, 73, 68, 84, 72, 128, 87, 73,
-    68, 69, 78, 73, 78, 199, 87, 73, 68, 69, 45, 72, 69, 65, 68, 69, 196, 87,
-    73, 68, 197, 87, 73, 65, 78, 71, 87, 65, 65, 75, 128, 87, 73, 65, 78, 71,
-    128, 87, 73, 45, 53, 128, 87, 73, 45, 52, 128, 87, 73, 45, 51, 128, 87,
-    73, 45, 50, 128, 87, 73, 45, 49, 128, 87, 72, 79, 76, 197, 87, 72, 73,
-    84, 69, 45, 70, 69, 65, 84, 72, 69, 82, 69, 196, 87, 72, 73, 84, 69, 128,
-    87, 72, 69, 69, 76, 69, 196, 87, 72, 69, 69, 76, 67, 72, 65, 73, 82, 128,
-    87, 72, 69, 69, 76, 67, 72, 65, 73, 210, 87, 72, 69, 69, 76, 128, 87, 72,
-    69, 69, 204, 87, 72, 69, 65, 84, 128, 87, 72, 65, 76, 69, 128, 87, 72,
-    128, 87, 71, 128, 87, 69, 88, 128, 87, 69, 85, 88, 128, 87, 69, 212, 87,
-    69, 83, 84, 69, 82, 206, 87, 69, 83, 84, 45, 67, 82, 69, 197, 87, 69, 83,
-    84, 128, 87, 69, 83, 212, 87, 69, 80, 128, 87, 69, 79, 128, 87, 69, 78,
-    128, 87, 69, 76, 76, 128, 87, 69, 73, 71, 72, 212, 87, 69, 73, 69, 82,
-    83, 84, 82, 65, 83, 211, 87, 69, 73, 128, 87, 69, 69, 78, 128, 87, 69,
-    68, 71, 69, 45, 84, 65, 73, 76, 69, 196, 87, 69, 68, 71, 69, 128, 87, 69,
-    68, 68, 73, 78, 71, 128, 87, 69, 66, 128, 87, 69, 65, 82, 217, 87, 69,
-    65, 80, 79, 78, 128, 87, 69, 45, 52, 128, 87, 69, 45, 51, 128, 87, 69,
-    45, 50, 128, 87, 69, 45, 49, 128, 87, 67, 128, 87, 66, 128, 87, 65, 89,
-    128, 87, 65, 217, 87, 65, 88, 73, 78, 199, 87, 65, 88, 128, 87, 65, 87,
-    45, 65, 89, 73, 78, 45, 82, 69, 83, 72, 128, 87, 65, 87, 128, 87, 65,
-    215, 87, 65, 86, 217, 87, 65, 86, 73, 78, 199, 87, 65, 86, 69, 83, 128,
-    87, 65, 86, 69, 128, 87, 65, 86, 197, 87, 65, 85, 128, 87, 65, 84, 84,
-    79, 128, 87, 65, 84, 69, 82, 77, 69, 76, 79, 78, 128, 87, 65, 84, 69, 82,
-    128, 87, 65, 84, 69, 210, 87, 65, 84, 67, 72, 128, 87, 65, 84, 128, 87,
-    65, 83, 84, 73, 78, 71, 128, 87, 65, 83, 84, 69, 66, 65, 83, 75, 69, 84,
-    128, 87, 65, 83, 83, 65, 76, 76, 65, 77, 128, 87, 65, 83, 76, 65, 128,
-    87, 65, 83, 76, 193, 87, 65, 83, 65, 76, 76, 65, 77, 128, 87, 65, 83, 65,
-    76, 76, 65, 205, 87, 65, 83, 45, 83, 65, 76, 65, 65, 77, 128, 87, 65, 82,
-    78, 73, 78, 199, 87, 65, 82, 65, 78, 199, 87, 65, 81, 70, 65, 128, 87,
-    65, 80, 128, 87, 65, 78, 73, 78, 199, 87, 65, 78, 71, 75, 85, 79, 81,
-    128, 87, 65, 78, 68, 69, 82, 69, 82, 128, 87, 65, 78, 68, 128, 87, 65,
-    78, 67, 72, 207, 87, 65, 78, 128, 87, 65, 76, 76, 80, 76, 65, 78, 197,
-    87, 65, 76, 76, 69, 196, 87, 65, 76, 76, 128, 87, 65, 76, 204, 87, 65,
-    76, 75, 128, 87, 65, 76, 203, 87, 65, 73, 84, 73, 78, 71, 128, 87, 65,
-    73, 83, 84, 128, 87, 65, 73, 128, 87, 65, 70, 70, 76, 69, 128, 87, 65,
-    69, 78, 128, 87, 65, 69, 128, 87, 65, 68, 68, 65, 128, 87, 65, 65, 86,
-    85, 128, 87, 65, 65, 74, 73, 66, 128, 87, 65, 65, 65, 76, 73, 72, 69,
-    197, 87, 65, 45, 84, 65, 65, 65, 76, 65, 65, 128, 87, 65, 45, 83, 65, 76,
-    76, 65, 77, 128, 87, 65, 45, 65, 65, 76, 73, 72, 128, 87, 65, 45, 53,
-    128, 87, 65, 45, 52, 128, 87, 65, 45, 51, 128, 87, 65, 45, 50, 128, 87,
-    65, 45, 49, 128, 87, 193, 87, 48, 50, 53, 128, 87, 48, 50, 52, 65, 128,
-    87, 48, 50, 52, 128, 87, 48, 50, 51, 128, 87, 48, 50, 50, 128, 87, 48,
-    50, 49, 128, 87, 48, 50, 48, 128, 87, 48, 49, 57, 128, 87, 48, 49, 56,
-    65, 128, 87, 48, 49, 56, 128, 87, 48, 49, 55, 65, 128, 87, 48, 49, 55,
-    128, 87, 48, 49, 54, 128, 87, 48, 49, 53, 128, 87, 48, 49, 52, 65, 128,
-    87, 48, 49, 52, 128, 87, 48, 49, 51, 128, 87, 48, 49, 50, 128, 87, 48,
-    49, 49, 128, 87, 48, 49, 48, 65, 128, 87, 48, 49, 48, 128, 87, 48, 48,
-    57, 65, 128, 87, 48, 48, 57, 128, 87, 48, 48, 56, 128, 87, 48, 48, 55,
-    128, 87, 48, 48, 54, 128, 87, 48, 48, 53, 128, 87, 48, 48, 52, 128, 87,
-    48, 48, 51, 65, 128, 87, 48, 48, 51, 128, 87, 48, 48, 50, 128, 87, 48,
-    48, 49, 128, 86, 90, 77, 69, 84, 128, 86, 90, 128, 86, 89, 88, 128, 86,
-    89, 84, 128, 86, 89, 83, 79, 75, 79, 128, 86, 89, 83, 79, 75, 207, 86,
-    89, 82, 88, 128, 86, 89, 82, 128, 86, 89, 80, 128, 86, 89, 128, 86, 88,
-    128, 86, 87, 74, 128, 86, 87, 65, 128, 86, 87, 128, 86, 85, 88, 128, 86,
-    85, 85, 128, 86, 85, 84, 128, 86, 85, 82, 88, 128, 86, 85, 82, 128, 86,
-    85, 80, 128, 86, 85, 76, 71, 65, 210, 86, 85, 76, 67, 65, 78, 85, 83,
-    128, 86, 85, 69, 81, 128, 86, 84, 83, 128, 86, 84, 128, 86, 83, 57, 57,
-    128, 86, 83, 57, 56, 128, 86, 83, 57, 55, 128, 86, 83, 57, 54, 128, 86,
-    83, 57, 53, 128, 86, 83, 57, 52, 128, 86, 83, 57, 51, 128, 86, 83, 57,
-    50, 128, 86, 83, 57, 49, 128, 86, 83, 57, 48, 128, 86, 83, 57, 128, 86,
-    83, 56, 57, 128, 86, 83, 56, 56, 128, 86, 83, 56, 55, 128, 86, 83, 56,
-    54, 128, 86, 83, 56, 53, 128, 86, 83, 56, 52, 128, 86, 83, 56, 51, 128,
-    86, 83, 56, 50, 128, 86, 83, 56, 49, 128, 86, 83, 56, 48, 128, 86, 83,
-    56, 128, 86, 83, 55, 57, 128, 86, 83, 55, 56, 128, 86, 83, 55, 55, 128,
-    86, 83, 55, 54, 128, 86, 83, 55, 53, 128, 86, 83, 55, 52, 128, 86, 83,
-    55, 51, 128, 86, 83, 55, 50, 128, 86, 83, 55, 49, 128, 86, 83, 55, 48,
-    128, 86, 83, 55, 128, 86, 83, 54, 57, 128, 86, 83, 54, 56, 128, 86, 83,
-    54, 55, 128, 86, 83, 54, 54, 128, 86, 83, 54, 53, 128, 86, 83, 54, 52,
-    128, 86, 83, 54, 51, 128, 86, 83, 54, 50, 128, 86, 83, 54, 49, 128, 86,
-    83, 54, 48, 128, 86, 83, 54, 128, 86, 83, 53, 57, 128, 86, 83, 53, 56,
-    128, 86, 83, 53, 55, 128, 86, 83, 53, 54, 128, 86, 83, 53, 53, 128, 86,
-    83, 53, 52, 128, 86, 83, 53, 51, 128, 86, 83, 53, 50, 128, 86, 83, 53,
-    49, 128, 86, 83, 53, 48, 128, 86, 83, 53, 128, 86, 83, 52, 57, 128, 86,
-    83, 52, 56, 128, 86, 83, 52, 55, 128, 86, 83, 52, 54, 128, 86, 83, 52,
-    53, 128, 86, 83, 52, 52, 128, 86, 83, 52, 51, 128, 86, 83, 52, 50, 128,
-    86, 83, 52, 49, 128, 86, 83, 52, 48, 128, 86, 83, 52, 128, 86, 83, 51,
-    57, 128, 86, 83, 51, 56, 128, 86, 83, 51, 55, 128, 86, 83, 51, 54, 128,
-    86, 83, 51, 53, 128, 86, 83, 51, 52, 128, 86, 83, 51, 51, 128, 86, 83,
-    51, 50, 128, 86, 83, 51, 49, 128, 86, 83, 51, 48, 128, 86, 83, 51, 128,
-    86, 83, 50, 57, 128, 86, 83, 50, 56, 128, 86, 83, 50, 55, 128, 86, 83,
-    50, 54, 128, 86, 83, 50, 53, 54, 128, 86, 83, 50, 53, 53, 128, 86, 83,
-    50, 53, 52, 128, 86, 83, 50, 53, 51, 128, 86, 83, 50, 53, 50, 128, 86,
-    83, 50, 53, 49, 128, 86, 83, 50, 53, 48, 128, 86, 83, 50, 53, 128, 86,
-    83, 50, 52, 57, 128, 86, 83, 50, 52, 56, 128, 86, 83, 50, 52, 55, 128,
-    86, 83, 50, 52, 54, 128, 86, 83, 50, 52, 53, 128, 86, 83, 50, 52, 52,
-    128, 86, 83, 50, 52, 51, 128, 86, 83, 50, 52, 50, 128, 86, 83, 50, 52,
-    49, 128, 86, 83, 50, 52, 48, 128, 86, 83, 50, 52, 128, 86, 83, 50, 51,
-    57, 128, 86, 83, 50, 51, 56, 128, 86, 83, 50, 51, 55, 128, 86, 83, 50,
-    51, 54, 128, 86, 83, 50, 51, 53, 128, 86, 83, 50, 51, 52, 128, 86, 83,
-    50, 51, 51, 128, 86, 83, 50, 51, 50, 128, 86, 83, 50, 51, 49, 128, 86,
-    83, 50, 51, 48, 128, 86, 83, 50, 51, 128, 86, 83, 50, 50, 57, 128, 86,
-    83, 50, 50, 56, 128, 86, 83, 50, 50, 55, 128, 86, 83, 50, 50, 54, 128,
-    86, 83, 50, 50, 53, 128, 86, 83, 50, 50, 52, 128, 86, 83, 50, 50, 51,
-    128, 86, 83, 50, 50, 50, 128, 86, 83, 50, 50, 49, 128, 86, 83, 50, 50,
-    48, 128, 86, 83, 50, 50, 128, 86, 83, 50, 49, 57, 128, 86, 83, 50, 49,
-    56, 128, 86, 83, 50, 49, 55, 128, 86, 83, 50, 49, 54, 128, 86, 83, 50,
-    49, 53, 128, 86, 83, 50, 49, 52, 128, 86, 83, 50, 49, 51, 128, 86, 83,
-    50, 49, 50, 128, 86, 83, 50, 49, 49, 128, 86, 83, 50, 49, 48, 128, 86,
-    83, 50, 49, 128, 86, 83, 50, 48, 57, 128, 86, 83, 50, 48, 56, 128, 86,
-    83, 50, 48, 55, 128, 86, 83, 50, 48, 54, 128, 86, 83, 50, 48, 53, 128,
-    86, 83, 50, 48, 52, 128, 86, 83, 50, 48, 51, 128, 86, 83, 50, 48, 50,
-    128, 86, 83, 50, 48, 49, 128, 86, 83, 50, 48, 48, 128, 86, 83, 50, 48,
-    128, 86, 83, 50, 128, 86, 83, 49, 57, 57, 128, 86, 83, 49, 57, 56, 128,
-    86, 83, 49, 57, 55, 128, 86, 83, 49, 57, 54, 128, 86, 83, 49, 57, 53,
-    128, 86, 83, 49, 57, 52, 128, 86, 83, 49, 57, 51, 128, 86, 83, 49, 57,
-    50, 128, 86, 83, 49, 57, 49, 128, 86, 83, 49, 57, 48, 128, 86, 83, 49,
-    57, 128, 86, 83, 49, 56, 57, 128, 86, 83, 49, 56, 56, 128, 86, 83, 49,
-    56, 55, 128, 86, 83, 49, 56, 54, 128, 86, 83, 49, 56, 53, 128, 86, 83,
-    49, 56, 52, 128, 86, 83, 49, 56, 51, 128, 86, 83, 49, 56, 50, 128, 86,
-    83, 49, 56, 49, 128, 86, 83, 49, 56, 48, 128, 86, 83, 49, 56, 128, 86,
-    83, 49, 55, 57, 128, 86, 83, 49, 55, 56, 128, 86, 83, 49, 55, 55, 128,
-    86, 83, 49, 55, 54, 128, 86, 83, 49, 55, 53, 128, 86, 83, 49, 55, 52,
-    128, 86, 83, 49, 55, 51, 128, 86, 83, 49, 55, 50, 128, 86, 83, 49, 55,
-    49, 128, 86, 83, 49, 55, 48, 128, 86, 83, 49, 55, 128, 86, 83, 49, 54,
-    57, 128, 86, 83, 49, 54, 56, 128, 86, 83, 49, 54, 55, 128, 86, 83, 49,
-    54, 54, 128, 86, 83, 49, 54, 53, 128, 86, 83, 49, 54, 52, 128, 86, 83,
-    49, 54, 51, 128, 86, 83, 49, 54, 50, 128, 86, 83, 49, 54, 49, 128, 86,
-    83, 49, 54, 48, 128, 86, 83, 49, 54, 128, 86, 83, 49, 53, 57, 128, 86,
-    83, 49, 53, 56, 128, 86, 83, 49, 53, 55, 128, 86, 83, 49, 53, 54, 128,
-    86, 83, 49, 53, 53, 128, 86, 83, 49, 53, 52, 128, 86, 83, 49, 53, 51,
-    128, 86, 83, 49, 53, 50, 128, 86, 83, 49, 53, 49, 128, 86, 83, 49, 53,
-    48, 128, 86, 83, 49, 53, 128, 86, 83, 49, 52, 57, 128, 86, 83, 49, 52,
-    56, 128, 86, 83, 49, 52, 55, 128, 86, 83, 49, 52, 54, 128, 86, 83, 49,
-    52, 53, 128, 86, 83, 49, 52, 52, 128, 86, 83, 49, 52, 51, 128, 86, 83,
-    49, 52, 50, 128, 86, 83, 49, 52, 49, 128, 86, 83, 49, 52, 48, 128, 86,
-    83, 49, 52, 128, 86, 83, 49, 51, 57, 128, 86, 83, 49, 51, 56, 128, 86,
-    83, 49, 51, 55, 128, 86, 83, 49, 51, 54, 128, 86, 83, 49, 51, 53, 128,
-    86, 83, 49, 51, 52, 128, 86, 83, 49, 51, 51, 128, 86, 83, 49, 51, 50,
-    128, 86, 83, 49, 51, 49, 128, 86, 83, 49, 51, 48, 128, 86, 83, 49, 51,
-    128, 86, 83, 49, 50, 57, 128, 86, 83, 49, 50, 56, 128, 86, 83, 49, 50,
-    55, 128, 86, 83, 49, 50, 54, 128, 86, 83, 49, 50, 53, 128, 86, 83, 49,
-    50, 52, 128, 86, 83, 49, 50, 51, 128, 86, 83, 49, 50, 50, 128, 86, 83,
-    49, 50, 49, 128, 86, 83, 49, 50, 48, 128, 86, 83, 49, 50, 128, 86, 83,
-    49, 49, 57, 128, 86, 83, 49, 49, 56, 128, 86, 83, 49, 49, 55, 128, 86,
-    83, 49, 49, 54, 128, 86, 83, 49, 49, 53, 128, 86, 83, 49, 49, 52, 128,
-    86, 83, 49, 49, 51, 128, 86, 83, 49, 49, 50, 128, 86, 83, 49, 49, 49,
-    128, 86, 83, 49, 49, 48, 128, 86, 83, 49, 49, 128, 86, 83, 49, 48, 57,
-    128, 86, 83, 49, 48, 56, 128, 86, 83, 49, 48, 55, 128, 86, 83, 49, 48,
-    54, 128, 86, 83, 49, 48, 53, 128, 86, 83, 49, 48, 52, 128, 86, 83, 49,
-    48, 51, 128, 86, 83, 49, 48, 50, 128, 86, 83, 49, 48, 49, 128, 86, 83,
-    49, 48, 48, 128, 86, 83, 49, 48, 128, 86, 83, 49, 128, 86, 83, 128, 86,
-    82, 65, 75, 72, 73, 89, 193, 86, 82, 65, 67, 72, 89, 128, 86, 81, 128,
-    86, 79, 88, 128, 86, 79, 87, 69, 76, 45, 67, 65, 82, 82, 73, 69, 210, 86,
-    79, 87, 128, 86, 79, 85, 128, 86, 79, 84, 128, 86, 79, 211, 86, 79, 80,
-    128, 86, 79, 79, 73, 128, 86, 79, 79, 128, 86, 79, 77, 73, 84, 73, 78,
-    71, 128, 86, 79, 77, 128, 86, 79, 76, 85, 77, 197, 86, 79, 76, 84, 65,
-    71, 197, 86, 79, 76, 76, 69, 89, 66, 65, 76, 76, 128, 86, 79, 76, 67, 65,
-    78, 79, 128, 86, 79, 76, 65, 80, 85, 203, 86, 79, 73, 68, 69, 196, 86,
-    79, 73, 196, 86, 79, 73, 67, 73, 78, 71, 128, 86, 79, 73, 67, 69, 76, 69,
-    83, 211, 86, 79, 73, 67, 69, 196, 86, 79, 68, 128, 86, 79, 67, 65, 76,
-    73, 90, 65, 84, 73, 79, 206, 86, 79, 67, 65, 204, 86, 79, 128, 86, 73,
-    89, 79, 128, 86, 73, 88, 128, 86, 73, 84, 82, 73, 79, 76, 45, 50, 128,
-    86, 73, 84, 82, 73, 79, 76, 128, 86, 73, 84, 72, 75, 85, 81, 201, 86, 73,
-    84, 65, 69, 45, 50, 128, 86, 73, 84, 65, 69, 128, 86, 73, 84, 128, 86,
-    73, 83, 73, 71, 79, 84, 72, 73, 195, 86, 73, 83, 65, 82, 71, 65, 89, 65,
-    128, 86, 73, 83, 65, 82, 71, 65, 128, 86, 73, 83, 65, 82, 71, 193, 86,
-    73, 82, 73, 65, 77, 128, 86, 73, 82, 71, 79, 128, 86, 73, 82, 71, 65,
-    128, 86, 73, 82, 65, 77, 65, 128, 86, 73, 80, 128, 86, 73, 79, 76, 73,
-    78, 128, 86, 73, 78, 69, 71, 65, 82, 45, 51, 128, 86, 73, 78, 69, 71, 65,
-    82, 45, 50, 128, 86, 73, 78, 69, 71, 65, 82, 128, 86, 73, 78, 69, 71, 65,
-    210, 86, 73, 78, 69, 128, 86, 73, 78, 197, 86, 73, 78, 128, 86, 73, 76,
-    76, 65, 71, 69, 128, 86, 73, 73, 128, 86, 73, 71, 73, 78, 84, 73, 76, 69,
-    128, 86, 73, 69, 88, 128, 86, 73, 69, 87, 73, 78, 199, 86, 73, 69, 87,
-    69, 82, 128, 86, 73, 69, 87, 68, 65, 84, 193, 86, 73, 69, 84, 78, 65, 77,
-    69, 83, 197, 86, 73, 69, 84, 128, 86, 73, 69, 212, 86, 73, 69, 80, 128,
-    86, 73, 69, 128, 86, 73, 68, 74, 45, 50, 128, 86, 73, 68, 74, 128, 86,
-    73, 68, 69, 79, 67, 65, 83, 83, 69, 84, 84, 69, 128, 86, 73, 68, 69, 207,
-    86, 73, 68, 65, 128, 86, 73, 67, 84, 79, 82, 217, 86, 73, 66, 82, 65, 84,
-    73, 79, 206, 86, 72, 65, 128, 86, 70, 65, 128, 86, 69, 89, 90, 128, 86,
-    69, 88, 128, 86, 69, 87, 128, 86, 69, 215, 86, 69, 85, 88, 128, 86, 69,
-    85, 77, 128, 86, 69, 85, 65, 69, 80, 69, 78, 128, 86, 69, 85, 65, 69,
-    128, 86, 69, 83, 84, 65, 128, 86, 69, 83, 84, 128, 86, 69, 83, 83, 69,
-    204, 86, 69, 82, 217, 86, 69, 82, 84, 73, 67, 65, 76, 76, 89, 128, 86,
-    69, 82, 84, 73, 67, 65, 76, 76, 217, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 54, 45, 48, 54, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 54, 45,
-    48, 53, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 54, 45, 48, 52, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 54, 45, 48, 51, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 54, 45, 48, 50, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 54, 45, 48, 49, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 54, 45, 48, 48, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 53, 45,
-    48, 54, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 53, 45, 48, 53, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 53, 45, 48, 52, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 53, 45, 48, 51, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 53, 45, 48, 50, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 53, 45, 48, 49, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 53, 45,
-    48, 48, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 52, 45, 48, 54, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 52, 45, 48, 53, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 52, 45, 48, 52, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 52, 45, 48, 51, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 52, 45, 48, 50, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 52, 45,
-    48, 49, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 52, 45, 48, 48, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 51, 45, 48, 54, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 51, 45, 48, 53, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 51, 45, 48, 52, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 51, 45, 48, 51, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 51, 45,
-    48, 50, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 51, 45, 48, 49, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 51, 45, 48, 48, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 50, 45, 48, 54, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 50, 45, 48, 53, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 50, 45, 48, 52, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 50, 45,
-    48, 51, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 50, 45, 48, 50, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 50, 45, 48, 49, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 50, 45, 48, 48, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 49, 45, 48, 54, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 49, 45, 48, 53, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 49, 45,
-    48, 52, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 49, 45, 48, 51, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 49, 45, 48, 50, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 49, 45, 48, 49, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 49, 45, 48, 48, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 48, 45, 48, 54, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 48, 45,
-    48, 53, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 48, 45, 48, 52, 128,
-    86, 69, 82, 84, 73, 67, 65, 76, 45, 48, 48, 45, 48, 51, 128, 86, 69, 82,
-    84, 73, 67, 65, 76, 45, 48, 48, 45, 48, 50, 128, 86, 69, 82, 84, 73, 67,
-    65, 76, 45, 48, 48, 45, 48, 49, 128, 86, 69, 82, 84, 73, 67, 65, 76, 45,
-    48, 48, 45, 48, 48, 128, 86, 69, 82, 84, 73, 67, 65, 76, 128, 86, 69, 82,
-    83, 73, 67, 76, 69, 128, 86, 69, 82, 83, 197, 86, 69, 82, 71, 69, 128,
-    86, 69, 82, 68, 73, 71, 82, 73, 83, 128, 86, 69, 82, 128, 86, 69, 80,
-    128, 86, 69, 78, 68, 128, 86, 69, 76, 73, 128, 86, 69, 73, 76, 128, 86,
-    69, 72, 73, 67, 76, 69, 128, 86, 69, 72, 128, 86, 69, 200, 86, 69, 69,
-    128, 86, 69, 197, 86, 69, 68, 69, 128, 86, 69, 67, 84, 79, 210, 86, 67,
-    128, 86, 65, 89, 65, 78, 78, 65, 128, 86, 65, 88, 128, 86, 65, 86, 128,
-    86, 65, 214, 86, 65, 85, 128, 86, 65, 84, 72, 89, 128, 86, 65, 84, 128,
-    86, 65, 83, 84, 78, 69, 83, 211, 86, 65, 83, 73, 83, 128, 86, 65, 82, 89,
-    211, 86, 65, 82, 73, 75, 65, 128, 86, 65, 82, 73, 65, 78, 84, 128, 86,
-    65, 82, 73, 65, 78, 212, 86, 65, 82, 73, 65, 128, 86, 65, 82, 73, 193,
-    86, 65, 82, 69, 73, 65, 201, 86, 65, 82, 69, 73, 193, 86, 65, 82, 65, 65,
-    75, 65, 78, 128, 86, 65, 80, 79, 85, 82, 83, 128, 86, 65, 80, 128, 86,
-    65, 78, 69, 128, 86, 65, 77, 80, 73, 82, 69, 128, 86, 65, 77, 65, 71, 79,
-    77, 85, 75, 72, 65, 128, 86, 65, 77, 65, 71, 79, 77, 85, 75, 72, 193, 86,
-    65, 76, 76, 69, 89, 128, 86, 65, 75, 65, 73, 89, 65, 82, 65, 65, 128, 86,
-    65, 74, 128, 86, 65, 73, 128, 86, 65, 72, 128, 86, 65, 200, 86, 65, 65,
-    86, 85, 128, 86, 65, 65, 128, 86, 193, 86, 48, 52, 48, 65, 128, 86, 48,
-    52, 48, 128, 86, 48, 51, 57, 128, 86, 48, 51, 56, 128, 86, 48, 51, 55,
-    65, 128, 86, 48, 51, 55, 128, 86, 48, 51, 54, 128, 86, 48, 51, 53, 128,
-    86, 48, 51, 52, 128, 86, 48, 51, 51, 65, 128, 86, 48, 51, 51, 128, 86,
-    48, 51, 50, 128, 86, 48, 51, 49, 65, 128, 86, 48, 51, 49, 128, 86, 48,
-    51, 48, 65, 128, 86, 48, 51, 48, 128, 86, 48, 50, 57, 65, 128, 86, 48,
-    50, 57, 128, 86, 48, 50, 56, 65, 128, 86, 48, 50, 56, 128, 86, 48, 50,
-    55, 128, 86, 48, 50, 54, 128, 86, 48, 50, 53, 128, 86, 48, 50, 52, 128,
-    86, 48, 50, 51, 65, 128, 86, 48, 50, 51, 128, 86, 48, 50, 50, 128, 86,
-    48, 50, 49, 128, 86, 48, 50, 48, 76, 128, 86, 48, 50, 48, 75, 128, 86,
-    48, 50, 48, 74, 128, 86, 48, 50, 48, 73, 128, 86, 48, 50, 48, 72, 128,
-    86, 48, 50, 48, 71, 128, 86, 48, 50, 48, 70, 128, 86, 48, 50, 48, 69,
-    128, 86, 48, 50, 48, 68, 128, 86, 48, 50, 48, 67, 128, 86, 48, 50, 48,
-    66, 128, 86, 48, 50, 48, 65, 128, 86, 48, 50, 48, 128, 86, 48, 49, 57,
-    128, 86, 48, 49, 56, 128, 86, 48, 49, 55, 128, 86, 48, 49, 54, 128, 86,
-    48, 49, 53, 128, 86, 48, 49, 52, 128, 86, 48, 49, 51, 128, 86, 48, 49,
-    50, 66, 128, 86, 48, 49, 50, 65, 128, 86, 48, 49, 50, 128, 86, 48, 49,
-    49, 68, 128, 86, 48, 49, 49, 67, 128, 86, 48, 49, 49, 66, 128, 86, 48,
-    49, 49, 65, 128, 86, 48, 49, 49, 128, 86, 48, 49, 48, 128, 86, 48, 48,
-    57, 128, 86, 48, 48, 56, 128, 86, 48, 48, 55, 66, 128, 86, 48, 48, 55,
-    65, 128, 86, 48, 48, 55, 128, 86, 48, 48, 54, 128, 86, 48, 48, 53, 128,
-    86, 48, 48, 52, 128, 86, 48, 48, 51, 128, 86, 48, 48, 50, 65, 128, 86,
-    48, 48, 50, 128, 86, 48, 48, 49, 73, 128, 86, 48, 48, 49, 72, 128, 86,
-    48, 48, 49, 71, 128, 86, 48, 48, 49, 70, 128, 86, 48, 48, 49, 69, 128,
-    86, 48, 48, 49, 68, 128, 86, 48, 48, 49, 67, 128, 86, 48, 48, 49, 66,
-    128, 86, 48, 48, 49, 65, 128, 86, 48, 48, 49, 128, 85, 90, 85, 128, 85,
-    90, 72, 65, 75, 75, 85, 128, 85, 90, 51, 128, 85, 90, 179, 85, 90, 128,
-    85, 89, 71, 72, 85, 210, 85, 89, 65, 78, 78, 65, 128, 85, 89, 128, 85,
-    87, 85, 128, 85, 85, 89, 65, 78, 78, 65, 128, 85, 85, 85, 85, 128, 85,
-    85, 85, 51, 128, 85, 85, 85, 50, 128, 85, 85, 69, 128, 85, 84, 85, 75,
-    73, 128, 85, 83, 83, 85, 51, 128, 85, 83, 83, 85, 128, 85, 83, 72, 88,
-    128, 85, 83, 72, 85, 77, 88, 128, 85, 83, 72, 69, 78, 78, 65, 128, 85,
-    83, 72, 50, 128, 85, 83, 72, 128, 85, 83, 200, 85, 83, 69, 196, 85, 83,
-    69, 45, 50, 128, 85, 83, 69, 45, 49, 128, 85, 83, 69, 128, 85, 83, 197,
-    85, 82, 85, 218, 85, 82, 85, 83, 128, 85, 82, 85, 68, 65, 128, 85, 82,
-    85, 68, 193, 85, 82, 85, 128, 85, 82, 213, 85, 82, 78, 128, 85, 82, 73,
-    78, 69, 128, 85, 82, 73, 51, 128, 85, 82, 73, 128, 85, 82, 65, 78, 85,
-    83, 128, 85, 82, 65, 128, 85, 82, 52, 128, 85, 82, 50, 128, 85, 82, 178,
-    85, 80, 87, 65, 82, 68, 83, 128, 85, 80, 87, 65, 82, 68, 211, 85, 80, 87,
-    65, 82, 68, 128, 85, 80, 87, 65, 82, 196, 85, 80, 84, 85, 82, 78, 128,
-    85, 80, 83, 73, 76, 79, 78, 128, 85, 80, 83, 73, 76, 79, 206, 85, 80, 83,
-    73, 68, 69, 45, 68, 79, 87, 206, 85, 80, 82, 73, 71, 72, 212, 85, 80, 80,
-    69, 82, 128, 85, 80, 65, 68, 72, 77, 65, 78, 73, 89, 65, 128, 85, 80, 45,
-    80, 79, 73, 78, 84, 73, 78, 199, 85, 79, 78, 128, 85, 79, 71, 128, 85,
-    78, 78, 128, 85, 78, 77, 65, 82, 82, 73, 69, 196, 85, 78, 75, 78, 79, 87,
-    78, 128, 85, 78, 75, 128, 85, 78, 73, 86, 69, 82, 83, 65, 204, 85, 78,
-    73, 84, 89, 128, 85, 78, 73, 84, 69, 196, 85, 78, 73, 84, 128, 85, 78,
-    73, 212, 85, 78, 73, 79, 78, 128, 85, 78, 73, 79, 206, 85, 78, 73, 70,
-    79, 82, 77, 128, 85, 78, 73, 70, 73, 69, 196, 85, 78, 73, 67, 79, 82,
-    206, 85, 78, 69, 86, 69, 206, 85, 78, 68, 207, 85, 78, 68, 69, 82, 84,
-    73, 69, 128, 85, 78, 68, 69, 82, 76, 73, 78, 197, 85, 78, 68, 69, 82, 68,
-    79, 84, 128, 85, 78, 68, 69, 82, 66, 65, 82, 128, 85, 78, 68, 69, 82,
-    128, 85, 78, 68, 69, 210, 85, 78, 67, 73, 193, 85, 78, 67, 69, 82, 84,
-    65, 73, 78, 84, 217, 85, 78, 66, 76, 69, 78, 68, 69, 196, 85, 78, 65, 83,
-    80, 73, 82, 65, 84, 69, 68, 128, 85, 78, 65, 80, 128, 85, 78, 65, 77, 85,
-    83, 69, 196, 85, 78, 65, 128, 85, 206, 85, 77, 85, 77, 128, 85, 77, 85,
-    205, 85, 77, 66, 82, 69, 76, 76, 65, 128, 85, 77, 66, 82, 69, 76, 76,
-    193, 85, 77, 66, 73, 78, 128, 85, 75, 85, 128, 85, 75, 82, 65, 73, 78,
-    73, 65, 206, 85, 75, 65, 82, 65, 128, 85, 75, 65, 82, 193, 85, 75, 128,
-    85, 73, 90, 128, 85, 73, 88, 128, 85, 73, 85, 90, 128, 85, 73, 85, 88,
-    128, 85, 73, 85, 81, 128, 85, 73, 85, 67, 128, 85, 73, 81, 128, 85, 73,
-    76, 76, 69, 65, 78, 78, 128, 85, 73, 71, 72, 85, 210, 85, 73, 67, 128,
-    85, 72, 68, 128, 85, 71, 65, 82, 73, 84, 73, 195, 85, 69, 90, 128, 85,
-    69, 89, 128, 85, 69, 88, 128, 85, 69, 78, 128, 85, 69, 73, 128, 85, 69,
-    69, 128, 85, 69, 67, 128, 85, 69, 65, 128, 85, 68, 85, 71, 128, 85, 68,
-    65, 84, 84, 65, 128, 85, 68, 65, 84, 84, 193, 85, 68, 65, 82, 75, 65,
-    128, 85, 68, 65, 65, 84, 128, 85, 68, 128, 85, 196, 85, 66, 85, 70, 73,
-    76, 73, 128, 85, 66, 72, 65, 89, 65, 84, 207, 85, 66, 65, 68, 65, 77, 65,
-    128, 85, 66, 128, 85, 65, 84, 72, 128, 85, 65, 78, 71, 128, 85, 65, 128,
-    85, 178, 85, 48, 52, 50, 128, 85, 48, 52, 49, 128, 85, 48, 52, 48, 128,
-    85, 48, 51, 57, 128, 85, 48, 51, 56, 128, 85, 48, 51, 55, 128, 85, 48,
-    51, 54, 128, 85, 48, 51, 53, 128, 85, 48, 51, 52, 128, 85, 48, 51, 51,
-    128, 85, 48, 51, 50, 65, 128, 85, 48, 51, 50, 128, 85, 48, 51, 49, 128,
-    85, 48, 51, 48, 128, 85, 48, 50, 57, 65, 128, 85, 48, 50, 57, 128, 85,
-    48, 50, 56, 128, 85, 48, 50, 55, 128, 85, 48, 50, 54, 128, 85, 48, 50,
-    53, 128, 85, 48, 50, 52, 128, 85, 48, 50, 51, 65, 128, 85, 48, 50, 51,
-    128, 85, 48, 50, 50, 128, 85, 48, 50, 49, 128, 85, 48, 50, 48, 128, 85,
-    48, 49, 57, 128, 85, 48, 49, 56, 128, 85, 48, 49, 55, 128, 85, 48, 49,
-    54, 128, 85, 48, 49, 53, 128, 85, 48, 49, 52, 128, 85, 48, 49, 51, 128,
-    85, 48, 49, 50, 128, 85, 48, 49, 49, 128, 85, 48, 49, 48, 128, 85, 48,
-    48, 57, 128, 85, 48, 48, 56, 128, 85, 48, 48, 55, 128, 85, 48, 48, 54,
-    66, 128, 85, 48, 48, 54, 65, 128, 85, 48, 48, 54, 128, 85, 48, 48, 53,
-    128, 85, 48, 48, 52, 128, 85, 48, 48, 51, 128, 85, 48, 48, 50, 128, 85,
-    48, 48, 49, 128, 85, 45, 83, 72, 65, 80, 69, 196, 85, 45, 73, 45, 73,
-    128, 85, 45, 69, 79, 45, 69, 85, 128, 85, 45, 66, 82, 74, 71, 85, 128,
-    85, 45, 53, 128, 84, 90, 85, 128, 84, 90, 79, 65, 128, 84, 90, 79, 128,
-    84, 90, 73, 210, 84, 90, 73, 128, 84, 90, 69, 69, 128, 84, 90, 69, 128,
-    84, 90, 65, 65, 128, 84, 90, 65, 128, 84, 90, 128, 84, 89, 210, 84, 89,
-    80, 69, 45, 183, 84, 89, 80, 69, 45, 54, 128, 84, 89, 80, 69, 45, 182,
-    84, 89, 80, 69, 45, 53, 128, 84, 89, 80, 69, 45, 181, 84, 89, 80, 69, 45,
-    52, 128, 84, 89, 80, 69, 45, 180, 84, 89, 80, 69, 45, 51, 128, 84, 89,
-    80, 69, 45, 179, 84, 89, 80, 69, 45, 178, 84, 89, 80, 69, 45, 49, 45, 50,
-    128, 84, 89, 80, 69, 45, 177, 84, 89, 80, 197, 84, 89, 79, 128, 84, 89,
-    73, 128, 84, 89, 69, 128, 84, 89, 65, 89, 128, 84, 89, 65, 128, 84, 88,
-    87, 86, 128, 84, 88, 87, 214, 84, 88, 72, 69, 69, 202, 84, 88, 65, 128,
-    84, 87, 79, 79, 128, 84, 87, 79, 45, 87, 65, 217, 84, 87, 79, 45, 84, 72,
-    73, 82, 84, 89, 128, 84, 87, 79, 45, 76, 73, 78, 197, 84, 87, 79, 45, 72,
-    69, 65, 68, 69, 196, 84, 87, 79, 45, 69, 205, 84, 87, 79, 45, 67, 73, 82,
-    67, 76, 197, 84, 87, 73, 83, 84, 73, 78, 71, 128, 84, 87, 73, 83, 84, 69,
-    196, 84, 87, 73, 73, 128, 84, 87, 73, 128, 84, 87, 69, 78, 84, 89, 45,
-    84, 87, 79, 128, 84, 87, 69, 78, 84, 89, 45, 84, 87, 207, 84, 87, 69, 78,
-    84, 89, 45, 84, 72, 82, 69, 69, 128, 84, 87, 69, 78, 84, 89, 45, 83, 73,
-    88, 128, 84, 87, 69, 78, 84, 89, 45, 83, 69, 86, 69, 78, 128, 84, 87, 69,
-    78, 84, 89, 45, 79, 78, 69, 128, 84, 87, 69, 78, 84, 89, 45, 78, 73, 78,
-    69, 128, 84, 87, 69, 78, 84, 89, 45, 70, 79, 85, 82, 128, 84, 87, 69, 78,
-    84, 89, 45, 70, 73, 86, 69, 128, 84, 87, 69, 78, 84, 89, 45, 70, 73, 86,
-    197, 84, 87, 69, 78, 84, 89, 45, 69, 73, 71, 72, 84, 200, 84, 87, 69, 78,
-    84, 89, 45, 69, 73, 71, 72, 84, 128, 84, 87, 69, 78, 84, 89, 128, 84, 87,
-    69, 78, 84, 217, 84, 87, 69, 78, 84, 73, 69, 84, 72, 83, 128, 84, 87, 69,
-    78, 84, 73, 69, 84, 72, 128, 84, 87, 69, 76, 86, 69, 45, 84, 72, 73, 82,
-    84, 89, 128, 84, 87, 69, 76, 86, 69, 128, 84, 87, 69, 76, 86, 197, 84,
-    87, 69, 76, 70, 84, 72, 83, 128, 84, 87, 69, 76, 70, 84, 72, 128, 84, 87,
-    69, 128, 84, 87, 65, 65, 128, 84, 87, 65, 128, 84, 86, 82, 73, 68, 79,
-    128, 84, 86, 73, 77, 65, 68, 85, 210, 84, 85, 88, 69, 68, 79, 128, 84,
-    85, 88, 128, 84, 85, 85, 77, 85, 128, 84, 85, 85, 128, 84, 85, 84, 84,
-    89, 128, 84, 85, 84, 69, 89, 65, 83, 65, 84, 128, 84, 85, 84, 128, 84,
-    85, 82, 88, 128, 84, 85, 82, 85, 128, 84, 85, 82, 84, 76, 69, 128, 84,
-    85, 82, 79, 50, 128, 84, 85, 82, 78, 83, 84, 73, 76, 69, 128, 84, 85, 82,
-    206, 84, 85, 82, 75, 73, 83, 200, 84, 85, 82, 75, 73, 195, 84, 85, 82,
-    75, 69, 89, 128, 84, 85, 82, 66, 65, 78, 128, 84, 85, 82, 128, 84, 85,
-    210, 84, 85, 80, 78, 73, 128, 84, 85, 80, 128, 84, 85, 79, 88, 128, 84,
-    85, 79, 84, 128, 84, 85, 79, 80, 128, 84, 85, 79, 128, 84, 85, 78, 78,
-    89, 128, 84, 85, 77, 69, 84, 69, 83, 128, 84, 85, 77, 66, 76, 69, 210,
-    84, 85, 77, 65, 69, 128, 84, 85, 77, 128, 84, 85, 205, 84, 85, 76, 73,
-    80, 128, 84, 85, 75, 87, 69, 78, 84, 73, 83, 128, 84, 85, 75, 128, 84,
-    85, 71, 82, 73, 203, 84, 85, 71, 50, 128, 84, 85, 71, 178, 84, 85, 66,
-    69, 128, 84, 85, 66, 128, 84, 85, 65, 82, 69, 199, 84, 85, 65, 69, 80,
-    128, 84, 85, 65, 69, 128, 84, 85, 45, 84, 79, 128, 84, 85, 45, 52, 128,
-    84, 85, 45, 51, 128, 84, 85, 45, 50, 128, 84, 85, 45, 49, 128, 84, 213,
-    84, 84, 85, 85, 128, 84, 84, 85, 68, 68, 65, 71, 128, 84, 84, 85, 68, 68,
-    65, 65, 71, 128, 84, 84, 85, 128, 84, 84, 84, 72, 65, 128, 84, 84, 84,
-    65, 128, 84, 84, 83, 85, 128, 84, 84, 83, 79, 128, 84, 84, 83, 73, 128,
-    84, 84, 83, 69, 69, 128, 84, 84, 83, 69, 128, 84, 84, 83, 65, 128, 84,
-    84, 79, 79, 128, 84, 84, 73, 73, 128, 84, 84, 73, 128, 84, 84, 72, 87,
-    69, 128, 84, 84, 72, 85, 128, 84, 84, 72, 79, 79, 128, 84, 84, 72, 79,
-    128, 84, 84, 72, 73, 128, 84, 84, 72, 69, 69, 128, 84, 84, 72, 69, 128,
-    84, 84, 72, 65, 65, 128, 84, 84, 72, 128, 84, 84, 69, 72, 69, 72, 128,
-    84, 84, 69, 72, 69, 200, 84, 84, 69, 72, 128, 84, 84, 69, 200, 84, 84,
-    69, 69, 128, 84, 84, 65, 89, 65, 78, 78, 65, 128, 84, 84, 65, 85, 128,
-    84, 84, 65, 73, 128, 84, 84, 65, 65, 128, 84, 84, 50, 128, 84, 83, 87,
-    69, 128, 84, 83, 87, 66, 128, 84, 83, 87, 65, 128, 84, 83, 86, 128, 84,
-    83, 83, 69, 128, 84, 83, 83, 65, 128, 84, 83, 79, 214, 84, 83, 73, 85,
-    128, 84, 83, 72, 85, 71, 83, 128, 84, 83, 72, 79, 79, 75, 128, 84, 83,
-    72, 79, 79, 203, 84, 83, 72, 79, 79, 74, 128, 84, 83, 72, 69, 83, 128,
-    84, 83, 72, 69, 71, 128, 84, 83, 72, 69, 199, 84, 83, 72, 69, 69, 74,
-    128, 84, 83, 72, 69, 128, 84, 83, 72, 65, 194, 84, 83, 72, 65, 128, 84,
-    83, 69, 82, 69, 128, 84, 83, 69, 69, 66, 128, 84, 83, 65, 84, 193, 84,
-    83, 65, 68, 73, 128, 84, 83, 65, 68, 201, 84, 83, 65, 66, 128, 84, 83,
-    65, 65, 68, 73, 89, 128, 84, 83, 65, 65, 128, 84, 83, 193, 84, 82, 89,
-    66, 76, 73, 79, 206, 84, 82, 89, 65, 83, 79, 83, 84, 82, 69, 76, 78, 65,
-    89, 65, 128, 84, 82, 89, 65, 83, 79, 80, 79, 86, 79, 68, 78, 65, 89, 65,
-    128, 84, 82, 89, 65, 83, 79, 71, 76, 65, 83, 78, 65, 89, 65, 128, 84, 82,
-    89, 65, 83, 75, 65, 128, 84, 82, 85, 84, 72, 128, 84, 82, 85, 78, 75,
-    128, 84, 82, 85, 78, 67, 65, 84, 69, 196, 84, 82, 85, 77, 80, 69, 84,
-    128, 84, 82, 85, 77, 80, 45, 57, 128, 84, 82, 85, 77, 80, 45, 56, 128,
-    84, 82, 85, 77, 80, 45, 55, 128, 84, 82, 85, 77, 80, 45, 54, 128, 84, 82,
-    85, 77, 80, 45, 53, 128, 84, 82, 85, 77, 80, 45, 52, 128, 84, 82, 85, 77,
-    80, 45, 51, 128, 84, 82, 85, 77, 80, 45, 50, 49, 128, 84, 82, 85, 77, 80,
-    45, 50, 48, 128, 84, 82, 85, 77, 80, 45, 50, 128, 84, 82, 85, 77, 80, 45,
-    49, 57, 128, 84, 82, 85, 77, 80, 45, 49, 56, 128, 84, 82, 85, 77, 80, 45,
-    49, 55, 128, 84, 82, 85, 77, 80, 45, 49, 54, 128, 84, 82, 85, 77, 80, 45,
-    49, 53, 128, 84, 82, 85, 77, 80, 45, 49, 52, 128, 84, 82, 85, 77, 80, 45,
-    49, 51, 128, 84, 82, 85, 77, 80, 45, 49, 50, 128, 84, 82, 85, 77, 80, 45,
-    49, 49, 128, 84, 82, 85, 77, 80, 45, 49, 48, 128, 84, 82, 85, 77, 80, 45,
-    49, 128, 84, 82, 85, 69, 128, 84, 82, 85, 197, 84, 82, 85, 67, 75, 128,
-    84, 82, 79, 80, 73, 67, 65, 204, 84, 82, 79, 80, 72, 89, 128, 84, 82, 79,
-    77, 73, 75, 79, 83, 89, 78, 65, 71, 77, 65, 128, 84, 82, 79, 77, 73, 75,
-    79, 80, 83, 73, 70, 73, 83, 84, 79, 78, 128, 84, 82, 79, 77, 73, 75, 79,
-    80, 65, 82, 65, 75, 65, 76, 69, 83, 77, 65, 128, 84, 82, 79, 77, 73, 75,
-    79, 78, 128, 84, 82, 79, 77, 73, 75, 79, 206, 84, 82, 79, 77, 73, 75, 79,
-    76, 89, 71, 73, 83, 77, 65, 128, 84, 82, 79, 76, 76, 69, 89, 66, 85, 83,
-    128, 84, 82, 79, 76, 76, 69, 89, 128, 84, 82, 79, 76, 76, 128, 84, 82,
-    79, 75, 85, 84, 65, 83, 84, 201, 84, 82, 79, 69, 90, 69, 78, 73, 65, 206,
-    84, 82, 73, 85, 77, 80, 72, 128, 84, 82, 73, 84, 79, 211, 84, 82, 73, 84,
-    73, 77, 79, 82, 73, 79, 78, 128, 84, 82, 73, 83, 73, 77, 79, 85, 128, 84,
-    82, 73, 83, 69, 77, 69, 128, 84, 82, 73, 80, 79, 68, 128, 84, 82, 73, 80,
-    76, 73, 128, 84, 82, 73, 80, 76, 69, 128, 84, 82, 73, 80, 76, 197, 84,
-    82, 73, 79, 206, 84, 82, 73, 76, 76, 73, 79, 78, 83, 128, 84, 82, 73, 76,
-    76, 128, 84, 82, 73, 73, 83, 65, 80, 128, 84, 82, 73, 71, 82, 65, 77, 77,
-    79, 211, 84, 82, 73, 71, 82, 65, 205, 84, 82, 73, 71, 79, 82, 71, 79, 78,
-    128, 84, 82, 73, 70, 79, 78, 73, 65, 83, 128, 84, 82, 73, 70, 79, 76, 73,
-    65, 84, 197, 84, 82, 73, 68, 69, 78, 84, 128, 84, 82, 73, 68, 69, 78,
-    212, 84, 82, 73, 67, 79, 76, 79, 78, 128, 84, 82, 73, 65, 78, 71, 85, 76,
-    65, 210, 84, 82, 73, 65, 78, 71, 76, 69, 45, 82, 79, 85, 78, 196, 84, 82,
-    73, 65, 78, 71, 76, 69, 45, 72, 69, 65, 68, 69, 196, 84, 82, 73, 65, 78,
-    71, 76, 69, 128, 84, 82, 73, 65, 78, 71, 76, 197, 84, 82, 73, 65, 128,
-    84, 82, 73, 128, 84, 82, 69, 83, 86, 69, 84, 76, 89, 128, 84, 82, 69, 83,
-    86, 69, 84, 76, 79, 128, 84, 82, 69, 83, 86, 69, 84, 76, 65, 89, 65, 128,
-    84, 82, 69, 83, 73, 76, 76, 79, 128, 84, 82, 69, 78, 68, 128, 84, 82, 69,
-    78, 196, 84, 82, 69, 77, 79, 76, 79, 45, 51, 128, 84, 82, 69, 77, 79, 76,
-    79, 45, 50, 128, 84, 82, 69, 77, 79, 76, 79, 45, 49, 128, 84, 82, 69, 69,
-    128, 84, 82, 69, 197, 84, 82, 69, 68, 69, 67, 73, 76, 69, 128, 84, 82,
-    69, 65, 68, 73, 78, 71, 128, 84, 82, 65, 89, 128, 84, 82, 65, 86, 69, 76,
-    45, 87, 65, 76, 76, 80, 76, 65, 78, 197, 84, 82, 65, 86, 69, 76, 45, 70,
-    76, 79, 79, 82, 80, 76, 65, 78, 197, 84, 82, 65, 80, 69, 90, 73, 85, 77,
-    128, 84, 82, 65, 80, 128, 84, 82, 65, 78, 83, 86, 69, 82, 83, 65, 204,
-    84, 82, 65, 78, 83, 80, 79, 83, 73, 84, 73, 79, 206, 84, 82, 65, 78, 83,
-    80, 76, 85, 84, 79, 128, 84, 82, 65, 78, 83, 77, 73, 212, 84, 82, 65, 78,
-    83, 77, 73, 83, 83, 73, 79, 78, 128, 84, 82, 65, 78, 83, 77, 73, 83, 83,
-    73, 79, 206, 84, 82, 65, 77, 87, 65, 89, 128, 84, 82, 65, 77, 128, 84,
-    82, 65, 205, 84, 82, 65, 73, 78, 128, 84, 82, 65, 73, 206, 84, 82, 65,
-    73, 76, 73, 78, 199, 84, 82, 65, 70, 70, 73, 67, 128, 84, 82, 65, 70, 70,
-    73, 195, 84, 82, 65, 68, 73, 84, 73, 79, 78, 65, 204, 84, 82, 65, 68,
-    197, 84, 82, 65, 67, 84, 79, 82, 128, 84, 82, 65, 67, 75, 66, 65, 76, 76,
-    128, 84, 82, 65, 67, 75, 128, 84, 82, 65, 128, 84, 82, 128, 84, 79, 89,
-    79, 82, 128, 84, 79, 88, 128, 84, 79, 87, 69, 82, 128, 84, 79, 87, 65,
-    82, 68, 211, 84, 79, 86, 128, 84, 79, 85, 82, 78, 79, 73, 211, 84, 79,
-    85, 67, 72, 84, 79, 78, 197, 84, 79, 85, 67, 72, 73, 78, 199, 84, 79, 85,
-    67, 72, 69, 211, 84, 79, 85, 67, 200, 84, 79, 84, 207, 84, 79, 84, 65,
-    204, 84, 79, 84, 128, 84, 79, 83, 128, 84, 79, 82, 84, 79, 73, 83, 197,
-    84, 79, 82, 83, 79, 45, 87, 65, 76, 76, 80, 76, 65, 78, 197, 84, 79, 82,
-    83, 79, 45, 70, 76, 79, 79, 82, 80, 76, 65, 78, 197, 84, 79, 82, 83, 79,
-    128, 84, 79, 82, 78, 65, 68, 79, 128, 84, 79, 82, 67, 85, 76, 85, 83,
-    128, 84, 79, 82, 67, 85, 76, 85, 211, 84, 79, 82, 67, 72, 128, 84, 79,
-    81, 128, 84, 79, 80, 66, 65, 82, 128, 84, 79, 80, 45, 76, 73, 71, 72, 84,
-    69, 196, 84, 79, 80, 128, 84, 79, 208, 84, 79, 79, 84, 72, 66, 82, 85,
-    83, 72, 128, 84, 79, 79, 84, 72, 128, 84, 79, 79, 78, 128, 84, 79, 79,
-    76, 66, 79, 88, 128, 84, 79, 78, 79, 83, 128, 84, 79, 78, 71, 85, 69,
-    128, 84, 79, 78, 71, 85, 197, 84, 79, 78, 71, 128, 84, 79, 78, 69, 45,
-    86, 128, 84, 79, 78, 69, 45, 83, 128, 84, 79, 78, 69, 45, 77, 128, 84,
-    79, 78, 69, 45, 74, 128, 84, 79, 78, 69, 45, 71, 128, 84, 79, 78, 69, 45,
-    68, 128, 84, 79, 78, 69, 45, 66, 128, 84, 79, 78, 69, 45, 56, 128, 84,
-    79, 78, 69, 45, 55, 128, 84, 79, 78, 69, 45, 54, 128, 84, 79, 78, 69, 45,
-    53, 128, 84, 79, 78, 69, 45, 52, 128, 84, 79, 78, 69, 45, 51, 128, 84,
-    79, 78, 69, 45, 50, 128, 84, 79, 78, 69, 45, 49, 128, 84, 79, 78, 69,
-    128, 84, 79, 78, 65, 204, 84, 79, 77, 80, 73, 128, 84, 79, 77, 65, 84,
-    79, 128, 84, 79, 76, 79, 78, 71, 128, 84, 79, 75, 89, 207, 84, 79, 73,
-    76, 69, 84, 128, 84, 79, 71, 69, 84, 72, 69, 82, 128, 84, 79, 68, 207,
-    84, 79, 67, 72, 75, 65, 128, 84, 79, 65, 78, 68, 65, 75, 72, 73, 65, 84,
-    128, 84, 79, 65, 128, 84, 79, 45, 82, 65, 128, 84, 79, 45, 54, 128, 84,
-    79, 45, 53, 128, 84, 79, 45, 52, 128, 84, 79, 45, 51, 128, 84, 79, 45,
-    50, 128, 84, 79, 45, 49, 128, 84, 78, 128, 84, 76, 86, 128, 84, 76, 85,
-    128, 84, 76, 73, 128, 84, 76, 72, 89, 65, 128, 84, 76, 72, 87, 69, 128,
-    84, 76, 72, 85, 128, 84, 76, 72, 79, 79, 128, 84, 76, 72, 79, 128, 84,
-    76, 72, 73, 128, 84, 76, 72, 69, 69, 128, 84, 76, 72, 69, 128, 84, 76,
-    72, 65, 128, 84, 76, 69, 69, 128, 84, 76, 65, 128, 84, 74, 69, 128, 84,
-    73, 88, 128, 84, 73, 87, 82, 128, 84, 73, 87, 78, 128, 84, 73, 87, 65,
-    218, 84, 73, 84, 85, 65, 69, 80, 128, 84, 73, 84, 76, 79, 128, 84, 73,
-    84, 76, 207, 84, 73, 84, 193, 84, 73, 84, 128, 84, 73, 82, 89, 65, 75,
-    128, 84, 73, 82, 84, 193, 84, 73, 82, 79, 78, 73, 65, 206, 84, 73, 82,
-    72, 85, 84, 193, 84, 73, 82, 69, 196, 84, 73, 82, 128, 84, 73, 210, 84,
-    73, 80, 80, 73, 128, 84, 73, 80, 69, 72, 65, 128, 84, 73, 80, 128, 84,
-    73, 208, 84, 73, 78, 89, 128, 84, 73, 78, 217, 84, 73, 78, 78, 69, 128,
-    84, 73, 78, 67, 84, 85, 82, 69, 128, 84, 73, 78, 65, 71, 77, 65, 128, 84,
-    73, 77, 69, 83, 128, 84, 73, 77, 69, 210, 84, 73, 77, 69, 128, 84, 73,
-    76, 84, 73, 78, 71, 128, 84, 73, 76, 84, 73, 78, 199, 84, 73, 76, 84,
-    128, 84, 73, 76, 69, 83, 128, 84, 73, 76, 68, 69, 128, 84, 73, 76, 68,
-    197, 84, 73, 76, 128, 84, 73, 204, 84, 73, 75, 72, 89, 128, 84, 73, 75,
-    72, 65, 89, 65, 128, 84, 73, 75, 72, 65, 89, 193, 84, 73, 75, 69, 85, 84,
-    45, 84, 72, 73, 69, 85, 84, 72, 128, 84, 73, 75, 69, 85, 84, 45, 83, 73,
-    79, 83, 45, 75, 73, 89, 69, 79, 75, 128, 84, 73, 75, 69, 85, 84, 45, 83,
-    73, 79, 83, 128, 84, 73, 75, 69, 85, 84, 45, 82, 73, 69, 85, 76, 128, 84,
-    73, 75, 69, 85, 84, 45, 80, 73, 69, 85, 80, 128, 84, 73, 75, 69, 85, 84,
-    45, 77, 73, 69, 85, 77, 128, 84, 73, 75, 69, 85, 84, 45, 75, 73, 89, 69,
-    79, 75, 128, 84, 73, 75, 69, 85, 84, 45, 67, 73, 69, 85, 67, 128, 84, 73,
-    75, 69, 85, 84, 45, 67, 72, 73, 69, 85, 67, 72, 128, 84, 73, 75, 69, 85,
-    84, 128, 84, 73, 75, 69, 85, 212, 84, 73, 71, 72, 84, 76, 89, 45, 67, 76,
-    79, 83, 69, 196, 84, 73, 71, 72, 212, 84, 73, 71, 69, 82, 128, 84, 73,
-    71, 69, 210, 84, 73, 70, 73, 78, 65, 71, 200, 84, 73, 69, 88, 128, 84,
-    73, 69, 80, 128, 84, 73, 197, 84, 73, 67, 75, 69, 84, 83, 128, 84, 73,
-    67, 75, 69, 84, 128, 84, 73, 67, 75, 128, 84, 73, 67, 203, 84, 73, 65,
-    82, 65, 128, 84, 73, 50, 128, 84, 73, 45, 55, 128, 84, 73, 45, 54, 128,
-    84, 73, 45, 53, 128, 84, 73, 45, 52, 128, 84, 73, 45, 51, 128, 84, 73,
-    45, 50, 128, 84, 73, 45, 49, 128, 84, 72, 90, 128, 84, 72, 89, 79, 79,
-    205, 84, 72, 87, 79, 79, 128, 84, 72, 87, 79, 128, 84, 72, 87, 73, 73,
-    128, 84, 72, 87, 73, 128, 84, 72, 87, 69, 69, 128, 84, 72, 87, 65, 65,
-    128, 84, 72, 87, 65, 128, 84, 72, 85, 82, 211, 84, 72, 85, 82, 73, 83,
-    65, 218, 84, 72, 85, 78, 71, 128, 84, 72, 85, 78, 68, 69, 82, 83, 84, 79,
-    82, 77, 128, 84, 72, 85, 78, 68, 69, 82, 128, 84, 72, 85, 78, 68, 69,
-    210, 84, 72, 85, 77, 66, 211, 84, 72, 85, 77, 66, 128, 84, 72, 82, 79,
-    87, 73, 78, 199, 84, 72, 82, 79, 85, 71, 72, 128, 84, 72, 82, 79, 85, 71,
-    200, 84, 72, 82, 69, 69, 45, 84, 72, 73, 82, 84, 89, 128, 84, 72, 82, 69,
-    69, 45, 81, 85, 65, 82, 84, 69, 210, 84, 72, 82, 69, 69, 45, 80, 69, 82,
-    45, 69, 205, 84, 72, 82, 69, 69, 45, 76, 73, 78, 197, 84, 72, 82, 69, 69,
-    45, 76, 69, 71, 71, 69, 196, 84, 72, 82, 69, 69, 45, 72, 85, 78, 68, 82,
-    69, 68, 45, 65, 78, 68, 45, 84, 87, 69, 78, 84, 73, 69, 84, 72, 128, 84,
-    72, 82, 69, 69, 45, 69, 205, 84, 72, 82, 69, 69, 45, 68, 79, 212, 84, 72,
-    82, 69, 69, 45, 196, 84, 72, 82, 69, 69, 45, 67, 73, 82, 67, 76, 197, 84,
-    72, 82, 69, 65, 68, 128, 84, 72, 79, 85, 83, 65, 78, 68, 83, 128, 84, 72,
-    79, 85, 83, 65, 78, 68, 211, 84, 72, 79, 85, 83, 65, 78, 196, 84, 72, 79,
-    85, 71, 72, 212, 84, 72, 79, 85, 128, 84, 72, 79, 82, 78, 128, 84, 72,
-    79, 82, 206, 84, 72, 79, 78, 71, 128, 84, 72, 79, 78, 199, 84, 72, 79,
-    77, 128, 84, 72, 79, 74, 128, 84, 72, 79, 65, 128, 84, 72, 207, 84, 72,
-    73, 85, 84, 72, 128, 84, 72, 73, 84, 65, 128, 84, 72, 73, 82, 84, 89, 45,
-    83, 69, 67, 79, 78, 68, 128, 84, 72, 73, 82, 84, 89, 45, 83, 69, 67, 79,
-    78, 196, 84, 72, 73, 82, 84, 89, 45, 79, 78, 69, 128, 84, 72, 73, 82, 84,
-    89, 45, 70, 73, 86, 197, 84, 72, 73, 82, 84, 217, 84, 72, 73, 82, 84, 69,
-    69, 78, 128, 84, 72, 73, 82, 84, 69, 69, 206, 84, 72, 73, 82, 68, 83,
-    128, 84, 72, 73, 82, 68, 211, 84, 72, 73, 82, 68, 45, 83, 84, 65, 71,
-    197, 84, 72, 73, 82, 68, 128, 84, 72, 73, 82, 196, 84, 72, 73, 78, 75,
-    73, 78, 199, 84, 72, 73, 78, 71, 128, 84, 72, 73, 73, 128, 84, 72, 73,
-    71, 72, 128, 84, 72, 73, 69, 85, 84, 200, 84, 72, 73, 67, 203, 84, 72,
-    73, 65, 66, 128, 84, 72, 69, 89, 128, 84, 72, 69, 84, 72, 69, 128, 84,
-    72, 69, 84, 72, 128, 84, 72, 69, 84, 65, 128, 84, 72, 69, 84, 193, 84,
-    72, 69, 83, 80, 73, 65, 206, 84, 72, 69, 83, 69, 79, 83, 128, 84, 72, 69,
-    83, 69, 79, 211, 84, 72, 69, 211, 84, 72, 69, 82, 77, 79, 77, 69, 84, 69,
-    82, 128, 84, 72, 69, 82, 77, 79, 68, 89, 78, 65, 77, 73, 67, 128, 84, 72,
-    69, 82, 69, 70, 79, 82, 69, 128, 84, 72, 69, 82, 197, 84, 72, 69, 206,
-    84, 72, 69, 77, 65, 84, 73, 83, 77, 79, 211, 84, 72, 69, 77, 65, 128, 84,
-    72, 69, 77, 193, 84, 72, 69, 72, 128, 84, 72, 69, 200, 84, 72, 69, 65,
-    128, 84, 72, 197, 84, 72, 65, 87, 128, 84, 72, 65, 78, 84, 72, 65, 75,
-    72, 65, 84, 128, 84, 72, 65, 78, 78, 65, 128, 84, 72, 65, 78, 128, 84,
-    72, 65, 206, 84, 72, 65, 77, 69, 68, 72, 128, 84, 72, 65, 76, 128, 84,
-    72, 65, 204, 84, 72, 65, 74, 128, 84, 72, 65, 201, 84, 72, 65, 72, 65,
-    78, 128, 84, 72, 65, 65, 78, 193, 84, 72, 65, 65, 76, 85, 128, 84, 72,
-    45, 67, 82, 69, 197, 84, 69, 88, 84, 128, 84, 69, 88, 212, 84, 69, 88,
-    128, 84, 69, 86, 73, 82, 128, 84, 69, 85, 84, 69, 85, 88, 128, 84, 69,
-    85, 84, 69, 85, 87, 69, 78, 128, 84, 69, 85, 84, 128, 84, 69, 85, 78,
-    128, 84, 69, 85, 65, 69, 81, 128, 84, 69, 85, 65, 69, 78, 128, 84, 69,
-    85, 128, 84, 69, 84, 82, 65, 83, 73, 77, 79, 85, 128, 84, 69, 84, 82, 65,
-    83, 69, 77, 69, 128, 84, 69, 84, 82, 65, 80, 76, 73, 128, 84, 69, 84, 82,
-    65, 71, 82, 65, 205, 84, 69, 84, 82, 65, 70, 79, 78, 73, 65, 83, 128, 84,
-    69, 84, 72, 128, 84, 69, 84, 200, 84, 69, 84, 65, 82, 84, 79, 211, 84,
-    69, 84, 65, 82, 84, 73, 77, 79, 82, 73, 79, 78, 128, 84, 69, 84, 128, 84,
-    69, 212, 84, 69, 83, 212, 84, 69, 83, 83, 69, 82, 65, 128, 84, 69, 83,
-    83, 69, 82, 193, 84, 69, 83, 83, 65, 82, 79, 206, 84, 69, 83, 200, 84,
-    69, 82, 77, 73, 78, 65, 84, 79, 82, 128, 84, 69, 82, 77, 73, 78, 65, 204,
-    84, 69, 80, 128, 84, 69, 78, 85, 84, 79, 128, 84, 69, 78, 85, 128, 84,
-    69, 78, 213, 84, 69, 78, 84, 72, 128, 84, 69, 78, 84, 128, 84, 69, 78,
-    83, 69, 128, 84, 69, 78, 83, 197, 84, 69, 78, 83, 128, 84, 69, 78, 211,
-    84, 69, 78, 78, 73, 211, 84, 69, 78, 71, 197, 84, 69, 78, 45, 84, 72, 73,
-    82, 84, 89, 128, 84, 69, 78, 128, 84, 69, 206, 84, 69, 77, 80, 85, 211,
-    84, 69, 77, 80, 76, 69, 128, 84, 69, 76, 85, 71, 213, 84, 69, 76, 85,
-    128, 84, 69, 76, 79, 85, 211, 84, 69, 76, 76, 69, 210, 84, 69, 76, 73,
-    83, 72, 193, 84, 69, 76, 69, 86, 73, 83, 73, 79, 78, 128, 84, 69, 76, 69,
-    83, 67, 79, 80, 69, 128, 84, 69, 76, 69, 80, 72, 79, 78, 69, 128, 84, 69,
-    76, 69, 80, 72, 79, 78, 197, 84, 69, 76, 69, 73, 65, 128, 84, 69, 76, 69,
-    71, 82, 65, 80, 200, 84, 69, 75, 128, 84, 69, 73, 87, 83, 128, 84, 69,
-    71, 69, 72, 128, 84, 69, 69, 84, 72, 128, 84, 69, 69, 84, 200, 84, 69,
-    69, 78, 83, 128, 84, 69, 69, 69, 69, 128, 84, 69, 197, 84, 69, 68, 85,
-    78, 71, 128, 84, 69, 68, 68, 217, 84, 69, 65, 82, 83, 128, 84, 69, 65,
-    82, 211, 84, 69, 65, 82, 68, 82, 79, 80, 45, 83, 80, 79, 75, 69, 196, 84,
-    69, 65, 82, 68, 82, 79, 80, 45, 83, 72, 65, 78, 75, 69, 196, 84, 69, 65,
-    82, 68, 82, 79, 80, 45, 66, 65, 82, 66, 69, 196, 84, 69, 65, 82, 45, 79,
-    70, 198, 84, 69, 65, 82, 128, 84, 69, 65, 80, 79, 84, 128, 84, 69, 65,
-    67, 85, 208, 84, 69, 65, 128, 84, 69, 45, 85, 128, 84, 69, 45, 57, 128,
-    84, 69, 45, 56, 128, 84, 69, 45, 55, 128, 84, 69, 45, 54, 128, 84, 69,
-    45, 53, 128, 84, 69, 45, 52, 128, 84, 69, 45, 51, 128, 84, 69, 45, 50,
-    128, 84, 69, 45, 49, 128, 84, 67, 72, 69, 72, 69, 72, 128, 84, 67, 72,
-    69, 72, 69, 200, 84, 67, 72, 69, 72, 128, 84, 67, 72, 69, 200, 84, 67,
-    72, 69, 128, 84, 195, 84, 65, 89, 128, 84, 65, 88, 73, 128, 84, 65, 88,
-    128, 84, 65, 87, 69, 76, 76, 69, 77, 69, 212, 84, 65, 87, 65, 128, 84,
-    65, 87, 128, 84, 65, 215, 84, 65, 86, 73, 89, 65, 78, 73, 128, 84, 65,
-    86, 128, 84, 65, 214, 84, 65, 85, 82, 85, 83, 128, 84, 65, 85, 77, 128,
-    84, 65, 213, 84, 65, 84, 87, 69, 69, 76, 128, 84, 65, 84, 87, 69, 69,
-    204, 84, 65, 84, 84, 79, 79, 69, 196, 84, 65, 84, 128, 84, 65, 83, 83,
-    73, 128, 84, 65, 83, 72, 69, 69, 76, 128, 84, 65, 83, 128, 84, 65, 82,
-    85, 78, 71, 128, 84, 65, 82, 84, 65, 82, 45, 50, 128, 84, 65, 82, 84, 65,
-    82, 128, 84, 65, 82, 71, 69, 84, 128, 84, 65, 81, 128, 84, 65, 80, 69,
-    82, 128, 84, 65, 80, 197, 84, 65, 80, 128, 84, 65, 79, 128, 84, 65, 78,
-    78, 69, 196, 84, 65, 78, 71, 83, 193, 84, 65, 78, 71, 69, 82, 73, 78, 69,
-    128, 84, 65, 78, 71, 69, 78, 84, 128, 84, 65, 78, 71, 69, 78, 212, 84,
-    65, 78, 199, 84, 65, 78, 65, 66, 65, 84, 193, 84, 65, 78, 65, 128, 84,
-    65, 78, 128, 84, 65, 77, 73, 78, 71, 128, 84, 65, 77, 65, 206, 84, 65,
-    77, 65, 76, 69, 128, 84, 65, 77, 128, 84, 65, 76, 76, 217, 84, 65, 76,
-    76, 128, 84, 65, 76, 204, 84, 65, 76, 73, 78, 71, 128, 84, 65, 76, 73,
-    78, 199, 84, 65, 76, 69, 78, 84, 83, 128, 84, 65, 76, 69, 78, 212, 84,
-    65, 75, 82, 201, 84, 65, 75, 72, 65, 76, 76, 85, 83, 128, 84, 65, 75, 69,
-    79, 85, 212, 84, 65, 75, 69, 128, 84, 65, 75, 52, 128, 84, 65, 75, 180,
-    84, 65, 75, 128, 84, 65, 73, 83, 89, 79, 85, 128, 84, 65, 73, 76, 76, 69,
-    83, 211, 84, 65, 73, 76, 128, 84, 65, 73, 204, 84, 65, 72, 65, 76, 65,
-    128, 84, 65, 72, 128, 84, 65, 200, 84, 65, 71, 66, 65, 78, 87, 193, 84,
-    65, 71, 65, 76, 79, 199, 84, 65, 71, 128, 84, 65, 199, 84, 65, 69, 206,
-    84, 65, 67, 79, 128, 84, 65, 67, 75, 128, 84, 65, 67, 203, 84, 65, 66,
-    85, 76, 65, 84, 73, 79, 78, 128, 84, 65, 66, 85, 76, 65, 84, 73, 79, 206,
-    84, 65, 66, 83, 128, 84, 65, 66, 76, 69, 128, 84, 65, 66, 76, 197, 84,
-    65, 66, 65, 65, 82, 65, 75, 193, 84, 65, 66, 128, 84, 65, 194, 84, 65,
-    65, 83, 72, 65, 69, 128, 84, 65, 65, 81, 128, 84, 65, 65, 77, 128, 84,
-    65, 65, 76, 85, 74, 193, 84, 65, 65, 73, 128, 84, 65, 65, 70, 128, 84,
-    65, 50, 128, 84, 65, 45, 82, 79, 76, 128, 84, 65, 45, 52, 128, 84, 65,
-    45, 51, 128, 84, 65, 45, 50, 128, 84, 65, 45, 49, 128, 84, 48, 51, 54,
-    128, 84, 48, 51, 53, 128, 84, 48, 51, 52, 128, 84, 48, 51, 51, 65, 128,
-    84, 48, 51, 51, 128, 84, 48, 51, 50, 65, 128, 84, 48, 51, 50, 128, 84,
-    48, 51, 49, 128, 84, 48, 51, 48, 128, 84, 48, 50, 57, 128, 84, 48, 50,
-    56, 128, 84, 48, 50, 55, 128, 84, 48, 50, 54, 128, 84, 48, 50, 53, 128,
-    84, 48, 50, 52, 128, 84, 48, 50, 51, 128, 84, 48, 50, 50, 128, 84, 48,
-    50, 49, 128, 84, 48, 50, 48, 128, 84, 48, 49, 57, 128, 84, 48, 49, 56,
-    128, 84, 48, 49, 55, 128, 84, 48, 49, 54, 65, 128, 84, 48, 49, 54, 128,
-    84, 48, 49, 53, 128, 84, 48, 49, 52, 128, 84, 48, 49, 51, 128, 84, 48,
-    49, 50, 128, 84, 48, 49, 49, 65, 128, 84, 48, 49, 49, 128, 84, 48, 49,
-    48, 128, 84, 48, 48, 57, 65, 128, 84, 48, 48, 57, 128, 84, 48, 48, 56,
-    65, 128, 84, 48, 48, 56, 128, 84, 48, 48, 55, 65, 128, 84, 48, 48, 55,
-    128, 84, 48, 48, 54, 128, 84, 48, 48, 53, 128, 84, 48, 48, 52, 128, 84,
-    48, 48, 51, 65, 128, 84, 48, 48, 51, 128, 84, 48, 48, 50, 128, 84, 48,
-    48, 49, 128, 84, 45, 83, 72, 73, 82, 84, 128, 84, 45, 82, 69, 88, 128,
-    83, 90, 90, 128, 83, 90, 87, 71, 128, 83, 90, 87, 65, 128, 83, 90, 85,
-    128, 83, 90, 79, 128, 83, 90, 73, 128, 83, 90, 69, 69, 128, 83, 90, 69,
-    128, 83, 90, 65, 65, 128, 83, 90, 65, 128, 83, 90, 128, 83, 89, 88, 128,
-    83, 89, 84, 128, 83, 89, 83, 84, 69, 205, 83, 89, 82, 88, 128, 83, 89,
-    82, 77, 65, 84, 73, 75, 73, 128, 83, 89, 82, 77, 65, 128, 83, 89, 82, 73,
-    78, 71, 69, 128, 83, 89, 82, 73, 65, 195, 83, 89, 82, 128, 83, 89, 80,
-    128, 83, 89, 79, 85, 87, 65, 128, 83, 89, 78, 69, 86, 77, 65, 128, 83,
-    89, 78, 68, 69, 83, 77, 79, 211, 83, 89, 78, 67, 72, 82, 79, 78, 79, 85,
-    211, 83, 89, 78, 65, 71, 79, 71, 85, 69, 128, 83, 89, 78, 65, 71, 77,
-    193, 83, 89, 78, 65, 70, 73, 128, 83, 89, 78, 128, 83, 89, 77, 77, 69,
-    84, 82, 89, 128, 83, 89, 77, 77, 69, 84, 82, 73, 195, 83, 89, 77, 66, 79,
-    76, 83, 128, 83, 89, 77, 66, 79, 76, 211, 83, 89, 77, 66, 79, 76, 45, 57,
-    128, 83, 89, 77, 66, 79, 76, 45, 56, 128, 83, 89, 77, 66, 79, 76, 45, 55,
-    128, 83, 89, 77, 66, 79, 76, 45, 54, 128, 83, 89, 77, 66, 79, 76, 45, 53,
-    52, 128, 83, 89, 77, 66, 79, 76, 45, 53, 51, 128, 83, 89, 77, 66, 79, 76,
-    45, 53, 50, 128, 83, 89, 77, 66, 79, 76, 45, 53, 49, 128, 83, 89, 77, 66,
-    79, 76, 45, 53, 48, 128, 83, 89, 77, 66, 79, 76, 45, 53, 128, 83, 89, 77,
-    66, 79, 76, 45, 52, 57, 128, 83, 89, 77, 66, 79, 76, 45, 52, 56, 128, 83,
-    89, 77, 66, 79, 76, 45, 52, 55, 128, 83, 89, 77, 66, 79, 76, 45, 52, 53,
-    128, 83, 89, 77, 66, 79, 76, 45, 52, 51, 128, 83, 89, 77, 66, 79, 76, 45,
-    52, 50, 128, 83, 89, 77, 66, 79, 76, 45, 52, 48, 128, 83, 89, 77, 66, 79,
-    76, 45, 52, 128, 83, 89, 77, 66, 79, 76, 45, 51, 57, 128, 83, 89, 77, 66,
-    79, 76, 45, 51, 56, 128, 83, 89, 77, 66, 79, 76, 45, 51, 55, 128, 83, 89,
-    77, 66, 79, 76, 45, 51, 54, 128, 83, 89, 77, 66, 79, 76, 45, 51, 50, 128,
-    83, 89, 77, 66, 79, 76, 45, 51, 48, 128, 83, 89, 77, 66, 79, 76, 45, 51,
-    128, 83, 89, 77, 66, 79, 76, 45, 50, 57, 128, 83, 89, 77, 66, 79, 76, 45,
-    50, 55, 128, 83, 89, 77, 66, 79, 76, 45, 50, 54, 128, 83, 89, 77, 66, 79,
-    76, 45, 50, 53, 128, 83, 89, 77, 66, 79, 76, 45, 50, 52, 128, 83, 89, 77,
-    66, 79, 76, 45, 50, 51, 128, 83, 89, 77, 66, 79, 76, 45, 50, 50, 128, 83,
-    89, 77, 66, 79, 76, 45, 50, 49, 128, 83, 89, 77, 66, 79, 76, 45, 50, 48,
-    128, 83, 89, 77, 66, 79, 76, 45, 50, 128, 83, 89, 77, 66, 79, 76, 45, 49,
-    57, 128, 83, 89, 77, 66, 79, 76, 45, 49, 56, 128, 83, 89, 77, 66, 79, 76,
-    45, 49, 55, 128, 83, 89, 77, 66, 79, 76, 45, 49, 54, 128, 83, 89, 77, 66,
-    79, 76, 45, 49, 53, 128, 83, 89, 77, 66, 79, 76, 45, 49, 52, 128, 83, 89,
-    77, 66, 79, 76, 45, 49, 51, 128, 83, 89, 77, 66, 79, 76, 45, 49, 50, 128,
-    83, 89, 77, 66, 79, 76, 45, 49, 49, 128, 83, 89, 77, 66, 79, 76, 45, 49,
-    48, 128, 83, 89, 77, 66, 79, 76, 45, 49, 128, 83, 89, 76, 79, 84, 201,
-    83, 89, 73, 128, 83, 89, 128, 83, 87, 90, 128, 83, 87, 85, 78, 199, 83,
-    87, 79, 82, 68, 83, 128, 83, 87, 79, 82, 68, 128, 83, 87, 79, 79, 128,
-    83, 87, 79, 128, 83, 87, 73, 82, 204, 83, 87, 73, 77, 83, 85, 73, 84,
-    128, 83, 87, 73, 77, 77, 73, 78, 71, 128, 83, 87, 73, 77, 77, 69, 82,
-    128, 83, 87, 73, 73, 128, 83, 87, 73, 128, 83, 87, 71, 128, 83, 87, 69,
-    69, 84, 128, 83, 87, 69, 69, 212, 83, 87, 69, 65, 84, 128, 83, 87, 69,
-    65, 212, 83, 87, 65, 83, 200, 83, 87, 65, 80, 80, 73, 78, 71, 128, 83,
-    87, 65, 78, 128, 83, 87, 65, 65, 128, 83, 87, 128, 83, 86, 65, 83, 84,
-    201, 83, 86, 65, 82, 73, 84, 65, 128, 83, 86, 65, 82, 73, 84, 193, 83,
-    85, 88, 128, 83, 85, 85, 128, 83, 85, 84, 85, 72, 128, 83, 85, 84, 82,
-    193, 83, 85, 84, 128, 83, 85, 83, 80, 69, 78, 83, 73, 79, 206, 83, 85,
-    83, 72, 73, 128, 83, 85, 82, 89, 65, 128, 83, 85, 82, 88, 128, 83, 85,
-    82, 82, 79, 85, 78, 68, 128, 83, 85, 82, 82, 79, 85, 78, 196, 83, 85, 82,
-    70, 69, 82, 128, 83, 85, 82, 70, 65, 67, 197, 83, 85, 82, 69, 128, 83,
-    85, 82, 65, 78, 71, 128, 83, 85, 82, 57, 128, 83, 85, 82, 128, 83, 85,
-    210, 83, 85, 80, 82, 65, 76, 73, 78, 69, 65, 210, 83, 85, 80, 69, 82, 86,
-    73, 83, 69, 128, 83, 85, 80, 69, 82, 86, 73, 76, 76, 65, 73, 78, 128, 83,
-    85, 80, 69, 82, 83, 69, 84, 128, 83, 85, 80, 69, 82, 83, 69, 212, 83, 85,
-    80, 69, 82, 83, 67, 82, 73, 80, 212, 83, 85, 80, 69, 82, 73, 77, 80, 79,
-    83, 69, 196, 83, 85, 80, 69, 82, 72, 69, 82, 79, 128, 83, 85, 80, 69, 82,
-    70, 73, 88, 69, 196, 83, 85, 80, 69, 210, 83, 85, 80, 128, 83, 85, 79,
-    88, 128, 83, 85, 79, 80, 128, 83, 85, 79, 128, 83, 85, 78, 83, 69, 212,
-    83, 85, 78, 82, 73, 83, 69, 128, 83, 85, 78, 82, 73, 83, 197, 83, 85, 78,
-    71, 76, 65, 83, 83, 69, 83, 128, 83, 85, 78, 71, 128, 83, 85, 78, 70, 76,
-    79, 87, 69, 82, 128, 83, 85, 78, 68, 65, 78, 69, 83, 197, 83, 85, 78,
-    128, 83, 85, 206, 83, 85, 77, 77, 69, 82, 128, 83, 85, 77, 77, 65, 84,
-    73, 79, 78, 128, 83, 85, 77, 77, 65, 84, 73, 79, 206, 83, 85, 77, 65, 83,
-    72, 128, 83, 85, 77, 128, 83, 85, 76, 70, 85, 82, 128, 83, 85, 75, 85,
-    78, 128, 83, 85, 75, 85, 206, 83, 85, 75, 85, 128, 83, 85, 75, 213, 83,
-    85, 73, 84, 65, 66, 76, 69, 128, 83, 85, 73, 212, 83, 85, 72, 85, 82,
-    128, 83, 85, 69, 128, 83, 85, 68, 50, 128, 83, 85, 68, 128, 83, 85, 67,
-    75, 73, 78, 199, 83, 85, 67, 75, 69, 68, 128, 83, 85, 67, 203, 83, 85,
-    67, 67, 69, 69, 68, 83, 128, 83, 85, 67, 67, 69, 69, 68, 211, 83, 85, 67,
-    67, 69, 69, 68, 128, 83, 85, 67, 67, 69, 69, 196, 83, 85, 66, 85, 78, 73,
-    84, 128, 83, 85, 66, 83, 84, 73, 84, 85, 84, 73, 79, 206, 83, 85, 66, 83,
-    84, 73, 84, 85, 84, 69, 128, 83, 85, 66, 83, 84, 73, 84, 85, 84, 197, 83,
-    85, 66, 83, 69, 84, 128, 83, 85, 66, 83, 69, 212, 83, 85, 66, 83, 67, 82,
-    73, 80, 212, 83, 85, 66, 80, 85, 78, 67, 84, 73, 83, 128, 83, 85, 66, 76,
-    73, 78, 69, 65, 210, 83, 85, 66, 76, 73, 77, 65, 84, 73, 79, 78, 128, 83,
-    85, 66, 76, 73, 77, 65, 84, 69, 45, 51, 128, 83, 85, 66, 76, 73, 77, 65,
-    84, 69, 45, 50, 128, 83, 85, 66, 76, 73, 77, 65, 84, 69, 128, 83, 85, 66,
-    76, 73, 77, 65, 84, 197, 83, 85, 66, 74, 79, 73, 78, 69, 82, 128, 83, 85,
-    66, 74, 79, 73, 78, 69, 196, 83, 85, 66, 74, 69, 67, 84, 128, 83, 85, 66,
-    73, 84, 79, 128, 83, 85, 66, 72, 65, 65, 78, 65, 72, 213, 83, 85, 66, 71,
-    82, 79, 85, 80, 128, 83, 85, 66, 71, 82, 79, 85, 208, 83, 85, 66, 128,
-    83, 85, 65, 77, 128, 83, 85, 65, 69, 84, 128, 83, 85, 65, 69, 78, 128,
-    83, 85, 65, 69, 128, 83, 85, 65, 66, 128, 83, 85, 65, 128, 83, 85, 45,
-    56, 128, 83, 85, 45, 55, 128, 83, 85, 45, 54, 128, 83, 85, 45, 53, 128,
-    83, 85, 45, 52, 128, 83, 85, 45, 51, 128, 83, 85, 45, 50, 128, 83, 85,
-    45, 49, 128, 83, 213, 83, 84, 88, 128, 83, 84, 87, 65, 128, 83, 84, 85,
-    80, 65, 128, 83, 84, 85, 70, 70, 69, 196, 83, 84, 85, 68, 89, 128, 83,
-    84, 85, 68, 73, 207, 83, 84, 85, 67, 75, 45, 79, 85, 212, 83, 84, 83,
-    128, 83, 84, 82, 79, 78, 199, 83, 84, 82, 79, 75, 69, 83, 128, 83, 84,
-    82, 79, 75, 69, 211, 83, 84, 82, 79, 75, 69, 45, 57, 128, 83, 84, 82, 79,
-    75, 69, 45, 56, 128, 83, 84, 82, 79, 75, 69, 45, 55, 128, 83, 84, 82, 79,
-    75, 69, 45, 54, 128, 83, 84, 82, 79, 75, 69, 45, 53, 128, 83, 84, 82, 79,
-    75, 69, 45, 52, 128, 83, 84, 82, 79, 75, 69, 45, 51, 128, 83, 84, 82, 79,
-    75, 69, 45, 50, 128, 83, 84, 82, 79, 75, 69, 45, 49, 49, 128, 83, 84, 82,
-    79, 75, 69, 45, 49, 48, 128, 83, 84, 82, 79, 75, 69, 45, 49, 128, 83, 84,
-    82, 79, 75, 197, 83, 84, 82, 73, 80, 69, 128, 83, 84, 82, 73, 78, 71,
-    128, 83, 84, 82, 73, 78, 199, 83, 84, 82, 73, 75, 69, 84, 72, 82, 79, 85,
-    71, 72, 128, 83, 84, 82, 73, 75, 197, 83, 84, 82, 73, 68, 69, 128, 83,
-    84, 82, 73, 67, 84, 76, 217, 83, 84, 82, 69, 84, 67, 72, 69, 196, 83, 84,
-    82, 69, 84, 67, 72, 128, 83, 84, 82, 69, 83, 211, 83, 84, 82, 69, 78, 71,
-    84, 72, 128, 83, 84, 82, 69, 76, 193, 83, 84, 82, 69, 65, 77, 69, 82,
-    128, 83, 84, 82, 65, 87, 66, 69, 82, 82, 89, 128, 83, 84, 82, 65, 87,
-    128, 83, 84, 82, 65, 84, 85, 77, 45, 50, 128, 83, 84, 82, 65, 84, 85, 77,
-    128, 83, 84, 82, 65, 84, 85, 205, 83, 84, 82, 65, 84, 73, 65, 206, 83,
-    84, 82, 65, 78, 78, 79, 128, 83, 84, 82, 65, 78, 78, 207, 83, 84, 82, 65,
-    73, 78, 69, 82, 128, 83, 84, 82, 65, 73, 71, 72, 84, 78, 69, 83, 83, 128,
-    83, 84, 82, 65, 73, 71, 72, 84, 128, 83, 84, 82, 65, 73, 71, 72, 212, 83,
-    84, 82, 65, 73, 70, 128, 83, 84, 82, 65, 71, 71, 73, 83, 77, 65, 84, 65,
-    128, 83, 84, 79, 86, 69, 128, 83, 84, 79, 82, 69, 128, 83, 84, 79, 80,
-    87, 65, 84, 67, 72, 128, 83, 84, 79, 80, 80, 73, 78, 71, 128, 83, 84, 79,
-    80, 80, 65, 71, 69, 128, 83, 84, 79, 80, 73, 84, 83, 65, 128, 83, 84, 79,
-    80, 73, 84, 83, 193, 83, 84, 79, 80, 128, 83, 84, 79, 208, 83, 84, 79,
-    78, 69, 128, 83, 84, 79, 67, 75, 128, 83, 84, 79, 67, 203, 83, 84, 73,
-    82, 82, 85, 208, 83, 84, 73, 77, 77, 69, 128, 83, 84, 73, 76, 204, 83,
-    84, 73, 76, 197, 83, 84, 73, 71, 77, 65, 128, 83, 84, 73, 67, 75, 73, 78,
-    199, 83, 84, 73, 67, 203, 83, 84, 69, 84, 72, 79, 83, 67, 79, 80, 69,
-    128, 83, 84, 69, 82, 69, 79, 128, 83, 84, 69, 80, 128, 83, 84, 69, 78,
-    79, 71, 82, 65, 80, 72, 73, 195, 83, 84, 69, 77, 128, 83, 84, 69, 65, 77,
-    217, 83, 84, 69, 65, 77, 73, 78, 199, 83, 84, 69, 65, 77, 128, 83, 84,
-    69, 65, 205, 83, 84, 65, 86, 82, 79, 85, 128, 83, 84, 65, 86, 82, 79, 83,
-    128, 83, 84, 65, 86, 82, 79, 211, 83, 84, 65, 85, 82, 79, 83, 128, 83,
-    84, 65, 84, 89, 65, 128, 83, 84, 65, 84, 89, 193, 83, 84, 65, 84, 85,
-    197, 83, 84, 65, 84, 73, 79, 78, 128, 83, 84, 65, 84, 69, 82, 83, 128,
-    83, 84, 65, 84, 69, 128, 83, 84, 65, 82, 84, 73, 78, 199, 83, 84, 65, 82,
-    84, 128, 83, 84, 65, 82, 212, 83, 84, 65, 82, 83, 128, 83, 84, 65, 82,
-    82, 69, 196, 83, 84, 65, 82, 75, 128, 83, 84, 65, 82, 128, 83, 84, 65,
-    210, 83, 84, 65, 78, 68, 83, 84, 73, 76, 76, 128, 83, 84, 65, 78, 68, 73,
-    78, 199, 83, 84, 65, 78, 68, 65, 82, 196, 83, 84, 65, 78, 68, 128, 83,
-    84, 65, 78, 128, 83, 84, 65, 77, 80, 69, 196, 83, 84, 65, 76, 76, 73, 79,
-    78, 128, 83, 84, 65, 70, 70, 128, 83, 84, 65, 70, 198, 83, 84, 65, 68,
-    73, 85, 77, 128, 83, 84, 65, 67, 75, 69, 196, 83, 84, 65, 67, 67, 65, 84,
-    79, 128, 83, 84, 65, 67, 67, 65, 84, 73, 83, 83, 73, 77, 79, 128, 83, 84,
-    50, 128, 83, 83, 89, 88, 128, 83, 83, 89, 84, 128, 83, 83, 89, 82, 88,
-    128, 83, 83, 89, 82, 128, 83, 83, 89, 80, 128, 83, 83, 89, 128, 83, 83,
-    85, 88, 128, 83, 83, 85, 85, 128, 83, 83, 85, 84, 128, 83, 83, 85, 80,
-    128, 83, 83, 79, 88, 128, 83, 83, 79, 84, 128, 83, 83, 79, 80, 128, 83,
-    83, 79, 79, 128, 83, 83, 79, 128, 83, 83, 73, 88, 128, 83, 83, 73, 84,
-    128, 83, 83, 73, 80, 128, 83, 83, 73, 73, 128, 83, 83, 73, 69, 88, 128,
-    83, 83, 73, 69, 80, 128, 83, 83, 73, 69, 128, 83, 83, 72, 73, 78, 128,
-    83, 83, 72, 69, 128, 83, 83, 69, 88, 128, 83, 83, 69, 80, 128, 83, 83,
-    69, 69, 128, 83, 83, 65, 88, 128, 83, 83, 65, 85, 128, 83, 83, 65, 84,
-    128, 83, 83, 65, 80, 128, 83, 83, 65, 78, 71, 89, 69, 83, 73, 69, 85, 78,
-    71, 128, 83, 83, 65, 78, 71, 89, 69, 79, 82, 73, 78, 72, 73, 69, 85, 72,
-    128, 83, 83, 65, 78, 71, 84, 73, 75, 69, 85, 84, 45, 80, 73, 69, 85, 80,
-    128, 83, 83, 65, 78, 71, 84, 73, 75, 69, 85, 84, 128, 83, 83, 65, 78, 71,
-    84, 72, 73, 69, 85, 84, 72, 128, 83, 83, 65, 78, 71, 83, 73, 79, 83, 45,
-    84, 73, 75, 69, 85, 84, 128, 83, 83, 65, 78, 71, 83, 73, 79, 83, 45, 80,
-    73, 69, 85, 80, 128, 83, 83, 65, 78, 71, 83, 73, 79, 83, 45, 75, 73, 89,
-    69, 79, 75, 128, 83, 83, 65, 78, 71, 83, 73, 79, 83, 128, 83, 83, 65, 78,
-    71, 82, 73, 69, 85, 76, 45, 75, 72, 73, 69, 85, 75, 72, 128, 83, 83, 65,
-    78, 71, 82, 73, 69, 85, 76, 128, 83, 83, 65, 78, 71, 80, 73, 69, 85, 80,
-    128, 83, 83, 65, 78, 71, 78, 73, 69, 85, 78, 128, 83, 83, 65, 78, 71, 77,
-    73, 69, 85, 77, 128, 83, 83, 65, 78, 71, 73, 69, 85, 78, 71, 128, 83, 83,
-    65, 78, 71, 72, 73, 69, 85, 72, 128, 83, 83, 65, 78, 71, 67, 73, 69, 85,
-    67, 45, 72, 73, 69, 85, 72, 128, 83, 83, 65, 78, 71, 67, 73, 69, 85, 67,
-    128, 83, 83, 65, 78, 71, 65, 82, 65, 69, 65, 128, 83, 83, 65, 73, 128,
-    83, 83, 65, 65, 128, 83, 83, 51, 128, 83, 83, 50, 128, 83, 82, 69, 68,
-    78, 197, 83, 82, 128, 83, 81, 85, 73, 83, 200, 83, 81, 85, 73, 82, 82,
-    69, 204, 83, 81, 85, 73, 71, 71, 76, 197, 83, 81, 85, 73, 68, 128, 83,
-    81, 85, 69, 69, 90, 69, 68, 128, 83, 81, 85, 69, 69, 90, 197, 83, 81, 85,
-    65, 212, 83, 81, 85, 65, 82, 69, 83, 128, 83, 81, 85, 65, 82, 69, 68,
-    128, 83, 81, 85, 65, 82, 69, 128, 83, 80, 89, 128, 83, 80, 87, 65, 128,
-    83, 80, 85, 78, 71, 211, 83, 80, 82, 79, 85, 84, 128, 83, 80, 82, 73, 78,
-    71, 83, 128, 83, 80, 82, 73, 78, 71, 128, 83, 80, 82, 69, 67, 72, 71, 69,
-    83, 65, 78, 199, 83, 80, 82, 69, 65, 68, 128, 83, 80, 82, 69, 65, 196,
-    83, 80, 79, 85, 84, 73, 78, 199, 83, 80, 79, 84, 128, 83, 80, 79, 82, 84,
-    211, 83, 80, 79, 79, 78, 128, 83, 80, 79, 79, 204, 83, 80, 79, 78, 71,
-    69, 128, 83, 80, 79, 128, 83, 80, 76, 73, 84, 84, 73, 78, 199, 83, 80,
-    76, 73, 84, 128, 83, 80, 76, 73, 212, 83, 80, 76, 65, 89, 69, 68, 128,
-    83, 80, 76, 65, 83, 72, 73, 78, 199, 83, 80, 73, 82, 73, 84, 85, 211, 83,
-    80, 73, 82, 73, 84, 128, 83, 80, 73, 82, 73, 212, 83, 80, 73, 82, 65, 78,
-    84, 128, 83, 80, 73, 82, 65, 76, 128, 83, 80, 73, 82, 65, 204, 83, 80,
-    73, 78, 69, 128, 83, 80, 73, 68, 69, 82, 217, 83, 80, 73, 68, 69, 82,
-    128, 83, 80, 73, 68, 69, 210, 83, 80, 73, 67, 69, 128, 83, 80, 73, 128,
-    83, 80, 72, 69, 82, 73, 67, 65, 204, 83, 80, 69, 83, 77, 73, 76, 207, 83,
-    80, 69, 78, 212, 83, 80, 69, 69, 68, 66, 79, 65, 84, 128, 83, 80, 69, 69,
-    67, 72, 128, 83, 80, 69, 69, 67, 200, 83, 80, 69, 67, 73, 65, 76, 128,
-    83, 80, 69, 65, 82, 128, 83, 80, 69, 65, 75, 73, 78, 199, 83, 80, 69, 65,
-    75, 69, 82, 128, 83, 80, 69, 65, 75, 69, 210, 83, 80, 69, 65, 75, 45, 78,
-    79, 45, 69, 86, 73, 204, 83, 80, 69, 128, 83, 80, 65, 84, 72, 73, 128,
-    83, 80, 65, 82, 75, 76, 73, 78, 199, 83, 80, 65, 82, 75, 76, 69, 83, 128,
-    83, 80, 65, 82, 75, 76, 69, 82, 128, 83, 80, 65, 82, 75, 76, 69, 128, 83,
-    80, 65, 71, 72, 69, 84, 84, 73, 128, 83, 80, 65, 68, 69, 83, 128, 83, 80,
-    65, 68, 197, 83, 80, 65, 67, 73, 78, 199, 83, 80, 65, 67, 197, 83, 80,
-    65, 128, 83, 79, 89, 79, 77, 66, 207, 83, 79, 89, 128, 83, 79, 87, 73,
-    76, 207, 83, 79, 87, 128, 83, 79, 85, 84, 72, 69, 82, 206, 83, 79, 85,
-    84, 72, 45, 83, 76, 65, 86, 69, 217, 83, 79, 85, 84, 200, 83, 79, 85, 82,
-    67, 69, 128, 83, 79, 85, 78, 68, 128, 83, 79, 85, 78, 196, 83, 79, 85,
-    78, 65, 80, 128, 83, 79, 85, 128, 83, 79, 83, 128, 83, 79, 82, 79, 67,
-    72, 89, 193, 83, 79, 82, 73, 128, 83, 79, 82, 193, 83, 79, 81, 128, 83,
-    79, 79, 206, 83, 79, 78, 74, 65, 77, 128, 83, 79, 78, 71, 128, 83, 79,
-    78, 128, 83, 79, 77, 80, 69, 78, 199, 83, 79, 77, 128, 83, 79, 205, 83,
-    79, 76, 73, 68, 85, 83, 128, 83, 79, 76, 73, 68, 85, 211, 83, 79, 76, 73,
-    196, 83, 79, 76, 68, 73, 69, 82, 128, 83, 79, 72, 128, 83, 79, 71, 68,
-    73, 65, 206, 83, 79, 70, 84, 87, 65, 82, 69, 45, 70, 85, 78, 67, 84, 73,
-    79, 206, 83, 79, 70, 84, 78, 69, 83, 83, 128, 83, 79, 70, 84, 66, 65, 76,
-    76, 128, 83, 79, 70, 212, 83, 79, 198, 83, 79, 67, 75, 83, 128, 83, 79,
-    67, 73, 69, 84, 89, 128, 83, 79, 67, 67, 69, 210, 83, 79, 65, 80, 128,
-    83, 79, 65, 128, 83, 79, 45, 55, 128, 83, 79, 45, 54, 128, 83, 79, 45,
-    53, 128, 83, 79, 45, 52, 128, 83, 79, 45, 51, 128, 83, 79, 45, 50, 128,
-    83, 79, 45, 49, 128, 83, 207, 83, 78, 79, 87, 77, 65, 78, 128, 83, 78,
-    79, 87, 77, 65, 206, 83, 78, 79, 87, 70, 76, 65, 75, 69, 128, 83, 78, 79,
-    87, 66, 79, 65, 82, 68, 69, 82, 128, 83, 78, 79, 87, 128, 83, 78, 79,
-    215, 83, 78, 79, 85, 84, 128, 83, 78, 79, 85, 212, 83, 78, 69, 69, 90,
-    73, 78, 199, 83, 78, 65, 208, 83, 78, 65, 75, 69, 128, 83, 78, 65, 75,
-    197, 83, 78, 65, 73, 76, 128, 83, 78, 193, 83, 77, 79, 75, 73, 78, 199,
-    83, 77, 73, 82, 75, 73, 78, 199, 83, 77, 73, 76, 73, 78, 199, 83, 77, 73,
-    76, 69, 128, 83, 77, 73, 76, 197, 83, 77, 69, 65, 82, 128, 83, 77, 65,
-    83, 200, 83, 77, 65, 76, 76, 69, 210, 83, 77, 65, 76, 76, 128, 83, 76,
-    85, 82, 128, 83, 76, 79, 90, 72, 73, 84, 73, 69, 128, 83, 76, 79, 90, 72,
-    73, 84, 73, 197, 83, 76, 79, 87, 76, 89, 128, 83, 76, 79, 87, 128, 83,
-    76, 79, 215, 83, 76, 79, 86, 79, 128, 83, 76, 79, 84, 72, 128, 83, 76,
-    79, 212, 83, 76, 79, 80, 73, 78, 199, 83, 76, 79, 80, 69, 128, 83, 76,
-    79, 65, 206, 83, 76, 73, 78, 71, 128, 83, 76, 73, 71, 72, 84, 76, 217,
-    83, 76, 73, 68, 73, 78, 71, 128, 83, 76, 73, 68, 69, 82, 128, 83, 76, 73,
-    68, 69, 128, 83, 76, 73, 67, 69, 128, 83, 76, 73, 67, 197, 83, 76, 69,
-    85, 84, 200, 83, 76, 69, 69, 80, 217, 83, 76, 69, 69, 80, 73, 78, 199,
-    83, 76, 69, 69, 208, 83, 76, 69, 68, 128, 83, 76, 65, 86, 79, 78, 73,
-    195, 83, 76, 65, 86, 69, 128, 83, 76, 65, 83, 72, 128, 83, 76, 65, 83,
-    200, 83, 76, 65, 78, 84, 69, 196, 83, 75, 87, 65, 128, 83, 75, 87, 128,
-    83, 75, 85, 78, 75, 128, 83, 75, 85, 76, 76, 128, 83, 75, 85, 76, 204,
-    83, 75, 79, 66, 65, 128, 83, 75, 76, 73, 82, 79, 206, 83, 75, 73, 78,
-    128, 83, 75, 73, 69, 82, 128, 83, 75, 201, 83, 75, 69, 87, 69, 196, 83,
-    75, 65, 84, 69, 66, 79, 65, 82, 68, 128, 83, 75, 65, 84, 69, 128, 83, 75,
-    65, 77, 69, 89, 84, 83, 193, 83, 75, 128, 83, 74, 69, 128, 83, 73, 90,
-    197, 83, 73, 88, 84, 89, 45, 70, 79, 85, 82, 84, 72, 83, 128, 83, 73, 88,
-    84, 89, 45, 70, 79, 85, 82, 84, 72, 128, 83, 73, 88, 84, 89, 45, 70, 79,
-    85, 82, 84, 200, 83, 73, 88, 84, 89, 128, 83, 73, 88, 84, 217, 83, 73,
-    88, 84, 72, 83, 128, 83, 73, 88, 84, 72, 211, 83, 73, 88, 84, 72, 128,
-    83, 73, 88, 84, 69, 69, 78, 84, 72, 83, 128, 83, 73, 88, 84, 69, 69, 78,
-    84, 72, 45, 50, 128, 83, 73, 88, 84, 69, 69, 78, 84, 72, 45, 49, 128, 83,
-    73, 88, 84, 69, 69, 78, 84, 72, 128, 83, 73, 88, 84, 69, 69, 78, 84, 200,
-    83, 73, 88, 84, 69, 69, 78, 128, 83, 73, 88, 84, 69, 69, 206, 83, 73, 88,
-    45, 84, 72, 73, 82, 84, 89, 128, 83, 73, 88, 45, 83, 84, 82, 73, 78, 199,
-    83, 73, 88, 45, 80, 69, 82, 45, 69, 205, 83, 73, 88, 45, 76, 73, 78, 197,
-    83, 73, 216, 83, 73, 84, 69, 128, 83, 73, 83, 65, 128, 83, 73, 82, 82,
-    65, 72, 128, 83, 73, 82, 73, 78, 71, 85, 128, 83, 73, 79, 83, 45, 84, 72,
-    73, 69, 85, 84, 72, 128, 83, 73, 79, 83, 45, 83, 83, 65, 78, 71, 83, 73,
-    79, 83, 128, 83, 73, 79, 83, 45, 82, 73, 69, 85, 76, 128, 83, 73, 79, 83,
-    45, 80, 73, 69, 85, 80, 45, 75, 73, 89, 69, 79, 75, 128, 83, 73, 79, 83,
-    45, 80, 72, 73, 69, 85, 80, 72, 128, 83, 73, 79, 83, 45, 80, 65, 78, 83,
-    73, 79, 83, 128, 83, 73, 79, 83, 45, 78, 73, 69, 85, 78, 128, 83, 73, 79,
-    83, 45, 77, 73, 69, 85, 77, 128, 83, 73, 79, 83, 45, 75, 72, 73, 69, 85,
-    75, 72, 128, 83, 73, 79, 83, 45, 75, 65, 80, 89, 69, 79, 85, 78, 80, 73,
-    69, 85, 80, 128, 83, 73, 79, 83, 45, 73, 69, 85, 78, 71, 128, 83, 73, 79,
-    83, 45, 72, 73, 69, 85, 72, 128, 83, 73, 79, 83, 45, 67, 73, 69, 85, 67,
-    128, 83, 73, 79, 83, 45, 67, 72, 73, 69, 85, 67, 72, 128, 83, 73, 79,
-    211, 83, 73, 78, 85, 83, 79, 73, 196, 83, 73, 78, 79, 76, 79, 71, 73, 67,
-    65, 204, 83, 73, 78, 78, 89, 73, 73, 89, 72, 69, 128, 83, 73, 78, 75, 73,
-    78, 71, 128, 83, 73, 78, 71, 76, 69, 45, 83, 72, 73, 70, 84, 45, 51, 128,
-    83, 73, 78, 71, 76, 69, 45, 83, 72, 73, 70, 84, 45, 50, 128, 83, 73, 78,
-    71, 76, 69, 45, 76, 73, 78, 197, 83, 73, 78, 71, 76, 69, 128, 83, 73, 78,
-    71, 76, 197, 83, 73, 78, 71, 65, 65, 84, 128, 83, 73, 78, 197, 83, 73,
-    78, 68, 72, 201, 83, 73, 78, 128, 83, 73, 206, 83, 73, 77, 85, 76, 84,
-    65, 78, 69, 79, 85, 83, 128, 83, 73, 77, 85, 76, 84, 65, 78, 69, 79, 85,
-    211, 83, 73, 77, 80, 76, 73, 70, 73, 69, 196, 83, 73, 77, 73, 76, 65, 82,
-    128, 83, 73, 77, 73, 76, 65, 210, 83, 73, 77, 65, 78, 83, 73, 211, 83,
-    73, 77, 65, 76, 85, 78, 71, 85, 206, 83, 73, 77, 65, 128, 83, 73, 76, 86,
-    69, 82, 128, 83, 73, 76, 75, 128, 83, 73, 76, 73, 81, 85, 193, 83, 73,
-    76, 72, 79, 85, 69, 84, 84, 69, 128, 83, 73, 76, 72, 79, 85, 69, 84, 84,
-    197, 83, 73, 76, 65, 51, 128, 83, 73, 75, 73, 128, 83, 73, 75, 50, 128,
-    83, 73, 75, 178, 83, 73, 71, 78, 83, 128, 83, 73, 71, 77, 79, 73, 196,
-    83, 73, 71, 77, 65, 128, 83, 73, 71, 77, 193, 83, 73, 71, 69, 204, 83,
-    73, 71, 52, 128, 83, 73, 71, 180, 83, 73, 71, 128, 83, 73, 69, 69, 128,
-    83, 73, 68, 69, 87, 65, 89, 211, 83, 73, 68, 69, 128, 83, 73, 68, 197,
-    83, 73, 68, 68, 72, 73, 128, 83, 73, 68, 68, 72, 65, 77, 128, 83, 73, 68,
-    68, 72, 65, 205, 83, 73, 67, 75, 78, 69, 83, 83, 128, 83, 73, 67, 75, 76,
-    69, 128, 83, 73, 66, 197, 83, 73, 65, 128, 83, 73, 45, 54, 128, 83, 73,
-    45, 53, 128, 83, 73, 45, 52, 128, 83, 73, 45, 51, 128, 83, 73, 45, 50,
-    128, 83, 73, 45, 49, 128, 83, 201, 83, 72, 89, 88, 128, 83, 72, 89, 84,
-    128, 83, 72, 89, 82, 88, 128, 83, 72, 89, 82, 128, 83, 72, 89, 80, 128,
-    83, 72, 89, 69, 128, 83, 72, 89, 65, 128, 83, 72, 89, 128, 83, 72, 87,
-    79, 89, 128, 83, 72, 87, 79, 79, 128, 83, 72, 87, 79, 128, 83, 72, 87,
-    73, 73, 128, 83, 72, 87, 73, 128, 83, 72, 87, 69, 128, 83, 72, 87, 197,
-    83, 72, 87, 65, 65, 128, 83, 72, 87, 65, 128, 83, 72, 86, 128, 83, 72,
-    85, 88, 128, 83, 72, 85, 85, 128, 83, 72, 85, 84, 84, 76, 69, 67, 79, 67,
-    75, 128, 83, 72, 85, 84, 128, 83, 72, 85, 82, 88, 128, 83, 72, 85, 82,
-    128, 83, 72, 85, 80, 128, 83, 72, 85, 79, 88, 128, 83, 72, 85, 79, 80,
-    128, 83, 72, 85, 79, 128, 83, 72, 85, 77, 128, 83, 72, 85, 76, 128, 83,
-    72, 85, 70, 70, 76, 197, 83, 72, 85, 69, 81, 128, 83, 72, 85, 69, 78, 83,
-    72, 85, 69, 84, 128, 83, 72, 85, 66, 85, 82, 128, 83, 72, 85, 65, 78, 71,
-    88, 73, 128, 83, 72, 85, 50, 128, 83, 72, 85, 178, 83, 72, 85, 128, 83,
-    72, 84, 65, 80, 73, 67, 128, 83, 72, 84, 65, 128, 83, 72, 82, 85, 71,
-    128, 83, 72, 82, 79, 79, 128, 83, 72, 82, 79, 128, 83, 72, 82, 73, 78,
-    69, 128, 83, 72, 82, 73, 77, 80, 128, 83, 72, 82, 73, 73, 128, 83, 72,
-    82, 73, 128, 83, 72, 82, 65, 65, 128, 83, 72, 82, 65, 128, 83, 72, 79,
-    89, 128, 83, 72, 79, 88, 128, 83, 72, 79, 87, 69, 82, 128, 83, 72, 79,
-    85, 76, 68, 69, 82, 69, 196, 83, 72, 79, 85, 76, 68, 69, 210, 83, 72, 79,
-    85, 128, 83, 72, 79, 84, 128, 83, 72, 79, 82, 84, 83, 128, 83, 72, 79,
-    82, 84, 211, 83, 72, 79, 82, 84, 72, 65, 78, 196, 83, 72, 79, 82, 84, 69,
-    78, 69, 82, 128, 83, 72, 79, 82, 84, 67, 65, 75, 69, 128, 83, 72, 79, 82,
-    84, 45, 84, 87, 73, 71, 45, 89, 82, 128, 83, 72, 79, 82, 84, 45, 84, 87,
-    73, 71, 45, 84, 89, 210, 83, 72, 79, 82, 84, 45, 84, 87, 73, 71, 45, 83,
-    79, 204, 83, 72, 79, 82, 84, 45, 84, 87, 73, 71, 45, 79, 83, 211, 83, 72,
-    79, 82, 84, 45, 84, 87, 73, 71, 45, 78, 65, 85, 196, 83, 72, 79, 82, 84,
-    45, 84, 87, 73, 71, 45, 77, 65, 68, 210, 83, 72, 79, 82, 84, 45, 84, 87,
-    73, 71, 45, 72, 65, 71, 65, 76, 204, 83, 72, 79, 82, 84, 45, 84, 87, 73,
-    71, 45, 66, 74, 65, 82, 75, 65, 206, 83, 72, 79, 82, 84, 45, 84, 87, 73,
-    71, 45, 65, 210, 83, 72, 79, 82, 84, 128, 83, 72, 79, 82, 212, 83, 72,
-    79, 81, 128, 83, 72, 79, 209, 83, 72, 79, 80, 80, 73, 78, 199, 83, 72,
-    79, 80, 128, 83, 72, 79, 79, 84, 73, 78, 199, 83, 72, 79, 79, 84, 128,
-    83, 72, 79, 79, 73, 128, 83, 72, 79, 79, 128, 83, 72, 79, 71, 201, 83,
-    72, 79, 199, 83, 72, 79, 69, 83, 128, 83, 72, 79, 69, 128, 83, 72, 79,
-    197, 83, 72, 79, 67, 75, 69, 196, 83, 72, 79, 65, 128, 83, 72, 79, 128,
-    83, 72, 73, 89, 89, 65, 65, 76, 65, 65, 128, 83, 72, 73, 84, 65, 128, 83,
-    72, 73, 84, 193, 83, 72, 73, 82, 212, 83, 72, 73, 82, 65, 69, 128, 83,
-    72, 73, 82, 128, 83, 72, 73, 210, 83, 72, 73, 81, 128, 83, 72, 73, 78,
-    84, 207, 83, 72, 73, 78, 73, 71, 128, 83, 72, 73, 78, 68, 193, 83, 72,
-    73, 206, 83, 72, 73, 77, 65, 128, 83, 72, 73, 77, 193, 83, 72, 73, 77,
-    128, 83, 72, 73, 205, 83, 72, 73, 73, 78, 128, 83, 72, 73, 73, 128, 83,
-    72, 73, 70, 212, 83, 72, 73, 69, 76, 68, 128, 83, 72, 73, 68, 128, 83,
-    72, 73, 196, 83, 72, 72, 65, 128, 83, 72, 72, 193, 83, 72, 69, 88, 128,
-    83, 72, 69, 86, 65, 128, 83, 72, 69, 85, 88, 128, 83, 72, 69, 85, 79, 81,
-    128, 83, 72, 69, 85, 65, 69, 81, 84, 85, 128, 83, 72, 69, 85, 65, 69, 81,
-    128, 83, 72, 69, 85, 65, 69, 128, 83, 72, 69, 84, 128, 83, 72, 69, 212,
-    83, 72, 69, 83, 72, 76, 65, 77, 128, 83, 72, 69, 83, 72, 73, 71, 128, 83,
-    72, 69, 83, 72, 73, 199, 83, 72, 69, 83, 72, 50, 128, 83, 72, 69, 83, 72,
-    128, 83, 72, 69, 83, 200, 83, 72, 69, 81, 69, 204, 83, 72, 69, 80, 128,
-    83, 72, 69, 78, 128, 83, 72, 69, 76, 76, 128, 83, 72, 69, 76, 204, 83,
-    72, 69, 76, 70, 128, 83, 72, 69, 73, 128, 83, 72, 69, 71, 57, 128, 83,
-    72, 69, 69, 80, 128, 83, 72, 69, 69, 78, 85, 128, 83, 72, 69, 69, 78,
-    128, 83, 72, 69, 69, 206, 83, 72, 69, 69, 128, 83, 72, 69, 45, 71, 79,
-    65, 84, 128, 83, 72, 197, 83, 72, 67, 72, 79, 79, 73, 128, 83, 72, 67,
-    72, 65, 128, 83, 72, 65, 89, 128, 83, 72, 65, 88, 128, 83, 72, 65, 86,
-    73, 89, 65, 78, 73, 128, 83, 72, 65, 86, 73, 65, 206, 83, 72, 65, 86, 69,
-    196, 83, 72, 65, 85, 128, 83, 72, 65, 84, 128, 83, 72, 65, 82, 85, 128,
-    83, 72, 65, 82, 213, 83, 72, 65, 82, 80, 128, 83, 72, 65, 82, 208, 83,
-    72, 65, 82, 75, 128, 83, 72, 65, 82, 65, 68, 193, 83, 72, 65, 82, 65,
-    128, 83, 72, 65, 82, 50, 128, 83, 72, 65, 82, 178, 83, 72, 65, 80, 73,
-    78, 71, 128, 83, 72, 65, 80, 69, 83, 128, 83, 72, 65, 80, 197, 83, 72,
-    65, 80, 128, 83, 72, 65, 78, 71, 128, 83, 72, 65, 78, 128, 83, 72, 65,
-    206, 83, 72, 65, 77, 82, 79, 67, 75, 128, 83, 72, 65, 76, 83, 72, 69, 76,
-    69, 84, 128, 83, 72, 65, 76, 76, 79, 215, 83, 72, 65, 75, 84, 73, 128,
-    83, 72, 65, 75, 73, 78, 71, 128, 83, 72, 65, 75, 73, 78, 199, 83, 72, 65,
-    75, 69, 82, 128, 83, 72, 65, 75, 128, 83, 72, 65, 73, 128, 83, 72, 65,
-    70, 84, 128, 83, 72, 65, 70, 212, 83, 72, 65, 68, 79, 87, 69, 196, 83,
-    72, 65, 68, 69, 196, 83, 72, 65, 68, 69, 128, 83, 72, 65, 68, 197, 83,
-    72, 65, 68, 68, 65, 128, 83, 72, 65, 68, 68, 193, 83, 72, 65, 68, 128,
-    83, 72, 65, 196, 83, 72, 65, 66, 54, 128, 83, 72, 65, 65, 128, 83, 72,
-    65, 54, 128, 83, 72, 65, 182, 83, 72, 65, 51, 128, 83, 72, 65, 179, 83,
-    71, 82, 193, 83, 71, 79, 210, 83, 71, 67, 128, 83, 71, 65, 215, 83, 71,
-    65, 194, 83, 71, 128, 83, 69, 89, 75, 128, 83, 69, 88, 84, 85, 76, 193,
-    83, 69, 88, 84, 73, 76, 69, 128, 83, 69, 88, 84, 65, 78, 84, 45, 54, 128,
-    83, 69, 88, 84, 65, 78, 84, 45, 53, 54, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 53, 128, 83, 69, 88, 84, 65, 78, 84, 45, 52, 54, 128, 83, 69, 88, 84,
-    65, 78, 84, 45, 52, 53, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 52, 53,
-    128, 83, 69, 88, 84, 65, 78, 84, 45, 52, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 51, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 51, 53, 54, 128, 83, 69,
-    88, 84, 65, 78, 84, 45, 51, 53, 128, 83, 69, 88, 84, 65, 78, 84, 45, 51,
-    52, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 51, 52, 53, 54, 128, 83, 69,
-    88, 84, 65, 78, 84, 45, 51, 52, 53, 128, 83, 69, 88, 84, 65, 78, 84, 45,
-    51, 52, 128, 83, 69, 88, 84, 65, 78, 84, 45, 51, 128, 83, 69, 88, 84, 65,
-    78, 84, 45, 50, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 50, 53, 54, 128,
-    83, 69, 88, 84, 65, 78, 84, 45, 50, 53, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 50, 52, 53, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 50, 52, 53, 128,
-    83, 69, 88, 84, 65, 78, 84, 45, 50, 52, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 50, 51, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 50, 51, 53, 54, 128,
-    83, 69, 88, 84, 65, 78, 84, 45, 50, 51, 53, 128, 83, 69, 88, 84, 65, 78,
-    84, 45, 50, 51, 52, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 50, 51, 52,
-    53, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 50, 51, 52, 53, 128, 83, 69,
-    88, 84, 65, 78, 84, 45, 50, 51, 52, 128, 83, 69, 88, 84, 65, 78, 84, 45,
-    50, 51, 128, 83, 69, 88, 84, 65, 78, 84, 45, 50, 128, 83, 69, 88, 84, 65,
-    78, 84, 45, 49, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 53, 54, 128,
-    83, 69, 88, 84, 65, 78, 84, 45, 49, 53, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 49, 52, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 52, 53, 54, 128,
-    83, 69, 88, 84, 65, 78, 84, 45, 49, 52, 53, 128, 83, 69, 88, 84, 65, 78,
-    84, 45, 49, 52, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 51, 54, 128, 83,
-    69, 88, 84, 65, 78, 84, 45, 49, 51, 53, 54, 128, 83, 69, 88, 84, 65, 78,
-    84, 45, 49, 51, 52, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 51, 52,
-    53, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 51, 52, 53, 128, 83, 69,
-    88, 84, 65, 78, 84, 45, 49, 51, 52, 128, 83, 69, 88, 84, 65, 78, 84, 45,
-    49, 51, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50, 54, 128, 83, 69, 88,
-    84, 65, 78, 84, 45, 49, 50, 53, 54, 128, 83, 69, 88, 84, 65, 78, 84, 45,
-    49, 50, 53, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50, 52, 54, 128, 83,
-    69, 88, 84, 65, 78, 84, 45, 49, 50, 52, 53, 54, 128, 83, 69, 88, 84, 65,
-    78, 84, 45, 49, 50, 52, 53, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50,
-    52, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50, 51, 54, 128, 83, 69, 88,
-    84, 65, 78, 84, 45, 49, 50, 51, 53, 54, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 49, 50, 51, 53, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50, 51, 52,
-    54, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50, 51, 52, 53, 128, 83, 69,
-    88, 84, 65, 78, 84, 45, 49, 50, 51, 52, 128, 83, 69, 88, 84, 65, 78, 84,
-    45, 49, 50, 51, 128, 83, 69, 88, 84, 65, 78, 84, 45, 49, 50, 128, 83, 69,
-    88, 84, 65, 78, 84, 45, 49, 128, 83, 69, 88, 84, 65, 78, 211, 83, 69, 87,
-    73, 78, 199, 83, 69, 86, 69, 82, 65, 78, 67, 69, 128, 83, 69, 86, 69, 78,
-    84, 89, 128, 83, 69, 86, 69, 78, 84, 217, 83, 69, 86, 69, 78, 84, 72,
-    128, 83, 69, 86, 69, 78, 84, 69, 69, 78, 128, 83, 69, 86, 69, 78, 84, 69,
-    69, 206, 83, 69, 86, 69, 78, 45, 84, 72, 73, 82, 84, 89, 128, 83, 69, 86,
-    69, 206, 83, 69, 85, 88, 128, 83, 69, 85, 78, 89, 65, 77, 128, 83, 69,
-    85, 65, 69, 81, 128, 83, 69, 84, 70, 79, 78, 128, 83, 69, 83, 84, 69, 82,
-    84, 73, 85, 211, 83, 69, 83, 81, 85, 73, 81, 85, 65, 68, 82, 65, 84, 69,
-    128, 83, 69, 83, 65, 77, 197, 83, 69, 82, 86, 73, 67, 197, 83, 69, 82,
-    73, 79, 85, 211, 83, 69, 82, 73, 70, 83, 128, 83, 69, 82, 73, 70, 211,
-    83, 69, 82, 73, 70, 128, 83, 69, 81, 85, 69, 78, 84, 73, 65, 76, 128, 83,
-    69, 81, 85, 69, 78, 67, 197, 83, 69, 80, 84, 85, 80, 76, 197, 83, 69, 80,
-    84, 69, 77, 66, 69, 82, 128, 83, 69, 80, 65, 82, 65, 84, 79, 82, 128, 83,
-    69, 80, 65, 82, 65, 84, 79, 210, 83, 69, 80, 65, 82, 65, 84, 69, 196, 83,
-    69, 78, 84, 79, 128, 83, 69, 78, 84, 73, 128, 83, 69, 78, 84, 65, 71, 79,
-    78, 128, 83, 69, 77, 85, 78, 67, 73, 193, 83, 69, 77, 75, 65, 84, 72,
-    128, 83, 69, 77, 75, 128, 83, 69, 77, 73, 86, 79, 87, 69, 204, 83, 69,
-    77, 73, 83, 79, 70, 212, 83, 69, 77, 73, 83, 69, 88, 84, 73, 76, 69, 128,
-    83, 69, 77, 73, 77, 73, 78, 73, 77, 193, 83, 69, 77, 73, 68, 73, 82, 69,
-    67, 212, 83, 69, 77, 73, 67, 79, 76, 79, 78, 128, 83, 69, 77, 73, 67, 79,
-    76, 79, 206, 83, 69, 77, 73, 67, 73, 82, 67, 85, 76, 65, 210, 83, 69, 77,
-    73, 67, 73, 82, 67, 76, 197, 83, 69, 77, 73, 66, 82, 69, 86, 73, 211, 83,
-    69, 77, 73, 45, 86, 79, 73, 67, 69, 196, 83, 69, 76, 70, 73, 69, 128, 83,
-    69, 76, 70, 128, 83, 69, 76, 69, 78, 65, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 57, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 57, 56, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 57, 55, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 57, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 57, 53, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 57, 52, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 57, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 57, 50, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 57, 49, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 57, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 57, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 56, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 56, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 56, 55, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 56, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 56, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 56, 52, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 56, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 56, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 56, 49, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 56, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 55, 57, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 55, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    55, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 55, 54, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 55, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    55, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 55, 51, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 55, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    55, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 55, 48, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54,
-    57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54, 56, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 54, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54,
-    54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54, 53, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 54, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54,
-    51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54, 50, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 54, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54,
-    48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 54, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 53, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 56,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 55, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 53, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 53,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 52, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 53, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 50,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 49, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 53, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 53, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 57, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 52, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 55, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 54, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 52, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 52, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 51, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 52, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 49, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 52, 48, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 51, 57, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 51, 56, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 51, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 51, 54, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 51, 53, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 51, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 51, 51, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 51, 50, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 51, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 51, 48, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 50, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 56, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 50, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 50, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 53, 54, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 50, 53, 53, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 50, 53, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 53,
-    51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 53, 50, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 50, 53, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 50, 53, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 53, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 50, 52, 57, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 50, 52, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 52,
-    55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 52, 54, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 50, 52, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 50, 52, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 52, 51, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 52, 50, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 50, 52, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50,
-    52, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 52, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 50, 51, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 50, 51, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 51, 55, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 51, 54, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 50, 51, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50,
-    51, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 51, 51, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 50, 51, 50, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 50, 51, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 51, 48,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 51, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 50, 50, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50,
-    50, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 50, 55, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 50, 50, 54, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 50, 50, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 50, 52,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 50, 51, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 50, 50, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    50, 50, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 50, 48, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 50, 50, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 50, 49, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 49, 56,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 49, 55, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 50, 49, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    50, 49, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 49, 52, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 50, 49, 51, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 50, 49, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 49,
-    49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 49, 48, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 50, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    50, 48, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 48, 56, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 50, 48, 55, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 50, 48, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 48,
-    53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 48, 52, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 50, 48, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 50, 48, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 48, 49, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 48, 48, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 50, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 50, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 57, 57, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 49, 57, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    57, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 57, 54, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 57, 53, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 49, 57, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 57, 51,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 57, 50, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 57, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    49, 57, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 57, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 56, 57, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 49, 56, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 56, 55,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 56, 54, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 56, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    49, 56, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 56, 51, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 49, 56, 50, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 49, 56, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 56,
-    48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 56, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 55, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    49, 55, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 55, 55, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 49, 55, 54, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 49, 55, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 55,
-    52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 55, 51, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 49, 55, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 49, 55, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 55, 48, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 55, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 49, 54, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 54,
-    56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 54, 55, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 49, 54, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 49, 54, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 54, 52, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 54, 51, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 49, 54, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    54, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 54, 48, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 49, 53, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 53, 56, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 53, 55, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 49, 53, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    53, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 53, 52, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 53, 51, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 49, 53, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 53, 49,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 53, 48, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 53, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    52, 57, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 52, 56, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 52, 55, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 49, 52, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 52, 53,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 52, 52, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 52, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    49, 52, 50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 52, 49, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 49, 52, 48, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 49, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 51, 57,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 51, 56, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 51, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    49, 51, 54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 51, 53, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 49, 51, 52, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 49, 51, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 51,
-    50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 51, 49, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 49, 51, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 49, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 50, 57, 128, 83,
-    69, 76, 69, 67, 84, 79, 82, 45, 49, 50, 56, 128, 83, 69, 76, 69, 67, 84,
-    79, 82, 45, 49, 50, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 50,
-    54, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 50, 53, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 49, 50, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 49, 50, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 50, 50, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 50, 49, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 49, 50, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    50, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 49, 57, 128, 83, 69, 76,
-    69, 67, 84, 79, 82, 45, 49, 49, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82,
-    45, 49, 49, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 49, 54, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 49, 53, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 49, 49, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    49, 51, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 49, 50, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 49, 49, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 49, 49, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 49, 128,
-    83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 48, 57, 128, 83, 69, 76, 69, 67,
-    84, 79, 82, 45, 49, 48, 56, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49,
-    48, 55, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 48, 54, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 48, 53, 128, 83, 69, 76, 69, 67, 84, 79,
-    82, 45, 49, 48, 52, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 48, 51,
-    128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 48, 50, 128, 83, 69, 76, 69,
-    67, 84, 79, 82, 45, 49, 48, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45,
-    49, 48, 48, 128, 83, 69, 76, 69, 67, 84, 79, 82, 45, 49, 48, 128, 83, 69,
-    76, 69, 67, 84, 79, 82, 45, 49, 128, 83, 69, 76, 69, 67, 84, 79, 82, 128,
-    83, 69, 76, 69, 67, 84, 79, 210, 83, 69, 76, 69, 67, 84, 69, 196, 83, 69,
-    73, 83, 77, 65, 128, 83, 69, 73, 83, 77, 193, 83, 69, 72, 128, 83, 69,
-    71, 79, 76, 128, 83, 69, 71, 78, 79, 128, 83, 69, 71, 77, 69, 78, 84, 69,
-    196, 83, 69, 71, 77, 69, 78, 84, 128, 83, 69, 69, 86, 128, 83, 69, 69,
-    78, 85, 128, 83, 69, 69, 78, 128, 83, 69, 69, 206, 83, 69, 69, 68, 76,
-    73, 78, 71, 128, 83, 69, 69, 45, 78, 79, 45, 69, 86, 73, 204, 83, 69, 68,
-    78, 65, 128, 83, 69, 67, 84, 79, 82, 128, 83, 69, 67, 84, 73, 79, 78,
-    128, 83, 69, 67, 84, 73, 79, 206, 83, 69, 67, 82, 69, 84, 128, 83, 69,
-    67, 65, 78, 84, 128, 83, 69, 66, 65, 84, 66, 69, 73, 212, 83, 69, 65, 84,
-    128, 83, 69, 65, 76, 128, 83, 69, 65, 71, 85, 76, 204, 83, 69, 45, 53,
-    128, 83, 69, 45, 52, 128, 83, 69, 45, 51, 128, 83, 68, 79, 78, 199, 83,
-    68, 128, 83, 67, 87, 65, 128, 83, 67, 82, 85, 80, 76, 69, 128, 83, 67,
-    82, 79, 76, 76, 128, 83, 67, 82, 73, 80, 84, 128, 83, 67, 82, 69, 87, 68,
-    82, 73, 86, 69, 82, 128, 83, 67, 82, 69, 69, 78, 128, 83, 67, 82, 69, 69,
-    206, 83, 67, 82, 69, 65, 77, 73, 78, 199, 83, 67, 79, 84, 211, 83, 67,
-    79, 82, 80, 73, 85, 83, 128, 83, 67, 79, 82, 80, 73, 79, 78, 128, 83, 67,
-    79, 82, 69, 128, 83, 67, 79, 79, 84, 69, 82, 128, 83, 67, 73, 83, 83, 79,
-    82, 83, 128, 83, 67, 73, 128, 83, 67, 72, 87, 65, 128, 83, 67, 72, 87,
-    193, 83, 67, 72, 82, 79, 69, 68, 69, 82, 128, 83, 67, 72, 79, 79, 76,
-    128, 83, 67, 72, 79, 79, 204, 83, 67, 72, 79, 76, 65, 82, 128, 83, 67,
-    72, 69, 77, 193, 83, 67, 69, 80, 84, 69, 210, 83, 67, 65, 82, 70, 128,
-    83, 67, 65, 78, 68, 73, 67, 85, 83, 128, 83, 67, 65, 78, 68, 73, 67, 85,
-    211, 83, 67, 65, 206, 83, 67, 65, 76, 69, 83, 128, 83, 66, 85, 194, 83,
-    66, 82, 85, 204, 83, 65, 89, 73, 83, 201, 83, 65, 89, 65, 78, 78, 65,
-    128, 83, 65, 89, 128, 83, 65, 88, 79, 80, 72, 79, 78, 69, 128, 83, 65,
-    88, 73, 77, 65, 84, 65, 128, 83, 65, 87, 65, 78, 128, 83, 65, 87, 128,
-    83, 65, 86, 79, 85, 82, 73, 78, 199, 83, 65, 85, 82, 79, 80, 79, 68, 128,
-    83, 65, 85, 82, 65, 83, 72, 84, 82, 193, 83, 65, 85, 73, 76, 128, 83, 65,
-    85, 67, 69, 82, 128, 83, 65, 84, 85, 82, 78, 128, 83, 65, 84, 75, 65, 65,
-    78, 75, 85, 85, 128, 83, 65, 84, 75, 65, 65, 78, 128, 83, 65, 84, 69, 76,
-    76, 73, 84, 69, 128, 83, 65, 84, 69, 76, 76, 73, 84, 197, 83, 65, 84, 67,
-    72, 69, 76, 128, 83, 65, 84, 65, 78, 71, 65, 128, 83, 65, 83, 72, 128,
-    83, 65, 83, 65, 75, 128, 83, 65, 82, 73, 128, 83, 65, 82, 193, 83, 65,
-    82, 128, 83, 65, 81, 128, 83, 65, 80, 65, 128, 83, 65, 78, 89, 79, 79,
-    71, 193, 83, 65, 78, 89, 65, 75, 193, 83, 65, 78, 84, 73, 73, 77, 85,
-    128, 83, 65, 78, 83, 75, 82, 73, 212, 83, 65, 78, 78, 89, 65, 128, 83,
-    65, 78, 71, 65, 50, 128, 83, 65, 78, 68, 87, 73, 67, 72, 128, 83, 65, 78,
-    68, 72, 201, 83, 65, 78, 68, 65, 76, 128, 83, 65, 78, 65, 72, 128, 83,
-    65, 78, 128, 83, 65, 77, 89, 79, 203, 83, 65, 77, 86, 65, 84, 128, 83,
-    65, 77, 80, 73, 128, 83, 65, 77, 80, 72, 65, 79, 128, 83, 65, 77, 75, 65,
-    128, 83, 65, 77, 69, 75, 72, 128, 83, 65, 77, 69, 75, 200, 83, 65, 77,
-    66, 65, 128, 83, 65, 77, 65, 82, 73, 84, 65, 206, 83, 65, 77, 128, 83,
-    65, 76, 85, 84, 73, 78, 199, 83, 65, 76, 84, 73, 82, 69, 128, 83, 65, 76,
-    84, 73, 82, 197, 83, 65, 76, 84, 73, 76, 76, 79, 128, 83, 65, 76, 84, 45,
-    50, 128, 83, 65, 76, 84, 128, 83, 65, 76, 212, 83, 65, 76, 76, 65, 76,
-    76, 65, 72, 213, 83, 65, 76, 76, 65, 76, 76, 65, 72, 79, 213, 83, 65, 76,
-    76, 65, 76, 76, 65, 65, 72, 213, 83, 65, 76, 76, 193, 83, 65, 76, 65,
-    205, 83, 65, 76, 65, 68, 128, 83, 65, 76, 65, 65, 77, 85, 72, 213, 83,
-    65, 76, 65, 128, 83, 65, 76, 45, 65, 77, 77, 79, 78, 73, 65, 67, 128, 83,
-    65, 76, 128, 83, 65, 75, 84, 65, 128, 83, 65, 75, 79, 84, 128, 83, 65,
-    75, 73, 78, 128, 83, 65, 75, 72, 193, 83, 65, 75, 69, 85, 65, 69, 128,
-    83, 65, 75, 197, 83, 65, 74, 68, 65, 72, 128, 83, 65, 73, 76, 66, 79, 65,
-    84, 128, 83, 65, 73, 76, 128, 83, 65, 73, 75, 85, 82, 85, 128, 83, 65,
-    72, 128, 83, 65, 71, 73, 84, 84, 65, 82, 73, 85, 83, 128, 83, 65, 71, 65,
-    128, 83, 65, 71, 128, 83, 65, 199, 83, 65, 70, 72, 65, 128, 83, 65, 70,
-    69, 84, 217, 83, 65, 68, 72, 69, 128, 83, 65, 68, 72, 197, 83, 65, 68,
-    69, 128, 83, 65, 68, 128, 83, 65, 196, 83, 65, 67, 82, 73, 70, 73, 67,
-    73, 65, 204, 83, 65, 65, 73, 128, 83, 65, 65, 68, 72, 85, 128, 83, 65,
-    45, 73, 128, 83, 65, 45, 56, 128, 83, 65, 45, 55, 128, 83, 65, 45, 54,
-    128, 83, 65, 45, 53, 128, 83, 65, 45, 52, 128, 83, 65, 45, 51, 128, 83,
-    65, 45, 50, 128, 83, 65, 45, 49, 128, 83, 48, 52, 54, 128, 83, 48, 52,
-    53, 128, 83, 48, 52, 52, 128, 83, 48, 52, 51, 128, 83, 48, 52, 50, 128,
-    83, 48, 52, 49, 128, 83, 48, 52, 48, 128, 83, 48, 51, 57, 128, 83, 48,
-    51, 56, 128, 83, 48, 51, 55, 128, 83, 48, 51, 54, 128, 83, 48, 51, 53,
-    65, 128, 83, 48, 51, 53, 128, 83, 48, 51, 52, 128, 83, 48, 51, 51, 128,
-    83, 48, 51, 50, 128, 83, 48, 51, 49, 128, 83, 48, 51, 48, 128, 83, 48,
-    50, 57, 128, 83, 48, 50, 56, 128, 83, 48, 50, 55, 128, 83, 48, 50, 54,
-    66, 128, 83, 48, 50, 54, 65, 128, 83, 48, 50, 54, 128, 83, 48, 50, 53,
-    128, 83, 48, 50, 52, 128, 83, 48, 50, 51, 128, 83, 48, 50, 50, 128, 83,
-    48, 50, 49, 128, 83, 48, 50, 48, 128, 83, 48, 49, 57, 128, 83, 48, 49,
-    56, 128, 83, 48, 49, 55, 65, 128, 83, 48, 49, 55, 128, 83, 48, 49, 54,
-    128, 83, 48, 49, 53, 128, 83, 48, 49, 52, 66, 128, 83, 48, 49, 52, 65,
-    128, 83, 48, 49, 52, 128, 83, 48, 49, 51, 128, 83, 48, 49, 50, 128, 83,
-    48, 49, 49, 128, 83, 48, 49, 48, 128, 83, 48, 48, 57, 128, 83, 48, 48,
-    56, 128, 83, 48, 48, 55, 128, 83, 48, 48, 54, 65, 128, 83, 48, 48, 54,
-    128, 83, 48, 48, 53, 128, 83, 48, 48, 52, 128, 83, 48, 48, 51, 128, 83,
-    48, 48, 50, 65, 128, 83, 48, 48, 50, 128, 83, 48, 48, 49, 128, 83, 45,
-    87, 128, 83, 45, 83, 72, 65, 80, 69, 196, 82, 89, 89, 128, 82, 89, 88,
-    128, 82, 89, 84, 128, 82, 89, 82, 88, 128, 82, 89, 82, 128, 82, 89, 80,
-    128, 82, 87, 79, 79, 128, 82, 87, 79, 128, 82, 87, 73, 73, 128, 82, 87,
-    73, 128, 82, 87, 69, 69, 128, 82, 87, 69, 128, 82, 87, 65, 72, 65, 128,
-    82, 87, 65, 65, 128, 82, 87, 65, 128, 82, 85, 88, 128, 82, 85, 85, 66,
-    85, 82, 85, 128, 82, 85, 85, 128, 82, 85, 84, 128, 82, 85, 83, 83, 73,
-    65, 206, 82, 85, 83, 73, 128, 82, 85, 82, 88, 128, 82, 85, 82, 128, 82,
-    85, 80, 73, 73, 128, 82, 85, 80, 69, 197, 82, 85, 80, 128, 82, 85, 79,
-    88, 128, 82, 85, 79, 80, 128, 82, 85, 79, 128, 82, 85, 78, 79, 85, 84,
-    128, 82, 85, 78, 78, 73, 78, 199, 82, 85, 78, 78, 69, 82, 128, 82, 85,
-    78, 73, 195, 82, 85, 78, 128, 82, 85, 77, 201, 82, 85, 77, 65, 201, 82,
-    85, 77, 128, 82, 85, 205, 82, 85, 76, 69, 82, 128, 82, 85, 76, 69, 45,
-    68, 69, 76, 65, 89, 69, 68, 128, 82, 85, 76, 69, 128, 82, 85, 76, 65, 73,
-    128, 82, 85, 75, 75, 65, 75, 72, 65, 128, 82, 85, 73, 83, 128, 82, 85,
-    71, 66, 217, 82, 85, 68, 73, 77, 69, 78, 84, 193, 82, 85, 66, 76, 197,
-    82, 85, 194, 82, 85, 65, 128, 82, 85, 45, 54, 128, 82, 85, 45, 53, 128,
-    82, 85, 45, 52, 128, 82, 85, 45, 51, 128, 82, 85, 45, 50, 128, 82, 85,
-    45, 49, 128, 82, 84, 72, 65, 78, 199, 82, 84, 69, 128, 82, 84, 65, 71,
-    83, 128, 82, 84, 65, 71, 211, 82, 82, 89, 88, 128, 82, 82, 89, 84, 128,
-    82, 82, 89, 82, 88, 128, 82, 82, 89, 82, 128, 82, 82, 89, 80, 128, 82,
-    82, 85, 88, 128, 82, 82, 85, 85, 128, 82, 82, 85, 84, 128, 82, 82, 85,
-    82, 88, 128, 82, 82, 85, 82, 128, 82, 82, 85, 80, 128, 82, 82, 85, 79,
-    88, 128, 82, 82, 85, 79, 128, 82, 82, 85, 128, 82, 82, 82, 65, 128, 82,
-    82, 79, 88, 128, 82, 82, 79, 84, 128, 82, 82, 79, 80, 128, 82, 82, 79,
-    79, 128, 82, 82, 79, 128, 82, 82, 73, 73, 128, 82, 82, 73, 128, 82, 82,
-    69, 88, 128, 82, 82, 69, 84, 128, 82, 82, 69, 80, 128, 82, 82, 69, 72,
-    128, 82, 82, 69, 200, 82, 82, 69, 69, 128, 82, 82, 69, 128, 82, 82, 65,
-    88, 128, 82, 82, 65, 85, 128, 82, 82, 65, 73, 128, 82, 82, 65, 65, 128,
-    82, 79, 87, 66, 79, 65, 84, 128, 82, 79, 85, 78, 68, 69, 196, 82, 79, 85,
-    78, 68, 45, 84, 73, 80, 80, 69, 196, 82, 79, 84, 85, 78, 68, 65, 128, 82,
-    79, 84, 65, 84, 73, 79, 78, 83, 128, 82, 79, 84, 65, 84, 73, 79, 78, 45,
-    87, 65, 76, 76, 80, 76, 65, 78, 197, 82, 79, 84, 65, 84, 73, 79, 78, 45,
-    70, 76, 79, 79, 82, 80, 76, 65, 78, 197, 82, 79, 84, 65, 84, 73, 79, 78,
-    128, 82, 79, 84, 65, 84, 73, 79, 206, 82, 79, 84, 65, 84, 69, 196, 82,
-    79, 83, 72, 128, 82, 79, 83, 69, 84, 84, 69, 128, 82, 79, 83, 69, 128,
-    82, 79, 79, 84, 128, 82, 79, 79, 83, 84, 69, 82, 128, 82, 79, 79, 77,
-    128, 82, 79, 79, 75, 128, 82, 79, 79, 203, 82, 79, 79, 70, 128, 82, 79,
-    77, 65, 78, 73, 65, 206, 82, 79, 77, 65, 206, 82, 79, 77, 128, 82, 79,
-    76, 76, 73, 78, 199, 82, 79, 76, 76, 69, 210, 82, 79, 76, 76, 69, 68, 45,
-    85, 208, 82, 79, 76, 204, 82, 79, 72, 73, 78, 71, 89, 193, 82, 79, 71,
-    79, 77, 128, 82, 79, 71, 128, 82, 79, 196, 82, 79, 67, 75, 69, 84, 128,
-    82, 79, 67, 203, 82, 79, 67, 128, 82, 79, 66, 79, 212, 82, 79, 66, 65,
-    84, 128, 82, 79, 65, 83, 84, 69, 196, 82, 79, 65, 82, 128, 82, 79, 65,
-    128, 82, 79, 45, 54, 128, 82, 79, 45, 53, 128, 82, 79, 45, 52, 128, 82,
-    79, 45, 51, 128, 82, 79, 45, 50, 128, 82, 79, 45, 49, 128, 82, 78, 89,
-    73, 78, 199, 82, 78, 79, 79, 78, 128, 82, 78, 79, 79, 206, 82, 78, 65,
-    205, 82, 77, 84, 128, 82, 76, 79, 128, 82, 76, 77, 128, 82, 76, 73, 128,
-    82, 76, 69, 128, 82, 74, 69, 211, 82, 74, 69, 128, 82, 74, 197, 82, 73,
-    84, 85, 65, 76, 128, 82, 73, 84, 84, 79, 82, 85, 128, 82, 73, 84, 83, 73,
-    128, 82, 73, 83, 73, 78, 199, 82, 73, 83, 72, 128, 82, 73, 82, 65, 128,
-    82, 73, 80, 80, 76, 197, 82, 73, 80, 128, 82, 73, 78, 71, 211, 82, 73,
-    78, 71, 73, 78, 199, 82, 73, 78, 71, 69, 196, 82, 73, 78, 70, 79, 82, 90,
-    65, 78, 68, 79, 128, 82, 73, 206, 82, 73, 77, 71, 66, 65, 128, 82, 73,
-    77, 128, 82, 73, 75, 82, 73, 75, 128, 82, 73, 71, 86, 69, 68, 73, 195,
-    82, 73, 71, 72, 84, 87, 65, 82, 68, 83, 128, 82, 73, 71, 72, 84, 72, 65,
-    78, 196, 82, 73, 71, 72, 84, 45, 84, 79, 45, 76, 69, 70, 212, 82, 73, 71,
-    72, 84, 45, 83, 73, 68, 197, 82, 73, 71, 72, 84, 45, 83, 72, 65, 68, 79,
-    87, 69, 196, 82, 73, 71, 72, 84, 45, 83, 72, 65, 68, 69, 196, 82, 73, 71,
-    72, 84, 45, 80, 79, 73, 78, 84, 73, 78, 199, 82, 73, 71, 72, 84, 45, 76,
-    73, 71, 72, 84, 69, 196, 82, 73, 71, 72, 84, 45, 72, 65, 78, 68, 69, 196,
-    82, 73, 71, 72, 84, 45, 72, 65, 78, 196, 82, 73, 71, 72, 84, 45, 70, 65,
-    67, 73, 78, 199, 82, 73, 70, 76, 69, 128, 82, 73, 69, 85, 76, 45, 89, 69,
-    83, 73, 69, 85, 78, 71, 128, 82, 73, 69, 85, 76, 45, 89, 69, 79, 82, 73,
-    78, 72, 73, 69, 85, 72, 45, 72, 73, 69, 85, 72, 128, 82, 73, 69, 85, 76,
-    45, 89, 69, 79, 82, 73, 78, 72, 73, 69, 85, 72, 128, 82, 73, 69, 85, 76,
-    45, 84, 73, 75, 69, 85, 84, 45, 72, 73, 69, 85, 72, 128, 82, 73, 69, 85,
-    76, 45, 84, 73, 75, 69, 85, 84, 128, 82, 73, 69, 85, 76, 45, 84, 72, 73,
-    69, 85, 84, 72, 128, 82, 73, 69, 85, 76, 45, 83, 83, 65, 78, 71, 84, 73,
-    75, 69, 85, 84, 128, 82, 73, 69, 85, 76, 45, 83, 83, 65, 78, 71, 83, 73,
-    79, 83, 128, 82, 73, 69, 85, 76, 45, 83, 83, 65, 78, 71, 80, 73, 69, 85,
-    80, 128, 82, 73, 69, 85, 76, 45, 83, 83, 65, 78, 71, 75, 73, 89, 69, 79,
-    75, 128, 82, 73, 69, 85, 76, 45, 83, 73, 79, 83, 128, 82, 73, 69, 85, 76,
-    45, 80, 73, 69, 85, 80, 45, 84, 73, 75, 69, 85, 84, 128, 82, 73, 69, 85,
-    76, 45, 80, 73, 69, 85, 80, 45, 83, 73, 79, 83, 128, 82, 73, 69, 85, 76,
-    45, 80, 73, 69, 85, 80, 45, 80, 72, 73, 69, 85, 80, 72, 128, 82, 73, 69,
-    85, 76, 45, 80, 73, 69, 85, 80, 45, 72, 73, 69, 85, 72, 128, 82, 73, 69,
-    85, 76, 45, 80, 73, 69, 85, 80, 128, 82, 73, 69, 85, 76, 45, 80, 72, 73,
-    69, 85, 80, 72, 128, 82, 73, 69, 85, 76, 45, 80, 65, 78, 83, 73, 79, 83,
-    128, 82, 73, 69, 85, 76, 45, 78, 73, 69, 85, 78, 128, 82, 73, 69, 85, 76,
-    45, 77, 73, 69, 85, 77, 45, 83, 73, 79, 83, 128, 82, 73, 69, 85, 76, 45,
-    77, 73, 69, 85, 77, 45, 75, 73, 89, 69, 79, 75, 128, 82, 73, 69, 85, 76,
-    45, 77, 73, 69, 85, 77, 45, 72, 73, 69, 85, 72, 128, 82, 73, 69, 85, 76,
-    45, 77, 73, 69, 85, 77, 128, 82, 73, 69, 85, 76, 45, 75, 73, 89, 69, 79,
-    75, 45, 83, 73, 79, 83, 128, 82, 73, 69, 85, 76, 45, 75, 73, 89, 69, 79,
-    75, 45, 72, 73, 69, 85, 72, 128, 82, 73, 69, 85, 76, 45, 75, 73, 89, 69,
-    79, 75, 128, 82, 73, 69, 85, 76, 45, 75, 65, 80, 89, 69, 79, 85, 78, 80,
-    73, 69, 85, 80, 128, 82, 73, 69, 85, 76, 45, 72, 73, 69, 85, 72, 128, 82,
-    73, 69, 85, 76, 45, 67, 73, 69, 85, 67, 128, 82, 73, 69, 85, 204, 82, 73,
-    69, 76, 128, 82, 73, 69, 69, 128, 82, 73, 67, 75, 83, 72, 65, 87, 128,
-    82, 73, 67, 69, 77, 128, 82, 73, 67, 69, 128, 82, 73, 67, 197, 82, 73,
-    66, 66, 79, 78, 128, 82, 73, 66, 66, 79, 206, 82, 73, 65, 204, 82, 73,
-    45, 55, 128, 82, 73, 45, 54, 128, 82, 73, 45, 53, 128, 82, 73, 45, 52,
-    128, 82, 73, 45, 51, 128, 82, 73, 45, 50, 128, 82, 73, 45, 49, 128, 82,
-    72, 79, 84, 73, 195, 82, 72, 79, 128, 82, 72, 207, 82, 72, 73, 78, 79,
-    67, 69, 82, 79, 83, 128, 82, 72, 65, 128, 82, 72, 128, 82, 71, 89, 73,
-    78, 71, 83, 128, 82, 71, 89, 65, 78, 128, 82, 71, 89, 193, 82, 69, 86,
-    79, 76, 86, 73, 78, 199, 82, 69, 86, 79, 76, 85, 84, 73, 79, 78, 128, 82,
-    69, 86, 77, 65, 128, 82, 69, 86, 73, 65, 128, 82, 69, 86, 69, 82, 83, 69,
-    68, 45, 83, 67, 72, 87, 65, 128, 82, 69, 86, 69, 82, 83, 69, 68, 128, 82,
-    69, 86, 69, 82, 83, 69, 196, 82, 69, 86, 69, 82, 83, 197, 82, 69, 85, 88,
-    128, 82, 69, 85, 128, 82, 69, 84, 85, 82, 78, 128, 82, 69, 84, 85, 82,
-    206, 82, 69, 84, 82, 79, 70, 76, 69, 216, 82, 69, 84, 82, 69, 65, 84,
-    128, 82, 69, 84, 79, 82, 84, 128, 82, 69, 83, 85, 80, 73, 78, 85, 83,
-    128, 82, 69, 83, 84, 82, 79, 79, 77, 128, 82, 69, 83, 84, 82, 73, 67, 84,
-    69, 196, 82, 69, 83, 84, 128, 82, 69, 83, 80, 79, 78, 83, 69, 128, 82,
-    69, 83, 79, 85, 82, 67, 69, 128, 82, 69, 83, 79, 76, 85, 84, 73, 79, 78,
-    128, 82, 69, 83, 73, 83, 84, 65, 78, 67, 69, 128, 82, 69, 83, 73, 68, 69,
-    78, 67, 69, 128, 82, 69, 83, 72, 45, 65, 89, 73, 78, 45, 68, 65, 76, 69,
-    84, 72, 128, 82, 69, 83, 72, 45, 65, 89, 73, 78, 128, 82, 69, 83, 200,
-    82, 69, 82, 69, 78, 71, 71, 65, 78, 128, 82, 69, 82, 69, 75, 65, 78, 128,
-    82, 69, 80, 82, 69, 83, 69, 78, 84, 128, 82, 69, 80, 76, 65, 67, 69, 77,
-    69, 78, 212, 82, 69, 80, 72, 65, 128, 82, 69, 80, 72, 128, 82, 69, 80,
-    69, 84, 73, 84, 73, 79, 206, 82, 69, 80, 69, 65, 84, 69, 196, 82, 69, 80,
-    69, 65, 84, 128, 82, 69, 80, 69, 65, 212, 82, 69, 80, 65, 89, 65, 128,
-    82, 69, 80, 65, 128, 82, 69, 80, 193, 82, 69, 78, 84, 79, 71, 69, 78,
-    128, 82, 69, 78, 128, 82, 69, 206, 82, 69, 77, 85, 128, 82, 69, 77, 73,
-    78, 68, 69, 210, 82, 69, 77, 69, 68, 89, 128, 82, 69, 76, 73, 71, 73, 79,
-    78, 128, 82, 69, 76, 73, 69, 86, 69, 196, 82, 69, 76, 69, 65, 83, 69,
-    128, 82, 69, 76, 65, 88, 69, 68, 128, 82, 69, 76, 65, 84, 73, 79, 78, 65,
-    204, 82, 69, 76, 65, 84, 73, 79, 78, 128, 82, 69, 76, 65, 65, 128, 82,
-    69, 74, 65, 78, 199, 82, 69, 73, 87, 65, 128, 82, 69, 73, 196, 82, 69,
-    73, 128, 82, 69, 71, 85, 76, 85, 83, 45, 52, 128, 82, 69, 71, 85, 76, 85,
-    83, 45, 51, 128, 82, 69, 71, 85, 76, 85, 83, 45, 50, 128, 82, 69, 71, 85,
-    76, 85, 83, 128, 82, 69, 71, 85, 76, 85, 211, 82, 69, 71, 73, 83, 84, 69,
-    82, 69, 196, 82, 69, 71, 73, 79, 78, 65, 204, 82, 69, 71, 73, 65, 45, 50,
-    128, 82, 69, 71, 73, 65, 128, 82, 69, 70, 79, 82, 77, 69, 196, 82, 69,
-    70, 69, 82, 69, 78, 67, 197, 82, 69, 68, 85, 80, 76, 73, 67, 65, 84, 73,
-    79, 78, 128, 82, 69, 67, 89, 67, 76, 73, 78, 199, 82, 69, 67, 89, 67, 76,
-    69, 196, 82, 69, 67, 84, 73, 76, 73, 78, 69, 65, 210, 82, 69, 67, 84, 65,
-    78, 71, 85, 76, 65, 210, 82, 69, 67, 84, 65, 78, 71, 76, 69, 128, 82, 69,
-    67, 84, 65, 78, 71, 76, 197, 82, 69, 67, 82, 69, 65, 84, 73, 79, 78, 65,
-    204, 82, 69, 67, 79, 82, 68, 73, 78, 199, 82, 69, 67, 79, 82, 68, 69, 82,
-    128, 82, 69, 67, 79, 82, 68, 128, 82, 69, 67, 79, 82, 196, 82, 69, 67,
-    73, 84, 65, 84, 73, 86, 197, 82, 69, 67, 69, 80, 84, 73, 86, 197, 82, 69,
-    67, 69, 73, 86, 69, 82, 128, 82, 69, 67, 69, 73, 86, 69, 210, 82, 69, 67,
-    69, 73, 80, 84, 128, 82, 69, 65, 76, 71, 65, 82, 45, 50, 128, 82, 69, 65,
-    76, 71, 65, 82, 128, 82, 69, 65, 72, 77, 85, 75, 128, 82, 69, 65, 68, 73,
-    78, 199, 82, 69, 65, 67, 72, 128, 82, 69, 45, 52, 128, 82, 69, 45, 51,
-    128, 82, 69, 45, 50, 128, 82, 69, 45, 49, 128, 82, 68, 207, 82, 68, 69,
-    204, 82, 66, 65, 83, 193, 82, 65, 90, 83, 69, 75, 65, 128, 82, 65, 90,
-    79, 82, 128, 82, 65, 89, 83, 128, 82, 65, 89, 211, 82, 65, 89, 65, 78,
-    78, 65, 128, 82, 65, 86, 78, 79, 128, 82, 65, 84, 73, 79, 128, 82, 65,
-    84, 72, 65, 128, 82, 65, 84, 72, 193, 82, 65, 84, 65, 128, 82, 65, 84,
-    128, 82, 65, 83, 87, 65, 68, 73, 128, 82, 65, 83, 79, 85, 204, 82, 65,
-    83, 72, 65, 128, 82, 65, 81, 128, 82, 65, 80, 73, 83, 77, 65, 128, 82,
-    65, 78, 71, 197, 82, 65, 78, 65, 128, 82, 65, 78, 128, 82, 65, 77, 211,
-    82, 65, 77, 66, 65, 84, 128, 82, 65, 75, 72, 65, 78, 71, 128, 82, 65, 75,
-    65, 65, 82, 65, 65, 78, 83, 65, 89, 65, 128, 82, 65, 73, 83, 73, 78, 199,
-    82, 65, 73, 83, 69, 68, 128, 82, 65, 73, 83, 69, 196, 82, 65, 73, 78, 66,
-    79, 87, 128, 82, 65, 73, 76, 87, 65, 89, 128, 82, 65, 73, 76, 87, 65,
-    217, 82, 65, 73, 76, 128, 82, 65, 73, 68, 207, 82, 65, 73, 68, 65, 128,
-    82, 65, 72, 77, 65, 84, 85, 76, 76, 65, 200, 82, 65, 72, 73, 77, 65, 72,
-    85, 205, 82, 65, 72, 73, 77, 65, 72, 213, 82, 65, 70, 69, 128, 82, 65,
-    69, 77, 128, 82, 65, 68, 73, 79, 65, 67, 84, 73, 86, 197, 82, 65, 68, 73,
-    79, 128, 82, 65, 68, 73, 207, 82, 65, 68, 201, 82, 65, 68, 128, 82, 65,
-    196, 82, 65, 67, 81, 85, 69, 212, 82, 65, 67, 73, 78, 71, 128, 82, 65,
-    67, 73, 78, 199, 82, 65, 67, 67, 79, 79, 78, 128, 82, 65, 66, 66, 73, 84,
-    128, 82, 65, 66, 66, 73, 212, 82, 65, 66, 128, 82, 65, 65, 73, 128, 82,
-    65, 51, 128, 82, 65, 50, 128, 82, 65, 45, 75, 65, 82, 65, 128, 82, 65,
-    45, 52, 128, 82, 65, 45, 51, 128, 82, 65, 45, 50, 128, 82, 65, 45, 49,
-    128, 82, 48, 50, 57, 128, 82, 48, 50, 56, 128, 82, 48, 50, 55, 128, 82,
-    48, 50, 54, 128, 82, 48, 50, 53, 128, 82, 48, 50, 52, 128, 82, 48, 50,
-    51, 128, 82, 48, 50, 50, 128, 82, 48, 50, 49, 128, 82, 48, 50, 48, 128,
-    82, 48, 49, 57, 128, 82, 48, 49, 56, 128, 82, 48, 49, 55, 128, 82, 48,
-    49, 54, 65, 128, 82, 48, 49, 54, 128, 82, 48, 49, 53, 128, 82, 48, 49,
-    52, 128, 82, 48, 49, 51, 128, 82, 48, 49, 50, 128, 82, 48, 49, 49, 128,
-    82, 48, 49, 48, 65, 128, 82, 48, 49, 48, 128, 82, 48, 48, 57, 128, 82,
-    48, 48, 56, 128, 82, 48, 48, 55, 128, 82, 48, 48, 54, 128, 82, 48, 48,
-    53, 128, 82, 48, 48, 52, 128, 82, 48, 48, 51, 66, 128, 82, 48, 48, 51,
-    65, 128, 82, 48, 48, 51, 128, 82, 48, 48, 50, 65, 128, 82, 48, 48, 50,
-    128, 82, 48, 48, 49, 128, 82, 45, 67, 82, 69, 197, 81, 89, 88, 128, 81,
-    89, 85, 128, 81, 89, 84, 128, 81, 89, 82, 88, 128, 81, 89, 82, 128, 81,
-    89, 80, 128, 81, 89, 79, 128, 81, 89, 73, 128, 81, 89, 69, 69, 128, 81,
-    89, 69, 128, 81, 89, 65, 65, 128, 81, 89, 65, 128, 81, 89, 128, 81, 87,
-    73, 128, 81, 87, 69, 69, 128, 81, 87, 69, 128, 81, 87, 65, 65, 128, 81,
-    87, 65, 128, 81, 85, 88, 128, 81, 85, 86, 128, 81, 85, 85, 86, 128, 81,
-    85, 85, 128, 81, 85, 84, 128, 81, 85, 83, 72, 83, 72, 65, 89, 65, 128,
-    81, 85, 82, 88, 128, 81, 85, 82, 128, 81, 85, 80, 128, 81, 85, 79, 88,
-    128, 81, 85, 79, 84, 197, 81, 85, 79, 84, 65, 84, 73, 79, 206, 81, 85,
-    79, 84, 128, 81, 85, 79, 80, 128, 81, 85, 79, 128, 81, 85, 75, 128, 81,
-    85, 73, 78, 84, 73, 76, 69, 128, 81, 85, 73, 78, 84, 69, 83, 83, 69, 78,
-    67, 69, 128, 81, 85, 73, 78, 68, 73, 67, 69, 83, 73, 77, 193, 81, 85, 73,
-    78, 67, 85, 78, 88, 128, 81, 85, 73, 78, 65, 82, 73, 85, 211, 81, 85, 73,
-    76, 212, 81, 85, 73, 76, 76, 128, 81, 85, 73, 67, 203, 81, 85, 73, 128,
-    81, 85, 70, 128, 81, 85, 69, 83, 84, 73, 79, 78, 69, 196, 81, 85, 69, 83,
-    84, 73, 79, 78, 128, 81, 85, 69, 83, 84, 73, 79, 206, 81, 85, 69, 69, 78,
-    128, 81, 85, 69, 69, 206, 81, 85, 69, 128, 81, 85, 68, 68, 73, 83, 193,
-    81, 85, 66, 85, 84, 83, 128, 81, 85, 65, 84, 69, 82, 78, 73, 79, 206, 81,
-    85, 65, 82, 84, 69, 82, 83, 128, 81, 85, 65, 82, 84, 69, 82, 211, 81, 85,
-    65, 82, 84, 69, 82, 128, 81, 85, 65, 79, 65, 82, 128, 81, 85, 65, 78, 84,
-    73, 84, 217, 81, 85, 65, 68, 82, 85, 80, 76, 197, 81, 85, 65, 68, 82, 65,
-    78, 84, 128, 81, 85, 65, 68, 82, 65, 78, 212, 81, 85, 65, 68, 67, 79, 76,
-    79, 78, 128, 81, 85, 65, 68, 128, 81, 85, 65, 196, 81, 85, 65, 128, 81,
-    85, 128, 81, 208, 81, 79, 88, 128, 81, 79, 84, 128, 81, 79, 80, 72, 128,
-    81, 79, 80, 65, 128, 81, 79, 80, 128, 81, 79, 79, 128, 81, 79, 207, 81,
-    79, 70, 128, 81, 79, 198, 81, 79, 65, 128, 81, 79, 128, 81, 78, 128, 81,
-    73, 88, 128, 81, 73, 84, 83, 65, 128, 81, 73, 84, 128, 81, 73, 80, 128,
-    81, 73, 73, 128, 81, 73, 70, 128, 81, 73, 69, 88, 128, 81, 73, 69, 84,
-    128, 81, 73, 69, 80, 128, 81, 73, 69, 128, 81, 73, 128, 81, 72, 87, 73,
-    128, 81, 72, 87, 69, 69, 128, 81, 72, 87, 69, 128, 81, 72, 87, 65, 65,
-    128, 81, 72, 87, 65, 128, 81, 72, 85, 128, 81, 72, 79, 80, 72, 128, 81,
-    72, 79, 128, 81, 72, 73, 128, 81, 72, 69, 69, 128, 81, 72, 69, 128, 81,
-    72, 65, 85, 128, 81, 72, 65, 65, 128, 81, 72, 65, 128, 81, 71, 65, 128,
-    81, 69, 84, 65, 78, 65, 128, 81, 69, 69, 128, 81, 69, 128, 81, 65, 89,
-    128, 81, 65, 85, 128, 81, 65, 84, 65, 78, 128, 81, 65, 83, 82, 128, 81,
-    65, 82, 78, 69, 217, 81, 65, 82, 128, 81, 65, 81, 128, 81, 65, 80, 72,
-    128, 81, 65, 77, 65, 84, 83, 128, 81, 65, 77, 65, 84, 211, 81, 65, 76,
-    193, 81, 65, 73, 82, 84, 72, 82, 65, 128, 81, 65, 73, 128, 81, 65, 70,
-    128, 81, 65, 198, 81, 65, 68, 77, 65, 128, 81, 65, 65, 73, 128, 81, 65,
-    65, 70, 85, 128, 81, 65, 65, 70, 128, 81, 48, 48, 55, 128, 81, 48, 48,
-    54, 128, 81, 48, 48, 53, 128, 81, 48, 48, 52, 128, 81, 48, 48, 51, 128,
-    81, 48, 48, 50, 128, 81, 48, 48, 49, 128, 80, 90, 128, 80, 89, 88, 128,
-    80, 89, 84, 128, 80, 89, 82, 88, 128, 80, 89, 82, 128, 80, 89, 80, 128,
-    80, 87, 79, 89, 128, 80, 87, 79, 79, 128, 80, 87, 79, 128, 80, 87, 207,
-    80, 87, 73, 73, 128, 80, 87, 73, 128, 80, 87, 69, 69, 128, 80, 87, 69,
-    128, 80, 87, 65, 65, 128, 80, 87, 128, 80, 86, 128, 80, 85, 90, 90, 76,
-    197, 80, 85, 88, 128, 80, 85, 85, 84, 128, 80, 85, 85, 128, 80, 85, 84,
-    82, 69, 70, 65, 67, 84, 73, 79, 78, 128, 80, 85, 84, 78, 65, 89, 65, 128,
-    80, 85, 84, 128, 80, 85, 212, 80, 85, 83, 72, 80, 73, 78, 128, 80, 85,
-    83, 72, 80, 73, 75, 65, 128, 80, 85, 83, 72, 73, 78, 199, 80, 85, 82, 88,
-    128, 80, 85, 82, 83, 69, 128, 80, 85, 82, 80, 76, 197, 80, 85, 82, 78,
-    65, 77, 65, 128, 80, 85, 82, 73, 84, 89, 128, 80, 85, 82, 73, 70, 89,
-    128, 80, 85, 82, 128, 80, 85, 81, 128, 80, 85, 80, 128, 80, 85, 79, 88,
-    128, 80, 85, 79, 80, 128, 80, 85, 79, 128, 80, 85, 78, 71, 65, 65, 77,
-    128, 80, 85, 78, 71, 128, 80, 85, 78, 67, 84, 85, 211, 80, 85, 78, 67,
-    84, 85, 65, 84, 73, 79, 78, 128, 80, 85, 78, 67, 84, 85, 65, 84, 73, 79,
-    206, 80, 85, 77, 80, 128, 80, 85, 77, 128, 80, 85, 70, 70, 69, 68, 128,
-    80, 85, 69, 128, 80, 85, 67, 75, 128, 80, 85, 66, 76, 73, 195, 80, 85,
-    194, 80, 85, 65, 81, 128, 80, 85, 65, 69, 128, 80, 85, 65, 67, 72, 85,
-    197, 80, 85, 50, 128, 80, 85, 49, 128, 80, 85, 128, 80, 84, 72, 65, 72,
-    193, 80, 84, 69, 128, 80, 83, 73, 76, 201, 80, 83, 73, 70, 73, 83, 84,
-    79, 83, 89, 78, 65, 71, 77, 65, 128, 80, 83, 73, 70, 73, 83, 84, 79, 80,
-    65, 82, 65, 75, 65, 76, 69, 83, 77, 65, 128, 80, 83, 73, 70, 73, 83, 84,
-    79, 206, 80, 83, 73, 70, 73, 83, 84, 79, 76, 89, 71, 73, 83, 77, 65, 128,
-    80, 83, 73, 128, 80, 83, 65, 76, 84, 69, 210, 80, 83, 128, 80, 82, 79,
-    86, 69, 128, 80, 82, 79, 84, 79, 86, 65, 82, 89, 211, 80, 82, 79, 84, 79,
-    211, 80, 82, 79, 84, 69, 67, 84, 69, 196, 80, 82, 79, 83, 84, 65, 89, 65,
-    128, 80, 82, 79, 83, 71, 69, 71, 82, 65, 77, 77, 69, 78, 73, 128, 80, 82,
-    79, 83, 69, 82, 80, 73, 78, 65, 128, 80, 82, 79, 80, 79, 82, 84, 73, 79,
-    78, 65, 204, 80, 82, 79, 80, 79, 82, 84, 73, 79, 78, 128, 80, 82, 79, 80,
-    69, 82, 84, 217, 80, 82, 79, 80, 69, 76, 76, 69, 210, 80, 82, 79, 79, 70,
-    128, 80, 82, 79, 76, 79, 78, 71, 69, 196, 80, 82, 79, 76, 65, 84, 73, 79,
-    78, 197, 80, 82, 79, 74, 69, 67, 84, 79, 82, 128, 80, 82, 79, 74, 69, 67,
-    84, 73, 86, 69, 128, 80, 82, 79, 74, 69, 67, 84, 73, 79, 78, 128, 80, 82,
-    79, 72, 73, 66, 73, 84, 69, 196, 80, 82, 79, 71, 82, 69, 83, 83, 128, 80,
-    82, 79, 71, 82, 65, 205, 80, 82, 79, 70, 79, 85, 78, 68, 128, 80, 82, 79,
-    68, 85, 67, 84, 128, 80, 82, 79, 68, 85, 67, 212, 80, 82, 79, 66, 73, 78,
-    199, 80, 82, 73, 90, 78, 65, 203, 80, 82, 73, 86, 65, 84, 69, 128, 80,
-    82, 73, 86, 65, 84, 197, 80, 82, 73, 86, 65, 67, 217, 80, 82, 73, 83, 72,
-    84, 72, 65, 77, 65, 84, 82, 193, 80, 82, 73, 78, 84, 83, 128, 80, 82, 73,
-    78, 84, 69, 82, 128, 80, 82, 73, 78, 84, 69, 210, 80, 82, 73, 78, 84,
-    128, 80, 82, 73, 78, 212, 80, 82, 73, 78, 67, 69, 83, 83, 128, 80, 82,
-    73, 78, 67, 69, 128, 80, 82, 73, 77, 69, 128, 80, 82, 73, 77, 197, 80,
-    82, 69, 86, 73, 79, 85, 211, 80, 82, 69, 84, 90, 69, 76, 128, 80, 82, 69,
-    83, 83, 69, 196, 80, 82, 69, 83, 69, 84, 128, 80, 82, 69, 83, 69, 78, 84,
-    65, 84, 73, 79, 206, 80, 82, 69, 83, 67, 82, 73, 80, 84, 73, 79, 206, 80,
-    82, 69, 80, 79, 78, 68, 69, 82, 65, 78, 67, 69, 128, 80, 82, 69, 78, 75,
-    72, 65, 128, 80, 82, 69, 71, 78, 65, 78, 212, 80, 82, 69, 70, 73, 88, 69,
-    196, 80, 82, 69, 70, 65, 67, 197, 80, 82, 69, 67, 73, 80, 73, 84, 65, 84,
-    69, 128, 80, 82, 69, 67, 69, 68, 73, 78, 199, 80, 82, 69, 67, 69, 68, 69,
-    83, 128, 80, 82, 69, 67, 69, 68, 69, 211, 80, 82, 69, 67, 69, 68, 69,
-    196, 80, 82, 69, 67, 69, 68, 69, 128, 80, 82, 69, 67, 69, 68, 197, 80,
-    82, 65, 89, 69, 210, 80, 82, 65, 77, 45, 80, 73, 73, 128, 80, 82, 65, 77,
-    45, 80, 73, 201, 80, 82, 65, 77, 45, 77, 85, 79, 89, 128, 80, 82, 65, 77,
-    45, 77, 85, 79, 217, 80, 82, 65, 77, 45, 66, 85, 79, 78, 128, 80, 82, 65,
-    77, 45, 66, 85, 79, 206, 80, 82, 65, 77, 45, 66, 69, 73, 128, 80, 82, 65,
-    77, 45, 66, 69, 201, 80, 82, 65, 77, 128, 80, 82, 65, 205, 80, 82, 128,
-    80, 80, 86, 128, 80, 80, 77, 128, 80, 80, 65, 128, 80, 79, 89, 128, 80,
-    79, 88, 128, 80, 79, 87, 69, 82, 211, 80, 79, 87, 69, 82, 128, 80, 79,
-    87, 69, 210, 80, 79, 87, 68, 69, 82, 69, 196, 80, 79, 87, 68, 69, 82,
-    128, 80, 79, 86, 89, 83, 72, 69, 128, 80, 79, 86, 89, 83, 72, 197, 80,
-    79, 86, 79, 68, 78, 89, 128, 80, 79, 85, 82, 73, 78, 199, 80, 79, 85, 78,
-    196, 80, 79, 85, 76, 84, 82, 217, 80, 79, 85, 67, 72, 128, 80, 79, 84,
-    84, 69, 196, 80, 79, 84, 65, 84, 79, 128, 80, 79, 84, 65, 66, 76, 197,
-    80, 79, 212, 80, 79, 83, 84, 80, 79, 83, 73, 84, 73, 79, 206, 80, 79, 83,
-    84, 66, 79, 88, 128, 80, 79, 83, 84, 65, 204, 80, 79, 83, 84, 128, 80,
-    79, 83, 212, 80, 79, 83, 83, 69, 83, 83, 73, 79, 78, 128, 80, 79, 83, 83,
-    69, 83, 83, 73, 79, 206, 80, 79, 83, 73, 84, 73, 79, 78, 83, 128, 80, 79,
-    83, 73, 84, 73, 79, 78, 128, 80, 79, 83, 69, 73, 68, 79, 78, 128, 80, 79,
-    82, 84, 65, 66, 76, 197, 80, 79, 82, 82, 69, 67, 84, 85, 83, 128, 80, 79,
-    82, 82, 69, 67, 84, 85, 211, 80, 79, 80, 80, 73, 78, 199, 80, 79, 80, 80,
-    69, 82, 128, 80, 79, 80, 67, 79, 82, 78, 128, 80, 79, 80, 128, 80, 79,
-    208, 80, 79, 79, 68, 76, 69, 128, 80, 79, 79, 128, 80, 79, 78, 68, 79,
-    128, 80, 79, 206, 80, 79, 77, 77, 69, 69, 128, 80, 79, 77, 77, 69, 197,
-    80, 79, 76, 85, 80, 79, 86, 79, 68, 78, 65, 89, 65, 128, 80, 79, 76, 79,
-    128, 80, 79, 76, 78, 65, 89, 65, 128, 80, 79, 76, 76, 85, 128, 80, 79,
-    76, 75, 85, 76, 73, 90, 77, 89, 128, 80, 79, 76, 73, 83, 72, 128, 80, 79,
-    76, 73, 83, 200, 80, 79, 76, 73, 67, 197, 80, 79, 76, 201, 80, 79, 76,
-    69, 128, 80, 79, 76, 197, 80, 79, 75, 82, 89, 84, 73, 69, 128, 80, 79,
-    75, 79, 74, 73, 128, 80, 79, 73, 78, 84, 211, 80, 79, 73, 78, 84, 79,
-    128, 80, 79, 73, 78, 84, 69, 82, 128, 80, 79, 73, 78, 84, 69, 196, 80,
-    79, 73, 78, 84, 128, 80, 79, 73, 78, 212, 80, 79, 69, 84, 82, 217, 80,
-    79, 69, 84, 73, 195, 80, 79, 68, 86, 69, 82, 84, 75, 65, 128, 80, 79, 68,
-    67, 72, 65, 83, 72, 73, 69, 77, 128, 80, 79, 68, 67, 72, 65, 83, 72, 73,
-    69, 128, 80, 79, 68, 67, 72, 65, 83, 72, 73, 197, 80, 79, 68, 65, 84, 85,
-    83, 128, 80, 79, 67, 75, 69, 212, 80, 79, 65, 128, 80, 207, 80, 78, 69,
-    85, 77, 65, 84, 65, 128, 80, 76, 85, 84, 207, 80, 76, 85, 84, 65, 128,
-    80, 76, 85, 83, 45, 77, 73, 78, 85, 211, 80, 76, 85, 83, 128, 80, 76, 85,
-    82, 65, 76, 128, 80, 76, 85, 78, 71, 69, 82, 128, 80, 76, 85, 77, 69,
-    196, 80, 76, 85, 77, 128, 80, 76, 85, 75, 128, 80, 76, 85, 71, 128, 80,
-    76, 85, 128, 80, 76, 79, 87, 128, 80, 76, 79, 80, 72, 85, 128, 80, 76,
-    72, 65, 85, 128, 80, 76, 69, 84, 72, 82, 79, 78, 128, 80, 76, 69, 65, 68,
-    73, 78, 199, 80, 76, 68, 128, 80, 76, 65, 89, 73, 78, 199, 80, 76, 65,
-    89, 71, 82, 79, 85, 78, 196, 80, 76, 65, 84, 69, 128, 80, 76, 65, 83, 84,
-    73, 67, 83, 128, 80, 76, 65, 78, 84, 128, 80, 76, 65, 78, 69, 84, 128,
-    80, 76, 65, 78, 69, 128, 80, 76, 65, 78, 67, 203, 80, 76, 65, 75, 128,
-    80, 76, 65, 71, 73, 79, 211, 80, 76, 65, 67, 69, 72, 79, 76, 68, 69, 82,
-    128, 80, 76, 65, 67, 69, 72, 79, 76, 68, 69, 210, 80, 76, 65, 67, 197,
-    80, 76, 65, 67, 65, 82, 68, 128, 80, 76, 65, 128, 80, 73, 90, 90, 73, 67,
-    65, 84, 79, 128, 80, 73, 90, 90, 65, 128, 80, 73, 88, 128, 80, 73, 87,
-    82, 128, 80, 73, 84, 67, 72, 70, 79, 82, 75, 128, 80, 73, 84, 67, 72, 70,
-    79, 82, 203, 80, 73, 84, 128, 80, 73, 83, 84, 79, 76, 128, 80, 73, 83,
-    69, 76, 69, 72, 128, 80, 73, 83, 67, 69, 83, 128, 80, 73, 82, 73, 71,
-    128, 80, 73, 82, 73, 199, 80, 73, 82, 73, 69, 69, 78, 128, 80, 73, 82,
-    65, 67, 89, 128, 80, 73, 82, 50, 128, 80, 73, 80, 73, 78, 71, 128, 80,
-    73, 80, 65, 69, 77, 71, 66, 73, 69, 69, 128, 80, 73, 80, 65, 69, 77, 66,
-    65, 128, 80, 73, 80, 128, 80, 73, 78, 87, 72, 69, 69, 204, 80, 73, 78,
-    203, 80, 73, 78, 69, 65, 80, 80, 76, 69, 128, 80, 73, 78, 197, 80, 73,
-    78, 67, 72, 73, 78, 199, 80, 73, 78, 67, 72, 69, 196, 80, 73, 78, 65, 84,
-    65, 128, 80, 73, 78, 65, 82, 66, 79, 82, 65, 83, 128, 80, 73, 76, 76,
-    128, 80, 73, 76, 197, 80, 73, 76, 67, 82, 79, 215, 80, 73, 75, 85, 82,
-    85, 128, 80, 73, 75, 79, 128, 80, 73, 71, 128, 80, 73, 199, 80, 73, 69,
-    88, 128, 80, 73, 69, 85, 80, 45, 84, 72, 73, 69, 85, 84, 72, 128, 80, 73,
-    69, 85, 80, 45, 83, 83, 65, 78, 71, 83, 73, 79, 83, 128, 80, 73, 69, 85,
-    80, 45, 83, 73, 79, 83, 45, 84, 73, 75, 69, 85, 84, 128, 80, 73, 69, 85,
-    80, 45, 83, 73, 79, 83, 45, 84, 72, 73, 69, 85, 84, 72, 128, 80, 73, 69,
-    85, 80, 45, 83, 73, 79, 83, 45, 80, 73, 69, 85, 80, 128, 80, 73, 69, 85,
-    80, 45, 83, 73, 79, 83, 45, 75, 73, 89, 69, 79, 75, 128, 80, 73, 69, 85,
-    80, 45, 83, 73, 79, 83, 45, 67, 73, 69, 85, 67, 128, 80, 73, 69, 85, 80,
-    45, 82, 73, 69, 85, 76, 45, 80, 72, 73, 69, 85, 80, 72, 128, 80, 73, 69,
-    85, 80, 45, 82, 73, 69, 85, 76, 128, 80, 73, 69, 85, 80, 45, 78, 73, 69,
-    85, 78, 128, 80, 73, 69, 85, 80, 45, 77, 73, 69, 85, 77, 128, 80, 73, 69,
-    85, 80, 45, 75, 72, 73, 69, 85, 75, 72, 128, 80, 73, 69, 85, 80, 45, 67,
-    73, 69, 85, 67, 128, 80, 73, 69, 85, 80, 45, 67, 72, 73, 69, 85, 67, 72,
-    128, 80, 73, 69, 85, 208, 80, 73, 69, 84, 128, 80, 73, 69, 80, 128, 80,
-    73, 69, 69, 84, 128, 80, 73, 69, 69, 81, 128, 80, 73, 69, 67, 69, 128,
-    80, 73, 69, 128, 80, 73, 67, 84, 85, 82, 69, 128, 80, 73, 67, 75, 85,
-    208, 80, 73, 67, 75, 69, 84, 128, 80, 73, 67, 75, 128, 80, 73, 65, 83,
-    85, 84, 79, 82, 85, 128, 80, 73, 65, 83, 84, 82, 197, 80, 73, 65, 83, 77,
-    193, 80, 73, 65, 78, 79, 128, 80, 201, 80, 72, 87, 65, 128, 80, 72, 85,
-    84, 72, 65, 79, 128, 80, 72, 85, 210, 80, 72, 85, 78, 71, 128, 80, 72,
-    82, 65, 83, 69, 128, 80, 72, 79, 78, 69, 83, 128, 80, 72, 79, 76, 85, 83,
-    128, 80, 72, 79, 69, 78, 73, 67, 73, 65, 206, 80, 72, 79, 65, 128, 80,
-    72, 79, 128, 80, 72, 207, 80, 72, 78, 65, 69, 203, 80, 72, 73, 78, 84,
-    72, 85, 128, 80, 72, 73, 76, 79, 83, 79, 80, 72, 69, 82, 211, 80, 72, 73,
-    76, 73, 80, 80, 73, 78, 197, 80, 72, 73, 69, 85, 80, 72, 45, 84, 72, 73,
-    69, 85, 84, 72, 128, 80, 72, 73, 69, 85, 80, 72, 45, 83, 73, 79, 83, 128,
-    80, 72, 73, 69, 85, 80, 72, 45, 80, 73, 69, 85, 80, 128, 80, 72, 73, 69,
-    85, 80, 72, 45, 72, 73, 69, 85, 72, 128, 80, 72, 73, 69, 85, 80, 200, 80,
-    72, 73, 128, 80, 72, 201, 80, 72, 69, 69, 128, 80, 72, 69, 128, 80, 72,
-    65, 83, 69, 45, 198, 80, 72, 65, 83, 69, 45, 195, 80, 72, 65, 83, 69, 45,
-    194, 80, 72, 65, 83, 69, 45, 193, 80, 72, 65, 82, 89, 78, 71, 69, 65,
-    204, 80, 72, 65, 82, 128, 80, 72, 65, 78, 128, 80, 72, 65, 77, 128, 80,
-    72, 65, 73, 83, 84, 79, 211, 80, 72, 65, 71, 83, 45, 80, 193, 80, 72, 65,
-    66, 128, 80, 72, 65, 65, 82, 75, 65, 65, 128, 80, 72, 65, 65, 128, 80,
-    71, 128, 80, 70, 128, 80, 69, 85, 88, 128, 80, 69, 85, 84, 65, 69, 128,
-    80, 69, 85, 84, 128, 80, 69, 84, 82, 201, 80, 69, 84, 65, 83, 84, 79, 75,
-    79, 85, 70, 73, 83, 77, 65, 128, 80, 69, 84, 65, 83, 84, 73, 128, 80, 69,
-    84, 65, 83, 77, 65, 128, 80, 69, 84, 65, 76, 76, 69, 196, 80, 69, 83, 79,
-    128, 80, 69, 83, 207, 80, 69, 83, 72, 50, 128, 80, 69, 83, 72, 178, 80,
-    69, 83, 69, 84, 193, 80, 69, 211, 80, 69, 82, 84, 72, 207, 80, 69, 82,
-    83, 80, 69, 67, 84, 73, 86, 69, 128, 80, 69, 82, 83, 79, 78, 65, 204, 80,
-    69, 82, 83, 79, 78, 128, 80, 69, 82, 83, 79, 206, 80, 69, 82, 83, 73, 65,
-    206, 80, 69, 82, 83, 69, 86, 69, 82, 73, 78, 199, 80, 69, 82, 80, 69, 78,
-    68, 73, 67, 85, 76, 65, 82, 128, 80, 69, 82, 80, 69, 78, 68, 73, 67, 85,
-    76, 65, 210, 80, 69, 82, 78, 73, 206, 80, 69, 82, 77, 73, 84, 84, 69,
-    196, 80, 69, 82, 77, 73, 195, 80, 69, 82, 77, 65, 78, 69, 78, 212, 80,
-    69, 82, 73, 83, 80, 79, 77, 69, 78, 73, 128, 80, 69, 82, 73, 83, 80, 79,
-    77, 69, 78, 201, 80, 69, 82, 70, 79, 82, 77, 73, 78, 199, 80, 69, 82, 70,
-    69, 67, 84, 85, 205, 80, 69, 82, 70, 69, 67, 84, 65, 128, 80, 69, 82, 70,
-    69, 67, 84, 193, 80, 69, 82, 69, 86, 79, 68, 75, 65, 128, 80, 69, 82, 69,
-    86, 79, 68, 75, 193, 80, 69, 82, 67, 85, 83, 83, 73, 86, 69, 128, 80, 69,
-    82, 67, 69, 78, 212, 80, 69, 80, 80, 69, 82, 128, 80, 69, 80, 69, 84,
-    128, 80, 69, 80, 69, 212, 80, 69, 79, 82, 84, 200, 80, 69, 79, 80, 76,
-    69, 128, 80, 69, 79, 80, 76, 197, 80, 69, 78, 84, 65, 84, 72, 76, 79, 78,
-    128, 80, 69, 78, 84, 65, 83, 69, 77, 69, 128, 80, 69, 78, 84, 65, 71, 82,
-    65, 77, 128, 80, 69, 78, 84, 65, 71, 79, 78, 128, 80, 69, 78, 83, 85,
-    128, 80, 69, 78, 83, 73, 86, 197, 80, 69, 78, 78, 217, 80, 69, 78, 78,
-    65, 78, 84, 128, 80, 69, 78, 73, 72, 73, 128, 80, 69, 78, 71, 85, 73, 78,
-    128, 80, 69, 78, 71, 75, 65, 76, 128, 80, 69, 78, 69, 84, 82, 65, 84, 73,
-    79, 78, 128, 80, 69, 78, 67, 73, 76, 128, 80, 69, 206, 80, 69, 76, 65,
-    83, 84, 79, 78, 128, 80, 69, 76, 65, 83, 84, 79, 206, 80, 69, 73, 84, 72,
-    128, 80, 69, 72, 69, 72, 128, 80, 69, 72, 69, 200, 80, 69, 72, 128, 80,
-    69, 200, 80, 69, 69, 90, 73, 128, 80, 69, 69, 83, 72, 73, 128, 80, 69,
-    69, 80, 128, 80, 69, 69, 77, 128, 80, 69, 69, 75, 73, 78, 199, 80, 69,
-    69, 73, 128, 80, 69, 69, 128, 80, 69, 68, 69, 83, 84, 82, 73, 65, 78, 83,
-    128, 80, 69, 68, 69, 83, 84, 82, 73, 65, 78, 128, 80, 69, 68, 69, 83, 84,
-    65, 76, 128, 80, 69, 68, 69, 83, 84, 65, 204, 80, 69, 68, 65, 204, 80,
-    69, 65, 78, 85, 84, 83, 128, 80, 69, 65, 75, 211, 80, 69, 65, 67, 79, 67,
-    75, 128, 80, 69, 65, 67, 72, 128, 80, 69, 65, 67, 69, 128, 80, 69, 65,
-    67, 197, 80, 69, 193, 80, 68, 73, 128, 80, 68, 70, 128, 80, 68, 128, 80,
-    67, 128, 80, 65, 90, 69, 82, 128, 80, 65, 89, 69, 82, 79, 75, 128, 80,
-    65, 89, 65, 78, 78, 65, 128, 80, 65, 89, 128, 80, 65, 88, 128, 80, 65,
-    87, 78, 128, 80, 65, 87, 206, 80, 65, 215, 80, 65, 86, 73, 89, 65, 78,
-    73, 128, 80, 65, 85, 83, 197, 80, 65, 85, 75, 128, 80, 65, 85, 128, 80,
-    65, 213, 80, 65, 84, 84, 217, 80, 65, 84, 84, 69, 82, 78, 128, 80, 65,
-    84, 72, 65, 77, 65, 83, 65, 84, 128, 80, 65, 84, 72, 65, 75, 75, 85, 128,
-    80, 65, 84, 200, 80, 65, 84, 65, 75, 128, 80, 65, 84, 65, 72, 128, 80,
-    65, 84, 128, 80, 65, 83, 85, 81, 128, 80, 65, 83, 83, 80, 79, 82, 212,
-    80, 65, 83, 83, 73, 86, 69, 45, 80, 85, 76, 76, 45, 85, 80, 45, 79, 85,
-    84, 80, 85, 212, 80, 65, 83, 83, 73, 86, 69, 45, 80, 85, 76, 76, 45, 68,
-    79, 87, 78, 45, 79, 85, 84, 80, 85, 212, 80, 65, 83, 83, 73, 77, 66, 65,
-    78, 71, 128, 80, 65, 83, 83, 69, 78, 71, 69, 210, 80, 65, 83, 83, 69,
-    196, 80, 65, 83, 72, 84, 65, 128, 80, 65, 83, 72, 65, 69, 128, 80, 65,
-    83, 69, 81, 128, 80, 65, 83, 65, 78, 71, 65, 206, 80, 65, 82, 85, 77,
-    128, 80, 65, 82, 84, 217, 80, 65, 82, 84, 78, 69, 82, 83, 72, 73, 208,
-    80, 65, 82, 84, 73, 65, 76, 76, 89, 45, 82, 69, 67, 89, 67, 76, 69, 196,
-    80, 65, 82, 84, 73, 65, 204, 80, 65, 82, 84, 72, 73, 65, 206, 80, 65, 82,
-    212, 80, 65, 82, 82, 79, 84, 128, 80, 65, 82, 75, 128, 80, 65, 82, 73,
-    67, 72, 79, 78, 128, 80, 65, 82, 69, 83, 84, 73, 71, 77, 69, 78, 79, 206,
-    80, 65, 82, 69, 82, 69, 78, 128, 80, 65, 82, 69, 78, 84, 72, 69, 83, 73,
-    83, 128, 80, 65, 82, 69, 78, 84, 72, 69, 83, 73, 211, 80, 65, 82, 69, 78,
-    84, 72, 69, 83, 69, 211, 80, 65, 82, 65, 80, 72, 82, 65, 83, 197, 80, 65,
-    82, 65, 76, 76, 69, 76, 79, 71, 82, 65, 77, 128, 80, 65, 82, 65, 76, 76,
-    69, 76, 128, 80, 65, 82, 65, 76, 76, 69, 204, 80, 65, 82, 65, 75, 76, 73,
-    84, 73, 75, 73, 128, 80, 65, 82, 65, 75, 76, 73, 84, 73, 75, 201, 80, 65,
-    82, 65, 75, 76, 73, 84, 128, 80, 65, 82, 65, 75, 65, 76, 69, 83, 77, 193,
-    80, 65, 82, 65, 71, 82, 65, 80, 72, 85, 211, 80, 65, 82, 65, 71, 82, 65,
-    80, 72, 79, 83, 128, 80, 65, 82, 65, 71, 82, 65, 80, 72, 128, 80, 65, 82,
-    65, 71, 82, 65, 80, 200, 80, 65, 82, 65, 67, 72, 85, 84, 69, 128, 80, 65,
-    82, 65, 128, 80, 65, 82, 128, 80, 65, 80, 89, 82, 85, 83, 128, 80, 65,
-    80, 69, 82, 67, 76, 73, 80, 83, 128, 80, 65, 80, 69, 82, 67, 76, 73, 80,
-    128, 80, 65, 80, 69, 82, 128, 80, 65, 80, 69, 210, 80, 65, 80, 128, 80,
-    65, 208, 80, 65, 207, 80, 65, 78, 89, 85, 75, 85, 128, 80, 65, 78, 89,
-    73, 75, 85, 128, 80, 65, 78, 89, 69, 67, 69, 75, 128, 80, 65, 78, 89, 65,
-    78, 71, 71, 65, 128, 80, 65, 78, 89, 65, 75, 82, 65, 128, 80, 65, 78, 84,
-    73, 128, 80, 65, 78, 84, 201, 80, 65, 78, 83, 73, 79, 83, 45, 80, 73, 69,
-    85, 80, 128, 80, 65, 78, 83, 73, 79, 83, 45, 75, 65, 80, 89, 69, 79, 85,
-    78, 80, 73, 69, 85, 80, 128, 80, 65, 78, 79, 78, 71, 79, 78, 65, 78, 128,
-    80, 65, 78, 79, 76, 79, 78, 71, 128, 80, 65, 78, 71, 87, 73, 83, 65, 68,
-    128, 80, 65, 78, 71, 82, 65, 78, 71, 75, 69, 80, 128, 80, 65, 78, 71, 79,
-    76, 65, 84, 128, 80, 65, 78, 71, 76, 79, 78, 71, 128, 80, 65, 78, 71, 76,
-    65, 89, 65, 82, 128, 80, 65, 78, 71, 75, 79, 78, 128, 80, 65, 78, 71, 75,
-    65, 84, 128, 80, 65, 78, 71, 72, 85, 76, 85, 128, 80, 65, 78, 71, 128,
-    80, 65, 78, 69, 85, 76, 69, 85, 78, 71, 128, 80, 65, 78, 68, 193, 80, 65,
-    78, 67, 65, 75, 69, 83, 128, 80, 65, 78, 65, 77, 128, 80, 65, 78, 65, 69,
-    76, 65, 69, 78, 71, 128, 80, 65, 78, 128, 80, 65, 206, 80, 65, 77, 85,
-    78, 71, 75, 65, 72, 128, 80, 65, 77, 85, 68, 80, 79, 68, 128, 80, 65, 77,
-    83, 72, 65, 69, 128, 80, 65, 77, 80, 72, 89, 76, 73, 65, 206, 80, 65, 77,
-    73, 78, 71, 75, 65, 76, 128, 80, 65, 77, 69, 80, 69, 84, 128, 80, 65, 77,
-    69, 78, 69, 78, 71, 128, 80, 65, 77, 65, 68, 65, 128, 80, 65, 77, 65, 68,
-    193, 80, 65, 77, 65, 65, 69, 72, 128, 80, 65, 76, 85, 84, 65, 128, 80,
-    65, 76, 79, 67, 72, 75, 65, 128, 80, 65, 76, 77, 89, 82, 69, 78, 197, 80,
-    65, 76, 77, 211, 80, 65, 76, 77, 128, 80, 65, 76, 205, 80, 65, 76, 76,
-    65, 87, 65, 128, 80, 65, 76, 76, 65, 83, 128, 80, 65, 76, 75, 65, 128,
-    80, 65, 76, 201, 80, 65, 76, 69, 84, 84, 69, 128, 80, 65, 76, 65, 85, 78,
-    199, 80, 65, 76, 65, 84, 65, 76, 73, 90, 69, 196, 80, 65, 76, 65, 84, 65,
-    76, 73, 90, 65, 84, 73, 79, 78, 128, 80, 65, 76, 65, 84, 65, 204, 80, 65,
-    75, 80, 65, 203, 80, 65, 73, 89, 65, 78, 78, 79, 73, 128, 80, 65, 73, 82,
-    84, 72, 82, 65, 128, 80, 65, 73, 82, 69, 196, 80, 65, 73, 78, 84, 66, 82,
-    85, 83, 72, 128, 80, 65, 73, 128, 80, 65, 72, 76, 65, 86, 201, 80, 65,
-    72, 128, 80, 65, 71, 79, 68, 65, 128, 80, 65, 71, 69, 83, 128, 80, 65,
-    71, 69, 82, 128, 80, 65, 71, 197, 80, 65, 68, 77, 193, 80, 65, 68, 68,
-    76, 197, 80, 65, 68, 68, 73, 78, 199, 80, 65, 68, 193, 80, 65, 68, 128,
-    80, 65, 67, 75, 73, 78, 71, 128, 80, 65, 67, 75, 65, 71, 69, 128, 80, 65,
-    65, 84, 85, 128, 80, 65, 65, 83, 69, 78, 84, 79, 128, 80, 65, 65, 82, 65,
-    77, 128, 80, 65, 65, 82, 65, 69, 128, 80, 65, 65, 77, 128, 80, 65, 65,
-    73, 128, 80, 65, 65, 45, 80, 73, 76, 76, 65, 128, 80, 65, 65, 128, 80,
-    50, 128, 80, 48, 49, 49, 128, 80, 48, 49, 48, 128, 80, 48, 48, 57, 128,
-    80, 48, 48, 56, 128, 80, 48, 48, 55, 128, 80, 48, 48, 54, 128, 80, 48,
-    48, 53, 128, 80, 48, 48, 52, 128, 80, 48, 48, 51, 65, 128, 80, 48, 48,
-    51, 128, 80, 48, 48, 50, 128, 80, 48, 48, 49, 65, 128, 80, 48, 48, 49,
-    128, 79, 90, 128, 79, 89, 83, 84, 69, 82, 128, 79, 89, 82, 65, 78, 73,
-    83, 77, 193, 79, 89, 65, 78, 78, 65, 128, 79, 88, 73, 65, 128, 79, 88,
-    73, 193, 79, 88, 69, 73, 65, 201, 79, 88, 69, 73, 193, 79, 87, 76, 128,
-    79, 86, 69, 82, 83, 84, 82, 85, 67, 203, 79, 86, 69, 82, 82, 73, 68, 69,
-    128, 79, 86, 69, 82, 76, 79, 78, 199, 79, 86, 69, 82, 76, 73, 78, 69,
-    128, 79, 86, 69, 82, 76, 65, 89, 128, 79, 86, 69, 82, 76, 65, 217, 79,
-    86, 69, 82, 76, 65, 80, 80, 73, 78, 199, 79, 86, 69, 82, 76, 65, 80, 128,
-    79, 86, 69, 82, 76, 65, 73, 68, 128, 79, 86, 69, 82, 76, 65, 73, 196, 79,
-    86, 69, 82, 72, 69, 65, 84, 69, 196, 79, 86, 69, 82, 66, 65, 82, 128, 79,
-    86, 65, 76, 128, 79, 86, 65, 204, 79, 85, 84, 76, 73, 78, 69, 196, 79,
-    85, 84, 76, 73, 78, 69, 128, 79, 85, 84, 69, 210, 79, 85, 84, 66, 79,
-    216, 79, 85, 78, 75, 73, 193, 79, 85, 78, 67, 69, 128, 79, 85, 78, 67,
-    197, 79, 84, 85, 128, 79, 84, 84, 79, 77, 65, 206, 79, 84, 84, 69, 82,
-    128, 79, 84, 84, 65, 86, 193, 79, 84, 84, 128, 79, 84, 83, 69, 67, 72,
-    75, 65, 128, 79, 84, 72, 69, 82, 211, 79, 84, 72, 69, 210, 79, 84, 72,
-    65, 76, 65, 206, 79, 84, 72, 65, 76, 128, 79, 83, 79, 75, 65, 128, 79,
-    83, 79, 75, 193, 79, 83, 77, 65, 78, 89, 193, 79, 83, 67, 128, 79, 83,
-    65, 71, 197, 79, 82, 84, 72, 79, 71, 79, 78, 65, 204, 79, 82, 84, 72, 79,
-    68, 79, 216, 79, 82, 78, 65, 84, 197, 79, 82, 78, 65, 77, 69, 78, 84, 83,
-    128, 79, 82, 78, 65, 77, 69, 78, 84, 128, 79, 82, 78, 65, 77, 69, 78,
-    212, 79, 82, 75, 72, 79, 206, 79, 82, 73, 89, 193, 79, 82, 73, 71, 73,
-    78, 65, 204, 79, 82, 73, 71, 73, 78, 128, 79, 82, 69, 45, 50, 128, 79,
-    82, 68, 73, 78, 65, 204, 79, 82, 68, 69, 210, 79, 82, 67, 85, 83, 128,
-    79, 82, 67, 72, 73, 68, 128, 79, 82, 65, 78, 71, 85, 84, 65, 78, 128, 79,
-    82, 65, 78, 71, 197, 79, 80, 84, 73, 79, 206, 79, 80, 84, 73, 67, 65,
-    204, 79, 80, 80, 82, 69, 83, 83, 73, 79, 78, 128, 79, 80, 80, 79, 83, 73,
-    84, 73, 79, 78, 128, 79, 80, 80, 79, 83, 73, 78, 199, 79, 80, 80, 79, 83,
-    69, 128, 79, 80, 72, 73, 85, 67, 72, 85, 83, 128, 79, 80, 69, 82, 65, 84,
-    79, 82, 128, 79, 80, 69, 82, 65, 84, 79, 210, 79, 80, 69, 82, 65, 84, 73,
-    78, 199, 79, 80, 69, 78, 73, 78, 199, 79, 80, 69, 78, 45, 80, 128, 79,
-    80, 69, 78, 45, 79, 85, 84, 76, 73, 78, 69, 196, 79, 80, 69, 78, 45, 79,
-    128, 79, 80, 69, 78, 45, 207, 79, 80, 69, 78, 45, 72, 69, 65, 68, 69,
-    196, 79, 80, 69, 78, 45, 67, 73, 82, 67, 85, 73, 84, 45, 79, 85, 84, 80,
-    85, 212, 79, 80, 69, 78, 128, 79, 80, 69, 206, 79, 79, 90, 69, 128, 79,
-    79, 89, 65, 78, 78, 65, 128, 79, 79, 85, 128, 79, 79, 77, 85, 128, 79,
-    79, 72, 128, 79, 79, 69, 128, 79, 79, 66, 79, 79, 70, 73, 76, 73, 128,
-    79, 78, 85, 128, 79, 78, 83, 85, 128, 79, 78, 78, 128, 79, 78, 75, 65,
-    82, 128, 79, 78, 73, 79, 78, 128, 79, 78, 69, 83, 69, 76, 70, 128, 79,
-    78, 69, 45, 87, 65, 217, 79, 78, 69, 45, 84, 72, 73, 82, 84, 89, 128, 79,
-    78, 69, 45, 80, 73, 69, 67, 197, 79, 78, 69, 45, 76, 73, 78, 197, 79, 78,
-    69, 45, 72, 85, 78, 68, 82, 69, 68, 45, 65, 78, 68, 45, 83, 73, 88, 84,
-    73, 69, 84, 72, 128, 79, 78, 67, 79, 77, 73, 78, 199, 79, 78, 65, 80,
-    128, 79, 78, 45, 79, 70, 198, 79, 77, 73, 83, 83, 73, 79, 206, 79, 77,
-    73, 67, 82, 79, 78, 128, 79, 77, 73, 67, 82, 79, 206, 79, 77, 69, 84,
-    128, 79, 77, 69, 71, 65, 128, 79, 77, 69, 71, 193, 79, 77, 65, 76, 79,
-    78, 128, 79, 76, 73, 86, 69, 128, 79, 76, 73, 71, 79, 206, 79, 76, 68,
-    128, 79, 75, 84, 207, 79, 75, 65, 82, 65, 128, 79, 75, 65, 82, 193, 79,
-    74, 79, 68, 128, 79, 74, 73, 66, 87, 65, 217, 79, 74, 69, 79, 78, 128,
-    79, 73, 78, 128, 79, 73, 76, 128, 79, 73, 204, 79, 72, 77, 128, 79, 72,
-    205, 79, 71, 82, 69, 128, 79, 71, 79, 78, 69, 75, 128, 79, 71, 79, 78,
-    69, 203, 79, 71, 72, 65, 205, 79, 70, 70, 73, 67, 69, 82, 128, 79, 70,
-    70, 73, 67, 69, 128, 79, 70, 70, 73, 67, 197, 79, 70, 70, 128, 79, 69,
-    89, 128, 79, 69, 82, 128, 79, 69, 75, 128, 79, 69, 69, 128, 79, 68, 69,
-    78, 128, 79, 68, 68, 128, 79, 68, 196, 79, 67, 84, 79, 80, 85, 83, 128,
-    79, 67, 84, 79, 66, 69, 82, 128, 79, 67, 84, 69, 212, 79, 67, 84, 65, 71,
-    79, 78, 65, 204, 79, 67, 84, 65, 71, 79, 78, 128, 79, 67, 210, 79, 67,
-    76, 79, 67, 75, 128, 79, 67, 72, 75, 79, 77, 128, 79, 67, 67, 85, 76, 84,
-    65, 84, 73, 79, 78, 128, 79, 67, 67, 76, 85, 83, 73, 79, 78, 128, 79, 66,
-    83, 84, 82, 85, 67, 84, 73, 79, 78, 128, 79, 66, 83, 69, 82, 86, 69, 210,
-    79, 66, 79, 76, 211, 79, 66, 79, 204, 79, 66, 79, 70, 73, 76, 73, 128,
-    79, 66, 76, 73, 81, 85, 197, 79, 66, 76, 65, 75, 79, 128, 79, 66, 76, 65,
-    67, 72, 75, 79, 128, 79, 66, 74, 69, 67, 212, 79, 66, 69, 76, 85, 83,
-    128, 79, 66, 69, 76, 79, 83, 128, 79, 66, 128, 79, 65, 89, 128, 79, 65,
-    75, 128, 79, 65, 66, 79, 65, 70, 73, 76, 73, 128, 79, 193, 79, 48, 53,
-    49, 128, 79, 48, 53, 48, 66, 128, 79, 48, 53, 48, 65, 128, 79, 48, 53,
-    48, 128, 79, 48, 52, 57, 128, 79, 48, 52, 56, 128, 79, 48, 52, 55, 128,
-    79, 48, 52, 54, 128, 79, 48, 52, 53, 128, 79, 48, 52, 52, 128, 79, 48,
-    52, 51, 128, 79, 48, 52, 50, 128, 79, 48, 52, 49, 128, 79, 48, 52, 48,
-    128, 79, 48, 51, 57, 128, 79, 48, 51, 56, 128, 79, 48, 51, 55, 128, 79,
-    48, 51, 54, 68, 128, 79, 48, 51, 54, 67, 128, 79, 48, 51, 54, 66, 128,
-    79, 48, 51, 54, 65, 128, 79, 48, 51, 54, 128, 79, 48, 51, 53, 128, 79,
-    48, 51, 52, 128, 79, 48, 51, 51, 65, 128, 79, 48, 51, 51, 128, 79, 48,
-    51, 50, 128, 79, 48, 51, 49, 128, 79, 48, 51, 48, 65, 128, 79, 48, 51,
-    48, 128, 79, 48, 50, 57, 65, 128, 79, 48, 50, 57, 128, 79, 48, 50, 56,
-    128, 79, 48, 50, 55, 128, 79, 48, 50, 54, 128, 79, 48, 50, 53, 65, 128,
-    79, 48, 50, 53, 128, 79, 48, 50, 52, 65, 128, 79, 48, 50, 52, 128, 79,
-    48, 50, 51, 128, 79, 48, 50, 50, 128, 79, 48, 50, 49, 128, 79, 48, 50,
-    48, 65, 128, 79, 48, 50, 48, 128, 79, 48, 49, 57, 65, 128, 79, 48, 49,
-    57, 128, 79, 48, 49, 56, 128, 79, 48, 49, 55, 128, 79, 48, 49, 54, 128,
-    79, 48, 49, 53, 128, 79, 48, 49, 52, 128, 79, 48, 49, 51, 128, 79, 48,
-    49, 50, 128, 79, 48, 49, 49, 128, 79, 48, 49, 48, 67, 128, 79, 48, 49,
-    48, 66, 128, 79, 48, 49, 48, 65, 128, 79, 48, 49, 48, 128, 79, 48, 48,
-    57, 128, 79, 48, 48, 56, 128, 79, 48, 48, 55, 128, 79, 48, 48, 54, 70,
-    128, 79, 48, 48, 54, 69, 128, 79, 48, 48, 54, 68, 128, 79, 48, 48, 54,
-    67, 128, 79, 48, 48, 54, 66, 128, 79, 48, 48, 54, 65, 128, 79, 48, 48,
-    54, 128, 79, 48, 48, 53, 65, 128, 79, 48, 48, 53, 128, 79, 48, 48, 52,
-    128, 79, 48, 48, 51, 128, 79, 48, 48, 50, 128, 79, 48, 48, 49, 65, 128,
-    79, 48, 48, 49, 128, 79, 45, 89, 69, 128, 79, 45, 79, 45, 73, 128, 79,
-    45, 69, 128, 78, 90, 89, 88, 128, 78, 90, 89, 84, 128, 78, 90, 89, 82,
-    88, 128, 78, 90, 89, 82, 128, 78, 90, 89, 80, 128, 78, 90, 89, 128, 78,
-    90, 85, 88, 128, 78, 90, 85, 82, 88, 128, 78, 90, 85, 82, 128, 78, 90,
-    85, 81, 128, 78, 90, 85, 80, 128, 78, 90, 85, 79, 88, 128, 78, 90, 85,
-    79, 128, 78, 90, 85, 206, 78, 90, 85, 128, 78, 90, 79, 88, 128, 78, 90,
-    79, 80, 128, 78, 90, 73, 88, 128, 78, 90, 73, 84, 128, 78, 90, 73, 80,
-    128, 78, 90, 73, 69, 88, 128, 78, 90, 73, 69, 80, 128, 78, 90, 73, 69,
-    128, 78, 90, 73, 128, 78, 90, 69, 88, 128, 78, 90, 69, 85, 77, 128, 78,
-    90, 69, 128, 78, 90, 65, 88, 128, 78, 90, 65, 84, 128, 78, 90, 65, 81,
-    128, 78, 90, 65, 80, 128, 78, 90, 65, 128, 78, 90, 193, 78, 89, 87, 65,
-    128, 78, 89, 85, 88, 128, 78, 89, 85, 85, 128, 78, 89, 85, 84, 128, 78,
-    89, 85, 80, 128, 78, 89, 85, 79, 88, 128, 78, 89, 85, 79, 80, 128, 78,
-    89, 85, 79, 128, 78, 89, 85, 78, 128, 78, 89, 85, 69, 128, 78, 89, 85,
-    128, 78, 89, 79, 88, 128, 78, 89, 79, 84, 128, 78, 89, 79, 80, 128, 78,
-    89, 79, 79, 128, 78, 89, 79, 78, 128, 78, 89, 79, 65, 128, 78, 89, 79,
-    128, 78, 89, 74, 65, 128, 78, 89, 73, 88, 128, 78, 89, 73, 84, 128, 78,
-    89, 73, 212, 78, 89, 73, 211, 78, 89, 73, 210, 78, 89, 73, 80, 128, 78,
-    89, 73, 78, 45, 68, 79, 128, 78, 89, 73, 78, 128, 78, 89, 73, 73, 128,
-    78, 89, 73, 69, 88, 128, 78, 89, 73, 69, 84, 128, 78, 89, 73, 69, 80,
-    128, 78, 89, 73, 69, 128, 78, 89, 73, 65, 75, 69, 78, 199, 78, 89, 73,
-    128, 78, 89, 201, 78, 89, 72, 65, 128, 78, 89, 69, 84, 128, 78, 89, 69,
-    212, 78, 89, 69, 78, 128, 78, 89, 69, 72, 128, 78, 89, 69, 200, 78, 89,
-    69, 69, 128, 78, 89, 69, 128, 78, 89, 196, 78, 89, 67, 65, 128, 78, 89,
-    65, 85, 128, 78, 89, 65, 74, 128, 78, 89, 65, 73, 128, 78, 89, 65, 72,
-    128, 78, 89, 65, 69, 77, 65, 69, 128, 78, 89, 65, 65, 128, 78, 87, 79,
-    79, 128, 78, 87, 79, 128, 78, 87, 73, 73, 128, 78, 87, 73, 128, 78, 87,
-    69, 128, 78, 87, 65, 65, 128, 78, 87, 65, 128, 78, 87, 128, 78, 86, 128,
-    78, 85, 88, 128, 78, 85, 85, 78, 128, 78, 85, 85, 128, 78, 85, 84, 73,
-    76, 76, 85, 128, 78, 85, 84, 128, 78, 85, 212, 78, 85, 82, 88, 128, 78,
-    85, 82, 128, 78, 85, 80, 128, 78, 85, 79, 88, 128, 78, 85, 79, 80, 128,
-    78, 85, 79, 128, 78, 85, 78, 85, 90, 128, 78, 85, 78, 85, 218, 78, 85,
-    78, 71, 128, 78, 85, 78, 65, 86, 85, 212, 78, 85, 78, 65, 86, 73, 203,
-    78, 85, 78, 128, 78, 85, 206, 78, 85, 77, 69, 82, 207, 78, 85, 77, 69,
-    82, 65, 84, 79, 210, 78, 85, 77, 69, 82, 65, 204, 78, 85, 77, 66, 69, 82,
-    83, 128, 78, 85, 77, 66, 69, 82, 128, 78, 85, 77, 128, 78, 85, 76, 76,
-    128, 78, 85, 76, 204, 78, 85, 76, 128, 78, 85, 75, 84, 65, 128, 78, 85,
-    75, 84, 193, 78, 85, 69, 78, 71, 128, 78, 85, 69, 128, 78, 85, 66, 73,
-    65, 206, 78, 85, 65, 69, 128, 78, 85, 49, 49, 128, 78, 85, 49, 177, 78,
-    85, 48, 50, 50, 65, 128, 78, 85, 48, 50, 50, 128, 78, 85, 48, 50, 49,
-    128, 78, 85, 48, 50, 48, 128, 78, 85, 48, 49, 57, 128, 78, 85, 48, 49,
-    56, 65, 128, 78, 85, 48, 49, 56, 128, 78, 85, 48, 49, 55, 128, 78, 85,
-    48, 49, 54, 128, 78, 85, 48, 49, 53, 128, 78, 85, 48, 49, 52, 128, 78,
-    85, 48, 49, 51, 128, 78, 85, 48, 49, 50, 128, 78, 85, 48, 49, 49, 65,
-    128, 78, 85, 48, 49, 49, 128, 78, 85, 48, 49, 48, 65, 128, 78, 85, 48,
-    49, 48, 128, 78, 85, 48, 48, 57, 128, 78, 85, 48, 48, 56, 128, 78, 85,
-    48, 48, 55, 128, 78, 85, 48, 48, 54, 128, 78, 85, 48, 48, 53, 128, 78,
-    85, 48, 48, 52, 128, 78, 85, 48, 48, 51, 128, 78, 85, 48, 48, 50, 128,
-    78, 85, 48, 48, 49, 128, 78, 85, 45, 51, 128, 78, 85, 45, 50, 128, 78,
-    85, 45, 49, 128, 78, 84, 88, 73, 86, 128, 78, 84, 88, 65, 128, 78, 84,
-    85, 85, 128, 78, 84, 85, 77, 128, 78, 84, 85, 74, 128, 78, 84, 213, 78,
-    84, 83, 65, 85, 128, 78, 84, 83, 65, 128, 78, 84, 79, 81, 80, 69, 78,
-    128, 78, 84, 79, 71, 128, 78, 84, 79, 199, 78, 84, 73, 69, 197, 78, 84,
-    72, 65, 85, 128, 78, 84, 69, 85, 78, 71, 66, 65, 128, 78, 84, 69, 85, 77,
-    128, 78, 84, 69, 78, 128, 78, 84, 69, 69, 128, 78, 84, 65, 80, 128, 78,
-    84, 65, 208, 78, 84, 65, 65, 128, 78, 84, 65, 128, 78, 83, 85, 79, 212,
-    78, 83, 85, 78, 128, 78, 83, 85, 77, 128, 78, 83, 79, 77, 128, 78, 83,
-    73, 69, 69, 84, 128, 78, 83, 73, 69, 69, 80, 128, 78, 83, 73, 69, 69,
-    128, 78, 83, 72, 85, 84, 128, 78, 83, 72, 85, 212, 78, 83, 72, 85, 79,
-    80, 128, 78, 83, 72, 85, 69, 128, 78, 83, 72, 73, 69, 69, 128, 78, 83,
-    72, 69, 69, 128, 78, 83, 72, 65, 81, 128, 78, 83, 72, 65, 128, 78, 83,
-    69, 85, 65, 69, 78, 128, 78, 83, 69, 78, 128, 78, 83, 65, 128, 78, 82,
-    89, 88, 128, 78, 82, 89, 84, 128, 78, 82, 89, 82, 88, 128, 78, 82, 89,
-    82, 128, 78, 82, 89, 80, 128, 78, 82, 89, 128, 78, 82, 85, 88, 128, 78,
-    82, 85, 84, 128, 78, 82, 85, 82, 88, 128, 78, 82, 85, 82, 128, 78, 82,
-    85, 80, 128, 78, 82, 85, 65, 128, 78, 82, 85, 128, 78, 82, 79, 88, 128,
-    78, 82, 79, 80, 128, 78, 82, 79, 128, 78, 82, 69, 88, 128, 78, 82, 69,
-    84, 128, 78, 82, 69, 211, 78, 82, 69, 80, 128, 78, 82, 69, 128, 78, 82,
-    65, 88, 128, 78, 82, 65, 84, 128, 78, 82, 65, 80, 128, 78, 82, 65, 128,
-    78, 81, 73, 71, 128, 78, 81, 65, 128, 78, 80, 76, 65, 128, 78, 80, 65,
-    128, 78, 79, 90, 72, 75, 65, 128, 78, 79, 89, 128, 78, 79, 88, 128, 78,
-    79, 87, 67, 128, 78, 79, 86, 73, 76, 69, 128, 78, 79, 86, 69, 77, 66, 69,
-    82, 128, 78, 79, 84, 84, 79, 128, 78, 79, 84, 69, 83, 128, 78, 79, 84,
-    69, 72, 69, 65, 68, 128, 78, 79, 84, 69, 72, 69, 65, 196, 78, 79, 84, 69,
-    66, 79, 79, 75, 128, 78, 79, 84, 69, 66, 79, 79, 203, 78, 79, 84, 69,
-    128, 78, 79, 84, 197, 78, 79, 84, 67, 72, 69, 196, 78, 79, 84, 67, 72,
-    128, 78, 79, 84, 65, 84, 73, 79, 206, 78, 79, 84, 128, 78, 79, 212, 78,
-    79, 83, 69, 128, 78, 79, 83, 197, 78, 79, 82, 84, 72, 87, 69, 83, 212,
-    78, 79, 82, 84, 72, 69, 82, 206, 78, 79, 82, 84, 72, 69, 65, 83, 84, 45,
-    80, 79, 73, 78, 84, 73, 78, 199, 78, 79, 82, 77, 65, 204, 78, 79, 82, 68,
-    73, 195, 78, 79, 210, 78, 79, 80, 128, 78, 79, 79, 78, 85, 128, 78, 79,
-    79, 128, 78, 79, 78, 70, 79, 82, 75, 73, 78, 71, 128, 78, 79, 78, 45, 80,
-    79, 84, 65, 66, 76, 197, 78, 79, 78, 45, 74, 79, 73, 78, 69, 82, 128, 78,
-    79, 78, 45, 66, 82, 69, 65, 75, 73, 78, 199, 78, 79, 78, 128, 78, 79, 77,
-    73, 83, 77, 193, 78, 79, 77, 73, 78, 65, 204, 78, 79, 75, 72, 85, 75,
-    128, 78, 79, 68, 69, 128, 78, 79, 65, 128, 78, 79, 45, 66, 82, 69, 65,
-    203, 78, 79, 45, 53, 128, 78, 79, 45, 52, 128, 78, 79, 45, 51, 128, 78,
-    79, 45, 50, 128, 78, 79, 45, 49, 128, 78, 78, 85, 85, 128, 78, 78, 85,
-    128, 78, 78, 79, 79, 128, 78, 78, 78, 85, 85, 128, 78, 78, 78, 85, 128,
-    78, 78, 78, 79, 79, 128, 78, 78, 78, 79, 128, 78, 78, 78, 73, 73, 128,
-    78, 78, 78, 73, 128, 78, 78, 78, 69, 69, 128, 78, 78, 78, 69, 128, 78,
-    78, 78, 65, 85, 128, 78, 78, 78, 65, 73, 128, 78, 78, 78, 65, 65, 128,
-    78, 78, 78, 65, 128, 78, 78, 78, 128, 78, 78, 72, 65, 128, 78, 78, 71,
-    79, 79, 128, 78, 78, 71, 79, 128, 78, 78, 71, 73, 73, 128, 78, 78, 71,
-    73, 128, 78, 78, 71, 65, 65, 128, 78, 78, 71, 65, 128, 78, 78, 71, 128,
-    78, 78, 66, 83, 80, 128, 78, 77, 128, 78, 76, 65, 85, 128, 78, 76, 48,
-    50, 48, 128, 78, 76, 48, 49, 57, 128, 78, 76, 48, 49, 56, 128, 78, 76,
-    48, 49, 55, 65, 128, 78, 76, 48, 49, 55, 128, 78, 76, 48, 49, 54, 128,
-    78, 76, 48, 49, 53, 128, 78, 76, 48, 49, 52, 128, 78, 76, 48, 49, 51,
-    128, 78, 76, 48, 49, 50, 128, 78, 76, 48, 49, 49, 128, 78, 76, 48, 49,
-    48, 128, 78, 76, 48, 48, 57, 128, 78, 76, 48, 48, 56, 128, 78, 76, 48,
-    48, 55, 128, 78, 76, 48, 48, 54, 128, 78, 76, 48, 48, 53, 65, 128, 78,
-    76, 48, 48, 53, 128, 78, 76, 48, 48, 52, 128, 78, 76, 48, 48, 51, 128,
-    78, 76, 48, 48, 50, 128, 78, 76, 48, 48, 49, 128, 78, 76, 128, 78, 75,
-    79, 77, 128, 78, 75, 207, 78, 75, 73, 78, 68, 73, 128, 78, 75, 65, 85,
-    128, 78, 75, 65, 65, 82, 65, 69, 128, 78, 75, 65, 128, 78, 74, 89, 88,
-    128, 78, 74, 89, 84, 128, 78, 74, 89, 82, 88, 128, 78, 74, 89, 82, 128,
-    78, 74, 89, 80, 128, 78, 74, 89, 128, 78, 74, 85, 88, 128, 78, 74, 85,
-    82, 88, 128, 78, 74, 85, 82, 128, 78, 74, 85, 81, 65, 128, 78, 74, 85,
-    80, 128, 78, 74, 85, 79, 88, 128, 78, 74, 85, 79, 128, 78, 74, 85, 69,
-    81, 128, 78, 74, 85, 65, 69, 128, 78, 74, 85, 128, 78, 74, 79, 88, 128,
-    78, 74, 79, 84, 128, 78, 74, 79, 80, 128, 78, 74, 79, 79, 128, 78, 74,
-    79, 128, 78, 74, 73, 88, 128, 78, 74, 73, 84, 128, 78, 74, 73, 80, 128,
-    78, 74, 73, 69, 88, 128, 78, 74, 73, 69, 84, 128, 78, 74, 73, 69, 80,
-    128, 78, 74, 73, 69, 69, 128, 78, 74, 73, 69, 128, 78, 74, 73, 128, 78,
-    74, 201, 78, 74, 69, 85, 88, 128, 78, 74, 69, 85, 84, 128, 78, 74, 69,
-    85, 65, 69, 78, 65, 128, 78, 74, 69, 85, 65, 69, 77, 128, 78, 74, 69, 69,
-    69, 69, 128, 78, 74, 69, 69, 128, 78, 74, 69, 197, 78, 74, 69, 128, 78,
-    74, 65, 81, 128, 78, 74, 65, 80, 128, 78, 74, 65, 69, 77, 76, 73, 128,
-    78, 74, 65, 69, 77, 128, 78, 74, 65, 65, 128, 78, 73, 90, 75, 207, 78,
-    73, 88, 128, 78, 73, 84, 82, 69, 128, 78, 73, 83, 65, 71, 128, 78, 73,
-    82, 85, 71, 85, 128, 78, 73, 80, 128, 78, 73, 78, 84, 72, 128, 78, 73,
-    78, 74, 65, 128, 78, 73, 78, 69, 84, 89, 128, 78, 73, 78, 69, 84, 217,
-    78, 73, 78, 69, 84, 69, 69, 78, 128, 78, 73, 78, 69, 84, 69, 69, 206, 78,
-    73, 78, 69, 45, 84, 72, 73, 82, 84, 89, 128, 78, 73, 78, 69, 45, 76, 73,
-    75, 197, 78, 73, 78, 197, 78, 73, 78, 68, 65, 50, 128, 78, 73, 78, 68,
-    65, 178, 78, 73, 78, 57, 128, 78, 73, 78, 128, 78, 73, 77, 128, 78, 73,
-    205, 78, 73, 75, 79, 76, 83, 66, 85, 82, 199, 78, 73, 75, 72, 65, 72, 73,
-    84, 128, 78, 73, 75, 65, 72, 73, 84, 128, 78, 73, 75, 65, 128, 78, 73,
-    72, 83, 72, 86, 65, 83, 65, 128, 78, 73, 71, 73, 68, 65, 77, 73, 78, 128,
-    78, 73, 71, 73, 68, 65, 69, 83, 72, 128, 78, 73, 71, 72, 84, 128, 78, 73,
-    71, 72, 212, 78, 73, 71, 71, 65, 72, 73, 84, 65, 128, 78, 73, 69, 88,
-    128, 78, 73, 69, 85, 78, 45, 84, 73, 75, 69, 85, 84, 128, 78, 73, 69, 85,
-    78, 45, 84, 72, 73, 69, 85, 84, 72, 128, 78, 73, 69, 85, 78, 45, 83, 73,
-    79, 83, 128, 78, 73, 69, 85, 78, 45, 82, 73, 69, 85, 76, 128, 78, 73, 69,
-    85, 78, 45, 80, 73, 69, 85, 80, 128, 78, 73, 69, 85, 78, 45, 80, 65, 78,
-    83, 73, 79, 83, 128, 78, 73, 69, 85, 78, 45, 75, 73, 89, 69, 79, 75, 128,
-    78, 73, 69, 85, 78, 45, 72, 73, 69, 85, 72, 128, 78, 73, 69, 85, 78, 45,
-    67, 73, 69, 85, 67, 128, 78, 73, 69, 85, 78, 45, 67, 72, 73, 69, 85, 67,
-    72, 128, 78, 73, 69, 85, 206, 78, 73, 69, 80, 128, 78, 73, 69, 128, 78,
-    73, 66, 128, 78, 73, 65, 128, 78, 73, 50, 128, 78, 73, 45, 84, 69, 128,
-    78, 73, 45, 55, 128, 78, 73, 45, 54, 128, 78, 73, 45, 53, 128, 78, 73,
-    45, 52, 128, 78, 73, 45, 51, 128, 78, 73, 45, 50, 128, 78, 73, 45, 49,
-    128, 78, 72, 85, 69, 128, 78, 72, 74, 65, 128, 78, 72, 65, 89, 128, 78,
-    72, 128, 78, 71, 89, 69, 128, 78, 71, 86, 69, 128, 78, 71, 85, 85, 128,
-    78, 71, 85, 79, 88, 128, 78, 71, 85, 79, 84, 128, 78, 71, 85, 79, 128,
-    78, 71, 85, 65, 78, 128, 78, 71, 85, 65, 69, 84, 128, 78, 71, 85, 65, 69,
-    128, 78, 71, 79, 88, 128, 78, 71, 79, 85, 128, 78, 71, 79, 213, 78, 71,
-    79, 84, 128, 78, 71, 79, 81, 128, 78, 71, 79, 80, 128, 78, 71, 79, 78,
-    128, 78, 71, 79, 77, 128, 78, 71, 79, 69, 72, 128, 78, 71, 79, 69, 200,
-    78, 71, 207, 78, 71, 75, 89, 69, 69, 128, 78, 71, 75, 87, 65, 69, 78,
-    128, 78, 71, 75, 85, 80, 128, 78, 71, 75, 85, 78, 128, 78, 71, 75, 85,
-    77, 128, 78, 71, 75, 85, 69, 78, 90, 69, 85, 77, 128, 78, 71, 75, 85,
-    197, 78, 71, 75, 73, 78, 68, 201, 78, 71, 75, 73, 69, 69, 128, 78, 71,
-    75, 69, 85, 88, 128, 78, 71, 75, 69, 85, 82, 73, 128, 78, 71, 75, 69, 85,
-    65, 69, 81, 128, 78, 71, 75, 69, 85, 65, 69, 77, 128, 78, 71, 75, 65, 81,
-    128, 78, 71, 75, 65, 80, 128, 78, 71, 75, 65, 65, 77, 73, 128, 78, 71,
-    75, 65, 128, 78, 71, 73, 69, 88, 128, 78, 71, 73, 69, 80, 128, 78, 71,
-    73, 69, 128, 78, 71, 72, 65, 128, 78, 71, 71, 87, 65, 69, 78, 128, 78,
-    71, 71, 85, 82, 65, 69, 128, 78, 71, 71, 85, 80, 128, 78, 71, 71, 85, 79,
-    81, 128, 78, 71, 71, 85, 79, 209, 78, 71, 71, 85, 79, 78, 128, 78, 71,
-    71, 85, 79, 77, 128, 78, 71, 71, 85, 77, 128, 78, 71, 71, 85, 69, 69, 84,
-    128, 78, 71, 71, 85, 65, 69, 83, 72, 65, 197, 78, 71, 71, 85, 65, 69,
-    206, 78, 71, 71, 85, 65, 128, 78, 71, 71, 85, 128, 78, 71, 71, 79, 79,
-    128, 78, 71, 71, 79, 128, 78, 71, 71, 73, 128, 78, 71, 71, 69, 85, 88,
-    128, 78, 71, 71, 69, 85, 65, 69, 84, 128, 78, 71, 71, 69, 85, 65, 69,
-    128, 78, 71, 71, 69, 213, 78, 71, 71, 69, 78, 128, 78, 71, 71, 69, 69,
-    84, 128, 78, 71, 71, 69, 69, 69, 69, 128, 78, 71, 71, 69, 69, 128, 78,
-    71, 71, 69, 128, 78, 71, 71, 65, 80, 128, 78, 71, 71, 65, 65, 77, 65, 69,
-    128, 78, 71, 71, 65, 65, 77, 128, 78, 71, 71, 65, 65, 128, 78, 71, 71,
-    128, 78, 71, 69, 88, 128, 78, 71, 69, 85, 82, 69, 85, 84, 128, 78, 71,
-    69, 80, 128, 78, 71, 69, 78, 128, 78, 71, 69, 69, 128, 78, 71, 69, 65,
-    68, 65, 76, 128, 78, 71, 65, 88, 128, 78, 71, 65, 85, 128, 78, 71, 65,
-    84, 128, 78, 71, 65, 211, 78, 71, 65, 81, 128, 78, 71, 65, 80, 128, 78,
-    71, 65, 78, 71, 85, 128, 78, 71, 65, 78, 128, 78, 71, 65, 73, 128, 78,
-    71, 65, 72, 128, 78, 71, 65, 65, 73, 128, 78, 71, 193, 78, 70, 128, 78,
-    69, 88, 212, 78, 69, 88, 128, 78, 69, 87, 83, 80, 65, 80, 69, 82, 128,
-    78, 69, 87, 76, 73, 78, 69, 128, 78, 69, 87, 76, 73, 78, 197, 78, 69, 87,
-    193, 78, 69, 87, 128, 78, 69, 215, 78, 69, 85, 84, 82, 65, 76, 128, 78,
-    69, 85, 84, 82, 65, 204, 78, 69, 85, 84, 69, 82, 128, 78, 69, 84, 87, 79,
-    82, 75, 69, 196, 78, 69, 212, 78, 69, 83, 84, 73, 78, 199, 78, 69, 83,
-    84, 69, 196, 78, 69, 83, 84, 128, 78, 69, 83, 212, 78, 69, 83, 83, 85,
-    83, 128, 78, 69, 82, 196, 78, 69, 81, 85, 68, 65, 65, 128, 78, 69, 80,
-    84, 85, 78, 69, 128, 78, 69, 80, 84, 85, 78, 197, 78, 69, 80, 79, 83, 84,
-    79, 89, 65, 78, 78, 65, 89, 65, 128, 78, 69, 80, 128, 78, 69, 79, 128,
-    78, 69, 207, 78, 69, 78, 79, 69, 128, 78, 69, 78, 65, 78, 79, 128, 78,
-    69, 78, 128, 78, 69, 77, 75, 65, 128, 78, 69, 76, 128, 78, 69, 73, 84,
-    72, 69, 210, 78, 69, 71, 65, 84, 73, 86, 197, 78, 69, 71, 65, 84, 73, 79,
-    206, 78, 69, 71, 65, 84, 69, 196, 78, 69, 69, 68, 76, 69, 128, 78, 69,
-    67, 75, 84, 73, 69, 128, 78, 69, 67, 75, 128, 78, 69, 66, 69, 78, 83, 84,
-    73, 77, 77, 69, 128, 78, 69, 45, 75, 79, 128, 78, 68, 85, 88, 128, 78,
-    68, 85, 84, 128, 78, 68, 85, 82, 88, 128, 78, 68, 85, 82, 128, 78, 68,
-    85, 80, 128, 78, 68, 85, 78, 128, 78, 68, 213, 78, 68, 79, 88, 128, 78,
-    68, 79, 84, 128, 78, 68, 79, 80, 128, 78, 68, 79, 79, 128, 78, 68, 79,
-    78, 128, 78, 68, 79, 77, 66, 85, 128, 78, 68, 79, 76, 197, 78, 68, 73,
-    88, 128, 78, 68, 73, 84, 128, 78, 68, 73, 81, 128, 78, 68, 73, 80, 128,
-    78, 68, 73, 69, 88, 128, 78, 68, 73, 69, 128, 78, 68, 73, 68, 65, 128,
-    78, 68, 73, 65, 81, 128, 78, 68, 69, 88, 128, 78, 68, 69, 85, 88, 128,
-    78, 68, 69, 85, 84, 128, 78, 68, 69, 85, 65, 69, 82, 69, 69, 128, 78, 68,
-    69, 80, 128, 78, 68, 69, 69, 128, 78, 68, 69, 128, 78, 68, 65, 88, 128,
-    78, 68, 65, 84, 128, 78, 68, 65, 80, 128, 78, 68, 65, 77, 128, 78, 68,
-    65, 65, 78, 71, 71, 69, 85, 65, 69, 84, 128, 78, 68, 65, 65, 128, 78, 68,
-    65, 193, 78, 67, 72, 65, 85, 128, 78, 67, 65, 128, 78, 66, 89, 88, 128,
-    78, 66, 89, 84, 128, 78, 66, 89, 82, 88, 128, 78, 66, 89, 82, 128, 78,
-    66, 89, 80, 128, 78, 66, 89, 128, 78, 66, 85, 88, 128, 78, 66, 85, 84,
-    128, 78, 66, 85, 82, 88, 128, 78, 66, 85, 82, 128, 78, 66, 85, 80, 128,
-    78, 66, 85, 128, 78, 66, 79, 88, 128, 78, 66, 79, 84, 128, 78, 66, 79,
-    80, 128, 78, 66, 79, 128, 78, 66, 73, 88, 128, 78, 66, 73, 84, 128, 78,
-    66, 73, 80, 128, 78, 66, 73, 69, 88, 128, 78, 66, 73, 69, 80, 128, 78,
-    66, 73, 69, 128, 78, 66, 73, 128, 78, 66, 72, 128, 78, 66, 65, 88, 128,
-    78, 66, 65, 84, 128, 78, 66, 65, 80, 128, 78, 66, 65, 128, 78, 65, 90,
-    65, 210, 78, 65, 89, 65, 78, 78, 65, 128, 78, 65, 89, 128, 78, 65, 88,
-    73, 65, 206, 78, 65, 88, 128, 78, 65, 85, 84, 72, 83, 128, 78, 65, 85,
-    83, 69, 65, 84, 69, 196, 78, 65, 85, 68, 73, 218, 78, 65, 84, 85, 82, 65,
-    204, 78, 65, 84, 84, 73, 76, 73, 203, 78, 65, 84, 73, 79, 78, 65, 204,
-    78, 65, 83, 75, 65, 80, 201, 78, 65, 83, 72, 73, 128, 78, 65, 83, 65, 76,
-    73, 90, 69, 196, 78, 65, 83, 65, 76, 73, 90, 65, 84, 73, 79, 78, 128, 78,
-    65, 83, 65, 76, 73, 90, 65, 84, 73, 79, 206, 78, 65, 83, 65, 204, 78, 65,
-    82, 82, 79, 215, 78, 65, 82, 128, 78, 65, 81, 128, 78, 65, 79, 211, 78,
-    65, 78, 83, 65, 78, 65, 81, 128, 78, 65, 78, 71, 77, 79, 78, 84, 72, 79,
-    128, 78, 65, 78, 68, 73, 78, 65, 71, 65, 82, 201, 78, 65, 78, 68, 128,
-    78, 65, 78, 65, 128, 78, 65, 77, 69, 128, 78, 65, 77, 197, 78, 65, 77,
-    50, 128, 78, 65, 75, 65, 65, 82, 193, 78, 65, 75, 128, 78, 65, 73, 82,
-    193, 78, 65, 73, 204, 78, 65, 71, 82, 201, 78, 65, 71, 65, 82, 128, 78,
-    65, 71, 65, 128, 78, 65, 71, 193, 78, 65, 71, 128, 78, 65, 199, 78, 65,
-    69, 128, 78, 65, 66, 76, 65, 128, 78, 65, 66, 65, 84, 65, 69, 65, 206,
-    78, 65, 65, 83, 73, 75, 89, 65, 89, 65, 128, 78, 65, 65, 75, 83, 73, 75,
-    89, 65, 89, 65, 128, 78, 65, 65, 73, 128, 78, 65, 193, 78, 65, 52, 128,
-    78, 65, 50, 128, 78, 65, 45, 57, 128, 78, 65, 45, 56, 128, 78, 65, 45,
-    55, 128, 78, 65, 45, 54, 128, 78, 65, 45, 53, 128, 78, 65, 45, 52, 128,
-    78, 65, 45, 51, 128, 78, 65, 45, 50, 128, 78, 65, 45, 49, 128, 78, 48,
-    52, 50, 128, 78, 48, 52, 49, 128, 78, 48, 52, 48, 128, 78, 48, 51, 57,
-    128, 78, 48, 51, 56, 128, 78, 48, 51, 55, 65, 128, 78, 48, 51, 55, 128,
-    78, 48, 51, 54, 128, 78, 48, 51, 53, 65, 128, 78, 48, 51, 53, 128, 78,
-    48, 51, 52, 65, 128, 78, 48, 51, 52, 128, 78, 48, 51, 51, 65, 128, 78,
-    48, 51, 51, 128, 78, 48, 51, 50, 128, 78, 48, 51, 49, 128, 78, 48, 51,
-    48, 128, 78, 48, 50, 57, 128, 78, 48, 50, 56, 128, 78, 48, 50, 55, 128,
-    78, 48, 50, 54, 128, 78, 48, 50, 53, 65, 128, 78, 48, 50, 53, 128, 78,
-    48, 50, 52, 128, 78, 48, 50, 51, 128, 78, 48, 50, 50, 128, 78, 48, 50,
-    49, 128, 78, 48, 50, 48, 128, 78, 48, 49, 57, 128, 78, 48, 49, 56, 66,
-    128, 78, 48, 49, 56, 65, 128, 78, 48, 49, 56, 128, 78, 48, 49, 55, 128,
-    78, 48, 49, 54, 128, 78, 48, 49, 53, 128, 78, 48, 49, 52, 128, 78, 48,
-    49, 51, 128, 78, 48, 49, 50, 128, 78, 48, 49, 49, 128, 78, 48, 49, 48,
-    128, 78, 48, 48, 57, 128, 78, 48, 48, 56, 128, 78, 48, 48, 55, 128, 78,
-    48, 48, 54, 128, 78, 48, 48, 53, 128, 78, 48, 48, 52, 128, 78, 48, 48,
-    51, 128, 78, 48, 48, 50, 128, 78, 48, 48, 49, 128, 78, 45, 77, 85, 45,
-    77, 79, 45, 50, 128, 78, 45, 77, 85, 45, 77, 79, 45, 49, 128, 78, 45, 67,
-    82, 69, 197, 78, 45, 65, 82, 217, 77, 90, 128, 77, 89, 88, 128, 77, 89,
-    84, 128, 77, 89, 83, 76, 73, 84, 69, 128, 77, 89, 80, 128, 77, 89, 65,
-    128, 77, 89, 193, 77, 87, 79, 79, 128, 77, 87, 79, 128, 77, 87, 73, 73,
-    128, 77, 87, 73, 128, 77, 87, 69, 69, 128, 77, 87, 69, 128, 77, 87, 65,
-    65, 128, 77, 87, 65, 128, 77, 87, 128, 77, 215, 77, 86, 83, 128, 77, 86,
-    79, 80, 128, 77, 86, 73, 128, 77, 86, 69, 85, 65, 69, 78, 71, 65, 77,
-    128, 77, 86, 128, 77, 214, 77, 85, 88, 128, 77, 85, 85, 86, 85, 90, 72,
-    65, 75, 75, 85, 128, 77, 85, 85, 83, 73, 75, 65, 84, 79, 65, 78, 128, 77,
-    85, 85, 82, 68, 72, 65, 74, 193, 77, 85, 85, 128, 77, 85, 84, 72, 65, 76,
-    73, 89, 65, 128, 77, 85, 84, 128, 77, 85, 83, 73, 67, 128, 77, 85, 83,
-    73, 195, 77, 85, 83, 72, 82, 79, 79, 77, 128, 77, 85, 83, 72, 51, 128,
-    77, 85, 83, 72, 179, 77, 85, 83, 72, 128, 77, 85, 83, 200, 77, 85, 83,
-    128, 77, 85, 82, 88, 128, 77, 85, 82, 71, 85, 50, 128, 77, 85, 82, 69,
-    128, 77, 85, 82, 68, 65, 128, 77, 85, 82, 68, 193, 77, 85, 82, 128, 77,
-    85, 81, 68, 65, 77, 128, 77, 85, 80, 128, 77, 85, 79, 88, 128, 77, 85,
-    79, 84, 128, 77, 85, 79, 80, 128, 77, 85, 79, 77, 65, 69, 128, 77, 85,
-    79, 128, 77, 85, 78, 83, 85, 66, 128, 77, 85, 78, 68, 65, 82, 201, 77,
-    85, 78, 65, 72, 128, 77, 85, 78, 128, 77, 85, 76, 84, 73, 83, 69, 84,
-    128, 77, 85, 76, 84, 73, 83, 69, 212, 77, 85, 76, 84, 73, 80, 76, 73, 67,
-    65, 84, 73, 79, 78, 128, 77, 85, 76, 84, 73, 80, 76, 73, 67, 65, 84, 73,
-    79, 206, 77, 85, 76, 84, 73, 80, 76, 69, 128, 77, 85, 76, 84, 73, 80, 76,
-    197, 77, 85, 76, 84, 73, 79, 67, 85, 76, 65, 210, 77, 85, 76, 84, 73, 77,
-    65, 80, 128, 77, 85, 76, 84, 201, 77, 85, 76, 84, 65, 78, 201, 77, 85,
-    75, 80, 72, 82, 69, 78, 71, 128, 77, 85, 75, 75, 85, 82, 85, 78, 73, 128,
-    77, 85, 73, 78, 128, 77, 85, 72, 79, 82, 128, 77, 85, 71, 83, 128, 77,
-    85, 71, 128, 77, 85, 199, 77, 85, 69, 78, 128, 77, 85, 69, 128, 77, 85,
-    67, 72, 128, 77, 85, 67, 200, 77, 85, 67, 65, 65, 68, 128, 77, 85, 65,
-    83, 128, 77, 85, 65, 78, 128, 77, 85, 65, 69, 128, 77, 85, 45, 71, 65,
-    65, 72, 76, 65, 193, 77, 85, 45, 52, 128, 77, 85, 45, 51, 128, 77, 85,
-    45, 50, 128, 77, 85, 45, 49, 128, 77, 213, 77, 84, 65, 86, 82, 85, 76,
-    201, 77, 83, 128, 77, 82, 207, 77, 82, 65, 67, 72, 78, 89, 128, 77, 82,
-    65, 67, 72, 78, 79, 84, 73, 75, 72, 65, 89, 65, 128, 77, 82, 65, 67, 72,
-    78, 79, 128, 77, 82, 65, 67, 72, 78, 65, 89, 65, 128, 77, 210, 77, 81,
-    128, 77, 80, 65, 128, 77, 79, 89, 65, 73, 128, 77, 79, 88, 128, 77, 79,
-    86, 73, 197, 77, 79, 86, 69, 211, 77, 79, 86, 69, 77, 69, 78, 84, 45, 87,
-    65, 76, 76, 80, 76, 65, 78, 197, 77, 79, 86, 69, 77, 69, 78, 84, 45, 72,
-    73, 78, 71, 197, 77, 79, 86, 69, 77, 69, 78, 84, 45, 70, 76, 79, 79, 82,
-    80, 76, 65, 78, 197, 77, 79, 86, 69, 77, 69, 78, 84, 45, 68, 73, 65, 71,
-    79, 78, 65, 204, 77, 79, 86, 69, 77, 69, 78, 84, 128, 77, 79, 86, 69, 77,
-    69, 78, 212, 77, 79, 86, 69, 196, 77, 79, 86, 69, 128, 77, 79, 85, 84,
-    72, 128, 77, 79, 85, 83, 69, 128, 77, 79, 85, 83, 197, 77, 79, 85, 78,
-    84, 65, 73, 78, 83, 128, 77, 79, 85, 78, 84, 65, 73, 78, 128, 77, 79, 85,
-    78, 84, 65, 73, 206, 77, 79, 85, 78, 212, 77, 79, 85, 78, 68, 128, 77,
-    79, 85, 78, 196, 77, 79, 84, 79, 82, 87, 65, 89, 128, 77, 79, 84, 79, 82,
-    73, 90, 69, 196, 77, 79, 84, 79, 82, 67, 89, 67, 76, 69, 128, 77, 79, 84,
-    79, 210, 77, 79, 84, 72, 69, 82, 128, 77, 79, 84, 72, 69, 210, 77, 79,
-    84, 128, 77, 79, 83, 81, 85, 73, 84, 79, 128, 77, 79, 83, 81, 85, 69,
-    128, 77, 79, 82, 84, 85, 85, 77, 128, 77, 79, 82, 84, 65, 82, 128, 77,
-    79, 82, 80, 72, 79, 76, 79, 71, 73, 67, 65, 204, 77, 79, 82, 78, 73, 78,
-    71, 128, 77, 79, 80, 128, 77, 79, 79, 83, 69, 45, 67, 82, 69, 197, 77,
-    79, 79, 83, 69, 128, 77, 79, 79, 78, 128, 77, 79, 79, 206, 77, 79, 79,
-    77, 80, 85, 81, 128, 77, 79, 79, 77, 69, 85, 84, 128, 77, 79, 79, 68,
-    128, 77, 79, 79, 196, 77, 79, 79, 128, 77, 79, 78, 84, 73, 69, 69, 78,
-    128, 77, 79, 78, 84, 72, 128, 77, 79, 78, 84, 200, 77, 79, 78, 83, 84,
-    69, 82, 128, 77, 79, 78, 79, 83, 84, 65, 66, 76, 197, 77, 79, 78, 79, 83,
-    80, 65, 67, 197, 77, 79, 78, 79, 82, 65, 73, 76, 128, 77, 79, 78, 79, 71,
-    82, 65, 80, 200, 77, 79, 78, 79, 71, 82, 65, 77, 77, 79, 211, 77, 79, 78,
-    79, 71, 82, 65, 205, 77, 79, 78, 79, 70, 79, 78, 73, 65, 83, 128, 77, 79,
-    78, 79, 67, 85, 76, 65, 210, 77, 79, 78, 79, 67, 76, 69, 128, 77, 79, 78,
-    75, 69, 89, 128, 77, 79, 78, 75, 69, 217, 77, 79, 78, 73, 128, 77, 79,
-    78, 71, 75, 69, 85, 65, 69, 81, 128, 77, 79, 78, 69, 89, 45, 77, 79, 85,
-    84, 200, 77, 79, 78, 69, 217, 77, 79, 78, 128, 77, 79, 206, 77, 79, 76,
-    128, 77, 79, 75, 72, 65, 83, 83, 65, 83, 128, 77, 79, 72, 65, 77, 77, 65,
-    196, 77, 79, 68, 85, 76, 207, 77, 79, 68, 73, 70, 73, 69, 82, 45, 57,
-    128, 77, 79, 68, 73, 70, 73, 69, 82, 45, 56, 128, 77, 79, 68, 73, 70, 73,
-    69, 82, 45, 55, 128, 77, 79, 68, 73, 70, 73, 69, 82, 45, 54, 128, 77, 79,
-    68, 73, 70, 73, 69, 82, 45, 53, 128, 77, 79, 68, 73, 70, 73, 69, 82, 45,
-    52, 128, 77, 79, 68, 73, 70, 73, 69, 82, 45, 51, 128, 77, 79, 68, 73, 70,
-    73, 69, 82, 45, 50, 128, 77, 79, 68, 73, 70, 73, 69, 82, 45, 49, 54, 128,
-    77, 79, 68, 73, 70, 73, 69, 82, 45, 49, 53, 128, 77, 79, 68, 73, 70, 73,
-    69, 82, 45, 49, 52, 128, 77, 79, 68, 73, 70, 73, 69, 82, 45, 49, 51, 128,
-    77, 79, 68, 73, 70, 73, 69, 82, 45, 49, 50, 128, 77, 79, 68, 73, 70, 73,
-    69, 82, 45, 49, 49, 128, 77, 79, 68, 73, 70, 73, 69, 82, 45, 49, 48, 128,
-    77, 79, 68, 73, 70, 73, 69, 82, 128, 77, 79, 68, 201, 77, 79, 68, 69, 83,
-    84, 89, 128, 77, 79, 68, 69, 82, 206, 77, 79, 68, 69, 77, 128, 77, 79,
-    68, 69, 76, 83, 128, 77, 79, 68, 69, 76, 128, 77, 79, 68, 69, 128, 77,
-    79, 66, 73, 76, 197, 77, 79, 65, 128, 77, 79, 45, 54, 128, 77, 79, 45,
-    53, 128, 77, 79, 45, 52, 128, 77, 79, 45, 51, 128, 77, 207, 77, 78, 89,
-    65, 205, 77, 78, 65, 83, 128, 77, 77, 83, 80, 128, 77, 77, 128, 77, 205,
-    77, 76, 65, 128, 77, 76, 128, 77, 75, 80, 65, 82, 65, 209, 77, 73, 88,
-    128, 77, 73, 84, 128, 77, 73, 83, 82, 65, 128, 77, 73, 82, 82, 79, 82,
-    128, 77, 73, 82, 82, 79, 210, 77, 73, 82, 73, 66, 65, 65, 82, 85, 128,
-    77, 73, 82, 73, 128, 77, 73, 82, 69, 68, 128, 77, 73, 80, 128, 77, 73,
-    78, 89, 128, 77, 73, 78, 85, 83, 45, 79, 82, 45, 80, 76, 85, 211, 77, 73,
-    78, 85, 83, 128, 77, 73, 78, 78, 65, 206, 77, 73, 78, 73, 83, 84, 69, 82,
-    128, 77, 73, 78, 73, 77, 73, 90, 69, 128, 77, 73, 78, 73, 77, 65, 128,
-    77, 73, 78, 73, 68, 73, 83, 67, 128, 77, 73, 78, 73, 66, 85, 83, 128, 77,
-    73, 78, 68, 85, 128, 77, 73, 77, 69, 128, 77, 73, 77, 128, 77, 73, 76,
-    76, 73, 79, 78, 83, 128, 77, 73, 76, 76, 73, 79, 78, 211, 77, 73, 76, 76,
-    69, 84, 128, 77, 73, 76, 76, 197, 77, 73, 76, 204, 77, 73, 76, 75, 217,
-    77, 73, 76, 75, 128, 77, 73, 76, 73, 84, 65, 82, 217, 77, 73, 76, 128,
-    77, 73, 75, 85, 82, 79, 78, 128, 77, 73, 75, 82, 79, 206, 77, 73, 75, 82,
-    73, 128, 77, 73, 73, 78, 128, 77, 73, 73, 77, 128, 77, 73, 73, 128, 77,
-    73, 199, 77, 73, 69, 88, 128, 77, 73, 69, 85, 77, 45, 84, 73, 75, 69, 85,
-    84, 128, 77, 73, 69, 85, 77, 45, 83, 83, 65, 78, 71, 83, 73, 79, 83, 128,
-    77, 73, 69, 85, 77, 45, 83, 83, 65, 78, 71, 78, 73, 69, 85, 78, 128, 77,
-    73, 69, 85, 77, 45, 82, 73, 69, 85, 76, 128, 77, 73, 69, 85, 77, 45, 80,
-    73, 69, 85, 80, 45, 83, 73, 79, 83, 128, 77, 73, 69, 85, 77, 45, 80, 73,
-    69, 85, 80, 128, 77, 73, 69, 85, 77, 45, 80, 65, 78, 83, 73, 79, 83, 128,
-    77, 73, 69, 85, 77, 45, 78, 73, 69, 85, 78, 128, 77, 73, 69, 85, 77, 45,
-    67, 73, 69, 85, 67, 128, 77, 73, 69, 85, 77, 45, 67, 72, 73, 69, 85, 67,
-    72, 128, 77, 73, 69, 85, 205, 77, 73, 69, 80, 128, 77, 73, 69, 69, 128,
-    77, 73, 69, 128, 77, 73, 68, 76, 73, 78, 197, 77, 73, 68, 68, 76, 69, 45,
-    87, 69, 76, 83, 200, 77, 73, 68, 68, 76, 69, 128, 77, 73, 68, 45, 76, 69,
-    86, 69, 204, 77, 73, 68, 45, 72, 69, 73, 71, 72, 212, 77, 73, 196, 77,
-    73, 67, 82, 79, 83, 67, 79, 80, 69, 128, 77, 73, 67, 82, 79, 80, 72, 79,
-    78, 69, 128, 77, 73, 67, 82, 79, 66, 69, 128, 77, 73, 67, 82, 207, 77,
-    73, 67, 210, 77, 73, 45, 55, 128, 77, 73, 45, 54, 128, 77, 73, 45, 53,
-    128, 77, 73, 45, 52, 128, 77, 73, 45, 51, 128, 77, 73, 45, 50, 128, 77,
-    73, 45, 49, 128, 77, 72, 90, 128, 77, 72, 65, 128, 77, 72, 128, 77, 71,
-    85, 88, 128, 77, 71, 85, 84, 128, 77, 71, 85, 82, 88, 128, 77, 71, 85,
-    82, 128, 77, 71, 85, 80, 128, 77, 71, 85, 79, 88, 128, 77, 71, 85, 79,
-    80, 128, 77, 71, 85, 79, 128, 77, 71, 85, 128, 77, 71, 79, 88, 128, 77,
-    71, 79, 84, 128, 77, 71, 79, 80, 128, 77, 71, 79, 128, 77, 71, 207, 77,
-    71, 73, 69, 88, 128, 77, 71, 73, 69, 128, 77, 71, 69, 88, 128, 77, 71,
-    69, 80, 128, 77, 71, 69, 128, 77, 71, 66, 85, 128, 77, 71, 66, 79, 79,
-    128, 77, 71, 66, 79, 70, 85, 77, 128, 77, 71, 66, 79, 128, 77, 71, 66,
-    73, 128, 77, 71, 66, 69, 85, 78, 128, 77, 71, 66, 69, 78, 128, 77, 71,
-    66, 69, 69, 128, 77, 71, 66, 69, 128, 77, 71, 66, 65, 83, 65, 81, 128,
-    77, 71, 66, 65, 83, 65, 128, 77, 71, 65, 88, 128, 77, 71, 65, 84, 128,
-    77, 71, 65, 80, 128, 77, 71, 65, 128, 77, 71, 128, 77, 70, 79, 78, 128,
-    77, 70, 79, 206, 77, 70, 79, 128, 77, 70, 73, 89, 65, 81, 128, 77, 70,
-    73, 69, 69, 128, 77, 70, 69, 85, 84, 128, 77, 70, 69, 85, 81, 128, 77,
-    70, 69, 85, 65, 69, 128, 77, 70, 65, 65, 128, 77, 69, 90, 90, 79, 128,
-    77, 69, 88, 128, 77, 69, 85, 212, 77, 69, 85, 81, 128, 77, 69, 85, 78,
-    74, 79, 77, 78, 68, 69, 85, 81, 128, 77, 69, 85, 78, 128, 77, 69, 84, 82,
-    79, 128, 77, 69, 84, 82, 73, 67, 65, 204, 77, 69, 84, 82, 73, 65, 128,
-    77, 69, 84, 82, 69, 84, 69, 211, 77, 69, 84, 79, 66, 69, 76, 85, 83, 128,
-    77, 69, 84, 69, 75, 128, 77, 69, 84, 69, 71, 128, 77, 69, 84, 65, 76,
-    128, 77, 69, 84, 193, 77, 69, 83, 83, 69, 78, 73, 65, 206, 77, 69, 83,
-    83, 65, 71, 69, 128, 77, 69, 83, 83, 65, 71, 197, 77, 69, 83, 79, 128,
-    77, 69, 83, 73, 128, 77, 69, 83, 72, 128, 77, 69, 82, 80, 69, 82, 83, 79,
-    78, 128, 77, 69, 82, 75, 72, 65, 128, 77, 69, 82, 75, 72, 193, 77, 69,
-    82, 73, 68, 73, 65, 78, 83, 128, 77, 69, 82, 73, 128, 77, 69, 82, 71, 69,
-    128, 77, 69, 82, 67, 85, 82, 89, 128, 77, 69, 82, 67, 85, 82, 217, 77,
-    69, 78, 79, 82, 65, 200, 77, 69, 78, 79, 69, 128, 77, 69, 78, 68, 85, 84,
-    128, 77, 69, 78, 128, 77, 69, 77, 79, 128, 77, 69, 77, 66, 69, 82, 83,
-    72, 73, 80, 128, 77, 69, 77, 66, 69, 82, 128, 77, 69, 77, 66, 69, 210,
-    77, 69, 77, 45, 81, 79, 80, 72, 128, 77, 69, 77, 128, 77, 69, 205, 77,
-    69, 76, 84, 73, 78, 199, 77, 69, 76, 79, 68, 73, 195, 77, 69, 76, 73, 75,
-    128, 77, 69, 73, 90, 73, 128, 77, 69, 71, 65, 84, 79, 78, 128, 77, 69,
-    71, 65, 80, 72, 79, 78, 69, 128, 77, 69, 71, 65, 76, 73, 128, 77, 69, 69,
-    84, 79, 82, 85, 128, 77, 69, 69, 84, 69, 201, 77, 69, 69, 84, 128, 77,
-    69, 69, 77, 85, 128, 77, 69, 69, 77, 128, 77, 69, 69, 202, 77, 69, 69,
-    69, 69, 128, 77, 69, 68, 73, 85, 77, 128, 77, 69, 68, 73, 85, 205, 77,
-    69, 68, 73, 69, 86, 65, 204, 77, 69, 68, 73, 67, 73, 78, 69, 128, 77, 69,
-    68, 73, 67, 65, 204, 77, 69, 68, 73, 65, 204, 77, 69, 68, 69, 70, 65, 73,
-    68, 82, 73, 206, 77, 69, 68, 65, 76, 128, 77, 69, 67, 72, 73, 75, 128,
-    77, 69, 67, 72, 73, 203, 77, 69, 67, 72, 65, 78, 73, 67, 65, 204, 77, 69,
-    65, 84, 128, 77, 69, 65, 212, 77, 69, 65, 83, 85, 82, 69, 196, 77, 69,
-    65, 83, 85, 82, 69, 128, 77, 69, 65, 83, 85, 82, 197, 77, 69, 45, 77, 65,
-    128, 77, 69, 45, 50, 128, 77, 69, 45, 49, 128, 77, 68, 85, 206, 77, 196,
-    77, 67, 72, 213, 77, 67, 72, 65, 206, 77, 67, 128, 77, 195, 77, 66, 85,
-    85, 128, 77, 66, 85, 79, 81, 128, 77, 66, 85, 79, 128, 77, 66, 85, 69,
-    128, 77, 66, 85, 65, 69, 77, 128, 77, 66, 85, 65, 69, 128, 77, 66, 79,
-    79, 128, 77, 66, 79, 128, 77, 66, 73, 84, 128, 77, 66, 73, 212, 77, 66,
-    73, 82, 73, 69, 69, 78, 128, 77, 66, 73, 128, 77, 66, 69, 85, 88, 128,
-    77, 66, 69, 85, 82, 73, 128, 77, 66, 69, 85, 77, 128, 77, 66, 69, 82, 65,
-    69, 128, 77, 66, 69, 78, 128, 77, 66, 69, 69, 75, 69, 69, 84, 128, 77,
-    66, 69, 69, 128, 77, 66, 69, 128, 77, 66, 65, 81, 128, 77, 66, 65, 78,
-    89, 73, 128, 77, 66, 65, 65, 82, 65, 69, 128, 77, 66, 65, 65, 75, 69, 84,
-    128, 77, 66, 65, 65, 128, 77, 66, 65, 193, 77, 66, 193, 77, 66, 52, 128,
-    77, 66, 51, 128, 77, 66, 50, 128, 77, 65, 89, 69, 203, 77, 65, 89, 65,
-    78, 78, 65, 128, 77, 65, 89, 65, 206, 77, 65, 89, 128, 77, 65, 88, 73,
-    77, 73, 90, 69, 128, 77, 65, 88, 73, 77, 65, 128, 77, 65, 88, 128, 77,
-    65, 85, 128, 77, 65, 84, 84, 79, 67, 75, 128, 77, 65, 84, 82, 73, 88,
-    128, 77, 65, 84, 69, 82, 73, 65, 76, 83, 128, 77, 65, 84, 128, 77, 65,
-    83, 213, 77, 65, 83, 83, 73, 78, 71, 128, 77, 65, 83, 83, 65, 71, 69,
-    128, 77, 65, 83, 79, 82, 193, 77, 65, 83, 75, 128, 77, 65, 83, 203, 77,
-    65, 83, 72, 70, 65, 65, 84, 128, 77, 65, 83, 72, 50, 128, 77, 65, 83, 67,
-    85, 76, 73, 78, 197, 77, 65, 83, 65, 82, 65, 205, 77, 65, 82, 89, 128,
-    77, 65, 82, 87, 65, 82, 201, 77, 65, 82, 85, 75, 85, 128, 77, 65, 82, 84,
-    89, 82, 73, 193, 77, 65, 82, 84, 73, 65, 204, 77, 65, 82, 82, 89, 73, 78,
-    199, 77, 65, 82, 82, 73, 65, 71, 197, 77, 65, 82, 82, 65, 84, 65, 78,
-    128, 77, 65, 82, 75, 211, 77, 65, 82, 75, 69, 82, 128, 77, 65, 82, 75,
-    45, 52, 128, 77, 65, 82, 75, 45, 51, 128, 77, 65, 82, 75, 45, 50, 128,
-    77, 65, 82, 75, 45, 49, 128, 77, 65, 82, 69, 128, 77, 65, 82, 67, 72, 69,
-    206, 77, 65, 82, 67, 72, 128, 77, 65, 82, 67, 65, 84, 79, 45, 83, 84, 65,
-    67, 67, 65, 84, 79, 128, 77, 65, 82, 67, 65, 84, 79, 128, 77, 65, 82, 67,
-    65, 83, 73, 84, 69, 128, 77, 65, 82, 66, 85, 84, 65, 128, 77, 65, 82, 66,
-    85, 84, 193, 77, 65, 82, 65, 67, 65, 83, 128, 77, 65, 82, 128, 77, 65,
-    81, 65, 70, 128, 77, 65, 81, 128, 77, 65, 80, 76, 197, 77, 65, 80, 73,
-    81, 128, 77, 65, 208, 77, 65, 79, 128, 77, 65, 78, 85, 65, 204, 77, 65,
-    78, 84, 69, 76, 80, 73, 69, 67, 197, 77, 65, 78, 83, 89, 79, 78, 128, 77,
-    65, 78, 83, 85, 65, 69, 128, 77, 65, 78, 78, 65, 218, 77, 65, 78, 78, 65,
-    128, 77, 65, 78, 73, 67, 72, 65, 69, 65, 206, 77, 65, 78, 71, 79, 128,
-    77, 65, 78, 71, 65, 76, 65, 77, 128, 77, 65, 78, 68, 65, 82, 73, 78, 128,
-    77, 65, 78, 68, 65, 73, 76, 73, 78, 199, 77, 65, 78, 68, 65, 73, 195, 77,
-    65, 78, 67, 72, 213, 77, 65, 78, 65, 212, 77, 65, 78, 65, 67, 76, 69, 83,
-    128, 77, 65, 77, 77, 79, 84, 72, 128, 77, 65, 76, 84, 69, 83, 197, 77,
-    65, 76, 207, 77, 65, 76, 69, 69, 82, 73, 128, 77, 65, 76, 197, 77, 65,
-    76, 65, 75, 79, 206, 77, 65, 75, 83, 85, 82, 65, 128, 77, 65, 75, 83, 85,
-    82, 193, 77, 65, 75, 69, 77, 65, 75, 69, 128, 77, 65, 75, 65, 83, 65,
-    210, 77, 65, 73, 90, 69, 128, 77, 65, 73, 89, 65, 77, 79, 75, 128, 77,
-    65, 73, 84, 65, 73, 75, 72, 85, 128, 77, 65, 73, 82, 85, 128, 77, 65, 73,
-    77, 85, 65, 78, 128, 77, 65, 73, 77, 65, 76, 65, 73, 128, 77, 65, 73, 76,
-    66, 79, 216, 77, 65, 73, 75, 85, 82, 79, 128, 77, 65, 73, 68, 69, 78,
-    128, 77, 65, 73, 128, 77, 65, 72, 74, 79, 78, 199, 77, 65, 72, 72, 65,
-    128, 77, 65, 72, 65, 80, 82, 65, 78, 65, 128, 77, 65, 72, 65, 80, 65, 75,
-    72, 128, 77, 65, 72, 65, 74, 65, 78, 201, 77, 65, 72, 65, 65, 80, 82, 65,
-    65, 78, 193, 77, 65, 72, 128, 77, 65, 71, 78, 73, 70, 89, 73, 78, 199,
-    77, 65, 71, 78, 69, 84, 128, 77, 65, 71, 73, 195, 77, 65, 71, 69, 128,
-    77, 65, 69, 83, 73, 128, 77, 65, 69, 78, 89, 73, 128, 77, 65, 69, 78, 74,
-    69, 84, 128, 77, 65, 69, 77, 86, 69, 85, 88, 128, 77, 65, 69, 77, 75, 80,
-    69, 78, 128, 77, 65, 69, 77, 71, 66, 73, 69, 69, 128, 77, 65, 69, 77, 66,
-    71, 66, 73, 69, 69, 128, 77, 65, 69, 77, 66, 65, 128, 77, 65, 69, 77,
-    128, 77, 65, 69, 76, 69, 69, 128, 77, 65, 69, 75, 69, 85, 80, 128, 77,
-    65, 68, 89, 65, 128, 77, 65, 68, 85, 128, 77, 65, 68, 68, 65, 72, 128,
-    77, 65, 68, 68, 65, 200, 77, 65, 68, 68, 65, 128, 77, 65, 68, 68, 193,
-    77, 65, 67, 82, 79, 78, 45, 71, 82, 65, 86, 69, 128, 77, 65, 67, 82, 79,
-    78, 45, 66, 82, 69, 86, 69, 128, 77, 65, 67, 82, 79, 78, 45, 65, 67, 85,
-    84, 69, 128, 77, 65, 67, 82, 79, 78, 128, 77, 65, 67, 82, 79, 206, 77,
-    65, 67, 72, 73, 78, 69, 128, 77, 65, 65, 89, 89, 65, 65, 128, 77, 65, 65,
-    73, 128, 77, 65, 65, 128, 77, 65, 50, 128, 77, 65, 45, 55, 128, 77, 65,
-    45, 54, 128, 77, 65, 45, 53, 128, 77, 65, 45, 52, 128, 77, 65, 45, 51,
-    128, 77, 65, 45, 50, 128, 77, 65, 45, 49, 128, 77, 49, 57, 183, 77, 49,
-    57, 182, 77, 49, 57, 181, 77, 49, 57, 180, 77, 49, 57, 179, 77, 49, 57,
-    178, 77, 49, 57, 177, 77, 49, 57, 176, 77, 49, 56, 185, 77, 49, 56, 184,
-    77, 49, 56, 183, 77, 49, 56, 182, 77, 49, 56, 181, 77, 49, 56, 180, 77,
-    49, 56, 179, 77, 49, 56, 178, 77, 49, 56, 177, 77, 49, 56, 176, 77, 49,
-    55, 185, 77, 49, 55, 184, 77, 49, 55, 183, 77, 49, 55, 182, 77, 49, 55,
-    181, 77, 49, 55, 180, 77, 49, 55, 179, 77, 49, 55, 178, 77, 49, 55, 177,
-    77, 49, 55, 176, 77, 49, 54, 185, 77, 49, 54, 184, 77, 49, 54, 183, 77,
-    49, 54, 182, 77, 49, 54, 181, 77, 49, 54, 180, 77, 49, 54, 179, 77, 49,
-    54, 178, 77, 49, 54, 177, 77, 49, 54, 176, 77, 49, 53, 185, 77, 49, 53,
-    184, 77, 49, 53, 183, 77, 49, 53, 182, 77, 49, 53, 181, 77, 49, 53, 180,
-    77, 49, 53, 179, 77, 49, 53, 178, 77, 49, 53, 177, 77, 49, 53, 176, 77,
-    49, 52, 185, 77, 49, 52, 184, 77, 49, 52, 183, 77, 49, 52, 182, 77, 49,
-    52, 181, 77, 49, 52, 180, 77, 49, 52, 179, 77, 49, 52, 178, 77, 49, 52,
-    177, 77, 49, 52, 176, 77, 49, 51, 185, 77, 49, 51, 184, 77, 49, 51, 183,
-    77, 49, 51, 182, 77, 49, 51, 181, 77, 49, 51, 180, 77, 49, 51, 179, 77,
-    49, 51, 178, 77, 49, 51, 177, 77, 49, 51, 176, 77, 49, 50, 185, 77, 49,
-    50, 184, 77, 49, 50, 183, 77, 49, 50, 182, 77, 49, 50, 181, 77, 49, 50,
-    180, 77, 49, 50, 179, 77, 49, 50, 178, 77, 49, 50, 177, 77, 49, 50, 176,
-    77, 49, 49, 185, 77, 49, 49, 184, 77, 49, 49, 183, 77, 49, 49, 182, 77,
-    49, 49, 181, 77, 49, 49, 180, 77, 49, 49, 179, 77, 49, 49, 178, 77, 49,
-    49, 177, 77, 49, 49, 176, 77, 49, 48, 185, 77, 49, 48, 184, 77, 49, 48,
-    183, 77, 49, 48, 182, 77, 49, 48, 181, 77, 49, 48, 180, 77, 49, 48, 179,
-    77, 49, 48, 178, 77, 49, 48, 177, 77, 49, 48, 176, 77, 48, 57, 185, 77,
-    48, 57, 184, 77, 48, 57, 183, 77, 48, 57, 182, 77, 48, 57, 181, 77, 48,
-    57, 180, 77, 48, 57, 179, 77, 48, 57, 178, 77, 48, 57, 177, 77, 48, 57,
-    176, 77, 48, 56, 185, 77, 48, 56, 184, 77, 48, 56, 183, 77, 48, 56, 182,
-    77, 48, 56, 181, 77, 48, 56, 180, 77, 48, 56, 179, 77, 48, 56, 178, 77,
-    48, 56, 177, 77, 48, 56, 176, 77, 48, 55, 185, 77, 48, 55, 184, 77, 48,
-    55, 183, 77, 48, 55, 182, 77, 48, 55, 181, 77, 48, 55, 180, 77, 48, 55,
-    179, 77, 48, 55, 178, 77, 48, 55, 177, 77, 48, 55, 176, 77, 48, 54, 185,
-    77, 48, 54, 184, 77, 48, 54, 183, 77, 48, 54, 182, 77, 48, 54, 181, 77,
-    48, 54, 180, 77, 48, 54, 179, 77, 48, 54, 178, 77, 48, 54, 177, 77, 48,
-    54, 176, 77, 48, 53, 185, 77, 48, 53, 184, 77, 48, 53, 183, 77, 48, 53,
-    182, 77, 48, 53, 181, 77, 48, 53, 180, 77, 48, 53, 179, 77, 48, 53, 178,
-    77, 48, 53, 177, 77, 48, 53, 176, 77, 48, 52, 185, 77, 48, 52, 184, 77,
-    48, 52, 183, 77, 48, 52, 182, 77, 48, 52, 181, 77, 48, 52, 52, 128, 77,
-    48, 52, 180, 77, 48, 52, 51, 128, 77, 48, 52, 179, 77, 48, 52, 50, 128,
-    77, 48, 52, 178, 77, 48, 52, 49, 128, 77, 48, 52, 177, 77, 48, 52, 48,
-    65, 128, 77, 48, 52, 48, 128, 77, 48, 52, 176, 77, 48, 51, 57, 128, 77,
-    48, 51, 185, 77, 48, 51, 56, 128, 77, 48, 51, 184, 77, 48, 51, 55, 128,
-    77, 48, 51, 183, 77, 48, 51, 54, 128, 77, 48, 51, 182, 77, 48, 51, 53,
-    128, 77, 48, 51, 181, 77, 48, 51, 52, 128, 77, 48, 51, 180, 77, 48, 51,
-    51, 66, 128, 77, 48, 51, 51, 65, 128, 77, 48, 51, 51, 128, 77, 48, 51,
-    179, 77, 48, 51, 50, 128, 77, 48, 51, 178, 77, 48, 51, 49, 65, 128, 77,
-    48, 51, 49, 128, 77, 48, 51, 177, 77, 48, 51, 48, 128, 77, 48, 51, 176,
-    77, 48, 50, 57, 128, 77, 48, 50, 185, 77, 48, 50, 56, 65, 128, 77, 48,
-    50, 56, 128, 77, 48, 50, 184, 77, 48, 50, 55, 128, 77, 48, 50, 183, 77,
-    48, 50, 54, 128, 77, 48, 50, 182, 77, 48, 50, 53, 128, 77, 48, 50, 181,
-    77, 48, 50, 52, 65, 128, 77, 48, 50, 52, 128, 77, 48, 50, 180, 77, 48,
-    50, 51, 128, 77, 48, 50, 179, 77, 48, 50, 50, 65, 128, 77, 48, 50, 50,
-    128, 77, 48, 50, 178, 77, 48, 50, 49, 128, 77, 48, 50, 177, 77, 48, 50,
-    48, 128, 77, 48, 50, 176, 77, 48, 49, 57, 128, 77, 48, 49, 185, 77, 48,
-    49, 56, 128, 77, 48, 49, 184, 77, 48, 49, 55, 65, 128, 77, 48, 49, 55,
-    128, 77, 48, 49, 183, 77, 48, 49, 54, 65, 128, 77, 48, 49, 54, 128, 77,
-    48, 49, 182, 77, 48, 49, 53, 65, 128, 77, 48, 49, 53, 128, 77, 48, 49,
-    181, 77, 48, 49, 52, 128, 77, 48, 49, 180, 77, 48, 49, 51, 128, 77, 48,
-    49, 179, 77, 48, 49, 50, 72, 128, 77, 48, 49, 50, 71, 128, 77, 48, 49,
-    50, 70, 128, 77, 48, 49, 50, 69, 128, 77, 48, 49, 50, 68, 128, 77, 48,
-    49, 50, 67, 128, 77, 48, 49, 50, 66, 128, 77, 48, 49, 50, 65, 128, 77,
-    48, 49, 50, 128, 77, 48, 49, 178, 77, 48, 49, 49, 128, 77, 48, 49, 177,
-    77, 48, 49, 48, 65, 128, 77, 48, 49, 48, 128, 77, 48, 49, 176, 77, 48,
-    48, 57, 128, 77, 48, 48, 185, 77, 48, 48, 56, 128, 77, 48, 48, 184, 77,
-    48, 48, 55, 128, 77, 48, 48, 183, 77, 48, 48, 54, 128, 77, 48, 48, 182,
-    77, 48, 48, 53, 128, 77, 48, 48, 181, 77, 48, 48, 52, 128, 77, 48, 48,
-    180, 77, 48, 48, 51, 65, 128, 77, 48, 48, 51, 128, 77, 48, 48, 179, 77,
-    48, 48, 50, 128, 77, 48, 48, 178, 77, 48, 48, 49, 66, 128, 77, 48, 48,
-    49, 65, 128, 77, 48, 48, 49, 128, 77, 48, 48, 177, 76, 218, 76, 89, 89,
-    128, 76, 89, 88, 128, 76, 89, 84, 128, 76, 89, 82, 88, 128, 76, 89, 82,
-    128, 76, 89, 80, 128, 76, 89, 73, 84, 128, 76, 89, 73, 78, 199, 76, 89,
-    68, 73, 65, 206, 76, 89, 67, 73, 65, 206, 76, 88, 128, 76, 87, 79, 79,
-    128, 76, 87, 79, 128, 76, 87, 73, 73, 128, 76, 87, 73, 128, 76, 87, 69,
-    128, 76, 87, 65, 65, 128, 76, 87, 65, 128, 76, 85, 88, 128, 76, 85, 85,
-    128, 76, 85, 84, 128, 76, 85, 82, 88, 128, 76, 85, 80, 128, 76, 85, 79,
-    88, 128, 76, 85, 79, 84, 128, 76, 85, 79, 80, 128, 76, 85, 79, 128, 76,
-    85, 78, 71, 83, 73, 128, 76, 85, 78, 71, 83, 128, 76, 85, 78, 65, 84,
-    197, 76, 85, 78, 65, 210, 76, 85, 205, 76, 85, 76, 128, 76, 85, 73, 83,
-    128, 76, 85, 72, 85, 82, 128, 76, 85, 72, 128, 76, 85, 200, 76, 85, 71,
-    71, 65, 71, 69, 128, 76, 85, 71, 65, 76, 128, 76, 85, 71, 65, 204, 76,
-    85, 69, 128, 76, 85, 197, 76, 85, 66, 128, 76, 85, 65, 69, 80, 128, 76,
-    85, 51, 128, 76, 85, 50, 128, 76, 85, 178, 76, 82, 79, 128, 76, 82, 77,
-    128, 76, 82, 73, 128, 76, 82, 69, 128, 76, 79, 90, 69, 78, 71, 69, 128,
-    76, 79, 90, 69, 78, 71, 197, 76, 79, 88, 128, 76, 79, 87, 69, 82, 69,
-    196, 76, 79, 87, 45, 82, 69, 86, 69, 82, 83, 69, 68, 45, 185, 76, 79, 87,
-    45, 77, 73, 196, 76, 79, 87, 45, 70, 65, 76, 76, 73, 78, 199, 76, 79, 87,
-    45, 185, 76, 79, 86, 197, 76, 79, 85, 82, 69, 128, 76, 79, 85, 68, 83,
-    80, 69, 65, 75, 69, 82, 128, 76, 79, 85, 68, 76, 217, 76, 79, 84, 85, 83,
-    128, 76, 79, 84, 85, 211, 76, 79, 84, 73, 79, 206, 76, 79, 84, 128, 76,
-    79, 83, 212, 76, 79, 83, 83, 76, 69, 83, 83, 128, 76, 79, 82, 82, 89,
-    128, 76, 79, 82, 82, 65, 73, 78, 69, 128, 76, 79, 81, 128, 76, 79, 80,
-    128, 76, 79, 79, 84, 128, 76, 79, 79, 80, 69, 196, 76, 79, 79, 80, 128,
-    76, 79, 79, 208, 76, 79, 79, 78, 128, 76, 79, 79, 203, 76, 79, 79, 128,
-    76, 79, 78, 83, 85, 77, 128, 76, 79, 78, 71, 65, 128, 76, 79, 78, 71,
-    193, 76, 79, 78, 71, 45, 76, 69, 71, 71, 69, 196, 76, 79, 78, 71, 45, 66,
-    82, 65, 78, 67, 72, 45, 89, 82, 128, 76, 79, 78, 71, 45, 66, 82, 65, 78,
-    67, 72, 45, 83, 79, 204, 76, 79, 78, 71, 45, 66, 82, 65, 78, 67, 72, 45,
-    79, 83, 211, 76, 79, 78, 71, 45, 66, 82, 65, 78, 67, 72, 45, 77, 65, 68,
-    210, 76, 79, 78, 71, 45, 66, 82, 65, 78, 67, 72, 45, 72, 65, 71, 65, 76,
-    204, 76, 79, 78, 71, 45, 66, 82, 65, 78, 67, 72, 45, 65, 210, 76, 79, 77,
-    77, 65, 69, 128, 76, 79, 77, 75, 65, 128, 76, 79, 77, 128, 76, 79, 205,
-    76, 79, 76, 76, 73, 80, 79, 80, 128, 76, 79, 76, 76, 128, 76, 79, 71,
-    210, 76, 79, 71, 79, 84, 89, 80, 197, 76, 79, 71, 79, 71, 82, 65, 205,
-    76, 79, 71, 128, 76, 79, 68, 69, 83, 84, 79, 78, 69, 128, 76, 79, 67, 79,
-    77, 79, 84, 73, 86, 69, 128, 76, 79, 67, 75, 73, 78, 71, 45, 83, 72, 73,
-    70, 212, 76, 79, 67, 65, 84, 73, 86, 69, 128, 76, 79, 67, 65, 84, 73, 79,
-    78, 45, 87, 65, 76, 76, 80, 76, 65, 78, 197, 76, 79, 67, 65, 84, 73, 79,
-    78, 45, 70, 76, 79, 79, 82, 80, 76, 65, 78, 197, 76, 79, 67, 65, 84, 73,
-    79, 78, 128, 76, 79, 67, 65, 84, 73, 79, 206, 76, 79, 66, 83, 84, 69, 82,
-    128, 76, 79, 65, 128, 76, 78, 128, 76, 76, 85, 85, 128, 76, 76, 79, 79,
-    128, 76, 76, 76, 85, 85, 128, 76, 76, 76, 85, 128, 76, 76, 76, 79, 79,
-    128, 76, 76, 76, 79, 128, 76, 76, 76, 73, 73, 128, 76, 76, 76, 73, 128,
-    76, 76, 76, 69, 69, 128, 76, 76, 76, 69, 128, 76, 76, 76, 65, 85, 128,
-    76, 76, 76, 65, 73, 128, 76, 76, 76, 65, 65, 128, 76, 76, 76, 65, 128,
-    76, 76, 76, 128, 76, 76, 72, 65, 128, 76, 76, 65, 77, 65, 128, 76, 74,
-    85, 68, 73, 74, 69, 128, 76, 74, 69, 128, 76, 74, 128, 76, 73, 90, 65,
-    82, 68, 128, 76, 73, 88, 128, 76, 73, 87, 78, 128, 76, 73, 86, 82, 197,
-    76, 73, 84, 84, 76, 69, 128, 76, 73, 84, 84, 76, 197, 76, 73, 84, 84, 69,
-    210, 76, 73, 84, 82, 193, 76, 73, 84, 200, 76, 73, 83, 213, 76, 73, 83,
-    128, 76, 73, 82, 193, 76, 73, 81, 85, 73, 68, 128, 76, 73, 81, 85, 73,
-    196, 76, 73, 81, 128, 76, 73, 80, 83, 84, 73, 67, 75, 128, 76, 73, 80,
-    211, 76, 73, 208, 76, 73, 78, 75, 73, 78, 199, 76, 73, 78, 75, 69, 196,
-    76, 73, 78, 203, 76, 73, 78, 71, 83, 65, 128, 76, 73, 78, 69, 83, 128,
-    76, 73, 78, 69, 211, 76, 73, 78, 69, 45, 57, 128, 76, 73, 78, 69, 45, 55,
-    128, 76, 73, 78, 69, 45, 51, 128, 76, 73, 78, 69, 45, 49, 128, 76, 73,
-    77, 77, 85, 52, 128, 76, 73, 77, 77, 85, 50, 128, 76, 73, 77, 77, 85,
-    128, 76, 73, 77, 77, 213, 76, 73, 77, 73, 84, 69, 196, 76, 73, 77, 73,
-    84, 65, 84, 73, 79, 78, 128, 76, 73, 77, 73, 84, 128, 76, 73, 77, 69,
-    128, 76, 73, 77, 66, 213, 76, 73, 77, 66, 211, 76, 73, 77, 194, 76, 73,
-    76, 89, 128, 76, 73, 76, 73, 84, 72, 128, 76, 73, 76, 128, 76, 73, 71,
-    72, 84, 78, 73, 78, 71, 128, 76, 73, 71, 72, 84, 78, 73, 78, 199, 76, 73,
-    71, 72, 84, 72, 79, 85, 83, 69, 128, 76, 73, 71, 72, 84, 128, 76, 73, 71,
-    65, 84, 73, 78, 199, 76, 73, 70, 84, 69, 82, 128, 76, 73, 70, 69, 128,
-    76, 73, 69, 88, 128, 76, 73, 69, 84, 128, 76, 73, 69, 80, 128, 76, 73,
-    69, 69, 128, 76, 73, 69, 128, 76, 73, 68, 128, 76, 73, 67, 75, 73, 78,
-    199, 76, 73, 66, 82, 65, 128, 76, 73, 66, 69, 82, 84, 89, 128, 76, 73,
-    65, 66, 73, 76, 73, 84, 217, 76, 72, 73, 73, 128, 76, 72, 65, 86, 73, 89,
-    65, 78, 73, 128, 76, 72, 65, 199, 76, 72, 65, 65, 128, 76, 72, 128, 76,
-    69, 90, 72, 128, 76, 69, 90, 200, 76, 69, 88, 128, 76, 69, 86, 73, 84,
-    65, 84, 73, 78, 71, 128, 76, 69, 86, 69, 76, 45, 51, 128, 76, 69, 86, 69,
-    76, 45, 50, 128, 76, 69, 85, 77, 128, 76, 69, 85, 65, 69, 80, 128, 76,
-    69, 85, 65, 69, 77, 128, 76, 69, 85, 128, 76, 69, 213, 76, 69, 84, 84,
-    69, 82, 83, 128, 76, 69, 84, 84, 69, 82, 128, 76, 69, 212, 76, 69, 83,
-    83, 69, 210, 76, 69, 83, 83, 45, 84, 72, 65, 78, 128, 76, 69, 83, 83, 45,
-    84, 72, 65, 206, 76, 69, 83, 72, 128, 76, 69, 80, 67, 72, 193, 76, 69,
-    80, 128, 76, 69, 79, 80, 65, 82, 68, 128, 76, 69, 79, 128, 76, 69, 78,
-    84, 73, 67, 85, 76, 65, 210, 76, 69, 78, 73, 83, 128, 76, 69, 78, 73,
-    211, 76, 69, 78, 71, 84, 72, 69, 78, 69, 82, 128, 76, 69, 78, 71, 84, 72,
-    45, 55, 128, 76, 69, 78, 71, 84, 72, 45, 54, 128, 76, 69, 78, 71, 84, 72,
-    45, 53, 128, 76, 69, 78, 71, 84, 72, 45, 52, 128, 76, 69, 78, 71, 84, 72,
-    45, 51, 128, 76, 69, 78, 71, 84, 72, 45, 50, 128, 76, 69, 78, 71, 84, 72,
-    45, 49, 128, 76, 69, 78, 71, 84, 200, 76, 69, 78, 71, 65, 128, 76, 69,
-    78, 71, 193, 76, 69, 77, 79, 78, 128, 76, 69, 77, 79, 73, 128, 76, 69,
-    76, 69, 84, 128, 76, 69, 76, 69, 212, 76, 69, 203, 76, 69, 73, 77, 77,
-    65, 128, 76, 69, 73, 77, 77, 193, 76, 69, 73, 128, 76, 69, 71, 83, 128,
-    76, 69, 71, 73, 79, 78, 128, 76, 69, 71, 69, 84, 79, 211, 76, 69, 71,
-    128, 76, 69, 199, 76, 69, 70, 84, 87, 65, 82, 68, 83, 128, 76, 69, 70,
-    84, 45, 84, 79, 45, 82, 73, 71, 72, 212, 76, 69, 70, 84, 45, 83, 84, 69,
-    205, 76, 69, 70, 84, 45, 83, 73, 68, 197, 76, 69, 70, 84, 45, 83, 72, 65,
-    68, 69, 196, 76, 69, 70, 84, 45, 80, 79, 73, 78, 84, 73, 78, 199, 76, 69,
-    70, 84, 45, 76, 73, 71, 72, 84, 69, 196, 76, 69, 70, 84, 45, 72, 65, 78,
-    68, 69, 196, 76, 69, 70, 84, 45, 72, 65, 78, 196, 76, 69, 70, 84, 45, 70,
-    65, 67, 73, 78, 199, 76, 69, 70, 84, 128, 76, 69, 69, 82, 65, 69, 87, 65,
-    128, 76, 69, 69, 75, 128, 76, 69, 69, 69, 69, 128, 76, 69, 68, 71, 69,
-    82, 128, 76, 69, 65, 84, 72, 69, 82, 128, 76, 69, 65, 78, 73, 78, 199,
-    76, 69, 65, 70, 217, 76, 69, 65, 70, 128, 76, 69, 65, 198, 76, 69, 65,
-    68, 69, 82, 128, 76, 69, 65, 196, 76, 68, 65, 78, 128, 76, 68, 50, 128,
-    76, 67, 201, 76, 67, 197, 76, 65, 90, 217, 76, 65, 89, 65, 78, 78, 65,
-    128, 76, 65, 88, 128, 76, 65, 87, 128, 76, 65, 215, 76, 65, 85, 76, 65,
-    128, 76, 65, 85, 75, 65, 218, 76, 65, 85, 74, 128, 76, 65, 85, 71, 72,
-    73, 78, 71, 128, 76, 65, 84, 73, 78, 65, 84, 197, 76, 65, 84, 73, 75,
-    128, 76, 65, 84, 69, 82, 65, 204, 76, 65, 84, 197, 76, 65, 83, 212, 76,
-    65, 82, 89, 78, 71, 69, 65, 204, 76, 65, 82, 201, 76, 65, 82, 71, 69, 83,
-    84, 128, 76, 65, 82, 71, 69, 210, 76, 65, 82, 71, 69, 128, 76, 65, 82,
-    71, 197, 76, 65, 81, 128, 76, 65, 80, 65, 81, 128, 76, 65, 207, 76, 65,
-    78, 84, 69, 82, 78, 128, 76, 65, 78, 84, 65, 78, 71, 128, 76, 65, 78, 71,
-    85, 65, 71, 197, 76, 65, 78, 69, 83, 128, 76, 65, 78, 196, 76, 65, 78,
-    128, 76, 65, 77, 80, 128, 76, 65, 77, 69, 68, 72, 128, 76, 65, 77, 69,
-    68, 128, 76, 65, 77, 69, 196, 76, 65, 77, 69, 128, 76, 65, 77, 197, 76,
-    65, 77, 68, 65, 128, 76, 65, 77, 68, 128, 76, 65, 77, 66, 68, 193, 76,
-    65, 77, 65, 68, 72, 128, 76, 65, 76, 128, 76, 65, 204, 76, 65, 75, 75,
-    72, 65, 78, 71, 89, 65, 79, 128, 76, 65, 75, 72, 65, 78, 128, 76, 65, 75,
-    72, 128, 76, 65, 75, 200, 76, 65, 75, 45, 55, 52, 57, 128, 76, 65, 75,
-    45, 55, 50, 52, 128, 76, 65, 75, 45, 54, 54, 56, 128, 76, 65, 75, 45, 54,
-    52, 56, 128, 76, 65, 75, 45, 54, 52, 184, 76, 65, 75, 45, 54, 51, 54,
-    128, 76, 65, 75, 45, 54, 49, 55, 128, 76, 65, 75, 45, 54, 49, 183, 76,
-    65, 75, 45, 54, 48, 56, 128, 76, 65, 75, 45, 53, 53, 48, 128, 76, 65, 75,
-    45, 52, 57, 53, 128, 76, 65, 75, 45, 52, 57, 51, 128, 76, 65, 75, 45, 52,
-    57, 50, 128, 76, 65, 75, 45, 52, 57, 48, 128, 76, 65, 75, 45, 52, 56, 51,
-    128, 76, 65, 75, 45, 52, 55, 48, 128, 76, 65, 75, 45, 52, 53, 55, 128,
-    76, 65, 75, 45, 52, 53, 48, 128, 76, 65, 75, 45, 52, 52, 57, 128, 76, 65,
-    75, 45, 52, 52, 185, 76, 65, 75, 45, 52, 52, 49, 128, 76, 65, 75, 45, 51,
-    57, 48, 128, 76, 65, 75, 45, 51, 56, 52, 128, 76, 65, 75, 45, 51, 56, 51,
-    128, 76, 65, 75, 45, 51, 52, 56, 128, 76, 65, 75, 45, 51, 52, 55, 128,
-    76, 65, 75, 45, 51, 52, 51, 128, 76, 65, 75, 45, 50, 54, 54, 128, 76, 65,
-    75, 45, 50, 54, 53, 128, 76, 65, 75, 45, 50, 51, 56, 128, 76, 65, 75, 45,
-    50, 50, 56, 128, 76, 65, 75, 45, 50, 50, 53, 128, 76, 65, 75, 45, 50, 50,
-    48, 128, 76, 65, 75, 45, 50, 49, 57, 128, 76, 65, 75, 45, 50, 49, 48,
-    128, 76, 65, 75, 45, 49, 52, 50, 128, 76, 65, 75, 45, 49, 51, 48, 128,
-    76, 65, 75, 45, 48, 57, 50, 128, 76, 65, 75, 45, 48, 56, 49, 128, 76, 65,
-    75, 45, 48, 56, 177, 76, 65, 75, 45, 48, 56, 48, 128, 76, 65, 75, 45, 48,
-    55, 185, 76, 65, 75, 45, 48, 54, 50, 128, 76, 65, 75, 45, 48, 53, 49,
-    128, 76, 65, 75, 45, 48, 53, 48, 128, 76, 65, 75, 45, 48, 51, 48, 128,
-    76, 65, 75, 45, 48, 50, 53, 128, 76, 65, 75, 45, 48, 50, 49, 128, 76, 65,
-    75, 45, 48, 50, 48, 128, 76, 65, 75, 45, 48, 48, 51, 128, 76, 65, 74, 65,
-    78, 89, 65, 76, 65, 78, 128, 76, 65, 73, 78, 199, 76, 65, 201, 76, 65,
-    72, 83, 72, 85, 128, 76, 65, 72, 128, 76, 65, 71, 85, 83, 128, 76, 65,
-    71, 213, 76, 65, 71, 65, 82, 128, 76, 65, 71, 65, 210, 76, 65, 71, 65,
-    66, 128, 76, 65, 71, 65, 194, 76, 65, 69, 86, 128, 76, 65, 69, 128, 76,
-    65, 68, 217, 76, 65, 68, 68, 69, 82, 128, 76, 65, 67, 82, 79, 83, 83,
-    197, 76, 65, 67, 75, 128, 76, 65, 67, 65, 128, 76, 65, 66, 79, 85, 82,
-    73, 78, 71, 128, 76, 65, 66, 79, 82, 128, 76, 65, 66, 73, 65, 76, 73, 90,
-    65, 84, 73, 79, 206, 76, 65, 66, 73, 65, 204, 76, 65, 66, 69, 76, 128,
-    76, 65, 66, 65, 84, 128, 76, 65, 194, 76, 65, 65, 78, 65, 69, 128, 76,
-    65, 65, 78, 128, 76, 65, 65, 77, 85, 128, 76, 65, 65, 73, 128, 76, 54,
-    128, 76, 52, 128, 76, 51, 128, 76, 50, 128, 76, 48, 48, 54, 65, 128, 76,
-    48, 48, 50, 65, 128, 76, 45, 84, 89, 80, 197, 76, 45, 83, 72, 65, 80, 69,
-    196, 75, 89, 85, 82, 73, 73, 128, 75, 89, 85, 128, 75, 89, 79, 128, 75,
-    89, 76, 73, 83, 77, 65, 128, 75, 89, 73, 128, 75, 89, 69, 128, 75, 89,
-    65, 84, 72, 79, 211, 75, 89, 65, 65, 128, 75, 89, 65, 128, 75, 88, 87,
-    73, 128, 75, 88, 87, 69, 69, 128, 75, 88, 87, 69, 128, 75, 88, 87, 65,
-    65, 128, 75, 88, 87, 65, 128, 75, 88, 85, 128, 75, 88, 79, 128, 75, 88,
-    73, 128, 75, 88, 69, 69, 128, 75, 88, 69, 128, 75, 88, 65, 65, 128, 75,
-    88, 65, 128, 75, 87, 86, 128, 75, 87, 85, 51, 49, 56, 128, 75, 87, 79,
-    79, 128, 75, 87, 79, 128, 75, 87, 77, 128, 75, 87, 73, 73, 128, 75, 87,
-    73, 128, 75, 87, 69, 69, 128, 75, 87, 69, 128, 75, 87, 66, 128, 75, 87,
-    65, 89, 128, 75, 87, 65, 69, 84, 128, 75, 87, 65, 65, 128, 75, 86, 65,
-    128, 75, 86, 128, 75, 85, 90, 72, 73, 128, 75, 85, 88, 128, 75, 85, 86,
-    128, 75, 85, 85, 72, 128, 75, 85, 84, 128, 75, 85, 83, 77, 65, 128, 75,
-    85, 83, 72, 85, 50, 128, 75, 85, 83, 72, 85, 178, 75, 85, 82, 88, 128,
-    75, 85, 82, 85, 90, 69, 73, 82, 79, 128, 75, 85, 82, 84, 128, 75, 85, 82,
-    79, 79, 78, 69, 128, 75, 85, 82, 128, 75, 85, 210, 75, 85, 81, 128, 75,
-    85, 80, 78, 65, 89, 65, 128, 75, 85, 79, 88, 128, 75, 85, 79, 80, 128,
-    75, 85, 79, 208, 75, 85, 79, 77, 128, 75, 85, 79, 128, 75, 85, 78, 71,
-    128, 75, 85, 78, 68, 68, 65, 76, 73, 89, 65, 128, 75, 85, 76, 128, 75,
-    85, 204, 75, 85, 71, 128, 75, 85, 70, 73, 83, 77, 65, 128, 75, 85, 69,
-    84, 128, 75, 85, 66, 128, 75, 85, 65, 86, 128, 75, 85, 65, 66, 128, 75,
-    85, 65, 128, 75, 85, 55, 128, 75, 85, 52, 128, 75, 85, 180, 75, 85, 51,
-    128, 75, 85, 179, 75, 85, 45, 55, 128, 75, 85, 45, 54, 128, 75, 85, 45,
-    53, 128, 75, 85, 45, 52, 128, 75, 85, 45, 51, 128, 75, 85, 45, 50, 128,
-    75, 85, 45, 49, 128, 75, 84, 128, 75, 83, 83, 85, 85, 128, 75, 83, 83,
-    85, 128, 75, 83, 83, 79, 79, 128, 75, 83, 83, 79, 128, 75, 83, 83, 73,
-    73, 128, 75, 83, 83, 73, 128, 75, 83, 83, 69, 69, 128, 75, 83, 83, 69,
-    128, 75, 83, 83, 65, 85, 128, 75, 83, 83, 65, 73, 128, 75, 83, 83, 65,
-    65, 128, 75, 83, 83, 65, 128, 75, 83, 83, 128, 75, 83, 73, 128, 75, 82,
-    89, 90, 72, 69, 86, 65, 89, 65, 128, 75, 82, 89, 90, 72, 69, 77, 128, 75,
-    82, 89, 90, 72, 69, 205, 75, 82, 89, 90, 72, 128, 75, 82, 89, 90, 200,
-    75, 82, 89, 85, 75, 79, 86, 65, 89, 65, 128, 75, 82, 89, 85, 75, 79, 86,
-    65, 89, 193, 75, 82, 89, 85, 75, 128, 75, 82, 89, 85, 203, 75, 82, 79,
-    78, 79, 83, 128, 75, 82, 69, 77, 65, 83, 84, 73, 128, 75, 82, 65, 84, 73,
-    77, 79, 89, 80, 79, 82, 82, 79, 79, 78, 128, 75, 82, 65, 84, 73, 77, 79,
-    75, 79, 85, 70, 73, 83, 77, 65, 128, 75, 82, 65, 84, 73, 77, 65, 84, 65,
-    128, 75, 82, 65, 84, 73, 77, 193, 75, 80, 85, 128, 75, 80, 79, 81, 128,
-    75, 80, 79, 79, 128, 75, 80, 79, 128, 75, 80, 73, 128, 75, 80, 69, 85,
-    88, 128, 75, 80, 69, 69, 128, 75, 80, 69, 128, 75, 80, 65, 82, 65, 81,
-    128, 75, 80, 65, 78, 128, 75, 80, 65, 72, 128, 75, 80, 65, 128, 75, 80,
-    128, 75, 79, 88, 128, 75, 79, 86, 85, 85, 128, 75, 79, 86, 128, 75, 79,
-    84, 79, 128, 75, 79, 82, 85, 78, 65, 128, 75, 79, 82, 79, 78, 73, 83,
-    128, 75, 79, 82, 79, 78, 128, 75, 79, 82, 69, 65, 206, 75, 79, 82, 65,
-    78, 73, 195, 75, 79, 81, 78, 68, 79, 78, 128, 75, 79, 80, 80, 65, 128,
-    75, 79, 80, 128, 75, 79, 79, 86, 128, 75, 79, 79, 80, 79, 128, 75, 79,
-    79, 77, 85, 85, 84, 128, 75, 79, 79, 66, 128, 75, 79, 79, 128, 75, 79,
-    78, 84, 69, 86, 77, 65, 128, 75, 79, 78, 84, 69, 86, 77, 193, 75, 79, 77,
-    201, 75, 79, 77, 66, 85, 86, 65, 128, 75, 79, 77, 66, 85, 86, 193, 75,
-    79, 77, 66, 213, 75, 79, 75, 79, 128, 75, 79, 75, 69, 128, 75, 79, 75,
-    128, 75, 79, 203, 75, 79, 73, 78, 73, 128, 75, 79, 73, 128, 75, 79, 201,
-    75, 79, 72, 128, 75, 79, 71, 72, 79, 77, 128, 75, 79, 69, 84, 128, 75,
-    79, 66, 89, 76, 65, 128, 75, 79, 66, 128, 75, 79, 65, 76, 65, 128, 75,
-    79, 65, 128, 75, 79, 45, 75, 73, 128, 75, 79, 45, 51, 128, 75, 79, 45,
-    50, 128, 75, 79, 45, 49, 128, 75, 78, 85, 67, 75, 76, 69, 83, 128, 75,
-    78, 85, 67, 75, 76, 69, 128, 75, 78, 79, 84, 128, 75, 78, 79, 66, 83,
-    128, 75, 78, 73, 71, 72, 84, 45, 82, 79, 79, 75, 128, 75, 78, 73, 71, 72,
-    84, 45, 81, 85, 69, 69, 78, 128, 75, 78, 73, 71, 72, 84, 45, 66, 73, 83,
-    72, 79, 80, 128, 75, 78, 73, 71, 72, 84, 128, 75, 78, 73, 71, 72, 212,
-    75, 78, 73, 70, 69, 128, 75, 78, 73, 70, 197, 75, 78, 69, 69, 76, 73, 78,
-    199, 75, 77, 128, 75, 205, 75, 76, 89, 85, 67, 72, 69, 86, 79, 89, 128,
-    75, 76, 89, 85, 67, 72, 69, 86, 65, 89, 65, 128, 75, 76, 89, 85, 67, 72,
-    69, 86, 65, 89, 193, 75, 76, 89, 85, 67, 72, 69, 80, 79, 86, 79, 68, 78,
-    89, 128, 75, 76, 89, 85, 67, 72, 69, 80, 79, 86, 79, 68, 78, 65, 89, 65,
-    128, 75, 76, 89, 85, 67, 72, 69, 78, 69, 80, 79, 83, 84, 79, 89, 65, 78,
-    78, 89, 128, 75, 76, 89, 85, 67, 72, 69, 78, 69, 80, 79, 83, 84, 79, 89,
-    65, 78, 78, 65, 89, 65, 128, 75, 76, 89, 85, 67, 72, 128, 75, 76, 73, 84,
-    79, 78, 128, 75, 76, 65, 83, 77, 65, 128, 75, 76, 65, 83, 77, 193, 75,
-    76, 65, 128, 75, 76, 128, 75, 75, 79, 128, 75, 75, 73, 128, 75, 75, 69,
-    69, 128, 75, 75, 69, 128, 75, 75, 65, 128, 75, 75, 128, 75, 74, 69, 128,
-    75, 73, 89, 69, 79, 75, 45, 84, 73, 75, 69, 85, 84, 128, 75, 73, 89, 69,
-    79, 75, 45, 83, 73, 79, 83, 45, 75, 73, 89, 69, 79, 75, 128, 75, 73, 89,
-    69, 79, 75, 45, 82, 73, 69, 85, 76, 128, 75, 73, 89, 69, 79, 75, 45, 80,
-    73, 69, 85, 80, 128, 75, 73, 89, 69, 79, 75, 45, 78, 73, 69, 85, 78, 128,
-    75, 73, 89, 69, 79, 75, 45, 75, 72, 73, 69, 85, 75, 72, 128, 75, 73, 89,
-    69, 79, 75, 45, 67, 72, 73, 69, 85, 67, 72, 128, 75, 73, 89, 69, 79, 203,
-    75, 73, 88, 128, 75, 73, 87, 73, 70, 82, 85, 73, 84, 128, 75, 73, 87,
-    128, 75, 73, 86, 128, 75, 73, 84, 69, 128, 75, 73, 84, 128, 75, 73, 83,
-    83, 73, 78, 199, 75, 73, 83, 83, 128, 75, 73, 83, 211, 75, 73, 83, 73,
-    77, 53, 128, 75, 73, 83, 73, 77, 181, 75, 73, 83, 72, 128, 75, 73, 83,
-    65, 76, 128, 75, 73, 82, 79, 87, 65, 84, 84, 79, 128, 75, 73, 82, 79, 77,
-    69, 69, 84, 79, 82, 85, 128, 75, 73, 82, 79, 71, 85, 82, 65, 77, 85, 128,
-    75, 73, 82, 79, 128, 75, 73, 82, 71, 72, 73, 218, 75, 73, 81, 128, 75,
-    73, 80, 128, 75, 73, 208, 75, 73, 78, 83, 72, 73, 80, 128, 75, 73, 78,
-    78, 193, 75, 73, 78, 68, 69, 82, 71, 65, 82, 84, 69, 78, 128, 75, 73, 77,
-    79, 78, 79, 128, 75, 73, 76, 76, 69, 82, 128, 75, 73, 73, 90, 72, 128,
-    75, 73, 73, 128, 75, 73, 72, 128, 75, 73, 69, 88, 128, 75, 73, 69, 86,
-    65, 206, 75, 73, 69, 80, 128, 75, 73, 69, 69, 77, 128, 75, 73, 69, 128,
-    75, 73, 68, 128, 75, 73, 196, 75, 73, 67, 75, 128, 75, 73, 66, 128, 75,
-    73, 65, 86, 128, 75, 73, 65, 66, 128, 75, 73, 45, 56, 128, 75, 73, 45,
-    55, 128, 75, 73, 45, 54, 128, 75, 73, 45, 53, 128, 75, 73, 45, 52, 128,
-    75, 73, 45, 51, 128, 75, 73, 45, 50, 128, 75, 73, 45, 49, 128, 75, 72,
-    90, 128, 75, 72, 87, 65, 73, 128, 75, 72, 85, 69, 78, 45, 76, 85, 197,
-    75, 72, 85, 69, 206, 75, 72, 85, 68, 65, 87, 65, 68, 201, 75, 72, 85, 68,
-    65, 77, 128, 75, 72, 85, 65, 84, 128, 75, 72, 79, 85, 128, 75, 72, 79,
-    212, 75, 72, 79, 78, 78, 65, 128, 75, 72, 79, 78, 128, 75, 72, 79, 77,
-    85, 84, 128, 75, 72, 79, 75, 72, 76, 79, 205, 75, 72, 79, 74, 75, 201,
-    75, 72, 79, 128, 75, 72, 207, 75, 72, 77, 213, 75, 72, 73, 84, 128, 75,
-    72, 73, 78, 89, 65, 128, 75, 72, 73, 69, 85, 75, 200, 75, 72, 73, 128,
-    75, 72, 201, 75, 72, 72, 79, 128, 75, 72, 72, 65, 128, 75, 72, 69, 84,
-    72, 128, 75, 72, 69, 73, 128, 75, 72, 69, 69, 128, 75, 72, 69, 128, 75,
-    72, 65, 86, 128, 75, 72, 65, 82, 79, 83, 72, 84, 72, 201, 75, 72, 65, 82,
-    128, 75, 72, 65, 80, 72, 128, 75, 72, 65, 78, 199, 75, 72, 65, 78, 68,
-    65, 128, 75, 72, 65, 78, 68, 193, 75, 72, 65, 77, 84, 201, 75, 72, 65,
-    77, 73, 76, 79, 128, 75, 72, 65, 75, 65, 83, 83, 73, 65, 206, 75, 72, 65,
-    73, 128, 75, 72, 65, 72, 128, 75, 72, 65, 200, 75, 72, 65, 70, 128, 75,
-    72, 65, 66, 128, 75, 72, 65, 65, 128, 75, 71, 128, 75, 69, 89, 67, 65,
-    80, 128, 75, 69, 89, 67, 65, 208, 75, 69, 89, 66, 79, 65, 82, 68, 128,
-    75, 69, 89, 66, 79, 65, 82, 196, 75, 69, 88, 128, 75, 69, 86, 128, 75,
-    69, 85, 89, 69, 85, 88, 128, 75, 69, 85, 83, 72, 69, 85, 65, 69, 80, 128,
-    75, 69, 85, 83, 69, 85, 88, 128, 75, 69, 85, 80, 85, 81, 128, 75, 69, 85,
-    79, 212, 75, 69, 85, 77, 128, 75, 69, 85, 75, 69, 85, 84, 78, 68, 65,
-    128, 75, 69, 85, 75, 65, 81, 128, 75, 69, 85, 65, 69, 84, 77, 69, 85, 78,
-    128, 75, 69, 85, 65, 69, 82, 73, 128, 75, 69, 84, 84, 201, 75, 69, 83,
-    72, 50, 128, 75, 69, 82, 69, 84, 128, 75, 69, 79, 87, 128, 75, 69, 78,
-    84, 73, 77, 65, 84, 65, 128, 75, 69, 78, 84, 73, 77, 65, 84, 193, 75, 69,
-    78, 84, 73, 77, 193, 75, 69, 78, 65, 84, 128, 75, 69, 78, 128, 75, 69,
-    206, 75, 69, 77, 80, 85, 76, 128, 75, 69, 77, 80, 85, 204, 75, 69, 77,
-    80, 76, 73, 128, 75, 69, 77, 80, 76, 201, 75, 69, 77, 80, 72, 82, 69, 78,
-    71, 128, 75, 69, 77, 66, 65, 78, 71, 128, 75, 69, 76, 86, 73, 206, 75,
-    69, 72, 69, 72, 128, 75, 69, 72, 69, 200, 75, 69, 72, 128, 75, 69, 70,
-    85, 76, 65, 128, 75, 69, 69, 86, 128, 75, 69, 69, 83, 85, 128, 75, 69,
-    69, 80, 73, 78, 199, 75, 69, 69, 78, 71, 128, 75, 69, 69, 66, 128, 75,
-    69, 66, 128, 75, 69, 65, 65, 69, 128, 75, 67, 65, 76, 128, 75, 66, 128,
-    75, 65, 90, 65, 75, 200, 75, 65, 89, 65, 78, 78, 65, 128, 75, 65, 89, 65,
-    200, 75, 65, 88, 128, 75, 65, 87, 86, 128, 75, 65, 87, 73, 128, 75, 65,
-    87, 201, 75, 65, 87, 66, 128, 75, 65, 86, 89, 75, 65, 128, 75, 65, 86,
-    89, 75, 193, 75, 65, 86, 128, 75, 65, 85, 86, 128, 75, 65, 85, 78, 65,
-    128, 75, 65, 85, 206, 75, 65, 85, 66, 128, 75, 65, 84, 79, 128, 75, 65,
-    84, 72, 73, 83, 84, 73, 128, 75, 65, 84, 72, 65, 75, 193, 75, 65, 84, 65,
-    86, 65, 83, 77, 65, 128, 75, 65, 84, 65, 86, 193, 75, 65, 84, 65, 75, 65,
-    78, 65, 45, 72, 73, 82, 65, 71, 65, 78, 193, 75, 65, 83, 82, 65, 84, 65,
-    78, 128, 75, 65, 83, 82, 65, 84, 65, 206, 75, 65, 83, 82, 65, 128, 75,
-    65, 83, 82, 193, 75, 65, 83, 75, 65, 76, 128, 75, 65, 83, 75, 65, 204,
-    75, 65, 83, 72, 77, 73, 82, 201, 75, 65, 82, 83, 72, 65, 78, 65, 128, 75,
-    65, 82, 79, 82, 73, 73, 128, 75, 65, 82, 79, 82, 65, 78, 128, 75, 65, 82,
-    79, 82, 128, 75, 65, 82, 207, 75, 65, 82, 69, 206, 75, 65, 82, 65, 84,
-    84, 79, 128, 75, 65, 82, 65, 78, 128, 75, 65, 80, 89, 69, 79, 85, 78, 83,
-    83, 65, 78, 71, 80, 73, 69, 85, 80, 128, 75, 65, 80, 89, 69, 79, 85, 78,
-    82, 73, 69, 85, 76, 128, 75, 65, 80, 89, 69, 79, 85, 78, 80, 72, 73, 69,
-    85, 80, 72, 128, 75, 65, 80, 89, 69, 79, 85, 78, 77, 73, 69, 85, 77, 128,
-    75, 65, 80, 80, 65, 128, 75, 65, 80, 80, 193, 75, 65, 80, 79, 128, 75,
-    65, 80, 72, 128, 75, 65, 80, 65, 76, 128, 75, 65, 80, 65, 128, 75, 65,
-    208, 75, 65, 78, 84, 65, 74, 193, 75, 65, 78, 78, 65, 68, 193, 75, 65,
-    78, 71, 65, 82, 79, 79, 128, 75, 65, 78, 71, 128, 75, 65, 78, 199, 75,
-    65, 78, 65, 75, 79, 128, 75, 65, 77, 52, 128, 75, 65, 77, 50, 128, 75,
-    65, 77, 128, 75, 65, 75, 84, 79, 86, 73, 203, 75, 65, 75, 79, 128, 75,
-    65, 75, 65, 66, 65, 84, 128, 75, 65, 75, 128, 75, 65, 203, 75, 65, 73,
-    86, 128, 75, 65, 73, 84, 72, 201, 75, 65, 73, 82, 73, 128, 75, 65, 73,
-    66, 128, 75, 65, 73, 128, 75, 65, 201, 75, 65, 70, 65, 128, 75, 65, 70,
-    128, 75, 65, 198, 75, 65, 68, 53, 128, 75, 65, 68, 181, 75, 65, 68, 52,
-    128, 75, 65, 68, 51, 128, 75, 65, 68, 179, 75, 65, 68, 50, 128, 75, 65,
-    68, 128, 75, 65, 67, 72, 75, 65, 128, 75, 65, 66, 193, 75, 65, 66, 128,
-    75, 65, 65, 86, 128, 75, 65, 65, 73, 128, 75, 65, 65, 70, 85, 128, 75,
-    65, 65, 70, 128, 75, 65, 65, 67, 85, 128, 75, 65, 65, 66, 65, 128, 75,
-    65, 65, 66, 128, 75, 65, 50, 128, 75, 65, 178, 75, 65, 45, 75, 69, 128,
-    75, 65, 45, 57, 128, 75, 65, 45, 56, 128, 75, 65, 45, 55, 128, 75, 65,
-    45, 54, 128, 75, 65, 45, 53, 128, 75, 65, 45, 52, 128, 75, 65, 45, 51,
-    128, 75, 65, 45, 50, 128, 75, 65, 45, 49, 49, 128, 75, 65, 45, 49, 48,
-    128, 75, 65, 45, 49, 128, 75, 48, 48, 56, 128, 75, 48, 48, 55, 128, 75,
-    48, 48, 54, 128, 75, 48, 48, 53, 128, 75, 48, 48, 52, 128, 75, 48, 48,
-    51, 128, 75, 48, 48, 50, 128, 75, 48, 48, 49, 128, 74, 87, 65, 128, 74,
-    85, 85, 128, 74, 85, 84, 128, 74, 85, 83, 84, 73, 70, 73, 67, 65, 84, 73,
-    79, 78, 128, 74, 85, 80, 73, 84, 69, 82, 128, 74, 85, 79, 84, 128, 74,
-    85, 79, 80, 128, 74, 85, 78, 79, 128, 74, 85, 78, 71, 83, 69, 79, 78,
-    199, 74, 85, 78, 69, 128, 74, 85, 76, 89, 128, 74, 85, 71, 71, 76, 73,
-    78, 71, 128, 74, 85, 69, 85, 73, 128, 74, 85, 68, 85, 76, 128, 74, 85,
-    68, 71, 69, 128, 74, 85, 68, 69, 79, 45, 83, 80, 65, 78, 73, 83, 200, 74,
-    79, 89, 83, 84, 73, 67, 75, 128, 74, 79, 89, 79, 85, 211, 74, 79, 89,
-    128, 74, 79, 86, 69, 128, 74, 79, 212, 74, 79, 78, 71, 128, 74, 79, 78,
-    193, 74, 79, 75, 69, 82, 128, 74, 79, 73, 78, 84, 83, 128, 74, 79, 73,
-    78, 69, 68, 128, 74, 79, 73, 78, 128, 74, 79, 65, 128, 74, 78, 89, 65,
-    128, 74, 74, 89, 88, 128, 74, 74, 89, 84, 128, 74, 74, 89, 80, 128, 74,
-    74, 89, 128, 74, 74, 85, 88, 128, 74, 74, 85, 84, 128, 74, 74, 85, 82,
-    88, 128, 74, 74, 85, 82, 128, 74, 74, 85, 80, 128, 74, 74, 85, 79, 88,
-    128, 74, 74, 85, 79, 80, 128, 74, 74, 85, 79, 128, 74, 74, 85, 128, 74,
-    74, 79, 88, 128, 74, 74, 79, 84, 128, 74, 74, 79, 80, 128, 74, 74, 79,
-    128, 74, 74, 73, 88, 128, 74, 74, 73, 84, 128, 74, 74, 73, 80, 128, 74,
-    74, 73, 69, 88, 128, 74, 74, 73, 69, 84, 128, 74, 74, 73, 69, 80, 128,
-    74, 74, 73, 69, 128, 74, 74, 73, 128, 74, 74, 69, 69, 128, 74, 74, 69,
-    128, 74, 74, 65, 128, 74, 73, 76, 128, 74, 73, 73, 77, 128, 74, 73, 73,
-    128, 74, 73, 72, 86, 65, 77, 85, 76, 73, 89, 65, 128, 74, 73, 71, 83, 65,
-    215, 74, 73, 65, 128, 74, 72, 79, 88, 128, 74, 72, 79, 128, 74, 72, 69,
-    72, 128, 74, 72, 65, 89, 73, 78, 128, 74, 72, 65, 78, 128, 74, 72, 65,
-    77, 128, 74, 72, 65, 65, 128, 74, 72, 65, 128, 74, 69, 85, 128, 74, 69,
-    82, 85, 83, 65, 76, 69, 77, 128, 74, 69, 82, 65, 206, 74, 69, 82, 65,
-    128, 74, 69, 82, 128, 74, 69, 76, 76, 89, 70, 73, 83, 72, 128, 74, 69,
-    72, 128, 74, 69, 200, 74, 69, 71, 79, 71, 65, 78, 128, 74, 69, 69, 77,
-    128, 74, 69, 69, 205, 74, 69, 65, 78, 83, 128, 74, 65, 89, 78, 128, 74,
-    65, 89, 73, 78, 128, 74, 65, 89, 65, 78, 78, 65, 128, 74, 65, 87, 128,
-    74, 65, 86, 73, 89, 65, 78, 73, 128, 74, 65, 86, 65, 78, 69, 83, 197, 74,
-    65, 85, 128, 74, 65, 82, 128, 74, 65, 80, 65, 78, 69, 83, 197, 74, 65,
-    80, 65, 78, 128, 74, 65, 78, 85, 65, 82, 89, 128, 74, 65, 76, 76, 65, 74,
-    65, 76, 65, 76, 79, 85, 72, 79, 85, 128, 74, 65, 76, 76, 128, 74, 65, 73,
-    206, 74, 65, 73, 128, 74, 65, 72, 128, 74, 65, 68, 69, 128, 74, 65, 67,
-    75, 83, 128, 74, 65, 67, 75, 45, 79, 45, 76, 65, 78, 84, 69, 82, 78, 128,
-    74, 65, 67, 203, 74, 45, 83, 73, 77, 80, 76, 73, 70, 73, 69, 196, 73, 90,
-    72, 73, 84, 83, 65, 128, 73, 90, 72, 73, 84, 83, 193, 73, 90, 72, 69,
-    128, 73, 90, 65, 75, 65, 89, 193, 73, 89, 69, 75, 128, 73, 89, 65, 78,
-    78, 65, 128, 73, 85, 74, 65, 128, 73, 84, 211, 73, 84, 69, 82, 65, 84,
-    73, 79, 206, 73, 84, 69, 77, 128, 73, 83, 83, 72, 65, 82, 128, 73, 83,
-    79, 83, 67, 69, 76, 69, 211, 73, 83, 79, 78, 128, 73, 83, 79, 206, 73,
-    83, 79, 76, 65, 84, 69, 128, 73, 83, 76, 65, 78, 68, 128, 73, 83, 72, 77,
-    65, 65, 77, 128, 73, 83, 69, 78, 45, 73, 83, 69, 78, 128, 73, 83, 65, 75,
-    73, 193, 73, 83, 45, 80, 73, 76, 76, 65, 128, 73, 82, 85, 89, 65, 78, 78,
-    65, 128, 73, 82, 85, 85, 89, 65, 78, 78, 65, 128, 73, 82, 79, 78, 45, 67,
-    79, 80, 80, 69, 210, 73, 82, 79, 78, 128, 73, 82, 66, 128, 73, 79, 84,
-    73, 70, 73, 69, 196, 73, 79, 84, 65, 84, 69, 196, 73, 79, 84, 65, 128,
-    73, 79, 84, 193, 73, 79, 82, 128, 73, 79, 78, 71, 128, 73, 79, 68, 72,
-    65, 68, 72, 128, 73, 78, 86, 73, 83, 73, 66, 76, 197, 73, 78, 86, 69, 82,
-    84, 69, 68, 128, 73, 78, 86, 69, 82, 84, 69, 196, 73, 78, 86, 69, 82, 84,
-    69, 66, 82, 65, 84, 69, 128, 73, 78, 86, 69, 82, 83, 197, 73, 78, 84, 82,
-    79, 68, 85, 67, 69, 82, 128, 73, 78, 84, 73, 128, 73, 78, 84, 69, 82, 83,
-    89, 76, 76, 65, 66, 73, 195, 73, 78, 84, 69, 82, 83, 69, 67, 84, 73, 79,
-    78, 128, 73, 78, 84, 69, 82, 83, 69, 67, 84, 73, 79, 206, 73, 78, 84, 69,
-    82, 83, 69, 67, 84, 73, 78, 199, 73, 78, 84, 69, 82, 82, 79, 66, 65, 78,
-    71, 128, 73, 78, 84, 69, 82, 82, 79, 66, 65, 78, 199, 73, 78, 84, 69, 82,
-    80, 79, 76, 65, 84, 73, 79, 206, 73, 78, 84, 69, 82, 76, 79, 67, 75, 69,
-    196, 73, 78, 84, 69, 82, 76, 73, 78, 69, 65, 210, 73, 78, 84, 69, 82, 76,
-    65, 67, 69, 196, 73, 78, 84, 69, 82, 73, 79, 210, 73, 78, 84, 69, 82, 69,
-    83, 212, 73, 78, 84, 69, 82, 67, 65, 76, 65, 84, 69, 128, 73, 78, 84, 69,
-    71, 82, 65, 84, 73, 79, 78, 128, 73, 78, 84, 69, 71, 82, 65, 84, 73, 79,
-    206, 73, 78, 84, 69, 71, 82, 65, 76, 128, 73, 78, 84, 69, 71, 82, 65,
-    204, 73, 78, 83, 85, 76, 65, 210, 73, 78, 83, 84, 82, 85, 77, 69, 78, 84,
-    65, 204, 73, 78, 83, 73, 68, 69, 128, 73, 78, 83, 73, 68, 197, 73, 78,
-    83, 69, 82, 84, 73, 79, 206, 73, 78, 83, 69, 82, 212, 73, 78, 83, 69, 67,
-    84, 128, 73, 78, 83, 67, 82, 73, 80, 84, 73, 79, 78, 65, 204, 73, 78, 80,
-    85, 212, 73, 78, 78, 79, 67, 69, 78, 67, 69, 128, 73, 78, 78, 78, 128,
-    73, 78, 78, 69, 82, 128, 73, 78, 78, 69, 210, 73, 78, 78, 128, 73, 78,
-    73, 78, 71, 85, 128, 73, 78, 72, 73, 66, 73, 212, 73, 78, 72, 69, 82, 69,
-    78, 212, 73, 78, 72, 65, 76, 69, 128, 73, 78, 71, 87, 65, 90, 128, 73,
-    78, 70, 79, 82, 77, 65, 84, 73, 79, 206, 73, 78, 70, 76, 85, 69, 78, 67,
-    69, 128, 73, 78, 70, 73, 78, 73, 84, 89, 128, 73, 78, 70, 73, 78, 73, 84,
-    217, 73, 78, 68, 85, 83, 84, 82, 73, 65, 204, 73, 78, 68, 73, 82, 69, 67,
-    212, 73, 78, 68, 73, 67, 84, 73, 79, 206, 73, 78, 68, 73, 67, 65, 84, 79,
-    82, 128, 73, 78, 68, 73, 67, 65, 84, 79, 210, 73, 78, 68, 73, 195, 73,
-    78, 68, 73, 65, 206, 73, 78, 68, 69, 88, 128, 73, 78, 68, 69, 80, 69, 78,
-    68, 69, 78, 212, 73, 78, 67, 82, 69, 77, 69, 78, 84, 128, 73, 78, 67, 82,
-    69, 65, 83, 69, 211, 73, 78, 67, 82, 69, 65, 83, 69, 128, 73, 78, 67, 82,
-    69, 65, 83, 197, 73, 78, 67, 79, 77, 80, 76, 69, 84, 197, 73, 78, 67, 79,
-    77, 73, 78, 199, 73, 78, 67, 76, 85, 68, 73, 78, 199, 73, 78, 67, 72,
-    128, 73, 78, 66, 79, 216, 73, 78, 65, 80, 128, 73, 78, 45, 65, 76, 65,
-    70, 128, 73, 77, 80, 69, 82, 73, 65, 204, 73, 77, 80, 69, 82, 70, 69, 67,
-    84, 85, 205, 73, 77, 80, 69, 82, 70, 69, 67, 84, 65, 128, 73, 77, 80, 69,
-    82, 70, 69, 67, 84, 193, 73, 77, 78, 128, 73, 77, 73, 83, 69, 79, 211,
-    73, 77, 73, 78, 51, 128, 73, 77, 73, 78, 128, 73, 77, 73, 206, 73, 77,
-    73, 70, 84, 72, 79, 82, 79, 78, 128, 73, 77, 73, 70, 84, 72, 79, 82, 65,
-    128, 73, 77, 73, 70, 79, 78, 79, 78, 128, 73, 77, 73, 68, 73, 65, 82, 71,
-    79, 78, 128, 73, 77, 65, 71, 197, 73, 77, 65, 65, 76, 65, 128, 73, 76,
-    85, 89, 65, 78, 78, 65, 128, 73, 76, 85, 89, 128, 73, 76, 85, 85, 89, 65,
-    78, 78, 65, 128, 73, 76, 85, 84, 128, 73, 76, 73, 77, 77, 85, 52, 128,
-    73, 76, 73, 77, 77, 85, 51, 128, 73, 76, 73, 77, 77, 85, 128, 73, 76, 73,
-    77, 77, 213, 73, 76, 50, 128, 73, 75, 73, 82, 128, 73, 75, 65, 82, 65,
-    128, 73, 75, 65, 82, 193, 73, 74, 128, 73, 73, 89, 65, 78, 78, 65, 128,
-    73, 71, 73, 128, 73, 71, 201, 73, 71, 71, 87, 83, 128, 73, 70, 73, 78,
-    128, 73, 69, 85, 78, 71, 45, 84, 73, 75, 69, 85, 84, 128, 73, 69, 85, 78,
-    71, 45, 84, 72, 73, 69, 85, 84, 72, 128, 73, 69, 85, 78, 71, 45, 82, 73,
-    69, 85, 76, 128, 73, 69, 85, 78, 71, 45, 80, 73, 69, 85, 80, 128, 73, 69,
-    85, 78, 71, 45, 80, 72, 73, 69, 85, 80, 72, 128, 73, 69, 85, 78, 71, 45,
-    67, 73, 69, 85, 67, 128, 73, 69, 85, 78, 71, 45, 67, 72, 73, 69, 85, 67,
-    72, 128, 73, 69, 85, 78, 199, 73, 68, 76, 69, 128, 73, 68, 73, 77, 128,
-    73, 68, 73, 205, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 68, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 68, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 68, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 68, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 68, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 68, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 68, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 68, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 68, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 68, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 67, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 67, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 67, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 67, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 67, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 67, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 67, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 67, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 67, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 66, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 66, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 66, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 66, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 66, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 66, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 66, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 66, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 66, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 66, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 65, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 65, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 65, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 65, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 65, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 65, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 65, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 65, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 57, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 57, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 57, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 57, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 57, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 57, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 57, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 57, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 57, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 56, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 56, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 56, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 56, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 56, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 56, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 56, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 56, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 56, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 56, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 55, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 55, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 55, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 55, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 55, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 55, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 55, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 55, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 54, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 54, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 54, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 54, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 54, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 54, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 54, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 54, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 54, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 54, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 54, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 54, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 54, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 54, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 53, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 53, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 53, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 53, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 53, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 53, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 53, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 53, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 52, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 52, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 52, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 52, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 52, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 52, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 52, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 52, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 52, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 51, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 51, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 51, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 51, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 51, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 51, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 51, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 51, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 51, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 51, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 50, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 50, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 50, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 50, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 50, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 50, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 50, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 50, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 49, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 49, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 49, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 49, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 49, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 49, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 49, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 49, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 49, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 48, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 48, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 48, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 48, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 48, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 48, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 65, 48, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 65, 48, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 65, 48, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    65, 48, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 70, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 70, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 70, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 70, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 70, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 70, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 70, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 70, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 69, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 69, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 69, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 69, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 69, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 69, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 69, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 69, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 69, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 68, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 68, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 68, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 68, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 68, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 68, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 68, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 68, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 68, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 68, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 67, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 67, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 67, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 67, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 67, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 67, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 67, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 67, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 66, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 66, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 66, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 66, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 66, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 66, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 66, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 66, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 66, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 65, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 65, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 65, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 65, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 65, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 65, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 65, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 65, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 65, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 65, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 57, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 57, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 57, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 57, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 57, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 57, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 57, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 57, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 56, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 56, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 56, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 56, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 56, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 56, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 56, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 56, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 56, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 55, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 55, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 55, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 55, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 55, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 55, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 55, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 55, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 55, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 55, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 54, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 54, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 54, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 54, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 54, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 54, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 54, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 54, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 53, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 53, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 53, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 53, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 53, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 53, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 53, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 53, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 53, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 52, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 52, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 52, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 52, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 52, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 52, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 52, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 52, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 52, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 52, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 51, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 51, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 51, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 51, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 51, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 51, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 51, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 51, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 50, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 50, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 50, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 50, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 50, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 54, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 50, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 50, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 50, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 50, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 49, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 49, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 49, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 65, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 49, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 49, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 49, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 52, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 49, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 49, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 49, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 49, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 69, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 48, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 48, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 48, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 56, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 48, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 70, 57, 48, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70,
-    57, 48, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 50, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 70, 57, 48, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 70, 57, 48, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 57, 49, 52, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 57,
-    48, 52, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 56, 68, 55, 48,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 56, 67, 65, 57, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 56, 57, 69, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 55, 68, 52, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 55, 65, 55, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 55,
-    57, 56, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 55, 54, 68, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 55, 53, 51, 51, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 55, 53, 49, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 55, 49, 50, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 55, 48, 66, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54,
-    70, 49, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54, 69, 56, 48,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54, 55, 50, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 54, 55, 48, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 54, 55, 48, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 54, 54, 50, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54,
-    53, 66, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54, 53, 57, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54, 53, 53, 55, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 54, 51, 53, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 54, 51, 48, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 54, 50, 57, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54,
-    50, 53, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 54, 50, 52, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53, 70, 56, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 53, 68, 69, 54, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 53, 66, 56, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 53, 66, 53, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53,
-    57, 50, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53, 57, 49, 65,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53, 56, 70, 48, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 53, 53, 66, 54, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 53, 52, 51, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 53, 52, 48, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53,
-    51, 70, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53, 51, 67, 67,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53, 50, 68, 68, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 53, 50, 55, 50, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 53, 50, 52, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 53, 50, 49, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 53,
-    49, 56, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 52, 69, 65, 52,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 52, 69, 56, 67, 128, 73, 68,
-    69, 79, 71, 82, 65, 80, 72, 45, 52, 69, 50, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 52, 69, 48, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80,
-    72, 45, 52, 69, 48, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 65, 49, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65,
-    49, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 65, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 57, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 56, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 65, 49, 55, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 65, 49, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 65, 49, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 65, 49, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65,
-    49, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 50,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 49, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 49, 48, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 48, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 65, 48, 69, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 65, 48, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 65, 48, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 65, 48, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65,
-    48, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 48, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 48, 56, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 48, 55, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 48, 54, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 65, 48, 53, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 65, 48, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 65, 48, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 65, 48, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65,
-    48, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 65, 48, 48,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 70, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 69, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 70, 67, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 70, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 70, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 70, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    70, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 54, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 53, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 70, 52, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 70, 51, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 70, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 70, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 70, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    69, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 69,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 68, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 67, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 69, 65, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 69, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 69, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 69, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    69, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 52, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 51, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 69, 50, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 69, 49, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 69, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 68, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 68, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    68, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 67,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 66, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 65, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 68, 56, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 68, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 68, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 68, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    68, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 50, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 49, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 68, 48, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 67, 70, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 67, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 67, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 67, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    67, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 67, 65,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 67, 57, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 67, 56, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 67, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 67, 54, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 67, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 67, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 67, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    67, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 67, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 67, 48, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 66, 70, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 66, 69, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 66, 68, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 66, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 66, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 66, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    66, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 66, 56,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 66, 55, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 66, 54, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 66, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 66, 52, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 66, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 66, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 66, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    66, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 69, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 68, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 67, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 65, 66, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 65, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 65, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 65, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    65, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 54,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 53, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 52, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 65, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 65, 50, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 65, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 65, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 57, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    57, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 67, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 66, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 65, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 57, 57, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 57, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 57, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 57, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    57, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 52,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 51, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 50, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 57, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 57, 48, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 56, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 56, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 56, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    56, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 65, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 57, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 56, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 56, 55, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 56, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 56, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 56, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    56, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 50,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 49, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 56, 48, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 55, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 55, 69, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 55, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 55, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 55, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    55, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 55, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 55, 56, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 55, 55, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 55, 54, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 55, 53, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 55, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 55, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 55, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    55, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 55, 48,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 70, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 69, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 54, 67, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 54, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 54, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 54, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    54, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 54, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 53, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 54, 52, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 54, 51, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 54, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 54, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 54, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    53, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 69,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 68, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 67, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 53, 65, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 53, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 53, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 53, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    53, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 52, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 51, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 53, 50, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 53, 49, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 53, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 52, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 52, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    52, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 67,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 66, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 65, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 52, 56, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 52, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 52, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 52, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    52, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 50, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 49, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 52, 48, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 51, 70, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 51, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 51, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 51, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    51, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 51, 65,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 51, 57, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 51, 56, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 51, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 51, 54, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 51, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 51, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 51, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    51, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 51, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 51, 48, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 50, 70, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 50, 69, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 50, 68, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 50, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 50, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 50, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    50, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 50, 56,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 50, 55, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 50, 54, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 50, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 50, 52, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 50, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 50, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 50, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    50, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 69, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 68, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 67, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 49, 66, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 49, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 49, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 49, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    49, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 54,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 53, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 52, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 49, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 49, 50, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 49, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 49, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 48, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    48, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 67, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 66, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 65, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 48, 57, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 57, 48, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 57, 48, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 57, 48, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57,
-    48, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 52,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 51, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 50, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 57, 48, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 57, 48, 48, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 70, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 70, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 70, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    70, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 65, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 57, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 56, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 70, 55, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 70, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 70, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 70, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    70, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 50,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 49, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 70, 48, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 69, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 69, 69, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 69, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 69, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 69, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    69, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 69, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 69, 56, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 69, 55, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 69, 54, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 69, 53, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 69, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 69, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 69, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    69, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 69, 48,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 70, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 69, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 68, 67, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 68, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 68, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 68, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    68, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 54, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 53, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 68, 52, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 68, 51, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 68, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 68, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 68, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    67, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 69,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 68, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 67, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 67, 65, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 67, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 67, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 67, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    67, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 52, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 51, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 67, 50, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 67, 49, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 67, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 66, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 66, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    66, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 67,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 66, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 65, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 66, 56, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 66, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 66, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 66, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    66, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 50, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 49, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 66, 48, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 65, 70, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 65, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 65, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 65, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    65, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 65, 65,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 65, 57, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 65, 56, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 65, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 65, 54, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 65, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 65, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 65, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    65, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 65, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 65, 48, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 57, 70, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 57, 69, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 57, 68, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 57, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 57, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 57, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    57, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 57, 56,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 57, 55, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 57, 54, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 57, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 57, 52, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 57, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 57, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 57, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    57, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 70,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 69, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 68, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 67, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 56, 66, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 56, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 56, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 56, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    56, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 54,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 53, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 52, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 56, 51, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 56, 50, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 56, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 56, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 55, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    55, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 68,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 67, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 66, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 65, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 55, 57, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 55, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 55, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 55, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    55, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 52,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 51, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 50, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 55, 49, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 55, 48, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 54, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 54, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 54, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    54, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 66,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 65, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 57, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 56, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 54, 55, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 54, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 54, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 54, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    54, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 50,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 49, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 54, 48, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 53, 70, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 53, 69, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 53, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 53, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 53, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    53, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 53, 57,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 53, 56, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 53, 55, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 53, 54, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 53, 53, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 53, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 53, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 53, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    53, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 53, 48,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 70, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 69, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 68, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 52, 67, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 52, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 52, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 52, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    52, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 55,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 54, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 53, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 52, 52, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 52, 51, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 52, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 52, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 52, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    51, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 69,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 68, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 67, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 66, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 51, 65, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 51, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 51, 56, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 51, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    51, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 53,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 52, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 51, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 51, 50, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 51, 49, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 51, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 50, 70, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 50, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    50, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 67,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 66, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 65, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 57, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 50, 56, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 50, 55, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 50, 54, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 50, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    50, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 51,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 50, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 49, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 50, 48, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 49, 70, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 49, 69, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 49, 68, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 49, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    49, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 49, 65,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 49, 57, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 49, 56, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 49, 55, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 49, 54, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 49, 53, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 49, 52, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 49, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    49, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 49, 49,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 49, 48, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 48, 70, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 48, 69, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 48, 68, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 48, 67, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 48, 66, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 48, 65, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    48, 57, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 48, 56,
-    128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 48, 55, 128, 73,
-    68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 48, 54, 128, 73, 68, 69,
-    79, 71, 82, 65, 80, 72, 45, 50, 70, 56, 48, 53, 128, 73, 68, 69, 79, 71,
-    82, 65, 80, 72, 45, 50, 70, 56, 48, 52, 128, 73, 68, 69, 79, 71, 82, 65,
-    80, 72, 45, 50, 70, 56, 48, 51, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72,
-    45, 50, 70, 56, 48, 50, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50,
-    70, 56, 48, 49, 128, 73, 68, 69, 79, 71, 82, 65, 80, 72, 45, 50, 70, 56,
-    48, 48, 128, 73, 68, 69, 79, 71, 82, 65, 80, 200, 73, 68, 69, 78, 84, 73,
-    70, 73, 67, 65, 84, 73, 79, 78, 128, 73, 68, 69, 78, 84, 73, 70, 73, 67,
-    65, 84, 73, 79, 206, 73, 68, 69, 78, 84, 73, 67, 65, 204, 73, 68, 68,
-    128, 73, 67, 79, 78, 128, 73, 67, 72, 79, 85, 128, 73, 67, 72, 79, 83,
-    128, 73, 67, 72, 73, 77, 65, 84, 79, 83, 128, 73, 67, 72, 65, 68, 73, 78,
-    128, 73, 67, 69, 76, 65, 78, 68, 73, 67, 45, 89, 82, 128, 73, 66, 73, 70,
-    73, 76, 73, 128, 73, 65, 85, 68, 65, 128, 73, 48, 49, 53, 128, 73, 48,
-    49, 52, 128, 73, 48, 49, 51, 128, 73, 48, 49, 50, 128, 73, 48, 49, 49,
-    65, 128, 73, 48, 49, 49, 128, 73, 48, 49, 48, 65, 128, 73, 48, 49, 48,
-    128, 73, 48, 48, 57, 65, 128, 73, 48, 48, 57, 128, 73, 48, 48, 56, 128,
-    73, 48, 48, 55, 128, 73, 48, 48, 54, 128, 73, 48, 48, 53, 65, 128, 73,
-    48, 48, 53, 128, 73, 48, 48, 52, 128, 73, 48, 48, 51, 128, 73, 48, 48,
-    50, 128, 73, 48, 48, 49, 128, 73, 45, 89, 85, 128, 73, 45, 89, 79, 128,
-    73, 45, 89, 69, 79, 128, 73, 45, 89, 69, 128, 73, 45, 89, 65, 69, 128,
-    73, 45, 89, 65, 45, 79, 128, 73, 45, 89, 65, 128, 73, 45, 79, 45, 73,
-    128, 73, 45, 79, 128, 73, 45, 69, 85, 128, 73, 45, 66, 69, 65, 77, 128,
-    73, 45, 65, 82, 65, 69, 65, 128, 73, 45, 65, 128, 72, 90, 90, 90, 71,
-    128, 72, 90, 90, 90, 128, 72, 90, 90, 80, 128, 72, 90, 90, 128, 72, 90,
-    87, 71, 128, 72, 90, 87, 128, 72, 90, 84, 128, 72, 90, 71, 128, 72, 89,
-    83, 84, 69, 82, 69, 83, 73, 211, 72, 89, 80, 79, 68, 73, 65, 83, 84, 79,
-    76, 69, 128, 72, 89, 80, 72, 69, 78, 65, 84, 73, 79, 206, 72, 89, 80, 72,
-    69, 78, 45, 77, 73, 78, 85, 83, 128, 72, 89, 80, 72, 69, 78, 128, 72, 89,
-    80, 72, 69, 206, 72, 89, 71, 73, 69, 73, 65, 128, 72, 89, 71, 73, 69, 65,
-    128, 72, 89, 65, 67, 73, 78, 84, 72, 128, 72, 88, 87, 71, 128, 72, 88,
-    85, 79, 88, 128, 72, 88, 85, 79, 84, 128, 72, 88, 85, 79, 80, 128, 72,
-    88, 85, 79, 128, 72, 88, 79, 88, 128, 72, 88, 79, 84, 128, 72, 88, 79,
-    80, 128, 72, 88, 79, 128, 72, 88, 73, 88, 128, 72, 88, 73, 84, 128, 72,
-    88, 73, 80, 128, 72, 88, 73, 69, 88, 128, 72, 88, 73, 69, 84, 128, 72,
-    88, 73, 69, 80, 128, 72, 88, 73, 69, 128, 72, 88, 73, 128, 72, 88, 69,
-    88, 128, 72, 88, 69, 80, 128, 72, 88, 69, 128, 72, 88, 65, 88, 128, 72,
-    88, 65, 84, 128, 72, 88, 65, 80, 128, 72, 88, 65, 128, 72, 87, 85, 128,
-    72, 87, 65, 73, 82, 128, 72, 87, 65, 72, 128, 72, 85, 86, 65, 128, 72,
-    85, 83, 72, 69, 196, 72, 85, 83, 72, 128, 72, 85, 82, 65, 78, 128, 72,
-    85, 79, 84, 128, 72, 85, 78, 68, 82, 69, 68, 83, 128, 72, 85, 78, 68, 82,
-    69, 68, 211, 72, 85, 78, 68, 82, 69, 68, 128, 72, 85, 78, 68, 82, 69,
-    196, 72, 85, 78, 128, 72, 85, 77, 208, 72, 85, 77, 65, 78, 128, 72, 85,
-    77, 65, 206, 72, 85, 76, 50, 128, 72, 85, 73, 73, 84, 79, 128, 72, 85,
-    71, 71, 73, 78, 71, 128, 72, 85, 71, 71, 73, 78, 199, 72, 85, 66, 50,
-    128, 72, 85, 66, 178, 72, 85, 66, 128, 72, 85, 65, 82, 65, 68, 68, 79,
-    128, 72, 85, 65, 78, 128, 72, 85, 45, 51, 128, 72, 85, 45, 50, 128, 72,
-    85, 45, 49, 128, 72, 84, 84, 65, 128, 72, 84, 83, 128, 72, 84, 74, 128,
-    72, 82, 89, 86, 78, 73, 193, 72, 80, 87, 71, 128, 72, 80, 65, 128, 72,
-    80, 128, 72, 79, 85, 83, 197, 72, 79, 85, 82, 71, 76, 65, 83, 83, 128,
-    72, 79, 85, 82, 71, 76, 65, 83, 211, 72, 79, 85, 82, 128, 72, 79, 85,
-    210, 72, 79, 84, 69, 76, 128, 72, 79, 84, 65, 128, 72, 79, 83, 80, 73,
-    84, 65, 76, 128, 72, 79, 82, 83, 69, 128, 72, 79, 82, 83, 197, 72, 79,
-    82, 82, 128, 72, 79, 82, 78, 83, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65,
-    76, 76, 89, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 76, 217, 72, 79,
-    82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 54, 45, 48, 54, 128, 72, 79, 82,
-    73, 90, 79, 78, 84, 65, 76, 45, 48, 54, 45, 48, 53, 128, 72, 79, 82, 73,
-    90, 79, 78, 84, 65, 76, 45, 48, 54, 45, 48, 52, 128, 72, 79, 82, 73, 90,
-    79, 78, 84, 65, 76, 45, 48, 54, 45, 48, 51, 128, 72, 79, 82, 73, 90, 79,
-    78, 84, 65, 76, 45, 48, 54, 45, 48, 50, 128, 72, 79, 82, 73, 90, 79, 78,
-    84, 65, 76, 45, 48, 54, 45, 48, 49, 128, 72, 79, 82, 73, 90, 79, 78, 84,
-    65, 76, 45, 48, 54, 45, 48, 48, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65,
-    76, 45, 48, 53, 45, 48, 54, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76,
-    45, 48, 53, 45, 48, 53, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45,
-    48, 53, 45, 48, 52, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48,
-    53, 45, 48, 51, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 53,
-    45, 48, 50, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 53, 45,
-    48, 49, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 53, 45, 48,
-    48, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 54,
-    128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 53, 128,
-    72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 52, 128, 72,
-    79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 51, 128, 72, 79,
-    82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 50, 128, 72, 79, 82,
-    73, 90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 49, 128, 72, 79, 82, 73,
-    90, 79, 78, 84, 65, 76, 45, 48, 52, 45, 48, 48, 128, 72, 79, 82, 73, 90,
-    79, 78, 84, 65, 76, 45, 48, 51, 45, 48, 54, 128, 72, 79, 82, 73, 90, 79,
-    78, 84, 65, 76, 45, 48, 51, 45, 48, 53, 128, 72, 79, 82, 73, 90, 79, 78,
-    84, 65, 76, 45, 48, 51, 45, 48, 52, 128, 72, 79, 82, 73, 90, 79, 78, 84,
-    65, 76, 45, 48, 51, 45, 48, 51, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65,
-    76, 45, 48, 51, 45, 48, 50, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76,
-    45, 48, 51, 45, 48, 49, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45,
-    48, 51, 45, 48, 48, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48,
-    50, 45, 48, 54, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 50,
-    45, 48, 53, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 50, 45,
-    48, 52, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 50, 45, 48,
-    51, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 50, 45, 48, 50,
-    128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 50, 45, 48, 49, 128,
-    72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 50, 45, 48, 48, 128, 72,
-    79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 49, 45, 48, 54, 128, 72, 79,
-    82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 49, 45, 48, 53, 128, 72, 79, 82,
-    73, 90, 79, 78, 84, 65, 76, 45, 48, 49, 45, 48, 52, 128, 72, 79, 82, 73,
-    90, 79, 78, 84, 65, 76, 45, 48, 49, 45, 48, 51, 128, 72, 79, 82, 73, 90,
-    79, 78, 84, 65, 76, 45, 48, 49, 45, 48, 50, 128, 72, 79, 82, 73, 90, 79,
-    78, 84, 65, 76, 45, 48, 49, 45, 48, 49, 128, 72, 79, 82, 73, 90, 79, 78,
-    84, 65, 76, 45, 48, 49, 45, 48, 48, 128, 72, 79, 82, 73, 90, 79, 78, 84,
-    65, 76, 45, 48, 48, 45, 48, 54, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65,
-    76, 45, 48, 48, 45, 48, 53, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76,
-    45, 48, 48, 45, 48, 52, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45,
-    48, 48, 45, 48, 51, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48,
-    48, 45, 48, 50, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 48,
-    45, 48, 49, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 45, 48, 48, 45,
-    48, 48, 128, 72, 79, 82, 73, 90, 79, 78, 84, 65, 76, 128, 72, 79, 82, 73,
-    90, 79, 78, 84, 65, 204, 72, 79, 82, 73, 128, 72, 79, 82, 193, 72, 79,
-    79, 85, 128, 72, 79, 79, 82, 85, 128, 72, 79, 79, 80, 128, 72, 79, 79,
-    78, 128, 72, 79, 79, 75, 69, 68, 128, 72, 79, 79, 75, 69, 196, 72, 79,
-    78, 69, 89, 66, 69, 69, 128, 72, 79, 78, 69, 217, 72, 79, 77, 79, 84, 72,
-    69, 84, 73, 67, 128, 72, 79, 77, 79, 84, 72, 69, 84, 73, 195, 72, 79, 76,
-    79, 128, 72, 79, 76, 76, 79, 215, 72, 79, 76, 69, 128, 72, 79, 76, 68,
-    73, 78, 199, 72, 79, 76, 65, 77, 128, 72, 79, 76, 65, 205, 72, 79, 75,
-    65, 128, 72, 79, 67, 75, 69, 217, 72, 79, 67, 72, 79, 128, 72, 79, 45,
-    56, 128, 72, 79, 45, 55, 128, 72, 79, 45, 54, 128, 72, 79, 45, 53, 128,
-    72, 79, 45, 52, 128, 72, 79, 45, 51, 128, 72, 79, 45, 50, 128, 72, 79,
-    45, 49, 128, 72, 78, 85, 84, 128, 72, 78, 85, 79, 88, 128, 72, 78, 85,
-    79, 128, 72, 78, 85, 66, 128, 72, 78, 79, 88, 128, 72, 78, 79, 84, 128,
-    72, 78, 79, 80, 128, 72, 78, 73, 88, 128, 72, 78, 73, 84, 128, 72, 78,
-    73, 80, 128, 72, 78, 73, 69, 88, 128, 72, 78, 73, 69, 84, 128, 72, 78,
-    73, 69, 80, 128, 72, 78, 73, 69, 128, 72, 78, 73, 128, 72, 78, 69, 88,
-    128, 72, 78, 69, 80, 128, 72, 78, 69, 128, 72, 78, 65, 88, 128, 72, 78,
-    65, 85, 128, 72, 78, 65, 84, 128, 72, 78, 65, 80, 128, 72, 78, 65, 128,
-    72, 77, 89, 88, 128, 72, 77, 89, 82, 88, 128, 72, 77, 89, 82, 128, 72,
-    77, 89, 80, 128, 72, 77, 89, 128, 72, 77, 85, 88, 128, 72, 77, 85, 84,
-    128, 72, 77, 85, 82, 88, 128, 72, 77, 85, 82, 128, 72, 77, 85, 80, 128,
-    72, 77, 85, 79, 88, 128, 72, 77, 85, 79, 80, 128, 72, 77, 85, 79, 128,
-    72, 77, 85, 128, 72, 77, 79, 88, 128, 72, 77, 79, 84, 128, 72, 77, 79,
-    80, 128, 72, 77, 79, 128, 72, 77, 73, 88, 128, 72, 77, 73, 84, 128, 72,
-    77, 73, 80, 128, 72, 77, 73, 69, 88, 128, 72, 77, 73, 69, 80, 128, 72,
-    77, 73, 69, 128, 72, 77, 73, 128, 72, 77, 69, 128, 72, 77, 65, 88, 128,
-    72, 77, 65, 84, 128, 72, 77, 65, 80, 128, 72, 77, 65, 128, 72, 76, 89,
-    88, 128, 72, 76, 89, 84, 128, 72, 76, 89, 82, 88, 128, 72, 76, 89, 82,
-    128, 72, 76, 89, 80, 128, 72, 76, 89, 128, 72, 76, 85, 88, 128, 72, 76,
-    85, 84, 128, 72, 76, 85, 82, 88, 128, 72, 76, 85, 82, 128, 72, 76, 85,
-    80, 128, 72, 76, 85, 79, 88, 128, 72, 76, 85, 79, 80, 128, 72, 76, 85,
-    79, 128, 72, 76, 85, 128, 72, 76, 79, 88, 128, 72, 76, 79, 80, 128, 72,
-    76, 79, 128, 72, 76, 73, 88, 128, 72, 76, 73, 84, 128, 72, 76, 73, 80,
-    128, 72, 76, 73, 69, 88, 128, 72, 76, 73, 69, 80, 128, 72, 76, 73, 69,
-    128, 72, 76, 73, 128, 72, 76, 69, 88, 128, 72, 76, 69, 80, 128, 72, 76,
-    69, 128, 72, 76, 65, 88, 128, 72, 76, 65, 85, 128, 72, 76, 65, 84, 128,
-    72, 76, 65, 80, 128, 72, 76, 65, 128, 72, 76, 128, 72, 75, 128, 72, 73,
-    90, 66, 128, 72, 73, 89, 79, 128, 72, 73, 84, 84, 73, 78, 199, 72, 73,
-    83, 84, 79, 82, 73, 195, 72, 73, 82, 73, 81, 128, 72, 73, 80, 80, 79, 80,
-    79, 84, 65, 77, 85, 83, 128, 72, 73, 78, 71, 69, 68, 128, 72, 73, 78, 71,
-    69, 196, 72, 73, 78, 71, 69, 128, 72, 73, 78, 68, 213, 72, 73, 75, 73,
-    78, 199, 72, 73, 71, 72, 45, 83, 80, 69, 69, 196, 72, 73, 71, 72, 45, 82,
-    69, 86, 69, 82, 83, 69, 68, 45, 185, 72, 73, 71, 72, 45, 76, 79, 215, 72,
-    73, 71, 72, 45, 72, 69, 69, 76, 69, 196, 72, 73, 69, 88, 128, 72, 73, 69,
-    85, 72, 45, 83, 73, 79, 83, 128, 72, 73, 69, 85, 72, 45, 82, 73, 69, 85,
-    76, 128, 72, 73, 69, 85, 72, 45, 80, 73, 69, 85, 80, 128, 72, 73, 69, 85,
-    72, 45, 78, 73, 69, 85, 78, 128, 72, 73, 69, 85, 72, 45, 77, 73, 69, 85,
-    77, 128, 72, 73, 69, 85, 200, 72, 73, 69, 82, 79, 71, 76, 89, 80, 72, 73,
-    195, 72, 73, 68, 73, 78, 199, 72, 73, 68, 69, 84, 128, 72, 73, 68, 69,
-    128, 72, 73, 66, 73, 83, 67, 85, 83, 128, 72, 73, 45, 82, 69, 83, 128,
-    72, 73, 45, 55, 128, 72, 73, 45, 54, 128, 72, 73, 45, 53, 128, 72, 73,
-    45, 52, 128, 72, 73, 45, 51, 128, 72, 73, 45, 50, 128, 72, 73, 45, 49,
-    128, 72, 72, 89, 85, 128, 72, 72, 89, 79, 128, 72, 72, 89, 73, 128, 72,
-    72, 89, 69, 69, 128, 72, 72, 89, 69, 128, 72, 72, 89, 65, 65, 128, 72,
-    72, 89, 65, 128, 72, 72, 87, 73, 128, 72, 72, 87, 69, 69, 128, 72, 72,
-    87, 69, 128, 72, 72, 87, 65, 128, 72, 72, 85, 128, 72, 72, 73, 128, 72,
-    72, 69, 69, 128, 72, 72, 69, 128, 72, 72, 65, 65, 128, 72, 71, 128, 72,
-    69, 89, 84, 128, 72, 69, 88, 73, 70, 79, 82, 205, 72, 69, 88, 65, 71, 82,
-    65, 205, 72, 69, 88, 65, 71, 79, 78, 128, 72, 69, 82, 85, 84, 85, 128,
-    72, 69, 82, 85, 128, 72, 69, 82, 77, 73, 84, 73, 65, 206, 72, 69, 82, 77,
-    73, 79, 78, 73, 65, 206, 72, 69, 82, 77, 69, 83, 128, 72, 69, 82, 69,
-    128, 72, 69, 82, 66, 128, 72, 69, 82, 65, 69, 85, 205, 72, 69, 78, 71,
-    128, 72, 69, 78, 199, 72, 69, 77, 80, 128, 72, 69, 76, 77, 69, 84, 128,
-    72, 69, 76, 77, 69, 212, 72, 69, 76, 205, 72, 69, 76, 76, 83, 67, 72, 82,
-    69, 73, 66, 69, 210, 72, 69, 76, 73, 88, 128, 72, 69, 76, 73, 67, 79, 80,
-    84, 69, 82, 128, 72, 69, 75, 85, 84, 65, 65, 82, 85, 128, 72, 69, 73, 83,
-    69, 73, 128, 72, 69, 73, 71, 72, 84, 128, 72, 69, 69, 73, 128, 72, 69,
-    68, 71, 69, 72, 79, 71, 128, 72, 69, 65, 86, 89, 128, 72, 69, 65, 86, 69,
-    78, 76, 217, 72, 69, 65, 86, 69, 78, 128, 72, 69, 65, 86, 69, 206, 72,
-    69, 65, 82, 84, 83, 128, 72, 69, 65, 82, 84, 45, 83, 72, 65, 80, 69, 196,
-    72, 69, 65, 82, 84, 128, 72, 69, 65, 82, 212, 72, 69, 65, 82, 73, 78,
-    199, 72, 69, 65, 82, 45, 78, 79, 45, 69, 86, 73, 204, 72, 69, 65, 68, 83,
-    84, 82, 79, 75, 69, 128, 72, 69, 65, 68, 83, 84, 79, 78, 69, 128, 72, 69,
-    65, 68, 83, 84, 79, 78, 197, 72, 69, 65, 68, 83, 67, 65, 82, 70, 128, 72,
-    69, 65, 68, 80, 72, 79, 78, 69, 128, 72, 69, 65, 68, 73, 78, 71, 128, 72,
-    69, 65, 68, 45, 66, 65, 78, 68, 65, 71, 69, 128, 72, 69, 45, 55, 128, 72,
-    69, 45, 54, 128, 72, 69, 45, 53, 128, 72, 69, 45, 52, 128, 72, 69, 45,
-    51, 128, 72, 69, 45, 50, 128, 72, 69, 45, 49, 128, 72, 68, 82, 128, 72,
-    67, 128, 72, 66, 65, 83, 65, 45, 69, 83, 65, 83, 193, 72, 66, 65, 83,
-    193, 72, 65, 89, 65, 78, 78, 65, 128, 72, 65, 87, 74, 128, 72, 65, 86,
-    69, 128, 72, 65, 85, 80, 84, 83, 84, 73, 77, 77, 69, 128, 72, 65, 85, 77,
-    69, 65, 128, 72, 65, 213, 72, 65, 84, 82, 65, 206, 72, 65, 84, 72, 73,
-    128, 72, 65, 84, 69, 128, 72, 65, 84, 67, 72, 73, 78, 199, 72, 65, 84,
-    65, 198, 72, 65, 83, 69, 210, 72, 65, 83, 65, 78, 84, 65, 128, 72, 65,
-    82, 80, 79, 79, 78, 128, 72, 65, 82, 80, 79, 79, 206, 72, 65, 82, 77, 79,
-    78, 73, 67, 128, 72, 65, 82, 75, 76, 69, 65, 206, 72, 65, 82, 68, 78, 69,
-    83, 83, 128, 72, 65, 82, 196, 72, 65, 82, 66, 65, 72, 65, 89, 128, 72,
-    65, 80, 80, 217, 72, 65, 78, 85, 78, 79, 207, 72, 65, 78, 73, 70, 201,
-    72, 65, 78, 71, 90, 72, 79, 213, 72, 65, 78, 68, 83, 72, 65, 75, 69, 128,
-    72, 65, 78, 68, 83, 128, 72, 65, 78, 68, 211, 72, 65, 78, 68, 76, 69, 83,
-    128, 72, 65, 78, 68, 76, 69, 128, 72, 65, 78, 68, 66, 65, 76, 76, 128,
-    72, 65, 78, 68, 66, 65, 71, 128, 72, 65, 78, 68, 45, 79, 86, 65, 76, 128,
-    72, 65, 78, 68, 45, 79, 86, 65, 204, 72, 65, 78, 68, 45, 72, 79, 79, 75,
-    128, 72, 65, 78, 68, 45, 72, 79, 79, 203, 72, 65, 78, 68, 45, 72, 73, 78,
-    71, 69, 128, 72, 65, 78, 68, 45, 72, 73, 78, 71, 197, 72, 65, 78, 68, 45,
-    70, 76, 65, 84, 128, 72, 65, 78, 68, 45, 70, 76, 65, 212, 72, 65, 78, 68,
-    45, 70, 73, 83, 84, 128, 72, 65, 78, 68, 45, 67, 85, 82, 76, 73, 67, 85,
-    69, 128, 72, 65, 78, 68, 45, 67, 85, 82, 76, 73, 67, 85, 197, 72, 65, 78,
-    68, 45, 67, 85, 80, 128, 72, 65, 78, 68, 45, 67, 85, 208, 72, 65, 78, 68,
-    45, 67, 76, 65, 87, 128, 72, 65, 78, 68, 45, 67, 76, 65, 215, 72, 65, 78,
-    68, 45, 67, 73, 82, 67, 76, 69, 128, 72, 65, 78, 68, 45, 67, 73, 82, 67,
-    76, 197, 72, 65, 78, 68, 45, 65, 78, 71, 76, 69, 128, 72, 65, 78, 68, 45,
-    65, 78, 71, 76, 197, 72, 65, 78, 68, 128, 72, 65, 78, 45, 65, 75, 65, 84,
-    128, 72, 65, 77, 90, 65, 128, 72, 65, 77, 90, 193, 72, 65, 77, 83, 84,
-    69, 210, 72, 65, 77, 83, 65, 128, 72, 65, 77, 77, 69, 82, 128, 72, 65,
-    77, 77, 69, 210, 72, 65, 77, 66, 85, 82, 71, 69, 82, 128, 72, 65, 76, 81,
-    65, 128, 72, 65, 76, 79, 128, 72, 65, 76, 70, 45, 67, 73, 82, 67, 76,
-    197, 72, 65, 76, 70, 45, 50, 128, 72, 65, 76, 70, 45, 49, 128, 72, 65,
-    76, 70, 128, 72, 65, 76, 66, 69, 82, 68, 128, 72, 65, 76, 65, 78, 84, 65,
-    128, 72, 65, 73, 84, 85, 128, 72, 65, 73, 211, 72, 65, 73, 82, 67, 85,
-    84, 128, 72, 65, 71, 76, 65, 218, 72, 65, 71, 76, 128, 72, 65, 70, 85,
-    75, 72, 65, 128, 72, 65, 70, 85, 75, 72, 128, 72, 65, 69, 71, 204, 72,
-    65, 68, 69, 83, 128, 72, 65, 65, 82, 85, 128, 72, 65, 65, 77, 128, 72,
-    65, 193, 72, 65, 45, 72, 65, 128, 72, 65, 45, 57, 128, 72, 65, 45, 56,
-    128, 72, 65, 45, 55, 128, 72, 65, 45, 54, 128, 72, 65, 45, 53, 128, 72,
-    65, 45, 52, 128, 72, 65, 45, 51, 128, 72, 65, 45, 50, 128, 72, 65, 45,
-    49, 49, 128, 72, 65, 45, 49, 48, 128, 72, 65, 45, 49, 128, 72, 48, 48,
-    56, 128, 72, 48, 48, 55, 128, 72, 48, 48, 54, 65, 128, 72, 48, 48, 54,
-    128, 72, 48, 48, 53, 128, 72, 48, 48, 52, 128, 72, 48, 48, 51, 128, 72,
-    48, 48, 50, 128, 72, 48, 48, 49, 128, 72, 45, 84, 89, 80, 197, 71, 89,
-    85, 128, 71, 89, 79, 78, 128, 71, 89, 79, 128, 71, 89, 73, 128, 71, 89,
-    70, 213, 71, 89, 69, 69, 128, 71, 89, 65, 83, 128, 71, 89, 65, 65, 128,
-    71, 89, 65, 128, 71, 89, 128, 71, 87, 85, 128, 71, 87, 73, 128, 71, 87,
-    69, 69, 128, 71, 87, 69, 128, 71, 87, 65, 65, 128, 71, 87, 65, 128, 71,
-    87, 128, 71, 86, 65, 78, 71, 128, 71, 86, 128, 71, 85, 82, 85, 83, 72,
-    128, 71, 85, 82, 85, 78, 128, 71, 85, 82, 77, 85, 75, 72, 201, 71, 85,
-    82, 65, 77, 85, 84, 79, 78, 128, 71, 85, 82, 65, 71, 197, 71, 85, 82, 55,
-    128, 71, 85, 78, 85, 128, 71, 85, 78, 213, 71, 85, 78, 74, 65, 76, 193,
-    71, 85, 205, 71, 85, 76, 128, 71, 85, 74, 65, 82, 65, 84, 201, 71, 85,
-    73, 84, 65, 82, 128, 71, 85, 73, 68, 197, 71, 85, 199, 71, 85, 69, 73,
-    128, 71, 85, 69, 72, 128, 71, 85, 69, 200, 71, 85, 68, 128, 71, 85, 196,
-    71, 85, 65, 82, 68, 83, 77, 65, 78, 128, 71, 85, 65, 82, 68, 69, 68, 78,
-    69, 83, 83, 128, 71, 85, 65, 82, 68, 69, 196, 71, 85, 65, 82, 68, 128,
-    71, 85, 65, 82, 65, 78, 201, 71, 85, 193, 71, 85, 178, 71, 84, 69, 210,
-    71, 83, 85, 77, 128, 71, 83, 85, 205, 71, 82, 213, 71, 82, 79, 87, 73,
-    78, 199, 71, 82, 79, 85, 78, 68, 128, 71, 82, 79, 78, 84, 72, 73, 83, 77,
-    65, 84, 65, 128, 71, 82, 79, 77, 79, 80, 79, 86, 79, 68, 78, 65, 89, 65,
-    128, 71, 82, 79, 77, 79, 80, 79, 86, 79, 68, 78, 65, 89, 193, 71, 82, 79,
-    77, 79, 75, 82, 89, 90, 72, 69, 86, 65, 89, 65, 128, 71, 82, 79, 77, 79,
-    75, 82, 89, 90, 72, 69, 86, 65, 89, 193, 71, 82, 79, 77, 78, 65, 89, 65,
-    128, 71, 82, 79, 77, 78, 65, 89, 193, 71, 82, 73, 78, 78, 73, 78, 199,
-    71, 82, 73, 77, 65, 67, 73, 78, 199, 71, 82, 69, 217, 71, 82, 69, 71, 79,
-    82, 73, 65, 206, 71, 82, 69, 69, 78, 128, 71, 82, 69, 69, 206, 71, 82,
-    69, 65, 84, 78, 69, 83, 83, 128, 71, 82, 69, 65, 84, 69, 82, 45, 84, 72,
-    65, 78, 128, 71, 82, 69, 65, 84, 69, 82, 45, 84, 72, 65, 206, 71, 82, 69,
-    65, 84, 69, 210, 71, 82, 69, 65, 212, 71, 82, 65, 86, 69, 89, 65, 82,
-    196, 71, 82, 65, 86, 69, 45, 77, 65, 67, 82, 79, 78, 128, 71, 82, 65, 86,
-    69, 45, 65, 67, 85, 84, 69, 45, 71, 82, 65, 86, 69, 128, 71, 82, 65, 86,
-    197, 71, 82, 65, 84, 69, 82, 128, 71, 82, 65, 83, 83, 128, 71, 82, 65,
-    83, 211, 71, 82, 65, 83, 208, 71, 82, 65, 80, 72, 69, 77, 197, 71, 82,
-    65, 80, 69, 83, 128, 71, 82, 65, 78, 84, 72, 193, 71, 82, 65, 77, 77,
-    193, 71, 82, 65, 73, 78, 128, 71, 82, 65, 70, 128, 71, 82, 65, 68, 85,
-    65, 84, 73, 79, 206, 71, 82, 65, 68, 85, 65, 76, 128, 71, 82, 65, 67, 69,
-    128, 71, 82, 65, 67, 197, 71, 80, 65, 128, 71, 79, 82, 84, 72, 77, 73,
-    75, 79, 206, 71, 79, 82, 84, 128, 71, 79, 82, 73, 76, 76, 65, 128, 71,
-    79, 82, 71, 79, 84, 69, 82, 73, 128, 71, 79, 82, 71, 79, 83, 89, 78, 84,
-    72, 69, 84, 79, 78, 128, 71, 79, 82, 71, 79, 206, 71, 79, 82, 71, 73,
-    128, 71, 79, 82, 65, 90, 68, 207, 71, 79, 82, 65, 128, 71, 79, 79, 83,
-    69, 128, 71, 79, 79, 196, 71, 79, 78, 71, 71, 79, 78, 71, 128, 71, 79,
-    76, 85, 66, 67, 72, 73, 203, 71, 79, 76, 70, 69, 82, 128, 71, 79, 76, 68,
-    128, 71, 79, 75, 128, 71, 79, 73, 78, 199, 71, 79, 71, 71, 76, 69, 83,
-    128, 71, 79, 66, 76, 73, 78, 128, 71, 79, 65, 76, 128, 71, 79, 65, 204,
-    71, 79, 65, 128, 71, 78, 89, 73, 83, 128, 71, 78, 65, 86, 73, 89, 65, 78,
-    73, 128, 71, 76, 79, 87, 73, 78, 199, 71, 76, 79, 86, 69, 83, 128, 71,
-    76, 79, 86, 69, 128, 71, 76, 79, 84, 84, 65, 204, 71, 76, 79, 66, 197,
-    71, 76, 73, 83, 83, 65, 78, 68, 207, 71, 76, 69, 73, 67, 200, 71, 76, 65,
-    71, 79, 76, 73, 128, 71, 76, 65, 128, 71, 74, 69, 128, 71, 73, 88, 128,
-    71, 73, 84, 128, 71, 73, 83, 72, 128, 71, 73, 83, 200, 71, 73, 83, 65,
-    76, 128, 71, 73, 82, 85, 68, 65, 65, 128, 71, 73, 82, 76, 211, 71, 73,
-    82, 76, 128, 71, 73, 82, 65, 70, 70, 197, 71, 73, 82, 51, 128, 71, 73,
-    82, 179, 71, 73, 82, 50, 128, 71, 73, 82, 178, 71, 73, 80, 128, 71, 73,
-    78, 73, 73, 128, 71, 73, 78, 71, 69, 210, 71, 73, 77, 69, 76, 45, 72, 69,
-    84, 72, 128, 71, 73, 77, 69, 76, 128, 71, 73, 77, 69, 204, 71, 73, 77,
-    128, 71, 73, 71, 65, 128, 71, 73, 71, 128, 71, 73, 70, 212, 71, 73, 69,
-    84, 128, 71, 73, 68, 73, 77, 128, 71, 73, 66, 66, 79, 85, 211, 71, 73,
-    66, 65, 128, 71, 73, 52, 128, 71, 73, 180, 71, 72, 90, 128, 71, 72, 87,
-    65, 128, 71, 72, 85, 78, 78, 65, 128, 71, 72, 85, 78, 78, 193, 71, 72,
-    85, 128, 71, 72, 79, 85, 128, 71, 72, 79, 83, 84, 128, 71, 72, 79, 128,
-    71, 72, 73, 77, 69, 76, 128, 71, 72, 73, 128, 71, 72, 72, 65, 128, 71,
-    72, 69, 89, 83, 128, 71, 72, 69, 85, 88, 128, 71, 72, 69, 85, 78, 128,
-    71, 72, 69, 85, 71, 72, 69, 85, 65, 69, 77, 128, 71, 72, 69, 85, 71, 72,
-    69, 78, 128, 71, 72, 69, 85, 65, 69, 82, 65, 69, 128, 71, 72, 69, 85, 65,
-    69, 71, 72, 69, 85, 65, 69, 128, 71, 72, 69, 84, 128, 71, 72, 69, 69,
-    128, 71, 72, 69, 128, 71, 72, 197, 71, 72, 65, 89, 78, 128, 71, 72, 65,
-    82, 65, 69, 128, 71, 72, 65, 80, 128, 71, 72, 65, 78, 128, 71, 72, 65,
-    77, 77, 65, 128, 71, 72, 65, 77, 65, 76, 128, 71, 72, 65, 73, 78, 85,
-    128, 71, 72, 65, 73, 78, 128, 71, 72, 65, 73, 206, 71, 72, 65, 68, 128,
-    71, 72, 65, 65, 77, 65, 69, 128, 71, 72, 65, 65, 128, 71, 71, 87, 73,
-    128, 71, 71, 87, 69, 69, 128, 71, 71, 87, 69, 128, 71, 71, 87, 65, 65,
-    128, 71, 71, 87, 65, 128, 71, 71, 85, 88, 128, 71, 71, 85, 84, 128, 71,
-    71, 85, 82, 88, 128, 71, 71, 85, 82, 128, 71, 71, 85, 79, 88, 128, 71,
-    71, 85, 79, 84, 128, 71, 71, 85, 79, 80, 128, 71, 71, 85, 79, 128, 71,
-    71, 79, 88, 128, 71, 71, 79, 84, 128, 71, 71, 79, 80, 128, 71, 71, 73,
-    88, 128, 71, 71, 73, 84, 128, 71, 71, 73, 69, 88, 128, 71, 71, 73, 69,
-    80, 128, 71, 71, 73, 69, 128, 71, 71, 69, 88, 128, 71, 71, 69, 84, 128,
-    71, 71, 69, 80, 128, 71, 71, 65, 88, 128, 71, 71, 65, 84, 128, 71, 69,
-    84, 193, 71, 69, 83, 84, 85, 82, 69, 128, 71, 69, 83, 72, 85, 128, 71,
-    69, 83, 72, 84, 73, 78, 128, 71, 69, 83, 72, 84, 73, 206, 71, 69, 83, 72,
-    50, 128, 71, 69, 82, 83, 72, 65, 89, 73, 77, 128, 71, 69, 82, 77, 65,
-    206, 71, 69, 82, 69, 83, 72, 128, 71, 69, 82, 69, 83, 200, 71, 69, 79,
-    77, 69, 84, 82, 73, 67, 65, 76, 76, 217, 71, 69, 79, 77, 69, 84, 82, 73,
-    195, 71, 69, 78, 84, 76, 197, 71, 69, 78, 73, 84, 73, 86, 69, 128, 71,
-    69, 78, 73, 75, 201, 71, 69, 78, 73, 69, 128, 71, 69, 78, 69, 82, 73,
-    195, 71, 69, 78, 69, 82, 65, 76, 128, 71, 69, 77, 73, 78, 73, 128, 71,
-    69, 77, 73, 78, 65, 84, 73, 79, 206, 71, 69, 77, 73, 78, 65, 84, 197, 71,
-    69, 205, 71, 69, 69, 77, 128, 71, 69, 68, 79, 76, 65, 128, 71, 69, 68,
-    69, 128, 71, 69, 66, 207, 71, 69, 66, 193, 71, 69, 65, 82, 128, 71, 69,
-    65, 210, 71, 69, 50, 50, 128, 71, 68, 65, 78, 128, 71, 67, 73, 71, 128,
-    71, 67, 65, 206, 71, 66, 79, 78, 128, 71, 66, 73, 69, 197, 71, 66, 69,
-    85, 88, 128, 71, 66, 69, 84, 128, 71, 66, 65, 89, 73, 128, 71, 66, 65,
-    75, 85, 82, 85, 78, 69, 78, 128, 71, 66, 128, 71, 65, 89, 65, 78, 85, 75,
-    73, 84, 84, 65, 128, 71, 65, 89, 65, 78, 78, 65, 128, 71, 65, 89, 128,
-    71, 65, 85, 78, 84, 76, 69, 84, 128, 71, 65, 84, 72, 69, 82, 73, 78, 71,
-    128, 71, 65, 84, 72, 69, 82, 73, 78, 199, 71, 65, 84, 69, 128, 71, 65,
-    83, 72, 65, 78, 128, 71, 65, 82, 83, 72, 85, 78, 73, 128, 71, 65, 82, 79,
-    78, 128, 71, 65, 82, 77, 69, 78, 84, 128, 71, 65, 82, 76, 73, 67, 128,
-    71, 65, 82, 68, 69, 78, 128, 71, 65, 82, 51, 128, 71, 65, 80, 80, 69,
-    196, 71, 65, 208, 71, 65, 78, 77, 65, 128, 71, 65, 78, 71, 73, 65, 128,
-    71, 65, 78, 68, 193, 71, 65, 78, 50, 128, 71, 65, 78, 178, 71, 65, 77,
-    77, 65, 128, 71, 65, 77, 76, 65, 128, 71, 65, 77, 76, 128, 71, 65, 77,
-    69, 128, 71, 65, 77, 197, 71, 65, 77, 65, 78, 128, 71, 65, 77, 65, 76,
-    128, 71, 65, 77, 65, 204, 71, 65, 76, 201, 71, 65, 71, 128, 71, 65, 70,
-    128, 71, 65, 198, 71, 65, 69, 84, 84, 65, 45, 80, 73, 76, 76, 65, 128,
-    71, 65, 68, 79, 76, 128, 71, 65, 68, 128, 71, 65, 196, 71, 65, 66, 65,
-    128, 71, 65, 66, 193, 71, 65, 65, 70, 85, 128, 71, 65, 178, 71, 48, 53,
-    52, 128, 71, 48, 53, 51, 128, 71, 48, 53, 50, 128, 71, 48, 53, 49, 128,
-    71, 48, 53, 48, 128, 71, 48, 52, 57, 128, 71, 48, 52, 56, 128, 71, 48,
-    52, 55, 128, 71, 48, 52, 54, 128, 71, 48, 52, 53, 65, 128, 71, 48, 52,
-    53, 128, 71, 48, 52, 52, 128, 71, 48, 52, 51, 65, 128, 71, 48, 52, 51,
-    128, 71, 48, 52, 50, 128, 71, 48, 52, 49, 128, 71, 48, 52, 48, 128, 71,
-    48, 51, 57, 128, 71, 48, 51, 56, 128, 71, 48, 51, 55, 65, 128, 71, 48,
-    51, 55, 128, 71, 48, 51, 54, 65, 128, 71, 48, 51, 54, 128, 71, 48, 51,
-    53, 128, 71, 48, 51, 52, 128, 71, 48, 51, 51, 128, 71, 48, 51, 50, 128,
-    71, 48, 51, 49, 128, 71, 48, 51, 48, 128, 71, 48, 50, 57, 128, 71, 48,
-    50, 56, 128, 71, 48, 50, 55, 128, 71, 48, 50, 54, 65, 128, 71, 48, 50,
-    54, 128, 71, 48, 50, 53, 128, 71, 48, 50, 52, 128, 71, 48, 50, 51, 128,
-    71, 48, 50, 50, 128, 71, 48, 50, 49, 128, 71, 48, 50, 48, 65, 128, 71,
-    48, 50, 48, 128, 71, 48, 49, 57, 128, 71, 48, 49, 56, 128, 71, 48, 49,
-    55, 128, 71, 48, 49, 54, 128, 71, 48, 49, 53, 128, 71, 48, 49, 52, 128,
-    71, 48, 49, 51, 128, 71, 48, 49, 50, 128, 71, 48, 49, 49, 65, 128, 71,
-    48, 49, 49, 128, 71, 48, 49, 48, 128, 71, 48, 48, 57, 128, 71, 48, 48,
-    56, 128, 71, 48, 48, 55, 66, 128, 71, 48, 48, 55, 65, 128, 71, 48, 48,
-    55, 128, 71, 48, 48, 54, 65, 128, 71, 48, 48, 54, 128, 71, 48, 48, 53,
-    128, 71, 48, 48, 52, 128, 71, 48, 48, 51, 128, 71, 48, 48, 50, 128, 71,
-    48, 48, 49, 128, 70, 89, 88, 128, 70, 89, 84, 128, 70, 89, 80, 128, 70,
-    89, 65, 128, 70, 87, 73, 128, 70, 87, 69, 69, 128, 70, 87, 69, 128, 70,
-    87, 65, 65, 128, 70, 87, 65, 128, 70, 86, 83, 52, 128, 70, 86, 83, 51,
-    128, 70, 86, 83, 50, 128, 70, 86, 83, 49, 128, 70, 85, 88, 128, 70, 85,
-    84, 128, 70, 85, 83, 69, 128, 70, 85, 83, 193, 70, 85, 82, 88, 128, 70,
-    85, 80, 128, 70, 85, 78, 69, 82, 65, 204, 70, 85, 78, 67, 84, 73, 79, 78,
-    65, 204, 70, 85, 78, 67, 84, 73, 79, 78, 128, 70, 85, 76, 76, 87, 73, 68,
-    84, 200, 70, 85, 76, 76, 78, 69, 83, 83, 128, 70, 85, 76, 204, 70, 85,
-    74, 73, 128, 70, 85, 69, 84, 128, 70, 85, 69, 204, 70, 85, 69, 128, 70,
-    85, 65, 128, 70, 84, 72, 79, 82, 193, 70, 83, 73, 128, 70, 82, 79, 87,
-    78, 73, 78, 71, 128, 70, 82, 79, 87, 78, 73, 78, 199, 70, 82, 79, 87, 78,
-    128, 70, 82, 79, 87, 206, 70, 82, 79, 78, 84, 45, 84, 73, 76, 84, 69,
-    196, 70, 82, 79, 78, 84, 45, 70, 65, 67, 73, 78, 199, 70, 82, 79, 78,
-    212, 70, 82, 79, 205, 70, 82, 79, 71, 128, 70, 82, 79, 199, 70, 82, 73,
-    84, 85, 128, 70, 82, 73, 69, 83, 128, 70, 82, 73, 69, 196, 70, 82, 73,
-    67, 65, 84, 73, 86, 69, 128, 70, 82, 69, 84, 66, 79, 65, 82, 68, 128, 70,
-    82, 69, 78, 67, 200, 70, 82, 69, 69, 90, 73, 78, 199, 70, 82, 69, 69,
-    128, 70, 82, 69, 197, 70, 82, 65, 78, 75, 211, 70, 82, 65, 78, 195, 70,
-    82, 65, 77, 69, 83, 128, 70, 82, 65, 77, 69, 128, 70, 82, 65, 77, 197,
-    70, 82, 65, 75, 84, 85, 210, 70, 82, 65, 71, 82, 65, 78, 84, 128, 70, 82,
-    65, 71, 77, 69, 78, 84, 128, 70, 82, 65, 67, 84, 73, 79, 206, 70, 79, 88,
-    128, 70, 79, 216, 70, 79, 85, 82, 84, 69, 69, 78, 128, 70, 79, 85, 82,
-    84, 69, 69, 206, 70, 79, 85, 82, 45, 84, 72, 73, 82, 84, 89, 128, 70, 79,
-    85, 82, 45, 83, 84, 82, 73, 78, 199, 70, 79, 85, 82, 45, 80, 69, 82, 45,
-    69, 205, 70, 79, 85, 82, 45, 76, 73, 78, 197, 70, 79, 85, 210, 70, 79,
-    85, 78, 84, 65, 73, 78, 128, 70, 79, 85, 78, 84, 65, 73, 206, 70, 79, 83,
-    84, 69, 82, 73, 78, 71, 128, 70, 79, 82, 87, 65, 82, 68, 128, 70, 79, 82,
-    87, 65, 82, 196, 70, 79, 82, 84, 89, 45, 70, 73, 86, 197, 70, 79, 82, 84,
-    89, 128, 70, 79, 82, 84, 217, 70, 79, 82, 84, 85, 78, 69, 128, 70, 79,
-    82, 84, 85, 78, 197, 70, 79, 82, 84, 73, 69, 84, 72, 128, 70, 79, 82, 84,
-    69, 128, 70, 79, 82, 77, 211, 70, 79, 82, 77, 69, 69, 128, 70, 79, 82,
-    77, 69, 197, 70, 79, 82, 77, 65, 84, 84, 73, 78, 71, 128, 70, 79, 82, 77,
-    65, 212, 70, 79, 82, 75, 69, 196, 70, 79, 82, 69, 72, 69, 65, 196, 70,
-    79, 82, 67, 69, 83, 128, 70, 79, 82, 67, 69, 128, 70, 79, 80, 128, 70,
-    79, 79, 84, 83, 84, 79, 79, 76, 128, 70, 79, 79, 84, 80, 82, 73, 78, 84,
-    83, 128, 70, 79, 79, 84, 78, 79, 84, 197, 70, 79, 79, 84, 66, 65, 76, 76,
-    128, 70, 79, 79, 84, 128, 70, 79, 79, 76, 128, 70, 79, 79, 68, 128, 70,
-    79, 79, 128, 70, 79, 78, 212, 70, 79, 78, 71, 77, 65, 78, 128, 70, 79,
-    78, 68, 85, 69, 128, 70, 79, 77, 128, 70, 79, 76, 76, 89, 128, 70, 79,
-    76, 76, 79, 87, 73, 78, 71, 128, 70, 79, 76, 68, 73, 78, 199, 70, 79, 76,
-    68, 69, 82, 128, 70, 79, 76, 68, 69, 196, 70, 79, 71, 71, 89, 128, 70,
-    79, 71, 128, 70, 207, 70, 77, 128, 70, 76, 89, 73, 78, 199, 70, 76, 89,
-    128, 70, 76, 85, 84, 84, 69, 82, 73, 78, 71, 128, 70, 76, 85, 84, 84, 69,
-    82, 73, 78, 199, 70, 76, 85, 84, 69, 128, 70, 76, 85, 83, 72, 69, 196,
-    70, 76, 79, 87, 73, 78, 199, 70, 76, 79, 87, 69, 82, 83, 128, 70, 76, 79,
-    87, 69, 210, 70, 76, 79, 85, 82, 73, 83, 72, 128, 70, 76, 79, 82, 69, 84,
-    84, 69, 128, 70, 76, 79, 82, 65, 204, 70, 76, 79, 80, 80, 217, 70, 76,
-    79, 79, 82, 128, 70, 76, 79, 79, 210, 70, 76, 73, 80, 128, 70, 76, 73,
-    71, 72, 84, 128, 70, 76, 73, 67, 203, 70, 76, 69, 88, 85, 83, 128, 70,
-    76, 69, 88, 69, 196, 70, 76, 69, 88, 128, 70, 76, 69, 85, 82, 79, 78,
-    128, 70, 76, 69, 85, 82, 45, 68, 69, 45, 76, 73, 83, 128, 70, 76, 65, 84,
-    84, 69, 78, 69, 196, 70, 76, 65, 84, 78, 69, 83, 83, 128, 70, 76, 65, 84,
-    66, 82, 69, 65, 68, 128, 70, 76, 65, 83, 72, 128, 70, 76, 65, 77, 73, 78,
-    71, 79, 128, 70, 76, 65, 77, 69, 128, 70, 76, 65, 71, 83, 128, 70, 76,
-    65, 71, 45, 53, 128, 70, 76, 65, 71, 45, 52, 128, 70, 76, 65, 71, 45, 51,
-    128, 70, 76, 65, 71, 45, 50, 128, 70, 76, 65, 71, 45, 49, 128, 70, 76,
-    65, 71, 128, 70, 76, 65, 199, 70, 76, 65, 128, 70, 76, 128, 70, 73, 88,
-    69, 68, 45, 70, 79, 82, 205, 70, 73, 88, 128, 70, 73, 86, 69, 45, 84, 72,
-    73, 82, 84, 89, 128, 70, 73, 86, 69, 45, 76, 73, 78, 197, 70, 73, 86, 69,
-    45, 76, 73, 75, 197, 70, 73, 84, 90, 80, 65, 84, 82, 73, 67, 203, 70, 73,
-    84, 65, 128, 70, 73, 84, 128, 70, 73, 83, 84, 69, 196, 70, 73, 83, 72,
-    73, 78, 199, 70, 73, 83, 72, 72, 79, 79, 75, 128, 70, 73, 83, 72, 72, 79,
-    79, 203, 70, 73, 83, 72, 69, 89, 69, 128, 70, 73, 83, 200, 70, 73, 82,
-    83, 212, 70, 73, 82, 73, 128, 70, 73, 82, 69, 87, 79, 82, 75, 83, 128,
-    70, 73, 82, 69, 87, 79, 82, 203, 70, 73, 82, 69, 67, 82, 65, 67, 75, 69,
-    82, 128, 70, 73, 82, 69, 128, 70, 73, 82, 197, 70, 73, 80, 128, 70, 73,
-    78, 73, 84, 197, 70, 73, 78, 71, 69, 82, 83, 128, 70, 73, 78, 71, 69, 82,
-    211, 70, 73, 78, 71, 69, 82, 78, 65, 73, 76, 83, 128, 70, 73, 78, 71, 69,
-    82, 69, 196, 70, 73, 78, 71, 69, 82, 45, 80, 79, 83, 212, 70, 73, 78, 71,
-    69, 82, 128, 70, 73, 78, 71, 69, 210, 70, 73, 78, 65, 78, 67, 73, 65, 76,
-    128, 70, 73, 78, 65, 76, 128, 70, 73, 76, 205, 70, 73, 76, 76, 69, 82,
-    45, 50, 128, 70, 73, 76, 76, 69, 82, 45, 49, 128, 70, 73, 76, 76, 69, 82,
-    128, 70, 73, 76, 76, 69, 196, 70, 73, 76, 76, 128, 70, 73, 76, 204, 70,
-    73, 76, 197, 70, 73, 73, 128, 70, 73, 71, 85, 82, 69, 45, 51, 128, 70,
-    73, 71, 85, 82, 69, 45, 50, 128, 70, 73, 71, 85, 82, 69, 45, 49, 128, 70,
-    73, 71, 85, 82, 69, 128, 70, 73, 71, 85, 82, 197, 70, 73, 71, 72, 84,
-    128, 70, 73, 70, 84, 89, 128, 70, 73, 70, 84, 217, 70, 73, 70, 84, 72,
-    83, 128, 70, 73, 70, 84, 72, 128, 70, 73, 70, 84, 69, 69, 78, 128, 70,
-    73, 70, 84, 69, 69, 206, 70, 73, 69, 76, 68, 128, 70, 73, 69, 76, 196,
-    70, 72, 84, 79, 82, 193, 70, 70, 76, 128, 70, 70, 73, 128, 70, 69, 85,
-    88, 128, 70, 69, 85, 70, 69, 85, 65, 69, 84, 128, 70, 69, 84, 72, 128,
-    70, 69, 83, 84, 73, 86, 65, 76, 128, 70, 69, 82, 82, 89, 128, 70, 69, 82,
-    82, 73, 211, 70, 69, 82, 77, 65, 84, 65, 128, 70, 69, 82, 77, 65, 84,
-    193, 70, 69, 79, 200, 70, 69, 78, 199, 70, 69, 78, 67, 69, 82, 128, 70,
-    69, 78, 67, 69, 128, 70, 69, 77, 73, 78, 73, 78, 197, 70, 69, 77, 65, 76,
-    69, 128, 70, 69, 77, 65, 76, 197, 70, 69, 76, 76, 79, 87, 83, 72, 73, 80,
-    128, 70, 69, 73, 128, 70, 69, 72, 213, 70, 69, 72, 128, 70, 69, 200, 70,
-    69, 69, 78, 71, 128, 70, 69, 69, 77, 128, 70, 69, 69, 68, 128, 70, 69,
-    69, 196, 70, 69, 69, 128, 70, 69, 66, 82, 85, 65, 82, 89, 128, 70, 69,
-    65, 84, 72, 69, 82, 128, 70, 69, 65, 84, 72, 69, 210, 70, 69, 65, 82, 78,
-    128, 70, 69, 65, 82, 70, 85, 204, 70, 69, 65, 82, 128, 70, 65, 89, 65,
-    78, 78, 65, 128, 70, 65, 89, 128, 70, 65, 88, 128, 70, 65, 216, 70, 65,
-    84, 73, 71, 85, 69, 128, 70, 65, 84, 72, 69, 82, 128, 70, 65, 84, 72, 69,
-    210, 70, 65, 84, 72, 65, 84, 65, 78, 128, 70, 65, 84, 72, 65, 84, 65,
-    206, 70, 65, 84, 72, 65, 128, 70, 65, 84, 72, 193, 70, 65, 84, 128, 70,
-    65, 83, 84, 128, 70, 65, 82, 83, 201, 70, 65, 82, 128, 70, 65, 81, 128,
-    70, 65, 80, 128, 70, 65, 78, 71, 128, 70, 65, 78, 69, 82, 79, 83, 73,
-    211, 70, 65, 78, 128, 70, 65, 77, 73, 76, 89, 128, 70, 65, 77, 128, 70,
-    65, 76, 76, 69, 206, 70, 65, 76, 65, 70, 69, 76, 128, 70, 65, 74, 128,
-    70, 65, 73, 82, 89, 128, 70, 65, 73, 76, 85, 82, 69, 128, 70, 65, 73, 72,
-    85, 128, 70, 65, 73, 66, 128, 70, 65, 72, 82, 69, 78, 72, 69, 73, 84,
-    128, 70, 65, 67, 84, 79, 82, 89, 128, 70, 65, 67, 84, 79, 210, 70, 65,
-    67, 83, 73, 77, 73, 76, 197, 70, 65, 67, 73, 78, 71, 83, 128, 70, 65, 67,
-    69, 45, 54, 128, 70, 65, 67, 69, 45, 53, 128, 70, 65, 67, 69, 45, 52,
-    128, 70, 65, 67, 69, 45, 51, 128, 70, 65, 67, 69, 45, 50, 128, 70, 65,
-    67, 69, 45, 49, 128, 70, 65, 65, 77, 65, 69, 128, 70, 65, 65, 73, 128,
-    70, 65, 65, 70, 85, 128, 70, 48, 53, 51, 128, 70, 48, 53, 50, 128, 70,
-    48, 53, 49, 67, 128, 70, 48, 53, 49, 66, 128, 70, 48, 53, 49, 65, 128,
-    70, 48, 53, 49, 128, 70, 48, 53, 48, 128, 70, 48, 52, 57, 128, 70, 48,
-    52, 56, 128, 70, 48, 52, 55, 65, 128, 70, 48, 52, 55, 128, 70, 48, 52,
-    54, 65, 128, 70, 48, 52, 54, 128, 70, 48, 52, 53, 65, 128, 70, 48, 52,
-    53, 128, 70, 48, 52, 52, 128, 70, 48, 52, 51, 128, 70, 48, 52, 50, 128,
-    70, 48, 52, 49, 128, 70, 48, 52, 48, 128, 70, 48, 51, 57, 128, 70, 48,
-    51, 56, 65, 128, 70, 48, 51, 56, 128, 70, 48, 51, 55, 65, 128, 70, 48,
-    51, 55, 128, 70, 48, 51, 54, 128, 70, 48, 51, 53, 128, 70, 48, 51, 52,
-    128, 70, 48, 51, 51, 128, 70, 48, 51, 50, 128, 70, 48, 51, 49, 65, 128,
-    70, 48, 51, 49, 128, 70, 48, 51, 48, 128, 70, 48, 50, 57, 128, 70, 48,
-    50, 56, 128, 70, 48, 50, 55, 128, 70, 48, 50, 54, 128, 70, 48, 50, 53,
-    128, 70, 48, 50, 52, 128, 70, 48, 50, 51, 128, 70, 48, 50, 50, 128, 70,
-    48, 50, 49, 65, 128, 70, 48, 50, 49, 128, 70, 48, 50, 48, 128, 70, 48,
-    49, 57, 128, 70, 48, 49, 56, 128, 70, 48, 49, 55, 128, 70, 48, 49, 54,
-    128, 70, 48, 49, 53, 128, 70, 48, 49, 52, 128, 70, 48, 49, 51, 65, 128,
-    70, 48, 49, 51, 128, 70, 48, 49, 50, 128, 70, 48, 49, 49, 128, 70, 48,
-    49, 48, 128, 70, 48, 48, 57, 128, 70, 48, 48, 56, 128, 70, 48, 48, 55,
-    128, 70, 48, 48, 54, 128, 70, 48, 48, 53, 128, 70, 48, 48, 52, 128, 70,
-    48, 48, 51, 128, 70, 48, 48, 50, 128, 70, 48, 48, 49, 65, 128, 70, 48,
-    48, 49, 128, 69, 90, 83, 128, 69, 90, 69, 78, 128, 69, 90, 69, 206, 69,
-    89, 89, 89, 128, 69, 89, 69, 83, 128, 69, 89, 69, 211, 69, 89, 69, 76,
-    65, 83, 72, 69, 211, 69, 89, 69, 71, 76, 65, 83, 83, 69, 83, 128, 69, 89,
-    69, 71, 65, 90, 69, 45, 87, 65, 76, 76, 80, 76, 65, 78, 197, 69, 89, 69,
-    71, 65, 90, 69, 45, 70, 76, 79, 79, 82, 80, 76, 65, 78, 197, 69, 89, 69,
-    66, 82, 79, 87, 211, 69, 89, 69, 66, 82, 79, 215, 69, 89, 197, 69, 89,
-    66, 69, 89, 70, 73, 76, 73, 128, 69, 89, 65, 78, 78, 65, 128, 69, 88, 84,
-    82, 69, 77, 69, 76, 217, 69, 88, 84, 82, 65, 84, 69, 82, 82, 69, 83, 84,
-    82, 73, 65, 204, 69, 88, 84, 82, 65, 45, 76, 79, 215, 69, 88, 84, 82, 65,
-    45, 72, 73, 71, 200, 69, 88, 84, 82, 193, 69, 88, 84, 73, 78, 71, 85, 73,
-    83, 72, 69, 82, 128, 69, 88, 84, 69, 78, 83, 73, 79, 78, 128, 69, 88, 84,
-    69, 78, 68, 69, 68, 128, 69, 88, 84, 69, 78, 68, 69, 196, 69, 88, 80, 82,
-    69, 83, 83, 73, 79, 78, 76, 69, 83, 211, 69, 88, 80, 79, 78, 69, 78, 212,
-    69, 88, 80, 76, 79, 68, 73, 78, 199, 69, 88, 79, 128, 69, 88, 207, 69,
-    88, 73, 83, 84, 83, 128, 69, 88, 73, 83, 84, 128, 69, 88, 72, 65, 85, 83,
-    84, 73, 79, 78, 128, 69, 88, 72, 65, 76, 69, 128, 69, 88, 67, 76, 65, 77,
-    65, 84, 73, 79, 78, 128, 69, 88, 67, 76, 65, 77, 65, 84, 73, 79, 206, 69,
-    88, 67, 73, 84, 69, 77, 69, 78, 84, 128, 69, 88, 67, 72, 65, 78, 71, 69,
-    128, 69, 88, 67, 69, 83, 83, 128, 69, 88, 67, 69, 76, 76, 69, 78, 84,
-    128, 69, 87, 69, 128, 69, 86, 69, 82, 217, 69, 86, 69, 82, 71, 82, 69,
-    69, 206, 69, 86, 69, 78, 73, 78, 71, 128, 69, 85, 82, 79, 80, 69, 65,
-    206, 69, 85, 82, 79, 80, 69, 45, 65, 70, 82, 73, 67, 65, 128, 69, 85, 82,
-    79, 45, 67, 85, 82, 82, 69, 78, 67, 217, 69, 85, 82, 207, 69, 85, 76, 69,
-    210, 69, 85, 45, 85, 128, 69, 85, 45, 79, 128, 69, 85, 45, 69, 85, 128,
-    69, 85, 45, 69, 79, 128, 69, 85, 45, 69, 128, 69, 85, 45, 65, 128, 69,
-    84, 88, 128, 69, 84, 84, 128, 69, 84, 78, 65, 72, 84, 65, 128, 69, 84,
-    72, 69, 204, 69, 84, 69, 82, 79, 206, 69, 84, 69, 82, 78, 73, 84, 89,
-    128, 69, 84, 69, 82, 78, 73, 84, 217, 69, 84, 66, 128, 69, 83, 90, 128,
-    69, 83, 85, 75, 85, 85, 68, 79, 128, 69, 83, 84, 73, 77, 65, 84, 69, 83,
-    128, 69, 83, 84, 73, 77, 65, 84, 69, 196, 69, 83, 72, 69, 51, 128, 69,
-    83, 72, 50, 49, 128, 69, 83, 72, 49, 54, 128, 69, 83, 67, 65, 80, 69,
-    128, 69, 83, 67, 128, 69, 83, 65, 128, 69, 83, 45, 84, 69, 128, 69, 83,
-    45, 51, 128, 69, 83, 45, 50, 128, 69, 83, 45, 49, 128, 69, 82, 82, 79,
-    82, 45, 66, 65, 82, 82, 69, 196, 69, 82, 82, 128, 69, 82, 73, 211, 69,
-    82, 73, 78, 50, 128, 69, 82, 73, 78, 178, 69, 82, 71, 128, 69, 82, 65,
-    83, 197, 69, 81, 85, 73, 86, 65, 76, 69, 78, 212, 69, 81, 85, 73, 76, 65,
-    84, 69, 82, 65, 204, 69, 81, 85, 73, 72, 79, 80, 80, 69, 82, 128, 69, 81,
-    85, 73, 72, 79, 80, 80, 69, 210, 69, 81, 85, 73, 68, 128, 69, 81, 85, 73,
-    65, 78, 71, 85, 76, 65, 210, 69, 81, 85, 65, 76, 83, 128, 69, 81, 85, 65,
-    76, 211, 69, 81, 85, 65, 76, 128, 69, 81, 85, 65, 204, 69, 80, 83, 73,
-    76, 79, 78, 128, 69, 80, 83, 73, 76, 79, 206, 69, 80, 79, 67, 72, 128,
-    69, 80, 73, 71, 82, 65, 80, 72, 73, 195, 69, 80, 73, 68, 65, 85, 82, 69,
-    65, 206, 69, 80, 69, 78, 84, 72, 69, 84, 73, 195, 69, 80, 69, 71, 69, 82,
-    77, 65, 128, 69, 80, 65, 67, 212, 69, 79, 84, 128, 69, 79, 77, 128, 69,
-    79, 76, 72, 88, 128, 69, 79, 76, 128, 69, 79, 72, 128, 69, 78, 89, 128,
-    69, 78, 86, 69, 76, 79, 80, 69, 128, 69, 78, 86, 69, 76, 79, 80, 197, 69,
-    78, 85, 77, 69, 82, 65, 84, 73, 79, 206, 69, 78, 84, 82, 89, 45, 50, 128,
-    69, 78, 84, 82, 89, 45, 49, 128, 69, 78, 84, 82, 89, 128, 69, 78, 84, 82,
-    217, 69, 78, 84, 72, 85, 83, 73, 65, 83, 77, 128, 69, 78, 84, 69, 82, 80,
-    82, 73, 83, 69, 128, 69, 78, 84, 69, 82, 73, 78, 199, 69, 78, 84, 69, 82,
-    128, 69, 78, 84, 69, 210, 69, 78, 84, 45, 83, 72, 65, 80, 69, 196, 69,
-    78, 81, 85, 73, 82, 89, 128, 69, 78, 81, 128, 69, 78, 79, 211, 69, 78,
-    78, 73, 128, 69, 78, 78, 128, 69, 78, 76, 65, 82, 71, 69, 77, 69, 78, 84,
-    128, 69, 78, 71, 73, 78, 69, 128, 69, 78, 68, 79, 70, 79, 78, 79, 78,
-    128, 69, 78, 68, 73, 78, 199, 69, 78, 68, 69, 80, 128, 69, 78, 68, 69,
-    65, 86, 79, 85, 82, 128, 69, 78, 67, 79, 85, 78, 84, 69, 82, 83, 128, 69,
-    78, 67, 76, 79, 83, 85, 82, 69, 83, 128, 69, 78, 67, 76, 79, 83, 85, 82,
-    69, 128, 69, 78, 67, 76, 79, 83, 73, 78, 199, 69, 78, 67, 128, 69, 78,
-    65, 82, 88, 73, 211, 69, 78, 65, 82, 77, 79, 78, 73, 79, 211, 69, 77, 80,
-    84, 217, 69, 77, 80, 72, 65, 84, 73, 195, 69, 77, 80, 72, 65, 83, 73,
-    211, 69, 77, 79, 74, 201, 69, 77, 66, 82, 79, 73, 68, 69, 82, 89, 128,
-    69, 77, 66, 76, 69, 77, 128, 69, 77, 66, 69, 76, 76, 73, 83, 72, 77, 69,
-    78, 84, 128, 69, 77, 66, 69, 68, 68, 73, 78, 71, 128, 69, 76, 89, 77, 65,
-    73, 195, 69, 76, 89, 128, 69, 76, 84, 128, 69, 76, 76, 73, 80, 84, 73,
-    195, 69, 76, 76, 73, 80, 83, 73, 83, 128, 69, 76, 76, 73, 80, 83, 69,
-    128, 69, 76, 73, 70, 73, 128, 69, 76, 73, 70, 128, 69, 76, 69, 86, 69,
-    78, 45, 84, 72, 73, 82, 84, 89, 128, 69, 76, 69, 86, 69, 78, 128, 69, 76,
-    69, 86, 69, 206, 69, 76, 69, 86, 65, 84, 85, 211, 69, 76, 69, 86, 65, 84,
-    79, 82, 128, 69, 76, 69, 80, 72, 65, 78, 84, 128, 69, 76, 69, 77, 69, 78,
-    212, 69, 76, 69, 67, 84, 82, 79, 78, 73, 67, 83, 128, 69, 76, 69, 67, 84,
-    82, 73, 67, 65, 204, 69, 76, 69, 67, 84, 82, 73, 195, 69, 76, 66, 65, 83,
-    65, 206, 69, 76, 65, 77, 73, 84, 69, 128, 69, 76, 65, 77, 73, 84, 197,
-    69, 76, 65, 70, 82, 79, 78, 128, 69, 75, 83, 84, 82, 69, 80, 84, 79, 78,
-    128, 69, 75, 83, 128, 69, 75, 70, 79, 78, 73, 84, 73, 75, 79, 78, 128,
-    69, 75, 65, 82, 65, 128, 69, 75, 65, 77, 128, 69, 74, 69, 67, 212, 69,
-    73, 83, 128, 69, 73, 71, 72, 84, 89, 128, 69, 73, 71, 72, 84, 217, 69,
-    73, 71, 72, 84, 73, 69, 84, 72, 83, 128, 69, 73, 71, 72, 84, 73, 69, 84,
-    72, 128, 69, 73, 71, 72, 84, 72, 83, 128, 69, 73, 71, 72, 84, 72, 211,
-    69, 73, 71, 72, 84, 72, 128, 69, 73, 71, 72, 84, 69, 69, 78, 128, 69, 73,
-    71, 72, 84, 69, 69, 206, 69, 73, 71, 72, 84, 45, 84, 72, 73, 82, 84, 89,
-    128, 69, 73, 69, 128, 69, 72, 87, 65, 218, 69, 72, 84, 83, 65, 128, 69,
-    72, 84, 65, 128, 69, 72, 80, 65, 128, 69, 72, 75, 65, 128, 69, 72, 67,
-    72, 65, 128, 69, 71, 89, 80, 84, 79, 76, 79, 71, 73, 67, 65, 204, 69, 71,
-    89, 128, 69, 71, 73, 82, 128, 69, 71, 71, 83, 128, 69, 71, 71, 128, 69,
-    69, 89, 65, 78, 78, 65, 128, 69, 69, 75, 65, 65, 128, 69, 69, 72, 128,
-    69, 69, 66, 69, 69, 70, 73, 76, 73, 128, 69, 68, 73, 84, 79, 82, 73, 65,
-    204, 69, 68, 73, 78, 128, 69, 68, 68, 128, 69, 67, 83, 128, 69, 67, 76,
-    73, 80, 83, 69, 128, 69, 66, 69, 70, 73, 76, 73, 128, 69, 65, 83, 84, 69,
-    82, 206, 69, 65, 83, 84, 128, 69, 65, 83, 212, 69, 65, 82, 84, 72, 76,
-    217, 69, 65, 82, 84, 72, 128, 69, 65, 82, 84, 200, 69, 65, 82, 76, 217,
-    69, 65, 77, 72, 65, 78, 67, 72, 79, 76, 76, 128, 69, 65, 71, 76, 69, 128,
-    69, 65, 68, 72, 65, 68, 72, 128, 69, 65, 66, 72, 65, 68, 72, 128, 69,
-    178, 69, 48, 51, 56, 128, 69, 48, 51, 55, 128, 69, 48, 51, 54, 128, 69,
-    48, 51, 52, 65, 128, 69, 48, 51, 52, 128, 69, 48, 51, 51, 128, 69, 48,
-    51, 50, 128, 69, 48, 51, 49, 128, 69, 48, 51, 48, 128, 69, 48, 50, 57,
-    128, 69, 48, 50, 56, 65, 128, 69, 48, 50, 56, 128, 69, 48, 50, 55, 128,
-    69, 48, 50, 54, 128, 69, 48, 50, 53, 128, 69, 48, 50, 52, 128, 69, 48,
-    50, 51, 128, 69, 48, 50, 50, 128, 69, 48, 50, 49, 128, 69, 48, 50, 48,
-    65, 128, 69, 48, 50, 48, 128, 69, 48, 49, 57, 128, 69, 48, 49, 56, 128,
-    69, 48, 49, 55, 65, 128, 69, 48, 49, 55, 128, 69, 48, 49, 54, 65, 128,
-    69, 48, 49, 54, 128, 69, 48, 49, 53, 128, 69, 48, 49, 52, 128, 69, 48,
-    49, 51, 128, 69, 48, 49, 50, 128, 69, 48, 49, 49, 128, 69, 48, 49, 48,
-    128, 69, 48, 48, 57, 65, 128, 69, 48, 48, 57, 128, 69, 48, 48, 56, 65,
-    128, 69, 48, 48, 56, 128, 69, 48, 48, 55, 128, 69, 48, 48, 54, 128, 69,
-    48, 48, 53, 128, 69, 48, 48, 52, 128, 69, 48, 48, 51, 128, 69, 48, 48,
-    50, 128, 69, 48, 48, 49, 128, 69, 45, 77, 65, 73, 204, 68, 90, 90, 72,
-    69, 128, 68, 90, 90, 69, 128, 68, 90, 90, 65, 128, 68, 90, 89, 73, 128,
-    68, 90, 89, 65, 89, 128, 68, 90, 87, 69, 128, 68, 90, 85, 128, 68, 90,
-    79, 128, 68, 90, 74, 69, 128, 68, 90, 73, 84, 65, 128, 68, 90, 73, 128,
-    68, 90, 72, 79, 73, 128, 68, 90, 72, 69, 128, 68, 90, 72, 65, 128, 68,
-    90, 69, 76, 79, 128, 68, 90, 69, 69, 128, 68, 90, 69, 128, 68, 90, 65,
-    89, 128, 68, 90, 65, 65, 128, 68, 90, 65, 128, 68, 90, 128, 68, 218, 68,
-    89, 79, 128, 68, 89, 207, 68, 89, 78, 65, 77, 73, 195, 68, 89, 69, 72,
-    128, 68, 89, 69, 200, 68, 89, 65, 78, 128, 68, 87, 79, 128, 68, 87, 69,
-    128, 68, 87, 65, 128, 68, 86, 85, 77, 89, 193, 68, 86, 79, 69, 84, 79,
-    67, 72, 73, 69, 128, 68, 86, 79, 69, 67, 72, 69, 76, 78, 79, 80, 79, 86,
-    79, 68, 78, 65, 89, 65, 128, 68, 86, 79, 69, 67, 72, 69, 76, 78, 79, 80,
-    79, 86, 79, 68, 78, 65, 89, 193, 68, 86, 79, 69, 67, 72, 69, 76, 78, 79,
-    75, 82, 89, 90, 72, 69, 86, 65, 89, 65, 128, 68, 86, 79, 69, 67, 72, 69,
-    76, 78, 65, 89, 65, 128, 68, 86, 79, 69, 67, 72, 69, 76, 78, 65, 89, 193,
-    68, 86, 73, 83, 86, 65, 82, 65, 128, 68, 86, 68, 128, 68, 86, 193, 68,
-    86, 128, 68, 85, 84, 73, 69, 83, 128, 68, 85, 83, 75, 128, 68, 85, 83,
-    72, 69, 78, 78, 65, 128, 68, 85, 82, 65, 84, 73, 79, 78, 128, 68, 85, 82,
-    50, 128, 68, 85, 80, 79, 78, 68, 73, 85, 211, 68, 85, 79, 88, 128, 68,
-    85, 79, 128, 68, 85, 78, 52, 128, 68, 85, 78, 51, 128, 68, 85, 78, 179,
-    68, 85, 77, 80, 76, 73, 78, 71, 128, 68, 85, 77, 128, 68, 85, 204, 68,
-    85, 72, 128, 68, 85, 71, 85, 68, 128, 68, 85, 199, 68, 85, 68, 65, 128,
-    68, 85, 67, 75, 128, 68, 85, 66, 50, 128, 68, 85, 66, 128, 68, 85, 194,
-    68, 82, 89, 128, 68, 82, 217, 68, 82, 85, 77, 83, 84, 73, 67, 75, 83,
-    128, 68, 82, 85, 77, 128, 68, 82, 85, 205, 68, 82, 79, 80, 83, 128, 68,
-    82, 79, 80, 76, 69, 84, 128, 68, 82, 79, 80, 45, 83, 72, 65, 68, 79, 87,
-    69, 196, 68, 82, 79, 208, 68, 82, 79, 79, 76, 73, 78, 199, 68, 82, 79,
-    77, 69, 68, 65, 82, 217, 68, 82, 73, 86, 69, 128, 68, 82, 73, 86, 197,
-    68, 82, 73, 78, 75, 128, 68, 82, 73, 204, 68, 82, 69, 83, 83, 128, 68,
-    82, 69, 65, 77, 217, 68, 82, 65, 85, 71, 72, 84, 211, 68, 82, 65, 77,
-    128, 68, 82, 65, 205, 68, 82, 65, 71, 79, 78, 128, 68, 82, 65, 71, 79,
-    206, 68, 82, 65, 70, 84, 73, 78, 199, 68, 82, 65, 67, 72, 77, 65, 83,
-    128, 68, 82, 65, 67, 72, 77, 65, 128, 68, 82, 65, 67, 72, 77, 193, 68,
-    79, 87, 78, 87, 65, 82, 68, 83, 128, 68, 79, 87, 78, 87, 65, 82, 68, 211,
-    68, 79, 87, 78, 87, 65, 82, 196, 68, 79, 87, 78, 83, 67, 65, 76, 73, 78,
-    199, 68, 79, 87, 78, 45, 80, 79, 73, 78, 84, 73, 78, 199, 68, 79, 87, 78,
-    128, 68, 79, 86, 69, 128, 68, 79, 86, 197, 68, 79, 85, 71, 72, 78, 85,
-    84, 128, 68, 79, 85, 66, 84, 128, 68, 79, 85, 66, 76, 69, 196, 68, 79,
-    85, 66, 76, 69, 45, 83, 84, 82, 85, 67, 203, 68, 79, 85, 66, 76, 69, 45,
-    76, 73, 78, 69, 196, 68, 79, 85, 66, 76, 69, 45, 76, 73, 78, 197, 68, 79,
-    85, 66, 76, 69, 45, 69, 78, 68, 69, 196, 68, 79, 85, 66, 76, 69, 128, 68,
-    79, 84, 84, 69, 68, 45, 80, 128, 68, 79, 84, 84, 69, 68, 45, 78, 128, 68,
-    79, 84, 84, 69, 68, 45, 76, 128, 68, 79, 84, 84, 69, 68, 128, 68, 79, 84,
-    84, 69, 196, 68, 79, 84, 83, 45, 56, 128, 68, 79, 84, 83, 45, 55, 56,
-    128, 68, 79, 84, 83, 45, 55, 128, 68, 79, 84, 83, 45, 54, 56, 128, 68,
-    79, 84, 83, 45, 54, 55, 56, 128, 68, 79, 84, 83, 45, 54, 55, 128, 68, 79,
-    84, 83, 45, 54, 128, 68, 79, 84, 83, 45, 53, 56, 128, 68, 79, 84, 83, 45,
-    53, 55, 56, 128, 68, 79, 84, 83, 45, 53, 55, 128, 68, 79, 84, 83, 45, 53,
-    54, 56, 128, 68, 79, 84, 83, 45, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45,
-    53, 54, 55, 128, 68, 79, 84, 83, 45, 53, 54, 128, 68, 79, 84, 83, 45, 53,
-    128, 68, 79, 84, 83, 45, 52, 56, 128, 68, 79, 84, 83, 45, 52, 55, 56,
-    128, 68, 79, 84, 83, 45, 52, 55, 128, 68, 79, 84, 83, 45, 52, 54, 56,
-    128, 68, 79, 84, 83, 45, 52, 54, 55, 56, 128, 68, 79, 84, 83, 45, 52, 54,
-    55, 128, 68, 79, 84, 83, 45, 52, 54, 128, 68, 79, 84, 83, 45, 52, 53, 56,
-    128, 68, 79, 84, 83, 45, 52, 53, 55, 56, 128, 68, 79, 84, 83, 45, 52, 53,
-    55, 128, 68, 79, 84, 83, 45, 52, 53, 54, 56, 128, 68, 79, 84, 83, 45, 52,
-    53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 52, 53, 54, 55, 128, 68, 79, 84,
-    83, 45, 52, 53, 54, 128, 68, 79, 84, 83, 45, 52, 53, 128, 68, 79, 84, 83,
-    45, 52, 128, 68, 79, 84, 83, 45, 51, 56, 128, 68, 79, 84, 83, 45, 51, 55,
-    56, 128, 68, 79, 84, 83, 45, 51, 55, 128, 68, 79, 84, 83, 45, 51, 54, 56,
-    128, 68, 79, 84, 83, 45, 51, 54, 55, 56, 128, 68, 79, 84, 83, 45, 51, 54,
-    55, 128, 68, 79, 84, 83, 45, 51, 54, 128, 68, 79, 84, 83, 45, 51, 53, 56,
-    128, 68, 79, 84, 83, 45, 51, 53, 55, 56, 128, 68, 79, 84, 83, 45, 51, 53,
-    55, 128, 68, 79, 84, 83, 45, 51, 53, 54, 56, 128, 68, 79, 84, 83, 45, 51,
-    53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 51, 53, 54, 55, 128, 68, 79, 84,
-    83, 45, 51, 53, 54, 128, 68, 79, 84, 83, 45, 51, 53, 128, 68, 79, 84, 83,
-    45, 51, 52, 56, 128, 68, 79, 84, 83, 45, 51, 52, 55, 56, 128, 68, 79, 84,
-    83, 45, 51, 52, 55, 128, 68, 79, 84, 83, 45, 51, 52, 54, 56, 128, 68, 79,
-    84, 83, 45, 51, 52, 54, 55, 56, 128, 68, 79, 84, 83, 45, 51, 52, 54, 55,
-    128, 68, 79, 84, 83, 45, 51, 52, 54, 128, 68, 79, 84, 83, 45, 51, 52, 53,
-    56, 128, 68, 79, 84, 83, 45, 51, 52, 53, 55, 56, 128, 68, 79, 84, 83, 45,
-    51, 52, 53, 55, 128, 68, 79, 84, 83, 45, 51, 52, 53, 54, 56, 128, 68, 79,
-    84, 83, 45, 51, 52, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 51, 52, 53,
-    54, 55, 128, 68, 79, 84, 83, 45, 51, 52, 53, 54, 128, 68, 79, 84, 83, 45,
-    51, 52, 53, 128, 68, 79, 84, 83, 45, 51, 52, 128, 68, 79, 84, 83, 45, 51,
-    128, 68, 79, 84, 83, 45, 50, 56, 128, 68, 79, 84, 83, 45, 50, 55, 56,
-    128, 68, 79, 84, 83, 45, 50, 55, 128, 68, 79, 84, 83, 45, 50, 54, 56,
-    128, 68, 79, 84, 83, 45, 50, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 54,
-    55, 128, 68, 79, 84, 83, 45, 50, 54, 128, 68, 79, 84, 83, 45, 50, 53, 56,
-    128, 68, 79, 84, 83, 45, 50, 53, 55, 56, 128, 68, 79, 84, 83, 45, 50, 53,
-    55, 128, 68, 79, 84, 83, 45, 50, 53, 54, 56, 128, 68, 79, 84, 83, 45, 50,
-    53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 53, 54, 55, 128, 68, 79, 84,
-    83, 45, 50, 53, 54, 128, 68, 79, 84, 83, 45, 50, 53, 128, 68, 79, 84, 83,
-    45, 50, 52, 56, 128, 68, 79, 84, 83, 45, 50, 52, 55, 56, 128, 68, 79, 84,
-    83, 45, 50, 52, 55, 128, 68, 79, 84, 83, 45, 50, 52, 54, 56, 128, 68, 79,
-    84, 83, 45, 50, 52, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 52, 54, 55,
-    128, 68, 79, 84, 83, 45, 50, 52, 54, 128, 68, 79, 84, 83, 45, 50, 52, 53,
-    56, 128, 68, 79, 84, 83, 45, 50, 52, 53, 55, 56, 128, 68, 79, 84, 83, 45,
-    50, 52, 53, 55, 128, 68, 79, 84, 83, 45, 50, 52, 53, 54, 56, 128, 68, 79,
-    84, 83, 45, 50, 52, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 52, 53,
-    54, 55, 128, 68, 79, 84, 83, 45, 50, 52, 53, 54, 128, 68, 79, 84, 83, 45,
-    50, 52, 53, 128, 68, 79, 84, 83, 45, 50, 52, 128, 68, 79, 84, 83, 45, 50,
-    51, 56, 128, 68, 79, 84, 83, 45, 50, 51, 55, 56, 128, 68, 79, 84, 83, 45,
-    50, 51, 55, 128, 68, 79, 84, 83, 45, 50, 51, 54, 56, 128, 68, 79, 84, 83,
-    45, 50, 51, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 51, 54, 55, 128, 68,
-    79, 84, 83, 45, 50, 51, 54, 128, 68, 79, 84, 83, 45, 50, 51, 53, 56, 128,
-    68, 79, 84, 83, 45, 50, 51, 53, 55, 56, 128, 68, 79, 84, 83, 45, 50, 51,
-    53, 55, 128, 68, 79, 84, 83, 45, 50, 51, 53, 54, 56, 128, 68, 79, 84, 83,
-    45, 50, 51, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 51, 53, 54, 55,
-    128, 68, 79, 84, 83, 45, 50, 51, 53, 54, 128, 68, 79, 84, 83, 45, 50, 51,
-    53, 128, 68, 79, 84, 83, 45, 50, 51, 52, 56, 128, 68, 79, 84, 83, 45, 50,
-    51, 52, 55, 56, 128, 68, 79, 84, 83, 45, 50, 51, 52, 55, 128, 68, 79, 84,
-    83, 45, 50, 51, 52, 54, 56, 128, 68, 79, 84, 83, 45, 50, 51, 52, 54, 55,
-    56, 128, 68, 79, 84, 83, 45, 50, 51, 52, 54, 55, 128, 68, 79, 84, 83, 45,
-    50, 51, 52, 54, 128, 68, 79, 84, 83, 45, 50, 51, 52, 53, 56, 128, 68, 79,
-    84, 83, 45, 50, 51, 52, 53, 55, 56, 128, 68, 79, 84, 83, 45, 50, 51, 52,
-    53, 55, 128, 68, 79, 84, 83, 45, 50, 51, 52, 53, 54, 56, 128, 68, 79, 84,
-    83, 45, 50, 51, 52, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 50, 51, 52,
-    53, 54, 55, 128, 68, 79, 84, 83, 45, 50, 51, 52, 53, 54, 128, 68, 79, 84,
-    83, 45, 50, 51, 52, 53, 128, 68, 79, 84, 83, 45, 50, 51, 52, 128, 68, 79,
-    84, 83, 45, 50, 51, 128, 68, 79, 84, 83, 45, 50, 128, 68, 79, 84, 83, 45,
-    49, 56, 128, 68, 79, 84, 83, 45, 49, 55, 56, 128, 68, 79, 84, 83, 45, 49,
-    55, 128, 68, 79, 84, 83, 45, 49, 54, 56, 128, 68, 79, 84, 83, 45, 49, 54,
-    55, 56, 128, 68, 79, 84, 83, 45, 49, 54, 55, 128, 68, 79, 84, 83, 45, 49,
-    54, 128, 68, 79, 84, 83, 45, 49, 53, 56, 128, 68, 79, 84, 83, 45, 49, 53,
-    55, 56, 128, 68, 79, 84, 83, 45, 49, 53, 55, 128, 68, 79, 84, 83, 45, 49,
-    53, 54, 56, 128, 68, 79, 84, 83, 45, 49, 53, 54, 55, 56, 128, 68, 79, 84,
-    83, 45, 49, 53, 54, 55, 128, 68, 79, 84, 83, 45, 49, 53, 54, 128, 68, 79,
-    84, 83, 45, 49, 53, 128, 68, 79, 84, 83, 45, 49, 52, 56, 128, 68, 79, 84,
-    83, 45, 49, 52, 55, 56, 128, 68, 79, 84, 83, 45, 49, 52, 55, 128, 68, 79,
-    84, 83, 45, 49, 52, 54, 56, 128, 68, 79, 84, 83, 45, 49, 52, 54, 55, 56,
-    128, 68, 79, 84, 83, 45, 49, 52, 54, 55, 128, 68, 79, 84, 83, 45, 49, 52,
-    54, 128, 68, 79, 84, 83, 45, 49, 52, 53, 56, 128, 68, 79, 84, 83, 45, 49,
-    52, 53, 55, 56, 128, 68, 79, 84, 83, 45, 49, 52, 53, 55, 128, 68, 79, 84,
-    83, 45, 49, 52, 53, 54, 56, 128, 68, 79, 84, 83, 45, 49, 52, 53, 54, 55,
-    56, 128, 68, 79, 84, 83, 45, 49, 52, 53, 54, 55, 128, 68, 79, 84, 83, 45,
-    49, 52, 53, 54, 128, 68, 79, 84, 83, 45, 49, 52, 53, 128, 68, 79, 84, 83,
-    45, 49, 52, 128, 68, 79, 84, 83, 45, 49, 51, 56, 128, 68, 79, 84, 83, 45,
-    49, 51, 55, 56, 128, 68, 79, 84, 83, 45, 49, 51, 55, 128, 68, 79, 84, 83,
-    45, 49, 51, 54, 56, 128, 68, 79, 84, 83, 45, 49, 51, 54, 55, 56, 128, 68,
-    79, 84, 83, 45, 49, 51, 54, 55, 128, 68, 79, 84, 83, 45, 49, 51, 54, 128,
-    68, 79, 84, 83, 45, 49, 51, 53, 56, 128, 68, 79, 84, 83, 45, 49, 51, 53,
-    55, 56, 128, 68, 79, 84, 83, 45, 49, 51, 53, 55, 128, 68, 79, 84, 83, 45,
-    49, 51, 53, 54, 56, 128, 68, 79, 84, 83, 45, 49, 51, 53, 54, 55, 56, 128,
-    68, 79, 84, 83, 45, 49, 51, 53, 54, 55, 128, 68, 79, 84, 83, 45, 49, 51,
-    53, 54, 128, 68, 79, 84, 83, 45, 49, 51, 53, 128, 68, 79, 84, 83, 45, 49,
-    51, 52, 56, 128, 68, 79, 84, 83, 45, 49, 51, 52, 55, 56, 128, 68, 79, 84,
-    83, 45, 49, 51, 52, 55, 128, 68, 79, 84, 83, 45, 49, 51, 52, 54, 56, 128,
-    68, 79, 84, 83, 45, 49, 51, 52, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49,
-    51, 52, 54, 55, 128, 68, 79, 84, 83, 45, 49, 51, 52, 54, 128, 68, 79, 84,
-    83, 45, 49, 51, 52, 53, 56, 128, 68, 79, 84, 83, 45, 49, 51, 52, 53, 55,
-    56, 128, 68, 79, 84, 83, 45, 49, 51, 52, 53, 55, 128, 68, 79, 84, 83, 45,
-    49, 51, 52, 53, 54, 56, 128, 68, 79, 84, 83, 45, 49, 51, 52, 53, 54, 55,
-    56, 128, 68, 79, 84, 83, 45, 49, 51, 52, 53, 54, 55, 128, 68, 79, 84, 83,
-    45, 49, 51, 52, 53, 54, 128, 68, 79, 84, 83, 45, 49, 51, 52, 53, 128, 68,
-    79, 84, 83, 45, 49, 51, 52, 128, 68, 79, 84, 83, 45, 49, 51, 128, 68, 79,
-    84, 83, 45, 49, 50, 56, 128, 68, 79, 84, 83, 45, 49, 50, 55, 56, 128, 68,
-    79, 84, 83, 45, 49, 50, 55, 128, 68, 79, 84, 83, 45, 49, 50, 54, 56, 128,
-    68, 79, 84, 83, 45, 49, 50, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50,
-    54, 55, 128, 68, 79, 84, 83, 45, 49, 50, 54, 128, 68, 79, 84, 83, 45, 49,
-    50, 53, 56, 128, 68, 79, 84, 83, 45, 49, 50, 53, 55, 56, 128, 68, 79, 84,
-    83, 45, 49, 50, 53, 55, 128, 68, 79, 84, 83, 45, 49, 50, 53, 54, 56, 128,
-    68, 79, 84, 83, 45, 49, 50, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49,
-    50, 53, 54, 55, 128, 68, 79, 84, 83, 45, 49, 50, 53, 54, 128, 68, 79, 84,
-    83, 45, 49, 50, 53, 128, 68, 79, 84, 83, 45, 49, 50, 52, 56, 128, 68, 79,
-    84, 83, 45, 49, 50, 52, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 52, 55,
-    128, 68, 79, 84, 83, 45, 49, 50, 52, 54, 56, 128, 68, 79, 84, 83, 45, 49,
-    50, 52, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 52, 54, 55, 128, 68,
-    79, 84, 83, 45, 49, 50, 52, 54, 128, 68, 79, 84, 83, 45, 49, 50, 52, 53,
-    56, 128, 68, 79, 84, 83, 45, 49, 50, 52, 53, 55, 56, 128, 68, 79, 84, 83,
-    45, 49, 50, 52, 53, 55, 128, 68, 79, 84, 83, 45, 49, 50, 52, 53, 54, 56,
-    128, 68, 79, 84, 83, 45, 49, 50, 52, 53, 54, 55, 56, 128, 68, 79, 84, 83,
-    45, 49, 50, 52, 53, 54, 55, 128, 68, 79, 84, 83, 45, 49, 50, 52, 53, 54,
-    128, 68, 79, 84, 83, 45, 49, 50, 52, 53, 128, 68, 79, 84, 83, 45, 49, 50,
-    52, 128, 68, 79, 84, 83, 45, 49, 50, 51, 56, 128, 68, 79, 84, 83, 45, 49,
-    50, 51, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 51, 55, 128, 68, 79, 84,
-    83, 45, 49, 50, 51, 54, 56, 128, 68, 79, 84, 83, 45, 49, 50, 51, 54, 55,
-    56, 128, 68, 79, 84, 83, 45, 49, 50, 51, 54, 55, 128, 68, 79, 84, 83, 45,
-    49, 50, 51, 54, 128, 68, 79, 84, 83, 45, 49, 50, 51, 53, 56, 128, 68, 79,
-    84, 83, 45, 49, 50, 51, 53, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 51,
-    53, 55, 128, 68, 79, 84, 83, 45, 49, 50, 51, 53, 54, 56, 128, 68, 79, 84,
-    83, 45, 49, 50, 51, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 51,
-    53, 54, 55, 128, 68, 79, 84, 83, 45, 49, 50, 51, 53, 54, 128, 68, 79, 84,
-    83, 45, 49, 50, 51, 53, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52, 56, 128,
-    68, 79, 84, 83, 45, 49, 50, 51, 52, 55, 56, 128, 68, 79, 84, 83, 45, 49,
-    50, 51, 52, 55, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52, 54, 56, 128, 68,
-    79, 84, 83, 45, 49, 50, 51, 52, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49,
-    50, 51, 52, 54, 55, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52, 54, 128, 68,
-    79, 84, 83, 45, 49, 50, 51, 52, 53, 56, 128, 68, 79, 84, 83, 45, 49, 50,
-    51, 52, 53, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52, 53, 55, 128,
-    68, 79, 84, 83, 45, 49, 50, 51, 52, 53, 54, 56, 128, 68, 79, 84, 83, 45,
-    49, 50, 51, 52, 53, 54, 55, 56, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52,
-    53, 54, 55, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52, 53, 54, 128, 68, 79,
-    84, 83, 45, 49, 50, 51, 52, 53, 128, 68, 79, 84, 83, 45, 49, 50, 51, 52,
-    128, 68, 79, 84, 83, 45, 49, 50, 51, 128, 68, 79, 84, 83, 45, 49, 50,
-    128, 68, 79, 84, 83, 45, 49, 128, 68, 79, 84, 83, 128, 68, 79, 84, 76,
-    69, 83, 211, 68, 79, 82, 85, 128, 68, 79, 82, 79, 77, 197, 68, 79, 79,
-    82, 128, 68, 79, 79, 78, 71, 128, 68, 79, 78, 75, 69, 89, 128, 68, 79,
-    78, 71, 128, 68, 79, 77, 73, 78, 207, 68, 79, 77, 65, 73, 206, 68, 79,
-    76, 80, 72, 73, 78, 128, 68, 79, 76, 76, 83, 128, 68, 79, 76, 76, 65,
-    210, 68, 79, 76, 73, 85, 77, 128, 68, 79, 75, 77, 65, 73, 128, 68, 79,
-    73, 84, 128, 68, 79, 73, 78, 199, 68, 79, 73, 128, 68, 79, 71, 82, 193,
-    68, 79, 71, 128, 68, 79, 199, 68, 79, 69, 211, 68, 79, 68, 79, 128, 68,
-    79, 68, 69, 75, 65, 84, 65, 128, 68, 79, 67, 85, 77, 69, 78, 84, 128, 68,
-    79, 67, 85, 77, 69, 78, 212, 68, 79, 66, 82, 79, 128, 68, 79, 65, 67, 72,
-    65, 83, 72, 77, 69, 69, 128, 68, 79, 65, 67, 72, 65, 83, 72, 77, 69, 197,
-    68, 79, 65, 128, 68, 79, 45, 79, 128, 68, 78, 193, 68, 77, 128, 68, 205,
-    68, 76, 85, 128, 68, 76, 79, 128, 68, 76, 73, 128, 68, 76, 72, 89, 65,
-    128, 68, 76, 72, 65, 128, 68, 76, 69, 69, 128, 68, 76, 65, 128, 68, 76,
-    128, 68, 75, 65, 82, 128, 68, 75, 65, 210, 68, 74, 69, 82, 86, 73, 128,
-    68, 74, 69, 82, 86, 128, 68, 74, 69, 128, 68, 74, 65, 128, 68, 73, 90,
-    90, 217, 68, 73, 89, 193, 68, 73, 86, 79, 82, 67, 197, 68, 73, 86, 73,
-    83, 73, 79, 78, 128, 68, 73, 86, 73, 83, 73, 79, 206, 68, 73, 86, 73, 78,
-    199, 68, 73, 86, 73, 78, 65, 84, 73, 79, 78, 128, 68, 73, 86, 73, 68, 69,
-    83, 128, 68, 73, 86, 73, 68, 69, 82, 83, 128, 68, 73, 86, 73, 68, 69, 82,
-    128, 68, 73, 86, 73, 68, 69, 196, 68, 73, 86, 73, 68, 69, 128, 68, 73,
-    86, 73, 68, 197, 68, 73, 86, 69, 211, 68, 73, 86, 69, 82, 71, 69, 78, 67,
-    69, 128, 68, 73, 84, 84, 207, 68, 73, 83, 84, 79, 82, 84, 73, 79, 78,
-    128, 68, 73, 83, 84, 73, 78, 71, 85, 73, 83, 72, 128, 68, 73, 83, 84, 73,
-    76, 76, 128, 68, 73, 83, 83, 79, 76, 86, 69, 45, 50, 128, 68, 73, 83, 83,
-    79, 76, 86, 69, 128, 68, 73, 83, 80, 85, 84, 69, 196, 68, 73, 83, 80, 69,
-    82, 83, 73, 79, 78, 128, 68, 73, 83, 75, 128, 68, 73, 83, 73, 77, 79, 85,
-    128, 68, 73, 83, 72, 128, 68, 73, 83, 71, 85, 73, 83, 69, 196, 68, 73,
-    83, 67, 79, 78, 84, 73, 78, 85, 79, 85, 211, 68, 73, 83, 195, 68, 73, 83,
-    65, 80, 80, 79, 73, 78, 84, 69, 196, 68, 73, 83, 65, 66, 76, 69, 196, 68,
-    73, 82, 71, 193, 68, 73, 82, 69, 67, 84, 76, 217, 68, 73, 82, 69, 67, 84,
-    73, 79, 78, 65, 204, 68, 73, 82, 69, 67, 84, 73, 79, 206, 68, 73, 80, 84,
-    69, 128, 68, 73, 80, 80, 69, 82, 128, 68, 73, 80, 76, 79, 85, 78, 128,
-    68, 73, 80, 76, 73, 128, 68, 73, 80, 76, 201, 68, 73, 78, 71, 66, 65,
-    212, 68, 73, 206, 68, 73, 77, 77, 73, 78, 71, 128, 68, 73, 77, 73, 78,
-    85, 84, 73, 79, 78, 45, 51, 128, 68, 73, 77, 73, 78, 85, 84, 73, 79, 78,
-    45, 50, 128, 68, 73, 77, 73, 78, 85, 84, 73, 79, 78, 45, 49, 128, 68, 73,
-    77, 73, 78, 73, 83, 72, 77, 69, 78, 84, 128, 68, 73, 77, 73, 68, 73, 193,
-    68, 73, 77, 69, 78, 83, 73, 79, 78, 65, 204, 68, 73, 77, 69, 78, 83, 73,
-    79, 206, 68, 73, 77, 50, 128, 68, 73, 77, 178, 68, 73, 76, 128, 68, 73,
-    71, 82, 65, 80, 72, 128, 68, 73, 71, 82, 65, 80, 200, 68, 73, 71, 82, 65,
-    77, 77, 79, 211, 68, 73, 71, 82, 65, 77, 77, 193, 68, 73, 71, 82, 65,
-    205, 68, 73, 71, 79, 82, 71, 79, 78, 128, 68, 73, 71, 79, 82, 71, 79,
-    206, 68, 73, 71, 73, 84, 83, 128, 68, 73, 71, 65, 77, 77, 65, 128, 68,
-    73, 71, 193, 68, 73, 70, 84, 79, 71, 71, 79, 211, 68, 73, 70, 79, 78, 73,
-    65, 83, 128, 68, 73, 70, 70, 73, 67, 85, 76, 84, 217, 68, 73, 70, 70, 73,
-    67, 85, 76, 84, 73, 69, 83, 128, 68, 73, 70, 70, 69, 82, 69, 78, 84, 73,
-    65, 76, 128, 68, 73, 70, 70, 69, 82, 69, 78, 67, 197, 68, 73, 70, 65, 84,
-    128, 68, 73, 69, 83, 73, 83, 128, 68, 73, 69, 83, 73, 211, 68, 73, 69,
-    83, 69, 204, 68, 73, 69, 80, 128, 68, 73, 197, 68, 73, 66, 128, 68, 73,
-    65, 84, 79, 78, 79, 206, 68, 73, 65, 84, 79, 78, 73, 75, 201, 68, 73, 65,
-    83, 84, 79, 76, 201, 68, 73, 65, 77, 79, 78, 68, 83, 128, 68, 73, 65, 77,
-    79, 78, 68, 128, 68, 73, 65, 77, 79, 78, 196, 68, 73, 65, 77, 69, 84, 69,
-    210, 68, 73, 65, 76, 89, 84, 73, 75, 65, 128, 68, 73, 65, 76, 89, 84, 73,
-    75, 193, 68, 73, 65, 76, 69, 67, 84, 45, 208, 68, 73, 65, 71, 79, 78, 65,
-    76, 128, 68, 73, 65, 69, 82, 69, 83, 73, 90, 69, 196, 68, 73, 65, 69, 82,
-    69, 83, 73, 83, 45, 82, 73, 78, 71, 128, 68, 73, 65, 69, 82, 69, 83, 73,
-    83, 128, 68, 73, 65, 69, 82, 69, 83, 73, 211, 68, 72, 79, 85, 128, 68,
-    72, 79, 79, 128, 68, 72, 79, 128, 68, 72, 73, 73, 128, 68, 72, 72, 85,
-    128, 68, 72, 72, 79, 79, 128, 68, 72, 72, 79, 128, 68, 72, 72, 73, 128,
-    68, 72, 72, 69, 69, 128, 68, 72, 72, 69, 128, 68, 72, 72, 65, 128, 68,
-    72, 69, 69, 128, 68, 72, 65, 82, 77, 65, 128, 68, 72, 65, 77, 69, 68, 72,
-    128, 68, 72, 65, 76, 69, 84, 72, 128, 68, 72, 65, 76, 65, 84, 72, 128,
-    68, 72, 65, 76, 128, 68, 72, 65, 68, 72, 69, 128, 68, 72, 65, 65, 76, 85,
-    128, 68, 72, 65, 65, 128, 68, 72, 65, 128, 68, 69, 90, 200, 68, 69, 89,
-    84, 69, 82, 79, 213, 68, 69, 89, 84, 69, 82, 79, 211, 68, 69, 88, 73, 65,
-    128, 68, 69, 86, 73, 67, 197, 68, 69, 86, 69, 76, 79, 80, 77, 69, 78, 84,
-    128, 68, 69, 85, 78, 71, 128, 68, 69, 83, 75, 84, 79, 208, 68, 69, 83,
-    203, 68, 69, 83, 73, 71, 78, 128, 68, 69, 83, 73, 128, 68, 69, 83, 69,
-    82, 84, 128, 68, 69, 83, 69, 82, 212, 68, 69, 83, 69, 82, 69, 212, 68,
-    69, 83, 67, 82, 73, 80, 84, 73, 79, 206, 68, 69, 83, 67, 69, 78, 68, 73,
-    78, 199, 68, 69, 83, 67, 69, 78, 68, 69, 82, 128, 68, 69, 82, 69, 84, 45,
-    72, 73, 68, 69, 84, 128, 68, 69, 82, 69, 84, 128, 68, 69, 82, 69, 76, 73,
-    67, 212, 68, 69, 82, 66, 73, 84, 83, 65, 128, 68, 69, 80, 84, 72, 128,
-    68, 69, 80, 65, 82, 84, 85, 82, 69, 128, 68, 69, 80, 65, 82, 84, 77, 69,
-    78, 212, 68, 69, 80, 65, 82, 84, 73, 78, 199, 68, 69, 78, 84, 73, 83, 84,
-    82, 217, 68, 69, 78, 84, 65, 204, 68, 69, 78, 79, 77, 73, 78, 65, 84, 79,
-    82, 128, 68, 69, 78, 79, 77, 73, 78, 65, 84, 79, 210, 68, 69, 78, 78, 69,
-    78, 128, 68, 69, 78, 71, 128, 68, 69, 78, 197, 68, 69, 78, 65, 82, 73,
-    85, 211, 68, 69, 77, 69, 83, 84, 86, 69, 78, 78, 217, 68, 69, 76, 84, 65,
-    128, 68, 69, 76, 84, 193, 68, 69, 76, 84, 128, 68, 69, 76, 80, 72, 73,
-    195, 68, 69, 76, 73, 86, 69, 82, 217, 68, 69, 76, 73, 86, 69, 82, 65, 78,
-    67, 69, 128, 68, 69, 76, 73, 77, 73, 84, 69, 82, 128, 68, 69, 76, 73, 77,
-    73, 84, 69, 210, 68, 69, 76, 73, 67, 73, 79, 85, 211, 68, 69, 76, 69, 84,
-    73, 79, 206, 68, 69, 76, 69, 84, 69, 128, 68, 69, 76, 69, 84, 197, 68,
-    69, 75, 65, 128, 68, 69, 75, 128, 68, 69, 73, 128, 68, 69, 72, 73, 128,
-    68, 69, 71, 82, 69, 69, 83, 128, 68, 69, 71, 82, 69, 197, 68, 69, 70, 73,
-    78, 73, 84, 73, 79, 78, 128, 68, 69, 70, 69, 67, 84, 73, 86, 69, 78, 69,
-    83, 211, 68, 69, 69, 82, 128, 68, 69, 69, 80, 76, 89, 128, 68, 69, 69,
-    76, 128, 68, 69, 67, 82, 69, 83, 67, 69, 78, 68, 79, 128, 68, 69, 67, 82,
-    69, 65, 83, 69, 128, 68, 69, 67, 82, 69, 65, 83, 197, 68, 69, 67, 79, 82,
-    65, 84, 73, 86, 197, 68, 69, 67, 79, 82, 65, 84, 73, 79, 78, 128, 68, 69,
-    67, 73, 83, 73, 86, 69, 78, 69, 83, 83, 128, 68, 69, 67, 73, 77, 65, 204,
-    68, 69, 67, 73, 68, 85, 79, 85, 211, 68, 69, 67, 69, 77, 66, 69, 82, 128,
-    68, 69, 67, 65, 89, 69, 68, 128, 68, 69, 66, 73, 212, 68, 69, 65, 84, 72,
-    128, 68, 69, 65, 198, 68, 69, 65, 68, 128, 68, 68, 87, 65, 128, 68, 68,
-    85, 88, 128, 68, 68, 85, 84, 128, 68, 68, 85, 82, 88, 128, 68, 68, 85,
-    82, 128, 68, 68, 85, 80, 128, 68, 68, 85, 79, 88, 128, 68, 68, 85, 79,
-    80, 128, 68, 68, 85, 79, 128, 68, 68, 85, 128, 68, 68, 79, 88, 128, 68,
-    68, 79, 84, 128, 68, 68, 79, 80, 128, 68, 68, 79, 65, 128, 68, 68, 73,
-    88, 128, 68, 68, 73, 84, 128, 68, 68, 73, 80, 128, 68, 68, 73, 69, 88,
-    128, 68, 68, 73, 69, 80, 128, 68, 68, 73, 69, 128, 68, 68, 73, 128, 68,
-    68, 72, 85, 128, 68, 68, 72, 79, 128, 68, 68, 72, 69, 69, 128, 68, 68,
-    72, 69, 128, 68, 68, 72, 65, 65, 128, 68, 68, 72, 65, 128, 68, 68, 69,
-    88, 128, 68, 68, 69, 80, 128, 68, 68, 69, 69, 128, 68, 68, 69, 128, 68,
-    68, 68, 72, 65, 128, 68, 68, 68, 65, 128, 68, 68, 65, 89, 65, 78, 78, 65,
-    128, 68, 68, 65, 88, 128, 68, 68, 65, 84, 128, 68, 68, 65, 80, 128, 68,
-    68, 65, 76, 128, 68, 68, 65, 204, 68, 68, 65, 72, 65, 76, 128, 68, 68,
-    65, 72, 65, 204, 68, 68, 65, 65, 128, 68, 67, 83, 128, 68, 67, 72, 69,
-    128, 68, 67, 52, 128, 68, 67, 51, 128, 68, 67, 50, 128, 68, 67, 49, 128,
-    68, 194, 68, 65, 89, 45, 78, 73, 71, 72, 84, 128, 68, 65, 217, 68, 65,
-    87, 66, 128, 68, 65, 86, 73, 89, 65, 78, 73, 128, 68, 65, 86, 73, 68,
-    128, 68, 65, 84, 197, 68, 65, 83, 73, 65, 128, 68, 65, 83, 73, 193, 68,
-    65, 83, 72, 69, 196, 68, 65, 83, 72, 128, 68, 65, 83, 200, 68, 65, 83,
-    69, 73, 65, 128, 68, 65, 82, 84, 128, 68, 65, 82, 75, 69, 78, 73, 78, 71,
-    128, 68, 65, 82, 75, 69, 78, 73, 78, 199, 68, 65, 82, 203, 68, 65, 82,
-    71, 65, 128, 68, 65, 82, 65, 52, 128, 68, 65, 82, 65, 51, 128, 68, 65,
-    82, 128, 68, 65, 80, 45, 80, 82, 65, 205, 68, 65, 80, 45, 80, 73, 201,
-    68, 65, 80, 45, 77, 85, 79, 217, 68, 65, 80, 45, 66, 85, 79, 206, 68, 65,
-    80, 45, 66, 69, 201, 68, 65, 208, 68, 65, 78, 84, 65, 89, 65, 76, 65, 78,
-    128, 68, 65, 78, 84, 65, 74, 193, 68, 65, 78, 71, 79, 128, 68, 65, 78,
-    71, 128, 68, 65, 78, 199, 68, 65, 78, 68, 65, 128, 68, 65, 78, 67, 73,
-    78, 71, 128, 68, 65, 78, 67, 69, 82, 128, 68, 65, 77, 80, 128, 68, 65,
-    77, 208, 68, 65, 77, 77, 65, 84, 65, 78, 128, 68, 65, 77, 77, 65, 84, 65,
-    206, 68, 65, 77, 77, 65, 128, 68, 65, 77, 77, 193, 68, 65, 77, 65, 82,
-    85, 128, 68, 65, 77, 65, 71, 69, 68, 128, 68, 65, 77, 65, 71, 69, 196,
-    68, 65, 76, 69, 84, 72, 45, 82, 69, 83, 72, 128, 68, 65, 76, 69, 84, 128,
-    68, 65, 76, 69, 212, 68, 65, 76, 68, 65, 128, 68, 65, 76, 65, 84, 72,
-    128, 68, 65, 76, 65, 84, 200, 68, 65, 76, 65, 84, 128, 68, 65, 73, 82,
-    128, 68, 65, 73, 78, 71, 128, 68, 65, 73, 128, 68, 65, 72, 89, 65, 65,
-    85, 83, 72, 45, 50, 128, 68, 65, 72, 89, 65, 65, 85, 83, 72, 128, 68, 65,
-    71, 83, 128, 68, 65, 71, 71, 69, 82, 128, 68, 65, 71, 71, 69, 210, 68,
-    65, 71, 69, 83, 72, 128, 68, 65, 71, 69, 83, 200, 68, 65, 71, 66, 65, 83,
-    73, 78, 78, 65, 128, 68, 65, 71, 65, 218, 68, 65, 71, 65, 76, 71, 65,
-    128, 68, 65, 71, 51, 128, 68, 65, 199, 68, 65, 69, 78, 71, 128, 68, 65,
-    69, 199, 68, 65, 68, 128, 68, 65, 196, 68, 65, 65, 83, 85, 128, 68, 65,
-    65, 76, 73, 128, 68, 65, 65, 68, 72, 85, 128, 68, 48, 54, 55, 72, 128,
-    68, 48, 54, 55, 71, 128, 68, 48, 54, 55, 70, 128, 68, 48, 54, 55, 69,
-    128, 68, 48, 54, 55, 68, 128, 68, 48, 54, 55, 67, 128, 68, 48, 54, 55,
-    66, 128, 68, 48, 54, 55, 65, 128, 68, 48, 54, 55, 128, 68, 48, 54, 54,
-    128, 68, 48, 54, 53, 128, 68, 48, 54, 52, 128, 68, 48, 54, 51, 128, 68,
-    48, 54, 50, 128, 68, 48, 54, 49, 128, 68, 48, 54, 48, 128, 68, 48, 53,
-    57, 128, 68, 48, 53, 56, 128, 68, 48, 53, 55, 128, 68, 48, 53, 54, 128,
-    68, 48, 53, 53, 128, 68, 48, 53, 52, 65, 128, 68, 48, 53, 52, 128, 68,
-    48, 53, 51, 128, 68, 48, 53, 50, 65, 128, 68, 48, 53, 50, 128, 68, 48,
-    53, 49, 128, 68, 48, 53, 48, 73, 128, 68, 48, 53, 48, 72, 128, 68, 48,
-    53, 48, 71, 128, 68, 48, 53, 48, 70, 128, 68, 48, 53, 48, 69, 128, 68,
-    48, 53, 48, 68, 128, 68, 48, 53, 48, 67, 128, 68, 48, 53, 48, 66, 128,
-    68, 48, 53, 48, 65, 128, 68, 48, 53, 48, 128, 68, 48, 52, 57, 128, 68,
-    48, 52, 56, 65, 128, 68, 48, 52, 56, 128, 68, 48, 52, 55, 128, 68, 48,
-    52, 54, 65, 128, 68, 48, 52, 54, 128, 68, 48, 52, 53, 128, 68, 48, 52,
-    52, 128, 68, 48, 52, 51, 128, 68, 48, 52, 50, 128, 68, 48, 52, 49, 128,
-    68, 48, 52, 48, 128, 68, 48, 51, 57, 128, 68, 48, 51, 56, 128, 68, 48,
-    51, 55, 128, 68, 48, 51, 54, 128, 68, 48, 51, 53, 128, 68, 48, 51, 52,
-    65, 128, 68, 48, 51, 52, 128, 68, 48, 51, 51, 128, 68, 48, 51, 50, 128,
-    68, 48, 51, 49, 65, 128, 68, 48, 51, 49, 128, 68, 48, 51, 48, 128, 68,
-    48, 50, 57, 128, 68, 48, 50, 56, 128, 68, 48, 50, 55, 65, 128, 68, 48,
-    50, 55, 128, 68, 48, 50, 54, 128, 68, 48, 50, 53, 128, 68, 48, 50, 52,
-    128, 68, 48, 50, 51, 128, 68, 48, 50, 50, 128, 68, 48, 50, 49, 128, 68,
-    48, 50, 48, 128, 68, 48, 49, 57, 128, 68, 48, 49, 56, 128, 68, 48, 49,
-    55, 128, 68, 48, 49, 54, 128, 68, 48, 49, 53, 128, 68, 48, 49, 52, 128,
-    68, 48, 49, 51, 128, 68, 48, 49, 50, 128, 68, 48, 49, 49, 128, 68, 48,
-    49, 48, 128, 68, 48, 48, 57, 128, 68, 48, 48, 56, 65, 128, 68, 48, 48,
-    56, 128, 68, 48, 48, 55, 128, 68, 48, 48, 54, 128, 68, 48, 48, 53, 128,
-    68, 48, 48, 52, 128, 68, 48, 48, 51, 128, 68, 48, 48, 50, 128, 68, 48,
-    48, 49, 128, 67, 89, 88, 128, 67, 89, 84, 128, 67, 89, 82, 88, 128, 67,
-    89, 82, 69, 78, 65, 73, 195, 67, 89, 82, 128, 67, 89, 80, 82, 79, 45, 77,
-    73, 78, 79, 65, 206, 67, 89, 80, 82, 73, 79, 212, 67, 89, 80, 69, 82, 85,
-    83, 128, 67, 89, 80, 128, 67, 89, 76, 73, 78, 68, 82, 73, 67, 73, 84, 89,
-    128, 67, 89, 67, 76, 79, 78, 69, 128, 67, 89, 65, 89, 128, 67, 89, 65,
-    87, 128, 67, 89, 65, 128, 67, 87, 79, 79, 128, 67, 87, 79, 128, 67, 87,
-    73, 73, 128, 67, 87, 73, 128, 67, 87, 69, 79, 82, 84, 72, 128, 67, 87,
-    69, 128, 67, 87, 65, 65, 128, 67, 85, 88, 128, 67, 85, 85, 128, 67, 85,
-    212, 67, 85, 83, 84, 79, 77, 83, 128, 67, 85, 83, 84, 79, 77, 69, 210,
-    67, 85, 83, 84, 65, 82, 68, 128, 67, 85, 83, 80, 128, 67, 85, 82, 88,
-    128, 67, 85, 82, 86, 73, 78, 199, 67, 85, 82, 86, 69, 68, 128, 67, 85,
-    82, 86, 69, 196, 67, 85, 82, 86, 69, 128, 67, 85, 82, 86, 197, 67, 85,
-    82, 83, 73, 86, 197, 67, 85, 82, 82, 217, 67, 85, 82, 82, 69, 78, 84,
-    128, 67, 85, 82, 82, 69, 78, 212, 67, 85, 82, 76, 217, 67, 85, 82, 76,
-    73, 78, 199, 67, 85, 82, 76, 69, 196, 67, 85, 82, 76, 128, 67, 85, 82,
-    128, 67, 85, 80, 80, 69, 68, 128, 67, 85, 80, 80, 69, 196, 67, 85, 80,
-    73, 68, 79, 128, 67, 85, 80, 67, 65, 75, 69, 128, 67, 85, 79, 88, 128,
-    67, 85, 79, 80, 128, 67, 85, 79, 128, 67, 85, 205, 67, 85, 76, 84, 73,
-    86, 65, 84, 73, 79, 206, 67, 85, 67, 85, 77, 66, 69, 82, 128, 67, 85, 66,
-    69, 68, 128, 67, 85, 66, 69, 128, 67, 85, 66, 197, 67, 85, 65, 84, 82,
-    73, 76, 76, 79, 128, 67, 85, 65, 84, 82, 73, 76, 76, 207, 67, 85, 65,
-    205, 67, 83, 73, 128, 67, 82, 89, 83, 84, 65, 204, 67, 82, 89, 80, 84,
-    79, 71, 82, 65, 77, 77, 73, 195, 67, 82, 89, 73, 78, 199, 67, 82, 85, 90,
-    69, 73, 82, 207, 67, 82, 85, 84, 67, 72, 128, 67, 82, 85, 67, 73, 70, 79,
-    82, 205, 67, 82, 85, 67, 73, 66, 76, 69, 45, 53, 128, 67, 82, 85, 67, 73,
-    66, 76, 69, 45, 52, 128, 67, 82, 85, 67, 73, 66, 76, 69, 45, 51, 128, 67,
-    82, 85, 67, 73, 66, 76, 69, 45, 50, 128, 67, 82, 85, 67, 73, 66, 76, 69,
-    128, 67, 82, 79, 87, 78, 128, 67, 82, 79, 83, 83, 73, 78, 71, 128, 67,
-    82, 79, 83, 83, 73, 78, 199, 67, 82, 79, 83, 83, 72, 65, 84, 67, 200, 67,
-    82, 79, 83, 83, 69, 68, 45, 84, 65, 73, 76, 128, 67, 82, 79, 83, 83, 69,
-    68, 128, 67, 82, 79, 83, 83, 69, 196, 67, 82, 79, 83, 83, 66, 79, 78, 69,
-    83, 128, 67, 82, 79, 83, 83, 66, 65, 82, 128, 67, 82, 79, 83, 83, 128,
-    67, 82, 79, 83, 211, 67, 82, 79, 80, 128, 67, 82, 79, 73, 88, 128, 67,
-    82, 79, 73, 83, 83, 65, 78, 84, 128, 67, 82, 79, 67, 85, 211, 67, 82, 79,
-    67, 79, 68, 73, 76, 69, 128, 67, 82, 73, 67, 75, 69, 84, 128, 67, 82, 73,
-    67, 75, 69, 212, 67, 82, 69, 83, 67, 69, 78, 84, 83, 128, 67, 82, 69, 83,
-    67, 69, 78, 84, 128, 67, 82, 69, 83, 67, 69, 78, 212, 67, 82, 69, 68, 73,
-    212, 67, 82, 69, 65, 84, 73, 86, 197, 67, 82, 69, 65, 77, 128, 67, 82,
-    65, 89, 79, 78, 128, 67, 82, 65, 66, 128, 67, 82, 128, 67, 79, 88, 128,
-    67, 79, 87, 66, 79, 217, 67, 79, 87, 128, 67, 79, 215, 67, 79, 86, 69,
-    82, 73, 78, 199, 67, 79, 86, 69, 82, 128, 67, 79, 85, 80, 76, 197, 67,
-    79, 85, 78, 84, 73, 78, 199, 67, 79, 85, 78, 84, 69, 82, 83, 73, 78, 75,
-    128, 67, 79, 85, 78, 84, 69, 82, 66, 79, 82, 69, 128, 67, 79, 85, 78, 67,
-    73, 204, 67, 79, 85, 67, 200, 67, 79, 84, 128, 67, 79, 82, 82, 69, 83,
-    80, 79, 78, 68, 211, 67, 79, 82, 82, 69, 67, 84, 128, 67, 79, 82, 80, 83,
-    69, 128, 67, 79, 82, 80, 79, 82, 65, 84, 73, 79, 78, 128, 67, 79, 82, 79,
-    78, 73, 83, 128, 67, 79, 82, 78, 73, 83, 200, 67, 79, 82, 78, 69, 82, 83,
-    128, 67, 79, 82, 78, 69, 82, 128, 67, 79, 82, 78, 69, 210, 67, 79, 82,
-    75, 128, 67, 79, 82, 65, 76, 128, 67, 79, 80, 89, 82, 73, 71, 72, 84,
-    128, 67, 79, 80, 89, 82, 73, 71, 72, 212, 67, 79, 80, 89, 76, 69, 70,
-    212, 67, 79, 80, 89, 128, 67, 79, 80, 82, 79, 68, 85, 67, 84, 128, 67,
-    79, 80, 80, 69, 82, 45, 50, 128, 67, 79, 80, 80, 69, 82, 128, 67, 79, 80,
-    128, 67, 79, 79, 76, 128, 67, 79, 79, 75, 73, 78, 71, 128, 67, 79, 79,
-    75, 73, 69, 128, 67, 79, 79, 75, 69, 196, 67, 79, 79, 128, 67, 79, 78,
-    86, 69, 82, 71, 73, 78, 199, 67, 79, 78, 86, 69, 78, 73, 69, 78, 67, 197,
-    67, 79, 78, 84, 82, 79, 76, 128, 67, 79, 78, 84, 82, 79, 204, 67, 79, 78,
-    84, 82, 65, 82, 73, 69, 84, 89, 128, 67, 79, 78, 84, 82, 65, 67, 84, 73,
-    79, 78, 128, 67, 79, 78, 84, 79, 85, 82, 69, 196, 67, 79, 78, 84, 79, 85,
-    210, 67, 79, 78, 84, 73, 78, 85, 73, 78, 199, 67, 79, 78, 84, 73, 78, 85,
-    65, 84, 73, 79, 206, 67, 79, 78, 84, 69, 78, 84, 73, 79, 78, 128, 67, 79,
-    78, 84, 69, 77, 80, 76, 65, 84, 73, 79, 78, 128, 67, 79, 78, 84, 65, 73,
-    78, 211, 67, 79, 78, 84, 65, 73, 78, 73, 78, 199, 67, 79, 78, 84, 65, 73,
-    206, 67, 79, 78, 84, 65, 67, 84, 128, 67, 79, 78, 83, 84, 82, 85, 67, 84,
-    73, 79, 78, 128, 67, 79, 78, 83, 84, 82, 85, 67, 84, 73, 79, 206, 67, 79,
-    78, 83, 84, 65, 78, 84, 128, 67, 79, 78, 83, 84, 65, 78, 212, 67, 79, 78,
-    83, 84, 65, 78, 67, 89, 128, 67, 79, 78, 83, 69, 67, 85, 84, 73, 86, 197,
-    67, 79, 78, 74, 85, 78, 67, 84, 73, 79, 78, 128, 67, 79, 78, 74, 85, 71,
-    65, 84, 197, 67, 79, 78, 74, 79, 73, 78, 73, 78, 199, 67, 79, 78, 74, 79,
-    73, 78, 69, 82, 128, 67, 79, 78, 74, 79, 73, 78, 69, 68, 128, 67, 79, 78,
-    74, 79, 73, 78, 69, 196, 67, 79, 78, 73, 67, 65, 204, 67, 79, 78, 71, 82,
-    85, 69, 78, 212, 67, 79, 78, 71, 82, 65, 84, 85, 76, 65, 84, 73, 79, 78,
-    128, 67, 79, 78, 70, 85, 83, 69, 196, 67, 79, 78, 70, 79, 85, 78, 68, 69,
-    196, 67, 79, 78, 70, 76, 73, 67, 84, 128, 67, 79, 78, 70, 69, 84, 84,
-    201, 67, 79, 78, 67, 65, 86, 69, 45, 83, 73, 68, 69, 196, 67, 79, 78, 67,
-    65, 86, 69, 45, 80, 79, 73, 78, 84, 69, 196, 67, 79, 77, 80, 85, 84, 69,
-    82, 83, 128, 67, 79, 77, 80, 85, 84, 69, 82, 128, 67, 79, 77, 80, 82, 69,
-    83, 83, 73, 79, 78, 128, 67, 79, 77, 80, 82, 69, 83, 83, 69, 196, 67, 79,
-    77, 80, 79, 83, 73, 84, 73, 79, 78, 128, 67, 79, 77, 80, 79, 83, 73, 84,
-    73, 79, 206, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 54, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 54, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 54, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 54, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 54, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 54, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 54, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 54, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    54, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 53, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 53, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 53, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 53, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 53, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 53, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 53, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 53, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    53, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 53, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 52, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 52, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 52, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 52, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 52, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 52, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 52, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    52, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 52, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 52, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 51, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 51, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 51, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 51, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 51, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 51, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    51, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 51, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 51, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 51, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 50, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 50, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 50, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 50, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 50, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    50, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 50, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 50, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 50, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 50, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 49, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 49, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 49, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 49, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    49, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 49, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 49, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 49, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 49, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 49, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 48, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 55, 48, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 55, 48, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55,
-    48, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 48, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 48, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 55, 48, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 55, 48, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 48, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 55, 48, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 57, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 57, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    57, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 57, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 57, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 57, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 57, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 57, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 57, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 57, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 56, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    56, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 56, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 56, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 56, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 56, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 56, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 56, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 56, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 56, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    55, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 55, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 55, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 55, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 55, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 55, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 55, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 55, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 55, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    55, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 54, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 54, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 54, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 54, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 54, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 54, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 54, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 54, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    54, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 54, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 53, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 53, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 53, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 53, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 53, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 53, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 53, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    53, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 53, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 53, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 52, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 52, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 52, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 52, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 52, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 52, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    52, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 52, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 52, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 52, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 51, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 51, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 51, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 51, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 51, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    51, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 51, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 51, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 51, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 51, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 50, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 50, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 50, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 50, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    50, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 50, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 50, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 50, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 50, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 50, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 49, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 49, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 49, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    49, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 49, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 49, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 49, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 49, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 49, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 49, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 48, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 54, 48, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54,
-    48, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 48, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 48, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 54, 48, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 54, 48, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 48, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 54, 48, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 54, 48, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 57, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    57, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 57, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 57, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 57, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 57, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 57, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 57, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 57, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 57, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    56, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 56, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 56, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 56, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 56, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 56, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 56, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 56, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 56, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    56, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 55, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 55, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 55, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 55, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 55, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 55, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 55, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 55, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    55, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 55, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 54, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 54, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 54, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 54, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 54, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 54, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 54, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    54, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 54, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 54, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 53, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 53, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 53, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 53, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 53, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 53, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    53, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 53, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 53, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 53, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 52, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 52, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 52, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 52, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 52, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    52, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 52, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 52, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 52, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 52, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 51, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 51, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 51, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 51, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    51, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 51, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 51, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 51, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 51, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 51, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 50, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 50, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 50, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    50, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 50, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 50, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 50, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 50, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 50, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 50, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 49, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 49, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    49, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 49, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 49, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 49, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 49, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 49, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 49, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 49, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 48, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53,
-    48, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 48, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 48, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 53, 48, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 53, 48, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 48, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 53, 48, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 53, 48, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 53, 48, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    57, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 57, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 57, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 57, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 57, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 57, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 57, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 57, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 57, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    57, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 56, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 56, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 56, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 56, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 56, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 56, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 56, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 56, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    56, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 56, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 55, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 55, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 55, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 55, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 55, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 55, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 55, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    55, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 55, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 55, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 54, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 54, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 54, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 54, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 54, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 54, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    54, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 54, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 54, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 54, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 53, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 53, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 53, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 53, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 53, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    53, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 53, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 53, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 53, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 53, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 52, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 52, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 52, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 52, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    52, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 52, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 52, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 52, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 52, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 52, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 51, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 51, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 51, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    51, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 51, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 51, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 51, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 51, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 51, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 51, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 50, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 50, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    50, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 50, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 50, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 50, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 50, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 50, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 50, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 50, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 49, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    49, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 49, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 49, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 49, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 49, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 49, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 49, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 49, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 49, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    48, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 48, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 48, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 52, 48, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 52, 48, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 48, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52, 48, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 52, 48, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 52, 48, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 52,
-    48, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 57, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 57, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 57, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 57, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 57, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 57, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 57, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 57, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    57, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 57, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 56, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 56, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 56, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 56, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 56, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 56, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 56, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    56, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 56, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 56, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 55, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 55, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 55, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 55, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 55, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 55, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    55, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 55, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 55, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 55, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 54, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 54, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 54, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 54, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 54, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    54, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 54, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 54, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 54, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 54, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 53, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 53, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 53, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 53, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    53, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 53, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 53, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 53, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 53, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 53, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 52, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 52, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 52, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    52, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 52, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 52, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 52, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 52, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 52, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 52, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 51, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 51, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    51, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 51, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 51, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 51, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 51, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 51, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 51, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 51, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 50, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    50, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 50, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 50, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 50, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 50, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 50, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 50, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 50, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 50, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    49, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 49, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 49, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 49, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 49, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 49, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 49, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 49, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 49, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    49, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 48, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 48, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 51, 48, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 51, 48, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 48, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 48, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 51, 48, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 51, 48, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51,
-    48, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 51, 48, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 57, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 57, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 57, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 57, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 57, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 57, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 57, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    57, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 57, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 57, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 56, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 56, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 56, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 56, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 56, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 56, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    56, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 56, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 56, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 56, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 55, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 55, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 55, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 55, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 55, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    55, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 55, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 55, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 55, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 55, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 54, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 54, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 54, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 54, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    54, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 54, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 54, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 54, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 54, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 54, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 53, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 53, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 53, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    53, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 53, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 53, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 53, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 53, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 53, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 53, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 52, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 52, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    52, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 52, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 52, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 52, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 52, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 52, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 52, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 52, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 51, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    51, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 51, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 51, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 51, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 51, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 51, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 51, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 51, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 51, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    50, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 50, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 50, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 50, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 50, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 50, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 50, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 50, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 50, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    50, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 49, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 49, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 49, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 49, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 49, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 49, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 49, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 49, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    49, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 49, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 48, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 50, 48, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 50, 48, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 48, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 48, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 50, 48, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 50, 48, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50,
-    48, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 48, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 50, 48, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 57, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 57, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 57, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 57, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 57, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 57, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    57, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 57, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 57, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 57, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 56, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 56, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 56, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 56, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 56, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    56, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 56, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 56, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 56, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 56, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 55, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 55, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 55, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 55, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    55, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 55, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 55, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 55, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 55, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 55, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 54, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 54, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 54, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    54, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 54, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 54, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 54, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 54, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 54, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 54, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 53, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 53, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    53, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 53, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 53, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 53, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 53, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 53, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 53, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 53, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 52, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    52, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 52, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 52, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 52, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 52, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 52, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 52, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 52, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 52, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    51, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 51, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 51, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 51, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 51, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 51, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 51, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 51, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 51, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    51, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 50, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 50, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 50, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 50, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 50, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 50, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 50, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 50, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    50, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 50, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 49, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 49, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 49, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 49, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 49, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 49, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 49, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    49, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 49, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 49, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 48, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 49, 48, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 48, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 48, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 49, 48, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 49, 48, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49,
-    48, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 48, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 49, 48, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 49, 48, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 57, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 57, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 57, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 57, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 57, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    57, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 57, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 57, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 57, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 57, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 56, 57,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 56, 56, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 56, 55, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 56, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    56, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 56, 52, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 56, 51, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 56, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 56, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 56, 48,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 55, 57, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 55, 56, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 55, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    55, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 55, 53, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 55, 52, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 55, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 55, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 55, 49,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 55, 48, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 54, 57, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 54, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    54, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 54, 54, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 54, 53, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 54, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 54, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 54, 50,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 54, 49, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 54, 48, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 53, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    53, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 53, 55, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 53, 54, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 53, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 53, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 53, 51,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 53, 50, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 53, 49, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 53, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    52, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 52, 56, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 52, 55, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 52, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 52, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 52, 52,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 52, 51, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 52, 50, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 52, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    52, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 51, 57, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 51, 56, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 51, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 51, 54, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 51, 53,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 51, 52, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 51, 51, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 51, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    51, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 51, 48, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 50, 57, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 50, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 50, 55, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 50, 54,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 50, 53, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 50, 52, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 50, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    50, 50, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 50, 49, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 50, 48, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 49, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 49, 56, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 49, 55,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 49, 54, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 49, 53, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 49, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    49, 51, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 49, 50, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 49, 49, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 49, 48, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84,
-    45, 48, 48, 57, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 48, 56,
-    128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 48, 55, 128, 67, 79, 77,
-    80, 79, 78, 69, 78, 84, 45, 48, 48, 54, 128, 67, 79, 77, 80, 79, 78, 69,
-    78, 84, 45, 48, 48, 53, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48,
-    48, 52, 128, 67, 79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 48, 51, 128, 67,
-    79, 77, 80, 79, 78, 69, 78, 84, 45, 48, 48, 50, 128, 67, 79, 77, 80, 79,
-    78, 69, 78, 84, 45, 48, 48, 49, 128, 67, 79, 77, 80, 79, 78, 69, 78, 212,
-    67, 79, 77, 80, 76, 73, 65, 78, 67, 69, 128, 67, 79, 77, 80, 76, 69, 84,
-    73, 79, 78, 128, 67, 79, 77, 80, 76, 69, 84, 69, 68, 128, 67, 79, 77, 80,
-    76, 69, 77, 69, 78, 84, 128, 67, 79, 77, 80, 65, 83, 83, 128, 67, 79, 77,
-    80, 65, 82, 69, 128, 67, 79, 77, 77, 79, 206, 67, 79, 77, 77, 69, 82, 67,
-    73, 65, 204, 67, 79, 77, 77, 65, 78, 68, 128, 67, 79, 77, 77, 65, 128,
-    67, 79, 77, 77, 193, 67, 79, 77, 69, 84, 128, 67, 79, 77, 66, 73, 78, 69,
-    68, 128, 67, 79, 77, 66, 73, 78, 65, 84, 73, 79, 78, 128, 67, 79, 77, 66,
-    128, 67, 79, 76, 85, 77, 78, 128, 67, 79, 76, 79, 82, 128, 67, 79, 76,
-    76, 73, 83, 73, 79, 206, 67, 79, 76, 76, 128, 67, 79, 76, 196, 67, 79,
-    73, 78, 128, 67, 79, 70, 70, 73, 78, 128, 67, 79, 69, 78, 71, 128, 67,
-    79, 69, 78, 199, 67, 79, 68, 65, 128, 67, 79, 67, 79, 78, 85, 84, 128,
-    67, 79, 67, 75, 84, 65, 73, 204, 67, 79, 67, 75, 82, 79, 65, 67, 72, 128,
-    67, 79, 65, 84, 128, 67, 79, 65, 83, 84, 69, 82, 128, 67, 79, 65, 128,
-    67, 77, 51, 48, 50, 128, 67, 77, 51, 48, 49, 128, 67, 77, 49, 49, 52,
-    128, 67, 77, 49, 49, 50, 128, 67, 77, 49, 49, 48, 128, 67, 77, 49, 48,
-    57, 128, 67, 77, 49, 48, 56, 128, 67, 77, 49, 48, 55, 128, 67, 77, 49,
-    48, 53, 128, 67, 77, 49, 48, 52, 128, 67, 77, 49, 48, 51, 128, 67, 77,
-    49, 48, 50, 128, 67, 77, 49, 48, 49, 128, 67, 77, 49, 48, 48, 128, 67,
-    77, 48, 57, 57, 128, 67, 77, 48, 57, 56, 128, 67, 77, 48, 57, 55, 128,
-    67, 77, 48, 57, 54, 128, 67, 77, 48, 57, 53, 128, 67, 77, 48, 57, 52,
-    128, 67, 77, 48, 57, 50, 128, 67, 77, 48, 57, 49, 128, 67, 77, 48, 57,
-    48, 128, 67, 77, 48, 56, 57, 128, 67, 77, 48, 56, 56, 128, 67, 77, 48,
-    56, 55, 128, 67, 77, 48, 56, 54, 128, 67, 77, 48, 56, 53, 128, 67, 77,
-    48, 56, 52, 128, 67, 77, 48, 56, 51, 128, 67, 77, 48, 56, 50, 128, 67,
-    77, 48, 56, 49, 128, 67, 77, 48, 56, 48, 128, 67, 77, 48, 55, 57, 128,
-    67, 77, 48, 55, 56, 128, 67, 77, 48, 55, 54, 128, 67, 77, 48, 55, 53, 66,
-    128, 67, 77, 48, 55, 53, 128, 67, 77, 48, 55, 52, 128, 67, 77, 48, 55,
-    51, 128, 67, 77, 48, 55, 50, 128, 67, 77, 48, 55, 49, 128, 67, 77, 48,
-    55, 48, 128, 67, 77, 48, 54, 57, 128, 67, 77, 48, 54, 56, 128, 67, 77,
-    48, 54, 55, 128, 67, 77, 48, 54, 54, 128, 67, 77, 48, 54, 52, 128, 67,
-    77, 48, 54, 51, 128, 67, 77, 48, 54, 50, 128, 67, 77, 48, 54, 49, 128,
-    67, 77, 48, 54, 48, 128, 67, 77, 48, 53, 57, 128, 67, 77, 48, 53, 56,
-    128, 67, 77, 48, 53, 54, 128, 67, 77, 48, 53, 53, 128, 67, 77, 48, 53,
-    52, 128, 67, 77, 48, 53, 51, 128, 67, 77, 48, 53, 50, 128, 67, 77, 48,
-    53, 49, 128, 67, 77, 48, 53, 48, 128, 67, 77, 48, 52, 57, 128, 67, 77,
-    48, 52, 55, 128, 67, 77, 48, 52, 54, 128, 67, 77, 48, 52, 52, 128, 67,
-    77, 48, 52, 49, 128, 67, 77, 48, 52, 48, 128, 67, 77, 48, 51, 57, 128,
-    67, 77, 48, 51, 56, 128, 67, 77, 48, 51, 55, 128, 67, 77, 48, 51, 54,
-    128, 67, 77, 48, 51, 53, 128, 67, 77, 48, 51, 52, 128, 67, 77, 48, 51,
-    51, 128, 67, 77, 48, 51, 48, 128, 67, 77, 48, 50, 57, 128, 67, 77, 48,
-    50, 56, 128, 67, 77, 48, 50, 55, 128, 67, 77, 48, 50, 54, 128, 67, 77,
-    48, 50, 53, 128, 67, 77, 48, 50, 52, 128, 67, 77, 48, 50, 51, 128, 67,
-    77, 48, 50, 49, 128, 67, 77, 48, 49, 57, 128, 67, 77, 48, 49, 55, 128,
-    67, 77, 48, 49, 53, 128, 67, 77, 48, 49, 51, 128, 67, 77, 48, 49, 50, 66,
-    128, 67, 77, 48, 49, 50, 128, 67, 77, 48, 49, 49, 128, 67, 77, 48, 49,
-    48, 128, 67, 77, 48, 48, 57, 128, 67, 77, 48, 48, 56, 128, 67, 77, 48,
-    48, 55, 128, 67, 77, 48, 48, 54, 128, 67, 77, 48, 48, 53, 128, 67, 77,
-    48, 48, 52, 128, 67, 77, 48, 48, 50, 128, 67, 77, 48, 48, 49, 128, 67,
-    77, 128, 67, 205, 67, 76, 85, 83, 84, 69, 82, 45, 73, 78, 73, 84, 73, 65,
-    204, 67, 76, 85, 83, 84, 69, 82, 45, 70, 73, 78, 65, 204, 67, 76, 85, 83,
-    84, 69, 210, 67, 76, 85, 66, 83, 128, 67, 76, 85, 66, 45, 83, 80, 79, 75,
-    69, 196, 67, 76, 85, 66, 128, 67, 76, 85, 194, 67, 76, 79, 87, 206, 67,
-    76, 79, 86, 69, 82, 128, 67, 76, 79, 85, 68, 128, 67, 76, 79, 85, 196,
-    67, 76, 79, 84, 72, 69, 83, 128, 67, 76, 79, 84, 72, 128, 67, 76, 79, 83,
-    69, 84, 128, 67, 76, 79, 83, 69, 78, 69, 83, 83, 128, 67, 76, 79, 83, 69,
-    68, 128, 67, 76, 79, 83, 197, 67, 76, 79, 67, 75, 87, 73, 83, 197, 67,
-    76, 79, 67, 203, 67, 76, 73, 86, 73, 83, 128, 67, 76, 73, 80, 66, 79, 65,
-    82, 68, 128, 67, 76, 73, 78, 75, 73, 78, 199, 67, 76, 73, 78, 71, 73, 78,
-    199, 67, 76, 73, 77, 66, 73, 78, 71, 128, 67, 76, 73, 77, 65, 67, 85, 83,
-    128, 67, 76, 73, 70, 70, 128, 67, 76, 73, 67, 75, 128, 67, 76, 73, 67,
-    203, 67, 76, 69, 70, 45, 50, 128, 67, 76, 69, 70, 45, 49, 128, 67, 76,
-    69, 70, 128, 67, 76, 69, 198, 67, 76, 69, 65, 86, 69, 82, 128, 67, 76,
-    69, 65, 210, 67, 76, 65, 83, 83, 73, 67, 65, 204, 67, 76, 65, 80, 80, 73,
-    78, 199, 67, 76, 65, 80, 80, 69, 210, 67, 76, 65, 78, 128, 67, 76, 65,
-    206, 67, 76, 65, 77, 83, 72, 69, 76, 204, 67, 76, 65, 73, 77, 128, 67,
-    76, 128, 67, 73, 88, 128, 67, 73, 86, 73, 76, 73, 65, 78, 128, 67, 73,
-    84, 89, 83, 67, 65, 80, 69, 128, 67, 73, 84, 89, 83, 67, 65, 80, 197, 67,
-    73, 84, 201, 67, 73, 84, 65, 84, 73, 79, 206, 67, 73, 84, 128, 67, 73,
-    82, 67, 85, 211, 67, 73, 82, 67, 85, 77, 70, 76, 69, 88, 128, 67, 73, 82,
-    67, 85, 77, 70, 76, 69, 216, 67, 73, 82, 67, 85, 76, 65, 84, 73, 79, 206,
-    67, 73, 82, 67, 76, 73, 78, 71, 128, 67, 73, 82, 67, 76, 73, 78, 199, 67,
-    73, 82, 67, 76, 69, 83, 128, 67, 73, 82, 67, 76, 69, 211, 67, 73, 82, 67,
-    76, 69, 68, 128, 67, 73, 80, 128, 67, 73, 78, 78, 65, 66, 65, 82, 128,
-    67, 73, 78, 69, 77, 65, 128, 67, 73, 206, 67, 73, 77, 128, 67, 73, 205,
-    67, 73, 73, 128, 67, 73, 69, 88, 128, 67, 73, 69, 85, 67, 45, 83, 83, 65,
-    78, 71, 80, 73, 69, 85, 80, 128, 67, 73, 69, 85, 67, 45, 80, 73, 69, 85,
-    80, 128, 67, 73, 69, 85, 67, 45, 73, 69, 85, 78, 71, 128, 67, 73, 69, 85,
-    195, 67, 73, 69, 84, 128, 67, 73, 69, 80, 128, 67, 73, 69, 128, 67, 72,
-    89, 88, 128, 67, 72, 89, 84, 128, 67, 72, 89, 82, 88, 128, 67, 72, 89,
-    82, 128, 67, 72, 89, 80, 128, 67, 72, 87, 86, 128, 67, 72, 85, 88, 128,
-    67, 72, 85, 82, 88, 128, 67, 72, 85, 82, 67, 72, 128, 67, 72, 85, 82,
-    128, 67, 72, 85, 80, 128, 67, 72, 85, 79, 88, 128, 67, 72, 85, 79, 84,
-    128, 67, 72, 85, 79, 80, 128, 67, 72, 85, 79, 128, 67, 72, 85, 76, 65,
-    128, 67, 72, 85, 128, 67, 72, 82, 89, 83, 65, 78, 84, 72, 69, 77, 85, 77,
-    128, 67, 72, 82, 79, 78, 79, 85, 128, 67, 72, 82, 79, 78, 79, 78, 128,
-    67, 72, 82, 79, 77, 193, 67, 72, 82, 79, 193, 67, 72, 82, 73, 86, 73,
-    128, 67, 72, 82, 73, 83, 84, 77, 65, 83, 128, 67, 72, 82, 73, 83, 84, 77,
-    65, 211, 67, 72, 79, 89, 128, 67, 72, 79, 88, 128, 67, 72, 79, 84, 128,
-    67, 72, 79, 82, 69, 86, 77, 193, 67, 72, 79, 82, 65, 83, 77, 73, 65, 206,
-    67, 72, 79, 80, 83, 84, 73, 67, 75, 83, 128, 67, 72, 79, 80, 128, 67, 72,
-    79, 75, 69, 128, 67, 72, 79, 69, 128, 67, 72, 79, 67, 79, 76, 65, 84,
-    197, 67, 72, 79, 65, 128, 67, 72, 73, 84, 85, 69, 85, 77, 83, 83, 65, 78,
-    71, 83, 73, 79, 83, 128, 67, 72, 73, 84, 85, 69, 85, 77, 83, 83, 65, 78,
-    71, 67, 73, 69, 85, 67, 128, 67, 72, 73, 84, 85, 69, 85, 77, 83, 73, 79,
-    83, 128, 67, 72, 73, 84, 85, 69, 85, 77, 67, 73, 69, 85, 67, 128, 67, 72,
-    73, 84, 85, 69, 85, 77, 67, 72, 73, 69, 85, 67, 72, 128, 67, 72, 73, 82,
-    79, 78, 128, 67, 72, 73, 82, 69, 84, 128, 67, 72, 73, 80, 77, 85, 78, 75,
-    128, 67, 72, 73, 78, 79, 79, 203, 67, 72, 73, 78, 71, 128, 67, 72, 73,
-    78, 69, 83, 197, 67, 72, 73, 78, 128, 67, 72, 73, 77, 69, 128, 67, 72,
-    73, 77, 128, 67, 72, 73, 76, 76, 213, 67, 72, 73, 76, 68, 82, 69, 206,
-    67, 72, 73, 76, 68, 128, 67, 72, 73, 76, 128, 67, 72, 73, 75, 201, 67,
-    72, 73, 69, 85, 67, 72, 45, 75, 72, 73, 69, 85, 75, 72, 128, 67, 72, 73,
-    69, 85, 67, 72, 45, 72, 73, 69, 85, 72, 128, 67, 72, 73, 69, 85, 67, 200,
-    67, 72, 73, 67, 75, 69, 78, 128, 67, 72, 73, 67, 75, 128, 67, 72, 73,
-    128, 67, 72, 201, 67, 72, 72, 73, 77, 128, 67, 72, 72, 65, 128, 67, 72,
-    69, 88, 128, 67, 72, 69, 86, 82, 79, 78, 128, 67, 72, 69, 86, 82, 79,
-    206, 67, 72, 69, 84, 128, 67, 72, 69, 83, 84, 78, 85, 84, 128, 67, 72,
-    69, 83, 84, 128, 67, 72, 69, 83, 211, 67, 72, 69, 82, 89, 128, 67, 72,
-    69, 82, 82, 217, 67, 72, 69, 82, 82, 73, 69, 83, 128, 67, 72, 69, 81, 85,
-    69, 82, 69, 196, 67, 72, 69, 80, 128, 67, 72, 69, 76, 89, 85, 83, 84, 75,
-    65, 128, 67, 72, 69, 76, 78, 85, 128, 67, 72, 69, 73, 78, 65, 80, 128,
-    67, 72, 69, 73, 75, 72, 69, 73, 128, 67, 72, 69, 73, 75, 72, 65, 78, 128,
-    67, 72, 69, 69, 83, 197, 67, 72, 69, 69, 82, 73, 78, 199, 67, 72, 69, 69,
-    77, 128, 67, 72, 69, 69, 75, 211, 67, 72, 69, 69, 75, 128, 67, 72, 69,
-    69, 128, 67, 72, 69, 67, 75, 69, 210, 67, 72, 69, 67, 75, 128, 67, 72,
-    69, 67, 203, 67, 72, 197, 67, 72, 65, 88, 128, 67, 72, 65, 86, 73, 89,
-    65, 78, 73, 128, 67, 72, 65, 84, 84, 65, 87, 65, 128, 67, 72, 65, 84,
-    128, 67, 72, 65, 83, 72, 75, 65, 128, 67, 72, 65, 83, 72, 75, 193, 67,
-    72, 65, 82, 84, 128, 67, 72, 65, 82, 212, 67, 72, 65, 82, 73, 79, 84,
-    128, 67, 72, 65, 82, 73, 79, 212, 67, 72, 65, 82, 65, 67, 84, 69, 82, 83,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 66, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 65, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 57, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 70, 56, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 70, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 70, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 70, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    70, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 51,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 50, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 49, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 70, 48, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 69, 70, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 69, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 69, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 69, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    69, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 69, 65,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 69, 57, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 69, 56, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 69, 55, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 69, 54, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 69, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 69, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 69, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    69, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 69, 49,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 69, 48, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 68, 70, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 68, 69, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 68, 68, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 68, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 68, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 68, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    68, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 68, 56,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 68, 55, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 68, 54, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 68, 53, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 68, 52, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 68, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 68, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 68, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    68, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 70,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 69, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 68, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 67, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 67, 66, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 67, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 67, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 67, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    67, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 54,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 67, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 67, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 67, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 67, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 66, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    66, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 66, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 66, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 66, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 66, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    66, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 66, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 66, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 65, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 65, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 65, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    65, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 65, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 65, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 65, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 65, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    65, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 65, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 57, 70, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 57, 69, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 57, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 57, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 57, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    57, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 57, 57,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 57, 56, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 57, 55, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 57, 54, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 57, 53, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 57, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 57, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 57, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    57, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 57, 48,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 70, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 69, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 68, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 56, 67, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 56, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 56, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 56, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    56, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 55,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 54, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 53, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 56, 52, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 56, 51, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 56, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 56, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 56, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    55, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 69,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 68, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 67, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 66, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 55, 65, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 55, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 55, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 55, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    55, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 53,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 52, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 51, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 55, 50, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 55, 49, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 55, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 54, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 54, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    54, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 67,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 66, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 65, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 57, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 54, 56, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 54, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 54, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 54, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    54, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 51,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 50, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 49, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 54, 48, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 53, 70, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 53, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 53, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 53, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    53, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 53, 65,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 53, 57, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 53, 56, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 53, 55, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 53, 54, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 53, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 53, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 53, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    53, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 53, 49,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 53, 48, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 52, 70, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 52, 69, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 52, 68, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 52, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 52, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 52, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    52, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 52, 56,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 52, 55, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 52, 54, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 52, 53, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 52, 52, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 52, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 52, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 52, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    52, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 70,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 69, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 68, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 67, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 51, 66, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 51, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 51, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 51, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    51, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 54,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 51, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 51, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 51, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 51, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 50, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    50, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 50, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 50, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 50, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 50, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    50, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 50, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 50, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 49, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 49, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 49, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    49, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 49, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 49, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 49, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 49, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    49, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 49, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 48, 70, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 48, 69, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 48, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 48, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 48, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    48, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 48, 57,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 48, 56, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 48, 55, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 48, 54, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 50, 48, 53, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 50, 48, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 50, 48, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 50, 48, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50,
-    48, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 50, 48, 48,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 70, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 69, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 68, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 70, 67, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 70, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 70, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 70, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    70, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 55,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 54, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 53, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 70, 52, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 70, 51, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 70, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 70, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 70, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    69, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 69,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 68, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 67, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 66, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 69, 65, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 69, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 69, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 69, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    69, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 53,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 52, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 51, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 69, 50, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 69, 49, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 69, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 68, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 68, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    68, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 67,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 66, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 65, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 57, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 68, 56, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 68, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 68, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 68, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    68, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 51,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 50, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 49, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 68, 48, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 67, 70, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 67, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 67, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 67, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    67, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 67, 65,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 67, 57, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 67, 56, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 67, 55, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 67, 54, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 67, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 67, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 67, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    67, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 67, 49,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 67, 48, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 66, 70, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 66, 69, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 66, 68, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 66, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 66, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 66, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    66, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 66, 56,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 66, 55, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 66, 54, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 66, 53, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 66, 52, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 66, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 66, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 66, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    66, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 70,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 69, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 68, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 67, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 65, 66, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 65, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 65, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 65, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    65, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 54,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 65, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 65, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 65, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 65, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 57, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    57, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 57, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 57, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 57, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 57, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    57, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 57, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 57, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 56, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 56, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 56, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    56, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 56, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 56, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 56, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 56, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    56, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 56, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 55, 70, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 55, 69, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 55, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 55, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 55, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    55, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 55, 57,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 55, 56, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 55, 55, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 55, 54, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 66, 49, 55, 53, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 66, 49, 55, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 66, 49, 55, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    66, 49, 55, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49,
-    55, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 66, 49, 55, 48,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 68, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 68, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 68, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 68, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 68, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 68, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 67, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    67, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 67, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 67, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 67, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 67, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    67, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 67, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 67, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 66, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 66, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 66, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    66, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 66, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 66, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 66, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 66, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    66, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 66, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 65, 70, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 65, 69, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 65, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 65, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 65, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    65, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 65, 57,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 65, 56, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 65, 55, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 65, 54, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 65, 53, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 65, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 65, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 65, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    65, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 65, 48,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 70, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 69, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 68, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 57, 67, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 57, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 57, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 57, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    57, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 55,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 54, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 53, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 57, 52, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 57, 51, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 57, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 57, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 57, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    56, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 69,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 68, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 67, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 66, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 56, 65, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 56, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 56, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 56, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    56, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 53,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 52, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 51, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 56, 50, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 56, 49, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 56, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 55, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 55, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    55, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 67,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 66, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 65, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 57, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 55, 56, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 55, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 55, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 55, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    55, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 51,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 50, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 49, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 55, 48, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 54, 70, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 54, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 54, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 54, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    54, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 54, 65,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 54, 57, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 54, 56, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 54, 55, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 54, 54, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 54, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 54, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 54, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    54, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 54, 49,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 54, 48, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 53, 70, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 53, 69, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 53, 68, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 53, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 53, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 53, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    53, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 53, 56,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 53, 55, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 53, 54, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 53, 53, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 53, 52, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 53, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 53, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 53, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    53, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 70,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 69, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 68, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 67, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 52, 66, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 52, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 52, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 52, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    52, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 54,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 52, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 52, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 52, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 52, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 51, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    51, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 51, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 51, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 51, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 51, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    51, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 51, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 51, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 50, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 50, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 50, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    50, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 50, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 50, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 50, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 50, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    50, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 50, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 49, 70, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 49, 69, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 49, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 49, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 49, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    49, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 49, 57,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 49, 56, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 49, 55, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 49, 54, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 49, 53, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 49, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 49, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 49, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    49, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 49, 48,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 70, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 69, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 68, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 48, 67, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 48, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 48, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 48, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67,
-    48, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 55,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 54, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 53, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 67, 48, 52, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 67, 48, 51, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 67, 48, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 67, 48, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 67, 48, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    70, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 69,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 68, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 67, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 66, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 70, 65, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 70, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 70, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 70, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    70, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 53,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 52, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 51, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 70, 50, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 70, 49, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 70, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 69, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 69, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    69, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 67,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 66, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 65, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 57, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 69, 56, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 69, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 69, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 69, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    69, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 51,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 50, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 49, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 69, 48, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 68, 70, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 68, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 68, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 68, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    68, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 68, 65,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 68, 57, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 68, 56, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 68, 55, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 68, 54, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 68, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 68, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 68, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    68, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 68, 49,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 68, 48, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 67, 70, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 67, 69, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 67, 68, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 67, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 67, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 67, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    67, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 67, 56,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 67, 55, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 67, 54, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 67, 53, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 67, 52, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 67, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 67, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 67, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    67, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 70,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 69, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 68, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 67, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 66, 66, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 66, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 66, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 66, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    66, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 54,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 66, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 66, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 66, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 66, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 65, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    65, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 65, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 65, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 65, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 65, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    65, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 65, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 65, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 57, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 57, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 57, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    57, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 57, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 57, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 57, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 57, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    57, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 57, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 56, 70, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 56, 69, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 56, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 56, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 56, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    56, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 56, 57,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 56, 56, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 56, 55, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 56, 54, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 56, 53, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 56, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 56, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 56, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    56, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 56, 48,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 70, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 69, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 68, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 55, 67, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 55, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 55, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 55, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    55, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 55,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 54, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 53, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 55, 52, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 55, 51, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 55, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 55, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 55, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    54, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 69,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 68, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 67, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 66, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 54, 65, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 54, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 54, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 54, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    54, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 53,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 52, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 51, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 54, 50, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 54, 49, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 54, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 53, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 53, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    53, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 67,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 66, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 65, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 57, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 53, 56, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 53, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 53, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 53, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    53, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 51,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 50, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 49, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 53, 48, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 52, 70, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 52, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 52, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 52, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    52, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 52, 65,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 52, 57, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 52, 56, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 52, 55, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 52, 54, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 52, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 52, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 52, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    52, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 52, 49,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 52, 48, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 51, 70, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 51, 69, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 51, 68, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 51, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 51, 66, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 51, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    51, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 51, 56,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 51, 55, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 51, 54, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 51, 53, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 51, 52, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 51, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 51, 50, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 51, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    51, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 70,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 69, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 68, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 67, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 50, 66, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 50, 65, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 50, 57, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 50, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    50, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 54,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 53, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 52, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 50, 51, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 50, 50, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 50, 49, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 50, 48, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 49, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    49, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 68,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 67, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 66, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 65, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 49, 57, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 49, 56, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 49, 55, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 49, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    49, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 52,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 51, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 50, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 49, 49, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 49, 48, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 48, 70, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 48, 69, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 48, 68, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    48, 67, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 66,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 65, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 57, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 56, 128, 67, 72, 65, 82, 65,
-    67, 84, 69, 82, 45, 49, 56, 66, 48, 55, 128, 67, 72, 65, 82, 65, 67, 84,
-    69, 82, 45, 49, 56, 66, 48, 54, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82,
-    45, 49, 56, 66, 48, 53, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49,
-    56, 66, 48, 52, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66,
-    48, 51, 128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 50,
-    128, 67, 72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 49, 128, 67,
-    72, 65, 82, 65, 67, 84, 69, 82, 45, 49, 56, 66, 48, 48, 128, 67, 72, 65,
-    82, 65, 67, 84, 69, 82, 128, 67, 72, 65, 82, 65, 67, 84, 69, 210, 67, 72,
-    65, 82, 128, 67, 72, 65, 80, 84, 69, 82, 128, 67, 72, 65, 80, 128, 67,
-    72, 65, 78, 71, 128, 67, 72, 65, 78, 128, 67, 72, 65, 77, 75, 79, 128,
-    67, 72, 65, 77, 73, 76, 79, 78, 128, 67, 72, 65, 77, 73, 76, 73, 128, 67,
-    72, 65, 205, 67, 72, 65, 75, 77, 193, 67, 72, 65, 73, 78, 83, 128, 67,
-    72, 65, 68, 65, 128, 67, 72, 65, 196, 67, 72, 65, 65, 128, 67, 71, 74,
-    128, 67, 69, 88, 128, 67, 69, 86, 73, 84, 85, 128, 67, 69, 82, 69, 83,
-    128, 67, 69, 82, 69, 77, 79, 78, 89, 128, 67, 69, 82, 69, 75, 128, 67,
-    69, 82, 45, 87, 65, 128, 67, 69, 80, 128, 67, 69, 79, 78, 71, 67, 72, 73,
-    69, 85, 77, 83, 83, 65, 78, 71, 83, 73, 79, 83, 128, 67, 69, 79, 78, 71,
-    67, 72, 73, 69, 85, 77, 83, 83, 65, 78, 71, 67, 73, 69, 85, 67, 128, 67,
-    69, 79, 78, 71, 67, 72, 73, 69, 85, 77, 83, 73, 79, 83, 128, 67, 69, 79,
-    78, 71, 67, 72, 73, 69, 85, 77, 67, 73, 69, 85, 67, 128, 67, 69, 79, 78,
-    71, 67, 72, 73, 69, 85, 77, 67, 72, 73, 69, 85, 67, 72, 128, 67, 69, 78,
-    84, 85, 82, 73, 65, 204, 67, 69, 78, 84, 82, 69, 76, 73, 78, 197, 67, 69,
-    78, 84, 82, 69, 68, 128, 67, 69, 78, 84, 82, 69, 196, 67, 69, 78, 84, 82,
-    69, 128, 67, 69, 78, 84, 82, 197, 67, 69, 78, 84, 82, 65, 76, 73, 90, 65,
-    84, 73, 79, 206, 67, 69, 78, 128, 67, 69, 76, 84, 73, 195, 67, 69, 76,
-    83, 73, 85, 83, 128, 67, 69, 76, 69, 66, 82, 65, 84, 73, 79, 78, 128, 67,
-    69, 73, 82, 84, 128, 67, 69, 73, 76, 73, 78, 71, 128, 67, 69, 73, 76, 73,
-    78, 199, 67, 69, 69, 86, 128, 67, 69, 69, 66, 128, 67, 69, 69, 128, 67,
-    69, 68, 73, 76, 76, 65, 128, 67, 69, 68, 73, 76, 76, 193, 67, 69, 68,
-    201, 67, 69, 67, 69, 75, 128, 67, 69, 67, 65, 75, 128, 67, 69, 67, 65,
-    203, 67, 69, 65, 76, 67, 128, 67, 67, 85, 128, 67, 67, 79, 128, 67, 67,
-    73, 128, 67, 67, 72, 85, 128, 67, 67, 72, 79, 128, 67, 67, 72, 73, 128,
-    67, 67, 72, 72, 85, 128, 67, 67, 72, 72, 79, 128, 67, 67, 72, 72, 73,
-    128, 67, 67, 72, 72, 69, 69, 128, 67, 67, 72, 72, 69, 128, 67, 67, 72,
-    72, 65, 65, 128, 67, 67, 72, 72, 65, 128, 67, 67, 72, 69, 69, 128, 67,
-    67, 72, 69, 128, 67, 67, 72, 65, 65, 128, 67, 67, 72, 65, 128, 67, 67,
-    72, 128, 67, 67, 69, 69, 128, 67, 67, 65, 65, 128, 67, 65, 89, 78, 128,
-    67, 65, 89, 65, 78, 78, 65, 128, 67, 65, 88, 128, 67, 65, 86, 69, 128,
-    67, 65, 85, 84, 73, 79, 206, 67, 65, 85, 76, 68, 82, 79, 78, 128, 67, 65,
-    85, 68, 65, 84, 197, 67, 65, 85, 68, 65, 128, 67, 65, 85, 67, 65, 83, 73,
-    65, 206, 67, 65, 85, 128, 67, 65, 84, 65, 87, 65, 128, 67, 65, 84, 128,
-    67, 65, 212, 67, 65, 83, 84, 76, 69, 128, 67, 65, 83, 75, 69, 212, 67,
-    65, 82, 89, 83, 84, 73, 65, 206, 67, 65, 82, 84, 87, 72, 69, 69, 76, 128,
-    67, 65, 82, 84, 82, 73, 68, 71, 69, 128, 67, 65, 82, 84, 128, 67, 65, 82,
-    211, 67, 65, 82, 82, 79, 84, 128, 67, 65, 82, 82, 73, 65, 71, 197, 67,
-    65, 82, 80, 69, 78, 84, 82, 217, 67, 65, 82, 208, 67, 65, 82, 79, 85, 83,
-    69, 204, 67, 65, 82, 79, 78, 128, 67, 65, 82, 79, 206, 67, 65, 82, 73,
-    203, 67, 65, 82, 73, 65, 206, 67, 65, 82, 69, 84, 128, 67, 65, 82, 69,
-    212, 67, 65, 82, 197, 67, 65, 82, 68, 83, 128, 67, 65, 82, 196, 67, 65,
-    82, 128, 67, 65, 210, 67, 65, 80, 85, 212, 67, 65, 80, 84, 73, 86, 69,
-    128, 67, 65, 80, 82, 73, 67, 79, 82, 78, 128, 67, 65, 80, 80, 69, 196,
-    67, 65, 80, 79, 128, 67, 65, 80, 73, 84, 85, 76, 85, 77, 128, 67, 65, 80,
-    73, 84, 65, 76, 128, 67, 65, 78, 84, 73, 76, 76, 65, 84, 73, 79, 206, 67,
-    65, 78, 79, 69, 128, 67, 65, 78, 78, 79, 78, 128, 67, 65, 78, 78, 69,
-    196, 67, 65, 78, 199, 67, 65, 78, 69, 128, 67, 65, 78, 68, 89, 128, 67,
-    65, 78, 68, 82, 65, 66, 73, 78, 68, 85, 128, 67, 65, 78, 68, 82, 65, 66,
-    73, 78, 68, 213, 67, 65, 78, 68, 82, 65, 128, 67, 65, 78, 68, 82, 193,
-    67, 65, 78, 68, 76, 69, 128, 67, 65, 78, 67, 69, 82, 128, 67, 65, 78, 67,
-    69, 76, 76, 65, 84, 73, 79, 206, 67, 65, 78, 67, 69, 76, 128, 67, 65, 78,
-    67, 69, 204, 67, 65, 78, 128, 67, 65, 77, 80, 73, 78, 71, 128, 67, 65,
-    77, 78, 85, 195, 67, 65, 77, 69, 82, 65, 128, 67, 65, 77, 69, 82, 193,
-    67, 65, 77, 69, 76, 128, 67, 65, 76, 89, 65, 128, 67, 65, 76, 89, 193,
-    67, 65, 76, 88, 128, 67, 65, 76, 76, 128, 67, 65, 76, 204, 67, 65, 76,
-    69, 78, 68, 65, 82, 128, 67, 65, 76, 69, 78, 68, 65, 210, 67, 65, 76, 67,
-    85, 76, 65, 84, 79, 82, 128, 67, 65, 76, 67, 128, 67, 65, 75, 82, 65,
-    128, 67, 65, 75, 197, 67, 65, 73, 128, 67, 65, 72, 128, 67, 65, 69, 83,
-    85, 82, 65, 128, 67, 65, 68, 85, 67, 69, 85, 83, 128, 67, 65, 68, 193,
-    67, 65, 67, 84, 85, 83, 128, 67, 65, 66, 76, 69, 87, 65, 89, 128, 67, 65,
-    66, 73, 78, 69, 84, 128, 67, 65, 66, 66, 65, 71, 69, 45, 84, 82, 69, 69,
-    128, 67, 65, 65, 78, 71, 128, 67, 65, 65, 73, 128, 67, 193, 67, 48, 50,
-    52, 128, 67, 48, 50, 51, 128, 67, 48, 50, 50, 128, 67, 48, 50, 49, 128,
-    67, 48, 50, 48, 128, 67, 48, 49, 57, 128, 67, 48, 49, 56, 128, 67, 48,
-    49, 55, 128, 67, 48, 49, 54, 128, 67, 48, 49, 53, 128, 67, 48, 49, 52,
-    128, 67, 48, 49, 51, 128, 67, 48, 49, 50, 128, 67, 48, 49, 49, 128, 67,
-    48, 49, 48, 65, 128, 67, 48, 49, 48, 128, 67, 48, 48, 57, 128, 67, 48,
-    48, 56, 128, 67, 48, 48, 55, 128, 67, 48, 48, 54, 128, 67, 48, 48, 53,
-    128, 67, 48, 48, 52, 128, 67, 48, 48, 51, 128, 67, 48, 48, 50, 67, 128,
-    67, 48, 48, 50, 66, 128, 67, 48, 48, 50, 65, 128, 67, 48, 48, 50, 128,
-    67, 48, 48, 49, 128, 67, 45, 83, 73, 77, 80, 76, 73, 70, 73, 69, 196, 67,
-    45, 51, 57, 128, 67, 45, 49, 56, 128, 66, 90, 85, 78, 199, 66, 90, 72,
-    201, 66, 89, 84, 197, 66, 89, 69, 76, 79, 82, 85, 83, 83, 73, 65, 78, 45,
-    85, 75, 82, 65, 73, 78, 73, 65, 206, 66, 88, 71, 128, 66, 87, 73, 128,
-    66, 87, 69, 69, 128, 66, 87, 69, 128, 66, 87, 65, 128, 66, 85, 85, 77,
-    73, 83, 72, 128, 66, 85, 84, 84, 79, 78, 128, 66, 85, 84, 84, 79, 206,
-    66, 85, 84, 84, 69, 82, 70, 76, 89, 128, 66, 85, 84, 84, 69, 82, 128, 66,
-    85, 212, 66, 85, 83, 84, 211, 66, 85, 83, 212, 66, 85, 83, 83, 89, 69,
-    82, 85, 128, 66, 85, 83, 73, 78, 69, 83, 211, 66, 85, 211, 66, 85, 82,
-    213, 66, 85, 82, 82, 73, 84, 79, 128, 66, 85, 82, 50, 128, 66, 85, 210,
-    66, 85, 79, 89, 128, 66, 85, 79, 88, 128, 66, 85, 79, 80, 128, 66, 85,
-    78, 78, 217, 66, 85, 78, 71, 128, 66, 85, 77, 80, 217, 66, 85, 76, 85,
-    71, 128, 66, 85, 76, 85, 199, 66, 85, 76, 76, 83, 69, 89, 69, 128, 66,
-    85, 76, 76, 211, 66, 85, 76, 76, 72, 79, 82, 78, 128, 66, 85, 76, 76, 72,
-    79, 82, 206, 66, 85, 76, 76, 69, 84, 128, 66, 85, 76, 76, 69, 212, 66,
-    85, 76, 76, 128, 66, 85, 76, 66, 128, 66, 85, 75, 89, 128, 66, 85, 73,
-    76, 68, 73, 78, 71, 83, 128, 66, 85, 73, 76, 68, 73, 78, 71, 128, 66, 85,
-    73, 76, 68, 73, 78, 199, 66, 85, 72, 73, 196, 66, 85, 71, 73, 78, 69, 83,
-    197, 66, 85, 71, 128, 66, 85, 70, 70, 65, 76, 79, 128, 66, 85, 68, 128,
-    66, 85, 67, 75, 76, 69, 128, 66, 85, 67, 75, 69, 84, 128, 66, 85, 66, 66,
-    76, 69, 83, 128, 66, 85, 66, 66, 76, 69, 128, 66, 85, 66, 66, 76, 197,
-    66, 83, 84, 65, 82, 128, 66, 83, 75, 85, 210, 66, 83, 75, 65, 173, 66,
-    83, 68, 85, 211, 66, 82, 85, 83, 200, 66, 82, 79, 87, 206, 66, 82, 79,
-    79, 77, 128, 66, 82, 79, 78, 90, 69, 128, 66, 82, 79, 75, 69, 206, 66,
-    82, 79, 67, 67, 79, 76, 73, 128, 66, 82, 79, 65, 196, 66, 82, 73, 83, 84,
-    76, 69, 128, 66, 82, 73, 71, 72, 84, 78, 69, 83, 211, 66, 82, 73, 69, 70,
-    83, 128, 66, 82, 73, 69, 70, 67, 65, 83, 69, 128, 66, 82, 73, 68, 71,
-    197, 66, 82, 73, 68, 197, 66, 82, 73, 67, 75, 128, 66, 82, 73, 128, 66,
-    82, 69, 86, 73, 83, 128, 66, 82, 69, 86, 69, 45, 77, 65, 67, 82, 79, 78,
-    128, 66, 82, 69, 86, 197, 66, 82, 69, 65, 84, 72, 217, 66, 82, 69, 65,
-    84, 200, 66, 82, 69, 65, 83, 84, 45, 70, 69, 69, 68, 73, 78, 71, 128, 66,
-    82, 69, 65, 75, 84, 72, 82, 79, 85, 71, 72, 128, 66, 82, 68, 193, 66, 82,
-    65, 78, 67, 72, 73, 78, 199, 66, 82, 65, 78, 67, 72, 69, 83, 128, 66, 82,
-    65, 78, 67, 72, 128, 66, 82, 65, 78, 67, 200, 66, 82, 65, 75, 67, 69, 84,
-    128, 66, 82, 65, 73, 78, 128, 66, 82, 65, 67, 75, 69, 84, 211, 66, 82,
-    65, 67, 75, 69, 84, 69, 196, 66, 82, 65, 67, 75, 69, 84, 128, 66, 82, 65,
-    67, 75, 69, 212, 66, 82, 65, 67, 69, 128, 66, 81, 128, 66, 80, 72, 128,
-    66, 79, 89, 211, 66, 79, 89, 128, 66, 79, 88, 73, 78, 199, 66, 79, 87,
-    84, 73, 69, 128, 66, 79, 87, 84, 73, 197, 66, 79, 87, 76, 73, 78, 71,
-    128, 66, 79, 87, 76, 128, 66, 79, 87, 204, 66, 79, 87, 73, 78, 199, 66,
-    79, 215, 66, 79, 85, 81, 85, 69, 84, 128, 66, 79, 85, 81, 85, 69, 212,
-    66, 79, 85, 78, 68, 65, 82, 217, 66, 79, 84, 84, 79, 77, 45, 83, 72, 65,
-    68, 69, 196, 66, 79, 84, 84, 79, 77, 45, 76, 73, 71, 72, 84, 69, 196, 66,
-    79, 84, 84, 79, 77, 128, 66, 79, 84, 84, 79, 205, 66, 79, 84, 84, 76, 69,
-    128, 66, 79, 84, 84, 76, 197, 66, 79, 84, 200, 66, 79, 82, 90, 89, 128,
-    66, 79, 82, 90, 65, 89, 65, 128, 66, 79, 82, 85, 84, 79, 128, 66, 79, 82,
-    65, 88, 45, 51, 128, 66, 79, 82, 65, 88, 45, 50, 128, 66, 79, 82, 65, 88,
-    128, 66, 79, 80, 79, 77, 79, 70, 207, 66, 79, 79, 84, 83, 128, 66, 79,
-    79, 84, 128, 66, 79, 79, 77, 69, 82, 65, 78, 71, 128, 66, 79, 79, 75, 83,
-    128, 66, 79, 79, 75, 77, 65, 82, 75, 128, 66, 79, 79, 75, 77, 65, 82,
-    203, 66, 79, 78, 69, 128, 66, 79, 77, 66, 128, 66, 79, 77, 128, 66, 79,
-    76, 84, 128, 66, 79, 76, 212, 66, 79, 72, 65, 73, 82, 73, 195, 66, 79,
-    68, 89, 128, 66, 79, 68, 217, 66, 79, 65, 82, 128, 66, 79, 65, 128, 66,
-    76, 85, 69, 66, 69, 82, 82, 73, 69, 83, 128, 66, 76, 85, 69, 128, 66, 76,
-    85, 197, 66, 76, 79, 87, 73, 78, 199, 66, 76, 79, 87, 70, 73, 83, 72,
-    128, 66, 76, 79, 215, 66, 76, 79, 83, 83, 79, 77, 128, 66, 76, 79, 79,
-    68, 128, 66, 76, 79, 78, 196, 66, 76, 79, 67, 75, 45, 55, 128, 66, 76,
-    79, 67, 75, 45, 54, 128, 66, 76, 79, 67, 75, 45, 53, 128, 66, 76, 79, 67,
-    75, 45, 52, 128, 66, 76, 79, 67, 75, 45, 51, 128, 66, 76, 79, 67, 75, 45,
-    50, 128, 66, 76, 79, 67, 75, 45, 49, 51, 53, 56, 128, 66, 76, 79, 67, 75,
-    128, 66, 76, 73, 78, 203, 66, 76, 65, 78, 75, 128, 66, 76, 65, 78, 203,
-    66, 76, 65, 68, 197, 66, 76, 65, 67, 75, 76, 69, 84, 84, 69, 210, 66, 76,
-    65, 67, 75, 70, 79, 79, 212, 66, 76, 65, 67, 75, 45, 76, 69, 84, 84, 69,
-    210, 66, 76, 65, 67, 75, 45, 70, 69, 65, 84, 72, 69, 82, 69, 196, 66, 76,
-    65, 67, 75, 128, 66, 75, 65, 173, 66, 73, 84, 84, 69, 82, 128, 66, 73,
-    84, 73, 78, 199, 66, 73, 84, 197, 66, 73, 84, 67, 79, 73, 206, 66, 73,
-    83, 79, 78, 128, 66, 73, 83, 77, 85, 84, 200, 66, 73, 83, 77, 73, 76, 76,
-    65, 200, 66, 73, 83, 72, 79, 208, 66, 73, 83, 69, 67, 84, 73, 78, 199,
-    66, 73, 83, 65, 72, 128, 66, 73, 82, 85, 128, 66, 73, 82, 84, 72, 68, 65,
-    217, 66, 73, 82, 71, 65, 128, 66, 73, 82, 71, 193, 66, 73, 82, 68, 128,
-    66, 73, 79, 72, 65, 90, 65, 82, 196, 66, 73, 78, 79, 86, 73, 76, 69, 128,
-    66, 73, 78, 79, 67, 85, 76, 65, 210, 66, 73, 78, 68, 73, 78, 199, 66, 73,
-    78, 68, 73, 128, 66, 73, 78, 65, 82, 217, 66, 73, 76, 76, 73, 79, 78, 83,
-    128, 66, 73, 76, 76, 73, 65, 82, 68, 83, 128, 66, 73, 76, 76, 69, 196,
-    66, 73, 76, 65, 66, 73, 65, 204, 66, 73, 75, 73, 78, 73, 128, 66, 73, 71,
-    128, 66, 73, 199, 66, 73, 69, 84, 128, 66, 73, 68, 69, 78, 84, 65, 204,
-    66, 73, 68, 65, 75, 85, 79, 206, 66, 73, 67, 89, 67, 76, 73, 83, 84, 128,
-    66, 73, 67, 89, 67, 76, 69, 83, 128, 66, 73, 67, 89, 67, 76, 69, 128, 66,
-    73, 67, 69, 80, 83, 128, 66, 73, 66, 76, 69, 45, 67, 82, 69, 197, 66, 73,
-    66, 128, 66, 201, 66, 72, 85, 128, 66, 72, 79, 79, 128, 66, 72, 79, 128,
-    66, 72, 73, 128, 66, 72, 69, 84, 72, 128, 66, 72, 69, 69, 128, 66, 72,
-    69, 128, 66, 72, 65, 84, 84, 73, 80, 82, 79, 76, 213, 66, 72, 65, 77,
-    128, 66, 72, 65, 76, 69, 128, 66, 72, 65, 76, 197, 66, 72, 65, 73, 75,
-    83, 85, 75, 201, 66, 72, 65, 65, 128, 66, 72, 65, 128, 66, 69, 89, 89,
-    65, 76, 128, 66, 69, 88, 128, 66, 69, 86, 69, 82, 65, 71, 69, 128, 66,
-    69, 86, 69, 82, 65, 71, 197, 66, 69, 84, 87, 69, 69, 78, 128, 66, 69, 84,
-    87, 69, 69, 206, 66, 69, 84, 72, 128, 66, 69, 84, 65, 128, 66, 69, 84,
-    193, 66, 69, 212, 66, 69, 83, 73, 68, 197, 66, 69, 82, 75, 65, 78, 65,
-    206, 66, 69, 82, 66, 69, 210, 66, 69, 80, 128, 66, 69, 79, 82, 195, 66,
-    69, 78, 90, 69, 78, 197, 66, 69, 78, 84, 207, 66, 69, 78, 84, 128, 66,
-    69, 78, 212, 66, 69, 78, 71, 65, 76, 201, 66, 69, 78, 68, 69, 128, 66,
-    69, 78, 68, 128, 66, 69, 78, 196, 66, 69, 206, 66, 69, 76, 84, 128, 66,
-    69, 76, 212, 66, 69, 76, 79, 215, 66, 69, 76, 76, 72, 79, 208, 66, 69,
-    76, 76, 128, 66, 69, 76, 204, 66, 69, 76, 71, 84, 72, 79, 210, 66, 69,
-    73, 84, 72, 128, 66, 69, 72, 73, 78, 196, 66, 69, 72, 69, 72, 128, 66,
-    69, 72, 69, 200, 66, 69, 72, 128, 66, 69, 200, 66, 69, 71, 73, 78, 78,
-    73, 78, 71, 128, 66, 69, 71, 73, 78, 78, 69, 82, 128, 66, 69, 71, 73,
-    206, 66, 69, 70, 79, 82, 197, 66, 69, 69, 84, 76, 69, 128, 66, 69, 69,
-    84, 65, 128, 66, 69, 69, 210, 66, 69, 69, 72, 73, 86, 69, 128, 66, 69,
-    69, 72, 128, 66, 69, 69, 200, 66, 69, 67, 65, 85, 83, 69, 128, 66, 69,
-    65, 86, 69, 82, 128, 66, 69, 65, 86, 69, 210, 66, 69, 65, 84, 73, 78,
-    199, 66, 69, 65, 84, 128, 66, 69, 65, 82, 68, 69, 196, 66, 69, 65, 82,
-    128, 66, 69, 65, 210, 66, 69, 65, 78, 83, 128, 66, 69, 65, 78, 128, 66,
-    69, 65, 77, 69, 196, 66, 69, 65, 68, 83, 128, 66, 69, 65, 67, 200, 66,
-    67, 65, 68, 128, 66, 67, 65, 196, 66, 66, 89, 88, 128, 66, 66, 89, 84,
-    128, 66, 66, 89, 80, 128, 66, 66, 89, 128, 66, 66, 85, 88, 128, 66, 66,
-    85, 84, 128, 66, 66, 85, 82, 88, 128, 66, 66, 85, 82, 128, 66, 66, 85,
-    80, 128, 66, 66, 85, 79, 88, 128, 66, 66, 85, 79, 80, 128, 66, 66, 85,
-    79, 128, 66, 66, 85, 128, 66, 66, 79, 88, 128, 66, 66, 79, 84, 128, 66,
-    66, 79, 80, 128, 66, 66, 79, 128, 66, 66, 73, 88, 128, 66, 66, 73, 80,
-    128, 66, 66, 73, 69, 88, 128, 66, 66, 73, 69, 84, 128, 66, 66, 73, 69,
-    80, 128, 66, 66, 73, 69, 128, 66, 66, 73, 128, 66, 66, 69, 88, 128, 66,
-    66, 69, 80, 128, 66, 66, 69, 69, 128, 66, 66, 65, 88, 128, 66, 66, 65,
-    84, 128, 66, 66, 65, 80, 128, 66, 66, 65, 65, 128, 66, 65, 89, 65, 78,
-    78, 65, 128, 66, 65, 85, 128, 66, 65, 84, 84, 69, 82, 89, 128, 66, 65,
-    84, 72, 84, 85, 66, 128, 66, 65, 84, 72, 65, 77, 65, 83, 65, 84, 128, 66,
-    65, 84, 72, 128, 66, 65, 84, 200, 66, 65, 84, 65, 203, 66, 65, 83, 83,
-    65, 128, 66, 65, 83, 83, 193, 66, 65, 83, 75, 69, 84, 66, 65, 76, 204,
-    66, 65, 83, 72, 75, 73, 210, 66, 65, 83, 72, 128, 66, 65, 83, 69, 76, 73,
-    78, 197, 66, 65, 83, 69, 66, 65, 76, 76, 128, 66, 65, 83, 69, 128, 66,
-    65, 83, 197, 66, 65, 82, 83, 128, 66, 65, 82, 211, 66, 65, 82, 82, 73,
-    69, 82, 128, 66, 65, 82, 82, 69, 75, 72, 128, 66, 65, 82, 82, 69, 69,
-    128, 66, 65, 82, 82, 69, 197, 66, 65, 82, 76, 73, 78, 69, 128, 66, 65,
-    82, 76, 69, 89, 128, 66, 65, 82, 73, 89, 79, 79, 83, 65, 78, 128, 66, 65,
-    82, 66, 69, 210, 66, 65, 82, 65, 50, 128, 66, 65, 210, 66, 65, 78, 84,
-    79, 67, 128, 66, 65, 78, 75, 78, 79, 84, 197, 66, 65, 78, 75, 128, 66,
-    65, 78, 203, 66, 65, 78, 74, 79, 128, 66, 65, 78, 68, 128, 66, 65, 78,
-    65, 78, 65, 128, 66, 65, 78, 50, 128, 66, 65, 78, 178, 66, 65, 77, 66,
-    79, 79, 83, 128, 66, 65, 77, 66, 79, 79, 128, 66, 65, 76, 85, 68, 65,
-    128, 66, 65, 76, 76, 80, 79, 73, 78, 212, 66, 65, 76, 76, 79, 84, 128,
-    66, 65, 76, 76, 79, 212, 66, 65, 76, 76, 79, 79, 78, 45, 83, 80, 79, 75,
-    69, 196, 66, 65, 76, 76, 79, 79, 78, 128, 66, 65, 76, 76, 69, 212, 66,
-    65, 76, 68, 128, 66, 65, 76, 65, 71, 128, 66, 65, 76, 128, 66, 65, 204,
-    66, 65, 73, 82, 75, 65, 78, 128, 66, 65, 73, 77, 65, 73, 128, 66, 65, 72,
-    84, 128, 66, 65, 72, 73, 82, 71, 79, 77, 85, 75, 72, 65, 128, 66, 65, 72,
-    65, 82, 50, 128, 66, 65, 72, 65, 82, 178, 66, 65, 72, 128, 66, 65, 71,
-    85, 69, 84, 84, 197, 66, 65, 71, 83, 128, 66, 65, 71, 71, 65, 71, 197,
-    66, 65, 71, 69, 76, 128, 66, 65, 71, 65, 128, 66, 65, 71, 51, 128, 66,
-    65, 199, 66, 65, 68, 77, 73, 78, 84, 79, 206, 66, 65, 68, 71, 69, 82,
-    128, 66, 65, 68, 71, 69, 128, 66, 65, 196, 66, 65, 67, 84, 82, 73, 65,
-    206, 66, 65, 67, 79, 78, 128, 66, 65, 67, 75, 87, 65, 82, 68, 128, 66,
-    65, 67, 75, 83, 80, 65, 67, 69, 128, 66, 65, 67, 75, 83, 76, 65, 83, 72,
-    128, 66, 65, 67, 75, 83, 76, 65, 83, 200, 66, 65, 67, 75, 83, 76, 65, 78,
-    84, 69, 196, 66, 65, 67, 75, 72, 65, 78, 196, 66, 65, 67, 75, 45, 84, 73,
-    76, 84, 69, 196, 66, 65, 67, 75, 128, 66, 65, 67, 203, 66, 65, 66, 89,
-    128, 66, 65, 66, 217, 66, 65, 65, 82, 69, 82, 85, 128, 66, 65, 45, 50,
-    128, 66, 51, 48, 53, 128, 66, 50, 53, 180, 66, 50, 52, 183, 66, 50, 52,
-    179, 66, 50, 52, 178, 66, 50, 52, 177, 66, 50, 52, 176, 66, 50, 51, 179,
-    66, 50, 51, 177, 66, 50, 51, 176, 66, 50, 50, 181, 66, 50, 50, 176, 66,
-    49, 57, 177, 66, 49, 55, 182, 66, 49, 55, 179, 66, 49, 54, 57, 128, 66,
-    49, 54, 56, 128, 66, 49, 54, 55, 128, 66, 49, 54, 54, 128, 66, 49, 54,
-    53, 128, 66, 49, 54, 52, 128, 66, 49, 54, 179, 66, 49, 54, 178, 66, 49,
-    54, 49, 128, 66, 49, 54, 48, 128, 66, 49, 53, 185, 66, 49, 53, 56, 128,
-    66, 49, 53, 55, 128, 66, 49, 53, 182, 66, 49, 53, 53, 128, 66, 49, 53,
-    52, 128, 66, 49, 53, 51, 128, 66, 49, 53, 50, 128, 66, 49, 53, 177, 66,
-    49, 53, 48, 128, 66, 49, 52, 54, 128, 66, 49, 52, 181, 66, 49, 52, 50,
-    128, 66, 49, 52, 177, 66, 49, 52, 176, 66, 49, 51, 181, 66, 49, 51, 179,
-    66, 49, 51, 50, 128, 66, 49, 51, 177, 66, 49, 51, 176, 66, 49, 50, 184,
-    66, 49, 50, 183, 66, 49, 50, 181, 66, 49, 50, 179, 66, 49, 50, 178, 66,
-    49, 50, 177, 66, 49, 50, 176, 66, 49, 48, 57, 205, 66, 49, 48, 57, 198,
-    66, 49, 48, 56, 205, 66, 49, 48, 56, 198, 66, 49, 48, 55, 205, 66, 49,
-    48, 55, 198, 66, 49, 48, 54, 205, 66, 49, 48, 54, 198, 66, 49, 48, 53,
-    205, 66, 49, 48, 53, 198, 66, 49, 48, 181, 66, 49, 48, 180, 66, 49, 48,
-    178, 66, 49, 48, 176, 66, 48, 57, 177, 66, 48, 57, 176, 66, 48, 56, 57,
-    128, 66, 48, 56, 183, 66, 48, 56, 54, 128, 66, 48, 56, 181, 66, 48, 56,
-    51, 128, 66, 48, 56, 50, 128, 66, 48, 56, 177, 66, 48, 56, 176, 66, 48,
-    55, 57, 128, 66, 48, 55, 184, 66, 48, 55, 183, 66, 48, 55, 182, 66, 48,
-    55, 181, 66, 48, 55, 180, 66, 48, 55, 179, 66, 48, 55, 178, 66, 48, 55,
-    177, 66, 48, 55, 176, 66, 48, 54, 185, 66, 48, 54, 184, 66, 48, 54, 183,
-    66, 48, 54, 182, 66, 48, 54, 181, 66, 48, 54, 52, 128, 66, 48, 54, 51,
-    128, 66, 48, 54, 178, 66, 48, 54, 177, 66, 48, 54, 176, 66, 48, 53, 185,
-    66, 48, 53, 184, 66, 48, 53, 183, 66, 48, 53, 54, 128, 66, 48, 53, 181,
-    66, 48, 53, 180, 66, 48, 53, 179, 66, 48, 53, 178, 66, 48, 53, 177, 66,
-    48, 53, 176, 66, 48, 52, 57, 128, 66, 48, 52, 184, 66, 48, 52, 55, 128,
-    66, 48, 52, 182, 66, 48, 52, 181, 66, 48, 52, 180, 66, 48, 52, 179, 66,
-    48, 52, 178, 66, 48, 52, 177, 66, 48, 52, 176, 66, 48, 51, 185, 66, 48,
-    51, 184, 66, 48, 51, 183, 66, 48, 51, 182, 66, 48, 51, 52, 128, 66, 48,
-    51, 179, 66, 48, 51, 178, 66, 48, 51, 177, 66, 48, 51, 176, 66, 48, 50,
-    185, 66, 48, 50, 184, 66, 48, 50, 183, 66, 48, 50, 182, 66, 48, 50, 181,
-    66, 48, 50, 180, 66, 48, 50, 179, 66, 48, 50, 50, 128, 66, 48, 50, 177,
-    66, 48, 50, 176, 66, 48, 49, 57, 128, 66, 48, 49, 56, 128, 66, 48, 49,
-    183, 66, 48, 49, 182, 66, 48, 49, 181, 66, 48, 49, 180, 66, 48, 49, 179,
-    66, 48, 49, 178, 66, 48, 49, 177, 66, 48, 49, 176, 66, 48, 48, 57, 128,
-    66, 48, 48, 185, 66, 48, 48, 56, 128, 66, 48, 48, 184, 66, 48, 48, 55,
-    128, 66, 48, 48, 183, 66, 48, 48, 54, 128, 66, 48, 48, 182, 66, 48, 48,
-    53, 65, 128, 66, 48, 48, 53, 128, 66, 48, 48, 181, 66, 48, 48, 52, 128,
-    66, 48, 48, 180, 66, 48, 48, 51, 128, 66, 48, 48, 179, 66, 48, 48, 50,
-    128, 66, 48, 48, 178, 66, 48, 48, 49, 128, 66, 48, 48, 177, 65, 90, 90,
-    193, 65, 90, 85, 128, 65, 89, 66, 128, 65, 89, 65, 72, 128, 65, 88, 69,
-    128, 65, 87, 90, 128, 65, 87, 88, 128, 65, 87, 81, 128, 65, 87, 69, 128,
-    65, 87, 67, 128, 65, 87, 65, 217, 65, 86, 79, 67, 65, 68, 79, 128, 65,
-    86, 69, 83, 84, 65, 206, 65, 86, 69, 82, 65, 71, 197, 65, 86, 65, 75, 82,
-    65, 72, 65, 83, 65, 78, 89, 65, 128, 65, 86, 65, 71, 82, 65, 72, 65, 128,
-    65, 85, 89, 65, 78, 78, 65, 128, 65, 85, 84, 85, 77, 78, 128, 65, 85, 84,
-    79, 77, 79, 66, 73, 76, 69, 128, 65, 85, 84, 79, 77, 65, 84, 69, 196, 65,
-    85, 84, 207, 65, 85, 83, 84, 82, 65, 204, 65, 85, 82, 73, 80, 73, 71, 77,
-    69, 78, 84, 128, 65, 85, 82, 65, 77, 65, 90, 68, 65, 65, 72, 65, 128, 65,
-    85, 82, 65, 77, 65, 90, 68, 65, 65, 45, 50, 128, 65, 85, 82, 65, 77, 65,
-    90, 68, 65, 65, 128, 65, 85, 78, 78, 128, 65, 85, 71, 85, 83, 84, 128,
-    65, 85, 71, 77, 69, 78, 84, 65, 84, 73, 79, 206, 65, 85, 69, 128, 65, 85,
-    66, 69, 82, 71, 73, 78, 69, 128, 65, 84, 84, 73, 195, 65, 84, 84, 72, 65,
-    67, 65, 78, 128, 65, 84, 84, 69, 78, 84, 73, 79, 78, 128, 65, 84, 84, 65,
-    203, 65, 84, 84, 65, 67, 72, 73, 78, 199, 65, 84, 84, 65, 67, 72, 69,
-    196, 65, 84, 79, 205, 65, 84, 78, 65, 200, 65, 84, 77, 65, 65, 85, 128,
-    65, 84, 73, 89, 65, 128, 65, 84, 73, 85, 128, 65, 84, 73, 75, 82, 65, 77,
-    65, 128, 65, 84, 72, 76, 69, 84, 73, 195, 65, 84, 72, 65, 82, 86, 65, 86,
-    69, 68, 73, 195, 65, 84, 72, 65, 80, 65, 83, 67, 65, 206, 65, 84, 72, 45,
-    84, 72, 65, 76, 65, 84, 72, 65, 128, 65, 83, 90, 128, 65, 83, 89, 85, 82,
-    193, 65, 83, 89, 77, 80, 84, 79, 84, 73, 67, 65, 76, 76, 217, 65, 83, 84,
-    82, 79, 78, 79, 77, 73, 67, 65, 204, 65, 83, 84, 82, 79, 76, 79, 71, 73,
-    67, 65, 204, 65, 83, 84, 82, 65, 69, 65, 128, 65, 83, 84, 79, 78, 73, 83,
-    72, 69, 196, 65, 83, 84, 69, 82, 73, 83, 77, 128, 65, 83, 84, 69, 82, 73,
-    83, 75, 211, 65, 83, 84, 69, 82, 73, 83, 75, 128, 65, 83, 84, 69, 82, 73,
-    83, 203, 65, 83, 84, 69, 82, 73, 83, 67, 85, 83, 128, 65, 83, 83, 89, 82,
-    73, 65, 206, 65, 83, 83, 69, 82, 84, 73, 79, 78, 128, 65, 83, 80, 73, 82,
-    65, 84, 73, 79, 78, 128, 65, 83, 80, 73, 82, 65, 84, 69, 196, 65, 83, 80,
-    69, 82, 128, 65, 83, 73, 65, 45, 65, 85, 83, 84, 82, 65, 76, 73, 65, 128,
-    65, 83, 72, 71, 65, 66, 128, 65, 83, 72, 69, 83, 128, 65, 83, 72, 57,
-    128, 65, 83, 72, 51, 128, 65, 83, 72, 178, 65, 83, 67, 73, 193, 65, 83,
-    67, 69, 78, 84, 128, 65, 83, 67, 69, 78, 68, 73, 78, 199, 65, 83, 65, 76,
-    50, 128, 65, 83, 45, 83, 65, 76, 65, 65, 84, 213, 65, 83, 45, 83, 65, 74,
-    68, 65, 128, 65, 82, 85, 72, 85, 65, 128, 65, 82, 84, 211, 65, 82, 84,
-    73, 83, 212, 65, 82, 84, 73, 67, 85, 76, 65, 84, 69, 196, 65, 82, 84, 65,
-    66, 197, 65, 82, 84, 65, 128, 65, 82, 83, 69, 79, 83, 128, 65, 82, 83,
-    69, 79, 211, 65, 82, 83, 69, 78, 73, 67, 128, 65, 82, 82, 79, 87, 83,
-    128, 65, 82, 82, 79, 87, 211, 65, 82, 82, 79, 87, 72, 69, 65, 68, 83,
-    128, 65, 82, 82, 79, 87, 72, 69, 65, 68, 45, 83, 72, 65, 80, 69, 196, 65,
-    82, 82, 79, 87, 72, 69, 65, 68, 128, 65, 82, 82, 79, 87, 72, 69, 65, 196,
-    65, 82, 82, 79, 87, 45, 84, 65, 73, 76, 128, 65, 82, 82, 73, 86, 73, 78,
-    71, 128, 65, 82, 82, 73, 86, 69, 128, 65, 82, 82, 65, 89, 128, 65, 82,
-    80, 69, 71, 71, 73, 65, 84, 207, 65, 82, 79, 85, 83, 73, 78, 199, 65, 82,
-    79, 85, 82, 193, 65, 82, 79, 85, 78, 68, 45, 80, 82, 79, 70, 73, 76, 69,
-    128, 65, 82, 79, 85, 78, 196, 65, 82, 77, 89, 128, 65, 82, 77, 211, 65,
-    82, 77, 79, 85, 82, 128, 65, 82, 77, 69, 78, 73, 65, 206, 65, 82, 77,
-    128, 65, 82, 205, 65, 82, 76, 65, 85, 199, 65, 82, 75, 84, 73, 75, 207,
-    65, 82, 75, 65, 66, 128, 65, 82, 75, 65, 65, 78, 85, 128, 65, 82, 73, 83,
-    84, 69, 82, 65, 128, 65, 82, 73, 83, 84, 69, 82, 193, 65, 82, 73, 69, 83,
-    128, 65, 82, 71, 79, 84, 69, 82, 73, 128, 65, 82, 71, 79, 83, 89, 78, 84,
-    72, 69, 84, 79, 78, 128, 65, 82, 71, 73, 128, 65, 82, 69, 80, 65, 128,
-    65, 82, 69, 65, 128, 65, 82, 68, 72, 65, 86, 73, 83, 65, 82, 71, 65, 128,
-    65, 82, 68, 72, 65, 67, 65, 78, 68, 82, 65, 128, 65, 82, 67, 72, 65, 73,
-    79, 78, 128, 65, 82, 67, 72, 65, 73, 79, 206, 65, 82, 67, 72, 65, 73,
-    195, 65, 82, 67, 200, 65, 82, 67, 128, 65, 82, 195, 65, 82, 65, 77, 65,
-    73, 195, 65, 82, 65, 69, 65, 69, 128, 65, 82, 65, 69, 65, 45, 85, 128,
-    65, 82, 65, 69, 65, 45, 73, 128, 65, 82, 65, 69, 65, 45, 69, 79, 128, 65,
-    82, 65, 69, 65, 45, 69, 128, 65, 82, 65, 69, 65, 45, 65, 128, 65, 82, 65,
-    68, 128, 65, 82, 65, 196, 65, 82, 65, 66, 73, 67, 45, 73, 78, 68, 73,
-    195, 65, 82, 65, 66, 73, 65, 206, 65, 82, 45, 82, 85, 66, 128, 65, 82,
-    45, 82, 65, 72, 77, 65, 206, 65, 82, 45, 82, 65, 72, 69, 69, 77, 128, 65,
-    81, 85, 65, 82, 73, 85, 83, 128, 65, 81, 85, 65, 70, 79, 82, 84, 73, 83,
-    128, 65, 81, 85, 193, 65, 80, 85, 206, 65, 80, 82, 73, 76, 128, 65, 80,
-    80, 82, 79, 88, 73, 77, 65, 84, 69, 76, 217, 65, 80, 80, 82, 79, 88, 73,
-    77, 65, 84, 69, 128, 65, 80, 80, 82, 79, 65, 67, 72, 69, 211, 65, 80, 80,
-    82, 79, 65, 67, 72, 128, 65, 80, 80, 76, 73, 67, 65, 84, 73, 79, 78, 128,
-    65, 80, 80, 76, 73, 67, 65, 84, 73, 79, 206, 65, 80, 79, 84, 72, 69, 83,
-    128, 65, 80, 79, 84, 72, 69, 77, 65, 128, 65, 80, 79, 83, 84, 82, 79, 80,
-    72, 69, 128, 65, 80, 79, 83, 84, 82, 79, 70, 79, 83, 128, 65, 80, 79, 83,
-    84, 82, 79, 70, 79, 211, 65, 80, 79, 83, 84, 82, 79, 70, 79, 201, 65, 80,
-    79, 76, 76, 79, 78, 128, 65, 80, 79, 68, 69, 88, 73, 65, 128, 65, 80, 79,
-    68, 69, 82, 77, 193, 65, 80, 76, 79, 85, 78, 128, 65, 80, 76, 201, 65,
-    80, 204, 65, 80, 73, 78, 128, 65, 80, 69, 83, 207, 65, 80, 67, 128, 65,
-    80, 65, 82, 84, 128, 65, 80, 65, 65, 84, 79, 128, 65, 79, 85, 128, 65,
-    79, 82, 128, 65, 78, 89, 128, 65, 78, 85, 83, 86, 65, 82, 65, 89, 65,
-    128, 65, 78, 85, 83, 86, 65, 82, 65, 128, 65, 78, 85, 83, 86, 65, 82,
-    193, 65, 78, 85, 68, 65, 84, 84, 65, 128, 65, 78, 85, 68, 65, 84, 84,
-    193, 65, 78, 84, 73, 82, 69, 83, 84, 82, 73, 67, 84, 73, 79, 78, 128, 65,
-    78, 84, 73, 77, 79, 78, 89, 45, 50, 128, 65, 78, 84, 73, 77, 79, 78, 89,
-    128, 65, 78, 84, 73, 77, 79, 78, 217, 65, 78, 84, 73, 77, 79, 78, 73, 65,
-    84, 69, 128, 65, 78, 84, 73, 75, 69, 78, 79, 77, 65, 128, 65, 78, 84, 73,
-    75, 69, 78, 79, 75, 89, 76, 73, 83, 77, 65, 128, 65, 78, 84, 73, 70, 79,
-    78, 73, 65, 128, 65, 78, 84, 73, 67, 76, 79, 67, 75, 87, 73, 83, 69, 45,
-    82, 79, 84, 65, 84, 69, 196, 65, 78, 84, 73, 67, 76, 79, 67, 75, 87, 73,
-    83, 69, 128, 65, 78, 84, 73, 67, 76, 79, 67, 75, 87, 73, 83, 197, 65, 78,
-    84, 69, 78, 78, 65, 128, 65, 78, 84, 69, 78, 78, 193, 65, 78, 84, 65, 82,
-    71, 79, 77, 85, 75, 72, 65, 128, 65, 78, 83, 85, 218, 65, 78, 83, 72, 69,
-    128, 65, 78, 80, 69, 65, 128, 65, 78, 207, 65, 78, 78, 85, 73, 84, 217,
-    65, 78, 78, 79, 84, 65, 84, 73, 79, 206, 65, 78, 78, 65, 65, 85, 128, 65,
-    78, 75, 72, 128, 65, 78, 74, 73, 128, 65, 78, 73, 77, 65, 76, 128, 65,
-    78, 72, 85, 78, 78, 65, 128, 65, 78, 72, 85, 77, 65, 65, 128, 65, 78, 72,
-    85, 77, 128, 65, 78, 72, 85, 128, 65, 78, 72, 65, 65, 128, 65, 78, 72,
-    128, 65, 78, 71, 85, 76, 65, 82, 128, 65, 78, 71, 85, 73, 83, 72, 69,
-    196, 65, 78, 71, 83, 84, 82, 79, 205, 65, 78, 71, 82, 217, 65, 78, 71,
-    76, 73, 67, 65, 78, 193, 65, 78, 71, 76, 69, 68, 128, 65, 78, 71, 76, 69,
-    196, 65, 78, 71, 75, 72, 65, 78, 75, 72, 85, 128, 65, 78, 71, 75, 65,
-    128, 65, 78, 71, 69, 210, 65, 78, 71, 69, 76, 128, 65, 78, 71, 69, 68,
-    128, 65, 78, 68, 65, 80, 128, 65, 78, 67, 79, 82, 65, 128, 65, 78, 67,
-    72, 79, 82, 128, 65, 78, 65, 84, 82, 73, 67, 72, 73, 83, 77, 65, 128, 65,
-    78, 65, 84, 79, 77, 73, 67, 65, 204, 65, 78, 65, 80, 128, 65, 78, 45, 78,
-    73, 83, 70, 128, 65, 77, 85, 76, 69, 84, 128, 65, 77, 80, 83, 128, 65,
-    77, 80, 72, 79, 82, 65, 128, 65, 77, 80, 69, 82, 83, 65, 78, 68, 128, 65,
-    77, 80, 69, 82, 83, 65, 78, 196, 65, 77, 79, 85, 78, 212, 65, 77, 69, 82,
-    73, 67, 65, 83, 128, 65, 77, 69, 82, 73, 67, 65, 206, 65, 77, 66, 85, 76,
-    65, 78, 67, 69, 128, 65, 77, 66, 193, 65, 77, 66, 128, 65, 77, 65, 82,
-    128, 65, 77, 65, 210, 65, 77, 65, 76, 71, 65, 77, 65, 84, 73, 79, 206,
-    65, 77, 65, 76, 71, 65, 77, 128, 65, 76, 86, 69, 79, 76, 65, 210, 65, 76,
-    85, 77, 128, 65, 76, 84, 69, 82, 78, 65, 84, 73, 86, 197, 65, 76, 84, 69,
-    82, 78, 65, 84, 73, 79, 206, 65, 76, 84, 69, 82, 78, 65, 84, 73, 78, 71,
-    128, 65, 76, 84, 69, 82, 78, 65, 84, 73, 78, 199, 65, 76, 84, 69, 82, 78,
-    65, 84, 69, 128, 65, 76, 84, 69, 82, 78, 65, 84, 197, 65, 76, 84, 65,
-    128, 65, 76, 80, 72, 65, 128, 65, 76, 80, 72, 193, 65, 76, 80, 65, 80,
-    82, 65, 78, 65, 128, 65, 76, 80, 65, 80, 82, 65, 65, 78, 193, 65, 76, 80,
-    65, 128, 65, 76, 77, 79, 83, 212, 65, 76, 76, 79, 128, 65, 76, 76, 73,
-    65, 78, 67, 69, 128, 65, 76, 76, 201, 65, 76, 76, 65, 200, 65, 76, 76,
-    65, 65, 72, 128, 65, 76, 75, 65, 76, 73, 45, 50, 128, 65, 76, 75, 65, 76,
-    73, 128, 65, 76, 73, 71, 78, 69, 196, 65, 76, 73, 70, 85, 128, 65, 76,
-    73, 70, 128, 65, 76, 73, 198, 65, 76, 73, 69, 78, 128, 65, 76, 73, 69,
-    206, 65, 76, 71, 73, 218, 65, 76, 70, 65, 128, 65, 76, 69, 85, 212, 65,
-    76, 69, 82, 84, 128, 65, 76, 69, 80, 72, 128, 65, 76, 69, 77, 66, 73, 67,
-    128, 65, 76, 69, 70, 128, 65, 76, 66, 65, 78, 73, 65, 206, 65, 76, 65,
-    89, 78, 65, 65, 128, 65, 76, 65, 89, 72, 73, 77, 65, 193, 65, 76, 65, 89,
-    72, 73, 205, 65, 76, 65, 89, 72, 201, 65, 76, 65, 89, 72, 69, 128, 65,
-    76, 65, 89, 72, 197, 65, 76, 65, 89, 72, 65, 193, 65, 76, 65, 82, 205,
-    65, 76, 65, 80, 72, 128, 65, 76, 45, 76, 65, 75, 85, 78, 65, 128, 65, 76,
-    45, 74, 85, 90, 128, 65, 75, 85, 82, 213, 65, 75, 84, 73, 69, 83, 69, 76,
-    83, 75, 65, 66, 128, 65, 75, 83, 65, 128, 65, 75, 72, 77, 73, 77, 73,
-    195, 65, 75, 66, 65, 210, 65, 75, 65, 82, 65, 128, 65, 75, 65, 82, 193,
-    65, 73, 89, 65, 78, 78, 65, 128, 65, 73, 86, 73, 76, 73, 203, 65, 73, 86,
-    65, 128, 65, 73, 84, 79, 206, 65, 73, 82, 80, 76, 65, 78, 69, 128, 65,
-    73, 82, 80, 76, 65, 78, 197, 65, 73, 78, 213, 65, 73, 78, 78, 128, 65,
-    73, 76, 77, 128, 65, 73, 75, 65, 82, 65, 128, 65, 73, 72, 86, 85, 83,
-    128, 65, 72, 83, 68, 65, 128, 65, 72, 83, 65, 128, 65, 72, 79, 205, 65,
-    72, 65, 78, 199, 65, 72, 65, 71, 71, 65, 210, 65, 72, 65, 68, 128, 65,
-    71, 85, 78, 71, 128, 65, 71, 79, 71, 201, 65, 71, 71, 82, 65, 86, 65, 84,
-    73, 79, 78, 128, 65, 71, 71, 82, 65, 86, 65, 84, 69, 196, 65, 71, 65, 73,
-    78, 83, 212, 65, 71, 65, 73, 78, 128, 65, 70, 84, 69, 210, 65, 70, 83,
-    65, 65, 81, 128, 65, 70, 82, 73, 67, 65, 206, 65, 70, 79, 82, 69, 77, 69,
-    78, 84, 73, 79, 78, 69, 68, 128, 65, 70, 71, 72, 65, 78, 201, 65, 70, 70,
-    82, 73, 67, 65, 84, 73, 79, 206, 65, 70, 70, 73, 216, 65, 69, 89, 65, 78,
-    78, 65, 128, 65, 69, 89, 128, 65, 69, 83, 67, 85, 76, 65, 80, 73, 85, 83,
-    128, 65, 69, 83, 67, 128, 65, 69, 83, 128, 65, 69, 82, 73, 65, 204, 65,
-    69, 82, 128, 65, 69, 76, 65, 45, 80, 73, 76, 76, 65, 128, 65, 69, 76,
-    128, 65, 69, 75, 128, 65, 69, 71, 69, 65, 206, 65, 69, 71, 128, 65, 69,
-    69, 89, 65, 78, 78, 65, 128, 65, 69, 69, 128, 65, 69, 68, 65, 45, 80, 73,
-    76, 76, 65, 128, 65, 69, 68, 128, 65, 69, 66, 128, 65, 68, 86, 65, 78,
-    84, 65, 71, 69, 128, 65, 68, 86, 65, 78, 67, 69, 128, 65, 68, 85, 76, 84,
-    128, 65, 68, 77, 73, 83, 83, 73, 79, 206, 65, 68, 77, 69, 84, 79, 83,
-    128, 65, 68, 76, 65, 205, 65, 68, 72, 69, 83, 73, 86, 197, 65, 68, 69,
-    71, 128, 65, 68, 69, 199, 65, 68, 68, 82, 69, 83, 83, 69, 196, 65, 68,
-    68, 82, 69, 83, 211, 65, 68, 68, 65, 75, 128, 65, 68, 65, 203, 65, 67,
-    85, 84, 69, 45, 77, 65, 67, 82, 79, 78, 128, 65, 67, 85, 84, 69, 45, 71,
-    82, 65, 86, 69, 45, 65, 67, 85, 84, 69, 128, 65, 67, 85, 84, 197, 65, 67,
-    84, 85, 65, 76, 76, 217, 65, 67, 84, 73, 86, 65, 84, 197, 65, 67, 82, 79,
-    80, 72, 79, 78, 73, 195, 65, 67, 75, 78, 79, 87, 76, 69, 68, 71, 69, 128,
-    65, 67, 67, 85, 77, 85, 76, 65, 84, 73, 79, 78, 128, 65, 67, 67, 79, 85,
-    78, 212, 65, 67, 67, 79, 82, 68, 73, 79, 78, 128, 65, 67, 67, 79, 77, 77,
-    79, 68, 65, 84, 73, 79, 78, 128, 65, 67, 67, 69, 80, 84, 128, 65, 67, 67,
-    69, 78, 84, 45, 83, 84, 65, 67, 67, 65, 84, 79, 128, 65, 67, 67, 69, 78,
-    84, 128, 65, 67, 67, 69, 78, 212, 65, 67, 65, 68, 69, 77, 217, 65, 66,
-    89, 83, 77, 65, 204, 65, 66, 85, 78, 68, 65, 78, 67, 69, 128, 65, 66, 75,
-    72, 65, 83, 73, 65, 206, 65, 66, 66, 82, 69, 86, 73, 65, 84, 73, 79, 206,
-    65, 66, 65, 70, 73, 76, 73, 128, 65, 66, 65, 67, 85, 83, 128, 65, 66,
-    178, 65, 66, 49, 57, 49, 128, 65, 66, 49, 56, 56, 128, 65, 66, 49, 56,
-    48, 128, 65, 66, 49, 55, 49, 128, 65, 66, 49, 54, 52, 128, 65, 66, 49,
-    51, 49, 66, 128, 65, 66, 49, 51, 49, 65, 128, 65, 66, 49, 50, 51, 128,
-    65, 66, 49, 50, 50, 128, 65, 66, 49, 50, 48, 128, 65, 66, 49, 49, 56,
-    128, 65, 66, 48, 56, 55, 128, 65, 66, 48, 56, 54, 128, 65, 66, 48, 56,
-    53, 128, 65, 66, 48, 56, 50, 128, 65, 66, 48, 56, 49, 128, 65, 66, 48,
-    56, 48, 128, 65, 66, 48, 55, 57, 128, 65, 66, 48, 55, 56, 128, 65, 66,
-    48, 55, 55, 128, 65, 66, 48, 55, 54, 128, 65, 66, 48, 55, 52, 128, 65,
-    66, 48, 55, 51, 128, 65, 66, 48, 55, 48, 128, 65, 66, 48, 54, 57, 128,
-    65, 66, 48, 54, 55, 128, 65, 66, 48, 54, 54, 128, 65, 66, 48, 54, 53,
-    128, 65, 66, 48, 54, 49, 128, 65, 66, 48, 54, 48, 128, 65, 66, 48, 53,
-    57, 128, 65, 66, 48, 53, 56, 128, 65, 66, 48, 53, 55, 128, 65, 66, 48,
-    53, 54, 128, 65, 66, 48, 53, 53, 128, 65, 66, 48, 53, 52, 128, 65, 66,
-    48, 53, 51, 128, 65, 66, 48, 53, 49, 128, 65, 66, 48, 53, 48, 128, 65,
-    66, 48, 52, 57, 128, 65, 66, 48, 52, 56, 128, 65, 66, 48, 52, 55, 128,
-    65, 66, 48, 52, 54, 128, 65, 66, 48, 52, 53, 128, 65, 66, 48, 52, 52,
-    128, 65, 66, 48, 52, 49, 128, 65, 66, 48, 52, 48, 128, 65, 66, 48, 51,
-    57, 128, 65, 66, 48, 51, 56, 128, 65, 66, 48, 51, 55, 128, 65, 66, 48,
-    51, 52, 128, 65, 66, 48, 51, 49, 128, 65, 66, 48, 51, 48, 128, 65, 66,
-    48, 50, 57, 128, 65, 66, 48, 50, 56, 128, 65, 66, 48, 50, 55, 128, 65,
-    66, 48, 50, 54, 128, 65, 66, 48, 50, 52, 128, 65, 66, 48, 50, 51, 77,
-    128, 65, 66, 48, 50, 51, 128, 65, 66, 48, 50, 50, 77, 128, 65, 66, 48,
-    50, 50, 70, 128, 65, 66, 48, 50, 50, 128, 65, 66, 48, 50, 49, 77, 128,
-    65, 66, 48, 50, 49, 70, 128, 65, 66, 48, 50, 49, 128, 65, 66, 48, 50, 48,
-    128, 65, 66, 48, 49, 55, 128, 65, 66, 48, 49, 54, 128, 65, 66, 48, 49,
-    51, 128, 65, 66, 48, 49, 49, 128, 65, 66, 48, 49, 48, 128, 65, 66, 48,
-    48, 57, 128, 65, 66, 48, 48, 56, 128, 65, 66, 48, 48, 55, 128, 65, 66,
-    48, 48, 54, 128, 65, 66, 48, 48, 53, 128, 65, 66, 48, 48, 52, 128, 65,
-    66, 48, 48, 51, 128, 65, 66, 48, 48, 50, 128, 65, 66, 48, 48, 49, 128,
-    65, 65, 90, 72, 65, 65, 75, 75, 85, 128, 65, 65, 89, 73, 78, 128, 65, 65,
-    89, 65, 78, 78, 65, 128, 65, 65, 89, 128, 65, 65, 87, 128, 65, 65, 79,
-    128, 65, 65, 74, 128, 65, 65, 66, 65, 65, 70, 73, 76, 73, 128, 65, 65,
-    48, 51, 50, 128, 65, 65, 48, 51, 49, 128, 65, 65, 48, 51, 48, 128, 65,
-    65, 48, 50, 57, 128, 65, 65, 48, 50, 56, 128, 65, 65, 48, 50, 55, 128,
-    65, 65, 48, 50, 54, 128, 65, 65, 48, 50, 53, 128, 65, 65, 48, 50, 52,
-    128, 65, 65, 48, 50, 51, 128, 65, 65, 48, 50, 50, 128, 65, 65, 48, 50,
-    49, 128, 65, 65, 48, 50, 48, 128, 65, 65, 48, 49, 57, 128, 65, 65, 48,
-    49, 56, 128, 65, 65, 48, 49, 55, 128, 65, 65, 48, 49, 54, 128, 65, 65,
-    48, 49, 53, 128, 65, 65, 48, 49, 52, 128, 65, 65, 48, 49, 51, 128, 65,
-    65, 48, 49, 50, 128, 65, 65, 48, 49, 49, 128, 65, 65, 48, 49, 48, 128,
-    65, 65, 48, 48, 57, 128, 65, 65, 48, 48, 56, 128, 65, 65, 48, 48, 55, 66,
-    128, 65, 65, 48, 48, 55, 65, 128, 65, 65, 48, 48, 55, 128, 65, 65, 48,
-    48, 54, 128, 65, 65, 48, 48, 53, 128, 65, 65, 48, 48, 52, 128, 65, 65,
-    48, 48, 51, 128, 65, 65, 48, 48, 50, 128, 65, 65, 48, 48, 49, 128, 65,
-    56, 48, 55, 128, 65, 56, 48, 54, 128, 65, 56, 48, 53, 128, 65, 56, 48,
-    52, 128, 65, 56, 48, 51, 128, 65, 56, 48, 50, 128, 65, 56, 48, 49, 128,
-    65, 56, 48, 48, 128, 65, 55, 51, 178, 65, 55, 50, 182, 65, 55, 49, 183,
-    65, 55, 49, 181, 65, 55, 49, 180, 65, 55, 49, 179, 65, 55, 49, 178, 65,
-    55, 49, 177, 65, 55, 49, 176, 65, 55, 48, 57, 45, 182, 65, 55, 48, 57,
-    45, 180, 65, 55, 48, 57, 45, 179, 65, 55, 48, 57, 45, 178, 65, 55, 48,
-    185, 65, 55, 48, 184, 65, 55, 48, 183, 65, 55, 48, 182, 65, 55, 48, 181,
-    65, 55, 48, 180, 65, 55, 48, 179, 65, 55, 48, 178, 65, 55, 48, 177, 65,
-    54, 54, 52, 128, 65, 54, 54, 51, 128, 65, 54, 54, 50, 128, 65, 54, 54,
-    49, 128, 65, 54, 54, 48, 128, 65, 54, 53, 57, 128, 65, 54, 53, 56, 128,
-    65, 54, 53, 55, 128, 65, 54, 53, 54, 128, 65, 54, 53, 53, 128, 65, 54,
-    53, 52, 128, 65, 54, 53, 51, 128, 65, 54, 53, 50, 128, 65, 54, 53, 49,
-    128, 65, 54, 52, 57, 128, 65, 54, 52, 56, 128, 65, 54, 52, 54, 128, 65,
-    54, 52, 53, 128, 65, 54, 52, 52, 128, 65, 54, 52, 51, 128, 65, 54, 52,
-    50, 128, 65, 54, 52, 48, 128, 65, 54, 51, 56, 128, 65, 54, 51, 55, 128,
-    65, 54, 51, 52, 128, 65, 54, 50, 57, 128, 65, 54, 50, 56, 128, 65, 54,
-    50, 55, 128, 65, 54, 50, 54, 128, 65, 54, 50, 52, 128, 65, 54, 50, 51,
-    128, 65, 54, 50, 50, 128, 65, 54, 50, 49, 128, 65, 54, 50, 48, 128, 65,
-    54, 49, 57, 128, 65, 54, 49, 56, 128, 65, 54, 49, 55, 128, 65, 54, 49,
-    54, 128, 65, 54, 49, 53, 128, 65, 54, 49, 52, 128, 65, 54, 49, 51, 128,
-    65, 54, 49, 50, 128, 65, 54, 49, 49, 128, 65, 54, 49, 48, 128, 65, 54,
-    48, 57, 128, 65, 54, 48, 56, 128, 65, 54, 48, 54, 128, 65, 54, 48, 52,
-    128, 65, 54, 48, 51, 128, 65, 54, 48, 50, 128, 65, 54, 48, 49, 128, 65,
-    54, 48, 48, 128, 65, 53, 57, 56, 128, 65, 53, 57, 54, 128, 65, 53, 57,
-    53, 128, 65, 53, 57, 52, 128, 65, 53, 57, 50, 128, 65, 53, 57, 49, 128,
-    65, 53, 56, 57, 128, 65, 53, 56, 56, 128, 65, 53, 56, 55, 128, 65, 53,
-    56, 54, 128, 65, 53, 56, 53, 128, 65, 53, 56, 52, 128, 65, 53, 56, 51,
-    128, 65, 53, 56, 50, 128, 65, 53, 56, 49, 128, 65, 53, 56, 48, 128, 65,
-    53, 55, 57, 128, 65, 53, 55, 56, 128, 65, 53, 55, 55, 128, 65, 53, 55,
-    54, 128, 65, 53, 55, 53, 128, 65, 53, 55, 52, 128, 65, 53, 55, 51, 128,
-    65, 53, 55, 50, 128, 65, 53, 55, 49, 128, 65, 53, 55, 48, 128, 65, 53,
-    54, 57, 128, 65, 53, 54, 56, 128, 65, 53, 54, 54, 128, 65, 53, 54, 53,
-    128, 65, 53, 54, 52, 128, 65, 53, 54, 51, 128, 65, 53, 53, 57, 128, 65,
-    53, 53, 55, 128, 65, 53, 53, 54, 128, 65, 53, 53, 53, 128, 65, 53, 53,
-    52, 128, 65, 53, 53, 51, 128, 65, 53, 53, 50, 128, 65, 53, 53, 49, 128,
-    65, 53, 53, 48, 128, 65, 53, 52, 57, 128, 65, 53, 52, 56, 128, 65, 53,
-    52, 55, 128, 65, 53, 52, 53, 128, 65, 53, 52, 50, 128, 65, 53, 52, 49,
-    128, 65, 53, 52, 48, 128, 65, 53, 51, 57, 128, 65, 53, 51, 56, 128, 65,
-    53, 51, 55, 128, 65, 53, 51, 54, 128, 65, 53, 51, 53, 128, 65, 53, 51,
-    52, 128, 65, 53, 51, 50, 128, 65, 53, 51, 49, 128, 65, 53, 51, 48, 128,
-    65, 53, 50, 57, 128, 65, 53, 50, 56, 128, 65, 53, 50, 55, 128, 65, 53,
-    50, 54, 128, 65, 53, 50, 53, 128, 65, 53, 50, 52, 128, 65, 53, 50, 51,
-    128, 65, 53, 50, 50, 128, 65, 53, 50, 49, 128, 65, 53, 50, 48, 128, 65,
-    53, 49, 57, 128, 65, 53, 49, 56, 128, 65, 53, 49, 55, 128, 65, 53, 49,
-    54, 128, 65, 53, 49, 53, 128, 65, 53, 49, 52, 128, 65, 53, 49, 51, 128,
-    65, 53, 49, 50, 128, 65, 53, 49, 49, 128, 65, 53, 49, 48, 128, 65, 53,
-    48, 57, 128, 65, 53, 48, 56, 128, 65, 53, 48, 55, 128, 65, 53, 48, 54,
-    128, 65, 53, 48, 53, 128, 65, 53, 48, 52, 128, 65, 53, 48, 51, 128, 65,
-    53, 48, 50, 128, 65, 53, 48, 49, 128, 65, 52, 57, 55, 128, 65, 52, 57,
-    54, 128, 65, 52, 57, 53, 128, 65, 52, 57, 52, 128, 65, 52, 57, 51, 128,
-    65, 52, 57, 50, 128, 65, 52, 57, 49, 128, 65, 52, 57, 48, 128, 65, 52,
-    56, 57, 128, 65, 52, 56, 56, 128, 65, 52, 56, 55, 128, 65, 52, 56, 54,
-    128, 65, 52, 56, 53, 128, 65, 52, 56, 52, 128, 65, 52, 56, 51, 128, 65,
-    52, 56, 50, 128, 65, 52, 56, 49, 128, 65, 52, 56, 48, 128, 65, 52, 55,
-    57, 128, 65, 52, 55, 56, 128, 65, 52, 55, 55, 128, 65, 52, 55, 54, 128,
-    65, 52, 55, 53, 128, 65, 52, 55, 52, 128, 65, 52, 55, 51, 128, 65, 52,
-    55, 50, 128, 65, 52, 55, 49, 128, 65, 52, 55, 48, 128, 65, 52, 54, 57,
-    128, 65, 52, 54, 56, 128, 65, 52, 54, 55, 128, 65, 52, 54, 54, 128, 65,
-    52, 54, 53, 128, 65, 52, 54, 52, 128, 65, 52, 54, 51, 128, 65, 52, 54,
-    50, 128, 65, 52, 54, 49, 128, 65, 52, 54, 48, 128, 65, 52, 53, 57, 128,
-    65, 52, 53, 56, 128, 65, 52, 53, 55, 65, 128, 65, 52, 53, 55, 128, 65,
-    52, 53, 54, 128, 65, 52, 53, 53, 128, 65, 52, 53, 52, 128, 65, 52, 53,
-    51, 128, 65, 52, 53, 50, 128, 65, 52, 53, 49, 128, 65, 52, 53, 48, 65,
-    128, 65, 52, 53, 48, 128, 65, 52, 52, 57, 128, 65, 52, 52, 56, 128, 65,
-    52, 52, 55, 128, 65, 52, 52, 54, 128, 65, 52, 52, 53, 128, 65, 52, 52,
-    52, 128, 65, 52, 52, 51, 128, 65, 52, 52, 50, 128, 65, 52, 52, 49, 128,
-    65, 52, 52, 48, 128, 65, 52, 51, 57, 128, 65, 52, 51, 56, 128, 65, 52,
-    51, 55, 128, 65, 52, 51, 54, 128, 65, 52, 51, 53, 128, 65, 52, 51, 52,
-    128, 65, 52, 51, 51, 128, 65, 52, 51, 50, 128, 65, 52, 51, 49, 128, 65,
-    52, 51, 48, 128, 65, 52, 50, 57, 128, 65, 52, 50, 56, 128, 65, 52, 50,
-    55, 128, 65, 52, 50, 54, 128, 65, 52, 50, 53, 128, 65, 52, 50, 52, 128,
-    65, 52, 50, 51, 128, 65, 52, 50, 50, 128, 65, 52, 50, 49, 128, 65, 52,
-    50, 48, 128, 65, 52, 49, 57, 128, 65, 52, 49, 56, 45, 86, 65, 83, 128,
-    65, 52, 49, 56, 128, 65, 52, 49, 55, 45, 86, 65, 83, 128, 65, 52, 49, 55,
-    128, 65, 52, 49, 54, 45, 86, 65, 83, 128, 65, 52, 49, 54, 128, 65, 52,
-    49, 53, 45, 86, 65, 83, 128, 65, 52, 49, 53, 128, 65, 52, 49, 52, 45, 86,
-    65, 83, 128, 65, 52, 49, 52, 128, 65, 52, 49, 51, 45, 86, 65, 83, 128,
-    65, 52, 49, 51, 128, 65, 52, 49, 50, 45, 86, 65, 83, 128, 65, 52, 49, 50,
-    128, 65, 52, 49, 49, 45, 86, 65, 83, 128, 65, 52, 49, 49, 128, 65, 52,
-    49, 48, 193, 65, 52, 49, 48, 45, 86, 65, 83, 128, 65, 52, 49, 176, 65,
-    52, 48, 57, 45, 86, 65, 83, 128, 65, 52, 48, 57, 128, 65, 52, 48, 56, 45,
-    86, 65, 83, 128, 65, 52, 48, 56, 128, 65, 52, 48, 55, 45, 86, 65, 83,
-    128, 65, 52, 48, 55, 128, 65, 52, 48, 54, 45, 86, 65, 83, 128, 65, 52,
-    48, 54, 128, 65, 52, 48, 53, 45, 86, 65, 83, 128, 65, 52, 48, 53, 128,
-    65, 52, 48, 52, 45, 86, 65, 83, 128, 65, 52, 48, 52, 128, 65, 52, 48, 51,
-    45, 86, 65, 83, 128, 65, 52, 48, 51, 128, 65, 52, 48, 50, 45, 86, 65, 83,
-    128, 65, 52, 48, 50, 128, 65, 52, 48, 49, 45, 86, 65, 83, 128, 65, 52,
-    48, 49, 128, 65, 52, 48, 48, 45, 86, 65, 83, 128, 65, 52, 48, 48, 128,
-    65, 51, 57, 57, 128, 65, 51, 57, 56, 128, 65, 51, 57, 55, 128, 65, 51,
-    57, 54, 128, 65, 51, 57, 53, 128, 65, 51, 57, 52, 128, 65, 51, 57, 179,
-    65, 51, 57, 50, 128, 65, 51, 57, 49, 128, 65, 51, 57, 48, 128, 65, 51,
-    56, 57, 128, 65, 51, 56, 56, 128, 65, 51, 56, 55, 128, 65, 51, 56, 54,
-    65, 128, 65, 51, 56, 54, 128, 65, 51, 56, 53, 128, 65, 51, 56, 52, 128,
-    65, 51, 56, 51, 65, 128, 65, 51, 56, 179, 65, 51, 56, 50, 128, 65, 51,
-    56, 49, 65, 128, 65, 51, 56, 49, 128, 65, 51, 56, 48, 128, 65, 51, 55,
-    57, 128, 65, 51, 55, 56, 128, 65, 51, 55, 55, 128, 65, 51, 55, 54, 128,
-    65, 51, 55, 53, 128, 65, 51, 55, 52, 128, 65, 51, 55, 51, 128, 65, 51,
-    55, 50, 128, 65, 51, 55, 49, 65, 128, 65, 51, 55, 49, 128, 65, 51, 55,
-    48, 128, 65, 51, 54, 57, 128, 65, 51, 54, 56, 65, 128, 65, 51, 54, 56,
-    128, 65, 51, 54, 55, 128, 65, 51, 54, 54, 128, 65, 51, 54, 53, 128, 65,
-    51, 54, 52, 65, 128, 65, 51, 54, 52, 128, 65, 51, 54, 51, 128, 65, 51,
-    54, 50, 128, 65, 51, 54, 49, 128, 65, 51, 54, 48, 128, 65, 51, 53, 57,
-    65, 128, 65, 51, 53, 57, 128, 65, 51, 53, 56, 128, 65, 51, 53, 55, 128,
-    65, 51, 53, 54, 128, 65, 51, 53, 53, 128, 65, 51, 53, 52, 128, 65, 51,
-    53, 51, 128, 65, 51, 53, 50, 128, 65, 51, 53, 49, 128, 65, 51, 53, 48,
-    128, 65, 51, 52, 57, 128, 65, 51, 52, 56, 128, 65, 51, 52, 55, 128, 65,
-    51, 52, 54, 128, 65, 51, 52, 53, 128, 65, 51, 52, 52, 128, 65, 51, 52,
-    51, 128, 65, 51, 52, 50, 128, 65, 51, 52, 49, 128, 65, 51, 52, 48, 128,
-    65, 51, 51, 57, 128, 65, 51, 51, 56, 128, 65, 51, 51, 55, 128, 65, 51,
-    51, 54, 67, 128, 65, 51, 51, 54, 66, 128, 65, 51, 51, 54, 65, 128, 65,
-    51, 51, 54, 128, 65, 51, 51, 53, 128, 65, 51, 51, 52, 128, 65, 51, 51,
-    51, 128, 65, 51, 51, 50, 67, 128, 65, 51, 51, 50, 66, 128, 65, 51, 51,
-    50, 65, 128, 65, 51, 51, 50, 128, 65, 51, 51, 49, 128, 65, 51, 51, 48,
-    128, 65, 51, 50, 57, 65, 128, 65, 51, 50, 57, 128, 65, 51, 50, 56, 128,
-    65, 51, 50, 55, 128, 65, 51, 50, 54, 128, 65, 51, 50, 53, 128, 65, 51,
-    50, 52, 128, 65, 51, 50, 51, 128, 65, 51, 50, 50, 128, 65, 51, 50, 49,
-    128, 65, 51, 50, 48, 128, 65, 51, 49, 57, 128, 65, 51, 49, 56, 128, 65,
-    51, 49, 55, 128, 65, 51, 49, 54, 128, 65, 51, 49, 53, 128, 65, 51, 49,
-    52, 128, 65, 51, 49, 51, 67, 128, 65, 51, 49, 51, 66, 128, 65, 51, 49,
-    51, 65, 128, 65, 51, 49, 51, 128, 65, 51, 49, 50, 128, 65, 51, 49, 49,
-    128, 65, 51, 49, 48, 128, 65, 51, 48, 57, 67, 128, 65, 51, 48, 57, 66,
-    128, 65, 51, 48, 57, 65, 128, 65, 51, 48, 57, 128, 65, 51, 48, 56, 128,
-    65, 51, 48, 55, 128, 65, 51, 48, 54, 128, 65, 51, 48, 53, 128, 65, 51,
-    48, 52, 128, 65, 51, 48, 51, 128, 65, 51, 48, 50, 128, 65, 51, 48, 49,
-    128, 65, 51, 48, 48, 128, 65, 50, 57, 57, 65, 128, 65, 50, 57, 57, 128,
-    65, 50, 57, 56, 128, 65, 50, 57, 55, 128, 65, 50, 57, 54, 128, 65, 50,
-    57, 53, 128, 65, 50, 57, 52, 65, 128, 65, 50, 57, 52, 128, 65, 50, 57,
-    51, 128, 65, 50, 57, 50, 128, 65, 50, 57, 49, 128, 65, 50, 57, 48, 128,
-    65, 50, 56, 57, 65, 128, 65, 50, 56, 57, 128, 65, 50, 56, 56, 128, 65,
-    50, 56, 55, 128, 65, 50, 56, 54, 128, 65, 50, 56, 53, 128, 65, 50, 56,
-    52, 128, 65, 50, 56, 51, 128, 65, 50, 56, 50, 128, 65, 50, 56, 49, 128,
-    65, 50, 56, 48, 128, 65, 50, 55, 57, 128, 65, 50, 55, 56, 128, 65, 50,
-    55, 55, 128, 65, 50, 55, 54, 128, 65, 50, 55, 53, 128, 65, 50, 55, 52,
-    128, 65, 50, 55, 51, 128, 65, 50, 55, 50, 128, 65, 50, 55, 49, 128, 65,
-    50, 55, 48, 128, 65, 50, 54, 57, 128, 65, 50, 54, 56, 128, 65, 50, 54,
-    55, 65, 128, 65, 50, 54, 55, 128, 65, 50, 54, 54, 128, 65, 50, 54, 53,
-    128, 65, 50, 54, 52, 128, 65, 50, 54, 51, 128, 65, 50, 54, 50, 128, 65,
-    50, 54, 49, 128, 65, 50, 54, 48, 128, 65, 50, 53, 57, 128, 65, 50, 53,
-    56, 128, 65, 50, 53, 55, 128, 65, 50, 53, 54, 128, 65, 50, 53, 53, 128,
-    65, 50, 53, 52, 128, 65, 50, 53, 51, 128, 65, 50, 53, 50, 128, 65, 50,
-    53, 49, 128, 65, 50, 53, 48, 128, 65, 50, 52, 57, 128, 65, 50, 52, 56,
-    128, 65, 50, 52, 55, 128, 65, 50, 52, 54, 128, 65, 50, 52, 53, 128, 65,
-    50, 52, 52, 128, 65, 50, 52, 51, 128, 65, 50, 52, 50, 128, 65, 50, 52,
-    49, 128, 65, 50, 52, 48, 128, 65, 50, 51, 57, 128, 65, 50, 51, 56, 128,
-    65, 50, 51, 55, 128, 65, 50, 51, 54, 128, 65, 50, 51, 53, 128, 65, 50,
-    51, 52, 128, 65, 50, 51, 51, 128, 65, 50, 51, 50, 128, 65, 50, 51, 49,
-    128, 65, 50, 51, 48, 128, 65, 50, 50, 57, 128, 65, 50, 50, 56, 128, 65,
-    50, 50, 55, 65, 128, 65, 50, 50, 55, 128, 65, 50, 50, 54, 128, 65, 50,
-    50, 53, 128, 65, 50, 50, 52, 128, 65, 50, 50, 51, 128, 65, 50, 50, 50,
-    128, 65, 50, 50, 49, 128, 65, 50, 50, 48, 128, 65, 50, 49, 57, 128, 65,
-    50, 49, 56, 128, 65, 50, 49, 55, 128, 65, 50, 49, 54, 65, 128, 65, 50,
-    49, 54, 128, 65, 50, 49, 53, 65, 128, 65, 50, 49, 53, 128, 65, 50, 49,
-    52, 128, 65, 50, 49, 51, 128, 65, 50, 49, 50, 128, 65, 50, 49, 49, 128,
-    65, 50, 49, 48, 128, 65, 50, 48, 57, 65, 128, 65, 50, 48, 57, 128, 65,
-    50, 48, 56, 128, 65, 50, 48, 55, 65, 128, 65, 50, 48, 55, 128, 65, 50,
-    48, 54, 128, 65, 50, 48, 53, 128, 65, 50, 48, 52, 128, 65, 50, 48, 51,
-    128, 65, 50, 48, 50, 66, 128, 65, 50, 48, 50, 65, 128, 65, 50, 48, 50,
-    128, 65, 50, 48, 49, 128, 65, 50, 48, 48, 128, 65, 49, 57, 57, 128, 65,
-    49, 57, 56, 128, 65, 49, 57, 55, 128, 65, 49, 57, 54, 128, 65, 49, 57,
-    53, 128, 65, 49, 57, 52, 128, 65, 49, 57, 51, 128, 65, 49, 57, 50, 128,
-    65, 49, 57, 49, 128, 65, 49, 57, 48, 128, 65, 49, 56, 57, 128, 65, 49,
-    56, 56, 128, 65, 49, 56, 55, 128, 65, 49, 56, 54, 128, 65, 49, 56, 53,
-    128, 65, 49, 56, 52, 128, 65, 49, 56, 51, 128, 65, 49, 56, 50, 128, 65,
-    49, 56, 49, 128, 65, 49, 56, 48, 128, 65, 49, 55, 57, 128, 65, 49, 55,
-    56, 128, 65, 49, 55, 55, 128, 65, 49, 55, 54, 128, 65, 49, 55, 53, 128,
-    65, 49, 55, 52, 128, 65, 49, 55, 51, 128, 65, 49, 55, 50, 128, 65, 49,
-    55, 49, 128, 65, 49, 55, 48, 128, 65, 49, 54, 57, 128, 65, 49, 54, 56,
-    128, 65, 49, 54, 55, 128, 65, 49, 54, 54, 128, 65, 49, 54, 53, 128, 65,
-    49, 54, 52, 128, 65, 49, 54, 51, 128, 65, 49, 54, 50, 128, 65, 49, 54,
-    49, 128, 65, 49, 54, 48, 128, 65, 49, 53, 57, 128, 65, 49, 53, 56, 128,
-    65, 49, 53, 55, 128, 65, 49, 53, 54, 128, 65, 49, 53, 53, 128, 65, 49,
-    53, 52, 128, 65, 49, 53, 51, 128, 65, 49, 53, 50, 128, 65, 49, 53, 49,
-    128, 65, 49, 53, 48, 128, 65, 49, 52, 57, 128, 65, 49, 52, 56, 128, 65,
-    49, 52, 55, 128, 65, 49, 52, 54, 128, 65, 49, 52, 53, 128, 65, 49, 52,
-    52, 128, 65, 49, 52, 51, 128, 65, 49, 52, 50, 128, 65, 49, 52, 49, 128,
-    65, 49, 52, 48, 128, 65, 49, 51, 57, 128, 65, 49, 51, 56, 128, 65, 49,
-    51, 55, 128, 65, 49, 51, 54, 128, 65, 49, 51, 53, 65, 128, 65, 49, 51,
-    53, 128, 65, 49, 51, 52, 128, 65, 49, 51, 51, 128, 65, 49, 51, 50, 128,
-    65, 49, 51, 49, 67, 128, 65, 49, 51, 49, 128, 65, 49, 51, 48, 128, 65,
-    49, 50, 57, 128, 65, 49, 50, 56, 128, 65, 49, 50, 55, 128, 65, 49, 50,
-    54, 128, 65, 49, 50, 53, 65, 128, 65, 49, 50, 53, 128, 65, 49, 50, 52,
-    128, 65, 49, 50, 51, 128, 65, 49, 50, 50, 128, 65, 49, 50, 49, 128, 65,
-    49, 50, 48, 66, 128, 65, 49, 50, 48, 128, 65, 49, 49, 57, 128, 65, 49,
-    49, 56, 128, 65, 49, 49, 55, 128, 65, 49, 49, 54, 128, 65, 49, 49, 53,
-    65, 128, 65, 49, 49, 53, 128, 65, 49, 49, 52, 128, 65, 49, 49, 51, 128,
-    65, 49, 49, 50, 128, 65, 49, 49, 49, 128, 65, 49, 49, 48, 66, 128, 65,
-    49, 49, 48, 65, 128, 65, 49, 49, 48, 128, 65, 49, 48, 57, 128, 65, 49,
-    48, 56, 128, 65, 49, 48, 55, 67, 128, 65, 49, 48, 55, 66, 128, 65, 49,
-    48, 55, 65, 128, 65, 49, 48, 55, 128, 65, 49, 48, 54, 128, 65, 49, 48,
-    53, 66, 128, 65, 49, 48, 53, 65, 128, 65, 49, 48, 53, 128, 65, 49, 48,
-    52, 67, 128, 65, 49, 48, 52, 66, 128, 65, 49, 48, 52, 65, 128, 65, 49,
-    48, 52, 128, 65, 49, 48, 51, 128, 65, 49, 48, 50, 65, 128, 65, 49, 48,
-    50, 128, 65, 49, 48, 49, 65, 128, 65, 49, 48, 49, 128, 65, 49, 48, 48,
-    65, 128, 65, 49, 48, 48, 45, 49, 48, 50, 128, 65, 49, 48, 48, 128, 65,
-    48, 57, 57, 128, 65, 48, 57, 56, 65, 128, 65, 48, 57, 56, 128, 65, 48,
-    57, 55, 65, 128, 65, 48, 57, 55, 128, 65, 48, 57, 54, 128, 65, 48, 57,
-    53, 128, 65, 48, 57, 52, 128, 65, 48, 57, 51, 128, 65, 48, 57, 50, 128,
-    65, 48, 57, 49, 128, 65, 48, 57, 48, 128, 65, 48, 56, 57, 128, 65, 48,
-    56, 56, 128, 65, 48, 56, 55, 128, 65, 48, 56, 54, 128, 65, 48, 56, 53,
-    128, 65, 48, 56, 52, 128, 65, 48, 56, 51, 128, 65, 48, 56, 50, 128, 65,
-    48, 56, 49, 128, 65, 48, 56, 48, 128, 65, 48, 55, 57, 128, 65, 48, 55,
-    56, 128, 65, 48, 55, 55, 128, 65, 48, 55, 54, 128, 65, 48, 55, 53, 128,
-    65, 48, 55, 52, 128, 65, 48, 55, 51, 128, 65, 48, 55, 50, 128, 65, 48,
-    55, 49, 128, 65, 48, 55, 48, 128, 65, 48, 54, 57, 128, 65, 48, 54, 56,
-    128, 65, 48, 54, 55, 128, 65, 48, 54, 54, 67, 128, 65, 48, 54, 54, 66,
-    128, 65, 48, 54, 54, 65, 128, 65, 48, 54, 54, 128, 65, 48, 54, 53, 128,
-    65, 48, 54, 52, 128, 65, 48, 54, 51, 128, 65, 48, 54, 50, 128, 65, 48,
-    54, 49, 128, 65, 48, 54, 48, 128, 65, 48, 53, 57, 128, 65, 48, 53, 56,
-    128, 65, 48, 53, 55, 128, 65, 48, 53, 54, 128, 65, 48, 53, 53, 128, 65,
-    48, 53, 52, 128, 65, 48, 53, 51, 128, 65, 48, 53, 50, 128, 65, 48, 53,
-    49, 128, 65, 48, 53, 48, 128, 65, 48, 52, 57, 128, 65, 48, 52, 56, 128,
-    65, 48, 52, 55, 128, 65, 48, 52, 54, 66, 128, 65, 48, 52, 54, 65, 128,
-    65, 48, 52, 54, 128, 65, 48, 52, 53, 65, 128, 65, 48, 52, 53, 128, 65,
-    48, 52, 52, 128, 65, 48, 52, 51, 65, 128, 65, 48, 52, 51, 128, 65, 48,
-    52, 50, 65, 128, 65, 48, 52, 50, 128, 65, 48, 52, 49, 65, 128, 65, 48,
-    52, 49, 128, 65, 48, 52, 48, 65, 128, 65, 48, 52, 48, 128, 65, 48, 51,
-    57, 65, 128, 65, 48, 51, 57, 128, 65, 48, 51, 56, 128, 65, 48, 51, 55,
-    128, 65, 48, 51, 54, 128, 65, 48, 51, 53, 128, 65, 48, 51, 52, 128, 65,
-    48, 51, 51, 128, 65, 48, 51, 50, 65, 128, 65, 48, 50, 56, 66, 128, 65,
-    48, 50, 54, 65, 128, 65, 48, 49, 55, 65, 128, 65, 48, 49, 52, 65, 128,
-    65, 48, 49, 48, 65, 128, 65, 48, 48, 54, 66, 128, 65, 48, 48, 54, 65,
-    128, 65, 48, 48, 53, 65, 128, 65, 45, 87, 79, 128, 65, 45, 69, 85, 128,
-    45, 85, 205, 45, 80, 72, 82, 85, 128, 45, 75, 72, 89, 85, 196, 45, 75,
-    72, 89, 73, 76, 128, 45, 68, 90, 85, 196, 45, 67, 72, 65, 210, 45, 67,
-    72, 65, 76, 128,
-};
-
-static const unsigned int lexicon_offset[] = {
-    0, 0, 6, 11, 15, 19, 27, 34, 44, 49, 55, 64, 66, 69, 81, 89, 102, 108,
-    113, 118, 124, 129, 137, 146, 149, 160, 165, 170, 176, 180, 189, 195,
-    201, 207, 216, 224, 229, 237, 244, 177, 252, 255, 261, 262, 268, 273,
-    277, 282, 289, 296, 306, 311, 317, 325, 330, 333, 339, 344, 350, 356,
-    359, 365, 375, 380, 385, 390, 392, 394, 403, 405, 412, 354, 419, 427,
-    436, 438, 441, 449, 454, 455, 457, 464, 472, 478, 484, 491, 496, 503,
-    507, 512, 519, 524, 527, 531, 536, 542, 547, 557, 565, 572, 575, 585,
-    593, 598, 606, 615, 618, 625, 629, 633, 637, 642, 645, 652, 659, 666,
-    671, 676, 683, 692, 694, 703, 707, 715, 719, 727, 281, 736, 749, 753,
-    758, 761, 765, 769, 771, 776, 786, 792, 796, 802, 806, 809, 814, 823,
-    828, 832, 774, 838, 846, 854, 859, 868, 877, 885, 891, 902, 905, 910,
-    918, 925, 928, 938, 943, 949, 953, 957, 960, 967, 974, 977, 981, 984,
-    657, 990, 993, 996, 1002, 1007, 1016, 1021, 1025, 1028, 1032, 1035, 1041,
-    1046, 1050, 617, 1055, 1058, 1067, 1070, 1075, 1080, 1086, 1091, 1096,
-    1101, 1105, 1110, 1116, 1121, 1126, 1130, 1136, 1141, 1146, 1151, 1155,
-    1160, 1165, 1170, 1176, 1182, 1188, 1193, 1197, 1202, 1207, 1212, 1216,
-    1221, 1226, 1231, 1236, 1071, 1076, 1081, 1087, 1092, 1240, 1102, 1246,
-    1251, 1256, 1263, 1267, 1270, 1279, 1106, 1283, 1111, 1117, 1122, 1287,
-    1292, 1297, 1301, 1305, 1311, 1315, 1127, 1318, 1320, 1137, 1325, 1329,
-    1142, 1335, 1147, 1339, 1343, 1350, 1152, 1354, 1362, 1367, 1371, 1374,
-    1378, 1156, 1161, 1383, 1389, 1166, 1401, 1407, 1413, 1419, 1171, 1183,
-    1189, 1423, 1427, 1431, 1434, 1194, 1438, 1440, 1445, 1450, 1456, 1461,
-    1466, 1470, 1475, 1480, 1485, 1490, 1496, 1501, 1506, 1512, 1518, 1523,
-    1527, 1532, 1537, 1542, 1547, 1552, 1556, 1564, 1569, 1573, 1578, 1583,
-    1588, 1593, 1597, 1600, 1607, 1612, 1617, 1622, 1627, 1633, 1638, 1642,
-    1198, 1645, 1651, 1656, 1661, 1666, 1203, 1670, 1674, 1681, 1688, 1208,
-    1693, 1698, 1213, 1702, 1704, 1709, 1720, 1726, 1217, 1731, 1740, 1222,
-    1745, 1751, 1756, 1761, 1771, 1780, 1788, 1227, 1798, 1807, 1816, 1821,
-    1825, 1828, 1837, 1847, 1856, 1861, 1865, 1869, 1873, 1876, 1880, 1885,
-    1232, 1895, 1237, 1899, 1901, 1907, 1913, 1919, 1925, 1931, 1937, 1943,
-    1949, 1954, 1960, 1966, 1972, 1978, 1984, 1990, 1996, 2002, 2008, 2013,
-    2018, 2023, 2028, 2033, 2038, 2043, 2048, 2053, 2058, 2064, 2069, 2075,
-    2080, 2086, 2092, 2097, 2103, 2109, 2115, 2121, 2126, 2131, 2133, 2134,
-    2138, 2142, 2147, 2151, 2155, 2159, 2164, 2168, 2171, 2176, 2180, 2185,
-    2189, 2193, 2198, 2202, 2205, 2209, 2215, 2229, 2233, 2237, 2241, 2244,
-    2249, 2253, 2257, 2260, 2264, 2269, 2274, 2279, 2284, 2288, 2292, 2296,
-    2300, 2304, 2309, 2313, 2318, 2322, 2327, 2333, 2340, 2346, 2351, 2356,
-    2361, 2367, 2372, 2378, 2383, 2388, 2393, 2398, 2403, 2406, 2408, 1088,
-    2412, 2419, 2427, 2437, 2446, 2460, 2464, 2468, 2473, 2486, 2494, 2497,
-    2501, 2504, 2509, 2513, 2516, 2520, 2524, 2529, 1715, 2534, 2538, 2541,
-    2545, 2551, 2558, 2565, 2571, 2576, 2581, 2587, 2593, 2598, 2603, 2608,
-    2613, 2618, 2623, 2548, 2628, 1706, 2630, 2636, 2640, 2645, 2649, 2653,
-    1603, 1728, 2658, 2662, 2666, 2669, 2674, 2679, 2684, 2689, 2693, 2700,
-    2705, 2708, 2712, 2716, 2723, 2729, 2733, 2739, 2743, 2747, 2752, 2759,
-    2764, 2769, 2776, 2782, 2788, 2794, 2815, 2829, 2846, 2861, 2877, 2894,
-    2909, 2918, 2923, 2927, 2932, 2937, 2941, 2953, 2960, 2966, 2336, 2972,
-    2979, 2985, 2989, 2992, 2999, 3005, 3010, 3014, 3019, 3023, 3027, 2156,
-    3031, 3036, 3041, 3045, 3050, 3058, 3062, 3069, 3074, 3078, 3082, 3086,
-    3091, 3096, 3101, 3105, 3110, 3115, 3119, 3124, 3129, 3133, 3136, 3140,
-    3144, 3152, 3157, 3161, 3165, 3171, 3180, 3184, 3188, 3194, 3199, 3206,
-    3210, 3220, 3224, 3228, 3233, 3237, 3242, 3248, 3253, 3257, 3261, 3265,
-    2561, 3273, 3278, 3284, 3289, 3293, 3298, 3303, 3307, 3313, 3318, 2160,
-    3324, 3330, 3335, 3340, 3345, 3350, 3355, 3360, 3365, 3370, 3375, 3380,
-    3385, 3390, 3395, 3400, 3406, 3411, 1103, 101, 3417, 3421, 3425, 3429,
-    3434, 3438, 3442, 3448, 3453, 3457, 3461, 3466, 3471, 3475, 3480, 3484,
-    3487, 3491, 3496, 3500, 3505, 3509, 3512, 3514, 3518, 3522, 3527, 3531,
-    3534, 3547, 3551, 3555, 3559, 3564, 3568, 3572, 3575, 3579, 3583, 3588,
-    3592, 3597, 3602, 3607, 3611, 3618, 3623, 3626, 3632, 3635, 3640, 3646,
-    3650, 3654, 3657, 3662, 3666, 3671, 3675, 3679, 3682, 3688, 3693, 3698,
-    3704, 3709, 3714, 3720, 3726, 3731, 3736, 3741, 3746, 3749, 979, 644,
-    3755, 3758, 3763, 3767, 3771, 3775, 3779, 3782, 3786, 3791, 3796, 3800,
-    3805, 3809, 3814, 3818, 3822, 3826, 3832, 3838, 3841, 3844, 153, 3850,
-    3855, 3864, 3872, 3881, 3891, 3898, 3904, 3911, 3916, 3920, 3924, 3932,
-    3939, 3944, 3949, 3956, 3961, 3965, 3975, 3979, 3983, 3988, 3993, 4003,
-    2172, 4008, 4012, 4015, 4021, 4026, 4032, 4038, 4043, 4050, 4054, 4058,
-    4062, 4067, 4072, 4077, 4082, 4087, 4092, 634, 616, 1264, 4097, 4104,
-    4111, 4117, 4126, 4131, 4138, 4145, 4150, 4156, 4162, 4167, 4172, 4176,
-    4182, 4189, 4194, 4198, 4202, 2181, 4208, 4216, 4222, 4230, 863, 4236,
-    4244, 4255, 4259, 4269, 4275, 4280, 4285, 4290, 4295, 2186, 4300, 4305,
-    4320, 4326, 4333, 4344, 4354, 4360, 4365, 4371, 4377, 4380, 4383, 4387,
-    4392, 4395, 4402, 4411, 4416, 4420, 4424, 4428, 4432, 4437, 4443, 4454,
-    4458, 3492, 4463, 4475, 4481, 4489, 4493, 4498, 4505, 4510, 4515, 4520,
-    1472, 4525, 4528, 4531, 4535, 4538, 4544, 4548, 4562, 4566, 4569, 4573,
-    4579, 4585, 4590, 4594, 4598, 4604, 4615, 4621, 4626, 4632, 4636, 4644,
-    4656, 4666, 4672, 4677, 4686, 4694, 4705, 4712, 4718, 4724, 4728, 4734,
-    4743, 4752, 4757, 4763, 4767, 4776, 4782, 4787, 4791, 4796, 4800, 4808,
-    4814, 4818, 4825, 4830, 4834, 4840, 4846, 4853, 2194, 4862, 4873, 4883,
-    4892, 4897, 4902, 4907, 4912, 1280, 4917, 4919, 4924, 4930, 4935, 4940,
-    4945, 4950, 4955, 4960, 4966, 4971, 4977, 4982, 4987, 4992, 4998, 5003,
-    5008, 5013, 5018, 5024, 5029, 5035, 5040, 5045, 5050, 5055, 5060, 5065,
-    5071, 5076, 5081, 348, 389, 5086, 5092, 5095, 5099, 5103, 5110, 5116,
-    5121, 5125, 5129, 5132, 5135, 5139, 5143, 5146, 5150, 5154, 5158, 5163,
-    5167, 5171, 5177, 5186, 4843, 5191, 5195, 5198, 5203, 5208, 5213, 5218,
-    5223, 5228, 5233, 5238, 5243, 5248, 5252, 5257, 5262, 5267, 5272, 5277,
-    5282, 5287, 5292, 5297, 5302, 5306, 5311, 5316, 5321, 5326, 5331, 5336,
-    5341, 5346, 5351, 5356, 5360, 5365, 5370, 5375, 5380, 5385, 5390, 5395,
-    5400, 5405, 5410, 5414, 5419, 5424, 5429, 5434, 5439, 5444, 5449, 5454,
-    5459, 5464, 5468, 5473, 5478, 5483, 5488, 5493, 5498, 5503, 5508, 5513,
-    5518, 5522, 5527, 5532, 5537, 5542, 5547, 5552, 5557, 5562, 5567, 5572,
-    5576, 5581, 5586, 5591, 5596, 5602, 5608, 5614, 5620, 5626, 5632, 5638,
-    5643, 5649, 5655, 5661, 5667, 5673, 5679, 5685, 5691, 5697, 5703, 5708,
-    5714, 5720, 5726, 5732, 5738, 5744, 5750, 5756, 5762, 5768, 5773, 5779,
-    5785, 5791, 5797, 5803, 5809, 5815, 5821, 5827, 5833, 5838, 5844, 5850,
-    5856, 5862, 5868, 5874, 5880, 5886, 5892, 5898, 5903, 5909, 5915, 5921,
-    5927, 5933, 5939, 5945, 5951, 5957, 5963, 5968, 5972, 5978, 5984, 5990,
-    5996, 6002, 6008, 6014, 6020, 6026, 6032, 6037, 6043, 6049, 6055, 6061,
-    6067, 6073, 6079, 6085, 6091, 6097, 6102, 6108, 6114, 6120, 6126, 6132,
-    6138, 6144, 6150, 6156, 6162, 6167, 6173, 6179, 6185, 6191, 6197, 6203,
-    6209, 6215, 6221, 6227, 6232, 6238, 6244, 6250, 6256, 6262, 6268, 6274,
-    6280, 6286, 6292, 6297, 6303, 6309, 6315, 6321, 6327, 6333, 6339, 6345,
-    6351, 6357, 6362, 6368, 6374, 6380, 6386, 6392, 6398, 6404, 6410, 6416,
-    6422, 6427, 6433, 6439, 6445, 6451, 6457, 6463, 6469, 6475, 6481, 6487,
-    6492, 6498, 6504, 6510, 6516, 6522, 6528, 6534, 6540, 6546, 6552, 6557,
-    6563, 6569, 6575, 6581, 6587, 6593, 6599, 6605, 6611, 6617, 6622, 6626,
-    6629, 6637, 6644, 6647, 6651, 6664, 6668, 6672, 6676, 6679, 6683, 6688,
-    6692, 6701, 6705, 6711, 6718, 6729, 6737, 6744, 6750, 6754, 6762, 6771,
-    6777, 6781, 6793, 6798, 6801, 6806, 6810, 6820, 6828, 6836, 6844, 6850,
-    6854, 6864, 6874, 6882, 6889, 6896, 6902, 6908, 6915, 6919, 6926, 6936,
-    6946, 6954, 6961, 6966, 6970, 6974, 6982, 6986, 6996, 7001, 7008, 7015,
-    7023, 7033, 7038, 7042, 7047, 7051, 7058, 7063, 7077, 7082, 7087, 7094,
-    3768, 7103, 7107, 7111, 7116, 7120, 7124, 7127, 7132, 7137, 7146, 7152,
-    7158, 7163, 7169, 7173, 7184, 7194, 7209, 7224, 7239, 7254, 7269, 7284,
-    7299, 7314, 7329, 7344, 7359, 7374, 7389, 7404, 7419, 7434, 7449, 7464,
-    7479, 7494, 7509, 7524, 7539, 7554, 7569, 7584, 7599, 7614, 7629, 7644,
-    7659, 7674, 7689, 7704, 7719, 7734, 7749, 7764, 7779, 7794, 7809, 7824,
-    7839, 7854, 7869, 7884, 7899, 7914, 7929, 7938, 7947, 7952, 7958, 7968,
-    7972, 7976, 7981, 7986, 7991, 7999, 8003, 8006, 8010, 3215, 8013, 8018,
-    353, 534, 8024, 8027, 8035, 8039, 8043, 8046, 8050, 8056, 8060, 8068,
-    8074, 8079, 8086, 8094, 8101, 8107, 8112, 8119, 8125, 8134, 8142, 8146,
-    8151, 8159, 8171, 8182, 8189, 8200, 8204, 8208, 8212, 8215, 8221, 3519,
-    8225, 8227, 8233, 8238, 8243, 8248, 8254, 8259, 8264, 8269, 8274, 8280,
-    8285, 8290, 8296, 8301, 8307, 8312, 8318, 8323, 8329, 8334, 8339, 8344,
-    8349, 8354, 8360, 8365, 8370, 8375, 8381, 8387, 8393, 8399, 8405, 8411,
-    8417, 8423, 8429, 8435, 8441, 8447, 8452, 8457, 8462, 8467, 8472, 8477,
-    8482, 8487, 8493, 8499, 8504, 8510, 8516, 8522, 8528, 8533, 8538, 8543,
-    8548, 8554, 8560, 8565, 8570, 8575, 8580, 8585, 8591, 8596, 8602, 8608,
-    8614, 8620, 8626, 8632, 8638, 8644, 8650, 2203, 8045, 8655, 8659, 8667,
-    8671, 8674, 8677, 8683, 8690, 1107, 8693, 8697, 8705, 8710, 8715, 8706,
-    8720, 2230, 8724, 8730, 8736, 8741, 8746, 8753, 8761, 8766, 8770, 8773,
-    8777, 8783, 8789, 8793, 1653, 631, 8796, 8800, 8805, 8811, 8816, 8820,
-    8823, 8827, 8833, 8838, 8842, 8849, 8853, 8857, 8861, 773, 8681, 2254,
-    8864, 8872, 8879, 8886, 8892, 8899, 8907, 8914, 8925, 8932, 8938, 8950,
-    1123, 1288, 1293, 8961, 8965, 1298, 8969, 8973, 8982, 8990, 8994, 9003,
-    9009, 9015, 9020, 9024, 9030, 9035, 9043, 9050, 2914, 9057, 9063, 9067,
-    9076, 9085, 9094, 9103, 9109, 9114, 9119, 9130, 9139, 9151, 9156, 9164,
-    2289, 9168, 9170, 9175, 9179, 9188, 9196, 1302, 168, 3810, 3815, 9202,
-    9206, 9215, 9221, 9226, 9229, 9233, 9237, 9242, 9247, 9252, 9257, 9261,
-    9270, 9276, 2301, 9280, 2906, 9284, 9292, 9296, 9300, 2305, 9304, 9308,
-    9312, 9316, 9320, 2310, 9324, 9329, 9336, 9342, 9349, 9355, 9358, 9254,
-    9360, 9368, 9376, 9384, 9387, 9392, 2323, 9397, 8717, 9400, 9402, 9407,
-    9412, 9417, 9422, 9427, 9432, 9437, 9442, 9447, 9452, 9458, 9463, 9468,
-    9473, 9479, 9484, 9489, 9494, 9499, 9504, 9509, 9515, 9520, 9525, 9530,
-    9535, 9540, 9545, 9550, 9555, 9560, 9565, 9570, 9575, 9580, 9585, 9590,
-    9595, 9600, 9606, 9612, 9617, 9622, 9627, 9632, 9637, 2334, 2341, 2347,
-    9642, 9650, 9656, 9664, 2373, 2379, 9672, 2384, 2389, 2394, 2399, 9676,
-    9680, 9685, 9689, 9693, 9697, 9702, 9706, 9711, 9715, 9718, 9721, 9727,
-    9734, 9740, 9747, 9753, 9760, 9766, 9773, 9779, 9785, 9794, 9800, 9804,
-    9808, 9812, 9816, 9821, 9825, 9830, 9834, 9840, 9844, 9849, 9856, 9867,
-    9875, 9885, 9891, 9901, 9910, 9917, 9922, 9926, 9937, 9947, 9960, 9971,
-    9984, 9995, 10007, 10019, 10031, 10042, 10055, 10068, 10075, 10081,
-    10092, 10102, 10116, 10123, 10129, 10138, 10146, 10150, 10155, 10159,
-    10166, 10174, 10181, 10185, 10191, 10195, 10201, 10211, 10215, 10220,
-    10225, 10232, 10238, 8894, 10248, 10252, 10259, 10265, 10272, 10279,
-    10283, 10286, 10292, 10296, 10301, 10306, 10311, 10315, 10321, 10329,
-    10336, 10342, 10346, 10349, 10355, 10365, 10369, 10375, 10380, 10384,
-    10389, 10393, 10399, 10405, 10410, 10416, 10421, 10426, 10431, 2226,
-    10436, 10438, 10443, 10451, 10460, 10464, 10470, 10475, 10480, 10485,
-    10490, 10496, 10501, 10506, 4600, 10511, 10516, 10520, 10526, 10531,
-    10537, 10542, 10547, 10553, 10558, 10465, 10564, 10568, 10575, 10581,
-    10586, 10590, 7073, 10595, 10604, 10609, 10614, 9332, 9339, 10619, 3088,
-    10623, 10628, 10633, 10638, 10476, 10642, 10647, 10652, 10481, 10656,
-    10486, 10661, 10668, 10675, 10681, 10688, 10694, 10700, 10705, 10712,
-    10717, 10722, 10727, 10733, 10491, 10497, 10739, 10744, 10750, 10755,
-    10760, 10768, 1358, 10773, 1048, 10776, 10784, 10800, 10816, 10831,
-    10839, 10845, 10851, 10860, 10868, 10876, 10884, 10892, 10900, 10908,
-    10916, 10924, 10933, 10942, 10950, 10959, 10968, 10977, 10986, 10995,
-    11004, 11013, 11022, 11031, 11040, 11048, 11053, 11057, 11063, 11071,
-    11078, 11093, 11110, 11129, 11138, 11146, 11161, 11172, 11180, 11186,
-    11196, 11206, 11214, 11220, 11232, 11241, 11249, 11256, 11263, 11270,
-    11276, 11281, 11291, 11297, 11305, 11315, 11322, 11332, 11342, 11352,
-    11360, 11367, 11376, 11386, 11400, 11415, 11424, 11432, 11437, 11441,
-    11451, 11461, 11473, 11482, 11488, 11493, 11503, 11513, 11523, 11528,
-    11532, 11542, 11551, 11556, 11572, 11589, 11599, 11604, 11615, 11628,
-    11639, 11647, 11660, 11672, 11680, 11685, 11689, 11695, 11700, 11708,
-    11716, 11723, 11734, 11739, 11747, 11757, 11763, 11767, 11770, 11776,
-    11780, 11786, 11793, 11797, 11805, 11814, 11822, 11829, 11834, 11838,
-    11843, 11847, 11851, 11859, 11874, 11890, 11896, 11904, 11913, 11921,
-    11927, 11931, 11938, 11949, 11953, 11956, 11967, 11973, 11978, 10507,
-    11986, 11992, 11999, 12005, 12010, 12017, 12024, 12031, 12038, 12045,
-    12052, 12059, 12066, 12073, 12080, 12087, 12094, 12101, 12108, 12115,
-    12120, 11106, 12125, 12131, 12138, 12145, 12150, 12157, 12166, 12170,
-    12177, 12189, 12193, 12199, 12204, 12209, 12214, 12219, 12224, 12229,
-    12232, 12236, 11457, 12240, 12244, 12250, 12256, 12261, 12267, 12272,
-    12277, 12283, 12288, 12293, 10228, 12298, 12302, 12306, 12310, 12315,
-    12320, 12325, 12333, 12339, 12344, 12348, 12352, 12359, 12364, 12372,
-    12379, 12384, 12388, 12391, 12397, 12404, 12408, 12411, 12416, 12420,
-    4639, 12426, 12435, 46, 12443, 12449, 12454, 12459, 12467, 12474, 12479,
-    6991, 12485, 12491, 12496, 12500, 12503, 12509, 12517, 12524, 12539,
-    12558, 12570, 12583, 12596, 12609, 12623, 12636, 12651, 12658, 10512,
-    12664, 12678, 12683, 12689, 12694, 12702, 12707, 9072, 12712, 12715,
-    12723, 12730, 12735, 12739, 12745, 12749, 12754, 12759, 12764, 12769,
-    12774, 12779, 3093, 11194, 12784, 12788, 12794, 12800, 12805, 12811,
-    12816, 10521, 12822, 12828, 12833, 12838, 12846, 12852, 12865, 12873,
-    12880, 12886, 10527, 12892, 12900, 12908, 12915, 12928, 12941, 12953,
-    12963, 12975, 13003, 13011, 13020, 13027, 13039, 13046, 13056, 13065,
-    13073, 13080, 13085, 13091, 10532, 13096, 13102, 13107, 13112, 13117,
-    10538, 13122, 13125, 13132, 13138, 13152, 13165, 13176, 9860, 13187,
-    13193, 13202, 13210, 13217, 13223, 13234, 13240, 13245, 13253, 4113,
-    13259, 13264, 12531, 13270, 13277, 13282, 10543, 13288, 13293, 13300,
-    13306, 13312, 13317, 13325, 13333, 13340, 13344, 13356, 13370, 13380,
-    13385, 13389, 13400, 13406, 13411, 13416, 10548, 13420, 10554, 13425,
-    13428, 13433, 13445, 13452, 13457, 13461, 13469, 13474, 13478, 13483,
-    13487, 13494, 13500, 10559, 10466, 13507, 3098, 17, 13514, 13519, 13523,
-    13527, 13533, 13541, 13551, 13556, 13561, 13568, 13575, 13579, 13590,
-    13600, 13609, 13618, 13630, 13635, 13639, 13647, 13661, 13665, 13668,
-    13672, 13680, 13687, 13695, 13699, 13710, 13718, 13722, 13729, 13734,
-    13738, 13744, 13749, 13755, 13760, 13765, 13769, 13775, 13780, 13791,
-    13795, 13798, 13804, 13811, 13817, 13822, 13828, 13834, 13841, 13852,
-    13862, 13872, 13881, 13888, 13897, 13901, 10569, 10576, 10582, 10587,
-    13907, 13913, 13919, 13924, 13930, 10591, 13936, 13939, 13946, 13951,
-    13957, 13962, 13977, 13993, 14008, 14016, 14021, 14028, 14034, 14038,
-    14043, 14048, 14053, 14058, 14063, 14068, 14073, 14078, 14083, 1561, 383,
-    14088, 14096, 14103, 14109, 14114, 14119, 10596, 14121, 14125, 14130,
-    14134, 14144, 14149, 14153, 14156, 14165, 14169, 14172, 14179, 10605,
-    14184, 14187, 14195, 14202, 14210, 14214, 14220, 14228, 14232, 14239,
-    14248, 14255, 14251, 14262, 14266, 14272, 14276, 14280, 14284, 14290,
-    14296, 14306, 14314, 14321, 14325, 14333, 14338, 14342, 14349, 14354,
-    14361, 14365, 14370, 14375, 14379, 14386, 14392, 14400, 14406, 14411,
-    14421, 14428, 14433, 14438, 14442, 14446, 14454, 4469, 14462, 14467,
-    10610, 14471, 14478, 14482, 14485, 14493, 14500, 14504, 14507, 6846,
-    14511, 14516, 14521, 14525, 14536, 14546, 14551, 14557, 14562, 14571,
-    14575, 14578, 14586, 14591, 14596, 14603, 14608, 4865, 10615, 14613,
-    14617, 14624, 14629, 14634, 14639, 7021, 14644, 14649, 14654, 14659,
-    14665, 14670, 14676, 14681, 14686, 14691, 14696, 14701, 14706, 14711,
-    14716, 14721, 14726, 14731, 14736, 14741, 14746, 14751, 14756, 14762,
-    14767, 14772, 14777, 14782, 14787, 14793, 14798, 14803, 14809, 14814,
-    14820, 14825, 14831, 14836, 14841, 14846, 14851, 14857, 14862, 14867,
-    14872, 14880, 988, 112, 14886, 14890, 14895, 14900, 14904, 14908, 14912,
-    14917, 14921, 14926, 14930, 14933, 14937, 14941, 14947, 14952, 14962,
-    14968, 14976, 14982, 14986, 14990, 14997, 15005, 15014, 15025, 15035,
-    15042, 15049, 15053, 15062, 15071, 15079, 15086, 15095, 15104, 15113,
-    15122, 15132, 15142, 15152, 15162, 15172, 15181, 15191, 15201, 15211,
-    15221, 15231, 15241, 15251, 15260, 15270, 15280, 15290, 15300, 15310,
-    15320, 15329, 15339, 15349, 15359, 15369, 15379, 15389, 15399, 15409,
-    15419, 15428, 15438, 15448, 15458, 15468, 15478, 15488, 15498, 15508,
-    15518, 15528, 15537, 15543, 1132, 15547, 15550, 15554, 15559, 15566,
-    15572, 15577, 15581, 15586, 15595, 15604, 15612, 15617, 15621, 15625,
-    15631, 15636, 15642, 10624, 15647, 15652, 15661, 15666, 10634, 15671,
-    11444, 11454, 11464, 15674, 15680, 15688, 10639, 15695, 15699, 15703,
-    15709, 15714, 15718, 15728, 15734, 15740, 15745, 15754, 15762, 15769,
-    15776, 15781, 15788, 15793, 15797, 15800, 15811, 15821, 15834, 15843,
-    15851, 15862, 15874, 15884, 15894, 15899, 15903, 15908, 15913, 15917,
-    15923, 15931, 15938, 15949, 15954, 15964, 15973, 15977, 15980, 15987,
-    15997, 16006, 16013, 16017, 16024, 16030, 16035, 16040, 16044, 15590,
-    16053, 16057, 16063, 16067, 16072, 16076, 16083, 16090, 16094, 16103,
-    16111, 16119, 16126, 16134, 16146, 16157, 16167, 16174, 16180, 16189,
-    16200, 16209, 16221, 16233, 16245, 16255, 16264, 16274, 16283, 16291,
-    16298, 16308, 16317, 16325, 16329, 16334, 16340, 16346, 16351, 16356,
-    16360, 16365, 16370, 16375, 16380, 16385, 16390, 16395, 8738, 16400,
-    16402, 16406, 16411, 16417, 16424, 16430, 16436, 16445, 16449, 16455,
-    16463, 16470, 16479, 16488, 16497, 16506, 16515, 16524, 16533, 16542,
-    16552, 16562, 16571, 16577, 16584, 16591, 16597, 16611, 16617, 16624,
-    16632, 16641, 16649, 16655, 16664, 16670, 16679, 16690, 16696, 16706,
-    16714, 16721, 16729, 16737, 16744, 16753, 16766, 16775, 16783, 16790,
-    16803, 16809, 16815, 16825, 16834, 16843, 16852, 16860, 16865, 16869,
-    16875, 16881, 16886, 16893, 16900, 10242, 16905, 16910, 16917, 16925,
-    16930, 16942, 16949, 16954, 16966, 14943, 16971, 16977, 16985, 16991,
-    16996, 17004, 17012, 17019, 17027, 17034, 17040, 17046, 17054, 17062,
-    17068, 17076, 17082, 17087, 17093, 17100, 17106, 17111, 17115, 17126,
-    17134, 17142, 17148, 17153, 17160, 17169, 17175, 17180, 17188, 17195,
-    17204, 17218, 4413, 17222, 17227, 17232, 17238, 17243, 17248, 17252,
-    17257, 17262, 17267, 8737, 17272, 17277, 17282, 17287, 17292, 17296,
-    17301, 17306, 17311, 17316, 17322, 17328, 14216, 17333, 17339, 17344,
-    17349, 17354, 10643, 17359, 17364, 17369, 17374, 17379, 17393, 17410,
-    17428, 17440, 17453, 17470, 17486, 17503, 17513, 17532, 17543, 17554,
-    17565, 2803, 17576, 17587, 17598, 17615, 17626, 17637, 17642, 10648,
-    17647, 17651, 2483, 17655, 17661, 17664, 17670, 17678, 17686, 17692,
-    17701, 17708, 17713, 17721, 17729, 17736, 17740, 17745, 17751, 17758,
-    17766, 17773, 17785, 17792, 17798, 17806, 17811, 17817, 17823, 17828,
-    13971, 17835, 17839, 17848, 17854, 17859, 17867, 17876, 17884, 17891,
-    17897, 17905, 17912, 17918, 17924, 17931, 17938, 17944, 17950, 17954,
-    17963, 17971, 17976, 17986, 17993, 17999, 18007, 18013, 18021, 18029,
-    18036, 18049, 18053, 18060, 18069, 18078, 18087, 18095, 18105, 18112,
-    18117, 3969, 18124, 18129, 1248, 18133, 18140, 17273, 18144, 18150,
-    18154, 18162, 18174, 18179, 18186, 18192, 18197, 18204, 17278, 18208,
-    18212, 18220, 18225, 18229, 17283, 18233, 17288, 18237, 18244, 18249,
-    18253, 18260, 18264, 18267, 18275, 18282, 18287, 18295, 18299, 18306,
-    18323, 18332, 18341, 18345, 18348, 18354, 18362, 18368, 18373, 18377,
-    18382, 18387, 18392, 18397, 18402, 18407, 4047, 18412, 18414, 18422,
-    18429, 18439, 18451, 18456, 18460, 18466, 18471, 18479, 18483, 18489,
-    18494, 18500, 18503, 18510, 18518, 18525, 18531, 18536, 18542, 18547,
-    18554, 18560, 18565, 18575, 18584, 18591, 18596, 18600, 18606, 18612,
-    18616, 18623, 18629, 18634, 18640, 18648, 18656, 18663, 18669, 18675,
-    18680, 18686, 18692, 18700, 18705, 18710, 18718, 18724, 18730, 18735,
-    18742, 18747, 18751, 18757, 18763, 18768, 18774, 18781, 18786, 18792,
-    18795, 18801, 18812, 18818, 18827, 18830, 18834, 18838, 18852, 18865,
-    18877, 18883, 18888, 18895, 18901, 18907, 18918, 18930, 18942, 18952,
-    18961, 18969, 18976, 18987, 18997, 19007, 19015, 19018, 17302, 19023,
-    19028, 19035, 17307, 17458, 19043, 19056, 19071, 19082, 17475, 19100,
-    19113, 19126, 19137, 12546, 19148, 19161, 19180, 19191, 19202, 19213,
-    2824, 19226, 19230, 19238, 19249, 19260, 19268, 19283, 19298, 19309,
-    19316, 19322, 19330, 19334, 19340, 19344, 19347, 19360, 19372, 19382,
-    19390, 19397, 19405, 19415, 19420, 19427, 19432, 19439, 19450, 19460,
-    19466, 19471, 19476, 17312, 19480, 19486, 19493, 19499, 19504, 19509,
-    19514, 19518, 17317, 17323, 19522, 17329, 19527, 19535, 19540, 19544,
-    19551, 19559, 19566, 19575, 19582, 19586, 19590, 19595, 19600, 19605,
-    19610, 19615, 10487, 19620, 19622, 19627, 19632, 19638, 19643, 19648,
-    19653, 19658, 19662, 19668, 19674, 19679, 19685, 19690, 19695, 19699,
-    19705, 19710, 19714, 19719, 19724, 19736, 19741, 19747, 19752, 19757,
-    19763, 19769, 19774, 19779, 19784, 19791, 19797, 19808, 19815, 19824,
-    19829, 19833, 279, 19837, 19845, 19850, 19856, 19862, 19867, 19874,
-    19881, 19887, 19892, 19898, 19903, 19908, 19913, 19920, 19930, 19938,
-    19943, 19948, 19955, 19961, 19970, 19980, 19990, 20004, 20018, 20032,
-    20046, 20061, 20076, 20093, 20111, 20124, 20130, 20135, 20140, 20144,
-    20152, 20157, 20165, 20171, 20177, 20182, 20187, 20191, 20197, 20202,
-    20206, 20213, 20218, 20222, 20233, 20239, 20244, 20249, 20256, 20261,
-    20265, 3927, 20270, 20276, 20283, 17334, 20289, 20293, 20299, 20304,
-    20309, 20313, 20319, 20324, 20329, 20336, 20341, 15730, 20345, 20350,
-    20354, 20359, 20365, 20371, 20378, 20388, 20396, 20403, 20408, 20412,
-    20421, 20429, 20436, 20443, 20449, 20454, 20460, 20465, 20470, 20476,
-    20481, 20487, 20492, 20498, 20504, 20511, 20517, 20522, 20527, 10713,
-    20536, 20539, 20547, 20553, 20558, 20563, 20573, 20580, 20586, 20591,
-    20596, 20602, 20607, 20613, 20618, 20624, 20631, 20637, 20643, 20648,
-    20656, 20663, 20668, 20673, 20679, 20684, 20688, 20697, 20708, 20715,
-    20722, 20730, 20737, 20744, 20749, 20754, 20760, 20765, 20773, 20779,
-    20785, 20790, 20797, 20803, 20808, 20812, 20818, 20823, 20828, 20832,
-    20837, 1321, 8762, 3112, 20841, 20845, 20849, 20853, 20857, 20861, 20864,
-    20869, 20876, 20884, 20894, 20905, 20915, 20926, 20938, 20949, 20959,
-    20970, 20982, 20993, 21005, 21018, 21030, 21041, 21051, 21062, 21074,
-    21085, 21098, 21110, 21121, 21133, 21146, 21158, 21171, 21185, 21198,
-    21210, 21221, 21231, 21242, 21254, 21265, 21277, 21290, 21302, 21313,
-    21325, 21338, 21351, 21365, 21378, 21390, 21401, 21413, 21426, 21438,
-    21451, 21465, 21478, 21490, 21503, 21517, 21530, 21544, 21558, 21571,
-    21583, 21594, 21604, 17345, 21611, 21617, 21627, 21635, 21642, 21650,
-    21660, 21669, 21682, 21687, 21692, 21700, 21707, 15839, 15848, 21714,
-    21724, 21739, 21745, 21752, 21759, 21766, 21772, 21778, 21789, 21797,
-    21805, 21815, 21825, 21834, 17350, 21843, 21849, 21855, 21864, 21872,
-    21880, 21885, 21894, 21902, 21914, 21924, 21934, 21944, 21953, 21965,
-    21975, 21985, 21996, 22003, 22008, 22015, 22027, 22039, 22051, 22063,
-    22075, 22087, 22099, 22111, 22123, 22135, 22146, 22158, 22170, 22182,
-    22194, 22206, 22218, 22230, 22242, 22254, 22266, 22277, 22289, 22301,
-    22313, 22325, 22337, 22349, 22361, 22373, 22385, 22397, 22408, 22420,
-    22432, 22444, 22456, 22468, 22480, 22492, 22504, 22516, 22528, 22539,
-    22551, 22563, 22575, 22587, 22599, 22611, 22623, 22635, 22647, 22659,
-    22670, 22682, 22694, 22706, 22718, 22730, 22742, 22754, 22766, 22778,
-    22790, 22801, 22813, 22825, 22837, 22849, 22861, 22873, 22885, 22897,
-    22909, 22921, 22932, 22944, 22956, 22968, 22980, 22993, 23006, 23019,
-    23032, 23045, 23058, 23071, 23083, 23096, 23109, 23122, 23135, 23148,
-    23161, 23174, 23187, 23200, 23213, 23225, 23238, 23251, 23264, 23277,
-    23290, 23303, 23316, 23329, 23342, 23355, 23367, 23380, 23393, 23406,
-    23419, 23432, 23445, 23458, 23471, 23484, 23497, 23509, 23522, 23535,
-    23548, 23561, 23574, 23587, 23600, 23613, 23626, 23639, 23651, 23664,
-    23677, 23690, 23703, 23716, 23729, 23742, 23755, 23768, 23781, 23793,
-    23804, 23817, 23830, 23843, 23856, 23869, 23882, 23895, 23908, 23921,
-    23934, 23946, 23959, 23972, 23985, 23998, 24011, 24024, 24037, 24050,
-    24063, 24076, 24088, 24101, 24114, 24127, 24140, 24153, 24166, 24179,
-    24192, 24205, 24218, 24230, 24243, 24256, 24269, 24282, 24295, 24308,
-    24321, 24334, 24347, 24360, 24372, 24385, 24398, 24411, 24424, 24437,
-    24450, 24463, 24476, 24489, 24502, 24514, 24527, 24540, 24553, 24566,
-    24579, 24592, 24605, 24618, 24631, 24644, 24656, 24669, 24682, 24695,
-    24708, 24721, 24734, 24747, 24760, 24773, 24786, 24798, 24811, 24824,
-    24837, 24850, 24863, 24876, 24889, 24902, 24915, 24928, 24940, 24953,
-    24966, 24979, 24992, 25005, 25018, 25031, 25044, 25057, 25070, 25082,
-    25095, 25108, 25121, 25134, 25147, 25160, 25173, 25186, 25199, 25212,
-    25224, 25235, 25244, 25252, 25260, 25267, 25273, 25277, 25283, 25289,
-    25298, 25306, 25311, 25317, 25322, 25326, 25335, 10492, 25346, 25352,
-    25359, 25367, 25374, 13145, 13159, 25381, 25388, 25397, 25402, 25407,
-    25414, 25419, 25424, 8778, 8784, 8790, 25429, 25434, 25437, 25442, 25450,
-    25457, 25464, 25476, 25483, 25489, 25498, 25503, 25512, 25521, 25527,
-    25535, 25544, 25548, 25554, 25559, 25569, 25576, 25582, 25590, 25596,
-    25603, 25609, 25619, 25628, 25632, 25639, 25643, 25648, 25654, 25662,
-    25666, 25676, 17360, 25685, 25691, 25695, 25704, 25713, 25723, 25729,
-    17365, 25736, 25743, 25754, 25762, 25772, 25781, 25789, 10207, 25797,
-    25802, 25808, 25813, 25817, 25821, 25825, 11301, 25830, 25838, 25845,
-    25854, 25862, 25869, 25876, 25885, 25891, 1062, 25898, 25904, 25908,
-    25914, 25921, 25927, 25935, 25941, 25948, 25954, 25960, 25969, 25973,
-    25981, 25989, 25996, 26005, 26012, 26017, 26021, 26031, 26042, 26053,
-    26058, 26063, 26069, 26078, 26083, 26096, 9000, 26100, 26106, 26112,
-    26118, 26123, 26131, 26135, 26142, 26151, 26156, 17638, 26164, 26168,
-    26180, 26185, 26189, 26192, 26198, 26204, 26210, 26215, 26220, 26224,
-    26227, 26238, 26243, 10769, 26250, 26255, 26260, 26265, 26270, 26275,
-    26280, 26285, 26290, 10774, 26295, 26300, 26305, 26310, 26315, 26320,
-    26325, 26330, 26335, 26340, 26345, 26350, 26356, 26361, 26366, 26371,
-    26376, 26381, 26386, 26391, 26396, 26401, 26407, 26413, 26418, 26423,
-    26428, 26433, 26438, 26443, 26448, 26453, 26458, 26464, 26469, 26474,
-    26479, 26485, 26491, 26496, 26501, 26506, 26511, 26516, 26521, 26526,
-    26531, 26537, 26542, 26547, 26552, 26557, 26563, 26568, 26573, 26577,
-    1244, 145, 26585, 26589, 26593, 26597, 26602, 26606, 15736, 2409, 26610,
-    26615, 26619, 26624, 26628, 26633, 26637, 26643, 26648, 26652, 26656,
-    26664, 26668, 26672, 26679, 26684, 26689, 26693, 26699, 26704, 26708,
-    26713, 26718, 26722, 26729, 26736, 26743, 26748, 26752, 26756, 26761,
-    26765, 26768, 26774, 26787, 26792, 26798, 26807, 26812, 11049, 26817,
-    26826, 26831, 26834, 26838, 26843, 26848, 26853, 26858, 26863, 2920,
-    2925, 26868, 26874, 26878, 26884, 3888, 26889, 26894, 26899, 26905,
-    26910, 16686, 26915, 26920, 26925, 26930, 26936, 26941, 26946, 26952,
-    26957, 26961, 26966, 26971, 26976, 26981, 26986, 26990, 26995, 26999,
-    27004, 27009, 27014, 27019, 27023, 27028, 27032, 27037, 27042, 27047,
-    26962, 3121, 26967, 27052, 27060, 27067, 11395, 27079, 27087, 27097,
-    27115, 27134, 27143, 27151, 26972, 27158, 27163, 27171, 26977, 27176,
-    27181, 27189, 27194, 27199, 27203, 19858, 27208, 27216, 27221, 27225,
-    27232, 27238, 27247, 27251, 27259, 27265, 27269, 27272, 20692, 27279,
-    27283, 27287, 27292, 27298, 27305, 27310, 10234, 27314, 27319, 27324,
-    27329, 27334, 27339, 1663, 1668, 27344, 27350, 27356, 27361, 27365,
-    27369, 27373, 27377, 27381, 27385, 27389, 27393, 25470, 27396, 27403,
-    27411, 27417, 27423, 27428, 27433, 27439, 27443, 27448, 27455, 16586,
-    16593, 27461, 27473, 27476, 27483, 27487, 19883, 27494, 27502, 27513,
-    27522, 27535, 27545, 27559, 27571, 27585, 27598, 27610, 27620, 27632,
-    27638, 27653, 27677, 27695, 27714, 27727, 27741, 27759, 27775, 27792,
-    27810, 27821, 27840, 27857, 27877, 27895, 27907, 27921, 27935, 27947,
-    27964, 27983, 28001, 28013, 28031, 28050, 17518, 28063, 28083, 28095,
-    12577, 28107, 28112, 28117, 28122, 28131, 28137, 28142, 28146, 28153,
-    28159, 28163, 28168, 28173, 28178, 28183, 28188, 28193, 2506, 28198,
-    28204, 28208, 28211, 28222, 28226, 28229, 28237, 28243, 14882, 28247,
-    28256, 28267, 28273, 28279, 28294, 28303, 28311, 28318, 28323, 28327,
-    28334, 28340, 28349, 28357, 28364, 28374, 28383, 28393, 28398, 28407,
-    28416, 28427, 28438, 28448, 28465, 4557, 28475, 28479, 28489, 28497,
-    28507, 28518, 28524, 28529, 28539, 28547, 28554, 28560, 28567, 28572,
-    27010, 28576, 28585, 28589, 28592, 28597, 28605, 28612, 28621, 28629,
-    28637, 28645, 28655, 28664, 28670, 28676, 28682, 28686, 27015, 27020,
-    28690, 28700, 28710, 28720, 28728, 28735, 28745, 28753, 28761, 28767,
-    28775, 798, 28784, 17725, 649, 28798, 28807, 28815, 28826, 28837, 28847,
-    28856, 28868, 28877, 28886, 28893, 28899, 28909, 28918, 28927, 28935,
-    28943, 28953, 28961, 28969, 28976, 28982, 28987, 28992, 28997, 8156,
-    29002, 29005, 29009, 29014, 29022, 29028, 29033, 29037, 3751, 27033,
-    29045, 27038, 29051, 29057, 29063, 29068, 29073, 29077, 29085, 29091,
-    29097, 29101, 3912, 29109, 29114, 29119, 29123, 29127, 11681, 29134,
-    29142, 29156, 29163, 29170, 29176, 11690, 11696, 29184, 29192, 29199,
-    29204, 29209, 27043, 29215, 29226, 29235, 19031, 29243, 29248, 2755,
-    29253, 29264, 29270, 29275, 29279, 29283, 29286, 29293, 29300, 29306,
-    29314, 29321, 29327, 29331, 8196, 29336, 29340, 29344, 29352, 29357,
-    29362, 29367, 1696, 29372, 29377, 29382, 29387, 29392, 29397, 29402,
-    29407, 29412, 29417, 29422, 29427, 29432, 29437, 29443, 29448, 29453,
-    29458, 29463, 29468, 29473, 29479, 29484, 29489, 29494, 29499, 29504,
-    29509, 29514, 29520, 29526, 29531, 29537, 29542, 29547, 5, 29553, 29557,
-    29561, 29565, 29570, 29574, 29578, 29582, 29586, 29591, 29595, 29600,
-    29604, 29607, 29611, 29616, 29620, 29625, 29629, 29633, 29637, 29642,
-    29646, 29650, 29660, 29665, 29669, 29673, 29678, 29683, 29692, 29697,
-    29702, 29706, 29710, 29719, 29732, 29744, 29753, 29762, 29767, 29773,
-    29778, 29782, 29786, 29796, 29805, 29813, 29819, 29824, 29828, 29835,
-    29842, 29852, 29861, 29869, 12934, 29877, 29884, 29892, 29901, 29910,
-    29918, 29928, 29933, 29937, 29941, 29944, 29946, 29950, 29954, 29959,
-    29964, 29968, 29972, 29975, 29979, 29982, 29986, 29989, 29992, 29996,
-    30002, 30006, 30010, 30014, 30018, 30023, 30028, 30033, 30037, 30040,
-    30045, 30051, 30056, 30062, 30067, 30071, 30077, 30081, 30085, 30090,
-    30094, 30099, 30104, 30108, 30112, 30119, 30123, 30126, 30130, 30134,
-    30140, 30145, 30151, 30155, 30159, 30164, 30171, 30177, 30181, 30190,
-    30194, 30198, 30201, 30207, 30212, 30218, 1385, 1748, 30223, 30228,
-    30233, 30238, 30243, 30248, 30253, 2213, 827, 30258, 30261, 30265, 30269,
-    30274, 30278, 17737, 30282, 30287, 30292, 30296, 30299, 30304, 30308,
-    30313, 30317, 17741, 30322, 30325, 30328, 30334, 30338, 30343, 30347,
-    30360, 30368, 30372, 30375, 30383, 30392, 30399, 30404, 30410, 30416,
-    30424, 30431, 30438, 30442, 30446, 30450, 30455, 30460, 30464, 30472,
-    30477, 30484, 30496, 30507, 30512, 30516, 30523, 30527, 30532, 30538,
-    30541, 30546, 30551, 30558, 30562, 30566, 30569, 30575, 8900, 2413,
-    30579, 30584, 30600, 11100, 30620, 30629, 30645, 30649, 30656, 30659,
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-    30936, 30943, 30949, 30954, 30963, 30970, 30976, 30981, 30989, 30997,
-    31004, 31011, 28499, 31023, 31035, 31049, 31057, 31065, 31073, 31080,
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-    31298, 10806, 17799, 31306, 31313, 31318, 31325, 31331, 31337, 31344,
-    14024, 31351, 31354, 31366, 31374, 31380, 31385, 31389, 31400, 31410,
-    31420, 11620, 31429, 31438, 31446, 31456, 31465, 31472, 31479, 31487,
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-    31783, 31789, 31794, 31799, 31804, 31808, 31813, 31820, 31826, 31835,
-    31843, 31847, 31854, 31864, 31870, 31879, 31885, 31892, 4771, 31898,
-    31904, 31909, 31916, 31928, 31939, 31944, 31952, 31956, 31966, 31972,
-    31976, 31981, 31991, 32000, 32004, 32011, 32019, 32026, 32032, 32037,
-    32045, 32052, 32057, 32064, 32076, 32085, 32089, 32097, 15656, 32101,
-    32111, 32115, 32123, 32130, 32137, 30379, 32148, 32153, 32157, 32164,
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-    19087, 32363, 27883, 32377, 32389, 12590, 32403, 32408, 32413, 32418,
-    32424, 32430, 32436, 32440, 32448, 32454, 32461, 32466, 32476, 32483,
-    32489, 12128, 32495, 32497, 32502, 32510, 32514, 31816, 32520, 32527,
-    13866, 13876, 32534, 32541, 32551, 32556, 32560, 32563, 32569, 32577,
-    32589, 32599, 32615, 32628, 32642, 19105, 32656, 32663, 32667, 32670,
-    32675, 32679, 32686, 32693, 32700, 32707, 32717, 32722, 32727, 32732,
-    32740, 32748, 32753, 32762, 28520, 3561, 32767, 32770, 32773, 32778,
-    32785, 32790, 32795, 32811, 32819, 32827, 10864, 32835, 32840, 32844,
-    32850, 32855, 32861, 32864, 32870, 32882, 32890, 32897, 32903, 32910,
-    32921, 32935, 32948, 32954, 32963, 32969, 32978, 32990, 33001, 33011,
-    33020, 33029, 33037, 33047, 33056, 33067, 673, 33074, 33081, 33087,
-    33092, 33098, 33105, 33111, 33122, 33132, 33142, 33151, 33157, 33164,
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-    33239, 33245, 33251, 33256, 33260, 33263, 33269, 33276, 33281, 33286,
-    33293, 33298, 33302, 33314, 33325, 33334, 33342, 18008, 33347, 33355,
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-    33513, 33519, 33523, 33529, 33537, 33559, 33583, 33594, 33603, 33609,
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-    33961, 33964, 33967, 33975, 33983, 33992, 34002, 34011, 34017, 34022,
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-    34136, 34144, 34153, 34158, 34169, 34174, 34183, 34189, 34200, 34204,
-    34207, 34217, 34226, 34234, 34244, 34254, 34262, 34271, 34278, 34284,
-    34292, 34299, 34308, 34317, 34322, 34327, 34331, 34339, 34346, 34352,
-    34356, 34364, 34371, 34382, 34397, 34404, 34410, 34420, 34429, 34435,
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-    347, 34699, 34709, 34718, 34726, 34735, 34743, 34750, 34761, 34769,
-    34778, 34786, 34796, 34804, 34809, 11794, 34813, 34821, 34829, 34834,
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-    34995, 35001, 35006, 35014, 35021, 13376, 35027, 35034, 35039, 35045,
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-    35298, 35306, 35313, 35324, 35333, 35341, 35366, 35374, 35379, 3985, 401,
-    35385, 35393, 35401, 35408, 35413, 35419, 35424, 2281, 12792, 35431,
-    35437, 31595, 31934, 35443, 656, 106, 35447, 35451, 35457, 595, 10679,
-    35462, 35467, 35474, 35480, 35484, 35488, 1549, 35491, 35495, 18296,
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-    35724, 35731, 35734, 35738, 35742, 1351, 35752, 35754, 35759, 35765,
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-    35821, 35826, 35831, 35836, 35841, 35847, 35853, 35859, 35865, 35870,
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-    35928, 35933, 35938, 35944, 35949, 35955, 35960, 35965, 35970, 35975,
-    35981, 35986, 35992, 35997, 36002, 36007, 36012, 36017, 36022, 36027,
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-    36453, 36461, 36466, 36471, 36477, 36483, 36489, 36494, 36502, 36506,
-    36509, 36514, 36519, 36523, 36528, 36533, 36537, 36542, 36546, 36549,
-    36554, 4211, 21695, 36559, 36564, 36569, 36574, 36582, 25865, 34932,
-    10318, 36587, 36592, 36596, 36601, 36605, 36609, 36614, 36618, 36621,
-    36624, 36628, 36633, 36637, 36645, 36649, 36652, 36657, 36661, 36665,
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-    37112, 37117, 37124, 37131, 37137, 37143, 37148, 19801, 37155, 37161,
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-    37267, 37272, 37277, 37281, 37286, 37291, 37295, 37300, 37304, 37309,
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-    18452, 37361, 37368, 37377, 37383, 37389, 37398, 37406, 37415, 37423,
-    37428, 37432, 37439, 37445, 37453, 37457, 37460, 37465, 37469, 37478,
-    37486, 37504, 37510, 1403, 37516, 37519, 37523, 27351, 27357, 37529,
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-    37612, 37620, 37625, 37630, 37635, 37640, 6734, 16742, 25864, 37645,
-    37650, 37654, 16733, 37659, 37665, 37670, 37676, 37681, 37687, 37692,
-    37698, 37703, 37709, 37715, 37721, 37726, 37682, 37688, 37730, 37735,
-    37741, 37746, 37752, 37757, 37763, 37768, 37693, 12422, 37772, 37704,
-    37710, 37716, 3054, 3760, 37778, 37781, 37786, 37792, 37798, 37804,
-    37811, 37817, 37823, 37829, 37835, 37841, 37847, 37853, 37859, 37865,
-    37871, 37877, 37883, 37890, 37896, 37902, 37908, 37914, 37920, 37923,
-    37928, 37931, 37938, 37943, 37951, 37955, 37960, 37965, 37971, 37976,
-    37981, 37985, 37990, 37996, 38001, 38007, 38012, 38018, 38023, 38029,
-    38035, 38039, 38044, 38049, 38054, 38059, 38063, 38068, 38073, 38078,
-    38084, 38090, 38096, 38102, 38107, 38111, 38114, 38120, 38126, 38135,
-    38143, 38150, 38155, 38159, 38163, 38168, 18239, 38173, 38181, 38187,
-    4152, 1253, 38192, 38197, 38201, 9016, 38207, 38213, 38220, 9025, 38224,
-    38230, 38236, 38243, 38249, 38258, 38266, 38278, 38287, 38291, 38298,
-    38304, 38309, 38313, 38317, 38320, 38330, 38339, 38347, 37683, 38352,
-    38362, 38372, 38382, 38388, 38393, 38403, 38408, 38421, 38435, 38446,
-    38458, 38470, 38484, 38497, 38509, 38521, 17559, 38535, 38540, 38545,
-    38549, 38553, 38557, 38561, 38567, 38572, 38577, 38582, 38587, 38592,
-    38597, 1737, 32999, 38602, 38607, 38612, 37731, 38617, 38620, 38625,
-    38630, 38635, 38641, 38647, 19411, 11994, 38652, 38658, 38665, 19039,
-    38671, 38676, 38681, 38685, 38690, 38695, 37736, 38700, 38705, 38710,
-    38716, 37742, 38721, 38724, 38731, 38739, 38745, 38751, 38757, 38768,
-    38773, 38780, 38787, 38794, 38802, 38811, 38820, 38826, 38832, 38840,
-    37747, 38845, 38851, 38857, 37753, 38862, 38867, 38875, 38883, 38889,
-    38896, 38902, 38909, 38916, 38922, 38930, 38940, 38947, 38953, 38958,
-    38964, 38969, 38974, 38981, 38990, 38998, 39003, 39009, 39016, 39024,
-    39030, 39035, 39041, 39050, 39057, 33997, 39063, 39067, 39072, 39081,
-    39086, 39091, 39096, 14972, 39104, 39109, 39114, 39119, 39123, 39128,
-    39133, 39140, 39145, 39150, 39155, 37758, 25793, 39161, 2655, 158, 39164,
-    39167, 39171, 39175, 39185, 39193, 39200, 39204, 39208, 39211, 39219,
-    39226, 39233, 31888, 39242, 39245, 39252, 39258, 39263, 39267, 39274,
-    39278, 39286, 39294, 39301, 39316, 39320, 39324, 39327, 39333, 39340,
-    39344, 39350, 39354, 39361, 39369, 39377, 39384, 37694, 39391, 39399,
-    39404, 39416, 12075, 12082, 12089, 12096, 12103, 12110, 626, 434, 39422,
-    39427, 39432, 39438, 39443, 39448, 4178, 39453, 39456, 39461, 39466,
-    39471, 39476, 39481, 39488, 27469, 39493, 39498, 39503, 39508, 39513,
-    39519, 39524, 39530, 37934, 39536, 39541, 39547, 39553, 39563, 39568,
-    39573, 39577, 39582, 39587, 39592, 39597, 39610, 39615, 27083, 20286,
-    1064, 39619, 39625, 39629, 39634, 39639, 39645, 39650, 39655, 39659,
-    39664, 39669, 39675, 39680, 39685, 1258, 39689, 39694, 39699, 39704,
-    39708, 39713, 39718, 39723, 39729, 39735, 39740, 39744, 39748, 39753,
-    39758, 39763, 39767, 39772, 39780, 39784, 39790, 39794, 39801, 39810,
-    20057, 37705, 39816, 39823, 39831, 39839, 39846, 39852, 39861, 39874,
-    39886, 39891, 39897, 39901, 2981, 39905, 39909, 39335, 39918, 39929,
-    39940, 39945, 34065, 39950, 39955, 39959, 34185, 27362, 39964, 39971,
-    39975, 39980, 37711, 25900, 39984, 39989, 39995, 40000, 40004, 40008,
-    40011, 40015, 40021, 40030, 40041, 40053, 37717, 40058, 40061, 40065,
-    40069, 40074, 40079, 40084, 40089, 40094, 40099, 40104, 40109, 373,
-    40114, 40119, 40124, 40129, 40134, 40139, 40145, 40150, 40155, 40161,
-    40166, 40172, 40177, 40183, 40188, 40193, 40198, 40203, 40208, 40213,
-    40218, 40223, 40229, 40234, 40239, 40244, 40249, 40254, 40259, 40264,
-    40270, 40276, 40281, 40286, 40291, 40296, 40301, 40306, 40311, 40316,
-    40321, 40326, 40331, 40336, 40341, 40346, 40351, 40356, 40361, 40366,
-    40376, 40386, 40392, 342, 14, 40397, 40400, 40404, 40408, 40416, 40420,
-    40424, 31568, 16975, 1818, 40427, 40432, 40436, 40441, 40445, 40450,
-    40454, 40459, 40463, 40466, 40468, 40472, 40477, 40481, 40492, 40495,
-    40497, 40501, 40513, 40525, 40534, 40538, 40548, 40552, 40558, 40563,
-    40572, 40578, 40583, 40588, 40592, 40596, 40601, 40608, 40613, 40619,
-    40624, 40628, 40635, 31169, 31179, 40639, 40644, 40649, 40654, 40661,
-    40665, 40672, 40679, 40685, 9171, 40689, 40698, 40706, 40721, 40735,
-    40744, 40752, 40763, 40772, 40777, 40784, 40794, 8165, 40804, 40809,
-    40815, 40820, 40824, 40827, 40832, 40836, 40841, 40845, 40852, 40857,
-    40862, 40867, 40877, 40882, 40887, 40892, 10188, 40897, 40899, 40907,
-    40910, 40913, 40921, 40936, 40944, 40954, 40956, 40959, 40963, 40969,
-    40973, 40978, 40983, 41001, 41015, 41034, 41051, 41060, 41068, 41073,
-    41078, 1396, 41084, 41090, 41095, 41105, 41114, 41122, 41127, 41133,
-    41138, 41147, 41156, 41167, 41172, 41179, 41185, 41189, 41198, 41205,
-    41213, 41220, 41233, 41241, 41245, 41255, 41261, 41266, 41270, 41278,
-    41286, 41291, 41295, 41299, 41308, 41314, 41319, 41327, 41337, 41346,
-    41355, 41364, 41375, 41383, 41394, 41403, 41411, 41418, 41424, 41429,
-    41440, 41451, 41456, 41460, 41463, 41467, 41477, 41485, 41491, 41502,
-    41513, 41524, 41535, 41546, 41557, 41568, 41579, 41591, 41603, 41615,
-    41627, 41639, 41651, 41663, 41672, 41676, 41684, 41690, 41696, 41703,
-    41709, 41714, 41720, 41724, 41729, 41734, 41739, 40371, 40381, 2526,
-    41744, 41746, 41751, 41756, 41761, 41764, 41766, 41770, 41773, 41780,
-    41784, 11644, 41788, 41794, 41801, 41807, 41817, 41822, 41828, 41832,
-    41837, 41850, 31758, 41856, 41862, 41871, 41880, 21918, 41887, 41896,
-    41904, 38368, 41910, 41915, 41919, 41928, 41936, 41943, 41948, 41952,
-    41957, 41962, 41970, 41974, 41982, 41988, 41994, 41999, 42004, 42008,
-    42011, 42016, 42029, 42045, 27953, 42062, 42074, 42091, 42103, 42117,
-    27970, 27989, 42129, 42141, 2855, 42155, 42160, 42165, 42170, 42174,
-    42181, 42193, 42200, 42209, 42219, 42222, 42233, 42244, 42252, 42257,
-    42261, 42266, 42271, 42276, 42281, 42286, 42291, 1768, 947, 42296, 42300,
-    42304, 42307, 42312, 42317, 42323, 42328, 42333, 42339, 42345, 42350,
-    42354, 42359, 42364, 42369, 42373, 42376, 42382, 42387, 42392, 42397,
-    42401, 42406, 42412, 42420, 32069, 42425, 42430, 42437, 42443, 42449,
-    42454, 42462, 27478, 42469, 42474, 42479, 42484, 42488, 42491, 42496,
-    42500, 42504, 42511, 42517, 42523, 42529, 42536, 42541, 42547, 41281,
-    42551, 42555, 42560, 42573, 42578, 42584, 42592, 42599, 42607, 42617,
-    42623, 42629, 42635, 42639, 42648, 42656, 42663, 42668, 42673, 12445,
-    42678, 42688, 42695, 42701, 42711, 42716, 42722, 42730, 4017, 42737,
-    42744, 42750, 42757, 4023, 42761, 42766, 42777, 42784, 42790, 42799,
-    42803, 42806, 4609, 42813, 42820, 42826, 42832, 42840, 42850, 35414,
-    42857, 42865, 42871, 42876, 42882, 42887, 42891, 31517, 42897, 42904,
-    42910, 42918, 42927, 42934, 42940, 42951, 28772, 42957, 42964, 42970,
-    42980, 42985, 42989, 42997, 43005, 43012, 43018, 43023, 11246, 941,
-    43028, 43032, 43034, 43038, 43043, 43046, 43048, 43053, 43059, 43064,
-    43069, 43076, 39484, 43082, 43087, 43091, 43096, 43100, 43109, 43113,
-    43119, 43126, 43132, 43139, 43144, 43153, 43158, 43162, 43167, 43174,
-    43182, 43190, 43195, 25956, 43199, 43202, 43206, 43210, 12889, 1005,
-    43214, 43219, 43227, 43232, 43236, 43245, 43252, 43256, 43260, 43268,
-    43275, 16260, 43285, 43289, 43293, 43301, 43309, 43315, 43320, 43324,
-    43333, 16008, 43339, 43348, 43355, 43360, 43367, 43374, 43382, 43389,
-    43397, 43405, 43414, 43419, 43426, 43433, 43440, 43447, 43454, 43459,
-    43466, 43472, 43489, 43497, 43507, 43515, 43522, 43530, 461, 43534,
-    43540, 43544, 43549, 40768, 43555, 43558, 43562, 43568, 43579, 43587,
-    4028, 43595, 43601, 43607, 43617, 43623, 43632, 43641, 43651, 43658,
-    43664, 43669, 4034, 4040, 43678, 43686, 43693, 43697, 14356, 43705,
-    43709, 43716, 43724, 43731, 43740, 43747, 43753, 43762, 43772, 43778,
-    43786, 43795, 43802, 43810, 43817, 26758, 43821, 43828, 43834, 43844,
-    43853, 43861, 43872, 43876, 43886, 43893, 43898, 43903, 43909, 43916,
-    43924, 43933, 43942, 43952, 43963, 43970, 43975, 43982, 3269, 43990,
-    43996, 44001, 44008, 44014, 44020, 44025, 44038, 44051, 44064, 44071,
-    44077, 44085, 44093, 44098, 44102, 44106, 44111, 44116, 44121, 44126,
-    44131, 44136, 1365, 44141, 44145, 44149, 44153, 44157, 44161, 44165,
-    44169, 44173, 44177, 44181, 44185, 44189, 44193, 44197, 44201, 44205,
-    44209, 44213, 44217, 44221, 44225, 44229, 44233, 44237, 44241, 44245,
-    44249, 44253, 44257, 44261, 44265, 44269, 44273, 44277, 44281, 44285,
-    44289, 44293, 44297, 44301, 44305, 44309, 44313, 44317, 44321, 44325,
-    44329, 44333, 44337, 44341, 44345, 44349, 44353, 44357, 44361, 44365,
-    44369, 44373, 44377, 44381, 44385, 44389, 44393, 44397, 44401, 44405,
-    44409, 44413, 44417, 44421, 44425, 44429, 44433, 44437, 44441, 44445,
-    44449, 44453, 44457, 44461, 44465, 44469, 44473, 44477, 44481, 44485,
-    44489, 44493, 44497, 44501, 44505, 44509, 44513, 44517, 44521, 44525,
-    44529, 44533, 44537, 44541, 44545, 44549, 44553, 44557, 44561, 44565,
-    44569, 44573, 44577, 44581, 44585, 44589, 44593, 44597, 44601, 44605,
-    44609, 44613, 44617, 44621, 44625, 44629, 44633, 44637, 44641, 44645,
-    44649, 44653, 44657, 44661, 44665, 44669, 44673, 44677, 44681, 44685,
-    44689, 44693, 44697, 44701, 44705, 44709, 44713, 44717, 44721, 44725,
-    44729, 44733, 44737, 44741, 44745, 44749, 44753, 44758, 44762, 44767,
-    44771, 44776, 44780, 44785, 44789, 44795, 44800, 44804, 44809, 44813,
-    44818, 44822, 44827, 44831, 44836, 44840, 44845, 44849, 44854, 44858,
-    44864, 44870, 44875, 44879, 44884, 44888, 44894, 44899, 44903, 44908,
-    44912, 44917, 44921, 44927, 44932, 44936, 44941, 44945, 44950, 44954,
-    44959, 44963, 44969, 44974, 44978, 44983, 44987, 44993, 44998, 45002,
-    45007, 45011, 45016, 45020, 45025, 45029, 45034, 45038, 45044, 45049,
-    45053, 45059, 45064, 45068, 45074, 45079, 45083, 45088, 45092, 45097,
-    45101, 45107, 45113, 45119, 45125, 45131, 45137, 45143, 45149, 45154,
-    45158, 45163, 45167, 45173, 45178, 45182, 45187, 45191, 45196, 45200,
-    45205, 45209, 45214, 45218, 45223, 45227, 45232, 45236, 45242, 45247,
-    45251, 45256, 45260, 45266, 45272, 45277, 127, 63, 45281, 45283, 45287,
-    45291, 45295, 45300, 45304, 45308, 45313, 11153, 45318, 45324, 1677,
-    7181, 45330, 45333, 45338, 45342, 45347, 45351, 45355, 45360, 12233,
-    45364, 45368, 45372, 630, 45376, 18561, 45381, 45385, 45390, 45395,
-    45400, 45404, 45411, 45417, 45423, 31790, 45428, 45431, 45435, 45440,
-    45446, 45450, 45453, 45461, 45467, 45472, 45476, 45479, 45483, 45489,
-    45493, 45497, 3811, 3816, 15084, 45500, 45504, 45508, 45512, 45516,
-    45524, 45531, 45535, 15958, 45542, 45556, 45563, 45574, 361, 45579,
-    45583, 45589, 45601, 45607, 45613, 45618, 45624, 18613, 45628, 45632,
-    35727, 45641, 45647, 45656, 45660, 45664, 45669, 45675, 45680, 45684,
-    45689, 45693, 45697, 45704, 45710, 45715, 45726, 45741, 45756, 45771,
-    45787, 45805, 12140, 45819, 45826, 45832, 45836, 45839, 45848, 45853,
-    45857, 45865, 19242, 45873, 45877, 45887, 45898, 35617, 1042, 45911,
-    45920, 45938, 45957, 45966, 45974, 45982, 1690, 12342, 45986, 27374,
-    45989, 31556, 45994, 11478, 45999, 46005, 46010, 46016, 46021, 46027,
-    46032, 46038, 46043, 46049, 46055, 46061, 46066, 46022, 46028, 46070,
-    46033, 46039, 46044, 46075, 46050, 46056, 9184, 4434, 46081, 46089,
-    46093, 46096, 46103, 46107, 46112, 46117, 46124, 46130, 46136, 46141,
-    17850, 46145, 31573, 46149, 46153, 46157, 46164, 46170, 46174, 33931,
-    46183, 10351, 46187, 10780, 46190, 46197, 46203, 46207, 14381, 46214,
-    46220, 46225, 46232, 46239, 46246, 34730, 9081, 46253, 46260, 46267,
-    46273, 46278, 46285, 46296, 46302, 46307, 46312, 46317, 46321, 46326,
-    46333, 46023, 46337, 46347, 46356, 46367, 46373, 46381, 46388, 46393,
-    46398, 46403, 46408, 46413, 46417, 46421, 46428, 46434, 46442, 2416,
-    30582, 12245, 12257, 12262, 12268, 46451, 12273, 12278, 12284, 46456,
-    46466, 46470, 12289, 46475, 20484, 46478, 46483, 46487, 46491, 46502,
-    46510, 42204, 46518, 46523, 46530, 46537, 46541, 46544, 46552, 12153,
-    46559, 46562, 46568, 46578, 6767, 46587, 46592, 46598, 46602, 46610,
-    46614, 46624, 46630, 46635, 46646, 46655, 46664, 46673, 46682, 46691,
-    46700, 46709, 46715, 46721, 46726, 46732, 46738, 46744, 46749, 46752,
-    46759, 46765, 46769, 46774, 46781, 46788, 46792, 46795, 46805, 46818,
-    46827, 46836, 46847, 46860, 46872, 46883, 46892, 46903, 46908, 46917,
-    46922, 12294, 46928, 46935, 46943, 46950, 46955, 46960, 31836, 46964,
-    46971, 4374, 25, 46975, 46980, 20333, 46984, 46987, 46990, 34122, 46994,
-    34739, 47002, 47006, 47010, 47013, 47019, 47025, 47030, 37782, 47039,
-    47047, 47053, 47060, 34105, 47064, 34342, 47068, 47077, 47081, 47089,
-    47095, 47101, 47106, 47110, 34765, 47116, 47119, 47127, 47135, 47143,
-    4772, 47149, 47153, 47157, 47162, 47169, 47175, 47180, 47185, 47189,
-    47195, 47200, 47206, 4662, 820, 47213, 47217, 47220, 47232, 47239, 47244,
-    18434, 47248, 47256, 47264, 47272, 47280, 47287, 47295, 47303, 47310,
-    47318, 47326, 47334, 47342, 47350, 47358, 47366, 47374, 47382, 47390,
-    47398, 47405, 47413, 47421, 47429, 47437, 47445, 47453, 47461, 47469,
-    47477, 47485, 47493, 47501, 47509, 47517, 47525, 47533, 47541, 47549,
-    47557, 47564, 47572, 47579, 47587, 47595, 47603, 47611, 47619, 47627,
-    47635, 47643, 47654, 26794, 47659, 47662, 47669, 47673, 47679, 47683,
-    47689, 47694, 47700, 47705, 47710, 47714, 47718, 47725, 47733, 47738,
-    47743, 47753, 47759, 47772, 47778, 47784, 47790, 47793, 47800, 47805,
-    4700, 47811, 4869, 965, 47816, 47819, 47822, 47825, 37866, 37872, 47828,
-    37878, 37891, 37897, 37903, 47834, 37909, 37915, 47840, 47846, 10, 47854,
-    47861, 47865, 47869, 47877, 38726, 47881, 47885, 47892, 47897, 47901,
-    47906, 47912, 47917, 47923, 47928, 47932, 47936, 47940, 47945, 47949,
-    47954, 47958, 47962, 47969, 47974, 47978, 47982, 47987, 47991, 47996,
-    48000, 48004, 48009, 48015, 18743, 18748, 48020, 48024, 48027, 48033,
-    48037, 48041, 25750, 48046, 48050, 48056, 48063, 48069, 48074, 40797,
-    48084, 48089, 48097, 48101, 48104, 48108, 38741, 48116, 4738, 48121,
-    48126, 48130, 48135, 48139, 48144, 16026, 48155, 48159, 48162, 48166,
-    48174, 48179, 48183, 48188, 48193, 48197, 48201, 48205, 48208, 48212,
-    48215, 48220, 48225, 48230, 48235, 48240, 48245, 8664, 16042, 48250,
-    48253, 48259, 48264, 48270, 48275, 48281, 48286, 48292, 48297, 48303,
-    48309, 48315, 48320, 48324, 48328, 48339, 48347, 48354, 48360, 48365,
-    48376, 48386, 48392, 48397, 48404, 48413, 48429, 48445, 48455, 34007,
-    48462, 48466, 48471, 48476, 48480, 48484, 43937, 48490, 48495, 48499,
-    48506, 48511, 48516, 48520, 48523, 48527, 48533, 32802, 48537, 26108,
-    48542, 48549, 48557, 48563, 48569, 48576, 48584, 48590, 48594, 48599,
-    48605, 48613, 48618, 48622, 48631, 11134, 48639, 48643, 48651, 48658,
-    48663, 48668, 48673, 48677, 48680, 48686, 48690, 48693, 48697, 48704,
-    48709, 48716, 48720, 48726, 48730, 48736, 48741, 48746, 5107, 5114,
-    48751, 48760, 48768, 48773, 48779, 48791, 48804, 48818, 48825, 48831,
-    48837, 48842, 48850, 48853, 48855, 48866, 48878, 48889, 48904, 48921,
-    48941, 48963, 48970, 48977, 48984, 48990, 48994, 8663, 48997, 49001,
-    49005, 49010, 49014, 49018, 49021, 49025, 49039, 28019, 49058, 49071,
-    49084, 49097, 28037, 49112, 2808, 49127, 49133, 49137, 49147, 49151,
-    49155, 49160, 49164, 49171, 49176, 49180, 49187, 49193, 49198, 49204,
-    49214, 49226, 49237, 49242, 49249, 49253, 49257, 49260, 49268, 19263,
-    4141, 49273, 18782, 49286, 49293, 49300, 49306, 49310, 49314, 49319,
-    49325, 49330, 49336, 49340, 49344, 49347, 49352, 49356, 49361, 49366,
-    49371, 49376, 49381, 49386, 49391, 49396, 49401, 8727, 18793, 49406,
-    49410, 49416, 49425, 49430, 49439, 49446, 43768, 49452, 49457, 49461,
-    49468, 49473, 49480, 49488, 49494, 49498, 49501, 49505, 49510, 2886,
-    49517, 49524, 49528, 49531, 49536, 49541, 49547, 49552, 49557, 49561,
-    49566, 49576, 49581, 49587, 49592, 49599, 47234, 49605, 49611, 49619,
-    49629, 49634, 49639, 49643, 49648, 49653, 8167, 8179, 49658, 49661,
-    49668, 49674, 49683, 10268, 41421, 49691, 49695, 49699, 38789, 49707,
-    49718, 49726, 43985, 49733, 49738, 49743, 49754, 49761, 49772, 38813,
-    26125, 49780, 4652, 49785, 16459, 49791, 34096, 49797, 49802, 49812,
-    49821, 49828, 49834, 49838, 49841, 49848, 49854, 49861, 49867, 49877,
-    49885, 49891, 49897, 49902, 49906, 49913, 49918, 49924, 49931, 49937,
-    49006, 49942, 49946, 16501, 16510, 16519, 16528, 16537, 16566, 622,
-    16575, 49952, 49957, 49960, 49966, 49974, 1275, 49979, 49983, 49988,
-    49993, 49997, 50002, 50009, 50015, 50019, 50024, 50030, 50034, 37939,
-    50039, 50044, 50053, 50060, 50070, 50076, 34140, 50093, 50102, 50110,
-    50116, 50121, 50128, 50134, 50142, 50151, 50159, 50167, 50173, 50177,
-    50182, 50190, 35288, 38822, 50196, 50215, 19166, 50229, 50245, 50259,
-    50265, 50270, 50275, 50280, 50286, 38828, 50291, 50294, 50301, 50308,
-    50317, 50322, 50326, 423, 3176, 50333, 50338, 50343, 33196, 50131, 50347,
-    50355, 50360, 50368, 50372, 50375, 50380, 50386, 50392, 50397, 50401,
-    34213, 50404, 50409, 50413, 50416, 50421, 50425, 50430, 50435, 50439,
-    50444, 50448, 50455, 50459, 50463, 25746, 25757, 50468, 50473, 50479,
-    50484, 50490, 50496, 32758, 50501, 50505, 50508, 50514, 50519, 50524,
-    50529, 50534, 50539, 50544, 50549, 50554, 50560, 50566, 14569, 19473,
-    50571, 50576, 50581, 50586, 50591, 50596, 50601, 50606, 452, 68, 37956,
-    37961, 37966, 37972, 37977, 37982, 50611, 37986, 50615, 50619, 50623,
-    37991, 37997, 50637, 38008, 38013, 50645, 50650, 38019, 50655, 50660,
-    50669, 50674, 50679, 50688, 50694, 50700, 50706, 38036, 50719, 50728,
-    50734, 38040, 50738, 38045, 50743, 38050, 38055, 50746, 50751, 50755,
-    50761, 16267, 50768, 16277, 50775, 50780, 38060, 50784, 50789, 50794,
-    50799, 50804, 50808, 50813, 50818, 50824, 50829, 50834, 50840, 50846,
-    50851, 50855, 50860, 50865, 50870, 50874, 50879, 50884, 50889, 50895,
-    50901, 50907, 50912, 50916, 50921, 50925, 38064, 38069, 38074, 50929,
-    50933, 50938, 50942, 50954, 38079, 38085, 38091, 38103, 50960, 31616,
-    50964, 50969, 50973, 50978, 50985, 50990, 50995, 51000, 51004, 51008,
-    51018, 51023, 51028, 51032, 51042, 51046, 51049, 51057, 51062, 38151,
-    51066, 1375, 51072, 51077, 51083, 51091, 51095, 51104, 51112, 51116,
-    51120, 51128, 51134, 51142, 51158, 51163, 51167, 51171, 51175, 51180,
-    51186, 51201, 38188, 1685, 14601, 51205, 1254, 1269, 51217, 51225, 51232,
-    51237, 9230, 51244, 51249, 10765, 978, 2641, 12321, 51256, 10658, 51261,
-    51264, 51273, 1162, 51278, 49177, 51285, 51294, 51299, 51303, 51311,
-    51318, 27424, 2697, 51326, 12842, 51336, 51342, 2434, 2444, 51351, 51360,
-    51370, 51381, 3584, 41818, 51386, 4341, 4352, 9258, 1167, 51390, 51398,
-    51405, 51410, 51414, 51418, 51423, 29054, 49512, 12412, 51431, 51440,
-    51449, 51457, 51470, 51477, 51488, 51493, 51506, 51519, 51531, 51543,
-    51555, 51566, 51579, 51590, 51601, 51611, 51619, 51627, 51639, 51651,
-    51662, 51671, 51679, 51686, 51698, 51705, 51711, 51720, 51726, 51733,
-    51746, 51751, 51761, 51766, 51772, 51777, 32098, 51781, 48682, 51788,
-    51795, 51803, 51810, 2654, 51817, 51828, 51838, 51847, 51855, 51865,
-    51873, 51882, 51892, 51901, 51906, 51912, 51918, 4190, 51929, 51939,
-    51948, 51957, 51965, 51975, 51983, 51992, 51997, 52002, 52007, 1604, 47,
-    52015, 52023, 52034, 52045, 19877, 52055, 52059, 52066, 52072, 52077,
-    52081, 52092, 52102, 52111, 52122, 52127, 20306, 20311, 52134, 52143,
-    52148, 52158, 52163, 52171, 52179, 52186, 52192, 1566, 271, 52196, 52201,
-    52207, 46085, 52212, 52215, 2182, 2663, 52223, 52227, 52230, 1420, 52236,
-    16787, 1172, 52241, 52254, 2797, 2818, 52268, 52280, 52292, 2832, 2849,
-    2864, 2880, 2897, 52306, 52318, 2912, 52332, 1178, 1184, 1190, 12713,
-    52337, 52342, 52347, 52351, 52366, 52381, 52396, 52411, 52426, 52441,
-    52456, 52471, 52486, 52501, 52516, 52531, 52546, 52561, 52576, 52591,
-    52606, 52621, 52636, 52651, 52666, 52681, 52696, 52711, 52726, 52741,
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-    115796, 115800, 115805, 115812, 115817, 115821, 47780, 115829, 31207,
-    31216, 115835, 115841, 115847, 115852, 115856, 115859, 115869, 115878,
-    115883, 115889, 115896, 115902, 115906, 115914, 115919, 42445, 85210,
-    115923, 115931, 115938, 115944, 115951, 115956, 115963, 115968, 115972,
-    115978, 115983, 69106, 115989, 115995, 10386, 116000, 116005, 116009,
-    116014, 116019, 116024, 116028, 116033, 116038, 116044, 116049, 116054,
-    116060, 116066, 116071, 116075, 116080, 116085, 116090, 116094, 29316,
-    116099, 116104, 116110, 116116, 116122, 116127, 116131, 116136, 116141,
-    109915, 116146, 116151, 116156, 116161, 109979, 52813, 116166, 39749,
-    116174, 116178, 116186, 116194, 116205, 116210, 116214, 27294, 82608,
-    116219, 116225, 116230, 4649, 116240, 116247, 116252, 116260, 116269,
-    116274, 116278, 116283, 116287, 116295, 116303, 116310, 77470, 116316,
-    116324, 116331, 116342, 116348, 116354, 39759, 116357, 116364, 116372,
-    116377, 116381, 33589, 71792, 116387, 116392, 116399, 116404, 10275,
-    116408, 116416, 116423, 116430, 116439, 116446, 116452, 116466, 116474,
-    6724, 116236, 116480, 116485, 116491, 116495, 116498, 116506, 116513,
-    116518, 116531, 116538, 116544, 116548, 116556, 116561, 116568, 116574,
-    116579, 72070, 116584, 116587, 116596, 116603, 110187, 116609, 116612,
-    116620, 116626, 116635, 116645, 116655, 116664, 116675, 116683, 116694,
-    116699, 116703, 116708, 116712, 43191, 116720, 18771, 43200, 116725,
-    101706, 101722, 101738, 101754, 101770, 116730, 101802, 101818, 101834,
-    101850, 101962, 101978, 116734, 102010, 102026, 116738, 116742, 116746,
-    116750, 102266, 102298, 116754, 102330, 116758, 116762, 102474, 102490,
-    102506, 102522, 116766, 102586, 102602, 116770, 102730, 102746, 102762,
-    102778, 102794, 102810, 102826, 102842, 102858, 102874, 102986, 103002,
-    103018, 103034, 103050, 103066, 103082, 103098, 103114, 103130, 116774,
-    104922, 105034, 105098, 105114, 105130, 105146, 105162, 105178, 105290,
-    105306, 105322, 116778, 105370, 116782, 105402, 105418, 105434, 116786,
-    116791, 116796, 116801, 116806, 116811, 116816, 116820, 116824, 116829,
-    116834, 116838, 116843, 116848, 116852, 116857, 116862, 116867, 116872,
-    116876, 116881, 116886, 116890, 116895, 116899, 116903, 116907, 116911,
-    116916, 116920, 116924, 116928, 116932, 116936, 116940, 116944, 116948,
-    116952, 116957, 116962, 116967, 116972, 116977, 116982, 116987, 116992,
-    116997, 117002, 117006, 117010, 117014, 117018, 117022, 117026, 117031,
-    117035, 117040, 117044, 117049, 117054, 117058, 117062, 117067, 117071,
-    117075, 117079, 117083, 117087, 117091, 117095, 117099, 117103, 117107,
-    117111, 117115, 117119, 117123, 117128, 117133, 117137, 117141, 117145,
-    117149, 117153, 117157, 117162, 117166, 117170, 117174, 117178, 117182,
-    117186, 117191, 117195, 117200, 117204, 117208, 117212, 117216, 117220,
-    117224, 117228, 117232, 117236, 117240, 117244, 117249, 117253, 117257,
-    117261, 117265, 117269, 117273, 117277, 117281, 117285, 117289, 117293,
-    117298, 117302, 117306, 117311, 117316, 117320, 117324, 117328, 117332,
-    117336, 117340, 117344, 117348, 117353, 117357, 117362, 117366, 117371,
-    117375, 117380, 117384, 117390, 117395, 117399, 117404, 117408, 117413,
-    117417, 117422, 117426, 117431, 1429, 117435, 117439, 3042, 1705, 28453,
-    1602, 31143, 117443, 3051, 117447, 1276, 117452, 1218, 117456, 117460,
-    117464, 117468, 117472, 117476, 3075, 117480, 117488, 117495, 117502,
-    117516, 3079, 8044, 117525, 117533, 117540, 117551, 117560, 117564,
-    117571, 117583, 117596, 117609, 117620, 117625, 117632, 117644, 117648,
-    3083, 14185, 117658, 117663, 117672, 117682, 117687, 117696, 3087,
-    117704, 117708, 117713, 117720, 117726, 117731, 117740, 117748, 117760,
-    117770, 1223, 15645, 117783, 117787, 117793, 117807, 117819, 117831,
-    117839, 117849, 117858, 117867, 117876, 117884, 117895, 117903, 4657,
-    117913, 117924, 117933, 117939, 117954, 117961, 117967, 117972, 43334,
-    117977, 3111, 15649, 117981, 117986, 117993, 10206, 118002, 118008, 4695,
-    118018, 3116, 39121, 118027, 71682, 118034, 118038, 118044, 118055,
-    118061, 118066, 118073, 118079, 118087, 118094, 118100, 118111, 118127,
-    118137, 118146, 118157, 118166, 118173, 118179, 118189, 118197, 118203,
-    118218, 118224, 118229, 118233, 118240, 118248, 118252, 118255, 118261,
-    118268, 118274, 118282, 118291, 118299, 118305, 118314, 52116, 118328,
-    118333, 118339, 17732, 118344, 118357, 118369, 118378, 118386, 118393,
-    118397, 118401, 118404, 118411, 118418, 118426, 118434, 118443, 118451,
-    17631, 118459, 118464, 118468, 118480, 118487, 118494, 118503, 954,
-    118513, 118522, 118533, 3137, 118537, 118541, 118547, 118560, 118572,
-    118582, 118591, 118603, 32105, 118614, 118622, 118631, 118642, 118653,
-    118663, 118673, 118681, 118690, 118698, 13604, 118705, 118709, 118712,
-    118717, 118722, 118726, 118732, 1228, 118739, 118743, 14281, 118747,
-    118751, 118762, 118771, 118779, 118788, 118796, 118812, 118823, 118832,
-    118840, 118852, 118863, 118879, 118889, 118910, 118924, 118937, 118945,
-    118952, 8090, 118965, 118970, 118976, 6733, 118982, 118985, 118992,
-    119002, 9266, 119009, 119014, 119019, 119026, 119034, 119042, 119048,
-    119053, 119059, 119063, 119071, 119080, 119088, 119093, 119102, 119109,
-    11418, 11427, 119115, 119126, 119132, 119137, 119143, 3153, 3158, 119149,
-    1063, 119155, 119162, 119169, 119182, 119192, 119197, 2324, 87, 119205,
-    119212, 119217, 119225, 119235, 119244, 119250, 119259, 119267, 119277,
-    119281, 119285, 119290, 119294, 119306, 3181, 119314, 119322, 119327,
-    119338, 119349, 119361, 119372, 119382, 119391, 26013, 119396, 119402,
-    119407, 119417, 119427, 119432, 34323, 119438, 119443, 119452, 26035,
-    119456, 26046, 119461, 4783, 8, 119468, 119477, 119484, 119491, 119497,
-    119502, 119506, 119512, 34353, 119517, 119522, 72367, 119527, 119532,
-    119538, 119544, 119552, 119557, 119565, 119573, 119582, 119589, 119595,
-    119602, 119608, 119615, 119620, 47649, 52010, 119626, 119636, 1822, 32,
-    119643, 119648, 119661, 119666, 119674, 119679, 119685, 3207, 30884,
-    3221, 119690, 119698, 119705, 119710, 119715, 119724, 4340, 4351, 73711,
-    119732, 119736, 1629, 1862, 119741, 119746, 119753, 34774, 1866, 331,
-    119760, 119766, 119771, 3229, 119775, 119780, 119787, 1870, 119792,
-    119798, 119803, 119815, 6978, 119825, 119832, 1877, 119838, 119843,
-    119850, 119857, 119872, 119879, 119890, 119895, 119903, 2772, 119907,
-    119919, 119924, 119928, 119934, 34195, 2329, 119938, 119949, 119953,
-    119957, 119963, 119967, 119976, 119980, 119991, 119995, 2375, 38938,
-    119999, 120009, 120017, 3320, 120023, 120032, 120040, 10752, 120045,
-    120053, 120058, 120062, 120071, 120078, 120084, 3290, 17796, 120088,
-    120101, 44058, 120119, 120124, 120132, 120140, 120150, 11759, 15773,
-    120162, 120175, 120182, 120192, 120206, 120213, 120229, 120236, 120242,
-    26093, 14980, 120249, 120256, 120266, 120275, 52812, 120287, 120295,
-    52947, 120302, 120305, 120311, 120317, 120323, 120329, 120335, 120342,
-    120349, 120355, 120361, 120367, 120373, 120379, 120385, 120391, 120397,
-    120403, 120409, 120415, 120421, 120427, 120433, 120439, 120445, 120451,
-    120457, 120463, 120469, 120475, 120481, 120487, 120493, 120499, 120505,
-    120511, 120517, 120523, 120529, 120535, 120541, 120547, 120553, 120559,
-    120565, 120571, 120577, 120583, 120589, 120595, 120601, 120607, 120613,
-    120619, 120625, 120631, 120637, 120643, 120649, 120655, 120662, 120668,
-    120675, 120682, 120688, 120695, 120702, 120708, 120714, 120720, 120726,
-    120732, 120738, 120744, 120750, 120756, 120762, 120768, 120774, 120780,
-    120786, 120792, 3304, 10720, 120798, 120808, 120814, 120822, 120826,
-    117716, 3308, 120830, 114044, 25758, 4701, 4265, 120834, 3314, 120838,
-    120848, 120854, 120860, 120866, 120872, 120878, 120884, 120890, 120896,
-    120902, 120908, 120914, 120920, 120926, 120932, 120938, 120944, 120950,
-    120956, 120962, 120968, 120974, 120980, 120986, 120992, 120998, 121005,
-    121012, 121018, 121024, 121030, 121036, 121042, 121048, 1233, 121054,
-    121059, 121064, 121069, 121074, 121079, 121084, 121089, 121094, 121098,
-    121102, 121106, 121110, 121114, 121118, 121122, 121126, 121130, 121136,
-    121142, 121148, 121154, 121158, 121162, 121166, 121170, 121174, 121178,
-    121182, 121186, 121190, 121195, 121200, 121205, 121210, 121215, 121220,
-    121225, 121230, 121235, 121240, 121245, 121250, 121255, 121260, 121265,
-    121270, 121275, 121280, 121285, 121290, 121295, 121300, 121305, 121310,
-    121315, 121320, 121325, 121330, 121335, 121340, 121345, 121350, 121355,
-    121360, 121365, 121370, 121375, 121380, 121385, 121390, 121395, 121400,
-    121405, 121410, 121415, 121420, 121425, 121430, 121435, 121440, 121445,
-    121450, 121455, 121460, 121465, 121470, 121475, 121480, 121485, 121490,
-    121495, 121500, 121505, 121510, 121515, 121520, 121525, 121530, 121535,
-    121540, 121545, 121550, 121555, 121560, 121565, 121570, 121575, 121580,
-    121585, 121590, 121595, 121600, 121605, 121610, 121615, 121620, 121625,
-    121630, 121635, 121640, 121645, 121650, 121655, 121660, 121665, 121670,
-    121675, 121680, 121685, 121690, 121695, 121700, 121705, 121710, 121715,
-    121720, 121725, 121730, 121735, 121740, 121745, 121750, 121755, 121760,
-    121765, 121770, 121775, 121780, 121785, 121790, 121795, 121800, 121805,
-    121810, 121815, 121820, 121825, 121830, 121835, 121840, 121845, 121850,
-    121855, 121860, 121865, 121870, 121875, 121880, 121885, 121890, 121895,
-    121900, 121905, 121910, 121915, 121920, 121925, 121930, 121935, 121940,
-    121945, 121950, 121955, 121960, 121965, 121970, 121975, 121980, 121985,
-    121990, 121995, 122000, 122005, 122010, 122015, 122020, 122025, 122030,
-    122035, 122040, 122045, 122050, 122055, 122060, 122065, 122070, 122075,
-    122080, 122086, 122091, 122096, 122101, 122106, 122111, 122116, 122121,
-    122127, 122132, 122137, 122142, 122147, 122152, 122157, 122162, 122167,
-    122172, 122177, 122182, 122187, 122192, 122197, 122202, 122207, 122212,
-    122217, 122222, 122227, 122232, 122237, 122242, 122247, 122252, 122257,
-    122262, 122267, 122272, 122277, 122282, 122287, 122296, 122301, 122310,
-    122315, 122324, 122329, 122338, 122343, 122352, 122357, 122366, 122371,
-    122380, 122385, 122394, 122399, 122404, 122413, 122417, 122426, 122431,
-    122440, 122445, 122454, 122459, 122468, 122473, 122482, 122487, 122496,
-    122501, 122510, 122515, 122524, 122529, 122538, 122543, 122552, 122557,
-    122562, 122567, 122572, 122577, 122582, 122587, 122591, 122596, 122601,
-    122606, 122611, 122616, 122621, 122627, 122632, 122637, 122642, 122648,
-    122652, 122657, 122663, 122668, 122673, 122678, 122683, 122688, 122693,
-    122698, 122703, 122708, 122713, 122719, 122724, 122729, 122734, 122740,
-    122745, 122750, 122755, 122760, 122766, 122771, 122776, 122781, 122786,
-    122791, 122797, 122802, 122807, 122812, 122817, 122822, 122827, 122832,
-    122837, 122842, 122847, 122852, 122857, 122862, 122867, 122872, 122877,
-    122882, 122887, 122892, 122897, 122902, 122907, 122912, 122918, 122924,
-    122930, 122935, 122940, 122945, 122950, 122956, 122962, 122968, 122973,
-    122978, 122983, 122989, 122994, 122999, 123004, 123009, 123014, 123019,
-    123024, 123029, 123034, 123039, 123044, 123049, 123054, 123059, 123064,
-    123069, 123075, 123081, 123087, 123092, 123097, 123102, 123107, 123113,
-    123119, 123125, 123130, 123135, 123140, 123145, 123150, 123155, 123160,
-    123165, 123170, 19463, 123175, 123181, 123186, 123191, 123196, 123201,
-    123206, 123212, 123217, 123222, 123227, 123232, 123237, 123243, 123248,
-    123253, 123258, 123263, 123268, 123273, 123278, 123283, 123288, 123293,
-    123298, 123303, 123308, 123313, 123318, 123323, 123328, 123333, 123338,
-    123343, 123348, 123353, 123359, 123364, 123369, 123374, 123379, 123384,
-    123389, 123394, 123399, 123404, 123409, 123414, 123419, 123424, 123429,
-    123434, 123439, 123444, 123449, 123454, 123459, 123464, 123469, 123474,
-    123479, 123484, 123489, 123494, 123499, 123504, 123509, 123514, 123519,
-    123524, 123529, 123534, 123539, 123544, 123549, 123554, 123559, 123565,
-    123570, 123575, 123580, 123585, 123590, 123595, 123600, 123605, 123610,
-    123615, 123620, 123626, 123631, 123637, 123642, 123647, 123652, 123657,
-    123662, 123667, 123673, 123678, 123683, 123689, 123694, 123699, 123704,
-    123709, 123714, 123720, 123726, 123731, 123736, 14614, 123741, 123746,
-    123751, 123756, 123761, 123766, 123771, 123776, 123781, 123786, 123791,
-    123796, 123801, 123806, 123811, 123816, 123821, 123826, 123831, 123836,
-    123841, 123846, 123851, 123856, 123861, 123866, 123871, 123876, 123881,
-    123886, 123891, 123896, 123901, 123906, 123911, 123916, 123921, 123926,
-    123931, 123936, 123941, 123946, 123951, 123956, 123961, 123966, 123971,
-    123976, 123981, 123986, 123991, 123996, 124001, 124006, 124011, 124016,
-    124021, 124026, 124031, 124036, 124041, 124046, 124051, 124056, 124061,
-    124067, 124072, 124077, 124082, 124087, 124093, 124098, 124103, 124108,
-    124113, 124118, 124123, 124129, 124134, 124139, 124144, 124149, 124154,
-    124160, 124165, 124170, 124175, 124180, 124185, 124191, 124196, 124201,
-    124206, 124211, 124216, 124222, 124228, 124233, 124238, 124243, 124249,
-    124255, 124261, 124266, 124271, 124277, 124283, 124288, 124294, 124300,
-    124306, 124311, 124316, 124322, 124327, 124333, 124338, 124344, 124353,
-    124358, 124363, 124369, 124374, 124380, 124385, 124390, 124395, 124400,
-    124405, 124410, 124415, 124420, 124425, 124430, 124435, 124440, 124445,
-    124450, 124455, 124460, 124465, 124470, 124475, 124480, 124485, 124490,
-    124495, 124500, 124505, 124510, 124515, 124520, 124525, 124530, 124535,
-    124541, 124547, 124553, 124558, 124563, 124568, 124573, 124578, 124583,
-    124588, 124593, 124598, 124603, 124608, 124613, 124618, 124623, 124628,
-    124633, 124638, 124643, 124648, 124653, 124659, 124665, 124670, 124676,
-    124681, 124686, 124692, 124697, 124703, 124708, 124714, 124719, 124725,
-    124730, 124736, 124741, 124746, 124751, 124756, 124761, 124766, 124771,
-    120849, 120855, 120861, 120867, 124777, 120873, 120879, 124783, 120885,
-    120891, 120897, 120903, 120909, 120915, 120921, 120927, 120933, 124789,
-    120939, 120945, 120951, 124795, 120957, 120963, 120969, 120975, 124801,
-    120981, 120987, 120993, 121013, 124807, 124813, 121019, 124819, 121025,
-    121031, 121037, 121043, 121049, 124825, 3331, 3336, 124830, 3351, 3356,
-    3361, 124835, 124838, 124844, 124850, 124857, 124862, 124867, 2380,
+/* name->code dictionary */
+static const unsigned char packed_name_dawg[] = {
+    228, 174, 4, 250, 2, 65, 206, 254, 2, 66, 222, 254, 2, 67, 198, 245, 4,
+    68, 222, 134, 1, 69, 250, 151, 1, 70, 206, 52, 71, 186, 154, 1, 72, 242,
+    223, 1, 73, 146, 65, 74, 138, 23, 75, 230, 134, 1, 76, 146, 130, 3, 77,
+    162, 200, 3, 78, 162, 107, 79, 226, 124, 80, 128, 159, 1, 2, 81, 85, 194,
+    7, 82, 182, 169, 1, 83, 166, 175, 4, 84, 170, 203, 2, 85, 222, 90, 86,
+    182, 80, 87, 182, 111, 88, 254, 4, 89, 179, 48, 90, 182, 40, 222, 2, 67,
+    238, 1, 68, 182, 10, 69, 172, 5, 4, 72, 79, 77, 32, 244, 6, 7, 73, 82,
+    80, 76, 65, 78, 69, 82, 76, 210, 32, 77, 198, 1, 78, 142, 26, 80, 142,
+    20, 82, 158, 136, 2, 83, 210, 2, 84, 70, 85, 214, 1, 86, 172, 213, 11, 4,
+    70, 71, 72, 65, 206, 192, 9, 66, 220, 219, 2, 9, 75, 84, 73, 69, 83, 69,
+    76, 83, 75, 164, 187, 2, 2, 81, 85, 199, 135, 10, 88, 18, 132, 1, 2, 67,
+    79, 46, 75, 20, 5, 85, 84, 69, 32, 65, 140, 230, 16, 6, 84, 73, 86, 65,
+    84, 69, 225, 150, 22, 5, 32, 67, 85, 82, 82, 4, 162, 185, 25, 85, 237,
+    182, 13, 2, 82, 68, 5, 147, 175, 33, 78, 4, 178, 207, 34, 67, 167, 207,
+    3, 78, 188, 1, 232, 1, 4, 76, 65, 77, 32, 242, 7, 77, 216, 141, 13, 7,
+    72, 69, 83, 73, 86, 69, 32, 168, 151, 4, 19, 68, 82, 69, 83, 83, 69, 68,
+    32, 84, 79, 32, 84, 72, 69, 32, 83, 85, 66, 74, 234, 178, 13, 85, 161,
+    186, 1, 6, 73, 32, 83, 72, 65, 75, 176, 1, 218, 1, 67, 44, 4, 83, 77, 65,
+    76, 168, 4, 7, 71, 69, 77, 73, 78, 65, 84, 116, 8, 73, 78, 73, 84, 73,
+    65, 76, 32, 38, 78, 178, 209, 2, 72, 220, 244, 22, 4, 65, 76, 73, 70, 0,
+    5, 86, 79, 87, 69, 76, 131, 130, 12, 68, 70, 40, 5, 65, 80, 73, 84, 65,
+    215, 4, 79, 68, 45, 9, 76, 32, 76, 69, 84, 84, 69, 82, 32, 68, 142, 2,
+    68, 38, 71, 34, 74, 2, 77, 22, 75, 46, 78, 42, 83, 210, 158, 29, 81, 190,
+    205, 4, 76, 130, 40, 67, 202, 154, 4, 90, 212, 7, 2, 65, 76, 170, 2, 66,
+    2, 89, 146, 1, 87, 182, 89, 84, 150, 14, 80, 158, 20, 70, 2, 72, 2, 82,
+    2, 86, 186, 2, 69, 2, 73, 2, 79, 3, 85, 4, 250, 186, 5, 65, 247, 251, 33,
+    72, 4, 174, 162, 39, 66, 215, 22, 65, 2, 171, 182, 38, 73, 6, 194, 183,
+    38, 65, 154, 98, 80, 191, 28, 72, 6, 206, 232, 38, 85, 158, 77, 72, 3,
+    89, 4, 188, 181, 2, 6, 73, 78, 78, 89, 73, 73, 135, 128, 37, 72, 4, 40,
+    4, 69, 32, 67, 79, 151, 206, 38, 73, 2, 173, 174, 38, 13, 78, 83, 79, 78,
+    65, 78, 84, 32, 77, 79, 68, 73, 70, 4, 218, 222, 32, 69, 191, 141, 4, 81,
+    4, 166, 151, 25, 65, 199, 185, 10, 85, 4, 182, 215, 26, 69, 185, 202, 11,
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+    83, 84, 86, 69, 78, 78, 89, 32, 75, 76, 2, 195, 34, 73, 2, 203, 34, 68,
+    2, 11, 78, 2, 231, 36, 85, 2, 11, 73, 2, 147, 34, 84, 10, 78, 84, 38, 83,
+    240, 3, 5, 77, 82, 65, 67, 72, 145, 14, 4, 66, 79, 82, 90, 4, 32, 3, 82,
+    69, 83, 251, 1, 73, 2, 21, 3, 86, 69, 84, 2, 231, 17, 76, 14, 76, 4, 72,
+    65, 77, 73, 18, 76, 40, 3, 79, 66, 89, 16, 2, 82, 89, 87, 85, 2, 219, 3,
+    76, 2, 11, 89, 2, 11, 85, 2, 151, 33, 67, 2, 223, 31, 76, 6, 28, 2, 85,
+    75, 219, 32, 90, 5, 21, 3, 32, 84, 73, 2, 11, 75, 2, 251, 15, 72, 2, 11,
+    70, 2, 11, 73, 2, 11, 83, 2, 215, 30, 77, 11, 11, 32, 8, 44, 7, 75, 76,
+    89, 85, 67, 72, 69, 83, 80, 6, 64, 9, 78, 69, 80, 79, 83, 84, 79, 89, 65,
+    14, 80, 163, 14, 86, 2, 39, 78, 2, 25, 4, 79, 86, 79, 68, 2, 143, 14, 78,
+    2, 223, 22, 77, 14, 40, 2, 66, 76, 41, 4, 83, 79, 75, 65, 2, 11, 65, 2,
+    11, 75, 2, 243, 30, 79, 13, 11, 32, 10, 30, 75, 142, 26, 84, 39, 83, 6,
+    104, 11, 76, 89, 85, 67, 72, 69, 86, 65, 89, 65, 32, 185, 25, 10, 82, 89,
+    85, 75, 79, 86, 65, 89, 65, 32, 4, 202, 16, 78, 251, 8, 83, 14, 58, 65,
+    88, 8, 69, 82, 69, 86, 79, 68, 75, 65, 27, 79, 6, 44, 3, 82, 65, 75, 222,
+    19, 76, 211, 5, 85, 2, 11, 76, 2, 11, 73, 2, 171, 28, 84, 5, 153, 15, 2,
+    32, 78, 4, 68, 5, 68, 67, 72, 65, 83, 245, 9, 7, 76, 75, 85, 76, 73, 90,
+    77, 2, 11, 72, 2, 219, 4, 73, 4, 64, 11, 69, 86, 69, 82, 83, 69, 68, 32,
+    67, 72, 69, 139, 26, 79, 2, 25, 4, 76, 89, 85, 83, 2, 215, 17, 84, 126,
+    96, 9, 75, 65, 77, 69, 89, 84, 83, 65, 32, 148, 2, 8, 76, 79, 90, 72, 73,
+    84, 73, 69, 119, 84, 22, 128, 1, 13, 68, 86, 79, 69, 67, 72, 69, 76, 78,
+    65, 89, 65, 32, 44, 7, 75, 76, 89, 85, 67, 72, 69, 74, 84, 218, 18, 77,
+    119, 83, 8, 218, 10, 75, 110, 78, 178, 8, 80, 75, 83, 6, 40, 5, 86, 65,
+    89, 65, 32, 243, 10, 78, 4, 178, 15, 84, 183, 4, 83, 4, 162, 15, 73, 147,
+    4, 82, 9, 11, 32, 6, 48, 2, 83, 32, 25, 6, 90, 65, 75, 82, 89, 84, 4,
+    166, 4, 75, 95, 90, 2, 11, 79, 2, 211, 22, 69, 96, 92, 4, 65, 84, 89, 65,
+    172, 4, 6, 79, 80, 73, 84, 83, 65, 189, 1, 5, 82, 69, 76, 65, 32, 23, 11,
+    32, 20, 76, 2, 83, 32, 236, 2, 9, 90, 65, 75, 82, 89, 84, 65, 89, 65,
+    159, 5, 78, 14, 160, 1, 14, 68, 86, 85, 77, 89, 65, 32, 90, 65, 80, 89,
+    65, 84, 89, 28, 7, 75, 82, 89, 90, 72, 69, 77, 24, 2, 82, 79, 17, 8, 90,
+    65, 80, 89, 65, 84, 79, 89, 2, 11, 77, 2, 215, 19, 73, 5, 189, 1, 2, 32,
+    73, 2, 203, 2, 71, 7, 21, 3, 32, 73, 32, 4, 54, 75, 37, 9, 80, 79, 68,
+    67, 72, 65, 83, 72, 73, 2, 11, 82, 2, 21, 3, 89, 90, 72, 2, 211, 1, 69,
+    5, 17, 2, 32, 83, 2, 17, 2, 32, 90, 2, 29, 5, 65, 80, 89, 65, 84, 2, 11,
+    79, 2, 199, 17, 89, 7, 11, 32, 4, 68, 6, 83, 32, 79, 67, 72, 75, 29, 7,
+    87, 73, 84, 72, 32, 83, 79, 2, 11, 79, 2, 215, 16, 77, 2, 45, 9, 82, 79,
+    67, 72, 89, 65, 32, 78, 79, 2, 11, 90, 2, 163, 7, 72, 68, 140, 1, 9, 68,
+    86, 79, 69, 67, 72, 69, 76, 78, 162, 1, 75, 78, 78, 174, 1, 71, 152, 3,
+    8, 77, 82, 65, 67, 72, 78, 79, 84, 42, 80, 75, 84, 10, 18, 79, 71, 65, 6,
+    64, 7, 80, 79, 86, 79, 68, 78, 65, 189, 5, 4, 75, 82, 89, 90, 4, 17, 2,
+    89, 65, 5, 17, 2, 32, 75, 2, 145, 5, 4, 76, 89, 85, 67, 26, 48, 6, 76,
+    89, 85, 67, 72, 69, 77, 2, 82, 89, 4, 22, 78, 203, 6, 80, 2, 157, 8, 9,
+    69, 80, 79, 83, 84, 79, 89, 65, 78, 22, 48, 7, 85, 75, 79, 86, 65, 89,
+    65, 195, 3, 90, 21, 11, 32, 18, 54, 71, 236, 2, 5, 84, 82, 89, 65, 83,
+    179, 2, 80, 14, 21, 3, 82, 79, 77, 14, 32, 4, 78, 65, 89, 65, 47, 79, 5,
+    237, 1, 7, 32, 87, 73, 84, 72, 32, 83, 10, 92, 10, 75, 82, 89, 90, 72,
+    69, 86, 65, 89, 65, 17, 9, 80, 79, 86, 79, 68, 78, 65, 89, 65, 5, 175, 2,
+    32, 7, 33, 6, 32, 87, 73, 84, 72, 32, 4, 24, 2, 68, 79, 23, 83, 2, 41, 2,
+    85, 66, 2, 21, 3, 73, 78, 71, 2, 133, 6, 6, 76, 69, 32, 90, 65, 80, 2,
+    175, 6, 75, 2, 237, 5, 3, 72, 69, 86, 2, 11, 73, 2, 11, 75, 2, 187, 5,
+    72, 6, 22, 79, 187, 3, 82, 4, 28, 2, 76, 85, 187, 1, 86, 2, 163, 1, 80,
+    8, 80, 5, 82, 89, 65, 83, 79, 153, 2, 10, 73, 75, 72, 65, 89, 65, 32, 80,
+    85, 84, 6, 62, 80, 44, 4, 83, 84, 82, 69, 173, 1, 4, 71, 76, 65, 83, 2,
+    17, 2, 79, 86, 2, 193, 1, 2, 79, 68, 2, 171, 1, 76, 16, 88, 12, 75, 76,
+    89, 85, 67, 72, 69, 86, 65, 89, 65, 32, 38, 77, 46, 80, 38, 84, 39, 83,
+    8, 34, 77, 46, 80, 38, 84, 39, 83, 2, 25, 4, 82, 65, 67, 72, 2, 247, 1,
+    78, 2, 11, 82, 2, 205, 1, 2, 79, 83, 2, 11, 82, 2, 11, 69, 2, 11, 83, 2,
+    157, 1, 4, 86, 69, 84, 76, 6, 30, 65, 121, 3, 77, 69, 89, 4, 32, 4, 78,
+    79, 90, 72, 31, 80, 2, 11, 69, 2, 151, 3, 75, 2, 17, 2, 89, 65, 2, 11,
+    84, 2, 11, 65, 2, 35, 89, 2, 11, 84, 2, 11, 83, 2, 183, 2, 65, 10, 108,
+    11, 68, 73, 82, 69, 67, 84, 73, 79, 78, 32, 70, 28, 3, 75, 82, 89, 28, 5,
+    76, 69, 86, 69, 76, 35, 82, 2, 11, 76, 2, 159, 1, 73, 2, 11, 90, 2, 143,
+    1, 72, 4, 11, 45, 4, 114, 50, 3, 51, 2, 11, 79, 2, 83, 71, 8, 26, 78, 34,
+    83, 15, 74, 4, 18, 66, 27, 74, 2, 11, 83, 2, 11, 80, 3, 0,
 };
 
-/* code->name phrasebook */
-#define phrasebook_shift 7
-#define phrasebook_short 190
-static const unsigned char phrasebook[] = {
-    0, 201, 247, 233, 216, 77, 207, 252, 77, 31, 56, 236, 155, 56, 210, 13,
-    56, 251, 137, 251, 49, 45, 210, 113, 50, 210, 113, 250, 193, 108, 56,
-    242, 74, 228, 87, 232, 80, 201, 63, 202, 23, 17, 191, 77, 17, 107, 17,
-    109, 17, 138, 17, 134, 17, 149, 17, 169, 17, 175, 17, 171, 17, 178, 242,
-    83, 204, 25, 219, 180, 56, 234, 43, 56, 230, 204, 56, 208, 13, 77, 242,
-    72, 250, 182, 8, 6, 1, 65, 8, 6, 1, 250, 120, 8, 6, 1, 247, 193, 8, 6, 1,
-    238, 127, 8, 6, 1, 71, 8, 6, 1, 233, 175, 8, 6, 1, 232, 51, 8, 6, 1, 230,
-    116, 8, 6, 1, 68, 8, 6, 1, 223, 35, 8, 6, 1, 222, 152, 8, 6, 1, 172, 8,
-    6, 1, 218, 168, 8, 6, 1, 215, 61, 8, 6, 1, 74, 8, 6, 1, 210, 236, 8, 6,
-    1, 208, 104, 8, 6, 1, 146, 8, 6, 1, 206, 8, 8, 6, 1, 200, 43, 8, 6, 1,
-    66, 8, 6, 1, 196, 12, 8, 6, 1, 193, 224, 8, 6, 1, 192, 235, 8, 6, 1, 192,
-    159, 8, 6, 1, 191, 166, 45, 51, 248, 53, 207, 19, 202, 23, 50, 51, 248,
-    53, 243, 2, 252, 60, 130, 219, 112, 230, 211, 252, 60, 8, 2, 1, 65, 8, 2,
-    1, 250, 120, 8, 2, 1, 247, 193, 8, 2, 1, 238, 127, 8, 2, 1, 71, 8, 2, 1,
-    233, 175, 8, 2, 1, 232, 51, 8, 2, 1, 230, 116, 8, 2, 1, 68, 8, 2, 1, 223,
-    35, 8, 2, 1, 222, 152, 8, 2, 1, 172, 8, 2, 1, 218, 168, 8, 2, 1, 215, 61,
-    8, 2, 1, 74, 8, 2, 1, 210, 236, 8, 2, 1, 208, 104, 8, 2, 1, 146, 8, 2, 1,
-    206, 8, 8, 2, 1, 200, 43, 8, 2, 1, 66, 8, 2, 1, 196, 12, 8, 2, 1, 193,
-    224, 8, 2, 1, 192, 235, 8, 2, 1, 192, 159, 8, 2, 1, 191, 166, 45, 238,
-    171, 248, 53, 81, 219, 112, 50, 238, 171, 248, 53, 198, 152, 213, 37,
-    201, 247, 223, 93, 233, 216, 77, 247, 24, 56, 209, 8, 56, 238, 170, 56,
-    192, 71, 56, 248, 22, 164, 205, 54, 56, 237, 42, 239, 6, 56, 233, 40,
-    211, 50, 223, 144, 219, 219, 55, 251, 116, 207, 252, 77, 213, 12, 56,
-    202, 32, 228, 88, 207, 78, 56, 217, 146, 237, 125, 56, 209, 80, 56, 200,
-    182, 109, 200, 182, 138, 252, 47, 252, 60, 216, 91, 56, 209, 142, 56, 82,
-    236, 140, 247, 35, 200, 182, 107, 217, 40, 211, 50, 223, 144, 206, 203,
-    55, 251, 116, 207, 252, 77, 193, 246, 232, 118, 91, 208, 22, 193, 246,
-    232, 118, 91, 230, 70, 193, 246, 232, 118, 115, 208, 20, 223, 93, 208,
-    13, 77, 8, 6, 1, 42, 4, 230, 210, 8, 6, 1, 42, 4, 252, 46, 8, 6, 1, 42,
-    4, 243, 1, 8, 6, 1, 42, 4, 198, 152, 8, 6, 1, 42, 4, 237, 42, 8, 6, 1,
-    42, 4, 206, 189, 58, 8, 6, 1, 252, 25, 8, 6, 1, 247, 194, 4, 247, 35, 8,
-    6, 1, 235, 15, 4, 230, 210, 8, 6, 1, 235, 15, 4, 252, 46, 8, 6, 1, 235,
-    15, 4, 243, 1, 8, 6, 1, 235, 15, 4, 237, 42, 8, 6, 1, 228, 74, 4, 230,
-    210, 8, 6, 1, 228, 74, 4, 252, 46, 8, 6, 1, 228, 74, 4, 243, 1, 8, 6, 1,
-    228, 74, 4, 237, 42, 8, 6, 1, 233, 248, 8, 6, 1, 215, 62, 4, 198, 152, 8,
-    6, 1, 187, 4, 230, 210, 8, 6, 1, 187, 4, 252, 46, 8, 6, 1, 187, 4, 243,
-    1, 8, 6, 1, 187, 4, 198, 152, 8, 6, 1, 187, 4, 237, 42, 215, 127, 56, 8,
-    6, 1, 187, 4, 106, 8, 6, 1, 126, 4, 230, 210, 8, 6, 1, 126, 4, 252, 46,
-    8, 6, 1, 126, 4, 243, 1, 8, 6, 1, 126, 4, 237, 42, 8, 6, 1, 192, 160, 4,
-    252, 46, 8, 6, 1, 198, 233, 8, 2, 1, 203, 127, 206, 8, 8, 2, 1, 42, 4,
-    230, 210, 8, 2, 1, 42, 4, 252, 46, 8, 2, 1, 42, 4, 243, 1, 8, 2, 1, 42,
-    4, 198, 152, 8, 2, 1, 42, 4, 237, 42, 8, 2, 1, 42, 4, 206, 189, 58, 8, 2,
-    1, 252, 25, 8, 2, 1, 247, 194, 4, 247, 35, 8, 2, 1, 235, 15, 4, 230, 210,
-    8, 2, 1, 235, 15, 4, 252, 46, 8, 2, 1, 235, 15, 4, 243, 1, 8, 2, 1, 235,
-    15, 4, 237, 42, 8, 2, 1, 228, 74, 4, 230, 210, 8, 2, 1, 228, 74, 4, 252,
-    46, 8, 2, 1, 228, 74, 4, 243, 1, 8, 2, 1, 228, 74, 4, 237, 42, 8, 2, 1,
-    233, 248, 8, 2, 1, 215, 62, 4, 198, 152, 8, 2, 1, 187, 4, 230, 210, 8, 2,
-    1, 187, 4, 252, 46, 8, 2, 1, 187, 4, 243, 1, 8, 2, 1, 187, 4, 198, 152,
-    8, 2, 1, 187, 4, 237, 42, 236, 200, 56, 8, 2, 1, 187, 4, 106, 8, 2, 1,
-    126, 4, 230, 210, 8, 2, 1, 126, 4, 252, 46, 8, 2, 1, 126, 4, 243, 1, 8,
-    2, 1, 126, 4, 237, 42, 8, 2, 1, 192, 160, 4, 252, 46, 8, 2, 1, 198, 233,
-    8, 2, 1, 192, 160, 4, 237, 42, 8, 6, 1, 42, 4, 217, 146, 8, 2, 1, 42, 4,
-    217, 146, 8, 6, 1, 42, 4, 248, 36, 8, 2, 1, 42, 4, 248, 36, 8, 6, 1, 42,
-    4, 211, 138, 8, 2, 1, 42, 4, 211, 138, 8, 6, 1, 247, 194, 4, 252, 46, 8,
-    2, 1, 247, 194, 4, 252, 46, 8, 6, 1, 247, 194, 4, 243, 1, 8, 2, 1, 247,
-    194, 4, 243, 1, 8, 6, 1, 247, 194, 4, 75, 58, 8, 2, 1, 247, 194, 4, 75,
-    58, 8, 6, 1, 247, 194, 4, 247, 92, 8, 2, 1, 247, 194, 4, 247, 92, 8, 6,
-    1, 238, 128, 4, 247, 92, 8, 2, 1, 238, 128, 4, 247, 92, 8, 6, 1, 238,
-    128, 4, 106, 8, 2, 1, 238, 128, 4, 106, 8, 6, 1, 235, 15, 4, 217, 146, 8,
-    2, 1, 235, 15, 4, 217, 146, 8, 6, 1, 235, 15, 4, 248, 36, 8, 2, 1, 235,
-    15, 4, 248, 36, 8, 6, 1, 235, 15, 4, 75, 58, 8, 2, 1, 235, 15, 4, 75, 58,
-    8, 6, 1, 235, 15, 4, 211, 138, 8, 2, 1, 235, 15, 4, 211, 138, 8, 6, 1,
-    235, 15, 4, 247, 92, 8, 2, 1, 235, 15, 4, 247, 92, 8, 6, 1, 232, 52, 4,
-    243, 1, 8, 2, 1, 232, 52, 4, 243, 1, 8, 6, 1, 232, 52, 4, 248, 36, 8, 2,
-    1, 232, 52, 4, 248, 36, 8, 6, 1, 232, 52, 4, 75, 58, 8, 2, 1, 232, 52, 4,
-    75, 58, 8, 6, 1, 232, 52, 4, 247, 35, 8, 2, 1, 232, 52, 4, 247, 35, 8, 6,
-    1, 230, 117, 4, 243, 1, 8, 2, 1, 230, 117, 4, 243, 1, 8, 6, 1, 230, 117,
-    4, 106, 8, 2, 1, 230, 117, 4, 106, 8, 6, 1, 228, 74, 4, 198, 152, 8, 2,
-    1, 228, 74, 4, 198, 152, 8, 6, 1, 228, 74, 4, 217, 146, 8, 2, 1, 228, 74,
-    4, 217, 146, 8, 6, 1, 228, 74, 4, 248, 36, 8, 2, 1, 228, 74, 4, 248, 36,
-    8, 6, 1, 228, 74, 4, 211, 138, 8, 2, 1, 228, 74, 4, 211, 138, 8, 6, 1,
-    228, 74, 4, 75, 58, 8, 2, 1, 236, 139, 68, 8, 6, 34, 223, 197, 8, 2, 34,
-    223, 197, 8, 6, 1, 223, 36, 4, 243, 1, 8, 2, 1, 223, 36, 4, 243, 1, 8, 6,
-    1, 222, 153, 4, 247, 35, 8, 2, 1, 222, 153, 4, 247, 35, 8, 2, 1, 221, 8,
-    8, 6, 1, 220, 143, 4, 252, 46, 8, 2, 1, 220, 143, 4, 252, 46, 8, 6, 1,
-    220, 143, 4, 247, 35, 8, 2, 1, 220, 143, 4, 247, 35, 8, 6, 1, 220, 143,
-    4, 247, 92, 8, 2, 1, 220, 143, 4, 247, 92, 8, 6, 1, 220, 143, 4, 82, 236,
-    140, 8, 2, 1, 220, 143, 4, 82, 236, 140, 8, 6, 1, 220, 143, 4, 106, 8, 2,
-    1, 220, 143, 4, 106, 8, 6, 1, 215, 62, 4, 252, 46, 8, 2, 1, 215, 62, 4,
-    252, 46, 8, 6, 1, 215, 62, 4, 247, 35, 8, 2, 1, 215, 62, 4, 247, 35, 8,
-    6, 1, 215, 62, 4, 247, 92, 8, 2, 1, 215, 62, 4, 247, 92, 8, 2, 1, 215,
-    62, 208, 233, 247, 205, 251, 49, 8, 6, 1, 234, 88, 8, 2, 1, 234, 88, 8,
-    6, 1, 187, 4, 217, 146, 8, 2, 1, 187, 4, 217, 146, 8, 6, 1, 187, 4, 248,
-    36, 8, 2, 1, 187, 4, 248, 36, 8, 6, 1, 187, 4, 55, 252, 46, 8, 2, 1, 187,
-    4, 55, 252, 46, 8, 6, 34, 211, 151, 8, 2, 34, 211, 151, 8, 6, 1, 207,
-    222, 4, 252, 46, 8, 2, 1, 207, 222, 4, 252, 46, 8, 6, 1, 207, 222, 4,
-    247, 35, 8, 2, 1, 207, 222, 4, 247, 35, 8, 6, 1, 207, 222, 4, 247, 92, 8,
-    2, 1, 207, 222, 4, 247, 92, 8, 6, 1, 206, 9, 4, 252, 46, 8, 2, 1, 206, 9,
-    4, 252, 46, 8, 6, 1, 206, 9, 4, 243, 1, 8, 2, 1, 206, 9, 4, 243, 1, 8, 6,
-    1, 206, 9, 4, 247, 35, 8, 2, 1, 206, 9, 4, 247, 35, 8, 6, 1, 206, 9, 4,
-    247, 92, 8, 2, 1, 206, 9, 4, 247, 92, 8, 6, 1, 200, 44, 4, 247, 35, 8, 2,
-    1, 200, 44, 4, 247, 35, 8, 6, 1, 200, 44, 4, 247, 92, 8, 2, 1, 200, 44,
-    4, 247, 92, 8, 6, 1, 200, 44, 4, 106, 8, 2, 1, 200, 44, 4, 106, 8, 6, 1,
-    126, 4, 198, 152, 8, 2, 1, 126, 4, 198, 152, 8, 6, 1, 126, 4, 217, 146,
-    8, 2, 1, 126, 4, 217, 146, 8, 6, 1, 126, 4, 248, 36, 8, 2, 1, 126, 4,
-    248, 36, 8, 6, 1, 126, 4, 206, 189, 58, 8, 2, 1, 126, 4, 206, 189, 58, 8,
-    6, 1, 126, 4, 55, 252, 46, 8, 2, 1, 126, 4, 55, 252, 46, 8, 6, 1, 126, 4,
-    211, 138, 8, 2, 1, 126, 4, 211, 138, 8, 6, 1, 193, 225, 4, 243, 1, 8, 2,
-    1, 193, 225, 4, 243, 1, 8, 6, 1, 192, 160, 4, 243, 1, 8, 2, 1, 192, 160,
-    4, 243, 1, 8, 6, 1, 192, 160, 4, 237, 42, 8, 6, 1, 191, 167, 4, 252, 46,
-    8, 2, 1, 191, 167, 4, 252, 46, 8, 6, 1, 191, 167, 4, 75, 58, 8, 2, 1,
-    191, 167, 4, 75, 58, 8, 6, 1, 191, 167, 4, 247, 92, 8, 2, 1, 191, 167, 4,
-    247, 92, 8, 2, 1, 179, 206, 8, 8, 2, 1, 78, 4, 106, 8, 6, 1, 78, 4, 102,
-    8, 6, 1, 78, 4, 198, 51, 8, 2, 1, 78, 4, 198, 51, 8, 6, 1, 163, 169, 8,
-    2, 1, 163, 169, 8, 6, 1, 211, 77, 74, 8, 6, 1, 247, 194, 4, 102, 8, 2, 1,
-    247, 194, 4, 102, 8, 6, 1, 252, 0, 238, 127, 8, 6, 1, 238, 128, 4, 102,
-    8, 6, 1, 238, 128, 4, 198, 51, 8, 2, 1, 238, 128, 4, 198, 51, 8, 2, 1,
-    153, 237, 106, 8, 6, 1, 207, 18, 71, 8, 6, 1, 205, 86, 8, 6, 1, 211, 77,
-    71, 8, 6, 1, 233, 176, 4, 102, 8, 2, 1, 233, 176, 4, 102, 8, 6, 1, 232,
-    52, 4, 102, 8, 6, 1, 231, 211, 8, 2, 1, 228, 126, 8, 6, 1, 223, 83, 8, 6,
-    1, 228, 74, 4, 106, 8, 6, 1, 222, 153, 4, 102, 8, 2, 1, 222, 153, 4, 102,
-    8, 2, 1, 220, 143, 4, 164, 8, 2, 1, 220, 33, 4, 106, 8, 6, 1, 153, 218,
-    168, 8, 6, 1, 215, 62, 4, 45, 102, 8, 2, 1, 215, 62, 4, 179, 50, 219,
-    212, 8, 6, 1, 187, 4, 82, 198, 152, 8, 6, 1, 187, 4, 228, 187, 8, 2, 1,
-    187, 4, 228, 187, 8, 6, 1, 211, 133, 8, 2, 1, 211, 133, 8, 6, 1, 210,
-    237, 4, 102, 8, 2, 1, 210, 237, 4, 102, 8, 1, 191, 228, 8, 6, 1, 163,
-    109, 8, 2, 1, 163, 109, 8, 6, 1, 234, 12, 8, 1, 207, 18, 234, 13, 219, 4,
-    8, 2, 1, 200, 44, 4, 210, 192, 102, 8, 6, 1, 200, 44, 4, 102, 8, 2, 1,
-    200, 44, 4, 102, 8, 6, 1, 200, 44, 4, 207, 24, 102, 8, 6, 1, 126, 4, 228,
-    187, 8, 2, 1, 126, 4, 228, 187, 8, 6, 1, 196, 70, 8, 6, 1, 196, 13, 4,
-    102, 8, 6, 1, 192, 160, 4, 102, 8, 2, 1, 192, 160, 4, 102, 8, 6, 1, 191,
-    167, 4, 106, 8, 2, 1, 191, 167, 4, 106, 8, 6, 1, 233, 178, 8, 6, 1, 233,
-    179, 207, 17, 8, 2, 1, 233, 179, 207, 17, 8, 2, 1, 233, 179, 4, 199, 215,
-    8, 1, 105, 4, 106, 8, 6, 1, 163, 149, 8, 2, 1, 163, 149, 8, 1, 223, 93,
-    231, 11, 201, 64, 4, 106, 8, 1, 192, 238, 8, 1, 237, 98, 242, 231, 8, 1,
-    220, 3, 242, 231, 8, 1, 251, 150, 242, 231, 8, 1, 207, 24, 242, 231, 8,
-    6, 1, 235, 37, 4, 247, 92, 8, 6, 1, 238, 128, 4, 2, 1, 191, 167, 4, 247,
-    92, 8, 2, 1, 235, 37, 4, 247, 92, 8, 6, 1, 219, 77, 8, 6, 1, 220, 143, 4,
-    2, 1, 223, 35, 8, 2, 1, 219, 77, 8, 6, 1, 213, 158, 8, 6, 1, 215, 62, 4,
-    2, 1, 223, 35, 8, 2, 1, 213, 158, 8, 6, 1, 42, 4, 247, 92, 8, 2, 1, 42,
-    4, 247, 92, 8, 6, 1, 228, 74, 4, 247, 92, 8, 2, 1, 228, 74, 4, 247, 92,
-    8, 6, 1, 187, 4, 247, 92, 8, 2, 1, 187, 4, 247, 92, 8, 6, 1, 126, 4, 247,
-    92, 8, 2, 1, 126, 4, 247, 92, 8, 6, 1, 126, 4, 237, 43, 23, 217, 146, 8,
-    2, 1, 126, 4, 237, 43, 23, 217, 146, 8, 6, 1, 126, 4, 237, 43, 23, 252,
-    46, 8, 2, 1, 126, 4, 237, 43, 23, 252, 46, 8, 6, 1, 126, 4, 237, 43, 23,
-    247, 92, 8, 2, 1, 126, 4, 237, 43, 23, 247, 92, 8, 6, 1, 126, 4, 237, 43,
-    23, 230, 210, 8, 2, 1, 126, 4, 237, 43, 23, 230, 210, 8, 2, 1, 153, 71,
-    8, 6, 1, 42, 4, 237, 43, 23, 217, 146, 8, 2, 1, 42, 4, 237, 43, 23, 217,
-    146, 8, 6, 1, 42, 4, 75, 93, 23, 217, 146, 8, 2, 1, 42, 4, 75, 93, 23,
-    217, 146, 8, 6, 1, 252, 26, 4, 217, 146, 8, 2, 1, 252, 26, 4, 217, 146,
-    8, 6, 1, 232, 52, 4, 106, 8, 2, 1, 232, 52, 4, 106, 8, 6, 1, 232, 52, 4,
-    247, 92, 8, 2, 1, 232, 52, 4, 247, 92, 8, 6, 1, 222, 153, 4, 247, 92, 8,
-    2, 1, 222, 153, 4, 247, 92, 8, 6, 1, 187, 4, 211, 138, 8, 2, 1, 187, 4,
-    211, 138, 8, 6, 1, 187, 4, 211, 139, 23, 217, 146, 8, 2, 1, 187, 4, 211,
-    139, 23, 217, 146, 8, 6, 1, 233, 179, 4, 247, 92, 8, 2, 1, 233, 179, 4,
-    247, 92, 8, 2, 1, 223, 36, 4, 247, 92, 8, 6, 1, 235, 36, 8, 6, 1, 238,
-    128, 4, 2, 1, 191, 166, 8, 2, 1, 235, 36, 8, 6, 1, 232, 52, 4, 252, 46,
-    8, 2, 1, 232, 52, 4, 252, 46, 8, 6, 1, 228, 123, 8, 6, 1, 192, 238, 8, 6,
-    1, 215, 62, 4, 230, 210, 8, 2, 1, 215, 62, 4, 230, 210, 8, 6, 1, 42, 4,
-    206, 189, 93, 23, 252, 46, 8, 2, 1, 42, 4, 206, 189, 93, 23, 252, 46, 8,
-    6, 1, 252, 26, 4, 252, 46, 8, 2, 1, 252, 26, 4, 252, 46, 8, 6, 1, 187, 4,
-    201, 28, 23, 252, 46, 8, 2, 1, 187, 4, 201, 28, 23, 252, 46, 8, 6, 1, 42,
-    4, 55, 230, 210, 8, 2, 1, 42, 4, 55, 230, 210, 8, 6, 1, 42, 4, 223, 93,
-    248, 36, 8, 2, 1, 42, 4, 223, 93, 248, 36, 8, 6, 1, 235, 15, 4, 55, 230,
-    210, 8, 2, 1, 235, 15, 4, 55, 230, 210, 8, 6, 1, 235, 15, 4, 223, 93,
-    248, 36, 8, 2, 1, 235, 15, 4, 223, 93, 248, 36, 8, 6, 1, 228, 74, 4, 55,
-    230, 210, 8, 2, 1, 228, 74, 4, 55, 230, 210, 8, 6, 1, 228, 74, 4, 223,
-    93, 248, 36, 8, 2, 1, 228, 74, 4, 223, 93, 248, 36, 8, 6, 1, 187, 4, 55,
-    230, 210, 8, 2, 1, 187, 4, 55, 230, 210, 8, 6, 1, 187, 4, 223, 93, 248,
-    36, 8, 2, 1, 187, 4, 223, 93, 248, 36, 8, 6, 1, 207, 222, 4, 55, 230,
-    210, 8, 2, 1, 207, 222, 4, 55, 230, 210, 8, 6, 1, 207, 222, 4, 223, 93,
-    248, 36, 8, 2, 1, 207, 222, 4, 223, 93, 248, 36, 8, 6, 1, 126, 4, 55,
-    230, 210, 8, 2, 1, 126, 4, 55, 230, 210, 8, 6, 1, 126, 4, 223, 93, 248,
-    36, 8, 2, 1, 126, 4, 223, 93, 248, 36, 8, 6, 1, 206, 9, 4, 242, 75, 60,
-    8, 2, 1, 206, 9, 4, 242, 75, 60, 8, 6, 1, 200, 44, 4, 242, 75, 60, 8, 2,
-    1, 200, 44, 4, 242, 75, 60, 8, 6, 1, 191, 248, 8, 2, 1, 191, 248, 8, 6,
-    1, 230, 117, 4, 247, 92, 8, 2, 1, 230, 117, 4, 247, 92, 8, 6, 1, 215, 62,
-    4, 179, 50, 219, 212, 8, 2, 1, 238, 128, 4, 238, 175, 8, 6, 1, 211, 19,
-    8, 2, 1, 211, 19, 8, 6, 1, 191, 167, 4, 102, 8, 2, 1, 191, 167, 4, 102,
-    8, 6, 1, 42, 4, 75, 58, 8, 2, 1, 42, 4, 75, 58, 8, 6, 1, 235, 15, 4, 247,
-    35, 8, 2, 1, 235, 15, 4, 247, 35, 8, 6, 1, 187, 4, 237, 43, 23, 217, 146,
-    8, 2, 1, 187, 4, 237, 43, 23, 217, 146, 8, 6, 1, 187, 4, 198, 153, 23,
-    217, 146, 8, 2, 1, 187, 4, 198, 153, 23, 217, 146, 8, 6, 1, 187, 4, 75,
-    58, 8, 2, 1, 187, 4, 75, 58, 8, 6, 1, 187, 4, 75, 93, 23, 217, 146, 8, 2,
-    1, 187, 4, 75, 93, 23, 217, 146, 8, 6, 1, 192, 160, 4, 217, 146, 8, 2, 1,
-    192, 160, 4, 217, 146, 8, 2, 1, 220, 143, 4, 238, 175, 8, 2, 1, 215, 62,
-    4, 238, 175, 8, 2, 1, 200, 44, 4, 238, 175, 8, 2, 1, 236, 139, 223, 35,
-    8, 2, 1, 237, 201, 237, 2, 8, 2, 1, 208, 34, 237, 2, 8, 6, 1, 42, 4, 106,
-    8, 6, 1, 247, 194, 4, 106, 8, 2, 1, 247, 194, 4, 106, 8, 6, 1, 220, 143,
-    4, 164, 8, 6, 1, 200, 44, 4, 237, 39, 106, 8, 2, 1, 206, 9, 4, 200, 146,
-    199, 215, 8, 2, 1, 191, 167, 4, 200, 146, 199, 215, 8, 6, 1, 231, 11,
-    201, 63, 8, 2, 1, 231, 11, 201, 63, 8, 6, 1, 78, 4, 106, 8, 6, 1, 126,
-    164, 8, 6, 1, 153, 196, 12, 8, 6, 1, 235, 15, 4, 106, 8, 2, 1, 235, 15,
-    4, 106, 8, 6, 1, 223, 36, 4, 106, 8, 2, 1, 223, 36, 4, 106, 8, 6, 1, 2,
-    208, 105, 4, 228, 251, 199, 215, 8, 2, 1, 208, 105, 4, 228, 251, 199,
-    215, 8, 6, 1, 207, 222, 4, 106, 8, 2, 1, 207, 222, 4, 106, 8, 6, 1, 192,
-    160, 4, 106, 8, 2, 1, 192, 160, 4, 106, 8, 2, 1, 153, 65, 8, 2, 1, 251,
-    160, 8, 2, 1, 153, 251, 160, 8, 2, 1, 78, 4, 102, 8, 2, 1, 211, 77, 74,
-    8, 2, 1, 247, 194, 4, 238, 175, 8, 2, 1, 238, 128, 4, 199, 215, 8, 2, 1,
-    238, 128, 4, 102, 8, 2, 1, 207, 18, 71, 8, 2, 1, 205, 86, 8, 2, 1, 205,
-    87, 4, 102, 8, 2, 1, 211, 77, 71, 8, 2, 1, 207, 18, 211, 77, 71, 8, 2, 1,
-    207, 18, 211, 77, 235, 15, 4, 102, 8, 2, 1, 242, 219, 207, 18, 211, 77,
-    71, 8, 2, 1, 236, 139, 223, 36, 4, 106, 8, 2, 1, 232, 52, 4, 102, 8, 2,
-    1, 27, 232, 51, 8, 1, 2, 6, 232, 51, 8, 2, 1, 231, 211, 8, 2, 1, 207,
-    140, 228, 187, 8, 2, 1, 153, 230, 116, 8, 2, 1, 230, 117, 4, 102, 8, 2,
-    1, 229, 197, 4, 102, 8, 2, 1, 228, 74, 4, 106, 8, 2, 1, 223, 83, 8, 1, 2,
-    6, 68, 8, 2, 1, 220, 143, 4, 82, 198, 152, 8, 2, 1, 220, 143, 4, 248,
-    231, 8, 2, 1, 220, 143, 4, 207, 24, 102, 8, 2, 1, 219, 162, 8, 2, 1, 153,
-    218, 168, 8, 2, 1, 153, 218, 169, 4, 179, 219, 212, 8, 2, 1, 218, 169, 4,
-    102, 8, 2, 1, 215, 62, 4, 45, 102, 8, 2, 1, 215, 62, 4, 207, 24, 102, 8,
-    1, 2, 6, 215, 61, 8, 2, 1, 249, 82, 74, 8, 1, 2, 6, 211, 151, 8, 2, 1,
-    242, 219, 211, 110, 8, 2, 1, 209, 211, 8, 2, 1, 153, 146, 8, 2, 1, 153,
-    207, 222, 4, 179, 219, 212, 8, 2, 1, 153, 207, 222, 4, 102, 8, 2, 1, 207,
-    222, 4, 179, 219, 212, 8, 2, 1, 207, 222, 4, 199, 215, 8, 2, 1, 207, 222,
-    4, 232, 233, 8, 2, 1, 207, 18, 207, 222, 4, 232, 233, 8, 1, 2, 6, 146, 8,
-    1, 2, 6, 223, 93, 146, 8, 2, 1, 206, 9, 4, 102, 8, 2, 1, 234, 12, 8, 2,
-    1, 236, 139, 223, 36, 4, 201, 28, 23, 102, 8, 2, 1, 201, 187, 207, 18,
-    234, 12, 8, 2, 1, 234, 13, 4, 238, 175, 8, 2, 1, 153, 200, 43, 8, 2, 1,
-    200, 44, 4, 207, 24, 102, 8, 2, 1, 126, 164, 8, 2, 1, 196, 70, 8, 2, 1,
-    196, 13, 4, 102, 8, 2, 1, 153, 196, 12, 8, 2, 1, 153, 193, 224, 8, 2, 1,
-    153, 192, 159, 8, 1, 2, 6, 192, 159, 8, 2, 1, 191, 167, 4, 207, 24, 102,
-    8, 2, 1, 191, 167, 4, 238, 175, 8, 2, 1, 233, 178, 8, 2, 1, 233, 179, 4,
-    238, 175, 8, 1, 231, 11, 201, 63, 8, 1, 209, 219, 195, 20, 232, 104, 8,
-    1, 223, 93, 231, 11, 201, 63, 8, 1, 201, 36, 247, 193, 8, 1, 248, 172,
-    242, 231, 8, 1, 2, 6, 250, 120, 8, 2, 1, 242, 219, 211, 77, 71, 8, 1, 2,
-    6, 232, 52, 4, 102, 8, 1, 2, 6, 230, 116, 8, 2, 1, 223, 36, 4, 238, 212,
-    8, 2, 1, 153, 222, 152, 8, 1, 2, 6, 172, 8, 2, 1, 208, 105, 4, 102, 8, 1,
-    231, 11, 201, 64, 4, 106, 8, 1, 207, 18, 231, 11, 201, 64, 4, 106, 8, 2,
-    1, 235, 37, 237, 2, 8, 2, 1, 237, 70, 237, 2, 8, 2, 1, 235, 37, 237, 3,
-    4, 238, 175, 8, 2, 1, 197, 170, 237, 2, 8, 2, 1, 199, 79, 237, 2, 8, 2,
-    1, 199, 152, 237, 3, 4, 238, 175, 8, 2, 1, 233, 37, 237, 2, 8, 2, 1, 218,
-    227, 237, 2, 8, 2, 1, 218, 170, 237, 2, 8, 1, 248, 172, 210, 12, 8, 1,
-    248, 180, 210, 12, 8, 2, 1, 153, 230, 117, 4, 232, 233, 8, 2, 1, 153,
-    230, 117, 4, 232, 234, 23, 199, 215, 52, 1, 2, 230, 116, 52, 1, 2, 230,
-    117, 4, 102, 52, 1, 2, 223, 35, 52, 1, 2, 146, 52, 1, 2, 153, 146, 52, 1,
-    2, 153, 207, 222, 4, 102, 52, 1, 2, 6, 223, 93, 146, 52, 1, 2, 193, 224,
-    52, 1, 2, 192, 159, 52, 1, 208, 215, 52, 1, 55, 208, 215, 52, 1, 153,
-    242, 74, 52, 1, 251, 49, 52, 1, 207, 18, 242, 74, 52, 1, 50, 132, 206,
-    188, 52, 1, 45, 132, 206, 188, 52, 1, 231, 11, 201, 63, 52, 1, 207, 18,
-    231, 11, 201, 63, 52, 1, 45, 250, 235, 52, 1, 50, 250, 235, 52, 1, 133,
-    250, 235, 52, 1, 144, 250, 235, 52, 1, 243, 2, 252, 60, 247, 92, 52, 1,
-    81, 219, 112, 52, 1, 217, 146, 52, 1, 252, 47, 252, 60, 52, 1, 230, 211,
-    252, 60, 52, 1, 130, 81, 219, 112, 52, 1, 130, 217, 146, 52, 1, 130, 230,
-    211, 252, 60, 52, 1, 130, 252, 47, 252, 60, 52, 1, 197, 238, 242, 83, 52,
-    1, 132, 197, 238, 242, 83, 52, 1, 247, 20, 50, 132, 206, 188, 52, 1, 247,
-    20, 45, 132, 206, 188, 52, 1, 133, 199, 228, 52, 1, 144, 199, 228, 52, 1,
-    108, 56, 52, 1, 216, 35, 56, 248, 36, 75, 58, 206, 189, 58, 211, 138, 2,
-    198, 152, 55, 252, 47, 252, 60, 52, 1, 207, 2, 102, 52, 1, 238, 218, 252,
-    60, 52, 1, 2, 231, 211, 52, 1, 2, 172, 52, 1, 2, 206, 8, 52, 1, 2, 192,
-    235, 52, 1, 2, 207, 18, 231, 11, 201, 63, 52, 1, 233, 200, 163, 164, 52,
-    1, 137, 163, 164, 52, 1, 216, 87, 163, 164, 52, 1, 130, 163, 164, 52, 1,
-    233, 199, 163, 164, 52, 1, 192, 22, 237, 95, 163, 77, 52, 1, 192, 107,
-    237, 95, 163, 77, 52, 1, 195, 18, 52, 1, 196, 109, 52, 1, 55, 251, 49,
-    52, 1, 130, 144, 250, 235, 52, 1, 130, 133, 250, 235, 52, 1, 130, 45,
-    250, 235, 52, 1, 130, 50, 250, 235, 52, 1, 130, 206, 188, 52, 1, 82, 230,
-    211, 252, 60, 52, 1, 82, 55, 230, 211, 252, 60, 52, 1, 82, 55, 252, 47,
-    252, 60, 52, 1, 130, 198, 152, 52, 1, 207, 147, 242, 83, 52, 1, 248, 249,
-    137, 198, 79, 52, 1, 234, 95, 137, 198, 79, 52, 1, 248, 249, 130, 198,
-    79, 52, 1, 234, 95, 130, 198, 79, 52, 1, 203, 104, 52, 1, 211, 77, 203,
-    104, 52, 1, 130, 45, 57, 33, 230, 211, 252, 60, 33, 252, 47, 252, 60, 33,
-    243, 2, 252, 60, 33, 198, 152, 33, 217, 146, 33, 210, 254, 33, 248, 36,
-    33, 75, 58, 33, 237, 42, 33, 228, 251, 58, 33, 206, 189, 58, 33, 55, 252,
-    47, 252, 60, 33, 247, 92, 33, 81, 219, 113, 58, 33, 55, 81, 219, 113, 58,
-    33, 55, 230, 211, 252, 60, 33, 247, 119, 33, 223, 93, 248, 36, 33, 153,
-    242, 75, 58, 33, 242, 75, 58, 33, 207, 18, 242, 75, 58, 33, 242, 75, 93,
-    183, 33, 230, 211, 252, 61, 60, 33, 252, 47, 252, 61, 60, 33, 45, 199,
-    229, 60, 33, 50, 199, 229, 60, 33, 45, 251, 116, 58, 33, 228, 187, 33,
-    45, 132, 206, 189, 60, 33, 133, 199, 229, 60, 33, 144, 199, 229, 60, 33,
-    108, 3, 60, 33, 216, 35, 3, 60, 33, 210, 190, 228, 251, 60, 33, 207, 24,
-    228, 251, 60, 33, 75, 60, 33, 237, 43, 60, 33, 206, 189, 60, 33, 242, 75,
-    60, 33, 247, 35, 33, 211, 138, 33, 81, 219, 113, 60, 33, 248, 29, 60, 33,
-    223, 93, 55, 251, 15, 60, 33, 247, 93, 60, 33, 243, 2, 252, 61, 60, 33,
-    248, 37, 60, 33, 223, 93, 248, 37, 60, 33, 198, 153, 60, 33, 217, 147,
-    60, 33, 130, 219, 112, 33, 55, 130, 219, 112, 33, 198, 153, 210, 255, 33,
-    203, 40, 201, 28, 210, 255, 33, 179, 201, 28, 210, 255, 33, 203, 40, 202,
-    24, 210, 255, 33, 179, 202, 24, 210, 255, 33, 50, 132, 206, 189, 60, 33,
-    223, 93, 248, 29, 60, 33, 51, 60, 33, 205, 62, 60, 33, 192, 236, 58, 33,
-    81, 198, 152, 33, 55, 210, 254, 33, 230, 211, 163, 77, 33, 252, 47, 163,
-    77, 33, 35, 210, 4, 33, 35, 221, 30, 33, 35, 237, 36, 198, 60, 33, 35,
-    191, 233, 33, 248, 29, 58, 33, 234, 43, 3, 60, 33, 55, 81, 219, 113, 60,
-    33, 45, 251, 116, 60, 33, 213, 12, 198, 153, 58, 33, 229, 1, 58, 33, 251,
-    165, 234, 45, 119, 58, 33, 45, 50, 64, 60, 33, 196, 66, 64, 60, 33, 230,
-    217, 222, 196, 33, 50, 250, 236, 58, 33, 45, 132, 206, 189, 58, 33, 233,
-    34, 33, 192, 236, 60, 33, 45, 250, 236, 60, 33, 50, 250, 236, 60, 33, 50,
-    250, 236, 23, 133, 250, 236, 60, 33, 50, 132, 206, 189, 58, 33, 75, 93,
-    183, 33, 250, 194, 60, 33, 55, 206, 189, 60, 33, 191, 21, 58, 33, 55,
-    248, 37, 60, 33, 55, 248, 36, 33, 55, 217, 146, 33, 55, 217, 147, 60, 33,
-    55, 198, 152, 33, 55, 223, 93, 248, 36, 33, 55, 96, 64, 60, 33, 8, 2, 1,
-    65, 33, 8, 2, 1, 71, 33, 8, 2, 1, 68, 33, 8, 2, 1, 74, 33, 8, 2, 1, 66,
-    33, 8, 2, 1, 247, 193, 33, 8, 2, 1, 238, 127, 33, 8, 2, 1, 230, 116, 33,
-    8, 2, 1, 218, 168, 33, 8, 2, 1, 146, 33, 8, 2, 1, 200, 43, 33, 8, 2, 1,
-    196, 12, 33, 8, 2, 1, 192, 235, 35, 6, 1, 229, 185, 35, 2, 1, 229, 185,
-    35, 6, 1, 251, 14, 205, 145, 35, 2, 1, 251, 14, 205, 145, 35, 212, 134,
-    56, 35, 110, 212, 134, 56, 35, 6, 1, 210, 171, 237, 10, 35, 2, 1, 210,
-    171, 237, 10, 35, 191, 233, 35, 2, 207, 18, 218, 206, 202, 197, 113, 35,
-    2, 235, 138, 218, 206, 202, 197, 113, 35, 2, 207, 18, 235, 138, 218, 206,
-    202, 197, 113, 35, 208, 13, 77, 35, 6, 1, 191, 240, 35, 198, 60, 35, 237,
-    36, 198, 60, 35, 6, 1, 251, 161, 4, 198, 60, 35, 251, 94, 199, 108, 35,
-    6, 1, 234, 48, 4, 198, 60, 35, 6, 1, 233, 254, 4, 198, 60, 35, 6, 1, 223,
-    84, 4, 198, 60, 35, 6, 1, 211, 108, 4, 198, 60, 35, 6, 1, 196, 71, 4,
-    198, 60, 35, 6, 1, 211, 111, 4, 198, 60, 35, 2, 1, 223, 84, 4, 237, 36,
-    23, 198, 60, 35, 6, 1, 251, 160, 35, 6, 1, 248, 212, 35, 6, 1, 231, 211,
-    35, 6, 1, 237, 106, 35, 6, 1, 234, 47, 35, 6, 1, 191, 76, 35, 6, 1, 233,
-    253, 35, 6, 1, 199, 15, 35, 6, 1, 223, 83, 35, 6, 1, 222, 72, 35, 6, 1,
-    220, 31, 35, 6, 1, 215, 155, 35, 6, 1, 212, 178, 35, 6, 1, 192, 207, 35,
-    6, 1, 211, 107, 35, 6, 1, 209, 185, 35, 6, 1, 207, 3, 35, 6, 1, 202, 196,
-    35, 6, 1, 199, 166, 35, 6, 1, 196, 70, 35, 6, 1, 209, 211, 35, 6, 1, 243,
-    95, 35, 6, 1, 208, 176, 35, 6, 1, 211, 110, 35, 6, 1, 223, 84, 4, 237,
-    35, 35, 6, 1, 196, 71, 4, 237, 35, 35, 2, 1, 251, 161, 4, 198, 60, 35, 2,
-    1, 234, 48, 4, 198, 60, 35, 2, 1, 233, 254, 4, 198, 60, 35, 2, 1, 223,
-    84, 4, 198, 60, 35, 2, 1, 196, 71, 4, 237, 36, 23, 198, 60, 35, 2, 1,
-    251, 160, 35, 2, 1, 248, 212, 35, 2, 1, 231, 211, 35, 2, 1, 237, 106, 35,
-    2, 1, 234, 47, 35, 2, 1, 191, 76, 35, 2, 1, 233, 253, 35, 2, 1, 199, 15,
-    35, 2, 1, 223, 83, 35, 2, 1, 222, 72, 35, 2, 1, 220, 31, 35, 2, 1, 215,
-    155, 35, 2, 1, 212, 178, 35, 2, 1, 192, 207, 35, 2, 1, 211, 107, 35, 2,
-    1, 209, 185, 35, 2, 1, 207, 3, 35, 2, 1, 53, 202, 196, 35, 2, 1, 202,
-    196, 35, 2, 1, 199, 166, 35, 2, 1, 196, 70, 35, 2, 1, 209, 211, 35, 2, 1,
-    243, 95, 35, 2, 1, 208, 176, 35, 2, 1, 211, 110, 35, 2, 1, 223, 84, 4,
-    237, 35, 35, 2, 1, 196, 71, 4, 237, 35, 35, 2, 1, 211, 108, 4, 198, 60,
-    35, 2, 1, 196, 71, 4, 198, 60, 35, 2, 1, 211, 111, 4, 198, 60, 35, 6,
-    222, 103, 113, 35, 248, 213, 113, 35, 199, 16, 113, 35, 196, 71, 4, 228,
-    251, 113, 35, 196, 71, 4, 252, 47, 23, 228, 251, 113, 35, 196, 71, 4,
-    237, 43, 23, 228, 251, 113, 35, 209, 212, 113, 35, 209, 186, 113, 35,
-    222, 103, 113, 35, 1, 251, 14, 221, 35, 35, 2, 1, 251, 14, 221, 35, 35,
-    1, 201, 73, 35, 2, 1, 201, 73, 35, 1, 237, 10, 35, 2, 1, 237, 10, 35, 1,
-    221, 35, 35, 2, 1, 221, 35, 35, 1, 205, 145, 35, 2, 1, 205, 145, 94, 6,
-    1, 203, 105, 94, 2, 1, 203, 105, 94, 6, 1, 233, 44, 94, 2, 1, 233, 44,
-    94, 6, 1, 221, 195, 94, 2, 1, 221, 195, 94, 6, 1, 228, 242, 94, 2, 1,
-    228, 242, 94, 6, 1, 231, 206, 94, 2, 1, 231, 206, 94, 6, 1, 203, 71, 94,
-    2, 1, 203, 71, 94, 6, 1, 237, 122, 94, 2, 1, 237, 122, 35, 222, 73, 113,
-    35, 207, 4, 113, 35, 218, 206, 202, 197, 113, 35, 1, 191, 240, 35, 6,
-    199, 16, 113, 35, 218, 206, 234, 48, 113, 35, 207, 18, 218, 206, 234, 48,
-    113, 35, 6, 1, 203, 56, 35, 2, 1, 203, 56, 35, 6, 218, 206, 202, 197,
-    113, 35, 6, 1, 205, 142, 35, 2, 1, 205, 142, 35, 207, 4, 4, 201, 28, 113,
-    35, 6, 207, 18, 218, 206, 202, 197, 113, 35, 6, 235, 138, 218, 206, 202,
-    197, 113, 35, 6, 207, 18, 235, 138, 218, 206, 202, 197, 113, 38, 6, 1,
-    223, 227, 4, 230, 210, 38, 6, 1, 223, 88, 38, 6, 1, 236, 192, 38, 6, 1,
-    231, 20, 38, 6, 1, 196, 125, 223, 226, 38, 6, 1, 235, 32, 38, 6, 1, 247,
-    203, 68, 38, 6, 1, 192, 33, 38, 6, 1, 223, 10, 38, 6, 1, 219, 76, 38, 6,
-    1, 213, 150, 38, 6, 1, 197, 155, 38, 6, 1, 221, 103, 38, 6, 1, 228, 74,
-    4, 230, 210, 38, 6, 1, 203, 40, 66, 38, 6, 1, 235, 28, 38, 6, 1, 65, 38,
-    6, 1, 249, 17, 38, 6, 1, 195, 153, 38, 6, 1, 231, 77, 38, 6, 1, 237, 146,
-    38, 6, 1, 223, 226, 38, 6, 1, 191, 62, 38, 6, 1, 191, 87, 38, 6, 1, 68,
-    38, 6, 1, 203, 40, 68, 38, 6, 1, 155, 38, 6, 1, 234, 140, 38, 6, 1, 234,
-    114, 38, 6, 1, 234, 103, 38, 6, 1, 74, 38, 6, 1, 210, 63, 38, 6, 1, 234,
-    34, 38, 6, 1, 234, 22, 38, 6, 1, 199, 145, 38, 6, 1, 66, 38, 6, 1, 234,
-    181, 38, 6, 1, 140, 38, 6, 1, 197, 161, 38, 6, 1, 243, 127, 38, 6, 1,
-    203, 165, 38, 6, 1, 203, 116, 38, 6, 1, 230, 17, 56, 38, 6, 1, 192, 58,
-    38, 6, 1, 202, 32, 56, 38, 6, 1, 71, 38, 6, 1, 191, 225, 38, 6, 1, 170,
-    38, 2, 1, 65, 38, 2, 1, 249, 17, 38, 2, 1, 195, 153, 38, 2, 1, 231, 77,
-    38, 2, 1, 237, 146, 38, 2, 1, 223, 226, 38, 2, 1, 191, 62, 38, 2, 1, 191,
-    87, 38, 2, 1, 68, 38, 2, 1, 203, 40, 68, 38, 2, 1, 155, 38, 2, 1, 234,
-    140, 38, 2, 1, 234, 114, 38, 2, 1, 234, 103, 38, 2, 1, 74, 38, 2, 1, 210,
-    63, 38, 2, 1, 234, 34, 38, 2, 1, 234, 22, 38, 2, 1, 199, 145, 38, 2, 1,
-    66, 38, 2, 1, 234, 181, 38, 2, 1, 140, 38, 2, 1, 197, 161, 38, 2, 1, 243,
-    127, 38, 2, 1, 203, 165, 38, 2, 1, 203, 116, 38, 2, 1, 230, 17, 56, 38,
-    2, 1, 192, 58, 38, 2, 1, 202, 32, 56, 38, 2, 1, 71, 38, 2, 1, 191, 225,
-    38, 2, 1, 170, 38, 2, 1, 223, 227, 4, 230, 210, 38, 2, 1, 223, 88, 38, 2,
-    1, 236, 192, 38, 2, 1, 231, 20, 38, 2, 1, 196, 125, 223, 226, 38, 2, 1,
-    235, 32, 38, 2, 1, 247, 203, 68, 38, 2, 1, 192, 33, 38, 2, 1, 223, 10,
-    38, 2, 1, 219, 76, 38, 2, 1, 213, 150, 38, 2, 1, 197, 155, 38, 2, 1, 221,
-    103, 38, 2, 1, 228, 74, 4, 230, 210, 38, 2, 1, 203, 40, 66, 38, 2, 1,
-    235, 28, 38, 6, 1, 211, 110, 38, 2, 1, 211, 110, 38, 6, 1, 192, 95, 38,
-    2, 1, 192, 95, 38, 6, 1, 223, 81, 71, 38, 2, 1, 223, 81, 71, 38, 6, 1,
-    219, 83, 191, 190, 38, 2, 1, 219, 83, 191, 190, 38, 6, 1, 223, 81, 219,
-    83, 191, 190, 38, 2, 1, 223, 81, 219, 83, 191, 190, 38, 6, 1, 248, 175,
-    191, 190, 38, 2, 1, 248, 175, 191, 190, 38, 6, 1, 223, 81, 248, 175, 191,
-    190, 38, 2, 1, 223, 81, 248, 175, 191, 190, 38, 6, 1, 220, 248, 38, 2, 1,
-    220, 248, 38, 6, 1, 208, 176, 38, 2, 1, 208, 176, 38, 6, 1, 232, 228, 38,
-    2, 1, 232, 228, 38, 6, 1, 223, 37, 38, 2, 1, 223, 37, 38, 6, 1, 223, 38,
-    4, 55, 230, 211, 252, 60, 38, 2, 1, 223, 38, 4, 55, 230, 211, 252, 60,
-    38, 6, 1, 196, 128, 38, 2, 1, 196, 128, 38, 6, 1, 206, 115, 211, 110, 38,
-    2, 1, 206, 115, 211, 110, 38, 6, 1, 211, 111, 4, 198, 122, 38, 2, 1, 211,
-    111, 4, 198, 122, 38, 6, 1, 211, 30, 38, 2, 1, 211, 30, 38, 6, 1, 221,
-    35, 38, 2, 1, 221, 35, 38, 198, 229, 56, 33, 38, 198, 122, 33, 38, 210,
-    191, 33, 38, 237, 213, 209, 75, 33, 38, 208, 170, 209, 75, 33, 38, 209,
-    54, 33, 38, 228, 141, 198, 229, 56, 33, 38, 216, 48, 56, 38, 6, 1, 203,
-    40, 228, 74, 4, 199, 215, 38, 2, 1, 203, 40, 228, 74, 4, 199, 215, 38, 6,
-    1, 204, 21, 56, 38, 2, 1, 204, 21, 56, 38, 6, 1, 234, 35, 4, 198, 182,
-    38, 2, 1, 234, 35, 4, 198, 182, 38, 6, 1, 231, 78, 4, 196, 69, 38, 2, 1,
-    231, 78, 4, 196, 69, 38, 6, 1, 231, 78, 4, 106, 38, 2, 1, 231, 78, 4,
-    106, 38, 6, 1, 231, 78, 4, 82, 102, 38, 2, 1, 231, 78, 4, 82, 102, 38, 6,
-    1, 191, 63, 4, 237, 87, 38, 2, 1, 191, 63, 4, 237, 87, 38, 6, 1, 191, 88,
-    4, 237, 87, 38, 2, 1, 191, 88, 4, 237, 87, 38, 6, 1, 222, 142, 4, 237,
-    87, 38, 2, 1, 222, 142, 4, 237, 87, 38, 6, 1, 222, 142, 4, 81, 106, 38,
-    2, 1, 222, 142, 4, 81, 106, 38, 6, 1, 222, 142, 4, 106, 38, 2, 1, 222,
-    142, 4, 106, 38, 6, 1, 249, 70, 155, 38, 2, 1, 249, 70, 155, 38, 6, 1,
-    234, 104, 4, 237, 87, 38, 2, 1, 234, 104, 4, 237, 87, 38, 6, 34, 234,
-    104, 231, 77, 38, 2, 34, 234, 104, 231, 77, 38, 6, 1, 210, 64, 4, 82,
-    102, 38, 2, 1, 210, 64, 4, 82, 102, 38, 6, 1, 252, 67, 140, 38, 2, 1,
-    252, 67, 140, 38, 6, 1, 234, 23, 4, 237, 87, 38, 2, 1, 234, 23, 4, 237,
-    87, 38, 6, 1, 199, 146, 4, 237, 87, 38, 2, 1, 199, 146, 4, 237, 87, 38,
-    6, 1, 201, 53, 66, 38, 2, 1, 201, 53, 66, 38, 6, 1, 201, 53, 126, 4, 106,
-    38, 2, 1, 201, 53, 126, 4, 106, 38, 6, 1, 230, 105, 4, 237, 87, 38, 2, 1,
-    230, 105, 4, 237, 87, 38, 6, 34, 199, 146, 197, 161, 38, 2, 34, 199, 146,
-    197, 161, 38, 6, 1, 243, 128, 4, 237, 87, 38, 2, 1, 243, 128, 4, 237, 87,
-    38, 6, 1, 243, 128, 4, 81, 106, 38, 2, 1, 243, 128, 4, 81, 106, 38, 6, 1,
-    203, 82, 38, 2, 1, 203, 82, 38, 6, 1, 252, 67, 243, 127, 38, 2, 1, 252,
-    67, 243, 127, 38, 6, 1, 252, 67, 243, 128, 4, 237, 87, 38, 2, 1, 252, 67,
-    243, 128, 4, 237, 87, 38, 1, 210, 179, 38, 6, 1, 191, 63, 4, 248, 36, 38,
-    2, 1, 191, 63, 4, 248, 36, 38, 6, 1, 222, 142, 4, 102, 38, 2, 1, 222,
-    142, 4, 102, 38, 6, 1, 234, 141, 4, 199, 215, 38, 2, 1, 234, 141, 4, 199,
-    215, 38, 6, 1, 234, 104, 4, 102, 38, 2, 1, 234, 104, 4, 102, 38, 6, 1,
-    234, 104, 4, 199, 215, 38, 2, 1, 234, 104, 4, 199, 215, 38, 6, 1, 221,
-    208, 243, 127, 38, 2, 1, 221, 208, 243, 127, 38, 6, 1, 234, 115, 4, 199,
-    215, 38, 2, 1, 234, 115, 4, 199, 215, 38, 2, 1, 210, 179, 38, 6, 1, 42,
-    4, 248, 36, 38, 2, 1, 42, 4, 248, 36, 38, 6, 1, 42, 4, 237, 42, 38, 2, 1,
-    42, 4, 237, 42, 38, 6, 34, 42, 223, 226, 38, 2, 34, 42, 223, 226, 38, 6,
-    1, 223, 227, 4, 248, 36, 38, 2, 1, 223, 227, 4, 248, 36, 38, 6, 1, 205,
-    86, 38, 2, 1, 205, 86, 38, 6, 1, 205, 87, 4, 237, 42, 38, 2, 1, 205, 87,
-    4, 237, 42, 38, 6, 1, 191, 63, 4, 237, 42, 38, 2, 1, 191, 63, 4, 237, 42,
-    38, 6, 1, 191, 88, 4, 237, 42, 38, 2, 1, 191, 88, 4, 237, 42, 38, 6, 1,
-    252, 67, 235, 32, 38, 2, 1, 252, 67, 235, 32, 38, 6, 1, 228, 74, 4, 217,
-    146, 38, 2, 1, 228, 74, 4, 217, 146, 38, 6, 1, 228, 74, 4, 237, 42, 38,
-    2, 1, 228, 74, 4, 237, 42, 38, 6, 1, 187, 4, 237, 42, 38, 2, 1, 187, 4,
-    237, 42, 38, 6, 1, 249, 82, 74, 38, 2, 1, 249, 82, 74, 38, 6, 1, 249, 82,
-    187, 4, 237, 42, 38, 2, 1, 249, 82, 187, 4, 237, 42, 38, 6, 1, 235, 15,
-    4, 237, 42, 38, 2, 1, 235, 15, 4, 237, 42, 38, 6, 1, 126, 4, 217, 146,
-    38, 2, 1, 126, 4, 217, 146, 38, 6, 1, 126, 4, 237, 42, 38, 2, 1, 126, 4,
-    237, 42, 38, 6, 1, 126, 4, 55, 252, 46, 38, 2, 1, 126, 4, 55, 252, 46,
-    38, 6, 1, 243, 128, 4, 237, 42, 38, 2, 1, 243, 128, 4, 237, 42, 38, 6, 1,
-    231, 78, 4, 237, 87, 38, 2, 1, 231, 78, 4, 237, 87, 38, 6, 1, 192, 59, 4,
-    237, 42, 38, 2, 1, 192, 59, 4, 237, 42, 38, 6, 1, 231, 78, 4, 201, 28,
-    23, 102, 38, 2, 1, 231, 78, 4, 201, 28, 23, 102, 38, 6, 1, 230, 105, 4,
-    102, 38, 2, 1, 230, 105, 4, 102, 38, 6, 1, 230, 105, 4, 106, 38, 2, 1,
-    230, 105, 4, 106, 38, 6, 1, 221, 45, 237, 146, 38, 2, 1, 221, 45, 237,
-    146, 38, 6, 1, 221, 45, 236, 192, 38, 2, 1, 221, 45, 236, 192, 38, 6, 1,
-    221, 45, 191, 12, 38, 2, 1, 221, 45, 191, 12, 38, 6, 1, 221, 45, 235, 24,
-    38, 2, 1, 221, 45, 235, 24, 38, 6, 1, 221, 45, 219, 76, 38, 2, 1, 221,
-    45, 219, 76, 38, 6, 1, 221, 45, 213, 150, 38, 2, 1, 221, 45, 213, 150,
-    38, 6, 1, 221, 45, 202, 115, 38, 2, 1, 221, 45, 202, 115, 38, 6, 1, 221,
-    45, 198, 116, 38, 2, 1, 221, 45, 198, 116, 38, 6, 1, 207, 18, 191, 87,
-    38, 2, 1, 207, 18, 191, 87, 38, 6, 1, 234, 141, 4, 102, 38, 2, 1, 234,
-    141, 4, 102, 38, 6, 1, 219, 159, 38, 2, 1, 219, 159, 38, 6, 1, 207, 6,
-    38, 2, 1, 207, 6, 38, 6, 1, 192, 129, 38, 2, 1, 192, 129, 38, 6, 1, 208,
-    96, 38, 2, 1, 208, 96, 38, 6, 1, 193, 125, 38, 2, 1, 193, 125, 38, 6, 1,
-    251, 188, 155, 38, 2, 1, 251, 188, 155, 38, 6, 1, 234, 141, 4, 82, 102,
-    38, 2, 1, 234, 141, 4, 82, 102, 38, 6, 1, 234, 104, 4, 82, 102, 38, 2, 1,
-    234, 104, 4, 82, 102, 38, 6, 1, 210, 64, 4, 237, 87, 38, 2, 1, 210, 64,
-    4, 237, 87, 38, 6, 1, 203, 83, 4, 237, 87, 38, 2, 1, 203, 83, 4, 237, 87,
-    38, 6, 1, 234, 104, 4, 45, 102, 38, 2, 1, 234, 104, 4, 45, 102, 38, 6, 1,
-    235, 16, 38, 2, 1, 235, 16, 38, 6, 1, 237, 195, 38, 2, 1, 237, 195, 38,
-    6, 1, 234, 141, 4, 237, 87, 38, 2, 1, 234, 141, 4, 237, 87, 250, 249, 6,
-    1, 250, 128, 250, 249, 6, 1, 248, 229, 250, 249, 6, 1, 231, 40, 250, 249,
-    6, 1, 238, 32, 250, 249, 6, 1, 234, 195, 250, 249, 6, 1, 191, 123, 250,
-    249, 6, 1, 234, 173, 250, 249, 6, 1, 233, 255, 250, 249, 6, 1, 159, 250,
-    249, 6, 1, 191, 62, 250, 249, 6, 1, 223, 131, 250, 249, 6, 1, 219, 80,
-    250, 249, 6, 1, 192, 212, 250, 249, 6, 1, 247, 160, 250, 249, 6, 1, 221,
-    251, 250, 249, 6, 1, 229, 23, 250, 249, 6, 1, 223, 32, 250, 249, 6, 1,
-    231, 88, 250, 249, 6, 1, 243, 117, 250, 249, 6, 1, 216, 186, 250, 249, 6,
-    1, 192, 33, 250, 249, 6, 1, 212, 253, 250, 249, 6, 1, 203, 165, 250, 249,
-    6, 1, 195, 24, 250, 249, 6, 1, 247, 1, 250, 249, 6, 1, 210, 41, 250, 249,
-    6, 1, 222, 247, 250, 249, 6, 1, 165, 250, 249, 6, 1, 205, 39, 250, 249,
-    6, 1, 195, 74, 250, 249, 6, 1, 198, 119, 250, 249, 6, 1, 207, 71, 250,
-    249, 6, 1, 242, 99, 250, 249, 6, 1, 192, 17, 250, 249, 6, 1, 209, 114,
-    250, 249, 6, 1, 222, 6, 250, 249, 6, 1, 211, 136, 250, 249, 6, 1, 233,
-    46, 250, 249, 52, 1, 45, 132, 206, 188, 250, 249, 251, 49, 250, 249, 234,
-    107, 77, 250, 249, 233, 216, 77, 250, 249, 242, 74, 250, 249, 208, 13,
-    77, 250, 249, 252, 68, 77, 250, 249, 2, 1, 153, 250, 128, 250, 249, 2, 1,
-    250, 128, 250, 249, 2, 1, 248, 229, 250, 249, 2, 1, 231, 40, 250, 249, 2,
-    1, 238, 32, 250, 249, 2, 1, 234, 195, 250, 249, 2, 1, 191, 123, 250, 249,
-    2, 1, 234, 173, 250, 249, 2, 1, 233, 255, 250, 249, 2, 1, 159, 250, 249,
-    2, 1, 191, 62, 250, 249, 2, 1, 223, 131, 250, 249, 2, 1, 219, 80, 250,
-    249, 2, 1, 192, 212, 250, 249, 2, 1, 247, 160, 250, 249, 2, 1, 221, 251,
-    250, 249, 2, 1, 229, 23, 250, 249, 2, 1, 223, 32, 250, 249, 2, 1, 231,
-    88, 250, 249, 2, 1, 243, 117, 250, 249, 2, 1, 216, 186, 250, 249, 2, 1,
-    192, 33, 250, 249, 2, 1, 212, 253, 250, 249, 2, 1, 203, 165, 250, 249, 2,
-    1, 195, 24, 250, 249, 2, 1, 247, 1, 250, 249, 2, 1, 210, 41, 250, 249, 2,
-    1, 222, 247, 250, 249, 2, 1, 165, 250, 249, 2, 1, 205, 39, 250, 249, 2,
-    1, 195, 74, 250, 249, 2, 1, 198, 119, 250, 249, 2, 1, 207, 71, 250, 249,
-    2, 1, 242, 99, 250, 249, 2, 1, 192, 17, 250, 249, 2, 1, 209, 114, 250,
-    249, 2, 1, 222, 6, 250, 249, 2, 1, 211, 136, 250, 249, 2, 1, 233, 46,
-    250, 249, 2, 34, 234, 196, 192, 17, 250, 249, 2, 1, 11, 4, 106, 250, 249,
-    232, 80, 201, 63, 250, 249, 228, 88, 206, 207, 250, 249, 233, 251, 56,
-    219, 223, 250, 249, 233, 251, 56, 250, 249, 235, 110, 56, 136, 252, 61,
-    233, 246, 136, 252, 61, 205, 40, 136, 252, 61, 203, 141, 136, 252, 61,
-    191, 99, 208, 78, 136, 252, 61, 191, 99, 231, 230, 136, 252, 61, 198,
-    134, 136, 252, 61, 207, 15, 136, 252, 61, 191, 97, 136, 252, 61, 210, 97,
-    136, 252, 61, 192, 48, 136, 252, 61, 199, 56, 136, 252, 61, 231, 139,
-    136, 252, 61, 231, 140, 215, 110, 136, 252, 61, 231, 137, 136, 252, 61,
-    208, 80, 210, 130, 136, 252, 61, 199, 103, 231, 158, 136, 252, 61, 210,
-    69, 136, 252, 61, 250, 173, 230, 85, 136, 252, 61, 215, 121, 136, 252,
-    61, 217, 117, 136, 252, 61, 216, 175, 136, 252, 61, 216, 176, 222, 7,
-    136, 252, 61, 237, 222, 136, 252, 61, 208, 91, 136, 252, 61, 199, 103,
-    208, 73, 136, 252, 61, 192, 61, 248, 230, 191, 247, 136, 252, 61, 211,
-    117, 136, 252, 61, 223, 183, 136, 252, 61, 237, 123, 136, 252, 61, 191,
-    19, 136, 87, 217, 34, 243, 10, 136, 209, 62, 203, 85, 136, 209, 62, 230,
-    8, 205, 40, 136, 209, 62, 230, 8, 210, 88, 136, 209, 62, 230, 8, 208, 84,
-    136, 209, 62, 229, 119, 136, 209, 62, 197, 158, 136, 209, 62, 205, 40,
-    136, 209, 62, 210, 88, 136, 209, 62, 208, 84, 136, 209, 62, 229, 7, 136,
-    209, 62, 229, 8, 230, 10, 40, 195, 158, 136, 209, 62, 208, 18, 136, 209,
-    62, 238, 17, 211, 57, 217, 70, 136, 209, 62, 216, 164, 136, 208, 152,
-    217, 67, 136, 209, 62, 207, 161, 136, 208, 152, 210, 99, 136, 209, 62,
-    203, 70, 236, 140, 136, 209, 62, 202, 175, 236, 140, 136, 208, 152, 202,
-    33, 210, 90, 136, 87, 116, 236, 140, 136, 87, 110, 236, 140, 136, 208,
-    152, 212, 131, 230, 84, 136, 209, 62, 208, 85, 208, 78, 136, 1, 251, 192,
-    136, 1, 248, 214, 136, 1, 231, 38, 136, 1, 237, 253, 136, 1, 229, 245,
-    136, 1, 195, 158, 136, 1, 191, 91, 136, 1, 229, 186, 136, 1, 199, 73,
-    136, 1, 191, 250, 136, 1, 53, 222, 106, 136, 1, 222, 106, 136, 1, 220,
-    27, 136, 1, 53, 216, 193, 136, 1, 216, 193, 136, 1, 53, 212, 130, 136, 1,
-    212, 130, 136, 1, 205, 148, 136, 1, 250, 126, 136, 1, 53, 210, 63, 136,
-    1, 210, 63, 136, 1, 53, 197, 163, 136, 1, 197, 163, 136, 1, 208, 42, 136,
-    1, 207, 38, 136, 1, 203, 69, 136, 1, 199, 162, 136, 191, 251, 197, 241,
-    136, 34, 192, 31, 55, 195, 158, 136, 34, 192, 31, 195, 159, 191, 250,
-    136, 34, 192, 31, 55, 191, 250, 136, 208, 152, 231, 139, 136, 208, 152,
-    231, 137, 9, 31, 56, 9, 3, 205, 141, 9, 232, 157, 217, 51, 9, 3, 205,
-    187, 9, 3, 205, 144, 9, 31, 87, 58, 251, 28, 238, 191, 206, 128, 251, 28,
-    232, 121, 206, 128, 9, 207, 122, 251, 28, 210, 14, 216, 50, 56, 251, 28,
-    210, 14, 199, 96, 198, 230, 56, 252, 2, 56, 9, 242, 74, 9, 237, 209, 204,
-    10, 9, 209, 64, 195, 137, 56, 9, 3, 216, 25, 9, 3, 205, 161, 251, 199,
-    193, 149, 9, 3, 251, 199, 250, 198, 9, 3, 207, 157, 251, 198, 9, 3, 207,
-    167, 251, 170, 251, 105, 9, 3, 199, 206, 9, 2, 137, 199, 219, 9, 2, 137,
-    34, 131, 4, 220, 36, 4, 192, 75, 9, 2, 137, 191, 113, 9, 2, 233, 70, 9,
-    2, 237, 245, 9, 2, 222, 52, 9, 204, 25, 9, 1, 77, 9, 234, 95, 79, 199,
-    54, 77, 9, 197, 225, 75, 208, 152, 77, 9, 208, 13, 77, 9, 1, 222, 56,
-    192, 75, 9, 1, 230, 57, 9, 1, 131, 4, 217, 142, 58, 9, 1, 131, 4, 230,
-    58, 58, 9, 1, 193, 134, 4, 230, 58, 58, 9, 1, 131, 4, 230, 58, 60, 9, 1,
-    99, 4, 230, 58, 58, 9, 1, 251, 192, 9, 1, 248, 245, 9, 1, 199, 115, 217,
-    62, 9, 1, 199, 114, 9, 1, 199, 29, 9, 1, 223, 6, 9, 1, 230, 81, 9, 1,
-    221, 210, 9, 1, 238, 3, 9, 1, 199, 41, 9, 1, 207, 71, 9, 1, 191, 113, 9,
-    1, 205, 46, 9, 1, 203, 109, 9, 1, 205, 192, 9, 1, 238, 26, 9, 1, 199,
-    219, 9, 1, 191, 116, 9, 1, 251, 230, 9, 1, 231, 86, 9, 1, 222, 5, 4, 105,
-    185, 58, 9, 1, 222, 5, 4, 115, 185, 60, 9, 1, 233, 74, 99, 4, 223, 93,
-    196, 12, 9, 1, 233, 74, 99, 4, 105, 185, 58, 9, 1, 233, 74, 99, 4, 115,
-    185, 58, 9, 199, 168, 9, 1, 233, 46, 9, 1, 208, 89, 9, 1, 222, 106, 9, 1,
-    220, 35, 9, 1, 216, 208, 9, 1, 213, 24, 9, 1, 229, 210, 9, 1, 193, 133,
-    9, 1, 131, 217, 99, 9, 1, 192, 75, 9, 233, 68, 9, 237, 243, 9, 222, 50,
-    9, 233, 70, 9, 237, 245, 9, 222, 52, 9, 203, 155, 9, 200, 206, 9, 217,
-    140, 58, 9, 230, 58, 58, 9, 230, 58, 60, 9, 200, 230, 251, 192, 9, 223,
-    93, 237, 245, 9, 87, 213, 25, 231, 57, 9, 190, 237, 9, 18, 3, 2, 196, 13,
-    58, 9, 18, 3, 223, 93, 2, 196, 13, 58, 9, 18, 3, 75, 60, 9, 207, 18, 237,
-    245, 9, 233, 71, 4, 105, 236, 138, 9, 193, 135, 230, 58, 60, 251, 28, 17,
-    191, 77, 251, 28, 17, 107, 251, 28, 17, 109, 251, 28, 17, 138, 251, 28,
-    17, 134, 251, 28, 17, 149, 251, 28, 17, 169, 251, 28, 17, 175, 251, 28,
-    17, 171, 251, 28, 17, 178, 9, 210, 13, 56, 9, 237, 138, 204, 10, 9, 198,
-    229, 204, 10, 9, 232, 226, 209, 60, 201, 102, 9, 1, 236, 139, 248, 245,
-    9, 1, 236, 139, 208, 89, 9, 1, 200, 182, 251, 192, 9, 1, 131, 193, 150,
-    9, 1, 131, 4, 193, 135, 230, 58, 58, 9, 1, 131, 4, 193, 135, 230, 58, 60,
-    9, 1, 137, 230, 57, 9, 1, 137, 230, 58, 251, 192, 9, 1, 137, 230, 58,
-    193, 133, 9, 1, 126, 4, 230, 58, 58, 9, 1, 137, 230, 58, 192, 75, 9, 1,
-    197, 124, 9, 1, 197, 122, 9, 1, 248, 255, 9, 1, 199, 115, 4, 206, 188, 9,
-    1, 199, 115, 4, 115, 185, 93, 235, 118, 9, 1, 210, 41, 9, 1, 199, 112, 9,
-    1, 248, 243, 9, 1, 182, 4, 230, 58, 58, 9, 1, 182, 4, 105, 185, 81, 58,
-    9, 1, 212, 87, 9, 1, 235, 41, 9, 1, 182, 4, 115, 185, 58, 9, 1, 199, 149,
-    9, 1, 199, 147, 9, 1, 237, 186, 9, 1, 238, 4, 4, 206, 188, 9, 1, 238, 4,
-    4, 75, 60, 9, 1, 238, 4, 4, 75, 248, 233, 23, 2, 199, 219, 9, 1, 238, 10,
-    9, 1, 237, 188, 9, 1, 235, 78, 9, 1, 238, 4, 4, 115, 185, 93, 235, 118,
-    9, 1, 238, 4, 4, 232, 128, 185, 58, 9, 1, 206, 101, 9, 1, 207, 72, 4, 2,
-    196, 12, 9, 1, 207, 72, 4, 206, 188, 9, 1, 207, 72, 4, 75, 60, 9, 1, 207,
-    72, 4, 2, 196, 13, 60, 9, 1, 207, 72, 4, 75, 248, 233, 23, 75, 58, 9, 1,
-    207, 72, 4, 105, 185, 58, 9, 1, 223, 3, 9, 1, 207, 72, 4, 232, 128, 185,
-    58, 9, 1, 205, 47, 4, 75, 248, 233, 23, 75, 58, 9, 1, 205, 47, 4, 115,
-    185, 60, 9, 1, 205, 47, 4, 115, 185, 248, 233, 23, 115, 185, 58, 9, 1,
-    205, 193, 4, 105, 185, 60, 9, 1, 205, 193, 4, 115, 185, 58, 9, 1, 199,
-    220, 4, 115, 185, 58, 9, 1, 251, 231, 4, 115, 185, 58, 9, 1, 236, 139,
-    233, 46, 9, 1, 233, 47, 4, 75, 215, 177, 60, 9, 1, 233, 47, 4, 75, 60, 9,
-    1, 195, 146, 9, 1, 233, 47, 4, 115, 185, 60, 9, 1, 210, 39, 9, 1, 208,
-    90, 4, 75, 58, 9, 1, 208, 90, 4, 115, 185, 58, 9, 1, 222, 4, 9, 1, 200,
-    146, 222, 106, 9, 1, 222, 107, 4, 206, 188, 9, 1, 222, 107, 4, 75, 58, 9,
-    1, 214, 70, 9, 1, 222, 107, 4, 115, 185, 60, 9, 1, 231, 227, 9, 1, 231,
-    228, 4, 206, 188, 9, 1, 213, 247, 9, 1, 231, 228, 4, 105, 185, 60, 9, 1,
-    230, 166, 9, 1, 231, 228, 4, 115, 185, 58, 9, 1, 220, 36, 4, 2, 196, 12,
-    9, 1, 220, 36, 4, 75, 58, 9, 1, 220, 36, 4, 115, 185, 58, 9, 1, 220, 36,
-    4, 115, 185, 60, 9, 1, 213, 25, 4, 75, 60, 9, 1, 213, 25, 231, 57, 9, 1,
-    206, 165, 9, 1, 213, 25, 4, 206, 188, 9, 1, 213, 25, 4, 115, 185, 58, 9,
-    1, 229, 211, 236, 170, 9, 1, 199, 150, 4, 75, 58, 9, 1, 229, 211, 4, 99,
-    58, 9, 1, 229, 211, 231, 0, 9, 1, 229, 211, 231, 1, 4, 230, 58, 58, 9, 1,
-    199, 115, 217, 63, 231, 0, 9, 1, 193, 134, 4, 206, 188, 9, 1, 221, 132,
-    211, 151, 9, 1, 211, 151, 9, 1, 66, 9, 1, 191, 225, 9, 1, 221, 132, 191,
-    225, 9, 1, 193, 134, 4, 105, 185, 58, 9, 1, 195, 153, 9, 1, 233, 74, 192,
-    75, 9, 1, 99, 4, 199, 215, 9, 1, 99, 4, 2, 196, 12, 9, 1, 193, 134, 4,
-    75, 58, 9, 1, 71, 9, 1, 99, 4, 115, 185, 60, 9, 1, 99, 249, 80, 9, 1, 99,
-    249, 81, 4, 230, 58, 58, 9, 232, 80, 201, 63, 9, 1, 252, 25, 9, 2, 137,
-    34, 205, 193, 4, 220, 36, 4, 131, 217, 99, 9, 2, 137, 34, 208, 90, 4,
-    220, 36, 4, 131, 217, 99, 9, 2, 137, 92, 89, 20, 9, 2, 137, 220, 36, 251,
-    192, 9, 2, 137, 223, 6, 9, 2, 137, 115, 236, 138, 9, 2, 137, 205, 46, 9,
-    234, 95, 79, 250, 130, 9, 201, 98, 79, 206, 60, 234, 141, 229, 114, 9, 2,
-    137, 206, 113, 191, 77, 9, 2, 137, 196, 73, 207, 91, 191, 77, 9, 2, 137,
-    236, 139, 229, 236, 79, 221, 210, 9, 2, 137, 92, 76, 20, 9, 2, 130, 205,
-    46, 9, 2, 137, 217, 141, 9, 2, 193, 133, 9, 2, 192, 75, 9, 2, 137, 192,
-    75, 9, 2, 137, 213, 24, 9, 209, 108, 79, 205, 177, 9, 234, 105, 247, 22,
-    130, 201, 63, 9, 234, 105, 247, 22, 137, 201, 63, 9, 206, 113, 137, 201,
-    64, 4, 233, 4, 247, 21, 9, 2, 130, 216, 208, 9, 1, 238, 4, 4, 223, 93,
-    196, 12, 9, 1, 207, 72, 4, 223, 93, 196, 12, 233, 205, 251, 28, 17, 191,
-    77, 233, 205, 251, 28, 17, 107, 233, 205, 251, 28, 17, 109, 233, 205,
-    251, 28, 17, 138, 233, 205, 251, 28, 17, 134, 233, 205, 251, 28, 17, 149,
-    233, 205, 251, 28, 17, 169, 233, 205, 251, 28, 17, 175, 233, 205, 251,
-    28, 17, 171, 233, 205, 251, 28, 17, 178, 9, 1, 203, 110, 4, 75, 60, 9, 1,
-    238, 27, 4, 75, 60, 9, 1, 231, 87, 4, 75, 60, 9, 3, 202, 173, 251, 137,
-    9, 3, 202, 173, 209, 16, 216, 186, 9, 1, 229, 211, 4, 223, 93, 196, 12,
-    200, 63, 234, 95, 79, 210, 127, 200, 63, 200, 177, 232, 80, 201, 63, 200,
-    63, 200, 232, 232, 80, 201, 63, 200, 63, 200, 177, 242, 83, 200, 63, 200,
-    232, 242, 83, 200, 63, 228, 241, 242, 83, 200, 63, 242, 84, 202, 110,
-    219, 224, 200, 63, 242, 84, 202, 110, 183, 200, 63, 200, 177, 242, 84,
-    202, 110, 219, 224, 200, 63, 200, 232, 242, 84, 202, 110, 183, 200, 63,
-    239, 24, 200, 63, 230, 15, 211, 176, 200, 63, 230, 15, 216, 162, 200, 63,
-    230, 15, 250, 195, 200, 63, 252, 68, 77, 200, 63, 1, 251, 202, 200, 63,
-    1, 200, 182, 251, 202, 200, 63, 1, 248, 211, 200, 63, 1, 231, 217, 200,
-    63, 1, 231, 218, 231, 194, 200, 63, 1, 238, 0, 200, 63, 1, 236, 139, 238,
-    1, 206, 181, 200, 63, 1, 229, 245, 200, 63, 1, 193, 133, 200, 63, 1, 191,
-    113, 200, 63, 1, 229, 184, 200, 63, 1, 199, 69, 200, 63, 1, 199, 70, 231,
-    194, 200, 63, 1, 191, 208, 200, 63, 1, 191, 209, 229, 245, 200, 63, 1,
-    222, 75, 200, 63, 1, 220, 34, 200, 63, 1, 216, 46, 200, 63, 1, 212, 130,
-    200, 63, 1, 204, 18, 200, 63, 1, 53, 204, 18, 200, 63, 1, 71, 200, 63, 1,
-    210, 63, 200, 63, 1, 207, 18, 210, 63, 200, 63, 1, 205, 189, 200, 63, 1,
-    208, 83, 200, 63, 1, 206, 181, 200, 63, 1, 203, 69, 200, 63, 1, 199, 159,
-    200, 63, 1, 209, 252, 248, 194, 200, 63, 1, 209, 252, 231, 84, 200, 63,
-    1, 209, 252, 237, 63, 200, 63, 208, 166, 58, 200, 63, 208, 166, 60, 200,
-    63, 208, 166, 235, 137, 200, 63, 191, 0, 58, 200, 63, 191, 0, 60, 200,
-    63, 191, 0, 235, 137, 200, 63, 207, 116, 58, 200, 63, 207, 116, 60, 200,
-    63, 235, 138, 191, 9, 228, 240, 200, 63, 235, 138, 191, 9, 251, 108, 200,
-    63, 229, 250, 58, 200, 63, 229, 250, 60, 200, 63, 229, 249, 235, 137,
-    200, 63, 234, 16, 58, 200, 63, 234, 16, 60, 200, 63, 206, 24, 200, 63,
-    233, 40, 236, 140, 200, 63, 207, 246, 200, 63, 206, 54, 200, 63, 105, 81,
-    185, 58, 200, 63, 105, 81, 185, 60, 200, 63, 115, 185, 58, 200, 63, 115,
-    185, 60, 200, 63, 211, 172, 219, 113, 58, 200, 63, 211, 172, 219, 113,
-    60, 200, 63, 215, 96, 200, 63, 249, 79, 200, 63, 1, 202, 28, 191, 69,
-    200, 63, 1, 202, 28, 221, 201, 200, 63, 1, 202, 28, 233, 59, 9, 1, 248,
-    246, 4, 115, 185, 228, 190, 60, 9, 1, 248, 246, 4, 75, 248, 233, 23, 115,
-    185, 58, 9, 1, 248, 246, 4, 115, 185, 209, 58, 196, 66, 60, 9, 1, 248,
-    246, 4, 115, 185, 209, 58, 196, 66, 248, 233, 23, 105, 185, 58, 9, 1,
-    248, 246, 4, 105, 185, 248, 233, 23, 75, 58, 9, 1, 248, 246, 4, 223, 93,
-    2, 196, 13, 60, 9, 1, 248, 246, 4, 2, 196, 12, 9, 1, 182, 4, 105, 185,
-    58, 9, 1, 182, 4, 115, 185, 209, 58, 196, 66, 60, 9, 1, 238, 4, 4, 105,
-    185, 195, 85, 248, 233, 23, 2, 199, 219, 9, 1, 238, 4, 4, 223, 93, 2,
-    196, 13, 60, 9, 1, 207, 72, 4, 106, 9, 1, 205, 47, 4, 232, 128, 185, 58,
-    9, 1, 251, 231, 4, 105, 185, 58, 9, 1, 251, 231, 4, 115, 185, 209, 58,
-    235, 119, 58, 9, 1, 251, 231, 4, 105, 185, 195, 85, 58, 9, 1, 233, 47, 4,
-    105, 185, 60, 9, 1, 233, 47, 4, 115, 185, 209, 58, 196, 66, 60, 9, 1,
-    222, 5, 4, 75, 58, 9, 1, 222, 5, 4, 115, 185, 58, 9, 1, 222, 5, 4, 115,
-    185, 209, 58, 196, 66, 60, 9, 1, 92, 4, 75, 58, 9, 1, 92, 4, 75, 60, 9,
-    1, 213, 25, 4, 105, 185, 60, 9, 1, 213, 25, 4, 2, 199, 219, 9, 1, 213,
-    25, 4, 2, 196, 12, 9, 1, 220, 36, 4, 164, 9, 1, 207, 72, 4, 105, 185,
-    195, 85, 58, 9, 1, 207, 72, 4, 230, 58, 58, 9, 1, 205, 47, 4, 105, 185,
-    195, 85, 58, 9, 1, 182, 4, 2, 9, 1, 199, 220, 60, 9, 1, 182, 4, 2, 9, 1,
-    199, 220, 23, 105, 236, 138, 9, 1, 205, 47, 4, 2, 9, 1, 199, 220, 23,
-    105, 236, 138, 9, 1, 207, 72, 4, 2, 9, 1, 199, 220, 23, 105, 236, 138, 9,
-    1, 182, 4, 2, 9, 1, 199, 220, 58, 9, 1, 131, 4, 233, 205, 251, 28, 17,
-    105, 58, 9, 1, 131, 4, 233, 205, 251, 28, 17, 115, 58, 9, 1, 233, 74, 99,
-    4, 233, 205, 251, 28, 17, 105, 58, 9, 1, 233, 74, 99, 4, 233, 205, 251,
-    28, 17, 115, 58, 9, 1, 233, 74, 99, 4, 233, 205, 251, 28, 17, 232, 128,
-    60, 9, 1, 193, 134, 4, 233, 205, 251, 28, 17, 105, 58, 9, 1, 193, 134, 4,
-    233, 205, 251, 28, 17, 115, 58, 9, 1, 99, 249, 81, 4, 233, 205, 251, 28,
-    17, 105, 58, 9, 1, 99, 249, 81, 4, 233, 205, 251, 28, 17, 115, 58, 9, 1,
-    182, 4, 233, 205, 251, 28, 17, 232, 128, 60, 9, 1, 205, 47, 4, 233, 205,
-    251, 28, 17, 232, 128, 58, 9, 1, 205, 47, 4, 223, 93, 196, 12, 9, 1, 222,
-    107, 4, 105, 185, 58, 199, 46, 1, 230, 91, 199, 46, 1, 203, 119, 199, 46,
-    1, 213, 23, 199, 46, 1, 207, 178, 199, 46, 1, 249, 151, 199, 46, 1, 219,
-    156, 199, 46, 1, 222, 122, 199, 46, 1, 251, 179, 199, 46, 1, 195, 186,
-    199, 46, 1, 216, 207, 199, 46, 1, 233, 107, 199, 46, 1, 237, 66, 199, 46,
-    1, 199, 48, 199, 46, 1, 220, 122, 199, 46, 1, 231, 236, 199, 46, 1, 231,
-    6, 199, 46, 1, 205, 45, 199, 46, 1, 237, 207, 199, 46, 1, 191, 94, 199,
-    46, 1, 199, 161, 199, 46, 1, 192, 140, 199, 46, 1, 210, 77, 199, 46, 1,
-    223, 15, 199, 46, 1, 243, 130, 199, 46, 1, 197, 131, 199, 46, 1, 229,
-    176, 199, 46, 1, 221, 214, 199, 46, 1, 199, 47, 199, 46, 1, 191, 121,
-    199, 46, 1, 203, 108, 199, 46, 1, 205, 196, 199, 46, 1, 238, 30, 199, 46,
-    1, 159, 199, 46, 1, 191, 7, 199, 46, 1, 251, 227, 199, 46, 1, 231, 85,
-    199, 46, 1, 208, 93, 199, 46, 1, 193, 178, 199, 46, 252, 70, 199, 46,
-    252, 171, 199, 46, 228, 29, 199, 46, 234, 187, 199, 46, 196, 161, 199,
-    46, 211, 86, 199, 46, 234, 198, 199, 46, 233, 195, 199, 46, 211, 171,
-    199, 46, 211, 181, 199, 46, 200, 206, 199, 46, 1, 214, 250, 213, 107, 17,
-    191, 77, 213, 107, 17, 107, 213, 107, 17, 109, 213, 107, 17, 138, 213,
-    107, 17, 134, 213, 107, 17, 149, 213, 107, 17, 169, 213, 107, 17, 175,
-    213, 107, 17, 171, 213, 107, 17, 178, 213, 107, 1, 65, 213, 107, 1, 234,
-    188, 213, 107, 1, 68, 213, 107, 1, 71, 213, 107, 1, 66, 213, 107, 1, 211,
-    87, 213, 107, 1, 74, 213, 107, 1, 238, 18, 213, 107, 1, 215, 61, 213,
-    107, 1, 249, 153, 213, 107, 1, 168, 213, 107, 1, 190, 190, 213, 107, 1,
-    223, 32, 213, 107, 1, 247, 1, 213, 107, 1, 238, 32, 213, 107, 1, 165,
-    213, 107, 1, 206, 109, 213, 107, 1, 188, 213, 107, 1, 231, 182, 213, 107,
-    1, 233, 109, 213, 107, 1, 155, 213, 107, 1, 173, 213, 107, 1, 215, 7,
-    193, 37, 213, 107, 1, 174, 213, 107, 1, 212, 101, 213, 107, 1, 180, 213,
-    107, 1, 140, 213, 107, 1, 193, 190, 213, 107, 1, 170, 213, 107, 1, 212,
-    102, 193, 37, 213, 107, 1, 222, 193, 223, 32, 213, 107, 1, 222, 193, 247,
-    1, 213, 107, 1, 222, 193, 165, 213, 107, 33, 203, 40, 137, 198, 79, 213,
-    107, 33, 203, 40, 130, 198, 79, 213, 107, 33, 203, 40, 206, 180, 198, 79,
-    213, 107, 33, 179, 237, 86, 198, 79, 213, 107, 33, 179, 137, 198, 79,
-    213, 107, 33, 179, 130, 198, 79, 213, 107, 33, 179, 206, 180, 198, 79,
-    213, 107, 33, 214, 213, 77, 213, 107, 33, 55, 75, 58, 213, 107, 137, 163,
-    251, 49, 213, 107, 130, 163, 251, 49, 213, 107, 16, 211, 88, 237, 101,
-    213, 107, 16, 231, 181, 213, 107, 242, 74, 213, 107, 233, 216, 77, 213,
-    107, 220, 94, 213, 107, 237, 233, 213, 107, 236, 142, 56, 213, 107, 199,
-    195, 56, 205, 151, 1, 251, 204, 205, 151, 1, 248, 148, 205, 151, 1, 231,
-    216, 205, 151, 1, 238, 2, 205, 151, 1, 223, 44, 205, 151, 1, 249, 151,
-    205, 151, 1, 191, 80, 205, 151, 1, 223, 53, 205, 151, 1, 198, 125, 205,
-    151, 1, 191, 189, 205, 151, 1, 222, 123, 205, 151, 1, 220, 118, 205, 151,
-    1, 216, 46, 205, 151, 1, 212, 130, 205, 151, 1, 202, 171, 205, 151, 1,
-    223, 162, 205, 151, 1, 233, 23, 205, 151, 1, 197, 166, 205, 151, 1, 208,
-    10, 205, 151, 1, 206, 181, 205, 151, 1, 203, 138, 205, 151, 1, 199, 243,
-    205, 151, 87, 223, 162, 205, 151, 87, 223, 161, 205, 151, 87, 211, 165,
-    205, 151, 87, 238, 16, 205, 151, 52, 1, 234, 52, 191, 189, 205, 151, 87,
-    234, 52, 191, 189, 205, 151, 18, 3, 179, 71, 205, 151, 18, 3, 71, 205,
-    151, 18, 3, 210, 253, 252, 206, 205, 151, 18, 3, 179, 252, 206, 205, 151,
-    18, 3, 252, 206, 205, 151, 18, 3, 210, 253, 65, 205, 151, 18, 3, 179, 65,
-    205, 151, 18, 3, 65, 205, 151, 52, 1, 203, 40, 65, 205, 151, 18, 3, 203,
-    40, 65, 205, 151, 18, 3, 179, 66, 205, 151, 18, 3, 66, 205, 151, 52, 1,
-    68, 205, 151, 18, 3, 179, 68, 205, 151, 18, 3, 68, 205, 151, 18, 3, 74,
-    205, 151, 18, 3, 200, 206, 205, 151, 87, 214, 93, 205, 151, 208, 152,
-    214, 93, 205, 151, 208, 152, 251, 255, 205, 151, 208, 152, 251, 121, 205,
-    151, 208, 152, 249, 57, 205, 151, 208, 152, 250, 174, 205, 151, 208, 152,
-    203, 57, 205, 151, 252, 68, 77, 205, 151, 208, 152, 216, 197, 208, 48,
-    205, 151, 208, 152, 191, 16, 205, 151, 208, 152, 208, 48, 205, 151, 208,
-    152, 191, 119, 205, 151, 208, 152, 197, 54, 205, 151, 208, 152, 250, 255,
-    205, 151, 208, 152, 202, 33, 217, 37, 205, 151, 208, 152, 251, 97, 217,
-    86, 1, 230, 65, 217, 86, 1, 252, 155, 217, 86, 1, 251, 253, 217, 86, 1,
-    252, 42, 217, 86, 1, 251, 245, 217, 86, 1, 196, 36, 217, 86, 1, 250, 123,
-    217, 86, 1, 223, 53, 217, 86, 1, 250, 171, 217, 86, 1, 251, 211, 217, 86,
-    1, 251, 216, 217, 86, 1, 251, 207, 217, 86, 1, 251, 149, 217, 86, 1, 251,
-    132, 217, 86, 1, 250, 219, 217, 86, 1, 223, 162, 217, 86, 1, 251, 65,
-    217, 86, 1, 250, 184, 217, 86, 1, 251, 37, 217, 86, 1, 251, 33, 217, 86,
-    1, 250, 209, 217, 86, 1, 250, 182, 217, 86, 1, 235, 62, 217, 86, 1, 222,
-    114, 217, 86, 1, 251, 230, 217, 86, 252, 3, 77, 217, 86, 195, 22, 77,
-    217, 86, 231, 153, 77, 217, 86, 208, 151, 200, 63, 1, 142, 214, 68, 200,
-    63, 1, 142, 223, 32, 200, 63, 1, 142, 212, 101, 200, 63, 1, 142, 197,
-    132, 200, 63, 1, 142, 213, 79, 200, 63, 1, 142, 213, 61, 200, 63, 1, 142,
-    248, 203, 200, 63, 1, 142, 165, 200, 63, 1, 142, 219, 73, 200, 63, 1,
-    142, 219, 62, 200, 63, 1, 142, 201, 175, 9, 1, 131, 4, 250, 170, 233, 70,
-    9, 1, 131, 4, 250, 170, 198, 54, 50, 233, 70, 9, 1, 131, 4, 50, 82, 106,
-    9, 1, 131, 4, 45, 82, 106, 9, 1, 131, 4, 250, 170, 222, 52, 9, 1, 131, 4,
-    250, 170, 248, 77, 50, 222, 52, 9, 1, 131, 4, 250, 170, 206, 115, 75, 58,
-    9, 1, 131, 4, 250, 170, 50, 206, 115, 236, 140, 9, 1, 131, 4, 250, 170,
-    45, 206, 115, 236, 140, 9, 1, 131, 4, 250, 170, 206, 115, 75, 60, 9, 1,
-    131, 4, 75, 58, 9, 1, 131, 4, 250, 170, 198, 54, 50, 233, 71, 23, 75, 58,
-    9, 1, 131, 4, 50, 82, 201, 28, 23, 75, 58, 9, 1, 131, 4, 250, 170, 248,
-    77, 50, 222, 53, 23, 75, 58, 9, 1, 131, 4, 250, 170, 198, 54, 50, 233,
-    71, 23, 45, 206, 188, 9, 1, 131, 4, 50, 82, 201, 28, 23, 45, 206, 188, 9,
-    1, 131, 4, 250, 170, 248, 77, 50, 222, 53, 23, 45, 206, 188, 9, 1, 131,
-    4, 250, 170, 50, 230, 57, 9, 1, 131, 4, 250, 170, 45, 230, 57, 9, 199,
-    169, 4, 210, 251, 230, 57, 9, 199, 169, 4, 210, 251, 193, 133, 9, 199,
-    169, 4, 105, 185, 60, 9, 1, 199, 4, 192, 75, 9, 249, 72, 206, 115, 236,
-    140, 9, 207, 147, 206, 115, 236, 140, 9, 1, 213, 25, 4, 223, 93, 2, 196,
-    12, 9, 1, 182, 4, 223, 93, 2, 196, 13, 60, 9, 1, 199, 220, 4, 75, 60, 9,
-    1, 199, 220, 4, 115, 185, 60, 9, 1, 222, 5, 4, 105, 185, 195, 85, 60, 9,
-    81, 199, 215, 9, 209, 8, 87, 58, 9, 209, 182, 87, 58, 9, 2, 137, 193, 23,
-    251, 206, 9, 2, 130, 193, 23, 223, 61, 9, 2, 130, 193, 23, 223, 179, 9,
-    2, 130, 193, 23, 199, 173, 9, 217, 142, 193, 179, 9, 200, 182, 131, 215,
-    234, 9, 235, 128, 217, 141, 9, 132, 217, 142, 139, 217, 141, 9, 1, 248,
-    246, 4, 2, 196, 13, 60, 9, 1, 248, 246, 4, 230, 58, 58, 9, 1, 223, 7, 4,
-    105, 185, 58, 9, 1, 199, 220, 4, 105, 185, 58, 9, 1, 233, 47, 4, 75, 248,
-    233, 23, 115, 185, 58, 9, 1, 208, 90, 4, 75, 60, 9, 1, 220, 36, 4, 55,
-    164, 9, 1, 92, 4, 115, 185, 58, 9, 1, 99, 4, 105, 185, 248, 233, 23, 230,
-    58, 58, 9, 1, 99, 4, 105, 185, 248, 233, 23, 75, 58, 9, 1, 207, 72, 4,
-    219, 4, 9, 1, 193, 134, 4, 75, 193, 52, 9, 1, 206, 142, 192, 75, 9, 1,
-    130, 251, 192, 9, 1, 238, 4, 4, 115, 185, 60, 9, 1, 205, 193, 4, 115,
-    185, 60, 9, 1, 231, 228, 4, 223, 93, 106, 9, 1, 201, 53, 193, 133, 9, 1,
-    191, 114, 4, 223, 93, 196, 13, 58, 9, 1, 251, 231, 4, 115, 185, 60, 9, 1,
-    222, 107, 4, 75, 60, 9, 1, 208, 90, 4, 75, 248, 233, 23, 213, 44, 185,
-    58, 9, 1, 248, 246, 4, 2, 92, 58, 9, 1, 210, 42, 4, 2, 92, 58, 9, 1, 199,
-    115, 4, 2, 199, 115, 58, 9, 1, 207, 72, 4, 2, 213, 25, 58, 9, 1, 99, 4,
-    105, 185, 248, 233, 23, 2, 213, 25, 58, 9, 1, 252, 0, 233, 46, 9, 1, 252,
-    0, 208, 89, 9, 1, 252, 0, 213, 24, 9, 1, 210, 42, 4, 2, 196, 12, 9, 1,
-    199, 115, 4, 2, 196, 12, 9, 1, 197, 125, 4, 2, 196, 12, 9, 1, 199, 150,
-    4, 2, 196, 12, 9, 1, 222, 5, 4, 2, 196, 12, 9, 1, 231, 87, 4, 115, 185,
-    58, 9, 1, 252, 0, 208, 90, 4, 115, 185, 58, 9, 1, 223, 7, 4, 115, 185,
-    58, 9, 1, 223, 7, 4, 115, 185, 60, 9, 1, 220, 36, 4, 2, 9, 1, 199, 220,
-    58, 9, 1, 230, 224, 9, 2, 233, 74, 192, 75, 9, 2, 137, 233, 74, 192, 75,
-    9, 2, 137, 99, 249, 81, 4, 105, 185, 60, 9, 2, 137, 193, 23, 205, 182, 9,
-    2, 137, 191, 116, 9, 220, 13, 206, 115, 75, 58, 9, 220, 13, 206, 115, 75,
-    60, 9, 200, 207, 60, 9, 220, 13, 243, 11, 60, 9, 220, 13, 206, 115, 75,
-    223, 118, 243, 11, 60, 9, 2, 130, 193, 133, 9, 2, 137, 193, 23, 251, 30,
-    9, 2, 137, 205, 192, 9, 2, 137, 251, 230, 9, 2, 137, 208, 89, 9, 2, 137,
-    213, 25, 4, 222, 52, 9, 2, 130, 213, 25, 4, 222, 52, 9, 2, 137, 193, 23,
-    250, 181, 9, 2, 137, 193, 23, 250, 218, 9, 2, 137, 193, 23, 251, 131, 9,
-    2, 137, 193, 23, 205, 171, 9, 2, 137, 193, 23, 208, 52, 9, 2, 137, 193,
-    23, 193, 157, 9, 2, 137, 232, 157, 217, 51, 9, 2, 137, 3, 205, 187, 9,
-    236, 218, 234, 95, 79, 250, 130, 9, 153, 237, 246, 60, 9, 238, 171, 233,
-    70, 9, 238, 171, 237, 245, 9, 238, 171, 222, 52, 9, 238, 171, 233, 68, 9,
-    238, 171, 237, 243, 9, 238, 171, 222, 50, 9, 163, 91, 75, 58, 9, 163,
-    105, 185, 58, 9, 163, 219, 5, 58, 9, 163, 91, 75, 60, 9, 163, 105, 185,
-    60, 9, 163, 219, 5, 60, 9, 211, 77, 233, 68, 9, 211, 77, 237, 243, 9,
-    211, 77, 222, 50, 9, 2, 137, 193, 133, 9, 233, 71, 4, 206, 188, 9, 233,
-    71, 4, 75, 58, 9, 222, 53, 4, 75, 60, 9, 45, 250, 236, 58, 9, 50, 250,
-    236, 58, 9, 45, 250, 236, 60, 9, 50, 250, 236, 60, 9, 55, 50, 250, 236,
-    58, 9, 55, 50, 250, 236, 93, 4, 236, 140, 9, 50, 250, 236, 93, 4, 236,
-    140, 9, 237, 246, 4, 236, 140, 9, 87, 202, 206, 213, 25, 231, 57, 100, 3,
-    223, 93, 247, 119, 100, 3, 247, 119, 100, 3, 251, 71, 100, 3, 195, 35,
-    100, 1, 203, 40, 65, 100, 1, 65, 100, 1, 252, 206, 100, 1, 68, 100, 1,
-    223, 199, 100, 1, 66, 100, 1, 196, 30, 100, 1, 117, 146, 100, 1, 117,
-    172, 100, 1, 247, 122, 71, 100, 1, 203, 40, 71, 100, 1, 71, 100, 1, 251,
-    236, 100, 1, 247, 122, 74, 100, 1, 203, 40, 74, 100, 1, 74, 100, 1, 250,
-    163, 100, 1, 155, 100, 1, 221, 215, 100, 1, 231, 240, 100, 1, 231, 91,
-    100, 1, 214, 68, 100, 1, 247, 160, 100, 1, 247, 1, 100, 1, 223, 32, 100,
-    1, 222, 252, 100, 1, 212, 101, 100, 1, 197, 132, 100, 1, 197, 120, 100,
-    1, 237, 191, 100, 1, 237, 175, 100, 1, 213, 79, 100, 1, 190, 190, 100, 1,
-    199, 49, 100, 1, 238, 32, 100, 1, 237, 68, 100, 1, 180, 100, 1, 213, 61,
-    100, 1, 168, 100, 1, 209, 228, 100, 1, 249, 153, 100, 1, 248, 203, 100,
-    1, 174, 100, 1, 170, 100, 1, 165, 100, 1, 206, 109, 100, 1, 173, 100, 1,
-    219, 73, 100, 1, 219, 62, 100, 1, 195, 188, 100, 1, 203, 165, 100, 1,
-    201, 175, 100, 1, 188, 100, 1, 140, 100, 18, 3, 211, 151, 100, 18, 3,
-    211, 85, 100, 3, 212, 141, 100, 3, 250, 145, 100, 18, 3, 252, 206, 100,
-    18, 3, 68, 100, 18, 3, 223, 199, 100, 18, 3, 66, 100, 18, 3, 196, 30,
-    100, 18, 3, 117, 146, 100, 18, 3, 117, 206, 110, 100, 18, 3, 247, 122,
-    71, 100, 18, 3, 203, 40, 71, 100, 18, 3, 71, 100, 18, 3, 251, 236, 100,
-    18, 3, 247, 122, 74, 100, 18, 3, 203, 40, 74, 100, 18, 3, 74, 100, 18, 3,
-    250, 163, 100, 3, 195, 40, 100, 18, 3, 208, 207, 71, 100, 18, 3, 250,
-    140, 100, 211, 113, 100, 201, 38, 3, 196, 154, 100, 201, 38, 3, 251, 73,
-    100, 230, 211, 252, 60, 100, 252, 47, 252, 60, 100, 18, 3, 247, 122, 179,
-    71, 100, 18, 3, 196, 152, 100, 18, 3, 196, 29, 100, 1, 208, 96, 100, 1,
-    221, 193, 100, 1, 231, 66, 100, 1, 191, 123, 100, 1, 237, 180, 100, 1,
-    207, 6, 100, 1, 233, 109, 100, 1, 191, 175, 100, 1, 117, 206, 110, 100,
-    1, 117, 219, 74, 100, 18, 3, 117, 172, 100, 18, 3, 117, 219, 74, 100,
-    237, 238, 100, 55, 237, 238, 100, 17, 191, 77, 100, 17, 107, 100, 17,
-    109, 100, 17, 138, 100, 17, 134, 100, 17, 149, 100, 17, 169, 100, 17,
-    175, 100, 17, 171, 100, 17, 178, 100, 252, 68, 56, 100, 3, 137, 201, 246,
-    236, 140, 100, 1, 247, 122, 65, 100, 1, 211, 151, 100, 1, 211, 85, 100,
-    1, 250, 140, 100, 1, 196, 152, 100, 1, 196, 29, 100, 1, 217, 43, 237,
-    191, 100, 1, 191, 71, 100, 1, 88, 170, 100, 1, 231, 127, 100, 1, 222,
-    230, 100, 1, 231, 11, 201, 63, 100, 1, 237, 181, 100, 1, 249, 53, 248,
-    225, 251, 100, 248, 225, 3, 247, 119, 248, 225, 3, 251, 71, 248, 225, 3,
-    195, 35, 248, 225, 1, 65, 248, 225, 1, 252, 206, 248, 225, 1, 68, 248,
-    225, 1, 223, 199, 248, 225, 1, 66, 248, 225, 1, 196, 30, 248, 225, 1,
-    117, 146, 248, 225, 1, 117, 172, 248, 225, 1, 71, 248, 225, 1, 251, 236,
-    248, 225, 1, 74, 248, 225, 1, 250, 163, 248, 225, 1, 155, 248, 225, 1,
-    221, 215, 248, 225, 1, 231, 240, 248, 225, 1, 231, 91, 248, 225, 1, 214,
-    68, 248, 225, 1, 247, 160, 248, 225, 1, 247, 1, 248, 225, 1, 223, 32,
-    248, 225, 1, 222, 252, 248, 225, 1, 212, 101, 248, 225, 1, 197, 132, 248,
-    225, 1, 197, 120, 248, 225, 1, 237, 191, 248, 225, 1, 237, 175, 248, 225,
-    1, 213, 79, 248, 225, 1, 190, 190, 248, 225, 1, 199, 49, 248, 225, 1,
-    238, 32, 248, 225, 1, 237, 68, 248, 225, 1, 180, 248, 225, 1, 168, 248,
-    225, 1, 209, 228, 248, 225, 1, 249, 153, 248, 225, 1, 248, 203, 248, 225,
-    1, 174, 248, 225, 1, 170, 248, 225, 1, 165, 248, 225, 1, 173, 248, 225,
-    1, 203, 165, 248, 225, 1, 201, 175, 248, 225, 1, 188, 248, 225, 1, 140,
-    248, 225, 3, 212, 141, 248, 225, 3, 250, 145, 248, 225, 18, 3, 252, 206,
-    248, 225, 18, 3, 68, 248, 225, 18, 3, 223, 199, 248, 225, 18, 3, 66, 248,
-    225, 18, 3, 196, 30, 248, 225, 18, 3, 117, 146, 248, 225, 18, 3, 117,
-    206, 110, 248, 225, 18, 3, 71, 248, 225, 18, 3, 251, 236, 248, 225, 18,
-    3, 74, 248, 225, 18, 3, 250, 163, 248, 225, 3, 195, 40, 248, 225, 1, 221,
-    204, 190, 190, 248, 225, 250, 164, 219, 198, 77, 248, 225, 1, 206, 109,
-    248, 225, 1, 207, 6, 248, 225, 1, 191, 175, 248, 225, 1, 117, 206, 110,
-    248, 225, 1, 117, 219, 74, 248, 225, 18, 3, 117, 172, 248, 225, 18, 3,
-    117, 219, 74, 248, 225, 17, 191, 77, 248, 225, 17, 107, 248, 225, 17,
-    109, 248, 225, 17, 138, 248, 225, 17, 134, 248, 225, 17, 149, 248, 225,
-    17, 169, 248, 225, 17, 175, 248, 225, 17, 171, 248, 225, 17, 178, 248,
-    225, 1, 207, 186, 4, 82, 237, 38, 248, 225, 1, 207, 186, 4, 110, 237, 38,
-    248, 225, 206, 36, 77, 248, 225, 206, 36, 56, 248, 225, 238, 170, 212,
-    133, 107, 248, 225, 238, 170, 212, 133, 109, 248, 225, 238, 170, 212,
-    133, 138, 248, 225, 238, 170, 212, 133, 134, 248, 225, 238, 170, 212,
-    133, 91, 219, 181, 199, 39, 199, 34, 237, 99, 248, 225, 238, 170, 237,
-    100, 202, 130, 248, 225, 223, 54, 248, 225, 231, 207, 77, 248, 225, 1,
-    195, 150, 251, 71, 248, 225, 252, 68, 56, 248, 225, 205, 138, 77, 230,
-    144, 3, 252, 41, 248, 167, 230, 144, 3, 248, 167, 230, 144, 3, 195, 35,
-    230, 144, 1, 65, 230, 144, 1, 252, 206, 230, 144, 1, 68, 230, 144, 1,
-    223, 199, 230, 144, 1, 66, 230, 144, 1, 196, 30, 230, 144, 1, 234, 188,
-    230, 144, 1, 251, 236, 230, 144, 1, 211, 87, 230, 144, 1, 250, 163, 230,
-    144, 1, 155, 230, 144, 1, 221, 215, 230, 144, 1, 231, 240, 230, 144, 1,
-    231, 91, 230, 144, 1, 214, 68, 230, 144, 1, 247, 160, 230, 144, 1, 247,
-    1, 230, 144, 1, 223, 32, 230, 144, 1, 222, 252, 230, 144, 1, 212, 101,
-    230, 144, 1, 197, 132, 230, 144, 1, 197, 120, 230, 144, 1, 237, 191, 230,
-    144, 1, 237, 175, 230, 144, 1, 213, 79, 230, 144, 1, 190, 190, 230, 144,
-    1, 199, 49, 230, 144, 1, 238, 32, 230, 144, 1, 237, 68, 230, 144, 1, 180,
-    230, 144, 1, 168, 230, 144, 1, 209, 228, 230, 144, 1, 249, 153, 230, 144,
-    1, 248, 203, 230, 144, 1, 174, 230, 144, 1, 170, 230, 144, 1, 165, 230,
-    144, 1, 173, 230, 144, 1, 219, 73, 230, 144, 1, 195, 188, 230, 144, 1,
-    203, 165, 230, 144, 1, 188, 230, 144, 1, 140, 230, 144, 3, 212, 141, 230,
-    144, 18, 3, 252, 206, 230, 144, 18, 3, 68, 230, 144, 18, 3, 223, 199,
-    230, 144, 18, 3, 66, 230, 144, 18, 3, 196, 30, 230, 144, 18, 3, 234, 188,
-    230, 144, 18, 3, 251, 236, 230, 144, 18, 3, 211, 87, 230, 144, 18, 3,
-    250, 163, 230, 144, 3, 195, 40, 230, 144, 3, 196, 157, 230, 144, 1, 221,
-    193, 230, 144, 1, 231, 66, 230, 144, 1, 191, 123, 230, 144, 1, 206, 109,
-    230, 144, 1, 233, 109, 230, 144, 17, 191, 77, 230, 144, 17, 107, 230,
-    144, 17, 109, 230, 144, 17, 138, 230, 144, 17, 134, 230, 144, 17, 149,
-    230, 144, 17, 169, 230, 144, 17, 175, 230, 144, 17, 171, 230, 144, 17,
-    178, 230, 144, 198, 133, 230, 144, 252, 40, 230, 144, 223, 75, 230, 144,
-    196, 58, 230, 144, 234, 148, 211, 92, 230, 144, 3, 192, 115, 230, 144,
-    252, 68, 56, 230, 161, 3, 247, 119, 230, 161, 3, 251, 71, 230, 161, 3,
-    195, 35, 230, 161, 1, 65, 230, 161, 1, 252, 206, 230, 161, 1, 68, 230,
-    161, 1, 223, 199, 230, 161, 1, 66, 230, 161, 1, 196, 30, 230, 161, 1,
-    117, 146, 230, 161, 1, 117, 172, 230, 161, 18, 247, 122, 71, 230, 161, 1,
-    71, 230, 161, 1, 251, 236, 230, 161, 18, 247, 122, 74, 230, 161, 1, 74,
-    230, 161, 1, 250, 163, 230, 161, 1, 155, 230, 161, 1, 221, 215, 230, 161,
-    1, 231, 240, 230, 161, 1, 231, 91, 230, 161, 1, 214, 68, 230, 161, 1,
-    247, 160, 230, 161, 1, 247, 1, 230, 161, 1, 223, 32, 230, 161, 1, 222,
-    252, 230, 161, 1, 212, 101, 230, 161, 1, 197, 132, 230, 161, 1, 197, 120,
-    230, 161, 1, 237, 191, 230, 161, 1, 237, 175, 230, 161, 1, 213, 79, 230,
-    161, 1, 190, 190, 230, 161, 1, 199, 49, 230, 161, 1, 238, 32, 230, 161,
-    1, 237, 68, 230, 161, 1, 180, 230, 161, 1, 168, 230, 161, 1, 209, 228,
-    230, 161, 1, 249, 153, 230, 161, 1, 248, 203, 230, 161, 1, 174, 230, 161,
-    1, 170, 230, 161, 1, 165, 230, 161, 1, 173, 230, 161, 1, 219, 73, 230,
-    161, 1, 195, 188, 230, 161, 1, 203, 165, 230, 161, 1, 201, 175, 230, 161,
-    1, 188, 230, 161, 1, 140, 230, 161, 3, 212, 141, 230, 161, 3, 250, 145,
-    230, 161, 18, 3, 252, 206, 230, 161, 18, 3, 68, 230, 161, 18, 3, 223,
-    199, 230, 161, 18, 3, 66, 230, 161, 18, 3, 196, 30, 230, 161, 18, 3, 117,
-    146, 230, 161, 18, 3, 117, 206, 110, 230, 161, 18, 3, 247, 122, 71, 230,
-    161, 18, 3, 71, 230, 161, 18, 3, 251, 236, 230, 161, 18, 3, 247, 122, 74,
-    230, 161, 18, 3, 74, 230, 161, 18, 3, 250, 163, 230, 161, 3, 195, 40,
-    230, 161, 211, 113, 230, 161, 1, 117, 206, 110, 230, 161, 1, 117, 219,
-    74, 230, 161, 18, 3, 117, 172, 230, 161, 18, 3, 117, 219, 74, 230, 161,
-    17, 191, 77, 230, 161, 17, 107, 230, 161, 17, 109, 230, 161, 17, 138,
-    230, 161, 17, 134, 230, 161, 17, 149, 230, 161, 17, 169, 230, 161, 17,
-    175, 230, 161, 17, 171, 230, 161, 17, 178, 230, 161, 252, 68, 56, 230,
-    161, 206, 36, 56, 230, 161, 1, 191, 71, 230, 161, 3, 200, 206, 230, 161,
-    3, 203, 155, 230, 161, 3, 217, 139, 230, 161, 3, 198, 224, 212, 142, 58,
-    230, 161, 3, 243, 11, 212, 142, 58, 230, 161, 3, 197, 15, 212, 142, 58,
-    211, 45, 3, 247, 119, 211, 45, 3, 251, 71, 211, 45, 3, 195, 35, 211, 45,
-    1, 65, 211, 45, 1, 252, 206, 211, 45, 1, 68, 211, 45, 1, 223, 199, 211,
-    45, 1, 66, 211, 45, 1, 196, 30, 211, 45, 1, 117, 146, 211, 45, 1, 117,
-    172, 211, 45, 1, 71, 211, 45, 1, 251, 236, 211, 45, 1, 74, 211, 45, 1,
-    250, 163, 211, 45, 1, 155, 211, 45, 1, 221, 215, 211, 45, 1, 231, 240,
-    211, 45, 1, 231, 91, 211, 45, 1, 214, 68, 211, 45, 1, 247, 160, 211, 45,
-    1, 247, 1, 211, 45, 1, 223, 32, 211, 45, 1, 222, 252, 211, 45, 1, 212,
-    101, 211, 45, 1, 197, 132, 211, 45, 1, 197, 120, 211, 45, 1, 237, 191,
-    211, 45, 1, 237, 175, 211, 45, 1, 213, 79, 211, 45, 1, 190, 190, 211, 45,
-    1, 199, 49, 211, 45, 1, 238, 32, 211, 45, 1, 237, 68, 211, 45, 1, 180,
-    211, 45, 1, 168, 211, 45, 1, 209, 228, 211, 45, 1, 249, 153, 211, 45, 1,
-    248, 203, 211, 45, 1, 174, 211, 45, 1, 170, 211, 45, 1, 165, 211, 45, 1,
-    173, 211, 45, 1, 219, 73, 211, 45, 1, 195, 188, 211, 45, 1, 203, 165,
-    211, 45, 1, 201, 175, 211, 45, 1, 188, 211, 45, 1, 140, 211, 45, 3, 212,
-    141, 211, 45, 3, 250, 145, 211, 45, 18, 3, 252, 206, 211, 45, 18, 3, 68,
-    211, 45, 18, 3, 223, 199, 211, 45, 18, 3, 66, 211, 45, 18, 3, 196, 30,
-    211, 45, 18, 3, 117, 146, 211, 45, 18, 3, 117, 206, 110, 211, 45, 18, 3,
-    71, 211, 45, 18, 3, 251, 236, 211, 45, 18, 3, 74, 211, 45, 18, 3, 250,
-    163, 211, 45, 3, 195, 40, 211, 45, 3, 210, 254, 211, 45, 251, 237, 219,
-    198, 77, 211, 45, 250, 164, 219, 198, 77, 211, 45, 1, 206, 109, 211, 45,
-    1, 207, 6, 211, 45, 1, 191, 175, 211, 45, 1, 117, 206, 110, 211, 45, 1,
-    117, 219, 74, 211, 45, 18, 3, 117, 172, 211, 45, 18, 3, 117, 219, 74,
-    211, 45, 17, 191, 77, 211, 45, 17, 107, 211, 45, 17, 109, 211, 45, 17,
-    138, 211, 45, 17, 134, 211, 45, 17, 149, 211, 45, 17, 169, 211, 45, 17,
-    175, 211, 45, 17, 171, 211, 45, 17, 178, 211, 45, 223, 54, 211, 45, 1,
-    193, 190, 211, 45, 232, 118, 91, 208, 22, 211, 45, 232, 118, 91, 230, 70,
-    211, 45, 232, 118, 115, 208, 20, 211, 45, 232, 118, 91, 202, 128, 211,
-    45, 232, 118, 91, 234, 159, 211, 45, 232, 118, 115, 202, 125, 44, 3, 251,
-    71, 44, 3, 195, 35, 44, 1, 65, 44, 1, 252, 206, 44, 1, 68, 44, 1, 223,
-    199, 44, 1, 66, 44, 1, 196, 30, 44, 1, 71, 44, 1, 234, 188, 44, 1, 251,
-    236, 44, 1, 74, 44, 1, 211, 87, 44, 1, 250, 163, 44, 1, 155, 44, 1, 214,
-    68, 44, 1, 247, 160, 44, 1, 223, 32, 44, 1, 212, 101, 44, 1, 197, 132,
-    44, 1, 213, 79, 44, 1, 190, 190, 44, 1, 180, 44, 1, 213, 61, 44, 1, 168,
-    44, 1, 174, 44, 1, 170, 44, 1, 165, 44, 1, 206, 109, 44, 1, 173, 44, 1,
-    219, 73, 44, 1, 219, 62, 44, 1, 195, 188, 44, 1, 203, 165, 44, 1, 201,
-    175, 44, 1, 188, 44, 1, 140, 44, 18, 3, 252, 206, 44, 18, 3, 68, 44, 18,
-    3, 223, 199, 44, 18, 3, 66, 44, 18, 3, 196, 30, 44, 18, 3, 71, 44, 18, 3,
-    234, 188, 44, 18, 3, 251, 236, 44, 18, 3, 74, 44, 18, 3, 211, 87, 44, 18,
-    3, 250, 163, 44, 3, 195, 40, 44, 211, 113, 44, 250, 164, 219, 198, 77,
-    44, 17, 191, 77, 44, 17, 107, 44, 17, 109, 44, 17, 138, 44, 17, 134, 44,
-    17, 149, 44, 17, 169, 44, 17, 175, 44, 17, 171, 44, 17, 178, 44, 31, 199,
-    95, 44, 31, 91, 228, 140, 44, 31, 91, 189, 44, 237, 204, 56, 44, 215,
-    214, 56, 44, 192, 78, 56, 44, 237, 142, 56, 44, 238, 230, 56, 44, 250,
-    220, 93, 56, 44, 206, 36, 56, 44, 31, 56, 199, 99, 3, 33, 247, 120, 58,
-    199, 99, 3, 247, 119, 199, 99, 3, 251, 71, 199, 99, 3, 195, 35, 199, 99,
-    3, 33, 251, 72, 58, 199, 99, 1, 65, 199, 99, 1, 252, 206, 199, 99, 1, 68,
-    199, 99, 1, 223, 199, 199, 99, 1, 66, 199, 99, 1, 196, 30, 199, 99, 1,
-    117, 146, 199, 99, 1, 117, 172, 199, 99, 1, 71, 199, 99, 1, 234, 188,
-    199, 99, 1, 251, 236, 199, 99, 1, 74, 199, 99, 1, 211, 87, 199, 99, 1,
-    250, 163, 199, 99, 1, 155, 199, 99, 1, 221, 215, 199, 99, 1, 231, 240,
-    199, 99, 1, 231, 91, 199, 99, 1, 214, 68, 199, 99, 1, 247, 160, 199, 99,
-    1, 247, 1, 199, 99, 1, 223, 32, 199, 99, 1, 222, 252, 199, 99, 1, 212,
-    101, 199, 99, 1, 197, 132, 199, 99, 1, 197, 120, 199, 99, 1, 237, 191,
-    199, 99, 1, 237, 175, 199, 99, 1, 213, 79, 199, 99, 1, 190, 190, 199, 99,
-    1, 199, 49, 199, 99, 1, 238, 32, 199, 99, 1, 237, 68, 199, 99, 1, 180,
-    199, 99, 1, 168, 199, 99, 1, 209, 228, 199, 99, 1, 249, 153, 199, 99, 1,
-    248, 203, 199, 99, 1, 174, 199, 99, 1, 170, 199, 99, 1, 165, 199, 99, 1,
-    206, 109, 199, 99, 1, 173, 199, 99, 1, 219, 73, 199, 99, 1, 219, 62, 199,
-    99, 1, 195, 188, 199, 99, 1, 203, 165, 199, 99, 1, 201, 175, 199, 99, 1,
-    188, 199, 99, 1, 140, 199, 99, 3, 212, 141, 199, 99, 3, 250, 145, 199,
-    99, 18, 3, 252, 206, 199, 99, 18, 3, 68, 199, 99, 18, 3, 223, 199, 199,
-    99, 18, 3, 66, 199, 99, 18, 3, 196, 30, 199, 99, 18, 3, 117, 146, 199,
-    99, 18, 3, 117, 206, 110, 199, 99, 18, 3, 71, 199, 99, 18, 3, 234, 188,
-    199, 99, 18, 3, 251, 236, 199, 99, 18, 3, 74, 199, 99, 18, 3, 211, 87,
-    199, 99, 18, 3, 250, 163, 199, 99, 3, 195, 40, 199, 99, 219, 198, 77,
-    199, 99, 251, 237, 219, 198, 77, 199, 99, 1, 197, 168, 199, 99, 1, 235,
-    35, 199, 99, 1, 206, 90, 199, 99, 1, 214, 232, 209, 46, 199, 99, 1, 117,
-    206, 110, 199, 99, 1, 117, 219, 74, 199, 99, 18, 3, 117, 172, 199, 99,
-    18, 3, 117, 219, 74, 199, 99, 17, 191, 77, 199, 99, 17, 107, 199, 99, 17,
-    109, 199, 99, 17, 138, 199, 99, 17, 134, 199, 99, 17, 149, 199, 99, 17,
-    169, 199, 99, 17, 175, 199, 99, 17, 171, 199, 99, 17, 178, 199, 99, 3,
-    202, 210, 199, 99, 232, 118, 17, 191, 78, 40, 211, 155, 208, 253, 79,
-    134, 199, 99, 232, 118, 17, 91, 40, 211, 155, 208, 253, 79, 134, 199, 99,
-    232, 118, 17, 105, 40, 211, 155, 208, 253, 79, 134, 199, 99, 232, 118,
-    17, 115, 40, 211, 155, 208, 253, 79, 134, 199, 99, 232, 118, 17, 91, 40,
-    233, 229, 208, 253, 79, 134, 199, 99, 232, 118, 17, 105, 40, 233, 229,
-    208, 253, 79, 134, 199, 99, 232, 118, 17, 115, 40, 233, 229, 208, 253,
-    79, 134, 199, 99, 3, 197, 48, 222, 81, 3, 201, 246, 247, 119, 222, 81, 3,
-    247, 119, 222, 81, 3, 251, 71, 222, 81, 3, 195, 35, 222, 81, 3, 202, 210,
-    222, 81, 1, 65, 222, 81, 1, 252, 206, 222, 81, 1, 68, 222, 81, 1, 223,
-    199, 222, 81, 1, 66, 222, 81, 1, 196, 30, 222, 81, 1, 117, 146, 222, 81,
-    1, 117, 172, 222, 81, 1, 71, 222, 81, 1, 234, 188, 222, 81, 1, 251, 236,
-    222, 81, 1, 74, 222, 81, 1, 211, 87, 222, 81, 1, 250, 163, 222, 81, 1,
-    155, 222, 81, 1, 221, 215, 222, 81, 1, 231, 240, 222, 81, 1, 231, 91,
-    222, 81, 1, 214, 68, 222, 81, 1, 247, 160, 222, 81, 1, 247, 1, 222, 81,
-    1, 223, 32, 222, 81, 1, 222, 252, 222, 81, 1, 212, 101, 222, 81, 1, 197,
-    132, 222, 81, 1, 197, 120, 222, 81, 1, 237, 191, 222, 81, 1, 237, 175,
-    222, 81, 1, 213, 79, 222, 81, 1, 190, 190, 222, 81, 1, 199, 49, 222, 81,
-    1, 238, 32, 222, 81, 1, 237, 68, 222, 81, 1, 180, 222, 81, 1, 168, 222,
-    81, 1, 209, 228, 222, 81, 1, 249, 153, 222, 81, 1, 248, 203, 222, 81, 1,
-    174, 222, 81, 1, 170, 222, 81, 1, 165, 222, 81, 1, 206, 109, 222, 81, 1,
-    173, 222, 81, 1, 219, 73, 222, 81, 1, 195, 188, 222, 81, 1, 203, 165,
-    222, 81, 1, 201, 175, 222, 81, 1, 188, 222, 81, 1, 140, 222, 81, 3, 212,
-    141, 222, 81, 3, 250, 145, 222, 81, 18, 3, 252, 206, 222, 81, 18, 3, 68,
-    222, 81, 18, 3, 223, 199, 222, 81, 18, 3, 66, 222, 81, 18, 3, 196, 30,
-    222, 81, 18, 3, 117, 146, 222, 81, 18, 3, 117, 206, 110, 222, 81, 18, 3,
-    71, 222, 81, 18, 3, 234, 188, 222, 81, 18, 3, 251, 236, 222, 81, 18, 3,
-    74, 222, 81, 18, 3, 211, 87, 222, 81, 18, 3, 250, 163, 222, 81, 3, 195,
-    40, 222, 81, 219, 198, 77, 222, 81, 251, 237, 219, 198, 77, 222, 81, 1,
-    214, 232, 209, 46, 222, 81, 1, 233, 109, 222, 81, 1, 117, 206, 110, 222,
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-    17, 175, 222, 81, 17, 171, 222, 81, 17, 178, 222, 81, 3, 222, 237, 222,
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-    58, 142, 3, 247, 119, 142, 3, 251, 71, 142, 3, 195, 35, 142, 1, 195, 150,
-    251, 71, 142, 1, 65, 142, 1, 252, 206, 142, 1, 68, 142, 1, 223, 199, 142,
-    1, 66, 142, 1, 196, 30, 142, 1, 117, 146, 142, 1, 117, 172, 142, 1, 71,
-    142, 1, 234, 188, 142, 1, 251, 236, 142, 1, 74, 142, 1, 211, 87, 142, 1,
-    250, 163, 142, 1, 155, 142, 1, 221, 215, 142, 1, 231, 240, 142, 1, 231,
-    91, 142, 1, 214, 68, 142, 1, 247, 160, 142, 1, 247, 1, 142, 1, 223, 32,
-    142, 1, 222, 252, 142, 1, 212, 101, 142, 1, 197, 132, 142, 1, 197, 120,
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-    142, 1, 199, 49, 142, 1, 238, 32, 142, 1, 237, 68, 142, 1, 180, 142, 1,
-    213, 61, 142, 1, 168, 142, 1, 209, 228, 142, 1, 249, 153, 142, 1, 248,
-    203, 142, 1, 174, 142, 1, 170, 142, 1, 165, 142, 1, 206, 109, 142, 1,
-    173, 142, 1, 219, 73, 142, 1, 219, 62, 142, 1, 195, 188, 142, 1, 203,
-    165, 142, 1, 201, 175, 142, 1, 188, 142, 1, 140, 142, 1, 197, 101, 142,
-    3, 81, 249, 88, 195, 40, 142, 3, 243, 4, 195, 40, 142, 3, 250, 145, 142,
-    18, 3, 252, 206, 142, 18, 3, 68, 142, 18, 3, 223, 199, 142, 18, 3, 66,
-    142, 18, 3, 196, 30, 142, 18, 3, 117, 146, 142, 18, 3, 117, 206, 110,
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-    74, 142, 18, 3, 211, 87, 142, 18, 3, 250, 163, 142, 3, 195, 40, 142, 1,
-    75, 207, 45, 142, 3, 210, 130, 142, 1, 243, 84, 218, 168, 142, 1, 243,
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-    234, 155, 142, 232, 118, 91, 197, 35, 142, 232, 118, 91, 199, 86, 142,
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-    142, 18, 3, 117, 219, 74, 142, 17, 191, 77, 142, 17, 107, 142, 17, 109,
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-    232, 118, 115, 208, 20, 142, 232, 118, 91, 202, 128, 142, 232, 118, 91,
-    234, 159, 142, 232, 118, 115, 202, 125, 142, 237, 209, 77, 142, 1, 243,
-    84, 213, 80, 142, 1, 243, 84, 215, 61, 142, 1, 243, 84, 206, 110, 142, 1,
-    243, 84, 172, 142, 1, 243, 84, 219, 74, 142, 1, 243, 84, 222, 152, 166,
-    3, 247, 119, 166, 3, 251, 70, 166, 3, 195, 34, 166, 1, 250, 129, 166, 1,
-    252, 159, 166, 1, 252, 5, 166, 1, 252, 20, 166, 1, 223, 43, 166, 1, 223,
-    198, 166, 1, 196, 20, 166, 1, 196, 24, 166, 1, 223, 70, 166, 1, 223, 71,
-    166, 1, 223, 182, 166, 1, 223, 184, 166, 1, 233, 196, 166, 1, 234, 183,
-    166, 1, 251, 219, 166, 1, 210, 241, 166, 1, 211, 80, 166, 1, 250, 148,
-    166, 1, 251, 163, 222, 27, 166, 1, 217, 119, 222, 27, 166, 1, 251, 163,
-    231, 185, 166, 1, 217, 119, 231, 185, 166, 1, 222, 80, 214, 247, 166, 1,
-    205, 132, 231, 185, 166, 1, 251, 163, 247, 68, 166, 1, 217, 119, 247, 68,
-    166, 1, 251, 163, 223, 13, 166, 1, 217, 119, 223, 13, 166, 1, 199, 241,
-    214, 247, 166, 1, 199, 241, 205, 131, 214, 248, 166, 1, 205, 132, 223,
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-    166, 1, 205, 132, 237, 182, 166, 1, 251, 163, 199, 153, 166, 1, 217, 119,
-    199, 153, 166, 1, 251, 163, 237, 202, 166, 1, 217, 119, 237, 202, 166, 1,
-    237, 234, 214, 197, 166, 1, 205, 132, 237, 202, 166, 1, 251, 163, 210,
-    71, 166, 1, 217, 119, 210, 71, 166, 1, 251, 163, 249, 55, 166, 1, 217,
-    119, 249, 55, 166, 1, 217, 19, 166, 1, 251, 143, 249, 55, 166, 1, 192,
-    85, 166, 1, 207, 121, 166, 1, 237, 234, 219, 247, 166, 1, 195, 156, 166,
-    1, 199, 241, 205, 102, 166, 1, 215, 92, 205, 102, 166, 1, 237, 234, 205,
-    102, 166, 1, 229, 251, 166, 1, 215, 92, 219, 247, 166, 1, 233, 61, 166,
-    3, 251, 205, 166, 18, 3, 252, 15, 166, 18, 3, 221, 240, 252, 22, 166, 18,
-    3, 237, 11, 252, 22, 166, 18, 3, 221, 240, 223, 67, 166, 18, 3, 237, 11,
-    223, 67, 166, 18, 3, 221, 240, 210, 219, 166, 18, 3, 237, 11, 210, 219,
-    166, 18, 3, 231, 229, 166, 18, 3, 221, 46, 166, 18, 3, 237, 11, 221, 46,
-    166, 18, 3, 221, 48, 237, 120, 166, 18, 3, 221, 47, 230, 92, 252, 15,
-    166, 18, 3, 221, 47, 230, 92, 237, 11, 252, 15, 166, 18, 3, 221, 47, 230,
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-    86, 17, 107, 166, 219, 86, 17, 109, 166, 219, 86, 17, 138, 166, 219, 86,
-    17, 134, 166, 219, 86, 17, 149, 166, 219, 86, 17, 169, 166, 219, 86, 17,
-    175, 166, 219, 86, 17, 171, 166, 219, 86, 17, 178, 166, 18, 3, 237, 11,
-    231, 229, 166, 18, 3, 237, 11, 231, 184, 166, 208, 152, 220, 209, 199,
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-    199, 44, 246, 240, 221, 184, 221, 174, 199, 44, 246, 240, 221, 184, 221,
-    169, 199, 44, 246, 240, 221, 184, 221, 179, 199, 44, 246, 240, 221, 184,
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-    69, 246, 246, 199, 44, 246, 240, 243, 69, 243, 79, 199, 44, 246, 240,
-    243, 69, 246, 245, 199, 44, 246, 240, 202, 47, 202, 46, 199, 44, 246,
-    240, 243, 69, 243, 65, 199, 44, 246, 240, 192, 13, 192, 20, 199, 44, 246,
-    240, 236, 175, 246, 254, 199, 44, 246, 240, 119, 210, 87, 199, 44, 246,
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-    176, 233, 109, 199, 44, 246, 240, 209, 200, 209, 221, 199, 44, 246, 240,
-    232, 176, 233, 80, 199, 44, 246, 240, 209, 200, 205, 146, 199, 44, 246,
-    240, 216, 13, 174, 199, 44, 246, 240, 192, 13, 192, 116, 199, 44, 246,
-    240, 206, 163, 206, 61, 199, 44, 246, 240, 206, 68, 199, 44, 246, 240,
-    219, 44, 219, 105, 199, 44, 246, 240, 218, 225, 199, 44, 246, 240, 193,
-    49, 193, 175, 199, 44, 246, 240, 202, 47, 205, 167, 199, 44, 246, 240,
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-    240, 229, 24, 229, 122, 199, 44, 246, 240, 219, 44, 243, 47, 199, 44,
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-    246, 240, 210, 194, 199, 44, 246, 240, 205, 126, 65, 199, 44, 246, 240,
-    217, 113, 230, 55, 199, 44, 246, 240, 205, 126, 252, 206, 199, 44, 246,
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-    240, 205, 126, 223, 199, 199, 44, 246, 240, 205, 126, 196, 152, 199, 44,
-    246, 240, 205, 126, 196, 149, 199, 44, 246, 240, 205, 126, 66, 199, 44,
-    246, 240, 205, 126, 196, 30, 199, 44, 246, 240, 209, 202, 199, 44, 238,
-    170, 16, 249, 119, 199, 44, 246, 240, 205, 126, 71, 199, 44, 246, 240,
-    205, 126, 252, 25, 199, 44, 246, 240, 205, 126, 74, 199, 44, 246, 240,
-    205, 126, 251, 237, 217, 107, 199, 44, 246, 240, 205, 126, 251, 237, 217,
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-    246, 240, 217, 105, 199, 44, 246, 240, 217, 113, 234, 147, 199, 44, 246,
-    240, 217, 113, 198, 241, 199, 44, 246, 240, 217, 113, 197, 244, 199, 44,
-    246, 240, 217, 113, 243, 132, 199, 44, 246, 240, 199, 36, 199, 44, 246,
-    240, 213, 183, 199, 44, 246, 240, 192, 110, 199, 44, 246, 240, 232, 164,
-    199, 44, 17, 191, 77, 199, 44, 17, 107, 199, 44, 17, 109, 199, 44, 17,
-    138, 199, 44, 17, 134, 199, 44, 17, 149, 199, 44, 17, 169, 199, 44, 17,
-    175, 199, 44, 17, 171, 199, 44, 17, 178, 199, 44, 246, 240, 251, 117,
-    199, 44, 246, 240, 221, 180, 220, 17, 1, 221, 67, 220, 17, 1, 221, 184,
-    200, 195, 220, 17, 1, 221, 184, 199, 197, 220, 17, 1, 210, 187, 231, 91,
-    220, 17, 1, 213, 249, 220, 17, 1, 242, 99, 220, 17, 1, 210, 187, 247, 1,
-    220, 17, 1, 202, 47, 199, 197, 220, 17, 1, 210, 187, 222, 252, 220, 17,
-    1, 212, 65, 220, 17, 1, 210, 187, 212, 101, 220, 17, 1, 210, 187, 197,
-    132, 220, 17, 1, 210, 187, 197, 120, 220, 17, 1, 210, 187, 237, 191, 220,
-    17, 1, 210, 187, 237, 175, 220, 17, 1, 210, 187, 213, 79, 220, 17, 1,
-    236, 174, 220, 17, 1, 159, 220, 17, 1, 198, 242, 200, 195, 220, 17, 1,
-    198, 242, 199, 197, 220, 17, 1, 210, 187, 237, 68, 220, 17, 1, 213, 43,
-    220, 17, 1, 248, 111, 220, 17, 1, 209, 73, 220, 17, 1, 209, 200, 200,
-    195, 220, 17, 1, 232, 176, 199, 197, 220, 17, 1, 209, 200, 199, 197, 220,
-    17, 1, 232, 176, 200, 195, 220, 17, 1, 210, 187, 248, 203, 220, 17, 1,
-    216, 12, 220, 17, 1, 192, 12, 220, 17, 1, 219, 44, 219, 105, 220, 17, 1,
-    219, 44, 219, 2, 220, 17, 1, 193, 48, 220, 17, 1, 205, 134, 203, 165,
-    220, 17, 1, 205, 134, 201, 175, 220, 17, 1, 202, 47, 200, 195, 220, 17,
-    1, 229, 24, 200, 195, 220, 17, 1, 210, 187, 219, 73, 220, 17, 1, 74, 220,
-    17, 1, 229, 24, 199, 197, 220, 17, 234, 120, 220, 17, 18, 3, 65, 220, 17,
-    18, 3, 217, 113, 222, 87, 220, 17, 18, 3, 252, 206, 220, 17, 18, 3, 251,
-    149, 220, 17, 18, 3, 68, 220, 17, 18, 3, 223, 199, 220, 17, 18, 3, 192,
-    159, 220, 17, 18, 3, 191, 176, 220, 17, 18, 3, 66, 220, 17, 18, 3, 196,
-    30, 220, 17, 3, 210, 187, 195, 40, 220, 17, 18, 3, 217, 113, 221, 44,
-    220, 17, 204, 20, 3, 219, 43, 220, 17, 204, 20, 3, 212, 65, 220, 17, 18,
-    3, 71, 220, 17, 18, 3, 234, 166, 220, 17, 18, 3, 74, 220, 17, 18, 3, 250,
-    131, 220, 17, 18, 3, 251, 236, 220, 17, 221, 68, 173, 220, 17, 163, 217,
-    113, 234, 147, 220, 17, 163, 217, 113, 198, 241, 220, 17, 163, 217, 113,
-    198, 193, 220, 17, 163, 217, 113, 247, 77, 220, 17, 247, 125, 77, 220,
-    17, 213, 192, 220, 17, 192, 110, 220, 17, 17, 191, 77, 220, 17, 17, 107,
-    220, 17, 17, 109, 220, 17, 17, 138, 220, 17, 17, 134, 220, 17, 17, 149,
-    220, 17, 17, 169, 220, 17, 17, 175, 220, 17, 17, 171, 220, 17, 17, 178,
-    220, 17, 229, 24, 213, 43, 220, 17, 229, 24, 216, 12, 220, 17, 1, 221,
-    185, 231, 3, 220, 17, 1, 221, 185, 212, 65, 86, 5, 211, 113, 86, 87, 230,
-    181, 192, 25, 216, 118, 197, 178, 65, 86, 87, 230, 181, 192, 25, 216,
-    118, 255, 207, 206, 167, 249, 19, 174, 86, 87, 230, 181, 192, 25, 216,
-    118, 255, 207, 230, 181, 197, 153, 174, 86, 87, 89, 192, 25, 216, 118,
-    216, 234, 174, 86, 87, 242, 215, 192, 25, 216, 118, 203, 172, 174, 86,
-    87, 247, 97, 192, 25, 216, 118, 209, 189, 203, 158, 174, 86, 87, 192, 25,
-    216, 118, 197, 153, 203, 158, 174, 86, 87, 205, 100, 203, 157, 86, 87,
-    248, 13, 192, 25, 216, 117, 86, 87, 248, 141, 203, 50, 192, 25, 216, 117,
-    86, 87, 223, 98, 197, 152, 86, 87, 237, 113, 197, 153, 248, 12, 86, 87,
-    203, 157, 86, 87, 212, 70, 203, 157, 86, 87, 197, 153, 203, 157, 86, 87,
-    212, 70, 197, 153, 203, 157, 86, 87, 206, 191, 243, 111, 201, 193, 203,
-    157, 86, 87, 207, 10, 230, 222, 203, 157, 86, 87, 247, 97, 255, 211, 206,
-    73, 216, 233, 179, 247, 128, 86, 87, 230, 181, 197, 152, 86, 219, 27, 3,
-    246, 255, 206, 72, 86, 219, 27, 3, 219, 157, 206, 72, 86, 250, 188, 3,
-    203, 168, 231, 168, 255, 212, 206, 72, 86, 250, 188, 3, 255, 209, 168,
-    86, 250, 188, 3, 205, 69, 197, 147, 86, 3, 207, 115, 236, 189, 231, 167,
-    86, 3, 207, 115, 236, 189, 231, 5, 86, 3, 207, 115, 236, 189, 230, 182,
-    86, 3, 207, 115, 214, 243, 231, 167, 86, 3, 207, 115, 214, 243, 231, 5,
-    86, 3, 207, 115, 236, 189, 207, 115, 214, 242, 86, 17, 191, 77, 86, 17,
-    107, 86, 17, 109, 86, 17, 138, 86, 17, 134, 86, 17, 149, 86, 17, 169, 86,
-    17, 175, 86, 17, 171, 86, 17, 178, 86, 17, 132, 107, 86, 17, 132, 109,
-    86, 17, 132, 138, 86, 17, 132, 134, 86, 17, 132, 149, 86, 17, 132, 169,
-    86, 17, 132, 175, 86, 17, 132, 171, 86, 17, 132, 178, 86, 17, 132, 191,
-    77, 86, 87, 248, 15, 206, 72, 86, 87, 214, 59, 247, 195, 212, 82, 191,
-    10, 86, 87, 247, 97, 255, 211, 206, 73, 247, 196, 216, 62, 247, 128, 86,
-    87, 214, 59, 247, 195, 203, 169, 206, 72, 86, 87, 243, 128, 216, 117, 86,
-    87, 197, 169, 255, 208, 86, 87, 230, 164, 206, 73, 230, 119, 86, 87, 230,
-    164, 206, 73, 230, 125, 86, 87, 251, 123, 221, 202, 230, 119, 86, 87,
-    251, 123, 221, 202, 230, 125, 86, 3, 192, 102, 197, 151, 86, 3, 217, 66,
-    197, 151, 86, 1, 155, 86, 1, 221, 215, 86, 1, 231, 240, 86, 1, 231, 91,
-    86, 1, 214, 68, 86, 1, 247, 160, 86, 1, 247, 1, 86, 1, 223, 32, 86, 1,
-    212, 101, 86, 1, 197, 132, 86, 1, 197, 120, 86, 1, 237, 191, 86, 1, 237,
-    175, 86, 1, 213, 79, 86, 1, 190, 190, 86, 1, 199, 49, 86, 1, 238, 32, 86,
-    1, 237, 68, 86, 1, 180, 86, 1, 168, 86, 1, 209, 228, 86, 1, 249, 153, 86,
-    1, 248, 203, 86, 1, 174, 86, 1, 197, 168, 86, 1, 197, 157, 86, 1, 235,
-    35, 86, 1, 235, 29, 86, 1, 193, 190, 86, 1, 191, 71, 86, 1, 191, 123, 86,
-    1, 255, 214, 86, 1, 170, 86, 1, 165, 86, 1, 173, 86, 1, 203, 165, 86, 1,
-    201, 175, 86, 1, 188, 86, 1, 140, 86, 1, 65, 86, 1, 220, 246, 86, 1, 232,
-    221, 165, 86, 1, 221, 101, 86, 1, 206, 109, 86, 18, 3, 252, 206, 86, 18,
-    3, 68, 86, 18, 3, 223, 199, 86, 18, 3, 66, 86, 18, 3, 196, 30, 86, 18, 3,
-    117, 146, 86, 18, 3, 117, 206, 110, 86, 18, 3, 117, 172, 86, 18, 3, 117,
-    219, 74, 86, 18, 3, 71, 86, 18, 3, 234, 188, 86, 18, 3, 74, 86, 18, 3,
-    211, 87, 86, 3, 206, 173, 201, 5, 214, 69, 206, 162, 86, 3, 206, 167,
-    249, 18, 86, 18, 3, 207, 18, 68, 86, 18, 3, 207, 18, 223, 199, 86, 3,
-    212, 82, 191, 11, 214, 251, 238, 32, 86, 3, 202, 61, 219, 240, 86, 87,
-    230, 72, 86, 87, 210, 178, 86, 3, 219, 243, 206, 72, 86, 3, 192, 107,
-    206, 72, 86, 3, 219, 244, 197, 169, 247, 128, 86, 3, 216, 236, 247, 128,
-    86, 3, 230, 185, 247, 129, 207, 8, 86, 3, 230, 185, 216, 220, 207, 8, 86,
-    3, 223, 93, 216, 236, 247, 128, 86, 200, 239, 3, 219, 244, 197, 169, 247,
-    128, 86, 200, 239, 3, 216, 236, 247, 128, 86, 200, 239, 3, 223, 93, 216,
-    236, 247, 128, 86, 200, 239, 1, 155, 86, 200, 239, 1, 221, 215, 86, 200,
-    239, 1, 231, 240, 86, 200, 239, 1, 231, 91, 86, 200, 239, 1, 214, 68, 86,
-    200, 239, 1, 247, 160, 86, 200, 239, 1, 247, 1, 86, 200, 239, 1, 223, 32,
-    86, 200, 239, 1, 212, 101, 86, 200, 239, 1, 197, 132, 86, 200, 239, 1,
-    197, 120, 86, 200, 239, 1, 237, 191, 86, 200, 239, 1, 237, 175, 86, 200,
-    239, 1, 213, 79, 86, 200, 239, 1, 190, 190, 86, 200, 239, 1, 199, 49, 86,
-    200, 239, 1, 238, 32, 86, 200, 239, 1, 237, 68, 86, 200, 239, 1, 180, 86,
-    200, 239, 1, 168, 86, 200, 239, 1, 209, 228, 86, 200, 239, 1, 249, 153,
-    86, 200, 239, 1, 248, 203, 86, 200, 239, 1, 174, 86, 200, 239, 1, 197,
-    168, 86, 200, 239, 1, 197, 157, 86, 200, 239, 1, 235, 35, 86, 200, 239,
-    1, 235, 29, 86, 200, 239, 1, 193, 190, 86, 200, 239, 1, 191, 71, 86, 200,
-    239, 1, 191, 123, 86, 200, 239, 1, 255, 214, 86, 200, 239, 1, 170, 86,
-    200, 239, 1, 165, 86, 200, 239, 1, 173, 86, 200, 239, 1, 203, 165, 86,
-    200, 239, 1, 201, 175, 86, 200, 239, 1, 188, 86, 200, 239, 1, 140, 86,
-    200, 239, 1, 65, 86, 200, 239, 1, 220, 246, 86, 200, 239, 1, 232, 221,
-    193, 190, 86, 200, 239, 1, 232, 221, 170, 86, 200, 239, 1, 232, 221, 165,
-    86, 220, 233, 206, 69, 221, 215, 86, 220, 233, 206, 69, 221, 216, 247,
-    196, 216, 62, 247, 128, 86, 247, 112, 3, 88, 249, 7, 86, 247, 112, 3,
-    156, 249, 7, 86, 247, 112, 3, 247, 116, 199, 135, 86, 247, 112, 3, 205,
-    99, 255, 213, 86, 16, 235, 105, 248, 10, 86, 16, 207, 114, 206, 174, 86,
-    16, 210, 206, 231, 166, 86, 16, 207, 114, 206, 175, 207, 10, 230, 221,
-    86, 16, 209, 189, 168, 86, 16, 213, 21, 248, 10, 86, 16, 213, 21, 248,
-    11, 212, 70, 255, 210, 86, 16, 213, 21, 248, 11, 230, 183, 255, 210, 86,
-    16, 213, 21, 248, 11, 247, 196, 255, 210, 86, 3, 207, 115, 214, 243, 207,
-    115, 236, 188, 86, 3, 207, 115, 214, 243, 230, 182, 86, 87, 248, 14, 203,
-    50, 231, 54, 216, 118, 207, 9, 86, 87, 216, 14, 192, 25, 231, 54, 216,
-    118, 207, 9, 86, 87, 212, 70, 197, 152, 86, 87, 89, 248, 44, 206, 164,
-    192, 25, 216, 118, 216, 234, 174, 86, 87, 242, 215, 248, 44, 206, 164,
-    192, 25, 216, 118, 203, 172, 174, 206, 207, 200, 155, 56, 219, 223, 200,
-    155, 56, 206, 207, 200, 155, 3, 4, 236, 138, 219, 223, 200, 155, 3, 4,
-    236, 138, 86, 87, 219, 235, 216, 237, 206, 72, 86, 87, 198, 18, 216, 237,
-    206, 72, 80, 1, 155, 80, 1, 221, 215, 80, 1, 231, 240, 80, 1, 231, 91,
-    80, 1, 214, 68, 80, 1, 247, 160, 80, 1, 247, 1, 80, 1, 223, 32, 80, 1,
-    222, 252, 80, 1, 212, 101, 80, 1, 213, 45, 80, 1, 197, 132, 80, 1, 197,
-    120, 80, 1, 237, 191, 80, 1, 237, 175, 80, 1, 213, 79, 80, 1, 190, 190,
-    80, 1, 199, 49, 80, 1, 238, 32, 80, 1, 237, 68, 80, 1, 180, 80, 1, 168,
-    80, 1, 209, 228, 80, 1, 249, 153, 80, 1, 248, 203, 80, 1, 174, 80, 1,
-    170, 80, 1, 165, 80, 1, 173, 80, 1, 193, 190, 80, 1, 188, 80, 1, 140, 80,
-    1, 219, 73, 80, 1, 65, 80, 1, 203, 139, 65, 80, 1, 68, 80, 1, 223, 199,
-    80, 1, 66, 80, 1, 196, 30, 80, 1, 71, 80, 1, 215, 232, 71, 80, 1, 74, 80,
-    1, 250, 163, 80, 18, 3, 199, 200, 252, 206, 80, 18, 3, 252, 206, 80, 18,
-    3, 68, 80, 18, 3, 223, 199, 80, 18, 3, 66, 80, 18, 3, 196, 30, 80, 18, 3,
-    71, 80, 18, 3, 251, 236, 80, 18, 3, 215, 232, 223, 199, 80, 18, 3, 215,
-    232, 74, 80, 18, 3, 235, 15, 58, 80, 3, 251, 71, 80, 3, 75, 60, 80, 3,
-    195, 35, 80, 3, 195, 40, 80, 3, 250, 214, 80, 120, 3, 216, 217, 170, 80,
-    120, 3, 216, 217, 165, 80, 120, 3, 216, 217, 193, 190, 80, 120, 3, 216,
-    217, 140, 80, 1, 230, 206, 188, 80, 17, 191, 77, 80, 17, 107, 80, 17,
-    109, 80, 17, 138, 80, 17, 134, 80, 17, 149, 80, 17, 169, 80, 17, 175, 80,
-    17, 171, 80, 17, 178, 80, 3, 219, 83, 205, 53, 80, 3, 205, 53, 80, 16,
-    219, 36, 80, 16, 242, 67, 80, 16, 252, 1, 80, 16, 231, 146, 80, 1, 203,
-    165, 80, 1, 201, 175, 80, 1, 117, 146, 80, 1, 117, 206, 110, 80, 1, 117,
-    172, 80, 1, 117, 219, 74, 80, 18, 3, 117, 146, 80, 18, 3, 117, 206, 110,
-    80, 18, 3, 117, 172, 80, 18, 3, 117, 219, 74, 80, 1, 215, 232, 214, 68,
-    80, 1, 215, 232, 222, 252, 80, 1, 215, 232, 249, 53, 80, 1, 215, 232,
-    249, 48, 80, 120, 3, 215, 232, 216, 217, 180, 80, 120, 3, 215, 232, 216,
-    217, 174, 80, 120, 3, 215, 232, 216, 217, 173, 80, 1, 203, 171, 222, 62,
-    203, 165, 80, 18, 3, 203, 171, 222, 62, 233, 242, 80, 163, 87, 203, 171,
-    222, 62, 230, 5, 80, 163, 87, 203, 171, 222, 62, 222, 23, 209, 199, 80,
-    1, 193, 102, 208, 116, 222, 62, 199, 49, 80, 1, 193, 102, 208, 116, 222,
-    62, 208, 122, 80, 18, 3, 193, 102, 208, 116, 222, 62, 233, 242, 80, 18,
-    3, 193, 102, 208, 116, 222, 62, 196, 152, 80, 3, 193, 102, 208, 116, 222,
-    62, 198, 78, 80, 3, 193, 102, 208, 116, 222, 62, 198, 77, 80, 3, 193,
-    102, 208, 116, 222, 62, 198, 76, 80, 3, 193, 102, 208, 116, 222, 62, 198,
-    75, 80, 3, 193, 102, 208, 116, 222, 62, 198, 74, 80, 1, 234, 202, 208,
-    116, 222, 62, 213, 79, 80, 1, 234, 202, 208, 116, 222, 62, 191, 183, 80,
-    1, 234, 202, 208, 116, 222, 62, 231, 56, 80, 18, 3, 231, 161, 222, 62,
-    68, 80, 18, 3, 222, 28, 211, 151, 80, 18, 3, 222, 28, 66, 80, 18, 3, 222,
-    28, 234, 188, 80, 1, 203, 139, 155, 80, 1, 203, 139, 221, 215, 80, 1,
-    203, 139, 231, 240, 80, 1, 203, 139, 247, 160, 80, 1, 203, 139, 191, 123,
-    80, 1, 203, 139, 212, 101, 80, 1, 203, 139, 238, 32, 80, 1, 203, 139,
-    180, 80, 1, 203, 139, 209, 228, 80, 1, 203, 139, 233, 109, 80, 1, 203,
-    139, 249, 153, 80, 1, 203, 139, 199, 49, 80, 1, 203, 139, 140, 80, 120,
-    3, 203, 139, 216, 217, 193, 190, 80, 18, 3, 203, 139, 252, 206, 80, 18,
-    3, 203, 139, 71, 80, 18, 3, 203, 139, 235, 15, 58, 80, 18, 3, 203, 139,
-    53, 192, 159, 80, 3, 203, 139, 198, 77, 80, 3, 203, 139, 198, 76, 80, 3,
-    203, 139, 198, 74, 80, 3, 203, 139, 198, 73, 80, 3, 203, 139, 238, 247,
-    198, 77, 80, 3, 203, 139, 238, 247, 198, 76, 80, 3, 203, 139, 238, 247,
-    234, 106, 198, 79, 80, 1, 206, 47, 210, 189, 233, 109, 80, 3, 206, 47,
-    210, 189, 198, 74, 80, 203, 139, 17, 191, 77, 80, 203, 139, 17, 107, 80,
-    203, 139, 17, 109, 80, 203, 139, 17, 138, 80, 203, 139, 17, 134, 80, 203,
-    139, 17, 149, 80, 203, 139, 17, 169, 80, 203, 139, 17, 175, 80, 203, 139,
-    17, 171, 80, 203, 139, 17, 178, 80, 3, 221, 206, 198, 78, 80, 3, 221,
-    206, 198, 76, 80, 18, 3, 251, 222, 65, 80, 18, 3, 251, 222, 251, 236, 80,
-    16, 203, 139, 107, 80, 16, 203, 139, 233, 215, 101, 6, 1, 251, 132, 101,
-    6, 1, 249, 101, 101, 6, 1, 231, 210, 101, 6, 1, 236, 150, 101, 6, 1, 234,
-    103, 101, 6, 1, 195, 49, 101, 6, 1, 191, 80, 101, 6, 1, 199, 193, 101, 6,
-    1, 223, 162, 101, 6, 1, 222, 87, 101, 6, 1, 220, 7, 101, 6, 1, 217, 90,
-    101, 6, 1, 214, 216, 101, 6, 1, 211, 104, 101, 6, 1, 210, 131, 101, 6, 1,
-    191, 67, 101, 6, 1, 207, 163, 101, 6, 1, 205, 142, 101, 6, 1, 199, 179,
-    101, 6, 1, 196, 113, 101, 6, 1, 209, 220, 101, 6, 1, 221, 200, 101, 6, 1,
-    231, 82, 101, 6, 1, 208, 81, 101, 6, 1, 203, 69, 101, 6, 1, 243, 81, 101,
-    6, 1, 247, 128, 101, 6, 1, 222, 234, 101, 6, 1, 243, 18, 101, 6, 1, 246,
-    241, 101, 6, 1, 192, 218, 101, 6, 1, 222, 249, 101, 6, 1, 230, 87, 101,
-    6, 1, 229, 245, 101, 6, 1, 229, 145, 101, 6, 1, 193, 125, 101, 6, 1, 230,
-    19, 101, 6, 1, 229, 11, 101, 6, 1, 192, 14, 101, 6, 1, 252, 14, 101, 1,
-    251, 132, 101, 1, 249, 101, 101, 1, 231, 210, 101, 1, 236, 150, 101, 1,
-    234, 103, 101, 1, 195, 49, 101, 1, 191, 80, 101, 1, 199, 193, 101, 1,
-    223, 162, 101, 1, 222, 87, 101, 1, 220, 7, 101, 1, 217, 90, 101, 1, 214,
-    216, 101, 1, 211, 104, 101, 1, 210, 131, 101, 1, 191, 67, 101, 1, 207,
-    163, 101, 1, 205, 142, 101, 1, 199, 179, 101, 1, 196, 113, 101, 1, 209,
-    220, 101, 1, 221, 200, 101, 1, 231, 82, 101, 1, 208, 81, 101, 1, 203, 69,
-    101, 1, 243, 81, 101, 1, 247, 128, 101, 1, 222, 234, 101, 1, 243, 18,
-    101, 1, 246, 241, 101, 1, 192, 218, 101, 1, 222, 249, 101, 1, 230, 87,
-    101, 1, 229, 245, 101, 1, 229, 145, 101, 1, 193, 125, 101, 1, 230, 19,
-    101, 1, 229, 11, 101, 1, 233, 23, 101, 1, 192, 14, 101, 1, 234, 123, 101,
-    1, 153, 231, 210, 101, 1, 251, 230, 101, 210, 128, 204, 10, 52, 1, 101,
-    214, 216, 101, 1, 252, 14, 101, 1, 230, 17, 56, 101, 1, 220, 116, 56, 30,
-    147, 221, 113, 30, 147, 201, 167, 30, 147, 213, 204, 30, 147, 198, 168,
-    30, 147, 201, 156, 30, 147, 206, 239, 30, 147, 216, 77, 30, 147, 209,
-    169, 30, 147, 201, 164, 30, 147, 202, 160, 30, 147, 201, 161, 30, 147,
-    223, 222, 30, 147, 243, 24, 30, 147, 201, 171, 30, 147, 243, 91, 30, 147,
-    221, 188, 30, 147, 199, 7, 30, 147, 209, 209, 30, 147, 229, 142, 30, 147,
-    213, 200, 30, 147, 201, 165, 30, 147, 213, 194, 30, 147, 213, 198, 30,
-    147, 198, 165, 30, 147, 206, 227, 30, 147, 201, 163, 30, 147, 206, 237,
-    30, 147, 222, 68, 30, 147, 216, 70, 30, 147, 222, 71, 30, 147, 209, 164,
-    30, 147, 209, 162, 30, 147, 209, 150, 30, 147, 209, 158, 30, 147, 209,
-    156, 30, 147, 209, 153, 30, 147, 209, 155, 30, 147, 209, 152, 30, 147,
-    209, 157, 30, 147, 209, 167, 30, 147, 209, 168, 30, 147, 209, 151, 30,
-    147, 209, 161, 30, 147, 222, 69, 30, 147, 222, 67, 30, 147, 202, 153, 30,
-    147, 202, 151, 30, 147, 202, 143, 30, 147, 202, 146, 30, 147, 202, 152,
-    30, 147, 202, 148, 30, 147, 202, 147, 30, 147, 202, 145, 30, 147, 202,
-    156, 30, 147, 202, 158, 30, 147, 202, 159, 30, 147, 202, 154, 30, 147,
-    202, 144, 30, 147, 202, 149, 30, 147, 202, 157, 30, 147, 243, 72, 30,
-    147, 243, 70, 30, 147, 247, 14, 30, 147, 247, 12, 30, 147, 210, 149, 30,
-    147, 223, 217, 30, 147, 223, 208, 30, 147, 223, 216, 30, 147, 223, 213,
-    30, 147, 223, 211, 30, 147, 223, 215, 30, 147, 201, 168, 30, 147, 223,
-    220, 30, 147, 223, 221, 30, 147, 223, 209, 30, 147, 223, 214, 30, 147,
-    192, 57, 30, 147, 243, 23, 30, 147, 243, 73, 30, 147, 243, 71, 30, 147,
-    247, 15, 30, 147, 247, 13, 30, 147, 243, 89, 30, 147, 243, 90, 30, 147,
-    243, 74, 30, 147, 247, 16, 30, 147, 209, 207, 30, 147, 222, 70, 30, 147,
-    201, 169, 30, 147, 192, 63, 30, 147, 221, 104, 30, 147, 213, 196, 30,
-    147, 213, 202, 30, 147, 213, 201, 30, 147, 198, 162, 30, 147, 233, 3, 30,
-    222, 174, 233, 3, 30, 222, 174, 65, 30, 222, 174, 252, 25, 30, 222, 174,
-    170, 30, 222, 174, 192, 129, 30, 222, 174, 234, 65, 30, 222, 174, 71, 30,
-    222, 174, 192, 67, 30, 222, 174, 192, 80, 30, 222, 174, 74, 30, 222, 174,
-    193, 190, 30, 222, 174, 193, 176, 30, 222, 174, 211, 151, 30, 222, 174,
-    192, 12, 30, 222, 174, 66, 30, 222, 174, 193, 107, 30, 222, 174, 193,
-    125, 30, 222, 174, 193, 86, 30, 222, 174, 191, 225, 30, 222, 174, 233,
-    242, 30, 222, 174, 192, 33, 30, 222, 174, 68, 30, 222, 174, 255, 202, 30,
-    222, 174, 255, 201, 30, 222, 174, 192, 143, 30, 222, 174, 192, 141, 30,
-    222, 174, 234, 63, 30, 222, 174, 234, 62, 30, 222, 174, 234, 64, 30, 222,
-    174, 192, 66, 30, 222, 174, 192, 65, 30, 222, 174, 212, 10, 30, 222, 174,
-    212, 11, 30, 222, 174, 212, 4, 30, 222, 174, 212, 9, 30, 222, 174, 212,
-    7, 30, 222, 174, 192, 0, 30, 222, 174, 191, 255, 30, 222, 174, 191, 254,
-    30, 222, 174, 192, 1, 30, 222, 174, 192, 2, 30, 222, 174, 196, 226, 30,
-    222, 174, 196, 225, 30, 222, 174, 196, 223, 30, 222, 174, 196, 219, 30,
-    222, 174, 196, 220, 30, 222, 174, 191, 220, 30, 222, 174, 191, 217, 30,
-    222, 174, 191, 218, 30, 222, 174, 191, 212, 30, 222, 174, 191, 213, 30,
-    222, 174, 191, 214, 30, 222, 174, 191, 216, 30, 222, 174, 233, 236, 30,
-    222, 174, 233, 238, 30, 222, 174, 192, 32, 30, 222, 174, 228, 69, 30,
-    222, 174, 228, 61, 30, 222, 174, 228, 64, 30, 222, 174, 228, 62, 30, 222,
-    174, 228, 66, 30, 222, 174, 228, 68, 30, 222, 174, 251, 25, 30, 222, 174,
-    251, 22, 30, 222, 174, 251, 20, 30, 222, 174, 251, 21, 30, 222, 174, 201,
-    172, 30, 222, 174, 255, 203, 30, 222, 174, 192, 142, 30, 222, 174, 192,
-    64, 30, 222, 174, 212, 6, 30, 222, 174, 212, 5, 30, 125, 221, 113, 30,
-    125, 201, 167, 30, 125, 221, 106, 30, 125, 213, 204, 30, 125, 213, 202,
-    30, 125, 213, 201, 30, 125, 198, 168, 30, 125, 206, 239, 30, 125, 206,
-    234, 30, 125, 206, 231, 30, 125, 206, 224, 30, 125, 206, 219, 30, 125,
-    206, 214, 30, 125, 206, 225, 30, 125, 206, 237, 30, 125, 216, 77, 30,
-    125, 209, 169, 30, 125, 209, 158, 30, 125, 202, 160, 30, 125, 201, 161,
-    30, 125, 223, 222, 30, 125, 243, 24, 30, 125, 243, 91, 30, 125, 221, 188,
-    30, 125, 199, 7, 30, 125, 209, 209, 30, 125, 229, 142, 30, 125, 221, 107,
-    30, 125, 221, 105, 30, 125, 213, 200, 30, 125, 213, 194, 30, 125, 213,
-    196, 30, 125, 213, 199, 30, 125, 213, 195, 30, 125, 198, 165, 30, 125,
-    198, 162, 30, 125, 206, 232, 30, 125, 206, 227, 30, 125, 206, 213, 30,
-    125, 206, 212, 30, 125, 201, 163, 30, 125, 206, 229, 30, 125, 206, 228,
-    30, 125, 206, 221, 30, 125, 206, 223, 30, 125, 206, 236, 30, 125, 206,
-    216, 30, 125, 206, 226, 30, 125, 206, 235, 30, 125, 206, 211, 30, 125,
-    216, 73, 30, 125, 216, 68, 30, 125, 216, 70, 30, 125, 216, 67, 30, 125,
-    216, 65, 30, 125, 216, 71, 30, 125, 216, 76, 30, 125, 216, 74, 30, 125,
-    222, 71, 30, 125, 209, 160, 30, 125, 209, 161, 30, 125, 209, 166, 30,
-    125, 222, 69, 30, 125, 202, 153, 30, 125, 202, 143, 30, 125, 202, 146,
-    30, 125, 202, 148, 30, 125, 210, 149, 30, 125, 223, 217, 30, 125, 223,
-    210, 30, 125, 201, 168, 30, 125, 223, 218, 30, 125, 192, 57, 30, 125,
-    192, 51, 30, 125, 192, 52, 30, 125, 209, 207, 30, 125, 222, 70, 30, 125,
-    229, 140, 30, 125, 229, 138, 30, 125, 229, 141, 30, 125, 229, 139, 30,
-    125, 192, 63, 30, 125, 221, 109, 30, 125, 221, 108, 30, 125, 221, 112,
-    30, 125, 221, 110, 30, 125, 221, 111, 30, 125, 201, 165, 36, 5, 140, 36,
-    5, 228, 159, 36, 5, 229, 158, 36, 5, 230, 91, 36, 5, 229, 215, 36, 5,
-    229, 245, 36, 5, 229, 23, 36, 5, 229, 14, 36, 5, 173, 36, 5, 218, 225,
-    36, 5, 219, 146, 36, 5, 220, 125, 36, 5, 219, 228, 36, 5, 219, 238, 36,
-    5, 219, 43, 36, 5, 218, 191, 36, 5, 229, 177, 36, 5, 229, 171, 36, 5,
-    229, 173, 36, 5, 229, 176, 36, 5, 229, 174, 36, 5, 229, 175, 36, 5, 229,
-    172, 36, 5, 229, 170, 36, 5, 174, 36, 5, 215, 155, 36, 5, 216, 100, 36,
-    5, 217, 151, 36, 5, 216, 211, 36, 5, 216, 232, 36, 5, 216, 12, 36, 5,
-    215, 80, 36, 5, 200, 54, 36, 5, 200, 48, 36, 5, 200, 50, 36, 5, 200, 53,
-    36, 5, 200, 51, 36, 5, 200, 52, 36, 5, 200, 49, 36, 5, 200, 47, 36, 5,
-    165, 36, 5, 206, 68, 36, 5, 207, 1, 36, 5, 207, 178, 36, 5, 207, 84, 36,
-    5, 207, 113, 36, 5, 206, 162, 36, 5, 206, 26, 36, 5, 188, 36, 5, 201, 4,
-    36, 5, 202, 222, 36, 5, 205, 197, 36, 5, 205, 50, 36, 5, 205, 68, 36, 5,
-    202, 46, 36, 5, 200, 150, 36, 5, 203, 165, 36, 5, 203, 5, 36, 5, 203, 81,
-    36, 5, 203, 160, 36, 5, 203, 111, 36, 5, 203, 113, 36, 5, 203, 56, 36, 5,
-    202, 240, 36, 5, 208, 96, 36, 5, 208, 33, 36, 5, 208, 57, 36, 5, 208, 95,
-    36, 5, 208, 74, 36, 5, 208, 75, 36, 5, 208, 45, 36, 5, 208, 44, 36, 5,
-    207, 240, 36, 5, 207, 236, 36, 5, 207, 239, 36, 5, 207, 237, 36, 5, 207,
-    238, 36, 5, 208, 71, 36, 5, 208, 63, 36, 5, 208, 66, 36, 5, 208, 70, 36,
-    5, 208, 67, 36, 5, 208, 68, 36, 5, 208, 65, 36, 5, 208, 62, 36, 5, 208,
-    58, 36, 5, 208, 61, 36, 5, 208, 59, 36, 5, 208, 60, 36, 5, 249, 153, 36,
-    5, 248, 10, 36, 5, 248, 188, 36, 5, 249, 151, 36, 5, 249, 1, 36, 5, 249,
-    17, 36, 5, 248, 111, 36, 5, 247, 210, 36, 5, 195, 188, 36, 5, 193, 249,
-    36, 5, 195, 69, 36, 5, 195, 187, 36, 5, 195, 148, 36, 5, 195, 153, 36, 5,
-    195, 24, 36, 5, 193, 238, 36, 5, 190, 190, 36, 5, 197, 94, 36, 5, 198,
-    193, 36, 5, 199, 245, 36, 5, 199, 121, 36, 5, 199, 145, 36, 5, 159, 36,
-    5, 197, 43, 36, 5, 247, 160, 36, 5, 238, 195, 36, 5, 243, 29, 36, 5, 247,
-    159, 36, 5, 247, 34, 36, 5, 247, 42, 36, 5, 242, 99, 36, 5, 238, 151, 36,
-    5, 192, 220, 36, 5, 192, 188, 36, 5, 192, 207, 36, 5, 192, 219, 36, 5,
-    192, 213, 36, 5, 192, 214, 36, 5, 192, 196, 36, 5, 192, 195, 36, 5, 192,
-    181, 36, 5, 192, 177, 36, 5, 192, 180, 36, 5, 192, 178, 36, 5, 192, 179,
-    36, 5, 180, 36, 5, 212, 178, 36, 5, 213, 219, 36, 5, 214, 250, 36, 5,
-    214, 110, 36, 5, 214, 121, 36, 5, 213, 43, 36, 5, 212, 110, 36, 5, 212,
-    101, 36, 5, 212, 58, 36, 5, 212, 81, 36, 5, 212, 100, 36, 5, 212, 89, 36,
-    5, 212, 90, 36, 5, 212, 65, 36, 5, 212, 48, 36, 5, 231, 11, 65, 36, 5,
-    231, 11, 66, 36, 5, 231, 11, 68, 36, 5, 231, 11, 252, 206, 36, 5, 231,
-    11, 234, 188, 36, 5, 231, 11, 71, 36, 5, 231, 11, 74, 36, 5, 231, 11,
-    193, 190, 36, 5, 155, 36, 5, 220, 232, 36, 5, 221, 166, 36, 5, 222, 127,
-    36, 5, 222, 13, 36, 5, 222, 22, 36, 5, 221, 67, 36, 5, 221, 62, 36, 5,
-    220, 179, 36, 5, 220, 172, 36, 5, 220, 178, 36, 5, 220, 173, 36, 5, 220,
-    174, 36, 5, 220, 165, 36, 5, 220, 159, 36, 5, 220, 161, 36, 5, 220, 164,
-    36, 5, 220, 162, 36, 5, 220, 163, 36, 5, 220, 160, 36, 5, 220, 158, 36,
-    5, 220, 154, 36, 5, 220, 157, 36, 5, 220, 155, 36, 5, 220, 156, 36, 5,
-    193, 190, 36, 5, 193, 0, 36, 5, 193, 86, 36, 5, 193, 181, 36, 5, 193,
-    114, 36, 5, 193, 125, 36, 5, 193, 48, 36, 5, 193, 40, 36, 5, 209, 219,
-    65, 36, 5, 209, 219, 66, 36, 5, 209, 219, 68, 36, 5, 209, 219, 252, 206,
-    36, 5, 209, 219, 234, 188, 36, 5, 209, 219, 71, 36, 5, 209, 219, 74, 36,
-    5, 191, 123, 36, 5, 190, 251, 36, 5, 191, 30, 36, 5, 191, 121, 36, 5,
-    191, 84, 36, 5, 191, 87, 36, 5, 191, 7, 36, 5, 190, 238, 36, 5, 191, 71,
-    36, 5, 191, 48, 36, 5, 191, 57, 36, 5, 191, 70, 36, 5, 191, 61, 36, 5,
-    191, 62, 36, 5, 191, 54, 36, 5, 191, 39, 36, 5, 170, 36, 5, 191, 225, 36,
-    5, 192, 33, 36, 5, 192, 140, 36, 5, 192, 77, 36, 5, 192, 80, 36, 5, 192,
-    12, 36, 5, 191, 252, 36, 5, 238, 32, 36, 5, 235, 89, 36, 5, 237, 44, 36,
-    5, 238, 31, 36, 5, 237, 131, 36, 5, 237, 146, 36, 5, 236, 174, 36, 5,
-    235, 46, 36, 5, 237, 191, 36, 5, 237, 156, 36, 5, 237, 168, 36, 5, 237,
-    190, 36, 5, 237, 178, 36, 5, 237, 179, 36, 5, 237, 161, 36, 5, 237, 147,
-    36, 5, 223, 32, 36, 5, 222, 182, 36, 5, 222, 244, 36, 5, 223, 31, 36, 5,
-    223, 8, 36, 5, 223, 10, 36, 5, 222, 201, 36, 5, 222, 160, 36, 5, 231,
-    240, 36, 5, 230, 179, 36, 5, 231, 53, 36, 5, 231, 237, 36, 5, 231, 157,
-    36, 5, 231, 165, 36, 5, 231, 3, 36, 5, 231, 2, 36, 5, 230, 135, 36, 5,
-    230, 131, 36, 5, 230, 134, 36, 5, 230, 132, 36, 5, 230, 133, 36, 5, 231,
-    127, 36, 5, 231, 107, 36, 5, 231, 117, 36, 5, 231, 126, 36, 5, 231, 121,
-    36, 5, 231, 122, 36, 5, 231, 111, 36, 5, 231, 96, 36, 5, 199, 49, 36, 5,
-    198, 213, 36, 5, 199, 11, 36, 5, 199, 48, 36, 5, 199, 31, 36, 5, 199, 33,
-    36, 5, 198, 241, 36, 5, 198, 204, 36, 5, 247, 1, 36, 5, 243, 48, 36, 5,
-    243, 95, 36, 5, 247, 0, 36, 5, 243, 123, 36, 5, 243, 127, 36, 5, 243, 68,
-    36, 5, 243, 37, 36, 5, 209, 228, 36, 5, 209, 191, 36, 5, 209, 211, 36, 5,
-    209, 227, 36, 5, 209, 213, 36, 5, 209, 214, 36, 5, 209, 199, 36, 5, 209,
-    187, 36, 5, 197, 168, 36, 5, 197, 140, 36, 5, 197, 146, 36, 5, 197, 167,
-    36, 5, 197, 160, 36, 5, 197, 161, 36, 5, 197, 144, 36, 5, 197, 138, 36,
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-    199, 221, 1, 214, 68, 199, 221, 1, 190, 190, 199, 221, 1, 238, 32, 199,
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-    95, 3, 209, 201, 215, 148, 95, 3, 221, 39, 95, 238, 170, 16, 206, 241,
-    95, 3, 250, 144, 95, 3, 250, 166, 95, 17, 191, 77, 95, 17, 107, 95, 17,
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-    17, 171, 95, 17, 178, 95, 16, 219, 205, 250, 168, 202, 19, 95, 16, 219,
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-    104, 1, 174, 104, 1, 173, 104, 1, 188, 104, 1, 203, 165, 104, 1, 190,
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-    255, 104, 1, 219, 159, 104, 1, 191, 57, 104, 1, 243, 95, 104, 1, 198, 88,
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-    198, 88, 174, 104, 1, 198, 88, 190, 190, 104, 1, 198, 88, 238, 32, 104,
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-    202, 214, 71, 104, 1, 202, 214, 68, 104, 1, 202, 214, 223, 44, 104, 1,
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-    104, 1, 202, 214, 155, 104, 1, 202, 214, 231, 240, 104, 1, 202, 214, 140,
-    104, 1, 202, 214, 168, 104, 1, 202, 214, 203, 165, 104, 1, 202, 214, 190,
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-    1, 251, 184, 231, 220, 155, 104, 1, 251, 184, 231, 220, 214, 68, 104, 1,
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-    1, 251, 184, 231, 220, 197, 120, 104, 1, 251, 184, 231, 220, 237, 191,
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-    104, 1, 217, 87, 251, 184, 231, 220, 222, 252, 104, 1, 217, 87, 251, 184,
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-    1, 217, 87, 251, 184, 231, 220, 190, 190, 104, 1, 217, 87, 251, 184, 231,
-    220, 237, 68, 104, 1, 217, 87, 251, 184, 231, 220, 201, 175, 104, 1, 217,
-    87, 251, 184, 231, 220, 238, 142, 104, 1, 217, 87, 251, 184, 231, 220,
-    191, 71, 104, 1, 217, 87, 251, 184, 231, 220, 191, 123, 104, 1, 251, 184,
-    231, 220, 132, 66, 104, 1, 251, 184, 231, 220, 132, 170, 104, 1, 217, 87,
-    251, 184, 231, 220, 248, 203, 104, 1, 251, 184, 231, 220, 238, 20, 104,
-    1, 217, 87, 251, 184, 231, 220, 219, 159, 21, 22, 210, 242, 21, 22, 250,
-    131, 21, 22, 252, 160, 21, 22, 193, 128, 21, 22, 208, 251, 21, 22, 210,
-    72, 21, 22, 208, 113, 21, 22, 199, 154, 21, 22, 222, 29, 21, 22, 220,
-    176, 21, 22, 217, 21, 21, 22, 212, 250, 21, 22, 214, 198, 21, 22, 219,
-    248, 21, 22, 201, 252, 21, 22, 205, 103, 21, 22, 203, 18, 21, 22, 203,
-    117, 21, 22, 202, 232, 21, 22, 191, 234, 21, 22, 192, 86, 21, 22, 207,
-    122, 21, 22, 212, 107, 21, 22, 211, 128, 212, 107, 21, 22, 212, 106, 21,
-    22, 211, 128, 212, 106, 21, 22, 212, 105, 21, 22, 211, 128, 212, 105, 21,
-    22, 212, 104, 21, 22, 211, 128, 212, 104, 21, 22, 206, 22, 21, 22, 206,
-    21, 21, 22, 206, 20, 21, 22, 206, 19, 21, 22, 206, 18, 21, 22, 206, 26,
-    21, 22, 211, 128, 210, 236, 21, 22, 211, 128, 200, 43, 21, 22, 211, 128,
-    222, 152, 21, 22, 211, 128, 247, 193, 21, 22, 211, 128, 218, 168, 21, 22,
-    211, 128, 215, 61, 21, 22, 211, 128, 206, 8, 21, 22, 211, 128, 203, 167,
-    21, 22, 234, 202, 193, 224, 21, 22, 193, 102, 193, 224, 21, 22, 53, 2,
-    206, 188, 21, 22, 53, 207, 147, 236, 140, 21, 22, 207, 221, 206, 23, 21,
-    22, 193, 103, 219, 8, 21, 22, 193, 103, 220, 125, 21, 22, 198, 202, 21,
-    22, 198, 204, 21, 22, 197, 112, 21, 22, 197, 114, 21, 22, 197, 119, 21,
-    22, 198, 105, 21, 22, 198, 107, 21, 22, 205, 101, 202, 237, 21, 22, 205,
-    101, 203, 48, 21, 22, 205, 101, 228, 252, 21, 22, 98, 230, 130, 21, 22,
-    98, 237, 103, 231, 157, 21, 22, 98, 231, 237, 21, 22, 98, 230, 135, 21,
-    22, 205, 101, 222, 162, 21, 22, 98, 222, 160, 21, 22, 249, 5, 237, 103,
-    172, 21, 22, 249, 5, 237, 103, 146, 21, 22, 98, 237, 98, 206, 8, 219,
-    122, 195, 1, 219, 175, 219, 122, 1, 155, 219, 122, 1, 221, 215, 219, 122,
-    1, 231, 240, 219, 122, 1, 231, 91, 219, 122, 1, 214, 68, 219, 122, 1,
-    247, 160, 219, 122, 1, 247, 1, 219, 122, 1, 223, 32, 219, 122, 1, 222,
-    252, 219, 122, 1, 192, 108, 219, 122, 1, 190, 190, 219, 122, 1, 199, 49,
-    219, 122, 1, 238, 32, 219, 122, 1, 237, 68, 219, 122, 1, 180, 219, 122,
-    1, 168, 219, 122, 1, 209, 228, 219, 122, 1, 249, 153, 219, 122, 1, 248,
-    203, 219, 122, 1, 174, 219, 122, 1, 170, 219, 122, 1, 165, 219, 122, 1,
-    173, 219, 122, 1, 193, 190, 219, 122, 1, 203, 165, 219, 122, 1, 201, 175,
-    219, 122, 1, 188, 219, 122, 1, 140, 219, 122, 1, 230, 126, 219, 122, 1,
-    198, 26, 219, 122, 18, 3, 65, 219, 122, 18, 3, 68, 219, 122, 18, 3, 66,
-    219, 122, 18, 3, 234, 188, 219, 122, 18, 3, 251, 236, 219, 122, 18, 3,
-    211, 87, 219, 122, 18, 3, 250, 163, 219, 122, 18, 3, 71, 219, 122, 18, 3,
-    74, 219, 122, 200, 239, 1, 170, 219, 122, 200, 239, 1, 165, 219, 122,
-    200, 239, 1, 193, 190, 219, 122, 2, 1, 155, 219, 122, 2, 1, 214, 68, 219,
-    122, 2, 1, 251, 71, 219, 122, 2, 1, 190, 190, 219, 122, 2, 1, 180, 219,
-    122, 2, 1, 168, 219, 122, 2, 1, 174, 219, 122, 2, 1, 165, 219, 122, 2, 1,
-    173, 219, 122, 3, 215, 134, 219, 122, 3, 222, 1, 219, 122, 3, 205, 198,
-    219, 122, 3, 219, 8, 219, 122, 233, 216, 77, 219, 122, 208, 13, 77, 219,
-    122, 17, 191, 77, 219, 122, 17, 107, 219, 122, 17, 109, 219, 122, 17,
-    138, 219, 122, 17, 134, 219, 122, 17, 149, 219, 122, 17, 169, 219, 122,
-    17, 175, 219, 122, 17, 171, 219, 122, 17, 178, 54, 219, 239, 1, 155, 54,
-    219, 239, 1, 192, 220, 54, 219, 239, 1, 214, 68, 54, 219, 239, 1, 197,
-    168, 54, 219, 239, 1, 188, 54, 219, 239, 1, 170, 54, 219, 239, 1, 190,
-    190, 54, 219, 239, 1, 199, 49, 54, 219, 239, 1, 173, 54, 219, 239, 1,
-    168, 54, 219, 239, 1, 209, 228, 54, 219, 239, 1, 174, 54, 219, 239, 1,
-    233, 109, 54, 219, 239, 1, 195, 188, 54, 219, 239, 1, 140, 54, 219, 239,
-    1, 208, 96, 54, 219, 239, 1, 221, 215, 54, 219, 239, 1, 197, 157, 54,
-    219, 239, 1, 180, 54, 219, 239, 1, 65, 54, 219, 239, 1, 68, 54, 219, 239,
-    1, 234, 188, 54, 219, 239, 1, 234, 173, 54, 219, 239, 1, 66, 54, 219,
-    239, 1, 211, 87, 54, 219, 239, 1, 74, 54, 219, 239, 1, 196, 152, 54, 219,
-    239, 1, 71, 54, 219, 239, 1, 250, 161, 54, 219, 239, 1, 251, 236, 54,
-    219, 239, 1, 198, 77, 54, 219, 239, 1, 198, 76, 54, 219, 239, 1, 198, 75,
-    54, 219, 239, 1, 198, 74, 54, 219, 239, 1, 198, 73, 214, 80, 54, 218,
-    219, 1, 137, 208, 96, 214, 80, 54, 218, 219, 1, 130, 208, 96, 214, 80,
-    54, 218, 219, 1, 137, 155, 214, 80, 54, 218, 219, 1, 137, 192, 220, 214,
-    80, 54, 218, 219, 1, 137, 214, 68, 214, 80, 54, 218, 219, 1, 130, 155,
-    214, 80, 54, 218, 219, 1, 130, 192, 220, 214, 80, 54, 218, 219, 1, 130,
-    214, 68, 214, 80, 54, 218, 219, 1, 137, 197, 168, 214, 80, 54, 218, 219,
-    1, 137, 188, 214, 80, 54, 218, 219, 1, 137, 170, 214, 80, 54, 218, 219,
-    1, 130, 197, 168, 214, 80, 54, 218, 219, 1, 130, 188, 214, 80, 54, 218,
-    219, 1, 130, 170, 214, 80, 54, 218, 219, 1, 137, 190, 190, 214, 80, 54,
-    218, 219, 1, 137, 199, 49, 214, 80, 54, 218, 219, 1, 137, 180, 214, 80,
-    54, 218, 219, 1, 130, 190, 190, 214, 80, 54, 218, 219, 1, 130, 199, 49,
-    214, 80, 54, 218, 219, 1, 130, 180, 214, 80, 54, 218, 219, 1, 137, 168,
-    214, 80, 54, 218, 219, 1, 137, 209, 228, 214, 80, 54, 218, 219, 1, 137,
-    174, 214, 80, 54, 218, 219, 1, 130, 168, 214, 80, 54, 218, 219, 1, 130,
-    209, 228, 214, 80, 54, 218, 219, 1, 130, 174, 214, 80, 54, 218, 219, 1,
-    137, 233, 109, 214, 80, 54, 218, 219, 1, 137, 195, 188, 214, 80, 54, 218,
-    219, 1, 137, 173, 214, 80, 54, 218, 219, 1, 130, 233, 109, 214, 80, 54,
-    218, 219, 1, 130, 195, 188, 214, 80, 54, 218, 219, 1, 130, 173, 214, 80,
-    54, 218, 219, 1, 137, 140, 214, 80, 54, 218, 219, 1, 137, 238, 32, 214,
-    80, 54, 218, 219, 1, 137, 249, 153, 214, 80, 54, 218, 219, 1, 130, 140,
-    214, 80, 54, 218, 219, 1, 130, 238, 32, 214, 80, 54, 218, 219, 1, 130,
-    249, 153, 214, 80, 54, 218, 219, 1, 137, 220, 181, 214, 80, 54, 218, 219,
-    1, 137, 192, 185, 214, 80, 54, 218, 219, 1, 130, 220, 181, 214, 80, 54,
-    218, 219, 1, 130, 192, 185, 214, 80, 54, 218, 219, 1, 137, 200, 251, 214,
-    80, 54, 218, 219, 1, 130, 200, 251, 214, 80, 54, 218, 219, 18, 3, 18,
-    203, 28, 214, 80, 54, 218, 219, 18, 3, 252, 206, 214, 80, 54, 218, 219,
-    18, 3, 223, 199, 214, 80, 54, 218, 219, 18, 3, 66, 214, 80, 54, 218, 219,
-    18, 3, 196, 30, 214, 80, 54, 218, 219, 18, 3, 71, 214, 80, 54, 218, 219,
-    18, 3, 252, 25, 214, 80, 54, 218, 219, 18, 3, 74, 214, 80, 54, 218, 219,
-    18, 3, 211, 182, 214, 80, 54, 218, 219, 18, 3, 196, 152, 214, 80, 54,
-    218, 219, 18, 3, 250, 131, 214, 80, 54, 218, 219, 18, 3, 252, 160, 214,
-    80, 54, 218, 219, 18, 3, 196, 21, 214, 80, 54, 218, 219, 18, 3, 210, 242,
-    214, 80, 54, 218, 219, 18, 3, 211, 179, 214, 80, 54, 218, 219, 18, 3,
-    196, 144, 214, 80, 54, 218, 219, 18, 3, 223, 44, 214, 80, 54, 218, 219,
-    1, 53, 196, 12, 214, 80, 54, 218, 219, 1, 53, 214, 70, 214, 80, 54, 218,
-    219, 1, 53, 215, 61, 214, 80, 54, 218, 219, 1, 53, 218, 168, 214, 80, 54,
-    218, 219, 1, 53, 222, 152, 214, 80, 54, 218, 219, 1, 53, 238, 127, 214,
-    80, 54, 218, 219, 1, 53, 250, 120, 214, 80, 54, 218, 219, 163, 217, 55,
-    214, 80, 54, 218, 219, 163, 217, 54, 214, 80, 54, 218, 219, 17, 191, 77,
-    214, 80, 54, 218, 219, 17, 107, 214, 80, 54, 218, 219, 17, 109, 214, 80,
-    54, 218, 219, 17, 138, 214, 80, 54, 218, 219, 17, 134, 214, 80, 54, 218,
-    219, 17, 149, 214, 80, 54, 218, 219, 17, 169, 214, 80, 54, 218, 219, 17,
-    175, 214, 80, 54, 218, 219, 17, 171, 214, 80, 54, 218, 219, 17, 178, 214,
-    80, 54, 218, 219, 128, 17, 107, 214, 80, 54, 218, 219, 3, 220, 107, 214,
-    80, 54, 218, 219, 3, 220, 106, 95, 16, 210, 84, 95, 16, 215, 113, 221,
-    58, 95, 16, 209, 146, 221, 58, 95, 16, 248, 241, 221, 58, 95, 16, 247,
-    237, 221, 58, 95, 16, 208, 246, 221, 58, 95, 16, 208, 240, 221, 58, 95,
-    16, 208, 238, 221, 58, 95, 16, 208, 244, 221, 58, 95, 16, 208, 242, 221,
-    58, 95, 16, 237, 232, 221, 58, 95, 16, 237, 228, 221, 58, 95, 16, 237,
-    227, 221, 58, 95, 16, 237, 230, 221, 58, 95, 16, 237, 229, 221, 58, 95,
-    16, 237, 226, 221, 58, 95, 16, 197, 51, 95, 16, 215, 113, 206, 149, 95,
-    16, 209, 146, 206, 149, 95, 16, 248, 241, 206, 149, 95, 16, 247, 237,
-    206, 149, 95, 16, 208, 246, 206, 149, 95, 16, 208, 240, 206, 149, 95, 16,
-    208, 238, 206, 149, 95, 16, 208, 244, 206, 149, 95, 16, 208, 242, 206,
-    149, 95, 16, 237, 232, 206, 149, 95, 16, 237, 228, 206, 149, 95, 16, 237,
-    227, 206, 149, 95, 16, 237, 230, 206, 149, 95, 16, 237, 229, 206, 149,
-    95, 16, 237, 226, 206, 149, 248, 1, 1, 155, 248, 1, 1, 231, 240, 248, 1,
-    1, 214, 68, 248, 1, 1, 214, 11, 248, 1, 1, 168, 248, 1, 1, 249, 153, 248,
-    1, 1, 174, 248, 1, 1, 215, 166, 248, 1, 1, 190, 190, 248, 1, 1, 238, 32,
-    248, 1, 1, 180, 248, 1, 1, 212, 244, 248, 1, 1, 247, 160, 248, 1, 1, 223,
-    32, 248, 1, 1, 212, 101, 248, 1, 1, 212, 92, 248, 1, 1, 170, 248, 1, 1,
-    165, 248, 1, 1, 173, 248, 1, 1, 195, 188, 248, 1, 1, 188, 248, 1, 1, 65,
-    248, 1, 1, 140, 248, 1, 18, 3, 68, 248, 1, 18, 3, 66, 248, 1, 18, 3, 71,
-    248, 1, 18, 3, 74, 248, 1, 18, 3, 252, 25, 248, 1, 210, 184, 248, 1, 234,
-    95, 79, 205, 53, 54, 128, 1, 137, 155, 54, 128, 1, 137, 221, 215, 54,
-    128, 1, 137, 220, 165, 54, 128, 1, 130, 155, 54, 128, 1, 130, 220, 165,
-    54, 128, 1, 130, 221, 215, 54, 128, 1, 214, 68, 54, 128, 1, 137, 247,
-    160, 54, 128, 1, 137, 247, 1, 54, 128, 1, 130, 247, 160, 54, 128, 1, 130,
-    188, 54, 128, 1, 130, 247, 1, 54, 128, 1, 212, 101, 54, 128, 1, 207, 129,
-    54, 128, 1, 137, 207, 127, 54, 128, 1, 238, 32, 54, 128, 1, 130, 207,
-    127, 54, 128, 1, 207, 138, 54, 128, 1, 137, 190, 190, 54, 128, 1, 137,
-    199, 49, 54, 128, 1, 130, 190, 190, 54, 128, 1, 130, 199, 49, 54, 128, 1,
-    180, 54, 128, 1, 249, 153, 54, 128, 1, 137, 168, 54, 128, 1, 137, 209,
-    228, 54, 128, 1, 137, 233, 109, 54, 128, 1, 130, 168, 54, 128, 1, 130,
-    233, 109, 54, 128, 1, 130, 209, 228, 54, 128, 1, 174, 54, 128, 1, 130,
-    170, 54, 128, 1, 137, 170, 54, 128, 1, 165, 54, 128, 1, 206, 57, 54, 128,
-    1, 173, 54, 128, 1, 218, 218, 54, 128, 1, 193, 190, 54, 128, 1, 137, 203,
-    165, 54, 128, 1, 137, 201, 175, 54, 128, 1, 137, 188, 54, 128, 1, 137,
-    140, 54, 128, 1, 219, 73, 54, 128, 1, 65, 54, 128, 1, 130, 140, 54, 128,
-    1, 68, 54, 128, 1, 223, 199, 54, 128, 1, 66, 54, 128, 1, 196, 30, 54,
-    128, 1, 234, 188, 54, 128, 1, 211, 87, 54, 128, 1, 220, 107, 54, 128, 1,
-    230, 206, 188, 54, 128, 120, 3, 216, 217, 165, 54, 128, 120, 3, 216, 217,
-    173, 54, 128, 120, 3, 220, 126, 199, 190, 220, 96, 54, 128, 3, 217, 113,
-    222, 84, 220, 96, 54, 128, 120, 3, 53, 214, 68, 54, 128, 120, 3, 130,
-    168, 54, 128, 120, 3, 137, 207, 128, 211, 57, 130, 168, 54, 128, 120, 3,
-    174, 54, 128, 120, 3, 249, 153, 54, 128, 120, 3, 188, 54, 128, 3, 205,
-    172, 54, 128, 18, 3, 65, 54, 128, 18, 3, 217, 113, 205, 122, 54, 128, 18,
-    3, 252, 206, 54, 128, 18, 3, 199, 200, 252, 206, 54, 128, 18, 3, 68, 54,
-    128, 18, 3, 223, 199, 54, 128, 18, 3, 196, 152, 54, 128, 18, 3, 196, 29,
-    54, 128, 18, 3, 66, 54, 128, 18, 3, 196, 30, 54, 128, 18, 3, 74, 54, 128,
-    18, 3, 211, 183, 60, 54, 128, 18, 3, 210, 242, 54, 128, 18, 3, 71, 54,
-    128, 18, 3, 252, 25, 54, 128, 18, 3, 211, 87, 54, 128, 18, 3, 251, 236,
-    54, 128, 18, 3, 128, 251, 236, 54, 128, 18, 3, 211, 183, 58, 54, 128, 3,
-    217, 113, 222, 83, 54, 128, 3, 198, 78, 54, 128, 3, 198, 77, 54, 128, 3,
-    221, 171, 198, 76, 54, 128, 3, 221, 171, 198, 75, 54, 128, 3, 221, 171,
-    198, 74, 54, 128, 3, 207, 186, 230, 90, 54, 128, 3, 217, 113, 205, 152,
-    54, 128, 3, 221, 170, 222, 64, 54, 128, 33, 238, 198, 236, 140, 54, 128,
-    228, 243, 17, 191, 77, 54, 128, 228, 243, 17, 107, 54, 128, 228, 243, 17,
-    109, 54, 128, 228, 243, 17, 138, 54, 128, 228, 243, 17, 134, 54, 128,
-    228, 243, 17, 149, 54, 128, 228, 243, 17, 169, 54, 128, 228, 243, 17,
-    175, 54, 128, 228, 243, 17, 171, 54, 128, 228, 243, 17, 178, 54, 128,
-    128, 17, 191, 77, 54, 128, 128, 17, 107, 54, 128, 128, 17, 109, 54, 128,
-    128, 17, 138, 54, 128, 128, 17, 134, 54, 128, 128, 17, 149, 54, 128, 128,
-    17, 169, 54, 128, 128, 17, 175, 54, 128, 128, 17, 171, 54, 128, 128, 17,
-    178, 54, 128, 3, 193, 80, 54, 128, 3, 193, 79, 54, 128, 3, 205, 107, 54,
-    128, 3, 221, 246, 54, 128, 3, 228, 170, 54, 128, 3, 236, 157, 54, 128, 3,
-    207, 18, 206, 122, 207, 138, 54, 128, 3, 217, 113, 192, 109, 54, 128, 3,
-    222, 120, 54, 128, 3, 222, 119, 54, 128, 3, 205, 117, 54, 128, 3, 205,
-    116, 54, 128, 3, 230, 26, 54, 128, 3, 247, 157, 33, 235, 128, 243, 2,
-    252, 60, 33, 237, 41, 33, 223, 139, 33, 235, 119, 57, 33, 197, 225, 236,
-    140, 33, 192, 233, 60, 33, 193, 72, 219, 113, 60, 33, 211, 77, 87, 60,
-    33, 55, 211, 77, 87, 60, 33, 156, 247, 23, 201, 28, 60, 33, 201, 14, 247,
-    23, 201, 28, 60, 33, 210, 115, 58, 33, 55, 210, 115, 58, 33, 210, 115,
-    60, 33, 210, 115, 210, 255, 33, 8, 2, 1, 193, 225, 60, 33, 8, 2, 1, 153,
-    193, 225, 60, 33, 45, 210, 114, 93, 219, 224, 33, 50, 210, 114, 93, 183,
-    33, 45, 210, 114, 248, 233, 219, 224, 33, 50, 210, 114, 248, 233, 183,
-    33, 51, 248, 51, 58, 33, 31, 3, 58, 33, 223, 93, 55, 251, 15, 58, 33,
-    108, 3, 58, 33, 55, 108, 3, 58, 33, 55, 108, 3, 60, 33, 197, 225, 252,
-    47, 252, 60, 33, 8, 2, 1, 223, 115, 232, 51, 33, 8, 2, 1, 223, 115, 146,
-    33, 8, 2, 1, 223, 115, 200, 43, 148, 3, 196, 123, 206, 244, 148, 3, 196,
-    123, 247, 121, 148, 3, 247, 38, 148, 3, 200, 173, 148, 3, 248, 155, 148,
-    1, 251, 214, 148, 1, 251, 215, 199, 123, 148, 1, 223, 194, 148, 1, 223,
-    195, 199, 123, 148, 1, 196, 126, 148, 1, 196, 127, 199, 123, 148, 1, 207,
-    186, 207, 51, 148, 1, 207, 186, 207, 52, 199, 123, 148, 1, 220, 126, 219,
-    199, 148, 1, 220, 126, 219, 200, 199, 123, 148, 1, 234, 145, 148, 1, 251,
-    233, 148, 1, 211, 123, 148, 1, 211, 124, 199, 123, 148, 1, 155, 148, 1,
-    222, 142, 217, 116, 148, 1, 231, 240, 148, 1, 231, 241, 230, 241, 148, 1,
-    214, 68, 148, 1, 247, 160, 148, 1, 247, 161, 220, 112, 148, 1, 223, 32,
-    148, 1, 223, 33, 223, 0, 148, 1, 212, 101, 148, 1, 199, 252, 220, 2, 148,
-    1, 199, 252, 215, 108, 217, 116, 148, 1, 238, 33, 215, 108, 251, 162,
-    148, 1, 238, 33, 215, 108, 217, 116, 148, 1, 215, 7, 207, 141, 148, 1,
-    190, 190, 148, 1, 199, 252, 199, 158, 148, 1, 238, 32, 148, 1, 238, 33,
-    217, 138, 148, 1, 180, 148, 1, 168, 148, 1, 210, 221, 222, 76, 148, 1,
-    249, 153, 148, 1, 249, 154, 222, 2, 148, 1, 174, 148, 1, 170, 148, 1,
-    165, 148, 1, 173, 148, 1, 193, 190, 148, 1, 205, 207, 205, 184, 148, 1,
-    205, 207, 205, 129, 148, 1, 188, 148, 1, 140, 148, 3, 207, 41, 148, 18,
-    3, 199, 123, 148, 18, 3, 196, 122, 148, 18, 3, 196, 123, 205, 125, 148,
-    18, 3, 200, 208, 148, 18, 3, 200, 209, 223, 185, 148, 18, 3, 207, 186,
-    207, 51, 148, 18, 3, 207, 186, 207, 52, 199, 123, 148, 18, 3, 220, 126,
-    219, 199, 148, 18, 3, 220, 126, 219, 200, 199, 123, 148, 18, 3, 199, 201,
-    148, 18, 3, 199, 202, 207, 51, 148, 18, 3, 199, 202, 199, 123, 148, 18,
-    3, 199, 202, 207, 52, 199, 123, 148, 18, 3, 210, 16, 148, 18, 3, 210, 17,
-    199, 123, 148, 252, 37, 252, 36, 148, 1, 222, 107, 205, 124, 148, 1, 221,
-    177, 205, 124, 148, 1, 196, 235, 205, 124, 148, 1, 234, 182, 205, 124,
-    148, 1, 195, 154, 205, 124, 148, 1, 191, 109, 205, 124, 148, 1, 250, 185,
-    205, 124, 148, 1, 251, 14, 222, 202, 148, 17, 191, 77, 148, 17, 107, 148,
-    17, 109, 148, 17, 138, 148, 17, 134, 148, 17, 149, 148, 17, 169, 148, 17,
-    175, 148, 17, 171, 148, 17, 178, 148, 210, 145, 148, 210, 175, 148, 193,
-    64, 148, 247, 94, 210, 168, 148, 247, 94, 202, 190, 148, 247, 94, 210,
-    112, 148, 210, 174, 148, 37, 16, 236, 148, 148, 37, 16, 237, 102, 148,
-    37, 16, 235, 71, 148, 37, 16, 237, 236, 148, 37, 16, 237, 237, 200, 173,
-    148, 37, 16, 236, 242, 148, 37, 16, 238, 24, 148, 37, 16, 237, 77, 148,
-    37, 16, 238, 6, 148, 37, 16, 237, 237, 231, 159, 148, 37, 16, 33, 199,
-    116, 148, 37, 16, 33, 234, 92, 148, 37, 16, 33, 221, 253, 148, 37, 16,
-    33, 221, 255, 148, 37, 16, 33, 223, 5, 148, 37, 16, 33, 221, 254, 4, 223,
-    5, 148, 37, 16, 33, 222, 0, 4, 223, 5, 148, 37, 16, 33, 248, 226, 148,
-    37, 16, 33, 230, 247, 148, 37, 16, 206, 206, 211, 77, 235, 82, 148, 37,
-    16, 206, 206, 211, 77, 238, 22, 148, 37, 16, 206, 206, 242, 219, 197, 80,
-    148, 37, 16, 206, 206, 242, 219, 199, 211, 148, 37, 16, 219, 222, 211,
-    77, 210, 160, 148, 37, 16, 219, 222, 211, 77, 208, 149, 148, 37, 16, 219,
-    222, 242, 219, 209, 104, 148, 37, 16, 219, 222, 242, 219, 209, 86, 148,
-    37, 16, 219, 222, 211, 77, 209, 132, 148, 210, 146, 220, 19, 148, 210,
-    176, 220, 19, 200, 197, 3, 210, 142, 200, 197, 3, 210, 156, 200, 197, 3,
-    210, 152, 200, 197, 1, 65, 200, 197, 1, 68, 200, 197, 1, 66, 200, 197, 1,
-    252, 25, 200, 197, 1, 74, 200, 197, 1, 71, 200, 197, 1, 233, 242, 200,
-    197, 1, 155, 200, 197, 1, 208, 96, 200, 197, 1, 231, 240, 200, 197, 1,
-    214, 68, 200, 197, 1, 247, 160, 200, 197, 1, 223, 32, 200, 197, 1, 191,
-    123, 200, 197, 1, 212, 101, 200, 197, 1, 190, 190, 200, 197, 1, 238, 32,
-    200, 197, 1, 180, 200, 197, 1, 168, 200, 197, 1, 233, 109, 200, 197, 1,
-    195, 188, 200, 197, 1, 249, 153, 200, 197, 1, 174, 200, 197, 1, 170, 200,
-    197, 1, 165, 200, 197, 1, 173, 200, 197, 1, 193, 190, 200, 197, 1, 188,
-    200, 197, 1, 192, 220, 200, 197, 1, 140, 200, 197, 120, 3, 210, 172, 200,
-    197, 120, 3, 210, 144, 200, 197, 120, 3, 210, 141, 200, 197, 18, 3, 210,
-    159, 200, 197, 18, 3, 210, 140, 200, 197, 18, 3, 210, 165, 200, 197, 18,
-    3, 210, 151, 200, 197, 18, 3, 210, 173, 200, 197, 18, 3, 210, 161, 200,
-    197, 3, 210, 177, 200, 197, 3, 195, 40, 200, 197, 120, 3, 210, 100, 174,
-    200, 197, 120, 3, 210, 100, 193, 190, 200, 197, 1, 221, 215, 200, 197, 1,
-    200, 126, 200, 197, 17, 191, 77, 200, 197, 17, 107, 200, 197, 17, 109,
-    200, 197, 17, 138, 200, 197, 17, 134, 200, 197, 17, 149, 200, 197, 17,
-    169, 200, 197, 17, 175, 200, 197, 17, 171, 200, 197, 17, 178, 200, 197,
-    250, 145, 200, 197, 1, 207, 21, 200, 197, 1, 219, 172, 200, 197, 1, 248,
-    203, 200, 197, 1, 53, 222, 152, 200, 197, 1, 53, 218, 168, 249, 63, 1,
-    65, 249, 63, 1, 202, 182, 65, 249, 63, 1, 140, 249, 63, 1, 202, 182, 140,
-    249, 63, 1, 217, 85, 140, 249, 63, 1, 249, 153, 249, 63, 1, 222, 61, 249,
-    153, 249, 63, 1, 168, 249, 63, 1, 202, 182, 168, 249, 63, 1, 180, 249,
-    63, 1, 217, 85, 180, 249, 63, 1, 193, 190, 249, 63, 1, 202, 182, 193,
-    190, 249, 63, 1, 210, 193, 193, 190, 249, 63, 1, 231, 240, 249, 63, 1,
-    202, 182, 231, 240, 249, 63, 1, 223, 32, 249, 63, 1, 238, 32, 249, 63, 1,
-    165, 249, 63, 1, 202, 182, 165, 249, 63, 1, 174, 249, 63, 1, 202, 182,
-    174, 249, 63, 1, 202, 0, 190, 190, 249, 63, 1, 213, 16, 190, 190, 249,
-    63, 1, 188, 249, 63, 1, 202, 182, 188, 249, 63, 1, 217, 85, 188, 249, 63,
-    1, 170, 249, 63, 1, 202, 182, 170, 249, 63, 1, 214, 68, 249, 63, 1, 173,
-    249, 63, 1, 202, 182, 173, 249, 63, 1, 212, 101, 249, 63, 1, 247, 160,
-    249, 63, 1, 214, 162, 249, 63, 1, 217, 11, 249, 63, 1, 68, 249, 63, 1,
-    66, 249, 63, 3, 198, 82, 249, 63, 18, 3, 71, 249, 63, 18, 3, 210, 193,
-    71, 249, 63, 18, 3, 234, 188, 249, 63, 18, 3, 68, 249, 63, 18, 3, 222,
-    61, 68, 249, 63, 18, 3, 74, 249, 63, 18, 3, 222, 61, 74, 249, 63, 18, 3,
-    66, 249, 63, 18, 3, 126, 40, 202, 182, 188, 249, 63, 120, 3, 214, 70,
-    249, 63, 120, 3, 230, 116, 249, 63, 210, 154, 249, 63, 210, 150, 249, 63,
-    16, 248, 165, 215, 7, 216, 163, 249, 63, 16, 248, 165, 209, 138, 249, 63,
-    16, 248, 165, 222, 179, 249, 63, 16, 248, 165, 210, 154, 219, 183, 1,
-    155, 219, 183, 1, 221, 94, 219, 183, 1, 221, 215, 219, 183, 1, 231, 240,
-    219, 183, 1, 231, 19, 219, 183, 1, 214, 68, 219, 183, 1, 247, 160, 219,
-    183, 1, 247, 1, 219, 183, 1, 223, 32, 219, 183, 1, 212, 101, 219, 183, 1,
-    190, 190, 219, 183, 1, 199, 49, 219, 183, 1, 238, 32, 219, 183, 1, 180,
-    219, 183, 1, 168, 219, 183, 1, 209, 110, 219, 183, 1, 209, 228, 219, 183,
-    1, 233, 109, 219, 183, 1, 232, 219, 219, 183, 1, 249, 153, 219, 183, 1,
-    248, 140, 219, 183, 1, 174, 219, 183, 1, 216, 19, 219, 183, 1, 197, 168,
-    219, 183, 1, 197, 157, 219, 183, 1, 235, 35, 219, 183, 1, 170, 219, 183,
-    1, 165, 219, 183, 1, 173, 219, 183, 1, 140, 219, 183, 1, 229, 111, 219,
-    183, 1, 195, 188, 219, 183, 1, 188, 219, 183, 1, 203, 165, 219, 183, 1,
-    193, 190, 219, 183, 1, 65, 219, 183, 200, 239, 1, 170, 219, 183, 200,
-    239, 1, 165, 219, 183, 18, 3, 252, 206, 219, 183, 18, 3, 68, 219, 183,
-    18, 3, 74, 219, 183, 18, 3, 211, 87, 219, 183, 18, 3, 66, 219, 183, 18,
-    3, 196, 30, 219, 183, 18, 3, 71, 219, 183, 120, 3, 222, 152, 219, 183,
-    120, 3, 218, 168, 219, 183, 120, 3, 172, 219, 183, 120, 3, 215, 61, 219,
-    183, 120, 3, 210, 236, 219, 183, 120, 3, 146, 219, 183, 120, 3, 200, 43,
-    219, 183, 120, 3, 212, 73, 219, 183, 120, 3, 222, 83, 219, 183, 3, 207,
-    139, 219, 183, 3, 212, 141, 219, 183, 208, 152, 199, 247, 219, 183, 208,
-    152, 212, 85, 198, 196, 199, 247, 219, 183, 208, 152, 247, 10, 219, 183,
-    208, 152, 197, 149, 247, 10, 219, 183, 208, 152, 197, 148, 219, 183, 17,
-    191, 77, 219, 183, 17, 107, 219, 183, 17, 109, 219, 183, 17, 138, 219,
-    183, 17, 134, 219, 183, 17, 149, 219, 183, 17, 169, 219, 183, 17, 175,
-    219, 183, 17, 171, 219, 183, 17, 178, 219, 183, 1, 197, 132, 219, 183, 1,
-    197, 120, 219, 183, 1, 237, 191, 211, 121, 243, 88, 17, 191, 77, 211,
-    121, 243, 88, 17, 107, 211, 121, 243, 88, 17, 109, 211, 121, 243, 88, 17,
-    138, 211, 121, 243, 88, 17, 134, 211, 121, 243, 88, 17, 149, 211, 121,
-    243, 88, 17, 169, 211, 121, 243, 88, 17, 175, 211, 121, 243, 88, 17, 171,
-    211, 121, 243, 88, 17, 178, 211, 121, 243, 88, 1, 173, 211, 121, 243, 88,
-    1, 250, 182, 211, 121, 243, 88, 1, 251, 253, 211, 121, 243, 88, 1, 251,
-    122, 211, 121, 243, 88, 1, 251, 207, 211, 121, 243, 88, 1, 220, 125, 211,
-    121, 243, 88, 1, 252, 168, 211, 121, 243, 88, 1, 252, 169, 211, 121, 243,
-    88, 1, 252, 167, 211, 121, 243, 88, 1, 252, 161, 211, 121, 243, 88, 1,
-    219, 146, 211, 121, 243, 88, 1, 223, 68, 211, 121, 243, 88, 1, 223, 200,
-    211, 121, 243, 88, 1, 223, 90, 211, 121, 243, 88, 1, 223, 77, 211, 121,
-    243, 88, 1, 218, 225, 211, 121, 243, 88, 1, 196, 160, 211, 121, 243, 88,
-    1, 196, 158, 211, 121, 243, 88, 1, 196, 83, 211, 121, 243, 88, 1, 196,
-    21, 211, 121, 243, 88, 1, 219, 238, 211, 121, 243, 88, 1, 234, 56, 211,
-    121, 243, 88, 1, 234, 191, 211, 121, 243, 88, 1, 234, 103, 211, 121, 243,
-    88, 1, 234, 26, 211, 121, 243, 88, 1, 219, 43, 211, 121, 243, 88, 1, 211,
-    24, 211, 121, 243, 88, 1, 211, 178, 211, 121, 243, 88, 1, 211, 9, 211,
-    121, 243, 88, 1, 211, 136, 211, 121, 243, 88, 215, 156, 197, 97, 211,
-    121, 243, 88, 231, 235, 197, 98, 211, 121, 243, 88, 215, 150, 197, 98,
-    211, 121, 243, 88, 207, 66, 211, 121, 243, 88, 209, 226, 211, 121, 243,
-    88, 251, 244, 211, 121, 243, 88, 208, 152, 215, 146, 211, 121, 243, 88,
-    208, 152, 55, 215, 146, 38, 2, 1, 206, 113, 195, 153, 38, 2, 1, 219, 12,
-    237, 146, 38, 2, 1, 214, 215, 74, 38, 2, 1, 193, 78, 234, 22, 38, 2, 1,
-    199, 200, 199, 145, 38, 2, 1, 198, 221, 199, 145, 38, 2, 1, 199, 200,
-    230, 17, 56, 38, 2, 1, 199, 200, 192, 95, 38, 2, 1, 196, 108, 196, 128,
-    101, 215, 157, 6, 1, 251, 132, 101, 215, 157, 6, 1, 249, 101, 101, 215,
-    157, 6, 1, 231, 210, 101, 215, 157, 6, 1, 236, 150, 101, 215, 157, 6, 1,
-    234, 103, 101, 215, 157, 6, 1, 195, 49, 101, 215, 157, 6, 1, 191, 80,
-    101, 215, 157, 6, 1, 199, 193, 101, 215, 157, 6, 1, 223, 162, 101, 215,
-    157, 6, 1, 222, 87, 101, 215, 157, 6, 1, 220, 7, 101, 215, 157, 6, 1,
-    217, 90, 101, 215, 157, 6, 1, 214, 216, 101, 215, 157, 6, 1, 211, 104,
-    101, 215, 157, 6, 1, 210, 131, 101, 215, 157, 6, 1, 191, 67, 101, 215,
-    157, 6, 1, 207, 163, 101, 215, 157, 6, 1, 205, 142, 101, 215, 157, 6, 1,
-    199, 179, 101, 215, 157, 6, 1, 196, 113, 101, 215, 157, 6, 1, 209, 220,
-    101, 215, 157, 6, 1, 221, 200, 101, 215, 157, 6, 1, 231, 82, 101, 215,
-    157, 6, 1, 208, 81, 101, 215, 157, 6, 1, 203, 69, 101, 215, 157, 6, 1,
-    243, 81, 101, 215, 157, 6, 1, 247, 128, 101, 215, 157, 6, 1, 222, 234,
-    101, 215, 157, 6, 1, 243, 18, 101, 215, 157, 6, 1, 246, 241, 101, 215,
-    157, 6, 1, 192, 218, 101, 215, 157, 6, 1, 222, 249, 101, 215, 157, 6, 1,
-    230, 87, 101, 215, 157, 6, 1, 229, 245, 101, 215, 157, 6, 1, 229, 145,
-    101, 215, 157, 6, 1, 193, 125, 101, 215, 157, 6, 1, 230, 19, 101, 215,
-    157, 6, 1, 229, 11, 101, 215, 157, 6, 1, 233, 23, 101, 215, 157, 6, 1,
-    192, 14, 101, 215, 157, 6, 1, 234, 123, 101, 215, 157, 6, 1, 153, 231,
-    210, 101, 215, 157, 6, 1, 251, 230, 101, 215, 157, 6, 1, 252, 14, 101,
-    215, 157, 6, 1, 230, 17, 56, 101, 215, 157, 6, 1, 220, 116, 56, 200, 197,
-    208, 152, 248, 165, 200, 166, 200, 197, 208, 152, 248, 165, 210, 155,
-    200, 197, 208, 152, 248, 165, 208, 139, 200, 197, 208, 152, 248, 165,
-    247, 145, 200, 197, 208, 152, 248, 165, 219, 173, 205, 121, 200, 197,
-    208, 152, 248, 165, 222, 142, 205, 121, 200, 197, 208, 152, 248, 165,
-    238, 33, 205, 121, 200, 197, 208, 152, 248, 165, 249, 154, 205, 121, 195,
-    150, 163, 222, 57, 195, 150, 163, 203, 130, 195, 150, 163, 208, 225, 195,
-    150, 3, 213, 187, 195, 150, 3, 192, 117, 216, 82, 200, 156, 195, 150,
-    163, 192, 117, 251, 249, 223, 149, 200, 156, 195, 150, 163, 192, 117,
-    223, 149, 200, 156, 195, 150, 163, 192, 117, 222, 45, 223, 149, 200, 156,
-    195, 150, 163, 247, 122, 60, 195, 150, 163, 192, 117, 222, 45, 223, 149,
-    200, 157, 205, 88, 195, 150, 163, 55, 200, 156, 195, 150, 163, 197, 225,
-    200, 156, 195, 150, 163, 222, 45, 251, 73, 195, 150, 163, 75, 60, 195,
-    150, 163, 105, 185, 60, 195, 150, 163, 115, 185, 60, 195, 150, 163, 206,
-    196, 222, 56, 223, 149, 200, 156, 195, 150, 163, 250, 179, 223, 149, 200,
-    156, 195, 150, 3, 195, 36, 200, 156, 195, 150, 3, 195, 36, 196, 154, 195,
-    150, 3, 207, 18, 195, 36, 196, 154, 195, 150, 3, 195, 36, 251, 73, 195,
-    150, 3, 207, 18, 195, 36, 251, 73, 195, 150, 3, 195, 36, 196, 155, 4,
-    199, 215, 195, 150, 3, 195, 36, 251, 74, 4, 199, 215, 195, 150, 3, 251,
-    72, 251, 88, 195, 150, 3, 251, 72, 249, 120, 195, 150, 3, 251, 72, 195,
-    178, 195, 150, 3, 251, 72, 195, 179, 4, 199, 215, 195, 150, 3, 198, 126,
-    195, 150, 3, 229, 180, 179, 251, 71, 195, 150, 3, 179, 251, 71, 195, 150,
-    3, 206, 70, 179, 251, 71, 195, 150, 3, 251, 72, 196, 162, 215, 136, 195,
-    150, 3, 251, 10, 195, 150, 3, 206, 122, 251, 10, 195, 150, 163, 247, 122,
-    58, 195, 150, 3, 222, 237, 195, 150, 3, 196, 75, 195, 150, 3, 250, 177,
-    195, 150, 163, 206, 189, 58, 195, 150, 163, 55, 206, 189, 58, 195, 150,
-    3, 55, 251, 72, 251, 88, 8, 1, 2, 6, 65, 8, 1, 2, 6, 252, 25, 8, 2, 1,
-    153, 252, 25, 8, 1, 2, 6, 249, 82, 250, 120, 8, 1, 2, 6, 247, 193, 8, 1,
-    2, 6, 238, 127, 8, 1, 2, 6, 233, 248, 8, 1, 2, 6, 71, 8, 2, 1, 153, 211,
-    77, 71, 8, 2, 1, 153, 68, 8, 1, 2, 6, 223, 35, 8, 1, 2, 6, 222, 152, 8,
-    1, 2, 6, 220, 143, 4, 106, 8, 1, 2, 6, 218, 168, 8, 1, 2, 6, 207, 18,
-    215, 61, 8, 1, 2, 6, 74, 8, 1, 2, 6, 211, 77, 74, 8, 2, 1, 202, 206, 74,
-    8, 2, 1, 202, 206, 211, 77, 74, 8, 2, 1, 202, 206, 187, 4, 106, 8, 2, 1,
-    153, 211, 151, 8, 1, 2, 6, 211, 19, 8, 2, 1, 198, 54, 132, 74, 8, 2, 1,
-    248, 77, 132, 74, 8, 1, 2, 6, 210, 236, 8, 1, 2, 6, 207, 18, 146, 8, 1,
-    2, 6, 153, 146, 8, 1, 2, 6, 200, 43, 8, 1, 2, 6, 66, 8, 2, 1, 202, 206,
-    66, 8, 2, 1, 202, 206, 237, 40, 66, 8, 2, 1, 202, 206, 153, 218, 168, 8,
-    1, 2, 6, 196, 12, 8, 1, 2, 6, 193, 224, 8, 1, 2, 6, 191, 166, 8, 1, 2, 6,
-    233, 178, 8, 1, 195, 20, 220, 8, 201, 216, 8, 1, 251, 230, 35, 1, 2, 6,
-    231, 211, 35, 1, 2, 6, 220, 31, 35, 1, 2, 6, 209, 185, 35, 1, 2, 6, 207,
-    3, 35, 1, 2, 6, 208, 176, 38, 1, 2, 6, 234, 140, 52, 1, 6, 65, 52, 1, 6,
-    252, 25, 52, 1, 6, 250, 120, 52, 1, 6, 249, 82, 250, 120, 52, 1, 6, 238,
-    127, 52, 1, 6, 71, 52, 1, 6, 207, 18, 71, 52, 1, 6, 232, 51, 52, 1, 6,
-    230, 116, 52, 1, 6, 68, 52, 1, 6, 223, 35, 52, 1, 6, 222, 152, 52, 1, 6,
-    172, 52, 1, 6, 218, 168, 52, 1, 6, 215, 61, 52, 1, 6, 207, 18, 215, 61,
-    52, 1, 6, 74, 52, 1, 6, 211, 19, 52, 1, 6, 210, 236, 52, 1, 6, 146, 52,
-    1, 6, 200, 43, 52, 1, 6, 66, 52, 1, 6, 193, 224, 52, 1, 2, 65, 52, 1, 2,
-    153, 65, 52, 1, 2, 251, 160, 52, 1, 2, 153, 252, 25, 52, 1, 2, 250, 120,
-    52, 1, 2, 238, 127, 52, 1, 2, 71, 52, 1, 2, 205, 86, 52, 1, 2, 211, 77,
-    71, 52, 1, 2, 153, 211, 77, 71, 52, 1, 2, 232, 51, 52, 1, 2, 153, 68, 52,
-    1, 2, 222, 152, 52, 1, 2, 218, 168, 52, 1, 2, 234, 88, 52, 1, 2, 74, 52,
-    1, 2, 211, 77, 74, 52, 1, 2, 198, 54, 132, 74, 52, 1, 2, 248, 77, 132,
-    74, 52, 1, 2, 210, 236, 52, 1, 2, 200, 43, 52, 1, 2, 66, 52, 1, 2, 202,
-    206, 66, 52, 1, 2, 153, 218, 168, 52, 1, 2, 196, 12, 52, 1, 2, 251, 230,
-    52, 1, 2, 248, 212, 52, 1, 2, 35, 231, 211, 52, 1, 2, 237, 106, 52, 1, 2,
-    35, 209, 211, 52, 1, 2, 243, 95, 8, 200, 230, 2, 1, 68, 8, 200, 230, 2,
-    1, 146, 8, 200, 230, 2, 1, 66, 8, 200, 230, 2, 1, 196, 12, 35, 200, 230,
-    2, 1, 248, 212, 35, 200, 230, 2, 1, 231, 211, 35, 200, 230, 2, 1, 207, 3,
-    35, 200, 230, 2, 1, 209, 211, 35, 200, 230, 2, 1, 243, 95, 8, 2, 1, 196,
-    152, 8, 2, 1, 78, 4, 82, 198, 152, 8, 2, 1, 238, 128, 4, 82, 198, 152, 8,
-    2, 1, 233, 176, 4, 82, 198, 152, 8, 2, 1, 218, 169, 4, 82, 198, 152, 8,
-    2, 1, 215, 62, 4, 82, 198, 152, 8, 2, 1, 210, 237, 4, 82, 198, 152, 8, 2,
-    1, 207, 222, 4, 82, 198, 152, 8, 2, 1, 207, 222, 4, 232, 234, 23, 82,
-    198, 152, 8, 2, 1, 206, 9, 4, 82, 198, 152, 8, 2, 1, 200, 44, 4, 82, 198,
-    152, 8, 2, 1, 191, 167, 4, 82, 198, 152, 8, 2, 1, 153, 232, 51, 52, 1,
-    38, 234, 103, 8, 2, 1, 223, 115, 232, 51, 8, 2, 1, 199, 52, 4, 201, 32,
-    8, 2, 6, 1, 228, 74, 4, 106, 8, 2, 1, 223, 84, 4, 106, 8, 2, 1, 210, 237,
-    4, 106, 8, 2, 6, 1, 126, 4, 106, 8, 2, 1, 196, 71, 4, 106, 8, 2, 1, 78,
-    4, 210, 192, 102, 8, 2, 1, 238, 128, 4, 210, 192, 102, 8, 2, 1, 233, 176,
-    4, 210, 192, 102, 8, 2, 1, 232, 52, 4, 210, 192, 102, 8, 2, 1, 222, 153,
-    4, 210, 192, 102, 8, 2, 1, 220, 143, 4, 210, 192, 102, 8, 2, 1, 218, 169,
-    4, 210, 192, 102, 8, 2, 1, 215, 62, 4, 210, 192, 102, 8, 2, 1, 210, 237,
-    4, 210, 192, 102, 8, 2, 1, 207, 222, 4, 210, 192, 102, 8, 2, 1, 206, 9,
-    4, 210, 192, 102, 8, 2, 1, 234, 13, 4, 210, 192, 102, 8, 2, 1, 196, 13,
-    4, 210, 192, 102, 8, 2, 1, 192, 236, 4, 210, 192, 102, 8, 2, 1, 191, 167,
-    4, 210, 192, 102, 8, 2, 1, 42, 4, 207, 24, 102, 8, 2, 1, 251, 161, 4,
-    207, 24, 102, 8, 2, 1, 238, 128, 4, 228, 251, 23, 199, 215, 8, 2, 1, 235,
-    15, 4, 207, 24, 102, 8, 2, 1, 211, 77, 235, 15, 4, 207, 24, 102, 8, 2, 1,
-    207, 18, 211, 77, 235, 15, 4, 207, 24, 102, 8, 2, 1, 205, 87, 4, 207, 24,
-    102, 8, 2, 1, 228, 74, 4, 207, 24, 102, 8, 2, 1, 211, 77, 187, 4, 207,
-    24, 102, 8, 2, 1, 234, 13, 4, 207, 24, 102, 8, 2, 1, 126, 4, 207, 24,
-    102, 8, 2, 1, 233, 179, 4, 207, 24, 102, 52, 1, 2, 153, 251, 160, 52, 1,
-    2, 247, 193, 52, 1, 2, 247, 194, 4, 238, 175, 52, 1, 2, 233, 248, 52, 1,
-    2, 207, 18, 211, 77, 71, 52, 1, 2, 233, 175, 52, 1, 2, 236, 139, 223, 36,
-    4, 106, 52, 1, 2, 27, 232, 51, 52, 1, 2, 153, 230, 116, 52, 1, 2, 228,
-    74, 4, 106, 52, 1, 2, 223, 83, 52, 1, 2, 6, 68, 52, 1, 2, 6, 228, 74, 4,
-    106, 52, 1, 2, 223, 36, 4, 238, 212, 52, 1, 2, 220, 143, 4, 207, 24, 102,
-    52, 1, 2, 220, 143, 4, 210, 192, 102, 52, 1, 2, 6, 172, 52, 1, 2, 218,
-    169, 4, 102, 52, 1, 2, 153, 218, 169, 4, 179, 219, 212, 52, 1, 2, 215,
-    62, 4, 45, 102, 52, 1, 2, 215, 62, 4, 207, 24, 102, 52, 1, 2, 6, 215, 61,
-    52, 1, 2, 249, 82, 74, 52, 1, 2, 209, 211, 52, 1, 2, 206, 9, 4, 102, 52,
-    1, 2, 234, 12, 52, 1, 2, 200, 44, 4, 210, 192, 102, 52, 1, 2, 126, 164,
-    52, 1, 2, 196, 70, 52, 1, 2, 6, 66, 52, 1, 2, 196, 13, 4, 102, 52, 1, 2,
-    153, 196, 12, 52, 1, 2, 191, 166, 52, 1, 2, 191, 167, 4, 207, 24, 102,
-    52, 1, 2, 191, 167, 4, 238, 175, 52, 1, 2, 233, 178, 52, 1, 2, 199, 15,
-    33, 235, 138, 230, 211, 252, 60, 33, 235, 138, 252, 47, 252, 60, 33, 202,
-    59, 60, 33, 200, 164, 77, 33, 217, 145, 33, 230, 208, 33, 217, 143, 33,
-    252, 44, 33, 230, 209, 33, 252, 45, 33, 8, 2, 1, 207, 222, 60, 33, 248,
-    35, 33, 217, 144, 33, 55, 243, 2, 58, 33, 211, 139, 58, 33, 191, 21, 60,
-    33, 223, 69, 60, 33, 196, 63, 58, 33, 196, 46, 58, 33, 8, 2, 1, 232, 203,
-    211, 77, 42, 58, 33, 8, 2, 1, 252, 25, 33, 8, 2, 1, 251, 68, 33, 8, 2, 1,
-    250, 146, 33, 8, 2, 1, 247, 194, 247, 35, 33, 8, 2, 1, 223, 115, 238,
-    127, 33, 8, 2, 1, 233, 248, 33, 8, 2, 1, 232, 51, 33, 8, 1, 2, 6, 232,
-    51, 33, 8, 2, 1, 222, 152, 33, 8, 2, 1, 172, 33, 8, 1, 2, 6, 172, 33, 8,
-    1, 2, 6, 218, 168, 33, 8, 2, 1, 215, 61, 33, 8, 1, 2, 6, 215, 61, 33, 8,
-    1, 2, 6, 146, 33, 8, 2, 1, 207, 222, 206, 116, 33, 8, 2, 1, 206, 8, 33,
-    8, 2, 1, 179, 206, 8, 33, 8, 2, 1, 191, 166, 33, 8, 2, 1, 251, 160, 33,
-    8, 2, 1, 250, 120, 33, 8, 2, 1, 248, 212, 33, 8, 2, 1, 205, 86, 33, 8, 2,
-    1, 233, 175, 33, 8, 2, 1, 220, 143, 4, 55, 82, 198, 152, 33, 8, 2, 1,
-    187, 4, 156, 247, 23, 106, 33, 8, 2, 1, 210, 236, 33, 8, 2, 1, 234, 12,
-    33, 8, 2, 1, 126, 4, 156, 247, 23, 106, 33, 8, 2, 1, 193, 224, 33, 8, 2,
-    1, 42, 4, 237, 42, 33, 8, 2, 1, 187, 4, 237, 42, 33, 8, 2, 1, 126, 4,
-    237, 42, 33, 133, 199, 229, 58, 33, 222, 36, 93, 183, 33, 222, 36, 93,
-    219, 224, 33, 75, 93, 219, 224, 33, 193, 78, 223, 93, 248, 29, 60, 33,
-    75, 248, 233, 219, 224, 33, 237, 115, 77, 33, 55, 223, 93, 248, 37, 60,
-    33, 251, 165, 234, 45, 119, 60, 33, 45, 250, 236, 58, 33, 50, 250, 236,
-    23, 144, 250, 236, 60, 8, 6, 1, 42, 4, 206, 189, 60, 8, 2, 1, 42, 4, 206,
-    189, 60, 8, 6, 1, 78, 4, 75, 58, 8, 2, 1, 78, 4, 75, 58, 8, 6, 1, 78, 4,
-    75, 60, 8, 2, 1, 78, 4, 75, 60, 8, 6, 1, 78, 4, 219, 113, 60, 8, 2, 1,
-    78, 4, 219, 113, 60, 8, 6, 1, 247, 194, 4, 247, 36, 23, 252, 46, 8, 2, 1,
-    247, 194, 4, 247, 36, 23, 252, 46, 8, 6, 1, 238, 128, 4, 75, 58, 8, 2, 1,
-    238, 128, 4, 75, 58, 8, 6, 1, 238, 128, 4, 75, 60, 8, 2, 1, 238, 128, 4,
-    75, 60, 8, 6, 1, 238, 128, 4, 219, 113, 60, 8, 2, 1, 238, 128, 4, 219,
-    113, 60, 8, 6, 1, 238, 128, 4, 247, 35, 8, 2, 1, 238, 128, 4, 247, 35, 8,
-    6, 1, 238, 128, 4, 243, 2, 60, 8, 2, 1, 238, 128, 4, 243, 2, 60, 8, 6, 1,
-    235, 15, 4, 217, 147, 23, 230, 210, 8, 2, 1, 235, 15, 4, 217, 147, 23,
-    230, 210, 8, 6, 1, 235, 15, 4, 217, 147, 23, 252, 46, 8, 2, 1, 235, 15,
-    4, 217, 147, 23, 252, 46, 8, 6, 1, 235, 15, 4, 243, 2, 60, 8, 2, 1, 235,
-    15, 4, 243, 2, 60, 8, 6, 1, 235, 15, 4, 198, 153, 60, 8, 2, 1, 235, 15,
-    4, 198, 153, 60, 8, 6, 1, 235, 15, 4, 247, 36, 23, 248, 36, 8, 2, 1, 235,
-    15, 4, 247, 36, 23, 248, 36, 8, 6, 1, 233, 176, 4, 75, 58, 8, 2, 1, 233,
-    176, 4, 75, 58, 8, 6, 1, 232, 52, 4, 217, 146, 8, 2, 1, 232, 52, 4, 217,
-    146, 8, 6, 1, 230, 117, 4, 75, 58, 8, 2, 1, 230, 117, 4, 75, 58, 8, 6, 1,
-    230, 117, 4, 75, 60, 8, 2, 1, 230, 117, 4, 75, 60, 8, 6, 1, 230, 117, 4,
-    237, 42, 8, 2, 1, 230, 117, 4, 237, 42, 8, 6, 1, 230, 117, 4, 247, 35, 8,
-    2, 1, 230, 117, 4, 247, 35, 8, 6, 1, 230, 117, 4, 248, 37, 60, 8, 2, 1,
-    230, 117, 4, 248, 37, 60, 8, 6, 1, 228, 74, 4, 198, 153, 60, 8, 2, 1,
-    228, 74, 4, 198, 153, 60, 8, 6, 1, 228, 74, 4, 237, 43, 23, 252, 46, 8,
-    2, 1, 228, 74, 4, 237, 43, 23, 252, 46, 8, 6, 1, 222, 153, 4, 252, 46, 8,
-    2, 1, 222, 153, 4, 252, 46, 8, 6, 1, 222, 153, 4, 75, 60, 8, 2, 1, 222,
-    153, 4, 75, 60, 8, 6, 1, 222, 153, 4, 219, 113, 60, 8, 2, 1, 222, 153, 4,
-    219, 113, 60, 8, 6, 1, 220, 143, 4, 75, 60, 8, 2, 1, 220, 143, 4, 75, 60,
-    8, 6, 1, 220, 143, 4, 75, 248, 233, 23, 217, 146, 8, 2, 1, 220, 143, 4,
-    75, 248, 233, 23, 217, 146, 8, 6, 1, 220, 143, 4, 219, 113, 60, 8, 2, 1,
-    220, 143, 4, 219, 113, 60, 8, 6, 1, 220, 143, 4, 243, 2, 60, 8, 2, 1,
-    220, 143, 4, 243, 2, 60, 8, 6, 1, 218, 169, 4, 252, 46, 8, 2, 1, 218,
-    169, 4, 252, 46, 8, 6, 1, 218, 169, 4, 75, 58, 8, 2, 1, 218, 169, 4, 75,
-    58, 8, 6, 1, 218, 169, 4, 75, 60, 8, 2, 1, 218, 169, 4, 75, 60, 8, 6, 1,
-    215, 62, 4, 75, 58, 8, 2, 1, 215, 62, 4, 75, 58, 8, 6, 1, 215, 62, 4, 75,
-    60, 8, 2, 1, 215, 62, 4, 75, 60, 8, 6, 1, 215, 62, 4, 219, 113, 60, 8, 2,
-    1, 215, 62, 4, 219, 113, 60, 8, 6, 1, 215, 62, 4, 243, 2, 60, 8, 2, 1,
-    215, 62, 4, 243, 2, 60, 8, 6, 1, 187, 4, 198, 153, 23, 252, 46, 8, 2, 1,
-    187, 4, 198, 153, 23, 252, 46, 8, 6, 1, 187, 4, 198, 153, 23, 237, 42, 8,
-    2, 1, 187, 4, 198, 153, 23, 237, 42, 8, 6, 1, 187, 4, 217, 147, 23, 230,
-    210, 8, 2, 1, 187, 4, 217, 147, 23, 230, 210, 8, 6, 1, 187, 4, 217, 147,
-    23, 252, 46, 8, 2, 1, 187, 4, 217, 147, 23, 252, 46, 8, 6, 1, 210, 237,
-    4, 252, 46, 8, 2, 1, 210, 237, 4, 252, 46, 8, 6, 1, 210, 237, 4, 75, 58,
-    8, 2, 1, 210, 237, 4, 75, 58, 8, 6, 1, 207, 222, 4, 75, 58, 8, 2, 1, 207,
-    222, 4, 75, 58, 8, 6, 1, 207, 222, 4, 75, 60, 8, 2, 1, 207, 222, 4, 75,
-    60, 8, 6, 1, 207, 222, 4, 75, 248, 233, 23, 217, 146, 8, 2, 1, 207, 222,
-    4, 75, 248, 233, 23, 217, 146, 8, 6, 1, 207, 222, 4, 219, 113, 60, 8, 2,
-    1, 207, 222, 4, 219, 113, 60, 8, 6, 1, 206, 9, 4, 75, 58, 8, 2, 1, 206,
-    9, 4, 75, 58, 8, 6, 1, 206, 9, 4, 75, 60, 8, 2, 1, 206, 9, 4, 75, 60, 8,
-    6, 1, 206, 9, 4, 252, 47, 23, 75, 58, 8, 2, 1, 206, 9, 4, 252, 47, 23,
-    75, 58, 8, 6, 1, 206, 9, 4, 247, 93, 23, 75, 58, 8, 2, 1, 206, 9, 4, 247,
-    93, 23, 75, 58, 8, 6, 1, 206, 9, 4, 75, 248, 233, 23, 75, 58, 8, 2, 1,
-    206, 9, 4, 75, 248, 233, 23, 75, 58, 8, 6, 1, 200, 44, 4, 75, 58, 8, 2,
-    1, 200, 44, 4, 75, 58, 8, 6, 1, 200, 44, 4, 75, 60, 8, 2, 1, 200, 44, 4,
-    75, 60, 8, 6, 1, 200, 44, 4, 219, 113, 60, 8, 2, 1, 200, 44, 4, 219, 113,
-    60, 8, 6, 1, 200, 44, 4, 243, 2, 60, 8, 2, 1, 200, 44, 4, 243, 2, 60, 8,
-    6, 1, 126, 4, 237, 43, 60, 8, 2, 1, 126, 4, 237, 43, 60, 8, 6, 1, 126, 4,
-    198, 153, 60, 8, 2, 1, 126, 4, 198, 153, 60, 8, 6, 1, 126, 4, 243, 2, 60,
-    8, 2, 1, 126, 4, 243, 2, 60, 8, 6, 1, 126, 4, 198, 153, 23, 252, 46, 8,
-    2, 1, 126, 4, 198, 153, 23, 252, 46, 8, 6, 1, 126, 4, 217, 147, 23, 237,
-    42, 8, 2, 1, 126, 4, 217, 147, 23, 237, 42, 8, 6, 1, 196, 13, 4, 198,
-    152, 8, 2, 1, 196, 13, 4, 198, 152, 8, 6, 1, 196, 13, 4, 75, 60, 8, 2, 1,
-    196, 13, 4, 75, 60, 8, 6, 1, 193, 225, 4, 230, 210, 8, 2, 1, 193, 225, 4,
-    230, 210, 8, 6, 1, 193, 225, 4, 252, 46, 8, 2, 1, 193, 225, 4, 252, 46,
-    8, 6, 1, 193, 225, 4, 237, 42, 8, 2, 1, 193, 225, 4, 237, 42, 8, 6, 1,
-    193, 225, 4, 75, 58, 8, 2, 1, 193, 225, 4, 75, 58, 8, 6, 1, 193, 225, 4,
-    75, 60, 8, 2, 1, 193, 225, 4, 75, 60, 8, 6, 1, 192, 236, 4, 75, 58, 8, 2,
-    1, 192, 236, 4, 75, 58, 8, 6, 1, 192, 236, 4, 237, 42, 8, 2, 1, 192, 236,
-    4, 237, 42, 8, 6, 1, 192, 160, 4, 75, 58, 8, 2, 1, 192, 160, 4, 75, 58,
-    8, 6, 1, 191, 167, 4, 243, 1, 8, 2, 1, 191, 167, 4, 243, 1, 8, 6, 1, 191,
-    167, 4, 75, 60, 8, 2, 1, 191, 167, 4, 75, 60, 8, 6, 1, 191, 167, 4, 219,
-    113, 60, 8, 2, 1, 191, 167, 4, 219, 113, 60, 8, 2, 1, 230, 117, 4, 219,
-    113, 60, 8, 2, 1, 200, 44, 4, 237, 42, 8, 2, 1, 193, 225, 4, 206, 189,
-    58, 8, 2, 1, 192, 160, 4, 206, 189, 58, 8, 2, 1, 42, 4, 50, 132, 206,
-    188, 8, 2, 1, 179, 206, 9, 4, 75, 58, 8, 2, 1, 179, 206, 9, 4, 237, 39,
-    106, 8, 2, 1, 179, 206, 9, 4, 137, 106, 8, 6, 1, 203, 127, 206, 8, 8, 2,
-    1, 237, 106, 8, 6, 1, 42, 4, 75, 60, 8, 2, 1, 42, 4, 75, 60, 8, 6, 1, 42,
-    4, 228, 251, 58, 8, 2, 1, 42, 4, 228, 251, 58, 8, 6, 1, 42, 4, 243, 2,
-    23, 252, 46, 8, 2, 1, 42, 4, 243, 2, 23, 252, 46, 8, 6, 1, 42, 4, 243, 2,
-    23, 230, 210, 8, 2, 1, 42, 4, 243, 2, 23, 230, 210, 8, 6, 1, 42, 4, 243,
-    2, 23, 228, 251, 58, 8, 2, 1, 42, 4, 243, 2, 23, 228, 251, 58, 8, 6, 1,
-    42, 4, 243, 2, 23, 198, 152, 8, 2, 1, 42, 4, 243, 2, 23, 198, 152, 8, 6,
-    1, 42, 4, 243, 2, 23, 75, 60, 8, 2, 1, 42, 4, 243, 2, 23, 75, 60, 8, 6,
-    1, 42, 4, 248, 37, 23, 252, 46, 8, 2, 1, 42, 4, 248, 37, 23, 252, 46, 8,
-    6, 1, 42, 4, 248, 37, 23, 230, 210, 8, 2, 1, 42, 4, 248, 37, 23, 230,
-    210, 8, 6, 1, 42, 4, 248, 37, 23, 228, 251, 58, 8, 2, 1, 42, 4, 248, 37,
-    23, 228, 251, 58, 8, 6, 1, 42, 4, 248, 37, 23, 198, 152, 8, 2, 1, 42, 4,
-    248, 37, 23, 198, 152, 8, 6, 1, 42, 4, 248, 37, 23, 75, 60, 8, 2, 1, 42,
-    4, 248, 37, 23, 75, 60, 8, 6, 1, 235, 15, 4, 75, 60, 8, 2, 1, 235, 15, 4,
-    75, 60, 8, 6, 1, 235, 15, 4, 228, 251, 58, 8, 2, 1, 235, 15, 4, 228, 251,
-    58, 8, 6, 1, 235, 15, 4, 198, 152, 8, 2, 1, 235, 15, 4, 198, 152, 8, 6,
-    1, 235, 15, 4, 243, 2, 23, 252, 46, 8, 2, 1, 235, 15, 4, 243, 2, 23, 252,
-    46, 8, 6, 1, 235, 15, 4, 243, 2, 23, 230, 210, 8, 2, 1, 235, 15, 4, 243,
-    2, 23, 230, 210, 8, 6, 1, 235, 15, 4, 243, 2, 23, 228, 251, 58, 8, 2, 1,
-    235, 15, 4, 243, 2, 23, 228, 251, 58, 8, 6, 1, 235, 15, 4, 243, 2, 23,
-    198, 152, 8, 2, 1, 235, 15, 4, 243, 2, 23, 198, 152, 8, 6, 1, 235, 15, 4,
-    243, 2, 23, 75, 60, 8, 2, 1, 235, 15, 4, 243, 2, 23, 75, 60, 8, 6, 1,
-    228, 74, 4, 228, 251, 58, 8, 2, 1, 228, 74, 4, 228, 251, 58, 8, 6, 1,
-    228, 74, 4, 75, 60, 8, 2, 1, 228, 74, 4, 75, 60, 8, 6, 1, 187, 4, 75, 60,
-    8, 2, 1, 187, 4, 75, 60, 8, 6, 1, 187, 4, 228, 251, 58, 8, 2, 1, 187, 4,
-    228, 251, 58, 8, 6, 1, 187, 4, 243, 2, 23, 252, 46, 8, 2, 1, 187, 4, 243,
-    2, 23, 252, 46, 8, 6, 1, 187, 4, 243, 2, 23, 230, 210, 8, 2, 1, 187, 4,
-    243, 2, 23, 230, 210, 8, 6, 1, 187, 4, 243, 2, 23, 228, 251, 58, 8, 2, 1,
-    187, 4, 243, 2, 23, 228, 251, 58, 8, 6, 1, 187, 4, 243, 2, 23, 198, 152,
-    8, 2, 1, 187, 4, 243, 2, 23, 198, 152, 8, 6, 1, 187, 4, 243, 2, 23, 75,
-    60, 8, 2, 1, 187, 4, 243, 2, 23, 75, 60, 8, 6, 1, 187, 4, 228, 188, 23,
-    252, 46, 8, 2, 1, 187, 4, 228, 188, 23, 252, 46, 8, 6, 1, 187, 4, 228,
-    188, 23, 230, 210, 8, 2, 1, 187, 4, 228, 188, 23, 230, 210, 8, 6, 1, 187,
-    4, 228, 188, 23, 228, 251, 58, 8, 2, 1, 187, 4, 228, 188, 23, 228, 251,
-    58, 8, 6, 1, 187, 4, 228, 188, 23, 198, 152, 8, 2, 1, 187, 4, 228, 188,
-    23, 198, 152, 8, 6, 1, 187, 4, 228, 188, 23, 75, 60, 8, 2, 1, 187, 4,
-    228, 188, 23, 75, 60, 8, 6, 1, 126, 4, 75, 60, 8, 2, 1, 126, 4, 75, 60,
-    8, 6, 1, 126, 4, 228, 251, 58, 8, 2, 1, 126, 4, 228, 251, 58, 8, 6, 1,
-    126, 4, 228, 188, 23, 252, 46, 8, 2, 1, 126, 4, 228, 188, 23, 252, 46, 8,
-    6, 1, 126, 4, 228, 188, 23, 230, 210, 8, 2, 1, 126, 4, 228, 188, 23, 230,
-    210, 8, 6, 1, 126, 4, 228, 188, 23, 228, 251, 58, 8, 2, 1, 126, 4, 228,
-    188, 23, 228, 251, 58, 8, 6, 1, 126, 4, 228, 188, 23, 198, 152, 8, 2, 1,
-    126, 4, 228, 188, 23, 198, 152, 8, 6, 1, 126, 4, 228, 188, 23, 75, 60, 8,
-    2, 1, 126, 4, 228, 188, 23, 75, 60, 8, 6, 1, 192, 160, 4, 230, 210, 8, 2,
-    1, 192, 160, 4, 230, 210, 8, 6, 1, 192, 160, 4, 75, 60, 8, 2, 1, 192,
-    160, 4, 75, 60, 8, 6, 1, 192, 160, 4, 228, 251, 58, 8, 2, 1, 192, 160, 4,
-    228, 251, 58, 8, 6, 1, 192, 160, 4, 198, 152, 8, 2, 1, 192, 160, 4, 198,
-    152, 8, 6, 1, 216, 83, 219, 74, 8, 2, 1, 216, 83, 219, 74, 8, 6, 1, 216,
-    83, 196, 12, 8, 2, 1, 216, 83, 196, 12, 8, 6, 1, 192, 160, 4, 219, 4, 8,
-    2, 1, 192, 160, 4, 219, 4, 35, 2, 1, 251, 161, 4, 208, 169, 35, 2, 1,
-    251, 161, 4, 237, 212, 35, 2, 1, 251, 161, 4, 208, 170, 23, 195, 169, 35,
-    2, 1, 251, 161, 4, 237, 213, 23, 195, 169, 35, 2, 1, 251, 161, 4, 208,
-    170, 23, 210, 243, 35, 2, 1, 251, 161, 4, 237, 213, 23, 210, 243, 35, 2,
-    1, 251, 161, 4, 208, 170, 23, 210, 4, 35, 2, 1, 251, 161, 4, 237, 213,
-    23, 210, 4, 35, 6, 1, 251, 161, 4, 208, 169, 35, 6, 1, 251, 161, 4, 237,
-    212, 35, 6, 1, 251, 161, 4, 208, 170, 23, 195, 169, 35, 6, 1, 251, 161,
-    4, 237, 213, 23, 195, 169, 35, 6, 1, 251, 161, 4, 208, 170, 23, 210, 243,
-    35, 6, 1, 251, 161, 4, 237, 213, 23, 210, 243, 35, 6, 1, 251, 161, 4,
-    208, 170, 23, 210, 4, 35, 6, 1, 251, 161, 4, 237, 213, 23, 210, 4, 35, 2,
-    1, 234, 48, 4, 208, 169, 35, 2, 1, 234, 48, 4, 237, 212, 35, 2, 1, 234,
-    48, 4, 208, 170, 23, 195, 169, 35, 2, 1, 234, 48, 4, 237, 213, 23, 195,
-    169, 35, 2, 1, 234, 48, 4, 208, 170, 23, 210, 243, 35, 2, 1, 234, 48, 4,
-    237, 213, 23, 210, 243, 35, 6, 1, 234, 48, 4, 208, 169, 35, 6, 1, 234,
-    48, 4, 237, 212, 35, 6, 1, 234, 48, 4, 208, 170, 23, 195, 169, 35, 6, 1,
-    234, 48, 4, 237, 213, 23, 195, 169, 35, 6, 1, 234, 48, 4, 208, 170, 23,
-    210, 243, 35, 6, 1, 234, 48, 4, 237, 213, 23, 210, 243, 35, 2, 1, 233,
-    254, 4, 208, 169, 35, 2, 1, 233, 254, 4, 237, 212, 35, 2, 1, 233, 254, 4,
-    208, 170, 23, 195, 169, 35, 2, 1, 233, 254, 4, 237, 213, 23, 195, 169,
-    35, 2, 1, 233, 254, 4, 208, 170, 23, 210, 243, 35, 2, 1, 233, 254, 4,
-    237, 213, 23, 210, 243, 35, 2, 1, 233, 254, 4, 208, 170, 23, 210, 4, 35,
-    2, 1, 233, 254, 4, 237, 213, 23, 210, 4, 35, 6, 1, 233, 254, 4, 208, 169,
-    35, 6, 1, 233, 254, 4, 237, 212, 35, 6, 1, 233, 254, 4, 208, 170, 23,
-    195, 169, 35, 6, 1, 233, 254, 4, 237, 213, 23, 195, 169, 35, 6, 1, 233,
-    254, 4, 208, 170, 23, 210, 243, 35, 6, 1, 233, 254, 4, 237, 213, 23, 210,
-    243, 35, 6, 1, 233, 254, 4, 208, 170, 23, 210, 4, 35, 6, 1, 233, 254, 4,
-    237, 213, 23, 210, 4, 35, 2, 1, 223, 84, 4, 208, 169, 35, 2, 1, 223, 84,
-    4, 237, 212, 35, 2, 1, 223, 84, 4, 208, 170, 23, 195, 169, 35, 2, 1, 223,
-    84, 4, 237, 213, 23, 195, 169, 35, 2, 1, 223, 84, 4, 208, 170, 23, 210,
-    243, 35, 2, 1, 223, 84, 4, 237, 213, 23, 210, 243, 35, 2, 1, 223, 84, 4,
-    208, 170, 23, 210, 4, 35, 2, 1, 223, 84, 4, 237, 213, 23, 210, 4, 35, 6,
-    1, 223, 84, 4, 208, 169, 35, 6, 1, 223, 84, 4, 237, 212, 35, 6, 1, 223,
-    84, 4, 208, 170, 23, 195, 169, 35, 6, 1, 223, 84, 4, 237, 213, 23, 195,
-    169, 35, 6, 1, 223, 84, 4, 208, 170, 23, 210, 243, 35, 6, 1, 223, 84, 4,
-    237, 213, 23, 210, 243, 35, 6, 1, 223, 84, 4, 208, 170, 23, 210, 4, 35,
-    6, 1, 223, 84, 4, 237, 213, 23, 210, 4, 35, 2, 1, 211, 108, 4, 208, 169,
-    35, 2, 1, 211, 108, 4, 237, 212, 35, 2, 1, 211, 108, 4, 208, 170, 23,
-    195, 169, 35, 2, 1, 211, 108, 4, 237, 213, 23, 195, 169, 35, 2, 1, 211,
-    108, 4, 208, 170, 23, 210, 243, 35, 2, 1, 211, 108, 4, 237, 213, 23, 210,
-    243, 35, 6, 1, 211, 108, 4, 208, 169, 35, 6, 1, 211, 108, 4, 237, 212,
-    35, 6, 1, 211, 108, 4, 208, 170, 23, 195, 169, 35, 6, 1, 211, 108, 4,
-    237, 213, 23, 195, 169, 35, 6, 1, 211, 108, 4, 208, 170, 23, 210, 243,
-    35, 6, 1, 211, 108, 4, 237, 213, 23, 210, 243, 35, 2, 1, 196, 71, 4, 208,
-    169, 35, 2, 1, 196, 71, 4, 237, 212, 35, 2, 1, 196, 71, 4, 208, 170, 23,
-    195, 169, 35, 2, 1, 196, 71, 4, 237, 213, 23, 195, 169, 35, 2, 1, 196,
-    71, 4, 208, 170, 23, 210, 243, 35, 2, 1, 196, 71, 4, 237, 213, 23, 210,
-    243, 35, 2, 1, 196, 71, 4, 208, 170, 23, 210, 4, 35, 2, 1, 196, 71, 4,
-    237, 213, 23, 210, 4, 35, 6, 1, 196, 71, 4, 237, 212, 35, 6, 1, 196, 71,
-    4, 237, 213, 23, 195, 169, 35, 6, 1, 196, 71, 4, 237, 213, 23, 210, 243,
-    35, 6, 1, 196, 71, 4, 237, 213, 23, 210, 4, 35, 2, 1, 211, 111, 4, 208,
-    169, 35, 2, 1, 211, 111, 4, 237, 212, 35, 2, 1, 211, 111, 4, 208, 170,
-    23, 195, 169, 35, 2, 1, 211, 111, 4, 237, 213, 23, 195, 169, 35, 2, 1,
-    211, 111, 4, 208, 170, 23, 210, 243, 35, 2, 1, 211, 111, 4, 237, 213, 23,
-    210, 243, 35, 2, 1, 211, 111, 4, 208, 170, 23, 210, 4, 35, 2, 1, 211,
-    111, 4, 237, 213, 23, 210, 4, 35, 6, 1, 211, 111, 4, 208, 169, 35, 6, 1,
-    211, 111, 4, 237, 212, 35, 6, 1, 211, 111, 4, 208, 170, 23, 195, 169, 35,
-    6, 1, 211, 111, 4, 237, 213, 23, 195, 169, 35, 6, 1, 211, 111, 4, 208,
-    170, 23, 210, 243, 35, 6, 1, 211, 111, 4, 237, 213, 23, 210, 243, 35, 6,
-    1, 211, 111, 4, 208, 170, 23, 210, 4, 35, 6, 1, 211, 111, 4, 237, 213,
-    23, 210, 4, 35, 2, 1, 251, 161, 4, 195, 169, 35, 2, 1, 251, 161, 4, 210,
-    243, 35, 2, 1, 234, 48, 4, 195, 169, 35, 2, 1, 234, 48, 4, 210, 243, 35,
-    2, 1, 233, 254, 4, 195, 169, 35, 2, 1, 233, 254, 4, 210, 243, 35, 2, 1,
-    223, 84, 4, 195, 169, 35, 2, 1, 223, 84, 4, 210, 243, 35, 2, 1, 211, 108,
-    4, 195, 169, 35, 2, 1, 211, 108, 4, 210, 243, 35, 2, 1, 196, 71, 4, 195,
-    169, 35, 2, 1, 196, 71, 4, 210, 243, 35, 2, 1, 211, 111, 4, 195, 169, 35,
-    2, 1, 211, 111, 4, 210, 243, 35, 2, 1, 251, 161, 4, 208, 170, 23, 191,
-    233, 35, 2, 1, 251, 161, 4, 237, 213, 23, 191, 233, 35, 2, 1, 251, 161,
-    4, 208, 170, 23, 195, 170, 23, 191, 233, 35, 2, 1, 251, 161, 4, 237, 213,
-    23, 195, 170, 23, 191, 233, 35, 2, 1, 251, 161, 4, 208, 170, 23, 210,
-    244, 23, 191, 233, 35, 2, 1, 251, 161, 4, 237, 213, 23, 210, 244, 23,
-    191, 233, 35, 2, 1, 251, 161, 4, 208, 170, 23, 210, 5, 23, 191, 233, 35,
-    2, 1, 251, 161, 4, 237, 213, 23, 210, 5, 23, 191, 233, 35, 6, 1, 251,
-    161, 4, 208, 170, 23, 208, 184, 35, 6, 1, 251, 161, 4, 237, 213, 23, 208,
-    184, 35, 6, 1, 251, 161, 4, 208, 170, 23, 195, 170, 23, 208, 184, 35, 6,
-    1, 251, 161, 4, 237, 213, 23, 195, 170, 23, 208, 184, 35, 6, 1, 251, 161,
-    4, 208, 170, 23, 210, 244, 23, 208, 184, 35, 6, 1, 251, 161, 4, 237, 213,
-    23, 210, 244, 23, 208, 184, 35, 6, 1, 251, 161, 4, 208, 170, 23, 210, 5,
-    23, 208, 184, 35, 6, 1, 251, 161, 4, 237, 213, 23, 210, 5, 23, 208, 184,
-    35, 2, 1, 233, 254, 4, 208, 170, 23, 191, 233, 35, 2, 1, 233, 254, 4,
-    237, 213, 23, 191, 233, 35, 2, 1, 233, 254, 4, 208, 170, 23, 195, 170,
-    23, 191, 233, 35, 2, 1, 233, 254, 4, 237, 213, 23, 195, 170, 23, 191,
-    233, 35, 2, 1, 233, 254, 4, 208, 170, 23, 210, 244, 23, 191, 233, 35, 2,
-    1, 233, 254, 4, 237, 213, 23, 210, 244, 23, 191, 233, 35, 2, 1, 233, 254,
-    4, 208, 170, 23, 210, 5, 23, 191, 233, 35, 2, 1, 233, 254, 4, 237, 213,
-    23, 210, 5, 23, 191, 233, 35, 6, 1, 233, 254, 4, 208, 170, 23, 208, 184,
-    35, 6, 1, 233, 254, 4, 237, 213, 23, 208, 184, 35, 6, 1, 233, 254, 4,
-    208, 170, 23, 195, 170, 23, 208, 184, 35, 6, 1, 233, 254, 4, 237, 213,
-    23, 195, 170, 23, 208, 184, 35, 6, 1, 233, 254, 4, 208, 170, 23, 210,
-    244, 23, 208, 184, 35, 6, 1, 233, 254, 4, 237, 213, 23, 210, 244, 23,
-    208, 184, 35, 6, 1, 233, 254, 4, 208, 170, 23, 210, 5, 23, 208, 184, 35,
-    6, 1, 233, 254, 4, 237, 213, 23, 210, 5, 23, 208, 184, 35, 2, 1, 211,
-    111, 4, 208, 170, 23, 191, 233, 35, 2, 1, 211, 111, 4, 237, 213, 23, 191,
-    233, 35, 2, 1, 211, 111, 4, 208, 170, 23, 195, 170, 23, 191, 233, 35, 2,
-    1, 211, 111, 4, 237, 213, 23, 195, 170, 23, 191, 233, 35, 2, 1, 211, 111,
-    4, 208, 170, 23, 210, 244, 23, 191, 233, 35, 2, 1, 211, 111, 4, 237, 213,
-    23, 210, 244, 23, 191, 233, 35, 2, 1, 211, 111, 4, 208, 170, 23, 210, 5,
-    23, 191, 233, 35, 2, 1, 211, 111, 4, 237, 213, 23, 210, 5, 23, 191, 233,
-    35, 6, 1, 211, 111, 4, 208, 170, 23, 208, 184, 35, 6, 1, 211, 111, 4,
-    237, 213, 23, 208, 184, 35, 6, 1, 211, 111, 4, 208, 170, 23, 195, 170,
-    23, 208, 184, 35, 6, 1, 211, 111, 4, 237, 213, 23, 195, 170, 23, 208,
-    184, 35, 6, 1, 211, 111, 4, 208, 170, 23, 210, 244, 23, 208, 184, 35, 6,
-    1, 211, 111, 4, 237, 213, 23, 210, 244, 23, 208, 184, 35, 6, 1, 211, 111,
-    4, 208, 170, 23, 210, 5, 23, 208, 184, 35, 6, 1, 211, 111, 4, 237, 213,
-    23, 210, 5, 23, 208, 184, 35, 2, 1, 251, 161, 4, 194, 254, 35, 2, 1, 251,
-    161, 4, 217, 146, 35, 2, 1, 251, 161, 4, 195, 170, 23, 191, 233, 35, 2,
-    1, 251, 161, 4, 191, 233, 35, 2, 1, 251, 161, 4, 210, 244, 23, 191, 233,
-    35, 2, 1, 251, 161, 4, 210, 4, 35, 2, 1, 251, 161, 4, 210, 5, 23, 191,
-    233, 35, 6, 1, 251, 161, 4, 194, 254, 35, 6, 1, 251, 161, 4, 217, 146,
-    35, 6, 1, 251, 161, 4, 195, 169, 35, 6, 1, 251, 161, 4, 210, 243, 35, 6,
-    1, 251, 161, 4, 208, 184, 35, 221, 30, 35, 208, 184, 35, 208, 169, 35,
-    210, 4, 35, 237, 36, 23, 210, 4, 35, 2, 1, 233, 254, 4, 195, 170, 23,
-    191, 233, 35, 2, 1, 233, 254, 4, 191, 233, 35, 2, 1, 233, 254, 4, 210,
-    244, 23, 191, 233, 35, 2, 1, 233, 254, 4, 210, 4, 35, 2, 1, 233, 254, 4,
-    210, 5, 23, 191, 233, 35, 6, 1, 234, 48, 4, 195, 169, 35, 6, 1, 234, 48,
-    4, 210, 243, 35, 6, 1, 233, 254, 4, 195, 169, 35, 6, 1, 233, 254, 4, 210,
-    243, 35, 6, 1, 233, 254, 4, 208, 184, 35, 208, 170, 23, 195, 169, 35,
-    208, 170, 23, 210, 243, 35, 208, 170, 23, 210, 4, 35, 2, 1, 223, 84, 4,
-    194, 254, 35, 2, 1, 223, 84, 4, 217, 146, 35, 2, 1, 223, 84, 4, 237, 36,
-    23, 195, 169, 35, 2, 1, 223, 84, 4, 237, 36, 23, 210, 243, 35, 2, 1, 223,
-    84, 4, 210, 4, 35, 2, 1, 223, 84, 4, 237, 36, 23, 210, 4, 35, 6, 1, 223,
-    84, 4, 194, 254, 35, 6, 1, 223, 84, 4, 217, 146, 35, 6, 1, 223, 84, 4,
-    195, 169, 35, 6, 1, 223, 84, 4, 210, 243, 35, 237, 213, 23, 195, 169, 35,
-    237, 213, 23, 210, 243, 35, 237, 213, 23, 210, 4, 35, 2, 1, 196, 71, 4,
-    194, 254, 35, 2, 1, 196, 71, 4, 217, 146, 35, 2, 1, 196, 71, 4, 237, 36,
-    23, 195, 169, 35, 2, 1, 196, 71, 4, 237, 36, 23, 210, 243, 35, 2, 1, 207,
-    4, 4, 208, 169, 35, 2, 1, 207, 4, 4, 237, 212, 35, 2, 1, 196, 71, 4, 210,
-    4, 35, 2, 1, 196, 71, 4, 237, 36, 23, 210, 4, 35, 6, 1, 196, 71, 4, 194,
-    254, 35, 6, 1, 196, 71, 4, 217, 146, 35, 6, 1, 196, 71, 4, 195, 169, 35,
-    6, 1, 196, 71, 4, 210, 243, 35, 6, 1, 207, 4, 4, 237, 212, 35, 237, 36,
-    23, 195, 169, 35, 237, 36, 23, 210, 243, 35, 195, 169, 35, 2, 1, 211,
-    111, 4, 195, 170, 23, 191, 233, 35, 2, 1, 211, 111, 4, 191, 233, 35, 2,
-    1, 211, 111, 4, 210, 244, 23, 191, 233, 35, 2, 1, 211, 111, 4, 210, 4,
-    35, 2, 1, 211, 111, 4, 210, 5, 23, 191, 233, 35, 6, 1, 211, 108, 4, 195,
-    169, 35, 6, 1, 211, 108, 4, 210, 243, 35, 6, 1, 211, 111, 4, 195, 169,
-    35, 6, 1, 211, 111, 4, 210, 243, 35, 6, 1, 211, 111, 4, 208, 184, 35,
-    210, 243, 35, 237, 212, 234, 104, 208, 30, 234, 115, 208, 30, 234, 104,
-    201, 247, 234, 115, 201, 247, 198, 219, 201, 247, 232, 126, 201, 247,
-    202, 134, 201, 247, 233, 13, 201, 247, 208, 152, 201, 247, 199, 4, 201,
-    247, 230, 79, 201, 247, 191, 78, 193, 75, 201, 247, 191, 78, 193, 75,
-    213, 29, 191, 78, 193, 75, 222, 196, 219, 215, 77, 206, 199, 77, 228, 88,
-    213, 30, 228, 88, 233, 13, 237, 215, 234, 104, 237, 215, 234, 115, 237,
-    215, 228, 241, 164, 55, 81, 219, 112, 55, 130, 219, 112, 45, 202, 170,
-    207, 252, 77, 50, 202, 170, 207, 252, 77, 202, 170, 218, 240, 207, 252,
-    77, 202, 170, 229, 132, 207, 252, 77, 45, 55, 207, 252, 77, 50, 55, 207,
-    252, 77, 55, 218, 240, 207, 252, 77, 55, 229, 132, 207, 252, 77, 238, 14,
-    55, 238, 14, 247, 248, 197, 238, 247, 248, 91, 75, 219, 236, 105, 75,
-    219, 236, 228, 241, 234, 120, 228, 86, 209, 61, 219, 113, 204, 10, 210,
-    128, 204, 10, 219, 215, 234, 113, 206, 199, 234, 113, 209, 34, 236, 232,
-    232, 144, 219, 215, 210, 252, 206, 199, 210, 252, 214, 215, 213, 37, 201,
-    247, 210, 14, 216, 50, 56, 210, 14, 199, 96, 198, 230, 56, 208, 215, 55,
-    208, 215, 197, 225, 208, 215, 207, 18, 208, 215, 207, 18, 55, 208, 215,
-    207, 18, 197, 225, 208, 215, 247, 96, 202, 170, 219, 219, 251, 116, 207,
-    252, 77, 202, 170, 206, 203, 251, 116, 207, 252, 77, 207, 83, 77, 55,
-    233, 216, 77, 223, 102, 210, 254, 196, 100, 246, 240, 198, 178, 247, 97,
-    223, 119, 209, 61, 250, 191, 228, 89, 247, 248, 232, 118, 202, 97, 45,
-    51, 248, 54, 4, 208, 7, 50, 51, 248, 54, 4, 208, 7, 55, 208, 13, 77, 208,
-    13, 233, 216, 77, 233, 216, 208, 13, 77, 198, 128, 3, 233, 255, 207, 18,
-    209, 142, 56, 62, 118, 247, 248, 62, 96, 247, 248, 130, 250, 193, 207,
-    18, 204, 25, 242, 220, 196, 77, 105, 250, 192, 251, 178, 195, 84, 242,
-    72, 216, 35, 56, 200, 129, 237, 215, 223, 93, 196, 100, 232, 187, 208,
-    152, 77, 115, 75, 208, 151, 208, 26, 208, 215, 232, 128, 75, 208, 151,
-    232, 226, 75, 208, 151, 105, 75, 208, 151, 232, 128, 75, 77, 235, 138,
-    238, 217, 197, 237, 81, 232, 128, 236, 138, 216, 213, 13, 201, 247, 193,
-    23, 222, 196, 232, 77, 251, 44, 223, 91, 198, 144, 223, 91, 204, 10, 223,
-    91, 209, 81, 219, 215, 223, 59, 206, 199, 223, 59, 232, 238, 201, 14,
-    223, 59, 209, 34, 236, 232, 223, 59, 223, 132, 200, 75, 200, 147, 252,
-    49, 200, 75, 200, 147, 223, 132, 9, 232, 146, 203, 133, 252, 49, 9, 232,
-    146, 203, 133, 214, 208, 17, 203, 134, 213, 33, 17, 203, 134, 200, 182,
-    191, 77, 200, 182, 8, 2, 1, 68, 200, 182, 134, 200, 182, 149, 200, 182,
-    169, 200, 182, 175, 200, 182, 171, 200, 182, 178, 200, 182, 108, 56, 200,
-    182, 216, 34, 200, 182, 234, 43, 56, 200, 182, 45, 210, 113, 200, 182,
-    50, 210, 113, 200, 182, 8, 2, 1, 215, 61, 200, 230, 191, 77, 200, 230,
-    107, 200, 230, 109, 200, 230, 138, 200, 230, 134, 200, 230, 149, 200,
-    230, 169, 200, 230, 175, 200, 230, 171, 200, 230, 178, 200, 230, 108, 56,
-    200, 230, 216, 34, 200, 230, 234, 43, 56, 200, 230, 45, 210, 113, 200,
-    230, 50, 210, 113, 8, 200, 230, 2, 1, 65, 8, 200, 230, 2, 1, 71, 8, 200,
-    230, 2, 1, 74, 8, 200, 230, 2, 1, 192, 235, 8, 200, 230, 2, 1, 205, 86,
-    8, 200, 230, 2, 1, 230, 116, 8, 200, 230, 2, 1, 222, 152, 8, 200, 230, 2,
-    1, 172, 8, 200, 230, 2, 1, 218, 168, 8, 200, 230, 2, 1, 215, 61, 8, 200,
-    230, 2, 1, 210, 236, 8, 200, 230, 2, 1, 206, 8, 8, 200, 230, 2, 1, 200,
-    43, 233, 233, 56, 242, 84, 56, 238, 200, 56, 232, 106, 232, 111, 56, 219,
-    91, 56, 216, 51, 56, 214, 234, 56, 209, 245, 56, 206, 36, 56, 193, 31,
-    56, 214, 80, 203, 99, 56, 236, 149, 56, 233, 234, 56, 221, 135, 56, 197,
-    81, 56, 235, 116, 56, 231, 138, 210, 27, 56, 209, 242, 56, 230, 174, 56,
-    250, 153, 56, 228, 166, 56, 247, 37, 56, 219, 81, 198, 33, 56, 201, 226,
-    56, 199, 93, 56, 223, 147, 206, 36, 56, 197, 60, 219, 91, 56, 213, 19,
-    87, 56, 217, 88, 56, 206, 59, 56, 220, 9, 56, 248, 147, 56, 202, 22, 56,
-    33, 45, 230, 13, 58, 33, 50, 230, 13, 58, 33, 179, 81, 219, 113, 210,
-    255, 33, 203, 40, 81, 219, 113, 210, 255, 33, 251, 85, 64, 58, 33, 242,
-    221, 64, 58, 33, 45, 64, 58, 33, 50, 64, 58, 33, 206, 189, 210, 255, 33,
-    242, 221, 206, 189, 210, 255, 33, 251, 85, 206, 189, 210, 255, 33, 115,
-    185, 58, 33, 232, 128, 185, 58, 33, 234, 99, 243, 10, 33, 234, 99, 201,
-    190, 33, 234, 99, 237, 32, 33, 234, 99, 243, 11, 249, 141, 33, 45, 50,
-    64, 58, 33, 234, 99, 205, 76, 33, 234, 99, 221, 218, 33, 234, 99, 196,
-    68, 209, 58, 197, 241, 33, 207, 19, 202, 24, 210, 255, 33, 55, 81, 201,
-    28, 210, 255, 33, 251, 95, 113, 33, 197, 225, 196, 102, 33, 193, 78, 248,
-    29, 58, 33, 118, 64, 210, 255, 33, 179, 55, 202, 24, 210, 255, 33, 96,
-    230, 13, 4, 181, 235, 118, 33, 118, 230, 13, 4, 181, 235, 118, 33, 45,
-    64, 60, 33, 50, 64, 60, 33, 250, 194, 58, 252, 55, 211, 146, 252, 38,
-    119, 199, 34, 200, 240, 235, 129, 6, 247, 193, 237, 125, 247, 27, 247,
-    22, 219, 113, 113, 247, 98, 211, 146, 247, 152, 196, 112, 233, 235, 239,
-    38, 205, 72, 237, 125, 233, 91, 27, 2, 232, 51, 27, 6, 230, 116, 248,
-    137, 6, 230, 116, 235, 129, 6, 230, 116, 209, 103, 239, 38, 209, 103,
-    239, 39, 139, 105, 209, 185, 27, 6, 68, 248, 137, 6, 68, 27, 6, 172, 27,
-    2, 172, 220, 143, 78, 249, 88, 113, 235, 129, 6, 215, 61, 212, 132, 56,
-    202, 5, 207, 95, 239, 5, 27, 6, 210, 236, 235, 129, 6, 210, 236, 235,
-    129, 6, 208, 104, 27, 6, 146, 248, 137, 6, 146, 235, 129, 6, 146, 208,
-    223, 199, 208, 207, 31, 204, 1, 77, 199, 107, 56, 198, 22, 87, 56, 195,
-    136, 235, 129, 6, 191, 166, 211, 18, 56, 211, 135, 56, 223, 93, 211, 135,
-    56, 248, 137, 6, 191, 166, 153, 35, 2, 1, 223, 83, 222, 3, 56, 251, 110,
-    56, 27, 6, 250, 120, 248, 137, 6, 247, 193, 234, 4, 113, 27, 2, 71, 27,
-    6, 71, 27, 6, 233, 175, 153, 6, 233, 175, 27, 6, 218, 168, 27, 2, 74,
-    131, 113, 248, 215, 113, 231, 39, 113, 237, 254, 113, 223, 137, 202, 3,
-    206, 122, 6, 208, 104, 233, 94, 56, 235, 129, 2, 209, 185, 235, 129, 2,
-    231, 211, 235, 129, 6, 231, 211, 235, 129, 6, 209, 185, 235, 129, 215,
-    60, 200, 201, 153, 49, 6, 232, 51, 153, 49, 6, 172, 207, 18, 49, 6, 172,
-    153, 49, 6, 192, 159, 235, 129, 43, 6, 238, 127, 235, 129, 43, 2, 238,
-    127, 235, 129, 43, 2, 71, 235, 129, 43, 2, 68, 235, 129, 43, 2, 223, 35,
-    208, 188, 219, 112, 153, 251, 137, 210, 14, 56, 251, 210, 153, 2, 233,
-    175, 16, 40, 205, 151, 202, 3, 193, 246, 232, 118, 91, 203, 243, 193,
-    246, 232, 118, 91, 213, 167, 193, 246, 232, 118, 91, 199, 86, 193, 246,
-    232, 118, 91, 199, 0, 193, 246, 232, 118, 105, 198, 253, 193, 246, 232,
-    118, 91, 233, 18, 193, 246, 232, 118, 105, 233, 17, 193, 246, 232, 118,
-    115, 233, 17, 193, 246, 232, 118, 232, 128, 233, 17, 193, 246, 232, 118,
-    91, 202, 124, 193, 246, 232, 118, 232, 226, 202, 122, 193, 246, 232, 118,
-    91, 234, 159, 193, 246, 232, 118, 115, 234, 157, 193, 246, 232, 118, 232,
-    226, 234, 157, 193, 246, 232, 118, 203, 247, 234, 157, 232, 118, 212,
-    133, 107, 206, 136, 212, 134, 107, 206, 136, 212, 134, 109, 206, 136,
-    212, 134, 138, 206, 136, 212, 134, 134, 206, 136, 212, 134, 149, 206,
-    136, 212, 134, 169, 206, 136, 212, 134, 175, 206, 136, 212, 134, 171,
-    206, 136, 212, 134, 178, 206, 136, 212, 134, 199, 95, 206, 136, 212, 134,
-    234, 127, 206, 136, 212, 134, 197, 37, 206, 136, 212, 134, 233, 15, 206,
-    136, 212, 134, 91, 228, 140, 206, 136, 212, 134, 232, 226, 228, 140, 206,
-    136, 212, 134, 91, 189, 2, 206, 136, 212, 134, 107, 2, 206, 136, 212,
-    134, 109, 2, 206, 136, 212, 134, 138, 2, 206, 136, 212, 134, 134, 2, 206,
-    136, 212, 134, 149, 2, 206, 136, 212, 134, 169, 2, 206, 136, 212, 134,
-    175, 2, 206, 136, 212, 134, 171, 2, 206, 136, 212, 134, 178, 2, 206, 136,
-    212, 134, 199, 95, 2, 206, 136, 212, 134, 234, 127, 2, 206, 136, 212,
-    134, 197, 37, 2, 206, 136, 212, 134, 233, 15, 2, 206, 136, 212, 134, 91,
-    228, 140, 2, 206, 136, 212, 134, 232, 226, 228, 140, 2, 206, 136, 212,
-    134, 91, 189, 206, 136, 212, 134, 91, 198, 230, 247, 194, 238, 127, 206,
-    136, 212, 134, 232, 226, 189, 206, 136, 212, 134, 199, 96, 189, 206, 136,
-    212, 134, 207, 18, 91, 228, 140, 8, 2, 1, 207, 18, 247, 193, 206, 136,
-    212, 134, 202, 136, 220, 4, 20, 206, 136, 212, 134, 233, 16, 234, 210,
-    20, 206, 136, 212, 134, 233, 16, 189, 206, 136, 212, 134, 91, 228, 141,
-    189, 193, 246, 232, 118, 191, 78, 198, 253, 153, 17, 109, 153, 17, 138,
-    118, 57, 196, 66, 57, 96, 57, 235, 119, 57, 45, 50, 57, 133, 144, 57,
-    186, 193, 105, 57, 186, 234, 204, 57, 202, 2, 234, 204, 57, 202, 2, 193,
-    105, 57, 118, 64, 4, 106, 96, 64, 4, 106, 118, 193, 139, 57, 96, 193,
-    139, 57, 118, 105, 229, 233, 57, 196, 66, 105, 229, 233, 57, 96, 105,
-    229, 233, 57, 235, 119, 105, 229, 233, 57, 118, 64, 4, 199, 215, 96, 64,
-    4, 199, 215, 118, 64, 232, 98, 164, 196, 66, 64, 232, 98, 164, 96, 64,
-    232, 98, 164, 235, 119, 64, 232, 98, 164, 133, 144, 64, 4, 249, 74, 118,
-    64, 4, 102, 96, 64, 4, 102, 118, 64, 4, 219, 4, 96, 64, 4, 219, 4, 45,
-    50, 193, 139, 57, 45, 50, 64, 4, 106, 235, 119, 191, 21, 57, 196, 66, 64,
-    4, 198, 136, 219, 214, 196, 66, 64, 4, 198, 136, 206, 197, 235, 119, 64,
-    4, 198, 136, 219, 214, 235, 119, 64, 4, 198, 136, 206, 197, 96, 64, 4,
-    239, 2, 235, 118, 235, 119, 64, 4, 239, 2, 219, 214, 251, 85, 198, 54,
-    204, 28, 57, 242, 221, 198, 54, 204, 28, 57, 186, 193, 105, 64, 119, 179,
-    164, 118, 64, 119, 249, 88, 139, 96, 64, 119, 164, 251, 85, 211, 77, 243,
-    11, 57, 242, 221, 211, 77, 243, 11, 57, 118, 230, 13, 4, 181, 196, 65,
-    118, 230, 13, 4, 181, 235, 118, 196, 66, 230, 13, 4, 181, 206, 197, 196,
-    66, 230, 13, 4, 181, 219, 214, 96, 230, 13, 4, 181, 196, 65, 96, 230, 13,
-    4, 181, 235, 118, 235, 119, 230, 13, 4, 181, 206, 197, 235, 119, 230, 13,
-    4, 181, 219, 214, 96, 64, 139, 118, 57, 196, 66, 64, 118, 79, 235, 119,
-    57, 118, 64, 139, 96, 57, 118, 210, 196, 250, 231, 196, 66, 210, 196,
-    250, 231, 96, 210, 196, 250, 231, 235, 119, 210, 196, 250, 231, 118, 230,
-    13, 139, 96, 230, 12, 96, 230, 13, 139, 118, 230, 12, 118, 55, 64, 4,
-    106, 45, 50, 55, 64, 4, 106, 96, 55, 64, 4, 106, 118, 55, 57, 196, 66,
-    55, 57, 96, 55, 57, 235, 119, 55, 57, 45, 50, 55, 57, 133, 144, 55, 57,
-    186, 193, 105, 55, 57, 186, 234, 204, 55, 57, 202, 2, 234, 204, 55, 57,
-    202, 2, 193, 105, 55, 57, 118, 197, 225, 57, 96, 197, 225, 57, 118, 201,
-    183, 57, 96, 201, 183, 57, 196, 66, 64, 4, 55, 106, 235, 119, 64, 4, 55,
-    106, 118, 237, 214, 57, 196, 66, 237, 214, 57, 96, 237, 214, 57, 235,
-    119, 237, 214, 57, 118, 64, 119, 164, 96, 64, 119, 164, 118, 63, 57, 196,
-    66, 63, 57, 96, 63, 57, 235, 119, 63, 57, 196, 66, 63, 64, 232, 98, 164,
-    196, 66, 63, 64, 211, 105, 210, 52, 196, 66, 63, 64, 211, 105, 210, 53,
-    4, 228, 241, 164, 196, 66, 63, 64, 211, 105, 210, 53, 4, 81, 164, 196,
-    66, 63, 55, 57, 196, 66, 63, 55, 64, 211, 105, 210, 52, 96, 63, 64, 232,
-    98, 193, 167, 186, 193, 105, 64, 119, 239, 1, 202, 2, 234, 204, 64, 119,
-    239, 1, 133, 144, 63, 57, 50, 64, 4, 2, 243, 10, 235, 119, 64, 118, 79,
-    196, 66, 57, 115, 96, 250, 231, 118, 64, 4, 81, 106, 96, 64, 4, 81, 106,
-    45, 50, 64, 4, 81, 106, 118, 64, 4, 55, 81, 106, 96, 64, 4, 55, 81, 106,
-    45, 50, 64, 4, 55, 81, 106, 118, 211, 74, 57, 96, 211, 74, 57, 45, 50,
-    211, 74, 57, 40, 251, 174, 242, 68, 210, 105, 237, 16, 199, 24, 233, 211,
-    199, 24, 236, 164, 213, 12, 233, 212, 234, 105, 203, 252, 223, 151, 214,
-    245, 234, 132, 211, 146, 213, 12, 251, 133, 234, 132, 211, 146, 2, 234,
-    132, 211, 146, 239, 32, 250, 220, 216, 190, 236, 164, 213, 12, 239, 34,
-    250, 220, 216, 190, 2, 239, 32, 250, 220, 216, 190, 234, 95, 79, 208,
-    190, 215, 60, 208, 200, 215, 60, 239, 9, 215, 60, 200, 201, 216, 35, 56,
-    216, 33, 56, 75, 209, 81, 236, 200, 202, 97, 203, 253, 216, 34, 250, 194,
-    211, 66, 206, 189, 211, 66, 247, 249, 211, 66, 51, 206, 128, 238, 191,
-    206, 128, 232, 121, 206, 128, 208, 186, 159, 223, 139, 50, 251, 115, 251,
-    115, 216, 226, 251, 115, 201, 225, 251, 115, 236, 203, 236, 164, 213, 12,
-    236, 207, 210, 119, 159, 213, 12, 210, 119, 159, 219, 29, 251, 125, 219,
-    29, 211, 56, 223, 99, 196, 92, 223, 113, 55, 223, 113, 197, 225, 223,
-    113, 239, 26, 223, 113, 200, 171, 223, 113, 195, 11, 223, 113, 242, 221,
-    223, 113, 242, 221, 239, 26, 223, 113, 251, 85, 239, 26, 223, 113, 199,
-    23, 249, 3, 207, 126, 208, 187, 75, 216, 34, 233, 219, 231, 144, 208,
-    187, 229, 0, 198, 153, 211, 66, 207, 18, 198, 152, 223, 93, 219, 245,
-    206, 8, 202, 172, 193, 138, 193, 10, 208, 200, 213, 12, 198, 152, 216,
-    35, 198, 152, 250, 186, 234, 45, 159, 213, 12, 250, 186, 234, 45, 159,
-    251, 40, 234, 45, 159, 251, 40, 247, 218, 213, 12, 252, 48, 234, 45, 159,
-    214, 105, 251, 40, 213, 21, 252, 48, 234, 45, 159, 251, 165, 234, 45,
-    159, 213, 12, 251, 165, 234, 45, 159, 251, 165, 234, 45, 211, 57, 234,
-    45, 159, 197, 225, 198, 152, 251, 175, 234, 45, 159, 234, 36, 159, 231,
-    143, 234, 36, 159, 237, 17, 248, 209, 251, 42, 199, 34, 219, 120, 231,
-    143, 234, 45, 159, 251, 40, 234, 45, 119, 211, 57, 199, 34, 223, 178,
-    211, 146, 223, 178, 79, 211, 57, 251, 40, 234, 45, 159, 242, 84, 234, 42,
-    234, 43, 242, 83, 206, 189, 223, 163, 234, 45, 159, 206, 189, 234, 45,
-    159, 238, 250, 159, 234, 3, 234, 41, 159, 201, 103, 234, 42, 237, 107,
-    234, 45, 159, 234, 45, 119, 247, 205, 237, 126, 216, 226, 247, 204, 208,
-    11, 234, 45, 159, 213, 12, 234, 45, 159, 228, 17, 159, 213, 12, 228, 17,
-    159, 201, 35, 234, 36, 159, 219, 180, 211, 57, 234, 45, 159, 230, 204,
-    211, 57, 234, 45, 159, 219, 180, 139, 234, 45, 159, 230, 204, 139, 234,
-    45, 159, 219, 180, 247, 218, 213, 12, 234, 45, 159, 230, 204, 247, 218,
-    213, 12, 234, 45, 159, 215, 145, 219, 179, 215, 145, 230, 203, 248, 209,
-    213, 12, 234, 36, 159, 213, 12, 219, 179, 213, 12, 230, 203, 214, 105,
-    219, 180, 213, 21, 234, 45, 159, 214, 105, 230, 204, 213, 21, 234, 45,
-    159, 219, 180, 211, 57, 234, 36, 159, 230, 204, 211, 57, 234, 36, 159,
-    214, 105, 219, 180, 213, 21, 234, 36, 159, 214, 105, 230, 204, 213, 21,
-    234, 36, 159, 219, 180, 211, 57, 230, 203, 230, 204, 211, 57, 219, 179,
-    214, 105, 219, 180, 213, 21, 230, 203, 214, 105, 230, 204, 213, 21, 219,
-    179, 208, 231, 200, 220, 208, 232, 211, 57, 234, 45, 159, 200, 221, 211,
-    57, 234, 45, 159, 208, 232, 211, 57, 234, 36, 159, 200, 221, 211, 57,
-    234, 36, 159, 236, 164, 213, 12, 208, 234, 236, 164, 213, 12, 200, 222,
-    200, 229, 211, 146, 200, 181, 211, 146, 213, 12, 42, 200, 229, 211, 146,
-    213, 12, 42, 200, 181, 211, 146, 200, 229, 79, 211, 57, 234, 45, 159,
-    200, 181, 79, 211, 57, 234, 45, 159, 214, 105, 42, 200, 229, 79, 213, 21,
-    234, 45, 159, 214, 105, 42, 200, 181, 79, 213, 21, 234, 45, 159, 200,
-    229, 79, 4, 213, 12, 234, 45, 159, 200, 181, 79, 4, 213, 12, 234, 45,
-    159, 215, 124, 215, 125, 215, 126, 215, 125, 196, 92, 51, 223, 178, 211,
-    146, 51, 211, 46, 211, 146, 51, 223, 178, 79, 211, 57, 234, 45, 159, 51,
-    211, 46, 79, 211, 57, 234, 45, 159, 51, 247, 111, 51, 238, 181, 47, 209,
-    81, 47, 216, 34, 47, 198, 144, 47, 236, 200, 202, 97, 47, 75, 211, 66,
-    47, 206, 189, 211, 66, 47, 250, 194, 211, 66, 47, 234, 42, 47, 237, 215,
-    112, 209, 81, 112, 216, 34, 112, 198, 144, 112, 75, 211, 66, 50, 199,
-    228, 45, 199, 228, 144, 199, 228, 133, 199, 228, 250, 197, 216, 1, 197,
-    201, 232, 152, 197, 225, 81, 249, 88, 50, 197, 57, 55, 81, 249, 88, 55,
-    50, 197, 57, 236, 164, 213, 12, 208, 179, 213, 12, 197, 201, 236, 164,
-    213, 12, 232, 153, 214, 108, 55, 81, 249, 88, 55, 50, 197, 57, 208, 232,
-    196, 105, 207, 65, 200, 221, 196, 105, 207, 65, 213, 18, 200, 244, 211,
-    146, 239, 32, 250, 220, 213, 18, 200, 243, 213, 18, 200, 244, 79, 211,
-    57, 234, 45, 159, 239, 32, 250, 220, 213, 18, 200, 244, 211, 57, 234, 45,
-    159, 211, 46, 211, 146, 223, 178, 211, 146, 215, 131, 229, 189, 239, 43,
-    217, 27, 223, 110, 192, 192, 214, 224, 213, 20, 50, 251, 116, 4, 251, 16,
-    50, 197, 241, 215, 60, 219, 29, 251, 125, 215, 60, 219, 29, 211, 56, 215,
-    60, 223, 99, 215, 60, 196, 92, 237, 33, 211, 66, 75, 211, 66, 201, 103,
-    211, 66, 236, 200, 198, 144, 248, 63, 45, 213, 18, 233, 93, 204, 24, 208,
-    200, 50, 213, 18, 233, 93, 204, 24, 208, 200, 45, 204, 24, 208, 200, 50,
-    204, 24, 208, 200, 207, 18, 198, 153, 234, 42, 238, 171, 219, 29, 211,
-    56, 238, 171, 219, 29, 251, 125, 55, 200, 228, 55, 200, 180, 55, 223, 99,
-    55, 196, 92, 209, 115, 234, 45, 23, 210, 119, 159, 219, 180, 4, 236, 140,
-    230, 204, 4, 236, 140, 195, 83, 215, 145, 219, 179, 195, 83, 215, 145,
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-    119, 211, 57, 219, 179, 234, 45, 119, 211, 57, 219, 179, 234, 45, 119,
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-    249, 88, 250, 183, 234, 95, 79, 228, 241, 106, 234, 132, 79, 4, 75, 58,
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-    248, 54, 116, 239, 1, 50, 51, 248, 54, 233, 203, 50, 51, 248, 54, 110,
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-    241, 4, 243, 10, 237, 97, 16, 156, 133, 23, 228, 241, 4, 243, 10, 237,
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-    237, 97, 16, 156, 133, 23, 228, 241, 4, 193, 138, 237, 97, 16, 156, 144,
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-    23, 198, 54, 219, 224, 237, 97, 16, 156, 81, 23, 248, 77, 219, 224, 51,
-    232, 159, 207, 23, 113, 234, 149, 113, 81, 219, 113, 233, 203, 216, 159,
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-    122, 55, 197, 241, 62, 206, 203, 55, 197, 242, 4, 81, 164, 62, 219, 219,
-    55, 197, 242, 4, 81, 164, 62, 206, 203, 197, 242, 4, 55, 81, 164, 251,
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-    40, 249, 140, 16, 40, 228, 241, 199, 230, 16, 40, 219, 113, 233, 50, 16,
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-    16, 40, 214, 106, 252, 51, 16, 40, 200, 69, 223, 228, 16, 40, 234, 95,
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-    16, 40, 200, 226, 16, 40, 234, 14, 16, 40, 233, 7, 204, 10, 16, 40, 230,
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-    232, 149, 211, 161, 248, 232, 248, 5, 211, 161, 248, 70, 198, 178, 211,
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-    161, 237, 215, 211, 161, 238, 157, 252, 55, 212, 136, 211, 161, 55, 249,
-    141, 47, 17, 107, 47, 17, 109, 47, 17, 138, 47, 17, 134, 47, 17, 149, 47,
-    17, 169, 47, 17, 175, 47, 17, 171, 47, 17, 178, 47, 31, 199, 95, 47, 31,
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-    233, 19, 47, 31, 202, 130, 47, 31, 203, 244, 47, 31, 234, 161, 47, 31,
-    213, 171, 47, 31, 197, 32, 127, 17, 107, 127, 17, 109, 127, 17, 138, 127,
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-    136, 232, 80, 201, 63, 17, 203, 247, 232, 80, 201, 63, 17, 234, 164, 232,
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-    232, 80, 201, 63, 31, 202, 131, 232, 80, 201, 63, 31, 203, 245, 232, 80,
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-    1, 68, 127, 8, 2, 1, 223, 35, 127, 8, 2, 1, 222, 152, 127, 8, 2, 1, 172,
-    127, 8, 2, 1, 218, 168, 127, 8, 2, 1, 215, 61, 127, 8, 2, 1, 74, 127, 8,
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-    206, 8, 127, 8, 2, 1, 200, 43, 127, 8, 2, 1, 66, 127, 8, 2, 1, 196, 12,
-    127, 8, 2, 1, 193, 224, 127, 8, 2, 1, 192, 235, 127, 8, 2, 1, 192, 159,
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-    1, 247, 193, 47, 8, 6, 1, 238, 127, 47, 8, 6, 1, 71, 47, 8, 6, 1, 233,
-    175, 47, 8, 6, 1, 232, 51, 47, 8, 6, 1, 230, 116, 47, 8, 6, 1, 68, 47, 8,
-    6, 1, 223, 35, 47, 8, 6, 1, 222, 152, 47, 8, 6, 1, 172, 47, 8, 6, 1, 218,
-    168, 47, 8, 6, 1, 215, 61, 47, 8, 6, 1, 74, 47, 8, 6, 1, 210, 236, 47, 8,
-    6, 1, 208, 104, 47, 8, 6, 1, 146, 47, 8, 6, 1, 206, 8, 47, 8, 6, 1, 200,
-    43, 47, 8, 6, 1, 66, 47, 8, 6, 1, 196, 12, 47, 8, 6, 1, 193, 224, 47, 8,
-    6, 1, 192, 235, 47, 8, 6, 1, 192, 159, 47, 8, 6, 1, 191, 166, 47, 8, 2,
-    1, 65, 47, 8, 2, 1, 250, 120, 47, 8, 2, 1, 247, 193, 47, 8, 2, 1, 238,
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-    2, 1, 230, 116, 47, 8, 2, 1, 68, 47, 8, 2, 1, 223, 35, 47, 8, 2, 1, 222,
-    152, 47, 8, 2, 1, 172, 47, 8, 2, 1, 218, 168, 47, 8, 2, 1, 215, 61, 47,
-    8, 2, 1, 74, 47, 8, 2, 1, 210, 236, 47, 8, 2, 1, 208, 104, 47, 8, 2, 1,
-    146, 47, 8, 2, 1, 206, 8, 47, 8, 2, 1, 200, 43, 47, 8, 2, 1, 66, 47, 8,
-    2, 1, 196, 12, 47, 8, 2, 1, 193, 224, 47, 8, 2, 1, 192, 235, 47, 8, 2, 1,
-    192, 159, 47, 8, 2, 1, 191, 166, 47, 17, 191, 77, 214, 106, 47, 31, 234,
-    127, 214, 106, 47, 31, 197, 37, 214, 106, 47, 31, 198, 251, 214, 106, 47,
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-    17, 138, 55, 47, 17, 134, 55, 47, 17, 149, 55, 47, 17, 169, 55, 47, 17,
-    175, 55, 47, 17, 171, 55, 47, 17, 178, 55, 47, 31, 199, 95, 214, 106, 47,
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-    228, 240, 111, 122, 88, 197, 225, 237, 216, 228, 240, 111, 122, 156, 197,
-    225, 237, 216, 195, 135, 111, 122, 88, 197, 225, 237, 216, 195, 135, 111,
-    122, 156, 208, 26, 237, 216, 228, 240, 111, 122, 88, 208, 26, 237, 216,
-    228, 240, 111, 122, 156, 208, 26, 237, 216, 195, 135, 111, 122, 88, 208,
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-    23, 50, 229, 217, 111, 122, 144, 88, 23, 50, 219, 132, 111, 122, 88, 144,
-    23, 183, 111, 122, 156, 144, 23, 219, 224, 111, 122, 144, 156, 23, 45,
-    229, 217, 111, 122, 144, 88, 23, 45, 219, 132, 111, 122, 88, 144, 23,
-    219, 224, 111, 122, 156, 133, 23, 183, 111, 122, 133, 156, 23, 50, 229,
-    217, 111, 122, 133, 88, 23, 50, 219, 132, 111, 122, 88, 133, 23, 183,
-    111, 122, 156, 133, 23, 219, 224, 111, 122, 133, 156, 23, 45, 229, 217,
-    111, 122, 133, 88, 23, 45, 219, 132, 111, 122, 88, 133, 23, 219, 224,
-    111, 122, 156, 81, 23, 183, 111, 122, 81, 156, 23, 50, 229, 217, 111,
-    122, 133, 88, 23, 50, 144, 219, 132, 111, 122, 144, 88, 23, 50, 133, 219,
-    132, 111, 122, 81, 88, 23, 50, 219, 132, 111, 122, 144, 156, 23, 50, 133,
-    229, 217, 111, 122, 133, 156, 23, 50, 144, 229, 217, 111, 122, 88, 81,
-    23, 183, 111, 122, 156, 81, 23, 219, 224, 111, 122, 81, 156, 23, 45, 229,
-    217, 111, 122, 133, 88, 23, 45, 144, 219, 132, 111, 122, 144, 88, 23, 45,
-    133, 219, 132, 111, 122, 81, 88, 23, 45, 219, 132, 111, 122, 144, 156,
-    23, 45, 133, 229, 217, 111, 122, 133, 156, 23, 45, 144, 229, 217, 111,
-    122, 88, 81, 23, 219, 224, 111, 122, 156, 144, 23, 228, 240, 111, 122,
-    45, 88, 23, 50, 144, 219, 132, 111, 122, 50, 88, 23, 45, 144, 219, 132,
-    111, 122, 144, 156, 23, 228, 241, 229, 217, 111, 122, 144, 88, 23, 228,
-    241, 219, 132, 111, 122, 50, 156, 23, 45, 144, 229, 217, 111, 122, 45,
-    156, 23, 50, 144, 229, 217, 111, 122, 88, 144, 23, 228, 240, 111, 122,
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-    241, 214, 106, 47, 17, 169, 236, 241, 214, 106, 47, 17, 175, 236, 241,
-    214, 106, 47, 17, 171, 236, 241, 214, 106, 47, 17, 178, 236, 241, 214,
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-    109, 236, 241, 47, 49, 17, 138, 236, 241, 47, 49, 17, 134, 236, 241, 47,
-    49, 17, 149, 236, 241, 47, 49, 17, 169, 236, 241, 47, 49, 17, 175, 236,
-    241, 47, 49, 17, 171, 236, 241, 47, 49, 17, 178, 236, 241, 47, 49, 31,
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-    17, 109, 236, 241, 214, 106, 47, 49, 17, 138, 236, 241, 214, 106, 47, 49,
-    17, 134, 236, 241, 214, 106, 47, 49, 17, 149, 236, 241, 214, 106, 47, 49,
-    17, 169, 236, 241, 214, 106, 47, 49, 17, 175, 236, 241, 214, 106, 47, 49,
-    17, 171, 236, 241, 214, 106, 47, 49, 17, 178, 236, 241, 214, 106, 47, 49,
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-    197, 240, 96, 57, 237, 214, 197, 240, 96, 57, 88, 237, 214, 197, 240, 96,
-    57, 62, 96, 57, 198, 225, 198, 52, 96, 250, 235, 198, 225, 248, 75, 96,
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-    62, 238, 163, 196, 66, 23, 96, 57, 201, 187, 62, 96, 57, 88, 239, 56, 62,
-    96, 57, 206, 202, 63, 96, 57, 219, 218, 63, 96, 57, 249, 145, 203, 151,
-    63, 96, 57, 232, 95, 203, 151, 63, 96, 57, 88, 110, 206, 201, 63, 96, 57,
-    88, 116, 206, 201, 63, 96, 57, 213, 8, 110, 206, 201, 63, 96, 57, 238,
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-    88, 96, 57, 248, 138, 202, 2, 234, 204, 57, 248, 138, 96, 57, 248, 138,
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-    234, 204, 64, 23, 202, 2, 234, 204, 57, 202, 2, 234, 204, 64, 23, 202, 2,
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-    234, 204, 57, 206, 180, 237, 39, 238, 210, 202, 2, 234, 204, 57, 186,
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-    17, 251, 85, 57, 198, 54, 251, 17, 242, 221, 64, 4, 216, 34, 198, 54,
-    251, 17, 251, 85, 64, 4, 209, 81, 110, 50, 204, 27, 242, 221, 57, 110,
-    45, 204, 27, 251, 85, 57, 251, 85, 242, 219, 243, 11, 57, 242, 221, 242,
-    219, 243, 11, 57, 96, 64, 93, 203, 40, 118, 57, 118, 64, 93, 203, 40, 96,
-    57, 203, 40, 96, 64, 93, 118, 57, 96, 64, 4, 108, 60, 118, 64, 4, 108,
-    60, 96, 64, 198, 216, 192, 235, 45, 50, 64, 198, 216, 2, 243, 10, 196,
-    66, 197, 13, 64, 232, 98, 2, 243, 10, 45, 181, 133, 50, 181, 144, 230,
-    12, 45, 181, 144, 50, 181, 133, 230, 12, 133, 181, 50, 144, 181, 45, 230,
-    12, 133, 181, 45, 144, 181, 50, 230, 12, 45, 181, 133, 50, 181, 133, 230,
-    12, 133, 181, 50, 144, 181, 50, 230, 12, 45, 181, 144, 50, 181, 144, 230,
-    12, 133, 181, 45, 144, 181, 45, 230, 12, 118, 230, 13, 4, 181, 133, 119,
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-    119, 164, 235, 119, 230, 13, 4, 181, 50, 119, 164, 118, 230, 13, 4, 181,
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-    181, 45, 119, 164, 235, 119, 230, 13, 4, 181, 45, 119, 164, 118, 230, 13,
-    4, 181, 133, 232, 98, 164, 96, 230, 13, 4, 181, 133, 232, 98, 164, 196,
-    66, 230, 13, 4, 181, 50, 232, 98, 164, 235, 119, 230, 13, 4, 181, 50,
-    232, 98, 164, 118, 230, 13, 4, 181, 144, 232, 98, 164, 96, 230, 13, 4,
-    181, 144, 232, 98, 164, 196, 66, 230, 13, 4, 181, 45, 232, 98, 164, 235,
-    119, 230, 13, 4, 181, 45, 232, 98, 164, 118, 230, 13, 4, 181, 133, 93,
-    118, 230, 13, 4, 181, 235, 123, 196, 66, 230, 13, 4, 181, 45, 248, 216,
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-    13, 4, 181, 183, 118, 230, 13, 4, 181, 133, 93, 96, 230, 13, 4, 181, 196,
-    77, 118, 230, 13, 4, 181, 144, 93, 96, 230, 13, 4, 181, 235, 123, 96,
-    230, 13, 4, 181, 133, 93, 118, 230, 13, 4, 181, 196, 77, 96, 230, 13, 4,
-    181, 144, 93, 118, 230, 13, 4, 181, 235, 123, 118, 230, 13, 4, 181, 133,
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-    96, 230, 13, 4, 181, 133, 93, 179, 237, 215, 96, 230, 13, 4, 181, 144,
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-    119, 230, 13, 4, 181, 183, 235, 119, 230, 13, 4, 181, 45, 248, 216, 196,
-    66, 230, 13, 4, 181, 183, 50, 55, 64, 4, 206, 113, 229, 235, 234, 43, 3,
-    93, 96, 57, 198, 153, 211, 67, 93, 96, 57, 118, 64, 93, 198, 153, 211,
-    66, 96, 64, 93, 198, 153, 211, 66, 96, 64, 93, 251, 165, 234, 45, 159,
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-    200, 229, 93, 96, 57, 118, 64, 198, 216, 200, 228, 200, 181, 93, 118, 57,
-    45, 232, 237, 199, 215, 50, 232, 237, 199, 215, 133, 232, 237, 199, 215,
-    144, 232, 237, 199, 215, 197, 225, 81, 249, 88, 237, 112, 191, 167, 213,
-    10, 201, 201, 191, 167, 213, 10, 196, 255, 242, 83, 45, 63, 238, 171,
-    248, 53, 50, 63, 238, 171, 248, 53, 45, 63, 210, 113, 50, 63, 210, 113,
-    191, 167, 213, 10, 45, 223, 178, 248, 53, 191, 167, 213, 10, 50, 223,
-    178, 248, 53, 191, 167, 213, 10, 45, 248, 166, 248, 53, 191, 167, 213,
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-    4, 196, 103, 45, 51, 248, 54, 4, 198, 183, 223, 163, 198, 54, 239, 1, 50,
-    51, 248, 54, 4, 198, 183, 223, 163, 248, 77, 239, 1, 45, 51, 248, 54, 4,
-    198, 183, 223, 163, 248, 77, 239, 1, 50, 51, 248, 54, 4, 198, 183, 223,
-    163, 198, 54, 239, 1, 45, 251, 116, 248, 54, 4, 236, 140, 50, 251, 116,
-    248, 54, 4, 236, 140, 45, 251, 17, 219, 180, 248, 53, 50, 251, 17, 230,
-    204, 248, 53, 55, 45, 251, 17, 230, 204, 248, 53, 55, 50, 251, 17, 219,
-    180, 248, 53, 45, 62, 198, 42, 203, 103, 248, 53, 50, 62, 198, 42, 203,
-    103, 248, 53, 235, 138, 233, 39, 81, 191, 21, 219, 112, 216, 226, 251,
-    116, 211, 69, 219, 224, 50, 251, 116, 195, 168, 4, 201, 190, 216, 226,
-    50, 251, 116, 4, 236, 140, 251, 116, 4, 206, 9, 223, 117, 252, 47, 251,
-    115, 201, 225, 251, 116, 211, 69, 219, 224, 201, 225, 251, 116, 211, 69,
-    196, 77, 153, 251, 115, 207, 18, 251, 115, 251, 116, 4, 196, 103, 207,
-    18, 251, 116, 4, 196, 103, 211, 172, 251, 116, 211, 69, 196, 77, 211,
-    172, 251, 116, 211, 69, 235, 123, 216, 226, 251, 116, 4, 211, 77, 250,
-    251, 234, 91, 223, 163, 64, 209, 58, 133, 23, 183, 216, 226, 251, 116, 4,
-    211, 77, 250, 251, 234, 91, 223, 163, 64, 209, 58, 133, 23, 219, 224,
-    216, 226, 251, 116, 4, 211, 77, 250, 251, 234, 91, 223, 163, 64, 209, 58,
-    144, 23, 183, 216, 226, 251, 116, 4, 211, 77, 250, 251, 234, 91, 223,
-    163, 64, 209, 58, 144, 23, 219, 224, 216, 226, 251, 116, 4, 211, 77, 250,
-    251, 234, 91, 223, 163, 64, 209, 58, 50, 23, 196, 77, 216, 226, 251, 116,
-    4, 211, 77, 250, 251, 234, 91, 223, 163, 64, 209, 58, 45, 23, 196, 77,
-    216, 226, 251, 116, 4, 211, 77, 250, 251, 234, 91, 223, 163, 64, 209, 58,
-    50, 23, 235, 123, 216, 226, 251, 116, 4, 211, 77, 250, 251, 234, 91, 223,
-    163, 64, 209, 58, 45, 23, 235, 123, 207, 18, 234, 105, 203, 252, 234,
-    105, 203, 253, 4, 211, 6, 234, 105, 203, 253, 4, 2, 243, 11, 58, 234,
-    105, 203, 253, 4, 50, 64, 58, 234, 105, 203, 253, 4, 45, 64, 58, 243, 11,
-    4, 228, 241, 164, 47, 81, 164, 47, 210, 118, 47, 207, 19, 202, 23, 47,
-    209, 254, 243, 11, 236, 206, 247, 205, 228, 241, 249, 88, 23, 198, 54,
-    132, 236, 206, 247, 205, 81, 164, 243, 11, 4, 200, 183, 192, 235, 47,
-    251, 83, 236, 200, 56, 133, 64, 198, 216, 243, 10, 47, 63, 247, 248, 47,
-    247, 248, 47, 219, 179, 47, 230, 203, 243, 11, 4, 2, 243, 11, 119, 199,
-    34, 183, 243, 11, 4, 105, 228, 241, 201, 16, 119, 199, 34, 183, 112, 206,
-    180, 237, 39, 202, 97, 112, 233, 83, 237, 39, 202, 97, 112, 250, 193,
-    112, 2, 243, 10, 112, 201, 190, 105, 222, 198, 201, 188, 197, 242, 4, 75,
-    58, 197, 242, 4, 196, 103, 206, 9, 223, 163, 197, 241, 197, 242, 4, 204,
-    4, 250, 183, 248, 76, 50, 197, 242, 93, 45, 197, 241, 45, 197, 242, 248,
-    216, 81, 164, 81, 249, 88, 248, 216, 50, 197, 241, 248, 64, 4, 45, 132,
-    248, 139, 248, 64, 4, 50, 132, 248, 139, 62, 248, 63, 25, 4, 45, 132,
-    248, 139, 25, 4, 50, 132, 248, 139, 63, 228, 174, 62, 228, 174, 45, 193,
-    72, 233, 39, 50, 193, 72, 233, 39, 45, 55, 193, 72, 233, 39, 50, 55, 193,
-    72, 233, 39, 223, 155, 223, 139, 198, 179, 139, 223, 139, 223, 140, 214,
-    108, 4, 81, 164, 235, 132, 215, 131, 51, 4, 239, 25, 211, 11, 223, 152,
-    250, 219, 202, 254, 208, 200, 234, 43, 3, 23, 202, 99, 210, 118, 234, 43,
-    3, 23, 202, 99, 210, 119, 4, 198, 153, 58, 228, 17, 119, 23, 202, 99,
-    210, 118, 231, 14, 201, 101, 199, 22, 235, 122, 197, 242, 4, 45, 132,
-    248, 139, 235, 122, 197, 242, 4, 50, 132, 248, 139, 62, 237, 33, 4, 144,
-    57, 62, 218, 232, 63, 243, 11, 4, 144, 57, 62, 243, 11, 4, 144, 57, 234,
-    25, 63, 201, 190, 234, 25, 62, 201, 190, 234, 25, 63, 237, 32, 234, 25,
-    62, 237, 32, 234, 25, 63, 243, 10, 234, 25, 62, 243, 10, 206, 51, 207,
-    19, 202, 24, 211, 66, 202, 24, 4, 211, 6, 207, 19, 202, 24, 4, 228, 241,
-    106, 248, 175, 202, 23, 248, 175, 207, 19, 202, 23, 55, 209, 81, 197,
-    225, 209, 81, 219, 219, 238, 163, 251, 116, 248, 53, 206, 203, 238, 163,
-    251, 116, 248, 53, 198, 137, 216, 32, 215, 60, 47, 75, 211, 66, 215, 60,
-    47, 108, 211, 66, 215, 60, 47, 25, 211, 66, 215, 60, 196, 93, 211, 67, 4,
-    236, 140, 215, 60, 196, 93, 211, 67, 4, 209, 81, 215, 60, 51, 223, 100,
-    211, 66, 215, 60, 51, 196, 93, 211, 66, 105, 219, 29, 23, 211, 66, 105,
-    219, 29, 211, 57, 211, 66, 215, 60, 25, 211, 66, 215, 236, 105, 200, 204,
-    200, 202, 4, 223, 113, 208, 26, 223, 114, 211, 66, 232, 246, 210, 107,
-    223, 113, 223, 114, 4, 55, 106, 223, 114, 250, 143, 4, 202, 97, 243, 3,
-    232, 76, 251, 85, 223, 111, 219, 113, 223, 112, 4, 207, 91, 210, 86, 250,
-    245, 209, 52, 219, 113, 223, 112, 4, 204, 27, 210, 86, 250, 245, 209, 52,
-    219, 113, 223, 112, 213, 12, 223, 157, 199, 34, 209, 52, 223, 114, 250,
-    245, 42, 209, 62, 211, 66, 208, 19, 223, 114, 211, 66, 223, 114, 4, 118,
-    64, 4, 102, 223, 114, 4, 25, 56, 223, 114, 4, 223, 99, 223, 114, 4, 196,
-    92, 223, 114, 4, 211, 6, 223, 114, 4, 196, 103, 222, 199, 220, 13, 45,
-    197, 242, 211, 66, 191, 167, 213, 10, 205, 92, 239, 62, 191, 167, 213,
-    10, 205, 92, 209, 126, 191, 167, 213, 10, 205, 92, 208, 195, 108, 3, 4,
-    2, 243, 11, 58, 108, 3, 4, 243, 2, 252, 61, 58, 108, 3, 4, 198, 153, 58,
-    108, 3, 4, 75, 60, 108, 3, 4, 198, 153, 60, 108, 3, 4, 200, 230, 109,
-    108, 3, 4, 62, 197, 241, 216, 35, 3, 4, 242, 75, 58, 216, 35, 3, 4, 75,
-    60, 216, 35, 3, 4, 233, 83, 236, 138, 216, 35, 3, 4, 206, 180, 236, 138,
-    108, 3, 223, 163, 45, 132, 243, 10, 108, 3, 223, 163, 50, 132, 243, 10,
-    195, 152, 211, 57, 238, 218, 208, 200, 215, 127, 3, 4, 75, 58, 215, 127,
-    3, 4, 196, 103, 204, 24, 208, 201, 4, 248, 77, 242, 218, 202, 68, 208,
-    200, 215, 127, 3, 223, 163, 45, 132, 243, 10, 215, 127, 3, 223, 163, 50,
-    132, 243, 10, 47, 215, 127, 3, 4, 243, 2, 252, 60, 215, 127, 3, 223, 163,
-    55, 243, 10, 47, 236, 200, 56, 108, 3, 223, 163, 197, 241, 216, 35, 3,
-    223, 163, 197, 241, 215, 127, 3, 223, 163, 197, 241, 223, 108, 208, 200,
-    206, 198, 223, 108, 208, 200, 191, 167, 213, 10, 207, 64, 239, 62, 251,
-    147, 211, 57, 239, 9, 223, 100, 4, 236, 140, 196, 93, 4, 216, 35, 56,
-    196, 93, 4, 211, 6, 223, 100, 4, 211, 6, 223, 100, 4, 219, 29, 251, 125,
-    196, 93, 4, 219, 29, 211, 56, 196, 93, 93, 223, 99, 223, 100, 93, 196,
-    92, 196, 93, 93, 249, 88, 93, 223, 99, 223, 100, 93, 249, 88, 93, 196,
-    92, 196, 93, 248, 216, 23, 222, 198, 4, 196, 92, 223, 100, 248, 216, 23,
-    222, 198, 4, 223, 99, 242, 219, 196, 93, 4, 204, 3, 242, 219, 223, 100,
-    4, 204, 3, 55, 51, 223, 99, 55, 51, 196, 92, 242, 219, 196, 93, 4, 204,
-    4, 23, 202, 68, 208, 200, 219, 29, 23, 4, 75, 58, 219, 29, 211, 57, 4,
-    75, 58, 55, 219, 29, 251, 125, 55, 219, 29, 211, 56, 105, 223, 101, 219,
-    29, 251, 125, 105, 223, 101, 219, 29, 211, 56, 202, 80, 220, 13, 211, 56,
-    202, 80, 220, 13, 251, 125, 219, 29, 211, 57, 211, 1, 219, 29, 251, 125,
-    219, 29, 23, 4, 82, 201, 80, 219, 29, 211, 57, 4, 82, 201, 80, 219, 29,
-    23, 4, 228, 241, 237, 215, 219, 29, 211, 57, 4, 228, 241, 237, 215, 219,
-    29, 23, 4, 55, 211, 6, 219, 29, 23, 4, 196, 103, 219, 29, 23, 4, 55, 196,
-    103, 2, 195, 149, 4, 196, 103, 219, 29, 211, 57, 4, 55, 211, 6, 219, 29,
-    211, 57, 4, 55, 196, 103, 191, 167, 213, 10, 236, 152, 251, 75, 191, 167,
-    213, 10, 207, 137, 251, 75, 234, 43, 3, 4, 75, 60, 228, 17, 4, 75, 58,
-    197, 225, 228, 241, 249, 88, 4, 55, 81, 106, 197, 225, 228, 241, 249, 88,
-    4, 197, 225, 81, 106, 198, 153, 211, 67, 4, 75, 58, 198, 153, 211, 67, 4,
-    206, 180, 236, 138, 202, 180, 216, 35, 202, 179, 239, 49, 4, 75, 58, 234,
-    43, 4, 250, 193, 251, 165, 234, 45, 119, 4, 243, 2, 252, 60, 251, 40,
-    234, 45, 211, 57, 234, 45, 159, 234, 43, 3, 93, 108, 56, 108, 3, 93, 234,
-    43, 56, 234, 43, 3, 93, 198, 153, 211, 66, 55, 242, 84, 234, 44, 105,
-    239, 41, 234, 43, 202, 194, 115, 239, 41, 234, 43, 202, 194, 234, 43, 3,
-    4, 105, 185, 93, 23, 105, 185, 60, 234, 36, 4, 232, 128, 185, 58, 219,
-    180, 4, 243, 11, 223, 117, 230, 204, 4, 243, 11, 223, 117, 219, 180, 4,
-    208, 13, 87, 58, 230, 204, 4, 208, 13, 87, 58, 219, 180, 211, 57, 202,
-    99, 234, 45, 159, 230, 204, 211, 57, 202, 99, 234, 45, 159, 219, 180,
-    211, 57, 202, 99, 234, 45, 119, 4, 75, 223, 117, 230, 204, 211, 57, 202,
-    99, 234, 45, 119, 4, 75, 223, 117, 219, 180, 211, 57, 202, 99, 234, 45,
-    119, 4, 75, 58, 230, 204, 211, 57, 202, 99, 234, 45, 119, 4, 75, 58, 219,
-    180, 211, 57, 202, 99, 234, 45, 119, 4, 75, 93, 183, 230, 204, 211, 57,
-    202, 99, 234, 45, 119, 4, 75, 93, 219, 224, 219, 180, 211, 57, 251, 41,
-    230, 204, 211, 57, 251, 41, 219, 180, 23, 202, 168, 213, 12, 234, 45,
-    159, 230, 204, 23, 202, 168, 213, 12, 234, 45, 159, 219, 180, 23, 213,
-    12, 251, 41, 230, 204, 23, 213, 12, 251, 41, 219, 180, 93, 235, 131, 234,
-    45, 93, 230, 203, 230, 204, 93, 235, 131, 234, 45, 93, 219, 179, 219,
-    180, 93, 202, 180, 211, 57, 234, 44, 230, 204, 93, 202, 180, 211, 57,
-    234, 44, 219, 180, 93, 202, 180, 93, 230, 203, 230, 204, 93, 202, 180,
-    93, 219, 179, 219, 180, 93, 230, 204, 93, 235, 131, 234, 44, 230, 204,
-    93, 219, 180, 93, 235, 131, 234, 44, 219, 180, 93, 202, 99, 234, 45, 93,
-    230, 204, 93, 202, 99, 234, 44, 230, 204, 93, 202, 99, 234, 45, 93, 219,
-    180, 93, 202, 99, 234, 44, 202, 99, 234, 45, 119, 211, 57, 219, 179, 202,
-    99, 234, 45, 119, 211, 57, 230, 203, 202, 99, 234, 45, 119, 211, 57, 219,
-    180, 4, 75, 223, 117, 202, 99, 234, 45, 119, 211, 57, 230, 204, 4, 75,
-    223, 117, 235, 131, 234, 45, 119, 211, 57, 219, 179, 235, 131, 234, 45,
-    119, 211, 57, 230, 203, 235, 131, 202, 99, 234, 45, 119, 211, 57, 219,
-    179, 235, 131, 202, 99, 234, 45, 119, 211, 57, 230, 203, 202, 180, 211,
-    57, 219, 179, 202, 180, 211, 57, 230, 203, 202, 180, 93, 219, 180, 93,
-    234, 43, 56, 202, 180, 93, 230, 204, 93, 234, 43, 56, 55, 214, 88, 219,
-    179, 55, 214, 88, 230, 203, 55, 214, 88, 219, 180, 4, 196, 103, 230, 204,
-    211, 1, 219, 179, 230, 204, 248, 216, 219, 179, 219, 180, 242, 219, 247,
-    205, 238, 164, 230, 204, 242, 219, 247, 205, 238, 164, 219, 180, 242,
-    219, 247, 205, 238, 165, 93, 202, 99, 234, 44, 230, 204, 242, 219, 247,
-    205, 238, 165, 93, 202, 99, 234, 44, 202, 69, 199, 38, 220, 11, 199, 38,
-    202, 69, 199, 39, 211, 57, 234, 45, 159, 220, 11, 199, 39, 211, 57, 234,
-    45, 159, 234, 43, 3, 4, 247, 241, 58, 208, 232, 93, 202, 168, 234, 43,
-    56, 200, 221, 93, 202, 168, 234, 43, 56, 208, 232, 93, 202, 168, 213, 12,
-    234, 45, 159, 200, 221, 93, 202, 168, 213, 12, 234, 45, 159, 208, 232,
-    93, 234, 43, 56, 200, 221, 93, 234, 43, 56, 208, 232, 93, 213, 12, 234,
-    45, 159, 200, 221, 93, 213, 12, 234, 45, 159, 208, 232, 93, 251, 165,
-    234, 45, 159, 200, 221, 93, 251, 165, 234, 45, 159, 208, 232, 93, 213,
-    12, 251, 165, 234, 45, 159, 200, 221, 93, 213, 12, 251, 165, 234, 45,
-    159, 55, 208, 231, 55, 200, 220, 200, 229, 4, 236, 140, 200, 181, 4, 236,
-    140, 200, 229, 4, 108, 3, 60, 200, 181, 4, 108, 3, 60, 200, 229, 4, 215,
-    127, 3, 60, 200, 181, 4, 215, 127, 3, 60, 200, 229, 79, 211, 57, 234, 45,
-    119, 4, 75, 58, 200, 181, 79, 211, 57, 234, 45, 119, 4, 75, 58, 200, 229,
-    79, 93, 234, 43, 56, 200, 181, 79, 93, 234, 43, 56, 200, 229, 79, 93,
-    198, 153, 211, 66, 200, 181, 79, 93, 198, 153, 211, 66, 200, 229, 79, 93,
-    251, 165, 234, 45, 159, 200, 181, 79, 93, 251, 165, 234, 45, 159, 200,
-    229, 79, 93, 213, 12, 234, 45, 159, 200, 181, 79, 93, 213, 12, 234, 45,
-    159, 51, 45, 211, 77, 111, 211, 66, 51, 50, 211, 77, 111, 211, 66, 242,
-    219, 200, 228, 242, 219, 200, 180, 242, 219, 200, 229, 211, 57, 234, 45,
-    159, 242, 219, 200, 181, 211, 57, 234, 45, 159, 200, 229, 93, 200, 180,
-    200, 181, 93, 200, 228, 200, 229, 93, 200, 228, 200, 181, 93, 200, 180,
-    200, 181, 248, 216, 200, 228, 200, 181, 248, 216, 23, 222, 198, 247, 205,
-    237, 216, 4, 200, 228, 234, 132, 79, 211, 69, 235, 118, 209, 116, 4, 199,
-    122, 198, 53, 198, 7, 223, 99, 232, 147, 213, 27, 203, 40, 45, 199, 228,
-    203, 40, 144, 199, 228, 203, 40, 133, 199, 228, 209, 255, 4, 206, 8, 81,
-    249, 88, 197, 225, 50, 197, 57, 55, 81, 249, 88, 45, 197, 57, 81, 249,
-    88, 55, 45, 197, 57, 55, 81, 249, 88, 55, 45, 197, 57, 179, 237, 216,
-    232, 98, 45, 216, 191, 79, 55, 195, 135, 203, 40, 144, 199, 229, 4, 211,
-    6, 203, 40, 133, 199, 229, 4, 196, 103, 203, 40, 133, 199, 229, 93, 203,
-    40, 144, 199, 228, 55, 144, 199, 228, 55, 133, 199, 228, 55, 201, 28,
-    213, 12, 56, 207, 18, 55, 201, 28, 213, 12, 56, 236, 164, 213, 12, 236,
-    208, 4, 207, 18, 214, 107, 202, 97, 81, 219, 113, 4, 243, 11, 58, 81,
-    219, 113, 4, 243, 11, 60, 144, 199, 229, 4, 243, 11, 60, 210, 119, 4,
-    228, 241, 106, 210, 119, 4, 198, 153, 211, 66, 197, 225, 81, 249, 88,
-    248, 168, 207, 65, 197, 225, 81, 249, 88, 4, 228, 241, 106, 197, 225,
-    242, 84, 211, 66, 197, 225, 214, 88, 219, 179, 197, 225, 214, 88, 230,
-    203, 235, 131, 202, 99, 219, 180, 211, 57, 234, 45, 159, 235, 131, 202,
-    99, 230, 204, 211, 57, 234, 45, 159, 197, 225, 202, 24, 248, 168, 207,
-    65, 220, 13, 197, 225, 81, 249, 88, 211, 66, 55, 202, 24, 211, 66, 63,
-    81, 164, 215, 60, 63, 81, 164, 186, 234, 204, 63, 57, 186, 193, 105, 63,
-    57, 202, 2, 234, 204, 63, 57, 202, 2, 193, 105, 63, 57, 45, 50, 63, 57,
-    118, 62, 57, 196, 66, 62, 57, 235, 119, 62, 57, 186, 234, 204, 62, 57,
-    186, 193, 105, 62, 57, 202, 2, 234, 204, 62, 57, 202, 2, 193, 105, 62,
-    57, 45, 50, 62, 57, 133, 144, 62, 57, 96, 64, 4, 198, 136, 235, 118, 96,
-    64, 4, 198, 136, 196, 65, 118, 64, 4, 198, 136, 235, 118, 118, 64, 4,
-    198, 136, 196, 65, 51, 4, 198, 54, 132, 248, 139, 51, 4, 248, 77, 132,
-    248, 139, 51, 4, 116, 50, 237, 39, 132, 248, 139, 51, 4, 110, 45, 237,
-    39, 132, 248, 139, 237, 33, 4, 45, 132, 248, 139, 237, 33, 4, 50, 132,
-    248, 139, 237, 33, 4, 198, 54, 132, 248, 139, 237, 33, 4, 248, 77, 132,
-    248, 139, 235, 138, 201, 190, 62, 220, 13, 201, 190, 63, 220, 13, 201,
-    190, 62, 195, 83, 2, 201, 190, 63, 195, 83, 2, 201, 190, 62, 210, 24, 63,
-    210, 24, 63, 229, 182, 62, 229, 182, 228, 241, 62, 229, 182, 62, 220, 13,
-    243, 10, 62, 216, 213, 237, 32, 63, 216, 213, 237, 32, 62, 216, 213, 218,
-    232, 63, 216, 213, 218, 232, 62, 2, 237, 32, 62, 2, 218, 232, 63, 2, 218,
-    232, 62, 228, 241, 234, 121, 63, 228, 241, 234, 121, 62, 81, 234, 121,
-    63, 81, 234, 121, 45, 64, 4, 2, 243, 10, 115, 118, 250, 231, 45, 64, 4,
-    47, 209, 81, 179, 118, 201, 183, 57, 118, 197, 13, 64, 4, 81, 106, 118,
-    197, 13, 64, 4, 55, 81, 106, 118, 197, 13, 64, 232, 98, 164, 118, 197,
-    13, 197, 225, 237, 216, 57, 118, 64, 4, 235, 138, 201, 80, 118, 64, 4,
-    199, 216, 4, 81, 106, 118, 64, 4, 199, 216, 4, 55, 81, 106, 118, 197, 13,
-    64, 4, 199, 215, 118, 197, 13, 64, 4, 199, 216, 4, 81, 106, 118, 197, 13,
-    64, 4, 199, 216, 4, 55, 81, 106, 118, 64, 198, 216, 192, 235, 193, 139,
-    64, 209, 58, 236, 231, 219, 224, 234, 43, 3, 93, 118, 57, 207, 19, 198,
-    153, 211, 67, 93, 118, 57, 118, 64, 93, 207, 19, 251, 165, 234, 45, 159,
-    96, 64, 198, 216, 230, 203, 96, 64, 198, 216, 200, 180, 118, 208, 26, 57,
-    96, 208, 26, 57, 207, 19, 198, 153, 211, 67, 93, 96, 57, 96, 64, 93, 207,
-    19, 251, 165, 234, 45, 159, 198, 153, 211, 67, 93, 118, 57, 118, 64, 93,
-    251, 165, 234, 45, 159, 118, 64, 93, 207, 19, 198, 153, 211, 66, 96, 64,
-    93, 207, 19, 198, 153, 211, 66, 235, 119, 197, 240, 191, 21, 57, 203, 40,
-    202, 99, 186, 57, 203, 40, 249, 143, 202, 2, 57, 63, 216, 213, 201, 102,
-    62, 2, 201, 102, 63, 2, 201, 102, 62, 206, 203, 210, 24, 63, 206, 203,
-    210, 24, 88, 220, 13, 243, 10, 88, 211, 8, 4, 211, 8, 223, 117, 88, 243,
-    11, 4, 243, 11, 223, 117, 88, 243, 10, 88, 47, 205, 154, 202, 99, 186,
-    64, 4, 228, 250, 229, 235, 249, 143, 202, 2, 64, 4, 228, 250, 199, 215,
-    202, 99, 186, 64, 4, 228, 241, 199, 215, 249, 143, 202, 2, 64, 4, 228,
-    241, 199, 215, 248, 224, 64, 209, 58, 235, 119, 199, 25, 186, 234, 203,
-    203, 40, 248, 224, 64, 209, 58, 235, 119, 199, 25, 186, 234, 203, 118,
-    197, 240, 57, 196, 66, 197, 240, 57, 96, 197, 240, 57, 235, 119, 197,
-    240, 57, 45, 50, 197, 240, 57, 133, 144, 197, 240, 57, 186, 193, 105,
-    197, 240, 57, 186, 234, 204, 197, 240, 57, 202, 2, 234, 204, 197, 240,
-    57, 202, 2, 193, 105, 197, 240, 57, 118, 197, 240, 237, 214, 57, 196, 66,
-    197, 240, 237, 214, 57, 96, 197, 240, 237, 214, 57, 235, 119, 197, 240,
-    237, 214, 57, 242, 221, 197, 240, 211, 77, 243, 11, 57, 251, 85, 197,
-    240, 211, 77, 243, 11, 57, 118, 197, 240, 64, 119, 164, 196, 66, 197,
-    240, 64, 119, 164, 96, 197, 240, 64, 119, 164, 235, 119, 197, 240, 64,
-    119, 164, 186, 193, 105, 197, 240, 64, 119, 164, 186, 234, 204, 197, 240,
-    64, 119, 164, 202, 2, 234, 204, 197, 240, 64, 119, 164, 202, 2, 193, 105,
-    197, 240, 64, 119, 164, 118, 197, 240, 64, 4, 55, 228, 241, 106, 196, 66,
-    197, 240, 64, 4, 55, 228, 241, 106, 96, 197, 240, 64, 4, 55, 228, 241,
-    106, 235, 119, 197, 240, 64, 4, 55, 228, 241, 106, 228, 241, 199, 237,
-    221, 222, 81, 199, 237, 221, 222, 118, 197, 240, 64, 139, 96, 197, 240,
-    57, 196, 66, 197, 240, 64, 118, 79, 235, 119, 197, 240, 57, 96, 197, 240,
-    64, 139, 118, 197, 240, 57, 235, 119, 197, 240, 64, 118, 79, 196, 66,
-    197, 240, 57, 118, 197, 240, 210, 196, 250, 231, 196, 66, 197, 240, 210,
-    196, 250, 231, 96, 197, 240, 210, 196, 250, 231, 235, 119, 197, 240, 210,
-    196, 250, 231, 118, 62, 47, 63, 57, 196, 66, 62, 47, 63, 57, 96, 62, 47,
-    63, 57, 235, 119, 62, 47, 63, 57, 251, 85, 197, 240, 50, 196, 221, 57,
-    251, 85, 197, 240, 248, 77, 196, 221, 57, 251, 85, 197, 240, 45, 196,
-    221, 57, 251, 85, 197, 240, 198, 54, 196, 221, 57, 207, 23, 219, 224,
-    207, 23, 183, 214, 77, 219, 224, 214, 77, 183, 232, 128, 239, 2, 250,
-    232, 243, 6, 251, 84, 96, 62, 57, 16, 40, 196, 255, 42, 234, 133, 198,
-    225, 198, 52, 118, 234, 37, 250, 235, 198, 225, 206, 204, 196, 66, 234,
-    37, 250, 235, 198, 225, 198, 52, 96, 234, 37, 250, 235, 198, 225, 219,
-    220, 235, 119, 234, 37, 250, 235, 62, 118, 234, 37, 250, 235, 62, 196,
-    66, 234, 37, 250, 235, 62, 96, 234, 37, 250, 235, 62, 235, 119, 234, 37,
-    250, 235, 235, 119, 197, 240, 64, 4, 179, 198, 136, 219, 214, 235, 119,
-    197, 240, 64, 4, 179, 198, 136, 206, 197, 196, 66, 197, 240, 64, 4, 179,
-    198, 136, 219, 214, 196, 66, 197, 240, 64, 4, 179, 198, 136, 206, 197,
-    118, 197, 240, 64, 4, 179, 198, 136, 196, 65, 96, 197, 240, 64, 4, 179,
-    198, 136, 196, 65, 118, 197, 240, 64, 4, 179, 198, 136, 235, 118, 96,
-    197, 240, 64, 4, 179, 198, 136, 235, 118, 62, 238, 163, 235, 119, 23,
-    118, 57, 62, 238, 163, 235, 119, 23, 96, 57, 62, 238, 163, 196, 66, 23,
-    118, 57, 62, 238, 163, 196, 66, 23, 96, 57, 62, 238, 163, 118, 23, 196,
-    66, 57, 62, 238, 163, 96, 23, 196, 66, 57, 62, 238, 163, 118, 23, 235,
-    119, 57, 62, 238, 163, 96, 23, 235, 119, 57, 206, 248, 64, 144, 219, 224,
-    206, 248, 64, 144, 183, 206, 248, 64, 133, 219, 224, 206, 248, 64, 133,
-    183, 206, 248, 64, 45, 196, 77, 206, 248, 64, 50, 196, 77, 206, 248, 64,
-    45, 235, 123, 206, 248, 64, 50, 235, 123, 196, 66, 63, 64, 232, 98, 249,
-    88, 4, 228, 241, 164, 133, 250, 236, 223, 163, 42, 207, 93, 248, 62, 211,
-    1, 63, 201, 188, 211, 1, 63, 23, 62, 201, 188, 211, 1, 62, 201, 188, 249,
-    107, 111, 4, 156, 192, 235, 47, 192, 235, 47, 28, 192, 235, 62, 51, 247,
-    19, 62, 237, 33, 247, 19, 153, 62, 210, 24, 228, 241, 62, 211, 160, 62,
-    211, 160, 62, 216, 213, 196, 76, 197, 242, 247, 19, 62, 216, 213, 235,
-    122, 197, 242, 247, 19, 62, 216, 213, 219, 219, 197, 242, 247, 19, 62,
-    216, 213, 206, 203, 197, 242, 247, 19, 214, 95, 232, 146, 109, 198, 54,
-    132, 62, 243, 10, 248, 77, 132, 62, 243, 10, 156, 232, 128, 209, 60, 62,
-    238, 159, 206, 122, 156, 232, 128, 209, 60, 62, 238, 159, 63, 232, 128,
-    209, 60, 238, 159, 206, 122, 63, 232, 128, 209, 60, 238, 159, 51, 209,
-    25, 223, 144, 196, 107, 56, 230, 187, 77, 209, 78, 232, 146, 109, 209,
-    78, 232, 146, 138, 209, 78, 232, 146, 134, 209, 78, 232, 146, 149, 198,
-    9, 208, 185, 250, 189, 228, 91, 209, 196, 214, 91, 63, 215, 206, 204, 33,
-    62, 237, 33, 211, 105, 238, 217, 197, 202, 156, 215, 206, 250, 227, 238,
-    179, 230, 88, 191, 75, 221, 2, 251, 53, 252, 32, 193, 247, 209, 26, 45,
-    132, 62, 201, 102, 50, 132, 62, 201, 102, 201, 103, 4, 45, 132, 248, 139,
-    201, 103, 4, 50, 132, 248, 139, 118, 197, 13, 64, 4, 197, 242, 250, 233,
-    196, 66, 197, 13, 64, 4, 197, 242, 250, 233, 96, 197, 13, 64, 4, 197,
-    242, 250, 233, 235, 119, 197, 13, 64, 4, 197, 242, 250, 233, 234, 27,
-    232, 146, 107, 234, 27, 232, 146, 109, 205, 51, 206, 31, 250, 188, 16,
-    195, 52, 206, 31, 250, 188, 16, 212, 254, 206, 31, 250, 188, 16, 208, 1,
-    206, 31, 250, 188, 16, 248, 163, 206, 31, 250, 188, 16, 204, 16, 206, 31,
-    250, 188, 16, 198, 0, 234, 43, 3, 4, 223, 140, 60, 196, 89, 113, 204, 12,
-    113, 235, 128, 113, 210, 96, 113, 207, 18, 50, 251, 115, 229, 203, 210,
-    78, 113, 135, 6, 1, 250, 122, 135, 6, 1, 247, 252, 135, 6, 1, 195, 151,
-    135, 6, 1, 231, 18, 135, 6, 1, 236, 169, 135, 6, 1, 192, 49, 135, 6, 1,
-    191, 55, 135, 6, 1, 235, 30, 135, 6, 1, 191, 82, 135, 6, 1, 223, 39, 135,
-    6, 1, 89, 223, 39, 135, 6, 1, 68, 135, 6, 1, 236, 190, 135, 6, 1, 222,
-    94, 135, 6, 1, 219, 75, 135, 6, 1, 215, 66, 135, 6, 1, 214, 210, 135, 6,
-    1, 211, 89, 135, 6, 1, 209, 55, 135, 6, 1, 206, 179, 135, 6, 1, 202, 77,
-    135, 6, 1, 197, 44, 135, 6, 1, 196, 124, 135, 6, 1, 232, 101, 135, 6, 1,
-    229, 188, 135, 6, 1, 211, 20, 135, 6, 1, 210, 63, 135, 6, 1, 203, 8, 135,
-    6, 1, 197, 146, 135, 6, 1, 243, 54, 135, 6, 1, 203, 165, 135, 6, 1, 192,
-    58, 135, 6, 1, 192, 60, 135, 6, 1, 192, 93, 135, 6, 1, 201, 220, 140,
-    135, 6, 1, 191, 225, 135, 6, 1, 2, 191, 190, 135, 6, 1, 2, 191, 191, 4,
-    199, 215, 135, 6, 1, 192, 12, 135, 6, 1, 223, 82, 2, 191, 190, 135, 6, 1,
-    248, 175, 191, 190, 135, 6, 1, 223, 82, 248, 175, 191, 190, 135, 6, 1,
-    232, 228, 135, 6, 1, 223, 37, 135, 6, 1, 203, 7, 135, 6, 1, 197, 215, 65,
-    135, 6, 1, 220, 1, 215, 66, 135, 6, 1, 247, 73, 243, 54, 135, 2, 1, 250,
-    122, 135, 2, 1, 247, 252, 135, 2, 1, 195, 151, 135, 2, 1, 231, 18, 135,
-    2, 1, 236, 169, 135, 2, 1, 192, 49, 135, 2, 1, 191, 55, 135, 2, 1, 235,
-    30, 135, 2, 1, 191, 82, 135, 2, 1, 223, 39, 135, 2, 1, 89, 223, 39, 135,
-    2, 1, 68, 135, 2, 1, 236, 190, 135, 2, 1, 222, 94, 135, 2, 1, 219, 75,
-    135, 2, 1, 215, 66, 135, 2, 1, 214, 210, 135, 2, 1, 211, 89, 135, 2, 1,
-    209, 55, 135, 2, 1, 206, 179, 135, 2, 1, 202, 77, 135, 2, 1, 197, 44,
-    135, 2, 1, 196, 124, 135, 2, 1, 232, 101, 135, 2, 1, 229, 188, 135, 2, 1,
-    211, 20, 135, 2, 1, 210, 63, 135, 2, 1, 203, 8, 135, 2, 1, 197, 146, 135,
-    2, 1, 243, 54, 135, 2, 1, 203, 165, 135, 2, 1, 192, 58, 135, 2, 1, 192,
-    60, 135, 2, 1, 192, 93, 135, 2, 1, 201, 220, 140, 135, 2, 1, 191, 225,
-    135, 2, 1, 2, 191, 190, 135, 2, 1, 2, 191, 191, 4, 199, 215, 135, 2, 1,
-    192, 12, 135, 2, 1, 223, 82, 2, 191, 190, 135, 2, 1, 248, 175, 191, 190,
-    135, 2, 1, 223, 82, 248, 175, 191, 190, 135, 2, 1, 232, 228, 135, 2, 1,
-    223, 37, 135, 2, 1, 203, 7, 135, 2, 1, 197, 215, 65, 135, 2, 1, 220, 1,
-    215, 66, 135, 2, 1, 247, 73, 243, 54, 8, 6, 1, 220, 143, 4, 55, 164, 8,
-    2, 1, 220, 143, 4, 55, 164, 8, 6, 1, 220, 143, 4, 82, 198, 152, 8, 6, 1,
-    210, 237, 4, 106, 8, 6, 1, 207, 222, 4, 199, 215, 8, 2, 1, 42, 4, 106, 8,
-    2, 1, 200, 44, 4, 237, 39, 106, 8, 6, 1, 230, 117, 4, 237, 87, 8, 2, 1,
-    230, 117, 4, 237, 87, 8, 6, 1, 222, 153, 4, 237, 87, 8, 2, 1, 222, 153,
-    4, 237, 87, 8, 6, 1, 191, 167, 4, 237, 87, 8, 2, 1, 191, 167, 4, 237, 87,
-    8, 6, 1, 251, 160, 8, 6, 1, 218, 169, 4, 102, 8, 6, 1, 153, 65, 8, 6, 1,
-    153, 251, 160, 8, 2, 1, 196, 13, 4, 50, 102, 8, 6, 1, 193, 225, 4, 102,
-    8, 2, 1, 193, 225, 4, 102, 8, 2, 1, 196, 13, 4, 238, 175, 8, 6, 1, 132,
-    230, 116, 8, 2, 1, 132, 230, 116, 8, 2, 1, 199, 213, 209, 211, 8, 2, 1,
-    235, 15, 4, 213, 9, 8, 2, 1, 153, 207, 222, 4, 199, 215, 8, 2, 1, 187, 4,
-    130, 206, 189, 223, 117, 8, 1, 2, 6, 153, 71, 8, 200, 230, 2, 1, 223, 35,
-    52, 1, 6, 196, 12, 8, 6, 1, 206, 9, 4, 200, 146, 199, 215, 8, 6, 1, 191,
-    167, 4, 200, 146, 199, 215, 94, 6, 1, 251, 186, 94, 2, 1, 251, 186, 94,
-    6, 1, 195, 66, 94, 2, 1, 195, 66, 94, 6, 1, 231, 211, 94, 2, 1, 231, 211,
-    94, 6, 1, 237, 255, 94, 2, 1, 237, 255, 94, 6, 1, 234, 165, 94, 2, 1,
-    234, 165, 94, 6, 1, 202, 7, 94, 2, 1, 202, 7, 94, 6, 1, 191, 95, 94, 2,
-    1, 191, 95, 94, 6, 1, 230, 6, 94, 2, 1, 230, 6, 94, 6, 1, 199, 13, 94, 2,
-    1, 199, 13, 94, 6, 1, 228, 32, 94, 2, 1, 228, 32, 94, 6, 1, 222, 77, 94,
-    2, 1, 222, 77, 94, 6, 1, 219, 252, 94, 2, 1, 219, 252, 94, 6, 1, 216,
-    100, 94, 2, 1, 216, 100, 94, 6, 1, 213, 219, 94, 2, 1, 213, 219, 94, 6,
-    1, 220, 248, 94, 2, 1, 220, 248, 94, 6, 1, 74, 94, 2, 1, 74, 94, 6, 1,
-    209, 185, 94, 2, 1, 209, 185, 94, 6, 1, 206, 162, 94, 2, 1, 206, 162, 94,
-    6, 1, 202, 183, 94, 2, 1, 202, 183, 94, 6, 1, 199, 166, 94, 2, 1, 199,
-    166, 94, 6, 1, 196, 168, 94, 2, 1, 196, 168, 94, 6, 1, 233, 23, 94, 2, 1,
-    233, 23, 94, 6, 1, 221, 190, 94, 2, 1, 221, 190, 94, 6, 1, 208, 176, 94,
-    2, 1, 208, 176, 94, 6, 1, 211, 81, 94, 2, 1, 211, 81, 94, 6, 1, 237, 37,
-    251, 192, 94, 2, 1, 237, 37, 251, 192, 94, 6, 1, 39, 94, 251, 230, 94, 2,
-    1, 39, 94, 251, 230, 94, 6, 1, 238, 198, 234, 165, 94, 2, 1, 238, 198,
-    234, 165, 94, 6, 1, 237, 37, 222, 77, 94, 2, 1, 237, 37, 222, 77, 94, 6,
-    1, 237, 37, 213, 219, 94, 2, 1, 237, 37, 213, 219, 94, 6, 1, 238, 198,
-    213, 219, 94, 2, 1, 238, 198, 213, 219, 94, 6, 1, 39, 94, 211, 81, 94, 2,
-    1, 39, 94, 211, 81, 94, 6, 1, 205, 145, 94, 2, 1, 205, 145, 94, 6, 1,
-    238, 214, 203, 105, 94, 2, 1, 238, 214, 203, 105, 94, 6, 1, 39, 94, 203,
-    105, 94, 2, 1, 39, 94, 203, 105, 94, 6, 1, 39, 94, 234, 12, 94, 2, 1, 39,
-    94, 234, 12, 94, 6, 1, 251, 212, 221, 195, 94, 2, 1, 251, 212, 221, 195,
-    94, 6, 1, 237, 37, 228, 242, 94, 2, 1, 237, 37, 228, 242, 94, 6, 1, 39,
-    94, 228, 242, 94, 2, 1, 39, 94, 228, 242, 94, 6, 1, 39, 94, 140, 94, 2,
-    1, 39, 94, 140, 94, 6, 1, 220, 142, 140, 94, 2, 1, 220, 142, 140, 94, 6,
-    1, 39, 94, 229, 209, 94, 2, 1, 39, 94, 229, 209, 94, 6, 1, 39, 94, 230,
-    9, 94, 2, 1, 39, 94, 230, 9, 94, 6, 1, 39, 94, 231, 206, 94, 2, 1, 39,
-    94, 231, 206, 94, 6, 1, 39, 94, 236, 193, 94, 2, 1, 39, 94, 236, 193, 94,
-    6, 1, 39, 94, 203, 71, 94, 2, 1, 39, 94, 203, 71, 94, 6, 1, 39, 212, 145,
-    203, 71, 94, 2, 1, 39, 212, 145, 203, 71, 94, 6, 1, 39, 212, 145, 214,
-    16, 94, 2, 1, 39, 212, 145, 214, 16, 94, 6, 1, 39, 212, 145, 212, 81, 94,
-    2, 1, 39, 212, 145, 212, 81, 94, 6, 1, 39, 212, 145, 193, 140, 94, 2, 1,
-    39, 212, 145, 193, 140, 94, 16, 222, 102, 94, 16, 216, 101, 206, 162, 94,
-    16, 209, 186, 206, 162, 94, 16, 201, 89, 94, 16, 199, 167, 206, 162, 94,
-    16, 221, 191, 206, 162, 94, 16, 203, 72, 202, 183, 94, 6, 1, 238, 198,
-    203, 105, 94, 2, 1, 238, 198, 203, 105, 94, 6, 1, 238, 198, 231, 206, 94,
-    2, 1, 238, 198, 231, 206, 94, 33, 213, 220, 58, 94, 33, 201, 213, 250,
-    201, 94, 33, 201, 213, 219, 188, 94, 6, 1, 248, 103, 221, 195, 94, 2, 1,
-    248, 103, 221, 195, 94, 39, 212, 145, 232, 80, 201, 63, 94, 39, 212, 145,
-    236, 234, 208, 13, 77, 94, 39, 212, 145, 223, 142, 208, 13, 77, 94, 39,
-    212, 145, 195, 137, 236, 205, 94, 232, 118, 91, 230, 70, 94, 232, 80,
-    201, 63, 94, 215, 200, 236, 205, 101, 2, 1, 251, 132, 101, 2, 1, 249,
-    101, 101, 2, 1, 231, 210, 101, 2, 1, 236, 150, 101, 2, 1, 234, 103, 101,
-    2, 1, 195, 49, 101, 2, 1, 191, 80, 101, 2, 1, 199, 193, 101, 2, 1, 223,
-    162, 101, 2, 1, 222, 87, 101, 2, 1, 220, 7, 101, 2, 1, 217, 90, 101, 2,
-    1, 214, 216, 101, 2, 1, 211, 104, 101, 2, 1, 210, 131, 101, 2, 1, 191,
-    67, 101, 2, 1, 207, 163, 101, 2, 1, 205, 142, 101, 2, 1, 199, 179, 101,
-    2, 1, 196, 113, 101, 2, 1, 209, 220, 101, 2, 1, 221, 200, 101, 2, 1, 231,
-    82, 101, 2, 1, 208, 81, 101, 2, 1, 203, 69, 101, 2, 1, 243, 81, 101, 2,
-    1, 247, 128, 101, 2, 1, 222, 234, 101, 2, 1, 243, 18, 101, 2, 1, 246,
-    241, 101, 2, 1, 192, 218, 101, 2, 1, 222, 249, 101, 2, 1, 230, 87, 101,
-    2, 1, 229, 245, 101, 2, 1, 229, 145, 101, 2, 1, 193, 125, 101, 2, 1, 230,
-    19, 101, 2, 1, 229, 11, 101, 2, 1, 192, 14, 101, 2, 1, 252, 14, 198, 175,
-    1, 170, 198, 175, 1, 192, 136, 198, 175, 1, 192, 135, 198, 175, 1, 192,
-    125, 198, 175, 1, 192, 123, 198, 175, 1, 248, 218, 252, 62, 192, 118,
-    198, 175, 1, 192, 118, 198, 175, 1, 192, 133, 198, 175, 1, 192, 130, 198,
-    175, 1, 192, 132, 198, 175, 1, 192, 131, 198, 175, 1, 192, 40, 198, 175,
-    1, 192, 127, 198, 175, 1, 192, 116, 198, 175, 1, 197, 86, 192, 116, 198,
-    175, 1, 192, 113, 198, 175, 1, 192, 121, 198, 175, 1, 248, 218, 252, 62,
-    192, 121, 198, 175, 1, 197, 86, 192, 121, 198, 175, 1, 192, 120, 198,
-    175, 1, 192, 140, 198, 175, 1, 192, 114, 198, 175, 1, 197, 86, 192, 114,
-    198, 175, 1, 192, 103, 198, 175, 1, 197, 86, 192, 103, 198, 175, 1, 192,
-    33, 198, 175, 1, 192, 82, 198, 175, 1, 251, 243, 192, 82, 198, 175, 1,
-    197, 86, 192, 82, 198, 175, 1, 192, 112, 198, 175, 1, 192, 111, 198, 175,
-    1, 192, 108, 198, 175, 1, 197, 86, 192, 122, 198, 175, 1, 197, 86, 192,
-    106, 198, 175, 1, 192, 104, 198, 175, 1, 191, 225, 198, 175, 1, 192, 101,
-    198, 175, 1, 192, 99, 198, 175, 1, 192, 124, 198, 175, 1, 197, 86, 192,
-    124, 198, 175, 1, 250, 127, 192, 124, 198, 175, 1, 192, 98, 198, 175, 1,
-    192, 96, 198, 175, 1, 192, 97, 198, 175, 1, 192, 95, 198, 175, 1, 192,
-    94, 198, 175, 1, 192, 134, 198, 175, 1, 192, 92, 198, 175, 1, 192, 90,
-    198, 175, 1, 192, 89, 198, 175, 1, 192, 86, 198, 175, 1, 192, 83, 198,
-    175, 1, 199, 157, 192, 83, 198, 175, 1, 192, 81, 198, 175, 1, 192, 80,
-    198, 175, 1, 192, 12, 198, 175, 52, 1, 220, 115, 77, 198, 175, 204, 11,
-    77, 198, 175, 120, 222, 196, 36, 5, 219, 42, 36, 5, 216, 5, 36, 5, 206,
-    154, 36, 5, 202, 38, 36, 5, 203, 55, 36, 5, 248, 110, 36, 5, 198, 91, 36,
-    5, 242, 98, 36, 5, 213, 36, 36, 5, 212, 64, 36, 5, 231, 11, 211, 182, 36,
-    5, 191, 6, 36, 5, 236, 172, 36, 5, 237, 160, 36, 5, 222, 200, 36, 5, 198,
-    240, 36, 5, 243, 67, 36, 5, 209, 198, 36, 5, 209, 72, 36, 5, 231, 97, 36,
-    5, 231, 93, 36, 5, 231, 94, 36, 5, 231, 95, 36, 5, 201, 175, 36, 5, 201,
-    129, 36, 5, 201, 142, 36, 5, 201, 174, 36, 5, 201, 147, 36, 5, 201, 148,
-    36, 5, 201, 134, 36, 5, 247, 65, 36, 5, 247, 44, 36, 5, 247, 46, 36, 5,
-    247, 64, 36, 5, 247, 62, 36, 5, 247, 63, 36, 5, 247, 45, 36, 5, 190, 224,
-    36, 5, 190, 202, 36, 5, 190, 215, 36, 5, 190, 223, 36, 5, 190, 218, 36,
-    5, 190, 219, 36, 5, 190, 207, 36, 5, 247, 60, 36, 5, 247, 47, 36, 5, 247,
-    49, 36, 5, 247, 59, 36, 5, 247, 57, 36, 5, 247, 58, 36, 5, 247, 48, 36,
-    5, 207, 234, 36, 5, 207, 224, 36, 5, 207, 230, 36, 5, 207, 233, 36, 5,
-    207, 231, 36, 5, 207, 232, 36, 5, 207, 229, 36, 5, 220, 153, 36, 5, 220,
-    145, 36, 5, 220, 148, 36, 5, 220, 152, 36, 5, 220, 149, 36, 5, 220, 150,
-    36, 5, 220, 146, 36, 5, 192, 175, 36, 5, 192, 162, 36, 5, 192, 170, 36,
-    5, 192, 174, 36, 5, 192, 172, 36, 5, 192, 173, 36, 5, 192, 169, 36, 5,
-    230, 128, 36, 5, 230, 118, 36, 5, 230, 121, 36, 5, 230, 127, 36, 5, 230,
-    123, 36, 5, 230, 124, 36, 5, 230, 120, 33, 38, 1, 249, 17, 33, 38, 1,
-    195, 153, 33, 38, 1, 231, 77, 33, 38, 1, 237, 146, 33, 38, 1, 191, 62,
-    33, 38, 1, 191, 87, 33, 38, 1, 155, 33, 38, 1, 234, 140, 33, 38, 1, 234,
-    114, 33, 38, 1, 234, 103, 33, 38, 1, 74, 33, 38, 1, 210, 63, 33, 38, 1,
-    234, 34, 33, 38, 1, 234, 22, 33, 38, 1, 199, 145, 33, 38, 1, 140, 33, 38,
-    1, 197, 161, 33, 38, 1, 243, 127, 33, 38, 1, 203, 165, 33, 38, 1, 203,
-    116, 33, 38, 1, 232, 228, 33, 38, 1, 234, 18, 33, 38, 1, 65, 33, 38, 1,
-    223, 226, 33, 38, 1, 236, 191, 33, 38, 1, 215, 219, 196, 128, 33, 38, 1,
-    192, 95, 33, 38, 1, 191, 225, 33, 38, 1, 223, 81, 65, 33, 38, 1, 219, 83,
-    191, 190, 33, 38, 1, 248, 175, 191, 190, 33, 38, 1, 223, 81, 248, 175,
-    191, 190, 50, 251, 116, 200, 225, 217, 51, 50, 251, 116, 235, 138, 200,
-    225, 217, 51, 45, 200, 225, 248, 53, 50, 200, 225, 248, 53, 45, 235, 138,
-    200, 225, 248, 53, 50, 235, 138, 200, 225, 248, 53, 207, 147, 223, 104,
-    217, 51, 207, 147, 235, 138, 223, 104, 217, 51, 235, 138, 198, 8, 217,
-    51, 45, 198, 8, 248, 53, 50, 198, 8, 248, 53, 207, 147, 201, 190, 45,
-    207, 147, 211, 106, 248, 53, 50, 207, 147, 211, 106, 248, 53, 234, 189,
-    238, 254, 210, 126, 232, 148, 210, 126, 207, 18, 232, 148, 210, 126, 228,
-    85, 235, 138, 211, 177, 235, 119, 251, 126, 196, 66, 251, 126, 235, 138,
-    206, 203, 251, 115, 55, 211, 172, 228, 88, 223, 93, 223, 102, 210, 183,
-    248, 47, 228, 89, 4, 237, 42, 198, 153, 4, 206, 189, 58, 45, 130, 210,
-    116, 248, 53, 50, 130, 210, 116, 248, 53, 198, 153, 4, 75, 58, 198, 153,
-    4, 75, 60, 45, 81, 249, 88, 4, 208, 7, 50, 81, 249, 88, 4, 208, 7, 198,
-    54, 45, 132, 248, 53, 198, 54, 50, 132, 248, 53, 248, 77, 45, 132, 248,
-    53, 248, 77, 50, 132, 248, 53, 45, 202, 206, 126, 248, 53, 50, 202, 206,
-    126, 248, 53, 45, 55, 210, 113, 50, 55, 210, 113, 105, 185, 139, 91, 75,
-    208, 151, 91, 75, 139, 105, 185, 208, 151, 112, 232, 128, 75, 208, 151,
-    232, 226, 75, 77, 207, 18, 208, 13, 77, 81, 198, 152, 206, 189, 209, 61,
-    193, 23, 204, 11, 82, 236, 140, 153, 242, 74, 207, 147, 236, 140, 207,
-    147, 242, 74, 153, 204, 25, 238, 15, 4, 45, 230, 173, 238, 15, 4, 50,
-    230, 173, 153, 238, 14, 198, 54, 132, 205, 54, 56, 197, 14, 237, 215,
-    198, 223, 237, 215, 201, 79, 232, 80, 201, 63, 81, 202, 136, 236, 138,
-    193, 72, 81, 219, 112, 247, 109, 55, 228, 88, 207, 18, 242, 74, 55, 218,
-    237, 207, 252, 77, 237, 216, 4, 45, 196, 69, 55, 200, 164, 77, 223, 93,
-    130, 222, 35, 223, 93, 130, 222, 36, 4, 222, 36, 58, 130, 222, 35, 130,
-    222, 36, 4, 236, 140, 55, 201, 114, 242, 74, 235, 138, 202, 23, 197, 225,
-    238, 14, 216, 214, 242, 74, 210, 125, 77, 208, 150, 234, 129, 77, 238,
-    255, 195, 137, 236, 205, 238, 218, 210, 82, 4, 50, 238, 216, 238, 218,
-    210, 82, 4, 45, 238, 216, 198, 128, 3, 6, 233, 255, 216, 214, 233, 216,
-    77, 216, 214, 208, 13, 77, 45, 51, 248, 54, 4, 106, 50, 51, 248, 54, 4,
-    106, 45, 51, 248, 54, 4, 55, 106, 50, 51, 248, 54, 4, 55, 106, 198, 54,
-    132, 45, 210, 113, 198, 54, 132, 50, 210, 113, 248, 77, 132, 45, 210,
-    113, 248, 77, 132, 50, 210, 113, 211, 172, 228, 88, 12, 48, 207, 48, 12,
-    48, 242, 230, 12, 48, 205, 57, 107, 12, 48, 205, 57, 109, 12, 48, 205,
-    57, 138, 12, 48, 209, 250, 12, 48, 248, 62, 12, 48, 199, 233, 12, 48,
-    221, 79, 107, 12, 48, 221, 79, 109, 12, 48, 236, 202, 12, 48, 205, 61,
-    12, 48, 2, 107, 12, 48, 2, 109, 12, 48, 220, 30, 107, 12, 48, 220, 30,
-    109, 12, 48, 220, 30, 138, 12, 48, 220, 30, 134, 12, 48, 202, 58, 12, 48,
-    198, 227, 12, 48, 202, 55, 107, 12, 48, 202, 55, 109, 12, 48, 229, 224,
-    107, 12, 48, 229, 224, 109, 12, 48, 230, 53, 12, 48, 207, 136, 12, 48,
-    243, 64, 12, 48, 200, 198, 12, 48, 215, 205, 12, 48, 237, 143, 12, 48,
-    215, 193, 12, 48, 242, 249, 12, 48, 193, 144, 107, 12, 48, 193, 144, 109,
-    12, 48, 232, 243, 12, 48, 210, 76, 107, 12, 48, 210, 76, 109, 12, 48,
-    202, 178, 132, 197, 255, 197, 177, 12, 48, 238, 239, 12, 48, 236, 162,
-    12, 48, 223, 27, 12, 48, 248, 102, 79, 242, 213, 12, 48, 233, 193, 12,
-    48, 201, 215, 107, 12, 48, 201, 215, 109, 12, 48, 249, 103, 12, 48, 202,
-    185, 12, 48, 247, 190, 202, 185, 12, 48, 214, 86, 107, 12, 48, 214, 86,
-    109, 12, 48, 214, 86, 138, 12, 48, 214, 86, 134, 12, 48, 216, 172, 12,
-    48, 203, 107, 12, 48, 207, 142, 12, 48, 233, 223, 12, 48, 211, 119, 12,
-    48, 248, 18, 107, 12, 48, 248, 18, 109, 12, 48, 216, 224, 12, 48, 215,
-    199, 12, 48, 230, 214, 107, 12, 48, 230, 214, 109, 12, 48, 230, 214, 138,
-    12, 48, 198, 173, 12, 48, 242, 212, 12, 48, 193, 105, 107, 12, 48, 193,
-    105, 109, 12, 48, 247, 190, 205, 50, 12, 48, 202, 178, 228, 187, 12, 48,
-    228, 187, 12, 48, 247, 190, 201, 229, 12, 48, 247, 190, 203, 102, 12, 48,
-    232, 159, 12, 48, 247, 190, 247, 85, 12, 48, 202, 178, 193, 169, 12, 48,
-    193, 170, 107, 12, 48, 193, 170, 109, 12, 48, 242, 252, 12, 48, 247, 190,
-    230, 250, 12, 48, 179, 107, 12, 48, 179, 109, 12, 48, 247, 190, 219, 19,
-    12, 48, 247, 190, 231, 191, 12, 48, 215, 188, 107, 12, 48, 215, 188, 109,
-    12, 48, 207, 149, 12, 48, 248, 114, 12, 48, 247, 190, 199, 185, 219, 230,
-    12, 48, 247, 190, 219, 233, 12, 48, 247, 190, 193, 66, 12, 48, 247, 190,
-    232, 179, 12, 48, 234, 201, 107, 12, 48, 234, 201, 109, 12, 48, 234, 201,
-    138, 12, 48, 247, 190, 234, 200, 12, 48, 229, 235, 12, 48, 247, 190, 228,
-    183, 12, 48, 248, 98, 12, 48, 231, 61, 12, 48, 247, 190, 232, 236, 12,
-    48, 247, 190, 248, 160, 12, 48, 247, 190, 205, 158, 12, 48, 202, 178,
-    193, 95, 12, 48, 202, 178, 192, 72, 12, 48, 247, 190, 232, 99, 12, 48,
-    223, 34, 233, 228, 12, 48, 247, 190, 233, 228, 12, 48, 223, 34, 198, 56,
-    12, 48, 247, 190, 198, 56, 12, 48, 223, 34, 235, 111, 12, 48, 247, 190,
-    235, 111, 12, 48, 197, 55, 12, 48, 223, 34, 197, 55, 12, 48, 247, 190,
-    197, 55, 83, 48, 107, 83, 48, 219, 112, 83, 48, 236, 140, 83, 48, 202,
-    97, 83, 48, 205, 56, 83, 48, 102, 83, 48, 109, 83, 48, 219, 141, 83, 48,
-    217, 90, 83, 48, 219, 209, 83, 48, 234, 77, 83, 48, 171, 83, 48, 144,
-    248, 62, 83, 48, 238, 242, 83, 48, 228, 26, 83, 48, 199, 233, 83, 48,
-    211, 77, 248, 62, 83, 48, 221, 78, 83, 48, 208, 254, 83, 48, 193, 12, 83,
-    48, 201, 203, 83, 48, 50, 211, 77, 248, 62, 83, 48, 229, 146, 234, 98,
-    83, 48, 199, 95, 83, 48, 236, 202, 83, 48, 205, 61, 83, 48, 242, 230, 83,
-    48, 208, 204, 83, 48, 251, 252, 83, 48, 215, 179, 83, 48, 234, 98, 83,
-    48, 234, 207, 83, 48, 205, 91, 83, 48, 231, 3, 83, 48, 231, 4, 202, 74,
-    83, 48, 233, 227, 83, 48, 248, 174, 83, 48, 193, 35, 83, 48, 243, 86, 83,
-    48, 206, 133, 83, 48, 223, 158, 83, 48, 202, 70, 83, 48, 220, 29, 83, 48,
-    238, 252, 83, 48, 201, 194, 83, 48, 215, 184, 83, 48, 206, 176, 83, 48,
-    193, 20, 83, 48, 211, 95, 83, 48, 197, 63, 83, 48, 235, 91, 83, 48, 203,
-    40, 198, 227, 83, 48, 235, 138, 242, 230, 83, 48, 179, 201, 34, 83, 48,
-    105, 230, 28, 83, 48, 203, 46, 83, 48, 248, 69, 83, 48, 202, 54, 83, 48,
-    248, 25, 83, 48, 201, 78, 83, 48, 229, 223, 83, 48, 230, 71, 83, 48, 236,
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-    83, 48, 236, 236, 83, 48, 250, 132, 83, 48, 201, 190, 83, 48, 213, 11,
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-    14, 202, 35, 127, 228, 14, 214, 227, 127, 228, 14, 201, 231, 127, 228,
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-    105, 62, 201, 190, 47, 31, 197, 33, 211, 105, 62, 201, 190, 47, 31, 198,
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-    201, 190, 47, 31, 203, 242, 211, 105, 62, 201, 190, 47, 31, 234, 154,
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-    33, 109, 47, 31, 197, 33, 138, 47, 31, 197, 33, 134, 47, 31, 197, 33,
-    149, 47, 31, 197, 33, 169, 47, 31, 197, 33, 175, 47, 31, 197, 33, 171,
-    47, 31, 197, 33, 178, 47, 31, 198, 249, 47, 31, 198, 250, 107, 47, 31,
-    198, 250, 109, 47, 31, 198, 250, 138, 47, 31, 198, 250, 134, 47, 31, 198,
-    250, 149, 47, 30, 221, 113, 47, 30, 213, 204, 47, 30, 198, 168, 47, 30,
-    206, 239, 47, 30, 216, 77, 47, 30, 209, 169, 47, 30, 202, 160, 47, 30,
-    223, 222, 47, 30, 243, 24, 47, 30, 243, 91, 47, 30, 221, 188, 47, 30,
-    199, 7, 47, 30, 209, 209, 47, 30, 229, 142, 47, 30, 221, 114, 65, 47, 30,
-    213, 205, 65, 47, 30, 198, 169, 65, 47, 30, 206, 240, 65, 47, 30, 216,
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-    219, 88, 1, 233, 242, 219, 88, 1, 68, 219, 88, 1, 74, 219, 88, 1, 66,
-    219, 88, 1, 196, 152, 219, 88, 1, 196, 141, 219, 88, 1, 211, 151, 219,
-    88, 1, 163, 215, 69, 198, 193, 219, 88, 1, 163, 215, 7, 209, 73, 219, 88,
-    1, 163, 215, 69, 238, 142, 219, 88, 1, 163, 215, 69, 248, 111, 219, 88,
-    1, 163, 215, 69, 180, 219, 88, 1, 163, 215, 69, 222, 253, 219, 88, 208,
-    152, 242, 74, 219, 88, 208, 152, 232, 80, 201, 63, 59, 5, 234, 188, 59,
-    5, 234, 184, 59, 5, 229, 215, 59, 5, 193, 114, 59, 5, 193, 113, 59, 5,
-    210, 49, 59, 5, 248, 195, 59, 5, 249, 1, 59, 5, 217, 3, 59, 5, 221, 16,
-    59, 5, 216, 132, 59, 5, 231, 178, 59, 5, 233, 52, 59, 5, 195, 148, 59, 5,
-    199, 121, 59, 5, 199, 31, 59, 5, 237, 58, 59, 5, 237, 55, 59, 5, 219,
-    228, 59, 5, 207, 84, 59, 5, 237, 131, 59, 5, 214, 153, 59, 5, 205, 50,
-    59, 5, 203, 111, 59, 5, 191, 84, 59, 5, 191, 61, 59, 5, 247, 34, 59, 5,
-    223, 8, 59, 5, 213, 148, 59, 5, 192, 77, 59, 5, 222, 13, 59, 5, 214, 41,
-    59, 5, 231, 157, 59, 5, 216, 211, 59, 5, 214, 110, 59, 5, 212, 89, 59, 5,
-    68, 59, 5, 223, 162, 59, 5, 229, 158, 59, 5, 229, 128, 59, 5, 193, 86,
-    59, 5, 193, 68, 59, 5, 209, 185, 59, 5, 248, 193, 59, 5, 248, 188, 59, 5,
-    216, 252, 59, 5, 221, 13, 59, 5, 216, 129, 59, 5, 231, 174, 59, 5, 233,
-    23, 59, 5, 195, 69, 59, 5, 198, 193, 59, 5, 199, 11, 59, 5, 237, 50, 59,
-    5, 237, 54, 59, 5, 219, 146, 59, 5, 207, 1, 59, 5, 237, 44, 59, 5, 214,
-    147, 59, 5, 202, 222, 59, 5, 203, 81, 59, 5, 191, 30, 59, 5, 191, 57, 59,
-    5, 243, 29, 59, 5, 222, 244, 59, 5, 213, 141, 59, 5, 192, 33, 59, 5, 221,
-    166, 59, 5, 214, 33, 59, 5, 231, 53, 59, 5, 216, 100, 59, 5, 213, 219,
-    59, 5, 212, 81, 59, 5, 65, 59, 5, 251, 132, 59, 5, 214, 63, 59, 5, 140,
-    59, 5, 230, 56, 59, 5, 193, 190, 59, 5, 193, 164, 59, 5, 168, 59, 5, 248,
-    203, 59, 5, 249, 153, 59, 5, 217, 11, 59, 5, 221, 21, 59, 5, 221, 19, 59,
-    5, 216, 136, 59, 5, 231, 182, 59, 5, 233, 109, 59, 5, 195, 188, 59, 5,
-    190, 190, 59, 5, 199, 49, 59, 5, 237, 68, 59, 5, 237, 57, 59, 5, 173, 59,
-    5, 165, 59, 5, 238, 32, 59, 5, 214, 162, 59, 5, 188, 59, 5, 203, 165, 59,
-    5, 191, 123, 59, 5, 191, 71, 59, 5, 247, 160, 59, 5, 223, 32, 59, 5, 213,
-    157, 59, 5, 170, 59, 5, 155, 59, 5, 222, 87, 59, 5, 214, 47, 59, 5, 231,
-    240, 59, 5, 174, 59, 5, 180, 59, 5, 212, 101, 59, 5, 211, 87, 59, 5, 211,
-    82, 59, 5, 228, 252, 59, 5, 193, 29, 59, 5, 193, 25, 59, 5, 209, 37, 59,
-    5, 248, 191, 59, 5, 248, 97, 59, 5, 216, 247, 59, 5, 221, 11, 59, 5, 216,
-    125, 59, 5, 231, 170, 59, 5, 232, 162, 59, 5, 195, 8, 59, 5, 198, 59, 59,
-    5, 198, 235, 59, 5, 237, 47, 59, 5, 237, 52, 59, 5, 219, 8, 59, 5, 206,
-    134, 59, 5, 236, 146, 59, 5, 214, 134, 59, 5, 202, 16, 59, 5, 203, 48,
-    59, 5, 191, 4, 59, 5, 191, 52, 59, 5, 239, 18, 59, 5, 222, 191, 59, 5,
-    213, 131, 59, 5, 191, 246, 59, 5, 221, 41, 59, 5, 214, 31, 59, 5, 230,
-    245, 59, 5, 215, 211, 59, 5, 213, 26, 59, 5, 212, 62, 59, 5, 66, 59, 5,
-    196, 113, 59, 5, 228, 159, 59, 5, 228, 142, 59, 5, 193, 0, 59, 5, 192,
-    249, 59, 5, 208, 165, 59, 5, 248, 190, 59, 5, 248, 10, 59, 5, 216, 246,
-    59, 5, 221, 9, 59, 5, 216, 124, 59, 5, 231, 169, 59, 5, 232, 86, 59, 5,
-    193, 249, 59, 5, 197, 94, 59, 5, 198, 213, 59, 5, 237, 45, 59, 5, 237,
-    51, 59, 5, 218, 225, 59, 5, 206, 68, 59, 5, 235, 89, 59, 5, 214, 129, 59,
-    5, 201, 4, 59, 5, 203, 5, 59, 5, 190, 251, 59, 5, 191, 48, 59, 5, 238,
-    195, 59, 5, 222, 182, 59, 5, 213, 127, 59, 5, 191, 225, 59, 5, 220, 232,
-    59, 5, 214, 30, 59, 5, 230, 179, 59, 5, 215, 155, 59, 5, 212, 178, 59, 5,
-    212, 58, 59, 5, 74, 59, 5, 211, 104, 59, 5, 213, 245, 59, 5, 229, 23, 59,
-    5, 228, 255, 59, 5, 193, 48, 59, 5, 193, 30, 59, 5, 209, 73, 59, 5, 248,
-    192, 59, 5, 248, 111, 59, 5, 216, 248, 59, 5, 221, 12, 59, 5, 216, 127,
-    59, 5, 231, 172, 59, 5, 231, 171, 59, 5, 232, 175, 59, 5, 195, 24, 59, 5,
-    159, 59, 5, 198, 241, 59, 5, 237, 48, 59, 5, 237, 53, 59, 5, 219, 43, 59,
-    5, 206, 162, 59, 5, 236, 174, 59, 5, 214, 138, 59, 5, 202, 46, 59, 5,
-    203, 56, 59, 5, 191, 7, 59, 5, 191, 54, 59, 5, 242, 99, 59, 5, 222, 201,
-    59, 5, 213, 132, 59, 5, 192, 12, 59, 5, 221, 67, 59, 5, 214, 32, 59, 5,
-    231, 3, 59, 5, 216, 12, 59, 5, 213, 43, 59, 5, 212, 65, 59, 5, 71, 59, 5,
-    234, 103, 59, 5, 214, 52, 59, 5, 229, 245, 59, 5, 229, 198, 59, 5, 193,
-    125, 59, 5, 193, 108, 59, 5, 210, 63, 59, 5, 248, 196, 59, 5, 249, 17,
-    59, 5, 217, 4, 59, 5, 221, 17, 59, 5, 221, 15, 59, 5, 216, 133, 59, 5,
-    231, 179, 59, 5, 231, 177, 59, 5, 233, 59, 59, 5, 195, 153, 59, 5, 199,
-    145, 59, 5, 199, 33, 59, 5, 237, 59, 59, 5, 237, 56, 59, 5, 219, 238, 59,
-    5, 207, 113, 59, 5, 237, 146, 59, 5, 214, 154, 59, 5, 205, 68, 59, 5,
-    203, 113, 59, 5, 191, 87, 59, 5, 191, 62, 59, 5, 247, 42, 59, 5, 223, 10,
-    59, 5, 213, 150, 59, 5, 192, 80, 59, 5, 222, 22, 59, 5, 214, 42, 59, 5,
-    214, 38, 59, 5, 231, 165, 59, 5, 231, 151, 59, 5, 216, 232, 59, 5, 214,
-    121, 59, 5, 212, 90, 59, 5, 214, 70, 59, 5, 219, 190, 59, 242, 74, 59,
-    232, 80, 201, 63, 59, 208, 13, 77, 59, 5, 214, 137, 233, 109, 59, 5, 214,
-    137, 155, 59, 5, 214, 137, 202, 16, 59, 16, 233, 48, 59, 16, 222, 11, 59,
-    16, 198, 140, 59, 16, 213, 186, 59, 16, 249, 95, 59, 16, 233, 108, 59,
-    16, 199, 245, 59, 16, 237, 236, 59, 16, 236, 145, 59, 16, 220, 208, 59,
-    16, 198, 63, 59, 16, 236, 173, 59, 16, 222, 192, 59, 17, 191, 77, 59, 17,
-    107, 59, 17, 109, 59, 17, 138, 59, 17, 134, 59, 17, 149, 59, 17, 169, 59,
-    17, 175, 59, 17, 171, 59, 17, 178, 59, 5, 214, 137, 174, 59, 5, 214, 137,
-    236, 174, 38, 6, 1, 191, 81, 38, 2, 1, 191, 81, 38, 6, 1, 235, 30, 38, 2,
-    1, 235, 30, 38, 6, 1, 207, 18, 235, 32, 38, 2, 1, 207, 18, 235, 32, 38,
-    6, 1, 223, 83, 38, 2, 1, 223, 83, 38, 6, 1, 236, 191, 38, 2, 1, 236, 191,
-    38, 6, 1, 215, 219, 196, 128, 38, 2, 1, 215, 219, 196, 128, 38, 6, 1,
-    248, 24, 211, 110, 38, 2, 1, 248, 24, 211, 110, 38, 6, 1, 214, 82, 192,
-    62, 38, 2, 1, 214, 82, 192, 62, 38, 6, 1, 192, 59, 4, 249, 147, 192, 62,
-    38, 2, 1, 192, 59, 4, 249, 147, 192, 62, 38, 6, 1, 223, 81, 192, 95, 38,
-    2, 1, 223, 81, 192, 95, 38, 6, 1, 207, 18, 191, 225, 38, 2, 1, 207, 18,
-    191, 225, 38, 6, 1, 223, 81, 65, 38, 2, 1, 223, 81, 65, 38, 6, 1, 242,
-    219, 219, 83, 191, 190, 38, 2, 1, 242, 219, 219, 83, 191, 190, 38, 6, 1,
-    248, 131, 191, 190, 38, 2, 1, 248, 131, 191, 190, 38, 6, 1, 223, 81, 242,
-    219, 219, 83, 191, 190, 38, 2, 1, 223, 81, 242, 219, 219, 83, 191, 190,
-    38, 6, 1, 192, 14, 38, 2, 1, 192, 14, 38, 6, 1, 207, 18, 197, 161, 38, 2,
-    1, 207, 18, 197, 161, 38, 6, 1, 202, 32, 237, 146, 38, 2, 1, 202, 32,
-    237, 146, 38, 6, 1, 202, 32, 234, 140, 38, 2, 1, 202, 32, 234, 140, 38,
-    6, 1, 202, 32, 234, 114, 38, 2, 1, 202, 32, 234, 114, 38, 6, 1, 215, 223,
-    74, 38, 2, 1, 215, 223, 74, 38, 6, 1, 248, 164, 74, 38, 2, 1, 248, 164,
-    74, 38, 6, 1, 55, 215, 223, 74, 38, 2, 1, 55, 215, 223, 74, 38, 1, 215,
-    130, 74, 33, 38, 193, 226, 33, 38, 199, 96, 216, 48, 56, 33, 38, 228,
-    141, 216, 48, 56, 33, 38, 198, 230, 216, 48, 56, 202, 95, 250, 193, 33,
-    38, 1, 196, 125, 223, 226, 33, 38, 1, 68, 33, 38, 1, 192, 33, 33, 38, 1,
-    66, 33, 38, 1, 230, 17, 56, 33, 38, 1, 192, 58, 33, 38, 1, 202, 32, 56,
-    33, 38, 1, 211, 110, 33, 38, 222, 35, 33, 38, 210, 70, 38, 222, 35, 38,
-    210, 70, 38, 6, 1, 235, 45, 38, 2, 1, 235, 45, 38, 6, 1, 235, 21, 38, 2,
-    1, 235, 21, 38, 6, 1, 191, 38, 38, 2, 1, 191, 38, 38, 6, 1, 247, 58, 38,
-    2, 1, 247, 58, 38, 6, 1, 235, 17, 38, 2, 1, 235, 17, 38, 6, 1, 199, 146,
-    4, 82, 102, 38, 2, 1, 199, 146, 4, 82, 102, 38, 6, 1, 197, 41, 38, 2, 1,
-    197, 41, 38, 6, 1, 197, 136, 38, 2, 1, 197, 136, 38, 6, 1, 197, 141, 38,
-    2, 1, 197, 141, 38, 6, 1, 199, 151, 38, 2, 1, 199, 151, 38, 6, 1, 228,
-    122, 38, 2, 1, 228, 122, 38, 6, 1, 202, 237, 38, 2, 1, 202, 237, 38, 6,
-    1, 55, 74, 38, 2, 1, 55, 74, 38, 6, 1, 238, 214, 74, 38, 2, 1, 238, 214,
-    74, 52, 1, 38, 230, 17, 56, 52, 1, 38, 202, 32, 56, 33, 38, 1, 234, 181,
-    33, 38, 1, 223, 81, 71, 26, 1, 65, 26, 1, 155, 26, 1, 66, 26, 1, 220,
-    232, 26, 1, 234, 188, 26, 1, 207, 84, 26, 1, 199, 226, 26, 1, 74, 26, 1,
-    212, 81, 26, 1, 68, 26, 1, 173, 26, 1, 168, 26, 1, 206, 195, 26, 1, 206,
-    242, 26, 1, 219, 227, 26, 1, 216, 210, 26, 1, 199, 245, 26, 1, 214, 160,
-    26, 1, 213, 155, 26, 1, 218, 168, 26, 1, 200, 160, 26, 1, 215, 155, 26,
-    1, 203, 76, 26, 1, 202, 222, 26, 1, 203, 86, 26, 1, 203, 248, 26, 1, 220,
-    149, 26, 1, 221, 241, 26, 1, 212, 146, 26, 1, 212, 178, 26, 1, 213, 126,
-    26, 1, 191, 243, 26, 1, 203, 5, 26, 1, 191, 194, 26, 1, 170, 26, 1, 212,
-    215, 26, 1, 221, 227, 26, 1, 209, 232, 26, 1, 213, 148, 26, 1, 212, 195,
-    26, 1, 208, 156, 26, 1, 192, 253, 26, 1, 210, 49, 26, 1, 233, 52, 26, 1,
-    206, 68, 26, 1, 218, 225, 26, 1, 216, 100, 26, 1, 213, 219, 26, 1, 207,
-    20, 26, 1, 207, 163, 26, 1, 221, 251, 26, 1, 213, 252, 26, 1, 214, 47,
-    26, 1, 214, 68, 26, 1, 203, 56, 26, 1, 208, 161, 26, 1, 232, 86, 26, 1,
-    232, 167, 26, 1, 193, 190, 26, 1, 180, 26, 1, 219, 146, 26, 1, 209, 185,
-    26, 1, 219, 0, 26, 1, 221, 67, 26, 1, 217, 1, 26, 1, 207, 55, 26, 1, 216,
-    186, 26, 1, 174, 26, 1, 198, 193, 26, 1, 221, 166, 26, 1, 216, 12, 26, 1,
-    217, 9, 26, 1, 199, 73, 26, 1, 221, 21, 26, 1, 199, 95, 26, 1, 212, 181,
-    26, 1, 205, 150, 26, 1, 233, 105, 26, 1, 221, 24, 26, 1, 221, 57, 26, 33,
-    87, 221, 34, 26, 33, 87, 197, 79, 26, 213, 154, 26, 232, 80, 201, 63, 26,
-    242, 83, 26, 242, 74, 26, 204, 25, 26, 208, 13, 77, 52, 1, 243, 80, 163,
-    192, 22, 209, 132, 52, 1, 243, 80, 163, 192, 107, 209, 132, 52, 1, 243,
-    80, 163, 192, 22, 203, 137, 52, 1, 243, 80, 163, 192, 107, 203, 137, 52,
-    1, 243, 80, 163, 192, 22, 208, 33, 52, 1, 243, 80, 163, 192, 107, 208,
-    33, 52, 1, 243, 80, 163, 192, 22, 206, 68, 52, 1, 243, 80, 163, 192, 107,
-    206, 68, 52, 1, 233, 200, 235, 138, 163, 164, 52, 1, 137, 235, 138, 163,
-    164, 52, 1, 216, 87, 235, 138, 163, 164, 52, 1, 130, 235, 138, 163, 164,
-    52, 1, 233, 199, 235, 138, 163, 164, 52, 1, 233, 200, 235, 138, 219, 216,
-    163, 164, 52, 1, 137, 235, 138, 219, 216, 163, 164, 52, 1, 216, 87, 235,
-    138, 219, 216, 163, 164, 52, 1, 130, 235, 138, 219, 216, 163, 164, 52, 1,
-    233, 199, 235, 138, 219, 216, 163, 164, 52, 1, 233, 200, 219, 216, 163,
-    164, 52, 1, 137, 219, 216, 163, 164, 52, 1, 216, 87, 219, 216, 163, 164,
-    52, 1, 130, 219, 216, 163, 164, 52, 1, 233, 199, 219, 216, 163, 164, 52,
-    1, 75, 81, 164, 52, 1, 75, 202, 97, 52, 1, 75, 228, 241, 164, 52, 1, 110,
-    50, 239, 2, 251, 115, 52, 1, 207, 147, 133, 57, 52, 1, 207, 147, 144, 57,
-    52, 1, 207, 147, 233, 216, 77, 52, 1, 207, 147, 223, 93, 233, 216, 77,
-    52, 1, 130, 223, 93, 233, 216, 77, 52, 1, 201, 38, 23, 137, 198, 79, 52,
-    1, 201, 38, 23, 130, 198, 79, 8, 6, 1, 234, 175, 251, 192, 8, 2, 1, 234,
-    175, 251, 192, 8, 6, 1, 234, 175, 251, 230, 8, 2, 1, 234, 175, 251, 230,
-    8, 6, 1, 229, 196, 8, 2, 1, 229, 196, 8, 6, 1, 196, 241, 8, 2, 1, 196,
-    241, 8, 6, 1, 197, 248, 8, 2, 1, 197, 248, 8, 6, 1, 238, 192, 8, 2, 1,
-    238, 192, 8, 6, 1, 238, 193, 4, 242, 74, 8, 2, 1, 238, 193, 4, 242, 74,
-    8, 1, 2, 6, 233, 175, 8, 1, 2, 6, 206, 8, 8, 6, 1, 252, 206, 8, 2, 1,
-    252, 206, 8, 6, 1, 251, 68, 8, 2, 1, 251, 68, 8, 6, 1, 250, 163, 8, 2, 1,
-    250, 163, 8, 6, 1, 250, 146, 8, 2, 1, 250, 146, 8, 6, 1, 250, 147, 4,
-    228, 241, 164, 8, 2, 1, 250, 147, 4, 228, 241, 164, 8, 6, 1, 250, 131, 8,
-    2, 1, 250, 131, 8, 6, 1, 207, 18, 247, 194, 4, 236, 140, 8, 2, 1, 207,
-    18, 247, 194, 4, 236, 140, 8, 6, 1, 222, 153, 4, 106, 8, 2, 1, 222, 153,
-    4, 106, 8, 6, 1, 222, 153, 4, 237, 39, 106, 8, 2, 1, 222, 153, 4, 237,
-    39, 106, 8, 6, 1, 222, 153, 4, 201, 28, 23, 237, 39, 106, 8, 2, 1, 222,
-    153, 4, 201, 28, 23, 237, 39, 106, 8, 6, 1, 248, 22, 172, 8, 2, 1, 248,
-    22, 172, 8, 6, 1, 220, 143, 4, 137, 106, 8, 2, 1, 220, 143, 4, 137, 106,
-    8, 6, 1, 187, 4, 179, 201, 28, 210, 255, 8, 2, 1, 187, 4, 179, 201, 28,
-    210, 255, 8, 6, 1, 187, 4, 219, 4, 8, 2, 1, 187, 4, 219, 4, 8, 6, 1, 211,
-    87, 8, 2, 1, 211, 87, 8, 6, 1, 210, 237, 4, 201, 28, 198, 216, 237, 87,
-    8, 2, 1, 210, 237, 4, 201, 28, 198, 216, 237, 87, 8, 6, 1, 210, 237, 4,
-    232, 188, 8, 2, 1, 210, 237, 4, 232, 188, 8, 6, 1, 210, 237, 4, 201, 182,
-    199, 215, 8, 2, 1, 210, 237, 4, 201, 182, 199, 215, 8, 6, 1, 208, 105, 4,
-    201, 28, 198, 216, 237, 87, 8, 2, 1, 208, 105, 4, 201, 28, 198, 216, 237,
-    87, 8, 6, 1, 208, 105, 4, 237, 39, 106, 8, 2, 1, 208, 105, 4, 237, 39,
-    106, 8, 6, 1, 207, 222, 206, 116, 8, 2, 1, 207, 222, 206, 116, 8, 6, 1,
-    206, 49, 206, 116, 8, 2, 1, 206, 49, 206, 116, 8, 6, 1, 196, 13, 4, 237,
-    39, 106, 8, 2, 1, 196, 13, 4, 237, 39, 106, 8, 6, 1, 193, 235, 8, 2, 1,
-    193, 235, 8, 6, 1, 195, 33, 191, 166, 8, 2, 1, 195, 33, 191, 166, 8, 6,
-    1, 198, 234, 4, 106, 8, 2, 1, 198, 234, 4, 106, 8, 6, 1, 198, 234, 4,
-    201, 28, 198, 216, 237, 87, 8, 2, 1, 198, 234, 4, 201, 28, 198, 216, 237,
-    87, 8, 6, 1, 195, 142, 8, 2, 1, 195, 142, 8, 6, 1, 233, 255, 8, 2, 1,
-    233, 255, 8, 6, 1, 223, 68, 8, 2, 1, 223, 68, 8, 6, 1, 239, 57, 8, 2, 1,
-    239, 57, 52, 1, 196, 45, 8, 2, 1, 235, 77, 8, 2, 1, 218, 208, 8, 2, 1,
-    215, 123, 8, 2, 1, 212, 137, 8, 2, 1, 206, 48, 8, 1, 2, 6, 206, 48, 8, 2,
-    1, 197, 76, 8, 2, 1, 196, 120, 8, 6, 1, 223, 115, 238, 127, 8, 2, 1, 223,
-    115, 238, 127, 8, 6, 1, 223, 115, 233, 175, 8, 2, 1, 223, 115, 233, 175,
-    8, 6, 1, 223, 115, 232, 51, 8, 6, 1, 153, 223, 115, 232, 51, 8, 2, 1,
-    153, 223, 115, 232, 51, 8, 6, 1, 153, 172, 8, 2, 1, 153, 172, 8, 6, 1,
-    223, 115, 146, 8, 2, 1, 223, 115, 146, 8, 6, 1, 223, 115, 206, 8, 8, 2,
-    1, 223, 115, 206, 8, 8, 6, 1, 223, 115, 200, 43, 8, 2, 1, 223, 115, 200,
-    43, 52, 1, 130, 243, 2, 252, 60, 52, 1, 242, 83, 52, 1, 203, 40, 234, 43,
-    56, 8, 6, 1, 205, 156, 8, 2, 1, 205, 156, 8, 6, 1, 153, 230, 116, 8, 2,
-    1, 220, 143, 4, 207, 24, 228, 251, 23, 248, 231, 8, 1, 202, 163, 236,
-    140, 8, 6, 1, 215, 62, 4, 237, 87, 8, 2, 1, 215, 62, 4, 237, 87, 8, 6, 1,
-    247, 194, 4, 164, 8, 2, 1, 247, 194, 4, 164, 8, 2, 1, 247, 194, 4, 210,
-    192, 102, 8, 2, 1, 230, 117, 4, 210, 192, 102, 8, 6, 1, 78, 4, 232, 188,
-    8, 2, 1, 78, 4, 232, 188, 8, 6, 1, 233, 176, 4, 106, 8, 2, 1, 233, 176,
-    4, 106, 8, 6, 1, 195, 15, 252, 25, 8, 2, 1, 195, 15, 252, 25, 8, 6, 1,
-    195, 15, 211, 151, 8, 2, 1, 195, 15, 211, 151, 8, 6, 1, 195, 15, 196,
-    152, 8, 2, 1, 195, 15, 196, 152, 8, 6, 1, 232, 52, 4, 211, 172, 106, 8,
-    2, 1, 232, 52, 4, 211, 172, 106, 8, 6, 1, 222, 153, 4, 211, 172, 106, 8,
-    2, 1, 222, 153, 4, 211, 172, 106, 8, 6, 1, 215, 62, 4, 211, 172, 106, 8,
-    2, 1, 215, 62, 4, 211, 172, 106, 8, 6, 1, 207, 222, 4, 211, 172, 106, 8,
-    2, 1, 207, 222, 4, 211, 172, 106, 8, 6, 1, 206, 9, 4, 211, 172, 106, 8,
-    2, 1, 206, 9, 4, 211, 172, 106, 8, 6, 1, 230, 117, 4, 102, 8, 6, 1, 207,
-    18, 211, 77, 71, 8, 6, 1, 27, 232, 51, 8, 6, 1, 220, 143, 4, 248, 231, 8,
-    6, 1, 2, 6, 68, 8, 1, 2, 6, 208, 104, 8, 6, 1, 153, 222, 152, 8, 6, 1,
-    153, 200, 43, 8, 6, 1, 223, 36, 4, 238, 212, 8, 6, 1, 243, 95, 8, 6, 1,
-    248, 212, 8, 2, 1, 248, 212, 8, 6, 1, 211, 110, 8, 2, 1, 211, 110, 8, 6,
-    1, 126, 4, 106, 8, 2, 1, 126, 4, 106, 8, 6, 1, 231, 11, 65, 8, 2, 1, 231,
-    11, 65, 8, 6, 1, 231, 11, 68, 8, 2, 1, 231, 11, 68, 8, 6, 1, 231, 11, 66,
-    8, 2, 1, 231, 11, 66, 8, 6, 1, 39, 209, 49, 74, 8, 2, 1, 39, 209, 49, 74,
-    8, 6, 1, 251, 112, 193, 224, 8, 2, 1, 251, 112, 193, 224, 8, 6, 1, 247,
-    194, 4, 210, 192, 102, 8, 6, 1, 206, 9, 4, 102, 8, 6, 1, 191, 167, 4,
-    210, 192, 102, 8, 6, 1, 238, 128, 4, 203, 40, 201, 28, 210, 255, 8, 2, 1,
-    238, 128, 4, 203, 40, 201, 28, 210, 255, 8, 6, 1, 206, 9, 4, 203, 40,
-    201, 28, 210, 255, 8, 2, 1, 206, 9, 4, 203, 40, 201, 28, 210, 255, 8, 6,
-    1, 242, 219, 223, 115, 232, 51, 8, 2, 1, 242, 219, 223, 115, 232, 51, 8,
-    2, 1, 55, 198, 233, 8, 2, 1, 55, 192, 238, 8, 6, 1, 82, 205, 79, 206, 8,
-    8, 2, 1, 82, 205, 79, 206, 8, 8, 6, 1, 202, 195, 206, 8, 8, 2, 1, 202,
-    195, 206, 8, 52, 1, 6, 247, 193, 52, 1, 6, 233, 175, 52, 1, 6, 208, 104,
-    8, 6, 1, 207, 18, 132, 230, 116, 8, 2, 1, 207, 18, 132, 230, 116, 8, 234,
-    50, 1, 202, 206, 68, 52, 1, 6, 230, 117, 4, 106, 52, 1, 2, 34, 211, 151,
-    8, 1, 2, 6, 153, 218, 168, 8, 234, 50, 1, 207, 18, 233, 175, 8, 234, 50,
-    1, 207, 18, 210, 236, 8, 234, 50, 1, 223, 93, 218, 168, 8, 234, 50, 1,
-    228, 74, 219, 10, 8, 234, 50, 1, 251, 14, 218, 168, 200, 124, 214, 238,
-    1, 65, 200, 124, 214, 238, 1, 68, 200, 124, 214, 238, 3, 235, 54, 200,
-    124, 214, 238, 1, 66, 200, 124, 214, 238, 1, 71, 200, 124, 214, 238, 1,
-    74, 200, 124, 214, 238, 3, 230, 11, 200, 124, 214, 238, 1, 221, 67, 200,
-    124, 214, 238, 1, 221, 183, 200, 124, 214, 238, 1, 231, 3, 200, 124, 214,
-    238, 1, 231, 63, 200, 124, 214, 238, 3, 251, 71, 200, 124, 214, 238, 1,
-    242, 99, 200, 124, 214, 238, 1, 243, 68, 200, 124, 214, 238, 1, 222, 201,
-    200, 124, 214, 238, 1, 222, 246, 200, 124, 214, 238, 1, 197, 109, 200,
-    124, 214, 238, 1, 197, 115, 200, 124, 214, 238, 1, 237, 161, 200, 124,
-    214, 238, 1, 237, 170, 200, 124, 214, 238, 1, 159, 200, 124, 214, 238, 1,
-    198, 241, 200, 124, 214, 238, 1, 236, 174, 200, 124, 214, 238, 1, 237,
-    48, 200, 124, 214, 238, 1, 213, 43, 200, 124, 214, 238, 1, 209, 73, 200,
-    124, 214, 238, 1, 209, 199, 200, 124, 214, 238, 1, 248, 111, 200, 124,
-    214, 238, 1, 248, 192, 200, 124, 214, 238, 1, 216, 12, 200, 124, 214,
-    238, 1, 206, 162, 200, 124, 214, 238, 1, 219, 43, 200, 124, 214, 238, 1,
-    206, 95, 200, 124, 214, 238, 1, 202, 46, 200, 124, 214, 238, 1, 229, 23,
-    200, 124, 214, 238, 18, 3, 65, 200, 124, 214, 238, 18, 3, 68, 200, 124,
-    214, 238, 18, 3, 66, 200, 124, 214, 238, 18, 3, 71, 200, 124, 214, 238,
-    18, 3, 211, 87, 200, 124, 214, 238, 209, 63, 217, 55, 200, 124, 214, 238,
-    209, 63, 217, 54, 200, 124, 214, 238, 209, 63, 217, 53, 200, 124, 214,
-    238, 209, 63, 217, 52, 200, 124, 214, 238, 3, 251, 157, 230, 11, 186,
-    223, 146, 232, 118, 91, 208, 22, 186, 223, 146, 232, 118, 91, 230, 70,
-    186, 223, 146, 232, 118, 115, 208, 20, 186, 223, 146, 232, 118, 91, 202,
-    128, 186, 223, 146, 232, 118, 91, 234, 159, 186, 223, 146, 232, 118, 115,
-    202, 125, 186, 223, 146, 208, 23, 77, 186, 223, 146, 209, 107, 77, 186,
-    223, 146, 206, 36, 77, 186, 223, 146, 208, 25, 77, 209, 224, 1, 155, 209,
-    224, 1, 221, 215, 209, 224, 1, 231, 240, 209, 224, 1, 214, 68, 209, 224,
-    1, 247, 160, 209, 224, 1, 247, 1, 209, 224, 1, 223, 32, 209, 224, 1, 212,
-    101, 209, 224, 1, 190, 190, 209, 224, 1, 199, 49, 209, 224, 1, 238, 32,
-    209, 224, 1, 180, 209, 224, 1, 168, 209, 224, 1, 209, 228, 209, 224, 1,
-    249, 153, 209, 224, 1, 174, 209, 224, 1, 197, 168, 209, 224, 1, 197, 157,
-    209, 224, 1, 235, 35, 209, 224, 1, 193, 190, 209, 224, 1, 191, 71, 209,
-    224, 1, 191, 123, 209, 224, 1, 2, 65, 209, 224, 1, 170, 209, 224, 1, 165,
-    209, 224, 1, 173, 209, 224, 1, 203, 165, 209, 224, 1, 188, 209, 224, 1,
-    140, 209, 224, 1, 65, 209, 224, 1, 68, 209, 224, 1, 66, 209, 224, 1, 71,
-    209, 224, 1, 74, 209, 224, 1, 208, 96, 209, 224, 1, 192, 220, 209, 224,
-    1, 233, 109, 209, 224, 1, 231, 127, 209, 224, 1, 234, 188, 209, 224, 200,
-    239, 1, 193, 190, 209, 224, 200, 239, 1, 170, 209, 224, 1, 197, 132, 209,
-    224, 1, 197, 120, 209, 224, 1, 237, 191, 209, 224, 1, 213, 79, 209, 224,
-    1, 251, 157, 170, 209, 224, 1, 195, 19, 203, 165, 209, 224, 1, 195, 20,
-    140, 209, 224, 1, 250, 200, 233, 109, 209, 224, 200, 239, 1, 165, 209,
-    224, 200, 185, 1, 165, 209, 224, 1, 247, 119, 209, 224, 202, 170, 229,
-    236, 77, 209, 224, 55, 229, 236, 77, 209, 224, 87, 203, 157, 209, 224,
-    87, 55, 203, 157, 205, 111, 3, 251, 71, 205, 111, 3, 195, 35, 205, 111,
-    1, 65, 205, 111, 1, 252, 206, 205, 111, 1, 68, 205, 111, 1, 223, 199,
-    205, 111, 1, 66, 205, 111, 1, 196, 30, 205, 111, 1, 117, 146, 205, 111,
-    1, 117, 206, 110, 205, 111, 1, 117, 172, 205, 111, 1, 117, 219, 74, 205,
-    111, 1, 71, 205, 111, 1, 234, 188, 205, 111, 1, 251, 236, 205, 111, 1,
-    74, 205, 111, 1, 211, 87, 205, 111, 1, 250, 163, 205, 111, 1, 155, 205,
-    111, 1, 221, 215, 205, 111, 1, 231, 240, 205, 111, 1, 231, 91, 205, 111,
-    1, 214, 68, 205, 111, 1, 247, 160, 205, 111, 1, 247, 1, 205, 111, 1, 223,
-    32, 205, 111, 1, 222, 252, 205, 111, 1, 212, 101, 205, 111, 1, 197, 132,
-    205, 111, 1, 197, 120, 205, 111, 1, 237, 191, 205, 111, 1, 237, 175, 205,
-    111, 1, 213, 79, 205, 111, 1, 190, 190, 205, 111, 1, 199, 49, 205, 111,
-    1, 238, 32, 205, 111, 1, 237, 68, 205, 111, 1, 180, 205, 111, 1, 168,
-    205, 111, 1, 209, 228, 205, 111, 1, 249, 153, 205, 111, 1, 248, 203, 205,
-    111, 1, 174, 205, 111, 1, 170, 205, 111, 1, 165, 205, 111, 1, 173, 205,
-    111, 1, 195, 188, 205, 111, 1, 203, 165, 205, 111, 1, 201, 175, 205, 111,
-    1, 188, 205, 111, 1, 140, 205, 111, 1, 219, 73, 205, 111, 120, 3, 230,
-    89, 205, 111, 18, 3, 252, 206, 205, 111, 18, 3, 68, 205, 111, 18, 3, 223,
-    199, 205, 111, 18, 3, 66, 205, 111, 18, 3, 196, 30, 205, 111, 18, 3, 117,
-    146, 205, 111, 18, 3, 117, 206, 110, 205, 111, 18, 3, 117, 172, 205, 111,
-    18, 3, 117, 219, 74, 205, 111, 18, 3, 71, 205, 111, 18, 3, 234, 188, 205,
-    111, 18, 3, 251, 236, 205, 111, 18, 3, 74, 205, 111, 18, 3, 211, 87, 205,
-    111, 18, 3, 250, 163, 205, 111, 3, 195, 40, 205, 111, 3, 247, 119, 205,
-    111, 237, 238, 205, 111, 55, 237, 238, 205, 111, 17, 191, 77, 205, 111,
-    17, 107, 205, 111, 17, 109, 205, 111, 17, 138, 205, 111, 17, 134, 205,
-    111, 17, 149, 205, 111, 17, 169, 205, 111, 17, 175, 205, 111, 17, 171,
-    205, 111, 17, 178, 33, 100, 17, 191, 77, 33, 100, 17, 107, 33, 100, 17,
-    109, 33, 100, 17, 138, 33, 100, 17, 134, 33, 100, 17, 149, 33, 100, 17,
-    169, 33, 100, 17, 175, 33, 100, 17, 171, 33, 100, 17, 178, 33, 100, 1,
-    65, 33, 100, 1, 66, 33, 100, 1, 155, 33, 100, 1, 180, 33, 100, 1, 168,
-    33, 100, 1, 165, 33, 100, 1, 195, 69, 33, 100, 3, 250, 145, 100, 3, 201,
-    246, 247, 119, 100, 3, 247, 120, 195, 40, 100, 3, 55, 247, 120, 195, 40,
-    100, 3, 247, 120, 109, 100, 3, 247, 120, 138, 100, 3, 247, 120, 250, 145,
-    100, 3, 208, 134, 100, 231, 204, 233, 3, 100, 247, 96, 100, 229, 227,
-    100, 3, 202, 210, 100, 223, 24, 211, 113, 100, 1, 250, 131, 100, 18, 3,
-    250, 131, 222, 28, 219, 147, 17, 191, 77, 222, 28, 219, 147, 17, 107,
-    222, 28, 219, 147, 17, 109, 222, 28, 219, 147, 17, 138, 222, 28, 219,
-    147, 17, 134, 222, 28, 219, 147, 17, 149, 222, 28, 219, 147, 17, 169,
-    222, 28, 219, 147, 17, 175, 222, 28, 219, 147, 17, 171, 222, 28, 219,
-    147, 17, 178, 222, 28, 219, 147, 1, 155, 222, 28, 219, 147, 1, 221, 215,
-    222, 28, 219, 147, 1, 231, 240, 222, 28, 219, 147, 1, 214, 68, 222, 28,
-    219, 147, 1, 188, 222, 28, 219, 147, 1, 203, 165, 222, 28, 219, 147, 1,
-    191, 123, 222, 28, 219, 147, 1, 212, 101, 222, 28, 219, 147, 1, 190, 190,
-    222, 28, 219, 147, 1, 228, 164, 222, 28, 219, 147, 1, 180, 222, 28, 219,
-    147, 1, 168, 222, 28, 219, 147, 1, 209, 228, 222, 28, 219, 147, 1, 174,
-    222, 28, 219, 147, 1, 238, 32, 222, 28, 219, 147, 1, 249, 153, 222, 28,
-    219, 147, 1, 165, 222, 28, 219, 147, 1, 170, 222, 28, 219, 147, 1, 173,
-    222, 28, 219, 147, 1, 193, 190, 222, 28, 219, 147, 1, 199, 49, 222, 28,
-    219, 147, 1, 140, 222, 28, 219, 147, 1, 195, 188, 222, 28, 219, 147, 1,
-    247, 160, 222, 28, 219, 147, 1, 65, 222, 28, 219, 147, 1, 211, 151, 222,
-    28, 219, 147, 1, 68, 222, 28, 219, 147, 1, 211, 87, 222, 28, 219, 147,
-    18, 196, 152, 222, 28, 219, 147, 18, 71, 222, 28, 219, 147, 18, 66, 222,
-    28, 219, 147, 18, 234, 188, 222, 28, 219, 147, 18, 74, 222, 28, 219, 147,
-    163, 209, 90, 222, 28, 219, 147, 163, 247, 135, 222, 28, 219, 147, 163,
-    247, 136, 209, 90, 222, 28, 219, 147, 3, 238, 147, 222, 28, 219, 147, 3,
-    202, 230, 207, 67, 1, 155, 207, 67, 1, 231, 240, 207, 67, 1, 214, 68,
-    207, 67, 1, 190, 190, 207, 67, 1, 238, 32, 207, 67, 1, 180, 207, 67, 1,
-    168, 207, 67, 1, 249, 153, 207, 67, 1, 174, 207, 67, 1, 247, 160, 207,
-    67, 1, 223, 32, 207, 67, 1, 212, 101, 207, 67, 1, 188, 207, 67, 1, 165,
-    207, 67, 1, 173, 207, 67, 1, 170, 207, 67, 1, 193, 190, 207, 67, 1, 140,
-    207, 67, 1, 217, 11, 207, 67, 1, 214, 47, 207, 67, 1, 214, 162, 207, 67,
-    1, 212, 66, 207, 67, 1, 65, 207, 67, 18, 3, 68, 207, 67, 18, 3, 66, 207,
-    67, 18, 3, 71, 207, 67, 18, 3, 251, 236, 207, 67, 18, 3, 74, 207, 67, 18,
-    3, 250, 163, 207, 67, 18, 3, 233, 242, 207, 67, 18, 3, 234, 217, 207, 67,
-    120, 3, 214, 70, 207, 67, 120, 3, 215, 61, 207, 67, 120, 3, 146, 207, 67,
-    120, 3, 230, 116, 207, 67, 195, 40, 207, 67, 205, 54, 77, 30, 147, 198,
-    164, 30, 147, 198, 163, 30, 147, 198, 161, 30, 147, 198, 166, 30, 147,
-    206, 234, 30, 147, 206, 218, 30, 147, 206, 213, 30, 147, 206, 215, 30,
-    147, 206, 231, 30, 147, 206, 224, 30, 147, 206, 217, 30, 147, 206, 236,
-    30, 147, 206, 219, 30, 147, 206, 238, 30, 147, 206, 235, 30, 147, 216,
-    73, 30, 147, 216, 64, 30, 147, 216, 67, 30, 147, 209, 154, 30, 147, 209,
-    165, 30, 147, 209, 166, 30, 147, 201, 159, 30, 147, 223, 212, 30, 147,
-    223, 219, 30, 147, 201, 170, 30, 147, 201, 157, 30, 147, 209, 208, 30,
-    147, 229, 137, 30, 147, 201, 154, 223, 16, 3, 210, 143, 223, 16, 3, 247,
-    39, 223, 16, 3, 219, 246, 223, 16, 3, 193, 71, 223, 16, 1, 65, 223, 16,
-    1, 228, 74, 222, 32, 223, 16, 1, 68, 223, 16, 1, 223, 199, 223, 16, 1,
-    66, 223, 16, 1, 210, 221, 247, 9, 223, 16, 1, 214, 69, 219, 203, 223, 16,
-    1, 214, 69, 219, 204, 207, 131, 223, 16, 1, 71, 223, 16, 1, 251, 236,
-    223, 16, 1, 74, 223, 16, 1, 155, 223, 16, 1, 222, 142, 205, 124, 223, 16,
-    1, 222, 142, 215, 107, 223, 16, 1, 231, 240, 223, 16, 1, 231, 241, 215,
-    107, 223, 16, 1, 214, 68, 223, 16, 1, 247, 160, 223, 16, 1, 247, 161,
-    215, 107, 223, 16, 1, 223, 32, 223, 16, 1, 212, 102, 215, 107, 223, 16,
-    1, 223, 33, 217, 116, 223, 16, 1, 212, 101, 223, 16, 1, 197, 132, 223,
-    16, 1, 197, 133, 217, 116, 223, 16, 1, 237, 191, 223, 16, 1, 237, 192,
-    217, 116, 223, 16, 1, 215, 7, 215, 107, 223, 16, 1, 190, 190, 223, 16, 1,
-    199, 252, 215, 107, 223, 16, 1, 238, 32, 223, 16, 1, 238, 33, 217, 116,
-    223, 16, 1, 180, 223, 16, 1, 168, 223, 16, 1, 210, 221, 215, 107, 223,
-    16, 1, 249, 153, 223, 16, 1, 249, 154, 215, 107, 223, 16, 1, 174, 223,
-    16, 1, 170, 223, 16, 1, 165, 223, 16, 1, 207, 186, 251, 246, 223, 16, 1,
-    173, 223, 16, 1, 193, 190, 223, 16, 1, 205, 207, 215, 107, 223, 16, 1,
-    205, 207, 217, 116, 223, 16, 1, 188, 223, 16, 1, 140, 223, 16, 3, 247,
-    40, 199, 100, 223, 16, 18, 3, 199, 175, 223, 16, 18, 3, 198, 84, 223, 16,
-    18, 3, 192, 250, 223, 16, 18, 3, 192, 251, 216, 198, 223, 16, 18, 3, 200,
-    208, 223, 16, 18, 3, 200, 209, 216, 185, 223, 16, 18, 3, 199, 201, 223,
-    16, 18, 3, 236, 230, 215, 106, 223, 16, 18, 3, 210, 16, 223, 16, 120, 3,
-    221, 244, 223, 16, 120, 3, 210, 31, 223, 16, 120, 3, 247, 145, 223, 16,
-    210, 157, 223, 16, 45, 207, 40, 223, 16, 50, 207, 40, 223, 16, 210, 209,
-    251, 124, 223, 16, 210, 209, 217, 137, 223, 16, 210, 209, 218, 212, 223,
-    16, 210, 209, 193, 64, 223, 16, 210, 209, 210, 158, 223, 16, 210, 209,
-    219, 104, 223, 16, 210, 209, 218, 204, 223, 16, 210, 209, 252, 36, 223,
-    16, 210, 209, 252, 37, 252, 36, 223, 16, 210, 209, 209, 119, 223, 16,
-    153, 210, 209, 209, 119, 223, 16, 210, 153, 223, 16, 17, 191, 77, 223,
-    16, 17, 107, 223, 16, 17, 109, 223, 16, 17, 138, 223, 16, 17, 134, 223,
-    16, 17, 149, 223, 16, 17, 169, 223, 16, 17, 175, 223, 16, 17, 171, 223,
-    16, 17, 178, 223, 16, 210, 209, 198, 127, 197, 73, 223, 16, 210, 209,
-    223, 64, 80, 1, 203, 139, 231, 91, 80, 1, 203, 139, 247, 1, 80, 1, 203,
-    139, 222, 252, 80, 1, 203, 139, 213, 79, 80, 1, 203, 139, 248, 203, 80,
-    3, 203, 139, 205, 108, 80, 52, 1, 203, 139, 207, 85, 80, 1, 54, 220, 95,
-    212, 101, 80, 1, 54, 220, 95, 233, 109, 80, 1, 54, 220, 95, 231, 240, 80,
-    1, 54, 220, 95, 231, 91, 80, 1, 54, 220, 95, 223, 32, 80, 1, 54, 220, 95,
-    222, 252, 80, 1, 54, 220, 95, 237, 191, 80, 1, 54, 220, 95, 237, 175, 80,
-    1, 54, 220, 95, 213, 79, 80, 54, 220, 95, 17, 191, 77, 80, 54, 220, 95,
-    17, 107, 80, 54, 220, 95, 17, 109, 80, 54, 220, 95, 17, 138, 80, 54, 220,
-    95, 17, 134, 80, 54, 220, 95, 17, 149, 80, 54, 220, 95, 17, 169, 80, 54,
-    220, 95, 17, 175, 80, 54, 220, 95, 17, 171, 80, 54, 220, 95, 17, 178, 80,
-    1, 54, 220, 95, 219, 73, 80, 1, 54, 220, 95, 238, 32, 80, 1, 54, 220, 95,
-    237, 68, 80, 1, 54, 220, 95, 249, 153, 80, 1, 54, 220, 95, 248, 203, 246,
-    250, 1, 65, 246, 250, 1, 68, 246, 250, 1, 66, 246, 250, 1, 71, 246, 250,
-    1, 251, 236, 246, 250, 1, 74, 246, 250, 1, 155, 246, 250, 1, 221, 215,
-    246, 250, 1, 231, 240, 246, 250, 1, 231, 91, 246, 250, 1, 213, 233, 246,
-    250, 1, 214, 68, 246, 250, 1, 247, 1, 246, 250, 1, 243, 98, 246, 250, 1,
-    223, 32, 246, 250, 1, 222, 252, 246, 250, 1, 213, 221, 246, 250, 1, 213,
-    224, 246, 250, 1, 213, 222, 246, 250, 1, 190, 190, 246, 250, 1, 199, 49,
-    246, 250, 1, 238, 32, 246, 250, 1, 237, 68, 246, 250, 1, 212, 144, 246,
-    250, 1, 180, 246, 250, 1, 237, 191, 246, 250, 1, 168, 246, 250, 1, 208,
-    250, 246, 250, 1, 209, 228, 246, 250, 1, 249, 153, 246, 250, 1, 248, 203,
-    246, 250, 1, 215, 143, 246, 250, 1, 174, 246, 250, 1, 249, 53, 246, 250,
-    1, 170, 246, 250, 1, 165, 246, 250, 1, 173, 246, 250, 1, 195, 188, 246,
-    250, 1, 201, 175, 246, 250, 1, 188, 246, 250, 1, 140, 246, 250, 18, 3,
-    252, 206, 246, 250, 18, 3, 68, 246, 250, 18, 3, 223, 199, 246, 250, 18,
-    3, 234, 166, 246, 250, 18, 3, 66, 246, 250, 18, 3, 211, 151, 246, 250,
-    18, 3, 74, 246, 250, 18, 3, 251, 236, 246, 250, 18, 3, 250, 163, 246,
-    250, 18, 3, 196, 152, 246, 250, 120, 3, 170, 246, 250, 120, 3, 165, 246,
-    250, 120, 3, 173, 246, 250, 120, 3, 193, 190, 246, 250, 1, 53, 222, 152,
-    246, 250, 1, 53, 232, 51, 246, 250, 1, 53, 214, 70, 246, 250, 120, 3, 53,
-    214, 70, 246, 250, 1, 53, 247, 3, 246, 250, 1, 53, 200, 43, 246, 250, 1,
-    53, 215, 61, 246, 250, 1, 53, 210, 236, 246, 250, 1, 53, 192, 159, 246,
-    250, 1, 53, 146, 246, 250, 1, 53, 172, 246, 250, 1, 53, 201, 178, 246,
-    250, 120, 3, 53, 218, 168, 246, 250, 120, 3, 53, 230, 116, 246, 250, 17,
-    191, 77, 246, 250, 17, 107, 246, 250, 17, 109, 246, 250, 17, 138, 246,
-    250, 17, 134, 246, 250, 17, 149, 246, 250, 17, 169, 246, 250, 17, 175,
-    246, 250, 17, 171, 246, 250, 17, 178, 246, 250, 208, 152, 201, 217, 246,
-    250, 208, 152, 237, 238, 246, 250, 208, 152, 55, 237, 238, 246, 250, 208,
-    152, 197, 225, 237, 238, 80, 1, 221, 206, 231, 240, 80, 1, 221, 206, 247,
-    160, 80, 1, 221, 206, 247, 1, 80, 1, 221, 206, 223, 32, 80, 1, 221, 206,
-    222, 252, 80, 1, 221, 206, 212, 101, 80, 1, 221, 206, 197, 132, 80, 1,
-    221, 206, 197, 120, 80, 1, 221, 206, 237, 191, 80, 1, 221, 206, 237, 175,
-    80, 1, 221, 206, 237, 68, 80, 1, 221, 206, 180, 80, 1, 221, 206, 188, 80,
-    1, 221, 206, 140, 80, 1, 221, 206, 229, 177, 80, 1, 221, 206, 233, 109,
-    80, 52, 1, 221, 206, 207, 85, 80, 1, 221, 206, 192, 220, 80, 1, 221, 206,
-    191, 123, 80, 1, 221, 206, 165, 80, 219, 28, 221, 206, 211, 179, 80, 219,
-    28, 221, 206, 208, 46, 80, 219, 28, 221, 206, 229, 78, 80, 16, 251, 222,
-    233, 215, 80, 16, 251, 222, 107, 80, 16, 251, 222, 109, 80, 1, 251, 222,
-    165, 80, 3, 210, 139, 222, 62, 198, 79, 80, 3, 54, 220, 95, 198, 77, 80,
-    3, 54, 220, 95, 198, 74, 80, 1, 202, 238, 210, 189, 247, 1, 80, 1, 202,
-    238, 210, 189, 203, 165, 54, 195, 59, 1, 130, 221, 67, 54, 195, 59, 1,
-    137, 221, 67, 54, 195, 59, 1, 130, 221, 183, 54, 195, 59, 1, 137, 221,
-    183, 54, 195, 59, 1, 130, 221, 192, 54, 195, 59, 1, 137, 221, 192, 54,
-    195, 59, 1, 130, 231, 3, 54, 195, 59, 1, 137, 231, 3, 54, 195, 59, 1,
-    130, 213, 249, 54, 195, 59, 1, 137, 213, 249, 54, 195, 59, 1, 130, 242,
-    99, 54, 195, 59, 1, 137, 242, 99, 54, 195, 59, 1, 130, 243, 68, 54, 195,
-    59, 1, 137, 243, 68, 54, 195, 59, 1, 130, 202, 46, 54, 195, 59, 1, 137,
-    202, 46, 54, 195, 59, 1, 130, 212, 65, 54, 195, 59, 1, 137, 212, 65, 54,
-    195, 59, 1, 130, 236, 174, 54, 195, 59, 1, 137, 236, 174, 54, 195, 59, 1,
-    130, 159, 54, 195, 59, 1, 137, 159, 54, 195, 59, 1, 130, 198, 241, 54,
-    195, 59, 1, 137, 198, 241, 54, 195, 59, 1, 130, 213, 43, 54, 195, 59, 1,
-    137, 213, 43, 54, 195, 59, 1, 130, 248, 111, 54, 195, 59, 1, 137, 248,
-    111, 54, 195, 59, 1, 130, 209, 73, 54, 195, 59, 1, 137, 209, 73, 54, 195,
-    59, 1, 130, 209, 199, 54, 195, 59, 1, 137, 209, 199, 54, 195, 59, 1, 130,
-    232, 175, 54, 195, 59, 1, 137, 232, 175, 54, 195, 59, 1, 130, 216, 12,
-    54, 195, 59, 1, 137, 216, 12, 54, 195, 59, 1, 130, 192, 12, 54, 195, 59,
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-    219, 43, 103, 2, 1, 218, 225, 103, 2, 1, 218, 192, 103, 2, 1, 174, 103,
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-    224, 170, 12, 15, 224, 169, 12, 15, 224, 168, 12, 15, 224, 167, 12, 15,
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-    224, 146, 12, 15, 224, 145, 12, 15, 224, 144, 12, 15, 224, 143, 12, 15,
-    224, 142, 12, 15, 224, 141, 12, 15, 224, 140, 12, 15, 224, 139, 12, 15,
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-    15, 224, 85, 12, 15, 224, 84, 12, 15, 224, 83, 12, 15, 224, 82, 12, 15,
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-    77, 12, 15, 224, 76, 12, 15, 224, 75, 12, 15, 224, 74, 12, 15, 224, 73,
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-    60, 12, 15, 224, 59, 12, 15, 224, 58, 12, 15, 224, 57, 12, 15, 224, 56,
-    12, 15, 224, 55, 12, 15, 224, 54, 12, 15, 224, 53, 12, 15, 224, 52, 12,
-    15, 224, 51, 12, 15, 224, 50, 12, 15, 224, 49, 12, 15, 224, 48, 12, 15,
-    224, 47, 12, 15, 224, 46, 12, 15, 224, 45, 12, 15, 224, 44, 12, 15, 224,
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-    12, 15, 224, 21, 12, 15, 224, 20, 12, 15, 224, 19, 12, 15, 224, 18, 12,
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-    9, 12, 15, 224, 8, 12, 15, 224, 7, 12, 15, 224, 6, 12, 15, 224, 5, 12,
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-    248, 12, 15, 223, 247, 12, 15, 223, 246, 12, 15, 223, 245, 12, 15, 223,
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-    232, 12, 15, 223, 231, 8, 2, 34, 233, 27, 8, 2, 34, 233, 23, 8, 2, 34,
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-    200, 43, 8, 2, 34, 201, 118, 250, 249, 2, 34, 216, 187, 212, 253, 250,
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-    193, 136, 1, 193, 78, 207, 38, 136, 1, 193, 78, 199, 162, 136, 1, 251,
-    152, 108, 56, 136, 1, 203, 70, 4, 203, 70, 236, 140, 136, 1, 203, 70, 4,
-    202, 175, 236, 140, 136, 1, 203, 70, 4, 238, 17, 23, 203, 70, 236, 140,
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-    4, 238, 16, 136, 1, 231, 39, 4, 238, 16, 136, 1, 237, 254, 4, 238, 16,
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-    1, 248, 244, 216, 217, 20, 9, 1, 197, 123, 76, 20, 9, 1, 197, 123, 53,
-    20, 9, 1, 197, 123, 89, 20, 9, 1, 197, 123, 216, 217, 20, 9, 1, 199, 113,
-    76, 20, 9, 1, 199, 113, 53, 20, 9, 1, 199, 113, 89, 20, 9, 1, 199, 113,
-    216, 217, 20, 9, 1, 197, 125, 76, 20, 9, 1, 197, 125, 53, 20, 9, 1, 197,
-    125, 89, 20, 9, 1, 197, 125, 216, 217, 20, 9, 1, 195, 147, 76, 20, 9, 1,
-    195, 147, 53, 20, 9, 1, 195, 147, 89, 20, 9, 1, 195, 147, 216, 217, 20,
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-    1, 210, 40, 216, 217, 20, 9, 1, 235, 42, 76, 20, 9, 1, 235, 42, 53, 20,
-    9, 1, 235, 42, 89, 20, 9, 1, 235, 42, 216, 217, 20, 9, 1, 212, 88, 76,
-    20, 9, 1, 212, 88, 53, 20, 9, 1, 212, 88, 89, 20, 9, 1, 212, 88, 216,
-    217, 20, 9, 1, 199, 150, 76, 20, 9, 1, 199, 150, 53, 20, 9, 1, 199, 150,
-    89, 20, 9, 1, 199, 150, 216, 217, 20, 9, 1, 199, 148, 76, 20, 9, 1, 199,
-    148, 53, 20, 9, 1, 199, 148, 89, 20, 9, 1, 199, 148, 216, 217, 20, 9, 1,
-    237, 189, 76, 20, 9, 1, 237, 189, 53, 20, 9, 1, 238, 11, 76, 20, 9, 1,
-    238, 11, 53, 20, 9, 1, 235, 79, 76, 20, 9, 1, 235, 79, 53, 20, 9, 1, 237,
-    187, 76, 20, 9, 1, 237, 187, 53, 20, 9, 1, 223, 4, 76, 20, 9, 1, 223, 4,
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-    20, 9, 1, 222, 5, 53, 20, 9, 1, 222, 5, 89, 20, 9, 1, 222, 5, 216, 217,
-    20, 9, 1, 231, 228, 76, 20, 9, 1, 231, 228, 53, 20, 9, 1, 231, 228, 89,
-    20, 9, 1, 231, 228, 216, 217, 20, 9, 1, 230, 167, 76, 20, 9, 1, 230, 167,
-    53, 20, 9, 1, 230, 167, 89, 20, 9, 1, 230, 167, 216, 217, 20, 9, 1, 213,
-    248, 76, 20, 9, 1, 213, 248, 53, 20, 9, 1, 213, 248, 89, 20, 9, 1, 213,
-    248, 216, 217, 20, 9, 1, 213, 25, 231, 58, 76, 20, 9, 1, 213, 25, 231,
-    58, 53, 20, 9, 1, 206, 166, 76, 20, 9, 1, 206, 166, 53, 20, 9, 1, 206,
-    166, 89, 20, 9, 1, 206, 166, 216, 217, 20, 9, 1, 229, 211, 4, 99, 93, 76,
-    20, 9, 1, 229, 211, 4, 99, 93, 53, 20, 9, 1, 229, 211, 231, 1, 76, 20, 9,
-    1, 229, 211, 231, 1, 53, 20, 9, 1, 229, 211, 231, 1, 89, 20, 9, 1, 229,
-    211, 231, 1, 216, 217, 20, 9, 1, 229, 211, 236, 171, 76, 20, 9, 1, 229,
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-    20, 9, 1, 99, 249, 81, 4, 230, 58, 93, 76, 20, 9, 1, 99, 249, 81, 4, 230,
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-    105, 185, 60, 9, 16, 115, 185, 58, 9, 16, 115, 185, 60, 9, 16, 115, 185,
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-    1, 214, 71, 216, 217, 20, 9, 1, 126, 76, 20, 9, 1, 126, 53, 20, 9, 1,
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-    191, 226, 53, 20, 9, 1, 126, 4, 230, 58, 93, 76, 20, 9, 1, 195, 154, 76,
-    20, 9, 1, 195, 154, 53, 20, 9, 1, 221, 132, 211, 152, 76, 20, 9, 1, 221,
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-    235, 15, 89, 20, 9, 1, 235, 15, 216, 217, 20, 9, 1, 196, 137, 222, 26,
-    221, 132, 131, 217, 100, 89, 20, 9, 1, 196, 137, 222, 26, 221, 132, 131,
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-    99, 4, 230, 58, 93, 4, 131, 53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 252,
-    26, 76, 20, 9, 34, 99, 4, 230, 58, 93, 4, 252, 26, 53, 20, 9, 34, 99, 4,
-    230, 58, 93, 4, 193, 134, 76, 20, 9, 34, 99, 4, 230, 58, 93, 4, 193, 134,
-    53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 126, 76, 20, 9, 34, 99, 4, 230, 58,
-    93, 4, 126, 53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 211, 152, 76, 20, 9,
-    34, 99, 4, 230, 58, 93, 4, 211, 152, 53, 20, 9, 34, 99, 4, 230, 58, 93,
-    4, 191, 226, 76, 20, 9, 34, 99, 4, 230, 58, 93, 4, 191, 226, 53, 20, 9,
-    34, 99, 4, 230, 58, 93, 4, 235, 15, 76, 20, 9, 34, 99, 4, 230, 58, 93, 4,
-    235, 15, 53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 235, 15, 89, 20, 9, 34,
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-    196, 137, 221, 132, 99, 4, 230, 58, 93, 4, 131, 217, 100, 53, 20, 9, 34,
-    196, 137, 221, 132, 99, 4, 230, 58, 93, 4, 131, 217, 100, 89, 20, 9, 1,
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-    20, 9, 1, 233, 74, 99, 216, 217, 20, 9, 34, 99, 4, 230, 58, 93, 4, 223,
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-    58, 93, 4, 92, 76, 20, 9, 34, 99, 4, 230, 58, 93, 4, 131, 217, 100, 76,
-    20, 9, 34, 99, 4, 230, 58, 93, 4, 99, 76, 20, 9, 34, 248, 246, 4, 223, 7,
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-    76, 20, 9, 34, 248, 246, 4, 92, 76, 20, 9, 34, 248, 246, 4, 131, 217,
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-    76, 20, 9, 34, 199, 115, 4, 182, 76, 20, 9, 34, 199, 115, 4, 221, 211,
-    76, 20, 9, 34, 199, 115, 4, 92, 76, 20, 9, 34, 199, 115, 4, 131, 217,
-    100, 76, 20, 9, 34, 199, 115, 4, 99, 76, 20, 9, 34, 199, 30, 4, 223, 7,
-    76, 20, 9, 34, 199, 30, 4, 92, 76, 20, 9, 34, 199, 30, 4, 131, 217, 100,
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-    34, 223, 7, 4, 92, 76, 20, 9, 34, 182, 4, 223, 7, 76, 20, 9, 34, 182, 4,
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-    9, 34, 205, 47, 4, 92, 76, 20, 9, 34, 205, 193, 4, 182, 76, 20, 9, 34,
-    205, 193, 4, 92, 76, 20, 9, 34, 238, 27, 4, 223, 7, 76, 20, 9, 34, 238,
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-    4, 92, 76, 20, 9, 34, 199, 220, 4, 182, 76, 20, 9, 34, 199, 220, 4, 92,
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-    20, 9, 34, 251, 231, 4, 92, 76, 20, 9, 34, 231, 87, 4, 223, 7, 76, 20, 9,
-    34, 231, 87, 4, 92, 76, 20, 9, 34, 233, 47, 4, 223, 7, 76, 20, 9, 34,
-    233, 47, 4, 182, 76, 20, 9, 34, 233, 47, 4, 221, 211, 76, 20, 9, 34, 233,
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-    47, 4, 99, 76, 20, 9, 34, 208, 90, 4, 182, 76, 20, 9, 34, 208, 90, 4, 92,
-    76, 20, 9, 34, 208, 90, 4, 131, 217, 100, 76, 20, 9, 34, 208, 90, 4, 99,
-    76, 20, 9, 34, 222, 107, 4, 131, 76, 20, 9, 34, 222, 107, 4, 223, 7, 76,
-    20, 9, 34, 222, 107, 4, 182, 76, 20, 9, 34, 222, 107, 4, 221, 211, 76,
-    20, 9, 34, 222, 107, 4, 220, 36, 76, 20, 9, 34, 222, 107, 4, 92, 76, 20,
-    9, 34, 222, 107, 4, 131, 217, 100, 76, 20, 9, 34, 222, 107, 4, 99, 76,
-    20, 9, 34, 220, 36, 4, 223, 7, 76, 20, 9, 34, 220, 36, 4, 182, 76, 20, 9,
-    34, 220, 36, 4, 221, 211, 76, 20, 9, 34, 220, 36, 4, 92, 76, 20, 9, 34,
-    220, 36, 4, 131, 217, 100, 76, 20, 9, 34, 220, 36, 4, 99, 76, 20, 9, 34,
-    92, 4, 223, 7, 76, 20, 9, 34, 92, 4, 182, 76, 20, 9, 34, 92, 4, 221, 211,
-    76, 20, 9, 34, 92, 4, 92, 76, 20, 9, 34, 92, 4, 131, 217, 100, 76, 20, 9,
-    34, 92, 4, 99, 76, 20, 9, 34, 213, 25, 4, 223, 7, 76, 20, 9, 34, 213, 25,
-    4, 182, 76, 20, 9, 34, 213, 25, 4, 221, 211, 76, 20, 9, 34, 213, 25, 4,
-    92, 76, 20, 9, 34, 213, 25, 4, 131, 217, 100, 76, 20, 9, 34, 213, 25, 4,
-    99, 76, 20, 9, 34, 229, 211, 4, 223, 7, 76, 20, 9, 34, 229, 211, 4, 92,
-    76, 20, 9, 34, 229, 211, 4, 131, 217, 100, 76, 20, 9, 34, 229, 211, 4,
-    99, 76, 20, 9, 34, 99, 4, 223, 7, 76, 20, 9, 34, 99, 4, 182, 76, 20, 9,
-    34, 99, 4, 221, 211, 76, 20, 9, 34, 99, 4, 92, 76, 20, 9, 34, 99, 4, 131,
-    217, 100, 76, 20, 9, 34, 99, 4, 99, 76, 20, 9, 34, 199, 42, 4, 200, 182,
-    131, 76, 20, 9, 34, 207, 72, 4, 200, 182, 131, 76, 20, 9, 34, 131, 217,
-    100, 4, 200, 182, 131, 76, 20, 9, 34, 203, 156, 4, 237, 244, 76, 20, 9,
-    34, 203, 156, 4, 222, 51, 76, 20, 9, 34, 203, 156, 4, 233, 71, 76, 20, 9,
-    34, 203, 156, 4, 237, 246, 76, 20, 9, 34, 203, 156, 4, 222, 53, 76, 20,
-    9, 34, 203, 156, 4, 200, 182, 131, 76, 20, 9, 34, 99, 4, 230, 58, 93, 4,
-    207, 72, 53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 191, 114, 53, 20, 9, 34,
-    99, 4, 230, 58, 93, 4, 92, 53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 213, 25,
-    53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 131, 217, 100, 53, 20, 9, 34, 99,
-    4, 230, 58, 93, 4, 99, 53, 20, 9, 34, 248, 246, 4, 207, 72, 53, 20, 9,
-    34, 248, 246, 4, 191, 114, 53, 20, 9, 34, 248, 246, 4, 92, 53, 20, 9, 34,
-    248, 246, 4, 213, 25, 53, 20, 9, 34, 248, 246, 4, 131, 217, 100, 53, 20,
-    9, 34, 248, 246, 4, 99, 53, 20, 9, 34, 199, 115, 4, 207, 72, 53, 20, 9,
-    34, 199, 115, 4, 191, 114, 53, 20, 9, 34, 199, 115, 4, 92, 53, 20, 9, 34,
-    199, 115, 4, 213, 25, 53, 20, 9, 34, 199, 115, 4, 131, 217, 100, 53, 20,
-    9, 34, 199, 115, 4, 99, 53, 20, 9, 34, 199, 30, 4, 207, 72, 53, 20, 9,
-    34, 199, 30, 4, 191, 114, 53, 20, 9, 34, 199, 30, 4, 92, 53, 20, 9, 34,
-    199, 30, 4, 213, 25, 53, 20, 9, 34, 199, 30, 4, 131, 217, 100, 53, 20, 9,
-    34, 199, 30, 4, 99, 53, 20, 9, 34, 233, 47, 4, 131, 217, 100, 53, 20, 9,
-    34, 233, 47, 4, 99, 53, 20, 9, 34, 208, 90, 4, 131, 217, 100, 53, 20, 9,
-    34, 208, 90, 4, 99, 53, 20, 9, 34, 222, 107, 4, 131, 53, 20, 9, 34, 222,
-    107, 4, 220, 36, 53, 20, 9, 34, 222, 107, 4, 92, 53, 20, 9, 34, 222, 107,
-    4, 131, 217, 100, 53, 20, 9, 34, 222, 107, 4, 99, 53, 20, 9, 34, 220, 36,
-    4, 92, 53, 20, 9, 34, 220, 36, 4, 131, 217, 100, 53, 20, 9, 34, 220, 36,
-    4, 99, 53, 20, 9, 34, 92, 4, 131, 53, 20, 9, 34, 92, 4, 92, 53, 20, 9,
-    34, 213, 25, 4, 207, 72, 53, 20, 9, 34, 213, 25, 4, 191, 114, 53, 20, 9,
-    34, 213, 25, 4, 92, 53, 20, 9, 34, 213, 25, 4, 213, 25, 53, 20, 9, 34,
-    213, 25, 4, 131, 217, 100, 53, 20, 9, 34, 213, 25, 4, 99, 53, 20, 9, 34,
-    131, 217, 100, 4, 200, 182, 131, 53, 20, 9, 34, 99, 4, 207, 72, 53, 20,
-    9, 34, 99, 4, 191, 114, 53, 20, 9, 34, 99, 4, 92, 53, 20, 9, 34, 99, 4,
-    213, 25, 53, 20, 9, 34, 99, 4, 131, 217, 100, 53, 20, 9, 34, 99, 4, 99,
-    53, 20, 9, 34, 99, 4, 230, 58, 93, 4, 223, 7, 89, 20, 9, 34, 99, 4, 230,
-    58, 93, 4, 182, 89, 20, 9, 34, 99, 4, 230, 58, 93, 4, 221, 211, 89, 20,
-    9, 34, 99, 4, 230, 58, 93, 4, 92, 89, 20, 9, 34, 99, 4, 230, 58, 93, 4,
-    229, 211, 89, 20, 9, 34, 248, 246, 4, 223, 7, 89, 20, 9, 34, 248, 246, 4,
-    182, 89, 20, 9, 34, 248, 246, 4, 221, 211, 89, 20, 9, 34, 248, 246, 4,
-    92, 89, 20, 9, 34, 248, 246, 4, 229, 211, 89, 20, 9, 34, 199, 115, 4,
-    223, 7, 89, 20, 9, 34, 199, 115, 4, 182, 89, 20, 9, 34, 199, 115, 4, 221,
-    211, 89, 20, 9, 34, 199, 115, 4, 92, 89, 20, 9, 34, 199, 115, 4, 229,
-    211, 89, 20, 9, 34, 199, 30, 4, 92, 89, 20, 9, 34, 223, 7, 4, 182, 89,
-    20, 9, 34, 223, 7, 4, 92, 89, 20, 9, 34, 182, 4, 223, 7, 89, 20, 9, 34,
-    182, 4, 92, 89, 20, 9, 34, 221, 211, 4, 223, 7, 89, 20, 9, 34, 221, 211,
-    4, 92, 89, 20, 9, 34, 205, 47, 4, 223, 7, 89, 20, 9, 34, 205, 47, 4, 182,
-    89, 20, 9, 34, 205, 47, 4, 221, 211, 89, 20, 9, 34, 205, 47, 4, 92, 89,
-    20, 9, 34, 205, 193, 4, 182, 89, 20, 9, 34, 205, 193, 4, 221, 211, 89,
-    20, 9, 34, 205, 193, 4, 92, 89, 20, 9, 34, 238, 27, 4, 223, 7, 89, 20, 9,
-    34, 238, 27, 4, 182, 89, 20, 9, 34, 238, 27, 4, 221, 211, 89, 20, 9, 34,
-    238, 27, 4, 92, 89, 20, 9, 34, 199, 220, 4, 182, 89, 20, 9, 34, 191, 117,
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-    140, 35, 252, 50, 250, 165, 232, 226, 189, 35, 252, 50, 250, 165, 233,
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-    252, 50, 250, 165, 91, 228, 141, 199, 203, 35, 252, 50, 250, 165, 232,
-    226, 228, 141, 199, 203, 35, 252, 50, 250, 165, 91, 198, 230, 199, 203,
-    35, 252, 50, 250, 165, 232, 226, 198, 230, 199, 203, 35, 252, 50, 250,
-    165, 232, 226, 201, 94, 35, 252, 50, 250, 165, 199, 96, 201, 94, 35, 252,
-    50, 250, 165, 233, 16, 201, 94, 35, 252, 50, 250, 165, 91, 228, 141, 201,
-    94, 35, 252, 50, 250, 165, 232, 226, 228, 141, 201, 94, 35, 252, 50, 250,
-    165, 91, 198, 230, 201, 94, 35, 252, 50, 250, 165, 199, 96, 198, 230,
-    201, 94, 35, 252, 50, 250, 165, 233, 16, 198, 230, 201, 94, 35, 252, 50,
-    250, 165, 199, 96, 216, 15, 35, 252, 50, 229, 194, 91, 209, 92, 35, 252,
-    50, 199, 17, 107, 35, 252, 50, 229, 190, 107, 35, 252, 50, 234, 51, 109,
-    35, 252, 50, 199, 17, 109, 35, 252, 50, 238, 132, 105, 235, 114, 35, 252,
-    50, 234, 51, 105, 235, 114, 35, 252, 50, 197, 216, 149, 35, 252, 50, 197,
-    216, 199, 95, 35, 252, 50, 197, 216, 199, 96, 251, 157, 20, 35, 252, 50,
-    229, 190, 199, 95, 35, 252, 50, 216, 167, 199, 95, 35, 252, 50, 199, 17,
-    199, 95, 35, 252, 50, 199, 17, 198, 249, 35, 252, 50, 197, 216, 233, 15,
-    35, 252, 50, 197, 216, 233, 16, 251, 157, 20, 35, 252, 50, 229, 190, 233,
-    15, 35, 252, 50, 199, 17, 233, 15, 35, 252, 50, 199, 17, 91, 228, 140,
-    35, 252, 50, 199, 17, 115, 228, 140, 35, 252, 50, 234, 51, 232, 226, 228,
-    140, 35, 252, 50, 197, 216, 232, 226, 228, 140, 35, 252, 50, 199, 17,
-    232, 226, 228, 140, 35, 252, 50, 247, 82, 232, 226, 228, 140, 35, 252,
-    50, 214, 199, 232, 226, 228, 140, 35, 252, 50, 199, 17, 91, 189, 35, 252,
-    50, 199, 17, 232, 226, 189, 35, 252, 50, 237, 109, 232, 226, 216, 15, 35,
-    252, 50, 201, 47, 233, 16, 216, 15, 35, 91, 132, 56, 35, 91, 132, 3, 251,
-    157, 20, 35, 105, 198, 254, 56, 35, 115, 208, 21, 56, 35, 192, 78, 56,
-    35, 199, 204, 56, 35, 235, 116, 56, 35, 211, 170, 56, 35, 105, 211, 169,
-    56, 35, 115, 211, 169, 56, 35, 232, 128, 211, 169, 56, 35, 232, 226, 211,
-    169, 56, 35, 216, 161, 56, 35, 220, 151, 249, 75, 56, 35, 219, 85, 56,
-    35, 211, 16, 56, 35, 192, 211, 56, 35, 250, 226, 56, 35, 250, 243, 56,
-    35, 230, 220, 56, 35, 197, 171, 249, 75, 56, 35, 191, 78, 56, 35, 91,
-    208, 23, 56, 35, 202, 162, 56, 35, 223, 143, 56, 213, 32, 56, 206, 136,
-    203, 237, 56, 206, 136, 196, 106, 56, 206, 136, 204, 17, 56, 206, 136,
-    203, 175, 56, 206, 136, 236, 250, 203, 175, 56, 206, 136, 202, 186, 56,
-    206, 136, 237, 104, 56, 206, 136, 208, 5, 56, 206, 136, 203, 254, 56,
-    206, 136, 235, 67, 56, 206, 136, 250, 220, 56, 206, 136, 247, 17, 56,
-    250, 211, 113, 35, 16, 199, 167, 207, 3, 209, 223, 236, 227, 3, 210, 51,
-    209, 223, 236, 227, 3, 209, 84, 229, 235, 209, 223, 236, 227, 3, 199,
-    170, 229, 235, 209, 223, 236, 227, 3, 247, 105, 209, 223, 236, 227, 3,
-    243, 86, 209, 223, 236, 227, 3, 193, 35, 209, 223, 236, 227, 3, 229, 200,
-    209, 223, 236, 227, 3, 231, 188, 209, 223, 236, 227, 3, 198, 184, 209,
-    223, 236, 227, 3, 57, 209, 223, 236, 227, 3, 248, 69, 209, 223, 236, 227,
-    3, 203, 78, 209, 223, 236, 227, 3, 242, 206, 209, 223, 236, 227, 3, 217,
-    89, 209, 223, 236, 227, 3, 217, 26, 209, 223, 236, 227, 3, 205, 108, 209,
-    223, 236, 227, 3, 219, 141, 209, 223, 236, 227, 3, 248, 92, 209, 223,
-    236, 227, 3, 247, 89, 209, 101, 209, 223, 236, 227, 3, 236, 156, 209,
-    223, 236, 227, 3, 242, 80, 209, 223, 236, 227, 3, 202, 83, 209, 223, 236,
-    227, 3, 242, 81, 209, 223, 236, 227, 3, 248, 254, 209, 223, 236, 227, 3,
-    203, 65, 209, 223, 236, 227, 3, 228, 187, 209, 223, 236, 227, 3, 229,
-    148, 209, 223, 236, 227, 3, 247, 245, 219, 212, 209, 223, 236, 227, 3,
-    247, 78, 209, 223, 236, 227, 3, 207, 142, 209, 223, 236, 227, 3, 234,
-    214, 209, 223, 236, 227, 3, 235, 124, 209, 223, 236, 227, 3, 197, 72,
-    209, 223, 236, 227, 3, 249, 1, 209, 223, 236, 227, 3, 209, 102, 197, 254,
-    209, 223, 236, 227, 3, 195, 47, 209, 223, 236, 227, 3, 210, 132, 209,
-    223, 236, 227, 3, 206, 125, 209, 223, 236, 227, 3, 219, 125, 209, 223,
-    236, 227, 3, 210, 248, 249, 146, 209, 223, 236, 227, 3, 232, 182, 209,
-    223, 236, 227, 3, 230, 212, 209, 223, 236, 227, 3, 201, 50, 209, 223,
-    236, 227, 3, 2, 250, 132, 209, 223, 236, 227, 3, 193, 135, 249, 97, 209,
-    223, 236, 227, 3, 33, 211, 172, 106, 218, 181, 1, 65, 218, 181, 1, 71,
-    218, 181, 1, 250, 120, 218, 181, 1, 248, 204, 218, 181, 1, 232, 51, 218,
-    181, 1, 238, 127, 218, 181, 1, 68, 218, 181, 1, 193, 224, 218, 181, 1,
-    191, 166, 218, 181, 1, 199, 51, 218, 181, 1, 223, 35, 218, 181, 1, 222,
-    152, 218, 181, 1, 208, 104, 218, 181, 1, 172, 218, 181, 1, 218, 168, 218,
-    181, 1, 215, 61, 218, 181, 1, 216, 17, 218, 181, 1, 213, 80, 218, 181, 1,
-    66, 218, 181, 1, 210, 236, 218, 181, 1, 221, 102, 218, 181, 1, 146, 218,
-    181, 1, 206, 8, 218, 181, 1, 200, 43, 218, 181, 1, 197, 135, 218, 181, 1,
-    251, 132, 218, 181, 1, 234, 103, 218, 181, 1, 230, 116, 218, 181, 1, 192,
-    235, 247, 95, 1, 65, 247, 95, 1, 210, 222, 247, 95, 1, 238, 127, 247, 95,
-    1, 172, 247, 95, 1, 196, 28, 247, 95, 1, 146, 247, 95, 1, 219, 242, 247,
-    95, 1, 254, 215, 247, 95, 1, 208, 104, 247, 95, 1, 250, 120, 247, 95, 1,
-    218, 168, 247, 95, 1, 74, 247, 95, 1, 238, 34, 247, 95, 1, 200, 43, 247,
-    95, 1, 203, 167, 247, 95, 1, 203, 166, 247, 95, 1, 206, 8, 247, 95, 1,
-    247, 192, 247, 95, 1, 66, 247, 95, 1, 213, 80, 247, 95, 1, 192, 235, 247,
-    95, 1, 215, 61, 247, 95, 1, 197, 134, 247, 95, 1, 210, 236, 247, 95, 1,
-    201, 178, 247, 95, 1, 68, 247, 95, 1, 71, 247, 95, 1, 196, 25, 247, 95,
-    1, 222, 152, 247, 95, 1, 222, 143, 247, 95, 1, 214, 164, 247, 95, 1, 196,
-    30, 247, 95, 1, 232, 51, 247, 95, 1, 231, 242, 247, 95, 1, 201, 118, 247,
-    95, 1, 201, 117, 247, 95, 1, 214, 70, 247, 95, 1, 223, 199, 247, 95, 1,
-    247, 191, 247, 95, 1, 197, 135, 247, 95, 1, 196, 27, 247, 95, 1, 206,
-    110, 247, 95, 1, 217, 16, 247, 95, 1, 217, 15, 247, 95, 1, 217, 14, 247,
-    95, 1, 217, 13, 247, 95, 1, 219, 241, 247, 95, 1, 234, 218, 247, 95, 1,
-    196, 26, 94, 234, 54, 198, 229, 77, 94, 234, 54, 17, 107, 94, 234, 54,
-    17, 109, 94, 234, 54, 17, 138, 94, 234, 54, 17, 134, 94, 234, 54, 17,
-    149, 94, 234, 54, 17, 169, 94, 234, 54, 17, 175, 94, 234, 54, 17, 171,
-    94, 234, 54, 17, 178, 94, 234, 54, 31, 199, 95, 94, 234, 54, 31, 197, 32,
-    94, 234, 54, 31, 198, 249, 94, 234, 54, 31, 232, 135, 94, 234, 54, 31,
-    233, 15, 94, 234, 54, 31, 202, 120, 94, 234, 54, 31, 203, 241, 94, 234,
-    54, 31, 234, 153, 94, 234, 54, 31, 213, 169, 94, 234, 54, 31, 91, 228,
-    140, 94, 234, 54, 31, 105, 228, 140, 94, 234, 54, 31, 115, 228, 140, 94,
-    234, 54, 31, 232, 128, 228, 140, 94, 234, 54, 31, 232, 226, 228, 140, 94,
-    234, 54, 31, 202, 136, 228, 140, 94, 234, 54, 31, 203, 247, 228, 140, 94,
-    234, 54, 31, 234, 164, 228, 140, 94, 234, 54, 31, 213, 175, 228, 140, 39,
-    43, 1, 65, 39, 43, 1, 249, 17, 39, 43, 1, 222, 22, 39, 43, 1, 237, 146,
-    39, 43, 1, 71, 39, 43, 1, 195, 153, 39, 43, 1, 191, 87, 39, 43, 1, 229,
-    245, 39, 43, 1, 199, 33, 39, 43, 1, 68, 39, 43, 1, 155, 39, 43, 1, 234,
-    140, 39, 43, 1, 234, 114, 39, 43, 1, 234, 103, 39, 43, 1, 234, 12, 39,
-    43, 1, 74, 39, 43, 1, 210, 63, 39, 43, 1, 203, 113, 39, 43, 1, 220, 232,
-    39, 43, 1, 234, 34, 39, 43, 1, 234, 22, 39, 43, 1, 199, 145, 39, 43, 1,
-    66, 39, 43, 1, 234, 143, 39, 43, 1, 209, 214, 39, 43, 1, 221, 197, 39,
-    43, 1, 234, 181, 39, 43, 1, 234, 24, 39, 43, 1, 243, 127, 39, 43, 1, 223,
-    199, 39, 43, 1, 196, 30, 39, 43, 1, 234, 5, 39, 43, 212, 134, 107, 39,
-    43, 212, 134, 149, 39, 43, 212, 134, 199, 95, 39, 43, 212, 134, 233, 15,
-    39, 43, 1, 192, 80, 39, 43, 1, 213, 16, 197, 161, 39, 43, 1, 202, 0, 197,
-    161, 230, 231, 1, 251, 239, 230, 231, 1, 249, 117, 230, 231, 1, 231, 50,
-    230, 231, 1, 238, 13, 230, 231, 1, 251, 234, 230, 231, 1, 208, 87, 230,
-    231, 1, 223, 48, 230, 231, 1, 230, 83, 230, 231, 1, 198, 243, 230, 231,
-    1, 234, 151, 230, 231, 1, 220, 189, 230, 231, 1, 220, 100, 230, 231, 1,
-    217, 80, 230, 231, 1, 214, 201, 230, 231, 1, 223, 1, 230, 231, 1, 196,
-    48, 230, 231, 1, 210, 195, 230, 231, 1, 213, 169, 230, 231, 1, 207, 155,
-    230, 231, 1, 205, 112, 230, 231, 1, 199, 111, 230, 231, 1, 193, 59, 230,
-    231, 1, 233, 89, 230, 231, 1, 223, 203, 230, 231, 1, 228, 123, 230, 231,
-    1, 211, 29, 230, 231, 1, 213, 175, 228, 140, 39, 210, 2, 1, 251, 132, 39,
-    210, 2, 1, 247, 230, 39, 210, 2, 1, 231, 224, 39, 210, 2, 1, 236, 160,
-    39, 210, 2, 1, 71, 39, 210, 2, 1, 191, 53, 39, 210, 2, 1, 235, 27, 39,
-    210, 2, 1, 191, 95, 39, 210, 2, 1, 235, 25, 39, 210, 2, 1, 68, 39, 210,
-    2, 1, 221, 50, 39, 210, 2, 1, 219, 208, 39, 210, 2, 1, 216, 184, 39, 210,
-    2, 1, 214, 100, 39, 210, 2, 1, 195, 7, 39, 210, 2, 1, 210, 48, 39, 210,
-    2, 1, 207, 70, 39, 210, 2, 1, 202, 193, 39, 210, 2, 1, 199, 217, 39, 210,
-    2, 1, 66, 39, 210, 2, 1, 243, 106, 39, 210, 2, 1, 203, 47, 39, 210, 2, 1,
-    203, 115, 39, 210, 2, 1, 191, 227, 39, 210, 2, 1, 192, 58, 39, 210, 2, 1,
-    74, 39, 210, 2, 1, 211, 87, 39, 210, 2, 1, 234, 181, 39, 210, 2, 1, 140,
-    39, 210, 2, 1, 197, 145, 39, 210, 2, 1, 195, 140, 39, 210, 2, 1, 192, 62,
-    39, 210, 2, 1, 192, 60, 39, 210, 2, 1, 192, 95, 39, 210, 2, 1, 223, 226,
-    39, 210, 2, 1, 191, 225, 39, 210, 2, 1, 170, 39, 210, 2, 1, 228, 35, 33,
-    39, 210, 2, 1, 251, 132, 33, 39, 210, 2, 1, 236, 160, 33, 39, 210, 2, 1,
-    191, 95, 33, 39, 210, 2, 1, 214, 100, 33, 39, 210, 2, 1, 202, 193, 196,
-    142, 1, 251, 164, 196, 142, 1, 248, 212, 196, 142, 1, 231, 212, 196, 142,
-    1, 221, 215, 196, 142, 1, 237, 106, 196, 142, 1, 229, 23, 196, 142, 1,
-    193, 48, 196, 142, 1, 191, 76, 196, 142, 1, 228, 179, 196, 142, 1, 199,
-    73, 196, 142, 1, 191, 250, 196, 142, 1, 222, 106, 196, 142, 1, 203, 69,
-    196, 142, 1, 220, 31, 196, 142, 1, 216, 193, 196, 142, 1, 237, 64, 196,
-    142, 1, 212, 130, 196, 142, 1, 190, 251, 196, 142, 1, 205, 147, 196, 142,
-    1, 251, 230, 196, 142, 1, 208, 165, 196, 142, 1, 205, 191, 196, 142, 1,
-    208, 38, 196, 142, 1, 207, 133, 196, 142, 1, 199, 37, 196, 142, 1, 231,
-    86, 196, 142, 1, 159, 196, 142, 1, 68, 196, 142, 1, 66, 196, 142, 1, 201,
-    129, 196, 142, 193, 23, 236, 205, 39, 209, 252, 3, 65, 39, 209, 252, 3,
-    68, 39, 209, 252, 3, 66, 39, 209, 252, 3, 155, 39, 209, 252, 3, 220, 232,
-    39, 209, 252, 3, 231, 240, 39, 209, 252, 3, 230, 179, 39, 209, 252, 3,
-    192, 220, 39, 209, 252, 3, 247, 160, 39, 209, 252, 3, 223, 32, 39, 209,
-    252, 3, 222, 244, 39, 209, 252, 3, 190, 190, 39, 209, 252, 3, 197, 94,
-    39, 209, 252, 3, 238, 32, 39, 209, 252, 3, 237, 44, 39, 209, 252, 3, 235,
-    89, 39, 209, 252, 3, 199, 49, 39, 209, 252, 3, 168, 39, 209, 252, 3, 249,
-    153, 39, 209, 252, 3, 233, 109, 39, 209, 252, 3, 180, 39, 209, 252, 3,
-    212, 178, 39, 209, 252, 3, 174, 39, 209, 252, 3, 216, 100, 39, 209, 252,
-    3, 215, 155, 39, 209, 252, 3, 170, 39, 209, 252, 3, 195, 188, 39, 209,
-    252, 3, 195, 69, 39, 209, 252, 3, 165, 39, 209, 252, 3, 206, 68, 39, 209,
-    252, 3, 173, 39, 209, 252, 3, 188, 39, 209, 252, 3, 191, 123, 39, 209,
-    252, 3, 203, 165, 39, 209, 252, 3, 201, 175, 39, 209, 252, 3, 140, 39,
-    209, 252, 3, 250, 157, 39, 209, 252, 3, 250, 156, 39, 209, 252, 3, 250,
-    155, 39, 209, 252, 3, 192, 189, 39, 209, 252, 3, 238, 9, 39, 209, 252, 3,
-    238, 8, 39, 209, 252, 3, 249, 128, 39, 209, 252, 3, 247, 212, 39, 209,
-    252, 193, 23, 236, 205, 39, 209, 252, 31, 107, 39, 209, 252, 31, 109, 39,
-    209, 252, 31, 199, 95, 39, 209, 252, 31, 197, 32, 39, 209, 252, 31, 228,
-    140, 237, 84, 6, 1, 179, 68, 237, 84, 6, 1, 179, 71, 237, 84, 6, 1, 179,
-    65, 237, 84, 6, 1, 179, 251, 245, 237, 84, 6, 1, 179, 74, 237, 84, 6, 1,
-    179, 211, 87, 237, 84, 6, 1, 203, 40, 68, 237, 84, 6, 1, 203, 40, 71,
-    237, 84, 6, 1, 203, 40, 65, 237, 84, 6, 1, 203, 40, 251, 245, 237, 84, 6,
-    1, 203, 40, 74, 237, 84, 6, 1, 203, 40, 211, 87, 237, 84, 6, 1, 250, 131,
-    237, 84, 6, 1, 210, 250, 237, 84, 6, 1, 193, 0, 237, 84, 6, 1, 192, 77,
-    237, 84, 6, 1, 230, 116, 237, 84, 6, 1, 210, 49, 237, 84, 6, 1, 249, 1,
-    237, 84, 6, 1, 199, 121, 237, 84, 6, 1, 237, 131, 237, 84, 6, 1, 243,
-    123, 237, 84, 6, 1, 223, 8, 237, 84, 6, 1, 222, 29, 237, 84, 6, 1, 231,
-    186, 237, 84, 6, 1, 234, 181, 237, 84, 6, 1, 195, 148, 237, 84, 6, 1,
-    233, 248, 237, 84, 6, 1, 199, 31, 237, 84, 6, 1, 234, 22, 237, 84, 6, 1,
-    191, 84, 237, 84, 6, 1, 234, 12, 237, 84, 6, 1, 191, 61, 237, 84, 6, 1,
-    234, 34, 237, 84, 6, 1, 234, 140, 237, 84, 6, 1, 234, 114, 237, 84, 6, 1,
-    234, 103, 237, 84, 6, 1, 234, 88, 237, 84, 6, 1, 211, 133, 237, 84, 6, 1,
-    233, 224, 237, 84, 2, 1, 179, 68, 237, 84, 2, 1, 179, 71, 237, 84, 2, 1,
-    179, 65, 237, 84, 2, 1, 179, 251, 245, 237, 84, 2, 1, 179, 74, 237, 84,
-    2, 1, 179, 211, 87, 237, 84, 2, 1, 203, 40, 68, 237, 84, 2, 1, 203, 40,
-    71, 237, 84, 2, 1, 203, 40, 65, 237, 84, 2, 1, 203, 40, 251, 245, 237,
-    84, 2, 1, 203, 40, 74, 237, 84, 2, 1, 203, 40, 211, 87, 237, 84, 2, 1,
-    250, 131, 237, 84, 2, 1, 210, 250, 237, 84, 2, 1, 193, 0, 237, 84, 2, 1,
-    192, 77, 237, 84, 2, 1, 230, 116, 237, 84, 2, 1, 210, 49, 237, 84, 2, 1,
-    249, 1, 237, 84, 2, 1, 199, 121, 237, 84, 2, 1, 237, 131, 237, 84, 2, 1,
-    243, 123, 237, 84, 2, 1, 223, 8, 237, 84, 2, 1, 222, 29, 237, 84, 2, 1,
-    231, 186, 237, 84, 2, 1, 234, 181, 237, 84, 2, 1, 195, 148, 237, 84, 2,
-    1, 233, 248, 237, 84, 2, 1, 199, 31, 237, 84, 2, 1, 234, 22, 237, 84, 2,
-    1, 191, 84, 237, 84, 2, 1, 234, 12, 237, 84, 2, 1, 191, 61, 237, 84, 2,
-    1, 234, 34, 237, 84, 2, 1, 234, 140, 237, 84, 2, 1, 234, 114, 237, 84, 2,
-    1, 234, 103, 237, 84, 2, 1, 234, 88, 237, 84, 2, 1, 211, 133, 237, 84, 2,
-    1, 233, 224, 203, 120, 1, 210, 45, 203, 120, 1, 198, 40, 203, 120, 1,
-    221, 154, 203, 120, 1, 233, 52, 203, 120, 1, 199, 6, 203, 120, 1, 202,
-    46, 203, 120, 1, 200, 172, 203, 120, 1, 243, 40, 203, 120, 1, 192, 79,
-    203, 120, 1, 228, 137, 203, 120, 1, 248, 187, 203, 120, 1, 237, 145, 203,
-    120, 1, 231, 226, 203, 120, 1, 195, 2, 203, 120, 1, 199, 12, 203, 120, 1,
-    191, 4, 203, 120, 1, 216, 227, 203, 120, 1, 222, 180, 203, 120, 1, 193,
-    39, 203, 120, 1, 230, 93, 203, 120, 1, 219, 25, 203, 120, 1, 216, 45,
-    203, 120, 1, 223, 206, 203, 120, 1, 234, 179, 203, 120, 1, 250, 209, 203,
-    120, 1, 252, 30, 203, 120, 1, 211, 104, 203, 120, 1, 193, 26, 203, 120,
-    1, 211, 14, 203, 120, 1, 251, 245, 203, 120, 1, 206, 153, 203, 120, 1,
-    212, 130, 203, 120, 1, 234, 200, 203, 120, 1, 251, 250, 203, 120, 1, 228,
-    26, 203, 120, 1, 196, 77, 203, 120, 1, 211, 180, 203, 120, 1, 211, 79,
-    203, 120, 1, 211, 131, 203, 120, 1, 250, 137, 203, 120, 1, 251, 9, 203,
-    120, 1, 211, 56, 203, 120, 1, 251, 225, 203, 120, 1, 234, 26, 203, 120,
-    1, 250, 240, 203, 120, 1, 234, 211, 203, 120, 1, 228, 34, 203, 120, 1,
-    192, 41, 211, 33, 1, 251, 192, 211, 33, 1, 249, 153, 211, 33, 1, 190,
-    190, 211, 33, 1, 223, 32, 211, 33, 1, 192, 220, 211, 33, 1, 221, 215,
-    211, 33, 1, 237, 130, 211, 33, 1, 165, 211, 33, 1, 188, 211, 33, 1, 203,
-    75, 211, 33, 1, 237, 68, 211, 33, 1, 247, 67, 211, 33, 1, 231, 240, 211,
-    33, 1, 233, 109, 211, 33, 1, 208, 94, 211, 33, 1, 222, 123, 211, 33, 1,
-    220, 121, 211, 33, 1, 216, 59, 211, 33, 1, 212, 114, 211, 33, 1, 193,
-    133, 211, 33, 1, 140, 211, 33, 1, 170, 211, 33, 1, 65, 211, 33, 1, 71,
-    211, 33, 1, 68, 211, 33, 1, 74, 211, 33, 1, 66, 211, 33, 1, 252, 206,
-    211, 33, 1, 234, 188, 211, 33, 1, 211, 87, 211, 33, 17, 191, 77, 211, 33,
-    17, 107, 211, 33, 17, 109, 211, 33, 17, 138, 211, 33, 17, 134, 211, 33,
-    17, 149, 211, 33, 17, 169, 211, 33, 17, 175, 211, 33, 17, 171, 211, 33,
-    17, 178, 211, 35, 6, 1, 65, 211, 35, 6, 1, 251, 236, 211, 35, 6, 1, 251,
-    230, 211, 35, 6, 1, 251, 245, 211, 35, 6, 1, 248, 56, 211, 35, 6, 1, 247,
-    1, 211, 35, 6, 1, 234, 172, 211, 35, 6, 1, 71, 211, 35, 6, 1, 234, 152,
-    211, 35, 6, 1, 140, 211, 35, 6, 1, 228, 93, 211, 35, 6, 1, 68, 211, 35,
-    6, 1, 155, 211, 35, 6, 1, 234, 171, 211, 35, 6, 1, 220, 153, 211, 35, 6,
-    1, 173, 211, 35, 6, 1, 174, 211, 35, 6, 1, 180, 211, 35, 6, 1, 74, 211,
-    35, 6, 1, 211, 130, 211, 35, 6, 1, 168, 211, 35, 6, 1, 234, 170, 211, 35,
-    6, 1, 188, 211, 35, 6, 1, 203, 165, 211, 35, 6, 1, 190, 190, 211, 35, 6,
-    1, 234, 169, 211, 35, 6, 1, 197, 168, 211, 35, 6, 1, 234, 168, 211, 35,
-    6, 1, 197, 157, 211, 35, 6, 1, 237, 68, 211, 35, 6, 1, 66, 211, 35, 6, 1,
-    193, 190, 211, 35, 6, 1, 221, 215, 211, 35, 6, 1, 231, 91, 211, 35, 6, 1,
-    191, 123, 211, 35, 6, 1, 191, 71, 211, 35, 2, 1, 65, 211, 35, 2, 1, 251,
-    236, 211, 35, 2, 1, 251, 230, 211, 35, 2, 1, 251, 245, 211, 35, 2, 1,
-    248, 56, 211, 35, 2, 1, 247, 1, 211, 35, 2, 1, 234, 172, 211, 35, 2, 1,
-    71, 211, 35, 2, 1, 234, 152, 211, 35, 2, 1, 140, 211, 35, 2, 1, 228, 93,
-    211, 35, 2, 1, 68, 211, 35, 2, 1, 155, 211, 35, 2, 1, 234, 171, 211, 35,
-    2, 1, 220, 153, 211, 35, 2, 1, 173, 211, 35, 2, 1, 174, 211, 35, 2, 1,
-    180, 211, 35, 2, 1, 74, 211, 35, 2, 1, 211, 130, 211, 35, 2, 1, 168, 211,
-    35, 2, 1, 234, 170, 211, 35, 2, 1, 188, 211, 35, 2, 1, 203, 165, 211, 35,
-    2, 1, 190, 190, 211, 35, 2, 1, 234, 169, 211, 35, 2, 1, 197, 168, 211,
-    35, 2, 1, 234, 168, 211, 35, 2, 1, 197, 157, 211, 35, 2, 1, 237, 68, 211,
-    35, 2, 1, 66, 211, 35, 2, 1, 193, 190, 211, 35, 2, 1, 221, 215, 211, 35,
-    2, 1, 231, 91, 211, 35, 2, 1, 191, 123, 211, 35, 2, 1, 191, 71, 234, 136,
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-    234, 136, 1, 237, 146, 234, 136, 1, 214, 154, 234, 136, 1, 237, 59, 234,
-    136, 1, 234, 166, 234, 136, 1, 71, 234, 136, 1, 233, 59, 234, 136, 1,
-    231, 165, 234, 136, 1, 231, 20, 234, 136, 1, 229, 245, 234, 136, 1, 68,
-    234, 136, 1, 223, 10, 234, 136, 1, 222, 22, 234, 136, 1, 219, 238, 234,
-    136, 1, 219, 68, 234, 136, 1, 216, 232, 234, 136, 1, 214, 121, 234, 136,
-    1, 180, 234, 136, 1, 213, 150, 234, 136, 1, 74, 234, 136, 1, 210, 63,
-    234, 136, 1, 208, 75, 234, 136, 1, 207, 113, 234, 136, 1, 206, 104, 234,
-    136, 1, 205, 68, 234, 136, 1, 203, 113, 234, 136, 1, 199, 145, 234, 136,
-    1, 199, 33, 234, 136, 1, 66, 234, 136, 1, 195, 153, 234, 136, 1, 192,
-    214, 234, 136, 1, 192, 159, 234, 136, 1, 191, 87, 234, 136, 1, 191, 62,
-    234, 136, 1, 231, 77, 234, 136, 1, 231, 83, 234, 136, 1, 221, 197, 247,
-    75, 251, 193, 1, 251, 159, 247, 75, 251, 193, 1, 248, 214, 247, 75, 251,
-    193, 1, 231, 40, 247, 75, 251, 193, 1, 237, 211, 247, 75, 251, 193, 1,
-    234, 199, 247, 75, 251, 193, 1, 191, 98, 247, 75, 251, 193, 1, 233, 184,
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-    251, 193, 1, 247, 1, 247, 75, 251, 193, 1, 191, 236, 247, 75, 251, 193,
-    1, 191, 71, 247, 75, 251, 193, 1, 223, 76, 247, 75, 251, 193, 1, 203,
-    165, 247, 75, 251, 193, 1, 220, 24, 247, 75, 251, 193, 1, 223, 89, 247,
-    75, 251, 193, 1, 192, 210, 247, 75, 251, 193, 1, 235, 43, 247, 75, 251,
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-    247, 75, 251, 193, 1, 208, 76, 247, 75, 251, 193, 1, 251, 67, 247, 75,
-    251, 193, 1, 243, 57, 247, 75, 251, 193, 1, 243, 95, 247, 75, 251, 193,
-    1, 238, 140, 247, 75, 251, 193, 1, 217, 68, 247, 75, 251, 193, 1, 208,
-    81, 247, 75, 251, 193, 1, 212, 252, 247, 75, 251, 193, 1, 235, 20, 247,
-    75, 251, 193, 1, 203, 147, 247, 75, 251, 193, 1, 223, 11, 247, 75, 251,
-    193, 1, 211, 104, 247, 75, 251, 193, 1, 197, 3, 247, 75, 251, 193, 1,
-    233, 82, 247, 75, 251, 193, 1, 235, 33, 247, 75, 251, 193, 1, 243, 133,
-    247, 75, 251, 193, 1, 210, 34, 247, 75, 251, 193, 1, 231, 67, 247, 75,
-    251, 193, 1, 207, 130, 247, 75, 251, 193, 1, 203, 174, 247, 75, 251, 193,
-    1, 195, 72, 247, 75, 251, 193, 1, 198, 118, 247, 75, 251, 193, 1, 203,
-    18, 247, 75, 251, 193, 1, 223, 46, 247, 75, 251, 193, 1, 238, 141, 247,
-    75, 251, 193, 1, 247, 67, 247, 75, 251, 193, 1, 192, 84, 247, 75, 251,
-    193, 1, 209, 114, 247, 75, 251, 193, 1, 221, 117, 247, 75, 251, 193, 242,
-    254, 77, 195, 29, 6, 1, 65, 195, 29, 6, 1, 249, 48, 195, 29, 6, 1, 249,
-    17, 195, 29, 6, 1, 247, 42, 195, 29, 6, 1, 243, 127, 195, 29, 6, 1, 237,
-    146, 195, 29, 6, 1, 237, 59, 195, 29, 6, 1, 234, 166, 195, 29, 6, 1, 71,
-    195, 29, 6, 1, 233, 59, 195, 29, 6, 1, 231, 240, 195, 29, 6, 1, 140, 195,
-    29, 6, 1, 229, 177, 195, 29, 6, 1, 68, 195, 29, 6, 1, 223, 196, 195, 29,
-    6, 1, 223, 10, 195, 29, 6, 1, 155, 195, 29, 6, 1, 173, 195, 29, 6, 1,
-    219, 73, 195, 29, 6, 1, 216, 232, 195, 29, 6, 1, 214, 121, 195, 29, 6, 1,
-    213, 150, 195, 29, 6, 1, 74, 195, 29, 6, 1, 210, 63, 195, 29, 6, 1, 208,
-    96, 195, 29, 6, 1, 207, 113, 195, 29, 6, 1, 205, 68, 195, 29, 6, 1, 203,
-    113, 195, 29, 6, 1, 199, 145, 195, 29, 6, 1, 199, 33, 195, 29, 6, 1, 66,
-    195, 29, 6, 1, 195, 153, 195, 29, 6, 1, 192, 214, 195, 29, 6, 1, 192,
-    159, 195, 29, 6, 1, 191, 87, 195, 29, 2, 1, 65, 195, 29, 2, 1, 249, 48,
-    195, 29, 2, 1, 249, 17, 195, 29, 2, 1, 247, 42, 195, 29, 2, 1, 243, 127,
-    195, 29, 2, 1, 237, 146, 195, 29, 2, 1, 237, 59, 195, 29, 2, 1, 234, 166,
-    195, 29, 2, 1, 71, 195, 29, 2, 1, 233, 59, 195, 29, 2, 1, 231, 240, 195,
-    29, 2, 1, 140, 195, 29, 2, 1, 229, 177, 195, 29, 2, 1, 68, 195, 29, 2, 1,
-    223, 196, 195, 29, 2, 1, 223, 10, 195, 29, 2, 1, 155, 195, 29, 2, 1, 173,
-    195, 29, 2, 1, 219, 73, 195, 29, 2, 1, 216, 232, 195, 29, 2, 1, 214, 121,
-    195, 29, 2, 1, 213, 150, 195, 29, 2, 1, 74, 195, 29, 2, 1, 210, 63, 195,
-    29, 2, 1, 208, 96, 195, 29, 2, 1, 207, 113, 195, 29, 2, 1, 205, 68, 195,
-    29, 2, 1, 203, 113, 195, 29, 2, 1, 199, 145, 195, 29, 2, 1, 199, 33, 195,
-    29, 2, 1, 66, 195, 29, 2, 1, 195, 153, 195, 29, 2, 1, 192, 214, 195, 29,
-    2, 1, 192, 159, 195, 29, 2, 1, 191, 87, 32, 42, 3, 252, 154, 32, 42, 3,
-    252, 153, 32, 42, 3, 252, 152, 32, 42, 3, 252, 151, 32, 42, 3, 252, 150,
-    32, 42, 3, 252, 149, 32, 42, 3, 252, 148, 32, 42, 3, 252, 147, 32, 42, 3,
-    252, 146, 32, 42, 3, 252, 145, 32, 42, 3, 252, 144, 32, 42, 3, 252, 143,
-    32, 42, 3, 252, 142, 32, 42, 3, 252, 141, 32, 42, 3, 252, 140, 32, 42, 3,
-    252, 139, 32, 42, 3, 252, 138, 32, 42, 3, 252, 137, 32, 42, 3, 252, 136,
-    32, 42, 3, 252, 135, 32, 42, 3, 252, 134, 32, 42, 3, 252, 133, 32, 42, 3,
-    252, 132, 32, 42, 3, 252, 131, 32, 42, 3, 252, 130, 32, 42, 3, 252, 129,
-    32, 42, 3, 252, 128, 32, 42, 3, 255, 164, 32, 42, 3, 252, 127, 32, 42, 3,
-    252, 126, 32, 42, 3, 252, 125, 32, 42, 3, 252, 124, 32, 42, 3, 252, 123,
-    32, 42, 3, 252, 122, 32, 42, 3, 252, 121, 32, 42, 3, 252, 120, 32, 42, 3,
-    252, 119, 32, 42, 3, 252, 118, 32, 42, 3, 252, 117, 32, 42, 3, 252, 116,
-    32, 42, 3, 252, 115, 32, 42, 3, 252, 114, 32, 42, 3, 252, 113, 32, 42, 3,
-    252, 112, 32, 42, 3, 252, 111, 32, 42, 3, 252, 110, 32, 42, 3, 252, 109,
-    32, 42, 3, 252, 108, 32, 42, 3, 252, 107, 32, 42, 3, 252, 106, 32, 42, 3,
-    252, 105, 32, 42, 3, 252, 104, 32, 42, 3, 252, 103, 32, 42, 3, 252, 102,
-    32, 42, 3, 252, 101, 32, 42, 3, 252, 100, 32, 42, 3, 252, 99, 32, 42, 3,
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-    42, 3, 252, 94, 32, 42, 3, 252, 93, 32, 42, 3, 252, 92, 32, 42, 3, 252,
-    91, 32, 42, 3, 252, 90, 32, 42, 3, 252, 89, 32, 42, 3, 252, 88, 32, 42,
-    3, 252, 87, 32, 42, 3, 252, 86, 32, 42, 3, 252, 85, 32, 42, 3, 255, 77,
-    32, 42, 3, 252, 84, 32, 42, 3, 252, 83, 32, 42, 3, 255, 42, 32, 42, 3,
-    252, 82, 32, 42, 3, 252, 81, 32, 42, 3, 252, 80, 32, 42, 3, 252, 79, 32,
-    42, 3, 255, 29, 32, 42, 3, 252, 78, 32, 42, 3, 252, 77, 32, 42, 3, 252,
-    76, 32, 42, 3, 252, 75, 32, 42, 3, 252, 74, 32, 42, 3, 254, 101, 32, 42,
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-    32, 42, 3, 254, 96, 32, 42, 3, 254, 95, 32, 42, 3, 254, 94, 32, 42, 3,
-    254, 92, 32, 42, 3, 254, 91, 32, 42, 3, 254, 90, 32, 42, 3, 254, 89, 32,
-    42, 3, 254, 88, 32, 42, 3, 254, 87, 32, 42, 3, 254, 85, 32, 42, 3, 254,
-    84, 32, 42, 3, 254, 83, 32, 42, 3, 254, 82, 32, 42, 3, 254, 81, 32, 42,
-    3, 254, 80, 32, 42, 3, 254, 79, 32, 42, 3, 254, 78, 32, 42, 3, 254, 77,
-    32, 42, 3, 254, 76, 32, 42, 3, 254, 75, 32, 42, 3, 254, 74, 32, 42, 3,
-    254, 73, 32, 42, 3, 254, 72, 32, 42, 3, 254, 71, 32, 42, 3, 254, 70, 32,
-    42, 3, 254, 69, 32, 42, 3, 254, 68, 32, 42, 3, 254, 67, 32, 42, 3, 254,
-    65, 32, 42, 3, 254, 64, 32, 42, 3, 254, 63, 32, 42, 3, 254, 59, 32, 42,
-    3, 254, 58, 32, 42, 3, 254, 57, 32, 42, 3, 254, 56, 32, 42, 3, 254, 52,
-    32, 42, 3, 254, 51, 32, 42, 3, 254, 50, 32, 42, 3, 254, 49, 32, 42, 3,
-    254, 48, 32, 42, 3, 254, 47, 32, 42, 3, 254, 46, 32, 42, 3, 254, 45, 32,
-    42, 3, 254, 44, 32, 42, 3, 254, 43, 32, 42, 3, 254, 42, 32, 42, 3, 254,
-    41, 32, 42, 3, 254, 40, 32, 42, 3, 254, 39, 32, 42, 3, 254, 38, 32, 42,
-    3, 254, 37, 32, 42, 3, 254, 36, 32, 42, 3, 254, 35, 32, 42, 3, 254, 34,
-    32, 42, 3, 254, 33, 32, 42, 3, 254, 32, 32, 42, 3, 254, 31, 32, 42, 3,
-    254, 30, 32, 42, 3, 254, 28, 32, 42, 3, 254, 27, 32, 42, 3, 254, 26, 32,
-    42, 3, 254, 25, 32, 42, 3, 254, 24, 32, 42, 3, 254, 22, 32, 42, 3, 254,
-    21, 32, 42, 3, 254, 20, 32, 42, 3, 254, 19, 32, 42, 3, 254, 17, 32, 42,
-    3, 254, 16, 32, 42, 3, 254, 15, 32, 42, 3, 253, 237, 32, 42, 3, 253, 235,
-    32, 42, 3, 253, 233, 32, 42, 3, 253, 231, 32, 42, 3, 253, 229, 32, 42, 3,
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-    32, 42, 3, 253, 219, 32, 42, 3, 253, 217, 32, 42, 3, 253, 214, 32, 42, 3,
-    253, 212, 32, 42, 3, 253, 210, 32, 42, 3, 253, 208, 32, 42, 3, 253, 206,
-    32, 42, 3, 253, 204, 32, 42, 3, 253, 202, 32, 42, 3, 253, 200, 32, 42, 3,
-    253, 118, 32, 42, 3, 253, 117, 32, 42, 3, 253, 116, 32, 42, 3, 253, 115,
-    32, 42, 3, 253, 114, 32, 42, 3, 253, 113, 32, 42, 3, 253, 111, 32, 42, 3,
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-    32, 42, 3, 253, 106, 32, 42, 3, 253, 104, 32, 42, 3, 253, 103, 32, 42, 3,
-    253, 99, 32, 42, 3, 253, 98, 32, 42, 3, 253, 96, 32, 42, 3, 253, 95, 32,
-    42, 3, 253, 94, 32, 42, 3, 253, 93, 32, 42, 3, 253, 92, 32, 42, 3, 253,
-    91, 32, 42, 3, 253, 90, 32, 42, 3, 253, 89, 32, 42, 3, 253, 88, 32, 42,
-    3, 253, 87, 32, 42, 3, 253, 86, 32, 42, 3, 253, 85, 32, 42, 3, 253, 84,
-    32, 42, 3, 253, 83, 32, 42, 3, 253, 82, 32, 42, 3, 253, 81, 32, 42, 3,
-    253, 80, 32, 42, 3, 253, 79, 32, 42, 3, 253, 78, 32, 42, 3, 253, 77, 32,
-    42, 3, 253, 76, 32, 42, 3, 253, 75, 32, 42, 3, 253, 74, 32, 42, 3, 253,
-    73, 32, 42, 3, 253, 72, 32, 42, 3, 253, 71, 32, 42, 3, 253, 70, 32, 42,
-    3, 253, 69, 32, 42, 3, 253, 68, 32, 42, 3, 253, 67, 32, 42, 3, 253, 66,
-    32, 42, 3, 253, 65, 32, 42, 3, 253, 64, 32, 42, 3, 253, 63, 32, 42, 3,
-    253, 62, 32, 42, 3, 253, 61, 32, 42, 3, 253, 60, 32, 42, 3, 253, 59, 32,
-    42, 3, 253, 58, 32, 42, 3, 253, 57, 32, 42, 3, 253, 56, 32, 42, 3, 253,
-    55, 32, 42, 3, 253, 54, 32, 42, 3, 253, 53, 32, 42, 3, 253, 52, 32, 42,
-    3, 253, 51, 32, 42, 3, 253, 50, 32, 42, 3, 253, 49, 32, 42, 3, 253, 48,
-    32, 42, 3, 253, 47, 32, 42, 3, 253, 46, 32, 42, 3, 253, 45, 32, 42, 3,
-    253, 44, 32, 42, 3, 253, 43, 32, 42, 3, 253, 42, 32, 42, 3, 253, 41, 32,
-    42, 3, 253, 40, 32, 42, 3, 253, 39, 32, 42, 3, 253, 38, 32, 42, 3, 253,
-    37, 32, 42, 3, 253, 36, 32, 42, 3, 253, 35, 32, 42, 3, 253, 34, 32, 42,
-    3, 253, 33, 32, 42, 3, 253, 32, 32, 42, 3, 253, 31, 32, 42, 3, 253, 30,
-    32, 42, 3, 253, 29, 32, 42, 3, 253, 28, 32, 42, 3, 253, 27, 32, 42, 3,
-    253, 26, 32, 42, 3, 253, 25, 32, 42, 3, 253, 24, 32, 42, 3, 253, 23, 32,
-    42, 3, 253, 22, 32, 42, 3, 253, 21, 32, 42, 3, 253, 20, 32, 42, 3, 253,
-    19, 32, 42, 3, 253, 18, 32, 42, 3, 253, 17, 32, 42, 3, 253, 16, 32, 42,
-    3, 253, 15, 32, 42, 3, 253, 14, 32, 42, 3, 253, 13, 32, 42, 3, 253, 12,
-    32, 42, 3, 253, 11, 32, 42, 3, 253, 10, 32, 42, 3, 253, 9, 32, 42, 3,
-    253, 8, 32, 42, 3, 253, 7, 32, 42, 3, 253, 6, 32, 42, 3, 253, 5, 32, 42,
-    3, 253, 4, 32, 42, 3, 253, 3, 32, 42, 3, 253, 2, 32, 42, 3, 253, 1, 32,
-    42, 3, 253, 0, 32, 42, 3, 252, 255, 32, 42, 3, 252, 254, 32, 42, 3, 252,
-    253, 32, 42, 3, 252, 252, 32, 42, 3, 252, 251, 32, 42, 3, 252, 250, 32,
-    42, 3, 252, 249, 32, 42, 3, 252, 248, 32, 42, 3, 252, 247, 32, 42, 3,
-    252, 246, 32, 42, 3, 252, 245, 32, 42, 3, 252, 244, 32, 42, 3, 252, 243,
-    32, 42, 3, 252, 242, 32, 42, 3, 252, 241, 32, 42, 3, 252, 240, 32, 42, 3,
-    252, 239, 32, 42, 3, 252, 238, 32, 42, 3, 252, 237, 32, 42, 3, 252, 236,
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-    3, 252, 233, 71, 32, 42, 3, 252, 232, 233, 175, 32, 42, 3, 252, 231, 230,
-    116, 32, 42, 3, 252, 230, 223, 35, 32, 42, 3, 252, 229, 222, 152, 32, 42,
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-    220, 129, 32, 42, 3, 252, 225, 220, 128, 32, 42, 3, 252, 224, 220, 127,
-    32, 42, 3, 252, 223, 193, 224, 32, 42, 3, 252, 222, 192, 235, 32, 42, 3,
-    252, 221, 192, 159, 32, 42, 3, 252, 220, 211, 110, 32, 42, 3, 252, 219,
-    252, 69, 32, 42, 3, 252, 218, 249, 54, 32, 42, 3, 252, 217, 237, 193, 32,
-    42, 3, 252, 216, 233, 183, 32, 42, 3, 252, 215, 223, 10, 32, 42, 3, 252,
-    214, 32, 42, 3, 252, 213, 32, 42, 3, 252, 212, 32, 42, 3, 252, 211, 32,
-    42, 3, 252, 210, 32, 42, 3, 252, 209, 32, 42, 3, 252, 208, 32, 42, 3,
-    252, 207, 52, 1, 2, 6, 252, 206, 52, 1, 200, 182, 197, 238, 242, 83, 52,
-    1, 200, 182, 132, 197, 238, 242, 83, 52, 1, 2, 252, 25, 52, 1, 2, 6, 250,
-    120, 52, 1, 2, 78, 4, 102, 52, 1, 2, 235, 37, 237, 2, 52, 1, 2, 235, 37,
-    237, 3, 4, 207, 24, 102, 52, 1, 2, 235, 37, 237, 3, 4, 238, 175, 52, 1,
-    2, 237, 70, 237, 2, 52, 1, 2, 238, 128, 4, 199, 215, 52, 1, 2, 238, 128,
-    4, 102, 52, 1, 2, 238, 128, 4, 228, 251, 23, 199, 215, 52, 1, 2, 207, 18,
-    71, 52, 1, 2, 242, 219, 207, 18, 211, 77, 71, 52, 1, 2, 233, 37, 237, 2,
-    52, 1, 2, 207, 140, 228, 187, 52, 1, 2, 6, 232, 51, 52, 1, 2, 232, 52, 4,
-    102, 52, 1, 2, 6, 232, 52, 4, 102, 52, 1, 2, 230, 117, 4, 106, 52, 1, 2,
-    6, 230, 116, 52, 1, 2, 229, 197, 4, 102, 52, 1, 2, 236, 139, 223, 36, 4,
-    201, 28, 23, 102, 52, 1, 2, 218, 227, 237, 2, 52, 1, 2, 218, 170, 237, 2,
-    52, 1, 2, 220, 143, 4, 248, 231, 52, 1, 2, 6, 220, 143, 4, 248, 231, 52,
-    1, 2, 220, 143, 4, 207, 24, 228, 251, 23, 248, 231, 52, 1, 2, 219, 162,
-    52, 1, 2, 219, 163, 4, 207, 24, 102, 52, 1, 2, 153, 192, 159, 52, 1, 2,
-    153, 192, 160, 4, 248, 231, 52, 1, 2, 187, 4, 106, 52, 1, 2, 6, 211, 151,
-    52, 1, 2, 242, 219, 211, 110, 52, 1, 2, 208, 104, 52, 1, 2, 153, 207,
-    222, 4, 179, 219, 212, 52, 1, 2, 153, 207, 222, 4, 179, 219, 213, 23,
-    207, 24, 102, 52, 1, 2, 207, 222, 4, 199, 215, 52, 1, 2, 207, 222, 4,
-    232, 233, 52, 1, 2, 6, 146, 52, 1, 2, 199, 152, 237, 3, 4, 238, 175, 52,
-    1, 2, 197, 170, 237, 2, 52, 1, 2, 197, 170, 237, 3, 4, 207, 24, 102, 52,
-    1, 2, 199, 79, 237, 2, 52, 1, 2, 200, 44, 4, 207, 24, 102, 52, 1, 2, 196,
-    13, 4, 50, 102, 52, 1, 2, 6, 192, 159, 52, 1, 231, 11, 201, 64, 4, 106,
-    52, 1, 207, 18, 231, 11, 201, 64, 4, 106, 52, 1, 248, 172, 242, 231, 52,
-    1, 237, 98, 242, 231, 52, 1, 220, 3, 242, 231, 52, 1, 251, 150, 242, 231,
-    52, 1, 207, 24, 242, 232, 4, 207, 24, 102, 52, 1, 2, 206, 9, 4, 238, 175,
-    238, 135, 5, 65, 238, 135, 5, 71, 238, 135, 5, 68, 238, 135, 5, 74, 238,
-    135, 5, 66, 238, 135, 5, 223, 32, 238, 135, 5, 222, 201, 238, 135, 5,
-    155, 238, 135, 5, 222, 22, 238, 135, 5, 221, 166, 238, 135, 5, 221, 67,
-    238, 135, 5, 220, 232, 238, 135, 5, 173, 238, 135, 5, 219, 238, 238, 135,
-    5, 219, 146, 238, 135, 5, 219, 43, 238, 135, 5, 218, 225, 238, 135, 5,
-    174, 238, 135, 5, 216, 232, 238, 135, 5, 216, 100, 238, 135, 5, 216, 12,
-    238, 135, 5, 215, 155, 238, 135, 5, 180, 238, 135, 5, 214, 121, 238, 135,
-    5, 213, 219, 238, 135, 5, 213, 43, 238, 135, 5, 212, 178, 238, 135, 5,
-    168, 238, 135, 5, 210, 63, 238, 135, 5, 209, 185, 238, 135, 5, 209, 73,
-    238, 135, 5, 208, 165, 238, 135, 5, 165, 238, 135, 5, 207, 113, 238, 135,
-    5, 207, 1, 238, 135, 5, 206, 162, 238, 135, 5, 206, 68, 238, 135, 5, 188,
-    238, 135, 5, 205, 68, 238, 135, 5, 202, 222, 238, 135, 5, 202, 46, 238,
-    135, 5, 201, 4, 238, 135, 5, 190, 190, 238, 135, 5, 199, 145, 238, 135,
-    5, 198, 193, 238, 135, 5, 159, 238, 135, 5, 197, 94, 238, 135, 5, 193,
-    190, 238, 135, 5, 193, 125, 238, 135, 5, 193, 86, 238, 135, 5, 193, 48,
-    238, 135, 5, 192, 220, 238, 135, 5, 192, 214, 238, 135, 5, 191, 123, 238,
-    135, 5, 191, 7, 223, 164, 251, 18, 1, 251, 190, 223, 164, 251, 18, 1,
-    248, 211, 223, 164, 251, 18, 1, 231, 38, 223, 164, 251, 18, 1, 237, 252,
-    223, 164, 251, 18, 1, 229, 245, 223, 164, 251, 18, 1, 193, 133, 223, 164,
-    251, 18, 1, 191, 91, 223, 164, 251, 18, 1, 229, 184, 223, 164, 251, 18,
-    1, 199, 69, 223, 164, 251, 18, 1, 191, 249, 223, 164, 251, 18, 1, 222,
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-    18, 1, 250, 126, 223, 164, 251, 18, 1, 210, 63, 223, 164, 251, 18, 1,
-    205, 189, 223, 164, 251, 18, 1, 208, 37, 223, 164, 251, 18, 1, 207, 38,
-    223, 164, 251, 18, 1, 203, 69, 223, 164, 251, 18, 1, 199, 159, 223, 164,
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-    164, 251, 18, 31, 197, 32, 223, 164, 251, 18, 31, 91, 228, 140, 223, 164,
-    251, 18, 31, 91, 189, 223, 164, 251, 18, 31, 199, 96, 189, 210, 180, 1,
-    251, 190, 210, 180, 1, 248, 211, 210, 180, 1, 231, 38, 210, 180, 1, 237,
-    252, 210, 180, 1, 229, 245, 210, 180, 1, 193, 133, 210, 180, 1, 191, 91,
-    210, 180, 1, 229, 184, 210, 180, 1, 199, 69, 210, 180, 1, 191, 249, 210,
-    180, 1, 222, 75, 210, 180, 1, 220, 26, 210, 180, 1, 216, 193, 210, 180,
-    1, 53, 212, 130, 210, 180, 1, 212, 130, 210, 180, 1, 205, 148, 210, 180,
-    1, 250, 126, 210, 180, 1, 210, 63, 210, 180, 1, 205, 189, 210, 180, 1,
-    208, 37, 210, 180, 1, 207, 38, 210, 180, 1, 203, 69, 210, 180, 1, 199,
-    159, 210, 180, 219, 219, 232, 201, 210, 180, 206, 203, 232, 201, 210,
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-    210, 180, 31, 149, 210, 180, 31, 199, 95, 210, 180, 31, 197, 32, 214,
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-    214, 246, 1, 248, 211, 214, 246, 1, 231, 38, 214, 246, 1, 237, 252, 214,
-    246, 1, 53, 229, 245, 214, 246, 1, 229, 245, 214, 246, 1, 193, 133, 214,
-    246, 1, 191, 91, 214, 246, 1, 229, 184, 214, 246, 1, 199, 69, 214, 246,
-    1, 53, 191, 249, 214, 246, 1, 191, 249, 214, 246, 1, 53, 222, 75, 214,
-    246, 1, 222, 75, 214, 246, 1, 53, 220, 26, 214, 246, 1, 220, 26, 214,
-    246, 1, 53, 216, 193, 214, 246, 1, 216, 193, 214, 246, 1, 53, 212, 130,
-    214, 246, 1, 212, 130, 214, 246, 1, 205, 148, 214, 246, 1, 250, 126, 214,
-    246, 1, 210, 63, 214, 246, 1, 205, 189, 214, 246, 1, 208, 37, 214, 246,
-    1, 207, 38, 214, 246, 1, 53, 203, 69, 214, 246, 1, 203, 69, 214, 246, 1,
-    199, 159, 214, 246, 31, 107, 214, 246, 31, 109, 214, 246, 31, 138, 214,
-    246, 31, 134, 214, 246, 238, 202, 31, 134, 214, 246, 31, 149, 214, 246,
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-    1, 251, 190, 230, 4, 1, 248, 211, 230, 4, 1, 231, 38, 230, 4, 1, 237,
-    251, 230, 4, 1, 229, 245, 230, 4, 1, 193, 133, 230, 4, 1, 191, 89, 230,
-    4, 1, 229, 184, 230, 4, 1, 199, 69, 230, 4, 1, 191, 249, 230, 4, 1, 222,
-    75, 230, 4, 1, 220, 26, 230, 4, 1, 216, 193, 230, 4, 1, 212, 130, 230, 4,
-    1, 205, 148, 230, 4, 1, 250, 124, 230, 4, 1, 210, 63, 230, 4, 1, 205,
-    189, 230, 4, 1, 208, 37, 230, 4, 1, 203, 69, 230, 4, 1, 199, 159, 230, 4,
-    31, 107, 230, 4, 31, 149, 230, 4, 31, 199, 95, 230, 4, 31, 197, 32, 230,
-    4, 31, 91, 228, 140, 209, 197, 1, 251, 187, 209, 197, 1, 248, 214, 209,
-    197, 1, 231, 213, 209, 197, 1, 237, 108, 209, 197, 1, 229, 245, 209, 197,
-    1, 193, 140, 209, 197, 1, 191, 115, 209, 197, 1, 229, 186, 209, 197, 1,
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-    209, 197, 1, 251, 230, 209, 197, 1, 210, 63, 209, 197, 1, 205, 191, 209,
-    197, 1, 208, 42, 209, 197, 1, 206, 124, 209, 197, 1, 203, 69, 209, 197,
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-    32, 209, 197, 31, 91, 228, 140, 209, 197, 31, 109, 209, 197, 31, 138,
-    209, 197, 193, 23, 204, 10, 218, 180, 1, 65, 218, 180, 1, 250, 120, 218,
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-    218, 180, 1, 172, 218, 180, 1, 218, 168, 218, 180, 1, 215, 61, 218, 180,
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-    218, 180, 1, 66, 218, 180, 1, 233, 175, 218, 180, 1, 208, 104, 218, 180,
-    1, 206, 8, 218, 180, 1, 197, 135, 218, 180, 1, 251, 132, 218, 180, 1,
-    234, 103, 218, 180, 1, 218, 183, 218, 180, 1, 213, 80, 218, 180, 1, 247,
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-    229, 144, 1, 193, 190, 152, 229, 144, 1, 249, 153, 152, 229, 144, 1, 249,
-    152, 152, 229, 144, 1, 168, 152, 229, 144, 1, 174, 152, 229, 144, 1, 180,
-    152, 229, 144, 1, 215, 5, 152, 229, 144, 1, 214, 121, 152, 229, 144, 1,
-    214, 119, 152, 229, 144, 1, 165, 152, 229, 144, 1, 207, 184, 152, 229,
-    144, 1, 173, 152, 229, 144, 1, 221, 215, 152, 229, 144, 1, 229, 177, 152,
-    229, 144, 1, 188, 152, 229, 144, 1, 205, 205, 152, 229, 144, 1, 205, 68,
-    152, 229, 144, 1, 155, 152, 229, 144, 1, 208, 96, 152, 229, 144, 1, 190,
-    190, 152, 229, 144, 1, 199, 250, 152, 229, 144, 1, 199, 145, 152, 229,
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-    229, 144, 16, 195, 63, 152, 229, 144, 16, 195, 62, 152, 238, 166, 1, 65,
-    152, 238, 166, 1, 71, 152, 238, 166, 1, 68, 152, 238, 166, 1, 74, 152,
-    238, 166, 1, 170, 152, 238, 166, 1, 193, 190, 152, 238, 166, 1, 249, 153,
-    152, 238, 166, 1, 168, 152, 238, 166, 1, 174, 152, 238, 166, 1, 180, 152,
-    238, 166, 1, 214, 121, 152, 238, 166, 1, 165, 152, 238, 166, 1, 173, 152,
-    238, 166, 1, 221, 215, 152, 238, 166, 1, 229, 177, 152, 238, 166, 1, 188,
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-    166, 1, 199, 145, 152, 238, 166, 1, 159, 152, 238, 166, 1, 238, 32, 152,
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-    152, 238, 166, 31, 175, 152, 238, 166, 31, 171, 152, 238, 166, 31, 178,
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-    115, 228, 140, 152, 238, 166, 31, 232, 128, 228, 140, 152, 238, 166, 31,
-    232, 226, 228, 140, 152, 238, 166, 31, 202, 136, 228, 140, 152, 238, 166,
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-    189, 152, 238, 166, 31, 232, 226, 189, 152, 238, 166, 31, 202, 136, 189,
-    152, 238, 166, 31, 203, 247, 189, 152, 238, 166, 31, 234, 164, 189, 152,
-    238, 166, 31, 213, 175, 189, 152, 238, 166, 31, 199, 96, 189, 152, 238,
-    166, 31, 197, 33, 189, 152, 238, 166, 31, 198, 250, 189, 152, 238, 166,
-    31, 232, 136, 189, 152, 238, 166, 31, 233, 16, 189, 152, 238, 166, 31,
-    202, 121, 189, 152, 238, 166, 31, 203, 242, 189, 152, 238, 166, 31, 234,
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-    31, 232, 226, 228, 141, 189, 152, 238, 166, 31, 202, 136, 228, 141, 189,
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-    228, 141, 189, 152, 238, 166, 31, 213, 175, 228, 141, 189, 152, 238, 166,
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-    232, 118, 234, 164, 197, 39, 152, 238, 166, 232, 118, 213, 175, 197, 39,
-    152, 238, 166, 232, 118, 199, 96, 197, 39, 221, 199, 1, 65, 221, 199, 18,
-    3, 68, 221, 199, 18, 3, 66, 221, 199, 18, 3, 117, 146, 221, 199, 18, 3,
-    71, 221, 199, 18, 3, 74, 221, 199, 18, 219, 198, 77, 221, 199, 3, 55,
-    206, 189, 60, 221, 199, 3, 251, 71, 221, 199, 3, 195, 35, 221, 199, 1,
-    155, 221, 199, 1, 221, 215, 221, 199, 1, 231, 240, 221, 199, 1, 231, 91,
-    221, 199, 1, 247, 160, 221, 199, 1, 247, 1, 221, 199, 1, 223, 32, 221,
-    199, 1, 212, 101, 221, 199, 1, 197, 132, 221, 199, 1, 197, 120, 221, 199,
-    1, 237, 191, 221, 199, 1, 237, 175, 221, 199, 1, 213, 79, 221, 199, 1,
-    190, 190, 221, 199, 1, 199, 49, 221, 199, 1, 238, 32, 221, 199, 1, 237,
-    68, 221, 199, 1, 180, 221, 199, 1, 168, 221, 199, 1, 209, 228, 221, 199,
-    1, 249, 153, 221, 199, 1, 248, 203, 221, 199, 1, 174, 221, 199, 1, 170,
-    221, 199, 1, 165, 221, 199, 1, 173, 221, 199, 1, 195, 188, 221, 199, 1,
-    203, 165, 221, 199, 1, 201, 175, 221, 199, 1, 188, 221, 199, 1, 191, 123,
-    221, 199, 1, 140, 221, 199, 1, 221, 101, 221, 199, 1, 197, 100, 221, 199,
-    1, 197, 101, 221, 199, 1, 195, 70, 221, 199, 3, 249, 88, 58, 221, 199, 3,
-    247, 74, 221, 199, 3, 75, 60, 221, 199, 195, 40, 221, 199, 17, 107, 221,
-    199, 17, 109, 221, 199, 17, 138, 221, 199, 17, 134, 221, 199, 31, 199,
-    95, 221, 199, 31, 197, 32, 221, 199, 31, 91, 228, 140, 221, 199, 31, 91,
-    189, 221, 199, 232, 118, 91, 230, 70, 221, 199, 208, 152, 236, 140, 221,
-    199, 208, 152, 2, 243, 10, 221, 199, 208, 152, 243, 10, 221, 199, 208,
-    152, 238, 228, 164, 221, 199, 208, 152, 217, 83, 221, 199, 208, 152, 218,
-    246, 221, 199, 208, 152, 237, 238, 221, 199, 208, 152, 55, 237, 238, 221,
-    199, 208, 152, 219, 106, 39, 202, 2, 251, 29, 1, 229, 245, 39, 202, 2,
-    251, 29, 1, 220, 26, 39, 202, 2, 251, 29, 1, 229, 184, 39, 202, 2, 251,
-    29, 1, 216, 193, 39, 202, 2, 251, 29, 1, 208, 37, 39, 202, 2, 251, 29, 1,
-    193, 133, 39, 202, 2, 251, 29, 1, 203, 69, 39, 202, 2, 251, 29, 1, 207,
-    38, 39, 202, 2, 251, 29, 1, 248, 211, 39, 202, 2, 251, 29, 1, 199, 159,
-    39, 202, 2, 251, 29, 1, 205, 122, 39, 202, 2, 251, 29, 1, 222, 75, 39,
-    202, 2, 251, 29, 1, 212, 130, 39, 202, 2, 251, 29, 1, 221, 194, 39, 202,
-    2, 251, 29, 1, 205, 189, 39, 202, 2, 251, 29, 1, 205, 148, 39, 202, 2,
-    251, 29, 1, 233, 59, 39, 202, 2, 251, 29, 1, 251, 192, 39, 202, 2, 251,
-    29, 1, 250, 124, 39, 202, 2, 251, 29, 1, 237, 65, 39, 202, 2, 251, 29, 1,
-    231, 38, 39, 202, 2, 251, 29, 1, 237, 252, 39, 202, 2, 251, 29, 1, 231,
-    79, 39, 202, 2, 251, 29, 1, 199, 69, 39, 202, 2, 251, 29, 1, 191, 89, 39,
-    202, 2, 251, 29, 1, 237, 62, 39, 202, 2, 251, 29, 1, 191, 249, 39, 202,
-    2, 251, 29, 1, 199, 35, 39, 202, 2, 251, 29, 1, 199, 14, 39, 202, 2, 251,
-    29, 31, 107, 39, 202, 2, 251, 29, 31, 233, 15, 39, 202, 2, 251, 29, 167,
-    223, 144, 39, 186, 251, 29, 1, 229, 210, 39, 186, 251, 29, 1, 220, 35,
-    39, 186, 251, 29, 1, 230, 81, 39, 186, 251, 29, 1, 216, 208, 39, 186,
-    251, 29, 1, 208, 89, 39, 186, 251, 29, 1, 193, 133, 39, 186, 251, 29, 1,
-    234, 20, 39, 186, 251, 29, 1, 207, 71, 39, 186, 251, 29, 1, 248, 245, 39,
-    186, 251, 29, 1, 199, 114, 39, 186, 251, 29, 1, 234, 21, 39, 186, 251,
-    29, 1, 222, 106, 39, 186, 251, 29, 1, 213, 24, 39, 186, 251, 29, 1, 221,
-    210, 39, 186, 251, 29, 1, 205, 192, 39, 186, 251, 29, 1, 234, 19, 39,
-    186, 251, 29, 1, 233, 46, 39, 186, 251, 29, 1, 251, 192, 39, 186, 251,
-    29, 1, 251, 230, 39, 186, 251, 29, 1, 238, 26, 39, 186, 251, 29, 1, 231,
-    156, 39, 186, 251, 29, 1, 238, 3, 39, 186, 251, 29, 1, 231, 86, 39, 186,
-    251, 29, 1, 199, 219, 39, 186, 251, 29, 1, 191, 113, 39, 186, 251, 29, 1,
-    199, 41, 39, 186, 251, 29, 1, 192, 75, 39, 186, 251, 29, 1, 199, 29, 39,
-    186, 251, 29, 1, 191, 116, 39, 186, 251, 29, 31, 107, 39, 186, 251, 29,
-    31, 199, 95, 39, 186, 251, 29, 31, 197, 32, 217, 81, 1, 251, 190, 217,
-    81, 1, 248, 211, 217, 81, 1, 248, 194, 217, 81, 1, 231, 38, 217, 81, 1,
-    231, 64, 217, 81, 1, 237, 252, 217, 81, 1, 229, 245, 217, 81, 1, 193,
-    133, 217, 81, 3, 196, 158, 217, 81, 1, 191, 91, 217, 81, 1, 191, 64, 217,
-    81, 1, 223, 12, 217, 81, 1, 222, 248, 217, 81, 1, 229, 184, 217, 81, 1,
-    199, 69, 217, 81, 1, 191, 249, 217, 81, 1, 222, 75, 217, 81, 1, 192, 217,
-    217, 81, 1, 221, 201, 217, 81, 1, 220, 26, 217, 81, 1, 237, 61, 217, 81,
-    1, 199, 40, 217, 81, 1, 216, 193, 217, 81, 1, 212, 130, 217, 81, 1, 205,
-    148, 217, 81, 1, 250, 126, 217, 81, 1, 252, 158, 217, 81, 1, 210, 63,
-    217, 81, 1, 233, 59, 217, 81, 1, 205, 189, 217, 81, 1, 208, 37, 217, 81,
-    1, 192, 193, 217, 81, 1, 208, 64, 217, 81, 1, 207, 38, 217, 81, 1, 203,
-    69, 217, 81, 1, 201, 143, 217, 81, 1, 199, 159, 217, 81, 252, 68, 87, 58,
-    217, 81, 252, 68, 87, 60, 217, 81, 31, 107, 217, 81, 31, 149, 217, 81,
-    31, 199, 95, 217, 81, 31, 197, 32, 217, 81, 31, 91, 228, 140, 217, 81,
-    208, 152, 201, 102, 217, 81, 208, 152, 232, 201, 217, 81, 208, 152, 55,
-    75, 193, 53, 236, 140, 217, 81, 208, 152, 75, 193, 53, 236, 140, 217, 81,
-    208, 152, 236, 140, 217, 81, 208, 152, 105, 236, 138, 217, 81, 208, 152,
-    219, 113, 233, 3, 250, 142, 1, 65, 250, 142, 1, 252, 206, 250, 142, 1,
-    251, 68, 250, 142, 1, 252, 164, 250, 142, 1, 251, 132, 250, 142, 1, 252,
-    166, 250, 142, 1, 252, 25, 250, 142, 1, 252, 21, 250, 142, 1, 71, 250,
-    142, 1, 234, 188, 250, 142, 1, 74, 250, 142, 1, 211, 87, 250, 142, 1, 68,
-    250, 142, 1, 223, 199, 250, 142, 1, 66, 250, 142, 1, 196, 30, 250, 142,
-    1, 222, 22, 250, 142, 1, 192, 214, 250, 142, 1, 192, 173, 250, 142, 1,
-    192, 184, 250, 142, 1, 231, 165, 250, 142, 1, 231, 122, 250, 142, 1, 231,
-    77, 250, 142, 1, 247, 42, 250, 142, 1, 223, 10, 250, 142, 1, 199, 145,
-    250, 142, 1, 199, 33, 250, 142, 1, 237, 146, 250, 142, 1, 237, 59, 250,
-    142, 1, 197, 127, 250, 142, 1, 210, 63, 250, 142, 1, 233, 59, 250, 142,
-    1, 249, 17, 250, 142, 1, 248, 196, 250, 142, 1, 214, 55, 250, 142, 1,
-    213, 226, 250, 142, 1, 213, 227, 250, 142, 1, 214, 121, 250, 142, 1, 212,
-    90, 250, 142, 1, 213, 74, 250, 142, 1, 216, 232, 250, 142, 1, 229, 73,
-    250, 142, 1, 191, 173, 250, 142, 1, 192, 80, 250, 142, 1, 195, 153, 250,
-    142, 1, 207, 113, 250, 142, 1, 219, 238, 250, 142, 1, 205, 68, 250, 142,
-    1, 191, 87, 250, 142, 1, 203, 113, 250, 142, 1, 191, 62, 250, 142, 1,
-    202, 229, 250, 142, 1, 201, 144, 250, 142, 1, 229, 245, 250, 142, 252,
-    68, 77, 198, 138, 105, 185, 139, 91, 75, 208, 151, 2, 105, 185, 139, 91,
-    75, 208, 151, 220, 13, 105, 185, 139, 91, 75, 208, 151, 220, 13, 91, 75,
-    139, 105, 185, 208, 151, 220, 13, 105, 206, 185, 139, 91, 206, 189, 208,
-    151, 220, 13, 91, 206, 189, 139, 105, 206, 185, 208, 151, 223, 122, 210,
-    106, 1, 251, 190, 223, 122, 210, 106, 1, 248, 211, 223, 122, 210, 106, 1,
-    231, 38, 223, 122, 210, 106, 1, 237, 252, 223, 122, 210, 106, 1, 229,
-    245, 223, 122, 210, 106, 1, 193, 133, 223, 122, 210, 106, 1, 191, 91,
-    223, 122, 210, 106, 1, 229, 184, 223, 122, 210, 106, 1, 199, 69, 223,
-    122, 210, 106, 1, 191, 249, 223, 122, 210, 106, 1, 222, 75, 223, 122,
-    210, 106, 1, 220, 26, 223, 122, 210, 106, 1, 216, 193, 223, 122, 210,
-    106, 1, 212, 130, 223, 122, 210, 106, 1, 205, 148, 223, 122, 210, 106, 1,
-    250, 126, 223, 122, 210, 106, 1, 210, 63, 223, 122, 210, 106, 1, 205,
-    189, 223, 122, 210, 106, 1, 208, 37, 223, 122, 210, 106, 1, 207, 38, 223,
-    122, 210, 106, 1, 203, 69, 223, 122, 210, 106, 1, 199, 159, 223, 122,
-    210, 106, 31, 107, 223, 122, 210, 106, 31, 109, 223, 122, 210, 106, 31,
-    138, 223, 122, 210, 106, 31, 134, 223, 122, 210, 106, 31, 199, 95, 223,
-    122, 210, 106, 31, 197, 32, 223, 122, 210, 106, 31, 91, 228, 140, 223,
-    122, 210, 106, 31, 91, 189, 223, 122, 210, 199, 1, 251, 190, 223, 122,
-    210, 199, 1, 248, 211, 223, 122, 210, 199, 1, 231, 38, 223, 122, 210,
-    199, 1, 237, 252, 223, 122, 210, 199, 1, 229, 245, 223, 122, 210, 199, 1,
-    193, 132, 223, 122, 210, 199, 1, 191, 91, 223, 122, 210, 199, 1, 229,
-    184, 223, 122, 210, 199, 1, 199, 69, 223, 122, 210, 199, 1, 191, 249,
-    223, 122, 210, 199, 1, 222, 75, 223, 122, 210, 199, 1, 220, 26, 223, 122,
-    210, 199, 1, 216, 192, 223, 122, 210, 199, 1, 212, 130, 223, 122, 210,
-    199, 1, 205, 148, 223, 122, 210, 199, 1, 210, 63, 223, 122, 210, 199, 1,
-    205, 189, 223, 122, 210, 199, 1, 203, 69, 223, 122, 210, 199, 1, 199,
-    159, 223, 122, 210, 199, 31, 107, 223, 122, 210, 199, 31, 109, 223, 122,
-    210, 199, 31, 138, 223, 122, 210, 199, 31, 134, 223, 122, 210, 199, 31,
-    199, 95, 223, 122, 210, 199, 31, 197, 32, 223, 122, 210, 199, 31, 91,
-    228, 140, 223, 122, 210, 199, 31, 91, 189, 208, 177, 210, 199, 1, 251,
-    190, 208, 177, 210, 199, 1, 248, 211, 208, 177, 210, 199, 1, 231, 38,
-    208, 177, 210, 199, 1, 237, 252, 208, 177, 210, 199, 1, 229, 245, 208,
-    177, 210, 199, 1, 193, 132, 208, 177, 210, 199, 1, 191, 91, 208, 177,
-    210, 199, 1, 229, 184, 208, 177, 210, 199, 1, 191, 249, 208, 177, 210,
-    199, 1, 222, 75, 208, 177, 210, 199, 1, 220, 26, 208, 177, 210, 199, 1,
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-    233, 182, 39, 177, 6, 1, 233, 177, 39, 177, 6, 1, 234, 79, 56, 39, 177,
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-    39, 1, 205, 192, 192, 39, 1, 238, 26, 192, 39, 1, 190, 190, 192, 39, 1,
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-    109, 192, 39, 1, 195, 188, 192, 39, 1, 195, 189, 251, 157, 20, 192, 39,
-    1, 208, 89, 192, 39, 1, 222, 106, 192, 39, 1, 221, 212, 192, 39, 1, 231,
-    227, 192, 39, 1, 220, 35, 192, 39, 1, 216, 46, 192, 39, 1, 212, 130, 192,
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-    233, 224, 192, 39, 1, 229, 252, 192, 39, 1, 191, 240, 192, 39, 1, 233,
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-    86, 77, 192, 39, 1, 220, 36, 4, 75, 58, 192, 39, 1, 191, 241, 4, 243, 2,
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-    202, 28, 1, 193, 133, 39, 202, 28, 1, 191, 91, 39, 202, 28, 1, 229, 184,
-    39, 202, 28, 1, 191, 249, 39, 202, 28, 1, 222, 75, 39, 202, 28, 1, 220,
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-    53, 212, 130, 39, 202, 28, 1, 53, 212, 131, 4, 81, 199, 215, 39, 202, 28,
-    1, 205, 148, 39, 202, 28, 1, 250, 126, 39, 202, 28, 1, 251, 157, 250,
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-    53, 205, 189, 39, 202, 28, 1, 53, 205, 190, 4, 81, 199, 215, 39, 202, 28,
-    1, 207, 36, 39, 202, 28, 1, 203, 69, 39, 202, 28, 1, 199, 159, 39, 202,
-    28, 1, 53, 199, 159, 39, 202, 28, 1, 53, 199, 160, 4, 81, 199, 215, 39,
-    202, 28, 31, 107, 39, 202, 28, 31, 109, 39, 202, 28, 31, 138, 39, 202,
-    28, 31, 134, 39, 202, 28, 31, 149, 39, 202, 28, 31, 199, 95, 39, 202, 28,
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-    202, 28, 1, 191, 249, 202, 28, 1, 222, 75, 202, 28, 1, 220, 26, 202, 28,
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-    126, 202, 28, 1, 210, 63, 202, 28, 1, 205, 189, 202, 28, 1, 207, 37, 202,
-    28, 1, 203, 69, 202, 28, 1, 199, 159, 202, 28, 1, 233, 30, 202, 28, 1,
-    219, 182, 202, 28, 223, 149, 203, 69, 202, 28, 33, 75, 60, 202, 28, 33,
-    105, 185, 60, 202, 28, 33, 75, 58, 202, 28, 33, 105, 185, 58, 202, 28,
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-    202, 28, 33, 228, 251, 60, 202, 28, 33, 179, 228, 251, 60, 202, 28, 33,
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-    39, 196, 19, 1, 191, 249, 39, 196, 19, 1, 222, 75, 39, 196, 19, 1, 220,
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-    1, 207, 38, 39, 196, 19, 1, 203, 69, 39, 196, 19, 1, 199, 159, 39, 196,
-    19, 1, 219, 182, 39, 196, 19, 33, 75, 58, 39, 196, 19, 33, 75, 60, 39,
-    196, 19, 33, 105, 185, 58, 39, 196, 19, 33, 105, 185, 60, 39, 196, 19,
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-    1, 251, 190, 243, 61, 1, 2, 251, 190, 243, 61, 1, 248, 211, 243, 61, 1,
-    231, 38, 243, 61, 1, 237, 252, 243, 61, 1, 229, 245, 243, 61, 1, 193,
-    133, 243, 61, 1, 238, 174, 193, 133, 243, 61, 1, 191, 91, 243, 61, 1,
-    229, 184, 243, 61, 1, 191, 249, 243, 61, 1, 222, 75, 243, 61, 1, 220, 26,
-    243, 61, 1, 216, 193, 243, 61, 1, 212, 130, 243, 61, 1, 205, 148, 243,
-    61, 1, 250, 126, 243, 61, 1, 210, 63, 243, 61, 1, 207, 38, 243, 61, 1,
-    203, 69, 243, 61, 1, 199, 159, 243, 61, 31, 107, 243, 61, 31, 109, 243,
-    61, 31, 138, 243, 61, 31, 134, 243, 61, 31, 199, 95, 243, 61, 31, 197,
-    32, 243, 61, 31, 91, 228, 140, 234, 116, 1, 251, 190, 234, 116, 1, 248,
-    211, 234, 116, 1, 231, 38, 234, 116, 1, 237, 252, 234, 116, 1, 229, 245,
-    234, 116, 1, 193, 133, 234, 116, 1, 191, 91, 234, 116, 1, 229, 184, 234,
-    116, 1, 199, 69, 234, 116, 1, 191, 249, 234, 116, 1, 222, 75, 234, 116,
-    1, 220, 26, 234, 116, 1, 216, 193, 234, 116, 1, 212, 130, 234, 116, 1,
-    205, 148, 234, 116, 1, 250, 126, 234, 116, 1, 210, 63, 234, 116, 1, 205,
-    189, 234, 116, 1, 208, 37, 234, 116, 1, 207, 38, 234, 116, 1, 203, 69,
-    234, 116, 1, 199, 159, 234, 116, 34, 191, 90, 162, 3, 247, 119, 162, 3,
-    251, 71, 162, 3, 195, 35, 162, 3, 222, 237, 162, 3, 196, 75, 162, 1, 65,
-    162, 1, 252, 206, 162, 1, 68, 162, 1, 223, 199, 162, 1, 66, 162, 1, 196,
-    30, 162, 1, 117, 146, 162, 1, 117, 206, 110, 162, 1, 117, 172, 162, 1,
-    117, 219, 74, 162, 1, 71, 162, 1, 251, 236, 162, 1, 74, 162, 1, 250, 163,
-    162, 1, 155, 162, 1, 221, 215, 162, 1, 231, 240, 162, 1, 231, 91, 162, 1,
-    214, 68, 162, 1, 247, 160, 162, 1, 247, 1, 162, 1, 223, 32, 162, 1, 222,
-    252, 162, 1, 212, 101, 162, 1, 197, 132, 162, 1, 197, 120, 162, 1, 237,
-    191, 162, 1, 237, 175, 162, 1, 213, 79, 162, 1, 190, 190, 162, 1, 199,
-    49, 162, 1, 238, 32, 162, 1, 237, 68, 162, 1, 180, 162, 1, 168, 162, 1,
-    209, 228, 162, 1, 249, 153, 162, 1, 248, 203, 162, 1, 174, 162, 1, 170,
-    162, 1, 165, 162, 1, 173, 162, 1, 195, 188, 162, 1, 203, 165, 162, 1,
-    201, 175, 162, 1, 188, 162, 1, 140, 162, 1, 219, 73, 162, 1, 39, 44, 219,
-    62, 162, 1, 39, 44, 206, 109, 162, 1, 39, 44, 213, 61, 162, 18, 3, 252,
-    206, 162, 18, 3, 248, 197, 252, 206, 162, 18, 3, 68, 162, 18, 3, 223,
-    199, 162, 18, 3, 66, 162, 18, 3, 196, 30, 162, 18, 3, 117, 146, 162, 18,
-    3, 117, 206, 110, 162, 18, 3, 117, 172, 162, 18, 3, 117, 219, 74, 162,
-    18, 3, 71, 162, 18, 3, 251, 236, 162, 18, 3, 74, 162, 18, 3, 250, 163,
-    162, 195, 40, 162, 237, 238, 162, 55, 237, 238, 162, 208, 152, 236, 140,
-    162, 208, 152, 55, 236, 140, 162, 208, 152, 219, 112, 162, 208, 152, 238,
-    228, 164, 162, 208, 152, 218, 246, 162, 31, 107, 162, 31, 109, 162, 31,
-    138, 162, 31, 134, 162, 31, 149, 162, 31, 169, 162, 31, 175, 162, 31,
-    171, 162, 31, 178, 162, 31, 199, 95, 162, 31, 197, 32, 162, 31, 198, 249,
-    162, 31, 232, 135, 162, 31, 233, 15, 162, 31, 202, 120, 162, 31, 203,
-    241, 162, 31, 234, 153, 162, 31, 213, 169, 162, 31, 91, 228, 140, 162,
-    31, 91, 189, 162, 17, 191, 77, 162, 17, 107, 162, 17, 109, 162, 17, 138,
-    162, 17, 134, 162, 17, 149, 162, 17, 169, 162, 17, 175, 162, 17, 171,
-    162, 17, 178, 162, 3, 39, 44, 195, 40, 162, 1, 39, 44, 203, 40, 71, 162,
-    1, 39, 44, 203, 40, 74, 162, 18, 3, 39, 44, 203, 40, 71, 162, 18, 3, 39,
-    44, 203, 40, 74, 162, 1, 39, 44, 219, 73, 162, 31, 222, 196, 222, 99, 3,
-    247, 119, 222, 99, 3, 251, 71, 222, 99, 3, 195, 35, 222, 99, 1, 65, 222,
-    99, 1, 252, 206, 222, 99, 1, 68, 222, 99, 1, 223, 199, 222, 99, 1, 66,
-    222, 99, 1, 196, 30, 222, 99, 1, 71, 222, 99, 1, 251, 236, 222, 99, 1,
-    74, 222, 99, 1, 250, 163, 222, 99, 1, 155, 222, 99, 1, 221, 215, 222, 99,
-    1, 231, 240, 222, 99, 1, 231, 91, 222, 99, 1, 214, 68, 222, 99, 1, 247,
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-    237, 191, 222, 99, 1, 237, 180, 222, 99, 1, 237, 175, 222, 99, 1, 207, 6,
-    222, 99, 1, 213, 79, 222, 99, 1, 190, 190, 222, 99, 1, 199, 49, 222, 99,
-    1, 238, 32, 222, 99, 1, 237, 68, 222, 99, 1, 180, 222, 99, 1, 168, 222,
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-    174, 222, 99, 1, 170, 222, 99, 1, 165, 222, 99, 1, 173, 222, 99, 1, 195,
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-    223, 199, 222, 99, 18, 3, 66, 222, 99, 18, 3, 196, 30, 222, 99, 18, 3,
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-    205, 54, 77, 222, 99, 237, 238, 222, 99, 55, 237, 238, 222, 99, 18, 3,
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-    202, 20, 1, 220, 99, 202, 12, 202, 20, 1, 214, 237, 202, 12, 202, 20, 1,
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-    246, 251, 1, 248, 202, 246, 251, 1, 217, 151, 246, 251, 1, 191, 174, 246,
-    251, 1, 192, 140, 246, 251, 1, 207, 178, 246, 251, 1, 220, 125, 246, 251,
-    1, 193, 181, 246, 251, 1, 205, 197, 246, 251, 1, 230, 91, 246, 251, 18,
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-    1, 247, 1, 203, 129, 1, 223, 32, 203, 129, 1, 222, 252, 203, 129, 1, 212,
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-    203, 129, 1, 237, 175, 203, 129, 1, 213, 79, 203, 129, 1, 190, 190, 203,
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-    203, 129, 1, 173, 203, 129, 1, 219, 73, 203, 129, 1, 195, 188, 203, 129,
-    1, 203, 165, 203, 129, 1, 201, 175, 203, 129, 1, 188, 203, 129, 1, 140,
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-    129, 18, 3, 74, 203, 129, 18, 3, 250, 163, 203, 129, 3, 195, 40, 203,
-    129, 3, 250, 145, 203, 129, 3, 222, 237, 203, 129, 3, 196, 75, 203, 129,
-    211, 113, 203, 129, 237, 238, 203, 129, 55, 237, 238, 203, 129, 252, 68,
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-    203, 129, 17, 191, 77, 203, 129, 17, 107, 203, 129, 17, 109, 203, 129,
-    17, 138, 203, 129, 17, 134, 203, 129, 17, 149, 203, 129, 17, 169, 203,
-    129, 17, 175, 203, 129, 17, 171, 203, 129, 17, 178, 203, 129, 234, 146,
-    203, 129, 3, 202, 210, 203, 129, 229, 227, 203, 129, 239, 29, 56, 203,
-    129, 205, 54, 217, 55, 203, 129, 205, 54, 217, 54, 166, 251, 14, 17, 107,
-    166, 251, 14, 17, 109, 166, 251, 14, 17, 138, 166, 251, 14, 17, 134, 166,
-    251, 14, 17, 149, 166, 251, 14, 17, 169, 166, 251, 14, 17, 175, 166, 251,
-    14, 17, 171, 166, 251, 14, 17, 178, 166, 251, 14, 31, 199, 95, 166, 251,
-    14, 31, 197, 32, 166, 251, 14, 31, 198, 249, 166, 251, 14, 31, 232, 135,
-    166, 251, 14, 31, 233, 15, 166, 251, 14, 31, 202, 120, 166, 251, 14, 31,
-    203, 241, 166, 251, 14, 31, 234, 153, 166, 251, 14, 31, 213, 169, 166,
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-    221, 182, 1, 251, 236, 221, 182, 1, 74, 221, 182, 1, 250, 163, 221, 182,
-    1, 155, 221, 182, 1, 221, 215, 221, 182, 1, 231, 240, 221, 182, 1, 231,
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-    221, 182, 1, 247, 1, 221, 182, 1, 223, 32, 221, 182, 1, 222, 230, 221,
-    182, 1, 212, 101, 221, 182, 1, 197, 132, 221, 182, 1, 197, 120, 221, 182,
-    1, 237, 191, 221, 182, 1, 237, 175, 221, 182, 1, 213, 79, 221, 182, 1,
-    190, 190, 221, 182, 1, 199, 49, 221, 182, 1, 238, 32, 221, 182, 1, 237,
-    181, 221, 182, 1, 237, 68, 221, 182, 1, 180, 221, 182, 1, 168, 221, 182,
-    1, 209, 228, 221, 182, 1, 249, 153, 221, 182, 1, 249, 53, 221, 182, 1,
-    248, 203, 221, 182, 1, 174, 221, 182, 1, 170, 221, 182, 1, 165, 221, 182,
-    1, 173, 221, 182, 1, 195, 188, 221, 182, 1, 188, 221, 182, 1, 140, 221,
-    182, 1, 219, 73, 221, 182, 18, 3, 252, 206, 221, 182, 18, 3, 68, 221,
-    182, 18, 3, 223, 199, 221, 182, 18, 3, 66, 221, 182, 18, 3, 71, 221, 182,
-    18, 3, 251, 236, 221, 182, 18, 3, 74, 221, 182, 18, 3, 250, 163, 221,
-    182, 3, 251, 71, 221, 182, 3, 195, 40, 221, 182, 3, 212, 141, 221, 182,
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-    252, 68, 56, 221, 182, 3, 200, 206, 221, 182, 1, 208, 96, 221, 182, 1,
-    203, 40, 68, 221, 182, 18, 3, 117, 146, 215, 133, 1, 65, 215, 133, 1, 68,
-    215, 133, 1, 66, 215, 133, 1, 71, 215, 133, 1, 155, 215, 133, 1, 221,
-    215, 215, 133, 1, 231, 240, 215, 133, 1, 231, 91, 215, 133, 1, 247, 160,
-    215, 133, 1, 247, 1, 215, 133, 1, 223, 32, 215, 133, 1, 222, 230, 215,
-    133, 1, 212, 101, 215, 133, 1, 197, 132, 215, 133, 1, 197, 120, 215, 133,
-    1, 237, 191, 215, 133, 1, 237, 181, 215, 133, 1, 237, 175, 215, 133, 1,
-    213, 79, 215, 133, 1, 190, 190, 215, 133, 1, 199, 49, 215, 133, 1, 238,
-    32, 215, 133, 1, 237, 68, 215, 133, 1, 180, 215, 133, 1, 168, 215, 133,
-    1, 209, 228, 215, 133, 1, 249, 153, 215, 133, 1, 248, 203, 215, 133, 1,
-    174, 215, 133, 1, 170, 215, 133, 1, 165, 215, 133, 1, 173, 215, 133, 1,
-    195, 188, 215, 133, 1, 188, 215, 133, 1, 140, 215, 133, 1, 206, 109, 215,
-    133, 1, 207, 6, 215, 133, 205, 54, 77, 221, 172, 1, 65, 221, 172, 1, 252,
-    206, 221, 172, 1, 68, 221, 172, 1, 223, 199, 221, 172, 1, 66, 221, 172,
-    1, 196, 30, 221, 172, 1, 71, 221, 172, 1, 251, 236, 221, 172, 1, 74, 221,
-    172, 1, 250, 163, 221, 172, 1, 155, 221, 172, 1, 221, 215, 221, 172, 1,
-    231, 240, 221, 172, 1, 231, 127, 221, 172, 1, 231, 91, 221, 172, 1, 214,
-    68, 221, 172, 1, 247, 160, 221, 172, 1, 247, 1, 221, 172, 1, 223, 32,
-    221, 172, 1, 222, 230, 221, 172, 1, 222, 252, 221, 172, 1, 212, 101, 221,
-    172, 1, 197, 132, 221, 172, 1, 197, 120, 221, 172, 1, 237, 191, 221, 172,
-    1, 237, 181, 221, 172, 1, 206, 109, 221, 172, 1, 237, 175, 221, 172, 1,
-    213, 79, 221, 172, 1, 190, 190, 221, 172, 1, 199, 49, 221, 172, 1, 238,
-    32, 221, 172, 1, 237, 68, 221, 172, 1, 180, 221, 172, 1, 168, 221, 172,
-    1, 209, 228, 221, 172, 1, 249, 153, 221, 172, 1, 249, 53, 221, 172, 1,
-    248, 203, 221, 172, 1, 174, 221, 172, 1, 170, 221, 172, 1, 165, 221, 172,
-    1, 173, 221, 172, 1, 195, 188, 221, 172, 1, 203, 165, 221, 172, 1, 188,
-    221, 172, 1, 140, 221, 172, 3, 251, 71, 221, 172, 18, 3, 252, 206, 221,
-    172, 18, 3, 68, 221, 172, 18, 3, 223, 199, 221, 172, 18, 3, 66, 221, 172,
-    18, 3, 196, 30, 221, 172, 18, 3, 71, 221, 172, 18, 3, 251, 236, 221, 172,
-    18, 3, 74, 221, 172, 18, 3, 250, 163, 221, 172, 3, 212, 141, 221, 172, 3,
-    195, 40, 221, 172, 17, 191, 77, 221, 172, 17, 107, 221, 172, 17, 109,
-    221, 172, 17, 138, 221, 172, 17, 134, 221, 172, 17, 149, 221, 172, 17,
-    169, 221, 172, 17, 175, 221, 172, 17, 171, 221, 172, 17, 178, 230, 219,
-    3, 33, 251, 72, 58, 230, 219, 3, 247, 119, 230, 219, 3, 251, 71, 230,
-    219, 3, 195, 35, 230, 219, 1, 65, 230, 219, 1, 252, 206, 230, 219, 1, 68,
-    230, 219, 1, 223, 199, 230, 219, 1, 66, 230, 219, 1, 196, 30, 230, 219,
-    1, 117, 146, 230, 219, 1, 117, 172, 230, 219, 1, 234, 188, 230, 219, 1,
-    251, 236, 230, 219, 1, 211, 87, 230, 219, 1, 250, 163, 230, 219, 1, 155,
-    230, 219, 1, 221, 215, 230, 219, 1, 231, 240, 230, 219, 1, 231, 91, 230,
-    219, 1, 214, 68, 230, 219, 1, 247, 160, 230, 219, 1, 247, 1, 230, 219, 1,
-    223, 32, 230, 219, 1, 222, 252, 230, 219, 1, 212, 101, 230, 219, 1, 197,
-    132, 230, 219, 1, 197, 120, 230, 219, 1, 237, 191, 230, 219, 1, 237, 175,
-    230, 219, 1, 213, 79, 230, 219, 1, 190, 190, 230, 219, 1, 199, 49, 230,
-    219, 1, 238, 32, 230, 219, 1, 237, 68, 230, 219, 1, 180, 230, 219, 1,
-    168, 230, 219, 1, 209, 228, 230, 219, 1, 249, 153, 230, 219, 1, 248, 203,
-    230, 219, 1, 174, 230, 219, 1, 170, 230, 219, 1, 165, 230, 219, 1, 173,
-    230, 219, 1, 219, 73, 230, 219, 1, 195, 188, 230, 219, 1, 203, 165, 230,
-    219, 1, 201, 175, 230, 219, 1, 188, 230, 219, 1, 140, 33, 248, 165, 60,
-    230, 219, 3, 212, 141, 230, 219, 3, 250, 145, 230, 219, 18, 3, 252, 206,
-    230, 219, 18, 3, 68, 230, 219, 18, 3, 223, 199, 230, 219, 18, 3, 66, 230,
-    219, 18, 3, 196, 30, 230, 219, 18, 3, 117, 146, 230, 219, 18, 3, 117,
-    206, 110, 230, 219, 18, 3, 234, 188, 230, 219, 18, 3, 251, 236, 230, 219,
-    18, 3, 211, 87, 230, 219, 18, 3, 250, 163, 230, 219, 3, 195, 40, 230,
-    219, 211, 113, 230, 219, 250, 164, 219, 198, 77, 230, 219, 3, 209, 79,
-    230, 219, 1, 195, 150, 251, 71, 230, 219, 1, 195, 150, 55, 251, 71, 230,
-    219, 1, 117, 206, 110, 230, 219, 1, 117, 219, 74, 230, 219, 18, 3, 117,
-    172, 230, 219, 18, 3, 117, 219, 74, 33, 230, 219, 17, 191, 77, 33, 230,
-    219, 17, 107, 33, 230, 219, 17, 109, 33, 230, 219, 17, 138, 33, 230, 219,
-    17, 134, 33, 230, 219, 17, 149, 33, 230, 219, 17, 169, 33, 230, 219, 1,
-    65, 33, 230, 219, 1, 155, 33, 230, 219, 1, 180, 33, 230, 219, 1, 195, 69,
-    33, 230, 219, 1, 168, 214, 78, 1, 65, 214, 78, 1, 252, 206, 214, 78, 1,
-    68, 214, 78, 1, 223, 199, 214, 78, 1, 66, 214, 78, 1, 196, 30, 214, 78,
-    1, 117, 146, 214, 78, 1, 117, 206, 110, 214, 78, 1, 117, 172, 214, 78, 1,
-    117, 219, 74, 214, 78, 1, 71, 214, 78, 1, 251, 236, 214, 78, 1, 74, 214,
-    78, 1, 250, 163, 214, 78, 1, 155, 214, 78, 1, 221, 215, 214, 78, 1, 231,
-    240, 214, 78, 1, 231, 91, 214, 78, 1, 214, 68, 214, 78, 1, 214, 17, 214,
-    78, 1, 247, 160, 214, 78, 1, 247, 1, 214, 78, 1, 223, 32, 214, 78, 1,
-    222, 252, 214, 78, 1, 212, 101, 214, 78, 1, 212, 83, 214, 78, 1, 197,
-    132, 214, 78, 1, 197, 120, 214, 78, 1, 237, 191, 214, 78, 1, 237, 175,
-    214, 78, 1, 213, 79, 214, 78, 1, 190, 190, 214, 78, 1, 199, 49, 214, 78,
-    1, 238, 32, 214, 78, 1, 237, 68, 214, 78, 1, 180, 214, 78, 1, 213, 224,
-    214, 78, 1, 168, 214, 78, 1, 209, 228, 214, 78, 1, 249, 153, 214, 78, 1,
-    248, 203, 214, 78, 1, 174, 214, 78, 1, 216, 103, 214, 78, 1, 170, 214,
-    78, 1, 165, 214, 78, 1, 207, 6, 214, 78, 1, 173, 214, 78, 1, 219, 159,
-    214, 78, 1, 193, 190, 214, 78, 1, 203, 165, 214, 78, 1, 201, 175, 214,
-    78, 1, 188, 214, 78, 1, 140, 214, 78, 18, 3, 252, 206, 214, 78, 18, 3,
-    68, 214, 78, 18, 3, 223, 199, 214, 78, 18, 3, 66, 214, 78, 18, 3, 196,
-    30, 214, 78, 18, 3, 117, 146, 214, 78, 18, 3, 117, 206, 110, 214, 78, 18,
-    3, 117, 172, 214, 78, 18, 3, 117, 219, 74, 214, 78, 18, 3, 71, 214, 78,
-    18, 3, 251, 236, 214, 78, 18, 3, 74, 214, 78, 18, 3, 250, 163, 214, 78,
-    3, 195, 40, 214, 78, 3, 247, 119, 214, 78, 3, 251, 71, 214, 78, 3, 195,
-    35, 214, 78, 3, 212, 141, 214, 78, 3, 250, 145, 214, 78, 3, 53, 251, 71,
-    214, 78, 211, 113, 214, 78, 202, 209, 214, 78, 237, 238, 214, 78, 55,
-    237, 238, 214, 78, 242, 74, 214, 78, 231, 204, 233, 3, 214, 78, 252, 68,
-    56, 214, 78, 17, 191, 77, 214, 78, 17, 107, 214, 78, 17, 109, 214, 78,
-    17, 138, 214, 78, 17, 134, 214, 78, 17, 149, 214, 78, 17, 169, 214, 78,
-    17, 175, 214, 78, 17, 171, 214, 78, 17, 178, 214, 78, 55, 242, 74, 214,
-    78, 209, 107, 77, 214, 78, 223, 119, 56, 214, 78, 205, 138, 77, 214, 78,
-    1, 195, 150, 251, 71, 214, 78, 3, 222, 237, 214, 78, 3, 196, 75, 198,
-    129, 251, 100, 198, 129, 1, 65, 198, 129, 1, 252, 206, 198, 129, 1, 68,
-    198, 129, 1, 223, 199, 198, 129, 1, 66, 198, 129, 1, 196, 30, 198, 129,
-    1, 117, 146, 198, 129, 1, 117, 206, 110, 198, 129, 1, 117, 172, 198, 129,
-    1, 117, 219, 74, 198, 129, 1, 71, 198, 129, 1, 251, 236, 198, 129, 1, 74,
-    198, 129, 1, 250, 163, 198, 129, 1, 155, 198, 129, 1, 221, 215, 198, 129,
-    1, 231, 240, 198, 129, 1, 231, 91, 198, 129, 1, 214, 68, 198, 129, 1,
-    247, 160, 198, 129, 1, 247, 1, 198, 129, 1, 223, 32, 198, 129, 1, 222,
-    252, 198, 129, 1, 212, 101, 198, 129, 1, 197, 132, 198, 129, 1, 197, 120,
-    198, 129, 1, 237, 191, 198, 129, 1, 237, 175, 198, 129, 1, 213, 79, 198,
-    129, 1, 190, 190, 198, 129, 1, 199, 49, 198, 129, 1, 238, 32, 198, 129,
-    1, 237, 68, 198, 129, 1, 180, 198, 129, 1, 168, 198, 129, 1, 209, 228,
-    198, 129, 1, 249, 153, 198, 129, 1, 248, 203, 198, 129, 1, 174, 198, 129,
-    1, 170, 198, 129, 1, 165, 198, 129, 1, 173, 198, 129, 1, 195, 188, 198,
-    129, 1, 203, 165, 198, 129, 1, 201, 175, 198, 129, 1, 188, 198, 129, 1,
-    140, 198, 129, 18, 3, 252, 206, 198, 129, 18, 3, 68, 198, 129, 18, 3,
-    223, 199, 198, 129, 18, 3, 66, 198, 129, 18, 3, 196, 30, 198, 129, 18, 3,
-    117, 146, 198, 129, 18, 3, 117, 206, 110, 198, 129, 18, 3, 117, 172, 198,
-    129, 18, 3, 117, 219, 74, 198, 129, 18, 3, 71, 198, 129, 18, 3, 203, 40,
-    71, 198, 129, 18, 3, 251, 236, 198, 129, 18, 3, 74, 198, 129, 18, 3, 203,
-    40, 74, 198, 129, 18, 3, 250, 163, 198, 129, 3, 247, 119, 198, 129, 3,
-    251, 71, 198, 129, 3, 195, 35, 198, 129, 3, 195, 40, 198, 129, 3, 212,
-    141, 198, 129, 3, 250, 145, 198, 129, 230, 137, 198, 129, 252, 68, 56,
-    198, 129, 211, 113, 198, 129, 17, 191, 77, 198, 129, 17, 107, 198, 129,
-    17, 109, 198, 129, 17, 138, 198, 129, 17, 134, 198, 129, 17, 149, 198,
-    129, 17, 169, 198, 129, 17, 175, 198, 129, 17, 171, 198, 129, 17, 178,
-    202, 211, 1, 65, 202, 211, 1, 252, 206, 202, 211, 1, 68, 202, 211, 1,
-    223, 199, 202, 211, 1, 66, 202, 211, 1, 196, 30, 202, 211, 1, 117, 146,
-    202, 211, 1, 117, 206, 110, 202, 211, 1, 117, 172, 202, 211, 1, 117, 219,
-    74, 202, 211, 1, 71, 202, 211, 1, 251, 236, 202, 211, 1, 74, 202, 211, 1,
-    250, 163, 202, 211, 1, 155, 202, 211, 1, 221, 215, 202, 211, 1, 231, 240,
-    202, 211, 1, 231, 91, 202, 211, 1, 214, 68, 202, 211, 1, 247, 160, 202,
-    211, 1, 247, 1, 202, 211, 1, 223, 32, 202, 211, 1, 222, 252, 202, 211, 1,
-    212, 101, 202, 211, 1, 197, 132, 202, 211, 1, 197, 120, 202, 211, 1, 237,
-    191, 202, 211, 1, 237, 175, 202, 211, 1, 213, 79, 202, 211, 1, 190, 190,
-    202, 211, 1, 199, 49, 202, 211, 1, 238, 32, 202, 211, 1, 237, 68, 202,
-    211, 1, 180, 202, 211, 1, 168, 202, 211, 1, 209, 228, 202, 211, 1, 249,
-    153, 202, 211, 1, 248, 203, 202, 211, 1, 174, 202, 211, 1, 170, 202, 211,
-    1, 165, 202, 211, 1, 173, 202, 211, 1, 195, 188, 202, 211, 1, 203, 165,
-    202, 211, 1, 201, 175, 202, 211, 1, 188, 202, 211, 1, 140, 202, 211, 18,
-    3, 252, 206, 202, 211, 18, 3, 68, 202, 211, 18, 3, 223, 199, 202, 211,
-    18, 3, 66, 202, 211, 18, 3, 196, 30, 202, 211, 18, 3, 117, 146, 202, 211,
-    18, 3, 117, 206, 110, 202, 211, 18, 3, 71, 202, 211, 18, 3, 251, 236,
-    202, 211, 18, 3, 74, 202, 211, 18, 3, 250, 163, 202, 211, 3, 247, 119,
-    202, 211, 3, 251, 71, 202, 211, 3, 195, 35, 202, 211, 3, 195, 40, 202,
-    211, 3, 212, 141, 202, 211, 3, 202, 210, 202, 211, 237, 238, 202, 211,
-    55, 237, 238, 202, 211, 204, 11, 236, 140, 202, 211, 204, 11, 164, 202,
-    211, 207, 46, 217, 55, 202, 211, 207, 46, 217, 54, 202, 211, 207, 46,
-    217, 53, 202, 211, 234, 95, 79, 199, 54, 77, 202, 211, 205, 54, 87, 4,
-    197, 236, 23, 196, 221, 211, 41, 202, 211, 205, 54, 87, 4, 197, 236, 23,
-    235, 138, 238, 226, 202, 211, 205, 54, 87, 4, 207, 120, 23, 235, 138,
-    238, 226, 202, 211, 205, 54, 87, 4, 207, 120, 23, 235, 138, 55, 238, 226,
-    202, 211, 205, 54, 87, 4, 207, 120, 23, 235, 138, 197, 225, 238, 226,
-    202, 211, 205, 54, 87, 55, 206, 188, 202, 211, 205, 54, 87, 55, 206, 189,
-    4, 207, 119, 202, 211, 205, 54, 87, 4, 55, 238, 226, 202, 211, 205, 54,
-    87, 4, 197, 225, 238, 226, 202, 211, 205, 54, 87, 4, 208, 26, 238, 226,
-    202, 211, 205, 54, 87, 4, 204, 8, 238, 226, 202, 211, 205, 54, 87, 4,
-    243, 8, 23, 207, 119, 202, 211, 205, 54, 87, 4, 243, 8, 23, 105, 234, 97,
-    202, 211, 205, 54, 87, 4, 243, 8, 23, 232, 128, 234, 97, 202, 211, 1,
-    198, 226, 251, 157, 68, 202, 211, 1, 197, 15, 251, 157, 68, 202, 211, 1,
-    197, 15, 251, 157, 223, 199, 202, 211, 1, 251, 157, 66, 202, 211, 18, 3,
-    251, 157, 66, 202, 211, 18, 3, 251, 157, 196, 30, 215, 253, 1, 65, 215,
-    253, 1, 252, 206, 215, 253, 1, 68, 215, 253, 1, 223, 199, 215, 253, 1,
-    66, 215, 253, 1, 196, 30, 215, 253, 1, 117, 146, 215, 253, 1, 117, 206,
-    110, 215, 253, 1, 117, 172, 215, 253, 1, 117, 219, 74, 215, 253, 1, 71,
-    215, 253, 1, 251, 236, 215, 253, 1, 74, 215, 253, 1, 250, 163, 215, 253,
-    1, 155, 215, 253, 1, 221, 215, 215, 253, 1, 231, 240, 215, 253, 1, 231,
-    91, 215, 253, 1, 214, 68, 215, 253, 1, 247, 160, 215, 253, 1, 247, 1,
-    215, 253, 1, 223, 32, 215, 253, 1, 222, 252, 215, 253, 1, 212, 101, 215,
-    253, 1, 197, 132, 215, 253, 1, 197, 120, 215, 253, 1, 237, 191, 215, 253,
-    1, 237, 175, 215, 253, 1, 213, 79, 215, 253, 1, 190, 190, 215, 253, 1,
-    199, 49, 215, 253, 1, 238, 32, 215, 253, 1, 237, 68, 215, 253, 1, 180,
-    215, 253, 1, 168, 215, 253, 1, 209, 228, 215, 253, 1, 249, 153, 215, 253,
-    1, 248, 203, 215, 253, 1, 174, 215, 253, 1, 170, 215, 253, 1, 165, 215,
-    253, 1, 173, 215, 253, 1, 195, 188, 215, 253, 1, 203, 165, 215, 253, 1,
-    201, 175, 215, 253, 1, 188, 215, 253, 1, 140, 215, 253, 1, 219, 73, 215,
-    253, 18, 3, 252, 206, 215, 253, 18, 3, 68, 215, 253, 18, 3, 223, 199,
-    215, 253, 18, 3, 66, 215, 253, 18, 3, 196, 30, 215, 253, 18, 3, 117, 146,
-    215, 253, 18, 3, 117, 206, 110, 215, 253, 18, 3, 117, 172, 215, 253, 18,
-    3, 117, 219, 74, 215, 253, 18, 3, 71, 215, 253, 18, 3, 251, 236, 215,
-    253, 18, 3, 74, 215, 253, 18, 3, 250, 163, 215, 253, 3, 251, 71, 215,
-    253, 3, 195, 35, 215, 253, 3, 195, 40, 215, 253, 3, 251, 11, 215, 253,
-    237, 238, 215, 253, 55, 237, 238, 215, 253, 252, 68, 56, 215, 253, 3,
-    228, 127, 215, 253, 17, 191, 77, 215, 253, 17, 107, 215, 253, 17, 109,
-    215, 253, 17, 138, 215, 253, 17, 134, 215, 253, 17, 149, 215, 253, 17,
-    169, 215, 253, 17, 175, 215, 253, 17, 171, 215, 253, 17, 178, 104, 248,
-    159, 4, 211, 42, 104, 206, 122, 248, 158, 104, 55, 248, 159, 4, 211, 42,
-    104, 197, 225, 248, 159, 4, 211, 42, 104, 248, 159, 4, 55, 211, 42, 104,
-    206, 122, 248, 159, 4, 211, 42, 104, 206, 122, 248, 159, 4, 55, 211, 42,
-    104, 223, 93, 248, 158, 104, 223, 93, 248, 159, 4, 55, 211, 42, 104, 200,
-    134, 248, 158, 104, 200, 134, 248, 159, 4, 211, 42, 104, 200, 134, 248,
-    159, 4, 55, 211, 42, 104, 153, 200, 134, 248, 159, 4, 55, 211, 42, 199,
-    205, 1, 65, 199, 205, 1, 252, 206, 199, 205, 1, 68, 199, 205, 1, 223,
-    199, 199, 205, 1, 66, 199, 205, 1, 196, 30, 199, 205, 1, 71, 199, 205, 1,
-    251, 236, 199, 205, 1, 74, 199, 205, 1, 250, 163, 199, 205, 1, 155, 199,
-    205, 1, 221, 215, 199, 205, 1, 231, 240, 199, 205, 1, 231, 91, 199, 205,
-    1, 214, 68, 199, 205, 1, 247, 160, 199, 205, 1, 247, 1, 199, 205, 1, 223,
-    32, 199, 205, 1, 222, 252, 199, 205, 1, 212, 101, 199, 205, 1, 197, 132,
-    199, 205, 1, 197, 120, 199, 205, 1, 237, 191, 199, 205, 1, 237, 175, 199,
-    205, 1, 213, 79, 199, 205, 1, 190, 190, 199, 205, 1, 199, 49, 199, 205,
-    1, 238, 32, 199, 205, 1, 237, 68, 199, 205, 1, 180, 199, 205, 1, 168,
-    199, 205, 1, 209, 228, 199, 205, 1, 249, 153, 199, 205, 1, 248, 203, 199,
-    205, 1, 174, 199, 205, 1, 170, 199, 205, 1, 165, 199, 205, 1, 173, 199,
-    205, 1, 195, 188, 199, 205, 1, 203, 165, 199, 205, 1, 188, 199, 205, 1,
-    140, 199, 205, 1, 206, 109, 199, 205, 3, 251, 71, 199, 205, 3, 195, 35,
-    199, 205, 18, 3, 252, 206, 199, 205, 18, 3, 68, 199, 205, 18, 3, 223,
-    199, 199, 205, 18, 3, 66, 199, 205, 18, 3, 196, 30, 199, 205, 18, 3, 71,
-    199, 205, 18, 3, 251, 236, 199, 205, 18, 3, 74, 199, 205, 18, 3, 250,
-    163, 199, 205, 3, 195, 40, 199, 205, 3, 212, 141, 199, 205, 1, 251, 14,
-    221, 215, 199, 205, 252, 68, 56, 199, 205, 17, 191, 77, 199, 205, 17,
-    107, 199, 205, 17, 109, 199, 205, 17, 138, 199, 205, 17, 134, 199, 205,
-    17, 149, 199, 205, 17, 169, 199, 205, 17, 175, 199, 205, 17, 171, 199,
-    205, 17, 178, 251, 240, 1, 155, 251, 240, 1, 221, 215, 251, 240, 1, 214,
-    68, 251, 240, 1, 180, 251, 240, 1, 190, 190, 251, 240, 1, 251, 157, 190,
-    190, 251, 240, 1, 168, 251, 240, 1, 209, 228, 251, 240, 1, 249, 153, 251,
-    240, 1, 174, 251, 240, 1, 223, 32, 251, 240, 1, 247, 1, 251, 240, 1, 199,
-    49, 251, 240, 1, 165, 251, 240, 1, 173, 251, 240, 1, 188, 251, 240, 1,
-    212, 101, 251, 240, 1, 140, 251, 240, 1, 65, 251, 240, 1, 238, 32, 251,
-    240, 1, 237, 68, 251, 240, 1, 231, 240, 251, 240, 1, 251, 157, 231, 240,
-    251, 240, 1, 231, 91, 251, 240, 1, 248, 203, 251, 240, 1, 222, 252, 251,
-    240, 1, 251, 157, 249, 153, 251, 240, 120, 3, 216, 217, 173, 251, 240,
-    120, 3, 216, 217, 165, 251, 240, 120, 3, 216, 217, 219, 133, 165, 251,
-    240, 18, 3, 65, 251, 240, 18, 3, 252, 206, 251, 240, 18, 3, 68, 251, 240,
-    18, 3, 223, 199, 251, 240, 18, 3, 66, 251, 240, 18, 3, 196, 30, 251, 240,
-    18, 3, 71, 251, 240, 18, 3, 250, 140, 251, 240, 18, 3, 74, 251, 240, 18,
-    3, 251, 236, 251, 240, 18, 3, 251, 149, 251, 240, 3, 221, 143, 251, 240,
-    17, 191, 77, 251, 240, 17, 107, 251, 240, 17, 109, 251, 240, 17, 138,
-    251, 240, 17, 134, 251, 240, 17, 149, 251, 240, 17, 169, 251, 240, 17,
-    175, 251, 240, 17, 171, 251, 240, 17, 178, 251, 240, 31, 199, 95, 251,
-    240, 31, 197, 32, 251, 240, 3, 2, 205, 53, 251, 240, 3, 205, 53, 251,
-    240, 3, 206, 53, 251, 240, 16, 195, 69, 251, 240, 1, 247, 160, 251, 240,
-    1, 197, 132, 251, 240, 1, 197, 120, 251, 240, 1, 237, 191, 251, 240, 1,
-    237, 175, 251, 240, 1, 213, 79, 251, 240, 1, 219, 73, 236, 161, 1, 65,
-    236, 161, 1, 252, 206, 236, 161, 1, 68, 236, 161, 1, 223, 199, 236, 161,
-    1, 66, 236, 161, 1, 196, 30, 236, 161, 1, 71, 236, 161, 1, 251, 236, 236,
-    161, 1, 74, 236, 161, 1, 250, 163, 236, 161, 1, 155, 236, 161, 1, 221,
-    215, 236, 161, 1, 231, 240, 236, 161, 1, 231, 91, 236, 161, 1, 214, 68,
-    236, 161, 1, 247, 160, 236, 161, 1, 247, 1, 236, 161, 1, 223, 32, 236,
-    161, 1, 222, 252, 236, 161, 1, 212, 101, 236, 161, 1, 197, 132, 236, 161,
-    1, 197, 120, 236, 161, 1, 237, 191, 236, 161, 1, 237, 175, 236, 161, 1,
-    213, 79, 236, 161, 1, 190, 190, 236, 161, 1, 199, 49, 236, 161, 1, 238,
-    32, 236, 161, 1, 237, 68, 236, 161, 1, 180, 236, 161, 1, 168, 236, 161,
-    1, 209, 228, 236, 161, 1, 249, 153, 236, 161, 1, 248, 203, 236, 161, 1,
-    174, 236, 161, 1, 170, 236, 161, 1, 165, 236, 161, 1, 173, 236, 161, 1,
-    195, 188, 236, 161, 1, 203, 165, 236, 161, 1, 201, 175, 236, 161, 1, 188,
-    236, 161, 1, 140, 236, 161, 1, 206, 109, 236, 161, 18, 3, 252, 206, 236,
-    161, 18, 3, 68, 236, 161, 18, 3, 223, 199, 236, 161, 18, 3, 66, 236, 161,
-    18, 3, 196, 30, 236, 161, 18, 3, 117, 146, 236, 161, 18, 3, 117, 206,
-    110, 236, 161, 18, 3, 71, 236, 161, 18, 3, 251, 236, 236, 161, 18, 3, 74,
-    236, 161, 18, 3, 250, 163, 236, 161, 3, 251, 71, 236, 161, 3, 195, 35,
-    236, 161, 3, 195, 40, 236, 161, 3, 212, 141, 236, 161, 252, 68, 56, 193,
-    156, 242, 253, 6, 1, 214, 67, 193, 156, 242, 253, 6, 1, 65, 193, 156,
-    242, 253, 6, 1, 193, 86, 193, 156, 242, 253, 6, 1, 191, 225, 193, 156,
-    242, 253, 6, 1, 170, 193, 156, 242, 253, 6, 1, 192, 12, 193, 156, 242,
-    253, 6, 1, 223, 199, 193, 156, 242, 253, 6, 1, 196, 30, 193, 156, 242,
-    253, 6, 1, 71, 193, 156, 242, 253, 6, 1, 74, 193, 156, 242, 253, 6, 1,
-    251, 122, 193, 156, 242, 253, 6, 1, 231, 240, 193, 156, 242, 253, 6, 1,
-    221, 67, 193, 156, 242, 253, 6, 1, 234, 66, 193, 156, 242, 253, 6, 1,
-    191, 204, 193, 156, 242, 253, 6, 1, 196, 160, 193, 156, 242, 253, 6, 1,
-    234, 85, 193, 156, 242, 253, 6, 1, 211, 154, 193, 156, 242, 253, 6, 1,
-    197, 127, 193, 156, 242, 253, 6, 1, 212, 127, 193, 156, 242, 253, 6, 1,
-    238, 32, 193, 156, 242, 253, 6, 1, 250, 182, 193, 156, 242, 253, 6, 1,
-    251, 149, 193, 156, 242, 253, 6, 1, 248, 10, 193, 156, 242, 253, 6, 1,
-    208, 165, 193, 156, 242, 253, 6, 1, 229, 115, 193, 156, 242, 253, 6, 1,
-    229, 3, 193, 156, 242, 253, 6, 1, 228, 185, 193, 156, 242, 253, 6, 1,
-    230, 19, 193, 156, 242, 253, 6, 1, 201, 126, 193, 156, 242, 253, 6, 1,
-    202, 193, 193, 156, 242, 253, 6, 1, 195, 25, 193, 156, 242, 253, 2, 1,
-    214, 67, 193, 156, 242, 253, 2, 1, 65, 193, 156, 242, 253, 2, 1, 193, 86,
-    193, 156, 242, 253, 2, 1, 191, 225, 193, 156, 242, 253, 2, 1, 170, 193,
-    156, 242, 253, 2, 1, 192, 12, 193, 156, 242, 253, 2, 1, 223, 199, 193,
-    156, 242, 253, 2, 1, 196, 30, 193, 156, 242, 253, 2, 1, 71, 193, 156,
-    242, 253, 2, 1, 74, 193, 156, 242, 253, 2, 1, 251, 122, 193, 156, 242,
-    253, 2, 1, 231, 240, 193, 156, 242, 253, 2, 1, 221, 67, 193, 156, 242,
-    253, 2, 1, 234, 66, 193, 156, 242, 253, 2, 1, 191, 204, 193, 156, 242,
-    253, 2, 1, 196, 160, 193, 156, 242, 253, 2, 1, 234, 85, 193, 156, 242,
-    253, 2, 1, 211, 154, 193, 156, 242, 253, 2, 1, 197, 127, 193, 156, 242,
-    253, 2, 1, 212, 127, 193, 156, 242, 253, 2, 1, 238, 32, 193, 156, 242,
-    253, 2, 1, 250, 182, 193, 156, 242, 253, 2, 1, 251, 149, 193, 156, 242,
-    253, 2, 1, 248, 10, 193, 156, 242, 253, 2, 1, 208, 165, 193, 156, 242,
-    253, 2, 1, 229, 115, 193, 156, 242, 253, 2, 1, 229, 3, 193, 156, 242,
-    253, 2, 1, 228, 185, 193, 156, 242, 253, 2, 1, 230, 19, 193, 156, 242,
-    253, 2, 1, 201, 126, 193, 156, 242, 253, 2, 1, 202, 193, 193, 156, 242,
-    253, 2, 1, 195, 25, 193, 156, 242, 253, 17, 191, 77, 193, 156, 242, 253,
-    17, 107, 193, 156, 242, 253, 17, 109, 193, 156, 242, 253, 17, 138, 193,
-    156, 242, 253, 17, 134, 193, 156, 242, 253, 17, 149, 193, 156, 242, 253,
-    17, 169, 193, 156, 242, 253, 17, 175, 193, 156, 242, 253, 17, 171, 193,
-    156, 242, 253, 17, 178, 193, 156, 242, 253, 31, 199, 95, 193, 156, 242,
-    253, 31, 197, 32, 193, 156, 242, 253, 31, 198, 249, 193, 156, 242, 253,
-    31, 232, 135, 193, 156, 242, 253, 31, 233, 15, 193, 156, 242, 253, 31,
-    202, 120, 193, 156, 242, 253, 31, 203, 241, 193, 156, 242, 253, 31, 234,
-    153, 193, 156, 242, 253, 31, 213, 169, 193, 156, 242, 253, 211, 113, 236,
-    209, 251, 209, 1, 65, 236, 209, 251, 209, 1, 252, 206, 236, 209, 251,
-    209, 1, 68, 236, 209, 251, 209, 1, 223, 199, 236, 209, 251, 209, 1, 66,
-    236, 209, 251, 209, 1, 196, 30, 236, 209, 251, 209, 1, 71, 236, 209, 251,
-    209, 1, 74, 236, 209, 251, 209, 1, 155, 236, 209, 251, 209, 1, 221, 215,
-    236, 209, 251, 209, 1, 231, 240, 236, 209, 251, 209, 1, 231, 91, 236,
-    209, 251, 209, 1, 214, 68, 236, 209, 251, 209, 1, 247, 160, 236, 209,
-    251, 209, 1, 247, 1, 236, 209, 251, 209, 1, 223, 32, 236, 209, 251, 209,
-    1, 212, 101, 236, 209, 251, 209, 1, 197, 132, 236, 209, 251, 209, 1, 237,
-    191, 236, 209, 251, 209, 1, 237, 175, 236, 209, 251, 209, 1, 213, 79,
-    236, 209, 251, 209, 1, 190, 190, 236, 209, 251, 209, 1, 199, 49, 236,
-    209, 251, 209, 1, 238, 32, 236, 209, 251, 209, 1, 237, 68, 236, 209, 251,
-    209, 1, 180, 236, 209, 251, 209, 1, 168, 236, 209, 251, 209, 1, 209, 228,
-    236, 209, 251, 209, 1, 249, 153, 236, 209, 251, 209, 1, 248, 203, 236,
-    209, 251, 209, 1, 174, 236, 209, 251, 209, 1, 170, 236, 209, 251, 209, 1,
-    191, 175, 236, 209, 251, 209, 1, 165, 236, 209, 251, 209, 1, 173, 236,
-    209, 251, 209, 1, 195, 188, 236, 209, 251, 209, 1, 203, 165, 236, 209,
-    251, 209, 1, 201, 175, 236, 209, 251, 209, 1, 188, 236, 209, 251, 209, 1,
-    140, 236, 209, 251, 209, 1, 219, 73, 236, 209, 251, 209, 1, 191, 123,
-    236, 209, 251, 209, 18, 3, 252, 206, 236, 209, 251, 209, 18, 3, 68, 236,
-    209, 251, 209, 18, 3, 223, 199, 236, 209, 251, 209, 18, 3, 66, 236, 209,
-    251, 209, 18, 3, 196, 30, 236, 209, 251, 209, 18, 3, 71, 236, 209, 251,
-    209, 18, 3, 251, 236, 236, 209, 251, 209, 18, 3, 74, 236, 209, 251, 209,
-    3, 251, 71, 236, 209, 251, 209, 3, 247, 119, 236, 209, 251, 209, 3, 230,
-    72, 236, 209, 251, 209, 195, 40, 236, 209, 251, 209, 208, 227, 214, 214,
-    56, 236, 209, 251, 209, 216, 217, 170, 236, 209, 251, 209, 89, 165, 236,
-    209, 251, 209, 216, 217, 165, 236, 209, 251, 209, 3, 212, 141, 236, 209,
-    251, 209, 55, 237, 238, 236, 209, 251, 209, 231, 204, 233, 3, 236, 209,
-    251, 209, 234, 95, 79, 199, 54, 77, 236, 209, 251, 209, 17, 191, 77, 236,
-    209, 251, 209, 17, 107, 236, 209, 251, 209, 17, 109, 236, 209, 251, 209,
-    17, 138, 236, 209, 251, 209, 17, 134, 236, 209, 251, 209, 17, 149, 236,
-    209, 251, 209, 17, 169, 236, 209, 251, 209, 17, 175, 236, 209, 251, 209,
-    17, 171, 236, 209, 251, 209, 17, 178, 214, 223, 1, 65, 214, 223, 1, 252,
-    206, 214, 223, 1, 68, 214, 223, 1, 223, 199, 214, 223, 1, 66, 214, 223,
-    1, 196, 30, 214, 223, 1, 117, 146, 214, 223, 1, 117, 206, 110, 214, 223,
-    1, 71, 214, 223, 1, 251, 236, 214, 223, 1, 74, 214, 223, 1, 250, 163,
-    214, 223, 1, 155, 214, 223, 1, 221, 215, 214, 223, 1, 231, 240, 214, 223,
-    1, 231, 91, 214, 223, 1, 214, 68, 214, 223, 1, 247, 160, 214, 223, 1,
-    247, 1, 214, 223, 1, 223, 32, 214, 223, 1, 222, 252, 214, 223, 1, 212,
-    101, 214, 223, 1, 197, 132, 214, 223, 1, 197, 120, 214, 223, 1, 237, 191,
-    214, 223, 1, 237, 175, 214, 223, 1, 213, 79, 214, 223, 1, 190, 190, 214,
-    223, 1, 199, 49, 214, 223, 1, 238, 32, 214, 223, 1, 237, 68, 214, 223, 1,
-    180, 214, 223, 1, 168, 214, 223, 1, 209, 228, 214, 223, 1, 249, 153, 214,
-    223, 1, 248, 203, 214, 223, 1, 174, 214, 223, 1, 170, 214, 223, 1, 165,
-    214, 223, 1, 173, 214, 223, 1, 195, 188, 214, 223, 1, 203, 165, 214, 223,
-    1, 201, 175, 214, 223, 1, 188, 214, 223, 1, 140, 214, 223, 1, 219, 73,
-    214, 223, 1, 206, 109, 214, 223, 18, 3, 252, 206, 214, 223, 18, 3, 68,
-    214, 223, 18, 3, 223, 199, 214, 223, 18, 3, 66, 214, 223, 18, 3, 196, 30,
-    214, 223, 18, 3, 117, 146, 214, 223, 18, 3, 117, 206, 110, 214, 223, 18,
-    3, 71, 214, 223, 18, 3, 251, 236, 214, 223, 18, 3, 74, 214, 223, 18, 3,
-    250, 163, 214, 223, 3, 251, 71, 214, 223, 3, 195, 35, 214, 223, 3, 195,
-    40, 214, 223, 3, 250, 145, 214, 223, 3, 202, 210, 214, 223, 229, 227,
-    214, 223, 18, 3, 208, 207, 71, 191, 106, 51, 1, 65, 191, 106, 51, 18, 3,
-    68, 191, 106, 51, 18, 3, 196, 152, 191, 106, 51, 18, 3, 66, 191, 106, 51,
-    18, 3, 71, 191, 106, 51, 18, 3, 211, 151, 191, 106, 51, 18, 3, 74, 191,
-    106, 51, 18, 3, 251, 236, 191, 106, 51, 18, 3, 250, 163, 191, 106, 51,
-    18, 3, 207, 18, 68, 191, 106, 51, 18, 219, 198, 77, 191, 106, 51, 1, 155,
-    191, 106, 51, 1, 221, 215, 191, 106, 51, 1, 231, 240, 191, 106, 51, 1,
-    231, 91, 191, 106, 51, 1, 214, 68, 191, 106, 51, 1, 247, 160, 191, 106,
-    51, 1, 247, 1, 191, 106, 51, 1, 223, 32, 191, 106, 51, 1, 212, 101, 191,
-    106, 51, 1, 197, 132, 191, 106, 51, 1, 197, 120, 191, 106, 51, 1, 237,
-    191, 191, 106, 51, 1, 237, 175, 191, 106, 51, 1, 213, 79, 191, 106, 51,
-    1, 190, 190, 191, 106, 51, 1, 199, 49, 191, 106, 51, 1, 238, 32, 191,
-    106, 51, 1, 237, 68, 191, 106, 51, 1, 180, 191, 106, 51, 1, 168, 191,
-    106, 51, 1, 209, 228, 191, 106, 51, 1, 249, 153, 191, 106, 51, 1, 248,
-    203, 191, 106, 51, 1, 174, 191, 106, 51, 1, 197, 168, 191, 106, 51, 1,
-    197, 157, 191, 106, 51, 1, 235, 35, 191, 106, 51, 1, 235, 29, 191, 106,
-    51, 1, 191, 71, 191, 106, 51, 1, 191, 123, 191, 106, 51, 1, 255, 214,
-    191, 106, 51, 1, 170, 191, 106, 51, 1, 165, 191, 106, 51, 1, 173, 191,
-    106, 51, 1, 195, 188, 191, 106, 51, 1, 203, 165, 191, 106, 51, 1, 201,
-    175, 191, 106, 51, 1, 188, 191, 106, 51, 1, 140, 191, 106, 51, 1, 220,
-    246, 191, 106, 51, 53, 120, 77, 191, 106, 51, 3, 195, 40, 191, 106, 51,
-    3, 247, 119, 191, 106, 51, 3, 247, 120, 4, 211, 42, 191, 106, 51, 3, 247,
-    122, 4, 211, 42, 191, 106, 51, 3, 251, 71, 191, 106, 51, 3, 195, 35, 191,
-    106, 51, 242, 201, 1, 165, 191, 106, 51, 242, 202, 1, 170, 191, 106, 51,
-    242, 202, 1, 165, 191, 106, 51, 242, 202, 1, 173, 191, 106, 51, 242, 202,
-    1, 195, 188, 191, 106, 51, 89, 229, 236, 77, 191, 106, 51, 242, 215, 229,
-    236, 77, 191, 106, 51, 87, 197, 152, 191, 106, 51, 87, 203, 157, 191,
-    106, 51, 87, 55, 203, 157, 191, 106, 51, 87, 179, 197, 152, 191, 106, 51,
-    89, 235, 130, 229, 236, 77, 191, 106, 51, 242, 215, 235, 130, 229, 236,
-    77, 191, 106, 51, 200, 238, 201, 251, 1, 65, 201, 251, 18, 3, 68, 201,
-    251, 18, 3, 196, 152, 201, 251, 18, 3, 66, 201, 251, 18, 3, 71, 201, 251,
-    18, 3, 74, 201, 251, 18, 3, 211, 151, 201, 251, 18, 3, 251, 236, 201,
-    251, 18, 3, 250, 163, 201, 251, 18, 3, 117, 146, 201, 251, 18, 3, 117,
-    172, 201, 251, 18, 219, 198, 77, 201, 251, 1, 155, 201, 251, 1, 221, 215,
-    201, 251, 1, 231, 240, 201, 251, 1, 231, 91, 201, 251, 1, 214, 68, 201,
-    251, 1, 247, 160, 201, 251, 1, 247, 1, 201, 251, 1, 223, 32, 201, 251, 1,
-    222, 252, 201, 251, 1, 212, 101, 201, 251, 1, 197, 132, 201, 251, 1, 197,
-    120, 201, 251, 1, 237, 191, 201, 251, 1, 237, 175, 201, 251, 1, 213, 79,
-    201, 251, 1, 190, 190, 201, 251, 1, 199, 49, 201, 251, 1, 238, 32, 201,
-    251, 1, 237, 68, 201, 251, 1, 180, 201, 251, 1, 168, 201, 251, 1, 209,
-    228, 201, 251, 1, 249, 153, 201, 251, 1, 248, 203, 201, 251, 1, 174, 201,
-    251, 1, 197, 168, 201, 251, 1, 197, 157, 201, 251, 1, 235, 35, 201, 251,
-    1, 191, 71, 201, 251, 1, 191, 123, 201, 251, 1, 255, 214, 201, 251, 1,
-    170, 201, 251, 1, 165, 201, 251, 1, 173, 201, 251, 1, 195, 188, 201, 251,
-    1, 203, 165, 201, 251, 1, 201, 175, 201, 251, 1, 188, 201, 251, 1, 140,
-    201, 251, 1, 220, 246, 201, 251, 3, 222, 237, 201, 251, 3, 196, 75, 201,
-    251, 242, 201, 1, 165, 201, 251, 242, 201, 1, 173, 201, 251, 242, 201, 1,
-    203, 165, 201, 251, 242, 201, 1, 188, 201, 251, 53, 120, 3, 232, 51, 201,
-    251, 53, 120, 3, 222, 152, 201, 251, 53, 120, 3, 214, 70, 201, 251, 53,
-    120, 3, 238, 127, 201, 251, 53, 120, 3, 215, 61, 201, 251, 53, 120, 3,
-    250, 120, 201, 251, 53, 120, 3, 218, 168, 201, 251, 53, 120, 3, 146, 201,
-    251, 53, 120, 3, 172, 201, 251, 53, 120, 3, 203, 167, 201, 251, 53, 120,
-    3, 206, 8, 201, 251, 53, 120, 3, 255, 214, 201, 251, 3, 251, 71, 201,
-    251, 3, 195, 35, 201, 251, 231, 153, 77, 201, 251, 200, 238, 201, 251,
-    87, 197, 152, 201, 251, 87, 203, 157, 201, 251, 87, 55, 203, 157, 201,
-    251, 87, 209, 79, 201, 251, 229, 236, 87, 4, 215, 206, 23, 200, 199, 23,
-    197, 225, 232, 210, 201, 251, 229, 236, 87, 4, 215, 206, 23, 200, 199,
-    23, 232, 210, 201, 251, 229, 236, 87, 4, 215, 206, 23, 200, 198, 201,
-    251, 199, 81, 217, 55, 201, 251, 199, 81, 217, 54, 21, 22, 214, 207, 229,
-    158, 21, 22, 214, 207, 229, 130, 21, 22, 214, 207, 229, 23, 21, 22, 214,
-    207, 228, 252, 21, 22, 214, 207, 140, 21, 22, 214, 207, 230, 91, 21, 22,
-    214, 207, 203, 15, 21, 22, 214, 207, 203, 14, 21, 22, 214, 207, 203, 11,
-    21, 22, 214, 207, 203, 10, 21, 22, 214, 207, 203, 17, 21, 22, 214, 207,
-    203, 16, 21, 22, 201, 237, 21, 22, 201, 224, 21, 22, 201, 207, 21, 22,
-    201, 249, 210, 81, 243, 15, 230, 3, 1, 168, 210, 81, 243, 15, 230, 3, 1,
-    155, 210, 81, 243, 15, 230, 3, 1, 173, 210, 81, 243, 15, 230, 3, 1, 174,
-    210, 81, 243, 15, 230, 3, 1, 238, 32, 210, 81, 243, 15, 230, 3, 1, 191,
-    123, 210, 81, 243, 15, 230, 3, 1, 195, 188, 210, 81, 243, 15, 230, 3, 1,
-    214, 68, 210, 81, 243, 15, 230, 3, 1, 140, 210, 81, 243, 15, 230, 3, 1,
-    231, 240, 210, 81, 243, 15, 230, 3, 1, 221, 215, 210, 81, 243, 15, 230,
-    3, 1, 188, 210, 81, 243, 15, 230, 3, 1, 249, 153, 210, 81, 243, 15, 230,
-    3, 1, 247, 160, 210, 81, 243, 15, 230, 3, 1, 190, 190, 210, 81, 243, 15,
-    230, 3, 1, 199, 49, 210, 81, 243, 15, 230, 3, 1, 180, 210, 81, 243, 15,
-    230, 3, 1, 209, 228, 210, 81, 243, 15, 230, 3, 1, 165, 210, 81, 243, 15,
-    230, 3, 1, 233, 109, 210, 81, 243, 15, 230, 3, 1, 247, 1, 210, 81, 243,
-    15, 230, 3, 1, 65, 210, 81, 243, 15, 230, 3, 1, 71, 210, 81, 243, 15,
-    230, 3, 1, 68, 210, 81, 243, 15, 230, 3, 1, 74, 210, 81, 243, 15, 230, 3,
-    1, 66, 210, 81, 243, 15, 230, 3, 1, 196, 168, 210, 81, 243, 15, 230, 3,
-    1, 228, 35, 210, 81, 243, 15, 230, 3, 1, 53, 210, 236, 210, 81, 243, 15,
-    230, 3, 1, 53, 222, 152, 210, 81, 243, 15, 230, 3, 1, 53, 200, 43, 210,
-    81, 243, 15, 230, 3, 1, 53, 218, 168, 210, 81, 243, 15, 230, 3, 1, 53,
-    215, 61, 210, 81, 243, 15, 230, 3, 1, 53, 172, 210, 81, 243, 15, 230, 3,
-    1, 53, 193, 224, 210, 81, 243, 15, 230, 3, 1, 53, 214, 70, 210, 81, 243,
-    15, 230, 3, 1, 53, 192, 159, 210, 81, 243, 15, 230, 3, 206, 180, 163,
-    219, 19, 210, 81, 243, 15, 230, 3, 206, 180, 198, 79, 210, 81, 243, 15,
-    230, 3, 205, 138, 231, 11, 201, 63, 210, 81, 243, 15, 230, 3, 206, 180,
-    163, 179, 232, 255, 210, 81, 243, 15, 230, 3, 206, 180, 163, 232, 255,
-    210, 81, 243, 15, 230, 3, 205, 138, 231, 11, 201, 64, 232, 255, 210, 81,
-    243, 15, 230, 3, 205, 138, 163, 219, 19, 210, 81, 243, 15, 230, 3, 205,
-    138, 198, 79, 210, 81, 243, 15, 230, 3, 205, 138, 163, 179, 232, 255,
-    210, 81, 243, 15, 230, 3, 205, 138, 163, 232, 255, 210, 81, 243, 15, 230,
-    3, 216, 85, 198, 79, 210, 81, 243, 15, 230, 3, 231, 11, 201, 64, 195,
-    167, 210, 81, 243, 15, 230, 3, 216, 85, 163, 179, 232, 255, 210, 81, 243,
-    15, 230, 3, 216, 85, 163, 232, 255, 210, 81, 243, 15, 230, 3, 218, 239,
-    163, 219, 19, 210, 81, 243, 15, 230, 3, 218, 239, 198, 79, 210, 81, 243,
-    15, 230, 3, 231, 11, 201, 63, 210, 81, 243, 15, 230, 3, 218, 239, 163,
-    179, 232, 255, 210, 81, 243, 15, 230, 3, 218, 239, 163, 232, 255, 210,
-    81, 243, 15, 230, 3, 231, 11, 201, 64, 232, 255, 100, 229, 236, 77, 100,
-    229, 236, 87, 4, 229, 227, 100, 3, 248, 199, 100, 3, 248, 200, 4, 102,
-    100, 3, 233, 205, 248, 199, 100, 3, 233, 205, 248, 200, 4, 102, 100, 3,
-    193, 102, 232, 225, 248, 199, 100, 3, 193, 102, 213, 174, 248, 199, 100,
-    3, 207, 18, 213, 174, 248, 199, 100, 3, 216, 43, 248, 201, 1, 65, 248,
-    201, 1, 252, 206, 248, 201, 1, 68, 248, 201, 1, 223, 199, 248, 201, 1,
-    66, 248, 201, 1, 196, 30, 248, 201, 1, 117, 146, 248, 201, 1, 117, 206,
-    110, 248, 201, 1, 117, 172, 248, 201, 1, 71, 248, 201, 1, 251, 236, 248,
-    201, 1, 74, 248, 201, 1, 250, 163, 248, 201, 1, 155, 248, 201, 1, 221,
-    215, 248, 201, 1, 231, 240, 248, 201, 1, 231, 91, 248, 201, 1, 214, 68,
-    248, 201, 1, 247, 160, 248, 201, 1, 247, 1, 248, 201, 1, 223, 32, 248,
-    201, 1, 222, 252, 248, 201, 1, 212, 101, 248, 201, 1, 197, 132, 248, 201,
-    1, 197, 120, 248, 201, 1, 237, 191, 248, 201, 1, 237, 175, 248, 201, 1,
-    213, 79, 248, 201, 1, 190, 190, 248, 201, 1, 199, 49, 248, 201, 1, 238,
-    32, 248, 201, 1, 237, 68, 248, 201, 1, 180, 248, 201, 1, 168, 248, 201,
-    1, 209, 228, 248, 201, 1, 249, 153, 248, 201, 1, 248, 203, 248, 201, 1,
-    174, 248, 201, 1, 170, 248, 201, 1, 165, 248, 201, 1, 173, 248, 201, 1,
-    195, 188, 248, 201, 1, 203, 165, 248, 201, 1, 201, 175, 248, 201, 1, 188,
-    248, 201, 1, 140, 248, 201, 18, 3, 252, 206, 248, 201, 18, 3, 68, 248,
-    201, 18, 3, 223, 199, 248, 201, 18, 3, 66, 248, 201, 18, 3, 196, 30, 248,
-    201, 18, 3, 117, 146, 248, 201, 18, 3, 117, 206, 110, 248, 201, 18, 3,
-    117, 172, 248, 201, 18, 3, 71, 248, 201, 18, 3, 251, 236, 248, 201, 18,
-    3, 74, 248, 201, 18, 3, 250, 163, 248, 201, 3, 247, 119, 248, 201, 3,
-    251, 71, 248, 201, 3, 195, 35, 248, 201, 3, 195, 40, 248, 201, 3, 250,
-    145, 248, 201, 237, 238, 248, 201, 55, 237, 238, 248, 201, 193, 23, 204,
-    10, 248, 201, 231, 204, 233, 2, 248, 201, 231, 204, 233, 1, 248, 201, 17,
-    191, 77, 248, 201, 17, 107, 248, 201, 17, 109, 248, 201, 17, 138, 248,
-    201, 17, 134, 248, 201, 17, 149, 248, 201, 17, 169, 248, 201, 17, 175,
-    248, 201, 17, 171, 248, 201, 17, 178, 248, 201, 31, 107, 248, 201, 31,
-    109, 248, 201, 31, 138, 248, 201, 31, 134, 248, 201, 31, 149, 248, 201,
-    31, 169, 248, 201, 31, 175, 248, 201, 31, 171, 248, 201, 31, 178, 248,
-    201, 31, 199, 95, 248, 201, 31, 197, 32, 248, 201, 31, 198, 249, 248,
-    201, 31, 232, 135, 248, 201, 31, 233, 15, 248, 201, 31, 202, 120, 248,
-    201, 31, 203, 241, 248, 201, 31, 234, 153, 248, 201, 31, 213, 169, 248,
-    201, 228, 139, 196, 91, 77, 217, 57, 229, 236, 77, 217, 57, 87, 203, 157,
-    217, 57, 1, 155, 217, 57, 1, 221, 215, 217, 57, 1, 231, 240, 217, 57, 1,
-    214, 68, 217, 57, 1, 247, 160, 217, 57, 1, 247, 1, 217, 57, 1, 223, 32,
-    217, 57, 1, 212, 101, 217, 57, 1, 190, 190, 217, 57, 1, 199, 49, 217, 57,
-    1, 238, 32, 217, 57, 1, 180, 217, 57, 1, 168, 217, 57, 1, 209, 228, 217,
-    57, 1, 249, 153, 217, 57, 1, 174, 217, 57, 1, 197, 168, 217, 57, 1, 197,
-    157, 217, 57, 1, 235, 35, 217, 57, 1, 193, 190, 217, 57, 1, 191, 71, 217,
-    57, 1, 191, 123, 217, 57, 1, 255, 214, 217, 57, 1, 170, 217, 57, 1, 165,
-    217, 57, 1, 173, 217, 57, 1, 203, 165, 217, 57, 1, 188, 217, 57, 1, 140,
-    217, 57, 1, 65, 217, 57, 200, 239, 1, 155, 217, 57, 200, 239, 1, 221,
-    215, 217, 57, 200, 239, 1, 231, 240, 217, 57, 200, 239, 1, 214, 68, 217,
-    57, 200, 239, 1, 247, 160, 217, 57, 200, 239, 1, 247, 1, 217, 57, 200,
-    239, 1, 223, 32, 217, 57, 200, 239, 1, 212, 101, 217, 57, 200, 239, 1,
-    190, 190, 217, 57, 200, 239, 1, 199, 49, 217, 57, 200, 239, 1, 238, 32,
-    217, 57, 200, 239, 1, 180, 217, 57, 200, 239, 1, 168, 217, 57, 200, 239,
-    1, 209, 228, 217, 57, 200, 239, 1, 249, 153, 217, 57, 200, 239, 1, 174,
-    217, 57, 200, 239, 1, 197, 168, 217, 57, 200, 239, 1, 197, 157, 217, 57,
-    200, 239, 1, 235, 35, 217, 57, 200, 239, 1, 193, 190, 217, 57, 200, 239,
-    1, 191, 71, 217, 57, 200, 239, 1, 191, 123, 217, 57, 200, 239, 1, 170,
-    217, 57, 200, 239, 1, 165, 217, 57, 200, 239, 1, 173, 217, 57, 200, 239,
-    1, 203, 165, 217, 57, 200, 239, 1, 188, 217, 57, 200, 239, 1, 140, 217,
-    57, 200, 239, 1, 65, 217, 57, 18, 3, 252, 206, 217, 57, 18, 3, 68, 217,
-    57, 18, 3, 66, 217, 57, 18, 3, 71, 217, 57, 18, 3, 74, 217, 57, 3, 251,
-    71, 217, 57, 3, 247, 119, 217, 41, 129, 1, 65, 217, 41, 129, 1, 252, 206,
-    217, 41, 129, 1, 68, 217, 41, 129, 1, 223, 199, 217, 41, 129, 1, 66, 217,
-    41, 129, 1, 196, 30, 217, 41, 129, 1, 71, 217, 41, 129, 1, 251, 236, 217,
-    41, 129, 1, 74, 217, 41, 129, 1, 250, 163, 217, 41, 129, 1, 155, 217, 41,
-    129, 1, 221, 215, 217, 41, 129, 1, 231, 240, 217, 41, 129, 1, 231, 91,
-    217, 41, 129, 1, 214, 68, 217, 41, 129, 1, 247, 160, 217, 41, 129, 1,
-    247, 1, 217, 41, 129, 1, 223, 32, 217, 41, 129, 1, 222, 252, 217, 41,
-    129, 1, 212, 101, 217, 41, 129, 1, 197, 132, 217, 41, 129, 1, 197, 120,
-    217, 41, 129, 1, 237, 191, 217, 41, 129, 1, 237, 175, 217, 41, 129, 1,
-    213, 79, 217, 41, 129, 1, 190, 190, 217, 41, 129, 1, 199, 49, 217, 41,
-    129, 1, 238, 32, 217, 41, 129, 1, 237, 68, 217, 41, 129, 1, 180, 217, 41,
-    129, 1, 168, 217, 41, 129, 1, 209, 228, 217, 41, 129, 1, 249, 153, 217,
-    41, 129, 1, 248, 203, 217, 41, 129, 1, 174, 217, 41, 129, 1, 170, 217,
-    41, 129, 1, 165, 217, 41, 129, 1, 173, 217, 41, 129, 1, 195, 188, 217,
-    41, 129, 1, 203, 165, 217, 41, 129, 1, 201, 175, 217, 41, 129, 1, 188,
-    217, 41, 129, 1, 140, 217, 41, 129, 1, 219, 73, 217, 41, 129, 1, 220,
-    246, 217, 41, 129, 1, 222, 202, 217, 41, 129, 1, 198, 26, 217, 41, 129,
-    18, 3, 252, 206, 217, 41, 129, 18, 3, 68, 217, 41, 129, 18, 3, 223, 199,
-    217, 41, 129, 18, 3, 66, 217, 41, 129, 18, 3, 196, 30, 217, 41, 129, 18,
-    3, 117, 146, 217, 41, 129, 18, 3, 71, 217, 41, 129, 18, 3, 251, 236, 217,
-    41, 129, 18, 3, 74, 217, 41, 129, 18, 3, 250, 163, 217, 41, 129, 3, 251,
-    71, 217, 41, 129, 3, 195, 35, 217, 41, 129, 3, 212, 141, 217, 41, 129, 3,
-    247, 121, 217, 41, 129, 3, 230, 72, 217, 41, 129, 195, 40, 217, 41, 129,
-    207, 44, 217, 41, 129, 207, 181, 217, 41, 129, 17, 191, 77, 217, 41, 129,
-    17, 107, 217, 41, 129, 17, 109, 217, 41, 129, 17, 138, 217, 41, 129, 17,
-    134, 217, 41, 129, 17, 149, 217, 41, 129, 17, 169, 217, 41, 129, 17, 175,
-    217, 41, 129, 17, 171, 217, 41, 129, 17, 178, 230, 157, 129, 1, 65, 230,
-    157, 129, 1, 252, 206, 230, 157, 129, 1, 68, 230, 157, 129, 1, 223, 199,
-    230, 157, 129, 1, 66, 230, 157, 129, 1, 196, 30, 230, 157, 129, 1, 234,
-    188, 230, 157, 129, 1, 251, 236, 230, 157, 129, 1, 211, 87, 230, 157,
-    129, 1, 250, 163, 230, 157, 129, 1, 170, 230, 157, 129, 1, 195, 188, 230,
-    157, 129, 1, 249, 153, 230, 157, 129, 1, 248, 203, 230, 157, 129, 1, 174,
-    230, 157, 129, 1, 155, 230, 157, 129, 1, 221, 215, 230, 157, 129, 1, 190,
-    190, 230, 157, 129, 1, 199, 49, 230, 157, 129, 1, 173, 230, 157, 129, 1,
-    231, 240, 230, 157, 129, 1, 231, 91, 230, 157, 129, 1, 238, 32, 230, 157,
-    129, 1, 237, 68, 230, 157, 129, 1, 180, 230, 157, 129, 1, 247, 160, 230,
-    157, 129, 1, 247, 1, 230, 157, 129, 1, 197, 132, 230, 157, 129, 1, 197,
-    120, 230, 157, 129, 1, 219, 73, 230, 157, 129, 1, 223, 32, 230, 157, 129,
-    1, 222, 252, 230, 157, 129, 1, 237, 191, 230, 157, 129, 1, 237, 175, 230,
-    157, 129, 1, 214, 68, 230, 157, 129, 1, 168, 230, 157, 129, 1, 209, 228,
-    230, 157, 129, 1, 140, 230, 157, 129, 1, 165, 230, 157, 129, 1, 188, 230,
-    157, 129, 18, 3, 252, 206, 230, 157, 129, 18, 3, 68, 230, 157, 129, 18,
-    3, 223, 199, 230, 157, 129, 18, 3, 66, 230, 157, 129, 18, 3, 196, 30,
-    230, 157, 129, 18, 3, 234, 188, 230, 157, 129, 18, 3, 251, 236, 230, 157,
-    129, 18, 3, 211, 87, 230, 157, 129, 18, 3, 250, 163, 230, 157, 129, 3,
-    251, 71, 230, 157, 129, 3, 195, 35, 230, 157, 129, 195, 40, 230, 157,
-    129, 211, 113, 230, 157, 129, 17, 191, 77, 230, 157, 129, 17, 107, 230,
-    157, 129, 17, 109, 230, 157, 129, 17, 138, 230, 157, 129, 17, 134, 230,
-    157, 129, 17, 149, 230, 157, 129, 17, 169, 230, 157, 129, 17, 175, 230,
-    157, 129, 17, 171, 230, 157, 129, 17, 178, 217, 102, 1, 155, 217, 102, 1,
-    231, 240, 217, 102, 1, 214, 68, 217, 102, 1, 168, 217, 102, 1, 249, 153,
-    217, 102, 1, 174, 217, 102, 1, 190, 190, 217, 102, 1, 238, 32, 217, 102,
-    1, 180, 217, 102, 1, 247, 160, 217, 102, 1, 223, 32, 217, 102, 1, 212,
-    101, 217, 102, 1, 170, 217, 102, 1, 165, 217, 102, 1, 173, 217, 102, 1,
-    195, 188, 217, 102, 1, 188, 217, 102, 1, 65, 217, 102, 251, 118, 217,
-    102, 18, 3, 68, 217, 102, 18, 3, 66, 217, 102, 18, 3, 71, 217, 102, 18,
-    3, 74, 217, 102, 210, 94, 217, 102, 234, 95, 79, 205, 53, 222, 33, 3,
-    247, 119, 222, 33, 3, 251, 71, 222, 33, 3, 207, 44, 222, 33, 3, 195, 35,
-    222, 33, 1, 65, 222, 33, 1, 252, 206, 222, 33, 1, 68, 222, 33, 1, 223,
-    199, 222, 33, 1, 66, 222, 33, 1, 196, 30, 222, 33, 1, 117, 146, 222, 33,
-    1, 117, 206, 110, 222, 33, 1, 117, 172, 222, 33, 1, 117, 219, 74, 222,
-    33, 1, 71, 222, 33, 1, 251, 236, 222, 33, 1, 74, 222, 33, 1, 155, 222,
-    33, 1, 221, 215, 222, 33, 1, 231, 240, 222, 33, 1, 231, 91, 222, 33, 1,
-    214, 68, 222, 33, 1, 247, 160, 222, 33, 1, 247, 1, 222, 33, 1, 223, 32,
-    222, 33, 1, 222, 252, 222, 33, 1, 212, 101, 222, 33, 1, 197, 132, 222,
-    33, 1, 197, 120, 222, 33, 1, 237, 191, 222, 33, 1, 237, 175, 222, 33, 1,
-    213, 79, 222, 33, 1, 190, 190, 222, 33, 1, 199, 49, 222, 33, 1, 238, 32,
-    222, 33, 1, 237, 68, 222, 33, 1, 180, 222, 33, 1, 168, 222, 33, 1, 209,
-    228, 222, 33, 1, 249, 153, 222, 33, 1, 248, 203, 222, 33, 1, 174, 222,
-    33, 1, 170, 222, 33, 1, 165, 222, 33, 1, 173, 222, 33, 1, 193, 190, 222,
-    33, 1, 203, 165, 222, 33, 1, 201, 175, 222, 33, 1, 188, 222, 33, 1, 140,
-    222, 33, 1, 222, 202, 222, 33, 18, 3, 252, 206, 222, 33, 18, 3, 251, 157,
-    252, 206, 222, 33, 18, 3, 68, 222, 33, 18, 3, 223, 199, 222, 33, 18, 3,
-    66, 222, 33, 18, 3, 196, 30, 222, 33, 18, 3, 117, 146, 222, 33, 18, 3,
-    71, 222, 33, 18, 3, 251, 236, 222, 33, 18, 3, 233, 242, 222, 33, 3, 221,
-    143, 222, 33, 239, 45, 222, 33, 237, 238, 222, 33, 55, 237, 238, 222, 33,
-    208, 152, 205, 54, 217, 51, 222, 33, 208, 152, 251, 157, 205, 54, 217,
-    51, 222, 33, 208, 152, 232, 186, 222, 33, 208, 152, 201, 248, 233, 3,
-    222, 33, 208, 152, 236, 140, 222, 33, 208, 152, 55, 236, 140, 222, 33,
-    208, 152, 197, 225, 236, 140, 222, 33, 208, 152, 243, 10, 222, 33, 208,
-    152, 233, 4, 243, 10, 222, 33, 208, 152, 201, 217, 222, 33, 208, 152,
-    242, 215, 201, 217, 222, 33, 17, 191, 77, 222, 33, 17, 107, 222, 33, 17,
-    109, 222, 33, 17, 138, 222, 33, 17, 134, 222, 33, 17, 149, 222, 33, 17,
-    169, 222, 33, 17, 175, 222, 33, 17, 171, 222, 33, 17, 178, 219, 88, 1,
-    192, 35, 44, 232, 118, 91, 198, 222, 44, 232, 118, 91, 211, 100, 44, 232,
-    118, 91, 234, 156, 44, 232, 118, 91, 202, 118, 44, 232, 118, 91, 232,
-    139, 44, 232, 118, 91, 198, 245, 44, 232, 118, 115, 234, 155, 44, 232,
-    118, 115, 202, 117, 44, 232, 118, 91, 197, 35, 44, 232, 118, 91, 202,
-    127, 44, 232, 118, 91, 202, 126, 44, 232, 118, 91, 199, 86, 44, 232, 118,
-    91, 234, 159, 44, 232, 118, 115, 197, 34, 44, 232, 118, 115, 202, 125,
-    44, 232, 118, 91, 233, 18, 44, 232, 118, 91, 208, 22, 44, 232, 118, 91,
-    230, 69, 44, 232, 118, 91, 230, 68, 44, 232, 118, 115, 208, 20, 44, 232,
-    118, 235, 121, 233, 93, 221, 144, 44, 3, 214, 104, 44, 3, 247, 6, 44, 3,
-    252, 157, 44, 3, 196, 15, 44, 3, 215, 90, 44, 3, 220, 194, 44, 3, 210,
-    85, 44, 3, 215, 135, 44, 3, 222, 124, 44, 3, 210, 164, 44, 3, 209, 39,
-    44, 3, 195, 173, 44, 3, 210, 215, 44, 3, 220, 183, 44, 3, 195, 143, 44,
-    193, 101, 238, 187, 56, 44, 235, 92, 238, 187, 56, 44, 220, 23, 56, 44,
-    205, 159, 210, 167, 56, 44, 198, 21, 238, 230, 56, 44, 198, 21, 31, 56,
-    44, 238, 169, 56, 44, 23, 211, 155, 56, 44, 201, 227, 56, 44, 198, 39,
-    56, 44, 223, 163, 209, 22, 56, 44, 201, 96, 232, 98, 56, 44, 3, 215, 94,
-    44, 3, 195, 181, 44, 208, 152, 234, 95, 79, 199, 53, 10, 3, 65, 10, 3,
-    42, 25, 65, 10, 3, 42, 25, 249, 135, 10, 3, 42, 25, 231, 209, 199, 84,
-    10, 3, 42, 25, 140, 10, 3, 42, 25, 223, 201, 10, 3, 42, 25, 220, 103,
-    230, 155, 10, 3, 42, 25, 215, 101, 10, 3, 42, 25, 205, 185, 10, 3, 254,
-    215, 10, 3, 252, 155, 10, 3, 252, 156, 25, 250, 207, 10, 3, 252, 156, 25,
-    235, 74, 230, 155, 10, 3, 252, 156, 25, 231, 222, 10, 3, 252, 156, 25,
-    231, 209, 199, 84, 10, 3, 252, 156, 25, 140, 10, 3, 252, 156, 25, 223,
-    202, 230, 155, 10, 3, 252, 156, 25, 223, 172, 10, 3, 252, 156, 25, 220,
-    104, 10, 3, 252, 156, 25, 203, 97, 10, 3, 252, 156, 25, 126, 108, 126,
-    108, 66, 10, 3, 252, 156, 230, 155, 10, 3, 252, 72, 10, 3, 252, 73, 25,
-    249, 114, 10, 3, 252, 73, 25, 231, 209, 199, 84, 10, 3, 252, 73, 25, 216,
-    233, 108, 234, 103, 10, 3, 252, 73, 25, 203, 163, 10, 3, 252, 73, 25,
-    199, 209, 10, 3, 252, 42, 10, 3, 251, 216, 10, 3, 251, 217, 25, 234, 28,
-    10, 3, 251, 217, 25, 203, 59, 108, 231, 23, 10, 3, 251, 207, 10, 3, 251,
-    208, 25, 251, 207, 10, 3, 251, 208, 25, 236, 253, 10, 3, 251, 208, 25,
-    231, 23, 10, 3, 251, 208, 25, 140, 10, 3, 251, 208, 25, 222, 111, 10, 3,
-    251, 208, 25, 221, 166, 10, 3, 251, 208, 25, 203, 113, 10, 3, 251, 208,
-    25, 196, 38, 10, 3, 251, 203, 10, 3, 251, 190, 10, 3, 251, 145, 10, 3,
-    251, 146, 25, 203, 113, 10, 3, 251, 132, 10, 3, 251, 133, 139, 251, 132,
-    10, 3, 251, 133, 115, 198, 144, 10, 3, 251, 133, 108, 214, 241, 211, 63,
-    251, 133, 108, 214, 240, 10, 3, 251, 133, 108, 214, 241, 201, 189, 10, 3,
-    251, 91, 10, 3, 251, 60, 10, 3, 251, 26, 10, 3, 251, 27, 25, 220, 197,
-    10, 3, 250, 254, 10, 3, 250, 215, 10, 3, 250, 209, 10, 3, 250, 210, 191,
-    26, 199, 84, 10, 3, 250, 210, 222, 116, 199, 84, 10, 3, 250, 210, 139,
-    250, 210, 197, 83, 139, 197, 83, 197, 83, 139, 197, 83, 210, 137, 10, 3,
-    250, 210, 139, 250, 210, 139, 250, 209, 10, 3, 250, 210, 139, 250, 210,
-    139, 250, 210, 238, 210, 250, 210, 139, 250, 210, 139, 250, 209, 10, 3,
-    250, 207, 10, 3, 250, 203, 10, 3, 249, 153, 10, 3, 249, 135, 10, 3, 249,
-    129, 10, 3, 249, 121, 10, 3, 249, 115, 10, 3, 249, 116, 139, 249, 115,
-    10, 3, 249, 114, 10, 3, 164, 10, 3, 249, 87, 10, 3, 248, 188, 10, 3, 248,
-    189, 25, 65, 10, 3, 248, 189, 25, 231, 200, 10, 3, 248, 189, 25, 223,
-    202, 230, 155, 10, 3, 248, 10, 10, 3, 248, 11, 139, 248, 11, 252, 155,
-    10, 3, 248, 11, 139, 248, 11, 196, 113, 10, 3, 248, 11, 238, 210, 248,
-    10, 10, 3, 247, 242, 10, 3, 247, 243, 139, 247, 242, 10, 3, 247, 230, 10,
-    3, 247, 229, 10, 3, 238, 32, 10, 3, 238, 22, 10, 3, 238, 23, 221, 125,
-    25, 42, 108, 217, 39, 10, 3, 238, 23, 221, 125, 25, 251, 145, 10, 3, 238,
-    23, 221, 125, 25, 249, 114, 10, 3, 238, 23, 221, 125, 25, 248, 188, 10,
-    3, 238, 23, 221, 125, 25, 231, 240, 10, 3, 238, 23, 221, 125, 25, 231,
-    241, 108, 217, 39, 10, 3, 238, 23, 221, 125, 25, 231, 53, 10, 3, 238, 23,
-    221, 125, 25, 231, 32, 10, 3, 238, 23, 221, 125, 25, 230, 168, 10, 3,
-    238, 23, 221, 125, 25, 140, 10, 3, 238, 23, 221, 125, 25, 223, 77, 10, 3,
-    238, 23, 221, 125, 25, 223, 78, 108, 218, 225, 10, 3, 238, 23, 221, 125,
-    25, 222, 96, 10, 3, 238, 23, 221, 125, 25, 173, 10, 3, 238, 23, 221, 125,
-    25, 218, 225, 10, 3, 238, 23, 221, 125, 25, 218, 226, 108, 217, 38, 10,
-    3, 238, 23, 221, 125, 25, 218, 208, 10, 3, 238, 23, 221, 125, 25, 214,
-    121, 10, 3, 238, 23, 221, 125, 25, 210, 138, 108, 210, 137, 10, 3, 238,
-    23, 221, 125, 25, 202, 222, 10, 3, 238, 23, 221, 125, 25, 199, 209, 10,
-    3, 238, 23, 221, 125, 25, 196, 170, 108, 231, 32, 10, 3, 238, 23, 221,
-    125, 25, 196, 38, 10, 3, 237, 250, 10, 3, 237, 225, 10, 3, 237, 224, 10,
-    3, 237, 223, 10, 3, 237, 44, 10, 3, 237, 26, 10, 3, 236, 255, 10, 3, 237,
-    0, 25, 203, 113, 10, 3, 236, 253, 10, 3, 236, 243, 10, 3, 236, 244, 222,
-    55, 126, 230, 156, 236, 222, 10, 3, 236, 222, 10, 3, 235, 89, 10, 3, 235,
-    90, 139, 235, 89, 10, 3, 235, 90, 230, 155, 10, 3, 235, 90, 203, 94, 10,
-    3, 235, 87, 10, 3, 235, 88, 25, 234, 9, 10, 3, 235, 86, 10, 3, 235, 82,
-    10, 3, 235, 81, 10, 3, 235, 80, 10, 3, 235, 75, 10, 3, 235, 73, 10, 3,
-    235, 74, 230, 155, 10, 3, 235, 74, 230, 156, 230, 155, 10, 3, 235, 72,
-    10, 3, 235, 65, 10, 3, 71, 10, 3, 235, 15, 25, 210, 137, 10, 3, 235, 15,
-    139, 235, 15, 212, 131, 139, 212, 130, 10, 3, 234, 218, 10, 3, 234, 219,
-    25, 42, 108, 230, 105, 108, 238, 32, 10, 3, 234, 219, 25, 231, 200, 10,
-    3, 234, 219, 25, 216, 100, 10, 3, 234, 219, 25, 205, 169, 10, 3, 234,
-    219, 25, 203, 113, 10, 3, 234, 219, 25, 66, 10, 3, 234, 190, 10, 3, 234,
-    177, 10, 3, 234, 140, 10, 3, 234, 103, 10, 3, 234, 104, 25, 231, 208, 10,
-    3, 234, 104, 25, 231, 209, 199, 84, 10, 3, 234, 104, 25, 216, 232, 10, 3,
-    234, 104, 238, 210, 234, 103, 10, 3, 234, 104, 211, 63, 234, 103, 10, 3,
-    234, 104, 201, 189, 10, 3, 234, 31, 10, 3, 234, 28, 10, 3, 234, 9, 10, 3,
-    233, 180, 10, 3, 233, 181, 25, 65, 10, 3, 233, 181, 25, 42, 108, 220, 37,
-    10, 3, 233, 181, 25, 42, 108, 220, 38, 25, 220, 37, 10, 3, 233, 181, 25,
-    251, 132, 10, 3, 233, 181, 25, 249, 135, 10, 3, 233, 181, 25, 235, 74,
-    230, 155, 10, 3, 233, 181, 25, 235, 74, 230, 156, 230, 155, 10, 3, 233,
-    181, 25, 140, 10, 3, 233, 181, 25, 230, 105, 230, 155, 10, 3, 233, 181,
-    25, 223, 202, 230, 155, 10, 3, 233, 181, 25, 222, 54, 10, 3, 233, 181,
-    25, 222, 55, 201, 189, 10, 3, 233, 181, 25, 220, 223, 10, 3, 233, 181,
-    25, 173, 10, 3, 233, 181, 25, 220, 38, 25, 220, 37, 10, 3, 233, 181, 25,
-    219, 146, 10, 3, 233, 181, 25, 218, 225, 10, 3, 233, 181, 25, 196, 169,
-    10, 3, 233, 181, 25, 196, 158, 10, 3, 231, 240, 10, 3, 231, 241, 230,
-    155, 10, 3, 231, 238, 10, 3, 231, 239, 25, 42, 108, 238, 33, 108, 140,
-    10, 3, 231, 239, 25, 42, 108, 140, 10, 3, 231, 239, 25, 42, 108, 223,
-    201, 10, 3, 231, 239, 25, 252, 73, 199, 85, 108, 199, 236, 10, 3, 231,
-    239, 25, 251, 132, 10, 3, 231, 239, 25, 250, 209, 10, 3, 231, 239, 25,
-    250, 208, 108, 231, 222, 10, 3, 231, 239, 25, 249, 135, 10, 3, 231, 239,
-    25, 249, 88, 108, 165, 10, 3, 231, 239, 25, 247, 230, 10, 3, 231, 239,
-    25, 247, 231, 108, 165, 10, 3, 231, 239, 25, 238, 32, 10, 3, 231, 239,
-    25, 237, 44, 10, 3, 231, 239, 25, 237, 0, 25, 203, 113, 10, 3, 231, 239,
-    25, 235, 87, 10, 3, 231, 239, 25, 234, 140, 10, 3, 231, 239, 25, 234,
-    141, 108, 173, 10, 3, 231, 239, 25, 234, 103, 10, 3, 231, 239, 25, 234,
-    104, 25, 231, 209, 199, 84, 10, 3, 231, 239, 25, 231, 209, 199, 84, 10,
-    3, 231, 239, 25, 231, 200, 10, 3, 231, 239, 25, 231, 53, 10, 3, 231, 239,
-    25, 231, 51, 10, 3, 231, 239, 25, 231, 52, 108, 65, 10, 3, 231, 239, 25,
-    231, 33, 108, 201, 4, 10, 3, 231, 239, 25, 230, 105, 108, 218, 226, 108,
-    234, 9, 10, 3, 231, 239, 25, 230, 73, 10, 3, 231, 239, 25, 230, 74, 108,
-    173, 10, 3, 231, 239, 25, 229, 159, 108, 219, 146, 10, 3, 231, 239, 25,
-    228, 151, 10, 3, 231, 239, 25, 223, 202, 230, 155, 10, 3, 231, 239, 25,
-    223, 63, 108, 228, 160, 108, 250, 209, 10, 3, 231, 239, 25, 222, 96, 10,
-    3, 231, 239, 25, 222, 54, 10, 3, 231, 239, 25, 221, 152, 10, 3, 231, 239,
-    25, 221, 153, 108, 220, 37, 10, 3, 231, 239, 25, 220, 224, 108, 251, 132,
-    10, 3, 231, 239, 25, 173, 10, 3, 231, 239, 25, 216, 233, 108, 234, 103,
-    10, 3, 231, 239, 25, 216, 100, 10, 3, 231, 239, 25, 212, 130, 10, 3, 231,
-    239, 25, 212, 131, 139, 212, 130, 10, 3, 231, 239, 25, 168, 10, 3, 231,
-    239, 25, 205, 169, 10, 3, 231, 239, 25, 205, 127, 10, 3, 231, 239, 25,
-    203, 113, 10, 3, 231, 239, 25, 203, 114, 108, 197, 64, 10, 3, 231, 239,
-    25, 203, 79, 10, 3, 231, 239, 25, 200, 204, 10, 3, 231, 239, 25, 199,
-    209, 10, 3, 231, 239, 25, 66, 10, 3, 231, 239, 25, 196, 158, 10, 3, 231,
-    239, 25, 196, 159, 108, 235, 89, 10, 3, 231, 239, 139, 231, 238, 10, 3,
-    231, 233, 10, 3, 231, 234, 238, 210, 231, 233, 10, 3, 231, 231, 10, 3,
-    231, 232, 139, 231, 232, 231, 201, 139, 231, 200, 10, 3, 231, 222, 10, 3,
-    231, 223, 231, 232, 139, 231, 232, 231, 201, 139, 231, 200, 10, 3, 231,
-    221, 10, 3, 231, 219, 10, 3, 231, 210, 10, 3, 231, 208, 10, 3, 231, 209,
-    199, 84, 10, 3, 231, 209, 139, 231, 208, 10, 3, 231, 209, 238, 210, 231,
-    208, 10, 3, 231, 200, 10, 3, 231, 199, 10, 3, 231, 193, 10, 3, 231, 134,
-    10, 3, 231, 135, 25, 220, 197, 10, 3, 231, 53, 10, 3, 231, 54, 25, 71,
-    10, 3, 231, 54, 25, 66, 10, 3, 231, 54, 238, 210, 231, 53, 10, 3, 231,
-    51, 10, 3, 231, 52, 139, 231, 51, 10, 3, 231, 52, 238, 210, 231, 51, 10,
-    3, 231, 48, 10, 3, 231, 32, 10, 3, 231, 33, 230, 155, 10, 3, 231, 30, 10,
-    3, 231, 31, 25, 42, 108, 223, 201, 10, 3, 231, 31, 25, 231, 209, 199, 84,
-    10, 3, 231, 31, 25, 223, 201, 10, 3, 231, 31, 25, 218, 226, 108, 223,
-    201, 10, 3, 231, 31, 25, 168, 10, 3, 231, 25, 10, 3, 231, 23, 10, 3, 231,
-    24, 238, 210, 231, 23, 10, 3, 231, 24, 25, 249, 135, 10, 3, 231, 24, 25,
-    199, 209, 10, 3, 231, 24, 199, 84, 10, 3, 230, 179, 10, 3, 230, 180, 238,
-    210, 230, 179, 10, 3, 230, 177, 10, 3, 230, 178, 25, 222, 96, 10, 3, 230,
-    178, 25, 222, 97, 25, 223, 202, 230, 155, 10, 3, 230, 178, 25, 212, 130,
-    10, 3, 230, 178, 25, 205, 170, 108, 197, 82, 10, 3, 230, 178, 230, 155,
-    10, 3, 230, 168, 10, 3, 230, 169, 25, 42, 108, 220, 197, 10, 3, 230, 169,
-    25, 220, 197, 10, 3, 230, 169, 139, 230, 169, 218, 216, 10, 3, 230, 160,
-    10, 3, 230, 158, 10, 3, 230, 159, 25, 203, 113, 10, 3, 230, 149, 10, 3,
-    230, 148, 10, 3, 230, 143, 10, 3, 230, 142, 10, 3, 140, 10, 3, 230, 105,
-    199, 84, 10, 3, 230, 105, 230, 155, 10, 3, 230, 73, 10, 3, 229, 158, 10,
-    3, 229, 159, 25, 250, 209, 10, 3, 229, 159, 25, 250, 207, 10, 3, 229,
-    159, 25, 249, 135, 10, 3, 229, 159, 25, 236, 222, 10, 3, 229, 159, 25,
-    231, 231, 10, 3, 229, 159, 25, 221, 141, 10, 3, 229, 159, 25, 212, 130,
-    10, 3, 229, 159, 25, 203, 113, 10, 3, 229, 159, 25, 66, 10, 3, 228, 159,
-    10, 3, 228, 151, 10, 3, 228, 152, 25, 251, 132, 10, 3, 228, 152, 25, 230,
-    73, 10, 3, 228, 152, 25, 222, 54, 10, 3, 228, 152, 25, 219, 89, 10, 3,
-    228, 152, 25, 196, 158, 10, 3, 228, 146, 10, 3, 68, 10, 3, 228, 74, 65,
-    10, 3, 228, 30, 10, 3, 223, 229, 10, 3, 223, 230, 139, 223, 230, 247,
-    230, 10, 3, 223, 230, 139, 223, 230, 201, 189, 10, 3, 223, 204, 10, 3,
-    223, 201, 10, 3, 223, 202, 237, 26, 10, 3, 223, 202, 207, 1, 10, 3, 223,
-    202, 139, 223, 202, 203, 63, 139, 203, 63, 196, 159, 139, 196, 158, 10,
-    3, 223, 202, 230, 155, 10, 3, 223, 191, 10, 3, 223, 192, 25, 231, 209,
-    199, 84, 10, 3, 223, 190, 10, 3, 223, 180, 10, 3, 223, 181, 25, 199, 209,
-    10, 3, 223, 181, 238, 210, 223, 180, 10, 3, 223, 181, 211, 63, 223, 180,
-    10, 3, 223, 181, 201, 189, 10, 3, 223, 172, 10, 3, 223, 162, 10, 3, 223,
-    77, 10, 3, 223, 62, 10, 3, 155, 10, 3, 222, 142, 25, 65, 10, 3, 222, 142,
-    25, 252, 42, 10, 3, 222, 142, 25, 252, 43, 108, 220, 223, 10, 3, 222,
-    142, 25, 250, 207, 10, 3, 222, 142, 25, 249, 135, 10, 3, 222, 142, 25,
-    249, 114, 10, 3, 222, 142, 25, 164, 10, 3, 222, 142, 25, 248, 188, 10, 3,
-    222, 142, 25, 234, 28, 10, 3, 222, 142, 25, 234, 9, 10, 3, 222, 142, 25,
-    231, 240, 10, 3, 222, 142, 25, 231, 222, 10, 3, 222, 142, 25, 231, 209,
-    199, 84, 10, 3, 222, 142, 25, 231, 200, 10, 3, 222, 142, 25, 231, 201,
-    108, 203, 164, 108, 65, 10, 3, 222, 142, 25, 231, 53, 10, 3, 222, 142,
-    25, 231, 32, 10, 3, 222, 142, 25, 231, 24, 108, 205, 127, 10, 3, 222,
-    142, 25, 231, 24, 238, 210, 231, 23, 10, 3, 222, 142, 25, 230, 179, 10,
-    3, 222, 142, 25, 230, 148, 10, 3, 222, 142, 25, 223, 201, 10, 3, 222,
-    142, 25, 223, 180, 10, 3, 222, 142, 25, 222, 96, 10, 3, 222, 142, 25,
-    221, 166, 10, 3, 222, 142, 25, 221, 152, 10, 3, 222, 142, 25, 219, 146,
-    10, 3, 222, 142, 25, 218, 225, 10, 3, 222, 142, 25, 216, 232, 10, 3, 222,
-    142, 25, 216, 233, 108, 235, 89, 10, 3, 222, 142, 25, 216, 233, 108, 231,
-    53, 10, 3, 222, 142, 25, 216, 233, 108, 199, 145, 10, 3, 222, 142, 25,
-    216, 100, 10, 3, 222, 142, 25, 216, 101, 108, 212, 125, 10, 3, 222, 142,
-    25, 214, 121, 10, 3, 222, 142, 25, 212, 130, 10, 3, 222, 142, 25, 209,
-    185, 10, 3, 222, 142, 25, 206, 68, 10, 3, 222, 142, 25, 188, 10, 3, 222,
-    142, 25, 205, 127, 10, 3, 222, 142, 25, 203, 165, 10, 3, 222, 142, 25,
-    203, 113, 10, 3, 222, 142, 25, 203, 79, 10, 3, 222, 142, 25, 203, 5, 10,
-    3, 222, 142, 25, 202, 201, 10, 3, 222, 142, 25, 200, 213, 10, 3, 222,
-    142, 25, 199, 179, 10, 3, 222, 142, 25, 66, 10, 3, 222, 142, 25, 196,
-    169, 10, 3, 222, 142, 25, 196, 158, 10, 3, 222, 142, 25, 196, 116, 25,
-    168, 10, 3, 222, 142, 25, 196, 38, 10, 3, 222, 142, 25, 191, 30, 10, 3,
-    222, 128, 10, 3, 222, 129, 238, 210, 222, 128, 10, 3, 222, 117, 10, 3,
-    222, 113, 10, 3, 222, 111, 10, 3, 222, 110, 10, 3, 222, 108, 10, 3, 222,
-    109, 139, 222, 108, 10, 3, 222, 96, 10, 3, 222, 97, 25, 223, 202, 230,
-    155, 10, 3, 222, 91, 10, 3, 222, 92, 25, 249, 135, 10, 3, 222, 92, 238,
-    210, 222, 91, 10, 3, 222, 89, 10, 3, 222, 88, 10, 3, 222, 54, 10, 3, 222,
-    55, 220, 105, 25, 126, 139, 220, 105, 25, 66, 10, 3, 222, 55, 139, 222,
-    55, 220, 105, 25, 126, 139, 220, 105, 25, 66, 10, 3, 221, 242, 10, 3,
-    221, 166, 10, 3, 221, 167, 25, 249, 135, 10, 3, 221, 167, 25, 66, 10, 3,
-    221, 167, 25, 196, 158, 10, 3, 221, 152, 10, 3, 221, 141, 10, 3, 221,
-    127, 10, 3, 221, 126, 10, 3, 221, 124, 10, 3, 221, 125, 139, 221, 124,
-    10, 3, 220, 232, 10, 3, 220, 233, 139, 229, 159, 25, 250, 208, 220, 233,
-    139, 229, 159, 25, 250, 207, 10, 3, 220, 223, 10, 3, 220, 221, 10, 3,
-    220, 222, 195, 168, 20, 10, 3, 220, 220, 10, 3, 220, 211, 10, 3, 220,
-    212, 230, 155, 10, 3, 220, 210, 10, 3, 220, 197, 10, 3, 220, 198, 211,
-    63, 220, 197, 10, 3, 220, 190, 10, 3, 220, 167, 10, 3, 173, 10, 3, 220,
-    104, 10, 3, 220, 105, 25, 65, 10, 3, 220, 105, 25, 42, 108, 238, 33, 108,
-    140, 10, 3, 220, 105, 25, 42, 108, 231, 200, 10, 3, 220, 105, 25, 42,
-    108, 220, 37, 10, 3, 220, 105, 25, 251, 207, 10, 3, 220, 105, 25, 251,
-    132, 10, 3, 220, 105, 25, 250, 210, 191, 26, 199, 84, 10, 3, 220, 105,
-    25, 249, 135, 10, 3, 220, 105, 25, 248, 188, 10, 3, 220, 105, 25, 237,
-    225, 10, 3, 220, 105, 25, 234, 103, 10, 3, 220, 105, 25, 231, 240, 10, 3,
-    220, 105, 25, 231, 200, 10, 3, 220, 105, 25, 230, 168, 10, 3, 220, 105,
-    25, 230, 169, 108, 230, 168, 10, 3, 220, 105, 25, 140, 10, 3, 220, 105,
-    25, 230, 73, 10, 3, 220, 105, 25, 229, 159, 25, 212, 130, 10, 3, 220,
-    105, 25, 223, 202, 230, 155, 10, 3, 220, 105, 25, 223, 180, 10, 3, 220,
-    105, 25, 223, 181, 108, 140, 10, 3, 220, 105, 25, 223, 181, 108, 218,
-    225, 10, 3, 220, 105, 25, 221, 166, 10, 3, 220, 105, 25, 221, 141, 10, 3,
-    220, 105, 25, 220, 223, 10, 3, 220, 105, 25, 220, 211, 10, 3, 220, 105,
-    25, 220, 212, 108, 229, 159, 108, 65, 10, 3, 220, 105, 25, 220, 104, 10,
-    3, 220, 105, 25, 219, 89, 10, 3, 220, 105, 25, 218, 225, 10, 3, 220, 105,
-    25, 218, 210, 10, 3, 220, 105, 25, 216, 232, 10, 3, 220, 105, 25, 216,
-    233, 108, 234, 103, 10, 3, 220, 105, 25, 215, 101, 10, 3, 220, 105, 25,
-    214, 121, 10, 3, 220, 105, 25, 203, 114, 108, 200, 204, 10, 3, 220, 105,
-    25, 203, 59, 108, 231, 24, 108, 234, 28, 10, 3, 220, 105, 25, 203, 59,
-    108, 231, 24, 199, 84, 10, 3, 220, 105, 25, 203, 3, 10, 3, 220, 105, 25,
-    203, 4, 108, 203, 3, 10, 3, 220, 105, 25, 200, 204, 10, 3, 220, 105, 25,
-    199, 223, 10, 3, 220, 105, 25, 199, 209, 10, 3, 220, 105, 25, 199, 146,
-    108, 42, 108, 201, 5, 108, 180, 10, 3, 220, 105, 25, 66, 10, 3, 220, 105,
-    25, 126, 108, 65, 10, 3, 220, 105, 25, 126, 108, 126, 108, 66, 10, 3,
-    220, 105, 25, 196, 170, 108, 250, 209, 10, 3, 220, 105, 25, 196, 158, 10,
-    3, 220, 105, 25, 196, 38, 10, 3, 220, 105, 201, 189, 10, 3, 220, 102, 10,
-    3, 220, 103, 25, 203, 113, 10, 3, 220, 103, 25, 203, 114, 108, 200, 204,
-    10, 3, 220, 103, 230, 155, 10, 3, 220, 103, 230, 156, 139, 220, 103, 230,
-    156, 203, 113, 10, 3, 220, 98, 10, 3, 220, 37, 10, 3, 220, 38, 25, 220,
-    37, 10, 3, 220, 35, 10, 3, 220, 36, 25, 220, 197, 10, 3, 220, 36, 25,
-    220, 198, 108, 206, 68, 10, 3, 219, 146, 10, 3, 219, 127, 10, 3, 219,
-    115, 10, 3, 219, 89, 10, 3, 218, 225, 10, 3, 218, 226, 25, 249, 135, 10,
-    3, 218, 223, 10, 3, 218, 224, 25, 251, 207, 10, 3, 218, 224, 25, 249,
-    135, 10, 3, 218, 224, 25, 234, 9, 10, 3, 218, 224, 25, 234, 10, 199, 84,
-    10, 3, 218, 224, 25, 231, 209, 199, 84, 10, 3, 218, 224, 25, 229, 159,
-    25, 249, 135, 10, 3, 218, 224, 25, 223, 180, 10, 3, 218, 224, 25, 222,
-    113, 10, 3, 218, 224, 25, 222, 111, 10, 3, 218, 224, 25, 222, 112, 108,
-    250, 209, 10, 3, 218, 224, 25, 221, 166, 10, 3, 218, 224, 25, 220, 126,
-    108, 250, 209, 10, 3, 218, 224, 25, 220, 104, 10, 3, 218, 224, 25, 216,
-    233, 108, 234, 103, 10, 3, 218, 224, 25, 214, 121, 10, 3, 218, 224, 25,
-    212, 178, 10, 3, 218, 224, 25, 202, 223, 108, 250, 209, 10, 3, 218, 224,
-    25, 202, 192, 108, 248, 10, 10, 3, 218, 224, 25, 197, 82, 10, 3, 218,
-    224, 199, 84, 10, 3, 218, 224, 238, 210, 218, 223, 10, 3, 218, 224, 211,
-    63, 218, 223, 10, 3, 218, 224, 201, 189, 10, 3, 218, 224, 203, 94, 10, 3,
-    218, 222, 10, 3, 218, 216, 10, 3, 218, 217, 139, 218, 216, 10, 3, 218,
-    217, 211, 63, 218, 216, 10, 3, 218, 217, 203, 94, 10, 3, 218, 213, 10, 3,
-    218, 210, 10, 3, 218, 208, 10, 3, 218, 209, 139, 218, 208, 10, 3, 218,
-    209, 139, 218, 209, 231, 201, 139, 231, 200, 10, 3, 174, 10, 3, 217, 160,
-    25, 199, 209, 10, 3, 217, 160, 230, 155, 10, 3, 217, 152, 10, 3, 217,
-    120, 10, 3, 217, 65, 10, 3, 217, 39, 10, 3, 217, 38, 10, 3, 216, 232, 10,
-    3, 216, 173, 10, 3, 216, 100, 10, 3, 216, 44, 10, 3, 215, 155, 10, 3,
-    215, 156, 139, 215, 155, 10, 3, 215, 140, 10, 3, 215, 141, 230, 155, 10,
-    3, 215, 119, 10, 3, 215, 105, 10, 3, 215, 101, 10, 3, 215, 102, 25, 65,
-    10, 3, 215, 102, 25, 220, 197, 10, 3, 215, 102, 25, 191, 123, 10, 3, 215,
-    102, 139, 215, 101, 10, 3, 215, 102, 139, 215, 102, 25, 42, 108, 180, 10,
-    3, 215, 102, 238, 210, 215, 101, 10, 3, 215, 99, 10, 3, 215, 100, 25, 65,
-    10, 3, 215, 100, 25, 42, 108, 237, 44, 10, 3, 215, 100, 25, 237, 44, 10,
-    3, 215, 100, 230, 155, 10, 3, 180, 10, 3, 214, 253, 10, 3, 214, 240, 10,
-    3, 214, 241, 223, 92, 10, 3, 214, 241, 25, 203, 6, 199, 84, 10, 3, 214,
-    241, 211, 63, 214, 240, 10, 3, 214, 239, 10, 3, 214, 231, 212, 116, 10,
-    3, 214, 230, 10, 3, 214, 229, 10, 3, 214, 121, 10, 3, 214, 122, 25, 65,
-    10, 3, 214, 122, 25, 196, 158, 10, 3, 214, 122, 203, 94, 10, 3, 213, 219,
-    10, 3, 213, 220, 25, 71, 10, 3, 213, 210, 10, 3, 213, 180, 10, 3, 213,
-    181, 25, 231, 209, 199, 84, 10, 3, 213, 181, 25, 231, 201, 108, 231, 209,
-    199, 84, 10, 3, 213, 176, 10, 3, 213, 177, 25, 251, 132, 10, 3, 213, 177,
-    25, 250, 209, 10, 3, 213, 177, 25, 250, 210, 108, 250, 209, 10, 3, 213,
-    177, 25, 230, 168, 10, 3, 213, 177, 25, 216, 233, 108, 231, 209, 199, 84,
-    10, 3, 213, 177, 25, 214, 121, 10, 3, 213, 177, 25, 212, 130, 10, 3, 213,
-    177, 25, 203, 113, 10, 3, 213, 177, 25, 203, 114, 108, 42, 251, 132, 10,
-    3, 213, 177, 25, 203, 114, 108, 250, 209, 10, 3, 213, 177, 25, 203, 114,
-    108, 250, 210, 108, 250, 209, 10, 3, 213, 177, 25, 196, 170, 108, 250,
-    209, 10, 3, 213, 177, 25, 196, 38, 10, 3, 213, 163, 10, 3, 212, 178, 10,
-    3, 212, 147, 10, 3, 212, 130, 10, 3, 212, 131, 220, 103, 25, 231, 200,
-    10, 3, 212, 131, 220, 103, 25, 217, 39, 10, 3, 212, 131, 220, 103, 25,
-    205, 169, 10, 3, 212, 131, 220, 103, 25, 205, 170, 139, 212, 131, 220,
-    103, 25, 205, 169, 10, 3, 212, 131, 220, 103, 25, 196, 38, 10, 3, 212,
-    131, 199, 84, 10, 3, 212, 131, 139, 212, 130, 10, 3, 212, 131, 238, 210,
-    212, 130, 10, 3, 212, 131, 238, 210, 212, 131, 220, 103, 139, 220, 102,
-    10, 3, 212, 125, 10, 3, 212, 126, 252, 73, 25, 250, 203, 10, 3, 212, 126,
-    252, 73, 25, 248, 188, 10, 3, 212, 126, 252, 73, 25, 235, 82, 10, 3, 212,
-    126, 252, 73, 25, 230, 168, 10, 3, 212, 126, 252, 73, 25, 223, 202, 230,
-    155, 10, 3, 212, 126, 252, 73, 25, 222, 111, 10, 3, 212, 126, 252, 73,
-    25, 173, 10, 3, 212, 126, 252, 73, 25, 214, 121, 10, 3, 212, 126, 252,
-    73, 25, 202, 189, 10, 3, 212, 126, 252, 73, 25, 196, 169, 10, 3, 212,
-    126, 221, 125, 25, 248, 188, 10, 3, 212, 126, 221, 125, 25, 248, 189, 66,
-    10, 3, 168, 10, 3, 210, 210, 10, 3, 210, 166, 10, 3, 210, 137, 10, 3,
-    209, 243, 10, 3, 209, 185, 10, 3, 209, 186, 25, 65, 10, 3, 209, 186, 25,
-    252, 155, 10, 3, 209, 186, 25, 248, 188, 10, 3, 209, 186, 25, 248, 10,
-    10, 3, 209, 186, 25, 71, 10, 3, 209, 186, 25, 68, 10, 3, 209, 186, 25,
-    228, 30, 10, 3, 209, 186, 25, 66, 10, 3, 209, 186, 25, 196, 169, 10, 3,
-    209, 186, 238, 210, 209, 185, 10, 3, 209, 121, 10, 3, 209, 122, 25, 222,
-    91, 10, 3, 209, 122, 25, 196, 158, 10, 3, 209, 122, 25, 191, 123, 10, 3,
-    209, 122, 211, 63, 209, 121, 10, 3, 165, 10, 3, 207, 176, 10, 3, 207, 1,
-    10, 3, 206, 68, 10, 3, 188, 10, 3, 205, 186, 212, 116, 10, 3, 205, 185,
-    10, 3, 205, 186, 25, 65, 10, 3, 205, 186, 25, 235, 89, 10, 3, 205, 186,
-    25, 235, 87, 10, 3, 205, 186, 25, 140, 10, 3, 205, 186, 25, 222, 96, 10,
-    3, 205, 186, 25, 220, 197, 10, 3, 205, 186, 25, 218, 208, 10, 3, 205,
-    186, 25, 216, 100, 10, 3, 205, 186, 25, 212, 130, 10, 3, 205, 186, 25,
-    205, 169, 10, 3, 205, 186, 25, 203, 79, 10, 3, 205, 186, 25, 199, 236,
-    10, 3, 205, 186, 25, 196, 169, 10, 3, 205, 186, 25, 196, 164, 10, 3, 205,
-    186, 25, 196, 120, 10, 3, 205, 186, 25, 196, 62, 10, 3, 205, 186, 25,
-    196, 38, 10, 3, 205, 186, 139, 205, 185, 10, 3, 205, 186, 230, 155, 10,
-    3, 205, 169, 10, 3, 205, 170, 220, 105, 25, 250, 207, 10, 3, 205, 136,
-    10, 3, 205, 127, 10, 3, 203, 165, 10, 3, 203, 163, 10, 3, 203, 164, 25,
-    65, 10, 3, 203, 164, 25, 249, 135, 10, 3, 203, 164, 25, 231, 23, 10, 3,
-    203, 164, 25, 214, 121, 10, 3, 203, 164, 25, 203, 3, 10, 3, 203, 164, 25,
-    197, 64, 10, 3, 203, 164, 25, 66, 10, 3, 203, 164, 25, 126, 108, 65, 10,
-    3, 203, 161, 10, 3, 203, 159, 10, 3, 203, 131, 10, 3, 203, 113, 10, 3,
-    203, 114, 228, 159, 10, 3, 203, 114, 139, 203, 114, 231, 232, 139, 231,
-    232, 231, 201, 139, 231, 200, 10, 3, 203, 114, 139, 203, 114, 199, 237,
-    139, 199, 237, 231, 201, 139, 231, 200, 10, 3, 203, 106, 10, 3, 203, 101,
-    10, 3, 203, 97, 10, 3, 203, 96, 10, 3, 203, 93, 10, 3, 203, 79, 10, 3,
-    203, 80, 25, 65, 10, 3, 203, 80, 25, 223, 180, 10, 3, 203, 73, 10, 3,
-    203, 74, 25, 65, 10, 3, 203, 74, 25, 249, 115, 10, 3, 203, 74, 25, 247,
-    242, 10, 3, 203, 74, 25, 236, 243, 10, 3, 203, 74, 25, 231, 200, 10, 3,
-    203, 74, 25, 223, 201, 10, 3, 203, 74, 25, 223, 202, 230, 155, 10, 3,
-    203, 74, 25, 220, 190, 10, 3, 203, 74, 25, 218, 210, 10, 3, 203, 74, 25,
-    215, 140, 10, 3, 203, 74, 25, 205, 169, 10, 3, 203, 67, 10, 3, 203, 62,
-    10, 3, 203, 63, 199, 84, 10, 3, 203, 63, 139, 203, 63, 247, 231, 139,
-    247, 230, 10, 3, 203, 58, 10, 3, 203, 5, 10, 3, 203, 6, 139, 223, 93,
-    203, 5, 10, 3, 203, 3, 10, 3, 203, 1, 10, 3, 202, 222, 10, 3, 202, 223,
-    230, 155, 10, 3, 202, 201, 10, 3, 202, 199, 10, 3, 202, 200, 139, 202,
-    200, 203, 3, 10, 3, 202, 191, 10, 3, 202, 189, 10, 3, 201, 4, 10, 3, 201,
-    5, 139, 201, 4, 10, 3, 200, 216, 10, 3, 200, 215, 10, 3, 200, 213, 10, 3,
-    200, 204, 10, 3, 200, 203, 10, 3, 200, 175, 10, 3, 200, 174, 10, 3, 190,
-    190, 10, 3, 199, 252, 250, 193, 10, 3, 199, 252, 25, 229, 158, 10, 3,
-    199, 252, 25, 216, 100, 10, 3, 199, 252, 230, 155, 10, 3, 199, 236, 10,
-    3, 199, 237, 139, 199, 237, 213, 220, 139, 213, 220, 236, 223, 139, 236,
-    222, 10, 3, 199, 237, 201, 189, 10, 3, 199, 223, 10, 3, 199, 224, 25,
-    248, 188, 10, 3, 199, 224, 25, 230, 168, 10, 3, 199, 224, 25, 203, 113,
-    10, 3, 199, 224, 25, 203, 5, 10, 3, 199, 224, 25, 197, 82, 10, 3, 199,
-    224, 25, 196, 158, 10, 3, 199, 209, 10, 3, 199, 179, 10, 3, 199, 145, 10,
-    3, 199, 146, 230, 155, 10, 3, 198, 193, 10, 3, 198, 194, 199, 84, 10, 3,
-    198, 154, 10, 3, 198, 131, 10, 3, 198, 132, 25, 199, 209, 10, 3, 198,
-    132, 139, 198, 131, 10, 3, 198, 132, 139, 198, 132, 231, 232, 139, 231,
-    232, 231, 201, 139, 231, 200, 10, 3, 197, 94, 10, 3, 197, 82, 10, 3, 197,
-    80, 10, 3, 197, 76, 10, 3, 197, 64, 10, 3, 197, 65, 139, 197, 65, 191,
-    124, 139, 191, 123, 10, 3, 66, 10, 3, 126, 230, 168, 10, 3, 126, 126, 66,
-    10, 3, 126, 139, 126, 210, 221, 139, 210, 221, 231, 201, 139, 231, 200,
-    10, 3, 126, 139, 126, 200, 176, 139, 200, 175, 10, 3, 126, 139, 126, 126,
-    207, 18, 139, 126, 207, 17, 10, 3, 196, 169, 10, 3, 196, 164, 10, 3, 196,
-    158, 10, 3, 196, 159, 220, 190, 10, 3, 196, 159, 25, 249, 135, 10, 3,
-    196, 159, 25, 216, 100, 10, 3, 196, 159, 25, 126, 108, 126, 108, 66, 10,
-    3, 196, 159, 25, 126, 108, 126, 108, 126, 230, 155, 10, 3, 196, 159, 230,
-    155, 10, 3, 196, 159, 203, 94, 10, 3, 196, 159, 203, 95, 25, 249, 135,
-    10, 3, 196, 153, 10, 3, 196, 120, 10, 3, 196, 121, 25, 220, 104, 10, 3,
-    196, 121, 25, 216, 233, 108, 238, 32, 10, 3, 196, 121, 25, 203, 163, 10,
-    3, 196, 121, 25, 66, 10, 3, 196, 119, 10, 3, 196, 115, 10, 3, 196, 116,
-    25, 222, 54, 10, 3, 196, 116, 25, 168, 10, 3, 196, 113, 10, 3, 196, 114,
-    230, 155, 10, 3, 196, 62, 10, 3, 196, 63, 238, 210, 196, 62, 10, 3, 196,
-    63, 203, 94, 10, 3, 196, 60, 10, 3, 196, 61, 25, 42, 108, 140, 10, 3,
-    196, 61, 25, 42, 108, 180, 10, 3, 196, 61, 25, 251, 207, 10, 3, 196, 61,
-    25, 140, 10, 3, 196, 61, 25, 212, 130, 10, 3, 196, 61, 25, 196, 169, 10,
-    3, 196, 61, 25, 196, 170, 108, 250, 209, 10, 3, 196, 61, 25, 196, 170,
-    108, 248, 188, 10, 3, 196, 59, 10, 3, 196, 56, 10, 3, 196, 55, 10, 3,
-    196, 51, 10, 3, 196, 52, 25, 65, 10, 3, 196, 52, 25, 250, 203, 10, 3,
-    196, 52, 25, 164, 10, 3, 196, 52, 25, 235, 75, 10, 3, 196, 52, 25, 231,
-    240, 10, 3, 196, 52, 25, 231, 222, 10, 3, 196, 52, 25, 231, 209, 199, 84,
-    10, 3, 196, 52, 25, 231, 200, 10, 3, 196, 52, 25, 230, 179, 10, 3, 196,
-    52, 25, 140, 10, 3, 196, 52, 25, 223, 201, 10, 3, 196, 52, 25, 223, 180,
-    10, 3, 196, 52, 25, 223, 62, 10, 3, 196, 52, 25, 221, 166, 10, 3, 196,
-    52, 25, 218, 208, 10, 3, 196, 52, 25, 216, 44, 10, 3, 196, 52, 25, 168,
-    10, 3, 196, 52, 25, 203, 113, 10, 3, 196, 52, 25, 202, 199, 10, 3, 196,
-    52, 25, 197, 94, 10, 3, 196, 52, 25, 126, 108, 230, 168, 10, 3, 196, 52,
-    25, 196, 158, 10, 3, 196, 52, 25, 196, 49, 10, 3, 196, 49, 10, 3, 196,
-    50, 25, 66, 10, 3, 196, 38, 10, 3, 196, 39, 25, 65, 10, 3, 196, 39, 25,
-    220, 232, 10, 3, 196, 39, 25, 220, 197, 10, 3, 196, 39, 25, 199, 209, 10,
-    3, 196, 34, 10, 3, 196, 37, 10, 3, 196, 35, 10, 3, 196, 31, 10, 3, 196,
-    16, 10, 3, 196, 17, 25, 222, 54, 10, 3, 196, 14, 10, 3, 191, 123, 10, 3,
-    191, 124, 199, 84, 10, 3, 191, 124, 112, 25, 220, 197, 10, 3, 191, 118,
-    10, 3, 191, 107, 10, 3, 191, 86, 10, 3, 191, 30, 10, 3, 191, 31, 139,
-    191, 30, 10, 3, 191, 29, 10, 3, 191, 27, 10, 3, 191, 28, 222, 116, 199,
-    84, 10, 3, 191, 22, 10, 3, 191, 13, 10, 3, 190, 251, 10, 3, 190, 249, 10,
-    3, 190, 250, 25, 65, 10, 3, 190, 248, 10, 3, 190, 247, 10, 3, 222, 79,
-    234, 137, 10, 3, 252, 156, 25, 212, 130, 10, 3, 252, 73, 25, 65, 10, 3,
-    251, 146, 25, 220, 213, 10, 3, 238, 23, 221, 125, 25, 196, 170, 108, 217,
-    39, 10, 3, 238, 21, 10, 3, 236, 223, 108, 203, 5, 10, 3, 235, 88, 25,
-    203, 113, 10, 3, 233, 181, 25, 230, 168, 10, 3, 233, 181, 25, 203, 113,
-    10, 3, 231, 239, 25, 251, 133, 108, 222, 97, 108, 65, 10, 3, 231, 239,
-    25, 250, 207, 10, 3, 231, 164, 10, 3, 231, 42, 10, 3, 228, 131, 10, 3,
-    222, 142, 25, 251, 91, 10, 3, 222, 142, 25, 250, 206, 10, 3, 222, 142,
-    25, 231, 23, 10, 3, 222, 142, 25, 230, 168, 10, 3, 222, 142, 25, 229,
-    159, 25, 250, 207, 10, 3, 222, 142, 25, 218, 208, 10, 3, 222, 142, 25,
-    168, 10, 3, 222, 142, 25, 202, 253, 10, 3, 222, 142, 25, 197, 94, 10, 3,
-    222, 142, 25, 196, 60, 10, 3, 220, 105, 25, 231, 53, 10, 3, 218, 224,
-    203, 95, 25, 249, 135, 10, 3, 218, 224, 25, 234, 10, 108, 220, 37, 10, 3,
-    218, 224, 25, 203, 5, 10, 3, 216, 172, 10, 3, 215, 100, 25, 191, 123, 10,
-    3, 214, 252, 10, 3, 213, 179, 10, 3, 213, 178, 10, 3, 213, 177, 25, 249,
-    115, 10, 3, 213, 177, 25, 231, 53, 10, 3, 212, 148, 206, 122, 213, 170,
-    237, 124, 10, 3, 209, 244, 250, 193, 10, 3, 209, 125, 10, 3, 205, 186,
-    25, 223, 202, 230, 155, 10, 3, 198, 185, 10, 3, 196, 121, 25, 216, 232,
-    10, 3, 126, 66, 10, 167, 3, 105, 250, 209, 10, 167, 3, 115, 250, 209, 10,
-    167, 3, 232, 128, 250, 209, 10, 167, 3, 232, 226, 250, 209, 10, 167, 3,
-    202, 136, 250, 209, 10, 167, 3, 203, 247, 250, 209, 10, 167, 3, 234, 164,
-    250, 209, 10, 167, 3, 213, 175, 250, 209, 10, 167, 3, 115, 236, 222, 10,
-    167, 3, 232, 128, 236, 222, 10, 167, 3, 232, 226, 236, 222, 10, 167, 3,
-    202, 136, 236, 222, 10, 167, 3, 203, 247, 236, 222, 10, 167, 3, 234, 164,
-    236, 222, 10, 167, 3, 213, 175, 236, 222, 10, 167, 3, 232, 128, 66, 10,
-    167, 3, 232, 226, 66, 10, 167, 3, 202, 136, 66, 10, 167, 3, 203, 247, 66,
-    10, 167, 3, 234, 164, 66, 10, 167, 3, 213, 175, 66, 10, 167, 3, 91, 231,
-    136, 10, 167, 3, 105, 231, 136, 10, 167, 3, 115, 231, 136, 10, 167, 3,
-    232, 128, 231, 136, 10, 167, 3, 232, 226, 231, 136, 10, 167, 3, 202, 136,
-    231, 136, 10, 167, 3, 203, 247, 231, 136, 10, 167, 3, 234, 164, 231, 136,
-    10, 167, 3, 213, 175, 231, 136, 10, 167, 3, 91, 231, 133, 10, 167, 3,
-    105, 231, 133, 10, 167, 3, 115, 231, 133, 10, 167, 3, 232, 128, 231, 133,
-    10, 167, 3, 232, 226, 231, 133, 10, 167, 3, 105, 203, 131, 10, 167, 3,
-    115, 203, 131, 10, 167, 3, 115, 203, 132, 195, 168, 20, 10, 167, 3, 232,
-    128, 203, 131, 10, 167, 3, 232, 226, 203, 131, 10, 167, 3, 202, 136, 203,
-    131, 10, 167, 3, 203, 247, 203, 131, 10, 167, 3, 234, 164, 203, 131, 10,
-    167, 3, 213, 175, 203, 131, 10, 167, 3, 91, 203, 124, 10, 167, 3, 105,
-    203, 124, 10, 167, 3, 115, 203, 124, 10, 167, 3, 115, 203, 125, 195, 168,
-    20, 10, 167, 3, 232, 128, 203, 124, 10, 167, 3, 232, 226, 203, 124, 10,
-    167, 3, 203, 132, 25, 231, 223, 108, 236, 222, 10, 167, 3, 203, 132, 25,
-    231, 223, 108, 216, 44, 10, 167, 3, 91, 247, 226, 10, 167, 3, 105, 247,
-    226, 10, 167, 3, 115, 247, 226, 10, 167, 3, 115, 247, 227, 195, 168, 20,
-    10, 167, 3, 232, 128, 247, 226, 10, 167, 3, 232, 226, 247, 226, 10, 167,
-    3, 115, 195, 168, 232, 146, 234, 11, 10, 167, 3, 115, 195, 168, 232, 146,
-    234, 8, 10, 167, 3, 232, 128, 195, 168, 232, 146, 219, 116, 10, 167, 3,
-    232, 128, 195, 168, 232, 146, 219, 114, 10, 167, 3, 232, 128, 195, 168,
-    232, 146, 219, 117, 65, 10, 167, 3, 232, 128, 195, 168, 232, 146, 219,
-    117, 250, 120, 10, 167, 3, 202, 136, 195, 168, 232, 146, 250, 205, 10,
-    167, 3, 203, 247, 195, 168, 232, 146, 223, 171, 10, 167, 3, 203, 247,
-    195, 168, 232, 146, 223, 173, 65, 10, 167, 3, 203, 247, 195, 168, 232,
-    146, 223, 173, 250, 120, 10, 167, 3, 234, 164, 195, 168, 232, 146, 196,
-    33, 10, 167, 3, 234, 164, 195, 168, 232, 146, 196, 32, 10, 167, 3, 213,
-    175, 195, 168, 232, 146, 223, 188, 10, 167, 3, 213, 175, 195, 168, 232,
-    146, 223, 187, 10, 167, 3, 213, 175, 195, 168, 232, 146, 223, 186, 10,
-    167, 3, 213, 175, 195, 168, 232, 146, 223, 189, 65, 10, 167, 3, 105, 250,
-    210, 199, 84, 10, 167, 3, 115, 250, 210, 199, 84, 10, 167, 3, 232, 128,
-    250, 210, 199, 84, 10, 167, 3, 232, 226, 250, 210, 199, 84, 10, 167, 3,
-    202, 136, 250, 210, 199, 84, 10, 167, 3, 91, 249, 99, 10, 167, 3, 105,
-    249, 99, 10, 167, 3, 115, 249, 99, 10, 167, 3, 232, 128, 249, 99, 10,
-    167, 3, 232, 128, 249, 100, 195, 168, 20, 10, 167, 3, 232, 226, 249, 99,
-    10, 167, 3, 232, 226, 249, 100, 195, 168, 20, 10, 167, 3, 213, 188, 10,
-    167, 3, 213, 189, 10, 167, 3, 91, 234, 7, 10, 167, 3, 105, 234, 7, 10,
-    167, 3, 91, 199, 1, 236, 222, 10, 167, 3, 105, 198, 254, 236, 222, 10,
-    167, 3, 232, 226, 202, 123, 236, 222, 10, 167, 3, 91, 199, 1, 195, 168,
-    232, 146, 65, 10, 167, 3, 105, 198, 254, 195, 168, 232, 146, 65, 10, 167,
-    3, 91, 234, 160, 250, 209, 10, 167, 3, 91, 208, 23, 250, 209, 10, 167, 3,
-    39, 250, 196, 91, 202, 124, 10, 167, 3, 39, 250, 196, 91, 208, 22, 10,
-    167, 3, 91, 208, 23, 230, 149, 10, 167, 3, 91, 132, 230, 149, 10, 167, 3,
-    234, 138, 91, 199, 0, 10, 167, 3, 234, 138, 105, 198, 253, 10, 167, 3,
-    234, 138, 232, 135, 10, 167, 3, 234, 138, 233, 15, 10, 167, 3, 232, 128,
-    126, 195, 168, 20, 10, 167, 3, 232, 226, 126, 195, 168, 20, 10, 167, 3,
-    202, 136, 126, 195, 168, 20, 10, 167, 3, 203, 247, 126, 195, 168, 20, 10,
-    167, 3, 234, 164, 126, 195, 168, 20, 10, 167, 3, 213, 175, 126, 195, 168,
-    20, 10, 208, 152, 3, 39, 250, 196, 193, 23, 236, 205, 10, 208, 152, 3,
-    81, 242, 83, 10, 208, 152, 3, 237, 39, 242, 83, 10, 208, 152, 3, 237, 39,
-    197, 237, 10, 208, 152, 3, 237, 39, 208, 29, 10, 3, 252, 156, 25, 212,
-    131, 199, 84, 10, 3, 252, 156, 25, 203, 3, 10, 3, 252, 43, 25, 234, 9,
-    10, 3, 249, 136, 25, 236, 223, 199, 84, 10, 3, 249, 122, 25, 252, 72, 10,
-    3, 249, 122, 25, 213, 219, 10, 3, 249, 122, 25, 191, 123, 10, 3, 248, 11,
-    139, 248, 11, 25, 214, 253, 10, 3, 238, 33, 25, 199, 209, 10, 3, 238, 23,
-    25, 220, 197, 10, 3, 237, 0, 25, 223, 201, 10, 3, 237, 0, 25, 126, 126,
-    66, 10, 3, 236, 254, 25, 196, 158, 10, 3, 235, 83, 25, 251, 91, 10, 3,
-    235, 83, 25, 250, 209, 10, 3, 235, 83, 25, 250, 210, 250, 183, 219, 224,
-    10, 3, 235, 83, 25, 236, 243, 10, 3, 235, 83, 25, 235, 75, 10, 3, 235,
-    83, 25, 234, 28, 10, 3, 235, 83, 25, 231, 240, 10, 3, 235, 83, 25, 231,
-    53, 10, 3, 235, 83, 25, 231, 33, 230, 155, 10, 3, 235, 83, 25, 231, 23,
-    10, 3, 235, 83, 25, 140, 10, 3, 235, 83, 25, 229, 158, 10, 3, 235, 83,
-    25, 223, 202, 230, 155, 10, 3, 235, 83, 25, 222, 54, 10, 3, 235, 83, 25,
-    220, 197, 10, 3, 235, 83, 25, 220, 190, 10, 3, 235, 83, 25, 220, 191,
-    108, 222, 54, 10, 3, 235, 83, 25, 220, 92, 10, 3, 235, 83, 25, 220, 35,
-    10, 3, 235, 83, 25, 220, 36, 25, 220, 197, 10, 3, 235, 83, 25, 218, 214,
-    108, 231, 23, 10, 3, 235, 83, 25, 217, 39, 10, 3, 235, 83, 25, 216, 173,
-    10, 3, 235, 83, 25, 216, 100, 10, 3, 235, 83, 25, 213, 219, 10, 3, 235,
-    83, 25, 209, 185, 10, 3, 235, 83, 25, 203, 113, 10, 3, 235, 83, 25, 202,
-    223, 230, 155, 10, 3, 234, 219, 25, 220, 197, 10, 3, 234, 219, 25, 210,
-    137, 10, 3, 234, 29, 192, 235, 10, 3, 234, 10, 238, 210, 234, 9, 10, 3,
-    233, 181, 203, 95, 25, 250, 209, 10, 3, 233, 181, 203, 95, 25, 229, 158,
-    10, 3, 233, 181, 203, 95, 25, 223, 202, 230, 155, 10, 3, 233, 181, 203,
-    95, 25, 173, 10, 3, 233, 181, 203, 95, 25, 220, 37, 10, 3, 233, 181, 203,
-    95, 25, 216, 232, 10, 3, 233, 181, 203, 95, 25, 216, 173, 10, 3, 233,
-    181, 203, 95, 25, 201, 4, 10, 3, 233, 181, 25, 201, 4, 10, 3, 231, 239,
-    25, 249, 121, 10, 3, 231, 239, 25, 237, 0, 230, 155, 10, 3, 231, 239, 25,
-    235, 83, 25, 223, 202, 230, 155, 10, 3, 231, 239, 25, 235, 83, 25, 222,
-    54, 10, 3, 231, 239, 25, 234, 31, 10, 3, 231, 239, 25, 231, 240, 10, 3,
-    231, 239, 25, 231, 201, 108, 237, 44, 10, 3, 231, 239, 25, 231, 201, 108,
-    214, 121, 10, 3, 231, 239, 25, 230, 105, 108, 65, 10, 3, 231, 239, 25,
-    220, 191, 108, 222, 54, 10, 3, 231, 239, 25, 220, 35, 10, 3, 231, 239,
-    25, 220, 36, 25, 220, 197, 10, 3, 231, 239, 25, 218, 213, 10, 3, 231,
-    239, 25, 215, 101, 10, 3, 231, 239, 25, 214, 121, 10, 3, 231, 239, 25,
-    214, 122, 108, 234, 218, 10, 3, 231, 239, 25, 214, 122, 108, 231, 53, 10,
-    3, 231, 239, 25, 203, 73, 10, 3, 231, 239, 25, 191, 13, 10, 3, 231, 234,
-    206, 122, 213, 170, 237, 124, 10, 3, 231, 135, 25, 66, 10, 3, 231, 24,
-    25, 231, 24, 238, 210, 231, 23, 10, 3, 230, 178, 25, 223, 202, 230, 155,
-    10, 3, 230, 169, 108, 231, 24, 25, 199, 209, 10, 3, 230, 105, 199, 85,
-    230, 155, 10, 3, 229, 159, 25, 250, 210, 139, 229, 159, 25, 250, 209, 10,
-    3, 222, 142, 25, 248, 10, 10, 3, 222, 142, 25, 155, 10, 3, 222, 142, 25,
-    126, 126, 66, 10, 3, 222, 142, 25, 196, 62, 10, 3, 220, 105, 25, 190,
-    252, 139, 190, 251, 10, 3, 220, 93, 10, 3, 220, 91, 10, 3, 220, 90, 10,
-    3, 220, 89, 10, 3, 220, 88, 10, 3, 220, 87, 10, 3, 220, 86, 10, 3, 220,
-    85, 139, 220, 85, 230, 155, 10, 3, 220, 84, 10, 3, 220, 83, 139, 220, 82,
-    10, 3, 220, 81, 10, 3, 220, 80, 10, 3, 220, 79, 10, 3, 220, 78, 10, 3,
-    220, 77, 10, 3, 220, 76, 10, 3, 220, 75, 10, 3, 220, 74, 10, 3, 220, 73,
-    10, 3, 220, 72, 10, 3, 220, 71, 10, 3, 220, 70, 10, 3, 220, 69, 10, 3,
-    220, 68, 10, 3, 220, 67, 10, 3, 220, 66, 10, 3, 220, 65, 10, 3, 220, 64,
-    10, 3, 220, 62, 10, 3, 220, 63, 25, 230, 179, 10, 3, 220, 63, 25, 223,
-    201, 10, 3, 220, 63, 25, 210, 138, 108, 218, 222, 10, 3, 220, 63, 25,
-    210, 138, 108, 210, 138, 108, 218, 222, 10, 3, 220, 63, 25, 196, 170,
-    108, 249, 153, 10, 3, 220, 61, 10, 3, 220, 60, 10, 3, 220, 59, 10, 3,
-    220, 58, 10, 3, 220, 57, 10, 3, 220, 56, 10, 3, 220, 55, 10, 3, 220, 54,
-    10, 3, 220, 53, 10, 3, 220, 52, 10, 3, 220, 50, 10, 3, 220, 51, 25, 250,
-    209, 10, 3, 220, 51, 25, 249, 135, 10, 3, 220, 51, 25, 235, 74, 230, 156,
-    230, 155, 10, 3, 220, 51, 25, 220, 223, 10, 3, 220, 51, 25, 173, 10, 3,
-    220, 51, 25, 199, 179, 10, 3, 220, 51, 25, 199, 145, 10, 3, 220, 51, 25,
-    196, 169, 10, 3, 220, 51, 25, 196, 158, 10, 3, 220, 51, 25, 196, 49, 10,
-    3, 220, 49, 10, 3, 220, 47, 10, 3, 220, 48, 25, 235, 87, 10, 3, 220, 48,
-    25, 231, 240, 10, 3, 220, 48, 25, 223, 201, 10, 3, 220, 48, 25, 223, 202,
-    230, 155, 10, 3, 220, 48, 25, 213, 219, 10, 3, 220, 48, 25, 210, 138,
-    108, 210, 138, 108, 218, 222, 10, 3, 220, 48, 25, 203, 98, 108, 221, 166,
-    10, 3, 220, 48, 25, 196, 158, 10, 3, 220, 48, 25, 196, 49, 10, 3, 220,
-    45, 10, 3, 220, 44, 10, 3, 218, 224, 230, 156, 25, 250, 209, 10, 3, 218,
-    224, 25, 236, 222, 10, 3, 218, 224, 25, 230, 73, 10, 3, 218, 224, 25,
-    210, 137, 10, 3, 218, 224, 25, 210, 138, 108, 210, 138, 108, 218, 222,
-    10, 3, 218, 224, 25, 199, 209, 10, 3, 216, 101, 108, 191, 122, 10, 3,
-    215, 102, 139, 215, 102, 25, 231, 240, 10, 3, 215, 102, 139, 215, 102,
-    25, 222, 96, 10, 3, 213, 177, 25, 237, 0, 230, 155, 10, 3, 213, 177, 25,
-    231, 23, 10, 3, 213, 177, 25, 230, 160, 10, 3, 213, 177, 25, 229, 158,
-    10, 3, 213, 177, 25, 221, 242, 10, 3, 213, 177, 25, 220, 88, 10, 3, 213,
-    177, 25, 217, 39, 10, 3, 213, 177, 25, 210, 138, 108, 210, 137, 10, 3,
-    213, 177, 25, 66, 10, 3, 213, 177, 25, 126, 108, 66, 10, 3, 213, 177, 25,
-    196, 49, 10, 3, 205, 186, 230, 156, 25, 140, 10, 3, 205, 186, 25, 234,
-    103, 10, 3, 205, 186, 25, 203, 114, 250, 183, 219, 224, 10, 3, 205, 186,
-    25, 199, 209, 10, 3, 203, 162, 199, 84, 10, 3, 203, 114, 139, 203, 113,
-    10, 3, 203, 114, 108, 228, 151, 10, 3, 203, 114, 108, 214, 229, 10, 3,
-    203, 114, 108, 205, 127, 10, 3, 203, 4, 108, 235, 83, 25, 213, 219, 10,
-    3, 203, 4, 108, 234, 219, 25, 251, 132, 10, 3, 202, 223, 25, 199, 209,
-    10, 3, 199, 210, 108, 205, 185, 10, 3, 197, 77, 25, 231, 209, 199, 84,
-    10, 3, 197, 77, 25, 115, 236, 222, 10, 3, 196, 61, 223, 92, 10, 3, 196,
-    61, 25, 196, 158, 10, 3, 196, 52, 25, 237, 224, 10, 3, 196, 52, 25, 220,
-    46, 10, 3, 196, 52, 25, 218, 222, 10, 3, 191, 122, 10, 3, 190, 252, 139,
-    190, 252, 108, 205, 127, 10, 3, 190, 250, 25, 115, 236, 223, 199, 84,
-    238, 134, 3, 242, 198, 238, 134, 3, 242, 197, 238, 134, 3, 242, 196, 238,
-    134, 3, 242, 195, 238, 134, 3, 242, 194, 238, 134, 3, 242, 193, 238, 134,
-    3, 242, 192, 238, 134, 3, 242, 191, 238, 134, 3, 242, 190, 238, 134, 3,
-    242, 189, 238, 134, 3, 242, 188, 238, 134, 3, 242, 187, 238, 134, 3, 242,
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-    134, 3, 242, 179, 238, 134, 3, 242, 178, 238, 134, 3, 242, 177, 238, 134,
-    3, 242, 176, 238, 134, 3, 242, 175, 238, 134, 3, 242, 174, 238, 134, 3,
-    242, 173, 238, 134, 3, 242, 172, 238, 134, 3, 242, 171, 238, 134, 3, 242,
-    170, 238, 134, 3, 242, 169, 238, 134, 3, 242, 168, 238, 134, 3, 242, 167,
-    238, 134, 3, 242, 166, 238, 134, 3, 242, 165, 238, 134, 3, 242, 164, 238,
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-    3, 242, 144, 238, 134, 3, 242, 143, 238, 134, 3, 242, 142, 238, 134, 3,
-    242, 141, 238, 134, 3, 242, 140, 238, 134, 3, 242, 139, 238, 134, 3, 242,
-    138, 238, 134, 3, 242, 137, 238, 134, 3, 242, 136, 238, 134, 3, 242, 135,
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-    14, 7, 247, 164, 14, 7, 247, 163, 14, 7, 247, 162, 14, 7, 238, 126, 14,
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-    238, 121, 14, 7, 238, 120, 14, 7, 238, 119, 14, 7, 238, 118, 14, 7, 238,
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-    7, 238, 86, 14, 7, 238, 85, 14, 7, 238, 84, 14, 7, 238, 83, 14, 7, 238,
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-    73, 14, 7, 238, 72, 14, 7, 238, 71, 14, 7, 238, 70, 14, 7, 238, 69, 14,
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-    7, 238, 41, 14, 7, 238, 40, 14, 7, 238, 39, 14, 7, 238, 38, 14, 7, 238,
-    37, 14, 7, 238, 36, 14, 7, 238, 35, 14, 7, 235, 7, 14, 7, 235, 6, 14, 7,
-    235, 5, 14, 7, 235, 4, 14, 7, 235, 3, 14, 7, 235, 2, 14, 7, 235, 1, 14,
-    7, 235, 0, 14, 7, 234, 255, 14, 7, 234, 254, 14, 7, 234, 253, 14, 7, 234,
-    252, 14, 7, 234, 251, 14, 7, 234, 250, 14, 7, 234, 249, 14, 7, 234, 248,
-    14, 7, 234, 247, 14, 7, 234, 246, 14, 7, 234, 245, 14, 7, 234, 244, 14,
-    7, 234, 243, 14, 7, 234, 242, 14, 7, 234, 241, 14, 7, 234, 240, 14, 7,
-    234, 239, 14, 7, 234, 238, 14, 7, 234, 237, 14, 7, 234, 236, 14, 7, 234,
-    235, 14, 7, 234, 234, 14, 7, 234, 233, 14, 7, 234, 232, 14, 7, 234, 231,
-    14, 7, 234, 230, 14, 7, 234, 229, 14, 7, 234, 228, 14, 7, 234, 227, 14,
-    7, 234, 226, 14, 7, 234, 225, 14, 7, 234, 224, 14, 7, 234, 223, 14, 7,
-    234, 222, 14, 7, 234, 221, 14, 7, 234, 220, 14, 7, 233, 174, 14, 7, 233,
-    173, 14, 7, 233, 172, 14, 7, 233, 171, 14, 7, 233, 170, 14, 7, 233, 169,
-    14, 7, 233, 168, 14, 7, 233, 167, 14, 7, 233, 166, 14, 7, 233, 165, 14,
-    7, 233, 164, 14, 7, 233, 163, 14, 7, 233, 162, 14, 7, 233, 161, 14, 7,
-    233, 160, 14, 7, 233, 159, 14, 7, 233, 158, 14, 7, 233, 157, 14, 7, 233,
-    156, 14, 7, 233, 155, 14, 7, 233, 154, 14, 7, 233, 153, 14, 7, 233, 152,
-    14, 7, 233, 151, 14, 7, 233, 150, 14, 7, 233, 149, 14, 7, 233, 148, 14,
-    7, 233, 147, 14, 7, 233, 146, 14, 7, 233, 145, 14, 7, 233, 144, 14, 7,
-    233, 143, 14, 7, 233, 142, 14, 7, 233, 141, 14, 7, 233, 140, 14, 7, 233,
-    139, 14, 7, 233, 138, 14, 7, 233, 137, 14, 7, 233, 136, 14, 7, 233, 135,
-    14, 7, 233, 134, 14, 7, 233, 133, 14, 7, 233, 132, 14, 7, 233, 131, 14,
-    7, 233, 130, 14, 7, 233, 129, 14, 7, 233, 128, 14, 7, 233, 127, 14, 7,
-    233, 126, 14, 7, 233, 125, 14, 7, 233, 124, 14, 7, 233, 123, 14, 7, 233,
-    122, 14, 7, 233, 121, 14, 7, 233, 120, 14, 7, 233, 119, 14, 7, 233, 118,
-    14, 7, 233, 117, 14, 7, 233, 116, 14, 7, 233, 115, 14, 7, 233, 114, 14,
-    7, 233, 113, 14, 7, 233, 112, 14, 7, 233, 111, 14, 7, 233, 110, 14, 7,
-    232, 50, 14, 7, 232, 49, 14, 7, 232, 48, 14, 7, 232, 47, 14, 7, 232, 46,
-    14, 7, 232, 45, 14, 7, 232, 44, 14, 7, 232, 43, 14, 7, 232, 42, 14, 7,
-    232, 41, 14, 7, 232, 40, 14, 7, 232, 39, 14, 7, 232, 38, 14, 7, 232, 37,
-    14, 7, 232, 36, 14, 7, 232, 35, 14, 7, 232, 34, 14, 7, 232, 33, 14, 7,
-    232, 32, 14, 7, 232, 31, 14, 7, 232, 30, 14, 7, 232, 29, 14, 7, 232, 28,
-    14, 7, 232, 27, 14, 7, 232, 26, 14, 7, 232, 25, 14, 7, 232, 24, 14, 7,
-    232, 23, 14, 7, 232, 22, 14, 7, 232, 21, 14, 7, 232, 20, 14, 7, 232, 19,
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-    165, 199, 67, 40, 223, 126, 199, 67, 40, 237, 93, 199, 67, 40, 237, 219,
-    199, 67, 40, 236, 245, 199, 67, 40, 233, 213, 199, 67, 40, 203, 240, 199,
-    67, 40, 201, 60, 199, 67, 40, 230, 16, 199, 67, 40, 242, 66, 199, 67, 40,
-    242, 214, 199, 67, 40, 233, 88, 199, 67, 40, 251, 248, 199, 67, 40, 242,
-    65, 199, 67, 40, 211, 105, 199, 34, 195, 138, 199, 67, 40, 237, 15, 199,
-    67, 40, 220, 113, 199, 67, 40, 232, 131, 238, 244, 206, 145, 196, 91, 17,
-    107, 238, 244, 206, 145, 196, 91, 17, 109, 238, 244, 206, 145, 196, 91,
-    17, 138, 238, 244, 206, 145, 196, 91, 17, 134, 238, 244, 206, 145, 196,
-    91, 17, 149, 238, 244, 206, 145, 196, 91, 17, 169, 238, 244, 206, 145,
-    196, 91, 17, 175, 238, 244, 206, 145, 196, 91, 17, 171, 238, 244, 206,
-    145, 196, 91, 17, 178, 238, 244, 206, 145, 199, 91, 17, 107, 238, 244,
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-    244, 206, 145, 199, 91, 17, 134, 238, 244, 206, 145, 199, 91, 17, 149,
-    238, 244, 206, 145, 199, 91, 17, 169, 238, 244, 206, 145, 199, 91, 17,
-    175, 238, 244, 206, 145, 199, 91, 17, 171, 238, 244, 206, 145, 199, 91,
-    17, 178, 154, 199, 198, 87, 107, 154, 199, 198, 87, 109, 154, 199, 198,
-    87, 138, 154, 199, 198, 87, 134, 154, 199, 198, 87, 149, 199, 198, 87,
-    107, 199, 198, 87, 149, 13, 28, 6, 65, 13, 28, 6, 250, 120, 13, 28, 6,
-    247, 193, 13, 28, 6, 238, 127, 13, 28, 6, 71, 13, 28, 6, 233, 175, 13,
-    28, 6, 232, 51, 13, 28, 6, 230, 116, 13, 28, 6, 68, 13, 28, 6, 223, 35,
-    13, 28, 6, 222, 152, 13, 28, 6, 172, 13, 28, 6, 218, 168, 13, 28, 6, 215,
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-    146, 13, 28, 6, 206, 8, 13, 28, 6, 200, 43, 13, 28, 6, 66, 13, 28, 6,
-    196, 12, 13, 28, 6, 193, 224, 13, 28, 6, 192, 235, 13, 28, 6, 192, 159,
-    13, 28, 6, 191, 166, 13, 28, 2, 65, 13, 28, 2, 250, 120, 13, 28, 2, 247,
-    193, 13, 28, 2, 238, 127, 13, 28, 2, 71, 13, 28, 2, 233, 175, 13, 28, 2,
-    232, 51, 13, 28, 2, 230, 116, 13, 28, 2, 68, 13, 28, 2, 223, 35, 13, 28,
-    2, 222, 152, 13, 28, 2, 172, 13, 28, 2, 218, 168, 13, 28, 2, 215, 61, 13,
-    28, 2, 74, 13, 28, 2, 210, 236, 13, 28, 2, 208, 104, 13, 28, 2, 146, 13,
-    28, 2, 206, 8, 13, 28, 2, 200, 43, 13, 28, 2, 66, 13, 28, 2, 196, 12, 13,
-    28, 2, 193, 224, 13, 28, 2, 192, 235, 13, 28, 2, 192, 159, 13, 28, 2,
-    191, 166, 13, 43, 6, 65, 13, 43, 6, 250, 120, 13, 43, 6, 247, 193, 13,
-    43, 6, 238, 127, 13, 43, 6, 71, 13, 43, 6, 233, 175, 13, 43, 6, 232, 51,
-    13, 43, 6, 230, 116, 13, 43, 6, 68, 13, 43, 6, 223, 35, 13, 43, 6, 222,
-    152, 13, 43, 6, 172, 13, 43, 6, 218, 168, 13, 43, 6, 215, 61, 13, 43, 6,
-    74, 13, 43, 6, 210, 236, 13, 43, 6, 208, 104, 13, 43, 6, 146, 13, 43, 6,
-    206, 8, 13, 43, 6, 200, 43, 13, 43, 6, 66, 13, 43, 6, 196, 12, 13, 43, 6,
-    193, 224, 13, 43, 6, 192, 235, 13, 43, 6, 192, 159, 13, 43, 6, 191, 166,
-    13, 43, 2, 65, 13, 43, 2, 250, 120, 13, 43, 2, 247, 193, 13, 43, 2, 238,
-    127, 13, 43, 2, 71, 13, 43, 2, 233, 175, 13, 43, 2, 232, 51, 13, 43, 2,
-    68, 13, 43, 2, 223, 35, 13, 43, 2, 222, 152, 13, 43, 2, 172, 13, 43, 2,
-    218, 168, 13, 43, 2, 215, 61, 13, 43, 2, 74, 13, 43, 2, 210, 236, 13, 43,
-    2, 208, 104, 13, 43, 2, 146, 13, 43, 2, 206, 8, 13, 43, 2, 200, 43, 13,
-    43, 2, 66, 13, 43, 2, 196, 12, 13, 43, 2, 193, 224, 13, 43, 2, 192, 235,
-    13, 43, 2, 192, 159, 13, 43, 2, 191, 166, 13, 28, 43, 6, 65, 13, 28, 43,
-    6, 250, 120, 13, 28, 43, 6, 247, 193, 13, 28, 43, 6, 238, 127, 13, 28,
-    43, 6, 71, 13, 28, 43, 6, 233, 175, 13, 28, 43, 6, 232, 51, 13, 28, 43,
-    6, 230, 116, 13, 28, 43, 6, 68, 13, 28, 43, 6, 223, 35, 13, 28, 43, 6,
-    222, 152, 13, 28, 43, 6, 172, 13, 28, 43, 6, 218, 168, 13, 28, 43, 6,
-    215, 61, 13, 28, 43, 6, 74, 13, 28, 43, 6, 210, 236, 13, 28, 43, 6, 208,
-    104, 13, 28, 43, 6, 146, 13, 28, 43, 6, 206, 8, 13, 28, 43, 6, 200, 43,
-    13, 28, 43, 6, 66, 13, 28, 43, 6, 196, 12, 13, 28, 43, 6, 193, 224, 13,
-    28, 43, 6, 192, 235, 13, 28, 43, 6, 192, 159, 13, 28, 43, 6, 191, 166,
-    13, 28, 43, 2, 65, 13, 28, 43, 2, 250, 120, 13, 28, 43, 2, 247, 193, 13,
-    28, 43, 2, 238, 127, 13, 28, 43, 2, 71, 13, 28, 43, 2, 233, 175, 13, 28,
-    43, 2, 232, 51, 13, 28, 43, 2, 230, 116, 13, 28, 43, 2, 68, 13, 28, 43,
-    2, 223, 35, 13, 28, 43, 2, 222, 152, 13, 28, 43, 2, 172, 13, 28, 43, 2,
-    218, 168, 13, 28, 43, 2, 215, 61, 13, 28, 43, 2, 74, 13, 28, 43, 2, 210,
-    236, 13, 28, 43, 2, 208, 104, 13, 28, 43, 2, 146, 13, 28, 43, 2, 206, 8,
-    13, 28, 43, 2, 200, 43, 13, 28, 43, 2, 66, 13, 28, 43, 2, 196, 12, 13,
-    28, 43, 2, 193, 224, 13, 28, 43, 2, 192, 235, 13, 28, 43, 2, 192, 159,
-    13, 28, 43, 2, 191, 166, 13, 27, 6, 65, 13, 27, 6, 247, 193, 13, 27, 6,
-    238, 127, 13, 27, 6, 232, 51, 13, 27, 6, 223, 35, 13, 27, 6, 222, 152,
-    13, 27, 6, 215, 61, 13, 27, 6, 74, 13, 27, 6, 210, 236, 13, 27, 6, 208,
-    104, 13, 27, 6, 206, 8, 13, 27, 6, 200, 43, 13, 27, 6, 66, 13, 27, 6,
-    196, 12, 13, 27, 6, 193, 224, 13, 27, 6, 192, 235, 13, 27, 6, 192, 159,
-    13, 27, 6, 191, 166, 13, 27, 2, 65, 13, 27, 2, 250, 120, 13, 27, 2, 247,
-    193, 13, 27, 2, 238, 127, 13, 27, 2, 233, 175, 13, 27, 2, 230, 116, 13,
-    27, 2, 68, 13, 27, 2, 223, 35, 13, 27, 2, 222, 152, 13, 27, 2, 172, 13,
-    27, 2, 218, 168, 13, 27, 2, 215, 61, 13, 27, 2, 210, 236, 13, 27, 2, 208,
-    104, 13, 27, 2, 146, 13, 27, 2, 206, 8, 13, 27, 2, 200, 43, 13, 27, 2,
-    66, 13, 27, 2, 196, 12, 13, 27, 2, 193, 224, 13, 27, 2, 192, 235, 13, 27,
-    2, 192, 159, 13, 27, 2, 191, 166, 13, 28, 27, 6, 65, 13, 28, 27, 6, 250,
-    120, 13, 28, 27, 6, 247, 193, 13, 28, 27, 6, 238, 127, 13, 28, 27, 6, 71,
-    13, 28, 27, 6, 233, 175, 13, 28, 27, 6, 232, 51, 13, 28, 27, 6, 230, 116,
-    13, 28, 27, 6, 68, 13, 28, 27, 6, 223, 35, 13, 28, 27, 6, 222, 152, 13,
-    28, 27, 6, 172, 13, 28, 27, 6, 218, 168, 13, 28, 27, 6, 215, 61, 13, 28,
-    27, 6, 74, 13, 28, 27, 6, 210, 236, 13, 28, 27, 6, 208, 104, 13, 28, 27,
-    6, 146, 13, 28, 27, 6, 206, 8, 13, 28, 27, 6, 200, 43, 13, 28, 27, 6, 66,
-    13, 28, 27, 6, 196, 12, 13, 28, 27, 6, 193, 224, 13, 28, 27, 6, 192, 235,
-    13, 28, 27, 6, 192, 159, 13, 28, 27, 6, 191, 166, 13, 28, 27, 2, 65, 13,
-    28, 27, 2, 250, 120, 13, 28, 27, 2, 247, 193, 13, 28, 27, 2, 238, 127,
-    13, 28, 27, 2, 71, 13, 28, 27, 2, 233, 175, 13, 28, 27, 2, 232, 51, 13,
-    28, 27, 2, 230, 116, 13, 28, 27, 2, 68, 13, 28, 27, 2, 223, 35, 13, 28,
-    27, 2, 222, 152, 13, 28, 27, 2, 172, 13, 28, 27, 2, 218, 168, 13, 28, 27,
-    2, 215, 61, 13, 28, 27, 2, 74, 13, 28, 27, 2, 210, 236, 13, 28, 27, 2,
-    208, 104, 13, 28, 27, 2, 146, 13, 28, 27, 2, 206, 8, 13, 28, 27, 2, 200,
-    43, 13, 28, 27, 2, 66, 13, 28, 27, 2, 196, 12, 13, 28, 27, 2, 193, 224,
-    13, 28, 27, 2, 192, 235, 13, 28, 27, 2, 192, 159, 13, 28, 27, 2, 191,
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-    238, 127, 13, 232, 115, 6, 71, 13, 232, 115, 6, 233, 175, 13, 232, 115,
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-    115, 6, 172, 13, 232, 115, 6, 218, 168, 13, 232, 115, 6, 215, 61, 13,
-    232, 115, 6, 74, 13, 232, 115, 6, 210, 236, 13, 232, 115, 6, 208, 104,
-    13, 232, 115, 6, 206, 8, 13, 232, 115, 6, 200, 43, 13, 232, 115, 6, 66,
-    13, 232, 115, 6, 196, 12, 13, 232, 115, 6, 193, 224, 13, 232, 115, 6,
-    192, 235, 13, 232, 115, 6, 192, 159, 13, 232, 115, 2, 65, 13, 232, 115,
-    2, 250, 120, 13, 232, 115, 2, 247, 193, 13, 232, 115, 2, 238, 127, 13,
-    232, 115, 2, 71, 13, 232, 115, 2, 233, 175, 13, 232, 115, 2, 232, 51, 13,
-    232, 115, 2, 230, 116, 13, 232, 115, 2, 68, 13, 232, 115, 2, 223, 35, 13,
-    232, 115, 2, 222, 152, 13, 232, 115, 2, 172, 13, 232, 115, 2, 218, 168,
-    13, 232, 115, 2, 215, 61, 13, 232, 115, 2, 74, 13, 232, 115, 2, 210, 236,
-    13, 232, 115, 2, 208, 104, 13, 232, 115, 2, 146, 13, 232, 115, 2, 206, 8,
-    13, 232, 115, 2, 200, 43, 13, 232, 115, 2, 66, 13, 232, 115, 2, 196, 12,
-    13, 232, 115, 2, 193, 224, 13, 232, 115, 2, 192, 235, 13, 232, 115, 2,
-    192, 159, 13, 232, 115, 2, 191, 166, 13, 235, 129, 6, 65, 13, 235, 129,
-    6, 250, 120, 13, 235, 129, 6, 238, 127, 13, 235, 129, 6, 71, 13, 235,
-    129, 6, 233, 175, 13, 235, 129, 6, 232, 51, 13, 235, 129, 6, 68, 13, 235,
-    129, 6, 223, 35, 13, 235, 129, 6, 222, 152, 13, 235, 129, 6, 172, 13,
-    235, 129, 6, 218, 168, 13, 235, 129, 6, 74, 13, 235, 129, 6, 206, 8, 13,
-    235, 129, 6, 200, 43, 13, 235, 129, 6, 66, 13, 235, 129, 6, 196, 12, 13,
-    235, 129, 6, 193, 224, 13, 235, 129, 6, 192, 235, 13, 235, 129, 6, 192,
-    159, 13, 235, 129, 2, 65, 13, 235, 129, 2, 250, 120, 13, 235, 129, 2,
-    247, 193, 13, 235, 129, 2, 238, 127, 13, 235, 129, 2, 71, 13, 235, 129,
-    2, 233, 175, 13, 235, 129, 2, 232, 51, 13, 235, 129, 2, 230, 116, 13,
-    235, 129, 2, 68, 13, 235, 129, 2, 223, 35, 13, 235, 129, 2, 222, 152, 13,
-    235, 129, 2, 172, 13, 235, 129, 2, 218, 168, 13, 235, 129, 2, 215, 61,
-    13, 235, 129, 2, 74, 13, 235, 129, 2, 210, 236, 13, 235, 129, 2, 208,
-    104, 13, 235, 129, 2, 146, 13, 235, 129, 2, 206, 8, 13, 235, 129, 2, 200,
-    43, 13, 235, 129, 2, 66, 13, 235, 129, 2, 196, 12, 13, 235, 129, 2, 193,
-    224, 13, 235, 129, 2, 192, 235, 13, 235, 129, 2, 192, 159, 13, 235, 129,
-    2, 191, 166, 13, 28, 232, 115, 6, 65, 13, 28, 232, 115, 6, 250, 120, 13,
-    28, 232, 115, 6, 247, 193, 13, 28, 232, 115, 6, 238, 127, 13, 28, 232,
-    115, 6, 71, 13, 28, 232, 115, 6, 233, 175, 13, 28, 232, 115, 6, 232, 51,
-    13, 28, 232, 115, 6, 230, 116, 13, 28, 232, 115, 6, 68, 13, 28, 232, 115,
-    6, 223, 35, 13, 28, 232, 115, 6, 222, 152, 13, 28, 232, 115, 6, 172, 13,
-    28, 232, 115, 6, 218, 168, 13, 28, 232, 115, 6, 215, 61, 13, 28, 232,
-    115, 6, 74, 13, 28, 232, 115, 6, 210, 236, 13, 28, 232, 115, 6, 208, 104,
-    13, 28, 232, 115, 6, 146, 13, 28, 232, 115, 6, 206, 8, 13, 28, 232, 115,
-    6, 200, 43, 13, 28, 232, 115, 6, 66, 13, 28, 232, 115, 6, 196, 12, 13,
-    28, 232, 115, 6, 193, 224, 13, 28, 232, 115, 6, 192, 235, 13, 28, 232,
-    115, 6, 192, 159, 13, 28, 232, 115, 6, 191, 166, 13, 28, 232, 115, 2, 65,
-    13, 28, 232, 115, 2, 250, 120, 13, 28, 232, 115, 2, 247, 193, 13, 28,
-    232, 115, 2, 238, 127, 13, 28, 232, 115, 2, 71, 13, 28, 232, 115, 2, 233,
-    175, 13, 28, 232, 115, 2, 232, 51, 13, 28, 232, 115, 2, 230, 116, 13, 28,
-    232, 115, 2, 68, 13, 28, 232, 115, 2, 223, 35, 13, 28, 232, 115, 2, 222,
-    152, 13, 28, 232, 115, 2, 172, 13, 28, 232, 115, 2, 218, 168, 13, 28,
-    232, 115, 2, 215, 61, 13, 28, 232, 115, 2, 74, 13, 28, 232, 115, 2, 210,
-    236, 13, 28, 232, 115, 2, 208, 104, 13, 28, 232, 115, 2, 146, 13, 28,
-    232, 115, 2, 206, 8, 13, 28, 232, 115, 2, 200, 43, 13, 28, 232, 115, 2,
-    66, 13, 28, 232, 115, 2, 196, 12, 13, 28, 232, 115, 2, 193, 224, 13, 28,
-    232, 115, 2, 192, 235, 13, 28, 232, 115, 2, 192, 159, 13, 28, 232, 115,
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-    49, 6, 238, 127, 13, 49, 6, 71, 13, 49, 6, 233, 175, 13, 49, 6, 232, 51,
-    13, 49, 6, 230, 116, 13, 49, 6, 68, 13, 49, 6, 223, 35, 13, 49, 6, 222,
-    152, 13, 49, 6, 172, 13, 49, 6, 218, 168, 13, 49, 6, 215, 61, 13, 49, 6,
-    74, 13, 49, 6, 210, 236, 13, 49, 6, 208, 104, 13, 49, 6, 146, 13, 49, 6,
-    206, 8, 13, 49, 6, 200, 43, 13, 49, 6, 66, 13, 49, 6, 196, 12, 13, 49, 6,
-    193, 224, 13, 49, 6, 192, 235, 13, 49, 6, 192, 159, 13, 49, 6, 191, 166,
-    13, 49, 2, 65, 13, 49, 2, 250, 120, 13, 49, 2, 247, 193, 13, 49, 2, 238,
-    127, 13, 49, 2, 71, 13, 49, 2, 233, 175, 13, 49, 2, 232, 51, 13, 49, 2,
-    230, 116, 13, 49, 2, 68, 13, 49, 2, 223, 35, 13, 49, 2, 222, 152, 13, 49,
-    2, 172, 13, 49, 2, 218, 168, 13, 49, 2, 215, 61, 13, 49, 2, 74, 13, 49,
-    2, 210, 236, 13, 49, 2, 208, 104, 13, 49, 2, 146, 13, 49, 2, 206, 8, 13,
-    49, 2, 200, 43, 13, 49, 2, 66, 13, 49, 2, 196, 12, 13, 49, 2, 193, 224,
-    13, 49, 2, 192, 235, 13, 49, 2, 192, 159, 13, 49, 2, 191, 166, 13, 49,
-    28, 6, 65, 13, 49, 28, 6, 250, 120, 13, 49, 28, 6, 247, 193, 13, 49, 28,
-    6, 238, 127, 13, 49, 28, 6, 71, 13, 49, 28, 6, 233, 175, 13, 49, 28, 6,
-    232, 51, 13, 49, 28, 6, 230, 116, 13, 49, 28, 6, 68, 13, 49, 28, 6, 223,
-    35, 13, 49, 28, 6, 222, 152, 13, 49, 28, 6, 172, 13, 49, 28, 6, 218, 168,
-    13, 49, 28, 6, 215, 61, 13, 49, 28, 6, 74, 13, 49, 28, 6, 210, 236, 13,
-    49, 28, 6, 208, 104, 13, 49, 28, 6, 146, 13, 49, 28, 6, 206, 8, 13, 49,
-    28, 6, 200, 43, 13, 49, 28, 6, 66, 13, 49, 28, 6, 196, 12, 13, 49, 28, 6,
-    193, 224, 13, 49, 28, 6, 192, 235, 13, 49, 28, 6, 192, 159, 13, 49, 28,
-    6, 191, 166, 13, 49, 28, 2, 65, 13, 49, 28, 2, 250, 120, 13, 49, 28, 2,
-    247, 193, 13, 49, 28, 2, 238, 127, 13, 49, 28, 2, 71, 13, 49, 28, 2, 233,
-    175, 13, 49, 28, 2, 232, 51, 13, 49, 28, 2, 230, 116, 13, 49, 28, 2, 68,
-    13, 49, 28, 2, 223, 35, 13, 49, 28, 2, 222, 152, 13, 49, 28, 2, 172, 13,
-    49, 28, 2, 218, 168, 13, 49, 28, 2, 215, 61, 13, 49, 28, 2, 74, 13, 49,
-    28, 2, 210, 236, 13, 49, 28, 2, 208, 104, 13, 49, 28, 2, 146, 13, 49, 28,
-    2, 206, 8, 13, 49, 28, 2, 200, 43, 13, 49, 28, 2, 66, 13, 49, 28, 2, 196,
-    12, 13, 49, 28, 2, 193, 224, 13, 49, 28, 2, 192, 235, 13, 49, 28, 2, 192,
-    159, 13, 49, 28, 2, 191, 166, 13, 49, 43, 6, 65, 13, 49, 43, 6, 250, 120,
-    13, 49, 43, 6, 247, 193, 13, 49, 43, 6, 238, 127, 13, 49, 43, 6, 71, 13,
-    49, 43, 6, 233, 175, 13, 49, 43, 6, 232, 51, 13, 49, 43, 6, 230, 116, 13,
-    49, 43, 6, 68, 13, 49, 43, 6, 223, 35, 13, 49, 43, 6, 222, 152, 13, 49,
-    43, 6, 172, 13, 49, 43, 6, 218, 168, 13, 49, 43, 6, 215, 61, 13, 49, 43,
-    6, 74, 13, 49, 43, 6, 210, 236, 13, 49, 43, 6, 208, 104, 13, 49, 43, 6,
-    146, 13, 49, 43, 6, 206, 8, 13, 49, 43, 6, 200, 43, 13, 49, 43, 6, 66,
-    13, 49, 43, 6, 196, 12, 13, 49, 43, 6, 193, 224, 13, 49, 43, 6, 192, 235,
-    13, 49, 43, 6, 192, 159, 13, 49, 43, 6, 191, 166, 13, 49, 43, 2, 65, 13,
-    49, 43, 2, 250, 120, 13, 49, 43, 2, 247, 193, 13, 49, 43, 2, 238, 127,
-    13, 49, 43, 2, 71, 13, 49, 43, 2, 233, 175, 13, 49, 43, 2, 232, 51, 13,
-    49, 43, 2, 230, 116, 13, 49, 43, 2, 68, 13, 49, 43, 2, 223, 35, 13, 49,
-    43, 2, 222, 152, 13, 49, 43, 2, 172, 13, 49, 43, 2, 218, 168, 13, 49, 43,
-    2, 215, 61, 13, 49, 43, 2, 74, 13, 49, 43, 2, 210, 236, 13, 49, 43, 2,
-    208, 104, 13, 49, 43, 2, 146, 13, 49, 43, 2, 206, 8, 13, 49, 43, 2, 200,
-    43, 13, 49, 43, 2, 66, 13, 49, 43, 2, 196, 12, 13, 49, 43, 2, 193, 224,
-    13, 49, 43, 2, 192, 235, 13, 49, 43, 2, 192, 159, 13, 49, 43, 2, 191,
-    166, 13, 49, 28, 43, 6, 65, 13, 49, 28, 43, 6, 250, 120, 13, 49, 28, 43,
-    6, 247, 193, 13, 49, 28, 43, 6, 238, 127, 13, 49, 28, 43, 6, 71, 13, 49,
-    28, 43, 6, 233, 175, 13, 49, 28, 43, 6, 232, 51, 13, 49, 28, 43, 6, 230,
-    116, 13, 49, 28, 43, 6, 68, 13, 49, 28, 43, 6, 223, 35, 13, 49, 28, 43,
-    6, 222, 152, 13, 49, 28, 43, 6, 172, 13, 49, 28, 43, 6, 218, 168, 13, 49,
-    28, 43, 6, 215, 61, 13, 49, 28, 43, 6, 74, 13, 49, 28, 43, 6, 210, 236,
-    13, 49, 28, 43, 6, 208, 104, 13, 49, 28, 43, 6, 146, 13, 49, 28, 43, 6,
-    206, 8, 13, 49, 28, 43, 6, 200, 43, 13, 49, 28, 43, 6, 66, 13, 49, 28,
-    43, 6, 196, 12, 13, 49, 28, 43, 6, 193, 224, 13, 49, 28, 43, 6, 192, 235,
-    13, 49, 28, 43, 6, 192, 159, 13, 49, 28, 43, 6, 191, 166, 13, 49, 28, 43,
-    2, 65, 13, 49, 28, 43, 2, 250, 120, 13, 49, 28, 43, 2, 247, 193, 13, 49,
-    28, 43, 2, 238, 127, 13, 49, 28, 43, 2, 71, 13, 49, 28, 43, 2, 233, 175,
-    13, 49, 28, 43, 2, 232, 51, 13, 49, 28, 43, 2, 230, 116, 13, 49, 28, 43,
-    2, 68, 13, 49, 28, 43, 2, 223, 35, 13, 49, 28, 43, 2, 222, 152, 13, 49,
-    28, 43, 2, 172, 13, 49, 28, 43, 2, 218, 168, 13, 49, 28, 43, 2, 215, 61,
-    13, 49, 28, 43, 2, 74, 13, 49, 28, 43, 2, 210, 236, 13, 49, 28, 43, 2,
-    208, 104, 13, 49, 28, 43, 2, 146, 13, 49, 28, 43, 2, 206, 8, 13, 49, 28,
-    43, 2, 200, 43, 13, 49, 28, 43, 2, 66, 13, 49, 28, 43, 2, 196, 12, 13,
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-    192, 159, 13, 49, 28, 43, 2, 191, 166, 13, 215, 217, 6, 65, 13, 215, 217,
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-    230, 41, 232, 226, 232, 248, 201, 199, 248, 223, 24, 230, 41, 229, 213,
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-    202, 207, 24, 230, 41, 229, 213, 176, 202, 207, 24, 230, 41, 176, 248,
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-    202, 207, 24, 230, 41, 201, 210, 247, 22, 176, 202, 208, 248, 223, 24,
-    230, 41, 201, 210, 219, 82, 24, 230, 47, 24, 230, 48, 176, 202, 207, 24,
-    230, 48, 213, 44, 198, 212, 24, 230, 48, 176, 232, 132, 24, 230, 37, 238,
-    173, 24, 230, 36, 24, 230, 46, 211, 76, 24, 230, 45, 24, 230, 46, 211,
-    77, 176, 202, 207, 24, 230, 46, 176, 202, 207, 24, 230, 46, 211, 77, 213,
-    44, 198, 212, 24, 230, 46, 213, 44, 198, 212, 24, 230, 46, 211, 77, 176,
-    232, 132, 24, 230, 46, 176, 232, 132, 24, 230, 44, 211, 76, 24, 230, 43,
-    24, 230, 49, 24, 230, 34, 24, 230, 35, 176, 202, 207, 24, 230, 35, 213,
-    44, 198, 212, 24, 230, 35, 176, 232, 132, 24, 230, 39, 211, 76, 24, 230,
-    39, 211, 77, 176, 232, 132, 24, 230, 38, 24, 230, 39, 202, 70, 24, 230,
-    39, 211, 77, 176, 202, 207, 24, 230, 39, 176, 202, 207, 24, 230, 39, 211,
-    77, 213, 44, 198, 212, 24, 230, 39, 213, 44, 198, 212, 24, 230, 39, 176,
-    202, 208, 198, 35, 223, 148, 24, 230, 39, 176, 248, 210, 82, 206, 188,
-    24, 230, 51, 24, 151, 141, 82, 206, 188, 24, 230, 50, 141, 82, 206, 188,
-    24, 230, 39, 141, 82, 206, 188, 24, 230, 52, 141, 82, 206, 188, 24, 230,
-    39, 219, 82, 24, 151, 141, 82, 206, 189, 248, 223, 24, 151, 141, 82, 206,
-    189, 239, 46, 24, 230, 39, 141, 82, 206, 189, 239, 46, 24, 151, 219, 83,
-    235, 123, 24, 151, 219, 83, 144, 206, 183, 201, 52, 24, 151, 219, 83,
-    144, 206, 183, 238, 162, 24, 151, 219, 83, 144, 211, 26, 243, 9, 24, 151,
-    219, 83, 196, 77, 24, 151, 176, 196, 105, 219, 83, 196, 77, 24, 230, 50,
-    219, 83, 196, 77, 24, 230, 35, 219, 83, 196, 77, 24, 230, 52, 219, 83,
-    196, 77, 24, 151, 219, 83, 207, 147, 221, 70, 24, 151, 219, 83, 248, 223,
-    24, 151, 219, 83, 198, 36, 198, 212, 24, 151, 219, 83, 198, 212, 24, 230,
-    39, 219, 83, 198, 212, 24, 151, 219, 83, 141, 198, 212, 24, 230, 39, 219,
-    83, 141, 198, 212, 24, 230, 52, 219, 83, 141, 176, 141, 176, 211, 14, 24,
-    230, 52, 219, 83, 141, 176, 141, 198, 212, 24, 151, 219, 83, 223, 148,
-    24, 230, 50, 219, 83, 223, 148, 24, 230, 39, 219, 83, 223, 148, 24, 230,
-    52, 219, 83, 223, 148, 24, 151, 141, 82, 219, 82, 24, 230, 50, 141, 82,
-    219, 82, 24, 230, 39, 141, 82, 219, 82, 24, 230, 39, 206, 188, 24, 230,
-    52, 141, 82, 219, 82, 24, 151, 141, 82, 238, 218, 219, 82, 24, 230, 50,
-    141, 82, 238, 218, 219, 82, 24, 151, 206, 189, 235, 123, 24, 230, 39,
-    206, 189, 144, 141, 176, 228, 251, 216, 84, 24, 230, 52, 206, 189, 144,
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-    219, 37, 201, 247, 24, 219, 38, 201, 247, 24, 219, 40, 229, 208, 24, 219,
-    40, 193, 74, 24, 219, 40, 237, 92, 24, 219, 40, 229, 236, 214, 112, 24,
-    219, 40, 198, 45, 24, 219, 40, 219, 123, 237, 9, 24, 242, 74, 24, 232,
-    80, 201, 63, 24, 204, 25, 24, 242, 83, 24, 210, 113, 24, 233, 6, 215,
-    244, 24, 233, 6, 215, 243, 24, 233, 6, 215, 242, 24, 233, 6, 215, 241,
-    24, 233, 6, 215, 240, 24, 206, 121, 215, 244, 24, 206, 121, 215, 243, 24,
-    206, 121, 215, 242, 24, 206, 121, 215, 241, 24, 206, 121, 215, 240, 24,
-    206, 121, 215, 239, 24, 206, 121, 215, 238, 24, 206, 121, 215, 237, 24,
-    206, 121, 215, 251, 24, 206, 121, 215, 250, 24, 206, 121, 215, 249, 24,
-    206, 121, 215, 248, 24, 206, 121, 215, 247, 24, 206, 121, 215, 246, 24,
-    206, 121, 215, 245, 8, 2, 1, 233, 37, 237, 3, 4, 197, 228, 8, 2, 1, 207,
-    18, 27, 232, 51, 8, 1, 2, 6, 153, 232, 51, 8, 2, 1, 207, 18, 222, 152, 8,
-    1, 2, 6, 220, 143, 4, 248, 231, 8, 2, 1, 219, 163, 4, 207, 24, 102, 8, 2,
-    1, 153, 192, 160, 4, 248, 231, 8, 2, 1, 207, 18, 234, 88, 8, 2, 1, 153,
-    207, 222, 4, 179, 219, 213, 23, 207, 24, 102, 8, 2, 1, 200, 44, 4, 228,
-    251, 23, 207, 24, 102, 8, 1, 207, 24, 242, 232, 4, 207, 24, 102, 8, 2, 1,
-    234, 13, 4, 55, 164, 8, 2, 1, 234, 13, 4, 55, 249, 88, 23, 238, 175, 8,
-    2, 1, 153, 200, 44, 4, 238, 175, 8, 1, 223, 93, 231, 11, 201, 64, 4, 238,
-    175, 8, 1, 201, 36, 247, 194, 4, 238, 175, 8, 1, 2, 6, 153, 222, 152, 8,
-    2, 1, 220, 143, 4, 232, 233, 8, 2, 1, 237, 70, 237, 3, 4, 210, 192, 102,
-    8, 2, 1, 220, 143, 4, 248, 232, 23, 210, 192, 102, 8, 2, 1, 234, 89, 4,
-    210, 192, 102, 8, 2, 1, 153, 207, 222, 4, 210, 192, 102, 8, 2, 1, 207,
-    222, 4, 232, 234, 23, 210, 192, 102, 8, 2, 1, 199, 79, 237, 3, 4, 210,
-    192, 102, 8, 2, 1, 233, 179, 4, 210, 192, 102, 8, 2, 1, 237, 70, 237, 3,
-    4, 207, 24, 102, 8, 2, 1, 228, 74, 4, 201, 28, 23, 207, 24, 102, 8, 2, 1,
-    187, 4, 207, 24, 102, 8, 2, 1, 199, 79, 237, 3, 4, 207, 24, 102, 8, 2, 1,
-    247, 194, 4, 207, 24, 102, 8, 2, 1, 206, 9, 4, 238, 175, 8, 2, 1, 238,
-    128, 4, 216, 86, 45, 102, 8, 2, 1, 220, 143, 4, 216, 86, 45, 102, 8, 2,
-    1, 215, 62, 4, 216, 86, 45, 102, 8, 2, 1, 207, 222, 4, 216, 86, 45, 102,
-    8, 2, 1, 206, 9, 4, 216, 86, 45, 102, 8, 2, 1, 200, 44, 4, 216, 86, 45,
-    102, 33, 135, 1, 250, 122, 33, 135, 1, 247, 252, 33, 135, 1, 195, 151,
-    33, 135, 1, 231, 18, 33, 135, 1, 236, 169, 33, 135, 1, 192, 49, 33, 135,
-    1, 191, 55, 33, 135, 1, 191, 82, 33, 135, 1, 223, 39, 33, 135, 1, 89,
-    223, 39, 33, 135, 1, 68, 33, 135, 1, 236, 190, 33, 135, 1, 222, 94, 33,
-    135, 1, 219, 75, 33, 135, 1, 215, 66, 33, 135, 1, 214, 210, 33, 135, 1,
-    211, 89, 33, 135, 1, 209, 55, 33, 135, 1, 206, 179, 33, 135, 1, 202, 77,
-    33, 135, 1, 197, 44, 33, 135, 1, 196, 124, 33, 135, 1, 232, 101, 33, 135,
-    1, 229, 188, 33, 135, 1, 203, 8, 33, 135, 1, 197, 146, 33, 135, 1, 243,
-    54, 33, 135, 1, 203, 165, 33, 135, 1, 192, 58, 33, 135, 1, 192, 60, 33,
-    135, 1, 192, 93, 33, 135, 1, 191, 225, 33, 135, 1, 2, 191, 190, 33, 135,
-    1, 192, 12, 33, 135, 1, 223, 82, 2, 191, 190, 33, 135, 1, 248, 175, 191,
-    190, 33, 135, 1, 223, 82, 248, 175, 191, 190, 33, 135, 1, 232, 228, 52,
-    1, 38, 2, 65, 52, 1, 38, 2, 249, 17, 52, 1, 38, 2, 195, 153, 52, 1, 38,
-    2, 231, 77, 52, 1, 38, 2, 237, 146, 52, 1, 38, 2, 223, 226, 52, 1, 38, 2,
-    191, 62, 52, 1, 38, 2, 191, 87, 52, 1, 38, 2, 68, 52, 1, 38, 2, 155, 52,
-    1, 38, 2, 234, 140, 52, 1, 38, 2, 234, 114, 52, 1, 38, 2, 74, 52, 1, 38,
-    2, 210, 63, 52, 1, 38, 2, 234, 34, 52, 1, 38, 2, 234, 22, 52, 1, 38, 2,
-    199, 145, 52, 1, 38, 2, 66, 52, 1, 38, 2, 234, 181, 52, 1, 38, 2, 140,
-    52, 1, 38, 2, 197, 161, 52, 1, 38, 2, 243, 127, 52, 1, 38, 2, 203, 165,
-    52, 1, 38, 2, 192, 58, 52, 1, 38, 2, 71, 52, 1, 38, 2, 191, 225, 52, 1,
-    38, 2, 235, 17, 52, 1, 38, 2, 205, 86, 52, 1, 38, 2, 247, 203, 68, 52, 1,
-    38, 2, 223, 10, 52, 1, 38, 2, 249, 82, 74, 52, 1, 38, 2, 201, 53, 66, 52,
-    1, 38, 2, 210, 179, 38, 200, 230, 2, 1, 65, 38, 200, 230, 2, 1, 249, 17,
-    38, 200, 230, 2, 1, 195, 153, 38, 200, 230, 2, 1, 231, 77, 38, 200, 230,
-    2, 1, 237, 146, 38, 200, 230, 2, 1, 223, 226, 38, 200, 230, 2, 1, 191,
-    62, 38, 200, 230, 2, 1, 191, 87, 38, 200, 230, 2, 1, 68, 38, 200, 230, 2,
-    1, 155, 38, 200, 230, 2, 1, 234, 140, 38, 200, 230, 2, 1, 74, 38, 200,
-    230, 2, 1, 210, 63, 38, 200, 230, 2, 1, 234, 22, 38, 200, 230, 2, 1, 66,
-    38, 200, 230, 2, 1, 234, 181, 38, 200, 230, 2, 1, 140, 38, 200, 230, 2,
-    1, 197, 161, 38, 200, 230, 2, 1, 243, 127, 38, 200, 230, 2, 1, 203, 165,
-    38, 200, 230, 2, 1, 230, 17, 56, 38, 200, 230, 2, 1, 192, 58, 38, 200,
-    230, 2, 1, 231, 78, 4, 196, 69, 38, 200, 230, 2, 1, 247, 203, 68, 38,
-    200, 230, 2, 1, 235, 32, 38, 200, 230, 2, 1, 235, 28, 52, 1, 38, 2, 234,
-    23, 4, 237, 87, 52, 1, 38, 2, 192, 59, 4, 249, 147, 192, 62, 52, 1, 38,
-    2, 201, 53, 126, 4, 106, 33, 38, 2, 1, 247, 203, 68, 212, 80, 208, 162,
-    90, 1, 174, 212, 80, 208, 162, 90, 1, 197, 168, 212, 80, 208, 162, 90, 1,
-    212, 199, 212, 80, 208, 162, 90, 1, 190, 190, 212, 80, 208, 162, 90, 1,
-    140, 212, 80, 208, 162, 90, 1, 180, 212, 80, 208, 162, 90, 1, 192, 220,
-    212, 80, 208, 162, 90, 1, 213, 111, 212, 80, 208, 162, 90, 1, 247, 160,
-    212, 80, 208, 162, 90, 1, 173, 212, 80, 208, 162, 90, 1, 188, 212, 80,
-    208, 162, 90, 1, 191, 123, 212, 80, 208, 162, 90, 1, 214, 166, 212, 80,
-    208, 162, 90, 1, 212, 186, 212, 80, 208, 162, 90, 1, 155, 212, 80, 208,
-    162, 90, 1, 238, 32, 212, 80, 208, 162, 90, 1, 212, 101, 212, 80, 208,
-    162, 90, 1, 212, 244, 212, 80, 208, 162, 90, 1, 195, 188, 212, 80, 208,
-    162, 90, 1, 212, 180, 212, 80, 208, 162, 90, 1, 197, 8, 212, 80, 208,
-    162, 90, 1, 233, 109, 212, 80, 208, 162, 90, 1, 165, 212, 80, 208, 162,
-    90, 1, 208, 96, 212, 80, 208, 162, 90, 1, 170, 212, 80, 208, 162, 90, 1,
-    212, 246, 212, 80, 208, 162, 90, 1, 168, 212, 80, 208, 162, 90, 1, 192,
-    175, 212, 80, 208, 162, 90, 1, 212, 248, 212, 80, 208, 162, 90, 1, 236,
-    186, 212, 80, 208, 162, 90, 1, 212, 247, 212, 80, 208, 162, 90, 1, 230,
-    81, 212, 80, 208, 162, 90, 1, 216, 19, 212, 80, 208, 162, 90, 1, 209,
-    110, 212, 80, 208, 162, 90, 1, 231, 240, 212, 80, 208, 162, 90, 1, 206,
-    109, 212, 80, 208, 162, 90, 1, 65, 212, 80, 208, 162, 90, 1, 252, 206,
-    212, 80, 208, 162, 90, 1, 68, 212, 80, 208, 162, 90, 1, 66, 212, 80, 208,
-    162, 90, 1, 74, 212, 80, 208, 162, 90, 1, 211, 87, 212, 80, 208, 162, 90,
-    1, 71, 212, 80, 208, 162, 90, 1, 234, 188, 212, 80, 208, 162, 90, 1, 193,
-    224, 212, 80, 208, 162, 90, 198, 70, 212, 80, 208, 162, 90, 198, 66, 212,
-    80, 208, 162, 90, 198, 67, 212, 80, 208, 162, 90, 198, 64, 212, 80, 208,
-    162, 90, 198, 65, 212, 80, 208, 162, 90, 198, 68, 212, 80, 208, 162, 90,
-    198, 69, 212, 80, 208, 162, 90, 3, 40, 209, 250, 212, 80, 208, 162, 90,
-    3, 40, 199, 3, 212, 80, 208, 162, 90, 3, 40, 219, 39, 212, 80, 208, 162,
-    90, 3, 40, 251, 101, 212, 80, 208, 162, 90, 3, 40, 223, 94, 212, 80, 208,
-    162, 90, 3, 192, 183, 192, 182, 212, 80, 208, 162, 90, 5, 219, 190, 212,
-    80, 208, 162, 90, 17, 191, 77, 212, 80, 208, 162, 90, 17, 107, 212, 80,
-    208, 162, 90, 17, 109, 212, 80, 208, 162, 90, 17, 138, 212, 80, 208, 162,
-    90, 17, 134, 212, 80, 208, 162, 90, 17, 149, 212, 80, 208, 162, 90, 17,
-    169, 212, 80, 208, 162, 90, 17, 175, 212, 80, 208, 162, 90, 17, 171, 212,
-    80, 208, 162, 90, 17, 178, 212, 80, 208, 162, 90, 219, 28, 212, 96, 212,
-    80, 208, 162, 90, 47, 247, 160, 198, 38, 1, 168, 198, 38, 1, 249, 153,
-    198, 38, 1, 190, 190, 198, 38, 1, 238, 32, 198, 38, 1, 155, 198, 38, 1,
-    231, 240, 198, 38, 1, 174, 198, 38, 1, 180, 198, 38, 1, 214, 68, 198, 38,
-    1, 188, 198, 38, 1, 247, 1, 198, 38, 1, 170, 198, 38, 1, 193, 190, 198,
-    38, 1, 223, 32, 198, 38, 1, 140, 198, 38, 1, 165, 198, 38, 1, 173, 198,
-    38, 1, 68, 198, 38, 1, 248, 38, 68, 198, 38, 1, 223, 49, 198, 38, 1, 248,
-    38, 223, 49, 198, 38, 1, 66, 198, 38, 1, 71, 198, 38, 1, 248, 38, 71,
-    198, 38, 1, 234, 65, 198, 38, 1, 248, 38, 234, 65, 198, 38, 1, 74, 198,
-    38, 1, 252, 25, 198, 38, 1, 248, 38, 252, 25, 198, 38, 1, 65, 198, 38, 3,
-    206, 180, 198, 79, 193, 163, 1, 252, 206, 193, 163, 1, 65, 193, 163, 1,
-    249, 153, 193, 163, 1, 247, 160, 193, 163, 1, 238, 32, 193, 163, 1, 231,
-    240, 193, 163, 1, 170, 193, 163, 1, 209, 228, 193, 163, 1, 173, 193, 163,
-    1, 180, 193, 163, 1, 168, 193, 163, 1, 190, 190, 193, 163, 1, 199, 49,
-    193, 163, 1, 233, 109, 193, 163, 1, 188, 193, 163, 1, 203, 165, 193, 163,
-    1, 223, 32, 193, 163, 1, 191, 123, 193, 163, 1, 193, 190, 193, 163, 1,
-    195, 188, 193, 163, 1, 155, 193, 163, 1, 74, 193, 163, 1, 250, 163, 193,
-    163, 1, 165, 193, 163, 1, 174, 193, 163, 1, 221, 215, 193, 163, 1, 140,
-    193, 163, 1, 71, 193, 163, 1, 68, 193, 163, 1, 214, 68, 193, 163, 1, 66,
-    193, 163, 1, 219, 66, 193, 163, 1, 197, 168, 193, 163, 1, 198, 26, 193,
-    163, 1, 211, 94, 193, 163, 1, 252, 165, 193, 163, 1, 251, 122, 193, 163,
-    1, 223, 136, 193, 163, 1, 211, 104, 193, 163, 1, 234, 103, 193, 163, 1,
-    252, 166, 193, 163, 1, 212, 101, 193, 163, 1, 196, 147, 193, 163, 1, 192,
-    24, 193, 163, 163, 197, 67, 193, 163, 163, 197, 66, 193, 163, 163, 221,
-    54, 193, 163, 163, 221, 53, 193, 163, 17, 191, 77, 193, 163, 17, 107,
-    193, 163, 17, 109, 193, 163, 17, 138, 193, 163, 17, 134, 193, 163, 17,
-    149, 193, 163, 17, 169, 193, 163, 17, 175, 193, 163, 17, 171, 193, 163,
-    17, 178, 193, 163, 213, 232, 56, 214, 243, 215, 120, 1, 74, 214, 243,
-    215, 120, 1, 211, 78, 214, 243, 215, 120, 1, 211, 120, 214, 243, 215,
-    120, 1, 210, 242, 214, 243, 215, 120, 1, 211, 94, 214, 243, 215, 120, 1,
-    65, 214, 243, 215, 120, 1, 251, 218, 214, 243, 215, 120, 1, 252, 155,
-    214, 243, 215, 120, 1, 251, 69, 214, 243, 215, 120, 1, 251, 245, 214,
-    243, 215, 120, 1, 68, 214, 243, 215, 120, 1, 223, 68, 214, 243, 215, 120,
-    1, 228, 18, 214, 243, 215, 120, 1, 223, 53, 214, 243, 215, 120, 1, 223,
-    200, 214, 243, 215, 120, 1, 66, 214, 243, 215, 120, 1, 196, 160, 214,
-    243, 215, 120, 1, 196, 158, 214, 243, 215, 120, 1, 196, 128, 214, 243,
-    215, 120, 1, 196, 62, 214, 243, 215, 120, 1, 71, 214, 243, 215, 120, 1,
-    234, 85, 214, 243, 215, 120, 1, 234, 180, 214, 243, 215, 120, 1, 234,
-    114, 214, 243, 215, 120, 1, 234, 103, 214, 243, 215, 120, 1, 233, 245,
-    214, 243, 215, 120, 1, 234, 122, 214, 243, 215, 120, 3, 211, 127, 214,
-    243, 215, 120, 3, 215, 138, 214, 243, 215, 120, 3, 198, 28, 214, 243,
-    215, 120, 3, 223, 193, 214, 243, 215, 120, 3, 200, 161, 214, 243, 215,
-    120, 17, 191, 77, 214, 243, 215, 120, 17, 107, 214, 243, 215, 120, 17,
-    109, 214, 243, 215, 120, 17, 138, 214, 243, 215, 120, 17, 134, 214, 243,
-    215, 120, 17, 149, 214, 243, 215, 120, 17, 169, 214, 243, 215, 120, 17,
-    175, 214, 243, 215, 120, 17, 171, 214, 243, 215, 120, 17, 178, 36, 5,
-    229, 166, 36, 5, 229, 160, 36, 5, 229, 162, 36, 5, 229, 165, 36, 5, 229,
-    163, 36, 5, 229, 164, 36, 5, 229, 161, 36, 5, 230, 147, 229, 170, 36, 5,
-    229, 167, 36, 5, 229, 168, 36, 5, 229, 169, 36, 5, 230, 147, 215, 76, 36,
-    5, 230, 147, 215, 77, 36, 5, 230, 147, 207, 236, 36, 5, 230, 147, 207,
-    237, 36, 5, 230, 147, 207, 238, 36, 5, 230, 147, 247, 207, 36, 5, 230,
-    147, 247, 208, 36, 5, 230, 147, 220, 172, 36, 5, 230, 147, 220, 173, 36,
-    5, 230, 147, 220, 174, 36, 5, 230, 147, 230, 131, 36, 5, 230, 147, 230,
-    132, 36, 5, 230, 147, 230, 133, 36, 5, 230, 147, 232, 58, 36, 5, 230,
-    147, 232, 59, 36, 5, 230, 147, 208, 118, 36, 5, 230, 147, 208, 119, 85,
-    84, 5, 218, 167, 221, 166, 85, 84, 5, 218, 163, 155, 85, 84, 5, 218, 161,
-    220, 232, 85, 84, 5, 218, 37, 222, 13, 85, 84, 5, 218, 7, 222, 22, 85,
-    84, 5, 218, 26, 221, 41, 85, 84, 5, 218, 54, 221, 67, 85, 84, 5, 217,
-    179, 220, 219, 85, 84, 5, 218, 158, 193, 86, 85, 84, 5, 218, 156, 193,
-    190, 85, 84, 5, 218, 154, 193, 0, 85, 84, 5, 217, 232, 193, 114, 85, 84,
-    5, 217, 240, 193, 125, 85, 84, 5, 217, 244, 193, 29, 85, 84, 5, 218, 57,
-    193, 48, 85, 84, 5, 217, 164, 192, 252, 85, 84, 5, 217, 215, 193, 112,
-    85, 84, 5, 218, 41, 192, 240, 85, 84, 5, 218, 53, 192, 242, 85, 84, 5,
-    217, 219, 192, 241, 85, 84, 5, 218, 152, 216, 44, 85, 84, 5, 218, 150,
-    217, 90, 85, 84, 5, 218, 148, 215, 122, 85, 84, 5, 218, 43, 216, 186, 85,
-    84, 5, 218, 8, 215, 231, 85, 84, 5, 217, 204, 215, 148, 85, 84, 5, 217,
-    169, 215, 142, 85, 84, 5, 218, 146, 248, 188, 85, 84, 5, 218, 143, 249,
-    153, 85, 84, 5, 218, 141, 248, 10, 85, 84, 5, 217, 208, 249, 1, 85, 84,
-    5, 218, 5, 249, 17, 85, 84, 5, 217, 255, 248, 97, 85, 84, 5, 217, 220,
-    248, 111, 85, 84, 5, 218, 131, 68, 85, 84, 5, 218, 129, 65, 85, 84, 5,
-    218, 127, 66, 85, 84, 5, 217, 195, 234, 188, 85, 84, 5, 218, 2, 71, 85,
-    84, 5, 217, 193, 211, 87, 85, 84, 5, 217, 211, 74, 85, 84, 5, 217, 221,
-    234, 166, 85, 84, 5, 217, 227, 223, 162, 85, 84, 5, 217, 223, 223, 162,
-    85, 84, 5, 217, 163, 251, 132, 85, 84, 5, 217, 180, 234, 103, 85, 84, 5,
-    218, 116, 202, 222, 85, 84, 5, 218, 114, 188, 85, 84, 5, 218, 112, 201,
-    4, 85, 84, 5, 217, 196, 205, 50, 85, 84, 5, 217, 242, 205, 68, 85, 84, 5,
-    217, 222, 202, 16, 85, 84, 5, 218, 23, 202, 46, 85, 84, 5, 217, 162, 202,
-    215, 85, 84, 5, 218, 102, 219, 146, 85, 84, 5, 218, 100, 173, 85, 84, 5,
-    218, 98, 218, 225, 85, 84, 5, 218, 18, 219, 228, 85, 84, 5, 218, 29, 219,
-    238, 85, 84, 5, 218, 48, 219, 8, 85, 84, 5, 217, 205, 219, 43, 85, 84, 5,
-    217, 248, 179, 219, 238, 85, 84, 5, 218, 124, 237, 44, 85, 84, 5, 218,
-    121, 238, 32, 85, 84, 5, 218, 118, 235, 89, 85, 84, 5, 218, 13, 237, 131,
-    85, 84, 5, 217, 178, 236, 146, 85, 84, 5, 217, 177, 236, 174, 85, 84, 5,
-    218, 110, 198, 193, 85, 84, 5, 218, 107, 190, 190, 85, 84, 5, 218, 105,
-    197, 94, 85, 84, 5, 218, 11, 199, 121, 85, 84, 5, 218, 47, 199, 145, 85,
-    84, 5, 217, 254, 198, 59, 85, 84, 5, 218, 33, 159, 85, 84, 5, 218, 96,
-    222, 244, 85, 84, 5, 218, 93, 223, 32, 85, 84, 5, 218, 91, 222, 182, 85,
-    84, 5, 217, 201, 223, 8, 85, 84, 5, 217, 245, 223, 10, 85, 84, 5, 217,
-    198, 222, 191, 85, 84, 5, 218, 39, 222, 201, 85, 84, 5, 217, 183, 179,
-    222, 201, 85, 84, 5, 218, 89, 192, 33, 85, 84, 5, 218, 86, 170, 85, 84,
-    5, 218, 84, 191, 225, 85, 84, 5, 217, 249, 192, 77, 85, 84, 5, 218, 22,
-    192, 80, 85, 84, 5, 217, 217, 191, 246, 85, 84, 5, 217, 237, 192, 12, 85,
-    84, 5, 218, 80, 233, 23, 85, 84, 5, 218, 78, 233, 109, 85, 84, 5, 218,
-    76, 232, 86, 85, 84, 5, 218, 24, 233, 52, 85, 84, 5, 218, 27, 233, 59,
-    85, 84, 5, 217, 225, 232, 162, 85, 84, 5, 218, 14, 232, 175, 85, 84, 5,
-    217, 161, 232, 85, 85, 84, 5, 218, 1, 233, 80, 85, 84, 5, 218, 74, 213,
-    179, 85, 84, 5, 218, 72, 214, 226, 85, 84, 5, 218, 70, 212, 130, 85, 84,
-    5, 217, 241, 214, 102, 85, 84, 5, 217, 189, 213, 31, 85, 84, 5, 217, 182,
-    229, 158, 85, 84, 5, 218, 65, 140, 85, 84, 5, 217, 172, 228, 159, 85, 84,
-    5, 218, 68, 229, 215, 85, 84, 5, 218, 6, 229, 245, 85, 84, 5, 218, 63,
-    228, 252, 85, 84, 5, 217, 218, 229, 23, 85, 84, 5, 218, 19, 229, 214, 85,
-    84, 5, 217, 230, 228, 245, 85, 84, 5, 218, 49, 229, 128, 85, 84, 5, 217,
-    228, 230, 56, 85, 84, 5, 218, 15, 228, 142, 85, 84, 5, 218, 50, 229, 198,
-    85, 84, 5, 217, 165, 228, 255, 85, 84, 5, 218, 56, 228, 155, 85, 84, 5,
-    218, 12, 214, 33, 85, 84, 5, 218, 61, 214, 47, 85, 84, 5, 218, 20, 214,
-    30, 85, 84, 5, 217, 243, 214, 41, 85, 84, 5, 217, 212, 214, 42, 85, 84,
-    5, 217, 202, 214, 31, 85, 84, 5, 217, 238, 214, 32, 85, 84, 5, 217, 199,
-    214, 46, 85, 84, 5, 217, 231, 214, 29, 85, 84, 5, 218, 16, 179, 214, 42,
-    85, 84, 5, 217, 252, 179, 214, 31, 85, 84, 5, 217, 175, 179, 214, 32, 85,
-    84, 5, 217, 203, 231, 53, 85, 84, 5, 217, 247, 231, 240, 85, 84, 5, 217,
-    190, 230, 179, 85, 84, 5, 217, 168, 231, 157, 85, 84, 5, 217, 192, 230,
-    165, 85, 84, 5, 217, 191, 230, 175, 85, 84, 5, 217, 174, 214, 52, 85, 84,
-    5, 218, 45, 213, 245, 85, 84, 5, 217, 181, 213, 234, 85, 84, 5, 218, 34,
-    209, 185, 85, 84, 5, 218, 3, 168, 85, 84, 5, 218, 52, 208, 165, 85, 84,
-    5, 218, 21, 210, 49, 85, 84, 5, 218, 51, 210, 63, 85, 84, 5, 218, 0, 209,
-    37, 85, 84, 5, 218, 36, 209, 73, 85, 84, 5, 217, 213, 216, 252, 85, 84,
-    5, 218, 40, 217, 11, 85, 84, 5, 217, 236, 216, 246, 85, 84, 5, 218, 55,
-    217, 3, 85, 84, 5, 217, 170, 217, 3, 85, 84, 5, 218, 30, 217, 4, 85, 84,
-    5, 217, 186, 216, 247, 85, 84, 5, 217, 184, 216, 248, 85, 84, 5, 217,
-    171, 216, 240, 85, 84, 5, 217, 197, 179, 217, 4, 85, 84, 5, 217, 253,
-    179, 216, 247, 85, 84, 5, 217, 216, 179, 216, 248, 85, 84, 5, 217, 226,
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-    84, 5, 218, 46, 231, 182, 85, 84, 5, 217, 210, 231, 169, 85, 84, 5, 218,
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-    185, 195, 148, 85, 84, 5, 218, 17, 195, 153, 85, 84, 5, 217, 214, 195, 8,
-    85, 84, 5, 218, 25, 195, 24, 85, 84, 5, 217, 194, 212, 74, 85, 84, 5,
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-    9, 13, 193, 133, 9, 13, 191, 113, 9, 13, 230, 81, 9, 13, 199, 219, 9, 13,
-    192, 75, 9, 13, 222, 106, 9, 13, 220, 35, 9, 13, 216, 208, 9, 13, 213,
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-    13, 208, 89, 9, 13, 207, 71, 9, 13, 203, 109, 9, 13, 199, 114, 9, 13,
-    199, 29, 9, 13, 221, 210, 9, 13, 199, 41, 9, 13, 238, 26, 9, 13, 191,
-    116, 9, 13, 231, 86, 9, 13, 236, 139, 248, 245, 9, 13, 236, 139, 213, 24,
-    9, 13, 236, 139, 233, 46, 9, 13, 236, 139, 208, 89, 9, 13, 89, 248, 245,
-    9, 13, 89, 223, 6, 9, 13, 89, 229, 210, 9, 13, 89, 230, 81, 9, 13, 89,
-    192, 75, 9, 13, 89, 222, 106, 9, 13, 89, 220, 35, 9, 13, 89, 216, 208, 9,
-    13, 89, 213, 24, 9, 13, 89, 205, 46, 9, 13, 89, 251, 230, 9, 13, 89, 233,
-    46, 9, 13, 89, 205, 192, 9, 13, 89, 208, 89, 9, 13, 89, 203, 109, 9, 13,
-    89, 199, 114, 9, 13, 89, 199, 29, 9, 13, 89, 221, 210, 9, 13, 89, 238,
-    26, 9, 13, 89, 231, 86, 9, 13, 199, 214, 223, 6, 9, 13, 199, 214, 230,
-    81, 9, 13, 199, 214, 192, 75, 9, 13, 199, 214, 220, 35, 9, 13, 199, 214,
-    213, 24, 9, 13, 199, 214, 205, 46, 9, 13, 199, 214, 251, 230, 9, 13, 199,
-    214, 205, 192, 9, 13, 199, 214, 208, 89, 9, 13, 199, 214, 203, 109, 9,
-    13, 199, 214, 221, 210, 9, 13, 199, 214, 238, 26, 9, 13, 199, 214, 231,
-    86, 9, 13, 199, 214, 236, 139, 213, 24, 9, 13, 199, 214, 236, 139, 208,
-    89, 9, 13, 201, 36, 248, 245, 9, 13, 201, 36, 223, 6, 9, 13, 201, 36,
-    229, 210, 9, 13, 201, 36, 230, 81, 9, 13, 201, 36, 199, 219, 9, 13, 201,
-    36, 192, 75, 9, 13, 201, 36, 222, 106, 9, 13, 201, 36, 216, 208, 9, 13,
-    201, 36, 213, 24, 9, 13, 201, 36, 205, 46, 9, 13, 201, 36, 251, 230, 9,
-    13, 201, 36, 233, 46, 9, 13, 201, 36, 205, 192, 9, 13, 201, 36, 208, 89,
-    9, 13, 201, 36, 203, 109, 9, 13, 201, 36, 199, 114, 9, 13, 201, 36, 199,
-    29, 9, 13, 201, 36, 221, 210, 9, 13, 201, 36, 238, 26, 9, 13, 201, 36,
-    191, 116, 9, 13, 201, 36, 231, 86, 9, 13, 201, 36, 236, 139, 248, 245, 9,
-    13, 201, 36, 236, 139, 233, 46, 9, 13, 219, 3, 251, 192, 9, 13, 219, 3,
-    248, 245, 9, 13, 219, 3, 223, 6, 9, 13, 219, 3, 238, 3, 9, 13, 219, 3,
-    229, 210, 9, 13, 219, 3, 193, 133, 9, 13, 219, 3, 191, 113, 9, 13, 219,
-    3, 230, 81, 9, 13, 219, 3, 199, 219, 9, 13, 219, 3, 192, 75, 9, 13, 219,
-    3, 220, 35, 9, 13, 219, 3, 216, 208, 9, 13, 219, 3, 213, 24, 9, 13, 219,
-    3, 205, 46, 9, 13, 219, 3, 251, 230, 9, 13, 219, 3, 233, 46, 9, 13, 219,
-    3, 205, 192, 9, 13, 219, 3, 208, 89, 9, 13, 219, 3, 207, 71, 9, 13, 219,
-    3, 203, 109, 9, 13, 219, 3, 199, 114, 9, 13, 219, 3, 199, 29, 9, 13, 219,
-    3, 221, 210, 9, 13, 219, 3, 199, 41, 9, 13, 219, 3, 238, 26, 9, 13, 219,
-    3, 191, 116, 9, 13, 219, 3, 231, 86, 9, 13, 235, 129, 248, 245, 9, 13,
-    235, 129, 223, 6, 9, 13, 235, 129, 238, 3, 9, 13, 235, 129, 193, 133, 9,
-    13, 235, 129, 191, 113, 9, 13, 235, 129, 230, 81, 9, 13, 235, 129, 199,
-    219, 9, 13, 235, 129, 192, 75, 9, 13, 235, 129, 220, 35, 9, 13, 235, 129,
-    216, 208, 9, 13, 235, 129, 213, 24, 9, 13, 235, 129, 205, 46, 9, 13, 235,
-    129, 251, 230, 9, 13, 235, 129, 233, 46, 9, 13, 235, 129, 205, 192, 9,
-    13, 235, 129, 208, 89, 9, 13, 235, 129, 207, 71, 9, 13, 235, 129, 203,
-    109, 9, 13, 235, 129, 199, 114, 9, 13, 235, 129, 199, 29, 9, 13, 235,
-    129, 221, 210, 9, 13, 235, 129, 199, 41, 9, 13, 235, 129, 238, 26, 9, 13,
-    235, 129, 191, 116, 9, 13, 235, 129, 231, 86, 9, 13, 211, 67, 92, 4, 182,
-    4, 199, 168, 9, 13, 211, 67, 182, 4, 238, 3, 217, 114, 123, 234, 204,
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-    66, 217, 114, 123, 186, 193, 66, 217, 114, 123, 207, 87, 235, 111, 217,
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-    79, 243, 140, 217, 114, 123, 232, 128, 79, 243, 140, 217, 114, 123, 232,
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-    123, 105, 79, 249, 102, 217, 114, 123, 115, 79, 249, 102, 217, 114, 123,
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-    123, 202, 136, 79, 249, 102, 217, 114, 123, 203, 247, 79, 249, 102, 217,
-    114, 123, 234, 164, 79, 249, 102, 217, 114, 123, 213, 175, 79, 249, 102,
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-    123, 115, 79, 243, 7, 217, 114, 123, 232, 128, 79, 243, 7, 217, 114, 123,
-    232, 226, 79, 243, 7, 217, 114, 123, 202, 136, 79, 243, 7, 217, 114, 123,
-    203, 247, 79, 243, 7, 217, 114, 123, 234, 164, 79, 243, 7, 217, 114, 123,
-    213, 175, 79, 243, 7, 217, 114, 123, 209, 85, 217, 114, 123, 211, 53,
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-    217, 114, 123, 200, 200, 217, 114, 123, 250, 149, 217, 114, 123, 193, 56,
-    217, 114, 123, 222, 194, 217, 114, 123, 249, 146, 236, 151, 123, 228,
-    241, 249, 146, 236, 151, 123, 228, 239, 236, 151, 123, 228, 238, 236,
-    151, 123, 228, 237, 236, 151, 123, 228, 236, 236, 151, 123, 228, 235,
-    236, 151, 123, 228, 234, 236, 151, 123, 228, 233, 236, 151, 123, 228,
-    232, 236, 151, 123, 228, 231, 236, 151, 123, 228, 230, 236, 151, 123,
-    228, 229, 236, 151, 123, 228, 228, 236, 151, 123, 228, 227, 236, 151,
-    123, 228, 226, 236, 151, 123, 228, 225, 236, 151, 123, 228, 224, 236,
-    151, 123, 228, 223, 236, 151, 123, 228, 222, 236, 151, 123, 228, 221,
-    236, 151, 123, 228, 220, 236, 151, 123, 228, 219, 236, 151, 123, 228,
-    218, 236, 151, 123, 228, 217, 236, 151, 123, 228, 216, 236, 151, 123,
-    228, 215, 236, 151, 123, 228, 214, 236, 151, 123, 228, 213, 236, 151,
-    123, 228, 212, 236, 151, 123, 228, 211, 236, 151, 123, 228, 210, 236,
-    151, 123, 228, 209, 236, 151, 123, 228, 208, 236, 151, 123, 228, 207,
-    236, 151, 123, 228, 206, 236, 151, 123, 228, 205, 236, 151, 123, 228,
-    204, 236, 151, 123, 228, 203, 236, 151, 123, 228, 202, 236, 151, 123,
-    228, 201, 236, 151, 123, 228, 200, 236, 151, 123, 228, 199, 236, 151,
-    123, 228, 198, 236, 151, 123, 228, 197, 236, 151, 123, 228, 196, 236,
-    151, 123, 228, 195, 236, 151, 123, 228, 194, 236, 151, 123, 228, 193,
-    236, 151, 123, 228, 192, 236, 151, 123, 228, 191, 236, 151, 123, 81, 249,
-    146, 236, 151, 123, 195, 134, 236, 151, 123, 195, 133, 236, 151, 123,
-    195, 132, 236, 151, 123, 195, 131, 236, 151, 123, 195, 130, 236, 151,
-    123, 195, 129, 236, 151, 123, 195, 128, 236, 151, 123, 195, 127, 236,
-    151, 123, 195, 126, 236, 151, 123, 195, 125, 236, 151, 123, 195, 124,
-    236, 151, 123, 195, 123, 236, 151, 123, 195, 122, 236, 151, 123, 195,
-    121, 236, 151, 123, 195, 120, 236, 151, 123, 195, 119, 236, 151, 123,
-    195, 118, 236, 151, 123, 195, 117, 236, 151, 123, 195, 116, 236, 151,
-    123, 195, 115, 236, 151, 123, 195, 114, 236, 151, 123, 195, 113, 236,
-    151, 123, 195, 112, 236, 151, 123, 195, 111, 236, 151, 123, 195, 110,
-    236, 151, 123, 195, 109, 236, 151, 123, 195, 108, 236, 151, 123, 195,
-    107, 236, 151, 123, 195, 106, 236, 151, 123, 195, 105, 236, 151, 123,
-    195, 104, 236, 151, 123, 195, 103, 236, 151, 123, 195, 102, 236, 151,
-    123, 195, 101, 236, 151, 123, 195, 100, 236, 151, 123, 195, 99, 236, 151,
-    123, 195, 98, 236, 151, 123, 195, 97, 236, 151, 123, 195, 96, 236, 151,
-    123, 195, 95, 236, 151, 123, 195, 94, 236, 151, 123, 195, 93, 236, 151,
-    123, 195, 92, 236, 151, 123, 195, 91, 236, 151, 123, 195, 90, 236, 151,
-    123, 195, 89, 236, 151, 123, 195, 88, 236, 151, 123, 195, 87, 236, 151,
-    123, 195, 86, 209, 95, 247, 101, 249, 146, 209, 95, 247, 101, 252, 53,
-    79, 201, 244, 209, 95, 247, 101, 105, 79, 201, 244, 209, 95, 247, 101,
-    115, 79, 201, 244, 209, 95, 247, 101, 232, 128, 79, 201, 244, 209, 95,
-    247, 101, 232, 226, 79, 201, 244, 209, 95, 247, 101, 202, 136, 79, 201,
-    244, 209, 95, 247, 101, 203, 247, 79, 201, 244, 209, 95, 247, 101, 234,
-    164, 79, 201, 244, 209, 95, 247, 101, 213, 175, 79, 201, 244, 209, 95,
-    247, 101, 199, 96, 79, 201, 244, 209, 95, 247, 101, 223, 30, 79, 201,
-    244, 209, 95, 247, 101, 221, 77, 79, 201, 244, 209, 95, 247, 101, 208,
-    15, 79, 201, 244, 209, 95, 247, 101, 221, 139, 79, 201, 244, 209, 95,
-    247, 101, 252, 53, 79, 229, 221, 209, 95, 247, 101, 105, 79, 229, 221,
-    209, 95, 247, 101, 115, 79, 229, 221, 209, 95, 247, 101, 232, 128, 79,
-    229, 221, 209, 95, 247, 101, 232, 226, 79, 229, 221, 209, 95, 247, 101,
-    202, 136, 79, 229, 221, 209, 95, 247, 101, 203, 247, 79, 229, 221, 209,
-    95, 247, 101, 234, 164, 79, 229, 221, 209, 95, 247, 101, 213, 175, 79,
-    229, 221, 209, 95, 247, 101, 199, 96, 79, 229, 221, 209, 95, 247, 101,
-    223, 30, 79, 229, 221, 209, 95, 247, 101, 221, 77, 79, 229, 221, 209, 95,
-    247, 101, 208, 15, 79, 229, 221, 209, 95, 247, 101, 221, 139, 79, 229,
-    221, 209, 95, 247, 101, 207, 87, 222, 194, 209, 95, 247, 101, 252, 53,
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-    79, 237, 31, 209, 95, 247, 101, 232, 128, 79, 237, 31, 209, 95, 247, 101,
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-    103, 248, 52, 8, 6, 1, 206, 8, 47, 43, 8, 6, 1, 247, 193, 47, 43, 8, 6,
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-    6, 1, 71, 112, 8, 6, 1, 233, 175, 112, 8, 6, 1, 232, 51, 112, 8, 6, 1,
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-    112, 8, 6, 1, 74, 112, 8, 6, 1, 210, 236, 112, 8, 6, 1, 208, 104, 112, 8,
-    6, 1, 146, 112, 8, 6, 1, 206, 8, 112, 8, 6, 1, 200, 43, 112, 8, 6, 1, 66,
-    112, 8, 6, 1, 196, 12, 112, 8, 6, 1, 193, 224, 112, 8, 6, 1, 192, 235,
-    112, 8, 6, 1, 192, 159, 112, 8, 6, 1, 191, 166, 112, 228, 126, 112, 215,
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-    247, 193, 214, 106, 47, 8, 6, 1, 238, 127, 214, 106, 47, 8, 6, 1, 71,
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-    6, 1, 223, 35, 214, 106, 47, 8, 6, 1, 222, 152, 214, 106, 47, 8, 6, 1,
-    172, 214, 106, 47, 8, 6, 1, 218, 168, 214, 106, 47, 8, 6, 1, 215, 61,
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-    8, 6, 1, 208, 104, 214, 106, 47, 8, 6, 1, 146, 214, 106, 47, 8, 6, 1,
-    206, 8, 214, 106, 47, 8, 6, 1, 200, 43, 214, 106, 47, 8, 6, 1, 66, 214,
-    106, 47, 8, 6, 1, 196, 12, 214, 106, 47, 8, 6, 1, 193, 224, 214, 106, 47,
-    8, 6, 1, 192, 235, 214, 106, 47, 8, 6, 1, 192, 159, 214, 106, 47, 8, 6,
-    1, 191, 166, 207, 147, 216, 239, 56, 207, 147, 216, 235, 56, 207, 147,
-    215, 164, 56, 47, 247, 66, 47, 247, 194, 4, 211, 4, 249, 141, 47, 228,
-    145, 233, 12, 214, 106, 112, 8, 6, 1, 65, 214, 106, 112, 8, 6, 1, 250,
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-    112, 8, 6, 1, 232, 51, 214, 106, 112, 8, 6, 1, 230, 116, 214, 106, 112,
-    8, 6, 1, 68, 214, 106, 112, 8, 6, 1, 223, 35, 214, 106, 112, 8, 6, 1,
-    222, 152, 214, 106, 112, 8, 6, 1, 172, 214, 106, 112, 8, 6, 1, 218, 168,
-    214, 106, 112, 8, 6, 1, 215, 61, 214, 106, 112, 8, 6, 1, 74, 214, 106,
-    112, 8, 6, 1, 210, 236, 214, 106, 112, 8, 6, 1, 208, 104, 214, 106, 112,
-    8, 6, 1, 146, 214, 106, 112, 8, 6, 1, 206, 8, 214, 106, 112, 8, 6, 1,
-    200, 43, 214, 106, 112, 8, 6, 1, 66, 214, 106, 112, 8, 6, 1, 196, 12,
-    214, 106, 112, 8, 6, 1, 193, 224, 214, 106, 112, 8, 6, 1, 192, 235, 214,
-    106, 112, 8, 6, 1, 192, 159, 214, 106, 112, 8, 6, 1, 191, 166, 238, 214,
-    214, 106, 112, 8, 6, 1, 210, 236, 214, 106, 112, 228, 28, 214, 106, 112,
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-    126, 51, 236, 194, 112, 242, 247, 112, 239, 14, 112, 232, 108, 112, 228,
-    19, 112, 214, 79, 112, 214, 70, 112, 211, 125, 112, 202, 9, 112, 133, 4,
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-    207, 79, 223, 145, 16, 1, 232, 51, 207, 79, 223, 145, 16, 1, 230, 116,
-    207, 79, 223, 145, 16, 1, 68, 207, 79, 223, 145, 16, 1, 223, 35, 207, 79,
-    223, 145, 16, 1, 222, 152, 207, 79, 223, 145, 16, 1, 172, 207, 79, 223,
-    145, 16, 1, 218, 168, 207, 79, 223, 145, 16, 1, 215, 61, 207, 79, 223,
-    145, 16, 1, 74, 207, 79, 223, 145, 16, 1, 210, 236, 207, 79, 223, 145,
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-    207, 79, 223, 145, 16, 1, 192, 235, 207, 79, 223, 145, 16, 1, 192, 159,
-    207, 79, 223, 145, 16, 1, 191, 166, 51, 229, 120, 229, 9, 112, 72, 221,
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-    112, 12, 196, 95, 225, 229, 112, 72, 237, 146, 112, 12, 196, 95, 225,
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-    209, 112, 12, 196, 95, 225, 202, 112, 12, 196, 95, 225, 211, 112, 12,
-    196, 95, 225, 232, 112, 12, 196, 95, 225, 218, 112, 12, 196, 95, 225,
-    234, 112, 12, 196, 95, 225, 210, 112, 12, 196, 95, 225, 233, 112, 12,
-    196, 95, 225, 196, 112, 12, 196, 95, 225, 201, 112, 12, 196, 95, 225,
-    194, 112, 12, 196, 95, 225, 224, 112, 12, 196, 95, 225, 226, 112, 12,
-    196, 95, 225, 204, 112, 12, 196, 95, 225, 215, 112, 12, 196, 95, 225,
-    213, 112, 12, 196, 95, 225, 239, 112, 12, 196, 95, 225, 238, 112, 12,
-    196, 95, 225, 192, 112, 12, 196, 95, 225, 219, 112, 12, 196, 95, 225,
-    237, 112, 12, 196, 95, 225, 228, 112, 12, 196, 95, 225, 214, 112, 12,
-    196, 95, 225, 193, 112, 12, 196, 95, 225, 216, 112, 12, 196, 95, 225,
-    198, 112, 12, 196, 95, 225, 197, 112, 12, 196, 95, 225, 227, 112, 12,
-    196, 95, 225, 205, 112, 12, 196, 95, 225, 207, 112, 12, 196, 95, 225,
-    208, 112, 12, 196, 95, 225, 200, 112, 12, 196, 95, 225, 231, 112, 12,
-    196, 95, 225, 225, 112, 12, 196, 95, 225, 191, 198, 42, 203, 103, 248,
-    52, 12, 196, 95, 225, 206, 198, 42, 203, 103, 248, 52, 12, 196, 95, 225,
-    238, 198, 42, 203, 103, 248, 52, 12, 196, 95, 225, 236, 198, 42, 203,
-    103, 248, 52, 12, 196, 95, 225, 220, 198, 42, 203, 103, 248, 52, 12, 196,
-    95, 225, 203, 198, 42, 203, 103, 248, 52, 12, 196, 95, 225, 216, 198, 42,
-    203, 103, 248, 52, 12, 196, 95, 225, 199, 198, 42, 203, 103, 248, 52, 12,
-    196, 95, 225, 230, 198, 42, 203, 103, 248, 52, 12, 196, 95, 225, 212, 47,
-    228, 14, 252, 27, 47, 228, 14, 252, 58, 206, 113, 16, 40, 232, 86, 206,
-    113, 16, 40, 218, 225, 206, 113, 16, 40, 203, 23, 206, 113, 16, 40, 192,
-    207, 206, 113, 16, 40, 203, 2, 206, 113, 16, 40, 247, 148, 238, 139, 232,
-    173, 242, 219, 196, 117, 213, 191, 4, 201, 99, 200, 193, 139, 215, 183,
-    200, 192, 242, 251, 250, 183, 235, 61, 200, 191, 139, 247, 253, 207, 148,
-    248, 29, 250, 183, 213, 190, 193, 144, 193, 138, 195, 14, 216, 52, 193,
-    128, 234, 208, 231, 12, 233, 232, 234, 208, 231, 12, 251, 140, 234, 208,
-    231, 12, 250, 202, 231, 12, 4, 216, 177, 214, 80, 215, 206, 113, 193,
-    130, 238, 228, 215, 206, 113, 232, 238, 208, 23, 215, 206, 113, 193, 130,
-    231, 49, 215, 206, 113, 232, 80, 215, 206, 113, 193, 159, 231, 49, 215,
-    206, 113, 220, 6, 208, 23, 215, 206, 113, 193, 159, 238, 228, 215, 206,
-    113, 238, 228, 215, 205, 214, 80, 215, 206, 4, 233, 103, 232, 238, 208,
-    23, 215, 206, 4, 233, 103, 220, 6, 208, 23, 215, 206, 4, 233, 103, 232,
-    80, 215, 206, 4, 233, 103, 200, 199, 4, 233, 103, 231, 8, 201, 102, 203,
-    45, 201, 102, 199, 21, 62, 235, 97, 63, 200, 198, 63, 200, 199, 4, 2,
-    242, 210, 63, 200, 199, 248, 242, 242, 210, 63, 200, 199, 248, 242, 242,
-    211, 4, 207, 149, 242, 211, 4, 207, 149, 242, 211, 4, 202, 52, 242, 211,
-    4, 219, 129, 242, 211, 4, 198, 46, 232, 174, 193, 67, 248, 116, 233, 103,
-    228, 181, 236, 162, 199, 227, 247, 228, 243, 103, 205, 48, 233, 226, 197,
-    254, 237, 139, 197, 254, 210, 183, 197, 254, 247, 153, 228, 181, 210, 15,
-    197, 78, 243, 107, 248, 119, 206, 126, 229, 149, 200, 196, 248, 119, 234,
-    212, 79, 217, 103, 234, 212, 79, 206, 245, 229, 193, 232, 128, 219, 234,
-    242, 209, 217, 69, 219, 233, 233, 84, 219, 233, 219, 234, 232, 181, 223,
-    163, 193, 66, 215, 98, 198, 83, 250, 162, 230, 218, 216, 196, 193, 142,
-    199, 187, 219, 201, 249, 98, 209, 133, 207, 87, 251, 46, 230, 201, 251,
-    46, 210, 55, 210, 59, 243, 108, 201, 42, 230, 63, 202, 89, 79, 209, 112,
-    216, 225, 211, 105, 248, 98, 209, 9, 219, 212, 206, 246, 238, 234, 206,
-    246, 249, 111, 239, 17, 206, 245, 238, 167, 23, 206, 245, 201, 83, 248,
-    66, 201, 243, 248, 43, 232, 106, 232, 102, 206, 152, 200, 142, 209, 12,
-    237, 235, 211, 153, 200, 165, 232, 103, 203, 13, 232, 237, 247, 147, 4,
-    200, 134, 237, 80, 202, 32, 228, 27, 238, 232, 203, 121, 228, 26, 228,
-    27, 238, 232, 235, 126, 239, 16, 243, 66, 164, 247, 118, 219, 24, 238,
-    158, 228, 254, 209, 14, 203, 29, 248, 222, 248, 62, 209, 15, 79, 232,
-    161, 239, 15, 232, 150, 23, 221, 78, 199, 133, 193, 51, 230, 31, 205,
-    176, 248, 79, 23, 238, 181, 193, 63, 231, 16, 242, 94, 231, 16, 197, 204,
-    235, 104, 248, 253, 215, 140, 242, 226, 248, 253, 215, 139, 249, 149,
-    248, 78, 232, 150, 23, 221, 79, 4, 209, 97, 248, 79, 4, 209, 30, 239, 3,
-    209, 32, 206, 247, 193, 11, 208, 222, 248, 157, 247, 146, 223, 29, 243,
-    56, 197, 254, 233, 67, 243, 55, 232, 240, 232, 241, 201, 241, 249, 109,
-    210, 102, 209, 31, 239, 54, 249, 111, 199, 191, 197, 254, 238, 214, 232,
-    211, 209, 134, 237, 136, 223, 19, 236, 154, 247, 90, 201, 41, 193, 67,
-    243, 82, 215, 206, 195, 54, 247, 8, 205, 90, 205, 120, 230, 225, 247,
-    111, 229, 224, 4, 198, 136, 211, 105, 199, 34, 219, 224, 248, 72, 79,
-    232, 185, 216, 54, 216, 219, 207, 58, 206, 247, 37, 221, 221, 4, 223, 28,
-    201, 11, 216, 89, 219, 168, 202, 86, 239, 22, 221, 72, 249, 13, 250, 213,
-    37, 213, 1, 249, 13, 237, 86, 37, 213, 1, 233, 0, 232, 112, 252, 31, 198,
-    180, 247, 91, 228, 183, 233, 33, 193, 93, 206, 139, 242, 97, 232, 232,
-    209, 53, 23, 232, 236, 216, 89, 215, 169, 247, 132, 243, 14, 229, 231,
-    250, 224, 210, 188, 198, 54, 230, 9, 243, 0, 199, 87, 198, 181, 242, 242,
-    248, 107, 210, 6, 250, 222, 195, 65, 231, 214, 236, 234, 229, 117, 202,
-    79, 217, 148, 248, 170, 231, 215, 237, 24, 248, 65, 232, 187, 209, 95,
-    247, 99, 37, 213, 6, 215, 129, 37, 213, 1, 205, 104, 230, 162, 37, 221,
-    220, 197, 179, 195, 42, 37, 205, 82, 206, 42, 203, 60, 4, 205, 123, 199,
-    92, 207, 170, 23, 249, 111, 202, 109, 23, 202, 109, 248, 91, 249, 68, 23,
-    228, 247, 243, 109, 232, 217, 202, 51, 206, 43, 200, 170, 201, 202, 216,
-    219, 197, 205, 228, 184, 207, 171, 251, 141, 232, 158, 206, 56, 232, 158,
-    200, 137, 193, 110, 219, 134, 230, 249, 207, 172, 215, 191, 207, 172,
-    247, 102, 238, 225, 249, 65, 23, 249, 111, 195, 13, 233, 22, 229, 12,
-    201, 75, 23, 249, 111, 228, 27, 229, 12, 201, 75, 23, 208, 157, 199, 234,
-    199, 92, 210, 207, 23, 249, 111, 202, 53, 247, 107, 215, 184, 247, 130,
-    249, 16, 4, 196, 117, 247, 255, 239, 36, 228, 173, 247, 253, 242, 250,
-    237, 90, 228, 173, 247, 254, 242, 240, 247, 254, 237, 82, 237, 83, 223,
-    60, 214, 208, 210, 109, 201, 113, 228, 173, 247, 254, 228, 173, 4, 231,
-    198, 211, 144, 247, 254, 223, 19, 209, 20, 211, 143, 233, 231, 209, 20,
-    211, 143, 228, 182, 249, 92, 250, 151, 199, 102, 217, 148, 228, 178, 218,
-    242, 228, 178, 239, 20, 201, 57, 205, 89, 237, 94, 201, 57, 233, 92, 223,
-    40, 220, 18, 223, 19, 247, 80, 233, 231, 247, 80, 63, 210, 28, 62, 210,
-    28, 193, 136, 63, 232, 217, 193, 136, 62, 232, 217, 206, 125, 62, 206,
-    125, 220, 117, 249, 132, 207, 170, 23, 202, 244, 248, 70, 23, 57, 251,
-    136, 234, 109, 52, 232, 227, 196, 253, 234, 109, 52, 232, 227, 196, 250,
-    234, 109, 52, 232, 227, 196, 248, 234, 109, 52, 232, 227, 196, 246, 234,
-    109, 52, 232, 227, 196, 244, 207, 130, 215, 181, 210, 247, 193, 144, 248,
-    3, 238, 239, 198, 173, 219, 185, 207, 174, 247, 78, 235, 111, 238, 223,
-    193, 96, 202, 60, 202, 58, 228, 183, 207, 142, 230, 255, 203, 107, 215,
-    225, 206, 129, 243, 93, 236, 162, 209, 147, 248, 109, 234, 131, 211, 156,
-    201, 218, 203, 102, 248, 2, 251, 89, 228, 253, 220, 108, 248, 251, 232,
-    236, 197, 204, 232, 236, 248, 117, 197, 55, 230, 7, 243, 94, 249, 149,
-    243, 94, 232, 96, 249, 149, 243, 94, 248, 160, 210, 30, 221, 61, 209, 36,
-    235, 101, 247, 134, 249, 137, 247, 134, 236, 153, 215, 182, 233, 103,
-    238, 240, 233, 103, 198, 174, 233, 103, 207, 175, 233, 103, 247, 79, 233,
-    103, 235, 112, 233, 103, 201, 200, 193, 96, 228, 184, 233, 103, 215, 226,
-    233, 103, 236, 163, 233, 103, 209, 148, 233, 103, 232, 100, 233, 103,
-    230, 59, 233, 103, 193, 38, 233, 103, 249, 10, 233, 103, 210, 162, 233,
-    103, 209, 148, 213, 13, 210, 76, 208, 208, 243, 77, 233, 185, 233, 193,
-    234, 211, 213, 13, 215, 179, 198, 61, 63, 133, 209, 58, 249, 144, 223,
-    148, 63, 144, 209, 58, 249, 144, 223, 148, 63, 45, 209, 58, 249, 144,
-    223, 148, 63, 50, 209, 58, 249, 144, 223, 148, 232, 230, 230, 54, 56,
-    193, 136, 230, 54, 56, 211, 126, 230, 54, 56, 198, 211, 133, 56, 198,
-    211, 144, 56, 242, 241, 230, 29, 56, 211, 77, 230, 29, 56, 238, 208, 193,
-    34, 230, 9, 233, 188, 214, 111, 200, 41, 223, 9, 235, 106, 221, 142, 248,
-    173, 193, 34, 242, 212, 208, 137, 230, 33, 209, 10, 217, 78, 203, 52,
-    250, 178, 203, 52, 229, 134, 203, 52, 193, 34, 205, 139, 193, 34, 248,
-    90, 232, 156, 247, 220, 223, 163, 202, 187, 247, 219, 223, 163, 202, 187,
-    248, 60, 231, 28, 217, 90, 193, 35, 233, 81, 217, 91, 23, 193, 36, 229,
-    6, 230, 28, 105, 216, 187, 229, 6, 230, 28, 105, 193, 33, 229, 6, 230,
-    28, 209, 50, 211, 142, 193, 36, 4, 247, 239, 234, 209, 248, 30, 4, 195,
-    144, 209, 251, 4, 248, 121, 230, 78, 217, 91, 4, 230, 176, 209, 186, 217,
-    73, 217, 91, 4, 197, 63, 211, 118, 217, 90, 211, 118, 193, 35, 249, 148,
-    239, 37, 193, 19, 208, 213, 223, 19, 211, 137, 223, 19, 230, 254, 231,
-    61, 249, 149, 251, 120, 233, 198, 251, 182, 251, 183, 215, 215, 223, 168,
-    202, 103, 223, 137, 237, 79, 209, 250, 230, 170, 237, 240, 219, 95, 214,
-    235, 209, 48, 233, 104, 217, 33, 230, 77, 249, 86, 209, 52, 200, 62, 209,
-    140, 221, 123, 77, 218, 242, 219, 175, 206, 188, 231, 155, 201, 65, 221,
-    122, 248, 71, 238, 243, 4, 229, 223, 193, 117, 249, 6, 229, 223, 248, 22,
-    229, 223, 105, 229, 221, 201, 239, 229, 223, 230, 186, 229, 223, 229,
-    224, 4, 57, 248, 115, 229, 223, 230, 201, 229, 223, 192, 73, 229, 223,
-    208, 138, 229, 223, 229, 224, 4, 206, 247, 207, 12, 229, 221, 229, 224,
-    237, 136, 237, 33, 203, 135, 4, 42, 75, 223, 117, 234, 135, 156, 247,
-    251, 251, 119, 113, 248, 99, 202, 92, 113, 242, 85, 113, 201, 212, 200,
-    144, 113, 235, 97, 237, 216, 113, 209, 141, 79, 209, 37, 232, 199, 248,
-    185, 236, 195, 113, 201, 230, 249, 109, 198, 231, 249, 109, 63, 232, 186,
-    228, 141, 209, 56, 113, 215, 230, 249, 130, 238, 170, 233, 218, 88, 236,
-    155, 56, 238, 230, 247, 100, 249, 91, 4, 192, 71, 56, 249, 91, 4, 236,
-    155, 56, 249, 91, 4, 233, 234, 56, 249, 91, 4, 209, 8, 56, 215, 230, 4,
-    193, 60, 243, 137, 4, 196, 66, 197, 250, 23, 192, 71, 56, 205, 60, 209,
-    249, 239, 59, 248, 28, 216, 41, 232, 191, 236, 220, 211, 60, 236, 226,
-    235, 55, 233, 7, 232, 171, 211, 77, 233, 7, 232, 171, 210, 205, 4, 238,
-    175, 210, 205, 233, 96, 196, 77, 247, 140, 199, 130, 247, 140, 247, 101,
-    223, 148, 243, 137, 4, 196, 66, 197, 249, 243, 137, 4, 235, 119, 197,
-    249, 249, 88, 243, 136, 242, 225, 208, 133, 206, 115, 208, 133, 210, 134,
-    201, 53, 206, 50, 197, 238, 206, 50, 248, 95, 199, 232, 219, 229, 213, 4,
-    213, 5, 4, 237, 135, 238, 242, 242, 219, 248, 96, 211, 77, 248, 96, 230,
-    201, 248, 96, 248, 115, 248, 96, 211, 55, 248, 96, 248, 93, 214, 228,
-    249, 134, 205, 73, 216, 188, 199, 107, 207, 101, 210, 203, 233, 64, 217,
-    148, 205, 119, 251, 86, 208, 158, 252, 39, 218, 244, 243, 119, 216, 201,
-    211, 13, 198, 2, 223, 159, 198, 2, 210, 212, 235, 8, 113, 223, 156, 234,
-    67, 234, 68, 4, 235, 119, 64, 58, 242, 219, 217, 109, 4, 218, 235, 232,
-    217, 242, 219, 217, 109, 4, 207, 147, 232, 217, 211, 77, 217, 109, 4,
-    207, 147, 232, 217, 211, 77, 217, 109, 4, 218, 235, 232, 217, 209, 17,
-    209, 18, 228, 187, 214, 75, 216, 4, 209, 194, 216, 4, 209, 195, 4, 96,
-    64, 250, 183, 219, 224, 195, 68, 216, 3, 216, 4, 209, 195, 211, 145, 213,
-    44, 216, 4, 209, 193, 251, 87, 4, 249, 76, 247, 132, 247, 133, 4, 232,
-    208, 195, 65, 247, 132, 199, 104, 207, 165, 195, 64, 233, 0, 208, 193,
-    209, 27, 201, 77, 208, 236, 249, 15, 197, 17, 96, 250, 231, 242, 221, 96,
-    23, 118, 211, 77, 243, 11, 250, 231, 242, 221, 96, 23, 118, 211, 77, 243,
-    11, 250, 232, 4, 47, 91, 210, 255, 242, 221, 235, 119, 23, 196, 66, 211,
-    77, 243, 11, 250, 231, 251, 85, 235, 119, 23, 196, 66, 211, 77, 243, 11,
-    250, 231, 130, 248, 26, 113, 137, 248, 26, 113, 201, 235, 4, 247, 125,
-    106, 201, 234, 201, 235, 4, 91, 202, 5, 193, 138, 201, 235, 4, 115, 202,
-    5, 193, 137, 249, 58, 234, 135, 209, 87, 219, 219, 217, 121, 231, 16,
-    206, 203, 217, 121, 231, 16, 219, 35, 4, 223, 129, 210, 34, 242, 219,
-    219, 35, 4, 221, 222, 221, 222, 219, 34, 211, 77, 219, 34, 248, 235, 248,
-    236, 4, 247, 125, 106, 248, 94, 219, 103, 113, 207, 166, 247, 213, 249,
-    147, 4, 118, 64, 58, 234, 95, 4, 118, 64, 58, 211, 105, 4, 233, 216, 87,
-    4, 45, 50, 64, 58, 202, 15, 4, 96, 64, 58, 198, 54, 4, 196, 66, 64, 58,
-    213, 44, 91, 196, 105, 234, 162, 113, 221, 219, 199, 95, 223, 123, 16,
-    40, 8, 6, 219, 174, 223, 123, 16, 40, 8, 2, 219, 174, 223, 123, 16, 40,
-    212, 135, 223, 123, 16, 40, 200, 76, 223, 123, 16, 40, 8, 219, 174, 232,
-    243, 234, 135, 198, 49, 193, 9, 230, 61, 212, 118, 23, 248, 101, 229, 13,
-    209, 118, 216, 88, 199, 105, 238, 197, 249, 111, 202, 136, 209, 60, 201,
-    103, 4, 82, 236, 140, 223, 19, 16, 40, 248, 248, 197, 236, 234, 111, 62,
-    51, 247, 213, 63, 51, 247, 213, 220, 13, 207, 87, 243, 10, 220, 13, 248,
-    115, 243, 10, 220, 13, 211, 55, 237, 32, 220, 13, 248, 115, 237, 32, 2,
-    211, 55, 237, 32, 2, 248, 115, 237, 32, 196, 76, 207, 87, 197, 241, 235,
-    122, 207, 87, 197, 241, 196, 76, 2, 207, 87, 197, 241, 235, 122, 2, 207,
-    87, 197, 241, 110, 50, 203, 151, 63, 243, 10, 116, 50, 203, 151, 63, 243,
-    10, 47, 238, 218, 209, 41, 238, 218, 209, 42, 4, 230, 67, 60, 238, 218,
-    209, 41, 213, 8, 45, 204, 28, 4, 115, 236, 138, 213, 8, 50, 204, 28, 4,
-    115, 236, 138, 16, 40, 217, 50, 246, 242, 63, 8, 238, 217, 88, 8, 238,
-    217, 247, 26, 238, 217, 211, 114, 113, 235, 125, 79, 210, 60, 222, 125,
-    215, 197, 200, 70, 216, 183, 4, 213, 175, 248, 46, 248, 67, 79, 228, 90,
-    242, 223, 233, 104, 91, 211, 162, 242, 223, 233, 104, 105, 211, 162, 242,
-    223, 233, 104, 115, 211, 162, 242, 223, 233, 104, 232, 128, 211, 162,
-    242, 223, 233, 104, 232, 226, 211, 162, 242, 223, 233, 104, 202, 136,
-    211, 162, 242, 223, 233, 104, 203, 247, 211, 162, 242, 223, 233, 104,
-    234, 164, 211, 162, 242, 223, 233, 104, 213, 175, 211, 162, 242, 223,
-    233, 104, 199, 96, 211, 162, 242, 223, 233, 104, 234, 128, 211, 162, 242,
-    223, 233, 104, 197, 38, 211, 162, 242, 223, 233, 104, 211, 97, 242, 223,
-    233, 104, 197, 11, 242, 223, 233, 104, 198, 217, 242, 223, 233, 104, 232,
-    124, 242, 223, 233, 104, 232, 223, 242, 223, 233, 104, 202, 132, 242,
-    223, 233, 104, 203, 246, 242, 223, 233, 104, 234, 163, 242, 223, 233,
-    104, 213, 173, 242, 223, 233, 104, 199, 94, 242, 223, 233, 104, 234, 126,
-    242, 223, 233, 104, 197, 36, 50, 201, 234, 50, 201, 235, 4, 91, 202, 5,
-    193, 138, 50, 201, 235, 4, 115, 202, 5, 193, 137, 247, 246, 247, 247, 4,
-    202, 5, 193, 137, 206, 186, 248, 235, 248, 96, 247, 123, 217, 75, 242,
-    222, 62, 202, 104, 23, 238, 215, 213, 44, 209, 124, 229, 5, 217, 91, 223,
-    163, 247, 222, 200, 212, 219, 165, 202, 90, 211, 57, 201, 191, 237, 221,
-    200, 194, 201, 221, 201, 222, 193, 118, 222, 183, 217, 91, 237, 239, 45,
-    230, 54, 199, 107, 207, 101, 199, 107, 207, 102, 4, 210, 204, 50, 230,
-    54, 199, 107, 207, 101, 63, 198, 34, 199, 106, 62, 198, 34, 199, 106,
-    199, 107, 211, 105, 198, 54, 79, 216, 0, 242, 245, 216, 4, 209, 194, 249,
-    147, 79, 234, 67, 201, 109, 234, 67, 234, 68, 4, 219, 129, 232, 178, 234,
-    67, 210, 35, 139, 201, 109, 234, 67, 219, 102, 210, 133, 62, 208, 133,
-    110, 45, 210, 33, 110, 45, 249, 105, 210, 34, 110, 45, 232, 130, 210, 34,
-    110, 45, 210, 197, 110, 45, 238, 233, 45, 193, 3, 230, 53, 153, 211, 126,
-    230, 54, 56, 207, 147, 230, 54, 4, 232, 248, 201, 211, 207, 18, 207, 147,
-    230, 54, 4, 232, 248, 201, 211, 207, 18, 198, 211, 133, 56, 207, 18, 198,
-    211, 144, 56, 207, 18, 195, 67, 230, 53, 207, 18, 230, 54, 4, 82, 232,
-    253, 233, 204, 207, 147, 230, 54, 4, 210, 107, 248, 210, 82, 23, 206,
-    189, 232, 247, 63, 144, 209, 58, 45, 230, 54, 223, 148, 202, 206, 63, 45,
-    209, 58, 223, 148, 202, 206, 63, 50, 209, 58, 223, 148, 202, 206, 62, 45,
-    209, 58, 223, 148, 202, 206, 62, 50, 209, 58, 223, 148, 62, 45, 209, 58,
-    249, 144, 223, 148, 62, 50, 209, 58, 249, 144, 223, 148, 202, 206, 63,
-    133, 209, 58, 223, 148, 202, 206, 63, 144, 209, 58, 223, 148, 202, 206,
-    62, 133, 209, 58, 223, 148, 202, 206, 62, 144, 209, 58, 223, 148, 62,
-    133, 209, 58, 249, 144, 223, 148, 62, 144, 209, 58, 249, 144, 223, 148,
-    62, 229, 223, 237, 78, 239, 59, 221, 221, 23, 215, 181, 115, 214, 84,
-    239, 58, 208, 209, 209, 71, 247, 142, 62, 230, 17, 203, 103, 232, 191,
-    236, 220, 63, 230, 17, 203, 103, 232, 191, 236, 220, 202, 32, 203, 103,
-    232, 191, 236, 220, 199, 182, 247, 84, 193, 55, 221, 220, 91, 247, 214,
-    215, 181, 105, 247, 214, 215, 181, 115, 247, 214, 215, 181, 198, 24, 39,
-    209, 249, 239, 59, 230, 17, 236, 220, 205, 76, 208, 210, 228, 20, 233,
-    64, 228, 20, 211, 60, 236, 227, 228, 20, 236, 168, 4, 199, 53, 236, 168,
-    4, 199, 54, 23, 209, 177, 236, 168, 4, 209, 177, 232, 114, 4, 209, 177,
-    232, 114, 4, 198, 150, 232, 114, 4, 251, 133, 192, 235, 62, 232, 171,
-    232, 171, 211, 77, 232, 171, 247, 101, 141, 236, 204, 247, 101, 233, 7,
-    248, 62, 233, 7, 247, 155, 234, 105, 213, 6, 234, 105, 213, 7, 210, 204,
-    234, 105, 213, 7, 210, 210, 213, 6, 213, 7, 210, 204, 213, 7, 210, 210,
-    234, 105, 236, 167, 234, 105, 210, 204, 234, 105, 210, 202, 236, 167,
-    210, 204, 210, 202, 193, 148, 201, 218, 213, 7, 210, 210, 201, 218, 247,
-    141, 210, 210, 237, 78, 193, 65, 216, 38, 217, 22, 211, 2, 242, 221, 50,
-    23, 45, 204, 28, 250, 231, 247, 125, 192, 235, 223, 154, 232, 163, 202,
-    116, 113, 237, 134, 232, 163, 202, 116, 113, 239, 60, 39, 221, 222, 206,
-    140, 214, 75, 210, 205, 4, 47, 199, 53, 201, 67, 243, 136, 238, 15, 221,
-    78, 219, 96, 201, 233, 229, 236, 223, 163, 202, 187, 115, 207, 120, 58,
-    115, 207, 120, 60, 115, 207, 120, 219, 224, 115, 207, 120, 183, 45, 201,
-    230, 248, 8, 50, 201, 230, 248, 8, 105, 201, 230, 248, 7, 115, 201, 230,
-    248, 7, 45, 198, 231, 248, 8, 50, 198, 231, 248, 8, 45, 251, 119, 248, 8,
-    50, 251, 119, 248, 8, 215, 210, 248, 8, 219, 130, 215, 210, 248, 8, 219,
-    130, 215, 209, 249, 107, 111, 4, 249, 106, 249, 107, 27, 192, 235, 249,
-    107, 111, 4, 27, 192, 235, 249, 107, 28, 27, 192, 235, 249, 107, 111, 4,
-    28, 27, 192, 235, 156, 243, 126, 77, 249, 107, 111, 4, 28, 243, 125, 193,
-    18, 217, 71, 215, 186, 232, 81, 198, 85, 198, 30, 201, 92, 79, 219, 144,
-    202, 188, 79, 223, 20, 215, 167, 230, 196, 233, 103, 230, 196, 233, 104,
-    4, 202, 64, 233, 185, 233, 104, 4, 199, 126, 79, 222, 185, 202, 64, 233,
-    104, 4, 211, 77, 215, 179, 202, 64, 233, 104, 4, 211, 77, 215, 180, 23,
-    202, 64, 233, 185, 202, 64, 233, 104, 4, 211, 77, 215, 180, 23, 242, 87,
-    200, 143, 202, 64, 233, 104, 4, 211, 77, 215, 180, 23, 198, 171, 233,
-    185, 202, 64, 233, 104, 4, 230, 66, 202, 64, 233, 104, 4, 228, 186, 193,
-    57, 233, 103, 202, 64, 233, 104, 4, 202, 64, 233, 185, 233, 104, 205,
-    109, 237, 114, 232, 161, 207, 61, 233, 103, 202, 64, 233, 104, 4, 229,
-    222, 233, 185, 202, 64, 233, 104, 4, 200, 194, 202, 63, 233, 103, 214,
-    82, 233, 103, 233, 206, 233, 103, 196, 111, 233, 103, 233, 104, 4, 242,
-    87, 200, 143, 210, 26, 233, 103, 239, 51, 233, 103, 239, 52, 233, 103,
-    221, 121, 233, 103, 233, 104, 198, 214, 42, 221, 122, 221, 121, 233, 104,
-    4, 202, 64, 233, 185, 221, 121, 233, 104, 4, 242, 219, 233, 185, 233,
-    104, 4, 201, 12, 198, 61, 233, 104, 4, 201, 12, 198, 62, 23, 193, 57,
-    233, 193, 233, 104, 4, 201, 12, 198, 62, 23, 198, 171, 233, 185, 236,
-    228, 233, 103, 193, 16, 233, 103, 251, 111, 233, 103, 209, 6, 233, 103,
-    238, 199, 233, 103, 209, 253, 233, 103, 233, 104, 4, 219, 7, 79, 197,
-    217, 236, 228, 247, 218, 207, 61, 233, 103, 232, 92, 233, 104, 4, 211,
-    77, 215, 179, 251, 109, 233, 103, 233, 57, 233, 103, 193, 119, 233, 103,
-    202, 91, 233, 103, 198, 130, 233, 103, 230, 197, 233, 103, 218, 245, 238,
-    199, 233, 103, 233, 104, 4, 211, 77, 215, 179, 228, 130, 233, 103, 233,
-    104, 4, 211, 77, 215, 180, 23, 242, 87, 200, 143, 233, 104, 205, 78, 223,
-    163, 233, 58, 250, 190, 233, 103, 232, 183, 233, 103, 202, 92, 233, 103,
-    236, 195, 233, 103, 233, 104, 193, 51, 215, 179, 233, 104, 4, 216, 216,
-    217, 35, 230, 196, 247, 79, 233, 104, 4, 202, 64, 233, 185, 247, 79, 233,
-    104, 4, 199, 126, 79, 222, 185, 202, 64, 247, 79, 233, 104, 4, 211, 77,
-    215, 179, 202, 64, 247, 79, 233, 104, 4, 229, 222, 233, 185, 247, 79,
-    233, 104, 4, 193, 1, 202, 65, 221, 121, 247, 79, 233, 104, 4, 242, 219,
-    233, 185, 209, 6, 247, 79, 233, 103, 238, 199, 247, 79, 233, 103, 193,
-    119, 247, 79, 233, 103, 202, 84, 232, 92, 233, 103, 202, 84, 202, 64,
-    233, 103, 196, 72, 233, 103, 233, 104, 4, 206, 138, 233, 185, 233, 104,
-    4, 213, 44, 230, 244, 231, 132, 233, 104, 4, 211, 126, 231, 132, 209,
-    251, 248, 68, 237, 129, 205, 49, 215, 225, 229, 226, 215, 225, 201, 236,
-    215, 225, 230, 20, 209, 251, 207, 145, 91, 230, 53, 209, 251, 207, 145,
-    248, 80, 230, 29, 223, 163, 247, 28, 209, 251, 232, 91, 209, 251, 4, 209,
-    6, 233, 103, 209, 251, 4, 232, 172, 230, 28, 186, 193, 105, 209, 58, 219,
-    233, 202, 2, 193, 105, 209, 58, 219, 233, 186, 234, 204, 209, 58, 219,
-    233, 202, 2, 234, 204, 209, 58, 219, 233, 153, 186, 193, 105, 209, 58,
-    219, 233, 153, 202, 2, 193, 105, 209, 58, 219, 233, 153, 186, 234, 204,
-    209, 58, 219, 233, 153, 202, 2, 234, 204, 209, 58, 219, 233, 186, 193,
-    105, 209, 58, 195, 48, 219, 233, 202, 2, 193, 105, 209, 58, 195, 48, 219,
-    233, 186, 234, 204, 209, 58, 195, 48, 219, 233, 202, 2, 234, 204, 209,
-    58, 195, 48, 219, 233, 88, 186, 193, 105, 209, 58, 195, 48, 219, 233, 88,
-    202, 2, 193, 105, 209, 58, 195, 48, 219, 233, 88, 186, 234, 204, 209, 58,
-    195, 48, 219, 233, 88, 202, 2, 234, 204, 209, 58, 195, 48, 219, 233, 186,
-    193, 105, 209, 58, 248, 4, 202, 2, 193, 105, 209, 58, 248, 4, 186, 234,
-    204, 209, 58, 248, 4, 202, 2, 234, 204, 209, 58, 248, 4, 88, 186, 193,
-    105, 209, 58, 248, 4, 88, 202, 2, 193, 105, 209, 58, 248, 4, 88, 186,
-    234, 204, 209, 58, 248, 4, 88, 202, 2, 234, 204, 209, 58, 248, 4, 229, 4,
-    208, 6, 51, 211, 42, 229, 4, 208, 6, 51, 211, 43, 223, 163, 62, 201, 190,
-    202, 25, 208, 6, 51, 211, 42, 202, 25, 208, 6, 51, 211, 43, 223, 163, 62,
-    201, 190, 118, 206, 146, 196, 66, 206, 146, 96, 206, 146, 235, 119, 206,
-    146, 27, 34, 234, 0, 211, 42, 88, 27, 34, 234, 0, 211, 42, 34, 211, 77,
-    234, 0, 211, 42, 88, 34, 211, 77, 234, 0, 211, 42, 88, 251, 138, 211, 42,
-    200, 146, 251, 138, 211, 42, 49, 88, 55, 153, 242, 75, 207, 252, 87, 211,
-    42, 49, 88, 55, 242, 75, 207, 252, 87, 211, 42, 49, 88, 130, 55, 242, 75,
-    207, 252, 87, 211, 42, 88, 223, 103, 211, 42, 49, 223, 103, 211, 42, 88,
-    49, 223, 103, 211, 42, 195, 83, 88, 202, 23, 195, 83, 88, 207, 19, 202,
-    23, 243, 124, 248, 107, 207, 19, 243, 124, 248, 107, 206, 146, 229, 205,
-    201, 85, 219, 32, 207, 152, 247, 102, 229, 131, 198, 16, 229, 131, 198,
-    17, 4, 247, 249, 213, 13, 198, 16, 216, 158, 156, 207, 153, 201, 93, 198,
-    14, 198, 15, 247, 102, 247, 223, 211, 101, 247, 223, 197, 212, 247, 224,
-    201, 63, 216, 42, 251, 142, 232, 244, 234, 87, 209, 50, 247, 102, 211,
-    101, 209, 50, 247, 102, 199, 155, 211, 101, 199, 155, 250, 150, 211, 101,
-    250, 150, 207, 94, 195, 145, 237, 110, 197, 203, 250, 225, 218, 254, 198,
-    23, 215, 218, 215, 185, 207, 151, 200, 164, 207, 151, 215, 185, 247, 154,
-    252, 11, 198, 13, 203, 65, 206, 112, 201, 228, 228, 241, 198, 20, 219,
-    132, 81, 198, 20, 219, 132, 239, 37, 56, 209, 50, 247, 86, 207, 12, 219,
-    132, 197, 238, 232, 218, 211, 105, 209, 19, 236, 144, 213, 44, 234, 73,
-    56, 202, 62, 113, 213, 44, 202, 62, 113, 208, 132, 219, 84, 223, 163,
-    223, 50, 209, 108, 113, 236, 175, 213, 12, 219, 84, 113, 209, 13, 193,
-    144, 113, 213, 28, 193, 144, 113, 248, 184, 213, 44, 248, 183, 248, 182,
-    215, 185, 248, 182, 210, 51, 213, 44, 210, 50, 243, 85, 238, 209, 216,
-    182, 113, 193, 32, 113, 207, 28, 249, 149, 113, 198, 86, 193, 144, 242,
-    216, 203, 20, 249, 61, 249, 59, 210, 91, 239, 21, 238, 156, 249, 126,
-    242, 246, 45, 218, 215, 197, 242, 4, 206, 113, 239, 0, 208, 196, 56, 47,
-    223, 137, 202, 3, 248, 59, 113, 231, 27, 113, 238, 248, 23, 220, 25, 202,
-    92, 252, 57, 203, 43, 249, 125, 248, 234, 248, 235, 249, 2, 209, 108, 79,
-    193, 15, 211, 159, 56, 203, 43, 197, 213, 201, 8, 210, 201, 229, 127,
-    199, 98, 228, 129, 234, 130, 193, 54, 209, 96, 202, 87, 193, 93, 206,
-    189, 247, 233, 230, 62, 23, 193, 9, 203, 78, 211, 132, 235, 94, 215, 189,
-    207, 152, 198, 25, 215, 192, 248, 106, 196, 76, 216, 54, 251, 223, 196,
-    76, 251, 223, 196, 76, 2, 251, 223, 2, 251, 223, 213, 17, 251, 223, 251,
-    224, 237, 93, 251, 224, 250, 238, 205, 118, 211, 101, 232, 244, 234, 87,
-    237, 22, 219, 32, 210, 95, 203, 65, 205, 83, 215, 192, 205, 83, 247, 113,
-    202, 94, 232, 178, 205, 113, 202, 111, 250, 152, 206, 243, 209, 178, 197,
-    203, 206, 139, 202, 112, 160, 16, 40, 208, 2, 160, 16, 40, 251, 225, 160,
-    16, 40, 232, 243, 160, 16, 40, 234, 207, 160, 16, 40, 193, 143, 160, 16,
-    40, 251, 35, 160, 16, 40, 251, 36, 207, 81, 160, 16, 40, 251, 36, 207,
-    80, 160, 16, 40, 251, 36, 195, 31, 160, 16, 40, 251, 36, 195, 30, 160,
-    16, 40, 195, 45, 160, 16, 40, 195, 44, 160, 16, 40, 195, 43, 160, 16, 40,
-    200, 205, 160, 16, 40, 209, 203, 200, 205, 160, 16, 40, 62, 200, 205,
-    160, 16, 40, 216, 181, 200, 236, 160, 16, 40, 216, 181, 200, 235, 160,
-    16, 40, 216, 181, 200, 234, 160, 16, 40, 243, 13, 160, 16, 40, 205, 158,
-    160, 16, 40, 213, 161, 160, 16, 40, 195, 28, 160, 16, 40, 195, 27, 160,
-    16, 40, 206, 148, 205, 158, 160, 16, 40, 206, 148, 205, 157, 160, 16, 40,
-    230, 250, 160, 16, 40, 202, 184, 160, 16, 40, 223, 74, 211, 49, 160, 16,
-    40, 223, 74, 211, 48, 160, 16, 40, 238, 222, 79, 223, 73, 160, 16, 40,
-    207, 77, 79, 223, 73, 160, 16, 40, 239, 12, 211, 49, 160, 16, 40, 223,
-    72, 211, 49, 160, 16, 40, 200, 237, 79, 239, 11, 160, 16, 40, 238, 222,
-    79, 239, 11, 160, 16, 40, 238, 222, 79, 239, 10, 160, 16, 40, 239, 12,
-    251, 79, 160, 16, 40, 205, 159, 79, 239, 12, 251, 79, 160, 16, 40, 200,
-    237, 79, 205, 159, 79, 239, 11, 160, 16, 40, 195, 139, 160, 16, 40, 198,
-    143, 211, 49, 160, 16, 40, 219, 237, 211, 49, 160, 16, 40, 251, 78, 211,
-    49, 160, 16, 40, 200, 237, 79, 251, 77, 160, 16, 40, 205, 159, 79, 251,
-    77, 160, 16, 40, 200, 237, 79, 205, 159, 79, 251, 77, 160, 16, 40, 195,
-    46, 79, 251, 77, 160, 16, 40, 207, 77, 79, 251, 77, 160, 16, 40, 207, 77,
-    79, 251, 76, 160, 16, 40, 207, 76, 160, 16, 40, 207, 75, 160, 16, 40,
-    207, 74, 160, 16, 40, 207, 73, 160, 16, 40, 251, 177, 160, 16, 40, 251,
-    176, 160, 16, 40, 217, 61, 160, 16, 40, 205, 168, 160, 16, 40, 250, 230,
-    160, 16, 40, 207, 105, 160, 16, 40, 207, 104, 160, 16, 40, 250, 154, 160,
-    16, 40, 248, 150, 211, 49, 160, 16, 40, 199, 177, 160, 16, 40, 199, 176,
-    160, 16, 40, 208, 8, 219, 121, 160, 16, 40, 248, 87, 160, 16, 40, 248,
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-    160, 16, 40, 201, 214, 160, 16, 40, 198, 141, 160, 16, 40, 230, 158, 160,
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-    221, 219, 17, 169, 221, 219, 17, 175, 221, 219, 17, 171, 221, 219, 17,
-    178, 8, 6, 1, 42, 4, 217, 147, 23, 230, 210, 8, 2, 1, 42, 4, 217, 147,
-    23, 230, 210, 8, 6, 1, 228, 74, 4, 217, 147, 23, 230, 210, 8, 2, 1, 228,
-    74, 4, 217, 147, 23, 230, 210, 8, 6, 1, 126, 4, 217, 147, 23, 230, 210,
-    8, 2, 1, 126, 4, 217, 147, 23, 230, 210, 8, 6, 1, 235, 15, 4, 81, 219,
-    113, 60, 8, 2, 1, 235, 15, 4, 81, 219, 113, 60, 8, 6, 1, 235, 15, 4, 81,
-    219, 113, 248, 233, 23, 230, 210, 8, 2, 1, 235, 15, 4, 81, 219, 113, 248,
-    233, 23, 230, 210, 8, 6, 1, 235, 15, 4, 81, 219, 113, 248, 233, 23, 252,
-    46, 8, 2, 1, 235, 15, 4, 81, 219, 113, 248, 233, 23, 252, 46, 8, 6, 1,
-    187, 4, 81, 219, 113, 60, 8, 2, 1, 187, 4, 81, 219, 113, 60, 8, 6, 1,
-    187, 4, 81, 219, 113, 248, 233, 23, 230, 210, 8, 2, 1, 187, 4, 81, 219,
-    113, 248, 233, 23, 230, 210, 8, 6, 1, 187, 4, 81, 219, 113, 248, 233, 23,
-    252, 46, 8, 2, 1, 187, 4, 81, 219, 113, 248, 233, 23, 252, 46, 8, 6, 1,
-    206, 9, 4, 81, 219, 113, 60, 8, 2, 1, 206, 9, 4, 81, 219, 113, 60, 8, 6,
-    1, 235, 15, 4, 243, 2, 23, 217, 146, 8, 2, 1, 235, 15, 4, 243, 2, 23,
-    217, 146, 8, 6, 1, 235, 15, 4, 243, 2, 23, 247, 92, 8, 2, 1, 235, 15, 4,
-    243, 2, 23, 247, 92, 8, 2, 1, 228, 74, 4, 75, 93, 23, 252, 46, 8, 2, 1,
-    214, 71, 4, 198, 153, 58, 8, 6, 1, 42, 4, 211, 139, 23, 252, 46, 8, 2, 1,
-    42, 4, 211, 139, 23, 252, 46, 8, 6, 1, 42, 4, 211, 139, 23, 198, 152, 8,
-    2, 1, 42, 4, 211, 139, 23, 198, 152, 8, 6, 1, 235, 15, 4, 211, 139, 23,
-    252, 46, 8, 2, 1, 235, 15, 4, 211, 139, 23, 252, 46, 8, 6, 1, 235, 15, 4,
-    211, 139, 23, 198, 152, 8, 2, 1, 235, 15, 4, 211, 139, 23, 198, 152, 8,
-    6, 1, 235, 15, 4, 75, 93, 23, 252, 46, 8, 2, 1, 235, 15, 4, 75, 93, 23,
-    252, 46, 8, 6, 1, 235, 15, 4, 75, 93, 23, 198, 152, 8, 2, 1, 235, 15, 4,
-    75, 93, 23, 198, 152, 8, 2, 1, 228, 74, 4, 75, 93, 23, 230, 210, 8, 2, 1,
-    228, 74, 4, 75, 93, 23, 198, 152, 8, 6, 1, 228, 74, 4, 211, 139, 23, 252,
-    46, 8, 2, 1, 228, 74, 4, 211, 139, 23, 75, 93, 23, 252, 46, 8, 6, 1, 228,
-    74, 4, 211, 139, 23, 198, 152, 8, 2, 1, 228, 74, 4, 211, 139, 23, 75, 93,
-    23, 198, 152, 8, 6, 1, 223, 36, 4, 198, 152, 8, 2, 1, 223, 36, 4, 75, 93,
-    23, 198, 152, 8, 6, 1, 220, 143, 4, 198, 152, 8, 2, 1, 220, 143, 4, 198,
-    152, 8, 6, 1, 218, 169, 4, 198, 152, 8, 2, 1, 218, 169, 4, 198, 152, 8,
-    6, 1, 207, 222, 4, 198, 152, 8, 2, 1, 207, 222, 4, 198, 152, 8, 6, 1,
-    126, 4, 211, 139, 23, 252, 46, 8, 2, 1, 126, 4, 211, 139, 23, 252, 46, 8,
-    6, 1, 126, 4, 211, 139, 23, 198, 152, 8, 2, 1, 126, 4, 211, 139, 23, 198,
-    152, 8, 6, 1, 126, 4, 217, 147, 23, 252, 46, 8, 2, 1, 126, 4, 217, 147,
-    23, 252, 46, 8, 6, 1, 126, 4, 217, 147, 23, 198, 152, 8, 2, 1, 126, 4,
-    217, 147, 23, 198, 152, 8, 2, 1, 252, 26, 4, 230, 210, 8, 2, 1, 211, 77,
-    187, 4, 230, 210, 8, 2, 1, 211, 77, 187, 4, 252, 46, 8, 2, 1, 153, 196,
-    13, 4, 230, 210, 8, 2, 1, 153, 196, 13, 4, 252, 46, 8, 2, 1, 205, 87, 4,
-    230, 210, 8, 2, 1, 205, 87, 4, 252, 46, 8, 2, 1, 228, 250, 205, 87, 4,
-    230, 210, 8, 2, 1, 228, 250, 205, 87, 4, 252, 46, 9, 204, 7, 99, 4, 230,
-    58, 93, 4, 251, 192, 9, 204, 7, 99, 4, 230, 58, 93, 4, 193, 133, 9, 204,
-    7, 99, 4, 230, 58, 93, 4, 131, 217, 99, 9, 204, 7, 99, 4, 230, 58, 93, 4,
-    211, 151, 9, 204, 7, 99, 4, 230, 58, 93, 4, 66, 9, 204, 7, 99, 4, 230,
-    58, 93, 4, 191, 225, 9, 204, 7, 99, 4, 230, 58, 93, 4, 71, 9, 204, 7, 99,
-    4, 230, 58, 93, 4, 252, 25, 9, 204, 7, 213, 25, 4, 222, 4, 100, 204, 7,
-    40, 1, 208, 96, 100, 204, 7, 40, 1, 221, 193, 100, 204, 7, 40, 1, 231,
-    66, 100, 204, 7, 40, 1, 191, 123, 100, 204, 7, 40, 1, 237, 180, 100, 204,
-    7, 40, 1, 207, 6, 100, 204, 7, 40, 1, 233, 109, 100, 204, 7, 40, 1, 191,
-    175, 248, 225, 204, 7, 40, 1, 206, 109, 248, 225, 204, 7, 40, 1, 207, 6,
-    248, 225, 204, 7, 40, 1, 191, 175, 230, 144, 204, 7, 40, 1, 219, 73, 230,
-    144, 204, 7, 40, 1, 203, 165, 230, 144, 204, 7, 40, 1, 221, 193, 230,
-    144, 204, 7, 40, 1, 231, 66, 230, 144, 204, 7, 40, 1, 191, 123, 230, 144,
-    204, 7, 40, 1, 233, 109, 211, 45, 204, 7, 40, 1, 206, 109, 211, 45, 204,
-    7, 40, 1, 207, 6, 248, 225, 1, 221, 187, 44, 120, 222, 152, 44, 120, 214,
-    70, 44, 120, 247, 193, 44, 120, 212, 103, 44, 120, 197, 135, 44, 120,
-    213, 80, 44, 120, 200, 43, 44, 120, 215, 61, 44, 120, 210, 236, 44, 120,
-    218, 168, 44, 120, 192, 159, 44, 120, 146, 44, 120, 172, 44, 120, 196,
-    12, 44, 120, 219, 63, 44, 120, 219, 74, 44, 120, 206, 110, 44, 120, 213,
-    62, 44, 120, 223, 35, 44, 120, 203, 167, 44, 120, 201, 178, 44, 120, 206,
-    8, 44, 120, 230, 116, 44, 120, 220, 247, 44, 5, 222, 127, 44, 5, 221,
-    166, 44, 5, 221, 145, 44, 5, 220, 232, 44, 5, 220, 187, 44, 5, 222, 22,
-    44, 5, 222, 13, 44, 5, 222, 102, 44, 5, 221, 67, 44, 5, 221, 41, 44, 5,
-    222, 42, 44, 5, 214, 67, 44, 5, 214, 16, 44, 5, 214, 12, 44, 5, 213, 237,
-    44, 5, 213, 228, 44, 5, 214, 55, 44, 5, 214, 53, 44, 5, 214, 64, 44, 5,
-    213, 249, 44, 5, 213, 244, 44, 5, 214, 57, 44, 5, 247, 159, 44, 5, 243,
-    29, 44, 5, 243, 19, 44, 5, 238, 195, 44, 5, 238, 153, 44, 5, 247, 42, 44,
-    5, 247, 34, 44, 5, 247, 148, 44, 5, 242, 99, 44, 5, 239, 18, 44, 5, 247,
-    76, 44, 5, 212, 100, 44, 5, 212, 81, 44, 5, 212, 75, 44, 5, 212, 58, 44,
-    5, 212, 50, 44, 5, 212, 90, 44, 5, 212, 89, 44, 5, 212, 97, 44, 5, 212,
-    65, 44, 5, 212, 62, 44, 5, 212, 93, 44, 5, 197, 131, 44, 5, 197, 111, 44,
-    5, 197, 110, 44, 5, 197, 99, 44, 5, 197, 96, 44, 5, 197, 127, 44, 5, 197,
-    126, 44, 5, 197, 130, 44, 5, 197, 109, 44, 5, 197, 108, 44, 5, 197, 129,
-    44, 5, 213, 78, 44, 5, 213, 64, 44, 5, 213, 63, 44, 5, 213, 47, 44, 5,
-    213, 46, 44, 5, 213, 74, 44, 5, 213, 73, 44, 5, 213, 77, 44, 5, 213, 49,
-    44, 5, 213, 48, 44, 5, 213, 76, 44, 5, 199, 245, 44, 5, 198, 193, 44, 5,
-    198, 170, 44, 5, 197, 94, 44, 5, 197, 49, 44, 5, 199, 145, 44, 5, 199,
-    121, 44, 5, 199, 217, 44, 5, 159, 44, 5, 198, 59, 44, 5, 199, 166, 44, 5,
-    214, 250, 44, 5, 213, 219, 44, 5, 213, 186, 44, 5, 212, 178, 44, 5, 212,
-    115, 44, 5, 214, 121, 44, 5, 214, 110, 44, 5, 214, 236, 44, 5, 213, 43,
-    44, 5, 213, 26, 44, 5, 214, 205, 44, 5, 210, 220, 44, 5, 209, 185, 44, 5,
-    209, 145, 44, 5, 208, 165, 44, 5, 208, 128, 44, 5, 210, 63, 44, 5, 210,
-    49, 44, 5, 210, 198, 44, 5, 209, 73, 44, 5, 209, 37, 44, 5, 210, 80, 44,
-    5, 217, 151, 44, 5, 216, 100, 44, 5, 216, 61, 44, 5, 215, 155, 44, 5,
-    215, 93, 44, 5, 216, 232, 44, 5, 216, 211, 44, 5, 217, 112, 44, 5, 216,
-    12, 44, 5, 215, 211, 44, 5, 217, 25, 44, 5, 192, 140, 44, 5, 192, 33, 44,
-    5, 192, 23, 44, 5, 191, 225, 44, 5, 191, 188, 44, 5, 192, 80, 44, 5, 192,
-    77, 44, 5, 192, 119, 44, 5, 192, 12, 44, 5, 191, 246, 44, 5, 192, 91, 44,
-    5, 207, 178, 44, 5, 207, 1, 44, 5, 206, 195, 44, 5, 206, 68, 44, 5, 206,
-    29, 44, 5, 207, 113, 44, 5, 207, 84, 44, 5, 207, 156, 44, 5, 206, 162,
-    44, 5, 206, 134, 44, 5, 207, 125, 44, 5, 220, 125, 44, 5, 219, 146, 44,
-    5, 219, 128, 44, 5, 218, 225, 44, 5, 218, 194, 44, 5, 219, 238, 44, 5,
-    219, 228, 44, 5, 220, 96, 44, 5, 219, 43, 44, 5, 219, 8, 44, 5, 220, 0,
-    44, 5, 195, 187, 44, 5, 195, 69, 44, 5, 195, 51, 44, 5, 193, 249, 44, 5,
-    193, 241, 44, 5, 195, 153, 44, 5, 195, 148, 44, 5, 195, 183, 44, 5, 195,
-    24, 44, 5, 195, 8, 44, 5, 195, 160, 44, 5, 219, 61, 44, 5, 219, 56, 44,
-    5, 219, 55, 44, 5, 219, 52, 44, 5, 219, 51, 44, 5, 219, 58, 44, 5, 219,
-    57, 44, 5, 219, 60, 44, 5, 219, 54, 44, 5, 219, 53, 44, 5, 219, 59, 44,
-    5, 219, 72, 44, 5, 219, 65, 44, 5, 219, 64, 44, 5, 219, 48, 44, 5, 219,
-    47, 44, 5, 219, 68, 44, 5, 219, 67, 44, 5, 219, 71, 44, 5, 219, 50, 44,
-    5, 219, 49, 44, 5, 219, 69, 44, 5, 206, 108, 44, 5, 206, 97, 44, 5, 206,
-    96, 44, 5, 206, 89, 44, 5, 206, 82, 44, 5, 206, 104, 44, 5, 206, 103, 44,
-    5, 206, 107, 44, 5, 206, 95, 44, 5, 206, 94, 44, 5, 206, 106, 44, 5, 213,
-    60, 44, 5, 213, 55, 44, 5, 213, 54, 44, 5, 213, 51, 44, 5, 213, 50, 44,
-    5, 213, 57, 44, 5, 213, 56, 44, 5, 213, 59, 44, 5, 213, 53, 44, 5, 213,
-    52, 44, 5, 213, 58, 44, 5, 223, 31, 44, 5, 222, 244, 44, 5, 222, 236, 44,
-    5, 222, 182, 44, 5, 222, 162, 44, 5, 223, 10, 44, 5, 223, 8, 44, 5, 223,
-    25, 44, 5, 222, 201, 44, 5, 222, 191, 44, 5, 223, 17, 44, 5, 203, 160,
-    44, 5, 203, 81, 44, 5, 203, 76, 44, 5, 203, 5, 44, 5, 202, 243, 44, 5,
-    203, 113, 44, 5, 203, 111, 44, 5, 203, 148, 44, 5, 203, 56, 44, 5, 203,
-    48, 44, 5, 203, 122, 44, 5, 201, 174, 44, 5, 201, 142, 44, 5, 201, 138,
-    44, 5, 201, 129, 44, 5, 201, 126, 44, 5, 201, 148, 44, 5, 201, 147, 44,
-    5, 201, 173, 44, 5, 201, 134, 44, 5, 201, 133, 44, 5, 201, 150, 44, 5,
-    205, 197, 44, 5, 202, 222, 44, 5, 202, 193, 44, 5, 201, 4, 44, 5, 200,
-    160, 44, 5, 205, 68, 44, 5, 205, 50, 44, 5, 205, 181, 44, 5, 202, 46, 44,
-    5, 202, 16, 44, 5, 205, 114, 44, 5, 230, 91, 44, 5, 229, 158, 44, 5, 229,
-    130, 44, 5, 228, 159, 44, 5, 228, 128, 44, 5, 229, 245, 44, 5, 229, 215,
-    44, 5, 230, 80, 44, 5, 229, 23, 44, 5, 228, 252, 44, 5, 230, 2, 44, 5,
-    220, 246, 44, 5, 220, 245, 44, 5, 220, 240, 44, 5, 220, 239, 44, 5, 220,
-    236, 44, 5, 220, 235, 44, 5, 220, 242, 44, 5, 220, 241, 44, 5, 220, 244,
-    44, 5, 220, 238, 44, 5, 220, 237, 44, 5, 220, 243, 44, 5, 203, 14, 166,
-    120, 3, 192, 105, 166, 120, 3, 207, 144, 166, 120, 3, 207, 50, 101, 1,
-    196, 224, 95, 120, 3, 242, 91, 155, 95, 120, 3, 242, 91, 221, 215, 95,
-    120, 3, 242, 91, 221, 67, 95, 120, 3, 242, 91, 221, 183, 95, 120, 3, 242,
-    91, 213, 249, 95, 120, 3, 242, 91, 247, 160, 95, 120, 3, 242, 91, 247, 1,
-    95, 120, 3, 242, 91, 242, 99, 95, 120, 3, 242, 91, 243, 68, 95, 120, 3,
-    242, 91, 212, 65, 95, 120, 3, 242, 91, 238, 32, 95, 120, 3, 242, 91, 197,
-    120, 95, 120, 3, 242, 91, 236, 174, 95, 120, 3, 242, 91, 197, 115, 95,
-    120, 3, 242, 91, 180, 95, 120, 3, 242, 91, 190, 190, 95, 120, 3, 242, 91,
-    199, 49, 95, 120, 3, 242, 91, 159, 95, 120, 3, 242, 91, 198, 241, 95,
-    120, 3, 242, 91, 213, 43, 95, 120, 3, 242, 91, 249, 153, 95, 120, 3, 242,
-    91, 209, 228, 95, 120, 3, 242, 91, 209, 73, 95, 120, 3, 242, 91, 209,
-    199, 95, 120, 3, 242, 91, 216, 12, 95, 120, 3, 242, 91, 192, 12, 95, 120,
-    3, 242, 91, 206, 162, 95, 120, 3, 242, 91, 219, 43, 95, 120, 3, 242, 91,
-    195, 24, 95, 120, 3, 242, 91, 203, 165, 95, 120, 3, 242, 91, 201, 175,
-    95, 120, 3, 242, 91, 188, 95, 120, 3, 242, 91, 140, 95, 120, 3, 242, 91,
-    173, 95, 18, 3, 242, 91, 208, 96, 95, 223, 149, 18, 3, 242, 91, 208, 33,
-    95, 223, 149, 18, 3, 242, 91, 206, 17, 95, 223, 149, 18, 3, 242, 91, 206,
-    10, 95, 223, 149, 18, 3, 242, 91, 208, 75, 95, 18, 3, 211, 113, 95, 18,
-    3, 252, 167, 229, 120, 1, 248, 181, 214, 68, 229, 120, 1, 248, 181, 214,
-    16, 229, 120, 1, 248, 181, 213, 237, 229, 120, 1, 248, 181, 214, 55, 229,
-    120, 1, 248, 181, 213, 249, 72, 1, 248, 181, 214, 68, 72, 1, 248, 181,
-    214, 16, 72, 1, 248, 181, 213, 237, 72, 1, 248, 181, 214, 55, 72, 1, 248,
-    181, 213, 249, 72, 1, 251, 228, 247, 42, 72, 1, 251, 228, 197, 94, 72, 1,
-    251, 228, 159, 72, 1, 251, 228, 210, 236, 52, 1, 233, 200, 233, 199, 239,
-    26, 163, 164, 52, 1, 233, 199, 233, 200, 239, 26, 163, 164,
+static const unsigned int dawg_pos_to_codepoint[] = {
+    8448, 129687, 983053, 983052, 180, 10655, 8301, 8299, 9190, 125185,
+    125197, 125214, 125208, 125204, 125187, 125201, 125216, 125213, 125200,
+    125211, 125209, 125189, 125217, 125207, 125186, 125205, 125215, 125184,
+    125191, 125188, 125198, 125202, 125199, 125210, 125190, 125194, 125206,
+    125192, 125212, 125193, 125195, 125196, 125203, 125256, 125219, 125231,
+    125248, 125242, 125238, 125221, 125235, 125250, 125247, 125234, 125245,
+    125243, 125223, 125251, 125241, 125220, 125239, 125249, 125218, 125225,
+    125222, 125232, 125236, 125233, 125244, 125224, 125228, 125240, 125226,
+    125246, 125227, 125229, 125230, 125237, 125257, 125254, 125278, 125279,
+    125259, 125258, 125255, 125252, 125253, 125269, 125268, 125271, 125270,
+    125267, 125266, 125264, 125273, 125265, 125272, 11237, 127903, 129657,
+    8449, 129489, 9772, 65852, 65853, 65854, 65855, 65848, 65851, 65849,
+    65850, 65847, 65792, 65793, 65806, 65815, 65842, 65824, 65833, 65812,
+    65839, 65803, 65821, 65830, 65811, 65838, 65802, 65820, 65829, 65807,
+    65816, 65843, 65825, 65834, 65805, 65814, 65841, 65823, 65832, 65804,
+    65813, 65840, 65822, 65831, 65810, 65837, 65801, 65819, 65828, 65809,
+    65836, 65800, 65818, 65827, 65808, 65835, 65799, 65817, 65826, 65794,
+    128673, 71455, 71453, 71454, 71442, 71450, 71446, 71429, 71492, 71491,
+    71444, 71443, 71490, 71489, 71436, 71428, 71494, 71438, 71426, 71493,
+    71440, 71427, 71448, 71432, 71435, 71488, 71447, 71445, 71449, 71434,
+    71425, 71424, 71431, 71430, 71441, 71433, 71437, 71439, 71484, 71485,
+    71467, 71486, 71487, 71456, 71457, 71465, 71466, 71463, 71460, 71461,
+    71458, 71459, 71462, 71464, 71483, 71482, 71477, 71476, 71479, 71478,
+    71475, 71474, 71472, 71481, 71473, 71480, 9992, 128747, 128748, 128874,
+    128822, 128823, 128837, 128776, 128777, 128774, 128775, 128773, 128811,
+    128859, 128829, 128826, 128855, 128769, 128875, 128876, 128830, 128834,
+    128835, 128836, 128783, 128857, 128848, 128846, 128844, 128805, 128800,
+    128803, 128804, 128798, 128869, 128870, 128871, 128872, 128873, 128787,
+    128865, 128866, 128864, 128880, 128794, 128841, 128883, 128882, 128854,
+    128878, 128796, 128797, 128801, 128810, 128851, 128784, 128785, 128786,
+    128824, 128881, 128789, 128879, 128782, 128843, 128858, 128856, 128868,
+    128867, 128863, 128768, 128833, 128818, 128816, 128817, 128799, 128819,
+    128820, 128821, 128827, 128828, 128877, 128792, 128793, 128788, 128806,
+    128813, 128825, 128850, 128860, 128861, 128814, 128807, 128812, 128802,
+    128862, 128781, 128839, 128795, 128852, 128847, 128831, 128832, 128840,
+    128809, 128849, 128845, 128778, 128815, 128779, 128780, 128790, 128791,
+    128808, 128772, 128842, 128853, 128771, 128838, 128770, 9879, 8501,
+    983054, 8780, 9006, 983203, 8776, 10863, 8778, 9095, 9941, 128126, 9200,
+    38, 127994, 127944, 128657, 10815, 82970, 82971, 82964, 82965, 82966,
+    82967, 82968, 82969, 82972, 82973, 82974, 82994, 82995, 82996, 82987,
+    82988, 82992, 82993, 82986, 82989, 82990, 82991, 82997, 82998, 82999,
+    83016, 83017, 83018, 83019, 83010, 83011, 83012, 83013, 83014, 83015,
+    83020, 83021, 83022, 83050, 83051, 83052, 83053, 83043, 83044, 83045,
+    83046, 83047, 83048, 83049, 83054, 82984, 82985, 82975, 82976, 82977,
+    82978, 82979, 82980, 82981, 82982, 82983, 82953, 82954, 82955, 82956,
+    82957, 82958, 82959, 82960, 82961, 82962, 82963, 82944, 82945, 82946,
+    82947, 82948, 82949, 82950, 82951, 82952, 83000, 83001, 83002, 83003,
+    83004, 83005, 83006, 83007, 83008, 83009, 83023, 83024, 83025, 83026,
+    83027, 83028, 83029, 83030, 83031, 83032, 83033, 83034, 83035, 83036,
+    83037, 83038, 83039, 83040, 83041, 83042, 83062, 83063, 83064, 83065,
+    83070, 83071, 83072, 83073, 83066, 83067, 83068, 83055, 83056, 83057,
+    83058, 83059, 83060, 83061, 83069, 83074, 83075, 83076, 83077, 83078,
+    83083, 83084, 83079, 83080, 83081, 83082, 83085, 83086, 83087, 83088,
+    83094, 83095, 83089, 83090, 83091, 83092, 83093, 83096, 83097, 83098,
+    83099, 83105, 83106, 83100, 83101, 83102, 83103, 83104, 83107, 83108,
+    83109, 83110, 83111, 83112, 83113, 83114, 83115, 83116, 83117, 83118,
+    83119, 83120, 83121, 83122, 83123, 83124, 83125, 83126, 83127, 83128,
+    83129, 83130, 83131, 83132, 83133, 83134, 83135, 83136, 83137, 83138,
+    83139, 83140, 83141, 83142, 83143, 83144, 83145, 83146, 83147, 83148,
+    83149, 83150, 83151, 83152, 83153, 83154, 83155, 83156, 83157, 83158,
+    83159, 83160, 83161, 83162, 83163, 83164, 83165, 83166, 83167, 83168,
+    83169, 83170, 83173, 83174, 83175, 83180, 83181, 83183, 83184, 83171,
+    83172, 83176, 83177, 83178, 83179, 83182, 83190, 83191, 83192, 83193,
+    83185, 83186, 83187, 83188, 83189, 83194, 83195, 83196, 83274, 83275,
+    83280, 83281, 83270, 83271, 83272, 83273, 83276, 83277, 83278, 83279,
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+    127947, 9840, 128734, 9784, 9855, 129197, 129196, 9702, 9815, 129548,
+    129590, 129608, 129611, 9812, 129545, 129587, 9816, 129542, 129563,
+    129584, 129591, 129605, 129549, 129616, 129614, 129615, 9817, 129550,
+    129592, 9813, 129546, 129588, 9814, 129547, 129589, 129569, 129566,
+    129570, 129571, 129567, 129568, 9675, 128906, 9862, 10732, 9863, 9717,
+    9718, 9716, 9719, 9831, 10209, 10210, 10211, 9671, 9672, 128922, 128923,
+    10192, 9826, 9931, 128071, 128407, 9759, 9663, 9661, 9920, 9921, 10069,
+    9872, 9983, 10048, 128174, 11214, 10023, 9785, 128427, 129293, 9825,
+    9989, 129984, 11041, 11053, 10710, 11036, 128326, 9945, 128072, 9756,
+    9669, 9667, 9665, 128928, 11046, 11088, 9725, 9723, 11048, 11229, 10001,
+    9649, 11040, 127985, 10068, 11092, 9659, 9657, 9655, 128073, 9758, 9645,
+    9988, 65094, 9750, 11051, 11090, 9643, 9786, 9828, 9633, 128307, 128916,
+    9635, 128917, 10212, 9713, 9714, 10213, 9634, 9712, 9715, 9707, 9093,
+    127779, 127781, 127782, 9788, 127780, 9734, 128382, 9743, 9186, 10177,
+    9943, 128070, 9757, 129994, 9653, 9651, 9708, 11006, 11055, 9647, 11038,
+    10163, 128011, 129144, 129152, 129120, 129136, 129128, 129146, 129154,
+    129122, 129138, 129130, 129147, 129155, 129123, 129139, 129131, 129145,
+    129153, 129121, 129137, 129129, 129149, 129157, 129125, 129141, 129133,
+    129148, 129156, 129124, 129140, 129132, 129150, 129158, 129126, 129142,
+    129134, 129151, 129159, 129127, 129143, 129135, 11838, 129344, 127888,
+    127788, 129695, 127863, 128521, 129725, 128430, 128732, 128105, 128111,
+    128098, 128090, 128082, 128097, 128698, 11825, 8288, 128506, 128543,
+    129713, 8361, 129717, 128058, 127873, 8768, 129340, 128295, 9997, 983233,
+    8999, 129659, 129644, 129643, 129641, 129639, 129642, 129645, 129640,
+    129637, 129636, 129634, 129632, 129635, 129638, 129633, 8891, 129393,
+    128155, 165, 69292, 69291, 69293, 69256, 69255, 69254, 69281, 69268,
+    69259, 69248, 69271, 69289, 69286, 69287, 69257, 69278, 69277, 69279,
+    69276, 69280, 69296, 69282, 69251, 69250, 69266, 69265, 69267, 69253,
+    69252, 69269, 69274, 69275, 69284, 69285, 69272, 69258, 69288, 69297,
+    69263, 69260, 69270, 69262, 69261, 69249, 69283, 69273, 69264, 42139,
+    42149, 42173, 42172, 42132, 42147, 42179, 42174, 42148, 42169, 42150,
+    42134, 42166, 42135, 42145, 42143, 42137, 42175, 42157, 42154, 42167,
+    42165, 42163, 42130, 42182, 42129, 42171, 42138, 42140, 42136, 42131,
+    42151, 42164, 42181, 42142, 42156, 42170, 42176, 42178, 42160, 42133,
+    42144, 42152, 42159, 42161, 42158, 42141, 42146, 42177, 42180, 42155,
+    42162, 42128, 42168, 42153, 41070, 41059, 41060, 41058, 41073, 41072,
+    41071, 41068, 41069, 41066, 41067, 41065, 41048, 41052, 41053, 41050,
+    41051, 41049, 41046, 41047, 41056, 41057, 41054, 41055, 41063, 41064,
+    41061, 41062, 41076, 41077, 41074, 41075, 41006, 40995, 40996, 40994,
+    41009, 41008, 41007, 41004, 41005, 41002, 41003, 41001, 40984, 40988,
+    40989, 40986, 40987, 40985, 40982, 40983, 40992, 40993, 40990, 40991,
+    40999, 41000, 40997, 40998, 41012, 41015, 41014, 41013, 41010, 41011,
+    41842, 41831, 41832, 41829, 41830, 41845, 41844, 41843, 41841, 41827,
+    41828, 41825, 41826, 41839, 41840, 41837, 41838, 41835, 41836, 41833,
+    41834, 41848, 41851, 41850, 41849, 41846, 41847, 41670, 41659, 41660,
+    41658, 41673, 41672, 41671, 41668, 41669, 41666, 41667, 41665, 41648,
+    41652, 41653, 41650, 41651, 41649, 41646, 41647, 41656, 41657, 41654,
+    41655, 41663, 41664, 41661, 41662, 41676, 41679, 41678, 41677, 41674,
+    41675, 41293, 41282, 41283, 41281, 41296, 41295, 41294, 41291, 41292,
+    41272, 41275, 41276, 41274, 41273, 41270, 41271, 41289, 41290, 41288,
+    41279, 41280, 41277, 41278, 41286, 41287, 41284, 41285, 41238, 41228,
+    41227, 41241, 41240, 41239, 41236, 41237, 41218, 41221, 41222, 41220,
+    41219, 41216, 41217, 41234, 41235, 41233, 41225, 41226, 41223, 41224,
+    41231, 41232, 41229, 41230, 41174, 41175, 41173, 41171, 41172, 41169,
+    41170, 41167, 41168, 41165, 41166, 41184, 41185, 41182, 41183, 41178,
+    41181, 41180, 41179, 41176, 41177, 41494, 41496, 41497, 41495, 41492,
+    41493, 41516, 41504, 41505, 41502, 41503, 41519, 41518, 41517, 41514,
+    41515, 41500, 41501, 41498, 41499, 41512, 41513, 41510, 41511, 41508,
+    41509, 41506, 41507, 41460, 41448, 41449, 41446, 41447, 41463, 41462,
+    41461, 41458, 41459, 41436, 41440, 41441, 41438, 41439, 41437, 41434,
+    41435, 41444, 41445, 41442, 41443, 41456, 41457, 41454, 41455, 41452,
+    41453, 41450, 41451, 41584, 41583, 41582, 41389, 41379, 41380, 41378,
+    41392, 41391, 41390, 41387, 41388, 41369, 41372, 41373, 41371, 41370,
+    41367, 41368, 41385, 41386, 41384, 41382, 41383, 41381, 41376, 41377,
+    41374, 41375, 41395, 41398, 41397, 41396, 41393, 41394, 41125, 41117,
+    41118, 41116, 41128, 41127, 41126, 41123, 41124, 41107, 41110, 41111,
+    41109, 41108, 41105, 41106, 41114, 41115, 41112, 41113, 41121, 41122,
+    41119, 41120, 41130, 41133, 41132, 41131, 41129, 41336, 41334, 41335,
+    41333, 41332, 41340, 41338, 41339, 41337, 41322, 41326, 41327, 41324,
+    41325, 41323, 41320, 41321, 41330, 41331, 41328, 41329, 41556, 41557,
+    41554, 41555, 41563, 41564, 41562, 41544, 41548, 41549, 41546, 41547,
+    41545, 41542, 41543, 41552, 41553, 41550, 41551, 41560, 41561, 41558,
+    41559, 41591, 41592, 41589, 41590, 41598, 41599, 41597, 41587, 41588,
+    41585, 41586, 41595, 41596, 41593, 41594, 40962, 40960, 983243, 40966,
+    40967, 40964, 40965, 40963, 40961, 42025, 42017, 42018, 42016, 42028,
+    42027, 42026, 42023, 42024, 42010, 42014, 42015, 42012, 42013, 42011,
+    42008, 42009, 42021, 42022, 42019, 42020, 42031, 42032, 42029, 42030,
+    41970, 41962, 41963, 41960, 41961, 41973, 41972, 41971, 41968, 41969,
+    41954, 41958, 41959, 41956, 41957, 41955, 41952, 41953, 41966, 41967,
+    41964, 41965, 41976, 41979, 41978, 41977, 41974, 41975, 41488, 41476,
+    41477, 41475, 41491, 41490, 41489, 41486, 41487, 41466, 41469, 41470,
+    41468, 41467, 41464, 41465, 41473, 41474, 41471, 41472, 41484, 41485,
+    41482, 41483, 41480, 41481, 41478, 41479, 41424, 41413, 41414, 41411,
+    41412, 41427, 41426, 41425, 41422, 41423, 41420, 41421, 41419, 41401,
+    41405, 41406, 41403, 41404, 41402, 41399, 41400, 41409, 41410, 41407,
+    41408, 41417, 41418, 41415, 41416, 41430, 41433, 41432, 41431, 41428,
+    41429, 41538, 41527, 41528, 41526, 41541, 41540, 41539, 41536, 41537,
+    41534, 41535, 41533, 41524, 41525, 41522, 41523, 41531, 41532, 41529,
+    41530, 41521, 41520, 41157, 41147, 41148, 41145, 41146, 41160, 41159,
+    41158, 41155, 41156, 41136, 41139, 41140, 41138, 41137, 41134, 41135,
+    41143, 41144, 41141, 41142, 41151, 41152, 41149, 41150, 41163, 41164,
+    41161, 41162, 41154, 41153, 41080, 41083, 41084, 41082, 41081, 41078,
+    41079, 41087, 41088, 41085, 41086, 41091, 41092, 41089, 41090, 41095,
+    41098, 41097, 41096, 41093, 41094, 41101, 41104, 41103, 41102, 41099,
+    41100, 41299, 41302, 41301, 41300, 41297, 41298, 41312, 41313, 41311,
+    41305, 41306, 41303, 41304, 41309, 41310, 41307, 41308, 41316, 41319,
+    41318, 41317, 41314, 41315, 41574, 41572, 41573, 41580, 41581, 41579,
+    41566, 41567, 41565, 41570, 41571, 41568, 41569, 41577, 41578, 41575,
+    41576, 42048, 42042, 42041, 42051, 42050, 42049, 42047, 42035, 42039,
+    42040, 42037, 42038, 42036, 42033, 42034, 42045, 42046, 42043, 42044,
+    42054, 42057, 42056, 42055, 42052, 42053, 41881, 41882, 41880, 41878,
+    41879, 41876, 41877, 41885, 41886, 41883, 41884, 41889, 41892, 41891,
+    41890, 41887, 41888, 41895, 41898, 41897, 41896, 41893, 41894, 42075,
+    42067, 42068, 42066, 42076, 42073, 42074, 42060, 42064, 42065, 42062,
+    42063, 42061, 42058, 42059, 42071, 42072, 42069, 42070, 41727, 41721,
+    41720, 41730, 41729, 41728, 41726, 41723, 41722, 41711, 41714, 41715,
+    41713, 41712, 41709, 41710, 41718, 41719, 41716, 41717, 41733, 41736,
+    41735, 41734, 41731, 41732, 41725, 41724, 41363, 41352, 41353, 41351,
+    41366, 41365, 41364, 41361, 41362, 41343, 41346, 41347, 41345, 41344,
+    41341, 41342, 41349, 41350, 41348, 41359, 41360, 41358, 41356, 41357,
+    41354, 41355, 41036, 41028, 41029, 41027, 41039, 41038, 41037, 41034,
+    41035, 41018, 41021, 41022, 41020, 41019, 41016, 41017, 41025, 41026,
+    41023, 41024, 41032, 41033, 41030, 41031, 41042, 41045, 41044, 41043,
+    41040, 41041, 41998, 41990, 41991, 41988, 41989, 42001, 42000, 41999,
+    41996, 41997, 41982, 41986, 41987, 41984, 41985, 41983, 41980, 41981,
+    41994, 41995, 41992, 41993, 42004, 42007, 42006, 42005, 42002, 42003,
+    42115, 42107, 42108, 42105, 42106, 42118, 42117, 42116, 42113, 42114,
+    42099, 42103, 42104, 42101, 42102, 42100, 42097, 42098, 42111, 42112,
+    42109, 42110, 42121, 42124, 42123, 42122, 42119, 42120, 41866, 41855,
+    41854, 41869, 41868, 41867, 41864, 41865, 41862, 41863, 41860, 41861,
+    41858, 41859, 41856, 41857, 41872, 41875, 41874, 41873, 41870, 41871,
+    41853, 41852, 41942, 41931, 41932, 41930, 41945, 41944, 41943, 41940,
+    41941, 41938, 41939, 41937, 41928, 41929, 41926, 41927, 41935, 41936,
+    41933, 41934, 41948, 41951, 41950, 41949, 41946, 41947, 41772, 41775,
+    41776, 41774, 41773, 41770, 41771, 41786, 41787, 41785, 41779, 41780,
+    41777, 41778, 41783, 41784, 41781, 41782, 41790, 41791, 41788, 41789,
+    41794, 41797, 41796, 41795, 41792, 41793, 41916, 41904, 41905, 41903,
+    41919, 41918, 41917, 41914, 41915, 41901, 41902, 41899, 41900, 41912,
+    41913, 41910, 41911, 41908, 41909, 41906, 41907, 41922, 41925, 41924,
+    41923, 41920, 41921, 41760, 41749, 41750, 41748, 41763, 41762, 41761,
+    41758, 41759, 41739, 41742, 41743, 41741, 41740, 41737, 41738, 41756,
+    41757, 41755, 41746, 41747, 41744, 41745, 41753, 41754, 41751, 41752,
+    41766, 41769, 41768, 41767, 41764, 41765, 41266, 41255, 41256, 41253,
+    41254, 41269, 41268, 41267, 41264, 41265, 41244, 41247, 41248, 41246,
+    41245, 41242, 41243, 41262, 41263, 41261, 41251, 41252, 41249, 41250,
+    41259, 41260, 41257, 41258, 41203, 41202, 41188, 41192, 41193, 41190,
+    41191, 41189, 41186, 41187, 41196, 41197, 41194, 41195, 41200, 41201,
+    41198, 41199, 41206, 41209, 41208, 41207, 41204, 41205, 41212, 41215,
+    41214, 41213, 41210, 41211, 40981, 41605, 41606, 41604, 41611, 41612,
+    41610, 41608, 41609, 41607, 41602, 41603, 41600, 41601, 42079, 42083,
+    42084, 42081, 42082, 42080, 42077, 42078, 42089, 42090, 42087, 42088,
+    42093, 42096, 42095, 42094, 42091, 42092, 42086, 42085, 41815, 41803,
+    41804, 41802, 41818, 41817, 41816, 41813, 41814, 41800, 41801, 41798,
+    41799, 41811, 41812, 41809, 41810, 41807, 41808, 41805, 41806, 41821,
+    41824, 41823, 41822, 41819, 41820, 41636, 41625, 41626, 41624, 41639,
+    41638, 41637, 41634, 41635, 41615, 41618, 41619, 41617, 41616, 41613,
+    41614, 41696, 41697, 41695, 41693, 41694, 41692, 41682, 41686, 41687,
+    41684, 41685, 41683, 41680, 41681, 41690, 41691, 41688, 41689, 41699,
+    41702, 41701, 41700, 41698, 41705, 41708, 41707, 41706, 41703, 41704,
+    41632, 41633, 41631, 41622, 41623, 41620, 41621, 41629, 41630, 41627,
+    41628, 41642, 41645, 41644, 41643, 41640, 41641, 40973, 40974, 40972,
+    40970, 40971, 40968, 40969, 40977, 40978, 40975, 40976, 40980, 40979,
+    9775, 129664, 8959, 10853, 10632, 10634, 10814, 10852, 10631, 10633,
+    10783, 10784, 10785, 10625, 10626, 72262, 72256, 72253, 72252, 72254,
+    72251, 72250, 72261, 72255, 72243, 72215, 72214, 72230, 72229, 72220,
+    72219, 72242, 72204, 72203, 72207, 72216, 72211, 72221, 72238, 72239,
+    72240, 72228, 72227, 72213, 72212, 72218, 72217, 72225, 72224, 72209,
+    72208, 72206, 72205, 72223, 72222, 72231, 72232, 72233, 72241, 72210,
+    72236, 72226, 72235, 72237, 72234, 72192, 72259, 72258, 72260, 72257,
+    72248, 72245, 72246, 72247, 72244, 72249, 72263, 72202, 72199, 72200,
+    72198, 72197, 72195, 72194, 72201, 72196, 72193, 129427, 65279, 8204,
+    8203, 8205, 11234, 129296, 118593, 118584, 118585, 118591, 118580,
+    118589, 118528, 118540, 118531, 118543, 118559, 118529, 118541, 118532,
+    118544, 118592, 118573, 118569, 118568, 118581, 118586, 118561, 118582,
+    118583, 118566, 118538, 118550, 118555, 118556, 118535, 118547, 118537,
+    118549, 118553, 118558, 118534, 118546, 118572, 118562, 118571, 118554,
+    118533, 118545, 118587, 118588, 118530, 118542, 118552, 118563, 118539,
+    118551, 118557, 118536, 118548, 118579, 118570, 118560, 118567, 118565,
+    118564, 118590, 118576, 118577, 118578, 118619, 118639, 118637, 118645,
+    118721, 118611, 118635, 118659, 118626, 118623, 118625, 118624, 118622,
+    118638, 118612, 118660, 118608, 118609, 118657, 118719, 118695, 118699,
+    118698, 118697, 118696, 118722, 118720, 118703, 118708, 118707, 118706,
+    118705, 118704, 118610, 118620, 118723, 118616, 118617, 118640, 118672,
+    118636, 118658, 118652, 118651, 118649, 118650, 118648, 118646, 118647,
+    118644, 118643, 118641, 118642, 118653, 118656, 118654, 118655, 118662,
+    118670, 118664, 118666, 118669, 118663, 118665, 118671, 118667, 118668,
+    118673, 118614, 118615, 118618, 118685, 118687, 118684, 118683, 118686,
+    118681, 118680, 118709, 118713, 118711, 118716, 118717, 118714, 118715,
+    118712, 118718, 118710, 118676, 118679, 118690, 118688, 118693, 118694,
+    118691, 118692, 118689, 118675, 118677, 118678, 118674, 118701, 118702,
+    118700, 118682, 118632, 118631, 118634, 118633, 118628, 118627, 118630,
+    118629, 118613, 118621, 118661, 118596, 118597, 118594, 118595, 118598,
+    129503, 983264, 983222, 983221, 983223,
 };
 
-static const unsigned short phrasebook_offset1[] = {
+#define DAWG_CODEPOINT_TO_POS_SHIFT 8
+#define DAWG_CODEPOINT_TO_POS_NOTFOUND 35762
+static const unsigned char dawg_codepoint_to_pos_index1[] = {
     0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
     21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
-    39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
-    57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74,
-    75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92,
-    93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 105, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118,
-    119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    130, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 131, 132, 133,
-    134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147,
-    148, 104, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160,
-    161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 104, 171, 172, 173,
-    174, 175, 176, 177, 178, 179, 180, 181, 104, 182, 183, 104, 184, 185,
-    186, 187, 104, 188, 189, 190, 191, 192, 193, 194, 104, 195, 196, 197,
-    198, 104, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210,
-    211, 212, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 213, 214, 215, 216, 217, 218,
-    219, 220, 221, 222, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 223, 224, 225, 226, 227, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 228, 229, 230, 231, 232,
-    233, 234, 235, 104, 104, 104, 104, 236, 237, 238, 239, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104,
-    104, 104, 104, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 104,
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+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 175,
+    176, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 177, 178, 179, 180, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
+    52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
 };
 
-static const unsigned int phrasebook_offset2[] = {
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 6, 9, 11, 14, 17, 19, 21, 24, 27, 29, 31,
-    33, 35, 39, 41, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 69, 72,
-    75, 78, 82, 86, 91, 96, 101, 105, 110, 115, 120, 124, 129, 134, 138, 143,
-    148, 152, 157, 162, 166, 171, 176, 180, 185, 190, 195, 200, 205, 209,
-    213, 217, 221, 224, 228, 232, 237, 242, 247, 251, 256, 261, 266, 270,
-    275, 280, 284, 289, 294, 298, 303, 308, 312, 317, 322, 326, 331, 336,
-    341, 346, 351, 356, 359, 364, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 366, 370, 375,
-    378, 381, 384, 387, 390, 393, 395, 398, 404, 412, 415, 419, 422, 424,
-    427, 430, 433, 436, 440, 443, 446, 449, 451, 454, 460, 468, 475, 482,
-    489, 494, 501, 508, 515, 522, 529, 537, 542, 550, 558, 566, 574, 582,
-    590, 598, 606, 614, 619, 627, 634, 641, 648, 655, 662, 665, 671, 678,
-    685, 692, 699, 707, 712, 719, 726, 733, 740, 747, 754, 762, 767, 775,
-    783, 791, 799, 807, 815, 823, 831, 839, 844, 852, 859, 866, 873, 880,
-    887, 890, 896, 903, 910, 917, 924, 932, 937, 945, 952, 959, 966, 973,
-    980, 987, 995, 1003, 1011, 1019, 1027, 1035, 1043, 1051, 1059, 1067,
-    1074, 1081, 1089, 1097, 1105, 1113, 1121, 1129, 1137, 1145, 1153, 1161,
-    1169, 1177, 1185, 1193, 1201, 1209, 1217, 1225, 1233, 1241, 1248, 1255,
-    1263, 1271, 1279, 1287, 1295, 1303, 1311, 1319, 1327, 1333, 1338, 1343,
-    1351, 1359, 1367, 1375, 1380, 1388, 1396, 1404, 1412, 1420, 1428, 1437,
-    1446, 1453, 1460, 1468, 1476, 1484, 1492, 1500, 1508, 1519, 1524, 1529,
-    1536, 1543, 1550, 1557, 1565, 1573, 1578, 1583, 1591, 1599, 1607, 1615,
-    1623, 1631, 1639, 1647, 1655, 1663, 1671, 1679, 1687, 1695, 1703, 1711,
-    1719, 1727, 1734, 1741, 1748, 1755, 1762, 1769, 1776, 1783, 1791, 1799,
-    1807, 1815, 1822, 1829, 1837, 1845, 1853, 1861, 1869, 1877, 1885, 1893,
-    1901, 1909, 1917, 1923, 1929, 1935, 1942, 1949, 1954, 1959, 1965, 1972,
-    1979, 1986, 1993, 2001, 2009, 2015, 2021, 2026, 2032, 2039, 2046, 2053,
-    2058, 2063, 2068, 2075, 2082, 2089, 2096, 2103, 2109, 2117, 2127, 2135,
-    2142, 2149, 2154, 2159, 2166, 2173, 2177, 2182, 2187, 2192, 2200, 2209,
-    2216, 2223, 2232, 2239, 2246, 2251, 2258, 2265, 2272, 2279, 2286, 2291,
-    2298, 2305, 2313, 2318, 2323, 2328, 2338, 2342, 2348, 2354, 2360, 2366,
-    2374, 2387, 2395, 2400, 2410, 2415, 2420, 2430, 2435, 2442, 2449, 2457,
-    2465, 2472, 2479, 2486, 2493, 2503, 2513, 2523, 2533, 2543, 2553, 2563,
-    2573, 2578, 2588, 2598, 2608, 2618, 2626, 2634, 2641, 2648, 2656, 2664,
-    2672, 2680, 2687, 2694, 2704, 2714, 2722, 2730, 2738, 2743, 2753, 2758,
-    2766, 2774, 2779, 2784, 2792, 2800, 2811, 2822, 2830, 2838, 2848, 2858,
-    2866, 2874, 2883, 2892, 2901, 2910, 2920, 2930, 2939, 2948, 2958, 2968,
-    2976, 2984, 2993, 3002, 3011, 3020, 3030, 3040, 3048, 3056, 3065, 3074,
-    3083, 3092, 3101, 3110, 3115, 3120, 3128, 3136, 3146, 3154, 3159, 3164,
-    3171, 3178, 3185, 3192, 3200, 3208, 3218, 3228, 3238, 3248, 3255, 3262,
-    3272, 3282, 3290, 3298, 3306, 3314, 3322, 3329, 3336, 3343, 3349, 3356,
-    3363, 3370, 3379, 3389, 3399, 3406, 3413, 3419, 3424, 3430, 3437, 3444,
-    3451, 3458, 3469, 3479, 3486, 3493, 3500, 3507, 3512, 3517, 3523, 3529,
-    3535, 3543, 3551, 3558, 3564, 3569, 3576, 3582, 3590, 3601, 3611, 3620,
-    3627, 3633, 3639, 3644, 3651, 3657, 3664, 3671, 3678, 3683, 3688, 3697,
-    3705, 3714, 3719, 3725, 3735, 3742, 3750, 3759, 3765, 3771, 3777, 3784,
-    3789, 3794, 3804, 3812, 3821, 3829, 3837, 3847, 3852, 3859, 3866, 3871,
-    3883, 3892, 3900, 3906, 3915, 3920, 3925, 3932, 3938, 3944, 3950, 3956,
-    3965, 3973, 3978, 3986, 3992, 4000, 4008, 4014, 4020, 4026, 4034, 4042,
-    4048, 4056, 4062, 4067, 4074, 4082, 4092, 4099, 4106, 4116, 4123, 4130,
-    4140, 4147, 4154, 4161, 4167, 4173, 4182, 4194, 4199, 4206, 4211, 4215,
-    4220, 4228, 4235, 4240, 4245, 4249, 4254, 4259, 4263, 4269, 4275, 4281,
-    4287, 4295, 4300, 4305, 4310, 4315, 4321, 4323, 4328, 4332, 4338, 4344,
-    4350, 4355, 4362, 4369, 4375, 4382, 4390, 4398, 4403, 4408, 4412, 4417,
-    4419, 4421, 4424, 4426, 4429, 4434, 4439, 4445, 4450, 4454, 4459, 4464,
-    4473, 4479, 4484, 4490, 4495, 4501, 4509, 4517, 4521, 4525, 4530, 4536,
-    4542, 4548, 4554, 4559, 4566, 4574, 4582, 4587, 4593, 4600, 4607, 4614,
-    4621, 4625, 4631, 4636, 4641, 4646, 4651, 4654, 4657, 4660, 4663, 4666,
-    4669, 4673, 4677, 4683, 4686, 4691, 4697, 4703, 4706, 4711, 4716, 4720,
-    4726, 4731, 4737, 4743, 4748, 4753, 4758, 4761, 4767, 4772, 4777, 4781,
-    4786, 4792, 4798, 4801, 4805, 4809, 4813, 4816, 4819, 4824, 4828, 4835,
-    4839, 4845, 4849, 4855, 4859, 4863, 4867, 4872, 4877, 4884, 4890, 4897,
-    4903, 4909, 4915, 4918, 4922, 4926, 4930, 4934, 4939, 4944, 4948, 4952,
-    4958, 4962, 4966, 4971, 4977, 4982, 4988, 4992, 4999, 5004, 5009, 5014,
-    5019, 5025, 5028, 5032, 5037, 5042, 5051, 5057, 5061, 5065, 5070, 5074,
-    5079, 5083, 5087, 5092, 5096, 5102, 5107, 5112, 5117, 5122, 5127, 5132,
-    5138, 5144, 5150, 5156, 5161, 5167, 5173, 5179, 5184, 5189, 5196, 5203,
-    5207, 5212, 5219, 0, 0, 5226, 5229, 5238, 5247, 5258, 5262, 0, 0, 0, 0,
-    5267, 5270, 5275, 5283, 5288, 5296, 5304, 0, 5312, 0, 5320, 5328, 5336,
-    5347, 5352, 5357, 5362, 5367, 5372, 5377, 5382, 5387, 5392, 5397, 5402,
-    5407, 5412, 5417, 5422, 5427, 0, 5432, 5437, 5442, 5447, 5452, 5457,
-    5462, 5467, 5475, 5483, 5491, 5499, 5507, 5515, 5526, 5531, 5536, 5541,
-    5546, 5551, 5556, 5561, 5566, 5571, 5576, 5581, 5586, 5591, 5596, 5601,
-    5606, 5611, 5617, 5622, 5627, 5632, 5637, 5642, 5647, 5652, 5660, 5668,
-    5676, 5684, 5692, 5697, 5701, 5705, 5712, 5722, 5732, 5736, 5740, 5744,
-    5750, 5757, 5761, 5766, 5770, 5775, 5779, 5784, 5788, 5793, 5798, 5803,
-    5808, 5813, 5818, 5823, 5828, 5833, 5838, 5843, 5848, 5853, 5858, 5863,
-    5867, 5871, 5877, 5881, 5886, 5892, 5900, 5905, 5910, 5917, 5922, 5927,
-    5934, 5943, 5952, 5963, 5971, 5976, 5981, 5986, 5993, 5998, 6004, 6009,
-    6014, 6019, 6024, 6029, 6034, 6042, 6048, 6053, 6057, 6062, 6067, 6072,
-    6077, 6082, 6087, 6092, 6096, 6102, 6106, 6111, 6116, 6121, 6125, 6130,
-    6135, 6140, 6145, 6149, 6154, 6158, 6163, 6168, 6173, 6178, 6184, 6189,
-    6195, 6199, 6204, 6208, 6212, 6217, 6222, 6227, 6232, 6237, 6242, 6247,
-    6251, 6257, 6261, 6266, 6271, 6276, 6280, 6285, 6290, 6295, 6300, 6304,
-    6309, 6313, 6318, 6323, 6328, 6333, 6339, 6344, 6350, 6354, 6359, 6363,
-    6371, 6376, 6381, 6386, 6393, 6398, 6404, 6409, 6414, 6419, 6424, 6429,
-    6434, 6442, 6448, 6453, 6458, 6463, 6468, 6473, 6479, 6485, 6492, 6499,
-    6508, 6517, 6524, 6531, 6540, 6549, 6554, 6559, 6564, 6569, 6574, 6579,
-    6584, 6589, 6600, 6611, 6616, 6621, 6628, 6635, 6643, 6651, 6656, 6661,
-    6666, 6671, 6675, 6679, 6683, 6689, 6695, 6699, 6706, 6711, 6721, 6731,
-    6737, 6743, 6751, 6759, 6767, 6775, 6782, 6789, 6797, 6805, 6813, 6821,
-    6829, 6837, 6845, 6853, 6861, 6869, 6876, 6883, 6889, 6895, 6903, 6911,
-    6918, 6925, 6933, 6941, 6947, 6953, 6961, 6969, 6977, 6985, 6991, 6997,
-    7005, 7013, 7021, 7029, 7036, 7043, 7051, 7059, 7067, 7075, 7080, 7085,
-    7092, 7099, 7109, 7119, 7123, 7131, 7139, 7146, 7153, 7161, 7169, 7176,
-    7183, 7191, 7199, 7206, 7213, 7221, 7229, 7234, 7241, 7248, 7255, 7262,
-    7268, 7274, 7282, 7290, 7295, 7300, 7308, 7316, 7324, 7332, 7340, 7348,
-    7355, 7362, 7370, 7378, 7386, 7394, 7401, 7408, 7414, 7420, 7429, 7438,
-    7446, 7454, 7461, 7468, 7475, 7482, 7490, 7498, 7506, 7514, 7522, 7530,
-    7538, 7546, 7556, 7566, 7573, 7580, 7587, 7594, 7601, 7608, 7615, 7622,
-    7629, 7636, 7643, 7650, 7657, 7664, 7671, 7678, 7685, 7692, 7699, 7706,
-    7713, 7720, 7727, 7734, 7739, 7744, 7749, 7754, 7759, 7764, 7769, 7774,
-    7779, 7784, 7790, 7796, 7804, 7812, 7820, 7828, 7836, 7844, 7852, 7860,
-    7868, 7876, 7881, 7886, 7891, 7896, 7904, 0, 7912, 7918, 7924, 7930,
-    7936, 7942, 7948, 7954, 7960, 7965, 7971, 7977, 7983, 7989, 7995, 8001,
-    8007, 8013, 8019, 8025, 8031, 8037, 8043, 8049, 8055, 8061, 8067, 8073,
-    8078, 8084, 8090, 8096, 8102, 8108, 8114, 8120, 8126, 8132, 0, 0, 8138,
-    8146, 8150, 8155, 8160, 8164, 8169, 8174, 8181, 8187, 8193, 8199, 8205,
-    8211, 8217, 8223, 8229, 8234, 8240, 8246, 8252, 8258, 8264, 8270, 8276,
-    8282, 8288, 8294, 8300, 8306, 8312, 8318, 8324, 8330, 8336, 8342, 8347,
-    8353, 8359, 8365, 8371, 8377, 8383, 8389, 8395, 8401, 8407, 8415, 8422,
-    8428, 0, 0, 8432, 8439, 8446, 0, 8451, 8456, 8461, 8466, 8473, 8480,
-    8485, 8490, 8495, 8500, 8505, 8510, 8515, 8522, 8527, 8534, 8541, 8546,
-    8553, 8558, 8563, 8568, 8575, 8580, 8585, 8592, 8601, 8606, 8611, 8616,
-    8621, 8627, 8632, 8639, 8646, 8653, 8658, 8663, 8668, 8673, 8678, 8683,
-    8693, 8698, 8707, 8712, 8717, 8722, 8727, 8734, 8741, 8748, 8753, 8758,
-    8765, 0, 0, 0, 0, 0, 0, 0, 0, 8772, 8776, 8780, 8784, 8788, 8792, 8796,
-    8800, 8804, 8808, 8812, 8817, 8821, 8825, 8830, 8834, 8839, 8843, 8847,
-    8851, 8856, 8860, 8865, 8869, 8873, 8877, 8881, 0, 0, 0, 0, 8885, 8890,
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-    8929, 8934, 8938, 8942, 8946, 8952, 8958, 8961, 8968, 8977, 8980, 8983,
-    8988, 8994, 8998, 9006, 9012, 9018, 9026, 9030, 9035, 9046, 9051, 9055,
-    9059, 9063, 9066, 9069, 9076, 9083, 9087, 9093, 9097, 9104, 9111, 9119,
-    9126, 9133, 9137, 9141, 9147, 9151, 9155, 9159, 9163, 9167, 9171, 9175,
-    9179, 9183, 9187, 9191, 9195, 9199, 9203, 9207, 9211, 9215, 9223, 9231,
-    9241, 9250, 9259, 9262, 9266, 9270, 9274, 9278, 9282, 9286, 9290, 9294,
-    9299, 9303, 9306, 9309, 9312, 9315, 9318, 9321, 9324, 9327, 9331, 9335,
-    9339, 9344, 9349, 9355, 9358, 9365, 9374, 9379, 9384, 9391, 9397, 9402,
-    9406, 9410, 9414, 9418, 9422, 9426, 9430, 9434, 9438, 9442, 9447, 9452,
-    9459, 9465, 9471, 9477, 9482, 9491, 9500, 9505, 9512, 9519, 9526, 9533,
-    9537, 9541, 9545, 9552, 9562, 9566, 9570, 9574, 9581, 9589, 9593, 9597,
-    9604, 9608, 9612, 9616, 9623, 9630, 9642, 9646, 9650, 9654, 9664, 9673,
-    9677, 9685, 9692, 9699, 9708, 9719, 9727, 9731, 9740, 9751, 9759, 9772,
-    9780, 9788, 9796, 9804, 9810, 9819, 9826, 9830, 9838, 9842, 9849, 9857,
-    9861, 9867, 9874, 9881, 9885, 9893, 9897, 9904, 9908, 9916, 9920, 9928,
-    9936, 9943, 9951, 9959, 9966, 9972, 9976, 9983, 9991, 9997, 10004, 10011,
-    10017, 10027, 10035, 10042, 10048, 10052, 10055, 10059, 10065, 10073,
-    10077, 10083, 10089, 10096, 10103, 10106, 10113, 10118, 10127, 10132,
-    10136, 10149, 10162, 10168, 10175, 10180, 10186, 10191, 10197, 10207,
-    10214, 10223, 10233, 10239, 10244, 10249, 10253, 10257, 10262, 10267,
-    10273, 10281, 10289, 10300, 10305, 10314, 10323, 10330, 10336, 10342,
-    10348, 10354, 10360, 10366, 10372, 10378, 10384, 10391, 10398, 10405,
-    10411, 10419, 10428, 10435, 10443, 10451, 10457, 10463, 10469, 10477,
-    10484, 10494, 10503, 10507, 10513, 10519, 0, 10525, 10530, 10535, 10542,
-    10547, 10552, 10559, 10564, 10573, 10578, 10583, 10588, 10593, 10598,
-    10605, 10610, 10617, 10622, 10627, 10632, 10637, 10642, 10648, 10652,
-    10657, 10664, 10669, 10674, 10679, 10684, 10689, 10696, 10703, 10710,
-    10715, 10720, 10726, 10731, 10736, 10742, 10747, 10752, 10760, 10768,
-    10773, 10778, 10784, 10789, 10794, 10798, 10804, 10808, 10812, 10818,
-    10824, 10829, 10834, 10841, 10848, 10852, 0, 0, 10856, 10863, 10870,
-    10877, 10887, 10899, 10911, 10928, 10940, 10951, 10959, 10966, 10977,
-    10992, 11003, 11009, 11018, 11026, 11038, 11048, 11056, 11068, 11075,
-    11083, 11095, 11101, 11107, 11115, 11123, 11131, 11137, 11147, 11155,
-    11165, 11175, 11188, 11202, 11216, 11226, 11237, 11248, 11261, 11274,
-    11288, 11300, 11312, 11325, 11338, 11350, 11363, 11372, 11380, 11385,
-    11390, 11395, 11400, 11405, 11410, 11415, 11420, 11425, 11430, 11435,
-    11440, 11445, 11450, 11455, 11460, 11465, 11470, 11475, 11480, 11485,
-    11490, 11495, 11500, 11505, 11510, 11515, 11520, 11525, 11530, 11535,
-    11540, 11544, 11549, 11554, 11559, 11564, 11569, 11573, 11577, 11581,
-    11585, 11589, 11593, 11597, 11601, 11605, 11609, 11613, 0, 0, 0, 0, 0, 0,
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-    11647, 11651, 11655, 11659, 11663, 11668, 11672, 11676, 11680, 11685,
-    11689, 11694, 11699, 11704, 11708, 11713, 11718, 11723, 11728, 11732,
-    11737, 11741, 11746, 11751, 11755, 11759, 11766, 11770, 11775, 11779,
-    11783, 11788, 11792, 11799, 11806, 11813, 11819, 11827, 11835, 11844,
-    11852, 11859, 11866, 11874, 11880, 11886, 11892, 11898, 11905, 11910,
-    11914, 11919, 0, 0, 11923, 11927, 11932, 11937, 11942, 11947, 11952,
-    11957, 11962, 11967, 11972, 11977, 11982, 11987, 11992, 11997, 12002,
-    12007, 12012, 12017, 12022, 12027, 12032, 12037, 12042, 12047, 12052,
-    12057, 12062, 12067, 12075, 12082, 12088, 12093, 12101, 12108, 12114,
-    12121, 12127, 12132, 12139, 12146, 12152, 12157, 12162, 12168, 12173,
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-    12230, 12238, 12244, 12250, 12256, 12262, 12268, 12276, 0, 12282, 12287,
-    12292, 12297, 12302, 12307, 12312, 12317, 12322, 12327, 12332, 12337,
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-    12575, 12585, 12591, 12605, 12616, 12630, 12645, 12657, 12672, 12681,
-    12690, 12698, 12706, 12713, 12719, 12726, 12733, 12743, 12753, 12760,
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-    12813, 12820, 12825, 12831, 12836, 12843, 12852, 12860, 12868, 12876,
-    12888, 12895, 12902, 12909, 12921, 12932, 12939, 12947, 12953, 12958,
-    12966, 12974, 12982, 12988, 12998, 13006, 13013, 13026, 13034, 13042,
-    13051, 13060, 13073, 13079, 13085, 13091, 13099, 13107, 13115, 13123,
-    13131, 13139, 13149, 13157, 13165, 13176, 13180, 13186, 13193, 13203,
-    13210, 13215, 13222, 13229, 13233, 13239, 13250, 13255, 13262, 13267,
-    13272, 13277, 13285, 13293, 13300, 13307, 13314, 13321, 13328, 13335,
-    13342, 13348, 13356, 13361, 13366, 13371, 13376, 13381, 13386, 13391,
-    13396, 13401, 13406, 13411, 13416, 13421, 13426, 13431, 13436, 13441,
-    13447, 13453, 13459, 13464, 13469, 13474, 13479, 13485, 13494, 13502,
-    13508, 13516, 13522, 13526, 13530, 13534, 13539, 13542, 13546, 13549,
-    13553, 13556, 13560, 13564, 13568, 13573, 13578, 13581, 13585, 13590,
-    13595, 13598, 13602, 13605, 13609, 13613, 13617, 13621, 13625, 13629,
-    13633, 13637, 13641, 13645, 13649, 13653, 13657, 13661, 13665, 13669,
-    13673, 13677, 13680, 13684, 13687, 13691, 13695, 13699, 13702, 13705,
-    13708, 13712, 13715, 13719, 13723, 13727, 13731, 13735, 13738, 13741,
-    13746, 13751, 13755, 13759, 13764, 13768, 13773, 13777, 13782, 13787,
-    13793, 13799, 13805, 13809, 13814, 13820, 13826, 13830, 13835, 13839,
-    13845, 13850, 13853, 13859, 13865, 13870, 13875, 13882, 13887, 13892,
-    13896, 13900, 13904, 13908, 13912, 13916, 13920, 13924, 13929, 13934,
-    13939, 13945, 13948, 13952, 13956, 13959, 13962, 13965, 13968, 13971,
-    13974, 13977, 13980, 13983, 13987, 13994, 13999, 14003, 14007, 14011,
-    14015, 14019, 14025, 14029, 14033, 14037, 14041, 14047, 14051, 14055,
-    14059, 14064, 14069, 0, 14074, 14078, 14083, 14087, 14092, 14096, 14101,
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-    14441, 14445, 14449, 14453, 14462, 14471, 14476, 14481, 14488, 14495,
-    14502, 14509, 14524, 14532, 14536, 14541, 14548, 14553, 0, 0, 14558,
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-    14646, 14651, 14656, 14661, 14666, 14671, 14676, 14681, 14686, 14691,
-    14696, 14701, 14706, 14711, 14716, 0, 14720, 14724, 14729, 14734, 14739,
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-    14883, 14887, 14891, 14895, 14899, 14903, 14907, 14911, 14915, 14919,
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-    15044, 15049, 15054, 15059, 15064, 15069, 15074, 15079, 15084, 15089,
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-    15463, 15467, 15472, 15476, 15481, 15486, 15491, 15496, 15501, 15506,
-    15511, 15516, 15521, 15526, 15531, 15536, 15541, 15546, 15551, 15556,
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-    17231, 17235, 17239, 17243, 17247, 17251, 17255, 17259, 17263, 17267,
-    17271, 17275, 17279, 17283, 17287, 17291, 17295, 17299, 17302, 17306,
-    17309, 17313, 17317, 17321, 17324, 17327, 17330, 17334, 17337, 17341,
-    17345, 17349, 17353, 17357, 17360, 17363, 17367, 17374, 17380, 17384,
-    17389, 17393, 17398, 17402, 17407, 17412, 0, 17418, 17422, 17427, 0,
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-    17471, 17477, 17483, 17489, 17495, 17501, 17507, 17513, 17519, 17525,
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-    17568, 17571, 17574, 17577, 17580, 17583, 17587, 17592, 17596, 17602,
-    17608, 17614, 17620, 17626, 17632, 17636, 17642, 17648, 17654, 17659,
-    17665, 0, 17671, 17675, 17679, 0, 17683, 17687, 17691, 17695, 17699,
-    17703, 17707, 17711, 17715, 17719, 17723, 17727, 17731, 17735, 17739,
-    17743, 17747, 17751, 0, 0, 0, 17755, 17761, 17767, 17773, 17779, 17785,
-    17791, 17797, 17803, 17809, 17815, 17821, 17829, 17835, 17841, 17847,
-    17853, 17859, 17865, 17871, 17877, 17883, 17889, 17895, 0, 17901, 17907,
-    17913, 17919, 17925, 17931, 17935, 17941, 17945, 0, 17949, 0, 0, 17955,
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-    17995, 18000, 18007, 18014, 18021, 18028, 0, 18035, 0, 18042, 18047,
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-    18194, 18202, 18210, 18218, 18226, 18234, 18242, 18250, 18258, 18266,
-    18274, 18282, 18289, 18297, 18305, 18313, 18321, 18329, 18336, 18344,
-    18352, 18360, 18368, 18376, 18384, 18392, 18400, 18408, 18416, 18424,
-    18431, 18439, 18447, 18453, 18461, 18467, 18475, 18483, 18491, 18499,
-    18507, 18515, 18522, 18530, 18536, 18543, 18551, 18559, 18567, 18574,
-    18582, 18590, 18598, 18605, 18613, 0, 0, 0, 0, 18619, 18626, 18633,
-    18641, 18648, 18658, 18668, 18674, 18680, 18686, 18694, 18702, 18710,
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-    0, 0, 0, 18795, 18800, 0, 18807, 0, 18814, 18821, 18826, 18831, 18838, 0,
-    18845, 18852, 18857, 18864, 18871, 18878, 18885, 18892, 18899, 18904,
-    18908, 18915, 18922, 18929, 18934, 18939, 18944, 18951, 18958, 18965,
-    18972, 18979, 18984, 18989, 0, 18996, 0, 19003, 19008, 19015, 19022,
-    19029, 19036, 19043, 19047, 19054, 19058, 19063, 19071, 19077, 19083,
-    19088, 19094, 19100, 19106, 19111, 19117, 19124, 19132, 19139, 0, 0,
-    19146, 19151, 19157, 19162, 19168, 0, 19174, 0, 19179, 19186, 19193,
-    19200, 19207, 19212, 19216, 0, 19220, 19225, 19229, 19233, 19237, 19241,
-    19245, 19249, 19253, 19257, 0, 0, 19261, 19267, 19273, 19280, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 19287, 19291, 19302, 19317, 19332, 19342, 19353, 19366,
-    19377, 19383, 19391, 19401, 19407, 19415, 19419, 19425, 19431, 19439,
-    19449, 19457, 19470, 19476, 19484, 19492, 19504, 19511, 19519, 19527,
-    19535, 19543, 19551, 19559, 19569, 19573, 19576, 19579, 19582, 19585,
-    19588, 19591, 19594, 19597, 19600, 19604, 19608, 19612, 19616, 19620,
-    19624, 19628, 19632, 19636, 19641, 19647, 19657, 19671, 19681, 19687,
-    19693, 19701, 19709, 19717, 19725, 19731, 19737, 19740, 19744, 19748,
-    19752, 19756, 19760, 19764, 0, 19768, 19772, 19776, 19780, 19784, 19788,
-    19792, 19796, 19800, 19804, 19808, 19811, 19814, 19818, 19822, 19826,
-    19829, 19833, 19837, 19841, 19845, 19849, 19853, 19857, 19861, 19864,
-    19867, 19870, 19874, 19878, 19881, 19884, 19887, 19891, 19896, 19900, 0,
-    0, 0, 0, 19904, 19909, 19913, 19918, 19922, 19927, 19932, 19938, 19943,
-    19949, 19953, 19958, 19962, 19967, 19977, 19983, 19989, 19996, 20006,
-    20012, 20016, 20020, 20026, 20032, 20040, 20046, 20054, 20062, 20070,
-    20080, 20088, 20098, 20103, 20109, 20115, 20121, 20127, 20133, 20139, 0,
-    20145, 20151, 20157, 20163, 20169, 20175, 20181, 20187, 20193, 20199,
-    20205, 20210, 20215, 20221, 20227, 20233, 20238, 20244, 20250, 20256,
-    20262, 20268, 20274, 20280, 20286, 20291, 20296, 20301, 20307, 20313,
-    20318, 20323, 20328, 20334, 20342, 20349, 0, 20356, 20363, 20376, 20383,
-    20390, 20398, 20406, 20412, 20418, 20424, 20434, 20439, 20445, 20455,
-    20465, 0, 20475, 20485, 20493, 20505, 20517, 20523, 20537, 20552, 20557,
-    20562, 20570, 20578, 20586, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20594,
-    20597, 20601, 20605, 20609, 20613, 20617, 20621, 20625, 20629, 20633,
-    20637, 20641, 20645, 20649, 20653, 20657, 20661, 20665, 20669, 20673,
-    20676, 20679, 20683, 20687, 20691, 20694, 20697, 20700, 20703, 20707,
-    20710, 20713, 20717, 20720, 20725, 20728, 20732, 20735, 20739, 20742,
-    20747, 20750, 20754, 20761, 20766, 20770, 20775, 20779, 20784, 20788,
-    20793, 20800, 20806, 20812, 20816, 20820, 20824, 20828, 20832, 20838,
-    20844, 20851, 20857, 20862, 20866, 20869, 20872, 20875, 20878, 20881,
-    20884, 20887, 20890, 20893, 20899, 20903, 20907, 20911, 20915, 20919,
-    20923, 20927, 20931, 20936, 20940, 20945, 20950, 20956, 20961, 20967,
-    20973, 20979, 20985, 20991, 20999, 21007, 21015, 21023, 21032, 21041,
-    21052, 21062, 21072, 21083, 21094, 21104, 21114, 21124, 21134, 21144,
-    21154, 21164, 21174, 21182, 21189, 21195, 21202, 21207, 21213, 21219,
-    21225, 21231, 21237, 21243, 21248, 21254, 21260, 21266, 21272, 21277,
-    21286, 21293, 21299, 21307, 21315, 21321, 21327, 21333, 21339, 21347,
-    21355, 21365, 21373, 21381, 21387, 21392, 21397, 21402, 21407, 21412,
-    21417, 21422, 21427, 21432, 21438, 21444, 21450, 21457, 21462, 21468,
-    21473, 21478, 21483, 21488, 21493, 21498, 21503, 21508, 21513, 21518,
-    21523, 21528, 21533, 21538, 21543, 21548, 21553, 21558, 21563, 21568,
-    21573, 21578, 21583, 21588, 21593, 21598, 21603, 21608, 21613, 21618,
-    21623, 21628, 21633, 21638, 21643, 21648, 21653, 0, 21658, 0, 0, 0, 0, 0,
-    21663, 0, 0, 21668, 21672, 21676, 21680, 21684, 21688, 21692, 21696,
-    21700, 21704, 21708, 21712, 21716, 21720, 21724, 21728, 21732, 21736,
-    21740, 21744, 21748, 21752, 21756, 21760, 21764, 21768, 21772, 21776,
-    21780, 21784, 21788, 21792, 21796, 21800, 21804, 21808, 21812, 21816,
-    21820, 21824, 21828, 21832, 21837, 21841, 21846, 21851, 21855, 21860,
-    21865, 21869, 21873, 21877, 21881, 21885, 21889, 21893, 21897, 21901,
-    21905, 21909, 21913, 21917, 21921, 21925, 21929, 21933, 21937, 21941,
-    21945, 21949, 21953, 21957, 21961, 21965, 21969, 21973, 21977, 21981,
-    21985, 21989, 21993, 21997, 22001, 22005, 22009, 22013, 22017, 22021,
-    22025, 22029, 22033, 22037, 22041, 22045, 22049, 22053, 22057, 22061,
-    22065, 22069, 22073, 22077, 22081, 22085, 22089, 22093, 22097, 22101,
-    22105, 22109, 22113, 22117, 22121, 22125, 22129, 22133, 22137, 22141,
-    22145, 22149, 22153, 22157, 22161, 22165, 22169, 22173, 22177, 22181,
-    22185, 22189, 22193, 22197, 22201, 22205, 22209, 22213, 22217, 22221,
-    22225, 22229, 22233, 22237, 22241, 22245, 22249, 22254, 22258, 22263,
-    22267, 22272, 22277, 22281, 22286, 22291, 22295, 22300, 22305, 22310,
-    22315, 22319, 22324, 22329, 22334, 22339, 22344, 22349, 22353, 22358,
-    22363, 22368, 22373, 22378, 22383, 22388, 22393, 22398, 22403, 22408,
-    22413, 22418, 22423, 22428, 22433, 22438, 22443, 22448, 22453, 22458,
-    22463, 22468, 22473, 22478, 22483, 22488, 22493, 22498, 22503, 22508,
-    22513, 22518, 22523, 22528, 22533, 22538, 22543, 22548, 22553, 22558,
-    22563, 22568, 22573, 22578, 22583, 22588, 22593, 22598, 22603, 22607,
-    22611, 22615, 22619, 22623, 22627, 22631, 22635, 22639, 22643, 22647,
-    22651, 22655, 22659, 22663, 22667, 22671, 22675, 22679, 22683, 22687,
-    22691, 22695, 22699, 22703, 22707, 22711, 22715, 22719, 22723, 22727,
-    22731, 22735, 22739, 22743, 22747, 22751, 22755, 22759, 22763, 22767,
-    22771, 22775, 22779, 22783, 22787, 22791, 22795, 22799, 22803, 22807,
-    22811, 22815, 22819, 22823, 22827, 22831, 22835, 22839, 22843, 22847,
-    22851, 22855, 22859, 22863, 22867, 22871, 22875, 22879, 22883, 22887,
-    22891, 22895, 22899, 22903, 22907, 22911, 22915, 22919, 22923, 22927,
-    22931, 22935, 22939, 22943, 22947, 22951, 22955, 22958, 22962, 22966,
-    22970, 22974, 22978, 22982, 22986, 22989, 22993, 22997, 23001, 23005,
-    23009, 23013, 23017, 23021, 23025, 23029, 23033, 23037, 23041, 23045,
-    23049, 23052, 23056, 23060, 23064, 23068, 23072, 23076, 23080, 23084,
-    23088, 23092, 23096, 23100, 23104, 23108, 23112, 23115, 23119, 23123,
-    23127, 23131, 23135, 23139, 23143, 23146, 23150, 23154, 23158, 23162,
-    23166, 23170, 23174, 23178, 23182, 23186, 23190, 23194, 23198, 23202,
-    23206, 23210, 23214, 23218, 23222, 23226, 23230, 23234, 23238, 0, 23242,
-    23246, 23250, 23254, 0, 0, 23258, 23262, 23266, 23270, 23274, 23278,
-    23282, 0, 23286, 0, 23290, 23294, 23298, 23302, 0, 0, 23306, 23310,
-    23314, 23318, 23322, 23326, 23330, 23334, 23338, 23342, 23346, 23350,
-    23354, 23358, 23362, 23366, 23370, 23374, 23378, 23382, 23386, 23390,
-    23394, 23397, 23401, 23405, 23409, 23413, 23417, 23421, 23425, 23429,
-    23433, 23437, 23441, 23445, 23449, 23453, 23457, 23461, 23465, 0, 23469,
-    23473, 23477, 23481, 0, 0, 23485, 23488, 23492, 23496, 23500, 23504,
-    23508, 23512, 23516, 23520, 23524, 23528, 23532, 23536, 23540, 23544,
-    23548, 23553, 23558, 23563, 23569, 23575, 23580, 23585, 23591, 23594,
-    23598, 23602, 23606, 23610, 23614, 23618, 23622, 0, 23626, 23630, 23634,
-    23638, 0, 0, 23642, 23646, 23650, 23654, 23658, 23662, 23666, 0, 23670,
-    0, 23674, 23678, 23682, 23686, 0, 0, 23690, 23694, 23698, 23702, 23706,
-    23710, 23714, 23718, 23722, 23727, 23732, 23737, 23743, 23749, 23754, 0,
-    23759, 23763, 23767, 23771, 23775, 23779, 23783, 23787, 23791, 23795,
-    23799, 23803, 23807, 23811, 23815, 23819, 23823, 23826, 23830, 23834,
-    23838, 23842, 23846, 23850, 23854, 23858, 23862, 23866, 23870, 23874,
-    23878, 23882, 23886, 23890, 23894, 23898, 23902, 23906, 23910, 23914,
-    23918, 23922, 23926, 23930, 23934, 23938, 23942, 23946, 23950, 23954,
-    23958, 23962, 23966, 23970, 23974, 23978, 23982, 0, 23986, 23990, 23994,
-    23998, 0, 0, 24002, 24006, 24010, 24014, 24018, 24022, 24026, 24030,
-    24034, 24038, 24042, 24046, 24050, 24054, 24058, 24062, 24066, 24070,
-    24074, 24078, 24082, 24086, 24090, 24094, 24098, 24102, 24106, 24110,
-    24114, 24118, 24122, 24126, 24130, 24134, 24138, 24142, 24146, 24150,
-    24154, 24158, 24162, 24166, 24170, 24174, 24178, 24182, 24186, 24190,
-    24194, 24198, 24202, 24206, 24210, 24214, 24218, 24222, 24226, 24229,
-    24233, 24237, 24241, 24245, 24249, 24253, 24257, 24261, 24265, 0, 0,
-    24269, 24278, 24284, 24289, 24293, 24296, 24301, 24304, 24307, 24310,
-    24315, 24319, 24324, 24327, 24330, 24333, 24336, 24339, 24342, 24345,
-    24348, 24351, 24355, 24359, 24363, 24367, 24371, 24375, 24379, 24383,
-    24387, 24391, 0, 0, 0, 24396, 24402, 24406, 24410, 24414, 24420, 24424,
-    24428, 24432, 24438, 24442, 24446, 24450, 24456, 24460, 24464, 24468,
-    24474, 24480, 24486, 24494, 24500, 24506, 24512, 24518, 24524, 0, 0, 0,
-    0, 0, 0, 24530, 24533, 24536, 24539, 24542, 24545, 24549, 24553, 24556,
-    24560, 24564, 24568, 24572, 24576, 24579, 24583, 24587, 24591, 24595,
-    24599, 24602, 24606, 24610, 24614, 24618, 24622, 24625, 24629, 24633,
-    24637, 24641, 24644, 24648, 24652, 24656, 24660, 24664, 24668, 24672,
-    24676, 24680, 24684, 24688, 24692, 24696, 24699, 24703, 24707, 24711,
-    24715, 24719, 24723, 24727, 24731, 24735, 24739, 24743, 24747, 24751,
-    24755, 24759, 24763, 24767, 24771, 24775, 24779, 24783, 24787, 24791,
-    24795, 24799, 24803, 24807, 24811, 24815, 24819, 24823, 24827, 24831,
-    24835, 24838, 24842, 24846, 24850, 24854, 24858, 0, 0, 24862, 24867,
-    24872, 24877, 24882, 24887, 0, 0, 24892, 24896, 24899, 24903, 24906,
-    24910, 24913, 24917, 24923, 24928, 24932, 24935, 24939, 24943, 24949,
-    24953, 24959, 24963, 24969, 24973, 24979, 24983, 24989, 24995, 24999,
-    25005, 25009, 25015, 25021, 25025, 25031, 25037, 25042, 25047, 25055,
-    25063, 25070, 25075, 25081, 25090, 25096, 25104, 25109, 25115, 25119,
-    25123, 25127, 25131, 25135, 25139, 25143, 25147, 25151, 25155, 25161,
-    25166, 25171, 25174, 25178, 25182, 25188, 25192, 25198, 25202, 25208,
-    25212, 25218, 25222, 25228, 25232, 25238, 25242, 25248, 25254, 25258,
-    25264, 25269, 25273, 25277, 25281, 25285, 25288, 25292, 25298, 25303,
-    25308, 25312, 25316, 25320, 25326, 25330, 25336, 25340, 25346, 25349,
-    25354, 25358, 25364, 25368, 25374, 25378, 25384, 25390, 25394, 25398,
-    25402, 25406, 25410, 25414, 25418, 25422, 25426, 25430, 25434, 25440,
-    25443, 25447, 25451, 25457, 25461, 25467, 25471, 25477, 25481, 25487,
-    25491, 25497, 25501, 25507, 25511, 25517, 25523, 25527, 25531, 25537,
-    25543, 25549, 25555, 25559, 25563, 25567, 25571, 25575, 25579, 25585,
-    25589, 25593, 25597, 25603, 25607, 25613, 25617, 25623, 25627, 25633,
-    25637, 25643, 25647, 25653, 25657, 25663, 25669, 25673, 25679, 25683,
-    25687, 25691, 25695, 25699, 25703, 25709, 25712, 25716, 25720, 25726,
-    25730, 25736, 25740, 25746, 25750, 25756, 25760, 25766, 25770, 25776,
-    25780, 25786, 25792, 25796, 25802, 25806, 25812, 25818, 25822, 25826,
-    25830, 25834, 25838, 25842, 25848, 25851, 25855, 25859, 25865, 25869,
-    25875, 25879, 25885, 25891, 25895, 25900, 25904, 25908, 25912, 25916,
-    25920, 25924, 25928, 25934, 25937, 25941, 25945, 25951, 25955, 25961,
-    25965, 25971, 25975, 25981, 25985, 25991, 25995, 26001, 26005, 26011,
-    26014, 26019, 26024, 26028, 26032, 26036, 26040, 26044, 26048, 26054,
-    26057, 26061, 26065, 26071, 26075, 26081, 26085, 26091, 26095, 26101,
-    26105, 26111, 26115, 26121, 26125, 26131, 26137, 26141, 26147, 26151,
-    26157, 26163, 26169, 26175, 26181, 26187, 26193, 26199, 26203, 26207,
-    26211, 26215, 26219, 26223, 26227, 26231, 26237, 26241, 26247, 26251,
-    26257, 26261, 26267, 26271, 26277, 26281, 26287, 26291, 26297, 26301,
-    26305, 26309, 26313, 26317, 26321, 26325, 26331, 26334, 26338, 26342,
-    26348, 26352, 26358, 26362, 26368, 26372, 26378, 26382, 26388, 26392,
-    26398, 26402, 26408, 26414, 26418, 26424, 26430, 26436, 26440, 26446,
-    26452, 26456, 26460, 26464, 26468, 26472, 26478, 26481, 26485, 26490,
-    26494, 26500, 26503, 26508, 26513, 26517, 26521, 26525, 26529, 26533,
-    26537, 26541, 26545, 26549, 26555, 26559, 26563, 26569, 26573, 26579,
-    26583, 26589, 26593, 26597, 26601, 26605, 26609, 26615, 26619, 26623,
-    26627, 26631, 26635, 26639, 26643, 26647, 26651, 26655, 26661, 26667,
-    26673, 26679, 26685, 26690, 26696, 26702, 26708, 26712, 26716, 26720,
-    26724, 26728, 26732, 26736, 26740, 26744, 26748, 26752, 26756, 26760,
-    26766, 26772, 26778, 26783, 26787, 26791, 26795, 26799, 26803, 26807,
-    26811, 26815, 26819, 26825, 26831, 26837, 26843, 26849, 26855, 26861,
-    26867, 26873, 26877, 26881, 26885, 26889, 26893, 26897, 26901, 26907,
-    26913, 26919, 26925, 26931, 26937, 26943, 26949, 26955, 26960, 26965,
-    26970, 26975, 26981, 26987, 26993, 26999, 27005, 27011, 27017, 27022,
-    27028, 27034, 27040, 27045, 27051, 27057, 27063, 27068, 27073, 27078,
-    27083, 27088, 27093, 27098, 27103, 27108, 27113, 27118, 27123, 27127,
-    27132, 27137, 27142, 27147, 27152, 27157, 27162, 27167, 27172, 27177,
-    27182, 27187, 27192, 27197, 27202, 27207, 27212, 27217, 27222, 27227,
-    27232, 27237, 27242, 27247, 27252, 27257, 27262, 27267, 27272, 27276,
-    27281, 27286, 27291, 27296, 27301, 27306, 27311, 27316, 27321, 27326,
-    27331, 27336, 27341, 27346, 27351, 27356, 27361, 27366, 27371, 27376,
-    27381, 27386, 27391, 27396, 27401, 27405, 27410, 27415, 27420, 27425,
-    27430, 27434, 27439, 27444, 27449, 27454, 27459, 27463, 27468, 27474,
-    27479, 27484, 27489, 27494, 27500, 27505, 27510, 27515, 27520, 27525,
-    27530, 27535, 27540, 27545, 27550, 27555, 27560, 27564, 27569, 27574,
-    27579, 27584, 27589, 27594, 27599, 27604, 27609, 27614, 27619, 27624,
-    27629, 27634, 27639, 27644, 27649, 27654, 27659, 27664, 27669, 27674,
-    27679, 27684, 27689, 27694, 27699, 27704, 27709, 27714, 27719, 27725,
-    27730, 27735, 27740, 27745, 27750, 27755, 27760, 27765, 27770, 27775,
-    27780, 27784, 27789, 27794, 27799, 27804, 27809, 27814, 27819, 27824,
-    27829, 27834, 27839, 27844, 27849, 27854, 27859, 27864, 27869, 27874,
-    27879, 27884, 27889, 27894, 27899, 27904, 27909, 27914, 27920, 27924,
-    27928, 27932, 27936, 27940, 27944, 27948, 27952, 27958, 27964, 27970,
-    27976, 27982, 27988, 27994, 28001, 28007, 28012, 28017, 28022, 28027,
-    28032, 28037, 28042, 28047, 28052, 28057, 28062, 28067, 28072, 28077,
-    28082, 28087, 28092, 28097, 28102, 28107, 28112, 28117, 28122, 28127,
-    28132, 28137, 28142, 28147, 0, 0, 0, 28154, 28165, 28170, 28178, 28183,
-    28188, 28193, 28202, 28207, 28213, 28219, 28225, 28230, 28236, 28242,
-    28246, 28251, 28256, 28266, 28271, 28276, 28283, 28288, 28293, 28302,
-    28307, 28316, 28323, 28330, 28337, 28344, 28355, 28362, 28367, 28377,
-    28381, 28388, 28393, 28400, 28406, 28413, 28422, 28429, 28436, 28445,
-    28452, 28457, 28462, 28473, 28480, 28485, 28496, 28503, 28508, 28513,
-    28521, 28530, 28537, 28544, 28554, 28559, 28564, 28569, 28578, 28586,
-    28591, 28596, 28601, 28606, 28611, 28616, 28621, 28626, 28631, 28636,
-    28641, 28647, 28653, 28659, 28664, 28669, 28674, 28679, 28684, 28689,
-    28698, 28707, 28716, 28725, 0, 0, 0, 0, 0, 0, 0, 28734, 28738, 28742,
-    28746, 28750, 28755, 28760, 28765, 28770, 28774, 28778, 28783, 28787,
-    28791, 28795, 28799, 28804, 28808, 28812, 28817, 28822, 28827, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 28832, 28838, 28842, 28846, 28850, 28854, 28859, 28864,
-    28869, 28874, 28878, 28882, 28887, 28891, 28895, 28899, 28903, 28908,
-    28912, 28916, 28921, 28926, 28931, 28937, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    28942, 28946, 28950, 28954, 28958, 28963, 28968, 28973, 28978, 28982,
-    28986, 28991, 28995, 28999, 29003, 29007, 29012, 29016, 29020, 29025, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 29030, 29034, 29038, 29042, 29046,
-    29051, 29056, 29061, 29066, 29070, 29074, 29079, 29083, 0, 29087, 29091,
-    29096, 0, 29100, 29105, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 29110, 29113,
-    29117, 29121, 29125, 29129, 29133, 29137, 29141, 29145, 29149, 29153,
-    29157, 29161, 29165, 29169, 29173, 29177, 29180, 29184, 29188, 29192,
-    29196, 29200, 29204, 29208, 29212, 29216, 29220, 29224, 29228, 29232,
-    29235, 29238, 29241, 29245, 29251, 29257, 29263, 29269, 29275, 29281,
-    29287, 29293, 29299, 29305, 29311, 29317, 29323, 29329, 29338, 29347,
-    29353, 29359, 29365, 29370, 29374, 29379, 29384, 29389, 29393, 29398,
-    29403, 29408, 29412, 29417, 29421, 29426, 29431, 29436, 29441, 29445,
-    29449, 29453, 29457, 29461, 29465, 29469, 29473, 29477, 29481, 29487,
-    29491, 29495, 29499, 29503, 29507, 29515, 29521, 29525, 29531, 29535,
-    29541, 29545, 0, 0, 29549, 29553, 29556, 29559, 29562, 29565, 29568,
-    29571, 29574, 29577, 0, 0, 0, 0, 0, 0, 29580, 29588, 29596, 29604, 29612,
-    29620, 29628, 29636, 29644, 29652, 0, 0, 0, 0, 0, 0, 29660, 29663, 29666,
-    29669, 29674, 29677, 29682, 29689, 29697, 29702, 29709, 29712, 29719,
-    29726, 29733, 29737, 29744, 29748, 29751, 29754, 29757, 29760, 29763,
-    29766, 29769, 29772, 0, 0, 0, 0, 0, 0, 29775, 29778, 29781, 29784, 29787,
-    29790, 29794, 29798, 29802, 29805, 29809, 29813, 29816, 29820, 29824,
-    29827, 29830, 29833, 29837, 29841, 29845, 29849, 29853, 29856, 29859,
-    29863, 29867, 29870, 29874, 29878, 29882, 29886, 29890, 29894, 29898,
-    29902, 29909, 29914, 29919, 29924, 29929, 29935, 29941, 29947, 29953,
-    29958, 29964, 29970, 29975, 29981, 29987, 29993, 29999, 30005, 30010,
-    30016, 30021, 30027, 30033, 30039, 30045, 30051, 30056, 30061, 30067,
-    30073, 30078, 30084, 30089, 30095, 30100, 30105, 30111, 30117, 30123,
-    30129, 30135, 30141, 30147, 30153, 30159, 30165, 30171, 30177, 30182,
-    30187, 30192, 30198, 30204, 0, 0, 0, 0, 0, 0, 0, 30212, 30221, 30230,
-    30238, 30246, 30256, 30264, 30273, 30280, 30287, 30294, 30302, 30310,
-    30318, 30326, 30334, 30342, 30350, 30358, 30365, 30373, 30381, 30389,
-    30397, 30405, 30415, 30425, 30435, 30445, 30455, 30465, 30475, 30485,
-    30495, 30505, 30515, 30525, 30535, 30545, 30553, 30561, 30571, 30579, 0,
-    0, 0, 0, 0, 30589, 30593, 30597, 30601, 30605, 30609, 30613, 30617,
-    30621, 30625, 30629, 30633, 30637, 30641, 30645, 30649, 30653, 30657,
-    30661, 30665, 30669, 30673, 30677, 30681, 30687, 30691, 30697, 30701,
-    30707, 30711, 30717, 30721, 30725, 30729, 30733, 30737, 30741, 30747,
-    30753, 30759, 30765, 30771, 30777, 30783, 30789, 30795, 30801, 30807,
-    30814, 30820, 30826, 30832, 30836, 30840, 30844, 30848, 30852, 30856,
-    30860, 30866, 30872, 30878, 30883, 30890, 30895, 30900, 30906, 30911,
-    30918, 30925, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30932, 30938, 30942, 30947,
-    30952, 30957, 30962, 30967, 30972, 30977, 30982, 30987, 30992, 30997,
-    31002, 31007, 31011, 31015, 31020, 31025, 31030, 31034, 31038, 31042,
-    31046, 31051, 31056, 31061, 31065, 31069, 31074, 0, 31079, 31084, 31089,
-    31094, 31100, 31106, 31112, 31118, 31123, 31128, 31134, 31140, 0, 0, 0,
-    0, 31147, 31152, 31158, 31164, 31170, 31175, 31180, 31185, 31190, 31195,
-    31200, 31205, 0, 0, 0, 0, 31210, 0, 0, 0, 31215, 31220, 31225, 31230,
-    31234, 31238, 31242, 31246, 31250, 31254, 31258, 31262, 31266, 31271,
-    31277, 31283, 31289, 31294, 31299, 31305, 31311, 31316, 31321, 31327,
-    31332, 31338, 31344, 31349, 31355, 31361, 31367, 31372, 31377, 31382,
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-    60311, 60316, 60321, 60326, 60331, 60336, 60341, 60346, 60351, 60356,
-    60361, 60366, 60371, 60376, 60381, 60387, 60392, 60398, 60407, 60412,
-    60420, 60427, 60436, 60441, 60446, 60451, 60457, 60464, 60471, 60479,
-    60487, 60496, 60503, 60511, 60517, 60526, 60534, 60542, 60550, 60558,
-    60566, 60574, 60579, 60586, 60591, 60597, 60605, 60612, 60619, 60627,
-    60633, 60639, 60646, 60654, 60663, 60673, 60679, 60686, 60691, 60701,
-    60711, 60716, 60721, 60726, 60731, 60736, 60741, 60746, 60751, 60756,
-    60761, 60766, 60771, 60776, 60781, 60786, 60791, 60796, 60801, 60806,
-    60811, 60816, 60821, 60826, 60831, 60836, 60841, 60846, 60851, 60856,
-    60861, 60865, 60869, 60874, 60879, 60884, 60889, 60894, 60899, 60904,
-    60909, 60914, 60919, 60924, 60929, 60934, 60939, 60944, 60949, 60954,
-    60959, 60966, 60973, 60980, 60987, 60994, 61001, 61008, 61015, 61022,
-    61029, 61036, 61043, 61050, 61057, 61062, 61067, 61074, 61081, 61088,
-    61095, 61102, 61109, 61116, 61123, 61130, 61137, 61144, 61151, 61157,
-    61163, 61169, 61175, 61182, 61189, 61196, 61203, 61210, 61217, 61224,
-    61231, 61238, 61245, 61253, 61261, 61269, 61277, 61285, 61293, 61301,
-    61309, 61313, 61319, 61325, 61329, 61335, 61341, 61347, 61354, 61361,
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-    61423, 61432, 61440, 61446, 61451, 61456, 61461, 61466, 61471, 61476,
-    61481, 61486, 61491, 61496, 61501, 61506, 61511, 61516, 61521, 61526,
-    61531, 61536, 61541, 61546, 61551, 61556, 61561, 61566, 61571, 61576,
-    61581, 61586, 61591, 61596, 61601, 61606, 61611, 61616, 61621, 61626,
-    61631, 61636, 61641, 0, 61646, 0, 0, 0, 0, 0, 61651, 0, 0, 61656, 61660,
-    61665, 61670, 61675, 61680, 61689, 61694, 61699, 61704, 61709, 61714,
-    61719, 61724, 61729, 61736, 61741, 61746, 61755, 61762, 61767, 61772,
-    61777, 61784, 61789, 61796, 61801, 61806, 61813, 61820, 61825, 61830,
-    61835, 61842, 61849, 61854, 61859, 61864, 61869, 61874, 61881, 61888,
-    61893, 61898, 61903, 61908, 61913, 61918, 61923, 61928, 61933, 61938,
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-    62184, 0, 62188, 62192, 62196, 62200, 62204, 62208, 62212, 0, 62216,
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-    0, 62300, 62305, 62310, 62315, 62320, 62325, 62330, 62334, 62339, 62344,
-    62349, 62353, 62358, 62363, 62368, 62373, 62377, 62382, 62387, 62392,
-    62397, 62402, 62407, 62411, 62416, 62421, 62428, 62433, 62438, 62444,
-    62451, 62458, 62467, 62474, 62483, 62488, 62493, 62500, 62507, 62513,
-    62521, 62527, 62532, 62537, 62541, 62548, 62555, 62559, 62561, 62565,
-    62571, 62573, 62577, 62581, 62585, 62591, 62596, 62600, 62604, 62609,
-    62615, 62621, 62627, 62632, 62637, 62644, 62651, 62657, 62663, 62669,
-    62675, 62681, 62687, 62691, 62695, 62702, 62709, 62715, 62719, 62724,
-    62727, 62731, 62738, 62741, 62745, 62749, 62752, 62758, 62764, 62767,
-    62773, 62777, 62781, 62787, 62792, 62797, 62799, 62802, 62806, 62812,
-    62818, 62822, 62827, 62836, 62839, 62845, 62850, 62854, 62858, 62862,
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-    63821, 63825, 63829, 63833, 63837, 63841, 63845, 63849, 63853, 63857,
-    63863, 63867, 63871, 63875, 63879, 63883, 63887, 63891, 63895, 63900,
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-    63992, 63995, 63999, 64003, 64007, 64011, 64015, 64019, 64023, 64027,
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-    102064, 102069, 102074, 102079, 102084, 102089, 102094, 102099, 102104,
-    102109, 102114, 102119, 102124, 102129, 102134, 102139, 102144, 102149,
-    102154, 102159, 102164, 102169, 102174, 102179, 102184, 102189, 102194,
-    102199, 102204, 102209, 102214, 102219, 102224, 102229, 102234, 102239,
-    102244, 102249, 102254, 102259, 102264, 102269, 102274, 102279, 102284,
-    102289, 102294, 102299, 102304, 102309, 102314, 102319, 102324, 102329,
-    102334, 102339, 102344, 102349, 102354, 102359, 102364, 102369, 102374,
-    102379, 102384, 102389, 102394, 102399, 102404, 102409, 102414, 102419,
-    102424, 102429, 102434, 102439, 102444, 102449, 102454, 102459, 102464,
-    102469, 102474, 102479, 102484, 102489, 102494, 102499, 102504, 102509,
-    102514, 102519, 102524, 102529, 102534, 102539, 102544, 102549, 102554,
-    102559, 102564, 102569, 102574, 102579, 102584, 102589, 102594, 102599,
-    102604, 102609, 102614, 102619, 102624, 102629, 102634, 102639, 102644,
-    102649, 102654, 102659, 102664, 102669, 102674, 102679, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 102684, 102690, 102697, 102704, 102710, 102717, 102724, 102731,
-    102738, 102744, 102751, 102758, 102765, 102772, 102779, 102786, 102793,
-    102800, 102807, 102814, 102821, 102828, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    102835, 102840, 102845, 102850, 102855, 102860, 102865, 102870, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 102875,
-    102881, 102889, 102898, 102903, 102909, 0, 102915, 102922, 102933,
-    102943, 102950, 102958, 102965, 102976, 102982, 102992, 102999, 103006,
-    103012, 103019, 103027, 103034, 103040, 103047, 103059, 103066, 103073,
-    103081, 103090, 103103, 103108, 103117, 103123, 103132, 103138, 103144,
-    103151, 103156, 103166, 103180, 103188, 103196, 103201, 103211, 103218,
-    103229, 103236, 103245, 0, 103253, 103259, 103267, 103277, 103283,
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-    0, 0, 0, 0, 0, 0, 0, 103319, 103323, 103327, 103331, 103335, 103339, 0,
-    0, 103344, 0, 103349, 103353, 103358, 103363, 103368, 103373, 103377,
-    103382, 103387, 103392, 103397, 103401, 103406, 103411, 103416, 103421,
-    103425, 103430, 103435, 103440, 103445, 103449, 103454, 103459, 103464,
-    103469, 103473, 103478, 103483, 103488, 103493, 103497, 103502, 103507,
-    103512, 103517, 103522, 103527, 103532, 103536, 103541, 103546, 103551,
-    103556, 0, 103561, 103566, 0, 0, 0, 103571, 0, 0, 103576, 103581, 103588,
-    103595, 103602, 103609, 103616, 103623, 103630, 103637, 103644, 103651,
-    103658, 103665, 103672, 103679, 103686, 103693, 103700, 103707, 103714,
-    103721, 103728, 0, 103735, 103742, 103748, 103754, 103760, 103767,
-    103774, 103782, 103789, 103797, 103802, 103807, 103812, 103817, 103822,
-    103827, 103832, 103837, 103842, 103847, 103852, 103857, 103862, 103868,
-    103873, 103878, 103883, 103888, 103893, 103898, 103903, 103908, 103913,
-    103919, 103925, 103929, 103933, 103937, 103941, 103945, 103950, 103955,
-    103961, 103966, 103972, 103977, 103982, 103987, 103993, 103998, 104003,
-    104008, 104013, 104018, 104024, 104029, 104035, 104040, 104046, 104051,
-    104057, 104062, 104068, 104073, 104078, 104083, 104088, 104093, 104098,
-    104103, 104109, 104114, 0, 0, 0, 0, 0, 0, 0, 0, 104119, 104123, 104127,
-    104131, 104135, 104141, 104145, 104150, 104155, 0, 0, 0, 0, 0, 0, 0, 0,
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-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 104161, 104166, 104171,
-    104176, 104181, 104186, 104191, 104196, 104201, 104206, 104211, 104216,
-    104221, 104226, 104231, 104236, 104241, 104246, 104251, 0, 104256,
-    104261, 0, 0, 0, 0, 0, 104266, 104270, 104274, 104279, 104284, 104290,
-    104295, 104300, 104305, 104310, 104315, 104320, 104325, 104330, 104335,
-    104340, 104345, 104350, 104355, 104360, 104365, 104370, 104375, 104380,
-    104385, 104390, 104395, 104400, 104404, 104409, 104414, 104420, 104424,
-    0, 0, 0, 104428, 104434, 104438, 104443, 104448, 104453, 104457, 104462,
-    104466, 104471, 104476, 104480, 104485, 104490, 104494, 104498, 104503,
-    104508, 104512, 104517, 104522, 104527, 104532, 104537, 104542, 104547,
-    104552, 0, 0, 0, 0, 0, 104557, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 104562, 104567, 104572, 104577, 104582, 104587, 104593, 104599,
-    104605, 104610, 104615, 104620, 104626, 104632, 104638, 104643, 104649,
-    104654, 104660, 104666, 104671, 104677, 104683, 104688, 104694, 104700,
-    104706, 104712, 104718, 104723, 104729, 104735, 104741, 104746, 104751,
-    104756, 104761, 104766, 104772, 104778, 104783, 104788, 104793, 104799,
-    104804, 104809, 104815, 104821, 104826, 104833, 104839, 104844, 104850,
-    104856, 104862, 104867, 0, 0, 0, 0, 104873, 104882, 104890, 104897,
-    104904, 104909, 104914, 104919, 104924, 104929, 104934, 104939, 104944,
-    104949, 104955, 104961, 104967, 104973, 104979, 104985, 0, 0, 104991,
-    104998, 105005, 105012, 105020, 105028, 105036, 105044, 105052, 105060,
-    105066, 105072, 105078, 105085, 105092, 105099, 105106, 105113, 105120,
-    105127, 105134, 105141, 105148, 105155, 105162, 105169, 105176, 105183,
-    105191, 105199, 105207, 105216, 105225, 105234, 105243, 105252, 105261,
-    105269, 105277, 105285, 105294, 105303, 105312, 105321, 105330, 105339,
-    105348, 105352, 105357, 105362, 0, 105368, 105373, 0, 0, 0, 0, 0, 105378,
-    105384, 105391, 105396, 105401, 105405, 105410, 105415, 0, 105420,
-    105425, 105430, 0, 105435, 105440, 105445, 105450, 105455, 105460,
-    105465, 105470, 105475, 105480, 105485, 105489, 105493, 105498, 105503,
-    105508, 105512, 105516, 105520, 105524, 105529, 105534, 105539, 105543,
-    105548, 105552, 105557, 105562, 105567, 0, 0, 105572, 105578, 105583, 0,
-    0, 0, 0, 105588, 105592, 105596, 105600, 105604, 105608, 105613, 105618,
-    105624, 105629, 0, 0, 0, 0, 0, 0, 0, 105636, 105642, 105649, 105655,
-    105662, 105668, 105674, 105680, 105687, 0, 0, 0, 0, 0, 0, 0, 105693,
-    105701, 105709, 105717, 105725, 105733, 105741, 105749, 105757, 105765,
-    105773, 105781, 105789, 105797, 105805, 105813, 105821, 105829, 105837,
-    105845, 105853, 105861, 105869, 105877, 105885, 105893, 105901, 105909,
-    105917, 105925, 105932, 105940, 105948, 105955, 105962, 105969, 105976,
-    105983, 105990, 105997, 106004, 106011, 106018, 106025, 106032, 106039,
-    106046, 106053, 106060, 106067, 106074, 106081, 106088, 106095, 106102,
-    106109, 106116, 106123, 106130, 106137, 106144, 106151, 106157, 106164,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 106171, 106176, 106181, 106186, 106191, 106196,
-    106201, 106206, 106211, 106216, 106221, 106226, 106231, 106236, 106241,
-    106246, 106251, 106256, 106261, 106266, 106271, 106276, 106281, 106286,
-    106291, 106296, 106301, 106306, 106311, 106316, 106321, 106326, 106331,
-    106336, 106341, 106346, 106351, 106356, 106362, 0, 0, 0, 0, 106368,
-    106372, 106376, 106381, 106386, 106392, 106398, 106404, 106414, 106423,
-    106429, 106436, 0, 0, 0, 0, 0, 0, 0, 0, 0, 106444, 106448, 106453,
-    106458, 106463, 106468, 106473, 106478, 106483, 106487, 106492, 106496,
-    106501, 106505, 106510, 106514, 106519, 106524, 106529, 106534, 106539,
-    106544, 106549, 106554, 106559, 106564, 106569, 106574, 106579, 106584,
-    106589, 106594, 106599, 106604, 106609, 106614, 106619, 106624, 106629,
-    106634, 106639, 106644, 106649, 106654, 106659, 106664, 106669, 106674,
-    106679, 106684, 106689, 106694, 106699, 106704, 0, 0, 0, 106709, 106714,
-    106723, 106731, 106740, 106749, 106760, 106771, 106778, 106785, 106792,
-    106799, 106806, 106813, 106820, 106827, 106834, 106841, 106848, 106855,
-    106862, 106869, 106876, 106883, 106890, 106897, 106904, 106911, 106918,
-    0, 0, 106925, 106931, 106937, 106943, 106949, 106956, 106963, 106971,
-    106978, 106985, 106992, 106999, 107006, 107013, 107020, 107027, 107034,
-    107041, 107048, 107055, 107062, 107069, 107076, 107083, 107090, 107097,
-    107104, 0, 0, 0, 0, 0, 107111, 107117, 107123, 107129, 107135, 107142,
-    107149, 107157, 107164, 107171, 107178, 107185, 107192, 107199, 107206,
-    107213, 107220, 107227, 107234, 107241, 107248, 107255, 107262, 107269,
-    107276, 107283, 0, 0, 0, 0, 0, 0, 0, 107290, 107297, 107305, 107315, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 107325, 107331, 107337, 107343, 107349,
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-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 107371, 107378, 107385, 107393,
-    107400, 107407, 107414, 107421, 107429, 107437, 107445, 107453, 107461,
-    107469, 107477, 107485, 107493, 107501, 107509, 107517, 107525, 107533,
-    107541, 107549, 107557, 107565, 107573, 107581, 107589, 107597, 107605,
-    107613, 107621, 107629, 107637, 107645, 107653, 107661, 107669, 107677,
-    107685, 107693, 107701, 107709, 107717, 107725, 107733, 107741, 107749,
-    107757, 107765, 107773, 107781, 107789, 107797, 107805, 107813, 107821,
-    107829, 107837, 107845, 107853, 107861, 107869, 107877, 107885, 107893,
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-    107949, 107954, 107960, 107966, 107972, 107978, 107984, 107990, 107996,
-    108002, 108007, 108014, 108020, 108026, 108032, 108038, 108044, 108049,
-    108055, 108061, 108067, 108073, 108079, 108085, 108091, 108097, 108103,
-    108109, 108114, 108120, 108128, 108136, 108142, 108148, 108154, 108160,
-    108168, 108174, 108180, 108186, 108192, 108198, 108204, 108209, 108215,
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-    108303, 108309, 108315, 108320, 108327, 108333, 108339, 108345, 108351,
-    108357, 108362, 108368, 108374, 108380, 108386, 108392, 108398, 108404,
-    108410, 108416, 108422, 108427, 108433, 108441, 108449, 108455, 108461,
-    108467, 108473, 108481, 108487, 108493, 108499, 108505, 108511, 108517,
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-    0, 0, 0, 0, 108575, 108579, 108583, 108588, 108593, 108599, 108604,
-    108610, 108617, 108623, 108630, 108637, 108644, 108651, 108657, 108664,
-    108671, 108678, 108685, 108691, 108698, 108705, 108711, 108718, 108724,
-    108731, 108737, 108743, 108749, 108756, 108765, 108771, 108779, 108786,
-    108793, 108800, 108806, 108812, 108818, 108824, 108830, 108837, 108846,
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-    108947, 108951, 108955, 108959, 108963, 108967, 108971, 108976, 108981,
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-    109034, 109041, 109048, 109055, 109062, 109069, 109076, 109083, 109090,
-    109097, 0, 109104, 109109, 109114, 109119, 109124, 109129, 109134,
-    109139, 109144, 109149, 109154, 109159, 109164, 109169, 109173, 109178,
-    109183, 109188, 109193, 109198, 109203, 109208, 109213, 109218, 109223,
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-    109276, 109281, 109286, 109291, 109296, 109301, 109306, 109311, 0,
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-    109422, 109428, 109434, 109440, 109446, 109452, 109458, 109464, 109471,
-    109482, 109488, 109494, 109502, 109508, 109514, 109521, 109532, 109538,
-    109544, 109550, 109557, 109568, 109573, 109578, 109583, 109588, 109593,
-    109599, 109605, 109611, 109618, 109626, 0, 0, 0, 0, 0, 0, 0, 0, 109632,
-    109637, 109642, 109647, 109652, 109657, 109662, 109667, 109672, 109677,
-    109682, 109687, 109692, 109697, 109702, 109707, 109712, 109717, 109722,
-    109727, 109732, 109737, 109743, 109748, 109754, 109759, 109765, 109771,
-    109777, 109783, 109789, 109796, 109802, 109808, 109812, 109817, 109822,
-    109828, 109836, 109847, 109856, 109866, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 109876, 109882, 109888, 109894, 109900,
-    109906, 109913, 109919, 109925, 109931, 109937, 109943, 109949, 109955,
-    109961, 109967, 109973, 109979, 109985, 109991, 109997, 110004, 110011,
-    110017, 110025, 110033, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 110042,
-    110047, 110053, 110058, 110063, 110068, 110073, 110078, 110085, 110090,
-    110095, 110100, 110105, 110110, 110115, 110120, 110125, 110130, 110135,
-    110140, 110145, 110150, 110154, 110158, 110162, 110166, 110171, 110176,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 110182,
-    110187, 110192, 110197, 110202, 110207, 110212, 110217, 110222, 110227,
-    110232, 110237, 110242, 110247, 110252, 110257, 110262, 110267, 110272,
-    110277, 110282, 110287, 110292, 0, 0, 0, 0, 0, 0, 0, 0, 0, 110297,
-    110301, 110305, 110309, 110313, 110317, 110320, 110324, 110327, 110331,
-    110334, 110338, 110342, 110347, 110351, 110356, 110359, 110363, 110366,
-    110370, 110373, 110377, 110381, 110385, 110389, 110393, 110397, 110401,
-    110405, 110409, 110413, 110417, 110421, 110425, 110429, 110433, 110437,
-    110441, 110445, 110448, 110451, 110455, 110459, 110463, 110466, 110469,
-    110472, 110475, 110479, 110483, 110487, 110490, 110493, 110497, 110503,
-    110509, 110515, 110520, 110527, 110531, 110536, 110540, 110545, 110550,
-    110556, 110561, 110567, 110571, 110576, 110580, 110585, 110588, 110591,
-    110595, 110600, 110606, 110611, 110617, 0, 0, 0, 0, 110622, 110625,
-    110628, 110631, 110634, 110637, 110640, 110643, 110646, 110649, 110653,
-    110657, 110661, 110665, 110669, 110673, 110677, 110681, 110685, 110690,
-    110694, 110698, 110701, 110704, 110707, 110710, 110713, 110716, 110719,
-    110722, 110725, 110731, 110738, 110745, 110753, 110761, 0, 0, 0, 0, 0, 0,
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-    110804, 110808, 110813, 110817, 110822, 110826, 110831, 110835, 110840,
-    110845, 110850, 110855, 110860, 110865, 110870, 110875, 110880, 110885,
-    110890, 110895, 110900, 110905, 110910, 110915, 110920, 110925, 110930,
-    110935, 110939, 110943, 110948, 110953, 110958, 110962, 110966, 110970,
-    110974, 110979, 110984, 110989, 110993, 110997, 111003, 111008, 111014,
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-    187517, 187520, 187523, 187526, 187529, 187532, 187535, 187538, 187541,
-    187544, 187547, 187550, 187553, 187556, 187559, 187571, 187582, 187594,
-    187605, 187616, 187628, 187639, 187651, 187662, 187673, 187685, 187697,
-    187708, 187720, 187731, 187742, 187754, 187765, 187777, 187788, 187799,
-    187811, 187823, 187834, 187846, 187857, 187868, 187880, 187891, 187903,
-    187914, 187925, 187937, 187949, 187960, 187972, 187983, 187994, 188006,
-    188017, 188029, 188040, 188051, 188063, 188075, 188087, 188099, 188111,
-    188119, 188127, 188135, 188143, 188149, 188155, 188161, 188167, 188173,
-    188179, 188186, 188193, 188200, 188207, 188214, 188221, 188229, 188237,
-    188245, 188253, 188261, 188268, 188274, 188280, 188287, 188293, 188300,
-    188306, 188312, 188319, 188325, 188332, 188338, 188344, 188350, 188356,
-    188362, 188374, 0, 188387, 188400, 188406, 188414, 188419, 188426,
-    188433, 188441, 188449, 188457, 188465, 188473, 188481, 188493, 188504,
-    188515, 188526, 188541, 188556, 188570, 188584, 188602, 188620, 188639,
-    188657, 188675, 188693, 188700, 188708, 188712, 188717, 188723, 188729,
-    188739, 188750, 188761, 188771, 188781, 188785, 188789, 188794, 188800,
-    188806, 188816, 188822, 188831, 188840, 188849, 188858, 188864, 188868,
-    188877, 188885, 188892, 188899, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    188904, 188909, 188913, 188917, 188921, 188925, 188929, 188933, 188937,
-    188941, 0, 0, 0, 0, 0, 0, 188945, 188949, 188953, 188957, 188961, 188965,
-    188969, 188973, 188977, 188981, 188985, 188989, 188993, 188997, 189001,
-    189005, 189009, 189013, 189017, 189021, 189025, 189029, 189033, 189037,
-    189041, 189045, 189049, 189053, 189057, 189061, 189065, 189069, 189073,
-    189077, 189081, 189085, 189089, 189093, 189097, 189101, 189105, 189109,
-    189113, 189117, 189121, 189125, 189129, 189133, 189137, 189141, 189145,
-    189149, 189153, 189157, 189161, 189165, 189169, 189173, 189177, 189181,
-    189185, 189189, 189193, 189197, 189201, 189205, 189209, 189213, 189217,
-    189221, 189225, 189229, 189233, 189237, 189241, 189245, 189249, 189253,
-    189257, 189261, 189265, 189269, 189273, 189277, 189281, 189285, 189289,
-    189293, 189297, 189301, 189305, 189309, 189313, 189317, 189321, 189325,
-    189329, 189333, 189337, 189341, 189345, 189349, 189353, 189357, 189361,
-    189365, 189369, 189373, 189377, 189381, 189385, 189389, 189393, 189397,
-    189401, 189405, 189409, 189413, 189417, 189421, 189425, 189429, 189433,
-    189437, 189441, 189445, 189449, 189453, 189457, 189461, 189465, 189469,
-    189473, 189477, 189481, 189485, 189489, 189493, 189497, 189501, 189505,
-    189509, 189513, 189517, 189521, 189525, 189529, 189533, 189537, 189541,
-    189545, 189549, 189553, 189557, 189561, 189565, 189569, 189573, 189577,
-    189581, 189585, 189589, 189593, 189597, 189601, 189605, 189609, 189613,
-    189617, 189621, 189625, 189629, 189633, 189637, 189641, 189645, 189649,
-    189653, 189657, 189661, 189665, 189669, 189673, 189677, 189681, 189685,
-    189689, 189693, 189697, 189701, 189705, 189709, 189713, 189717, 189721,
-    189725, 189729, 189733, 189737, 189741, 189745, 189749, 189753, 189757,
-    189761, 189765, 189769, 189773, 189777, 189781, 189785, 189789, 189793,
-    189797, 189801, 189805, 189809, 189813, 189817, 189821, 189825, 189829,
-    189833, 189837, 189841, 189845, 189849, 189853, 189857, 189861, 189865,
-    189869, 189873, 189877, 189881, 189885, 189889, 189893, 189897, 189901,
-    189905, 189909, 189913, 189917, 189921, 189925, 189929, 189933, 189937,
-    189941, 189945, 189949, 189953, 189957, 189961, 189965, 189969, 189973,
-    189977, 189981, 189985, 189989, 189993, 189997, 190001, 190005, 190009,
-    190013, 190017, 190021, 190025, 190029, 190033, 190037, 190041, 190045,
-    190049, 190053, 190057, 190061, 190065, 190069, 190073, 190077, 190081,
-    190085, 190089, 190093, 190097, 190101, 190105, 190109, 190113, 190117,
-    190121, 190125, 190129, 190133, 190137, 190141, 190145, 190149, 190153,
-    190157, 190161, 190165, 190169, 190173, 190177, 190181, 190185, 190189,
-    190193, 190197, 190201, 190205, 190209, 190213, 190217, 190221, 190225,
-    190229, 190233, 190237, 190241, 190245, 190249, 190253, 190257, 190261,
-    190265, 190269, 190273, 190277, 190281, 190285, 190289, 190293, 190297,
-    190301, 190305, 190309, 190313, 190317, 190321, 190325, 190329, 190333,
-    190337, 190341, 190345, 190349, 190353, 190357, 190361, 190365, 190369,
-    190373, 190377, 190381, 190385, 190389, 190393, 190397, 190401, 190405,
-    190409, 190413, 190417, 190421, 190425, 190429, 190433, 190437, 190441,
-    190445, 190449, 190453, 190457, 190461, 190465, 190469, 190473, 190477,
-    190481, 190485, 190489, 190493, 190497, 190501, 190505, 190509, 190513,
-    190517, 190521, 190525, 190529, 190533, 190537, 190541, 190545, 190549,
-    190553, 190557, 190561, 190565, 190569, 190573, 190577, 190581, 190585,
-    190589, 190593, 190597, 190601, 190605, 190609, 190613, 190617, 190621,
-    190625, 190629, 190633, 190637, 190641, 190645, 190649, 190653, 190657,
-    190661, 190665, 190669, 190673, 190677, 190681, 190685, 190689, 190693,
-    190697, 190701, 190705, 190709, 190713, 190717, 190721, 190725, 190729,
-    190733, 190737, 190741, 190745, 190749, 190753, 190757, 190761, 190765,
-    190769, 190773, 190777, 190781, 190785, 190789, 190793, 190797, 190801,
-    190805, 190809, 190813, 190817, 190821, 190825, 190829, 190833, 190837,
-    190841, 190845, 190849, 190853, 190857, 190861, 190865, 190869, 190873,
-    190877, 190881, 190885, 190889, 190893, 190897, 190901, 190905, 190909,
-    190913, 190917, 190921, 190925, 190929, 190933, 190937, 190941, 190945,
-    190949, 190953, 190957, 190961, 190965, 190969, 190973, 190977, 190981,
-    190985, 190989, 190993, 190997, 191001, 191005, 191009, 191013, 191017,
-    191021, 191025, 191029, 191033, 191037, 191041, 191045, 191049, 191053,
-    191057, 191061, 191065, 191069, 191073, 191077, 191081, 191085, 191089,
-    191093, 191097, 191101, 191105, 191109, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 191113, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    191117, 191121, 191126, 191131, 191135, 191140, 191145, 191149, 191153,
-    191158, 191163, 191167, 191171, 191175, 191179, 191185, 191189, 191194,
-    191198, 191202, 191206, 191210, 191214, 191218, 191222, 191226, 191230,
-    191234, 191238, 191243, 191248, 191253, 191258, 191264, 191270, 191277,
-    191284, 191291, 191297, 191304, 191311, 191318, 191324, 191331, 191338,
-    191344, 191351, 191358, 191364, 191371, 191378, 191384, 191391, 191398,
-    191404, 191411, 191418, 191425, 191432, 191439, 191445, 191451, 191457,
-    191463, 191468, 191474, 191480, 191487, 191494, 191501, 191507, 191514,
-    191521, 191528, 191534, 191541, 191548, 191554, 191561, 191568, 191574,
-    191581, 191588, 191594, 191601, 191608, 191614, 191621, 191628, 191635,
-    191642, 191649, 191656, 191661, 191668, 191672, 191676, 191679, 191682,
-    191685, 191688, 191691, 191694, 191697, 191700, 191703, 191706, 191709,
-    191712, 191715, 191718, 191721, 191724, 191727, 191730, 191733, 191736,
-    191739, 191742, 191745, 191748, 191751, 191754, 191757, 191760, 191763,
-    191766, 191769, 191772, 191775, 191778, 191781, 191784, 191787, 191790,
-    191793, 191796, 191799, 191802, 191805, 191808, 191811, 191814, 191817,
-    191820, 191823, 191826, 191829, 191832, 191835, 191838, 191841, 191844,
-    191847, 191850, 191853, 191856, 191859, 191862, 191865, 191868, 191871,
-    191874, 191877, 191880, 191883, 191886, 191889, 191892, 191895, 191898,
-    191901, 191904, 191907, 191910, 191913, 191916, 191919, 191922, 191925,
-    191928, 191931, 191934, 191937, 191940, 191943, 191946, 191949, 191952,
-    191955, 191958, 191961, 191964, 191967, 191970, 191973, 191976, 191979,
-    191982, 191985, 191988, 191991, 191994, 191997, 192000, 192003, 192006,
-    192009, 192012, 192015, 192018, 192021, 192024, 192027, 192030, 192033,
-    192036, 192039, 192042, 192045, 192048, 192051, 192054, 192057, 192060,
-    192063, 192066, 192069, 192072, 192075, 192078, 192081, 192084, 192087,
-    192090, 192093, 192096, 192099, 192102, 192105, 192108, 192111, 192114,
-    192117, 192120, 192123, 192126, 192129, 192132, 192135, 192138, 192141,
-    192144, 192147, 192150, 192153, 192156, 192159, 192162, 192165, 192168,
-    192171, 192174, 192177, 192180, 192183, 192186, 192189, 192192, 192195,
-    192198, 192201, 192204, 192207, 192210, 192213, 192216, 192219, 192222,
-    192225, 192228, 192231, 192234, 192237, 192240, 192243, 192246, 192249,
-    192252, 192255, 192258, 192261, 192264, 192267, 192270, 192273, 192276,
-    192279, 192282, 192285, 192288, 192291, 192294, 192297, 192300, 192303,
-    192306, 192309, 192312, 192315, 192318, 192321, 192324, 192327, 192330,
-    192333, 192336, 192339, 192342, 192345, 192348, 192351, 192354, 192357,
-    192360, 192363, 192366, 192369, 192372, 192375, 192378, 192381, 192384,
-    192387, 192390, 192393, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    192396, 192398, 192400, 192405, 192407, 192412, 192414, 192419, 192421,
-    192426, 192428, 192430, 192432, 192434, 192436, 192438, 192440, 192442,
-    192444, 192448, 192452, 192454, 192456, 192460, 192464, 192469, 192471,
-    192473, 192475, 192479, 192482, 192484, 192488, 192490, 192494, 192496,
-    192500, 192503, 192505, 192509, 192513, 192515, 192521, 192523, 192528,
-    192530, 192535, 192537, 192542, 192544, 192549, 192551, 192555, 192557,
-    192561, 192563, 192570, 192572, 192574, 192576, 192581, 192583, 192585,
-    192587, 192589, 192591, 192593, 192598, 192602, 192604, 192609, 192613,
-    192615, 192620, 192624, 192626, 192631, 192635, 192637, 192639, 192641,
-    192643, 192647, 192649, 192654, 192656, 192662, 192664, 192670, 192672,
-    192674, 192676, 192680, 192682, 192689, 192691, 192698, 192700, 192706,
-    192712, 192714, 192721, 192728, 192730, 192736, 192741, 192743, 192749,
-    192755, 192757, 192763, 192769, 192771, 192777, 192781, 192783, 192788,
-    192790, 192792, 192797, 192799, 192801, 192807, 192809, 192814, 192818,
-    192820, 192825, 192829, 192831, 192837, 192839, 192843, 192845, 192849,
-    192851, 192858, 192865, 192867, 192874, 192881, 192883, 192888, 192890,
-    192898, 192900, 192906, 192908, 192914, 192916, 192920, 192922, 192928,
-    192930, 192934, 192936, 192942, 192944, 192946, 192948, 192953, 192958,
-    192960, 192969, 192971, 192981, 192986, 192993, 193000, 193005, 193010,
-    193022, 193026, 193030, 193034, 193038, 193040, 193042, 193044, 193046,
-    193048, 193054, 193056, 193058, 193060, 193062, 193064, 193066, 193068,
-    193070, 193072, 193074, 193076, 193078, 193080, 193082, 193084, 193086,
-    193088, 193094, 193101, 193106, 193114, 193122, 193127, 193133, 193135,
-    193137, 193139, 193141, 193143, 193145, 193147, 193149, 193151, 193153,
-    193155, 193157, 193159, 193161, 193163, 193165, 193177, 193182, 193184,
-    193186, 193192, 193204, 193210, 193216, 193222, 193228, 193232, 193243,
-    193245, 193247, 193249, 193251, 193253, 193255, 193257, 193259, 193261,
-    193263, 193265, 193267, 193269, 193271, 193273, 193275, 193277, 193279,
-    193281, 193283, 193285, 193287, 193289, 193291, 193293, 193295, 193297,
-    193299, 193301, 193303, 193305, 193307, 193309, 193311, 193313, 193315,
-    193317, 193319, 193321, 193323, 193325, 193327, 193329, 193331, 193333,
-    193335, 193337, 193339, 193341, 193343, 193345, 193347, 193349, 193351,
-    193353, 193355, 193357, 193359, 193361, 193363, 193365, 193367, 193369,
-    193371, 193373, 193375, 193377, 193379, 193381, 193383, 193385, 193387,
-    193389, 193391, 193393, 193395, 193397, 193399, 193401, 193403, 193405,
-    193407, 193409, 193411, 193413, 193415, 193417, 193419, 193421, 193423,
-    193425, 193427, 193429, 193431, 193433, 193435, 193437, 193439, 193441,
-    193443, 193445, 193447, 193449, 193451, 193453, 193455, 193457, 193459,
-    193461, 193463, 193465, 193467, 193469, 193471, 193473, 193475, 193477,
-    193479, 193481, 193483, 193485, 193487, 193489, 193491, 193493, 193495,
-    193497, 193499, 193501, 193503, 193505, 193507, 193509, 193511, 193513,
-    193515, 193517, 193519, 193521, 193523, 193525, 193527, 193529, 193531,
-    193533, 193535, 193537, 193539, 193541, 193543, 193545, 193547, 193549,
-    193551, 193553, 193555, 193557, 193559, 193561, 193563, 193565, 193567,
-    193569, 193571, 193573, 193575, 193577, 193579, 193581, 193583, 193585,
-    193587, 193589, 193591, 193593, 193595, 193597, 193599, 193601, 193603,
-    193605, 193607, 193609, 193611, 193613, 193615, 193617, 193619, 193621,
-    193623, 193625, 193627, 193629, 193631, 193633, 193635, 193637, 193639,
-    193641, 193643, 193645, 193647, 193649, 193651, 193653, 193655, 193657,
-    193659, 193661, 193663, 193665, 193667, 193669, 193671, 193673, 193675,
-    193677, 193679, 193681, 193683, 193685, 193687, 193689, 193691, 193693,
-    193695, 193697, 193699, 193701, 193703, 193705, 193707, 193709, 193711,
-    193713, 193715, 193717, 193719, 193721, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 193723, 193727, 193731, 193736, 193740, 193744, 193748,
-    193752, 193756, 193760, 193764, 193768, 193772, 193782, 193792, 193803,
-    193814, 193824, 193834, 193844, 193854, 193868, 193882, 193896, 193910,
-    193919, 193928, 193941, 193954, 193967, 193980, 193990, 194000, 194011,
-    194022, 194033, 194044, 194055, 194064, 194074, 194084, 194094, 194104,
-    194115, 194126, 194137, 194148, 194159, 194170, 194181, 194192, 194203,
-    194214, 194225, 194239, 194250, 194264, 194272, 194283, 194291, 194299,
-    194307, 194315, 194323, 194331, 194341, 194351, 194361, 194371, 194381,
-    194391, 194401, 194411, 194419, 194428, 194437, 194446, 194455, 194463,
-    194471, 194481, 194491, 194502, 194513, 194525, 194536, 194546, 194557,
-    194567, 194578, 194586, 194593, 194600, 194607, 194614, 194621, 194628,
-    194635, 194642, 194650, 194658, 194666, 194674, 194682, 194690, 194698,
-    194706, 194714, 194722, 194730, 194735, 194739, 194743, 194747, 194751,
-    194755, 194759, 194763, 194767, 194771, 194775, 194779, 194782, 194785,
-    194789, 194793, 194797, 194801, 194805, 194809, 194813, 194817, 194821,
-    194825, 194829, 194833, 194837, 194841, 194845, 194849, 194853, 194857,
-    194861, 194865, 194869, 194873, 194877, 194881, 194885, 194889, 194893,
-    194897, 194901, 194905, 194909, 194913, 194917, 194921, 194925, 194929,
-    194933, 194937, 194941, 194945, 194949, 194953, 194957, 194961, 194965,
-    194969, 194973, 194977, 194981, 194985, 194989, 194993, 194997, 195001,
-    195005, 195009, 195013, 195017, 195021, 195025, 195029, 195033, 195037,
-    195041, 195045, 195049, 195053, 195057, 195061, 195065, 195069, 195073,
-    195077, 195081, 195085, 195089, 195093, 195097, 195101, 195105, 195109,
-    195113, 195117, 195121, 195125, 195128, 195132, 195136, 195140, 195144,
-    195148, 195152, 195156, 195160, 195164, 195168, 195172, 195176, 195180,
-    195184, 195188, 195192, 195196, 195200, 195204, 195208, 195212, 195216,
-    195220, 195224, 195228, 195232, 195236, 195240, 195244, 195248, 195252,
-    195256, 195260, 195264, 195268, 195272, 195276, 195280, 195284, 195288,
-    195292, 195296, 195300, 195304, 195308, 195312, 195316, 195320, 195324,
-    195328, 195332, 195336, 195340, 195344, 195348, 195352, 195356, 195360,
-    195364, 195368, 195372, 195376, 195380, 195384, 195388, 195392, 195396,
-    195400, 195404, 195408, 195412, 195416, 195420, 195424, 195428, 195432,
-    195436, 195440, 195444, 195448, 195452, 195456, 195460, 195464, 195468,
-    195472, 195476, 195480, 195484, 195488, 195492, 195496, 195500, 195504,
-    195508, 195512, 195516, 195520, 195524, 195528, 195532, 195536, 195540,
-    195544, 195548, 195552, 195556, 195560, 195564, 195568, 195572, 195576,
-    195580, 195584, 195588, 195592, 195596, 195600, 195604, 195608, 195612,
-    195616, 195620, 195624, 195628, 195632, 195636, 195640, 195644, 195648,
-    195652, 195656, 195660, 195664, 195668, 195672, 195676, 195680, 195684,
-    195688, 195692, 195696, 195700, 195704, 195708, 195712, 195716, 195720,
-    195724, 195728, 195732, 195736, 195740, 195744, 195748, 195752, 195756,
-    195760, 195764, 195768, 195772, 195776, 195780, 195784, 195788, 195792,
-    195796, 195800, 195804, 195808, 195812, 195816, 195820, 195824, 195828,
-    195832, 195836, 195840, 195844, 195848, 195852, 195856, 195860, 195864,
-    195868, 195872, 195876, 195880, 195884, 195888, 195892, 195897, 195902,
-    195907, 195911, 195917, 195924, 195931, 195938, 195945, 195952, 195959,
-    195966, 195973, 195980, 195987, 195994, 196001, 196008, 196014, 196021,
-    196028, 196034, 196041, 196048, 196055, 196062, 196069, 196076, 196083,
-    196090, 196097, 196104, 196111, 196118, 196125, 196131, 196137, 196143,
-    196150, 196159, 196168, 196177, 196186, 196191, 196196, 196203, 196210,
-    196217, 196224, 196231, 196237, 196243, 196249, 196255, 196261, 196267,
-    196273, 196278, 196284, 196294, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-};
-
-/* name->code dictionary */
-static const unsigned int code_hash[] = {
-    74224, 4851, 0, 0, 0, 0, 7929, 0, 0, 0, 0, 127931, 0, 42833, 983091,
-    12064, 110752, 129548, 194597, 69850, 65842, 0, 0, 0, 78159, 68476,
-    72392, 1373, 0, 0, 5816, 0, 0, 4231, 0, 0, 4233, 4234, 4232, 68885,
-    70351, 0, 7404, 72393, 0, 0, 0, 0, 0, 41601, 8874, 0, 0, 0, 128498, 0, 0,
-    41603, 9784, 0, 9188, 41600, 0, 0, 0, 0, 3535, 0, 0, 0, 66797, 0, 74491,
-    0, 3404, 100419, 0, 72411, 1759, 100417, 0, 100418, 69972, 11240, 121038,
-    100416, 127764, 0, 0, 0, 0, 0, 69970, 0, 0, 9834, 43249, 2234, 983891, 0,
-    0, 0, 0, 92417, 0, 74398, 12035, 0, 983074, 43548, 0, 0, 0, 0, 0, 64318,
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-    9440, 9441, 9442, 9443, 9444, 9445, 9430, 9431, 9432, 9433, 9434, 9435,
-    9436, 9437, 983097, 0, 9424, 9425, 9426, 9427, 9428, 7481, 0, 2362, 9655,
-    0, 2004, 0, 9782, 0, 0, 0, 0, 0, 0, 0, 1108, 0, 92461, 0, 128764, 0,
-    64781, 0, 0, 0, 121126, 0, 1392, 0, 0, 917557, 0, 8065, 42994, 128739, 0,
-    0, 0, 121068, 92418, 0, 0, 0, 43280, 0, 70718, 1812, 0, 73046, 0, 0, 0,
-    0, 0, 6054, 10697, 3169, 0, 0, 70720, 11487, 70712, 0, 0, 0, 194716, 0,
-    0, 41863, 0, 0, 2304, 0, 92326, 0, 42951, 0, 0, 64760, 11766, 0, 0, 0, 0,
-    69236, 119171, 0, 8773, 10733, 36, 0, 0, 0, 0, 0, 11074, 0, 64910,
-    983131, 2009, 0, 0, 128036, 68114, 128906, 0, 0, 0, 983998, 12852, 3031,
-    0, 0, 129088, 0, 66414, 0, 0, 119950, 42613, 65933, 366, 0, 9892, 0,
-    11754, 101107, 83329, 65301, 44013, 83058, 67245, 10102, 0, 7739, 41026,
-    0, 0, 0, 0, 0, 0, 0, 0, 78386, 129475, 71868, 113811, 13081, 10923,
-    129330, 0, 68145, 0, 65861, 74083, 0, 0, 128392, 83063, 83065, 0, 70706,
-    0, 0, 0, 70168, 66586, 4183, 64967, 66250, 0, 92547, 0, 0, 113685, 0,
-    3792, 2011, 0, 0, 77748, 83332, 77749, 120595, 0, 68489, 41023, 77747, 0,
-    11659, 7922, 12614, 2005, 8523, 129880, 0, 7513, 1863, 129436, 83337,
-    128969, 0, 120274, 120033, 0, 8144, 0, 73031, 77767, 127524, 120270,
-    42241, 8783, 77764, 77765, 77766, 77760, 77761, 77762, 77763, 0, 10680,
-    0, 43293, 68771, 0, 119164, 83320, 72003, 10187, 77742, 77743, 0, 77737,
-    77738, 77739, 0, 10968, 43296, 119044, 0, 0, 101400, 0, 1005, 43826,
-    120030, 0, 2870, 0, 101399, 0, 0, 983798, 0, 235, 1384, 77758, 74887,
-    70494, 77754, 77755, 9796, 69895, 77750, 77751, 77752, 13186, 120407,
-    120250, 0, 0, 0, 42527, 12911, 43427, 1383, 983581, 0, 0, 0, 6156, 68117,
-    0, 7993, 4288, 0, 0, 13238, 13244, 0, 0, 120426, 13234, 120427, 0,
-    118904, 0, 11364, 0, 1380, 65617, 120253, 120261, 13196, 13197, 120311,
-    120419, 9495, 0, 0, 120418, 0, 73976, 128160, 0, 6941, 0, 13205, 13211,
-    5801, 0, 74271, 120319, 0, 120302, 7670, 0, 68075, 983583, 0, 19957,
-    72314, 2021, 93811, 43877, 0, 0, 0, 0, 3875, 120431, 64341, 0, 9814,
-    43457, 13066, 3314, 7787, 0, 0, 0, 0, 0, 0, 64531, 129860, 0, 0, 0, 0, 0,
-    127138, 0, 0, 9742, 0, 0, 10800, 77718, 8404, 0, 92592, 77714, 7089,
-    77716, 78545, 0, 77712, 77713, 0, 0, 4772, 5771, 101405, 0, 9841, 8843,
-    0, 0, 0, 129862, 120816, 0, 123137, 0, 77735, 0, 0, 0, 77731, 8849,
-    77733, 77734, 65112, 1796, 77729, 77730, 69665, 8164, 41301, 3502, 0,
-    122884, 128387, 0, 983835, 5825, 0, 0, 0, 0, 121322, 10983, 10354, 10418,
-    0, 2022, 0, 1409, 100789, 0, 0, 0, 0, 1390, 0, 0, 10471, 65904, 5846,
-    126472, 0, 0, 0, 0, 0, 0, 66035, 77725, 0, 77726, 77720, 77721, 67458,
-    3168, 67733, 0, 0, 2370, 0, 126243, 0, 195049, 0, 0, 1836, 0, 121207,
-    119137, 118959, 125232, 0, 0, 0, 2390, 3944, 0, 0, 0, 0, 69908, 125011,
-    0, 0, 123200, 0, 0, 8975, 64739, 0, 0, 0, 0, 64409, 0, 0, 0, 0, 128564,
-    0, 0, 0, 0, 6204, 0, 0, 0, 10911, 64954, 119003, 74809, 118903, 4267, 0,
-    0, 0, 0, 0, 0, 72023, 0, 0, 119504, 92887, 0, 0, 0, 0, 121125, 0, 128337,
-    5842, 0, 41439, 0, 0, 0, 9328, 0, 120980, 120917, 0, 0, 2285, 0, 0, 0, 0,
-    118634, 64555, 0, 0, 72162, 9541, 0, 0, 0, 41441, 0, 0, 0, 41040, 2459,
-    0, 0, 41041, 0, 0, 0, 0, 0, 10450, 0, 41043, 0, 0, 43125, 0, 0, 0, 0, 0,
-    121008, 68436, 128040, 0, 120649, 0, 0, 4312, 43927, 0, 0, 11923, 42227,
-    0, 5763, 0, 4827, 74559, 42228, 64406, 0, 0, 129703, 433, 119620, 0,
-    2499, 67167, 67166, 0, 11973, 0, 4293, 42271, 42224, 0, 0, 66322, 42226,
-    0, 0, 0, 74180, 0, 55277, 0, 0, 0, 119317, 0, 74632, 0, 0, 71103, 0, 0,
-    0, 585, 2383, 0, 43263, 0, 4290, 64842, 0, 68920, 0, 8511, 0, 0, 0,
-    119048, 2380, 126119, 0, 71704, 2376, 0, 0, 0, 5197, 127046, 127047,
-    127048, 2366, 127050, 127051, 73442, 0, 0, 0, 93835, 0, 93818, 0, 0,
-    74188, 113813, 0, 0, 0, 983838, 0, 0, 0, 0, 1847, 0, 72771, 0, 42384, 0,
-    4227, 74158, 0, 92501, 0, 0, 42365, 0, 128902, 0, 92821, 0, 0, 0, 0, 0,
-    0, 0, 0, 122934, 128563, 0, 983509, 127560, 2754, 0, 0, 128900, 0,
-    127867, 119638, 0, 1711, 12984, 92365, 77776, 6255, 77770, 77771, 77772,
-    77773, 0, 42063, 74184, 0, 0, 0, 0, 0, 77785, 77786, 41035, 43274, 77781,
-    11256, 77783, 77784, 520, 77778, 41037, 77780, 0, 0, 41034, 0, 983829,
-    64815, 0, 0, 321, 41028, 0, 0, 0, 0, 0, 0, 0, 74191, 0, 0, 72767, 1861,
-    118938, 129666, 0, 0, 100770, 0, 0, 128530, 3859, 0, 41660, 0, 70793, 0,
-    983756, 75014, 0, 127514, 41658, 0, 0, 0, 0, 0, 4414, 77769, 0, 42632, 0,
-    0, 0, 0, 0, 1405, 0, 43220, 43341, 0, 0, 0, 0, 0, 983733, 11199, 0, 3513,
-    0, 70341, 43342, 0, 65529, 0, 0, 0, 6485, 1397, 0, 0, 92678, 118566,
-    124137, 0, 82961, 0, 82962, 0, 74270, 43287, 983731, 0, 0, 983738, 0,
-    71914, 4317, 10490, 0, 0, 194867, 74463, 128952, 464, 41624, 0, 0, 0,
-    1346, 128240, 69271, 64724, 128566, 423, 0, 0, 113748, 0, 128161, 0, 0,
-    120563, 64960, 0, 0, 0, 0, 9584, 77795, 77796, 78927, 0, 9718, 77792,
-    42642, 77794, 64750, 77789, 77790, 0, 0, 128333, 0, 3204, 64666, 0,
-    43530, 2752, 0, 0, 119594, 0, 0, 0, 0, 92371, 0, 41983, 0, 7010, 0, 0,
-    41495, 92379, 5877, 42252, 93070, 8009, 3305, 0, 0, 0, 0, 92293, 0, 0, 0,
-    100836, 0, 65915, 1400, 75018, 10685, 75017, 2103, 122908, 0, 43276, 0,
-    11169, 0, 6481, 0, 0, 0, 100837, 72249, 100838, 74198, 0, 9116, 0, 0, 0,
-    0, 0, 0, 8129, 92994, 0, 124992, 0, 11658, 0, 0, 3452, 41031, 0, 1385, 0,
-    100754, 0, 43340, 11123, 41033, 6493, 12758, 0, 0, 11426, 0, 1681,
-    100755, 1204, 11960, 69902, 0, 69457, 0, 119322, 129483, 7415, 43338, 0,
-    0, 67717, 64915, 0, 100759, 72021, 41497, 65044, 0, 19960, 65358, 983601,
-    0, 0, 0, 73670, 0, 1789, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64728, 0, 0, 0,
-    6506, 64312, 0, 2368, 0, 0, 0, 0, 3439, 1825, 1192, 0, 73739, 10639, 0,
-    7790, 5430, 0, 0, 2848, 92981, 0, 0, 7607, 0, 0, 0, 120658, 0, 0, 8883,
-    0, 728, 0, 0, 0, 0, 92931, 0, 121372, 128348, 0, 68078, 8091, 11447, 0,
-    0, 126261, 983729, 0, 70003, 0, 0, 74419, 12335, 0, 0, 3443, 0, 0, 0,
-    127145, 0, 0, 0, 0, 11843, 0, 9205, 8624, 128543, 92930, 43295, 0, 65445,
-    0, 6277, 41672, 0, 10010, 70186, 983052, 0, 835, 71340, 0, 0, 0, 0, 0,
-    5426, 4258, 0, 64891, 5424, 0, 8283, 0, 5434, 0, 0, 0, 0, 0, 11947, 0,
-    1404, 0, 11432, 0, 3464, 6486, 4819, 0, 0, 570, 8095, 0, 0, 1498, 0, 0,
-    0, 431, 67820, 0, 120574, 128096, 0, 0, 13096, 0, 0, 43408, 0, 128538,
-    8835, 77875, 0, 0, 122973, 0, 0, 0, 0, 0, 3477, 227, 10488, 0, 382,
-    11418, 0, 5878, 0, 0, 0, 0, 6484, 92355, 66039, 0, 0, 0, 78717, 0, 92662,
-    119665, 0, 0, 43290, 0, 0, 0, 0, 8782, 0, 0, 4323, 128649, 0, 120903,
-    12094, 67499, 0, 0, 0, 92953, 3856, 120970, 124138, 5872, 6495, 72306, 0,
-    0, 0, 67173, 67172, 67171, 3953, 0, 0, 93063, 11994, 4339, 0, 92654, 0,
-    0, 0, 0, 128804, 0, 5228, 0, 9766, 0, 92741, 0, 0, 0, 0, 68860, 0, 1162,
-    0, 2671, 0, 73666, 92632, 92631, 72117, 0, 73811, 0, 194895, 0, 68085, 0,
-    74331, 11424, 0, 10466, 121239, 0, 194890, 0, 4820, 0, 0, 0, 194891, 0,
-    119212, 4896, 0, 4897, 42821, 64611, 0, 4438, 0, 0, 1753, 11331, 6147, 0,
-    43282, 8833, 0, 0, 6504, 0, 0, 0, 118670, 0, 1413, 0, 0, 64353, 12141,
-    121138, 0, 0, 43163, 0, 72880, 64789, 127094, 838, 127092, 120697,
-    127090, 5014, 0, 256, 0, 0, 42443, 42739, 0, 7542, 0, 70389, 0, 6489,
-    10048, 74326, 0, 66573, 0, 125271, 78712, 11761, 126078, 129603, 41094,
-    0, 0, 0, 0, 92689, 8453, 0, 0, 120942, 128184, 0, 11816, 0, 0, 2930,
-    93845, 0, 41098, 92771, 41093, 0, 0, 6498, 41096, 0, 0, 1238, 200, 0,
-    1660, 74476, 0, 0, 74362, 0, 0, 72301, 9224, 0, 0, 0, 0, 0, 0, 0, 0,
-    72729, 43284, 0, 72110, 67459, 13183, 0, 0, 0, 1669, 10776, 0, 0, 0, 0,
-    0, 1732, 4030, 0, 3963, 0, 0, 0, 6491, 0, 0, 914, 121394, 0, 0, 0, 78713,
-    0, 92441, 74367, 42960, 0, 0, 0, 0, 0, 0, 0, 65537, 0, 0, 43430, 5301, 0,
-    92618, 0, 43285, 0, 0, 125186, 0, 0, 5876, 0, 69555, 0, 0, 110713, 0, 0,
-    0, 0, 0, 0, 11114, 74536, 0, 0, 0, 0, 983130, 0, 0, 0, 0, 10915, 983069,
-    12007, 0, 0, 0, 0, 67655, 92604, 0, 8629, 0, 43168, 41872, 0, 0, 0,
-    42488, 0, 0, 0, 0, 0, 64730, 70041, 0, 122895, 0, 0, 0, 92306, 11416,
-    4280, 128516, 8765, 73451, 0, 1393, 0, 11157, 74386, 0, 0, 0, 0, 6683, 0,
-    93832, 12144, 0, 74513, 13019, 74994, 0, 0, 0, 983272, 0, 6488, 357, 0,
-    41100, 0, 41104, 0, 41099, 0, 71320, 0, 0, 0, 4434, 0, 0, 0, 74231,
-    83107, 0, 194914, 0, 0, 72286, 68305, 0, 41759, 12757, 0, 0, 72769, 9790,
-    7674, 0, 121095, 68209, 0, 41764, 0, 0, 72322, 2268, 0, 129845, 983608,
-    12743, 0, 6480, 0, 41779, 0, 66601, 0, 74490, 10986, 66602, 0, 64807, 0,
-    0, 41767, 119629, 0, 0, 0, 3955, 64571, 194918, 127089, 0, 70187, 69975,
-    9770, 12305, 12230, 0, 73551, 0, 0, 74752, 0, 0, 123168, 128263, 74449,
-    0, 65948, 69611, 0, 0, 71131, 129505, 78573, 0, 0, 11116, 0, 5747, 0,
-    110667, 9802, 41092, 120731, 0, 0, 0, 0, 0, 120733, 41090, 0, 0, 0,
-    11271, 57, 0, 0, 983244, 0, 71268, 121290, 43137, 0, 0, 110672, 126221,
-    0, 0, 0, 0, 0, 277, 74385, 0, 0, 0, 72155, 0, 13025, 8757, 0, 0, 1574, 0,
-    126124, 100800, 0, 5749, 129923, 0, 42824, 0, 1039, 9801, 0, 5745, 0,
-    41858, 0, 0, 120655, 0, 41862, 0, 0, 78822, 436, 4771, 118635, 42501, 0,
-    10573, 0, 77931, 118560, 917986, 9644, 0, 0, 0, 0, 69837, 0, 0, 0, 0,
-    67409, 0, 0, 0, 125204, 11939, 0, 0, 0, 0, 0, 0, 0, 3504, 0, 0, 92854,
-    126209, 0, 10226, 65558, 0, 3594, 0, 0, 40, 0, 0, 0, 0, 0, 74312, 72138,
-    74337, 0, 69577, 0, 0, 0, 70476, 0, 121143, 72317, 0, 0, 4304, 0, 0,
-    78707, 0, 0, 0, 78597, 1348, 78596, 0, 0, 0, 70406, 92392, 0, 7599, 0, 0,
-    13269, 0, 129729, 0, 100804, 0, 74494, 6097, 7568, 43980, 4982, 78592, 0,
-    0, 0, 0, 13270, 0, 128090, 13138, 0, 9484, 0, 0, 71364, 0, 0, 0, 9487, 0,
-    92913, 0, 71911, 78668, 73963, 6193, 0, 0, 0, 194848, 7228, 10011,
-    194849, 194852, 194851, 11654, 194853, 126218, 194855, 0, 194857, 3604,
-    0, 0, 0, 0, 0, 94110, 43740, 94109, 194860, 194863, 66750, 121021, 0,
-    94111, 6995, 74173, 5437, 74174, 0, 8702, 7339, 129981, 0, 199, 194843,
-    194846, 194845, 0, 126069, 0, 67818, 0, 7560, 0, 0, 0, 0, 6472, 65814, 0,
-    128983, 70845, 0, 0, 9191, 0, 0, 0, 0, 124904, 10196, 0, 72452, 6585, 0,
-    120750, 0, 0, 71872, 129129, 0, 0, 78590, 72308, 11382, 129499, 0,
-    983670, 0, 194833, 194832, 2165, 129540, 94020, 194836, 42727, 194838,
-    128252, 78585, 43874, 119610, 0, 0, 43248, 0, 194816, 0, 194818, 128845,
-    194820, 127879, 5297, 194821, 13284, 6112, 93964, 93010, 73927, 42947, 0,
-    65746, 0, 0, 194827, 194826, 4342, 42839, 194831, 1677, 0, 72135, 0, 0,
-    0, 11011, 66399, 0, 0, 0, 10160, 0, 0, 0, 0, 2052, 4308, 92174, 43000,
-    118659, 543, 64916, 122964, 0, 0, 119170, 0, 118922, 2064, 0, 43158, 0,
-    0, 69984, 0, 0, 129187, 0, 0, 0, 0, 41631, 92728, 0, 0, 6228, 0, 0, 0, 0,
-    0, 0, 506, 0, 0, 65735, 2055, 43255, 121407, 0, 0, 0, 0, 0, 0, 194666,
-    2063, 0, 0, 0, 0, 72136, 0, 74333, 194912, 11827, 74308, 194913, 194916,
-    194915, 64564, 194917, 67986, 194919, 0, 11037, 0, 121102, 0, 0, 10560,
-    0, 120756, 194922, 113737, 194924, 194927, 120495, 1931, 0, 0, 0, 128228,
-    0, 12643, 8751, 123629, 0, 12294, 0, 78834, 9138, 78831, 78833, 12631,
-    78829, 11080, 78821, 0, 0, 1239, 0, 121067, 0, 12636, 0, 0, 0, 0, 0, 0,
-    8998, 0, 0, 9152, 0, 0, 0, 67589, 0, 64290, 0, 92393, 12615, 0, 129141,
-    6914, 93013, 0, 119569, 0, 65188, 0, 67611, 4337, 0, 194897, 194896,
-    78516, 194898, 7681, 194900, 194903, 67596, 194905, 194904, 2477, 93974,
-    0, 0, 0, 67604, 70705, 0, 194882, 194881, 194884, 194883, 194886, 128914,
-    194888, 67599, 0, 194889, 0, 0, 0, 0, 3357, 0, 78852, 4207, 1288, 78842,
-    78839, 78840, 78837, 78838, 66354, 194872, 0, 128432, 0, 67618, 92664, 0,
-    42788, 0, 64612, 129897, 10774, 194877, 0, 194879, 129125, 0, 0, 997,
-    194901, 0, 92577, 0, 11440, 11379, 42000, 13139, 0, 0, 74030, 72293,
-    73796, 0, 0, 0, 0, 2818, 0, 0, 73793, 0, 4172, 93028, 126523, 124981, 0,
-    129896, 0, 0, 129522, 69706, 0, 6834, 0, 0, 194865, 126982, 121211,
-    194866, 194869, 194868, 766, 1257, 0, 0, 0, 3265, 66617, 3274, 0, 0,
-    94042, 0, 8373, 41989, 69507, 73460, 3418, 3263, 0, 0, 0, 3270, 64539,
-    11489, 0, 118945, 126220, 0, 127795, 0, 94031, 0, 0, 0, 0, 0, 70512,
-    983983, 186, 0, 119156, 5770, 13179, 0, 12612, 12949, 64856, 12800, 0, 0,
-    983152, 11507, 0, 0, 118929, 0, 0, 72141, 0, 73459, 0, 0, 0, 73461, 9254,
-    66877, 194907, 0, 92338, 5624, 126253, 0, 0, 0, 120472, 120464, 0, 0,
-    122915, 120462, 0, 1872, 66508, 120467, 41079, 0, 5502, 119330, 41078,
-    194906, 0, 0, 4511, 68449, 0, 0, 0, 0, 43245, 41083, 68861, 0, 0, 9003,
-    119959, 0, 5305, 9653, 41081, 43146, 9546, 0, 0, 120478, 0, 65205, 71713,
-    64063, 120459, 0, 0, 0, 64058, 43101, 43102, 0, 64062, 1028, 64060,
-    64059, 0, 10567, 110816, 110817, 92857, 110815, 0, 2902, 64043, 64042,
-    43749, 10756, 64047, 64046, 64045, 64044, 0, 10076, 64040, 64039, 0,
-    1034, 0, 0, 64034, 64033, 64032, 42735, 64038, 64037, 64036, 64035, 4291,
-    67497, 64015, 64014, 83393, 83394, 83395, 983784, 0, 43090, 83391, 3476,
-    64013, 64012, 64011, 64010, 64008, 64007, 2003, 7706, 0, 0, 119050,
-    64009, 204, 0, 0, 4430, 8239, 64003, 10626, 64001, 64057, 13079, 64055,
-    64054, 0, 0, 43246, 9343, 64049, 64048, 0, 1133, 64053, 64052, 64051,
-    64050, 0, 0, 0, 66415, 12329, 0, 0, 129698, 1942, 0, 0, 0, 128249, 0,
-    68291, 10760, 64023, 64022, 64021, 64020, 43670, 77924, 64025, 41412,
-    78243, 78244, 0, 0, 64019, 64018, 64017, 64016, 0, 0, 78251, 78252,
-    78248, 78249, 77914, 78247, 0, 917560, 77919, 6788, 13094, 0, 7532,
-    41414, 0, 3179, 70745, 64769, 0, 0, 71967, 0, 10751, 0, 0, 0, 0, 0, 0, 0,
-    2008, 64031, 64030, 294, 41874, 83383, 83384, 64844, 83376, 129063,
-    83379, 83380, 64028, 11396, 64026, 83374, 0, 0, 118795, 71739, 43247, 0,
-    70153, 70846, 0, 0, 0, 0, 0, 0, 0, 7801, 83359, 83361, 128931, 0, 3297,
-    83356, 83357, 1135, 83350, 83351, 73696, 1995, 7927, 71738, 110742, 2552,
-    83372, 60, 0, 8649, 83368, 83369, 83370, 83371, 10541, 83365, 78679,
-    43833, 0, 0, 2013, 83362, 0, 110636, 0, 0, 12832, 110638, 8081, 8362,
-    120188, 0, 9137, 0, 0, 0, 0, 3466, 0, 0, 1996, 0, 3453, 3412, 0, 2002,
-    2000, 120176, 0, 0, 0, 0, 1998, 0, 1842, 7037, 0, 9628, 68446, 0, 9826,
-    64502, 1767, 3413, 0, 0, 0, 0, 0, 0, 13108, 44024, 120204, 0, 92693, 0,
-    0, 0, 70291, 12650, 983210, 0, 68061, 0, 3592, 0, 0, 0, 0, 983975, 0,
-    66417, 128792, 10742, 0, 0, 1994, 9281, 3296, 64475, 1997, 1895, 128936,
-    43024, 0, 0, 123184, 72391, 0, 8999, 0, 983633, 0, 66480, 0, 0, 0,
-    983083, 0, 596, 0, 0, 120216, 8651, 120217, 0, 0, 12995, 0, 0, 70740, 0,
-    42930, 119955, 64810, 917834, 6825, 0, 917839, 120208, 64275, 120889,
-    128069, 120210, 6384, 917840, 126477, 0, 67698, 0, 0, 0, 120496, 0,
-    43412, 0, 0, 0, 0, 0, 120172, 0, 120763, 0, 0, 0, 128343, 1457, 0, 0,
-    6381, 2815, 0, 65240, 129664, 0, 0, 119522, 70487, 0, 0, 0, 0, 0, 120572,
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-    0, 0, 537, 0, 4179, 0, 0, 0, 0, 0, 0, 0, 0, 12081, 0, 0, 4048, 7053, 0,
-    0, 70459, 0, 124975, 0, 3059, 0, 0, 43491, 983833, 0, 0, 127993, 4100,
-    920, 1811, 1355, 0, 0, 64383, 10078, 69398, 0, 118651, 0, 65870, 0,
-    129565, 0, 72400, 42918, 0, 66789, 0, 12865, 0, 73938,
+static const unsigned short dawg_codepoint_to_pos_index2[] = {
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 29174, 13037, 26950, 24736, 10779, 26523, 358, 1041, 19550,
+    27163, 2511, 26774, 8150, 15996, 13206, 29017, 10563, 10548, 10560,
+    10557, 10542, 10539, 10554, 10551, 10566, 10545, 7753, 27749, 19776,
+    12475, 13751, 26948, 8149, 18159, 18205, 18215, 18231, 18246, 18291,
+    18295, 18312, 18326, 18355, 18360, 18372, 18390, 18399, 18415, 18465,
+    18473, 18476, 18496, 18519, 18548, 18587, 18598, 18607, 18610, 18624,
+    19518, 27073, 27177, 6518, 20535, 13722, 18716, 18766, 18786, 18809,
+    18845, 18904, 18912, 18930, 18949, 18986, 18992, 19006, 19044, 19057,
+    19081, 19138, 19149, 19155, 19193, 19234, 19307, 19355, 19369, 19378,
+    19386, 19402, 19466, 33652, 27135, 32321, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 24729,
+    16349, 5830, 26815, 9647, 34209, 4636, 27731, 10531, 8344, 13111, 19565,
+    24711, 28968, 26996, 22169, 10248, 26786, 29740, 29739, 4, 22895, 26671,
+    22898, 5826, 29743, 21136, 27214, 33780, 33778, 33786, 16352, 18188,
+    18189, 18177, 18191, 18170, 18172, 18193, 18216, 18277, 18278, 18249,
+    18264, 18342, 18343, 18332, 18330, 18288, 18413, 18454, 18455, 18422,
+    18440, 18429, 23603, 18438, 18579, 18580, 18549, 18552, 18619, 18540,
+    19224, 18747, 18748, 18736, 18750, 18727, 18729, 18753, 18787, 18878,
+    18879, 18848, 18863, 18967, 18968, 18950, 18952, 18903, 19076, 19120,
+    19121, 19082, 19106, 19089, 10690, 19104, 19342, 19345, 19310, 19313,
+    19397, 19256, 19388, 18175, 18734, 18160, 18717, 18185, 18744, 18220,
+    18792, 18218, 18789, 18224, 18797, 18219, 18791, 18238, 18817, 18235,
+    18811, 18267, 18867, 18280, 18881, 18259, 18858, 18274, 18875, 18258,
+    18857, 18297, 18914, 18300, 18917, 18304, 18922, 18296, 18913, 18315,
+    18933, 18322, 18942, 18336, 18964, 18334, 18959, 18345, 18970, 18339,
+    18961, 18329, 18833, 18636, 19422, 18356, 18987, 18361, 18993, 19005,
+    18386, 19023, 18382, 19010, 18384, 19013, 18379, 19020, 18381, 19031,
+    18408, 19069, 18400, 19058, 18402, 19062, 19077, 18290, 18886, 18418,
+    19099, 18457, 19123, 18435, 19095, 18637, 19425, 18485, 19172, 18477,
+    19156, 18478, 19158, 18502, 19194, 18501, 19200, 18499, 19198, 18497,
+    19196, 18520, 19235, 18523, 19239, 18530, 19251, 18576, 19339, 18568,
+    19329, 18582, 19347, 18583, 19338, 18559, 19320, 18573, 19334, 18599,
+    19370, 18611, 19387, 18612, 18627, 19403, 18630, 19409, 18626, 19406,
+    19036, 18775, 18211, 18206, 18767, 18543, 19259, 18460, 18222, 18795,
+    18198, 18243, 18239, 18812, 19264, 18494, 18518, 18459, 18292, 18907,
+    18303, 18310, 18948, 18353, 18346, 18371, 19004, 19009, 19032, 18537,
+    18406, 19063, 18421, 18447, 19113, 18462, 19135, 18471, 19146, 18713,
+    18544, 19260, 18289, 18653, 19247, 18529, 19248, 18528, 18561, 19322,
+    18586, 18591, 18616, 19392, 18633, 19412, 18282, 18284, 18896, 18901,
+    18706, 18545, 19261, 18652, 18705, 18707, 18708, 18645, 18655, 18245,
+    18233, 18839, 18389, 18380, 19043, 18414, 18403, 19080, 18183, 18742,
+    18333, 18951, 18428, 19088, 18551, 19312, 18556, 19317, 18555, 19316,
+    18553, 19314, 18554, 19315, 19296, 18171, 18728, 18167, 18724, 18195,
+    18756, 18305, 18923, 18298, 18915, 18362, 18994, 18436, 19102, 18437,
+    19103, 18283, 18898, 18989, 18244, 18232, 18838, 18299, 18916, 18324,
+    18606, 18407, 19068, 18173, 18730, 18194, 18755, 18439, 19105, 18169,
+    18726, 18190, 18749, 18263, 18862, 18279, 18880, 18327, 18958, 18344,
+    18969, 18434, 19094, 18456, 19122, 18482, 19162, 18487, 19173, 18558,
+    19319, 18581, 19346, 18500, 19199, 18522, 19237, 18623, 19401, 18316,
+    18934, 18404, 18816, 18464, 19137, 18635, 19416, 18166, 18723, 18247,
+    18846, 18430, 19090, 18443, 19109, 18431, 19091, 18432, 19092, 18620,
+    19398, 19012, 19061, 19238, 18830, 18843, 19154, 18192, 18225, 18798,
+    18374, 18524, 19206, 19411, 18306, 18924, 18212, 18585, 18539, 18281,
+    18883, 18359, 18991, 18512, 19152, 18489, 19176, 18622, 19396, 19288,
+    18758, 19289, 18774, 19126, 18790, 18813, 18821, 19185, 19215, 19219,
+    19132, 19180, 19182, 18805, 18831, 18921, 19222, 18682, 18928, 19192,
+    19265, 18941, 18947, 18971, 18982, 18660, 19018, 19007, 19026, 19033,
+    19291, 19292, 19052, 19065, 19074, 18693, 18778, 18667, 18804, 19148,
+    19276, 19279, 19282, 19167, 19168, 19163, 19183, 18669, 18661, 19212,
+    18889, 18832, 19232, 18893, 19283, 19250, 19308, 19349, 19362, 19285,
+    19300, 19293, 18700, 19415, 19405, 18895, 18897, 18709, 18711, 18650,
+    18702, 18648, 18680, 18803, 18683, 18689, 18988, 19298, 18662, 19151,
+    18710, 18654, 18840, 18826, 18841, 19303, 19252, 19302, 18910, 19040,
+    19041, 18647, 18649, 19266, 19267, 23222, 23223, 23231, 23253, 23280,
+    23283, 23178, 23300, 23302, 23151, 23094, 23308, 23005, 23159, 23161,
+    23137, 23110, 23157, 23139, 23163, 23310, 23096, 23086, 5759, 23314,
+    23140, 23004, 23109, 23135, 23126, 23132, 23131, 23307, 23117, 23038,
+    23037, 23309, 23095, 23150, 23148, 4629, 10885, 27334, 25266, 28928,
+    10944, 23164, 23087, 23221, 23233, 23260, 23301, 23257, 23101, 23116,
+    23144, 23129, 23106, 23316, 23315, 23313, 23311, 23093, 23122, 23134,
+    23124, 23127, 23128, 23147, 23146, 23145, 23130, 23156, 23007, 23107,
+    23008, 23108, 23166, 23149, 23123, 7961, 7759, 7843, 8125, 8067, 8087,
+    7769, 7868, 7865, 7974, 8112, 7894, 7775, 8140, 7893, 7895, 7777, 7977,
+    8133, 7780, 8095, 7781, 7962, 7760, 8052, 8108, 8046, 7976, 8049, 8135,
+    7899, 8092, 8076, 8091, 8096, 7871, 7867, 8111, 7782, 7845, 8085, 8139,
+    7772, 7980, 7776, 7844, 7771, 7978, 8129, 8072, 8066, 7896, 8128, 8116,
+    8064, 8115, 8063, 8103, 7979, 8119, 8123, 8147, 8141, 7882, 7963, 7761,
+    7971, 7970, 7973, 7972, 7773, 7908, 7892, 8045, 8078, 7975, 7768, 8053,
+    8134, 7966, 8099, 8050, 7909, 8146, 8041, 8100, 8098, 8104, 7870, 7765,
+    7887, 8114, 7876, 7875, 7879, 7880, 7888, 7877, 7886, 7993, 8001, 8006,
+    8014, 8017, 7999, 8031, 8033, 8035, 8020, 8023, 8038, 8039, 13936, 14200,
+    13831, 14067, 14018, 14014, 13925, 14182, 35762, 35762, 14257, 14207,
+    14208, 14206, 14262, 13939, 35762, 35762, 35762, 35762, 14222, 13952,
+    13829, 13805, 13862, 13852, 13876, 35762, 13908, 35762, 13923, 13898,
+    14114, 13808, 13935, 13933, 13931, 13853, 13937, 13832, 13929, 13863,
+    13932, 13938, 13940, 13941, 13942, 13899, 13928, 13909, 35762, 13911,
+    13930, 13914, 13926, 13934, 13927, 13878, 13868, 13919, 14064, 14079,
+    14104, 14123, 14134, 14039, 14199, 14197, 14069, 14070, 14201, 14080,
+    14194, 14105, 14145, 14202, 14203, 14204, 14205, 14172, 14185, 14186,
+    14196, 14192, 14195, 14125, 14183, 14198, 14184, 14147, 14110, 14130,
+    14181, 14143, 14171, 13947, 14259, 14218, 14226, 14224, 14225, 14034,
+    14035, 13999, 14010, 14066, 14009, 14191, 14012, 14068, 14011, 14146,
+    14008, 14189, 8225, 8319, 8203, 8297, 8199, 8293, 8197, 8291, 8195, 8289,
+    8224, 8318, 8194, 8288, 13998, 14037, 14015, 14013, 13948, 14016, 14038,
+    13913, 14193, 13943, 13912, 14190, 14036, 13945, 13946, 13944, 9913,
+    9915, 9862, 9901, 9837, 9866, 9853, 9972, 9985, 9809, 9812, 9826, 9940,
+    9910, 9953, 9870, 9838, 9854, 9986, 9895, 9874, 9912, 9979, 9975, 9908,
+    9951, 9925, 9876, 9892, 9881, 9944, 9813, 9887, 9890, 9823, 9832, 9894,
+    9902, 9829, 9855, 9958, 9956, 9906, 9969, 9961, 9875, 9974, 9966, 9997,
+    10013, 10186, 10054, 10033, 10071, 10179, 10175, 10067, 10129, 10084,
+    10035, 10051, 10040, 10110, 10115, 10046, 10049, 10147, 10157, 10053,
+    10061, 10153, 10014, 10136, 10134, 10065, 10169, 10139, 10034, 10174,
+    10166, 10072, 10074, 10021, 10060, 10162, 10025, 10012, 10172, 10185,
+    10103, 10109, 10150, 10099, 10069, 10131, 10029, 9945, 10111, 9968,
+    10168, 9921, 10080, 9808, 10101, 9917, 10076, 9850, 10009, 9918, 10077,
+    9941, 10100, 9816, 10119, 9984, 10184, 9923, 10082, 9924, 10083, 9836,
+    10161, 9817, 10124, 9946, 10112, 9948, 10114, 9938, 10097, 10217, 7836,
+    7830, 7833, 7831, 7832, 7786, 7839, 9952, 10130, 9965, 10143, 9888,
+    10047, 9897, 10056, 9899, 10058, 9896, 10055, 9981, 10181, 9977, 10177,
+    9926, 10085, 9928, 10087, 9929, 10088, 9848, 10007, 9883, 10042, 9991,
+    10190, 9814, 10116, 9844, 10003, 9891, 10050, 9825, 10149, 9963, 10141,
+    9964, 10142, 9903, 10062, 9990, 10189, 9857, 10016, 9858, 10017, 9954,
+    10132, 9841, 10000, 9842, 10001, 9994, 9982, 10182, 9927, 10086, 9879,
+    10038, 9886, 10045, 9885, 10044, 9939, 10098, 9893, 10052, 10118, 9840,
+    9999, 9839, 9998, 9989, 10188, 9914, 10073, 9949, 10127, 9950, 10128,
+    9980, 10180, 9976, 10176, 9843, 10002, 9911, 10070, 9909, 10068, 9947,
+    10113, 9846, 10005, 9847, 10006, 9889, 10048, 9835, 10160, 9834, 10159,
+    9833, 10158, 9856, 10015, 9898, 10057, 9970, 10170, 9900, 10059, 9904,
+    10063, 9905, 10064, 9932, 10091, 9931, 10090, 9937, 10096, 9930, 10089,
+    9933, 10092, 9934, 10093, 9935, 10094, 9936, 10095, 9821, 10123, 9880,
+    10039, 9810, 10104, 9822, 10126, 9967, 10167, 9988, 10187, 9987, 10165,
+    9845, 10004, 9877, 10036, 9882, 10041, 9815, 10117, 9955, 10133, 9884,
+    10043, 9868, 10027, 9872, 10031, 9878, 10037, 35762, 2429, 2436, 2420,
+    2442, 2416, 2440, 2417, 2418, 2407, 2439, 2435, 2432, 2434, 2412, 2424,
+    2441, 2422, 2419, 2410, 2437, 2408, 2438, 2427, 2431, 2411, 2426, 2421,
+    2415, 2428, 2430, 2406, 2414, 2413, 2409, 2425, 2423, 2443, 2433, 35762,
+    35762, 2493, 2405, 2445, 2446, 2444, 2497, 2404, 2466, 2469, 2479, 2457,
+    2485, 2453, 2483, 2454, 2455, 2468, 2482, 2478, 2475, 2477, 2449, 2461,
+    2484, 2459, 2456, 2447, 2480, 2472, 2481, 2464, 2471, 2448, 2463, 2458,
+    2452, 2465, 2470, 2467, 2451, 2450, 2474, 2462, 2460, 2486, 2476, 2487,
+    2473, 2496, 2494, 35762, 35762, 27207, 19558, 2495, 35762, 15349, 15352,
+    15353, 15360, 15361, 15357, 15364, 15362, 15347, 15359, 15356, 15340,
+    15341, 15342, 15350, 15355, 15348, 15337, 15345, 15346, 15343, 15344,
+    15339, 15351, 15354, 15358, 15365, 15366, 15338, 15363, 15444, 15460,
+    15448, 15446, 15447, 15449, 15462, 15458, 15452, 15454, 15450, 15451,
+    15456, 15445, 15463, 15469, 15457, 15466, 15459, 15461, 15467, 15443,
+    15442, 15468, 15455, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 15367, 15374, 15417, 15415, 15392, 15423, 15397, 15394, 15409,
+    15434, 15383, 15377, 15419, 15389, 15421, 15388, 15395, 15399, 15373,
+    15385, 15380, 15387, 15413, 15390, 15407, 15401, 15411, 35762, 35762,
+    35762, 35762, 15470, 15438, 15441, 15439, 15465, 15464, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 2249,
+    2283, 1081, 2284, 2285, 2248, 2392, 2393, 2259, 2390, 2391, 2582, 1056,
+    1063, 2253, 2289, 2282, 2288, 2280, 2281, 2290, 2310, 2296, 2325, 2292,
+    2341, 2340, 2276, 1367, 1072, 2380, 2388, 1322, 1275, 1139, 1129, 1554,
+    1132, 1570, 1111, 1153, 1497, 1496, 1517, 1301, 1260, 1341, 1178, 1514,
+    1419, 1596, 1453, 1466, 1445, 1193, 1475, 1591, 1101, 1247, 1328, 1325,
+    1222, 1221, 1220, 2368, 1227, 1410, 1312, 1346, 1359, 1383, 1277, 1549,
+    1147, 1561, 1079, 1061, 1091, 1073, 1057, 1087, 2277, 2345, 2102, 1086,
+    1085, 2344, 2266, 2103, 2389, 2384, 2383, 2385, 2260, 1074, 2387, 2400,
+    2402, 2399, 2398, 2395, 2394, 2397, 2396, 2403, 2401, 2257, 1068, 2382,
+    1082, 1205, 1207, 1472, 1144, 1136, 1135, 1297, 1298, 1300, 1535, 1299,
+    1523, 1529, 1173, 1505, 1504, 1398, 1509, 1168, 1270, 1268, 1378, 1208,
+    1267, 1484, 1491, 1202, 1187, 1179, 1180, 1190, 1199, 1213, 1183, 1186,
+    1436, 1422, 1433, 1430, 1423, 1431, 1426, 1309, 1429, 1454, 1457, 1458,
+    1448, 1447, 1478, 1104, 1206, 1230, 1228, 1542, 1232, 1405, 1413, 1414,
+    1323, 1474, 1317, 1316, 1368, 1314, 1238, 1241, 1369, 1240, 1254, 1239,
+    1350, 1348, 1352, 1351, 1392, 1384, 1439, 1393, 1389, 1288, 1486, 1285,
+    1278, 1279, 1500, 1558, 1335, 1588, 1534, 1585, 1338, 1557, 1541, 1216,
+    1579, 1575, 1551, 1600, 1580, 1562, 1565, 1083, 1152, 2299, 2298, 2301,
+    2300, 2327, 2309, 2307, 1071, 2367, 2324, 2323, 2293, 2302, 2339, 2303,
+    2343, 2342, 2321, 2304, 2255, 1070, 1069, 2264, 2338, 1182, 1427, 13052,
+    13054, 13051, 13050, 13047, 13046, 13049, 13048, 13055, 13053, 1467,
+    1194, 1249, 2287, 2286, 1284, 29867, 29941, 29938, 29939, 29935, 29876,
+    29863, 29864, 29940, 29937, 29862, 29872, 29871, 29870, 35762, 29860,
+    29908, 29904, 29918, 29914, 29915, 29878, 29877, 29879, 29921, 29919,
+    29880, 29911, 29912, 29916, 29917, 29909, 29881, 29893, 29920, 29900,
+    29907, 29922, 29894, 29898, 29906, 29910, 29899, 29905, 29913, 29895,
+    29897, 29896, 29927, 29926, 29925, 29930, 29929, 29928, 29932, 29931,
+    29866, 29865, 29875, 29874, 29873, 29869, 29868, 29933, 29947, 29948,
+    29934, 29945, 29944, 29943, 29942, 29924, 29923, 29946, 29861, 35762,
+    35762, 29901, 29902, 29903, 1159, 1162, 1157, 1158, 1160, 1161, 1155,
+    1269, 1266, 1185, 1181, 1424, 1460, 1106, 1102, 1105, 1233, 1231, 1330,
+    1326, 1324, 1362, 1361, 1390, 1387, 1388, 1353, 1425, 1428, 1459, 1265,
+    1263, 1456, 1420, 1264, 1138, 1137, 1219, 1218, 1217, 1553, 1552, 1564,
+    1563, 1261, 1461, 1455, 1313, 31890, 31903, 31899, 31916, 31915, 31894,
+    31891, 31879, 31910, 31895, 31884, 31883, 31906, 31893, 31886, 31887,
+    31904, 31882, 31912, 31905, 31917, 31898, 31897, 31896, 31908, 31889,
+    31892, 31907, 31913, 31902, 31901, 31881, 31909, 31914, 31880, 31888,
+    31885, 31911, 31875, 31874, 31921, 31877, 31922, 31920, 31876, 31878,
+    31919, 31918, 31923, 31900, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 24597, 24599,
+    24596, 24595, 24592, 24591, 24594, 24593, 24600, 24598, 24632, 24619,
+    24633, 24618, 24634, 24616, 24615, 24603, 24608, 24621, 24627, 24629,
+    24607, 24617, 24602, 24614, 24613, 24628, 24620, 24622, 24624, 24625,
+    24610, 24626, 24611, 24609, 24623, 24630, 24631, 24612, 24605, 24604,
+    24606, 24584, 24585, 24586, 24582, 24579, 24580, 24581, 24583, 24587,
+    24636, 24635, 24638, 24637, 24588, 24639, 24601, 35762, 35762, 24589,
+    24590, 24640, 27560, 27547, 27561, 27549, 27552, 27548, 27563, 27551,
+    27558, 27567, 27553, 27554, 27564, 27566, 27555, 27550, 27568, 27559,
+    27565, 27562, 27556, 27557, 27570, 27571, 27574, 27569, 27575, 27572,
+    27594, 27604, 27599, 27593, 27603, 27598, 27592, 27602, 27576, 27600,
+    27596, 27606, 27577, 27595, 27605, 27597, 27601, 27573, 35762, 35762,
+    27584, 27578, 27580, 27583, 27581, 27585, 27607, 27590, 27588, 27591,
+    27587, 27589, 27582, 27586, 27579, 35762, 20924, 20911, 20913, 20912,
+    20914, 20923, 20921, 20926, 20906, 20904, 20903, 20915, 20916, 20917,
+    20907, 20925, 20918, 20909, 20919, 20920, 20908, 20905, 20922, 20927,
+    20910, 20931, 20929, 20928, 35762, 35762, 20930, 35762, 29886, 29891,
+    29887, 29889, 29885, 29884, 29888, 29892, 29883, 29882, 29890, 35762,
+    35762, 35762, 35762, 35762, 1125, 1115, 1126, 1142, 1124, 1112, 1121,
+    1118, 1122, 1120, 1143, 1117, 1128, 1114, 1116, 1127, 1113, 1119, 1123,
+    2369, 2370, 2372, 1522, 2265, 2258, 1391, 1262, 1479, 1477, 1327, 2386,
+    35762, 2254, 2256, 35762, 35762, 35762, 35762, 35762, 35762, 2311, 2332,
+    2331, 2334, 2101, 2349, 1064, 1084, 1156, 1163, 1302, 1476, 1229, 1411,
+    1347, 1360, 1576, 1578, 1432, 1550, 1444, 1358, 1184, 1446, 1242, 1473,
+    1599, 1103, 1315, 1412, 1154, 1399, 1502, 1421, 1577, 1099, 1097, 1100,
+    1400, 1503, 1524, 1485, 1329, 1248, 1098, 1304, 1303, 1349, 1259, 2291,
+    2294, 2322, 2317, 2326, 1095, 1094, 2348, 1096, 1093, 2337, 2312, 2308,
+    2329, 2328, 2305, 2330, 2313, 2315, 2314, 2316, 2319, 2318, 2295, 2306,
+    1067, 2381, 1052, 1050, 1054, 1053, 1051, 1055, 2375, 2377, 2379, 2374,
+    2376, 2378, 2252, 2251, 2250, 2320, 1076, 1075, 1088, 1606, 2261, 1605,
+    2263, 1065, 1066, 2262, 1060, 2104, 10466, 10454, 10468, 10473, 10389,
+    10363, 10364, 10433, 10434, 10412, 10413, 10428, 10430, 10371, 10390,
+    10441, 10365, 10372, 10391, 10395, 10366, 10406, 10405, 10384, 10382,
+    10418, 10369, 10373, 10403, 10401, 10419, 10425, 10424, 10377, 10376,
+    10417, 10427, 10426, 10379, 10378, 10420, 10416, 10436, 10435, 10400,
+    10399, 10387, 10411, 10409, 10408, 10423, 10422, 10421, 10432, 10392,
+    10393, 10394, 10386, 10486, 10485, 10470, 10467, 10476, 10498, 10499,
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+    33423, 33424, 33425, 33426, 33427, 33428, 33430, 33431, 33432, 33433,
+    33434, 33435, 33436, 33437, 33438, 33439, 33441, 33442, 33443, 33444,
+    33445, 33446, 33447, 33448, 33449, 33450, 33453, 33454, 33455, 33456,
+    33457, 33458, 33459, 33460, 33461, 33462, 33464, 33465, 33466, 33467,
+    33468, 33469, 33470, 33471, 33472, 33473, 33475, 33476, 33477, 33478,
+    33479, 33480, 33481, 33482, 33483, 33484, 33486, 33487, 33488, 33489,
+    33490, 33491, 33492, 33493, 33494, 33495, 33497, 33498, 33499, 33500,
+    33501, 33502, 33503, 33504, 33505, 33506, 33508, 33509, 33510, 33511,
+    33512, 33513, 33514, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 17147, 17148, 17155, 17157, 17154, 17153, 17150, 17149,
+    17152, 17151, 17158, 17156, 18176, 18735, 18335, 18960, 18570, 19331,
+    18270, 18870, 18271, 18871, 18272, 18872, 18444, 19110, 18445, 19111,
+    18446, 19112, 18509, 19207, 18254, 18853, 18250, 18849, 18955, 19078,
+    18186, 18745, 18187, 18746, 18275, 18876, 18276, 18877, 18260, 18859,
+    18261, 18860, 18954, 18956, 18340, 18962, 18341, 18963, 18358, 18990,
+    18388, 19030, 18394, 19051, 18484, 19169, 18574, 19335, 18575, 19336,
+    18571, 19332, 18572, 19333, 18754, 19127, 19128, 19286, 19287, 19216,
+    19217, 18944, 18945, 2267, 2270, 2268, 2272, 2274, 2271, 2273, 2269,
+    2275, 10448, 10443, 10442, 10449, 10444, 10445, 10447, 10446, 3594, 3593,
+    3595, 14488, 14487, 14486, 14485, 14490, 14489, 25862, 25861, 3539,
+    30399, 30407, 30416, 30408, 30410, 30405, 30409, 30404, 30420, 30419,
+    30422, 30414, 30401, 30421, 30403, 30402, 30415, 30406, 30418, 30412,
+    30413, 30411, 30417, 30400, 30538, 30545, 30546, 30541, 30542, 30547,
+    30548, 30539, 30543, 30544, 30540, 30604, 30611, 30612, 30607, 30608,
+    30613, 30614, 30605, 30609, 30610, 30606, 30715, 30722, 30723, 30718,
+    30719, 30724, 30725, 30716, 30720, 30721, 30717, 30615, 30622, 30623,
+    30618, 30619, 30624, 30625, 30616, 30620, 30621, 30617, 30693, 30700,
+    30701, 30696, 30697, 30702, 30703, 30694, 30698, 30699, 30695, 30593,
+    30600, 30601, 30596, 30597, 30602, 30603, 30594, 30598, 30599, 30595,
+    30704, 30711, 30712, 30707, 30708, 30713, 30714, 30705, 30709, 30710,
+    30706, 30626, 30633, 30634, 30629, 30630, 30635, 30636, 30627, 30631,
+    30632, 30628, 30759, 30766, 30767, 30762, 30763, 30768, 30769, 30760,
+    30764, 30765, 30761, 30748, 30755, 30756, 30751, 30752, 30757, 30758,
+    30749, 30753, 30754, 30750, 30781, 30788, 30789, 30784, 30785, 30790,
+    30791, 30782, 30786, 30787, 30783, 30648, 30655, 30656, 30651, 30652,
+    30657, 30658, 30649, 30653, 30654, 30650, 30571, 30578, 30579, 30574,
+    30575, 30580, 30581, 30572, 30576, 30577, 30573, 30770, 30777, 30778,
+    30773, 30774, 30779, 30780, 30771, 30775, 30776, 30772, 30549, 30556,
+    30557, 30552, 30553, 30558, 30559, 30550, 30554, 30555, 30551, 30560,
+    30567, 30568, 30563, 30564, 30569, 30570, 30561, 30565, 30566, 30562,
+    30637, 30644, 30645, 30640, 30641, 30646, 30647, 30638, 30642, 30643,
+    30639, 30582, 30589, 30590, 30585, 30586, 30591, 30592, 30583, 30587,
+    30588, 30584, 30737, 30744, 30745, 30740, 30741, 30746, 30747, 30738,
+    30742, 30743, 30739, 30659, 30667, 30668, 30662, 30663, 30669, 30670,
+    30660, 30664, 30665, 30661, 30671, 30678, 30679, 30674, 30675, 30680,
+    30681, 30672, 30676, 30677, 30673, 30682, 30689, 30690, 30685, 30686,
+    30691, 30692, 30683, 30687, 30688, 30684, 30726, 30733, 30734, 30729,
+    30730, 30735, 30736, 30727, 30731, 30732, 30728, 30526, 30527, 30534,
+    30535, 30530, 30531, 30536, 30537, 30528, 30532, 30533, 30529, 30666,
+    28756, 28754, 28755, 13411, 17710, 17708, 17711, 17709, 17700, 17706,
+    17704, 17707, 17705, 17701, 17721, 17717, 17722, 17718, 17702, 17719,
+    17715, 17720, 17716, 17703, 17732, 17712, 17714, 17713, 17728, 17731,
+    17729, 17724, 17730, 17725, 17726, 17727, 17733, 17723, 17872, 17749,
+    17750, 17751, 17748, 17867, 17859, 15860, 15862, 15864, 15861, 15863,
+    16853, 16855, 16857, 16854, 16856, 16846, 16845, 16844, 16847, 23097,
+    23102, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762, 35762,
+    35762, 35762,
 };
 
-#define code_magic 47
-#define code_size 65536
-#define code_poly 65581
 
 static const unsigned int aliases_start = 0xf0000;
 static const unsigned int aliases_end = 0xf01d9;
diff --git a/Modules/xxlimited.c b/Modules/xxlimited.c
index 3935c00fc26530..19f61216255cfa 100644
--- a/Modules/xxlimited.c
+++ b/Modules/xxlimited.c
@@ -62,7 +62,14 @@
           pass
    */
 
-#define Py_LIMITED_API 0x030b0000
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
+#endif
 
 #include "Python.h"
 #include <string.h>
diff --git a/Modules/xxlimited_35.c b/Modules/xxlimited_35.c
index 1ff3ef1cb6f296..867820a6cb93fa 100644
--- a/Modules/xxlimited_35.c
+++ b/Modules/xxlimited_35.c
@@ -5,7 +5,13 @@
  * See the xxlimited module for an extension module template.
  */
 
+#ifndef _MSC_VER
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#endif
+
+#ifndef Py_GIL_DISABLED
 #define Py_LIMITED_API 0x03050000
+#endif
 
 #include "Python.h"
 
@@ -293,7 +299,6 @@ xx_modexec(PyObject *m)
 
 static PyModuleDef_Slot xx_slots[] = {
     {Py_mod_exec, xx_modexec},
-    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
     {0, NULL}
 };
 
diff --git a/Modules/xxsubtype.c b/Modules/xxsubtype.c
index 744ba7bf5d28b6..560f43e5b3a643 100644
--- a/Modules/xxsubtype.c
+++ b/Modules/xxsubtype.c
@@ -1,5 +1,8 @@
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
+#include <stddef.h>               // offsetof()
+#include <time.h>                 // clock()
+
 
 PyDoc_STRVAR(xxsubtype__doc__,
 "xxsubtype is an example module showing how to subtype builtin types from C.\n"
@@ -181,7 +184,7 @@ spamdict_init(spamdictobject *self, PyObject *args, PyObject *kwds)
 }
 
 static PyMemberDef spamdict_members[] = {
-    {"state", T_INT, offsetof(spamdictobject, state), READONLY,
+    {"state", Py_T_INT, offsetof(spamdictobject, state), Py_READONLY,
      PyDoc_STR("an int variable for demonstration purposes")},
     {0}
 };
@@ -274,12 +277,10 @@ xxsubtype_exec(PyObject* m)
     if (PyType_Ready(&spamdict_type) < 0)
         return -1;
 
-    if (PyModule_AddObject(m, "spamlist",
-                           Py_NewRef(&spamlist_type)) < 0)
+    if (PyModule_AddObjectRef(m, "spamlist", (PyObject *)&spamlist_type) < 0)
         return -1;
 
-    if (PyModule_AddObject(m, "spamdict",
-                           Py_NewRef(&spamdict_type)) < 0)
+    if (PyModule_AddObjectRef(m, "spamdict", (PyObject *)&spamdict_type) < 0)
         return -1;
     return 0;
 }
diff --git a/Modules/zlibmodule.c b/Modules/zlibmodule.c
index b67844a67c315c..fe9a6d8d4150ab 100644
--- a/Modules/zlibmodule.c
+++ b/Modules/zlibmodule.c
@@ -3,12 +3,15 @@
 
 /* Windows users:  read Python's PCbuild\readme.txt */
 
-#define PY_SSIZE_T_CLEAN
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
 
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
 #include "zlib.h"
 #include "stdbool.h"
+#include <stddef.h>               // offsetof()
 
 #if defined(ZLIB_VERNUM) && ZLIB_VERNUM < 0x1221
 #error "At least zlib version 1.2.2.1 is required"
@@ -1346,7 +1349,7 @@ typedef struct {
        decompress_buf() */
     Py_ssize_t avail_in_real;
     bool is_initialised;
-    char eof;           /* T_BOOL expects a char */
+    char eof;           /* Py_T_BOOL expects a char */
     char needs_input;
 } ZlibDecompressor;
 
@@ -1722,6 +1725,9 @@ ZlibDecompressor__new__(PyTypeObject *cls,
         return NULL;
     }
     ZlibDecompressor *self = PyObject_New(ZlibDecompressor, cls);
+    if (self == NULL) {
+        return NULL;
+    }
     self->eof = 0;
     self->needs_input = 1;
     self->avail_in_real = 0;
@@ -1800,9 +1806,9 @@ static PyMethodDef ZlibDecompressor_methods[] = {
 
 #define COMP_OFF(x) offsetof(compobject, x)
 static PyMemberDef Decomp_members[] = {
-    {"unused_data",     T_OBJECT, COMP_OFF(unused_data), READONLY},
-    {"unconsumed_tail", T_OBJECT, COMP_OFF(unconsumed_tail), READONLY},
-    {"eof",             T_BOOL,   COMP_OFF(eof), READONLY},
+    {"unused_data",     _Py_T_OBJECT, COMP_OFF(unused_data), Py_READONLY},
+    {"unconsumed_tail", _Py_T_OBJECT, COMP_OFF(unconsumed_tail), Py_READONLY},
+    {"eof",             Py_T_BOOL,   COMP_OFF(eof), Py_READONLY},
     {NULL},
 };
 
@@ -1816,11 +1822,11 @@ PyDoc_STRVAR(ZlibDecompressor_needs_input_doc,
 "True if more input is needed before more decompressed data can be produced.");
 
 static PyMemberDef ZlibDecompressor_members[] = {
-    {"eof", T_BOOL, offsetof(ZlibDecompressor, eof),
-     READONLY, ZlibDecompressor_eof__doc__},
-    {"unused_data", T_OBJECT_EX, offsetof(ZlibDecompressor, unused_data),
-     READONLY, ZlibDecompressor_unused_data__doc__},
-    {"needs_input", T_BOOL, offsetof(ZlibDecompressor, needs_input), READONLY,
+    {"eof", Py_T_BOOL, offsetof(ZlibDecompressor, eof),
+     Py_READONLY, ZlibDecompressor_eof__doc__},
+    {"unused_data", Py_T_OBJECT_EX, offsetof(ZlibDecompressor, unused_data),
+     Py_READONLY, ZlibDecompressor_unused_data__doc__},
+    {"needs_input", Py_T_BOOL, offsetof(ZlibDecompressor, needs_input), Py_READONLY,
      ZlibDecompressor_needs_input_doc},
     {NULL},
 };
@@ -1890,12 +1896,20 @@ zlib_crc32_impl(PyObject *module, Py_buffer *data, unsigned int value)
 
         Py_BEGIN_ALLOW_THREADS
         /* Avoid truncation of length for very large buffers. crc32() takes
-           length as an unsigned int, which may be narrower than Py_ssize_t. */
-        while ((size_t)len > UINT_MAX) {
-            value = crc32(value, buf, UINT_MAX);
-            buf += (size_t) UINT_MAX;
-            len -= (size_t) UINT_MAX;
+           length as an unsigned int, which may be narrower than Py_ssize_t.
+           We further limit size due to bugs in Apple's macOS zlib.
+           See https://github.com/python/cpython/issues/105967.
+         */
+#define ZLIB_CRC_CHUNK_SIZE 0x40000000
+#if ZLIB_CRC_CHUNK_SIZE > INT_MAX
+# error "unsupported less than 32-bit platform?"
+#endif
+        while ((size_t)len > ZLIB_CRC_CHUNK_SIZE) {
+            value = crc32(value, buf, ZLIB_CRC_CHUNK_SIZE);
+            buf += (size_t) ZLIB_CRC_CHUNK_SIZE;
+            len -= (size_t) ZLIB_CRC_CHUNK_SIZE;
         }
+#undef ZLIB_CRC_CHUNK_SIZE
         value = crc32(value, buf, (unsigned int)len);
         Py_END_ALLOW_THREADS
     } else {
@@ -2029,17 +2043,11 @@ zlib_exec(PyObject *mod)
     }
 
     state->ZlibError = PyErr_NewException("zlib.error", NULL, NULL);
-    if (state->ZlibError == NULL) {
-        return -1;
-    }
-
-    if (PyModule_AddObject(mod, "error", Py_NewRef(state->ZlibError)) < 0) {
-        Py_DECREF(state->ZlibError);
+    if (PyModule_AddObjectRef(mod, "error", state->ZlibError) < 0) {
         return -1;
     }
-    if (PyModule_AddObject(mod, "_ZlibDecompressor",
-                           Py_NewRef(state->ZlibDecompressorType)) < 0) {
-        Py_DECREF(state->ZlibDecompressorType);
+    if (PyModule_AddObjectRef(mod, "_ZlibDecompressor",
+                              (PyObject *)state->ZlibDecompressorType) < 0) {
         return -1;
     }
 
@@ -2081,26 +2089,14 @@ zlib_exec(PyObject *mod)
 #ifdef Z_TREES // 1.2.3.4, only for inflate
     ZLIB_ADD_INT_MACRO(Z_TREES);
 #endif
-    PyObject *ver = PyUnicode_FromString(ZLIB_VERSION);
-    if (ver == NULL) {
-        return -1;
-    }
-
-    if (PyModule_AddObject(mod, "ZLIB_VERSION", ver) < 0) {
-        Py_DECREF(ver);
+    if (PyModule_Add(mod, "ZLIB_VERSION",
+                     PyUnicode_FromString(ZLIB_VERSION)) < 0) {
         return -1;
     }
-
-    ver = PyUnicode_FromString(zlibVersion());
-    if (ver == NULL) {
+    if (PyModule_Add(mod, "ZLIB_RUNTIME_VERSION",
+                     PyUnicode_FromString(zlibVersion())) < 0) {
         return -1;
     }
-
-    if (PyModule_AddObject(mod, "ZLIB_RUNTIME_VERSION", ver) < 0) {
-        Py_DECREF(ver);
-        return -1;
-    }
-
     if (PyModule_AddStringConstant(mod, "__version__", "1.0") < 0) {
         return -1;
     }
diff --git a/Objects/abstract.c b/Objects/abstract.c
index e95785900c9c5f..1ec5c5b8c3dc2f 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -2,16 +2,17 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
+#include "pycore_pybuffer.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCallTstate()
+#include "pycore_crossinterp.h"   // _Py_CallInInterpreter()
 #include "pycore_object.h"        // _Py_CheckSlotResult()
 #include "pycore_long.h"          // _Py_IsNegative
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_unionobject.h"   // _PyUnion_Check()
-#include <ctype.h>
-#include <stddef.h>               // offsetof()
 
+#include <stddef.h>               // offsetof()
 
 
 /* Shorthands to return certain errors */
@@ -182,7 +183,7 @@ PyObject_GetItem(PyObject *o, PyObject *key)
             return Py_GenericAlias(o, key);
         }
 
-        if (_PyObject_LookupAttr(o, &_Py_ID(__class_getitem__), &meth) < 0) {
+        if (PyObject_GetOptionalAttr(o, &_Py_ID(__class_getitem__), &meth) < 0) {
             return NULL;
         }
         if (meth && meth != Py_None) {
@@ -199,6 +200,25 @@ PyObject_GetItem(PyObject *o, PyObject *key)
     return type_error("'%.200s' object is not subscriptable", o);
 }
 
+int
+PyMapping_GetOptionalItem(PyObject *obj, PyObject *key, PyObject **result)
+{
+    if (PyDict_CheckExact(obj)) {
+        return PyDict_GetItemRef(obj, key, result);
+    }
+
+    *result = PyObject_GetItem(obj, key);
+    if (*result) {
+        return 1;
+    }
+    assert(PyErr_Occurred());
+    if (!PyErr_ExceptionMatches(PyExc_KeyError)) {
+        return -1;
+    }
+    PyErr_Clear();
+    return 0;
+}
+
 int
 PyObject_SetItem(PyObject *o, PyObject *key, PyObject *value)
 {
@@ -294,11 +314,17 @@ PyObject_CheckBuffer(PyObject *obj)
     return (tp_as_buffer != NULL && tp_as_buffer->bf_getbuffer != NULL);
 }
 
+// Old buffer protocols (deprecated, abi only)
+
+/* Checks whether an arbitrary object supports the (character, single segment)
+   buffer interface.
+
+   Returns 1 on success, 0 on failure.
 
-/* We release the buffer right after use of this function which could
+   We release the buffer right after use of this function which could
    cause issues later on.  Don't use these functions in new code.
  */
-int
+PyAPI_FUNC(int) /* abi_only */
 PyObject_CheckReadBuffer(PyObject *obj)
 {
     PyBufferProcs *pb = Py_TYPE(obj)->tp_as_buffer;
@@ -333,7 +359,13 @@ as_read_buffer(PyObject *obj, const void **buffer, Py_ssize_t *buffer_len)
     return 0;
 }
 
-int
+/* Takes an arbitrary object which must support the (character, single segment)
+   buffer interface and returns a pointer to a read-only memory location
+   usable as character based input for subsequent processing.
+
+   Return 0 on success.  buffer and buffer_len are only set in case no error
+   occurs. Otherwise, -1 is returned and an exception set. */
+PyAPI_FUNC(int) /* abi_only */
 PyObject_AsCharBuffer(PyObject *obj,
                       const char **buffer,
                       Py_ssize_t *buffer_len)
@@ -341,16 +373,30 @@ PyObject_AsCharBuffer(PyObject *obj,
     return as_read_buffer(obj, (const void **)buffer, buffer_len);
 }
 
-int PyObject_AsReadBuffer(PyObject *obj,
-                          const void **buffer,
-                          Py_ssize_t *buffer_len)
+/* Same as PyObject_AsCharBuffer() except that this API expects (readable,
+   single segment) buffer interface and returns a pointer to a read-only memory
+   location which can contain arbitrary data.
+
+   0 is returned on success.  buffer and buffer_len are only set in case no
+   error occurs.  Otherwise, -1 is returned and an exception set. */
+PyAPI_FUNC(int) /* abi_only */
+PyObject_AsReadBuffer(PyObject *obj,
+                      const void **buffer,
+                      Py_ssize_t *buffer_len)
 {
     return as_read_buffer(obj, buffer, buffer_len);
 }
 
-int PyObject_AsWriteBuffer(PyObject *obj,
-                           void **buffer,
-                           Py_ssize_t *buffer_len)
+/* Takes an arbitrary object which must support the (writable, single segment)
+   buffer interface and returns a pointer to a writable memory location in
+   buffer of size 'buffer_len'.
+
+   Return 0 on success.  buffer and buffer_len are only set in case no error
+   occurs. Otherwise, -1 is returned and an exception set. */
+PyAPI_FUNC(int) /* abi_only */
+PyObject_AsWriteBuffer(PyObject *obj,
+                       void **buffer,
+                       Py_ssize_t *buffer_len)
 {
     PyBufferProcs *pb;
     Py_buffer view;
@@ -491,7 +537,7 @@ PyBuffer_GetPointer(const Py_buffer *view, const Py_ssize_t *indices)
 }
 
 
-void
+static void
 _Py_add_one_to_index_F(int nd, Py_ssize_t *index, const Py_ssize_t *shape)
 {
     int k;
@@ -507,7 +553,7 @@ _Py_add_one_to_index_F(int nd, Py_ssize_t *index, const Py_ssize_t *shape)
     }
 }
 
-void
+static void
 _Py_add_one_to_index_C(int nd, Py_ssize_t *index, const Py_ssize_t *shape)
 {
     int k;
@@ -757,6 +803,27 @@ PyBuffer_Release(Py_buffer *view)
     Py_DECREF(obj);
 }
 
+static int
+_buffer_release_call(void *arg)
+{
+    PyBuffer_Release((Py_buffer *)arg);
+    return 0;
+}
+
+int
+_PyBuffer_ReleaseInInterpreter(PyInterpreterState *interp,
+                               Py_buffer *view)
+{
+    return _Py_CallInInterpreter(interp, _buffer_release_call, view);
+}
+
+int
+_PyBuffer_ReleaseInInterpreterAndRawFree(PyInterpreterState *interp,
+                                         Py_buffer *view)
+{
+    return _Py_CallInInterpreterAndRawFree(interp, _buffer_release_call, view);
+}
+
 PyObject *
 PyObject_Format(PyObject *obj, PyObject *format_spec)
 {
@@ -1113,29 +1180,10 @@ PyNumber_Multiply(PyObject *v, PyObject *w)
     return result;
 }
 
-PyObject *
-PyNumber_MatrixMultiply(PyObject *v, PyObject *w)
-{
-    return binary_op(v, w, NB_SLOT(nb_matrix_multiply), "@");
-}
-
-PyObject *
-PyNumber_FloorDivide(PyObject *v, PyObject *w)
-{
-    return binary_op(v, w, NB_SLOT(nb_floor_divide), "//");
-}
-
-PyObject *
-PyNumber_TrueDivide(PyObject *v, PyObject *w)
-{
-    return binary_op(v, w, NB_SLOT(nb_true_divide), "/");
-}
-
-PyObject *
-PyNumber_Remainder(PyObject *v, PyObject *w)
-{
-    return binary_op(v, w, NB_SLOT(nb_remainder), "%");
-}
+BINARY_FUNC(PyNumber_MatrixMultiply, nb_matrix_multiply, "@")
+BINARY_FUNC(PyNumber_FloorDivide, nb_floor_divide, "//")
+BINARY_FUNC(PyNumber_TrueDivide, nb_true_divide, "/")
+BINARY_FUNC(PyNumber_Remainder, nb_remainder, "%")
 
 PyObject *
 PyNumber_Power(PyObject *v, PyObject *w, PyObject *z)
@@ -1312,73 +1360,27 @@ _PyNumber_InPlacePowerNoMod(PyObject *lhs, PyObject *rhs)
 
 /* Unary operators and functions */
 
-PyObject *
-PyNumber_Negative(PyObject *o)
-{
-    if (o == NULL) {
-        return null_error();
-    }
-
-    PyNumberMethods *m = Py_TYPE(o)->tp_as_number;
-    if (m && m->nb_negative) {
-        PyObject *res = (*m->nb_negative)(o);
-        assert(_Py_CheckSlotResult(o, "__neg__", res != NULL));
-        return res;
-    }
-
-    return type_error("bad operand type for unary -: '%.200s'", o);
-}
-
-PyObject *
-PyNumber_Positive(PyObject *o)
-{
-    if (o == NULL) {
-        return null_error();
-    }
-
-    PyNumberMethods *m = Py_TYPE(o)->tp_as_number;
-    if (m && m->nb_positive) {
-        PyObject *res = (*m->nb_positive)(o);
-        assert(_Py_CheckSlotResult(o, "__pos__", res != NULL));
-        return res;
-    }
-
-    return type_error("bad operand type for unary +: '%.200s'", o);
-}
-
-PyObject *
-PyNumber_Invert(PyObject *o)
-{
-    if (o == NULL) {
-        return null_error();
-    }
-
-    PyNumberMethods *m = Py_TYPE(o)->tp_as_number;
-    if (m && m->nb_invert) {
-        PyObject *res = (*m->nb_invert)(o);
-        assert(_Py_CheckSlotResult(o, "__invert__", res != NULL));
-        return res;
-    }
-
-    return type_error("bad operand type for unary ~: '%.200s'", o);
-}
-
-PyObject *
-PyNumber_Absolute(PyObject *o)
-{
-    if (o == NULL) {
-        return null_error();
-    }
-
-    PyNumberMethods *m = Py_TYPE(o)->tp_as_number;
-    if (m && m->nb_absolute) {
-        PyObject *res = m->nb_absolute(o);
-        assert(_Py_CheckSlotResult(o, "__abs__", res != NULL));
-        return res;
-    }
-
-    return type_error("bad operand type for abs(): '%.200s'", o);
-}
+#define UNARY_FUNC(func, op, meth_name, descr)                           \
+    PyObject *                                                           \
+    func(PyObject *o) {                                                  \
+        if (o == NULL) {                                                 \
+            return null_error();                                         \
+        }                                                                \
+                                                                         \
+        PyNumberMethods *m = Py_TYPE(o)->tp_as_number;                   \
+        if (m && m->op) {                                                \
+            PyObject *res = (*m->op)(o);                                 \
+            assert(_Py_CheckSlotResult(o, #meth_name, res != NULL));     \
+            return res;                                                  \
+        }                                                                \
+                                                                         \
+        return type_error("bad operand type for "descr": '%.200s'", o);  \
+    }
+
+UNARY_FUNC(PyNumber_Negative, nb_negative, __neg__, "unary -")
+UNARY_FUNC(PyNumber_Positive, nb_positive, __pow__, "unary +")
+UNARY_FUNC(PyNumber_Invert, nb_invert, __invert__, "unary ~")
+UNARY_FUNC(PyNumber_Absolute, nb_absolute, __abs__, "abs()")
 
 
 int
@@ -2340,6 +2342,24 @@ PyMapping_GetItemString(PyObject *o, const char *key)
     return r;
 }
 
+int
+PyMapping_GetOptionalItemString(PyObject *obj, const char *key, PyObject **result)
+{
+    if (key == NULL) {
+        *result = NULL;
+        null_error();
+        return -1;
+    }
+    PyObject *okey = PyUnicode_FromString(key);
+    if (okey == NULL) {
+        *result = NULL;
+        return -1;
+    }
+    int rc = PyMapping_GetOptionalItem(obj, okey, result);
+    Py_DECREF(okey);
+    return rc;
+}
+
 int
 PyMapping_SetItemString(PyObject *o, const char *key, PyObject *value)
 {
@@ -2360,31 +2380,71 @@ PyMapping_SetItemString(PyObject *o, const char *key, PyObject *value)
 }
 
 int
-PyMapping_HasKeyString(PyObject *o, const char *key)
+PyMapping_HasKeyStringWithError(PyObject *obj, const char *key)
 {
-    PyObject *v;
+    PyObject *res;
+    int rc = PyMapping_GetOptionalItemString(obj, key, &res);
+    Py_XDECREF(res);
+    return rc;
+}
 
-    v = PyMapping_GetItemString(o, key);
-    if (v) {
-        Py_DECREF(v);
-        return 1;
-    }
-    PyErr_Clear();
-    return 0;
+int
+PyMapping_HasKeyWithError(PyObject *obj, PyObject *key)
+{
+    PyObject *res;
+    int rc = PyMapping_GetOptionalItem(obj, key, &res);
+    Py_XDECREF(res);
+    return rc;
 }
 
 int
-PyMapping_HasKey(PyObject *o, PyObject *key)
+PyMapping_HasKeyString(PyObject *obj, const char *key)
 {
-    PyObject *v;
+    PyObject *value;
+    int rc;
+    if (obj == NULL) {
+        // For backward compatibility.
+        // PyMapping_GetOptionalItemString() crashes if obj is NULL.
+        null_error();
+        rc = -1;
+    }
+    else {
+        rc = PyMapping_GetOptionalItemString(obj, key, &value);
+    }
+    if (rc < 0) {
+        PyErr_FormatUnraisable(
+            "Exception ignored in PyMapping_HasKeyString(); consider using "
+            "PyMapping_HasKeyStringWithError(), "
+            "PyMapping_GetOptionalItemString() or PyMapping_GetItemString()");
+        return 0;
+    }
+    Py_XDECREF(value);
+    return rc;
+}
 
-    v = PyObject_GetItem(o, key);
-    if (v) {
-        Py_DECREF(v);
-        return 1;
+int
+PyMapping_HasKey(PyObject *obj, PyObject *key)
+{
+    PyObject *value;
+    int rc;
+    if (obj == NULL || key == NULL) {
+        // For backward compatibility.
+        // PyMapping_GetOptionalItem() crashes if any of them is NULL.
+        null_error();
+        rc = -1;
     }
-    PyErr_Clear();
-    return 0;
+    else {
+        rc = PyMapping_GetOptionalItem(obj, key, &value);
+    }
+    if (rc < 0) {
+        PyErr_FormatUnraisable(
+            "Exception ignored in PyMapping_HasKey(); consider using "
+            "PyMapping_HasKeyWithError(), "
+            "PyMapping_GetOptionalItem() or PyObject_GetItem()");
+        return 0;
+    }
+    Py_XDECREF(value);
+    return rc;
 }
 
 /* This function is quite similar to PySequence_Fast(), but specialized to be
@@ -2486,7 +2546,7 @@ abstract_get_bases(PyObject *cls)
 {
     PyObject *bases;
 
-    (void)_PyObject_LookupAttr(cls, &_Py_ID(__bases__), &bases);
+    (void)PyObject_GetOptionalAttr(cls, &_Py_ID(__bases__), &bases);
     if (bases != NULL && !PyTuple_Check(bases)) {
         Py_DECREF(bases);
         return NULL;
@@ -2570,7 +2630,7 @@ object_isinstance(PyObject *inst, PyObject *cls)
     if (PyType_Check(cls)) {
         retval = PyObject_TypeCheck(inst, (PyTypeObject *)cls);
         if (retval == 0) {
-            retval = _PyObject_LookupAttr(inst, &_Py_ID(__class__), &icls);
+            retval = PyObject_GetOptionalAttr(inst, &_Py_ID(__class__), &icls);
             if (icls != NULL) {
                 if (icls != (PyObject *)(Py_TYPE(inst)) && PyType_Check(icls)) {
                     retval = PyType_IsSubtype(
@@ -2588,7 +2648,7 @@ object_isinstance(PyObject *inst, PyObject *cls)
         if (!check_class(cls,
             "isinstance() arg 2 must be a type, a tuple of types, or a union"))
             return -1;
-        retval = _PyObject_LookupAttr(inst, &_Py_ID(__class__), &icls);
+        retval = PyObject_GetOptionalAttr(inst, &_Py_ID(__class__), &icls);
         if (icls != NULL) {
             retval = abstract_issubclass(icls, cls);
             Py_DECREF(icls);
@@ -2746,7 +2806,7 @@ object_issubclass(PyThreadState *tstate, PyObject *derived, PyObject *cls)
         return -1;
     }
 
-    /* Probably never reached anymore. */
+    /* Can be reached when infinite recursion happens. */
     return recursive_issubclass(derived, cls);
 }
 
@@ -2880,80 +2940,3 @@ PyIter_Send(PyObject *iter, PyObject *arg, PyObject **result)
     }
     return PYGEN_ERROR;
 }
-
-/*
- * Flatten a sequence of bytes() objects into a C array of
- * NULL terminated string pointers with a NULL char* terminating the array.
- * (ie: an argv or env list)
- *
- * Memory allocated for the returned list is allocated using PyMem_Malloc()
- * and MUST be freed by _Py_FreeCharPArray().
- */
-char *const *
-_PySequence_BytesToCharpArray(PyObject* self)
-{
-    char **array;
-    Py_ssize_t i, argc;
-    PyObject *item = NULL;
-    Py_ssize_t size;
-
-    argc = PySequence_Size(self);
-    if (argc == -1)
-        return NULL;
-
-    assert(argc >= 0);
-
-    if ((size_t)argc > (PY_SSIZE_T_MAX-sizeof(char *)) / sizeof(char *)) {
-        PyErr_NoMemory();
-        return NULL;
-    }
-
-    array = PyMem_Malloc((argc + 1) * sizeof(char *));
-    if (array == NULL) {
-        PyErr_NoMemory();
-        return NULL;
-    }
-    for (i = 0; i < argc; ++i) {
-        char *data;
-        item = PySequence_GetItem(self, i);
-        if (item == NULL) {
-            /* NULL terminate before freeing. */
-            array[i] = NULL;
-            goto fail;
-        }
-        /* check for embedded null bytes */
-        if (PyBytes_AsStringAndSize(item, &data, NULL) < 0) {
-            /* NULL terminate before freeing. */
-            array[i] = NULL;
-            goto fail;
-        }
-        size = PyBytes_GET_SIZE(item) + 1;
-        array[i] = PyMem_Malloc(size);
-        if (!array[i]) {
-            PyErr_NoMemory();
-            goto fail;
-        }
-        memcpy(array[i], data, size);
-        Py_DECREF(item);
-    }
-    array[argc] = NULL;
-
-    return array;
-
-fail:
-    Py_XDECREF(item);
-    _Py_FreeCharPArray(array);
-    return NULL;
-}
-
-
-/* Free's a NULL terminated char** array of C strings. */
-void
-_Py_FreeCharPArray(char *const array[])
-{
-    Py_ssize_t i;
-    for (i = 0; array[i] != NULL; ++i) {
-        PyMem_Free(array[i]);
-    }
-    PyMem_Free((void*)array);
-}
diff --git a/Objects/boolobject.c b/Objects/boolobject.c
index 0300f7bb4e3dc0..fb48dcbeca7850 100644
--- a/Objects/boolobject.c
+++ b/Objects/boolobject.c
@@ -1,8 +1,9 @@
 /* Boolean type, a subtype of int */
 
 #include "Python.h"
-#include "pycore_object.h"      // _Py_FatalRefcountError()
-#include "pycore_long.h"        // FALSE_TAG TRUE_TAG
+#include "pycore_long.h"          // FALSE_TAG TRUE_TAG
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
+#include "pycore_object.h"        // _Py_FatalRefcountError()
 #include "pycore_runtime.h"       // _Py_ID()
 
 #include <stddef.h>
@@ -12,21 +13,14 @@
 static PyObject *
 bool_repr(PyObject *self)
 {
-    PyObject *res = self == Py_True ? &_Py_ID(True) : &_Py_ID(False);
-    return Py_NewRef(res);
+    return self == Py_True ? &_Py_ID(True) : &_Py_ID(False);
 }
 
 /* Function to return a bool from a C long */
 
 PyObject *PyBool_FromLong(long ok)
 {
-    PyObject *result;
-
-    if (ok)
-        result = Py_True;
-    else
-        result = Py_False;
-    return Py_NewRef(result);
+    return ok ? Py_True : Py_False;
 }
 
 /* We define bool_new to always return either Py_True or Py_False */
@@ -116,9 +110,10 @@ bool_xor(PyObject *a, PyObject *b)
 /* Doc string */
 
 PyDoc_STRVAR(bool_doc,
-"bool(x) -> bool\n\
+"bool(object=False, /)\n\
+--\n\
 \n\
-Returns True when the argument x is true, False otherwise.\n\
+Returns True when the argument is true, False otherwise.\n\
 The builtins True and False are the only two instances of the class bool.\n\
 The class bool is a subclass of the class int, and cannot be subclassed.");
 
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index c36db59baaa10d..659de7d3dd5a99 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -1,10 +1,10 @@
 /* PyByteArray (bytearray) implementation */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
 #include "pycore_bytes_methods.h"
 #include "pycore_bytesobject.h"
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
 #include "pycore_strhex.h"        // _Py_strhex_with_sep()
 #include "pycore_long.h"          // _PyLong_FromUnsignedChar()
@@ -1377,7 +1377,7 @@ bytearray.maketrans
     to: Py_buffer
     /
 
-Return a translation table useable for the bytes or bytearray translate method.
+Return a translation table usable for the bytes or bytearray translate method.
 
 The returned table will be one where each byte in frm is mapped to the byte at
 the same position in to.
@@ -1387,7 +1387,7 @@ The bytes objects frm and to must be of the same length.
 
 static PyObject *
 bytearray_maketrans_impl(Py_buffer *frm, Py_buffer *to)
-/*[clinic end generated code: output=1df267d99f56b15e input=5925a81d2fbbf151]*/
+/*[clinic end generated code: output=1df267d99f56b15e input=b10de38c85950a63]*/
 {
     return _Py_bytes_maketrans(frm, to);
 }
@@ -2007,7 +2007,10 @@ static PyObject *
 bytearray_join(PyByteArrayObject *self, PyObject *iterable_of_bytes)
 /*[clinic end generated code: output=a8516370bf68ae08 input=aba6b1f9b30fcb8e]*/
 {
-    return stringlib_bytes_join((PyObject*)self, iterable_of_bytes);
+    self->ob_exports++; // this protects `self` from being cleared/resized if `iterable_of_bytes` is a custom iterator
+    PyObject* ret = stringlib_bytes_join((PyObject*)self, iterable_of_bytes);
+    self->ob_exports--; // unexport `self`
+    return ret;
 }
 
 /*[clinic input]
diff --git a/Objects/bytes_methods.c b/Objects/bytes_methods.c
index 33aa9c3db6e805..c1bc6383df30ce 100644
--- a/Objects/bytes_methods.c
+++ b/Objects/bytes_methods.c
@@ -1,4 +1,3 @@
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_abstract.h"   // _PyIndex_Check()
 #include "pycore_bytes_methods.h"
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index abbf3eeb16c35c..26227dd251122d 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -1,14 +1,13 @@
 /* bytes object implementation */
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
-#include "pycore_bytesobject.h"   // _PyBytes_Find(), _PyBytes_Repeat()
 #include "pycore_bytes_methods.h" // _Py_bytes_startswith()
+#include "pycore_bytesobject.h"   // _PyBytes_Find(), _PyBytes_Repeat()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_format.h"        // F_LJUST
-#include "pycore_global_objects.h"  // _Py_GET_GLOBAL_OBJECT()
+#include "pycore_global_objects.h"// _Py_GET_GLOBAL_OBJECT()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_long.h"          // _PyLong_DigitValue
 #include "pycore_object.h"        // _PyObject_GC_TRACK
@@ -43,17 +42,12 @@ Py_LOCAL_INLINE(Py_ssize_t) _PyBytesWriter_GetSize(_PyBytesWriter *writer,
 #define EMPTY (&_Py_SINGLETON(bytes_empty))
 
 
-// Return a borrowed reference to the empty bytes string singleton.
+// Return a reference to the immortal empty bytes string singleton.
 static inline PyObject* bytes_get_empty(void)
 {
-    return &EMPTY->ob_base.ob_base;
-}
-
-
-// Return a strong reference to the empty bytes string singleton.
-static inline PyObject* bytes_new_empty(void)
-{
-    return Py_NewRef(EMPTY);
+    PyObject *empty = &EMPTY->ob_base.ob_base;
+    assert(_Py_IsImmortal(empty));
+    return empty;
 }
 
 
@@ -86,7 +80,7 @@ _PyBytes_FromSize(Py_ssize_t size, int use_calloc)
     assert(size >= 0);
 
     if (size == 0) {
-        return bytes_new_empty();
+        return bytes_get_empty();
     }
 
     if ((size_t)size > (size_t)PY_SSIZE_T_MAX - PyBytesObject_SIZE) {
@@ -125,10 +119,11 @@ PyBytes_FromStringAndSize(const char *str, Py_ssize_t size)
     }
     if (size == 1 && str != NULL) {
         op = CHARACTER(*str & 255);
-        return Py_NewRef(op);
+        assert(_Py_IsImmortal(op));
+        return (PyObject *)op;
     }
     if (size == 0) {
-        return bytes_new_empty();
+        return bytes_get_empty();
     }
 
     op = (PyBytesObject *)_PyBytes_FromSize(size, 0);
@@ -156,11 +151,12 @@ PyBytes_FromString(const char *str)
     }
 
     if (size == 0) {
-        return bytes_new_empty();
+        return bytes_get_empty();
     }
     else if (size == 1) {
         op = CHARACTER(*str & 255);
-        return Py_NewRef(op);
+        assert(_Py_IsImmortal(op));
+        return (PyObject *)op;
     }
 
     /* Inline PyObject_NewVar */
@@ -726,11 +722,11 @@ _PyBytes_FormatEx(const char *format, Py_ssize_t format_len,
                 if (--fmtcnt >= 0)
                     c = *fmt++;
             }
-            else if (c >= 0 && isdigit(c)) {
+            else if (c >= 0 && Py_ISDIGIT(c)) {
                 width = c - '0';
                 while (--fmtcnt >= 0) {
                     c = Py_CHARMASK(*fmt++);
-                    if (!isdigit(c))
+                    if (!Py_ISDIGIT(c))
                         break;
                     if (width > (PY_SSIZE_T_MAX - ((int)c - '0')) / 10) {
                         PyErr_SetString(
@@ -757,7 +753,7 @@ _PyBytes_FormatEx(const char *format, Py_ssize_t format_len,
                             "* wants int");
                         goto error;
                     }
-                    prec = _PyLong_AsInt(v);
+                    prec = PyLong_AsInt(v);
                     if (prec == -1 && PyErr_Occurred())
                         goto error;
                     if (prec < 0)
@@ -765,11 +761,11 @@ _PyBytes_FormatEx(const char *format, Py_ssize_t format_len,
                     if (--fmtcnt >= 0)
                         c = *fmt++;
                 }
-                else if (c >= 0 && isdigit(c)) {
+                else if (c >= 0 && Py_ISDIGIT(c)) {
                     prec = c - '0';
                     while (--fmtcnt >= 0) {
                         c = Py_CHARMASK(*fmt++);
-                        if (!isdigit(c))
+                        if (!Py_ISDIGIT(c))
                             break;
                         if (prec > (INT_MAX - ((int)c - '0')) / 10) {
                             PyErr_SetString(
@@ -1274,8 +1270,25 @@ _PyBytes_Find(const char *haystack, Py_ssize_t len_haystack,
               const char *needle, Py_ssize_t len_needle,
               Py_ssize_t offset)
 {
-    return stringlib_find(haystack, len_haystack,
-                          needle, len_needle, offset);
+    assert(len_haystack >= 0);
+    assert(len_needle >= 0);
+    // Extra checks because stringlib_find accesses haystack[len_haystack].
+    if (len_needle == 0) {
+        return offset;
+    }
+    if (len_needle > len_haystack) {
+        return -1;
+    }
+    assert(len_haystack >= 1);
+    Py_ssize_t res = stringlib_find(haystack, len_haystack - 1,
+                                    needle, len_needle, offset);
+    if (res == -1) {
+        Py_ssize_t last_align = len_haystack - len_needle;
+        if (memcmp(haystack + last_align, needle, len_needle) == 0) {
+            return offset + last_align;
+        }
+    }
+    return res;
 }
 
 Py_ssize_t
@@ -2154,7 +2167,7 @@ bytes.maketrans
     to: Py_buffer
     /
 
-Return a translation table useable for the bytes or bytearray translate method.
+Return a translation table usable for the bytes or bytearray translate method.
 
 The returned table will be one where each byte in frm is mapped to the byte at
 the same position in to.
@@ -2164,7 +2177,7 @@ The bytes objects frm and to must be of the same length.
 
 static PyObject *
 bytes_maketrans_impl(Py_buffer *frm, Py_buffer *to)
-/*[clinic end generated code: output=a36f6399d4b77f6f input=de7a8fc5632bb8f1]*/
+/*[clinic end generated code: output=a36f6399d4b77f6f input=a3bd00d430a0979f]*/
 {
     return _Py_bytes_maketrans(frm, to);
 }
@@ -2367,8 +2380,6 @@ _PyBytes_FromHex(PyObject *string, int use_bytearray)
     writer.use_bytearray = use_bytearray;
 
     assert(PyUnicode_Check(string));
-    if (PyUnicode_READY(string))
-        return NULL;
     hexlen = PyUnicode_GET_LENGTH(string);
 
     if (!PyUnicode_IS_ASCII(string)) {
@@ -3052,7 +3063,7 @@ _PyBytes_Resize(PyObject **pv, Py_ssize_t newsize)
         goto error;
     }
     if (newsize == 0) {
-        *pv = bytes_new_empty();
+        *pv = bytes_get_empty();
         Py_DECREF(v);
         return 0;
     }
diff --git a/Objects/call.c b/Objects/call.c
index 0d548dcd5e1aed..b1610dababd466 100644
--- a/Objects/call.c
+++ b/Objects/call.c
@@ -2,6 +2,8 @@
 #include "pycore_call.h"          // _PyObject_CallNoArgsTstate()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCallTstate()
 #include "pycore_dict.h"          // _PyDict_FromItems()
+#include "pycore_function.h"      // _PyFunction_Vectorcall() definition
+#include "pycore_modsupport.h"    // _Py_VaBuildStack()
 #include "pycore_object.h"        // _PyCFunctionWithKeywords_TrampolineCall()
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
@@ -106,9 +108,9 @@ PyObject_CallNoArgs(PyObject *func)
 
 
 PyObject *
-_PyObject_FastCallDictTstate(PyThreadState *tstate, PyObject *callable,
-                             PyObject *const *args, size_t nargsf,
-                             PyObject *kwargs)
+_PyObject_VectorcallDictTstate(PyThreadState *tstate, PyObject *callable,
+                               PyObject *const *args, size_t nargsf,
+                               PyObject *kwargs)
 {
     assert(callable != NULL);
 
@@ -122,7 +124,7 @@ _PyObject_FastCallDictTstate(PyThreadState *tstate, PyObject *callable,
     assert(nargs == 0 || args != NULL);
     assert(kwargs == NULL || PyDict_Check(kwargs));
 
-    vectorcallfunc func = _PyVectorcall_Function(callable);
+    vectorcallfunc func = PyVectorcall_Function(callable);
     if (func == NULL) {
         /* Use tp_call instead */
         return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwargs);
@@ -154,7 +156,7 @@ PyObject_VectorcallDict(PyObject *callable, PyObject *const *args,
                        size_t nargsf, PyObject *kwargs)
 {
     PyThreadState *tstate = _PyThreadState_GET();
-    return _PyObject_FastCallDictTstate(tstate, callable, args, nargsf, kwargs);
+    return _PyObject_VectorcallDictTstate(tstate, callable, args, nargsf, kwargs);
 }
 
 static void
@@ -172,7 +174,7 @@ object_is_not_callable(PyThreadState *tstate, PyObject *callable)
             goto basic_type_error;
         }
         PyObject *attr;
-        int res = _PyObject_LookupAttr(callable, name, &attr);
+        int res = PyObject_GetOptionalAttr(callable, name, &attr);
         if (res < 0) {
             _PyErr_Clear(tstate);
         }
@@ -327,14 +329,6 @@ PyObject_Vectorcall(PyObject *callable, PyObject *const *args,
 }
 
 
-PyObject *
-_PyObject_FastCall(PyObject *func, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyThreadState *tstate = _PyThreadState_GET();
-    return _PyObject_FastCallTstate(tstate, func, args, nargs);
-}
-
-
 PyObject *
 _PyObject_Call(PyThreadState *tstate, PyObject *callable,
                PyObject *args, PyObject *kwargs)
@@ -349,7 +343,7 @@ _PyObject_Call(PyThreadState *tstate, PyObject *callable,
     assert(PyTuple_Check(args));
     assert(kwargs == NULL || PyDict_Check(kwargs));
     EVAL_CALL_STAT_INC_IF_FUNCTION(EVAL_CALL_API, callable);
-    vectorcallfunc vector_func = _PyVectorcall_Function(callable);
+    vectorcallfunc vector_func = PyVectorcall_Function(callable);
     if (vector_func != NULL) {
         return _PyVectorcall_Call(tstate, vector_func, callable, args, kwargs);
     }
@@ -380,11 +374,11 @@ PyObject_Call(PyObject *callable, PyObject *args, PyObject *kwargs)
 }
 
 
-PyObject *
+/* Function removed in the Python 3.13 API but kept in the stable ABI. */
+PyAPI_FUNC(PyObject *)
 PyCFunction_Call(PyObject *callable, PyObject *args, PyObject *kwargs)
 {
-    PyThreadState *tstate = _PyThreadState_GET();
-    return _PyObject_Call(tstate, callable, args, kwargs);
+    return PyObject_Call(callable, args, kwargs);
 }
 
 
@@ -426,8 +420,9 @@ _PyFunction_Vectorcall(PyObject *func, PyObject* const* stack,
 /* --- More complex call functions -------------------------------- */
 
 /* External interface to call any callable object.
-   The args must be a tuple or NULL.  The kwargs must be a dict or NULL. */
-PyObject *
+   The args must be a tuple or NULL.  The kwargs must be a dict or NULL.
+   Function removed in Python 3.13 API but kept in the stable ABI. */
+PyAPI_FUNC(PyObject*)
 PyEval_CallObjectWithKeywords(PyObject *callable,
                               PyObject *args, PyObject *kwargs)
 {
@@ -452,7 +447,8 @@ PyEval_CallObjectWithKeywords(PyObject *callable,
     }
 
     if (args == NULL) {
-        return _PyObject_FastCallDictTstate(tstate, callable, NULL, 0, kwargs);
+        return _PyObject_VectorcallDictTstate(tstate, callable,
+                                              NULL, 0, kwargs);
     }
     else {
         return _PyObject_Call(tstate, callable, args, kwargs);
@@ -505,9 +501,9 @@ _PyObject_Call_Prepend(PyThreadState *tstate, PyObject *callable,
            _PyTuple_ITEMS(args),
            argcount * sizeof(PyObject *));
 
-    PyObject *result = _PyObject_FastCallDictTstate(tstate, callable,
-                                                    stack, argcount + 1,
-                                                    kwargs);
+    PyObject *result = _PyObject_VectorcallDictTstate(tstate, callable,
+                                                      stack, argcount + 1,
+                                                      kwargs);
     if (stack != small_stack) {
         PyMem_Free(stack);
     }
@@ -519,7 +515,7 @@ _PyObject_Call_Prepend(PyThreadState *tstate, PyObject *callable,
 
 static PyObject *
 _PyObject_CallFunctionVa(PyThreadState *tstate, PyObject *callable,
-                         const char *format, va_list va, int is_size_t)
+                         const char *format, va_list va)
 {
     PyObject* small_stack[_PY_FASTCALL_SMALL_STACK];
     const Py_ssize_t small_stack_len = Py_ARRAY_LENGTH(small_stack);
@@ -535,14 +531,8 @@ _PyObject_CallFunctionVa(PyThreadState *tstate, PyObject *callable,
         return _PyObject_CallNoArgsTstate(tstate, callable);
     }
 
-    if (is_size_t) {
-        stack = _Py_VaBuildStack_SizeT(small_stack, small_stack_len,
-                                       format, va, &nargs);
-    }
-    else {
-        stack = _Py_VaBuildStack(small_stack, small_stack_len,
-                                 format, va, &nargs);
-    }
+    stack = _Py_VaBuildStack(small_stack, small_stack_len,
+                             format, va, &nargs);
     if (stack == NULL) {
         return NULL;
     }
@@ -581,7 +571,7 @@ PyObject_CallFunction(PyObject *callable, const char *format, ...)
     PyThreadState *tstate = _PyThreadState_GET();
 
     va_start(va, format);
-    result = _PyObject_CallFunctionVa(tstate, callable, format, va, 0);
+    result = _PyObject_CallFunctionVa(tstate, callable, format, va);
     va_end(va);
 
     return result;
@@ -589,9 +579,8 @@ PyObject_CallFunction(PyObject *callable, const char *format, ...)
 
 
 /* PyEval_CallFunction is exact copy of PyObject_CallFunction.
- * This function is kept for backward compatibility.
- */
-PyObject *
+   Function removed in Python 3.13 API but kept in the stable ABI. */
+PyAPI_FUNC(PyObject*)
 PyEval_CallFunction(PyObject *callable, const char *format, ...)
 {
     va_list va;
@@ -599,21 +588,24 @@ PyEval_CallFunction(PyObject *callable, const char *format, ...)
     PyThreadState *tstate = _PyThreadState_GET();
 
     va_start(va, format);
-    result = _PyObject_CallFunctionVa(tstate, callable, format, va, 0);
+    result = _PyObject_CallFunctionVa(tstate, callable, format, va);
     va_end(va);
 
     return result;
 }
 
 
-PyObject *
+/* _PyObject_CallFunction_SizeT is exact copy of PyObject_CallFunction.
+ * This function must be kept because it is part of the stable ABI.
+ */
+PyAPI_FUNC(PyObject *)  /* abi_only */
 _PyObject_CallFunction_SizeT(PyObject *callable, const char *format, ...)
 {
     PyThreadState *tstate = _PyThreadState_GET();
 
     va_list va;
     va_start(va, format);
-    PyObject *result = _PyObject_CallFunctionVa(tstate, callable, format, va, 1);
+    PyObject *result = _PyObject_CallFunctionVa(tstate, callable, format, va);
     va_end(va);
 
     return result;
@@ -621,7 +613,7 @@ _PyObject_CallFunction_SizeT(PyObject *callable, const char *format, ...)
 
 
 static PyObject*
-callmethod(PyThreadState *tstate, PyObject* callable, const char *format, va_list va, int is_size_t)
+callmethod(PyThreadState *tstate, PyObject* callable, const char *format, va_list va)
 {
     assert(callable != NULL);
     if (!PyCallable_Check(callable)) {
@@ -631,7 +623,7 @@ callmethod(PyThreadState *tstate, PyObject* callable, const char *format, va_lis
         return NULL;
     }
 
-    return _PyObject_CallFunctionVa(tstate, callable, format, va, is_size_t);
+    return _PyObject_CallFunctionVa(tstate, callable, format, va);
 }
 
 PyObject *
@@ -650,7 +642,7 @@ PyObject_CallMethod(PyObject *obj, const char *name, const char *format, ...)
 
     va_list va;
     va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 0);
+    PyObject *retval = callmethod(tstate, callable, format, va);
     va_end(va);
 
     Py_DECREF(callable);
@@ -659,9 +651,8 @@ PyObject_CallMethod(PyObject *obj, const char *name, const char *format, ...)
 
 
 /* PyEval_CallMethod is exact copy of PyObject_CallMethod.
- * This function is kept for backward compatibility.
- */
-PyObject *
+   Function removed in Python 3.13 API but kept in the stable ABI. */
+PyAPI_FUNC(PyObject*)
 PyEval_CallMethod(PyObject *obj, const char *name, const char *format, ...)
 {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -676,7 +667,7 @@ PyEval_CallMethod(PyObject *obj, const char *name, const char *format, ...)
 
     va_list va;
     va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 0);
+    PyObject *retval = callmethod(tstate, callable, format, va);
     va_end(va);
 
     Py_DECREF(callable);
@@ -700,7 +691,7 @@ _PyObject_CallMethod(PyObject *obj, PyObject *name,
 
     va_list va;
     va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 1);
+    PyObject *retval = callmethod(tstate, callable, format, va);
     va_end(va);
 
     Py_DECREF(callable);
@@ -724,7 +715,7 @@ _PyObject_CallMethodId(PyObject *obj, _Py_Identifier *name,
 
     va_list va;
     va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 0);
+    PyObject *retval = callmethod(tstate, callable, format, va);
     va_end(va);
 
     Py_DECREF(callable);
@@ -737,13 +728,15 @@ PyObject * _PyObject_CallMethodFormat(PyThreadState *tstate, PyObject *callable,
 {
     va_list va;
     va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 0);
+    PyObject *retval = callmethod(tstate, callable, format, va);
     va_end(va);
     return retval;
 }
 
 
-PyObject *
+// _PyObject_CallMethod_SizeT is exact copy of PyObject_CallMethod.
+// This function must be kept because it is part of the stable ABI.
+PyAPI_FUNC(PyObject *)  /* abi_only */
 _PyObject_CallMethod_SizeT(PyObject *obj, const char *name,
                            const char *format, ...)
 {
@@ -759,31 +752,7 @@ _PyObject_CallMethod_SizeT(PyObject *obj, const char *name,
 
     va_list va;
     va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 1);
-    va_end(va);
-
-    Py_DECREF(callable);
-    return retval;
-}
-
-
-PyObject *
-_PyObject_CallMethodId_SizeT(PyObject *obj, _Py_Identifier *name,
-                             const char *format, ...)
-{
-    PyThreadState *tstate = _PyThreadState_GET();
-    if (obj == NULL || name == NULL) {
-        return null_error(tstate);
-    }
-
-    PyObject *callable = _PyObject_GetAttrId(obj, name);
-    if (callable == NULL) {
-        return NULL;
-    }
-
-    va_list va;
-    va_start(va, format);
-    PyObject *retval = callmethod(tstate, callable, format, va, 1);
+    PyObject *retval = callmethod(tstate, callable, format, va);
     va_end(va);
 
     Py_DECREF(callable);
diff --git a/Objects/capsule.c b/Objects/capsule.c
index baaddb3f1f0849..555979dab2b789 100644
--- a/Objects/capsule.c
+++ b/Objects/capsule.c
@@ -1,6 +1,10 @@
 /* Wrap void * pointers to be passed between C modules */
 
 #include "Python.h"
+#include "pycore_capsule.h"       // export _PyCapsule_SetTraverse()
+#include "pycore_gc.h"            // _PyObject_GC_IS_TRACKED()
+#include "pycore_object.h"        // _PyObject_GC_TRACK()
+
 
 /* Internal structure of PyCapsule */
 typedef struct {
@@ -9,18 +13,28 @@ typedef struct {
     const char *name;
     void *context;
     PyCapsule_Destructor destructor;
+    traverseproc traverse_func;
+    inquiry clear_func;
 } PyCapsule;
 
 
 
 static int
-_is_legal_capsule(PyCapsule *capsule, const char *invalid_capsule)
+_is_legal_capsule(PyObject *op, const char *invalid_capsule)
 {
-    if (!capsule || !PyCapsule_CheckExact(capsule) || capsule->pointer == NULL) {
-        PyErr_SetString(PyExc_ValueError, invalid_capsule);
-        return 0;
+    if (!op || !PyCapsule_CheckExact(op)) {
+        goto error;
+    }
+    PyCapsule *capsule = (PyCapsule *)op;
+
+    if (capsule->pointer == NULL) {
+        goto error;
     }
     return 1;
+
+error:
+    PyErr_SetString(PyExc_ValueError, invalid_capsule);
+    return 0;
 }
 
 #define is_legal_capsule(capsule, name) \
@@ -50,7 +64,7 @@ PyCapsule_New(void *pointer, const char *name, PyCapsule_Destructor destructor)
         return NULL;
     }
 
-    capsule = PyObject_New(PyCapsule, &PyCapsule_Type);
+    capsule = PyObject_GC_New(PyCapsule, &PyCapsule_Type);
     if (capsule == NULL) {
         return NULL;
     }
@@ -59,15 +73,18 @@ PyCapsule_New(void *pointer, const char *name, PyCapsule_Destructor destructor)
     capsule->name = name;
     capsule->context = NULL;
     capsule->destructor = destructor;
+    capsule->traverse_func = NULL;
+    capsule->clear_func = NULL;
+    // Only track the object by the GC when _PyCapsule_SetTraverse() is called
 
     return (PyObject *)capsule;
 }
 
 
 int
-PyCapsule_IsValid(PyObject *o, const char *name)
+PyCapsule_IsValid(PyObject *op, const char *name)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
+    PyCapsule *capsule = (PyCapsule *)op;
 
     return (capsule != NULL &&
             PyCapsule_CheckExact(capsule) &&
@@ -77,13 +94,12 @@ PyCapsule_IsValid(PyObject *o, const char *name)
 
 
 void *
-PyCapsule_GetPointer(PyObject *o, const char *name)
+PyCapsule_GetPointer(PyObject *op, const char *name)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_GetPointer")) {
+    if (!is_legal_capsule(op, "PyCapsule_GetPointer")) {
         return NULL;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
 
     if (!name_matches(name, capsule->name)) {
         PyErr_SetString(PyExc_ValueError, "PyCapsule_GetPointer called with incorrect name");
@@ -95,52 +111,48 @@ PyCapsule_GetPointer(PyObject *o, const char *name)
 
 
 const char *
-PyCapsule_GetName(PyObject *o)
+PyCapsule_GetName(PyObject *op)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_GetName")) {
+    if (!is_legal_capsule(op, "PyCapsule_GetName")) {
         return NULL;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
     return capsule->name;
 }
 
 
 PyCapsule_Destructor
-PyCapsule_GetDestructor(PyObject *o)
+PyCapsule_GetDestructor(PyObject *op)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_GetDestructor")) {
+    if (!is_legal_capsule(op, "PyCapsule_GetDestructor")) {
         return NULL;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
     return capsule->destructor;
 }
 
 
 void *
-PyCapsule_GetContext(PyObject *o)
+PyCapsule_GetContext(PyObject *op)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_GetContext")) {
+    if (!is_legal_capsule(op, "PyCapsule_GetContext")) {
         return NULL;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
     return capsule->context;
 }
 
 
 int
-PyCapsule_SetPointer(PyObject *o, void *pointer)
+PyCapsule_SetPointer(PyObject *op, void *pointer)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!pointer) {
-        PyErr_SetString(PyExc_ValueError, "PyCapsule_SetPointer called with null pointer");
+    if (!is_legal_capsule(op, "PyCapsule_SetPointer")) {
         return -1;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
 
-    if (!is_legal_capsule(capsule, "PyCapsule_SetPointer")) {
+    if (!pointer) {
+        PyErr_SetString(PyExc_ValueError, "PyCapsule_SetPointer called with null pointer");
         return -1;
     }
 
@@ -150,13 +162,12 @@ PyCapsule_SetPointer(PyObject *o, void *pointer)
 
 
 int
-PyCapsule_SetName(PyObject *o, const char *name)
+PyCapsule_SetName(PyObject *op, const char *name)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_SetName")) {
+    if (!is_legal_capsule(op, "PyCapsule_SetName")) {
         return -1;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
 
     capsule->name = name;
     return 0;
@@ -164,13 +175,12 @@ PyCapsule_SetName(PyObject *o, const char *name)
 
 
 int
-PyCapsule_SetDestructor(PyObject *o, PyCapsule_Destructor destructor)
+PyCapsule_SetDestructor(PyObject *op, PyCapsule_Destructor destructor)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_SetDestructor")) {
+    if (!is_legal_capsule(op, "PyCapsule_SetDestructor")) {
         return -1;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
 
     capsule->destructor = destructor;
     return 0;
@@ -178,19 +188,42 @@ PyCapsule_SetDestructor(PyObject *o, PyCapsule_Destructor destructor)
 
 
 int
-PyCapsule_SetContext(PyObject *o, void *context)
+PyCapsule_SetContext(PyObject *op, void *context)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
-
-    if (!is_legal_capsule(capsule, "PyCapsule_SetContext")) {
+    if (!is_legal_capsule(op, "PyCapsule_SetContext")) {
         return -1;
     }
+    PyCapsule *capsule = (PyCapsule *)op;
 
     capsule->context = context;
     return 0;
 }
 
 
+int
+_PyCapsule_SetTraverse(PyObject *op, traverseproc traverse_func, inquiry clear_func)
+{
+    if (!is_legal_capsule(op, "_PyCapsule_SetTraverse")) {
+        return -1;
+    }
+    PyCapsule *capsule = (PyCapsule *)op;
+
+    if (traverse_func == NULL || clear_func == NULL) {
+        PyErr_SetString(PyExc_ValueError,
+                        "_PyCapsule_SetTraverse() called with NULL callback");
+        return -1;
+    }
+
+    if (!_PyObject_GC_IS_TRACKED(op)) {
+        _PyObject_GC_TRACK(op);
+    }
+
+    capsule->traverse_func = traverse_func;
+    capsule->clear_func = clear_func;
+    return 0;
+}
+
+
 void *
 PyCapsule_Import(const char *name, int no_block)
 {
@@ -249,13 +282,14 @@ PyCapsule_Import(const char *name, int no_block)
 
 
 static void
-capsule_dealloc(PyObject *o)
+capsule_dealloc(PyObject *op)
 {
-    PyCapsule *capsule = (PyCapsule *)o;
+    PyCapsule *capsule = (PyCapsule *)op;
+    PyObject_GC_UnTrack(op);
     if (capsule->destructor) {
-        capsule->destructor(o);
+        capsule->destructor(op);
     }
-    PyObject_Free(o);
+    PyObject_GC_Del(op);
 }
 
 
@@ -279,6 +313,27 @@ capsule_repr(PyObject *o)
 }
 
 
+static int
+capsule_traverse(PyCapsule *capsule, visitproc visit, void *arg)
+{
+    // Capsule object is only tracked by the GC
+    // if _PyCapsule_SetTraverse() is called
+    assert(capsule->traverse_func != NULL);
+
+    return capsule->traverse_func((PyObject*)capsule, visit, arg);
+}
+
+
+static int
+capsule_clear(PyCapsule *capsule)
+{
+    // Capsule object is only tracked by the GC
+    // if _PyCapsule_SetTraverse() is called
+    assert(capsule->clear_func != NULL);
+
+    return capsule->clear_func((PyObject*)capsule);
+}
+
 
 PyDoc_STRVAR(PyCapsule_Type__doc__,
 "Capsule objects let you wrap a C \"void *\" pointer in a Python\n\
@@ -293,27 +348,14 @@ Python import mechanism to link to one another.\n\
 
 PyTypeObject PyCapsule_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
-    "PyCapsule",                /*tp_name*/
-    sizeof(PyCapsule),          /*tp_basicsize*/
-    0,                          /*tp_itemsize*/
-    /* methods */
-    capsule_dealloc, /*tp_dealloc*/
-    0,                          /*tp_vectorcall_offset*/
-    0,                          /*tp_getattr*/
-    0,                          /*tp_setattr*/
-    0,                          /*tp_as_async*/
-    capsule_repr, /*tp_repr*/
-    0,                          /*tp_as_number*/
-    0,                          /*tp_as_sequence*/
-    0,                          /*tp_as_mapping*/
-    0,                          /*tp_hash*/
-    0,                          /*tp_call*/
-    0,                          /*tp_str*/
-    0,                          /*tp_getattro*/
-    0,                          /*tp_setattro*/
-    0,                          /*tp_as_buffer*/
-    0,                          /*tp_flags*/
-    PyCapsule_Type__doc__       /*tp_doc*/
+    .tp_name = "PyCapsule",
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
+    .tp_basicsize = sizeof(PyCapsule),
+    .tp_dealloc = capsule_dealloc,
+    .tp_repr = capsule_repr,
+    .tp_doc = PyCapsule_Type__doc__,
+    .tp_traverse = (traverseproc)capsule_traverse,
+    .tp_clear = (inquiry)capsule_clear,
 };
 
 
diff --git a/Objects/cellobject.c b/Objects/cellobject.c
index f516707f6f8086..f1a43be38b2b58 100644
--- a/Objects/cellobject.c
+++ b/Objects/cellobject.c
@@ -1,6 +1,7 @@
 /* Cell object implementation */
 
 #include "Python.h"
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 #include "pycore_object.h"
 
 PyObject *
diff --git a/Objects/classobject.c b/Objects/classobject.c
index 71c4a4e5d0f8ab..618d88894debbe 100644
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -2,10 +2,11 @@
 
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_VectorcallTstate()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_object.h"
 #include "pycore_pyerrors.h"
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "structmember.h"         // PyMemberDef
+
 
 #include "clinic/classobject.c.h"
 
@@ -48,6 +49,7 @@ method_vectorcall(PyObject *method, PyObject *const *args,
     PyObject *self = PyMethod_GET_SELF(method);
     PyObject *func = PyMethod_GET_FUNCTION(method);
     Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+    assert(nargs == 0 || args[nargs-1]);
 
     PyObject *result;
     if (nargsf & PY_VECTORCALL_ARGUMENTS_OFFSET) {
@@ -56,6 +58,7 @@ method_vectorcall(PyObject *method, PyObject *const *args,
         nargs += 1;
         PyObject *tmp = newargs[0];
         newargs[0] = self;
+        assert(newargs[nargs-1]);
         result = _PyObject_VectorcallTstate(tstate, func, newargs,
                                             nargs, kwnames);
         newargs[0] = tmp;
@@ -150,9 +153,9 @@ static PyMethodDef method_methods[] = {
 #define MO_OFF(x) offsetof(PyMethodObject, x)
 
 static PyMemberDef method_memberlist[] = {
-    {"__func__", T_OBJECT, MO_OFF(im_func), READONLY,
+    {"__func__", _Py_T_OBJECT, MO_OFF(im_func), Py_READONLY,
      "the function (or other callable) implementing a method"},
-    {"__self__", T_OBJECT, MO_OFF(im_self), READONLY,
+    {"__self__", _Py_T_OBJECT, MO_OFF(im_self), Py_READONLY,
      "the instance to which a method is bound"},
     {NULL}      /* Sentinel */
 };
@@ -275,9 +278,9 @@ method_repr(PyMethodObject *a)
     PyObject *funcname, *result;
     const char *defname = "?";
 
-    if (_PyObject_LookupAttr(func, &_Py_ID(__qualname__), &funcname) < 0 ||
+    if (PyObject_GetOptionalAttr(func, &_Py_ID(__qualname__), &funcname) < 0 ||
         (funcname == NULL &&
-         _PyObject_LookupAttr(func, &_Py_ID(__name__), &funcname) < 0))
+         PyObject_GetOptionalAttr(func, &_Py_ID(__name__), &funcname) < 0))
     {
         return NULL;
     }
@@ -372,7 +375,7 @@ PyInstanceMethod_Function(PyObject *im)
 #define IMO_OFF(x) offsetof(PyInstanceMethodObject, x)
 
 static PyMemberDef instancemethod_memberlist[] = {
-    {"__func__", T_OBJECT, IMO_OFF(func), READONLY,
+    {"__func__", _Py_T_OBJECT, IMO_OFF(func), Py_READONLY,
      "the function (or other callable) implementing a method"},
     {NULL}      /* Sentinel */
 };
@@ -479,7 +482,7 @@ instancemethod_repr(PyObject *self)
         return NULL;
     }
 
-    if (_PyObject_LookupAttr(func, &_Py_ID(__name__), &funcname) < 0) {
+    if (PyObject_GetOptionalAttr(func, &_Py_ID(__name__), &funcname) < 0) {
         return NULL;
     }
     if (funcname != NULL && !PyUnicode_Check(funcname)) {
diff --git a/Objects/clinic/bytearrayobject.c.h b/Objects/clinic/bytearrayobject.c.h
index e7bf3183af8522..d95245067e2608 100644
--- a/Objects/clinic/bytearrayobject.c.h
+++ b/Objects/clinic/bytearrayobject.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static int
 bytearray___init___impl(PyByteArrayObject *self, PyObject *arg,
@@ -161,10 +162,6 @@ bytearray_removeprefix(PyByteArrayObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &prefix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&prefix, 'C')) {
-        _PyArg_BadArgument("removeprefix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytearray_removeprefix_impl(self, &prefix);
 
 exit:
@@ -201,10 +198,6 @@ bytearray_removesuffix(PyByteArrayObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &suffix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&suffix, 'C')) {
-        _PyArg_BadArgument("removesuffix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytearray_removesuffix_impl(self, &suffix);
 
 exit:
@@ -289,7 +282,7 @@ PyDoc_STRVAR(bytearray_maketrans__doc__,
 "maketrans(frm, to, /)\n"
 "--\n"
 "\n"
-"Return a translation table useable for the bytes or bytearray translate method.\n"
+"Return a translation table usable for the bytes or bytearray translate method.\n"
 "\n"
 "The returned table will be one where each byte in frm is mapped to the byte at\n"
 "the same position in to.\n"
@@ -315,17 +308,9 @@ bytearray_maketrans(void *null, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &frm, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&frm, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &to, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&to, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = bytearray_maketrans_impl(&frm, &to);
 
 exit:
@@ -375,17 +360,9 @@ bytearray_replace(PyByteArrayObject *self, PyObject *const *args, Py_ssize_t nar
     if (PyObject_GetBuffer(args[0], &old, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&old, 'C')) {
-        _PyArg_BadArgument("replace", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &new, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&new, 'C')) {
-        _PyArg_BadArgument("replace", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (nargs < 3) {
         goto skip_optional;
     }
@@ -1120,9 +1097,6 @@ bytearray_fromhex(PyTypeObject *type, PyObject *arg)
         _PyArg_BadArgument("fromhex", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     string = arg;
     return_value = bytearray_fromhex_impl(type, string);
 
@@ -1206,7 +1180,7 @@ bytearray_hex(PyByteArrayObject *self, PyObject *const *args, Py_ssize_t nargs,
             goto skip_optional_pos;
         }
     }
-    bytes_per_sep = _PyLong_AsInt(args[1]);
+    bytes_per_sep = PyLong_AsInt(args[1]);
     if (bytes_per_sep == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1259,7 +1233,7 @@ bytearray_reduce_ex(PyByteArrayObject *self, PyObject *const *args, Py_ssize_t n
     if (nargs < 1) {
         goto skip_optional;
     }
-    proto = _PyLong_AsInt(args[0]);
+    proto = PyLong_AsInt(args[0]);
     if (proto == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1287,4 +1261,4 @@ bytearray_sizeof(PyByteArrayObject *self, PyObject *Py_UNUSED(ignored))
 {
     return bytearray_sizeof_impl(self);
 }
-/*[clinic end generated code: output=022698e8b0faa272 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0797a5e03cda2a16 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytesobject.c.h b/Objects/clinic/bytesobject.c.h
index 060056dafbd84f..1e45be3e7aefb3 100644
--- a/Objects/clinic/bytesobject.c.h
+++ b/Objects/clinic/bytesobject.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(bytes___bytes____doc__,
 "__bytes__($self, /)\n"
@@ -140,10 +141,6 @@ bytes_partition(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &sep, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&sep, 'C')) {
-        _PyArg_BadArgument("partition", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_partition_impl(self, &sep);
 
 exit:
@@ -183,10 +180,6 @@ bytes_rpartition(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &sep, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&sep, 'C')) {
-        _PyArg_BadArgument("rpartition", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_rpartition_impl(self, &sep);
 
 exit:
@@ -476,7 +469,7 @@ PyDoc_STRVAR(bytes_maketrans__doc__,
 "maketrans(frm, to, /)\n"
 "--\n"
 "\n"
-"Return a translation table useable for the bytes or bytearray translate method.\n"
+"Return a translation table usable for the bytes or bytearray translate method.\n"
 "\n"
 "The returned table will be one where each byte in frm is mapped to the byte at\n"
 "the same position in to.\n"
@@ -502,17 +495,9 @@ bytes_maketrans(void *null, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &frm, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&frm, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &to, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&to, 'C')) {
-        _PyArg_BadArgument("maketrans", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = bytes_maketrans_impl(&frm, &to);
 
 exit:
@@ -562,17 +547,9 @@ bytes_replace(PyBytesObject *self, PyObject *const *args, Py_ssize_t nargs)
     if (PyObject_GetBuffer(args[0], &old, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&old, 'C')) {
-        _PyArg_BadArgument("replace", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     if (PyObject_GetBuffer(args[1], &new, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&new, 'C')) {
-        _PyArg_BadArgument("replace", "argument 2", "contiguous buffer", args[1]);
-        goto exit;
-    }
     if (nargs < 3) {
         goto skip_optional;
     }
@@ -628,10 +605,6 @@ bytes_removeprefix(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &prefix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&prefix, 'C')) {
-        _PyArg_BadArgument("removeprefix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_removeprefix_impl(self, &prefix);
 
 exit:
@@ -668,10 +641,6 @@ bytes_removesuffix(PyBytesObject *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &suffix, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&suffix, 'C')) {
-        _PyArg_BadArgument("removesuffix", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = bytes_removesuffix_impl(self, &suffix);
 
 exit:
@@ -875,9 +844,6 @@ bytes_fromhex(PyTypeObject *type, PyObject *arg)
         _PyArg_BadArgument("fromhex", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     string = arg;
     return_value = bytes_fromhex_impl(type, string);
 
@@ -961,7 +927,7 @@ bytes_hex(PyBytesObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
             goto skip_optional_pos;
         }
     }
-    bytes_per_sep = _PyLong_AsInt(args[1]);
+    bytes_per_sep = PyLong_AsInt(args[1]);
     if (bytes_per_sep == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1063,4 +1029,4 @@ bytes_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=31a9e4af85562612 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8a49dbbd78914a6f input=a9049054013a1b77]*/
diff --git a/Objects/clinic/classobject.c.h b/Objects/clinic/classobject.c.h
index a7bac63052bc40..3e149c97324a6a 100644
--- a/Objects/clinic/classobject.c.h
+++ b/Objects/clinic/classobject.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(method___reduce____doc__,
 "__reduce__($self, /)\n"
@@ -86,4 +82,4 @@ instancemethod_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2a5e7fa5947a86cb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5a5e3f2d0726f189 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/codeobject.c.h b/Objects/clinic/codeobject.c.h
index 5ad4b1fed73417..68e2d7f528c061 100644
--- a/Objects/clinic/codeobject.c.h
+++ b/Objects/clinic/codeobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(code_new__doc__,
 "code(argcount, posonlyargcount, kwonlyargcount, nlocals, stacksize,\n"
@@ -57,27 +57,27 @@ code_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     if (!_PyArg_CheckPositional("code", PyTuple_GET_SIZE(args), 16, 18)) {
         goto exit;
     }
-    argcount = _PyLong_AsInt(PyTuple_GET_ITEM(args, 0));
+    argcount = PyLong_AsInt(PyTuple_GET_ITEM(args, 0));
     if (argcount == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    posonlyargcount = _PyLong_AsInt(PyTuple_GET_ITEM(args, 1));
+    posonlyargcount = PyLong_AsInt(PyTuple_GET_ITEM(args, 1));
     if (posonlyargcount == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    kwonlyargcount = _PyLong_AsInt(PyTuple_GET_ITEM(args, 2));
+    kwonlyargcount = PyLong_AsInt(PyTuple_GET_ITEM(args, 2));
     if (kwonlyargcount == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    nlocals = _PyLong_AsInt(PyTuple_GET_ITEM(args, 3));
+    nlocals = PyLong_AsInt(PyTuple_GET_ITEM(args, 3));
     if (nlocals == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    stacksize = _PyLong_AsInt(PyTuple_GET_ITEM(args, 4));
+    stacksize = PyLong_AsInt(PyTuple_GET_ITEM(args, 4));
     if (stacksize == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    flags = _PyLong_AsInt(PyTuple_GET_ITEM(args, 5));
+    flags = PyLong_AsInt(PyTuple_GET_ITEM(args, 5));
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -105,27 +105,18 @@ code_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         _PyArg_BadArgument("code", "argument 11", "str", PyTuple_GET_ITEM(args, 10));
         goto exit;
     }
-    if (PyUnicode_READY(PyTuple_GET_ITEM(args, 10)) == -1) {
-        goto exit;
-    }
     filename = PyTuple_GET_ITEM(args, 10);
     if (!PyUnicode_Check(PyTuple_GET_ITEM(args, 11))) {
         _PyArg_BadArgument("code", "argument 12", "str", PyTuple_GET_ITEM(args, 11));
         goto exit;
     }
-    if (PyUnicode_READY(PyTuple_GET_ITEM(args, 11)) == -1) {
-        goto exit;
-    }
     name = PyTuple_GET_ITEM(args, 11);
     if (!PyUnicode_Check(PyTuple_GET_ITEM(args, 12))) {
         _PyArg_BadArgument("code", "argument 13", "str", PyTuple_GET_ITEM(args, 12));
         goto exit;
     }
-    if (PyUnicode_READY(PyTuple_GET_ITEM(args, 12)) == -1) {
-        goto exit;
-    }
     qualname = PyTuple_GET_ITEM(args, 12);
-    firstlineno = _PyLong_AsInt(PyTuple_GET_ITEM(args, 13));
+    firstlineno = PyLong_AsInt(PyTuple_GET_ITEM(args, 13));
     if (firstlineno == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -163,12 +154,7 @@ code_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 }
 
 PyDoc_STRVAR(code_replace__doc__,
-"replace($self, /, *, co_argcount=-1, co_posonlyargcount=-1,\n"
-"        co_kwonlyargcount=-1, co_nlocals=-1, co_stacksize=-1,\n"
-"        co_flags=-1, co_firstlineno=-1, co_code=None, co_consts=None,\n"
-"        co_names=None, co_varnames=None, co_freevars=None,\n"
-"        co_cellvars=None, co_filename=None, co_name=None,\n"
-"        co_qualname=None, co_linetable=None, co_exceptiontable=None)\n"
+"replace($self, /, **changes)\n"
 "--\n"
 "\n"
 "Return a copy of the code object with new values for the specified fields.");
@@ -180,13 +166,12 @@ static PyObject *
 code_replace_impl(PyCodeObject *self, int co_argcount,
                   int co_posonlyargcount, int co_kwonlyargcount,
                   int co_nlocals, int co_stacksize, int co_flags,
-                  int co_firstlineno, PyBytesObject *co_code,
-                  PyObject *co_consts, PyObject *co_names,
-                  PyObject *co_varnames, PyObject *co_freevars,
-                  PyObject *co_cellvars, PyObject *co_filename,
-                  PyObject *co_name, PyObject *co_qualname,
-                  PyBytesObject *co_linetable,
-                  PyBytesObject *co_exceptiontable);
+                  int co_firstlineno, PyObject *co_code, PyObject *co_consts,
+                  PyObject *co_names, PyObject *co_varnames,
+                  PyObject *co_freevars, PyObject *co_cellvars,
+                  PyObject *co_filename, PyObject *co_name,
+                  PyObject *co_qualname, PyObject *co_linetable,
+                  PyObject *co_exceptiontable);
 
 static PyObject *
 code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -226,7 +211,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
     int co_stacksize = self->co_stacksize;
     int co_flags = self->co_flags;
     int co_firstlineno = self->co_firstlineno;
-    PyBytesObject *co_code = NULL;
+    PyObject *co_code = NULL;
     PyObject *co_consts = self->co_consts;
     PyObject *co_names = self->co_names;
     PyObject *co_varnames = NULL;
@@ -235,8 +220,8 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
     PyObject *co_filename = self->co_filename;
     PyObject *co_name = self->co_name;
     PyObject *co_qualname = self->co_qualname;
-    PyBytesObject *co_linetable = (PyBytesObject *)self->co_linetable;
-    PyBytesObject *co_exceptiontable = (PyBytesObject *)self->co_exceptiontable;
+    PyObject *co_linetable = self->co_linetable;
+    PyObject *co_exceptiontable = self->co_exceptiontable;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 0, 0, argsbuf);
     if (!args) {
@@ -246,7 +231,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         goto skip_optional_kwonly;
     }
     if (args[0]) {
-        co_argcount = _PyLong_AsInt(args[0]);
+        co_argcount = PyLong_AsInt(args[0]);
         if (co_argcount == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -255,7 +240,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         }
     }
     if (args[1]) {
-        co_posonlyargcount = _PyLong_AsInt(args[1]);
+        co_posonlyargcount = PyLong_AsInt(args[1]);
         if (co_posonlyargcount == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -264,7 +249,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         }
     }
     if (args[2]) {
-        co_kwonlyargcount = _PyLong_AsInt(args[2]);
+        co_kwonlyargcount = PyLong_AsInt(args[2]);
         if (co_kwonlyargcount == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -273,7 +258,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         }
     }
     if (args[3]) {
-        co_nlocals = _PyLong_AsInt(args[3]);
+        co_nlocals = PyLong_AsInt(args[3]);
         if (co_nlocals == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -282,7 +267,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         }
     }
     if (args[4]) {
-        co_stacksize = _PyLong_AsInt(args[4]);
+        co_stacksize = PyLong_AsInt(args[4]);
         if (co_stacksize == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -291,7 +276,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         }
     }
     if (args[5]) {
-        co_flags = _PyLong_AsInt(args[5]);
+        co_flags = PyLong_AsInt(args[5]);
         if (co_flags == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -300,7 +285,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         }
     }
     if (args[6]) {
-        co_firstlineno = _PyLong_AsInt(args[6]);
+        co_firstlineno = PyLong_AsInt(args[6]);
         if (co_firstlineno == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -313,7 +298,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
             _PyArg_BadArgument("replace", "argument 'co_code'", "bytes", args[7]);
             goto exit;
         }
-        co_code = (PyBytesObject *)args[7];
+        co_code = args[7];
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -373,9 +358,6 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
             _PyArg_BadArgument("replace", "argument 'co_filename'", "str", args[13]);
             goto exit;
         }
-        if (PyUnicode_READY(args[13]) == -1) {
-            goto exit;
-        }
         co_filename = args[13];
         if (!--noptargs) {
             goto skip_optional_kwonly;
@@ -386,9 +368,6 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
             _PyArg_BadArgument("replace", "argument 'co_name'", "str", args[14]);
             goto exit;
         }
-        if (PyUnicode_READY(args[14]) == -1) {
-            goto exit;
-        }
         co_name = args[14];
         if (!--noptargs) {
             goto skip_optional_kwonly;
@@ -399,9 +378,6 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
             _PyArg_BadArgument("replace", "argument 'co_qualname'", "str", args[15]);
             goto exit;
         }
-        if (PyUnicode_READY(args[15]) == -1) {
-            goto exit;
-        }
         co_qualname = args[15];
         if (!--noptargs) {
             goto skip_optional_kwonly;
@@ -412,7 +388,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
             _PyArg_BadArgument("replace", "argument 'co_linetable'", "bytes", args[16]);
             goto exit;
         }
-        co_linetable = (PyBytesObject *)args[16];
+        co_linetable = args[16];
         if (!--noptargs) {
             goto skip_optional_kwonly;
         }
@@ -421,7 +397,7 @@ code_replace(PyCodeObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         _PyArg_BadArgument("replace", "argument 'co_exceptiontable'", "bytes", args[17]);
         goto exit;
     }
-    co_exceptiontable = (PyBytesObject *)args[17];
+    co_exceptiontable = args[17];
 skip_optional_kwonly:
     return_value = code_replace_impl(self, co_argcount, co_posonlyargcount, co_kwonlyargcount, co_nlocals, co_stacksize, co_flags, co_firstlineno, co_code, co_consts, co_names, co_varnames, co_freevars, co_cellvars, co_filename, co_name, co_qualname, co_linetable, co_exceptiontable);
 
@@ -479,7 +455,7 @@ code__varname_from_oparg(PyCodeObject *self, PyObject *const *args, Py_ssize_t n
     if (!args) {
         goto exit;
     }
-    oparg = _PyLong_AsInt(args[0]);
+    oparg = PyLong_AsInt(args[0]);
     if (oparg == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -488,4 +464,4 @@ code__varname_from_oparg(PyCodeObject *self, PyObject *const *args, Py_ssize_t n
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f1fab6e71c785182 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d604263a3ca72a0f input=a9049054013a1b77]*/
diff --git a/Objects/clinic/complexobject.c.h b/Objects/clinic/complexobject.c.h
index e92c6e985852de..49b50304021f7b 100644
--- a/Objects/clinic/complexobject.c.h
+++ b/Objects/clinic/complexobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(complex_conjugate__doc__,
 "conjugate($self, /)\n"
@@ -65,9 +65,6 @@ complex___format__(PyComplexObject *self, PyObject *arg)
         _PyArg_BadArgument("__format__", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     format_spec = arg;
     return_value = complex___format___impl(self, format_spec);
 
@@ -160,4 +157,4 @@ complex_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=52e85a1e258425d6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=04e6261649967b30 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/descrobject.c.h b/Objects/clinic/descrobject.c.h
index 75706437df83f9..02fb440d9c83af 100644
--- a/Objects/clinic/descrobject.c.h
+++ b/Objects/clinic/descrobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static PyObject *
 mappingproxy_new_impl(PyTypeObject *type, PyObject *mapping);
@@ -167,4 +167,4 @@ property_init(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=8dc1ddfcf764ac8e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a4664ccf3da10f5a input=a9049054013a1b77]*/
diff --git a/Objects/clinic/dictobject.c.h b/Objects/clinic/dictobject.c.h
index bc2452330e4e2f..641514235c2341 100644
--- a/Objects/clinic/dictobject.c.h
+++ b/Objects/clinic/dictobject.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(dict_fromkeys__doc__,
 "fromkeys($type, iterable, value=None, /)\n"
@@ -197,4 +193,4 @@ dict___reversed__(PyDictObject *self, PyObject *Py_UNUSED(ignored))
 {
     return dict___reversed___impl(self);
 }
-/*[clinic end generated code: output=c0064abbea6091c5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=17c3c4cf9a9b95a7 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/enumobject.c.h b/Objects/clinic/enumobject.c.h
index adf78efd0d66f4..09774a73c8145c 100644
--- a/Objects/clinic/enumobject.c.h
+++ b/Objects/clinic/enumobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(enum_new__doc__,
 "enumerate(iterable, start=0)\n"
@@ -107,4 +107,4 @@ reversed_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=aba0ddbeab1601e3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5c48a9a482a52e91 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/floatobject.c.h b/Objects/clinic/floatobject.c.h
index a99fd74e4b621b..10f6149cc88c22 100644
--- a/Objects/clinic/floatobject.c.h
+++ b/Objects/clinic/floatobject.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(float_is_integer__doc__,
 "is_integer($self, /)\n"
@@ -316,13 +312,10 @@ float___format__(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("__format__", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     format_spec = arg;
     return_value = float___format___impl(self, format_spec);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=ea329577074911b9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c79743c8551c30d9 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/funcobject.c.h b/Objects/clinic/funcobject.c.h
index c3a3a8edc39278..138f87716acbf7 100644
--- a/Objects/clinic/funcobject.c.h
+++ b/Objects/clinic/funcobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(func_new__doc__,
 "function(code, globals, name=None, argdefs=None, closure=None)\n"
@@ -104,4 +104,4 @@ func_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=777cead7b1f6fad3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ff7b995500d2bee6 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/listobject.c.h b/Objects/clinic/listobject.c.h
index e3d6ffa9f76fdb..54e6060451f3ff 100644
--- a/Objects/clinic/listobject.c.h
+++ b/Objects/clinic/listobject.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(list_insert__doc__,
 "insert($self, index, object, /)\n"
@@ -49,22 +50,22 @@ list_insert(PyListObject *self, PyObject *const *args, Py_ssize_t nargs)
     return return_value;
 }
 
-PyDoc_STRVAR(list_clear__doc__,
+PyDoc_STRVAR(py_list_clear__doc__,
 "clear($self, /)\n"
 "--\n"
 "\n"
 "Remove all items from list.");
 
-#define LIST_CLEAR_METHODDEF    \
-    {"clear", (PyCFunction)list_clear, METH_NOARGS, list_clear__doc__},
+#define PY_LIST_CLEAR_METHODDEF    \
+    {"clear", (PyCFunction)py_list_clear, METH_NOARGS, py_list_clear__doc__},
 
 static PyObject *
-list_clear_impl(PyListObject *self);
+py_list_clear_impl(PyListObject *self);
 
 static PyObject *
-list_clear(PyListObject *self, PyObject *Py_UNUSED(ignored))
+py_list_clear(PyListObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return list_clear_impl(self);
+    return py_list_clear_impl(self);
 }
 
 PyDoc_STRVAR(list_copy__doc__,
@@ -94,14 +95,14 @@ PyDoc_STRVAR(list_append__doc__,
 #define LIST_APPEND_METHODDEF    \
     {"append", (PyCFunction)list_append, METH_O, list_append__doc__},
 
-PyDoc_STRVAR(list_extend__doc__,
+PyDoc_STRVAR(py_list_extend__doc__,
 "extend($self, iterable, /)\n"
 "--\n"
 "\n"
 "Extend list by appending elements from the iterable.");
 
-#define LIST_EXTEND_METHODDEF    \
-    {"extend", (PyCFunction)list_extend, METH_O, list_extend__doc__},
+#define PY_LIST_EXTEND_METHODDEF    \
+    {"extend", (PyCFunction)py_list_extend, METH_O, py_list_extend__doc__},
 
 PyDoc_STRVAR(list_pop__doc__,
 "pop($self, index=-1, /)\n"
@@ -383,4 +384,4 @@ list___reversed__(PyListObject *self, PyObject *Py_UNUSED(ignored))
 {
     return list___reversed___impl(self);
 }
-/*[clinic end generated code: output=2ca109d8acc775bc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f2d7b63119464ff4 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/longobject.c.h b/Objects/clinic/longobject.c.h
index c26ceafbc2be0d..4a3d71c6111af5 100644
--- a/Objects/clinic/longobject.c.h
+++ b/Objects/clinic/longobject.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static PyObject *
 long_new_impl(PyTypeObject *type, PyObject *x, PyObject *obase);
@@ -107,9 +108,6 @@ int___format__(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("__format__", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     format_spec = arg;
     return_value = int___format___impl(self, format_spec);
 
@@ -346,9 +344,6 @@ int_to_bytes(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
             _PyArg_BadArgument("to_bytes", "argument 'byteorder'", "str", args[1]);
             goto exit;
         }
-        if (PyUnicode_READY(args[1]) == -1) {
-            goto exit;
-        }
         byteorder = args[1];
         if (!--noptargs) {
             goto skip_optional_pos;
@@ -444,9 +439,6 @@ int_from_bytes(PyTypeObject *type, PyObject *const *args, Py_ssize_t nargs, PyOb
             _PyArg_BadArgument("from_bytes", "argument 'byteorder'", "str", args[1]);
             goto exit;
         }
-        if (PyUnicode_READY(args[1]) == -1) {
-            goto exit;
-        }
         byteorder = args[1];
         if (!--noptargs) {
             goto skip_optional_pos;
@@ -484,4 +476,4 @@ int_is_integer(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return int_is_integer_impl(self);
 }
-/*[clinic end generated code: output=cfdf35d916158d4f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7e6e57246e55911f input=a9049054013a1b77]*/
diff --git a/Objects/clinic/memoryobject.c.h b/Objects/clinic/memoryobject.c.h
index 25a22341185903..f199434dacb9e8 100644
--- a/Objects/clinic/memoryobject.c.h
+++ b/Objects/clinic/memoryobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(memoryview__doc__,
 "memoryview(object)\n"
@@ -112,7 +112,7 @@ memoryview__from_flags(PyTypeObject *type, PyObject *const *args, Py_ssize_t nar
         goto exit;
     }
     object = args[0];
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -195,9 +195,6 @@ memoryview_cast(PyMemoryViewObject *self, PyObject *const *args, Py_ssize_t narg
         _PyArg_BadArgument("cast", "argument 'format'", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     format = args[0];
     if (!noptargs) {
         goto skip_optional_pos;
@@ -406,7 +403,7 @@ memoryview_hex(PyMemoryViewObject *self, PyObject *const *args, Py_ssize_t nargs
             goto skip_optional_pos;
         }
     }
-    bytes_per_sep = _PyLong_AsInt(args[1]);
+    bytes_per_sep = PyLong_AsInt(args[1]);
     if (bytes_per_sep == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -416,4 +413,4 @@ memoryview_hex(PyMemoryViewObject *self, PyObject *const *args, Py_ssize_t nargs
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=01613814112cedd7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7e76a09106921ba2 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/moduleobject.c.h b/Objects/clinic/moduleobject.c.h
index 861bcea6215950..3c0bbe22d5ebab 100644
--- a/Objects/clinic/moduleobject.c.h
+++ b/Objects/clinic/moduleobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(module___init____doc__,
 "module(name, doc=None)\n"
@@ -63,9 +63,6 @@ module___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         _PyArg_BadArgument("module", "argument 'name'", "str", fastargs[0]);
         goto exit;
     }
-    if (PyUnicode_READY(fastargs[0]) == -1) {
-        goto exit;
-    }
     name = fastargs[0];
     if (!noptargs) {
         goto skip_optional_pos;
@@ -77,4 +74,4 @@ module___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2f897c9e4721f03f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e8a71bfbed774c15 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/odictobject.c.h b/Objects/clinic/odictobject.c.h
index 115a134e3f7f54..5ef5380656905a 100644
--- a/Objects/clinic/odictobject.c.h
+++ b/Objects/clinic/odictobject.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(OrderedDict_fromkeys__doc__,
 "fromkeys($type, /, iterable, value=None)\n"
@@ -332,4 +332,4 @@ OrderedDict_move_to_end(PyODictObject *self, PyObject *const *args, Py_ssize_t n
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=76d85a9162d62ca8 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=eff78d2a3f9379bd input=a9049054013a1b77]*/
diff --git a/Objects/clinic/structseq.c.h b/Objects/clinic/structseq.c.h
index 40ba18a544f4b3..cec49ebccccb24 100644
--- a/Objects/clinic/structseq.c.h
+++ b/Objects/clinic/structseq.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static PyObject *
 structseq_new_impl(PyTypeObject *type, PyObject *arg, PyObject *dict);
@@ -62,4 +62,4 @@ structseq_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=802d5663c7d01024 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5bf39b3f06a34ce4 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/tupleobject.c.h b/Objects/clinic/tupleobject.c.h
index 3de95759a13f21..5d6a2c481a5f2a 100644
--- a/Objects/clinic/tupleobject.c.h
+++ b/Objects/clinic/tupleobject.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(tuple_index__doc__,
 "index($self, value, start=0, stop=sys.maxsize, /)\n"
@@ -118,4 +114,4 @@ tuple___getnewargs__(PyTupleObject *self, PyObject *Py_UNUSED(ignored))
 {
     return tuple___getnewargs___impl(self);
 }
-/*[clinic end generated code: output=48a9e0834b300ac3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a6a9abba5d121f4c input=a9049054013a1b77]*/
diff --git a/Objects/clinic/typeobject.c.h b/Objects/clinic/typeobject.c.h
index dc9746abfbe9ec..1fa153598db213 100644
--- a/Objects/clinic/typeobject.c.h
+++ b/Objects/clinic/typeobject.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_BadArgument()
 
 PyDoc_STRVAR(type___instancecheck____doc__,
 "__instancecheck__($self, instance, /)\n"
@@ -190,7 +186,7 @@ object___reduce_ex__(PyObject *self, PyObject *arg)
     PyObject *return_value = NULL;
     int protocol;
 
-    protocol = _PyLong_AsInt(arg);
+    protocol = PyLong_AsInt(arg);
     if (protocol == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -224,9 +220,6 @@ object___format__(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("__format__", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     format_spec = arg;
     return_value = object___format___impl(self, format_spec);
 
@@ -269,4 +262,4 @@ object___dir__(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return object___dir___impl(self);
 }
-/*[clinic end generated code: output=d2fc52440a89f2fa input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b56c87f9cace1921 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/typevarobject.c.h b/Objects/clinic/typevarobject.c.h
new file mode 100644
index 00000000000000..2bb0a98a2ed64c
--- /dev/null
+++ b/Objects/clinic/typevarobject.c.h
@@ -0,0 +1,594 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
+#endif
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywordsWithVararg()
+
+PyDoc_STRVAR(typevar_new__doc__,
+"typevar(name, *constraints, bound=None, covariant=False,\n"
+"        contravariant=False, infer_variance=False)\n"
+"--\n"
+"\n"
+"Create a TypeVar.");
+
+static PyObject *
+typevar_new_impl(PyTypeObject *type, PyObject *name, PyObject *constraints,
+                 PyObject *bound, int covariant, int contravariant,
+                 int infer_variance);
+
+static PyObject *
+typevar_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 5
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), &_Py_ID(bound), &_Py_ID(covariant), &_Py_ID(contravariant), &_Py_ID(infer_variance), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", "bound", "covariant", "contravariant", "infer_variance", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "typevar",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[6];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
+    PyObject *name;
+    PyObject *constraints = NULL;
+    PyObject *bound = Py_None;
+    int covariant = 0;
+    int contravariant = 0;
+    int infer_variance = 0;
+
+    fastargs = _PyArg_UnpackKeywordsWithVararg(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, 1, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(fastargs[0])) {
+        _PyArg_BadArgument("typevar", "argument 'name'", "str", fastargs[0]);
+        goto exit;
+    }
+    name = fastargs[0];
+    constraints = fastargs[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (fastargs[2]) {
+        bound = fastargs[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (fastargs[3]) {
+        covariant = PyObject_IsTrue(fastargs[3]);
+        if (covariant < 0) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (fastargs[4]) {
+        contravariant = PyObject_IsTrue(fastargs[4]);
+        if (contravariant < 0) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    infer_variance = PyObject_IsTrue(fastargs[5]);
+    if (infer_variance < 0) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    return_value = typevar_new_impl(type, name, constraints, bound, covariant, contravariant, infer_variance);
+
+exit:
+    Py_XDECREF(constraints);
+    return return_value;
+}
+
+PyDoc_STRVAR(typevar_typing_subst__doc__,
+"__typing_subst__($self, arg, /)\n"
+"--\n"
+"\n");
+
+#define TYPEVAR_TYPING_SUBST_METHODDEF    \
+    {"__typing_subst__", (PyCFunction)typevar_typing_subst, METH_O, typevar_typing_subst__doc__},
+
+PyDoc_STRVAR(typevar_reduce__doc__,
+"__reduce__($self, /)\n"
+"--\n"
+"\n");
+
+#define TYPEVAR_REDUCE_METHODDEF    \
+    {"__reduce__", (PyCFunction)typevar_reduce, METH_NOARGS, typevar_reduce__doc__},
+
+static PyObject *
+typevar_reduce_impl(typevarobject *self);
+
+static PyObject *
+typevar_reduce(typevarobject *self, PyObject *Py_UNUSED(ignored))
+{
+    return typevar_reduce_impl(self);
+}
+
+PyDoc_STRVAR(paramspecargs_new__doc__,
+"paramspecargs(origin)\n"
+"--\n"
+"\n"
+"Create a ParamSpecArgs object.");
+
+static PyObject *
+paramspecargs_new_impl(PyTypeObject *type, PyObject *origin);
+
+static PyObject *
+paramspecargs_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(origin), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"origin", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "paramspecargs",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *origin;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    origin = fastargs[0];
+    return_value = paramspecargs_new_impl(type, origin);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(paramspeckwargs_new__doc__,
+"paramspeckwargs(origin)\n"
+"--\n"
+"\n"
+"Create a ParamSpecKwargs object.");
+
+static PyObject *
+paramspeckwargs_new_impl(PyTypeObject *type, PyObject *origin);
+
+static PyObject *
+paramspeckwargs_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(origin), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"origin", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "paramspeckwargs",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *origin;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    origin = fastargs[0];
+    return_value = paramspeckwargs_new_impl(type, origin);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(paramspec_new__doc__,
+"paramspec(name, *, bound=None, covariant=False, contravariant=False,\n"
+"          infer_variance=False)\n"
+"--\n"
+"\n"
+"Create a ParamSpec object.");
+
+static PyObject *
+paramspec_new_impl(PyTypeObject *type, PyObject *name, PyObject *bound,
+                   int covariant, int contravariant, int infer_variance);
+
+static PyObject *
+paramspec_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 5
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), &_Py_ID(bound), &_Py_ID(covariant), &_Py_ID(contravariant), &_Py_ID(infer_variance), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", "bound", "covariant", "contravariant", "infer_variance", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "paramspec",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[5];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
+    PyObject *name;
+    PyObject *bound = Py_None;
+    int covariant = 0;
+    int contravariant = 0;
+    int infer_variance = 0;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(fastargs[0])) {
+        _PyArg_BadArgument("paramspec", "argument 'name'", "str", fastargs[0]);
+        goto exit;
+    }
+    name = fastargs[0];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (fastargs[1]) {
+        bound = fastargs[1];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (fastargs[2]) {
+        covariant = PyObject_IsTrue(fastargs[2]);
+        if (covariant < 0) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    if (fastargs[3]) {
+        contravariant = PyObject_IsTrue(fastargs[3]);
+        if (contravariant < 0) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    infer_variance = PyObject_IsTrue(fastargs[4]);
+    if (infer_variance < 0) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    return_value = paramspec_new_impl(type, name, bound, covariant, contravariant, infer_variance);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(paramspec_typing_subst__doc__,
+"__typing_subst__($self, arg, /)\n"
+"--\n"
+"\n");
+
+#define PARAMSPEC_TYPING_SUBST_METHODDEF    \
+    {"__typing_subst__", (PyCFunction)paramspec_typing_subst, METH_O, paramspec_typing_subst__doc__},
+
+PyDoc_STRVAR(paramspec_typing_prepare_subst__doc__,
+"__typing_prepare_subst__($self, alias, args, /)\n"
+"--\n"
+"\n");
+
+#define PARAMSPEC_TYPING_PREPARE_SUBST_METHODDEF    \
+    {"__typing_prepare_subst__", _PyCFunction_CAST(paramspec_typing_prepare_subst), METH_FASTCALL, paramspec_typing_prepare_subst__doc__},
+
+static PyObject *
+paramspec_typing_prepare_subst_impl(paramspecobject *self, PyObject *alias,
+                                    PyObject *args);
+
+static PyObject *
+paramspec_typing_prepare_subst(paramspecobject *self, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *alias;
+    PyObject *__clinic_args;
+
+    if (!_PyArg_CheckPositional("__typing_prepare_subst__", nargs, 2, 2)) {
+        goto exit;
+    }
+    alias = args[0];
+    __clinic_args = args[1];
+    return_value = paramspec_typing_prepare_subst_impl(self, alias, __clinic_args);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(paramspec_reduce__doc__,
+"__reduce__($self, /)\n"
+"--\n"
+"\n");
+
+#define PARAMSPEC_REDUCE_METHODDEF    \
+    {"__reduce__", (PyCFunction)paramspec_reduce, METH_NOARGS, paramspec_reduce__doc__},
+
+static PyObject *
+paramspec_reduce_impl(paramspecobject *self);
+
+static PyObject *
+paramspec_reduce(paramspecobject *self, PyObject *Py_UNUSED(ignored))
+{
+    return paramspec_reduce_impl(self);
+}
+
+PyDoc_STRVAR(typevartuple__doc__,
+"typevartuple(name)\n"
+"--\n"
+"\n"
+"Create a new TypeVarTuple with the given name.");
+
+static PyObject *
+typevartuple_impl(PyTypeObject *type, PyObject *name);
+
+static PyObject *
+typevartuple(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "typevartuple",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *name;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(fastargs[0])) {
+        _PyArg_BadArgument("typevartuple", "argument 'name'", "str", fastargs[0]);
+        goto exit;
+    }
+    name = fastargs[0];
+    return_value = typevartuple_impl(type, name);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(typevartuple_typing_subst__doc__,
+"__typing_subst__($self, arg, /)\n"
+"--\n"
+"\n");
+
+#define TYPEVARTUPLE_TYPING_SUBST_METHODDEF    \
+    {"__typing_subst__", (PyCFunction)typevartuple_typing_subst, METH_O, typevartuple_typing_subst__doc__},
+
+PyDoc_STRVAR(typevartuple_typing_prepare_subst__doc__,
+"__typing_prepare_subst__($self, alias, args, /)\n"
+"--\n"
+"\n");
+
+#define TYPEVARTUPLE_TYPING_PREPARE_SUBST_METHODDEF    \
+    {"__typing_prepare_subst__", _PyCFunction_CAST(typevartuple_typing_prepare_subst), METH_FASTCALL, typevartuple_typing_prepare_subst__doc__},
+
+static PyObject *
+typevartuple_typing_prepare_subst_impl(typevartupleobject *self,
+                                       PyObject *alias, PyObject *args);
+
+static PyObject *
+typevartuple_typing_prepare_subst(typevartupleobject *self, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *alias;
+    PyObject *__clinic_args;
+
+    if (!_PyArg_CheckPositional("__typing_prepare_subst__", nargs, 2, 2)) {
+        goto exit;
+    }
+    alias = args[0];
+    __clinic_args = args[1];
+    return_value = typevartuple_typing_prepare_subst_impl(self, alias, __clinic_args);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(typevartuple_reduce__doc__,
+"__reduce__($self, /)\n"
+"--\n"
+"\n");
+
+#define TYPEVARTUPLE_REDUCE_METHODDEF    \
+    {"__reduce__", (PyCFunction)typevartuple_reduce, METH_NOARGS, typevartuple_reduce__doc__},
+
+static PyObject *
+typevartuple_reduce_impl(typevartupleobject *self);
+
+static PyObject *
+typevartuple_reduce(typevartupleobject *self, PyObject *Py_UNUSED(ignored))
+{
+    return typevartuple_reduce_impl(self);
+}
+
+PyDoc_STRVAR(typealias_reduce__doc__,
+"__reduce__($self, /)\n"
+"--\n"
+"\n");
+
+#define TYPEALIAS_REDUCE_METHODDEF    \
+    {"__reduce__", (PyCFunction)typealias_reduce, METH_NOARGS, typealias_reduce__doc__},
+
+static PyObject *
+typealias_reduce_impl(typealiasobject *self);
+
+static PyObject *
+typealias_reduce(typealiasobject *self, PyObject *Py_UNUSED(ignored))
+{
+    return typealias_reduce_impl(self);
+}
+
+PyDoc_STRVAR(typealias_new__doc__,
+"typealias(name, value, *, type_params=<unrepresentable>)\n"
+"--\n"
+"\n"
+"Create a TypeAliasType.");
+
+static PyObject *
+typealias_new_impl(PyTypeObject *type, PyObject *name, PyObject *value,
+                   PyObject *type_params);
+
+static PyObject *
+typealias_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), &_Py_ID(value), &_Py_ID(type_params), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", "value", "type_params", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "typealias",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
+    PyObject *name;
+    PyObject *value;
+    PyObject *type_params = NULL;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 2, 2, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(fastargs[0])) {
+        _PyArg_BadArgument("typealias", "argument 'name'", "str", fastargs[0]);
+        goto exit;
+    }
+    name = fastargs[0];
+    value = fastargs[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    type_params = fastargs[2];
+skip_optional_kwonly:
+    return_value = typealias_new_impl(type, name, value, type_params);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=5a582d9d89ad787b input=a9049054013a1b77]*/
diff --git a/Objects/clinic/unicodeobject.c.h b/Objects/clinic/unicodeobject.c.h
index f640c997577363..7711434f17c2bc 100644
--- a/Objects/clinic/unicodeobject.c.h
+++ b/Objects/clinic/unicodeobject.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(EncodingMap_size__doc__,
 "size($self, /)\n"
@@ -289,7 +290,7 @@ unicode_expandtabs(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    tabsize = _PyLong_AsInt(args[0]);
+    tabsize = PyLong_AsInt(args[0]);
     if (tabsize == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -736,7 +737,7 @@ unicode_rstrip(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
 }
 
 PyDoc_STRVAR(unicode_replace__doc__,
-"replace($self, old, new, count=-1, /)\n"
+"replace($self, old, new, /, count=-1)\n"
 "--\n"
 "\n"
 "Return a copy with all occurrences of substring old replaced by new.\n"
@@ -749,41 +750,63 @@ PyDoc_STRVAR(unicode_replace__doc__,
 "replaced.");
 
 #define UNICODE_REPLACE_METHODDEF    \
-    {"replace", _PyCFunction_CAST(unicode_replace), METH_FASTCALL, unicode_replace__doc__},
+    {"replace", _PyCFunction_CAST(unicode_replace), METH_FASTCALL|METH_KEYWORDS, unicode_replace__doc__},
 
 static PyObject *
 unicode_replace_impl(PyObject *self, PyObject *old, PyObject *new,
                      Py_ssize_t count);
 
 static PyObject *
-unicode_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
+unicode_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(count), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"", "", "count", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "replace",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *old;
     PyObject *new;
     Py_ssize_t count = -1;
 
-    if (!_PyArg_CheckPositional("replace", nargs, 2, 3)) {
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 3, 0, argsbuf);
+    if (!args) {
         goto exit;
     }
     if (!PyUnicode_Check(args[0])) {
         _PyArg_BadArgument("replace", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     old = args[0];
     if (!PyUnicode_Check(args[1])) {
         _PyArg_BadArgument("replace", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     new = args[1];
-    if (nargs < 3) {
-        goto skip_optional;
+    if (!noptargs) {
+        goto skip_optional_pos;
     }
     {
         Py_ssize_t ival = -1;
@@ -797,7 +820,7 @@ unicode_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         }
         count = ival;
     }
-skip_optional:
+skip_optional_pos:
     return_value = unicode_replace_impl(self, old, new, count);
 
 exit:
@@ -829,9 +852,6 @@ unicode_removeprefix(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("removeprefix", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     prefix = arg;
     return_value = unicode_removeprefix_impl(self, prefix);
 
@@ -865,9 +885,6 @@ unicode_removesuffix(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("removesuffix", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     suffix = arg;
     return_value = unicode_removesuffix_impl(self, suffix);
 
@@ -934,7 +951,7 @@ PyDoc_STRVAR(unicode_split__doc__,
 "    The separator used to split the string.\n"
 "\n"
 "    When set to None (the default value), will split on any whitespace\n"
-"    character (including \\\\n \\\\r \\\\t \\\\f and spaces) and will discard\n"
+"    character (including \\n \\r \\t \\f and spaces) and will discard\n"
 "    empty strings from the result.\n"
 "  maxsplit\n"
 "    Maximum number of splits (starting from the left).\n"
@@ -1058,7 +1075,7 @@ PyDoc_STRVAR(unicode_rsplit__doc__,
 "    The separator used to split the string.\n"
 "\n"
 "    When set to None (the default value), will split on any whitespace\n"
-"    character (including \\\\n \\\\r \\\\t \\\\f and spaces) and will discard\n"
+"    character (including \\n \\r \\t \\f and spaces) and will discard\n"
 "    empty strings from the result.\n"
 "  maxsplit\n"
 "    Maximum number of splits (starting from the left).\n"
@@ -1261,9 +1278,6 @@ unicode_maketrans(void *null, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("maketrans", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     y = args[1];
     if (nargs < 3) {
         goto skip_optional;
@@ -1272,9 +1286,6 @@ unicode_maketrans(void *null, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("maketrans", "argument 3", "str", args[2]);
         goto exit;
     }
-    if (PyUnicode_READY(args[2]) == -1) {
-        goto exit;
-    }
     z = args[2];
 skip_optional:
     return_value = unicode_maketrans_impl(x, y, z);
@@ -1378,9 +1389,6 @@ unicode___format__(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("__format__", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     format_spec = arg;
     return_value = unicode___format___impl(self, format_spec);
 
@@ -1497,4 +1505,4 @@ unicode_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=05d942840635dadf input=a9049054013a1b77]*/
+/*[clinic end generated code: output=873d8b3d09af3095 input=a9049054013a1b77]*/
diff --git a/Objects/codeobject.c b/Objects/codeobject.c
index 9b54c610581174..dc46b773c26528 100644
--- a/Objects/codeobject.c
+++ b/Objects/codeobject.c
@@ -2,17 +2,17 @@
 
 #include "Python.h"
 #include "opcode.h"
-#include "structmember.h"         // PyMemberDef
+
 #include "pycore_code.h"          // _PyCodeConstructor
 #include "pycore_frame.h"         // FRAME_SPECIALS_SIZE
 #include "pycore_interp.h"        // PyInterpreterState.co_extra_freefuncs
-#include "pycore_opcode.h"        // _PyOpcode_Deopt
+#include "pycore_opcode_metadata.h" // _PyOpcode_Deopt, _PyOpcode_Caches
+#include "pycore_opcode_utils.h"  // RESUME_AT_FUNC_START
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
 #include "clinic/codeobject.c.h"
 
-static PyObject* code_repr(PyCodeObject *co);
-
 static const char *
 code_event_name(PyCodeEvent event) {
     switch (event) {
@@ -40,21 +40,9 @@ notify_code_watchers(PyCodeEvent event, PyCodeObject *co)
             // callback must be non-null if the watcher bit is set
             assert(cb != NULL);
             if (cb(event, co) < 0) {
-                // Don't risk resurrecting the object if an unraisablehook keeps
-                // a reference; pass a string as context.
-                PyObject *context = NULL;
-                PyObject *repr = code_repr(co);
-                if (repr) {
-                    context = PyUnicode_FromFormat(
-                        "%s watcher callback for %U",
-                        code_event_name(event), repr);
-                    Py_DECREF(repr);
-                }
-                if (context == NULL) {
-                    context = Py_NewRef(Py_None);
-                }
-                PyErr_WriteUnraisable(context);
-                Py_DECREF(context);
+                PyErr_FormatUnraisable(
+                    "Exception ignored in %s watcher callback for %R",
+                    code_event_name(event), co);
             }
         }
         i++;
@@ -153,10 +141,6 @@ intern_string_constants(PyObject *tuple, int *modified)
     for (Py_ssize_t i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
         PyObject *v = PyTuple_GET_ITEM(tuple, i);
         if (PyUnicode_CheckExact(v)) {
-            if (PyUnicode_READY(v) == -1) {
-                return -1;
-            }
-
             if (all_name_chars(v)) {
                 PyObject *w = v;
                 PyUnicode_InternInPlace(&v);
@@ -398,6 +382,9 @@ init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
     int nlocals, ncellvars, nfreevars;
     get_localsplus_counts(con->localsplusnames, con->localspluskinds,
                           &nlocals, &ncellvars, &nfreevars);
+    if (con->stacksize == 0) {
+        con->stacksize = 1;
+    }
 
     co->co_filename = Py_NewRef(con->filename);
     co->co_name = Py_NewRef(con->name);
@@ -427,9 +414,10 @@ init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
     co->co_framesize = nlocalsplus + con->stacksize + FRAME_SPECIALS_SIZE;
     co->co_ncellvars = ncellvars;
     co->co_nfreevars = nfreevars;
-    co->co_version = _Py_next_func_version;
-    if (_Py_next_func_version != 0) {
-        _Py_next_func_version++;
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    co->co_version = interp->next_func_version;
+    if (interp->next_func_version != 0) {
+        interp->next_func_version++;
     }
     co->_co_monitoring = NULL;
     co->_co_instrumentation_version = 0;
@@ -437,6 +425,7 @@ init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
     co->co_weakreflist = NULL;
     co->co_extra = NULL;
     co->_co_cached = NULL;
+    co->co_executors = NULL;
 
     memcpy(_PyCode_CODE(co), PyBytes_AS_STRING(con->code),
            PyBytes_GET_SIZE(con->code));
@@ -546,17 +535,6 @@ remove_column_info(PyObject *locations)
 PyCodeObject *
 _PyCode_New(struct _PyCodeConstructor *con)
 {
-    /* Ensure that strings are ready Unicode string */
-    if (PyUnicode_READY(con->name) < 0) {
-        return NULL;
-    }
-    if (PyUnicode_READY(con->qualname) < 0) {
-        return NULL;
-    }
-    if (PyUnicode_READY(con->filename) < 0) {
-        return NULL;
-    }
-
     if (intern_strings(con->names) < 0) {
         return NULL;
     }
@@ -665,6 +643,35 @@ PyUnstable_Code_NewWithPosOnlyArgs(
         _Py_set_localsplus_info(offset, name, CO_FAST_FREE,
                                localsplusnames, localspluskinds);
     }
+
+    // gh-110543: Make sure the CO_FAST_HIDDEN flag is set correctly.
+    if (!(flags & CO_OPTIMIZED)) {
+        Py_ssize_t code_len = PyBytes_GET_SIZE(code);
+        _Py_CODEUNIT *code_data = (_Py_CODEUNIT *)PyBytes_AS_STRING(code);
+        Py_ssize_t num_code_units = code_len / sizeof(_Py_CODEUNIT);
+        int extended_arg = 0;
+        for (int i = 0; i < num_code_units; i += 1 + _PyOpcode_Caches[code_data[i].op.code]) {
+            _Py_CODEUNIT *instr = &code_data[i];
+            uint8_t opcode = instr->op.code;
+            if (opcode == EXTENDED_ARG) {
+                extended_arg = extended_arg << 8 | instr->op.arg;
+                continue;
+            }
+            if (opcode == LOAD_FAST_AND_CLEAR) {
+                int oparg = extended_arg << 8 | instr->op.arg;
+                if (oparg >= nlocalsplus) {
+                    PyErr_Format(PyExc_ValueError,
+                                "code: LOAD_FAST_AND_CLEAR oparg %d out of range",
+                                oparg);
+                    goto error;
+                }
+                _PyLocals_Kind kind = _PyLocals_GetKind(localspluskinds, oparg);
+                _PyLocals_SetKind(localspluskinds, oparg, kind | CO_FAST_HIDDEN);
+            }
+            extended_arg = 0;
+        }
+    }
+
     // If any cells were args then nlocalsplus will have shrunk.
     if (nlocalsplus != PyTuple_GET_SIZE(localsplusnames)) {
         if (_PyTuple_Resize(&localsplusnames, nlocalsplus) < 0
@@ -742,7 +749,7 @@ PyUnstable_Code_New(int argcount, int kwonlyargcount,
 // test.test_code.CodeLocationTest.test_code_new_empty to keep it in sync!
 
 static const uint8_t assert0[6] = {
-    RESUME, 0,
+    RESUME, RESUME_AT_FUNC_START,
     LOAD_ASSERTION_ERROR, 0,
     RAISE_VARARGS, 1
 };
@@ -1479,12 +1486,45 @@ PyCode_GetFreevars(PyCodeObject *code)
     return _PyCode_GetFreevars(code);
 }
 
+static void
+clear_executors(PyCodeObject *co)
+{
+    for (int i = 0; i < co->co_executors->size; i++) {
+        Py_CLEAR(co->co_executors->executors[i]);
+    }
+    PyMem_Free(co->co_executors);
+    co->co_executors = NULL;
+}
+
+void
+_PyCode_Clear_Executors(PyCodeObject *code) {
+    int code_len = (int)Py_SIZE(code);
+    for (int i = 0; i < code_len; i += _PyInstruction_GetLength(code, i)) {
+        _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
+        uint8_t opcode = instr->op.code;
+        uint8_t oparg = instr->op.arg;
+        if (opcode == ENTER_EXECUTOR) {
+            _PyExecutorObject *exec = code->co_executors->executors[oparg];
+            assert(exec->vm_data.opcode != ENTER_EXECUTOR);
+            instr->op.code = exec->vm_data.opcode;
+            instr->op.arg = exec->vm_data.oparg;
+        }
+    }
+    clear_executors(code);
+}
+
 static void
 deopt_code(PyCodeObject *code, _Py_CODEUNIT *instructions)
 {
     Py_ssize_t len = Py_SIZE(code);
     for (int i = 0; i < len; i++) {
         int opcode = _Py_GetBaseOpcode(code, i);
+        if (opcode == ENTER_EXECUTOR) {
+            _PyExecutorObject *exec = code->co_executors->executors[instructions[i].op.arg];
+            opcode = _PyOpcode_Deopt[exec->vm_data.opcode];
+            instructions[i].op.arg = exec->vm_data.oparg;
+        }
+        assert(opcode != ENTER_EXECUTOR);
         int caches = _PyOpcode_Caches[opcode];
         instructions[i].op.code = opcode;
         for (int j = 1; j <= caches; j++) {
@@ -1692,6 +1732,9 @@ code_dealloc(PyCodeObject *co)
 
         PyMem_Free(co_extra);
     }
+    if (co->co_executors != NULL) {
+        clear_executors(co);
+    }
 
     Py_XDECREF(co->co_consts);
     Py_XDECREF(co->co_names);
@@ -1771,13 +1814,31 @@ code_richcompare(PyObject *self, PyObject *other, int op)
     for (int i = 0; i < Py_SIZE(co); i++) {
         _Py_CODEUNIT co_instr = _PyCode_CODE(co)[i];
         _Py_CODEUNIT cp_instr = _PyCode_CODE(cp)[i];
-        co_instr.op.code = _PyOpcode_Deopt[co_instr.op.code];
-        cp_instr.op.code = _PyOpcode_Deopt[cp_instr.op.code];
-        eq = co_instr.cache == cp_instr.cache;
-        if (!eq) {
+        uint8_t co_code = _Py_GetBaseOpcode(co, i);
+        uint8_t co_arg = co_instr.op.arg;
+        uint8_t cp_code = _Py_GetBaseOpcode(cp, i);
+        uint8_t cp_arg = cp_instr.op.arg;
+
+        if (co_code == ENTER_EXECUTOR) {
+            const int exec_index = co_arg;
+            _PyExecutorObject *exec = co->co_executors->executors[exec_index];
+            co_code = _PyOpcode_Deopt[exec->vm_data.opcode];
+            co_arg = exec->vm_data.oparg;
+        }
+        assert(co_code != ENTER_EXECUTOR);
+
+        if (cp_code == ENTER_EXECUTOR) {
+            const int exec_index = cp_arg;
+            _PyExecutorObject *exec = cp->co_executors->executors[exec_index];
+            cp_code = _PyOpcode_Deopt[exec->vm_data.opcode];
+            cp_arg = exec->vm_data.oparg;
+        }
+        assert(cp_code != ENTER_EXECUTOR);
+
+        if (co_code != cp_code || co_arg != cp_arg) {
             goto unequal;
         }
-        i += _PyOpcode_Caches[co_instr.op.code];
+        i += _PyOpcode_Caches[co_code];
     }
 
     /* compare constants */
@@ -1856,10 +1917,22 @@ code_hash(PyCodeObject *co)
     SCRAMBLE_IN(co->co_firstlineno);
     SCRAMBLE_IN(Py_SIZE(co));
     for (int i = 0; i < Py_SIZE(co); i++) {
-        int deop = _Py_GetBaseOpcode(co, i);
-        SCRAMBLE_IN(deop);
-        SCRAMBLE_IN(_PyCode_CODE(co)[i].op.arg);
-        i += _PyOpcode_Caches[deop];
+        _Py_CODEUNIT co_instr = _PyCode_CODE(co)[i];
+        uint8_t co_code = co_instr.op.code;
+        uint8_t co_arg = co_instr.op.arg;
+        if (co_code == ENTER_EXECUTOR) {
+            _PyExecutorObject *exec = co->co_executors->executors[co_arg];
+            assert(exec != NULL);
+            assert(exec->vm_data.opcode != ENTER_EXECUTOR);
+            co_code = _PyOpcode_Deopt[exec->vm_data.opcode];
+            co_arg = exec->vm_data.oparg;
+        }
+        else {
+            co_code = _Py_GetBaseOpcode(co, i);
+        }
+        SCRAMBLE_IN(co_code);
+        SCRAMBLE_IN(co_arg);
+        i += _PyOpcode_Caches[co_code];
     }
     if ((Py_hash_t)uhash == -1) {
         return -2;
@@ -1871,20 +1944,20 @@ code_hash(PyCodeObject *co)
 #define OFF(x) offsetof(PyCodeObject, x)
 
 static PyMemberDef code_memberlist[] = {
-    {"co_argcount",        T_INT,    OFF(co_argcount),        READONLY},
-    {"co_posonlyargcount", T_INT,    OFF(co_posonlyargcount), READONLY},
-    {"co_kwonlyargcount",  T_INT,    OFF(co_kwonlyargcount),  READONLY},
-    {"co_stacksize",       T_INT,    OFF(co_stacksize),       READONLY},
-    {"co_flags",           T_INT,    OFF(co_flags),           READONLY},
-    {"co_nlocals",         T_INT,    OFF(co_nlocals),         READONLY},
-    {"co_consts",          T_OBJECT, OFF(co_consts),          READONLY},
-    {"co_names",           T_OBJECT, OFF(co_names),           READONLY},
-    {"co_filename",        T_OBJECT, OFF(co_filename),        READONLY},
-    {"co_name",            T_OBJECT, OFF(co_name),            READONLY},
-    {"co_qualname",        T_OBJECT, OFF(co_qualname),        READONLY},
-    {"co_firstlineno",     T_INT,    OFF(co_firstlineno),     READONLY},
-    {"co_linetable",       T_OBJECT, OFF(co_linetable),       READONLY},
-    {"co_exceptiontable",  T_OBJECT, OFF(co_exceptiontable),  READONLY},
+    {"co_argcount",        Py_T_INT,     OFF(co_argcount),        Py_READONLY},
+    {"co_posonlyargcount", Py_T_INT,     OFF(co_posonlyargcount), Py_READONLY},
+    {"co_kwonlyargcount",  Py_T_INT,     OFF(co_kwonlyargcount),  Py_READONLY},
+    {"co_stacksize",       Py_T_INT,     OFF(co_stacksize),       Py_READONLY},
+    {"co_flags",           Py_T_INT,     OFF(co_flags),           Py_READONLY},
+    {"co_nlocals",         Py_T_INT,     OFF(co_nlocals),         Py_READONLY},
+    {"co_consts",          _Py_T_OBJECT, OFF(co_consts),          Py_READONLY},
+    {"co_names",           _Py_T_OBJECT, OFF(co_names),           Py_READONLY},
+    {"co_filename",        _Py_T_OBJECT, OFF(co_filename),        Py_READONLY},
+    {"co_name",            _Py_T_OBJECT, OFF(co_name),            Py_READONLY},
+    {"co_qualname",        _Py_T_OBJECT, OFF(co_qualname),        Py_READONLY},
+    {"co_firstlineno",     Py_T_INT,     OFF(co_firstlineno),     Py_READONLY},
+    {"co_linetable",       _Py_T_OBJECT, OFF(co_linetable),       Py_READONLY},
+    {"co_exceptiontable",  _Py_T_OBJECT, OFF(co_exceptiontable),  Py_READONLY},
     {NULL}      /* Sentinel */
 };
 
@@ -1962,27 +2035,28 @@ code_linesiterator(PyCodeObject *code, PyObject *Py_UNUSED(args))
 }
 
 /*[clinic input]
+@text_signature "($self, /, **changes)"
 code.replace
 
     *
-    co_argcount: int(c_default="self->co_argcount") = -1
-    co_posonlyargcount: int(c_default="self->co_posonlyargcount") = -1
-    co_kwonlyargcount: int(c_default="self->co_kwonlyargcount") = -1
-    co_nlocals: int(c_default="self->co_nlocals") = -1
-    co_stacksize: int(c_default="self->co_stacksize") = -1
-    co_flags: int(c_default="self->co_flags") = -1
-    co_firstlineno: int(c_default="self->co_firstlineno") = -1
-    co_code: PyBytesObject(c_default="NULL") = None
-    co_consts: object(subclass_of="&PyTuple_Type", c_default="self->co_consts") = None
-    co_names: object(subclass_of="&PyTuple_Type", c_default="self->co_names") = None
-    co_varnames: object(subclass_of="&PyTuple_Type", c_default="NULL") = None
-    co_freevars: object(subclass_of="&PyTuple_Type", c_default="NULL") = None
-    co_cellvars: object(subclass_of="&PyTuple_Type", c_default="NULL") = None
-    co_filename: unicode(c_default="self->co_filename") = None
-    co_name: unicode(c_default="self->co_name") = None
-    co_qualname: unicode(c_default="self->co_qualname") = None
-    co_linetable: PyBytesObject(c_default="(PyBytesObject *)self->co_linetable") = None
-    co_exceptiontable: PyBytesObject(c_default="(PyBytesObject *)self->co_exceptiontable") = None
+    co_argcount: int(c_default="self->co_argcount") = unchanged
+    co_posonlyargcount: int(c_default="self->co_posonlyargcount") = unchanged
+    co_kwonlyargcount: int(c_default="self->co_kwonlyargcount") = unchanged
+    co_nlocals: int(c_default="self->co_nlocals") = unchanged
+    co_stacksize: int(c_default="self->co_stacksize") = unchanged
+    co_flags: int(c_default="self->co_flags") = unchanged
+    co_firstlineno: int(c_default="self->co_firstlineno") = unchanged
+    co_code: object(subclass_of="&PyBytes_Type", c_default="NULL") = unchanged
+    co_consts: object(subclass_of="&PyTuple_Type", c_default="self->co_consts") = unchanged
+    co_names: object(subclass_of="&PyTuple_Type", c_default="self->co_names") = unchanged
+    co_varnames: object(subclass_of="&PyTuple_Type", c_default="NULL") = unchanged
+    co_freevars: object(subclass_of="&PyTuple_Type", c_default="NULL") = unchanged
+    co_cellvars: object(subclass_of="&PyTuple_Type", c_default="NULL") = unchanged
+    co_filename: unicode(c_default="self->co_filename") = unchanged
+    co_name: unicode(c_default="self->co_name") = unchanged
+    co_qualname: unicode(c_default="self->co_qualname") = unchanged
+    co_linetable: object(subclass_of="&PyBytes_Type", c_default="self->co_linetable") = unchanged
+    co_exceptiontable: object(subclass_of="&PyBytes_Type", c_default="self->co_exceptiontable") = unchanged
 
 Return a copy of the code object with new values for the specified fields.
 [clinic start generated code]*/
@@ -1991,14 +2065,13 @@ static PyObject *
 code_replace_impl(PyCodeObject *self, int co_argcount,
                   int co_posonlyargcount, int co_kwonlyargcount,
                   int co_nlocals, int co_stacksize, int co_flags,
-                  int co_firstlineno, PyBytesObject *co_code,
-                  PyObject *co_consts, PyObject *co_names,
-                  PyObject *co_varnames, PyObject *co_freevars,
-                  PyObject *co_cellvars, PyObject *co_filename,
-                  PyObject *co_name, PyObject *co_qualname,
-                  PyBytesObject *co_linetable,
-                  PyBytesObject *co_exceptiontable)
-/*[clinic end generated code: output=b6cd9988391d5711 input=f6f68e03571f8d7c]*/
+                  int co_firstlineno, PyObject *co_code, PyObject *co_consts,
+                  PyObject *co_names, PyObject *co_varnames,
+                  PyObject *co_freevars, PyObject *co_cellvars,
+                  PyObject *co_filename, PyObject *co_name,
+                  PyObject *co_qualname, PyObject *co_linetable,
+                  PyObject *co_exceptiontable)
+/*[clinic end generated code: output=e75c48a15def18b9 input=18e280e07846c122]*/
 {
 #define CHECK_INT_ARG(ARG) \
         if (ARG < 0) { \
@@ -2023,13 +2096,14 @@ code_replace_impl(PyCodeObject *self, int co_argcount,
         if (code == NULL) {
             return NULL;
         }
-        co_code = (PyBytesObject *)code;
+        co_code = code;
     }
 
     if (PySys_Audit("code.__new__", "OOOiiiiii",
                     co_code, co_filename, co_name, co_argcount,
                     co_posonlyargcount, co_kwonlyargcount, co_nlocals,
                     co_stacksize, co_flags) < 0) {
+        Py_XDECREF(code);
         return NULL;
     }
 
@@ -2061,10 +2135,10 @@ code_replace_impl(PyCodeObject *self, int co_argcount,
 
     co = PyCode_NewWithPosOnlyArgs(
         co_argcount, co_posonlyargcount, co_kwonlyargcount, co_nlocals,
-        co_stacksize, co_flags, (PyObject*)co_code, co_consts, co_names,
+        co_stacksize, co_flags, co_code, co_consts, co_names,
         co_varnames, co_freevars, co_cellvars, co_filename, co_name,
         co_qualname, co_firstlineno,
-        (PyObject*)co_linetable, (PyObject*)co_exceptiontable);
+        co_linetable, co_exceptiontable);
 
 error:
     Py_XDECREF(code);
@@ -2103,6 +2177,7 @@ static struct PyMethodDef code_methods[] = {
     {"co_positions", (PyCFunction)code_positionsiterator, METH_NOARGS},
     CODE_REPLACE_METHODDEF
     CODE__VARNAME_FROM_OPARG_METHODDEF
+    {"__replace__", _PyCFunction_CAST(code_replace), METH_FASTCALL|METH_KEYWORDS},
     {NULL, NULL}                /* sentinel */
 };
 
@@ -2286,6 +2361,9 @@ void
 _PyStaticCode_Fini(PyCodeObject *co)
 {
     deopt_code(co, _PyCode_CODE(co));
+    if (co->co_executors != NULL) {
+        clear_executors(co);
+    }
     PyMem_Free(co->co_extra);
     if (co->_co_cached != NULL) {
         Py_CLEAR(co->_co_cached->_co_code);
@@ -2324,76 +2402,3 @@ _PyStaticCode_Init(PyCodeObject *co)
 }
 
 #define MAX_CODE_UNITS_PER_LOC_ENTRY 8
-
-PyCodeObject *
-_Py_MakeShimCode(const _PyShimCodeDef *codedef)
-{
-    PyObject *name = NULL;
-    PyObject *co_code = NULL;
-    PyObject *lines = NULL;
-    PyCodeObject *codeobj = NULL;
-    uint8_t *loc_table = NULL;
-
-    name = _PyUnicode_FromASCII(codedef->cname, strlen(codedef->cname));
-    if (name == NULL) {
-        goto cleanup;
-    }
-    co_code = PyBytes_FromStringAndSize(
-        (const char *)codedef->code, codedef->codelen);
-    if (co_code == NULL) {
-        goto cleanup;
-    }
-    int code_units = codedef->codelen / sizeof(_Py_CODEUNIT);
-    int loc_entries = (code_units + MAX_CODE_UNITS_PER_LOC_ENTRY - 1) /
-                      MAX_CODE_UNITS_PER_LOC_ENTRY;
-    loc_table = PyMem_Malloc(loc_entries);
-    if (loc_table == NULL) {
-        PyErr_NoMemory();
-        goto cleanup;
-    }
-    for (int i = 0; i < loc_entries-1; i++) {
-         loc_table[i] = 0x80 | (PY_CODE_LOCATION_INFO_NONE << 3) | 7;
-         code_units -= MAX_CODE_UNITS_PER_LOC_ENTRY;
-    }
-    assert(loc_entries > 0);
-    assert(code_units > 0 && code_units <= MAX_CODE_UNITS_PER_LOC_ENTRY);
-    loc_table[loc_entries-1] = 0x80 |
-        (PY_CODE_LOCATION_INFO_NONE << 3) | (code_units-1);
-    lines = PyBytes_FromStringAndSize((const char *)loc_table, loc_entries);
-    PyMem_Free(loc_table);
-    if (lines == NULL) {
-        goto cleanup;
-    }
-    _Py_DECLARE_STR(shim_name, "<shim>");
-    struct _PyCodeConstructor con = {
-        .filename = &_Py_STR(shim_name),
-        .name = name,
-        .qualname = name,
-        .flags = CO_NEWLOCALS | CO_OPTIMIZED,
-
-        .code = co_code,
-        .firstlineno = 1,
-        .linetable = lines,
-
-        .consts = (PyObject *)&_Py_SINGLETON(tuple_empty),
-        .names = (PyObject *)&_Py_SINGLETON(tuple_empty),
-
-        .localsplusnames = (PyObject *)&_Py_SINGLETON(tuple_empty),
-        .localspluskinds = (PyObject *)&_Py_SINGLETON(bytes_empty),
-
-        .argcount = 0,
-        .posonlyargcount = 0,
-        .kwonlyargcount = 0,
-
-        .stacksize = codedef->stacksize,
-
-        .exceptiontable = (PyObject *)&_Py_SINGLETON(bytes_empty),
-    };
-
-    codeobj = _PyCode_New(&con);
-cleanup:
-    Py_XDECREF(name);
-    Py_XDECREF(co_code);
-    Py_XDECREF(lines);
-    return codeobj;
-}
diff --git a/Objects/complexobject.c b/Objects/complexobject.c
index aee03ddfb07aec..0e96f54584677c 100644
--- a/Objects/complexobject.c
+++ b/Objects/complexobject.c
@@ -7,10 +7,11 @@
 
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_complexobject.h" // _PyComplex_FormatAdvancedWriter()
 #include "pycore_long.h"          // _PyLong_GetZero()
 #include "pycore_object.h"        // _PyObject_Init()
 #include "pycore_pymath.h"        // _Py_ADJUST_ERANGE2()
-#include "structmember.h"         // PyMemberDef
+
 
 
 /*[clinic input]
@@ -719,9 +720,9 @@ static PyMethodDef complex_methods[] = {
 };
 
 static PyMemberDef complex_members[] = {
-    {"real", T_DOUBLE, offsetof(PyComplexObject, cval.real), READONLY,
+    {"real", Py_T_DOUBLE, offsetof(PyComplexObject, cval.real), Py_READONLY,
      "the real part of a complex number"},
-    {"imag", T_DOUBLE, offsetof(PyComplexObject, cval.imag), READONLY,
+    {"imag", Py_T_DOUBLE, offsetof(PyComplexObject, cval.imag), Py_READONLY,
      "the imaginary part of a complex number"},
     {0},
 };
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index 17c0c85a06c4b8..57921b110591e5 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -1,12 +1,16 @@
 /* Descriptors -- a new, flexible way to describe attributes */
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyObject_RealIsSubclass()
+#include "pycore_call.h"          // _PyStack_AsDict()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCallTstate()
+#include "pycore_emscripten_trampoline.h" // descr_set_trampoline_call(), descr_get_trampoline_call()
+#include "pycore_descrobject.h"   // _PyMethodWrapper_Type
+#include "pycore_modsupport.h"    // _PyArg_UnpackStack()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
-#include "structmember.h"         // PyMemberDef
-#include "pycore_descrobject.h"
+
 
 /*[clinic input]
 class mappingproxy "mappingproxyobject *" "&PyDictProxy_Type"
@@ -14,25 +18,6 @@ class property "propertyobject *" "&PyProperty_Type"
 [clinic start generated code]*/
 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=556352653fd4c02e]*/
 
-// see pycore_object.h
-#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
-#include <emscripten.h>
-EM_JS(int, descr_set_trampoline_call, (setter set, PyObject *obj, PyObject *value, void *closure), {
-    return wasmTable.get(set)(obj, value, closure);
-});
-
-EM_JS(PyObject*, descr_get_trampoline_call, (getter get, PyObject *obj, void *closure), {
-    return wasmTable.get(get)(obj, closure);
-});
-#else
-#define descr_set_trampoline_call(set, obj, value, closure) \
-    (set)((obj), (value), (closure))
-
-#define descr_get_trampoline_call(get, obj, closure) \
-    (get)((obj), (closure))
-
-#endif // __EMSCRIPTEN__ && PY_CALL_TRAMPOLINE
-
 static void
 descr_dealloc(PyDescrObject *descr)
 {
@@ -180,7 +165,7 @@ member_get(PyMemberDescrObject *descr, PyObject *obj, PyObject *type)
         return NULL;
     }
 
-    if (descr->d_member->flags & PY_AUDIT_READ) {
+    if (descr->d_member->flags & Py_AUDIT_READ) {
         if (PySys_Audit("object.__getattr__", "Os",
             obj ? obj : Py_None, descr->d_member->name) < 0) {
             return NULL;
@@ -586,7 +571,9 @@ method_get_doc(PyMethodDescrObject *descr, void *closure)
 static PyObject *
 method_get_text_signature(PyMethodDescrObject *descr, void *closure)
 {
-    return _PyType_GetTextSignatureFromInternalDoc(descr->d_method->ml_name, descr->d_method->ml_doc);
+    return _PyType_GetTextSignatureFromInternalDoc(descr->d_method->ml_name,
+                                                   descr->d_method->ml_doc,
+                                                   descr->d_method->ml_flags);
 }
 
 static PyObject *
@@ -638,8 +625,8 @@ static PyMethodDef descr_methods[] = {
 };
 
 static PyMemberDef descr_members[] = {
-    {"__objclass__", T_OBJECT, offsetof(PyDescrObject, d_type), READONLY},
-    {"__name__", T_OBJECT, offsetof(PyDescrObject, d_name), READONLY},
+    {"__objclass__", _Py_T_OBJECT, offsetof(PyDescrObject, d_type), Py_READONLY},
+    {"__name__", _Py_T_OBJECT, offsetof(PyDescrObject, d_name), Py_READONLY},
     {0}
 };
 
@@ -689,7 +676,8 @@ wrapperdescr_get_doc(PyWrapperDescrObject *descr, void *closure)
 static PyObject *
 wrapperdescr_get_text_signature(PyWrapperDescrObject *descr, void *closure)
 {
-    return _PyType_GetTextSignatureFromInternalDoc(descr->d_base->name, descr->d_base->doc);
+    return _PyType_GetTextSignatureFromInternalDoc(descr->d_base->name,
+                                                   descr->d_base->doc, 0);
 }
 
 static PyGetSetDef wrapperdescr_getset[] = {
@@ -1110,9 +1098,9 @@ mappingproxy_get(mappingproxyobject *pp, PyObject *const *args, Py_ssize_t nargs
     {
         return NULL;
     }
-    return _PyObject_VectorcallMethod(&_Py_ID(get), newargs,
-                                        3 | PY_VECTORCALL_ARGUMENTS_OFFSET,
-                                        NULL);
+    return PyObject_VectorcallMethod(&_Py_ID(get), newargs,
+                                     3 | PY_VECTORCALL_ARGUMENTS_OFFSET,
+                                     NULL);
 }
 
 static PyObject *
@@ -1353,7 +1341,7 @@ static PyMethodDef wrapper_methods[] = {
 };
 
 static PyMemberDef wrapper_members[] = {
-    {"__self__", T_OBJECT, offsetof(wrapperobject, self), READONLY},
+    {"__self__", _Py_T_OBJECT, offsetof(wrapperobject, self), Py_READONLY},
     {0}
 };
 
@@ -1382,7 +1370,8 @@ wrapper_doc(wrapperobject *wp, void *Py_UNUSED(ignored))
 static PyObject *
 wrapper_text_signature(wrapperobject *wp, void *Py_UNUSED(ignored))
 {
-    return _PyType_GetTextSignatureFromInternalDoc(wp->descr->d_base->name, wp->descr->d_base->doc);
+    return _PyType_GetTextSignatureFromInternalDoc(wp->descr->d_base->name,
+                                                   wp->descr->d_base->doc, 0);
 }
 
 static PyObject *
@@ -1485,7 +1474,10 @@ class property(object):
         self.__get = fget
         self.__set = fset
         self.__del = fdel
-        self.__doc__ = doc
+        try:
+            self.__doc__ = doc
+        except AttributeError:  # read-only or dict-less class
+            pass
 
     def __get__(self, inst, type=None):
         if inst is None:
@@ -1510,10 +1502,10 @@ static PyObject * property_copy(PyObject *, PyObject *, PyObject *,
                                   PyObject *);
 
 static PyMemberDef property_members[] = {
-    {"fget", T_OBJECT, offsetof(propertyobject, prop_get), READONLY},
-    {"fset", T_OBJECT, offsetof(propertyobject, prop_set), READONLY},
-    {"fdel", T_OBJECT, offsetof(propertyobject, prop_del), READONLY},
-    {"__doc__",  T_OBJECT, offsetof(propertyobject, prop_doc), 0},
+    {"fget", _Py_T_OBJECT, offsetof(propertyobject, prop_get), Py_READONLY},
+    {"fset", _Py_T_OBJECT, offsetof(propertyobject, prop_set), Py_READONLY},
+    {"fdel", _Py_T_OBJECT, offsetof(propertyobject, prop_del), Py_READONLY},
+    {"__doc__",  _Py_T_OBJECT, offsetof(propertyobject, prop_doc), 0},
     {0}
 };
 
@@ -1549,6 +1541,9 @@ property_deleter(PyObject *self, PyObject *deleter)
 
 
 PyDoc_STRVAR(set_name_doc,
+             "__set_name__($self, owner, name, /)\n"
+             "--\n"
+             "\n"
              "Method to set name of a property.");
 
 static PyObject *
@@ -1787,10 +1782,23 @@ property_init_impl(propertyobject *self, PyObject *fget, PyObject *fset,
     }
     /* if no docstring given and the getter has one, use that one */
     else if (fget != NULL) {
-        int rc = _PyObject_LookupAttr(fget, &_Py_ID(__doc__), &prop_doc);
+        int rc = PyObject_GetOptionalAttr(fget, &_Py_ID(__doc__), &prop_doc);
         if (rc <= 0) {
             return rc;
         }
+        if (!Py_IS_TYPE(self, &PyProperty_Type) &&
+            prop_doc != NULL && prop_doc != Py_None) {
+            // This oddity preserves the long existing behavior of surfacing
+            // an AttributeError when using a dict-less (__slots__) property
+            // subclass as a decorator on a getter method with a docstring.
+            // See PropertySubclassTest.test_slots_docstring_copy_exception.
+            int err = PyObject_SetAttr(
+                        (PyObject *)self, &_Py_ID(__doc__), prop_doc);
+            if (err < 0) {
+                Py_DECREF(prop_doc);  // release our new reference.
+                return -1;
+            }
+        }
         if (prop_doc == Py_None) {
             prop_doc = NULL;
             Py_DECREF(Py_None);
@@ -1806,19 +1814,32 @@ property_init_impl(propertyobject *self, PyObject *fget, PyObject *fset,
     if (Py_IS_TYPE(self, &PyProperty_Type)) {
         Py_XSETREF(self->prop_doc, prop_doc);
     } else {
-        /* If this is a property subclass, put __doc__
-           in dict of the subclass instance instead,
-           otherwise it gets shadowed by __doc__ in the
-           class's dict. */
+        /* If this is a property subclass, put __doc__ in the dict
+           or designated slot of the subclass instance instead, otherwise
+           it gets shadowed by __doc__ in the class's dict. */
 
         if (prop_doc == NULL) {
             prop_doc = Py_NewRef(Py_None);
         }
         int err = PyObject_SetAttr(
                     (PyObject *)self, &_Py_ID(__doc__), prop_doc);
-        Py_XDECREF(prop_doc);
-        if (err < 0)
-            return -1;
+        Py_DECREF(prop_doc);
+        if (err < 0) {
+            assert(PyErr_Occurred());
+            if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                PyErr_Clear();
+                // https://github.com/python/cpython/issues/98963#issuecomment-1574413319
+                // Python silently dropped this doc assignment through 3.11.
+                // We preserve that behavior for backwards compatibility.
+                //
+                // If we ever want to deprecate this behavior, only raise a
+                // warning or error when proc_doc is not None so that
+                // property without a specific doc= still works.
+                return 0;
+            } else {
+                return -1;
+            }
+        }
     }
 
     return 0;
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 7436c113f37c4a..70f424e07ece9a 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -115,12 +115,14 @@ As a consequence of this, split keys have a maximum size of 16.
 #include "Python.h"
 #include "pycore_bitutils.h"      // _Py_bit_length
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_code.h"          // stats
-#include "pycore_dict.h"          // PyDictKeysObject
+#include "pycore_dict.h"          // export _PyDict_SizeOf()
 #include "pycore_gc.h"            // _PyObject_GC_IS_TRACKED()
-#include "pycore_object.h"        // _PyObject_GC_TRACK()
+#include "pycore_object.h"        // _PyObject_GC_TRACK(), _PyDebugAllocatorStats()
 #include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "stringlib/eq.h"         // unicode_eq()
 
 #include <stdbool.h>
@@ -944,6 +946,7 @@ unicodekeys_lookup_unicode(PyDictKeysObject* dk, PyObject *key, Py_hash_t hash)
         }
         perturb >>= PERTURB_SHIFT;
         i = mask & (i*5 + perturb + 1);
+        // Manual loop unrolling
         ix = dictkeys_get_index(dk, i);
         if (ix >= 0) {
             PyDictUnicodeEntry *ep = &ep0[ix];
@@ -1660,8 +1663,8 @@ _PyDict_FromItems(PyObject *const *keys, Py_ssize_t keys_offset,
  * function hits a stack-depth error, which can cause this to return NULL
  * even if the key is present.
  */
-PyObject *
-PyDict_GetItem(PyObject *op, PyObject *key)
+static PyObject *
+dict_getitem(PyObject *op, PyObject *key, const char *warnmsg)
 {
     if (!PyDict_Check(op)) {
         return NULL;
@@ -1672,7 +1675,7 @@ PyDict_GetItem(PyObject *op, PyObject *key)
     if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
         hash = PyObject_Hash(key);
         if (hash == -1) {
-            PyErr_Clear();
+            PyErr_FormatUnraisable(warnmsg);
             return NULL;
         }
     }
@@ -1693,11 +1696,22 @@ PyDict_GetItem(PyObject *op, PyObject *key)
     ix = _Py_dict_lookup(mp, key, hash, &value);
 
     /* Ignore any exception raised by the lookup */
+    PyObject *exc2 = _PyErr_Occurred(tstate);
+    if (exc2 && !PyErr_GivenExceptionMatches(exc2, PyExc_KeyError)) {
+        PyErr_FormatUnraisable(warnmsg);
+    }
     _PyErr_SetRaisedException(tstate, exc);
 
-
     assert(ix >= 0 || value == NULL);
-    return value;
+    return value;  // borrowed reference
+}
+
+PyObject *
+PyDict_GetItem(PyObject *op, PyObject *key)
+{
+    return dict_getitem(op, key,
+            "Exception ignored in PyDict_GetItem(); consider using "
+            "PyDict_GetItemRef() or PyDict_GetItemWithError()");
 }
 
 Py_ssize_t
@@ -1736,9 +1750,46 @@ _PyDict_GetItem_KnownHash(PyObject *op, PyObject *key, Py_hash_t hash)
 
     ix = _Py_dict_lookup(mp, key, hash, &value);
     assert(ix >= 0 || value == NULL);
-    return value;
+    return value;  // borrowed reference
 }
 
+
+int
+PyDict_GetItemRef(PyObject *op, PyObject *key, PyObject **result)
+{
+    if (!PyDict_Check(op)) {
+        PyErr_BadInternalCall();
+        *result = NULL;
+        return -1;
+    }
+    PyDictObject*mp = (PyDictObject *)op;
+
+    Py_hash_t hash;
+    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1)
+    {
+        hash = PyObject_Hash(key);
+        if (hash == -1) {
+            *result = NULL;
+            return -1;
+        }
+    }
+
+    PyObject *value;
+    Py_ssize_t ix = _Py_dict_lookup(mp, key, hash, &value);
+    assert(ix >= 0 || value == NULL);
+    if (ix == DKIX_ERROR) {
+        *result = NULL;
+        return -1;
+    }
+    if (value == NULL) {
+        *result = NULL;
+        return 0;  // missing key
+    }
+    *result = Py_NewRef(value);
+    return 1;  // key is present
+}
+
+
 /* Variant of PyDict_GetItem() that doesn't suppress exceptions.
    This returns NULL *with* an exception set if an exception occurred.
    It returns NULL *without* an exception set if the key wasn't present.
@@ -1765,7 +1816,7 @@ PyDict_GetItemWithError(PyObject *op, PyObject *key)
 
     ix = _Py_dict_lookup(mp, key, hash, &value);
     assert(ix >= 0 || value == NULL);
-    return value;
+    return value;  // borrowed reference
 }
 
 PyObject *
@@ -1776,7 +1827,7 @@ _PyDict_GetItemWithError(PyObject *dp, PyObject *kv)
     if (hash == -1) {
         return NULL;
     }
-    return _PyDict_GetItem_KnownHash(dp, kv, hash);
+    return _PyDict_GetItem_KnownHash(dp, kv, hash);  // borrowed reference
 }
 
 PyObject *
@@ -1788,7 +1839,7 @@ _PyDict_GetItemIdWithError(PyObject *dp, _Py_Identifier *key)
         return NULL;
     Py_hash_t hash = unicode_get_hash(kv);
     assert (hash != -1);  /* interned strings have their hash value initialised */
-    return _PyDict_GetItem_KnownHash(dp, kv, hash);
+    return _PyDict_GetItem_KnownHash(dp, kv, hash);  // borrowed reference
 }
 
 PyObject *
@@ -1804,6 +1855,7 @@ _PyDict_GetItemStringWithError(PyObject *v, const char *key)
     return rv;
 }
 
+
 /* Fast version of global value lookup (LOAD_GLOBAL).
  * Lookup in globals, then builtins.
  *
@@ -2188,64 +2240,119 @@ PyDict_Next(PyObject *op, Py_ssize_t *ppos, PyObject **pkey, PyObject **pvalue)
     return _PyDict_Next(op, ppos, pkey, pvalue, NULL);
 }
 
+
 /* Internal version of dict.pop(). */
-PyObject *
-_PyDict_Pop_KnownHash(PyObject *dict, PyObject *key, Py_hash_t hash, PyObject *deflt)
+int
+_PyDict_Pop_KnownHash(PyDictObject *mp, PyObject *key, Py_hash_t hash,
+                      PyObject **result)
 {
-    Py_ssize_t ix;
-    PyObject *old_value;
-    PyDictObject *mp;
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-
-    assert(PyDict_Check(dict));
-    mp = (PyDictObject *)dict;
+    assert(PyDict_Check(mp));
 
     if (mp->ma_used == 0) {
-        if (deflt) {
-            return Py_NewRef(deflt);
+        if (result) {
+            *result = NULL;
         }
-        _PyErr_SetKeyError(key);
-        return NULL;
+        return 0;
     }
-    ix = _Py_dict_lookup(mp, key, hash, &old_value);
-    if (ix == DKIX_ERROR)
-        return NULL;
+
+    PyObject *old_value;
+    Py_ssize_t ix = _Py_dict_lookup(mp, key, hash, &old_value);
+    if (ix == DKIX_ERROR) {
+        if (result) {
+            *result = NULL;
+        }
+        return -1;
+    }
+
     if (ix == DKIX_EMPTY || old_value == NULL) {
-        if (deflt) {
-            return Py_NewRef(deflt);
+        if (result) {
+            *result = NULL;
         }
-        _PyErr_SetKeyError(key);
-        return NULL;
+        return 0;
     }
+
     assert(old_value != NULL);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     uint64_t new_version = _PyDict_NotifyEvent(
             interp, PyDict_EVENT_DELETED, mp, key, NULL);
     delitem_common(mp, hash, ix, Py_NewRef(old_value), new_version);
 
     ASSERT_CONSISTENT(mp);
-    return old_value;
+    if (result) {
+        *result = old_value;
+    }
+    else {
+        Py_DECREF(old_value);
+    }
+    return 1;
 }
 
-PyObject *
-_PyDict_Pop(PyObject *dict, PyObject *key, PyObject *deflt)
+
+int
+PyDict_Pop(PyObject *op, PyObject *key, PyObject **result)
 {
-    Py_hash_t hash;
+    if (!PyDict_Check(op)) {
+        if (result) {
+            *result = NULL;
+        }
+        PyErr_BadInternalCall();
+        return -1;
+    }
+    PyDictObject *dict = (PyDictObject *)op;
 
-    if (((PyDictObject *)dict)->ma_used == 0) {
-        if (deflt) {
-            return Py_NewRef(deflt);
+    if (dict->ma_used == 0) {
+        if (result) {
+            *result = NULL;
         }
-        _PyErr_SetKeyError(key);
-        return NULL;
+        return 0;
     }
+
+    Py_hash_t hash;
     if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
         hash = PyObject_Hash(key);
-        if (hash == -1)
-            return NULL;
+        if (hash == -1) {
+            if (result) {
+                *result = NULL;
+            }
+            return -1;
+        }
+    }
+    return _PyDict_Pop_KnownHash(dict, key, hash, result);
+}
+
+
+int
+PyDict_PopString(PyObject *op, const char *key, PyObject **result)
+{
+    PyObject *key_obj = PyUnicode_FromString(key);
+    if (key_obj == NULL) {
+        if (result != NULL) {
+            *result = NULL;
+        }
+        return -1;
     }
-    return _PyDict_Pop_KnownHash(dict, key, hash, deflt);
+
+    int res = PyDict_Pop(op, key_obj, result);
+    Py_DECREF(key_obj);
+    return res;
 }
 
+
+PyObject *
+_PyDict_Pop(PyObject *dict, PyObject *key, PyObject *default_value)
+{
+    PyObject *result;
+    if (PyDict_Pop(dict, key, &result) == 0) {
+        if (default_value != NULL) {
+            return Py_NewRef(default_value);
+        }
+        _PyErr_SetKeyError(key);
+        return NULL;
+    }
+    return result;
+}
+
+
 /* Internal version of dict.from_keys().  It is subclass-friendly. */
 PyObject *
 _PyDict_FromKeys(PyObject *cls, PyObject *iterable, PyObject *value)
@@ -2662,12 +2769,11 @@ dict_update_arg(PyObject *self, PyObject *arg)
     if (PyDict_CheckExact(arg)) {
         return PyDict_Merge(self, arg, 1);
     }
-    PyObject *func;
-    if (_PyObject_LookupAttr(arg, &_Py_ID(keys), &func) < 0) {
+    int has_keys = PyObject_HasAttrWithError(arg, &_Py_ID(keys));
+    if (has_keys < 0) {
         return -1;
     }
-    if (func != NULL) {
-        Py_DECREF(func);
+    if (has_keys) {
         return PyDict_Merge(self, arg, 1);
     }
     return PyDict_MergeFromSeq2(self, arg, 1);
@@ -3703,6 +3809,18 @@ PyDict_Contains(PyObject *op, PyObject *key)
     return (ix != DKIX_EMPTY && value != NULL);
 }
 
+int
+PyDict_ContainsString(PyObject *op, const char *key)
+{
+    PyObject *key_obj = PyUnicode_FromString(key);
+    if (key_obj == NULL) {
+        return -1;
+    }
+    int res = PyDict_Contains(op, key_obj);
+    Py_DECREF(key_obj);
+    return res;
+}
+
 /* Internal version of PyDict_Contains used when the hash value is already known */
 int
 _PyDict_Contains_KnownHash(PyObject *op, PyObject *key, Py_hash_t hash)
@@ -3888,12 +4006,29 @@ PyDict_GetItemString(PyObject *v, const char *key)
     PyObject *kv, *rv;
     kv = PyUnicode_FromString(key);
     if (kv == NULL) {
-        PyErr_Clear();
+        PyErr_FormatUnraisable(
+            "Exception ignored in PyDict_GetItemString(); consider using "
+            "PyDict_GetItemRefString()");
         return NULL;
     }
-    rv = PyDict_GetItem(v, kv);
+    rv = dict_getitem(v, kv,
+            "Exception ignored in PyDict_GetItemString(); consider using "
+            "PyDict_GetItemRefString()");
     Py_DECREF(kv);
-    return rv;
+    return rv;  // borrowed reference
+}
+
+int
+PyDict_GetItemStringRef(PyObject *v, const char *key, PyObject **result)
+{
+    PyObject *key_obj = PyUnicode_FromString(key);
+    if (key_obj == NULL) {
+        *result = NULL;
+        return -1;
+    }
+    int res = PyDict_GetItemRef(v, key_obj, result);
+    Py_DECREF(key_obj);
+    return res;
 }
 
 int
@@ -4592,7 +4727,7 @@ dictview_mapping(PyObject *view, void *Py_UNUSED(ignored)) {
 
 static PyGetSetDef dictview_getset[] = {
     {"mapping", dictview_mapping, (setter)NULL,
-     "dictionary that this view refers to", NULL},
+     PyDoc_STR("dictionary that this view refers to"), NULL},
     {0}
 };
 
@@ -5145,15 +5280,11 @@ dictitems_contains(_PyDictViewObject *dv, PyObject *obj)
         return 0;
     key = PyTuple_GET_ITEM(obj, 0);
     value = PyTuple_GET_ITEM(obj, 1);
-    found = PyDict_GetItemWithError((PyObject *)dv->dv_dict, key);
-    if (found == NULL) {
-        if (PyErr_Occurred())
-            return -1;
-        return 0;
+    result = PyDict_GetItemRef((PyObject *)dv->dv_dict, key, &found);
+    if (result == 1) {
+        result = PyObject_RichCompareBool(found, value, Py_EQ);
+        Py_DECREF(found);
     }
-    Py_INCREF(found);
-    result = PyObject_RichCompareBool(found, value, Py_EQ);
-    Py_DECREF(found);
     return result;
 }
 
@@ -5333,11 +5464,10 @@ _PyDict_NewKeysForClass(void)
 
 #define CACHED_KEYS(tp) (((PyHeapTypeObject*)tp)->ht_cached_keys)
 
-static int
-init_inline_values(PyObject *obj, PyTypeObject *tp)
+int
+_PyObject_InitInlineValues(PyObject *obj, PyTypeObject *tp)
 {
     assert(tp->tp_flags & Py_TPFLAGS_HEAPTYPE);
-    // assert(type->tp_dictoffset > 0);  -- TO DO Update this assert.
     assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
     PyDictKeysObject *keys = CACHED_KEYS(tp);
     assert(keys != NULL);
@@ -5369,7 +5499,7 @@ _PyObject_InitializeDict(PyObject *obj)
     }
     if (tp->tp_flags & Py_TPFLAGS_MANAGED_DICT) {
         OBJECT_STAT_INC(new_values);
-        return init_inline_values(obj, tp);
+        return _PyObject_InitInlineValues(obj, tp);
     }
     PyObject *dict;
     if (_PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE) && CACHED_KEYS(tp)) {
@@ -5418,6 +5548,37 @@ _PyObject_MakeDictFromInstanceAttributes(PyObject *obj, PyDictValues *values)
     return make_dict_from_instance_attributes(interp, keys, values);
 }
 
+// Return true if the dict was dematerialized, false otherwise.
+bool
+_PyObject_MakeInstanceAttributesFromDict(PyObject *obj, PyDictOrValues *dorv)
+{
+    assert(_PyObject_DictOrValuesPointer(obj) == dorv);
+    assert(!_PyDictOrValues_IsValues(*dorv));
+    PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(*dorv);
+    if (dict == NULL) {
+        return false;
+    }
+    // It's likely that this dict still shares its keys (if it was materialized
+    // on request and not heavily modified):
+    if (!PyDict_CheckExact(dict)) {
+        return false;
+    }
+    assert(_PyType_HasFeature(Py_TYPE(obj), Py_TPFLAGS_HEAPTYPE));
+    if (dict->ma_keys != CACHED_KEYS(Py_TYPE(obj)) || Py_REFCNT(dict) != 1) {
+        return false;
+    }
+    assert(dict->ma_values);
+    // We have an opportunity to do something *really* cool: dematerialize it!
+    _PyDictKeys_DecRef(dict->ma_keys);
+    _PyDictOrValues_SetValues(dorv, dict->ma_values);
+    OBJECT_STAT_INC(dict_dematerialized);
+    // Don't try this at home, kids:
+    dict->ma_keys = NULL;
+    dict->ma_values = NULL;
+    Py_DECREF(dict);
+    return true;
+}
+
 int
 _PyObject_StoreInstanceAttribute(PyObject *obj, PyDictValues *values,
                               PyObject *name, PyObject *value)
@@ -5573,7 +5734,7 @@ _PyObject_FreeInstanceAttributes(PyObject *self)
 }
 
 int
-_PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg)
+PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg)
 {
     PyTypeObject *tp = Py_TYPE(obj);
     if((tp->tp_flags & Py_TPFLAGS_MANAGED_DICT) == 0) {
@@ -5596,7 +5757,7 @@ _PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg)
 }
 
 void
-_PyObject_ClearManagedDict(PyObject *obj)
+PyObject_ClearManagedDict(PyObject *obj)
 {
     PyTypeObject *tp = Py_TYPE(obj);
     if((tp->tp_flags & Py_TPFLAGS_MANAGED_DICT) == 0) {
@@ -5642,6 +5803,7 @@ PyObject_GenericGetDict(PyObject *obj, void *context)
             dict = _PyDictOrValues_GetDict(*dorv_ptr);
             if (dict == NULL) {
                 dictkeys_incref(CACHED_KEYS(tp));
+                OBJECT_STAT_INC(dict_materialized_on_request);
                 dict = new_dict_with_shared_keys(interp, CACHED_KEYS(tp));
                 dorv_ptr->dict = dict;
             }
@@ -5684,6 +5846,7 @@ _PyObjectDict_SetItem(PyTypeObject *tp, PyObject **dictptr,
         assert(dictptr != NULL);
         dict = *dictptr;
         if (dict == NULL) {
+            assert(!_PyType_HasFeature(tp, Py_TPFLAGS_MANAGED_DICT));
             dictkeys_incref(cached);
             dict = new_dict_with_shared_keys(interp, cached);
             if (dict == NULL)
@@ -5834,14 +5997,9 @@ _PyDict_SendEvent(int watcher_bits,
                 // unraisablehook keep a reference to it, so we don't pass the
                 // dict as context, just an informative string message.  Dict
                 // repr can call arbitrary code, so we invent a simpler version.
-                PyObject *context = PyUnicode_FromFormat(
-                    "%s watcher callback for <dict at %p>",
+                PyErr_FormatUnraisable(
+                    "Exception ignored in %s watcher callback for <dict at %p>",
                     dict_event_name(event), mp);
-                if (context == NULL) {
-                    context = Py_NewRef(Py_None);
-                }
-                PyErr_WriteUnraisable(context);
-                Py_DECREF(context);
             }
         }
         watcher_bits >>= 1;
diff --git a/Objects/enumobject.c b/Objects/enumobject.c
index c9d90584c26b7d..556666779d8522 100644
--- a/Objects/enumobject.c
+++ b/Objects/enumobject.c
@@ -3,6 +3,7 @@
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_long.h"          // _PyLong_GetOne()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
 
 #include "clinic/enumobject.c.h"
diff --git a/Objects/exception_handling_notes.txt b/Objects/exception_handling_notes.txt
index 7de01fdbf5ff48..387ef935ce739e 100644
--- a/Objects/exception_handling_notes.txt
+++ b/Objects/exception_handling_notes.txt
@@ -47,7 +47,7 @@ a table to determine where to jump to when an exception is raised.
 
   2           2 NOP
 
-  3           4 LOAD_GLOBAL              1 (NULL + g)
+  3           4 LOAD_GLOBAL              1 (g + NULL)
              16 LOAD_CONST               1 (0)
              18 PRECALL                  1
              22 CALL                     1
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index a8d4e3a696ce8e..a685ed803cd02d 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -4,15 +4,16 @@
  * Thanks go to Tim Peters and Michael Hudson for debugging.
  */
 
-#define PY_SSIZE_T_CLEAN
 #include <Python.h>
 #include <stdbool.h>
+#include "pycore_abstract.h"      // _PyObject_RealIsSubclass()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCall
-#include "pycore_pyerrors.h"      // struct _PyErr_SetRaisedException
 #include "pycore_exceptions.h"    // struct _Py_exc_state
 #include "pycore_initconfig.h"
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 #include "pycore_object.h"
-#include "structmember.h"         // PyMemberDef
+#include "pycore_pyerrors.h"      // struct _PyErr_SetRaisedException
+
 #include "osdefs.h"               // SEP
 
 
@@ -207,22 +208,21 @@ BaseException_add_note(PyObject *self, PyObject *note)
         return NULL;
     }
 
-    if (!PyObject_HasAttr(self, &_Py_ID(__notes__))) {
-        PyObject *new_notes = PyList_New(0);
-        if (new_notes == NULL) {
+    PyObject *notes;
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(__notes__), &notes) < 0) {
+        return NULL;
+    }
+    if (notes == NULL) {
+        notes = PyList_New(0);
+        if (notes == NULL) {
             return NULL;
         }
-        if (PyObject_SetAttr(self, &_Py_ID(__notes__), new_notes) < 0) {
-            Py_DECREF(new_notes);
+        if (PyObject_SetAttr(self, &_Py_ID(__notes__), notes) < 0) {
+            Py_DECREF(notes);
             return NULL;
         }
-        Py_DECREF(new_notes);
-    }
-    PyObject *notes = PyObject_GetAttr(self, &_Py_ID(__notes__));
-    if (notes == NULL) {
-        return NULL;
     }
-    if (!PyList_Check(notes)) {
+    else if (!PyList_Check(notes)) {
         Py_DECREF(notes);
         PyErr_SetString(PyExc_TypeError, "Cannot add note: __notes__ is not a list");
         return NULL;
@@ -440,7 +440,7 @@ PyExceptionClass_Name(PyObject *ob)
 }
 
 static struct PyMemberDef BaseException_members[] = {
-    {"__suppress_context__", T_BOOL,
+    {"__suppress_context__", Py_T_BOOL,
      offsetof(PyBaseExceptionObject, suppress_context)},
     {NULL}
 };
@@ -570,7 +570,7 @@ SimpleExtendsException(PyExc_Exception, StopAsyncIteration,
  */
 
 static PyMemberDef StopIteration_members[] = {
-    {"value", T_OBJECT, offsetof(PyStopIterationObject, value), 0,
+    {"value", _Py_T_OBJECT, offsetof(PyStopIterationObject, value), 0,
         PyDoc_STR("generator return value")},
     {NULL}  /* Sentinel */
 };
@@ -672,7 +672,7 @@ SystemExit_traverse(PySystemExitObject *self, visitproc visit, void *arg)
 }
 
 static PyMemberDef SystemExit_members[] = {
-    {"code", T_OBJECT, offsetof(PySystemExitObject, code), 0,
+    {"code", _Py_T_OBJECT, offsetof(PySystemExitObject, code), 0,
         PyDoc_STR("exception code")},
     {NULL}  /* Sentinel */
 };
@@ -876,13 +876,9 @@ BaseExceptionGroup_str(PyBaseExceptionGroupObject *self)
 }
 
 static PyObject *
-BaseExceptionGroup_derive(PyObject *self_, PyObject *args)
+BaseExceptionGroup_derive(PyObject *self_, PyObject *excs)
 {
     PyBaseExceptionGroupObject *self = _PyBaseExceptionGroupObject_cast(self_);
-    PyObject *excs = NULL;
-    if (!PyArg_ParseTuple(args, "O", &excs)) {
-        return NULL;
-    }
     PyObject *init_args = PyTuple_Pack(2, self->msg, excs);
     if (!init_args) {
         return NULL;
@@ -941,11 +937,11 @@ exceptiongroup_subset(
     PyException_SetContext(eg, PyException_GetContext(orig));
     PyException_SetCause(eg, PyException_GetCause(orig));
 
-    if (PyObject_HasAttr(orig, &_Py_ID(__notes__))) {
-        PyObject *notes = PyObject_GetAttr(orig, &_Py_ID(__notes__));
-        if (notes == NULL) {
-            goto error;
-        }
+    PyObject *notes;
+    if (PyObject_GetOptionalAttr(orig, &_Py_ID(__notes__), &notes) < 0) {
+        goto error;
+    }
+    if (notes) {
         if (PySequence_Check(notes)) {
             /* Make a copy so the parts have independent notes lists. */
             PyObject *notes_copy = PySequence_List(notes);
@@ -993,7 +989,7 @@ get_matcher_type(PyObject *value,
 {
     assert(value);
 
-    if (PyFunction_Check(value)) {
+    if (PyCallable_Check(value) && !PyType_Check(value)) {
         *type = EXCEPTION_GROUP_MATCH_BY_PREDICATE;
         return 0;
     }
@@ -1017,7 +1013,7 @@ get_matcher_type(PyObject *value,
 error:
     PyErr_SetString(
         PyExc_TypeError,
-        "expected a function, exception type or tuple of exception types");
+        "expected an exception type, a tuple of exception types, or a callable (other than a class)");
     return -1;
 }
 
@@ -1033,7 +1029,7 @@ exceptiongroup_split_check_match(PyObject *exc,
         return PyErr_GivenExceptionMatches(exc, matcher_value);
     }
     case EXCEPTION_GROUP_MATCH_BY_PREDICATE: {
-        assert(PyFunction_Check(matcher_value));
+        assert(PyCallable_Check(matcher_value) && !PyType_Check(matcher_value));
         PyObject *exc_matches = PyObject_CallOneArg(matcher_value, exc);
         if (exc_matches == NULL) {
             return -1;
@@ -1176,13 +1172,8 @@ exceptiongroup_split_recursive(PyObject *exc,
 }
 
 static PyObject *
-BaseExceptionGroup_split(PyObject *self, PyObject *args)
+BaseExceptionGroup_split(PyObject *self, PyObject *matcher_value)
 {
-    PyObject *matcher_value = NULL;
-    if (!PyArg_UnpackTuple(args, "split", 1, 1, &matcher_value)) {
-        return NULL;
-    }
-
     _exceptiongroup_split_matcher_type matcher_type;
     if (get_matcher_type(matcher_value, &matcher_type) < 0) {
         return NULL;
@@ -1207,13 +1198,8 @@ BaseExceptionGroup_split(PyObject *self, PyObject *args)
 }
 
 static PyObject *
-BaseExceptionGroup_subgroup(PyObject *self, PyObject *args)
+BaseExceptionGroup_subgroup(PyObject *self, PyObject *matcher_value)
 {
-    PyObject *matcher_value = NULL;
-    if (!PyArg_UnpackTuple(args, "subgroup", 1, 1, &matcher_value)) {
-        return NULL;
-    }
-
     _exceptiongroup_split_matcher_type matcher_type;
     if (get_matcher_type(matcher_value, &matcher_type) < 0) {
         return NULL;
@@ -1351,7 +1337,10 @@ is_same_exception_metadata(PyObject *exc1, PyObject *exc2)
 PyObject *
 _PyExc_PrepReraiseStar(PyObject *orig, PyObject *excs)
 {
+    /* orig must be a raised & caught exception, so it has a traceback */
     assert(PyExceptionInstance_Check(orig));
+    assert(_PyBaseExceptionObject_cast(orig)->traceback != NULL);
+
     assert(PyList_Check(excs));
 
     Py_ssize_t numexcs = PyList_GET_SIZE(excs);
@@ -1438,10 +1427,46 @@ _PyExc_PrepReraiseStar(PyObject *orig, PyObject *excs)
     return result;
 }
 
+PyObject *
+PyUnstable_Exc_PrepReraiseStar(PyObject *orig, PyObject *excs)
+{
+    if (orig == NULL || !PyExceptionInstance_Check(orig)) {
+        PyErr_SetString(PyExc_TypeError, "orig must be an exception instance");
+        return NULL;
+    }
+    if (excs == NULL || !PyList_Check(excs)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "excs must be a list of exception instances");
+        return NULL;
+    }
+    Py_ssize_t numexcs = PyList_GET_SIZE(excs);
+    for (Py_ssize_t i = 0; i < numexcs; i++) {
+        PyObject *exc = PyList_GET_ITEM(excs, i);
+        if (exc == NULL || !(PyExceptionInstance_Check(exc) || Py_IsNone(exc))) {
+            PyErr_Format(PyExc_TypeError,
+                         "item %d of excs is not an exception", i);
+            return NULL;
+        }
+    }
+
+    /* Make sure that orig has something as traceback, in the interpreter
+     * it always does because it's a raised exception.
+     */
+    PyObject *tb = PyException_GetTraceback(orig);
+
+    if (tb == NULL) {
+        PyErr_Format(PyExc_ValueError, "orig must be a raised exception");
+        return NULL;
+    }
+    Py_DECREF(tb);
+
+    return _PyExc_PrepReraiseStar(orig, excs);
+}
+
 static PyMemberDef BaseExceptionGroup_members[] = {
-    {"message", T_OBJECT, offsetof(PyBaseExceptionGroupObject, msg), READONLY,
+    {"message", _Py_T_OBJECT, offsetof(PyBaseExceptionGroupObject, msg), Py_READONLY,
         PyDoc_STR("exception message")},
-    {"exceptions", T_OBJECT, offsetof(PyBaseExceptionGroupObject, excs), READONLY,
+    {"exceptions", _Py_T_OBJECT, offsetof(PyBaseExceptionGroupObject, excs), Py_READONLY,
         PyDoc_STR("nested exceptions")},
     {NULL}  /* Sentinel */
 };
@@ -1449,9 +1474,9 @@ static PyMemberDef BaseExceptionGroup_members[] = {
 static PyMethodDef BaseExceptionGroup_methods[] = {
     {"__class_getitem__", (PyCFunction)Py_GenericAlias,
       METH_O|METH_CLASS, PyDoc_STR("See PEP 585")},
-    {"derive", (PyCFunction)BaseExceptionGroup_derive, METH_VARARGS},
-    {"split", (PyCFunction)BaseExceptionGroup_split, METH_VARARGS},
-    {"subgroup", (PyCFunction)BaseExceptionGroup_subgroup, METH_VARARGS},
+    {"derive", (PyCFunction)BaseExceptionGroup_derive, METH_O},
+    {"split", (PyCFunction)BaseExceptionGroup_split, METH_O},
+    {"subgroup", (PyCFunction)BaseExceptionGroup_subgroup, METH_O},
     {NULL}
 };
 
@@ -1616,13 +1641,13 @@ ImportError_reduce(PyImportErrorObject *self, PyObject *Py_UNUSED(ignored))
 }
 
 static PyMemberDef ImportError_members[] = {
-    {"msg", T_OBJECT, offsetof(PyImportErrorObject, msg), 0,
+    {"msg", _Py_T_OBJECT, offsetof(PyImportErrorObject, msg), 0,
         PyDoc_STR("exception message")},
-    {"name", T_OBJECT, offsetof(PyImportErrorObject, name), 0,
+    {"name", _Py_T_OBJECT, offsetof(PyImportErrorObject, name), 0,
         PyDoc_STR("module name")},
-    {"path", T_OBJECT, offsetof(PyImportErrorObject, path), 0,
+    {"path", _Py_T_OBJECT, offsetof(PyImportErrorObject, path), 0,
         PyDoc_STR("module path")},
-    {"name_from", T_OBJECT, offsetof(PyImportErrorObject, name_from), 0,
+    {"name_from", _Py_T_OBJECT, offsetof(PyImportErrorObject, name_from), 0,
         PyDoc_STR("name imported from module")},
     {NULL}  /* Sentinel */
 };
@@ -2065,16 +2090,16 @@ OSError_written_set(PyOSErrorObject *self, PyObject *arg, void *context)
 }
 
 static PyMemberDef OSError_members[] = {
-    {"errno", T_OBJECT, offsetof(PyOSErrorObject, myerrno), 0,
+    {"errno", _Py_T_OBJECT, offsetof(PyOSErrorObject, myerrno), 0,
         PyDoc_STR("POSIX exception code")},
-    {"strerror", T_OBJECT, offsetof(PyOSErrorObject, strerror), 0,
+    {"strerror", _Py_T_OBJECT, offsetof(PyOSErrorObject, strerror), 0,
         PyDoc_STR("exception strerror")},
-    {"filename", T_OBJECT, offsetof(PyOSErrorObject, filename), 0,
+    {"filename", _Py_T_OBJECT, offsetof(PyOSErrorObject, filename), 0,
         PyDoc_STR("exception filename")},
-    {"filename2", T_OBJECT, offsetof(PyOSErrorObject, filename2), 0,
+    {"filename2", _Py_T_OBJECT, offsetof(PyOSErrorObject, filename2), 0,
         PyDoc_STR("second exception filename")},
 #ifdef MS_WINDOWS
-    {"winerror", T_OBJECT, offsetof(PyOSErrorObject, winerror), 0,
+    {"winerror", _Py_T_OBJECT, offsetof(PyOSErrorObject, winerror), 0,
         PyDoc_STR("Win32 exception code")},
 #endif
     {NULL}  /* Sentinel */
@@ -2211,7 +2236,7 @@ NameError_traverse(PyNameErrorObject *self, visitproc visit, void *arg)
 }
 
 static PyMemberDef NameError_members[] = {
-        {"name", T_OBJECT, offsetof(PyNameErrorObject, name), 0, PyDoc_STR("name")},
+        {"name", _Py_T_OBJECT, offsetof(PyNameErrorObject, name), 0, PyDoc_STR("name")},
         {NULL}  /* Sentinel */
 };
 
@@ -2330,8 +2355,8 @@ AttributeError_reduce(PyAttributeErrorObject *self, PyObject *Py_UNUSED(ignored)
 }
 
 static PyMemberDef AttributeError_members[] = {
-    {"name", T_OBJECT, offsetof(PyAttributeErrorObject, name), 0, PyDoc_STR("attribute name")},
-    {"obj", T_OBJECT, offsetof(PyAttributeErrorObject, obj), 0, PyDoc_STR("object")},
+    {"name", _Py_T_OBJECT, offsetof(PyAttributeErrorObject, name), 0, PyDoc_STR("attribute name")},
+    {"obj", _Py_T_OBJECT, offsetof(PyAttributeErrorObject, obj), 0, PyDoc_STR("object")},
     {NULL}  /* Sentinel */
 };
 
@@ -2441,8 +2466,6 @@ my_basename(PyObject *name)
     int kind;
     const void *data;
 
-    if (PyUnicode_READY(name))
-        return NULL;
     kind = PyUnicode_KIND(name);
     data = PyUnicode_DATA(name);
     size = PyUnicode_GET_LENGTH(name);
@@ -2505,21 +2528,21 @@ SyntaxError_str(PySyntaxErrorObject *self)
 }
 
 static PyMemberDef SyntaxError_members[] = {
-    {"msg", T_OBJECT, offsetof(PySyntaxErrorObject, msg), 0,
+    {"msg", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, msg), 0,
         PyDoc_STR("exception msg")},
-    {"filename", T_OBJECT, offsetof(PySyntaxErrorObject, filename), 0,
+    {"filename", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, filename), 0,
         PyDoc_STR("exception filename")},
-    {"lineno", T_OBJECT, offsetof(PySyntaxErrorObject, lineno), 0,
+    {"lineno", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, lineno), 0,
         PyDoc_STR("exception lineno")},
-    {"offset", T_OBJECT, offsetof(PySyntaxErrorObject, offset), 0,
+    {"offset", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, offset), 0,
         PyDoc_STR("exception offset")},
-    {"text", T_OBJECT, offsetof(PySyntaxErrorObject, text), 0,
+    {"text", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, text), 0,
         PyDoc_STR("exception text")},
-    {"end_lineno", T_OBJECT, offsetof(PySyntaxErrorObject, end_lineno), 0,
+    {"end_lineno", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, end_lineno), 0,
                    PyDoc_STR("exception end lineno")},
-    {"end_offset", T_OBJECT, offsetof(PySyntaxErrorObject, end_offset), 0,
+    {"end_offset", _Py_T_OBJECT, offsetof(PySyntaxErrorObject, end_offset), 0,
                    PyDoc_STR("exception end offset")},
-    {"print_file_and_line", T_OBJECT,
+    {"print_file_and_line", _Py_T_OBJECT,
         offsetof(PySyntaxErrorObject, print_file_and_line), 0,
         PyDoc_STR("exception print_file_and_line")},
     {NULL}  /* Sentinel */
@@ -2874,15 +2897,15 @@ UnicodeError_traverse(PyUnicodeErrorObject *self, visitproc visit, void *arg)
 }
 
 static PyMemberDef UnicodeError_members[] = {
-    {"encoding", T_OBJECT, offsetof(PyUnicodeErrorObject, encoding), 0,
+    {"encoding", _Py_T_OBJECT, offsetof(PyUnicodeErrorObject, encoding), 0,
         PyDoc_STR("exception encoding")},
-    {"object", T_OBJECT, offsetof(PyUnicodeErrorObject, object), 0,
+    {"object", _Py_T_OBJECT, offsetof(PyUnicodeErrorObject, object), 0,
         PyDoc_STR("exception object")},
-    {"start", T_PYSSIZET, offsetof(PyUnicodeErrorObject, start), 0,
+    {"start", Py_T_PYSSIZET, offsetof(PyUnicodeErrorObject, start), 0,
         PyDoc_STR("exception start")},
-    {"end", T_PYSSIZET, offsetof(PyUnicodeErrorObject, end), 0,
+    {"end", Py_T_PYSSIZET, offsetof(PyUnicodeErrorObject, end), 0,
         PyDoc_STR("exception end")},
-    {"reason", T_OBJECT, offsetof(PyUnicodeErrorObject, reason), 0,
+    {"reason", _Py_T_OBJECT, offsetof(PyUnicodeErrorObject, reason), 0,
         PyDoc_STR("exception reason")},
     {NULL}  /* Sentinel */
 };
@@ -3663,10 +3686,6 @@ _PyExc_FiniTypes(PyInterpreterState *interp)
 PyStatus
 _PyExc_InitGlobalObjects(PyInterpreterState *interp)
 {
-    if (!_Py_IsMainInterpreter(interp)) {
-        return _PyStatus_OK();
-    }
-
     if (preallocate_memerrors() < 0) {
         return _PyStatus_NO_MEMORY();
     }
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index e99e155f2b8c98..5522eba34eace9 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -1,19 +1,22 @@
 /* File object implementation (what's left of it -- see io.py) */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_runtime.h"       // _PyRuntime
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // isatty()
+#endif
+
 #if defined(HAVE_GETC_UNLOCKED) && !defined(_Py_MEMORY_SANITIZER)
-/* clang MemorySanitizer doesn't yet understand getc_unlocked. */
-#define GETC(f) getc_unlocked(f)
-#define FLOCKFILE(f) flockfile(f)
-#define FUNLOCKFILE(f) funlockfile(f)
+   /* clang MemorySanitizer doesn't yet understand getc_unlocked. */
+#  define GETC(f) getc_unlocked(f)
+#  define FLOCKFILE(f) flockfile(f)
+#  define FUNLOCKFILE(f) funlockfile(f)
 #else
-#define GETC(f) getc(f)
-#define FLOCKFILE(f)
-#define FUNLOCKFILE(f)
+#  define GETC(f) getc(f)
+#  define FLOCKFILE(f)
+#  define FUNLOCKFILE(f)
 #endif
 
 /* Newline flags */
@@ -22,10 +25,6 @@
 #define NEWLINE_LF 2            /* \n newline seen */
 #define NEWLINE_CRLF 4          /* \r\n newline seen */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* External C interface */
 
 PyObject *
@@ -175,9 +174,9 @@ PyObject_AsFileDescriptor(PyObject *o)
     PyObject *meth;
 
     if (PyLong_Check(o)) {
-        fd = _PyLong_AsInt(o);
+        fd = PyLong_AsInt(o);
     }
-    else if (_PyObject_LookupAttr(o, &_Py_ID(fileno), &meth) < 0) {
+    else if (PyObject_GetOptionalAttr(o, &_Py_ID(fileno), &meth) < 0) {
         return -1;
     }
     else if (meth != NULL) {
@@ -187,7 +186,7 @@ PyObject_AsFileDescriptor(PyObject *o)
             return -1;
 
         if (PyLong_Check(fno)) {
-            fd = _PyLong_AsInt(fno);
+            fd = PyLong_AsInt(fno);
             Py_DECREF(fno);
         }
         else {
@@ -530,6 +529,13 @@ PyFile_OpenCode(const char *utf8path)
 }
 
 
-#ifdef __cplusplus
+int
+_PyFile_Flush(PyObject *file)
+{
+    PyObject *tmp = PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
+    if (tmp == NULL) {
+        return -1;
+    }
+    Py_DECREF(tmp);
+    return 0;
 }
-#endif
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 83a263c0d9c67e..364cf1553bb5d4 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -4,18 +4,19 @@
    for any kind of float exception without losing portability. */
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_dtoa.h"          // _Py_dg_dtoa()
 #include "pycore_floatobject.h"   // _PyFloat_FormatAdvancedWriter()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_interp.h"        // _PyInterpreterState.float_state
 #include "pycore_long.h"          // _PyLong_GetOne()
-#include "pycore_object.h"        // _PyObject_Init()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
+#include "pycore_object.h"        // _PyObject_Init(), _PyDebugAllocatorStats()
 #include "pycore_pymath.h"        // _PY_SHORT_FLOAT_REPR
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_structseq.h"     // _PyStructSequence_FiniBuiltin()
 
-#include <ctype.h>
-#include <float.h>
+#include <float.h>                // DBL_MAX
 #include <stdlib.h>               // strtol()
 
 /*[clinic input]
@@ -645,7 +646,7 @@ float_rem(PyObject *v, PyObject *w)
     CONVERT_TO_DOUBLE(w, wx);
     if (wx == 0.0) {
         PyErr_SetString(PyExc_ZeroDivisionError,
-                        "float modulo");
+                        "float modulo by zero");
         return NULL;
     }
     mod = fmod(vx, wx);
diff --git a/Objects/frame_layout.md b/Objects/frame_layout.md
index 2f95214db56498..b348e85689f507 100644
--- a/Objects/frame_layout.md
+++ b/Objects/frame_layout.md
@@ -130,3 +130,28 @@ returns. This extra frame is inserted so that `RETURN_VALUE`, `YIELD_VALUE`, and
 `RETURN_GENERATOR` do not need to check whether the current frame is the entry frame.
 The shim frame points to a special code object containing the `INTERPRETER_EXIT`
 instruction which cleans up the shim frame and returns.
+
+
+### The Instruction Pointer
+
+`_PyInterpreterFrame` has two fields which are used to maintain the instruction
+pointer: `instr_ptr` and `return_offset`.
+
+When a frame is executing, `instr_ptr` points to the instruction currently being
+executed. In a suspended frame, it points to the instruction that would execute
+if the frame were to resume. After `frame.f_lineno` is set, `instr_ptr` points to
+the next instruction to be executed. During a call to a python function,
+`instr_ptr` points to the call instruction, because this is what we would expect
+to see in an exception traceback.
+
+The `return_offset` field determines where a `RETURN` should go in the caller,
+relative to `instr_ptr`.  It is only meaningful to the callee, so it needs to
+be set in any instruction that implements a call (to a Python function),
+including CALL, SEND and BINARY_SUBSCR_GETITEM, among others. If there is no
+callee, then return_offset is meaningless.  It is necessary to have a separate
+field for the return offset because (1) if we apply this offset to `instr_ptr`
+while executing the `RETURN`, this is too early and would lose us information
+about the previous instruction which we could need for introspecting and
+debugging. (2) `SEND` needs to pass two offsets to the generator: one for
+`RETURN` and one for `YIELD`. It uses the `oparg` for one, and the
+`return_offset` for the other.
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index 2c90a6b71311ca..be330a775872c2 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -6,17 +6,18 @@
 #include "pycore_function.h"      // _PyFunction_FromConstructor()
 #include "pycore_moduleobject.h"  // _PyModule_GetDict()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
-#include "pycore_opcode.h"        // _PyOpcode_Caches
+#include "pycore_opcode_metadata.h" // _PyOpcode_Deopt, _PyOpcode_Caches
+
 
 #include "frameobject.h"          // PyFrameObject
 #include "pycore_frame.h"
 #include "opcode.h"               // EXTENDED_ARG
-#include "structmember.h"         // PyMemberDef
+
 
 #define OFF(x) offsetof(PyFrameObject, x)
 
 static PyMemberDef frame_memberlist[] = {
-    {"f_trace_lines",   T_BOOL,         OFF(f_trace_lines), 0},
+    {"f_trace_lines",   Py_T_BOOL,         OFF(f_trace_lines), 0},
     {NULL}      /* Sentinel */
 };
 
@@ -24,10 +25,16 @@ static PyMemberDef frame_memberlist[] = {
 static PyObject *
 frame_getlocals(PyFrameObject *f, void *closure)
 {
-    if (PyFrame_FastToLocalsWithError(f) < 0)
+    if (f == NULL) {
+        PyErr_BadInternalCall();
         return NULL;
-    PyObject *locals = f->f_frame->f_locals;
-    return Py_NewRef(locals);
+    }
+    assert(!_PyFrame_IsIncomplete(f->f_frame));
+    PyObject *locals = _PyFrame_GetLocals(f->f_frame, 1);
+    if (locals) {
+        f->f_fast_as_locals = 1;
+    }
+    return locals;
 }
 
 int
@@ -120,10 +127,13 @@ frame_settrace_opcodes(PyFrameObject *f, PyObject* value, void *Py_UNUSED(ignore
     }
     if (value == Py_True) {
         f->f_trace_opcodes = 1;
-        _PyInterpreterState_GET()->f_opcode_trace_set = true;
+        if (f->f_trace) {
+            return _PyEval_SetOpcodeTrace(f, true);
+        }
     }
     else {
         f->f_trace_opcodes = 0;
+        return _PyEval_SetOpcodeTrace(f, false);
     }
     return 0;
 }
@@ -322,6 +332,8 @@ mark_stacks(PyCodeObject *code_obj, int len)
             switch (opcode) {
                 case POP_JUMP_IF_FALSE:
                 case POP_JUMP_IF_TRUE:
+                case POP_JUMP_IF_NONE:
+                case POP_JUMP_IF_NOT_NONE:
                 {
                     int64_t target_stack;
                     int j = next_i + oparg;
@@ -348,7 +360,7 @@ mark_stacks(PyCodeObject *code_obj, int len)
                     break;
                 case JUMP_BACKWARD:
                 case JUMP_BACKWARD_NO_INTERRUPT:
-                    j = i + 1 - oparg;
+                    j = next_i - oparg;
                     assert(j >= 0);
                     assert(j < len);
                     if (stacks[j] == UNINITIALIZED && j < i) {
@@ -404,10 +416,10 @@ mark_stacks(PyCodeObject *code_obj, int len)
                 case LOAD_GLOBAL:
                 {
                     int j = oparg;
+                    next_stack = push_value(next_stack, Object);
                     if (j & 1) {
                         next_stack = push_value(next_stack, Null);
                     }
-                    next_stack = push_value(next_stack, Object);
                     stacks[next_i] = next_stack;
                     break;
                 }
@@ -417,22 +429,12 @@ mark_stacks(PyCodeObject *code_obj, int len)
                     int j = oparg;
                     if (j & 1) {
                         next_stack = pop_value(next_stack);
-                        next_stack = push_value(next_stack, Null);
                         next_stack = push_value(next_stack, Object);
+                        next_stack = push_value(next_stack, Null);
                     }
                     stacks[next_i] = next_stack;
                     break;
                 }
-                case CALL:
-                {
-                    int args = oparg;
-                    for (int j = 0; j < args+2; j++) {
-                        next_stack = pop_value(next_stack);
-                    }
-                    next_stack = push_value(next_stack, Object);
-                    stacks[next_i] = next_stack;
-                    break;
-                }
                 case SWAP:
                 {
                     int n = oparg;
@@ -590,39 +592,28 @@ first_line_not_before(int *lines, int len, int line)
     return result;
 }
 
-static PyFrameState
-_PyFrame_GetState(PyFrameObject *frame)
+static bool
+frame_is_cleared(PyFrameObject *frame)
 {
     assert(!_PyFrame_IsIncomplete(frame->f_frame));
     if (frame->f_frame->stacktop == 0) {
-        return FRAME_CLEARED;
+        return true;
     }
-    switch(frame->f_frame->owner) {
-        case FRAME_OWNED_BY_GENERATOR:
-        {
-            PyGenObject *gen = _PyFrame_GetGenerator(frame->f_frame);
-            return gen->gi_frame_state;
-        }
-        case FRAME_OWNED_BY_THREAD:
-        {
-            if (_PyInterpreterFrame_LASTI(frame->f_frame) < 0) {
-                return FRAME_CREATED;
-            }
-            switch (frame->f_frame->prev_instr->op.code)
-            {
-                case COPY_FREE_VARS:
-                case MAKE_CELL:
-                case RETURN_GENERATOR:
-                    /* Frame not fully initialized */
-                    return FRAME_CREATED;
-                default:
-                    return FRAME_EXECUTING;
-            }
-        }
-        case FRAME_OWNED_BY_FRAME_OBJECT:
-            return FRAME_COMPLETED;
+    if (frame->f_frame->owner == FRAME_OWNED_BY_GENERATOR) {
+        PyGenObject *gen = _PyFrame_GetGenerator(frame->f_frame);
+        return gen->gi_frame_state == FRAME_CLEARED;
     }
-    Py_UNREACHABLE();
+    return false;
+}
+
+static bool frame_is_suspended(PyFrameObject *frame)
+{
+    assert(!_PyFrame_IsIncomplete(frame->f_frame));
+    if (frame->f_frame->owner == FRAME_OWNED_BY_GENERATOR) {
+        PyGenObject *gen = _PyFrame_GetGenerator(frame->f_frame);
+        return FRAME_STATE_SUSPENDED(gen->gi_frame_state);
+    }
+    return false;
 }
 
 /* Setter for f_lineno - you can set f_lineno from within a trace function in
@@ -642,6 +633,7 @@ _PyFrame_GetState(PyFrameObject *frame)
 static int
 frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignored))
 {
+    PyCodeObject *code = _PyFrame_GetCode(f->f_frame);
     if (p_new_lineno == NULL) {
         PyErr_SetString(PyExc_AttributeError, "cannot delete attribute");
         return -1;
@@ -653,7 +645,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
         return -1;
     }
 
-    PyFrameState state = _PyFrame_GetState(f);
+    bool is_suspended = frame_is_suspended(f);
     /*
      * This code preserves the historical restrictions on
      * setting the line number of a frame.
@@ -719,7 +711,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
     }
     new_lineno = (int)l_new_lineno;
 
-    if (new_lineno < f->f_frame->f_code->co_firstlineno) {
+    if (new_lineno < code->co_firstlineno) {
         PyErr_Format(PyExc_ValueError,
                     "line %d comes before the current code block",
                     new_lineno);
@@ -728,8 +720,8 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
 
     /* PyCode_NewWithPosOnlyArgs limits co_code to be under INT_MAX so this
      * should never overflow. */
-    int len = (int)Py_SIZE(f->f_frame->f_code);
-    int *lines = marklines(f->f_frame->f_code, len);
+    int len = (int)Py_SIZE(code);
+    int *lines = marklines(code, len);
     if (lines == NULL) {
         return -1;
     }
@@ -743,7 +735,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
         return -1;
     }
 
-    int64_t *stacks = mark_stacks(f->f_frame->f_code, len);
+    int64_t *stacks = mark_stacks(code, len);
     if (stacks == NULL) {
         PyMem_Free(lines);
         return -1;
@@ -788,7 +780,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
     // in the new location. Rather than crashing or changing co_code, just bind
     // None instead:
     int unbound = 0;
-    for (int i = 0; i < f->f_frame->f_code->co_nlocalsplus; i++) {
+    for (int i = 0; i < code->co_nlocalsplus; i++) {
         // Counting every unbound local is overly-cautious, but a full flow
         // analysis (like we do in the compiler) is probably too expensive:
         unbound += f->f_frame->localsplus[i] == NULL;
@@ -801,7 +793,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
         }
         // Do this in a second pass to avoid writing a bunch of Nones when
         // warnings are being treated as errors and the previous bit raises:
-        for (int i = 0; i < f->f_frame->f_code->co_nlocalsplus; i++) {
+        for (int i = 0; i < code->co_nlocalsplus; i++) {
             if (f->f_frame->localsplus[i] == NULL) {
                 f->f_frame->localsplus[i] = Py_NewRef(Py_None);
                 unbound--;
@@ -809,20 +801,17 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
         }
         assert(unbound == 0);
     }
-    if (state == FRAME_SUSPENDED) {
+    if (is_suspended) {
         /* Account for value popped by yield */
         start_stack = pop_value(start_stack);
     }
     while (start_stack > best_stack) {
         if (top_of_stack(start_stack) == Except) {
             /* Pop exception stack as well as the evaluation stack */
-            PyThreadState *tstate = _PyThreadState_GET();
-            _PyErr_StackItem *exc_info = tstate->exc_info;
-            PyObject *value = exc_info->exc_value;
             PyObject *exc = _PyFrame_StackPop(f->f_frame);
             assert(PyExceptionInstance_Check(exc) || exc == Py_None);
-            exc_info->exc_value = exc;
-            Py_XDECREF(value);
+            PyThreadState *tstate = _PyThreadState_GET();
+            Py_XSETREF(tstate->exc_info->exc_value, exc);
         }
         else {
             PyObject *v = _PyFrame_StackPop(f->f_frame);
@@ -832,7 +821,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
     }
     /* Finally set the new lasti and return OK. */
     f->f_lineno = 0;
-    f->f_frame->prev_instr = _PyCode_CODE(f->f_frame->f_code) + best_addr;
+    f->f_frame->instr_ptr = _PyCode_CODE(code) + best_addr;
     return 0;
 }
 
@@ -853,6 +842,9 @@ frame_settrace(PyFrameObject *f, PyObject* v, void *closure)
     }
     if (v != f->f_trace) {
         Py_XSETREF(f->f_trace, Py_XNewRef(v));
+        if (v != NULL && f->f_trace_opcodes) {
+            return _PyEval_SetOpcodeTrace(f, true);
+        }
     }
     return 0;
 }
@@ -878,23 +870,24 @@ frame_dealloc(PyFrameObject *f)
     /* It is the responsibility of the owning generator/coroutine
      * to have cleared the generator pointer */
 
-    assert(f->f_frame->owner != FRAME_OWNED_BY_GENERATOR ||
-        _PyFrame_GetGenerator(f->f_frame)->gi_frame_state == FRAME_CLEARED);
-
     if (_PyObject_GC_IS_TRACKED(f)) {
         _PyObject_GC_UNTRACK(f);
     }
 
     Py_TRASHCAN_BEGIN(f, frame_dealloc);
-    PyCodeObject *co = NULL;
+    PyObject *co = NULL;
+
+    /* GH-106092: If f->f_frame was on the stack and we reached the maximum
+     * nesting depth for deallocations, the trashcan may have delayed this
+     * deallocation until after f->f_frame is freed. Avoid dereferencing
+     * f->f_frame unless we know it still points to valid memory. */
+    _PyInterpreterFrame *frame = (_PyInterpreterFrame *)f->_f_frame_data;
 
     /* Kill all local variables including specials, if we own them */
-    if (f->f_frame->owner == FRAME_OWNED_BY_FRAME_OBJECT) {
-        assert(f->f_frame == (_PyInterpreterFrame *)f->_f_frame_data);
-        _PyInterpreterFrame *frame = (_PyInterpreterFrame *)f->_f_frame_data;
+    if (f->f_frame == frame && frame->owner == FRAME_OWNED_BY_FRAME_OBJECT) {
         /* Don't clear code object until the end */
-        co = frame->f_code;
-        frame->f_code = NULL;
+        co = frame->f_executable;
+        frame->f_executable = NULL;
         Py_CLEAR(frame->f_funcobj);
         Py_CLEAR(frame->f_locals);
         PyObject **locals = _PyFrame_GetLocalsArray(frame);
@@ -944,6 +937,9 @@ frame_clear(PyFrameObject *f, PyObject *Py_UNUSED(ignored))
         if (gen->gi_frame_state == FRAME_EXECUTING) {
             goto running;
         }
+        if (FRAME_STATE_SUSPENDED(gen->gi_frame_state)) {
+            goto suspended;
+        }
         _PyGen_Finalize((PyObject *)gen);
     }
     else if (f->f_frame->owner == FRAME_OWNED_BY_THREAD) {
@@ -958,6 +954,10 @@ frame_clear(PyFrameObject *f, PyObject *Py_UNUSED(ignored))
     PyErr_SetString(PyExc_RuntimeError,
                     "cannot clear an executing frame");
     return NULL;
+suspended:
+    PyErr_SetString(PyExc_RuntimeError,
+                    "cannot clear a suspended frame");
+    return NULL;
 }
 
 PyDoc_STRVAR(clear__doc__,
@@ -968,7 +968,7 @@ frame_sizeof(PyFrameObject *f, PyObject *Py_UNUSED(ignored))
 {
     Py_ssize_t res;
     res = offsetof(PyFrameObject, _f_frame_data) + offsetof(_PyInterpreterFrame, localsplus);
-    PyCodeObject *code = f->f_frame->f_code;
+    PyCodeObject *code = _PyFrame_GetCode(f->f_frame);
     res += _PyFrame_NumSlotsForCodeObject(code) * sizeof(PyObject *);
     return PyLong_FromSsize_t(res);
 }
@@ -980,7 +980,7 @@ static PyObject *
 frame_repr(PyFrameObject *f)
 {
     int lineno = PyFrame_GetLineNumber(f);
-    PyCodeObject *code = f->f_frame->f_code;
+    PyCodeObject *code = _PyFrame_GetCode(f->f_frame);
     return PyUnicode_FromFormat(
         "<frame at %p, file %R, line %d, code %S>",
         f, code->co_filename, lineno, code->co_name);
@@ -1089,7 +1089,7 @@ PyFrame_New(PyThreadState *tstate, PyCodeObject *code,
     f->f_frame = (_PyInterpreterFrame *)f->_f_frame_data;
     f->f_frame->owner = FRAME_OWNED_BY_FRAME_OBJECT;
     // This frame needs to be "complete", so pretend that the first RESUME ran:
-    f->f_frame->prev_instr = _PyCode_CODE(code) + code->_co_firsttraceable;
+    f->f_frame->instr_ptr = _PyCode_CODE(code) + code->_co_firsttraceable + 1;
     assert(!_PyFrame_IsIncomplete(f->f_frame));
     Py_DECREF(func);
     _PyObject_GC_TRACK(f);
@@ -1102,8 +1102,8 @@ _PyFrame_OpAlreadyRan(_PyInterpreterFrame *frame, int opcode, int oparg)
     // This only works when opcode is a non-quickened form:
     assert(_PyOpcode_Deopt[opcode] == opcode);
     int check_oparg = 0;
-    for (_Py_CODEUNIT *instruction = _PyCode_CODE(frame->f_code);
-         instruction < frame->prev_instr; instruction++)
+    for (_Py_CODEUNIT *instruction = _PyCode_CODE(_PyFrame_GetCode(frame));
+         instruction < frame->instr_ptr; instruction++)
     {
         int check_opcode = _PyOpcode_Deopt[instruction->op.code];
         check_oparg |= instruction->op.arg;
@@ -1128,7 +1128,7 @@ frame_init_get_vars(_PyInterpreterFrame *frame)
 {
     // COPY_FREE_VARS has no quickened forms, so no need to use _PyOpcode_Deopt
     // here:
-    PyCodeObject *co = frame->f_code;
+    PyCodeObject *co = _PyFrame_GetCode(frame);
     int lasti = _PyInterpreterFrame_LASTI(frame);
     if (!(lasti < 0 && _PyCode_CODE(co)->op.code == COPY_FREE_VARS
           && PyFunction_Check(frame->f_funcobj)))
@@ -1145,7 +1145,7 @@ frame_init_get_vars(_PyInterpreterFrame *frame)
         frame->localsplus[offset + i] = Py_NewRef(o);
     }
     // COPY_FREE_VARS doesn't have inline CACHEs, either:
-    frame->prev_instr = _PyCode_CODE(frame->f_code);
+    frame->instr_ptr = _PyCode_CODE(_PyFrame_GetCode(frame));
 }
 
 
@@ -1185,7 +1185,7 @@ frame_get_var(_PyInterpreterFrame *frame, PyCodeObject *co, int i,
                     // (likely) MAKE_CELL must have executed already.
                     value = PyCell_GET(value);
                 }
-                // (likely) Otherwise it it is an arg (kind & CO_FAST_LOCAL),
+                // (likely) Otherwise it is an arg (kind & CO_FAST_LOCAL),
                 // with the initial value set when the frame was created...
                 // (unlikely) ...or it was set to some initial value by
                 // an earlier call to PyFrame_LocalsToFast().
@@ -1199,21 +1199,34 @@ frame_get_var(_PyInterpreterFrame *frame, PyCodeObject *co, int i,
     return 1;
 }
 
-int
-_PyFrame_FastToLocalsWithError(_PyInterpreterFrame *frame)
+
+PyObject *
+_PyFrame_GetLocals(_PyInterpreterFrame *frame, int include_hidden)
 {
     /* Merge fast locals into f->f_locals */
     PyObject *locals = frame->f_locals;
     if (locals == NULL) {
         locals = frame->f_locals = PyDict_New();
         if (locals == NULL) {
-            return -1;
+            return NULL;
+        }
+    }
+    PyObject *hidden = NULL;
+
+    /* If include_hidden, "hidden" fast locals (from inlined comprehensions in
+       module/class scopes) will be included in the returned dict, but not in
+       frame->f_locals; the returned dict will be a modified copy. Non-hidden
+       locals will still be updated in frame->f_locals. */
+    if (include_hidden) {
+        hidden = PyDict_New();
+        if (hidden == NULL) {
+            return NULL;
         }
     }
 
     frame_init_get_vars(frame);
 
-    PyCodeObject *co = frame->f_code;
+    PyCodeObject *co = _PyFrame_GetCode(frame);
     for (int i = 0; i < co->co_nlocalsplus; i++) {
         PyObject *value;  // borrowed reference
         if (!frame_get_var(frame, co, i, &value)) {
@@ -1223,6 +1236,11 @@ _PyFrame_FastToLocalsWithError(_PyInterpreterFrame *frame)
         PyObject *name = PyTuple_GET_ITEM(co->co_localsplusnames, i);
         _PyLocals_Kind kind = _PyLocals_GetKind(co->co_localspluskinds, i);
         if (kind & CO_FAST_HIDDEN) {
+            if (include_hidden && value != NULL) {
+                if (PyObject_SetItem(hidden, name, value) != 0) {
+                    goto error;
+                }
+            }
             continue;
         }
         if (value == NULL) {
@@ -1231,16 +1249,53 @@ _PyFrame_FastToLocalsWithError(_PyInterpreterFrame *frame)
                     PyErr_Clear();
                 }
                 else {
-                    return -1;
+                    goto error;
                 }
             }
         }
         else {
             if (PyObject_SetItem(locals, name, value) != 0) {
-                return -1;
+                goto error;
             }
         }
     }
+
+    if (include_hidden && PyDict_Size(hidden)) {
+        PyObject *innerlocals = PyDict_New();
+        if (innerlocals == NULL) {
+            goto error;
+        }
+        if (PyDict_Merge(innerlocals, locals, 1) != 0) {
+            Py_DECREF(innerlocals);
+            goto error;
+        }
+        if (PyDict_Merge(innerlocals, hidden, 1) != 0) {
+            Py_DECREF(innerlocals);
+            goto error;
+        }
+        locals = innerlocals;
+    }
+    else {
+        Py_INCREF(locals);
+    }
+    Py_CLEAR(hidden);
+
+    return locals;
+
+  error:
+    Py_XDECREF(hidden);
+    return NULL;
+}
+
+
+int
+_PyFrame_FastToLocalsWithError(_PyInterpreterFrame *frame)
+{
+    PyObject *locals = _PyFrame_GetLocals(frame, 0);
+    if (locals == NULL) {
+        return -1;
+    }
+    Py_DECREF(locals);
     return 0;
 }
 
@@ -1257,7 +1312,7 @@ PyFrame_GetVar(PyFrameObject *frame_obj, PyObject *name)
     _PyInterpreterFrame *frame = frame_obj->f_frame;
     frame_init_get_vars(frame);
 
-    PyCodeObject *co = frame->f_code;
+    PyCodeObject *co = _PyFrame_GetCode(frame);
     for (int i = 0; i < co->co_nlocalsplus; i++) {
         PyObject *var_name = PyTuple_GET_ITEM(co->co_localsplusnames, i);
         if (!_PyUnicode_Equal(var_name, name)) {
@@ -1295,11 +1350,11 @@ PyFrame_GetVarString(PyFrameObject *frame, const char *name)
 int
 PyFrame_FastToLocalsWithError(PyFrameObject *f)
 {
-    assert(!_PyFrame_IsIncomplete(f->f_frame));
     if (f == NULL) {
         PyErr_BadInternalCall();
         return -1;
     }
+    assert(!_PyFrame_IsIncomplete(f->f_frame));
     int err = _PyFrame_FastToLocalsWithError(f->f_frame);
     if (err == 0) {
         f->f_fast_as_locals = 1;
@@ -1331,7 +1386,7 @@ _PyFrame_LocalsToFast(_PyInterpreterFrame *frame, int clear)
         return;
     }
     fast = _PyFrame_GetLocalsArray(frame);
-    co = frame->f_code;
+    co = _PyFrame_GetCode(frame);
 
     PyObject *exc = PyErr_GetRaisedException();
     for (int i = 0; i < co->co_nlocalsplus; i++) {
@@ -1397,7 +1452,7 @@ void
 PyFrame_LocalsToFast(PyFrameObject *f, int clear)
 {
     assert(!_PyFrame_IsIncomplete(f->f_frame));
-    if (f && f->f_fast_as_locals && _PyFrame_GetState(f) != FRAME_CLEARED) {
+    if (f && f->f_fast_as_locals && !frame_is_cleared(f)) {
         _PyFrame_LocalsToFast(f->f_frame, clear);
         f->f_fast_as_locals = 0;
     }
@@ -1417,7 +1472,7 @@ PyFrame_GetCode(PyFrameObject *frame)
 {
     assert(frame != NULL);
     assert(!_PyFrame_IsIncomplete(frame->f_frame));
-    PyCodeObject *code = frame->f_frame->f_code;
+    PyCodeObject *code = _PyFrame_GetCode(frame->f_frame);
     assert(code != NULL);
     return (PyCodeObject*)Py_NewRef(code);
 }
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 78c1144afca2eb..4d88dd2229295d 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -3,12 +3,10 @@
 
 #include "Python.h"
 #include "pycore_ceval.h"         // _PyEval_BuiltinsFromGlobals()
-#include "pycore_code.h"          // _Py_next_func_version
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
-#include "structmember.h"         // PyMemberDef
 
-static PyObject* func_repr(PyFunctionObject *op);
 
 static const char *
 func_event_name(PyFunction_WatchEvent event) {
@@ -35,21 +33,9 @@ notify_func_watchers(PyInterpreterState *interp, PyFunction_WatchEvent event,
             // callback must be non-null if the watcher bit is set
             assert(cb != NULL);
             if (cb(event, func, new_value) < 0) {
-                // Don't risk resurrecting the func if an unraisablehook keeps a
-                // reference; pass a string as context.
-                PyObject *context = NULL;
-                PyObject *repr = func_repr(func);
-                if (repr != NULL) {
-                    context = PyUnicode_FromFormat(
-                        "%s watcher callback for %U",
-                        func_event_name(event), repr);
-                    Py_DECREF(repr);
-                }
-                if (context == NULL) {
-                    context = Py_NewRef(Py_None);
-                }
-                PyErr_WriteUnraisable(context);
-                Py_DECREF(context);
+                PyErr_FormatUnraisable(
+                    "Exception ignored in %s watcher callback for function %U at %p",
+                    func_event_name(event), func->func_qualname, func);
             }
         }
         i++;
@@ -106,9 +92,14 @@ PyFunction_ClearWatcher(int watcher_id)
 PyFunctionObject *
 _PyFunction_FromConstructor(PyFrameConstructor *constr)
 {
+    PyObject *module;
+    if (PyDict_GetItemRef(constr->fc_globals, &_Py_ID(__name__), &module) < 0) {
+        return NULL;
+    }
 
     PyFunctionObject *op = PyObject_GC_New(PyFunctionObject, &PyFunction_Type);
     if (op == NULL) {
+        Py_XDECREF(module);
         return NULL;
     }
     op->func_globals = Py_NewRef(constr->fc_globals);
@@ -122,11 +113,9 @@ _PyFunction_FromConstructor(PyFrameConstructor *constr)
     op->func_doc = Py_NewRef(Py_None);
     op->func_dict = NULL;
     op->func_weakreflist = NULL;
-    op->func_module = Py_XNewRef(PyDict_GetItem(op->func_globals, &_Py_ID(__name__)));
-    if (!op->func_module) {
-        PyErr_Clear();
-    }
+    op->func_module = module;
     op->func_annotations = NULL;
+    op->func_typeparams = NULL;
     op->vectorcall = _PyFunction_Vectorcall;
     op->func_version = 0;
     _PyObject_GC_TRACK(op);
@@ -169,12 +158,11 @@ PyFunction_NewWithQualName(PyObject *code, PyObject *globals, PyObject *qualname
     Py_INCREF(doc);
 
     // __module__: Use globals['__name__'] if it exists, or NULL.
-    PyObject *module = PyDict_GetItemWithError(globals, &_Py_ID(__name__));
+    PyObject *module;
     PyObject *builtins = NULL;
-    if (module == NULL && _PyErr_Occurred(tstate)) {
+    if (PyDict_GetItemRef(globals, &_Py_ID(__name__), &module) < 0) {
         goto error;
     }
-    Py_XINCREF(module);
 
     builtins = _PyEval_BuiltinsFromGlobals(tstate, globals); // borrowed ref
     if (builtins == NULL) {
@@ -202,6 +190,7 @@ PyFunction_NewWithQualName(PyObject *code, PyObject *globals, PyObject *qualname
     op->func_weakreflist = NULL;
     op->func_module = module;
     op->func_annotations = NULL;
+    op->func_typeparams = NULL;
     op->vectorcall = _PyFunction_Vectorcall;
     op->func_version = 0;
     _PyObject_GC_TRACK(op);
@@ -219,7 +208,79 @@ PyFunction_NewWithQualName(PyObject *code, PyObject *globals, PyObject *qualname
     return NULL;
 }
 
-uint32_t _PyFunction_GetVersionForCurrentState(PyFunctionObject *func)
+/*
+Function versions
+-----------------
+
+Function versions are used to detect when a function object has been
+updated, invalidating inline cache data used by the `CALL` bytecode
+(notably `CALL_PY_EXACT_ARGS` and a few other `CALL` specializations).
+
+They are also used by the Tier 2 superblock creation code to find
+the function being called (and from there the code object).
+
+How does a function's `func_version` field get initialized?
+
+- `PyFunction_New` and friends initialize it to 0.
+- The `MAKE_FUNCTION` instruction sets it from the code's `co_version`.
+- It is reset to 0 when various attributes like `__code__` are set.
+- A new version is allocated by `_PyFunction_GetVersionForCurrentState`
+  when the specializer needs a version and the version is 0.
+
+The latter allocates versions using a counter in the interpreter state;
+when the counter wraps around to 0, no more versions are allocated.
+There is one other special case: functions with a non-standard
+`vectorcall` field are not given a version.
+
+When the function version is 0, the `CALL` bytecode is not specialized.
+
+Code object versions
+--------------------
+
+So where to code objects get their `co_version`?
+There is a per-interpreter counter, `next_func_version`.
+This is initialized to 1 when the interpreter is created.
+
+Code objects get a new `co_version` allocated from this counter upon
+creation. Since code objects are nominally immutable, `co_version` can
+not be invalidated. The only way it can be 0 is when 2**32 or more
+code objects have been created during the process's lifetime.
+(The counter isn't reset by `fork()`, extending the lifetime.)
+*/
+
+void
+_PyFunction_SetVersion(PyFunctionObject *func, uint32_t version)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (func->func_version != 0) {
+        PyFunctionObject **slot =
+            interp->func_state.func_version_cache
+            + (func->func_version % FUNC_VERSION_CACHE_SIZE);
+        if (*slot == func) {
+            *slot = NULL;
+        }
+    }
+    func->func_version = version;
+    if (version != 0) {
+        interp->func_state.func_version_cache[
+            version % FUNC_VERSION_CACHE_SIZE] = func;
+    }
+}
+
+PyFunctionObject *
+_PyFunction_LookupByVersion(uint32_t version)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    PyFunctionObject *func = interp->func_state.func_version_cache[
+        version % FUNC_VERSION_CACHE_SIZE];
+    if (func != NULL && func->func_version == version) {
+        return func;
+    }
+    return NULL;
+}
+
+uint32_t
+_PyFunction_GetVersionForCurrentState(PyFunctionObject *func)
 {
     if (func->func_version != 0) {
         return func->func_version;
@@ -232,7 +293,7 @@ uint32_t _PyFunction_GetVersionForCurrentState(PyFunctionObject *func)
         return 0;
     }
     uint32_t v = interp->func_state.next_version++;
-    func->func_version = v;
+    _PyFunction_SetVersion(func, v);
     return v;
 }
 
@@ -300,7 +361,7 @@ PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
     }
     handle_func_event(PyFunction_EVENT_MODIFY_DEFAULTS,
                       (PyFunctionObject *) op, defaults);
-    ((PyFunctionObject *)op)->func_version = 0;
+    _PyFunction_SetVersion((PyFunctionObject *)op, 0);
     Py_XSETREF(((PyFunctionObject *)op)->func_defaults, defaults);
     return 0;
 }
@@ -309,7 +370,7 @@ void
 PyFunction_SetVectorcall(PyFunctionObject *func, vectorcallfunc vectorcall)
 {
     assert(func != NULL);
-    func->func_version = 0;
+    _PyFunction_SetVersion(func, 0);
     func->vectorcall = vectorcall;
 }
 
@@ -342,7 +403,7 @@ PyFunction_SetKwDefaults(PyObject *op, PyObject *defaults)
     }
     handle_func_event(PyFunction_EVENT_MODIFY_KWDEFAULTS,
                       (PyFunctionObject *) op, defaults);
-    ((PyFunctionObject *)op)->func_version = 0;
+    _PyFunction_SetVersion((PyFunctionObject *)op, 0);
     Py_XSETREF(((PyFunctionObject *)op)->func_kwdefaults, defaults);
     return 0;
 }
@@ -375,7 +436,7 @@ PyFunction_SetClosure(PyObject *op, PyObject *closure)
                      Py_TYPE(closure)->tp_name);
         return -1;
     }
-    ((PyFunctionObject *)op)->func_version = 0;
+    _PyFunction_SetVersion((PyFunctionObject *)op, 0);
     Py_XSETREF(((PyFunctionObject *)op)->func_closure, closure);
     return 0;
 }
@@ -437,7 +498,7 @@ PyFunction_SetAnnotations(PyObject *op, PyObject *annotations)
                         "non-dict annotations");
         return -1;
     }
-    ((PyFunctionObject *)op)->func_version = 0;
+    _PyFunction_SetVersion((PyFunctionObject *)op, 0);
     Py_XSETREF(((PyFunctionObject *)op)->func_annotations, annotations);
     return 0;
 }
@@ -447,11 +508,11 @@ PyFunction_SetAnnotations(PyObject *op, PyObject *annotations)
 #define OFF(x) offsetof(PyFunctionObject, x)
 
 static PyMemberDef func_memberlist[] = {
-    {"__closure__",   T_OBJECT,     OFF(func_closure), READONLY},
-    {"__doc__",       T_OBJECT,     OFF(func_doc), 0},
-    {"__globals__",   T_OBJECT,     OFF(func_globals), READONLY},
-    {"__module__",    T_OBJECT,     OFF(func_module), 0},
-    {"__builtins__",  T_OBJECT,     OFF(func_builtins), READONLY},
+    {"__closure__",   _Py_T_OBJECT,     OFF(func_closure), Py_READONLY},
+    {"__doc__",       _Py_T_OBJECT,     OFF(func_doc), 0},
+    {"__globals__",   _Py_T_OBJECT,     OFF(func_globals), Py_READONLY},
+    {"__module__",    _Py_T_OBJECT,     OFF(func_module), 0},
+    {"__builtins__",  _Py_T_OBJECT,     OFF(func_builtins), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -495,8 +556,22 @@ func_set_code(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
                      nclosure, nfree);
         return -1;
     }
+
+    PyObject *func_code = PyFunction_GET_CODE(op);
+    int old_flags = ((PyCodeObject *)func_code)->co_flags;
+    int new_flags = ((PyCodeObject *)value)->co_flags;
+    int mask = CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR;
+    if ((old_flags & mask) != (new_flags & mask)) {
+        if (PyErr_Warn(PyExc_DeprecationWarning,
+            "Assigning a code object of non-matching type is deprecated "
+            "(e.g., from a generator to a plain function)") < 0)
+        {
+            return -1;
+        }
+    }
+
     handle_func_event(PyFunction_EVENT_MODIFY_CODE, op, value);
-    op->func_version = 0;
+    _PyFunction_SetVersion(op, 0);
     Py_XSETREF(op->func_code, Py_NewRef(value));
     return 0;
 }
@@ -576,7 +651,7 @@ func_set_defaults(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored
     }
 
     handle_func_event(PyFunction_EVENT_MODIFY_DEFAULTS, op, value);
-    op->func_version = 0;
+    _PyFunction_SetVersion(op, 0);
     Py_XSETREF(op->func_defaults, Py_XNewRef(value));
     return 0;
 }
@@ -617,7 +692,7 @@ func_set_kwdefaults(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignor
     }
 
     handle_func_event(PyFunction_EVENT_MODIFY_KWDEFAULTS, op, value);
-    op->func_version = 0;
+    _PyFunction_SetVersion(op, 0);
     Py_XSETREF(op->func_kwdefaults, Py_XNewRef(value));
     return 0;
 }
@@ -647,11 +722,47 @@ func_set_annotations(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(igno
             "__annotations__ must be set to a dict object");
         return -1;
     }
-    op->func_version = 0;
+    _PyFunction_SetVersion(op, 0);
     Py_XSETREF(op->func_annotations, Py_XNewRef(value));
     return 0;
 }
 
+static PyObject *
+func_get_type_params(PyFunctionObject *op, void *Py_UNUSED(ignored))
+{
+    if (op->func_typeparams == NULL) {
+        return PyTuple_New(0);
+    }
+
+    assert(PyTuple_Check(op->func_typeparams));
+    return Py_NewRef(op->func_typeparams);
+}
+
+static int
+func_set_type_params(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
+{
+    /* Not legal to del f.__type_params__ or to set it to anything
+     * other than a tuple object. */
+    if (value == NULL || !PyTuple_Check(value)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "__type_params__ must be set to a tuple");
+        return -1;
+    }
+    Py_XSETREF(op->func_typeparams, Py_NewRef(value));
+    return 0;
+}
+
+PyObject *
+_Py_set_function_type_params(PyThreadState *Py_UNUSED(ignored), PyObject *func,
+                             PyObject *type_params)
+{
+    assert(PyFunction_Check(func));
+    assert(PyTuple_Check(type_params));
+    PyFunctionObject *f = (PyFunctionObject *)func;
+    Py_XSETREF(f->func_typeparams, Py_NewRef(type_params));
+    return Py_NewRef(func);
+}
+
 static PyGetSetDef func_getsetlist[] = {
     {"__code__", (getter)func_get_code, (setter)func_set_code},
     {"__defaults__", (getter)func_get_defaults,
@@ -663,6 +774,8 @@ static PyGetSetDef func_getsetlist[] = {
     {"__dict__", PyObject_GenericGetDict, PyObject_GenericSetDict},
     {"__name__", (getter)func_get_name, (setter)func_set_name},
     {"__qualname__", (getter)func_get_qualname, (setter)func_set_qualname},
+    {"__type_params__", (getter)func_get_type_params,
+     (setter)func_set_type_params},
     {NULL} /* Sentinel */
 };
 
@@ -773,7 +886,7 @@ func_new_impl(PyTypeObject *type, PyCodeObject *code, PyObject *globals,
 static int
 func_clear(PyFunctionObject *op)
 {
-    op->func_version = 0;
+    _PyFunction_SetVersion(op, 0);
     Py_CLEAR(op->func_globals);
     Py_CLEAR(op->func_builtins);
     Py_CLEAR(op->func_module);
@@ -783,13 +896,14 @@ func_clear(PyFunctionObject *op)
     Py_CLEAR(op->func_dict);
     Py_CLEAR(op->func_closure);
     Py_CLEAR(op->func_annotations);
+    Py_CLEAR(op->func_typeparams);
     // Don't Py_CLEAR(op->func_code), since code is always required
     // to be non-NULL. Similarly, name and qualname shouldn't be NULL.
     // However, name and qualname could be str subclasses, so they
     // could have reference cycles. The solution is to replace them
     // with a genuinely immutable string.
-    Py_SETREF(op->func_name, Py_NewRef(&_Py_STR(empty)));
-    Py_SETREF(op->func_qualname, Py_NewRef(&_Py_STR(empty)));
+    Py_SETREF(op->func_name, &_Py_STR(empty));
+    Py_SETREF(op->func_qualname, &_Py_STR(empty));
     return 0;
 }
 
@@ -808,6 +922,7 @@ func_dealloc(PyFunctionObject *op)
     if (op->func_weakreflist != NULL) {
         PyObject_ClearWeakRefs((PyObject *) op);
     }
+    _PyFunction_SetVersion(op, 0);
     (void)func_clear(op);
     // These aren't cleared by func_clear().
     Py_DECREF(op->func_code);
@@ -837,6 +952,7 @@ func_traverse(PyFunctionObject *f, visitproc visit, void *arg)
     Py_VISIT(f->func_dict);
     Py_VISIT(f->func_closure);
     Py_VISIT(f->func_annotations);
+    Py_VISIT(f->func_typeparams);
     Py_VISIT(f->func_qualname);
     return 0;
 }
@@ -898,17 +1014,12 @@ PyTypeObject PyFunction_Type = {
 static int
 functools_copy_attr(PyObject *wrapper, PyObject *wrapped, PyObject *name)
 {
-    PyObject *value = PyObject_GetAttr(wrapped, name);
-    if (value == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
-            PyErr_Clear();
-            return 0;
-        }
-        return -1;
+    PyObject *value;
+    int res = PyObject_GetOptionalAttr(wrapped, name, &value);
+    if (value != NULL) {
+        res = PyObject_SetAttr(wrapper, name, value);
+        Py_DECREF(value);
     }
-
-    int res = PyObject_SetAttr(wrapper, name, value);
-    Py_DECREF(value);
     return res;
 }
 
@@ -998,10 +1109,6 @@ cm_descr_get(PyObject *self, PyObject *obj, PyObject *type)
     }
     if (type == NULL)
         type = (PyObject *)(Py_TYPE(obj));
-    if (Py_TYPE(cm->cm_callable)->tp_descr_get != NULL) {
-        return Py_TYPE(cm->cm_callable)->tp_descr_get(cm->cm_callable, type,
-                                                      type);
-    }
     return PyMethod_New(cm->cm_callable, type);
 }
 
@@ -1024,8 +1131,8 @@ cm_init(PyObject *self, PyObject *args, PyObject *kwds)
 }
 
 static PyMemberDef cm_memberlist[] = {
-    {"__func__", T_OBJECT, offsetof(classmethod, cm_callable), READONLY},
-    {"__wrapped__", T_OBJECT, offsetof(classmethod, cm_callable), READONLY},
+    {"__func__", _Py_T_OBJECT, offsetof(classmethod, cm_callable), Py_READONLY},
+    {"__wrapped__", _Py_T_OBJECT, offsetof(classmethod, cm_callable), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -1056,7 +1163,8 @@ cm_repr(classmethod *cm)
 }
 
 PyDoc_STRVAR(classmethod_doc,
-"classmethod(function) -> method\n\
+"classmethod(function, /)\n\
+--\n\
 \n\
 Convert a function to be a class method.\n\
 \n\
@@ -1219,8 +1327,8 @@ sm_call(PyObject *callable, PyObject *args, PyObject *kwargs)
 }
 
 static PyMemberDef sm_memberlist[] = {
-    {"__func__", T_OBJECT, offsetof(staticmethod, sm_callable), READONLY},
-    {"__wrapped__", T_OBJECT, offsetof(staticmethod, sm_callable), READONLY},
+    {"__func__", _Py_T_OBJECT, offsetof(staticmethod, sm_callable), Py_READONLY},
+    {"__wrapped__", _Py_T_OBJECT, offsetof(staticmethod, sm_callable), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -1251,7 +1359,8 @@ sm_repr(staticmethod *sm)
 }
 
 PyDoc_STRVAR(staticmethod_doc,
-"staticmethod(function) -> method\n\
+"staticmethod(function, /)\n\
+--\n\
 \n\
 Convert a function to be a static method.\n\
 \n\
diff --git a/Objects/genericaliasobject.c b/Objects/genericaliasobject.c
index 888cb16edd1b46..c045d495e85526 100644
--- a/Objects/genericaliasobject.c
+++ b/Objects/genericaliasobject.c
@@ -1,9 +1,11 @@
 // types.GenericAlias -- used to represent e.g. list[int].
 
 #include "Python.h"
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 #include "pycore_object.h"
 #include "pycore_unionobject.h"   // _Py_union_type_or, _PyGenericAlias_Check
-#include "structmember.h"         // PyMemberDef
+
 
 #include <stdbool.h>
 
@@ -54,8 +56,7 @@ ga_repr_item(_PyUnicodeWriter *writer, PyObject *p)
     PyObject *qualname = NULL;
     PyObject *module = NULL;
     PyObject *r = NULL;
-    PyObject *tmp;
-    int err;
+    int rc;
 
     if (p == Py_Ellipsis) {
         // The Ellipsis object
@@ -63,28 +64,23 @@ ga_repr_item(_PyUnicodeWriter *writer, PyObject *p)
         goto done;
     }
 
-    if (_PyObject_LookupAttr(p, &_Py_ID(__origin__), &tmp) < 0) {
-        goto done;
+    if ((rc = PyObject_HasAttrWithError(p, &_Py_ID(__origin__))) > 0 &&
+        (rc = PyObject_HasAttrWithError(p, &_Py_ID(__args__))) > 0)
+    {
+        // It looks like a GenericAlias
+        goto use_repr;
     }
-    if (tmp != NULL) {
-        Py_DECREF(tmp);
-        if (_PyObject_LookupAttr(p, &_Py_ID(__args__), &tmp) < 0) {
-            goto done;
-        }
-        if (tmp != NULL) {
-            Py_DECREF(tmp);
-            // It looks like a GenericAlias
-            goto use_repr;
-        }
+    if (rc < 0) {
+        goto done;
     }
 
-    if (_PyObject_LookupAttr(p, &_Py_ID(__qualname__), &qualname) < 0) {
+    if (PyObject_GetOptionalAttr(p, &_Py_ID(__qualname__), &qualname) < 0) {
         goto done;
     }
     if (qualname == NULL) {
         goto use_repr;
     }
-    if (_PyObject_LookupAttr(p, &_Py_ID(__module__), &module) < 0) {
+    if (PyObject_GetOptionalAttr(p, &_Py_ID(__module__), &module) < 0) {
         goto done;
     }
     if (module == NULL || module == Py_None) {
@@ -112,13 +108,43 @@ ga_repr_item(_PyUnicodeWriter *writer, PyObject *p)
     Py_XDECREF(module);
     if (r == NULL) {
         // error if any of the above PyObject_Repr/PyUnicode_From* fail
-        err = -1;
+        rc = -1;
     }
     else {
-        err = _PyUnicodeWriter_WriteStr(writer, r);
+        rc = _PyUnicodeWriter_WriteStr(writer, r);
         Py_DECREF(r);
     }
-    return err;
+    return rc;
+}
+
+static int
+ga_repr_items_list(_PyUnicodeWriter *writer, PyObject *p)
+{
+    assert(PyList_CheckExact(p));
+
+    Py_ssize_t len = PyList_GET_SIZE(p);
+
+    if (_PyUnicodeWriter_WriteASCIIString(writer, "[", 1) < 0) {
+        return -1;
+    }
+
+    for (Py_ssize_t i = 0; i < len; i++) {
+        if (i > 0) {
+            if (_PyUnicodeWriter_WriteASCIIString(writer, ", ", 2) < 0) {
+                return -1;
+            }
+        }
+        PyObject *item = PyList_GET_ITEM(p, i);
+        if (ga_repr_item(writer, item) < 0) {
+            return -1;
+        }
+    }
+
+    if (_PyUnicodeWriter_WriteASCIIString(writer, "]", 1) < 0) {
+        return -1;
+    }
+
+    return 0;
 }
 
 static PyObject *
@@ -148,7 +174,13 @@ ga_repr(PyObject *self)
             }
         }
         PyObject *p = PyTuple_GET_ITEM(alias->args, i);
-        if (ga_repr_item(&writer, p) < 0) {
+        if (PyList_CheckExact(p)) {
+            // Looks like we are working with ParamSpec's list of type args:
+            if (ga_repr_items_list(&writer, p) < 0) {
+                goto error;
+            }
+        }
+        else if (ga_repr_item(&writer, p) < 0) {
             goto error;
         }
     }
@@ -216,22 +248,21 @@ _Py_make_parameters(PyObject *args)
     Py_ssize_t iparam = 0;
     for (Py_ssize_t iarg = 0; iarg < nargs; iarg++) {
         PyObject *t = PyTuple_GET_ITEM(args, iarg);
-        PyObject *subst;
         // We don't want __parameters__ descriptor of a bare Python class.
         if (PyType_Check(t)) {
             continue;
         }
-        if (_PyObject_LookupAttr(t, &_Py_ID(__typing_subst__), &subst) < 0) {
+        int rc = PyObject_HasAttrWithError(t, &_Py_ID(__typing_subst__));
+        if (rc < 0) {
             Py_DECREF(parameters);
             return NULL;
         }
-        if (subst) {
+        if (rc) {
             iparam += tuple_add(parameters, iparam, t);
-            Py_DECREF(subst);
         }
         else {
             PyObject *subparams;
-            if (_PyObject_LookupAttr(t, &_Py_ID(__parameters__),
+            if (PyObject_GetOptionalAttr(t, &_Py_ID(__parameters__),
                                      &subparams) < 0) {
                 Py_DECREF(parameters);
                 return NULL;
@@ -274,7 +305,7 @@ subs_tvars(PyObject *obj, PyObject *params,
            PyObject **argitems, Py_ssize_t nargs)
 {
     PyObject *subparams;
-    if (_PyObject_LookupAttr(obj, &_Py_ID(__parameters__), &subparams) < 0) {
+    if (PyObject_GetOptionalAttr(obj, &_Py_ID(__parameters__), &subparams) < 0) {
         return NULL;
     }
     if (subparams && PyTuple_Check(subparams) && PyTuple_GET_SIZE(subparams)) {
@@ -325,7 +356,7 @@ _is_unpacked_typevartuple(PyObject *arg)
     if (PyType_Check(arg)) { // TODO: Add test
         return 0;
     }
-    int res = _PyObject_LookupAttr(arg, &_Py_ID(__typing_is_unpacked_typevartuple__), &tmp);
+    int res = PyObject_GetOptionalAttr(arg, &_Py_ID(__typing_is_unpacked_typevartuple__), &tmp);
     if (res > 0) {
         res = PyObject_IsTrue(tmp);
         Py_DECREF(tmp);
@@ -347,7 +378,7 @@ _unpacked_tuple_args(PyObject *arg)
         return Py_NewRef(result);
     }
 
-    if (_PyObject_LookupAttr(arg, &_Py_ID(__typing_unpacked_tuple_args__), &result) > 0) {
+    if (PyObject_GetOptionalAttr(arg, &_Py_ID(__typing_unpacked_tuple_args__), &result) > 0) {
         if (result == Py_None) {
             Py_DECREF(result);
             return NULL;
@@ -412,7 +443,7 @@ _Py_subs_parameters(PyObject *self, PyObject *args, PyObject *parameters, PyObje
     for (Py_ssize_t i = 0; i < nparams; i++) {
         PyObject *param = PyTuple_GET_ITEM(parameters, i);
         PyObject *prepare, *tmp;
-        if (_PyObject_LookupAttr(param, &_Py_ID(__typing_prepare_subst__), &prepare) < 0) {
+        if (PyObject_GetOptionalAttr(param, &_Py_ID(__typing_prepare_subst__), &prepare) < 0) {
             Py_DECREF(item);
             return NULL;
         }
@@ -467,7 +498,7 @@ _Py_subs_parameters(PyObject *self, PyObject *args, PyObject *parameters, PyObje
             return NULL;
         }
         PyObject *subst;
-        if (_PyObject_LookupAttr(arg, &_Py_ID(__typing_subst__), &subst) < 0) {
+        if (PyObject_GetOptionalAttr(arg, &_Py_ID(__typing_subst__), &subst) < 0) {
             Py_DECREF(newargs);
             Py_DECREF(item);
             return NULL;
@@ -590,6 +621,7 @@ ga_vectorcall(PyObject *self, PyObject *const *args,
 
 static const char* const attr_exceptions[] = {
     "__class__",
+    "__bases__",
     "__origin__",
     "__args__",
     "__unpacked__",
@@ -746,9 +778,9 @@ static PyMethodDef ga_methods[] = {
 };
 
 static PyMemberDef ga_members[] = {
-    {"__origin__", T_OBJECT, offsetof(gaobject, origin), READONLY},
-    {"__args__", T_OBJECT, offsetof(gaobject, args), READONLY},
-    {"__unpacked__", T_BOOL, offsetof(gaobject, starred), READONLY},
+    {"__origin__", _Py_T_OBJECT, offsetof(gaobject, origin), Py_READONLY},
+    {"__args__", _Py_T_OBJECT, offsetof(gaobject, args), Py_READONLY},
+    {"__unpacked__", Py_T_BOOL, offsetof(gaobject, starred), Py_READONLY},
     {0}
 };
 
@@ -776,7 +808,7 @@ ga_unpacked_tuple_args(PyObject *self, void *unused)
 }
 
 static PyGetSetDef ga_properties[] = {
-    {"__parameters__", ga_parameters, (setter)NULL, "Type variables in the GenericAlias.", NULL},
+    {"__parameters__", ga_parameters, (setter)NULL, PyDoc_STR("Type variables in the GenericAlias."), NULL},
     {"__typing_unpacked_tuple_args__", ga_unpacked_tuple_args, (setter)NULL, NULL},
     {0}
 };
diff --git a/Objects/genobject.c b/Objects/genobject.c
index 9252c654934565..9614713883741c 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -7,12 +7,12 @@
 #include "pycore_ceval.h"         // _PyEval_EvalFrame()
 #include "pycore_frame.h"         // _PyInterpreterFrame
 #include "pycore_genobject.h"     // struct _Py_async_gen_state
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
+#include "pycore_opcode_utils.h"  // RESUME_AFTER_YIELD_FROM
 #include "pycore_pyerrors.h"      // _PyErr_ClearExcState()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "structmember.h"         // PyMemberDef
-#include "opcode.h"               // SEND
-#include "frameobject.h"          // _PyInterpreterFrame_GetLine
+
 #include "pystats.h"
 
 static PyObject *gen_close(PyGenObject *, PyObject *);
@@ -29,7 +29,7 @@ static const char *ASYNC_GEN_IGNORED_EXIT_MSG =
 static inline PyCodeObject *
 _PyGen_GetCode(PyGenObject *gen) {
     _PyInterpreterFrame *frame = (_PyInterpreterFrame *)(gen->gi_iframe);
-    return frame->f_code;
+    return _PyFrame_GetCode(frame);
 }
 
 PyCodeObject *
@@ -40,19 +40,12 @@ PyGen_GetCode(PyGenObject *gen) {
     return res;
 }
 
-static inline int
-exc_state_traverse(_PyErr_StackItem *exc_state, visitproc visit, void *arg)
-{
-    Py_VISIT(exc_state->exc_value);
-    return 0;
-}
-
 static int
 gen_traverse(PyGenObject *gen, visitproc visit, void *arg)
 {
     Py_VISIT(gen->gi_name);
     Py_VISIT(gen->gi_qualname);
-    if (gen->gi_frame_state < FRAME_CLEARED) {
+    if (gen->gi_frame_state != FRAME_CLEARED) {
         _PyInterpreterFrame *frame = (_PyInterpreterFrame *)(gen->gi_iframe);
         assert(frame->frame_obj == NULL ||
                frame->frame_obj->f_frame->owner == FRAME_OWNED_BY_GENERATOR);
@@ -63,7 +56,8 @@ gen_traverse(PyGenObject *gen, visitproc visit, void *arg)
     }
     /* No need to visit cr_origin, because it's just tuples/str/int, so can't
        participate in a reference cycle. */
-    return exc_state_traverse(&gen->gi_exc_state, visit, arg);
+    Py_VISIT(gen->gi_exc_state.exc_value);
+    return 0;
 }
 
 void
@@ -71,7 +65,7 @@ _PyGen_Finalize(PyObject *self)
 {
     PyGenObject *gen = (PyGenObject *)self;
 
-    if (gen->gi_frame_state >= FRAME_COMPLETED) {
+    if (FRAME_STATE_FINISHED(gen->gi_frame_state)) {
         /* Generator isn't paused, so no need to close */
         return;
     }
@@ -144,19 +138,21 @@ gen_dealloc(PyGenObject *gen)
            and GC_Del. */
         Py_CLEAR(((PyAsyncGenObject*)gen)->ag_origin_or_finalizer);
     }
-    if (gen->gi_frame_state < FRAME_CLEARED) {
+    if (gen->gi_frame_state != FRAME_CLEARED) {
         _PyInterpreterFrame *frame = (_PyInterpreterFrame *)gen->gi_iframe;
         gen->gi_frame_state = FRAME_CLEARED;
         frame->previous = NULL;
         _PyFrame_ClearExceptCode(frame);
+        _PyErr_ClearExcState(&gen->gi_exc_state);
     }
+    assert(gen->gi_exc_state.exc_value == NULL);
     if (_PyGen_GetCode(gen)->co_flags & CO_COROUTINE) {
         Py_CLEAR(((PyCoroObject *)gen)->cr_origin_or_finalizer);
     }
     Py_DECREF(_PyGen_GetCode(gen));
     Py_CLEAR(gen->gi_name);
     Py_CLEAR(gen->gi_qualname);
-    _PyErr_ClearExcState(&gen->gi_exc_state);
+
     PyObject_GC_Del(gen);
 }
 
@@ -166,7 +162,6 @@ gen_send_ex2(PyGenObject *gen, PyObject *arg, PyObject **presult,
 {
     PyThreadState *tstate = _PyThreadState_GET();
     _PyInterpreterFrame *frame = (_PyInterpreterFrame *)gen->gi_iframe;
-    PyObject *result;
 
     *presult = NULL;
     if (gen->gi_frame_state == FRAME_CREATED && arg && arg != Py_None) {
@@ -193,7 +188,7 @@ gen_send_ex2(PyGenObject *gen, PyObject *arg, PyObject **presult,
         PyErr_SetString(PyExc_ValueError, msg);
         return PYGEN_ERROR;
     }
-    if (gen->gi_frame_state >= FRAME_COMPLETED) {
+    if (FRAME_STATE_FINISHED(gen->gi_frame_state)) {
         if (PyCoro_CheckExact(gen) && !closing) {
             /* `gen` is an exhausted coroutine: raise an error,
                except when called from gen_close(), which should
@@ -211,10 +206,12 @@ gen_send_ex2(PyGenObject *gen, PyObject *arg, PyObject **presult,
         return PYGEN_ERROR;
     }
 
-    assert(gen->gi_frame_state < FRAME_EXECUTING);
+    assert((gen->gi_frame_state == FRAME_CREATED) ||
+           FRAME_STATE_SUSPENDED(gen->gi_frame_state));
+
     /* Push arg onto the frame's value stack */
-    result = arg ? arg : Py_None;
-    _PyFrame_StackPush(frame, Py_NewRef(result));
+    PyObject *arg_obj = arg ? arg : Py_None;
+    _PyFrame_StackPush(frame, Py_NewRef(arg_obj));
 
     _PyErr_StackItem *prev_exc_info = tstate->exc_info;
     gen->gi_exc_state.previous_item = prev_exc_info;
@@ -222,12 +219,12 @@ gen_send_ex2(PyGenObject *gen, PyObject *arg, PyObject **presult,
 
     if (exc) {
         assert(_PyErr_Occurred(tstate));
-        _PyErr_ChainStackItem(NULL);
+        _PyErr_ChainStackItem();
     }
 
     gen->gi_frame_state = FRAME_EXECUTING;
     EVAL_CALL_STAT_INC(EVAL_CALL_GENERATOR);
-    result = _PyEval_EvalFrame(tstate, frame, exc);
+    PyObject *result = _PyEval_EvalFrame(tstate, frame, exc);
     assert(tstate->exc_info == prev_exc_info);
     assert(gen->gi_exc_state.previous_item == NULL);
     assert(gen->gi_frame_state != FRAME_EXECUTING);
@@ -236,7 +233,7 @@ gen_send_ex2(PyGenObject *gen, PyObject *arg, PyObject **presult,
     /* If the generator just returned (as opposed to yielding), signal
      * that the generator is exhausted. */
     if (result) {
-        if (gen->gi_frame_state == FRAME_SUSPENDED) {
+        if (FRAME_STATE_SUSPENDED(gen->gi_frame_state)) {
             *presult = result;
             return PYGEN_NEXT;
         }
@@ -252,10 +249,7 @@ gen_send_ex2(PyGenObject *gen, PyObject *arg, PyObject **presult,
             !PyErr_ExceptionMatches(PyExc_StopAsyncIteration));
     }
 
-    /* generator can't be rerun, so release the frame */
-    /* first clean reference cycle through stored exception traceback */
-    _PyErr_ClearExcState(&gen->gi_exc_state);
-
+    assert(gen->gi_exc_state.exc_value == NULL);
     assert(gen->gi_frame_state == FRAME_CLEARED);
     *presult = result;
     return result ? PYGEN_RETURN : PYGEN_ERROR;
@@ -317,7 +311,7 @@ gen_close_iter(PyObject *yf)
     }
     else {
         PyObject *meth;
-        if (_PyObject_LookupAttr(yf, &_Py_ID(close), &meth) < 0) {
+        if (PyObject_GetOptionalAttr(yf, &_Py_ID(close), &meth) < 0) {
             PyErr_WriteUnraisable(yf);
         }
         if (meth) {
@@ -331,47 +325,43 @@ gen_close_iter(PyObject *yf)
     return 0;
 }
 
+static inline bool
+is_resume(_Py_CODEUNIT *instr)
+{
+    return (
+        instr->op.code == RESUME ||
+        instr->op.code == RESUME_CHECK ||
+        instr->op.code == INSTRUMENTED_RESUME
+    );
+}
+
 PyObject *
 _PyGen_yf(PyGenObject *gen)
 {
-    PyObject *yf = NULL;
-
-    if (gen->gi_frame_state < FRAME_CLEARED) {
+    if (gen->gi_frame_state == FRAME_SUSPENDED_YIELD_FROM) {
         _PyInterpreterFrame *frame = (_PyInterpreterFrame *)gen->gi_iframe;
-
-        if (gen->gi_frame_state == FRAME_CREATED) {
-            /* Return immediately if the frame didn't start yet. SEND
-               always come after LOAD_CONST: a code object should not start
-               with SEND */
-            assert(_PyCode_CODE(_PyGen_GetCode(gen))[0].op.code != SEND);
-            return NULL;
-        }
-        _Py_CODEUNIT next = frame->prev_instr[1];
-        if (next.op.code != RESUME || next.op.arg < 2)
-        {
-            /* Not in a yield from */
-            return NULL;
-        }
-        yf = Py_NewRef(_PyFrame_StackPeek(frame));
+        assert(is_resume(frame->instr_ptr));
+        assert((frame->instr_ptr->op.arg & RESUME_OPARG_LOCATION_MASK) >= RESUME_AFTER_YIELD_FROM);
+        return Py_NewRef(_PyFrame_StackPeek(frame));
     }
-
-    return yf;
+    return NULL;
 }
 
 static PyObject *
 gen_close(PyGenObject *gen, PyObject *args)
 {
     PyObject *retval;
-    PyObject *yf = _PyGen_yf(gen);
     int err = 0;
 
+
     if (gen->gi_frame_state == FRAME_CREATED) {
         gen->gi_frame_state = FRAME_COMPLETED;
         Py_RETURN_NONE;
     }
-    if (gen->gi_frame_state >= FRAME_COMPLETED) {
+    if (FRAME_STATE_FINISHED(gen->gi_frame_state)) {
         Py_RETURN_NONE;
     }
+    PyObject *yf = _PyGen_yf(gen);
     if (yf) {
         PyFrameState state = gen->gi_frame_state;
         gen->gi_frame_state = FRAME_EXECUTING;
@@ -380,16 +370,15 @@ gen_close(PyGenObject *gen, PyObject *args)
         Py_DECREF(yf);
     }
     _PyInterpreterFrame *frame = (_PyInterpreterFrame *)gen->gi_iframe;
-    /* It is possible for the previous instruction to not be a
-     * YIELD_VALUE if the debugger has changed the lineno. */
-    if (err == 0 && frame->prev_instr[0].op.code == YIELD_VALUE) {
-        assert(frame->prev_instr[1].op.code == RESUME);
-        int exception_handler_depth = frame->prev_instr[0].op.code;
-        assert(exception_handler_depth > 0);
+    if (is_resume(frame->instr_ptr)) {
         /* We can safely ignore the outermost try block
-         * as it automatically generated to handle
+         * as it is automatically generated to handle
          * StopIteration. */
-        if (exception_handler_depth == 1) {
+        int oparg = frame->instr_ptr->op.arg;
+        if (oparg & RESUME_OPARG_DEPTH1_MASK) {
+            // RESUME after YIELD_VALUE and exception depth is 1
+            assert((oparg & RESUME_OPARG_LOCATION_MASK) != RESUME_AT_FUNC_START);
+            gen->gi_frame_state = FRAME_COMPLETED;
             Py_RETURN_NONE;
         }
     }
@@ -408,11 +397,16 @@ gen_close(PyGenObject *gen, PyObject *args)
         PyErr_SetString(PyExc_RuntimeError, msg);
         return NULL;
     }
-    if (PyErr_ExceptionMatches(PyExc_StopIteration)
-        || PyErr_ExceptionMatches(PyExc_GeneratorExit)) {
-        PyErr_Clear();          /* ignore these errors */
+    assert(PyErr_Occurred());
+    if (PyErr_ExceptionMatches(PyExc_GeneratorExit)) {
+        PyErr_Clear();          /* ignore this error */
         Py_RETURN_NONE;
     }
+    /* if the generator returned a value while closing, StopIteration was
+     * raised in gen_send_ex() above; retrieve and return the value here */
+    if (_PyGen_FetchStopIterationValue(&retval) == 0) {
+        return retval;
+    }
     return NULL;
 }
 
@@ -460,9 +454,9 @@ _gen_throw(PyGenObject *gen, int close_on_genexit,
                will be reported correctly to the user. */
             /* XXX We should probably be updating the current frame
                somewhere in ceval.c. */
-            _PyInterpreterFrame *prev = tstate->cframe->current_frame;
+            _PyInterpreterFrame *prev = tstate->current_frame;
             frame->previous = prev;
-            tstate->cframe->current_frame = frame;
+            tstate->current_frame = frame;
             /* Close the generator that we are currently iterating with
                'yield from' or awaiting on with 'await'. */
             PyFrameState state = gen->gi_frame_state;
@@ -470,12 +464,12 @@ _gen_throw(PyGenObject *gen, int close_on_genexit,
             ret = _gen_throw((PyGenObject *)yf, close_on_genexit,
                              typ, val, tb);
             gen->gi_frame_state = state;
-            tstate->cframe->current_frame = prev;
+            tstate->current_frame = prev;
             frame->previous = NULL;
         } else {
             /* `yf` is an iterator or a coroutine-like object. */
             PyObject *meth;
-            if (_PyObject_LookupAttr(yf, &_Py_ID(throw), &meth) < 0) {
+            if (PyObject_GetOptionalAttr(yf, &_Py_ID(throw), &meth) < 0) {
                 Py_DECREF(yf);
                 return NULL;
             }
@@ -729,7 +723,7 @@ gen_getrunning(PyGenObject *gen, void *Py_UNUSED(ignored))
 static PyObject *
 gen_getsuspended(PyGenObject *gen, void *Py_UNUSED(ignored))
 {
-    return PyBool_FromLong(gen->gi_frame_state == FRAME_SUSPENDED);
+    return PyBool_FromLong(FRAME_STATE_SUSPENDED(gen->gi_frame_state));
 }
 
 static PyObject *
@@ -738,7 +732,7 @@ _gen_getframe(PyGenObject *gen, const char *const name)
     if (PySys_Audit("object.__getattr__", "Os", gen, name) < 0) {
         return NULL;
     }
-    if (gen->gi_frame_state == FRAME_CLEARED) {
+    if (FRAME_STATE_FINISHED(gen->gi_frame_state)) {
         Py_RETURN_NONE;
     }
     return _Py_XNewRef((PyObject *)_PyFrame_GetFrameObject((_PyInterpreterFrame *)gen->gi_iframe));
@@ -922,7 +916,7 @@ _Py_MakeCoro(PyFunctionObject *func)
     if (origin_depth == 0) {
         ((PyCoroObject *)coro)->cr_origin_or_finalizer = NULL;
     } else {
-        _PyInterpreterFrame *frame = tstate->cframe->current_frame;
+        _PyInterpreterFrame *frame = tstate->current_frame;
         assert(frame);
         assert(_PyFrame_IsIncomplete(frame));
         frame = _PyFrame_GetFirstComplete(frame->previous);
@@ -940,7 +934,7 @@ static PyObject *
 gen_new_with_qualname(PyTypeObject *type, PyFrameObject *f,
                       PyObject *name, PyObject *qualname)
 {
-    PyCodeObject *code = f->f_frame->f_code;
+    PyCodeObject *code = _PyFrame_GetCode(f->f_frame);
     int size = code->co_nlocalsplus + code->co_stacksize;
     PyGenObject *gen = PyObject_GC_NewVar(PyGenObject, type, size);
     if (gen == NULL) {
@@ -1084,7 +1078,7 @@ coro_get_cr_await(PyCoroObject *coro, void *Py_UNUSED(ignored))
 static PyObject *
 cr_getsuspended(PyCoroObject *coro, void *Py_UNUSED(ignored))
 {
-    if (coro->cr_frame_state == FRAME_SUSPENDED) {
+    if (FRAME_STATE_SUSPENDED(coro->cr_frame_state)) {
         Py_RETURN_TRUE;
     }
     Py_RETURN_FALSE;
@@ -1127,7 +1121,7 @@ static PyGetSetDef coro_getsetlist[] = {
 };
 
 static PyMemberDef coro_memberlist[] = {
-    {"cr_origin",    T_OBJECT, offsetof(PyCoroObject, cr_origin_or_finalizer),   READONLY},
+    {"cr_origin",    _Py_T_OBJECT, offsetof(PyCoroObject, cr_origin_or_finalizer),   Py_READONLY},
     {NULL}      /* Sentinel */
 };
 
@@ -1322,7 +1316,7 @@ compute_cr_origin(int origin_depth, _PyInterpreterFrame *current_frame)
     }
     frame = current_frame;
     for (int i = 0; i < frame_count; ++i) {
-        PyCodeObject *code = frame->f_code;
+        PyCodeObject *code = _PyFrame_GetCode(frame);
         int line = PyUnstable_InterpreterFrame_GetLine(frame);
         PyObject *frameinfo = Py_BuildValue("OiO", code->co_filename, line,
                                             code->co_name);
@@ -1521,7 +1515,7 @@ ag_getcode(PyGenObject *gen, void *Py_UNUSED(ignored))
 static PyObject *
 ag_getsuspended(PyAsyncGenObject *ag, void *Py_UNUSED(ignored))
 {
-    if (ag->ag_frame_state == FRAME_SUSPENDED) {
+    if (FRAME_STATE_SUSPENDED(ag->ag_frame_state)) {
         Py_RETURN_TRUE;
     }
     Py_RETURN_FALSE;
@@ -1541,8 +1535,8 @@ static PyGetSetDef async_gen_getsetlist[] = {
 };
 
 static PyMemberDef async_gen_memberlist[] = {
-    {"ag_running", T_BOOL,   offsetof(PyAsyncGenObject, ag_running_async),
-        READONLY},
+    {"ag_running", Py_T_BOOL,   offsetof(PyAsyncGenObject, ag_running_async),
+        Py_READONLY},
     {NULL}      /* Sentinel */
 };
 
@@ -1730,6 +1724,10 @@ async_gen_unwrap_value(PyAsyncGenObject *gen, PyObject *result)
 static void
 async_gen_asend_dealloc(PyAsyncGenASend *o)
 {
+    if (PyObject_CallFinalizerFromDealloc((PyObject *)o)) {
+        return;
+    }
+
     _PyObject_GC_UNTRACK((PyObject *)o);
     Py_CLEAR(o->ags_gen);
     Py_CLEAR(o->ags_sendval);
@@ -1834,6 +1832,13 @@ async_gen_asend_close(PyAsyncGenASend *o, PyObject *args)
     Py_RETURN_NONE;
 }
 
+static void
+async_gen_asend_finalize(PyAsyncGenASend *o)
+{
+    if (o->ags_state == AWAITABLE_STATE_INIT) {
+        _PyErr_WarnUnawaitedAgenMethod(o->ags_gen, &_Py_ID(asend));
+    }
+}
 
 static PyMethodDef async_gen_asend_methods[] = {
     {"send", (PyCFunction)async_gen_asend_send, METH_O, send_doc},
@@ -1891,6 +1896,7 @@ PyTypeObject _PyAsyncGenASend_Type = {
     0,                                          /* tp_init */
     0,                                          /* tp_alloc */
     0,                                          /* tp_new */
+    .tp_finalize = (destructor)async_gen_asend_finalize,
 };
 
 
@@ -2048,6 +2054,10 @@ _PyAsyncGenValueWrapperNew(PyThreadState *tstate, PyObject *val)
 static void
 async_gen_athrow_dealloc(PyAsyncGenAThrow *o)
 {
+    if (PyObject_CallFinalizerFromDealloc((PyObject *)o)) {
+        return;
+    }
+
     _PyObject_GC_UNTRACK((PyObject *)o);
     Py_CLEAR(o->agt_gen);
     Py_CLEAR(o->agt_args);
@@ -2077,7 +2087,7 @@ async_gen_athrow_send(PyAsyncGenAThrow *o, PyObject *arg)
         return NULL;
     }
 
-    if (gen->gi_frame_state >= FRAME_COMPLETED) {
+    if (FRAME_STATE_FINISHED(gen->gi_frame_state)) {
         o->agt_state = AWAITABLE_STATE_CLOSED;
         PyErr_SetNone(PyExc_StopIteration);
         return NULL;
@@ -2251,6 +2261,15 @@ async_gen_athrow_close(PyAsyncGenAThrow *o, PyObject *args)
 }
 
 
+static void
+async_gen_athrow_finalize(PyAsyncGenAThrow *o)
+{
+    if (o->agt_state == AWAITABLE_STATE_INIT) {
+        PyObject *method = o->agt_args ? &_Py_ID(athrow) : &_Py_ID(aclose);
+        _PyErr_WarnUnawaitedAgenMethod(o->agt_gen, method);
+    }
+}
+
 static PyMethodDef async_gen_athrow_methods[] = {
     {"send", (PyCFunction)async_gen_athrow_send, METH_O, send_doc},
     {"throw", _PyCFunction_CAST(async_gen_athrow_throw),
@@ -2308,6 +2327,7 @@ PyTypeObject _PyAsyncGenAThrow_Type = {
     0,                                          /* tp_init */
     0,                                          /* tp_alloc */
     0,                                          /* tp_new */
+    .tp_finalize = (destructor)async_gen_athrow_finalize,
 };
 
 
diff --git a/Objects/interpreteridobject.c b/Objects/interpreteridobject.c
index 7b3e31beded594..16e27b64c0c9c2 100644
--- a/Objects/interpreteridobject.c
+++ b/Objects/interpreteridobject.c
@@ -3,7 +3,7 @@
 #include "Python.h"
 #include "pycore_abstract.h"   // _PyIndex_Check()
 #include "pycore_interp.h"     // _PyInterpreterState_LookUpID()
-#include "pycore_interpreteridobject.h"
+#include "interpreteridobject.h"
 
 
 typedef struct interpid {
@@ -46,7 +46,7 @@ static int
 interp_id_converter(PyObject *arg, void *ptr)
 {
     int64_t id;
-    if (PyObject_TypeCheck(arg, &_PyInterpreterID_Type)) {
+    if (PyObject_TypeCheck(arg, &PyInterpreterID_Type)) {
         id = ((interpid *)arg)->id;
     }
     else if (_PyIndex_Check(arg)) {
@@ -183,13 +183,13 @@ interpid_richcompare(PyObject *self, PyObject *other, int op)
         Py_RETURN_NOTIMPLEMENTED;
     }
 
-    if (!PyObject_TypeCheck(self, &_PyInterpreterID_Type)) {
+    if (!PyObject_TypeCheck(self, &PyInterpreterID_Type)) {
         Py_RETURN_NOTIMPLEMENTED;
     }
 
     interpid *id = (interpid *)self;
     int equal;
-    if (PyObject_TypeCheck(other, &_PyInterpreterID_Type)) {
+    if (PyObject_TypeCheck(other, &PyInterpreterID_Type)) {
         interpid *otherid = (interpid *)other;
         equal = (id->id == otherid->id);
     }
@@ -224,7 +224,7 @@ interpid_richcompare(PyObject *self, PyObject *other, int op)
 PyDoc_STRVAR(interpid_doc,
 "A interpreter ID identifies a interpreter and may be used as an int.");
 
-PyTypeObject _PyInterpreterID_Type = {
+PyTypeObject PyInterpreterID_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     "InterpreterID",   /* tp_name */
     sizeof(interpid),               /* tp_basicsize */
@@ -265,13 +265,13 @@ PyTypeObject _PyInterpreterID_Type = {
     interpid_new,                   /* tp_new */
 };
 
-PyObject *_PyInterpreterID_New(int64_t id)
+PyObject *PyInterpreterID_New(int64_t id)
 {
-    return (PyObject *)newinterpid(&_PyInterpreterID_Type, id, 0);
+    return (PyObject *)newinterpid(&PyInterpreterID_Type, id, 0);
 }
 
 PyObject *
-_PyInterpreterState_GetIDObject(PyInterpreterState *interp)
+PyInterpreterState_GetIDObject(PyInterpreterState *interp)
 {
     if (_PyInterpreterState_IDInitref(interp) != 0) {
         return NULL;
@@ -280,11 +280,11 @@ _PyInterpreterState_GetIDObject(PyInterpreterState *interp)
     if (id < 0) {
         return NULL;
     }
-    return (PyObject *)newinterpid(&_PyInterpreterID_Type, id, 0);
+    return (PyObject *)newinterpid(&PyInterpreterID_Type, id, 0);
 }
 
 PyInterpreterState *
-_PyInterpreterID_LookUp(PyObject *requested_id)
+PyInterpreterID_LookUp(PyObject *requested_id)
 {
     int64_t id;
     if (!interp_id_converter(requested_id, &id)) {
diff --git a/Objects/iterobject.c b/Objects/iterobject.c
index 7cb17a6ca4ab56..135ced9ea1f268 100644
--- a/Objects/iterobject.c
+++ b/Objects/iterobject.c
@@ -1,7 +1,9 @@
 /* Iterator objects */
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyObject_HasLen()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
 
 typedef struct {
diff --git a/Objects/listobject.c b/Objects/listobject.c
index f1edfb3a9a039d..2d04218439bd20 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2,10 +2,12 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_interp.h"        // PyInterpreterState.list
 #include "pycore_list.h"          // struct _Py_list_state, _PyListIterObject
 #include "pycore_long.h"          // _PyLong_DigitCount
-#include "pycore_object.h"        // _PyObject_GC_TRACK()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
+#include "pycore_object.h"        // _PyObject_GC_TRACK(), _PyDebugAllocatorStats()
 #include "pycore_tuple.h"         // _PyTuple_FromArray()
 #include <stddef.h>
 
@@ -590,26 +592,33 @@ list_repeat(PyListObject *a, Py_ssize_t n)
     return (PyObject *) np;
 }
 
-static int
-_list_clear(PyListObject *a)
+static void
+list_clear(PyListObject *a)
 {
-    Py_ssize_t i;
-    PyObject **item = a->ob_item;
-    if (item != NULL) {
-        /* Because XDECREF can recursively invoke operations on
-           this list, we make it empty first. */
-        i = Py_SIZE(a);
-        Py_SET_SIZE(a, 0);
-        a->ob_item = NULL;
-        a->allocated = 0;
-        while (--i >= 0) {
-            Py_XDECREF(item[i]);
-        }
-        PyMem_Free(item);
+    PyObject **items = a->ob_item;
+    if (items == NULL) {
+        return;
+    }
+
+    /* Because XDECREF can recursively invoke operations on
+       this list, we make it empty first. */
+    Py_ssize_t i = Py_SIZE(a);
+    Py_SET_SIZE(a, 0);
+    a->ob_item = NULL;
+    a->allocated = 0;
+    while (--i >= 0) {
+        Py_XDECREF(items[i]);
     }
-    /* Never fails; the return value can be ignored.
-       Note that there is no guarantee that the list is actually empty
-       at this point, because XDECREF may have populated it again! */
+    PyMem_Free(items);
+
+    // Note that there is no guarantee that the list is actually empty
+    // at this point, because XDECREF may have populated it indirectly again!
+}
+
+static int
+list_clear_slot(PyListObject *self)
+{
+    list_clear(self);
     return 0;
 }
 
@@ -673,7 +682,8 @@ list_ass_slice(PyListObject *a, Py_ssize_t ilow, Py_ssize_t ihigh, PyObject *v)
     d = n - norig;
     if (Py_SIZE(a) + d == 0) {
         Py_XDECREF(v_as_SF);
-        return _list_clear(a);
+        list_clear(a);
+        return 0;
     }
     item = a->ob_item;
     /* recycle the items that we are about to remove */
@@ -743,7 +753,7 @@ list_inplace_repeat(PyListObject *self, Py_ssize_t n)
     }
 
     if (n < 1) {
-        (void)_list_clear(self);
+        list_clear(self);
         return Py_NewRef(self);
     }
 
@@ -799,16 +809,16 @@ list_insert_impl(PyListObject *self, Py_ssize_t index, PyObject *object)
 }
 
 /*[clinic input]
-list.clear
+list.clear as py_list_clear
 
 Remove all items from list.
 [clinic start generated code]*/
 
 static PyObject *
-list_clear_impl(PyListObject *self)
-/*[clinic end generated code: output=67a1896c01f74362 input=ca3c1646856742f6]*/
+py_list_clear_impl(PyListObject *self)
+/*[clinic end generated code: output=83726743807e3518 input=378711e10f545c53]*/
 {
-    _list_clear(self);
+    list_clear(self);
     Py_RETURN_NONE;
 }
 
@@ -844,83 +854,61 @@ list_append(PyListObject *self, PyObject *object)
     Py_RETURN_NONE;
 }
 
-/*[clinic input]
-list.extend
-
-     iterable: object
-     /
-
-Extend list by appending elements from the iterable.
-[clinic start generated code]*/
-
-static PyObject *
-list_extend(PyListObject *self, PyObject *iterable)
-/*[clinic end generated code: output=630fb3bca0c8e789 input=9ec5ba3a81be3a4d]*/
+static int
+list_extend_fast(PyListObject *self, PyObject *iterable)
 {
-    PyObject *it;      /* iter(v) */
-    Py_ssize_t m;                  /* size of self */
-    Py_ssize_t n;                  /* guess for size of iterable */
-    Py_ssize_t i;
-    PyObject *(*iternext)(PyObject *);
+    Py_ssize_t n = PySequence_Fast_GET_SIZE(iterable);
+    if (n == 0) {
+        /* short circuit when iterable is empty */
+        return 0;
+    }
 
-    /* Special cases:
-       1) lists and tuples which can use PySequence_Fast ops
-       2) extending self to self requires making a copy first
-    */
-    if (PyList_CheckExact(iterable) || PyTuple_CheckExact(iterable) ||
-                (PyObject *)self == iterable) {
-        PyObject **src, **dest;
-        iterable = PySequence_Fast(iterable, "argument must be iterable");
-        if (!iterable)
-            return NULL;
-        n = PySequence_Fast_GET_SIZE(iterable);
-        if (n == 0) {
-            /* short circuit when iterable is empty */
-            Py_DECREF(iterable);
-            Py_RETURN_NONE;
-        }
-        m = Py_SIZE(self);
-        /* It should not be possible to allocate a list large enough to cause
-        an overflow on any relevant platform */
-        assert(m < PY_SSIZE_T_MAX - n);
-        if (self->ob_item == NULL) {
-            if (list_preallocate_exact(self, n) < 0) {
-                return NULL;
-            }
-            Py_SET_SIZE(self, n);
-        }
-        else if (list_resize(self, m + n) < 0) {
-            Py_DECREF(iterable);
-            return NULL;
-        }
-        /* note that we may still have self == iterable here for the
-         * situation a.extend(a), but the following code works
-         * in that case too.  Just make sure to resize self
-         * before calling PySequence_Fast_ITEMS.
-         */
-        /* populate the end of self with iterable's items */
-        src = PySequence_Fast_ITEMS(iterable);
-        dest = self->ob_item + m;
-        for (i = 0; i < n; i++) {
-            PyObject *o = src[i];
-            dest[i] = Py_NewRef(o);
+    Py_ssize_t m = Py_SIZE(self);
+    // It should not be possible to allocate a list large enough to cause
+    // an overflow on any relevant platform.
+    assert(m < PY_SSIZE_T_MAX - n);
+    if (self->ob_item == NULL) {
+        if (list_preallocate_exact(self, n) < 0) {
+            return -1;
         }
-        Py_DECREF(iterable);
-        Py_RETURN_NONE;
+        Py_SET_SIZE(self, n);
+    }
+    else if (list_resize(self, m + n) < 0) {
+        return -1;
     }
 
-    it = PyObject_GetIter(iterable);
-    if (it == NULL)
-        return NULL;
-    iternext = *Py_TYPE(it)->tp_iternext;
+    // note that we may still have self == iterable here for the
+    // situation a.extend(a), but the following code works
+    // in that case too.  Just make sure to resize self
+    // before calling PySequence_Fast_ITEMS.
+    //
+    // populate the end of self with iterable's items.
+    PyObject **src = PySequence_Fast_ITEMS(iterable);
+    PyObject **dest = self->ob_item + m;
+    for (Py_ssize_t i = 0; i < n; i++) {
+        PyObject *o = src[i];
+        dest[i] = Py_NewRef(o);
+    }
+    return 0;
+}
+
+static int
+list_extend_iter(PyListObject *self, PyObject *iterable)
+{
+    PyObject *it = PyObject_GetIter(iterable);
+    if (it == NULL) {
+        return -1;
+    }
+    PyObject *(*iternext)(PyObject *) = *Py_TYPE(it)->tp_iternext;
 
     /* Guess a result list size. */
-    n = PyObject_LengthHint(iterable, 8);
+    Py_ssize_t n = PyObject_LengthHint(iterable, 8);
     if (n < 0) {
         Py_DECREF(it);
-        return NULL;
+        return -1;
     }
-    m = Py_SIZE(self);
+
+    Py_ssize_t m = Py_SIZE(self);
     if (m > PY_SSIZE_T_MAX - n) {
         /* m + n overflowed; on the chance that n lied, and there really
          * is enough room, ignore it.  If n was telling the truth, we'll
@@ -933,8 +921,10 @@ list_extend(PyListObject *self, PyObject *iterable)
     }
     else {
         /* Make room. */
-        if (list_resize(self, m + n) < 0)
+        if (list_resize(self, m + n) < 0) {
             goto error;
+        }
+
         /* Make the list sane again. */
         Py_SET_SIZE(self, m);
     }
@@ -951,10 +941,11 @@ list_extend(PyListObject *self, PyObject *iterable)
             }
             break;
         }
+
         if (Py_SIZE(self) < self->allocated) {
-            /* steals ref */
-            PyList_SET_ITEM(self, Py_SIZE(self), item);
-            Py_SET_SIZE(self, Py_SIZE(self) + 1);
+            Py_ssize_t len = Py_SIZE(self);
+            PyList_SET_ITEM(self, len, item);  // steals item ref
+            Py_SET_SIZE(self, len + 1);
         }
         else {
             if (_PyList_AppendTakeRef(self, item) < 0)
@@ -969,28 +960,95 @@ list_extend(PyListObject *self, PyObject *iterable)
     }
 
     Py_DECREF(it);
-    Py_RETURN_NONE;
+    return 0;
 
   error:
     Py_DECREF(it);
-    return NULL;
+    return -1;
+}
+
+
+static int
+list_extend(PyListObject *self, PyObject *iterable)
+{
+    // Special cases:
+    // 1) lists and tuples which can use PySequence_Fast ops
+    // 2) extending self to self requires making a copy first
+    if (PyList_CheckExact(iterable)
+        || PyTuple_CheckExact(iterable)
+        || (PyObject *)self == iterable)
+    {
+        iterable = PySequence_Fast(iterable, "argument must be iterable");
+        if (!iterable) {
+            return -1;
+        }
+
+        int res = list_extend_fast(self, iterable);
+        Py_DECREF(iterable);
+        return res;
+    }
+    else {
+        return list_extend_iter(self, iterable);
+    }
 }
 
+
 PyObject *
 _PyList_Extend(PyListObject *self, PyObject *iterable)
 {
-    return list_extend(self, iterable);
+    if (list_extend(self, iterable) < 0) {
+        return NULL;
+    }
+    Py_RETURN_NONE;
 }
 
+
+/*[clinic input]
+list.extend as py_list_extend
+
+     iterable: object
+     /
+
+Extend list by appending elements from the iterable.
+[clinic start generated code]*/
+
 static PyObject *
-list_inplace_concat(PyListObject *self, PyObject *other)
+py_list_extend(PyListObject *self, PyObject *iterable)
+/*[clinic end generated code: output=b8e0bff0ceae2abd input=9a8376a8633ed3ba]*/
 {
-    PyObject *result;
+    return _PyList_Extend(self, iterable);
+}
 
-    result = list_extend(self, other);
-    if (result == NULL)
-        return result;
-    Py_DECREF(result);
+
+int
+PyList_Extend(PyObject *self, PyObject *iterable)
+{
+    if (!PyList_Check(self)) {
+        PyErr_BadInternalCall();
+        return -1;
+    }
+    return list_extend((PyListObject*)self, iterable);
+}
+
+
+int
+PyList_Clear(PyObject *self)
+{
+    if (!PyList_Check(self)) {
+        PyErr_BadInternalCall();
+        return -1;
+    }
+    list_clear((PyListObject*)self);
+    return 0;
+}
+
+
+static PyObject *
+list_inplace_concat(PyListObject *self, PyObject *other)
+{
+    if (list_extend(self, other) < 0) {
+        return NULL;
+    }
     return Py_NewRef(self);
 }
 
@@ -1029,7 +1087,8 @@ list_pop_impl(PyListObject *self, Py_ssize_t index)
     const Py_ssize_t size_after_pop = Py_SIZE(self) - 1;
     if (size_after_pop == 0) {
         Py_INCREF(v);
-        status = _list_clear(self);
+        list_clear(self);
+        status = 0;
     }
     else {
         if ((size_after_pop - index) > 0) {
@@ -2498,7 +2557,7 @@ list_sort_impl(PyListObject *self, PyObject *keyfunc, int reverse)
     self->ob_item = saved_ob_item;
     self->allocated = saved_allocated;
     if (final_ob_item != NULL) {
-        /* we cannot use _list_clear() for this because it does not
+        /* we cannot use list_clear() for this because it does not
            guarantee that the list is really empty when it returns */
         while (--i >= 0) {
             Py_XDECREF(final_ob_item[i]);
@@ -2692,7 +2751,7 @@ list_remove(PyListObject *self, PyObject *value)
         else if (cmp < 0)
             return NULL;
     }
-    PyErr_SetString(PyExc_ValueError, "list.remove(x): x not in list");
+    PyErr_Format(PyExc_ValueError, "%R is not in list", value);
     return NULL;
 }
 
@@ -2786,13 +2845,12 @@ list___init___impl(PyListObject *self, PyObject *iterable)
 
     /* Empty previous contents */
     if (self->ob_item != NULL) {
-        (void)_list_clear(self);
+        list_clear(self);
     }
     if (iterable != NULL) {
-        PyObject *rv = list_extend(self, iterable);
-        if (rv == NULL)
+        if (list_extend(self, iterable) < 0) {
             return -1;
-        Py_DECREF(rv);
+        }
     }
     return 0;
 }
@@ -2846,11 +2904,11 @@ static PyMethodDef list_methods[] = {
      PyDoc_STR("__getitem__($self, index, /)\n--\n\nReturn self[index].")},
     LIST___REVERSED___METHODDEF
     LIST___SIZEOF___METHODDEF
-    LIST_CLEAR_METHODDEF
+    PY_LIST_CLEAR_METHODDEF
     LIST_COPY_METHODDEF
     LIST_APPEND_METHODDEF
     LIST_INSERT_METHODDEF
-    LIST_EXTEND_METHODDEF
+    PY_LIST_EXTEND_METHODDEF
     LIST_POP_METHODDEF
     LIST_REMOVE_METHODDEF
     LIST_INDEX_METHODDEF
@@ -3121,7 +3179,7 @@ PyTypeObject PyList_Type = {
         _Py_TPFLAGS_MATCH_SELF | Py_TPFLAGS_SEQUENCE,  /* tp_flags */
     list___init____doc__,                       /* tp_doc */
     (traverseproc)list_traverse,                /* tp_traverse */
-    (inquiry)_list_clear,                       /* tp_clear */
+    (inquiry)list_clear_slot,                   /* tp_clear */
     list_richcompare,                           /* tp_richcompare */
     0,                                          /* tp_weaklistoffset */
     list_iter,                                  /* tp_iter */
diff --git a/Objects/lnotab_notes.txt b/Objects/lnotab_notes.txt
index 362b87a86a481f..d45d09d4ab9a50 100644
--- a/Objects/lnotab_notes.txt
+++ b/Objects/lnotab_notes.txt
@@ -1,4 +1,7 @@
-Description of the internal format of the line number table
+Description of the internal format of the line number table in Python 3.10
+and earlier.
+
+(For 3.11 onwards, see Objects/locations.md)
 
 Conceptually, the line number table consists of a sequence of triples:
     start-offset (inclusive), end-offset (exclusive), line-number.
diff --git a/Objects/longobject.c b/Objects/longobject.c
index 853e934e2107ea..fae70dd13bb18a 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -5,15 +5,14 @@
 #include "Python.h"
 #include "pycore_bitutils.h"      // _Py_popcount32()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_call.h"          // _PyObject_MakeTpCall
 #include "pycore_long.h"          // _Py_SmallInts
 #include "pycore_object.h"        // _PyObject_Init()
 #include "pycore_runtime.h"       // _PY_NSMALLPOSINTS
 #include "pycore_structseq.h"     // _PyStructSequence_FiniBuiltin()
 
-#include <ctype.h>
-#include <float.h>
-#include <stddef.h>
-#include <stdlib.h>               // abs()
+#include <float.h>                // DBL_MANT_DIG
+#include <stddef.h>               // offsetof
 
 #include "clinic/longobject.c.h"
 /*[clinic input]
@@ -163,6 +162,9 @@ _PyLong_New(Py_ssize_t size)
     }
     _PyLong_SetSignAndDigitCount(result, size != 0, size);
     _PyObject_Init((PyObject*)result, &PyLong_Type);
+    /* The digit has to be initialized explicitly to avoid
+     * use-of-uninitialized-value. */
+    result->long_value.ob_digit[0] = 0;
     return result;
 }
 
@@ -171,7 +173,7 @@ _PyLong_FromDigits(int negative, Py_ssize_t digit_count, digit *digits)
 {
     assert(digit_count >= 0);
     if (digit_count == 0) {
-        return (PyLongObject *)Py_NewRef(_PyLong_GetZero());
+        return (PyLongObject *)_PyLong_GetZero();
     }
     PyLongObject *result = _PyLong_New(digit_count);
     if (result == NULL) {
@@ -546,7 +548,7 @@ PyLong_AsLong(PyObject *obj)
    method.  Return -1 and set an error if overflow occurs. */
 
 int
-_PyLong_AsInt(PyObject *obj)
+PyLong_AsInt(PyObject *obj)
 {
     int overflow;
     long result = PyLong_AsLongAndOverflow(obj, &overflow);
@@ -2854,8 +2856,7 @@ long_divrem(PyLongObject *a, PyLongObject *b,
         if (*prem == NULL) {
             return -1;
         }
-        PyObject *zero = _PyLong_GetZero();
-        *pdiv = (PyLongObject*)Py_NewRef(zero);
+        *pdiv = (PyLongObject*)_PyLong_GetZero();
         return 0;
     }
     if (size_b == 1) {
@@ -6152,6 +6153,29 @@ int_is_integer_impl(PyObject *self)
     Py_RETURN_TRUE;
 }
 
+static PyObject *
+long_vectorcall(PyObject *type, PyObject * const*args,
+                 size_t nargsf, PyObject *kwnames)
+{
+    Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+    if (kwnames != NULL) {
+        PyThreadState *tstate = PyThreadState_GET();
+        return _PyObject_MakeTpCall(tstate, type, args, nargs, kwnames);
+    }
+    switch (nargs) {
+        case 0:
+            return _PyLong_GetZero();
+        case 1:
+            return PyNumber_Long(args[0]);
+        case 2:
+            return long_new_impl(_PyType_CAST(type), args[0], args[1]);
+        default:
+            return PyErr_Format(PyExc_TypeError,
+                                "int expected at most 2 argument%s, got %zd",
+                                nargs);
+    }
+}
+
 static PyMethodDef long_methods[] = {
     {"conjugate",       long_long_meth, METH_NOARGS,
      "Returns self, the complex conjugate of any int."},
@@ -6289,6 +6313,7 @@ PyTypeObject PyLong_Type = {
     0,                                          /* tp_alloc */
     long_new,                                   /* tp_new */
     PyObject_Free,                              /* tp_free */
+    .tp_vectorcall = long_vectorcall,
 };
 
 static PyTypeObject Int_InfoType;
@@ -6366,3 +6391,17 @@ _PyLong_FiniTypes(PyInterpreterState *interp)
 {
     _PyStructSequence_FiniBuiltin(interp, &Int_InfoType);
 }
+
+#undef PyUnstable_Long_IsCompact
+
+int
+PyUnstable_Long_IsCompact(const PyLongObject* op) {
+    return _PyLong_IsCompact(op);
+}
+
+#undef PyUnstable_Long_CompactValue
+
+Py_ssize_t
+PyUnstable_Long_CompactValue(const PyLongObject* op) {
+    return _PyLong_CompactValue(op);
+}
diff --git a/Objects/memoryobject.c b/Objects/memoryobject.c
index b0168044d9f85a..bcdd2ff0ceafe6 100644
--- a/Objects/memoryobject.c
+++ b/Objects/memoryobject.c
@@ -12,6 +12,7 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
+#include "pycore_memoryobject.h"  // _PyManagedBuffer_Type
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
 #include "pycore_strhex.h"        // _Py_strhex_with_sep()
 #include <stddef.h>               // offsetof()
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index 51752dec3dd08c..b40b2821c3880d 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -2,11 +2,12 @@
 /* Method object implementation */
 
 #include "Python.h"
+#include "pycore_call.h"          // _Py_CheckFunctionResult()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCallTstate()
 #include "pycore_object.h"
 #include "pycore_pyerrors.h"
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "structmember.h"         // PyMemberDef
+
 
 /* undefine macro trampoline to PyCFunction_NewEx */
 #undef PyCFunction_New
@@ -191,7 +192,9 @@ static PyMethodDef meth_methods[] = {
 static PyObject *
 meth_get__text_signature__(PyCFunctionObject *m, void *closure)
 {
-    return _PyType_GetTextSignatureFromInternalDoc(m->m_ml->ml_name, m->m_ml->ml_doc);
+    return _PyType_GetTextSignatureFromInternalDoc(m->m_ml->ml_name,
+                                                   m->m_ml->ml_doc,
+                                                   m->m_ml->ml_flags);
 }
 
 static PyObject *
@@ -272,7 +275,7 @@ static PyGetSetDef meth_getsets [] = {
 #define OFF(x) offsetof(PyCFunctionObject, x)
 
 static PyMemberDef meth_members[] = {
-    {"__module__",    T_OBJECT,     OFF(m_module), 0},
+    {"__module__",    _Py_T_OBJECT,     OFF(m_module), 0},
     {NULL}
 };
 
@@ -550,10 +553,3 @@ cfunction_call(PyObject *func, PyObject *args, PyObject *kwargs)
     return _Py_CheckFunctionResult(tstate, func, result, NULL);
 }
 
-#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
-#include <emscripten.h>
-
-EM_JS(PyObject*, _PyCFunctionWithKeywords_TrampolineCall, (PyCFunctionWithKeywords func, PyObject *self, PyObject *args, PyObject *kw), {
-    return wasmTable.get(func)(self, args, kw);
-});
-#endif
diff --git a/Objects/mimalloc/alloc-aligned.c b/Objects/mimalloc/alloc-aligned.c
new file mode 100644
index 00000000000000..4c15f4043ec117
--- /dev/null
+++ b/Objects/mimalloc/alloc-aligned.c
@@ -0,0 +1,298 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/prim.h"  // mi_prim_get_default_heap
+
+#include <string.h>     // memset
+
+// ------------------------------------------------------
+// Aligned Allocation
+// ------------------------------------------------------
+
+// Fallback primitive aligned allocation -- split out for better codegen
+static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t* const heap, const size_t size, const size_t alignment, const size_t offset, const bool zero) mi_attr_noexcept
+{
+  mi_assert_internal(size <= PTRDIFF_MAX);
+  mi_assert_internal(alignment != 0 && _mi_is_power_of_two(alignment));
+
+  const uintptr_t align_mask = alignment - 1;  // for any x, `(x & align_mask) == (x % alignment)`
+  const size_t padsize = size + MI_PADDING_SIZE;
+
+  // use regular allocation if it is guaranteed to fit the alignment constraints
+  if (offset==0 && alignment<=padsize && padsize<=MI_MAX_ALIGN_GUARANTEE && (padsize&align_mask)==0) {
+    void* p = _mi_heap_malloc_zero(heap, size, zero);
+    mi_assert_internal(p == NULL || ((uintptr_t)p % alignment) == 0);
+    return p;
+  }
+
+  void* p;
+  size_t oversize;
+  if mi_unlikely(alignment > MI_ALIGNMENT_MAX) {
+    // use OS allocation for very large alignment and allocate inside a huge page (dedicated segment with 1 page)
+    // This can support alignments >= MI_SEGMENT_SIZE by ensuring the object can be aligned at a point in the
+    // first (and single) page such that the segment info is `MI_SEGMENT_SIZE` bytes before it (so it can be found by aligning the pointer down)
+    if mi_unlikely(offset != 0) {
+      // todo: cannot support offset alignment for very large alignments yet
+      #if MI_DEBUG > 0
+      _mi_error_message(EOVERFLOW, "aligned allocation with a very large alignment cannot be used with an alignment offset (size %zu, alignment %zu, offset %zu)\n", size, alignment, offset);
+      #endif
+      return NULL;
+    }
+    oversize = (size <= MI_SMALL_SIZE_MAX ? MI_SMALL_SIZE_MAX + 1 /* ensure we use generic malloc path */ : size);
+    p = _mi_heap_malloc_zero_ex(heap, oversize, false, alignment); // the page block size should be large enough to align in the single huge page block
+    // zero afterwards as only the area from the aligned_p may be committed!
+    if (p == NULL) return NULL;
+  }
+  else {
+    // otherwise over-allocate
+    oversize = size + alignment - 1;
+    p = _mi_heap_malloc_zero(heap, oversize, zero);
+    if (p == NULL) return NULL;
+  }
+
+  // .. and align within the allocation
+  const uintptr_t poffset = ((uintptr_t)p + offset) & align_mask;
+  const uintptr_t adjust  = (poffset == 0 ? 0 : alignment - poffset);
+  mi_assert_internal(adjust < alignment);
+  void* aligned_p = (void*)((uintptr_t)p + adjust);
+  if (aligned_p != p) {
+    mi_page_t* page = _mi_ptr_page(p);
+    mi_page_set_has_aligned(page, true);
+    _mi_padding_shrink(page, (mi_block_t*)p, adjust + size);
+  }
+  // todo: expand padding if overallocated ?
+
+  mi_assert_internal(mi_page_usable_block_size(_mi_ptr_page(p)) >= adjust + size);
+  mi_assert_internal(p == _mi_page_ptr_unalign(_mi_ptr_segment(aligned_p), _mi_ptr_page(aligned_p), aligned_p));
+  mi_assert_internal(((uintptr_t)aligned_p + offset) % alignment == 0);
+  mi_assert_internal(mi_usable_size(aligned_p)>=size);
+  mi_assert_internal(mi_usable_size(p) == mi_usable_size(aligned_p)+adjust);
+
+  // now zero the block if needed
+  if (alignment > MI_ALIGNMENT_MAX) {
+    // for the tracker, on huge aligned allocations only from the start of the large block is defined
+    mi_track_mem_undefined(aligned_p, size);
+    if (zero) {
+      _mi_memzero_aligned(aligned_p, mi_usable_size(aligned_p));
+    }
+  }
+
+  if (p != aligned_p) {
+    mi_track_align(p,aligned_p,adjust,mi_usable_size(aligned_p));
+  }
+  return aligned_p;
+}
+
+// Primitive aligned allocation
+static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t size, const size_t alignment, const size_t offset, const bool zero) mi_attr_noexcept
+{
+  // note: we don't require `size > offset`, we just guarantee that the address at offset is aligned regardless of the allocated size.
+  if mi_unlikely(alignment == 0 || !_mi_is_power_of_two(alignment)) { // require power-of-two (see <https://en.cppreference.com/w/c/memory/aligned_alloc>)
+    #if MI_DEBUG > 0
+    _mi_error_message(EOVERFLOW, "aligned allocation requires the alignment to be a power-of-two (size %zu, alignment %zu)\n", size, alignment);
+    #endif
+    return NULL;
+  }
+
+  if mi_unlikely(size > PTRDIFF_MAX) {          // we don't allocate more than PTRDIFF_MAX (see <https://sourceware.org/ml/libc-announce/2019/msg00001.html>)
+    #if MI_DEBUG > 0
+    _mi_error_message(EOVERFLOW, "aligned allocation request is too large (size %zu, alignment %zu)\n", size, alignment);
+    #endif
+    return NULL;
+  }
+  const uintptr_t align_mask = alignment-1;       // for any x, `(x & align_mask) == (x % alignment)`
+  const size_t padsize = size + MI_PADDING_SIZE;  // note: cannot overflow due to earlier size > PTRDIFF_MAX check
+
+  // try first if there happens to be a small block available with just the right alignment
+  if mi_likely(padsize <= MI_SMALL_SIZE_MAX && alignment <= padsize) {
+    mi_page_t* page = _mi_heap_get_free_small_page(heap, padsize);
+    const bool is_aligned = (((uintptr_t)page->free+offset) & align_mask)==0;
+    if mi_likely(page->free != NULL && is_aligned)
+    {
+      #if MI_STAT>1
+      mi_heap_stat_increase(heap, malloc, size);
+      #endif
+      void* p = _mi_page_malloc(heap, page, padsize, zero); // TODO: inline _mi_page_malloc
+      mi_assert_internal(p != NULL);
+      mi_assert_internal(((uintptr_t)p + offset) % alignment == 0);
+      mi_track_malloc(p,size,zero);
+      return p;
+    }
+  }
+  // fallback
+  return mi_heap_malloc_zero_aligned_at_fallback(heap, size, alignment, offset, zero);
+}
+
+
+// ------------------------------------------------------
+// Optimized mi_heap_malloc_aligned / mi_malloc_aligned
+// ------------------------------------------------------
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_malloc_aligned_at(mi_heap_t* heap, size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_malloc_zero_aligned_at(heap, size, alignment, offset, false);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_malloc_aligned(mi_heap_t* heap, size_t size, size_t alignment) mi_attr_noexcept {
+  if mi_unlikely(alignment == 0 || !_mi_is_power_of_two(alignment)) return NULL;
+  #if !MI_PADDING
+  // without padding, any small sized allocation is naturally aligned (see also `_mi_segment_page_start`)
+  if mi_likely(_mi_is_power_of_two(size) && size >= alignment && size <= MI_SMALL_SIZE_MAX)
+  #else
+  // with padding, we can only guarantee this for fixed alignments
+  if mi_likely((alignment == sizeof(void*) || (alignment == MI_MAX_ALIGN_SIZE && size > (MI_MAX_ALIGN_SIZE/2)))
+                && size <= MI_SMALL_SIZE_MAX)
+  #endif
+  {
+    // fast path for common alignment and size
+    return mi_heap_malloc_small(heap, size);
+  }
+  else {
+    return mi_heap_malloc_aligned_at(heap, size, alignment, 0);
+  }
+}
+
+// ensure a definition is emitted
+#if defined(__cplusplus)
+static void* _mi_heap_malloc_aligned = (void*)&mi_heap_malloc_aligned;
+#endif
+
+// ------------------------------------------------------
+// Aligned Allocation
+// ------------------------------------------------------
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_zalloc_aligned_at(mi_heap_t* heap, size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_malloc_zero_aligned_at(heap, size, alignment, offset, true);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_zalloc_aligned(mi_heap_t* heap, size_t size, size_t alignment) mi_attr_noexcept {
+  return mi_heap_zalloc_aligned_at(heap, size, alignment, 0);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_calloc_aligned_at(mi_heap_t* heap, size_t count, size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(count, size, &total)) return NULL;
+  return mi_heap_zalloc_aligned_at(heap, total, alignment, offset);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_calloc_aligned(mi_heap_t* heap, size_t count, size_t size, size_t alignment) mi_attr_noexcept {
+  return mi_heap_calloc_aligned_at(heap,count,size,alignment,0);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_malloc_aligned_at(size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_malloc_aligned_at(mi_prim_get_default_heap(), size, alignment, offset);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_malloc_aligned(size_t size, size_t alignment) mi_attr_noexcept {
+  return mi_heap_malloc_aligned(mi_prim_get_default_heap(), size, alignment);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_zalloc_aligned_at(size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_zalloc_aligned_at(mi_prim_get_default_heap(), size, alignment, offset);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_zalloc_aligned(size_t size, size_t alignment) mi_attr_noexcept {
+  return mi_heap_zalloc_aligned(mi_prim_get_default_heap(), size, alignment);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_calloc_aligned_at(size_t count, size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_calloc_aligned_at(mi_prim_get_default_heap(), count, size, alignment, offset);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_calloc_aligned(size_t count, size_t size, size_t alignment) mi_attr_noexcept {
+  return mi_heap_calloc_aligned(mi_prim_get_default_heap(), count, size, alignment);
+}
+
+
+// ------------------------------------------------------
+// Aligned re-allocation
+// ------------------------------------------------------
+
+static void* mi_heap_realloc_zero_aligned_at(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, size_t offset, bool zero) mi_attr_noexcept {
+  mi_assert(alignment > 0);
+  if (alignment <= sizeof(uintptr_t)) return _mi_heap_realloc_zero(heap,p,newsize,zero);
+  if (p == NULL) return mi_heap_malloc_zero_aligned_at(heap,newsize,alignment,offset,zero);
+  size_t size = mi_usable_size(p);
+  if (newsize <= size && newsize >= (size - (size / 2))
+      && (((uintptr_t)p + offset) % alignment) == 0) {
+    return p;  // reallocation still fits, is aligned and not more than 50% waste
+  }
+  else {
+    // note: we don't zero allocate upfront so we only zero initialize the expanded part
+    void* newp = mi_heap_malloc_aligned_at(heap,newsize,alignment,offset);
+    if (newp != NULL) {
+      if (zero && newsize > size) {
+        // also set last word in the previous allocation to zero to ensure any padding is zero-initialized
+        size_t start = (size >= sizeof(intptr_t) ? size - sizeof(intptr_t) : 0);
+        _mi_memzero((uint8_t*)newp + start, newsize - start);
+      }
+      _mi_memcpy_aligned(newp, p, (newsize > size ? size : newsize));
+      mi_free(p); // only free if successful
+    }
+    return newp;
+  }
+}
+
+static void* mi_heap_realloc_zero_aligned(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, bool zero) mi_attr_noexcept {
+  mi_assert(alignment > 0);
+  if (alignment <= sizeof(uintptr_t)) return _mi_heap_realloc_zero(heap,p,newsize,zero);
+  size_t offset = ((uintptr_t)p % alignment); // use offset of previous allocation (p can be NULL)
+  return mi_heap_realloc_zero_aligned_at(heap,p,newsize,alignment,offset,zero);
+}
+
+mi_decl_nodiscard void* mi_heap_realloc_aligned_at(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_realloc_zero_aligned_at(heap,p,newsize,alignment,offset,false);
+}
+
+mi_decl_nodiscard void* mi_heap_realloc_aligned(mi_heap_t* heap, void* p, size_t newsize, size_t alignment) mi_attr_noexcept {
+  return mi_heap_realloc_zero_aligned(heap,p,newsize,alignment,false);
+}
+
+mi_decl_nodiscard void* mi_heap_rezalloc_aligned_at(mi_heap_t* heap, void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_realloc_zero_aligned_at(heap, p, newsize, alignment, offset, true);
+}
+
+mi_decl_nodiscard void* mi_heap_rezalloc_aligned(mi_heap_t* heap, void* p, size_t newsize, size_t alignment) mi_attr_noexcept {
+  return mi_heap_realloc_zero_aligned(heap, p, newsize, alignment, true);
+}
+
+mi_decl_nodiscard void* mi_heap_recalloc_aligned_at(mi_heap_t* heap, void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(newcount, size, &total)) return NULL;
+  return mi_heap_rezalloc_aligned_at(heap, p, total, alignment, offset);
+}
+
+mi_decl_nodiscard void* mi_heap_recalloc_aligned(mi_heap_t* heap, void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(newcount, size, &total)) return NULL;
+  return mi_heap_rezalloc_aligned(heap, p, total, alignment);
+}
+
+mi_decl_nodiscard void* mi_realloc_aligned_at(void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_realloc_aligned_at(mi_prim_get_default_heap(), p, newsize, alignment, offset);
+}
+
+mi_decl_nodiscard void* mi_realloc_aligned(void* p, size_t newsize, size_t alignment) mi_attr_noexcept {
+  return mi_heap_realloc_aligned(mi_prim_get_default_heap(), p, newsize, alignment);
+}
+
+mi_decl_nodiscard void* mi_rezalloc_aligned_at(void* p, size_t newsize, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_rezalloc_aligned_at(mi_prim_get_default_heap(), p, newsize, alignment, offset);
+}
+
+mi_decl_nodiscard void* mi_rezalloc_aligned(void* p, size_t newsize, size_t alignment) mi_attr_noexcept {
+  return mi_heap_rezalloc_aligned(mi_prim_get_default_heap(), p, newsize, alignment);
+}
+
+mi_decl_nodiscard void* mi_recalloc_aligned_at(void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept {
+  return mi_heap_recalloc_aligned_at(mi_prim_get_default_heap(), p, newcount, size, alignment, offset);
+}
+
+mi_decl_nodiscard void* mi_recalloc_aligned(void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept {
+  return mi_heap_recalloc_aligned(mi_prim_get_default_heap(), p, newcount, size, alignment);
+}
diff --git a/Objects/mimalloc/alloc-override.c b/Objects/mimalloc/alloc-override.c
new file mode 100644
index 00000000000000..873065dc63495c
--- /dev/null
+++ b/Objects/mimalloc/alloc-override.c
@@ -0,0 +1,297 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+#if !defined(MI_IN_ALLOC_C)
+#error "this file should be included from 'alloc.c' (so aliases can work)"
+#endif
+
+#if defined(MI_MALLOC_OVERRIDE) && defined(_WIN32) && !(defined(MI_SHARED_LIB) && defined(_DLL))
+#error "It is only possible to override "malloc" on Windows when building as a DLL (and linking the C runtime as a DLL)"
+#endif
+
+#if defined(MI_MALLOC_OVERRIDE) && !(defined(_WIN32))
+
+#if defined(__APPLE__)
+#include <AvailabilityMacros.h>
+mi_decl_externc void   vfree(void* p);
+mi_decl_externc size_t malloc_size(const void* p);
+mi_decl_externc size_t malloc_good_size(size_t size);
+#endif
+
+// helper definition for C override of C++ new
+typedef struct mi_nothrow_s { int _tag; } mi_nothrow_t;
+
+// ------------------------------------------------------
+// Override system malloc
+// ------------------------------------------------------
+
+#if (defined(__GNUC__) || defined(__clang__)) && !defined(__APPLE__) && !MI_TRACK_ENABLED
+  // gcc, clang: use aliasing to alias the exported function to one of our `mi_` functions
+  #if (defined(__GNUC__) && __GNUC__ >= 9)
+    #pragma GCC diagnostic ignored "-Wattributes"  // or we get warnings that nodiscard is ignored on a forward
+    #define MI_FORWARD(fun)      __attribute__((alias(#fun), used, visibility("default"), copy(fun)));
+  #else
+    #define MI_FORWARD(fun)      __attribute__((alias(#fun), used, visibility("default")));
+  #endif
+  #define MI_FORWARD1(fun,x)      MI_FORWARD(fun)
+  #define MI_FORWARD2(fun,x,y)    MI_FORWARD(fun)
+  #define MI_FORWARD3(fun,x,y,z)  MI_FORWARD(fun)
+  #define MI_FORWARD0(fun,x)      MI_FORWARD(fun)
+  #define MI_FORWARD02(fun,x,y)   MI_FORWARD(fun)
+#else
+  // otherwise use forwarding by calling our `mi_` function
+  #define MI_FORWARD1(fun,x)      { return fun(x); }
+  #define MI_FORWARD2(fun,x,y)    { return fun(x,y); }
+  #define MI_FORWARD3(fun,x,y,z)  { return fun(x,y,z); }
+  #define MI_FORWARD0(fun,x)      { fun(x); }
+  #define MI_FORWARD02(fun,x,y)   { fun(x,y); }
+#endif
+
+
+#if defined(__APPLE__) && defined(MI_SHARED_LIB_EXPORT) && defined(MI_OSX_INTERPOSE)
+  // define MI_OSX_IS_INTERPOSED as we should not provide forwarding definitions for
+  // functions that are interposed (or the interposing does not work)
+  #define MI_OSX_IS_INTERPOSED
+
+  mi_decl_externc size_t mi_malloc_size_checked(void *p) {
+    if (!mi_is_in_heap_region(p)) return 0;
+    return mi_usable_size(p);
+  }
+
+  // use interposing so `DYLD_INSERT_LIBRARIES` works without `DYLD_FORCE_FLAT_NAMESPACE=1`
+  // See: <https://books.google.com/books?id=K8vUkpOXhN4C&pg=PA73>
+  struct mi_interpose_s {
+    const void* replacement;
+    const void* target;
+  };
+  #define MI_INTERPOSE_FUN(oldfun,newfun) { (const void*)&newfun, (const void*)&oldfun }
+  #define MI_INTERPOSE_MI(fun)            MI_INTERPOSE_FUN(fun,mi_##fun)
+
+  __attribute__((used)) static struct mi_interpose_s _mi_interposes[]  __attribute__((section("__DATA, __interpose"))) =
+  {
+    MI_INTERPOSE_MI(malloc),
+    MI_INTERPOSE_MI(calloc),
+    MI_INTERPOSE_MI(realloc),
+    MI_INTERPOSE_MI(strdup),
+    MI_INTERPOSE_MI(strndup),
+    MI_INTERPOSE_MI(realpath),
+    MI_INTERPOSE_MI(posix_memalign),
+    MI_INTERPOSE_MI(reallocf),
+    MI_INTERPOSE_MI(valloc),
+    MI_INTERPOSE_FUN(malloc_size,mi_malloc_size_checked),
+    MI_INTERPOSE_MI(malloc_good_size),
+    #if defined(MAC_OS_X_VERSION_10_15) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_15
+    MI_INTERPOSE_MI(aligned_alloc),
+    #endif
+    #ifdef MI_OSX_ZONE
+    // we interpose malloc_default_zone in alloc-override-osx.c so we can use mi_free safely
+    MI_INTERPOSE_MI(free),
+    MI_INTERPOSE_FUN(vfree,mi_free),
+    #else
+    // sometimes code allocates from default zone but deallocates using plain free :-( (like NxHashResizeToCapacity <https://github.com/nneonneo/osx-10.9-opensource/blob/master/objc4-551.1/runtime/hashtable2.mm>)
+    MI_INTERPOSE_FUN(free,mi_cfree), // use safe free that checks if pointers are from us
+    MI_INTERPOSE_FUN(vfree,mi_cfree),
+    #endif
+  };
+
+  #ifdef __cplusplus
+  extern "C" {
+  #endif
+  void  _ZdlPv(void* p);   // delete
+  void  _ZdaPv(void* p);   // delete[]
+  void  _ZdlPvm(void* p, size_t n);  // delete
+  void  _ZdaPvm(void* p, size_t n);  // delete[]
+  void* _Znwm(size_t n);  // new
+  void* _Znam(size_t n);  // new[]
+  void* _ZnwmRKSt9nothrow_t(size_t n, mi_nothrow_t tag); // new nothrow
+  void* _ZnamRKSt9nothrow_t(size_t n, mi_nothrow_t tag); // new[] nothrow
+  #ifdef __cplusplus
+  }
+  #endif
+  __attribute__((used)) static struct mi_interpose_s _mi_cxx_interposes[]  __attribute__((section("__DATA, __interpose"))) =
+  {
+    MI_INTERPOSE_FUN(_ZdlPv,mi_free),
+    MI_INTERPOSE_FUN(_ZdaPv,mi_free),
+    MI_INTERPOSE_FUN(_ZdlPvm,mi_free_size),
+    MI_INTERPOSE_FUN(_ZdaPvm,mi_free_size),
+    MI_INTERPOSE_FUN(_Znwm,mi_new),
+    MI_INTERPOSE_FUN(_Znam,mi_new),
+    MI_INTERPOSE_FUN(_ZnwmRKSt9nothrow_t,mi_new_nothrow),
+    MI_INTERPOSE_FUN(_ZnamRKSt9nothrow_t,mi_new_nothrow),
+  };
+
+#elif defined(_MSC_VER)
+  // cannot override malloc unless using a dll.
+  // we just override new/delete which does work in a static library.
+#else
+  // On all other systems forward to our API
+  mi_decl_export void* malloc(size_t size)              MI_FORWARD1(mi_malloc, size)
+  mi_decl_export void* calloc(size_t size, size_t n)    MI_FORWARD2(mi_calloc, size, n)
+  mi_decl_export void* realloc(void* p, size_t newsize) MI_FORWARD2(mi_realloc, p, newsize)
+  mi_decl_export void  free(void* p)                    MI_FORWARD0(mi_free, p)
+#endif
+
+#if (defined(__GNUC__) || defined(__clang__)) && !defined(__APPLE__)
+#pragma GCC visibility push(default)
+#endif
+
+// ------------------------------------------------------
+// Override new/delete
+// This is not really necessary as they usually call
+// malloc/free anyway, but it improves performance.
+// ------------------------------------------------------
+#ifdef __cplusplus
+  // ------------------------------------------------------
+  // With a C++ compiler we override the new/delete operators.
+  // see <https://en.cppreference.com/w/cpp/memory/new/operator_new>
+  // ------------------------------------------------------
+  #include <new>
+
+  #ifndef MI_OSX_IS_INTERPOSED
+    void operator delete(void* p) noexcept              MI_FORWARD0(mi_free,p)
+    void operator delete[](void* p) noexcept            MI_FORWARD0(mi_free,p)
+
+    void* operator new(std::size_t n) noexcept(false)   MI_FORWARD1(mi_new,n)
+    void* operator new[](std::size_t n) noexcept(false) MI_FORWARD1(mi_new,n)
+
+    void* operator new  (std::size_t n, const std::nothrow_t& tag) noexcept { MI_UNUSED(tag); return mi_new_nothrow(n); }
+    void* operator new[](std::size_t n, const std::nothrow_t& tag) noexcept { MI_UNUSED(tag); return mi_new_nothrow(n); }
+
+    #if (__cplusplus >= 201402L || _MSC_VER >= 1916)
+    void operator delete  (void* p, std::size_t n) noexcept MI_FORWARD02(mi_free_size,p,n)
+    void operator delete[](void* p, std::size_t n) noexcept MI_FORWARD02(mi_free_size,p,n)
+    #endif
+  #endif
+
+  #if (__cplusplus > 201402L && defined(__cpp_aligned_new)) && (!defined(__GNUC__) || (__GNUC__ > 5))
+  void operator delete  (void* p, std::align_val_t al) noexcept { mi_free_aligned(p, static_cast<size_t>(al)); }
+  void operator delete[](void* p, std::align_val_t al) noexcept { mi_free_aligned(p, static_cast<size_t>(al)); }
+  void operator delete  (void* p, std::size_t n, std::align_val_t al) noexcept { mi_free_size_aligned(p, n, static_cast<size_t>(al)); };
+  void operator delete[](void* p, std::size_t n, std::align_val_t al) noexcept { mi_free_size_aligned(p, n, static_cast<size_t>(al)); };
+  void operator delete  (void* p, std::align_val_t al, const std::nothrow_t&) noexcept { mi_free_aligned(p, static_cast<size_t>(al)); }
+  void operator delete[](void* p, std::align_val_t al, const std::nothrow_t&) noexcept { mi_free_aligned(p, static_cast<size_t>(al)); }
+
+  void* operator new( std::size_t n, std::align_val_t al)   noexcept(false) { return mi_new_aligned(n, static_cast<size_t>(al)); }
+  void* operator new[]( std::size_t n, std::align_val_t al) noexcept(false) { return mi_new_aligned(n, static_cast<size_t>(al)); }
+  void* operator new  (std::size_t n, std::align_val_t al, const std::nothrow_t&) noexcept { return mi_new_aligned_nothrow(n, static_cast<size_t>(al)); }
+  void* operator new[](std::size_t n, std::align_val_t al, const std::nothrow_t&) noexcept { return mi_new_aligned_nothrow(n, static_cast<size_t>(al)); }
+  #endif
+
+#elif (defined(__GNUC__) || defined(__clang__))
+  // ------------------------------------------------------
+  // Override by defining the mangled C++ names of the operators (as
+  // used by GCC and CLang).
+  // See <https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling>
+  // ------------------------------------------------------
+
+  void _ZdlPv(void* p)            MI_FORWARD0(mi_free,p) // delete
+  void _ZdaPv(void* p)            MI_FORWARD0(mi_free,p) // delete[]
+  void _ZdlPvm(void* p, size_t n) MI_FORWARD02(mi_free_size,p,n)
+  void _ZdaPvm(void* p, size_t n) MI_FORWARD02(mi_free_size,p,n)
+  void _ZdlPvSt11align_val_t(void* p, size_t al)            { mi_free_aligned(p,al); }
+  void _ZdaPvSt11align_val_t(void* p, size_t al)            { mi_free_aligned(p,al); }
+  void _ZdlPvmSt11align_val_t(void* p, size_t n, size_t al) { mi_free_size_aligned(p,n,al); }
+  void _ZdaPvmSt11align_val_t(void* p, size_t n, size_t al) { mi_free_size_aligned(p,n,al); }
+
+  #if (MI_INTPTR_SIZE==8)
+    void* _Znwm(size_t n)                             MI_FORWARD1(mi_new,n)  // new 64-bit
+    void* _Znam(size_t n)                             MI_FORWARD1(mi_new,n)  // new[] 64-bit
+    void* _ZnwmRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_nothrow(n); }
+    void* _ZnamRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_nothrow(n); }
+    void* _ZnwmSt11align_val_t(size_t n, size_t al)   MI_FORWARD2(mi_new_aligned, n, al)
+    void* _ZnamSt11align_val_t(size_t n, size_t al)   MI_FORWARD2(mi_new_aligned, n, al)
+    void* _ZnwmSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
+    void* _ZnamSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
+  #elif (MI_INTPTR_SIZE==4)
+    void* _Znwj(size_t n)                             MI_FORWARD1(mi_new,n)  // new 64-bit
+    void* _Znaj(size_t n)                             MI_FORWARD1(mi_new,n)  // new[] 64-bit
+    void* _ZnwjRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_nothrow(n); }
+    void* _ZnajRKSt9nothrow_t(size_t n, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_nothrow(n); }
+    void* _ZnwjSt11align_val_t(size_t n, size_t al)   MI_FORWARD2(mi_new_aligned, n, al)
+    void* _ZnajSt11align_val_t(size_t n, size_t al)   MI_FORWARD2(mi_new_aligned, n, al)
+    void* _ZnwjSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
+    void* _ZnajSt11align_val_tRKSt9nothrow_t(size_t n, size_t al, mi_nothrow_t tag) { MI_UNUSED(tag); return mi_new_aligned_nothrow(n,al); }
+  #else
+    #error "define overloads for new/delete for this platform (just for performance, can be skipped)"
+  #endif
+#endif // __cplusplus
+
+// ------------------------------------------------------
+// Further Posix & Unix functions definitions
+// ------------------------------------------------------
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef MI_OSX_IS_INTERPOSED
+  // Forward Posix/Unix calls as well
+  void*  reallocf(void* p, size_t newsize) MI_FORWARD2(mi_reallocf,p,newsize)
+  size_t malloc_size(const void* p)        MI_FORWARD1(mi_usable_size,p)
+  #if !defined(__ANDROID__) && !defined(__FreeBSD__)
+  size_t malloc_usable_size(void *p)       MI_FORWARD1(mi_usable_size,p)
+  #else
+  size_t malloc_usable_size(const void *p) MI_FORWARD1(mi_usable_size,p)
+  #endif
+
+  // No forwarding here due to aliasing/name mangling issues
+  void*  valloc(size_t size)               { return mi_valloc(size); }
+  void   vfree(void* p)                    { mi_free(p); }
+  size_t malloc_good_size(size_t size)     { return mi_malloc_good_size(size); }
+  int    posix_memalign(void** p, size_t alignment, size_t size) { return mi_posix_memalign(p, alignment, size); }
+
+  // `aligned_alloc` is only available when __USE_ISOC11 is defined.
+  // Note: it seems __USE_ISOC11 is not defined in musl (and perhaps other libc's) so we only check
+  // for it if using glibc.
+  // Note: Conda has a custom glibc where `aligned_alloc` is declared `static inline` and we cannot
+  // override it, but both _ISOC11_SOURCE and __USE_ISOC11 are undefined in Conda GCC7 or GCC9.
+  // Fortunately, in the case where `aligned_alloc` is declared as `static inline` it
+  // uses internally `memalign`, `posix_memalign`, or `_aligned_malloc` so we  can avoid overriding it ourselves.
+  #if !defined(__GLIBC__) || __USE_ISOC11
+  void* aligned_alloc(size_t alignment, size_t size) { return mi_aligned_alloc(alignment, size); }
+  #endif
+#endif
+
+// no forwarding here due to aliasing/name mangling issues
+void  cfree(void* p)                                    { mi_free(p); }
+void* pvalloc(size_t size)                              { return mi_pvalloc(size); }
+void* reallocarray(void* p, size_t count, size_t size)  { return mi_reallocarray(p, count, size); }
+int   reallocarr(void* p, size_t count, size_t size)    { return mi_reallocarr(p, count, size); }
+void* memalign(size_t alignment, size_t size)           { return mi_memalign(alignment, size); }
+void* _aligned_malloc(size_t alignment, size_t size)    { return mi_aligned_alloc(alignment, size); }
+
+#if defined(__wasi__)
+  // forward __libc interface (see PR #667)
+  void* __libc_malloc(size_t size)                      MI_FORWARD1(mi_malloc, size)
+  void* __libc_calloc(size_t count, size_t size)        MI_FORWARD2(mi_calloc, count, size)
+  void* __libc_realloc(void* p, size_t size)            MI_FORWARD2(mi_realloc, p, size)
+  void  __libc_free(void* p)                            MI_FORWARD0(mi_free, p)
+  void* __libc_memalign(size_t alignment, size_t size)  { return mi_memalign(alignment, size); }
+
+#elif defined(__GLIBC__) && defined(__linux__)
+  // forward __libc interface (needed for glibc-based Linux distributions)
+  void* __libc_malloc(size_t size)                      MI_FORWARD1(mi_malloc,size)
+  void* __libc_calloc(size_t count, size_t size)        MI_FORWARD2(mi_calloc,count,size)
+  void* __libc_realloc(void* p, size_t size)            MI_FORWARD2(mi_realloc,p,size)
+  void  __libc_free(void* p)                            MI_FORWARD0(mi_free,p)
+  void  __libc_cfree(void* p)                           MI_FORWARD0(mi_free,p)
+
+  void* __libc_valloc(size_t size)                      { return mi_valloc(size); }
+  void* __libc_pvalloc(size_t size)                     { return mi_pvalloc(size); }
+  void* __libc_memalign(size_t alignment, size_t size)  { return mi_memalign(alignment,size); }
+  int   __posix_memalign(void** p, size_t alignment, size_t size) { return mi_posix_memalign(p,alignment,size); }
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#if (defined(__GNUC__) || defined(__clang__)) && !defined(__APPLE__)
+#pragma GCC visibility pop
+#endif
+
+#endif // MI_MALLOC_OVERRIDE && !_WIN32
diff --git a/Objects/mimalloc/alloc-posix.c b/Objects/mimalloc/alloc-posix.c
new file mode 100644
index 00000000000000..225752fd8707fe
--- /dev/null
+++ b/Objects/mimalloc/alloc-posix.c
@@ -0,0 +1,185 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// ------------------------------------------------------------------------
+// mi prefixed publi definitions of various Posix, Unix, and C++ functions
+// for convenience and used when overriding these functions.
+// ------------------------------------------------------------------------
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+
+// ------------------------------------------------------
+// Posix & Unix functions definitions
+// ------------------------------------------------------
+
+#include <errno.h>
+#include <string.h>  // memset
+#include <stdlib.h>  // getenv
+
+#ifdef _MSC_VER
+#pragma warning(disable:4996)  // getenv _wgetenv
+#endif
+
+#ifndef EINVAL
+#define EINVAL 22
+#endif
+#ifndef ENOMEM
+#define ENOMEM 12
+#endif
+
+
+mi_decl_nodiscard size_t mi_malloc_size(const void* p) mi_attr_noexcept {
+  // if (!mi_is_in_heap_region(p)) return 0;
+  return mi_usable_size(p);
+}
+
+mi_decl_nodiscard size_t mi_malloc_usable_size(const void *p) mi_attr_noexcept {
+  // if (!mi_is_in_heap_region(p)) return 0;
+  return mi_usable_size(p);
+}
+
+mi_decl_nodiscard size_t mi_malloc_good_size(size_t size) mi_attr_noexcept {
+  return mi_good_size(size);
+}
+
+void mi_cfree(void* p) mi_attr_noexcept {
+  if (mi_is_in_heap_region(p)) {
+    mi_free(p);
+  }
+}
+
+int mi_posix_memalign(void** p, size_t alignment, size_t size) mi_attr_noexcept {
+  // Note: The spec dictates we should not modify `*p` on an error. (issue#27)
+  // <http://man7.org/linux/man-pages/man3/posix_memalign.3.html>
+  if (p == NULL) return EINVAL;
+  if ((alignment % sizeof(void*)) != 0) return EINVAL;                 // natural alignment
+  // it is also required that alignment is a power of 2 and > 0; this is checked in `mi_malloc_aligned`
+  if (alignment==0 || !_mi_is_power_of_two(alignment)) return EINVAL;  // not a power of 2
+  void* q = mi_malloc_aligned(size, alignment);
+  if (q==NULL && size != 0) return ENOMEM;
+  mi_assert_internal(((uintptr_t)q % alignment) == 0);
+  *p = q;
+  return 0;
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_memalign(size_t alignment, size_t size) mi_attr_noexcept {
+  void* p = mi_malloc_aligned(size, alignment);
+  mi_assert_internal(((uintptr_t)p % alignment) == 0);
+  return p;
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_valloc(size_t size) mi_attr_noexcept {
+  return mi_memalign( _mi_os_page_size(), size );
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_pvalloc(size_t size) mi_attr_noexcept {
+  size_t psize = _mi_os_page_size();
+  if (size >= SIZE_MAX - psize) return NULL; // overflow
+  size_t asize = _mi_align_up(size, psize);
+  return mi_malloc_aligned(asize, psize);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept {
+  // C11 requires the size to be an integral multiple of the alignment, see <https://en.cppreference.com/w/c/memory/aligned_alloc>.
+  // unfortunately, it turns out quite some programs pass a size that is not an integral multiple so skip this check..
+  /* if mi_unlikely((size & (alignment - 1)) != 0) { // C11 requires alignment>0 && integral multiple, see <https://en.cppreference.com/w/c/memory/aligned_alloc>
+      #if MI_DEBUG > 0
+      _mi_error_message(EOVERFLOW, "(mi_)aligned_alloc requires the size to be an integral multiple of the alignment (size %zu, alignment %zu)\n", size, alignment);
+      #endif
+      return NULL;
+    }
+  */
+  // C11 also requires alignment to be a power-of-two (and > 0) which is checked in mi_malloc_aligned
+  void* p = mi_malloc_aligned(size, alignment);
+  mi_assert_internal(((uintptr_t)p % alignment) == 0);
+  return p;
+}
+
+mi_decl_nodiscard void* mi_reallocarray( void* p, size_t count, size_t size ) mi_attr_noexcept {  // BSD
+  void* newp = mi_reallocn(p,count,size);
+  if (newp==NULL) { errno = ENOMEM; }
+  return newp;
+}
+
+mi_decl_nodiscard int mi_reallocarr( void* p, size_t count, size_t size ) mi_attr_noexcept { // NetBSD
+  mi_assert(p != NULL);
+  if (p == NULL) {
+    errno = EINVAL;
+    return EINVAL;
+  }
+  void** op = (void**)p;
+  void* newp = mi_reallocarray(*op, count, size);
+  if mi_unlikely(newp == NULL) { return errno; }
+  *op = newp;
+  return 0;
+}
+
+void* mi__expand(void* p, size_t newsize) mi_attr_noexcept {  // Microsoft
+  void* res = mi_expand(p, newsize);
+  if (res == NULL) { errno = ENOMEM; }
+  return res;
+}
+
+mi_decl_nodiscard mi_decl_restrict unsigned short* mi_wcsdup(const unsigned short* s) mi_attr_noexcept {
+  if (s==NULL) return NULL;
+  size_t len;
+  for(len = 0; s[len] != 0; len++) { }
+  size_t size = (len+1)*sizeof(unsigned short);
+  unsigned short* p = (unsigned short*)mi_malloc(size);
+  if (p != NULL) {
+    _mi_memcpy(p,s,size);
+  }
+  return p;
+}
+
+mi_decl_nodiscard mi_decl_restrict unsigned char* mi_mbsdup(const unsigned char* s)  mi_attr_noexcept {
+  return (unsigned char*)mi_strdup((const char*)s);
+}
+
+int mi_dupenv_s(char** buf, size_t* size, const char* name) mi_attr_noexcept {
+  if (buf==NULL || name==NULL) return EINVAL;
+  if (size != NULL) *size = 0;
+  char* p = getenv(name);        // mscver warning 4996
+  if (p==NULL) {
+    *buf = NULL;
+  }
+  else {
+    *buf = mi_strdup(p);
+    if (*buf==NULL) return ENOMEM;
+    if (size != NULL) *size = _mi_strlen(p);
+  }
+  return 0;
+}
+
+int mi_wdupenv_s(unsigned short** buf, size_t* size, const unsigned short* name) mi_attr_noexcept {
+  if (buf==NULL || name==NULL) return EINVAL;
+  if (size != NULL) *size = 0;
+#if !defined(_WIN32) || (defined(WINAPI_FAMILY) && (WINAPI_FAMILY != WINAPI_FAMILY_DESKTOP_APP))
+  // not supported
+  *buf = NULL;
+  return EINVAL;
+#else
+  unsigned short* p = (unsigned short*)_wgetenv((const wchar_t*)name);  // msvc warning 4996
+  if (p==NULL) {
+    *buf = NULL;
+  }
+  else {
+    *buf = mi_wcsdup(p);
+    if (*buf==NULL) return ENOMEM;
+    if (size != NULL) *size = wcslen((const wchar_t*)p);
+  }
+  return 0;
+#endif
+}
+
+mi_decl_nodiscard void* mi_aligned_offset_recalloc(void* p, size_t newcount, size_t size, size_t alignment, size_t offset) mi_attr_noexcept { // Microsoft
+  return mi_recalloc_aligned_at(p, newcount, size, alignment, offset);
+}
+
+mi_decl_nodiscard void* mi_aligned_recalloc(void* p, size_t newcount, size_t size, size_t alignment) mi_attr_noexcept { // Microsoft
+  return mi_recalloc_aligned(p, newcount, size, alignment);
+}
diff --git a/Objects/mimalloc/alloc.c b/Objects/mimalloc/alloc.c
new file mode 100644
index 00000000000000..f96c6f0b37f873
--- /dev/null
+++ b/Objects/mimalloc/alloc.c
@@ -0,0 +1,1062 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE   // for realpath() on Linux
+#endif
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"   // _mi_prim_thread_id()
+
+#include <string.h>      // memset, strlen (for mi_strdup)
+#include <stdlib.h>      // malloc, abort
+
+#define _ZSt15get_new_handlerv _Py__ZSt15get_new_handlerv
+
+#define MI_IN_ALLOC_C
+#include "alloc-override.c"
+#undef MI_IN_ALLOC_C
+
+// ------------------------------------------------------
+// Allocation
+// ------------------------------------------------------
+
+// Fast allocation in a page: just pop from the free list.
+// Fall back to generic allocation only if the list is empty.
+extern inline void* _mi_page_malloc(mi_heap_t* heap, mi_page_t* page, size_t size, bool zero) mi_attr_noexcept {
+  mi_assert_internal(page->xblock_size==0||mi_page_block_size(page) >= size);
+  mi_block_t* const block = page->free;
+  if mi_unlikely(block == NULL) {
+    return _mi_malloc_generic(heap, size, zero, 0);
+  }
+  mi_assert_internal(block != NULL && _mi_ptr_page(block) == page);
+  // pop from the free list
+  page->used++;
+  page->free = mi_block_next(page, block);
+  mi_assert_internal(page->free == NULL || _mi_ptr_page(page->free) == page);
+  #if MI_DEBUG>3
+  if (page->free_is_zero) {
+    mi_assert_expensive(mi_mem_is_zero(block+1,size - sizeof(*block)));
+  }
+  #endif
+
+  // allow use of the block internally
+  // note: when tracking we need to avoid ever touching the MI_PADDING since
+  // that is tracked by valgrind etc. as non-accessible (through the red-zone, see `mimalloc/track.h`)
+  mi_track_mem_undefined(block, mi_page_usable_block_size(page));
+
+  // zero the block? note: we need to zero the full block size (issue #63)
+  if mi_unlikely(zero) {
+    mi_assert_internal(page->xblock_size != 0); // do not call with zero'ing for huge blocks (see _mi_malloc_generic)
+    mi_assert_internal(page->xblock_size >= MI_PADDING_SIZE);
+    if (page->free_is_zero) {
+      block->next = 0;
+      mi_track_mem_defined(block, page->xblock_size - MI_PADDING_SIZE);
+    }
+    else {
+      _mi_memzero_aligned(block, page->xblock_size - MI_PADDING_SIZE);
+    }
+  }
+
+#if (MI_DEBUG>0) && !MI_TRACK_ENABLED && !MI_TSAN
+  if (!zero && !mi_page_is_huge(page)) {
+    memset(block, MI_DEBUG_UNINIT, mi_page_usable_block_size(page));
+  }
+#elif (MI_SECURE!=0)
+  if (!zero) { block->next = 0; } // don't leak internal data
+#endif
+
+#if (MI_STAT>0)
+  const size_t bsize = mi_page_usable_block_size(page);
+  if (bsize <= MI_MEDIUM_OBJ_SIZE_MAX) {
+    mi_heap_stat_increase(heap, normal, bsize);
+    mi_heap_stat_counter_increase(heap, normal_count, 1);
+#if (MI_STAT>1)
+    const size_t bin = _mi_bin(bsize);
+    mi_heap_stat_increase(heap, normal_bins[bin], 1);
+#endif
+  }
+#endif
+
+#if MI_PADDING // && !MI_TRACK_ENABLED
+  mi_padding_t* const padding = (mi_padding_t*)((uint8_t*)block + mi_page_usable_block_size(page));
+  ptrdiff_t delta = ((uint8_t*)padding - (uint8_t*)block - (size - MI_PADDING_SIZE));
+  #if (MI_DEBUG>=2)
+  mi_assert_internal(delta >= 0 && mi_page_usable_block_size(page) >= (size - MI_PADDING_SIZE + delta));
+  #endif
+  mi_track_mem_defined(padding,sizeof(mi_padding_t));  // note: re-enable since mi_page_usable_block_size may set noaccess
+  padding->canary = (uint32_t)(mi_ptr_encode(page,block,page->keys));
+  padding->delta  = (uint32_t)(delta);
+  #if MI_PADDING_CHECK
+  if (!mi_page_is_huge(page)) {
+    uint8_t* fill = (uint8_t*)padding - delta;
+    const size_t maxpad = (delta > MI_MAX_ALIGN_SIZE ? MI_MAX_ALIGN_SIZE : delta); // set at most N initial padding bytes
+    for (size_t i = 0; i < maxpad; i++) { fill[i] = MI_DEBUG_PADDING; }
+  }
+  #endif
+#endif
+
+  return block;
+}
+
+static inline mi_decl_restrict void* mi_heap_malloc_small_zero(mi_heap_t* heap, size_t size, bool zero) mi_attr_noexcept {
+  mi_assert(heap != NULL);
+  #if MI_DEBUG
+  const uintptr_t tid = _mi_thread_id();
+  mi_assert(heap->thread_id == 0 || heap->thread_id == tid); // heaps are thread local
+  #endif
+  mi_assert(size <= MI_SMALL_SIZE_MAX);
+  #if (MI_PADDING)
+  if (size == 0) { size = sizeof(void*); }
+  #endif
+  mi_page_t* page = _mi_heap_get_free_small_page(heap, size + MI_PADDING_SIZE);
+  void* const p = _mi_page_malloc(heap, page, size + MI_PADDING_SIZE, zero);
+  mi_track_malloc(p,size,zero);
+  #if MI_STAT>1
+  if (p != NULL) {
+    if (!mi_heap_is_initialized(heap)) { heap = mi_prim_get_default_heap(); }
+    mi_heap_stat_increase(heap, malloc, mi_usable_size(p));
+  }
+  #endif
+  #if MI_DEBUG>3
+  if (p != NULL && zero) {
+    mi_assert_expensive(mi_mem_is_zero(p, size));
+  }
+  #endif
+  return p;
+}
+
+// allocate a small block
+mi_decl_nodiscard extern inline mi_decl_restrict void* mi_heap_malloc_small(mi_heap_t* heap, size_t size) mi_attr_noexcept {
+  return mi_heap_malloc_small_zero(heap, size, false);
+}
+
+mi_decl_nodiscard extern inline mi_decl_restrict void* mi_malloc_small(size_t size) mi_attr_noexcept {
+  return mi_heap_malloc_small(mi_prim_get_default_heap(), size);
+}
+
+// The main allocation function
+extern inline void* _mi_heap_malloc_zero_ex(mi_heap_t* heap, size_t size, bool zero, size_t huge_alignment) mi_attr_noexcept {
+  if mi_likely(size <= MI_SMALL_SIZE_MAX) {
+    mi_assert_internal(huge_alignment == 0);
+    return mi_heap_malloc_small_zero(heap, size, zero);
+  }
+  else {
+    mi_assert(heap!=NULL);
+    mi_assert(heap->thread_id == 0 || heap->thread_id == _mi_thread_id());   // heaps are thread local
+    void* const p = _mi_malloc_generic(heap, size + MI_PADDING_SIZE, zero, huge_alignment);  // note: size can overflow but it is detected in malloc_generic
+    mi_track_malloc(p,size,zero);
+    #if MI_STAT>1
+    if (p != NULL) {
+      if (!mi_heap_is_initialized(heap)) { heap = mi_prim_get_default_heap(); }
+      mi_heap_stat_increase(heap, malloc, mi_usable_size(p));
+    }
+    #endif
+    #if MI_DEBUG>3
+    if (p != NULL && zero) {
+      mi_assert_expensive(mi_mem_is_zero(p, size));
+    }
+    #endif
+    return p;
+  }
+}
+
+extern inline void* _mi_heap_malloc_zero(mi_heap_t* heap, size_t size, bool zero) mi_attr_noexcept {
+  return _mi_heap_malloc_zero_ex(heap, size, zero, 0);
+}
+
+mi_decl_nodiscard extern inline mi_decl_restrict void* mi_heap_malloc(mi_heap_t* heap, size_t size) mi_attr_noexcept {
+  return _mi_heap_malloc_zero(heap, size, false);
+}
+
+mi_decl_nodiscard extern inline mi_decl_restrict void* mi_malloc(size_t size) mi_attr_noexcept {
+  return mi_heap_malloc(mi_prim_get_default_heap(), size);
+}
+
+// zero initialized small block
+mi_decl_nodiscard mi_decl_restrict void* mi_zalloc_small(size_t size) mi_attr_noexcept {
+  return mi_heap_malloc_small_zero(mi_prim_get_default_heap(), size, true);
+}
+
+mi_decl_nodiscard extern inline mi_decl_restrict void* mi_heap_zalloc(mi_heap_t* heap, size_t size) mi_attr_noexcept {
+  return _mi_heap_malloc_zero(heap, size, true);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_zalloc(size_t size) mi_attr_noexcept {
+  return mi_heap_zalloc(mi_prim_get_default_heap(),size);
+}
+
+
+// ------------------------------------------------------
+// Check for double free in secure and debug mode
+// This is somewhat expensive so only enabled for secure mode 4
+// ------------------------------------------------------
+
+#if (MI_ENCODE_FREELIST && (MI_SECURE>=4 || MI_DEBUG!=0))
+// linear check if the free list contains a specific element
+static bool mi_list_contains(const mi_page_t* page, const mi_block_t* list, const mi_block_t* elem) {
+  while (list != NULL) {
+    if (elem==list) return true;
+    list = mi_block_next(page, list);
+  }
+  return false;
+}
+
+static mi_decl_noinline bool mi_check_is_double_freex(const mi_page_t* page, const mi_block_t* block) {
+  // The decoded value is in the same page (or NULL).
+  // Walk the free lists to verify positively if it is already freed
+  if (mi_list_contains(page, page->free, block) ||
+      mi_list_contains(page, page->local_free, block) ||
+      mi_list_contains(page, mi_page_thread_free(page), block))
+  {
+    _mi_error_message(EAGAIN, "double free detected of block %p with size %zu\n", block, mi_page_block_size(page));
+    return true;
+  }
+  return false;
+}
+
+#define mi_track_page(page,access)  { size_t psize; void* pstart = _mi_page_start(_mi_page_segment(page),page,&psize); mi_track_mem_##access( pstart, psize); }
+
+static inline bool mi_check_is_double_free(const mi_page_t* page, const mi_block_t* block) {
+  bool is_double_free = false;
+  mi_block_t* n = mi_block_nextx(page, block, page->keys); // pretend it is freed, and get the decoded first field
+  if (((uintptr_t)n & (MI_INTPTR_SIZE-1))==0 &&  // quick check: aligned pointer?
+      (n==NULL || mi_is_in_same_page(block, n))) // quick check: in same page or NULL?
+  {
+    // Suspicous: decoded value a in block is in the same page (or NULL) -- maybe a double free?
+    // (continue in separate function to improve code generation)
+    is_double_free = mi_check_is_double_freex(page, block);
+  }
+  return is_double_free;
+}
+#else
+static inline bool mi_check_is_double_free(const mi_page_t* page, const mi_block_t* block) {
+  MI_UNUSED(page);
+  MI_UNUSED(block);
+  return false;
+}
+#endif
+
+// ---------------------------------------------------------------------------
+// Check for heap block overflow by setting up padding at the end of the block
+// ---------------------------------------------------------------------------
+
+#if MI_PADDING // && !MI_TRACK_ENABLED
+static bool mi_page_decode_padding(const mi_page_t* page, const mi_block_t* block, size_t* delta, size_t* bsize) {
+  *bsize = mi_page_usable_block_size(page);
+  const mi_padding_t* const padding = (mi_padding_t*)((uint8_t*)block + *bsize);
+  mi_track_mem_defined(padding,sizeof(mi_padding_t));
+  *delta = padding->delta;
+  uint32_t canary = padding->canary;
+  uintptr_t keys[2];
+  keys[0] = page->keys[0];
+  keys[1] = page->keys[1];
+  bool ok = ((uint32_t)mi_ptr_encode(page,block,keys) == canary && *delta <= *bsize);
+  mi_track_mem_noaccess(padding,sizeof(mi_padding_t));
+  return ok;
+}
+
+// Return the exact usable size of a block.
+static size_t mi_page_usable_size_of(const mi_page_t* page, const mi_block_t* block) {
+  size_t bsize;
+  size_t delta;
+  bool ok = mi_page_decode_padding(page, block, &delta, &bsize);
+  mi_assert_internal(ok); mi_assert_internal(delta <= bsize);
+  return (ok ? bsize - delta : 0);
+}
+
+// When a non-thread-local block is freed, it becomes part of the thread delayed free
+// list that is freed later by the owning heap. If the exact usable size is too small to
+// contain the pointer for the delayed list, then shrink the padding (by decreasing delta)
+// so it will later not trigger an overflow error in `mi_free_block`.
+void _mi_padding_shrink(const mi_page_t* page, const mi_block_t* block, const size_t min_size) {
+  size_t bsize;
+  size_t delta;
+  bool ok = mi_page_decode_padding(page, block, &delta, &bsize);
+  mi_assert_internal(ok);
+  if (!ok || (bsize - delta) >= min_size) return;  // usually already enough space
+  mi_assert_internal(bsize >= min_size);
+  if (bsize < min_size) return;  // should never happen
+  size_t new_delta = (bsize - min_size);
+  mi_assert_internal(new_delta < bsize);
+  mi_padding_t* padding = (mi_padding_t*)((uint8_t*)block + bsize);
+  mi_track_mem_defined(padding,sizeof(mi_padding_t));
+  padding->delta = (uint32_t)new_delta;
+  mi_track_mem_noaccess(padding,sizeof(mi_padding_t));
+}
+#else
+static size_t mi_page_usable_size_of(const mi_page_t* page, const mi_block_t* block) {
+  MI_UNUSED(block);
+  return mi_page_usable_block_size(page);
+}
+
+void _mi_padding_shrink(const mi_page_t* page, const mi_block_t* block, const size_t min_size) {
+  MI_UNUSED(page);
+  MI_UNUSED(block);
+  MI_UNUSED(min_size);
+}
+#endif
+
+#if MI_PADDING && MI_PADDING_CHECK
+
+static bool mi_verify_padding(const mi_page_t* page, const mi_block_t* block, size_t* size, size_t* wrong) {
+  size_t bsize;
+  size_t delta;
+  bool ok = mi_page_decode_padding(page, block, &delta, &bsize);
+  *size = *wrong = bsize;
+  if (!ok) return false;
+  mi_assert_internal(bsize >= delta);
+  *size = bsize - delta;
+  if (!mi_page_is_huge(page)) {
+    uint8_t* fill = (uint8_t*)block + bsize - delta;
+    const size_t maxpad = (delta > MI_MAX_ALIGN_SIZE ? MI_MAX_ALIGN_SIZE : delta); // check at most the first N padding bytes
+    mi_track_mem_defined(fill, maxpad);
+    for (size_t i = 0; i < maxpad; i++) {
+      if (fill[i] != MI_DEBUG_PADDING) {
+        *wrong = bsize - delta + i;
+        ok = false;
+        break;
+      }
+    }
+    mi_track_mem_noaccess(fill, maxpad);
+  }
+  return ok;
+}
+
+static void mi_check_padding(const mi_page_t* page, const mi_block_t* block) {
+  size_t size;
+  size_t wrong;
+  if (!mi_verify_padding(page,block,&size,&wrong)) {
+    _mi_error_message(EFAULT, "buffer overflow in heap block %p of size %zu: write after %zu bytes\n", block, size, wrong );
+  }
+}
+
+#else
+
+static void mi_check_padding(const mi_page_t* page, const mi_block_t* block) {
+  MI_UNUSED(page);
+  MI_UNUSED(block);
+}
+
+#endif
+
+// only maintain stats for smaller objects if requested
+#if (MI_STAT>0)
+static void mi_stat_free(const mi_page_t* page, const mi_block_t* block) {
+  #if (MI_STAT < 2)
+  MI_UNUSED(block);
+  #endif
+  mi_heap_t* const heap = mi_heap_get_default();
+  const size_t bsize = mi_page_usable_block_size(page);
+  #if (MI_STAT>1)
+  const size_t usize = mi_page_usable_size_of(page, block);
+  mi_heap_stat_decrease(heap, malloc, usize);
+  #endif
+  if (bsize <= MI_MEDIUM_OBJ_SIZE_MAX) {
+    mi_heap_stat_decrease(heap, normal, bsize);
+    #if (MI_STAT > 1)
+    mi_heap_stat_decrease(heap, normal_bins[_mi_bin(bsize)], 1);
+    #endif
+  }
+  else if (bsize <= MI_LARGE_OBJ_SIZE_MAX) {
+    mi_heap_stat_decrease(heap, large, bsize);
+  }
+  else {
+    mi_heap_stat_decrease(heap, huge, bsize);
+  }
+}
+#else
+static void mi_stat_free(const mi_page_t* page, const mi_block_t* block) {
+  MI_UNUSED(page); MI_UNUSED(block);
+}
+#endif
+
+#if MI_HUGE_PAGE_ABANDON
+#if (MI_STAT>0)
+// maintain stats for huge objects
+static void mi_stat_huge_free(const mi_page_t* page) {
+  mi_heap_t* const heap = mi_heap_get_default();
+  const size_t bsize = mi_page_block_size(page); // to match stats in `page.c:mi_page_huge_alloc`
+  if (bsize <= MI_LARGE_OBJ_SIZE_MAX) {
+    mi_heap_stat_decrease(heap, large, bsize);
+  }
+  else {
+    mi_heap_stat_decrease(heap, huge, bsize);
+  }
+}
+#else
+static void mi_stat_huge_free(const mi_page_t* page) {
+  MI_UNUSED(page);
+}
+#endif
+#endif
+
+// ------------------------------------------------------
+// Free
+// ------------------------------------------------------
+
+// multi-threaded free (or free in huge block if compiled with MI_HUGE_PAGE_ABANDON)
+static mi_decl_noinline void _mi_free_block_mt(mi_page_t* page, mi_block_t* block)
+{
+  // The padding check may access the non-thread-owned page for the key values.
+  // that is safe as these are constant and the page won't be freed (as the block is not freed yet).
+  mi_check_padding(page, block);
+  _mi_padding_shrink(page, block, sizeof(mi_block_t));       // for small size, ensure we can fit the delayed thread pointers without triggering overflow detection
+
+  // huge page segments are always abandoned and can be freed immediately
+  mi_segment_t* segment = _mi_page_segment(page);
+  if (segment->kind == MI_SEGMENT_HUGE) {
+    #if MI_HUGE_PAGE_ABANDON
+    // huge page segments are always abandoned and can be freed immediately
+    mi_stat_huge_free(page);
+    _mi_segment_huge_page_free(segment, page, block);
+    return;
+    #else
+    // huge pages are special as they occupy the entire segment
+    // as these are large we reset the memory occupied by the page so it is available to other threads
+    // (as the owning thread needs to actually free the memory later).
+    _mi_segment_huge_page_reset(segment, page, block);
+    #endif
+  }
+
+  #if (MI_DEBUG>0) && !MI_TRACK_ENABLED && !MI_TSAN        // note: when tracking, cannot use mi_usable_size with multi-threading
+  if (segment->kind != MI_SEGMENT_HUGE) {                  // not for huge segments as we just reset the content
+    memset(block, MI_DEBUG_FREED, mi_usable_size(block));
+  }
+  #endif
+
+  // Try to put the block on either the page-local thread free list, or the heap delayed free list.
+  mi_thread_free_t tfreex;
+  bool use_delayed;
+  mi_thread_free_t tfree = mi_atomic_load_relaxed(&page->xthread_free);
+  do {
+    use_delayed = (mi_tf_delayed(tfree) == MI_USE_DELAYED_FREE);
+    if mi_unlikely(use_delayed) {
+      // unlikely: this only happens on the first concurrent free in a page that is in the full list
+      tfreex = mi_tf_set_delayed(tfree,MI_DELAYED_FREEING);
+    }
+    else {
+      // usual: directly add to page thread_free list
+      mi_block_set_next(page, block, mi_tf_block(tfree));
+      tfreex = mi_tf_set_block(tfree,block);
+    }
+  } while (!mi_atomic_cas_weak_release(&page->xthread_free, &tfree, tfreex));
+
+  if mi_unlikely(use_delayed) {
+    // racy read on `heap`, but ok because MI_DELAYED_FREEING is set (see `mi_heap_delete` and `mi_heap_collect_abandon`)
+    mi_heap_t* const heap = (mi_heap_t*)(mi_atomic_load_acquire(&page->xheap)); //mi_page_heap(page);
+    mi_assert_internal(heap != NULL);
+    if (heap != NULL) {
+      // add to the delayed free list of this heap. (do this atomically as the lock only protects heap memory validity)
+      mi_block_t* dfree = mi_atomic_load_ptr_relaxed(mi_block_t, &heap->thread_delayed_free);
+      do {
+        mi_block_set_nextx(heap,block,dfree, heap->keys);
+      } while (!mi_atomic_cas_ptr_weak_release(mi_block_t,&heap->thread_delayed_free, &dfree, block));
+    }
+
+    // and reset the MI_DELAYED_FREEING flag
+    tfree = mi_atomic_load_relaxed(&page->xthread_free);
+    do {
+      tfreex = tfree;
+      mi_assert_internal(mi_tf_delayed(tfree) == MI_DELAYED_FREEING);
+      tfreex = mi_tf_set_delayed(tfree,MI_NO_DELAYED_FREE);
+    } while (!mi_atomic_cas_weak_release(&page->xthread_free, &tfree, tfreex));
+  }
+}
+
+// regular free
+static inline void _mi_free_block(mi_page_t* page, bool local, mi_block_t* block)
+{
+  // and push it on the free list
+  //const size_t bsize = mi_page_block_size(page);
+  if mi_likely(local) {
+    // owning thread can free a block directly
+    if mi_unlikely(mi_check_is_double_free(page, block)) return;
+    mi_check_padding(page, block);
+    #if (MI_DEBUG>0) && !MI_TRACK_ENABLED && !MI_TSAN
+    if (!mi_page_is_huge(page)) {   // huge page content may be already decommitted
+      memset(block, MI_DEBUG_FREED, mi_page_block_size(page));
+    }
+    #endif
+    mi_block_set_next(page, block, page->local_free);
+    page->local_free = block;
+    page->used--;
+    if mi_unlikely(mi_page_all_free(page)) {
+      _mi_page_retire(page);
+    }
+    else if mi_unlikely(mi_page_is_in_full(page)) {
+      _mi_page_unfull(page);
+    }
+  }
+  else {
+    _mi_free_block_mt(page,block);
+  }
+}
+
+
+// Adjust a block that was allocated aligned, to the actual start of the block in the page.
+mi_block_t* _mi_page_ptr_unalign(const mi_segment_t* segment, const mi_page_t* page, const void* p) {
+  mi_assert_internal(page!=NULL && p!=NULL);
+  const size_t diff   = (uint8_t*)p - _mi_page_start(segment, page, NULL);
+  const size_t adjust = (diff % mi_page_block_size(page));
+  return (mi_block_t*)((uintptr_t)p - adjust);
+}
+
+
+void mi_decl_noinline _mi_free_generic(const mi_segment_t* segment, mi_page_t* page, bool is_local, void* p) mi_attr_noexcept {
+  mi_block_t* const block = (mi_page_has_aligned(page) ? _mi_page_ptr_unalign(segment, page, p) : (mi_block_t*)p);
+  mi_stat_free(page, block);    // stat_free may access the padding
+  mi_track_free_size(block, mi_page_usable_size_of(page,block));
+  _mi_free_block(page, is_local, block);
+}
+
+// Get the segment data belonging to a pointer
+// This is just a single `and` in assembly but does further checks in debug mode
+// (and secure mode) if this was a valid pointer.
+static inline mi_segment_t* mi_checked_ptr_segment(const void* p, const char* msg)
+{
+  MI_UNUSED(msg);
+  mi_assert(p != NULL);
+
+#if (MI_DEBUG>0)
+  if mi_unlikely(((uintptr_t)p & (MI_INTPTR_SIZE - 1)) != 0) {
+    _mi_error_message(EINVAL, "%s: invalid (unaligned) pointer: %p\n", msg, p);
+    return NULL;
+  }
+#endif
+
+  mi_segment_t* const segment = _mi_ptr_segment(p);
+  mi_assert_internal(segment != NULL);
+
+#if 0 && (MI_DEBUG>0)
+  if mi_unlikely(!mi_is_in_heap_region(p)) {
+  #if (MI_INTPTR_SIZE == 8 && defined(__linux__))
+    if (((uintptr_t)p >> 40) != 0x7F) { // linux tends to align large blocks above 0x7F000000000 (issue #640)
+  #else
+    {
+  #endif
+      _mi_warning_message("%s: pointer might not point to a valid heap region: %p\n"
+        "(this may still be a valid very large allocation (over 64MiB))\n", msg, p);
+      if mi_likely(_mi_ptr_cookie(segment) == segment->cookie) {
+        _mi_warning_message("(yes, the previous pointer %p was valid after all)\n", p);
+      }
+    }
+  }
+#endif
+#if (MI_DEBUG>0 || MI_SECURE>=4)
+  if mi_unlikely(_mi_ptr_cookie(segment) != segment->cookie) {
+    _mi_error_message(EINVAL, "%s: pointer does not point to a valid heap space: %p\n", msg, p);
+    return NULL;
+  }
+#endif
+
+  return segment;
+}
+
+// Free a block
+// fast path written carefully to prevent spilling on the stack
+void mi_free(void* p) mi_attr_noexcept
+{
+  if mi_unlikely(p == NULL) return;
+  mi_segment_t* const segment = mi_checked_ptr_segment(p,"mi_free");
+  const bool          is_local= (_mi_prim_thread_id() == mi_atomic_load_relaxed(&segment->thread_id));
+  mi_page_t* const    page    = _mi_segment_page_of(segment, p);
+
+  if mi_likely(is_local) {                       // thread-local free?
+    if mi_likely(page->flags.full_aligned == 0)  // and it is not a full page (full pages need to move from the full bin), nor has aligned blocks (aligned blocks need to be unaligned)
+    {
+      mi_block_t* const block = (mi_block_t*)p;
+      if mi_unlikely(mi_check_is_double_free(page, block)) return;
+      mi_check_padding(page, block);
+      mi_stat_free(page, block);
+      #if (MI_DEBUG>0) && !MI_TRACK_ENABLED  && !MI_TSAN
+      memset(block, MI_DEBUG_FREED, mi_page_block_size(page));
+      #endif
+      mi_track_free_size(p, mi_page_usable_size_of(page,block)); // faster then mi_usable_size as we already know the page and that p is unaligned
+      mi_block_set_next(page, block, page->local_free);
+      page->local_free = block;
+      if mi_unlikely(--page->used == 0) {   // using this expression generates better code than: page->used--; if (mi_page_all_free(page))
+        _mi_page_retire(page);
+      }
+    }
+    else {
+      // page is full or contains (inner) aligned blocks; use generic path
+      _mi_free_generic(segment, page, true, p);
+    }
+  }
+  else {
+    // not thread-local; use generic path
+    _mi_free_generic(segment, page, false, p);
+  }
+}
+
+// return true if successful
+bool _mi_free_delayed_block(mi_block_t* block) {
+  // get segment and page
+  const mi_segment_t* const segment = _mi_ptr_segment(block);
+  mi_assert_internal(_mi_ptr_cookie(segment) == segment->cookie);
+  mi_assert_internal(_mi_thread_id() == segment->thread_id);
+  mi_page_t* const page = _mi_segment_page_of(segment, block);
+
+  // Clear the no-delayed flag so delayed freeing is used again for this page.
+  // This must be done before collecting the free lists on this page -- otherwise
+  // some blocks may end up in the page `thread_free` list with no blocks in the
+  // heap `thread_delayed_free` list which may cause the page to be never freed!
+  // (it would only be freed if we happen to scan it in `mi_page_queue_find_free_ex`)
+  if (!_mi_page_try_use_delayed_free(page, MI_USE_DELAYED_FREE, false /* dont overwrite never delayed */)) {
+    return false;
+  }
+
+  // collect all other non-local frees to ensure up-to-date `used` count
+  _mi_page_free_collect(page, false);
+
+  // and free the block (possibly freeing the page as well since used is updated)
+  _mi_free_block(page, true, block);
+  return true;
+}
+
+// Bytes available in a block
+mi_decl_noinline static size_t mi_page_usable_aligned_size_of(const mi_segment_t* segment, const mi_page_t* page, const void* p) mi_attr_noexcept {
+  const mi_block_t* block = _mi_page_ptr_unalign(segment, page, p);
+  const size_t size = mi_page_usable_size_of(page, block);
+  const ptrdiff_t adjust = (uint8_t*)p - (uint8_t*)block;
+  mi_assert_internal(adjust >= 0 && (size_t)adjust <= size);
+  return (size - adjust);
+}
+
+static inline size_t _mi_usable_size(const void* p, const char* msg) mi_attr_noexcept {
+  if (p == NULL) return 0;
+  const mi_segment_t* const segment = mi_checked_ptr_segment(p, msg);
+  const mi_page_t* const page = _mi_segment_page_of(segment, p);
+  if mi_likely(!mi_page_has_aligned(page)) {
+    const mi_block_t* block = (const mi_block_t*)p;
+    return mi_page_usable_size_of(page, block);
+  }
+  else {
+    // split out to separate routine for improved code generation
+    return mi_page_usable_aligned_size_of(segment, page, p);
+  }
+}
+
+mi_decl_nodiscard size_t mi_usable_size(const void* p) mi_attr_noexcept {
+  return _mi_usable_size(p, "mi_usable_size");
+}
+
+
+// ------------------------------------------------------
+// Allocation extensions
+// ------------------------------------------------------
+
+void mi_free_size(void* p, size_t size) mi_attr_noexcept {
+  MI_UNUSED_RELEASE(size);
+  mi_assert(p == NULL || size <= _mi_usable_size(p,"mi_free_size"));
+  mi_free(p);
+}
+
+void mi_free_size_aligned(void* p, size_t size, size_t alignment) mi_attr_noexcept {
+  MI_UNUSED_RELEASE(alignment);
+  mi_assert(((uintptr_t)p % alignment) == 0);
+  mi_free_size(p,size);
+}
+
+void mi_free_aligned(void* p, size_t alignment) mi_attr_noexcept {
+  MI_UNUSED_RELEASE(alignment);
+  mi_assert(((uintptr_t)p % alignment) == 0);
+  mi_free(p);
+}
+
+mi_decl_nodiscard extern inline mi_decl_restrict void* mi_heap_calloc(mi_heap_t* heap, size_t count, size_t size) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(count,size,&total)) return NULL;
+  return mi_heap_zalloc(heap,total);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_calloc(size_t count, size_t size) mi_attr_noexcept {
+  return mi_heap_calloc(mi_prim_get_default_heap(),count,size);
+}
+
+// Uninitialized `calloc`
+mi_decl_nodiscard extern mi_decl_restrict void* mi_heap_mallocn(mi_heap_t* heap, size_t count, size_t size) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(count, size, &total)) return NULL;
+  return mi_heap_malloc(heap, total);
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_mallocn(size_t count, size_t size) mi_attr_noexcept {
+  return mi_heap_mallocn(mi_prim_get_default_heap(),count,size);
+}
+
+// Expand (or shrink) in place (or fail)
+void* mi_expand(void* p, size_t newsize) mi_attr_noexcept {
+  #if MI_PADDING
+  // we do not shrink/expand with padding enabled
+  MI_UNUSED(p); MI_UNUSED(newsize);
+  return NULL;
+  #else
+  if (p == NULL) return NULL;
+  const size_t size = _mi_usable_size(p,"mi_expand");
+  if (newsize > size) return NULL;
+  return p; // it fits
+  #endif
+}
+
+void* _mi_heap_realloc_zero(mi_heap_t* heap, void* p, size_t newsize, bool zero) mi_attr_noexcept {
+  // if p == NULL then behave as malloc.
+  // else if size == 0 then reallocate to a zero-sized block (and don't return NULL, just as mi_malloc(0)).
+  // (this means that returning NULL always indicates an error, and `p` will not have been freed in that case.)
+  const size_t size = _mi_usable_size(p,"mi_realloc"); // also works if p == NULL (with size 0)
+  if mi_unlikely(newsize <= size && newsize >= (size / 2) && newsize > 0) {  // note: newsize must be > 0 or otherwise we return NULL for realloc(NULL,0)
+    mi_assert_internal(p!=NULL);
+    // todo: do not track as the usable size is still the same in the free; adjust potential padding?
+    // mi_track_resize(p,size,newsize)
+    // if (newsize < size) { mi_track_mem_noaccess((uint8_t*)p + newsize, size - newsize); }
+    return p;  // reallocation still fits and not more than 50% waste
+  }
+  void* newp = mi_heap_malloc(heap,newsize);
+  if mi_likely(newp != NULL) {
+    if (zero && newsize > size) {
+      // also set last word in the previous allocation to zero to ensure any padding is zero-initialized
+      const size_t start = (size >= sizeof(intptr_t) ? size - sizeof(intptr_t) : 0);
+      _mi_memzero((uint8_t*)newp + start, newsize - start);
+    }
+    else if (newsize == 0) {
+      ((uint8_t*)newp)[0] = 0; // work around for applications that expect zero-reallocation to be zero initialized (issue #725)
+    }
+    if mi_likely(p != NULL) {
+      const size_t copysize = (newsize > size ? size : newsize);
+      mi_track_mem_defined(p,copysize);  // _mi_useable_size may be too large for byte precise memory tracking..
+      _mi_memcpy(newp, p, copysize);
+      mi_free(p); // only free the original pointer if successful
+    }
+  }
+  return newp;
+}
+
+mi_decl_nodiscard void* mi_heap_realloc(mi_heap_t* heap, void* p, size_t newsize) mi_attr_noexcept {
+  return _mi_heap_realloc_zero(heap, p, newsize, false);
+}
+
+mi_decl_nodiscard void* mi_heap_reallocn(mi_heap_t* heap, void* p, size_t count, size_t size) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(count, size, &total)) return NULL;
+  return mi_heap_realloc(heap, p, total);
+}
+
+
+// Reallocate but free `p` on errors
+mi_decl_nodiscard void* mi_heap_reallocf(mi_heap_t* heap, void* p, size_t newsize) mi_attr_noexcept {
+  void* newp = mi_heap_realloc(heap, p, newsize);
+  if (newp==NULL && p!=NULL) mi_free(p);
+  return newp;
+}
+
+mi_decl_nodiscard void* mi_heap_rezalloc(mi_heap_t* heap, void* p, size_t newsize) mi_attr_noexcept {
+  return _mi_heap_realloc_zero(heap, p, newsize, true);
+}
+
+mi_decl_nodiscard void* mi_heap_recalloc(mi_heap_t* heap, void* p, size_t count, size_t size) mi_attr_noexcept {
+  size_t total;
+  if (mi_count_size_overflow(count, size, &total)) return NULL;
+  return mi_heap_rezalloc(heap, p, total);
+}
+
+
+mi_decl_nodiscard void* mi_realloc(void* p, size_t newsize) mi_attr_noexcept {
+  return mi_heap_realloc(mi_prim_get_default_heap(),p,newsize);
+}
+
+mi_decl_nodiscard void* mi_reallocn(void* p, size_t count, size_t size) mi_attr_noexcept {
+  return mi_heap_reallocn(mi_prim_get_default_heap(),p,count,size);
+}
+
+// Reallocate but free `p` on errors
+mi_decl_nodiscard void* mi_reallocf(void* p, size_t newsize) mi_attr_noexcept {
+  return mi_heap_reallocf(mi_prim_get_default_heap(),p,newsize);
+}
+
+mi_decl_nodiscard void* mi_rezalloc(void* p, size_t newsize) mi_attr_noexcept {
+  return mi_heap_rezalloc(mi_prim_get_default_heap(), p, newsize);
+}
+
+mi_decl_nodiscard void* mi_recalloc(void* p, size_t count, size_t size) mi_attr_noexcept {
+  return mi_heap_recalloc(mi_prim_get_default_heap(), p, count, size);
+}
+
+
+
+// ------------------------------------------------------
+// strdup, strndup, and realpath
+// ------------------------------------------------------
+
+// `strdup` using mi_malloc
+mi_decl_nodiscard mi_decl_restrict char* mi_heap_strdup(mi_heap_t* heap, const char* s) mi_attr_noexcept {
+  if (s == NULL) return NULL;
+  size_t n = strlen(s);
+  char* t = (char*)mi_heap_malloc(heap,n+1);
+  if (t == NULL) return NULL;
+  _mi_memcpy(t, s, n);
+  t[n] = 0;
+  return t;
+}
+
+mi_decl_nodiscard mi_decl_restrict char* mi_strdup(const char* s) mi_attr_noexcept {
+  return mi_heap_strdup(mi_prim_get_default_heap(), s);
+}
+
+// `strndup` using mi_malloc
+mi_decl_nodiscard mi_decl_restrict char* mi_heap_strndup(mi_heap_t* heap, const char* s, size_t n) mi_attr_noexcept {
+  if (s == NULL) return NULL;
+  const char* end = (const char*)memchr(s, 0, n);  // find end of string in the first `n` characters (returns NULL if not found)
+  const size_t m = (end != NULL ? (size_t)(end - s) : n);  // `m` is the minimum of `n` or the end-of-string
+  mi_assert_internal(m <= n);
+  char* t = (char*)mi_heap_malloc(heap, m+1);
+  if (t == NULL) return NULL;
+  _mi_memcpy(t, s, m);
+  t[m] = 0;
+  return t;
+}
+
+mi_decl_nodiscard mi_decl_restrict char* mi_strndup(const char* s, size_t n) mi_attr_noexcept {
+  return mi_heap_strndup(mi_prim_get_default_heap(),s,n);
+}
+
+#ifndef __wasi__
+// `realpath` using mi_malloc
+#ifdef _WIN32
+#ifndef PATH_MAX
+#define PATH_MAX MAX_PATH
+#endif
+#include <windows.h>
+mi_decl_nodiscard mi_decl_restrict char* mi_heap_realpath(mi_heap_t* heap, const char* fname, char* resolved_name) mi_attr_noexcept {
+  // todo: use GetFullPathNameW to allow longer file names
+  char buf[PATH_MAX];
+  DWORD res = GetFullPathNameA(fname, PATH_MAX, (resolved_name == NULL ? buf : resolved_name), NULL);
+  if (res == 0) {
+    errno = GetLastError(); return NULL;
+  }
+  else if (res > PATH_MAX) {
+    errno = EINVAL; return NULL;
+  }
+  else if (resolved_name != NULL) {
+    return resolved_name;
+  }
+  else {
+    return mi_heap_strndup(heap, buf, PATH_MAX);
+  }
+}
+#else
+/*
+#include <unistd.h>  // pathconf
+static size_t mi_path_max(void) {
+  static size_t path_max = 0;
+  if (path_max <= 0) {
+    long m = pathconf("/",_PC_PATH_MAX);
+    if (m <= 0) path_max = 4096;      // guess
+    else if (m < 256) path_max = 256; // at least 256
+    else path_max = m;
+  }
+  return path_max;
+}
+*/
+char* mi_heap_realpath(mi_heap_t* heap, const char* fname, char* resolved_name) mi_attr_noexcept {
+  if (resolved_name != NULL) {
+    return realpath(fname,resolved_name);
+  }
+  else {
+    char* rname = realpath(fname, NULL);
+    if (rname == NULL) return NULL;
+    char* result = mi_heap_strdup(heap, rname);
+    free(rname);  // use regular free! (which may be redirected to our free but that's ok)
+    return result;
+  }
+  /*
+    const size_t n  = mi_path_max();
+    char* buf = (char*)mi_malloc(n+1);
+    if (buf == NULL) {
+      errno = ENOMEM;
+      return NULL;
+    }
+    char* rname  = realpath(fname,buf);
+    char* result = mi_heap_strndup(heap,rname,n); // ok if `rname==NULL`
+    mi_free(buf);
+    return result;
+  }
+  */
+}
+#endif
+
+mi_decl_nodiscard mi_decl_restrict char* mi_realpath(const char* fname, char* resolved_name) mi_attr_noexcept {
+  return mi_heap_realpath(mi_prim_get_default_heap(),fname,resolved_name);
+}
+#endif
+
+/*-------------------------------------------------------
+C++ new and new_aligned
+The standard requires calling into `get_new_handler` and
+throwing the bad_alloc exception on failure. If we compile
+with a C++ compiler we can implement this precisely. If we
+use a C compiler we cannot throw a `bad_alloc` exception
+but we call `exit` instead (i.e. not returning).
+-------------------------------------------------------*/
+
+#ifdef __cplusplus
+#include <new>
+static bool mi_try_new_handler(bool nothrow) {
+  #if defined(_MSC_VER) || (__cplusplus >= 201103L)
+    std::new_handler h = std::get_new_handler();
+  #else
+    std::new_handler h = std::set_new_handler();
+    std::set_new_handler(h);
+  #endif
+  if (h==NULL) {
+    _mi_error_message(ENOMEM, "out of memory in 'new'");
+    if (!nothrow) {
+      throw std::bad_alloc();
+    }
+    return false;
+  }
+  else {
+    h();
+    return true;
+  }
+}
+#else
+typedef void (*std_new_handler_t)(void);
+
+#if (defined(__GNUC__) || (defined(__clang__) && !defined(_MSC_VER)))  // exclude clang-cl, see issue #631
+std_new_handler_t __attribute__((weak)) _ZSt15get_new_handlerv(void) {
+  return NULL;
+}
+static std_new_handler_t mi_get_new_handler(void) {
+  return _ZSt15get_new_handlerv();
+}
+#else
+// note: on windows we could dynamically link to `?get_new_handler@std@@YAP6AXXZXZ`.
+static std_new_handler_t mi_get_new_handler() {
+  return NULL;
+}
+#endif
+
+static bool mi_try_new_handler(bool nothrow) {
+  std_new_handler_t h = mi_get_new_handler();
+  if (h==NULL) {
+    _mi_error_message(ENOMEM, "out of memory in 'new'");
+    if (!nothrow) {
+      abort();  // cannot throw in plain C, use abort
+    }
+    return false;
+  }
+  else {
+    h();
+    return true;
+  }
+}
+#endif
+
+mi_decl_export mi_decl_noinline void* mi_heap_try_new(mi_heap_t* heap, size_t size, bool nothrow ) {
+  void* p = NULL;
+  while(p == NULL && mi_try_new_handler(nothrow)) {
+    p = mi_heap_malloc(heap,size);
+  }
+  return p;
+}
+
+static mi_decl_noinline void* mi_try_new(size_t size, bool nothrow) {
+  return mi_heap_try_new(mi_prim_get_default_heap(), size, nothrow);
+}
+
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_alloc_new(mi_heap_t* heap, size_t size) {
+  void* p = mi_heap_malloc(heap,size);
+  if mi_unlikely(p == NULL) return mi_heap_try_new(heap, size, false);
+  return p;
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_new(size_t size) {
+  return mi_heap_alloc_new(mi_prim_get_default_heap(), size);
+}
+
+
+mi_decl_nodiscard mi_decl_restrict void* mi_heap_alloc_new_n(mi_heap_t* heap, size_t count, size_t size) {
+  size_t total;
+  if mi_unlikely(mi_count_size_overflow(count, size, &total)) {
+    mi_try_new_handler(false);  // on overflow we invoke the try_new_handler once to potentially throw std::bad_alloc
+    return NULL;
+  }
+  else {
+    return mi_heap_alloc_new(heap,total);
+  }
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_new_n(size_t count, size_t size) {
+  return mi_heap_alloc_new_n(mi_prim_get_default_heap(), size, count);
+}
+
+
+mi_decl_nodiscard mi_decl_restrict void* mi_new_nothrow(size_t size) mi_attr_noexcept {
+  void* p = mi_malloc(size);
+  if mi_unlikely(p == NULL) return mi_try_new(size, true);
+  return p;
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_new_aligned(size_t size, size_t alignment) {
+  void* p;
+  do {
+    p = mi_malloc_aligned(size, alignment);
+  }
+  while(p == NULL && mi_try_new_handler(false));
+  return p;
+}
+
+mi_decl_nodiscard mi_decl_restrict void* mi_new_aligned_nothrow(size_t size, size_t alignment) mi_attr_noexcept {
+  void* p;
+  do {
+    p = mi_malloc_aligned(size, alignment);
+  }
+  while(p == NULL && mi_try_new_handler(true));
+  return p;
+}
+
+mi_decl_nodiscard void* mi_new_realloc(void* p, size_t newsize) {
+  void* q;
+  do {
+    q = mi_realloc(p, newsize);
+  } while (q == NULL && mi_try_new_handler(false));
+  return q;
+}
+
+mi_decl_nodiscard void* mi_new_reallocn(void* p, size_t newcount, size_t size) {
+  size_t total;
+  if mi_unlikely(mi_count_size_overflow(newcount, size, &total)) {
+    mi_try_new_handler(false);  // on overflow we invoke the try_new_handler once to potentially throw std::bad_alloc
+    return NULL;
+  }
+  else {
+    return mi_new_realloc(p, total);
+  }
+}
+
+// ------------------------------------------------------
+// ensure explicit external inline definitions are emitted!
+// ------------------------------------------------------
+
+#ifdef __cplusplus
+void* _mi_externs[] = {
+  (void*)&_mi_page_malloc,
+  (void*)&_mi_heap_malloc_zero,
+  (void*)&_mi_heap_malloc_zero_ex,
+  (void*)&mi_malloc,
+  (void*)&mi_malloc_small,
+  (void*)&mi_zalloc_small,
+  (void*)&mi_heap_malloc,
+  (void*)&mi_heap_zalloc,
+  (void*)&mi_heap_malloc_small,
+  // (void*)&mi_heap_alloc_new,
+  // (void*)&mi_heap_alloc_new_n
+};
+#endif
diff --git a/Objects/mimalloc/arena.c b/Objects/mimalloc/arena.c
new file mode 100644
index 00000000000000..f8883603860dce
--- /dev/null
+++ b/Objects/mimalloc/arena.c
@@ -0,0 +1,935 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2019-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* ----------------------------------------------------------------------------
+"Arenas" are fixed area's of OS memory from which we can allocate
+large blocks (>= MI_ARENA_MIN_BLOCK_SIZE, 4MiB).
+In contrast to the rest of mimalloc, the arenas are shared between
+threads and need to be accessed using atomic operations.
+
+Arenas are used to for huge OS page (1GiB) reservations or for reserving
+OS memory upfront which can be improve performance or is sometimes needed
+on embedded devices. We can also employ this with WASI or `sbrk` systems
+to reserve large arenas upfront and be able to reuse the memory more effectively.
+
+The arena allocation needs to be thread safe and we use an atomic bitmap to allocate.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+
+#include <string.h>  // memset
+#include <errno.h>   // ENOMEM
+
+#include "bitmap.h"  // atomic bitmap
+
+/* -----------------------------------------------------------
+  Arena allocation
+----------------------------------------------------------- */
+
+// Block info: bit 0 contains the `in_use` bit, the upper bits the
+// size in count of arena blocks.
+typedef uintptr_t mi_block_info_t;
+#define MI_ARENA_BLOCK_SIZE   (MI_SEGMENT_SIZE)        // 64MiB  (must be at least MI_SEGMENT_ALIGN)
+#define MI_ARENA_MIN_OBJ_SIZE (MI_ARENA_BLOCK_SIZE/2)  // 32MiB
+#define MI_MAX_ARENAS         (112)                    // not more than 126 (since we use 7 bits in the memid and an arena index + 1)
+
+// A memory arena descriptor
+typedef struct mi_arena_s {
+  mi_arena_id_t id;                       // arena id; 0 for non-specific
+  mi_memid_t memid;                       // memid of the memory area
+  _Atomic(uint8_t*) start;                // the start of the memory area
+  size_t   block_count;                   // size of the area in arena blocks (of `MI_ARENA_BLOCK_SIZE`)
+  size_t   field_count;                   // number of bitmap fields (where `field_count * MI_BITMAP_FIELD_BITS >= block_count`)
+  size_t   meta_size;                     // size of the arena structure itself (including its bitmaps)
+  mi_memid_t meta_memid;                  // memid of the arena structure itself (OS or static allocation)
+  int      numa_node;                     // associated NUMA node
+  bool     exclusive;                     // only allow allocations if specifically for this arena
+  bool     is_large;                      // memory area consists of large- or huge OS pages (always committed)
+  _Atomic(size_t) search_idx;             // optimization to start the search for free blocks
+  _Atomic(mi_msecs_t) purge_expire;       // expiration time when blocks should be decommitted from `blocks_decommit`.
+  mi_bitmap_field_t* blocks_dirty;        // are the blocks potentially non-zero?
+  mi_bitmap_field_t* blocks_committed;    // are the blocks committed? (can be NULL for memory that cannot be decommitted)
+  mi_bitmap_field_t* blocks_purge;        // blocks that can be (reset) decommitted. (can be NULL for memory that cannot be (reset) decommitted)
+  mi_bitmap_field_t  blocks_inuse[1];     // in-place bitmap of in-use blocks (of size `field_count`)
+} mi_arena_t;
+
+
+// The available arenas
+static mi_decl_cache_align _Atomic(mi_arena_t*) mi_arenas[MI_MAX_ARENAS];
+static mi_decl_cache_align _Atomic(size_t)      mi_arena_count; // = 0
+
+
+//static bool mi_manage_os_memory_ex2(void* start, size_t size, bool is_large, int numa_node, bool exclusive, mi_memid_t memid, mi_arena_id_t* arena_id) mi_attr_noexcept;
+
+/* -----------------------------------------------------------
+  Arena id's
+  id = arena_index + 1
+----------------------------------------------------------- */
+
+static size_t mi_arena_id_index(mi_arena_id_t id) {
+  return (size_t)(id <= 0 ? MI_MAX_ARENAS : id - 1);
+}
+
+static mi_arena_id_t mi_arena_id_create(size_t arena_index) {
+  mi_assert_internal(arena_index < MI_MAX_ARENAS);
+  return (int)arena_index + 1;
+}
+
+mi_arena_id_t _mi_arena_id_none(void) {
+  return 0;
+}
+
+static bool mi_arena_id_is_suitable(mi_arena_id_t arena_id, bool arena_is_exclusive, mi_arena_id_t req_arena_id) {
+  return ((!arena_is_exclusive && req_arena_id == _mi_arena_id_none()) ||
+          (arena_id == req_arena_id));
+}
+
+bool _mi_arena_memid_is_suitable(mi_memid_t memid, mi_arena_id_t request_arena_id) {
+  if (memid.memkind == MI_MEM_ARENA) {
+    return mi_arena_id_is_suitable(memid.mem.arena.id, memid.mem.arena.is_exclusive, request_arena_id);
+  }
+  else {
+    return mi_arena_id_is_suitable(0, false, request_arena_id);
+  }
+}
+
+bool _mi_arena_memid_is_os_allocated(mi_memid_t memid) {
+  return (memid.memkind == MI_MEM_OS);
+}
+
+/* -----------------------------------------------------------
+  Arena allocations get a (currently) 16-bit memory id where the
+  lower 8 bits are the arena id, and the upper bits the block index.
+----------------------------------------------------------- */
+
+static size_t mi_block_count_of_size(size_t size) {
+  return _mi_divide_up(size, MI_ARENA_BLOCK_SIZE);
+}
+
+static size_t mi_arena_block_size(size_t bcount) {
+  return (bcount * MI_ARENA_BLOCK_SIZE);
+}
+
+static size_t mi_arena_size(mi_arena_t* arena) {
+  return mi_arena_block_size(arena->block_count);
+}
+
+static mi_memid_t mi_memid_create_arena(mi_arena_id_t id, bool is_exclusive, mi_bitmap_index_t bitmap_index) {
+  mi_memid_t memid = _mi_memid_create(MI_MEM_ARENA);
+  memid.mem.arena.id = id;
+  memid.mem.arena.block_index = bitmap_index;
+  memid.mem.arena.is_exclusive = is_exclusive;
+  return memid;
+}
+
+static bool mi_arena_memid_indices(mi_memid_t memid, size_t* arena_index, mi_bitmap_index_t* bitmap_index) {
+  mi_assert_internal(memid.memkind == MI_MEM_ARENA);
+  *arena_index = mi_arena_id_index(memid.mem.arena.id);
+  *bitmap_index = memid.mem.arena.block_index;
+  return memid.mem.arena.is_exclusive;
+}
+
+
+
+/* -----------------------------------------------------------
+  Special static area for mimalloc internal structures
+  to avoid OS calls (for example, for the arena metadata)
+----------------------------------------------------------- */
+
+#define MI_ARENA_STATIC_MAX  (MI_INTPTR_SIZE*MI_KiB)  // 8 KiB on 64-bit
+
+static uint8_t mi_arena_static[MI_ARENA_STATIC_MAX];
+static _Atomic(size_t) mi_arena_static_top;
+
+static void* mi_arena_static_zalloc(size_t size, size_t alignment, mi_memid_t* memid) {
+  *memid = _mi_memid_none();
+  if (size == 0 || size > MI_ARENA_STATIC_MAX) return NULL;
+  if ((mi_atomic_load_relaxed(&mi_arena_static_top) + size) > MI_ARENA_STATIC_MAX) return NULL;
+
+  // try to claim space
+  if (alignment == 0) { alignment = 1; }
+  const size_t oversize = size + alignment - 1;
+  if (oversize > MI_ARENA_STATIC_MAX) return NULL;
+  const size_t oldtop = mi_atomic_add_acq_rel(&mi_arena_static_top, oversize);
+  size_t top = oldtop + oversize;
+  if (top > MI_ARENA_STATIC_MAX) {
+    // try to roll back, ok if this fails
+    mi_atomic_cas_strong_acq_rel(&mi_arena_static_top, &top, oldtop);
+    return NULL;
+  }
+
+  // success
+  *memid = _mi_memid_create(MI_MEM_STATIC);
+  const size_t start = _mi_align_up(oldtop, alignment);
+  uint8_t* const p = &mi_arena_static[start];
+  _mi_memzero(p, size);
+  return p;
+}
+
+static void* mi_arena_meta_zalloc(size_t size, mi_memid_t* memid, mi_stats_t* stats) {
+  *memid = _mi_memid_none();
+
+  // try static
+  void* p = mi_arena_static_zalloc(size, MI_ALIGNMENT_MAX, memid);
+  if (p != NULL) return p;
+
+  // or fall back to the OS
+  return _mi_os_alloc(size, memid, stats);
+}
+
+static void mi_arena_meta_free(void* p, mi_memid_t memid, size_t size, mi_stats_t* stats) {
+  if (mi_memkind_is_os(memid.memkind)) {
+    _mi_os_free(p, size, memid, stats);
+  }
+  else {
+    mi_assert(memid.memkind == MI_MEM_STATIC);
+  }
+}
+
+static void* mi_arena_block_start(mi_arena_t* arena, mi_bitmap_index_t bindex) {
+  return (arena->start + mi_arena_block_size(mi_bitmap_index_bit(bindex)));
+}
+
+
+/* -----------------------------------------------------------
+  Thread safe allocation in an arena
+----------------------------------------------------------- */
+
+// claim the `blocks_inuse` bits
+static bool mi_arena_try_claim(mi_arena_t* arena, size_t blocks, mi_bitmap_index_t* bitmap_idx)
+{
+  size_t idx = 0; // mi_atomic_load_relaxed(&arena->search_idx);  // start from last search; ok to be relaxed as the exact start does not matter
+  if (_mi_bitmap_try_find_from_claim_across(arena->blocks_inuse, arena->field_count, idx, blocks, bitmap_idx)) {
+    mi_atomic_store_relaxed(&arena->search_idx, mi_bitmap_index_field(*bitmap_idx));  // start search from found location next time around
+    return true;
+  };
+  return false;
+}
+
+
+/* -----------------------------------------------------------
+  Arena Allocation
+----------------------------------------------------------- */
+
+static mi_decl_noinline void* mi_arena_try_alloc_at(mi_arena_t* arena, size_t arena_index, size_t needed_bcount,
+                                                    bool commit, mi_memid_t* memid, mi_os_tld_t* tld)
+{
+  MI_UNUSED(arena_index);
+  mi_assert_internal(mi_arena_id_index(arena->id) == arena_index);
+
+  mi_bitmap_index_t bitmap_index;
+  if (!mi_arena_try_claim(arena, needed_bcount, &bitmap_index)) return NULL;
+
+  // claimed it!
+  void* p = mi_arena_block_start(arena, bitmap_index);
+  *memid = mi_memid_create_arena(arena->id, arena->exclusive, bitmap_index);
+  memid->is_pinned = arena->memid.is_pinned;
+
+  // none of the claimed blocks should be scheduled for a decommit
+  if (arena->blocks_purge != NULL) {
+    // this is thread safe as a potential purge only decommits parts that are not yet claimed as used (in `blocks_inuse`).
+    _mi_bitmap_unclaim_across(arena->blocks_purge, arena->field_count, needed_bcount, bitmap_index);
+  }
+
+  // set the dirty bits (todo: no need for an atomic op here?)
+  if (arena->memid.initially_zero && arena->blocks_dirty != NULL) {
+    memid->initially_zero = _mi_bitmap_claim_across(arena->blocks_dirty, arena->field_count, needed_bcount, bitmap_index, NULL);
+  }
+
+  // set commit state
+  if (arena->blocks_committed == NULL) {
+    // always committed
+    memid->initially_committed = true;
+  }
+  else if (commit) {
+    // commit requested, but the range may not be committed as a whole: ensure it is committed now
+    memid->initially_committed = true;
+    bool any_uncommitted;
+    _mi_bitmap_claim_across(arena->blocks_committed, arena->field_count, needed_bcount, bitmap_index, &any_uncommitted);
+    if (any_uncommitted) {
+      bool commit_zero = false;
+      if (!_mi_os_commit(p, mi_arena_block_size(needed_bcount), &commit_zero, tld->stats)) {
+        memid->initially_committed = false;
+      }
+      else {
+        if (commit_zero) { memid->initially_zero = true; }
+      }
+    }
+  }
+  else {
+    // no need to commit, but check if already fully committed
+    memid->initially_committed = _mi_bitmap_is_claimed_across(arena->blocks_committed, arena->field_count, needed_bcount, bitmap_index);
+  }
+
+  return p;
+}
+
+// allocate in a speficic arena
+static void* mi_arena_try_alloc_at_id(mi_arena_id_t arena_id, bool match_numa_node, int numa_node, size_t size, size_t alignment,
+                                       bool commit, bool allow_large, mi_arena_id_t req_arena_id, mi_memid_t* memid, mi_os_tld_t* tld )
+{
+  MI_UNUSED_RELEASE(alignment);
+  mi_assert_internal(alignment <= MI_SEGMENT_ALIGN);
+  const size_t bcount = mi_block_count_of_size(size);
+  const size_t arena_index = mi_arena_id_index(arena_id);
+  mi_assert_internal(arena_index < mi_atomic_load_relaxed(&mi_arena_count));
+  mi_assert_internal(size <= mi_arena_block_size(bcount));
+
+  // Check arena suitability
+  mi_arena_t* arena = mi_atomic_load_ptr_acquire(mi_arena_t, &mi_arenas[arena_index]);
+  if (arena == NULL) return NULL;
+  if (!allow_large && arena->is_large) return NULL;
+  if (!mi_arena_id_is_suitable(arena->id, arena->exclusive, req_arena_id)) return NULL;
+  if (req_arena_id == _mi_arena_id_none()) { // in not specific, check numa affinity
+    const bool numa_suitable = (numa_node < 0 || arena->numa_node < 0 || arena->numa_node == numa_node);
+    if (match_numa_node) { if (!numa_suitable) return NULL; }
+                    else { if (numa_suitable) return NULL; }
+  }
+
+  // try to allocate
+  void* p = mi_arena_try_alloc_at(arena, arena_index, bcount, commit, memid, tld);
+  mi_assert_internal(p == NULL || _mi_is_aligned(p, alignment));
+  return p;
+}
+
+
+// allocate from an arena with fallback to the OS
+static mi_decl_noinline void* mi_arena_try_alloc(int numa_node, size_t size, size_t alignment,
+                                                  bool commit, bool allow_large,
+                                                  mi_arena_id_t req_arena_id, mi_memid_t* memid, mi_os_tld_t* tld )
+{
+  MI_UNUSED(alignment);
+  mi_assert_internal(alignment <= MI_SEGMENT_ALIGN);
+  const size_t max_arena = mi_atomic_load_relaxed(&mi_arena_count);
+  if mi_likely(max_arena == 0) return NULL;
+
+  if (req_arena_id != _mi_arena_id_none()) {
+    // try a specific arena if requested
+    if (mi_arena_id_index(req_arena_id) < max_arena) {
+      void* p = mi_arena_try_alloc_at_id(req_arena_id, true, numa_node, size, alignment, commit, allow_large, req_arena_id, memid, tld);
+      if (p != NULL) return p;
+    }
+  }
+  else {
+    // try numa affine allocation
+    for (size_t i = 0; i < max_arena; i++) {
+      void* p = mi_arena_try_alloc_at_id(mi_arena_id_create(i), true, numa_node, size, alignment, commit, allow_large, req_arena_id, memid, tld);
+      if (p != NULL) return p;
+    }
+
+    // try from another numa node instead..
+    if (numa_node >= 0) {  // if numa_node was < 0 (no specific affinity requested), all arena's have been tried already
+      for (size_t i = 0; i < max_arena; i++) {
+        void* p = mi_arena_try_alloc_at_id(mi_arena_id_create(i), false /* only proceed if not numa local */, numa_node, size, alignment, commit, allow_large, req_arena_id, memid, tld);
+        if (p != NULL) return p;
+      }
+    }
+  }
+  return NULL;
+}
+
+// try to reserve a fresh arena space
+static bool mi_arena_reserve(size_t req_size, bool allow_large, mi_arena_id_t req_arena_id, mi_arena_id_t *arena_id)
+{
+  if (_mi_preloading()) return false;  // use OS only while pre loading
+  if (req_arena_id != _mi_arena_id_none()) return false;
+
+  const size_t arena_count = mi_atomic_load_acquire(&mi_arena_count);
+  if (arena_count > (MI_MAX_ARENAS - 4)) return false;
+
+  size_t arena_reserve = mi_option_get_size(mi_option_arena_reserve);
+  if (arena_reserve == 0) return false;
+
+  if (!_mi_os_has_virtual_reserve()) {
+    arena_reserve = arena_reserve/4;  // be conservative if virtual reserve is not supported (for some embedded systems for example)
+  }
+  arena_reserve = _mi_align_up(arena_reserve, MI_ARENA_BLOCK_SIZE);
+  if (arena_count >= 8 && arena_count <= 128) {
+    arena_reserve = ((size_t)1<<(arena_count/8)) * arena_reserve;  // scale up the arena sizes exponentially
+  }
+  if (arena_reserve < req_size) return false;  // should be able to at least handle the current allocation size
+
+  // commit eagerly?
+  bool arena_commit = false;
+  if (mi_option_get(mi_option_arena_eager_commit) == 2)      { arena_commit = _mi_os_has_overcommit(); }
+  else if (mi_option_get(mi_option_arena_eager_commit) == 1) { arena_commit = true; }
+
+  return (mi_reserve_os_memory_ex(arena_reserve, arena_commit, allow_large, false /* exclusive */, arena_id) == 0);
+}
+
+
+void* _mi_arena_alloc_aligned(size_t size, size_t alignment, size_t align_offset, bool commit, bool allow_large,
+                              mi_arena_id_t req_arena_id, mi_memid_t* memid, mi_os_tld_t* tld)
+{
+  mi_assert_internal(memid != NULL && tld != NULL);
+  mi_assert_internal(size > 0);
+  *memid = _mi_memid_none();
+
+  const int numa_node = _mi_os_numa_node(tld); // current numa node
+
+  // try to allocate in an arena if the alignment is small enough and the object is not too small (as for heap meta data)
+  if (size >= MI_ARENA_MIN_OBJ_SIZE && alignment <= MI_SEGMENT_ALIGN && align_offset == 0) {
+    void* p = mi_arena_try_alloc(numa_node, size, alignment, commit, allow_large, req_arena_id, memid, tld);
+    if (p != NULL) return p;
+
+    // otherwise, try to first eagerly reserve a new arena
+    if (req_arena_id == _mi_arena_id_none()) {
+      mi_arena_id_t arena_id = 0;
+      if (mi_arena_reserve(size, allow_large, req_arena_id, &arena_id)) {
+        // and try allocate in there
+        mi_assert_internal(req_arena_id == _mi_arena_id_none());
+        p = mi_arena_try_alloc_at_id(arena_id, true, numa_node, size, alignment, commit, allow_large, req_arena_id, memid, tld);
+        if (p != NULL) return p;
+      }
+    }
+  }
+
+  // if we cannot use OS allocation, return NULL
+  if (mi_option_is_enabled(mi_option_limit_os_alloc) || req_arena_id != _mi_arena_id_none()) {
+    errno = ENOMEM;
+    return NULL;
+  }
+
+  // finally, fall back to the OS
+  if (align_offset > 0) {
+    return _mi_os_alloc_aligned_at_offset(size, alignment, align_offset, commit, allow_large, memid, tld->stats);
+  }
+  else {
+    return _mi_os_alloc_aligned(size, alignment, commit, allow_large, memid, tld->stats);
+  }
+}
+
+void* _mi_arena_alloc(size_t size, bool commit, bool allow_large, mi_arena_id_t req_arena_id, mi_memid_t* memid, mi_os_tld_t* tld)
+{
+  return _mi_arena_alloc_aligned(size, MI_ARENA_BLOCK_SIZE, 0, commit, allow_large, req_arena_id, memid, tld);
+}
+
+
+void* mi_arena_area(mi_arena_id_t arena_id, size_t* size) {
+  if (size != NULL) *size = 0;
+  size_t arena_index = mi_arena_id_index(arena_id);
+  if (arena_index >= MI_MAX_ARENAS) return NULL;
+  mi_arena_t* arena = mi_atomic_load_ptr_acquire(mi_arena_t, &mi_arenas[arena_index]);
+  if (arena == NULL) return NULL;
+  if (size != NULL) { *size = mi_arena_block_size(arena->block_count); }
+  return arena->start;
+}
+
+
+/* -----------------------------------------------------------
+  Arena purge
+----------------------------------------------------------- */
+
+static long mi_arena_purge_delay(void) {
+  // <0 = no purging allowed, 0=immediate purging, >0=milli-second delay
+  return (mi_option_get(mi_option_purge_delay) * mi_option_get(mi_option_arena_purge_mult));
+}
+
+// reset or decommit in an arena and update the committed/decommit bitmaps
+// assumes we own the area (i.e. blocks_in_use is claimed by us)
+static void mi_arena_purge(mi_arena_t* arena, size_t bitmap_idx, size_t blocks, mi_stats_t* stats) {
+  mi_assert_internal(arena->blocks_committed != NULL);
+  mi_assert_internal(arena->blocks_purge != NULL);
+  mi_assert_internal(!arena->memid.is_pinned);
+  const size_t size = mi_arena_block_size(blocks);
+  void* const p = mi_arena_block_start(arena, bitmap_idx);
+  bool needs_recommit;
+  if (_mi_bitmap_is_claimed_across(arena->blocks_committed, arena->field_count, blocks, bitmap_idx)) {
+    // all blocks are committed, we can purge freely
+    needs_recommit = _mi_os_purge(p, size, stats);
+  }
+  else {
+    // some blocks are not committed -- this can happen when a partially committed block is freed
+    // in `_mi_arena_free` and it is conservatively marked as uncommitted but still scheduled for a purge
+    // we need to ensure we do not try to reset (as that may be invalid for uncommitted memory),
+    // and also undo the decommit stats (as it was already adjusted)
+    mi_assert_internal(mi_option_is_enabled(mi_option_purge_decommits));
+    needs_recommit = _mi_os_purge_ex(p, size, false /* allow reset? */, stats);
+    _mi_stat_increase(&stats->committed, size);
+  }
+
+  // clear the purged blocks
+  _mi_bitmap_unclaim_across(arena->blocks_purge, arena->field_count, blocks, bitmap_idx);
+  // update committed bitmap
+  if (needs_recommit) {
+    _mi_bitmap_unclaim_across(arena->blocks_committed, arena->field_count, blocks, bitmap_idx);
+  }
+}
+
+// Schedule a purge. This is usually delayed to avoid repeated decommit/commit calls.
+// Note: assumes we (still) own the area as we may purge immediately
+static void mi_arena_schedule_purge(mi_arena_t* arena, size_t bitmap_idx, size_t blocks, mi_stats_t* stats) {
+  mi_assert_internal(arena->blocks_purge != NULL);
+  const long delay = mi_arena_purge_delay();
+  if (delay < 0) return;  // is purging allowed at all?
+
+  if (_mi_preloading() || delay == 0) {
+    // decommit directly
+    mi_arena_purge(arena, bitmap_idx, blocks, stats);
+  }
+  else {
+    // schedule decommit
+    mi_msecs_t expire = mi_atomic_loadi64_relaxed(&arena->purge_expire);
+    if (expire != 0) {
+      mi_atomic_addi64_acq_rel(&arena->purge_expire, delay/10);  // add smallish extra delay
+    }
+    else {
+      mi_atomic_storei64_release(&arena->purge_expire, _mi_clock_now() + delay);
+    }
+    _mi_bitmap_claim_across(arena->blocks_purge, arena->field_count, blocks, bitmap_idx, NULL);
+  }
+}
+
+// purge a range of blocks
+// return true if the full range was purged.
+// assumes we own the area (i.e. blocks_in_use is claimed by us)
+static bool mi_arena_purge_range(mi_arena_t* arena, size_t idx, size_t startidx, size_t bitlen, size_t purge, mi_stats_t* stats) {
+  const size_t endidx = startidx + bitlen;
+  size_t bitidx = startidx;
+  bool all_purged = false;
+  while (bitidx < endidx) {
+    // count consequetive ones in the purge mask
+    size_t count = 0;
+    while (bitidx + count < endidx && (purge & ((size_t)1 << (bitidx + count))) != 0) {
+      count++;
+    }
+    if (count > 0) {
+      // found range to be purged
+      const mi_bitmap_index_t range_idx = mi_bitmap_index_create(idx, bitidx);
+      mi_arena_purge(arena, range_idx, count, stats);
+      if (count == bitlen) {
+        all_purged = true;
+      }
+    }
+    bitidx += (count+1); // +1 to skip the zero bit (or end)
+  }
+  return all_purged;
+}
+
+// returns true if anything was purged
+static bool mi_arena_try_purge(mi_arena_t* arena, mi_msecs_t now, bool force, mi_stats_t* stats)
+{
+  if (arena->memid.is_pinned || arena->blocks_purge == NULL) return false;
+  mi_msecs_t expire = mi_atomic_loadi64_relaxed(&arena->purge_expire);
+  if (expire == 0) return false;
+  if (!force && expire > now) return false;
+
+  // reset expire (if not already set concurrently)
+  mi_atomic_casi64_strong_acq_rel(&arena->purge_expire, &expire, 0);
+
+  // potential purges scheduled, walk through the bitmap
+  bool any_purged = false;
+  bool full_purge = true;
+  for (size_t i = 0; i < arena->field_count; i++) {
+    size_t purge = mi_atomic_load_relaxed(&arena->blocks_purge[i]);
+    if (purge != 0) {
+      size_t bitidx = 0;
+      while (bitidx < MI_BITMAP_FIELD_BITS) {
+        // find consequetive range of ones in the purge mask
+        size_t bitlen = 0;
+        while (bitidx + bitlen < MI_BITMAP_FIELD_BITS && (purge & ((size_t)1 << (bitidx + bitlen))) != 0) {
+          bitlen++;
+        }
+        // try to claim the longest range of corresponding in_use bits
+        const mi_bitmap_index_t bitmap_index = mi_bitmap_index_create(i, bitidx);
+        while( bitlen > 0 ) {
+          if (_mi_bitmap_try_claim(arena->blocks_inuse, arena->field_count, bitlen, bitmap_index)) {
+            break;
+          }
+          bitlen--;
+        }
+        // actual claimed bits at `in_use`
+        if (bitlen > 0) {
+          // read purge again now that we have the in_use bits
+          purge = mi_atomic_load_acquire(&arena->blocks_purge[i]);
+          if (!mi_arena_purge_range(arena, i, bitidx, bitlen, purge, stats)) {
+            full_purge = false;
+          }
+          any_purged = true;
+          // release the claimed `in_use` bits again
+          _mi_bitmap_unclaim(arena->blocks_inuse, arena->field_count, bitlen, bitmap_index);
+        }
+        bitidx += (bitlen+1);  // +1 to skip the zero (or end)
+      } // while bitidx
+    } // purge != 0
+  }
+  // if not fully purged, make sure to purge again in the future
+  if (!full_purge) {
+    const long delay = mi_arena_purge_delay();
+    mi_msecs_t expected = 0;
+    mi_atomic_casi64_strong_acq_rel(&arena->purge_expire,&expected,_mi_clock_now() + delay);
+  }
+  return any_purged;
+}
+
+static void mi_arenas_try_purge( bool force, bool visit_all, mi_stats_t* stats ) {
+  if (_mi_preloading() || mi_arena_purge_delay() <= 0) return;  // nothing will be scheduled
+
+  const size_t max_arena = mi_atomic_load_acquire(&mi_arena_count);
+  if (max_arena == 0) return;
+
+  // allow only one thread to purge at a time
+  static mi_atomic_guard_t purge_guard;
+  mi_atomic_guard(&purge_guard)
+  {
+    mi_msecs_t now = _mi_clock_now();
+    size_t max_purge_count = (visit_all ? max_arena : 1);
+    for (size_t i = 0; i < max_arena; i++) {
+      mi_arena_t* arena = mi_atomic_load_ptr_acquire(mi_arena_t, &mi_arenas[i]);
+      if (arena != NULL) {
+        if (mi_arena_try_purge(arena, now, force, stats)) {
+          if (max_purge_count <= 1) break;
+          max_purge_count--;
+        }
+      }
+    }
+  }
+}
+
+
+/* -----------------------------------------------------------
+  Arena free
+----------------------------------------------------------- */
+
+void _mi_arena_free(void* p, size_t size, size_t committed_size, mi_memid_t memid, mi_stats_t* stats) {
+  mi_assert_internal(size > 0 && stats != NULL);
+  mi_assert_internal(committed_size <= size);
+  if (p==NULL) return;
+  if (size==0) return;
+  const bool all_committed = (committed_size == size);
+
+  if (mi_memkind_is_os(memid.memkind)) {
+    // was a direct OS allocation, pass through
+    if (!all_committed && committed_size > 0) {
+      // if partially committed, adjust the committed stats (as `_mi_os_free` will increase decommit by the full size)
+      _mi_stat_decrease(&stats->committed, committed_size);
+    }
+    _mi_os_free(p, size, memid, stats);
+  }
+  else if (memid.memkind == MI_MEM_ARENA) {
+    // allocated in an arena
+    size_t arena_idx;
+    size_t bitmap_idx;
+    mi_arena_memid_indices(memid, &arena_idx, &bitmap_idx);
+    mi_assert_internal(arena_idx < MI_MAX_ARENAS);
+    mi_arena_t* arena = mi_atomic_load_ptr_acquire(mi_arena_t,&mi_arenas[arena_idx]);
+    mi_assert_internal(arena != NULL);
+    const size_t blocks = mi_block_count_of_size(size);
+
+    // checks
+    if (arena == NULL) {
+      _mi_error_message(EINVAL, "trying to free from non-existent arena: %p, size %zu, memid: 0x%zx\n", p, size, memid);
+      return;
+    }
+    mi_assert_internal(arena->field_count > mi_bitmap_index_field(bitmap_idx));
+    if (arena->field_count <= mi_bitmap_index_field(bitmap_idx)) {
+      _mi_error_message(EINVAL, "trying to free from non-existent arena block: %p, size %zu, memid: 0x%zx\n", p, size, memid);
+      return;
+    }
+
+    // need to set all memory to undefined as some parts may still be marked as no_access (like padding etc.)
+    mi_track_mem_undefined(p,size);
+
+    // potentially decommit
+    if (arena->memid.is_pinned || arena->blocks_committed == NULL) {
+      mi_assert_internal(all_committed);
+    }
+    else {
+      mi_assert_internal(arena->blocks_committed != NULL);
+      mi_assert_internal(arena->blocks_purge != NULL);
+
+      if (!all_committed) {
+        // mark the entire range as no longer committed (so we recommit the full range when re-using)
+        _mi_bitmap_unclaim_across(arena->blocks_committed, arena->field_count, blocks, bitmap_idx);
+        mi_track_mem_noaccess(p,size);
+        if (committed_size > 0) {
+          // if partially committed, adjust the committed stats (is it will be recommitted when re-using)
+          // in the delayed purge, we now need to not count a decommit if the range is not marked as committed.
+          _mi_stat_decrease(&stats->committed, committed_size);
+        }
+        // note: if not all committed, it may be that the purge will reset/decommit the entire range
+        // that contains already decommitted parts. Since purge consistently uses reset or decommit that
+        // works (as we should never reset decommitted parts).
+      }
+      // (delay) purge the entire range
+      mi_arena_schedule_purge(arena, bitmap_idx, blocks, stats);
+    }
+
+    // and make it available to others again
+    bool all_inuse = _mi_bitmap_unclaim_across(arena->blocks_inuse, arena->field_count, blocks, bitmap_idx);
+    if (!all_inuse) {
+      _mi_error_message(EAGAIN, "trying to free an already freed arena block: %p, size %zu\n", p, size);
+      return;
+    };
+  }
+  else {
+    // arena was none, external, or static; nothing to do
+    mi_assert_internal(memid.memkind < MI_MEM_OS);
+  }
+
+  // purge expired decommits
+  mi_arenas_try_purge(false, false, stats);
+}
+
+// destroy owned arenas; this is unsafe and should only be done using `mi_option_destroy_on_exit`
+// for dynamic libraries that are unloaded and need to release all their allocated memory.
+static void mi_arenas_unsafe_destroy(void) {
+  const size_t max_arena = mi_atomic_load_relaxed(&mi_arena_count);
+  size_t new_max_arena = 0;
+  for (size_t i = 0; i < max_arena; i++) {
+    mi_arena_t* arena = mi_atomic_load_ptr_acquire(mi_arena_t, &mi_arenas[i]);
+    if (arena != NULL) {
+      if (arena->start != NULL && mi_memkind_is_os(arena->memid.memkind)) {
+        mi_atomic_store_ptr_release(mi_arena_t, &mi_arenas[i], NULL);
+        _mi_os_free(arena->start, mi_arena_size(arena), arena->memid, &_mi_stats_main);
+      }
+      else {
+        new_max_arena = i;
+      }
+      mi_arena_meta_free(arena, arena->meta_memid, arena->meta_size, &_mi_stats_main);
+    }
+  }
+
+  // try to lower the max arena.
+  size_t expected = max_arena;
+  mi_atomic_cas_strong_acq_rel(&mi_arena_count, &expected, new_max_arena);
+}
+
+// Purge the arenas; if `force_purge` is true, amenable parts are purged even if not yet expired
+void _mi_arena_collect(bool force_purge, mi_stats_t* stats) {
+  mi_arenas_try_purge(force_purge, true /* visit all */, stats);
+}
+
+// destroy owned arenas; this is unsafe and should only be done using `mi_option_destroy_on_exit`
+// for dynamic libraries that are unloaded and need to release all their allocated memory.
+void _mi_arena_unsafe_destroy_all(mi_stats_t* stats) {
+  mi_arenas_unsafe_destroy();
+  _mi_arena_collect(true /* force purge */, stats);  // purge non-owned arenas
+}
+
+// Is a pointer inside any of our arenas?
+bool _mi_arena_contains(const void* p) {
+  const size_t max_arena = mi_atomic_load_relaxed(&mi_arena_count);
+  for (size_t i = 0; i < max_arena; i++) {
+    mi_arena_t* arena = mi_atomic_load_ptr_acquire(mi_arena_t, &mi_arenas[i]);
+    if (arena != NULL && arena->start <= (const uint8_t*)p && arena->start + mi_arena_block_size(arena->block_count) > (const uint8_t*)p) {
+      return true;
+    }
+  }
+  return false;
+}
+
+
+/* -----------------------------------------------------------
+  Add an arena.
+----------------------------------------------------------- */
+
+static bool mi_arena_add(mi_arena_t* arena, mi_arena_id_t* arena_id) {
+  mi_assert_internal(arena != NULL);
+  mi_assert_internal((uintptr_t)mi_atomic_load_ptr_relaxed(uint8_t,&arena->start) % MI_SEGMENT_ALIGN == 0);
+  mi_assert_internal(arena->block_count > 0);
+  if (arena_id != NULL) { *arena_id = -1; }
+
+  size_t i = mi_atomic_increment_acq_rel(&mi_arena_count);
+  if (i >= MI_MAX_ARENAS) {
+    mi_atomic_decrement_acq_rel(&mi_arena_count);
+    return false;
+  }
+  arena->id = mi_arena_id_create(i);
+  mi_atomic_store_ptr_release(mi_arena_t,&mi_arenas[i], arena);
+  if (arena_id != NULL) { *arena_id = arena->id; }
+  return true;
+}
+
+static bool mi_manage_os_memory_ex2(void* start, size_t size, bool is_large, int numa_node, bool exclusive, mi_memid_t memid, mi_arena_id_t* arena_id) mi_attr_noexcept
+{
+  if (arena_id != NULL) *arena_id = _mi_arena_id_none();
+  if (size < MI_ARENA_BLOCK_SIZE) return false;
+
+  if (is_large) {
+    mi_assert_internal(memid.initially_committed && memid.is_pinned);
+  }
+
+  const size_t bcount = size / MI_ARENA_BLOCK_SIZE;
+  const size_t fields = _mi_divide_up(bcount, MI_BITMAP_FIELD_BITS);
+  const size_t bitmaps = (memid.is_pinned ? 2 : 4);
+  const size_t asize  = sizeof(mi_arena_t) + (bitmaps*fields*sizeof(mi_bitmap_field_t));
+  mi_memid_t meta_memid;
+  mi_arena_t* arena   = (mi_arena_t*)mi_arena_meta_zalloc(asize, &meta_memid, &_mi_stats_main); // TODO: can we avoid allocating from the OS?
+  if (arena == NULL) return false;
+
+  // already zero'd due to os_alloc
+  // _mi_memzero(arena, asize);
+  arena->id = _mi_arena_id_none();
+  arena->memid = memid;
+  arena->exclusive = exclusive;
+  arena->meta_size = asize;
+  arena->meta_memid = meta_memid;
+  arena->block_count = bcount;
+  arena->field_count = fields;
+  arena->start = (uint8_t*)start;
+  arena->numa_node    = numa_node; // TODO: or get the current numa node if -1? (now it allows anyone to allocate on -1)
+  arena->is_large     = is_large;
+  arena->purge_expire = 0;
+  arena->search_idx   = 0;
+  arena->blocks_dirty = &arena->blocks_inuse[fields]; // just after inuse bitmap
+  arena->blocks_committed = (arena->memid.is_pinned ? NULL : &arena->blocks_inuse[2*fields]); // just after dirty bitmap
+  arena->blocks_purge  = (arena->memid.is_pinned ? NULL : &arena->blocks_inuse[3*fields]); // just after committed bitmap
+  // initialize committed bitmap?
+  if (arena->blocks_committed != NULL && arena->memid.initially_committed) {
+    memset((void*)arena->blocks_committed, 0xFF, fields*sizeof(mi_bitmap_field_t)); // cast to void* to avoid atomic warning
+  }
+
+  // and claim leftover blocks if needed (so we never allocate there)
+  ptrdiff_t post = (fields * MI_BITMAP_FIELD_BITS) - bcount;
+  mi_assert_internal(post >= 0);
+  if (post > 0) {
+    // don't use leftover bits at the end
+    mi_bitmap_index_t postidx = mi_bitmap_index_create(fields - 1, MI_BITMAP_FIELD_BITS - post);
+    _mi_bitmap_claim(arena->blocks_inuse, fields, post, postidx, NULL);
+  }
+  return mi_arena_add(arena, arena_id);
+
+}
+
+bool mi_manage_os_memory_ex(void* start, size_t size, bool is_committed, bool is_large, bool is_zero, int numa_node, bool exclusive, mi_arena_id_t* arena_id) mi_attr_noexcept {
+  mi_memid_t memid = _mi_memid_create(MI_MEM_EXTERNAL);
+  memid.initially_committed = is_committed;
+  memid.initially_zero = is_zero;
+  memid.is_pinned = is_large;
+  return mi_manage_os_memory_ex2(start,size,is_large,numa_node,exclusive,memid, arena_id);
+}
+
+// Reserve a range of regular OS memory
+int mi_reserve_os_memory_ex(size_t size, bool commit, bool allow_large, bool exclusive, mi_arena_id_t* arena_id) mi_attr_noexcept {
+  if (arena_id != NULL) *arena_id = _mi_arena_id_none();
+  size = _mi_align_up(size, MI_ARENA_BLOCK_SIZE); // at least one block
+  mi_memid_t memid;
+  void* start = _mi_os_alloc_aligned(size, MI_SEGMENT_ALIGN, commit, allow_large, &memid, &_mi_stats_main);
+  if (start == NULL) return ENOMEM;
+  const bool is_large = memid.is_pinned; // todo: use separate is_large field?
+  if (!mi_manage_os_memory_ex2(start, size, is_large, -1 /* numa node */, exclusive, memid, arena_id)) {
+    _mi_os_free_ex(start, size, commit, memid, &_mi_stats_main);
+    _mi_verbose_message("failed to reserve %zu k memory\n", _mi_divide_up(size, 1024));
+    return ENOMEM;
+  }
+  _mi_verbose_message("reserved %zu KiB memory%s\n", _mi_divide_up(size, 1024), is_large ? " (in large os pages)" : "");
+  return 0;
+}
+
+
+// Manage a range of regular OS memory
+bool mi_manage_os_memory(void* start, size_t size, bool is_committed, bool is_large, bool is_zero, int numa_node) mi_attr_noexcept {
+  return mi_manage_os_memory_ex(start, size, is_committed, is_large, is_zero, numa_node, false /* exclusive? */, NULL);
+}
+
+// Reserve a range of regular OS memory
+int mi_reserve_os_memory(size_t size, bool commit, bool allow_large) mi_attr_noexcept {
+  return mi_reserve_os_memory_ex(size, commit, allow_large, false, NULL);
+}
+
+
+/* -----------------------------------------------------------
+  Debugging
+----------------------------------------------------------- */
+
+static size_t mi_debug_show_bitmap(const char* prefix, mi_bitmap_field_t* fields, size_t field_count ) {
+  size_t inuse_count = 0;
+  for (size_t i = 0; i < field_count; i++) {
+    char buf[MI_BITMAP_FIELD_BITS + 1];
+    uintptr_t field = mi_atomic_load_relaxed(&fields[i]);
+    for (size_t bit = 0; bit < MI_BITMAP_FIELD_BITS; bit++) {
+      bool inuse = ((((uintptr_t)1 << bit) & field) != 0);
+      if (inuse) inuse_count++;
+      buf[MI_BITMAP_FIELD_BITS - 1 - bit] = (inuse ? 'x' : '.');
+    }
+    buf[MI_BITMAP_FIELD_BITS] = 0;
+    _mi_verbose_message("%s%s\n", prefix, buf);
+  }
+  return inuse_count;
+}
+
+void mi_debug_show_arenas(void) mi_attr_noexcept {
+  size_t max_arenas = mi_atomic_load_relaxed(&mi_arena_count);
+  for (size_t i = 0; i < max_arenas; i++) {
+    mi_arena_t* arena = mi_atomic_load_ptr_relaxed(mi_arena_t, &mi_arenas[i]);
+    if (arena == NULL) break;
+    size_t inuse_count = 0;
+    _mi_verbose_message("arena %zu: %zu blocks with %zu fields\n", i, arena->block_count, arena->field_count);
+    inuse_count += mi_debug_show_bitmap("  ", arena->blocks_inuse, arena->field_count);
+    _mi_verbose_message("  blocks in use ('x'): %zu\n", inuse_count);
+  }
+}
+
+
+/* -----------------------------------------------------------
+  Reserve a huge page arena.
+----------------------------------------------------------- */
+// reserve at a specific numa node
+int mi_reserve_huge_os_pages_at_ex(size_t pages, int numa_node, size_t timeout_msecs, bool exclusive, mi_arena_id_t* arena_id) mi_attr_noexcept {
+  if (arena_id != NULL) *arena_id = -1;
+  if (pages==0) return 0;
+  if (numa_node < -1) numa_node = -1;
+  if (numa_node >= 0) numa_node = numa_node % _mi_os_numa_node_count();
+  size_t hsize = 0;
+  size_t pages_reserved = 0;
+  mi_memid_t memid;
+  void* p = _mi_os_alloc_huge_os_pages(pages, numa_node, timeout_msecs, &pages_reserved, &hsize, &memid);
+  if (p==NULL || pages_reserved==0) {
+    _mi_warning_message("failed to reserve %zu GiB huge pages\n", pages);
+    return ENOMEM;
+  }
+  _mi_verbose_message("numa node %i: reserved %zu GiB huge pages (of the %zu GiB requested)\n", numa_node, pages_reserved, pages);
+
+  if (!mi_manage_os_memory_ex2(p, hsize, true, numa_node, exclusive, memid, arena_id)) {
+    _mi_os_free(p, hsize, memid, &_mi_stats_main);
+    return ENOMEM;
+  }
+  return 0;
+}
+
+int mi_reserve_huge_os_pages_at(size_t pages, int numa_node, size_t timeout_msecs) mi_attr_noexcept {
+  return mi_reserve_huge_os_pages_at_ex(pages, numa_node, timeout_msecs, false, NULL);
+}
+
+// reserve huge pages evenly among the given number of numa nodes (or use the available ones as detected)
+int mi_reserve_huge_os_pages_interleave(size_t pages, size_t numa_nodes, size_t timeout_msecs) mi_attr_noexcept {
+  if (pages == 0) return 0;
+
+  // pages per numa node
+  size_t numa_count = (numa_nodes > 0 ? numa_nodes : _mi_os_numa_node_count());
+  if (numa_count <= 0) numa_count = 1;
+  const size_t pages_per = pages / numa_count;
+  const size_t pages_mod = pages % numa_count;
+  const size_t timeout_per = (timeout_msecs==0 ? 0 : (timeout_msecs / numa_count) + 50);
+
+  // reserve evenly among numa nodes
+  for (size_t numa_node = 0; numa_node < numa_count && pages > 0; numa_node++) {
+    size_t node_pages = pages_per;  // can be 0
+    if (numa_node < pages_mod) node_pages++;
+    int err = mi_reserve_huge_os_pages_at(node_pages, (int)numa_node, timeout_per);
+    if (err) return err;
+    if (pages < node_pages) {
+      pages = 0;
+    }
+    else {
+      pages -= node_pages;
+    }
+  }
+
+  return 0;
+}
+
+int mi_reserve_huge_os_pages(size_t pages, double max_secs, size_t* pages_reserved) mi_attr_noexcept {
+  MI_UNUSED(max_secs);
+  _mi_warning_message("mi_reserve_huge_os_pages is deprecated: use mi_reserve_huge_os_pages_interleave/at instead\n");
+  if (pages_reserved != NULL) *pages_reserved = 0;
+  int err = mi_reserve_huge_os_pages_interleave(pages, 0, (size_t)(max_secs * 1000.0));
+  if (err==0 && pages_reserved!=NULL) *pages_reserved = pages;
+  return err;
+}
diff --git a/Objects/mimalloc/bitmap.c b/Objects/mimalloc/bitmap.c
new file mode 100644
index 00000000000000..ec3c755822dac1
--- /dev/null
+++ b/Objects/mimalloc/bitmap.c
@@ -0,0 +1,432 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2019-2023 Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* ----------------------------------------------------------------------------
+Concurrent bitmap that can set/reset sequences of bits atomically,
+represeted as an array of fields where each field is a machine word (`size_t`)
+
+There are two api's; the standard one cannot have sequences that cross
+between the bitmap fields (and a sequence must be <= MI_BITMAP_FIELD_BITS).
+
+The `_across` postfixed functions do allow sequences that can cross over
+between the fields. (This is used in arena allocation)
+---------------------------------------------------------------------------- */
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "bitmap.h"
+
+/* -----------------------------------------------------------
+  Bitmap definition
+----------------------------------------------------------- */
+
+// The bit mask for a given number of blocks at a specified bit index.
+static inline size_t mi_bitmap_mask_(size_t count, size_t bitidx) {
+  mi_assert_internal(count + bitidx <= MI_BITMAP_FIELD_BITS);
+  mi_assert_internal(count > 0);
+  if (count >= MI_BITMAP_FIELD_BITS) return MI_BITMAP_FIELD_FULL;
+  if (count == 0) return 0;
+  return ((((size_t)1 << count) - 1) << bitidx);
+}
+
+
+/* -----------------------------------------------------------
+  Claim a bit sequence atomically
+----------------------------------------------------------- */
+
+// Try to atomically claim a sequence of `count` bits in a single
+// field at `idx` in `bitmap`. Returns `true` on success.
+inline bool _mi_bitmap_try_find_claim_field(mi_bitmap_t bitmap, size_t idx, const size_t count, mi_bitmap_index_t* bitmap_idx)
+{
+  mi_assert_internal(bitmap_idx != NULL);
+  mi_assert_internal(count <= MI_BITMAP_FIELD_BITS);
+  mi_assert_internal(count > 0);
+  mi_bitmap_field_t* field = &bitmap[idx];
+  size_t map  = mi_atomic_load_relaxed(field);
+  if (map==MI_BITMAP_FIELD_FULL) return false; // short cut
+
+  // search for 0-bit sequence of length count
+  const size_t mask = mi_bitmap_mask_(count, 0);
+  const size_t bitidx_max = MI_BITMAP_FIELD_BITS - count;
+
+#ifdef MI_HAVE_FAST_BITSCAN
+  size_t bitidx = mi_ctz(~map);    // quickly find the first zero bit if possible
+#else
+  size_t bitidx = 0;               // otherwise start at 0
+#endif
+  size_t m = (mask << bitidx);     // invariant: m == mask shifted by bitidx
+
+  // scan linearly for a free range of zero bits
+  while (bitidx <= bitidx_max) {
+    const size_t mapm = (map & m);
+    if (mapm == 0) {  // are the mask bits free at bitidx?
+      mi_assert_internal((m >> bitidx) == mask); // no overflow?
+      const size_t newmap = (map | m);
+      mi_assert_internal((newmap^map) >> bitidx == mask);
+      if (!mi_atomic_cas_strong_acq_rel(field, &map, newmap)) {  // TODO: use weak cas here?
+        // no success, another thread claimed concurrently.. keep going (with updated `map`)
+        continue;
+      }
+      else {
+        // success, we claimed the bits!
+        *bitmap_idx = mi_bitmap_index_create(idx, bitidx);
+        return true;
+      }
+    }
+    else {
+      // on to the next bit range
+#ifdef MI_HAVE_FAST_BITSCAN
+      mi_assert_internal(mapm != 0);
+      const size_t shift = (count == 1 ? 1 : (MI_INTPTR_BITS - mi_clz(mapm) - bitidx));
+      mi_assert_internal(shift > 0 && shift <= count);
+#else
+      const size_t shift = 1;
+#endif
+      bitidx += shift;
+      m <<= shift;
+    }
+  }
+  // no bits found
+  return false;
+}
+
+// Find `count` bits of 0 and set them to 1 atomically; returns `true` on success.
+// Starts at idx, and wraps around to search in all `bitmap_fields` fields.
+// `count` can be at most MI_BITMAP_FIELD_BITS and will never cross fields.
+bool _mi_bitmap_try_find_from_claim(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_index_t* bitmap_idx) {
+  size_t idx = start_field_idx;
+  for (size_t visited = 0; visited < bitmap_fields; visited++, idx++) {
+    if (idx >= bitmap_fields) { idx = 0; } // wrap
+    if (_mi_bitmap_try_find_claim_field(bitmap, idx, count, bitmap_idx)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// Like _mi_bitmap_try_find_from_claim but with an extra predicate that must be fullfilled
+bool _mi_bitmap_try_find_from_claim_pred(mi_bitmap_t bitmap, const size_t bitmap_fields,
+            const size_t start_field_idx, const size_t count,
+            mi_bitmap_pred_fun_t pred_fun, void* pred_arg,
+            mi_bitmap_index_t* bitmap_idx) {
+  size_t idx = start_field_idx;
+  for (size_t visited = 0; visited < bitmap_fields; visited++, idx++) {
+    if (idx >= bitmap_fields) idx = 0; // wrap
+    if (_mi_bitmap_try_find_claim_field(bitmap, idx, count, bitmap_idx)) {
+      if (pred_fun == NULL || pred_fun(*bitmap_idx, pred_arg)) {
+        return true;
+      }
+      // predicate returned false, unclaim and look further
+      _mi_bitmap_unclaim(bitmap, bitmap_fields, count, *bitmap_idx);
+    }
+  }
+  return false;
+}
+
+// Set `count` bits at `bitmap_idx` to 0 atomically
+// Returns `true` if all `count` bits were 1 previously.
+bool _mi_bitmap_unclaim(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  const size_t idx = mi_bitmap_index_field(bitmap_idx);
+  const size_t bitidx = mi_bitmap_index_bit_in_field(bitmap_idx);
+  const size_t mask = mi_bitmap_mask_(count, bitidx);
+  mi_assert_internal(bitmap_fields > idx); MI_UNUSED(bitmap_fields);
+  // mi_assert_internal((bitmap[idx] & mask) == mask);
+  const size_t prev = mi_atomic_and_acq_rel(&bitmap[idx], ~mask);
+  return ((prev & mask) == mask);
+}
+
+
+// Set `count` bits at `bitmap_idx` to 1 atomically
+// Returns `true` if all `count` bits were 0 previously. `any_zero` is `true` if there was at least one zero bit.
+bool _mi_bitmap_claim(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx, bool* any_zero) {
+  const size_t idx = mi_bitmap_index_field(bitmap_idx);
+  const size_t bitidx = mi_bitmap_index_bit_in_field(bitmap_idx);
+  const size_t mask = mi_bitmap_mask_(count, bitidx);
+  mi_assert_internal(bitmap_fields > idx); MI_UNUSED(bitmap_fields);
+  //mi_assert_internal(any_zero != NULL || (bitmap[idx] & mask) == 0);
+  size_t prev = mi_atomic_or_acq_rel(&bitmap[idx], mask);
+  if (any_zero != NULL) { *any_zero = ((prev & mask) != mask); }
+  return ((prev & mask) == 0);
+}
+
+// Returns `true` if all `count` bits were 1. `any_ones` is `true` if there was at least one bit set to one.
+static bool mi_bitmap_is_claimedx(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx, bool* any_ones) {
+  const size_t idx = mi_bitmap_index_field(bitmap_idx);
+  const size_t bitidx = mi_bitmap_index_bit_in_field(bitmap_idx);
+  const size_t mask = mi_bitmap_mask_(count, bitidx);
+  mi_assert_internal(bitmap_fields > idx); MI_UNUSED(bitmap_fields);
+  const size_t field = mi_atomic_load_relaxed(&bitmap[idx]);
+  if (any_ones != NULL) { *any_ones = ((field & mask) != 0); }
+  return ((field & mask) == mask);
+}
+
+// Try to set `count` bits at `bitmap_idx` from 0 to 1 atomically.
+// Returns `true` if successful when all previous `count` bits were 0.
+bool _mi_bitmap_try_claim(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  const size_t idx = mi_bitmap_index_field(bitmap_idx);
+  const size_t bitidx = mi_bitmap_index_bit_in_field(bitmap_idx);
+  const size_t mask = mi_bitmap_mask_(count, bitidx);
+  mi_assert_internal(bitmap_fields > idx); MI_UNUSED(bitmap_fields);
+  size_t expected = mi_atomic_load_relaxed(&bitmap[idx]);
+  do  {
+    if ((expected & mask) != 0) return false;
+  }
+  while (!mi_atomic_cas_strong_acq_rel(&bitmap[idx], &expected, expected | mask));
+  mi_assert_internal((expected & mask) == 0);
+  return true;
+}
+
+
+bool _mi_bitmap_is_claimed(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  return mi_bitmap_is_claimedx(bitmap, bitmap_fields, count, bitmap_idx, NULL);
+}
+
+bool _mi_bitmap_is_any_claimed(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  bool any_ones;
+  mi_bitmap_is_claimedx(bitmap, bitmap_fields, count, bitmap_idx, &any_ones);
+  return any_ones;
+}
+
+
+//--------------------------------------------------------------------------
+// the `_across` functions work on bitmaps where sequences can cross over
+// between the fields. This is used in arena allocation
+//--------------------------------------------------------------------------
+
+// Try to atomically claim a sequence of `count` bits starting from the field
+// at `idx` in `bitmap` and crossing into subsequent fields. Returns `true` on success.
+// Only needs to consider crossing into the next fields (see `mi_bitmap_try_find_from_claim_across`)
+static bool mi_bitmap_try_find_claim_field_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t idx, const size_t count, const size_t retries, mi_bitmap_index_t* bitmap_idx)
+{
+  mi_assert_internal(bitmap_idx != NULL);
+
+  // check initial trailing zeros
+  mi_bitmap_field_t* field = &bitmap[idx];
+  size_t map = mi_atomic_load_relaxed(field);
+  const size_t initial = mi_clz(map);  // count of initial zeros starting at idx
+  mi_assert_internal(initial <= MI_BITMAP_FIELD_BITS);
+  if (initial == 0)     return false;
+  if (initial >= count) return _mi_bitmap_try_find_claim_field(bitmap, idx, count, bitmap_idx);    // no need to cross fields (this case won't happen for us)
+  if (_mi_divide_up(count - initial, MI_BITMAP_FIELD_BITS) >= (bitmap_fields - idx)) return false; // not enough entries
+
+  // scan ahead
+  size_t found = initial;
+  size_t mask = 0;     // mask bits for the final field
+  while(found < count) {
+    field++;
+    map = mi_atomic_load_relaxed(field);
+    const size_t mask_bits = (found + MI_BITMAP_FIELD_BITS <= count ? MI_BITMAP_FIELD_BITS : (count - found));
+    mi_assert_internal(mask_bits > 0 && mask_bits <= MI_BITMAP_FIELD_BITS);
+    mask = mi_bitmap_mask_(mask_bits, 0);
+    if ((map & mask) != 0) return false;  // some part is already claimed
+    found += mask_bits;
+  }
+  mi_assert_internal(field < &bitmap[bitmap_fields]);
+
+  // we found a range of contiguous zeros up to the final field; mask contains mask in the final field
+  // now try to claim the range atomically
+  mi_bitmap_field_t* const final_field = field;
+  const size_t final_mask = mask;
+  mi_bitmap_field_t* const initial_field = &bitmap[idx];
+  const size_t initial_idx = MI_BITMAP_FIELD_BITS - initial;
+  const size_t initial_mask = mi_bitmap_mask_(initial, initial_idx);
+
+  // initial field
+  size_t newmap;
+  field = initial_field;
+  map = mi_atomic_load_relaxed(field);
+  do {
+    newmap = (map | initial_mask);
+    if ((map & initial_mask) != 0) { goto rollback; };
+  } while (!mi_atomic_cas_strong_acq_rel(field, &map, newmap));
+
+  // intermediate fields
+  while (++field < final_field) {
+    newmap = MI_BITMAP_FIELD_FULL;
+    map = 0;
+    if (!mi_atomic_cas_strong_acq_rel(field, &map, newmap)) { goto rollback; }
+  }
+
+  // final field
+  mi_assert_internal(field == final_field);
+  map = mi_atomic_load_relaxed(field);
+  do {
+    newmap = (map | final_mask);
+    if ((map & final_mask) != 0) { goto rollback; }
+  } while (!mi_atomic_cas_strong_acq_rel(field, &map, newmap));
+
+  // claimed!
+  *bitmap_idx = mi_bitmap_index_create(idx, initial_idx);
+  return true;
+
+rollback:
+  // roll back intermediate fields
+  // (we just failed to claim `field` so decrement first)
+  while (--field > initial_field) {
+    newmap = 0;
+    map = MI_BITMAP_FIELD_FULL;
+    mi_assert_internal(mi_atomic_load_relaxed(field) == map);
+    mi_atomic_store_release(field, newmap);
+  }
+  if (field == initial_field) {               // (if we failed on the initial field, `field + 1 == initial_field`)
+    map = mi_atomic_load_relaxed(field);
+    do {
+      mi_assert_internal((map & initial_mask) == initial_mask);
+      newmap = (map & ~initial_mask);
+    } while (!mi_atomic_cas_strong_acq_rel(field, &map, newmap));
+  }
+  // retry? (we make a recursive call instead of goto to be able to use const declarations)
+  if (retries <= 2) {
+    return mi_bitmap_try_find_claim_field_across(bitmap, bitmap_fields, idx, count, retries+1, bitmap_idx);
+  }
+  else {
+    return false;
+  }
+}
+
+
+// Find `count` bits of zeros and set them to 1 atomically; returns `true` on success.
+// Starts at idx, and wraps around to search in all `bitmap_fields` fields.
+bool _mi_bitmap_try_find_from_claim_across(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_index_t* bitmap_idx) {
+  mi_assert_internal(count > 0);
+  if (count <= 2) {
+    // we don't bother with crossover fields for small counts
+    return _mi_bitmap_try_find_from_claim(bitmap, bitmap_fields, start_field_idx, count, bitmap_idx);
+  }
+
+  // visit the fields
+  size_t idx = start_field_idx;
+  for (size_t visited = 0; visited < bitmap_fields; visited++, idx++) {
+    if (idx >= bitmap_fields) { idx = 0; } // wrap
+    // first try to claim inside a field
+    if (count <= MI_BITMAP_FIELD_BITS) {
+      if (_mi_bitmap_try_find_claim_field(bitmap, idx, count, bitmap_idx)) {
+        return true;
+      }
+    }
+    // if that fails, then try to claim across fields
+    if (mi_bitmap_try_find_claim_field_across(bitmap, bitmap_fields, idx, count, 0, bitmap_idx)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// Helper for masks across fields; returns the mid count, post_mask may be 0
+static size_t mi_bitmap_mask_across(mi_bitmap_index_t bitmap_idx, size_t bitmap_fields, size_t count, size_t* pre_mask, size_t* mid_mask, size_t* post_mask) {
+  MI_UNUSED(bitmap_fields);
+  const size_t bitidx = mi_bitmap_index_bit_in_field(bitmap_idx);
+  if mi_likely(bitidx + count <= MI_BITMAP_FIELD_BITS) {
+    *pre_mask = mi_bitmap_mask_(count, bitidx);
+    *mid_mask = 0;
+    *post_mask = 0;
+    mi_assert_internal(mi_bitmap_index_field(bitmap_idx) < bitmap_fields);
+    return 0;
+  }
+  else {
+    const size_t pre_bits = MI_BITMAP_FIELD_BITS - bitidx;
+    mi_assert_internal(pre_bits < count);
+    *pre_mask = mi_bitmap_mask_(pre_bits, bitidx);
+    count -= pre_bits;
+    const size_t mid_count = (count / MI_BITMAP_FIELD_BITS);
+    *mid_mask = MI_BITMAP_FIELD_FULL;
+    count %= MI_BITMAP_FIELD_BITS;
+    *post_mask = (count==0 ? 0 : mi_bitmap_mask_(count, 0));
+    mi_assert_internal(mi_bitmap_index_field(bitmap_idx) + mid_count + (count==0 ? 0 : 1) < bitmap_fields);
+    return mid_count;
+  }
+}
+
+// Set `count` bits at `bitmap_idx` to 0 atomically
+// Returns `true` if all `count` bits were 1 previously.
+bool _mi_bitmap_unclaim_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  size_t idx = mi_bitmap_index_field(bitmap_idx);
+  size_t pre_mask;
+  size_t mid_mask;
+  size_t post_mask;
+  size_t mid_count = mi_bitmap_mask_across(bitmap_idx, bitmap_fields, count, &pre_mask, &mid_mask, &post_mask);
+  bool all_one = true;
+  mi_bitmap_field_t* field = &bitmap[idx];
+  size_t prev = mi_atomic_and_acq_rel(field++, ~pre_mask);   // clear first part
+  if ((prev & pre_mask) != pre_mask) all_one = false;
+  while(mid_count-- > 0) {
+    prev = mi_atomic_and_acq_rel(field++, ~mid_mask);        // clear mid part
+    if ((prev & mid_mask) != mid_mask) all_one = false;
+  }
+  if (post_mask!=0) {
+    prev = mi_atomic_and_acq_rel(field, ~post_mask);         // clear end part
+    if ((prev & post_mask) != post_mask) all_one = false;
+  }
+  return all_one;
+}
+
+// Set `count` bits at `bitmap_idx` to 1 atomically
+// Returns `true` if all `count` bits were 0 previously. `any_zero` is `true` if there was at least one zero bit.
+bool _mi_bitmap_claim_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx, bool* pany_zero) {
+  size_t idx = mi_bitmap_index_field(bitmap_idx);
+  size_t pre_mask;
+  size_t mid_mask;
+  size_t post_mask;
+  size_t mid_count = mi_bitmap_mask_across(bitmap_idx, bitmap_fields, count, &pre_mask, &mid_mask, &post_mask);
+  bool all_zero = true;
+  bool any_zero = false;
+  _Atomic(size_t)*field = &bitmap[idx];
+  size_t prev = mi_atomic_or_acq_rel(field++, pre_mask);
+  if ((prev & pre_mask) != 0) all_zero = false;
+  if ((prev & pre_mask) != pre_mask) any_zero = true;
+  while (mid_count-- > 0) {
+    prev = mi_atomic_or_acq_rel(field++, mid_mask);
+    if ((prev & mid_mask) != 0) all_zero = false;
+    if ((prev & mid_mask) != mid_mask) any_zero = true;
+  }
+  if (post_mask!=0) {
+    prev = mi_atomic_or_acq_rel(field, post_mask);
+    if ((prev & post_mask) != 0) all_zero = false;
+    if ((prev & post_mask) != post_mask) any_zero = true;
+  }
+  if (pany_zero != NULL) { *pany_zero = any_zero; }
+  return all_zero;
+}
+
+
+// Returns `true` if all `count` bits were 1.
+// `any_ones` is `true` if there was at least one bit set to one.
+static bool mi_bitmap_is_claimedx_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx, bool* pany_ones) {
+  size_t idx = mi_bitmap_index_field(bitmap_idx);
+  size_t pre_mask;
+  size_t mid_mask;
+  size_t post_mask;
+  size_t mid_count = mi_bitmap_mask_across(bitmap_idx, bitmap_fields, count, &pre_mask, &mid_mask, &post_mask);
+  bool all_ones = true;
+  bool any_ones = false;
+  mi_bitmap_field_t* field = &bitmap[idx];
+  size_t prev = mi_atomic_load_relaxed(field++);
+  if ((prev & pre_mask) != pre_mask) all_ones = false;
+  if ((prev & pre_mask) != 0) any_ones = true;
+  while (mid_count-- > 0) {
+    prev = mi_atomic_load_relaxed(field++);
+    if ((prev & mid_mask) != mid_mask) all_ones = false;
+    if ((prev & mid_mask) != 0) any_ones = true;
+  }
+  if (post_mask!=0) {
+    prev = mi_atomic_load_relaxed(field);
+    if ((prev & post_mask) != post_mask) all_ones = false;
+    if ((prev & post_mask) != 0) any_ones = true;
+  }
+  if (pany_ones != NULL) { *pany_ones = any_ones; }
+  return all_ones;
+}
+
+bool _mi_bitmap_is_claimed_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  return mi_bitmap_is_claimedx_across(bitmap, bitmap_fields, count, bitmap_idx, NULL);
+}
+
+bool _mi_bitmap_is_any_claimed_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx) {
+  bool any_ones;
+  mi_bitmap_is_claimedx_across(bitmap, bitmap_fields, count, bitmap_idx, &any_ones);
+  return any_ones;
+}
diff --git a/Objects/mimalloc/bitmap.h b/Objects/mimalloc/bitmap.h
new file mode 100644
index 00000000000000..9ba15d5d6f09ea
--- /dev/null
+++ b/Objects/mimalloc/bitmap.h
@@ -0,0 +1,115 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2019-2023 Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* ----------------------------------------------------------------------------
+Concurrent bitmap that can set/reset sequences of bits atomically,
+represeted as an array of fields where each field is a machine word (`size_t`)
+
+There are two api's; the standard one cannot have sequences that cross
+between the bitmap fields (and a sequence must be <= MI_BITMAP_FIELD_BITS).
+(this is used in region allocation)
+
+The `_across` postfixed functions do allow sequences that can cross over
+between the fields. (This is used in arena allocation)
+---------------------------------------------------------------------------- */
+#pragma once
+#ifndef MI_BITMAP_H
+#define MI_BITMAP_H
+
+/* -----------------------------------------------------------
+  Bitmap definition
+----------------------------------------------------------- */
+
+#define MI_BITMAP_FIELD_BITS   (8*MI_SIZE_SIZE)
+#define MI_BITMAP_FIELD_FULL   (~((size_t)0))   // all bits set
+
+// An atomic bitmap of `size_t` fields
+typedef _Atomic(size_t)  mi_bitmap_field_t;
+typedef mi_bitmap_field_t*  mi_bitmap_t;
+
+// A bitmap index is the index of the bit in a bitmap.
+typedef size_t mi_bitmap_index_t;
+
+// Create a bit index.
+static inline mi_bitmap_index_t mi_bitmap_index_create(size_t idx, size_t bitidx) {
+  mi_assert_internal(bitidx < MI_BITMAP_FIELD_BITS);
+  return (idx*MI_BITMAP_FIELD_BITS) + bitidx;
+}
+
+// Create a bit index.
+static inline mi_bitmap_index_t mi_bitmap_index_create_from_bit(size_t full_bitidx) {
+  return mi_bitmap_index_create(full_bitidx / MI_BITMAP_FIELD_BITS, full_bitidx % MI_BITMAP_FIELD_BITS);
+}
+
+// Get the field index from a bit index.
+static inline size_t mi_bitmap_index_field(mi_bitmap_index_t bitmap_idx) {
+  return (bitmap_idx / MI_BITMAP_FIELD_BITS);
+}
+
+// Get the bit index in a bitmap field
+static inline size_t mi_bitmap_index_bit_in_field(mi_bitmap_index_t bitmap_idx) {
+  return (bitmap_idx % MI_BITMAP_FIELD_BITS);
+}
+
+// Get the full bit index
+static inline size_t mi_bitmap_index_bit(mi_bitmap_index_t bitmap_idx) {
+  return bitmap_idx;
+}
+
+/* -----------------------------------------------------------
+  Claim a bit sequence atomically
+----------------------------------------------------------- */
+
+// Try to atomically claim a sequence of `count` bits in a single
+// field at `idx` in `bitmap`. Returns `true` on success.
+bool _mi_bitmap_try_find_claim_field(mi_bitmap_t bitmap, size_t idx, const size_t count, mi_bitmap_index_t* bitmap_idx);
+
+// Starts at idx, and wraps around to search in all `bitmap_fields` fields.
+// For now, `count` can be at most MI_BITMAP_FIELD_BITS and will never cross fields.
+bool _mi_bitmap_try_find_from_claim(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_index_t* bitmap_idx);
+
+// Like _mi_bitmap_try_find_from_claim but with an extra predicate that must be fullfilled
+typedef bool (mi_cdecl *mi_bitmap_pred_fun_t)(mi_bitmap_index_t bitmap_idx, void* pred_arg);
+bool _mi_bitmap_try_find_from_claim_pred(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_pred_fun_t pred_fun, void* pred_arg, mi_bitmap_index_t* bitmap_idx);
+
+// Set `count` bits at `bitmap_idx` to 0 atomically
+// Returns `true` if all `count` bits were 1 previously.
+bool _mi_bitmap_unclaim(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+
+// Try to set `count` bits at `bitmap_idx` from 0 to 1 atomically.
+// Returns `true` if successful when all previous `count` bits were 0.
+bool _mi_bitmap_try_claim(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+
+// Set `count` bits at `bitmap_idx` to 1 atomically
+// Returns `true` if all `count` bits were 0 previously. `any_zero` is `true` if there was at least one zero bit.
+bool _mi_bitmap_claim(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx, bool* any_zero);
+
+bool _mi_bitmap_is_claimed(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+bool _mi_bitmap_is_any_claimed(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+
+
+//--------------------------------------------------------------------------
+// the `_across` functions work on bitmaps where sequences can cross over
+// between the fields. This is used in arena allocation
+//--------------------------------------------------------------------------
+
+// Find `count` bits of zeros and set them to 1 atomically; returns `true` on success.
+// Starts at idx, and wraps around to search in all `bitmap_fields` fields.
+bool _mi_bitmap_try_find_from_claim_across(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_index_t* bitmap_idx);
+
+// Set `count` bits at `bitmap_idx` to 0 atomically
+// Returns `true` if all `count` bits were 1 previously.
+bool _mi_bitmap_unclaim_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+
+// Set `count` bits at `bitmap_idx` to 1 atomically
+// Returns `true` if all `count` bits were 0 previously. `any_zero` is `true` if there was at least one zero bit.
+bool _mi_bitmap_claim_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx, bool* pany_zero);
+
+bool _mi_bitmap_is_claimed_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+bool _mi_bitmap_is_any_claimed_across(mi_bitmap_t bitmap, size_t bitmap_fields, size_t count, mi_bitmap_index_t bitmap_idx);
+
+#endif
diff --git a/Objects/mimalloc/heap.c b/Objects/mimalloc/heap.c
new file mode 100644
index 00000000000000..4eb622ed4bad76
--- /dev/null
+++ b/Objects/mimalloc/heap.c
@@ -0,0 +1,626 @@
+/*----------------------------------------------------------------------------
+Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"  // mi_prim_get_default_heap
+
+#include <string.h>  // memset, memcpy
+
+#if defined(_MSC_VER) && (_MSC_VER < 1920)
+#pragma warning(disable:4204)  // non-constant aggregate initializer
+#endif
+
+/* -----------------------------------------------------------
+  Helpers
+----------------------------------------------------------- */
+
+// return `true` if ok, `false` to break
+typedef bool (heap_page_visitor_fun)(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* arg1, void* arg2);
+
+// Visit all pages in a heap; returns `false` if break was called.
+static bool mi_heap_visit_pages(mi_heap_t* heap, heap_page_visitor_fun* fn, void* arg1, void* arg2)
+{
+  if (heap==NULL || heap->page_count==0) return 0;
+
+  // visit all pages
+  #if MI_DEBUG>1
+  size_t total = heap->page_count;
+  size_t count = 0;
+  #endif
+
+  for (size_t i = 0; i <= MI_BIN_FULL; i++) {
+    mi_page_queue_t* pq = &heap->pages[i];
+    mi_page_t* page = pq->first;
+    while(page != NULL) {
+      mi_page_t* next = page->next; // save next in case the page gets removed from the queue
+      mi_assert_internal(mi_page_heap(page) == heap);
+      #if MI_DEBUG>1
+      count++;
+      #endif
+      if (!fn(heap, pq, page, arg1, arg2)) return false;
+      page = next; // and continue
+    }
+  }
+  mi_assert_internal(count == total);
+  return true;
+}
+
+
+#if MI_DEBUG>=2
+static bool mi_heap_page_is_valid(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* arg1, void* arg2) {
+  MI_UNUSED(arg1);
+  MI_UNUSED(arg2);
+  MI_UNUSED(pq);
+  mi_assert_internal(mi_page_heap(page) == heap);
+  mi_segment_t* segment = _mi_page_segment(page);
+  mi_assert_internal(segment->thread_id == heap->thread_id);
+  mi_assert_expensive(_mi_page_is_valid(page));
+  return true;
+}
+#endif
+#if MI_DEBUG>=3
+static bool mi_heap_is_valid(mi_heap_t* heap) {
+  mi_assert_internal(heap!=NULL);
+  mi_heap_visit_pages(heap, &mi_heap_page_is_valid, NULL, NULL);
+  return true;
+}
+#endif
+
+
+
+
+/* -----------------------------------------------------------
+  "Collect" pages by migrating `local_free` and `thread_free`
+  lists and freeing empty pages. This is done when a thread
+  stops (and in that case abandons pages if there are still
+  blocks alive)
+----------------------------------------------------------- */
+
+typedef enum mi_collect_e {
+  MI_NORMAL,
+  MI_FORCE,
+  MI_ABANDON
+} mi_collect_t;
+
+
+static bool mi_heap_page_collect(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* arg_collect, void* arg2 ) {
+  MI_UNUSED(arg2);
+  MI_UNUSED(heap);
+  mi_assert_internal(mi_heap_page_is_valid(heap, pq, page, NULL, NULL));
+  mi_collect_t collect = *((mi_collect_t*)arg_collect);
+  _mi_page_free_collect(page, collect >= MI_FORCE);
+  if (mi_page_all_free(page)) {
+    // no more used blocks, free the page.
+    // note: this will free retired pages as well.
+    _mi_page_free(page, pq, collect >= MI_FORCE);
+  }
+  else if (collect == MI_ABANDON) {
+    // still used blocks but the thread is done; abandon the page
+    _mi_page_abandon(page, pq);
+  }
+  return true; // don't break
+}
+
+static bool mi_heap_page_never_delayed_free(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* arg1, void* arg2) {
+  MI_UNUSED(arg1);
+  MI_UNUSED(arg2);
+  MI_UNUSED(heap);
+  MI_UNUSED(pq);
+  _mi_page_use_delayed_free(page, MI_NEVER_DELAYED_FREE, false);
+  return true; // don't break
+}
+
+static void mi_heap_collect_ex(mi_heap_t* heap, mi_collect_t collect)
+{
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return;
+
+  const bool force = collect >= MI_FORCE;
+  _mi_deferred_free(heap, force);
+
+  // note: never reclaim on collect but leave it to threads that need storage to reclaim
+  const bool force_main =
+    #ifdef NDEBUG
+      collect == MI_FORCE
+    #else
+      collect >= MI_FORCE
+    #endif
+      && _mi_is_main_thread() && mi_heap_is_backing(heap) && !heap->no_reclaim;
+
+  if (force_main) {
+    // the main thread is abandoned (end-of-program), try to reclaim all abandoned segments.
+    // if all memory is freed by now, all segments should be freed.
+    _mi_abandoned_reclaim_all(heap, &heap->tld->segments);
+  }
+
+  // if abandoning, mark all pages to no longer add to delayed_free
+  if (collect == MI_ABANDON) {
+    mi_heap_visit_pages(heap, &mi_heap_page_never_delayed_free, NULL, NULL);
+  }
+
+  // free all current thread delayed blocks.
+  // (if abandoning, after this there are no more thread-delayed references into the pages.)
+  _mi_heap_delayed_free_all(heap);
+
+  // collect retired pages
+  _mi_heap_collect_retired(heap, force);
+
+  // collect all pages owned by this thread
+  mi_heap_visit_pages(heap, &mi_heap_page_collect, &collect, NULL);
+  mi_assert_internal( collect != MI_ABANDON || mi_atomic_load_ptr_acquire(mi_block_t,&heap->thread_delayed_free) == NULL );
+
+  // collect abandoned segments (in particular, purge expired parts of segments in the abandoned segment list)
+  // note: forced purge can be quite expensive if many threads are created/destroyed so we do not force on abandonment
+  _mi_abandoned_collect(heap, collect == MI_FORCE /* force? */, &heap->tld->segments);
+
+  // collect segment local caches
+  if (force) {
+    _mi_segment_thread_collect(&heap->tld->segments);
+  }
+
+  // collect regions on program-exit (or shared library unload)
+  if (force && _mi_is_main_thread() && mi_heap_is_backing(heap)) {
+    _mi_thread_data_collect();  // collect thread data cache
+    _mi_arena_collect(true /* force purge */, &heap->tld->stats);
+  }
+}
+
+void _mi_heap_collect_abandon(mi_heap_t* heap) {
+  mi_heap_collect_ex(heap, MI_ABANDON);
+}
+
+void mi_heap_collect(mi_heap_t* heap, bool force) mi_attr_noexcept {
+  mi_heap_collect_ex(heap, (force ? MI_FORCE : MI_NORMAL));
+}
+
+void mi_collect(bool force) mi_attr_noexcept {
+  mi_heap_collect(mi_prim_get_default_heap(), force);
+}
+
+
+/* -----------------------------------------------------------
+  Heap new
+----------------------------------------------------------- */
+
+mi_heap_t* mi_heap_get_default(void) {
+  mi_thread_init();
+  return mi_prim_get_default_heap();
+}
+
+static bool mi_heap_is_default(const mi_heap_t* heap) {
+  return (heap == mi_prim_get_default_heap());
+}
+
+
+mi_heap_t* mi_heap_get_backing(void) {
+  mi_heap_t* heap = mi_heap_get_default();
+  mi_assert_internal(heap!=NULL);
+  mi_heap_t* bheap = heap->tld->heap_backing;
+  mi_assert_internal(bheap!=NULL);
+  mi_assert_internal(bheap->thread_id == _mi_thread_id());
+  return bheap;
+}
+
+mi_decl_nodiscard mi_heap_t* mi_heap_new_in_arena(mi_arena_id_t arena_id) {
+  mi_heap_t* bheap = mi_heap_get_backing();
+  mi_heap_t* heap = mi_heap_malloc_tp(bheap, mi_heap_t);  // todo: OS allocate in secure mode?
+  if (heap == NULL) return NULL;
+  _mi_memcpy_aligned(heap, &_mi_heap_empty, sizeof(mi_heap_t));
+  heap->tld = bheap->tld;
+  heap->thread_id = _mi_thread_id();
+  heap->arena_id = arena_id;
+  _mi_random_split(&bheap->random, &heap->random);
+  heap->cookie = _mi_heap_random_next(heap) | 1;
+  heap->keys[0] = _mi_heap_random_next(heap);
+  heap->keys[1] = _mi_heap_random_next(heap);
+  heap->no_reclaim = true;  // don't reclaim abandoned pages or otherwise destroy is unsafe
+  // push on the thread local heaps list
+  heap->next = heap->tld->heaps;
+  heap->tld->heaps = heap;
+  return heap;
+}
+
+mi_decl_nodiscard mi_heap_t* mi_heap_new(void) {
+  return mi_heap_new_in_arena(_mi_arena_id_none());
+}
+
+bool _mi_heap_memid_is_suitable(mi_heap_t* heap, mi_memid_t memid) {
+  return _mi_arena_memid_is_suitable(memid, heap->arena_id);
+}
+
+uintptr_t _mi_heap_random_next(mi_heap_t* heap) {
+  return _mi_random_next(&heap->random);
+}
+
+// zero out the page queues
+static void mi_heap_reset_pages(mi_heap_t* heap) {
+  mi_assert_internal(heap != NULL);
+  mi_assert_internal(mi_heap_is_initialized(heap));
+  // TODO: copy full empty heap instead?
+  memset(&heap->pages_free_direct, 0, sizeof(heap->pages_free_direct));
+  _mi_memcpy_aligned(&heap->pages, &_mi_heap_empty.pages, sizeof(heap->pages));
+  heap->thread_delayed_free = NULL;
+  heap->page_count = 0;
+}
+
+// called from `mi_heap_destroy` and `mi_heap_delete` to free the internal heap resources.
+static void mi_heap_free(mi_heap_t* heap) {
+  mi_assert(heap != NULL);
+  mi_assert_internal(mi_heap_is_initialized(heap));
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return;
+  if (mi_heap_is_backing(heap)) return; // dont free the backing heap
+
+  // reset default
+  if (mi_heap_is_default(heap)) {
+    _mi_heap_set_default_direct(heap->tld->heap_backing);
+  }
+
+  // remove ourselves from the thread local heaps list
+  // linear search but we expect the number of heaps to be relatively small
+  mi_heap_t* prev = NULL;
+  mi_heap_t* curr = heap->tld->heaps;
+  while (curr != heap && curr != NULL) {
+    prev = curr;
+    curr = curr->next;
+  }
+  mi_assert_internal(curr == heap);
+  if (curr == heap) {
+    if (prev != NULL) { prev->next = heap->next; }
+                 else { heap->tld->heaps = heap->next; }
+  }
+  mi_assert_internal(heap->tld->heaps != NULL);
+
+  // and free the used memory
+  mi_free(heap);
+}
+
+
+/* -----------------------------------------------------------
+  Heap destroy
+----------------------------------------------------------- */
+
+static bool _mi_heap_page_destroy(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* arg1, void* arg2) {
+  MI_UNUSED(arg1);
+  MI_UNUSED(arg2);
+  MI_UNUSED(heap);
+  MI_UNUSED(pq);
+
+  // ensure no more thread_delayed_free will be added
+  _mi_page_use_delayed_free(page, MI_NEVER_DELAYED_FREE, false);
+
+  // stats
+  const size_t bsize = mi_page_block_size(page);
+  if (bsize > MI_MEDIUM_OBJ_SIZE_MAX) {
+    if (bsize <= MI_LARGE_OBJ_SIZE_MAX) {
+      mi_heap_stat_decrease(heap, large, bsize);
+    }
+    else {
+      mi_heap_stat_decrease(heap, huge, bsize);
+    }
+  }
+#if (MI_STAT)
+  _mi_page_free_collect(page, false);  // update used count
+  const size_t inuse = page->used;
+  if (bsize <= MI_LARGE_OBJ_SIZE_MAX) {
+    mi_heap_stat_decrease(heap, normal, bsize * inuse);
+#if (MI_STAT>1)
+    mi_heap_stat_decrease(heap, normal_bins[_mi_bin(bsize)], inuse);
+#endif
+  }
+  mi_heap_stat_decrease(heap, malloc, bsize * inuse);  // todo: off for aligned blocks...
+#endif
+
+  /// pretend it is all free now
+  mi_assert_internal(mi_page_thread_free(page) == NULL);
+  page->used = 0;
+
+  // and free the page
+  // mi_page_free(page,false);
+  page->next = NULL;
+  page->prev = NULL;
+  _mi_segment_page_free(page,false /* no force? */, &heap->tld->segments);
+
+  return true; // keep going
+}
+
+void _mi_heap_destroy_pages(mi_heap_t* heap) {
+  mi_heap_visit_pages(heap, &_mi_heap_page_destroy, NULL, NULL);
+  mi_heap_reset_pages(heap);
+}
+
+#if MI_TRACK_HEAP_DESTROY
+static bool mi_cdecl mi_heap_track_block_free(const mi_heap_t* heap, const mi_heap_area_t* area, void* block, size_t block_size, void* arg) {
+  MI_UNUSED(heap); MI_UNUSED(area);  MI_UNUSED(arg); MI_UNUSED(block_size);
+  mi_track_free_size(block,mi_usable_size(block));
+  return true;
+}
+#endif
+
+void mi_heap_destroy(mi_heap_t* heap) {
+  mi_assert(heap != NULL);
+  mi_assert(mi_heap_is_initialized(heap));
+  mi_assert(heap->no_reclaim);
+  mi_assert_expensive(mi_heap_is_valid(heap));
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return;
+  if (!heap->no_reclaim) {
+    // don't free in case it may contain reclaimed pages
+    mi_heap_delete(heap);
+  }
+  else {
+    // track all blocks as freed
+    #if MI_TRACK_HEAP_DESTROY
+    mi_heap_visit_blocks(heap, true, mi_heap_track_block_free, NULL);
+    #endif
+    // free all pages
+    _mi_heap_destroy_pages(heap);
+    mi_heap_free(heap);
+  }
+}
+
+// forcefully destroy all heaps in the current thread
+void _mi_heap_unsafe_destroy_all(void) {
+  mi_heap_t* bheap = mi_heap_get_backing();
+  mi_heap_t* curr = bheap->tld->heaps;
+  while (curr != NULL) {
+    mi_heap_t* next = curr->next;
+    if (curr->no_reclaim) {
+      mi_heap_destroy(curr);
+    }
+    else {
+      _mi_heap_destroy_pages(curr);
+    }
+    curr = next;
+  }
+}
+
+/* -----------------------------------------------------------
+  Safe Heap delete
+----------------------------------------------------------- */
+
+// Transfer the pages from one heap to the other
+static void mi_heap_absorb(mi_heap_t* heap, mi_heap_t* from) {
+  mi_assert_internal(heap!=NULL);
+  if (from==NULL || from->page_count == 0) return;
+
+  // reduce the size of the delayed frees
+  _mi_heap_delayed_free_partial(from);
+
+  // transfer all pages by appending the queues; this will set a new heap field
+  // so threads may do delayed frees in either heap for a while.
+  // note: appending waits for each page to not be in the `MI_DELAYED_FREEING` state
+  // so after this only the new heap will get delayed frees
+  for (size_t i = 0; i <= MI_BIN_FULL; i++) {
+    mi_page_queue_t* pq = &heap->pages[i];
+    mi_page_queue_t* append = &from->pages[i];
+    size_t pcount = _mi_page_queue_append(heap, pq, append);
+    heap->page_count += pcount;
+    from->page_count -= pcount;
+  }
+  mi_assert_internal(from->page_count == 0);
+
+  // and do outstanding delayed frees in the `from` heap
+  // note: be careful here as the `heap` field in all those pages no longer point to `from`,
+  // turns out to be ok as `_mi_heap_delayed_free` only visits the list and calls a
+  // the regular `_mi_free_delayed_block` which is safe.
+  _mi_heap_delayed_free_all(from);
+  #if !defined(_MSC_VER) || (_MSC_VER > 1900) // somehow the following line gives an error in VS2015, issue #353
+  mi_assert_internal(mi_atomic_load_ptr_relaxed(mi_block_t,&from->thread_delayed_free) == NULL);
+  #endif
+
+  // and reset the `from` heap
+  mi_heap_reset_pages(from);
+}
+
+// Safe delete a heap without freeing any still allocated blocks in that heap.
+void mi_heap_delete(mi_heap_t* heap)
+{
+  mi_assert(heap != NULL);
+  mi_assert(mi_heap_is_initialized(heap));
+  mi_assert_expensive(mi_heap_is_valid(heap));
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return;
+
+  if (!mi_heap_is_backing(heap)) {
+    // tranfer still used pages to the backing heap
+    mi_heap_absorb(heap->tld->heap_backing, heap);
+  }
+  else {
+    // the backing heap abandons its pages
+    _mi_heap_collect_abandon(heap);
+  }
+  mi_assert_internal(heap->page_count==0);
+  mi_heap_free(heap);
+}
+
+mi_heap_t* mi_heap_set_default(mi_heap_t* heap) {
+  mi_assert(heap != NULL);
+  mi_assert(mi_heap_is_initialized(heap));
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return NULL;
+  mi_assert_expensive(mi_heap_is_valid(heap));
+  mi_heap_t* old = mi_prim_get_default_heap();
+  _mi_heap_set_default_direct(heap);
+  return old;
+}
+
+
+
+
+/* -----------------------------------------------------------
+  Analysis
+----------------------------------------------------------- */
+
+// static since it is not thread safe to access heaps from other threads.
+static mi_heap_t* mi_heap_of_block(const void* p) {
+  if (p == NULL) return NULL;
+  mi_segment_t* segment = _mi_ptr_segment(p);
+  bool valid = (_mi_ptr_cookie(segment) == segment->cookie);
+  mi_assert_internal(valid);
+  if mi_unlikely(!valid) return NULL;
+  return mi_page_heap(_mi_segment_page_of(segment,p));
+}
+
+bool mi_heap_contains_block(mi_heap_t* heap, const void* p) {
+  mi_assert(heap != NULL);
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return false;
+  return (heap == mi_heap_of_block(p));
+}
+
+
+static bool mi_heap_page_check_owned(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* p, void* vfound) {
+  MI_UNUSED(heap);
+  MI_UNUSED(pq);
+  bool* found = (bool*)vfound;
+  mi_segment_t* segment = _mi_page_segment(page);
+  void* start = _mi_page_start(segment, page, NULL);
+  void* end   = (uint8_t*)start + (page->capacity * mi_page_block_size(page));
+  *found = (p >= start && p < end);
+  return (!*found); // continue if not found
+}
+
+bool mi_heap_check_owned(mi_heap_t* heap, const void* p) {
+  mi_assert(heap != NULL);
+  if (heap==NULL || !mi_heap_is_initialized(heap)) return false;
+  if (((uintptr_t)p & (MI_INTPTR_SIZE - 1)) != 0) return false;  // only aligned pointers
+  bool found = false;
+  mi_heap_visit_pages(heap, &mi_heap_page_check_owned, (void*)p, &found);
+  return found;
+}
+
+bool mi_check_owned(const void* p) {
+  return mi_heap_check_owned(mi_prim_get_default_heap(), p);
+}
+
+/* -----------------------------------------------------------
+  Visit all heap blocks and areas
+  Todo: enable visiting abandoned pages, and
+        enable visiting all blocks of all heaps across threads
+----------------------------------------------------------- */
+
+// Separate struct to keep `mi_page_t` out of the public interface
+typedef struct mi_heap_area_ex_s {
+  mi_heap_area_t area;
+  mi_page_t*     page;
+} mi_heap_area_ex_t;
+
+static bool mi_heap_area_visit_blocks(const mi_heap_area_ex_t* xarea, mi_block_visit_fun* visitor, void* arg) {
+  mi_assert(xarea != NULL);
+  if (xarea==NULL) return true;
+  const mi_heap_area_t* area = &xarea->area;
+  mi_page_t* page = xarea->page;
+  mi_assert(page != NULL);
+  if (page == NULL) return true;
+
+  _mi_page_free_collect(page,true);
+  mi_assert_internal(page->local_free == NULL);
+  if (page->used == 0) return true;
+
+  const size_t bsize = mi_page_block_size(page);
+  const size_t ubsize = mi_page_usable_block_size(page); // without padding
+  size_t   psize;
+  uint8_t* pstart = _mi_page_start(_mi_page_segment(page), page, &psize);
+
+  if (page->capacity == 1) {
+    // optimize page with one block
+    mi_assert_internal(page->used == 1 && page->free == NULL);
+    return visitor(mi_page_heap(page), area, pstart, ubsize, arg);
+  }
+
+  // create a bitmap of free blocks.
+  #define MI_MAX_BLOCKS   (MI_SMALL_PAGE_SIZE / sizeof(void*))
+  uintptr_t free_map[MI_MAX_BLOCKS / sizeof(uintptr_t)];
+  memset(free_map, 0, sizeof(free_map));
+
+  #if MI_DEBUG>1
+  size_t free_count = 0;
+  #endif
+  for (mi_block_t* block = page->free; block != NULL; block = mi_block_next(page,block)) {
+    #if MI_DEBUG>1
+    free_count++;
+    #endif
+    mi_assert_internal((uint8_t*)block >= pstart && (uint8_t*)block < (pstart + psize));
+    size_t offset = (uint8_t*)block - pstart;
+    mi_assert_internal(offset % bsize == 0);
+    size_t blockidx = offset / bsize;  // Todo: avoid division?
+    mi_assert_internal( blockidx < MI_MAX_BLOCKS);
+    size_t bitidx = (blockidx / sizeof(uintptr_t));
+    size_t bit = blockidx - (bitidx * sizeof(uintptr_t));
+    free_map[bitidx] |= ((uintptr_t)1 << bit);
+  }
+  mi_assert_internal(page->capacity == (free_count + page->used));
+
+  // walk through all blocks skipping the free ones
+  #if MI_DEBUG>1
+  size_t used_count = 0;
+  #endif
+  for (size_t i = 0; i < page->capacity; i++) {
+    size_t bitidx = (i / sizeof(uintptr_t));
+    size_t bit = i - (bitidx * sizeof(uintptr_t));
+    uintptr_t m = free_map[bitidx];
+    if (bit == 0 && m == UINTPTR_MAX) {
+      i += (sizeof(uintptr_t) - 1); // skip a run of free blocks
+    }
+    else if ((m & ((uintptr_t)1 << bit)) == 0) {
+      #if MI_DEBUG>1
+      used_count++;
+      #endif
+      uint8_t* block = pstart + (i * bsize);
+      if (!visitor(mi_page_heap(page), area, block, ubsize, arg)) return false;
+    }
+  }
+  mi_assert_internal(page->used == used_count);
+  return true;
+}
+
+typedef bool (mi_heap_area_visit_fun)(const mi_heap_t* heap, const mi_heap_area_ex_t* area, void* arg);
+
+
+static bool mi_heap_visit_areas_page(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_t* page, void* vfun, void* arg) {
+  MI_UNUSED(heap);
+  MI_UNUSED(pq);
+  mi_heap_area_visit_fun* fun = (mi_heap_area_visit_fun*)vfun;
+  mi_heap_area_ex_t xarea;
+  const size_t bsize = mi_page_block_size(page);
+  const size_t ubsize = mi_page_usable_block_size(page);
+  xarea.page = page;
+  xarea.area.reserved = page->reserved * bsize;
+  xarea.area.committed = page->capacity * bsize;
+  xarea.area.blocks = _mi_page_start(_mi_page_segment(page), page, NULL);
+  xarea.area.used = page->used;   // number of blocks in use (#553)
+  xarea.area.block_size = ubsize;
+  xarea.area.full_block_size = bsize;
+  return fun(heap, &xarea, arg);
+}
+
+// Visit all heap pages as areas
+static bool mi_heap_visit_areas(const mi_heap_t* heap, mi_heap_area_visit_fun* visitor, void* arg) {
+  if (visitor == NULL) return false;
+  return mi_heap_visit_pages((mi_heap_t*)heap, &mi_heap_visit_areas_page, (void*)(visitor), arg); // note: function pointer to void* :-{
+}
+
+// Just to pass arguments
+typedef struct mi_visit_blocks_args_s {
+  bool  visit_blocks;
+  mi_block_visit_fun* visitor;
+  void* arg;
+} mi_visit_blocks_args_t;
+
+static bool mi_heap_area_visitor(const mi_heap_t* heap, const mi_heap_area_ex_t* xarea, void* arg) {
+  mi_visit_blocks_args_t* args = (mi_visit_blocks_args_t*)arg;
+  if (!args->visitor(heap, &xarea->area, NULL, xarea->area.block_size, args->arg)) return false;
+  if (args->visit_blocks) {
+    return mi_heap_area_visit_blocks(xarea, args->visitor, args->arg);
+  }
+  else {
+    return true;
+  }
+}
+
+// Visit all blocks in a heap
+bool mi_heap_visit_blocks(const mi_heap_t* heap, bool visit_blocks, mi_block_visit_fun* visitor, void* arg) {
+  mi_visit_blocks_args_t args = { visit_blocks, visitor, arg };
+  return mi_heap_visit_areas(heap, &mi_heap_area_visitor, &args);
+}
diff --git a/Objects/mimalloc/init.c b/Objects/mimalloc/init.c
new file mode 100644
index 00000000000000..7dfa7657737117
--- /dev/null
+++ b/Objects/mimalloc/init.c
@@ -0,0 +1,709 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/prim.h"
+
+#include <string.h>  // memcpy, memset
+#include <stdlib.h>  // atexit
+
+
+// Empty page used to initialize the small free pages array
+const mi_page_t _mi_page_empty = {
+  0, false, false, false,
+  0,       // capacity
+  0,       // reserved capacity
+  { 0 },   // flags
+  false,   // is_zero
+  0,       // retire_expire
+  NULL,    // free
+  0,       // used
+  0,       // xblock_size
+  NULL,    // local_free
+  #if (MI_PADDING || MI_ENCODE_FREELIST)
+  { 0, 0 },
+  #endif
+  MI_ATOMIC_VAR_INIT(0), // xthread_free
+  MI_ATOMIC_VAR_INIT(0), // xheap
+  NULL, NULL
+  #if MI_INTPTR_SIZE==8
+  , { 0 }  // padding
+  #endif
+};
+
+#define MI_PAGE_EMPTY() ((mi_page_t*)&_mi_page_empty)
+
+#if (MI_SMALL_WSIZE_MAX==128)
+#if (MI_PADDING>0) && (MI_INTPTR_SIZE >= 8)
+#define MI_SMALL_PAGES_EMPTY  { MI_INIT128(MI_PAGE_EMPTY), MI_PAGE_EMPTY(), MI_PAGE_EMPTY() }
+#elif (MI_PADDING>0)
+#define MI_SMALL_PAGES_EMPTY  { MI_INIT128(MI_PAGE_EMPTY), MI_PAGE_EMPTY(), MI_PAGE_EMPTY(), MI_PAGE_EMPTY() }
+#else
+#define MI_SMALL_PAGES_EMPTY  { MI_INIT128(MI_PAGE_EMPTY), MI_PAGE_EMPTY() }
+#endif
+#else
+#error "define right initialization sizes corresponding to MI_SMALL_WSIZE_MAX"
+#endif
+
+// Empty page queues for every bin
+#define QNULL(sz)  { NULL, NULL, (sz)*sizeof(uintptr_t) }
+#define MI_PAGE_QUEUES_EMPTY \
+  { QNULL(1), \
+    QNULL(     1), QNULL(     2), QNULL(     3), QNULL(     4), QNULL(     5), QNULL(     6), QNULL(     7), QNULL(     8), /* 8 */ \
+    QNULL(    10), QNULL(    12), QNULL(    14), QNULL(    16), QNULL(    20), QNULL(    24), QNULL(    28), QNULL(    32), /* 16 */ \
+    QNULL(    40), QNULL(    48), QNULL(    56), QNULL(    64), QNULL(    80), QNULL(    96), QNULL(   112), QNULL(   128), /* 24 */ \
+    QNULL(   160), QNULL(   192), QNULL(   224), QNULL(   256), QNULL(   320), QNULL(   384), QNULL(   448), QNULL(   512), /* 32 */ \
+    QNULL(   640), QNULL(   768), QNULL(   896), QNULL(  1024), QNULL(  1280), QNULL(  1536), QNULL(  1792), QNULL(  2048), /* 40 */ \
+    QNULL(  2560), QNULL(  3072), QNULL(  3584), QNULL(  4096), QNULL(  5120), QNULL(  6144), QNULL(  7168), QNULL(  8192), /* 48 */ \
+    QNULL( 10240), QNULL( 12288), QNULL( 14336), QNULL( 16384), QNULL( 20480), QNULL( 24576), QNULL( 28672), QNULL( 32768), /* 56 */ \
+    QNULL( 40960), QNULL( 49152), QNULL( 57344), QNULL( 65536), QNULL( 81920), QNULL( 98304), QNULL(114688), QNULL(131072), /* 64 */ \
+    QNULL(163840), QNULL(196608), QNULL(229376), QNULL(262144), QNULL(327680), QNULL(393216), QNULL(458752), QNULL(524288), /* 72 */ \
+    QNULL(MI_MEDIUM_OBJ_WSIZE_MAX + 1  /* 655360, Huge queue */), \
+    QNULL(MI_MEDIUM_OBJ_WSIZE_MAX + 2) /* Full queue */ }
+
+#define MI_STAT_COUNT_NULL()  {0,0,0,0}
+
+// Empty statistics
+#if MI_STAT>1
+#define MI_STAT_COUNT_END_NULL()  , { MI_STAT_COUNT_NULL(), MI_INIT32(MI_STAT_COUNT_NULL) }
+#else
+#define MI_STAT_COUNT_END_NULL()
+#endif
+
+#define MI_STATS_NULL  \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), MI_STAT_COUNT_NULL(), \
+  MI_STAT_COUNT_NULL(), \
+  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
+  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } \
+  MI_STAT_COUNT_END_NULL()
+
+
+// Empty slice span queues for every bin
+#define SQNULL(sz)  { NULL, NULL, sz }
+#define MI_SEGMENT_SPAN_QUEUES_EMPTY \
+  { SQNULL(1), \
+    SQNULL(     1), SQNULL(     2), SQNULL(     3), SQNULL(     4), SQNULL(     5), SQNULL(     6), SQNULL(     7), SQNULL(    10), /*  8 */ \
+    SQNULL(    12), SQNULL(    14), SQNULL(    16), SQNULL(    20), SQNULL(    24), SQNULL(    28), SQNULL(    32), SQNULL(    40), /* 16 */ \
+    SQNULL(    48), SQNULL(    56), SQNULL(    64), SQNULL(    80), SQNULL(    96), SQNULL(   112), SQNULL(   128), SQNULL(   160), /* 24 */ \
+    SQNULL(   192), SQNULL(   224), SQNULL(   256), SQNULL(   320), SQNULL(   384), SQNULL(   448), SQNULL(   512), SQNULL(   640), /* 32 */ \
+    SQNULL(   768), SQNULL(   896), SQNULL(  1024) /* 35 */ }
+
+
+// --------------------------------------------------------
+// Statically allocate an empty heap as the initial
+// thread local value for the default heap,
+// and statically allocate the backing heap for the main
+// thread so it can function without doing any allocation
+// itself (as accessing a thread local for the first time
+// may lead to allocation itself on some platforms)
+// --------------------------------------------------------
+
+mi_decl_cache_align const mi_heap_t _mi_heap_empty = {
+  NULL,
+  MI_SMALL_PAGES_EMPTY,
+  MI_PAGE_QUEUES_EMPTY,
+  MI_ATOMIC_VAR_INIT(NULL),
+  0,                // tid
+  0,                // cookie
+  0,                // arena id
+  { 0, 0 },         // keys
+  { {0}, {0}, 0, true }, // random
+  0,                // page count
+  MI_BIN_FULL, 0,   // page retired min/max
+  NULL,             // next
+  false
+};
+
+#define tld_empty_stats  ((mi_stats_t*)((uint8_t*)&tld_empty + offsetof(mi_tld_t,stats)))
+#define tld_empty_os     ((mi_os_tld_t*)((uint8_t*)&tld_empty + offsetof(mi_tld_t,os)))
+
+mi_decl_cache_align static const mi_tld_t tld_empty = {
+  0,
+  false,
+  NULL, NULL,
+  { MI_SEGMENT_SPAN_QUEUES_EMPTY, 0, 0, 0, 0, tld_empty_stats, tld_empty_os }, // segments
+  { 0, tld_empty_stats }, // os
+  { MI_STATS_NULL }       // stats
+};
+
+mi_threadid_t _mi_thread_id(void) mi_attr_noexcept {
+  return _mi_prim_thread_id();
+}
+
+// the thread-local default heap for allocation
+mi_decl_thread mi_heap_t* _mi_heap_default = (mi_heap_t*)&_mi_heap_empty;
+
+extern mi_heap_t _mi_heap_main;
+
+static mi_tld_t tld_main = {
+  0, false,
+  &_mi_heap_main, & _mi_heap_main,
+  { MI_SEGMENT_SPAN_QUEUES_EMPTY, 0, 0, 0, 0, &tld_main.stats, &tld_main.os }, // segments
+  { 0, &tld_main.stats },  // os
+  { MI_STATS_NULL }       // stats
+};
+
+mi_heap_t _mi_heap_main = {
+  &tld_main,
+  MI_SMALL_PAGES_EMPTY,
+  MI_PAGE_QUEUES_EMPTY,
+  MI_ATOMIC_VAR_INIT(NULL),
+  0,                // thread id
+  0,                // initial cookie
+  0,                // arena id
+  { 0, 0 },         // the key of the main heap can be fixed (unlike page keys that need to be secure!)
+  { {0x846ca68b}, {0}, 0, true },  // random
+  0,                // page count
+  MI_BIN_FULL, 0,   // page retired min/max
+  NULL,             // next heap
+  false             // can reclaim
+};
+
+bool _mi_process_is_initialized = false;  // set to `true` in `mi_process_init`.
+
+mi_stats_t _mi_stats_main = { MI_STATS_NULL };
+
+
+static void mi_heap_main_init(void) {
+  if (_mi_heap_main.cookie == 0) {
+    _mi_heap_main.thread_id = _mi_thread_id();
+    _mi_heap_main.cookie = 1;
+    #if defined(_WIN32) && !defined(MI_SHARED_LIB)
+      _mi_random_init_weak(&_mi_heap_main.random);    // prevent allocation failure during bcrypt dll initialization with static linking
+    #else
+      _mi_random_init(&_mi_heap_main.random);
+    #endif
+    _mi_heap_main.cookie  = _mi_heap_random_next(&_mi_heap_main);
+    _mi_heap_main.keys[0] = _mi_heap_random_next(&_mi_heap_main);
+    _mi_heap_main.keys[1] = _mi_heap_random_next(&_mi_heap_main);
+  }
+}
+
+mi_heap_t* _mi_heap_main_get(void) {
+  mi_heap_main_init();
+  return &_mi_heap_main;
+}
+
+
+/* -----------------------------------------------------------
+  Initialization and freeing of the thread local heaps
+----------------------------------------------------------- */
+
+// note: in x64 in release build `sizeof(mi_thread_data_t)` is under 4KiB (= OS page size).
+typedef struct mi_thread_data_s {
+  mi_heap_t  heap;  // must come first due to cast in `_mi_heap_done`
+  mi_tld_t   tld;
+  mi_memid_t memid;
+} mi_thread_data_t;
+
+
+// Thread meta-data is allocated directly from the OS. For
+// some programs that do not use thread pools and allocate and
+// destroy many OS threads, this may causes too much overhead
+// per thread so we maintain a small cache of recently freed metadata.
+
+#define TD_CACHE_SIZE (16)
+static _Atomic(mi_thread_data_t*) td_cache[TD_CACHE_SIZE];
+
+static mi_thread_data_t* mi_thread_data_zalloc(void) {
+  // try to find thread metadata in the cache
+  bool is_zero = false;
+  mi_thread_data_t* td = NULL;
+  for (int i = 0; i < TD_CACHE_SIZE; i++) {
+    td = mi_atomic_load_ptr_relaxed(mi_thread_data_t, &td_cache[i]);
+    if (td != NULL) {
+      // found cached allocation, try use it
+      td = mi_atomic_exchange_ptr_acq_rel(mi_thread_data_t, &td_cache[i], NULL);
+      if (td != NULL) {
+        break;
+      }
+    }
+  }
+
+  // if that fails, allocate as meta data
+  if (td == NULL) {
+    mi_memid_t memid;
+    td = (mi_thread_data_t*)_mi_os_alloc(sizeof(mi_thread_data_t), &memid, &_mi_stats_main);
+    if (td == NULL) {
+      // if this fails, try once more. (issue #257)
+      td = (mi_thread_data_t*)_mi_os_alloc(sizeof(mi_thread_data_t), &memid, &_mi_stats_main);
+      if (td == NULL) {
+        // really out of memory
+        _mi_error_message(ENOMEM, "unable to allocate thread local heap metadata (%zu bytes)\n", sizeof(mi_thread_data_t));
+      }
+    }
+    if (td != NULL) {
+      td->memid = memid;
+      is_zero = memid.initially_zero;
+    }
+  }
+
+  if (td != NULL && !is_zero) {
+    _mi_memzero_aligned(td, sizeof(*td));
+  }
+  return td;
+}
+
+static void mi_thread_data_free( mi_thread_data_t* tdfree ) {
+  // try to add the thread metadata to the cache
+  for (int i = 0; i < TD_CACHE_SIZE; i++) {
+    mi_thread_data_t* td = mi_atomic_load_ptr_relaxed(mi_thread_data_t, &td_cache[i]);
+    if (td == NULL) {
+      mi_thread_data_t* expected = NULL;
+      if (mi_atomic_cas_ptr_weak_acq_rel(mi_thread_data_t, &td_cache[i], &expected, tdfree)) {
+        return;
+      }
+    }
+  }
+  // if that fails, just free it directly
+  _mi_os_free(tdfree, sizeof(mi_thread_data_t), tdfree->memid, &_mi_stats_main);
+}
+
+void _mi_thread_data_collect(void) {
+  // free all thread metadata from the cache
+  for (int i = 0; i < TD_CACHE_SIZE; i++) {
+    mi_thread_data_t* td = mi_atomic_load_ptr_relaxed(mi_thread_data_t, &td_cache[i]);
+    if (td != NULL) {
+      td = mi_atomic_exchange_ptr_acq_rel(mi_thread_data_t, &td_cache[i], NULL);
+      if (td != NULL) {
+        _mi_os_free(td, sizeof(mi_thread_data_t), td->memid, &_mi_stats_main);
+      }
+    }
+  }
+}
+
+// Initialize the thread local default heap, called from `mi_thread_init`
+static bool _mi_heap_init(void) {
+  if (mi_heap_is_initialized(mi_prim_get_default_heap())) return true;
+  if (_mi_is_main_thread()) {
+    // mi_assert_internal(_mi_heap_main.thread_id != 0);  // can happen on freeBSD where alloc is called before any initialization
+    // the main heap is statically allocated
+    mi_heap_main_init();
+    _mi_heap_set_default_direct(&_mi_heap_main);
+    //mi_assert_internal(_mi_heap_default->tld->heap_backing == mi_prim_get_default_heap());
+  }
+  else {
+    // use `_mi_os_alloc` to allocate directly from the OS
+    mi_thread_data_t* td = mi_thread_data_zalloc();
+    if (td == NULL) return false;
+
+    mi_tld_t*  tld = &td->tld;
+    mi_heap_t* heap = &td->heap;
+    _mi_memcpy_aligned(tld, &tld_empty, sizeof(*tld));
+    _mi_memcpy_aligned(heap, &_mi_heap_empty, sizeof(*heap));
+    heap->thread_id = _mi_thread_id();
+    _mi_random_init(&heap->random);
+    heap->cookie  = _mi_heap_random_next(heap) | 1;
+    heap->keys[0] = _mi_heap_random_next(heap);
+    heap->keys[1] = _mi_heap_random_next(heap);
+    heap->tld = tld;
+    tld->heap_backing = heap;
+    tld->heaps = heap;
+    tld->segments.stats = &tld->stats;
+    tld->segments.os = &tld->os;
+    tld->os.stats = &tld->stats;
+    _mi_heap_set_default_direct(heap);
+  }
+  return false;
+}
+
+// Free the thread local default heap (called from `mi_thread_done`)
+static bool _mi_heap_done(mi_heap_t* heap) {
+  if (!mi_heap_is_initialized(heap)) return true;
+
+  // reset default heap
+  _mi_heap_set_default_direct(_mi_is_main_thread() ? &_mi_heap_main : (mi_heap_t*)&_mi_heap_empty);
+
+  // switch to backing heap
+  heap = heap->tld->heap_backing;
+  if (!mi_heap_is_initialized(heap)) return false;
+
+  // delete all non-backing heaps in this thread
+  mi_heap_t* curr = heap->tld->heaps;
+  while (curr != NULL) {
+    mi_heap_t* next = curr->next; // save `next` as `curr` will be freed
+    if (curr != heap) {
+      mi_assert_internal(!mi_heap_is_backing(curr));
+      mi_heap_delete(curr);
+    }
+    curr = next;
+  }
+  mi_assert_internal(heap->tld->heaps == heap && heap->next == NULL);
+  mi_assert_internal(mi_heap_is_backing(heap));
+
+  // collect if not the main thread
+  if (heap != &_mi_heap_main) {
+    _mi_heap_collect_abandon(heap);
+  }
+
+  // merge stats
+  _mi_stats_done(&heap->tld->stats);
+
+  // free if not the main thread
+  if (heap != &_mi_heap_main) {
+    // the following assertion does not always hold for huge segments as those are always treated
+    // as abondened: one may allocate it in one thread, but deallocate in another in which case
+    // the count can be too large or negative. todo: perhaps not count huge segments? see issue #363
+    // mi_assert_internal(heap->tld->segments.count == 0 || heap->thread_id != _mi_thread_id());
+    mi_thread_data_free((mi_thread_data_t*)heap);
+  }
+  else {
+    #if 0
+    // never free the main thread even in debug mode; if a dll is linked statically with mimalloc,
+    // there may still be delete/free calls after the mi_fls_done is called. Issue #207
+    _mi_heap_destroy_pages(heap);
+    mi_assert_internal(heap->tld->heap_backing == &_mi_heap_main);
+    #endif
+  }
+  return false;
+}
+
+
+
+// --------------------------------------------------------
+// Try to run `mi_thread_done()` automatically so any memory
+// owned by the thread but not yet released can be abandoned
+// and re-owned by another thread.
+//
+// 1. windows dynamic library:
+//     call from DllMain on DLL_THREAD_DETACH
+// 2. windows static library:
+//     use `FlsAlloc` to call a destructor when the thread is done
+// 3. unix, pthreads:
+//     use a pthread key to call a destructor when a pthread is done
+//
+// In the last two cases we also need to call `mi_process_init`
+// to set up the thread local keys.
+// --------------------------------------------------------
+
+// Set up handlers so `mi_thread_done` is called automatically
+static void mi_process_setup_auto_thread_done(void) {
+  static bool tls_initialized = false; // fine if it races
+  if (tls_initialized) return;
+  tls_initialized = true;
+  _mi_prim_thread_init_auto_done();
+  _mi_heap_set_default_direct(&_mi_heap_main);
+}
+
+
+bool _mi_is_main_thread(void) {
+  return (_mi_heap_main.thread_id==0 || _mi_heap_main.thread_id == _mi_thread_id());
+}
+
+static _Atomic(size_t) thread_count = MI_ATOMIC_VAR_INIT(1);
+
+size_t  _mi_current_thread_count(void) {
+  return mi_atomic_load_relaxed(&thread_count);
+}
+
+// This is called from the `mi_malloc_generic`
+void mi_thread_init(void) mi_attr_noexcept
+{
+  // ensure our process has started already
+  mi_process_init();
+
+  // initialize the thread local default heap
+  // (this will call `_mi_heap_set_default_direct` and thus set the
+  //  fiber/pthread key to a non-zero value, ensuring `_mi_thread_done` is called)
+  if (_mi_heap_init()) return;  // returns true if already initialized
+
+  _mi_stat_increase(&_mi_stats_main.threads, 1);
+  mi_atomic_increment_relaxed(&thread_count);
+  //_mi_verbose_message("thread init: 0x%zx\n", _mi_thread_id());
+}
+
+void mi_thread_done(void) mi_attr_noexcept {
+  _mi_thread_done(NULL);
+}
+
+void _mi_thread_done(mi_heap_t* heap)
+{
+  // calling with NULL implies using the default heap
+  if (heap == NULL) {
+    heap = mi_prim_get_default_heap();
+    if (heap == NULL) return;
+  }
+
+  // prevent re-entrancy through heap_done/heap_set_default_direct (issue #699)
+  if (!mi_heap_is_initialized(heap)) {
+    return;
+  }
+
+  // adjust stats
+  mi_atomic_decrement_relaxed(&thread_count);
+  _mi_stat_decrease(&_mi_stats_main.threads, 1);
+
+  // check thread-id as on Windows shutdown with FLS the main (exit) thread may call this on thread-local heaps...
+  if (heap->thread_id != _mi_thread_id()) return;
+
+  // abandon the thread local heap
+  if (_mi_heap_done(heap)) return;  // returns true if already ran
+}
+
+void _mi_heap_set_default_direct(mi_heap_t* heap)  {
+  mi_assert_internal(heap != NULL);
+  #if defined(MI_TLS_SLOT)
+  mi_prim_tls_slot_set(MI_TLS_SLOT,heap);
+  #elif defined(MI_TLS_PTHREAD_SLOT_OFS)
+  *mi_tls_pthread_heap_slot() = heap;
+  #elif defined(MI_TLS_PTHREAD)
+  // we use _mi_heap_default_key
+  #else
+  _mi_heap_default = heap;
+  #endif
+
+  // ensure the default heap is passed to `_mi_thread_done`
+  // setting to a non-NULL value also ensures `mi_thread_done` is called.
+  _mi_prim_thread_associate_default_heap(heap);
+}
+
+
+// --------------------------------------------------------
+// Run functions on process init/done, and thread init/done
+// --------------------------------------------------------
+static void mi_cdecl mi_process_done(void);
+
+static bool os_preloading = true;    // true until this module is initialized
+static bool mi_redirected = false;   // true if malloc redirects to mi_malloc
+
+// Returns true if this module has not been initialized; Don't use C runtime routines until it returns false.
+bool mi_decl_noinline _mi_preloading(void) {
+  return os_preloading;
+}
+
+mi_decl_nodiscard bool mi_is_redirected(void) mi_attr_noexcept {
+  return mi_redirected;
+}
+
+// Communicate with the redirection module on Windows
+#if defined(_WIN32) && defined(MI_SHARED_LIB) && !defined(MI_WIN_NOREDIRECT)
+#ifdef __cplusplus
+extern "C" {
+#endif
+mi_decl_export void _mi_redirect_entry(DWORD reason) {
+  // called on redirection; careful as this may be called before DllMain
+  if (reason == DLL_PROCESS_ATTACH) {
+    mi_redirected = true;
+  }
+  else if (reason == DLL_PROCESS_DETACH) {
+    mi_redirected = false;
+  }
+  else if (reason == DLL_THREAD_DETACH) {
+    mi_thread_done();
+  }
+}
+__declspec(dllimport) bool mi_cdecl mi_allocator_init(const char** message);
+__declspec(dllimport) void mi_cdecl mi_allocator_done(void);
+#ifdef __cplusplus
+}
+#endif
+#else
+static bool mi_allocator_init(const char** message) {
+  if (message != NULL) *message = NULL;
+  return true;
+}
+static void mi_allocator_done(void) {
+  // nothing to do
+}
+#endif
+
+// Called once by the process loader
+static void mi_process_load(void) {
+  mi_heap_main_init();
+  #if defined(__APPLE__) || defined(MI_TLS_RECURSE_GUARD)
+  volatile mi_heap_t* dummy = _mi_heap_default; // access TLS to allocate it before setting tls_initialized to true;
+  if (dummy == NULL) return;                    // use dummy or otherwise the access may get optimized away (issue #697)
+  #endif
+  os_preloading = false;
+  mi_assert_internal(_mi_is_main_thread());
+  #if !(defined(_WIN32) && defined(MI_SHARED_LIB))  // use Dll process detach (see below) instead of atexit (issue #521)
+  atexit(&mi_process_done);
+  #endif
+  _mi_options_init();
+  mi_process_setup_auto_thread_done();
+  mi_process_init();
+  if (mi_redirected) _mi_verbose_message("malloc is redirected.\n");
+
+  // show message from the redirector (if present)
+  const char* msg = NULL;
+  mi_allocator_init(&msg);
+  if (msg != NULL && (mi_option_is_enabled(mi_option_verbose) || mi_option_is_enabled(mi_option_show_errors))) {
+    _mi_fputs(NULL,NULL,NULL,msg);
+  }
+
+  // reseed random
+  _mi_random_reinit_if_weak(&_mi_heap_main.random);
+}
+
+#if defined(_WIN32) && (defined(_M_IX86) || defined(_M_X64))
+#include <intrin.h>
+mi_decl_cache_align bool _mi_cpu_has_fsrm = false;
+
+static void mi_detect_cpu_features(void) {
+  // FSRM for fast rep movsb support (AMD Zen3+ (~2020) or Intel Ice Lake+ (~2017))
+  int32_t cpu_info[4];
+  __cpuid(cpu_info, 7);
+  _mi_cpu_has_fsrm = ((cpu_info[3] & (1 << 4)) != 0); // bit 4 of EDX : see <https://en.wikipedia.org/wiki/CPUID#EAX=7,_ECX=0:_Extended_Features>
+}
+#else
+static void mi_detect_cpu_features(void) {
+  // nothing
+}
+#endif
+
+// Initialize the process; called by thread_init or the process loader
+void mi_process_init(void) mi_attr_noexcept {
+  // ensure we are called once
+  static mi_atomic_once_t process_init;
+        #if _MSC_VER < 1920
+        mi_heap_main_init(); // vs2017 can dynamically re-initialize _mi_heap_main
+        #endif
+  if (!mi_atomic_once(&process_init)) return;
+  _mi_process_is_initialized = true;
+  _mi_verbose_message("process init: 0x%zx\n", _mi_thread_id());
+  mi_process_setup_auto_thread_done();
+
+  mi_detect_cpu_features();
+  _mi_os_init();
+  mi_heap_main_init();
+  #if MI_DEBUG
+  _mi_verbose_message("debug level : %d\n", MI_DEBUG);
+  #endif
+  _mi_verbose_message("secure level: %d\n", MI_SECURE);
+  _mi_verbose_message("mem tracking: %s\n", MI_TRACK_TOOL);
+  #if MI_TSAN
+  _mi_verbose_message("thread santizer enabled\n");
+  #endif
+  mi_thread_init();
+
+  #if defined(_WIN32)
+  // On windows, when building as a static lib the FLS cleanup happens to early for the main thread.
+  // To avoid this, set the FLS value for the main thread to NULL so the fls cleanup
+  // will not call _mi_thread_done on the (still executing) main thread. See issue #508.
+  _mi_prim_thread_associate_default_heap(NULL);
+  #endif
+
+  mi_stats_reset();  // only call stat reset *after* thread init (or the heap tld == NULL)
+  mi_track_init();
+
+  if (mi_option_is_enabled(mi_option_reserve_huge_os_pages)) {
+    size_t pages = mi_option_get_clamp(mi_option_reserve_huge_os_pages, 0, 128*1024);
+    long reserve_at = mi_option_get(mi_option_reserve_huge_os_pages_at);
+    if (reserve_at != -1) {
+      mi_reserve_huge_os_pages_at(pages, reserve_at, pages*500);
+    } else {
+      mi_reserve_huge_os_pages_interleave(pages, 0, pages*500);
+    }
+  }
+  if (mi_option_is_enabled(mi_option_reserve_os_memory)) {
+    long ksize = mi_option_get(mi_option_reserve_os_memory);
+    if (ksize > 0) {
+      mi_reserve_os_memory((size_t)ksize*MI_KiB, true /* commit? */, true /* allow large pages? */);
+    }
+  }
+}
+
+// Called when the process is done (through `at_exit`)
+static void mi_cdecl mi_process_done(void) {
+  // only shutdown if we were initialized
+  if (!_mi_process_is_initialized) return;
+  // ensure we are called once
+  static bool process_done = false;
+  if (process_done) return;
+  process_done = true;
+
+  // release any thread specific resources and ensure _mi_thread_done is called on all but the main thread
+  _mi_prim_thread_done_auto_done();
+
+  #ifndef MI_SKIP_COLLECT_ON_EXIT
+    #if (MI_DEBUG || !defined(MI_SHARED_LIB))
+    // free all memory if possible on process exit. This is not needed for a stand-alone process
+    // but should be done if mimalloc is statically linked into another shared library which
+    // is repeatedly loaded/unloaded, see issue #281.
+    mi_collect(true /* force */ );
+    #endif
+  #endif
+
+  // Forcefully release all retained memory; this can be dangerous in general if overriding regular malloc/free
+  // since after process_done there might still be other code running that calls `free` (like at_exit routines,
+  // or C-runtime termination code.
+  if (mi_option_is_enabled(mi_option_destroy_on_exit)) {
+    mi_collect(true /* force */);
+    _mi_heap_unsafe_destroy_all();     // forcefully release all memory held by all heaps (of this thread only!)
+    _mi_arena_unsafe_destroy_all(& _mi_heap_main_get()->tld->stats);
+  }
+
+  if (mi_option_is_enabled(mi_option_show_stats) || mi_option_is_enabled(mi_option_verbose)) {
+    mi_stats_print(NULL);
+  }
+  mi_allocator_done();
+  _mi_verbose_message("process done: 0x%zx\n", _mi_heap_main.thread_id);
+  os_preloading = true; // don't call the C runtime anymore
+}
+
+
+
+#if defined(_WIN32) && defined(MI_SHARED_LIB)
+  // Windows DLL: easy to hook into process_init and thread_done
+  __declspec(dllexport) BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
+    MI_UNUSED(reserved);
+    MI_UNUSED(inst);
+    if (reason==DLL_PROCESS_ATTACH) {
+      mi_process_load();
+    }
+    else if (reason==DLL_PROCESS_DETACH) {
+      mi_process_done();
+    }
+    else if (reason==DLL_THREAD_DETACH) {
+      if (!mi_is_redirected()) {
+        mi_thread_done();
+      }
+    }
+    return TRUE;
+  }
+
+#elif defined(_MSC_VER)
+  // MSVC: use data section magic for static libraries
+  // See <https://www.codeguru.com/cpp/misc/misc/applicationcontrol/article.php/c6945/Running-Code-Before-and-After-Main.htm>
+  static int _mi_process_init(void) {
+    mi_process_load();
+    return 0;
+  }
+  typedef int(*_mi_crt_callback_t)(void);
+  #if defined(_M_X64) || defined(_M_ARM64)
+    __pragma(comment(linker, "/include:" "_mi_msvc_initu"))
+    #pragma section(".CRT$XIU", long, read)
+  #else
+    __pragma(comment(linker, "/include:" "__mi_msvc_initu"))
+  #endif
+  #pragma data_seg(".CRT$XIU")
+  mi_decl_externc _mi_crt_callback_t _mi_msvc_initu[] = { &_mi_process_init };
+  #pragma data_seg()
+
+#elif defined(__cplusplus)
+  // C++: use static initialization to detect process start
+  static bool _mi_process_init(void) {
+    mi_process_load();
+    return (_mi_heap_main.thread_id != 0);
+  }
+  static bool mi_initialized = _mi_process_init();
+
+#elif defined(__GNUC__) || defined(__clang__)
+  // GCC,Clang: use the constructor attribute
+  static void __attribute__((constructor)) _mi_process_init(void) {
+    mi_process_load();
+  }
+
+#else
+#pragma message("define a way to call mi_process_load on your platform")
+#endif
diff --git a/Objects/mimalloc/options.c b/Objects/mimalloc/options.c
new file mode 100644
index 00000000000000..345b560e3e7f4c
--- /dev/null
+++ b/Objects/mimalloc/options.c
@@ -0,0 +1,571 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"  // mi_prim_out_stderr
+
+#include <stdio.h>      // FILE
+#include <stdlib.h>     // abort
+#include <stdarg.h>
+
+
+static long mi_max_error_count   = 16; // stop outputting errors after this (use < 0 for no limit)
+static long mi_max_warning_count = 16; // stop outputting warnings after this (use < 0 for no limit)
+
+static void mi_add_stderr_output(void);
+
+int mi_version(void) mi_attr_noexcept {
+  return MI_MALLOC_VERSION;
+}
+
+
+// --------------------------------------------------------
+// Options
+// These can be accessed by multiple threads and may be
+// concurrently initialized, but an initializing data race
+// is ok since they resolve to the same value.
+// --------------------------------------------------------
+typedef enum mi_init_e {
+  UNINIT,       // not yet initialized
+  DEFAULTED,    // not found in the environment, use default value
+  INITIALIZED   // found in environment or set explicitly
+} mi_init_t;
+
+typedef struct mi_option_desc_s {
+  long        value;  // the value
+  mi_init_t   init;   // is it initialized yet? (from the environment)
+  mi_option_t option; // for debugging: the option index should match the option
+  const char* name;   // option name without `mimalloc_` prefix
+  const char* legacy_name; // potential legacy option name
+} mi_option_desc_t;
+
+#define MI_OPTION(opt)                  mi_option_##opt, #opt, NULL
+#define MI_OPTION_LEGACY(opt,legacy)    mi_option_##opt, #opt, #legacy
+
+static mi_option_desc_t options[_mi_option_last] =
+{
+  // stable options
+  #if MI_DEBUG || defined(MI_SHOW_ERRORS)
+  { 1, UNINIT, MI_OPTION(show_errors) },
+  #else
+  { 0, UNINIT, MI_OPTION(show_errors) },
+  #endif
+  { 0, UNINIT, MI_OPTION(show_stats) },
+  { 0, UNINIT, MI_OPTION(verbose) },
+
+  // the following options are experimental and not all combinations make sense.
+  { 1, UNINIT, MI_OPTION(eager_commit) },               // commit per segment directly (4MiB)  (but see also `eager_commit_delay`)
+  { 2, UNINIT, MI_OPTION_LEGACY(arena_eager_commit,eager_region_commit) }, // eager commit arena's? 2 is used to enable this only on an OS that has overcommit (i.e. linux)
+  { 1, UNINIT, MI_OPTION_LEGACY(purge_decommits,reset_decommits) },        // purge decommits memory (instead of reset) (note: on linux this uses MADV_DONTNEED for decommit)
+  { 0, UNINIT, MI_OPTION_LEGACY(allow_large_os_pages,large_os_pages) },    // use large OS pages, use only with eager commit to prevent fragmentation of VMA's
+  { 0, UNINIT, MI_OPTION(reserve_huge_os_pages) },      // per 1GiB huge pages
+  {-1, UNINIT, MI_OPTION(reserve_huge_os_pages_at) },   // reserve huge pages at node N
+  { 0, UNINIT, MI_OPTION(reserve_os_memory)     },
+  { 0, UNINIT, MI_OPTION(deprecated_segment_cache) },   // cache N segments per thread
+  { 0, UNINIT, MI_OPTION(deprecated_page_reset) },      // reset page memory on free
+  { 0, UNINIT, MI_OPTION_LEGACY(abandoned_page_purge,abandoned_page_reset) },       // reset free page memory when a thread terminates
+  { 0, UNINIT, MI_OPTION(deprecated_segment_reset) },   // reset segment memory on free (needs eager commit)
+#if defined(__NetBSD__)
+  { 0, UNINIT, MI_OPTION(eager_commit_delay) },         // the first N segments per thread are not eagerly committed
+#else
+  { 1, UNINIT, MI_OPTION(eager_commit_delay) },         // the first N segments per thread are not eagerly committed (but per page in the segment on demand)
+#endif
+  { 10,  UNINIT, MI_OPTION_LEGACY(purge_delay,reset_delay) },  // purge delay in milli-seconds
+  { 0,   UNINIT, MI_OPTION(use_numa_nodes) },           // 0 = use available numa nodes, otherwise use at most N nodes.
+  { 0,   UNINIT, MI_OPTION(limit_os_alloc) },           // 1 = do not use OS memory for allocation (but only reserved arenas)
+  { 100, UNINIT, MI_OPTION(os_tag) },                   // only apple specific for now but might serve more or less related purpose
+  { 16,  UNINIT, MI_OPTION(max_errors) },               // maximum errors that are output
+  { 16,  UNINIT, MI_OPTION(max_warnings) },             // maximum warnings that are output
+  { 8,   UNINIT, MI_OPTION(max_segment_reclaim)},       // max. number of segment reclaims from the abandoned segments per try.
+  { 0,   UNINIT, MI_OPTION(destroy_on_exit)},           // release all OS memory on process exit; careful with dangling pointer or after-exit frees!
+  #if (MI_INTPTR_SIZE>4)
+  { 1024L * 1024L, UNINIT, MI_OPTION(arena_reserve) },  // reserve memory N KiB at a time
+  #else
+  {  128L * 1024L, UNINIT, MI_OPTION(arena_reserve) },
+  #endif
+  { 10,  UNINIT, MI_OPTION(arena_purge_mult) },        // purge delay multiplier for arena's
+  { 1,   UNINIT, MI_OPTION_LEGACY(purge_extend_delay, decommit_extend_delay) },
+};
+
+static void mi_option_init(mi_option_desc_t* desc);
+
+void _mi_options_init(void) {
+  // called on process load; should not be called before the CRT is initialized!
+  // (e.g. do not call this from process_init as that may run before CRT initialization)
+  mi_add_stderr_output(); // now it safe to use stderr for output
+  for(int i = 0; i < _mi_option_last; i++ ) {
+    mi_option_t option = (mi_option_t)i;
+    long l = mi_option_get(option); MI_UNUSED(l); // initialize
+    // if (option != mi_option_verbose)
+    {
+      mi_option_desc_t* desc = &options[option];
+      _mi_verbose_message("option '%s': %ld\n", desc->name, desc->value);
+    }
+  }
+  mi_max_error_count = mi_option_get(mi_option_max_errors);
+  mi_max_warning_count = mi_option_get(mi_option_max_warnings);
+}
+
+mi_decl_nodiscard long mi_option_get(mi_option_t option) {
+  mi_assert(option >= 0 && option < _mi_option_last);
+  if (option < 0 || option >= _mi_option_last) return 0;
+  mi_option_desc_t* desc = &options[option];
+  mi_assert(desc->option == option);  // index should match the option
+  if mi_unlikely(desc->init == UNINIT) {
+    mi_option_init(desc);
+  }
+  return desc->value;
+}
+
+mi_decl_nodiscard long mi_option_get_clamp(mi_option_t option, long min, long max) {
+  long x = mi_option_get(option);
+  return (x < min ? min : (x > max ? max : x));
+}
+
+mi_decl_nodiscard size_t mi_option_get_size(mi_option_t option) {
+  mi_assert_internal(option == mi_option_reserve_os_memory || option == mi_option_arena_reserve);
+  long x = mi_option_get(option);
+  return (x < 0 ? 0 : (size_t)x * MI_KiB);
+}
+
+void mi_option_set(mi_option_t option, long value) {
+  mi_assert(option >= 0 && option < _mi_option_last);
+  if (option < 0 || option >= _mi_option_last) return;
+  mi_option_desc_t* desc = &options[option];
+  mi_assert(desc->option == option);  // index should match the option
+  desc->value = value;
+  desc->init = INITIALIZED;
+}
+
+void mi_option_set_default(mi_option_t option, long value) {
+  mi_assert(option >= 0 && option < _mi_option_last);
+  if (option < 0 || option >= _mi_option_last) return;
+  mi_option_desc_t* desc = &options[option];
+  if (desc->init != INITIALIZED) {
+    desc->value = value;
+  }
+}
+
+mi_decl_nodiscard bool mi_option_is_enabled(mi_option_t option) {
+  return (mi_option_get(option) != 0);
+}
+
+void mi_option_set_enabled(mi_option_t option, bool enable) {
+  mi_option_set(option, (enable ? 1 : 0));
+}
+
+void mi_option_set_enabled_default(mi_option_t option, bool enable) {
+  mi_option_set_default(option, (enable ? 1 : 0));
+}
+
+void mi_option_enable(mi_option_t option) {
+  mi_option_set_enabled(option,true);
+}
+
+void mi_option_disable(mi_option_t option) {
+  mi_option_set_enabled(option,false);
+}
+
+static void mi_cdecl mi_out_stderr(const char* msg, void* arg) {
+  MI_UNUSED(arg);
+  if (msg != NULL && msg[0] != 0) {
+    _mi_prim_out_stderr(msg);
+  }
+}
+
+// Since an output function can be registered earliest in the `main`
+// function we also buffer output that happens earlier. When
+// an output function is registered it is called immediately with
+// the output up to that point.
+#ifndef MI_MAX_DELAY_OUTPUT
+#define MI_MAX_DELAY_OUTPUT ((size_t)(32*1024))
+#endif
+static char out_buf[MI_MAX_DELAY_OUTPUT+1];
+static _Atomic(size_t) out_len;
+
+static void mi_cdecl mi_out_buf(const char* msg, void* arg) {
+  MI_UNUSED(arg);
+  if (msg==NULL) return;
+  if (mi_atomic_load_relaxed(&out_len)>=MI_MAX_DELAY_OUTPUT) return;
+  size_t n = _mi_strlen(msg);
+  if (n==0) return;
+  // claim space
+  size_t start = mi_atomic_add_acq_rel(&out_len, n);
+  if (start >= MI_MAX_DELAY_OUTPUT) return;
+  // check bound
+  if (start+n >= MI_MAX_DELAY_OUTPUT) {
+    n = MI_MAX_DELAY_OUTPUT-start-1;
+  }
+  _mi_memcpy(&out_buf[start], msg, n);
+}
+
+static void mi_out_buf_flush(mi_output_fun* out, bool no_more_buf, void* arg) {
+  if (out==NULL) return;
+  // claim (if `no_more_buf == true`, no more output will be added after this point)
+  size_t count = mi_atomic_add_acq_rel(&out_len, (no_more_buf ? MI_MAX_DELAY_OUTPUT : 1));
+  // and output the current contents
+  if (count>MI_MAX_DELAY_OUTPUT) count = MI_MAX_DELAY_OUTPUT;
+  out_buf[count] = 0;
+  out(out_buf,arg);
+  if (!no_more_buf) {
+    out_buf[count] = '\n'; // if continue with the buffer, insert a newline
+  }
+}
+
+
+// Once this module is loaded, switch to this routine
+// which outputs to stderr and the delayed output buffer.
+static void mi_cdecl mi_out_buf_stderr(const char* msg, void* arg) {
+  mi_out_stderr(msg,arg);
+  mi_out_buf(msg,arg);
+}
+
+
+
+// --------------------------------------------------------
+// Default output handler
+// --------------------------------------------------------
+
+// Should be atomic but gives errors on many platforms as generally we cannot cast a function pointer to a uintptr_t.
+// For now, don't register output from multiple threads.
+static mi_output_fun* volatile mi_out_default; // = NULL
+static _Atomic(void*) mi_out_arg; // = NULL
+
+static mi_output_fun* mi_out_get_default(void** parg) {
+  if (parg != NULL) { *parg = mi_atomic_load_ptr_acquire(void,&mi_out_arg); }
+  mi_output_fun* out = mi_out_default;
+  return (out == NULL ? &mi_out_buf : out);
+}
+
+void mi_register_output(mi_output_fun* out, void* arg) mi_attr_noexcept {
+  mi_out_default = (out == NULL ? &mi_out_stderr : out); // stop using the delayed output buffer
+  mi_atomic_store_ptr_release(void,&mi_out_arg, arg);
+  if (out!=NULL) mi_out_buf_flush(out,true,arg);         // output all the delayed output now
+}
+
+// add stderr to the delayed output after the module is loaded
+static void mi_add_stderr_output(void) {
+  mi_assert_internal(mi_out_default == NULL);
+  mi_out_buf_flush(&mi_out_stderr, false, NULL); // flush current contents to stderr
+  mi_out_default = &mi_out_buf_stderr;           // and add stderr to the delayed output
+}
+
+// --------------------------------------------------------
+// Messages, all end up calling `_mi_fputs`.
+// --------------------------------------------------------
+static _Atomic(size_t) error_count;   // = 0;  // when >= max_error_count stop emitting errors
+static _Atomic(size_t) warning_count; // = 0;  // when >= max_warning_count stop emitting warnings
+
+// When overriding malloc, we may recurse into mi_vfprintf if an allocation
+// inside the C runtime causes another message.
+// In some cases (like on macOS) the loader already allocates which
+// calls into mimalloc; if we then access thread locals (like `recurse`)
+// this may crash as the access may call _tlv_bootstrap that tries to
+// (recursively) invoke malloc again to allocate space for the thread local
+// variables on demand. This is why we use a _mi_preloading test on such
+// platforms. However, C code generator may move the initial thread local address
+// load before the `if` and we therefore split it out in a separate funcion.
+static mi_decl_thread bool recurse = false;
+
+static mi_decl_noinline bool mi_recurse_enter_prim(void) {
+  if (recurse) return false;
+  recurse = true;
+  return true;
+}
+
+static mi_decl_noinline void mi_recurse_exit_prim(void) {
+  recurse = false;
+}
+
+static bool mi_recurse_enter(void) {
+  #if defined(__APPLE__) || defined(MI_TLS_RECURSE_GUARD)
+  if (_mi_preloading()) return false;
+  #endif
+  return mi_recurse_enter_prim();
+}
+
+static void mi_recurse_exit(void) {
+  #if defined(__APPLE__) || defined(MI_TLS_RECURSE_GUARD)
+  if (_mi_preloading()) return;
+  #endif
+  mi_recurse_exit_prim();
+}
+
+void _mi_fputs(mi_output_fun* out, void* arg, const char* prefix, const char* message) {
+  if (out==NULL || (void*)out==(void*)stdout || (void*)out==(void*)stderr) { // TODO: use mi_out_stderr for stderr?
+    if (!mi_recurse_enter()) return;
+    out = mi_out_get_default(&arg);
+    if (prefix != NULL) out(prefix, arg);
+    out(message, arg);
+    mi_recurse_exit();
+  }
+  else {
+    if (prefix != NULL) out(prefix, arg);
+    out(message, arg);
+  }
+}
+
+// Define our own limited `fprintf` that avoids memory allocation.
+// We do this using `snprintf` with a limited buffer.
+static void mi_vfprintf( mi_output_fun* out, void* arg, const char* prefix, const char* fmt, va_list args ) {
+  char buf[512];
+  if (fmt==NULL) return;
+  if (!mi_recurse_enter()) return;
+  vsnprintf(buf,sizeof(buf)-1,fmt,args);
+  mi_recurse_exit();
+  _mi_fputs(out,arg,prefix,buf);
+}
+
+void _mi_fprintf( mi_output_fun* out, void* arg, const char* fmt, ... ) {
+  va_list args;
+  va_start(args,fmt);
+  mi_vfprintf(out,arg,NULL,fmt,args);
+  va_end(args);
+}
+
+static void mi_vfprintf_thread(mi_output_fun* out, void* arg, const char* prefix, const char* fmt, va_list args) {
+  if (prefix != NULL && _mi_strnlen(prefix,33) <= 32 && !_mi_is_main_thread()) {
+    char tprefix[64];
+    snprintf(tprefix, sizeof(tprefix), "%sthread 0x%llx: ", prefix, (unsigned long long)_mi_thread_id());
+    mi_vfprintf(out, arg, tprefix, fmt, args);
+  }
+  else {
+    mi_vfprintf(out, arg, prefix, fmt, args);
+  }
+}
+
+void _mi_trace_message(const char* fmt, ...) {
+  if (mi_option_get(mi_option_verbose) <= 1) return;  // only with verbose level 2 or higher
+  va_list args;
+  va_start(args, fmt);
+  mi_vfprintf_thread(NULL, NULL, "mimalloc: ", fmt, args);
+  va_end(args);
+}
+
+void _mi_verbose_message(const char* fmt, ...) {
+  if (!mi_option_is_enabled(mi_option_verbose)) return;
+  va_list args;
+  va_start(args,fmt);
+  mi_vfprintf(NULL, NULL, "mimalloc: ", fmt, args);
+  va_end(args);
+}
+
+static void mi_show_error_message(const char* fmt, va_list args) {
+  if (!mi_option_is_enabled(mi_option_verbose)) {
+    if (!mi_option_is_enabled(mi_option_show_errors)) return;
+    if (mi_max_error_count >= 0 && (long)mi_atomic_increment_acq_rel(&error_count) > mi_max_error_count) return;
+  }
+  mi_vfprintf_thread(NULL, NULL, "mimalloc: error: ", fmt, args);
+}
+
+void _mi_warning_message(const char* fmt, ...) {
+  if (!mi_option_is_enabled(mi_option_verbose)) {
+    if (!mi_option_is_enabled(mi_option_show_errors)) return;
+    if (mi_max_warning_count >= 0 && (long)mi_atomic_increment_acq_rel(&warning_count) > mi_max_warning_count) return;
+  }
+  va_list args;
+  va_start(args,fmt);
+  mi_vfprintf_thread(NULL, NULL, "mimalloc: warning: ", fmt, args);
+  va_end(args);
+}
+
+
+#if MI_DEBUG
+void _mi_assert_fail(const char* assertion, const char* fname, unsigned line, const char* func ) {
+  _mi_fprintf(NULL, NULL, "mimalloc: assertion failed: at \"%s\":%u, %s\n  assertion: \"%s\"\n", fname, line, (func==NULL?"":func), assertion);
+  abort();
+}
+#endif
+
+// --------------------------------------------------------
+// Errors
+// --------------------------------------------------------
+
+static mi_error_fun* volatile  mi_error_handler; // = NULL
+static _Atomic(void*) mi_error_arg;     // = NULL
+
+static void mi_error_default(int err) {
+  MI_UNUSED(err);
+#if (MI_DEBUG>0)
+  if (err==EFAULT) {
+    #ifdef _MSC_VER
+    __debugbreak();
+    #endif
+    abort();
+  }
+#endif
+#if (MI_SECURE>0)
+  if (err==EFAULT) {  // abort on serious errors in secure mode (corrupted meta-data)
+    abort();
+  }
+#endif
+#if defined(MI_XMALLOC)
+  if (err==ENOMEM || err==EOVERFLOW) { // abort on memory allocation fails in xmalloc mode
+    abort();
+  }
+#endif
+}
+
+void mi_register_error(mi_error_fun* fun, void* arg) {
+  mi_error_handler = fun;  // can be NULL
+  mi_atomic_store_ptr_release(void,&mi_error_arg, arg);
+}
+
+void _mi_error_message(int err, const char* fmt, ...) {
+  // show detailed error message
+  va_list args;
+  va_start(args, fmt);
+  mi_show_error_message(fmt, args);
+  va_end(args);
+  // and call the error handler which may abort (or return normally)
+  if (mi_error_handler != NULL) {
+    mi_error_handler(err, mi_atomic_load_ptr_acquire(void,&mi_error_arg));
+  }
+  else {
+    mi_error_default(err);
+  }
+}
+
+// --------------------------------------------------------
+// Initialize options by checking the environment
+// --------------------------------------------------------
+char _mi_toupper(char c) {
+  if (c >= 'a' && c <= 'z') return (c - 'a' + 'A');
+                       else return c;
+}
+
+int _mi_strnicmp(const char* s, const char* t, size_t n) {
+  if (n == 0) return 0;
+  for (; *s != 0 && *t != 0 && n > 0; s++, t++, n--) {
+    if (_mi_toupper(*s) != _mi_toupper(*t)) break;
+  }
+  return (n == 0 ? 0 : *s - *t);
+}
+
+void _mi_strlcpy(char* dest, const char* src, size_t dest_size) {
+  if (dest==NULL || src==NULL || dest_size == 0) return;
+  // copy until end of src, or when dest is (almost) full
+  while (*src != 0 && dest_size > 1) {
+    *dest++ = *src++;
+    dest_size--;
+  }
+  // always zero terminate
+  *dest = 0;
+}
+
+void _mi_strlcat(char* dest, const char* src, size_t dest_size) {
+  if (dest==NULL || src==NULL || dest_size == 0) return;
+  // find end of string in the dest buffer
+  while (*dest != 0 && dest_size > 1) {
+    dest++;
+    dest_size--;
+  }
+  // and catenate
+  _mi_strlcpy(dest, src, dest_size);
+}
+
+size_t _mi_strlen(const char* s) {
+  if (s==NULL) return 0;
+  size_t len = 0;
+  while(s[len] != 0) { len++; }
+  return len;
+}
+
+size_t _mi_strnlen(const char* s, size_t max_len) {
+  if (s==NULL) return 0;
+  size_t len = 0;
+  while(s[len] != 0 && len < max_len) { len++; }
+  return len;
+}
+
+#ifdef MI_NO_GETENV
+static bool mi_getenv(const char* name, char* result, size_t result_size) {
+  MI_UNUSED(name);
+  MI_UNUSED(result);
+  MI_UNUSED(result_size);
+  return false;
+}
+#else
+static bool mi_getenv(const char* name, char* result, size_t result_size) {
+  if (name==NULL || result == NULL || result_size < 64) return false;
+  return _mi_prim_getenv(name,result,result_size);
+}
+#endif
+
+// TODO: implement ourselves to reduce dependencies on the C runtime
+#include <stdlib.h> // strtol
+#include <string.h> // strstr
+
+
+static void mi_option_init(mi_option_desc_t* desc) {
+  // Read option value from the environment
+  char s[64 + 1];
+  char buf[64+1];
+  _mi_strlcpy(buf, "mimalloc_", sizeof(buf));
+  _mi_strlcat(buf, desc->name, sizeof(buf));
+  bool found = mi_getenv(buf, s, sizeof(s));
+  if (!found && desc->legacy_name != NULL) {
+    _mi_strlcpy(buf, "mimalloc_", sizeof(buf));
+    _mi_strlcat(buf, desc->legacy_name, sizeof(buf));
+    found = mi_getenv(buf, s, sizeof(s));
+    if (found) {
+      _mi_warning_message("environment option \"mimalloc_%s\" is deprecated -- use \"mimalloc_%s\" instead.\n", desc->legacy_name, desc->name);
+    }
+  }
+
+  if (found) {
+    size_t len = _mi_strnlen(s, sizeof(buf) - 1);
+    for (size_t i = 0; i < len; i++) {
+      buf[i] = _mi_toupper(s[i]);
+    }
+    buf[len] = 0;
+    if (buf[0] == 0 || strstr("1;TRUE;YES;ON", buf) != NULL) {
+      desc->value = 1;
+      desc->init = INITIALIZED;
+    }
+    else if (strstr("0;FALSE;NO;OFF", buf) != NULL) {
+      desc->value = 0;
+      desc->init = INITIALIZED;
+    }
+    else {
+      char* end = buf;
+      long value = strtol(buf, &end, 10);
+      if (desc->option == mi_option_reserve_os_memory || desc->option == mi_option_arena_reserve) {
+        // this option is interpreted in KiB to prevent overflow of `long`
+        if (*end == 'K') { end++; }
+        else if (*end == 'M') { value *= MI_KiB; end++; }
+        else if (*end == 'G') { value *= MI_MiB; end++; }
+        else { value = (value + MI_KiB - 1) / MI_KiB; }
+        if (end[0] == 'I' && end[1] == 'B') { end += 2; }
+        else if (*end == 'B') { end++; }
+      }
+      if (*end == 0) {
+        desc->value = value;
+        desc->init = INITIALIZED;
+      }
+      else {
+        // set `init` first to avoid recursion through _mi_warning_message on mimalloc_verbose.
+        desc->init = DEFAULTED;
+        if (desc->option == mi_option_verbose && desc->value == 0) {
+          // if the 'mimalloc_verbose' env var has a bogus value we'd never know
+          // (since the value defaults to 'off') so in that case briefly enable verbose
+          desc->value = 1;
+          _mi_warning_message("environment option mimalloc_%s has an invalid value.\n", desc->name);
+          desc->value = 0;
+        }
+        else {
+          _mi_warning_message("environment option mimalloc_%s has an invalid value.\n", desc->name);
+        }
+      }
+    }
+    mi_assert_internal(desc->init != UNINIT);
+  }
+  else if (!_mi_preloading()) {
+    desc->init = DEFAULTED;
+  }
+}
diff --git a/Objects/mimalloc/os.c b/Objects/mimalloc/os.c
new file mode 100644
index 00000000000000..f3bc7184c41c5b
--- /dev/null
+++ b/Objects/mimalloc/os.c
@@ -0,0 +1,690 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"
+
+
+/* -----------------------------------------------------------
+  Initialization.
+  On windows initializes support for aligned allocation and
+  large OS pages (if MIMALLOC_LARGE_OS_PAGES is true).
+----------------------------------------------------------- */
+
+static mi_os_mem_config_t mi_os_mem_config = {
+  4096,   // page size
+  0,      // large page size (usually 2MiB)
+  4096,   // allocation granularity
+  true,   // has overcommit?  (if true we use MAP_NORESERVE on mmap systems)
+  false,  // must free whole? (on mmap systems we can free anywhere in a mapped range, but on Windows we must free the entire span)
+  true    // has virtual reserve? (if true we can reserve virtual address space without using commit or physical memory)
+};
+
+bool _mi_os_has_overcommit(void) {
+  return mi_os_mem_config.has_overcommit;
+}
+
+bool _mi_os_has_virtual_reserve(void) {
+  return mi_os_mem_config.has_virtual_reserve;
+}
+
+
+// OS (small) page size
+size_t _mi_os_page_size(void) {
+  return mi_os_mem_config.page_size;
+}
+
+// if large OS pages are supported (2 or 4MiB), then return the size, otherwise return the small page size (4KiB)
+size_t _mi_os_large_page_size(void) {
+  return (mi_os_mem_config.large_page_size != 0 ? mi_os_mem_config.large_page_size : _mi_os_page_size());
+}
+
+bool _mi_os_use_large_page(size_t size, size_t alignment) {
+  // if we have access, check the size and alignment requirements
+  if (mi_os_mem_config.large_page_size == 0 || !mi_option_is_enabled(mi_option_allow_large_os_pages)) return false;
+  return ((size % mi_os_mem_config.large_page_size) == 0 && (alignment % mi_os_mem_config.large_page_size) == 0);
+}
+
+// round to a good OS allocation size (bounded by max 12.5% waste)
+size_t _mi_os_good_alloc_size(size_t size) {
+  size_t align_size;
+  if (size < 512*MI_KiB) align_size = _mi_os_page_size();
+  else if (size < 2*MI_MiB) align_size = 64*MI_KiB;
+  else if (size < 8*MI_MiB) align_size = 256*MI_KiB;
+  else if (size < 32*MI_MiB) align_size = 1*MI_MiB;
+  else align_size = 4*MI_MiB;
+  if mi_unlikely(size >= (SIZE_MAX - align_size)) return size; // possible overflow?
+  return _mi_align_up(size, align_size);
+}
+
+void _mi_os_init(void) {
+  _mi_prim_mem_init(&mi_os_mem_config);
+}
+
+
+/* -----------------------------------------------------------
+  Util
+-------------------------------------------------------------- */
+bool _mi_os_decommit(void* addr, size_t size, mi_stats_t* stats);
+bool _mi_os_commit(void* addr, size_t size, bool* is_zero, mi_stats_t* tld_stats);
+
+static void* mi_align_up_ptr(void* p, size_t alignment) {
+  return (void*)_mi_align_up((uintptr_t)p, alignment);
+}
+
+static void* mi_align_down_ptr(void* p, size_t alignment) {
+  return (void*)_mi_align_down((uintptr_t)p, alignment);
+}
+
+
+/* -----------------------------------------------------------
+  aligned hinting
+-------------------------------------------------------------- */
+
+// On 64-bit systems, we can do efficient aligned allocation by using
+// the 2TiB to 30TiB area to allocate those.
+#if (MI_INTPTR_SIZE >= 8)
+static mi_decl_cache_align _Atomic(uintptr_t)aligned_base;
+
+// Return a MI_SEGMENT_SIZE aligned address that is probably available.
+// If this returns NULL, the OS will determine the address but on some OS's that may not be
+// properly aligned which can be more costly as it needs to be adjusted afterwards.
+// For a size > 1GiB this always returns NULL in order to guarantee good ASLR randomization;
+// (otherwise an initial large allocation of say 2TiB has a 50% chance to include (known) addresses
+//  in the middle of the 2TiB - 6TiB address range (see issue #372))
+
+#define MI_HINT_BASE ((uintptr_t)2 << 40)  // 2TiB start
+#define MI_HINT_AREA ((uintptr_t)4 << 40)  // upto 6TiB   (since before win8 there is "only" 8TiB available to processes)
+#define MI_HINT_MAX  ((uintptr_t)30 << 40) // wrap after 30TiB (area after 32TiB is used for huge OS pages)
+
+void* _mi_os_get_aligned_hint(size_t try_alignment, size_t size)
+{
+  if (try_alignment <= 1 || try_alignment > MI_SEGMENT_SIZE) return NULL;
+  size = _mi_align_up(size, MI_SEGMENT_SIZE);
+  if (size > 1*MI_GiB) return NULL;  // guarantee the chance of fixed valid address is at most 1/(MI_HINT_AREA / 1<<30) = 1/4096.
+  #if (MI_SECURE>0)
+  size += MI_SEGMENT_SIZE;        // put in `MI_SEGMENT_SIZE` virtual gaps between hinted blocks; this splits VLA's but increases guarded areas.
+  #endif
+
+  uintptr_t hint = mi_atomic_add_acq_rel(&aligned_base, size);
+  if (hint == 0 || hint > MI_HINT_MAX) {   // wrap or initialize
+    uintptr_t init = MI_HINT_BASE;
+    #if (MI_SECURE>0 || MI_DEBUG==0)       // security: randomize start of aligned allocations unless in debug mode
+    uintptr_t r = _mi_heap_random_next(mi_prim_get_default_heap());
+    init = init + ((MI_SEGMENT_SIZE * ((r>>17) & 0xFFFFF)) % MI_HINT_AREA);  // (randomly 20 bits)*4MiB == 0 to 4TiB
+    #endif
+    uintptr_t expected = hint + size;
+    mi_atomic_cas_strong_acq_rel(&aligned_base, &expected, init);
+    hint = mi_atomic_add_acq_rel(&aligned_base, size); // this may still give 0 or > MI_HINT_MAX but that is ok, it is a hint after all
+  }
+  if (hint%try_alignment != 0) return NULL;
+  return (void*)hint;
+}
+#else
+void* _mi_os_get_aligned_hint(size_t try_alignment, size_t size) {
+  MI_UNUSED(try_alignment); MI_UNUSED(size);
+  return NULL;
+}
+#endif
+
+
+/* -----------------------------------------------------------
+  Free memory
+-------------------------------------------------------------- */
+
+static void mi_os_free_huge_os_pages(void* p, size_t size, mi_stats_t* stats);
+
+static void mi_os_prim_free(void* addr, size_t size, bool still_committed, mi_stats_t* tld_stats) {
+  MI_UNUSED(tld_stats);
+  mi_assert_internal((size % _mi_os_page_size()) == 0);
+  if (addr == NULL || size == 0) return; // || _mi_os_is_huge_reserved(addr)
+  int err = _mi_prim_free(addr, size);
+  if (err != 0) {
+    _mi_warning_message("unable to free OS memory (error: %d (0x%x), size: 0x%zx bytes, address: %p)\n", err, err, size, addr);
+  }
+  mi_stats_t* stats = &_mi_stats_main;
+  if (still_committed) { _mi_stat_decrease(&stats->committed, size); }
+  _mi_stat_decrease(&stats->reserved, size);
+}
+
+void _mi_os_free_ex(void* addr, size_t size, bool still_committed, mi_memid_t memid, mi_stats_t* tld_stats) {
+  if (mi_memkind_is_os(memid.memkind)) {
+    size_t csize = _mi_os_good_alloc_size(size);
+    void* base = addr;
+    // different base? (due to alignment)
+    if (memid.mem.os.base != NULL) {
+      mi_assert(memid.mem.os.base <= addr);
+      mi_assert((uint8_t*)memid.mem.os.base + memid.mem.os.alignment >= (uint8_t*)addr);
+      base = memid.mem.os.base;
+      csize += ((uint8_t*)addr - (uint8_t*)memid.mem.os.base);
+    }
+    // free it
+    if (memid.memkind == MI_MEM_OS_HUGE) {
+      mi_assert(memid.is_pinned);
+      mi_os_free_huge_os_pages(base, csize, tld_stats);
+    }
+    else {
+      mi_os_prim_free(base, csize, still_committed, tld_stats);
+    }
+  }
+  else {
+    // nothing to do
+    mi_assert(memid.memkind < MI_MEM_OS);
+  }
+}
+
+void  _mi_os_free(void* p, size_t size, mi_memid_t memid, mi_stats_t* tld_stats) {
+  _mi_os_free_ex(p, size, true, memid, tld_stats);
+}
+
+
+/* -----------------------------------------------------------
+   Primitive allocation from the OS.
+-------------------------------------------------------------- */
+
+// Note: the `try_alignment` is just a hint and the returned pointer is not guaranteed to be aligned.
+static void* mi_os_prim_alloc(size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, mi_stats_t* stats) {
+  mi_assert_internal(size > 0 && (size % _mi_os_page_size()) == 0);
+  mi_assert_internal(is_zero != NULL);
+  mi_assert_internal(is_large != NULL);
+  if (size == 0) return NULL;
+  if (!commit) { allow_large = false; }
+  if (try_alignment == 0) { try_alignment = 1; } // avoid 0 to ensure there will be no divide by zero when aligning
+
+  *is_zero = false;
+  void* p = NULL;
+  int err = _mi_prim_alloc(size, try_alignment, commit, allow_large, is_large, is_zero, &p);
+  if (err != 0) {
+    _mi_warning_message("unable to allocate OS memory (error: %d (0x%x), size: 0x%zx bytes, align: 0x%zx, commit: %d, allow large: %d)\n", err, err, size, try_alignment, commit, allow_large);
+  }
+  mi_stat_counter_increase(stats->mmap_calls, 1);
+  if (p != NULL) {
+    _mi_stat_increase(&stats->reserved, size);
+    if (commit) {
+      _mi_stat_increase(&stats->committed, size);
+      // seems needed for asan (or `mimalloc-test-api` fails)
+      #ifdef MI_TRACK_ASAN
+      if (*is_zero) { mi_track_mem_defined(p,size); }
+               else { mi_track_mem_undefined(p,size); }
+      #endif
+    }
+  }
+  return p;
+}
+
+
+// Primitive aligned allocation from the OS.
+// This function guarantees the allocated memory is aligned.
+static void* mi_os_prim_alloc_aligned(size_t size, size_t alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, void** base, mi_stats_t* stats) {
+  mi_assert_internal(alignment >= _mi_os_page_size() && ((alignment & (alignment - 1)) == 0));
+  mi_assert_internal(size > 0 && (size % _mi_os_page_size()) == 0);
+  mi_assert_internal(is_large != NULL);
+  mi_assert_internal(is_zero != NULL);
+  mi_assert_internal(base != NULL);
+  if (!commit) allow_large = false;
+  if (!(alignment >= _mi_os_page_size() && ((alignment & (alignment - 1)) == 0))) return NULL;
+  size = _mi_align_up(size, _mi_os_page_size());
+
+  // try first with a hint (this will be aligned directly on Win 10+ or BSD)
+  void* p = mi_os_prim_alloc(size, alignment, commit, allow_large, is_large, is_zero, stats);
+  if (p == NULL) return NULL;
+
+  // aligned already?
+  if (((uintptr_t)p % alignment) == 0) {
+    *base = p;
+  }
+  else {
+    // if not aligned, free it, overallocate, and unmap around it
+    // NOTE(sgross): this warning causes issues in Python tests
+    // _mi_warning_message("unable to allocate aligned OS memory directly, fall back to over-allocation (size: 0x%zx bytes, address: %p, alignment: 0x%zx, commit: %d)\n", size, p, alignment, commit);
+    mi_os_prim_free(p, size, commit, stats);
+    if (size >= (SIZE_MAX - alignment)) return NULL; // overflow
+    const size_t over_size = size + alignment;
+
+    if (mi_os_mem_config.must_free_whole) {  // win32 virtualAlloc cannot free parts of an allocate block
+      // over-allocate uncommitted (virtual) memory
+      p = mi_os_prim_alloc(over_size, 1 /*alignment*/, false /* commit? */, false /* allow_large */, is_large, is_zero, stats);
+      if (p == NULL) return NULL;
+
+      // set p to the aligned part in the full region
+      // note: this is dangerous on Windows as VirtualFree needs the actual base pointer
+      // this is handled though by having the `base` field in the memid's
+      *base = p; // remember the base
+      p = mi_align_up_ptr(p, alignment);
+
+      // explicitly commit only the aligned part
+      if (commit) {
+        _mi_os_commit(p, size, NULL, stats);
+      }
+    }
+    else  { // mmap can free inside an allocation
+      // overallocate...
+      p = mi_os_prim_alloc(over_size, 1, commit, false, is_large, is_zero, stats);
+      if (p == NULL) return NULL;
+
+      // and selectively unmap parts around the over-allocated area. (noop on sbrk)
+      void* aligned_p = mi_align_up_ptr(p, alignment);
+      size_t pre_size = (uint8_t*)aligned_p - (uint8_t*)p;
+      size_t mid_size = _mi_align_up(size, _mi_os_page_size());
+      size_t post_size = over_size - pre_size - mid_size;
+      mi_assert_internal(pre_size < over_size&& post_size < over_size&& mid_size >= size);
+      if (pre_size > 0)  { mi_os_prim_free(p, pre_size, commit, stats); }
+      if (post_size > 0) { mi_os_prim_free((uint8_t*)aligned_p + mid_size, post_size, commit, stats); }
+      // we can return the aligned pointer on `mmap` (and sbrk) systems
+      p = aligned_p;
+      *base = aligned_p; // since we freed the pre part, `*base == p`.
+    }
+  }
+
+  mi_assert_internal(p == NULL || (p != NULL && *base != NULL && ((uintptr_t)p % alignment) == 0));
+  return p;
+}
+
+
+/* -----------------------------------------------------------
+  OS API: alloc and alloc_aligned
+----------------------------------------------------------- */
+
+void* _mi_os_alloc(size_t size, mi_memid_t* memid, mi_stats_t* tld_stats) {
+  MI_UNUSED(tld_stats);
+  *memid = _mi_memid_none();
+  mi_stats_t* stats = &_mi_stats_main;
+  if (size == 0) return NULL;
+  size = _mi_os_good_alloc_size(size);
+  bool os_is_large = false;
+  bool os_is_zero  = false;
+  void* p = mi_os_prim_alloc(size, 0, true, false, &os_is_large, &os_is_zero, stats);
+  if (p != NULL) {
+    *memid = _mi_memid_create_os(true, os_is_zero, os_is_large);
+  }
+  return p;
+}
+
+void* _mi_os_alloc_aligned(size_t size, size_t alignment, bool commit, bool allow_large, mi_memid_t* memid, mi_stats_t* tld_stats)
+{
+  MI_UNUSED(&_mi_os_get_aligned_hint); // suppress unused warnings
+  MI_UNUSED(tld_stats);
+  *memid = _mi_memid_none();
+  if (size == 0) return NULL;
+  size = _mi_os_good_alloc_size(size);
+  alignment = _mi_align_up(alignment, _mi_os_page_size());
+
+  bool os_is_large = false;
+  bool os_is_zero  = false;
+  void* os_base = NULL;
+  void* p = mi_os_prim_alloc_aligned(size, alignment, commit, allow_large, &os_is_large, &os_is_zero, &os_base, &_mi_stats_main /*tld->stats*/ );
+  if (p != NULL) {
+    *memid = _mi_memid_create_os(commit, os_is_zero, os_is_large);
+    memid->mem.os.base = os_base;
+    memid->mem.os.alignment = alignment;
+  }
+  return p;
+}
+
+/* -----------------------------------------------------------
+  OS aligned allocation with an offset. This is used
+  for large alignments > MI_ALIGNMENT_MAX. We use a large mimalloc
+  page where the object can be aligned at an offset from the start of the segment.
+  As we may need to overallocate, we need to free such pointers using `mi_free_aligned`
+  to use the actual start of the memory region.
+----------------------------------------------------------- */
+
+void* _mi_os_alloc_aligned_at_offset(size_t size, size_t alignment, size_t offset, bool commit, bool allow_large, mi_memid_t* memid, mi_stats_t* tld_stats) {
+  mi_assert(offset <= MI_SEGMENT_SIZE);
+  mi_assert(offset <= size);
+  mi_assert((alignment % _mi_os_page_size()) == 0);
+  *memid = _mi_memid_none();
+  if (offset > MI_SEGMENT_SIZE) return NULL;
+  if (offset == 0) {
+    // regular aligned allocation
+    return _mi_os_alloc_aligned(size, alignment, commit, allow_large, memid, tld_stats);
+  }
+  else {
+    // overallocate to align at an offset
+    const size_t extra = _mi_align_up(offset, alignment) - offset;
+    const size_t oversize = size + extra;
+    void* const start = _mi_os_alloc_aligned(oversize, alignment, commit, allow_large, memid, tld_stats);
+    if (start == NULL) return NULL;
+
+    void* const p = (uint8_t*)start + extra;
+    mi_assert(_mi_is_aligned((uint8_t*)p + offset, alignment));
+    // decommit the overallocation at the start
+    if (commit && extra > _mi_os_page_size()) {
+      _mi_os_decommit(start, extra, tld_stats);
+    }
+    return p;
+  }
+}
+
+/* -----------------------------------------------------------
+  OS memory API: reset, commit, decommit, protect, unprotect.
+----------------------------------------------------------- */
+
+// OS page align within a given area, either conservative (pages inside the area only),
+// or not (straddling pages outside the area is possible)
+static void* mi_os_page_align_areax(bool conservative, void* addr, size_t size, size_t* newsize) {
+  mi_assert(addr != NULL && size > 0);
+  if (newsize != NULL) *newsize = 0;
+  if (size == 0 || addr == NULL) return NULL;
+
+  // page align conservatively within the range
+  void* start = (conservative ? mi_align_up_ptr(addr, _mi_os_page_size())
+    : mi_align_down_ptr(addr, _mi_os_page_size()));
+  void* end = (conservative ? mi_align_down_ptr((uint8_t*)addr + size, _mi_os_page_size())
+    : mi_align_up_ptr((uint8_t*)addr + size, _mi_os_page_size()));
+  ptrdiff_t diff = (uint8_t*)end - (uint8_t*)start;
+  if (diff <= 0) return NULL;
+
+  mi_assert_internal((conservative && (size_t)diff <= size) || (!conservative && (size_t)diff >= size));
+  if (newsize != NULL) *newsize = (size_t)diff;
+  return start;
+}
+
+static void* mi_os_page_align_area_conservative(void* addr, size_t size, size_t* newsize) {
+  return mi_os_page_align_areax(true, addr, size, newsize);
+}
+
+bool _mi_os_commit(void* addr, size_t size, bool* is_zero, mi_stats_t* tld_stats) {
+  MI_UNUSED(tld_stats);
+  mi_stats_t* stats = &_mi_stats_main;
+  if (is_zero != NULL) { *is_zero = false; }
+  _mi_stat_increase(&stats->committed, size);  // use size for precise commit vs. decommit
+  _mi_stat_counter_increase(&stats->commit_calls, 1);
+
+  // page align range
+  size_t csize;
+  void* start = mi_os_page_align_areax(false /* conservative? */, addr, size, &csize);
+  if (csize == 0) return true;
+
+  // commit
+  bool os_is_zero = false;
+  int err = _mi_prim_commit(start, csize, &os_is_zero);
+  if (err != 0) {
+    _mi_warning_message("cannot commit OS memory (error: %d (0x%x), address: %p, size: 0x%zx bytes)\n", err, err, start, csize);
+    return false;
+  }
+  if (os_is_zero && is_zero != NULL) {
+    *is_zero = true;
+    mi_assert_expensive(mi_mem_is_zero(start, csize));
+  }
+  // note: the following seems required for asan (otherwise `mimalloc-test-stress` fails)
+  #ifdef MI_TRACK_ASAN
+  if (os_is_zero) { mi_track_mem_defined(start,csize); }
+             else { mi_track_mem_undefined(start,csize); }
+  #endif
+  return true;
+}
+
+static bool mi_os_decommit_ex(void* addr, size_t size, bool* needs_recommit, mi_stats_t* tld_stats) {
+  MI_UNUSED(tld_stats);
+  mi_stats_t* stats = &_mi_stats_main;
+  mi_assert_internal(needs_recommit!=NULL);
+  _mi_stat_decrease(&stats->committed, size);
+
+  // page align
+  size_t csize;
+  void* start = mi_os_page_align_area_conservative(addr, size, &csize);
+  if (csize == 0) return true;
+
+  // decommit
+  *needs_recommit = true;
+  int err = _mi_prim_decommit(start,csize,needs_recommit);
+  if (err != 0) {
+    _mi_warning_message("cannot decommit OS memory (error: %d (0x%x), address: %p, size: 0x%zx bytes)\n", err, err, start, csize);
+  }
+  mi_assert_internal(err == 0);
+  return (err == 0);
+}
+
+bool _mi_os_decommit(void* addr, size_t size, mi_stats_t* tld_stats) {
+  bool needs_recommit;
+  return mi_os_decommit_ex(addr, size, &needs_recommit, tld_stats);
+}
+
+
+// Signal to the OS that the address range is no longer in use
+// but may be used later again. This will release physical memory
+// pages and reduce swapping while keeping the memory committed.
+// We page align to a conservative area inside the range to reset.
+bool _mi_os_reset(void* addr, size_t size, mi_stats_t* stats) {
+  // page align conservatively within the range
+  size_t csize;
+  void* start = mi_os_page_align_area_conservative(addr, size, &csize);
+  if (csize == 0) return true;  // || _mi_os_is_huge_reserved(addr)
+  _mi_stat_increase(&stats->reset, csize);
+  _mi_stat_counter_increase(&stats->reset_calls, 1);
+
+  #if (MI_DEBUG>1) && !MI_SECURE && !MI_TRACK_ENABLED // && !MI_TSAN
+  memset(start, 0, csize); // pretend it is eagerly reset
+  #endif
+
+  int err = _mi_prim_reset(start, csize);
+  if (err != 0) {
+    _mi_warning_message("cannot reset OS memory (error: %d (0x%x), address: %p, size: 0x%zx bytes)\n", err, err, start, csize);
+  }
+  return (err == 0);
+}
+
+
+// either resets or decommits memory, returns true if the memory needs
+// to be recommitted if it is to be re-used later on.
+bool _mi_os_purge_ex(void* p, size_t size, bool allow_reset, mi_stats_t* stats)
+{
+  if (mi_option_get(mi_option_purge_delay) < 0) return false;  // is purging allowed?
+  _mi_stat_counter_increase(&stats->purge_calls, 1);
+  _mi_stat_increase(&stats->purged, size);
+
+  if (mi_option_is_enabled(mi_option_purge_decommits) &&   // should decommit?
+      !_mi_preloading())                                   // don't decommit during preloading (unsafe)
+  {
+    bool needs_recommit = true;
+    mi_os_decommit_ex(p, size, &needs_recommit, stats);
+    return needs_recommit;
+  }
+  else {
+    if (allow_reset) {  // this can sometimes be not allowed if the range is not fully committed
+      _mi_os_reset(p, size, stats);
+    }
+    return false;  // needs no recommit
+  }
+}
+
+// either resets or decommits memory, returns true if the memory needs
+// to be recommitted if it is to be re-used later on.
+bool _mi_os_purge(void* p, size_t size, mi_stats_t * stats) {
+  return _mi_os_purge_ex(p, size, true, stats);
+}
+
+// Protect a region in memory to be not accessible.
+static  bool mi_os_protectx(void* addr, size_t size, bool protect) {
+  // page align conservatively within the range
+  size_t csize = 0;
+  void* start = mi_os_page_align_area_conservative(addr, size, &csize);
+  if (csize == 0) return false;
+  /*
+  if (_mi_os_is_huge_reserved(addr)) {
+          _mi_warning_message("cannot mprotect memory allocated in huge OS pages\n");
+  }
+  */
+  int err = _mi_prim_protect(start,csize,protect);
+  if (err != 0) {
+    _mi_warning_message("cannot %s OS memory (error: %d (0x%x), address: %p, size: 0x%zx bytes)\n", (protect ? "protect" : "unprotect"), err, err, start, csize);
+  }
+  return (err == 0);
+}
+
+bool _mi_os_protect(void* addr, size_t size) {
+  return mi_os_protectx(addr, size, true);
+}
+
+bool _mi_os_unprotect(void* addr, size_t size) {
+  return mi_os_protectx(addr, size, false);
+}
+
+
+
+/* ----------------------------------------------------------------------------
+Support for allocating huge OS pages (1Gib) that are reserved up-front
+and possibly associated with a specific NUMA node. (use `numa_node>=0`)
+-----------------------------------------------------------------------------*/
+#define MI_HUGE_OS_PAGE_SIZE  (MI_GiB)
+
+
+#if (MI_INTPTR_SIZE >= 8)
+// To ensure proper alignment, use our own area for huge OS pages
+static mi_decl_cache_align _Atomic(uintptr_t)  mi_huge_start; // = 0
+
+// Claim an aligned address range for huge pages
+static uint8_t* mi_os_claim_huge_pages(size_t pages, size_t* total_size) {
+  if (total_size != NULL) *total_size = 0;
+  const size_t size = pages * MI_HUGE_OS_PAGE_SIZE;
+
+  uintptr_t start = 0;
+  uintptr_t end = 0;
+  uintptr_t huge_start = mi_atomic_load_relaxed(&mi_huge_start);
+  do {
+    start = huge_start;
+    if (start == 0) {
+      // Initialize the start address after the 32TiB area
+      start = ((uintptr_t)32 << 40);  // 32TiB virtual start address
+    #if (MI_SECURE>0 || MI_DEBUG==0)      // security: randomize start of huge pages unless in debug mode
+      uintptr_t r = _mi_heap_random_next(mi_prim_get_default_heap());
+      start = start + ((uintptr_t)MI_HUGE_OS_PAGE_SIZE * ((r>>17) & 0x0FFF));  // (randomly 12bits)*1GiB == between 0 to 4TiB
+    #endif
+    }
+    end = start + size;
+    mi_assert_internal(end % MI_SEGMENT_SIZE == 0);
+  } while (!mi_atomic_cas_strong_acq_rel(&mi_huge_start, &huge_start, end));
+
+  if (total_size != NULL) *total_size = size;
+  return (uint8_t*)start;
+}
+#else
+static uint8_t* mi_os_claim_huge_pages(size_t pages, size_t* total_size) {
+  MI_UNUSED(pages);
+  if (total_size != NULL) *total_size = 0;
+  return NULL;
+}
+#endif
+
+// Allocate MI_SEGMENT_SIZE aligned huge pages
+void* _mi_os_alloc_huge_os_pages(size_t pages, int numa_node, mi_msecs_t max_msecs, size_t* pages_reserved, size_t* psize, mi_memid_t* memid) {
+  *memid = _mi_memid_none();
+  if (psize != NULL) *psize = 0;
+  if (pages_reserved != NULL) *pages_reserved = 0;
+  size_t size = 0;
+  uint8_t* start = mi_os_claim_huge_pages(pages, &size);
+  if (start == NULL) return NULL; // or 32-bit systems
+
+  // Allocate one page at the time but try to place them contiguously
+  // We allocate one page at the time to be able to abort if it takes too long
+  // or to at least allocate as many as available on the system.
+  mi_msecs_t start_t = _mi_clock_start();
+  size_t page = 0;
+  bool all_zero = true;
+  while (page < pages) {
+    // allocate a page
+    bool is_zero = false;
+    void* addr = start + (page * MI_HUGE_OS_PAGE_SIZE);
+    void* p = NULL;
+    int err = _mi_prim_alloc_huge_os_pages(addr, MI_HUGE_OS_PAGE_SIZE, numa_node, &is_zero, &p);
+    if (!is_zero) { all_zero = false;  }
+    if (err != 0) {
+      _mi_warning_message("unable to allocate huge OS page (error: %d (0x%x), address: %p, size: %zx bytes)\n", err, err, addr, MI_HUGE_OS_PAGE_SIZE);
+      break;
+    }
+
+    // Did we succeed at a contiguous address?
+    if (p != addr) {
+      // no success, issue a warning and break
+      if (p != NULL) {
+        _mi_warning_message("could not allocate contiguous huge OS page %zu at %p\n", page, addr);
+        mi_os_prim_free(p, MI_HUGE_OS_PAGE_SIZE, true, &_mi_stats_main);
+      }
+      break;
+    }
+
+    // success, record it
+    page++;  // increase before timeout check (see issue #711)
+    _mi_stat_increase(&_mi_stats_main.committed, MI_HUGE_OS_PAGE_SIZE);
+    _mi_stat_increase(&_mi_stats_main.reserved, MI_HUGE_OS_PAGE_SIZE);
+
+    // check for timeout
+    if (max_msecs > 0) {
+      mi_msecs_t elapsed = _mi_clock_end(start_t);
+      if (page >= 1) {
+        mi_msecs_t estimate = ((elapsed / (page+1)) * pages);
+        if (estimate > 2*max_msecs) { // seems like we are going to timeout, break
+          elapsed = max_msecs + 1;
+        }
+      }
+      if (elapsed > max_msecs) {
+        _mi_warning_message("huge OS page allocation timed out (after allocating %zu page(s))\n", page);
+        break;
+      }
+    }
+  }
+  mi_assert_internal(page*MI_HUGE_OS_PAGE_SIZE <= size);
+  if (pages_reserved != NULL) { *pages_reserved = page; }
+  if (psize != NULL) { *psize = page * MI_HUGE_OS_PAGE_SIZE; }
+  if (page != 0) {
+    mi_assert(start != NULL);
+    *memid = _mi_memid_create_os(true /* is committed */, all_zero, true /* is_large */);
+    memid->memkind = MI_MEM_OS_HUGE;
+    mi_assert(memid->is_pinned);
+    #ifdef MI_TRACK_ASAN
+    if (all_zero) { mi_track_mem_defined(start,size); }
+    #endif
+  }
+  return (page == 0 ? NULL : start);
+}
+
+// free every huge page in a range individually (as we allocated per page)
+// note: needed with VirtualAlloc but could potentially be done in one go on mmap'd systems.
+static void mi_os_free_huge_os_pages(void* p, size_t size, mi_stats_t* stats) {
+  if (p==NULL || size==0) return;
+  uint8_t* base = (uint8_t*)p;
+  while (size >= MI_HUGE_OS_PAGE_SIZE) {
+    mi_os_prim_free(base, MI_HUGE_OS_PAGE_SIZE, true, stats);
+    size -= MI_HUGE_OS_PAGE_SIZE;
+    base += MI_HUGE_OS_PAGE_SIZE;
+  }
+}
+
+/* ----------------------------------------------------------------------------
+Support NUMA aware allocation
+-----------------------------------------------------------------------------*/
+
+_Atomic(size_t)  _mi_numa_node_count; // = 0   // cache the node count
+
+size_t _mi_os_numa_node_count_get(void) {
+  size_t count = mi_atomic_load_acquire(&_mi_numa_node_count);
+  if (count <= 0) {
+    long ncount = mi_option_get(mi_option_use_numa_nodes); // given explicitly?
+    if (ncount > 0) {
+      count = (size_t)ncount;
+    }
+    else {
+      count = _mi_prim_numa_node_count(); // or detect dynamically
+      if (count == 0) count = 1;
+    }
+    mi_atomic_store_release(&_mi_numa_node_count, count); // save it
+    _mi_verbose_message("using %zd numa regions\n", count);
+  }
+  return count;
+}
+
+int _mi_os_numa_node_get(mi_os_tld_t* tld) {
+  MI_UNUSED(tld);
+  size_t numa_count = _mi_os_numa_node_count();
+  if (numa_count<=1) return 0; // optimize on single numa node systems: always node 0
+  // never more than the node count and >= 0
+  size_t numa_node = _mi_prim_numa_node();
+  if (numa_node >= numa_count) { numa_node = numa_node % numa_count; }
+  return (int)numa_node;
+}
diff --git a/Objects/mimalloc/page-queue.c b/Objects/mimalloc/page-queue.c
new file mode 100644
index 00000000000000..cb54b3740196e9
--- /dev/null
+++ b/Objects/mimalloc/page-queue.c
@@ -0,0 +1,332 @@
+/*----------------------------------------------------------------------------
+Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* -----------------------------------------------------------
+  Definition of page queues for each block size
+----------------------------------------------------------- */
+
+#ifndef MI_IN_PAGE_C
+#error "this file should be included from 'page.c'"
+#endif
+
+/* -----------------------------------------------------------
+  Minimal alignment in machine words (i.e. `sizeof(void*)`)
+----------------------------------------------------------- */
+
+#if (MI_MAX_ALIGN_SIZE > 4*MI_INTPTR_SIZE)
+  #error "define alignment for more than 4x word size for this platform"
+#elif (MI_MAX_ALIGN_SIZE > 2*MI_INTPTR_SIZE)
+  #define MI_ALIGN4W   // 4 machine words minimal alignment
+#elif (MI_MAX_ALIGN_SIZE > MI_INTPTR_SIZE)
+  #define MI_ALIGN2W   // 2 machine words minimal alignment
+#else
+  // ok, default alignment is 1 word
+#endif
+
+
+/* -----------------------------------------------------------
+  Queue query
+----------------------------------------------------------- */
+
+
+static inline bool mi_page_queue_is_huge(const mi_page_queue_t* pq) {
+  return (pq->block_size == (MI_MEDIUM_OBJ_SIZE_MAX+sizeof(uintptr_t)));
+}
+
+static inline bool mi_page_queue_is_full(const mi_page_queue_t* pq) {
+  return (pq->block_size == (MI_MEDIUM_OBJ_SIZE_MAX+(2*sizeof(uintptr_t))));
+}
+
+static inline bool mi_page_queue_is_special(const mi_page_queue_t* pq) {
+  return (pq->block_size > MI_MEDIUM_OBJ_SIZE_MAX);
+}
+
+/* -----------------------------------------------------------
+  Bins
+----------------------------------------------------------- */
+
+// Return the bin for a given field size.
+// Returns MI_BIN_HUGE if the size is too large.
+// We use `wsize` for the size in "machine word sizes",
+// i.e. byte size == `wsize*sizeof(void*)`.
+static inline uint8_t mi_bin(size_t size) {
+  size_t wsize = _mi_wsize_from_size(size);
+  uint8_t bin;
+  if (wsize <= 1) {
+    bin = 1;
+  }
+  #if defined(MI_ALIGN4W)
+  else if (wsize <= 4) {
+    bin = (uint8_t)((wsize+1)&~1); // round to double word sizes
+  }
+  #elif defined(MI_ALIGN2W)
+  else if (wsize <= 8) {
+    bin = (uint8_t)((wsize+1)&~1); // round to double word sizes
+  }
+  #else
+  else if (wsize <= 8) {
+    bin = (uint8_t)wsize;
+  }
+  #endif
+  else if (wsize > MI_MEDIUM_OBJ_WSIZE_MAX) {
+    bin = MI_BIN_HUGE;
+  }
+  else {
+    #if defined(MI_ALIGN4W)
+    if (wsize <= 16) { wsize = (wsize+3)&~3; } // round to 4x word sizes
+    #endif
+    wsize--;
+    // find the highest bit
+    uint8_t b = (uint8_t)mi_bsr(wsize);  // note: wsize != 0
+    // and use the top 3 bits to determine the bin (~12.5% worst internal fragmentation).
+    // - adjust with 3 because we use do not round the first 8 sizes
+    //   which each get an exact bin
+    bin = ((b << 2) + (uint8_t)((wsize >> (b - 2)) & 0x03)) - 3;
+    mi_assert_internal(bin < MI_BIN_HUGE);
+  }
+  mi_assert_internal(bin > 0 && bin <= MI_BIN_HUGE);
+  return bin;
+}
+
+
+
+/* -----------------------------------------------------------
+  Queue of pages with free blocks
+----------------------------------------------------------- */
+
+uint8_t _mi_bin(size_t size) {
+  return mi_bin(size);
+}
+
+size_t _mi_bin_size(uint8_t bin) {
+  return _mi_heap_empty.pages[bin].block_size;
+}
+
+// Good size for allocation
+size_t mi_good_size(size_t size) mi_attr_noexcept {
+  if (size <= MI_MEDIUM_OBJ_SIZE_MAX) {
+    return _mi_bin_size(mi_bin(size));
+  }
+  else {
+    return _mi_align_up(size,_mi_os_page_size());
+  }
+}
+
+#if (MI_DEBUG>1)
+static bool mi_page_queue_contains(mi_page_queue_t* queue, const mi_page_t* page) {
+  mi_assert_internal(page != NULL);
+  mi_page_t* list = queue->first;
+  while (list != NULL) {
+    mi_assert_internal(list->next == NULL || list->next->prev == list);
+    mi_assert_internal(list->prev == NULL || list->prev->next == list);
+    if (list == page) break;
+    list = list->next;
+  }
+  return (list == page);
+}
+
+#endif
+
+#if (MI_DEBUG>1)
+static bool mi_heap_contains_queue(const mi_heap_t* heap, const mi_page_queue_t* pq) {
+  return (pq >= &heap->pages[0] && pq <= &heap->pages[MI_BIN_FULL]);
+}
+#endif
+
+static mi_page_queue_t* mi_page_queue_of(const mi_page_t* page) {
+  uint8_t bin = (mi_page_is_in_full(page) ? MI_BIN_FULL : mi_bin(page->xblock_size));
+  mi_heap_t* heap = mi_page_heap(page);
+  mi_assert_internal(heap != NULL && bin <= MI_BIN_FULL);
+  mi_page_queue_t* pq = &heap->pages[bin];
+  mi_assert_internal(bin >= MI_BIN_HUGE || page->xblock_size == pq->block_size);
+  mi_assert_expensive(mi_page_queue_contains(pq, page));
+  return pq;
+}
+
+static mi_page_queue_t* mi_heap_page_queue_of(mi_heap_t* heap, const mi_page_t* page) {
+  uint8_t bin = (mi_page_is_in_full(page) ? MI_BIN_FULL : mi_bin(page->xblock_size));
+  mi_assert_internal(bin <= MI_BIN_FULL);
+  mi_page_queue_t* pq = &heap->pages[bin];
+  mi_assert_internal(mi_page_is_in_full(page) || page->xblock_size == pq->block_size);
+  return pq;
+}
+
+// The current small page array is for efficiency and for each
+// small size (up to 256) it points directly to the page for that
+// size without having to compute the bin. This means when the
+// current free page queue is updated for a small bin, we need to update a
+// range of entries in `_mi_page_small_free`.
+static inline void mi_heap_queue_first_update(mi_heap_t* heap, const mi_page_queue_t* pq) {
+  mi_assert_internal(mi_heap_contains_queue(heap,pq));
+  size_t size = pq->block_size;
+  if (size > MI_SMALL_SIZE_MAX) return;
+
+  mi_page_t* page = pq->first;
+  if (pq->first == NULL) page = (mi_page_t*)&_mi_page_empty;
+
+  // find index in the right direct page array
+  size_t start;
+  size_t idx = _mi_wsize_from_size(size);
+  mi_page_t** pages_free = heap->pages_free_direct;
+
+  if (pages_free[idx] == page) return;  // already set
+
+  // find start slot
+  if (idx<=1) {
+    start = 0;
+  }
+  else {
+    // find previous size; due to minimal alignment upto 3 previous bins may need to be skipped
+    uint8_t bin = mi_bin(size);
+    const mi_page_queue_t* prev = pq - 1;
+    while( bin == mi_bin(prev->block_size) && prev > &heap->pages[0]) {
+      prev--;
+    }
+    start = 1 + _mi_wsize_from_size(prev->block_size);
+    if (start > idx) start = idx;
+  }
+
+  // set size range to the right page
+  mi_assert(start <= idx);
+  for (size_t sz = start; sz <= idx; sz++) {
+    pages_free[sz] = page;
+  }
+}
+
+/*
+static bool mi_page_queue_is_empty(mi_page_queue_t* queue) {
+  return (queue->first == NULL);
+}
+*/
+
+static void mi_page_queue_remove(mi_page_queue_t* queue, mi_page_t* page) {
+  mi_assert_internal(page != NULL);
+  mi_assert_expensive(mi_page_queue_contains(queue, page));
+  mi_assert_internal(page->xblock_size == queue->block_size || (page->xblock_size > MI_MEDIUM_OBJ_SIZE_MAX && mi_page_queue_is_huge(queue))  || (mi_page_is_in_full(page) && mi_page_queue_is_full(queue)));
+  mi_heap_t* heap = mi_page_heap(page);
+
+  if (page->prev != NULL) page->prev->next = page->next;
+  if (page->next != NULL) page->next->prev = page->prev;
+  if (page == queue->last)  queue->last = page->prev;
+  if (page == queue->first) {
+    queue->first = page->next;
+    // update first
+    mi_assert_internal(mi_heap_contains_queue(heap, queue));
+    mi_heap_queue_first_update(heap,queue);
+  }
+  heap->page_count--;
+  page->next = NULL;
+  page->prev = NULL;
+  // mi_atomic_store_ptr_release(mi_atomic_cast(void*, &page->heap), NULL);
+  mi_page_set_in_full(page,false);
+}
+
+
+static void mi_page_queue_push(mi_heap_t* heap, mi_page_queue_t* queue, mi_page_t* page) {
+  mi_assert_internal(mi_page_heap(page) == heap);
+  mi_assert_internal(!mi_page_queue_contains(queue, page));
+  #if MI_HUGE_PAGE_ABANDON
+  mi_assert_internal(_mi_page_segment(page)->kind != MI_SEGMENT_HUGE);
+  #endif
+  mi_assert_internal(page->xblock_size == queue->block_size ||
+                      (page->xblock_size > MI_MEDIUM_OBJ_SIZE_MAX) ||
+                        (mi_page_is_in_full(page) && mi_page_queue_is_full(queue)));
+
+  mi_page_set_in_full(page, mi_page_queue_is_full(queue));
+  // mi_atomic_store_ptr_release(mi_atomic_cast(void*, &page->heap), heap);
+  page->next = queue->first;
+  page->prev = NULL;
+  if (queue->first != NULL) {
+    mi_assert_internal(queue->first->prev == NULL);
+    queue->first->prev = page;
+    queue->first = page;
+  }
+  else {
+    queue->first = queue->last = page;
+  }
+
+  // update direct
+  mi_heap_queue_first_update(heap, queue);
+  heap->page_count++;
+}
+
+
+static void mi_page_queue_enqueue_from(mi_page_queue_t* to, mi_page_queue_t* from, mi_page_t* page) {
+  mi_assert_internal(page != NULL);
+  mi_assert_expensive(mi_page_queue_contains(from, page));
+  mi_assert_expensive(!mi_page_queue_contains(to, page));
+
+  mi_assert_internal((page->xblock_size == to->block_size && page->xblock_size == from->block_size) ||
+                     (page->xblock_size == to->block_size && mi_page_queue_is_full(from)) ||
+                     (page->xblock_size == from->block_size && mi_page_queue_is_full(to)) ||
+                     (page->xblock_size > MI_LARGE_OBJ_SIZE_MAX && mi_page_queue_is_huge(to)) ||
+                     (page->xblock_size > MI_LARGE_OBJ_SIZE_MAX && mi_page_queue_is_full(to)));
+
+  mi_heap_t* heap = mi_page_heap(page);
+  if (page->prev != NULL) page->prev->next = page->next;
+  if (page->next != NULL) page->next->prev = page->prev;
+  if (page == from->last)  from->last = page->prev;
+  if (page == from->first) {
+    from->first = page->next;
+    // update first
+    mi_assert_internal(mi_heap_contains_queue(heap, from));
+    mi_heap_queue_first_update(heap, from);
+  }
+
+  page->prev = to->last;
+  page->next = NULL;
+  if (to->last != NULL) {
+    mi_assert_internal(heap == mi_page_heap(to->last));
+    to->last->next = page;
+    to->last = page;
+  }
+  else {
+    to->first = page;
+    to->last = page;
+    mi_heap_queue_first_update(heap, to);
+  }
+
+  mi_page_set_in_full(page, mi_page_queue_is_full(to));
+}
+
+// Only called from `mi_heap_absorb`.
+size_t _mi_page_queue_append(mi_heap_t* heap, mi_page_queue_t* pq, mi_page_queue_t* append) {
+  mi_assert_internal(mi_heap_contains_queue(heap,pq));
+  mi_assert_internal(pq->block_size == append->block_size);
+
+  if (append->first==NULL) return 0;
+
+  // set append pages to new heap and count
+  size_t count = 0;
+  for (mi_page_t* page = append->first; page != NULL; page = page->next) {
+    // inline `mi_page_set_heap` to avoid wrong assertion during absorption;
+    // in this case it is ok to be delayed freeing since both "to" and "from" heap are still alive.
+    mi_atomic_store_release(&page->xheap, (uintptr_t)heap);
+    // set the flag to delayed free (not overriding NEVER_DELAYED_FREE) which has as a
+    // side effect that it spins until any DELAYED_FREEING is finished. This ensures
+    // that after appending only the new heap will be used for delayed free operations.
+    _mi_page_use_delayed_free(page, MI_USE_DELAYED_FREE, false);
+    count++;
+  }
+
+  if (pq->last==NULL) {
+    // take over afresh
+    mi_assert_internal(pq->first==NULL);
+    pq->first = append->first;
+    pq->last = append->last;
+    mi_heap_queue_first_update(heap, pq);
+  }
+  else {
+    // append to end
+    mi_assert_internal(pq->last!=NULL);
+    mi_assert_internal(append->first!=NULL);
+    pq->last->next = append->first;
+    append->first->prev = pq->last;
+    pq->last = append->last;
+  }
+  return count;
+}
diff --git a/Objects/mimalloc/page.c b/Objects/mimalloc/page.c
new file mode 100644
index 00000000000000..4610cf27afff75
--- /dev/null
+++ b/Objects/mimalloc/page.c
@@ -0,0 +1,939 @@
+/*----------------------------------------------------------------------------
+Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* -----------------------------------------------------------
+  The core of the allocator. Every segment contains
+  pages of a certain block size. The main function
+  exported is `mi_malloc_generic`.
+----------------------------------------------------------- */
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+
+/* -----------------------------------------------------------
+  Definition of page queues for each block size
+----------------------------------------------------------- */
+
+#define MI_IN_PAGE_C
+#include "page-queue.c"
+#undef MI_IN_PAGE_C
+
+
+/* -----------------------------------------------------------
+  Page helpers
+----------------------------------------------------------- */
+
+// Index a block in a page
+static inline mi_block_t* mi_page_block_at(const mi_page_t* page, void* page_start, size_t block_size, size_t i) {
+  MI_UNUSED(page);
+  mi_assert_internal(page != NULL);
+  mi_assert_internal(i <= page->reserved);
+  return (mi_block_t*)((uint8_t*)page_start + (i * block_size));
+}
+
+static void mi_page_init(mi_heap_t* heap, mi_page_t* page, size_t size, mi_tld_t* tld);
+static void mi_page_extend_free(mi_heap_t* heap, mi_page_t* page, mi_tld_t* tld);
+
+#if (MI_DEBUG>=3)
+static size_t mi_page_list_count(mi_page_t* page, mi_block_t* head) {
+  size_t count = 0;
+  while (head != NULL) {
+    mi_assert_internal(page == _mi_ptr_page(head));
+    count++;
+    head = mi_block_next(page, head);
+  }
+  return count;
+}
+
+/*
+// Start of the page available memory
+static inline uint8_t* mi_page_area(const mi_page_t* page) {
+  return _mi_page_start(_mi_page_segment(page), page, NULL);
+}
+*/
+
+static bool mi_page_list_is_valid(mi_page_t* page, mi_block_t* p) {
+  size_t psize;
+  uint8_t* page_area = _mi_page_start(_mi_page_segment(page), page, &psize);
+  mi_block_t* start = (mi_block_t*)page_area;
+  mi_block_t* end   = (mi_block_t*)(page_area + psize);
+  while(p != NULL) {
+    if (p < start || p >= end) return false;
+    p = mi_block_next(page, p);
+  }
+#if MI_DEBUG>3 // generally too expensive to check this
+  if (page->free_is_zero) {
+    const size_t ubsize = mi_page_usable_block_size(page);
+    for (mi_block_t* block = page->free; block != NULL; block = mi_block_next(page, block)) {
+      mi_assert_expensive(mi_mem_is_zero(block + 1, ubsize - sizeof(mi_block_t)));
+    }
+  }
+#endif
+  return true;
+}
+
+static bool mi_page_is_valid_init(mi_page_t* page) {
+  mi_assert_internal(page->xblock_size > 0);
+  mi_assert_internal(page->used <= page->capacity);
+  mi_assert_internal(page->capacity <= page->reserved);
+
+  mi_segment_t* segment = _mi_page_segment(page);
+  uint8_t* start = _mi_page_start(segment,page,NULL);
+  mi_assert_internal(start == _mi_segment_page_start(segment,page,NULL));
+  //const size_t bsize = mi_page_block_size(page);
+  //mi_assert_internal(start + page->capacity*page->block_size == page->top);
+
+  mi_assert_internal(mi_page_list_is_valid(page,page->free));
+  mi_assert_internal(mi_page_list_is_valid(page,page->local_free));
+
+  #if MI_DEBUG>3 // generally too expensive to check this
+  if (page->free_is_zero) {
+    const size_t ubsize = mi_page_usable_block_size(page);
+    for(mi_block_t* block = page->free; block != NULL; block = mi_block_next(page,block)) {
+      mi_assert_expensive(mi_mem_is_zero(block + 1, ubsize - sizeof(mi_block_t)));
+    }
+  }
+  #endif
+
+  #if !MI_TRACK_ENABLED && !MI_TSAN
+  mi_block_t* tfree = mi_page_thread_free(page);
+  mi_assert_internal(mi_page_list_is_valid(page, tfree));
+  //size_t tfree_count = mi_page_list_count(page, tfree);
+  //mi_assert_internal(tfree_count <= page->thread_freed + 1);
+  #endif
+
+  size_t free_count = mi_page_list_count(page, page->free) + mi_page_list_count(page, page->local_free);
+  mi_assert_internal(page->used + free_count == page->capacity);
+
+  return true;
+}
+
+extern bool _mi_process_is_initialized;             // has mi_process_init been called?
+
+bool _mi_page_is_valid(mi_page_t* page) {
+  mi_assert_internal(mi_page_is_valid_init(page));
+  #if MI_SECURE
+  mi_assert_internal(page->keys[0] != 0);
+  #endif
+  if (mi_page_heap(page)!=NULL) {
+    mi_segment_t* segment = _mi_page_segment(page);
+
+    mi_assert_internal(!_mi_process_is_initialized || segment->thread_id==0 || segment->thread_id == mi_page_heap(page)->thread_id);
+    #if MI_HUGE_PAGE_ABANDON
+    if (segment->kind != MI_SEGMENT_HUGE)
+    #endif
+    {
+      mi_page_queue_t* pq = mi_page_queue_of(page);
+      mi_assert_internal(mi_page_queue_contains(pq, page));
+      mi_assert_internal(pq->block_size==mi_page_block_size(page) || mi_page_block_size(page) > MI_MEDIUM_OBJ_SIZE_MAX || mi_page_is_in_full(page));
+      mi_assert_internal(mi_heap_contains_queue(mi_page_heap(page),pq));
+    }
+  }
+  return true;
+}
+#endif
+
+void _mi_page_use_delayed_free(mi_page_t* page, mi_delayed_t delay, bool override_never) {
+  while (!_mi_page_try_use_delayed_free(page, delay, override_never)) {
+    mi_atomic_yield();
+  }
+}
+
+bool _mi_page_try_use_delayed_free(mi_page_t* page, mi_delayed_t delay, bool override_never) {
+  mi_thread_free_t tfreex;
+  mi_delayed_t     old_delay;
+  mi_thread_free_t tfree;
+  size_t yield_count = 0;
+  do {
+    tfree = mi_atomic_load_acquire(&page->xthread_free); // note: must acquire as we can break/repeat this loop and not do a CAS;
+    tfreex = mi_tf_set_delayed(tfree, delay);
+    old_delay = mi_tf_delayed(tfree);
+    if mi_unlikely(old_delay == MI_DELAYED_FREEING) {
+      if (yield_count >= 4) return false;  // give up after 4 tries
+      yield_count++;
+      mi_atomic_yield(); // delay until outstanding MI_DELAYED_FREEING are done.
+      // tfree = mi_tf_set_delayed(tfree, MI_NO_DELAYED_FREE); // will cause CAS to busy fail
+    }
+    else if (delay == old_delay) {
+      break; // avoid atomic operation if already equal
+    }
+    else if (!override_never && old_delay == MI_NEVER_DELAYED_FREE) {
+      break; // leave never-delayed flag set
+    }
+  } while ((old_delay == MI_DELAYED_FREEING) ||
+           !mi_atomic_cas_weak_release(&page->xthread_free, &tfree, tfreex));
+
+  return true; // success
+}
+
+/* -----------------------------------------------------------
+  Page collect the `local_free` and `thread_free` lists
+----------------------------------------------------------- */
+
+// Collect the local `thread_free` list using an atomic exchange.
+// Note: The exchange must be done atomically as this is used right after
+// moving to the full list in `mi_page_collect_ex` and we need to
+// ensure that there was no race where the page became unfull just before the move.
+static void _mi_page_thread_free_collect(mi_page_t* page)
+{
+  mi_block_t* head;
+  mi_thread_free_t tfreex;
+  mi_thread_free_t tfree = mi_atomic_load_relaxed(&page->xthread_free);
+  do {
+    head = mi_tf_block(tfree);
+    tfreex = mi_tf_set_block(tfree,NULL);
+  } while (!mi_atomic_cas_weak_acq_rel(&page->xthread_free, &tfree, tfreex));
+
+  // return if the list is empty
+  if (head == NULL) return;
+
+  // find the tail -- also to get a proper count (without data races)
+  uint32_t max_count = page->capacity; // cannot collect more than capacity
+  uint32_t count = 1;
+  mi_block_t* tail = head;
+  mi_block_t* next;
+  while ((next = mi_block_next(page,tail)) != NULL && count <= max_count) {
+    count++;
+    tail = next;
+  }
+  // if `count > max_count` there was a memory corruption (possibly infinite list due to double multi-threaded free)
+  if (count > max_count) {
+    _mi_error_message(EFAULT, "corrupted thread-free list\n");
+    return; // the thread-free items cannot be freed
+  }
+
+  // and append the current local free list
+  mi_block_set_next(page,tail, page->local_free);
+  page->local_free = head;
+
+  // update counts now
+  page->used -= count;
+}
+
+void _mi_page_free_collect(mi_page_t* page, bool force) {
+  mi_assert_internal(page!=NULL);
+
+  // collect the thread free list
+  if (force || mi_page_thread_free(page) != NULL) {  // quick test to avoid an atomic operation
+    _mi_page_thread_free_collect(page);
+  }
+
+  // and the local free list
+  if (page->local_free != NULL) {
+    if mi_likely(page->free == NULL) {
+      // usual case
+      page->free = page->local_free;
+      page->local_free = NULL;
+      page->free_is_zero = false;
+    }
+    else if (force) {
+      // append -- only on shutdown (force) as this is a linear operation
+      mi_block_t* tail = page->local_free;
+      mi_block_t* next;
+      while ((next = mi_block_next(page, tail)) != NULL) {
+        tail = next;
+      }
+      mi_block_set_next(page, tail, page->free);
+      page->free = page->local_free;
+      page->local_free = NULL;
+      page->free_is_zero = false;
+    }
+  }
+
+  mi_assert_internal(!force || page->local_free == NULL);
+}
+
+
+
+/* -----------------------------------------------------------
+  Page fresh and retire
+----------------------------------------------------------- */
+
+// called from segments when reclaiming abandoned pages
+void _mi_page_reclaim(mi_heap_t* heap, mi_page_t* page) {
+  mi_assert_expensive(mi_page_is_valid_init(page));
+
+  mi_assert_internal(mi_page_heap(page) == heap);
+  mi_assert_internal(mi_page_thread_free_flag(page) != MI_NEVER_DELAYED_FREE);
+  #if MI_HUGE_PAGE_ABANDON
+  mi_assert_internal(_mi_page_segment(page)->kind != MI_SEGMENT_HUGE);
+  #endif
+
+  // TODO: push on full queue immediately if it is full?
+  mi_page_queue_t* pq = mi_page_queue(heap, mi_page_block_size(page));
+  mi_page_queue_push(heap, pq, page);
+  mi_assert_expensive(_mi_page_is_valid(page));
+}
+
+// allocate a fresh page from a segment
+static mi_page_t* mi_page_fresh_alloc(mi_heap_t* heap, mi_page_queue_t* pq, size_t block_size, size_t page_alignment) {
+  #if !MI_HUGE_PAGE_ABANDON
+  mi_assert_internal(pq != NULL);
+  mi_assert_internal(mi_heap_contains_queue(heap, pq));
+  mi_assert_internal(page_alignment > 0 || block_size > MI_MEDIUM_OBJ_SIZE_MAX || block_size == pq->block_size);
+  #endif
+  mi_page_t* page = _mi_segment_page_alloc(heap, block_size, page_alignment, &heap->tld->segments, &heap->tld->os);
+  if (page == NULL) {
+    // this may be out-of-memory, or an abandoned page was reclaimed (and in our queue)
+    return NULL;
+  }
+  mi_assert_internal(page_alignment >0 || block_size > MI_MEDIUM_OBJ_SIZE_MAX || _mi_page_segment(page)->kind != MI_SEGMENT_HUGE);
+  mi_assert_internal(pq!=NULL || page->xblock_size != 0);
+  mi_assert_internal(pq!=NULL || mi_page_block_size(page) >= block_size);
+  // a fresh page was found, initialize it
+  const size_t full_block_size = ((pq == NULL || mi_page_queue_is_huge(pq)) ? mi_page_block_size(page) : block_size); // see also: mi_segment_huge_page_alloc
+  mi_assert_internal(full_block_size >= block_size);
+  mi_page_init(heap, page, full_block_size, heap->tld);
+  mi_heap_stat_increase(heap, pages, 1);
+  if (pq != NULL) { mi_page_queue_push(heap, pq, page); }
+  mi_assert_expensive(_mi_page_is_valid(page));
+  return page;
+}
+
+// Get a fresh page to use
+static mi_page_t* mi_page_fresh(mi_heap_t* heap, mi_page_queue_t* pq) {
+  mi_assert_internal(mi_heap_contains_queue(heap, pq));
+  mi_page_t* page = mi_page_fresh_alloc(heap, pq, pq->block_size, 0);
+  if (page==NULL) return NULL;
+  mi_assert_internal(pq->block_size==mi_page_block_size(page));
+  mi_assert_internal(pq==mi_page_queue(heap, mi_page_block_size(page)));
+  return page;
+}
+
+/* -----------------------------------------------------------
+   Do any delayed frees
+   (put there by other threads if they deallocated in a full page)
+----------------------------------------------------------- */
+void _mi_heap_delayed_free_all(mi_heap_t* heap) {
+  while (!_mi_heap_delayed_free_partial(heap)) {
+    mi_atomic_yield();
+  }
+}
+
+// returns true if all delayed frees were processed
+bool _mi_heap_delayed_free_partial(mi_heap_t* heap) {
+  // take over the list (note: no atomic exchange since it is often NULL)
+  mi_block_t* block = mi_atomic_load_ptr_relaxed(mi_block_t, &heap->thread_delayed_free);
+  while (block != NULL && !mi_atomic_cas_ptr_weak_acq_rel(mi_block_t, &heap->thread_delayed_free, &block, NULL)) { /* nothing */ };
+  bool all_freed = true;
+
+  // and free them all
+  while(block != NULL) {
+    mi_block_t* next = mi_block_nextx(heap,block, heap->keys);
+    // use internal free instead of regular one to keep stats etc correct
+    if (!_mi_free_delayed_block(block)) {
+      // we might already start delayed freeing while another thread has not yet
+      // reset the delayed_freeing flag; in that case delay it further by reinserting the current block
+      // into the delayed free list
+      all_freed = false;
+      mi_block_t* dfree = mi_atomic_load_ptr_relaxed(mi_block_t, &heap->thread_delayed_free);
+      do {
+        mi_block_set_nextx(heap, block, dfree, heap->keys);
+      } while (!mi_atomic_cas_ptr_weak_release(mi_block_t,&heap->thread_delayed_free, &dfree, block));
+    }
+    block = next;
+  }
+  return all_freed;
+}
+
+/* -----------------------------------------------------------
+  Unfull, abandon, free and retire
+----------------------------------------------------------- */
+
+// Move a page from the full list back to a regular list
+void _mi_page_unfull(mi_page_t* page) {
+  mi_assert_internal(page != NULL);
+  mi_assert_expensive(_mi_page_is_valid(page));
+  mi_assert_internal(mi_page_is_in_full(page));
+  if (!mi_page_is_in_full(page)) return;
+
+  mi_heap_t* heap = mi_page_heap(page);
+  mi_page_queue_t* pqfull = &heap->pages[MI_BIN_FULL];
+  mi_page_set_in_full(page, false); // to get the right queue
+  mi_page_queue_t* pq = mi_heap_page_queue_of(heap, page);
+  mi_page_set_in_full(page, true);
+  mi_page_queue_enqueue_from(pq, pqfull, page);
+}
+
+static void mi_page_to_full(mi_page_t* page, mi_page_queue_t* pq) {
+  mi_assert_internal(pq == mi_page_queue_of(page));
+  mi_assert_internal(!mi_page_immediate_available(page));
+  mi_assert_internal(!mi_page_is_in_full(page));
+
+  if (mi_page_is_in_full(page)) return;
+  mi_page_queue_enqueue_from(&mi_page_heap(page)->pages[MI_BIN_FULL], pq, page);
+  _mi_page_free_collect(page,false);  // try to collect right away in case another thread freed just before MI_USE_DELAYED_FREE was set
+}
+
+
+// Abandon a page with used blocks at the end of a thread.
+// Note: only call if it is ensured that no references exist from
+// the `page->heap->thread_delayed_free` into this page.
+// Currently only called through `mi_heap_collect_ex` which ensures this.
+void _mi_page_abandon(mi_page_t* page, mi_page_queue_t* pq) {
+  mi_assert_internal(page != NULL);
+  mi_assert_expensive(_mi_page_is_valid(page));
+  mi_assert_internal(pq == mi_page_queue_of(page));
+  mi_assert_internal(mi_page_heap(page) != NULL);
+
+  mi_heap_t* pheap = mi_page_heap(page);
+
+  // remove from our page list
+  mi_segments_tld_t* segments_tld = &pheap->tld->segments;
+  mi_page_queue_remove(pq, page);
+
+  // page is no longer associated with our heap
+  mi_assert_internal(mi_page_thread_free_flag(page)==MI_NEVER_DELAYED_FREE);
+  mi_page_set_heap(page, NULL);
+
+#if (MI_DEBUG>1) && !MI_TRACK_ENABLED
+  // check there are no references left..
+  for (mi_block_t* block = (mi_block_t*)pheap->thread_delayed_free; block != NULL; block = mi_block_nextx(pheap, block, pheap->keys)) {
+    mi_assert_internal(_mi_ptr_page(block) != page);
+  }
+#endif
+
+  // and abandon it
+  mi_assert_internal(mi_page_heap(page) == NULL);
+  _mi_segment_page_abandon(page,segments_tld);
+}
+
+
+// Free a page with no more free blocks
+void _mi_page_free(mi_page_t* page, mi_page_queue_t* pq, bool force) {
+  mi_assert_internal(page != NULL);
+  mi_assert_expensive(_mi_page_is_valid(page));
+  mi_assert_internal(pq == mi_page_queue_of(page));
+  mi_assert_internal(mi_page_all_free(page));
+  mi_assert_internal(mi_page_thread_free_flag(page)!=MI_DELAYED_FREEING);
+
+  // no more aligned blocks in here
+  mi_page_set_has_aligned(page, false);
+
+  mi_heap_t* heap = mi_page_heap(page);
+
+  // remove from the page list
+  // (no need to do _mi_heap_delayed_free first as all blocks are already free)
+  mi_segments_tld_t* segments_tld = &heap->tld->segments;
+  mi_page_queue_remove(pq, page);
+
+  // and free it
+  mi_page_set_heap(page,NULL);
+  _mi_segment_page_free(page, force, segments_tld);
+}
+
+// Retire parameters
+#define MI_MAX_RETIRE_SIZE    (MI_MEDIUM_OBJ_SIZE_MAX)
+#define MI_RETIRE_CYCLES      (16)
+
+// Retire a page with no more used blocks
+// Important to not retire too quickly though as new
+// allocations might coming.
+// Note: called from `mi_free` and benchmarks often
+// trigger this due to freeing everything and then
+// allocating again so careful when changing this.
+void _mi_page_retire(mi_page_t* page) mi_attr_noexcept {
+  mi_assert_internal(page != NULL);
+  mi_assert_expensive(_mi_page_is_valid(page));
+  mi_assert_internal(mi_page_all_free(page));
+
+  mi_page_set_has_aligned(page, false);
+
+  // don't retire too often..
+  // (or we end up retiring and re-allocating most of the time)
+  // NOTE: refine this more: we should not retire if this
+  // is the only page left with free blocks. It is not clear
+  // how to check this efficiently though...
+  // for now, we don't retire if it is the only page left of this size class.
+  mi_page_queue_t* pq = mi_page_queue_of(page);
+  if mi_likely(page->xblock_size <= MI_MAX_RETIRE_SIZE && !mi_page_queue_is_special(pq)) {  // not too large && not full or huge queue?
+    if (pq->last==page && pq->first==page) { // the only page in the queue?
+      mi_stat_counter_increase(_mi_stats_main.page_no_retire,1);
+      page->retire_expire = 1 + (page->xblock_size <= MI_SMALL_OBJ_SIZE_MAX ? MI_RETIRE_CYCLES : MI_RETIRE_CYCLES/4);
+      mi_heap_t* heap = mi_page_heap(page);
+      mi_assert_internal(pq >= heap->pages);
+      const size_t index = pq - heap->pages;
+      mi_assert_internal(index < MI_BIN_FULL && index < MI_BIN_HUGE);
+      if (index < heap->page_retired_min) heap->page_retired_min = index;
+      if (index > heap->page_retired_max) heap->page_retired_max = index;
+      mi_assert_internal(mi_page_all_free(page));
+      return; // dont't free after all
+    }
+  }
+  _mi_page_free(page, pq, false);
+}
+
+// free retired pages: we don't need to look at the entire queues
+// since we only retire pages that are at the head position in a queue.
+void _mi_heap_collect_retired(mi_heap_t* heap, bool force) {
+  size_t min = MI_BIN_FULL;
+  size_t max = 0;
+  for(size_t bin = heap->page_retired_min; bin <= heap->page_retired_max; bin++) {
+    mi_page_queue_t* pq   = &heap->pages[bin];
+    mi_page_t*       page = pq->first;
+    if (page != NULL && page->retire_expire != 0) {
+      if (mi_page_all_free(page)) {
+        page->retire_expire--;
+        if (force || page->retire_expire == 0) {
+          _mi_page_free(pq->first, pq, force);
+        }
+        else {
+          // keep retired, update min/max
+          if (bin < min) min = bin;
+          if (bin > max) max = bin;
+        }
+      }
+      else {
+        page->retire_expire = 0;
+      }
+    }
+  }
+  heap->page_retired_min = min;
+  heap->page_retired_max = max;
+}
+
+
+/* -----------------------------------------------------------
+  Initialize the initial free list in a page.
+  In secure mode we initialize a randomized list by
+  alternating between slices.
+----------------------------------------------------------- */
+
+#define MI_MAX_SLICE_SHIFT  (6)   // at most 64 slices
+#define MI_MAX_SLICES       (1UL << MI_MAX_SLICE_SHIFT)
+#define MI_MIN_SLICES       (2)
+
+static void mi_page_free_list_extend_secure(mi_heap_t* const heap, mi_page_t* const page, const size_t bsize, const size_t extend, mi_stats_t* const stats) {
+  MI_UNUSED(stats);
+  #if (MI_SECURE<=2)
+  mi_assert_internal(page->free == NULL);
+  mi_assert_internal(page->local_free == NULL);
+  #endif
+  mi_assert_internal(page->capacity + extend <= page->reserved);
+  mi_assert_internal(bsize == mi_page_block_size(page));
+  void* const page_area = _mi_page_start(_mi_page_segment(page), page, NULL);
+
+  // initialize a randomized free list
+  // set up `slice_count` slices to alternate between
+  size_t shift = MI_MAX_SLICE_SHIFT;
+  while ((extend >> shift) == 0) {
+    shift--;
+  }
+  const size_t slice_count = (size_t)1U << shift;
+  const size_t slice_extend = extend / slice_count;
+  mi_assert_internal(slice_extend >= 1);
+  mi_block_t* blocks[MI_MAX_SLICES];   // current start of the slice
+  size_t      counts[MI_MAX_SLICES];   // available objects in the slice
+  for (size_t i = 0; i < slice_count; i++) {
+    blocks[i] = mi_page_block_at(page, page_area, bsize, page->capacity + i*slice_extend);
+    counts[i] = slice_extend;
+  }
+  counts[slice_count-1] += (extend % slice_count);  // final slice holds the modulus too (todo: distribute evenly?)
+
+  // and initialize the free list by randomly threading through them
+  // set up first element
+  const uintptr_t r = _mi_heap_random_next(heap);
+  size_t current = r % slice_count;
+  counts[current]--;
+  mi_block_t* const free_start = blocks[current];
+  // and iterate through the rest; use `random_shuffle` for performance
+  uintptr_t rnd = _mi_random_shuffle(r|1); // ensure not 0
+  for (size_t i = 1; i < extend; i++) {
+    // call random_shuffle only every INTPTR_SIZE rounds
+    const size_t round = i%MI_INTPTR_SIZE;
+    if (round == 0) rnd = _mi_random_shuffle(rnd);
+    // select a random next slice index
+    size_t next = ((rnd >> 8*round) & (slice_count-1));
+    while (counts[next]==0) {                            // ensure it still has space
+      next++;
+      if (next==slice_count) next = 0;
+    }
+    // and link the current block to it
+    counts[next]--;
+    mi_block_t* const block = blocks[current];
+    blocks[current] = (mi_block_t*)((uint8_t*)block + bsize);  // bump to the following block
+    mi_block_set_next(page, block, blocks[next]);   // and set next; note: we may have `current == next`
+    current = next;
+  }
+  // prepend to the free list (usually NULL)
+  mi_block_set_next(page, blocks[current], page->free);  // end of the list
+  page->free = free_start;
+}
+
+static mi_decl_noinline void mi_page_free_list_extend( mi_page_t* const page, const size_t bsize, const size_t extend, mi_stats_t* const stats)
+{
+  MI_UNUSED(stats);
+  #if (MI_SECURE <= 2)
+  mi_assert_internal(page->free == NULL);
+  mi_assert_internal(page->local_free == NULL);
+  #endif
+  mi_assert_internal(page->capacity + extend <= page->reserved);
+  mi_assert_internal(bsize == mi_page_block_size(page));
+  void* const page_area = _mi_page_start(_mi_page_segment(page), page, NULL );
+
+  mi_block_t* const start = mi_page_block_at(page, page_area, bsize, page->capacity);
+
+  // initialize a sequential free list
+  mi_block_t* const last = mi_page_block_at(page, page_area, bsize, page->capacity + extend - 1);
+  mi_block_t* block = start;
+  while(block <= last) {
+    mi_block_t* next = (mi_block_t*)((uint8_t*)block + bsize);
+    mi_block_set_next(page,block,next);
+    block = next;
+  }
+  // prepend to free list (usually `NULL`)
+  mi_block_set_next(page, last, page->free);
+  page->free = start;
+}
+
+/* -----------------------------------------------------------
+  Page initialize and extend the capacity
+----------------------------------------------------------- */
+
+#define MI_MAX_EXTEND_SIZE    (4*1024)      // heuristic, one OS page seems to work well.
+#if (MI_SECURE>0)
+#define MI_MIN_EXTEND         (8*MI_SECURE) // extend at least by this many
+#else
+#define MI_MIN_EXTEND         (4)
+#endif
+
+// Extend the capacity (up to reserved) by initializing a free list
+// We do at most `MI_MAX_EXTEND` to avoid touching too much memory
+// Note: we also experimented with "bump" allocation on the first
+// allocations but this did not speed up any benchmark (due to an
+// extra test in malloc? or cache effects?)
+static void mi_page_extend_free(mi_heap_t* heap, mi_page_t* page, mi_tld_t* tld) {
+  MI_UNUSED(tld);
+  mi_assert_expensive(mi_page_is_valid_init(page));
+  #if (MI_SECURE<=2)
+  mi_assert(page->free == NULL);
+  mi_assert(page->local_free == NULL);
+  if (page->free != NULL) return;
+  #endif
+  if (page->capacity >= page->reserved) return;
+
+  size_t page_size;
+  _mi_page_start(_mi_page_segment(page), page, &page_size);
+  mi_stat_counter_increase(tld->stats.pages_extended, 1);
+
+  // calculate the extend count
+  const size_t bsize = (page->xblock_size < MI_HUGE_BLOCK_SIZE ? page->xblock_size : page_size);
+  size_t extend = page->reserved - page->capacity;
+  mi_assert_internal(extend > 0);
+
+  size_t max_extend = (bsize >= MI_MAX_EXTEND_SIZE ? MI_MIN_EXTEND : MI_MAX_EXTEND_SIZE/(uint32_t)bsize);
+  if (max_extend < MI_MIN_EXTEND) { max_extend = MI_MIN_EXTEND; }
+  mi_assert_internal(max_extend > 0);
+
+  if (extend > max_extend) {
+    // ensure we don't touch memory beyond the page to reduce page commit.
+    // the `lean` benchmark tests this. Going from 1 to 8 increases rss by 50%.
+    extend = max_extend;
+  }
+
+  mi_assert_internal(extend > 0 && extend + page->capacity <= page->reserved);
+  mi_assert_internal(extend < (1UL<<16));
+
+  // and append the extend the free list
+  if (extend < MI_MIN_SLICES || MI_SECURE==0) { //!mi_option_is_enabled(mi_option_secure)) {
+    mi_page_free_list_extend(page, bsize, extend, &tld->stats );
+  }
+  else {
+    mi_page_free_list_extend_secure(heap, page, bsize, extend, &tld->stats);
+  }
+  // enable the new free list
+  page->capacity += (uint16_t)extend;
+  mi_stat_increase(tld->stats.page_committed, extend * bsize);
+  mi_assert_expensive(mi_page_is_valid_init(page));
+}
+
+// Initialize a fresh page
+static void mi_page_init(mi_heap_t* heap, mi_page_t* page, size_t block_size, mi_tld_t* tld) {
+  mi_assert(page != NULL);
+  mi_segment_t* segment = _mi_page_segment(page);
+  mi_assert(segment != NULL);
+  mi_assert_internal(block_size > 0);
+  // set fields
+  mi_page_set_heap(page, heap);
+  page->xblock_size = (block_size < MI_HUGE_BLOCK_SIZE ? (uint32_t)block_size : MI_HUGE_BLOCK_SIZE); // initialize before _mi_segment_page_start
+  size_t page_size;
+  const void* page_start = _mi_segment_page_start(segment, page, &page_size);
+  MI_UNUSED(page_start);
+  mi_track_mem_noaccess(page_start,page_size);
+  mi_assert_internal(mi_page_block_size(page) <= page_size);
+  mi_assert_internal(page_size <= page->slice_count*MI_SEGMENT_SLICE_SIZE);
+  mi_assert_internal(page_size / block_size < (1L<<16));
+  page->reserved = (uint16_t)(page_size / block_size);
+  mi_assert_internal(page->reserved > 0);
+  #if (MI_PADDING || MI_ENCODE_FREELIST)
+  page->keys[0] = _mi_heap_random_next(heap);
+  page->keys[1] = _mi_heap_random_next(heap);
+  #endif
+  page->free_is_zero = page->is_zero_init;
+  #if MI_DEBUG>2
+  if (page->is_zero_init) {
+    mi_track_mem_defined(page_start, page_size);
+    mi_assert_expensive(mi_mem_is_zero(page_start, page_size));
+  }
+  #endif
+
+  mi_assert_internal(page->is_committed);
+  mi_assert_internal(page->capacity == 0);
+  mi_assert_internal(page->free == NULL);
+  mi_assert_internal(page->used == 0);
+  mi_assert_internal(page->xthread_free == 0);
+  mi_assert_internal(page->next == NULL);
+  mi_assert_internal(page->prev == NULL);
+  mi_assert_internal(page->retire_expire == 0);
+  mi_assert_internal(!mi_page_has_aligned(page));
+  #if (MI_PADDING || MI_ENCODE_FREELIST)
+  mi_assert_internal(page->keys[0] != 0);
+  mi_assert_internal(page->keys[1] != 0);
+  #endif
+  mi_assert_expensive(mi_page_is_valid_init(page));
+
+  // initialize an initial free list
+  mi_page_extend_free(heap,page,tld);
+  mi_assert(mi_page_immediate_available(page));
+}
+
+
+/* -----------------------------------------------------------
+  Find pages with free blocks
+-------------------------------------------------------------*/
+
+// Find a page with free blocks of `page->block_size`.
+static mi_page_t* mi_page_queue_find_free_ex(mi_heap_t* heap, mi_page_queue_t* pq, bool first_try)
+{
+  // search through the pages in "next fit" order
+  #if MI_STAT
+  size_t count = 0;
+  #endif
+  mi_page_t* page = pq->first;
+  while (page != NULL)
+  {
+    mi_page_t* next = page->next; // remember next
+    #if MI_STAT
+    count++;
+    #endif
+
+    // 0. collect freed blocks by us and other threads
+    _mi_page_free_collect(page, false);
+
+    // 1. if the page contains free blocks, we are done
+    if (mi_page_immediate_available(page)) {
+      break;  // pick this one
+    }
+
+    // 2. Try to extend
+    if (page->capacity < page->reserved) {
+      mi_page_extend_free(heap, page, heap->tld);
+      mi_assert_internal(mi_page_immediate_available(page));
+      break;
+    }
+
+    // 3. If the page is completely full, move it to the `mi_pages_full`
+    // queue so we don't visit long-lived pages too often.
+    mi_assert_internal(!mi_page_is_in_full(page) && !mi_page_immediate_available(page));
+    mi_page_to_full(page, pq);
+
+    page = next;
+  } // for each page
+
+  mi_heap_stat_counter_increase(heap, searches, count);
+
+  if (page == NULL) {
+    _mi_heap_collect_retired(heap, false); // perhaps make a page available?
+    page = mi_page_fresh(heap, pq);
+    if (page == NULL && first_try) {
+      // out-of-memory _or_ an abandoned page with free blocks was reclaimed, try once again
+      page = mi_page_queue_find_free_ex(heap, pq, false);
+    }
+  }
+  else {
+    mi_assert(pq->first == page);
+    page->retire_expire = 0;
+  }
+  mi_assert_internal(page == NULL || mi_page_immediate_available(page));
+  return page;
+}
+
+
+
+// Find a page with free blocks of `size`.
+static inline mi_page_t* mi_find_free_page(mi_heap_t* heap, size_t size) {
+  mi_page_queue_t* pq = mi_page_queue(heap,size);
+  mi_page_t* page = pq->first;
+  if (page != NULL) {
+   #if (MI_SECURE>=3) // in secure mode, we extend half the time to increase randomness
+    if (page->capacity < page->reserved && ((_mi_heap_random_next(heap) & 1) == 1)) {
+      mi_page_extend_free(heap, page, heap->tld);
+      mi_assert_internal(mi_page_immediate_available(page));
+    }
+    else
+   #endif
+    {
+      _mi_page_free_collect(page,false);
+    }
+
+    if (mi_page_immediate_available(page)) {
+      page->retire_expire = 0;
+      return page; // fast path
+    }
+  }
+  return mi_page_queue_find_free_ex(heap, pq, true);
+}
+
+
+/* -----------------------------------------------------------
+  Users can register a deferred free function called
+  when the `free` list is empty. Since the `local_free`
+  is separate this is deterministically called after
+  a certain number of allocations.
+----------------------------------------------------------- */
+
+static mi_deferred_free_fun* volatile deferred_free = NULL;
+static _Atomic(void*) deferred_arg; // = NULL
+
+void _mi_deferred_free(mi_heap_t* heap, bool force) {
+  heap->tld->heartbeat++;
+  if (deferred_free != NULL && !heap->tld->recurse) {
+    heap->tld->recurse = true;
+    deferred_free(force, heap->tld->heartbeat, mi_atomic_load_ptr_relaxed(void,&deferred_arg));
+    heap->tld->recurse = false;
+  }
+}
+
+void mi_register_deferred_free(mi_deferred_free_fun* fn, void* arg) mi_attr_noexcept {
+  deferred_free = fn;
+  mi_atomic_store_ptr_release(void,&deferred_arg, arg);
+}
+
+
+/* -----------------------------------------------------------
+  General allocation
+----------------------------------------------------------- */
+
+// Large and huge page allocation.
+// Huge pages are allocated directly without being in a queue.
+// Because huge pages contain just one block, and the segment contains
+// just that page, we always treat them as abandoned and any thread
+// that frees the block can free the whole page and segment directly.
+// Huge pages are also use if the requested alignment is very large (> MI_ALIGNMENT_MAX).
+static mi_page_t* mi_large_huge_page_alloc(mi_heap_t* heap, size_t size, size_t page_alignment) {
+  size_t block_size = _mi_os_good_alloc_size(size);
+  mi_assert_internal(mi_bin(block_size) == MI_BIN_HUGE || page_alignment > 0);
+  bool is_huge = (block_size > MI_LARGE_OBJ_SIZE_MAX || page_alignment > 0);
+  #if MI_HUGE_PAGE_ABANDON
+  mi_page_queue_t* pq = (is_huge ? NULL : mi_page_queue(heap, block_size));
+  #else
+  mi_page_queue_t* pq = mi_page_queue(heap, is_huge ? MI_HUGE_BLOCK_SIZE : block_size); // not block_size as that can be low if the page_alignment > 0
+  mi_assert_internal(!is_huge || mi_page_queue_is_huge(pq));
+  #endif
+  mi_page_t* page = mi_page_fresh_alloc(heap, pq, block_size, page_alignment);
+  if (page != NULL) {
+    mi_assert_internal(mi_page_immediate_available(page));
+
+    if (is_huge) {
+      mi_assert_internal(_mi_page_segment(page)->kind == MI_SEGMENT_HUGE);
+      mi_assert_internal(_mi_page_segment(page)->used==1);
+      #if MI_HUGE_PAGE_ABANDON
+      mi_assert_internal(_mi_page_segment(page)->thread_id==0); // abandoned, not in the huge queue
+      mi_page_set_heap(page, NULL);
+      #endif
+    }
+    else {
+      mi_assert_internal(_mi_page_segment(page)->kind != MI_SEGMENT_HUGE);
+    }
+
+    const size_t bsize = mi_page_usable_block_size(page);  // note: not `mi_page_block_size` to account for padding
+    if (bsize <= MI_LARGE_OBJ_SIZE_MAX) {
+      mi_heap_stat_increase(heap, large, bsize);
+      mi_heap_stat_counter_increase(heap, large_count, 1);
+    }
+    else {
+      mi_heap_stat_increase(heap, huge, bsize);
+      mi_heap_stat_counter_increase(heap, huge_count, 1);
+    }
+  }
+  return page;
+}
+
+
+// Allocate a page
+// Note: in debug mode the size includes MI_PADDING_SIZE and might have overflowed.
+static mi_page_t* mi_find_page(mi_heap_t* heap, size_t size, size_t huge_alignment) mi_attr_noexcept {
+  // huge allocation?
+  const size_t req_size = size - MI_PADDING_SIZE;  // correct for padding_size in case of an overflow on `size`
+  if mi_unlikely(req_size > (MI_MEDIUM_OBJ_SIZE_MAX - MI_PADDING_SIZE) || huge_alignment > 0) {
+    if mi_unlikely(req_size > PTRDIFF_MAX) {  // we don't allocate more than PTRDIFF_MAX (see <https://sourceware.org/ml/libc-announce/2019/msg00001.html>)
+      _mi_error_message(EOVERFLOW, "allocation request is too large (%zu bytes)\n", req_size);
+      return NULL;
+    }
+    else {
+      return mi_large_huge_page_alloc(heap,size,huge_alignment);
+    }
+  }
+  else {
+    // otherwise find a page with free blocks in our size segregated queues
+    #if MI_PADDING
+    mi_assert_internal(size >= MI_PADDING_SIZE);
+    #endif
+    return mi_find_free_page(heap, size);
+  }
+}
+
+// Generic allocation routine if the fast path (`alloc.c:mi_page_malloc`) does not succeed.
+// Note: in debug mode the size includes MI_PADDING_SIZE and might have overflowed.
+// The `huge_alignment` is normally 0 but is set to a multiple of MI_SEGMENT_SIZE for
+// very large requested alignments in which case we use a huge segment.
+void* _mi_malloc_generic(mi_heap_t* heap, size_t size, bool zero, size_t huge_alignment) mi_attr_noexcept
+{
+  mi_assert_internal(heap != NULL);
+
+  // initialize if necessary
+  if mi_unlikely(!mi_heap_is_initialized(heap)) {
+    heap = mi_heap_get_default(); // calls mi_thread_init
+    if mi_unlikely(!mi_heap_is_initialized(heap)) { return NULL; }
+  }
+  mi_assert_internal(mi_heap_is_initialized(heap));
+
+  // call potential deferred free routines
+  _mi_deferred_free(heap, false);
+
+  // free delayed frees from other threads (but skip contended ones)
+  _mi_heap_delayed_free_partial(heap);
+
+  // find (or allocate) a page of the right size
+  mi_page_t* page = mi_find_page(heap, size, huge_alignment);
+  if mi_unlikely(page == NULL) { // first time out of memory, try to collect and retry the allocation once more
+    mi_heap_collect(heap, true /* force */);
+    page = mi_find_page(heap, size, huge_alignment);
+  }
+
+  if mi_unlikely(page == NULL) { // out of memory
+    const size_t req_size = size - MI_PADDING_SIZE;  // correct for padding_size in case of an overflow on `size`
+    _mi_error_message(ENOMEM, "unable to allocate memory (%zu bytes)\n", req_size);
+    return NULL;
+  }
+
+  mi_assert_internal(mi_page_immediate_available(page));
+  mi_assert_internal(mi_page_block_size(page) >= size);
+
+  // and try again, this time succeeding! (i.e. this should never recurse through _mi_page_malloc)
+  if mi_unlikely(zero && page->xblock_size == 0) {
+    // note: we cannot call _mi_page_malloc with zeroing for huge blocks; we zero it afterwards in that case.
+    void* p = _mi_page_malloc(heap, page, size, false);
+    mi_assert_internal(p != NULL);
+    _mi_memzero_aligned(p, mi_page_usable_block_size(page));
+    return p;
+  }
+  else {
+    return _mi_page_malloc(heap, page, size, zero);
+  }
+}
diff --git a/Objects/mimalloc/prim/osx/alloc-override-zone.c b/Objects/mimalloc/prim/osx/alloc-override-zone.c
new file mode 100644
index 00000000000000..0e0a99d9388c8a
--- /dev/null
+++ b/Objects/mimalloc/prim/osx/alloc-override-zone.c
@@ -0,0 +1,458 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+
+#if defined(MI_MALLOC_OVERRIDE)
+
+#if !defined(__APPLE__)
+#error "this file should only be included on macOS"
+#endif
+
+/* ------------------------------------------------------
+   Override system malloc on macOS
+   This is done through the malloc zone interface.
+   It seems to be most robust in combination with interposing
+   though or otherwise we may get zone errors as there are could
+   be allocations done by the time we take over the
+   zone.
+------------------------------------------------------ */
+
+#include <AvailabilityMacros.h>
+#include <malloc/malloc.h>
+#include <string.h>  // memset
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6)
+// only available from OSX 10.6
+extern malloc_zone_t* malloc_default_purgeable_zone(void) __attribute__((weak_import));
+#endif
+
+/* ------------------------------------------------------
+   malloc zone members
+------------------------------------------------------ */
+
+static size_t zone_size(malloc_zone_t* zone, const void* p) {
+  MI_UNUSED(zone);
+  if (!mi_is_in_heap_region(p)){ return 0; } // not our pointer, bail out
+  return mi_usable_size(p);
+}
+
+static void* zone_malloc(malloc_zone_t* zone, size_t size) {
+  MI_UNUSED(zone);
+  return mi_malloc(size);
+}
+
+static void* zone_calloc(malloc_zone_t* zone, size_t count, size_t size) {
+  MI_UNUSED(zone);
+  return mi_calloc(count, size);
+}
+
+static void* zone_valloc(malloc_zone_t* zone, size_t size) {
+  MI_UNUSED(zone);
+  return mi_malloc_aligned(size, _mi_os_page_size());
+}
+
+static void zone_free(malloc_zone_t* zone, void* p) {
+  MI_UNUSED(zone);
+  mi_cfree(p);
+}
+
+static void* zone_realloc(malloc_zone_t* zone, void* p, size_t newsize) {
+  MI_UNUSED(zone);
+  return mi_realloc(p, newsize);
+}
+
+static void* zone_memalign(malloc_zone_t* zone, size_t alignment, size_t size) {
+  MI_UNUSED(zone);
+  return mi_malloc_aligned(size,alignment);
+}
+
+static void zone_destroy(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  // todo: ignore for now?
+}
+
+static unsigned zone_batch_malloc(malloc_zone_t* zone, size_t size, void** ps, unsigned count) {
+  size_t i;
+  for (i = 0; i < count; i++) {
+    ps[i] = zone_malloc(zone, size);
+    if (ps[i] == NULL) break;
+  }
+  return i;
+}
+
+static void zone_batch_free(malloc_zone_t* zone, void** ps, unsigned count) {
+  for(size_t i = 0; i < count; i++) {
+    zone_free(zone, ps[i]);
+    ps[i] = NULL;
+  }
+}
+
+static size_t zone_pressure_relief(malloc_zone_t* zone, size_t size) {
+  MI_UNUSED(zone); MI_UNUSED(size);
+  mi_collect(false);
+  return 0;
+}
+
+static void zone_free_definite_size(malloc_zone_t* zone, void* p, size_t size) {
+  MI_UNUSED(size);
+  zone_free(zone,p);
+}
+
+static boolean_t zone_claimed_address(malloc_zone_t* zone, void* p) {
+  MI_UNUSED(zone);
+  return mi_is_in_heap_region(p);
+}
+
+
+/* ------------------------------------------------------
+   Introspection members
+------------------------------------------------------ */
+
+static kern_return_t intro_enumerator(task_t task, void* p,
+                            unsigned type_mask, vm_address_t zone_address,
+                            memory_reader_t reader,
+                            vm_range_recorder_t recorder)
+{
+  // todo: enumerate all memory
+  MI_UNUSED(task); MI_UNUSED(p); MI_UNUSED(type_mask); MI_UNUSED(zone_address);
+  MI_UNUSED(reader); MI_UNUSED(recorder);
+  return KERN_SUCCESS;
+}
+
+static size_t intro_good_size(malloc_zone_t* zone, size_t size) {
+  MI_UNUSED(zone);
+  return mi_good_size(size);
+}
+
+static boolean_t intro_check(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  return true;
+}
+
+static void intro_print(malloc_zone_t* zone, boolean_t verbose) {
+  MI_UNUSED(zone); MI_UNUSED(verbose);
+  mi_stats_print(NULL);
+}
+
+static void intro_log(malloc_zone_t* zone, void* p) {
+  MI_UNUSED(zone); MI_UNUSED(p);
+  // todo?
+}
+
+static void intro_force_lock(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  // todo?
+}
+
+static void intro_force_unlock(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  // todo?
+}
+
+static void intro_statistics(malloc_zone_t* zone, malloc_statistics_t* stats) {
+  MI_UNUSED(zone);
+  // todo...
+  stats->blocks_in_use = 0;
+  stats->size_in_use = 0;
+  stats->max_size_in_use = 0;
+  stats->size_allocated = 0;
+}
+
+static boolean_t intro_zone_locked(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  return false;
+}
+
+
+/* ------------------------------------------------------
+  At process start, override the default allocator
+------------------------------------------------------ */
+
+#if defined(__GNUC__) && !defined(__clang__)
+#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+#if defined(__clang__)
+#pragma clang diagnostic ignored "-Wc99-extensions"
+#endif
+
+static malloc_introspection_t mi_introspect = {
+  .enumerator = &intro_enumerator,
+  .good_size = &intro_good_size,
+  .check = &intro_check,
+  .print = &intro_print,
+  .log = &intro_log,
+  .force_lock = &intro_force_lock,
+  .force_unlock = &intro_force_unlock,
+#if defined(MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6) && !defined(__ppc__)
+  .statistics = &intro_statistics,
+  .zone_locked = &intro_zone_locked,
+#endif
+};
+
+static malloc_zone_t mi_malloc_zone = {
+  // note: even with designators, the order is important for C++ compilation
+  //.reserved1 = NULL,
+  //.reserved2 = NULL,
+  .size = &zone_size,
+  .malloc = &zone_malloc,
+  .calloc = &zone_calloc,
+  .valloc = &zone_valloc,
+  .free = &zone_free,
+  .realloc = &zone_realloc,
+  .destroy = &zone_destroy,
+  .zone_name = "mimalloc",
+  .batch_malloc = &zone_batch_malloc,
+  .batch_free = &zone_batch_free,
+  .introspect = &mi_introspect,
+#if defined(MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6) && !defined(__ppc__)
+  #if defined(MAC_OS_X_VERSION_10_14) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_14)
+  .version = 10,
+  #else
+  .version = 9,
+  #endif
+  // switch to version 9+ on OSX 10.6 to support memalign.
+  .memalign = &zone_memalign,
+  .free_definite_size = &zone_free_definite_size,
+  .pressure_relief = &zone_pressure_relief,
+  #if defined(MAC_OS_X_VERSION_10_14) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_14)
+  .claimed_address = &zone_claimed_address,
+  #endif
+#else
+  .version = 4,
+#endif
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#if defined(MI_OSX_INTERPOSE) && defined(MI_SHARED_LIB_EXPORT)
+
+// ------------------------------------------------------
+// Override malloc_xxx and malloc_zone_xxx api's to use only
+// our mimalloc zone. Since even the loader uses malloc
+// on macOS, this ensures that all allocations go through
+// mimalloc (as all calls are interposed).
+// The main `malloc`, `free`, etc calls are interposed in `alloc-override.c`,
+// Here, we also override macOS specific API's like
+// `malloc_zone_calloc` etc. see <https://github.com/aosm/libmalloc/blob/master/man/malloc_zone_malloc.3>
+// ------------------------------------------------------
+
+static inline malloc_zone_t* mi_get_default_zone(void)
+{
+  static bool init;
+  if mi_unlikely(!init) {
+    init = true;
+    malloc_zone_register(&mi_malloc_zone);  // by calling register we avoid a zone error on free (see <http://eatmyrandom.blogspot.com/2010/03/mallocfree-interception-on-mac-os-x.html>)
+  }
+  return &mi_malloc_zone;
+}
+
+mi_decl_externc int  malloc_jumpstart(uintptr_t cookie);
+mi_decl_externc void _malloc_fork_prepare(void);
+mi_decl_externc void _malloc_fork_parent(void);
+mi_decl_externc void _malloc_fork_child(void);
+
+
+static malloc_zone_t* mi_malloc_create_zone(vm_size_t size, unsigned flags) {
+  MI_UNUSED(size); MI_UNUSED(flags);
+  return mi_get_default_zone();
+}
+
+static malloc_zone_t* mi_malloc_default_zone (void) {
+  return mi_get_default_zone();
+}
+
+static malloc_zone_t* mi_malloc_default_purgeable_zone(void) {
+  return mi_get_default_zone();
+}
+
+static void mi_malloc_destroy_zone(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  // nothing.
+}
+
+static kern_return_t mi_malloc_get_all_zones (task_t task, memory_reader_t mr, vm_address_t** addresses, unsigned* count) {
+  MI_UNUSED(task); MI_UNUSED(mr);
+  if (addresses != NULL) *addresses = NULL;
+  if (count != NULL) *count = 0;
+  return KERN_SUCCESS;
+}
+
+static const char* mi_malloc_get_zone_name(malloc_zone_t* zone) {
+  return (zone == NULL ? mi_malloc_zone.zone_name : zone->zone_name);
+}
+
+static void mi_malloc_set_zone_name(malloc_zone_t* zone, const char* name) {
+  MI_UNUSED(zone); MI_UNUSED(name);
+}
+
+static int mi_malloc_jumpstart(uintptr_t cookie) {
+  MI_UNUSED(cookie);
+  return 1; // or 0 for no error?
+}
+
+static void mi__malloc_fork_prepare(void) {
+  // nothing
+}
+static void mi__malloc_fork_parent(void) {
+  // nothing
+}
+static void mi__malloc_fork_child(void) {
+  // nothing
+}
+
+static void mi_malloc_printf(const char* fmt, ...) {
+  MI_UNUSED(fmt);
+}
+
+static bool zone_check(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+  return true;
+}
+
+static malloc_zone_t* zone_from_ptr(const void* p) {
+  MI_UNUSED(p);
+  return mi_get_default_zone();
+}
+
+static void zone_log(malloc_zone_t* zone, void* p) {
+  MI_UNUSED(zone); MI_UNUSED(p);
+}
+
+static void zone_print(malloc_zone_t* zone, bool b) {
+  MI_UNUSED(zone); MI_UNUSED(b);
+}
+
+static void zone_print_ptr_info(void* p) {
+  MI_UNUSED(p);
+}
+
+static void zone_register(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+}
+
+static void zone_unregister(malloc_zone_t* zone) {
+  MI_UNUSED(zone);
+}
+
+// use interposing so `DYLD_INSERT_LIBRARIES` works without `DYLD_FORCE_FLAT_NAMESPACE=1`
+// See: <https://books.google.com/books?id=K8vUkpOXhN4C&pg=PA73>
+struct mi_interpose_s {
+  const void* replacement;
+  const void* target;
+};
+#define MI_INTERPOSE_FUN(oldfun,newfun) { (const void*)&newfun, (const void*)&oldfun }
+#define MI_INTERPOSE_MI(fun)            MI_INTERPOSE_FUN(fun,mi_##fun)
+#define MI_INTERPOSE_ZONE(fun)          MI_INTERPOSE_FUN(malloc_##fun,fun)
+__attribute__((used)) static const struct mi_interpose_s _mi_zone_interposes[]  __attribute__((section("__DATA, __interpose"))) =
+{
+
+  MI_INTERPOSE_MI(malloc_create_zone),
+  MI_INTERPOSE_MI(malloc_default_purgeable_zone),
+  MI_INTERPOSE_MI(malloc_default_zone),
+  MI_INTERPOSE_MI(malloc_destroy_zone),
+  MI_INTERPOSE_MI(malloc_get_all_zones),
+  MI_INTERPOSE_MI(malloc_get_zone_name),
+  MI_INTERPOSE_MI(malloc_jumpstart),
+  MI_INTERPOSE_MI(malloc_printf),
+  MI_INTERPOSE_MI(malloc_set_zone_name),
+  MI_INTERPOSE_MI(_malloc_fork_child),
+  MI_INTERPOSE_MI(_malloc_fork_parent),
+  MI_INTERPOSE_MI(_malloc_fork_prepare),
+
+  MI_INTERPOSE_ZONE(zone_batch_free),
+  MI_INTERPOSE_ZONE(zone_batch_malloc),
+  MI_INTERPOSE_ZONE(zone_calloc),
+  MI_INTERPOSE_ZONE(zone_check),
+  MI_INTERPOSE_ZONE(zone_free),
+  MI_INTERPOSE_ZONE(zone_from_ptr),
+  MI_INTERPOSE_ZONE(zone_log),
+  MI_INTERPOSE_ZONE(zone_malloc),
+  MI_INTERPOSE_ZONE(zone_memalign),
+  MI_INTERPOSE_ZONE(zone_print),
+  MI_INTERPOSE_ZONE(zone_print_ptr_info),
+  MI_INTERPOSE_ZONE(zone_realloc),
+  MI_INTERPOSE_ZONE(zone_register),
+  MI_INTERPOSE_ZONE(zone_unregister),
+  MI_INTERPOSE_ZONE(zone_valloc)
+};
+
+
+#else
+
+// ------------------------------------------------------
+// hook into the zone api's without interposing
+// This is the official way of adding an allocator but
+// it seems less robust than using interpose.
+// ------------------------------------------------------
+
+static inline malloc_zone_t* mi_get_default_zone(void)
+{
+  // The first returned zone is the real default
+  malloc_zone_t** zones = NULL;
+  unsigned count = 0;
+  kern_return_t ret = malloc_get_all_zones(0, NULL, (vm_address_t**)&zones, &count);
+  if (ret == KERN_SUCCESS && count > 0) {
+    return zones[0];
+  }
+  else {
+    // fallback
+    return malloc_default_zone();
+  }
+}
+
+#if defined(__clang__)
+__attribute__((constructor(0)))
+#else
+__attribute__((constructor))      // seems not supported by g++-11 on the M1
+#endif
+static void _mi_macos_override_malloc(void) {
+  malloc_zone_t* purgeable_zone = NULL;
+
+  #if defined(MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6)
+  // force the purgeable zone to exist to avoid strange bugs
+  if (malloc_default_purgeable_zone) {
+    purgeable_zone = malloc_default_purgeable_zone();
+  }
+  #endif
+
+  // Register our zone.
+  // thomcc: I think this is still needed to put us in the zone list.
+  malloc_zone_register(&mi_malloc_zone);
+  // Unregister the default zone, this makes our zone the new default
+  // as that was the last registered.
+  malloc_zone_t *default_zone = mi_get_default_zone();
+  // thomcc: Unsure if the next test is *always* false or just false in the
+  // cases I've tried. I'm also unsure if the code inside is needed. at all
+  if (default_zone != &mi_malloc_zone) {
+    malloc_zone_unregister(default_zone);
+
+    // Reregister the default zone so free and realloc in that zone keep working.
+    malloc_zone_register(default_zone);
+  }
+
+  // Unregister, and re-register the purgeable_zone to avoid bugs if it occurs
+  // earlier than the default zone.
+  if (purgeable_zone != NULL) {
+    malloc_zone_unregister(purgeable_zone);
+    malloc_zone_register(purgeable_zone);
+  }
+
+}
+#endif  // MI_OSX_INTERPOSE
+
+#endif // MI_MALLOC_OVERRIDE
diff --git a/Objects/mimalloc/prim/osx/prim.c b/Objects/mimalloc/prim/osx/prim.c
new file mode 100644
index 00000000000000..8a2f4e8aa47316
--- /dev/null
+++ b/Objects/mimalloc/prim/osx/prim.c
@@ -0,0 +1,9 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// We use the unix/prim.c with the mmap API on macOSX
+#include "../unix/prim.c"
diff --git a/Objects/mimalloc/prim/prim.c b/Objects/mimalloc/prim/prim.c
new file mode 100644
index 00000000000000..9a597d8eb603e9
--- /dev/null
+++ b/Objects/mimalloc/prim/prim.c
@@ -0,0 +1,24 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// Select the implementation of the primitives
+// depending on the OS.
+
+#if defined(_WIN32)
+#include "windows/prim.c"  // VirtualAlloc (Windows)
+
+#elif defined(__APPLE__)
+#include "osx/prim.c"      // macOSX (actually defers to mmap in unix/prim.c)
+
+#elif defined(__wasi__)
+#define MI_USE_SBRK
+#include "wasi/prim.c"     // memory-grow or sbrk (Wasm)
+
+#else
+#include "unix/prim.c"     // mmap() (Linux, macOSX, BSD, Illumnos, Haiku, DragonFly, etc.)
+
+#endif
diff --git a/Objects/mimalloc/prim/readme.md b/Objects/mimalloc/prim/readme.md
new file mode 100644
index 00000000000000..380dd3a7178419
--- /dev/null
+++ b/Objects/mimalloc/prim/readme.md
@@ -0,0 +1,9 @@
+## Portability Primitives
+
+This is the portability layer where all primitives needed from the OS are defined.
+
+- `include/mimalloc/prim.h`: primitive portability API definition.
+- `prim.c`: Selects one of `unix/prim.c`, `wasi/prim.c`, or `windows/prim.c` depending on the host platform
+            (and on macOS, `osx/prim.c` defers to `unix/prim.c`).
+
+Note: still work in progress, there may still be places in the sources that still depend on OS ifdef's.
\ No newline at end of file
diff --git a/Objects/mimalloc/prim/unix/prim.c b/Objects/mimalloc/prim/unix/prim.c
new file mode 100644
index 00000000000000..cffbb2d0b4d7b2
--- /dev/null
+++ b/Objects/mimalloc/prim/unix/prim.c
@@ -0,0 +1,859 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// This file is included in `src/prim/prim.c`
+
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE   // ensure mmap flags and syscall are defined
+#endif
+
+#if defined(__sun)
+// illumos provides new mman.h api when any of these are defined
+// otherwise the old api based on caddr_t which predates the void pointers one.
+// stock solaris provides only the former, chose to atomically to discard those
+// flags only here rather than project wide tough.
+#undef _XOPEN_SOURCE
+#undef _POSIX_C_SOURCE
+#endif
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"
+
+#include <sys/mman.h>  // mmap
+#include <unistd.h>    // sysconf
+
+#if defined(__linux__)
+  #include <features.h>
+  #include <fcntl.h>
+  #if defined(__GLIBC__)
+  #include <linux/mman.h> // linux mmap flags
+  #else
+  #include <sys/mman.h>
+  #endif
+#elif defined(__APPLE__)
+  #include <TargetConditionals.h>
+  #if !TARGET_IOS_IPHONE && !TARGET_IOS_SIMULATOR
+  #include <mach/vm_statistics.h>
+  #endif
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+  #include <sys/param.h>
+  #if __FreeBSD_version >= 1200000
+  #include <sys/cpuset.h>
+  #include <sys/domainset.h>
+  #endif
+  #include <sys/sysctl.h>
+#endif
+
+#if !defined(__HAIKU__) && !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(_AIX) && !defined(__FreeBSD__)
+  #define MI_HAS_SYSCALL_H
+  #include <sys/syscall.h>
+#endif
+
+//------------------------------------------------------------------------------------
+// Use syscalls for some primitives to allow for libraries that override open/read/close etc.
+// and do allocation themselves; using syscalls prevents recursion when mimalloc is
+// still initializing (issue #713)
+//------------------------------------------------------------------------------------
+
+#if defined(MI_HAS_SYSCALL_H) && defined(SYS_open) && defined(SYS_close) && defined(SYS_read) && defined(SYS_access)
+
+static int mi_prim_open(const char* fpath, int open_flags) {
+  return syscall(SYS_open,fpath,open_flags,0);
+}
+static ssize_t mi_prim_read(int fd, void* buf, size_t bufsize) {
+  return syscall(SYS_read,fd,buf,bufsize);
+}
+static int mi_prim_close(int fd) {
+  return syscall(SYS_close,fd);
+}
+static int mi_prim_access(const char *fpath, int mode) {
+  return syscall(SYS_access,fpath,mode);
+}
+
+#elif !defined(__APPLE__) && !defined(_AIX) && !defined(__FreeBSD__) // avoid unused warnings
+
+static int mi_prim_open(const char* fpath, int open_flags) {
+  return open(fpath,open_flags);
+}
+static ssize_t mi_prim_read(int fd, void* buf, size_t bufsize) {
+  return read(fd,buf,bufsize);
+}
+static int mi_prim_close(int fd) {
+  return close(fd);
+}
+static int mi_prim_access(const char *fpath, int mode) {
+  return access(fpath,mode);
+}
+
+#endif
+
+
+
+//---------------------------------------------
+// init
+//---------------------------------------------
+
+static bool unix_detect_overcommit(void) {
+  bool os_overcommit = true;
+#if defined(__linux__)
+  int fd = mi_prim_open("/proc/sys/vm/overcommit_memory", O_RDONLY);
+        if (fd >= 0) {
+    char buf[32] = {0};
+    ssize_t nread = mi_prim_read(fd, &buf, sizeof(buf));
+    mi_prim_close(fd);
+    // <https://www.kernel.org/doc/Documentation/vm/overcommit-accounting>
+    // 0: heuristic overcommit, 1: always overcommit, 2: never overcommit (ignore NORESERVE)
+    if (nread >= 1) {
+      os_overcommit = (buf[0] == '0' || buf[0] == '1');
+    }
+  }
+#elif defined(__FreeBSD__)
+  int val = 0;
+  size_t olen = sizeof(val);
+  if (sysctlbyname("vm.overcommit", &val, &olen, NULL, 0) == 0) {
+    os_overcommit = (val != 0);
+  }
+#else
+  // default: overcommit is true
+#endif
+  return os_overcommit;
+}
+
+void _mi_prim_mem_init( mi_os_mem_config_t* config ) {
+  long psize = sysconf(_SC_PAGESIZE);
+  if (psize > 0) {
+    config->page_size = (size_t)psize;
+    config->alloc_granularity = (size_t)psize;
+  }
+  config->large_page_size = 2*MI_MiB; // TODO: can we query the OS for this?
+  config->has_overcommit = unix_detect_overcommit();
+  config->must_free_whole = false;    // mmap can free in parts
+  config->has_virtual_reserve = true; // todo: check if this true for NetBSD?  (for anonymous mmap with PROT_NONE)
+}
+
+
+//---------------------------------------------
+// free
+//---------------------------------------------
+
+int _mi_prim_free(void* addr, size_t size ) {
+  bool err = (munmap(addr, size) == -1);
+  return (err ? errno : 0);
+}
+
+
+//---------------------------------------------
+// mmap
+//---------------------------------------------
+
+static int unix_madvise(void* addr, size_t size, int advice) {
+  #if defined(__sun)
+  return madvise((caddr_t)addr, size, advice);  // Solaris needs cast (issue #520)
+  #else
+  return madvise(addr, size, advice);
+  #endif
+}
+
+static void* unix_mmap_prim(void* addr, size_t size, size_t try_alignment, int protect_flags, int flags, int fd) {
+  MI_UNUSED(try_alignment);
+  void* p = NULL;
+  #if defined(MAP_ALIGNED)  // BSD
+  if (addr == NULL && try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0) {
+    size_t n = mi_bsr(try_alignment);
+    if (((size_t)1 << n) == try_alignment && n >= 12 && n <= 30) {  // alignment is a power of 2 and 4096 <= alignment <= 1GiB
+      p = mmap(addr, size, protect_flags, flags | MAP_ALIGNED(n), fd, 0);
+      if (p==MAP_FAILED || !_mi_is_aligned(p,try_alignment)) {
+        int err = errno;
+        _mi_warning_message("unable to directly request aligned OS memory (error: %d (0x%x), size: 0x%zx bytes, alignment: 0x%zx, hint address: %p)\n", err, err, size, try_alignment, addr);
+      }
+      if (p!=MAP_FAILED) return p;
+      // fall back to regular mmap
+    }
+  }
+  #elif defined(MAP_ALIGN)  // Solaris
+  if (addr == NULL && try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0) {
+    p = mmap((void*)try_alignment, size, protect_flags, flags | MAP_ALIGN, fd, 0);  // addr parameter is the required alignment
+    if (p!=MAP_FAILED) return p;
+    // fall back to regular mmap
+  }
+  #endif
+  #if (MI_INTPTR_SIZE >= 8) && !defined(MAP_ALIGNED)
+  // on 64-bit systems, use the virtual address area after 2TiB for 4MiB aligned allocations
+  if (addr == NULL) {
+    void* hint = _mi_os_get_aligned_hint(try_alignment, size);
+    if (hint != NULL) {
+      p = mmap(hint, size, protect_flags, flags, fd, 0);
+      if (p==MAP_FAILED || !_mi_is_aligned(p,try_alignment)) {
+        #if MI_TRACK_ENABLED  // asan sometimes does not instrument errno correctly?
+        int err = 0;
+        #else
+        int err = errno;
+        #endif
+        _mi_warning_message("unable to directly request hinted aligned OS memory (error: %d (0x%x), size: 0x%zx bytes, alignment: 0x%zx, hint address: %p)\n", err, err, size, try_alignment, hint);
+      }
+      if (p!=MAP_FAILED) return p;
+      // fall back to regular mmap
+    }
+  }
+  #endif
+  // regular mmap
+  p = mmap(addr, size, protect_flags, flags, fd, 0);
+  if (p!=MAP_FAILED) return p;
+  // failed to allocate
+  return NULL;
+}
+
+static int unix_mmap_fd(void) {
+  #if defined(VM_MAKE_TAG)
+  // macOS: tracking anonymous page with a specific ID. (All up to 98 are taken officially but LLVM sanitizers had taken 99)
+  int os_tag = (int)mi_option_get(mi_option_os_tag);
+  if (os_tag < 100 || os_tag > 255) { os_tag = 100; }
+  return VM_MAKE_TAG(os_tag);
+  #else
+  return -1;
+  #endif
+}
+
+static void* unix_mmap(void* addr, size_t size, size_t try_alignment, int protect_flags, bool large_only, bool allow_large, bool* is_large) {
+  #if !defined(MAP_ANONYMOUS)
+  #define MAP_ANONYMOUS  MAP_ANON
+  #endif
+  #if !defined(MAP_NORESERVE)
+  #define MAP_NORESERVE  0
+  #endif
+  void* p = NULL;
+  const int fd = unix_mmap_fd();
+  int flags = MAP_PRIVATE | MAP_ANONYMOUS;
+  if (_mi_os_has_overcommit()) {
+    flags |= MAP_NORESERVE;
+  }
+  #if defined(PROT_MAX)
+  protect_flags |= PROT_MAX(PROT_READ | PROT_WRITE); // BSD
+  #endif
+  // huge page allocation
+  if ((large_only || _mi_os_use_large_page(size, try_alignment)) && allow_large) {
+    static _Atomic(size_t) large_page_try_ok; // = 0;
+    size_t try_ok = mi_atomic_load_acquire(&large_page_try_ok);
+    if (!large_only && try_ok > 0) {
+      // If the OS is not configured for large OS pages, or the user does not have
+      // enough permission, the `mmap` will always fail (but it might also fail for other reasons).
+      // Therefore, once a large page allocation failed, we don't try again for `large_page_try_ok` times
+      // to avoid too many failing calls to mmap.
+      mi_atomic_cas_strong_acq_rel(&large_page_try_ok, &try_ok, try_ok - 1);
+    }
+    else {
+      int lflags = flags & ~MAP_NORESERVE;  // using NORESERVE on huge pages seems to fail on Linux
+      int lfd = fd;
+      #ifdef MAP_ALIGNED_SUPER
+      lflags |= MAP_ALIGNED_SUPER;
+      #endif
+      #ifdef MAP_HUGETLB
+      lflags |= MAP_HUGETLB;
+      #endif
+      #ifdef MAP_HUGE_1GB
+      static bool mi_huge_pages_available = true;
+      if ((size % MI_GiB) == 0 && mi_huge_pages_available) {
+        lflags |= MAP_HUGE_1GB;
+      }
+      else
+      #endif
+      {
+        #ifdef MAP_HUGE_2MB
+        lflags |= MAP_HUGE_2MB;
+        #endif
+      }
+      #ifdef VM_FLAGS_SUPERPAGE_SIZE_2MB
+      lfd |= VM_FLAGS_SUPERPAGE_SIZE_2MB;
+      #endif
+      if (large_only || lflags != flags) {
+        // try large OS page allocation
+        *is_large = true;
+        p = unix_mmap_prim(addr, size, try_alignment, protect_flags, lflags, lfd);
+        #ifdef MAP_HUGE_1GB
+        if (p == NULL && (lflags & MAP_HUGE_1GB) != 0) {
+          mi_huge_pages_available = false; // don't try huge 1GiB pages again
+          _mi_warning_message("unable to allocate huge (1GiB) page, trying large (2MiB) pages instead (errno: %i)\n", errno);
+          lflags = ((lflags & ~MAP_HUGE_1GB) | MAP_HUGE_2MB);
+          p = unix_mmap_prim(addr, size, try_alignment, protect_flags, lflags, lfd);
+        }
+        #endif
+        if (large_only) return p;
+        if (p == NULL) {
+          mi_atomic_store_release(&large_page_try_ok, (size_t)8);  // on error, don't try again for the next N allocations
+        }
+      }
+    }
+  }
+  // regular allocation
+  if (p == NULL) {
+    *is_large = false;
+    p = unix_mmap_prim(addr, size, try_alignment, protect_flags, flags, fd);
+    if (p != NULL) {
+      #if defined(MADV_HUGEPAGE)
+      // Many Linux systems don't allow MAP_HUGETLB but they support instead
+      // transparent huge pages (THP). Generally, it is not required to call `madvise` with MADV_HUGE
+      // though since properly aligned allocations will already use large pages if available
+      // in that case -- in particular for our large regions (in `memory.c`).
+      // However, some systems only allow THP if called with explicit `madvise`, so
+      // when large OS pages are enabled for mimalloc, we call `madvise` anyways.
+      if (allow_large && _mi_os_use_large_page(size, try_alignment)) {
+        if (unix_madvise(p, size, MADV_HUGEPAGE) == 0) {
+          *is_large = true; // possibly
+        };
+      }
+      #elif defined(__sun)
+      if (allow_large && _mi_os_use_large_page(size, try_alignment)) {
+        struct memcntl_mha cmd = {0};
+        cmd.mha_pagesize = large_os_page_size;
+        cmd.mha_cmd = MHA_MAPSIZE_VA;
+        if (memcntl((caddr_t)p, size, MC_HAT_ADVISE, (caddr_t)&cmd, 0, 0) == 0) {
+          *is_large = true;
+        }
+      }
+      #endif
+    }
+  }
+  return p;
+}
+
+// Note: the `try_alignment` is just a hint and the returned pointer is not guaranteed to be aligned.
+int _mi_prim_alloc(size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, void** addr) {
+  mi_assert_internal(size > 0 && (size % _mi_os_page_size()) == 0);
+  mi_assert_internal(commit || !allow_large);
+  mi_assert_internal(try_alignment > 0);
+
+  *is_zero = true;
+  int protect_flags = (commit ? (PROT_WRITE | PROT_READ) : PROT_NONE);
+  *addr = unix_mmap(NULL, size, try_alignment, protect_flags, false, allow_large, is_large);
+  return (*addr != NULL ? 0 : errno);
+}
+
+
+//---------------------------------------------
+// Commit/Reset
+//---------------------------------------------
+
+static void unix_mprotect_hint(int err) {
+  #if defined(__linux__) && (MI_SECURE>=2) // guard page around every mimalloc page
+  if (err == ENOMEM) {
+    _mi_warning_message("The next warning may be caused by a low memory map limit.\n"
+                        "  On Linux this is controlled by the vm.max_map_count -- maybe increase it?\n"
+                        "  For example: sudo sysctl -w vm.max_map_count=262144\n");
+  }
+  #else
+  MI_UNUSED(err);
+  #endif
+}
+
+int _mi_prim_commit(void* start, size_t size, bool* is_zero) {
+  // commit: ensure we can access the area
+  // note: we may think that *is_zero can be true since the memory
+  // was either from mmap PROT_NONE, or from decommit MADV_DONTNEED, but
+  // we sometimes call commit on a range with still partially committed
+  // memory and `mprotect` does not zero the range.
+  *is_zero = false;
+  int err = mprotect(start, size, (PROT_READ | PROT_WRITE));
+  if (err != 0) {
+    err = errno;
+    unix_mprotect_hint(err);
+  }
+  return err;
+}
+
+int _mi_prim_decommit(void* start, size_t size, bool* needs_recommit) {
+  int err = 0;
+  // decommit: use MADV_DONTNEED as it decreases rss immediately (unlike MADV_FREE)
+  err = unix_madvise(start, size, MADV_DONTNEED);
+  #if !MI_DEBUG && !MI_SECURE
+    *needs_recommit = false;
+  #else
+    *needs_recommit = true;
+    mprotect(start, size, PROT_NONE);
+  #endif
+  /*
+  // decommit: use mmap with MAP_FIXED and PROT_NONE to discard the existing memory (and reduce rss)
+  *needs_recommit = true;
+  const int fd = unix_mmap_fd();
+  void* p = mmap(start, size, PROT_NONE, (MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE), fd, 0);
+  if (p != start) { err = errno; }
+  */
+  return err;
+}
+
+int _mi_prim_reset(void* start, size_t size) {
+  // We try to use `MADV_FREE` as that is the fastest. A drawback though is that it
+  // will not reduce the `rss` stats in tools like `top` even though the memory is available
+  // to other processes. With the default `MIMALLOC_PURGE_DECOMMITS=1` we ensure that by
+  // default `MADV_DONTNEED` is used though.
+  #if defined(MADV_FREE)
+  static _Atomic(size_t) advice = MI_ATOMIC_VAR_INIT(MADV_FREE);
+  int oadvice = (int)mi_atomic_load_relaxed(&advice);
+  int err;
+  while ((err = unix_madvise(start, size, oadvice)) != 0 && errno == EAGAIN) { errno = 0;  };
+  if (err != 0 && errno == EINVAL && oadvice == MADV_FREE) {
+    // if MADV_FREE is not supported, fall back to MADV_DONTNEED from now on
+    mi_atomic_store_release(&advice, (size_t)MADV_DONTNEED);
+    err = unix_madvise(start, size, MADV_DONTNEED);
+  }
+  #else
+  int err = unix_madvise(start, size, MADV_DONTNEED);
+  #endif
+  return err;
+}
+
+int _mi_prim_protect(void* start, size_t size, bool protect) {
+  int err = mprotect(start, size, protect ? PROT_NONE : (PROT_READ | PROT_WRITE));
+  if (err != 0) { err = errno; }
+  unix_mprotect_hint(err);
+  return err;
+}
+
+
+
+//---------------------------------------------
+// Huge page allocation
+//---------------------------------------------
+
+#if (MI_INTPTR_SIZE >= 8) && !defined(__HAIKU__) && !defined(__CYGWIN__)
+
+#ifndef MPOL_PREFERRED
+#define MPOL_PREFERRED 1
+#endif
+
+#if defined(MI_HAS_SYSCALL_H) && defined(SYS_mbind)
+static long mi_prim_mbind(void* start, unsigned long len, unsigned long mode, const unsigned long* nmask, unsigned long maxnode, unsigned flags) {
+  return syscall(SYS_mbind, start, len, mode, nmask, maxnode, flags);
+}
+#else
+static long mi_prim_mbind(void* start, unsigned long len, unsigned long mode, const unsigned long* nmask, unsigned long maxnode, unsigned flags) {
+  MI_UNUSED(start); MI_UNUSED(len); MI_UNUSED(mode); MI_UNUSED(nmask); MI_UNUSED(maxnode); MI_UNUSED(flags);
+  return 0;
+}
+#endif
+
+int _mi_prim_alloc_huge_os_pages(void* hint_addr, size_t size, int numa_node, bool* is_zero, void** addr) {
+  bool is_large = true;
+  *is_zero = true;
+  *addr = unix_mmap(hint_addr, size, MI_SEGMENT_SIZE, PROT_READ | PROT_WRITE, true, true, &is_large);
+  if (*addr != NULL && numa_node >= 0 && numa_node < 8*MI_INTPTR_SIZE) { // at most 64 nodes
+    unsigned long numa_mask = (1UL << numa_node);
+    // TODO: does `mbind` work correctly for huge OS pages? should we
+    // use `set_mempolicy` before calling mmap instead?
+    // see: <https://lkml.org/lkml/2017/2/9/875>
+    long err = mi_prim_mbind(*addr, size, MPOL_PREFERRED, &numa_mask, 8*MI_INTPTR_SIZE, 0);
+    if (err != 0) {
+      err = errno;
+      _mi_warning_message("failed to bind huge (1GiB) pages to numa node %d (error: %d (0x%x))\n", numa_node, err, err);
+    }
+  }
+  return (*addr != NULL ? 0 : errno);
+}
+
+#else
+
+int _mi_prim_alloc_huge_os_pages(void* hint_addr, size_t size, int numa_node, bool* is_zero, void** addr) {
+  MI_UNUSED(hint_addr); MI_UNUSED(size); MI_UNUSED(numa_node);
+  *is_zero = false;
+  *addr = NULL;
+  return ENOMEM;
+}
+
+#endif
+
+//---------------------------------------------
+// NUMA nodes
+//---------------------------------------------
+
+#if defined(__linux__)
+
+#include <stdio.h>    // snprintf
+
+size_t _mi_prim_numa_node(void) {
+  #if defined(MI_HAS_SYSCALL_H) && defined(SYS_getcpu)
+    unsigned long node = 0;
+    unsigned long ncpu = 0;
+    long err = syscall(SYS_getcpu, &ncpu, &node, NULL);
+    if (err != 0) return 0;
+    return node;
+  #else
+    return 0;
+  #endif
+}
+
+size_t _mi_prim_numa_node_count(void) {
+  char buf[128];
+  unsigned node = 0;
+  for(node = 0; node < 256; node++) {
+    // enumerate node entries -- todo: it there a more efficient way to do this? (but ensure there is no allocation)
+    snprintf(buf, 127, "/sys/devices/system/node/node%u", node + 1);
+    if (mi_prim_access(buf,R_OK) != 0) break;
+  }
+  return (node+1);
+}
+
+#elif defined(__FreeBSD__) && __FreeBSD_version >= 1200000
+
+size_t _mi_prim_numa_node(void) {
+  domainset_t dom;
+  size_t node;
+  int policy;
+  if (cpuset_getdomain(CPU_LEVEL_CPUSET, CPU_WHICH_PID, -1, sizeof(dom), &dom, &policy) == -1) return 0ul;
+  for (node = 0; node < MAXMEMDOM; node++) {
+    if (DOMAINSET_ISSET(node, &dom)) return node;
+  }
+  return 0ul;
+}
+
+size_t _mi_prim_numa_node_count(void) {
+  size_t ndomains = 0;
+  size_t len = sizeof(ndomains);
+  if (sysctlbyname("vm.ndomains", &ndomains, &len, NULL, 0) == -1) return 0ul;
+  return ndomains;
+}
+
+#elif defined(__DragonFly__)
+
+size_t _mi_prim_numa_node(void) {
+  // TODO: DragonFly does not seem to provide any userland means to get this information.
+  return 0ul;
+}
+
+size_t _mi_prim_numa_node_count(void) {
+  size_t ncpus = 0, nvirtcoresperphys = 0;
+  size_t len = sizeof(size_t);
+  if (sysctlbyname("hw.ncpu", &ncpus, &len, NULL, 0) == -1) return 0ul;
+  if (sysctlbyname("hw.cpu_topology_ht_ids", &nvirtcoresperphys, &len, NULL, 0) == -1) return 0ul;
+  return nvirtcoresperphys * ncpus;
+}
+
+#else
+
+size_t _mi_prim_numa_node(void) {
+  return 0;
+}
+
+size_t _mi_prim_numa_node_count(void) {
+  return 1;
+}
+
+#endif
+
+// ----------------------------------------------------------------
+// Clock
+// ----------------------------------------------------------------
+
+#include <time.h>
+
+#if defined(CLOCK_REALTIME) || defined(CLOCK_MONOTONIC)
+
+mi_msecs_t _mi_prim_clock_now(void) {
+  struct timespec t;
+  #ifdef CLOCK_MONOTONIC
+  clock_gettime(CLOCK_MONOTONIC, &t);
+  #else
+  clock_gettime(CLOCK_REALTIME, &t);
+  #endif
+  return ((mi_msecs_t)t.tv_sec * 1000) + ((mi_msecs_t)t.tv_nsec / 1000000);
+}
+
+#else
+
+// low resolution timer
+mi_msecs_t _mi_prim_clock_now(void) {
+  #if !defined(CLOCKS_PER_SEC) || (CLOCKS_PER_SEC == 1000) || (CLOCKS_PER_SEC == 0)
+  return (mi_msecs_t)clock();
+  #elif (CLOCKS_PER_SEC < 1000)
+  return (mi_msecs_t)clock() * (1000 / (mi_msecs_t)CLOCKS_PER_SEC);
+  #else
+  return (mi_msecs_t)clock() / ((mi_msecs_t)CLOCKS_PER_SEC / 1000);
+  #endif
+}
+
+#endif
+
+
+
+
+//----------------------------------------------------------------
+// Process info
+//----------------------------------------------------------------
+
+#if defined(__unix__) || defined(__unix) || defined(unix) || defined(__APPLE__) || defined(__HAIKU__)
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/resource.h>
+
+#if defined(__APPLE__)
+#include <mach/mach.h>
+#endif
+
+#if defined(__HAIKU__)
+#include <kernel/OS.h>
+#endif
+
+static mi_msecs_t timeval_secs(const struct timeval* tv) {
+  return ((mi_msecs_t)tv->tv_sec * 1000L) + ((mi_msecs_t)tv->tv_usec / 1000L);
+}
+
+void _mi_prim_process_info(mi_process_info_t* pinfo)
+{
+  struct rusage rusage;
+  getrusage(RUSAGE_SELF, &rusage);
+  pinfo->utime = timeval_secs(&rusage.ru_utime);
+  pinfo->stime = timeval_secs(&rusage.ru_stime);
+#if !defined(__HAIKU__)
+  pinfo->page_faults = rusage.ru_majflt;
+#endif
+#if defined(__HAIKU__)
+  // Haiku does not have (yet?) a way to
+  // get these stats per process
+  thread_info tid;
+  area_info mem;
+  ssize_t c;
+  get_thread_info(find_thread(0), &tid);
+  while (get_next_area_info(tid.team, &c, &mem) == B_OK) {
+    pinfo->peak_rss += mem.ram_size;
+  }
+  pinfo->page_faults = 0;
+#elif defined(__APPLE__)
+  pinfo->peak_rss = rusage.ru_maxrss;         // macos reports in bytes
+  #ifdef MACH_TASK_BASIC_INFO
+  struct mach_task_basic_info info;
+  mach_msg_type_number_t infoCount = MACH_TASK_BASIC_INFO_COUNT;
+  if (task_info(mach_task_self(), MACH_TASK_BASIC_INFO, (task_info_t)&info, &infoCount) == KERN_SUCCESS) {
+    pinfo->current_rss = (size_t)info.resident_size;
+  }
+  #else
+  struct task_basic_info info;
+  mach_msg_type_number_t infoCount = TASK_BASIC_INFO_COUNT;
+  if (task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)&info, &infoCount) == KERN_SUCCESS) {
+    pinfo->current_rss = (size_t)info.resident_size;
+  }
+  #endif
+#else
+  pinfo->peak_rss = rusage.ru_maxrss * 1024;  // Linux/BSD report in KiB
+#endif
+  // use defaults for commit
+}
+
+#else
+
+#ifndef __wasi__
+// WebAssembly instances are not processes
+#pragma message("define a way to get process info")
+#endif
+
+void _mi_prim_process_info(mi_process_info_t* pinfo)
+{
+  // use defaults
+  MI_UNUSED(pinfo);
+}
+
+#endif
+
+
+//----------------------------------------------------------------
+// Output
+//----------------------------------------------------------------
+
+void _mi_prim_out_stderr( const char* msg ) {
+  fputs(msg,stderr);
+}
+
+
+//----------------------------------------------------------------
+// Environment
+//----------------------------------------------------------------
+
+#if !defined(MI_USE_ENVIRON) || (MI_USE_ENVIRON!=0)
+// On Posix systemsr use `environ` to access environment variables
+// even before the C runtime is initialized.
+#if defined(__APPLE__) && defined(__has_include) && __has_include(<crt_externs.h>)
+#include <crt_externs.h>
+static char** mi_get_environ(void) {
+  return (*_NSGetEnviron());
+}
+#else
+extern char** environ;
+static char** mi_get_environ(void) {
+  return environ;
+}
+#endif
+bool _mi_prim_getenv(const char* name, char* result, size_t result_size) {
+  if (name==NULL) return false;
+  const size_t len = _mi_strlen(name);
+  if (len == 0) return false;
+  char** env = mi_get_environ();
+  if (env == NULL) return false;
+  // compare up to 10000 entries
+  for (int i = 0; i < 10000 && env[i] != NULL; i++) {
+    const char* s = env[i];
+    if (_mi_strnicmp(name, s, len) == 0 && s[len] == '=') { // case insensitive
+      // found it
+      _mi_strlcpy(result, s + len + 1, result_size);
+      return true;
+    }
+  }
+  return false;
+}
+#else
+// fallback: use standard C `getenv` but this cannot be used while initializing the C runtime
+bool _mi_prim_getenv(const char* name, char* result, size_t result_size) {
+  // cannot call getenv() when still initializing the C runtime.
+  if (_mi_preloading()) return false;
+  const char* s = getenv(name);
+  if (s == NULL) {
+    // we check the upper case name too.
+    char buf[64+1];
+    size_t len = _mi_strnlen(name,sizeof(buf)-1);
+    for (size_t i = 0; i < len; i++) {
+      buf[i] = _mi_toupper(name[i]);
+    }
+    buf[len] = 0;
+    s = getenv(buf);
+  }
+  if (s == NULL || _mi_strnlen(s,result_size) >= result_size)  return false;
+  _mi_strlcpy(result, s, result_size);
+  return true;
+}
+#endif  // !MI_USE_ENVIRON
+
+
+//----------------------------------------------------------------
+// Random
+//----------------------------------------------------------------
+
+#if defined(__APPLE__)
+
+#include <AvailabilityMacros.h>
+#if defined(MAC_OS_X_VERSION_10_10) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_10
+#include <CommonCrypto/CommonCryptoError.h>
+#include <CommonCrypto/CommonRandom.h>
+#endif
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  #if defined(MAC_OS_X_VERSION_10_15) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_15
+    // We prefere CCRandomGenerateBytes as it returns an error code while arc4random_buf
+    // may fail silently on macOS. See PR #390, and <https://opensource.apple.com/source/Libc/Libc-1439.40.11/gen/FreeBSD/arc4random.c.auto.html>
+    return (CCRandomGenerateBytes(buf, buf_len) == kCCSuccess);
+  #else
+    // fall back on older macOS
+    arc4random_buf(buf, buf_len);
+    return true;
+  #endif
+}
+
+#elif defined(__ANDROID__) || defined(__DragonFly__) || \
+      defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \
+      defined(__sun)
+
+#include <stdlib.h>
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  arc4random_buf(buf, buf_len);
+  return true;
+}
+
+#elif defined(__linux__) || defined(__HAIKU__)
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  // Modern Linux provides `getrandom` but different distributions either use `sys/random.h` or `linux/random.h`
+  // and for the latter the actual `getrandom` call is not always defined.
+  // (see <https://stackoverflow.com/questions/45237324/why-doesnt-getrandom-compile>)
+  // We therefore use a syscall directly and fall back dynamically to /dev/urandom when needed.
+  #if defined(MI_HAS_SYSCALL_H) && defined(SYS_getrandom)
+    #ifndef GRND_NONBLOCK
+    #define GRND_NONBLOCK (1)
+    #endif
+    static _Atomic(uintptr_t) no_getrandom; // = 0
+    if (mi_atomic_load_acquire(&no_getrandom)==0) {
+      ssize_t ret = syscall(SYS_getrandom, buf, buf_len, GRND_NONBLOCK);
+      if (ret >= 0) return (buf_len == (size_t)ret);
+      if (errno != ENOSYS) return false;
+      mi_atomic_store_release(&no_getrandom, (uintptr_t)1); // don't call again, and fall back to /dev/urandom
+    }
+  #endif
+  int flags = O_RDONLY;
+  #if defined(O_CLOEXEC)
+  flags |= O_CLOEXEC;
+  #endif
+  int fd = mi_prim_open("/dev/urandom", flags);
+  if (fd < 0) return false;
+  size_t count = 0;
+  while(count < buf_len) {
+    ssize_t ret = mi_prim_read(fd, (char*)buf + count, buf_len - count);
+    if (ret<=0) {
+      if (errno!=EAGAIN && errno!=EINTR) break;
+    }
+    else {
+      count += ret;
+    }
+  }
+  mi_prim_close(fd);
+  return (count==buf_len);
+}
+
+#else
+
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  return false;
+}
+
+#endif
+
+
+//----------------------------------------------------------------
+// Thread init/done
+//----------------------------------------------------------------
+
+#if defined(MI_USE_PTHREADS)
+
+// use pthread local storage keys to detect thread ending
+// (and used with MI_TLS_PTHREADS for the default heap)
+pthread_key_t _mi_heap_default_key = (pthread_key_t)(-1);
+
+static void mi_pthread_done(void* value) {
+  if (value!=NULL) {
+    _mi_thread_done((mi_heap_t*)value);
+  }
+}
+
+void _mi_prim_thread_init_auto_done(void) {
+  mi_assert_internal(_mi_heap_default_key == (pthread_key_t)(-1));
+  pthread_key_create(&_mi_heap_default_key, &mi_pthread_done);
+}
+
+void _mi_prim_thread_done_auto_done(void) {
+  // nothing to do
+}
+
+void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
+  if (_mi_heap_default_key != (pthread_key_t)(-1)) {  // can happen during recursive invocation on freeBSD
+    pthread_setspecific(_mi_heap_default_key, heap);
+  }
+}
+
+#else
+
+void _mi_prim_thread_init_auto_done(void) {
+  // nothing
+}
+
+void _mi_prim_thread_done_auto_done(void) {
+  // nothing
+}
+
+void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
+  MI_UNUSED(heap);
+}
+
+#endif
diff --git a/Objects/mimalloc/prim/wasi/prim.c b/Objects/mimalloc/prim/wasi/prim.c
new file mode 100644
index 00000000000000..640dac0493f573
--- /dev/null
+++ b/Objects/mimalloc/prim/wasi/prim.c
@@ -0,0 +1,276 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// This file is included in `src/prim/prim.c`
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"
+#include <unistd.h>               // sbrk()
+
+//---------------------------------------------
+// Initialize
+//---------------------------------------------
+
+void _mi_prim_mem_init( mi_os_mem_config_t* config ) {
+  config->page_size = 64*MI_KiB; // WebAssembly has a fixed page size: 64KiB
+  config->alloc_granularity = 16;
+  config->has_overcommit = false;
+  config->must_free_whole = true;
+  config->has_virtual_reserve = false;
+}
+
+//---------------------------------------------
+// Free
+//---------------------------------------------
+
+int _mi_prim_free(void* addr, size_t size ) {
+  MI_UNUSED(addr); MI_UNUSED(size);
+  // wasi heap cannot be shrunk
+  return 0;
+}
+
+
+//---------------------------------------------
+// Allocation: sbrk or memory_grow
+//---------------------------------------------
+
+#if defined(MI_USE_SBRK)
+  static void* mi_memory_grow( size_t size ) {
+    void* p = sbrk(size);
+    if (p == (void*)(-1)) return NULL;
+    #if !defined(__wasi__) // on wasi this is always zero initialized already (?)
+    memset(p,0,size);
+    #endif
+    return p;
+  }
+#elif defined(__wasi__)
+  static void* mi_memory_grow( size_t size ) {
+    size_t base = (size > 0 ? __builtin_wasm_memory_grow(0,_mi_divide_up(size, _mi_os_page_size()))
+                            : __builtin_wasm_memory_size(0));
+    if (base == SIZE_MAX) return NULL;
+    return (void*)(base * _mi_os_page_size());
+  }
+#endif
+
+#if defined(MI_USE_PTHREADS)
+static pthread_mutex_t mi_heap_grow_mutex = PTHREAD_MUTEX_INITIALIZER;
+#endif
+
+static void* mi_prim_mem_grow(size_t size, size_t try_alignment) {
+  void* p = NULL;
+  if (try_alignment <= 1) {
+    // `sbrk` is not thread safe in general so try to protect it (we could skip this on WASM but leave it in for now)
+    #if defined(MI_USE_PTHREADS)
+    pthread_mutex_lock(&mi_heap_grow_mutex);
+    #endif
+    p = mi_memory_grow(size);
+    #if defined(MI_USE_PTHREADS)
+    pthread_mutex_unlock(&mi_heap_grow_mutex);
+    #endif
+  }
+  else {
+    void* base = NULL;
+    size_t alloc_size = 0;
+    // to allocate aligned use a lock to try to avoid thread interaction
+    // between getting the current size and actual allocation
+    // (also, `sbrk` is not thread safe in general)
+    #if defined(MI_USE_PTHREADS)
+    pthread_mutex_lock(&mi_heap_grow_mutex);
+    #endif
+    {
+      void* current = mi_memory_grow(0);  // get current size
+      if (current != NULL) {
+        void* aligned_current = mi_align_up_ptr(current, try_alignment);  // and align from there to minimize wasted space
+        alloc_size = _mi_align_up( ((uint8_t*)aligned_current - (uint8_t*)current) + size, _mi_os_page_size());
+        base = mi_memory_grow(alloc_size);
+      }
+    }
+    #if defined(MI_USE_PTHREADS)
+    pthread_mutex_unlock(&mi_heap_grow_mutex);
+    #endif
+    if (base != NULL) {
+      p = mi_align_up_ptr(base, try_alignment);
+      if ((uint8_t*)p + size > (uint8_t*)base + alloc_size) {
+        // another thread used wasm_memory_grow/sbrk in-between and we do not have enough
+        // space after alignment. Give up (and waste the space as we cannot shrink :-( )
+        // (in `mi_os_mem_alloc_aligned` this will fall back to overallocation to align)
+        p = NULL;
+      }
+    }
+  }
+  /*
+  if (p == NULL) {
+    _mi_warning_message("unable to allocate sbrk/wasm_memory_grow OS memory (%zu bytes, %zu alignment)\n", size, try_alignment);
+    errno = ENOMEM;
+    return NULL;
+  }
+  */
+  mi_assert_internal( p == NULL || try_alignment == 0 || (uintptr_t)p % try_alignment == 0 );
+  return p;
+}
+
+// Note: the `try_alignment` is just a hint and the returned pointer is not guaranteed to be aligned.
+int _mi_prim_alloc(size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, void** addr) {
+  MI_UNUSED(allow_large); MI_UNUSED(commit);
+  *is_large = false;
+  *is_zero = false;
+  *addr = mi_prim_mem_grow(size, try_alignment);
+  return (*addr != NULL ? 0 : ENOMEM);
+}
+
+
+//---------------------------------------------
+// Commit/Reset/Protect
+//---------------------------------------------
+
+int _mi_prim_commit(void* addr, size_t size, bool* is_zero) {
+  MI_UNUSED(addr); MI_UNUSED(size);
+  *is_zero = false;
+  return 0;
+}
+
+int _mi_prim_decommit(void* addr, size_t size, bool* needs_recommit) {
+  MI_UNUSED(addr); MI_UNUSED(size);
+  *needs_recommit = false;
+  return 0;
+}
+
+int _mi_prim_reset(void* addr, size_t size) {
+  MI_UNUSED(addr); MI_UNUSED(size);
+  return 0;
+}
+
+int _mi_prim_protect(void* addr, size_t size, bool protect) {
+  MI_UNUSED(addr); MI_UNUSED(size); MI_UNUSED(protect);
+  return 0;
+}
+
+
+//---------------------------------------------
+// Huge pages and NUMA nodes
+//---------------------------------------------
+
+int _mi_prim_alloc_huge_os_pages(void* hint_addr, size_t size, int numa_node, bool* is_zero, void** addr) {
+  MI_UNUSED(hint_addr); MI_UNUSED(size); MI_UNUSED(numa_node);
+  *is_zero = true;
+  *addr = NULL;
+  return ENOSYS;
+}
+
+size_t _mi_prim_numa_node(void) {
+  return 0;
+}
+
+size_t _mi_prim_numa_node_count(void) {
+  return 1;
+}
+
+
+//----------------------------------------------------------------
+// Clock
+//----------------------------------------------------------------
+
+#include <time.h>
+
+#if defined(CLOCK_REALTIME) || defined(CLOCK_MONOTONIC)
+
+mi_msecs_t _mi_prim_clock_now(void) {
+  struct timespec t;
+  #ifdef CLOCK_MONOTONIC
+  clock_gettime(CLOCK_MONOTONIC, &t);
+  #else
+  clock_gettime(CLOCK_REALTIME, &t);
+  #endif
+  return ((mi_msecs_t)t.tv_sec * 1000) + ((mi_msecs_t)t.tv_nsec / 1000000);
+}
+
+#else
+
+// low resolution timer
+mi_msecs_t _mi_prim_clock_now(void) {
+  #if !defined(CLOCKS_PER_SEC) || (CLOCKS_PER_SEC == 1000) || (CLOCKS_PER_SEC == 0)
+  return (mi_msecs_t)clock();
+  #elif (CLOCKS_PER_SEC < 1000)
+  return (mi_msecs_t)clock() * (1000 / (mi_msecs_t)CLOCKS_PER_SEC);
+  #else
+  return (mi_msecs_t)clock() / ((mi_msecs_t)CLOCKS_PER_SEC / 1000);
+  #endif
+}
+
+#endif
+
+
+//----------------------------------------------------------------
+// Process info
+//----------------------------------------------------------------
+
+void _mi_prim_process_info(mi_process_info_t* pinfo)
+{
+  // use defaults
+  MI_UNUSED(pinfo);
+}
+
+
+//----------------------------------------------------------------
+// Output
+//----------------------------------------------------------------
+
+void _mi_prim_out_stderr( const char* msg ) {
+  fputs(msg,stderr);
+}
+
+
+//----------------------------------------------------------------
+// Environment
+//----------------------------------------------------------------
+
+bool _mi_prim_getenv(const char* name, char* result, size_t result_size) {
+  // cannot call getenv() when still initializing the C runtime.
+  if (_mi_preloading()) return false;
+  const char* s = getenv(name);
+  if (s == NULL) {
+    // we check the upper case name too.
+    char buf[64+1];
+    size_t len = _mi_strnlen(name,sizeof(buf)-1);
+    for (size_t i = 0; i < len; i++) {
+      buf[i] = _mi_toupper(name[i]);
+    }
+    buf[len] = 0;
+    s = getenv(buf);
+  }
+  if (s == NULL || _mi_strnlen(s,result_size) >= result_size)  return false;
+  _mi_strlcpy(result, s, result_size);
+  return true;
+}
+
+
+//----------------------------------------------------------------
+// Random
+//----------------------------------------------------------------
+
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  return false;
+}
+
+
+//----------------------------------------------------------------
+// Thread init/done
+//----------------------------------------------------------------
+
+void _mi_prim_thread_init_auto_done(void) {
+  // nothing
+}
+
+void _mi_prim_thread_done_auto_done(void) {
+  // nothing
+}
+
+void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
+  MI_UNUSED(heap);
+}
diff --git a/Objects/mimalloc/prim/windows/etw-mimalloc.wprp b/Objects/mimalloc/prim/windows/etw-mimalloc.wprp
new file mode 100644
index 00000000000000..b00cd7adf2285c
--- /dev/null
+++ b/Objects/mimalloc/prim/windows/etw-mimalloc.wprp
@@ -0,0 +1,61 @@
+<WindowsPerformanceRecorder Version="1.0">
+  <Profiles>
+    <SystemCollector Id="WPR_initiated_WprApp_WPR_System_Collector" Name="WPR_initiated_WprApp_WPR System Collector">
+      <BufferSize Value="1024" />
+      <Buffers Value="100" />
+    </SystemCollector>
+    <EventCollector Id="Mimalloc_Collector" Name="Mimalloc Collector">
+      <BufferSize Value="1024" />
+      <Buffers Value="100" />
+    </EventCollector>
+    <SystemProvider Id="WPR_initiated_WprApp_WPR_System_Collector_Provider">
+      <Keywords>
+        <Keyword Value="Loader" />
+      </Keywords>
+    </SystemProvider>
+    <EventProvider Id="MimallocEventProvider" Name="138f4dbb-ee04-4899-aa0a-572ad4475779" NonPagedMemory="true" Stack="true">
+      <EventFilters FilterIn="true">
+        <EventId Value="100" />
+        <EventId Value="101" />
+      </EventFilters>
+    </EventProvider>
+    <Profile Id="CustomHeap.Verbose.File" Name="CustomHeap" Description="RunningProfile:CustomHeap.Verbose.File" LoggingMode="File" DetailLevel="Verbose">
+      <ProblemCategories>
+        <ProblemCategory Value="Resource Analysis" />
+      </ProblemCategories>
+      <Collectors>
+        <SystemCollectorId Value="WPR_initiated_WprApp_WPR_System_Collector">
+          <SystemProviderId Value="WPR_initiated_WprApp_WPR_System_Collector_Provider" />
+        </SystemCollectorId>
+        <EventCollectorId Value="Mimalloc_Collector">
+          <EventProviders>
+            <EventProviderId Value="MimallocEventProvider" >
+              <Keywords>
+                <Keyword Value="100"/>
+                <Keyword Value="101"/>
+              </Keywords>
+            </EventProviderId>
+          </EventProviders>
+        </EventCollectorId>
+      </Collectors>
+      <TraceMergeProperties>
+        <TraceMergeProperty Id="BaseVerboseTraceMergeProperties" Name="BaseTraceMergeProperties">
+          <DeletePreMergedTraceFiles Value="true" />
+          <FileCompression Value="false" />
+          <InjectOnly Value="false" />
+          <SkipMerge Value="false" />
+          <CustomEvents>
+            <CustomEvent Value="ImageId" />
+            <CustomEvent Value="BuildInfo" />
+            <CustomEvent Value="VolumeMapping" />
+            <CustomEvent Value="EventMetadata" />
+            <CustomEvent Value="PerfTrackMetadata" />
+            <CustomEvent Value="WinSAT" />
+            <CustomEvent Value="NetworkInterface" />
+          </CustomEvents>
+        </TraceMergeProperty>
+      </TraceMergeProperties>
+    </Profile>
+  </Profiles>
+</WindowsPerformanceRecorder>
+
diff --git a/Objects/mimalloc/prim/windows/etw.h b/Objects/mimalloc/prim/windows/etw.h
new file mode 100644
index 00000000000000..4e0a092a10f4ba
--- /dev/null
+++ b/Objects/mimalloc/prim/windows/etw.h
@@ -0,0 +1,905 @@
+//**********************************************************************`
+//* This is an include file generated by Message Compiler.             *`
+//*                                                                    *`
+//* Copyright (c) Microsoft Corporation. All Rights Reserved.          *`
+//**********************************************************************`
+#pragma once
+
+//*****************************************************************************
+//
+// Notes on the ETW event code generated by MC:
+//
+// - Structures and arrays of structures are treated as an opaque binary blob.
+//   The caller is responsible for packing the data for the structure into a
+//   single region of memory, with no padding between values. The macro will
+//   have an extra parameter for the length of the blob.
+// - Arrays of nul-terminated strings must be packed by the caller into a
+//   single binary blob containing the correct number of strings, with a nul
+//   after each string. The size of the blob is specified in characters, and
+//   includes the final nul.
+// - Arrays of SID are treated as a single binary blob. The caller is
+//   responsible for packing the SID values into a single region of memory with
+//   no padding.
+// - The length attribute on the data element in the manifest is significant
+//   for values with intype win:UnicodeString, win:AnsiString, or win:Binary.
+//   The length attribute must be specified for win:Binary, and is optional for
+//   win:UnicodeString and win:AnsiString (if no length is given, the strings
+//   are assumed to be nul-terminated). For win:UnicodeString, the length is
+//   measured in characters, not bytes.
+// - For an array of win:UnicodeString, win:AnsiString, or win:Binary, the
+//   length attribute applies to every value in the array, so every value in
+//   the array must have the same length. The values in the array are provided
+//   to the macro via a single pointer -- the caller is responsible for packing
+//   all of the values into a single region of memory with no padding between
+//   values.
+// - Values of type win:CountedUnicodeString, win:CountedAnsiString, and
+//   win:CountedBinary can be generated and collected on Vista or later.
+//   However, they may not decode properly without the Windows 10 2018 Fall
+//   Update.
+// - Arrays of type win:CountedUnicodeString, win:CountedAnsiString, and
+//   win:CountedBinary must be packed by the caller into a single region of
+//   memory. The format for each item is a UINT16 byte-count followed by that
+//   many bytes of data. When providing the array to the generated macro, you
+//   must provide the total size of the packed array data, including the UINT16
+//   sizes for each item. In the case of win:CountedUnicodeString, the data
+//   size is specified in WCHAR (16-bit) units. In the case of
+//   win:CountedAnsiString and win:CountedBinary, the data size is specified in
+//   bytes.
+//
+//*****************************************************************************
+
+#include <wmistr.h>
+#include <evntrace.h>
+#include <evntprov.h>
+
+#ifndef ETW_INLINE
+  #ifdef _ETW_KM_
+    // In kernel mode, save stack space by never inlining templates.
+    #define ETW_INLINE DECLSPEC_NOINLINE __inline
+  #else
+    // In user mode, save code size by inlining templates as appropriate.
+    #define ETW_INLINE __inline
+  #endif
+#endif // ETW_INLINE
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+//
+// MCGEN_DISABLE_PROVIDER_CODE_GENERATION macro:
+// Define this macro to have the compiler skip the generated functions in this
+// header.
+//
+#ifndef MCGEN_DISABLE_PROVIDER_CODE_GENERATION
+
+//
+// MCGEN_USE_KERNEL_MODE_APIS macro:
+// Controls whether the generated code uses kernel-mode or user-mode APIs.
+// - Set to 0 to use Windows user-mode APIs such as EventRegister.
+// - Set to 1 to use Windows kernel-mode APIs such as EtwRegister.
+// Default is based on whether the _ETW_KM_ macro is defined (i.e. by wdm.h).
+// Note that the APIs can also be overridden directly, e.g. by setting the
+// MCGEN_EVENTWRITETRANSFER or MCGEN_EVENTREGISTER macros.
+//
+#ifndef MCGEN_USE_KERNEL_MODE_APIS
+  #ifdef _ETW_KM_
+    #define MCGEN_USE_KERNEL_MODE_APIS 1
+  #else
+    #define MCGEN_USE_KERNEL_MODE_APIS 0
+  #endif
+#endif // MCGEN_USE_KERNEL_MODE_APIS
+
+//
+// MCGEN_HAVE_EVENTSETINFORMATION macro:
+// Controls how McGenEventSetInformation uses the EventSetInformation API.
+// - Set to 0 to disable the use of EventSetInformation
+//   (McGenEventSetInformation will always return an error).
+// - Set to 1 to directly invoke MCGEN_EVENTSETINFORMATION.
+// - Set to 2 to to locate EventSetInformation at runtime via GetProcAddress
+//   (user-mode) or MmGetSystemRoutineAddress (kernel-mode).
+// Default is determined as follows:
+// - If MCGEN_EVENTSETINFORMATION has been customized, set to 1
+//   (i.e. use MCGEN_EVENTSETINFORMATION).
+// - Else if the target OS version has EventSetInformation, set to 1
+//   (i.e. use MCGEN_EVENTSETINFORMATION).
+// - Else set to 2 (i.e. try to dynamically locate EventSetInformation).
+// Note that an McGenEventSetInformation function will only be generated if one
+// or more provider in a manifest has provider traits.
+//
+#ifndef MCGEN_HAVE_EVENTSETINFORMATION
+  #ifdef MCGEN_EVENTSETINFORMATION             // if MCGEN_EVENTSETINFORMATION has been customized,
+    #define MCGEN_HAVE_EVENTSETINFORMATION   1 //   directly invoke MCGEN_EVENTSETINFORMATION(...).
+  #elif MCGEN_USE_KERNEL_MODE_APIS             // else if using kernel-mode APIs,
+    #if NTDDI_VERSION >= 0x06040000            //   if target OS is Windows 10 or later,
+      #define MCGEN_HAVE_EVENTSETINFORMATION 1 //     directly invoke MCGEN_EVENTSETINFORMATION(...).
+    #else                                      //   else
+      #define MCGEN_HAVE_EVENTSETINFORMATION 2 //     find "EtwSetInformation" via MmGetSystemRoutineAddress.
+    #endif                                     // else (using user-mode APIs)
+  #else                                        //   if target OS and SDK is Windows 8 or later,
+    #if WINVER >= 0x0602 && defined(EVENT_FILTER_TYPE_SCHEMATIZED)
+      #define MCGEN_HAVE_EVENTSETINFORMATION 1 //     directly invoke MCGEN_EVENTSETINFORMATION(...).
+    #else                                      //   else
+      #define MCGEN_HAVE_EVENTSETINFORMATION 2 //     find "EventSetInformation" via GetModuleHandleExW/GetProcAddress.
+    #endif
+  #endif
+#endif // MCGEN_HAVE_EVENTSETINFORMATION
+
+//
+// MCGEN Override Macros
+//
+// The following override macros may be defined before including this header
+// to control the APIs used by this header:
+//
+// - MCGEN_EVENTREGISTER
+// - MCGEN_EVENTUNREGISTER
+// - MCGEN_EVENTSETINFORMATION
+// - MCGEN_EVENTWRITETRANSFER
+//
+// If the the macro is undefined, the MC implementation will default to the
+// corresponding ETW APIs. For example, if the MCGEN_EVENTREGISTER macro is
+// undefined, the EventRegister[MyProviderName] macro will use EventRegister
+// in user mode and will use EtwRegister in kernel mode.
+//
+// To prevent issues from conflicting definitions of these macros, the value
+// of the override macro will be used as a suffix in certain internal function
+// names. Because of this, the override macros must follow certain rules:
+//
+// - The macro must be defined before any MC-generated header is included and
+//   must not be undefined or redefined after any MC-generated header is
+//   included. Different translation units (i.e. different .c or .cpp files)
+//   may set the macros to different values, but within a translation unit
+//   (within a single .c or .cpp file), the macro must be set once and not
+//   changed.
+// - The override must be an object-like macro, not a function-like macro
+//   (i.e. the override macro must not have a parameter list).
+// - The override macro's value must be a simple identifier, i.e. must be
+//   something that starts with a letter or '_' and contains only letters,
+//   numbers, and '_' characters.
+// - If the override macro's value is the name of a second object-like macro,
+//   the second object-like macro must follow the same rules. (The override
+//   macro's value can also be the name of a function-like macro, in which
+//   case the function-like macro does not need to follow the same rules.)
+//
+// For example, the following will cause compile errors:
+//
+//   #define MCGEN_EVENTWRITETRANSFER MyNamespace::MyClass::MyFunction // Value has non-identifier characters (colon).
+//   #define MCGEN_EVENTWRITETRANSFER GetEventWriteFunctionPointer(7)  // Value has non-identifier characters (parentheses).
+//   #define MCGEN_EVENTWRITETRANSFER(h,e,a,r,c,d) EventWrite(h,e,c,d) // Override is defined as a function-like macro.
+//   #define MY_OBJECT_LIKE_MACRO     MyNamespace::MyClass::MyEventWriteFunction
+//   #define MCGEN_EVENTWRITETRANSFER MY_OBJECT_LIKE_MACRO // Evaluates to something with non-identifier characters (colon).
+//
+// The following would be ok:
+//
+//   #define MCGEN_EVENTWRITETRANSFER  MyEventWriteFunction1  // OK, suffix will be "MyEventWriteFunction1".
+//   #define MY_OBJECT_LIKE_MACRO      MyEventWriteFunction2
+//   #define MCGEN_EVENTWRITETRANSFER  MY_OBJECT_LIKE_MACRO   // OK, suffix will be "MyEventWriteFunction2".
+//   #define MY_FUNCTION_LIKE_MACRO(h,e,a,r,c,d) MyNamespace::MyClass::MyEventWriteFunction3(h,e,c,d)
+//   #define MCGEN_EVENTWRITETRANSFER  MY_FUNCTION_LIKE_MACRO // OK, suffix will be "MY_FUNCTION_LIKE_MACRO".
+//
+#ifndef MCGEN_EVENTREGISTER
+  #if MCGEN_USE_KERNEL_MODE_APIS
+    #define MCGEN_EVENTREGISTER        EtwRegister
+  #else
+    #define MCGEN_EVENTREGISTER        EventRegister
+  #endif
+#endif // MCGEN_EVENTREGISTER
+#ifndef MCGEN_EVENTUNREGISTER
+  #if MCGEN_USE_KERNEL_MODE_APIS
+    #define MCGEN_EVENTUNREGISTER      EtwUnregister
+  #else
+    #define MCGEN_EVENTUNREGISTER      EventUnregister
+  #endif
+#endif // MCGEN_EVENTUNREGISTER
+#ifndef MCGEN_EVENTSETINFORMATION
+  #if MCGEN_USE_KERNEL_MODE_APIS
+    #define MCGEN_EVENTSETINFORMATION  EtwSetInformation
+  #else
+    #define MCGEN_EVENTSETINFORMATION  EventSetInformation
+  #endif
+#endif // MCGEN_EVENTSETINFORMATION
+#ifndef MCGEN_EVENTWRITETRANSFER
+  #if MCGEN_USE_KERNEL_MODE_APIS
+    #define MCGEN_EVENTWRITETRANSFER   EtwWriteTransfer
+  #else
+    #define MCGEN_EVENTWRITETRANSFER   EventWriteTransfer
+  #endif
+#endif // MCGEN_EVENTWRITETRANSFER
+
+//
+// MCGEN_EVENT_ENABLED macro:
+// Override to control how the EventWrite[EventName] macros determine whether
+// an event is enabled. The default behavior is for EventWrite[EventName] to
+// use the EventEnabled[EventName] macros.
+//
+#ifndef MCGEN_EVENT_ENABLED
+#define MCGEN_EVENT_ENABLED(EventName) EventEnabled##EventName()
+#endif
+
+//
+// MCGEN_EVENT_ENABLED_FORCONTEXT macro:
+// Override to control how the EventWrite[EventName]_ForContext macros
+// determine whether an event is enabled. The default behavior is for
+// EventWrite[EventName]_ForContext to use the
+// EventEnabled[EventName]_ForContext macros.
+//
+#ifndef MCGEN_EVENT_ENABLED_FORCONTEXT
+#define MCGEN_EVENT_ENABLED_FORCONTEXT(pContext, EventName) EventEnabled##EventName##_ForContext(pContext)
+#endif
+
+//
+// MCGEN_ENABLE_CHECK macro:
+// Determines whether the specified event would be considered as enabled
+// based on the state of the specified context. Slightly faster than calling
+// McGenEventEnabled directly.
+//
+#ifndef MCGEN_ENABLE_CHECK
+#define MCGEN_ENABLE_CHECK(Context, Descriptor) (Context.IsEnabled && McGenEventEnabled(&Context, &Descriptor))
+#endif
+
+#if !defined(MCGEN_TRACE_CONTEXT_DEF)
+#define MCGEN_TRACE_CONTEXT_DEF
+// This structure is for use by MC-generated code and should not be used directly.
+typedef struct _MCGEN_TRACE_CONTEXT
+{
+    TRACEHANDLE            RegistrationHandle;
+    TRACEHANDLE            Logger;      // Used as pointer to provider traits.
+    ULONGLONG              MatchAnyKeyword;
+    ULONGLONG              MatchAllKeyword;
+    ULONG                  Flags;
+    ULONG                  IsEnabled;
+    UCHAR                  Level;
+    UCHAR                  Reserve;
+    USHORT                 EnableBitsCount;
+    PULONG                 EnableBitMask;
+    const ULONGLONG*       EnableKeyWords;
+    const UCHAR*           EnableLevel;
+} MCGEN_TRACE_CONTEXT, *PMCGEN_TRACE_CONTEXT;
+#endif // MCGEN_TRACE_CONTEXT_DEF
+
+#if !defined(MCGEN_LEVEL_KEYWORD_ENABLED_DEF)
+#define MCGEN_LEVEL_KEYWORD_ENABLED_DEF
+//
+// Determines whether an event with a given Level and Keyword would be
+// considered as enabled based on the state of the specified context.
+// Note that you may want to use MCGEN_ENABLE_CHECK instead of calling this
+// function directly.
+//
+FORCEINLINE
+BOOLEAN
+McGenLevelKeywordEnabled(
+    _In_ PMCGEN_TRACE_CONTEXT EnableInfo,
+    _In_ UCHAR Level,
+    _In_ ULONGLONG Keyword
+    )
+{
+    //
+    // Check if the event Level is lower than the level at which
+    // the channel is enabled.
+    // If the event Level is 0 or the channel is enabled at level 0,
+    // all levels are enabled.
+    //
+
+    if ((Level <= EnableInfo->Level) || // This also covers the case of Level == 0.
+        (EnableInfo->Level == 0)) {
+
+        //
+        // Check if Keyword is enabled
+        //
+
+        if ((Keyword == (ULONGLONG)0) ||
+            ((Keyword & EnableInfo->MatchAnyKeyword) &&
+             ((Keyword & EnableInfo->MatchAllKeyword) == EnableInfo->MatchAllKeyword))) {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+#endif // MCGEN_LEVEL_KEYWORD_ENABLED_DEF
+
+#if !defined(MCGEN_EVENT_ENABLED_DEF)
+#define MCGEN_EVENT_ENABLED_DEF
+//
+// Determines whether the specified event would be considered as enabled based
+// on the state of the specified context. Note that you may want to use
+// MCGEN_ENABLE_CHECK instead of calling this function directly.
+//
+FORCEINLINE
+BOOLEAN
+McGenEventEnabled(
+    _In_ PMCGEN_TRACE_CONTEXT EnableInfo,
+    _In_ PCEVENT_DESCRIPTOR EventDescriptor
+    )
+{
+    return McGenLevelKeywordEnabled(EnableInfo, EventDescriptor->Level, EventDescriptor->Keyword);
+}
+#endif // MCGEN_EVENT_ENABLED_DEF
+
+#if !defined(MCGEN_CONTROL_CALLBACK)
+#define MCGEN_CONTROL_CALLBACK
+
+// This function is for use by MC-generated code and should not be used directly.
+DECLSPEC_NOINLINE __inline
+VOID
+__stdcall
+McGenControlCallbackV2(
+    _In_ LPCGUID SourceId,
+    _In_ ULONG ControlCode,
+    _In_ UCHAR Level,
+    _In_ ULONGLONG MatchAnyKeyword,
+    _In_ ULONGLONG MatchAllKeyword,
+    _In_opt_ PEVENT_FILTER_DESCRIPTOR FilterData,
+    _Inout_opt_ PVOID CallbackContext
+    )
+/*++
+
+Routine Description:
+
+    This is the notification callback for Windows Vista and later.
+
+Arguments:
+
+    SourceId - The GUID that identifies the session that enabled the provider.
+
+    ControlCode - The parameter indicates whether the provider
+                  is being enabled or disabled.
+
+    Level - The level at which the event is enabled.
+
+    MatchAnyKeyword - The bitmask of keywords that the provider uses to
+                      determine the category of events that it writes.
+
+    MatchAllKeyword - This bitmask additionally restricts the category
+                      of events that the provider writes.
+
+    FilterData - The provider-defined data.
+
+    CallbackContext - The context of the callback that is defined when the provider
+                      called EtwRegister to register itself.
+
+Remarks:
+
+    ETW calls this function to notify provider of enable/disable
+
+--*/
+{
+    PMCGEN_TRACE_CONTEXT Ctx = (PMCGEN_TRACE_CONTEXT)CallbackContext;
+    ULONG Ix;
+#ifndef MCGEN_PRIVATE_ENABLE_CALLBACK_V2
+    UNREFERENCED_PARAMETER(SourceId);
+    UNREFERENCED_PARAMETER(FilterData);
+#endif
+
+    if (Ctx == NULL) {
+        return;
+    }
+
+    switch (ControlCode) {
+
+        case EVENT_CONTROL_CODE_ENABLE_PROVIDER:
+            Ctx->Level = Level;
+            Ctx->MatchAnyKeyword = MatchAnyKeyword;
+            Ctx->MatchAllKeyword = MatchAllKeyword;
+            Ctx->IsEnabled = EVENT_CONTROL_CODE_ENABLE_PROVIDER;
+
+            for (Ix = 0; Ix < Ctx->EnableBitsCount; Ix += 1) {
+                if (McGenLevelKeywordEnabled(Ctx, Ctx->EnableLevel[Ix], Ctx->EnableKeyWords[Ix]) != FALSE) {
+                    Ctx->EnableBitMask[Ix >> 5] |= (1 << (Ix % 32));
+                } else {
+                    Ctx->EnableBitMask[Ix >> 5] &= ~(1 << (Ix % 32));
+                }
+            }
+            break;
+
+        case EVENT_CONTROL_CODE_DISABLE_PROVIDER:
+            Ctx->IsEnabled = EVENT_CONTROL_CODE_DISABLE_PROVIDER;
+            Ctx->Level = 0;
+            Ctx->MatchAnyKeyword = 0;
+            Ctx->MatchAllKeyword = 0;
+            if (Ctx->EnableBitsCount > 0) {
+#pragma warning(suppress: 26451) // Arithmetic overflow cannot occur, no matter the value of EnableBitCount
+                RtlZeroMemory(Ctx->EnableBitMask, (((Ctx->EnableBitsCount - 1) / 32) + 1) * sizeof(ULONG));
+            }
+            break;
+
+        default:
+            break;
+    }
+
+#ifdef MCGEN_PRIVATE_ENABLE_CALLBACK_V2
+    //
+    // Call user defined callback
+    //
+    MCGEN_PRIVATE_ENABLE_CALLBACK_V2(
+        SourceId,
+        ControlCode,
+        Level,
+        MatchAnyKeyword,
+        MatchAllKeyword,
+        FilterData,
+        CallbackContext
+        );
+#endif // MCGEN_PRIVATE_ENABLE_CALLBACK_V2
+
+    return;
+}
+
+#endif // MCGEN_CONTROL_CALLBACK
+
+#ifndef _mcgen_PENABLECALLBACK
+  #if MCGEN_USE_KERNEL_MODE_APIS
+    #define _mcgen_PENABLECALLBACK      PETWENABLECALLBACK
+  #else
+    #define _mcgen_PENABLECALLBACK      PENABLECALLBACK
+  #endif
+#endif // _mcgen_PENABLECALLBACK
+
+#if !defined(_mcgen_PASTE2)
+// This macro is for use by MC-generated code and should not be used directly.
+#define _mcgen_PASTE2(a, b) _mcgen_PASTE2_imp(a, b)
+#define _mcgen_PASTE2_imp(a, b) a##b
+#endif // _mcgen_PASTE2
+
+#if !defined(_mcgen_PASTE3)
+// This macro is for use by MC-generated code and should not be used directly.
+#define _mcgen_PASTE3(a, b, c) _mcgen_PASTE3_imp(a, b, c)
+#define _mcgen_PASTE3_imp(a, b, c) a##b##_##c
+#endif // _mcgen_PASTE3
+
+//
+// Macro validation
+//
+
+// Validate MCGEN_EVENTREGISTER:
+
+// Trigger an error if MCGEN_EVENTREGISTER is not an unqualified (simple) identifier:
+struct _mcgen_PASTE2(MCGEN_EVENTREGISTER_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTREGISTER);
+
+// Trigger an error if MCGEN_EVENTREGISTER is redefined:
+typedef struct _mcgen_PASTE2(MCGEN_EVENTREGISTER_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTREGISTER)
+    MCGEN_EVENTREGISTER_must_not_be_redefined_between_headers;
+
+// Trigger an error if MCGEN_EVENTREGISTER is defined as a function-like macro:
+typedef void MCGEN_EVENTREGISTER_must_not_be_a_functionLike_macro_MCGEN_EVENTREGISTER;
+typedef int _mcgen_PASTE2(MCGEN_EVENTREGISTER_must_not_be_a_functionLike_macro_, MCGEN_EVENTREGISTER);
+
+// Validate MCGEN_EVENTUNREGISTER:
+
+// Trigger an error if MCGEN_EVENTUNREGISTER is not an unqualified (simple) identifier:
+struct _mcgen_PASTE2(MCGEN_EVENTUNREGISTER_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTUNREGISTER);
+
+// Trigger an error if MCGEN_EVENTUNREGISTER is redefined:
+typedef struct _mcgen_PASTE2(MCGEN_EVENTUNREGISTER_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTUNREGISTER)
+    MCGEN_EVENTUNREGISTER_must_not_be_redefined_between_headers;
+
+// Trigger an error if MCGEN_EVENTUNREGISTER is defined as a function-like macro:
+typedef void MCGEN_EVENTUNREGISTER_must_not_be_a_functionLike_macro_MCGEN_EVENTUNREGISTER;
+typedef int _mcgen_PASTE2(MCGEN_EVENTUNREGISTER_must_not_be_a_functionLike_macro_, MCGEN_EVENTUNREGISTER);
+
+// Validate MCGEN_EVENTSETINFORMATION:
+
+// Trigger an error if MCGEN_EVENTSETINFORMATION is not an unqualified (simple) identifier:
+struct _mcgen_PASTE2(MCGEN_EVENTSETINFORMATION_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTSETINFORMATION);
+
+// Trigger an error if MCGEN_EVENTSETINFORMATION is redefined:
+typedef struct _mcgen_PASTE2(MCGEN_EVENTSETINFORMATION_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTSETINFORMATION)
+    MCGEN_EVENTSETINFORMATION_must_not_be_redefined_between_headers;
+
+// Trigger an error if MCGEN_EVENTSETINFORMATION is defined as a function-like macro:
+typedef void MCGEN_EVENTSETINFORMATION_must_not_be_a_functionLike_macro_MCGEN_EVENTSETINFORMATION;
+typedef int _mcgen_PASTE2(MCGEN_EVENTSETINFORMATION_must_not_be_a_functionLike_macro_, MCGEN_EVENTSETINFORMATION);
+
+// Validate MCGEN_EVENTWRITETRANSFER:
+
+// Trigger an error if MCGEN_EVENTWRITETRANSFER is not an unqualified (simple) identifier:
+struct _mcgen_PASTE2(MCGEN_EVENTWRITETRANSFER_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTWRITETRANSFER);
+
+// Trigger an error if MCGEN_EVENTWRITETRANSFER is redefined:
+typedef struct _mcgen_PASTE2(MCGEN_EVENTWRITETRANSFER_definition_must_be_an_unqualified_identifier_, MCGEN_EVENTWRITETRANSFER)
+    MCGEN_EVENTWRITETRANSFER_must_not_be_redefined_between_headers;;
+
+// Trigger an error if MCGEN_EVENTWRITETRANSFER is defined as a function-like macro:
+typedef void MCGEN_EVENTWRITETRANSFER_must_not_be_a_functionLike_macro_MCGEN_EVENTWRITETRANSFER;
+typedef int _mcgen_PASTE2(MCGEN_EVENTWRITETRANSFER_must_not_be_a_functionLike_macro_, MCGEN_EVENTWRITETRANSFER);
+
+#ifndef McGenEventWrite_def
+#define McGenEventWrite_def
+
+// This macro is for use by MC-generated code and should not be used directly.
+#define McGenEventWrite _mcgen_PASTE2(McGenEventWrite_, MCGEN_EVENTWRITETRANSFER)
+
+// This function is for use by MC-generated code and should not be used directly.
+DECLSPEC_NOINLINE __inline
+ULONG __stdcall
+McGenEventWrite(
+    _In_ PMCGEN_TRACE_CONTEXT Context,
+    _In_ PCEVENT_DESCRIPTOR Descriptor,
+    _In_opt_ LPCGUID ActivityId,
+    _In_range_(1, 128) ULONG EventDataCount,
+    _Pre_cap_(EventDataCount) EVENT_DATA_DESCRIPTOR* EventData
+    )
+{
+    const USHORT UNALIGNED* Traits;
+
+    // Some customized MCGEN_EVENTWRITETRANSFER macros might ignore ActivityId.
+    UNREFERENCED_PARAMETER(ActivityId);
+
+    Traits = (const USHORT UNALIGNED*)(UINT_PTR)Context->Logger;
+
+    if (Traits == NULL) {
+        EventData[0].Ptr = 0;
+        EventData[0].Size = 0;
+        EventData[0].Reserved = 0;
+    } else {
+        EventData[0].Ptr = (ULONG_PTR)Traits;
+        EventData[0].Size = *Traits;
+        EventData[0].Reserved = 2; // EVENT_DATA_DESCRIPTOR_TYPE_PROVIDER_METADATA
+    }
+
+    return MCGEN_EVENTWRITETRANSFER(
+        Context->RegistrationHandle,
+        Descriptor,
+        ActivityId,
+        NULL,
+        EventDataCount,
+        EventData);
+}
+#endif // McGenEventWrite_def
+
+#if !defined(McGenEventRegisterUnregister)
+#define McGenEventRegisterUnregister
+
+// This macro is for use by MC-generated code and should not be used directly.
+#define McGenEventRegister _mcgen_PASTE2(McGenEventRegister_, MCGEN_EVENTREGISTER)
+
+#pragma warning(push)
+#pragma warning(disable:6103)
+// This function is for use by MC-generated code and should not be used directly.
+DECLSPEC_NOINLINE __inline
+ULONG __stdcall
+McGenEventRegister(
+    _In_ LPCGUID ProviderId,
+    _In_opt_ _mcgen_PENABLECALLBACK EnableCallback,
+    _In_opt_ PVOID CallbackContext,
+    _Inout_ PREGHANDLE RegHandle
+    )
+/*++
+
+Routine Description:
+
+    This function registers the provider with ETW.
+
+Arguments:
+
+    ProviderId - Provider ID to register with ETW.
+
+    EnableCallback - Callback to be used.
+
+    CallbackContext - Context for the callback.
+
+    RegHandle - Pointer to registration handle.
+
+Remarks:
+
+    Should not be called if the provider is already registered (i.e. should not
+    be called if *RegHandle != 0). Repeatedly registering a provider is a bug
+    and may indicate a race condition. However, for compatibility with previous
+    behavior, this function will return SUCCESS in this case.
+
+--*/
+{
+    ULONG Error;
+
+    if (*RegHandle != 0)
+    {
+        Error = 0; // ERROR_SUCCESS
+    }
+    else
+    {
+        Error = MCGEN_EVENTREGISTER(ProviderId, EnableCallback, CallbackContext, RegHandle);
+    }
+
+    return Error;
+}
+#pragma warning(pop)
+
+// This macro is for use by MC-generated code and should not be used directly.
+#define McGenEventUnregister _mcgen_PASTE2(McGenEventUnregister_, MCGEN_EVENTUNREGISTER)
+
+// This function is for use by MC-generated code and should not be used directly.
+DECLSPEC_NOINLINE __inline
+ULONG __stdcall
+McGenEventUnregister(_Inout_ PREGHANDLE RegHandle)
+/*++
+
+Routine Description:
+
+    Unregister from ETW and set *RegHandle = 0.
+
+Arguments:
+
+    RegHandle - the pointer to the provider registration handle
+
+Remarks:
+
+    If provider has not been registered (i.e. if *RegHandle == 0),
+    return SUCCESS. It is safe to call McGenEventUnregister even if the
+    call to McGenEventRegister returned an error.
+
+--*/
+{
+    ULONG Error;
+
+    if(*RegHandle == 0)
+    {
+        Error = 0; // ERROR_SUCCESS
+    }
+    else
+    {
+        Error = MCGEN_EVENTUNREGISTER(*RegHandle);
+        *RegHandle = (REGHANDLE)0;
+    }
+
+    return Error;
+}
+
+#endif // McGenEventRegisterUnregister
+
+#ifndef _mcgen_EVENT_BIT_SET
+  #if defined(_M_IX86) || defined(_M_X64)
+    // This macro is for use by MC-generated code and should not be used directly.
+    #define _mcgen_EVENT_BIT_SET(EnableBits, BitPosition) ((((const unsigned char*)EnableBits)[BitPosition >> 3] & (1u << (BitPosition & 7))) != 0)
+  #else // CPU type
+    // This macro is for use by MC-generated code and should not be used directly.
+    #define _mcgen_EVENT_BIT_SET(EnableBits, BitPosition) ((EnableBits[BitPosition >> 5] & (1u << (BitPosition & 31))) != 0)
+  #endif // CPU type
+#endif // _mcgen_EVENT_BIT_SET
+
+#endif // MCGEN_DISABLE_PROVIDER_CODE_GENERATION
+
+//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+// Provider "microsoft-windows-mimalloc" event count 2
+//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+// Provider GUID = 138f4dbb-ee04-4899-aa0a-572ad4475779
+EXTERN_C __declspec(selectany) const GUID ETW_MI_Provider = {0x138f4dbb, 0xee04, 0x4899, {0xaa, 0x0a, 0x57, 0x2a, 0xd4, 0x47, 0x57, 0x79}};
+
+#ifndef ETW_MI_Provider_Traits
+#define ETW_MI_Provider_Traits NULL
+#endif // ETW_MI_Provider_Traits
+
+//
+// Event Descriptors
+//
+EXTERN_C __declspec(selectany) const EVENT_DESCRIPTOR ETW_MI_ALLOC = {0x64, 0x1, 0x0, 0x4, 0x0, 0x0, 0x0};
+#define ETW_MI_ALLOC_value 0x64
+EXTERN_C __declspec(selectany) const EVENT_DESCRIPTOR ETW_MI_FREE = {0x65, 0x1, 0x0, 0x4, 0x0, 0x0, 0x0};
+#define ETW_MI_FREE_value 0x65
+
+//
+// MCGEN_DISABLE_PROVIDER_CODE_GENERATION macro:
+// Define this macro to have the compiler skip the generated functions in this
+// header.
+//
+#ifndef MCGEN_DISABLE_PROVIDER_CODE_GENERATION
+
+//
+// Event Enablement Bits
+// These variables are for use by MC-generated code and should not be used directly.
+//
+EXTERN_C __declspec(selectany) DECLSPEC_CACHEALIGN ULONG microsoft_windows_mimallocEnableBits[1];
+EXTERN_C __declspec(selectany) const ULONGLONG microsoft_windows_mimallocKeywords[1] = {0x0};
+EXTERN_C __declspec(selectany) const unsigned char microsoft_windows_mimallocLevels[1] = {4};
+
+//
+// Provider context
+//
+EXTERN_C __declspec(selectany) MCGEN_TRACE_CONTEXT ETW_MI_Provider_Context = {0, (ULONG_PTR)ETW_MI_Provider_Traits, 0, 0, 0, 0, 0, 0, 1, microsoft_windows_mimallocEnableBits, microsoft_windows_mimallocKeywords, microsoft_windows_mimallocLevels};
+
+//
+// Provider REGHANDLE
+//
+#define microsoft_windows_mimallocHandle (ETW_MI_Provider_Context.RegistrationHandle)
+
+//
+// This macro is set to 0, indicating that the EventWrite[Name] macros do not
+// have an Activity parameter. This is controlled by the -km and -um options.
+//
+#define ETW_MI_Provider_EventWriteActivity 0
+
+//
+// Register with ETW using the control GUID specified in the manifest.
+// Invoke this macro during module initialization (i.e. program startup,
+// DLL process attach, or driver load) to initialize the provider.
+// Note that if this function returns an error, the error means that
+// will not work, but no action needs to be taken -- even if EventRegister
+// returns an error, it is generally safe to use EventWrite and
+// EventUnregister macros (they will be no-ops if EventRegister failed).
+//
+#ifndef EventRegistermicrosoft_windows_mimalloc
+#define EventRegistermicrosoft_windows_mimalloc() McGenEventRegister(&ETW_MI_Provider, McGenControlCallbackV2, &ETW_MI_Provider_Context, &microsoft_windows_mimallocHandle)
+#endif
+
+//
+// Register with ETW using a specific control GUID (i.e. a GUID other than what
+// is specified in the manifest). Advanced scenarios only.
+//
+#ifndef EventRegisterByGuidmicrosoft_windows_mimalloc
+#define EventRegisterByGuidmicrosoft_windows_mimalloc(Guid) McGenEventRegister(&(Guid), McGenControlCallbackV2, &ETW_MI_Provider_Context, &microsoft_windows_mimallocHandle)
+#endif
+
+//
+// Unregister with ETW and close the provider.
+// Invoke this macro during module shutdown (i.e. program exit, DLL process
+// detach, or driver unload) to unregister the provider.
+// Note that you MUST call EventUnregister before DLL or driver unload
+// (not optional): failure to unregister a provider before DLL or driver unload
+// will result in crashes.
+//
+#ifndef EventUnregistermicrosoft_windows_mimalloc
+#define EventUnregistermicrosoft_windows_mimalloc() McGenEventUnregister(&microsoft_windows_mimallocHandle)
+#endif
+
+//
+// MCGEN_ENABLE_FORCONTEXT_CODE_GENERATION macro:
+// Define this macro to enable support for caller-allocated provider context.
+//
+#ifdef MCGEN_ENABLE_FORCONTEXT_CODE_GENERATION
+
+//
+// Advanced scenarios: Caller-allocated provider context.
+// Use when multiple differently-configured provider handles are needed,
+// e.g. for container-aware drivers, one context per container.
+//
+// Usage:
+//
+// - Caller enables the feature before including this header, e.g.
+//   #define MCGEN_ENABLE_FORCONTEXT_CODE_GENERATION 1
+// - Caller allocates memory, e.g. pContext = malloc(sizeof(McGenContext_microsoft_windows_mimalloc));
+// - Caller registers the provider, e.g. EventRegistermicrosoft_windows_mimalloc_ForContext(pContext);
+// - Caller writes events, e.g. EventWriteMyEvent_ForContext(pContext, ...);
+// - Caller unregisters, e.g. EventUnregistermicrosoft_windows_mimalloc_ForContext(pContext);
+// - Caller frees memory, e.g. free(pContext);
+//
+
+typedef struct tagMcGenContext_microsoft_windows_mimalloc {
+    // The fields of this structure are subject to change and should
+    // not be accessed directly. To access the provider's REGHANDLE,
+    // use microsoft_windows_mimallocHandle_ForContext(pContext).
+    MCGEN_TRACE_CONTEXT Context;
+    ULONG EnableBits[1];
+} McGenContext_microsoft_windows_mimalloc;
+
+#define EventRegistermicrosoft_windows_mimalloc_ForContext(pContext)             _mcgen_PASTE2(_mcgen_RegisterForContext_microsoft_windows_mimalloc_, MCGEN_EVENTREGISTER)(&ETW_MI_Provider, pContext)
+#define EventRegisterByGuidmicrosoft_windows_mimalloc_ForContext(Guid, pContext) _mcgen_PASTE2(_mcgen_RegisterForContext_microsoft_windows_mimalloc_, MCGEN_EVENTREGISTER)(&(Guid), pContext)
+#define EventUnregistermicrosoft_windows_mimalloc_ForContext(pContext)           McGenEventUnregister(&(pContext)->Context.RegistrationHandle)
+
+//
+// Provider REGHANDLE for caller-allocated context.
+//
+#define microsoft_windows_mimallocHandle_ForContext(pContext) ((pContext)->Context.RegistrationHandle)
+
+// This function is for use by MC-generated code and should not be used directly.
+// Initialize and register the caller-allocated context.
+__inline
+ULONG __stdcall
+_mcgen_PASTE2(_mcgen_RegisterForContext_microsoft_windows_mimalloc_, MCGEN_EVENTREGISTER)(
+    _In_ LPCGUID pProviderId,
+    _Out_ McGenContext_microsoft_windows_mimalloc* pContext)
+{
+    RtlZeroMemory(pContext, sizeof(*pContext));
+    pContext->Context.Logger = (ULONG_PTR)ETW_MI_Provider_Traits;
+    pContext->Context.EnableBitsCount = 1;
+    pContext->Context.EnableBitMask = pContext->EnableBits;
+    pContext->Context.EnableKeyWords = microsoft_windows_mimallocKeywords;
+    pContext->Context.EnableLevel = microsoft_windows_mimallocLevels;
+    return McGenEventRegister(
+        pProviderId,
+        McGenControlCallbackV2,
+        &pContext->Context,
+        &pContext->Context.RegistrationHandle);
+}
+
+// This function is for use by MC-generated code and should not be used directly.
+// Trigger a compile error if called with the wrong parameter type.
+FORCEINLINE
+_Ret_ McGenContext_microsoft_windows_mimalloc*
+_mcgen_CheckContextType_microsoft_windows_mimalloc(_In_ McGenContext_microsoft_windows_mimalloc* pContext)
+{
+    return pContext;
+}
+
+#endif // MCGEN_ENABLE_FORCONTEXT_CODE_GENERATION
+
+//
+// Enablement check macro for event "ETW_MI_ALLOC"
+//
+#define EventEnabledETW_MI_ALLOC() _mcgen_EVENT_BIT_SET(microsoft_windows_mimallocEnableBits, 0)
+#define EventEnabledETW_MI_ALLOC_ForContext(pContext) _mcgen_EVENT_BIT_SET(_mcgen_CheckContextType_microsoft_windows_mimalloc(pContext)->EnableBits, 0)
+
+//
+// Event write macros for event "ETW_MI_ALLOC"
+//
+#define EventWriteETW_MI_ALLOC(Address, Size) \
+        MCGEN_EVENT_ENABLED(ETW_MI_ALLOC) \
+        ? _mcgen_TEMPLATE_FOR_ETW_MI_ALLOC(&ETW_MI_Provider_Context, &ETW_MI_ALLOC, Address, Size) : 0
+#define EventWriteETW_MI_ALLOC_AssumeEnabled(Address, Size) \
+        _mcgen_TEMPLATE_FOR_ETW_MI_ALLOC(&ETW_MI_Provider_Context, &ETW_MI_ALLOC, Address, Size)
+#define EventWriteETW_MI_ALLOC_ForContext(pContext, Address, Size) \
+        MCGEN_EVENT_ENABLED_FORCONTEXT(pContext, ETW_MI_ALLOC) \
+        ? _mcgen_TEMPLATE_FOR_ETW_MI_ALLOC(&(pContext)->Context, &ETW_MI_ALLOC, Address, Size) : 0
+#define EventWriteETW_MI_ALLOC_ForContextAssumeEnabled(pContext, Address, Size) \
+        _mcgen_TEMPLATE_FOR_ETW_MI_ALLOC(&_mcgen_CheckContextType_microsoft_windows_mimalloc(pContext)->Context, &ETW_MI_ALLOC, Address, Size)
+
+// This macro is for use by MC-generated code and should not be used directly.
+#define _mcgen_TEMPLATE_FOR_ETW_MI_ALLOC _mcgen_PASTE2(McTemplateU0xx_, MCGEN_EVENTWRITETRANSFER)
+
+//
+// Enablement check macro for event "ETW_MI_FREE"
+//
+#define EventEnabledETW_MI_FREE() _mcgen_EVENT_BIT_SET(microsoft_windows_mimallocEnableBits, 0)
+#define EventEnabledETW_MI_FREE_ForContext(pContext) _mcgen_EVENT_BIT_SET(_mcgen_CheckContextType_microsoft_windows_mimalloc(pContext)->EnableBits, 0)
+
+//
+// Event write macros for event "ETW_MI_FREE"
+//
+#define EventWriteETW_MI_FREE(Address, Size) \
+        MCGEN_EVENT_ENABLED(ETW_MI_FREE) \
+        ? _mcgen_TEMPLATE_FOR_ETW_MI_FREE(&ETW_MI_Provider_Context, &ETW_MI_FREE, Address, Size) : 0
+#define EventWriteETW_MI_FREE_AssumeEnabled(Address, Size) \
+        _mcgen_TEMPLATE_FOR_ETW_MI_FREE(&ETW_MI_Provider_Context, &ETW_MI_FREE, Address, Size)
+#define EventWriteETW_MI_FREE_ForContext(pContext, Address, Size) \
+        MCGEN_EVENT_ENABLED_FORCONTEXT(pContext, ETW_MI_FREE) \
+        ? _mcgen_TEMPLATE_FOR_ETW_MI_FREE(&(pContext)->Context, &ETW_MI_FREE, Address, Size) : 0
+#define EventWriteETW_MI_FREE_ForContextAssumeEnabled(pContext, Address, Size) \
+        _mcgen_TEMPLATE_FOR_ETW_MI_FREE(&_mcgen_CheckContextType_microsoft_windows_mimalloc(pContext)->Context, &ETW_MI_FREE, Address, Size)
+
+// This macro is for use by MC-generated code and should not be used directly.
+#define _mcgen_TEMPLATE_FOR_ETW_MI_FREE _mcgen_PASTE2(McTemplateU0xx_, MCGEN_EVENTWRITETRANSFER)
+
+#endif // MCGEN_DISABLE_PROVIDER_CODE_GENERATION
+
+//
+// MCGEN_DISABLE_PROVIDER_CODE_GENERATION macro:
+// Define this macro to have the compiler skip the generated functions in this
+// header.
+//
+#ifndef MCGEN_DISABLE_PROVIDER_CODE_GENERATION
+
+//
+// Template Functions
+//
+
+//
+// Function for template "ETW_CUSTOM_HEAP_ALLOC_DATA" (and possibly others).
+// This function is for use by MC-generated code and should not be used directly.
+//
+#ifndef McTemplateU0xx_def
+#define McTemplateU0xx_def
+ETW_INLINE
+ULONG
+_mcgen_PASTE2(McTemplateU0xx_, MCGEN_EVENTWRITETRANSFER)(
+    _In_ PMCGEN_TRACE_CONTEXT Context,
+    _In_ PCEVENT_DESCRIPTOR Descriptor,
+    _In_ const unsigned __int64  _Arg0,
+    _In_ const unsigned __int64  _Arg1
+    )
+{
+#define McTemplateU0xx_ARGCOUNT 2
+
+    EVENT_DATA_DESCRIPTOR EventData[McTemplateU0xx_ARGCOUNT + 1];
+
+    EventDataDescCreate(&EventData[1],&_Arg0, sizeof(const unsigned __int64)  );
+
+    EventDataDescCreate(&EventData[2],&_Arg1, sizeof(const unsigned __int64)  );
+
+    return McGenEventWrite(Context, Descriptor, NULL, McTemplateU0xx_ARGCOUNT + 1, EventData);
+}
+#endif // McTemplateU0xx_def
+
+#endif // MCGEN_DISABLE_PROVIDER_CODE_GENERATION
+
+#if defined(__cplusplus)
+}
+#endif
diff --git a/Objects/mimalloc/prim/windows/etw.man b/Objects/mimalloc/prim/windows/etw.man
new file mode 100644
index 00000000000000..cfd1f8a9eaacd5
Binary files /dev/null and b/Objects/mimalloc/prim/windows/etw.man differ
diff --git a/Objects/mimalloc/prim/windows/prim.c b/Objects/mimalloc/prim/windows/prim.c
new file mode 100644
index 00000000000000..a038277ad21cb0
--- /dev/null
+++ b/Objects/mimalloc/prim/windows/prim.c
@@ -0,0 +1,622 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// This file is included in `src/prim/prim.c`
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"
+#include <stdio.h>   // fputs, stderr
+
+
+//---------------------------------------------
+// Dynamically bind Windows API points for portability
+//---------------------------------------------
+
+// We use VirtualAlloc2 for aligned allocation, but it is only supported on Windows 10 and Windows Server 2016.
+// So, we need to look it up dynamically to run on older systems. (use __stdcall for 32-bit compatibility)
+// NtAllocateVirtualAllocEx is used for huge OS page allocation (1GiB)
+// We define a minimal MEM_EXTENDED_PARAMETER ourselves in order to be able to compile with older SDK's.
+typedef enum MI_MEM_EXTENDED_PARAMETER_TYPE_E {
+  MiMemExtendedParameterInvalidType = 0,
+  MiMemExtendedParameterAddressRequirements,
+  MiMemExtendedParameterNumaNode,
+  MiMemExtendedParameterPartitionHandle,
+  MiMemExtendedParameterUserPhysicalHandle,
+  MiMemExtendedParameterAttributeFlags,
+  MiMemExtendedParameterMax
+} MI_MEM_EXTENDED_PARAMETER_TYPE;
+
+typedef struct DECLSPEC_ALIGN(8) MI_MEM_EXTENDED_PARAMETER_S {
+  struct { DWORD64 Type : 8; DWORD64 Reserved : 56; } Type;
+  union  { DWORD64 ULong64; PVOID Pointer; SIZE_T Size; HANDLE Handle; DWORD ULong; } Arg;
+} MI_MEM_EXTENDED_PARAMETER;
+
+typedef struct MI_MEM_ADDRESS_REQUIREMENTS_S {
+  PVOID  LowestStartingAddress;
+  PVOID  HighestEndingAddress;
+  SIZE_T Alignment;
+} MI_MEM_ADDRESS_REQUIREMENTS;
+
+#define MI_MEM_EXTENDED_PARAMETER_NONPAGED_HUGE   0x00000010
+
+#include <winternl.h>
+typedef PVOID    (__stdcall *PVirtualAlloc2)(HANDLE, PVOID, SIZE_T, ULONG, ULONG, MI_MEM_EXTENDED_PARAMETER*, ULONG);
+typedef NTSTATUS (__stdcall *PNtAllocateVirtualMemoryEx)(HANDLE, PVOID*, SIZE_T*, ULONG, ULONG, MI_MEM_EXTENDED_PARAMETER*, ULONG);
+static PVirtualAlloc2 pVirtualAlloc2 = NULL;
+static PNtAllocateVirtualMemoryEx pNtAllocateVirtualMemoryEx = NULL;
+
+// Similarly, GetNumaProcesorNodeEx is only supported since Windows 7
+typedef struct MI_PROCESSOR_NUMBER_S { WORD Group; BYTE Number; BYTE Reserved; } MI_PROCESSOR_NUMBER;
+
+typedef VOID (__stdcall *PGetCurrentProcessorNumberEx)(MI_PROCESSOR_NUMBER* ProcNumber);
+typedef BOOL (__stdcall *PGetNumaProcessorNodeEx)(MI_PROCESSOR_NUMBER* Processor, PUSHORT NodeNumber);
+typedef BOOL (__stdcall* PGetNumaNodeProcessorMaskEx)(USHORT Node, PGROUP_AFFINITY ProcessorMask);
+typedef BOOL (__stdcall *PGetNumaProcessorNode)(UCHAR Processor, PUCHAR NodeNumber);
+static PGetCurrentProcessorNumberEx pGetCurrentProcessorNumberEx = NULL;
+static PGetNumaProcessorNodeEx      pGetNumaProcessorNodeEx = NULL;
+static PGetNumaNodeProcessorMaskEx  pGetNumaNodeProcessorMaskEx = NULL;
+static PGetNumaProcessorNode        pGetNumaProcessorNode = NULL;
+
+//---------------------------------------------
+// Enable large page support dynamically (if possible)
+//---------------------------------------------
+
+static bool win_enable_large_os_pages(size_t* large_page_size)
+{
+  static bool large_initialized = false;
+  if (large_initialized) return (_mi_os_large_page_size() > 0);
+  large_initialized = true;
+
+  // Try to see if large OS pages are supported
+  // To use large pages on Windows, we first need access permission
+  // Set "Lock pages in memory" permission in the group policy editor
+  // <https://devblogs.microsoft.com/oldnewthing/20110128-00/?p=11643>
+  unsigned long err = 0;
+  HANDLE token = NULL;
+  BOOL ok = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token);
+  if (ok) {
+    TOKEN_PRIVILEGES tp;
+    ok = LookupPrivilegeValue(NULL, TEXT("SeLockMemoryPrivilege"), &tp.Privileges[0].Luid);
+    if (ok) {
+      tp.PrivilegeCount = 1;
+      tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+      ok = AdjustTokenPrivileges(token, FALSE, &tp, 0, (PTOKEN_PRIVILEGES)NULL, 0);
+      if (ok) {
+        err = GetLastError();
+        ok = (err == ERROR_SUCCESS);
+        if (ok && large_page_size != NULL) {
+          *large_page_size = GetLargePageMinimum();
+        }
+      }
+    }
+    CloseHandle(token);
+  }
+  if (!ok) {
+    if (err == 0) err = GetLastError();
+    _mi_warning_message("cannot enable large OS page support, error %lu\n", err);
+  }
+  return (ok!=0);
+}
+
+
+//---------------------------------------------
+// Initialize
+//---------------------------------------------
+
+void _mi_prim_mem_init( mi_os_mem_config_t* config )
+{
+  config->has_overcommit = false;
+  config->must_free_whole = true;
+  config->has_virtual_reserve = true;
+  // get the page size
+  SYSTEM_INFO si;
+  GetSystemInfo(&si);
+  if (si.dwPageSize > 0) { config->page_size = si.dwPageSize; }
+  if (si.dwAllocationGranularity > 0) { config->alloc_granularity = si.dwAllocationGranularity; }
+  // get the VirtualAlloc2 function
+  HINSTANCE  hDll;
+  hDll = LoadLibrary(TEXT("kernelbase.dll"));
+  if (hDll != NULL) {
+    // use VirtualAlloc2FromApp if possible as it is available to Windows store apps
+    pVirtualAlloc2 = (PVirtualAlloc2)(void (*)(void))GetProcAddress(hDll, "VirtualAlloc2FromApp");
+    if (pVirtualAlloc2==NULL) pVirtualAlloc2 = (PVirtualAlloc2)(void (*)(void))GetProcAddress(hDll, "VirtualAlloc2");
+    FreeLibrary(hDll);
+  }
+  // NtAllocateVirtualMemoryEx is used for huge page allocation
+  hDll = LoadLibrary(TEXT("ntdll.dll"));
+  if (hDll != NULL) {
+    pNtAllocateVirtualMemoryEx = (PNtAllocateVirtualMemoryEx)(void (*)(void))GetProcAddress(hDll, "NtAllocateVirtualMemoryEx");
+    FreeLibrary(hDll);
+  }
+  // Try to use Win7+ numa API
+  hDll = LoadLibrary(TEXT("kernel32.dll"));
+  if (hDll != NULL) {
+    pGetCurrentProcessorNumberEx = (PGetCurrentProcessorNumberEx)(void (*)(void))GetProcAddress(hDll, "GetCurrentProcessorNumberEx");
+    pGetNumaProcessorNodeEx = (PGetNumaProcessorNodeEx)(void (*)(void))GetProcAddress(hDll, "GetNumaProcessorNodeEx");
+    pGetNumaNodeProcessorMaskEx = (PGetNumaNodeProcessorMaskEx)(void (*)(void))GetProcAddress(hDll, "GetNumaNodeProcessorMaskEx");
+    pGetNumaProcessorNode = (PGetNumaProcessorNode)(void (*)(void))GetProcAddress(hDll, "GetNumaProcessorNode");
+    FreeLibrary(hDll);
+  }
+  if (mi_option_is_enabled(mi_option_allow_large_os_pages) || mi_option_is_enabled(mi_option_reserve_huge_os_pages)) {
+    win_enable_large_os_pages(&config->large_page_size);
+  }
+}
+
+
+//---------------------------------------------
+// Free
+//---------------------------------------------
+
+int _mi_prim_free(void* addr, size_t size ) {
+  MI_UNUSED(size);
+  DWORD errcode = 0;
+  bool err = (VirtualFree(addr, 0, MEM_RELEASE) == 0);
+  if (err) { errcode = GetLastError(); }
+  if (errcode == ERROR_INVALID_ADDRESS) {
+    // In mi_os_mem_alloc_aligned the fallback path may have returned a pointer inside
+    // the memory region returned by VirtualAlloc; in that case we need to free using
+    // the start of the region.
+    MEMORY_BASIC_INFORMATION info = { 0 };
+    VirtualQuery(addr, &info, sizeof(info));
+    if (info.AllocationBase < addr && ((uint8_t*)addr - (uint8_t*)info.AllocationBase) < (ptrdiff_t)MI_SEGMENT_SIZE) {
+      errcode = 0;
+      err = (VirtualFree(info.AllocationBase, 0, MEM_RELEASE) == 0);
+      if (err) { errcode = GetLastError(); }
+    }
+  }
+  return (int)errcode;
+}
+
+
+//---------------------------------------------
+// VirtualAlloc
+//---------------------------------------------
+
+static void* win_virtual_alloc_prim(void* addr, size_t size, size_t try_alignment, DWORD flags) {
+  #if (MI_INTPTR_SIZE >= 8)
+  // on 64-bit systems, try to use the virtual address area after 2TiB for 4MiB aligned allocations
+  if (addr == NULL) {
+    void* hint = _mi_os_get_aligned_hint(try_alignment,size);
+    if (hint != NULL) {
+      void* p = VirtualAlloc(hint, size, flags, PAGE_READWRITE);
+      if (p != NULL) return p;
+      _mi_verbose_message("warning: unable to allocate hinted aligned OS memory (%zu bytes, error code: 0x%x, address: %p, alignment: %zu, flags: 0x%x)\n", size, GetLastError(), hint, try_alignment, flags);
+      // fall through on error
+    }
+  }
+  #endif
+  // on modern Windows try use VirtualAlloc2 for aligned allocation
+  if (try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0 && pVirtualAlloc2 != NULL) {
+    MI_MEM_ADDRESS_REQUIREMENTS reqs = { 0, 0, 0 };
+    reqs.Alignment = try_alignment;
+    MI_MEM_EXTENDED_PARAMETER param = { {0, 0}, {0} };
+    param.Type.Type = MiMemExtendedParameterAddressRequirements;
+    param.Arg.Pointer = &reqs;
+    void* p = (*pVirtualAlloc2)(GetCurrentProcess(), addr, size, flags, PAGE_READWRITE, &param, 1);
+    if (p != NULL) return p;
+    _mi_warning_message("unable to allocate aligned OS memory (%zu bytes, error code: 0x%x, address: %p, alignment: %zu, flags: 0x%x)\n", size, GetLastError(), addr, try_alignment, flags);
+    // fall through on error
+  }
+  // last resort
+  return VirtualAlloc(addr, size, flags, PAGE_READWRITE);
+}
+
+static void* win_virtual_alloc(void* addr, size_t size, size_t try_alignment, DWORD flags, bool large_only, bool allow_large, bool* is_large) {
+  mi_assert_internal(!(large_only && !allow_large));
+  static _Atomic(size_t) large_page_try_ok; // = 0;
+  void* p = NULL;
+  // Try to allocate large OS pages (2MiB) if allowed or required.
+  if ((large_only || _mi_os_use_large_page(size, try_alignment))
+      && allow_large && (flags&MEM_COMMIT)!=0 && (flags&MEM_RESERVE)!=0) {
+    size_t try_ok = mi_atomic_load_acquire(&large_page_try_ok);
+    if (!large_only && try_ok > 0) {
+      // if a large page allocation fails, it seems the calls to VirtualAlloc get very expensive.
+      // therefore, once a large page allocation failed, we don't try again for `large_page_try_ok` times.
+      mi_atomic_cas_strong_acq_rel(&large_page_try_ok, &try_ok, try_ok - 1);
+    }
+    else {
+      // large OS pages must always reserve and commit.
+      *is_large = true;
+      p = win_virtual_alloc_prim(addr, size, try_alignment, flags | MEM_LARGE_PAGES);
+      if (large_only) return p;
+      // fall back to non-large page allocation on error (`p == NULL`).
+      if (p == NULL) {
+        mi_atomic_store_release(&large_page_try_ok,10UL);  // on error, don't try again for the next N allocations
+      }
+    }
+  }
+  // Fall back to regular page allocation
+  if (p == NULL) {
+    *is_large = ((flags&MEM_LARGE_PAGES) != 0);
+    p = win_virtual_alloc_prim(addr, size, try_alignment, flags);
+  }
+  //if (p == NULL) { _mi_warning_message("unable to allocate OS memory (%zu bytes, error code: 0x%x, address: %p, alignment: %zu, flags: 0x%x, large only: %d, allow large: %d)\n", size, GetLastError(), addr, try_alignment, flags, large_only, allow_large); }
+  return p;
+}
+
+int _mi_prim_alloc(size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, void** addr) {
+  mi_assert_internal(size > 0 && (size % _mi_os_page_size()) == 0);
+  mi_assert_internal(commit || !allow_large);
+  mi_assert_internal(try_alignment > 0);
+  *is_zero = true;
+  int flags = MEM_RESERVE;
+  if (commit) { flags |= MEM_COMMIT; }
+  *addr = win_virtual_alloc(NULL, size, try_alignment, flags, false, allow_large, is_large);
+  return (*addr != NULL ? 0 : (int)GetLastError());
+}
+
+
+//---------------------------------------------
+// Commit/Reset/Protect
+//---------------------------------------------
+#ifdef _MSC_VER
+#pragma warning(disable:6250)   // suppress warning calling VirtualFree without MEM_RELEASE (for decommit)
+#endif
+
+int _mi_prim_commit(void* addr, size_t size, bool* is_zero) {
+  *is_zero = false;
+  /*
+  // zero'ing only happens on an initial commit... but checking upfront seems expensive..
+  _MEMORY_BASIC_INFORMATION meminfo; _mi_memzero_var(meminfo);
+  if (VirtualQuery(addr, &meminfo, size) > 0) {
+    if ((meminfo.State & MEM_COMMIT) == 0) {
+      *is_zero = true;
+    }
+  }
+  */
+  // commit
+  void* p = VirtualAlloc(addr, size, MEM_COMMIT, PAGE_READWRITE);
+  if (p == NULL) return (int)GetLastError();
+  return 0;
+}
+
+int _mi_prim_decommit(void* addr, size_t size, bool* needs_recommit) {
+  BOOL ok = VirtualFree(addr, size, MEM_DECOMMIT);
+  *needs_recommit = true;  // for safety, assume always decommitted even in the case of an error.
+  return (ok ? 0 : (int)GetLastError());
+}
+
+int _mi_prim_reset(void* addr, size_t size) {
+  void* p = VirtualAlloc(addr, size, MEM_RESET, PAGE_READWRITE);
+  mi_assert_internal(p == addr);
+  #if 0
+  if (p != NULL) {
+    VirtualUnlock(addr,size); // VirtualUnlock after MEM_RESET removes the memory directly from the working set
+  }
+  #endif
+  return (p != NULL ? 0 : (int)GetLastError());
+}
+
+int _mi_prim_protect(void* addr, size_t size, bool protect) {
+  DWORD oldprotect = 0;
+  BOOL ok = VirtualProtect(addr, size, protect ? PAGE_NOACCESS : PAGE_READWRITE, &oldprotect);
+  return (ok ? 0 : (int)GetLastError());
+}
+
+
+//---------------------------------------------
+// Huge page allocation
+//---------------------------------------------
+
+static void* _mi_prim_alloc_huge_os_pagesx(void* hint_addr, size_t size, int numa_node)
+{
+  const DWORD flags = MEM_LARGE_PAGES | MEM_COMMIT | MEM_RESERVE;
+
+  win_enable_large_os_pages(NULL);
+
+  MI_MEM_EXTENDED_PARAMETER params[3] = { {{0,0},{0}},{{0,0},{0}},{{0,0},{0}} };
+  // on modern Windows try use NtAllocateVirtualMemoryEx for 1GiB huge pages
+  static bool mi_huge_pages_available = true;
+  if (pNtAllocateVirtualMemoryEx != NULL && mi_huge_pages_available) {
+    params[0].Type.Type = MiMemExtendedParameterAttributeFlags;
+    params[0].Arg.ULong64 = MI_MEM_EXTENDED_PARAMETER_NONPAGED_HUGE;
+    ULONG param_count = 1;
+    if (numa_node >= 0) {
+      param_count++;
+      params[1].Type.Type = MiMemExtendedParameterNumaNode;
+      params[1].Arg.ULong = (unsigned)numa_node;
+    }
+    SIZE_T psize = size;
+    void* base = hint_addr;
+    NTSTATUS err = (*pNtAllocateVirtualMemoryEx)(GetCurrentProcess(), &base, &psize, flags, PAGE_READWRITE, params, param_count);
+    if (err == 0 && base != NULL) {
+      return base;
+    }
+    else {
+      // fall back to regular large pages
+      mi_huge_pages_available = false; // don't try further huge pages
+      _mi_warning_message("unable to allocate using huge (1GiB) pages, trying large (2MiB) pages instead (status 0x%lx)\n", err);
+    }
+  }
+  // on modern Windows try use VirtualAlloc2 for numa aware large OS page allocation
+  if (pVirtualAlloc2 != NULL && numa_node >= 0) {
+    params[0].Type.Type = MiMemExtendedParameterNumaNode;
+    params[0].Arg.ULong = (unsigned)numa_node;
+    return (*pVirtualAlloc2)(GetCurrentProcess(), hint_addr, size, flags, PAGE_READWRITE, params, 1);
+  }
+
+  // otherwise use regular virtual alloc on older windows
+  return VirtualAlloc(hint_addr, size, flags, PAGE_READWRITE);
+}
+
+int _mi_prim_alloc_huge_os_pages(void* hint_addr, size_t size, int numa_node, bool* is_zero, void** addr) {
+  *is_zero = true;
+  *addr = _mi_prim_alloc_huge_os_pagesx(hint_addr,size,numa_node);
+  return (*addr != NULL ? 0 : (int)GetLastError());
+}
+
+
+//---------------------------------------------
+// Numa nodes
+//---------------------------------------------
+
+size_t _mi_prim_numa_node(void) {
+  USHORT numa_node = 0;
+  if (pGetCurrentProcessorNumberEx != NULL && pGetNumaProcessorNodeEx != NULL) {
+    // Extended API is supported
+    MI_PROCESSOR_NUMBER pnum;
+    (*pGetCurrentProcessorNumberEx)(&pnum);
+    USHORT nnode = 0;
+    BOOL ok = (*pGetNumaProcessorNodeEx)(&pnum, &nnode);
+    if (ok) { numa_node = nnode; }
+  }
+  else if (pGetNumaProcessorNode != NULL) {
+    // Vista or earlier, use older API that is limited to 64 processors. Issue #277
+    DWORD pnum = GetCurrentProcessorNumber();
+    UCHAR nnode = 0;
+    BOOL ok = pGetNumaProcessorNode((UCHAR)pnum, &nnode);
+    if (ok) { numa_node = nnode; }
+  }
+  return numa_node;
+}
+
+size_t _mi_prim_numa_node_count(void) {
+  ULONG numa_max = 0;
+  GetNumaHighestNodeNumber(&numa_max);
+  // find the highest node number that has actual processors assigned to it. Issue #282
+  while(numa_max > 0) {
+    if (pGetNumaNodeProcessorMaskEx != NULL) {
+      // Extended API is supported
+      GROUP_AFFINITY affinity;
+      if ((*pGetNumaNodeProcessorMaskEx)((USHORT)numa_max, &affinity)) {
+        if (affinity.Mask != 0) break;  // found the maximum non-empty node
+      }
+    }
+    else {
+      // Vista or earlier, use older API that is limited to 64 processors.
+      ULONGLONG mask;
+      if (GetNumaNodeProcessorMask((UCHAR)numa_max, &mask)) {
+        if (mask != 0) break; // found the maximum non-empty node
+      };
+    }
+    // max node was invalid or had no processor assigned, try again
+    numa_max--;
+  }
+  return ((size_t)numa_max + 1);
+}
+
+
+//----------------------------------------------------------------
+// Clock
+//----------------------------------------------------------------
+
+static mi_msecs_t mi_to_msecs(LARGE_INTEGER t) {
+  static LARGE_INTEGER mfreq; // = 0
+  if (mfreq.QuadPart == 0LL) {
+    LARGE_INTEGER f;
+    QueryPerformanceFrequency(&f);
+    mfreq.QuadPart = f.QuadPart/1000LL;
+    if (mfreq.QuadPart == 0) mfreq.QuadPart = 1;
+  }
+  return (mi_msecs_t)(t.QuadPart / mfreq.QuadPart);
+}
+
+mi_msecs_t _mi_prim_clock_now(void) {
+  LARGE_INTEGER t;
+  QueryPerformanceCounter(&t);
+  return mi_to_msecs(t);
+}
+
+
+//----------------------------------------------------------------
+// Process Info
+//----------------------------------------------------------------
+
+#include <windows.h>
+#include <psapi.h>
+
+static mi_msecs_t filetime_msecs(const FILETIME* ftime) {
+  ULARGE_INTEGER i;
+  i.LowPart = ftime->dwLowDateTime;
+  i.HighPart = ftime->dwHighDateTime;
+  mi_msecs_t msecs = (i.QuadPart / 10000); // FILETIME is in 100 nano seconds
+  return msecs;
+}
+
+typedef BOOL (WINAPI *PGetProcessMemoryInfo)(HANDLE, PPROCESS_MEMORY_COUNTERS, DWORD);
+static PGetProcessMemoryInfo pGetProcessMemoryInfo = NULL;
+
+void _mi_prim_process_info(mi_process_info_t* pinfo)
+{
+  FILETIME ct;
+  FILETIME ut;
+  FILETIME st;
+  FILETIME et;
+  GetProcessTimes(GetCurrentProcess(), &ct, &et, &st, &ut);
+  pinfo->utime = filetime_msecs(&ut);
+  pinfo->stime = filetime_msecs(&st);
+
+  // load psapi on demand
+  if (pGetProcessMemoryInfo == NULL) {
+    HINSTANCE hDll = LoadLibrary(TEXT("psapi.dll"));
+    if (hDll != NULL) {
+      pGetProcessMemoryInfo = (PGetProcessMemoryInfo)(void (*)(void))GetProcAddress(hDll, "GetProcessMemoryInfo");
+    }
+  }
+
+  // get process info
+  PROCESS_MEMORY_COUNTERS info;
+  memset(&info, 0, sizeof(info));
+  if (pGetProcessMemoryInfo != NULL) {
+    pGetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info));
+  }
+  pinfo->current_rss    = (size_t)info.WorkingSetSize;
+  pinfo->peak_rss       = (size_t)info.PeakWorkingSetSize;
+  pinfo->current_commit = (size_t)info.PagefileUsage;
+  pinfo->peak_commit    = (size_t)info.PeakPagefileUsage;
+  pinfo->page_faults    = (size_t)info.PageFaultCount;
+}
+
+//----------------------------------------------------------------
+// Output
+//----------------------------------------------------------------
+
+void _mi_prim_out_stderr( const char* msg )
+{
+  // on windows with redirection, the C runtime cannot handle locale dependent output
+  // after the main thread closes so we use direct console output.
+  if (!_mi_preloading()) {
+    // _cputs(msg);  // _cputs cannot be used at is aborts if it fails to lock the console
+    static HANDLE hcon = INVALID_HANDLE_VALUE;
+    static bool hconIsConsole;
+    if (hcon == INVALID_HANDLE_VALUE) {
+      CONSOLE_SCREEN_BUFFER_INFO sbi;
+      hcon = GetStdHandle(STD_ERROR_HANDLE);
+      hconIsConsole = ((hcon != INVALID_HANDLE_VALUE) && GetConsoleScreenBufferInfo(hcon, &sbi));
+    }
+    const size_t len = _mi_strlen(msg);
+    if (len > 0 && len < UINT32_MAX) {
+      DWORD written = 0;
+      if (hconIsConsole) {
+        WriteConsoleA(hcon, msg, (DWORD)len, &written, NULL);
+      }
+      else if (hcon != INVALID_HANDLE_VALUE) {
+        // use direct write if stderr was redirected
+        WriteFile(hcon, msg, (DWORD)len, &written, NULL);
+      }
+      else {
+        // finally fall back to fputs after all
+        fputs(msg, stderr);
+      }
+    }
+  }
+}
+
+
+//----------------------------------------------------------------
+// Environment
+//----------------------------------------------------------------
+
+// On Windows use GetEnvironmentVariable instead of getenv to work
+// reliably even when this is invoked before the C runtime is initialized.
+// i.e. when `_mi_preloading() == true`.
+// Note: on windows, environment names are not case sensitive.
+bool _mi_prim_getenv(const char* name, char* result, size_t result_size) {
+  result[0] = 0;
+  size_t len = GetEnvironmentVariableA(name, result, (DWORD)result_size);
+  return (len > 0 && len < result_size);
+}
+
+
+
+//----------------------------------------------------------------
+// Random
+//----------------------------------------------------------------
+
+#if defined(MI_USE_RTLGENRANDOM) // || defined(__cplusplus)
+// We prefer to use BCryptGenRandom instead of (the unofficial) RtlGenRandom but when using
+// dynamic overriding, we observed it can raise an exception when compiled with C++, and
+// sometimes deadlocks when also running under the VS debugger.
+// In contrast, issue #623 implies that on Windows Server 2019 we need to use BCryptGenRandom.
+// To be continued..
+#pragma comment (lib,"advapi32.lib")
+#define RtlGenRandom  SystemFunction036
+mi_decl_externc BOOLEAN NTAPI RtlGenRandom(PVOID RandomBuffer, ULONG RandomBufferLength);
+
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  return (RtlGenRandom(buf, (ULONG)buf_len) != 0);
+}
+
+#else
+
+#ifndef BCRYPT_USE_SYSTEM_PREFERRED_RNG
+#define BCRYPT_USE_SYSTEM_PREFERRED_RNG 0x00000002
+#endif
+
+typedef LONG (NTAPI *PBCryptGenRandom)(HANDLE, PUCHAR, ULONG, ULONG);
+static  PBCryptGenRandom pBCryptGenRandom = NULL;
+
+bool _mi_prim_random_buf(void* buf, size_t buf_len) {
+  if (pBCryptGenRandom == NULL) {
+    HINSTANCE hDll = LoadLibrary(TEXT("bcrypt.dll"));
+    if (hDll != NULL) {
+      pBCryptGenRandom = (PBCryptGenRandom)(void (*)(void))GetProcAddress(hDll, "BCryptGenRandom");
+    }
+    if (pBCryptGenRandom == NULL) return false;
+  }
+  return (pBCryptGenRandom(NULL, (PUCHAR)buf, (ULONG)buf_len, BCRYPT_USE_SYSTEM_PREFERRED_RNG) >= 0);
+}
+
+#endif  // MI_USE_RTLGENRANDOM
+
+//----------------------------------------------------------------
+// Thread init/done
+//----------------------------------------------------------------
+
+#if !defined(MI_SHARED_LIB)
+
+// use thread local storage keys to detect thread ending
+#include <fibersapi.h>
+#if (_WIN32_WINNT < 0x600)  // before Windows Vista
+WINBASEAPI DWORD WINAPI FlsAlloc( _In_opt_ PFLS_CALLBACK_FUNCTION lpCallback );
+WINBASEAPI PVOID WINAPI FlsGetValue( _In_ DWORD dwFlsIndex );
+WINBASEAPI BOOL  WINAPI FlsSetValue( _In_ DWORD dwFlsIndex, _In_opt_ PVOID lpFlsData );
+WINBASEAPI BOOL  WINAPI FlsFree(_In_ DWORD dwFlsIndex);
+#endif
+
+static DWORD mi_fls_key = (DWORD)(-1);
+
+static void NTAPI mi_fls_done(PVOID value) {
+  mi_heap_t* heap = (mi_heap_t*)value;
+  if (heap != NULL) {
+    _mi_thread_done(heap);
+    FlsSetValue(mi_fls_key, NULL);  // prevent recursion as _mi_thread_done may set it back to the main heap, issue #672
+  }
+}
+
+void _mi_prim_thread_init_auto_done(void) {
+  mi_fls_key = FlsAlloc(&mi_fls_done);
+}
+
+void _mi_prim_thread_done_auto_done(void) {
+  // call thread-done on all threads (except the main thread) to prevent
+  // dangling callback pointer if statically linked with a DLL; Issue #208
+  FlsFree(mi_fls_key);
+}
+
+void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
+  mi_assert_internal(mi_fls_key != (DWORD)(-1));
+  FlsSetValue(mi_fls_key, heap);
+}
+
+#else
+
+// Dll; nothing to do as in that case thread_done is handled through the DLL_THREAD_DETACH event.
+
+void _mi_prim_thread_init_auto_done(void) {
+}
+
+void _mi_prim_thread_done_auto_done(void) {
+}
+
+void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
+  MI_UNUSED(heap);
+}
+
+#endif
diff --git a/Objects/mimalloc/prim/windows/readme.md b/Objects/mimalloc/prim/windows/readme.md
new file mode 100644
index 00000000000000..217c3d174db473
--- /dev/null
+++ b/Objects/mimalloc/prim/windows/readme.md
@@ -0,0 +1,17 @@
+## Primitives:
+
+- `prim.c` contains Windows primitives for OS allocation.
+
+## Event Tracing for Windows (ETW)
+
+- `etw.h` is generated from `etw.man` which contains the manifest for mimalloc events.
+  (100 is an allocation, 101 is for a free)
+
+- `etw-mimalloc.wprp` is a profile for the Windows Performance Recorder (WPR).
+  In an admin prompt, you can use:
+  ```
+  > wpr -start src\prim\windows\etw-mimalloc.wprp -filemode
+  > <my mimalloc program>
+  > wpr -stop test.etl
+  ``` 
+  and then open `test.etl` in the Windows Performance Analyzer (WPA).
\ No newline at end of file
diff --git a/Objects/mimalloc/random.c b/Objects/mimalloc/random.c
new file mode 100644
index 00000000000000..35a0633a800d6c
--- /dev/null
+++ b/Objects/mimalloc/random.c
@@ -0,0 +1,254 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2019-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/prim.h"    // _mi_prim_random_buf
+#include <string.h>       // memset
+
+/* ----------------------------------------------------------------------------
+We use our own PRNG to keep predictable performance of random number generation
+and to avoid implementations that use a lock. We only use the OS provided
+random source to initialize the initial seeds. Since we do not need ultimate
+performance but we do rely on the security (for secret cookies in secure mode)
+we use a cryptographically secure generator (chacha20).
+-----------------------------------------------------------------------------*/
+
+#define MI_CHACHA_ROUNDS (20)   // perhaps use 12 for better performance?
+
+
+/* ----------------------------------------------------------------------------
+Chacha20 implementation as the original algorithm with a 64-bit nonce
+and counter: https://en.wikipedia.org/wiki/Salsa20
+The input matrix has sixteen 32-bit values:
+Position  0 to  3: constant key
+Position  4 to 11: the key
+Position 12 to 13: the counter.
+Position 14 to 15: the nonce.
+
+The implementation uses regular C code which compiles very well on modern compilers.
+(gcc x64 has no register spills, and clang 6+ uses SSE instructions)
+-----------------------------------------------------------------------------*/
+
+static inline uint32_t rotl(uint32_t x, uint32_t shift) {
+  return (x << shift) | (x >> (32 - shift));
+}
+
+static inline void qround(uint32_t x[16], size_t a, size_t b, size_t c, size_t d) {
+  x[a] += x[b]; x[d] = rotl(x[d] ^ x[a], 16);
+  x[c] += x[d]; x[b] = rotl(x[b] ^ x[c], 12);
+  x[a] += x[b]; x[d] = rotl(x[d] ^ x[a], 8);
+  x[c] += x[d]; x[b] = rotl(x[b] ^ x[c], 7);
+}
+
+static void chacha_block(mi_random_ctx_t* ctx)
+{
+  // scramble into `x`
+  uint32_t x[16];
+  for (size_t i = 0; i < 16; i++) {
+    x[i] = ctx->input[i];
+  }
+  for (size_t i = 0; i < MI_CHACHA_ROUNDS; i += 2) {
+    qround(x, 0, 4,  8, 12);
+    qround(x, 1, 5,  9, 13);
+    qround(x, 2, 6, 10, 14);
+    qround(x, 3, 7, 11, 15);
+    qround(x, 0, 5, 10, 15);
+    qround(x, 1, 6, 11, 12);
+    qround(x, 2, 7,  8, 13);
+    qround(x, 3, 4,  9, 14);
+  }
+
+  // add scrambled data to the initial state
+  for (size_t i = 0; i < 16; i++) {
+    ctx->output[i] = x[i] + ctx->input[i];
+  }
+  ctx->output_available = 16;
+
+  // increment the counter for the next round
+  ctx->input[12] += 1;
+  if (ctx->input[12] == 0) {
+    ctx->input[13] += 1;
+    if (ctx->input[13] == 0) {  // and keep increasing into the nonce
+      ctx->input[14] += 1;
+    }
+  }
+}
+
+static uint32_t chacha_next32(mi_random_ctx_t* ctx) {
+  if (ctx->output_available <= 0) {
+    chacha_block(ctx);
+    ctx->output_available = 16; // (assign again to suppress static analysis warning)
+  }
+  const uint32_t x = ctx->output[16 - ctx->output_available];
+  ctx->output[16 - ctx->output_available] = 0; // reset once the data is handed out
+  ctx->output_available--;
+  return x;
+}
+
+static inline uint32_t read32(const uint8_t* p, size_t idx32) {
+  const size_t i = 4*idx32;
+  return ((uint32_t)p[i+0] | (uint32_t)p[i+1] << 8 | (uint32_t)p[i+2] << 16 | (uint32_t)p[i+3] << 24);
+}
+
+static void chacha_init(mi_random_ctx_t* ctx, const uint8_t key[32], uint64_t nonce)
+{
+  // since we only use chacha for randomness (and not encryption) we
+  // do not _need_ to read 32-bit values as little endian but we do anyways
+  // just for being compatible :-)
+  memset(ctx, 0, sizeof(*ctx));
+  for (size_t i = 0; i < 4; i++) {
+    const uint8_t* sigma = (uint8_t*)"expand 32-byte k";
+    ctx->input[i] = read32(sigma,i);
+  }
+  for (size_t i = 0; i < 8; i++) {
+    ctx->input[i + 4] = read32(key,i);
+  }
+  ctx->input[12] = 0;
+  ctx->input[13] = 0;
+  ctx->input[14] = (uint32_t)nonce;
+  ctx->input[15] = (uint32_t)(nonce >> 32);
+}
+
+static void chacha_split(mi_random_ctx_t* ctx, uint64_t nonce, mi_random_ctx_t* ctx_new) {
+  memset(ctx_new, 0, sizeof(*ctx_new));
+  _mi_memcpy(ctx_new->input, ctx->input, sizeof(ctx_new->input));
+  ctx_new->input[12] = 0;
+  ctx_new->input[13] = 0;
+  ctx_new->input[14] = (uint32_t)nonce;
+  ctx_new->input[15] = (uint32_t)(nonce >> 32);
+  mi_assert_internal(ctx->input[14] != ctx_new->input[14] || ctx->input[15] != ctx_new->input[15]); // do not reuse nonces!
+  chacha_block(ctx_new);
+}
+
+
+/* ----------------------------------------------------------------------------
+Random interface
+-----------------------------------------------------------------------------*/
+
+#if MI_DEBUG>1
+static bool mi_random_is_initialized(mi_random_ctx_t* ctx) {
+  return (ctx != NULL && ctx->input[0] != 0);
+}
+#endif
+
+void _mi_random_split(mi_random_ctx_t* ctx, mi_random_ctx_t* ctx_new) {
+  mi_assert_internal(mi_random_is_initialized(ctx));
+  mi_assert_internal(ctx != ctx_new);
+  chacha_split(ctx, (uintptr_t)ctx_new /*nonce*/, ctx_new);
+}
+
+uintptr_t _mi_random_next(mi_random_ctx_t* ctx) {
+  mi_assert_internal(mi_random_is_initialized(ctx));
+  #if MI_INTPTR_SIZE <= 4
+    return chacha_next32(ctx);
+  #elif MI_INTPTR_SIZE == 8
+    return (((uintptr_t)chacha_next32(ctx) << 32) | chacha_next32(ctx));
+  #else
+  # error "define mi_random_next for this platform"
+  #endif
+}
+
+
+/* ----------------------------------------------------------------------------
+To initialize a fresh random context.
+If we cannot get good randomness, we fall back to weak randomness based on a timer and ASLR.
+-----------------------------------------------------------------------------*/
+
+uintptr_t _mi_os_random_weak(uintptr_t extra_seed) {
+  uintptr_t x = (uintptr_t)&_mi_os_random_weak ^ extra_seed; // ASLR makes the address random
+  x ^= _mi_prim_clock_now();
+  // and do a few randomization steps
+  uintptr_t max = ((x ^ (x >> 17)) & 0x0F) + 1;
+  for (uintptr_t i = 0; i < max; i++) {
+    x = _mi_random_shuffle(x);
+  }
+  mi_assert_internal(x != 0);
+  return x;
+}
+
+static void mi_random_init_ex(mi_random_ctx_t* ctx, bool use_weak) {
+  uint8_t key[32] = {0};
+  if (use_weak || !_mi_prim_random_buf(key, sizeof(key))) {
+    // if we fail to get random data from the OS, we fall back to a
+    // weak random source based on the current time
+    #if !defined(__wasi__)
+    if (!use_weak) { _mi_warning_message("unable to use secure randomness\n"); }
+    #endif
+    uintptr_t x = _mi_os_random_weak(0);
+    for (size_t i = 0; i < 8; i++) {  // key is eight 32-bit words.
+      x = _mi_random_shuffle(x);
+      ((uint32_t*)key)[i] = (uint32_t)x;
+    }
+    ctx->weak = true;
+  }
+  else {
+    ctx->weak = false;
+  }
+  chacha_init(ctx, key, (uintptr_t)ctx /*nonce*/ );
+}
+
+void _mi_random_init(mi_random_ctx_t* ctx) {
+  mi_random_init_ex(ctx, false);
+}
+
+void _mi_random_init_weak(mi_random_ctx_t * ctx) {
+  mi_random_init_ex(ctx, true);
+}
+
+void _mi_random_reinit_if_weak(mi_random_ctx_t * ctx) {
+  if (ctx->weak) {
+    _mi_random_init(ctx);
+  }
+}
+
+/* --------------------------------------------------------
+test vectors from <https://tools.ietf.org/html/rfc8439>
+----------------------------------------------------------- */
+/*
+static bool array_equals(uint32_t* x, uint32_t* y, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    if (x[i] != y[i]) return false;
+  }
+  return true;
+}
+static void chacha_test(void)
+{
+  uint32_t x[4] = { 0x11111111, 0x01020304, 0x9b8d6f43, 0x01234567 };
+  uint32_t x_out[4] = { 0xea2a92f4, 0xcb1cf8ce, 0x4581472e, 0x5881c4bb };
+  qround(x, 0, 1, 2, 3);
+  mi_assert_internal(array_equals(x, x_out, 4));
+
+  uint32_t y[16] = {
+       0x879531e0,  0xc5ecf37d,  0x516461b1,  0xc9a62f8a,
+       0x44c20ef3,  0x3390af7f,  0xd9fc690b,  0x2a5f714c,
+       0x53372767,  0xb00a5631,  0x974c541a,  0x359e9963,
+       0x5c971061,  0x3d631689,  0x2098d9d6,  0x91dbd320 };
+  uint32_t y_out[16] = {
+       0x879531e0,  0xc5ecf37d,  0xbdb886dc,  0xc9a62f8a,
+       0x44c20ef3,  0x3390af7f,  0xd9fc690b,  0xcfacafd2,
+       0xe46bea80,  0xb00a5631,  0x974c541a,  0x359e9963,
+       0x5c971061,  0xccc07c79,  0x2098d9d6,  0x91dbd320 };
+  qround(y, 2, 7, 8, 13);
+  mi_assert_internal(array_equals(y, y_out, 16));
+
+  mi_random_ctx_t r = {
+    { 0x61707865, 0x3320646e, 0x79622d32, 0x6b206574,
+      0x03020100, 0x07060504, 0x0b0a0908, 0x0f0e0d0c,
+      0x13121110, 0x17161514, 0x1b1a1918, 0x1f1e1d1c,
+      0x00000001, 0x09000000, 0x4a000000, 0x00000000 },
+    {0},
+    0
+  };
+  uint32_t r_out[16] = {
+       0xe4e7f110, 0x15593bd1, 0x1fdd0f50, 0xc47120a3,
+       0xc7f4d1c7, 0x0368c033, 0x9aaa2204, 0x4e6cd4c3,
+       0x466482d2, 0x09aa9f07, 0x05d7c214, 0xa2028bd9,
+       0xd19c12b5, 0xb94e16de, 0xe883d0cb, 0x4e3c50a2 };
+  chacha_block(&r);
+  mi_assert_internal(array_equals(r.output, r_out, 16));
+}
+*/
diff --git a/Objects/mimalloc/segment-map.c b/Objects/mimalloc/segment-map.c
new file mode 100644
index 00000000000000..3cd2127e56c1a7
--- /dev/null
+++ b/Objects/mimalloc/segment-map.c
@@ -0,0 +1,153 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2019-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* -----------------------------------------------------------
+  The following functions are to reliably find the segment or
+  block that encompasses any pointer p (or NULL if it is not
+  in any of our segments).
+  We maintain a bitmap of all memory with 1 bit per MI_SEGMENT_SIZE (64MiB)
+  set to 1 if it contains the segment meta data.
+----------------------------------------------------------- */
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+
+#if (MI_INTPTR_SIZE==8)
+#define MI_MAX_ADDRESS    ((size_t)40 << 40)  // 40TB (to include huge page areas)
+#else
+#define MI_MAX_ADDRESS    ((size_t)2 << 30)   // 2Gb
+#endif
+
+#define MI_SEGMENT_MAP_BITS  (MI_MAX_ADDRESS / MI_SEGMENT_SIZE)
+#define MI_SEGMENT_MAP_SIZE  (MI_SEGMENT_MAP_BITS / 8)
+#define MI_SEGMENT_MAP_WSIZE (MI_SEGMENT_MAP_SIZE / MI_INTPTR_SIZE)
+
+static _Atomic(uintptr_t) mi_segment_map[MI_SEGMENT_MAP_WSIZE + 1];  // 2KiB per TB with 64MiB segments
+
+static size_t mi_segment_map_index_of(const mi_segment_t* segment, size_t* bitidx) {
+  mi_assert_internal(_mi_ptr_segment(segment + 1) == segment); // is it aligned on MI_SEGMENT_SIZE?
+  if ((uintptr_t)segment >= MI_MAX_ADDRESS) {
+    *bitidx = 0;
+    return MI_SEGMENT_MAP_WSIZE;
+  }
+  else {
+    const uintptr_t segindex = ((uintptr_t)segment) / MI_SEGMENT_SIZE;
+    *bitidx = segindex % MI_INTPTR_BITS;
+    const size_t mapindex = segindex / MI_INTPTR_BITS;
+    mi_assert_internal(mapindex < MI_SEGMENT_MAP_WSIZE);
+    return mapindex;
+  }
+}
+
+void _mi_segment_map_allocated_at(const mi_segment_t* segment) {
+  size_t bitidx;
+  size_t index = mi_segment_map_index_of(segment, &bitidx);
+  mi_assert_internal(index <= MI_SEGMENT_MAP_WSIZE);
+  if (index==MI_SEGMENT_MAP_WSIZE) return;
+  uintptr_t mask = mi_atomic_load_relaxed(&mi_segment_map[index]);
+  uintptr_t newmask;
+  do {
+    newmask = (mask | ((uintptr_t)1 << bitidx));
+  } while (!mi_atomic_cas_weak_release(&mi_segment_map[index], &mask, newmask));
+}
+
+void _mi_segment_map_freed_at(const mi_segment_t* segment) {
+  size_t bitidx;
+  size_t index = mi_segment_map_index_of(segment, &bitidx);
+  mi_assert_internal(index <= MI_SEGMENT_MAP_WSIZE);
+  if (index == MI_SEGMENT_MAP_WSIZE) return;
+  uintptr_t mask = mi_atomic_load_relaxed(&mi_segment_map[index]);
+  uintptr_t newmask;
+  do {
+    newmask = (mask & ~((uintptr_t)1 << bitidx));
+  } while (!mi_atomic_cas_weak_release(&mi_segment_map[index], &mask, newmask));
+}
+
+// Determine the segment belonging to a pointer or NULL if it is not in a valid segment.
+static mi_segment_t* _mi_segment_of(const void* p) {
+  if (p == NULL) return NULL;
+  mi_segment_t* segment = _mi_ptr_segment(p);
+  mi_assert_internal(segment != NULL);
+  size_t bitidx;
+  size_t index = mi_segment_map_index_of(segment, &bitidx);
+  // fast path: for any pointer to valid small/medium/large object or first MI_SEGMENT_SIZE in huge
+  const uintptr_t mask = mi_atomic_load_relaxed(&mi_segment_map[index]);
+  if mi_likely((mask & ((uintptr_t)1 << bitidx)) != 0) {
+    return segment; // yes, allocated by us
+  }
+  if (index==MI_SEGMENT_MAP_WSIZE) return NULL;
+
+  // TODO: maintain max/min allocated range for efficiency for more efficient rejection of invalid pointers?
+
+  // search downwards for the first segment in case it is an interior pointer
+  // could be slow but searches in MI_INTPTR_SIZE * MI_SEGMENT_SIZE (512MiB) steps trough
+  // valid huge objects
+  // note: we could maintain a lowest index to speed up the path for invalid pointers?
+  size_t lobitidx;
+  size_t loindex;
+  uintptr_t lobits = mask & (((uintptr_t)1 << bitidx) - 1);
+  if (lobits != 0) {
+    loindex = index;
+    lobitidx = mi_bsr(lobits);    // lobits != 0
+  }
+  else if (index == 0) {
+    return NULL;
+  }
+  else {
+    mi_assert_internal(index > 0);
+    uintptr_t lomask = mask;
+    loindex = index;
+    do {
+      loindex--;
+      lomask = mi_atomic_load_relaxed(&mi_segment_map[loindex]);
+    } while (lomask != 0 && loindex > 0);
+    if (lomask == 0) return NULL;
+    lobitidx = mi_bsr(lomask);    // lomask != 0
+  }
+  mi_assert_internal(loindex < MI_SEGMENT_MAP_WSIZE);
+  // take difference as the addresses could be larger than the MAX_ADDRESS space.
+  size_t diff = (((index - loindex) * (8*MI_INTPTR_SIZE)) + bitidx - lobitidx) * MI_SEGMENT_SIZE;
+  segment = (mi_segment_t*)((uint8_t*)segment - diff);
+
+  if (segment == NULL) return NULL;
+  mi_assert_internal((void*)segment < p);
+  bool cookie_ok = (_mi_ptr_cookie(segment) == segment->cookie);
+  mi_assert_internal(cookie_ok);
+  if mi_unlikely(!cookie_ok) return NULL;
+  if (((uint8_t*)segment + mi_segment_size(segment)) <= (uint8_t*)p) return NULL; // outside the range
+  mi_assert_internal(p >= (void*)segment && (uint8_t*)p < (uint8_t*)segment + mi_segment_size(segment));
+  return segment;
+}
+
+// Is this a valid pointer in our heap?
+static bool  mi_is_valid_pointer(const void* p) {
+  return ((_mi_segment_of(p) != NULL) || (_mi_arena_contains(p)));
+}
+
+mi_decl_nodiscard mi_decl_export bool mi_is_in_heap_region(const void* p) mi_attr_noexcept {
+  return mi_is_valid_pointer(p);
+}
+
+/*
+// Return the full segment range belonging to a pointer
+static void* mi_segment_range_of(const void* p, size_t* size) {
+  mi_segment_t* segment = _mi_segment_of(p);
+  if (segment == NULL) {
+    if (size != NULL) *size = 0;
+    return NULL;
+  }
+  else {
+    if (size != NULL) *size = segment->segment_size;
+    return segment;
+  }
+  mi_assert_expensive(page == NULL || mi_segment_is_valid(_mi_page_segment(page),tld));
+  mi_assert_internal(page == NULL || (mi_segment_page_size(_mi_page_segment(page)) - (MI_SECURE == 0 ? 0 : _mi_os_page_size())) >= block_size);
+  mi_reset_delayed(tld);
+  mi_assert_internal(page == NULL || mi_page_not_in_queue(page, tld));
+  return page;
+}
+*/
diff --git a/Objects/mimalloc/segment.c b/Objects/mimalloc/segment.c
new file mode 100644
index 00000000000000..033e0f97c36c14
--- /dev/null
+++ b/Objects/mimalloc/segment.c
@@ -0,0 +1,1617 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+
+#include <string.h>  // memset
+#include <stdio.h>
+
+#define MI_PAGE_HUGE_ALIGN   (256*1024)
+
+static void mi_segment_try_purge(mi_segment_t* segment, bool force, mi_stats_t* stats);
+
+
+// -------------------------------------------------------------------
+// commit mask
+// -------------------------------------------------------------------
+
+static bool mi_commit_mask_all_set(const mi_commit_mask_t* commit, const mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    if ((commit->mask[i] & cm->mask[i]) != cm->mask[i]) return false;
+  }
+  return true;
+}
+
+static bool mi_commit_mask_any_set(const mi_commit_mask_t* commit, const mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    if ((commit->mask[i] & cm->mask[i]) != 0) return true;
+  }
+  return false;
+}
+
+static void mi_commit_mask_create_intersect(const mi_commit_mask_t* commit, const mi_commit_mask_t* cm, mi_commit_mask_t* res) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    res->mask[i] = (commit->mask[i] & cm->mask[i]);
+  }
+}
+
+static void mi_commit_mask_clear(mi_commit_mask_t* res, const mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    res->mask[i] &= ~(cm->mask[i]);
+  }
+}
+
+static void mi_commit_mask_set(mi_commit_mask_t* res, const mi_commit_mask_t* cm) {
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    res->mask[i] |= cm->mask[i];
+  }
+}
+
+static void mi_commit_mask_create(size_t bitidx, size_t bitcount, mi_commit_mask_t* cm) {
+  mi_assert_internal(bitidx < MI_COMMIT_MASK_BITS);
+  mi_assert_internal((bitidx + bitcount) <= MI_COMMIT_MASK_BITS);
+  if (bitcount == MI_COMMIT_MASK_BITS) {
+    mi_assert_internal(bitidx==0);
+    mi_commit_mask_create_full(cm);
+  }
+  else if (bitcount == 0) {
+    mi_commit_mask_create_empty(cm);
+  }
+  else {
+    mi_commit_mask_create_empty(cm);
+    size_t i = bitidx / MI_COMMIT_MASK_FIELD_BITS;
+    size_t ofs = bitidx % MI_COMMIT_MASK_FIELD_BITS;
+    while (bitcount > 0) {
+      mi_assert_internal(i < MI_COMMIT_MASK_FIELD_COUNT);
+      size_t avail = MI_COMMIT_MASK_FIELD_BITS - ofs;
+      size_t count = (bitcount > avail ? avail : bitcount);
+      size_t mask = (count >= MI_COMMIT_MASK_FIELD_BITS ? ~((size_t)0) : (((size_t)1 << count) - 1) << ofs);
+      cm->mask[i] = mask;
+      bitcount -= count;
+      ofs = 0;
+      i++;
+    }
+  }
+}
+
+size_t _mi_commit_mask_committed_size(const mi_commit_mask_t* cm, size_t total) {
+  mi_assert_internal((total%MI_COMMIT_MASK_BITS)==0);
+  size_t count = 0;
+  for (size_t i = 0; i < MI_COMMIT_MASK_FIELD_COUNT; i++) {
+    size_t mask = cm->mask[i];
+    if (~mask == 0) {
+      count += MI_COMMIT_MASK_FIELD_BITS;
+    }
+    else {
+      for (; mask != 0; mask >>= 1) {  // todo: use popcount
+        if ((mask&1)!=0) count++;
+      }
+    }
+  }
+  // we use total since for huge segments each commit bit may represent a larger size
+  return ((total / MI_COMMIT_MASK_BITS) * count);
+}
+
+
+size_t _mi_commit_mask_next_run(const mi_commit_mask_t* cm, size_t* idx) {
+  size_t i = (*idx) / MI_COMMIT_MASK_FIELD_BITS;
+  size_t ofs = (*idx) % MI_COMMIT_MASK_FIELD_BITS;
+  size_t mask = 0;
+  // find first ones
+  while (i < MI_COMMIT_MASK_FIELD_COUNT) {
+    mask = cm->mask[i];
+    mask >>= ofs;
+    if (mask != 0) {
+      while ((mask&1) == 0) {
+        mask >>= 1;
+        ofs++;
+      }
+      break;
+    }
+    i++;
+    ofs = 0;
+  }
+  if (i >= MI_COMMIT_MASK_FIELD_COUNT) {
+    // not found
+    *idx = MI_COMMIT_MASK_BITS;
+    return 0;
+  }
+  else {
+    // found, count ones
+    size_t count = 0;
+    *idx = (i*MI_COMMIT_MASK_FIELD_BITS) + ofs;
+    do {
+      mi_assert_internal(ofs < MI_COMMIT_MASK_FIELD_BITS && (mask&1) == 1);
+      do {
+        count++;
+        mask >>= 1;
+      } while ((mask&1) == 1);
+      if ((((*idx + count) % MI_COMMIT_MASK_FIELD_BITS) == 0)) {
+        i++;
+        if (i >= MI_COMMIT_MASK_FIELD_COUNT) break;
+        mask = cm->mask[i];
+        ofs = 0;
+      }
+    } while ((mask&1) == 1);
+    mi_assert_internal(count > 0);
+    return count;
+  }
+}
+
+
+/* --------------------------------------------------------------------------------
+  Segment allocation
+
+  If a  thread ends, it "abandons" pages with used blocks
+  and there is an abandoned segment list whose segments can
+  be reclaimed by still running threads, much like work-stealing.
+-------------------------------------------------------------------------------- */
+
+
+/* -----------------------------------------------------------
+   Slices
+----------------------------------------------------------- */
+
+
+static const mi_slice_t* mi_segment_slices_end(const mi_segment_t* segment) {
+  return &segment->slices[segment->slice_entries];
+}
+
+static uint8_t* mi_slice_start(const mi_slice_t* slice) {
+  mi_segment_t* segment = _mi_ptr_segment(slice);
+  mi_assert_internal(slice >= segment->slices && slice < mi_segment_slices_end(segment));
+  return ((uint8_t*)segment + ((slice - segment->slices)*MI_SEGMENT_SLICE_SIZE));
+}
+
+
+/* -----------------------------------------------------------
+   Bins
+----------------------------------------------------------- */
+// Use bit scan forward to quickly find the first zero bit if it is available
+
+static inline size_t mi_slice_bin8(size_t slice_count) {
+  if (slice_count<=1) return slice_count;
+  mi_assert_internal(slice_count <= MI_SLICES_PER_SEGMENT);
+  slice_count--;
+  size_t s = mi_bsr(slice_count);  // slice_count > 1
+  if (s <= 2) return slice_count + 1;
+  size_t bin = ((s << 2) | ((slice_count >> (s - 2))&0x03)) - 4;
+  return bin;
+}
+
+static inline size_t mi_slice_bin(size_t slice_count) {
+  mi_assert_internal(slice_count*MI_SEGMENT_SLICE_SIZE <= MI_SEGMENT_SIZE);
+  mi_assert_internal(mi_slice_bin8(MI_SLICES_PER_SEGMENT) <= MI_SEGMENT_BIN_MAX);
+  size_t bin = mi_slice_bin8(slice_count);
+  mi_assert_internal(bin <= MI_SEGMENT_BIN_MAX);
+  return bin;
+}
+
+static inline size_t mi_slice_index(const mi_slice_t* slice) {
+  mi_segment_t* segment = _mi_ptr_segment(slice);
+  ptrdiff_t index = slice - segment->slices;
+  mi_assert_internal(index >= 0 && index < (ptrdiff_t)segment->slice_entries);
+  return index;
+}
+
+
+/* -----------------------------------------------------------
+   Slice span queues
+----------------------------------------------------------- */
+
+static void mi_span_queue_push(mi_span_queue_t* sq, mi_slice_t* slice) {
+  // todo: or push to the end?
+  mi_assert_internal(slice->prev == NULL && slice->next==NULL);
+  slice->prev = NULL; // paranoia
+  slice->next = sq->first;
+  sq->first = slice;
+  if (slice->next != NULL) slice->next->prev = slice;
+                     else sq->last = slice;
+  slice->xblock_size = 0; // free
+}
+
+static mi_span_queue_t* mi_span_queue_for(size_t slice_count, mi_segments_tld_t* tld) {
+  size_t bin = mi_slice_bin(slice_count);
+  mi_span_queue_t* sq = &tld->spans[bin];
+  mi_assert_internal(sq->slice_count >= slice_count);
+  return sq;
+}
+
+static void mi_span_queue_delete(mi_span_queue_t* sq, mi_slice_t* slice) {
+  mi_assert_internal(slice->xblock_size==0 && slice->slice_count>0 && slice->slice_offset==0);
+  // should work too if the queue does not contain slice (which can happen during reclaim)
+  if (slice->prev != NULL) slice->prev->next = slice->next;
+  if (slice == sq->first) sq->first = slice->next;
+  if (slice->next != NULL) slice->next->prev = slice->prev;
+  if (slice == sq->last) sq->last = slice->prev;
+  slice->prev = NULL;
+  slice->next = NULL;
+  slice->xblock_size = 1; // no more free
+}
+
+
+/* -----------------------------------------------------------
+ Invariant checking
+----------------------------------------------------------- */
+
+static bool mi_slice_is_used(const mi_slice_t* slice) {
+  return (slice->xblock_size > 0);
+}
+
+
+#if (MI_DEBUG>=3)
+static bool mi_span_queue_contains(mi_span_queue_t* sq, mi_slice_t* slice) {
+  for (mi_slice_t* s = sq->first; s != NULL; s = s->next) {
+    if (s==slice) return true;
+  }
+  return false;
+}
+
+static bool mi_segment_is_valid(mi_segment_t* segment, mi_segments_tld_t* tld) {
+  mi_assert_internal(segment != NULL);
+  mi_assert_internal(_mi_ptr_cookie(segment) == segment->cookie);
+  mi_assert_internal(segment->abandoned <= segment->used);
+  mi_assert_internal(segment->thread_id == 0 || segment->thread_id == _mi_thread_id());
+  mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->purge_mask)); // can only decommit committed blocks
+  //mi_assert_internal(segment->segment_info_size % MI_SEGMENT_SLICE_SIZE == 0);
+  mi_slice_t* slice = &segment->slices[0];
+  const mi_slice_t* end = mi_segment_slices_end(segment);
+  size_t used_count = 0;
+  mi_span_queue_t* sq;
+  while(slice < end) {
+    mi_assert_internal(slice->slice_count > 0);
+    mi_assert_internal(slice->slice_offset == 0);
+    size_t index = mi_slice_index(slice);
+    size_t maxindex = (index + slice->slice_count >= segment->slice_entries ? segment->slice_entries : index + slice->slice_count) - 1;
+    if (mi_slice_is_used(slice)) { // a page in use, we need at least MAX_SLICE_OFFSET valid back offsets
+      used_count++;
+      for (size_t i = 0; i <= MI_MAX_SLICE_OFFSET && index + i <= maxindex; i++) {
+        mi_assert_internal(segment->slices[index + i].slice_offset == i*sizeof(mi_slice_t));
+        mi_assert_internal(i==0 || segment->slices[index + i].slice_count == 0);
+        mi_assert_internal(i==0 || segment->slices[index + i].xblock_size == 1);
+      }
+      // and the last entry as well (for coalescing)
+      const mi_slice_t* last = slice + slice->slice_count - 1;
+      if (last > slice && last < mi_segment_slices_end(segment)) {
+        mi_assert_internal(last->slice_offset == (slice->slice_count-1)*sizeof(mi_slice_t));
+        mi_assert_internal(last->slice_count == 0);
+        mi_assert_internal(last->xblock_size == 1);
+      }
+    }
+    else {  // free range of slices; only last slice needs a valid back offset
+      mi_slice_t* last = &segment->slices[maxindex];
+      if (segment->kind != MI_SEGMENT_HUGE || slice->slice_count <= (segment->slice_entries - segment->segment_info_slices)) {
+        mi_assert_internal((uint8_t*)slice == (uint8_t*)last - last->slice_offset);
+      }
+      mi_assert_internal(slice == last || last->slice_count == 0 );
+      mi_assert_internal(last->xblock_size == 0 || (segment->kind==MI_SEGMENT_HUGE && last->xblock_size==1));
+      if (segment->kind != MI_SEGMENT_HUGE && segment->thread_id != 0) { // segment is not huge or abandoned
+        sq = mi_span_queue_for(slice->slice_count,tld);
+        mi_assert_internal(mi_span_queue_contains(sq,slice));
+      }
+    }
+    slice = &segment->slices[maxindex+1];
+  }
+  mi_assert_internal(slice == end);
+  mi_assert_internal(used_count == segment->used + 1);
+  return true;
+}
+#endif
+
+/* -----------------------------------------------------------
+ Segment size calculations
+----------------------------------------------------------- */
+
+static size_t mi_segment_info_size(mi_segment_t* segment) {
+  return segment->segment_info_slices * MI_SEGMENT_SLICE_SIZE;
+}
+
+static uint8_t* _mi_segment_page_start_from_slice(const mi_segment_t* segment, const mi_slice_t* slice, size_t xblock_size, size_t* page_size)
+{
+  ptrdiff_t idx = slice - segment->slices;
+  size_t psize = (size_t)slice->slice_count * MI_SEGMENT_SLICE_SIZE;
+  // make the start not OS page aligned for smaller blocks to avoid page/cache effects
+  // note: the offset must always be an xblock_size multiple since we assume small allocations
+  // are aligned (see `mi_heap_malloc_aligned`).
+  size_t start_offset = 0;
+  if (xblock_size >= MI_INTPTR_SIZE) {
+    if (xblock_size <= 64) { start_offset = 3*xblock_size; }
+    else if (xblock_size <= 512) { start_offset = xblock_size; }
+  }
+  if (page_size != NULL) { *page_size = psize - start_offset; }
+  return (uint8_t*)segment + ((idx*MI_SEGMENT_SLICE_SIZE) + start_offset);
+}
+
+// Start of the page available memory; can be used on uninitialized pages
+uint8_t* _mi_segment_page_start(const mi_segment_t* segment, const mi_page_t* page, size_t* page_size)
+{
+  const mi_slice_t* slice = mi_page_to_slice((mi_page_t*)page);
+  uint8_t* p = _mi_segment_page_start_from_slice(segment, slice, page->xblock_size, page_size);
+  mi_assert_internal(page->xblock_size > 0 || _mi_ptr_page(p) == page);
+  mi_assert_internal(_mi_ptr_segment(p) == segment);
+  return p;
+}
+
+
+static size_t mi_segment_calculate_slices(size_t required, size_t* pre_size, size_t* info_slices) {
+  size_t page_size = _mi_os_page_size();
+  size_t isize     = _mi_align_up(sizeof(mi_segment_t), page_size);
+  size_t guardsize = 0;
+
+  if (MI_SECURE>0) {
+    // in secure mode, we set up a protected page in between the segment info
+    // and the page data (and one at the end of the segment)
+    guardsize = page_size;
+    if (required > 0) {
+      required = _mi_align_up(required, MI_SEGMENT_SLICE_SIZE) + page_size;
+    }
+  }
+
+  if (pre_size != NULL) *pre_size = isize;
+  isize = _mi_align_up(isize + guardsize, MI_SEGMENT_SLICE_SIZE);
+  if (info_slices != NULL) *info_slices = isize / MI_SEGMENT_SLICE_SIZE;
+  size_t segment_size = (required==0 ? MI_SEGMENT_SIZE : _mi_align_up( required + isize + guardsize, MI_SEGMENT_SLICE_SIZE) );
+  mi_assert_internal(segment_size % MI_SEGMENT_SLICE_SIZE == 0);
+  return (segment_size / MI_SEGMENT_SLICE_SIZE);
+}
+
+
+/* ----------------------------------------------------------------------------
+Segment caches
+We keep a small segment cache per thread to increase local
+reuse and avoid setting/clearing guard pages in secure mode.
+------------------------------------------------------------------------------- */
+
+static void mi_segments_track_size(long segment_size, mi_segments_tld_t* tld) {
+  if (segment_size>=0) _mi_stat_increase(&tld->stats->segments,1);
+                  else _mi_stat_decrease(&tld->stats->segments,1);
+  tld->count += (segment_size >= 0 ? 1 : -1);
+  if (tld->count > tld->peak_count) tld->peak_count = tld->count;
+  tld->current_size += segment_size;
+  if (tld->current_size > tld->peak_size) tld->peak_size = tld->current_size;
+}
+
+static void mi_segment_os_free(mi_segment_t* segment, mi_segments_tld_t* tld) {
+  segment->thread_id = 0;
+  _mi_segment_map_freed_at(segment);
+  mi_segments_track_size(-((long)mi_segment_size(segment)),tld);
+  if (MI_SECURE>0) {
+    // _mi_os_unprotect(segment, mi_segment_size(segment)); // ensure no more guard pages are set
+    // unprotect the guard pages; we cannot just unprotect the whole segment size as part may be decommitted
+    size_t os_pagesize = _mi_os_page_size();
+    _mi_os_unprotect((uint8_t*)segment + mi_segment_info_size(segment) - os_pagesize, os_pagesize);
+    uint8_t* end = (uint8_t*)segment + mi_segment_size(segment) - os_pagesize;
+    _mi_os_unprotect(end, os_pagesize);
+  }
+
+  // purge delayed decommits now? (no, leave it to the arena)
+  // mi_segment_try_purge(segment,true,tld->stats);
+
+  const size_t size = mi_segment_size(segment);
+  const size_t csize = _mi_commit_mask_committed_size(&segment->commit_mask, size);
+
+  _mi_abandoned_await_readers();  // wait until safe to free
+  _mi_arena_free(segment, mi_segment_size(segment), csize, segment->memid, tld->stats);
+}
+
+// called by threads that are terminating
+void _mi_segment_thread_collect(mi_segments_tld_t* tld) {
+  MI_UNUSED(tld);
+  // nothing to do
+}
+
+
+/* -----------------------------------------------------------
+   Commit/Decommit ranges
+----------------------------------------------------------- */
+
+static void mi_segment_commit_mask(mi_segment_t* segment, bool conservative, uint8_t* p, size_t size, uint8_t** start_p, size_t* full_size, mi_commit_mask_t* cm) {
+  mi_assert_internal(_mi_ptr_segment(p + 1) == segment);
+  mi_assert_internal(segment->kind != MI_SEGMENT_HUGE);
+  mi_commit_mask_create_empty(cm);
+  if (size == 0 || size > MI_SEGMENT_SIZE || segment->kind == MI_SEGMENT_HUGE) return;
+  const size_t segstart = mi_segment_info_size(segment);
+  const size_t segsize = mi_segment_size(segment);
+  if (p >= (uint8_t*)segment + segsize) return;
+
+  size_t pstart = (p - (uint8_t*)segment);
+  mi_assert_internal(pstart + size <= segsize);
+
+  size_t start;
+  size_t end;
+  if (conservative) {
+    // decommit conservative
+    start = _mi_align_up(pstart, MI_COMMIT_SIZE);
+    end   = _mi_align_down(pstart + size, MI_COMMIT_SIZE);
+    mi_assert_internal(start >= segstart);
+    mi_assert_internal(end <= segsize);
+  }
+  else {
+    // commit liberal
+    start = _mi_align_down(pstart, MI_MINIMAL_COMMIT_SIZE);
+    end   = _mi_align_up(pstart + size, MI_MINIMAL_COMMIT_SIZE);
+  }
+  if (pstart >= segstart && start < segstart) {  // note: the mask is also calculated for an initial commit of the info area
+    start = segstart;
+  }
+  if (end > segsize) {
+    end = segsize;
+  }
+
+  mi_assert_internal(start <= pstart && (pstart + size) <= end);
+  mi_assert_internal(start % MI_COMMIT_SIZE==0 && end % MI_COMMIT_SIZE == 0);
+  *start_p   = (uint8_t*)segment + start;
+  *full_size = (end > start ? end - start : 0);
+  if (*full_size == 0) return;
+
+  size_t bitidx = start / MI_COMMIT_SIZE;
+  mi_assert_internal(bitidx < MI_COMMIT_MASK_BITS);
+
+  size_t bitcount = *full_size / MI_COMMIT_SIZE; // can be 0
+  if (bitidx + bitcount > MI_COMMIT_MASK_BITS) {
+    _mi_warning_message("commit mask overflow: idx=%zu count=%zu start=%zx end=%zx p=0x%p size=%zu fullsize=%zu\n", bitidx, bitcount, start, end, p, size, *full_size);
+  }
+  mi_assert_internal((bitidx + bitcount) <= MI_COMMIT_MASK_BITS);
+  mi_commit_mask_create(bitidx, bitcount, cm);
+}
+
+static bool mi_segment_commit(mi_segment_t* segment, uint8_t* p, size_t size, mi_stats_t* stats) {
+  mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->purge_mask));
+
+  // commit liberal
+  uint8_t* start = NULL;
+  size_t   full_size = 0;
+  mi_commit_mask_t mask;
+  mi_segment_commit_mask(segment, false /* conservative? */, p, size, &start, &full_size, &mask);
+  if (mi_commit_mask_is_empty(&mask) || full_size == 0) return true;
+
+  if (!mi_commit_mask_all_set(&segment->commit_mask, &mask)) {
+    // committing
+    bool is_zero = false;
+    mi_commit_mask_t cmask;
+    mi_commit_mask_create_intersect(&segment->commit_mask, &mask, &cmask);
+    _mi_stat_decrease(&_mi_stats_main.committed, _mi_commit_mask_committed_size(&cmask, MI_SEGMENT_SIZE)); // adjust for overlap
+    if (!_mi_os_commit(start, full_size, &is_zero, stats)) return false;
+    mi_commit_mask_set(&segment->commit_mask, &mask);
+  }
+
+  // increase purge expiration when using part of delayed purges -- we assume more allocations are coming soon.
+  if (mi_commit_mask_any_set(&segment->purge_mask, &mask)) {
+    segment->purge_expire = _mi_clock_now() + mi_option_get(mi_option_purge_delay);
+  }
+
+  // always clear any delayed purges in our range (as they are either committed now)
+  mi_commit_mask_clear(&segment->purge_mask, &mask);
+  return true;
+}
+
+static bool mi_segment_ensure_committed(mi_segment_t* segment, uint8_t* p, size_t size, mi_stats_t* stats) {
+  mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->purge_mask));
+  // note: assumes commit_mask is always full for huge segments as otherwise the commit mask bits can overflow
+  if (mi_commit_mask_is_full(&segment->commit_mask) && mi_commit_mask_is_empty(&segment->purge_mask)) return true; // fully committed
+  mi_assert_internal(segment->kind != MI_SEGMENT_HUGE);
+  return mi_segment_commit(segment, p, size, stats);
+}
+
+static bool mi_segment_purge(mi_segment_t* segment, uint8_t* p, size_t size, mi_stats_t* stats) {
+  mi_assert_internal(mi_commit_mask_all_set(&segment->commit_mask, &segment->purge_mask));
+  if (!segment->allow_purge) return true;
+
+  // purge conservative
+  uint8_t* start = NULL;
+  size_t   full_size = 0;
+  mi_commit_mask_t mask;
+  mi_segment_commit_mask(segment, true /* conservative? */, p, size, &start, &full_size, &mask);
+  if (mi_commit_mask_is_empty(&mask) || full_size==0) return true;
+
+  if (mi_commit_mask_any_set(&segment->commit_mask, &mask)) {
+    // purging
+    mi_assert_internal((void*)start != (void*)segment);
+    mi_assert_internal(segment->allow_decommit);
+    const bool decommitted = _mi_os_purge(start, full_size, stats);  // reset or decommit
+    if (decommitted) {
+      mi_commit_mask_t cmask;
+      mi_commit_mask_create_intersect(&segment->commit_mask, &mask, &cmask);
+      _mi_stat_increase(&_mi_stats_main.committed, full_size - _mi_commit_mask_committed_size(&cmask, MI_SEGMENT_SIZE)); // adjust for double counting
+      mi_commit_mask_clear(&segment->commit_mask, &mask);
+    }
+  }
+
+  // always clear any scheduled purges in our range
+  mi_commit_mask_clear(&segment->purge_mask, &mask);
+  return true;
+}
+
+static void mi_segment_schedule_purge(mi_segment_t* segment, uint8_t* p, size_t size, mi_stats_t* stats) {
+  if (!segment->allow_purge) return;
+
+  if (mi_option_get(mi_option_purge_delay) == 0) {
+    mi_segment_purge(segment, p, size, stats);
+  }
+  else {
+    // register for future purge in the purge mask
+    uint8_t* start = NULL;
+    size_t   full_size = 0;
+    mi_commit_mask_t mask;
+    mi_segment_commit_mask(segment, true /*conservative*/, p, size, &start, &full_size, &mask);
+    if (mi_commit_mask_is_empty(&mask) || full_size==0) return;
+
+    // update delayed commit
+    mi_assert_internal(segment->purge_expire > 0 || mi_commit_mask_is_empty(&segment->purge_mask));
+    mi_commit_mask_t cmask;
+    mi_commit_mask_create_intersect(&segment->commit_mask, &mask, &cmask);  // only purge what is committed; span_free may try to decommit more
+    mi_commit_mask_set(&segment->purge_mask, &cmask);
+    mi_msecs_t now = _mi_clock_now();
+    if (segment->purge_expire == 0) {
+      // no previous purgess, initialize now
+      segment->purge_expire = now + mi_option_get(mi_option_purge_delay);
+    }
+    else if (segment->purge_expire <= now) {
+      // previous purge mask already expired
+      if (segment->purge_expire + mi_option_get(mi_option_purge_extend_delay) <= now) {
+        mi_segment_try_purge(segment, true, stats);
+      }
+      else {
+        segment->purge_expire = now + mi_option_get(mi_option_purge_extend_delay); // (mi_option_get(mi_option_purge_delay) / 8); // wait a tiny bit longer in case there is a series of free's
+      }
+    }
+    else {
+      // previous purge mask is not yet expired, increase the expiration by a bit.
+      segment->purge_expire += mi_option_get(mi_option_purge_extend_delay);
+    }
+  }
+}
+
+static void mi_segment_try_purge(mi_segment_t* segment, bool force, mi_stats_t* stats) {
+  if (!segment->allow_purge || mi_commit_mask_is_empty(&segment->purge_mask)) return;
+  mi_msecs_t now = _mi_clock_now();
+  if (!force && now < segment->purge_expire) return;
+
+  mi_commit_mask_t mask = segment->purge_mask;
+  segment->purge_expire = 0;
+  mi_commit_mask_create_empty(&segment->purge_mask);
+
+  size_t idx;
+  size_t count;
+  mi_commit_mask_foreach(&mask, idx, count) {
+    // if found, decommit that sequence
+    if (count > 0) {
+      uint8_t* p = (uint8_t*)segment + (idx*MI_COMMIT_SIZE);
+      size_t size = count * MI_COMMIT_SIZE;
+      mi_segment_purge(segment, p, size, stats);
+    }
+  }
+  mi_commit_mask_foreach_end()
+  mi_assert_internal(mi_commit_mask_is_empty(&segment->purge_mask));
+}
+
+
+/* -----------------------------------------------------------
+   Span free
+----------------------------------------------------------- */
+
+static bool mi_segment_is_abandoned(mi_segment_t* segment) {
+  return (segment->thread_id == 0);
+}
+
+// note: can be called on abandoned segments
+static void mi_segment_span_free(mi_segment_t* segment, size_t slice_index, size_t slice_count, bool allow_purge, mi_segments_tld_t* tld) {
+  mi_assert_internal(slice_index < segment->slice_entries);
+  mi_span_queue_t* sq = (segment->kind == MI_SEGMENT_HUGE || mi_segment_is_abandoned(segment)
+                          ? NULL : mi_span_queue_for(slice_count,tld));
+  if (slice_count==0) slice_count = 1;
+  mi_assert_internal(slice_index + slice_count - 1 < segment->slice_entries);
+
+  // set first and last slice (the intermediates can be undetermined)
+  mi_slice_t* slice = &segment->slices[slice_index];
+  slice->slice_count = (uint32_t)slice_count;
+  mi_assert_internal(slice->slice_count == slice_count); // no overflow?
+  slice->slice_offset = 0;
+  if (slice_count > 1) {
+    mi_slice_t* last = &segment->slices[slice_index + slice_count - 1];
+    last->slice_count = 0;
+    last->slice_offset = (uint32_t)(sizeof(mi_page_t)*(slice_count - 1));
+    last->xblock_size = 0;
+  }
+
+  // perhaps decommit
+  if (allow_purge) {
+    mi_segment_schedule_purge(segment, mi_slice_start(slice), slice_count * MI_SEGMENT_SLICE_SIZE, tld->stats);
+  }
+
+  // and push it on the free page queue (if it was not a huge page)
+  if (sq != NULL) mi_span_queue_push( sq, slice );
+             else slice->xblock_size = 0; // mark huge page as free anyways
+}
+
+/*
+// called from reclaim to add existing free spans
+static void mi_segment_span_add_free(mi_slice_t* slice, mi_segments_tld_t* tld) {
+  mi_segment_t* segment = _mi_ptr_segment(slice);
+  mi_assert_internal(slice->xblock_size==0 && slice->slice_count>0 && slice->slice_offset==0);
+  size_t slice_index = mi_slice_index(slice);
+  mi_segment_span_free(segment,slice_index,slice->slice_count,tld);
+}
+*/
+
+static void mi_segment_span_remove_from_queue(mi_slice_t* slice, mi_segments_tld_t* tld) {
+  mi_assert_internal(slice->slice_count > 0 && slice->slice_offset==0 && slice->xblock_size==0);
+  mi_assert_internal(_mi_ptr_segment(slice)->kind != MI_SEGMENT_HUGE);
+  mi_span_queue_t* sq = mi_span_queue_for(slice->slice_count, tld);
+  mi_span_queue_delete(sq, slice);
+}
+
+// note: can be called on abandoned segments
+static mi_slice_t* mi_segment_span_free_coalesce(mi_slice_t* slice, mi_segments_tld_t* tld) {
+  mi_assert_internal(slice != NULL && slice->slice_count > 0 && slice->slice_offset == 0);
+  mi_segment_t* segment = _mi_ptr_segment(slice);
+  bool is_abandoned = mi_segment_is_abandoned(segment);
+
+  // for huge pages, just mark as free but don't add to the queues
+  if (segment->kind == MI_SEGMENT_HUGE) {
+    // issue #691: segment->used can be 0 if the huge page block was freed while abandoned (reclaim will get here in that case)
+    mi_assert_internal((segment->used==0 && slice->xblock_size==0) || segment->used == 1);  // decreased right after this call in `mi_segment_page_clear`
+    slice->xblock_size = 0;  // mark as free anyways
+    // we should mark the last slice `xblock_size=0` now to maintain invariants but we skip it to
+    // avoid a possible cache miss (and the segment is about to be freed)
+    return slice;
+  }
+
+  // otherwise coalesce the span and add to the free span queues
+  size_t slice_count = slice->slice_count;
+  mi_slice_t* next = slice + slice->slice_count;
+  mi_assert_internal(next <= mi_segment_slices_end(segment));
+  if (next < mi_segment_slices_end(segment) && next->xblock_size==0) {
+    // free next block -- remove it from free and merge
+    mi_assert_internal(next->slice_count > 0 && next->slice_offset==0);
+    slice_count += next->slice_count; // extend
+    if (!is_abandoned) { mi_segment_span_remove_from_queue(next, tld); }
+  }
+  if (slice > segment->slices) {
+    mi_slice_t* prev = mi_slice_first(slice - 1);
+    mi_assert_internal(prev >= segment->slices);
+    if (prev->xblock_size==0) {
+      // free previous slice -- remove it from free and merge
+      mi_assert_internal(prev->slice_count > 0 && prev->slice_offset==0);
+      slice_count += prev->slice_count;
+      if (!is_abandoned) { mi_segment_span_remove_from_queue(prev, tld); }
+      slice = prev;
+    }
+  }
+
+  // and add the new free page
+  mi_segment_span_free(segment, mi_slice_index(slice), slice_count, true, tld);
+  return slice;
+}
+
+
+
+/* -----------------------------------------------------------
+   Page allocation
+----------------------------------------------------------- */
+
+// Note: may still return NULL if committing the memory failed
+static mi_page_t* mi_segment_span_allocate(mi_segment_t* segment, size_t slice_index, size_t slice_count, mi_segments_tld_t* tld) {
+  mi_assert_internal(slice_index < segment->slice_entries);
+  mi_slice_t* const slice = &segment->slices[slice_index];
+  mi_assert_internal(slice->xblock_size==0 || slice->xblock_size==1);
+
+  // commit before changing the slice data
+  if (!mi_segment_ensure_committed(segment, _mi_segment_page_start_from_slice(segment, slice, 0, NULL), slice_count * MI_SEGMENT_SLICE_SIZE, tld->stats)) {
+    return NULL;  // commit failed!
+  }
+
+  // convert the slices to a page
+  slice->slice_offset = 0;
+  slice->slice_count = (uint32_t)slice_count;
+  mi_assert_internal(slice->slice_count == slice_count);
+  const size_t bsize = slice_count * MI_SEGMENT_SLICE_SIZE;
+  slice->xblock_size = (uint32_t)(bsize >= MI_HUGE_BLOCK_SIZE ? MI_HUGE_BLOCK_SIZE : bsize);
+  mi_page_t*  page = mi_slice_to_page(slice);
+  mi_assert_internal(mi_page_block_size(page) == bsize);
+
+  // set slice back pointers for the first MI_MAX_SLICE_OFFSET entries
+  size_t extra = slice_count-1;
+  if (extra > MI_MAX_SLICE_OFFSET) extra = MI_MAX_SLICE_OFFSET;
+  if (slice_index + extra >= segment->slice_entries) extra = segment->slice_entries - slice_index - 1;  // huge objects may have more slices than avaiable entries in the segment->slices
+
+  mi_slice_t* slice_next = slice + 1;
+  for (size_t i = 1; i <= extra; i++, slice_next++) {
+    slice_next->slice_offset = (uint32_t)(sizeof(mi_slice_t)*i);
+    slice_next->slice_count = 0;
+    slice_next->xblock_size = 1;
+  }
+
+  // and also for the last one (if not set already) (the last one is needed for coalescing and for large alignments)
+  // note: the cast is needed for ubsan since the index can be larger than MI_SLICES_PER_SEGMENT for huge allocations (see #543)
+  mi_slice_t* last = slice + slice_count - 1;
+  mi_slice_t* end = (mi_slice_t*)mi_segment_slices_end(segment);
+  if (last > end) last = end;
+  if (last > slice) {
+    last->slice_offset = (uint32_t)(sizeof(mi_slice_t) * (last - slice));
+    last->slice_count = 0;
+    last->xblock_size = 1;
+  }
+
+  // and initialize the page
+  page->is_committed = true;
+  segment->used++;
+  return page;
+}
+
+static void mi_segment_slice_split(mi_segment_t* segment, mi_slice_t* slice, size_t slice_count, mi_segments_tld_t* tld) {
+  mi_assert_internal(_mi_ptr_segment(slice) == segment);
+  mi_assert_internal(slice->slice_count >= slice_count);
+  mi_assert_internal(slice->xblock_size > 0); // no more in free queue
+  if (slice->slice_count <= slice_count) return;
+  mi_assert_internal(segment->kind != MI_SEGMENT_HUGE);
+  size_t next_index = mi_slice_index(slice) + slice_count;
+  size_t next_count = slice->slice_count - slice_count;
+  mi_segment_span_free(segment, next_index, next_count, false /* don't purge left-over part */, tld);
+  slice->slice_count = (uint32_t)slice_count;
+}
+
+static mi_page_t* mi_segments_page_find_and_allocate(size_t slice_count, mi_arena_id_t req_arena_id, mi_segments_tld_t* tld) {
+  mi_assert_internal(slice_count*MI_SEGMENT_SLICE_SIZE <= MI_LARGE_OBJ_SIZE_MAX);
+  // search from best fit up
+  mi_span_queue_t* sq = mi_span_queue_for(slice_count, tld);
+  if (slice_count == 0) slice_count = 1;
+  while (sq <= &tld->spans[MI_SEGMENT_BIN_MAX]) {
+    for (mi_slice_t* slice = sq->first; slice != NULL; slice = slice->next) {
+      if (slice->slice_count >= slice_count) {
+        // found one
+        mi_segment_t* segment = _mi_ptr_segment(slice);
+        if (_mi_arena_memid_is_suitable(segment->memid, req_arena_id)) {
+          // found a suitable page span
+          mi_span_queue_delete(sq, slice);
+
+          if (slice->slice_count > slice_count) {
+            mi_segment_slice_split(segment, slice, slice_count, tld);
+          }
+          mi_assert_internal(slice != NULL && slice->slice_count == slice_count && slice->xblock_size > 0);
+          mi_page_t* page = mi_segment_span_allocate(segment, mi_slice_index(slice), slice->slice_count, tld);
+          if (page == NULL) {
+            // commit failed; return NULL but first restore the slice
+            mi_segment_span_free_coalesce(slice, tld);
+            return NULL;
+          }
+          return page;
+        }
+      }
+    }
+    sq++;
+  }
+  // could not find a page..
+  return NULL;
+}
+
+
+/* -----------------------------------------------------------
+   Segment allocation
+----------------------------------------------------------- */
+
+static mi_segment_t* mi_segment_os_alloc( size_t required, size_t page_alignment, bool eager_delayed, mi_arena_id_t req_arena_id,
+                                          size_t* psegment_slices, size_t* ppre_size, size_t* pinfo_slices,
+                                          bool commit, mi_segments_tld_t* tld, mi_os_tld_t* os_tld)
+
+{
+  mi_memid_t memid;
+  bool   allow_large = (!eager_delayed && (MI_SECURE == 0)); // only allow large OS pages once we are no longer lazy
+  size_t align_offset = 0;
+  size_t alignment = MI_SEGMENT_ALIGN;
+
+  if (page_alignment > 0) {
+    // mi_assert_internal(huge_page != NULL);
+    mi_assert_internal(page_alignment >= MI_SEGMENT_ALIGN);
+    alignment = page_alignment;
+    const size_t info_size = (*pinfo_slices) * MI_SEGMENT_SLICE_SIZE;
+    align_offset = _mi_align_up( info_size, MI_SEGMENT_ALIGN );
+    const size_t extra = align_offset - info_size;
+    // recalculate due to potential guard pages
+    *psegment_slices = mi_segment_calculate_slices(required + extra, ppre_size, pinfo_slices);
+  }
+
+  const size_t segment_size = (*psegment_slices) * MI_SEGMENT_SLICE_SIZE;
+  mi_segment_t* segment = (mi_segment_t*)_mi_arena_alloc_aligned(segment_size, alignment, align_offset, commit, allow_large, req_arena_id, &memid, os_tld);
+  if (segment == NULL) {
+    return NULL;  // failed to allocate
+  }
+
+  // ensure metadata part of the segment is committed
+  mi_commit_mask_t commit_mask;
+  if (memid.initially_committed) {
+    mi_commit_mask_create_full(&commit_mask);
+  }
+  else {
+    // at least commit the info slices
+    const size_t commit_needed = _mi_divide_up((*pinfo_slices)*MI_SEGMENT_SLICE_SIZE, MI_COMMIT_SIZE);
+    mi_assert_internal(commit_needed>0);
+    mi_commit_mask_create(0, commit_needed, &commit_mask);
+    mi_assert_internal(commit_needed*MI_COMMIT_SIZE >= (*pinfo_slices)*MI_SEGMENT_SLICE_SIZE);
+    if (!_mi_os_commit(segment, commit_needed*MI_COMMIT_SIZE, NULL, tld->stats)) {
+      _mi_arena_free(segment,segment_size,0,memid,tld->stats);
+      return NULL;
+    }
+  }
+  mi_assert_internal(segment != NULL && (uintptr_t)segment % MI_SEGMENT_SIZE == 0);
+
+  segment->memid = memid;
+  segment->allow_decommit = !memid.is_pinned;
+  segment->allow_purge = segment->allow_decommit && (mi_option_get(mi_option_purge_delay) >= 0);
+  segment->segment_size = segment_size;
+  segment->commit_mask = commit_mask;
+  segment->purge_expire = 0;
+  mi_commit_mask_create_empty(&segment->purge_mask);
+  mi_atomic_store_ptr_release(mi_segment_t, &segment->abandoned_next, NULL);  // tsan
+
+  mi_segments_track_size((long)(segment_size), tld);
+  _mi_segment_map_allocated_at(segment);
+  return segment;
+}
+
+
+// Allocate a segment from the OS aligned to `MI_SEGMENT_SIZE` .
+static mi_segment_t* mi_segment_alloc(size_t required, size_t page_alignment, mi_arena_id_t req_arena_id, mi_segments_tld_t* tld, mi_os_tld_t* os_tld, mi_page_t** huge_page)
+{
+  mi_assert_internal((required==0 && huge_page==NULL) || (required>0 && huge_page != NULL));
+
+  // calculate needed sizes first
+  size_t info_slices;
+  size_t pre_size;
+  size_t segment_slices = mi_segment_calculate_slices(required, &pre_size, &info_slices);
+
+  // Commit eagerly only if not the first N lazy segments (to reduce impact of many threads that allocate just a little)
+  const bool eager_delay = (// !_mi_os_has_overcommit() &&             // never delay on overcommit systems
+                            _mi_current_thread_count() > 1 &&       // do not delay for the first N threads
+                            tld->count < (size_t)mi_option_get(mi_option_eager_commit_delay));
+  const bool eager = !eager_delay && mi_option_is_enabled(mi_option_eager_commit);
+  bool commit = eager || (required > 0);
+
+  // Allocate the segment from the OS
+  mi_segment_t* segment = mi_segment_os_alloc(required, page_alignment, eager_delay, req_arena_id,
+                                              &segment_slices, &pre_size, &info_slices, commit, tld, os_tld);
+  if (segment == NULL) return NULL;
+
+  // zero the segment info? -- not always needed as it may be zero initialized from the OS
+  if (!segment->memid.initially_zero) {
+    ptrdiff_t ofs    = offsetof(mi_segment_t, next);
+    size_t    prefix = offsetof(mi_segment_t, slices) - ofs;
+    size_t    zsize  = prefix + (sizeof(mi_slice_t) * (segment_slices + 1)); // one more
+    _mi_memzero((uint8_t*)segment + ofs, zsize);
+  }
+
+  // initialize the rest of the segment info
+  const size_t slice_entries = (segment_slices > MI_SLICES_PER_SEGMENT ? MI_SLICES_PER_SEGMENT : segment_slices);
+  segment->segment_slices = segment_slices;
+  segment->segment_info_slices = info_slices;
+  segment->thread_id = _mi_thread_id();
+  segment->cookie = _mi_ptr_cookie(segment);
+  segment->slice_entries = slice_entries;
+  segment->kind = (required == 0 ? MI_SEGMENT_NORMAL : MI_SEGMENT_HUGE);
+
+  // _mi_memzero(segment->slices, sizeof(mi_slice_t)*(info_slices+1));
+  _mi_stat_increase(&tld->stats->page_committed, mi_segment_info_size(segment));
+
+  // set up guard pages
+  size_t guard_slices = 0;
+  if (MI_SECURE>0) {
+    // in secure mode, we set up a protected page in between the segment info
+    // and the page data, and at the end of the segment.
+    size_t os_pagesize = _mi_os_page_size();
+    mi_assert_internal(mi_segment_info_size(segment) - os_pagesize >= pre_size);
+    _mi_os_protect((uint8_t*)segment + mi_segment_info_size(segment) - os_pagesize, os_pagesize);
+    uint8_t* end = (uint8_t*)segment + mi_segment_size(segment) - os_pagesize;
+    mi_segment_ensure_committed(segment, end, os_pagesize, tld->stats);
+    _mi_os_protect(end, os_pagesize);
+    if (slice_entries == segment_slices) segment->slice_entries--; // don't use the last slice :-(
+    guard_slices = 1;
+  }
+
+  // reserve first slices for segment info
+  mi_page_t* page0 = mi_segment_span_allocate(segment, 0, info_slices, tld);
+  mi_assert_internal(page0!=NULL); if (page0==NULL) return NULL; // cannot fail as we always commit in advance
+  mi_assert_internal(segment->used == 1);
+  segment->used = 0; // don't count our internal slices towards usage
+
+  // initialize initial free pages
+  if (segment->kind == MI_SEGMENT_NORMAL) { // not a huge page
+    mi_assert_internal(huge_page==NULL);
+    mi_segment_span_free(segment, info_slices, segment->slice_entries - info_slices, false /* don't purge */, tld);
+  }
+  else {
+    mi_assert_internal(huge_page!=NULL);
+    mi_assert_internal(mi_commit_mask_is_empty(&segment->purge_mask));
+    mi_assert_internal(mi_commit_mask_is_full(&segment->commit_mask));
+    *huge_page = mi_segment_span_allocate(segment, info_slices, segment_slices - info_slices - guard_slices, tld);
+    mi_assert_internal(*huge_page != NULL); // cannot fail as we commit in advance
+  }
+
+  mi_assert_expensive(mi_segment_is_valid(segment,tld));
+  return segment;
+}
+
+
+static void mi_segment_free(mi_segment_t* segment, bool force, mi_segments_tld_t* tld) {
+  MI_UNUSED(force);
+  mi_assert_internal(segment != NULL);
+  mi_assert_internal(segment->next == NULL);
+  mi_assert_internal(segment->used == 0);
+
+  // Remove the free pages
+  mi_slice_t* slice = &segment->slices[0];
+  const mi_slice_t* end = mi_segment_slices_end(segment);
+  #if MI_DEBUG>1
+  size_t page_count = 0;
+  #endif
+  while (slice < end) {
+    mi_assert_internal(slice->slice_count > 0);
+    mi_assert_internal(slice->slice_offset == 0);
+    mi_assert_internal(mi_slice_index(slice)==0 || slice->xblock_size == 0); // no more used pages ..
+    if (slice->xblock_size == 0 && segment->kind != MI_SEGMENT_HUGE) {
+      mi_segment_span_remove_from_queue(slice, tld);
+    }
+    #if MI_DEBUG>1
+    page_count++;
+    #endif
+    slice = slice + slice->slice_count;
+  }
+  mi_assert_internal(page_count == 2); // first page is allocated by the segment itself
+
+  // stats
+  _mi_stat_decrease(&tld->stats->page_committed, mi_segment_info_size(segment));
+
+  // return it to the OS
+  mi_segment_os_free(segment, tld);
+}
+
+
+/* -----------------------------------------------------------
+   Page Free
+----------------------------------------------------------- */
+
+static void mi_segment_abandon(mi_segment_t* segment, mi_segments_tld_t* tld);
+
+// note: can be called on abandoned pages
+static mi_slice_t* mi_segment_page_clear(mi_page_t* page, mi_segments_tld_t* tld) {
+  mi_assert_internal(page->xblock_size > 0);
+  mi_assert_internal(mi_page_all_free(page));
+  mi_segment_t* segment = _mi_ptr_segment(page);
+  mi_assert_internal(segment->used > 0);
+
+  size_t inuse = page->capacity * mi_page_block_size(page);
+  _mi_stat_decrease(&tld->stats->page_committed, inuse);
+  _mi_stat_decrease(&tld->stats->pages, 1);
+
+  // reset the page memory to reduce memory pressure?
+  if (segment->allow_decommit && mi_option_is_enabled(mi_option_deprecated_page_reset)) {
+    size_t psize;
+    uint8_t* start = _mi_page_start(segment, page, &psize);
+    _mi_os_reset(start, psize, tld->stats);
+  }
+
+  // zero the page data, but not the segment fields
+  page->is_zero_init = false;
+  ptrdiff_t ofs = offsetof(mi_page_t, capacity);
+  _mi_memzero((uint8_t*)page + ofs, sizeof(*page) - ofs);
+  page->xblock_size = 1;
+
+  // and free it
+  mi_slice_t* slice = mi_segment_span_free_coalesce(mi_page_to_slice(page), tld);
+  segment->used--;
+  // cannot assert segment valid as it is called during reclaim
+  // mi_assert_expensive(mi_segment_is_valid(segment, tld));
+  return slice;
+}
+
+void _mi_segment_page_free(mi_page_t* page, bool force, mi_segments_tld_t* tld)
+{
+  mi_assert(page != NULL);
+
+  mi_segment_t* segment = _mi_page_segment(page);
+  mi_assert_expensive(mi_segment_is_valid(segment,tld));
+
+  // mark it as free now
+  mi_segment_page_clear(page, tld);
+  mi_assert_expensive(mi_segment_is_valid(segment, tld));
+
+  if (segment->used == 0) {
+    // no more used pages; remove from the free list and free the segment
+    mi_segment_free(segment, force, tld);
+  }
+  else if (segment->used == segment->abandoned) {
+    // only abandoned pages; remove from free list and abandon
+    mi_segment_abandon(segment,tld);
+  }
+}
+
+
+/* -----------------------------------------------------------
+Abandonment
+
+When threads terminate, they can leave segments with
+live blocks (reachable through other threads). Such segments
+are "abandoned" and will be reclaimed by other threads to
+reuse their pages and/or free them eventually
+
+We maintain a global list of abandoned segments that are
+reclaimed on demand. Since this is shared among threads
+the implementation needs to avoid the A-B-A problem on
+popping abandoned segments: <https://en.wikipedia.org/wiki/ABA_problem>
+We use tagged pointers to avoid accidentally identifying
+reused segments, much like stamped references in Java.
+Secondly, we maintain a reader counter to avoid resetting
+or decommitting segments that have a pending read operation.
+
+Note: the current implementation is one possible design;
+another way might be to keep track of abandoned segments
+in the arenas/segment_cache's. This would have the advantage of keeping
+all concurrent code in one place and not needing to deal
+with ABA issues. The drawback is that it is unclear how to
+scan abandoned segments efficiently in that case as they
+would be spread among all other segments in the arenas.
+----------------------------------------------------------- */
+
+// Use the bottom 20-bits (on 64-bit) of the aligned segment pointers
+// to put in a tag that increments on update to avoid the A-B-A problem.
+#define MI_TAGGED_MASK   MI_SEGMENT_MASK
+typedef uintptr_t        mi_tagged_segment_t;
+
+static mi_segment_t* mi_tagged_segment_ptr(mi_tagged_segment_t ts) {
+  return (mi_segment_t*)(ts & ~MI_TAGGED_MASK);
+}
+
+static mi_tagged_segment_t mi_tagged_segment(mi_segment_t* segment, mi_tagged_segment_t ts) {
+  mi_assert_internal(((uintptr_t)segment & MI_TAGGED_MASK) == 0);
+  uintptr_t tag = ((ts & MI_TAGGED_MASK) + 1) & MI_TAGGED_MASK;
+  return ((uintptr_t)segment | tag);
+}
+
+// This is a list of visited abandoned pages that were full at the time.
+// this list migrates to `abandoned` when that becomes NULL. The use of
+// this list reduces contention and the rate at which segments are visited.
+static mi_decl_cache_align _Atomic(mi_segment_t*)       abandoned_visited; // = NULL
+
+// The abandoned page list (tagged as it supports pop)
+static mi_decl_cache_align _Atomic(mi_tagged_segment_t) abandoned;         // = NULL
+
+// Maintain these for debug purposes (these counts may be a bit off)
+static mi_decl_cache_align _Atomic(size_t)           abandoned_count;
+static mi_decl_cache_align _Atomic(size_t)           abandoned_visited_count;
+
+// We also maintain a count of current readers of the abandoned list
+// in order to prevent resetting/decommitting segment memory if it might
+// still be read.
+static mi_decl_cache_align _Atomic(size_t)           abandoned_readers; // = 0
+
+// Push on the visited list
+static void mi_abandoned_visited_push(mi_segment_t* segment) {
+  mi_assert_internal(segment->thread_id == 0);
+  mi_assert_internal(mi_atomic_load_ptr_relaxed(mi_segment_t,&segment->abandoned_next) == NULL);
+  mi_assert_internal(segment->next == NULL);
+  mi_assert_internal(segment->used > 0);
+  mi_segment_t* anext = mi_atomic_load_ptr_relaxed(mi_segment_t, &abandoned_visited);
+  do {
+    mi_atomic_store_ptr_release(mi_segment_t, &segment->abandoned_next, anext);
+  } while (!mi_atomic_cas_ptr_weak_release(mi_segment_t, &abandoned_visited, &anext, segment));
+  mi_atomic_increment_relaxed(&abandoned_visited_count);
+}
+
+// Move the visited list to the abandoned list.
+static bool mi_abandoned_visited_revisit(void)
+{
+  // quick check if the visited list is empty
+  if (mi_atomic_load_ptr_relaxed(mi_segment_t, &abandoned_visited) == NULL) return false;
+
+  // grab the whole visited list
+  mi_segment_t* first = mi_atomic_exchange_ptr_acq_rel(mi_segment_t, &abandoned_visited, NULL);
+  if (first == NULL) return false;
+
+  // first try to swap directly if the abandoned list happens to be NULL
+  mi_tagged_segment_t afirst;
+  mi_tagged_segment_t ts = mi_atomic_load_relaxed(&abandoned);
+  if (mi_tagged_segment_ptr(ts)==NULL) {
+    size_t count = mi_atomic_load_relaxed(&abandoned_visited_count);
+    afirst = mi_tagged_segment(first, ts);
+    if (mi_atomic_cas_strong_acq_rel(&abandoned, &ts, afirst)) {
+      mi_atomic_add_relaxed(&abandoned_count, count);
+      mi_atomic_sub_relaxed(&abandoned_visited_count, count);
+      return true;
+    }
+  }
+
+  // find the last element of the visited list: O(n)
+  mi_segment_t* last = first;
+  mi_segment_t* next;
+  while ((next = mi_atomic_load_ptr_relaxed(mi_segment_t, &last->abandoned_next)) != NULL) {
+    last = next;
+  }
+
+  // and atomically prepend to the abandoned list
+  // (no need to increase the readers as we don't access the abandoned segments)
+  mi_tagged_segment_t anext = mi_atomic_load_relaxed(&abandoned);
+  size_t count;
+  do {
+    count = mi_atomic_load_relaxed(&abandoned_visited_count);
+    mi_atomic_store_ptr_release(mi_segment_t, &last->abandoned_next, mi_tagged_segment_ptr(anext));
+    afirst = mi_tagged_segment(first, anext);
+  } while (!mi_atomic_cas_weak_release(&abandoned, &anext, afirst));
+  mi_atomic_add_relaxed(&abandoned_count, count);
+  mi_atomic_sub_relaxed(&abandoned_visited_count, count);
+  return true;
+}
+
+// Push on the abandoned list.
+static void mi_abandoned_push(mi_segment_t* segment) {
+  mi_assert_internal(segment->thread_id == 0);
+  mi_assert_internal(mi_atomic_load_ptr_relaxed(mi_segment_t, &segment->abandoned_next) == NULL);
+  mi_assert_internal(segment->next == NULL);
+  mi_assert_internal(segment->used > 0);
+  mi_tagged_segment_t next;
+  mi_tagged_segment_t ts = mi_atomic_load_relaxed(&abandoned);
+  do {
+    mi_atomic_store_ptr_release(mi_segment_t, &segment->abandoned_next, mi_tagged_segment_ptr(ts));
+    next = mi_tagged_segment(segment, ts);
+  } while (!mi_atomic_cas_weak_release(&abandoned, &ts, next));
+  mi_atomic_increment_relaxed(&abandoned_count);
+}
+
+// Wait until there are no more pending reads on segments that used to be in the abandoned list
+// called for example from `arena.c` before decommitting
+void _mi_abandoned_await_readers(void) {
+  size_t n;
+  do {
+    n = mi_atomic_load_acquire(&abandoned_readers);
+    if (n != 0) mi_atomic_yield();
+  } while (n != 0);
+}
+
+// Pop from the abandoned list
+static mi_segment_t* mi_abandoned_pop(void) {
+  mi_segment_t* segment;
+  // Check efficiently if it is empty (or if the visited list needs to be moved)
+  mi_tagged_segment_t ts = mi_atomic_load_relaxed(&abandoned);
+  segment = mi_tagged_segment_ptr(ts);
+  if mi_likely(segment == NULL) {
+    if mi_likely(!mi_abandoned_visited_revisit()) { // try to swap in the visited list on NULL
+      return NULL;
+    }
+  }
+
+  // Do a pop. We use a reader count to prevent
+  // a segment to be decommitted while a read is still pending,
+  // and a tagged pointer to prevent A-B-A link corruption.
+  // (this is called from `region.c:_mi_mem_free` for example)
+  mi_atomic_increment_relaxed(&abandoned_readers);  // ensure no segment gets decommitted
+  mi_tagged_segment_t next = 0;
+  ts = mi_atomic_load_acquire(&abandoned);
+  do {
+    segment = mi_tagged_segment_ptr(ts);
+    if (segment != NULL) {
+      mi_segment_t* anext = mi_atomic_load_ptr_relaxed(mi_segment_t, &segment->abandoned_next);
+      next = mi_tagged_segment(anext, ts); // note: reads the segment's `abandoned_next` field so should not be decommitted
+    }
+  } while (segment != NULL && !mi_atomic_cas_weak_acq_rel(&abandoned, &ts, next));
+  mi_atomic_decrement_relaxed(&abandoned_readers);  // release reader lock
+  if (segment != NULL) {
+    mi_atomic_store_ptr_release(mi_segment_t, &segment->abandoned_next, NULL);
+    mi_atomic_decrement_relaxed(&abandoned_count);
+  }
+  return segment;
+}
+
+/* -----------------------------------------------------------
+   Abandon segment/page
+----------------------------------------------------------- */
+
+static void mi_segment_abandon(mi_segment_t* segment, mi_segments_tld_t* tld) {
+  mi_assert_internal(segment->used == segment->abandoned);
+  mi_assert_internal(segment->used > 0);
+  mi_assert_internal(mi_atomic_load_ptr_relaxed(mi_segment_t, &segment->abandoned_next) == NULL);
+  mi_assert_internal(segment->abandoned_visits == 0);
+  mi_assert_expensive(mi_segment_is_valid(segment,tld));
+
+  // remove the free pages from the free page queues
+  mi_slice_t* slice = &segment->slices[0];
+  const mi_slice_t* end = mi_segment_slices_end(segment);
+  while (slice < end) {
+    mi_assert_internal(slice->slice_count > 0);
+    mi_assert_internal(slice->slice_offset == 0);
+    if (slice->xblock_size == 0) { // a free page
+      mi_segment_span_remove_from_queue(slice,tld);
+      slice->xblock_size = 0; // but keep it free
+    }
+    slice = slice + slice->slice_count;
+  }
+
+  // perform delayed decommits (forcing is much slower on mstress)
+  mi_segment_try_purge(segment, mi_option_is_enabled(mi_option_abandoned_page_purge) /* force? */, tld->stats);
+
+  // all pages in the segment are abandoned; add it to the abandoned list
+  _mi_stat_increase(&tld->stats->segments_abandoned, 1);
+  mi_segments_track_size(-((long)mi_segment_size(segment)), tld);
+  segment->thread_id = 0;
+  mi_atomic_store_ptr_release(mi_segment_t, &segment->abandoned_next, NULL);
+  segment->abandoned_visits = 1;   // from 0 to 1 to signify it is abandoned
+  mi_abandoned_push(segment);
+}
+
+void _mi_segment_page_abandon(mi_page_t* page, mi_segments_tld_t* tld) {
+  mi_assert(page != NULL);
+  mi_assert_internal(mi_page_thread_free_flag(page)==MI_NEVER_DELAYED_FREE);
+  mi_assert_internal(mi_page_heap(page) == NULL);
+  mi_segment_t* segment = _mi_page_segment(page);
+
+  mi_assert_expensive(mi_segment_is_valid(segment,tld));
+  segment->abandoned++;
+
+  _mi_stat_increase(&tld->stats->pages_abandoned, 1);
+  mi_assert_internal(segment->abandoned <= segment->used);
+  if (segment->used == segment->abandoned) {
+    // all pages are abandoned, abandon the entire segment
+    mi_segment_abandon(segment, tld);
+  }
+}
+
+/* -----------------------------------------------------------
+  Reclaim abandoned pages
+----------------------------------------------------------- */
+
+static mi_slice_t* mi_slices_start_iterate(mi_segment_t* segment, const mi_slice_t** end) {
+  mi_slice_t* slice = &segment->slices[0];
+  *end = mi_segment_slices_end(segment);
+  mi_assert_internal(slice->slice_count>0 && slice->xblock_size>0); // segment allocated page
+  slice = slice + slice->slice_count; // skip the first segment allocated page
+  return slice;
+}
+
+// Possibly free pages and check if free space is available
+static bool mi_segment_check_free(mi_segment_t* segment, size_t slices_needed, size_t block_size, mi_segments_tld_t* tld)
+{
+  mi_assert_internal(block_size < MI_HUGE_BLOCK_SIZE);
+  mi_assert_internal(mi_segment_is_abandoned(segment));
+  bool has_page = false;
+
+  // for all slices
+  const mi_slice_t* end;
+  mi_slice_t* slice = mi_slices_start_iterate(segment, &end);
+  while (slice < end) {
+    mi_assert_internal(slice->slice_count > 0);
+    mi_assert_internal(slice->slice_offset == 0);
+    if (mi_slice_is_used(slice)) { // used page
+      // ensure used count is up to date and collect potential concurrent frees
+      mi_page_t* const page = mi_slice_to_page(slice);
+      _mi_page_free_collect(page, false);
+      if (mi_page_all_free(page)) {
+        // if this page is all free now, free it without adding to any queues (yet)
+        mi_assert_internal(page->next == NULL && page->prev==NULL);
+        _mi_stat_decrease(&tld->stats->pages_abandoned, 1);
+        segment->abandoned--;
+        slice = mi_segment_page_clear(page, tld); // re-assign slice due to coalesce!
+        mi_assert_internal(!mi_slice_is_used(slice));
+        if (slice->slice_count >= slices_needed) {
+          has_page = true;
+        }
+      }
+      else {
+        if (page->xblock_size == block_size && mi_page_has_any_available(page)) {
+          // a page has available free blocks of the right size
+          has_page = true;
+        }
+      }
+    }
+    else {
+      // empty span
+      if (slice->slice_count >= slices_needed) {
+        has_page = true;
+      }
+    }
+    slice = slice + slice->slice_count;
+  }
+  return has_page;
+}
+
+// Reclaim an abandoned segment; returns NULL if the segment was freed
+// set `right_page_reclaimed` to `true` if it reclaimed a page of the right `block_size` that was not full.
+static mi_segment_t* mi_segment_reclaim(mi_segment_t* segment, mi_heap_t* heap, size_t requested_block_size, bool* right_page_reclaimed, mi_segments_tld_t* tld) {
+  mi_assert_internal(mi_atomic_load_ptr_relaxed(mi_segment_t, &segment->abandoned_next) == NULL);
+  mi_assert_expensive(mi_segment_is_valid(segment, tld));
+  if (right_page_reclaimed != NULL) { *right_page_reclaimed = false; }
+
+  segment->thread_id = _mi_thread_id();
+  segment->abandoned_visits = 0;
+  mi_segments_track_size((long)mi_segment_size(segment), tld);
+  mi_assert_internal(segment->next == NULL);
+  _mi_stat_decrease(&tld->stats->segments_abandoned, 1);
+
+  // for all slices
+  const mi_slice_t* end;
+  mi_slice_t* slice = mi_slices_start_iterate(segment, &end);
+  while (slice < end) {
+    mi_assert_internal(slice->slice_count > 0);
+    mi_assert_internal(slice->slice_offset == 0);
+    if (mi_slice_is_used(slice)) {
+      // in use: reclaim the page in our heap
+      mi_page_t* page = mi_slice_to_page(slice);
+      mi_assert_internal(page->is_committed);
+      mi_assert_internal(mi_page_thread_free_flag(page)==MI_NEVER_DELAYED_FREE);
+      mi_assert_internal(mi_page_heap(page) == NULL);
+      mi_assert_internal(page->next == NULL && page->prev==NULL);
+      _mi_stat_decrease(&tld->stats->pages_abandoned, 1);
+      segment->abandoned--;
+      // set the heap again and allow delayed free again
+      mi_page_set_heap(page, heap);
+      _mi_page_use_delayed_free(page, MI_USE_DELAYED_FREE, true); // override never (after heap is set)
+      _mi_page_free_collect(page, false); // ensure used count is up to date
+      if (mi_page_all_free(page)) {
+        // if everything free by now, free the page
+        slice = mi_segment_page_clear(page, tld);   // set slice again due to coalesceing
+      }
+      else {
+        // otherwise reclaim it into the heap
+        _mi_page_reclaim(heap, page);
+        if (requested_block_size == page->xblock_size && mi_page_has_any_available(page)) {
+          if (right_page_reclaimed != NULL) { *right_page_reclaimed = true; }
+        }
+      }
+    }
+    else {
+      // the span is free, add it to our page queues
+      slice = mi_segment_span_free_coalesce(slice, tld); // set slice again due to coalesceing
+    }
+    mi_assert_internal(slice->slice_count>0 && slice->slice_offset==0);
+    slice = slice + slice->slice_count;
+  }
+
+  mi_assert(segment->abandoned == 0);
+  if (segment->used == 0) {  // due to page_clear
+    mi_assert_internal(right_page_reclaimed == NULL || !(*right_page_reclaimed));
+    mi_segment_free(segment, false, tld);
+    return NULL;
+  }
+  else {
+    return segment;
+  }
+}
+
+
+void _mi_abandoned_reclaim_all(mi_heap_t* heap, mi_segments_tld_t* tld) {
+  mi_segment_t* segment;
+  while ((segment = mi_abandoned_pop()) != NULL) {
+    mi_segment_reclaim(segment, heap, 0, NULL, tld);
+  }
+}
+
+static mi_segment_t* mi_segment_try_reclaim(mi_heap_t* heap, size_t needed_slices, size_t block_size, bool* reclaimed, mi_segments_tld_t* tld)
+{
+  *reclaimed = false;
+  mi_segment_t* segment;
+  long max_tries = mi_option_get_clamp(mi_option_max_segment_reclaim, 8, 1024);     // limit the work to bound allocation times
+  while ((max_tries-- > 0) && ((segment = mi_abandoned_pop()) != NULL)) {
+    segment->abandoned_visits++;
+    // todo: an arena exclusive heap will potentially visit many abandoned unsuitable segments
+    // and push them into the visited list and use many tries. Perhaps we can skip non-suitable ones in a better way?
+    bool is_suitable = _mi_heap_memid_is_suitable(heap, segment->memid);
+    bool has_page = mi_segment_check_free(segment,needed_slices,block_size,tld); // try to free up pages (due to concurrent frees)
+    if (segment->used == 0) {
+      // free the segment (by forced reclaim) to make it available to other threads.
+      // note1: we prefer to free a segment as that might lead to reclaiming another
+      // segment that is still partially used.
+      // note2: we could in principle optimize this by skipping reclaim and directly
+      // freeing but that would violate some invariants temporarily)
+      mi_segment_reclaim(segment, heap, 0, NULL, tld);
+    }
+    else if (has_page && is_suitable) {
+      // found a large enough free span, or a page of the right block_size with free space
+      // we return the result of reclaim (which is usually `segment`) as it might free
+      // the segment due to concurrent frees (in which case `NULL` is returned).
+      return mi_segment_reclaim(segment, heap, block_size, reclaimed, tld);
+    }
+    else if (segment->abandoned_visits > 3 && is_suitable) {
+      // always reclaim on 3rd visit to limit the abandoned queue length.
+      mi_segment_reclaim(segment, heap, 0, NULL, tld);
+    }
+    else {
+      // otherwise, push on the visited list so it gets not looked at too quickly again
+      mi_segment_try_purge(segment, true /* force? */, tld->stats); // force purge if needed as we may not visit soon again
+      mi_abandoned_visited_push(segment);
+    }
+  }
+  return NULL;
+}
+
+
+void _mi_abandoned_collect(mi_heap_t* heap, bool force, mi_segments_tld_t* tld)
+{
+  mi_segment_t* segment;
+  int max_tries = (force ? 16*1024 : 1024); // limit latency
+  if (force) {
+    mi_abandoned_visited_revisit();
+  }
+  while ((max_tries-- > 0) && ((segment = mi_abandoned_pop()) != NULL)) {
+    mi_segment_check_free(segment,0,0,tld); // try to free up pages (due to concurrent frees)
+    if (segment->used == 0) {
+      // free the segment (by forced reclaim) to make it available to other threads.
+      // note: we could in principle optimize this by skipping reclaim and directly
+      // freeing but that would violate some invariants temporarily)
+      mi_segment_reclaim(segment, heap, 0, NULL, tld);
+    }
+    else {
+      // otherwise, purge if needed and push on the visited list
+      // note: forced purge can be expensive if many threads are destroyed/created as in mstress.
+      mi_segment_try_purge(segment, force, tld->stats);
+      mi_abandoned_visited_push(segment);
+    }
+  }
+}
+
+/* -----------------------------------------------------------
+   Reclaim or allocate
+----------------------------------------------------------- */
+
+static mi_segment_t* mi_segment_reclaim_or_alloc(mi_heap_t* heap, size_t needed_slices, size_t block_size, mi_segments_tld_t* tld, mi_os_tld_t* os_tld)
+{
+  mi_assert_internal(block_size < MI_HUGE_BLOCK_SIZE);
+  mi_assert_internal(block_size <= MI_LARGE_OBJ_SIZE_MAX);
+
+  // 1. try to reclaim an abandoned segment
+  bool reclaimed;
+  mi_segment_t* segment = mi_segment_try_reclaim(heap, needed_slices, block_size, &reclaimed, tld);
+  if (reclaimed) {
+    // reclaimed the right page right into the heap
+    mi_assert_internal(segment != NULL);
+    return NULL; // pretend out-of-memory as the page will be in the page queue of the heap with available blocks
+  }
+  else if (segment != NULL) {
+    // reclaimed a segment with a large enough empty span in it
+    return segment;
+  }
+  // 2. otherwise allocate a fresh segment
+  return mi_segment_alloc(0, 0, heap->arena_id, tld, os_tld, NULL);
+}
+
+
+/* -----------------------------------------------------------
+   Page allocation
+----------------------------------------------------------- */
+
+static mi_page_t* mi_segments_page_alloc(mi_heap_t* heap, mi_page_kind_t page_kind, size_t required, size_t block_size, mi_segments_tld_t* tld, mi_os_tld_t* os_tld)
+{
+  mi_assert_internal(required <= MI_LARGE_OBJ_SIZE_MAX && page_kind <= MI_PAGE_LARGE);
+
+  // find a free page
+  size_t page_size = _mi_align_up(required, (required > MI_MEDIUM_PAGE_SIZE ? MI_MEDIUM_PAGE_SIZE : MI_SEGMENT_SLICE_SIZE));
+  size_t slices_needed = page_size / MI_SEGMENT_SLICE_SIZE;
+  mi_assert_internal(slices_needed * MI_SEGMENT_SLICE_SIZE == page_size);
+  mi_page_t* page = mi_segments_page_find_and_allocate(slices_needed, heap->arena_id, tld); //(required <= MI_SMALL_SIZE_MAX ? 0 : slices_needed), tld);
+  if (page==NULL) {
+    // no free page, allocate a new segment and try again
+    if (mi_segment_reclaim_or_alloc(heap, slices_needed, block_size, tld, os_tld) == NULL) {
+      // OOM or reclaimed a good page in the heap
+      return NULL;
+    }
+    else {
+      // otherwise try again
+      return mi_segments_page_alloc(heap, page_kind, required, block_size, tld, os_tld);
+    }
+  }
+  mi_assert_internal(page != NULL && page->slice_count*MI_SEGMENT_SLICE_SIZE == page_size);
+  mi_assert_internal(_mi_ptr_segment(page)->thread_id == _mi_thread_id());
+  mi_segment_try_purge(_mi_ptr_segment(page), false, tld->stats);
+  return page;
+}
+
+
+
+/* -----------------------------------------------------------
+   Huge page allocation
+----------------------------------------------------------- */
+
+static mi_page_t* mi_segment_huge_page_alloc(size_t size, size_t page_alignment, mi_arena_id_t req_arena_id, mi_segments_tld_t* tld, mi_os_tld_t* os_tld)
+{
+  mi_page_t* page = NULL;
+  mi_segment_t* segment = mi_segment_alloc(size,page_alignment,req_arena_id,tld,os_tld,&page);
+  if (segment == NULL || page==NULL) return NULL;
+  mi_assert_internal(segment->used==1);
+  mi_assert_internal(mi_page_block_size(page) >= size);
+  #if MI_HUGE_PAGE_ABANDON
+  segment->thread_id = 0; // huge segments are immediately abandoned
+  #endif
+
+  // for huge pages we initialize the xblock_size as we may
+  // overallocate to accommodate large alignments.
+  size_t psize;
+  uint8_t* start = _mi_segment_page_start(segment, page, &psize);
+  page->xblock_size = (psize > MI_HUGE_BLOCK_SIZE ? MI_HUGE_BLOCK_SIZE : (uint32_t)psize);
+
+  // decommit the part of the prefix of a page that will not be used; this can be quite large (close to MI_SEGMENT_SIZE)
+  if (page_alignment > 0 && segment->allow_decommit) {
+    uint8_t* aligned_p = (uint8_t*)_mi_align_up((uintptr_t)start, page_alignment);
+    mi_assert_internal(_mi_is_aligned(aligned_p, page_alignment));
+    mi_assert_internal(psize - (aligned_p - start) >= size);
+    uint8_t* decommit_start = start + sizeof(mi_block_t);              // for the free list
+    ptrdiff_t decommit_size = aligned_p - decommit_start;
+    _mi_os_reset(decommit_start, decommit_size, &_mi_stats_main);   // note: cannot use segment_decommit on huge segments
+  }
+
+  return page;
+}
+
+#if MI_HUGE_PAGE_ABANDON
+// free huge block from another thread
+void _mi_segment_huge_page_free(mi_segment_t* segment, mi_page_t* page, mi_block_t* block) {
+  // huge page segments are always abandoned and can be freed immediately by any thread
+  mi_assert_internal(segment->kind==MI_SEGMENT_HUGE);
+  mi_assert_internal(segment == _mi_page_segment(page));
+  mi_assert_internal(mi_atomic_load_relaxed(&segment->thread_id)==0);
+
+  // claim it and free
+  mi_heap_t* heap = mi_heap_get_default(); // issue #221; don't use the internal get_default_heap as we need to ensure the thread is initialized.
+  // paranoia: if this it the last reference, the cas should always succeed
+  size_t expected_tid = 0;
+  if (mi_atomic_cas_strong_acq_rel(&segment->thread_id, &expected_tid, heap->thread_id)) {
+    mi_block_set_next(page, block, page->free);
+    page->free = block;
+    page->used--;
+    page->is_zero = false;
+    mi_assert(page->used == 0);
+    mi_tld_t* tld = heap->tld;
+    _mi_segment_page_free(page, true, &tld->segments);
+  }
+#if (MI_DEBUG!=0)
+  else {
+    mi_assert_internal(false);
+  }
+#endif
+}
+
+#else
+// reset memory of a huge block from another thread
+void _mi_segment_huge_page_reset(mi_segment_t* segment, mi_page_t* page, mi_block_t* block) {
+  MI_UNUSED(page);
+  mi_assert_internal(segment->kind == MI_SEGMENT_HUGE);
+  mi_assert_internal(segment == _mi_page_segment(page));
+  mi_assert_internal(page->used == 1); // this is called just before the free
+  mi_assert_internal(page->free == NULL);
+  if (segment->allow_decommit) {
+    size_t csize = mi_usable_size(block);
+    if (csize > sizeof(mi_block_t)) {
+      csize = csize - sizeof(mi_block_t);
+      uint8_t* p = (uint8_t*)block + sizeof(mi_block_t);
+      _mi_os_reset(p, csize, &_mi_stats_main);  // note: cannot use segment_decommit on huge segments
+    }
+  }
+}
+#endif
+
+/* -----------------------------------------------------------
+   Page allocation and free
+----------------------------------------------------------- */
+mi_page_t* _mi_segment_page_alloc(mi_heap_t* heap, size_t block_size, size_t page_alignment, mi_segments_tld_t* tld, mi_os_tld_t* os_tld) {
+  mi_page_t* page;
+  if mi_unlikely(page_alignment > MI_ALIGNMENT_MAX) {
+    mi_assert_internal(_mi_is_power_of_two(page_alignment));
+    mi_assert_internal(page_alignment >= MI_SEGMENT_SIZE);
+    if (page_alignment < MI_SEGMENT_SIZE) { page_alignment = MI_SEGMENT_SIZE; }
+    page = mi_segment_huge_page_alloc(block_size,page_alignment,heap->arena_id,tld,os_tld);
+  }
+  else if (block_size <= MI_SMALL_OBJ_SIZE_MAX) {
+    page = mi_segments_page_alloc(heap,MI_PAGE_SMALL,block_size,block_size,tld,os_tld);
+  }
+  else if (block_size <= MI_MEDIUM_OBJ_SIZE_MAX) {
+    page = mi_segments_page_alloc(heap,MI_PAGE_MEDIUM,MI_MEDIUM_PAGE_SIZE,block_size,tld, os_tld);
+  }
+  else if (block_size <= MI_LARGE_OBJ_SIZE_MAX) {
+    page = mi_segments_page_alloc(heap,MI_PAGE_LARGE,block_size,block_size,tld, os_tld);
+  }
+  else {
+    page = mi_segment_huge_page_alloc(block_size,page_alignment,heap->arena_id,tld,os_tld);
+  }
+  mi_assert_internal(page == NULL || _mi_heap_memid_is_suitable(heap, _mi_page_segment(page)->memid));
+  mi_assert_expensive(page == NULL || mi_segment_is_valid(_mi_page_segment(page),tld));
+  return page;
+}
diff --git a/Objects/mimalloc/static.c b/Objects/mimalloc/static.c
new file mode 100644
index 00000000000000..98c4aa18e450cd
--- /dev/null
+++ b/Objects/mimalloc/static.c
@@ -0,0 +1,40 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE
+#endif
+#if defined(__sun)
+// same remarks as os.c for the static's context.
+#undef _XOPEN_SOURCE
+#undef _POSIX_C_SOURCE
+#endif
+
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+
+// For a static override we create a single object file
+// containing the whole library. If it is linked first
+// it will override all the standard library allocation
+// functions (on Unix's).
+#include "alloc.c"          // includes alloc-override.c
+#include "alloc-aligned.c"
+#include "alloc-posix.c"
+#include "arena.c"
+#include "bitmap.c"
+#include "heap.c"
+#include "init.c"
+#include "options.c"
+#include "os.c"
+#include "page.c"           // includes page-queue.c
+#include "random.c"
+#include "segment.c"
+#include "segment-map.c"
+#include "stats.c"
+#include "prim/prim.c"
+#if MI_OSX_ZONE
+#include "prim/osx/alloc-override-zone.c"
+#endif
diff --git a/Objects/mimalloc/stats.c b/Objects/mimalloc/stats.c
new file mode 100644
index 00000000000000..e7ea397ec4c384
--- /dev/null
+++ b/Objects/mimalloc/stats.c
@@ -0,0 +1,467 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+#include "mimalloc/internal.h"
+#include "mimalloc/atomic.h"
+#include "mimalloc/prim.h"
+
+#include <stdio.h>  // snprintf
+#include <string.h> // memset
+
+#if defined(_MSC_VER) && (_MSC_VER < 1920)
+#pragma warning(disable:4204)  // non-constant aggregate initializer
+#endif
+
+/* -----------------------------------------------------------
+  Statistics operations
+----------------------------------------------------------- */
+
+static bool mi_is_in_main(void* stat) {
+  return ((uint8_t*)stat >= (uint8_t*)&_mi_stats_main
+         && (uint8_t*)stat < ((uint8_t*)&_mi_stats_main + sizeof(mi_stats_t)));
+}
+
+static void mi_stat_update(mi_stat_count_t* stat, int64_t amount) {
+  if (amount == 0) return;
+  if (mi_is_in_main(stat))
+  {
+    // add atomically (for abandoned pages)
+    int64_t current = mi_atomic_addi64_relaxed(&stat->current, amount);
+    mi_atomic_maxi64_relaxed(&stat->peak, current + amount);
+    if (amount > 0) {
+      mi_atomic_addi64_relaxed(&stat->allocated,amount);
+    }
+    else {
+      mi_atomic_addi64_relaxed(&stat->freed, -amount);
+    }
+  }
+  else {
+    // add thread local
+    stat->current += amount;
+    if (stat->current > stat->peak) stat->peak = stat->current;
+    if (amount > 0) {
+      stat->allocated += amount;
+    }
+    else {
+      stat->freed += -amount;
+    }
+  }
+}
+
+void _mi_stat_counter_increase(mi_stat_counter_t* stat, size_t amount) {
+  if (mi_is_in_main(stat)) {
+    mi_atomic_addi64_relaxed( &stat->count, 1 );
+    mi_atomic_addi64_relaxed( &stat->total, (int64_t)amount );
+  }
+  else {
+    stat->count++;
+    stat->total += amount;
+  }
+}
+
+void _mi_stat_increase(mi_stat_count_t* stat, size_t amount) {
+  mi_stat_update(stat, (int64_t)amount);
+}
+
+void _mi_stat_decrease(mi_stat_count_t* stat, size_t amount) {
+  mi_stat_update(stat, -((int64_t)amount));
+}
+
+// must be thread safe as it is called from stats_merge
+static void mi_stat_add(mi_stat_count_t* stat, const mi_stat_count_t* src, int64_t unit) {
+  if (stat==src) return;
+  if (src->allocated==0 && src->freed==0) return;
+  mi_atomic_addi64_relaxed( &stat->allocated, src->allocated * unit);
+  mi_atomic_addi64_relaxed( &stat->current, src->current * unit);
+  mi_atomic_addi64_relaxed( &stat->freed, src->freed * unit);
+  // peak scores do not work across threads..
+  mi_atomic_addi64_relaxed( &stat->peak, src->peak * unit);
+}
+
+static void mi_stat_counter_add(mi_stat_counter_t* stat, const mi_stat_counter_t* src, int64_t unit) {
+  if (stat==src) return;
+  mi_atomic_addi64_relaxed( &stat->total, src->total * unit);
+  mi_atomic_addi64_relaxed( &stat->count, src->count * unit);
+}
+
+// must be thread safe as it is called from stats_merge
+static void mi_stats_add(mi_stats_t* stats, const mi_stats_t* src) {
+  if (stats==src) return;
+  mi_stat_add(&stats->segments, &src->segments,1);
+  mi_stat_add(&stats->pages, &src->pages,1);
+  mi_stat_add(&stats->reserved, &src->reserved, 1);
+  mi_stat_add(&stats->committed, &src->committed, 1);
+  mi_stat_add(&stats->reset, &src->reset, 1);
+  mi_stat_add(&stats->purged, &src->purged, 1);
+  mi_stat_add(&stats->page_committed, &src->page_committed, 1);
+
+  mi_stat_add(&stats->pages_abandoned, &src->pages_abandoned, 1);
+  mi_stat_add(&stats->segments_abandoned, &src->segments_abandoned, 1);
+  mi_stat_add(&stats->threads, &src->threads, 1);
+
+  mi_stat_add(&stats->malloc, &src->malloc, 1);
+  mi_stat_add(&stats->segments_cache, &src->segments_cache, 1);
+  mi_stat_add(&stats->normal, &src->normal, 1);
+  mi_stat_add(&stats->huge, &src->huge, 1);
+  mi_stat_add(&stats->large, &src->large, 1);
+
+  mi_stat_counter_add(&stats->pages_extended, &src->pages_extended, 1);
+  mi_stat_counter_add(&stats->mmap_calls, &src->mmap_calls, 1);
+  mi_stat_counter_add(&stats->commit_calls, &src->commit_calls, 1);
+  mi_stat_counter_add(&stats->reset_calls, &src->reset_calls, 1);
+  mi_stat_counter_add(&stats->purge_calls, &src->purge_calls, 1);
+
+  mi_stat_counter_add(&stats->page_no_retire, &src->page_no_retire, 1);
+  mi_stat_counter_add(&stats->searches, &src->searches, 1);
+  mi_stat_counter_add(&stats->normal_count, &src->normal_count, 1);
+  mi_stat_counter_add(&stats->huge_count, &src->huge_count, 1);
+  mi_stat_counter_add(&stats->large_count, &src->large_count, 1);
+#if MI_STAT>1
+  for (size_t i = 0; i <= MI_BIN_HUGE; i++) {
+    if (src->normal_bins[i].allocated > 0 || src->normal_bins[i].freed > 0) {
+      mi_stat_add(&stats->normal_bins[i], &src->normal_bins[i], 1);
+    }
+  }
+#endif
+}
+
+/* -----------------------------------------------------------
+  Display statistics
+----------------------------------------------------------- */
+
+// unit > 0 : size in binary bytes
+// unit == 0: count as decimal
+// unit < 0 : count in binary
+static void mi_printf_amount(int64_t n, int64_t unit, mi_output_fun* out, void* arg, const char* fmt) {
+  char buf[32]; buf[0] = 0;
+  int  len = 32;
+  const char* suffix = (unit <= 0 ? " " : "B");
+  const int64_t base = (unit == 0 ? 1000 : 1024);
+  if (unit>0) n *= unit;
+
+  const int64_t pos = (n < 0 ? -n : n);
+  if (pos < base) {
+    if (n!=1 || suffix[0] != 'B') {  // skip printing 1 B for the unit column
+      snprintf(buf, len, "%d   %-3s", (int)n, (n==0 ? "" : suffix));
+    }
+  }
+  else {
+    int64_t divider = base;
+    const char* magnitude = "K";
+    if (pos >= divider*base) { divider *= base; magnitude = "M"; }
+    if (pos >= divider*base) { divider *= base; magnitude = "G"; }
+    const int64_t tens = (n / (divider/10));
+    const long whole = (long)(tens/10);
+    const long frac1 = (long)(tens%10);
+    char unitdesc[8];
+    snprintf(unitdesc, 8, "%s%s%s", magnitude, (base==1024 ? "i" : ""), suffix);
+    snprintf(buf, len, "%ld.%ld %-3s", whole, (frac1 < 0 ? -frac1 : frac1), unitdesc);
+  }
+  _mi_fprintf(out, arg, (fmt==NULL ? "%12s" : fmt), buf);
+}
+
+
+static void mi_print_amount(int64_t n, int64_t unit, mi_output_fun* out, void* arg) {
+  mi_printf_amount(n,unit,out,arg,NULL);
+}
+
+static void mi_print_count(int64_t n, int64_t unit, mi_output_fun* out, void* arg) {
+  if (unit==1) _mi_fprintf(out, arg, "%12s"," ");
+          else mi_print_amount(n,0,out,arg);
+}
+
+static void mi_stat_print_ex(const mi_stat_count_t* stat, const char* msg, int64_t unit, mi_output_fun* out, void* arg, const char* notok ) {
+  _mi_fprintf(out, arg,"%10s:", msg);
+  if (unit > 0) {
+    mi_print_amount(stat->peak, unit, out, arg);
+    mi_print_amount(stat->allocated, unit, out, arg);
+    mi_print_amount(stat->freed, unit, out, arg);
+    mi_print_amount(stat->current, unit, out, arg);
+    mi_print_amount(unit, 1, out, arg);
+    mi_print_count(stat->allocated, unit, out, arg);
+    if (stat->allocated > stat->freed) {
+      _mi_fprintf(out, arg, "  ");
+      _mi_fprintf(out, arg, (notok == NULL ? "not all freed" : notok));
+      _mi_fprintf(out, arg, "\n");
+    }
+    else {
+      _mi_fprintf(out, arg, "  ok\n");
+    }
+  }
+  else if (unit<0) {
+    mi_print_amount(stat->peak, -1, out, arg);
+    mi_print_amount(stat->allocated, -1, out, arg);
+    mi_print_amount(stat->freed, -1, out, arg);
+    mi_print_amount(stat->current, -1, out, arg);
+    if (unit==-1) {
+      _mi_fprintf(out, arg, "%24s", "");
+    }
+    else {
+      mi_print_amount(-unit, 1, out, arg);
+      mi_print_count((stat->allocated / -unit), 0, out, arg);
+    }
+    if (stat->allocated > stat->freed)
+      _mi_fprintf(out, arg, "  not all freed!\n");
+    else
+      _mi_fprintf(out, arg, "  ok\n");
+  }
+  else {
+    mi_print_amount(stat->peak, 1, out, arg);
+    mi_print_amount(stat->allocated, 1, out, arg);
+    _mi_fprintf(out, arg, "%11s", " ");  // no freed
+    mi_print_amount(stat->current, 1, out, arg);
+    _mi_fprintf(out, arg, "\n");
+  }
+}
+
+static void mi_stat_print(const mi_stat_count_t* stat, const char* msg, int64_t unit, mi_output_fun* out, void* arg) {
+  mi_stat_print_ex(stat, msg, unit, out, arg, NULL);
+}
+
+static void mi_stat_peak_print(const mi_stat_count_t* stat, const char* msg, int64_t unit, mi_output_fun* out, void* arg) {
+  _mi_fprintf(out, arg, "%10s:", msg);
+  mi_print_amount(stat->peak, unit, out, arg);
+  _mi_fprintf(out, arg, "\n");
+}
+
+static void mi_stat_counter_print(const mi_stat_counter_t* stat, const char* msg, mi_output_fun* out, void* arg ) {
+  _mi_fprintf(out, arg, "%10s:", msg);
+  mi_print_amount(stat->total, -1, out, arg);
+  _mi_fprintf(out, arg, "\n");
+}
+
+
+static void mi_stat_counter_print_avg(const mi_stat_counter_t* stat, const char* msg, mi_output_fun* out, void* arg) {
+  const int64_t avg_tens = (stat->count == 0 ? 0 : (stat->total*10 / stat->count));
+  const long avg_whole = (long)(avg_tens/10);
+  const long avg_frac1 = (long)(avg_tens%10);
+  _mi_fprintf(out, arg, "%10s: %5ld.%ld avg\n", msg, avg_whole, avg_frac1);
+}
+
+
+static void mi_print_header(mi_output_fun* out, void* arg ) {
+  _mi_fprintf(out, arg, "%10s: %11s %11s %11s %11s %11s %11s\n", "heap stats", "peak   ", "total   ", "freed   ", "current   ", "unit   ", "count   ");
+}
+
+#if MI_STAT>1
+static void mi_stats_print_bins(const mi_stat_count_t* bins, size_t max, const char* fmt, mi_output_fun* out, void* arg) {
+  bool found = false;
+  char buf[64];
+  for (size_t i = 0; i <= max; i++) {
+    if (bins[i].allocated > 0) {
+      found = true;
+      int64_t unit = _mi_bin_size((uint8_t)i);
+      snprintf(buf, 64, "%s %3lu", fmt, (long)i);
+      mi_stat_print(&bins[i], buf, unit, out, arg);
+    }
+  }
+  if (found) {
+    _mi_fprintf(out, arg, "\n");
+    mi_print_header(out, arg);
+  }
+}
+#endif
+
+
+
+//------------------------------------------------------------
+// Use an output wrapper for line-buffered output
+// (which is nice when using loggers etc.)
+//------------------------------------------------------------
+typedef struct buffered_s {
+  mi_output_fun* out;   // original output function
+  void*          arg;   // and state
+  char*          buf;   // local buffer of at least size `count+1`
+  size_t         used;  // currently used chars `used <= count`
+  size_t         count; // total chars available for output
+} buffered_t;
+
+static void mi_buffered_flush(buffered_t* buf) {
+  buf->buf[buf->used] = 0;
+  _mi_fputs(buf->out, buf->arg, NULL, buf->buf);
+  buf->used = 0;
+}
+
+static void mi_cdecl mi_buffered_out(const char* msg, void* arg) {
+  buffered_t* buf = (buffered_t*)arg;
+  if (msg==NULL || buf==NULL) return;
+  for (const char* src = msg; *src != 0; src++) {
+    char c = *src;
+    if (buf->used >= buf->count) mi_buffered_flush(buf);
+    mi_assert_internal(buf->used < buf->count);
+    buf->buf[buf->used++] = c;
+    if (c == '\n') mi_buffered_flush(buf);
+  }
+}
+
+//------------------------------------------------------------
+// Print statistics
+//------------------------------------------------------------
+
+static void _mi_stats_print(mi_stats_t* stats, mi_output_fun* out0, void* arg0) mi_attr_noexcept {
+  // wrap the output function to be line buffered
+  char buf[256];
+  buffered_t buffer = { out0, arg0, NULL, 0, 255 };
+  buffer.buf = buf;
+  mi_output_fun* out = &mi_buffered_out;
+  void* arg = &buffer;
+
+  // and print using that
+  mi_print_header(out,arg);
+  #if MI_STAT>1
+  mi_stats_print_bins(stats->normal_bins, MI_BIN_HUGE, "normal",out,arg);
+  #endif
+  #if MI_STAT
+  mi_stat_print(&stats->normal, "normal", (stats->normal_count.count == 0 ? 1 : -(stats->normal.allocated / stats->normal_count.count)), out, arg);
+  mi_stat_print(&stats->large, "large", (stats->large_count.count == 0 ? 1 : -(stats->large.allocated / stats->large_count.count)), out, arg);
+  mi_stat_print(&stats->huge, "huge", (stats->huge_count.count == 0 ? 1 : -(stats->huge.allocated / stats->huge_count.count)), out, arg);
+  mi_stat_count_t total = { 0,0,0,0 };
+  mi_stat_add(&total, &stats->normal, 1);
+  mi_stat_add(&total, &stats->large, 1);
+  mi_stat_add(&total, &stats->huge, 1);
+  mi_stat_print(&total, "total", 1, out, arg);
+  #endif
+  #if MI_STAT>1
+  mi_stat_print(&stats->malloc, "malloc req", 1, out, arg);
+  _mi_fprintf(out, arg, "\n");
+  #endif
+  mi_stat_print_ex(&stats->reserved, "reserved", 1, out, arg, "");
+  mi_stat_print_ex(&stats->committed, "committed", 1, out, arg, "");
+  mi_stat_peak_print(&stats->reset, "reset", 1, out, arg );
+  mi_stat_peak_print(&stats->purged, "purged", 1, out, arg );
+  mi_stat_print(&stats->page_committed, "touched", 1, out, arg);
+  mi_stat_print(&stats->segments, "segments", -1, out, arg);
+  mi_stat_print(&stats->segments_abandoned, "-abandoned", -1, out, arg);
+  mi_stat_print(&stats->segments_cache, "-cached", -1, out, arg);
+  mi_stat_print(&stats->pages, "pages", -1, out, arg);
+  mi_stat_print(&stats->pages_abandoned, "-abandoned", -1, out, arg);
+  mi_stat_counter_print(&stats->pages_extended, "-extended", out, arg);
+  mi_stat_counter_print(&stats->page_no_retire, "-noretire", out, arg);
+  mi_stat_counter_print(&stats->mmap_calls, "mmaps", out, arg);
+  mi_stat_counter_print(&stats->commit_calls, "commits", out, arg);
+  mi_stat_counter_print(&stats->reset_calls, "resets", out, arg);
+  mi_stat_counter_print(&stats->purge_calls, "purges", out, arg);
+  mi_stat_print(&stats->threads, "threads", -1, out, arg);
+  mi_stat_counter_print_avg(&stats->searches, "searches", out, arg);
+  _mi_fprintf(out, arg, "%10s: %5zu\n", "numa nodes", _mi_os_numa_node_count());
+
+  size_t elapsed;
+  size_t user_time;
+  size_t sys_time;
+  size_t current_rss;
+  size_t peak_rss;
+  size_t current_commit;
+  size_t peak_commit;
+  size_t page_faults;
+  mi_process_info(&elapsed, &user_time, &sys_time, &current_rss, &peak_rss, &current_commit, &peak_commit, &page_faults);
+  _mi_fprintf(out, arg, "%10s: %5ld.%03ld s\n", "elapsed", elapsed/1000, elapsed%1000);
+  _mi_fprintf(out, arg, "%10s: user: %ld.%03ld s, system: %ld.%03ld s, faults: %lu, rss: ", "process",
+              user_time/1000, user_time%1000, sys_time/1000, sys_time%1000, (unsigned long)page_faults );
+  mi_printf_amount((int64_t)peak_rss, 1, out, arg, "%s");
+  if (peak_commit > 0) {
+    _mi_fprintf(out, arg, ", commit: ");
+    mi_printf_amount((int64_t)peak_commit, 1, out, arg, "%s");
+  }
+  _mi_fprintf(out, arg, "\n");
+}
+
+static mi_msecs_t mi_process_start; // = 0
+
+static mi_stats_t* mi_stats_get_default(void) {
+  mi_heap_t* heap = mi_heap_get_default();
+  return &heap->tld->stats;
+}
+
+static void mi_stats_merge_from(mi_stats_t* stats) {
+  if (stats != &_mi_stats_main) {
+    mi_stats_add(&_mi_stats_main, stats);
+    memset(stats, 0, sizeof(mi_stats_t));
+  }
+}
+
+void mi_stats_reset(void) mi_attr_noexcept {
+  mi_stats_t* stats = mi_stats_get_default();
+  if (stats != &_mi_stats_main) { memset(stats, 0, sizeof(mi_stats_t)); }
+  memset(&_mi_stats_main, 0, sizeof(mi_stats_t));
+  if (mi_process_start == 0) { mi_process_start = _mi_clock_start(); };
+}
+
+void mi_stats_merge(void) mi_attr_noexcept {
+  mi_stats_merge_from( mi_stats_get_default() );
+}
+
+void _mi_stats_done(mi_stats_t* stats) {  // called from `mi_thread_done`
+  mi_stats_merge_from(stats);
+}
+
+void mi_stats_print_out(mi_output_fun* out, void* arg) mi_attr_noexcept {
+  mi_stats_merge_from(mi_stats_get_default());
+  _mi_stats_print(&_mi_stats_main, out, arg);
+}
+
+void mi_stats_print(void* out) mi_attr_noexcept {
+  // for compatibility there is an `out` parameter (which can be `stdout` or `stderr`)
+  mi_stats_print_out((mi_output_fun*)out, NULL);
+}
+
+void mi_thread_stats_print_out(mi_output_fun* out, void* arg) mi_attr_noexcept {
+  _mi_stats_print(mi_stats_get_default(), out, arg);
+}
+
+
+// ----------------------------------------------------------------
+// Basic timer for convenience; use milli-seconds to avoid doubles
+// ----------------------------------------------------------------
+
+static mi_msecs_t mi_clock_diff;
+
+mi_msecs_t _mi_clock_now(void) {
+  return _mi_prim_clock_now();
+}
+
+mi_msecs_t _mi_clock_start(void) {
+  if (mi_clock_diff == 0.0) {
+    mi_msecs_t t0 = _mi_clock_now();
+    mi_clock_diff = _mi_clock_now() - t0;
+  }
+  return _mi_clock_now();
+}
+
+mi_msecs_t _mi_clock_end(mi_msecs_t start) {
+  mi_msecs_t end = _mi_clock_now();
+  return (end - start - mi_clock_diff);
+}
+
+
+// --------------------------------------------------------
+// Basic process statistics
+// --------------------------------------------------------
+
+mi_decl_export void mi_process_info(size_t* elapsed_msecs, size_t* user_msecs, size_t* system_msecs, size_t* current_rss, size_t* peak_rss, size_t* current_commit, size_t* peak_commit, size_t* page_faults) mi_attr_noexcept
+{
+  mi_process_info_t pinfo;
+  _mi_memzero_var(pinfo);
+  pinfo.elapsed        = _mi_clock_end(mi_process_start);
+  pinfo.current_commit = (size_t)(mi_atomic_loadi64_relaxed((_Atomic(int64_t)*)&_mi_stats_main.committed.current));
+  pinfo.peak_commit    = (size_t)(mi_atomic_loadi64_relaxed((_Atomic(int64_t)*)&_mi_stats_main.committed.peak));
+  pinfo.current_rss    = pinfo.current_commit;
+  pinfo.peak_rss       = pinfo.peak_commit;
+  pinfo.utime          = 0;
+  pinfo.stime          = 0;
+  pinfo.page_faults    = 0;
+
+  _mi_prim_process_info(&pinfo);
+
+  if (elapsed_msecs!=NULL)  *elapsed_msecs  = (pinfo.elapsed < 0 ? 0 : (pinfo.elapsed < (mi_msecs_t)PTRDIFF_MAX ? (size_t)pinfo.elapsed : PTRDIFF_MAX));
+  if (user_msecs!=NULL)     *user_msecs     = (pinfo.utime < 0 ? 0 : (pinfo.utime < (mi_msecs_t)PTRDIFF_MAX ? (size_t)pinfo.utime : PTRDIFF_MAX));
+  if (system_msecs!=NULL)   *system_msecs   = (pinfo.stime < 0 ? 0 : (pinfo.stime < (mi_msecs_t)PTRDIFF_MAX ? (size_t)pinfo.stime : PTRDIFF_MAX));
+  if (current_rss!=NULL)    *current_rss    = pinfo.current_rss;
+  if (peak_rss!=NULL)       *peak_rss       = pinfo.peak_rss;
+  if (current_commit!=NULL) *current_commit = pinfo.current_commit;
+  if (peak_commit!=NULL)    *peak_commit    = pinfo.peak_commit;
+  if (page_faults!=NULL)    *page_faults    = pinfo.page_faults;
+}
diff --git a/Objects/moduleobject.c b/Objects/moduleobject.c
index 985be58d02c784..e2741fef6debd3 100644
--- a/Objects/moduleobject.c
+++ b/Objects/moduleobject.c
@@ -4,14 +4,16 @@
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_interp.h"        // PyInterpreterState.importlib
+#include "pycore_modsupport.h"    // _PyModule_CreateInitialized()
+#include "pycore_moduleobject.h"  // _PyModule_GetDef()
 #include "pycore_object.h"        // _PyType_AllocNoTrack
+#include "pycore_pyerrors.h"      // _PyErr_FormatFromCause()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
-#include "pycore_moduleobject.h"  // _PyModule_GetDef()
-#include "structmember.h"         // PyMemberDef
+
 
 
 static PyMemberDef module_members[] = {
-    {"__dict__", T_OBJECT, offsetof(PyModuleObject, md_dict), READONLY},
+    {"__dict__", _Py_T_OBJECT, offsetof(PyModuleObject, md_dict), Py_READONLY},
     {0}
 };
 
@@ -504,29 +506,36 @@ PyModule_GetDict(PyObject *m)
         PyErr_BadInternalCall();
         return NULL;
     }
-    return _PyModule_GetDict(m);
+    return _PyModule_GetDict(m);  // borrowed reference
 }
 
 PyObject*
-PyModule_GetNameObject(PyObject *m)
+PyModule_GetNameObject(PyObject *mod)
 {
-    PyObject *d;
-    PyObject *name;
-    if (!PyModule_Check(m)) {
+    if (!PyModule_Check(mod)) {
         PyErr_BadArgument();
         return NULL;
     }
-    d = ((PyModuleObject *)m)->md_dict;
-    if (d == NULL || !PyDict_Check(d) ||
-        (name = PyDict_GetItemWithError(d, &_Py_ID(__name__))) == NULL ||
-        !PyUnicode_Check(name))
-    {
-        if (!PyErr_Occurred()) {
-            PyErr_SetString(PyExc_SystemError, "nameless module");
-        }
-        return NULL;
+    PyObject *dict = ((PyModuleObject *)mod)->md_dict;  // borrowed reference
+    if (dict == NULL || !PyDict_Check(dict)) {
+        goto error;
     }
-    return Py_NewRef(name);
+    PyObject *name;
+    if (PyDict_GetItemRef(dict, &_Py_ID(__name__), &name) <= 0) {
+        // error or not found
+        goto error;
+    }
+    if (!PyUnicode_Check(name)) {
+        Py_DECREF(name);
+        goto error;
+    }
+    return name;
+
+error:
+    if (!PyErr_Occurred()) {
+        PyErr_SetString(PyExc_SystemError, "nameless module");
+    }
+    return NULL;
 }
 
 const char *
@@ -542,25 +551,32 @@ PyModule_GetName(PyObject *m)
 }
 
 PyObject*
-PyModule_GetFilenameObject(PyObject *m)
+PyModule_GetFilenameObject(PyObject *mod)
 {
-    PyObject *d;
-    PyObject *fileobj;
-    if (!PyModule_Check(m)) {
+    if (!PyModule_Check(mod)) {
         PyErr_BadArgument();
         return NULL;
     }
-    d = ((PyModuleObject *)m)->md_dict;
-    if (d == NULL ||
-        (fileobj = PyDict_GetItemWithError(d, &_Py_ID(__file__))) == NULL ||
-        !PyUnicode_Check(fileobj))
-    {
-        if (!PyErr_Occurred()) {
-            PyErr_SetString(PyExc_SystemError, "module filename missing");
-        }
-        return NULL;
+    PyObject *dict = ((PyModuleObject *)mod)->md_dict;  // borrowed reference
+    if (dict == NULL) {
+        goto error;
+    }
+    PyObject *fileobj;
+    if (PyDict_GetItemRef(dict, &_Py_ID(__file__), &fileobj) <= 0) {
+        // error or not found
+        goto error;
     }
-    return Py_NewRef(fileobj);
+    if (!PyUnicode_Check(fileobj)) {
+        Py_DECREF(fileobj);
+        goto error;
+    }
+    return fileobj;
+
+error:
+    if (!PyErr_Occurred()) {
+        PyErr_SetString(PyExc_SystemError, "module filename missing");
+    }
+    return NULL;
 }
 
 const char *
@@ -633,7 +649,7 @@ _PyModule_ClearDict(PyObject *d)
                         PyErr_Clear();
                 }
                 if (PyDict_SetItem(d, key, Py_None) != 0) {
-                    PyErr_WriteUnraisable(NULL);
+                    PyErr_FormatUnraisable("Exception ignored on clearing module dict");
                 }
             }
         }
@@ -654,7 +670,7 @@ _PyModule_ClearDict(PyObject *d)
                         PyErr_Clear();
                 }
                 if (PyDict_SetItem(d, key, Py_None) != 0) {
-                    PyErr_WriteUnraisable(NULL);
+                    PyErr_FormatUnraisable("Exception ignored on clearing module dict");
                 }
             }
         }
@@ -733,27 +749,20 @@ module_repr(PyModuleObject *m)
 }
 
 /* Check if the "_initializing" attribute of the module spec is set to true.
-   Clear the exception and return 0 if spec is NULL.
  */
 int
 _PyModuleSpec_IsInitializing(PyObject *spec)
 {
-    if (spec != NULL) {
-        PyObject *value;
-        int ok = _PyObject_LookupAttr(spec, &_Py_ID(_initializing), &value);
-        if (ok == 0) {
-            return 0;
-        }
-        if (value != NULL) {
-            int initializing = PyObject_IsTrue(value);
-            Py_DECREF(value);
-            if (initializing >= 0) {
-                return initializing;
-            }
-        }
+    if (spec == NULL) {
+        return 0;
     }
-    PyErr_Clear();
-    return 0;
+    PyObject *value;
+    int rc = PyObject_GetOptionalAttr(spec, &_Py_ID(_initializing), &value);
+    if (rc > 0) {
+        rc = PyObject_IsTrue(value);
+        Py_DECREF(value);
+    }
+    return rc;
 }
 
 /* Check if the submodule name is in the "_uninitialized_submodules" attribute
@@ -766,17 +775,13 @@ _PyModuleSpec_IsUninitializedSubmodule(PyObject *spec, PyObject *name)
          return 0;
     }
 
-    PyObject *value = PyObject_GetAttr(spec, &_Py_ID(_uninitialized_submodules));
-    if (value == NULL) {
-        return 0;
+    PyObject *value;
+    int rc = PyObject_GetOptionalAttr(spec, &_Py_ID(_uninitialized_submodules), &value);
+    if (rc > 0) {
+        rc = PySequence_Contains(value, name);
+        Py_DECREF(value);
     }
-
-    int is_uninitialized = PySequence_Contains(value, name);
-    Py_DECREF(value);
-    if (is_uninitialized == -1) {
-        return 0;
-    }
-    return is_uninitialized;
+    return rc;
 }
 
 PyObject*
@@ -802,54 +807,56 @@ _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress)
         PyErr_Clear();
     }
     assert(m->md_dict != NULL);
-    getattr = PyDict_GetItemWithError(m->md_dict, &_Py_ID(__getattr__));
+    if (PyDict_GetItemRef(m->md_dict, &_Py_ID(__getattr__), &getattr) < 0) {
+        return NULL;
+    }
     if (getattr) {
         PyObject *result = PyObject_CallOneArg(getattr, name);
         if (result == NULL && suppress == 1 && PyErr_ExceptionMatches(PyExc_AttributeError)) {
             // suppress AttributeError
             PyErr_Clear();
         }
+        Py_DECREF(getattr);
         return result;
     }
-    if (PyErr_Occurred()) {
+    if (PyDict_GetItemRef(m->md_dict, &_Py_ID(__name__), &mod_name) < 0) {
         return NULL;
     }
-    mod_name = PyDict_GetItemWithError(m->md_dict, &_Py_ID(__name__));
     if (mod_name && PyUnicode_Check(mod_name)) {
-        Py_INCREF(mod_name);
-        PyObject *spec = PyDict_GetItemWithError(m->md_dict, &_Py_ID(__spec__));
-        if (spec == NULL && PyErr_Occurred()) {
+        PyObject *spec;
+        if (PyDict_GetItemRef(m->md_dict, &_Py_ID(__spec__), &spec) < 0) {
             Py_DECREF(mod_name);
             return NULL;
         }
         if (suppress != 1) {
-            Py_XINCREF(spec);
-            if (_PyModuleSpec_IsInitializing(spec)) {
+            int rc = _PyModuleSpec_IsInitializing(spec);
+            if (rc > 0) {
                 PyErr_Format(PyExc_AttributeError,
                                 "partially initialized "
                                 "module '%U' has no attribute '%U' "
                                 "(most likely due to a circular import)",
                                 mod_name, name);
             }
-            else if (_PyModuleSpec_IsUninitializedSubmodule(spec, name)) {
-                PyErr_Format(PyExc_AttributeError,
+            else if (rc == 0) {
+                rc = _PyModuleSpec_IsUninitializedSubmodule(spec, name);
+                if (rc > 0) {
+                    PyErr_Format(PyExc_AttributeError,
                                 "cannot access submodule '%U' of module '%U' "
                                 "(most likely due to a circular import)",
                                 name, mod_name);
-            }
-            else {
-                PyErr_Format(PyExc_AttributeError,
+                }
+                else if (rc == 0) {
+                    PyErr_Format(PyExc_AttributeError,
                                 "module '%U' has no attribute '%U'",
                                 mod_name, name);
+                }
             }
-            Py_XDECREF(spec);
         }
+        Py_XDECREF(spec);
         Py_DECREF(mod_name);
         return NULL;
     }
-    else if (PyErr_Occurred()) {
-        return NULL;
-    }
+    Py_XDECREF(mod_name);
     if (suppress != 1) {
         PyErr_Format(PyExc_AttributeError,
                     "module has no attribute '%U'", name);
@@ -888,10 +895,9 @@ module_clear(PyModuleObject *m)
     {
         int res = m->md_def->m_clear((PyObject*)m);
         if (PyErr_Occurred()) {
-            PySys_FormatStderr("Exception ignored in m_clear of module%s%V\n",
-                               m->md_name ? " " : "",
-                               m->md_name, "");
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored in m_clear of module%s%V",
+                                   m->md_name ? " " : "",
+                                   m->md_name, "");
         }
         if (res)
             return res;
@@ -935,26 +941,17 @@ static PyObject *
 module_get_annotations(PyModuleObject *m, void *Py_UNUSED(ignored))
 {
     PyObject *dict = PyObject_GetAttr((PyObject *)m, &_Py_ID(__dict__));
-
-    if ((dict == NULL) || !PyDict_Check(dict)) {
+    if (dict == NULL) {
+        return NULL;
+    }
+    if (!PyDict_Check(dict)) {
         PyErr_Format(PyExc_TypeError, "<module>.__dict__ is not a dictionary");
-        Py_XDECREF(dict);
+        Py_DECREF(dict);
         return NULL;
     }
 
     PyObject *annotations;
-    /* there's no _PyDict_GetItemId without WithError, so let's LBYL. */
-    if (PyDict_Contains(dict, &_Py_ID(__annotations__))) {
-        annotations = PyDict_GetItemWithError(dict, &_Py_ID(__annotations__));
-        /*
-        ** _PyDict_GetItemIdWithError could still fail,
-        ** for instance with a well-timed Ctrl-C or a MemoryError.
-        ** so let's be totally safe.
-        */
-        if (annotations) {
-            Py_INCREF(annotations);
-        }
-    } else {
+    if (PyDict_GetItemRef(dict, &_Py_ID(__annotations__), &annotations) == 0) {
         annotations = PyDict_New();
         if (annotations) {
             int result = PyDict_SetItem(
@@ -973,8 +970,10 @@ module_set_annotations(PyModuleObject *m, PyObject *value, void *Py_UNUSED(ignor
 {
     int ret = -1;
     PyObject *dict = PyObject_GetAttr((PyObject *)m, &_Py_ID(__dict__));
-
-    if ((dict == NULL) || !PyDict_Check(dict)) {
+    if (dict == NULL) {
+        return -1;
+    }
+    if (!PyDict_Check(dict)) {
         PyErr_Format(PyExc_TypeError, "<module>.__dict__ is not a dictionary");
         goto exit;
     }
@@ -982,19 +981,17 @@ module_set_annotations(PyModuleObject *m, PyObject *value, void *Py_UNUSED(ignor
     if (value != NULL) {
         /* set */
         ret = PyDict_SetItem(dict, &_Py_ID(__annotations__), value);
-        goto exit;
     }
-
-    /* delete */
-    if (!PyDict_Contains(dict, &_Py_ID(__annotations__))) {
-        PyErr_Format(PyExc_AttributeError, "__annotations__");
-        goto exit;
+    else {
+        /* delete */
+        ret = PyDict_DelItem(dict, &_Py_ID(__annotations__));
+        if (ret < 0 && PyErr_ExceptionMatches(PyExc_KeyError)) {
+            PyErr_SetString(PyExc_AttributeError, "__annotations__");
+        }
     }
 
-    ret = PyDict_DelItem(dict, &_Py_ID(__annotations__));
-
 exit:
-    Py_XDECREF(dict);
+    Py_DECREF(dict);
     return ret;
 }
 
diff --git a/Objects/namespaceobject.c b/Objects/namespaceobject.c
index 2cc4ddd3c91daa..b975bcfeea2cdf 100644
--- a/Objects/namespaceobject.c
+++ b/Objects/namespaceobject.c
@@ -1,8 +1,10 @@
 // namespace object implementation
 
 #include "Python.h"
+#include "pycore_modsupport.h"    // _PyArg_NoPositional()
 #include "pycore_namespace.h"     // _PyNamespace_Type
-#include "structmember.h"         // PyMemberDef
+
+#include <stddef.h>               // offsetof()
 
 
 typedef struct {
@@ -12,7 +14,7 @@ typedef struct {
 
 
 static PyMemberDef namespace_members[] = {
-    {"__dict__", T_OBJECT, offsetof(_PyNamespaceObject, ns_dict), READONLY},
+    {"__dict__", _Py_T_OBJECT, offsetof(_PyNamespaceObject, ns_dict), Py_READONLY},
     {NULL}
 };
 
@@ -187,9 +189,37 @@ namespace_reduce(_PyNamespaceObject *ns, PyObject *Py_UNUSED(ignored))
 }
 
 
+static PyObject *
+namespace_replace(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    if (!_PyArg_NoPositional("__replace__", args)) {
+        return NULL;
+    }
+
+    PyObject *result = PyObject_CallNoArgs((PyObject *)Py_TYPE(self));
+    if (!result) {
+        return NULL;
+    }
+    if (PyDict_Update(((_PyNamespaceObject*)result)->ns_dict,
+                      ((_PyNamespaceObject*)self)->ns_dict) < 0)
+    {
+        Py_DECREF(result);
+        return NULL;
+    }
+    if (kwargs) {
+        if (PyDict_Update(((_PyNamespaceObject*)result)->ns_dict, kwargs) < 0) {
+            Py_DECREF(result);
+            return NULL;
+        }
+    }
+    return result;
+}
+
+
 static PyMethodDef namespace_methods[] = {
     {"__reduce__", (PyCFunction)namespace_reduce, METH_NOARGS,
      namespace_reduce__doc__},
+    {"__replace__", _PyCFunction_CAST(namespace_replace), METH_VARARGS|METH_KEYWORDS, NULL},
     {NULL,         NULL}  // sentinel
 };
 
diff --git a/Objects/object.c b/Objects/object.c
index a7c79c673d5fd3..cdb7a08a7828fb 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -5,28 +5,30 @@
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCallTstate()
 #include "pycore_context.h"       // _PyContextTokenMissing_Type
+#include "pycore_descrobject.h"   // _PyMethodWrapper_Type
 #include "pycore_dict.h"          // _PyObject_MakeDictFromInstanceAttributes()
 #include "pycore_floatobject.h"   // _PyFloat_DebugMallocStats()
 #include "pycore_initconfig.h"    // _PyStatus_EXCEPTION()
+#include "pycore_hashtable.h"     // _Py_hashtable_new()
+#include "pycore_memoryobject.h"  // _PyManagedBuffer_Type
 #include "pycore_namespace.h"     // _PyNamespace_Type
-#include "pycore_object.h"        // _PyType_CheckConsistency(), _Py_FatalRefcountError()
+#include "pycore_object.h"        // PyAPI_DATA() _Py_SwappedOp definition
+#include "pycore_optimizer.h"     // _PyUOpExecutor_Type, _PyUOpOptimizer_Type, ...
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
 #include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_symtable.h"      // PySTEntry_Type
 #include "pycore_typeobject.h"    // _PyBufferWrapper_Type
+#include "pycore_typevarobject.h" // _PyTypeAlias_Type, _Py_initialize_generic
 #include "pycore_unionobject.h"   // _PyUnion_Type
-#include "pycore_interpreteridobject.h"  // _PyInterpreterID_Type
+
+#include "interpreteridobject.h"  // _PyInterpreterID_Type
 
 #ifdef Py_LIMITED_API
    // Prevent recursive call _Py_IncRef() <=> Py_INCREF()
 #  error "Py_LIMITED_API macro must not be defined"
 #endif
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* Defined in tracemalloc.c */
 extern void _PyMem_DumpTraceback(int fd, const void *ptr);
 
@@ -157,39 +159,52 @@ _PyDebug_PrintTotalRefs(void) {
    Do not call them otherwise, they do not initialize the object! */
 
 #ifdef Py_TRACE_REFS
-/* Head of circular doubly-linked list of all objects.  These are linked
- * together via the _ob_prev and _ob_next members of a PyObject, which
- * exist only in a Py_TRACE_REFS build.
- */
-static PyObject refchain = {&refchain, &refchain};
-
-/* Insert op at the front of the list of all objects.  If force is true,
- * op is added even if _ob_prev and _ob_next are non-NULL already.  If
- * force is false amd _ob_prev or _ob_next are non-NULL, do nothing.
- * force should be true if and only if op points to freshly allocated,
- * uninitialized memory, or you've unlinked op from the list and are
- * relinking it into the front.
- * Note that objects are normally added to the list via _Py_NewReference,
- * which is called by PyObject_Init.  Not all objects are initialized that
- * way, though; exceptions include statically allocated type objects, and
- * statically allocated singletons (like Py_True and Py_None).
- */
-void
-_Py_AddToAllObjects(PyObject *op, int force)
+
+#define REFCHAIN(interp) interp->object_state.refchain
+#define REFCHAIN_VALUE ((void*)(uintptr_t)1)
+
+bool
+_PyRefchain_IsTraced(PyInterpreterState *interp, PyObject *obj)
 {
-#ifdef  Py_DEBUG
-    if (!force) {
-        /* If it's initialized memory, op must be in or out of
-         * the list unambiguously.
-         */
-        _PyObject_ASSERT(op, (op->_ob_prev == NULL) == (op->_ob_next == NULL));
+    return (_Py_hashtable_get(REFCHAIN(interp), obj) == REFCHAIN_VALUE);
+}
+
+
+static void
+_PyRefchain_Trace(PyInterpreterState *interp, PyObject *obj)
+{
+    if (_Py_hashtable_set(REFCHAIN(interp), obj, REFCHAIN_VALUE) < 0) {
+        // Use a fatal error because _Py_NewReference() cannot report
+        // the error to the caller.
+        Py_FatalError("_Py_hashtable_set() memory allocation failed");
     }
+}
+
+
+static void
+_PyRefchain_Remove(PyInterpreterState *interp, PyObject *obj)
+{
+    void *value = _Py_hashtable_steal(REFCHAIN(interp), obj);
+#ifndef NDEBUG
+    assert(value == REFCHAIN_VALUE);
+#else
+    (void)value;
 #endif
-    if (force || op->_ob_prev == NULL) {
-        op->_ob_next = refchain._ob_next;
-        op->_ob_prev = &refchain;
-        refchain._ob_next->_ob_prev = op;
-        refchain._ob_next = op;
+}
+
+
+/* Add an object to the refchain hash table.
+ *
+ * Note that objects are normally added to the list by PyObject_Init()
+ * indirectly.  Not all objects are initialized that way, though; exceptions
+ * include statically allocated type objects, and statically allocated
+ * singletons (like Py_True and Py_None). */
+void
+_Py_AddToAllObjects(PyObject *op)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (!_PyRefchain_IsTraced(interp, op)) {
+        _PyRefchain_Trace(interp, op);
     }
 }
 #endif  /* Py_TRACE_REFS */
@@ -205,14 +220,14 @@ _Py_NegativeRefcount(const char *filename, int lineno, PyObject *op)
 
 /* This is used strictly by Py_INCREF(). */
 void
-_Py_IncRefTotal_DO_NOT_USE_THIS(void)
+_Py_INCREF_IncRefTotal(void)
 {
     reftotal_increment(_PyInterpreterState_GET());
 }
 
 /* This is used strictly by Py_DECREF(). */
 void
-_Py_DecRefTotal_DO_NOT_USE_THIS(void)
+_Py_DECREF_DecRefTotal(void)
 {
     reftotal_decrement(_PyInterpreterState_GET());
 }
@@ -281,6 +296,126 @@ _Py_DecRef(PyObject *o)
     Py_DECREF(o);
 }
 
+#ifdef Py_GIL_DISABLED
+# ifdef Py_REF_DEBUG
+static inline int
+is_shared_refcnt_dead(Py_ssize_t shared)
+{
+#  if SIZEOF_SIZE_T == 8
+    return shared == (Py_ssize_t)0xDDDDDDDDDDDDDDDD;
+#  else
+    return shared == (Py_ssize_t)0xDDDDDDDD;
+#  endif
+}
+# endif
+
+void
+_Py_DecRefSharedDebug(PyObject *o, const char *filename, int lineno)
+{
+    // Should we queue the object for the owning thread to merge?
+    int should_queue;
+
+    Py_ssize_t new_shared;
+    Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&o->ob_ref_shared);
+    do {
+        should_queue = (shared == 0 || shared == _Py_REF_MAYBE_WEAKREF);
+
+        if (should_queue) {
+            // If the object had refcount zero, not queued, and not merged,
+            // then we enqueue the object to be merged by the owning thread.
+            // In this case, we don't subtract one from the reference count
+            // because the queue holds a reference.
+            new_shared = _Py_REF_QUEUED;
+        }
+        else {
+            // Otherwise, subtract one from the reference count. This might
+            // be negative!
+            new_shared = shared - (1 << _Py_REF_SHARED_SHIFT);
+        }
+
+#ifdef Py_REF_DEBUG
+        if ((_Py_REF_IS_MERGED(new_shared) && new_shared < 0) ||
+            is_shared_refcnt_dead(shared))
+        {
+            _Py_NegativeRefcount(filename, lineno, o);
+        }
+#endif
+    } while (!_Py_atomic_compare_exchange_ssize(&o->ob_ref_shared,
+                                                &shared, new_shared));
+
+    if (should_queue) {
+        // TODO: the inter-thread queue is not yet implemented. For now,
+        // we just merge the refcount here.
+        Py_ssize_t refcount = _Py_ExplicitMergeRefcount(o, -1);
+        if (refcount == 0) {
+            _Py_Dealloc(o);
+        }
+    }
+    else if (new_shared == _Py_REF_MERGED) {
+        // refcount is zero AND merged
+        _Py_Dealloc(o);
+    }
+}
+
+void
+_Py_DecRefShared(PyObject *o)
+{
+    _Py_DecRefSharedDebug(o, NULL, 0);
+}
+
+void
+_Py_MergeZeroLocalRefcount(PyObject *op)
+{
+    assert(op->ob_ref_local == 0);
+
+    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
+    Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
+    if (shared == 0) {
+        // Fast-path: shared refcount is zero (including flags)
+        _Py_Dealloc(op);
+        return;
+    }
+
+    // Slow-path: atomically set the flags (low two bits) to _Py_REF_MERGED.
+    Py_ssize_t new_shared;
+    do {
+        new_shared = (shared & ~_Py_REF_SHARED_FLAG_MASK) | _Py_REF_MERGED;
+    } while (!_Py_atomic_compare_exchange_ssize(&op->ob_ref_shared,
+                                                &shared, new_shared));
+
+    if (new_shared == _Py_REF_MERGED) {
+        // i.e., the shared refcount is zero (only the flags are set) so we
+        // deallocate the object.
+        _Py_Dealloc(op);
+    }
+}
+
+Py_ssize_t
+_Py_ExplicitMergeRefcount(PyObject *op, Py_ssize_t extra)
+{
+    assert(!_Py_IsImmortal(op));
+    Py_ssize_t refcnt;
+    Py_ssize_t new_shared;
+    Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
+    do {
+        refcnt = Py_ARITHMETIC_RIGHT_SHIFT(Py_ssize_t, shared, _Py_REF_SHARED_SHIFT);
+        if (_Py_REF_IS_MERGED(shared)) {
+            return refcnt;
+        }
+
+        refcnt += (Py_ssize_t)op->ob_ref_local;
+        refcnt += extra;
+
+        new_shared = _Py_REF_SHARED(refcnt, _Py_REF_MERGED);
+    } while (!_Py_atomic_compare_exchange_ssize(&op->ob_ref_shared,
+                                                &shared, new_shared));
+
+    _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0);
+    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
+    return refcnt;
+}
+#endif  /* Py_GIL_DISABLED */
+
 
 /**************************************/
 
@@ -461,16 +596,6 @@ _PyObject_IsFreed(PyObject *op)
     if (_PyMem_IsPtrFreed(op) || _PyMem_IsPtrFreed(Py_TYPE(op))) {
         return 1;
     }
-    /* ignore op->ob_ref: its value can have be modified
-       by Py_INCREF() and Py_DECREF(). */
-#ifdef Py_TRACE_REFS
-    if (op->_ob_next != NULL && _PyMem_IsPtrFreed(op->_ob_next)) {
-        return 1;
-    }
-    if (op->_ob_prev != NULL && _PyMem_IsPtrFreed(op->_ob_prev)) {
-         return 1;
-     }
-#endif
     return 0;
 }
 
@@ -559,11 +684,6 @@ PyObject_Repr(PyObject *v)
         Py_DECREF(res);
         return NULL;
     }
-#ifndef Py_DEBUG
-    if (PyUnicode_READY(res) < 0) {
-        return NULL;
-    }
-#endif
     return res;
 }
 
@@ -582,10 +702,6 @@ PyObject_Str(PyObject *v)
     if (v == NULL)
         return PyUnicode_FromString("<NULL>");
     if (PyUnicode_CheckExact(v)) {
-#ifndef Py_DEBUG
-        if (PyUnicode_READY(v) < 0)
-            return NULL;
-#endif
         return Py_NewRef(v);
     }
     if (Py_TYPE(v)->tp_str == NULL)
@@ -617,11 +733,6 @@ PyObject_Str(PyObject *v)
         Py_DECREF(res);
         return NULL;
     }
-#ifndef Py_DEBUG
-    if (PyUnicode_READY(res) < 0) {
-        return NULL;
-    }
-#endif
     assert(_PyUnicode_CheckConsistency(res, 1));
     return res;
 }
@@ -705,7 +816,7 @@ _PyObject_FunctionStr(PyObject *x)
 {
     assert(!PyErr_Occurred());
     PyObject *qualname;
-    int ret = _PyObject_LookupAttr(x, &_Py_ID(__qualname__), &qualname);
+    int ret = PyObject_GetOptionalAttr(x, &_Py_ID(__qualname__), &qualname);
     if (qualname == NULL) {
         if (ret < 0) {
             return NULL;
@@ -714,7 +825,7 @@ _PyObject_FunctionStr(PyObject *x)
     }
     PyObject *module;
     PyObject *result = NULL;
-    ret = _PyObject_LookupAttr(x, &_Py_ID(__module__), &module);
+    ret = PyObject_GetOptionalAttr(x, &_Py_ID(__module__), &module);
     if (module != NULL && module != Py_None) {
         ret = PyObject_RichCompareBool(module, &_Py_ID(builtins), Py_NE);
         if (ret < 0) {
@@ -917,26 +1028,27 @@ PyObject_GetAttrString(PyObject *v, const char *name)
 }
 
 int
-PyObject_HasAttrString(PyObject *v, const char *name)
+PyObject_HasAttrStringWithError(PyObject *obj, const char *name)
 {
-    if (Py_TYPE(v)->tp_getattr != NULL) {
-        PyObject *res = (*Py_TYPE(v)->tp_getattr)(v, (char*)name);
-        if (res != NULL) {
-            Py_DECREF(res);
-            return 1;
-        }
-        PyErr_Clear();
-        return 0;
-    }
+    PyObject *res;
+    int rc = PyObject_GetOptionalAttrString(obj, name, &res);
+    Py_XDECREF(res);
+    return rc;
+}
 
-    PyObject *attr_name = PyUnicode_FromString(name);
-    if (attr_name == NULL) {
-        PyErr_Clear();
+
+int
+PyObject_HasAttrString(PyObject *obj, const char *name)
+{
+    int rc = PyObject_HasAttrStringWithError(obj, name);
+    if (rc < 0) {
+        PyErr_FormatUnraisable(
+            "Exception ignored in PyObject_HasAttrString(); consider using "
+            "PyObject_HasAttrStringWithError(), "
+            "PyObject_GetOptionalAttrString() or PyObject_GetAttrString()");
         return 0;
     }
-    int ok = PyObject_HasAttr(v, attr_name);
-    Py_DECREF(attr_name);
-    return ok;
+    return rc;
 }
 
 int
@@ -955,6 +1067,12 @@ PyObject_SetAttrString(PyObject *v, const char *name, PyObject *w)
     return res;
 }
 
+int
+PyObject_DelAttrString(PyObject *v, const char *name)
+{
+    return PyObject_SetAttrString(v, name, NULL);
+}
+
 int
 _PyObject_IsAbstract(PyObject *obj)
 {
@@ -964,7 +1082,7 @@ _PyObject_IsAbstract(PyObject *obj)
     if (obj == NULL)
         return 0;
 
-    res = _PyObject_LookupAttr(obj, &_Py_ID(__isabstractmethod__), &isabstract);
+    res = PyObject_GetOptionalAttr(obj, &_Py_ID(__isabstractmethod__), &isabstract);
     if (res > 0) {
         res = PyObject_IsTrue(isabstract);
         Py_DECREF(isabstract);
@@ -1056,7 +1174,7 @@ PyObject_GetAttr(PyObject *v, PyObject *name)
 }
 
 int
-_PyObject_LookupAttr(PyObject *v, PyObject *name, PyObject **result)
+PyObject_GetOptionalAttr(PyObject *v, PyObject *name, PyObject **result)
 {
     PyTypeObject *tp = Py_TYPE(v);
 
@@ -1124,29 +1242,51 @@ _PyObject_LookupAttr(PyObject *v, PyObject *name, PyObject **result)
 }
 
 int
-_PyObject_LookupAttrId(PyObject *v, _Py_Identifier *name, PyObject **result)
+PyObject_GetOptionalAttrString(PyObject *obj, const char *name, PyObject **result)
 {
-    PyObject *oname = _PyUnicode_FromId(name); /* borrowed */
-    if (!oname) {
-        *result = NULL;
+    if (Py_TYPE(obj)->tp_getattr == NULL) {
+        PyObject *oname = PyUnicode_FromString(name);
+        if (oname == NULL) {
+            *result = NULL;
+            return -1;
+        }
+        int rc = PyObject_GetOptionalAttr(obj, oname, result);
+        Py_DECREF(oname);
+        return rc;
+    }
+
+    *result = (*Py_TYPE(obj)->tp_getattr)(obj, (char*)name);
+    if (*result != NULL) {
+        return 1;
+    }
+    if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
         return -1;
     }
-    return  _PyObject_LookupAttr(v, oname, result);
+    PyErr_Clear();
+    return 0;
 }
 
 int
-PyObject_HasAttr(PyObject *v, PyObject *name)
+PyObject_HasAttrWithError(PyObject *obj, PyObject *name)
 {
     PyObject *res;
-    if (_PyObject_LookupAttr(v, name, &res) < 0) {
-        PyErr_Clear();
-        return 0;
-    }
-    if (res == NULL) {
+    int rc = PyObject_GetOptionalAttr(obj, name, &res);
+    Py_XDECREF(res);
+    return rc;
+}
+
+int
+PyObject_HasAttr(PyObject *obj, PyObject *name)
+{
+    int rc = PyObject_HasAttrWithError(obj, name);
+    if (rc < 0) {
+        PyErr_FormatUnraisable(
+            "Exception ignored in PyObject_HasAttr(); consider using "
+            "PyObject_HasAttrWithError(), "
+            "PyObject_GetOptionalAttr() or PyObject_GetAttr()");
         return 0;
     }
-    Py_DECREF(res);
-    return 1;
+    return rc;
 }
 
 int
@@ -1198,6 +1338,12 @@ PyObject_SetAttr(PyObject *v, PyObject *name, PyObject *value)
     return -1;
 }
 
+int
+PyObject_DelAttr(PyObject *v, PyObject *name)
+{
+    return PyObject_SetAttr(v, name, NULL);
+}
+
 PyObject **
 _PyObject_ComputedDictPointer(PyObject *obj)
 {
@@ -1344,19 +1490,14 @@ _PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method)
     }
     if (dict != NULL) {
         Py_INCREF(dict);
-        PyObject *attr = PyDict_GetItemWithError(dict, name);
-        if (attr != NULL) {
-            *method = Py_NewRef(attr);
+        if (PyDict_GetItemRef(dict, name, method) != 0) {
+            // found or error
             Py_DECREF(dict);
             Py_XDECREF(descr);
             return 0;
         }
+        // not found
         Py_DECREF(dict);
-
-        if (PyErr_Occurred()) {
-            Py_XDECREF(descr);
-            return 0;
-        }
     }
 
     if (meth_found) {
@@ -1461,21 +1602,17 @@ _PyObject_GenericGetAttrWithDict(PyObject *obj, PyObject *name,
     }
     if (dict != NULL) {
         Py_INCREF(dict);
-        res = PyDict_GetItemWithError(dict, name);
+        int rc = PyDict_GetItemRef(dict, name, &res);
+        Py_DECREF(dict);
         if (res != NULL) {
-            Py_INCREF(res);
-            Py_DECREF(dict);
             goto done;
         }
-        else {
-            Py_DECREF(dict);
-            if (PyErr_Occurred()) {
-                if (suppress && PyErr_ExceptionMatches(PyExc_AttributeError)) {
-                    PyErr_Clear();
-                }
-                else {
-                    goto done;
-                }
+        else if (rc < 0) {
+            if (suppress && PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                PyErr_Clear();
+            }
+            else {
+                goto done;
             }
         }
     }
@@ -1557,15 +1694,32 @@ _PyObject_GenericSetAttrWithDict(PyObject *obj, PyObject *name,
                 goto error_check;
             }
             dictptr = &dorv_ptr->dict;
+            if (*dictptr == NULL) {
+                if (_PyObject_InitInlineValues(obj, tp) < 0) {
+                    goto done;
+                }
+                res = _PyObject_StoreInstanceAttribute(
+                    obj, _PyDictOrValues_GetValues(*dorv_ptr), name, value);
+                goto error_check;
+            }
         }
         else {
             dictptr = _PyObject_ComputedDictPointer(obj);
         }
         if (dictptr == NULL) {
             if (descr == NULL) {
-                PyErr_Format(PyExc_AttributeError,
-                            "'%.100s' object has no attribute '%U'",
-                            tp->tp_name, name);
+                if (tp->tp_setattro == PyObject_GenericSetAttr) {
+                    PyErr_Format(PyExc_AttributeError,
+                                "'%.100s' object has no attribute '%U' and no "
+                                "__dict__ for setting new attributes",
+                                tp->tp_name, name);
+                }
+                else {
+                    PyErr_Format(PyExc_AttributeError,
+                                "'%.100s' object has no attribute '%U'",
+                                tp->tp_name, name);
+                }
+                set_attribute_error_context(obj, name);
             }
             else {
                 PyErr_Format(PyExc_AttributeError,
@@ -1598,6 +1752,7 @@ _PyObject_GenericSetAttrWithDict(PyObject *obj, PyObject *name,
                          "'%.100s' object has no attribute '%U'",
                          tp->tp_name, name);
         }
+        set_attribute_error_context(obj, name);
     }
   done:
     Py_XDECREF(descr);
@@ -1703,13 +1858,15 @@ _dir_locals(void)
     PyObject *names;
     PyObject *locals;
 
-    locals = PyEval_GetLocals();
+    locals = _PyEval_GetFrameLocals();
     if (locals == NULL)
         return NULL;
 
     names = PyMapping_Keys(locals);
-    if (!names)
+    Py_DECREF(locals);
+    if (!names) {
         return NULL;
+    }
     if (!PyList_Check(names)) {
         PyErr_Format(PyExc_TypeError,
             "dir(): expected keys() of locals to be a list, "
@@ -1721,7 +1878,6 @@ _dir_locals(void)
         Py_DECREF(names);
         return NULL;
     }
-    /* the locals don't need to be DECREF'd */
     return names;
 }
 
@@ -1870,7 +2026,7 @@ PyTypeObject _PyNone_Type = {
     0,                  /*tp_doc */
     0,                  /*tp_traverse */
     0,                  /*tp_clear */
-    0,                  /*tp_richcompare */
+    _Py_BaseObject_RichCompare, /*tp_richcompare */
     0,                  /*tp_weaklistoffset */
     0,                  /*tp_iter */
     0,                  /*tp_iternext */
@@ -1887,11 +2043,7 @@ PyTypeObject _PyNone_Type = {
     none_new,           /*tp_new */
 };
 
-PyObject _Py_NoneStruct = {
-    _PyObject_EXTRA_INIT
-    { _Py_IMMORTAL_REFCNT },
-    &_PyNone_Type
-};
+PyObject _Py_NoneStruct = _PyObject_HEAD_INIT(&_PyNone_Type);
 
 /* NotImplemented is an object that can be used to signal that an
    operation is not implemented for the given type combination. */
@@ -1990,17 +2142,45 @@ PyTypeObject _PyNotImplemented_Type = {
     notimplemented_new, /*tp_new */
 };
 
-PyObject _Py_NotImplementedStruct = {
-    _PyObject_EXTRA_INIT
-    { _Py_IMMORTAL_REFCNT },
-    &_PyNotImplemented_Type
-};
+PyObject _Py_NotImplementedStruct = _PyObject_HEAD_INIT(&_PyNotImplemented_Type);
 
-extern PyTypeObject _Py_GenericAliasIterType;
-extern PyTypeObject _PyMemoryIter_Type;
+
+PyStatus
+_PyObject_InitState(PyInterpreterState *interp)
+{
+#ifdef Py_TRACE_REFS
+    _Py_hashtable_allocator_t alloc = {
+        // Don't use default PyMem_Malloc() and PyMem_Free() which
+        // require the caller to hold the GIL.
+        .malloc = PyMem_RawMalloc,
+        .free = PyMem_RawFree,
+    };
+    REFCHAIN(interp) = _Py_hashtable_new_full(
+        _Py_hashtable_hash_ptr, _Py_hashtable_compare_direct,
+        NULL, NULL, &alloc);
+    if (REFCHAIN(interp) == NULL) {
+        return _PyStatus_NO_MEMORY();
+    }
+#endif
+    return _PyStatus_OK();
+}
+
+void
+_PyObject_FiniState(PyInterpreterState *interp)
+{
+#ifdef Py_TRACE_REFS
+    _Py_hashtable_destroy(REFCHAIN(interp));
+    REFCHAIN(interp) = NULL;
+#endif
+}
+
+
+extern PyTypeObject _PyAnextAwaitable_Type;
+extern PyTypeObject _PyLegacyEventHandler_Type;
 extern PyTypeObject _PyLineIterator;
+extern PyTypeObject _PyMemoryIter_Type;
 extern PyTypeObject _PyPositionsIterator;
-extern PyTypeObject _PyLegacyEventHandler_Type;
+extern PyTypeObject _Py_GenericAliasIterType;
 
 static PyTypeObject* static_types[] = {
     // The two most important base types: must be initialized first and
@@ -2047,6 +2227,7 @@ static PyTypeObject* static_types[] = {
     &PyGen_Type,
     &PyGetSetDescr_Type,
     &PyInstanceMethod_Type,
+    &PyInterpreterID_Type,
     &PyListIter_Type,
     &PyListRevIter_Type,
     &PyList_Type,
@@ -2088,6 +2269,9 @@ static PyTypeObject* static_types[] = {
     &_PyBufferWrapper_Type,
     &_PyContextTokenMissing_Type,
     &_PyCoroWrapper_Type,
+    &_PyCounterExecutor_Type,
+    &_PyCounterOptimizer_Type,
+    &_PyDefaultOptimizer_Type,
     &_Py_GenericAliasIterType,
     &_PyHamtItems_Type,
     &_PyHamtKeys_Type,
@@ -2097,7 +2281,6 @@ static PyTypeObject* static_types[] = {
     &_PyHamt_CollisionNode_Type,
     &_PyHamt_Type,
     &_PyLegacyEventHandler_Type,
-    &_PyInterpreterID_Type,
     &_PyLineIterator,
     &_PyManagedBuffer_Type,
     &_PyMemoryIter_Type,
@@ -2108,9 +2291,12 @@ static PyTypeObject* static_types[] = {
     &_PyPositionsIterator,
     &_PyUnicodeASCIIIter_Type,
     &_PyUnion_Type,
+    &_PyUOpExecutor_Type,
+    &_PyUOpOptimizer_Type,
     &_PyWeakref_CallableProxyType,
     &_PyWeakref_ProxyType,
     &_PyWeakref_RefType,
+    &_PyTypeAlias_Type,
 
     // subclasses: _PyTypes_FiniTypes() deallocates them before their base
     // class
@@ -2139,6 +2325,11 @@ _PyTypes_InitTypes(PyInterpreterState *interp)
         }
     }
 
+    // Must be after static types are initialized
+    if (_Py_initialize_generic(interp) < 0) {
+        return _PyStatus_ERR("Can't initialize generic types");
+    }
+
     return _PyStatus_OK();
 }
 
@@ -2168,9 +2359,18 @@ new_reference(PyObject *op)
         _PyTraceMalloc_NewReference(op);
     }
     // Skip the immortal object check in Py_SET_REFCNT; always set refcnt to 1
+#if !defined(Py_GIL_DISABLED)
     op->ob_refcnt = 1;
+#else
+    op->ob_tid = _Py_ThreadId();
+    op->_padding = 0;
+    op->ob_mutex = (struct _PyMutex){ 0 };
+    op->ob_gc_bits = 0;
+    op->ob_ref_local = 1;
+    op->ob_ref_shared = 0;
+#endif
 #ifdef Py_TRACE_REFS
-    _Py_AddToAllObjects(op, 1);
+    _Py_AddToAllObjects(op);
 #endif
 }
 
@@ -2198,91 +2398,164 @@ _Py_ForgetReference(PyObject *op)
         _PyObject_ASSERT_FAILED_MSG(op, "negative refcnt");
     }
 
-    if (op == &refchain ||
-        op->_ob_prev->_ob_next != op || op->_ob_next->_ob_prev != op)
-    {
-        _PyObject_ASSERT_FAILED_MSG(op, "invalid object chain");
-    }
+    PyInterpreterState *interp = _PyInterpreterState_GET();
 
 #ifdef SLOW_UNREF_CHECK
-    PyObject *p;
-    for (p = refchain._ob_next; p != &refchain; p = p->_ob_next) {
-        if (p == op) {
-            break;
-        }
-    }
-    if (p == &refchain) {
+    if (!_PyRefchain_Get(interp, op)) {
         /* Not found */
         _PyObject_ASSERT_FAILED_MSG(op,
                                     "object not found in the objects list");
     }
 #endif
 
-    op->_ob_next->_ob_prev = op->_ob_prev;
-    op->_ob_prev->_ob_next = op->_ob_next;
-    op->_ob_next = op->_ob_prev = NULL;
+    _PyRefchain_Remove(interp, op);
 }
 
+static int
+_Py_PrintReference(_Py_hashtable_t *ht,
+                   const void *key, const void *value,
+                   void *user_data)
+{
+    PyObject *op = (PyObject*)key;
+    FILE *fp = (FILE *)user_data;
+    fprintf(fp, "%p [%zd] ", (void *)op, Py_REFCNT(op));
+    if (PyObject_Print(op, fp, 0) != 0) {
+        PyErr_Clear();
+    }
+    putc('\n', fp);
+    return 0;
+}
+
+
 /* Print all live objects.  Because PyObject_Print is called, the
  * interpreter must be in a healthy state.
  */
 void
-_Py_PrintReferences(FILE *fp)
+_Py_PrintReferences(PyInterpreterState *interp, FILE *fp)
 {
-    PyObject *op;
-    fprintf(fp, "Remaining objects:\n");
-    for (op = refchain._ob_next; op != &refchain; op = op->_ob_next) {
-        fprintf(fp, "%p [%zd] ", (void *)op, Py_REFCNT(op));
-        if (PyObject_Print(op, fp, 0) != 0) {
-            PyErr_Clear();
-        }
-        putc('\n', fp);
+    if (interp == NULL) {
+        interp = _PyInterpreterState_Main();
     }
+    fprintf(fp, "Remaining objects:\n");
+    _Py_hashtable_foreach(REFCHAIN(interp), _Py_PrintReference, fp);
 }
 
+
+static int
+_Py_PrintReferenceAddress(_Py_hashtable_t *ht,
+                          const void *key, const void *value,
+                          void *user_data)
+{
+    PyObject *op = (PyObject*)key;
+    FILE *fp = (FILE *)user_data;
+    fprintf(fp, "%p [%zd] %s\n",
+            (void *)op, Py_REFCNT(op), Py_TYPE(op)->tp_name);
+    return 0;
+}
+
+
 /* Print the addresses of all live objects.  Unlike _Py_PrintReferences, this
  * doesn't make any calls to the Python C API, so is always safe to call.
  */
+// XXX This function is not safe to use if the interpreter has been
+// freed or is in an unhealthy state (e.g. late in finalization).
+// The call in Py_FinalizeEx() is okay since the main interpreter
+// is statically allocated.
 void
-_Py_PrintReferenceAddresses(FILE *fp)
+_Py_PrintReferenceAddresses(PyInterpreterState *interp, FILE *fp)
 {
-    PyObject *op;
     fprintf(fp, "Remaining object addresses:\n");
-    for (op = refchain._ob_next; op != &refchain; op = op->_ob_next)
-        fprintf(fp, "%p [%zd] %s\n", (void *)op,
-            Py_REFCNT(op), Py_TYPE(op)->tp_name);
+    _Py_hashtable_foreach(REFCHAIN(interp), _Py_PrintReferenceAddress, fp);
+}
+
+
+typedef struct {
+    PyObject *self;
+    PyObject *args;
+    PyObject *list;
+    PyObject *type;
+    Py_ssize_t limit;
+} _Py_GetObjectsData;
+
+enum {
+    _PY_GETOBJECTS_IGNORE = 0,
+    _PY_GETOBJECTS_ERROR = 1,
+    _PY_GETOBJECTS_STOP = 2,
+};
+
+static int
+_Py_GetObject(_Py_hashtable_t *ht,
+              const void *key, const void *value,
+              void *user_data)
+{
+    PyObject *op = (PyObject *)key;
+    _Py_GetObjectsData *data = user_data;
+    if (data->limit > 0) {
+        if (PyList_GET_SIZE(data->list) >= data->limit) {
+            return _PY_GETOBJECTS_STOP;
+        }
+    }
+
+    if (op == data->self) {
+        return _PY_GETOBJECTS_IGNORE;
+    }
+    if (op == data->args) {
+        return _PY_GETOBJECTS_IGNORE;
+    }
+    if (op == data->list) {
+        return _PY_GETOBJECTS_IGNORE;
+    }
+    if (data->type != NULL) {
+        if (op == data->type) {
+            return _PY_GETOBJECTS_IGNORE;
+        }
+        if (!Py_IS_TYPE(op, (PyTypeObject *)data->type)) {
+            return _PY_GETOBJECTS_IGNORE;
+        }
+    }
+
+    if (PyList_Append(data->list, op) < 0) {
+        return _PY_GETOBJECTS_ERROR;
+    }
+    return 0;
 }
 
+
+/* The implementation of sys.getobjects(). */
 PyObject *
 _Py_GetObjects(PyObject *self, PyObject *args)
 {
-    int i, n;
-    PyObject *t = NULL;
-    PyObject *res, *op;
+    Py_ssize_t limit;
+    PyObject *type = NULL;
+    if (!PyArg_ParseTuple(args, "n|O", &limit, &type)) {
+        return NULL;
+    }
 
-    if (!PyArg_ParseTuple(args, "i|O", &n, &t))
+    PyObject *list = PyList_New(0);
+    if (list == NULL) {
         return NULL;
-    op = refchain._ob_next;
-    res = PyList_New(0);
-    if (res == NULL)
+    }
+
+    _Py_GetObjectsData data = {
+        .self = self,
+        .args = args,
+        .list = list,
+        .type = type,
+        .limit = limit,
+    };
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    int res = _Py_hashtable_foreach(REFCHAIN(interp), _Py_GetObject, &data);
+    if (res == _PY_GETOBJECTS_ERROR) {
+        Py_DECREF(list);
         return NULL;
-    for (i = 0; (n == 0 || i < n) && op != &refchain; i++) {
-        while (op == self || op == args || op == res || op == t ||
-               (t != NULL && !Py_IS_TYPE(op, (PyTypeObject *) t))) {
-            op = op->_ob_next;
-            if (op == &refchain)
-                return res;
-        }
-        if (PyList_Append(res, op) < 0) {
-            Py_DECREF(res);
-            return NULL;
-        }
-        op = op->_ob_next;
     }
-    return res;
+    return list;
 }
 
-#endif
+#undef REFCHAIN
+#undef REFCHAIN_VALUE
+
+#endif  /* Py_TRACE_REFS */
 
 
 /* Hack to force loading of abstract.o */
@@ -2658,6 +2931,10 @@ int Py_IsFalse(PyObject *x)
     return Py_Is(x, Py_False);
 }
 
-#ifdef __cplusplus
+
+// Py_SET_REFCNT() implementation for stable ABI
+void
+_Py_SetRefcnt(PyObject *ob, Py_ssize_t refcnt)
+{
+    Py_SET_REFCNT(ob, refcnt);
 }
-#endif
diff --git a/Objects/object_layout.md b/Objects/object_layout.md
index 9380b57938c8e3..3f7d72eb22f224 100644
--- a/Objects/object_layout.md
+++ b/Objects/object_layout.md
@@ -36,7 +36,7 @@ and the ``dict`` field points to the dictionary.
 
 ## 3.12 pre-header
 
-In 3.12 the the pointer to the list of weak references is added to the
+In 3.12 the pointer to the list of weak references is added to the
 pre-header. In order to make space for it, the ``dict`` and ``values``
 pointers are combined into a single tagged pointer:
 
@@ -45,7 +45,7 @@ pointers are combined into a single tagged pointer:
 
 If the object has no physical dictionary, then the ``dict_or_values``
 has its low bit set to one, and points to the values array.
-If the object has a physical dictioanry, then the ``dict_or_values``
+If the object has a physical dictionary, then the ``dict_or_values``
 has its low bit set to zero, and points to the dictionary.
 
 The untagged form is chosen for the dictionary pointer, rather than
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index 090129fe8653f2..b737c030957564 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -1,12 +1,20 @@
+/* Python's malloc wrappers (see pymem.h) */
+
 #include "Python.h"
 #include "pycore_code.h"          // stats
-#include "pycore_pystate.h"       // _PyInterpreterState_GET
-
+#include "pycore_object.h"        // _PyDebugAllocatorStats() definition
 #include "pycore_obmalloc.h"
+#include "pycore_pyerrors.h"      // _Py_FatalErrorFormat()
 #include "pycore_pymem.h"
+#include "pycore_pystate.h"       // _PyInterpreterState_GET
 
 #include <stdlib.h>               // malloc()
 #include <stdbool.h>
+#ifdef WITH_MIMALLOC
+#  include "pycore_mimalloc.h"
+#  include "mimalloc/static.c"
+#  include "mimalloc/internal.h"  // for stats
+#endif
 
 #undef  uint
 #define uint pymem_uint
@@ -15,13 +23,14 @@
 /* Defined in tracemalloc.c */
 extern void _PyMem_DumpTraceback(int fd, const void *ptr);
 
-
-/* Python's malloc wrappers (see pymem.h) */
-
 static void _PyObject_DebugDumpAddress(const void *p);
 static void _PyMem_DebugCheckAddress(const char *func, char api_id, const void *p);
 
-static void _PyMem_SetupDebugHooksDomain(PyMemAllocatorDomain domain);
+
+static void set_up_debug_hooks_domain_unlocked(PyMemAllocatorDomain domain);
+static void set_up_debug_hooks_unlocked(void);
+static void get_allocator_unlocked(PyMemAllocatorDomain, PyMemAllocatorEx *);
+static void set_allocator_unlocked(PyMemAllocatorDomain, PyMemAllocatorEx *);
 
 
 /***************************************/
@@ -70,25 +79,90 @@ _PyMem_RawFree(void *Py_UNUSED(ctx), void *ptr)
     free(ptr);
 }
 
+#ifdef WITH_MIMALLOC
+
+void *
+_PyMem_MiMalloc(void *ctx, size_t size)
+{
+    return mi_malloc(size);
+}
+
+void *
+_PyMem_MiCalloc(void *ctx, size_t nelem, size_t elsize)
+{
+    return mi_calloc(nelem, elsize);
+}
+
+void *
+_PyMem_MiRealloc(void *ctx, void *ptr, size_t size)
+{
+    return mi_realloc(ptr, size);
+}
+
+void
+_PyMem_MiFree(void *ctx, void *ptr)
+{
+    mi_free(ptr);
+}
+
+void *
+_PyObject_MiMalloc(void *ctx, size_t nbytes)
+{
+    return mi_malloc(nbytes);
+}
+
+void *
+_PyObject_MiCalloc(void *ctx, size_t nelem, size_t elsize)
+{
+    return mi_calloc(nelem, elsize);
+}
+
+
+void *
+_PyObject_MiRealloc(void *ctx, void *ptr, size_t nbytes)
+{
+    return mi_realloc(ptr, nbytes);
+}
+
+void
+_PyObject_MiFree(void *ctx, void *ptr)
+{
+    mi_free(ptr);
+}
+
+#endif // WITH_MIMALLOC
+
+
 #define MALLOC_ALLOC {NULL, _PyMem_RawMalloc, _PyMem_RawCalloc, _PyMem_RawRealloc, _PyMem_RawFree}
-#define PYRAW_ALLOC MALLOC_ALLOC
 
-/* the default object allocator */
+
+#ifdef WITH_MIMALLOC
+#  define MIMALLOC_ALLOC {NULL, _PyMem_MiMalloc, _PyMem_MiCalloc, _PyMem_MiRealloc, _PyMem_MiFree}
+#  define MIMALLOC_OBJALLOC {NULL, _PyObject_MiMalloc, _PyObject_MiCalloc, _PyObject_MiRealloc, _PyObject_MiFree}
+#endif
+
+/* the pymalloc allocator */
 
 // The actual implementation is further down.
 
-#ifdef WITH_PYMALLOC
+#if defined(WITH_PYMALLOC)
 void* _PyObject_Malloc(void *ctx, size_t size);
 void* _PyObject_Calloc(void *ctx, size_t nelem, size_t elsize);
 void _PyObject_Free(void *ctx, void *p);
 void* _PyObject_Realloc(void *ctx, void *ptr, size_t size);
 #  define PYMALLOC_ALLOC {NULL, _PyObject_Malloc, _PyObject_Calloc, _PyObject_Realloc, _PyObject_Free}
+#endif  // WITH_PYMALLOC
+
+#if defined(WITH_PYMALLOC)
+#  define PYRAW_ALLOC MALLOC_ALLOC
+#  define PYMEM_ALLOC PYMALLOC_ALLOC
 #  define PYOBJ_ALLOC PYMALLOC_ALLOC
 #else
+#  define PYRAW_ALLOC MALLOC_ALLOC
+#  define PYMEM_ALLOC MALLOC_ALLOC
 #  define PYOBJ_ALLOC MALLOC_ALLOC
-#endif  // WITH_PYMALLOC
+#endif
 
-#define PYMEM_ALLOC PYOBJ_ALLOC
 
 /* the default debug allocators */
 
@@ -200,6 +274,7 @@ _PyMem_ArenaFree(void *Py_UNUSED(ctx), void *ptr,
 #endif
 
 
+#define ALLOCATORS_MUTEX (_PyRuntime.allocators.mutex)
 #define _PyMem_Raw (_PyRuntime.allocators.standard.raw)
 #define _PyMem (_PyRuntime.allocators.standard.mem)
 #define _PyObject (_PyRuntime.allocators.standard.obj)
@@ -207,12 +282,16 @@ _PyMem_ArenaFree(void *Py_UNUSED(ctx), void *ptr,
 #define _PyObject_Arena (_PyRuntime.allocators.obj_arena)
 
 
+/***************************/
+/* managing the allocators */
+/***************************/
+
 static int
-pymem_set_default_allocator(PyMemAllocatorDomain domain, int debug,
-                            PyMemAllocatorEx *old_alloc)
+set_default_allocator_unlocked(PyMemAllocatorDomain domain, int debug,
+                               PyMemAllocatorEx *old_alloc)
 {
     if (old_alloc != NULL) {
-        PyMem_GetAllocator(domain, old_alloc);
+        get_allocator_unlocked(domain, old_alloc);
     }
 
 
@@ -232,24 +311,28 @@ pymem_set_default_allocator(PyMemAllocatorDomain domain, int debug,
         /* unknown domain */
         return -1;
     }
-    PyMem_SetAllocator(domain, &new_alloc);
+    set_allocator_unlocked(domain, &new_alloc);
     if (debug) {
-        _PyMem_SetupDebugHooksDomain(domain);
+        set_up_debug_hooks_domain_unlocked(domain);
     }
     return 0;
 }
 
 
+#ifdef Py_DEBUG
+static const int pydebug = 1;
+#else
+static const int pydebug = 0;
+#endif
+
 int
 _PyMem_SetDefaultAllocator(PyMemAllocatorDomain domain,
                            PyMemAllocatorEx *old_alloc)
 {
-#ifdef Py_DEBUG
-    const int debug = 1;
-#else
-    const int debug = 0;
-#endif
-    return pymem_set_default_allocator(domain, debug, old_alloc);
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    int res = set_default_allocator_unlocked(domain, pydebug, old_alloc);
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
+    return res;
 }
 
 
@@ -274,6 +357,14 @@ _PyMem_GetAllocatorName(const char *name, PyMemAllocatorName *allocator)
     else if (strcmp(name, "pymalloc_debug") == 0) {
         *allocator = PYMEM_ALLOCATOR_PYMALLOC_DEBUG;
     }
+#endif
+#ifdef WITH_MIMALLOC
+    else if (strcmp(name, "mimalloc") == 0) {
+        *allocator = PYMEM_ALLOCATOR_MIMALLOC;
+    }
+    else if (strcmp(name, "mimalloc_debug") == 0) {
+        *allocator = PYMEM_ALLOCATOR_MIMALLOC_DEBUG;
+    }
 #endif
     else if (strcmp(name, "malloc") == 0) {
         *allocator = PYMEM_ALLOCATOR_MALLOC;
@@ -289,8 +380,8 @@ _PyMem_GetAllocatorName(const char *name, PyMemAllocatorName *allocator)
 }
 
 
-int
-_PyMem_SetupAllocators(PyMemAllocatorName allocator)
+static int
+set_up_allocators_unlocked(PyMemAllocatorName allocator)
 {
     switch (allocator) {
     case PYMEM_ALLOCATOR_NOT_SET:
@@ -298,15 +389,15 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
         break;
 
     case PYMEM_ALLOCATOR_DEFAULT:
-        (void)_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, NULL);
-        (void)_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_MEM, NULL);
-        (void)_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_OBJ, NULL);
+        (void)set_default_allocator_unlocked(PYMEM_DOMAIN_RAW, pydebug, NULL);
+        (void)set_default_allocator_unlocked(PYMEM_DOMAIN_MEM, pydebug, NULL);
+        (void)set_default_allocator_unlocked(PYMEM_DOMAIN_OBJ, pydebug, NULL);
         break;
 
     case PYMEM_ALLOCATOR_DEBUG:
-        (void)pymem_set_default_allocator(PYMEM_DOMAIN_RAW, 1, NULL);
-        (void)pymem_set_default_allocator(PYMEM_DOMAIN_MEM, 1, NULL);
-        (void)pymem_set_default_allocator(PYMEM_DOMAIN_OBJ, 1, NULL);
+        (void)set_default_allocator_unlocked(PYMEM_DOMAIN_RAW, 1, NULL);
+        (void)set_default_allocator_unlocked(PYMEM_DOMAIN_MEM, 1, NULL);
+        (void)set_default_allocator_unlocked(PYMEM_DOMAIN_OBJ, 1, NULL);
         break;
 
 #ifdef WITH_PYMALLOC
@@ -314,29 +405,49 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
     case PYMEM_ALLOCATOR_PYMALLOC_DEBUG:
     {
         PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
-        PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &malloc_alloc);
+        set_allocator_unlocked(PYMEM_DOMAIN_RAW, &malloc_alloc);
 
         PyMemAllocatorEx pymalloc = PYMALLOC_ALLOC;
-        PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &pymalloc);
-        PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &pymalloc);
+        set_allocator_unlocked(PYMEM_DOMAIN_MEM, &pymalloc);
+        set_allocator_unlocked(PYMEM_DOMAIN_OBJ, &pymalloc);
 
         if (allocator == PYMEM_ALLOCATOR_PYMALLOC_DEBUG) {
-            PyMem_SetupDebugHooks();
+            set_up_debug_hooks_unlocked();
         }
         break;
     }
 #endif
+#ifdef WITH_MIMALLOC
+    case PYMEM_ALLOCATOR_MIMALLOC:
+    case PYMEM_ALLOCATOR_MIMALLOC_DEBUG:
+    {
+        PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
+        set_allocator_unlocked(PYMEM_DOMAIN_RAW, &malloc_alloc);
+
+        PyMemAllocatorEx pymalloc = MIMALLOC_ALLOC;
+        set_allocator_unlocked(PYMEM_DOMAIN_MEM, &pymalloc);
+
+        PyMemAllocatorEx objmalloc = MIMALLOC_OBJALLOC;
+        set_allocator_unlocked(PYMEM_DOMAIN_OBJ, &objmalloc);
+
+        if (allocator == PYMEM_ALLOCATOR_MIMALLOC_DEBUG) {
+            set_up_debug_hooks_unlocked();
+        }
+
+        break;
+    }
+#endif
 
     case PYMEM_ALLOCATOR_MALLOC:
     case PYMEM_ALLOCATOR_MALLOC_DEBUG:
     {
         PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
-        PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &malloc_alloc);
-        PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &malloc_alloc);
-        PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &malloc_alloc);
+        set_allocator_unlocked(PYMEM_DOMAIN_RAW, &malloc_alloc);
+        set_allocator_unlocked(PYMEM_DOMAIN_MEM, &malloc_alloc);
+        set_allocator_unlocked(PYMEM_DOMAIN_OBJ, &malloc_alloc);
 
         if (allocator == PYMEM_ALLOCATOR_MALLOC_DEBUG) {
-            PyMem_SetupDebugHooks();
+            set_up_debug_hooks_unlocked();
         }
         break;
     }
@@ -345,9 +456,19 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
         /* unknown allocator */
         return -1;
     }
+
     return 0;
 }
 
+int
+_PyMem_SetupAllocators(PyMemAllocatorName allocator)
+{
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    int res = set_up_allocators_unlocked(allocator);
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
+    return res;
+}
+
 
 static int
 pymemallocator_eq(PyMemAllocatorEx *a, PyMemAllocatorEx *b)
@@ -356,13 +477,17 @@ pymemallocator_eq(PyMemAllocatorEx *a, PyMemAllocatorEx *b)
 }
 
 
-const char*
-_PyMem_GetCurrentAllocatorName(void)
+static const char*
+get_current_allocator_name_unlocked(void)
 {
     PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
 #ifdef WITH_PYMALLOC
     PyMemAllocatorEx pymalloc = PYMALLOC_ALLOC;
 #endif
+#ifdef WITH_MIMALLOC
+    PyMemAllocatorEx mimalloc = MIMALLOC_ALLOC;
+    PyMemAllocatorEx mimalloc_obj = MIMALLOC_OBJALLOC;
+#endif
 
     if (pymemallocator_eq(&_PyMem_Raw, &malloc_alloc) &&
         pymemallocator_eq(&_PyMem, &malloc_alloc) &&
@@ -378,6 +503,14 @@ _PyMem_GetCurrentAllocatorName(void)
         return "pymalloc";
     }
 #endif
+#ifdef WITH_MIMALLOC
+    if (pymemallocator_eq(&_PyMem_Raw, &malloc_alloc) &&
+        pymemallocator_eq(&_PyMem, &mimalloc) &&
+        pymemallocator_eq(&_PyObject, &mimalloc_obj))
+    {
+        return "mimalloc";
+    }
+#endif
 
     PyMemAllocatorEx dbg_raw = PYDBGRAW_ALLOC;
     PyMemAllocatorEx dbg_mem = PYDBGMEM_ALLOC;
@@ -401,11 +534,28 @@ _PyMem_GetCurrentAllocatorName(void)
         {
             return "pymalloc_debug";
         }
+#endif
+#ifdef WITH_MIMALLOC
+        if (pymemallocator_eq(&_PyMem_Debug.raw.alloc, &malloc_alloc) &&
+            pymemallocator_eq(&_PyMem_Debug.mem.alloc, &mimalloc) &&
+            pymemallocator_eq(&_PyMem_Debug.obj.alloc, &mimalloc_obj))
+        {
+            return "mimalloc_debug";
+        }
 #endif
     }
     return NULL;
 }
 
+const char*
+_PyMem_GetCurrentAllocatorName(void)
+{
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    const char *name = get_current_allocator_name_unlocked();
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
+    return name;
+}
+
 
 #ifdef WITH_PYMALLOC
 static int
@@ -424,11 +574,25 @@ _PyMem_PymallocEnabled(void)
         return (_PyObject.malloc == _PyObject_Malloc);
     }
 }
-#endif
+
+#ifdef WITH_MIMALLOC
+static int
+_PyMem_MimallocEnabled(void)
+{
+    if (_PyMem_DebugEnabled()) {
+        return (_PyMem_Debug.obj.alloc.malloc == _PyObject_MiMalloc);
+    }
+    else {
+        return (_PyObject.malloc == _PyObject_MiMalloc);
+    }
+}
+#endif  // WITH_MIMALLOC
+
+#endif  // WITH_PYMALLOC
 
 
 static void
-_PyMem_SetupDebugHooksDomain(PyMemAllocatorDomain domain)
+set_up_debug_hooks_domain_unlocked(PyMemAllocatorDomain domain)
 {
     PyMemAllocatorEx alloc;
 
@@ -437,53 +601,61 @@ _PyMem_SetupDebugHooksDomain(PyMemAllocatorDomain domain)
             return;
         }
 
-        PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &_PyMem_Debug.raw.alloc);
+        get_allocator_unlocked(domain, &_PyMem_Debug.raw.alloc);
         alloc.ctx = &_PyMem_Debug.raw;
         alloc.malloc = _PyMem_DebugRawMalloc;
         alloc.calloc = _PyMem_DebugRawCalloc;
         alloc.realloc = _PyMem_DebugRawRealloc;
         alloc.free = _PyMem_DebugRawFree;
-        PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &alloc);
+        set_allocator_unlocked(domain, &alloc);
     }
     else if (domain == PYMEM_DOMAIN_MEM) {
         if (_PyMem.malloc == _PyMem_DebugMalloc) {
             return;
         }
 
-        PyMem_GetAllocator(PYMEM_DOMAIN_MEM, &_PyMem_Debug.mem.alloc);
+        get_allocator_unlocked(domain, &_PyMem_Debug.mem.alloc);
         alloc.ctx = &_PyMem_Debug.mem;
         alloc.malloc = _PyMem_DebugMalloc;
         alloc.calloc = _PyMem_DebugCalloc;
         alloc.realloc = _PyMem_DebugRealloc;
         alloc.free = _PyMem_DebugFree;
-        PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &alloc);
+        set_allocator_unlocked(domain, &alloc);
     }
     else if (domain == PYMEM_DOMAIN_OBJ)  {
         if (_PyObject.malloc == _PyMem_DebugMalloc) {
             return;
         }
 
-        PyMem_GetAllocator(PYMEM_DOMAIN_OBJ, &_PyMem_Debug.obj.alloc);
+        get_allocator_unlocked(domain, &_PyMem_Debug.obj.alloc);
         alloc.ctx = &_PyMem_Debug.obj;
         alloc.malloc = _PyMem_DebugMalloc;
         alloc.calloc = _PyMem_DebugCalloc;
         alloc.realloc = _PyMem_DebugRealloc;
         alloc.free = _PyMem_DebugFree;
-        PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &alloc);
+        set_allocator_unlocked(domain, &alloc);
     }
 }
 
 
+static void
+set_up_debug_hooks_unlocked(void)
+{
+    set_up_debug_hooks_domain_unlocked(PYMEM_DOMAIN_RAW);
+    set_up_debug_hooks_domain_unlocked(PYMEM_DOMAIN_MEM);
+    set_up_debug_hooks_domain_unlocked(PYMEM_DOMAIN_OBJ);
+}
+
 void
 PyMem_SetupDebugHooks(void)
 {
-    _PyMem_SetupDebugHooksDomain(PYMEM_DOMAIN_RAW);
-    _PyMem_SetupDebugHooksDomain(PYMEM_DOMAIN_MEM);
-    _PyMem_SetupDebugHooksDomain(PYMEM_DOMAIN_OBJ);
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    set_up_debug_hooks_unlocked();
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
 }
 
-void
-PyMem_GetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
+static void
+get_allocator_unlocked(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
 {
     switch(domain)
     {
@@ -500,8 +672,8 @@ PyMem_GetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
     }
 }
 
-void
-PyMem_SetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
+static void
+set_allocator_unlocked(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
 {
     switch(domain)
     {
@@ -512,12 +684,57 @@ PyMem_SetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
     }
 }
 
+void
+PyMem_GetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
+{
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    get_allocator_unlocked(domain, allocator);
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
+}
+
+void
+PyMem_SetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
+{
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    set_allocator_unlocked(domain, allocator);
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
+}
+
 void
 PyObject_GetArenaAllocator(PyObjectArenaAllocator *allocator)
 {
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
     *allocator = _PyObject_Arena;
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
 }
 
+void
+PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator)
+{
+    PyMutex_Lock(&ALLOCATORS_MUTEX);
+    _PyObject_Arena = *allocator;
+    PyMutex_Unlock(&ALLOCATORS_MUTEX);
+}
+
+
+/* Note that there is a possible, but very unlikely, race in any place
+ * below where we call one of the allocator functions.  We access two
+ * fields in each case:  "malloc", etc. and "ctx".
+ *
+ * It is unlikely that the allocator will be changed while one of those
+ * calls is happening, much less in that very narrow window.
+ * Furthermore, the likelihood of a race is drastically reduced by the
+ * fact that the allocator may not be changed after runtime init
+ * (except with a wrapper).
+ *
+ * With the above in mind, we currently don't worry about locking
+ * around these uses of the runtime-global allocators state. */
+
+
+/*************************/
+/* the "arena" allocator */
+/*************************/
+
 void *
 _PyObject_VirtualAlloc(size_t size)
 {
@@ -530,11 +747,10 @@ _PyObject_VirtualFree(void *obj, size_t size)
     _PyObject_Arena.free(_PyObject_Arena.ctx, obj, size);
 }
 
-void
-PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator)
-{
-    _PyObject_Arena = *allocator;
-}
+
+/***********************/
+/* the "raw" allocator */
+/***********************/
 
 void *
 PyMem_RawMalloc(size_t size)
@@ -574,6 +790,10 @@ void PyMem_RawFree(void *ptr)
 }
 
 
+/***********************/
+/* the "mem" allocator */
+/***********************/
+
 void *
 PyMem_Malloc(size_t size)
 {
@@ -617,6 +837,10 @@ PyMem_Free(void *ptr)
 }
 
 
+/***************************/
+/* pymem utility functions */
+/***************************/
+
 wchar_t*
 _PyMem_RawWcsdup(const wchar_t *str)
 {
@@ -663,6 +887,11 @@ _PyMem_Strdup(const char *str)
     return copy;
 }
 
+
+/**************************/
+/* the "object" allocator */
+/**************************/
+
 void *
 PyObject_Malloc(size_t size)
 {
@@ -757,9 +986,31 @@ get_state(void)
 #define narenas_highwater (state->mgmt.narenas_highwater)
 #define raw_allocated_blocks (state->mgmt.raw_allocated_blocks)
 
+#ifdef WITH_MIMALLOC
+static bool count_blocks(
+    const mi_heap_t* heap, const mi_heap_area_t* area,
+    void* block, size_t block_size, void* allocated_blocks)
+{
+    *(size_t *)allocated_blocks += area->used;
+    return 1;
+}
+#endif
+
 Py_ssize_t
 _PyInterpreterState_GetAllocatedBlocks(PyInterpreterState *interp)
 {
+#ifdef WITH_MIMALLOC
+    // TODO(sgross): this only counts the current thread's blocks.
+    if (_PyMem_MimallocEnabled()) {
+        size_t allocated_blocks = 0;
+
+        mi_heap_t *heap = mi_heap_get_default();
+        mi_heap_visit_blocks(heap, false, &count_blocks, &allocated_blocks);
+
+        return allocated_blocks;
+    }
+#endif
+
 #ifdef Py_DEBUG
     assert(has_own_state(interp));
 #else
@@ -793,6 +1044,11 @@ _PyInterpreterState_GetAllocatedBlocks(PyInterpreterState *interp)
 void
 _PyInterpreterState_FinalizeAllocatedBlocks(PyInterpreterState *interp)
 {
+#ifdef WITH_MIMALLOC
+    if (_PyMem_MimallocEnabled()) {
+        return;
+    }
+#endif
     if (has_own_state(interp)) {
         Py_ssize_t leaked = _PyInterpreterState_GetAllocatedBlocks(interp);
         assert(has_own_state(interp) || leaked == 0);
@@ -818,6 +1074,16 @@ _Py_FinalizeAllocatedBlocks(_PyRuntimeState *runtime)
 static Py_ssize_t
 get_num_global_allocated_blocks(_PyRuntimeState *runtime)
 {
+#ifdef WITH_MIMALLOC
+    if (_PyMem_MimallocEnabled()) {
+        size_t allocated_blocks = 0;
+
+        mi_heap_t *heap = mi_heap_get_default();
+        mi_heap_visit_blocks(heap, false, &count_blocks, &allocated_blocks);
+
+        return allocated_blocks;
+    }
+#endif
     Py_ssize_t total = 0;
     if (_PyRuntimeState_GetFinalizing(runtime) != NULL) {
         PyInterpreterState *interp = _PyInterpreterState_Main();
@@ -2410,19 +2676,55 @@ pool_is_in_list(const poolp target, poolp list)
 }
 #endif
 
-/* Print summary info to "out" about the state of pymalloc's structures.
- * In Py_DEBUG mode, also perform some expensive internal consistency
- * checks.
- *
- * Return 0 if the memory debug hooks are not installed or no statistics was
- * written into out, return 1 otherwise.
- */
-int
-_PyObject_DebugMallocStats(FILE *out)
+#ifdef WITH_MIMALLOC
+struct _alloc_stats {
+    size_t allocated_blocks;
+    size_t allocated_bytes;
+    size_t allocated_with_overhead;
+    size_t bytes_reserved;
+    size_t bytes_committed;
+};
+
+static bool _collect_alloc_stats(
+    const mi_heap_t* heap, const mi_heap_area_t* area,
+    void* block, size_t block_size, void* arg)
+{
+    struct _alloc_stats *stats = (struct _alloc_stats *)arg;
+    stats->allocated_blocks += area->used;
+    stats->allocated_bytes += area->used * area->block_size;
+    stats->allocated_with_overhead += area->used * area->full_block_size;
+    stats->bytes_reserved += area->reserved;
+    stats->bytes_committed += area->committed;
+    return 1;
+}
+
+static void
+py_mimalloc_print_stats(FILE *out)
+{
+    fprintf(out, "Small block threshold = %zd, in %u size classes.\n",
+        MI_SMALL_OBJ_SIZE_MAX, MI_BIN_HUGE);
+    fprintf(out, "Medium block threshold = %zd\n",
+            MI_MEDIUM_OBJ_SIZE_MAX);
+    fprintf(out, "Large object max size = %zd\n",
+            MI_LARGE_OBJ_SIZE_MAX);
+
+    mi_heap_t *heap = mi_heap_get_default();
+    struct _alloc_stats stats;
+    memset(&stats, 0, sizeof(stats));
+    mi_heap_visit_blocks(heap, false, &_collect_alloc_stats, &stats);
+
+    fprintf(out, "    Allocated Blocks: %zd\n", stats.allocated_blocks);
+    fprintf(out, "    Allocated Bytes: %zd\n", stats.allocated_bytes);
+    fprintf(out, "    Allocated Bytes w/ Overhead: %zd\n", stats.allocated_with_overhead);
+    fprintf(out, "    Bytes Reserved: %zd\n", stats.bytes_reserved);
+    fprintf(out, "    Bytes Committed: %zd\n", stats.bytes_committed);
+}
+#endif
+
+
+static void
+pymalloc_print_stats(FILE *out)
 {
-    if (!_PyMem_PymallocEnabled()) {
-        return 0;
-    }
     OMState *state = get_state();
 
     uint i;
@@ -2575,7 +2877,32 @@ _PyObject_DebugMallocStats(FILE *out)
 #endif
 #endif
 
-    return 1;
+}
+
+/* Print summary info to "out" about the state of pymalloc's structures.
+ * In Py_DEBUG mode, also perform some expensive internal consistency
+ * checks.
+ *
+ * Return 0 if the memory debug hooks are not installed or no statistics was
+ * written into out, return 1 otherwise.
+ */
+int
+_PyObject_DebugMallocStats(FILE *out)
+{
+#ifdef WITH_MIMALLOC
+    if (_PyMem_MimallocEnabled()) {
+        py_mimalloc_print_stats(out);
+        return 1;
+    }
+    else
+#endif
+    if (_PyMem_PymallocEnabled()) {
+        pymalloc_print_stats(out);
+        return 1;
+    }
+    else {
+        return 0;
+    }
 }
 
 #endif /* #ifdef WITH_PYMALLOC */
diff --git a/Objects/odictobject.c b/Objects/odictobject.c
index 39b0f684510578..b5280c39e1be54 100644
--- a/Objects/odictobject.c
+++ b/Objects/odictobject.c
@@ -466,8 +466,10 @@ Potential Optimizations
 
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
-#include "pycore_object.h"        // _PyObject_GC_UNTRACK()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_dict.h"          // _Py_dict_lookup()
+#include "pycore_object.h"        // _PyObject_GC_UNTRACK()
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
 #include <stddef.h>               // offsetof()
 
 #include "clinic/odictobject.c.h"
@@ -1047,7 +1049,10 @@ _odict_popkey_hash(PyObject *od, PyObject *key, PyObject *failobj,
             return NULL;
         }
         /* Now delete the value from the dict. */
-        value = _PyDict_Pop_KnownHash(od, key, hash, failobj);
+        if (_PyDict_Pop_KnownHash((PyDictObject *)od, key, hash,
+                                  &value) == 0) {
+            value = Py_NewRef(failobj);
+        }
     }
     else if (value == NULL && !PyErr_Occurred()) {
         /* Apply the fallback value, if necessary. */
@@ -2154,7 +2159,7 @@ mutablemapping_update_arg(PyObject *self, PyObject *arg)
         return res;
     }
     PyObject *func;
-    if (_PyObject_LookupAttr(arg, &_Py_ID(keys), &func) < 0) {
+    if (PyObject_GetOptionalAttr(arg, &_Py_ID(keys), &func) < 0) {
         return -1;
     }
     if (func != NULL) {
@@ -2186,7 +2191,7 @@ mutablemapping_update_arg(PyObject *self, PyObject *arg)
         }
         return 0;
     }
-    if (_PyObject_LookupAttr(arg, &_Py_ID(items), &func) < 0) {
+    if (PyObject_GetOptionalAttr(arg, &_Py_ID(items), &func) < 0) {
         return -1;
     }
     if (func != NULL) {
diff --git a/Objects/picklebufobject.c b/Objects/picklebufobject.c
index aaa852cfbb05b0..ca83a0a0806ce1 100644
--- a/Objects/picklebufobject.c
+++ b/Objects/picklebufobject.c
@@ -1,6 +1,5 @@
 /* PickleBuffer object implementation */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include <stddef.h>
 
diff --git a/Objects/rangeobject.c b/Objects/rangeobject.c
index beb86b9623bdbc..ce9eef69ad75a8 100644
--- a/Objects/rangeobject.c
+++ b/Objects/rangeobject.c
@@ -2,10 +2,12 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
-#include "pycore_range.h"
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_long.h"          // _PyLong_GetZero()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
+#include "pycore_range.h"
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
-#include "structmember.h"         // PyMemberDef
+
 
 /* Support objects whose length is > PY_SSIZE_T_MAX.
 
@@ -105,8 +107,8 @@ range_from_array(PyTypeObject *type, PyObject *const *args, Py_ssize_t num_args)
             if (!stop) {
                 return NULL;
             }
-            start = Py_NewRef(_PyLong_GetZero());
-            step = Py_NewRef(_PyLong_GetOne());
+            start = _PyLong_GetZero();
+            step = _PyLong_GetOne();
             break;
         case 0:
             PyErr_SetString(PyExc_TypeError,
@@ -756,9 +758,9 @@ static PyMethodDef range_methods[] = {
 };
 
 static PyMemberDef range_members[] = {
-    {"start",   T_OBJECT_EX,    offsetof(rangeobject, start),   READONLY},
-    {"stop",    T_OBJECT_EX,    offsetof(rangeobject, stop),    READONLY},
-    {"step",    T_OBJECT_EX,    offsetof(rangeobject, step),    READONLY},
+    {"start",   Py_T_OBJECT_EX,    offsetof(rangeobject, start),   Py_READONLY},
+    {"stop",    Py_T_OBJECT_EX,    offsetof(rangeobject, stop),    Py_READONLY},
+    {"step",    Py_T_OBJECT_EX,    offsetof(rangeobject, step),    Py_READONLY},
     {0}
 };
 
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 58f0ae73c0c403..88d20019bfb4a7 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -32,7 +32,12 @@
 */
 
 #include "Python.h"
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
+#include "pycore_dict.h"          // _PyDict_Contains_KnownHash()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
+#include "pycore_pyerrors.h"      // _PyErr_SetKeyError()
+#include "pycore_setobject.h"     // _PySet_NextEntry() definition
 #include <stddef.h>               // offsetof()
 
 /* Object used as dummy key to fill deleted entries */
@@ -937,7 +942,10 @@ set_update(PySetObject *so, PyObject *args)
 }
 
 PyDoc_STRVAR(update_doc,
-"Update a set with the union of itself and others.");
+"update($self, /, *others)\n\
+--\n\
+\n\
+Update the set, adding elements from all others.");
 
 /* XXX Todo:
    If aligned memory allocations become available, make the
@@ -1136,9 +1144,10 @@ set_union(PySetObject *so, PyObject *args)
 }
 
 PyDoc_STRVAR(union_doc,
- "Return the union of sets as a new set.\n\
+"union($self, /, *others)\n\
+--\n\
 \n\
-(i.e. all elements that are in either set.)");
+Return a new set with elements from the set and all others.");
 
 static PyObject *
 set_or(PySetObject *so, PyObject *other)
@@ -1276,9 +1285,10 @@ set_intersection_multi(PySetObject *so, PyObject *args)
 }
 
 PyDoc_STRVAR(intersection_doc,
-"Return the intersection of two sets as a new set.\n\
+"intersection($self, /, *others)\n\
+--\n\
 \n\
-(i.e. all elements that are in both sets.)");
+Return a new set with elements common to the set and all others.");
 
 static PyObject *
 set_intersection_update(PySetObject *so, PyObject *other)
@@ -1307,7 +1317,10 @@ set_intersection_update_multi(PySetObject *so, PyObject *args)
 }
 
 PyDoc_STRVAR(intersection_update_doc,
-"Update a set with the intersection of itself and another.");
+"intersection_update($self, /, *others)\n\
+--\n\
+\n\
+Update the set, keeping only elements found in it and all others.");
 
 static PyObject *
 set_and(PySetObject *so, PyObject *other)
@@ -1465,7 +1478,10 @@ set_difference_update(PySetObject *so, PyObject *args)
 }
 
 PyDoc_STRVAR(difference_update_doc,
-"Remove all elements of another set from this set.");
+"difference_update($self, /, *others)\n\
+--\n\
+\n\
+Update the set, removing elements found in others.");
 
 static PyObject *
 set_copy_and_difference(PySetObject *so, PyObject *other)
@@ -1582,9 +1598,10 @@ set_difference_multi(PySetObject *so, PyObject *args)
 }
 
 PyDoc_STRVAR(difference_doc,
-"Return the difference of two or more sets as a new set.\n\
+"difference($self, /, *others)\n\
+--\n\
 \n\
-(i.e. all elements that are in this set but not the others.)");
+Return a new set with elements in the set that are not in the others.");
 static PyObject *
 set_sub(PySetObject *so, PyObject *other)
 {
@@ -1668,7 +1685,10 @@ set_symmetric_difference_update(PySetObject *so, PyObject *other)
 }
 
 PyDoc_STRVAR(symmetric_difference_update_doc,
-"Update a set with the symmetric difference of itself and another.");
+"symmetric_difference_update($self, other, /)\n\
+--\n\
+\n\
+Update the set, keeping only elements found in either set, but not in both.");
 
 static PyObject *
 set_symmetric_difference(PySetObject *so, PyObject *other)
@@ -1689,9 +1709,10 @@ set_symmetric_difference(PySetObject *so, PyObject *other)
 }
 
 PyDoc_STRVAR(symmetric_difference_doc,
-"Return the symmetric difference of two sets as a new set.\n\
+"symmetric_difference($self, other, /)\n\
+--\n\
 \n\
-(i.e. all elements that are in exactly one of the sets.)");
+Return a new set with elements in either the set or other but not both.");
 
 static PyObject *
 set_xor(PySetObject *so, PyObject *other)
@@ -2017,13 +2038,6 @@ static PySequenceMethods set_as_sequence = {
 
 /* set object ********************************************************/
 
-#ifdef Py_DEBUG
-static PyObject *test_c_api(PySetObject *so, PyObject *Py_UNUSED(ignored));
-
-PyDoc_STRVAR(test_c_api_doc, "Exercises C API.  Returns True.\n\
-All is well if assertions don't fail.");
-#endif
-
 static PyMethodDef set_methods[] = {
     {"add",             (PyCFunction)set_add,           METH_O,
      add_doc},
@@ -2061,10 +2075,6 @@ static PyMethodDef set_methods[] = {
      symmetric_difference_doc},
     {"symmetric_difference_update",(PyCFunction)set_symmetric_difference_update,        METH_O,
      symmetric_difference_update_doc},
-#ifdef Py_DEBUG
-    {"test_c_api",      (PyCFunction)test_c_api,        METH_NOARGS,
-     test_c_api_doc},
-#endif
     {"union",           (PyCFunction)set_union,         METH_VARARGS,
      union_doc},
     {"update",          (PyCFunction)set_update,        METH_VARARGS,
@@ -2106,8 +2116,8 @@ static PyNumberMethods set_as_number = {
 };
 
 PyDoc_STRVAR(set_doc,
-"set() -> new empty set object\n\
-set(iterable) -> new set object\n\
+"set(iterable=(), /)\n\
+--\n\
 \n\
 Build an unordered collection of unique elements.");
 
@@ -2207,8 +2217,8 @@ static PyNumberMethods frozenset_as_number = {
 };
 
 PyDoc_STRVAR(frozenset_doc,
-"frozenset() -> empty frozenset object\n\
-frozenset(iterable) -> frozenset object\n\
+"frozenset(iterable=(), /)\n\
+--\n\
 \n\
 Build an immutable unordered collection of unique elements.");
 
@@ -2363,148 +2373,6 @@ _PySet_Update(PyObject *set, PyObject *iterable)
 /* Exported for the gdb plugin's benefit. */
 PyObject *_PySet_Dummy = dummy;
 
-#ifdef Py_DEBUG
-
-/* Test code to be called with any three element set.
-   Returns True and original set is restored. */
-
-#define assertRaises(call_return_value, exception)              \
-    do {                                                        \
-        assert(call_return_value);                              \
-        assert(PyErr_ExceptionMatches(exception));              \
-        PyErr_Clear();                                          \
-    } while(0)
-
-static PyObject *
-test_c_api(PySetObject *so, PyObject *Py_UNUSED(ignored))
-{
-    Py_ssize_t count;
-    const char *s;
-    Py_ssize_t i;
-    PyObject *elem=NULL, *dup=NULL, *t, *f, *dup2, *x=NULL;
-    PyObject *ob = (PyObject *)so;
-    Py_hash_t hash;
-    PyObject *str;
-
-    /* Verify preconditions */
-    assert(PyAnySet_Check(ob));
-    assert(PyAnySet_CheckExact(ob));
-    assert(!PyFrozenSet_CheckExact(ob));
-
-    /* so.clear(); so |= set("abc"); */
-    str = PyUnicode_FromString("abc");
-    if (str == NULL)
-        return NULL;
-    set_clear_internal(so);
-    if (set_update_internal(so, str)) {
-        Py_DECREF(str);
-        return NULL;
-    }
-    Py_DECREF(str);
-
-    /* Exercise type/size checks */
-    assert(PySet_Size(ob) == 3);
-    assert(PySet_GET_SIZE(ob) == 3);
-
-    /* Raise TypeError for non-iterable constructor arguments */
-    assertRaises(PySet_New(Py_None) == NULL, PyExc_TypeError);
-    assertRaises(PyFrozenSet_New(Py_None) == NULL, PyExc_TypeError);
-
-    /* Raise TypeError for unhashable key */
-    dup = PySet_New(ob);
-    assertRaises(PySet_Discard(ob, dup) == -1, PyExc_TypeError);
-    assertRaises(PySet_Contains(ob, dup) == -1, PyExc_TypeError);
-    assertRaises(PySet_Add(ob, dup) == -1, PyExc_TypeError);
-
-    /* Exercise successful pop, contains, add, and discard */
-    elem = PySet_Pop(ob);
-    assert(PySet_Contains(ob, elem) == 0);
-    assert(PySet_GET_SIZE(ob) == 2);
-    assert(PySet_Add(ob, elem) == 0);
-    assert(PySet_Contains(ob, elem) == 1);
-    assert(PySet_GET_SIZE(ob) == 3);
-    assert(PySet_Discard(ob, elem) == 1);
-    assert(PySet_GET_SIZE(ob) == 2);
-    assert(PySet_Discard(ob, elem) == 0);
-    assert(PySet_GET_SIZE(ob) == 2);
-
-    /* Exercise clear */
-    dup2 = PySet_New(dup);
-    assert(PySet_Clear(dup2) == 0);
-    assert(PySet_Size(dup2) == 0);
-    Py_DECREF(dup2);
-
-    /* Raise SystemError on clear or update of frozen set */
-    f = PyFrozenSet_New(dup);
-    assertRaises(PySet_Clear(f) == -1, PyExc_SystemError);
-    assertRaises(_PySet_Update(f, dup) == -1, PyExc_SystemError);
-    assert(PySet_Add(f, elem) == 0);
-    Py_INCREF(f);
-    assertRaises(PySet_Add(f, elem) == -1, PyExc_SystemError);
-    Py_DECREF(f);
-    Py_DECREF(f);
-
-    /* Exercise direct iteration */
-    i = 0, count = 0;
-    while (_PySet_NextEntry((PyObject *)dup, &i, &x, &hash)) {
-        s = PyUnicode_AsUTF8(x);
-        assert(s && (s[0] == 'a' || s[0] == 'b' || s[0] == 'c'));
-        count++;
-    }
-    assert(count == 3);
-
-    /* Exercise updates */
-    dup2 = PySet_New(NULL);
-    assert(_PySet_Update(dup2, dup) == 0);
-    assert(PySet_Size(dup2) == 3);
-    assert(_PySet_Update(dup2, dup) == 0);
-    assert(PySet_Size(dup2) == 3);
-    Py_DECREF(dup2);
-
-    /* Raise SystemError when self argument is not a set or frozenset. */
-    t = PyTuple_New(0);
-    assertRaises(PySet_Size(t) == -1, PyExc_SystemError);
-    assertRaises(PySet_Contains(t, elem) == -1, PyExc_SystemError);
-    Py_DECREF(t);
-
-    /* Raise SystemError when self argument is not a set. */
-    f = PyFrozenSet_New(dup);
-    assert(PySet_Size(f) == 3);
-    assert(PyFrozenSet_CheckExact(f));
-    assertRaises(PySet_Discard(f, elem) == -1, PyExc_SystemError);
-    assertRaises(PySet_Pop(f) == NULL, PyExc_SystemError);
-    Py_DECREF(f);
-
-    /* Raise KeyError when popping from an empty set */
-    assert(PyNumber_InPlaceSubtract(ob, ob) == ob);
-    Py_DECREF(ob);
-    assert(PySet_GET_SIZE(ob) == 0);
-    assertRaises(PySet_Pop(ob) == NULL, PyExc_KeyError);
-
-    /* Restore the set from the copy using the PyNumber API */
-    assert(PyNumber_InPlaceOr(ob, dup) == ob);
-    Py_DECREF(ob);
-
-    /* Verify constructors accept NULL arguments */
-    f = PySet_New(NULL);
-    assert(f != NULL);
-    assert(PySet_GET_SIZE(f) == 0);
-    Py_DECREF(f);
-    f = PyFrozenSet_New(NULL);
-    assert(f != NULL);
-    assert(PyFrozenSet_CheckExact(f));
-    assert(PySet_GET_SIZE(f) == 0);
-    Py_DECREF(f);
-
-    Py_DECREF(elem);
-    Py_DECREF(dup);
-    Py_RETURN_TRUE;
-}
-
-#undef assertRaises
-
-#endif
-
 /***** Dummy Struct  *************************************************/
 
 static PyObject *
@@ -2542,8 +2410,4 @@ static PyTypeObject _PySetDummy_Type = {
     Py_TPFLAGS_DEFAULT, /*tp_flags */
 };
 
-static PyObject _dummy_struct = {
-    _PyObject_EXTRA_INIT
-    { _Py_IMMORTAL_REFCNT },
-    &_PySetDummy_Type
-};
+static PyObject _dummy_struct = _PyObject_HEAD_INIT(&_PySetDummy_Type);
diff --git a/Objects/sliceobject.c b/Objects/sliceobject.c
index e6776ac92b669c..a3ed0c096d84ed 100644
--- a/Objects/sliceobject.c
+++ b/Objects/sliceobject.c
@@ -16,8 +16,9 @@ this type and there is exactly one in existence.
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
 #include "pycore_long.h"          // _PyLong_GetZero()
+#include "pycore_modsupport.h"    // _PyArg_NoKeywords()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
-#include "structmember.h"         // PyMemberDef
+
 
 static PyObject *
 ellipsis_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
@@ -26,7 +27,7 @@ ellipsis_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         PyErr_SetString(PyExc_TypeError, "EllipsisType takes no arguments");
         return NULL;
     }
-    return Py_NewRef(Py_Ellipsis);
+    return Py_Ellipsis;
 }
 
 static void
@@ -97,11 +98,7 @@ PyTypeObject PyEllipsis_Type = {
     ellipsis_new,                       /* tp_new */
 };
 
-PyObject _Py_EllipsisObject = {
-    _PyObject_EXTRA_INIT
-    { _Py_IMMORTAL_REFCNT },
-    &PyEllipsis_Type
-};
+PyObject _Py_EllipsisObject = _PyObject_HEAD_INIT(&PyEllipsis_Type);
 
 
 /* Slice object implementation */
@@ -377,9 +374,9 @@ slice_repr(PySliceObject *r)
 }
 
 static PyMemberDef slice_members[] = {
-    {"start", T_OBJECT, offsetof(PySliceObject, start), READONLY},
-    {"stop", T_OBJECT, offsetof(PySliceObject, stop), READONLY},
-    {"step", T_OBJECT, offsetof(PySliceObject, step), READONLY},
+    {"start", _Py_T_OBJECT, offsetof(PySliceObject, start), Py_READONLY},
+    {"stop", _Py_T_OBJECT, offsetof(PySliceObject, stop), Py_READONLY},
+    {"step", _Py_T_OBJECT, offsetof(PySliceObject, step), Py_READONLY},
     {0}
 };
 
@@ -415,7 +412,7 @@ _PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
 
     /* Convert step to an integer; raise for zero step. */
     if (self->step == Py_None) {
-        step = Py_NewRef(_PyLong_GetOne());
+        step = _PyLong_GetOne();
         step_is_negative = 0;
     }
     else {
@@ -443,7 +440,7 @@ _PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
             goto error;
     }
     else {
-        lower = Py_NewRef(_PyLong_GetZero());
+        lower = _PyLong_GetZero();
         upper = Py_NewRef(length);
     }
 
diff --git a/Objects/stringlib/README.txt b/Objects/stringlib/README.txt
index e1e329290acbbe..26f3d02b0eff38 100644
--- a/Objects/stringlib/README.txt
+++ b/Objects/stringlib/README.txt
@@ -9,7 +9,7 @@ the following defines used by the different modules:
 
 STRINGLIB_CHAR
 
-    the type used to hold a character (char or Py_UNICODE)
+    the type used to hold a character (char, Py_UCS1, Py_UCS2 or Py_UCS4)
 
 STRINGLIB_GET_EMPTY()
 
diff --git a/Objects/stringlib/clinic/transmogrify.h.h b/Objects/stringlib/clinic/transmogrify.h.h
index 49388cf043ced2..3a985ab5c7a9f5 100644
--- a/Objects/stringlib/clinic/transmogrify.h.h
+++ b/Objects/stringlib/clinic/transmogrify.h.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(stringlib_expandtabs__doc__,
 "expandtabs($self, /, tabsize=8)\n"
@@ -62,7 +63,7 @@ stringlib_expandtabs(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    tabsize = _PyLong_AsInt(args[0]);
+    tabsize = PyLong_AsInt(args[0]);
     if (tabsize == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -278,4 +279,4 @@ stringlib_zfill(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=d44a269805f6739e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b409bdf9ab68d5a6 input=a9049054013a1b77]*/
diff --git a/Objects/stringlib/codecs.h b/Objects/stringlib/codecs.h
index 958cc86147815d..f98e71c3fc6ecf 100644
--- a/Objects/stringlib/codecs.h
+++ b/Objects/stringlib/codecs.h
@@ -408,9 +408,6 @@ STRINGLIB(utf8_encoder)(_PyBytesWriter *writer,
                 }
                 else {
                     /* rep is unicode */
-                    if (PyUnicode_READY(rep) < 0)
-                        goto error;
-
                     if (!PyUnicode_IS_ASCII(rep)) {
                         raise_encode_exception(&exc, "utf-8", unicode,
                                                startpos, endpos,
diff --git a/Objects/stringlib/unicode_format.h b/Objects/stringlib/unicode_format.h
index ccd7c77c0a03fd..91c71ab5736c25 100644
--- a/Objects/stringlib/unicode_format.h
+++ b/Objects/stringlib/unicode_format.h
@@ -2,6 +2,7 @@
     unicode_format.h -- implementation of str.format().
 */
 
+#include "pycore_complexobject.h" // _PyComplex_FormatAdvancedWriter()
 #include "pycore_floatobject.h"   // _PyFloat_FormatAdvancedWriter()
 
 /************************************************************************/
@@ -820,7 +821,7 @@ output_markup(SubString *field_name, SubString *format_spec,
 
     if (conversion != '\0') {
         tmp = do_conversion(fieldobj, conversion);
-        if (tmp == NULL || PyUnicode_READY(tmp) == -1)
+        if (tmp == NULL)
             goto done;
 
         /* do the assignment, transferring ownership: fieldobj = tmp */
@@ -832,7 +833,7 @@ output_markup(SubString *field_name, SubString *format_spec,
     if (format_spec_needs_expanding) {
         tmp = build_string(format_spec, args, kwargs, recursion_depth-1,
                            auto_number);
-        if (tmp == NULL || PyUnicode_READY(tmp) == -1)
+        if (tmp == NULL)
             goto done;
 
         /* note that in the case we're expanding the format string,
@@ -948,10 +949,6 @@ do_string_format(PyObject *self, PyObject *args, PyObject *kwargs)
     int recursion_depth = 2;
 
     AutoNumber auto_number;
-
-    if (PyUnicode_READY(self) == -1)
-        return NULL;
-
     AutoNumber_Init(&auto_number);
     SubString_init(&input, self, 0, PyUnicode_GET_LENGTH(self));
     return build_string(&input, args, kwargs, recursion_depth, &auto_number);
@@ -1110,9 +1107,6 @@ formatter_parser(PyObject *ignored, PyObject *self)
         return NULL;
     }
 
-    if (PyUnicode_READY(self) == -1)
-        return NULL;
-
     it = PyObject_New(formatteriterobject, &PyFormatterIter_Type);
     if (it == NULL)
         return NULL;
@@ -1252,9 +1246,6 @@ formatter_field_name_split(PyObject *ignored, PyObject *self)
         return NULL;
     }
 
-    if (PyUnicode_READY(self) == -1)
-        return NULL;
-
     it = PyObject_New(fieldnameiterobject, &PyFieldNameIter_Type);
     if (it == NULL)
         return NULL;
diff --git a/Objects/structseq.c b/Objects/structseq.c
index 8b1895957101a4..581d6ad240885a 100644
--- a/Objects/structseq.c
+++ b/Objects/structseq.c
@@ -8,11 +8,11 @@
 */
 
 #include "Python.h"
-#include "pycore_tuple.h"         // _PyTuple_FromArray()
+#include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_modsupport.h"    // _PyArg_NoPositional()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
-#include "structmember.h"         // PyMemberDef
 #include "pycore_structseq.h"     // PyStructSequence_InitType()
-#include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_tuple.h"         // _PyTuple_FromArray()
 
 static const char visible_length_key[] = "n_sequence_fields";
 static const char real_length_key[] = "n_fields";
@@ -74,15 +74,28 @@ PyStructSequence_New(PyTypeObject *type)
 }
 
 void
-PyStructSequence_SetItem(PyObject* op, Py_ssize_t i, PyObject* v)
+PyStructSequence_SetItem(PyObject *op, Py_ssize_t index, PyObject *value)
 {
-    PyStructSequence_SET_ITEM(op, i, v);
+    PyTupleObject *tuple = _PyTuple_CAST(op);
+    assert(0 <= index);
+#ifndef NDEBUG
+    Py_ssize_t n_fields = REAL_SIZE(op);
+    assert(n_fields >= 0);
+    assert(index < n_fields);
+#endif
+    tuple->ob_item[index] = value;
 }
 
 PyObject*
-PyStructSequence_GetItem(PyObject* op, Py_ssize_t i)
+PyStructSequence_GetItem(PyObject *op, Py_ssize_t index)
 {
-    return PyStructSequence_GET_ITEM(op, i);
+    assert(0 <= index);
+#ifndef NDEBUG
+    Py_ssize_t n_fields = REAL_SIZE(op);
+    assert(n_fields >= 0);
+    assert(index < n_fields);
+#endif
+    return PyTuple_GET_ITEM(op, index);
 }
 
 
@@ -135,7 +148,6 @@ static PyObject *
 structseq_new_impl(PyTypeObject *type, PyObject *arg, PyObject *dict)
 /*[clinic end generated code: output=baa082e788b171da input=90532511101aa3fb]*/
 {
-    PyObject *ob;
     PyStructSequence *res = NULL;
     Py_ssize_t len, min_len, max_len, i, n_unnamed_fields;
 
@@ -204,22 +216,34 @@ structseq_new_impl(PyTypeObject *type, PyObject *arg, PyObject *dict)
         res->ob_item[i] = Py_NewRef(v);
     }
     Py_DECREF(arg);
-    for (; i < max_len; ++i) {
-        if (dict == NULL) {
-            ob = Py_None;
-        }
-        else {
-            ob = _PyDict_GetItemStringWithError(dict,
-                type->tp_members[i-n_unnamed_fields].name);
+    if (dict != NULL && PyDict_GET_SIZE(dict) > 0) {
+        Py_ssize_t n_found_keys = 0;
+        for (i = len; i < max_len; ++i) {
+            PyObject *ob = NULL;
+            const char *name = type->tp_members[i - n_unnamed_fields].name;
+            if (PyDict_GetItemStringRef(dict, name, &ob) < 0) {
+                Py_DECREF(res);
+                return NULL;
+            }
             if (ob == NULL) {
-                if (PyErr_Occurred()) {
-                    Py_DECREF(res);
-                    return NULL;
-                }
-                ob = Py_None;
+                ob = Py_NewRef(Py_None);
+            }
+            else {
+                ++n_found_keys;
             }
+            res->ob_item[i] = ob;
+        }
+        if (PyDict_GET_SIZE(dict) > n_found_keys) {
+            PyErr_Format(PyExc_TypeError,
+                         "%.500s() got duplicate or unexpected field name(s)",
+                         type->tp_name);
+            Py_DECREF(res);
+            return NULL;
+        }
+    } else {
+        for (i = len; i < max_len; ++i) {
+            res->ob_item[i] = Py_NewRef(Py_None);
         }
-        res->ob_item[i] = Py_NewRef(ob);
     }
 
     _PyObject_GC_TRACK(res);
@@ -287,7 +311,7 @@ structseq_repr(PyStructSequence *obj)
             goto error;
         }
 
-        PyObject *value = PyStructSequence_GET_ITEM(obj, i);
+        PyObject *value = PyStructSequence_GetItem((PyObject*)obj, i);
         assert(value != NULL);
         PyObject *repr = PyObject_Repr(value);
         if (repr == NULL) {
@@ -356,9 +380,81 @@ structseq_reduce(PyStructSequence* self, PyObject *Py_UNUSED(ignored))
     return NULL;
 }
 
+
+static PyObject *
+structseq_replace(PyStructSequence *self, PyObject *args, PyObject *kwargs)
+{
+    PyStructSequence *result = NULL;
+    Py_ssize_t n_fields, n_unnamed_fields, i;
+
+    if (!_PyArg_NoPositional("__replace__", args)) {
+        return NULL;
+    }
+
+    n_fields = REAL_SIZE(self);
+    if (n_fields < 0) {
+        return NULL;
+    }
+    n_unnamed_fields = UNNAMED_FIELDS(self);
+    if (n_unnamed_fields < 0) {
+        return NULL;
+    }
+    if (n_unnamed_fields > 0) {
+        PyErr_Format(PyExc_TypeError,
+                     "__replace__() is not supported for %.500s "
+                     "because it has unnamed field(s)",
+                     Py_TYPE(self)->tp_name);
+        return NULL;
+    }
+
+    result = (PyStructSequence *) PyStructSequence_New(Py_TYPE(self));
+    if (!result) {
+        return NULL;
+    }
+
+    if (kwargs != NULL) {
+        // We do not support types with unnamed fields, so we can iterate over
+        // i >= n_visible_fields case without slicing with (i - n_unnamed_fields).
+        for (i = 0; i < n_fields; ++i) {
+            PyObject *ob;
+            if (PyDict_PopString(kwargs, Py_TYPE(self)->tp_members[i].name,
+                                 &ob) < 0) {
+                goto error;
+            }
+            if (ob == NULL) {
+                ob = Py_NewRef(self->ob_item[i]);
+            }
+            result->ob_item[i] = ob;
+        }
+        // Check if there are any unexpected fields.
+        if (PyDict_GET_SIZE(kwargs) > 0) {
+            PyObject *names = PyDict_Keys(kwargs);
+            if (names) {
+                PyErr_Format(PyExc_TypeError, "Got unexpected field name(s): %R", names);
+                Py_DECREF(names);
+            }
+            goto error;
+        }
+    }
+    else
+    {
+        // Just create a copy of the original.
+        for (i = 0; i < n_fields; ++i) {
+            result->ob_item[i] = Py_NewRef(self->ob_item[i]);
+        }
+    }
+
+    return (PyObject *)result;
+
+error:
+    Py_DECREF(result);
+    return NULL;
+}
+
 static PyMethodDef structseq_methods[] = {
     {"__reduce__", (PyCFunction)structseq_reduce, METH_NOARGS, NULL},
-    {NULL, NULL}
+    {"__replace__", _PyCFunction_CAST(structseq_replace), METH_VARARGS | METH_KEYWORDS, NULL},
+    {NULL, NULL}  // sentinel
 };
 
 static Py_ssize_t
@@ -452,10 +548,10 @@ initialize_members(PyStructSequence_Desc *desc,
         /* The names and docstrings in these MemberDefs are statically */
         /* allocated so it is expected that they'll outlive the MemberDef */
         members[k].name = desc->fields[i].name;
-        members[k].type = T_OBJECT;
+        members[k].type = _Py_T_OBJECT;
         members[k].offset = offsetof(PyStructSequence, ob_item)
           + i * sizeof(PyObject*);
-        members[k].flags = READONLY;
+        members[k].flags = Py_READONLY;
         members[k].doc = desc->fields[i].doc;
         k++;
     }
@@ -564,9 +660,10 @@ PyStructSequence_InitType2(PyTypeObject *type, PyStructSequence_Desc *desc)
     Py_ssize_t n_members, n_unnamed_members;
 
 #ifdef Py_TRACE_REFS
-    /* if the type object was chained, unchain it first
+    /* if the type object was traced, remove it first
        before overwriting its storage */
-    if (type->ob_base.ob_base._ob_next) {
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (_PyRefchain_IsTraced(interp, (PyObject *)type)) {
         _Py_ForgetReference((PyObject *)type);
     }
 #endif
diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index 991edcc86677de..d567839c5e3a0b 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -3,9 +3,11 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_gc.h"            // _PyObject_GC_IS_TRACKED()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
-#include "pycore_object.h"        // _PyObject_GC_TRACK(), _Py_FatalRefcountError()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
+#include "pycore_object.h"        // _PyObject_GC_TRACK(), _Py_FatalRefcountError(), _PyDebugAllocatorStats()
 
 /*[clinic input]
 class tuple "PyTupleObject *" "&PyTuple_Type"
@@ -61,7 +63,7 @@ tuple_alloc(Py_ssize_t size)
 static inline PyObject *
 tuple_get_empty(void)
 {
-    return Py_NewRef(&_Py_SINGLETON(tuple_empty));
+    return (PyObject *)&_Py_SINGLETON(tuple_empty);
 }
 
 PyObject *
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index c1525320a7cbd5..08f5f47d586729 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1,24 +1,24 @@
 /* Type object implementation */
 
 #include "Python.h"
-#include "pycore_call.h"
+#include "pycore_abstract.h"      // _PySequence_IterSearch()
+#include "pycore_call.h"          // _PyObject_VectorcallTstate()
 #include "pycore_code.h"          // CO_FAST_FREE
-#include "pycore_symtable.h"      // _Py_Mangle()
 #include "pycore_dict.h"          // _PyDict_KeysSize()
-#include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_frame.h"         // _PyInterpreterFrame
+#include "pycore_long.h"          // _PyLong_IsNegative()
 #include "pycore_memoryobject.h"  // _PyMemoryView_FromBufferProc()
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_moduleobject.h"  // _PyModule_GetDef()
 #include "pycore_object.h"        // _PyType_HasFeature()
-#include "pycore_long.h"          // _PyLong_IsNegative()
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_symtable.h"      // _Py_Mangle()
 #include "pycore_typeobject.h"    // struct type_cache
 #include "pycore_unionobject.h"   // _Py_union_type_or
-#include "pycore_frame.h"         // _PyInterpreterFrame
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
 #include "opcode.h"               // MAKE_CELL
-#include "structmember.h"         // PyMemberDef
 
-#include <ctype.h>
 #include <stddef.h>               // ptrdiff_t
 
 /*[clinic input]
@@ -75,13 +75,10 @@ slot_tp_setattro(PyObject *self, PyObject *name, PyObject *value);
 static inline PyTypeObject *
 type_from_ref(PyObject *ref)
 {
-    assert(PyWeakref_CheckRef(ref));
-    PyObject *obj = PyWeakref_GET_OBJECT(ref);  // borrowed ref
-    assert(obj != NULL);
-    if (obj == Py_None) {
+    PyObject *obj = _PyWeakref_GET_REF(ref);
+    if (obj == NULL) {
         return NULL;
     }
-    assert(PyType_Check(obj));
     return _PyType_CAST(obj);
 }
 
@@ -238,6 +235,13 @@ _PyType_GetDict(PyTypeObject *self)
     return lookup_tp_dict(self);
 }
 
+PyObject *
+PyType_GetDict(PyTypeObject *self)
+{
+    PyObject *dict = lookup_tp_dict(self);
+    return _Py_XNewRef(dict);
+}
+
 static inline void
 set_tp_dict(PyTypeObject *self, PyObject *dict)
 {
@@ -268,12 +272,6 @@ clear_tp_dict(PyTypeObject *self)
 static inline PyObject *
 lookup_tp_bases(PyTypeObject *self)
 {
-    if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
-        assert(state != NULL);
-        return state->tp_bases;
-    }
     return self->tp_bases;
 }
 
@@ -287,12 +285,22 @@ _PyType_GetBases(PyTypeObject *self)
 static inline void
 set_tp_bases(PyTypeObject *self, PyObject *bases)
 {
+    assert(PyTuple_CheckExact(bases));
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
-        assert(state != NULL);
-        state->tp_bases = bases;
-        return;
+        // XXX tp_bases can probably be statically allocated for each
+        // static builtin type.
+        assert(_Py_IsMainInterpreter(_PyInterpreterState_GET()));
+        assert(self->tp_bases == NULL);
+        if (PyTuple_GET_SIZE(bases) == 0) {
+            assert(self->tp_base == NULL);
+        }
+        else {
+            assert(PyTuple_GET_SIZE(bases) == 1);
+            assert(PyTuple_GET_ITEM(bases, 0) == (PyObject *)self->tp_base);
+            assert(self->tp_base->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN);
+            assert(_Py_IsImmortal(self->tp_base));
+        }
+        _Py_SetImmortal(bases);
     }
     self->tp_bases = bases;
 }
@@ -301,10 +309,17 @@ static inline void
 clear_tp_bases(PyTypeObject *self)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
-        assert(state != NULL);
-        Py_CLEAR(state->tp_bases);
+        if (_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+            if (self->tp_bases != NULL) {
+                if (PyTuple_GET_SIZE(self->tp_bases) == 0) {
+                    Py_CLEAR(self->tp_bases);
+                }
+                else {
+                    assert(_Py_IsImmortal(self->tp_bases));
+                    _Py_ClearImmortal(self->tp_bases);
+                }
+            }
+        }
         return;
     }
     Py_CLEAR(self->tp_bases);
@@ -314,12 +329,6 @@ clear_tp_bases(PyTypeObject *self)
 static inline PyObject *
 lookup_tp_mro(PyTypeObject *self)
 {
-    if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
-        assert(state != NULL);
-        return state->tp_mro;
-    }
     return self->tp_mro;
 }
 
@@ -333,12 +342,14 @@ _PyType_GetMRO(PyTypeObject *self)
 static inline void
 set_tp_mro(PyTypeObject *self, PyObject *mro)
 {
+    assert(PyTuple_CheckExact(mro));
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
-        assert(state != NULL);
-        state->tp_mro = mro;
-        return;
+        // XXX tp_mro can probably be statically allocated for each
+        // static builtin type.
+        assert(_Py_IsMainInterpreter(_PyInterpreterState_GET()));
+        assert(self->tp_mro == NULL);
+        /* Other checks are done via set_tp_bases. */
+        _Py_SetImmortal(mro);
     }
     self->tp_mro = mro;
 }
@@ -347,10 +358,17 @@ static inline void
 clear_tp_mro(PyTypeObject *self)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
-        assert(state != NULL);
-        Py_CLEAR(state->tp_mro);
+        if (_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+            if (self->tp_mro != NULL) {
+                if (PyTuple_GET_SIZE(self->tp_mro) == 0) {
+                    Py_CLEAR(self->tp_mro);
+                }
+                else {
+                    assert(_Py_IsImmortal(self->tp_mro));
+                    _Py_ClearImmortal(self->tp_mro);
+                }
+            }
+        }
         return;
     }
     Py_CLEAR(self->tp_mro);
@@ -436,15 +454,17 @@ _PyType_GetSubclasses(PyTypeObject *self)
     Py_ssize_t i = 0;
     PyObject *ref;  // borrowed ref
     while (PyDict_Next(subclasses, &i, NULL, &ref)) {
-        PyTypeObject *subclass = type_from_ref(ref);  // borrowed
+        PyTypeObject *subclass = type_from_ref(ref);
         if (subclass == NULL) {
             continue;
         }
 
         if (PyList_Append(list, _PyObject_CAST(subclass)) < 0) {
             Py_DECREF(list);
+            Py_DECREF(subclass);
             return NULL;
         }
+        Py_DECREF(subclass);
     }
     return list;
 }
@@ -564,8 +584,29 @@ _PyType_GetDocFromInternalDoc(const char *name, const char *internal_doc)
     return PyUnicode_FromString(doc);
 }
 
+static const char *
+signature_from_flags(int flags)
+{
+    switch (flags & ~METH_COEXIST) {
+        case METH_NOARGS:
+            return "($self, /)";
+        case METH_NOARGS|METH_CLASS:
+            return "($type, /)";
+        case METH_NOARGS|METH_STATIC:
+            return "()";
+        case METH_O:
+            return "($self, object, /)";
+        case METH_O|METH_CLASS:
+            return "($type, object, /)";
+        case METH_O|METH_STATIC:
+            return "(object, /)";
+        default:
+            return NULL;
+    }
+}
+
 PyObject *
-_PyType_GetTextSignatureFromInternalDoc(const char *name, const char *internal_doc)
+_PyType_GetTextSignatureFromInternalDoc(const char *name, const char *internal_doc, int flags)
 {
     const char *start = find_signature(name, internal_doc);
     const char *end;
@@ -575,6 +616,10 @@ _PyType_GetTextSignatureFromInternalDoc(const char *name, const char *internal_d
     else
         end = NULL;
     if (!end) {
+        start = signature_from_flags(flags);
+        if (start) {
+            return PyUnicode_FromString(start);
+        }
         Py_RETURN_NONE;
     }
 
@@ -764,11 +809,12 @@ PyType_Modified(PyTypeObject *type)
         Py_ssize_t i = 0;
         PyObject *ref;
         while (PyDict_Next(subclasses, &i, NULL, &ref)) {
-            PyTypeObject *subclass = type_from_ref(ref);  // borrowed
+            PyTypeObject *subclass = type_from_ref(ref);
             if (subclass == NULL) {
                 continue;
             }
             PyType_Modified(subclass);
+            Py_DECREF(subclass);
         }
     }
 
@@ -782,7 +828,9 @@ PyType_Modified(PyTypeObject *type)
             if (bits & 1) {
                 PyType_WatchCallback cb = interp->type_watchers[i];
                 if (cb && (cb(type) < 0)) {
-                    PyErr_WriteUnraisable((PyObject *)type);
+                    PyErr_FormatUnraisable(
+                        "Exception ignored in type watcher callback #%d for %R",
+                        i, type);
                 }
             }
             i++;
@@ -912,16 +960,16 @@ int PyUnstable_Type_AssignVersionTag(PyTypeObject *type)
 
 
 static PyMemberDef type_members[] = {
-    {"__basicsize__", T_PYSSIZET, offsetof(PyTypeObject,tp_basicsize),READONLY},
-    {"__itemsize__", T_PYSSIZET, offsetof(PyTypeObject, tp_itemsize), READONLY},
-    {"__flags__", T_ULONG, offsetof(PyTypeObject, tp_flags), READONLY},
+    {"__basicsize__", Py_T_PYSSIZET, offsetof(PyTypeObject,tp_basicsize),Py_READONLY},
+    {"__itemsize__", Py_T_PYSSIZET, offsetof(PyTypeObject, tp_itemsize), Py_READONLY},
+    {"__flags__", Py_T_ULONG, offsetof(PyTypeObject, tp_flags), Py_READONLY},
     /* Note that this value is misleading for static builtin types,
        since the memory at this offset will always be NULL. */
-    {"__weakrefoffset__", T_PYSSIZET,
-     offsetof(PyTypeObject, tp_weaklistoffset), READONLY},
-    {"__base__", T_OBJECT, offsetof(PyTypeObject, tp_base), READONLY},
-    {"__dictoffset__", T_PYSSIZET,
-     offsetof(PyTypeObject, tp_dictoffset), READONLY},
+    {"__weakrefoffset__", Py_T_PYSSIZET,
+     offsetof(PyTypeObject, tp_weaklistoffset), Py_READONLY},
+    {"__base__", _Py_T_OBJECT, offsetof(PyTypeObject, tp_base), Py_READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET,
+     offsetof(PyTypeObject, tp_dictoffset), Py_READONLY},
     {0}
 };
 
@@ -1044,14 +1092,9 @@ type_module(PyTypeObject *type, void *context)
 
     if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) {
         PyObject *dict = lookup_tp_dict(type);
-        mod = PyDict_GetItemWithError(dict, &_Py_ID(__module__));
-        if (mod == NULL) {
-            if (!PyErr_Occurred()) {
-                PyErr_Format(PyExc_AttributeError, "__module__");
-            }
-            return NULL;
+        if (PyDict_GetItemRef(dict, &_Py_ID(__module__), &mod) == 0) {
+            PyErr_Format(PyExc_AttributeError, "__module__");
         }
-        Py_INCREF(mod);
     }
     else {
         const char *s = strrchr(type->tp_name, '.');
@@ -1062,7 +1105,7 @@ type_module(PyTypeObject *type, void *context)
                 PyUnicode_InternInPlace(&mod);
         }
         else {
-            mod = Py_NewRef(&_Py_ID(builtins));
+            mod = &_Py_ID(builtins);
         }
     }
     return mod;
@@ -1086,17 +1129,16 @@ type_abstractmethods(PyTypeObject *type, void *context)
     PyObject *mod = NULL;
     /* type itself has an __abstractmethods__ descriptor (this). Don't return
        that. */
-    if (type != &PyType_Type) {
-        PyObject *dict = lookup_tp_dict(type);
-        mod = PyDict_GetItemWithError(dict, &_Py_ID(__abstractmethods__));
+    if (type == &PyType_Type) {
+        PyErr_SetObject(PyExc_AttributeError, &_Py_ID(__abstractmethods__));
     }
-    if (!mod) {
-        if (!PyErr_Occurred()) {
+    else {
+        PyObject *dict = lookup_tp_dict(type);
+        if (PyDict_GetItemRef(dict, &_Py_ID(__abstractmethods__), &mod) == 0) {
             PyErr_SetObject(PyExc_AttributeError, &_Py_ID(__abstractmethods__));
         }
-        return NULL;
     }
-    return Py_NewRef(mod);
+    return mod;
 }
 
 static int
@@ -1387,18 +1429,14 @@ type_get_doc(PyTypeObject *type, void *context)
         return _PyType_GetDocFromInternalDoc(type->tp_name, type->tp_doc);
     }
     PyObject *dict = lookup_tp_dict(type);
-    result = PyDict_GetItemWithError(dict, &_Py_ID(__doc__));
-    if (result == NULL) {
-        if (!PyErr_Occurred()) {
-            result = Py_NewRef(Py_None);
-        }
-    }
-    else if (Py_TYPE(result)->tp_descr_get) {
-        result = Py_TYPE(result)->tp_descr_get(result, NULL,
-                                               (PyObject *)type);
+    if (PyDict_GetItemRef(dict, &_Py_ID(__doc__), &result) == 0) {
+        result = Py_NewRef(Py_None);
     }
-    else {
-        Py_INCREF(result);
+    else if (result) {
+        descrgetfunc descr_get = Py_TYPE(result)->tp_descr_get;
+        if (descr_get) {
+            Py_SETREF(result, descr_get(result, NULL, (PyObject *)type));
+        }
     }
     return result;
 }
@@ -1406,7 +1444,7 @@ type_get_doc(PyTypeObject *type, void *context)
 static PyObject *
 type_get_text_signature(PyTypeObject *type, void *context)
 {
-    return _PyType_GetTextSignatureFromInternalDoc(type->tp_name, type->tp_doc);
+    return _PyType_GetTextSignatureFromInternalDoc(type->tp_name, type->tp_doc, 0);
 }
 
 static int
@@ -1428,24 +1466,17 @@ type_get_annotations(PyTypeObject *type, void *context)
     }
 
     PyObject *annotations;
-    /* there's no _PyDict_GetItemId without WithError, so let's LBYL. */
     PyObject *dict = lookup_tp_dict(type);
-    if (PyDict_Contains(dict, &_Py_ID(__annotations__))) {
-        annotations = PyDict_GetItemWithError(dict, &_Py_ID(__annotations__));
-        /*
-        ** PyDict_GetItemWithError could still fail,
-        ** for instance with a well-timed Ctrl-C or a MemoryError.
-        ** so let's be totally safe.
-        */
-        if (annotations) {
-            if (Py_TYPE(annotations)->tp_descr_get) {
-                annotations = Py_TYPE(annotations)->tp_descr_get(
-                        annotations, NULL, (PyObject *)type);
-            } else {
-                Py_INCREF(annotations);
-            }
+    if (PyDict_GetItemRef(dict, &_Py_ID(__annotations__), &annotations) < 0) {
+        return NULL;
+    }
+    if (annotations) {
+        descrgetfunc get = Py_TYPE(annotations)->tp_descr_get;
+        if (get) {
+            Py_SETREF(annotations, get(annotations, NULL, (PyObject *)type));
         }
-    } else {
+    }
+    else {
         annotations = PyDict_New();
         if (annotations) {
             int result = PyDict_SetItem(
@@ -1477,11 +1508,10 @@ type_set_annotations(PyTypeObject *type, PyObject *value, void *context)
         result = PyDict_SetItem(dict, &_Py_ID(__annotations__), value);
     } else {
         /* delete */
-        if (!PyDict_Contains(dict, &_Py_ID(__annotations__))) {
-            PyErr_Format(PyExc_AttributeError, "__annotations__");
-            return -1;
-        }
         result = PyDict_DelItem(dict, &_Py_ID(__annotations__));
+        if (result < 0 && PyErr_ExceptionMatches(PyExc_KeyError)) {
+            PyErr_SetString(PyExc_AttributeError, "__annotations__");
+        }
     }
 
     if (result == 0) {
@@ -1490,6 +1520,32 @@ type_set_annotations(PyTypeObject *type, PyObject *value, void *context)
     return result;
 }
 
+static PyObject *
+type_get_type_params(PyTypeObject *type, void *context)
+{
+    PyObject *params;
+    if (PyDict_GetItemRef(lookup_tp_dict(type), &_Py_ID(__type_params__), &params) == 0) {
+        return PyTuple_New(0);
+    }
+    return params;
+}
+
+static int
+type_set_type_params(PyTypeObject *type, PyObject *value, void *context)
+{
+    if (!check_set_special_type_attr(type, value, "__type_params__")) {
+        return -1;
+    }
+
+    PyObject *dict = lookup_tp_dict(type);
+    int result = PyDict_SetItem(dict, &_Py_ID(__type_params__), value);
+
+    if (result == 0) {
+        PyType_Modified(type);
+    }
+    return result;
+}
+
 
 /*[clinic input]
 type.__instancecheck__ -> bool
@@ -1536,6 +1592,7 @@ static PyGetSetDef type_getsets[] = {
     {"__doc__", (getter)type_get_doc, (setter)type_set_doc, NULL},
     {"__text_signature__", (getter)type_get_text_signature, NULL, NULL},
     {"__annotations__", (getter)type_get_annotations, (setter)type_set_annotations, NULL},
+    {"__type_params__", (getter)type_get_type_params, (setter)type_set_type_params, NULL},
     {0}
 };
 
@@ -1637,6 +1694,26 @@ type_call(PyTypeObject *type, PyObject *args, PyObject *kwds)
     return obj;
 }
 
+PyObject *
+_PyType_NewManagedObject(PyTypeObject *type)
+{
+    assert(type->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+    assert(_PyType_IS_GC(type));
+    assert(type->tp_new == PyBaseObject_Type.tp_new);
+    assert(type->tp_alloc == PyType_GenericAlloc);
+    assert(type->tp_itemsize == 0);
+    PyObject *obj = PyType_GenericAlloc(type, 0);
+    if (obj == NULL) {
+        return PyErr_NoMemory();
+    }
+    _PyObject_DictOrValuesPointer(obj)->dict = NULL;
+    if (_PyObject_InitInlineValues(obj, type)) {
+        Py_DECREF(obj);
+        return NULL;
+    }
+    return obj;
+}
+
 PyObject *
 _PyType_AllocNoTrack(PyTypeObject *type, Py_ssize_t nitems)
 {
@@ -1708,7 +1785,7 @@ traverse_slots(PyTypeObject *type, PyObject *self, visitproc visit, void *arg)
     n = Py_SIZE(type);
     mp = _PyHeapType_GET_MEMBERS((PyHeapTypeObject *)type);
     for (i = 0; i < n; i++, mp++) {
-        if (mp->type == T_OBJECT_EX) {
+        if (mp->type == Py_T_OBJECT_EX) {
             char *addr = (char *)self + mp->offset;
             PyObject *obj = *(PyObject **)addr;
             if (obj != NULL) {
@@ -1745,7 +1822,7 @@ subtype_traverse(PyObject *self, visitproc visit, void *arg)
         assert(base->tp_dictoffset == 0);
         if (type->tp_flags & Py_TPFLAGS_MANAGED_DICT) {
             assert(type->tp_dictoffset == -1);
-            int err = _PyObject_VisitManagedDict(self, visit, arg);
+            int err = PyObject_VisitManagedDict(self, visit, arg);
             if (err) {
                 return err;
             }
@@ -1783,7 +1860,7 @@ clear_slots(PyTypeObject *type, PyObject *self)
     n = Py_SIZE(type);
     mp = _PyHeapType_GET_MEMBERS((PyHeapTypeObject *)type);
     for (i = 0; i < n; i++, mp++) {
-        if (mp->type == T_OBJECT_EX && !(mp->flags & READONLY)) {
+        if (mp->type == Py_T_OBJECT_EX && !(mp->flags & Py_READONLY)) {
             char *addr = (char *)self + mp->offset;
             PyObject *obj = *(PyObject **)addr;
             if (obj != NULL) {
@@ -1815,7 +1892,7 @@ subtype_clear(PyObject *self)
        __dict__ slots (as in the case 'self.__dict__ is self'). */
     if (type->tp_flags & Py_TPFLAGS_MANAGED_DICT) {
         if ((base->tp_flags & Py_TPFLAGS_MANAGED_DICT) == 0) {
-            _PyObject_ClearManagedDict(self);
+            PyObject_ClearManagedDict(self);
         }
     }
     else if (type->tp_dictoffset != base->tp_dictoffset) {
@@ -2284,7 +2361,7 @@ static PyObject *
 class_name(PyObject *cls)
 {
     PyObject *name;
-    if (_PyObject_LookupAttr(cls, &_Py_ID(__name__), &name) == 0) {
+    if (PyObject_GetOptionalAttr(cls, &_Py_ID(__name__), &name) == 0) {
         name = PyObject_Repr(cls);
     }
     return name;
@@ -2352,7 +2429,7 @@ set_mro_error(PyObject **to_merge, Py_ssize_t to_merge_size, int *remain)
     n = PyDict_GET_SIZE(set);
 
     off = PyOS_snprintf(buf, sizeof(buf), "Cannot create a \
-consistent method resolution\norder (MRO) for bases");
+consistent method resolution order (MRO) for bases");
     i = 0;
     while (PyDict_Next(set, &i, &k, &v) && (size_t)off < sizeof(buf)) {
         PyObject *name = class_name(k);
@@ -2929,21 +3006,21 @@ subtype_getweakref(PyObject *obj, void *context)
 
 static PyGetSetDef subtype_getsets_full[] = {
     {"__dict__", subtype_dict, subtype_setdict,
-     PyDoc_STR("dictionary for instance variables (if defined)")},
+     PyDoc_STR("dictionary for instance variables")},
     {"__weakref__", subtype_getweakref, NULL,
-     PyDoc_STR("list of weak references to the object (if defined)")},
+     PyDoc_STR("list of weak references to the object")},
     {0}
 };
 
 static PyGetSetDef subtype_getsets_dict_only[] = {
     {"__dict__", subtype_dict, subtype_setdict,
-     PyDoc_STR("dictionary for instance variables (if defined)")},
+     PyDoc_STR("dictionary for instance variables")},
     {0}
 };
 
 static PyGetSetDef subtype_getsets_weakref_only[] = {
     {"__weakref__", subtype_getweakref, NULL,
-     PyDoc_STR("list of weak references to the object (if defined)")},
+     PyDoc_STR("list of weak references to the object")},
     {0}
 };
 
@@ -3130,11 +3207,12 @@ type_new_copy_slots(type_new_ctx *ctx, PyObject *dict)
             goto error;
         }
         if (r > 0) {
-            /* CPython inserts __qualname__ and __classcell__ (when needed)
+            /* CPython inserts these names (when needed)
                into the namespace when creating a class.  They will be deleted
                below so won't act as class variables. */
             if (!_PyUnicode_Equal(slot, &_Py_ID(__qualname__)) &&
-                !_PyUnicode_Equal(slot, &_Py_ID(__classcell__)))
+                !_PyUnicode_Equal(slot, &_Py_ID(__classcell__)) &&
+                !_PyUnicode_Equal(slot, &_Py_ID(__classdictcell__)))
             {
                 PyErr_Format(PyExc_ValueError,
                              "%R in __slots__ conflicts with class variable",
@@ -3343,18 +3421,13 @@ type_new_set_module(PyTypeObject *type)
         return 0;
     }
 
-    PyObject *module = PyDict_GetItemWithError(globals, &_Py_ID(__name__));
-    if (module == NULL) {
-        if (PyErr_Occurred()) {
-            return -1;
-        }
-        return 0;
-    }
-
-    if (PyDict_SetItem(dict, &_Py_ID(__module__), module) < 0) {
-        return -1;
+    PyObject *module;
+    r = PyDict_GetItemRef(globals, &_Py_ID(__name__), &module);
+    if (module) {
+        r = PyDict_SetItem(dict, &_Py_ID(__module__), module);
+        Py_DECREF(module);
     }
-    return 0;
+    return r;
 }
 
 
@@ -3365,23 +3438,24 @@ type_new_set_ht_name(PyTypeObject *type)
 {
     PyHeapTypeObject *et = (PyHeapTypeObject *)type;
     PyObject *dict = lookup_tp_dict(type);
-    PyObject *qualname = PyDict_GetItemWithError(dict, &_Py_ID(__qualname__));
+    PyObject *qualname;
+    if (PyDict_GetItemRef(dict, &_Py_ID(__qualname__), &qualname) < 0) {
+        return -1;
+    }
     if (qualname != NULL) {
         if (!PyUnicode_Check(qualname)) {
             PyErr_Format(PyExc_TypeError,
                     "type __qualname__ must be a str, not %s",
                     Py_TYPE(qualname)->tp_name);
+            Py_DECREF(qualname);
             return -1;
         }
-        et->ht_qualname = Py_NewRef(qualname);
+        et->ht_qualname = qualname;
         if (PyDict_DelItem(dict, &_Py_ID(__qualname__)) < 0) {
             return -1;
         }
     }
     else {
-        if (PyErr_Occurred()) {
-            return -1;
-        }
         et->ht_qualname = Py_NewRef(et->ht_name);
     }
     return 0;
@@ -3499,7 +3573,7 @@ type_new_descriptors(const type_new_ctx *ctx, PyTypeObject *type)
             if (mp->name == NULL) {
                 return -1;
             }
-            mp->type = T_OBJECT_EX;
+            mp->type = Py_T_OBJECT_EX;
             mp->offset = slotoffset;
 
             /* __dict__ and __weakref__ are already filtered out */
@@ -3585,6 +3659,32 @@ type_new_set_classcell(PyTypeObject *type)
     return 0;
 }
 
+static int
+type_new_set_classdictcell(PyTypeObject *type)
+{
+    PyObject *dict = lookup_tp_dict(type);
+    PyObject *cell = PyDict_GetItemWithError(dict, &_Py_ID(__classdictcell__));
+    if (cell == NULL) {
+        if (PyErr_Occurred()) {
+            return -1;
+        }
+        return 0;
+    }
+
+    /* At least one method requires a reference to the dict of its defining class */
+    if (!PyCell_Check(cell)) {
+        PyErr_Format(PyExc_TypeError,
+                     "__classdictcell__ must be a nonlocal cell, not %.200R",
+                     Py_TYPE(cell));
+        return -1;
+    }
+
+    (void)PyCell_Set(cell, (PyObject *)dict);
+    if (PyDict_DelItem(dict, &_Py_ID(__classdictcell__)) < 0) {
+        return -1;
+    }
+    return 0;
+}
 
 static int
 type_new_set_attrs(const type_new_ctx *ctx, PyTypeObject *type)
@@ -3629,6 +3729,9 @@ type_new_set_attrs(const type_new_ctx *ctx, PyTypeObject *type)
     if (type_new_set_classcell(type) < 0) {
         return -1;
     }
+    if (type_new_set_classdictcell(type) < 0) {
+        return -1;
+    }
     return 0;
 }
 
@@ -3759,16 +3862,14 @@ type_new_get_bases(type_new_ctx *ctx, PyObject **type)
         if (PyType_Check(base)) {
             continue;
         }
-        PyObject *mro_entries;
-        if (_PyObject_LookupAttr(base, &_Py_ID(__mro_entries__),
-                                 &mro_entries) < 0) {
+        int rc = PyObject_HasAttrWithError(base, &_Py_ID(__mro_entries__));
+        if (rc < 0) {
             return -1;
         }
-        if (mro_entries != NULL) {
+        if (rc) {
             PyErr_SetString(PyExc_TypeError,
                             "type() doesn't support MRO entry resolution; "
                             "use types.new_class()");
-            Py_DECREF(mro_entries);
             return -1;
         }
     }
@@ -4019,20 +4120,20 @@ _PyType_FromMetaclass_impl(
                 nmembers++;
                 if (strcmp(memb->name, "__weaklistoffset__") == 0) {
                     // The PyMemberDef must be a Py_ssize_t and readonly
-                    assert(memb->type == T_PYSSIZET);
-                    assert(memb->flags == READONLY);
+                    assert(memb->type == Py_T_PYSSIZET);
+                    assert(memb->flags == Py_READONLY);
                     weaklistoffset = memb->offset;
                 }
                 if (strcmp(memb->name, "__dictoffset__") == 0) {
                     // The PyMemberDef must be a Py_ssize_t and readonly
-                    assert(memb->type == T_PYSSIZET);
-                    assert(memb->flags == READONLY);
+                    assert(memb->type == Py_T_PYSSIZET);
+                    assert(memb->flags == Py_READONLY);
                     dictoffset = memb->offset;
                 }
                 if (strcmp(memb->name, "__vectorcalloffset__") == 0) {
                     // The PyMemberDef must be a Py_ssize_t and readonly
-                    assert(memb->type == T_PYSSIZET);
-                    assert(memb->flags == READONLY);
+                    assert(memb->type == Py_T_PYSSIZET);
+                    assert(memb->flags == Py_READONLY);
                     vectorcalloffset = memb->offset;
                 }
                 if (memb->flags & Py_RELATIVE_OFFSET) {
@@ -4163,13 +4264,13 @@ _PyType_FromMetaclass_impl(
                      metaclass);
         goto finally;
     }
-    if (metaclass->tp_new != PyType_Type.tp_new) {
+    if (metaclass->tp_new && metaclass->tp_new != PyType_Type.tp_new) {
         if (_allow_tp_new) {
             if (PyErr_WarnFormat(
                     PyExc_DeprecationWarning, 1,
-                    "Using PyType_Spec with metaclasses that have custom "
-                    "tp_new is deprecated and will no longer be allowed in "
-                    "Python 3.14.") < 0) {
+                    "Type %s uses PyType_Spec with a metaclass that has custom "
+                    "tp_new. This is deprecated and will no longer be allowed in "
+                    "Python 3.14.", spec->name) < 0) {
                 goto finally;
             }
         }
@@ -4439,6 +4540,12 @@ PyType_GetQualName(PyTypeObject *type)
     return type_qualname(type, NULL);
 }
 
+PyObject *
+_PyType_GetModuleName(PyTypeObject *type)
+{
+    return type_module(type, NULL);
+}
+
 void *
 PyType_GetSlot(PyTypeObject *type, int slot)
 {
@@ -4828,8 +4935,6 @@ type_setattro(PyTypeObject *type, PyObject *name, PyObject *value)
     }
     if (PyUnicode_Check(name)) {
         if (PyUnicode_CheckExact(name)) {
-            if (PyUnicode_READY(name) == -1)
-                return -1;
             Py_INCREF(name);
         }
         else {
@@ -4870,9 +4975,6 @@ type_setattro(PyTypeObject *type, PyObject *name, PyObject *value)
     return res;
 }
 
-extern void
-_PyDictKeys_DecRef(PyDictKeysObject *keys);
-
 
 static void
 type_dealloc_common(PyTypeObject *type)
@@ -4914,17 +5016,20 @@ clear_static_tp_subclasses(PyTypeObject *type)
        going to leak.  This mostly only affects embedding scenarios.
      */
 
+#ifndef NDEBUG
     // For now we just do a sanity check and then clear tp_subclasses.
     Py_ssize_t i = 0;
     PyObject *key, *ref;  // borrowed ref
     while (PyDict_Next(subclasses, &i, &key, &ref)) {
-        PyTypeObject *subclass = type_from_ref(ref);  // borrowed
+        PyTypeObject *subclass = type_from_ref(ref);
         if (subclass == NULL) {
             continue;
         }
         // All static builtin subtypes should have been finalized already.
         assert(!(subclass->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN));
+        Py_DECREF(subclass);
     }
+#endif
 
     clear_tp_subclasses(type);
 }
@@ -5041,7 +5146,7 @@ merge_class_dict(PyObject *dict, PyObject *aclass)
     assert(aclass);
 
     /* Merge in the type's dict (if any). */
-    if (_PyObject_LookupAttr(aclass, &_Py_ID(__dict__), &classdict) < 0) {
+    if (PyObject_GetOptionalAttr(aclass, &_Py_ID(__dict__), &classdict) < 0) {
         return -1;
     }
     if (classdict != NULL) {
@@ -5052,7 +5157,7 @@ merge_class_dict(PyObject *dict, PyObject *aclass)
     }
 
     /* Recursively merge in the base types' (if any) dicts. */
-    if (_PyObject_LookupAttr(aclass, &_Py_ID(__bases__), &bases) < 0) {
+    if (PyObject_GetOptionalAttr(aclass, &_Py_ID(__bases__), &bases) < 0) {
         return -1;
     }
     if (bases != NULL) {
@@ -5136,8 +5241,10 @@ static PyMethodDef type_methods[] = {
     TYPE___SUBCLASSES___METHODDEF
     {"__prepare__", _PyCFunction_CAST(type_prepare),
      METH_FASTCALL | METH_KEYWORDS | METH_CLASS,
-     PyDoc_STR("__prepare__() -> dict\n"
-               "used to create the namespace for the class statement")},
+     PyDoc_STR("__prepare__($cls, name, bases, /, **kwds)\n"
+               "--\n"
+               "\n"
+               "Create the namespace for the class statement")},
     TYPE___INSTANCECHECK___METHODDEF
     TYPE___SUBCLASSCHECK___METHODDEF
     TYPE___DIR___METHODDEF
@@ -5518,6 +5625,12 @@ object_richcompare(PyObject *self, PyObject *other, int op)
     return res;
 }
 
+PyObject*
+_Py_BaseObject_RichCompare(PyObject* self, PyObject* other, int op)
+{
+    return object_richcompare(self, other, op);
+}
+
 static PyObject *
 object_get_class(PyObject *self, void *closure)
 {
@@ -5768,24 +5881,22 @@ _PyType_GetSlotNames(PyTypeObject *cls)
 
     /* Get the slot names from the cache in the class if possible. */
     PyObject *dict = lookup_tp_dict(cls);
-    slotnames = PyDict_GetItemWithError(dict, &_Py_ID(__slotnames__));
+    if (PyDict_GetItemRef(dict, &_Py_ID(__slotnames__), &slotnames) < 0) {
+        return NULL;
+    }
     if (slotnames != NULL) {
         if (slotnames != Py_None && !PyList_Check(slotnames)) {
             PyErr_Format(PyExc_TypeError,
                          "%.200s.__slotnames__ should be a list or None, "
                          "not %.200s",
                          cls->tp_name, Py_TYPE(slotnames)->tp_name);
+            Py_DECREF(slotnames);
             return NULL;
         }
-        return Py_NewRef(slotnames);
-    }
-    else {
-        if (PyErr_Occurred()) {
-            return NULL;
-        }
-        /* The class does not have the slot names cached yet. */
+        return slotnames;
     }
 
+    /* The class does not have the slot names cached yet. */
     copyreg = import_copyreg();
     if (copyreg == NULL)
         return NULL;
@@ -5878,7 +5989,7 @@ object_getstate_default(PyObject *obj, int required)
             PyObject *name, *value;
 
             name = Py_NewRef(PyList_GET_ITEM(slotnames, i));
-            if (_PyObject_LookupAttr(obj, name, &value) < 0) {
+            if (PyObject_GetOptionalAttr(obj, name, &value) < 0) {
                 Py_DECREF(name);
                 goto error;
             }
@@ -6264,7 +6375,7 @@ object___reduce_ex___impl(PyObject *self, int protocol)
 /*[clinic end generated code: output=2e157766f6b50094 input=f326b43fb8a4c5ff]*/
 {
 #define objreduce \
-    (_Py_INTERP_CACHED_OBJECT(_PyInterpreterState_Get(), objreduce))
+    (_Py_INTERP_CACHED_OBJECT(_PyInterpreterState_GET(), objreduce))
     PyObject *reduce, *res;
 
     if (objreduce == NULL) {
@@ -6275,7 +6386,7 @@ object___reduce_ex___impl(PyObject *self, int protocol)
         }
     }
 
-    if (_PyObject_LookupAttr(self, &_Py_ID(__reduce__), &reduce) < 0) {
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(__reduce__), &reduce) < 0) {
         return NULL;
     }
     if (reduce != NULL) {
@@ -6394,7 +6505,7 @@ object___dir___impl(PyObject *self)
     PyObject *itsclass = NULL;
 
     /* Get __dict__ (which may or may not be a real dict...) */
-    if (_PyObject_LookupAttr(self, &_Py_ID(__dict__), &dict) < 0) {
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(__dict__), &dict) < 0) {
         return NULL;
     }
     if (dict == NULL) {
@@ -6414,7 +6525,7 @@ object___dir___impl(PyObject *self)
         goto error;
 
     /* Merge in attrs reachable from its class. */
-    if (_PyObject_LookupAttr(self, &_Py_ID(__class__), &itsclass) < 0) {
+    if (PyObject_GetOptionalAttr(self, &_Py_ID(__class__), &itsclass) < 0) {
         goto error;
     }
     /* XXX(tomer): Perhaps fall back to Py_TYPE(obj) if no
@@ -6929,12 +7040,8 @@ type_ready_pre_checks(PyTypeObject *type)
 
 
 static int
-type_ready_set_bases(PyTypeObject *type)
+type_ready_set_base(PyTypeObject *type)
 {
-    if (lookup_tp_bases(type) != NULL) {
-        return 0;
-    }
-
     /* Initialize tp_base (defaults to BaseObject unless that's us) */
     PyTypeObject *base = type->tp_base;
     if (base == NULL && type != &PyBaseObject_Type) {
@@ -6958,6 +7065,12 @@ type_ready_set_bases(PyTypeObject *type)
         }
     }
 
+    return 0;
+}
+
+static int
+type_ready_set_type(PyTypeObject *type)
+{
     /* Initialize ob_type if NULL.      This means extensions that want to be
        compilable separately on Windows can call PyType_Ready() instead of
        initializing the ob_type field of their type objects. */
@@ -6965,11 +7078,25 @@ type_ready_set_bases(PyTypeObject *type)
        NULL when type is &PyBaseObject_Type, and we know its ob_type is
        not NULL (it's initialized to &PyType_Type).      But coverity doesn't
        know that. */
+    PyTypeObject *base = type->tp_base;
     if (Py_IS_TYPE(type, NULL) && base != NULL) {
         Py_SET_TYPE(type, Py_TYPE(base));
     }
 
-    /* Initialize tp_bases */
+    return 0;
+}
+
+static int
+type_ready_set_bases(PyTypeObject *type)
+{
+    if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
+        if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+            assert(lookup_tp_bases(type) != NULL);
+            return 0;
+        }
+        assert(lookup_tp_bases(type) == NULL);
+    }
+
     PyObject *bases = lookup_tp_bases(type);
     if (bases == NULL) {
         PyTypeObject *base = type->tp_base;
@@ -7094,6 +7221,14 @@ type_ready_preheader(PyTypeObject *type)
 static int
 type_ready_mro(PyTypeObject *type)
 {
+    if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
+        if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+            assert(lookup_tp_mro(type) != NULL);
+            return 0;
+        }
+        assert(lookup_tp_mro(type) == NULL);
+    }
+
     /* Calculate method resolution order */
     if (mro_internal(type, NULL) < 0) {
         return -1;
@@ -7364,13 +7499,19 @@ type_ready(PyTypeObject *type, int rerunbuiltin)
      * to get type objects into the doubly-linked list of all objects.
      * Still, not all type objects go through PyType_Ready.
      */
-    _Py_AddToAllObjects((PyObject *)type, 0);
+    _Py_AddToAllObjects((PyObject *)type);
 #endif
 
     /* Initialize tp_dict: _PyType_IsReady() tests if tp_dict != NULL */
     if (type_ready_set_dict(type) < 0) {
         goto error;
     }
+    if (type_ready_set_base(type) < 0) {
+        goto error;
+    }
+    if (type_ready_set_type(type) < 0) {
+        goto error;
+    }
     if (type_ready_set_bases(type) < 0) {
         goto error;
     }
@@ -7535,10 +7676,15 @@ get_subclasses_key(PyTypeObject *type, PyTypeObject *base)
     PyObject *subclasses = lookup_tp_subclasses(base);
     if (subclasses != NULL) {
         while (PyDict_Next(subclasses, &i, &key, &ref)) {
-            PyTypeObject *subclass = type_from_ref(ref);  // borrowed
+            PyTypeObject *subclass = type_from_ref(ref);
+            if (subclass == NULL) {
+                continue;
+            }
             if (subclass == type) {
+                Py_DECREF(subclass);
                 return Py_NewRef(key);
             }
+            Py_DECREF(subclass);
         }
     }
     /* It wasn't found. */
@@ -8252,7 +8398,7 @@ method_is_overloaded(PyObject *left, PyObject *right, PyObject *name)
     PyObject *a, *b;
     int ok;
 
-    if (_PyObject_LookupAttr((PyObject *)(Py_TYPE(right)), name, &b) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *)(Py_TYPE(right)), name, &b) < 0) {
         return -1;
     }
     if (b == NULL) {
@@ -8260,7 +8406,7 @@ method_is_overloaded(PyObject *left, PyObject *right, PyObject *name)
         return 0;
     }
 
-    if (_PyObject_LookupAttr((PyObject *)(Py_TYPE(left)), name, &a) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject *)(Py_TYPE(left)), name, &a) < 0) {
         Py_DECREF(b);
         return -1;
     }
@@ -9139,7 +9285,7 @@ releasebuffer_call_python(PyObject *self, Py_buffer *buffer)
         // from a Python __buffer__ function.
         mv = PyMemoryView_FromBuffer(buffer);
         if (mv == NULL) {
-            PyErr_WriteUnraisable(self);
+            PyErr_FormatUnraisable("Exception ignored in bf_releasebuffer of %s", Py_TYPE(self)->tp_name);
             goto end;
         }
         // Set the memoryview to restricted mode, which forbids
@@ -9152,7 +9298,7 @@ releasebuffer_call_python(PyObject *self, Py_buffer *buffer)
     PyObject *stack[2] = {self, mv};
     PyObject *ret = vectorcall_method(&_Py_ID(__release_buffer__), stack, 2);
     if (ret == NULL) {
-        PyErr_WriteUnraisable(self);
+        PyErr_FormatUnraisable("Exception ignored in __release_buffer__ of %s", Py_TYPE(self)->tp_name);
     }
     else {
         Py_DECREF(ret);
@@ -9160,7 +9306,7 @@ releasebuffer_call_python(PyObject *self, Py_buffer *buffer)
     if (!is_buffer_wrapper) {
         PyObject *res = PyObject_CallMethodNoArgs(mv, &_Py_ID(release));
         if (res == NULL) {
-            PyErr_WriteUnraisable(self);
+            PyErr_FormatUnraisable("Exception ignored in bf_releasebuffer of %s", Py_TYPE(self)->tp_name);
         }
         else {
             Py_DECREF(res);
@@ -9369,7 +9515,7 @@ static pytype_slotdef slotdefs[] = {
             "__buffer__($self, flags, /)\n--\n\n"
             "Return a buffer object that exposes the underlying memory of the object."),
     BUFSLOT(__release_buffer__, bf_releasebuffer, slot_bf_releasebuffer, wrap_releasebuffer,
-            "__release_buffer__($self, /)\n--\n\n"
+            "__release_buffer__($self, buffer, /)\n--\n\n"
             "Release the buffer object that exposes the underlying memory of the object."),
 
     AMSLOT(__await__, am_await, slot_am_await, wrap_unaryfunc,
@@ -9555,7 +9701,7 @@ resolve_slotdups(PyTypeObject *type, PyObject *name)
     /* XXX Maybe this could be optimized more -- but is it worth it? */
 
     /* pname and ptrs act as a little cache */
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
 #define pname _Py_INTERP_CACHED_OBJECT(interp, type_slots_pname)
 #define ptrs _Py_INTERP_CACHED_OBJECT(interp, type_slots_ptrs)
     pytype_slotdef *p, **pp;
@@ -9882,7 +10028,8 @@ static int
 type_new_init_subclass(PyTypeObject *type, PyObject *kwds)
 {
     PyObject *args[2] = {(PyObject *)type, (PyObject *)type};
-    PyObject *super = _PyObject_FastCall((PyObject *)&PySuper_Type, args, 2);
+    PyObject *super = PyObject_Vectorcall((PyObject *)&PySuper_Type,
+                                          args, 2, NULL);
     if (super == NULL) {
         return -1;
     }
@@ -9934,7 +10081,7 @@ recurse_down_subclasses(PyTypeObject *type, PyObject *attr_name,
     Py_ssize_t i = 0;
     PyObject *ref;
     while (PyDict_Next(subclasses, &i, NULL, &ref)) {
-        PyTypeObject *subclass = type_from_ref(ref);  // borrowed
+        PyTypeObject *subclass = type_from_ref(ref);
         if (subclass == NULL) {
             continue;
         }
@@ -9944,16 +10091,20 @@ recurse_down_subclasses(PyTypeObject *type, PyObject *attr_name,
         if (dict != NULL && PyDict_Check(dict)) {
             int r = PyDict_Contains(dict, attr_name);
             if (r < 0) {
+                Py_DECREF(subclass);
                 return -1;
             }
             if (r > 0) {
+                Py_DECREF(subclass);
                 continue;
             }
         }
 
         if (update_subclasses(subclass, attr_name, callback, data) < 0) {
+            Py_DECREF(subclass);
             return -1;
         }
+        Py_DECREF(subclass);
     }
     return 0;
 }
@@ -10040,11 +10191,11 @@ typedef struct {
 } superobject;
 
 static PyMemberDef super_members[] = {
-    {"__thisclass__", T_OBJECT, offsetof(superobject, type), READONLY,
+    {"__thisclass__", _Py_T_OBJECT, offsetof(superobject, type), Py_READONLY,
      "the class invoking super()"},
-    {"__self__",  T_OBJECT, offsetof(superobject, obj), READONLY,
+    {"__self__",  _Py_T_OBJECT, offsetof(superobject, obj), Py_READONLY,
      "the instance invoking super(); may be None"},
-    {"__self_class__", T_OBJECT, offsetof(superobject, obj_type), READONLY,
+    {"__self_class__", _Py_T_OBJECT, offsetof(superobject, obj_type), Py_READONLY,
      "the type of the instance invoking super(); may be None"},
     {0}
 };
@@ -10104,23 +10255,18 @@ _super_lookup_descr(PyTypeObject *su_type, PyTypeObject *su_obj_type, PyObject *
         return NULL;
 
     /* keep a strong reference to mro because su_obj_type->tp_mro can be
-       replaced during PyDict_GetItemWithError(dict, name)  */
+       replaced during PyDict_GetItemRef(dict, name, &res)  */
     Py_INCREF(mro);
     do {
         PyObject *obj = PyTuple_GET_ITEM(mro, i);
         PyObject *dict = lookup_tp_dict(_PyType_CAST(obj));
         assert(dict != NULL && PyDict_Check(dict));
 
-        res = PyDict_GetItemWithError(dict, name);
-        if (res != NULL) {
-            Py_INCREF(res);
+        if (PyDict_GetItemRef(dict, name, &res) != 0) {
+            // found or error
             Py_DECREF(mro);
             return res;
         }
-        else if (PyErr_Occurred()) {
-            Py_DECREF(mro);
-            return NULL;
-        }
 
         i++;
     } while (i < n);
@@ -10227,7 +10373,7 @@ supercheck(PyTypeObject *type, PyObject *obj)
         /* Try the slow way */
         PyObject *class_attr;
 
-        if (_PyObject_LookupAttr(obj, &_Py_ID(__class__), &class_attr) < 0) {
+        if (PyObject_GetOptionalAttr(obj, &_Py_ID(__class__), &class_attr) < 0) {
             return NULL;
         }
         if (class_attr != NULL &&
@@ -10304,7 +10450,7 @@ super_init_without_args(_PyInterpreterFrame *cframe, PyCodeObject *co,
         return -1;
     }
 
-    assert(cframe->f_code->co_nlocalsplus > 0);
+    assert(_PyFrame_GetCode(cframe)->co_nlocalsplus > 0);
     PyObject *firstarg = _PyFrame_GetLocalsArray(cframe)[0];
     // The first argument might be a cell.
     if (firstarg != NULL && (_PyLocals_GetKind(co->co_localspluskinds, 0) & CO_FAST_CELL)) {
@@ -10397,7 +10543,7 @@ super_init_impl(PyObject *self, PyTypeObject *type, PyObject *obj) {
                             "super(): no current frame");
             return -1;
         }
-        int res = super_init_without_args(frame, frame->f_code, &type, &obj);
+        int res = super_init_without_args(frame, _PyFrame_GetCode(frame), &type, &obj);
 
         if (res < 0) {
             return -1;
diff --git a/Objects/typevarobject.c b/Objects/typevarobject.c
new file mode 100644
index 00000000000000..7f80c9c61b8abc
--- /dev/null
+++ b/Objects/typevarobject.c
@@ -0,0 +1,1689 @@
+// TypeVar, TypeVarTuple, and ParamSpec
+#include "Python.h"
+#include "pycore_object.h"        // _PyObject_GC_TRACK/UNTRACK
+#include "pycore_typevarobject.h"
+#include "pycore_unionobject.h"   // _Py_union_type_or
+
+
+/*[clinic input]
+class typevar "typevarobject *" "&_PyTypeVar_Type"
+class paramspec "paramspecobject *" "&_PyParamSpec_Type"
+class paramspecargs "paramspecattrobject *" "&_PyParamSpecArgs_Type"
+class paramspeckwargs "paramspecattrobject *" "&_PyParamSpecKwargs_Type"
+class typevartuple "typevartupleobject *" "&_PyTypeVarTuple_Type"
+class typealias "typealiasobject *" "&_PyTypeAlias_Type"
+class Generic "PyObject *" "&PyGeneric_Type"
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=aa86741931a0f55c]*/
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *name;
+    PyObject *bound;
+    PyObject *evaluate_bound;
+    PyObject *constraints;
+    PyObject *evaluate_constraints;
+    bool covariant;
+    bool contravariant;
+    bool infer_variance;
+} typevarobject;
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *name;
+} typevartupleobject;
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *name;
+    PyObject *bound;
+    bool covariant;
+    bool contravariant;
+    bool infer_variance;
+} paramspecobject;
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *name;
+    PyObject *type_params;
+    PyObject *compute_value;
+    PyObject *value;
+    PyObject *module;
+} typealiasobject;
+
+#include "clinic/typevarobject.c.h"
+
+static PyObject *
+call_typing_func_object(const char *name, PyObject **args, size_t nargs)
+{
+    PyObject *typing = PyImport_ImportModule("typing");
+    if (typing == NULL) {
+        return NULL;
+    }
+    PyObject *func = PyObject_GetAttrString(typing, name);
+    if (func == NULL) {
+        Py_DECREF(typing);
+        return NULL;
+    }
+    PyObject *result = PyObject_Vectorcall(func, args, nargs, NULL);
+    Py_DECREF(func);
+    Py_DECREF(typing);
+    return result;
+}
+
+static PyObject *
+type_check(PyObject *arg, const char *msg)
+{
+    // Calling typing.py here leads to bootstrapping problems
+    if (Py_IsNone(arg)) {
+        return Py_NewRef(Py_TYPE(arg));
+    }
+    PyObject *message_str = PyUnicode_FromString(msg);
+    if (message_str == NULL) {
+        return NULL;
+    }
+    PyObject *args[2] = {arg, message_str};
+    PyObject *result = call_typing_func_object("_type_check", args, 2);
+    Py_DECREF(message_str);
+    return result;
+}
+
+/*
+ * Return a typing.Union. This is used as the nb_or (|) operator for
+ * TypeVar and ParamSpec. We use this rather than _Py_union_type_or
+ * (which would produce a types.Union) because historically TypeVar
+ * supported unions with string forward references, and we want to
+ * preserve that behavior. _Py_union_type_or only allows a small set
+ * of types.
+ */
+static PyObject *
+make_union(PyObject *self, PyObject *other)
+{
+    PyObject *args[2] = {self, other};
+    PyObject *result = call_typing_func_object("_make_union", args, 2);
+    return result;
+}
+
+static PyObject *
+caller(void)
+{
+    _PyInterpreterFrame *f = _PyThreadState_GET()->current_frame;
+    if (f == NULL) {
+        Py_RETURN_NONE;
+    }
+    if (f == NULL || f->f_funcobj == NULL) {
+        Py_RETURN_NONE;
+    }
+    PyObject *r = PyFunction_GetModule(f->f_funcobj);
+    if (!r) {
+        PyErr_Clear();
+        Py_RETURN_NONE;
+    }
+    return Py_NewRef(r);
+}
+
+static PyObject *
+typevartuple_unpack(PyObject *tvt)
+{
+    PyObject *typing = PyImport_ImportModule("typing");
+    if (typing == NULL) {
+        return NULL;
+    }
+    PyObject *unpack = PyObject_GetAttrString(typing, "Unpack");
+    if (unpack == NULL) {
+        Py_DECREF(typing);
+        return NULL;
+    }
+    PyObject *unpacked = PyObject_GetItem(unpack, tvt);
+    Py_DECREF(typing);
+    Py_DECREF(unpack);
+    return unpacked;
+}
+
+static int
+contains_typevartuple(PyTupleObject *params)
+{
+    Py_ssize_t n = PyTuple_GET_SIZE(params);
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.typevartuple_type;
+    for (Py_ssize_t i = 0; i < n; i++) {
+        PyObject *param = PyTuple_GET_ITEM(params, i);
+        if (Py_IS_TYPE(param, tp)) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+static PyObject *
+unpack_typevartuples(PyObject *params)
+{
+    assert(PyTuple_Check(params));
+    // TypeVarTuple must be unpacked when passed to Generic, so we do that here.
+    if (contains_typevartuple((PyTupleObject *)params)) {
+        Py_ssize_t n = PyTuple_GET_SIZE(params);
+        PyObject *new_params = PyTuple_New(n);
+        if (new_params == NULL) {
+            return NULL;
+        }
+        PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.typevartuple_type;
+        for (Py_ssize_t i = 0; i < n; i++) {
+            PyObject *param = PyTuple_GET_ITEM(params, i);
+            if (Py_IS_TYPE(param, tp)) {
+                PyObject *unpacked = typevartuple_unpack(param);
+                if (unpacked == NULL) {
+                    Py_DECREF(new_params);
+                    return NULL;
+                }
+                PyTuple_SET_ITEM(new_params, i, unpacked);
+            }
+            else {
+                PyTuple_SET_ITEM(new_params, i, Py_NewRef(param));
+            }
+        }
+        return new_params;
+    }
+    else {
+        return Py_NewRef(params);
+    }
+}
+
+static void
+typevar_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    typevarobject *tv = (typevarobject *)self;
+
+    _PyObject_GC_UNTRACK(self);
+
+    Py_DECREF(tv->name);
+    Py_XDECREF(tv->bound);
+    Py_XDECREF(tv->evaluate_bound);
+    Py_XDECREF(tv->constraints);
+    Py_XDECREF(tv->evaluate_constraints);
+    PyObject_ClearManagedDict(self);
+    PyObject_ClearWeakRefs(self);
+
+    Py_TYPE(self)->tp_free(self);
+    Py_DECREF(tp);
+}
+
+static int
+typevar_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    typevarobject *tv = (typevarobject *)self;
+    Py_VISIT(tv->bound);
+    Py_VISIT(tv->evaluate_bound);
+    Py_VISIT(tv->constraints);
+    Py_VISIT(tv->evaluate_constraints);
+    PyObject_VisitManagedDict(self, visit, arg);
+    return 0;
+}
+
+static int
+typevar_clear(typevarobject *self)
+{
+    Py_CLEAR(self->bound);
+    Py_CLEAR(self->evaluate_bound);
+    Py_CLEAR(self->constraints);
+    Py_CLEAR(self->evaluate_constraints);
+    PyObject_ClearManagedDict((PyObject *)self);
+    return 0;
+}
+
+static PyObject *
+typevar_repr(PyObject *self)
+{
+    typevarobject *tv = (typevarobject *)self;
+
+    if (tv->infer_variance) {
+        return Py_NewRef(tv->name);
+    }
+
+    char variance = tv->covariant ? '+' : tv->contravariant ? '-' : '~';
+    return PyUnicode_FromFormat("%c%U", variance, tv->name);
+}
+
+static PyMemberDef typevar_members[] = {
+    {"__name__", _Py_T_OBJECT, offsetof(typevarobject, name), Py_READONLY},
+    {"__covariant__", Py_T_BOOL, offsetof(typevarobject, covariant), Py_READONLY},
+    {"__contravariant__", Py_T_BOOL, offsetof(typevarobject, contravariant), Py_READONLY},
+    {"__infer_variance__", Py_T_BOOL, offsetof(typevarobject, infer_variance), Py_READONLY},
+    {0}
+};
+
+static PyObject *
+typevar_bound(typevarobject *self, void *Py_UNUSED(ignored))
+{
+    if (self->bound != NULL) {
+        return Py_NewRef(self->bound);
+    }
+    if (self->evaluate_bound == NULL) {
+        Py_RETURN_NONE;
+    }
+    PyObject *bound = PyObject_CallNoArgs(self->evaluate_bound);
+    self->bound = Py_XNewRef(bound);
+    return bound;
+}
+
+static PyObject *
+typevar_constraints(typevarobject *self, void *Py_UNUSED(ignored))
+{
+    if (self->constraints != NULL) {
+        return Py_NewRef(self->constraints);
+    }
+    if (self->evaluate_constraints == NULL) {
+        return PyTuple_New(0);
+    }
+    PyObject *constraints = PyObject_CallNoArgs(self->evaluate_constraints);
+    self->constraints = Py_XNewRef(constraints);
+    return constraints;
+}
+
+static PyGetSetDef typevar_getset[] = {
+    {"__bound__", (getter)typevar_bound, NULL, NULL, NULL},
+    {"__constraints__", (getter)typevar_constraints, NULL, NULL, NULL},
+    {0}
+};
+
+static typevarobject *
+typevar_alloc(PyObject *name, PyObject *bound, PyObject *evaluate_bound,
+              PyObject *constraints, PyObject *evaluate_constraints,
+              bool covariant, bool contravariant, bool infer_variance,
+              PyObject *module)
+{
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.typevar_type;
+    assert(tp != NULL);
+    typevarobject *tv = PyObject_GC_New(typevarobject, tp);
+    if (tv == NULL) {
+        return NULL;
+    }
+
+    tv->name = Py_NewRef(name);
+
+    tv->bound = Py_XNewRef(bound);
+    tv->evaluate_bound = Py_XNewRef(evaluate_bound);
+    tv->constraints = Py_XNewRef(constraints);
+    tv->evaluate_constraints = Py_XNewRef(evaluate_constraints);
+
+    tv->covariant = covariant;
+    tv->contravariant = contravariant;
+    tv->infer_variance = infer_variance;
+    _PyObject_GC_TRACK(tv);
+
+    if (module != NULL) {
+        if (PyObject_SetAttrString((PyObject *)tv, "__module__", module) < 0) {
+            Py_DECREF(tv);
+            return NULL;
+        }
+    }
+
+    return tv;
+}
+
+/*[clinic input]
+@classmethod
+typevar.__new__ as typevar_new
+
+    name: object(subclass_of="&PyUnicode_Type")
+    *constraints: object
+    bound: object = None
+    covariant: bool = False
+    contravariant: bool = False
+    infer_variance: bool = False
+
+Create a TypeVar.
+[clinic start generated code]*/
+
+static PyObject *
+typevar_new_impl(PyTypeObject *type, PyObject *name, PyObject *constraints,
+                 PyObject *bound, int covariant, int contravariant,
+                 int infer_variance)
+/*[clinic end generated code: output=1d200450ee99226d input=41ae33a916bfe76f]*/
+{
+    if (covariant && contravariant) {
+        PyErr_SetString(PyExc_ValueError,
+                        "Bivariant types are not supported.");
+        return NULL;
+    }
+
+    if (infer_variance && (covariant || contravariant)) {
+        PyErr_SetString(PyExc_ValueError,
+                        "Variance cannot be specified with infer_variance.");
+        return NULL;
+    }
+
+    if (Py_IsNone(bound)) {
+        bound = NULL;
+    }
+    if (bound != NULL) {
+        bound = type_check(bound, "Bound must be a type.");
+        if (bound == NULL) {
+            return NULL;
+        }
+    }
+
+    assert(PyTuple_CheckExact(constraints));
+    Py_ssize_t n_constraints = PyTuple_GET_SIZE(constraints);
+    if (n_constraints == 1) {
+        PyErr_SetString(PyExc_TypeError,
+                        "A single constraint is not allowed");
+        Py_XDECREF(bound);
+        return NULL;
+    } else if (n_constraints == 0) {
+        constraints = NULL;
+    } else if (bound != NULL) {
+        PyErr_SetString(PyExc_TypeError,
+                        "Constraints cannot be combined with bound=...");
+        Py_XDECREF(bound);
+        return NULL;
+    }
+    PyObject *module = caller();
+    if (module == NULL) {
+        Py_XDECREF(bound);
+        return NULL;
+    }
+
+    PyObject *tv = (PyObject *)typevar_alloc(name, bound, NULL,
+                                             constraints, NULL,
+                                             covariant, contravariant,
+                                             infer_variance, module);
+    Py_XDECREF(bound);
+    Py_XDECREF(module);
+    return tv;
+}
+
+/*[clinic input]
+typevar.__typing_subst__ as typevar_typing_subst
+
+    arg: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+typevar_typing_subst(typevarobject *self, PyObject *arg)
+/*[clinic end generated code: output=0773735e8ce18968 input=9e87b57f0fc59b92]*/
+{
+    PyObject *args[2] = {(PyObject *)self, arg};
+    PyObject *result = call_typing_func_object("_typevar_subst", args, 2);
+    return result;
+}
+
+/*[clinic input]
+typevar.__reduce__ as typevar_reduce
+
+[clinic start generated code]*/
+
+static PyObject *
+typevar_reduce_impl(typevarobject *self)
+/*[clinic end generated code: output=02e5c55d7cf8a08f input=de76bc95f04fb9ff]*/
+{
+    return Py_NewRef(self->name);
+}
+
+static PyObject *
+typevar_mro_entries(PyObject *self, PyObject *args)
+{
+    PyErr_SetString(PyExc_TypeError,
+                    "Cannot subclass an instance of TypeVar");
+    return NULL;
+}
+
+static PyMethodDef typevar_methods[] = {
+    TYPEVAR_TYPING_SUBST_METHODDEF
+    TYPEVAR_REDUCE_METHODDEF
+    {"__mro_entries__", typevar_mro_entries, METH_O},
+    {0}
+};
+
+PyDoc_STRVAR(typevar_doc,
+"Type variable.\n\
+\n\
+The preferred way to construct a type variable is via the dedicated\n\
+syntax for generic functions, classes, and type aliases::\n\
+\n\
+    class Sequence[T]:  # T is a TypeVar\n\
+        ...\n\
+\n\
+This syntax can also be used to create bound and constrained type\n\
+variables::\n\
+\n\
+    # S is a TypeVar bound to str\n\
+    class StrSequence[S: str]:\n\
+        ...\n\
+\n\
+    # A is a TypeVar constrained to str or bytes\n\
+    class StrOrBytesSequence[A: (str, bytes)]:\n\
+        ...\n\
+\n\
+However, if desired, reusable type variables can also be constructed\n\
+manually, like so::\n\
+\n\
+   T = TypeVar('T')  # Can be anything\n\
+   S = TypeVar('S', bound=str)  # Can be any subtype of str\n\
+   A = TypeVar('A', str, bytes)  # Must be exactly str or bytes\n\
+\n\
+Type variables exist primarily for the benefit of static type\n\
+checkers.  They serve as the parameters for generic types as well\n\
+as for generic function and type alias definitions.\n\
+\n\
+The variance of type variables is inferred by type checkers when they\n\
+are created through the type parameter syntax and when\n\
+``infer_variance=True`` is passed. Manually created type variables may\n\
+be explicitly marked covariant or contravariant by passing\n\
+``covariant=True`` or ``contravariant=True``. By default, manually\n\
+created type variables are invariant. See PEP 484 and PEP 695 for more\n\
+details.\n\
+");
+
+static PyType_Slot typevar_slots[] = {
+    {Py_tp_doc, (void *)typevar_doc},
+    {Py_tp_methods, typevar_methods},
+    {Py_nb_or, make_union},
+    {Py_tp_new, typevar_new},
+    {Py_tp_dealloc, typevar_dealloc},
+    {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_free, PyObject_GC_Del},
+    {Py_tp_traverse, typevar_traverse},
+    {Py_tp_clear, typevar_clear},
+    {Py_tp_repr, typevar_repr},
+    {Py_tp_members, typevar_members},
+    {Py_tp_getset, typevar_getset},
+    {0, NULL},
+};
+
+PyType_Spec typevar_spec = {
+    .name = "typing.TypeVar",
+    .basicsize = sizeof(typevarobject),
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE
+        | Py_TPFLAGS_MANAGED_DICT | Py_TPFLAGS_MANAGED_WEAKREF,
+    .slots = typevar_slots,
+};
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *__origin__;
+} paramspecattrobject;
+
+static void
+paramspecattr_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    paramspecattrobject *psa = (paramspecattrobject *)self;
+
+    _PyObject_GC_UNTRACK(self);
+
+    Py_XDECREF(psa->__origin__);
+
+    Py_TYPE(self)->tp_free(self);
+    Py_DECREF(tp);
+}
+
+static int
+paramspecattr_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    paramspecattrobject *psa = (paramspecattrobject *)self;
+    Py_VISIT(psa->__origin__);
+    return 0;
+}
+
+static int
+paramspecattr_clear(paramspecattrobject *self)
+{
+    Py_CLEAR(self->__origin__);
+    return 0;
+}
+
+static PyObject *
+paramspecattr_richcompare(PyObject *a, PyObject *b, int op)
+{
+    if (!Py_IS_TYPE(a, Py_TYPE(b))) {
+        Py_RETURN_NOTIMPLEMENTED;
+    }
+    if (op != Py_EQ && op != Py_NE) {
+        Py_RETURN_NOTIMPLEMENTED;
+    }
+    return PyObject_RichCompare(
+        ((paramspecattrobject *)a)->__origin__,
+        ((paramspecattrobject *)b)->__origin__,
+        op
+    );
+}
+
+static PyMemberDef paramspecattr_members[] = {
+    {"__origin__", _Py_T_OBJECT, offsetof(paramspecattrobject, __origin__), Py_READONLY},
+    {0}
+};
+
+static paramspecattrobject *
+paramspecattr_new(PyTypeObject *tp, PyObject *origin)
+{
+    paramspecattrobject *psa = PyObject_GC_New(paramspecattrobject, tp);
+    if (psa == NULL) {
+        return NULL;
+    }
+    psa->__origin__ = Py_NewRef(origin);
+    _PyObject_GC_TRACK(psa);
+    return psa;
+}
+
+static PyObject *
+paramspecargs_repr(PyObject *self)
+{
+    paramspecattrobject *psa = (paramspecattrobject *)self;
+
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.paramspec_type;
+    if (Py_IS_TYPE(psa->__origin__, tp)) {
+        return PyUnicode_FromFormat("%U.args",
+            ((paramspecobject *)psa->__origin__)->name);
+    }
+    return PyUnicode_FromFormat("%R.args", psa->__origin__);
+}
+
+
+/*[clinic input]
+@classmethod
+paramspecargs.__new__ as paramspecargs_new
+
+    origin: object
+
+Create a ParamSpecArgs object.
+[clinic start generated code]*/
+
+static PyObject *
+paramspecargs_new_impl(PyTypeObject *type, PyObject *origin)
+/*[clinic end generated code: output=9a1463dc8942fe4e input=3596a0bb6183c208]*/
+{
+    return (PyObject *)paramspecattr_new(type, origin);
+}
+
+static PyObject *
+paramspecargs_mro_entries(PyObject *self, PyObject *args)
+{
+    PyErr_SetString(PyExc_TypeError,
+                    "Cannot subclass an instance of ParamSpecArgs");
+    return NULL;
+}
+
+static PyMethodDef paramspecargs_methods[] = {
+    {"__mro_entries__", paramspecargs_mro_entries, METH_O},
+    {0}
+};
+
+PyDoc_STRVAR(paramspecargs_doc,
+"The args for a ParamSpec object.\n\
+\n\
+Given a ParamSpec object P, P.args is an instance of ParamSpecArgs.\n\
+\n\
+ParamSpecArgs objects have a reference back to their ParamSpec::\n\
+\n\
+    >>> P = ParamSpec(\"P\")\n\
+    >>> P.args.__origin__ is P\n\
+    True\n\
+\n\
+This type is meant for runtime introspection and has no special meaning\n\
+to static type checkers.\n\
+");
+
+static PyType_Slot paramspecargs_slots[] = {
+    {Py_tp_doc, (void *)paramspecargs_doc},
+    {Py_tp_methods, paramspecargs_methods},
+    {Py_tp_new, paramspecargs_new},
+    {Py_tp_dealloc, paramspecattr_dealloc},
+    {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_free, PyObject_GC_Del},
+    {Py_tp_traverse, paramspecattr_traverse},
+    {Py_tp_clear, (inquiry)paramspecattr_clear},
+    {Py_tp_repr, paramspecargs_repr},
+    {Py_tp_members, paramspecattr_members},
+    {Py_tp_richcompare, paramspecattr_richcompare},
+    {0, NULL},
+};
+
+PyType_Spec paramspecargs_spec = {
+    .name = "typing.ParamSpecArgs",
+    .basicsize = sizeof(paramspecattrobject),
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE
+        | Py_TPFLAGS_MANAGED_WEAKREF,
+    .slots = paramspecargs_slots,
+};
+
+static PyObject *
+paramspeckwargs_repr(PyObject *self)
+{
+    paramspecattrobject *psk = (paramspecattrobject *)self;
+
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.paramspec_type;
+    if (Py_IS_TYPE(psk->__origin__, tp)) {
+        return PyUnicode_FromFormat("%U.kwargs",
+            ((paramspecobject *)psk->__origin__)->name);
+    }
+    return PyUnicode_FromFormat("%R.kwargs", psk->__origin__);
+}
+
+/*[clinic input]
+@classmethod
+paramspeckwargs.__new__ as paramspeckwargs_new
+
+    origin: object
+
+Create a ParamSpecKwargs object.
+[clinic start generated code]*/
+
+static PyObject *
+paramspeckwargs_new_impl(PyTypeObject *type, PyObject *origin)
+/*[clinic end generated code: output=277b11967ebaf4ab input=981bca9b0cf9e40a]*/
+{
+    return (PyObject *)paramspecattr_new(type, origin);
+}
+
+static PyObject *
+paramspeckwargs_mro_entries(PyObject *self, PyObject *args)
+{
+    PyErr_SetString(PyExc_TypeError,
+                    "Cannot subclass an instance of ParamSpecKwargs");
+    return NULL;
+}
+
+static PyMethodDef paramspeckwargs_methods[] = {
+    {"__mro_entries__", paramspeckwargs_mro_entries, METH_O},
+    {0}
+};
+
+PyDoc_STRVAR(paramspeckwargs_doc,
+"The kwargs for a ParamSpec object.\n\
+\n\
+Given a ParamSpec object P, P.kwargs is an instance of ParamSpecKwargs.\n\
+\n\
+ParamSpecKwargs objects have a reference back to their ParamSpec::\n\
+\n\
+    >>> P = ParamSpec(\"P\")\n\
+    >>> P.kwargs.__origin__ is P\n\
+    True\n\
+\n\
+This type is meant for runtime introspection and has no special meaning\n\
+to static type checkers.\n\
+");
+
+static PyType_Slot paramspeckwargs_slots[] = {
+    {Py_tp_doc, (void *)paramspeckwargs_doc},
+    {Py_tp_methods, paramspeckwargs_methods},
+    {Py_tp_new, paramspeckwargs_new},
+    {Py_tp_dealloc, paramspecattr_dealloc},
+    {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_free, PyObject_GC_Del},
+    {Py_tp_traverse, paramspecattr_traverse},
+    {Py_tp_clear, (inquiry)paramspecattr_clear},
+    {Py_tp_repr, paramspeckwargs_repr},
+    {Py_tp_members, paramspecattr_members},
+    {Py_tp_richcompare, paramspecattr_richcompare},
+    {0, NULL},
+};
+
+PyType_Spec paramspeckwargs_spec = {
+    .name = "typing.ParamSpecKwargs",
+    .basicsize = sizeof(paramspecattrobject),
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE
+        | Py_TPFLAGS_MANAGED_WEAKREF,
+    .slots = paramspeckwargs_slots,
+};
+
+static void
+paramspec_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    paramspecobject *ps = (paramspecobject *)self;
+
+    _PyObject_GC_UNTRACK(self);
+
+    Py_DECREF(ps->name);
+    Py_XDECREF(ps->bound);
+    PyObject_ClearManagedDict(self);
+    PyObject_ClearWeakRefs(self);
+
+    Py_TYPE(self)->tp_free(self);
+    Py_DECREF(tp);
+}
+
+static int
+paramspec_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    paramspecobject *ps = (paramspecobject *)self;
+    Py_VISIT(ps->bound);
+    PyObject_VisitManagedDict(self, visit, arg);
+    return 0;
+}
+
+static int
+paramspec_clear(paramspecobject *self)
+{
+    Py_CLEAR(self->bound);
+    PyObject_ClearManagedDict((PyObject *)self);
+    return 0;
+}
+
+static PyObject *
+paramspec_repr(PyObject *self)
+{
+    paramspecobject *ps = (paramspecobject *)self;
+
+    if (ps->infer_variance) {
+        return Py_NewRef(ps->name);
+    }
+
+    char variance = ps->covariant ? '+' : ps->contravariant ? '-' : '~';
+    return PyUnicode_FromFormat("%c%U", variance, ps->name);
+}
+
+static PyMemberDef paramspec_members[] = {
+    {"__name__", _Py_T_OBJECT, offsetof(paramspecobject, name), Py_READONLY},
+    {"__bound__", _Py_T_OBJECT, offsetof(paramspecobject, bound), Py_READONLY},
+    {"__covariant__", Py_T_BOOL, offsetof(paramspecobject, covariant), Py_READONLY},
+    {"__contravariant__", Py_T_BOOL, offsetof(paramspecobject, contravariant), Py_READONLY},
+    {"__infer_variance__", Py_T_BOOL, offsetof(paramspecobject, infer_variance), Py_READONLY},
+    {0}
+};
+
+static PyObject *
+paramspec_args(PyObject *self, void *unused)
+{
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.paramspecargs_type;
+    return (PyObject *)paramspecattr_new(tp, self);
+}
+
+static PyObject *
+paramspec_kwargs(PyObject *self, void *unused)
+{
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.paramspeckwargs_type;
+    return (PyObject *)paramspecattr_new(tp, self);
+}
+
+static PyGetSetDef paramspec_getset[] = {
+    {"args", (getter)paramspec_args, NULL, PyDoc_STR("Represents positional arguments."), NULL},
+    {"kwargs", (getter)paramspec_kwargs, NULL, PyDoc_STR("Represents keyword arguments."), NULL},
+    {0},
+};
+
+static paramspecobject *
+paramspec_alloc(PyObject *name, PyObject *bound, bool covariant,
+                bool contravariant, bool infer_variance, PyObject *module)
+{
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.paramspec_type;
+    paramspecobject *ps = PyObject_GC_New(paramspecobject, tp);
+    if (ps == NULL) {
+        return NULL;
+    }
+    ps->name = Py_NewRef(name);
+    ps->bound = Py_XNewRef(bound);
+    ps->covariant = covariant;
+    ps->contravariant = contravariant;
+    ps->infer_variance = infer_variance;
+    _PyObject_GC_TRACK(ps);
+    if (module != NULL) {
+        if (PyObject_SetAttrString((PyObject *)ps, "__module__", module) < 0) {
+            Py_DECREF(ps);
+            return NULL;
+        }
+    }
+    return ps;
+}
+
+/*[clinic input]
+@classmethod
+paramspec.__new__ as paramspec_new
+
+    name: object(subclass_of="&PyUnicode_Type")
+    *
+    bound: object = None
+    covariant: bool = False
+    contravariant: bool = False
+    infer_variance: bool = False
+
+Create a ParamSpec object.
+[clinic start generated code]*/
+
+static PyObject *
+paramspec_new_impl(PyTypeObject *type, PyObject *name, PyObject *bound,
+                   int covariant, int contravariant, int infer_variance)
+/*[clinic end generated code: output=fd2daab79cba62da input=57c49c581979b952]*/
+{
+    if (covariant && contravariant) {
+        PyErr_SetString(PyExc_ValueError, "Bivariant types are not supported.");
+        return NULL;
+    }
+    if (infer_variance && (covariant || contravariant)) {
+        PyErr_SetString(PyExc_ValueError, "Variance cannot be specified with infer_variance.");
+        return NULL;
+    }
+    if (bound != NULL) {
+        bound = type_check(bound, "Bound must be a type.");
+        if (bound == NULL) {
+            return NULL;
+        }
+    }
+    PyObject *module = caller();
+    if (module == NULL) {
+        Py_XDECREF(bound);
+        return NULL;
+    }
+    PyObject *ps = (PyObject *)paramspec_alloc(
+        name, bound, covariant, contravariant, infer_variance, module);
+    Py_XDECREF(bound);
+    Py_DECREF(module);
+    return ps;
+}
+
+
+/*[clinic input]
+paramspec.__typing_subst__ as paramspec_typing_subst
+
+    arg: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+paramspec_typing_subst(paramspecobject *self, PyObject *arg)
+/*[clinic end generated code: output=4c5b4aaada1c5814 input=2d5b5e3d4a717189]*/
+{
+    PyObject *args[2] = {(PyObject *)self, arg};
+    PyObject *result = call_typing_func_object("_paramspec_subst", args, 2);
+    return result;
+}
+
+/*[clinic input]
+paramspec.__typing_prepare_subst__ as paramspec_typing_prepare_subst
+
+    alias: object
+    args: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+paramspec_typing_prepare_subst_impl(paramspecobject *self, PyObject *alias,
+                                    PyObject *args)
+/*[clinic end generated code: output=95449d630a2adb9a input=6df6f9fef3e150da]*/
+{
+    PyObject *args_array[3] = {(PyObject *)self, alias, args};
+    PyObject *result = call_typing_func_object(
+        "_paramspec_prepare_subst", args_array, 3);
+    return result;
+}
+
+/*[clinic input]
+paramspec.__reduce__ as paramspec_reduce
+
+[clinic start generated code]*/
+
+static PyObject *
+paramspec_reduce_impl(paramspecobject *self)
+/*[clinic end generated code: output=b83398674416db27 input=5bf349f0d5dd426c]*/
+{
+    return Py_NewRef(self->name);
+}
+
+static PyObject *
+paramspec_mro_entries(PyObject *self, PyObject *args)
+{
+    PyErr_SetString(PyExc_TypeError,
+                    "Cannot subclass an instance of ParamSpec");
+    return NULL;
+}
+
+static PyMethodDef paramspec_methods[] = {
+    PARAMSPEC_TYPING_SUBST_METHODDEF
+    PARAMSPEC_TYPING_PREPARE_SUBST_METHODDEF
+    PARAMSPEC_REDUCE_METHODDEF
+    {"__mro_entries__", paramspec_mro_entries, METH_O},
+    {0}
+};
+
+PyDoc_STRVAR(paramspec_doc,
+"Parameter specification variable.\n\
+\n\
+The preferred way to construct a parameter specification is via the\n\
+dedicated syntax for generic functions, classes, and type aliases,\n\
+where the use of '**' creates a parameter specification::\n\
+\n\
+    type IntFunc[**P] = Callable[P, int]\n\
+\n\
+For compatibility with Python 3.11 and earlier, ParamSpec objects\n\
+can also be created as follows::\n\
+\n\
+    P = ParamSpec('P')\n\
+\n\
+Parameter specification variables exist primarily for the benefit of\n\
+static type checkers.  They are used to forward the parameter types of\n\
+one callable to another callable, a pattern commonly found in\n\
+higher-order functions and decorators.  They are only valid when used\n\
+in ``Concatenate``, or as the first argument to ``Callable``, or as\n\
+parameters for user-defined Generics. See class Generic for more\n\
+information on generic types.\n\
+\n\
+An example for annotating a decorator::\n\
+\n\
+    def add_logging[**P, T](f: Callable[P, T]) -> Callable[P, T]:\n\
+        '''A type-safe decorator to add logging to a function.'''\n\
+        def inner(*args: P.args, **kwargs: P.kwargs) -> T:\n\
+            logging.info(f'{f.__name__} was called')\n\
+            return f(*args, **kwargs)\n\
+        return inner\n\
+\n\
+    @add_logging\n\
+    def add_two(x: float, y: float) -> float:\n\
+        '''Add two numbers together.'''\n\
+        return x + y\n\
+\n\
+Parameter specification variables can be introspected. e.g.::\n\
+\n\
+    >>> P = ParamSpec(\"P\")\n\
+    >>> P.__name__\n\
+    'P'\n\
+\n\
+Note that only parameter specification variables defined in the global\n\
+scope can be pickled.\n\
+");
+
+static PyType_Slot paramspec_slots[] = {
+    {Py_tp_doc, (void *)paramspec_doc},
+    {Py_tp_members, paramspec_members},
+    {Py_tp_methods, paramspec_methods},
+    {Py_tp_getset, paramspec_getset},
+    // Unions of ParamSpecs have no defined meaning, but they were allowed
+    // by the Python implementation, so we allow them here too.
+    {Py_nb_or, make_union},
+    {Py_tp_new, paramspec_new},
+    {Py_tp_dealloc, paramspec_dealloc},
+    {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_free, PyObject_GC_Del},
+    {Py_tp_traverse, paramspec_traverse},
+    {Py_tp_clear, paramspec_clear},
+    {Py_tp_repr, paramspec_repr},
+    {0, 0},
+};
+
+PyType_Spec paramspec_spec = {
+    .name = "typing.ParamSpec",
+    .basicsize = sizeof(paramspecobject),
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE
+        | Py_TPFLAGS_MANAGED_DICT | Py_TPFLAGS_MANAGED_WEAKREF,
+    .slots = paramspec_slots,
+};
+
+static void
+typevartuple_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    _PyObject_GC_UNTRACK(self);
+    typevartupleobject *tvt = (typevartupleobject *)self;
+
+    Py_DECREF(tvt->name);
+    PyObject_ClearManagedDict(self);
+    PyObject_ClearWeakRefs(self);
+
+    Py_TYPE(self)->tp_free(self);
+    Py_DECREF(tp);
+}
+
+static PyObject *
+typevartuple_iter(PyObject *self)
+{
+    PyObject *unpacked = typevartuple_unpack(self);
+    if (unpacked == NULL) {
+        return NULL;
+    }
+    PyObject *tuple = PyTuple_Pack(1, unpacked);
+    if (tuple == NULL) {
+        Py_DECREF(unpacked);
+        return NULL;
+    }
+    PyObject *result = PyObject_GetIter(tuple);
+    Py_DECREF(unpacked);
+    Py_DECREF(tuple);
+    return result;
+}
+
+static PyObject *
+typevartuple_repr(PyObject *self)
+{
+    typevartupleobject *tvt = (typevartupleobject *)self;
+
+    return Py_NewRef(tvt->name);
+}
+
+static PyMemberDef typevartuple_members[] = {
+    {"__name__", _Py_T_OBJECT, offsetof(typevartupleobject, name), Py_READONLY},
+    {0}
+};
+
+static typevartupleobject *
+typevartuple_alloc(PyObject *name, PyObject *module)
+{
+    PyTypeObject *tp = _PyInterpreterState_GET()->cached_objects.typevartuple_type;
+    typevartupleobject *tvt = PyObject_GC_New(typevartupleobject, tp);
+    if (tvt == NULL) {
+        return NULL;
+    }
+    tvt->name = Py_NewRef(name);
+    _PyObject_GC_TRACK(tvt);
+    if (module != NULL) {
+        if (PyObject_SetAttrString((PyObject *)tvt, "__module__", module) < 0) {
+            Py_DECREF(tvt);
+            return NULL;
+        }
+    }
+    return tvt;
+}
+
+/*[clinic input]
+@classmethod
+typevartuple.__new__
+
+    name: object(subclass_of="&PyUnicode_Type")
+
+Create a new TypeVarTuple with the given name.
+[clinic start generated code]*/
+
+static PyObject *
+typevartuple_impl(PyTypeObject *type, PyObject *name)
+/*[clinic end generated code: output=09d417a28f976202 input=00d28abcf1fc96bb]*/
+{
+    PyObject *module = caller();
+    if (module == NULL) {
+        return NULL;
+    }
+    PyObject *result = (PyObject *)typevartuple_alloc(name, module);
+    Py_DECREF(module);
+    return result;
+}
+
+/*[clinic input]
+typevartuple.__typing_subst__ as typevartuple_typing_subst
+
+    arg: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+typevartuple_typing_subst(typevartupleobject *self, PyObject *arg)
+/*[clinic end generated code: output=237054c6d7484eea input=3fcf2dfd9eee7945]*/
+{
+    PyErr_SetString(PyExc_TypeError, "Substitution of bare TypeVarTuple is not supported");
+    return NULL;
+}
+
+/*[clinic input]
+typevartuple.__typing_prepare_subst__ as typevartuple_typing_prepare_subst
+
+    alias: object
+    args: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+typevartuple_typing_prepare_subst_impl(typevartupleobject *self,
+                                       PyObject *alias, PyObject *args)
+/*[clinic end generated code: output=ff999bc5b02036c1 input=685b149b0fc47556]*/
+{
+    PyObject *args_array[3] = {(PyObject *)self, alias, args};
+    PyObject *result = call_typing_func_object(
+        "_typevartuple_prepare_subst", args_array, 3);
+    return result;
+}
+
+/*[clinic input]
+typevartuple.__reduce__ as typevartuple_reduce
+
+[clinic start generated code]*/
+
+static PyObject *
+typevartuple_reduce_impl(typevartupleobject *self)
+/*[clinic end generated code: output=3215bc0477913d20 input=3018a4d66147e807]*/
+{
+    return Py_NewRef(self->name);
+}
+
+static PyObject *
+typevartuple_mro_entries(PyObject *self, PyObject *args)
+{
+    PyErr_SetString(PyExc_TypeError,
+                    "Cannot subclass an instance of TypeVarTuple");
+    return NULL;
+}
+
+static int
+typevartuple_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    PyObject_VisitManagedDict(self, visit, arg);
+    return 0;
+}
+
+static int
+typevartuple_clear(PyObject *self)
+{
+    PyObject_ClearManagedDict(self);
+    return 0;
+}
+
+static PyMethodDef typevartuple_methods[] = {
+    TYPEVARTUPLE_TYPING_SUBST_METHODDEF
+    TYPEVARTUPLE_TYPING_PREPARE_SUBST_METHODDEF
+    TYPEVARTUPLE_REDUCE_METHODDEF
+    {"__mro_entries__", typevartuple_mro_entries, METH_O},
+    {0}
+};
+
+PyDoc_STRVAR(typevartuple_doc,
+"Type variable tuple. A specialized form of type variable that enables\n\
+variadic generics.\n\
+\n\
+The preferred way to construct a type variable tuple is via the\n\
+dedicated syntax for generic functions, classes, and type aliases,\n\
+where a single '*' indicates a type variable tuple::\n\
+\n\
+    def move_first_element_to_last[T, *Ts](tup: tuple[T, *Ts]) -> tuple[*Ts, T]:\n\
+        return (*tup[1:], tup[0])\n\
+\n\
+For compatibility with Python 3.11 and earlier, TypeVarTuple objects\n\
+can also be created as follows::\n\
+\n\
+    Ts = TypeVarTuple('Ts')  # Can be given any name\n\
+\n\
+Just as a TypeVar (type variable) is a placeholder for a single type,\n\
+a TypeVarTuple is a placeholder for an *arbitrary* number of types. For\n\
+example, if we define a generic class using a TypeVarTuple::\n\
+\n\
+    class C[*Ts]: ...\n\
+\n\
+Then we can parameterize that class with an arbitrary number of type\n\
+arguments::\n\
+\n\
+    C[int]       # Fine\n\
+    C[int, str]  # Also fine\n\
+    C[()]        # Even this is fine\n\
+\n\
+For more details, see PEP 646.\n\
+\n\
+Note that only TypeVarTuples defined in the global scope can be\n\
+pickled.\n\
+");
+
+PyType_Slot typevartuple_slots[] = {
+    {Py_tp_doc, (void *)typevartuple_doc},
+    {Py_tp_members, typevartuple_members},
+    {Py_tp_methods, typevartuple_methods},
+    {Py_tp_new, typevartuple},
+    {Py_tp_iter, typevartuple_iter},
+    {Py_tp_repr, typevartuple_repr},
+    {Py_tp_dealloc, typevartuple_dealloc},
+    {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_free, PyObject_GC_Del},
+    {Py_tp_traverse, typevartuple_traverse},
+    {Py_tp_clear, typevartuple_clear},
+    {0, 0},
+};
+
+PyType_Spec typevartuple_spec = {
+    .name = "typing.TypeVarTuple",
+    .basicsize = sizeof(typevartupleobject),
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_MANAGED_DICT
+        | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_MANAGED_WEAKREF,
+    .slots = typevartuple_slots,
+};
+
+PyObject *
+_Py_make_typevar(PyObject *name, PyObject *evaluate_bound, PyObject *evaluate_constraints)
+{
+    return (PyObject *)typevar_alloc(name, NULL, evaluate_bound, NULL, evaluate_constraints,
+                                     false, false, true, NULL);
+}
+
+PyObject *
+_Py_make_paramspec(PyThreadState *Py_UNUSED(ignored), PyObject *v)
+{
+    assert(PyUnicode_Check(v));
+    return (PyObject *)paramspec_alloc(v, NULL, false, false, true, NULL);
+}
+
+PyObject *
+_Py_make_typevartuple(PyThreadState *Py_UNUSED(ignored), PyObject *v)
+{
+    assert(PyUnicode_Check(v));
+    return (PyObject *)typevartuple_alloc(v, NULL);
+}
+
+static void
+typealias_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    _PyObject_GC_UNTRACK(self);
+    typealiasobject *ta = (typealiasobject *)self;
+    Py_DECREF(ta->name);
+    Py_XDECREF(ta->type_params);
+    Py_XDECREF(ta->compute_value);
+    Py_XDECREF(ta->value);
+    Py_XDECREF(ta->module);
+    Py_TYPE(self)->tp_free(self);
+    Py_DECREF(tp);
+}
+
+static PyObject *
+typealias_get_value(typealiasobject *ta)
+{
+    if (ta->value != NULL) {
+        return Py_NewRef(ta->value);
+    }
+    PyObject *result = PyObject_CallNoArgs(ta->compute_value);
+    if (result == NULL) {
+        return NULL;
+    }
+    ta->value = Py_NewRef(result);
+    return result;
+}
+
+static PyObject *
+typealias_repr(PyObject *self)
+{
+    typealiasobject *ta = (typealiasobject *)self;
+    return Py_NewRef(ta->name);
+}
+
+static PyMemberDef typealias_members[] = {
+    {"__name__", _Py_T_OBJECT, offsetof(typealiasobject, name), Py_READONLY},
+    {0}
+};
+
+static PyObject *
+typealias_value(PyObject *self, void *unused)
+{
+    typealiasobject *ta = (typealiasobject *)self;
+    return typealias_get_value(ta);
+}
+
+static PyObject *
+typealias_parameters(PyObject *self, void *unused)
+{
+    typealiasobject *ta = (typealiasobject *)self;
+    if (ta->type_params == NULL) {
+        return PyTuple_New(0);
+    }
+    return unpack_typevartuples(ta->type_params);
+}
+
+static PyObject *
+typealias_type_params(PyObject *self, void *unused)
+{
+    typealiasobject *ta = (typealiasobject *)self;
+    if (ta->type_params == NULL) {
+        return PyTuple_New(0);
+    }
+    return Py_NewRef(ta->type_params);
+}
+
+static PyObject *
+typealias_module(PyObject *self, void *unused)
+{
+    typealiasobject *ta = (typealiasobject *)self;
+    if (ta->module != NULL) {
+        return Py_NewRef(ta->module);
+    }
+    if (ta->compute_value != NULL) {
+        PyObject* mod = PyFunction_GetModule(ta->compute_value);
+        if (mod != NULL) {
+            // PyFunction_GetModule() returns a borrowed reference,
+            // and it may return NULL (e.g., for functions defined
+            // in an exec()'ed block).
+            return Py_NewRef(mod);
+        }
+    }
+    Py_RETURN_NONE;
+}
+
+static PyGetSetDef typealias_getset[] = {
+    {"__parameters__", typealias_parameters, (setter)NULL, NULL, NULL},
+    {"__type_params__", typealias_type_params, (setter)NULL, NULL, NULL},
+    {"__value__", typealias_value, (setter)NULL, NULL, NULL},
+    {"__module__", typealias_module, (setter)NULL, NULL, NULL},
+    {0}
+};
+
+static typealiasobject *
+typealias_alloc(PyObject *name, PyObject *type_params, PyObject *compute_value,
+                PyObject *value, PyObject *module)
+{
+    typealiasobject *ta = PyObject_GC_New(typealiasobject, &_PyTypeAlias_Type);
+    if (ta == NULL) {
+        return NULL;
+    }
+    ta->name = Py_NewRef(name);
+    ta->type_params = Py_IsNone(type_params) ? NULL : Py_XNewRef(type_params);
+    ta->compute_value = Py_XNewRef(compute_value);
+    ta->value = Py_XNewRef(value);
+    ta->module = Py_XNewRef(module);
+    _PyObject_GC_TRACK(ta);
+    return ta;
+}
+
+static int
+typealias_traverse(typealiasobject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(self->type_params);
+    Py_VISIT(self->compute_value);
+    Py_VISIT(self->value);
+    Py_VISIT(self->module);
+    return 0;
+}
+
+static int
+typealias_clear(typealiasobject *self)
+{
+    Py_CLEAR(self->type_params);
+    Py_CLEAR(self->compute_value);
+    Py_CLEAR(self->value);
+    Py_CLEAR(self->module);
+    return 0;
+}
+
+/*[clinic input]
+typealias.__reduce__ as typealias_reduce
+
+[clinic start generated code]*/
+
+static PyObject *
+typealias_reduce_impl(typealiasobject *self)
+/*[clinic end generated code: output=913724f92ad3b39b input=4f06fbd9472ec0f1]*/
+{
+    return Py_NewRef(self->name);
+}
+
+static PyObject *
+typealias_subscript(PyObject *self, PyObject *args)
+{
+    if (((typealiasobject *)self)->type_params == NULL) {
+        PyErr_SetString(PyExc_TypeError,
+                        "Only generic type aliases are subscriptable");
+        return NULL;
+    }
+    return Py_GenericAlias(self, args);
+}
+
+static PyMethodDef typealias_methods[] = {
+    TYPEALIAS_REDUCE_METHODDEF
+    {0}
+};
+
+
+/*[clinic input]
+@classmethod
+typealias.__new__ as typealias_new
+
+    name: object(subclass_of="&PyUnicode_Type")
+    value: object
+    *
+    type_params: object = NULL
+
+Create a TypeAliasType.
+[clinic start generated code]*/
+
+static PyObject *
+typealias_new_impl(PyTypeObject *type, PyObject *name, PyObject *value,
+                   PyObject *type_params)
+/*[clinic end generated code: output=8920ce6bdff86f00 input=df163c34e17e1a35]*/
+{
+    if (type_params != NULL && !PyTuple_Check(type_params)) {
+        PyErr_SetString(PyExc_TypeError, "type_params must be a tuple");
+        return NULL;
+    }
+    PyObject *module = caller();
+    if (module == NULL) {
+        return NULL;
+    }
+    PyObject *ta = (PyObject *)typealias_alloc(name, type_params, NULL, value,
+                                               module);
+    Py_DECREF(module);
+    return ta;
+}
+
+PyDoc_STRVAR(typealias_doc,
+"Type alias.\n\
+\n\
+Type aliases are created through the type statement::\n\
+\n\
+    type Alias = int\n\
+\n\
+In this example, Alias and int will be treated equivalently by static\n\
+type checkers.\n\
+\n\
+At runtime, Alias is an instance of TypeAliasType. The __name__\n\
+attribute holds the name of the type alias. The value of the type alias\n\
+is stored in the __value__ attribute. It is evaluated lazily, so the\n\
+value is computed only if the attribute is accessed.\n\
+\n\
+Type aliases can also be generic::\n\
+\n\
+    type ListOrSet[T] = list[T] | set[T]\n\
+\n\
+In this case, the type parameters of the alias are stored in the\n\
+__type_params__ attribute.\n\
+\n\
+See PEP 695 for more information.\n\
+");
+
+static PyNumberMethods typealias_as_number = {
+    .nb_or = _Py_union_type_or,
+};
+
+static PyMappingMethods typealias_as_mapping = {
+    .mp_subscript = typealias_subscript,
+};
+
+PyTypeObject _PyTypeAlias_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    .tp_name = "typing.TypeAliasType",
+    .tp_basicsize = sizeof(typealiasobject),
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_HAVE_GC,
+    .tp_doc = typealias_doc,
+    .tp_members = typealias_members,
+    .tp_methods = typealias_methods,
+    .tp_getset = typealias_getset,
+    .tp_alloc = PyType_GenericAlloc,
+    .tp_dealloc = typealias_dealloc,
+    .tp_new = typealias_new,
+    .tp_free = PyObject_GC_Del,
+    .tp_traverse = (traverseproc)typealias_traverse,
+    .tp_clear = (inquiry)typealias_clear,
+    .tp_repr = typealias_repr,
+    .tp_as_number = &typealias_as_number,
+    .tp_as_mapping = &typealias_as_mapping,
+};
+
+PyObject *
+_Py_make_typealias(PyThreadState* unused, PyObject *args)
+{
+    assert(PyTuple_Check(args));
+    assert(PyTuple_GET_SIZE(args) == 3);
+    PyObject *name = PyTuple_GET_ITEM(args, 0);
+    assert(PyUnicode_Check(name));
+    PyObject *type_params = PyTuple_GET_ITEM(args, 1);
+    PyObject *compute_value = PyTuple_GET_ITEM(args, 2);
+    assert(PyFunction_Check(compute_value));
+    return (PyObject *)typealias_alloc(name, type_params, compute_value, NULL, NULL);
+}
+
+PyDoc_STRVAR(generic_doc,
+"Abstract base class for generic types.\n\
+\n\
+On Python 3.12 and newer, generic classes implicitly inherit from\n\
+Generic when they declare a parameter list after the class's name::\n\
+\n\
+    class Mapping[KT, VT]:\n\
+        def __getitem__(self, key: KT) -> VT:\n\
+            ...\n\
+        # Etc.\n\
+\n\
+On older versions of Python, however, generic classes have to\n\
+explicitly inherit from Generic.\n\
+\n\
+After a class has been declared to be generic, it can then be used as\n\
+follows::\n\
+\n\
+    def lookup_name[KT, VT](mapping: Mapping[KT, VT], key: KT, default: VT) -> VT:\n\
+        try:\n\
+            return mapping[key]\n\
+        except KeyError:\n\
+            return default\n\
+");
+
+PyDoc_STRVAR(generic_class_getitem_doc,
+"Parameterizes a generic class.\n\
+\n\
+At least, parameterizing a generic class is the *main* thing this\n\
+method does. For example, for some generic class `Foo`, this is called\n\
+when we do `Foo[int]` - there, with `cls=Foo` and `params=int`.\n\
+\n\
+However, note that this method is also called when defining generic\n\
+classes in the first place with `class Foo[T]: ...`.\n\
+");
+
+static PyObject *
+call_typing_args_kwargs(const char *name, PyTypeObject *cls, PyObject *args, PyObject *kwargs)
+{
+    PyObject *typing = NULL, *func = NULL, *new_args = NULL;
+    typing = PyImport_ImportModule("typing");
+    if (typing == NULL) {
+        goto error;
+    }
+    func = PyObject_GetAttrString(typing, name);
+    if (func == NULL) {
+        goto error;
+    }
+    assert(PyTuple_Check(args));
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    new_args = PyTuple_New(nargs + 1);
+    if (new_args == NULL) {
+        goto error;
+    }
+    PyTuple_SET_ITEM(new_args, 0, Py_NewRef((PyObject *)cls));
+    for (Py_ssize_t i = 0; i < nargs; i++) {
+        PyObject *arg = PyTuple_GET_ITEM(args, i);
+        PyTuple_SET_ITEM(new_args, i + 1, Py_NewRef(arg));
+    }
+    PyObject *result = PyObject_Call(func, new_args, kwargs);
+    Py_DECREF(typing);
+    Py_DECREF(func);
+    Py_DECREF(new_args);
+    return result;
+error:
+    Py_XDECREF(typing);
+    Py_XDECREF(func);
+    Py_XDECREF(new_args);
+    return NULL;
+}
+
+static PyObject *
+generic_init_subclass(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
+{
+    return call_typing_args_kwargs("_generic_init_subclass", cls, args, kwargs);
+}
+
+static PyObject *
+generic_class_getitem(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
+{
+    return call_typing_args_kwargs("_generic_class_getitem", cls, args, kwargs);
+}
+
+PyObject *
+_Py_subscript_generic(PyThreadState* unused, PyObject *params)
+{
+    params = unpack_typevartuples(params);
+
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (interp->cached_objects.generic_type == NULL) {
+        PyErr_SetString(PyExc_SystemError, "Cannot find Generic type");
+        return NULL;
+    }
+    PyObject *args[2] = {(PyObject *)interp->cached_objects.generic_type, params};
+    PyObject *result = call_typing_func_object("_GenericAlias", args, 2);
+    Py_DECREF(params);
+    return result;
+}
+
+static PyMethodDef generic_methods[] = {
+    {"__class_getitem__", (PyCFunction)(void (*)(void))generic_class_getitem,
+     METH_VARARGS | METH_KEYWORDS | METH_CLASS,
+     generic_class_getitem_doc},
+    {"__init_subclass__", (PyCFunction)(void (*)(void))generic_init_subclass,
+     METH_VARARGS | METH_KEYWORDS | METH_CLASS,
+     PyDoc_STR("Function to initialize subclasses.")},
+    {NULL} /* Sentinel */
+};
+
+static void
+generic_dealloc(PyObject *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    _PyObject_GC_UNTRACK(self);
+    Py_TYPE(self)->tp_free(self);
+    Py_DECREF(tp);
+}
+
+static int
+generic_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    return 0;
+}
+
+static PyType_Slot generic_slots[] = {
+    {Py_tp_doc, (void *)generic_doc},
+    {Py_tp_methods, generic_methods},
+    {Py_tp_dealloc, generic_dealloc},
+    {Py_tp_alloc, PyType_GenericAlloc},
+    {Py_tp_free, PyObject_GC_Del},
+    {Py_tp_traverse, generic_traverse},
+    {0, NULL},
+};
+
+PyType_Spec generic_spec = {
+    .name = "typing.Generic",
+    .basicsize = sizeof(PyObject),
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
+    .slots = generic_slots,
+};
+
+int _Py_initialize_generic(PyInterpreterState *interp)
+{
+#define MAKE_TYPE(name) \
+    do { \
+        PyTypeObject *name ## _type = (PyTypeObject *)PyType_FromSpec(&name ## _spec); \
+        if (name ## _type == NULL) { \
+            return -1; \
+        } \
+        interp->cached_objects.name ## _type = name ## _type; \
+    } while(0)
+
+    MAKE_TYPE(generic);
+    MAKE_TYPE(typevar);
+    MAKE_TYPE(typevartuple);
+    MAKE_TYPE(paramspec);
+    MAKE_TYPE(paramspecargs);
+    MAKE_TYPE(paramspeckwargs);
+#undef MAKE_TYPE
+    return 0;
+}
+
+void _Py_clear_generic_types(PyInterpreterState *interp)
+{
+    Py_CLEAR(interp->cached_objects.generic_type);
+    Py_CLEAR(interp->cached_objects.typevar_type);
+    Py_CLEAR(interp->cached_objects.typevartuple_type);
+    Py_CLEAR(interp->cached_objects.paramspec_type);
+    Py_CLEAR(interp->cached_objects.paramspecargs_type);
+    Py_CLEAR(interp->cached_objects.paramspeckwargs_type);
+}
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 7726f2fb17afde..836e14fd5d5dea 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -38,24 +38,27 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
-#include "pycore_atomic_funcs.h"  // _Py_atomic_size_get()
-#include "pycore_bytesobject.h"   // _PyBytes_Repeat()
 #include "pycore_bytes_methods.h" // _Py_bytes_lower()
+#include "pycore_bytesobject.h"   // _PyBytes_Repeat()
+#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
+#include "pycore_codecs.h"        // _PyCodec_Lookup()
 #include "pycore_format.h"        // F_LJUST
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_interp.h"        // PyInterpreterState.fs_codec
 #include "pycore_long.h"          // _PyLong_FormatWriter()
 #include "pycore_object.h"        // _PyObject_GC_TRACK(), _Py_FatalRefcountError()
 #include "pycore_pathconfig.h"    // _Py_DumpPathConfig()
+#include "pycore_pyerrors.h"      // _PyUnicodeTranslateError_Create()
 #include "pycore_pylifecycle.h"   // _Py_SetFileSystemEncoding()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_ucnhash.h"       // _PyUnicode_Name_CAPI
 #include "pycore_unicodeobject.h" // struct _Py_unicode_state
 #include "pycore_unicodeobject_generated.h"  // _PyUnicode_InitStaticStrings()
+
 #include "stringlib/eq.h"         // unicode_eq()
+#include <stddef.h>               // ptrdiff_t
 
 #ifdef MS_WINDOWS
 #include <windows.h>
@@ -97,11 +100,6 @@ NOTE: In the interpreter's initialization phase, some globals are currently
 
 */
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 // Maximum code point of Unicode 6.0: 0x10ffff (1,114,111).
 // The value must be the same in fileutils.c.
 #define MAX_UNICODE 0x10ffff
@@ -209,21 +207,13 @@ static int unicode_is_singleton(PyObject *unicode);
 #endif
 
 
-// Return a borrowed reference to the empty string singleton.
+// Return a reference to the immortal empty string singleton.
 static inline PyObject* unicode_get_empty(void)
 {
     _Py_DECLARE_STR(empty, "");
     return &_Py_STR(empty);
 }
 
-
-// Return a strong reference to the empty string singleton.
-static inline PyObject* unicode_new_empty(void)
-{
-    PyObject *empty = unicode_get_empty();
-    return Py_NewRef(empty);
-}
-
 /* This dictionary holds all interned unicode strings.  Note that references
    to strings in this dictionary are *not* counted in the string's ob_refcnt.
    When the interned string reaches a refcnt of 0 the string deallocation
@@ -234,15 +224,54 @@ static inline PyObject *get_interned_dict(PyInterpreterState *interp)
     return _Py_INTERP_CACHED_OBJECT(interp, interned_strings);
 }
 
+#define INTERNED_STRINGS _PyRuntime.cached_objects.interned_strings
+
 Py_ssize_t
-_PyUnicode_InternedSize()
+_PyUnicode_InternedSize(void)
+{
+    PyObject *dict = get_interned_dict(_PyInterpreterState_GET());
+    return _Py_hashtable_len(INTERNED_STRINGS) + PyDict_GET_SIZE(dict);
+}
+
+static Py_hash_t unicode_hash(PyObject *);
+static int unicode_compare_eq(PyObject *, PyObject *);
+
+static Py_uhash_t
+hashtable_unicode_hash(const void *key)
 {
-    return PyObject_Length(get_interned_dict(_PyInterpreterState_GET()));
+    return unicode_hash((PyObject *)key);
+}
+
+static int
+hashtable_unicode_compare(const void *key1, const void *key2)
+{
+    PyObject *obj1 = (PyObject *)key1;
+    PyObject *obj2 = (PyObject *)key2;
+    if (obj1 != NULL && obj2 != NULL) {
+        return unicode_compare_eq(obj1, obj2);
+    }
+    else {
+        return obj1 == obj2;
+    }
 }
 
 static int
 init_interned_dict(PyInterpreterState *interp)
 {
+    if (_Py_IsMainInterpreter(interp)) {
+        assert(INTERNED_STRINGS == NULL);
+        _Py_hashtable_allocator_t hashtable_alloc = {PyMem_RawMalloc, PyMem_RawFree};
+        INTERNED_STRINGS = _Py_hashtable_new_full(
+            hashtable_unicode_hash,
+            hashtable_unicode_compare,
+            NULL,
+            NULL,
+            &hashtable_alloc
+        );
+        if (INTERNED_STRINGS == NULL) {
+            return -1;
+        }
+    }
     assert(get_interned_dict(interp) == NULL);
     PyObject *interned = interned = PyDict_New();
     if (interned == NULL) {
@@ -261,11 +290,15 @@ clear_interned_dict(PyInterpreterState *interp)
         Py_DECREF(interned);
         _Py_INTERP_CACHED_OBJECT(interp, interned_strings) = NULL;
     }
+    if (_Py_IsMainInterpreter(interp) && INTERNED_STRINGS != NULL) {
+        _Py_hashtable_destroy(INTERNED_STRINGS);
+        INTERNED_STRINGS = NULL;
+    }
 }
 
 #define _Py_RETURN_UNICODE_EMPTY()   \
     do {                             \
-        return unicode_new_empty();  \
+        return unicode_get_empty();  \
     } while (0)
 
 static inline void
@@ -605,7 +638,6 @@ unicode_result(PyObject *unicode)
         PyObject *empty = unicode_get_empty();
         if (unicode != empty) {
             Py_DECREF(unicode);
-            Py_INCREF(empty);
         }
         return empty;
     }
@@ -617,7 +649,6 @@ unicode_result(PyObject *unicode)
             Py_UCS1 ch = data[0];
             PyObject *latin1_char = LATIN1(ch);
             if (unicode != latin1_char) {
-                Py_INCREF(latin1_char);
                 Py_DECREF(unicode);
             }
             return latin1_char;
@@ -1154,7 +1185,7 @@ PyUnicode_New(Py_ssize_t size, Py_UCS4 maxchar)
 {
     /* Optimization for empty strings */
     if (size == 0) {
-        return unicode_new_empty();
+        return unicode_get_empty();
     }
 
     PyObject *obj;
@@ -1221,6 +1252,7 @@ PyUnicode_New(Py_ssize_t size, Py_UCS4 maxchar)
     _PyUnicode_STATE(unicode).kind = kind;
     _PyUnicode_STATE(unicode).compact = 1;
     _PyUnicode_STATE(unicode).ascii = is_ascii;
+    _PyUnicode_STATE(unicode).statically_allocated = 0;
     if (is_ascii) {
         ((char*)data)[size] = 0;
     }
@@ -1551,7 +1583,9 @@ unicode_dealloc(PyObject *unicode)
      * we accidentally decref an immortal string out of existence. Since
      * the string is an immortal object, just re-set the reference count.
      */
-    if (PyUnicode_CHECK_INTERNED(unicode)) {
+    if (PyUnicode_CHECK_INTERNED(unicode)
+        || _PyUnicode_STATE(unicode).statically_allocated)
+    {
         _Py_SetImmortal(unicode);
         return;
     }
@@ -1621,7 +1655,7 @@ unicode_resize(PyObject **p_unicode, Py_ssize_t length)
         return 0;
 
     if (length == 0) {
-        PyObject *empty = unicode_new_empty();
+        PyObject *empty = unicode_get_empty();
         Py_SETREF(*p_unicode, empty);
         return 0;
     }
@@ -1716,7 +1750,9 @@ unicode_write_cstr(PyObject *unicode, Py_ssize_t index,
 static PyObject*
 get_latin1_char(Py_UCS1 ch)
 {
-    return Py_NewRef(LATIN1(ch));
+    PyObject *o = LATIN1(ch);
+    assert(_Py_IsImmortal(o));
+    return o;
 }
 
 static PyObject*
@@ -1799,14 +1835,14 @@ PyUnicode_FromWideChar(const wchar_t *u, Py_ssize_t size)
 
     switch (PyUnicode_KIND(unicode)) {
     case PyUnicode_1BYTE_KIND:
-        _PyUnicode_CONVERT_BYTES(Py_UNICODE, unsigned char,
+        _PyUnicode_CONVERT_BYTES(wchar_t, unsigned char,
                                 u, u + size, PyUnicode_1BYTE_DATA(unicode));
         break;
     case PyUnicode_2BYTE_KIND:
 #if Py_UNICODE_SIZE == 2
         memcpy(PyUnicode_2BYTE_DATA(unicode), u, size * 2);
 #else
-        _PyUnicode_CONVERT_BYTES(Py_UNICODE, Py_UCS2,
+        _PyUnicode_CONVERT_BYTES(wchar_t, Py_UCS2,
                                 u, u + size, PyUnicode_2BYTE_DATA(unicode));
 #endif
         break;
@@ -1843,7 +1879,7 @@ PyUnicode_FromStringAndSize(const char *u, Py_ssize_t size)
             "NULL string with positive size with NULL passed to PyUnicode_FromStringAndSize");
         return NULL;
     }
-    return unicode_new_empty();
+    return unicode_get_empty();
 }
 
 PyObject *
@@ -1864,21 +1900,21 @@ _PyUnicode_FromId(_Py_Identifier *id)
     PyInterpreterState *interp = _PyInterpreterState_GET();
     struct _Py_unicode_ids *ids = &interp->unicode.ids;
 
-    Py_ssize_t index = _Py_atomic_size_get(&id->index);
+    Py_ssize_t index = _Py_atomic_load_ssize(&id->index);
     if (index < 0) {
         struct _Py_unicode_runtime_ids *rt_ids = &interp->runtime->unicode_state.ids;
 
-        PyThread_acquire_lock(rt_ids->lock, WAIT_LOCK);
+        PyMutex_Lock(&rt_ids->mutex);
         // Check again to detect concurrent access. Another thread can have
         // initialized the index while this thread waited for the lock.
-        index = _Py_atomic_size_get(&id->index);
+        index = _Py_atomic_load_ssize(&id->index);
         if (index < 0) {
             assert(rt_ids->next_index < PY_SSIZE_T_MAX);
             index = rt_ids->next_index;
             rt_ids->next_index++;
-            _Py_atomic_size_set(&id->index, index);
+            _Py_atomic_store_ssize(&id->index, index);
         }
-        PyThread_release_lock(rt_ids->lock);
+        PyMutex_Unlock(&rt_ids->mutex);
     }
     assert(index >= 0);
 
@@ -2285,14 +2321,15 @@ PyUnicode_AsUCS4Copy(PyObject *string)
     return as_ucs4(string, NULL, 0, 1);
 }
 
-/* maximum number of characters required for output of %lld or %p.
-   We need at most ceil(log10(256)*SIZEOF_LONG_LONG) digits,
-   plus 1 for the sign.  53/22 is an upper bound for log10(256). */
-#define MAX_LONG_LONG_CHARS (2 + (SIZEOF_LONG_LONG*53-1) / 22)
+/* maximum number of characters required for output of %jo or %jd or %p.
+   We need at most ceil(log8(256)*sizeof(intmax_t)) digits,
+   plus 1 for the sign, plus 2 for the 0x prefix (for %p),
+   plus 1 for the terminal NUL. */
+#define MAX_INTMAX_CHARS (5 + (sizeof(intmax_t)*8-1) / 3)
 
 static int
 unicode_fromformat_write_str(_PyUnicodeWriter *writer, PyObject *str,
-                             Py_ssize_t width, Py_ssize_t precision)
+                             Py_ssize_t width, Py_ssize_t precision, int flags)
 {
     Py_ssize_t length, fill, arglen;
     Py_UCS4 maxchar;
@@ -2314,8 +2351,8 @@ unicode_fromformat_write_str(_PyUnicodeWriter *writer, PyObject *str,
     if (_PyUnicodeWriter_Prepare(writer, arglen, maxchar) == -1)
         return -1;
 
-    if (width > length) {
-        fill = width - length;
+    fill = Py_MAX(width - length, 0);
+    if (fill && !(flags & F_LJUST)) {
         if (PyUnicode_Fill(writer->buffer, writer->pos, fill, ' ') == -1)
             return -1;
         writer->pos += fill;
@@ -2324,12 +2361,19 @@ unicode_fromformat_write_str(_PyUnicodeWriter *writer, PyObject *str,
     _PyUnicode_FastCopyCharacters(writer->buffer, writer->pos,
                                   str, 0, length);
     writer->pos += length;
+
+    if (fill && (flags & F_LJUST)) {
+        if (PyUnicode_Fill(writer->buffer, writer->pos, fill, ' ') == -1)
+            return -1;
+        writer->pos += fill;
+    }
+
     return 0;
 }
 
 static int
 unicode_fromformat_write_cstr(_PyUnicodeWriter *writer, const char *str,
-                              Py_ssize_t width, Py_ssize_t precision)
+                              Py_ssize_t width, Py_ssize_t precision, int flags)
 {
     /* UTF-8 */
     Py_ssize_t length;
@@ -2349,24 +2393,58 @@ unicode_fromformat_write_cstr(_PyUnicodeWriter *writer, const char *str,
     if (unicode == NULL)
         return -1;
 
-    res = unicode_fromformat_write_str(writer, unicode, width, -1);
+    res = unicode_fromformat_write_str(writer, unicode, width, -1, flags);
+    Py_DECREF(unicode);
+    return res;
+}
+
+static int
+unicode_fromformat_write_wcstr(_PyUnicodeWriter *writer, const wchar_t *str,
+                              Py_ssize_t width, Py_ssize_t precision, int flags)
+{
+    /* UTF-8 */
+    Py_ssize_t length;
+    PyObject *unicode;
+    int res;
+
+    if (precision == -1) {
+        length = wcslen(str);
+    }
+    else {
+        length = 0;
+        while (length < precision && str[length]) {
+            length++;
+        }
+    }
+    unicode = PyUnicode_FromWideChar(str, length);
+    if (unicode == NULL)
+        return -1;
+
+    res = unicode_fromformat_write_str(writer, unicode, width, -1, flags);
     Py_DECREF(unicode);
     return res;
 }
 
+#define F_LONG 1
+#define F_LONGLONG 2
+#define F_SIZE 3
+#define F_PTRDIFF 4
+#define F_INTMAX 5
+static const char * const formats[] = {"%d", "%ld", "%lld", "%zd", "%td", "%jd"};
+static const char * const formats_o[] = {"%o", "%lo", "%llo", "%zo", "%to", "%jo"};
+static const char * const formats_u[] = {"%u", "%lu", "%llu", "%zu", "%tu", "%ju"};
+static const char * const formats_x[] = {"%x", "%lx", "%llx", "%zx", "%tx", "%jx"};
+static const char * const formats_X[] = {"%X", "%lX", "%llX", "%zX", "%tX", "%jX"};
+
 static const char*
 unicode_fromformat_arg(_PyUnicodeWriter *writer,
                        const char *f, va_list *vargs)
 {
     const char *p;
     Py_ssize_t len;
-    int zeropad;
+    int flags = 0;
     Py_ssize_t width;
     Py_ssize_t precision;
-    int longflag;
-    int longlongflag;
-    int size_tflag;
-    Py_ssize_t fill;
 
     p = f;
     f++;
@@ -2377,15 +2455,31 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         return f;
     }
 
-    zeropad = 0;
-    if (*f == '0') {
-        zeropad = 1;
-        f++;
+    /* Parse flags. Example: "%-i" => flags=F_LJUST. */
+    /* Flags '+', ' ' and '#' are not particularly useful.
+     * They are not worth the implementation and maintenance costs.
+     * In addition, '#' should add "0" for "o" conversions for compatibility
+     * with printf, but it would confuse Python users. */
+    while (1) {
+        switch (*f++) {
+        case '-': flags |= F_LJUST; continue;
+        case '0': flags |= F_ZERO; continue;
+        }
+        f--;
+        break;
     }
 
     /* parse the width.precision part, e.g. "%2.5s" => width=2, precision=5 */
     width = -1;
-    if (Py_ISDIGIT((unsigned)*f)) {
+    if (*f == '*') {
+        width = va_arg(*vargs, int);
+        if (width < 0) {
+            flags |= F_LJUST;
+            width = -width;
+        }
+        f++;
+    }
+    else if (Py_ISDIGIT((unsigned)*f)) {
         width = *f - '0';
         f++;
         while (Py_ISDIGIT((unsigned)*f)) {
@@ -2401,7 +2495,14 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
     precision = -1;
     if (*f == '.') {
         f++;
-        if (Py_ISDIGIT((unsigned)*f)) {
+        if (*f == '*') {
+            precision = va_arg(*vargs, int);
+            if (precision < 0) {
+                precision = -2;
+            }
+            f++;
+        }
+        else if (Py_ISDIGIT((unsigned)*f)) {
             precision = (*f - '0');
             f++;
             while (Py_ISDIGIT((unsigned)*f)) {
@@ -2416,30 +2517,47 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         }
     }
 
-    /* Handle %ld, %lu, %lld and %llu. */
-    longflag = 0;
-    longlongflag = 0;
-    size_tflag = 0;
+    int sizemod = 0;
     if (*f == 'l') {
-        if (f[1] == 'd' || f[1] == 'u' || f[1] == 'i') {
-            longflag = 1;
-            ++f;
-        }
-        else if (f[1] == 'l' &&
-                 (f[2] == 'd' || f[2] == 'u' || f[2] == 'i')) {
-            longlongflag = 1;
+        if (f[1] == 'l') {
+            sizemod = F_LONGLONG;
             f += 2;
         }
+        else {
+            sizemod = F_LONG;
+            ++f;
+        }
     }
-    /* handle the size_t flag. */
-    else if (*f == 'z' && (f[1] == 'd' || f[1] == 'u' || f[1] == 'i')) {
-        size_tflag = 1;
+    else if (*f == 'z') {
+        sizemod = F_SIZE;
+        ++f;
+    }
+    else if (*f == 't') {
+        sizemod = F_PTRDIFF;
+        ++f;
+    }
+    else if (*f == 'j') {
+        sizemod = F_INTMAX;
         ++f;
     }
-
     if (f[0] != '\0' && f[1] == '\0')
         writer->overallocate = 0;
 
+    switch (*f) {
+    case 'd': case 'i': case 'o': case 'u': case 'x': case 'X':
+        break;
+    case 'c': case 'p':
+        if (sizemod || width >= 0 || precision >= 0) goto invalid_format;
+        break;
+    case 's':
+    case 'V':
+        if (sizemod && sizemod != F_LONG) goto invalid_format;
+        break;
+    default:
+        if (sizemod) goto invalid_format;
+        break;
+    }
+
     switch (*f) {
     case 'c':
     {
@@ -2454,91 +2572,98 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         break;
     }
 
-    case 'i':
-    case 'd':
-    case 'u':
-    case 'x':
+    case 'd': case 'i':
+    case 'o': case 'u': case 'x': case 'X':
     {
         /* used by sprintf */
-        char buffer[MAX_LONG_LONG_CHARS];
-        Py_ssize_t arglen;
-
-        if (*f == 'u') {
-            if (longflag) {
-                len = sprintf(buffer, "%lu", va_arg(*vargs, unsigned long));
-            }
-            else if (longlongflag) {
-                len = sprintf(buffer, "%llu", va_arg(*vargs, unsigned long long));
-            }
-            else if (size_tflag) {
-                len = sprintf(buffer, "%zu", va_arg(*vargs, size_t));
-            }
-            else {
-                len = sprintf(buffer, "%u", va_arg(*vargs, unsigned int));
-            }
-        }
-        else if (*f == 'x') {
-            len = sprintf(buffer, "%x", va_arg(*vargs, int));
-        }
-        else {
-            if (longflag) {
-                len = sprintf(buffer, "%li", va_arg(*vargs, long));
-            }
-            else if (longlongflag) {
-                len = sprintf(buffer, "%lli", va_arg(*vargs, long long));
-            }
-            else if (size_tflag) {
-                len = sprintf(buffer, "%zi", va_arg(*vargs, Py_ssize_t));
-            }
-            else {
-                len = sprintf(buffer, "%i", va_arg(*vargs, int));
-            }
+        char buffer[MAX_INTMAX_CHARS];
+        const char *fmt = NULL;
+        switch (*f) {
+            case 'o': fmt = formats_o[sizemod]; break;
+            case 'u': fmt = formats_u[sizemod]; break;
+            case 'x': fmt = formats_x[sizemod]; break;
+            case 'X': fmt = formats_X[sizemod]; break;
+            default: fmt = formats[sizemod]; break;
+        }
+        int issigned = (*f == 'd' || *f == 'i');
+        switch (sizemod) {
+            case F_LONG:
+                len = issigned ?
+                    sprintf(buffer, fmt, va_arg(*vargs, long)) :
+                    sprintf(buffer, fmt, va_arg(*vargs, unsigned long));
+                break;
+            case F_LONGLONG:
+                len = issigned ?
+                    sprintf(buffer, fmt, va_arg(*vargs, long long)) :
+                    sprintf(buffer, fmt, va_arg(*vargs, unsigned long long));
+                break;
+            case F_SIZE:
+                len = issigned ?
+                    sprintf(buffer, fmt, va_arg(*vargs, Py_ssize_t)) :
+                    sprintf(buffer, fmt, va_arg(*vargs, size_t));
+                break;
+            case F_PTRDIFF:
+                len = sprintf(buffer, fmt, va_arg(*vargs, ptrdiff_t));
+                break;
+            case F_INTMAX:
+                len = issigned ?
+                    sprintf(buffer, fmt, va_arg(*vargs, intmax_t)) :
+                    sprintf(buffer, fmt, va_arg(*vargs, uintmax_t));
+                break;
+            default:
+                len = issigned ?
+                    sprintf(buffer, fmt, va_arg(*vargs, int)) :
+                    sprintf(buffer, fmt, va_arg(*vargs, unsigned int));
+                break;
         }
         assert(len >= 0);
 
-        int negative = (buffer[0] == '-');
-        len -= negative;
+        int sign = (buffer[0] == '-');
+        len -= sign;
 
         precision = Py_MAX(precision, len);
-        width = Py_MAX(width, precision + negative);
+        width = Py_MAX(width, precision + sign);
+        if ((flags & F_ZERO) && !(flags & F_LJUST)) {
+            precision = width - sign;
+        }
 
-        arglen = Py_MAX(precision, width);
-        if (_PyUnicodeWriter_Prepare(writer, arglen, 127) == -1)
-            return NULL;
+        Py_ssize_t spacepad = Py_MAX(width - precision - sign, 0);
+        Py_ssize_t zeropad = Py_MAX(precision - len, 0);
 
-        if (width > precision) {
-            if (negative && zeropad) {
-                if (_PyUnicodeWriter_WriteChar(writer, '-') == -1)
-                    return NULL;
-            }
+        if (_PyUnicodeWriter_Prepare(writer, width, 127) == -1)
+            return NULL;
 
-            Py_UCS4 fillchar = zeropad?'0':' ';
-            fill = width - precision - negative;
-            if (PyUnicode_Fill(writer->buffer, writer->pos, fill, fillchar) == -1)
+        if (spacepad && !(flags & F_LJUST)) {
+            if (PyUnicode_Fill(writer->buffer, writer->pos, spacepad, ' ') == -1)
                 return NULL;
-            writer->pos += fill;
+            writer->pos += spacepad;
+        }
 
-            if (negative && !zeropad) {
-                if (_PyUnicodeWriter_WriteChar(writer, '-') == -1)
-                    return NULL;
-            }
+        if (sign) {
+            if (_PyUnicodeWriter_WriteChar(writer, '-') == -1)
+                return NULL;
         }
 
-        if (precision > len) {
-            fill = precision - len;
-            if (PyUnicode_Fill(writer->buffer, writer->pos, fill, '0') == -1)
+        if (zeropad) {
+            if (PyUnicode_Fill(writer->buffer, writer->pos, zeropad, '0') == -1)
                 return NULL;
-            writer->pos += fill;
+            writer->pos += zeropad;
         }
 
-        if (_PyUnicodeWriter_WriteASCIIString(writer, &buffer[negative], len) < 0)
+        if (_PyUnicodeWriter_WriteASCIIString(writer, &buffer[sign], len) < 0)
             return NULL;
+
+        if (spacepad && (flags & F_LJUST)) {
+            if (PyUnicode_Fill(writer->buffer, writer->pos, spacepad, ' ') == -1)
+                return NULL;
+            writer->pos += spacepad;
+        }
         break;
     }
 
     case 'p':
     {
-        char number[MAX_LONG_LONG_CHARS];
+        char number[MAX_INTMAX_CHARS];
 
         len = sprintf(number, "%p", va_arg(*vargs, void*));
         assert(len >= 0);
@@ -2561,10 +2686,17 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
 
     case 's':
     {
-        /* UTF-8 */
-        const char *s = va_arg(*vargs, const char*);
-        if (unicode_fromformat_write_cstr(writer, s, width, precision) < 0)
-            return NULL;
+        if (sizemod) {
+            const wchar_t *s = va_arg(*vargs, const wchar_t*);
+            if (unicode_fromformat_write_wcstr(writer, s, width, precision, flags) < 0)
+                return NULL;
+        }
+        else {
+            /* UTF-8 */
+            const char *s = va_arg(*vargs, const char*);
+            if (unicode_fromformat_write_cstr(writer, s, width, precision, flags) < 0)
+                return NULL;
+        }
         break;
     }
 
@@ -2573,7 +2705,7 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         PyObject *obj = va_arg(*vargs, PyObject *);
         assert(obj && _PyUnicode_CHECK(obj));
 
-        if (unicode_fromformat_write_str(writer, obj, width, precision) == -1)
+        if (unicode_fromformat_write_str(writer, obj, width, precision, flags) == -1)
             return NULL;
         break;
     }
@@ -2581,15 +2713,27 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
     case 'V':
     {
         PyObject *obj = va_arg(*vargs, PyObject *);
-        const char *str = va_arg(*vargs, const char *);
+        const char *str;
+        const wchar_t *wstr;
+        if (sizemod) {
+            wstr = va_arg(*vargs, const wchar_t*);
+        }
+        else {
+            str = va_arg(*vargs, const char *);
+        }
         if (obj) {
             assert(_PyUnicode_CHECK(obj));
-            if (unicode_fromformat_write_str(writer, obj, width, precision) == -1)
+            if (unicode_fromformat_write_str(writer, obj, width, precision, flags) == -1)
+                return NULL;
+        }
+        else if (sizemod) {
+            assert(wstr != NULL);
+            if (unicode_fromformat_write_wcstr(writer, wstr, width, precision, flags) < 0)
                 return NULL;
         }
         else {
             assert(str != NULL);
-            if (unicode_fromformat_write_cstr(writer, str, width, precision) < 0)
+            if (unicode_fromformat_write_cstr(writer, str, width, precision, flags) < 0)
                 return NULL;
         }
         break;
@@ -2603,7 +2747,7 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         str = PyObject_Str(obj);
         if (!str)
             return NULL;
-        if (unicode_fromformat_write_str(writer, str, width, precision) == -1) {
+        if (unicode_fromformat_write_str(writer, str, width, precision, flags) == -1) {
             Py_DECREF(str);
             return NULL;
         }
@@ -2619,7 +2763,7 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         repr = PyObject_Repr(obj);
         if (!repr)
             return NULL;
-        if (unicode_fromformat_write_str(writer, repr, width, precision) == -1) {
+        if (unicode_fromformat_write_str(writer, repr, width, precision, flags) == -1) {
             Py_DECREF(repr);
             return NULL;
         }
@@ -2635,7 +2779,7 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
         ascii = PyObject_ASCII(obj);
         if (!ascii)
             return NULL;
-        if (unicode_fromformat_write_str(writer, ascii, width, precision) == -1) {
+        if (unicode_fromformat_write_str(writer, ascii, width, precision, flags) == -1) {
             Py_DECREF(ascii);
             return NULL;
         }
@@ -2644,6 +2788,7 @@ unicode_fromformat_arg(_PyUnicodeWriter *writer,
     }
 
     default:
+    invalid_format:
         PyErr_Format(PyExc_SystemError, "invalid format string: %s", p);
         return NULL;
     }
@@ -3675,17 +3820,24 @@ PyUnicode_AsUTF8AndSize(PyObject *unicode, Py_ssize_t *psize)
 {
     if (!PyUnicode_Check(unicode)) {
         PyErr_BadArgument();
+        if (psize) {
+            *psize = -1;
+        }
         return NULL;
     }
 
     if (PyUnicode_UTF8(unicode) == NULL) {
         if (unicode_fill_utf8(unicode) == -1) {
+            if (psize) {
+                *psize = -1;
+            }
             return NULL;
         }
     }
 
-    if (psize)
+    if (psize) {
         *psize = PyUnicode_UTF8_LENGTH(unicode);
+    }
     return PyUnicode_UTF8(unicode);
 }
 
@@ -3695,13 +3847,25 @@ PyUnicode_AsUTF8(PyObject *unicode)
     return PyUnicode_AsUTF8AndSize(unicode, NULL);
 }
 
+const char *
+_PyUnicode_AsUTF8NoNUL(PyObject *unicode)
+{
+    Py_ssize_t size;
+    const char *s = PyUnicode_AsUTF8AndSize(unicode, &size);
+    if (s && strlen(s) != (size_t)size) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        return NULL;
+    }
+    return s;
+}
+
 /*
 PyUnicode_GetSize() has been deprecated since Python 3.3
 because it returned length of Py_UNICODE.
 
-But this function is part of stable abi, because it don't
+But this function is part of stable abi, because it doesn't
 include Py_UNICODE in signature and it was not excluded from
-stable abi in PEP 384.
+stable ABI in PEP 384.
 */
 PyAPI_FUNC(Py_ssize_t)
 PyUnicode_GetSize(PyObject *unicode)
@@ -5705,6 +5869,23 @@ PyUnicode_AsUTF16String(PyObject *unicode)
     return _PyUnicode_EncodeUTF16(unicode, NULL, 0);
 }
 
+_PyUnicode_Name_CAPI *
+_PyUnicode_GetNameCAPI(void)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_Name_CAPI *ucnhash_capi;
+
+    ucnhash_capi = _Py_atomic_load_ptr(&interp->unicode.ucnhash_capi);
+    if (ucnhash_capi == NULL) {
+        ucnhash_capi = (_PyUnicode_Name_CAPI *)PyCapsule_Import(
+                PyUnicodeData_CAPSULE_NAME, 1);
+
+        // It's fine if we overwite the value here. It's always the same value.
+        _Py_atomic_store_ptr(&interp->unicode.ucnhash_capi, ucnhash_capi);
+    }
+    return ucnhash_capi;
+}
+
 /* --- Unicode Escape Codec ----------------------------------------------- */
 
 PyObject *
@@ -5720,7 +5901,6 @@ _PyUnicode_DecodeUnicodeEscapeInternal(const char *s,
     PyObject *errorHandler = NULL;
     PyObject *exc = NULL;
     _PyUnicode_Name_CAPI *ucnhash_capi;
-    PyInterpreterState *interp = _PyInterpreterState_Get();
 
     // so we can remember if we've seen an invalid escape char or not
     *first_invalid_escape = NULL;
@@ -5868,19 +6048,13 @@ _PyUnicode_DecodeUnicodeEscapeInternal(const char *s,
 
             /* \N{name} */
         case 'N':
-            ucnhash_capi = interp->unicode.ucnhash_capi;
+            ucnhash_capi = _PyUnicode_GetNameCAPI();
             if (ucnhash_capi == NULL) {
-                /* load the unicode data module */
-                ucnhash_capi = (_PyUnicode_Name_CAPI *)PyCapsule_Import(
-                                                PyUnicodeData_CAPSULE_NAME, 1);
-                if (ucnhash_capi == NULL) {
-                    PyErr_SetString(
+                PyErr_SetString(
                         PyExc_UnicodeError,
                         "\\N escapes not supported (can't load unicodedata module)"
-                        );
-                    goto onError;
-                }
-                interp->unicode.ucnhash_capi = ucnhash_capi;
+                );
+                goto onError;
             }
 
             message = "malformed \\N character escape";
@@ -6950,7 +7124,7 @@ decode_code_page_errors(UINT code_page,
             if (err != ERROR_NO_UNICODE_TRANSLATION
                 && err != ERROR_INSUFFICIENT_BUFFER)
             {
-                PyErr_SetFromWindowsErr(0);
+                PyErr_SetFromWindowsErr(err);
                 goto error;
             }
             insize++;
@@ -7824,25 +7998,30 @@ PyUnicode_BuildEncodingMap(PyObject* string)
 
     if (need_dict) {
         PyObject *result = PyDict_New();
-        PyObject *key, *value;
         if (!result)
             return NULL;
         for (i = 0; i < length; i++) {
-            key = PyLong_FromLong(PyUnicode_READ(kind, data, i));
-            value = PyLong_FromLong(i);
-            if (!key || !value)
-                goto failed1;
-            if (PyDict_SetItem(result, key, value) == -1)
-                goto failed1;
+            Py_UCS4 c = PyUnicode_READ(kind, data, i);
+            PyObject *key = PyLong_FromLong(c);
+            if (key == NULL) {
+                Py_DECREF(result);
+                return NULL;
+            }
+            PyObject *value = PyLong_FromLong(i);
+            if (value == NULL) {
+                Py_DECREF(key);
+                Py_DECREF(result);
+                return NULL;
+            }
+            int rc = PyDict_SetItem(result, key, value);
             Py_DECREF(key);
             Py_DECREF(value);
+            if (rc < 0) {
+                Py_DECREF(result);
+                return NULL;
+            }
         }
         return result;
-      failed1:
-        Py_XDECREF(key);
-        Py_XDECREF(value);
-        Py_DECREF(result);
-        return NULL;
     }
 
     /* Create a three-level trie */
@@ -10099,7 +10278,7 @@ replace(PyObject *self, PyObject *str1,
         }
         new_size = slen + n * (len2 - len1);
         if (new_size == 0) {
-            u = unicode_new_empty();
+            u = unicode_get_empty();
             goto done;
         }
         if (new_size > (PY_SSIZE_T_MAX / rkind)) {
@@ -10523,6 +10702,82 @@ PyUnicode_CompareWithASCIIString(PyObject* uni, const char* str)
     }
 }
 
+int
+PyUnicode_EqualToUTF8(PyObject *unicode, const char *str)
+{
+    return PyUnicode_EqualToUTF8AndSize(unicode, str, strlen(str));
+}
+
+int
+PyUnicode_EqualToUTF8AndSize(PyObject *unicode, const char *str, Py_ssize_t size)
+{
+    assert(_PyUnicode_CHECK(unicode));
+    assert(str);
+
+    if (PyUnicode_IS_ASCII(unicode)) {
+        Py_ssize_t len = PyUnicode_GET_LENGTH(unicode);
+        return size == len &&
+            memcmp(PyUnicode_1BYTE_DATA(unicode), str, len) == 0;
+    }
+    if (PyUnicode_UTF8(unicode) != NULL) {
+        Py_ssize_t len = PyUnicode_UTF8_LENGTH(unicode);
+        return size == len &&
+            memcmp(PyUnicode_UTF8(unicode), str, len) == 0;
+    }
+
+    Py_ssize_t len = PyUnicode_GET_LENGTH(unicode);
+    if ((size_t)len >= (size_t)size || (size_t)len < (size_t)size / 4) {
+        return 0;
+    }
+    const unsigned char *s = (const unsigned char *)str;
+    const unsigned char *ends = s + (size_t)size;
+    int kind = PyUnicode_KIND(unicode);
+    const void *data = PyUnicode_DATA(unicode);
+    /* Compare Unicode string and UTF-8 string */
+    for (Py_ssize_t i = 0; i < len; i++) {
+        Py_UCS4 ch = PyUnicode_READ(kind, data, i);
+        if (ch < 0x80) {
+            if (ends == s || s[0] != ch) {
+                return 0;
+            }
+            s += 1;
+        }
+        else if (ch < 0x800) {
+            if ((ends - s) < 2 ||
+                s[0] != (0xc0 | (ch >> 6)) ||
+                s[1] != (0x80 | (ch & 0x3f)))
+            {
+                return 0;
+            }
+            s += 2;
+        }
+        else if (ch < 0x10000) {
+            if (Py_UNICODE_IS_SURROGATE(ch) ||
+                (ends - s) < 3 ||
+                s[0] != (0xe0 | (ch >> 12)) ||
+                s[1] != (0x80 | ((ch >> 6) & 0x3f)) ||
+                s[2] != (0x80 | (ch & 0x3f)))
+            {
+                return 0;
+            }
+            s += 3;
+        }
+        else {
+            assert(ch <= MAX_UNICODE);
+            if ((ends - s) < 4 ||
+                s[0] != (0xf0 | (ch >> 18)) ||
+                s[1] != (0x80 | ((ch >> 12) & 0x3f)) ||
+                s[2] != (0x80 | ((ch >> 6) & 0x3f)) ||
+                s[3] != (0x80 | (ch & 0x3f)))
+            {
+                return 0;
+            }
+            s += 4;
+        }
+    }
+    return s == ends;
+}
+
 int
 _PyUnicode_EqualToASCIIString(PyObject *unicode, const char *str)
 {
@@ -11909,10 +12164,10 @@ str.replace as unicode_replace
 
     old: unicode
     new: unicode
+    /
     count: Py_ssize_t = -1
         Maximum number of occurrences to replace.
         -1 (the default value) means replace all occurrences.
-    /
 
 Return a copy with all occurrences of substring old replaced by new.
 
@@ -11923,7 +12178,7 @@ replaced.
 static PyObject *
 unicode_replace_impl(PyObject *self, PyObject *old, PyObject *new,
                      Py_ssize_t count)
-/*[clinic end generated code: output=b63f1a8b5eebf448 input=147d12206276ebeb]*/
+/*[clinic end generated code: output=b63f1a8b5eebf448 input=3345c455d60a5499]*/
 {
     return replace(self, old, new, count);
 }
@@ -12246,7 +12501,7 @@ str.split as unicode_split
         The separator used to split the string.
 
         When set to None (the default value), will split on any whitespace
-        character (including \\n \\r \\t \\f and spaces) and will discard
+        character (including \n \r \t \f and spaces) and will discard
         empty strings from the result.
     maxsplit: Py_ssize_t = -1
         Maximum number of splits (starting from the left).
@@ -12262,7 +12517,7 @@ the regular expression module.
 
 static PyObject *
 unicode_split_impl(PyObject *self, PyObject *sep, Py_ssize_t maxsplit)
-/*[clinic end generated code: output=3a65b1db356948dc input=906d953b44efc43b]*/
+/*[clinic end generated code: output=3a65b1db356948dc input=07b9040d98c5fe8d]*/
 {
     if (sep == Py_None)
         return split(self, NULL, maxsplit);
@@ -13145,15 +13400,17 @@ _PyUnicodeWriter_Dealloc(_PyUnicodeWriter *writer)
 #include "stringlib/unicode_format.h"
 
 PyDoc_STRVAR(format__doc__,
-             "S.format(*args, **kwargs) -> str\n\
+             "format($self, /, *args, **kwargs)\n\
+--\n\
 \n\
-Return a formatted version of S, using substitutions from args and kwargs.\n\
+Return a formatted version of the string, using substitutions from args and kwargs.\n\
 The substitutions are identified by braces ('{' and '}').");
 
 PyDoc_STRVAR(format_map__doc__,
-             "S.format_map(mapping) -> str\n\
+             "format_map($self, /, mapping)\n\
+--\n\
 \n\
-Return a formatted version of S, using substitutions from mapping.\n\
+Return a formatted version of the string, using substitutions from mapping.\n\
 The substitutions are identified by braces ('{' and '}').");
 
 /*[clinic input]
@@ -13878,7 +14135,7 @@ unicode_format_arg_parse(struct unicode_formatter_t *ctx,
                                 "* wants int");
                 return -1;
             }
-            arg->prec = _PyLong_AsInt(v);
+            arg->prec = PyLong_AsInt(v);
             if (arg->prec == -1 && PyErr_Occurred())
                 return -1;
             if (arg->prec < 0)
@@ -14343,7 +14600,7 @@ unicode_new_impl(PyTypeObject *type, PyObject *x, const char *encoding,
 {
     PyObject *unicode;
     if (x == NULL) {
-        unicode = unicode_new_empty();
+        unicode = unicode_get_empty();
     }
     else if (encoding == NULL && errors == NULL) {
         unicode = PyObject_Str(x);
@@ -14387,6 +14644,7 @@ unicode_subtype_new(PyTypeObject *type, PyObject *unicode)
     _PyUnicode_STATE(self).kind = kind;
     _PyUnicode_STATE(self).compact = 0;
     _PyUnicode_STATE(self).ascii = _PyUnicode_STATE(unicode).ascii;
+    _PyUnicode_STATE(self).statically_allocated = 0;
     _PyUnicode_UTF8_LENGTH(self) = 0;
     _PyUnicode_UTF8(self) = NULL;
     _PyUnicode_DATA_ANY(self) = NULL;
@@ -14450,7 +14708,7 @@ errors is specified, then the object must expose a data buffer\n\
 that will be decoded using the given encoding and error handler.\n\
 Otherwise, returns the result of object.__str__() (if defined)\n\
 or repr(object).\n\
-encoding defaults to sys.getdefaultencoding().\n\
+encoding defaults to 'utf-8'.\n\
 errors defaults to 'strict'.");
 
 static PyObject *unicode_iter(PyObject *seq);
@@ -14610,6 +14868,23 @@ _PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p)
         return;
     }
 
+    /* Look in the global cache first. */
+    PyObject *r = (PyObject *)_Py_hashtable_get(INTERNED_STRINGS, s);
+    if (r != NULL && r != s) {
+        Py_SETREF(*p, Py_NewRef(r));
+        return;
+    }
+
+    /* Handle statically allocated strings. */
+    if (_PyUnicode_STATE(s).statically_allocated) {
+        assert(_Py_IsImmortal(s));
+        if (_Py_hashtable_set(INTERNED_STRINGS, s, s) == 0) {
+            _PyUnicode_STATE(*p).interned = SSTATE_INTERNED_IMMORTAL_STATIC;
+        }
+        return;
+    }
+
+    /* Look in the per-interpreter cache. */
     PyObject *interned = get_interned_dict(interp);
     assert(interned != NULL);
 
@@ -14625,9 +14900,11 @@ _PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p)
     }
 
     if (_Py_IsImmortal(s)) {
+        // XXX Restrict this to the main interpreter?
         _PyUnicode_STATE(*p).interned = SSTATE_INTERNED_IMMORTAL_STATIC;
-       return;
+        return;
     }
+
 #ifdef Py_REF_DEBUG
     /* The reference count value excluding the 2 references from the
        interned dictionary should be excluded from the RefTotal. The
@@ -14702,17 +14979,26 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
     PyObject *s, *ignored_value;
     while (PyDict_Next(interned, &pos, &s, &ignored_value)) {
         assert(PyUnicode_IS_READY(s));
+        int shared = 0;
         switch (PyUnicode_CHECK_INTERNED(s)) {
         case SSTATE_INTERNED_IMMORTAL:
             // Skip the Immortal Instance check and restore
             // the two references (key and value) ignored
             // by PyUnicode_InternInPlace().
-            s->ob_refcnt = 2;
+            _Py_SetMortal(s, 2);
 #ifdef INTERNED_STATS
             total_length += PyUnicode_GET_LENGTH(s);
 #endif
             break;
         case SSTATE_INTERNED_IMMORTAL_STATIC:
+            /* It is shared between interpreters, so we should unmark it
+               only when this is the last interpreter in which it's
+               interned.  We immortalize all the statically initialized
+               strings during startup, so we can rely on the
+               main interpreter to be the last one. */
+            if (!_Py_IsMainInterpreter(interp)) {
+                shared = 1;
+            }
             break;
         case SSTATE_INTERNED_MORTAL:
             /* fall through */
@@ -14721,7 +15007,9 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
         default:
             Py_UNREACHABLE();
         }
-        _PyUnicode_STATE(s).interned = SSTATE_NOT_INTERNED;
+        if (!shared) {
+            _PyUnicode_STATE(s).interned = SSTATE_NOT_INTERNED;
+        }
     }
 #ifdef INTERNED_STATS
     fprintf(stderr,
@@ -14801,8 +15089,7 @@ unicode_ascii_iter_next(unicodeiterobject *it)
         Py_UCS1 chr = (Py_UCS1)PyUnicode_READ(PyUnicode_1BYTE_KIND,
                                               data, it->it_index);
         it->it_index++;
-        PyObject *item = (PyObject*)&_Py_SINGLETON(strings).ascii[chr];
-        return Py_NewRef(item);
+        return (PyObject*)&_Py_SINGLETON(strings).ascii[chr];
     }
     it->it_seq = NULL;
     Py_DECREF(seq);
@@ -14832,7 +15119,7 @@ unicodeiter_reduce(unicodeiterobject *it, PyObject *Py_UNUSED(ignored))
     if (it->it_seq != NULL) {
         return Py_BuildValue("N(O)n", iter, it->it_seq, it->it_index);
     } else {
-        PyObject *u = unicode_new_empty();
+        PyObject *u = unicode_get_empty();
         if (u == NULL) {
             Py_XDECREF(iter);
             return NULL;
@@ -15062,10 +15349,13 @@ init_fs_codec(PyInterpreterState *interp)
 
     /* Set Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
        global configuration variables. */
-    if (_Py_SetFileSystemEncoding(fs_codec->encoding,
-                                  fs_codec->errors) < 0) {
-        PyErr_NoMemory();
-        return -1;
+    if (_Py_IsMainInterpreter(interp)) {
+
+        if (_Py_SetFileSystemEncoding(fs_codec->encoding,
+                                      fs_codec->errors) < 0) {
+            PyErr_NoMemory();
+            return -1;
+        }
     }
     return 0;
 }
@@ -15209,8 +15499,3 @@ PyInit__string(void)
 {
     return PyModuleDef_Init(&_string_module);
 }
-
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Objects/unicodetype_db.h b/Objects/unicodetype_db.h
index 22f8243eaec1b7..e6dbeffbe2aa3e 100644
--- a/Objects/unicodetype_db.h
+++ b/Objects/unicodetype_db.h
@@ -1,4 +1,4 @@
-/* this file was generated by Tools/unicode/makeunicodedata.py 3.3 */
+/* this file was generated by ./Tools/unicode/makeunicodedata.py 3.3 */
 
 /* a list of unique character type descriptors */
 const _PyUnicode_TypeRecord _PyUnicode_TypeRecords[] = {
@@ -360,6 +360,7 @@ const _PyUnicode_TypeRecord _PyUnicode_TypeRecords[] = {
     {0, -128, 0, 0, 0, 10113},
     {0, -126, 0, 0, 0, 10113},
     {33555335, 18875268, 16778121, 0, 0, 26433},
+    {0, 0, 0, 0, 0, 4608},
     {0, 0, 0, 0, 0, 3076},
     {0, 0, 0, 0, 4, 3076},
     {0, 0, 0, 0, 5, 3076},
@@ -1760,603 +1761,603 @@ static const unsigned short index1[] = {
     76, 64, 77, 78, 79, 80, 81, 82, 83, 64, 64, 84, 85, 34, 34, 34, 34, 34,
     34, 86, 34, 34, 34, 34, 34, 87, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 88, 89, 90, 91, 34, 34, 34, 92, 34, 34,
-    34, 93, 94, 34, 34, 34, 34, 34, 95, 34, 34, 34, 96, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 97, 98, 99, 34, 34, 34, 34, 34, 34, 100, 101, 34, 34,
-    34, 34, 34, 34, 34, 34, 102, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 103, 34, 34, 34, 34, 34, 34, 34, 34, 104, 34, 34, 34, 34,
-    100, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 103, 34, 34, 34, 34, 34, 34, 105, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 106, 107, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 108, 109, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 110, 34, 34, 34, 34, 34,
-    34, 34, 34, 111, 34, 34, 112, 113, 114, 115, 116, 117, 118, 119, 120,
-    121, 122, 123, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 88, 89, 90, 91, 92, 93, 34, 94, 34, 34,
+    34, 95, 96, 34, 34, 34, 34, 34, 97, 34, 34, 34, 98, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 99, 100, 101, 34, 34, 34, 34, 34, 34, 102, 103, 34,
+    34, 34, 34, 34, 34, 34, 34, 104, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    105, 34, 34, 34, 93, 34, 34, 34, 34, 34, 34, 34, 34, 106, 34, 34, 34, 34,
+    107, 108, 34, 34, 34, 34, 34, 109, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 93, 34, 34, 34, 34, 34, 34, 110, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 111, 112, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 113, 34, 34, 34, 34, 114, 34, 34, 115, 116, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 117, 34, 34, 34,
+    34, 34, 34, 34, 34, 118, 34, 34, 119, 120, 121, 122, 123, 124, 125, 126,
+    127, 128, 129, 130, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 124, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 126, 127, 128,
-    129, 130, 131, 132, 34, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
-    125, 143, 144, 145, 146, 147, 148, 149, 34, 34, 150, 151, 152, 153, 154,
-    155, 156, 157, 158, 159, 160, 161, 162, 125, 163, 164, 165, 166, 167,
-    168, 169, 170, 171, 172, 173, 125, 174, 175, 125, 176, 177, 178, 179,
-    125, 180, 181, 182, 183, 184, 185, 186, 125, 187, 188, 189, 190, 125,
-    191, 192, 193, 34, 34, 34, 34, 34, 34, 34, 194, 195, 34, 196, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 197, 34, 34, 34, 34, 34, 34, 34, 34, 198, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 34, 34, 34, 34, 199, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 34, 34, 34, 34, 200, 201, 202, 203, 125, 125, 125, 125, 204,
-    205, 206, 207, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 131, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 133, 134,
+    135, 136, 137, 138, 139, 34, 140, 141, 142, 143, 144, 145, 146, 147, 148,
+    149, 132, 150, 151, 152, 153, 154, 155, 156, 34, 34, 157, 158, 159, 160,
+    161, 162, 163, 164, 165, 166, 167, 168, 169, 132, 170, 171, 172, 173,
+    174, 175, 176, 177, 178, 179, 180, 132, 181, 182, 132, 183, 184, 185,
+    186, 132, 187, 188, 189, 190, 191, 192, 193, 132, 194, 195, 196, 197,
+    132, 198, 199, 200, 34, 34, 34, 34, 34, 34, 34, 201, 202, 34, 203, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 204, 34, 34, 34, 34, 34, 34, 34, 34, 205, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 34, 34, 34, 34, 206, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 34, 34, 34, 34, 207, 208, 209, 210, 132, 132, 132, 132,
+    211, 212, 213, 214, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 208, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 209, 210, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 211, 34, 34, 212, 34, 34, 213, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 214, 215, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 216, 217, 64, 218,
-    219, 220, 221, 222, 223, 125, 224, 225, 226, 227, 228, 229, 230, 231, 64,
-    64, 64, 64, 232, 233, 125, 125, 125, 125, 125, 125, 125, 125, 234, 125,
-    235, 236, 237, 125, 125, 238, 125, 125, 125, 239, 125, 125, 125, 125,
-    125, 240, 34, 241, 242, 125, 125, 125, 125, 125, 243, 244, 245, 125, 246,
-    247, 125, 125, 248, 249, 250, 251, 252, 125, 64, 253, 64, 64, 64, 64, 64,
-    254, 255, 256, 257, 258, 64, 64, 259, 260, 64, 261, 125, 125, 125, 125,
-    125, 125, 125, 125, 262, 263, 264, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 86, 265, 34, 266, 267, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 215, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 216, 217, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 218, 34, 34, 219, 34, 34, 220, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 221, 222, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 223, 224, 64,
+    225, 226, 227, 228, 229, 230, 132, 231, 232, 233, 234, 235, 236, 237,
+    238, 64, 64, 64, 64, 239, 240, 132, 132, 132, 132, 132, 132, 132, 132,
+    241, 132, 242, 243, 244, 132, 132, 245, 132, 132, 132, 246, 132, 132,
+    132, 132, 132, 247, 34, 248, 249, 132, 132, 132, 132, 132, 250, 251, 252,
+    132, 253, 254, 132, 132, 255, 256, 257, 258, 259, 132, 64, 260, 64, 64,
+    64, 64, 64, 261, 262, 263, 264, 265, 64, 64, 266, 267, 64, 268, 132, 132,
+    132, 132, 132, 132, 132, 132, 269, 270, 271, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 86, 272, 34, 273, 274, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 268, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    269, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 270,
+    34, 34, 34, 34, 34, 34, 34, 34, 275, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 276, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 277, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 271, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 109, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 272, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 273, 34, 274, 34, 34,
+    278, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 279, 34, 280,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 275, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 281, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 276, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 34, 268, 34, 34, 277, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 282, 34, 34, 34, 34, 283,
+    132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 34, 275, 34, 34, 284, 132, 132, 132, 132, 132,
+    132, 132, 132, 132, 132, 132, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 34, 34, 34, 278, 34, 34, 34, 34, 34, 34, 34, 34,
+    34, 34, 34, 34, 34, 34, 34, 34, 34, 285, 34, 34, 34, 34, 34, 34, 34, 34,
     34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
-    34, 34, 34, 34, 34, 34, 279, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
-    125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
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 };
 
 static const unsigned short index2[] = {
@@ -2777,27 +2778,27 @@ static const unsigned short index2[] = {
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-    20, 20, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 5, 4, 4, 5, 2, 2, 20, 20, 20, 20, 20, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 20, 20, 20, 20, 20, 0, 20, 20,
-    20, 20, 20, 20, 20, 20, 20, 20, 358, 101, 0, 0, 359, 360, 361, 362, 363,
-    364, 4, 4, 4, 4, 4, 101, 358, 25, 21, 22, 359, 360, 361, 362, 363, 364,
-    4, 4, 4, 4, 4, 0, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
-    101, 101, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 5,
-    5, 5, 5, 24, 5, 5, 5, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 120, 4, 4, 4, 4, 120, 4,
-    4, 19, 120, 120, 120, 19, 19, 120, 120, 120, 19, 4, 120, 4, 4, 365, 120,
-    120, 120, 120, 120, 4, 4, 4, 4, 4, 4, 120, 4, 366, 4, 120, 4, 367, 368,
-    120, 120, 365, 19, 120, 120, 369, 120, 19, 54, 54, 54, 54, 19, 4, 4, 19,
-    19, 120, 120, 4, 4, 4, 4, 4, 120, 19, 19, 19, 19, 4, 4, 4, 4, 370, 4, 26,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 371, 371,
-    371, 371, 371, 371, 371, 371, 371, 371, 371, 371, 371, 371, 371, 371,
+    358, 358, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 5, 4, 4, 5, 2, 2, 20, 20, 20, 20, 20, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 20, 20, 20, 20, 20, 0, 20,
+    20, 20, 20, 20, 20, 20, 20, 20, 20, 359, 101, 0, 0, 360, 361, 362, 363,
+    364, 365, 4, 4, 4, 4, 4, 101, 359, 25, 21, 22, 360, 361, 362, 363, 364,
+    365, 4, 4, 4, 4, 4, 0, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101,
+    101, 101, 101, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    24, 5, 5, 5, 5, 24, 5, 5, 5, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 120, 4, 4, 4, 4,
+    120, 4, 4, 19, 120, 120, 120, 19, 19, 120, 120, 120, 19, 4, 120, 4, 4,
+    366, 120, 120, 120, 120, 120, 4, 4, 4, 4, 4, 4, 120, 4, 367, 4, 120, 4,
+    368, 369, 120, 120, 366, 19, 120, 120, 370, 120, 19, 54, 54, 54, 54, 19,
+    4, 4, 19, 19, 120, 120, 4, 4, 4, 4, 4, 120, 19, 19, 19, 19, 4, 4, 4, 4,
+    371, 4, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
     372, 372, 372, 372, 372, 372, 372, 372, 372, 372, 372, 372, 372, 372,
-    372, 372, 242, 242, 242, 29, 30, 242, 242, 242, 242, 26, 4, 4, 0, 0, 0,
-    0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    372, 372, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373,
+    373, 373, 373, 373, 242, 242, 242, 29, 30, 242, 242, 242, 242, 26, 4, 4,
+    0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
@@ -2808,26 +2809,26 @@ static const unsigned short index2[] = {
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26, 26, 26, 26, 26, 26, 26,
-    26, 26, 26, 26, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26, 26, 26, 26,
-    26, 26, 26, 26, 26, 26, 26, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 373, 373, 373, 373, 373,
-    373, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373, 373,
-    373, 373, 373, 373, 373, 373, 373, 374, 374, 374, 374, 374, 374, 374,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 26, 26, 26, 26,
+    26, 26, 26, 26, 26, 26, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 26,
+    26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 21, 22, 360, 361, 362, 363, 364,
+    365, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 374, 374, 374, 374,
     374, 374, 374, 374, 374, 374, 374, 374, 374, 374, 374, 374, 374, 374,
-    374, 374, 374, 374, 374, 358, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25,
-    21, 22, 359, 360, 361, 362, 363, 364, 26, 358, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    374, 374, 374, 374, 374, 374, 374, 374, 375, 375, 375, 375, 375, 375,
+    375, 375, 375, 375, 375, 375, 375, 375, 375, 375, 375, 375, 375, 375,
+    375, 375, 375, 375, 375, 375, 359, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+    26, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 359, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 25, 21, 22, 359, 360, 361, 362,
-    363, 364, 26, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26, 25, 21, 22,
-    359, 360, 361, 362, 363, 364, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 25, 21, 22, 360, 361,
+    362, 363, 364, 365, 26, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 25,
+    21, 22, 360, 361, 362, 363, 364, 365, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
@@ -2836,85 +2837,85 @@ static const unsigned short index2[] = {
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 135, 135, 135, 135, 135,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 135, 135, 135, 135,
     135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135,
     135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135,
     135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, 135,
-    135, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
+    135, 135, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
     136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
     136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-    136, 136, 136, 136, 136, 136, 136, 29, 30, 375, 376, 377, 378, 379, 29,
-    30, 29, 30, 29, 30, 380, 381, 382, 383, 19, 29, 30, 19, 29, 30, 19, 19,
-    19, 19, 19, 101, 101, 384, 384, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30,
-    29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30,
-    29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30,
-    29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30,
-    29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30,
-    29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30,
-    19, 4, 4, 4, 4, 4, 4, 29, 30, 29, 30, 24, 24, 24, 29, 30, 0, 0, 0, 0, 0,
-    4, 4, 4, 4, 26, 4, 4, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385,
-    385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385,
-    385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 385, 0,
-    385, 0, 0, 0, 0, 0, 385, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 102, 4, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54,
-    54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54,
-    54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54,
-    54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 24, 24, 24, 24, 24, 24, 24,
+    136, 136, 136, 136, 136, 136, 136, 136, 29, 30, 376, 377, 378, 379, 380,
+    29, 30, 29, 30, 29, 30, 381, 382, 383, 384, 19, 29, 30, 19, 29, 30, 19,
+    19, 19, 19, 19, 101, 101, 385, 385, 29, 30, 29, 30, 29, 30, 29, 30, 29,
+    30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29,
+    30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29,
+    30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29,
+    30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29,
+    30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29,
+    30, 19, 4, 4, 4, 4, 4, 4, 29, 30, 29, 30, 24, 24, 24, 29, 30, 0, 0, 0, 0,
+    0, 4, 4, 4, 4, 26, 4, 4, 386, 386, 386, 386, 386, 386, 386, 386, 386,
+    386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386,
+    386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386, 386,
+    386, 0, 386, 0, 0, 0, 0, 0, 386, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 102,
+    4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54, 54,
+    54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0,
+    54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 54,
+    54, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 0, 24, 24, 24, 24, 24, 24,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-    24, 24, 24, 24, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    24, 24, 24, 24, 24, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 386, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 387, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 0, 0, 0, 0, 1, 4, 4, 4, 4, 102, 54, 242, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 242, 242, 242,
-    242, 242, 242, 242, 242, 242, 24, 24, 24, 24, 17, 17, 4, 102, 102, 102,
-    102, 102, 4, 4, 242, 242, 242, 102, 54, 4, 4, 4, 0, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 4, 4, 4, 4, 102, 54, 242, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 242, 242,
+    242, 242, 242, 242, 242, 242, 242, 24, 24, 24, 24, 17, 17, 4, 102, 102,
+    102, 102, 102, 4, 4, 242, 242, 242, 102, 54, 4, 4, 4, 0, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 24, 24, 5, 5, 102, 102, 54, 4,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 24, 24, 5, 5, 102, 102, 54,
+    4, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    4, 102, 102, 102, 54, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 17, 102, 102, 102, 54, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 0, 4, 4, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 54,
+    54, 54, 54, 54, 0, 4, 4, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 4, 4, 4, 4, 4, 4, 4,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54,
+    4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
@@ -2927,14 +2928,14 @@ static const unsigned short index2[] = {
     26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 54, 54,
-    54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -2943,7 +2944,7 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -2952,7 +2953,7 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -2961,501 +2962,551 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 387, 54, 54, 387, 54, 54, 54, 387,
-    54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 388, 54, 54, 388, 54, 54, 54, 388,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 388, 54, 388,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 387, 54, 387,
+    54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 388, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    388, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 387, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    387, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 387, 54,
-    387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 387, 387, 387,
-    54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 387,
-    387, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    388, 54, 388, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388,
+    54, 388, 388, 388, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 388, 388, 388, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54,
-    54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 387, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 387, 387, 54, 387, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    388, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 388, 388,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
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+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 54, 54, 0, 0, 0, 0, 0, 26, 26,
+    26, 26, 26, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 26, 26, 26, 26, 26, 26, 0, 0, 0, 4, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 26, 26, 54, 54, 26, 26,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 0, 0, 26, 26, 26,
+    54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 26, 26, 54, 54, 26, 26, 26, 26, 26,
+    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 0, 0, 26, 26, 26, 26, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-    26, 26, 26, 26, 26, 26, 26, 54, 24, 24, 24, 0, 24, 24, 0, 0, 0, 0, 0, 24,
-    24, 24, 24, 54, 54, 54, 54, 0, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54,
+    26, 26, 26, 26, 54, 24, 24, 24, 0, 24, 24, 0, 0, 0, 0, 0, 24, 24, 24, 24,
+    54, 54, 54, 54, 0, 54, 54, 54, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 0, 0, 24, 24, 24, 0, 0, 0, 0, 24, 25, 21, 22, 359, 26,
-    26, 26, 26, 26, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0,
-    0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 26, 26, 4, 54,
+    54, 0, 0, 24, 24, 24, 0, 0, 0, 0, 24, 25, 21, 22, 360, 26, 26, 26, 26,
+    26, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 26, 26, 26, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 54, 54, 54, 54, 54, 54, 54, 54, 4, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 26, 26, 4, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 24, 24, 0, 0, 0, 0, 26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 26, 26, 26, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54,
+    54, 54, 54, 54, 54, 54, 4, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 24,
+    24, 0, 0, 0, 0, 26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 26, 26,
-    26, 26, 26, 26, 26, 26, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 26, 26, 26, 26, 26, 26, 26,
-    26, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    26, 26, 26, 26, 26, 26, 26, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    54, 54, 54, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 26, 26, 26,
+    26, 26, 26, 26, 26, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 26, 26, 26, 26, 26, 26, 26, 26,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 26,
+    26, 26, 26, 26, 26, 26, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108,
+    108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108,
     108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108,
     108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108,
     108, 108, 108, 108, 108, 108, 108, 108, 108, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -3473,7 +3524,7 @@ static const unsigned short index2[] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26, 26,
+    0, 0, 0, 0, 0, 0, 0, 0, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
     26, 26, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -3498,7 +3549,7 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 4, 4, 4, 4,
-    4, 4, 4, 0, 0, 0, 0, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26, 26,
+    4, 4, 4, 0, 0, 0, 0, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 26,
     26, 26, 26, 26, 26, 26, 26, 26, 26, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
     24, 54, 54, 24, 24, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 17, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -3974,12 +4025,12 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 0, 0, 26, 26, 26, 26, 26, 26, 26, 26, 26, 24, 24, 24, 24, 24, 24, 24,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 501, 501, 501, 501,
-    501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501,
-    501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501, 501,
-    501, 501, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 502, 502, 502, 502,
+    502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502,
     502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502,
-    502, 502, 502, 502, 502, 502, 502, 502, 24, 24, 24, 24, 24, 24, 24, 102,
+    502, 502, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503,
+    503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503,
+    503, 503, 503, 503, 503, 503, 503, 503, 24, 24, 24, 24, 24, 24, 24, 102,
     0, 0, 0, 0, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 4, 4, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -4023,15 +4074,15 @@ static const unsigned short index2[] = {
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 358, 358, 25, 21, 22, 359, 360, 361, 362, 363, 364, 26, 26, 4, 4,
+    0, 0, 359, 359, 25, 21, 22, 360, 361, 362, 363, 364, 365, 26, 26, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 503, 503, 503, 503, 503, 503, 503, 503, 503,
-    503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503,
-    503, 503, 503, 4, 4, 4, 4, 4, 4, 503, 503, 503, 503, 503, 503, 503, 503,
-    503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503,
-    503, 503, 503, 503, 4, 4, 4, 4, 4, 4, 503, 503, 503, 503, 503, 503, 503,
-    503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503, 503,
-    503, 503, 503, 503, 503, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 504, 504, 504, 504, 504, 504, 504, 504, 504,
+    504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504,
+    504, 504, 504, 4, 4, 4, 4, 4, 4, 504, 504, 504, 504, 504, 504, 504, 504,
+    504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504,
+    504, 504, 504, 504, 4, 4, 4, 4, 4, 4, 504, 504, 504, 504, 504, 504, 504,
+    504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504, 504,
+    504, 504, 504, 504, 504, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -4089,30 +4140,30 @@ static const unsigned short index2[] = {
     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
     4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 7,
-    8, 9, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 54, 387, 54, 54, 54, 54,
+    8, 9, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 54, 388, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -4124,23 +4175,23 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54,
+    388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 388, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -4148,7 +4199,7 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 387, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 388, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
@@ -4159,68 +4210,68 @@ static const unsigned short index2[] = {
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 387, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 54, 54, 54,
+    0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0,
+    54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0,
-    0, 0, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
     54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
-    54, 54, 54, 54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
+    54, 54, 54, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 20,
+    20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
     20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
     20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
     20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
     20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-    20, 20, 20, 20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+    20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
@@ -4233,8 +4284,8 @@ static const unsigned short index2[] = {
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
     24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0,
+    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0,
 };
 
 /* Returns the numeric value as double for Unicode characters
@@ -4282,6 +4333,7 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x24EA:
     case 0x24FF:
     case 0x3007:
+    case 0x6D1E:
     case 0x96F6:
     case 0xA620:
     case 0xA6EF:
@@ -4713,6 +4765,7 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x1ECA0:
     case 0x1ECB4:
         return (double) 100000.0;
+    case 0x5146:
     case 0x16B5E:
         return (double) 1000000.0;
     case 0x1ECA1:
@@ -4721,11 +4774,14 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x5104:
     case 0x16B5F:
         return (double) 100000000.0;
+    case 0x79ED:
+        return (double) 1000000000.0;
     case 0x16B60:
         return (double) 10000000000.0;
-    case 0x5146:
     case 0x16B61:
         return (double) 1000000000000.0;
+    case 0x4EAC:
+        return (double) 1e+16;
     case 0x216A:
     case 0x217A:
     case 0x246A:
@@ -4865,7 +4921,10 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x3221:
     case 0x3281:
     case 0x3483:
+    case 0x4E24:
     case 0x4E8C:
+    case 0x4FE9:
+    case 0x5006:
     case 0x5169:
     case 0x5F0D:
     case 0x5F10:
@@ -5008,6 +5067,7 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x1EC7B:
     case 0x1ED0B:
         return (double) 20.0;
+    case 0x7695:
     case 0x1011A:
     case 0x102F4:
     case 0x109D3:
@@ -5894,6 +5954,7 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x3286:
     case 0x3B4D:
     case 0x4E03:
+    case 0x62D0:
     case 0x67D2:
     case 0x6F06:
     case 0xA627:
@@ -6198,6 +6259,8 @@ double _PyUnicode_ToNumeric(Py_UCS4 ch)
     case 0x4E5D:
     case 0x5EFE:
     case 0x7396:
+    case 0x920E:
+    case 0x94A9:
     case 0xA629:
     case 0xA6EE:
     case 0xA8D9:
diff --git a/Objects/unionobject.c b/Objects/unionobject.c
index f273f7d15ef25f..bf5605686f8df7 100644
--- a/Objects/unionobject.c
+++ b/Objects/unionobject.c
@@ -1,8 +1,9 @@
 // types.UnionType -- used to represent e.g. Union[int, str], int | str
 #include "Python.h"
 #include "pycore_object.h"  // _PyObject_GC_TRACK/UNTRACK
+#include "pycore_typevarobject.h"  // _PyTypeAlias_Type
 #include "pycore_unionobject.h"
-#include "structmember.h"
+
 
 
 static PyObject *make_union(PyObject *);
@@ -147,10 +148,14 @@ get_types(PyObject **obj, Py_ssize_t *size)
 static int
 is_unionable(PyObject *obj)
 {
-    return (obj == Py_None ||
+    if (obj == Py_None ||
         PyType_Check(obj) ||
         _PyGenericAlias_Check(obj) ||
-        _PyUnion_Check(obj));
+        _PyUnion_Check(obj) ||
+        Py_IS_TYPE(obj, &_PyTypeAlias_Type)) {
+        return 1;
+    }
+    return 0;
 }
 
 PyObject *
@@ -181,37 +186,30 @@ union_repr_item(_PyUnicodeWriter *writer, PyObject *p)
 {
     PyObject *qualname = NULL;
     PyObject *module = NULL;
-    PyObject *tmp;
     PyObject *r = NULL;
-    int err;
+    int rc;
 
     if (p == (PyObject *)&_PyNone_Type) {
         return _PyUnicodeWriter_WriteASCIIString(writer, "None", 4);
     }
 
-    if (_PyObject_LookupAttr(p, &_Py_ID(__origin__), &tmp) < 0) {
-        goto exit;
+    if ((rc = PyObject_HasAttrWithError(p, &_Py_ID(__origin__))) > 0 &&
+        (rc = PyObject_HasAttrWithError(p, &_Py_ID(__args__))) > 0)
+    {
+        // It looks like a GenericAlias
+        goto use_repr;
     }
-
-    if (tmp) {
-        Py_DECREF(tmp);
-        if (_PyObject_LookupAttr(p, &_Py_ID(__args__), &tmp) < 0) {
-            goto exit;
-        }
-        if (tmp) {
-            // It looks like a GenericAlias
-            Py_DECREF(tmp);
-            goto use_repr;
-        }
+    if (rc < 0) {
+        goto exit;
     }
 
-    if (_PyObject_LookupAttr(p, &_Py_ID(__qualname__), &qualname) < 0) {
+    if (PyObject_GetOptionalAttr(p, &_Py_ID(__qualname__), &qualname) < 0) {
         goto exit;
     }
     if (qualname == NULL) {
         goto use_repr;
     }
-    if (_PyObject_LookupAttr(p, &_Py_ID(__module__), &module) < 0) {
+    if (PyObject_GetOptionalAttr(p, &_Py_ID(__module__), &module) < 0) {
         goto exit;
     }
     if (module == NULL || module == Py_None) {
@@ -239,9 +237,9 @@ union_repr_item(_PyUnicodeWriter *writer, PyObject *p)
     if (r == NULL) {
         return -1;
     }
-    err = _PyUnicodeWriter_WriteStr(writer, r);
+    rc = _PyUnicodeWriter_WriteStr(writer, r);
     Py_DECREF(r);
-    return err;
+    return rc;
 }
 
 static PyObject *
@@ -268,7 +266,7 @@ union_repr(PyObject *self)
 }
 
 static PyMemberDef union_members[] = {
-        {"__args__", T_OBJECT, offsetof(unionobject, args), READONLY},
+        {"__args__", _Py_T_OBJECT, offsetof(unionobject, args), Py_READONLY},
         {0}
 };
 
@@ -326,7 +324,8 @@ union_parameters(PyObject *self, void *Py_UNUSED(unused))
 }
 
 static PyGetSetDef union_properties[] = {
-    {"__parameters__", union_parameters, (setter)NULL, "Type variables in the types.UnionType.", NULL},
+    {"__parameters__", union_parameters, (setter)NULL,
+     PyDoc_STR("Type variables in the types.UnionType."), NULL},
     {0}
 };
 
diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c
index aee79fc1410b29..df74be6aba7244 100644
--- a/Objects/weakrefobject.c
+++ b/Objects/weakrefobject.c
@@ -1,6 +1,9 @@
 #include "Python.h"
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_object.h"        // _PyObject_GET_WEAKREFS_LISTPTR()
-#include "structmember.h"         // PyMemberDef
+#include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
+
 
 
 #define GET_WEAKREFS_LISTPTR(o) \
@@ -19,7 +22,7 @@ _PyWeakref_GetWeakrefCount(PyWeakReference *head)
     return count;
 }
 
-static PyObject *weakref_vectorcall(PyWeakReference *self, PyObject *const *args, size_t nargsf, PyObject *kwnames);
+static PyObject *weakref_vectorcall(PyObject *self, PyObject *const *args, size_t nargsf, PyObject *kwnames);
 
 static void
 init_weakref(PyWeakReference *self, PyObject *ob, PyObject *callback)
@@ -29,7 +32,7 @@ init_weakref(PyWeakReference *self, PyObject *ob, PyObject *callback)
     self->wr_prev = NULL;
     self->wr_next = NULL;
     self->wr_callback = Py_XNewRef(callback);
-    self->vectorcall = (vectorcallfunc)weakref_vectorcall;
+    self->vectorcall = weakref_vectorcall;
 }
 
 static PyWeakReference *
@@ -129,7 +132,7 @@ gc_clear(PyWeakReference *self)
 
 
 static PyObject *
-weakref_vectorcall(PyWeakReference *self, PyObject *const *args,
+weakref_vectorcall(PyObject *self, PyObject *const *args,
                    size_t nargsf, PyObject *kwnames)
 {
     if (!_PyArg_NoKwnames("weakref", kwnames)) {
@@ -139,7 +142,11 @@ weakref_vectorcall(PyWeakReference *self, PyObject *const *args,
     if (!_PyArg_CheckPositional("weakref", nargs, 0, 0)) {
         return NULL;
     }
-    return Py_NewRef(PyWeakref_GET_OBJECT(self));
+    PyObject *obj = _PyWeakref_GET_REF(self);
+    if (obj == NULL) {
+        Py_RETURN_NONE;
+    }
+    return obj;
 }
 
 static Py_hash_t
@@ -147,12 +154,11 @@ weakref_hash(PyWeakReference *self)
 {
     if (self->hash != -1)
         return self->hash;
-    PyObject* obj = PyWeakref_GET_OBJECT(self);
-    if (obj == Py_None) {
+    PyObject* obj = _PyWeakref_GET_REF((PyObject*)self);
+    if (obj == NULL) {
         PyErr_SetString(PyExc_TypeError, "weak object has gone away");
         return -1;
     }
-    Py_INCREF(obj);
     self->hash = PyObject_Hash(obj);
     Py_DECREF(obj);
     return self->hash;
@@ -160,31 +166,24 @@ weakref_hash(PyWeakReference *self)
 
 
 static PyObject *
-weakref_repr(PyWeakReference *self)
+weakref_repr(PyObject *self)
 {
-    PyObject *name, *repr;
-    PyObject* obj = PyWeakref_GET_OBJECT(self);
-
-    if (obj == Py_None) {
+    PyObject* obj = _PyWeakref_GET_REF(self);
+    if (obj == NULL) {
         return PyUnicode_FromFormat("<weakref at %p; dead>", self);
     }
 
-    Py_INCREF(obj);
-    name = _PyObject_LookupSpecial(obj, &_Py_ID(__name__));
+    PyObject *name = _PyObject_LookupSpecial(obj, &_Py_ID(__name__));
+    PyObject *repr;
     if (name == NULL || !PyUnicode_Check(name)) {
         repr = PyUnicode_FromFormat(
             "<weakref at %p; to '%s' at %p>",
-            self,
-            Py_TYPE(PyWeakref_GET_OBJECT(self))->tp_name,
-            obj);
+            self, Py_TYPE(obj)->tp_name, obj);
     }
     else {
         repr = PyUnicode_FromFormat(
             "<weakref at %p; to '%s' at %p (%U)>",
-            self,
-            Py_TYPE(PyWeakref_GET_OBJECT(self))->tp_name,
-            obj,
-            name);
+            self, Py_TYPE(obj)->tp_name, obj, name);
     }
     Py_DECREF(obj);
     Py_XDECREF(name);
@@ -196,15 +195,18 @@ weakref_repr(PyWeakReference *self)
    gone away, they are equal if they are identical. */
 
 static PyObject *
-weakref_richcompare(PyWeakReference* self, PyWeakReference* other, int op)
+weakref_richcompare(PyObject* self, PyObject* other, int op)
 {
     if ((op != Py_EQ && op != Py_NE) ||
         !PyWeakref_Check(self) ||
         !PyWeakref_Check(other)) {
         Py_RETURN_NOTIMPLEMENTED;
     }
-    if (PyWeakref_GET_OBJECT(self) == Py_None
-        || PyWeakref_GET_OBJECT(other) == Py_None) {
+    PyObject* obj = _PyWeakref_GET_REF(self);
+    PyObject* other_obj = _PyWeakref_GET_REF(other);
+    if (obj == NULL || other_obj == NULL) {
+        Py_XDECREF(obj);
+        Py_XDECREF(other_obj);
         int res = (self == other);
         if (op == Py_NE)
             res = !res;
@@ -213,10 +215,6 @@ weakref_richcompare(PyWeakReference* self, PyWeakReference* other, int op)
         else
             Py_RETURN_FALSE;
     }
-    PyObject* obj = PyWeakref_GET_OBJECT(self);
-    PyObject* other_obj = PyWeakref_GET_OBJECT(other);
-    Py_INCREF(obj);
-    Py_INCREF(other_obj);
     PyObject* res = PyObject_RichCompare(obj, other_obj, op);
     Py_DECREF(obj);
     Py_DECREF(other_obj);
@@ -354,7 +352,7 @@ weakref___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 
 
 static PyMemberDef weakref_members[] = {
-    {"__callback__", T_OBJECT, offsetof(PyWeakReference, wr_callback), READONLY},
+    {"__callback__", _Py_T_OBJECT, offsetof(PyWeakReference, wr_callback), Py_READONLY},
     {NULL} /* Sentinel */
 };
 
@@ -372,13 +370,13 @@ _PyWeakref_RefType = {
     .tp_dealloc = weakref_dealloc,
     .tp_vectorcall_offset = offsetof(PyWeakReference, vectorcall),
     .tp_call = PyVectorcall_Call,
-    .tp_repr = (reprfunc)weakref_repr,
+    .tp_repr = weakref_repr,
     .tp_hash = (hashfunc)weakref_hash,
     .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
                 Py_TPFLAGS_HAVE_VECTORCALL | Py_TPFLAGS_BASETYPE,
     .tp_traverse = (traverseproc)gc_traverse,
     .tp_clear = (inquiry)gc_clear,
-    .tp_richcompare = (richcmpfunc)weakref_richcompare,
+    .tp_richcompare = weakref_richcompare,
     .tp_methods = weakref_methods,
     .tp_members = weakref_members,
     .tp_init = weakref___init__,
@@ -388,15 +386,15 @@ _PyWeakref_RefType = {
 };
 
 
-static int
-proxy_checkref(PyWeakReference *proxy)
+static bool
+proxy_check_ref(PyObject *obj)
 {
-    if (PyWeakref_GET_OBJECT(proxy) == Py_None) {
+    if (obj == NULL) {
         PyErr_SetString(PyExc_ReferenceError,
                         "weakly-referenced object no longer exists");
-        return 0;
+        return false;
     }
-    return 1;
+    return true;
 }
 
 
@@ -406,16 +404,19 @@ proxy_checkref(PyWeakReference *proxy)
  */
 #define UNWRAP(o) \
         if (PyWeakref_CheckProxy(o)) { \
-            if (!proxy_checkref((PyWeakReference *)o)) \
+            o = _PyWeakref_GET_REF(o); \
+            if (!proxy_check_ref(o)) { \
                 return NULL; \
-            o = PyWeakref_GET_OBJECT(o); \
+            } \
+        } \
+        else { \
+            Py_INCREF(o); \
         }
 
 #define WRAP_UNARY(method, generic) \
     static PyObject * \
     method(PyObject *proxy) { \
         UNWRAP(proxy); \
-        Py_INCREF(proxy); \
         PyObject* res = generic(proxy); \
         Py_DECREF(proxy); \
         return res; \
@@ -426,8 +427,6 @@ proxy_checkref(PyWeakReference *proxy)
     method(PyObject *x, PyObject *y) { \
         UNWRAP(x); \
         UNWRAP(y); \
-        Py_INCREF(x); \
-        Py_INCREF(y); \
         PyObject* res = generic(x, y); \
         Py_DECREF(x); \
         Py_DECREF(y); \
@@ -442,11 +441,9 @@ proxy_checkref(PyWeakReference *proxy)
     method(PyObject *proxy, PyObject *v, PyObject *w) { \
         UNWRAP(proxy); \
         UNWRAP(v); \
-        if (w != NULL) \
+        if (w != NULL) { \
             UNWRAP(w); \
-        Py_INCREF(proxy); \
-        Py_INCREF(v); \
-        Py_XINCREF(w); \
+        } \
         PyObject* res = generic(proxy, v, w); \
         Py_DECREF(proxy); \
         Py_DECREF(v); \
@@ -458,7 +455,6 @@ proxy_checkref(PyWeakReference *proxy)
     static PyObject * \
     method(PyObject *proxy, PyObject *Py_UNUSED(ignored)) { \
             UNWRAP(proxy); \
-            Py_INCREF(proxy); \
             PyObject* res = PyObject_CallMethodNoArgs(proxy, &_Py_ID(SPECIAL)); \
             Py_DECREF(proxy); \
             return res; \
@@ -472,23 +468,24 @@ WRAP_UNARY(proxy_str, PyObject_Str)
 WRAP_TERNARY(proxy_call, PyObject_Call)
 
 static PyObject *
-proxy_repr(PyWeakReference *proxy)
+proxy_repr(PyObject *proxy)
 {
-    return PyUnicode_FromFormat(
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    PyObject *repr = PyUnicode_FromFormat(
         "<weakproxy at %p to %s at %p>",
-        proxy,
-        Py_TYPE(PyWeakref_GET_OBJECT(proxy))->tp_name,
-        PyWeakref_GET_OBJECT(proxy));
+        proxy, Py_TYPE(obj)->tp_name, obj);
+    Py_DECREF(obj);
+    return repr;
 }
 
 
 static int
-proxy_setattr(PyWeakReference *proxy, PyObject *name, PyObject *value)
+proxy_setattr(PyObject *proxy, PyObject *name, PyObject *value)
 {
-    if (!proxy_checkref(proxy))
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(obj)) {
         return -1;
-    PyObject *obj = PyWeakref_GET_OBJECT(proxy);
-    Py_INCREF(obj);
+    }
     int res = PyObject_SetAttr(obj, name, value);
     Py_DECREF(obj);
     return res;
@@ -499,7 +496,10 @@ proxy_richcompare(PyObject *proxy, PyObject *v, int op)
 {
     UNWRAP(proxy);
     UNWRAP(v);
-    return PyObject_RichCompare(proxy, v, op);
+    PyObject* res = PyObject_RichCompare(proxy, v, op);
+    Py_DECREF(proxy);
+    Py_DECREF(v);
+    return res;
 }
 
 /* number slots */
@@ -539,13 +539,12 @@ WRAP_BINARY(proxy_matmul, PyNumber_MatrixMultiply)
 WRAP_BINARY(proxy_imatmul, PyNumber_InPlaceMatrixMultiply)
 
 static int
-proxy_bool(PyWeakReference *proxy)
+proxy_bool(PyObject *proxy)
 {
-    PyObject *o = PyWeakref_GET_OBJECT(proxy);
-    if (!proxy_checkref(proxy)) {
+    PyObject *o = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(o)) {
         return -1;
     }
-    Py_INCREF(o);
     int res = PyObject_IsTrue(o);
     Py_DECREF(o);
     return res;
@@ -564,13 +563,12 @@ proxy_dealloc(PyWeakReference *self)
 /* sequence slots */
 
 static int
-proxy_contains(PyWeakReference *proxy, PyObject *value)
+proxy_contains(PyObject *proxy, PyObject *value)
 {
-    if (!proxy_checkref(proxy))
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(obj)) {
         return -1;
-
-    PyObject *obj = PyWeakref_GET_OBJECT(proxy);
-    Py_INCREF(obj);
+    }
     int res = PySequence_Contains(obj, value);
     Py_DECREF(obj);
     return res;
@@ -579,13 +577,12 @@ proxy_contains(PyWeakReference *proxy, PyObject *value)
 /* mapping slots */
 
 static Py_ssize_t
-proxy_length(PyWeakReference *proxy)
+proxy_length(PyObject *proxy)
 {
-    if (!proxy_checkref(proxy))
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(obj)) {
         return -1;
-
-    PyObject *obj = PyWeakref_GET_OBJECT(proxy);
-    Py_INCREF(obj);
+    }
     Py_ssize_t res = PyObject_Length(obj);
     Py_DECREF(obj);
     return res;
@@ -594,13 +591,12 @@ proxy_length(PyWeakReference *proxy)
 WRAP_BINARY(proxy_getitem, PyObject_GetItem)
 
 static int
-proxy_setitem(PyWeakReference *proxy, PyObject *key, PyObject *value)
+proxy_setitem(PyObject *proxy, PyObject *key, PyObject *value)
 {
-    if (!proxy_checkref(proxy))
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(obj)) {
         return -1;
-
-    PyObject *obj = PyWeakref_GET_OBJECT(proxy);
-    Py_INCREF(obj);
+    }
     int res;
     if (value == NULL) {
         res = PyObject_DelItem(obj, key);
@@ -614,31 +610,31 @@ proxy_setitem(PyWeakReference *proxy, PyObject *key, PyObject *value)
 /* iterator slots */
 
 static PyObject *
-proxy_iter(PyWeakReference *proxy)
+proxy_iter(PyObject *proxy)
 {
-    if (!proxy_checkref(proxy))
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(obj)) {
         return NULL;
-    PyObject *obj = PyWeakref_GET_OBJECT(proxy);
-    Py_INCREF(obj);
+    }
     PyObject* res = PyObject_GetIter(obj);
     Py_DECREF(obj);
     return res;
 }
 
 static PyObject *
-proxy_iternext(PyWeakReference *proxy)
+proxy_iternext(PyObject *proxy)
 {
-    if (!proxy_checkref(proxy))
+    PyObject *obj = _PyWeakref_GET_REF(proxy);
+    if (!proxy_check_ref(obj)) {
         return NULL;
-
-    PyObject *obj = PyWeakref_GET_OBJECT(proxy);
+    }
     if (!PyIter_Check(obj)) {
         PyErr_Format(PyExc_TypeError,
             "Weakref proxy referenced a non-iterator '%.200s' object",
             Py_TYPE(obj)->tp_name);
+        Py_DECREF(obj);
         return NULL;
     }
-    Py_INCREF(obj);
     PyObject* res = PyIter_Next(obj);
     Py_DECREF(obj);
     return res;
@@ -666,7 +662,7 @@ static PyNumberMethods proxy_as_number = {
     proxy_neg,              /*nb_negative*/
     proxy_pos,              /*nb_positive*/
     proxy_abs,              /*nb_absolute*/
-    (inquiry)proxy_bool,    /*nb_bool*/
+    proxy_bool,             /*nb_bool*/
     proxy_invert,           /*nb_invert*/
     proxy_lshift,           /*nb_lshift*/
     proxy_rshift,           /*nb_rshift*/
@@ -696,20 +692,20 @@ static PyNumberMethods proxy_as_number = {
 };
 
 static PySequenceMethods proxy_as_sequence = {
-    (lenfunc)proxy_length,      /*sq_length*/
+    proxy_length,               /*sq_length*/
     0,                          /*sq_concat*/
     0,                          /*sq_repeat*/
     0,                          /*sq_item*/
     0,                          /*sq_slice*/
     0,                          /*sq_ass_item*/
-    0,                           /*sq_ass_slice*/
-    (objobjproc)proxy_contains, /* sq_contains */
+    0,                          /*sq_ass_slice*/
+    proxy_contains,             /* sq_contains */
 };
 
 static PyMappingMethods proxy_as_mapping = {
-    (lenfunc)proxy_length,        /*mp_length*/
+    proxy_length,                 /*mp_length*/
     proxy_getitem,                /*mp_subscript*/
-    (objobjargproc)proxy_setitem, /*mp_ass_subscript*/
+    proxy_setitem,                /*mp_ass_subscript*/
 };
 
 
@@ -725,7 +721,7 @@ _PyWeakref_ProxyType = {
     0,                                  /* tp_getattr */
     0,                                  /* tp_setattr */
     0,                                  /* tp_as_async */
-    (reprfunc)proxy_repr,               /* tp_repr */
+    proxy_repr,                         /* tp_repr */
     &proxy_as_number,                   /* tp_as_number */
     &proxy_as_sequence,                 /* tp_as_sequence */
     &proxy_as_mapping,                  /* tp_as_mapping */
@@ -734,7 +730,7 @@ _PyWeakref_ProxyType = {
     0,                                  /* tp_call */
     proxy_str,                          /* tp_str */
     proxy_getattr,                      /* tp_getattro */
-    (setattrofunc)proxy_setattr,        /* tp_setattro */
+    proxy_setattr,                      /* tp_setattro */
     0,                                  /* tp_as_buffer */
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
     0,                                  /* tp_doc */
@@ -742,9 +738,9 @@ _PyWeakref_ProxyType = {
     (inquiry)gc_clear,                  /* tp_clear */
     proxy_richcompare,                  /* tp_richcompare */
     0,                                  /* tp_weaklistoffset */
-    (getiterfunc)proxy_iter,            /* tp_iter */
-    (iternextfunc)proxy_iternext,       /* tp_iternext */
-        proxy_methods,                      /* tp_methods */
+    proxy_iter,                         /* tp_iter */
+    proxy_iternext,                     /* tp_iternext */
+    proxy_methods,                      /* tp_methods */
 };
 
 
@@ -760,7 +756,7 @@ _PyWeakref_CallableProxyType = {
     0,                                  /* tp_getattr */
     0,                                  /* tp_setattr */
     0,                                  /* tp_as_async */
-    (unaryfunc)proxy_repr,              /* tp_repr */
+    proxy_repr,                         /* tp_repr */
     &proxy_as_number,                   /* tp_as_number */
     &proxy_as_sequence,                 /* tp_as_sequence */
     &proxy_as_mapping,                  /* tp_as_mapping */
@@ -768,7 +764,7 @@ _PyWeakref_CallableProxyType = {
     proxy_call,                         /* tp_call */
     proxy_str,                          /* tp_str */
     proxy_getattr,                      /* tp_getattro */
-    (setattrofunc)proxy_setattr,        /* tp_setattro */
+    proxy_setattr,                      /* tp_setattro */
     0,                                  /* tp_as_buffer */
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
     0,                                  /* tp_doc */
@@ -776,8 +772,8 @@ _PyWeakref_CallableProxyType = {
     (inquiry)gc_clear,                  /* tp_clear */
     proxy_richcompare,                  /* tp_richcompare */
     0,                                  /* tp_weaklistoffset */
-    (getiterfunc)proxy_iter,            /* tp_iter */
-    (iternextfunc)proxy_iternext,       /* tp_iternext */
+    proxy_iter,                         /* tp_iter */
+    proxy_iternext,                     /* tp_iternext */
 };
 
 
@@ -904,6 +900,24 @@ PyWeakref_NewProxy(PyObject *ob, PyObject *callback)
 }
 
 
+int
+PyWeakref_GetRef(PyObject *ref, PyObject **pobj)
+{
+    if (ref == NULL) {
+        *pobj = NULL;
+        PyErr_BadInternalCall();
+        return -1;
+    }
+    if (!PyWeakref_Check(ref)) {
+        *pobj = NULL;
+        PyErr_SetString(PyExc_TypeError, "expected a weakref");
+        return -1;
+    }
+    *pobj = _PyWeakref_GET_REF(ref);
+    return (*pobj != NULL);
+}
+
+
 PyObject *
 PyWeakref_GetObject(PyObject *ref)
 {
@@ -911,7 +925,12 @@ PyWeakref_GetObject(PyObject *ref)
         PyErr_BadInternalCall();
         return NULL;
     }
-    return PyWeakref_GET_OBJECT(ref);
+    PyObject *obj = _PyWeakref_GET_REF(ref);
+    if (obj == NULL) {
+        return Py_None;
+    }
+    Py_DECREF(obj);
+    return obj;  // borrowed reference
 }
 
 /* Note that there's an inlined copy-paste of handle_callback() in gcmodule.c's
diff --git a/PC/_msi.c b/PC/_msi.c
deleted file mode 100644
index b104e3c6ef548c..00000000000000
--- a/PC/_msi.c
+++ /dev/null
@@ -1,1312 +0,0 @@
-/* Helper library for MSI creation with Python.
- * Copyright (C) 2005 Martin v. Löwis
- * Licensed to PSF under a contributor agreement.
- */
-
-#include <Python.h>
-#include <fci.h>
-#include <fcntl.h>
-#include <windows.h>
-#include <msi.h>
-#include <msiquery.h>
-#include <msidefs.h>
-#include <rpc.h>
-
-/*[clinic input]
-module _msi
-class _msi.Record "msiobj *" "&record_Type"
-class _msi.SummaryInformation "msiobj *" "&summary_Type"
-class _msi.View "msiobj *" "&msiview_Type"
-class _msi.Database "msiobj *" "&msidb_Type"
-[clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=89a3605762cf4bdc]*/
-
-static PyObject *MSIError;
-
-/*[clinic input]
-_msi.UuidCreate
-
-Return the string representation of a new unique identifier.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_UuidCreate_impl(PyObject *module)
-/*[clinic end generated code: output=534ecf36f10af98e input=168024ab4b3e832b]*/
-{
-    UUID result;
-    wchar_t *cresult;
-    PyObject *oresult;
-
-    /* May return ok, local only, and no address.
-       For local only, the documentation says we still get a uuid.
-       For RPC_S_UUID_NO_ADDRESS, it's not clear whether we can
-       use the result. */
-    if (UuidCreate(&result) == RPC_S_UUID_NO_ADDRESS) {
-        PyErr_SetString(PyExc_NotImplementedError, "processing 'no address' result");
-        return NULL;
-    }
-
-    if (UuidToStringW(&result, &cresult) == RPC_S_OUT_OF_MEMORY) {
-        PyErr_SetString(PyExc_MemoryError, "out of memory in uuidgen");
-        return NULL;
-    }
-
-    oresult = PyUnicode_FromWideChar(cresult, wcslen(cresult));
-    RpcStringFreeW(&cresult);
-    return oresult;
-
-}
-
-/* Helper for converting file names from UTF-8 to wchat_t*.  */
-static wchar_t *
-utf8_to_wchar(const char *s, int *err)
-{
-    PyObject *obj = PyUnicode_FromString(s);
-    if (obj == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_MemoryError)) {
-            *err = ENOMEM;
-        }
-        else {
-            *err = EINVAL;
-        }
-        PyErr_Clear();
-        return NULL;
-    }
-    wchar_t *ws = PyUnicode_AsWideCharString(obj, NULL);
-    if (ws == NULL) {
-        *err = ENOMEM;
-        PyErr_Clear();
-    }
-    Py_DECREF(obj);
-    return ws;
-}
-
-/* FCI callback functions */
-
-static FNFCIALLOC(cb_alloc)
-{
-    return PyMem_RawMalloc(cb);
-}
-
-static FNFCIFREE(cb_free)
-{
-    PyMem_RawFree(memory);
-}
-
-static FNFCIOPEN(cb_open)
-{
-    wchar_t *ws = utf8_to_wchar(pszFile, err);
-    if (ws == NULL) {
-        return -1;
-    }
-    int result = _wopen(ws, oflag | O_NOINHERIT, pmode);
-    PyMem_Free(ws);
-    if (result == -1)
-        *err = errno;
-    return result;
-}
-
-static FNFCIREAD(cb_read)
-{
-    UINT result = (UINT)_read((int)hf, memory, cb);
-    if (result != cb)
-        *err = errno;
-    return result;
-}
-
-static FNFCIWRITE(cb_write)
-{
-    UINT result = (UINT)_write((int)hf, memory, cb);
-    if (result != cb)
-        *err = errno;
-    return result;
-}
-
-static FNFCICLOSE(cb_close)
-{
-    int result = _close((int)hf);
-    if (result != 0)
-        *err = errno;
-    return result;
-}
-
-static FNFCISEEK(cb_seek)
-{
-    long result = (long)_lseek((int)hf, dist, seektype);
-    if (result == -1)
-        *err = errno;
-    return result;
-}
-
-static FNFCIDELETE(cb_delete)
-{
-    wchar_t *ws = utf8_to_wchar(pszFile, err);
-    if (ws == NULL) {
-        return -1;
-    }
-    int result = _wremove(ws);
-    PyMem_Free(ws);
-    if (result != 0)
-        *err = errno;
-    return result;
-}
-
-static FNFCIFILEPLACED(cb_fileplaced)
-{
-    return 0;
-}
-
-static FNFCIGETTEMPFILE(cb_gettempfile)
-{
-    char *name = _tempnam("", "tmp");
-    if ((name != NULL) && ((int)strlen(name) < cbTempName)) {
-        strcpy(pszTempName, name);
-        free(name);
-        return TRUE;
-    }
-
-    if (name) free(name);
-    return FALSE;
-}
-
-static FNFCISTATUS(cb_status)
-{
-    if (pv) {
-        PyObject *result = PyObject_CallMethod(pv, "status", "iii", typeStatus, cb1, cb2);
-        if (result == NULL)
-            return -1;
-        Py_DECREF(result);
-    }
-    return 0;
-}
-
-static FNFCIGETNEXTCABINET(cb_getnextcabinet)
-{
-    if (pv) {
-        PyObject *result = PyObject_CallMethod(pv, "getnextcabinet", "i", pccab->iCab);
-        if (result == NULL)
-            return -1;
-        if (!PyBytes_Check(result)) {
-            PyErr_Format(PyExc_TypeError,
-                "Incorrect return type %s from getnextcabinet",
-                Py_TYPE(result)->tp_name);
-            Py_DECREF(result);
-            return FALSE;
-        }
-        strncpy(pccab->szCab, PyBytes_AsString(result), sizeof(pccab->szCab));
-        return TRUE;
-    }
-    return FALSE;
-}
-
-static FNFCIGETOPENINFO(cb_getopeninfo)
-{
-    BY_HANDLE_FILE_INFORMATION bhfi;
-    FILETIME filetime;
-    HANDLE handle;
-
-    wchar_t *ws = utf8_to_wchar(pszName, err);
-    if (ws == NULL) {
-        return -1;
-    }
-
-    /* Need Win32 handle to get time stamps */
-    handle = CreateFileW(ws, GENERIC_READ, FILE_SHARE_READ, NULL,
-        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
-    if (handle == INVALID_HANDLE_VALUE) {
-        PyMem_Free(ws);
-        return -1;
-    }
-
-    if (GetFileInformationByHandle(handle, &bhfi) == FALSE) {
-        CloseHandle(handle);
-        PyMem_Free(ws);
-        return -1;
-    }
-
-    FileTimeToLocalFileTime(&bhfi.ftLastWriteTime, &filetime);
-    FileTimeToDosDateTime(&filetime, pdate, ptime);
-
-    *pattribs = (int)(bhfi.dwFileAttributes &
-        (_A_RDONLY | _A_SYSTEM | _A_HIDDEN | _A_ARCH));
-
-    CloseHandle(handle);
-
-    int result = _wopen(ws, _O_RDONLY | _O_BINARY | O_NOINHERIT);
-    PyMem_Free(ws);
-    return result;
-}
-
-/*[clinic input]
-_msi.FCICreate
-    cabname: str
-        the name of the CAB file
-    files: object
-        a list of tuples, each containing the name of the file on disk,
-        and the name of the file inside the CAB file
-    /
-
-Create a new CAB file.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_FCICreate_impl(PyObject *module, const char *cabname, PyObject *files)
-/*[clinic end generated code: output=55dc05728361b799 input=1d2d75fdc8b44b71]*/
-{
-    const char *p;
-    CCAB ccab;
-    HFCI hfci;
-    ERF erf;
-    Py_ssize_t i;
-
-    if (!PyList_Check(files)) {
-        PyErr_SetString(PyExc_TypeError, "FCICreate expects a list");
-        return NULL;
-    }
-
-    ccab.cb = INT_MAX; /* no need to split CAB into multiple media */
-    ccab.cbFolderThresh = 1000000; /* flush directory after this many bytes */
-    ccab.cbReserveCFData = 0;
-    ccab.cbReserveCFFolder = 0;
-    ccab.cbReserveCFHeader = 0;
-
-    ccab.iCab = 1;
-    ccab.iDisk = 1;
-
-    ccab.setID = 0;
-    ccab.szDisk[0] = '\0';
-
-    for (i = 0, p = cabname; *p; p++)
-        if (*p == '\\' || *p == '/')
-            i = p - cabname + 1;
-
-    if (i >= sizeof(ccab.szCabPath) ||
-        strlen(cabname+i) >= sizeof(ccab.szCab)) {
-        PyErr_SetString(PyExc_ValueError, "path name too long");
-        return 0;
-    }
-
-    if (i > 0) {
-        memcpy(ccab.szCabPath, cabname, i);
-        ccab.szCabPath[i] = '\0';
-        strcpy(ccab.szCab, cabname+i);
-    } else {
-        strcpy(ccab.szCabPath, ".\\");
-        strcpy(ccab.szCab, cabname);
-    }
-
-    hfci = FCICreate(&erf, cb_fileplaced, cb_alloc, cb_free,
-        cb_open, cb_read, cb_write, cb_close, cb_seek, cb_delete,
-        cb_gettempfile, &ccab, NULL);
-
-    if (hfci == NULL) {
-        PyErr_Format(PyExc_ValueError, "FCI error %d", erf.erfOper);
-        return NULL;
-    }
-
-    for (i=0; i < PyList_GET_SIZE(files); i++) {
-        PyObject *item = PyList_GET_ITEM(files, i);
-        char *filename, *cabname;
-
-        if (!PyArg_ParseTuple(item, "ss", &filename, &cabname)) {
-            PyErr_SetString(PyExc_TypeError, "FCICreate expects a list of tuples containing two strings");
-            FCIDestroy(hfci);
-            return NULL;
-        }
-
-        if (!FCIAddFile(hfci, filename, cabname, FALSE,
-            cb_getnextcabinet, cb_status, cb_getopeninfo,
-            tcompTYPE_MSZIP))
-            goto err;
-    }
-
-    if (!FCIFlushCabinet(hfci, FALSE, cb_getnextcabinet, cb_status))
-        goto err;
-
-    if (!FCIDestroy(hfci))
-        goto err;
-
-    Py_RETURN_NONE;
-err:
-    if(erf.fError)
-        PyErr_Format(PyExc_ValueError, "FCI error %d", erf.erfOper); /* XXX better error type */
-    else
-        PyErr_SetString(PyExc_ValueError, "FCI general error");
-
-    FCIDestroy(hfci);
-    return NULL;
-}
-
-typedef struct msiobj{
-    PyObject_HEAD
-    MSIHANDLE h;
-}msiobj;
-
-static void
-msiobj_dealloc(msiobj* msidb)
-{
-    MsiCloseHandle(msidb->h);
-    msidb->h = 0;
-    PyObject_Free(msidb);
-}
-
-static PyObject*
-msierror(int status)
-{
-    int code;
-    char buf[2000];
-    char *res = buf;
-    DWORD size = Py_ARRAY_LENGTH(buf);
-    MSIHANDLE err = MsiGetLastErrorRecord();
-
-    if (err == 0) {
-        switch(status) {
-        case ERROR_ACCESS_DENIED:
-            PyErr_SetString(MSIError, "access denied");
-            return NULL;
-        case ERROR_FUNCTION_FAILED:
-            PyErr_SetString(MSIError, "function failed");
-            return NULL;
-        case ERROR_INVALID_DATA:
-            PyErr_SetString(MSIError, "invalid data");
-            return NULL;
-        case ERROR_INVALID_HANDLE:
-            PyErr_SetString(MSIError, "invalid handle");
-            return NULL;
-        case ERROR_INVALID_STATE:
-            PyErr_SetString(MSIError, "invalid state");
-            return NULL;
-        case ERROR_INVALID_PARAMETER:
-            PyErr_SetString(MSIError, "invalid parameter");
-            return NULL;
-        case ERROR_OPEN_FAILED:
-            PyErr_SetString(MSIError, "open failed");
-            return NULL;
-        case ERROR_CREATE_FAILED:
-            PyErr_SetString(MSIError, "create failed");
-            return NULL;
-        default:
-            PyErr_Format(MSIError, "unknown error %x", status);
-            return NULL;
-        }
-    }
-
-    code = MsiRecordGetInteger(err, 1); /* XXX code */
-    if (MsiFormatRecord(0, err, res, &size) == ERROR_MORE_DATA) {
-        res = malloc(size+1);
-        if (res == NULL) {
-            MsiCloseHandle(err);
-            return PyErr_NoMemory();
-        }
-        MsiFormatRecord(0, err, res, &size);
-        res[size]='\0';
-    }
-    MsiCloseHandle(err);
-    PyErr_SetString(MSIError, res);
-    if (res != buf)
-        free(res);
-    return NULL;
-}
-
-#include "clinic/_msi.c.h"
-
-/*[clinic input]
-_msi.Database.Close
-
-Close the database object.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Database_Close_impl(msiobj *self)
-/*[clinic end generated code: output=ddf2d7712ea804f1 input=104330ce4a486187]*/
-{
-    int status;
-    if ((status = MsiCloseHandle(self->h)) != ERROR_SUCCESS) {
-        return msierror(status);
-    }
-    self->h = 0;
-    Py_RETURN_NONE;
-}
-
-/*************************** Record objects **********************/
-
-/*[clinic input]
-_msi.Record.GetFieldCount
-
-Return the number of fields of the record.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_GetFieldCount_impl(msiobj *self)
-/*[clinic end generated code: output=112795079c904398 input=5fb9d4071b28897b]*/
-{
-    return PyLong_FromLong(MsiRecordGetFieldCount(self->h));
-}
-
-/*[clinic input]
-_msi.Record.GetInteger
-    field: unsigned_int(bitwise=True)
-    /
-
-Return the value of field as an integer where possible.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_GetInteger_impl(msiobj *self, unsigned int field)
-/*[clinic end generated code: output=7174ebb6e8ed1c79 input=d19209947e2bfe61]*/
-{
-    int status;
-
-    status = MsiRecordGetInteger(self->h, field);
-    if (status == MSI_NULL_INTEGER){
-        PyErr_SetString(MSIError, "could not convert record field to integer");
-        return NULL;
-    }
-    return PyLong_FromLong((long) status);
-}
-
-/*[clinic input]
-_msi.Record.GetString
-    field: unsigned_int(bitwise=True)
-    /
-
-Return the value of field as a string where possible.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_GetString_impl(msiobj *self, unsigned int field)
-/*[clinic end generated code: output=f670d1b484cfa47c input=ffa11f21450b77d8]*/
-{
-    unsigned int status;
-    WCHAR buf[2000];
-    WCHAR *res = buf;
-    DWORD size = Py_ARRAY_LENGTH(buf);
-    PyObject* string;
-
-    status = MsiRecordGetStringW(self->h, field, res, &size);
-    if (status == ERROR_MORE_DATA) {
-        res = (WCHAR*) malloc((size + 1)*sizeof(WCHAR));
-        if (res == NULL)
-            return PyErr_NoMemory();
-        status = MsiRecordGetStringW(self->h, field, res, &size);
-    }
-    if (status != ERROR_SUCCESS)
-        return msierror((int) status);
-    string = PyUnicode_FromWideChar(res, size);
-    if (buf != res)
-        free(res);
-    return string;
-}
-
-/*[clinic input]
-_msi.Record.ClearData
-
-Set all fields of the record to 0.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_ClearData_impl(msiobj *self)
-/*[clinic end generated code: output=1891467214b977f4 input=2a911c95aaded102]*/
-{
-    int status = MsiRecordClearData(self->h);
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-_msi.Record.SetString
-    field: int
-    value: Py_UNICODE
-    /
-
-Set field to a string value.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_SetString_impl(msiobj *self, int field, const Py_UNICODE *value)
-/*[clinic end generated code: output=2e37505b0f11f985 input=fb8ec70a2a6148e0]*/
-{
-    int status;
-
-    if ((status = MsiRecordSetStringW(self->h, field, value)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-_msi.Record.SetStream
-    field: int
-    value: Py_UNICODE
-    /
-
-Set field to the contents of the file named value.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_SetStream_impl(msiobj *self, int field, const Py_UNICODE *value)
-/*[clinic end generated code: output=442facac16913b48 input=a07aa19b865e8292]*/
-{
-    int status;
-
-    if ((status = MsiRecordSetStreamW(self->h, field, value)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-_msi.Record.SetInteger
-    field: int
-    value: int
-    /
-
-Set field to an integer value.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Record_SetInteger_impl(msiobj *self, int field, int value)
-/*[clinic end generated code: output=669e8647775d0ce7 input=c571aa775e7e451b]*/
-{
-    int status;
-
-    if ((status = MsiRecordSetInteger(self->h, field, value)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-
-
-static PyMethodDef record_methods[] = {
-    _MSI_RECORD_GETFIELDCOUNT_METHODDEF
-    _MSI_RECORD_GETINTEGER_METHODDEF
-    _MSI_RECORD_GETSTRING_METHODDEF
-    _MSI_RECORD_SETSTRING_METHODDEF
-    _MSI_RECORD_SETSTREAM_METHODDEF
-    _MSI_RECORD_SETINTEGER_METHODDEF
-    _MSI_RECORD_CLEARDATA_METHODDEF
-    { NULL, NULL }
-};
-
-static PyTypeObject record_Type = {
-        PyVarObject_HEAD_INIT(NULL, 0)
-        "_msi.Record",          /*tp_name*/
-        sizeof(msiobj), /*tp_basicsize*/
-        0,                      /*tp_itemsize*/
-        /* methods */
-        (destructor)msiobj_dealloc, /*tp_dealloc*/
-        0,                      /*tp_vectorcall_offset*/
-        0,                      /*tp_getattr*/
-        0,                      /*tp_setattr*/
-        0,                      /*tp_as_async*/
-        0,                      /*tp_repr*/
-        0,                      /*tp_as_number*/
-        0,                      /*tp_as_sequence*/
-        0,                      /*tp_as_mapping*/
-        0,                      /*tp_hash*/
-        0,                      /*tp_call*/
-        0,                      /*tp_str*/
-        PyObject_GenericGetAttr,/*tp_getattro*/
-        PyObject_GenericSetAttr,/*tp_setattro*/
-        0,                      /*tp_as_buffer*/
-        Py_TPFLAGS_DEFAULT,     /*tp_flags*/
-        0,                      /*tp_doc*/
-        0,                      /*tp_traverse*/
-        0,                      /*tp_clear*/
-        0,                      /*tp_richcompare*/
-        0,                      /*tp_weaklistoffset*/
-        0,                      /*tp_iter*/
-        0,                      /*tp_iternext*/
-        record_methods,           /*tp_methods*/
-        0,                      /*tp_members*/
-        0,                      /*tp_getset*/
-        0,                      /*tp_base*/
-        0,                      /*tp_dict*/
-        0,                      /*tp_descr_get*/
-        0,                      /*tp_descr_set*/
-        0,                      /*tp_dictoffset*/
-        0,                      /*tp_init*/
-        0,                      /*tp_alloc*/
-        0,                      /*tp_new*/
-        0,                      /*tp_free*/
-        0,                      /*tp_is_gc*/
-};
-
-static PyObject*
-record_new(MSIHANDLE h)
-{
-    msiobj *result = PyObject_New(struct msiobj, &record_Type);
-
-    if (!result) {
-        MsiCloseHandle(h);
-        return NULL;
-    }
-
-    result->h = h;
-    return (PyObject*)result;
-}
-
-/*************************** SummaryInformation objects **************/
-
-/*[clinic input]
-_msi.SummaryInformation.GetProperty
-    field: int
-        the name of the property, one of the PID_* constants
-    /
-
-Return a property of the summary.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_SummaryInformation_GetProperty_impl(msiobj *self, int field)
-/*[clinic end generated code: output=f8946a33ee14f6ef input=f8dfe2c890d6cb8b]*/
-{
-    int status;
-    PyObject *result;
-    UINT type;
-    INT ival;
-    FILETIME fval;
-    char sbuf[1000];
-    char *sval = sbuf;
-    DWORD ssize = sizeof(sbuf);
-
-    status = MsiSummaryInfoGetProperty(self->h, field, &type, &ival,
-        &fval, sval, &ssize);
-    if (status == ERROR_MORE_DATA) {
-        ssize++;
-        sval = malloc(ssize);
-        if (sval == NULL) {
-            return PyErr_NoMemory();
-        }
-        status = MsiSummaryInfoGetProperty(self->h, field, &type, &ival,
-            &fval, sval, &ssize);
-    }
-    if (status != ERROR_SUCCESS) {
-        return msierror(status);
-    }
-
-    switch(type) {
-        case VT_I2:
-        case VT_I4:
-            result = PyLong_FromLong(ival);
-            break;
-        case VT_FILETIME:
-            PyErr_SetString(PyExc_NotImplementedError, "FILETIME result");
-            result = NULL;
-            break;
-        case VT_LPSTR:
-            result = PyBytes_FromStringAndSize(sval, ssize);
-            break;
-        case VT_EMPTY:
-            result = Py_NewRef(Py_None);
-            break;
-        default:
-            PyErr_Format(PyExc_NotImplementedError, "result of type %d", type);
-            result = NULL;
-            break;
-    }
-    if (sval != sbuf)
-        free(sval);
-    return result;
-}
-
-/*[clinic input]
-_msi.SummaryInformation.GetPropertyCount
-
-Return the number of summary properties.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_SummaryInformation_GetPropertyCount_impl(msiobj *self)
-/*[clinic end generated code: output=68e94b2aeee92b3d input=2e71e985586d82dc]*/
-{
-    int status;
-    UINT result;
-
-    status = MsiSummaryInfoGetPropertyCount(self->h, &result);
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-
-    return PyLong_FromLong(result);
-}
-
-/*[clinic input]
-_msi.SummaryInformation.SetProperty
-    field: int
-        the name of the property, one of the PID_* constants
-    value as data: object
-        the new value of the property (integer or string)
-    /
-
-Set a property.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_SummaryInformation_SetProperty_impl(msiobj *self, int field,
-                                         PyObject *data)
-/*[clinic end generated code: output=3d4692c8984bb675 input=f2a7811b905abbed]*/
-{
-    int status;
-
-    if (PyUnicode_Check(data)) {
-        WCHAR *value = PyUnicode_AsWideCharString(data, NULL);
-        if (value == NULL) {
-            return NULL;
-        }
-        status = MsiSummaryInfoSetPropertyW(self->h, field, VT_LPSTR,
-            0, NULL, value);
-        PyMem_Free(value);
-    } else if (PyLong_CheckExact(data)) {
-        long value = PyLong_AsLong(data);
-        if (value == -1 && PyErr_Occurred()) {
-            return NULL;
-        }
-        status = MsiSummaryInfoSetProperty(self->h, field, VT_I4,
-            value, NULL, NULL);
-    } else {
-        PyErr_SetString(PyExc_TypeError, "unsupported type");
-        return NULL;
-    }
-
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-
-/*[clinic input]
-_msi.SummaryInformation.Persist
-
-Write the modified properties to the summary information stream.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_SummaryInformation_Persist_impl(msiobj *self)
-/*[clinic end generated code: output=c564bd17f5e122c9 input=e3dda9d530095ef7]*/
-{
-    int status;
-
-    status = MsiSummaryInfoPersist(self->h);
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-    Py_RETURN_NONE;
-}
-
-static PyMethodDef summary_methods[] = {
-    _MSI_SUMMARYINFORMATION_GETPROPERTY_METHODDEF
-    _MSI_SUMMARYINFORMATION_GETPROPERTYCOUNT_METHODDEF
-    _MSI_SUMMARYINFORMATION_SETPROPERTY_METHODDEF
-    _MSI_SUMMARYINFORMATION_PERSIST_METHODDEF
-    { NULL, NULL }
-};
-
-static PyTypeObject summary_Type = {
-        PyVarObject_HEAD_INIT(NULL, 0)
-        "_msi.SummaryInformation",              /*tp_name*/
-        sizeof(msiobj), /*tp_basicsize*/
-        0,                      /*tp_itemsize*/
-        /* methods */
-        (destructor)msiobj_dealloc, /*tp_dealloc*/
-        0,                      /*tp_vectorcall_offset*/
-        0,                      /*tp_getattr*/
-        0,                      /*tp_setattr*/
-        0,                      /*tp_as_async*/
-        0,                      /*tp_repr*/
-        0,                      /*tp_as_number*/
-        0,                      /*tp_as_sequence*/
-        0,                      /*tp_as_mapping*/
-        0,                      /*tp_hash*/
-        0,                      /*tp_call*/
-        0,                      /*tp_str*/
-        PyObject_GenericGetAttr,/*tp_getattro*/
-        PyObject_GenericSetAttr,/*tp_setattro*/
-        0,                      /*tp_as_buffer*/
-        Py_TPFLAGS_DEFAULT,     /*tp_flags*/
-        0,                      /*tp_doc*/
-        0,                      /*tp_traverse*/
-        0,                      /*tp_clear*/
-        0,                      /*tp_richcompare*/
-        0,                      /*tp_weaklistoffset*/
-        0,                      /*tp_iter*/
-        0,                      /*tp_iternext*/
-        summary_methods,        /*tp_methods*/
-        0,                      /*tp_members*/
-        0,                      /*tp_getset*/
-        0,                      /*tp_base*/
-        0,                      /*tp_dict*/
-        0,                      /*tp_descr_get*/
-        0,                      /*tp_descr_set*/
-        0,                      /*tp_dictoffset*/
-        0,                      /*tp_init*/
-        0,                      /*tp_alloc*/
-        0,                      /*tp_new*/
-        0,                      /*tp_free*/
-        0,                      /*tp_is_gc*/
-};
-
-/*************************** View objects **************/
-
-/*[clinic input]
-_msi.View.Execute
-    params as oparams: object
-        a record describing actual values of the parameter tokens
-        in the query or None
-    /
-
-Execute the SQL query of the view.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_View_Execute(msiobj *self, PyObject *oparams)
-/*[clinic end generated code: output=f0f65fd2900bcb4e input=cb163a15d453348e]*/
-{
-    int status;
-    MSIHANDLE params = 0;
-
-    if (oparams != Py_None) {
-        if (!Py_IS_TYPE(oparams, &record_Type)) {
-            PyErr_SetString(PyExc_TypeError, "Execute argument must be a record");
-            return NULL;
-        }
-        params = ((msiobj*)oparams)->h;
-    }
-
-    status = MsiViewExecute(self->h, params);
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-_msi.View.Fetch
-
-Return a result record of the query.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_View_Fetch_impl(msiobj *self)
-/*[clinic end generated code: output=ba154a3794537d4e input=7f3e3d06c449001c]*/
-{
-    int status;
-    MSIHANDLE result;
-
-    status = MsiViewFetch(self->h, &result);
-    if (status == ERROR_NO_MORE_ITEMS) {
-        Py_RETURN_NONE;
-    } else if (status != ERROR_SUCCESS) {
-        return msierror(status);
-    }
-
-    return record_new(result);
-}
-
-/*[clinic input]
-_msi.View.GetColumnInfo
-    kind: int
-        MSICOLINFO_NAMES or MSICOLINFO_TYPES
-    /
-
-Return a record describing the columns of the view.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_View_GetColumnInfo_impl(msiobj *self, int kind)
-/*[clinic end generated code: output=e7c1697db9403660 input=afedb892bf564a3b]*/
-{
-    int status;
-    MSIHANDLE result;
-
-    if ((status = MsiViewGetColumnInfo(self->h, kind, &result)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    return record_new(result);
-}
-
-/*[clinic input]
-_msi.View.Modify
-    kind: int
-        one of the MSIMODIFY_* constants
-    data: object
-        a record describing the new data
-    /
-
-Modify the view.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_View_Modify_impl(msiobj *self, int kind, PyObject *data)
-/*[clinic end generated code: output=69aaf3ce8ddac0ba input=2828de22de0d47b4]*/
-{
-    int status;
-
-    if (!Py_IS_TYPE(data, &record_Type)) {
-        PyErr_SetString(PyExc_TypeError, "Modify expects a record object");
-        return NULL;
-    }
-
-    if ((status = MsiViewModify(self->h, kind, ((msiobj*)data)->h)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-_msi.View.Close
-
-Close the view.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_View_Close_impl(msiobj *self)
-/*[clinic end generated code: output=488f7b8645ca104a input=de6927d1308c401c]*/
-{
-    int status;
-
-    if ((status = MsiViewClose(self->h)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-static PyMethodDef view_methods[] = {
-    _MSI_VIEW_EXECUTE_METHODDEF
-    _MSI_VIEW_GETCOLUMNINFO_METHODDEF
-    _MSI_VIEW_FETCH_METHODDEF
-    _MSI_VIEW_MODIFY_METHODDEF
-    _MSI_VIEW_CLOSE_METHODDEF
-    { NULL, NULL }
-};
-
-static PyTypeObject msiview_Type = {
-        PyVarObject_HEAD_INIT(NULL, 0)
-        "_msi.View",            /*tp_name*/
-        sizeof(msiobj), /*tp_basicsize*/
-        0,                      /*tp_itemsize*/
-        /* methods */
-        (destructor)msiobj_dealloc, /*tp_dealloc*/
-        0,                      /*tp_vectorcall_offset*/
-        0,                      /*tp_getattr*/
-        0,                      /*tp_setattr*/
-        0,                      /*tp_as_async*/
-        0,                      /*tp_repr*/
-        0,                      /*tp_as_number*/
-        0,                      /*tp_as_sequence*/
-        0,                      /*tp_as_mapping*/
-        0,                      /*tp_hash*/
-        0,                      /*tp_call*/
-        0,                      /*tp_str*/
-        PyObject_GenericGetAttr,/*tp_getattro*/
-        PyObject_GenericSetAttr,/*tp_setattro*/
-        0,                      /*tp_as_buffer*/
-        Py_TPFLAGS_DEFAULT,     /*tp_flags*/
-        0,                      /*tp_doc*/
-        0,                      /*tp_traverse*/
-        0,                      /*tp_clear*/
-        0,                      /*tp_richcompare*/
-        0,                      /*tp_weaklistoffset*/
-        0,                      /*tp_iter*/
-        0,                      /*tp_iternext*/
-        view_methods,           /*tp_methods*/
-        0,                      /*tp_members*/
-        0,                      /*tp_getset*/
-        0,                      /*tp_base*/
-        0,                      /*tp_dict*/
-        0,                      /*tp_descr_get*/
-        0,                      /*tp_descr_set*/
-        0,                      /*tp_dictoffset*/
-        0,                      /*tp_init*/
-        0,                      /*tp_alloc*/
-        0,                      /*tp_new*/
-        0,                      /*tp_free*/
-        0,                      /*tp_is_gc*/
-};
-
-/*************************** Database objects **************/
-
-/*[clinic input]
-_msi.Database.OpenView
-    sql: Py_UNICODE
-        the SQL statement to execute
-    /
-
-Return a view object.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Database_OpenView_impl(msiobj *self, const Py_UNICODE *sql)
-/*[clinic end generated code: output=e712e6a11229abfd input=50f1771f37e500df]*/
-{
-    int status;
-    MSIHANDLE hView;
-    msiobj *result;
-
-    if ((status = MsiDatabaseOpenViewW(self->h, sql, &hView)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    result = PyObject_New(struct msiobj, &msiview_Type);
-    if (!result) {
-        MsiCloseHandle(hView);
-        return NULL;
-    }
-
-    result->h = hView;
-    return (PyObject*)result;
-}
-
-/*[clinic input]
-_msi.Database.Commit
-
-Commit the changes pending in the current transaction.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Database_Commit_impl(msiobj *self)
-/*[clinic end generated code: output=f33021feb8b0cdd8 input=375bb120d402266d]*/
-{
-    int status;
-
-    if ((status = MsiDatabaseCommit(self->h)) != ERROR_SUCCESS)
-        return msierror(status);
-
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-_msi.Database.GetSummaryInformation
-    count: int
-        the maximum number of updated values
-    /
-
-Return a new summary information object.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_Database_GetSummaryInformation_impl(msiobj *self, int count)
-/*[clinic end generated code: output=781e51a4ea4da847 input=18a899ead6521735]*/
-{
-    int status;
-    MSIHANDLE result;
-    msiobj *oresult;
-
-    status = MsiGetSummaryInformation(self->h, NULL, count, &result);
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-
-    oresult = PyObject_New(struct msiobj, &summary_Type);
-    if (!oresult) {
-        MsiCloseHandle(result);
-        return NULL;
-    }
-
-    oresult->h = result;
-    return (PyObject*)oresult;
-}
-
-static PyMethodDef db_methods[] = {
-    _MSI_DATABASE_OPENVIEW_METHODDEF
-    _MSI_DATABASE_COMMIT_METHODDEF
-    _MSI_DATABASE_GETSUMMARYINFORMATION_METHODDEF
-    _MSI_DATABASE_CLOSE_METHODDEF
-    { NULL, NULL }
-};
-
-static PyTypeObject msidb_Type = {
-        PyVarObject_HEAD_INIT(NULL, 0)
-        "_msi.Database",                /*tp_name*/
-        sizeof(msiobj), /*tp_basicsize*/
-        0,                      /*tp_itemsize*/
-        /* methods */
-        (destructor)msiobj_dealloc, /*tp_dealloc*/
-        0,                      /*tp_vectorcall_offset*/
-        0,                      /*tp_getattr*/
-        0,                      /*tp_setattr*/
-        0,                      /*tp_as_async*/
-        0,                      /*tp_repr*/
-        0,                      /*tp_as_number*/
-        0,                      /*tp_as_sequence*/
-        0,                      /*tp_as_mapping*/
-        0,                      /*tp_hash*/
-        0,                      /*tp_call*/
-        0,                      /*tp_str*/
-        PyObject_GenericGetAttr,/*tp_getattro*/
-        PyObject_GenericSetAttr,/*tp_setattro*/
-        0,                      /*tp_as_buffer*/
-        Py_TPFLAGS_DEFAULT,     /*tp_flags*/
-        0,                      /*tp_doc*/
-        0,                      /*tp_traverse*/
-        0,                      /*tp_clear*/
-        0,                      /*tp_richcompare*/
-        0,                      /*tp_weaklistoffset*/
-        0,                      /*tp_iter*/
-        0,                      /*tp_iternext*/
-        db_methods,             /*tp_methods*/
-        0,                      /*tp_members*/
-        0,                      /*tp_getset*/
-        0,                      /*tp_base*/
-        0,                      /*tp_dict*/
-        0,                      /*tp_descr_get*/
-        0,                      /*tp_descr_set*/
-        0,                      /*tp_dictoffset*/
-        0,                      /*tp_init*/
-        0,                      /*tp_alloc*/
-        0,                      /*tp_new*/
-        0,                      /*tp_free*/
-        0,                      /*tp_is_gc*/
-};
-
-#define Py_NOT_PERSIST(x, flag)                        \
-    (x != (SIZE_T)(flag) &&                      \
-    x != ((SIZE_T)(flag) | MSIDBOPEN_PATCHFILE))
-
-#define Py_INVALID_PERSIST(x)                \
-    (Py_NOT_PERSIST(x, MSIDBOPEN_READONLY) &&  \
-    Py_NOT_PERSIST(x, MSIDBOPEN_TRANSACT) &&   \
-    Py_NOT_PERSIST(x, MSIDBOPEN_DIRECT) &&     \
-    Py_NOT_PERSIST(x, MSIDBOPEN_CREATE) &&     \
-    Py_NOT_PERSIST(x, MSIDBOPEN_CREATEDIRECT))
-
-/*[clinic input]
-_msi.OpenDatabase
-    path: Py_UNICODE
-        the file name of the MSI file
-    persist: int
-        the persistence mode
-    /
-
-Return a new database object.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_OpenDatabase_impl(PyObject *module, const Py_UNICODE *path, int persist)
-/*[clinic end generated code: output=d34b7202b745de05 input=1300f3b97659559b]*/
-{
-    int status;
-    MSIHANDLE h;
-    msiobj *result;
-
-    /* We need to validate that persist is a valid MSIDBOPEN_* value. Otherwise,
-       MsiOpenDatabase may treat the value as a pointer, leading to unexpected
-       behavior. */
-    if (Py_INVALID_PERSIST(persist))
-        return msierror(ERROR_INVALID_PARAMETER);
-    status = MsiOpenDatabaseW(path, (LPCWSTR)(SIZE_T)persist, &h);
-    if (status != ERROR_SUCCESS)
-        return msierror(status);
-
-    result = PyObject_New(struct msiobj, &msidb_Type);
-    if (!result) {
-        MsiCloseHandle(h);
-        return NULL;
-    }
-    result->h = h;
-    return (PyObject*)result;
-}
-
-/*[clinic input]
-_msi.CreateRecord
-    count: int
-        the number of fields of the record
-    /
-
-Return a new record object.
-[clinic start generated code]*/
-
-static PyObject *
-_msi_CreateRecord_impl(PyObject *module, int count)
-/*[clinic end generated code: output=0ba0a00beea3e99e input=53f17d5b5d9b077d]*/
-{
-    MSIHANDLE h;
-
-    h = MsiCreateRecord(count);
-    if (h == 0)
-        return msierror(0);
-
-    return record_new(h);
-}
-
-
-static PyMethodDef msi_methods[] = {
-        _MSI_UUIDCREATE_METHODDEF
-        _MSI_FCICREATE_METHODDEF
-        _MSI_OPENDATABASE_METHODDEF
-        _MSI_CREATERECORD_METHODDEF
-        {NULL,          NULL}           /* sentinel */
-};
-
-static char msi_doc[] = "Documentation";
-
-
-static struct PyModuleDef _msimodule = {
-        PyModuleDef_HEAD_INIT,
-        "_msi",
-        msi_doc,
-        -1,
-        msi_methods,
-        NULL,
-        NULL,
-        NULL,
-        NULL
-};
-
-PyMODINIT_FUNC
-PyInit__msi(void)
-{
-    PyObject *m;
-
-    m = PyModule_Create(&_msimodule);
-    if (m == NULL)
-        return NULL;
-
-    PyModule_AddIntConstant(m, "MSIDBOPEN_CREATEDIRECT", (long)(SIZE_T)MSIDBOPEN_CREATEDIRECT);
-    PyModule_AddIntConstant(m, "MSIDBOPEN_CREATE", (long)(SIZE_T)MSIDBOPEN_CREATE);
-    PyModule_AddIntConstant(m, "MSIDBOPEN_DIRECT", (long)(SIZE_T)MSIDBOPEN_DIRECT);
-    PyModule_AddIntConstant(m, "MSIDBOPEN_READONLY", (long)(SIZE_T)MSIDBOPEN_READONLY);
-    PyModule_AddIntConstant(m, "MSIDBOPEN_TRANSACT", (long)(SIZE_T)MSIDBOPEN_TRANSACT);
-    PyModule_AddIntConstant(m, "MSIDBOPEN_PATCHFILE", (long)(SIZE_T)MSIDBOPEN_PATCHFILE);
-
-    PyModule_AddIntMacro(m, MSICOLINFO_NAMES);
-    PyModule_AddIntMacro(m, MSICOLINFO_TYPES);
-
-    PyModule_AddIntMacro(m, MSIMODIFY_SEEK);
-    PyModule_AddIntMacro(m, MSIMODIFY_REFRESH);
-    PyModule_AddIntMacro(m, MSIMODIFY_INSERT);
-    PyModule_AddIntMacro(m, MSIMODIFY_UPDATE);
-    PyModule_AddIntMacro(m, MSIMODIFY_ASSIGN);
-    PyModule_AddIntMacro(m, MSIMODIFY_REPLACE);
-    PyModule_AddIntMacro(m, MSIMODIFY_MERGE);
-    PyModule_AddIntMacro(m, MSIMODIFY_DELETE);
-    PyModule_AddIntMacro(m, MSIMODIFY_INSERT_TEMPORARY);
-    PyModule_AddIntMacro(m, MSIMODIFY_VALIDATE);
-    PyModule_AddIntMacro(m, MSIMODIFY_VALIDATE_NEW);
-    PyModule_AddIntMacro(m, MSIMODIFY_VALIDATE_FIELD);
-    PyModule_AddIntMacro(m, MSIMODIFY_VALIDATE_DELETE);
-
-    PyModule_AddIntMacro(m, PID_CODEPAGE);
-    PyModule_AddIntMacro(m, PID_TITLE);
-    PyModule_AddIntMacro(m, PID_SUBJECT);
-    PyModule_AddIntMacro(m, PID_AUTHOR);
-    PyModule_AddIntMacro(m, PID_KEYWORDS);
-    PyModule_AddIntMacro(m, PID_COMMENTS);
-    PyModule_AddIntMacro(m, PID_TEMPLATE);
-    PyModule_AddIntMacro(m, PID_LASTAUTHOR);
-    PyModule_AddIntMacro(m, PID_REVNUMBER);
-    PyModule_AddIntMacro(m, PID_LASTPRINTED);
-    PyModule_AddIntMacro(m, PID_CREATE_DTM);
-    PyModule_AddIntMacro(m, PID_LASTSAVE_DTM);
-    PyModule_AddIntMacro(m, PID_PAGECOUNT);
-    PyModule_AddIntMacro(m, PID_WORDCOUNT);
-    PyModule_AddIntMacro(m, PID_CHARCOUNT);
-    PyModule_AddIntMacro(m, PID_APPNAME);
-    PyModule_AddIntMacro(m, PID_SECURITY);
-
-    MSIError = PyErr_NewException ("_msi.MSIError", NULL, NULL);
-    if (!MSIError)
-        return NULL;
-    PyModule_AddObject(m, "MSIError", MSIError);
-    return m;
-}
diff --git a/PC/_testconsole.c b/PC/_testconsole.c
index 3221b985d01ba0..1dc0d230c4d7c3 100644
--- a/PC/_testconsole.c
+++ b/PC/_testconsole.c
@@ -35,6 +35,23 @@ PyModuleDef_Slot testconsole_slots[] = {
     {0, NULL},
 };
 
+/*[python input]
+class HANDLE_converter(CConverter):
+    type = 'void *'
+    format_unit = '"_Py_PARSE_UINTPTR"'
+
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
+            {paramname} = PyLong_AsVoidPtr({argname});
+            if (!{paramname} && PyErr_Occurred()) {{{{
+                goto exit;
+            }}}}
+            """,
+            argname=argname)
+[python start generated code]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=380aa5c91076742b]*/
+/*[python end generated code:]*/
+
 /*[clinic input]
 module _testconsole
 
@@ -116,6 +133,7 @@ _testconsole_read_output_impl(PyObject *module, PyObject *file)
     Py_RETURN_NONE;
 }
 
+
 #include "clinic\_testconsole.c.h"
 
 PyMethodDef testconsole_methods[] = {
diff --git a/PC/_wmimodule.cpp b/PC/_wmimodule.cpp
index 310aa86d94d9b6..5ab6dcb032550b 100644
--- a/PC/_wmimodule.cpp
+++ b/PC/_wmimodule.cpp
@@ -8,6 +8,11 @@
 // Version history
 //  2022-08: Initial contribution (Steve Dower)
 
+// clinic/_wmimodule.cpp.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
+#endif
+
 #define _WIN32_DCOM
 #include <Windows.h>
 #include <comdef.h>
@@ -39,6 +44,8 @@ struct _query_data {
     LPCWSTR query;
     HANDLE writePipe;
     HANDLE readPipe;
+    HANDLE initEvent;
+    HANDLE connectEvent;
 };
 
 
@@ -75,12 +82,18 @@ _query_thread(LPVOID param)
             IID_IWbemLocator, (LPVOID *)&locator
         );
     }
+    if (SUCCEEDED(hr) && !SetEvent(data->initEvent)) {
+        hr = HRESULT_FROM_WIN32(GetLastError());
+    }
     if (SUCCEEDED(hr)) {
         hr = locator->ConnectServer(
             bstr_t(L"ROOT\\CIMV2"),
             NULL, NULL, 0, NULL, 0, 0, &services
         );
     }
+    if (SUCCEEDED(hr) && !SetEvent(data->connectEvent)) {
+        hr = HRESULT_FROM_WIN32(GetLastError());
+    }
     if (SUCCEEDED(hr)) {
         hr = CoSetProxyBlanket(
             services, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, NULL,
@@ -184,6 +197,24 @@ _query_thread(LPVOID param)
 }
 
 
+static DWORD
+wait_event(HANDLE event, DWORD timeout)
+{
+    DWORD err = 0;
+    switch (WaitForSingleObject(event, timeout)) {
+    case WAIT_OBJECT_0:
+        break;
+    case WAIT_TIMEOUT:
+        err = WAIT_TIMEOUT;
+        break;
+    default:
+        err = GetLastError();
+        break;
+    }
+    return err;
+}
+
+
 /*[clinic input]
 _wmi.exec_query
 
@@ -226,7 +257,11 @@ _wmi_exec_query_impl(PyObject *module, PyObject *query)
 
     Py_BEGIN_ALLOW_THREADS
 
-    if (!CreatePipe(&data.readPipe, &data.writePipe, NULL, 0)) {
+    data.initEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    data.connectEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!data.initEvent || !data.connectEvent ||
+        !CreatePipe(&data.readPipe, &data.writePipe, NULL, 0))
+    {
         err = GetLastError();
     } else {
         hThread = CreateThread(NULL, 0, _query_thread, (LPVOID*)&data, 0, NULL);
@@ -238,6 +273,17 @@ _wmi_exec_query_impl(PyObject *module, PyObject *query)
         }
     }
 
+    // gh-112278: If current user doesn't have permission to query the WMI, the
+    // function IWbemLocator::ConnectServer will hang for 5 seconds, and there
+    // is no way to specify the timeout. So we use an Event object to simulate
+    // a timeout.  The initEvent will be set after COM initialization, it will
+    // take a longer time when first initialized.  The connectEvent will be set
+    // after connected to WMI.
+    err = wait_event(data.initEvent, 1000);
+    if (!err) {
+        err = wait_event(data.connectEvent, 100);
+    }
+
     while (!err) {
         if (ReadFile(
             data.readPipe,
@@ -260,7 +306,7 @@ _wmi_exec_query_impl(PyObject *module, PyObject *query)
     }
 
     // Allow the thread some time to clean up
-    switch (WaitForSingleObject(hThread, 1000)) {
+    switch (WaitForSingleObject(hThread, 100)) {
     case WAIT_OBJECT_0:
         // Thread ended cleanly
         if (!GetExitCodeThread(hThread, (LPDWORD)&err)) {
@@ -281,6 +327,8 @@ _wmi_exec_query_impl(PyObject *module, PyObject *query)
     }
 
     CloseHandle(hThread);
+    CloseHandle(data.initEvent);
+    CloseHandle(data.connectEvent);
     hThread = NULL;
 
     Py_END_ALLOW_THREADS
diff --git a/PC/clinic/_msi.c.h b/PC/clinic/_msi.c.h
deleted file mode 100644
index c77f0703927e0b..00000000000000
--- a/PC/clinic/_msi.c.h
+++ /dev/null
@@ -1,698 +0,0 @@
-/*[clinic input]
-preserve
-[clinic start generated code]*/
-
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
-PyDoc_STRVAR(_msi_UuidCreate__doc__,
-"UuidCreate($module, /)\n"
-"--\n"
-"\n"
-"Return the string representation of a new unique identifier.");
-
-#define _MSI_UUIDCREATE_METHODDEF    \
-    {"UuidCreate", (PyCFunction)_msi_UuidCreate, METH_NOARGS, _msi_UuidCreate__doc__},
-
-static PyObject *
-_msi_UuidCreate_impl(PyObject *module);
-
-static PyObject *
-_msi_UuidCreate(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_UuidCreate_impl(module);
-}
-
-PyDoc_STRVAR(_msi_FCICreate__doc__,
-"FCICreate($module, cabname, files, /)\n"
-"--\n"
-"\n"
-"Create a new CAB file.\n"
-"\n"
-"  cabname\n"
-"    the name of the CAB file\n"
-"  files\n"
-"    a list of tuples, each containing the name of the file on disk,\n"
-"    and the name of the file inside the CAB file");
-
-#define _MSI_FCICREATE_METHODDEF    \
-    {"FCICreate", _PyCFunction_CAST(_msi_FCICreate), METH_FASTCALL, _msi_FCICreate__doc__},
-
-static PyObject *
-_msi_FCICreate_impl(PyObject *module, const char *cabname, PyObject *files);
-
-static PyObject *
-_msi_FCICreate(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    const char *cabname;
-    PyObject *files;
-
-    if (!_PyArg_CheckPositional("FCICreate", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[0])) {
-        _PyArg_BadArgument("FCICreate", "argument 1", "str", args[0]);
-        goto exit;
-    }
-    Py_ssize_t cabname_length;
-    cabname = PyUnicode_AsUTF8AndSize(args[0], &cabname_length);
-    if (cabname == NULL) {
-        goto exit;
-    }
-    if (strlen(cabname) != (size_t)cabname_length) {
-        PyErr_SetString(PyExc_ValueError, "embedded null character");
-        goto exit;
-    }
-    files = args[1];
-    return_value = _msi_FCICreate_impl(module, cabname, files);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_Database_Close__doc__,
-"Close($self, /)\n"
-"--\n"
-"\n"
-"Close the database object.");
-
-#define _MSI_DATABASE_CLOSE_METHODDEF    \
-    {"Close", (PyCFunction)_msi_Database_Close, METH_NOARGS, _msi_Database_Close__doc__},
-
-static PyObject *
-_msi_Database_Close_impl(msiobj *self);
-
-static PyObject *
-_msi_Database_Close(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_Database_Close_impl(self);
-}
-
-PyDoc_STRVAR(_msi_Record_GetFieldCount__doc__,
-"GetFieldCount($self, /)\n"
-"--\n"
-"\n"
-"Return the number of fields of the record.");
-
-#define _MSI_RECORD_GETFIELDCOUNT_METHODDEF    \
-    {"GetFieldCount", (PyCFunction)_msi_Record_GetFieldCount, METH_NOARGS, _msi_Record_GetFieldCount__doc__},
-
-static PyObject *
-_msi_Record_GetFieldCount_impl(msiobj *self);
-
-static PyObject *
-_msi_Record_GetFieldCount(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_Record_GetFieldCount_impl(self);
-}
-
-PyDoc_STRVAR(_msi_Record_GetInteger__doc__,
-"GetInteger($self, field, /)\n"
-"--\n"
-"\n"
-"Return the value of field as an integer where possible.");
-
-#define _MSI_RECORD_GETINTEGER_METHODDEF    \
-    {"GetInteger", (PyCFunction)_msi_Record_GetInteger, METH_O, _msi_Record_GetInteger__doc__},
-
-static PyObject *
-_msi_Record_GetInteger_impl(msiobj *self, unsigned int field);
-
-static PyObject *
-_msi_Record_GetInteger(msiobj *self, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    unsigned int field;
-
-    field = (unsigned int)PyLong_AsUnsignedLongMask(arg);
-    if (field == (unsigned int)-1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_Record_GetInteger_impl(self, field);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_Record_GetString__doc__,
-"GetString($self, field, /)\n"
-"--\n"
-"\n"
-"Return the value of field as a string where possible.");
-
-#define _MSI_RECORD_GETSTRING_METHODDEF    \
-    {"GetString", (PyCFunction)_msi_Record_GetString, METH_O, _msi_Record_GetString__doc__},
-
-static PyObject *
-_msi_Record_GetString_impl(msiobj *self, unsigned int field);
-
-static PyObject *
-_msi_Record_GetString(msiobj *self, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    unsigned int field;
-
-    field = (unsigned int)PyLong_AsUnsignedLongMask(arg);
-    if (field == (unsigned int)-1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_Record_GetString_impl(self, field);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_Record_ClearData__doc__,
-"ClearData($self, /)\n"
-"--\n"
-"\n"
-"Set all fields of the record to 0.");
-
-#define _MSI_RECORD_CLEARDATA_METHODDEF    \
-    {"ClearData", (PyCFunction)_msi_Record_ClearData, METH_NOARGS, _msi_Record_ClearData__doc__},
-
-static PyObject *
-_msi_Record_ClearData_impl(msiobj *self);
-
-static PyObject *
-_msi_Record_ClearData(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_Record_ClearData_impl(self);
-}
-
-PyDoc_STRVAR(_msi_Record_SetString__doc__,
-"SetString($self, field, value, /)\n"
-"--\n"
-"\n"
-"Set field to a string value.");
-
-#define _MSI_RECORD_SETSTRING_METHODDEF    \
-    {"SetString", _PyCFunction_CAST(_msi_Record_SetString), METH_FASTCALL, _msi_Record_SetString__doc__},
-
-static PyObject *
-_msi_Record_SetString_impl(msiobj *self, int field, const Py_UNICODE *value);
-
-static PyObject *
-_msi_Record_SetString(msiobj *self, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int field;
-    const Py_UNICODE *value = NULL;
-
-    if (!_PyArg_CheckPositional("SetString", nargs, 2, 2)) {
-        goto exit;
-    }
-    field = _PyLong_AsInt(args[0]);
-    if (field == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[1])) {
-        _PyArg_BadArgument("SetString", "argument 2", "str", args[1]);
-        goto exit;
-    }
-    value = PyUnicode_AsWideCharString(args[1], NULL);
-    if (value == NULL) {
-        goto exit;
-    }
-    return_value = _msi_Record_SetString_impl(self, field, value);
-
-exit:
-    /* Cleanup for value */
-    PyMem_Free((void *)value);
-
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_Record_SetStream__doc__,
-"SetStream($self, field, value, /)\n"
-"--\n"
-"\n"
-"Set field to the contents of the file named value.");
-
-#define _MSI_RECORD_SETSTREAM_METHODDEF    \
-    {"SetStream", _PyCFunction_CAST(_msi_Record_SetStream), METH_FASTCALL, _msi_Record_SetStream__doc__},
-
-static PyObject *
-_msi_Record_SetStream_impl(msiobj *self, int field, const Py_UNICODE *value);
-
-static PyObject *
-_msi_Record_SetStream(msiobj *self, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int field;
-    const Py_UNICODE *value = NULL;
-
-    if (!_PyArg_CheckPositional("SetStream", nargs, 2, 2)) {
-        goto exit;
-    }
-    field = _PyLong_AsInt(args[0]);
-    if (field == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[1])) {
-        _PyArg_BadArgument("SetStream", "argument 2", "str", args[1]);
-        goto exit;
-    }
-    value = PyUnicode_AsWideCharString(args[1], NULL);
-    if (value == NULL) {
-        goto exit;
-    }
-    return_value = _msi_Record_SetStream_impl(self, field, value);
-
-exit:
-    /* Cleanup for value */
-    PyMem_Free((void *)value);
-
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_Record_SetInteger__doc__,
-"SetInteger($self, field, value, /)\n"
-"--\n"
-"\n"
-"Set field to an integer value.");
-
-#define _MSI_RECORD_SETINTEGER_METHODDEF    \
-    {"SetInteger", _PyCFunction_CAST(_msi_Record_SetInteger), METH_FASTCALL, _msi_Record_SetInteger__doc__},
-
-static PyObject *
-_msi_Record_SetInteger_impl(msiobj *self, int field, int value);
-
-static PyObject *
-_msi_Record_SetInteger(msiobj *self, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int field;
-    int value;
-
-    if (!_PyArg_CheckPositional("SetInteger", nargs, 2, 2)) {
-        goto exit;
-    }
-    field = _PyLong_AsInt(args[0]);
-    if (field == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    value = _PyLong_AsInt(args[1]);
-    if (value == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_Record_SetInteger_impl(self, field, value);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_SummaryInformation_GetProperty__doc__,
-"GetProperty($self, field, /)\n"
-"--\n"
-"\n"
-"Return a property of the summary.\n"
-"\n"
-"  field\n"
-"    the name of the property, one of the PID_* constants");
-
-#define _MSI_SUMMARYINFORMATION_GETPROPERTY_METHODDEF    \
-    {"GetProperty", (PyCFunction)_msi_SummaryInformation_GetProperty, METH_O, _msi_SummaryInformation_GetProperty__doc__},
-
-static PyObject *
-_msi_SummaryInformation_GetProperty_impl(msiobj *self, int field);
-
-static PyObject *
-_msi_SummaryInformation_GetProperty(msiobj *self, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    int field;
-
-    field = _PyLong_AsInt(arg);
-    if (field == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_SummaryInformation_GetProperty_impl(self, field);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_SummaryInformation_GetPropertyCount__doc__,
-"GetPropertyCount($self, /)\n"
-"--\n"
-"\n"
-"Return the number of summary properties.");
-
-#define _MSI_SUMMARYINFORMATION_GETPROPERTYCOUNT_METHODDEF    \
-    {"GetPropertyCount", (PyCFunction)_msi_SummaryInformation_GetPropertyCount, METH_NOARGS, _msi_SummaryInformation_GetPropertyCount__doc__},
-
-static PyObject *
-_msi_SummaryInformation_GetPropertyCount_impl(msiobj *self);
-
-static PyObject *
-_msi_SummaryInformation_GetPropertyCount(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_SummaryInformation_GetPropertyCount_impl(self);
-}
-
-PyDoc_STRVAR(_msi_SummaryInformation_SetProperty__doc__,
-"SetProperty($self, field, value, /)\n"
-"--\n"
-"\n"
-"Set a property.\n"
-"\n"
-"  field\n"
-"    the name of the property, one of the PID_* constants\n"
-"  value\n"
-"    the new value of the property (integer or string)");
-
-#define _MSI_SUMMARYINFORMATION_SETPROPERTY_METHODDEF    \
-    {"SetProperty", _PyCFunction_CAST(_msi_SummaryInformation_SetProperty), METH_FASTCALL, _msi_SummaryInformation_SetProperty__doc__},
-
-static PyObject *
-_msi_SummaryInformation_SetProperty_impl(msiobj *self, int field,
-                                         PyObject *data);
-
-static PyObject *
-_msi_SummaryInformation_SetProperty(msiobj *self, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int field;
-    PyObject *data;
-
-    if (!_PyArg_CheckPositional("SetProperty", nargs, 2, 2)) {
-        goto exit;
-    }
-    field = _PyLong_AsInt(args[0]);
-    if (field == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    data = args[1];
-    return_value = _msi_SummaryInformation_SetProperty_impl(self, field, data);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_SummaryInformation_Persist__doc__,
-"Persist($self, /)\n"
-"--\n"
-"\n"
-"Write the modified properties to the summary information stream.");
-
-#define _MSI_SUMMARYINFORMATION_PERSIST_METHODDEF    \
-    {"Persist", (PyCFunction)_msi_SummaryInformation_Persist, METH_NOARGS, _msi_SummaryInformation_Persist__doc__},
-
-static PyObject *
-_msi_SummaryInformation_Persist_impl(msiobj *self);
-
-static PyObject *
-_msi_SummaryInformation_Persist(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_SummaryInformation_Persist_impl(self);
-}
-
-PyDoc_STRVAR(_msi_View_Execute__doc__,
-"Execute($self, params, /)\n"
-"--\n"
-"\n"
-"Execute the SQL query of the view.\n"
-"\n"
-"  params\n"
-"    a record describing actual values of the parameter tokens\n"
-"    in the query or None");
-
-#define _MSI_VIEW_EXECUTE_METHODDEF    \
-    {"Execute", (PyCFunction)_msi_View_Execute, METH_O, _msi_View_Execute__doc__},
-
-PyDoc_STRVAR(_msi_View_Fetch__doc__,
-"Fetch($self, /)\n"
-"--\n"
-"\n"
-"Return a result record of the query.");
-
-#define _MSI_VIEW_FETCH_METHODDEF    \
-    {"Fetch", (PyCFunction)_msi_View_Fetch, METH_NOARGS, _msi_View_Fetch__doc__},
-
-static PyObject *
-_msi_View_Fetch_impl(msiobj *self);
-
-static PyObject *
-_msi_View_Fetch(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_View_Fetch_impl(self);
-}
-
-PyDoc_STRVAR(_msi_View_GetColumnInfo__doc__,
-"GetColumnInfo($self, kind, /)\n"
-"--\n"
-"\n"
-"Return a record describing the columns of the view.\n"
-"\n"
-"  kind\n"
-"    MSICOLINFO_NAMES or MSICOLINFO_TYPES");
-
-#define _MSI_VIEW_GETCOLUMNINFO_METHODDEF    \
-    {"GetColumnInfo", (PyCFunction)_msi_View_GetColumnInfo, METH_O, _msi_View_GetColumnInfo__doc__},
-
-static PyObject *
-_msi_View_GetColumnInfo_impl(msiobj *self, int kind);
-
-static PyObject *
-_msi_View_GetColumnInfo(msiobj *self, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    int kind;
-
-    kind = _PyLong_AsInt(arg);
-    if (kind == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_View_GetColumnInfo_impl(self, kind);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_View_Modify__doc__,
-"Modify($self, kind, data, /)\n"
-"--\n"
-"\n"
-"Modify the view.\n"
-"\n"
-"  kind\n"
-"    one of the MSIMODIFY_* constants\n"
-"  data\n"
-"    a record describing the new data");
-
-#define _MSI_VIEW_MODIFY_METHODDEF    \
-    {"Modify", _PyCFunction_CAST(_msi_View_Modify), METH_FASTCALL, _msi_View_Modify__doc__},
-
-static PyObject *
-_msi_View_Modify_impl(msiobj *self, int kind, PyObject *data);
-
-static PyObject *
-_msi_View_Modify(msiobj *self, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    int kind;
-    PyObject *data;
-
-    if (!_PyArg_CheckPositional("Modify", nargs, 2, 2)) {
-        goto exit;
-    }
-    kind = _PyLong_AsInt(args[0]);
-    if (kind == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    data = args[1];
-    return_value = _msi_View_Modify_impl(self, kind, data);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_View_Close__doc__,
-"Close($self, /)\n"
-"--\n"
-"\n"
-"Close the view.");
-
-#define _MSI_VIEW_CLOSE_METHODDEF    \
-    {"Close", (PyCFunction)_msi_View_Close, METH_NOARGS, _msi_View_Close__doc__},
-
-static PyObject *
-_msi_View_Close_impl(msiobj *self);
-
-static PyObject *
-_msi_View_Close(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_View_Close_impl(self);
-}
-
-PyDoc_STRVAR(_msi_Database_OpenView__doc__,
-"OpenView($self, sql, /)\n"
-"--\n"
-"\n"
-"Return a view object.\n"
-"\n"
-"  sql\n"
-"    the SQL statement to execute");
-
-#define _MSI_DATABASE_OPENVIEW_METHODDEF    \
-    {"OpenView", (PyCFunction)_msi_Database_OpenView, METH_O, _msi_Database_OpenView__doc__},
-
-static PyObject *
-_msi_Database_OpenView_impl(msiobj *self, const Py_UNICODE *sql);
-
-static PyObject *
-_msi_Database_OpenView(msiobj *self, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    const Py_UNICODE *sql = NULL;
-
-    if (!PyUnicode_Check(arg)) {
-        _PyArg_BadArgument("OpenView", "argument", "str", arg);
-        goto exit;
-    }
-    sql = PyUnicode_AsWideCharString(arg, NULL);
-    if (sql == NULL) {
-        goto exit;
-    }
-    return_value = _msi_Database_OpenView_impl(self, sql);
-
-exit:
-    /* Cleanup for sql */
-    PyMem_Free((void *)sql);
-
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_Database_Commit__doc__,
-"Commit($self, /)\n"
-"--\n"
-"\n"
-"Commit the changes pending in the current transaction.");
-
-#define _MSI_DATABASE_COMMIT_METHODDEF    \
-    {"Commit", (PyCFunction)_msi_Database_Commit, METH_NOARGS, _msi_Database_Commit__doc__},
-
-static PyObject *
-_msi_Database_Commit_impl(msiobj *self);
-
-static PyObject *
-_msi_Database_Commit(msiobj *self, PyObject *Py_UNUSED(ignored))
-{
-    return _msi_Database_Commit_impl(self);
-}
-
-PyDoc_STRVAR(_msi_Database_GetSummaryInformation__doc__,
-"GetSummaryInformation($self, count, /)\n"
-"--\n"
-"\n"
-"Return a new summary information object.\n"
-"\n"
-"  count\n"
-"    the maximum number of updated values");
-
-#define _MSI_DATABASE_GETSUMMARYINFORMATION_METHODDEF    \
-    {"GetSummaryInformation", (PyCFunction)_msi_Database_GetSummaryInformation, METH_O, _msi_Database_GetSummaryInformation__doc__},
-
-static PyObject *
-_msi_Database_GetSummaryInformation_impl(msiobj *self, int count);
-
-static PyObject *
-_msi_Database_GetSummaryInformation(msiobj *self, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    int count;
-
-    count = _PyLong_AsInt(arg);
-    if (count == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_Database_GetSummaryInformation_impl(self, count);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_OpenDatabase__doc__,
-"OpenDatabase($module, path, persist, /)\n"
-"--\n"
-"\n"
-"Return a new database object.\n"
-"\n"
-"  path\n"
-"    the file name of the MSI file\n"
-"  persist\n"
-"    the persistence mode");
-
-#define _MSI_OPENDATABASE_METHODDEF    \
-    {"OpenDatabase", _PyCFunction_CAST(_msi_OpenDatabase), METH_FASTCALL, _msi_OpenDatabase__doc__},
-
-static PyObject *
-_msi_OpenDatabase_impl(PyObject *module, const Py_UNICODE *path, int persist);
-
-static PyObject *
-_msi_OpenDatabase(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    const Py_UNICODE *path = NULL;
-    int persist;
-
-    if (!_PyArg_CheckPositional("OpenDatabase", nargs, 2, 2)) {
-        goto exit;
-    }
-    if (!PyUnicode_Check(args[0])) {
-        _PyArg_BadArgument("OpenDatabase", "argument 1", "str", args[0]);
-        goto exit;
-    }
-    path = PyUnicode_AsWideCharString(args[0], NULL);
-    if (path == NULL) {
-        goto exit;
-    }
-    persist = _PyLong_AsInt(args[1]);
-    if (persist == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_OpenDatabase_impl(module, path, persist);
-
-exit:
-    /* Cleanup for path */
-    PyMem_Free((void *)path);
-
-    return return_value;
-}
-
-PyDoc_STRVAR(_msi_CreateRecord__doc__,
-"CreateRecord($module, count, /)\n"
-"--\n"
-"\n"
-"Return a new record object.\n"
-"\n"
-"  count\n"
-"    the number of fields of the record");
-
-#define _MSI_CREATERECORD_METHODDEF    \
-    {"CreateRecord", (PyCFunction)_msi_CreateRecord, METH_O, _msi_CreateRecord__doc__},
-
-static PyObject *
-_msi_CreateRecord_impl(PyObject *module, int count);
-
-static PyObject *
-_msi_CreateRecord(PyObject *module, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    int count;
-
-    count = _PyLong_AsInt(arg);
-    if (count == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = _msi_CreateRecord_impl(module, count);
-
-exit:
-    return return_value;
-}
-/*[clinic end generated code: output=7d083c61679eed83 input=a9049054013a1b77]*/
diff --git a/PC/clinic/_testconsole.c.h b/PC/clinic/_testconsole.c.h
index b2f3b4ce8b08a2..2c71c11c438b5b 100644
--- a/PC/clinic/_testconsole.c.h
+++ b/PC/clinic/_testconsole.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 #if defined(MS_WINDOWS)
 
@@ -140,4 +140,4 @@ _testconsole_read_output(PyObject *module, PyObject *const *args, Py_ssize_t nar
 #ifndef _TESTCONSOLE_READ_OUTPUT_METHODDEF
     #define _TESTCONSOLE_READ_OUTPUT_METHODDEF
 #endif /* !defined(_TESTCONSOLE_READ_OUTPUT_METHODDEF) */
-/*[clinic end generated code: output=208c72e2c873555b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=08a1c844b3657272 input=a9049054013a1b77]*/
diff --git a/PC/clinic/_wmimodule.cpp.h b/PC/clinic/_wmimodule.cpp.h
index e2b947f339da60..fccf3d795d5340 100644
--- a/PC/clinic/_wmimodule.cpp.h
+++ b/PC/clinic/_wmimodule.cpp.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_wmi_exec_query__doc__,
 "exec_query($module, /, query)\n"
@@ -63,13 +63,10 @@ _wmi_exec_query(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         _PyArg_BadArgument("exec_query", "argument 'query'", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     query = args[0];
     return_value = _wmi_exec_query_impl(module, query);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7fdf0c0579ddb566 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ba04920d127f3ceb input=a9049054013a1b77]*/
diff --git a/PC/clinic/msvcrtmodule.c.h b/PC/clinic/msvcrtmodule.c.h
index b708c6cdde757c..e3f7ea43f38211 100644
--- a/PC/clinic/msvcrtmodule.c.h
+++ b/PC/clinic/msvcrtmodule.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(msvcrt_heapmin__doc__,
 "heapmin($module, /)\n"
@@ -59,11 +55,11 @@ msvcrt_locking(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("locking", nargs, 3, 3)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[1]);
+    mode = PyLong_AsInt(args[1]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -105,11 +101,11 @@ msvcrt_setmode(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("setmode", nargs, 2, 2)) {
         goto exit;
     }
-    fd = _PyLong_AsInt(args[0]);
+    fd = PyLong_AsInt(args[0]);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -154,7 +150,7 @@ msvcrt_open_osfhandle(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!handle && PyErr_Occurred()) {
         goto exit;
     }
-    flags = _PyLong_AsInt(args[1]);
+    flags = PyLong_AsInt(args[1]);
     if (flags == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -189,7 +185,7 @@ msvcrt_get_osfhandle(PyObject *module, PyObject *arg)
     int fd;
     void *_return_value;
 
-    fd = _PyLong_AsInt(arg);
+    fd = PyLong_AsInt(arg);
     if (fd == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -207,7 +203,7 @@ PyDoc_STRVAR(msvcrt_kbhit__doc__,
 "kbhit($module, /)\n"
 "--\n"
 "\n"
-"Return true if a keypress is waiting to be read.");
+"Returns a nonzero value if a keypress is waiting to be read. Otherwise, return 0.");
 
 #define MSVCRT_KBHIT_METHODDEF    \
     {"kbhit", (PyCFunction)msvcrt_kbhit, METH_NOARGS, msvcrt_kbhit__doc__},
@@ -399,9 +395,6 @@ msvcrt_putwch(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("putwch", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("putwch", "argument", "a unicode character", arg);
         goto exit;
@@ -477,9 +470,6 @@ msvcrt_ungetwch(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("ungetwch", "argument", "a unicode character", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg)) {
-        goto exit;
-    }
     if (PyUnicode_GET_LENGTH(arg) != 1) {
         _PyArg_BadArgument("ungetwch", "argument", "a unicode character", arg);
         goto exit;
@@ -520,7 +510,7 @@ msvcrt_CrtSetReportFile(PyObject *module, PyObject *const *args, Py_ssize_t narg
     if (!_PyArg_CheckPositional("CrtSetReportFile", nargs, 2, 2)) {
         goto exit;
     }
-    type = _PyLong_AsInt(args[0]);
+    type = PyLong_AsInt(args[0]);
     if (type == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -567,11 +557,11 @@ msvcrt_CrtSetReportMode(PyObject *module, PyObject *const *args, Py_ssize_t narg
     if (!_PyArg_CheckPositional("CrtSetReportMode", nargs, 2, 2)) {
         goto exit;
     }
-    type = _PyLong_AsInt(args[0]);
+    type = PyLong_AsInt(args[0]);
     if (type == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    mode = _PyLong_AsInt(args[1]);
+    mode = PyLong_AsInt(args[1]);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -610,7 +600,7 @@ msvcrt_set_error_mode(PyObject *module, PyObject *arg)
     int mode;
     long _return_value;
 
-    mode = _PyLong_AsInt(arg);
+    mode = PyLong_AsInt(arg);
     if (mode == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -707,4 +697,4 @@ msvcrt_SetErrorMode(PyObject *module, PyObject *arg)
 #ifndef MSVCRT_GETERRORMODE_METHODDEF
     #define MSVCRT_GETERRORMODE_METHODDEF
 #endif /* !defined(MSVCRT_GETERRORMODE_METHODDEF) */
-/*[clinic end generated code: output=2db6197608a6aab3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=de9687b46212c2ed input=a9049054013a1b77]*/
diff --git a/PC/clinic/winreg.c.h b/PC/clinic/winreg.c.h
index 4109c85276f0a4..7e5545e113e718 100644
--- a/PC/clinic/winreg.c.h
+++ b/PC/clinic/winreg.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_long.h"          // _PyLong_UnsignedLong_Converter()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 #if (defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_SYSTEM) || defined(MS_WINDOWS_GAMES))
 
@@ -92,53 +93,26 @@ winreg_HKEYType___enter__(PyHKEYObject *self, PyObject *Py_UNUSED(ignored))
 #if (defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_SYSTEM) || defined(MS_WINDOWS_GAMES))
 
 PyDoc_STRVAR(winreg_HKEYType___exit____doc__,
-"__exit__($self, /, exc_type, exc_value, traceback)\n"
+"__exit__($self, exc_type, exc_value, traceback, /)\n"
 "--\n"
 "\n");
 
 #define WINREG_HKEYTYPE___EXIT___METHODDEF    \
-    {"__exit__", _PyCFunction_CAST(winreg_HKEYType___exit__), METH_FASTCALL|METH_KEYWORDS, winreg_HKEYType___exit____doc__},
+    {"__exit__", _PyCFunction_CAST(winreg_HKEYType___exit__), METH_FASTCALL, winreg_HKEYType___exit____doc__},
 
 static PyObject *
 winreg_HKEYType___exit___impl(PyHKEYObject *self, PyObject *exc_type,
                               PyObject *exc_value, PyObject *traceback);
 
 static PyObject *
-winreg_HKEYType___exit__(PyHKEYObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+winreg_HKEYType___exit__(PyHKEYObject *self, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 3
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(exc_type), &_Py_ID(exc_value), &_Py_ID(traceback), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"exc_type", "exc_value", "traceback", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "__exit__",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *exc_type;
     PyObject *exc_value;
     PyObject *traceback;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 3, 3, 0, argsbuf);
-    if (!args) {
+    if (!_PyArg_CheckPositional("__exit__", nargs, 3, 3)) {
         goto exit;
     }
     exc_type = args[0];
@@ -192,14 +166,14 @@ PyDoc_STRVAR(winreg_ConnectRegistry__doc__,
     {"ConnectRegistry", _PyCFunction_CAST(winreg_ConnectRegistry), METH_FASTCALL, winreg_ConnectRegistry__doc__},
 
 static HKEY
-winreg_ConnectRegistry_impl(PyObject *module,
-                            const Py_UNICODE *computer_name, HKEY key);
+winreg_ConnectRegistry_impl(PyObject *module, const wchar_t *computer_name,
+                            HKEY key);
 
 static PyObject *
 winreg_ConnectRegistry(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    const Py_UNICODE *computer_name = NULL;
+    const wchar_t *computer_name = NULL;
     HKEY key;
     HKEY _return_value;
 
@@ -262,14 +236,14 @@ PyDoc_STRVAR(winreg_CreateKey__doc__,
     {"CreateKey", _PyCFunction_CAST(winreg_CreateKey), METH_FASTCALL, winreg_CreateKey__doc__},
 
 static HKEY
-winreg_CreateKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key);
+winreg_CreateKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key);
 
 static PyObject *
 winreg_CreateKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
     HKEY _return_value;
 
     if (!_PyArg_CheckPositional("CreateKey", nargs, 2, 2)) {
@@ -337,9 +311,8 @@ PyDoc_STRVAR(winreg_CreateKeyEx__doc__,
     {"CreateKeyEx", _PyCFunction_CAST(winreg_CreateKeyEx), METH_FASTCALL|METH_KEYWORDS, winreg_CreateKeyEx__doc__},
 
 static HKEY
-winreg_CreateKeyEx_impl(PyObject *module, HKEY key,
-                        const Py_UNICODE *sub_key, int reserved,
-                        REGSAM access);
+winreg_CreateKeyEx_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
+                        int reserved, REGSAM access);
 
 static PyObject *
 winreg_CreateKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -373,7 +346,7 @@ winreg_CreateKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
     int reserved = 0;
     REGSAM access = KEY_WRITE;
     HKEY _return_value;
@@ -402,7 +375,7 @@ winreg_CreateKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         goto skip_optional_pos;
     }
     if (args[2]) {
-        reserved = _PyLong_AsInt(args[2]);
+        reserved = PyLong_AsInt(args[2]);
         if (reserved == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -410,7 +383,7 @@ winreg_CreateKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
             goto skip_optional_pos;
         }
     }
-    access = _PyLong_AsInt(args[3]);
+    access = PyLong_AsInt(args[3]);
     if (access == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -454,14 +427,14 @@ PyDoc_STRVAR(winreg_DeleteKey__doc__,
     {"DeleteKey", _PyCFunction_CAST(winreg_DeleteKey), METH_FASTCALL, winreg_DeleteKey__doc__},
 
 static PyObject *
-winreg_DeleteKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key);
+winreg_DeleteKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key);
 
 static PyObject *
 winreg_DeleteKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
 
     if (!_PyArg_CheckPositional("DeleteKey", nargs, 2, 2)) {
         goto exit;
@@ -522,9 +495,8 @@ PyDoc_STRVAR(winreg_DeleteKeyEx__doc__,
     {"DeleteKeyEx", _PyCFunction_CAST(winreg_DeleteKeyEx), METH_FASTCALL|METH_KEYWORDS, winreg_DeleteKeyEx__doc__},
 
 static PyObject *
-winreg_DeleteKeyEx_impl(PyObject *module, HKEY key,
-                        const Py_UNICODE *sub_key, REGSAM access,
-                        int reserved);
+winreg_DeleteKeyEx_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
+                        REGSAM access, int reserved);
 
 static PyObject *
 winreg_DeleteKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -558,7 +530,7 @@ winreg_DeleteKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
     REGSAM access = KEY_WOW64_64KEY;
     int reserved = 0;
 
@@ -581,7 +553,7 @@ winreg_DeleteKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         goto skip_optional_pos;
     }
     if (args[2]) {
-        access = _PyLong_AsInt(args[2]);
+        access = PyLong_AsInt(args[2]);
         if (access == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -589,7 +561,7 @@ winreg_DeleteKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
             goto skip_optional_pos;
         }
     }
-    reserved = _PyLong_AsInt(args[3]);
+    reserved = PyLong_AsInt(args[3]);
     if (reserved == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -622,14 +594,14 @@ PyDoc_STRVAR(winreg_DeleteValue__doc__,
     {"DeleteValue", _PyCFunction_CAST(winreg_DeleteValue), METH_FASTCALL, winreg_DeleteValue__doc__},
 
 static PyObject *
-winreg_DeleteValue_impl(PyObject *module, HKEY key, const Py_UNICODE *value);
+winreg_DeleteValue_impl(PyObject *module, HKEY key, const wchar_t *value);
 
 static PyObject *
 winreg_DeleteValue(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *value = NULL;
+    const wchar_t *value = NULL;
 
     if (!_PyArg_CheckPositional("DeleteValue", nargs, 2, 2)) {
         goto exit;
@@ -697,7 +669,7 @@ winreg_EnumKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!clinic_HKEY_converter(_PyModule_GetState(module), args[0], &key)) {
         goto exit;
     }
-    index = _PyLong_AsInt(args[1]);
+    index = PyLong_AsInt(args[1]);
     if (index == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -754,7 +726,7 @@ winreg_EnumValue(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!clinic_HKEY_converter(_PyModule_GetState(module), args[0], &key)) {
         goto exit;
     }
-    index = _PyLong_AsInt(args[1]);
+    index = PyLong_AsInt(args[1]);
     if (index == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -778,14 +750,13 @@ PyDoc_STRVAR(winreg_ExpandEnvironmentStrings__doc__,
     {"ExpandEnvironmentStrings", (PyCFunction)winreg_ExpandEnvironmentStrings, METH_O, winreg_ExpandEnvironmentStrings__doc__},
 
 static PyObject *
-winreg_ExpandEnvironmentStrings_impl(PyObject *module,
-                                     const Py_UNICODE *string);
+winreg_ExpandEnvironmentStrings_impl(PyObject *module, const wchar_t *string);
 
 static PyObject *
 winreg_ExpandEnvironmentStrings(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
-    const Py_UNICODE *string = NULL;
+    const wchar_t *string = NULL;
 
     if (!PyUnicode_Check(arg)) {
         _PyArg_BadArgument("ExpandEnvironmentStrings", "argument", "str", arg);
@@ -884,16 +855,16 @@ PyDoc_STRVAR(winreg_LoadKey__doc__,
     {"LoadKey", _PyCFunction_CAST(winreg_LoadKey), METH_FASTCALL, winreg_LoadKey__doc__},
 
 static PyObject *
-winreg_LoadKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
-                    const Py_UNICODE *file_name);
+winreg_LoadKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
+                    const wchar_t *file_name);
 
 static PyObject *
 winreg_LoadKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
-    const Py_UNICODE *file_name = NULL;
+    const wchar_t *sub_key = NULL;
+    const wchar_t *file_name = NULL;
 
     if (!_PyArg_CheckPositional("LoadKey", nargs, 3, 3)) {
         goto exit;
@@ -955,7 +926,7 @@ PyDoc_STRVAR(winreg_OpenKey__doc__,
     {"OpenKey", _PyCFunction_CAST(winreg_OpenKey), METH_FASTCALL|METH_KEYWORDS, winreg_OpenKey__doc__},
 
 static HKEY
-winreg_OpenKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
+winreg_OpenKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
                     int reserved, REGSAM access);
 
 static PyObject *
@@ -990,7 +961,7 @@ winreg_OpenKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
     int reserved = 0;
     REGSAM access = KEY_READ;
     HKEY _return_value;
@@ -1019,7 +990,7 @@ winreg_OpenKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         goto skip_optional_pos;
     }
     if (args[2]) {
-        reserved = _PyLong_AsInt(args[2]);
+        reserved = PyLong_AsInt(args[2]);
         if (reserved == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -1027,7 +998,7 @@ winreg_OpenKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
             goto skip_optional_pos;
         }
     }
-    access = _PyLong_AsInt(args[3]);
+    access = PyLong_AsInt(args[3]);
     if (access == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1072,7 +1043,7 @@ PyDoc_STRVAR(winreg_OpenKeyEx__doc__,
     {"OpenKeyEx", _PyCFunction_CAST(winreg_OpenKeyEx), METH_FASTCALL|METH_KEYWORDS, winreg_OpenKeyEx__doc__},
 
 static HKEY
-winreg_OpenKeyEx_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
+winreg_OpenKeyEx_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
                       int reserved, REGSAM access);
 
 static PyObject *
@@ -1107,7 +1078,7 @@ winreg_OpenKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
     int reserved = 0;
     REGSAM access = KEY_READ;
     HKEY _return_value;
@@ -1136,7 +1107,7 @@ winreg_OpenKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         goto skip_optional_pos;
     }
     if (args[2]) {
-        reserved = _PyLong_AsInt(args[2]);
+        reserved = PyLong_AsInt(args[2]);
         if (reserved == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -1144,7 +1115,7 @@ winreg_OpenKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
             goto skip_optional_pos;
         }
     }
-    access = _PyLong_AsInt(args[3]);
+    access = PyLong_AsInt(args[3]);
     if (access == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1230,14 +1201,14 @@ PyDoc_STRVAR(winreg_QueryValue__doc__,
     {"QueryValue", _PyCFunction_CAST(winreg_QueryValue), METH_FASTCALL, winreg_QueryValue__doc__},
 
 static PyObject *
-winreg_QueryValue_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key);
+winreg_QueryValue_impl(PyObject *module, HKEY key, const wchar_t *sub_key);
 
 static PyObject *
 winreg_QueryValue(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
 
     if (!_PyArg_CheckPositional("QueryValue", nargs, 2, 2)) {
         goto exit;
@@ -1291,14 +1262,14 @@ PyDoc_STRVAR(winreg_QueryValueEx__doc__,
     {"QueryValueEx", _PyCFunction_CAST(winreg_QueryValueEx), METH_FASTCALL, winreg_QueryValueEx__doc__},
 
 static PyObject *
-winreg_QueryValueEx_impl(PyObject *module, HKEY key, const Py_UNICODE *name);
+winreg_QueryValueEx_impl(PyObject *module, HKEY key, const wchar_t *name);
 
 static PyObject *
 winreg_QueryValueEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *name = NULL;
+    const wchar_t *name = NULL;
 
     if (!_PyArg_CheckPositional("QueryValueEx", nargs, 2, 2)) {
         goto exit;
@@ -1357,14 +1328,14 @@ PyDoc_STRVAR(winreg_SaveKey__doc__,
     {"SaveKey", _PyCFunction_CAST(winreg_SaveKey), METH_FASTCALL, winreg_SaveKey__doc__},
 
 static PyObject *
-winreg_SaveKey_impl(PyObject *module, HKEY key, const Py_UNICODE *file_name);
+winreg_SaveKey_impl(PyObject *module, HKEY key, const wchar_t *file_name);
 
 static PyObject *
 winreg_SaveKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *file_name = NULL;
+    const wchar_t *file_name = NULL;
 
     if (!_PyArg_CheckPositional("SaveKey", nargs, 2, 2)) {
         goto exit;
@@ -1423,7 +1394,7 @@ PyDoc_STRVAR(winreg_SetValue__doc__,
     {"SetValue", _PyCFunction_CAST(winreg_SetValue), METH_FASTCALL, winreg_SetValue__doc__},
 
 static PyObject *
-winreg_SetValue_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
+winreg_SetValue_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
                      DWORD type, PyObject *value_obj);
 
 static PyObject *
@@ -1431,7 +1402,7 @@ winreg_SetValue(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *sub_key = NULL;
+    const wchar_t *sub_key = NULL;
     DWORD type;
     PyObject *value_obj;
 
@@ -1461,9 +1432,6 @@ winreg_SetValue(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("SetValue", "argument 4", "str", args[3]);
         goto exit;
     }
-    if (PyUnicode_READY(args[3]) == -1) {
-        goto exit;
-    }
     value_obj = args[3];
     return_value = winreg_SetValue_impl(module, key, sub_key, type, value_obj);
 
@@ -1525,16 +1493,15 @@ PyDoc_STRVAR(winreg_SetValueEx__doc__,
     {"SetValueEx", _PyCFunction_CAST(winreg_SetValueEx), METH_FASTCALL, winreg_SetValueEx__doc__},
 
 static PyObject *
-winreg_SetValueEx_impl(PyObject *module, HKEY key,
-                       const Py_UNICODE *value_name, PyObject *reserved,
-                       DWORD type, PyObject *value);
+winreg_SetValueEx_impl(PyObject *module, HKEY key, const wchar_t *value_name,
+                       PyObject *reserved, DWORD type, PyObject *value);
 
 static PyObject *
 winreg_SetValueEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     HKEY key;
-    const Py_UNICODE *value_name = NULL;
+    const wchar_t *value_name = NULL;
     PyObject *reserved;
     DWORD type;
     PyObject *value;
@@ -1795,4 +1762,4 @@ winreg_QueryReflectionKey(PyObject *module, PyObject *arg)
 #ifndef WINREG_QUERYREFLECTIONKEY_METHODDEF
     #define WINREG_QUERYREFLECTIONKEY_METHODDEF
 #endif /* !defined(WINREG_QUERYREFLECTIONKEY_METHODDEF) */
-/*[clinic end generated code: output=15dc2e6c4d4e2ad5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1ee4098b2f143b6a input=a9049054013a1b77]*/
diff --git a/PC/clinic/winsound.c.h b/PC/clinic/winsound.c.h
index 241d547c267a4c..6cc989565b638e 100644
--- a/PC/clinic/winsound.c.h
+++ b/PC/clinic/winsound.c.h
@@ -2,12 +2,6 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
-
 PyDoc_STRVAR(winsound_PlaySound__doc__,
 "PlaySound($module, /, sound, flags)\n"
 "--\n"
@@ -20,53 +14,22 @@ PyDoc_STRVAR(winsound_PlaySound__doc__,
 "    Flag values, ored together.  See module documentation.");
 
 #define WINSOUND_PLAYSOUND_METHODDEF    \
-    {"PlaySound", _PyCFunction_CAST(winsound_PlaySound), METH_FASTCALL|METH_KEYWORDS, winsound_PlaySound__doc__},
+    {"PlaySound", (PyCFunction)(void(*)(void))winsound_PlaySound, METH_VARARGS|METH_KEYWORDS, winsound_PlaySound__doc__},
 
 static PyObject *
 winsound_PlaySound_impl(PyObject *module, PyObject *sound, int flags);
 
 static PyObject *
-winsound_PlaySound(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+winsound_PlaySound(PyObject *module, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(sound), &_Py_ID(flags), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"sound", "flags", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "PlaySound",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
+    static char *_keywords[] = {"sound", "flags", NULL};
     PyObject *sound;
     int flags;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    sound = args[0];
-    flags = _PyLong_AsInt(args[1]);
-    if (flags == -1 && PyErr_Occurred()) {
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Oi:PlaySound", _keywords,
+        &sound, &flags))
         goto exit;
-    }
     return_value = winsound_PlaySound_impl(module, sound, flags);
 
 exit:
@@ -86,56 +49,22 @@ PyDoc_STRVAR(winsound_Beep__doc__,
 "    How long the sound should play, in milliseconds.");
 
 #define WINSOUND_BEEP_METHODDEF    \
-    {"Beep", _PyCFunction_CAST(winsound_Beep), METH_FASTCALL|METH_KEYWORDS, winsound_Beep__doc__},
+    {"Beep", (PyCFunction)(void(*)(void))winsound_Beep, METH_VARARGS|METH_KEYWORDS, winsound_Beep__doc__},
 
 static PyObject *
 winsound_Beep_impl(PyObject *module, int frequency, int duration);
 
 static PyObject *
-winsound_Beep(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+winsound_Beep(PyObject *module, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 2
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(frequency), &_Py_ID(duration), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"frequency", "duration", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "Beep",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[2];
+    static char *_keywords[] = {"frequency", "duration", NULL};
     int frequency;
     int duration;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
-    if (!args) {
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ii:Beep", _keywords,
+        &frequency, &duration))
         goto exit;
-    }
-    frequency = _PyLong_AsInt(args[0]);
-    if (frequency == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    duration = _PyLong_AsInt(args[1]);
-    if (duration == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
     return_value = winsound_Beep_impl(module, frequency, duration);
 
 exit:
@@ -151,59 +80,24 @@ PyDoc_STRVAR(winsound_MessageBeep__doc__,
 "x defaults to MB_OK.");
 
 #define WINSOUND_MESSAGEBEEP_METHODDEF    \
-    {"MessageBeep", _PyCFunction_CAST(winsound_MessageBeep), METH_FASTCALL|METH_KEYWORDS, winsound_MessageBeep__doc__},
+    {"MessageBeep", (PyCFunction)(void(*)(void))winsound_MessageBeep, METH_VARARGS|METH_KEYWORDS, winsound_MessageBeep__doc__},
 
 static PyObject *
 winsound_MessageBeep_impl(PyObject *module, int type);
 
 static PyObject *
-winsound_MessageBeep(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+winsound_MessageBeep(PyObject *module, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
-    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-
-    #define NUM_KEYWORDS 1
-    static struct {
-        PyGC_Head _this_is_not_used;
-        PyObject_VAR_HEAD
-        PyObject *ob_item[NUM_KEYWORDS];
-    } _kwtuple = {
-        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(type), },
-    };
-    #undef NUM_KEYWORDS
-    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
-
-    #else  // !Py_BUILD_CORE
-    #  define KWTUPLE NULL
-    #endif  // !Py_BUILD_CORE
-
-    static const char * const _keywords[] = {"type", NULL};
-    static _PyArg_Parser _parser = {
-        .keywords = _keywords,
-        .fname = "MessageBeep",
-        .kwtuple = KWTUPLE,
-    };
-    #undef KWTUPLE
-    PyObject *argsbuf[1];
-    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    static char *_keywords[] = {"type", NULL};
     int type = MB_OK;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
-    if (!args) {
-        goto exit;
-    }
-    if (!noptargs) {
-        goto skip_optional_pos;
-    }
-    type = _PyLong_AsInt(args[0]);
-    if (type == -1 && PyErr_Occurred()) {
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i:MessageBeep", _keywords,
+        &type))
         goto exit;
-    }
-skip_optional_pos:
     return_value = winsound_MessageBeep_impl(module, type);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f70b7730127208d8 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=18a3771b34cdf97d input=a9049054013a1b77]*/
diff --git a/PC/config.c b/PC/config.c
index 9d0fe6f87df69a..da2bde640961e0 100644
--- a/PC/config.c
+++ b/PC/config.c
@@ -7,7 +7,6 @@
 
 extern PyObject* PyInit__abc(void);
 extern PyObject* PyInit_array(void);
-extern PyObject* PyInit_audioop(void);
 extern PyObject* PyInit_binascii(void);
 extern PyObject* PyInit_cmath(void);
 extern PyObject* PyInit_errno(void);
@@ -23,6 +22,7 @@ extern PyObject* PyInit__sha1(void);
 extern PyObject* PyInit__sha2(void);
 extern PyObject* PyInit__sha3(void);
 extern PyObject* PyInit__statistics(void);
+extern PyObject* PyInit__sysconfig(void);
 extern PyObject* PyInit__typing(void);
 extern PyObject* PyInit__blake2(void);
 extern PyObject* PyInit_time(void);
@@ -89,7 +89,6 @@ struct _inittab _PyImport_Inittab[] = {
     {"_abc", PyInit__abc},
     {"array", PyInit_array},
     {"_ast", PyInit__ast},
-    {"audioop", PyInit_audioop},
     {"binascii", PyInit_binascii},
     {"cmath", PyInit_cmath},
     {"errno", PyInit_errno},
@@ -104,6 +103,7 @@ struct _inittab _PyImport_Inittab[] = {
     {"_sha2", PyInit__sha2},
     {"_sha3", PyInit__sha3},
     {"_blake2", PyInit__blake2},
+    {"_sysconfig", PyInit__sysconfig},
     {"time", PyInit_time},
     {"_thread", PyInit__thread},
     {"_tokenize", PyInit__tokenize},
diff --git a/PC/launcher.c b/PC/launcher.c
index dc265533740b67..8e60ab9303cb95 100644
--- a/PC/launcher.c
+++ b/PC/launcher.c
@@ -1270,6 +1270,7 @@ static PYC_MAGIC magic_values[] = {
     /* Allow 50 magic numbers per version from here on */
     { 3450, 3499, L"3.11" },
     { 3500, 3549, L"3.12" },
+    { 3550, 3599, L"3.13" },
     { 0 }
 };
 
diff --git a/PC/launcher2.c b/PC/launcher2.c
index bb500d4b6bfb07..2a8f8a101fc8a6 100644
--- a/PC/launcher2.c
+++ b/PC/launcher2.c
@@ -195,6 +195,13 @@ join(wchar_t *buffer, size_t bufferLength, const wchar_t *fragment)
 }
 
 
+bool
+split_parent(wchar_t *buffer, size_t bufferLength)
+{
+    return SUCCEEDED(PathCchRemoveFileSpec(buffer, bufferLength));
+}
+
+
 int
 _compare(const wchar_t *x, int xLen, const wchar_t *y, int yLen)
 {
@@ -414,8 +421,8 @@ typedef struct {
     // if true, treats 'tag' as a non-PEP 514 filter
     bool oldStyleTag;
     // if true, ignores 'tag' when a high priority environment is found
-    // gh-92817: This is currently set when a tag is read from configuration or
-    // the environment, rather than the command line or a shebang line, and the
+    // gh-92817: This is currently set when a tag is read from configuration,
+    // the environment, or a shebang, rather than the command line, and the
     // only currently possible high priority environment is an active virtual
     // environment
     bool lowPriorityTag;
@@ -431,7 +438,7 @@ typedef struct {
     bool list;
     // if true, only list detected runtimes with paths without launching
     bool listPaths;
-    // if true, display help message before contiuning
+    // if true, display help message before continuing
     bool help;
     // if set, limits search to registry keys with the specified Company
     // This is intended for debugging and testing only
@@ -794,6 +801,8 @@ searchPath(SearchInfo *search, const wchar_t *shebang, int shebangLength)
         }
     }
 
+    debug(L"# Search PATH for %s\n", filename);
+
     wchar_t pathVariable[MAXLEN];
     int n = GetEnvironmentVariableW(L"PATH", pathVariable, MAXLEN);
     if (!n) {
@@ -1031,8 +1040,11 @@ checkShebang(SearchInfo *search)
     debug(L"Shebang: %s\n", shebang);
 
     // Handle shebangs that we should search PATH for
+    int executablePathWasSetByUsrBinEnv = 0;
     exitCode = searchPath(search, shebang, shebangLength);
-    if (exitCode != RC_NO_SHEBANG) {
+    if (exitCode == 0) {
+        executablePathWasSetByUsrBinEnv = 1;
+    } else if (exitCode != RC_NO_SHEBANG) {
         return exitCode;
     }
 
@@ -1067,7 +1079,7 @@ checkShebang(SearchInfo *search)
             search->tagLength = commandLength;
             // If we had 'python3.12.exe' then we want to strip the suffix
             // off of the tag
-            if (search->tagLength > 4) {
+            if (search->tagLength >= 4) {
                 const wchar_t *suffix = &search->tag[search->tagLength - 4];
                 if (0 == _comparePath(suffix, 4, L".exe", -1)) {
                     search->tagLength -= 4;
@@ -1075,13 +1087,14 @@ checkShebang(SearchInfo *search)
             }
             // If we had 'python3_d' then we want to strip the '_d' (any
             // '.exe' is already gone)
-            if (search->tagLength > 2) {
+            if (search->tagLength >= 2) {
                 const wchar_t *suffix = &search->tag[search->tagLength - 2];
                 if (0 == _comparePath(suffix, 2, L"_d", -1)) {
                     search->tagLength -= 2;
                 }
             }
             search->oldStyleTag = true;
+            search->lowPriorityTag = true;
             search->executableArgs = &command[commandLength];
             search->executableArgsLength = shebangLength - commandLength;
             if (search->tag && search->tagLength) {
@@ -1095,6 +1108,11 @@ checkShebang(SearchInfo *search)
         }
     }
 
+    // Didn't match a template, but we found it on PATH
+    if (executablePathWasSetByUsrBinEnv) {
+        return 0;
+    }
+
     // Unrecognised executables are first tried as command aliases
     commandLength = 0;
     while (commandLength < shebangLength && !isspace(shebang[commandLength])) {
@@ -1765,7 +1783,15 @@ virtualenvSearch(const SearchInfo *search, EnvironmentInfo **result)
         return 0;
     }
 
-    if (INVALID_FILE_ATTRIBUTES == GetFileAttributesW(buffer)) {
+    DWORD attr = GetFileAttributesW(buffer);
+    if (INVALID_FILE_ATTRIBUTES == attr && search->lowPriorityTag) {
+        if (!split_parent(buffer, MAXLEN) || !join(buffer, MAXLEN, L"python.exe")) {
+            return 0;
+        }
+        attr = GetFileAttributesW(buffer);
+    }
+
+    if (INVALID_FILE_ATTRIBUTES == attr) {
         debug(L"Python executable %s missing from virtual env\n", buffer);
         return 0;
     }
diff --git a/PC/layout/main.py b/PC/layout/main.py
index c9246007d47d18..cb2e4878da26b1 100644
--- a/PC/layout/main.py
+++ b/PC/layout/main.py
@@ -49,8 +49,6 @@
 
 REQUIRED_DLLS = FileStemSet("libcrypto*", "libssl*", "libffi*")
 
-LIB2TO3_GRAMMAR_FILES = FileNameSet("Grammar.txt", "PatternGrammar.txt")
-
 PY_FILES = FileSuffixSet(".py")
 PYC_FILES = FileSuffixSet(".pyc")
 CAT_FILES = FileSuffixSet(".cat")
@@ -298,27 +296,6 @@ def _write_to_zip(zf, dest, src, ns, checked=True):
                 log_exception("Failed to delete {}", pyc)
         return
 
-    if src in LIB2TO3_GRAMMAR_FILES:
-        from lib2to3.pgen2.driver import load_grammar
-
-        tmp = ns.temp / src.name
-        try:
-            shutil.copy(src, tmp)
-            load_grammar(str(tmp))
-            for f in ns.temp.glob(src.stem + "*.pickle"):
-                zf.write(str(f), str(dest.parent / f.name))
-                try:
-                    f.unlink()
-                except:
-                    log_exception("Failed to delete {}", f)
-        except:
-            log_exception("Failed to compile {}", src)
-        finally:
-            try:
-                tmp.unlink()
-            except:
-                log_exception("Failed to delete {}", tmp)
-
     zf.write(str(src), str(dest))
 
 
diff --git a/PC/layout/support/options.py b/PC/layout/support/options.py
index 26d13f5377ad59..60256fb32fe329 100644
--- a/PC/layout/support/options.py
+++ b/PC/layout/support/options.py
@@ -41,7 +41,6 @@ def public(f):
         "options": [
             "stable",
             "pip",
-            "pip-user",
             "tcltk",
             "idle",
             "venv",
diff --git a/PC/layout/support/props.py b/PC/layout/support/props.py
index c7a7a0ce777a6e..f751a4b3f1e437 100644
--- a/PC/layout/support/props.py
+++ b/PC/layout/support/props.py
@@ -36,7 +36,6 @@
     <PythonVersion>{PYTHON_VERSION}</PythonVersion>
 
     <IncludePythonExe Condition="$(IncludePythonExe) == ''">true</IncludePythonExe>
-    <IncludeLib2To3 Condition="$(IncludeLib2To3) == ''">false</IncludeLib2To3>
     <IncludeVEnv Condition="$(IncludeVEnv) == ''">false</IncludeVEnv>
 
     <GetPythonRuntimeFilesDependsOn>{PYTHON_TARGET};$(GetPythonRuntimeFilesDependsOn)</GetPythonRuntimeFilesDependsOn>
@@ -67,7 +66,6 @@
         <Link>DLLs\%(Filename)%(Extension)</Link>
       </_PythonRuntimeDlls>
       <_PythonRuntimeLib Include="$(PythonHome)\Lib\**\*" Exclude="$(PythonHome)\Lib\**\*.pyc;$(PythonHome)\Lib\site-packages\**\*" />
-      <_PythonRuntimeLib Remove="$(PythonHome)\Lib\lib2to3\**\*" Condition="$(IncludeLib2To3) != 'true'" />
       <_PythonRuntimeLib Remove="$(PythonHome)\Lib\ensurepip\**\*" Condition="$(IncludeVEnv) != 'true'" />
       <_PythonRuntimeLib Remove="$(PythonHome)\Lib\venv\**\*" Condition="$(IncludeVEnv) != 'true'" />
       <_PythonRuntimeLib>
diff --git a/PC/layout/support/python.props b/PC/layout/support/python.props
index e46891aafcb9fc..c48ecb2f9c1b57 100644
--- a/PC/layout/support/python.props
+++ b/PC/layout/support/python.props
@@ -8,7 +8,6 @@
     <PythonVersion>$$PYTHON_VERSION$$</PythonVersion>
 
     <IncludePythonExe Condition="$(IncludePythonExe) == ''">true</IncludePythonExe>
-    <IncludeLib2To3 Condition="$(IncludeLib2To3) == ''">false</IncludeLib2To3>
     <IncludeVEnv Condition="$(IncludeVEnv) == ''">false</IncludeVEnv>
 
     <GetPythonRuntimeFilesDependsOn>$$PYTHON_TARGET$$;$(GetPythonRuntimeFilesDependsOn)</GetPythonRuntimeFilesDependsOn>
@@ -40,7 +39,6 @@
         <Link>DLLs\%(Filename)%(Extension)</Link>
       </_PythonRuntimeDlls>
       <_PythonRuntimeLib Include="$(PythonHome)\Lib\**\*" Exclude="$(PythonHome)\Lib\**\*.pyc;$(PythonHome)\Lib\site-packages\**\*" />
-      <_PythonRuntimeLib Remove="$(PythonHome)\Lib\lib2to3\**\*" Condition="$(IncludeLib2To3) != 'true'" />
       <_PythonRuntimeLib Remove="$(PythonHome)\Lib\ensurepip\**\*" Condition="$(IncludeVEnv) != 'true'" />
       <_PythonRuntimeLib Remove="$(PythonHome)\Lib\venv\**\*" Condition="$(IncludeVEnv) != 'true'" />
       <_PythonRuntimeLib>
diff --git a/PC/msvcrtmodule.c b/PC/msvcrtmodule.c
index 53ef26b732f615..5ff703217b421f 100644
--- a/PC/msvcrtmodule.c
+++ b/PC/msvcrtmodule.c
@@ -38,13 +38,14 @@ class HANDLE_converter(CConverter):
     type = 'void *'
     format_unit = '"_Py_PARSE_UINTPTR"'
 
-    def parse_arg(self, argname, displayname):
-        return """
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        return self.format_code("""
             {paramname} = PyLong_AsVoidPtr({argname});
             if (!{paramname} && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.parser_name)
+            """,
+            argname=argname)
 
 class HANDLE_return_converter(CReturnConverter):
     type = 'void *'
@@ -74,7 +75,7 @@ class wchar_t_return_converter(CReturnConverter):
         data.return_conversion.append(
             'return_value = PyUnicode_FromOrdinal(_return_value);\n')
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=1e8e9fa3538ec08f]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=ff031be44ab3250d]*/
 
 /*[clinic input]
 module msvcrt
@@ -219,12 +220,12 @@ msvcrt_get_osfhandle_impl(PyObject *module, int fd)
 /*[clinic input]
 msvcrt.kbhit -> long
 
-Return true if a keypress is waiting to be read.
+Returns a nonzero value if a keypress is waiting to be read. Otherwise, return 0.
 [clinic start generated code]*/
 
 static long
 msvcrt_kbhit_impl(PyObject *module)
-/*[clinic end generated code: output=940dfce6587c1890 input=e70d678a5c2f6acc]*/
+/*[clinic end generated code: output=940dfce6587c1890 input=d0f4cb3289ff51e2]*/
 {
     return _kbhit();
 }
@@ -565,15 +566,9 @@ static struct PyMethodDef msvcrt_functions[] = {
 };
 
 static int
-insertptr(PyObject *mod, char *name, void *value)
+insertptr(PyObject *mod, const char *name, void *value)
 {
-    PyObject *v = PyLong_FromVoidPtr(value);
-    if (v == NULL) {
-        return -1;
-    }
-    int rc = PyModule_AddObjectRef(mod, name, v);
-    Py_DECREF(v);
-    return rc;
+    return PyModule_Add(mod, name, PyLong_FromVoidPtr(value));
 }
 
 #define INSERTINT(MOD, NAME, VAL) do {                  \
@@ -620,6 +615,10 @@ exec_module(PyObject* m)
     INSERTPTR(m, "CRTDBG_FILE_STDERR", _CRTDBG_FILE_STDERR);
     INSERTPTR(m, "CRTDBG_FILE_STDOUT", _CRTDBG_FILE_STDOUT);
     INSERTPTR(m, "CRTDBG_REPORT_FILE", _CRTDBG_REPORT_FILE);
+    INSERTINT(m, "OUT_TO_DEFAULT", _OUT_TO_DEFAULT);
+    INSERTINT(m, "OUT_TO_STDERR", _OUT_TO_STDERR);
+    INSERTINT(m, "OUT_TO_MSGBOX", _OUT_TO_MSGBOX);
+    INSERTINT(m, "REPORT_ERRMODE", _REPORT_ERRMODE);
 #endif
 
 #undef INSERTINT
@@ -646,12 +645,7 @@ exec_module(PyObject* m)
                                              _VC_CRT_MINOR_VERSION,
                                              _VC_CRT_BUILD_VERSION,
                                              _VC_CRT_RBUILD_VERSION);
-    if (version == NULL) {
-        return -1;
-    }
-    int st = PyModule_AddObjectRef(m, "CRT_ASSEMBLY_VERSION", version);
-    Py_DECREF(version);
-    if (st < 0) {
+    if (PyModule_Add(m, "CRT_ASSEMBLY_VERSION", version) < 0) {
         return -1;
     }
 #endif
diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index 3415efe2dea117..e6b368caffe280 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -308,11 +308,11 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
                         file in their Makefile (other compilers are
                         generally taken care of by distutils.) */
 #                       if defined(_DEBUG)
-#                               pragma comment(lib,"python312_d.lib")
+#                               pragma comment(lib,"python313_d.lib")
 #                       elif defined(Py_LIMITED_API)
 #                               pragma comment(lib,"python3.lib")
 #                       else
-#                               pragma comment(lib,"python312.lib")
+#                               pragma comment(lib,"python313.lib")
 #                       endif /* _DEBUG */
 #               endif /* _MSC_VER */
 #       endif /* Py_BUILD_CORE */
@@ -511,6 +511,9 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Use Python's own small-block memory-allocator. */
 #define WITH_PYMALLOC 1
 
+/* Define if you want to compile in mimalloc memory allocator. */
+#define WITH_MIMALLOC 1
+
 /* Define if you want to compile in object freelists optimization */
 #define WITH_FREELISTS 1
 
@@ -675,9 +678,6 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Define if you have the mpc library (-lmpc).  */
 /* #undef HAVE_LIBMPC */
 
-/* Define if you have the nsl library (-lnsl).  */
-#define HAVE_LIBNSL 1
-
 /* Define if you have the seq library (-lseq).  */
 /* #undef HAVE_LIBSEQ */
 
diff --git a/PC/python3dll.c b/PC/python3dll.c
index 7e848abccfd1fa..07aa84c91f9fc7 100755
--- a/PC/python3dll.c
+++ b/PC/python3dll.c
@@ -1,4 +1,3 @@
-
 /* Re-export stable Python ABI */
 
 /* Generated by Tools/build/stable_abi.py */
@@ -20,6 +19,7 @@ EXPORT_FUNC(_Py_Dealloc)
 EXPORT_FUNC(_Py_DecRef)
 EXPORT_FUNC(_Py_IncRef)
 EXPORT_FUNC(_Py_NegativeRefcount)
+EXPORT_FUNC(_Py_SetRefcnt)
 EXPORT_FUNC(_Py_VaBuildValue_SizeT)
 EXPORT_FUNC(_PyArg_Parse_SizeT)
 EXPORT_FUNC(_PyArg_ParseTuple_SizeT)
@@ -70,6 +70,7 @@ EXPORT_FUNC(Py_Initialize)
 EXPORT_FUNC(Py_InitializeEx)
 EXPORT_FUNC(Py_Is)
 EXPORT_FUNC(Py_IsFalse)
+EXPORT_FUNC(Py_IsFinalizing)
 EXPORT_FUNC(Py_IsInitialized)
 EXPORT_FUNC(Py_IsNone)
 EXPORT_FUNC(Py_IsTrue)
@@ -173,7 +174,9 @@ EXPORT_FUNC(PyDict_Copy)
 EXPORT_FUNC(PyDict_DelItem)
 EXPORT_FUNC(PyDict_DelItemString)
 EXPORT_FUNC(PyDict_GetItem)
+EXPORT_FUNC(PyDict_GetItemRef)
 EXPORT_FUNC(PyDict_GetItemString)
+EXPORT_FUNC(PyDict_GetItemStringRef)
 EXPORT_FUNC(PyDict_GetItemWithError)
 EXPORT_FUNC(PyDict_Items)
 EXPORT_FUNC(PyDict_Keys)
@@ -289,6 +292,7 @@ EXPORT_FUNC(PyGILState_GetThisThreadState)
 EXPORT_FUNC(PyGILState_Release)
 EXPORT_FUNC(PyImport_AddModule)
 EXPORT_FUNC(PyImport_AddModuleObject)
+EXPORT_FUNC(PyImport_AddModuleRef)
 EXPORT_FUNC(PyImport_AppendInittab)
 EXPORT_FUNC(PyImport_ExecCodeModule)
 EXPORT_FUNC(PyImport_ExecCodeModuleEx)
@@ -329,6 +333,7 @@ EXPORT_FUNC(PyList_SetSlice)
 EXPORT_FUNC(PyList_Size)
 EXPORT_FUNC(PyList_Sort)
 EXPORT_FUNC(PyLong_AsDouble)
+EXPORT_FUNC(PyLong_AsInt)
 EXPORT_FUNC(PyLong_AsLong)
 EXPORT_FUNC(PyLong_AsLongAndOverflow)
 EXPORT_FUNC(PyLong_AsLongLong)
@@ -352,8 +357,12 @@ EXPORT_FUNC(PyLong_FromVoidPtr)
 EXPORT_FUNC(PyLong_GetInfo)
 EXPORT_FUNC(PyMapping_Check)
 EXPORT_FUNC(PyMapping_GetItemString)
+EXPORT_FUNC(PyMapping_GetOptionalItem)
+EXPORT_FUNC(PyMapping_GetOptionalItemString)
 EXPORT_FUNC(PyMapping_HasKey)
 EXPORT_FUNC(PyMapping_HasKeyString)
+EXPORT_FUNC(PyMapping_HasKeyStringWithError)
+EXPORT_FUNC(PyMapping_HasKeyWithError)
 EXPORT_FUNC(PyMapping_Items)
 EXPORT_FUNC(PyMapping_Keys)
 EXPORT_FUNC(PyMapping_Length)
@@ -365,6 +374,10 @@ EXPORT_FUNC(PyMarshal_WriteObjectToString)
 EXPORT_FUNC(PyMem_Calloc)
 EXPORT_FUNC(PyMem_Free)
 EXPORT_FUNC(PyMem_Malloc)
+EXPORT_FUNC(PyMem_RawCalloc)
+EXPORT_FUNC(PyMem_RawFree)
+EXPORT_FUNC(PyMem_RawMalloc)
+EXPORT_FUNC(PyMem_RawRealloc)
 EXPORT_FUNC(PyMem_Realloc)
 EXPORT_FUNC(PyMember_GetOne)
 EXPORT_FUNC(PyMember_SetOne)
@@ -372,6 +385,7 @@ EXPORT_FUNC(PyMemoryView_FromBuffer)
 EXPORT_FUNC(PyMemoryView_FromMemory)
 EXPORT_FUNC(PyMemoryView_FromObject)
 EXPORT_FUNC(PyMemoryView_GetContiguous)
+EXPORT_FUNC(PyModule_Add)
 EXPORT_FUNC(PyModule_AddFunctions)
 EXPORT_FUNC(PyModule_AddIntConstant)
 EXPORT_FUNC(PyModule_AddObject)
@@ -447,6 +461,8 @@ EXPORT_FUNC(PyObject_CheckBuffer)
 EXPORT_FUNC(PyObject_CheckReadBuffer)
 EXPORT_FUNC(PyObject_ClearWeakRefs)
 EXPORT_FUNC(PyObject_CopyData)
+EXPORT_FUNC(PyObject_DelAttr)
+EXPORT_FUNC(PyObject_DelAttrString)
 EXPORT_FUNC(PyObject_DelItem)
 EXPORT_FUNC(PyObject_DelItemString)
 EXPORT_FUNC(PyObject_Dir)
@@ -467,9 +483,13 @@ EXPORT_FUNC(PyObject_GetAttrString)
 EXPORT_FUNC(PyObject_GetBuffer)
 EXPORT_FUNC(PyObject_GetItem)
 EXPORT_FUNC(PyObject_GetIter)
+EXPORT_FUNC(PyObject_GetOptionalAttr)
+EXPORT_FUNC(PyObject_GetOptionalAttrString)
 EXPORT_FUNC(PyObject_GetTypeData)
 EXPORT_FUNC(PyObject_HasAttr)
 EXPORT_FUNC(PyObject_HasAttrString)
+EXPORT_FUNC(PyObject_HasAttrStringWithError)
+EXPORT_FUNC(PyObject_HasAttrWithError)
 EXPORT_FUNC(PyObject_Hash)
 EXPORT_FUNC(PyObject_HashNotImplemented)
 EXPORT_FUNC(PyObject_Init)
@@ -549,6 +569,8 @@ EXPORT_FUNC(PyStructSequence_SetItem)
 EXPORT_FUNC(PySys_AddWarnOption)
 EXPORT_FUNC(PySys_AddWarnOptionUnicode)
 EXPORT_FUNC(PySys_AddXOption)
+EXPORT_FUNC(PySys_Audit)
+EXPORT_FUNC(PySys_AuditTuple)
 EXPORT_FUNC(PySys_FormatStderr)
 EXPORT_FUNC(PySys_FormatStdout)
 EXPORT_FUNC(PySys_GetObject)
@@ -674,6 +696,8 @@ EXPORT_FUNC(PyUnicode_DecodeUTF8Stateful)
 EXPORT_FUNC(PyUnicode_EncodeCodePage)
 EXPORT_FUNC(PyUnicode_EncodeFSDefault)
 EXPORT_FUNC(PyUnicode_EncodeLocale)
+EXPORT_FUNC(PyUnicode_EqualToUTF8)
+EXPORT_FUNC(PyUnicode_EqualToUTF8AndSize)
 EXPORT_FUNC(PyUnicode_Find)
 EXPORT_FUNC(PyUnicode_FindChar)
 EXPORT_FUNC(PyUnicode_Format)
@@ -735,6 +759,7 @@ EXPORT_FUNC(PyUnicodeTranslateError_SetStart)
 EXPORT_FUNC(PyVectorcall_Call)
 EXPORT_FUNC(PyVectorcall_NARGS)
 EXPORT_FUNC(PyWeakref_GetObject)
+EXPORT_FUNC(PyWeakref_GetRef)
 EXPORT_FUNC(PyWeakref_NewProxy)
 EXPORT_FUNC(PyWeakref_NewRef)
 EXPORT_FUNC(PyWrapper_New)
diff --git a/PC/winreg.c b/PC/winreg.c
index e2d5322f458c2a..77b80217ac0ab1 100644
--- a/PC/winreg.c
+++ b/PC/winreg.c
@@ -12,11 +12,10 @@
 
 */
 
-#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pycore_object.h"        // _PyObject_Init()
 #include "pycore_moduleobject.h"
-#include "structmember.h"         // PyMemberDef
+
 #include <windows.h>
 
 #if defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_SYSTEM) || defined(MS_WINDOWS_GAMES)
@@ -221,14 +220,17 @@ class DWORD_converter(unsigned_long_converter):
 class HKEY_converter(CConverter):
     type = 'HKEY'
     converter = 'clinic_HKEY_converter'
-
-    def parse_arg(self, argname, displayname):
-        return """
-        if (!{converter}(_PyModule_GetState(module), {argname}, &{paramname})) {{{{
-            goto exit;
-        }}}}
-        """.format(argname=argname, paramname=self.parser_name,
-                   converter=self.converter)
+    broken_limited_capi = True
+
+    def parse_arg(self, argname, displayname, *, limited_capi):
+        assert not limited_capi
+        return self.format_code("""
+            if (!{converter}(_PyModule_GetState(module), {argname}, &{paramname})) {{{{
+                goto exit;
+            }}}}
+            """,
+            argname=argname,
+            converter=self.converter)
 
 class HKEY_return_converter(CReturnConverter):
     type = 'HKEY'
@@ -250,7 +252,7 @@ class self_return_converter(CReturnConverter):
         data.return_conversion.append(
             'return_value = (PyObject *)_return_value;\n')
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=17e645060c7b8ae1]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=4979f33998ffb6f8]*/
 
 #include "clinic/winreg.c.h"
 
@@ -324,12 +326,14 @@ winreg.HKEYType.__exit__
     exc_type: object
     exc_value: object
     traceback: object
+    /
+
 [clinic start generated code]*/
 
 static PyObject *
 winreg_HKEYType___exit___impl(PyHKEYObject *self, PyObject *exc_type,
                               PyObject *exc_value, PyObject *traceback)
-/*[clinic end generated code: output=923ebe7389e6a263 input=fb32489ee92403c7]*/
+/*[clinic end generated code: output=923ebe7389e6a263 input=1eac83cd06962689]*/
 {
     winreg_state *st = _PyType_GetModuleState(Py_TYPE(self));
     assert(st != NULL);
@@ -353,7 +357,7 @@ static struct PyMethodDef PyHKEY_methods[] = {
 
 #define OFF(e) offsetof(PyHKEYObject, e)
 static PyMemberDef PyHKEY_memberlist[] = {
-    {"handle",      T_INT,      OFF(hkey), READONLY},
+    {"handle",      Py_T_INT,      OFF(hkey), Py_READONLY},
     {NULL}    /* Sentinel */
 };
 
@@ -868,9 +872,9 @@ If the function fails, an OSError exception is raised.
 [clinic start generated code]*/
 
 static HKEY
-winreg_ConnectRegistry_impl(PyObject *module,
-                            const Py_UNICODE *computer_name, HKEY key)
-/*[clinic end generated code: output=cd4f70fb9ec901fb input=5f98a891a347e68e]*/
+winreg_ConnectRegistry_impl(PyObject *module, const wchar_t *computer_name,
+                            HKEY key)
+/*[clinic end generated code: output=c77d12428f4bfe29 input=5f98a891a347e68e]*/
 {
     HKEY retKey;
     long rc;
@@ -911,8 +915,8 @@ If the function fails, an OSError exception is raised.
 [clinic start generated code]*/
 
 static HKEY
-winreg_CreateKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key)
-/*[clinic end generated code: output=2af13910d56eae26 input=3cdd1622488acea2]*/
+winreg_CreateKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key)
+/*[clinic end generated code: output=58d3eb2ed428a84d input=3cdd1622488acea2]*/
 {
     HKEY retKey;
     long rc;
@@ -959,10 +963,9 @@ If the function fails, an OSError exception is raised.
 [clinic start generated code]*/
 
 static HKEY
-winreg_CreateKeyEx_impl(PyObject *module, HKEY key,
-                        const Py_UNICODE *sub_key, int reserved,
-                        REGSAM access)
-/*[clinic end generated code: output=643a70ad6a361a97 input=42c2b03f98406b66]*/
+winreg_CreateKeyEx_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
+                        int reserved, REGSAM access)
+/*[clinic end generated code: output=51b53e38d5e00d4b input=42c2b03f98406b66]*/
 {
     HKEY retKey;
     long rc;
@@ -1004,8 +1007,8 @@ is removed.  If the function fails, an OSError exception is raised.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_DeleteKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key)
-/*[clinic end generated code: output=d2652a84f70e0862 input=b31d225b935e4211]*/
+winreg_DeleteKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key)
+/*[clinic end generated code: output=2e9f7c09eb7701b8 input=b31d225b935e4211]*/
 {
     long rc;
     if (PySys_Audit("winreg.DeleteKey", "nun",
@@ -1049,10 +1052,9 @@ On unsupported Windows versions, NotImplementedError is raised.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_DeleteKeyEx_impl(PyObject *module, HKEY key,
-                        const Py_UNICODE *sub_key, REGSAM access,
-                        int reserved)
-/*[clinic end generated code: output=52a1c8b374ebc003 input=a3186db079b3bf85]*/
+winreg_DeleteKeyEx_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
+                        REGSAM access, int reserved)
+/*[clinic end generated code: output=3bf4865c783fe7b2 input=a3186db079b3bf85]*/
 {
     long rc;
     if (PySys_Audit("winreg.DeleteKey", "nun",
@@ -1081,8 +1083,8 @@ Removes a named value from a registry key.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_DeleteValue_impl(PyObject *module, HKEY key, const Py_UNICODE *value)
-/*[clinic end generated code: output=56fa9d21f3a54371 input=a78d3407a4197b21]*/
+winreg_DeleteValue_impl(PyObject *module, HKEY key, const wchar_t *value)
+/*[clinic end generated code: output=ed24b297aab137a5 input=a78d3407a4197b21]*/
 {
     long rc;
     if (PySys_Audit("winreg.DeleteValue", "nu",
@@ -1261,9 +1263,8 @@ Expand environment vars.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_ExpandEnvironmentStrings_impl(PyObject *module,
-                                     const Py_UNICODE *string)
-/*[clinic end generated code: output=8fa4e959747a7312 input=b2a9714d2b751aa6]*/
+winreg_ExpandEnvironmentStrings_impl(PyObject *module, const wchar_t *string)
+/*[clinic end generated code: output=53f120bbe788fa6f input=b2a9714d2b751aa6]*/
 {
     wchar_t *retValue = NULL;
     DWORD retValueSize;
@@ -1365,9 +1366,9 @@ tree.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_LoadKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
-                    const Py_UNICODE *file_name)
-/*[clinic end generated code: output=65f89f2548cb27c7 input=e3b5b45ade311582]*/
+winreg_LoadKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
+                    const wchar_t *file_name)
+/*[clinic end generated code: output=5561b0216e5ab263 input=e3b5b45ade311582]*/
 {
     long rc;
 
@@ -1405,9 +1406,9 @@ If the function fails, an OSError exception is raised.
 [clinic start generated code]*/
 
 static HKEY
-winreg_OpenKey_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
+winreg_OpenKey_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
                     int reserved, REGSAM access)
-/*[clinic end generated code: output=8849bff2c30104ad input=098505ac36a9ae28]*/
+/*[clinic end generated code: output=5efbad23b3ffe2e7 input=098505ac36a9ae28]*/
 {
     HKEY retKey;
     long rc;
@@ -1441,9 +1442,9 @@ If the function fails, an OSError exception is raised.
 [clinic start generated code]*/
 
 static HKEY
-winreg_OpenKeyEx_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
+winreg_OpenKeyEx_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
                       int reserved, REGSAM access)
-/*[clinic end generated code: output=81bc2bd684bc77ae input=c6c4972af8622959]*/
+/*[clinic end generated code: output=435e675800fa78c2 input=c6c4972af8622959]*/
 {
     return winreg_OpenKey_impl(module, key, sub_key, reserved, access);
 }
@@ -1517,8 +1518,8 @@ completeness.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_QueryValue_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key)
-/*[clinic end generated code: output=c655810ae50c63a9 input=41cafbbf423b21d6]*/
+winreg_QueryValue_impl(PyObject *module, HKEY key, const wchar_t *sub_key)
+/*[clinic end generated code: output=b665ce9ae391fda9 input=41cafbbf423b21d6]*/
 {
     LONG rc;
     HKEY childKey = key;
@@ -1612,8 +1613,8 @@ The return value is a tuple of the value and the type_id.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_QueryValueEx_impl(PyObject *module, HKEY key, const Py_UNICODE *name)
-/*[clinic end generated code: output=f1b85b1c3d887ec7 input=cf366cada4836891]*/
+winreg_QueryValueEx_impl(PyObject *module, HKEY key, const wchar_t *name)
+/*[clinic end generated code: output=2cdecaa44c8c333e input=cf366cada4836891]*/
 {
     long rc;
     BYTE *retBuf, *tmp;
@@ -1691,8 +1692,8 @@ to the API.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_SaveKey_impl(PyObject *module, HKEY key, const Py_UNICODE *file_name)
-/*[clinic end generated code: output=ca94b835c88f112b input=da735241f91ac7a2]*/
+winreg_SaveKey_impl(PyObject *module, HKEY key, const wchar_t *file_name)
+/*[clinic end generated code: output=249b1b58b9598eef input=da735241f91ac7a2]*/
 {
     LPSECURITY_ATTRIBUTES pSA = NULL;
 
@@ -1743,9 +1744,9 @@ KEY_SET_VALUE access.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_SetValue_impl(PyObject *module, HKEY key, const Py_UNICODE *sub_key,
+winreg_SetValue_impl(PyObject *module, HKEY key, const wchar_t *sub_key,
                      DWORD type, PyObject *value_obj)
-/*[clinic end generated code: output=d4773dc9c372311a input=bf088494ae2d24fd]*/
+/*[clinic end generated code: output=de590747df47d2c7 input=bf088494ae2d24fd]*/
 {
     LONG rc;
     HKEY childKey = key;
@@ -1858,10 +1859,9 @@ the configuration registry to help the registry perform efficiently.
 [clinic start generated code]*/
 
 static PyObject *
-winreg_SetValueEx_impl(PyObject *module, HKEY key,
-                       const Py_UNICODE *value_name, PyObject *reserved,
-                       DWORD type, PyObject *value)
-/*[clinic end generated code: output=811b769a66ae11b7 input=900a9e3990bfb196]*/
+winreg_SetValueEx_impl(PyObject *module, HKEY key, const wchar_t *value_name,
+                       PyObject *reserved, DWORD type, PyObject *value)
+/*[clinic end generated code: output=295db04deb456d9e input=900a9e3990bfb196]*/
 {
     LONG rc;
     BYTE *data = NULL;
@@ -2084,15 +2084,9 @@ static struct PyMethodDef winreg_methods[] = {
 } while (0)
 
 static int
-inskey(PyObject *mod, char *name, HKEY key)
+inskey(PyObject *mod, const char *name, HKEY key)
 {
-    PyObject *v = PyLong_FromVoidPtr(key);
-    if (v == NULL) {
-        return -1;
-    }
-    int rc = PyModule_AddObjectRef(mod, name, v);
-    Py_DECREF(v);
-    return rc;
+    return PyModule_Add(mod, name, PyLong_FromVoidPtr(key));
 }
 
 #define ADD_KEY(VAL) do {           \
diff --git a/PC/winsound.c b/PC/winsound.c
index 68a917810f884d..b0e416cfec4699 100644
--- a/PC/winsound.c
+++ b/PC/winsound.c
@@ -35,6 +35,11 @@
    winsound.PlaySound(None, 0)
 */
 
+#ifndef Py_GIL_DISABLED
+// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
+#define Py_LIMITED_API 0x030c0000
+#endif
+
 #include <Python.h>
 #include <windows.h>
 #include <mmsystem.h>
@@ -95,9 +100,13 @@ winsound_PlaySound_impl(PyObject *module, PyObject *sound, int flags)
         }
         wsound = (wchar_t *)view.buf;
     } else if (PyBytes_Check(sound)) {
-        PyErr_Format(PyExc_TypeError,
-                     "'sound' must be str, os.PathLike, or None, not '%s'",
-                     Py_TYPE(sound)->tp_name);
+        PyObject *type_name = PyType_GetQualName(Py_TYPE(sound));
+        if (type_name != NULL) {
+            PyErr_Format(PyExc_TypeError,
+                         "'sound' must be str, os.PathLike, or None, not %S",
+                         type_name);
+            Py_DECREF(type_name);
+        }
         return NULL;
     } else {
         PyObject *obj = PyOS_FSPath(sound);
diff --git a/PCbuild/_freeze_module.vcxproj b/PCbuild/_freeze_module.vcxproj
index d897925f58c0de..a1c37e183f21c7 100644
--- a/PCbuild/_freeze_module.vcxproj
+++ b/PCbuild/_freeze_module.vcxproj
@@ -159,6 +159,7 @@
     <ClCompile Include="..\Objects\structseq.c" />
     <ClCompile Include="..\Objects\tupleobject.c" />
     <ClCompile Include="..\Objects\typeobject.c" />
+    <ClCompile Include="..\Objects\typevarobject.c" />
     <ClCompile Include="..\Objects\unicodectype.c" />
     <ClCompile Include="..\Objects\unicodeobject.c" />
     <ClCompile Include="..\Objects\unionobject.c" />
@@ -171,7 +172,14 @@
     <ClCompile Include="..\Parser\action_helpers.c" />
     <ClCompile Include="..\Parser\string_parser.c" />
     <ClCompile Include="..\Parser\token.c" />
-    <ClCompile Include="..\Parser\tokenizer.c" />
+    <ClCompile Include="..\Parser\lexer\buffer.c" />
+    <ClCompile Include="..\Parser\lexer\state.c" />
+    <ClCompile Include="..\Parser\lexer\lexer.c" />
+    <ClCompile Include="..\Parser\tokenizer\string_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\file_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\helpers.c" />
     <ClCompile Include="..\PC\invalid_parameter_handler.c" />
     <ClCompile Include="..\PC\msvcrtmodule.c" />
     <ClCompile Include="..\PC\winreg.c" />
@@ -187,6 +195,8 @@
     <ClCompile Include="..\Python\codecs.c" />
     <ClCompile Include="..\Python\compile.c" />
     <ClCompile Include="..\Python\context.c" />
+    <ClCompile Include="..\Python\critical_section.c" />
+    <ClCompile Include="..\Python\crossinterp.c" />
     <ClCompile Include="..\Python\dtoa.c" />
     <ClCompile Include="..\Python\dynamic_annotations.c" />
     <ClCompile Include="..\Python\dynload_win.c" />
@@ -211,10 +221,14 @@
     <ClCompile Include="..\Python\intrinsics.c" />
     <ClCompile Include="..\Python\instrumentation.c" />
     <ClCompile Include="..\Python\legacy_tracing.c" />
+    <ClCompile Include="..\Python\lock.c" />
     <ClCompile Include="..\Python\marshal.c" />
     <ClCompile Include="..\Python\modsupport.c" />
     <ClCompile Include="..\Python\mysnprintf.c" />
     <ClCompile Include="..\Python\mystrtoul.c" />
+    <ClCompile Include="..\Python\optimizer.c" />
+    <ClCompile Include="..\Python\optimizer_analysis.c" />
+    <ClCompile Include="..\Python\parking_lot.c" />
     <ClCompile Include="..\Python\pathconfig.c" />
     <ClCompile Include="..\Python\perf_trampoline.c" />
     <ClCompile Include="..\Python\preconfig.c" />
@@ -241,6 +255,7 @@
     </ClCompile>
     <ClCompile Include="..\Python\thread.c" />
     <ClCompile Include="..\Python\traceback.c" />
+    <ClCompile Include="..\Python\tracemalloc.c" />
   </ItemGroup>
   <ItemGroup>
     <!-- BEGIN frozen modules -->
@@ -369,6 +384,33 @@
       <OutFile>$(PySourcePath)Python\frozen_modules\getpath.h</OutFile>
     </GetPath>
   </ItemGroup>
+  <ItemGroup>
+    <!-- BEGIN freeze mappings -->
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\importlib._bootstrap.h" FrozenId="importlib._bootstrap" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\importlib._bootstrap_external.h" FrozenId="importlib._bootstrap_external" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\zipimport.h" FrozenId="zipimport" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\abc.h" FrozenId="abc" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\codecs.h" FrozenId="codecs" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\io.h" FrozenId="io" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\_collections_abc.h" FrozenId="_collections_abc" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\_sitebuiltins.h" FrozenId="_sitebuiltins" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\genericpath.h" FrozenId="genericpath" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\ntpath.h" FrozenId="ntpath" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\posixpath.h" FrozenId="posixpath" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\os.h" FrozenId="os" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\site.h" FrozenId="site" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\stat.h" FrozenId="stat" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\importlib.util.h" FrozenId="importlib.util" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\importlib.machinery.h" FrozenId="importlib.machinery" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\runpy.h" FrozenId="runpy" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\__hello__.h" FrozenId="__hello__" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\__phello__.h" FrozenId="__phello__" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\__phello__.ham.h" FrozenId="__phello__.ham" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\__phello__.ham.eggs.h" FrozenId="__phello__.ham.eggs" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\__phello__.spam.h" FrozenId="__phello__.spam" />
+    <FrozenModule Include="$(PySourcePath)\Python\frozen_modules\frozen_only.h" FrozenId="frozen_only" />
+    <!-- END freeze mappings -->
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
@@ -400,32 +442,19 @@
           AfterTargets="_RebuildFrozen"
           DependsOnTargets="FindPythonForBuild"
           Condition="$(Configuration) != 'PGUpdate'">
+    <PropertyGroup>
+      <FreezeMappingsFile>
+        <!-- BEGIN freeze mapping file -->
+$(IntDir)\deepfreeze_mappings.txt
+        <!-- END freeze mapping file -->
+      </FreezeMappingsFile>
+    </PropertyGroup>
+    <WriteLinesToFile
+      File="$(FreezeMappingsFile)"
+      Overwrite="true"
+      Lines="@(FrozenModule->'%(FullPath):%(FrozenId)')" />
     <!-- BEGIN deepfreeze rule -->
-	<Exec Command='$(PythonForBuild) "$(PySourcePath)Tools\build\deepfreeze.py" ^
-		 "$(PySourcePath)Python\frozen_modules\importlib._bootstrap.h:importlib._bootstrap" ^
-		 "$(PySourcePath)Python\frozen_modules\importlib._bootstrap_external.h:importlib._bootstrap_external" ^
-		 "$(PySourcePath)Python\frozen_modules\zipimport.h:zipimport" ^
-		 "$(PySourcePath)Python\frozen_modules\abc.h:abc" ^
-		 "$(PySourcePath)Python\frozen_modules\codecs.h:codecs" ^
-		 "$(PySourcePath)Python\frozen_modules\io.h:io" ^
-		 "$(PySourcePath)Python\frozen_modules\_collections_abc.h:_collections_abc" ^
-		 "$(PySourcePath)Python\frozen_modules\_sitebuiltins.h:_sitebuiltins" ^
-		 "$(PySourcePath)Python\frozen_modules\genericpath.h:genericpath" ^
-		 "$(PySourcePath)Python\frozen_modules\ntpath.h:ntpath" ^
-		 "$(PySourcePath)Python\frozen_modules\posixpath.h:posixpath" ^
-		 "$(PySourcePath)Python\frozen_modules\os.h:os" ^
-		 "$(PySourcePath)Python\frozen_modules\site.h:site" ^
-		 "$(PySourcePath)Python\frozen_modules\stat.h:stat" ^
-		 "$(PySourcePath)Python\frozen_modules\importlib.util.h:importlib.util" ^
-		 "$(PySourcePath)Python\frozen_modules\importlib.machinery.h:importlib.machinery" ^
-		 "$(PySourcePath)Python\frozen_modules\runpy.h:runpy" ^
-		 "$(PySourcePath)Python\frozen_modules\__hello__.h:__hello__" ^
-		 "$(PySourcePath)Python\frozen_modules\__phello__.h:__phello__" ^
-		 "$(PySourcePath)Python\frozen_modules\__phello__.ham.h:__phello__.ham" ^
-		 "$(PySourcePath)Python\frozen_modules\__phello__.ham.eggs.h:__phello__.ham.eggs" ^
-		 "$(PySourcePath)Python\frozen_modules\__phello__.spam.h:__phello__.spam" ^
-		 "$(PySourcePath)Python\frozen_modules\frozen_only.h:frozen_only" ^
-		 "-o" "$(PySourcePath)Python\deepfreeze\deepfreeze.c"'/>
+    <Exec Command='$(PythonForBuild) "$(PySourcePath)Tools\build\deepfreeze.py" -f "$(IntDir)\deepfreeze_mappings.txt" -o "$(PySourcePath)Python\deepfreeze\deepfreeze.c"' />
     <!-- END deepfreeze rule -->
   </Target>
   <Target Name="_CleanFrozen" BeforeTargets="CoreClean" Condition="$(Configuration) != 'PGUpdate'">
diff --git a/PCbuild/_freeze_module.vcxproj.filters b/PCbuild/_freeze_module.vcxproj.filters
index 176935a63c4852..1c5a6d623f4dad 100644
--- a/PCbuild/_freeze_module.vcxproj.filters
+++ b/PCbuild/_freeze_module.vcxproj.filters
@@ -103,6 +103,12 @@
     <ClCompile Include="..\Python\context.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\critical_section.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Python\crossinterp.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Objects\descrobject.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -220,6 +226,9 @@
     <ClCompile Include="..\Python\legacy_tracing.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\lock.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Objects\interpreteridobject.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -277,9 +286,18 @@
     <ClCompile Include="..\Objects\odictobject.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\optimizer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Python\optimizer_analysis.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Parser\parser.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\parking_lot.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Python\pathconfig.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -388,12 +406,36 @@
     <ClCompile Include="..\Parser\token.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\Parser\tokenizer.c">
+    <ClCompile Include="..\Parser\lexer\lexer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\lexer\buffer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\lexer\state.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\string_tokenizer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\file_tokenizer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\helpers.c">
       <Filter>Source Files</Filter>
     </ClCompile>
     <ClCompile Include="..\Python\traceback.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\tracemalloc.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Objects\tupleobject.c">
       <Filter>Source Files</Filter>
     </ClCompile>
diff --git a/PCbuild/_msi.vcxproj b/PCbuild/_msi.vcxproj
deleted file mode 100644
index 720eb2931be72d..00000000000000
--- a/PCbuild/_msi.vcxproj
+++ /dev/null
@@ -1,115 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|ARM">
-      <Configuration>Debug</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|ARM64">
-      <Configuration>Debug</Configuration>
-      <Platform>ARM64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGInstrument|ARM">
-      <Configuration>PGInstrument</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGInstrument|ARM64">
-      <Configuration>PGInstrument</Configuration>
-      <Platform>ARM4</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGInstrument|Win32">
-      <Configuration>PGInstrument</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGInstrument|x64">
-      <Configuration>PGInstrument</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGUpdate|ARM">
-      <Configuration>PGUpdate</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGUpdate|ARM64">
-      <Configuration>PGUpdate</Configuration>
-      <Platform>ARM64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGUpdate|Win32">
-      <Configuration>PGUpdate</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGUpdate|x64">
-      <Configuration>PGUpdate</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|ARM">
-      <Configuration>Release</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|ARM64">
-      <Configuration>Release</Configuration>
-      <Platform>ARM64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{31FFC478-7B4A-43E8-9954-8D03E2187E9C}</ProjectGuid>
-    <RootNamespace>_msi</RootNamespace>
-    <Keyword>Win32Proj</Keyword>
-    <SupportPGO>false</SupportPGO>
-  </PropertyGroup>
-  <Import Project="python.props" />
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Label="Configuration">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <CharacterSet>NotSet</CharacterSet>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <PropertyGroup>
-    <TargetExt>.pyd</TargetExt>
-  </PropertyGroup>
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-    <Import Project="pyproject.props" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup>
-    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
-  </PropertyGroup>
-  <ItemDefinitionGroup>
-    <Link>
-      <AdditionalDependencies>cabinet.lib;msi.lib;rpcrt4.lib;%(AdditionalDependencies)</AdditionalDependencies>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\PC\_msi.c" />
-  </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="..\PC\python_nt.rc" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="pythoncore.vcxproj">
-      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
-      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
-    </ProjectReference>
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
\ No newline at end of file
diff --git a/PCbuild/_msi.vcxproj.filters b/PCbuild/_msi.vcxproj.filters
deleted file mode 100644
index a94fb18e61e485..00000000000000
--- a/PCbuild/_msi.vcxproj.filters
+++ /dev/null
@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <Filter Include="Source Files">
-      <UniqueIdentifier>{bdef7710-e433-4ac0-84e0-14f34454bd3e}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="Resource Files">
-      <UniqueIdentifier>{8513f324-7c13-4657-b463-5d686a8a5371}</UniqueIdentifier>
-    </Filter>
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="..\PC\_msi.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
-  </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="..\PC\python_nt.rc">
-      <Filter>Resource Files</Filter>
-    </ResourceCompile>
-  </ItemGroup>
-</Project>
\ No newline at end of file
diff --git a/PCbuild/_testcapi.vcxproj b/PCbuild/_testcapi.vcxproj
index 3db9426d1a25ff..1c15541d3ec735 100644
--- a/PCbuild/_testcapi.vcxproj
+++ b/PCbuild/_testcapi.vcxproj
@@ -99,19 +99,32 @@
     <ClCompile Include="..\Modules\_testcapi\vectorcall_limited.c" />
     <ClCompile Include="..\Modules\_testcapi\heaptype.c" />
     <ClCompile Include="..\Modules\_testcapi\heaptype_relative.c" />
+    <ClCompile Include="..\Modules\_testcapi\abstract.c" />
+    <ClCompile Include="..\Modules\_testcapi\bytearray.c" />
+    <ClCompile Include="..\Modules\_testcapi\bytes.c" />
     <ClCompile Include="..\Modules\_testcapi\unicode.c" />
-    <ClCompile Include="..\Modules\_testcapi\pytime.c" />
+    <ClCompile Include="..\Modules\_testcapi\dict.c" />
+    <ClCompile Include="..\Modules\_testcapi\set.c" />
+    <ClCompile Include="..\Modules\_testcapi\list.c" />
+    <ClCompile Include="..\Modules\_testcapi\tuple.c" />
     <ClCompile Include="..\Modules\_testcapi\datetime.c" />
     <ClCompile Include="..\Modules\_testcapi\docstring.c" />
     <ClCompile Include="..\Modules\_testcapi\mem.c" />
     <ClCompile Include="..\Modules\_testcapi\watchers.c" />
     <ClCompile Include="..\Modules\_testcapi\float.c" />
+    <ClCompile Include="..\Modules\_testcapi\complex.c" />
     <ClCompile Include="..\Modules\_testcapi\long.c" />
+    <ClCompile Include="..\Modules\_testcapi\numbers.c" />
     <ClCompile Include="..\Modules\_testcapi\structmember.c" />
     <ClCompile Include="..\Modules\_testcapi\exceptions.c" />
     <ClCompile Include="..\Modules\_testcapi\code.c" />
     <ClCompile Include="..\Modules\_testcapi\buffer.c" />
+    <ClCompile Include="..\Modules\_testcapi\pyatomic.c" />
     <ClCompile Include="..\Modules\_testcapi\pyos.c" />
+    <ClCompile Include="..\Modules\_testcapi\file.c" />
+    <ClCompile Include="..\Modules\_testcapi\codec.c" />
+    <ClCompile Include="..\Modules\_testcapi\sys.c" />
+    <ClCompile Include="..\Modules\_testcapi\hash.c" />
     <ClCompile Include="..\Modules\_testcapi\immortal.c" />
     <ClCompile Include="..\Modules\_testcapi\gc.c" />
   </ItemGroup>
@@ -131,4 +144,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/PCbuild/_testcapi.vcxproj.filters b/PCbuild/_testcapi.vcxproj.filters
index 8df4874659fa1c..6059959bb9a040 100644
--- a/PCbuild/_testcapi.vcxproj.filters
+++ b/PCbuild/_testcapi.vcxproj.filters
@@ -27,10 +27,28 @@
     <ClCompile Include="..\Modules\_testcapi\heaptype_relative.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\abstract.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\bytearray.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\bytes.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Modules\_testcapi\unicode.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\Modules\_testcapi\pytime.c">
+    <ClCompile Include="..\Modules\_testcapi\dict.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\set.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\list.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\tuple.c">
       <Filter>Source Files</Filter>
     </ClCompile>
     <ClCompile Include="..\Modules\_testcapi\datetime.c">
@@ -51,6 +69,12 @@
     <ClCompile Include="..\Modules\_testcapi\long.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\complex.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\numbers.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Modules\_testcapi\structmember.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -63,9 +87,24 @@
     <ClCompile Include="..\Modules\_testcapi\buffer.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\pyatomic.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Modules\_testcapi\pyos.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\file.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\codec.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\sys.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testcapi\hash.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Modules\_testcapi\gc.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -75,4 +114,4 @@
       <Filter>Resource Files</Filter>
     </ResourceCompile>
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/PCbuild/_testclinic.vcxproj b/PCbuild/_testclinic.vcxproj
new file mode 100644
index 00000000000000..e319b3c0f42e0f
--- /dev/null
+++ b/PCbuild/_testclinic.vcxproj
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|ARM">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|ARM64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|ARM">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|ARM64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM">
+      <Configuration>Release</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{A840DDFB-ED50-484B-B527-B32E7CF90FD5}</ProjectGuid>
+    <RootNamespace>_testclinic</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+    <SupportPGO>false</SupportPGO>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>NotSet</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <PropertyGroup>
+    <TargetExt>.pyd</TargetExt>
+  </PropertyGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+  </PropertyGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testclinic.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\python_nt.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/_testclinic.vcxproj.filters b/PCbuild/_testclinic.vcxproj.filters
new file mode 100644
index 00000000000000..4a2987eb27b223
--- /dev/null
+++ b/PCbuild/_testclinic.vcxproj.filters
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{5b0a9282-a01c-4b83-9fd4-6deb6c558f9c}</UniqueIdentifier>
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+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{6a89c8a9-5b51-4525-ac5c-7d0a22f9657e}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testclinic.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\python_nt.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/_testclinic_limited.vcxproj b/PCbuild/_testclinic_limited.vcxproj
new file mode 100644
index 00000000000000..b00b2be491b423
--- /dev/null
+++ b/PCbuild/_testclinic_limited.vcxproj
@@ -0,0 +1,109 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|ARM">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|ARM64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|ARM">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|ARM64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM">
+      <Configuration>Release</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}</ProjectGuid>
+    <RootNamespace>_testclinic_limited</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>NotSet</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <PropertyGroup>
+    <TargetExt>.pyd</TargetExt>
+  </PropertyGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+  </PropertyGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testclinic_limited.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\python_nt.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/_testclinic_limited.vcxproj.filters b/PCbuild/_testclinic_limited.vcxproj.filters
new file mode 100644
index 00000000000000..8ecdd99a4ac220
--- /dev/null
+++ b/PCbuild/_testclinic_limited.vcxproj.filters
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{2422278e-eeeb-4241-8182-433e2bc5a7fc}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{41f1cd52-b682-46aa-a7fd-7bdf81a18010}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testclinic_limited.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\python_nt.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
+</Project>
diff --git a/PCbuild/_testinternalcapi.vcxproj b/PCbuild/_testinternalcapi.vcxproj
index 6c5b12cd40e983..558f66ca95cd33 100644
--- a/PCbuild/_testinternalcapi.vcxproj
+++ b/PCbuild/_testinternalcapi.vcxproj
@@ -94,6 +94,10 @@
   </PropertyGroup>
   <ItemGroup>
     <ClCompile Include="..\Modules\_testinternalcapi.c" />
+    <ClCompile Include="..\Modules\_testinternalcapi\pytime.c" />
+    <ClCompile Include="..\Modules\_testinternalcapi\test_critical_sections.c" />
+    <ClCompile Include="..\Modules\_testinternalcapi\test_lock.c" />
+    <ClCompile Include="..\Modules\_testinternalcapi\set.c" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\python_nt.rc" />
diff --git a/PCbuild/_testinternalcapi.vcxproj.filters b/PCbuild/_testinternalcapi.vcxproj.filters
index 7734da0b7b426b..abfeeb39630daf 100644
--- a/PCbuild/_testinternalcapi.vcxproj.filters
+++ b/PCbuild/_testinternalcapi.vcxproj.filters
@@ -12,6 +12,15 @@
     <ClCompile Include="..\Modules\_testinternalcapi.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_testinternalcapi\pytime.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testinternalcapi\test_critical_sections.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Modules\_testinternalcapi\test_lock.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\python_nt.rc">
diff --git a/PCbuild/build.bat b/PCbuild/build.bat
index d333ceabd2e53a..e61267b5852a8f 100644
--- a/PCbuild/build.bat
+++ b/PCbuild/build.bat
@@ -33,6 +33,7 @@ echo.  -k  Attempt to kill any running Pythons before building (usually done
 echo.      automatically by the pythoncore project)
 echo.  --pgo          Build with Profile-Guided Optimization.  This flag
 echo.                 overrides -c and -d
+echo.  --disable-gil  Enable experimental support for running without the GIL.
 echo.  --test-marker  Enable the test marker within the build.
 echo.  --regen        Regenerate all opcodes, grammar and tokens.
 echo.
@@ -80,6 +81,7 @@ if "%~1"=="-q" (set verbose=/v:q /nologo /clp:summary) & shift & goto CheckOpts
 if "%~1"=="-k" (set kill=true) & shift & goto CheckOpts
 if "%~1"=="--pgo" (set do_pgo=true) & shift & goto CheckOpts
 if "%~1"=="--pgo-job" (set do_pgo=true) & (set pgo_job=%~2) & shift & shift & goto CheckOpts
+if "%~1"=="--disable-gil" (set UseDisableGil=true) & shift & goto CheckOpts
 if "%~1"=="--test-marker" (set UseTestMarker=true) & shift & goto CheckOpts
 if "%~1"=="-V" shift & goto Version
 if "%~1"=="--regen" (set Regen=true) & shift & goto CheckOpts
@@ -172,6 +174,7 @@ echo on
  /p:IncludeExternals=%IncludeExternals%^
  /p:IncludeCTypes=%IncludeCTypes%^
  /p:IncludeSSL=%IncludeSSL% /p:IncludeTkinter=%IncludeTkinter%^
+ /p:DisableGil=%UseDisableGil%^
  /p:UseTestMarker=%UseTestMarker% %GITProperty%^
  %1 %2 %3 %4 %5 %6 %7 %8 %9
 
diff --git a/PCbuild/find_python.bat b/PCbuild/find_python.bat
index 7af5503d80a0fc..d3f62c93869003 100644
--- a/PCbuild/find_python.bat
+++ b/PCbuild/find_python.bat
@@ -52,7 +52,7 @@
 @if "%_Py_NUGET%"=="" (set _Py_NUGET=%_Py_EXTERNALS_DIR%\nuget.exe)
 @if "%_Py_NUGET_URL%"=="" (set _Py_NUGET_URL=https://aka.ms/nugetclidl)
 @if NOT exist "%_Py_NUGET%" (
-    @echo Downloading nuget...
+    @if not "%_Py_Quiet%"=="1" @echo Downloading nuget...
     @rem NB: Must use single quotes around NUGET here, NOT double!
     @rem Otherwise, a space in the path would break things
     @rem If it fails, retry with any available copy of Python
@@ -63,7 +63,11 @@
 )
 
 @if not "%_Py_Quiet%"=="1" @echo Installing Python via nuget...
-@"%_Py_NUGET%" install pythonx86 -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
+@if not "%_Py_Quiet%"=="1" (
+    @"%_Py_NUGET%" install pythonx86 -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
+) else (
+    @"%_Py_NUGET%" install pythonx86 -Verbosity quiet -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
+)
 @rem Quote it here; it's not quoted later because "py -x.y" wouldn't work
 @if not errorlevel 1 (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") & (set _Py_Python_Source=found on nuget.org) & goto :found
 
diff --git a/PCbuild/get_externals.bat b/PCbuild/get_externals.bat
index 30ee873af9af24..94437f054d788c 100644
--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -53,11 +53,10 @@ echo.Fetching external libraries...
 set libraries=
 set libraries=%libraries%                                       bzip2-1.0.8
 if NOT "%IncludeLibffiSrc%"=="false" set libraries=%libraries%  libffi-3.4.4
-if NOT "%IncludeSSLSrc%"=="false" set libraries=%libraries%     openssl-1.1.1t
-set libraries=%libraries%                                       sqlite-3.41.2.0
+if NOT "%IncludeSSLSrc%"=="false" set libraries=%libraries%     openssl-3.0.11
+set libraries=%libraries%                                       sqlite-3.43.1.0
 if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tcl-core-8.6.13.0
 if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tk-8.6.13.0
-if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tix-8.4.3.6
 set libraries=%libraries%                                       xz-5.2.5
 set libraries=%libraries%                                       zlib-1.2.13
 
@@ -77,7 +76,7 @@ echo.Fetching external binaries...
 
 set binaries=
 if NOT "%IncludeLibffi%"=="false"  set binaries=%binaries% libffi-3.4.4
-if NOT "%IncludeSSL%"=="false"     set binaries=%binaries% openssl-bin-1.1.1t
+if NOT "%IncludeSSL%"=="false"     set binaries=%binaries% openssl-bin-3.0.11
 if NOT "%IncludeTkinter%"=="false" set binaries=%binaries% tcltk-8.6.13.0
 if NOT "%IncludeSSLSrc%"=="false"  set binaries=%binaries% nasm-2.11.06
 
diff --git a/PCbuild/openssl.props b/PCbuild/openssl.props
index 7071bb57c06cd7..5fd708b211e42d 100644
--- a/PCbuild/openssl.props
+++ b/PCbuild/openssl.props
@@ -10,10 +10,10 @@
     </Link>
   </ItemDefinitionGroup>
   <PropertyGroup>
-    <_DLLSuffix>-1_1</_DLLSuffix>
+    <_DLLSuffix>-3</_DLLSuffix>
     <_DLLSuffix Condition="$(Platform) == 'ARM'">$(_DLLSuffix)-arm</_DLLSuffix>
     <_DLLSuffix Condition="$(Platform) == 'ARM64'">$(_DLLSuffix)-arm64</_DLLSuffix>
-    <OpenSSLDLLSuffix>$(_DLLSuffix)</OpenSSLDLLSuffix>
+    <OpenSSLDLLSuffix Condition="$(OpenSSLDLLSuffix) == ''">$(_DLLSuffix)</OpenSSLDLLSuffix>
   </PropertyGroup>
   <ItemGroup>
     <_SSLDLL Include="$(opensslOutDir)\libcrypto$(_DLLSuffix).dll" />
diff --git a/PCbuild/pcbuild.proj b/PCbuild/pcbuild.proj
index e13a0d409293f4..b7b78be768d7ec 100644
--- a/PCbuild/pcbuild.proj
+++ b/PCbuild/pcbuild.proj
@@ -64,7 +64,7 @@
     <!-- pyshellext.dll -->
     <Projects Include="pyshellext.vcxproj" />
     <!-- Extension modules -->
-    <ExtensionModules Include="_asyncio;_zoneinfo;_decimal;_elementtree;_msi;_multiprocessing;_overlapped;pyexpat;_queue;select;unicodedata;winsound;_uuid;_wmi" />
+    <ExtensionModules Include="_asyncio;_zoneinfo;_decimal;_elementtree;_multiprocessing;_overlapped;pyexpat;_queue;select;unicodedata;winsound;_uuid;_wmi" />
     <ExtensionModules Include="_ctypes" Condition="$(IncludeCTypes)" />
     <!-- Extension modules that require external sources -->
     <ExternalModules Include="_bz2;_lzma;_sqlite3" />
@@ -77,7 +77,7 @@
     <ExtensionModules Include="@(ExternalModules->'%(Identity)')" Condition="$(IncludeExternals)" />
     <Projects Include="@(ExtensionModules->'%(Identity).vcxproj')" Condition="$(IncludeExtensions)" />
     <!-- Test modules -->
-    <TestModules Include="_ctypes_test;_testbuffer;_testcapi;_testinternalcapi;_testembed;_testimportmultiple;_testmultiphase;_testsinglephase;_testconsole" />
+    <TestModules Include="_ctypes_test;_testbuffer;_testcapi;_testinternalcapi;_testembed;_testimportmultiple;_testmultiphase;_testsinglephase;_testconsole;_testclinic;_testclinic_limited" />
     <TestModules Include="xxlimited" Condition="'$(Configuration)' == 'Release'" />
     <TestModules Include="xxlimited_35" Condition="'$(Configuration)' == 'Release'" />
     <Projects Include="@(TestModules->'%(Identity).vcxproj')" Condition="$(IncludeTests)">
diff --git a/PCbuild/pcbuild.sln b/PCbuild/pcbuild.sln
index 848d59504381cc..a0b5fbd1304b41 100644
--- a/PCbuild/pcbuild.sln
+++ b/PCbuild/pcbuild.sln
@@ -10,42 +10,43 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "python", "python.vcxproj", "{B11D750F-CD1F-4A96-85CE-E69A5C5259F9}"
 	ProjectSection(ProjectDependencies) = postProject
-		{9E48B300-37D1-11DD-8C41-005056C00008} = {9E48B300-37D1-11DD-8C41-005056C00008}
-		{9EC7190A-249F-4180-A900-548FDCF3055F} = {9EC7190A-249F-4180-A900-548FDCF3055F}
-		{78D80A15-BD8C-44E2-B49E-1F05B0A0A687} = {78D80A15-BD8C-44E2-B49E-1F05B0A0A687}
-		{6901D91C-6E48-4BB7-9FEC-700C8131DF1D} = {6901D91C-6E48-4BB7-9FEC-700C8131DF1D}
-		{54B1431F-B86B-4ACB-B28C-88BCF93191D8} = {54B1431F-B86B-4ACB-B28C-88BCF93191D8}
-		{F749B822-B489-4CA5-A3AD-CE078F5F338A} = {F749B822-B489-4CA5-A3AD-CE078F5F338A}
-		{D06B6426-4762-44CC-8BAD-D79052507F2F} = {D06B6426-4762-44CC-8BAD-D79052507F2F}
-		{36D0C52C-DF4E-45D0-8BC7-E294C3ABC781} = {36D0C52C-DF4E-45D0-8BC7-E294C3ABC781}
-		{CB435430-EBB1-478B-8F4E-C256F6838F55} = {CB435430-EBB1-478B-8F4E-C256F6838F55}
-		{17E1E049-C309-4D79-843F-AE483C264AEA} = {17E1E049-C309-4D79-843F-AE483C264AEA}
-		{384C224A-7474-476E-A01B-750EA7DE918C} = {384C224A-7474-476E-A01B-750EA7DE918C}
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410} = {01FDF29A-40A1-46DF-84F5-85EBBD2A2410}
+		{0E9791DB-593A-465F-98BC-681011311617} = {0E9791DB-593A-465F-98BC-681011311617}
+		{0E9791DB-593A-465F-98BC-681011311618} = {0E9791DB-593A-465F-98BC-681011311618}
 		{12728250-16EC-4DC6-94D7-E21DD88947F8} = {12728250-16EC-4DC6-94D7-E21DD88947F8}
-		{86937F53-C189-40EF-8CE8-8759D8E7D480} = {86937F53-C189-40EF-8CE8-8759D8E7D480}
-		{28B5D777-DDF2-4B6B-B34F-31D938813856} = {28B5D777-DDF2-4B6B-B34F-31D938813856}
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C} = {31FFC478-7B4A-43E8-9954-8D03E2187E9C}
-		{F9D71780-F393-11E0-BE50-0800200C9A66} = {F9D71780-F393-11E0-BE50-0800200C9A66}
-		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D} = {494BAC80-A60C-43A9-99E7-ACB691CE2C4D}
-		{C6E20F84-3247-4AD6-B051-B073268F73BA} = {C6E20F84-3247-4AD6-B051-B073268F73BA}
-		{B244E787-C445-441C-BDF4-5A4F1A3A1E51} = {B244E787-C445-441C-BDF4-5A4F1A3A1E51}
-		{18CAE28C-B454-46C1-87A0-493D91D97F03} = {18CAE28C-B454-46C1-87A0-493D91D97F03}
 		{13CECB97-4119-4316-9D42-8534019A5A44} = {13CECB97-4119-4316-9D42-8534019A5A44}
-		{885D4898-D08D-4091-9C40-C700CFE3FC5A} = {885D4898-D08D-4091-9C40-C700CFE3FC5A}
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10} = {16BFE6F0-22EF-40B5-B831-7E937119EF10}
+		{17E1E049-C309-4D79-843F-AE483C264AEA} = {17E1E049-C309-4D79-843F-AE483C264AEA}
+		{18CAE28C-B454-46C1-87A0-493D91D97F03} = {18CAE28C-B454-46C1-87A0-493D91D97F03}
+		{2097F1C1-597C-4167-93E3-656A7D6339B2} = {2097F1C1-597C-4167-93E3-656A7D6339B2}
+		{28B5D777-DDF2-4B6B-B34F-31D938813856} = {28B5D777-DDF2-4B6B-B34F-31D938813856}
+		{36D0C52C-DF4E-45D0-8BC7-E294C3ABC781} = {36D0C52C-DF4E-45D0-8BC7-E294C3ABC781}
+		{384C224A-7474-476E-A01B-750EA7DE918C} = {384C224A-7474-476E-A01B-750EA7DE918C}
 		{447F05A8-F581-4CAC-A466-5AC7936E207E} = {447F05A8-F581-4CAC-A466-5AC7936E207E}
-		{ECC7CEAC-A5E5-458E-BB9E-2413CC847881} = {ECC7CEAC-A5E5-458E-BB9E-2413CC847881}
 		{4946ECAC-2E69-4BF8-A90A-F5136F5094DF} = {4946ECAC-2E69-4BF8-A90A-F5136F5094DF}
-		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D} = {FDB84CBB-2FB6-47C8-A2D6-091E0833239D}
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D} = {494BAC80-A60C-43A9-99E7-ACB691CE2C4D}
+		{54B1431F-B86B-4ACB-B28C-88BCF93191D8} = {54B1431F-B86B-4ACB-B28C-88BCF93191D8}
+		{6901D91C-6E48-4BB7-9FEC-700C8131DF1D} = {6901D91C-6E48-4BB7-9FEC-700C8131DF1D}
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62} = {6DAC66D9-E703-4624-BE03-49112AB5AA62}
 		{73FCD2BD-F133-46B7-8EC1-144CD82A59D5} = {73FCD2BD-F133-46B7-8EC1-144CD82A59D5}
-		{2097F1C1-597C-4167-93E3-656A7D6339B2} = {2097F1C1-597C-4167-93E3-656A7D6339B2}
-		{A2697BD3-28C1-4AEC-9106-8B748639FD16} = {A2697BD3-28C1-4AEC-9106-8B748639FD16}
+		{78D80A15-BD8C-44E2-B49E-1F05B0A0A687} = {78D80A15-BD8C-44E2-B49E-1F05B0A0A687}
+		{86937F53-C189-40EF-8CE8-8759D8E7D480} = {86937F53-C189-40EF-8CE8-8759D8E7D480}
+		{885D4898-D08D-4091-9C40-C700CFE3FC5A} = {885D4898-D08D-4091-9C40-C700CFE3FC5A}
 		{900342D7-516A-4469-B1AD-59A66E49A25F} = {900342D7-516A-4469-B1AD-59A66E49A25F}
-		{6DAC66D9-E703-4624-BE03-49112AB5AA62} = {6DAC66D9-E703-4624-BE03-49112AB5AA62}
-		{0E9791DB-593A-465F-98BC-681011311617} = {0E9791DB-593A-465F-98BC-681011311617}
-		{0E9791DB-593A-465F-98BC-681011311618} = {0E9791DB-593A-465F-98BC-681011311618}
+		{9E48B300-37D1-11DD-8C41-005056C00008} = {9E48B300-37D1-11DD-8C41-005056C00008}
+		{9EC7190A-249F-4180-A900-548FDCF3055F} = {9EC7190A-249F-4180-A900-548FDCF3055F}
+		{A2697BD3-28C1-4AEC-9106-8B748639FD16} = {A2697BD3-28C1-4AEC-9106-8B748639FD16}
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5} = {A840DDFB-ED50-484B-B527-B32E7CF90FD5}
+		{B244E787-C445-441C-BDF4-5A4F1A3A1E51} = {B244E787-C445-441C-BDF4-5A4F1A3A1E51}
+		{C6E20F84-3247-4AD6-B051-B073268F73BA} = {C6E20F84-3247-4AD6-B051-B073268F73BA}
+		{CB435430-EBB1-478B-8F4E-C256F6838F55} = {CB435430-EBB1-478B-8F4E-C256F6838F55}
+		{D06B6426-4762-44CC-8BAD-D79052507F2F} = {D06B6426-4762-44CC-8BAD-D79052507F2F}
 		{EB6E69DD-04BF-4543-9B92-49FAABCEAC2E} = {EB6E69DD-04BF-4543-9B92-49FAABCEAC2E}
-		{16BFE6F0-22EF-40B5-B831-7E937119EF10} = {16BFE6F0-22EF-40B5-B831-7E937119EF10}
+		{ECC7CEAC-A5E5-458E-BB9E-2413CC847881} = {ECC7CEAC-A5E5-458E-BB9E-2413CC847881}
+		{F749B822-B489-4CA5-A3AD-CE078F5F338A} = {F749B822-B489-4CA5-A3AD-CE078F5F338A}
+		{F9D71780-F393-11E0-BE50-0800200C9A66} = {F9D71780-F393-11E0-BE50-0800200C9A66}
 		{FCBE1EF2-E0F0-40B1-88B5-00A35D378742} = {FCBE1EF2-E0F0-40B1-88B5-00A35D378742}
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D} = {FDB84CBB-2FB6-47C8-A2D6-091E0833239D}
 	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pythoncore", "pythoncore.vcxproj", "{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}"
@@ -68,8 +69,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_ctypes_test", "_ctypes_tes
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_elementtree", "_elementtree.vcxproj", "{17E1E049-C309-4D79-843F-AE483C264AEA}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_msi", "_msi.vcxproj", "{31FFC478-7B4A-43E8-9954-8D03E2187E9C}"
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_socket", "_socket.vcxproj", "{86937F53-C189-40EF-8CE8-8759D8E7D480}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_sqlite3", "_sqlite3.vcxproj", "{13CECB97-4119-4316-9D42-8534019A5A44}"
@@ -78,6 +77,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_ssl", "_ssl.vcxproj", "{C6
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testcapi", "_testcapi.vcxproj", "{6901D91C-6E48-4BB7-9FEC-700C8131DF1D}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testclinic", "_testclinic.vcxproj", "{A840DDFB-ED50-484B-B527-B32E7CF90FD5}"
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testinternalcapi", "_testinternalcapi.vcxproj", "{900342D7-516A-4469-B1AD-59A66E49A25F}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testimportmultiple", "_testimportmultiple.vcxproj", "{36D0C52C-DF4E-45D0-8BC7-E294C3ABC781}"
@@ -156,6 +157,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_uuid", "_uuid.vcxproj", "{
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_wmi", "_wmi.vcxproj", "{54B1431F-B86B-4ACB-B28C-88BCF93191D8}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testclinic_limited", "_testclinic_limited.vcxproj", "{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|ARM = Debug|ARM
@@ -432,38 +435,6 @@ Global
 		{17E1E049-C309-4D79-843F-AE483C264AEA}.Release|Win32.Build.0 = Release|Win32
 		{17E1E049-C309-4D79-843F-AE483C264AEA}.Release|x64.ActiveCfg = Release|x64
 		{17E1E049-C309-4D79-843F-AE483C264AEA}.Release|x64.Build.0 = Release|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|ARM.ActiveCfg = Debug|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|ARM.Build.0 = Debug|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|ARM64.ActiveCfg = Debug|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|ARM64.Build.0 = Debug|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|Win32.ActiveCfg = Debug|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|Win32.Build.0 = Debug|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|x64.ActiveCfg = Debug|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Debug|x64.Build.0 = Debug|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|ARM.ActiveCfg = PGInstrument|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|ARM.Build.0 = PGInstrument|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|ARM64.ActiveCfg = PGInstrument|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|ARM64.Build.0 = PGInstrument|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGInstrument|x64.Build.0 = PGInstrument|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|ARM.ActiveCfg = PGUpdate|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|ARM.Build.0 = PGUpdate|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|ARM64.ActiveCfg = PGUpdate|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|ARM64.Build.0 = PGUpdate|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.PGUpdate|x64.Build.0 = PGUpdate|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|ARM.ActiveCfg = Release|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|ARM.Build.0 = Release|ARM
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|ARM64.ActiveCfg = Release|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|ARM64.Build.0 = Release|ARM64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|Win32.ActiveCfg = Release|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|Win32.Build.0 = Release|Win32
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|x64.ActiveCfg = Release|x64
-		{31FFC478-7B4A-43E8-9954-8D03E2187E9C}.Release|x64.Build.0 = Release|x64
 		{86937F53-C189-40EF-8CE8-8759D8E7D480}.Debug|ARM.ActiveCfg = Debug|ARM
 		{86937F53-C189-40EF-8CE8-8759D8E7D480}.Debug|ARM.Build.0 = Debug|ARM
 		{86937F53-C189-40EF-8CE8-8759D8E7D480}.Debug|ARM64.ActiveCfg = Debug|ARM64
@@ -592,6 +563,38 @@ Global
 		{6901D91C-6E48-4BB7-9FEC-700C8131DF1D}.Release|Win32.Build.0 = Release|Win32
 		{6901D91C-6E48-4BB7-9FEC-700C8131DF1D}.Release|x64.ActiveCfg = Release|x64
 		{6901D91C-6E48-4BB7-9FEC-700C8131DF1D}.Release|x64.Build.0 = Release|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|ARM.ActiveCfg = Debug|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|ARM.Build.0 = Debug|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|ARM64.Build.0 = Debug|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|Win32.ActiveCfg = Debug|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|Win32.Build.0 = Debug|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|x64.ActiveCfg = Debug|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Debug|x64.Build.0 = Debug|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|ARM.ActiveCfg = PGInstrument|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|ARM.Build.0 = PGInstrument|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|ARM64.ActiveCfg = PGInstrument|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|ARM64.Build.0 = PGInstrument|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|ARM.ActiveCfg = PGUpdate|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|ARM.Build.0 = PGUpdate|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|ARM64.ActiveCfg = PGUpdate|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|ARM64.Build.0 = PGUpdate|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|ARM.ActiveCfg = Release|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|ARM.Build.0 = Release|ARM
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|ARM64.ActiveCfg = Release|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|ARM64.Build.0 = Release|ARM64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|Win32.ActiveCfg = Release|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|Win32.Build.0 = Release|Win32
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|x64.ActiveCfg = Release|x64
+		{A840DDFB-ED50-484B-B527-B32E7CF90FD5}.Release|x64.Build.0 = Release|x64
 		{900342D7-516A-4469-B1AD-59A66E49A25F}.Debug|ARM.ActiveCfg = Debug|ARM
 		{900342D7-516A-4469-B1AD-59A66E49A25F}.Debug|ARM.Build.0 = Debug|ARM
 		{900342D7-516A-4469-B1AD-59A66E49A25F}.Debug|ARM64.ActiveCfg = Debug|ARM64
@@ -1613,6 +1616,38 @@ Global
 		{54B1431F-B86B-4ACB-B28C-88BCF93191D8}.Release|Win32.Build.0 = Release|Win32
 		{54B1431F-B86B-4ACB-B28C-88BCF93191D8}.Release|x64.ActiveCfg = Release|x64
 		{54B1431F-B86B-4ACB-B28C-88BCF93191D8}.Release|x64.Build.0 = Release|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|ARM.ActiveCfg = Debug|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|ARM.Build.0 = Debug|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|ARM64.Build.0 = Debug|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|Win32.ActiveCfg = Debug|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|Win32.Build.0 = Debug|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|x64.ActiveCfg = Debug|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Debug|x64.Build.0 = Debug|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|ARM.ActiveCfg = PGInstrument|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|ARM.Build.0 = PGInstrument|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|ARM64.ActiveCfg = PGInstrument|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|ARM64.Build.0 = PGInstrument|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|ARM.ActiveCfg = PGUpdate|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|ARM.Build.0 = PGUpdate|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|ARM64.ActiveCfg = PGUpdate|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|ARM64.Build.0 = PGUpdate|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|ARM.ActiveCfg = Release|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|ARM.Build.0 = Release|ARM
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|ARM64.ActiveCfg = Release|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|ARM64.Build.0 = Release|ARM64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|Win32.ActiveCfg = Release|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|Win32.Build.0 = Release|Win32
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|x64.ActiveCfg = Release|x64
+		{01FDF29A-40A1-46DF-84F5-85EBBD2A2410}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/PCbuild/prepare_tcltk.bat b/PCbuild/prepare_tcltk.bat
index 4a43ed1582ce33..ecef247282094d 100644
--- a/PCbuild/prepare_tcltk.bat
+++ b/PCbuild/prepare_tcltk.bat
@@ -48,12 +48,9 @@ call "%PCBUILD%\get_externals.bat" --tkinter-src %ORG_SETTING%
 
 %MSBUILD% "%PCBUILD%\tcl.vcxproj" /p:Configuration=Release /p:Platform=Win32
 %MSBUILD% "%PCBUILD%\tk.vcxproj" /p:Configuration=Release /p:Platform=Win32
-%MSBUILD% "%PCBUILD%\tix.vcxproj" /p:Configuration=Release /p:Platform=Win32
 
 %MSBUILD% "%PCBUILD%\tcl.vcxproj" /p:Configuration=Release /p:Platform=x64
 %MSBUILD% "%PCBUILD%\tk.vcxproj" /p:Configuration=Release /p:Platform=x64
-%MSBUILD% "%PCBUILD%\tix.vcxproj" /p:Configuration=Release /p:Platform=x64
 
 %MSBUILD% "%PCBUILD%\tcl.vcxproj" /p:Configuration=Release /p:Platform=ARM64
 %MSBUILD% "%PCBUILD%\tk.vcxproj" /p:Configuration=Release /p:Platform=ARM64
-%MSBUILD% "%PCBUILD%\tix.vcxproj" /p:Configuration=Release /p:Platform=ARM64
diff --git a/PCbuild/pyproject.props b/PCbuild/pyproject.props
index 36c4c269d05da9..0acc7045c39a26 100644
--- a/PCbuild/pyproject.props
+++ b/PCbuild/pyproject.props
@@ -25,7 +25,7 @@
     <_VCToolsVersion>$([System.Version]::Parse(`$(VCToolsVersion)`).Major).$([System.Version]::Parse(`$(VCToolsVersion)`).Minor)</_VCToolsVersion>
 
     <!-- See https://developercommunity.visualstudio.com/t/Regression-in-MSVC-1433-1434-ARM64-co/10224361 -->
-    <MSVCHasBrokenARM64Clamping Condition="$(_VCToolsVersion) == '14.34'">true</MSVCHasBrokenARM64Clamping>
+    <MSVCHasBrokenARM64Clamping Condition="$(_VCToolsVersion) == '14.34' or $(_VCToolsVersion) == '14.35'">true</MSVCHasBrokenARM64Clamping>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -38,8 +38,10 @@
   </PropertyGroup>
   <ItemDefinitionGroup>
     <ClCompile>
-      <AdditionalIncludeDirectories>$(PySourcePath)Include;$(PySourcePath)Include\internal;$(PySourcePath)PC;$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(PySourcePath)Include;$(PySourcePath)Include\internal;$(PySourcePath)Include\internal\mimalloc;$(PySourcePath)PC;$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;$(_Py3NamePreprocessorDefinition);$(_PlatformPreprocessorDefinition)$(_DebugPreprocessorDefinition)$(_PydPreprocessorDefinition)%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(DisableGil)' == 'true'">Py_GIL_DISABLED=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions Condition="'$(SupportPGO)' and ($(Configuration) == 'PGInstrument' or $(Configuration) == 'PGUpdate')">_Py_USING_PGO=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
 
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
@@ -232,7 +234,10 @@ public override bool Execute() {
   </Target>
 
   <Target Name="FindVCRuntime" Returns="VCRuntimeDLL" DependsOnTargets="FindVCRedistDir">
-    <ItemGroup Condition="$(VCInstallDir) != ''">
+    <ItemGroup Condition="$(VCRuntimeDLL) != ''">
+      <VCRuntimeDLL Include="$(VCRuntimeDLL)" />
+    </ItemGroup>
+    <ItemGroup Condition="$(VCInstallDir) != '' and $(VCRuntimeDLL) == ''">
       <VCRuntimeDLL Include="$(VCRedistDir)\Microsoft.VC*.CRT\vcruntime*.dll" />
     </ItemGroup>
 
diff --git a/PCbuild/python.props b/PCbuild/python.props
index 29add07795f900..496bc3dd4cf794 100644
--- a/PCbuild/python.props
+++ b/PCbuild/python.props
@@ -68,14 +68,14 @@
   <Import Project="$(ExternalProps)" Condition="$(ExternalProps) != '' and Exists('$(ExternalProps)')" />
 
   <PropertyGroup>
-    <sqlite3Dir Condition="$(sqlite3Dir) == ''">$(ExternalsDir)sqlite-3.41.2.0\</sqlite3Dir>
+    <sqlite3Dir Condition="$(sqlite3Dir) == ''">$(ExternalsDir)sqlite-3.43.1.0\</sqlite3Dir>
     <bz2Dir Condition="$(bz2Dir) == ''">$(ExternalsDir)bzip2-1.0.8\</bz2Dir>
     <lzmaDir Condition="$(lzmaDir) == ''">$(ExternalsDir)xz-5.2.5\</lzmaDir>
     <libffiDir Condition="$(libffiDir) == ''">$(ExternalsDir)libffi-3.4.4\</libffiDir>
     <libffiOutDir Condition="$(libffiOutDir) == ''">$(libffiDir)$(ArchName)\</libffiOutDir>
     <libffiIncludeDir Condition="$(libffiIncludeDir) == ''">$(libffiOutDir)include</libffiIncludeDir>
-    <opensslDir Condition="$(opensslDir) == ''">$(ExternalsDir)openssl-1.1.1t\</opensslDir>
-    <opensslOutDir Condition="$(opensslOutDir) == ''">$(ExternalsDir)openssl-bin-1.1.1t\$(ArchName)\</opensslOutDir>
+    <opensslDir Condition="$(opensslDir) == ''">$(ExternalsDir)openssl-3.0.11\</opensslDir>
+    <opensslOutDir Condition="$(opensslOutDir) == ''">$(ExternalsDir)openssl-bin-3.0.11\$(ArchName)\</opensslOutDir>
     <opensslIncludeDir Condition="$(opensslIncludeDir) == ''">$(opensslOutDir)include</opensslIncludeDir>
     <nasmDir Condition="$(nasmDir) == ''">$(ExternalsDir)\nasm-2.11.06\</nasmDir>
     <zlibDir Condition="$(zlibDir) == ''">$(ExternalsDir)\zlib-1.2.13\</zlibDir>
diff --git a/PCbuild/python.vcxproj b/PCbuild/python.vcxproj
index f4640454a73070..8b733865962373 100644
--- a/PCbuild/python.vcxproj
+++ b/PCbuild/python.vcxproj
@@ -95,7 +95,7 @@
     <Link>
       <SubSystem>Console</SubSystem>
       <StackReserveSize Condition="$(Configuration) != 'Debug'">2000000</StackReserveSize>
-      <StackReserveSize Condition="$(Configuration) == 'Debug'">8000000</StackReserveSize>
+      <StackReserveSize Condition="$(Configuration) == 'Debug'">12000000</StackReserveSize>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index 28b1517c6f6b3a..278f1f5622543c 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -152,32 +152,37 @@
     <ClInclude Include="..\Include\cpython\genobject.h" />
     <ClInclude Include="..\Include\cpython\import.h" />
     <ClInclude Include="..\Include\cpython\initconfig.h" />
+    <ClInclude Include="..\Include\cpython\interpreteridobject.h" />
     <ClInclude Include="..\Include\cpython\listobject.h" />
     <ClInclude Include="..\Include\cpython\longintrepr.h" />
     <ClInclude Include="..\Include\cpython\longobject.h" />
     <ClInclude Include="..\Include\cpython\memoryobject.h" />
     <ClInclude Include="..\Include\cpython\methodobject.h" />
-    <ClInclude Include="..\Include\cpython\modsupport.h" />
     <ClInclude Include="..\Include\cpython\object.h" />
     <ClInclude Include="..\Include\cpython\objimpl.h" />
     <ClInclude Include="..\Include\cpython\odictobject.h" />
+    <ClInclude Include="..\Include\cpython\optimizer.h" />
     <ClInclude Include="..\Include\cpython\parser_interface.h" />
     <ClInclude Include="..\Include\cpython\picklebufobject.h" />
     <ClInclude Include="..\Include\cpython\pyarena.h" />
+    <ClInclude Include="..\Include\cpython\pyatomic.h" />
+    <ClInclude Include="..\Include\cpython\pyatomic_msc.h" />
     <ClInclude Include="..\Include\cpython\pyctype.h" />
     <ClInclude Include="..\Include\cpython\pydebug.h" />
     <ClInclude Include="..\Include\cpython\pyerrors.h" />
     <ClInclude Include="..\Include\cpython\pyfpe.h" />
     <ClInclude Include="..\Include\cpython\pyframe.h" />
+    <ClInclude Include="..\Include\cpython\pyhash.h" />
     <ClInclude Include="..\Include\cpython\pylifecycle.h" />
     <ClInclude Include="..\Include\cpython\pymem.h" />
     <ClInclude Include="..\Include\cpython\pystate.h" />
+    <ClInclude Include="..\Include\cpython\pystats.h" />
     <ClInclude Include="..\Include\cpython\pythonrun.h" />
     <ClInclude Include="..\Include\cpython\pythread.h" />
-    <ClInclude Include="..\Include\cpython\pytime.h" />
     <ClInclude Include="..\Include\cpython\setobject.h" />
     <ClInclude Include="..\Include\cpython\sysmodule.h" />
     <ClInclude Include="..\Include\cpython\traceback.h" />
+    <ClInclude Include="..\Include\cpython\tracemalloc.h" />
     <ClInclude Include="..\Include\cpython\tupleobject.h" />
     <ClInclude Include="..\Include\cpython\unicodeobject.h" />
     <ClInclude Include="..\Include\cpython\warnings.h" />
@@ -198,19 +203,22 @@
     <ClInclude Include="..\Include\internal\pycore_ast.h" />
     <ClInclude Include="..\Include\internal\pycore_ast_state.h" />
     <ClInclude Include="..\Include\internal\pycore_atexit.h" />
-    <ClInclude Include="..\Include\internal\pycore_atomic.h" />
-    <ClInclude Include="..\Include\internal\pycore_atomic_funcs.h" />
     <ClInclude Include="..\Include\internal\pycore_bitutils.h" />
     <ClInclude Include="..\Include\internal\pycore_bytes_methods.h" />
     <ClInclude Include="..\Include\internal\pycore_bytesobject.h" />
     <ClInclude Include="..\Include\internal\pycore_call.h" />
+    <ClInclude Include="..\Include\internal\pycore_capsule.h" />
     <ClInclude Include="..\Include\internal\pycore_ceval.h" />
     <ClInclude Include="..\Include\internal\pycore_ceval_state.h" />
     <ClInclude Include="..\Include\internal\pycore_cfg.h" />
     <ClInclude Include="..\Include\internal\pycore_code.h" />
+    <ClInclude Include="..\Include\internal\pycore_codecs.h" />
     <ClInclude Include="..\Include\internal\pycore_compile.h" />
+    <ClInclude Include="..\Include\internal\pycore_complexobject.h" />
     <ClInclude Include="..\Include\internal\pycore_condvar.h" />
     <ClInclude Include="..\Include\internal\pycore_context.h" />
+    <ClInclude Include="..\Include\internal\pycore_critical_section.h" />
+    <ClInclude Include="..\Include\internal\pycore_crossinterp.h" />
     <ClInclude Include="..\Include\internal\pycore_descrobject.h" />
     <ClInclude Include="..\Include\internal\pycore_dict.h" />
     <ClInclude Include="..\Include\internal\pycore_dict_state.h" />
@@ -231,19 +239,25 @@
     <ClInclude Include="..\Include\internal\pycore_global_objects_fini_generated.h" />
     <ClInclude Include="..\Include\internal\pycore_hamt.h" />
     <ClInclude Include="..\Include\internal\pycore_hashtable.h" />
+    <ClInclude Include="..\Include\internal\pycore_identifier.h" />
     <ClInclude Include="..\Include\internal\pycore_import.h" />
+    <ClInclude Include="..\Include\internal\pycore_importdl.h" />
     <ClInclude Include="..\Include\internal\pycore_initconfig.h" />
     <ClInclude Include="..\Include\internal\pycore_interp.h" />
-    <ClInclude Include="..\Include\internal\pycore_interpreteridobject.h" />
     <ClInclude Include="..\Include\internal\pycore_intrinsics.h" />
     <ClInclude Include="..\Include\internal\pycore_list.h" />
+    <ClInclude Include="..\Include\internal\pycore_llist.h" />
+    <ClInclude Include="..\Include\internal\pycore_lock.h" />
     <ClInclude Include="..\Include\internal\pycore_long.h" />
+    <ClInclude Include="..\Include\internal\pycore_modsupport.h" />
     <ClInclude Include="..\Include\internal\pycore_moduleobject.h" />
     <ClInclude Include="..\Include\internal\pycore_namespace.h" />
     <ClInclude Include="..\Include\internal\pycore_object.h" />
     <ClInclude Include="..\Include\internal\pycore_object_state.h" />
     <ClInclude Include="..\Include\internal\pycore_obmalloc.h" />
     <ClInclude Include="..\Include\internal\pycore_obmalloc_init.h" />
+    <ClInclude Include="..\Include\internal\pycore_optimizer.h" />
+    <ClInclude Include="..\Include\internal\pycore_parking_lot.h" />
     <ClInclude Include="..\Include\internal\pycore_pathconfig.h" />
     <ClInclude Include="..\Include\internal\pycore_pyarena.h" />
     <ClInclude Include="..\Include\internal\pycore_pyerrors.h" />
@@ -252,11 +266,15 @@
     <ClInclude Include="..\Include\internal\pycore_pymem.h" />
     <ClInclude Include="..\Include\internal\pycore_pymem_init.h" />
     <ClInclude Include="..\Include\internal\pycore_pystate.h" />
+    <ClInclude Include="..\Include\internal\pycore_pystats.h" />
+    <ClInclude Include="..\Include\internal\pycore_pythonrun.h" />
     <ClInclude Include="..\Include\internal\pycore_pythread.h" />
     <ClInclude Include="..\Include\internal\pycore_range.h" />
     <ClInclude Include="..\Include\internal\pycore_runtime.h" />
     <ClInclude Include="..\Include\internal\pycore_runtime_init.h" />
     <ClInclude Include="..\Include\internal\pycore_runtime_init_generated.h" />
+    <ClInclude Include="..\Include\internal\pycore_semaphore.h" />
+    <ClInclude Include="..\Include\internal\pycore_setobject.h" />
     <ClInclude Include="..\Include\internal\pycore_signal.h" />
     <ClInclude Include="..\Include\internal\pycore_sliceobject.h" />
     <ClInclude Include="..\Include\internal\pycore_strhex.h" />
@@ -267,13 +285,18 @@
     <ClInclude Include="..\Include\internal\pycore_token.h" />
     <ClInclude Include="..\Include\internal\pycore_traceback.h" />
     <ClInclude Include="..\Include\internal\pycore_tracemalloc.h" />
+    <ClInclude Include="..\Include\internal\pycore_tstate.h" />
     <ClInclude Include="..\Include\internal\pycore_tuple.h" />
     <ClInclude Include="..\Include\internal\pycore_typeobject.h" />
+    <ClInclude Include="..\Include\internal\pycore_typevarobject.h" />
     <ClInclude Include="..\Include\internal\pycore_ucnhash.h" />
     <ClInclude Include="..\Include\internal\pycore_unionobject.h" />
     <ClInclude Include="..\Include\internal\pycore_unicodeobject.h" />
     <ClInclude Include="..\Include\internal\pycore_unicodeobject_generated.h" />
+    <ClInclude Include="..\Include\internal\pycore_uops.h" />
     <ClInclude Include="..\Include\internal\pycore_warnings.h" />
+    <ClInclude Include="..\Include\internal\pycore_weakref.h" />
+    <ClInclude Include="..\Include\interpreteridobject.h" />
     <ClInclude Include="..\Include\intrcheck.h" />
     <ClInclude Include="..\Include\iterobject.h" />
     <ClInclude Include="..\Include\listobject.h" />
@@ -281,6 +304,12 @@
     <ClInclude Include="..\Include\marshal.h" />
     <ClInclude Include="..\Include\memoryobject.h" />
     <ClInclude Include="..\Include\methodobject.h" />
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\atomic.h" />
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\internal.h" />
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\prim.h" />
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\track.h" />
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\types.h" />
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc.h" />
     <ClInclude Include="..\Include\modsupport.h" />
     <ClInclude Include="..\Include\moduleobject.h" />
     <ClInclude Include="..\Include\object.h" />
@@ -290,6 +319,7 @@
     <ClInclude Include="..\Include\osmodule.h" />
     <ClInclude Include="..\Include\patchlevel.h" />
     <ClInclude Include="..\Include\py_curses.h" />
+    <ClInclude Include="..\Include\pyatomic.h" />
     <ClInclude Include="..\Include\pybuffer.h" />
     <ClInclude Include="..\Include\pycapsule.h" />
     <ClInclude Include="..\Include\pyerrors.h" />
@@ -316,7 +346,6 @@
     <ClInclude Include="..\Include\symtable.h" />
     <ClInclude Include="..\Include\sysmodule.h" />
     <ClInclude Include="..\Include\traceback.h" />
-    <ClInclude Include="..\Include\tracemalloc.h" />
     <ClInclude Include="..\Include\tupleobject.h" />
     <ClInclude Include="..\Include\unicodeobject.h" />
     <ClInclude Include="..\Include\weakrefobject.h" />
@@ -341,13 +370,16 @@
     <ClInclude Include="..\Objects\stringlib\replace.h" />
     <ClInclude Include="..\Objects\stringlib\split.h" />
     <ClInclude Include="..\Objects\unicodetype_db.h" />
-    <ClInclude Include="..\Parser\tokenizer.h" />
+    <ClInclude Include="..\Parser\lexer\state.h" />
+    <ClInclude Include="..\Parser\lexer\lexer.h" />
+    <ClInclude Include="..\Parser\lexer\buffer.h" />
+    <ClInclude Include="..\Parser\tokenizer\helpers.h" />
+    <ClInclude Include="..\Parser\tokenizer\tokenizer.h" />
     <ClInclude Include="..\Parser\string_parser.h" />
     <ClInclude Include="..\Parser\pegen.h" />
     <ClInclude Include="..\PC\errmap.h" />
     <ClInclude Include="..\PC\pyconfig.h" />
     <ClInclude Include="..\Python\condvar.h" />
-    <ClInclude Include="..\Python\importdl.h" />
     <ClInclude Include="..\Python\stdlib_module_names.h" />
     <ClInclude Include="..\Python\thread_nt.h" />
   </ItemGroup>
@@ -377,7 +409,7 @@
     <ClCompile Include="..\Modules\_functoolsmodule.c" />
     <ClCompile Include="..\Modules\_hacl\Hacl_Hash_MD5.c" />
     <ClCompile Include="..\Modules\_hacl\Hacl_Hash_SHA1.c" />
-    <ClCompile Include="..\Modules\_hacl\Hacl_Streaming_SHA2.c" />
+    <ClCompile Include="..\Modules\_hacl\Hacl_Hash_SHA2.c" />
     <ClCompile Include="..\Modules\_hacl\Hacl_Hash_SHA3.c" />
     <ClCompile Include="..\Modules\_heapqmodule.c" />
     <ClCompile Include="..\Modules\_json.c" />
@@ -394,7 +426,6 @@
     <ClCompile Include="..\Modules\_weakref.c" />
     <ClCompile Include="..\Modules\arraymodule.c" />
     <ClCompile Include="..\Modules\atexitmodule.c" />
-    <ClCompile Include="..\Modules\audioop.c" />
     <ClCompile Include="..\Modules\binascii.c">
       <PreprocessorDefinitions>USE_ZLIB_CRC32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
@@ -419,6 +450,7 @@
     <ClCompile Include="..\Modules\signalmodule.c" />
     <ClCompile Include="..\Modules\_statisticsmodule.c" />
     <ClCompile Include="..\Modules\symtablemodule.c" />
+    <ClCompile Include="..\Modules\_sysconfig.c" />
     <ClCompile Include="..\Modules\_threadmodule.c" />
     <ClCompile Include="..\Modules\_tracemalloc.c" />
     <ClCompile Include="..\Modules\_typingmodule.c" />
@@ -481,12 +513,20 @@
     <ClCompile Include="..\Objects\structseq.c" />
     <ClCompile Include="..\Objects\tupleobject.c" />
     <ClCompile Include="..\Objects\typeobject.c" />
+    <ClCompile Include="..\Objects\typevarobject.c" />
     <ClCompile Include="..\Objects\unicodectype.c" />
     <ClCompile Include="..\Objects\unicodeobject.c" />
     <ClCompile Include="..\Objects\unionobject.c" />
     <ClCompile Include="..\Objects\weakrefobject.c" />
     <ClCompile Include="..\Parser\myreadline.c" />
-    <ClCompile Include="..\Parser\tokenizer.c" />
+    <ClCompile Include="..\Parser\lexer\state.c" />
+    <ClCompile Include="..\Parser\lexer\lexer.c" />
+    <ClCompile Include="..\Parser\lexer\buffer.c" />
+    <ClCompile Include="..\Parser\tokenizer\string_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\file_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c" />
+    <ClCompile Include="..\Parser\tokenizer\helpers.c" />
     <ClCompile Include="..\Parser\token.c" />
     <ClCompile Include="..\Parser\pegen.c" />
     <ClCompile Include="..\Parser\pegen_errors.c" />
@@ -511,6 +551,8 @@
     <ClCompile Include="..\Python\codecs.c" />
     <ClCompile Include="..\Python\compile.c" />
     <ClCompile Include="..\Python\context.c" />
+    <ClCompile Include="..\Python\critical_section.c" />
+    <ClCompile Include="..\Python\crossinterp.c" />
     <ClCompile Include="..\Python\dynamic_annotations.c" />
     <ClCompile Include="..\Python\dynload_win.c" />
     <ClCompile Include="..\Python\errors.c" />
@@ -535,10 +577,14 @@
     <ClCompile Include="..\Python\intrinsics.c" />
     <ClCompile Include="..\Python\instrumentation.c" />
     <ClCompile Include="..\Python\legacy_tracing.c" />
+    <ClCompile Include="..\Python\lock.c" />
     <ClCompile Include="..\Python\marshal.c" />
     <ClCompile Include="..\Python\modsupport.c" />
     <ClCompile Include="..\Python\mysnprintf.c" />
     <ClCompile Include="..\Python\mystrtoul.c" />
+    <ClCompile Include="..\Python\optimizer.c" />
+    <ClCompile Include="..\Python\optimizer_analysis.c" />
+    <ClCompile Include="..\Python\parking_lot.c" />
     <ClCompile Include="..\Python\pathconfig.c" />
     <ClCompile Include="..\Python\perf_trampoline.c" />
     <ClCompile Include="..\Python\preconfig.c" />
@@ -565,6 +611,7 @@
     </ClCompile>
     <ClCompile Include="..\Python\thread.c" />
     <ClCompile Include="..\Python\traceback.c" />
+    <ClCompile Include="..\Python\tracemalloc.c" />
   </ItemGroup>
   <ItemGroup>
     <!-- BEGIN deepfreeze -->
diff --git a/PCbuild/pythoncore.vcxproj.filters b/PCbuild/pythoncore.vcxproj.filters
index 75e6fbb13f98ba..c9b34c64fbf75f 100644
--- a/PCbuild/pythoncore.vcxproj.filters
+++ b/PCbuild/pythoncore.vcxproj.filters
@@ -4,6 +4,9 @@
     <Filter Include="Include">
       <UniqueIdentifier>{086b0afb-270c-4603-a02a-63d46f0b2b92}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Include\internal\mimalloc">
+      <UniqueIdentifier>{1dc8d8bd-d493-478e-9b7a-7eb108bb8bd5}</UniqueIdentifier>
+    </Filter>
     <Filter Include="Modules">
       <UniqueIdentifier>{8e81609f-13ca-4eae-9fdb-f8af20c710c7}</UniqueIdentifier>
     </Filter>
@@ -19,6 +22,9 @@
     <Filter Include="Objects">
       <UniqueIdentifier>{ab29a558-143d-4fe7-a039-b431fb429856}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Objects\mimalloc">
+      <UniqueIdentifier>{ad449c55-23cb-44f8-ada4-04b23c9ec388}</UniqueIdentifier>
+    </Filter>
     <Filter Include="Parser">
       <UniqueIdentifier>{97349fee-0abf-48b0-a8f5-771bf39b8aee}</UniqueIdentifier>
     </Filter>
@@ -144,6 +150,9 @@
     <ClInclude Include="..\Include\py_curses.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\pyatomic.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\pybuffer.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -219,9 +228,6 @@
     <ClInclude Include="..\Include\traceback.h">
       <Filter>Include</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\tracemalloc.h">
-      <Filter>Include</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\tupleobject.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -291,7 +297,19 @@
     <ClInclude Include="..\Objects\unicodetype_db.h">
       <Filter>Objects</Filter>
     </ClInclude>
-    <ClInclude Include="..\Parser\tokenizer.h">
+    <ClInclude Include="..\Parser\lexer\lexer.h">
+      <Filter>Parser</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Parser\lexer\state.h">
+      <Filter>Parser</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Parser\lexer\buffer.h">
+      <Filter>Parser</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Parser\tokenizer\tokenizer.h">
+      <Filter>Parser</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Parser\tokenizer\helpers.h">
       <Filter>Parser</Filter>
     </ClInclude>
     <ClInclude Include="..\PC\errmap.h">
@@ -300,9 +318,6 @@
     <ClInclude Include="..\PC\pyconfig.h">
       <Filter>PC</Filter>
     </ClInclude>
-    <ClInclude Include="..\Python\importdl.h">
-      <Filter>Python</Filter>
-    </ClInclude>
     <ClInclude Include="..\Python\stdlib_module_names.h">
       <Filter>Python</Filter>
     </ClInclude>
@@ -315,6 +330,9 @@
     <ClInclude Include="..\Include\pyhash.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\interpreteridobject.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Modules\hashtable.h">
       <Filter>Modules</Filter>
     </ClInclude>
@@ -390,6 +408,9 @@
     <ClInclude Include="..\Include\cpython\odictobject.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\optimizer.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\unicodeobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -402,9 +423,6 @@
     <ClInclude Include="..\Include\cpython\methodobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\cpython\modsupport.h">
-      <Filter>Include\cpython</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\cpython\objimpl.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -420,6 +438,18 @@
     <ClInclude Include="..\Include\cpython\pyarena.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\pyatomic.h">
+      <Filter>Include</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\cpython\pyatomic_gcc.h">
+      <Filter>Include</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\cpython\pyatomic_msc.h">
+      <Filter>Include</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\cpython\pyatomic_std.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\pyctype.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -438,10 +468,10 @@
     <ClInclude Include="..\Include\cpython\pyframe.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\cpython\pylifecycle.h">
+    <ClInclude Include="..\Include\cpython\pyhash.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\cpython\pytime.h">
+    <ClInclude Include="..\Include\cpython\pylifecycle.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
     <ClInclude Include="..\Include\cpython\tupleobject.h">
@@ -450,6 +480,9 @@
     <ClInclude Include="..\Include\cpython\traceback.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\tracemalloc.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\frameobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -459,6 +492,9 @@
     <ClInclude Include="..\Include\cpython\genobject.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\interpreteridobject.h">
+      <Filter>Include\cpython</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\pythonrun.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -474,6 +510,9 @@
     <ClInclude Include="..\Include\cpython\pystate.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\pystats.h">
+      <Filter>Include\cpython</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\initconfig.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -486,6 +525,9 @@
     <ClInclude Include="..\Include\internal\pycore_warnings.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_weakref.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_abstract.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -501,12 +543,6 @@
     <ClInclude Include="..\Include\internal\pycore_atexit.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\internal\pycore_atomic.h">
-      <Filter>Include\internal</Filter>
-    </ClInclude>
-    <ClInclude Include="..\Include\internal\pycore_atomic_funcs.h">
-      <Filter>Include</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_bitutils.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -519,6 +555,9 @@
     <ClInclude Include="..\Include\internal\pycore_call.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_capsule.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_ceval.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -528,15 +567,27 @@
     <ClInclude Include="..\Include\internal\pycore_code.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_codecs.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_compile.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_complexobject.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_condvar.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_context.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_critical_section.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_crossinterp.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_descrobject.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -594,27 +645,39 @@
     <ClInclude Include="..\Include\internal\pycore_hashtable.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_identifier.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_import.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_importdl.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_initconfig.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_interp.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\internal\pycore_interpreteridobject.h">
-      <Filter>Include\cpython</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_intrinsics.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_list.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_llist.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_lock.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_long.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_modsupport.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_moduleobject.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -633,6 +696,12 @@
     <ClInclude Include="..\Include\internal\pycore_obmalloc_init.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_optimizer.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_parking_lot.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_pathconfig.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -657,6 +726,12 @@
     <ClInclude Include="..\Include\internal\pycore_pystate.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_pystats.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_pythonrun.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_pythread.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -672,6 +747,12 @@
     <ClInclude Include="..\Include\internal\pycore_runtime_init_generated.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_semaphore.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_setobject.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_signal.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
@@ -699,18 +780,45 @@
     <ClInclude Include="..\Include\internal\pycore_tracemalloc.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_tstate.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_tuple.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_typeobject.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_typevarobject.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_ucnhash.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_unionobject.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_uops.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc.h">
+      <Filter>Include\internal\mimalloc</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\atomic.h">
+      <Filter>Include\internal\mimalloc</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\internal.h">
+      <Filter>Include\internal\mimalloc</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\prim.h">
+      <Filter>Include\internal\mimalloc</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\track.h">
+      <Filter>Include\internal\mimalloc</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Include\internal\mimalloc\mimalloc\types.h">
+      <Filter>Include\internal\mimalloc</Filter>
+    </ClInclude>
     <ClInclude Include="$(zlibDir)\crc32.h">
       <Filter>Modules\zlib</Filter>
     </ClInclude>
@@ -779,7 +887,7 @@
     <ClCompile Include="..\Modules\_hacl\Hacl_Hash_SHA1.c">
       <Filter>Modules</Filter>
     </ClCompile>
-    <ClCompile Include="..\Modules\_hacl\Hacl_Streaming_SHA2.c">
+    <ClCompile Include="..\Modules\_hacl\Hacl_Hash_SHA2.c">
       <Filter>Modules</Filter>
     </ClCompile>
     <ClCompile Include="..\Modules\_hacl\Hacl_Hash_SHA3.c">
@@ -833,9 +941,6 @@
     <ClCompile Include="..\Modules\atexitmodule.c">
       <Filter>Modules</Filter>
     </ClCompile>
-    <ClCompile Include="..\Modules\audioop.c">
-      <Filter>Modules</Filter>
-    </ClCompile>
     <ClCompile Include="..\Modules\binascii.c">
       <Filter>Modules</Filter>
     </ClCompile>
@@ -896,6 +1001,9 @@
     <ClCompile Include="..\Modules\symtablemodule.c">
       <Filter>Modules</Filter>
     </ClCompile>
+    <ClCompile Include="..\Modules\_sysconfig.c">
+      <Filter>Modules</Filter>
+    </ClCompile>
     <ClCompile Include="..\Modules\_threadmodule.c">
       <Filter>Modules</Filter>
     </ClCompile>
@@ -1073,7 +1181,28 @@
     <ClCompile Include="..\Parser\myreadline.c">
       <Filter>Parser</Filter>
     </ClCompile>
-    <ClCompile Include="..\Parser\tokenizer.c">
+    <ClCompile Include="..\Parser\lexer\lexer.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\lexer\state.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\lexer\buffer.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\string_tokenizer.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\file_tokenizer.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\utf8_tokenizer.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\readline_tokenizer.c">
+      <Filter>Parser</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Parser\tokenizer\helpers.c">
       <Filter>Parser</Filter>
     </ClCompile>
     <ClCompile Include="..\Parser\token.c">
@@ -1121,6 +1250,12 @@
     <ClCompile Include="..\Python\compile.c">
       <Filter>Python</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\critical_section.c">
+      <Filter>Python</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Python\crossinterp.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Python\dynamic_annotations.c">
       <Filter>Python</Filter>
     </ClCompile>
@@ -1187,6 +1322,9 @@
     <ClCompile Include="..\Python\legacy_tracing.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\lock.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\Python\marshal.c">
       <Filter>Python</Filter>
     </ClCompile>
@@ -1199,6 +1337,15 @@
     <ClCompile Include="..\Python\mystrtoul.c">
       <Filter>Python</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\optimizer.c">
+      <Filter>Python</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Python\optimizer_analysis.c">
+      <Filter>Python</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Python\parking_lot.c">
+      <Filter>Python</Filter>
+    </ClCompile>
     <ClCompile Include="..\Python\pathconfig.c">
       <Filter>Python</Filter>
     </ClCompile>
@@ -1265,6 +1412,9 @@
     <ClCompile Include="..\Python\traceback.c">
       <Filter>Python</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\tracemalloc.c">
+      <Filter>Python</Filter>
+    </ClCompile>
     <ClCompile Include="..\Python\bootstrap_hash.c">
       <Filter>Python</Filter>
     </ClCompile>
@@ -1364,6 +1514,9 @@
     <ClCompile Include="..\Objects\genericaliasobject.c">
       <Filter>Objects</Filter>
     </ClCompile>
+    <ClCompile Include="..\Objects\typevarobject.c">
+      <Filter>Objects</Filter>
+    </ClCompile>
     <ClCompile Include="..\Objects\unionobject.c">
       <Filter>Objects</Filter>
     </ClCompile>
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 9df56685b76a87..175ce918ac20f6 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -138,12 +138,13 @@ _zoneinfo
 _decimal
 _elementtree
 _hashlib
-_msi
 _multiprocessing
 _overlapped
 _socket
 _testbuffer
 _testcapi
+_testclinic
+_testclinic_limited
 _testconsole
 _testimportmultiple
 _testmultiphase
@@ -169,7 +170,7 @@ _lzma
     Homepage:
         https://tukaani.org/xz/
 _ssl
-    Python wrapper for version 1.1.1t of the OpenSSL secure sockets
+    Python wrapper for version 3.0 of the OpenSSL secure sockets
     library, which is downloaded from our binaries repository at
     https://github.com/python/cpython-bin-deps.
 
@@ -188,7 +189,7 @@ _ssl
     again when building.
 
 _sqlite3
-    Wraps SQLite 3.41.2, which is itself built by sqlite3.vcxproj
+    Wraps SQLite 3.43.1, which is itself built by sqlite3.vcxproj
     Homepage:
         https://www.sqlite.org/
 _tkinter
@@ -251,9 +252,11 @@ against a profiling library and contain extra debug information. The
 PGUpdate configuration takes the profiling data and generates optimized
 binaries.
 
-The build_pgo.bat script automates the creation of optimized binaries.
-It creates the PGI files, runs the unit test suite or PyBench with the
-PGI python, and finally creates the optimized files.
+The build.bat script has an argument `--pgo` that automate the creation
+of optimized binaries.
+It creates the PGI files, runs the unit test suite with the PGI python,
+and finally creates the optimized files.
+You can customize the job for profiling with `--pgo-job <job>` option.
 
 See
     https://docs.microsoft.com/en-us/cpp/build/profile-guided-optimizations
@@ -283,10 +286,38 @@ The property files used are:
  * python (versions, directories and build names)
  * pyproject (base settings for all projects)
  * openssl (used by projects dependent upon OpenSSL)
- * tcltk (used by _tkinter, tcl, tk and tix projects)
+ * tcltk (used by _tkinter, tcl, and tk projects)
 
 The pyproject property file defines all of the build settings for each
 project, with some projects overriding certain specific values. The GUI
 doesn't always reflect the correct settings and may confuse the user
 with false information, especially for settings that automatically adapt
 for different configurations.
+
+Add a new project
+-----------------
+
+For example, add a new _testclinic_limited project to build a new
+_testclinic_limited extension, the file Modules/_testclinic_limited.c:
+
+* In PCbuild/, copy _testclinic.vcxproj to _testclinic_limited.vcxproj,
+  replace RootNamespace value with `_testclinic_limited`, replace
+  `_asyncio.c` with `_testclinic_limited.c`.
+* Open Visual Studio, open PCbuild\pcbuild.sln solution, add the
+  PCbuild\_testclinic_limited.vcxproj project to the solution ("add existing
+  project).
+* Add a dependency on the python project to the new _testclinic_limited
+  project.
+* Save and exit Visual Studio.
+* Add `;_testclinic_limited` to `<TestModules Include="...">` in
+  PCbuild\pcbuild.proj.
+* Update "exts" in Tools\msi\lib\lib_files.wxs file or in
+  Tools\msi\test\test_files.wxs file (for tests).
+* PC\layout\main.py needs updating if you add a test-only extension whose name
+  doesn't start with "_test".
+* Add the extension to PCbuild\readme.txt (this file).
+* Build Python from scratch (clean the solution) to check that the new project
+  is built successfully.
+* Ensure the new .vcxproj and .vcxproj.filters files are added to your commit,
+  as well as the changes to pcbuild.sln, pcbuild.proj and any other modified
+  files.
diff --git a/PCbuild/regen.targets b/PCbuild/regen.targets
index 107066817ba6b0..cc9469c7ddd726 100644
--- a/PCbuild/regen.targets
+++ b/PCbuild/regen.targets
@@ -13,8 +13,6 @@
     <_ASTOutputs Include="$(PySourcePath)Python\Python-ast.c">
       <Argument>-C</Argument>
     </_ASTOutputs>
-    <_OpcodeSources Include="$(PySourcePath)Tools\build\generate_opcode_h.py;$(PySourcePath)Lib\opcode.py" />
-    <_OpcodeOutputs Include="$(PySourcePath)Include\opcode.h;$(PySourcePath)Include\internal\pycore_opcode.h;$(PySourcePath)Python\opcode_targets.h" />
     <_TokenSources Include="$(PySourcePath)Grammar\Tokens" />
     <_TokenOutputs Include="$(PySourcePath)Doc\library\token-list.inc">
       <Format>rst</Format>
@@ -34,7 +32,7 @@
 
   <Target Name="_TouchRegenSources" Condition="$(ForceRegen) == 'true'">
     <Message Text="Touching source files to force regeneration" Importance="high" />
-    <Touch Files="@(_PegenSources);@(_ASTSources);@(_OpcodeSources);@(_TokenSources);@(_KeywordOutputs)"
+    <Touch Files="@(_PegenSources);@(_ASTSources);@(_TokenSources);@(_KeywordOutputs)"
            AlwaysCreate="False" />
   </Target>
 
@@ -55,16 +53,6 @@
           WorkingDirectory="$(PySourcePath)" />
   </Target>
 
-  <Target Name="_RegenOpcodes"
-          Inputs="@(_OpcodeSources)" Outputs="@(_OpcodeOutputs)"
-          DependsOnTargets="FindPythonForBuild">
-    <Message Text="Regenerate @(_OpcodeOutputs->'%(Filename)%(Extension)',' ')" Importance="high" />
-    <Exec Command="$(PythonForBuild) Tools\build\generate_opcode_h.py Lib\opcode.py Include\opcode.h Include\internal\pycore_opcode.h Include\internal\pycore_intrinsics.h"
-          WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) Python\makeopcodetargets.py Python\opcode_targets.h"
-          WorkingDirectory="$(PySourcePath)" />
-  </Target>
-
   <Target Name="_RegenTokens"
           Inputs="@(_TokenSources)" Outputs="@(_TokenOutputs)"
           DependsOnTargets="FindPythonForBuild">
@@ -91,7 +79,7 @@
 
   <Target Name="Regen"
           Condition="$(Configuration) != 'PGUpdate'"
-          DependsOnTargets="_TouchRegenSources;_RegenPegen;_RegenAST_H;_RegenOpcodes;_RegenTokens;_RegenKeywords;_RegenGlobalObjects">
+          DependsOnTargets="_TouchRegenSources;_RegenPegen;_RegenAST_H;_RegenTokens;_RegenKeywords;_RegenGlobalObjects">
     <Message Text="Generated sources are up to date" Importance="high" />
   </Target>
 
@@ -104,11 +92,11 @@
     <_LicenseSources Include="$(PySourcePath)LICENSE;
                               $(PySourcePath)PC\crtlicense.txt;
                               $(bz2Dir)LICENSE;
-                              $(opensslOutDir)LICENSE;
                               $(libffiDir)LICENSE;" />
+    <_LicenseSources Include="$(opensslOutDir)LICENSE.txt" Condition="Exists('$(opensslOutDir)LICENSE.txt')" />
+    <_LicenseSources Include="$(opensslOutDir)LICENSE" Condition="!Exists('$(opensslOutDir)LICENSE.txt')" />
     <_LicenseSources Include="$(tcltkDir)tcllicense.terms;
-                              $(tcltkDir)tklicense.terms;
-                              $(tcltkDir)tixlicense.terms" Condition="$(IncludeTkinter)" />
+                              $(tcltkDir)tklicense.terms" Condition="$(IncludeTkinter)" />
   </ItemGroup>
 
   <Target Name="_RegenTestFrozenmain" Inputs="@(_TestFrozenSources)" Outputs="@(_TestFrozenOutputs)"
diff --git a/PCbuild/rt.bat b/PCbuild/rt.bat
index 29813c5a87fca7..332ba5edcf4082 100644
--- a/PCbuild/rt.bat
+++ b/PCbuild/rt.bat
@@ -32,7 +32,7 @@ set pcbuild=%~dp0
 set suffix=
 set qmode=
 set dashO=
-set regrtestargs=
+set regrtestargs=--fast-ci
 set exe=
 
 :CheckOpts
@@ -48,7 +48,7 @@ if NOT "%1"=="" (set regrtestargs=%regrtestargs% %1) & shift & goto CheckOpts
 
 if not defined prefix set prefix=%pcbuild%amd64
 set exe=%prefix%\python%suffix%.exe
-set cmd="%exe%" %dashO% -u -Wd -E -bb -m test %regrtestargs%
+set cmd="%exe%" %dashO% -m test %regrtestargs%
 if defined qmode goto Qmode
 
 echo Deleting .pyc files ...
diff --git a/PCbuild/tcltk.props b/PCbuild/tcltk.props
index 9d5189b3b8e93d..96dd289face6a5 100644
--- a/PCbuild/tcltk.props
+++ b/PCbuild/tcltk.props
@@ -4,7 +4,6 @@
   <PropertyGroup>
     <TclVersion Condition="$(TclVersion) == ''">8.6.13.0</TclVersion>
     <TkVersion Condition="$(TkVersion) == ''">$(TclVersion)</TkVersion>
-    <TixVersion Condition="$(TixVersion) == ''">8.4.3.6</TixVersion>
     <TclMajorVersion>$([System.Version]::Parse($(TclVersion)).Major)</TclMajorVersion>
     <TclMinorVersion>$([System.Version]::Parse($(TclVersion)).Minor)</TclMinorVersion>
     <TclPatchLevel>$([System.Version]::Parse($(TclVersion)).Build)</TclPatchLevel>
@@ -13,13 +12,8 @@
     <TkMinorVersion>$([System.Version]::Parse($(TkVersion)).Minor)</TkMinorVersion>
     <TkPatchLevel>$([System.Version]::Parse($(TkVersion)).Build)</TkPatchLevel>
     <TkRevision>$([System.Version]::Parse($(TkVersion)).Revision)</TkRevision>
-    <TixMajorVersion>$([System.Version]::Parse($(TixVersion)).Major)</TixMajorVersion>
-    <TixMinorVersion>$([System.Version]::Parse($(TixVersion)).Minor)</TixMinorVersion>
-    <TixPatchLevel>$([System.Version]::Parse($(TixVersion)).Build)</TixPatchLevel>
-    <TixRevision>$([System.Version]::Parse($(TixVersion)).Revision)</TixRevision>
     <tclDir Condition="$(tclDir) == ''">$(ExternalsDir)tcl-core-$(TclVersion)\</tclDir>
     <tkDir Condition="$(tkDir) == ''">$(ExternalsDir)tk-$(TkVersion)\</tkDir>
-    <tixDir Condition="$(tixDir) == ''">$(ExternalsDir)tix-$(TixVersion)\</tixDir>
     <tcltkDir Condition="$(tcltkDir) == ''">$(ExternalsDir)tcltk-$(TclVersion)\$(ArchName)\</tcltkDir>
     <tclWin32Exe Condition="$(Platform) == 'Win32'">$(tcltkDir)\bin\tclsh$(TclMajorVersion)$(TclMinorVersion)t.exe</tclWin32Exe>
     <tclWin32Exe Condition="$(Platform) != 'Win32'">$(tcltkDir)\..\win32\bin\tclsh$(TclMajorVersion)$(TclMinorVersion)t.exe</tclWin32Exe>
@@ -31,8 +25,6 @@
     <tkDLLName>tk$(TkMajorVersion)$(TkMinorVersion)t$(TclDebugExt).dll</tkDLLName>
     <tkLibName>tk$(TkMajorVersion)$(TkMinorVersion)t$(TclDebugExt).lib</tkLibName>
     <tclZlibDLLName>zlib1.dll</tclZlibDLLName>
-    <tixDLLName>tix$(TixMajorVersion)$(TixMinorVersion)$(TclDebugExt).dll</tixDLLName>
-    <tixDLLPath>$(tcltkDir)lib\tix$(TixMajorVersion).$(TixMinorVersion).$(TixPatchLevel)\$(tixDLLName)</tixDLLPath>
     <tcltkLib>$(tcltkDir)lib\tcl$(TclMajorVersion)$(TclMinorVersion)t$(TclDebugExt).lib;$(tcltkDir)lib\tk$(TkMajorVersion)$(TkMinorVersion)t$(TclDebugExt).lib</tcltkLib>
     <TclMachine>IX86</TclMachine>
     <TclMachine Condition="'$(Platform)' == 'x64'">AMD64</TclMachine>
diff --git a/PCbuild/tix.vcxproj b/PCbuild/tix.vcxproj
deleted file mode 100644
index 48abcd27c87759..00000000000000
--- a/PCbuild/tix.vcxproj
+++ /dev/null
@@ -1,101 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGInstrument|Win32">
-      <Configuration>PGInstrument</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGInstrument|x64">
-      <Configuration>PGInstrument</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGUpdate|Win32">
-      <Configuration>PGUpdate</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="PGUpdate|x64">
-      <Configuration>PGUpdate</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|ARM64">
-      <Configuration>Release</Configuration>
-      <Platform>ARM64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{C5A3E7FB-9695-4B2E-960B-1D9F43F1E555}</ProjectGuid>
-    <RootNamespace>tix</RootNamespace>
-    <SupportSigning>true</SupportSigning>
-  </PropertyGroup>
-
-  <Import Project="python.props" />
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <Import Project="tcltk.props" />
-  
-  <PropertyGroup Label="Configuration">
-    <ConfigurationType>Makefile</ConfigurationType>
-    <OutDir>$(tcltkDir)</OutDir>
-    <TargetPath>$(tixDLLPath)</TargetPath>
-  </PropertyGroup>
-  
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  
-  <PropertyGroup>
-    <TixDirs>BUILDDIRTOP="$(BuildDirTop)" TCL_DIR="$(tclDir.TrimEnd(`\`))" TK_DIR="$(tkDir.TrimEnd(`\`))" INSTALL_DIR="$(OutDir.TrimEnd(`\`))" TCLSH_EXE="$(tclWin32Exe)"</TixDirs>
-    <DebugFlags Condition="'$(Configuration)' == 'Debug'">DEBUG=1 NODEBUG=0 TCL_DBGX=g TK_DBGX=g</DebugFlags>
-    <DebugFlags Condition="'$(Configuration)' != 'Debug'">DEBUG=0 NODEBUG=1</DebugFlags>
-    <CFlags>-c -W3 -nologo -MD -wd4028 -wd4090 -wd4244 -wd4267 -wd4312</CFlags>
-    <NMakeBuildCommandLine>setlocal
-set VCINSTALLDIR=$(VCInstallDir)
-cd /D "$(tixDir)win"
-nmake /nologo -f makefile.vc MACHINE=$(TclMachine) cflags="$(CFlags)" $(DebugFlags) $(TclShortVersions) $(TixDirs) all install
-copy /Y ..\license.terms "$(OutDir)\tixlicense.terms"
-</NMakeBuildCommandLine>
-    <NMakeCleanCommandLine>rmdir /q/s "$(OutDir.TrimEnd(`\`))"</NMakeCleanCommandLine>
-  </PropertyGroup>
-  
-  <Target Name="SignFiles" AfterTargets="Build" Condition="$(_SignCommand) != ''">
-    <ItemGroup>
-      <FilesToSign Include="$(OutDir)\bin\*.exe" />
-      <FilesToSign Include="$(OutDir)\bin\*.dll" />
-    </ItemGroup>
-    <Exec Command="$(_SignCommand) &quot;%(FilesToSign.FullPath)&quot;" ContinueOnError="true" />
-  </Target>
-
-  <ItemGroup>
-    <ProjectReference Include="tcl.vcxproj">
-      <Project>{b5fd6f1d-129e-4bff-9340-03606fac7283}</Project>
-      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
-    </ProjectReference>
-    <ProjectReference Include="tk.vcxproj">
-      <Project>{7e85eccf-a72c-4da4-9e52-884508e80ba1}</Project>
-      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
-    </ProjectReference>
-  </ItemGroup>
-
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-
-  <Target Name="Clean" />
-  <Target Name="CleanAll">
-    <RemoveDir Directories="$(OutDir)" />
-    <RemoveDir Directories="$(IntDir)" />
-  </Target>
-  
-  <Target Name="ResolveAssemblyReferences" />
-</Project>
\ No newline at end of file
diff --git a/Parser/Python.asdl b/Parser/Python.asdl
index e9423a7c984f21..0d154867276c36 100644
--- a/Parser/Python.asdl
+++ b/Parser/Python.asdl
@@ -10,20 +10,22 @@ module Python
 
     stmt = FunctionDef(identifier name, arguments args,
                        stmt* body, expr* decorator_list, expr? returns,
-                       string? type_comment)
+                       string? type_comment, type_param* type_params)
           | AsyncFunctionDef(identifier name, arguments args,
                              stmt* body, expr* decorator_list, expr? returns,
-                             string? type_comment)
+                             string? type_comment, type_param* type_params)
 
           | ClassDef(identifier name,
              expr* bases,
              keyword* keywords,
              stmt* body,
-             expr* decorator_list)
+             expr* decorator_list,
+             type_param* type_params)
           | Return(expr? value)
 
           | Delete(expr* targets)
           | Assign(expr* targets, expr value, string? type_comment)
+          | TypeAlias(expr name, type_param* type_params, expr value)
           | AugAssign(expr target, operator op, expr value)
           -- 'simple' indicates that we annotate simple name without parens
           | AnnAssign(expr target, expr annotation, expr? value, int simple)
@@ -142,4 +144,9 @@ module Python
              attributes (int lineno, int col_offset, int end_lineno, int end_col_offset)
 
     type_ignore = TypeIgnore(int lineno, string tag)
+
+    type_param = TypeVar(identifier name, expr? bound)
+               | ParamSpec(identifier name)
+               | TypeVarTuple(identifier name)
+               attributes (int lineno, int col_offset, int end_lineno, int end_col_offset)
 }
diff --git a/Parser/action_helpers.c b/Parser/action_helpers.c
index 0aaaed64c4037c..3f6c282ffa7a68 100644
--- a/Parser/action_helpers.c
+++ b/Parser/action_helpers.c
@@ -1,7 +1,6 @@
 #include <Python.h>
 
 #include "pegen.h"
-#include "tokenizer.h"
 #include "string_parser.h"
 #include "pycore_runtime.h"         // _PyRuntime
 
@@ -119,44 +118,8 @@ expr_ty
 _PyPegen_join_names_with_dot(Parser *p, expr_ty first_name, expr_ty second_name)
 {
     assert(first_name != NULL && second_name != NULL);
-    PyObject *first_identifier = first_name->v.Name.id;
-    PyObject *second_identifier = second_name->v.Name.id;
-
-    if (PyUnicode_READY(first_identifier) == -1) {
-        return NULL;
-    }
-    if (PyUnicode_READY(second_identifier) == -1) {
-        return NULL;
-    }
-    const char *first_str = PyUnicode_AsUTF8(first_identifier);
-    if (!first_str) {
-        return NULL;
-    }
-    const char *second_str = PyUnicode_AsUTF8(second_identifier);
-    if (!second_str) {
-        return NULL;
-    }
-    Py_ssize_t len = strlen(first_str) + strlen(second_str) + 1;  // +1 for the dot
-
-    PyObject *str = PyBytes_FromStringAndSize(NULL, len);
-    if (!str) {
-        return NULL;
-    }
-
-    char *s = PyBytes_AS_STRING(str);
-    if (!s) {
-        return NULL;
-    }
-
-    strcpy(s, first_str);
-    s += strlen(first_str);
-    *s++ = '.';
-    strcpy(s, second_str);
-    s += strlen(second_str);
-    *s = '\0';
-
-    PyObject *uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), PyBytes_GET_SIZE(str), NULL);
-    Py_DECREF(str);
+    PyObject *uni = PyUnicode_FromFormat("%U.%U",
+            first_name->v.Name.id, second_name->v.Name.id);
     if (!uni) {
         return NULL;
     }
@@ -752,20 +715,25 @@ _PyPegen_function_def_decorators(Parser *p, asdl_expr_seq *decorators, stmt_ty f
     assert(function_def != NULL);
     if (function_def->kind == AsyncFunctionDef_kind) {
         return _PyAST_AsyncFunctionDef(
-            function_def->v.FunctionDef.name, function_def->v.FunctionDef.args,
-            function_def->v.FunctionDef.body, decorators, function_def->v.FunctionDef.returns,
-            function_def->v.FunctionDef.type_comment, function_def->lineno,
-            function_def->col_offset, function_def->end_lineno, function_def->end_col_offset,
-            p->arena);
+            function_def->v.AsyncFunctionDef.name,
+            function_def->v.AsyncFunctionDef.args,
+            function_def->v.AsyncFunctionDef.body, decorators,
+            function_def->v.AsyncFunctionDef.returns,
+            function_def->v.AsyncFunctionDef.type_comment,
+            function_def->v.AsyncFunctionDef.type_params,
+            function_def->lineno, function_def->col_offset,
+            function_def->end_lineno, function_def->end_col_offset, p->arena);
     }
 
     return _PyAST_FunctionDef(
-        function_def->v.FunctionDef.name, function_def->v.FunctionDef.args,
+        function_def->v.FunctionDef.name,
+        function_def->v.FunctionDef.args,
         function_def->v.FunctionDef.body, decorators,
         function_def->v.FunctionDef.returns,
-        function_def->v.FunctionDef.type_comment, function_def->lineno,
-        function_def->col_offset, function_def->end_lineno,
-        function_def->end_col_offset, p->arena);
+        function_def->v.FunctionDef.type_comment,
+        function_def->v.FunctionDef.type_params,
+        function_def->lineno, function_def->col_offset,
+        function_def->end_lineno, function_def->end_col_offset, p->arena);
 }
 
 /* Construct a ClassDef equivalent to class_def, but with decorators */
@@ -774,8 +742,10 @@ _PyPegen_class_def_decorators(Parser *p, asdl_expr_seq *decorators, stmt_ty clas
 {
     assert(class_def != NULL);
     return _PyAST_ClassDef(
-        class_def->v.ClassDef.name, class_def->v.ClassDef.bases,
-        class_def->v.ClassDef.keywords, class_def->v.ClassDef.body, decorators,
+        class_def->v.ClassDef.name,
+        class_def->v.ClassDef.bases, class_def->v.ClassDef.keywords,
+        class_def->v.ClassDef.body, decorators,
+        class_def->v.ClassDef.type_params,
         class_def->lineno, class_def->col_offset, class_def->end_lineno,
         class_def->end_col_offset, p->arena);
 }
@@ -996,7 +966,39 @@ _PyPegen_setup_full_format_spec(Parser *p, Token *colon, asdl_expr_seq *spec, in
     if (!spec) {
         return NULL;
     }
-    expr_ty res = _PyAST_JoinedStr(spec, lineno, col_offset, end_lineno, end_col_offset, p->arena);
+
+    // This is needed to keep compatibility with 3.11, where an empty format
+    // spec is parsed as an *empty* JoinedStr node, instead of having an empty
+    // constant in it.
+    Py_ssize_t n_items = asdl_seq_LEN(spec);
+    Py_ssize_t non_empty_count = 0;
+    for (Py_ssize_t i = 0; i < n_items; i++) {
+        expr_ty item = asdl_seq_GET(spec, i);
+        non_empty_count += !(item->kind == Constant_kind &&
+                             PyUnicode_CheckExact(item->v.Constant.value) &&
+                             PyUnicode_GET_LENGTH(item->v.Constant.value) == 0);
+    }
+    if (non_empty_count != n_items) {
+        asdl_expr_seq *resized_spec =
+            _Py_asdl_expr_seq_new(non_empty_count, p->arena);
+        if (resized_spec == NULL) {
+            return NULL;
+        }
+        Py_ssize_t j = 0;
+        for (Py_ssize_t i = 0; i < n_items; i++) {
+            expr_ty item = asdl_seq_GET(spec, i);
+            if (item->kind == Constant_kind &&
+                PyUnicode_CheckExact(item->v.Constant.value) &&
+                PyUnicode_GET_LENGTH(item->v.Constant.value) == 0) {
+                continue;
+            }
+            asdl_seq_SET(resized_spec, j++, item);
+        }
+        assert(j == non_empty_count);
+        spec = resized_spec;
+    }
+    expr_ty res = _PyAST_JoinedStr(spec, lineno, col_offset, end_lineno,
+                                   end_col_offset, p->arena);
     if (!res) {
         return NULL;
     }
@@ -1224,7 +1226,7 @@ _PyPegen_nonparen_genexp_in_call(Parser *p, expr_ty args, asdl_comprehension_seq
 // Fstring stuff
 
 static expr_ty
-_PyPegen_decode_fstring_part(Parser* p, int is_raw, expr_ty constant) {
+_PyPegen_decode_fstring_part(Parser* p, int is_raw, expr_ty constant, Token* token) {
     assert(PyUnicode_CheckExact(constant->v.Constant.value));
 
     const char* bstr = PyUnicode_AsUTF8(constant->v.Constant.value);
@@ -1240,7 +1242,7 @@ _PyPegen_decode_fstring_part(Parser* p, int is_raw, expr_ty constant) {
     }
 
     is_raw = is_raw || strchr(bstr, '\\') == NULL;
-    PyObject *str = _PyPegen_decode_string(p, is_raw, bstr, len, NULL);
+    PyObject *str = _PyPegen_decode_string(p, is_raw, bstr, len, token);
     if (str == NULL) {
         _Pypegen_raise_decode_error(p);
         return NULL;
@@ -1314,7 +1316,7 @@ _PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* raw_expressions, Token*b
     for (Py_ssize_t i = 0; i < n_items; i++) {
         expr_ty item = asdl_seq_GET(expr, i);
         if (item->kind == Constant_kind) {
-            item = _PyPegen_decode_fstring_part(p, is_raw, item);
+            item = _PyPegen_decode_fstring_part(p, is_raw, item, b);
             if (item == NULL) {
                 return NULL;
             }
@@ -1349,6 +1351,25 @@ _PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* raw_expressions, Token*b
                             p->arena);
 }
 
+expr_ty _PyPegen_decoded_constant_from_token(Parser* p, Token* tok) {
+    Py_ssize_t bsize;
+    char* bstr;
+    if (PyBytes_AsStringAndSize(tok->bytes, &bstr, &bsize) == -1) {
+        return NULL;
+    }
+    PyObject* str = _PyPegen_decode_string(p, 0, bstr, bsize, tok);
+    if (str == NULL) {
+        return NULL;
+    }
+    if (_PyArena_AddPyObject(p->arena, str) < 0) {
+        Py_DECREF(str);
+        return NULL;
+    }
+    return _PyAST_Constant(str, NULL, tok->lineno, tok->col_offset,
+                           tok->end_lineno, tok->end_col_offset,
+                           p->arena);
+}
+
 expr_ty _PyPegen_constant_from_token(Parser* p, Token* tok) {
     char* bstr = PyBytes_AsString(tok->bytes);
     if (bstr == NULL) {
diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index 5d5a05a70ca7ec..c9bf08ed2e0f6d 100755
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -518,7 +518,7 @@ def sumTrailer(self, name, add_label=False):
         if add_label:
             self.emit("failed:", 1)
             self.emit("Py_XDECREF(tmp);", 1)
-        self.emit("return 1;", 1)
+        self.emit("return -1;", 1)
         self.emit("}", 0)
         self.emit("", 0)
 
@@ -529,7 +529,7 @@ def simpleSum(self, sum, name):
                     "state->%s_type);")
             self.emit(line % (t.name,), 1)
             self.emit("if (isinstance == -1) {", 1)
-            self.emit("return 1;", 2)
+            self.emit("return -1;", 2)
             self.emit("}", 1)
             self.emit("if (isinstance) {", 1)
             self.emit("*out = %s;" % t.name, 2)
@@ -558,7 +558,7 @@ def complexSum(self, sum, name):
             self.emit("tp = state->%s_type;" % (t.name,), 1)
             self.emit("isinstance = PyObject_IsInstance(obj, tp);", 1)
             self.emit("if (isinstance == -1) {", 1)
-            self.emit("return 1;", 2)
+            self.emit("return -1;", 2)
             self.emit("}", 1)
             self.emit("if (isinstance) {", 1)
             for f in t.fields:
@@ -601,10 +601,11 @@ def visitProduct(self, prod, name):
         args = [f.name for f in prod.fields]
         args.extend([a.name for a in prod.attributes])
         self.emit("*out = %s(%s);" % (ast_func_name(name), self.buildArgs(args)), 1)
+        self.emit("if (*out == NULL) goto failed;", 1)
         self.emit("return 0;", 1)
         self.emit("failed:", 0)
         self.emit("Py_XDECREF(tmp);", 1)
-        self.emit("return 1;", 1)
+        self.emit("return -1;", 1)
         self.emit("}", 0)
         self.emit("", 0)
 
@@ -628,33 +629,42 @@ def isSimpleType(self, field):
 
     def visitField(self, field, name, sum=None, prod=None, depth=0):
         ctype = get_c_type(field.type)
-        line = "if (_PyObject_LookupAttr(obj, state->%s, &tmp) < 0) {"
+        line = "if (PyObject_GetOptionalAttr(obj, state->%s, &tmp) < 0) {"
         self.emit(line % field.name, depth)
-        self.emit("return 1;", depth+1)
+        self.emit("return -1;", depth+1)
         self.emit("}", depth)
-        if not field.opt:
+        if field.seq:
             self.emit("if (tmp == NULL) {", depth)
-            message = "required field \\\"%s\\\" missing from %s" % (field.name, name)
-            format = "PyErr_SetString(PyExc_TypeError, \"%s\");"
-            self.emit(format % message, depth+1, reflow=False)
-            self.emit("return 1;", depth+1)
+            self.emit("tmp = PyList_New(0);", depth+1)
+            self.emit("if (tmp == NULL) {", depth+1)
+            self.emit("return -1;", depth+2)
+            self.emit("}", depth+1)
+            self.emit("}", depth)
+            self.emit("{", depth)
         else:
-            self.emit("if (tmp == NULL || tmp == Py_None) {", depth)
-            self.emit("Py_CLEAR(tmp);", depth+1)
-            if self.isNumeric(field):
-                if field.name in self.attribute_special_defaults:
-                    self.emit(
-                        "%s = %s;" % (field.name, self.attribute_special_defaults[field.name]),
-                        depth+1,
-                    )
-                else:
-                    self.emit("%s = 0;" % field.name, depth+1)
-            elif not self.isSimpleType(field):
-                self.emit("%s = NULL;" % field.name, depth+1)
+            if not field.opt:
+                self.emit("if (tmp == NULL) {", depth)
+                message = "required field \\\"%s\\\" missing from %s" % (field.name, name)
+                format = "PyErr_SetString(PyExc_TypeError, \"%s\");"
+                self.emit(format % message, depth+1, reflow=False)
+                self.emit("return -1;", depth+1)
             else:
-                raise TypeError("could not determine the default value for %s" % field.name)
-        self.emit("}", depth)
-        self.emit("else {", depth)
+                self.emit("if (tmp == NULL || tmp == Py_None) {", depth)
+                self.emit("Py_CLEAR(tmp);", depth+1)
+                if self.isNumeric(field):
+                    if field.name in self.attribute_special_defaults:
+                        self.emit(
+                            "%s = %s;" % (field.name, self.attribute_special_defaults[field.name]),
+                            depth+1,
+                        )
+                    else:
+                        self.emit("%s = 0;" % field.name, depth+1)
+                elif not self.isSimpleType(field):
+                    self.emit("%s = NULL;" % field.name, depth+1)
+                else:
+                    raise TypeError("could not determine the default value for %s" % field.name)
+            self.emit("}", depth)
+            self.emit("else {", depth)
 
         self.emit("int res;", depth+1)
         if field.seq:
@@ -803,7 +813,7 @@ def visitModule(self, mod):
     Py_ssize_t i, numfields = 0;
     int res = -1;
     PyObject *key, *value, *fields;
-    if (_PyObject_LookupAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
         goto cleanup;
     }
     if (fields) {
@@ -877,7 +887,7 @@ def visitModule(self, mod):
     }
 
     PyObject *dict;
-    if (_PyObject_LookupAttr(self, state->__dict__, &dict) < 0) {
+    if (PyObject_GetOptionalAttr(self, state->__dict__, &dict) < 0) {
         return NULL;
     }
     if (dict) {
@@ -887,7 +897,7 @@ def visitModule(self, mod):
 }
 
 static PyMemberDef ast_type_members[] = {
-    {"__dictoffset__", T_PYSSIZET, offsetof(AST_object, dict), READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(AST_object, dict), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -958,16 +968,16 @@ def visitModule(self, mod):
     int i, result;
     PyObject *s, *l = PyTuple_New(num_fields);
     if (!l)
-        return 0;
+        return -1;
     for (i = 0; i < num_fields; i++) {
         s = PyUnicode_InternFromString(attrs[i]);
         if (!s) {
             Py_DECREF(l);
-            return 0;
+            return -1;
         }
         PyTuple_SET_ITEM(l, i, s);
     }
-    result = PyObject_SetAttr(type, state->_attributes, l) >= 0;
+    result = PyObject_SetAttr(type, state->_attributes, l);
     Py_DECREF(l);
     return result;
 }
@@ -1042,7 +1052,7 @@ def visitModule(self, mod):
 {
     if (!PyUnicode_CheckExact(obj) && obj != Py_None) {
         PyErr_SetString(PyExc_TypeError, "AST identifier must be of type str");
-        return 1;
+        return -1;
     }
     return obj2ast_object(state, obj, out, arena);
 }
@@ -1051,7 +1061,7 @@ def visitModule(self, mod):
 {
     if (!PyUnicode_CheckExact(obj) && !PyBytes_CheckExact(obj)) {
         PyErr_SetString(PyExc_TypeError, "AST string must be of type str");
-        return 1;
+        return -1;
     }
     return obj2ast_object(state, obj, out, arena);
 }
@@ -1061,12 +1071,12 @@ def visitModule(self, mod):
     int i;
     if (!PyLong_Check(obj)) {
         PyErr_Format(PyExc_ValueError, "invalid integer value: %R", obj);
-        return 1;
+        return -1;
     }
 
-    i = _PyLong_AsInt(obj);
+    i = PyLong_AsInt(obj);
     if (i == -1 && PyErr_Occurred())
-        return 1;
+        return -1;
     *out = i;
     return 0;
 }
@@ -1092,22 +1102,15 @@ def visitModule(self, mod):
             static int
             init_types(struct ast_state *state)
             {
-                // init_types() must not be called after _PyAST_Fini()
-                // has been called
-                assert(state->initialized >= 0);
-
-                if (state->initialized) {
-                    return 1;
-                }
                 if (init_identifiers(state) < 0) {
-                    return 0;
+                    return -1;
                 }
                 state->AST_type = PyType_FromSpec(&AST_type_spec);
                 if (!state->AST_type) {
-                    return 0;
+                    return -1;
                 }
                 if (add_ast_fields(state) < 0) {
-                    return 0;
+                    return -1;
                 }
         '''))
         for dfn in mod.dfns:
@@ -1115,8 +1118,7 @@ def visitModule(self, mod):
         self.file.write(textwrap.dedent('''
                 state->recursion_depth = 0;
                 state->recursion_limit = 0;
-                state->initialized = 1;
-                return 1;
+                return 0;
             }
         '''))
 
@@ -1128,12 +1130,12 @@ def visitProduct(self, prod, name):
         self.emit('state->%s_type = make_type(state, "%s", state->AST_type, %s, %d,' %
                         (name, name, fields, len(prod.fields)), 1)
         self.emit('%s);' % reflow_c_string(asdl_of(name, prod), 2), 2, reflow=False)
-        self.emit("if (!state->%s_type) return 0;" % name, 1)
+        self.emit("if (!state->%s_type) return -1;" % name, 1)
         if prod.attributes:
-            self.emit("if (!add_attributes(state, state->%s_type, %s_attributes, %d)) return 0;" %
+            self.emit("if (add_attributes(state, state->%s_type, %s_attributes, %d) < 0) return -1;" %
                             (name, name, len(prod.attributes)), 1)
         else:
-            self.emit("if (!add_attributes(state, state->%s_type, NULL, 0)) return 0;" % name, 1)
+            self.emit("if (add_attributes(state, state->%s_type, NULL, 0) < 0) return -1;" % name, 1)
         self.emit_defaults(name, prod.fields, 1)
         self.emit_defaults(name, prod.attributes, 1)
 
@@ -1141,12 +1143,12 @@ def visitSum(self, sum, name):
         self.emit('state->%s_type = make_type(state, "%s", state->AST_type, NULL, 0,' %
                   (name, name), 1)
         self.emit('%s);' % reflow_c_string(asdl_of(name, sum), 2), 2, reflow=False)
-        self.emit("if (!state->%s_type) return 0;" % name, 1)
+        self.emit("if (!state->%s_type) return -1;" % name, 1)
         if sum.attributes:
-            self.emit("if (!add_attributes(state, state->%s_type, %s_attributes, %d)) return 0;" %
+            self.emit("if (add_attributes(state, state->%s_type, %s_attributes, %d) < 0) return -1;" %
                             (name, name, len(sum.attributes)), 1)
         else:
-            self.emit("if (!add_attributes(state, state->%s_type, NULL, 0)) return 0;" % name, 1)
+            self.emit("if (add_attributes(state, state->%s_type, NULL, 0) < 0) return -1;" % name, 1)
         self.emit_defaults(name, sum.attributes, 1)
         simple = is_simple(sum)
         for t in sum.types:
@@ -1160,20 +1162,20 @@ def visitConstructor(self, cons, name, simple):
         self.emit('state->%s_type = make_type(state, "%s", state->%s_type, %s, %d,' %
                             (cons.name, cons.name, name, fields, len(cons.fields)), 1)
         self.emit('%s);' % reflow_c_string(asdl_of(cons.name, cons), 2), 2, reflow=False)
-        self.emit("if (!state->%s_type) return 0;" % cons.name, 1)
+        self.emit("if (!state->%s_type) return -1;" % cons.name, 1)
         self.emit_defaults(cons.name, cons.fields, 1)
         if simple:
             self.emit("state->%s_singleton = PyType_GenericNew((PyTypeObject *)"
                       "state->%s_type, NULL, NULL);" %
                              (cons.name, cons.name), 1)
-            self.emit("if (!state->%s_singleton) return 0;" % cons.name, 1)
+            self.emit("if (!state->%s_singleton) return -1;" % cons.name, 1)
 
     def emit_defaults(self, name, fields, depth):
         for field in fields:
             if field.opt:
                 self.emit('if (PyObject_SetAttr(state->%s_type, state->%s, Py_None) == -1)' %
                             (name, field.name), depth)
-                self.emit("return 0;", depth+1)
+                self.emit("return -1;", depth+1)
 
 
 class ASTModuleVisitor(PickleVisitor):
@@ -1198,6 +1200,9 @@ def visitModule(self, mod):
         self.emit('if (PyModule_AddIntMacro(m, PyCF_TYPE_COMMENTS) < 0) {', 1)
         self.emit("return -1;", 2)
         self.emit('}', 1)
+        self.emit('if (PyModule_AddIntMacro(m, PyCF_OPTIMIZED_AST) < 0) {', 1)
+        self.emit("return -1;", 2)
+        self.emit('}', 1)
         for dfn in mod.dfns:
             self.visit(dfn)
         self.emit("return 0;", 1)
@@ -1266,13 +1271,14 @@ def func_begin(self, name):
         self.emit("if (++state->recursion_depth > state->recursion_limit) {", 1)
         self.emit("PyErr_SetString(PyExc_RecursionError,", 2)
         self.emit('"maximum recursion depth exceeded during ast construction");', 3)
-        self.emit("return 0;", 2)
+        self.emit("return NULL;", 2)
         self.emit("}", 1)
 
     def func_end(self):
         self.emit("state->recursion_depth--;", 1)
         self.emit("return result;", 1)
         self.emit("failed:", 0)
+        self.emit("state->recursion_depth--;", 1)
         self.emit("Py_XDECREF(value);", 1)
         self.emit("Py_XDECREF(result);", 1)
         self.emit("return NULL;", 1)
@@ -1383,13 +1389,13 @@ class PartingShots(StaticVisitor):
 
     int starting_recursion_depth;
     /* Be careful here to prevent overflow. */
-    int COMPILER_STACK_FRAME_SCALE = 3;
+    int COMPILER_STACK_FRAME_SCALE = 2;
     PyThreadState *tstate = _PyThreadState_GET();
     if (!tstate) {
-        return 0;
+        return NULL;
     }
-    state->recursion_limit = C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
-    int recursion_depth = C_RECURSION_LIMIT - tstate->c_recursion_remaining;
+    state->recursion_limit = Py_C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
+    int recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
     starting_recursion_depth = recursion_depth * COMPILER_STACK_FRAME_SCALE;
     state->recursion_depth = starting_recursion_depth;
 
@@ -1400,7 +1406,7 @@ class PartingShots(StaticVisitor):
         PyErr_Format(PyExc_SystemError,
             "AST constructor recursion depth mismatch (before=%d, after=%d)",
             starting_recursion_depth, state->recursion_depth);
-        return 0;
+        return NULL;
     }
     return result;
 }
@@ -1467,7 +1473,8 @@ def visit(self, object):
 
 def generate_ast_state(module_state, f):
     f.write('struct ast_state {\n')
-    f.write('    int initialized;\n')
+    f.write('    _PyOnceFlag once;\n')
+    f.write('    int finalized;\n')
     f.write('    int recursion_depth;\n')
     f.write('    int recursion_limit;\n')
     for s in module_state:
@@ -1487,11 +1494,8 @@ def generate_ast_fini(module_state, f):
     f.write(textwrap.dedent("""
                 Py_CLEAR(_Py_INTERP_CACHED_OBJECT(interp, str_replace_inf));
 
-            #if !defined(NDEBUG)
-                state->initialized = -1;
-            #else
-                state->initialized = 0;
-            #endif
+                state->finalized = 1;
+                state->once = (_PyOnceFlag){0};
             }
 
     """))
@@ -1530,9 +1534,9 @@ def generate_module_def(mod, metadata, f, internal_h):
         #include "pycore_ast.h"
         #include "pycore_ast_state.h"     // struct ast_state
         #include "pycore_ceval.h"         // _Py_EnterRecursiveCall
+        #include "pycore_lock.h"          // _PyOnceFlag
         #include "pycore_interp.h"        // _PyInterpreterState.ast
         #include "pycore_pystate.h"       // _PyInterpreterState_GET()
-        #include "structmember.h"
         #include <stddef.h>
 
         // Forward declaration
@@ -1543,7 +1547,8 @@ def generate_module_def(mod, metadata, f, internal_h):
         {
             PyInterpreterState *interp = _PyInterpreterState_GET();
             struct ast_state *state = &interp->ast;
-            if (!init_types(state)) {
+            assert(!state->finalized);
+            if (_PyOnceFlag_CallOnce(&state->once, (_Py_once_fn_t *)&init_types, state) < 0) {
                 return NULL;
             }
             return state;
@@ -1557,8 +1562,8 @@ def generate_module_def(mod, metadata, f, internal_h):
     for identifier in state_strings:
         f.write('    if ((state->' + identifier)
         f.write(' = PyUnicode_InternFromString("')
-        f.write(identifier + '")) == NULL) return 0;\n')
-    f.write('    return 1;\n')
+        f.write(identifier + '")) == NULL) return -1;\n')
+    f.write('    return 0;\n')
     f.write('};\n\n')
 
 def write_header(mod, metadata, f):
@@ -1573,7 +1578,7 @@ def write_header(mod, metadata, f):
         #  error "this header requires Py_BUILD_CORE define"
         #endif
 
-        #include "pycore_asdl.h"
+        #include "pycore_asdl.h"          // _ASDL_SEQ_HEAD
 
     """).lstrip())
 
@@ -1616,6 +1621,9 @@ def write_internal_h_header(mod, f):
     print(textwrap.dedent("""
         #ifndef Py_INTERNAL_AST_STATE_H
         #define Py_INTERNAL_AST_STATE_H
+
+        #include "pycore_lock.h"    // _PyOnceFlag
+
         #ifdef __cplusplus
         extern "C" {
         #endif
diff --git a/Parser/lexer/buffer.c b/Parser/lexer/buffer.c
new file mode 100644
index 00000000000000..f6502bf8f7f2d1
--- /dev/null
+++ b/Parser/lexer/buffer.c
@@ -0,0 +1,76 @@
+#include "Python.h"
+#include "errcode.h"
+
+#include "state.h"
+
+/* Traverse and remember all f-string buffers, in order to be able to restore
+   them after reallocating tok->buf */
+void
+_PyLexer_remember_fstring_buffers(struct tok_state *tok)
+{
+    int index;
+    tokenizer_mode *mode;
+
+    for (index = tok->tok_mode_stack_index; index >= 0; --index) {
+        mode = &(tok->tok_mode_stack[index]);
+        mode->f_string_start_offset = mode->f_string_start - tok->buf;
+        mode->f_string_multi_line_start_offset = mode->f_string_multi_line_start - tok->buf;
+    }
+}
+
+/* Traverse and restore all f-string buffers after reallocating tok->buf */
+void
+_PyLexer_restore_fstring_buffers(struct tok_state *tok)
+{
+    int index;
+    tokenizer_mode *mode;
+
+    for (index = tok->tok_mode_stack_index; index >= 0; --index) {
+        mode = &(tok->tok_mode_stack[index]);
+        mode->f_string_start = tok->buf + mode->f_string_start_offset;
+        mode->f_string_multi_line_start = tok->buf + mode->f_string_multi_line_start_offset;
+    }
+}
+
+/* Read a line of text from TOK into S, using the stream in TOK.
+   Return NULL on failure, else S.
+
+   On entry, tok->decoding_buffer will be one of:
+     1) NULL: need to call tok->decoding_readline to get a new line
+     2) PyUnicodeObject *: decoding_feof has called tok->decoding_readline and
+       stored the result in tok->decoding_buffer
+     3) PyByteArrayObject *: previous call to tok_readline_recode did not have enough room
+       (in the s buffer) to copy entire contents of the line read
+       by tok->decoding_readline.  tok->decoding_buffer has the overflow.
+       In this case, tok_readline_recode is called in a loop (with an expanded buffer)
+       until the buffer ends with a '\n' (or until the end of the file is
+       reached): see tok_nextc and its calls to tok_reserve_buf.
+*/
+int
+_PyLexer_tok_reserve_buf(struct tok_state *tok, Py_ssize_t size)
+{
+    Py_ssize_t cur = tok->cur - tok->buf;
+    Py_ssize_t oldsize = tok->inp - tok->buf;
+    Py_ssize_t newsize = oldsize + Py_MAX(size, oldsize >> 1);
+    if (newsize > tok->end - tok->buf) {
+        char *newbuf = tok->buf;
+        Py_ssize_t start = tok->start == NULL ? -1 : tok->start - tok->buf;
+        Py_ssize_t line_start = tok->start == NULL ? -1 : tok->line_start - tok->buf;
+        Py_ssize_t multi_line_start = tok->multi_line_start - tok->buf;
+        _PyLexer_remember_fstring_buffers(tok);
+        newbuf = (char *)PyMem_Realloc(newbuf, newsize);
+        if (newbuf == NULL) {
+            tok->done = E_NOMEM;
+            return 0;
+        }
+        tok->buf = newbuf;
+        tok->cur = tok->buf + cur;
+        tok->inp = tok->buf + oldsize;
+        tok->end = tok->buf + newsize;
+        tok->start = start < 0 ? NULL : tok->buf + start;
+        tok->line_start = line_start < 0 ? NULL : tok->buf + line_start;
+        tok->multi_line_start = multi_line_start < 0 ? NULL : tok->buf + multi_line_start;
+        _PyLexer_restore_fstring_buffers(tok);
+    }
+    return 1;
+}
diff --git a/Parser/lexer/buffer.h b/Parser/lexer/buffer.h
new file mode 100644
index 00000000000000..bb218162ff4845
--- /dev/null
+++ b/Parser/lexer/buffer.h
@@ -0,0 +1,10 @@
+#ifndef _LEXER_BUFFER_H_
+#define _LEXER_BUFFER_H_
+
+#include "pyport.h"
+
+void _PyLexer_remember_fstring_buffers(struct tok_state *tok);
+void _PyLexer_restore_fstring_buffers(struct tok_state *tok);
+int _PyLexer_tok_reserve_buf(struct tok_state *tok, Py_ssize_t size);
+
+#endif
diff --git a/Parser/lexer/lexer.c b/Parser/lexer/lexer.c
new file mode 100644
index 00000000000000..ea4bdf7ce4a24c
--- /dev/null
+++ b/Parser/lexer/lexer.c
@@ -0,0 +1,1480 @@
+#include "Python.h"
+#include "pycore_token.h"
+#include "pycore_unicodeobject.h"
+#include "errcode.h"
+
+#include "state.h"
+#include "../tokenizer/helpers.h"
+
+/* Alternate tab spacing */
+#define ALTTABSIZE 1
+
+#define is_potential_identifier_start(c) (\
+              (c >= 'a' && c <= 'z')\
+               || (c >= 'A' && c <= 'Z')\
+               || c == '_'\
+               || (c >= 128))
+
+#define is_potential_identifier_char(c) (\
+              (c >= 'a' && c <= 'z')\
+               || (c >= 'A' && c <= 'Z')\
+               || (c >= '0' && c <= '9')\
+               || c == '_'\
+               || (c >= 128))
+
+#ifdef Py_DEBUG
+static inline tokenizer_mode* TOK_GET_MODE(struct tok_state* tok) {
+    assert(tok->tok_mode_stack_index >= 0);
+    assert(tok->tok_mode_stack_index < MAXFSTRINGLEVEL);
+    return &(tok->tok_mode_stack[tok->tok_mode_stack_index]);
+}
+static inline tokenizer_mode* TOK_NEXT_MODE(struct tok_state* tok) {
+    assert(tok->tok_mode_stack_index >= 0);
+    assert(tok->tok_mode_stack_index + 1 < MAXFSTRINGLEVEL);
+    return &(tok->tok_mode_stack[++tok->tok_mode_stack_index]);
+}
+#else
+#define TOK_GET_MODE(tok) (&(tok->tok_mode_stack[tok->tok_mode_stack_index]))
+#define TOK_NEXT_MODE(tok) (&(tok->tok_mode_stack[++tok->tok_mode_stack_index]))
+#endif
+
+#define MAKE_TOKEN(token_type) _PyLexer_token_setup(tok, token, token_type, p_start, p_end)
+#define MAKE_TYPE_COMMENT_TOKEN(token_type, col_offset, end_col_offset) (\
+                _PyLexer_type_comment_token_setup(tok, token, token_type, col_offset, end_col_offset, p_start, p_end))
+
+/* Spaces in this constant are treated as "zero or more spaces or tabs" when
+   tokenizing. */
+static const char* type_comment_prefix = "# type: ";
+
+static inline int
+contains_null_bytes(const char* str, size_t size)
+{
+    return memchr(str, 0, size) != NULL;
+}
+
+/* Get next char, updating state; error code goes into tok->done */
+static int
+tok_nextc(struct tok_state *tok)
+{
+    int rc;
+    for (;;) {
+        if (tok->cur != tok->inp) {
+            if ((unsigned int) tok->col_offset >= (unsigned int) INT_MAX) {
+                tok->done = E_COLUMNOVERFLOW;
+                return EOF;
+            }
+            tok->col_offset++;
+            return Py_CHARMASK(*tok->cur++); /* Fast path */
+        }
+        if (tok->done != E_OK) {
+            return EOF;
+        }
+        rc = tok->underflow(tok);
+#if defined(Py_DEBUG)
+        if (tok->debug) {
+            fprintf(stderr, "line[%d] = ", tok->lineno);
+            _PyTokenizer_print_escape(stderr, tok->cur, tok->inp - tok->cur);
+            fprintf(stderr, "  tok->done = %d\n", tok->done);
+        }
+#endif
+        if (!rc) {
+            tok->cur = tok->inp;
+            return EOF;
+        }
+        tok->line_start = tok->cur;
+
+        if (contains_null_bytes(tok->line_start, tok->inp - tok->line_start)) {
+            _PyTokenizer_syntaxerror(tok, "source code cannot contain null bytes");
+            tok->cur = tok->inp;
+            return EOF;
+        }
+    }
+    Py_UNREACHABLE();
+}
+
+/* Back-up one character */
+static void
+tok_backup(struct tok_state *tok, int c)
+{
+    if (c != EOF) {
+        if (--tok->cur < tok->buf) {
+            Py_FatalError("tokenizer beginning of buffer");
+        }
+        if ((int)(unsigned char)*tok->cur != Py_CHARMASK(c)) {
+            Py_FatalError("tok_backup: wrong character");
+        }
+        tok->col_offset--;
+    }
+}
+
+static int
+set_fstring_expr(struct tok_state* tok, struct token *token, char c) {
+    assert(token != NULL);
+    assert(c == '}' || c == ':' || c == '!');
+    tokenizer_mode *tok_mode = TOK_GET_MODE(tok);
+
+    if (!tok_mode->f_string_debug || token->metadata) {
+        return 0;
+    }
+    PyObject *res = NULL;
+
+    // Check if there is a # character in the expression
+    int hash_detected = 0;
+    for (Py_ssize_t i = 0; i < tok_mode->last_expr_size - tok_mode->last_expr_end; i++) {
+        if (tok_mode->last_expr_buffer[i] == '#') {
+            hash_detected = 1;
+            break;
+        }
+    }
+
+    if (hash_detected) {
+        Py_ssize_t input_length = tok_mode->last_expr_size - tok_mode->last_expr_end;
+        char *result = (char *)PyObject_Malloc((input_length + 1) * sizeof(char));
+        if (!result) {
+            return -1;
+        }
+
+        Py_ssize_t i = 0;
+        Py_ssize_t j = 0;
+
+        for (i = 0, j = 0; i < input_length; i++) {
+            if (tok_mode->last_expr_buffer[i] == '#') {
+                // Skip characters until newline or end of string
+                while (tok_mode->last_expr_buffer[i] != '\0' && i < input_length) {
+                    if (tok_mode->last_expr_buffer[i] == '\n') {
+                        result[j++] = tok_mode->last_expr_buffer[i];
+                        break;
+                    }
+                    i++;
+                }
+            } else {
+                result[j++] = tok_mode->last_expr_buffer[i];
+            }
+        }
+
+        result[j] = '\0';  // Null-terminate the result string
+        res = PyUnicode_DecodeUTF8(result, j, NULL);
+        PyObject_Free(result);
+    } else {
+        res = PyUnicode_DecodeUTF8(
+            tok_mode->last_expr_buffer,
+            tok_mode->last_expr_size - tok_mode->last_expr_end,
+            NULL
+        );
+
+    }
+
+
+   if (!res) {
+        return -1;
+    }
+    token->metadata = res;
+    return 0;
+}
+
+int
+_PyLexer_update_fstring_expr(struct tok_state *tok, char cur)
+{
+    assert(tok->cur != NULL);
+
+    Py_ssize_t size = strlen(tok->cur);
+    tokenizer_mode *tok_mode = TOK_GET_MODE(tok);
+
+    switch (cur) {
+       case 0:
+            if (!tok_mode->last_expr_buffer || tok_mode->last_expr_end >= 0) {
+                return 1;
+            }
+            char *new_buffer = PyMem_Realloc(
+                tok_mode->last_expr_buffer,
+                tok_mode->last_expr_size + size
+            );
+            if (new_buffer == NULL) {
+                PyMem_Free(tok_mode->last_expr_buffer);
+                goto error;
+            }
+            tok_mode->last_expr_buffer = new_buffer;
+            strncpy(tok_mode->last_expr_buffer + tok_mode->last_expr_size, tok->cur, size);
+            tok_mode->last_expr_size += size;
+            break;
+        case '{':
+            if (tok_mode->last_expr_buffer != NULL) {
+                PyMem_Free(tok_mode->last_expr_buffer);
+            }
+            tok_mode->last_expr_buffer = PyMem_Malloc(size);
+            if (tok_mode->last_expr_buffer == NULL) {
+                goto error;
+            }
+            tok_mode->last_expr_size = size;
+            tok_mode->last_expr_end = -1;
+            strncpy(tok_mode->last_expr_buffer, tok->cur, size);
+            break;
+        case '}':
+        case '!':
+        case ':':
+            if (tok_mode->last_expr_end == -1) {
+                tok_mode->last_expr_end = strlen(tok->start);
+            }
+            break;
+        default:
+            Py_UNREACHABLE();
+    }
+    return 1;
+error:
+    tok->done = E_NOMEM;
+    return 0;
+}
+
+static int
+lookahead(struct tok_state *tok, const char *test)
+{
+    const char *s = test;
+    int res = 0;
+    while (1) {
+        int c = tok_nextc(tok);
+        if (*s == 0) {
+            res = !is_potential_identifier_char(c);
+        }
+        else if (c == *s) {
+            s++;
+            continue;
+        }
+
+        tok_backup(tok, c);
+        while (s != test) {
+            tok_backup(tok, *--s);
+        }
+        return res;
+    }
+}
+
+static int
+verify_end_of_number(struct tok_state *tok, int c, const char *kind) {
+    if (tok->tok_extra_tokens) {
+        // When we are parsing extra tokens, we don't want to emit warnings
+        // about invalid literals, because we want to be a bit more liberal.
+        return 1;
+    }
+    /* Emit a deprecation warning only if the numeric literal is immediately
+     * followed by one of keywords which can occur after a numeric literal
+     * in valid code: "and", "else", "for", "if", "in", "is" and "or".
+     * It allows to gradually deprecate existing valid code without adding
+     * warning before error in most cases of invalid numeric literal (which
+     * would be confusing and break existing tests).
+     * Raise a syntax error with slightly better message than plain
+     * "invalid syntax" if the numeric literal is immediately followed by
+     * other keyword or identifier.
+     */
+    int r = 0;
+    if (c == 'a') {
+        r = lookahead(tok, "nd");
+    }
+    else if (c == 'e') {
+        r = lookahead(tok, "lse");
+    }
+    else if (c == 'f') {
+        r = lookahead(tok, "or");
+    }
+    else if (c == 'i') {
+        int c2 = tok_nextc(tok);
+        if (c2 == 'f' || c2 == 'n' || c2 == 's') {
+            r = 1;
+        }
+        tok_backup(tok, c2);
+    }
+    else if (c == 'o') {
+        r = lookahead(tok, "r");
+    }
+    else if (c == 'n') {
+        r = lookahead(tok, "ot");
+    }
+    if (r) {
+        tok_backup(tok, c);
+        if (_PyTokenizer_parser_warn(tok, PyExc_SyntaxWarning,
+                "invalid %s literal", kind))
+        {
+            return 0;
+        }
+        tok_nextc(tok);
+    }
+    else /* In future releases, only error will remain. */
+    if (c < 128 && is_potential_identifier_char(c)) {
+        tok_backup(tok, c);
+        _PyTokenizer_syntaxerror(tok, "invalid %s literal", kind);
+        return 0;
+    }
+    return 1;
+}
+
+/* Verify that the identifier follows PEP 3131.
+   All identifier strings are guaranteed to be "ready" unicode objects.
+ */
+static int
+verify_identifier(struct tok_state *tok)
+{
+    if (tok->tok_extra_tokens) {
+        return 1;
+    }
+    PyObject *s;
+    if (tok->decoding_erred)
+        return 0;
+    s = PyUnicode_DecodeUTF8(tok->start, tok->cur - tok->start, NULL);
+    if (s == NULL) {
+        if (PyErr_ExceptionMatches(PyExc_UnicodeDecodeError)) {
+            tok->done = E_DECODE;
+        }
+        else {
+            tok->done = E_ERROR;
+        }
+        return 0;
+    }
+    Py_ssize_t invalid = _PyUnicode_ScanIdentifier(s);
+    if (invalid < 0) {
+        Py_DECREF(s);
+        tok->done = E_ERROR;
+        return 0;
+    }
+    assert(PyUnicode_GET_LENGTH(s) > 0);
+    if (invalid < PyUnicode_GET_LENGTH(s)) {
+        Py_UCS4 ch = PyUnicode_READ_CHAR(s, invalid);
+        if (invalid + 1 < PyUnicode_GET_LENGTH(s)) {
+            /* Determine the offset in UTF-8 encoded input */
+            Py_SETREF(s, PyUnicode_Substring(s, 0, invalid + 1));
+            if (s != NULL) {
+                Py_SETREF(s, PyUnicode_AsUTF8String(s));
+            }
+            if (s == NULL) {
+                tok->done = E_ERROR;
+                return 0;
+            }
+            tok->cur = (char *)tok->start + PyBytes_GET_SIZE(s);
+        }
+        Py_DECREF(s);
+        if (Py_UNICODE_ISPRINTABLE(ch)) {
+            _PyTokenizer_syntaxerror(tok, "invalid character '%c' (U+%04X)", ch, ch);
+        }
+        else {
+            _PyTokenizer_syntaxerror(tok, "invalid non-printable character U+%04X", ch);
+        }
+        return 0;
+    }
+    Py_DECREF(s);
+    return 1;
+}
+
+static int
+tok_decimal_tail(struct tok_state *tok)
+{
+    int c;
+
+    while (1) {
+        do {
+            c = tok_nextc(tok);
+        } while (Py_ISDIGIT(c));
+        if (c != '_') {
+            break;
+        }
+        c = tok_nextc(tok);
+        if (!Py_ISDIGIT(c)) {
+            tok_backup(tok, c);
+            _PyTokenizer_syntaxerror(tok, "invalid decimal literal");
+            return 0;
+        }
+    }
+    return c;
+}
+
+static inline int
+tok_continuation_line(struct tok_state *tok) {
+    int c = tok_nextc(tok);
+    if (c == '\r') {
+        c = tok_nextc(tok);
+    }
+    if (c != '\n') {
+        tok->done = E_LINECONT;
+        return -1;
+    }
+    c = tok_nextc(tok);
+    if (c == EOF) {
+        tok->done = E_EOF;
+        tok->cur = tok->inp;
+        return -1;
+    } else {
+        tok_backup(tok, c);
+    }
+    return c;
+}
+
+static int
+tok_get_normal_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct token *token)
+{
+    int c;
+    int blankline, nonascii;
+
+    const char *p_start = NULL;
+    const char *p_end = NULL;
+  nextline:
+    tok->start = NULL;
+    tok->starting_col_offset = -1;
+    blankline = 0;
+
+
+    /* Get indentation level */
+    if (tok->atbol) {
+        int col = 0;
+        int altcol = 0;
+        tok->atbol = 0;
+        int cont_line_col = 0;
+        for (;;) {
+            c = tok_nextc(tok);
+            if (c == ' ') {
+                col++, altcol++;
+            }
+            else if (c == '\t') {
+                col = (col / tok->tabsize + 1) * tok->tabsize;
+                altcol = (altcol / ALTTABSIZE + 1) * ALTTABSIZE;
+            }
+            else if (c == '\014')  {/* Control-L (formfeed) */
+                col = altcol = 0; /* For Emacs users */
+            }
+            else if (c == '\\') {
+                // Indentation cannot be split over multiple physical lines
+                // using backslashes. This means that if we found a backslash
+                // preceded by whitespace, **the first one we find** determines
+                // the level of indentation of whatever comes next.
+                cont_line_col = cont_line_col ? cont_line_col : col;
+                if ((c = tok_continuation_line(tok)) == -1) {
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+            else {
+                break;
+            }
+        }
+        tok_backup(tok, c);
+        if (c == '#' || c == '\n' || c == '\r') {
+            /* Lines with only whitespace and/or comments
+               shouldn't affect the indentation and are
+               not passed to the parser as NEWLINE tokens,
+               except *totally* empty lines in interactive
+               mode, which signal the end of a command group. */
+            if (col == 0 && c == '\n' && tok->prompt != NULL) {
+                blankline = 0; /* Let it through */
+            }
+            else if (tok->prompt != NULL && tok->lineno == 1) {
+                /* In interactive mode, if the first line contains
+                   only spaces and/or a comment, let it through. */
+                blankline = 0;
+                col = altcol = 0;
+            }
+            else {
+                blankline = 1; /* Ignore completely */
+            }
+            /* We can't jump back right here since we still
+               may need to skip to the end of a comment */
+        }
+        if (!blankline && tok->level == 0) {
+            col = cont_line_col ? cont_line_col : col;
+            altcol = cont_line_col ? cont_line_col : altcol;
+            if (col == tok->indstack[tok->indent]) {
+                /* No change */
+                if (altcol != tok->altindstack[tok->indent]) {
+                    return MAKE_TOKEN(_PyTokenizer_indenterror(tok));
+                }
+            }
+            else if (col > tok->indstack[tok->indent]) {
+                /* Indent -- always one */
+                if (tok->indent+1 >= MAXINDENT) {
+                    tok->done = E_TOODEEP;
+                    tok->cur = tok->inp;
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+                if (altcol <= tok->altindstack[tok->indent]) {
+                    return MAKE_TOKEN(_PyTokenizer_indenterror(tok));
+                }
+                tok->pendin++;
+                tok->indstack[++tok->indent] = col;
+                tok->altindstack[tok->indent] = altcol;
+            }
+            else /* col < tok->indstack[tok->indent] */ {
+                /* Dedent -- any number, must be consistent */
+                while (tok->indent > 0 &&
+                    col < tok->indstack[tok->indent]) {
+                    tok->pendin--;
+                    tok->indent--;
+                }
+                if (col != tok->indstack[tok->indent]) {
+                    tok->done = E_DEDENT;
+                    tok->cur = tok->inp;
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+                if (altcol != tok->altindstack[tok->indent]) {
+                    return MAKE_TOKEN(_PyTokenizer_indenterror(tok));
+                }
+            }
+        }
+    }
+
+    tok->start = tok->cur;
+    tok->starting_col_offset = tok->col_offset;
+
+    /* Return pending indents/dedents */
+    if (tok->pendin != 0) {
+        if (tok->pendin < 0) {
+            if (tok->tok_extra_tokens) {
+                p_start = tok->cur;
+                p_end = tok->cur;
+            }
+            tok->pendin++;
+            return MAKE_TOKEN(DEDENT);
+        }
+        else {
+            if (tok->tok_extra_tokens) {
+                p_start = tok->buf;
+                p_end = tok->cur;
+            }
+            tok->pendin--;
+            return MAKE_TOKEN(INDENT);
+        }
+    }
+
+    /* Peek ahead at the next character */
+    c = tok_nextc(tok);
+    tok_backup(tok, c);
+
+ again:
+    tok->start = NULL;
+    /* Skip spaces */
+    do {
+        c = tok_nextc(tok);
+    } while (c == ' ' || c == '\t' || c == '\014');
+
+    /* Set start of current token */
+    tok->start = tok->cur == NULL ? NULL : tok->cur - 1;
+    tok->starting_col_offset = tok->col_offset - 1;
+
+    /* Skip comment, unless it's a type comment */
+    if (c == '#') {
+
+        const char* p = NULL;
+        const char *prefix, *type_start;
+        int current_starting_col_offset;
+
+        while (c != EOF && c != '\n' && c != '\r') {
+            c = tok_nextc(tok);
+        }
+
+        if (tok->tok_extra_tokens) {
+            p = tok->start;
+        }
+
+        if (tok->type_comments) {
+            p = tok->start;
+            current_starting_col_offset = tok->starting_col_offset;
+            prefix = type_comment_prefix;
+            while (*prefix && p < tok->cur) {
+                if (*prefix == ' ') {
+                    while (*p == ' ' || *p == '\t') {
+                        p++;
+                        current_starting_col_offset++;
+                    }
+                } else if (*prefix == *p) {
+                    p++;
+                    current_starting_col_offset++;
+                } else {
+                    break;
+                }
+
+                prefix++;
+            }
+
+            /* This is a type comment if we matched all of type_comment_prefix. */
+            if (!*prefix) {
+                int is_type_ignore = 1;
+                // +6 in order to skip the word 'ignore'
+                const char *ignore_end = p + 6;
+                const int ignore_end_col_offset = current_starting_col_offset + 6;
+                tok_backup(tok, c);  /* don't eat the newline or EOF */
+
+                type_start = p;
+
+                /* A TYPE_IGNORE is "type: ignore" followed by the end of the token
+                 * or anything ASCII and non-alphanumeric. */
+                is_type_ignore = (
+                    tok->cur >= ignore_end && memcmp(p, "ignore", 6) == 0
+                    && !(tok->cur > ignore_end
+                         && ((unsigned char)ignore_end[0] >= 128 || Py_ISALNUM(ignore_end[0]))));
+
+                if (is_type_ignore) {
+                    p_start = ignore_end;
+                    p_end = tok->cur;
+
+                    /* If this type ignore is the only thing on the line, consume the newline also. */
+                    if (blankline) {
+                        tok_nextc(tok);
+                        tok->atbol = 1;
+                    }
+                    return MAKE_TYPE_COMMENT_TOKEN(TYPE_IGNORE, ignore_end_col_offset, tok->col_offset);
+                } else {
+                    p_start = type_start;
+                    p_end = tok->cur;
+                    return MAKE_TYPE_COMMENT_TOKEN(TYPE_COMMENT, current_starting_col_offset, tok->col_offset);
+                }
+            }
+        }
+        if (tok->tok_extra_tokens) {
+            tok_backup(tok, c);  /* don't eat the newline or EOF */
+            p_start = p;
+            p_end = tok->cur;
+            tok->comment_newline = blankline;
+            return MAKE_TOKEN(COMMENT);
+        }
+    }
+
+    if (tok->done == E_INTERACT_STOP) {
+        return MAKE_TOKEN(ENDMARKER);
+    }
+
+    /* Check for EOF and errors now */
+    if (c == EOF) {
+        if (tok->level) {
+            return MAKE_TOKEN(ERRORTOKEN);
+        }
+        return MAKE_TOKEN(tok->done == E_EOF ? ENDMARKER : ERRORTOKEN);
+    }
+
+    /* Identifier (most frequent token!) */
+    nonascii = 0;
+    if (is_potential_identifier_start(c)) {
+        /* Process the various legal combinations of b"", r"", u"", and f"". */
+        int saw_b = 0, saw_r = 0, saw_u = 0, saw_f = 0;
+        while (1) {
+            if (!(saw_b || saw_u || saw_f) && (c == 'b' || c == 'B'))
+                saw_b = 1;
+            /* Since this is a backwards compatibility support literal we don't
+               want to support it in arbitrary order like byte literals. */
+            else if (!(saw_b || saw_u || saw_r || saw_f)
+                     && (c == 'u'|| c == 'U')) {
+                saw_u = 1;
+            }
+            /* ur"" and ru"" are not supported */
+            else if (!(saw_r || saw_u) && (c == 'r' || c == 'R')) {
+                saw_r = 1;
+            }
+            else if (!(saw_f || saw_b || saw_u) && (c == 'f' || c == 'F')) {
+                saw_f = 1;
+            }
+            else {
+                break;
+            }
+            c = tok_nextc(tok);
+            if (c == '"' || c == '\'') {
+                if (saw_f) {
+                    goto f_string_quote;
+                }
+                goto letter_quote;
+            }
+        }
+        while (is_potential_identifier_char(c)) {
+            if (c >= 128) {
+                nonascii = 1;
+            }
+            c = tok_nextc(tok);
+        }
+        tok_backup(tok, c);
+        if (nonascii && !verify_identifier(tok)) {
+            return MAKE_TOKEN(ERRORTOKEN);
+        }
+
+        p_start = tok->start;
+        p_end = tok->cur;
+
+        return MAKE_TOKEN(NAME);
+    }
+
+    if (c == '\r') {
+        c = tok_nextc(tok);
+    }
+
+    /* Newline */
+    if (c == '\n') {
+        tok->atbol = 1;
+        if (blankline || tok->level > 0) {
+            if (tok->tok_extra_tokens) {
+                if (tok->comment_newline) {
+                    tok->comment_newline = 0;
+                }
+                p_start = tok->start;
+                p_end = tok->cur;
+                return MAKE_TOKEN(NL);
+            }
+            goto nextline;
+        }
+        if (tok->comment_newline && tok->tok_extra_tokens) {
+            tok->comment_newline = 0;
+            p_start = tok->start;
+            p_end = tok->cur;
+            return MAKE_TOKEN(NL);
+        }
+        p_start = tok->start;
+        p_end = tok->cur - 1; /* Leave '\n' out of the string */
+        tok->cont_line = 0;
+        return MAKE_TOKEN(NEWLINE);
+    }
+
+    /* Period or number starting with period? */
+    if (c == '.') {
+        c = tok_nextc(tok);
+        if (Py_ISDIGIT(c)) {
+            goto fraction;
+        } else if (c == '.') {
+            c = tok_nextc(tok);
+            if (c == '.') {
+                p_start = tok->start;
+                p_end = tok->cur;
+                return MAKE_TOKEN(ELLIPSIS);
+            }
+            else {
+                tok_backup(tok, c);
+            }
+            tok_backup(tok, '.');
+        }
+        else {
+            tok_backup(tok, c);
+        }
+        p_start = tok->start;
+        p_end = tok->cur;
+        return MAKE_TOKEN(DOT);
+    }
+
+    /* Number */
+    if (Py_ISDIGIT(c)) {
+        if (c == '0') {
+            /* Hex, octal or binary -- maybe. */
+            c = tok_nextc(tok);
+            if (c == 'x' || c == 'X') {
+                /* Hex */
+                c = tok_nextc(tok);
+                do {
+                    if (c == '_') {
+                        c = tok_nextc(tok);
+                    }
+                    if (!Py_ISXDIGIT(c)) {
+                        tok_backup(tok, c);
+                        return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid hexadecimal literal"));
+                    }
+                    do {
+                        c = tok_nextc(tok);
+                    } while (Py_ISXDIGIT(c));
+                } while (c == '_');
+                if (!verify_end_of_number(tok, c, "hexadecimal")) {
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+            else if (c == 'o' || c == 'O') {
+                /* Octal */
+                c = tok_nextc(tok);
+                do {
+                    if (c == '_') {
+                        c = tok_nextc(tok);
+                    }
+                    if (c < '0' || c >= '8') {
+                        if (Py_ISDIGIT(c)) {
+                            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok,
+                                    "invalid digit '%c' in octal literal", c));
+                        }
+                        else {
+                            tok_backup(tok, c);
+                            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid octal literal"));
+                        }
+                    }
+                    do {
+                        c = tok_nextc(tok);
+                    } while ('0' <= c && c < '8');
+                } while (c == '_');
+                if (Py_ISDIGIT(c)) {
+                    return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok,
+                            "invalid digit '%c' in octal literal", c));
+                }
+                if (!verify_end_of_number(tok, c, "octal")) {
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+            else if (c == 'b' || c == 'B') {
+                /* Binary */
+                c = tok_nextc(tok);
+                do {
+                    if (c == '_') {
+                        c = tok_nextc(tok);
+                    }
+                    if (c != '0' && c != '1') {
+                        if (Py_ISDIGIT(c)) {
+                            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid digit '%c' in binary literal", c));
+                        }
+                        else {
+                            tok_backup(tok, c);
+                            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid binary literal"));
+                        }
+                    }
+                    do {
+                        c = tok_nextc(tok);
+                    } while (c == '0' || c == '1');
+                } while (c == '_');
+                if (Py_ISDIGIT(c)) {
+                    return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid digit '%c' in binary literal", c));
+                }
+                if (!verify_end_of_number(tok, c, "binary")) {
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+            else {
+                int nonzero = 0;
+                /* maybe old-style octal; c is first char of it */
+                /* in any case, allow '0' as a literal */
+                while (1) {
+                    if (c == '_') {
+                        c = tok_nextc(tok);
+                        if (!Py_ISDIGIT(c)) {
+                            tok_backup(tok, c);
+                            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid decimal literal"));
+                        }
+                    }
+                    if (c != '0') {
+                        break;
+                    }
+                    c = tok_nextc(tok);
+                }
+                char* zeros_end = tok->cur;
+                if (Py_ISDIGIT(c)) {
+                    nonzero = 1;
+                    c = tok_decimal_tail(tok);
+                    if (c == 0) {
+                        return MAKE_TOKEN(ERRORTOKEN);
+                    }
+                }
+                if (c == '.') {
+                    c = tok_nextc(tok);
+                    goto fraction;
+                }
+                else if (c == 'e' || c == 'E') {
+                    goto exponent;
+                }
+                else if (c == 'j' || c == 'J') {
+                    goto imaginary;
+                }
+                else if (nonzero && !tok->tok_extra_tokens) {
+                    /* Old-style octal: now disallowed. */
+                    tok_backup(tok, c);
+                    return MAKE_TOKEN(_PyTokenizer_syntaxerror_known_range(
+                            tok, (int)(tok->start + 1 - tok->line_start),
+                            (int)(zeros_end - tok->line_start),
+                            "leading zeros in decimal integer "
+                            "literals are not permitted; "
+                            "use an 0o prefix for octal integers"));
+                }
+                if (!verify_end_of_number(tok, c, "decimal")) {
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+        }
+        else {
+            /* Decimal */
+            c = tok_decimal_tail(tok);
+            if (c == 0) {
+                return MAKE_TOKEN(ERRORTOKEN);
+            }
+            {
+                /* Accept floating point numbers. */
+                if (c == '.') {
+                    c = tok_nextc(tok);
+        fraction:
+                    /* Fraction */
+                    if (Py_ISDIGIT(c)) {
+                        c = tok_decimal_tail(tok);
+                        if (c == 0) {
+                            return MAKE_TOKEN(ERRORTOKEN);
+                        }
+                    }
+                }
+                if (c == 'e' || c == 'E') {
+                    int e;
+                  exponent:
+                    e = c;
+                    /* Exponent part */
+                    c = tok_nextc(tok);
+                    if (c == '+' || c == '-') {
+                        c = tok_nextc(tok);
+                        if (!Py_ISDIGIT(c)) {
+                            tok_backup(tok, c);
+                            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid decimal literal"));
+                        }
+                    } else if (!Py_ISDIGIT(c)) {
+                        tok_backup(tok, c);
+                        if (!verify_end_of_number(tok, e, "decimal")) {
+                            return MAKE_TOKEN(ERRORTOKEN);
+                        }
+                        tok_backup(tok, e);
+                        p_start = tok->start;
+                        p_end = tok->cur;
+                        return MAKE_TOKEN(NUMBER);
+                    }
+                    c = tok_decimal_tail(tok);
+                    if (c == 0) {
+                        return MAKE_TOKEN(ERRORTOKEN);
+                    }
+                }
+                if (c == 'j' || c == 'J') {
+                    /* Imaginary part */
+        imaginary:
+                    c = tok_nextc(tok);
+                    if (!verify_end_of_number(tok, c, "imaginary")) {
+                        return MAKE_TOKEN(ERRORTOKEN);
+                    }
+                }
+                else if (!verify_end_of_number(tok, c, "decimal")) {
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+        }
+        tok_backup(tok, c);
+        p_start = tok->start;
+        p_end = tok->cur;
+        return MAKE_TOKEN(NUMBER);
+    }
+
+  f_string_quote:
+    if (((Py_TOLOWER(*tok->start) == 'f' || Py_TOLOWER(*tok->start) == 'r') && (c == '\'' || c == '"'))) {
+        int quote = c;
+        int quote_size = 1;             /* 1 or 3 */
+
+        /* Nodes of type STRING, especially multi line strings
+           must be handled differently in order to get both
+           the starting line number and the column offset right.
+           (cf. issue 16806) */
+        tok->first_lineno = tok->lineno;
+        tok->multi_line_start = tok->line_start;
+
+        /* Find the quote size and start of string */
+        int after_quote = tok_nextc(tok);
+        if (after_quote == quote) {
+            int after_after_quote = tok_nextc(tok);
+            if (after_after_quote == quote) {
+                quote_size = 3;
+            }
+            else {
+                // TODO: Check this
+                tok_backup(tok, after_after_quote);
+                tok_backup(tok, after_quote);
+            }
+        }
+        if (after_quote != quote) {
+            tok_backup(tok, after_quote);
+        }
+
+
+        p_start = tok->start;
+        p_end = tok->cur;
+        if (tok->tok_mode_stack_index + 1 >= MAXFSTRINGLEVEL) {
+            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "too many nested f-strings"));
+        }
+        tokenizer_mode *the_current_tok = TOK_NEXT_MODE(tok);
+        the_current_tok->kind = TOK_FSTRING_MODE;
+        the_current_tok->f_string_quote = quote;
+        the_current_tok->f_string_quote_size = quote_size;
+        the_current_tok->f_string_start = tok->start;
+        the_current_tok->f_string_multi_line_start = tok->line_start;
+        the_current_tok->f_string_line_start = tok->lineno;
+        the_current_tok->f_string_start_offset = -1;
+        the_current_tok->f_string_multi_line_start_offset = -1;
+        the_current_tok->last_expr_buffer = NULL;
+        the_current_tok->last_expr_size = 0;
+        the_current_tok->last_expr_end = -1;
+        the_current_tok->f_string_debug = 0;
+
+        switch (*tok->start) {
+            case 'F':
+            case 'f':
+                the_current_tok->f_string_raw = Py_TOLOWER(*(tok->start + 1)) == 'r';
+                break;
+            case 'R':
+            case 'r':
+                the_current_tok->f_string_raw = 1;
+                break;
+            default:
+                Py_UNREACHABLE();
+        }
+
+        the_current_tok->curly_bracket_depth = 0;
+        the_current_tok->curly_bracket_expr_start_depth = -1;
+        return MAKE_TOKEN(FSTRING_START);
+    }
+
+  letter_quote:
+    /* String */
+    if (c == '\'' || c == '"') {
+        int quote = c;
+        int quote_size = 1;             /* 1 or 3 */
+        int end_quote_size = 0;
+        int has_escaped_quote = 0;
+
+        /* Nodes of type STRING, especially multi line strings
+           must be handled differently in order to get both
+           the starting line number and the column offset right.
+           (cf. issue 16806) */
+        tok->first_lineno = tok->lineno;
+        tok->multi_line_start = tok->line_start;
+
+        /* Find the quote size and start of string */
+        c = tok_nextc(tok);
+        if (c == quote) {
+            c = tok_nextc(tok);
+            if (c == quote) {
+                quote_size = 3;
+            }
+            else {
+                end_quote_size = 1;     /* empty string found */
+            }
+        }
+        if (c != quote) {
+            tok_backup(tok, c);
+        }
+
+        /* Get rest of string */
+        while (end_quote_size != quote_size) {
+            c = tok_nextc(tok);
+            if (tok->done == E_ERROR) {
+                return MAKE_TOKEN(ERRORTOKEN);
+            }
+            if (tok->done == E_DECODE) {
+                break;
+            }
+            if (c == EOF || (quote_size == 1 && c == '\n')) {
+                assert(tok->multi_line_start != NULL);
+                // shift the tok_state's location into
+                // the start of string, and report the error
+                // from the initial quote character
+                tok->cur = (char *)tok->start;
+                tok->cur++;
+                tok->line_start = tok->multi_line_start;
+                int start = tok->lineno;
+                tok->lineno = tok->first_lineno;
+
+                if (INSIDE_FSTRING(tok)) {
+                    /* When we are in an f-string, before raising the
+                     * unterminated string literal error, check whether
+                     * does the initial quote matches with f-strings quotes
+                     * and if it is, then this must be a missing '}' token
+                     * so raise the proper error */
+                    tokenizer_mode *the_current_tok = TOK_GET_MODE(tok);
+                    if (the_current_tok->f_string_quote == quote &&
+                        the_current_tok->f_string_quote_size == quote_size) {
+                        return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: expecting '}'", start));
+                    }
+                }
+
+                if (quote_size == 3) {
+                    _PyTokenizer_syntaxerror(tok, "unterminated triple-quoted string literal"
+                                     " (detected at line %d)", start);
+                    if (c != '\n') {
+                        tok->done = E_EOFS;
+                    }
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+                else {
+                    if (has_escaped_quote) {
+                        _PyTokenizer_syntaxerror(
+                            tok,
+                            "unterminated string literal (detected at line %d); "
+                            "perhaps you escaped the end quote?",
+                            start
+                        );
+                    } else {
+                        _PyTokenizer_syntaxerror(
+                            tok, "unterminated string literal (detected at line %d)", start
+                        );
+                    }
+                    if (c != '\n') {
+                        tok->done = E_EOLS;
+                    }
+                    return MAKE_TOKEN(ERRORTOKEN);
+                }
+            }
+            if (c == quote) {
+                end_quote_size += 1;
+            }
+            else {
+                end_quote_size = 0;
+                if (c == '\\') {
+                    c = tok_nextc(tok);  /* skip escaped char */
+                    if (c == quote) {  /* but record whether the escaped char was a quote */
+                        has_escaped_quote = 1;
+                    }
+                    if (c == '\r') {
+                        c = tok_nextc(tok);
+                    }
+                }
+            }
+        }
+
+        p_start = tok->start;
+        p_end = tok->cur;
+        return MAKE_TOKEN(STRING);
+    }
+
+    /* Line continuation */
+    if (c == '\\') {
+        if ((c = tok_continuation_line(tok)) == -1) {
+            return MAKE_TOKEN(ERRORTOKEN);
+        }
+        tok->cont_line = 1;
+        goto again; /* Read next line */
+    }
+
+    /* Punctuation character */
+    int is_punctuation = (c == ':' || c == '}' || c == '!' || c == '{');
+    if (is_punctuation && INSIDE_FSTRING(tok) && INSIDE_FSTRING_EXPR(current_tok)) {
+        /* This code block gets executed before the curly_bracket_depth is incremented
+         * by the `{` case, so for ensuring that we are on the 0th level, we need
+         * to adjust it manually */
+        int cursor = current_tok->curly_bracket_depth - (c != '{');
+        if (cursor == 0 && !_PyLexer_update_fstring_expr(tok, c)) {
+            return MAKE_TOKEN(ENDMARKER);
+        }
+        if (cursor == 0 && c != '{' && set_fstring_expr(tok, token, c)) {
+            return MAKE_TOKEN(ERRORTOKEN);
+        }
+
+        if (c == ':' && cursor == current_tok->curly_bracket_expr_start_depth) {
+            current_tok->kind = TOK_FSTRING_MODE;
+            p_start = tok->start;
+            p_end = tok->cur;
+            return MAKE_TOKEN(_PyToken_OneChar(c));
+        }
+    }
+
+    /* Check for two-character token */
+    {
+        int c2 = tok_nextc(tok);
+        int current_token = _PyToken_TwoChars(c, c2);
+        if (current_token != OP) {
+            int c3 = tok_nextc(tok);
+            int current_token3 = _PyToken_ThreeChars(c, c2, c3);
+            if (current_token3 != OP) {
+                current_token = current_token3;
+            }
+            else {
+                tok_backup(tok, c3);
+            }
+            p_start = tok->start;
+            p_end = tok->cur;
+            return MAKE_TOKEN(current_token);
+        }
+        tok_backup(tok, c2);
+    }
+
+    /* Keep track of parentheses nesting level */
+    switch (c) {
+    case '(':
+    case '[':
+    case '{':
+        if (tok->level >= MAXLEVEL) {
+            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "too many nested parentheses"));
+        }
+        tok->parenstack[tok->level] = c;
+        tok->parenlinenostack[tok->level] = tok->lineno;
+        tok->parencolstack[tok->level] = (int)(tok->start - tok->line_start);
+        tok->level++;
+        if (INSIDE_FSTRING(tok)) {
+            current_tok->curly_bracket_depth++;
+        }
+        break;
+    case ')':
+    case ']':
+    case '}':
+        if (INSIDE_FSTRING(tok) && !current_tok->curly_bracket_depth && c == '}') {
+            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: single '}' is not allowed"));
+        }
+        if (!tok->tok_extra_tokens && !tok->level) {
+            return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "unmatched '%c'", c));
+        }
+        if (tok->level > 0) {
+            tok->level--;
+            int opening = tok->parenstack[tok->level];
+            if (!tok->tok_extra_tokens && !((opening == '(' && c == ')') ||
+                                            (opening == '[' && c == ']') ||
+                                            (opening == '{' && c == '}'))) {
+                /* If the opening bracket belongs to an f-string's expression
+                part (e.g. f"{)}") and the closing bracket is an arbitrary
+                nested expression, then instead of matching a different
+                syntactical construct with it; we'll throw an unmatched
+                parentheses error. */
+                if (INSIDE_FSTRING(tok) && opening == '{') {
+                    assert(current_tok->curly_bracket_depth >= 0);
+                    int previous_bracket = current_tok->curly_bracket_depth - 1;
+                    if (previous_bracket == current_tok->curly_bracket_expr_start_depth) {
+                        return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: unmatched '%c'", c));
+                    }
+                }
+                if (tok->parenlinenostack[tok->level] != tok->lineno) {
+                    return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok,
+                            "closing parenthesis '%c' does not match "
+                            "opening parenthesis '%c' on line %d",
+                            c, opening, tok->parenlinenostack[tok->level]));
+                }
+                else {
+                    return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok,
+                            "closing parenthesis '%c' does not match "
+                            "opening parenthesis '%c'",
+                            c, opening));
+                }
+            }
+        }
+
+        if (INSIDE_FSTRING(tok)) {
+            current_tok->curly_bracket_depth--;
+            if (c == '}' && current_tok->curly_bracket_depth == current_tok->curly_bracket_expr_start_depth) {
+                current_tok->curly_bracket_expr_start_depth--;
+                current_tok->kind = TOK_FSTRING_MODE;
+                current_tok->f_string_debug = 0;
+            }
+        }
+        break;
+    default:
+        break;
+    }
+
+    if (!Py_UNICODE_ISPRINTABLE(c)) {
+        return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "invalid non-printable character U+%04X", c));
+    }
+
+    if( c == '=' && INSIDE_FSTRING_EXPR(current_tok)) {
+        current_tok->f_string_debug = 1;
+    }
+
+    /* Punctuation character */
+    p_start = tok->start;
+    p_end = tok->cur;
+    return MAKE_TOKEN(_PyToken_OneChar(c));
+}
+
+static int
+tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct token *token)
+{
+    const char *p_start = NULL;
+    const char *p_end = NULL;
+    int end_quote_size = 0;
+    int unicode_escape = 0;
+
+    tok->start = tok->cur;
+    tok->first_lineno = tok->lineno;
+    tok->starting_col_offset = tok->col_offset;
+
+    // If we start with a bracket, we defer to the normal mode as there is nothing for us to tokenize
+    // before it.
+    int start_char = tok_nextc(tok);
+    if (start_char == '{') {
+        int peek1 = tok_nextc(tok);
+        tok_backup(tok, peek1);
+        tok_backup(tok, start_char);
+        if (peek1 != '{') {
+            current_tok->curly_bracket_expr_start_depth++;
+            if (current_tok->curly_bracket_expr_start_depth >= MAX_EXPR_NESTING) {
+                return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: expressions nested too deeply"));
+            }
+            TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+            return tok_get_normal_mode(tok, current_tok, token);
+        }
+    }
+    else {
+        tok_backup(tok, start_char);
+    }
+
+    // Check if we are at the end of the string
+    for (int i = 0; i < current_tok->f_string_quote_size; i++) {
+        int quote = tok_nextc(tok);
+        if (quote != current_tok->f_string_quote) {
+            tok_backup(tok, quote);
+            goto f_string_middle;
+        }
+    }
+
+    if (current_tok->last_expr_buffer != NULL) {
+        PyMem_Free(current_tok->last_expr_buffer);
+        current_tok->last_expr_buffer = NULL;
+        current_tok->last_expr_size = 0;
+        current_tok->last_expr_end = -1;
+    }
+
+    p_start = tok->start;
+    p_end = tok->cur;
+    tok->tok_mode_stack_index--;
+    return MAKE_TOKEN(FSTRING_END);
+
+f_string_middle:
+
+    // TODO: This is a bit of a hack, but it works for now. We need to find a better way to handle
+    // this.
+    tok->multi_line_start = tok->line_start;
+    while (end_quote_size != current_tok->f_string_quote_size) {
+        int c = tok_nextc(tok);
+        if (tok->done == E_ERROR) {
+            return MAKE_TOKEN(ERRORTOKEN);
+        }
+        int in_format_spec = (
+                current_tok->last_expr_end != -1
+                &&
+                INSIDE_FSTRING_EXPR(current_tok)
+        );
+
+       if (c == EOF || (current_tok->f_string_quote_size == 1 && c == '\n')) {
+            if (tok->decoding_erred) {
+                return MAKE_TOKEN(ERRORTOKEN);
+            }
+
+            // If we are in a format spec and we found a newline,
+            // it means that the format spec ends here and we should
+            // return to the regular mode.
+            if (in_format_spec && c == '\n') {
+                tok_backup(tok, c);
+                TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+                p_start = tok->start;
+                p_end = tok->cur;
+                return MAKE_TOKEN(FSTRING_MIDDLE);
+            }
+
+            assert(tok->multi_line_start != NULL);
+            // shift the tok_state's location into
+            // the start of string, and report the error
+            // from the initial quote character
+            tok->cur = (char *)current_tok->f_string_start;
+            tok->cur++;
+            tok->line_start = current_tok->f_string_multi_line_start;
+            int start = tok->lineno;
+
+            tokenizer_mode *the_current_tok = TOK_GET_MODE(tok);
+            tok->lineno = the_current_tok->f_string_line_start;
+
+            if (current_tok->f_string_quote_size == 3) {
+                return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok,
+                                    "unterminated triple-quoted f-string literal"
+                                    " (detected at line %d)", start));
+            }
+            else {
+                return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok,
+                                    "unterminated f-string literal (detected at"
+                                    " line %d)", start));
+            }
+        }
+
+        if (c == current_tok->f_string_quote) {
+            end_quote_size += 1;
+            continue;
+        } else {
+            end_quote_size = 0;
+        }
+
+        if (c == '{') {
+            int peek = tok_nextc(tok);
+            if (peek != '{' || in_format_spec) {
+                tok_backup(tok, peek);
+                tok_backup(tok, c);
+                current_tok->curly_bracket_expr_start_depth++;
+                if (current_tok->curly_bracket_expr_start_depth >= MAX_EXPR_NESTING) {
+                    return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: expressions nested too deeply"));
+                }
+                TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+                p_start = tok->start;
+                p_end = tok->cur;
+            } else {
+                p_start = tok->start;
+                p_end = tok->cur - 1;
+            }
+            return MAKE_TOKEN(FSTRING_MIDDLE);
+        } else if (c == '}') {
+            if (unicode_escape) {
+                p_start = tok->start;
+                p_end = tok->cur;
+                return MAKE_TOKEN(FSTRING_MIDDLE);
+            }
+            int peek = tok_nextc(tok);
+
+            // The tokenizer can only be in the format spec if we have already completed the expression
+            // scanning (indicated by the end of the expression being set) and we are not at the top level
+            // of the bracket stack (-1 is the top level). Since format specifiers can't legally use double
+            // brackets, we can bypass it here.
+            if (peek == '}' && !in_format_spec) {
+                p_start = tok->start;
+                p_end = tok->cur - 1;
+            } else {
+                tok_backup(tok, peek);
+                tok_backup(tok, c);
+                TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+                p_start = tok->start;
+                p_end = tok->cur;
+            }
+            return MAKE_TOKEN(FSTRING_MIDDLE);
+        } else if (c == '\\') {
+            int peek = tok_nextc(tok);
+            if (peek == '\r') {
+                peek = tok_nextc(tok);
+            }
+            // Special case when the backslash is right before a curly
+            // brace. We have to restore and return the control back
+            // to the loop for the next iteration.
+            if (peek == '{' || peek == '}') {
+                if (!current_tok->f_string_raw) {
+                    if (_PyTokenizer_warn_invalid_escape_sequence(tok, peek)) {
+                        return MAKE_TOKEN(ERRORTOKEN);
+                    }
+                }
+                tok_backup(tok, peek);
+                continue;
+            }
+
+            if (!current_tok->f_string_raw) {
+                if (peek == 'N') {
+                    /* Handle named unicode escapes (\N{BULLET}) */
+                    peek = tok_nextc(tok);
+                    if (peek == '{') {
+                        unicode_escape = 1;
+                    } else {
+                        tok_backup(tok, peek);
+                    }
+                }
+            } /* else {
+                skip the escaped character
+            }*/
+        }
+    }
+
+    // Backup the f-string quotes to emit a final FSTRING_MIDDLE and
+    // add the quotes to the FSTRING_END in the next tokenizer iteration.
+    for (int i = 0; i < current_tok->f_string_quote_size; i++) {
+        tok_backup(tok, current_tok->f_string_quote);
+    }
+    p_start = tok->start;
+    p_end = tok->cur;
+    return MAKE_TOKEN(FSTRING_MIDDLE);
+}
+
+static int
+tok_get(struct tok_state *tok, struct token *token)
+{
+    tokenizer_mode *current_tok = TOK_GET_MODE(tok);
+    if (current_tok->kind == TOK_REGULAR_MODE) {
+        return tok_get_normal_mode(tok, current_tok, token);
+    } else {
+        return tok_get_fstring_mode(tok, current_tok, token);
+    }
+}
+
+int
+_PyTokenizer_Get(struct tok_state *tok, struct token *token)
+{
+    int result = tok_get(tok, token);
+    if (tok->decoding_erred) {
+        result = ERRORTOKEN;
+        tok->done = E_DECODE;
+    }
+    return result;
+}
diff --git a/Parser/lexer/lexer.h b/Parser/lexer/lexer.h
new file mode 100644
index 00000000000000..7f21bf56bba2d1
--- /dev/null
+++ b/Parser/lexer/lexer.h
@@ -0,0 +1,10 @@
+#ifndef _PY_LEXER_LEXER_H_
+#define _PY_LEXER_LEXER_H_
+
+#include "state.h"
+
+int _PyLexer_update_fstring_expr(struct tok_state *tok, char cur);
+
+int _PyTokenizer_Get(struct tok_state *, struct token *);
+
+#endif
diff --git a/Parser/lexer/state.c b/Parser/lexer/state.c
new file mode 100644
index 00000000000000..653ddafd411095
--- /dev/null
+++ b/Parser/lexer/state.c
@@ -0,0 +1,149 @@
+#include "Python.h"
+#include "pycore_pystate.h"
+#include "pycore_token.h"
+#include "errcode.h"
+
+#include "state.h"
+
+/* Never change this */
+#define TABSIZE 8
+
+/* Create and initialize a new tok_state structure */
+struct tok_state *
+_PyTokenizer_tok_new(void)
+{
+    struct tok_state *tok = (struct tok_state *)PyMem_Malloc(
+                                            sizeof(struct tok_state));
+    if (tok == NULL)
+        return NULL;
+    tok->buf = tok->cur = tok->inp = NULL;
+    tok->fp_interactive = 0;
+    tok->interactive_src_start = NULL;
+    tok->interactive_src_end = NULL;
+    tok->start = NULL;
+    tok->end = NULL;
+    tok->done = E_OK;
+    tok->fp = NULL;
+    tok->input = NULL;
+    tok->tabsize = TABSIZE;
+    tok->indent = 0;
+    tok->indstack[0] = 0;
+    tok->atbol = 1;
+    tok->pendin = 0;
+    tok->prompt = tok->nextprompt = NULL;
+    tok->lineno = 0;
+    tok->starting_col_offset = -1;
+    tok->col_offset = -1;
+    tok->level = 0;
+    tok->altindstack[0] = 0;
+    tok->decoding_state = STATE_INIT;
+    tok->decoding_erred = 0;
+    tok->enc = NULL;
+    tok->encoding = NULL;
+    tok->cont_line = 0;
+    tok->filename = NULL;
+    tok->decoding_readline = NULL;
+    tok->decoding_buffer = NULL;
+    tok->readline = NULL;
+    tok->type_comments = 0;
+    tok->interactive_underflow = IUNDERFLOW_NORMAL;
+    tok->underflow = NULL;
+    tok->str = NULL;
+    tok->report_warnings = 1;
+    tok->tok_extra_tokens = 0;
+    tok->comment_newline = 0;
+    tok->implicit_newline = 0;
+    tok->tok_mode_stack[0] = (tokenizer_mode){.kind =TOK_REGULAR_MODE, .f_string_quote='\0', .f_string_quote_size = 0, .f_string_debug=0};
+    tok->tok_mode_stack_index = 0;
+#ifdef Py_DEBUG
+    tok->debug = _Py_GetConfig()->parser_debug;
+#endif
+    return tok;
+}
+
+static void
+free_fstring_expressions(struct tok_state *tok)
+{
+    int index;
+    tokenizer_mode *mode;
+
+    for (index = tok->tok_mode_stack_index; index >= 0; --index) {
+        mode = &(tok->tok_mode_stack[index]);
+        if (mode->last_expr_buffer != NULL) {
+            PyMem_Free(mode->last_expr_buffer);
+            mode->last_expr_buffer = NULL;
+            mode->last_expr_size = 0;
+            mode->last_expr_end = -1;
+        }
+    }
+}
+
+/* Free a tok_state structure */
+void
+_PyTokenizer_Free(struct tok_state *tok)
+{
+    if (tok->encoding != NULL) {
+        PyMem_Free(tok->encoding);
+    }
+    Py_XDECREF(tok->decoding_readline);
+    Py_XDECREF(tok->decoding_buffer);
+    Py_XDECREF(tok->readline);
+    Py_XDECREF(tok->filename);
+    if ((tok->readline != NULL || tok->fp != NULL ) && tok->buf != NULL) {
+        PyMem_Free(tok->buf);
+    }
+    if (tok->input) {
+        PyMem_Free(tok->input);
+    }
+    if (tok->interactive_src_start != NULL) {
+        PyMem_Free(tok->interactive_src_start);
+    }
+    free_fstring_expressions(tok);
+    PyMem_Free(tok);
+}
+
+void
+_PyToken_Free(struct token *token) {
+    Py_XDECREF(token->metadata);
+}
+
+void
+_PyToken_Init(struct token *token) {
+    token->metadata = NULL;
+}
+
+int
+_PyLexer_type_comment_token_setup(struct tok_state *tok, struct token *token, int type, int col_offset,
+                         int end_col_offset, const char *start, const char *end)
+{
+    token->level = tok->level;
+    token->lineno = token->end_lineno = tok->lineno;
+    token->col_offset = col_offset;
+    token->end_col_offset = end_col_offset;
+    token->start = start;
+    token->end = end;
+    return type;
+}
+
+int
+_PyLexer_token_setup(struct tok_state *tok, struct token *token, int type, const char *start, const char *end)
+{
+    assert((start == NULL && end == NULL) || (start != NULL && end != NULL));
+    token->level = tok->level;
+    if (ISSTRINGLIT(type)) {
+        token->lineno = tok->first_lineno;
+    }
+    else {
+        token->lineno = tok->lineno;
+    }
+    token->end_lineno = tok->lineno;
+    token->col_offset = token->end_col_offset = -1;
+    token->start = start;
+    token->end = end;
+
+    if (start != NULL && end != NULL) {
+        token->col_offset = tok->starting_col_offset;
+        token->end_col_offset = tok->col_offset;
+    }
+    return type;
+}
diff --git a/Parser/lexer/state.h b/Parser/lexer/state.h
new file mode 100644
index 00000000000000..61d090d6d2fe21
--- /dev/null
+++ b/Parser/lexer/state.h
@@ -0,0 +1,141 @@
+#ifndef _PY_LEXER_H_
+#define _PY_LEXER_H_
+
+#include "object.h"
+
+#define MAXINDENT 100       /* Max indentation level */
+#define MAXLEVEL 200        /* Max parentheses level */
+#define MAXFSTRINGLEVEL 150 /* Max f-string nesting level */
+
+#define INSIDE_FSTRING(tok) (tok->tok_mode_stack_index > 0)
+#define INSIDE_FSTRING_EXPR(tok) (tok->curly_bracket_expr_start_depth >= 0)
+
+enum decoding_state {
+    STATE_INIT,
+    STATE_SEEK_CODING,
+    STATE_NORMAL
+};
+
+enum interactive_underflow_t {
+    /* Normal mode of operation: return a new token when asked in interactive mode */
+    IUNDERFLOW_NORMAL,
+    /* Forcefully return ENDMARKER when asked for a new token in interactive mode. This
+     * can be used to prevent the tokenizer to prompt the user for new tokens */
+    IUNDERFLOW_STOP,
+};
+
+struct token {
+    int level;
+    int lineno, col_offset, end_lineno, end_col_offset;
+    const char *start, *end;
+    PyObject *metadata;
+};
+
+enum tokenizer_mode_kind_t {
+    TOK_REGULAR_MODE,
+    TOK_FSTRING_MODE,
+};
+
+#define MAX_EXPR_NESTING 3
+
+typedef struct _tokenizer_mode {
+    enum tokenizer_mode_kind_t kind;
+
+    int curly_bracket_depth;
+    int curly_bracket_expr_start_depth;
+
+    char f_string_quote;
+    int f_string_quote_size;
+    int f_string_raw;
+    const char* f_string_start;
+    const char* f_string_multi_line_start;
+    int f_string_line_start;
+
+    Py_ssize_t f_string_start_offset;
+    Py_ssize_t f_string_multi_line_start_offset;
+
+    Py_ssize_t last_expr_size;
+    Py_ssize_t last_expr_end;
+    char* last_expr_buffer;
+    int f_string_debug;
+} tokenizer_mode;
+
+/* Tokenizer state */
+struct tok_state {
+    /* Input state; buf <= cur <= inp <= end */
+    /* NB an entire line is held in the buffer */
+    char *buf;          /* Input buffer, or NULL; malloc'ed if fp != NULL or readline != NULL */
+    char *cur;          /* Next character in buffer */
+    char *inp;          /* End of data in buffer */
+    int fp_interactive; /* If the file descriptor is interactive */
+    char *interactive_src_start; /* The start of the source parsed so far in interactive mode */
+    char *interactive_src_end; /* The end of the source parsed so far in interactive mode */
+    const char *end;    /* End of input buffer if buf != NULL */
+    const char *start;  /* Start of current token if not NULL */
+    int done;           /* E_OK normally, E_EOF at EOF, otherwise error code */
+    /* NB If done != E_OK, cur must be == inp!!! */
+    FILE *fp;           /* Rest of input; NULL if tokenizing a string */
+    int tabsize;        /* Tab spacing */
+    int indent;         /* Current indentation index */
+    int indstack[MAXINDENT];            /* Stack of indents */
+    int atbol;          /* Nonzero if at begin of new line */
+    int pendin;         /* Pending indents (if > 0) or dedents (if < 0) */
+    const char *prompt, *nextprompt;          /* For interactive prompting */
+    int lineno;         /* Current line number */
+    int first_lineno;   /* First line of a single line or multi line string
+                           expression (cf. issue 16806) */
+    int starting_col_offset; /* The column offset at the beginning of a token */
+    int col_offset;     /* Current col offset */
+    int level;          /* () [] {} Parentheses nesting level */
+            /* Used to allow free continuations inside them */
+    char parenstack[MAXLEVEL];
+    int parenlinenostack[MAXLEVEL];
+    int parencolstack[MAXLEVEL];
+    PyObject *filename;
+    /* Stuff for checking on different tab sizes */
+    int altindstack[MAXINDENT];         /* Stack of alternate indents */
+    /* Stuff for PEP 0263 */
+    enum decoding_state decoding_state;
+    int decoding_erred;         /* whether erred in decoding  */
+    char *encoding;         /* Source encoding. */
+    int cont_line;          /* whether we are in a continuation line. */
+    const char* line_start;     /* pointer to start of current line */
+    const char* multi_line_start; /* pointer to start of first line of
+                                     a single line or multi line string
+                                     expression (cf. issue 16806) */
+    PyObject *decoding_readline; /* open(...).readline */
+    PyObject *decoding_buffer;
+    PyObject *readline;     /* readline() function */
+    const char* enc;        /* Encoding for the current str. */
+    char* str;          /* Source string being tokenized (if tokenizing from a string)*/
+    char* input;       /* Tokenizer's newline translated copy of the string. */
+
+    int type_comments;      /* Whether to look for type comments */
+
+    /* How to proceed when asked for a new token in interactive mode */
+    enum interactive_underflow_t interactive_underflow;
+    int (*underflow)(struct tok_state *); /* Function to call when buffer is empty and we need to refill it*/
+
+    int report_warnings;
+    // TODO: Factor this into its own thing
+    tokenizer_mode tok_mode_stack[MAXFSTRINGLEVEL];
+    int tok_mode_stack_index;
+    int tok_extra_tokens;
+    int comment_newline;
+    int implicit_newline;
+#ifdef Py_DEBUG
+    int debug;
+#endif
+};
+
+int _PyLexer_type_comment_token_setup(struct tok_state *tok, struct token *token, int type, int col_offset,
+                         int end_col_offset, const char *start, const char *end);
+int _PyLexer_token_setup(struct tok_state *tok, struct token *token, int type, const char *start, const char *end);
+
+struct tok_state *_PyTokenizer_tok_new(void);
+void _PyTokenizer_Free(struct tok_state *);
+void _PyToken_Free(struct token *);
+void _PyToken_Init(struct token *);
+
+
+#endif
diff --git a/Parser/myreadline.c b/Parser/myreadline.c
index 3f0e29f051a438..1825665354844b 100644
--- a/Parser/myreadline.c
+++ b/Parser/myreadline.c
@@ -1,5 +1,5 @@
 
-/* Readline interface for tokenizer.c and [raw_]input() in bltinmodule.c.
+/* Readline interface for the tokenizer and [raw_]input() in bltinmodule.c.
    By default, or when stdin is not a tty device, we have a super
    simple my_readline function using fgets.
    Optionally, we can use the GNU readline library.
@@ -14,13 +14,19 @@
 #include "pycore_pystate.h"   // _PyThreadState_GET()
 #ifdef MS_WINDOWS
 #  ifndef WIN32_LEAN_AND_MEAN
-#  define WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
 #  endif
 #  include "windows.h"
 #endif /* MS_WINDOWS */
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // isatty()
+#endif
+
 
-PyThreadState* _PyOS_ReadlineTState = NULL;
+// Export the symbol since it's used by the readline shared extension
+PyAPI_DATA(PyThreadState*) _PyOS_ReadlineTState;
+PyThreadState *_PyOS_ReadlineTState = NULL;
 
 static PyThread_type_lock _PyOS_ReadlineLock = NULL;
 
@@ -45,7 +51,10 @@ my_fgets(PyThreadState* tstate, char *buf, int len, FILE *fp)
 #endif
 
     while (1) {
-        if (PyOS_InputHook != NULL) {
+        if (PyOS_InputHook != NULL &&
+            // GH-104668: See PyOS_ReadlineFunctionPointer's comment below...
+            _Py_IsMainInterpreter(tstate->interp))
+        {
             (void)(PyOS_InputHook)();
         }
 
@@ -131,7 +140,10 @@ _PyOS_WindowsConsoleReadline(PyThreadState *tstate, HANDLE hStdIn)
     wbuf = wbuf_local;
     wbuflen = sizeof(wbuf_local) / sizeof(wbuf_local[0]) - 1;
     while (1) {
-        if (PyOS_InputHook != NULL) {
+        if (PyOS_InputHook != NULL &&
+            // GH-104668: See PyOS_ReadlineFunctionPointer's comment below...
+            _Py_IsMainInterpreter(tstate->interp))
+        {
             (void)(PyOS_InputHook)();
         }
         if (!ReadConsoleW(hStdIn, &wbuf[total_read], wbuflen - total_read, &n_read, NULL)) {
@@ -352,7 +364,7 @@ PyOS_StdioReadline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
 char *(*PyOS_ReadlineFunctionPointer)(FILE *, FILE *, const char *) = NULL;
 
 
-/* Interface used by tokenizer.c and bltinmodule.c */
+/* Interface used by file_tokenizer.c and bltinmodule.c */
 
 char *
 PyOS_Readline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
@@ -389,11 +401,23 @@ PyOS_Readline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
      * a tty.  This can happen, for example if python is run like
      * this: python -i < test1.py
      */
-    if (!isatty (fileno (sys_stdin)) || !isatty (fileno (sys_stdout)))
-        rv = PyOS_StdioReadline (sys_stdin, sys_stdout, prompt);
-    else
-        rv = (*PyOS_ReadlineFunctionPointer)(sys_stdin, sys_stdout,
-                                             prompt);
+    if (!isatty(fileno(sys_stdin)) || !isatty(fileno(sys_stdout)) ||
+        // GH-104668: Don't call global callbacks like PyOS_InputHook or
+        // PyOS_ReadlineFunctionPointer from subinterpreters, since it seems
+        // like there's no good way for users (like readline and tkinter) to
+        // avoid using global state to manage them. Plus, we generally don't
+        // want to cause trouble for libraries that don't know/care about
+        // subinterpreter support. If libraries really need better APIs that
+        // work per-interpreter and have ways to access module state, we can
+        // certainly add them later (but for now we'll cross our fingers and
+        // hope that nobody actually cares):
+        !_Py_IsMainInterpreter(tstate->interp))
+    {
+        rv = PyOS_StdioReadline(sys_stdin, sys_stdout, prompt);
+    }
+    else {
+        rv = (*PyOS_ReadlineFunctionPointer)(sys_stdin, sys_stdout, prompt);
+    }
     Py_END_ALLOW_THREADS
 
     PyThread_release_lock(_PyOS_ReadlineLock);
diff --git a/Parser/parser.c b/Parser/parser.c
index 6eb985a7d3e123..9006efb09a59fa 100644
--- a/Parser/parser.c
+++ b/Parser/parser.c
@@ -8,7 +8,11 @@
 #endif
 
 #ifdef __wasi__
-#  define MAXSTACK 4000
+#  ifdef Py_DEBUG
+#    define MAXSTACK 1000
+#  else
+#    define MAXSTACK 4000
+#  endif
 #else
 #  define MAXSTACK 6000
 #endif
@@ -17,57 +21,59 @@ static KeywordToken *reserved_keywords[] = {
     (KeywordToken[]) {{NULL, -1}},
     (KeywordToken[]) {{NULL, -1}},
     (KeywordToken[]) {
-        {"if", 642},
-        {"as", 640},
-        {"in", 651},
-        {"or", 574},
-        {"is", 582},
+        {"if", 658},
+        {"as", 656},
+        {"in", 669},
+        {"or", 581},
+        {"is", 589},
         {NULL, -1},
     },
     (KeywordToken[]) {
-        {"del", 604},
-        {"def", 652},
-        {"for", 650},
-        {"try", 624},
-        {"and", 575},
-        {"not", 581},
+        {"del", 613},
+        {"def", 671},
+        {"for", 668},
+        {"try", 640},
+        {"and", 582},
+        {"not", 588},
         {NULL, -1},
     },
     (KeywordToken[]) {
-        {"from", 608},
+        {"from", 618},
         {"pass", 504},
-        {"with", 615},
-        {"elif", 644},
-        {"else", 645},
-        {"None", 602},
-        {"True", 601},
+        {"with", 631},
+        {"elif", 660},
+        {"else", 661},
+        {"None", 611},
+        {"True", 610},
         {NULL, -1},
     },
     (KeywordToken[]) {
-        {"raise", 522},
-        {"yield", 573},
+        {"raise", 525},
+        {"yield", 580},
         {"break", 508},
-        {"class", 654},
-        {"while", 647},
-        {"False", 603},
+        {"async", 670},
+        {"class", 673},
+        {"while", 663},
+        {"False", 612},
+        {"await", 590},
         {NULL, -1},
     },
     (KeywordToken[]) {
-        {"return", 519},
-        {"import", 607},
-        {"assert", 526},
-        {"global", 523},
-        {"except", 637},
-        {"lambda", 600},
+        {"return", 522},
+        {"import", 617},
+        {"assert", 529},
+        {"global", 526},
+        {"except", 653},
+        {"lambda", 609},
         {NULL, -1},
     },
     (KeywordToken[]) {
-        {"finally", 633},
+        {"finally", 649},
         {NULL, -1},
     },
     (KeywordToken[]) {
         {"continue", 509},
-        {"nonlocal", 524},
+        {"nonlocal", 527},
         {NULL, -1},
     },
 };
@@ -75,525 +81,540 @@ static char *soft_keywords[] = {
     "_",
     "case",
     "match",
+    "type",
     NULL,
 };
 #define file_type 1000
 #define interactive_type 1001
 #define eval_type 1002
 #define func_type_type 1003
-#define fstring_type 1004
-#define statements_type 1005
-#define statement_type 1006
-#define statement_newline_type 1007
-#define simple_stmts_type 1008
-#define simple_stmt_type 1009
-#define compound_stmt_type 1010
-#define assignment_type 1011
-#define annotated_rhs_type 1012
-#define augassign_type 1013
-#define return_stmt_type 1014
-#define raise_stmt_type 1015
-#define global_stmt_type 1016
-#define nonlocal_stmt_type 1017
-#define del_stmt_type 1018
-#define yield_stmt_type 1019
-#define assert_stmt_type 1020
-#define import_stmt_type 1021
-#define import_name_type 1022
-#define import_from_type 1023
-#define import_from_targets_type 1024
-#define import_from_as_names_type 1025
-#define import_from_as_name_type 1026
-#define dotted_as_names_type 1027
-#define dotted_as_name_type 1028
-#define dotted_name_type 1029  // Left-recursive
-#define block_type 1030
-#define decorators_type 1031
-#define class_def_type 1032
-#define class_def_raw_type 1033
-#define function_def_type 1034
-#define function_def_raw_type 1035
-#define params_type 1036
-#define parameters_type 1037
-#define slash_no_default_type 1038
-#define slash_with_default_type 1039
-#define star_etc_type 1040
-#define kwds_type 1041
-#define param_no_default_type 1042
-#define param_no_default_star_annotation_type 1043
-#define param_with_default_type 1044
-#define param_maybe_default_type 1045
-#define param_type 1046
-#define param_star_annotation_type 1047
-#define annotation_type 1048
-#define star_annotation_type 1049
-#define default_type 1050
-#define if_stmt_type 1051
-#define elif_stmt_type 1052
-#define else_block_type 1053
-#define while_stmt_type 1054
-#define for_stmt_type 1055
-#define with_stmt_type 1056
-#define with_item_type 1057
-#define try_stmt_type 1058
-#define except_block_type 1059
-#define except_star_block_type 1060
-#define finally_block_type 1061
-#define match_stmt_type 1062
-#define subject_expr_type 1063
-#define case_block_type 1064
-#define guard_type 1065
-#define patterns_type 1066
-#define pattern_type 1067
-#define as_pattern_type 1068
-#define or_pattern_type 1069
-#define closed_pattern_type 1070
-#define literal_pattern_type 1071
-#define literal_expr_type 1072
-#define complex_number_type 1073
-#define signed_number_type 1074
-#define signed_real_number_type 1075
-#define real_number_type 1076
-#define imaginary_number_type 1077
-#define capture_pattern_type 1078
-#define pattern_capture_target_type 1079
-#define wildcard_pattern_type 1080
-#define value_pattern_type 1081
-#define attr_type 1082  // Left-recursive
-#define name_or_attr_type 1083  // Left-recursive
-#define group_pattern_type 1084
-#define sequence_pattern_type 1085
-#define open_sequence_pattern_type 1086
-#define maybe_sequence_pattern_type 1087
-#define maybe_star_pattern_type 1088
-#define star_pattern_type 1089
-#define mapping_pattern_type 1090
-#define items_pattern_type 1091
-#define key_value_pattern_type 1092
-#define double_star_pattern_type 1093
-#define class_pattern_type 1094
-#define positional_patterns_type 1095
-#define keyword_patterns_type 1096
-#define keyword_pattern_type 1097
-#define expressions_type 1098
-#define expression_type 1099
-#define yield_expr_type 1100
-#define star_expressions_type 1101
-#define star_expression_type 1102
-#define star_named_expressions_type 1103
-#define star_named_expression_type 1104
-#define assignment_expression_type 1105
-#define named_expression_type 1106
-#define disjunction_type 1107
-#define conjunction_type 1108
-#define inversion_type 1109
-#define comparison_type 1110
-#define compare_op_bitwise_or_pair_type 1111
-#define eq_bitwise_or_type 1112
-#define noteq_bitwise_or_type 1113
-#define lte_bitwise_or_type 1114
-#define lt_bitwise_or_type 1115
-#define gte_bitwise_or_type 1116
-#define gt_bitwise_or_type 1117
-#define notin_bitwise_or_type 1118
-#define in_bitwise_or_type 1119
-#define isnot_bitwise_or_type 1120
-#define is_bitwise_or_type 1121
-#define bitwise_or_type 1122  // Left-recursive
-#define bitwise_xor_type 1123  // Left-recursive
-#define bitwise_and_type 1124  // Left-recursive
-#define shift_expr_type 1125  // Left-recursive
-#define sum_type 1126  // Left-recursive
-#define term_type 1127  // Left-recursive
-#define factor_type 1128
-#define power_type 1129
-#define await_primary_type 1130
-#define primary_type 1131  // Left-recursive
-#define slices_type 1132
-#define slice_type 1133
-#define atom_type 1134
-#define group_type 1135
-#define lambdef_type 1136
-#define lambda_params_type 1137
-#define lambda_parameters_type 1138
-#define lambda_slash_no_default_type 1139
-#define lambda_slash_with_default_type 1140
-#define lambda_star_etc_type 1141
-#define lambda_kwds_type 1142
-#define lambda_param_no_default_type 1143
-#define lambda_param_with_default_type 1144
-#define lambda_param_maybe_default_type 1145
-#define lambda_param_type 1146
-#define fstring_middle_type 1147
-#define fstring_replacement_field_type 1148
-#define fstring_conversion_type 1149
-#define fstring_full_format_spec_type 1150
-#define fstring_format_spec_type 1151
-#define string_type 1152
-#define strings_type 1153
-#define list_type 1154
-#define tuple_type 1155
-#define set_type 1156
-#define dict_type 1157
-#define double_starred_kvpairs_type 1158
-#define double_starred_kvpair_type 1159
-#define kvpair_type 1160
-#define for_if_clauses_type 1161
-#define for_if_clause_type 1162
-#define listcomp_type 1163
-#define setcomp_type 1164
-#define genexp_type 1165
-#define dictcomp_type 1166
-#define arguments_type 1167
-#define args_type 1168
-#define kwargs_type 1169
-#define starred_expression_type 1170
-#define kwarg_or_starred_type 1171
-#define kwarg_or_double_starred_type 1172
-#define star_targets_type 1173
-#define star_targets_list_seq_type 1174
-#define star_targets_tuple_seq_type 1175
-#define star_target_type 1176
-#define target_with_star_atom_type 1177
-#define star_atom_type 1178
-#define single_target_type 1179
-#define single_subscript_attribute_target_type 1180
-#define t_primary_type 1181  // Left-recursive
-#define t_lookahead_type 1182
-#define del_targets_type 1183
-#define del_target_type 1184
-#define del_t_atom_type 1185
-#define type_expressions_type 1186
-#define func_type_comment_type 1187
-#define invalid_arguments_type 1188
-#define invalid_kwarg_type 1189
-#define expression_without_invalid_type 1190
-#define invalid_legacy_expression_type 1191
-#define invalid_expression_type 1192
-#define invalid_named_expression_type 1193
-#define invalid_assignment_type 1194
-#define invalid_ann_assign_target_type 1195
-#define invalid_del_stmt_type 1196
-#define invalid_block_type 1197
-#define invalid_comprehension_type 1198
-#define invalid_dict_comprehension_type 1199
-#define invalid_parameters_type 1200
-#define invalid_default_type 1201
-#define invalid_star_etc_type 1202
-#define invalid_kwds_type 1203
-#define invalid_parameters_helper_type 1204
-#define invalid_lambda_parameters_type 1205
-#define invalid_lambda_parameters_helper_type 1206
-#define invalid_lambda_star_etc_type 1207
-#define invalid_lambda_kwds_type 1208
-#define invalid_double_type_comments_type 1209
-#define invalid_with_item_type 1210
-#define invalid_for_target_type 1211
-#define invalid_group_type 1212
-#define invalid_import_type 1213
-#define invalid_import_from_targets_type 1214
-#define invalid_with_stmt_type 1215
-#define invalid_with_stmt_indent_type 1216
-#define invalid_try_stmt_type 1217
-#define invalid_except_stmt_type 1218
-#define invalid_finally_stmt_type 1219
-#define invalid_except_stmt_indent_type 1220
-#define invalid_except_star_stmt_indent_type 1221
-#define invalid_match_stmt_type 1222
-#define invalid_case_block_type 1223
-#define invalid_as_pattern_type 1224
-#define invalid_class_pattern_type 1225
-#define invalid_class_argument_pattern_type 1226
-#define invalid_if_stmt_type 1227
-#define invalid_elif_stmt_type 1228
-#define invalid_else_stmt_type 1229
-#define invalid_while_stmt_type 1230
-#define invalid_for_stmt_type 1231
-#define invalid_def_raw_type 1232
-#define invalid_class_def_raw_type 1233
-#define invalid_double_starred_kvpairs_type 1234
-#define invalid_kvpair_type 1235
-#define invalid_starred_expression_type 1236
-#define invalid_replacement_field_type 1237
-#define invalid_conversion_character_type 1238
-#define _loop0_1_type 1239
-#define _loop0_2_type 1240
-#define _loop0_3_type 1241
-#define _loop1_4_type 1242
-#define _loop0_6_type 1243
-#define _gather_5_type 1244
-#define _tmp_7_type 1245
-#define _tmp_8_type 1246
-#define _tmp_9_type 1247
-#define _tmp_10_type 1248
-#define _tmp_11_type 1249
-#define _tmp_12_type 1250
-#define _tmp_13_type 1251
-#define _tmp_14_type 1252
-#define _loop1_15_type 1253
-#define _tmp_16_type 1254
-#define _tmp_17_type 1255
-#define _tmp_18_type 1256
-#define _loop0_20_type 1257
-#define _gather_19_type 1258
-#define _loop0_22_type 1259
-#define _gather_21_type 1260
-#define _tmp_23_type 1261
-#define _tmp_24_type 1262
-#define _loop0_25_type 1263
-#define _loop1_26_type 1264
-#define _loop0_28_type 1265
-#define _gather_27_type 1266
-#define _tmp_29_type 1267
-#define _loop0_31_type 1268
-#define _gather_30_type 1269
-#define _tmp_32_type 1270
-#define _loop1_33_type 1271
-#define _tmp_34_type 1272
-#define _tmp_35_type 1273
-#define _tmp_36_type 1274
-#define _loop0_37_type 1275
-#define _loop0_38_type 1276
-#define _loop0_39_type 1277
-#define _loop1_40_type 1278
-#define _loop0_41_type 1279
-#define _loop1_42_type 1280
-#define _loop1_43_type 1281
-#define _loop1_44_type 1282
-#define _loop0_45_type 1283
-#define _loop1_46_type 1284
-#define _loop0_47_type 1285
-#define _loop1_48_type 1286
-#define _loop0_49_type 1287
-#define _loop0_50_type 1288
-#define _loop1_51_type 1289
-#define _loop0_53_type 1290
-#define _gather_52_type 1291
-#define _loop0_55_type 1292
-#define _gather_54_type 1293
-#define _loop0_57_type 1294
-#define _gather_56_type 1295
-#define _loop0_59_type 1296
-#define _gather_58_type 1297
-#define _tmp_60_type 1298
-#define _loop1_61_type 1299
-#define _loop1_62_type 1300
-#define _tmp_63_type 1301
-#define _tmp_64_type 1302
-#define _loop1_65_type 1303
-#define _loop0_67_type 1304
-#define _gather_66_type 1305
-#define _tmp_68_type 1306
-#define _tmp_69_type 1307
-#define _tmp_70_type 1308
-#define _tmp_71_type 1309
-#define _loop0_73_type 1310
-#define _gather_72_type 1311
-#define _loop0_75_type 1312
-#define _gather_74_type 1313
-#define _tmp_76_type 1314
-#define _loop0_78_type 1315
-#define _gather_77_type 1316
-#define _loop0_80_type 1317
-#define _gather_79_type 1318
-#define _loop1_81_type 1319
-#define _loop1_82_type 1320
-#define _loop0_84_type 1321
-#define _gather_83_type 1322
-#define _loop1_85_type 1323
-#define _loop1_86_type 1324
-#define _loop1_87_type 1325
-#define _tmp_88_type 1326
-#define _loop0_90_type 1327
-#define _gather_89_type 1328
-#define _tmp_91_type 1329
-#define _tmp_92_type 1330
-#define _tmp_93_type 1331
-#define _tmp_94_type 1332
-#define _tmp_95_type 1333
-#define _tmp_96_type 1334
-#define _loop0_97_type 1335
-#define _loop0_98_type 1336
-#define _loop0_99_type 1337
-#define _loop1_100_type 1338
-#define _loop0_101_type 1339
-#define _loop1_102_type 1340
-#define _loop1_103_type 1341
-#define _loop1_104_type 1342
-#define _loop0_105_type 1343
-#define _loop1_106_type 1344
-#define _loop0_107_type 1345
-#define _loop1_108_type 1346
-#define _loop0_109_type 1347
-#define _loop1_110_type 1348
-#define _tmp_111_type 1349
-#define _loop0_112_type 1350
-#define _loop1_113_type 1351
-#define _tmp_114_type 1352
-#define _loop0_116_type 1353
-#define _gather_115_type 1354
-#define _loop1_117_type 1355
-#define _loop0_118_type 1356
-#define _loop0_119_type 1357
-#define _tmp_120_type 1358
-#define _loop0_122_type 1359
-#define _gather_121_type 1360
-#define _tmp_123_type 1361
-#define _loop0_125_type 1362
-#define _gather_124_type 1363
-#define _loop0_127_type 1364
-#define _gather_126_type 1365
-#define _loop0_129_type 1366
-#define _gather_128_type 1367
-#define _loop0_131_type 1368
-#define _gather_130_type 1369
-#define _loop0_132_type 1370
-#define _loop0_134_type 1371
-#define _gather_133_type 1372
-#define _loop1_135_type 1373
-#define _tmp_136_type 1374
-#define _loop0_138_type 1375
-#define _gather_137_type 1376
-#define _loop0_140_type 1377
-#define _gather_139_type 1378
-#define _loop0_142_type 1379
-#define _gather_141_type 1380
-#define _loop0_144_type 1381
-#define _gather_143_type 1382
-#define _loop0_146_type 1383
-#define _gather_145_type 1384
-#define _tmp_147_type 1385
-#define _tmp_148_type 1386
-#define _tmp_149_type 1387
-#define _tmp_150_type 1388
-#define _tmp_151_type 1389
-#define _tmp_152_type 1390
-#define _tmp_153_type 1391
-#define _tmp_154_type 1392
-#define _tmp_155_type 1393
-#define _tmp_156_type 1394
-#define _tmp_157_type 1395
-#define _tmp_158_type 1396
-#define _loop0_159_type 1397
-#define _loop0_160_type 1398
-#define _loop0_161_type 1399
-#define _tmp_162_type 1400
-#define _tmp_163_type 1401
-#define _tmp_164_type 1402
-#define _tmp_165_type 1403
-#define _tmp_166_type 1404
-#define _loop0_167_type 1405
-#define _loop0_168_type 1406
-#define _loop0_169_type 1407
-#define _loop1_170_type 1408
-#define _tmp_171_type 1409
-#define _loop0_172_type 1410
-#define _tmp_173_type 1411
-#define _loop0_174_type 1412
-#define _loop1_175_type 1413
-#define _tmp_176_type 1414
-#define _tmp_177_type 1415
-#define _tmp_178_type 1416
-#define _loop0_179_type 1417
-#define _tmp_180_type 1418
-#define _tmp_181_type 1419
-#define _loop1_182_type 1420
-#define _tmp_183_type 1421
-#define _loop0_184_type 1422
-#define _loop0_185_type 1423
-#define _loop0_186_type 1424
-#define _loop0_188_type 1425
-#define _gather_187_type 1426
-#define _tmp_189_type 1427
-#define _loop0_190_type 1428
-#define _tmp_191_type 1429
-#define _loop0_192_type 1430
-#define _loop1_193_type 1431
-#define _loop1_194_type 1432
-#define _tmp_195_type 1433
-#define _tmp_196_type 1434
-#define _loop0_197_type 1435
-#define _tmp_198_type 1436
-#define _tmp_199_type 1437
-#define _tmp_200_type 1438
-#define _loop0_202_type 1439
-#define _gather_201_type 1440
-#define _loop0_204_type 1441
-#define _gather_203_type 1442
-#define _loop0_206_type 1443
-#define _gather_205_type 1444
-#define _loop0_208_type 1445
-#define _gather_207_type 1446
-#define _tmp_209_type 1447
-#define _loop0_210_type 1448
-#define _loop1_211_type 1449
-#define _tmp_212_type 1450
-#define _loop0_213_type 1451
-#define _loop1_214_type 1452
-#define _tmp_215_type 1453
-#define _tmp_216_type 1454
-#define _tmp_217_type 1455
-#define _tmp_218_type 1456
-#define _tmp_219_type 1457
-#define _tmp_220_type 1458
-#define _tmp_221_type 1459
-#define _tmp_222_type 1460
-#define _tmp_223_type 1461
-#define _tmp_224_type 1462
-#define _loop0_226_type 1463
-#define _gather_225_type 1464
-#define _tmp_227_type 1465
-#define _tmp_228_type 1466
-#define _tmp_229_type 1467
-#define _tmp_230_type 1468
-#define _tmp_231_type 1469
-#define _tmp_232_type 1470
-#define _tmp_233_type 1471
-#define _tmp_234_type 1472
-#define _tmp_235_type 1473
-#define _tmp_236_type 1474
-#define _tmp_237_type 1475
-#define _tmp_238_type 1476
-#define _tmp_239_type 1477
-#define _loop0_240_type 1478
-#define _tmp_241_type 1479
-#define _tmp_242_type 1480
-#define _tmp_243_type 1481
-#define _tmp_244_type 1482
-#define _tmp_245_type 1483
-#define _tmp_246_type 1484
-#define _tmp_247_type 1485
-#define _tmp_248_type 1486
-#define _tmp_249_type 1487
-#define _tmp_250_type 1488
-#define _tmp_251_type 1489
-#define _tmp_252_type 1490
-#define _tmp_253_type 1491
-#define _tmp_254_type 1492
-#define _tmp_255_type 1493
-#define _tmp_256_type 1494
-#define _tmp_257_type 1495
-#define _tmp_258_type 1496
-#define _tmp_259_type 1497
-#define _tmp_260_type 1498
-#define _tmp_261_type 1499
-#define _tmp_262_type 1500
-#define _tmp_263_type 1501
-#define _tmp_264_type 1502
-#define _tmp_265_type 1503
-#define _tmp_266_type 1504
-#define _tmp_267_type 1505
-#define _tmp_268_type 1506
-#define _tmp_269_type 1507
-#define _tmp_270_type 1508
-#define _tmp_271_type 1509
-#define _tmp_272_type 1510
+#define statements_type 1004
+#define statement_type 1005
+#define statement_newline_type 1006
+#define simple_stmts_type 1007
+#define simple_stmt_type 1008
+#define compound_stmt_type 1009
+#define assignment_type 1010
+#define annotated_rhs_type 1011
+#define augassign_type 1012
+#define return_stmt_type 1013
+#define raise_stmt_type 1014
+#define global_stmt_type 1015
+#define nonlocal_stmt_type 1016
+#define del_stmt_type 1017
+#define yield_stmt_type 1018
+#define assert_stmt_type 1019
+#define import_stmt_type 1020
+#define import_name_type 1021
+#define import_from_type 1022
+#define import_from_targets_type 1023
+#define import_from_as_names_type 1024
+#define import_from_as_name_type 1025
+#define dotted_as_names_type 1026
+#define dotted_as_name_type 1027
+#define dotted_name_type 1028  // Left-recursive
+#define block_type 1029
+#define decorators_type 1030
+#define class_def_type 1031
+#define class_def_raw_type 1032
+#define function_def_type 1033
+#define function_def_raw_type 1034
+#define params_type 1035
+#define parameters_type 1036
+#define slash_no_default_type 1037
+#define slash_with_default_type 1038
+#define star_etc_type 1039
+#define kwds_type 1040
+#define param_no_default_type 1041
+#define param_no_default_star_annotation_type 1042
+#define param_with_default_type 1043
+#define param_maybe_default_type 1044
+#define param_type 1045
+#define param_star_annotation_type 1046
+#define annotation_type 1047
+#define star_annotation_type 1048
+#define default_type 1049
+#define if_stmt_type 1050
+#define elif_stmt_type 1051
+#define else_block_type 1052
+#define while_stmt_type 1053
+#define for_stmt_type 1054
+#define with_stmt_type 1055
+#define with_item_type 1056
+#define try_stmt_type 1057
+#define except_block_type 1058
+#define except_star_block_type 1059
+#define finally_block_type 1060
+#define match_stmt_type 1061
+#define subject_expr_type 1062
+#define case_block_type 1063
+#define guard_type 1064
+#define patterns_type 1065
+#define pattern_type 1066
+#define as_pattern_type 1067
+#define or_pattern_type 1068
+#define closed_pattern_type 1069
+#define literal_pattern_type 1070
+#define literal_expr_type 1071
+#define complex_number_type 1072
+#define signed_number_type 1073
+#define signed_real_number_type 1074
+#define real_number_type 1075
+#define imaginary_number_type 1076
+#define capture_pattern_type 1077
+#define pattern_capture_target_type 1078
+#define wildcard_pattern_type 1079
+#define value_pattern_type 1080
+#define attr_type 1081  // Left-recursive
+#define name_or_attr_type 1082  // Left-recursive
+#define group_pattern_type 1083
+#define sequence_pattern_type 1084
+#define open_sequence_pattern_type 1085
+#define maybe_sequence_pattern_type 1086
+#define maybe_star_pattern_type 1087
+#define star_pattern_type 1088
+#define mapping_pattern_type 1089
+#define items_pattern_type 1090
+#define key_value_pattern_type 1091
+#define double_star_pattern_type 1092
+#define class_pattern_type 1093
+#define positional_patterns_type 1094
+#define keyword_patterns_type 1095
+#define keyword_pattern_type 1096
+#define type_alias_type 1097
+#define type_params_type 1098
+#define type_param_seq_type 1099
+#define type_param_type 1100
+#define type_param_bound_type 1101
+#define expressions_type 1102
+#define expression_type 1103
+#define yield_expr_type 1104
+#define star_expressions_type 1105
+#define star_expression_type 1106
+#define star_named_expressions_type 1107
+#define star_named_expression_type 1108
+#define assignment_expression_type 1109
+#define named_expression_type 1110
+#define disjunction_type 1111
+#define conjunction_type 1112
+#define inversion_type 1113
+#define comparison_type 1114
+#define compare_op_bitwise_or_pair_type 1115
+#define eq_bitwise_or_type 1116
+#define noteq_bitwise_or_type 1117
+#define lte_bitwise_or_type 1118
+#define lt_bitwise_or_type 1119
+#define gte_bitwise_or_type 1120
+#define gt_bitwise_or_type 1121
+#define notin_bitwise_or_type 1122
+#define in_bitwise_or_type 1123
+#define isnot_bitwise_or_type 1124
+#define is_bitwise_or_type 1125
+#define bitwise_or_type 1126  // Left-recursive
+#define bitwise_xor_type 1127  // Left-recursive
+#define bitwise_and_type 1128  // Left-recursive
+#define shift_expr_type 1129  // Left-recursive
+#define sum_type 1130  // Left-recursive
+#define term_type 1131  // Left-recursive
+#define factor_type 1132
+#define power_type 1133
+#define await_primary_type 1134
+#define primary_type 1135  // Left-recursive
+#define slices_type 1136
+#define slice_type 1137
+#define atom_type 1138
+#define group_type 1139
+#define lambdef_type 1140
+#define lambda_params_type 1141
+#define lambda_parameters_type 1142
+#define lambda_slash_no_default_type 1143
+#define lambda_slash_with_default_type 1144
+#define lambda_star_etc_type 1145
+#define lambda_kwds_type 1146
+#define lambda_param_no_default_type 1147
+#define lambda_param_with_default_type 1148
+#define lambda_param_maybe_default_type 1149
+#define lambda_param_type 1150
+#define fstring_middle_type 1151
+#define fstring_replacement_field_type 1152
+#define fstring_conversion_type 1153
+#define fstring_full_format_spec_type 1154
+#define fstring_format_spec_type 1155
+#define fstring_type 1156
+#define string_type 1157
+#define strings_type 1158
+#define list_type 1159
+#define tuple_type 1160
+#define set_type 1161
+#define dict_type 1162
+#define double_starred_kvpairs_type 1163
+#define double_starred_kvpair_type 1164
+#define kvpair_type 1165
+#define for_if_clauses_type 1166
+#define for_if_clause_type 1167
+#define listcomp_type 1168
+#define setcomp_type 1169
+#define genexp_type 1170
+#define dictcomp_type 1171
+#define arguments_type 1172
+#define args_type 1173
+#define kwargs_type 1174
+#define starred_expression_type 1175
+#define kwarg_or_starred_type 1176
+#define kwarg_or_double_starred_type 1177
+#define star_targets_type 1178
+#define star_targets_list_seq_type 1179
+#define star_targets_tuple_seq_type 1180
+#define star_target_type 1181
+#define target_with_star_atom_type 1182
+#define star_atom_type 1183
+#define single_target_type 1184
+#define single_subscript_attribute_target_type 1185
+#define t_primary_type 1186  // Left-recursive
+#define t_lookahead_type 1187
+#define del_targets_type 1188
+#define del_target_type 1189
+#define del_t_atom_type 1190
+#define type_expressions_type 1191
+#define func_type_comment_type 1192
+#define invalid_arguments_type 1193
+#define invalid_kwarg_type 1194
+#define expression_without_invalid_type 1195
+#define invalid_legacy_expression_type 1196
+#define invalid_expression_type 1197
+#define invalid_named_expression_type 1198
+#define invalid_assignment_type 1199
+#define invalid_ann_assign_target_type 1200
+#define invalid_del_stmt_type 1201
+#define invalid_block_type 1202
+#define invalid_comprehension_type 1203
+#define invalid_dict_comprehension_type 1204
+#define invalid_parameters_type 1205
+#define invalid_default_type 1206
+#define invalid_star_etc_type 1207
+#define invalid_kwds_type 1208
+#define invalid_parameters_helper_type 1209
+#define invalid_lambda_parameters_type 1210
+#define invalid_lambda_parameters_helper_type 1211
+#define invalid_lambda_star_etc_type 1212
+#define invalid_lambda_kwds_type 1213
+#define invalid_double_type_comments_type 1214
+#define invalid_with_item_type 1215
+#define invalid_for_target_type 1216
+#define invalid_group_type 1217
+#define invalid_import_type 1218
+#define invalid_import_from_targets_type 1219
+#define invalid_compound_stmt_type 1220
+#define invalid_with_stmt_type 1221
+#define invalid_with_stmt_indent_type 1222
+#define invalid_try_stmt_type 1223
+#define invalid_except_stmt_type 1224
+#define invalid_finally_stmt_type 1225
+#define invalid_except_stmt_indent_type 1226
+#define invalid_except_star_stmt_indent_type 1227
+#define invalid_match_stmt_type 1228
+#define invalid_case_block_type 1229
+#define invalid_as_pattern_type 1230
+#define invalid_class_pattern_type 1231
+#define invalid_class_argument_pattern_type 1232
+#define invalid_if_stmt_type 1233
+#define invalid_elif_stmt_type 1234
+#define invalid_else_stmt_type 1235
+#define invalid_while_stmt_type 1236
+#define invalid_for_stmt_type 1237
+#define invalid_def_raw_type 1238
+#define invalid_class_def_raw_type 1239
+#define invalid_double_starred_kvpairs_type 1240
+#define invalid_kvpair_type 1241
+#define invalid_starred_expression_type 1242
+#define invalid_replacement_field_type 1243
+#define invalid_conversion_character_type 1244
+#define _loop0_1_type 1245
+#define _loop0_2_type 1246
+#define _loop1_3_type 1247
+#define _loop0_5_type 1248
+#define _gather_4_type 1249
+#define _tmp_6_type 1250
+#define _tmp_7_type 1251
+#define _tmp_8_type 1252
+#define _tmp_9_type 1253
+#define _tmp_10_type 1254
+#define _tmp_11_type 1255
+#define _tmp_12_type 1256
+#define _tmp_13_type 1257
+#define _loop1_14_type 1258
+#define _tmp_15_type 1259
+#define _tmp_16_type 1260
+#define _tmp_17_type 1261
+#define _loop0_19_type 1262
+#define _gather_18_type 1263
+#define _loop0_21_type 1264
+#define _gather_20_type 1265
+#define _tmp_22_type 1266
+#define _tmp_23_type 1267
+#define _loop0_24_type 1268
+#define _loop1_25_type 1269
+#define _loop0_27_type 1270
+#define _gather_26_type 1271
+#define _tmp_28_type 1272
+#define _loop0_30_type 1273
+#define _gather_29_type 1274
+#define _tmp_31_type 1275
+#define _loop1_32_type 1276
+#define _tmp_33_type 1277
+#define _tmp_34_type 1278
+#define _tmp_35_type 1279
+#define _loop0_36_type 1280
+#define _loop0_37_type 1281
+#define _loop0_38_type 1282
+#define _loop1_39_type 1283
+#define _loop0_40_type 1284
+#define _loop1_41_type 1285
+#define _loop1_42_type 1286
+#define _loop1_43_type 1287
+#define _loop0_44_type 1288
+#define _loop1_45_type 1289
+#define _loop0_46_type 1290
+#define _loop1_47_type 1291
+#define _loop0_48_type 1292
+#define _loop0_49_type 1293
+#define _loop1_50_type 1294
+#define _loop0_52_type 1295
+#define _gather_51_type 1296
+#define _loop0_54_type 1297
+#define _gather_53_type 1298
+#define _loop0_56_type 1299
+#define _gather_55_type 1300
+#define _loop0_58_type 1301
+#define _gather_57_type 1302
+#define _tmp_59_type 1303
+#define _loop1_60_type 1304
+#define _loop1_61_type 1305
+#define _tmp_62_type 1306
+#define _tmp_63_type 1307
+#define _loop1_64_type 1308
+#define _loop0_66_type 1309
+#define _gather_65_type 1310
+#define _tmp_67_type 1311
+#define _tmp_68_type 1312
+#define _tmp_69_type 1313
+#define _tmp_70_type 1314
+#define _loop0_72_type 1315
+#define _gather_71_type 1316
+#define _loop0_74_type 1317
+#define _gather_73_type 1318
+#define _tmp_75_type 1319
+#define _loop0_77_type 1320
+#define _gather_76_type 1321
+#define _loop0_79_type 1322
+#define _gather_78_type 1323
+#define _loop0_81_type 1324
+#define _gather_80_type 1325
+#define _loop1_82_type 1326
+#define _loop1_83_type 1327
+#define _loop0_85_type 1328
+#define _gather_84_type 1329
+#define _loop1_86_type 1330
+#define _loop1_87_type 1331
+#define _loop1_88_type 1332
+#define _tmp_89_type 1333
+#define _loop0_91_type 1334
+#define _gather_90_type 1335
+#define _tmp_92_type 1336
+#define _tmp_93_type 1337
+#define _tmp_94_type 1338
+#define _tmp_95_type 1339
+#define _tmp_96_type 1340
+#define _tmp_97_type 1341
+#define _loop0_98_type 1342
+#define _loop0_99_type 1343
+#define _loop0_100_type 1344
+#define _loop1_101_type 1345
+#define _loop0_102_type 1346
+#define _loop1_103_type 1347
+#define _loop1_104_type 1348
+#define _loop1_105_type 1349
+#define _loop0_106_type 1350
+#define _loop1_107_type 1351
+#define _loop0_108_type 1352
+#define _loop1_109_type 1353
+#define _loop0_110_type 1354
+#define _loop1_111_type 1355
+#define _tmp_112_type 1356
+#define _loop0_113_type 1357
+#define _loop0_114_type 1358
+#define _loop1_115_type 1359
+#define _tmp_116_type 1360
+#define _loop0_118_type 1361
+#define _gather_117_type 1362
+#define _loop1_119_type 1363
+#define _loop0_120_type 1364
+#define _loop0_121_type 1365
+#define _tmp_122_type 1366
+#define _loop0_124_type 1367
+#define _gather_123_type 1368
+#define _tmp_125_type 1369
+#define _loop0_127_type 1370
+#define _gather_126_type 1371
+#define _loop0_129_type 1372
+#define _gather_128_type 1373
+#define _loop0_131_type 1374
+#define _gather_130_type 1375
+#define _loop0_133_type 1376
+#define _gather_132_type 1377
+#define _loop0_134_type 1378
+#define _loop0_136_type 1379
+#define _gather_135_type 1380
+#define _loop1_137_type 1381
+#define _tmp_138_type 1382
+#define _loop0_140_type 1383
+#define _gather_139_type 1384
+#define _loop0_142_type 1385
+#define _gather_141_type 1386
+#define _loop0_144_type 1387
+#define _gather_143_type 1388
+#define _loop0_146_type 1389
+#define _gather_145_type 1390
+#define _loop0_148_type 1391
+#define _gather_147_type 1392
+#define _tmp_149_type 1393
+#define _tmp_150_type 1394
+#define _tmp_151_type 1395
+#define _tmp_152_type 1396
+#define _tmp_153_type 1397
+#define _tmp_154_type 1398
+#define _tmp_155_type 1399
+#define _tmp_156_type 1400
+#define _tmp_157_type 1401
+#define _tmp_158_type 1402
+#define _tmp_159_type 1403
+#define _tmp_160_type 1404
+#define _loop0_161_type 1405
+#define _loop0_162_type 1406
+#define _loop0_163_type 1407
+#define _tmp_164_type 1408
+#define _tmp_165_type 1409
+#define _tmp_166_type 1410
+#define _tmp_167_type 1411
+#define _tmp_168_type 1412
+#define _loop0_169_type 1413
+#define _loop0_170_type 1414
+#define _loop0_171_type 1415
+#define _loop1_172_type 1416
+#define _tmp_173_type 1417
+#define _loop0_174_type 1418
+#define _tmp_175_type 1419
+#define _loop0_176_type 1420
+#define _loop1_177_type 1421
+#define _tmp_178_type 1422
+#define _tmp_179_type 1423
+#define _tmp_180_type 1424
+#define _loop0_181_type 1425
+#define _tmp_182_type 1426
+#define _tmp_183_type 1427
+#define _loop1_184_type 1428
+#define _tmp_185_type 1429
+#define _loop0_186_type 1430
+#define _loop0_187_type 1431
+#define _loop0_188_type 1432
+#define _loop0_190_type 1433
+#define _gather_189_type 1434
+#define _tmp_191_type 1435
+#define _loop0_192_type 1436
+#define _tmp_193_type 1437
+#define _loop0_194_type 1438
+#define _loop1_195_type 1439
+#define _loop1_196_type 1440
+#define _tmp_197_type 1441
+#define _tmp_198_type 1442
+#define _loop0_199_type 1443
+#define _tmp_200_type 1444
+#define _tmp_201_type 1445
+#define _tmp_202_type 1446
+#define _loop0_204_type 1447
+#define _gather_203_type 1448
+#define _loop0_206_type 1449
+#define _gather_205_type 1450
+#define _loop0_208_type 1451
+#define _gather_207_type 1452
+#define _loop0_210_type 1453
+#define _gather_209_type 1454
+#define _loop0_212_type 1455
+#define _gather_211_type 1456
+#define _tmp_213_type 1457
+#define _loop0_214_type 1458
+#define _loop1_215_type 1459
+#define _tmp_216_type 1460
+#define _loop0_217_type 1461
+#define _loop1_218_type 1462
+#define _tmp_219_type 1463
+#define _tmp_220_type 1464
+#define _tmp_221_type 1465
+#define _tmp_222_type 1466
+#define _tmp_223_type 1467
+#define _tmp_224_type 1468
+#define _tmp_225_type 1469
+#define _tmp_226_type 1470
+#define _tmp_227_type 1471
+#define _tmp_228_type 1472
+#define _loop0_230_type 1473
+#define _gather_229_type 1474
+#define _tmp_231_type 1475
+#define _tmp_232_type 1476
+#define _tmp_233_type 1477
+#define _tmp_234_type 1478
+#define _tmp_235_type 1479
+#define _tmp_236_type 1480
+#define _tmp_237_type 1481
+#define _tmp_238_type 1482
+#define _tmp_239_type 1483
+#define _tmp_240_type 1484
+#define _tmp_241_type 1485
+#define _tmp_242_type 1486
+#define _tmp_243_type 1487
+#define _loop0_244_type 1488
+#define _tmp_245_type 1489
+#define _tmp_246_type 1490
+#define _tmp_247_type 1491
+#define _tmp_248_type 1492
+#define _tmp_249_type 1493
+#define _tmp_250_type 1494
+#define _tmp_251_type 1495
+#define _tmp_252_type 1496
+#define _tmp_253_type 1497
+#define _tmp_254_type 1498
+#define _tmp_255_type 1499
+#define _tmp_256_type 1500
+#define _tmp_257_type 1501
+#define _tmp_258_type 1502
+#define _tmp_259_type 1503
+#define _tmp_260_type 1504
+#define _tmp_261_type 1505
+#define _tmp_262_type 1506
+#define _tmp_263_type 1507
+#define _tmp_264_type 1508
+#define _tmp_265_type 1509
+#define _tmp_266_type 1510
+#define _tmp_267_type 1511
+#define _tmp_268_type 1512
+#define _tmp_269_type 1513
+#define _tmp_270_type 1514
+#define _tmp_271_type 1515
+#define _tmp_272_type 1516
+#define _tmp_273_type 1517
+#define _loop0_275_type 1518
+#define _gather_274_type 1519
+#define _tmp_276_type 1520
+#define _tmp_277_type 1521
+#define _tmp_278_type 1522
+#define _tmp_279_type 1523
+#define _tmp_280_type 1524
+#define _tmp_281_type 1525
 
 static mod_ty file_rule(Parser *p);
 static mod_ty interactive_rule(Parser *p);
 static mod_ty eval_rule(Parser *p);
 static mod_ty func_type_rule(Parser *p);
-static expr_ty fstring_rule(Parser *p);
 static asdl_stmt_seq* statements_rule(Parser *p);
 static asdl_stmt_seq* statement_rule(Parser *p);
 static asdl_stmt_seq* statement_newline_rule(Parser *p);
@@ -687,6 +708,11 @@ static pattern_ty class_pattern_rule(Parser *p);
 static asdl_pattern_seq* positional_patterns_rule(Parser *p);
 static asdl_seq* keyword_patterns_rule(Parser *p);
 static KeyPatternPair* keyword_pattern_rule(Parser *p);
+static stmt_ty type_alias_rule(Parser *p);
+static asdl_type_param_seq* type_params_rule(Parser *p);
+static asdl_type_param_seq* type_param_seq_rule(Parser *p);
+static type_param_ty type_param_rule(Parser *p);
+static expr_ty type_param_bound_rule(Parser *p);
 static expr_ty expressions_rule(Parser *p);
 static expr_ty expression_rule(Parser *p);
 static expr_ty yield_expr_rule(Parser *p);
@@ -741,6 +767,7 @@ static expr_ty fstring_replacement_field_rule(Parser *p);
 static ResultTokenWithMetadata* fstring_conversion_rule(Parser *p);
 static ResultTokenWithMetadata* fstring_full_format_spec_rule(Parser *p);
 static expr_ty fstring_format_spec_rule(Parser *p);
+static expr_ty fstring_rule(Parser *p);
 static expr_ty string_rule(Parser *p);
 static expr_ty strings_rule(Parser *p);
 static expr_ty list_rule(Parser *p);
@@ -804,6 +831,7 @@ static void *invalid_for_target_rule(Parser *p);
 static void *invalid_group_rule(Parser *p);
 static void *invalid_import_rule(Parser *p);
 static void *invalid_import_from_targets_rule(Parser *p);
+static void *invalid_compound_stmt_rule(Parser *p);
 static void *invalid_with_stmt_rule(Parser *p);
 static void *invalid_with_stmt_indent_rule(Parser *p);
 static void *invalid_try_stmt_rule(Parser *p);
@@ -830,10 +858,10 @@ static void *invalid_replacement_field_rule(Parser *p);
 static void *invalid_conversion_character_rule(Parser *p);
 static asdl_seq *_loop0_1_rule(Parser *p);
 static asdl_seq *_loop0_2_rule(Parser *p);
-static asdl_seq *_loop0_3_rule(Parser *p);
-static asdl_seq *_loop1_4_rule(Parser *p);
-static asdl_seq *_loop0_6_rule(Parser *p);
-static asdl_seq *_gather_5_rule(Parser *p);
+static asdl_seq *_loop1_3_rule(Parser *p);
+static asdl_seq *_loop0_5_rule(Parser *p);
+static asdl_seq *_gather_4_rule(Parser *p);
+static void *_tmp_6_rule(Parser *p);
 static void *_tmp_7_rule(Parser *p);
 static void *_tmp_8_rule(Parser *p);
 static void *_tmp_9_rule(Parser *p);
@@ -841,131 +869,131 @@ static void *_tmp_10_rule(Parser *p);
 static void *_tmp_11_rule(Parser *p);
 static void *_tmp_12_rule(Parser *p);
 static void *_tmp_13_rule(Parser *p);
-static void *_tmp_14_rule(Parser *p);
-static asdl_seq *_loop1_15_rule(Parser *p);
+static asdl_seq *_loop1_14_rule(Parser *p);
+static void *_tmp_15_rule(Parser *p);
 static void *_tmp_16_rule(Parser *p);
 static void *_tmp_17_rule(Parser *p);
-static void *_tmp_18_rule(Parser *p);
-static asdl_seq *_loop0_20_rule(Parser *p);
-static asdl_seq *_gather_19_rule(Parser *p);
-static asdl_seq *_loop0_22_rule(Parser *p);
-static asdl_seq *_gather_21_rule(Parser *p);
+static asdl_seq *_loop0_19_rule(Parser *p);
+static asdl_seq *_gather_18_rule(Parser *p);
+static asdl_seq *_loop0_21_rule(Parser *p);
+static asdl_seq *_gather_20_rule(Parser *p);
+static void *_tmp_22_rule(Parser *p);
 static void *_tmp_23_rule(Parser *p);
-static void *_tmp_24_rule(Parser *p);
-static asdl_seq *_loop0_25_rule(Parser *p);
-static asdl_seq *_loop1_26_rule(Parser *p);
-static asdl_seq *_loop0_28_rule(Parser *p);
-static asdl_seq *_gather_27_rule(Parser *p);
-static void *_tmp_29_rule(Parser *p);
-static asdl_seq *_loop0_31_rule(Parser *p);
-static asdl_seq *_gather_30_rule(Parser *p);
-static void *_tmp_32_rule(Parser *p);
-static asdl_seq *_loop1_33_rule(Parser *p);
+static asdl_seq *_loop0_24_rule(Parser *p);
+static asdl_seq *_loop1_25_rule(Parser *p);
+static asdl_seq *_loop0_27_rule(Parser *p);
+static asdl_seq *_gather_26_rule(Parser *p);
+static void *_tmp_28_rule(Parser *p);
+static asdl_seq *_loop0_30_rule(Parser *p);
+static asdl_seq *_gather_29_rule(Parser *p);
+static void *_tmp_31_rule(Parser *p);
+static asdl_seq *_loop1_32_rule(Parser *p);
+static void *_tmp_33_rule(Parser *p);
 static void *_tmp_34_rule(Parser *p);
 static void *_tmp_35_rule(Parser *p);
-static void *_tmp_36_rule(Parser *p);
+static asdl_seq *_loop0_36_rule(Parser *p);
 static asdl_seq *_loop0_37_rule(Parser *p);
 static asdl_seq *_loop0_38_rule(Parser *p);
-static asdl_seq *_loop0_39_rule(Parser *p);
-static asdl_seq *_loop1_40_rule(Parser *p);
-static asdl_seq *_loop0_41_rule(Parser *p);
+static asdl_seq *_loop1_39_rule(Parser *p);
+static asdl_seq *_loop0_40_rule(Parser *p);
+static asdl_seq *_loop1_41_rule(Parser *p);
 static asdl_seq *_loop1_42_rule(Parser *p);
 static asdl_seq *_loop1_43_rule(Parser *p);
-static asdl_seq *_loop1_44_rule(Parser *p);
-static asdl_seq *_loop0_45_rule(Parser *p);
-static asdl_seq *_loop1_46_rule(Parser *p);
-static asdl_seq *_loop0_47_rule(Parser *p);
-static asdl_seq *_loop1_48_rule(Parser *p);
+static asdl_seq *_loop0_44_rule(Parser *p);
+static asdl_seq *_loop1_45_rule(Parser *p);
+static asdl_seq *_loop0_46_rule(Parser *p);
+static asdl_seq *_loop1_47_rule(Parser *p);
+static asdl_seq *_loop0_48_rule(Parser *p);
 static asdl_seq *_loop0_49_rule(Parser *p);
-static asdl_seq *_loop0_50_rule(Parser *p);
-static asdl_seq *_loop1_51_rule(Parser *p);
-static asdl_seq *_loop0_53_rule(Parser *p);
-static asdl_seq *_gather_52_rule(Parser *p);
-static asdl_seq *_loop0_55_rule(Parser *p);
-static asdl_seq *_gather_54_rule(Parser *p);
-static asdl_seq *_loop0_57_rule(Parser *p);
-static asdl_seq *_gather_56_rule(Parser *p);
-static asdl_seq *_loop0_59_rule(Parser *p);
-static asdl_seq *_gather_58_rule(Parser *p);
-static void *_tmp_60_rule(Parser *p);
+static asdl_seq *_loop1_50_rule(Parser *p);
+static asdl_seq *_loop0_52_rule(Parser *p);
+static asdl_seq *_gather_51_rule(Parser *p);
+static asdl_seq *_loop0_54_rule(Parser *p);
+static asdl_seq *_gather_53_rule(Parser *p);
+static asdl_seq *_loop0_56_rule(Parser *p);
+static asdl_seq *_gather_55_rule(Parser *p);
+static asdl_seq *_loop0_58_rule(Parser *p);
+static asdl_seq *_gather_57_rule(Parser *p);
+static void *_tmp_59_rule(Parser *p);
+static asdl_seq *_loop1_60_rule(Parser *p);
 static asdl_seq *_loop1_61_rule(Parser *p);
-static asdl_seq *_loop1_62_rule(Parser *p);
+static void *_tmp_62_rule(Parser *p);
 static void *_tmp_63_rule(Parser *p);
-static void *_tmp_64_rule(Parser *p);
-static asdl_seq *_loop1_65_rule(Parser *p);
-static asdl_seq *_loop0_67_rule(Parser *p);
-static asdl_seq *_gather_66_rule(Parser *p);
+static asdl_seq *_loop1_64_rule(Parser *p);
+static asdl_seq *_loop0_66_rule(Parser *p);
+static asdl_seq *_gather_65_rule(Parser *p);
+static void *_tmp_67_rule(Parser *p);
 static void *_tmp_68_rule(Parser *p);
 static void *_tmp_69_rule(Parser *p);
 static void *_tmp_70_rule(Parser *p);
-static void *_tmp_71_rule(Parser *p);
-static asdl_seq *_loop0_73_rule(Parser *p);
-static asdl_seq *_gather_72_rule(Parser *p);
-static asdl_seq *_loop0_75_rule(Parser *p);
-static asdl_seq *_gather_74_rule(Parser *p);
-static void *_tmp_76_rule(Parser *p);
-static asdl_seq *_loop0_78_rule(Parser *p);
-static asdl_seq *_gather_77_rule(Parser *p);
-static asdl_seq *_loop0_80_rule(Parser *p);
-static asdl_seq *_gather_79_rule(Parser *p);
-static asdl_seq *_loop1_81_rule(Parser *p);
+static asdl_seq *_loop0_72_rule(Parser *p);
+static asdl_seq *_gather_71_rule(Parser *p);
+static asdl_seq *_loop0_74_rule(Parser *p);
+static asdl_seq *_gather_73_rule(Parser *p);
+static void *_tmp_75_rule(Parser *p);
+static asdl_seq *_loop0_77_rule(Parser *p);
+static asdl_seq *_gather_76_rule(Parser *p);
+static asdl_seq *_loop0_79_rule(Parser *p);
+static asdl_seq *_gather_78_rule(Parser *p);
+static asdl_seq *_loop0_81_rule(Parser *p);
+static asdl_seq *_gather_80_rule(Parser *p);
 static asdl_seq *_loop1_82_rule(Parser *p);
-static asdl_seq *_loop0_84_rule(Parser *p);
-static asdl_seq *_gather_83_rule(Parser *p);
-static asdl_seq *_loop1_85_rule(Parser *p);
+static asdl_seq *_loop1_83_rule(Parser *p);
+static asdl_seq *_loop0_85_rule(Parser *p);
+static asdl_seq *_gather_84_rule(Parser *p);
 static asdl_seq *_loop1_86_rule(Parser *p);
 static asdl_seq *_loop1_87_rule(Parser *p);
-static void *_tmp_88_rule(Parser *p);
-static asdl_seq *_loop0_90_rule(Parser *p);
-static asdl_seq *_gather_89_rule(Parser *p);
-static void *_tmp_91_rule(Parser *p);
+static asdl_seq *_loop1_88_rule(Parser *p);
+static void *_tmp_89_rule(Parser *p);
+static asdl_seq *_loop0_91_rule(Parser *p);
+static asdl_seq *_gather_90_rule(Parser *p);
 static void *_tmp_92_rule(Parser *p);
 static void *_tmp_93_rule(Parser *p);
 static void *_tmp_94_rule(Parser *p);
 static void *_tmp_95_rule(Parser *p);
 static void *_tmp_96_rule(Parser *p);
-static asdl_seq *_loop0_97_rule(Parser *p);
+static void *_tmp_97_rule(Parser *p);
 static asdl_seq *_loop0_98_rule(Parser *p);
 static asdl_seq *_loop0_99_rule(Parser *p);
-static asdl_seq *_loop1_100_rule(Parser *p);
-static asdl_seq *_loop0_101_rule(Parser *p);
-static asdl_seq *_loop1_102_rule(Parser *p);
+static asdl_seq *_loop0_100_rule(Parser *p);
+static asdl_seq *_loop1_101_rule(Parser *p);
+static asdl_seq *_loop0_102_rule(Parser *p);
 static asdl_seq *_loop1_103_rule(Parser *p);
 static asdl_seq *_loop1_104_rule(Parser *p);
-static asdl_seq *_loop0_105_rule(Parser *p);
-static asdl_seq *_loop1_106_rule(Parser *p);
-static asdl_seq *_loop0_107_rule(Parser *p);
-static asdl_seq *_loop1_108_rule(Parser *p);
-static asdl_seq *_loop0_109_rule(Parser *p);
-static asdl_seq *_loop1_110_rule(Parser *p);
-static void *_tmp_111_rule(Parser *p);
-static asdl_seq *_loop0_112_rule(Parser *p);
-static asdl_seq *_loop1_113_rule(Parser *p);
-static void *_tmp_114_rule(Parser *p);
-static asdl_seq *_loop0_116_rule(Parser *p);
-static asdl_seq *_gather_115_rule(Parser *p);
-static asdl_seq *_loop1_117_rule(Parser *p);
+static asdl_seq *_loop1_105_rule(Parser *p);
+static asdl_seq *_loop0_106_rule(Parser *p);
+static asdl_seq *_loop1_107_rule(Parser *p);
+static asdl_seq *_loop0_108_rule(Parser *p);
+static asdl_seq *_loop1_109_rule(Parser *p);
+static asdl_seq *_loop0_110_rule(Parser *p);
+static asdl_seq *_loop1_111_rule(Parser *p);
+static void *_tmp_112_rule(Parser *p);
+static asdl_seq *_loop0_113_rule(Parser *p);
+static asdl_seq *_loop0_114_rule(Parser *p);
+static asdl_seq *_loop1_115_rule(Parser *p);
+static void *_tmp_116_rule(Parser *p);
 static asdl_seq *_loop0_118_rule(Parser *p);
-static asdl_seq *_loop0_119_rule(Parser *p);
-static void *_tmp_120_rule(Parser *p);
-static asdl_seq *_loop0_122_rule(Parser *p);
-static asdl_seq *_gather_121_rule(Parser *p);
-static void *_tmp_123_rule(Parser *p);
-static asdl_seq *_loop0_125_rule(Parser *p);
-static asdl_seq *_gather_124_rule(Parser *p);
+static asdl_seq *_gather_117_rule(Parser *p);
+static asdl_seq *_loop1_119_rule(Parser *p);
+static asdl_seq *_loop0_120_rule(Parser *p);
+static asdl_seq *_loop0_121_rule(Parser *p);
+static void *_tmp_122_rule(Parser *p);
+static asdl_seq *_loop0_124_rule(Parser *p);
+static asdl_seq *_gather_123_rule(Parser *p);
+static void *_tmp_125_rule(Parser *p);
 static asdl_seq *_loop0_127_rule(Parser *p);
 static asdl_seq *_gather_126_rule(Parser *p);
 static asdl_seq *_loop0_129_rule(Parser *p);
 static asdl_seq *_gather_128_rule(Parser *p);
 static asdl_seq *_loop0_131_rule(Parser *p);
 static asdl_seq *_gather_130_rule(Parser *p);
-static asdl_seq *_loop0_132_rule(Parser *p);
+static asdl_seq *_loop0_133_rule(Parser *p);
+static asdl_seq *_gather_132_rule(Parser *p);
 static asdl_seq *_loop0_134_rule(Parser *p);
-static asdl_seq *_gather_133_rule(Parser *p);
-static asdl_seq *_loop1_135_rule(Parser *p);
-static void *_tmp_136_rule(Parser *p);
-static asdl_seq *_loop0_138_rule(Parser *p);
-static asdl_seq *_gather_137_rule(Parser *p);
+static asdl_seq *_loop0_136_rule(Parser *p);
+static asdl_seq *_gather_135_rule(Parser *p);
+static asdl_seq *_loop1_137_rule(Parser *p);
+static void *_tmp_138_rule(Parser *p);
 static asdl_seq *_loop0_140_rule(Parser *p);
 static asdl_seq *_gather_139_rule(Parser *p);
 static asdl_seq *_loop0_142_rule(Parser *p);
@@ -974,8 +1002,8 @@ static asdl_seq *_loop0_144_rule(Parser *p);
 static asdl_seq *_gather_143_rule(Parser *p);
 static asdl_seq *_loop0_146_rule(Parser *p);
 static asdl_seq *_gather_145_rule(Parser *p);
-static void *_tmp_147_rule(Parser *p);
-static void *_tmp_148_rule(Parser *p);
+static asdl_seq *_loop0_148_rule(Parser *p);
+static asdl_seq *_gather_147_rule(Parser *p);
 static void *_tmp_149_rule(Parser *p);
 static void *_tmp_150_rule(Parser *p);
 static void *_tmp_151_rule(Parser *p);
@@ -986,78 +1014,78 @@ static void *_tmp_155_rule(Parser *p);
 static void *_tmp_156_rule(Parser *p);
 static void *_tmp_157_rule(Parser *p);
 static void *_tmp_158_rule(Parser *p);
-static asdl_seq *_loop0_159_rule(Parser *p);
-static asdl_seq *_loop0_160_rule(Parser *p);
+static void *_tmp_159_rule(Parser *p);
+static void *_tmp_160_rule(Parser *p);
 static asdl_seq *_loop0_161_rule(Parser *p);
-static void *_tmp_162_rule(Parser *p);
-static void *_tmp_163_rule(Parser *p);
+static asdl_seq *_loop0_162_rule(Parser *p);
+static asdl_seq *_loop0_163_rule(Parser *p);
 static void *_tmp_164_rule(Parser *p);
 static void *_tmp_165_rule(Parser *p);
 static void *_tmp_166_rule(Parser *p);
-static asdl_seq *_loop0_167_rule(Parser *p);
-static asdl_seq *_loop0_168_rule(Parser *p);
+static void *_tmp_167_rule(Parser *p);
+static void *_tmp_168_rule(Parser *p);
 static asdl_seq *_loop0_169_rule(Parser *p);
-static asdl_seq *_loop1_170_rule(Parser *p);
-static void *_tmp_171_rule(Parser *p);
-static asdl_seq *_loop0_172_rule(Parser *p);
+static asdl_seq *_loop0_170_rule(Parser *p);
+static asdl_seq *_loop0_171_rule(Parser *p);
+static asdl_seq *_loop1_172_rule(Parser *p);
 static void *_tmp_173_rule(Parser *p);
 static asdl_seq *_loop0_174_rule(Parser *p);
-static asdl_seq *_loop1_175_rule(Parser *p);
-static void *_tmp_176_rule(Parser *p);
-static void *_tmp_177_rule(Parser *p);
+static void *_tmp_175_rule(Parser *p);
+static asdl_seq *_loop0_176_rule(Parser *p);
+static asdl_seq *_loop1_177_rule(Parser *p);
 static void *_tmp_178_rule(Parser *p);
-static asdl_seq *_loop0_179_rule(Parser *p);
+static void *_tmp_179_rule(Parser *p);
 static void *_tmp_180_rule(Parser *p);
-static void *_tmp_181_rule(Parser *p);
-static asdl_seq *_loop1_182_rule(Parser *p);
+static asdl_seq *_loop0_181_rule(Parser *p);
+static void *_tmp_182_rule(Parser *p);
 static void *_tmp_183_rule(Parser *p);
-static asdl_seq *_loop0_184_rule(Parser *p);
-static asdl_seq *_loop0_185_rule(Parser *p);
+static asdl_seq *_loop1_184_rule(Parser *p);
+static void *_tmp_185_rule(Parser *p);
 static asdl_seq *_loop0_186_rule(Parser *p);
+static asdl_seq *_loop0_187_rule(Parser *p);
 static asdl_seq *_loop0_188_rule(Parser *p);
-static asdl_seq *_gather_187_rule(Parser *p);
-static void *_tmp_189_rule(Parser *p);
 static asdl_seq *_loop0_190_rule(Parser *p);
+static asdl_seq *_gather_189_rule(Parser *p);
 static void *_tmp_191_rule(Parser *p);
 static asdl_seq *_loop0_192_rule(Parser *p);
-static asdl_seq *_loop1_193_rule(Parser *p);
-static asdl_seq *_loop1_194_rule(Parser *p);
-static void *_tmp_195_rule(Parser *p);
-static void *_tmp_196_rule(Parser *p);
-static asdl_seq *_loop0_197_rule(Parser *p);
+static void *_tmp_193_rule(Parser *p);
+static asdl_seq *_loop0_194_rule(Parser *p);
+static asdl_seq *_loop1_195_rule(Parser *p);
+static asdl_seq *_loop1_196_rule(Parser *p);
+static void *_tmp_197_rule(Parser *p);
 static void *_tmp_198_rule(Parser *p);
-static void *_tmp_199_rule(Parser *p);
+static asdl_seq *_loop0_199_rule(Parser *p);
 static void *_tmp_200_rule(Parser *p);
-static asdl_seq *_loop0_202_rule(Parser *p);
-static asdl_seq *_gather_201_rule(Parser *p);
+static void *_tmp_201_rule(Parser *p);
+static void *_tmp_202_rule(Parser *p);
 static asdl_seq *_loop0_204_rule(Parser *p);
 static asdl_seq *_gather_203_rule(Parser *p);
 static asdl_seq *_loop0_206_rule(Parser *p);
 static asdl_seq *_gather_205_rule(Parser *p);
 static asdl_seq *_loop0_208_rule(Parser *p);
 static asdl_seq *_gather_207_rule(Parser *p);
-static void *_tmp_209_rule(Parser *p);
 static asdl_seq *_loop0_210_rule(Parser *p);
-static asdl_seq *_loop1_211_rule(Parser *p);
-static void *_tmp_212_rule(Parser *p);
-static asdl_seq *_loop0_213_rule(Parser *p);
-static asdl_seq *_loop1_214_rule(Parser *p);
-static void *_tmp_215_rule(Parser *p);
+static asdl_seq *_gather_209_rule(Parser *p);
+static asdl_seq *_loop0_212_rule(Parser *p);
+static asdl_seq *_gather_211_rule(Parser *p);
+static void *_tmp_213_rule(Parser *p);
+static asdl_seq *_loop0_214_rule(Parser *p);
+static asdl_seq *_loop1_215_rule(Parser *p);
 static void *_tmp_216_rule(Parser *p);
-static void *_tmp_217_rule(Parser *p);
-static void *_tmp_218_rule(Parser *p);
+static asdl_seq *_loop0_217_rule(Parser *p);
+static asdl_seq *_loop1_218_rule(Parser *p);
 static void *_tmp_219_rule(Parser *p);
 static void *_tmp_220_rule(Parser *p);
 static void *_tmp_221_rule(Parser *p);
 static void *_tmp_222_rule(Parser *p);
 static void *_tmp_223_rule(Parser *p);
 static void *_tmp_224_rule(Parser *p);
-static asdl_seq *_loop0_226_rule(Parser *p);
-static asdl_seq *_gather_225_rule(Parser *p);
+static void *_tmp_225_rule(Parser *p);
+static void *_tmp_226_rule(Parser *p);
 static void *_tmp_227_rule(Parser *p);
 static void *_tmp_228_rule(Parser *p);
-static void *_tmp_229_rule(Parser *p);
-static void *_tmp_230_rule(Parser *p);
+static asdl_seq *_loop0_230_rule(Parser *p);
+static asdl_seq *_gather_229_rule(Parser *p);
 static void *_tmp_231_rule(Parser *p);
 static void *_tmp_232_rule(Parser *p);
 static void *_tmp_233_rule(Parser *p);
@@ -1067,11 +1095,11 @@ static void *_tmp_236_rule(Parser *p);
 static void *_tmp_237_rule(Parser *p);
 static void *_tmp_238_rule(Parser *p);
 static void *_tmp_239_rule(Parser *p);
-static asdl_seq *_loop0_240_rule(Parser *p);
+static void *_tmp_240_rule(Parser *p);
 static void *_tmp_241_rule(Parser *p);
 static void *_tmp_242_rule(Parser *p);
 static void *_tmp_243_rule(Parser *p);
-static void *_tmp_244_rule(Parser *p);
+static asdl_seq *_loop0_244_rule(Parser *p);
 static void *_tmp_245_rule(Parser *p);
 static void *_tmp_246_rule(Parser *p);
 static void *_tmp_247_rule(Parser *p);
@@ -1100,6 +1128,15 @@ static void *_tmp_269_rule(Parser *p);
 static void *_tmp_270_rule(Parser *p);
 static void *_tmp_271_rule(Parser *p);
 static void *_tmp_272_rule(Parser *p);
+static void *_tmp_273_rule(Parser *p);
+static asdl_seq *_loop0_275_rule(Parser *p);
+static asdl_seq *_gather_274_rule(Parser *p);
+static void *_tmp_276_rule(Parser *p);
+static void *_tmp_277_rule(Parser *p);
+static void *_tmp_278_rule(Parser *p);
+static void *_tmp_279_rule(Parser *p);
+static void *_tmp_280_rule(Parser *p);
+static void *_tmp_281_rule(Parser *p);
 
 
 // file: statements? $
@@ -1107,8 +1144,7 @@ static mod_ty
 file_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1154,8 +1190,7 @@ static mod_ty
 interactive_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1198,8 +1233,7 @@ static mod_ty
 eval_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1248,8 +1282,7 @@ static mod_ty
 func_type_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1305,63 +1338,12 @@ func_type_rule(Parser *p)
     return _res;
 }
 
-// fstring: FSTRING_START fstring_middle* FSTRING_END
-static expr_ty
-fstring_rule(Parser *p)
-{
-    if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-    }
-    if (p->error_indicator) {
-        p->level--;
-        return NULL;
-    }
-    expr_ty _res = NULL;
-    int _mark = p->mark;
-    { // FSTRING_START fstring_middle* FSTRING_END
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> fstring[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "FSTRING_START fstring_middle* FSTRING_END"));
-        Token * a;
-        asdl_seq * b;
-        Token * c;
-        if (
-            (a = _PyPegen_expect_token(p, FSTRING_START))  // token='FSTRING_START'
-            &&
-            (b = _loop0_3_rule(p))  // fstring_middle*
-            &&
-            (c = _PyPegen_expect_token(p, FSTRING_END))  // token='FSTRING_END'
-        )
-        {
-            D(fprintf(stderr, "%*c+ fstring[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "FSTRING_START fstring_middle* FSTRING_END"));
-            _res = _PyPegen_joined_str ( p , a , ( asdl_expr_seq* ) b , c );
-            if (_res == NULL && PyErr_Occurred()) {
-                p->error_indicator = 1;
-                p->level--;
-                return NULL;
-            }
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s fstring[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "FSTRING_START fstring_middle* FSTRING_END"));
-    }
-    _res = NULL;
-  done:
-    p->level--;
-    return _res;
-}
-
 // statements: statement+
 static asdl_stmt_seq*
 statements_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1377,7 +1359,7 @@ statements_rule(Parser *p)
         D(fprintf(stderr, "%*c> statements[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "statement+"));
         asdl_seq * a;
         if (
-            (a = _loop1_4_rule(p))  // statement+
+            (a = _loop1_3_rule(p))  // statement+
         )
         {
             D(fprintf(stderr, "%*c+ statements[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "statement+"));
@@ -1404,8 +1386,7 @@ static asdl_stmt_seq*
 statement_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1472,8 +1453,7 @@ static asdl_stmt_seq*
 statement_newline_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1604,8 +1584,7 @@ static asdl_stmt_seq*
 simple_stmts_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1653,7 +1632,7 @@ simple_stmts_rule(Parser *p)
         asdl_stmt_seq* a;
         Token * newline_var;
         if (
-            (a = (asdl_stmt_seq*)_gather_5_rule(p))  // ';'.simple_stmt+
+            (a = (asdl_stmt_seq*)_gather_4_rule(p))  // ';'.simple_stmt+
             &&
             (_opt_var = _PyPegen_expect_token(p, 13), !p->error_indicator)  // ';'?
             &&
@@ -1681,6 +1660,7 @@ simple_stmts_rule(Parser *p)
 
 // simple_stmt:
 //     | assignment
+//     | &"type" type_alias
 //     | star_expressions
 //     | &'return' return_stmt
 //     | &('import' | 'from') import_stmt
@@ -1697,8 +1677,7 @@ static stmt_ty
 simple_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -1738,6 +1717,27 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c%s simple_stmt[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "assignment"));
     }
+    { // &"type" type_alias
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&\"type\" type_alias"));
+        stmt_ty type_alias_var;
+        if (
+            _PyPegen_lookahead_with_string(1, _PyPegen_expect_soft_keyword, p, "type")
+            &&
+            (type_alias_var = type_alias_rule(p))  // type_alias
+        )
+        {
+            D(fprintf(stderr, "%*c+ simple_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&\"type\" type_alias"));
+            _res = type_alias_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s simple_stmt[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&\"type\" type_alias"));
+    }
     { // star_expressions
         if (p->error_indicator) {
             p->level--;
@@ -1779,7 +1779,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'return' return_stmt"));
         stmt_ty return_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 519)  // token='return'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 522)  // token='return'
             &&
             (return_stmt_var = return_stmt_rule(p))  // return_stmt
         )
@@ -1800,7 +1800,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('import' | 'from') import_stmt"));
         stmt_ty import_stmt_var;
         if (
-            _PyPegen_lookahead(1, _tmp_7_rule, p)
+            _PyPegen_lookahead(1, _tmp_6_rule, p)
             &&
             (import_stmt_var = import_stmt_rule(p))  // import_stmt
         )
@@ -1821,7 +1821,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'raise' raise_stmt"));
         stmt_ty raise_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 522)  // token='raise'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 525)  // token='raise'
             &&
             (raise_stmt_var = raise_stmt_rule(p))  // raise_stmt
         )
@@ -1875,7 +1875,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'del' del_stmt"));
         stmt_ty del_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 604)  // token='del'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 613)  // token='del'
             &&
             (del_stmt_var = del_stmt_rule(p))  // del_stmt
         )
@@ -1896,7 +1896,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'yield' yield_stmt"));
         stmt_ty yield_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 573)  // token='yield'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 580)  // token='yield'
             &&
             (yield_stmt_var = yield_stmt_rule(p))  // yield_stmt
         )
@@ -1917,7 +1917,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'assert' assert_stmt"));
         stmt_ty assert_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 526)  // token='assert'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 529)  // token='assert'
             &&
             (assert_stmt_var = assert_stmt_rule(p))  // assert_stmt
         )
@@ -2004,7 +2004,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'global' global_stmt"));
         stmt_ty global_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 523)  // token='global'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 526)  // token='global'
             &&
             (global_stmt_var = global_stmt_rule(p))  // global_stmt
         )
@@ -2025,7 +2025,7 @@ simple_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> simple_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'nonlocal' nonlocal_stmt"));
         stmt_ty nonlocal_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 524)  // token='nonlocal'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 527)  // token='nonlocal'
             &&
             (nonlocal_stmt_var = nonlocal_stmt_rule(p))  // nonlocal_stmt
         )
@@ -2046,11 +2046,12 @@ simple_stmt_rule(Parser *p)
 }
 
 // compound_stmt:
-//     | &('def' | '@' | ASYNC) function_def
+//     | invalid_compound_stmt
+//     | &('def' | '@' | 'async') function_def
 //     | &'if' if_stmt
 //     | &('class' | '@') class_def
-//     | &('with' | ASYNC) with_stmt
-//     | &('for' | ASYNC) for_stmt
+//     | &('with' | 'async') with_stmt
+//     | &('for' | 'async') for_stmt
 //     | &'try' try_stmt
 //     | &'while' while_stmt
 //     | match_stmt
@@ -2058,8 +2059,7 @@ static stmt_ty
 compound_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -2067,26 +2067,45 @@ compound_stmt_rule(Parser *p)
     }
     stmt_ty _res = NULL;
     int _mark = p->mark;
-    { // &('def' | '@' | ASYNC) function_def
+    if (p->call_invalid_rules) { // invalid_compound_stmt
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "invalid_compound_stmt"));
+        void *invalid_compound_stmt_var;
+        if (
+            (invalid_compound_stmt_var = invalid_compound_stmt_rule(p))  // invalid_compound_stmt
+        )
+        {
+            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "invalid_compound_stmt"));
+            _res = invalid_compound_stmt_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "invalid_compound_stmt"));
+    }
+    { // &('def' | '@' | 'async') function_def
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('def' | '@' | ASYNC) function_def"));
+        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('def' | '@' | 'async') function_def"));
         stmt_ty function_def_var;
         if (
-            _PyPegen_lookahead(1, _tmp_8_rule, p)
+            _PyPegen_lookahead(1, _tmp_7_rule, p)
             &&
             (function_def_var = function_def_rule(p))  // function_def
         )
         {
-            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&('def' | '@' | ASYNC) function_def"));
+            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&('def' | '@' | 'async') function_def"));
             _res = function_def_var;
             goto done;
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('def' | '@' | ASYNC) function_def"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('def' | '@' | 'async') function_def"));
     }
     { // &'if' if_stmt
         if (p->error_indicator) {
@@ -2096,7 +2115,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'if' if_stmt"));
         stmt_ty if_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 642)  // token='if'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 658)  // token='if'
             &&
             (if_stmt_var = if_stmt_rule(p))  // if_stmt
         )
@@ -2117,7 +2136,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('class' | '@') class_def"));
         stmt_ty class_def_var;
         if (
-            _PyPegen_lookahead(1, _tmp_9_rule, p)
+            _PyPegen_lookahead(1, _tmp_8_rule, p)
             &&
             (class_def_var = class_def_rule(p))  // class_def
         )
@@ -2130,47 +2149,47 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c%s compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('class' | '@') class_def"));
     }
-    { // &('with' | ASYNC) with_stmt
+    { // &('with' | 'async') with_stmt
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('with' | ASYNC) with_stmt"));
+        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('with' | 'async') with_stmt"));
         stmt_ty with_stmt_var;
         if (
-            _PyPegen_lookahead(1, _tmp_10_rule, p)
+            _PyPegen_lookahead(1, _tmp_9_rule, p)
             &&
             (with_stmt_var = with_stmt_rule(p))  // with_stmt
         )
         {
-            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&('with' | ASYNC) with_stmt"));
+            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&('with' | 'async') with_stmt"));
             _res = with_stmt_var;
             goto done;
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('with' | ASYNC) with_stmt"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('with' | 'async') with_stmt"));
     }
-    { // &('for' | ASYNC) for_stmt
+    { // &('for' | 'async') for_stmt
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('for' | ASYNC) for_stmt"));
+        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&('for' | 'async') for_stmt"));
         stmt_ty for_stmt_var;
         if (
-            _PyPegen_lookahead(1, _tmp_11_rule, p)
+            _PyPegen_lookahead(1, _tmp_10_rule, p)
             &&
             (for_stmt_var = for_stmt_rule(p))  // for_stmt
         )
         {
-            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&('for' | ASYNC) for_stmt"));
+            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&('for' | 'async') for_stmt"));
             _res = for_stmt_var;
             goto done;
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('for' | ASYNC) for_stmt"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "&('for' | 'async') for_stmt"));
     }
     { // &'try' try_stmt
         if (p->error_indicator) {
@@ -2180,7 +2199,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'try' try_stmt"));
         stmt_ty try_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 624)  // token='try'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 640)  // token='try'
             &&
             (try_stmt_var = try_stmt_rule(p))  // try_stmt
         )
@@ -2201,7 +2220,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'while' while_stmt"));
         stmt_ty while_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 647)  // token='while'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 663)  // token='while'
             &&
             (while_stmt_var = while_stmt_rule(p))  // while_stmt
         )
@@ -2249,8 +2268,7 @@ static stmt_ty
 assignment_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -2284,7 +2302,7 @@ assignment_rule(Parser *p)
             &&
             (b = expression_rule(p))  // expression
             &&
-            (c = _tmp_12_rule(p), !p->error_indicator)  // ['=' annotated_rhs]
+            (c = _tmp_11_rule(p), !p->error_indicator)  // ['=' annotated_rhs]
         )
         {
             D(fprintf(stderr, "%*c+ assignment[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME ':' expression ['=' annotated_rhs]"));
@@ -2320,13 +2338,13 @@ assignment_rule(Parser *p)
         expr_ty b;
         void *c;
         if (
-            (a = _tmp_13_rule(p))  // '(' single_target ')' | single_subscript_attribute_target
+            (a = _tmp_12_rule(p))  // '(' single_target ')' | single_subscript_attribute_target
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
             (b = expression_rule(p))  // expression
             &&
-            (c = _tmp_14_rule(p), !p->error_indicator)  // ['=' annotated_rhs]
+            (c = _tmp_13_rule(p), !p->error_indicator)  // ['=' annotated_rhs]
         )
         {
             D(fprintf(stderr, "%*c+ assignment[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "('(' single_target ')' | single_subscript_attribute_target) ':' expression ['=' annotated_rhs]"));
@@ -2361,9 +2379,9 @@ assignment_rule(Parser *p)
         void *b;
         void *tc;
         if (
-            (a = (asdl_expr_seq*)_loop1_15_rule(p))  // ((star_targets '='))+
+            (a = (asdl_expr_seq*)_loop1_14_rule(p))  // ((star_targets '='))+
             &&
-            (b = _tmp_16_rule(p))  // yield_expr | star_expressions
+            (b = _tmp_15_rule(p))  // yield_expr | star_expressions
             &&
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 22)  // token='='
             &&
@@ -2409,7 +2427,7 @@ assignment_rule(Parser *p)
             &&
             (_cut_var = 1)
             &&
-            (c = _tmp_17_rule(p))  // yield_expr | star_expressions
+            (c = _tmp_16_rule(p))  // yield_expr | star_expressions
         )
         {
             D(fprintf(stderr, "%*c+ assignment[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "single_target augassign ~ (yield_expr | star_expressions)"));
@@ -2468,8 +2486,7 @@ static expr_ty
 annotated_rhs_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -2539,8 +2556,7 @@ static AugOperator*
 augassign_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -2871,8 +2887,7 @@ static stmt_ty
 return_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -2898,7 +2913,7 @@ return_stmt_rule(Parser *p)
         Token * _keyword;
         void *a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 519))  // token='return'
+            (_keyword = _PyPegen_expect_token(p, 522))  // token='return'
             &&
             (a = star_expressions_rule(p), !p->error_indicator)  // star_expressions?
         )
@@ -2936,8 +2951,7 @@ static stmt_ty
 raise_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -2964,11 +2978,11 @@ raise_stmt_rule(Parser *p)
         expr_ty a;
         void *b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 522))  // token='raise'
+            (_keyword = _PyPegen_expect_token(p, 525))  // token='raise'
             &&
             (a = expression_rule(p))  // expression
             &&
-            (b = _tmp_18_rule(p), !p->error_indicator)  // ['from' expression]
+            (b = _tmp_17_rule(p), !p->error_indicator)  // ['from' expression]
         )
         {
             D(fprintf(stderr, "%*c+ raise_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'raise' expression ['from' expression]"));
@@ -3001,7 +3015,7 @@ raise_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> raise_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'raise'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 522))  // token='raise'
+            (_keyword = _PyPegen_expect_token(p, 525))  // token='raise'
         )
         {
             D(fprintf(stderr, "%*c+ raise_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'raise'"));
@@ -3037,8 +3051,7 @@ static stmt_ty
 global_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3064,9 +3077,9 @@ global_stmt_rule(Parser *p)
         Token * _keyword;
         asdl_expr_seq* a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 523))  // token='global'
+            (_keyword = _PyPegen_expect_token(p, 526))  // token='global'
             &&
-            (a = (asdl_expr_seq*)_gather_19_rule(p))  // ','.NAME+
+            (a = (asdl_expr_seq*)_gather_18_rule(p))  // ','.NAME+
         )
         {
             D(fprintf(stderr, "%*c+ global_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'global' ','.NAME+"));
@@ -3102,8 +3115,7 @@ static stmt_ty
 nonlocal_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3129,9 +3141,9 @@ nonlocal_stmt_rule(Parser *p)
         Token * _keyword;
         asdl_expr_seq* a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 524))  // token='nonlocal'
+            (_keyword = _PyPegen_expect_token(p, 527))  // token='nonlocal'
             &&
-            (a = (asdl_expr_seq*)_gather_21_rule(p))  // ','.NAME+
+            (a = (asdl_expr_seq*)_gather_20_rule(p))  // ','.NAME+
         )
         {
             D(fprintf(stderr, "%*c+ nonlocal_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'nonlocal' ','.NAME+"));
@@ -3167,8 +3179,7 @@ static stmt_ty
 del_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3194,11 +3205,11 @@ del_stmt_rule(Parser *p)
         Token * _keyword;
         asdl_expr_seq* a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 604))  // token='del'
+            (_keyword = _PyPegen_expect_token(p, 613))  // token='del'
             &&
             (a = del_targets_rule(p))  // del_targets
             &&
-            _PyPegen_lookahead(1, _tmp_23_rule, p)
+            _PyPegen_lookahead(1, _tmp_22_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ del_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'del' del_targets &(';' | NEWLINE)"));
@@ -3253,8 +3264,7 @@ static stmt_ty
 yield_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3315,8 +3325,7 @@ static stmt_ty
 assert_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3343,11 +3352,11 @@ assert_stmt_rule(Parser *p)
         expr_ty a;
         void *b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 526))  // token='assert'
+            (_keyword = _PyPegen_expect_token(p, 529))  // token='assert'
             &&
             (a = expression_rule(p))  // expression
             &&
-            (b = _tmp_24_rule(p), !p->error_indicator)  // [',' expression]
+            (b = _tmp_23_rule(p), !p->error_indicator)  // [',' expression]
         )
         {
             D(fprintf(stderr, "%*c+ assert_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'assert' expression [',' expression]"));
@@ -3383,8 +3392,7 @@ static stmt_ty
 import_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3460,8 +3468,7 @@ static stmt_ty
 import_name_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3487,7 +3494,7 @@ import_name_rule(Parser *p)
         Token * _keyword;
         asdl_alias_seq* a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 607))  // token='import'
+            (_keyword = _PyPegen_expect_token(p, 617))  // token='import'
             &&
             (a = dotted_as_names_rule(p))  // dotted_as_names
         )
@@ -3527,8 +3534,7 @@ static stmt_ty
 import_from_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3557,13 +3563,13 @@ import_from_rule(Parser *p)
         expr_ty b;
         asdl_alias_seq* c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 608))  // token='from'
+            (_keyword = _PyPegen_expect_token(p, 618))  // token='from'
             &&
-            (a = _loop0_25_rule(p))  // (('.' | '...'))*
+            (a = _loop0_24_rule(p))  // (('.' | '...'))*
             &&
             (b = dotted_name_rule(p))  // dotted_name
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 607))  // token='import'
+            (_keyword_1 = _PyPegen_expect_token(p, 617))  // token='import'
             &&
             (c = import_from_targets_rule(p))  // import_from_targets
         )
@@ -3601,11 +3607,11 @@ import_from_rule(Parser *p)
         asdl_seq * a;
         asdl_alias_seq* b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 608))  // token='from'
+            (_keyword = _PyPegen_expect_token(p, 618))  // token='from'
             &&
-            (a = _loop1_26_rule(p))  // (('.' | '...'))+
+            (a = _loop1_25_rule(p))  // (('.' | '...'))+
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 607))  // token='import'
+            (_keyword_1 = _PyPegen_expect_token(p, 617))  // token='import'
             &&
             (b = import_from_targets_rule(p))  // import_from_targets
         )
@@ -3647,8 +3653,7 @@ static asdl_alias_seq*
 import_from_targets_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3783,8 +3788,7 @@ static asdl_alias_seq*
 import_from_as_names_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3800,7 +3804,7 @@ import_from_as_names_rule(Parser *p)
         D(fprintf(stderr, "%*c> import_from_as_names[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.import_from_as_name+"));
         asdl_alias_seq* a;
         if (
-            (a = (asdl_alias_seq*)_gather_27_rule(p))  // ','.import_from_as_name+
+            (a = (asdl_alias_seq*)_gather_26_rule(p))  // ','.import_from_as_name+
         )
         {
             D(fprintf(stderr, "%*c+ import_from_as_names[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.import_from_as_name+"));
@@ -3827,8 +3831,7 @@ static alias_ty
 import_from_as_name_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3856,7 +3859,7 @@ import_from_as_name_rule(Parser *p)
         if (
             (a = _PyPegen_name_token(p))  // NAME
             &&
-            (b = _tmp_29_rule(p), !p->error_indicator)  // ['as' NAME]
+            (b = _tmp_28_rule(p), !p->error_indicator)  // ['as' NAME]
         )
         {
             D(fprintf(stderr, "%*c+ import_from_as_name[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME ['as' NAME]"));
@@ -3892,8 +3895,7 @@ static asdl_alias_seq*
 dotted_as_names_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3909,7 +3911,7 @@ dotted_as_names_rule(Parser *p)
         D(fprintf(stderr, "%*c> dotted_as_names[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.dotted_as_name+"));
         asdl_alias_seq* a;
         if (
-            (a = (asdl_alias_seq*)_gather_30_rule(p))  // ','.dotted_as_name+
+            (a = (asdl_alias_seq*)_gather_29_rule(p))  // ','.dotted_as_name+
         )
         {
             D(fprintf(stderr, "%*c+ dotted_as_names[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.dotted_as_name+"));
@@ -3936,8 +3938,7 @@ static alias_ty
 dotted_as_name_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -3965,7 +3966,7 @@ dotted_as_name_rule(Parser *p)
         if (
             (a = dotted_name_rule(p))  // dotted_name
             &&
-            (b = _tmp_32_rule(p), !p->error_indicator)  // ['as' NAME]
+            (b = _tmp_31_rule(p), !p->error_indicator)  // ['as' NAME]
         )
         {
             D(fprintf(stderr, "%*c+ dotted_as_name[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dotted_name ['as' NAME]"));
@@ -4003,8 +4004,7 @@ static expr_ty
 dotted_name_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, dotted_name_type, &_res)) {
@@ -4038,8 +4038,7 @@ static expr_ty
 dotted_name_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4107,8 +4106,7 @@ static asdl_stmt_seq*
 block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4203,8 +4201,7 @@ static asdl_expr_seq*
 decorators_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4220,7 +4217,7 @@ decorators_rule(Parser *p)
         D(fprintf(stderr, "%*c> decorators[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(('@' named_expression NEWLINE))+"));
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_loop1_33_rule(p))  // (('@' named_expression NEWLINE))+
+            (a = (asdl_expr_seq*)_loop1_32_rule(p))  // (('@' named_expression NEWLINE))+
         )
         {
             D(fprintf(stderr, "%*c+ decorators[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(('@' named_expression NEWLINE))+"));
@@ -4247,8 +4244,7 @@ static stmt_ty
 class_def_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4308,13 +4304,14 @@ class_def_rule(Parser *p)
     return _res;
 }
 
-// class_def_raw: invalid_class_def_raw | 'class' NAME ['(' arguments? ')'] ':' block
+// class_def_raw:
+//     | invalid_class_def_raw
+//     | 'class' NAME type_params? ['(' arguments? ')'] ':' block
 static stmt_ty
 class_def_raw_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4350,30 +4347,33 @@ class_def_raw_rule(Parser *p)
         D(fprintf(stderr, "%*c%s class_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "invalid_class_def_raw"));
     }
-    { // 'class' NAME ['(' arguments? ')'] ':' block
+    { // 'class' NAME type_params? ['(' arguments? ')'] ':' block
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> class_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class' NAME ['(' arguments? ')'] ':' block"));
+        D(fprintf(stderr, "%*c> class_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] ':' block"));
         Token * _keyword;
         Token * _literal;
         expr_ty a;
         void *b;
         asdl_stmt_seq* c;
+        void *t;
         if (
-            (_keyword = _PyPegen_expect_token(p, 654))  // token='class'
+            (_keyword = _PyPegen_expect_token(p, 673))  // token='class'
             &&
             (a = _PyPegen_name_token(p))  // NAME
             &&
-            (b = _tmp_34_rule(p), !p->error_indicator)  // ['(' arguments? ')']
+            (t = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
+            (b = _tmp_33_rule(p), !p->error_indicator)  // ['(' arguments? ')']
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
             (c = block_rule(p))  // block
         )
         {
-            D(fprintf(stderr, "%*c+ class_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class' NAME ['(' arguments? ')'] ':' block"));
+            D(fprintf(stderr, "%*c+ class_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] ':' block"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -4383,7 +4383,7 @@ class_def_raw_rule(Parser *p)
             UNUSED(_end_lineno); // Only used by EXTRA macro
             int _end_col_offset = _token->end_col_offset;
             UNUSED(_end_col_offset); // Only used by EXTRA macro
-            _res = _PyAST_ClassDef ( a -> v . Name . id , ( b ) ? ( ( expr_ty ) b ) -> v . Call . args : NULL , ( b ) ? ( ( expr_ty ) b ) -> v . Call . keywords : NULL , c , NULL , EXTRA );
+            _res = _PyAST_ClassDef ( a -> v . Name . id , ( b ) ? ( ( expr_ty ) b ) -> v . Call . args : NULL , ( b ) ? ( ( expr_ty ) b ) -> v . Call . keywords : NULL , c , NULL , t , EXTRA );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 p->level--;
@@ -4393,7 +4393,7 @@ class_def_raw_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s class_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class' NAME ['(' arguments? ')'] ':' block"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] ':' block"));
     }
     _res = NULL;
   done:
@@ -4406,8 +4406,7 @@ static stmt_ty
 function_def_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4469,14 +4468,13 @@ function_def_rule(Parser *p)
 
 // function_def_raw:
 //     | invalid_def_raw
-//     | 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
-//     | ASYNC 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
+//     | 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
+//     | 'async' 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
 static stmt_ty
 function_def_raw_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4512,12 +4510,12 @@ function_def_raw_rule(Parser *p)
         D(fprintf(stderr, "%*c%s function_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "invalid_def_raw"));
     }
-    { // 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
+    { // 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> function_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
+        D(fprintf(stderr, "%*c> function_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
         Token * _keyword;
         Token * _literal;
         Token * _literal_1;
@@ -4526,19 +4524,22 @@ function_def_raw_rule(Parser *p)
         asdl_stmt_seq* b;
         expr_ty n;
         void *params;
+        void *t;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 652))  // token='def'
+            (_keyword = _PyPegen_expect_token(p, 671))  // token='def'
             &&
             (n = _PyPegen_name_token(p))  // NAME
             &&
+            (t = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
             (_literal = _PyPegen_expect_forced_token(p, 7, "("))  // forced_token='('
             &&
             (params = params_rule(p), !p->error_indicator)  // params?
             &&
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
             &&
-            (a = _tmp_35_rule(p), !p->error_indicator)  // ['->' expression]
+            (a = _tmp_34_rule(p), !p->error_indicator)  // ['->' expression]
             &&
             (_literal_2 = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -4547,7 +4548,7 @@ function_def_raw_rule(Parser *p)
             (b = block_rule(p))  // block
         )
         {
-            D(fprintf(stderr, "%*c+ function_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
+            D(fprintf(stderr, "%*c+ function_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -4557,7 +4558,7 @@ function_def_raw_rule(Parser *p)
             UNUSED(_end_lineno); // Only used by EXTRA macro
             int _end_col_offset = _token->end_col_offset;
             UNUSED(_end_col_offset); // Only used by EXTRA macro
-            _res = _PyAST_FunctionDef ( n -> v . Name . id , ( params ) ? params : CHECK ( arguments_ty , _PyPegen_empty_arguments ( p ) ) , b , NULL , a , NEW_TYPE_COMMENT ( p , tc ) , EXTRA );
+            _res = _PyAST_FunctionDef ( n -> v . Name . id , ( params ) ? params : CHECK ( arguments_ty , _PyPegen_empty_arguments ( p ) ) , b , NULL , a , NEW_TYPE_COMMENT ( p , tc ) , t , EXTRA );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 p->level--;
@@ -4567,38 +4568,41 @@ function_def_raw_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s function_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
     }
-    { // ASYNC 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
+    { // 'async' 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> function_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
+        D(fprintf(stderr, "%*c> function_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async' 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
         Token * _keyword;
+        Token * _keyword_1;
         Token * _literal;
         Token * _literal_1;
         Token * _literal_2;
         void *a;
-        Token * async_var;
         asdl_stmt_seq* b;
         expr_ty n;
         void *params;
+        void *t;
         void *tc;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
             &&
-            (_keyword = _PyPegen_expect_token(p, 652))  // token='def'
+            (_keyword_1 = _PyPegen_expect_token(p, 671))  // token='def'
             &&
             (n = _PyPegen_name_token(p))  // NAME
             &&
+            (t = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
             (_literal = _PyPegen_expect_forced_token(p, 7, "("))  // forced_token='('
             &&
             (params = params_rule(p), !p->error_indicator)  // params?
             &&
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
             &&
-            (a = _tmp_36_rule(p), !p->error_indicator)  // ['->' expression]
+            (a = _tmp_35_rule(p), !p->error_indicator)  // ['->' expression]
             &&
             (_literal_2 = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -4607,7 +4611,7 @@ function_def_raw_rule(Parser *p)
             (b = block_rule(p))  // block
         )
         {
-            D(fprintf(stderr, "%*c+ function_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
+            D(fprintf(stderr, "%*c+ function_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async' 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -4617,7 +4621,7 @@ function_def_raw_rule(Parser *p)
             UNUSED(_end_lineno); // Only used by EXTRA macro
             int _end_col_offset = _token->end_col_offset;
             UNUSED(_end_col_offset); // Only used by EXTRA macro
-            _res = CHECK_VERSION ( stmt_ty , 5 , "Async functions are" , _PyAST_AsyncFunctionDef ( n -> v . Name . id , ( params ) ? params : CHECK ( arguments_ty , _PyPegen_empty_arguments ( p ) ) , b , NULL , a , NEW_TYPE_COMMENT ( p , tc ) , EXTRA ) );
+            _res = CHECK_VERSION ( stmt_ty , 5 , "Async functions are" , _PyAST_AsyncFunctionDef ( n -> v . Name . id , ( params ) ? params : CHECK ( arguments_ty , _PyPegen_empty_arguments ( p ) ) , b , NULL , a , NEW_TYPE_COMMENT ( p , tc ) , t , EXTRA ) );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 p->level--;
@@ -4627,7 +4631,7 @@ function_def_raw_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s function_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC 'def' NAME &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async' 'def' NAME type_params? &&'(' params? ')' ['->' expression] &&':' func_type_comment? block"));
     }
     _res = NULL;
   done:
@@ -4640,8 +4644,7 @@ static arguments_ty
 params_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4703,8 +4706,7 @@ static arguments_ty
 parameters_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4725,9 +4727,9 @@ parameters_rule(Parser *p)
         if (
             (a = slash_no_default_rule(p))  // slash_no_default
             &&
-            (b = (asdl_arg_seq*)_loop0_37_rule(p))  // param_no_default*
+            (b = (asdl_arg_seq*)_loop0_36_rule(p))  // param_no_default*
             &&
-            (c = _loop0_38_rule(p))  // param_with_default*
+            (c = _loop0_37_rule(p))  // param_with_default*
             &&
             (d = star_etc_rule(p), !p->error_indicator)  // star_etc?
         )
@@ -4757,7 +4759,7 @@ parameters_rule(Parser *p)
         if (
             (a = slash_with_default_rule(p))  // slash_with_default
             &&
-            (b = _loop0_39_rule(p))  // param_with_default*
+            (b = _loop0_38_rule(p))  // param_with_default*
             &&
             (c = star_etc_rule(p), !p->error_indicator)  // star_etc?
         )
@@ -4785,9 +4787,9 @@ parameters_rule(Parser *p)
         asdl_seq * b;
         void *c;
         if (
-            (a = (asdl_arg_seq*)_loop1_40_rule(p))  // param_no_default+
+            (a = (asdl_arg_seq*)_loop1_39_rule(p))  // param_no_default+
             &&
-            (b = _loop0_41_rule(p))  // param_with_default*
+            (b = _loop0_40_rule(p))  // param_with_default*
             &&
             (c = star_etc_rule(p), !p->error_indicator)  // star_etc?
         )
@@ -4814,7 +4816,7 @@ parameters_rule(Parser *p)
         asdl_seq * a;
         void *b;
         if (
-            (a = _loop1_42_rule(p))  // param_with_default+
+            (a = _loop1_41_rule(p))  // param_with_default+
             &&
             (b = star_etc_rule(p), !p->error_indicator)  // star_etc?
         )
@@ -4867,8 +4869,7 @@ static asdl_arg_seq*
 slash_no_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4886,7 +4887,7 @@ slash_no_default_rule(Parser *p)
         Token * _literal_1;
         asdl_arg_seq* a;
         if (
-            (a = (asdl_arg_seq*)_loop1_43_rule(p))  // param_no_default+
+            (a = (asdl_arg_seq*)_loop1_42_rule(p))  // param_no_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -4915,7 +4916,7 @@ slash_no_default_rule(Parser *p)
         Token * _literal;
         asdl_arg_seq* a;
         if (
-            (a = (asdl_arg_seq*)_loop1_44_rule(p))  // param_no_default+
+            (a = (asdl_arg_seq*)_loop1_43_rule(p))  // param_no_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -4948,8 +4949,7 @@ static SlashWithDefault*
 slash_with_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -4968,9 +4968,9 @@ slash_with_default_rule(Parser *p)
         asdl_seq * a;
         asdl_seq * b;
         if (
-            (a = _loop0_45_rule(p))  // param_no_default*
+            (a = _loop0_44_rule(p))  // param_no_default*
             &&
-            (b = _loop1_46_rule(p))  // param_with_default+
+            (b = _loop1_45_rule(p))  // param_with_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -5000,9 +5000,9 @@ slash_with_default_rule(Parser *p)
         asdl_seq * a;
         asdl_seq * b;
         if (
-            (a = _loop0_47_rule(p))  // param_no_default*
+            (a = _loop0_46_rule(p))  // param_no_default*
             &&
-            (b = _loop1_48_rule(p))  // param_with_default+
+            (b = _loop1_47_rule(p))  // param_with_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -5038,8 +5038,7 @@ static StarEtc*
 star_etc_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5081,7 +5080,7 @@ star_etc_rule(Parser *p)
             &&
             (a = param_no_default_rule(p))  // param_no_default
             &&
-            (b = _loop0_49_rule(p))  // param_maybe_default*
+            (b = _loop0_48_rule(p))  // param_maybe_default*
             &&
             (c = kwds_rule(p), !p->error_indicator)  // kwds?
         )
@@ -5114,7 +5113,7 @@ star_etc_rule(Parser *p)
             &&
             (a = param_no_default_star_annotation_rule(p))  // param_no_default_star_annotation
             &&
-            (b = _loop0_50_rule(p))  // param_maybe_default*
+            (b = _loop0_49_rule(p))  // param_maybe_default*
             &&
             (c = kwds_rule(p), !p->error_indicator)  // kwds?
         )
@@ -5147,7 +5146,7 @@ star_etc_rule(Parser *p)
             &&
             (_literal_1 = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (b = _loop1_51_rule(p))  // param_maybe_default+
+            (b = _loop1_50_rule(p))  // param_maybe_default+
             &&
             (c = kwds_rule(p), !p->error_indicator)  // kwds?
         )
@@ -5200,8 +5199,7 @@ static arg_ty
 kwds_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5266,8 +5264,7 @@ static arg_ty
 param_no_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5347,8 +5344,7 @@ static arg_ty
 param_no_default_star_annotation_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5426,8 +5422,7 @@ static NameDefaultPair*
 param_with_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5513,8 +5508,7 @@ static NameDefaultPair*
 param_maybe_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5598,8 +5592,7 @@ static arg_ty
 param_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5663,8 +5656,7 @@ static arg_ty
 param_star_annotation_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5728,8 +5720,7 @@ static expr_ty
 annotation_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5775,8 +5766,7 @@ static expr_ty
 star_annotation_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5822,8 +5812,7 @@ static expr_ty
 default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5891,8 +5880,7 @@ static stmt_ty
 if_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -5940,7 +5928,7 @@ if_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         stmt_ty c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -5985,7 +5973,7 @@ if_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6032,8 +6020,7 @@ static stmt_ty
 elif_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6081,7 +6068,7 @@ elif_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         stmt_ty c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='elif'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='elif'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6126,7 +6113,7 @@ elif_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='elif'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='elif'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6170,8 +6157,7 @@ static asdl_stmt_seq*
 else_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6208,7 +6194,7 @@ else_block_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 645))  // token='else'
+            (_keyword = _PyPegen_expect_token(p, 661))  // token='else'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -6239,8 +6225,7 @@ static stmt_ty
 while_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6288,7 +6273,7 @@ while_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 647))  // token='while'
+            (_keyword = _PyPegen_expect_token(p, 663))  // token='while'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6330,14 +6315,13 @@ while_stmt_rule(Parser *p)
 // for_stmt:
 //     | invalid_for_stmt
 //     | 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?
-//     | ASYNC 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?
+//     | 'async' 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?
 //     | invalid_for_target
 static stmt_ty
 for_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6389,11 +6373,11 @@ for_stmt_rule(Parser *p)
         expr_ty t;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (t = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (_cut_var = 1)
             &&
@@ -6434,30 +6418,30 @@ for_stmt_rule(Parser *p)
             return NULL;
         }
     }
-    { // ASYNC 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?
+    { // 'async' 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> for_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?"));
+        D(fprintf(stderr, "%*c> for_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async' 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?"));
         int _cut_var = 0;
         Token * _keyword;
         Token * _keyword_1;
+        Token * _keyword_2;
         Token * _literal;
-        Token * async_var;
         asdl_stmt_seq* b;
         void *el;
         expr_ty ex;
         expr_ty t;
         void *tc;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
             &&
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword_1 = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (t = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword_2 = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (_cut_var = 1)
             &&
@@ -6472,7 +6456,7 @@ for_stmt_rule(Parser *p)
             (el = else_block_rule(p), !p->error_indicator)  // else_block?
         )
         {
-            D(fprintf(stderr, "%*c+ for_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?"));
+            D(fprintf(stderr, "%*c+ for_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async' 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -6492,7 +6476,7 @@ for_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s for_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async' 'for' star_targets 'in' ~ star_expressions ':' TYPE_COMMENT? block else_block?"));
         if (_cut_var) {
             p->level--;
             return NULL;
@@ -6525,17 +6509,16 @@ for_stmt_rule(Parser *p)
 
 // with_stmt:
 //     | invalid_with_stmt_indent
-//     | 'with' '(' ','.with_item+ ','? ')' ':' block
+//     | 'with' '(' ','.with_item+ ','? ')' ':' TYPE_COMMENT? block
 //     | 'with' ','.with_item+ ':' TYPE_COMMENT? block
-//     | ASYNC 'with' '(' ','.with_item+ ','? ')' ':' block
-//     | ASYNC 'with' ','.with_item+ ':' TYPE_COMMENT? block
+//     | 'async' 'with' '(' ','.with_item+ ','? ')' ':' block
+//     | 'async' 'with' ','.with_item+ ':' TYPE_COMMENT? block
 //     | invalid_with_stmt
 static stmt_ty
 with_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6571,12 +6554,12 @@ with_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c%s with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "invalid_with_stmt_indent"));
     }
-    { // 'with' '(' ','.with_item+ ','? ')' ':' block
+    { // 'with' '(' ','.with_item+ ','? ')' ':' TYPE_COMMENT? block
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'with' '(' ','.with_item+ ','? ')' ':' block"));
+        D(fprintf(stderr, "%*c> with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'with' '(' ','.with_item+ ','? ')' ':' TYPE_COMMENT? block"));
         Token * _keyword;
         Token * _literal;
         Token * _literal_1;
@@ -6585,12 +6568,13 @@ with_stmt_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_withitem_seq* a;
         asdl_stmt_seq* b;
+        void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 631))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (a = (asdl_withitem_seq*)_gather_52_rule(p))  // ','.with_item+
+            (a = (asdl_withitem_seq*)_gather_51_rule(p))  // ','.with_item+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
             &&
@@ -6598,10 +6582,12 @@ with_stmt_rule(Parser *p)
             &&
             (_literal_2 = _PyPegen_expect_token(p, 11))  // token=':'
             &&
+            (tc = _PyPegen_expect_token(p, TYPE_COMMENT), !p->error_indicator)  // TYPE_COMMENT?
+            &&
             (b = block_rule(p))  // block
         )
         {
-            D(fprintf(stderr, "%*c+ with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'with' '(' ','.with_item+ ','? ')' ':' block"));
+            D(fprintf(stderr, "%*c+ with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'with' '(' ','.with_item+ ','? ')' ':' TYPE_COMMENT? block"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -6611,7 +6597,7 @@ with_stmt_rule(Parser *p)
             UNUSED(_end_lineno); // Only used by EXTRA macro
             int _end_col_offset = _token->end_col_offset;
             UNUSED(_end_col_offset); // Only used by EXTRA macro
-            _res = CHECK_VERSION ( stmt_ty , 9 , "Parenthesized context managers are" , _PyAST_With ( a , b , NULL , EXTRA ) );
+            _res = CHECK_VERSION ( stmt_ty , 9 , "Parenthesized context managers are" , _PyAST_With ( a , b , NEW_TYPE_COMMENT ( p , tc ) , EXTRA ) );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 p->level--;
@@ -6621,7 +6607,7 @@ with_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'with' '(' ','.with_item+ ','? ')' ':' block"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'with' '(' ','.with_item+ ','? ')' ':' TYPE_COMMENT? block"));
     }
     { // 'with' ','.with_item+ ':' TYPE_COMMENT? block
         if (p->error_indicator) {
@@ -6635,9 +6621,9 @@ with_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 631))  // token='with'
             &&
-            (a = (asdl_withitem_seq*)_gather_54_rule(p))  // ','.with_item+
+            (a = (asdl_withitem_seq*)_gather_53_rule(p))  // ','.with_item+
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -6668,29 +6654,29 @@ with_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c%s with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'with' ','.with_item+ ':' TYPE_COMMENT? block"));
     }
-    { // ASYNC 'with' '(' ','.with_item+ ','? ')' ':' block
+    { // 'async' 'with' '(' ','.with_item+ ','? ')' ':' block
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC 'with' '(' ','.with_item+ ','? ')' ':' block"));
+        D(fprintf(stderr, "%*c> with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async' 'with' '(' ','.with_item+ ','? ')' ':' block"));
         Token * _keyword;
+        Token * _keyword_1;
         Token * _literal;
         Token * _literal_1;
         Token * _literal_2;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_withitem_seq* a;
-        Token * async_var;
         asdl_stmt_seq* b;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
             &&
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword_1 = _PyPegen_expect_token(p, 631))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (a = (asdl_withitem_seq*)_gather_56_rule(p))  // ','.with_item+
+            (a = (asdl_withitem_seq*)_gather_55_rule(p))  // ','.with_item+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
             &&
@@ -6701,7 +6687,7 @@ with_stmt_rule(Parser *p)
             (b = block_rule(p))  // block
         )
         {
-            D(fprintf(stderr, "%*c+ with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC 'with' '(' ','.with_item+ ','? ')' ':' block"));
+            D(fprintf(stderr, "%*c+ with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async' 'with' '(' ','.with_item+ ','? ')' ':' block"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -6721,26 +6707,26 @@ with_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC 'with' '(' ','.with_item+ ','? ')' ':' block"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async' 'with' '(' ','.with_item+ ','? ')' ':' block"));
     }
-    { // ASYNC 'with' ','.with_item+ ':' TYPE_COMMENT? block
+    { // 'async' 'with' ','.with_item+ ':' TYPE_COMMENT? block
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC 'with' ','.with_item+ ':' TYPE_COMMENT? block"));
+        D(fprintf(stderr, "%*c> with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async' 'with' ','.with_item+ ':' TYPE_COMMENT? block"));
         Token * _keyword;
+        Token * _keyword_1;
         Token * _literal;
         asdl_withitem_seq* a;
-        Token * async_var;
         asdl_stmt_seq* b;
         void *tc;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
             &&
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword_1 = _PyPegen_expect_token(p, 631))  // token='with'
             &&
-            (a = (asdl_withitem_seq*)_gather_58_rule(p))  // ','.with_item+
+            (a = (asdl_withitem_seq*)_gather_57_rule(p))  // ','.with_item+
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -6749,7 +6735,7 @@ with_stmt_rule(Parser *p)
             (b = block_rule(p))  // block
         )
         {
-            D(fprintf(stderr, "%*c+ with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC 'with' ','.with_item+ ':' TYPE_COMMENT? block"));
+            D(fprintf(stderr, "%*c+ with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async' 'with' ','.with_item+ ':' TYPE_COMMENT? block"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -6769,7 +6755,7 @@ with_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC 'with' ','.with_item+ ':' TYPE_COMMENT? block"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async' 'with' ','.with_item+ ':' TYPE_COMMENT? block"));
     }
     if (p->call_invalid_rules) { // invalid_with_stmt
         if (p->error_indicator) {
@@ -6804,8 +6790,7 @@ static withitem_ty
 with_item_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6825,11 +6810,11 @@ with_item_rule(Parser *p)
         if (
             (e = expression_rule(p))  // expression
             &&
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (t = star_target_rule(p))  // star_target
             &&
-            _PyPegen_lookahead(1, _tmp_60_rule, p)
+            _PyPegen_lookahead(1, _tmp_59_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ with_item[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression 'as' star_target &(',' | ')' | ':')"));
@@ -6903,8 +6888,7 @@ static stmt_ty
 try_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -6951,7 +6935,7 @@ try_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         asdl_stmt_seq* f;
         if (
-            (_keyword = _PyPegen_expect_token(p, 624))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -6995,13 +6979,13 @@ try_stmt_rule(Parser *p)
         asdl_excepthandler_seq* ex;
         void *f;
         if (
-            (_keyword = _PyPegen_expect_token(p, 624))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
             (b = block_rule(p))  // block
             &&
-            (ex = (asdl_excepthandler_seq*)_loop1_61_rule(p))  // except_block+
+            (ex = (asdl_excepthandler_seq*)_loop1_60_rule(p))  // except_block+
             &&
             (el = else_block_rule(p), !p->error_indicator)  // else_block?
             &&
@@ -7043,13 +7027,13 @@ try_stmt_rule(Parser *p)
         asdl_excepthandler_seq* ex;
         void *f;
         if (
-            (_keyword = _PyPegen_expect_token(p, 624))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
             (b = block_rule(p))  // block
             &&
-            (ex = (asdl_excepthandler_seq*)_loop1_62_rule(p))  // except_star_block+
+            (ex = (asdl_excepthandler_seq*)_loop1_61_rule(p))  // except_star_block+
             &&
             (el = else_block_rule(p), !p->error_indicator)  // else_block?
             &&
@@ -7093,8 +7077,7 @@ static excepthandler_ty
 except_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7142,11 +7125,11 @@ except_block_rule(Parser *p)
         expr_ty e;
         void *t;
         if (
-            (_keyword = _PyPegen_expect_token(p, 637))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (e = expression_rule(p))  // expression
             &&
-            (t = _tmp_63_rule(p), !p->error_indicator)  // ['as' NAME]
+            (t = _tmp_62_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -7185,7 +7168,7 @@ except_block_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 637))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -7247,8 +7230,7 @@ static excepthandler_ty
 except_star_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7297,13 +7279,13 @@ except_star_block_rule(Parser *p)
         expr_ty e;
         void *t;
         if (
-            (_keyword = _PyPegen_expect_token(p, 637))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
             (e = expression_rule(p))  // expression
             &&
-            (t = _tmp_64_rule(p), !p->error_indicator)  // ['as' NAME]
+            (t = _tmp_63_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -7362,8 +7344,7 @@ static asdl_stmt_seq*
 finally_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7400,7 +7381,7 @@ finally_block_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 633))  // token='finally'
+            (_keyword = _PyPegen_expect_token(p, 649))  // token='finally'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -7433,8 +7414,7 @@ static stmt_ty
 match_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7475,7 +7455,7 @@ match_stmt_rule(Parser *p)
             &&
             (indent_var = _PyPegen_expect_token(p, INDENT))  // token='INDENT'
             &&
-            (cases = (asdl_match_case_seq*)_loop1_65_rule(p))  // case_block+
+            (cases = (asdl_match_case_seq*)_loop1_64_rule(p))  // case_block+
             &&
             (dedent_var = _PyPegen_expect_token(p, DEDENT))  // token='DEDENT'
         )
@@ -7532,8 +7512,7 @@ static expr_ty
 subject_expr_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7619,8 +7598,7 @@ static match_case_ty
 case_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7694,8 +7672,7 @@ static expr_ty
 guard_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7712,7 +7689,7 @@ guard_rule(Parser *p)
         Token * _keyword;
         expr_ty guard;
         if (
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (guard = named_expression_rule(p))  // named_expression
         )
@@ -7741,8 +7718,7 @@ static pattern_ty
 patterns_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7822,8 +7798,7 @@ static pattern_ty
 pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7880,8 +7855,7 @@ static pattern_ty
 as_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7910,7 +7884,7 @@ as_pattern_rule(Parser *p)
         if (
             (pattern = or_pattern_rule(p))  // or_pattern
             &&
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (target = pattern_capture_target_rule(p))  // pattern_capture_target
         )
@@ -7967,8 +7941,7 @@ static pattern_ty
 or_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -7993,7 +7966,7 @@ or_pattern_rule(Parser *p)
         D(fprintf(stderr, "%*c> or_pattern[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'|'.closed_pattern+"));
         asdl_pattern_seq* patterns;
         if (
-            (patterns = (asdl_pattern_seq*)_gather_66_rule(p))  // '|'.closed_pattern+
+            (patterns = (asdl_pattern_seq*)_gather_65_rule(p))  // '|'.closed_pattern+
         )
         {
             D(fprintf(stderr, "%*c+ or_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'|'.closed_pattern+"));
@@ -8037,8 +8010,7 @@ static pattern_ty
 closed_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8220,8 +8192,7 @@ static pattern_ty
 literal_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8248,7 +8219,7 @@ literal_pattern_rule(Parser *p)
         if (
             (value = signed_number_rule(p))  // signed_number
             &&
-            _PyPegen_lookahead(0, _tmp_68_rule, p)
+            _PyPegen_lookahead(0, _tmp_67_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ literal_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "signed_number !('+' | '-')"));
@@ -8347,7 +8318,7 @@ literal_pattern_rule(Parser *p)
         D(fprintf(stderr, "%*c> literal_pattern[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 602))  // token='None'
+            (_keyword = _PyPegen_expect_token(p, 611))  // token='None'
         )
         {
             D(fprintf(stderr, "%*c+ literal_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
@@ -8380,7 +8351,7 @@ literal_pattern_rule(Parser *p)
         D(fprintf(stderr, "%*c> literal_pattern[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 601))  // token='True'
+            (_keyword = _PyPegen_expect_token(p, 610))  // token='True'
         )
         {
             D(fprintf(stderr, "%*c+ literal_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
@@ -8413,7 +8384,7 @@ literal_pattern_rule(Parser *p)
         D(fprintf(stderr, "%*c> literal_pattern[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 603))  // token='False'
+            (_keyword = _PyPegen_expect_token(p, 612))  // token='False'
         )
         {
             D(fprintf(stderr, "%*c+ literal_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
@@ -8455,8 +8426,7 @@ static expr_ty
 literal_expr_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8483,7 +8453,7 @@ literal_expr_rule(Parser *p)
         if (
             (signed_number_var = signed_number_rule(p))  // signed_number
             &&
-            _PyPegen_lookahead(0, _tmp_69_rule, p)
+            _PyPegen_lookahead(0, _tmp_68_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ literal_expr[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "signed_number !('+' | '-')"));
@@ -8540,7 +8510,7 @@ literal_expr_rule(Parser *p)
         D(fprintf(stderr, "%*c> literal_expr[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 602))  // token='None'
+            (_keyword = _PyPegen_expect_token(p, 611))  // token='None'
         )
         {
             D(fprintf(stderr, "%*c+ literal_expr[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
@@ -8573,7 +8543,7 @@ literal_expr_rule(Parser *p)
         D(fprintf(stderr, "%*c> literal_expr[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 601))  // token='True'
+            (_keyword = _PyPegen_expect_token(p, 610))  // token='True'
         )
         {
             D(fprintf(stderr, "%*c+ literal_expr[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
@@ -8606,7 +8576,7 @@ literal_expr_rule(Parser *p)
         D(fprintf(stderr, "%*c> literal_expr[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 603))  // token='False'
+            (_keyword = _PyPegen_expect_token(p, 612))  // token='False'
         )
         {
             D(fprintf(stderr, "%*c+ literal_expr[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
@@ -8644,8 +8614,7 @@ static expr_ty
 complex_number_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8751,8 +8720,7 @@ static expr_ty
 signed_number_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8835,8 +8803,7 @@ static expr_ty
 signed_real_number_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8919,8 +8886,7 @@ static expr_ty
 real_number_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -8963,8 +8929,7 @@ static expr_ty
 imaginary_number_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9007,8 +8972,7 @@ static pattern_ty
 capture_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9069,8 +9033,7 @@ static expr_ty
 pattern_capture_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9090,7 +9053,7 @@ pattern_capture_target_rule(Parser *p)
             &&
             (name = _PyPegen_name_token(p))  // NAME
             &&
-            _PyPegen_lookahead(0, _tmp_70_rule, p)
+            _PyPegen_lookahead(0, _tmp_69_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ pattern_capture_target[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "!\"_\" NAME !('.' | '(' | '=')"));
@@ -9117,8 +9080,7 @@ static pattern_ty
 wildcard_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9179,8 +9141,7 @@ static pattern_ty
 value_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9207,7 +9168,7 @@ value_pattern_rule(Parser *p)
         if (
             (attr = attr_rule(p))  // attr
             &&
-            _PyPegen_lookahead(0, _tmp_71_rule, p)
+            _PyPegen_lookahead(0, _tmp_70_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ value_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "attr !('.' | '(' | '=')"));
@@ -9245,8 +9206,7 @@ static expr_ty
 attr_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, attr_type, &_res)) {
@@ -9280,8 +9240,7 @@ static expr_ty
 attr_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9349,8 +9308,7 @@ static expr_ty
 name_or_attr_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9407,8 +9365,7 @@ static pattern_ty
 group_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9457,8 +9414,7 @@ static pattern_ty
 sequence_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9564,8 +9520,7 @@ static asdl_seq*
 open_sequence_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9614,8 +9569,7 @@ static asdl_seq*
 maybe_sequence_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9633,7 +9587,7 @@ maybe_sequence_pattern_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_seq * patterns;
         if (
-            (patterns = _gather_72_rule(p))  // ','.maybe_star_pattern+
+            (patterns = _gather_71_rule(p))  // ','.maybe_star_pattern+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -9662,8 +9616,7 @@ static pattern_ty
 maybe_star_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9720,8 +9673,7 @@ static pattern_ty
 star_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -9830,8 +9782,7 @@ static pattern_ty
 mapping_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10030,8 +9981,7 @@ static asdl_seq*
 items_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10045,13 +9995,13 @@ items_pattern_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> items_pattern[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.key_value_pattern+"));
-        asdl_seq * _gather_74_var;
+        asdl_seq * _gather_73_var;
         if (
-            (_gather_74_var = _gather_74_rule(p))  // ','.key_value_pattern+
+            (_gather_73_var = _gather_73_rule(p))  // ','.key_value_pattern+
         )
         {
             D(fprintf(stderr, "%*c+ items_pattern[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.key_value_pattern+"));
-            _res = _gather_74_var;
+            _res = _gather_73_var;
             goto done;
         }
         p->mark = _mark;
@@ -10069,8 +10019,7 @@ static KeyPatternPair*
 key_value_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10088,7 +10037,7 @@ key_value_pattern_rule(Parser *p)
         void *key;
         pattern_ty pattern;
         if (
-            (key = _tmp_76_rule(p))  // literal_expr | attr
+            (key = _tmp_75_rule(p))  // literal_expr | attr
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -10119,8 +10068,7 @@ static expr_ty
 double_star_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10171,8 +10119,7 @@ static pattern_ty
 class_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10402,8 +10349,7 @@ static asdl_pattern_seq*
 positional_patterns_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10419,7 +10365,7 @@ positional_patterns_rule(Parser *p)
         D(fprintf(stderr, "%*c> positional_patterns[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.pattern+"));
         asdl_pattern_seq* args;
         if (
-            (args = (asdl_pattern_seq*)_gather_77_rule(p))  // ','.pattern+
+            (args = (asdl_pattern_seq*)_gather_76_rule(p))  // ','.pattern+
         )
         {
             D(fprintf(stderr, "%*c+ positional_patterns[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.pattern+"));
@@ -10446,8 +10392,7 @@ static asdl_seq*
 keyword_patterns_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10461,13 +10406,13 @@ keyword_patterns_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> keyword_patterns[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.keyword_pattern+"));
-        asdl_seq * _gather_79_var;
+        asdl_seq * _gather_78_var;
         if (
-            (_gather_79_var = _gather_79_rule(p))  // ','.keyword_pattern+
+            (_gather_78_var = _gather_78_rule(p))  // ','.keyword_pattern+
         )
         {
             D(fprintf(stderr, "%*c+ keyword_patterns[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.keyword_pattern+"));
-            _res = _gather_79_var;
+            _res = _gather_78_var;
             goto done;
         }
         p->mark = _mark;
@@ -10485,8 +10430,7 @@ static KeyPatternPair*
 keyword_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10530,13 +10474,439 @@ keyword_pattern_rule(Parser *p)
     return _res;
 }
 
+// type_alias: "type" NAME type_params? '=' expression
+static stmt_ty
+type_alias_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    stmt_ty _res = NULL;
+    int _mark = p->mark;
+    if (p->mark == p->fill && _PyPegen_fill_token(p) < 0) {
+        p->error_indicator = 1;
+        p->level--;
+        return NULL;
+    }
+    int _start_lineno = p->tokens[_mark]->lineno;
+    UNUSED(_start_lineno); // Only used by EXTRA macro
+    int _start_col_offset = p->tokens[_mark]->col_offset;
+    UNUSED(_start_col_offset); // Only used by EXTRA macro
+    { // "type" NAME type_params? '=' expression
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_alias[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "\"type\" NAME type_params? '=' expression"));
+        expr_ty _keyword;
+        Token * _literal;
+        expr_ty b;
+        expr_ty n;
+        void *t;
+        if (
+            (_keyword = _PyPegen_expect_soft_keyword(p, "type"))  // soft_keyword='"type"'
+            &&
+            (n = _PyPegen_name_token(p))  // NAME
+            &&
+            (t = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
+            (_literal = _PyPegen_expect_token(p, 22))  // token='='
+            &&
+            (b = expression_rule(p))  // expression
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_alias[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "\"type\" NAME type_params? '=' expression"));
+            Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
+            if (_token == NULL) {
+                p->level--;
+                return NULL;
+            }
+            int _end_lineno = _token->end_lineno;
+            UNUSED(_end_lineno); // Only used by EXTRA macro
+            int _end_col_offset = _token->end_col_offset;
+            UNUSED(_end_col_offset); // Only used by EXTRA macro
+            _res = CHECK_VERSION ( stmt_ty , 12 , "Type statement is" , _PyAST_TypeAlias ( CHECK ( expr_ty , _PyPegen_set_expr_context ( p , n , Store ) ) , t , b , EXTRA ) );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_alias[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "\"type\" NAME type_params? '=' expression"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// type_params: '[' type_param_seq ']'
+static asdl_type_param_seq*
+type_params_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    asdl_type_param_seq* _res = NULL;
+    int _mark = p->mark;
+    { // '[' type_param_seq ']'
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_params[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'[' type_param_seq ']'"));
+        Token * _literal;
+        Token * _literal_1;
+        asdl_type_param_seq* t;
+        if (
+            (_literal = _PyPegen_expect_token(p, 9))  // token='['
+            &&
+            (t = type_param_seq_rule(p))  // type_param_seq
+            &&
+            (_literal_1 = _PyPegen_expect_token(p, 10))  // token=']'
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_params[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'[' type_param_seq ']'"));
+            _res = CHECK_VERSION ( asdl_type_param_seq* , 12 , "Type parameter lists are" , t );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_params[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'[' type_param_seq ']'"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// type_param_seq: ','.type_param+ ','?
+static asdl_type_param_seq*
+type_param_seq_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    asdl_type_param_seq* _res = NULL;
+    int _mark = p->mark;
+    { // ','.type_param+ ','?
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param_seq[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.type_param+ ','?"));
+        void *_opt_var;
+        UNUSED(_opt_var); // Silence compiler warnings
+        asdl_type_param_seq* a;
+        if (
+            (a = (asdl_type_param_seq*)_gather_80_rule(p))  // ','.type_param+
+            &&
+            (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param_seq[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.type_param+ ','?"));
+            _res = a;
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param_seq[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','.type_param+ ','?"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// type_param:
+//     | NAME type_param_bound?
+//     | '*' NAME ':' expression
+//     | '*' NAME
+//     | '**' NAME ':' expression
+//     | '**' NAME
+static type_param_ty
+type_param_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    type_param_ty _res = NULL;
+    if (_PyPegen_is_memoized(p, type_param_type, &_res)) {
+        p->level--;
+        return _res;
+    }
+    int _mark = p->mark;
+    if (p->mark == p->fill && _PyPegen_fill_token(p) < 0) {
+        p->error_indicator = 1;
+        p->level--;
+        return NULL;
+    }
+    int _start_lineno = p->tokens[_mark]->lineno;
+    UNUSED(_start_lineno); // Only used by EXTRA macro
+    int _start_col_offset = p->tokens[_mark]->col_offset;
+    UNUSED(_start_col_offset); // Only used by EXTRA macro
+    { // NAME type_param_bound?
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME type_param_bound?"));
+        expr_ty a;
+        void *b;
+        if (
+            (a = _PyPegen_name_token(p))  // NAME
+            &&
+            (b = type_param_bound_rule(p), !p->error_indicator)  // type_param_bound?
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME type_param_bound?"));
+            Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
+            if (_token == NULL) {
+                p->level--;
+                return NULL;
+            }
+            int _end_lineno = _token->end_lineno;
+            UNUSED(_end_lineno); // Only used by EXTRA macro
+            int _end_col_offset = _token->end_col_offset;
+            UNUSED(_end_col_offset); // Only used by EXTRA macro
+            _res = _PyAST_TypeVar ( a -> v . Name . id , b , EXTRA );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME type_param_bound?"));
+    }
+    { // '*' NAME ':' expression
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*' NAME ':' expression"));
+        Token * _literal;
+        expr_ty a;
+        Token * colon;
+        expr_ty e;
+        if (
+            (_literal = _PyPegen_expect_token(p, 16))  // token='*'
+            &&
+            (a = _PyPegen_name_token(p))  // NAME
+            &&
+            (colon = _PyPegen_expect_token(p, 11))  // token=':'
+            &&
+            (e = expression_rule(p))  // expression
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' NAME ':' expression"));
+            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( colon , e -> kind == Tuple_kind ? "cannot use constraints with TypeVarTuple" : "cannot use bound with TypeVarTuple" );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'*' NAME ':' expression"));
+    }
+    { // '*' NAME
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*' NAME"));
+        Token * _literal;
+        expr_ty a;
+        if (
+            (_literal = _PyPegen_expect_token(p, 16))  // token='*'
+            &&
+            (a = _PyPegen_name_token(p))  // NAME
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' NAME"));
+            Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
+            if (_token == NULL) {
+                p->level--;
+                return NULL;
+            }
+            int _end_lineno = _token->end_lineno;
+            UNUSED(_end_lineno); // Only used by EXTRA macro
+            int _end_col_offset = _token->end_col_offset;
+            UNUSED(_end_col_offset); // Only used by EXTRA macro
+            _res = _PyAST_TypeVarTuple ( a -> v . Name . id , EXTRA );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'*' NAME"));
+    }
+    { // '**' NAME ':' expression
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**' NAME ':' expression"));
+        Token * _literal;
+        expr_ty a;
+        Token * colon;
+        expr_ty e;
+        if (
+            (_literal = _PyPegen_expect_token(p, 35))  // token='**'
+            &&
+            (a = _PyPegen_name_token(p))  // NAME
+            &&
+            (colon = _PyPegen_expect_token(p, 11))  // token=':'
+            &&
+            (e = expression_rule(p))  // expression
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**' NAME ':' expression"));
+            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( colon , e -> kind == Tuple_kind ? "cannot use constraints with ParamSpec" : "cannot use bound with ParamSpec" );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'**' NAME ':' expression"));
+    }
+    { // '**' NAME
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**' NAME"));
+        Token * _literal;
+        expr_ty a;
+        if (
+            (_literal = _PyPegen_expect_token(p, 35))  // token='**'
+            &&
+            (a = _PyPegen_name_token(p))  // NAME
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**' NAME"));
+            Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
+            if (_token == NULL) {
+                p->level--;
+                return NULL;
+            }
+            int _end_lineno = _token->end_lineno;
+            UNUSED(_end_lineno); // Only used by EXTRA macro
+            int _end_col_offset = _token->end_col_offset;
+            UNUSED(_end_col_offset); // Only used by EXTRA macro
+            _res = _PyAST_ParamSpec ( a -> v . Name . id , EXTRA );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'**' NAME"));
+    }
+    _res = NULL;
+  done:
+    _PyPegen_insert_memo(p, _mark, type_param_type, _res);
+    p->level--;
+    return _res;
+}
+
+// type_param_bound: ':' expression
+static expr_ty
+type_param_bound_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    expr_ty _res = NULL;
+    int _mark = p->mark;
+    { // ':' expression
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> type_param_bound[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':' expression"));
+        Token * _literal;
+        expr_ty e;
+        if (
+            (_literal = _PyPegen_expect_token(p, 11))  // token=':'
+            &&
+            (e = expression_rule(p))  // expression
+        )
+        {
+            D(fprintf(stderr, "%*c+ type_param_bound[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':' expression"));
+            _res = e;
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s type_param_bound[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':' expression"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
 // expressions: expression ((',' expression))+ ','? | expression ',' | expression
 static expr_ty
 expressions_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10566,7 +10936,7 @@ expressions_rule(Parser *p)
         if (
             (a = expression_rule(p))  // expression
             &&
-            (b = _loop1_81_rule(p))  // ((',' expression))+
+            (b = _loop1_82_rule(p))  // ((',' expression))+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -10664,8 +11034,7 @@ static expr_ty
 expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10738,11 +11107,11 @@ expression_rule(Parser *p)
         if (
             (a = disjunction_rule(p))  // disjunction
             &&
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 645))  // token='else'
+            (_keyword_1 = _PyPegen_expect_token(p, 661))  // token='else'
             &&
             (c = expression_rule(p))  // expression
         )
@@ -10819,8 +11188,7 @@ static expr_ty
 yield_expr_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10847,9 +11215,9 @@ yield_expr_rule(Parser *p)
         Token * _keyword_1;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 573))  // token='yield'
+            (_keyword = _PyPegen_expect_token(p, 580))  // token='yield'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 608))  // token='from'
+            (_keyword_1 = _PyPegen_expect_token(p, 618))  // token='from'
             &&
             (a = expression_rule(p))  // expression
         )
@@ -10885,7 +11253,7 @@ yield_expr_rule(Parser *p)
         Token * _keyword;
         void *a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 573))  // token='yield'
+            (_keyword = _PyPegen_expect_token(p, 580))  // token='yield'
             &&
             (a = star_expressions_rule(p), !p->error_indicator)  // star_expressions?
         )
@@ -10926,8 +11294,7 @@ static expr_ty
 star_expressions_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -10957,7 +11324,7 @@ star_expressions_rule(Parser *p)
         if (
             (a = star_expression_rule(p))  // star_expression
             &&
-            (b = _loop1_82_rule(p))  // ((',' star_expression))+
+            (b = _loop1_83_rule(p))  // ((',' star_expression))+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -11050,8 +11417,7 @@ static expr_ty
 star_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11139,8 +11505,7 @@ static asdl_expr_seq*
 star_named_expressions_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11158,7 +11523,7 @@ star_named_expressions_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_gather_83_rule(p))  // ','.star_named_expression+
+            (a = (asdl_expr_seq*)_gather_84_rule(p))  // ','.star_named_expression+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -11187,8 +11552,7 @@ static expr_ty
 star_named_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11271,8 +11635,7 @@ static expr_ty
 assignment_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11346,8 +11709,7 @@ static expr_ty
 named_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11425,8 +11787,7 @@ static expr_ty
 disjunction_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11458,7 +11819,7 @@ disjunction_rule(Parser *p)
         if (
             (a = conjunction_rule(p))  // conjunction
             &&
-            (b = _loop1_85_rule(p))  // (('or' conjunction))+
+            (b = _loop1_86_rule(p))  // (('or' conjunction))+
         )
         {
             D(fprintf(stderr, "%*c+ disjunction[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "conjunction (('or' conjunction))+"));
@@ -11514,8 +11875,7 @@ static expr_ty
 conjunction_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11547,7 +11907,7 @@ conjunction_rule(Parser *p)
         if (
             (a = inversion_rule(p))  // inversion
             &&
-            (b = _loop1_86_rule(p))  // (('and' inversion))+
+            (b = _loop1_87_rule(p))  // (('and' inversion))+
         )
         {
             D(fprintf(stderr, "%*c+ conjunction[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "inversion (('and' inversion))+"));
@@ -11603,8 +11963,7 @@ static expr_ty
 inversion_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11634,7 +11993,7 @@ inversion_rule(Parser *p)
         Token * _keyword;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 581))  // token='not'
+            (_keyword = _PyPegen_expect_token(p, 588))  // token='not'
             &&
             (a = inversion_rule(p))  // inversion
         )
@@ -11692,8 +12051,7 @@ static expr_ty
 comparison_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11721,7 +12079,7 @@ comparison_rule(Parser *p)
         if (
             (a = bitwise_or_rule(p))  // bitwise_or
             &&
-            (b = _loop1_87_rule(p))  // compare_op_bitwise_or_pair+
+            (b = _loop1_88_rule(p))  // compare_op_bitwise_or_pair+
         )
         {
             D(fprintf(stderr, "%*c+ comparison[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "bitwise_or compare_op_bitwise_or_pair+"));
@@ -11786,8 +12144,7 @@ static CmpopExprPair*
 compare_op_bitwise_or_pair_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -11996,8 +12353,7 @@ static CmpopExprPair*
 eq_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12043,8 +12399,7 @@ static CmpopExprPair*
 noteq_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12058,10 +12413,10 @@ noteq_bitwise_or_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> noteq_bitwise_or[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('!=') bitwise_or"));
-        void *_tmp_88_var;
+        void *_tmp_89_var;
         expr_ty a;
         if (
-            (_tmp_88_var = _tmp_88_rule(p))  // '!='
+            (_tmp_89_var = _tmp_89_rule(p))  // '!='
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12090,8 +12445,7 @@ static CmpopExprPair*
 lte_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12137,8 +12491,7 @@ static CmpopExprPair*
 lt_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12184,8 +12537,7 @@ static CmpopExprPair*
 gte_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12231,8 +12583,7 @@ static CmpopExprPair*
 gt_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12278,8 +12629,7 @@ static CmpopExprPair*
 notin_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12297,9 +12647,9 @@ notin_bitwise_or_rule(Parser *p)
         Token * _keyword_1;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 581))  // token='not'
+            (_keyword = _PyPegen_expect_token(p, 588))  // token='not'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12328,8 +12678,7 @@ static CmpopExprPair*
 in_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12346,7 +12695,7 @@ in_bitwise_or_rule(Parser *p)
         Token * _keyword;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12375,8 +12724,7 @@ static CmpopExprPair*
 isnot_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12394,9 +12742,9 @@ isnot_bitwise_or_rule(Parser *p)
         Token * _keyword_1;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 582))  // token='is'
+            (_keyword = _PyPegen_expect_token(p, 589))  // token='is'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 581))  // token='not'
+            (_keyword_1 = _PyPegen_expect_token(p, 588))  // token='not'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12425,8 +12773,7 @@ static CmpopExprPair*
 is_bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12443,7 +12790,7 @@ is_bitwise_or_rule(Parser *p)
         Token * _keyword;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 582))  // token='is'
+            (_keyword = _PyPegen_expect_token(p, 589))  // token='is'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12474,8 +12821,7 @@ static expr_ty
 bitwise_or_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, bitwise_or_type, &_res)) {
@@ -12509,8 +12855,7 @@ static expr_ty
 bitwise_or_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12598,8 +12943,7 @@ static expr_ty
 bitwise_xor_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, bitwise_xor_type, &_res)) {
@@ -12633,8 +12977,7 @@ static expr_ty
 bitwise_xor_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12722,8 +13065,7 @@ static expr_ty
 bitwise_and_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, bitwise_and_type, &_res)) {
@@ -12757,8 +13099,7 @@ static expr_ty
 bitwise_and_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -12846,8 +13187,7 @@ static expr_ty
 shift_expr_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, shift_expr_type, &_res)) {
@@ -12881,8 +13221,7 @@ static expr_ty
 shift_expr_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -13009,8 +13348,7 @@ static expr_ty
 sum_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, sum_type, &_res)) {
@@ -13044,8 +13382,7 @@ static expr_ty
 sum_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -13178,8 +13515,7 @@ static expr_ty
 term_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, term_type, &_res)) {
@@ -13213,8 +13549,7 @@ static expr_ty
 term_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -13456,8 +13791,7 @@ static expr_ty
 factor_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -13617,8 +13951,7 @@ static expr_ty
 power_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -13699,13 +14032,12 @@ power_rule(Parser *p)
     return _res;
 }
 
-// await_primary: AWAIT primary | primary
+// await_primary: 'await' primary | primary
 static expr_ty
 await_primary_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -13726,21 +14058,21 @@ await_primary_rule(Parser *p)
     UNUSED(_start_lineno); // Only used by EXTRA macro
     int _start_col_offset = p->tokens[_mark]->col_offset;
     UNUSED(_start_col_offset); // Only used by EXTRA macro
-    { // AWAIT primary
+    { // 'await' primary
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> await_primary[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "AWAIT primary"));
+        D(fprintf(stderr, "%*c> await_primary[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'await' primary"));
+        Token * _keyword;
         expr_ty a;
-        Token * await_var;
         if (
-            (await_var = _PyPegen_expect_token(p, AWAIT))  // token='AWAIT'
+            (_keyword = _PyPegen_expect_token(p, 590))  // token='await'
             &&
             (a = primary_rule(p))  // primary
         )
         {
-            D(fprintf(stderr, "%*c+ await_primary[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "AWAIT primary"));
+            D(fprintf(stderr, "%*c+ await_primary[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'await' primary"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -13760,7 +14092,7 @@ await_primary_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s await_primary[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "AWAIT primary"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'await' primary"));
     }
     { // primary
         if (p->error_indicator) {
@@ -13800,8 +14132,7 @@ static expr_ty
 primary_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, primary_type, &_res)) {
@@ -13835,8 +14166,7 @@ static expr_ty
 primary_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14042,8 +14372,7 @@ static expr_ty
 slices_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14096,7 +14425,7 @@ slices_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_gather_89_rule(p))  // ','.(slice | starred_expression)+
+            (a = (asdl_expr_seq*)_gather_90_rule(p))  // ','.(slice | starred_expression)+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -14134,8 +14463,7 @@ static expr_ty
 slice_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14169,7 +14497,7 @@ slice_rule(Parser *p)
             &&
             (b = expression_rule(p), !p->error_indicator)  // expression?
             &&
-            (c = _tmp_91_rule(p), !p->error_indicator)  // [':' expression?]
+            (c = _tmp_92_rule(p), !p->error_indicator)  // [':' expression?]
         )
         {
             D(fprintf(stderr, "%*c+ slice[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression? ':' expression? [':' expression?]"));
@@ -14239,8 +14567,7 @@ static expr_ty
 atom_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14284,7 +14611,7 @@ atom_rule(Parser *p)
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 601))  // token='True'
+            (_keyword = _PyPegen_expect_token(p, 610))  // token='True'
         )
         {
             D(fprintf(stderr, "%*c+ atom[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
@@ -14317,7 +14644,7 @@ atom_rule(Parser *p)
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 603))  // token='False'
+            (_keyword = _PyPegen_expect_token(p, 612))  // token='False'
         )
         {
             D(fprintf(stderr, "%*c+ atom[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
@@ -14350,7 +14677,7 @@ atom_rule(Parser *p)
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 602))  // token='None'
+            (_keyword = _PyPegen_expect_token(p, 611))  // token='None'
         )
         {
             D(fprintf(stderr, "%*c+ atom[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
@@ -14383,7 +14710,7 @@ atom_rule(Parser *p)
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&(STRING | FSTRING_START) strings"));
         expr_ty strings_var;
         if (
-            _PyPegen_lookahead(1, _tmp_92_rule, p)
+            _PyPegen_lookahead(1, _tmp_93_rule, p)
             &&
             (strings_var = strings_rule(p))  // strings
         )
@@ -14421,15 +14748,15 @@ atom_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'(' (tuple | group | genexp)"));
-        void *_tmp_93_var;
+        void *_tmp_94_var;
         if (
             _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 7)  // token='('
             &&
-            (_tmp_93_var = _tmp_93_rule(p))  // tuple | group | genexp
+            (_tmp_94_var = _tmp_94_rule(p))  // tuple | group | genexp
         )
         {
             D(fprintf(stderr, "%*c+ atom[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&'(' (tuple | group | genexp)"));
-            _res = _tmp_93_var;
+            _res = _tmp_94_var;
             goto done;
         }
         p->mark = _mark;
@@ -14442,15 +14769,15 @@ atom_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'[' (list | listcomp)"));
-        void *_tmp_94_var;
+        void *_tmp_95_var;
         if (
             _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 9)  // token='['
             &&
-            (_tmp_94_var = _tmp_94_rule(p))  // list | listcomp
+            (_tmp_95_var = _tmp_95_rule(p))  // list | listcomp
         )
         {
             D(fprintf(stderr, "%*c+ atom[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&'[' (list | listcomp)"));
-            _res = _tmp_94_var;
+            _res = _tmp_95_var;
             goto done;
         }
         p->mark = _mark;
@@ -14463,15 +14790,15 @@ atom_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> atom[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'{' (dict | set | dictcomp | setcomp)"));
-        void *_tmp_95_var;
+        void *_tmp_96_var;
         if (
             _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 25)  // token='{'
             &&
-            (_tmp_95_var = _tmp_95_rule(p))  // dict | set | dictcomp | setcomp
+            (_tmp_96_var = _tmp_96_rule(p))  // dict | set | dictcomp | setcomp
         )
         {
             D(fprintf(stderr, "%*c+ atom[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "&'{' (dict | set | dictcomp | setcomp)"));
-            _res = _tmp_95_var;
+            _res = _tmp_96_var;
             goto done;
         }
         p->mark = _mark;
@@ -14522,8 +14849,7 @@ static expr_ty
 group_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14543,7 +14869,7 @@ group_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (a = _tmp_96_rule(p))  // yield_expr | named_expression
+            (a = _tmp_97_rule(p))  // yield_expr | named_expression
             &&
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
         )
@@ -14591,8 +14917,7 @@ static expr_ty
 lambdef_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14620,7 +14945,7 @@ lambdef_rule(Parser *p)
         void *a;
         expr_ty b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 600))  // token='lambda'
+            (_keyword = _PyPegen_expect_token(p, 609))  // token='lambda'
             &&
             (a = lambda_params_rule(p), !p->error_indicator)  // lambda_params?
             &&
@@ -14662,8 +14987,7 @@ static arguments_ty
 lambda_params_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14725,8 +15049,7 @@ static arguments_ty
 lambda_parameters_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14747,9 +15070,9 @@ lambda_parameters_rule(Parser *p)
         if (
             (a = lambda_slash_no_default_rule(p))  // lambda_slash_no_default
             &&
-            (b = (asdl_arg_seq*)_loop0_97_rule(p))  // lambda_param_no_default*
+            (b = (asdl_arg_seq*)_loop0_98_rule(p))  // lambda_param_no_default*
             &&
-            (c = _loop0_98_rule(p))  // lambda_param_with_default*
+            (c = _loop0_99_rule(p))  // lambda_param_with_default*
             &&
             (d = lambda_star_etc_rule(p), !p->error_indicator)  // lambda_star_etc?
         )
@@ -14779,7 +15102,7 @@ lambda_parameters_rule(Parser *p)
         if (
             (a = lambda_slash_with_default_rule(p))  // lambda_slash_with_default
             &&
-            (b = _loop0_99_rule(p))  // lambda_param_with_default*
+            (b = _loop0_100_rule(p))  // lambda_param_with_default*
             &&
             (c = lambda_star_etc_rule(p), !p->error_indicator)  // lambda_star_etc?
         )
@@ -14807,9 +15130,9 @@ lambda_parameters_rule(Parser *p)
         asdl_seq * b;
         void *c;
         if (
-            (a = (asdl_arg_seq*)_loop1_100_rule(p))  // lambda_param_no_default+
+            (a = (asdl_arg_seq*)_loop1_101_rule(p))  // lambda_param_no_default+
             &&
-            (b = _loop0_101_rule(p))  // lambda_param_with_default*
+            (b = _loop0_102_rule(p))  // lambda_param_with_default*
             &&
             (c = lambda_star_etc_rule(p), !p->error_indicator)  // lambda_star_etc?
         )
@@ -14836,7 +15159,7 @@ lambda_parameters_rule(Parser *p)
         asdl_seq * a;
         void *b;
         if (
-            (a = _loop1_102_rule(p))  // lambda_param_with_default+
+            (a = _loop1_103_rule(p))  // lambda_param_with_default+
             &&
             (b = lambda_star_etc_rule(p), !p->error_indicator)  // lambda_star_etc?
         )
@@ -14891,8 +15214,7 @@ static asdl_arg_seq*
 lambda_slash_no_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14910,7 +15232,7 @@ lambda_slash_no_default_rule(Parser *p)
         Token * _literal_1;
         asdl_arg_seq* a;
         if (
-            (a = (asdl_arg_seq*)_loop1_103_rule(p))  // lambda_param_no_default+
+            (a = (asdl_arg_seq*)_loop1_104_rule(p))  // lambda_param_no_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -14939,7 +15261,7 @@ lambda_slash_no_default_rule(Parser *p)
         Token * _literal;
         asdl_arg_seq* a;
         if (
-            (a = (asdl_arg_seq*)_loop1_104_rule(p))  // lambda_param_no_default+
+            (a = (asdl_arg_seq*)_loop1_105_rule(p))  // lambda_param_no_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -14972,8 +15294,7 @@ static SlashWithDefault*
 lambda_slash_with_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -14992,9 +15313,9 @@ lambda_slash_with_default_rule(Parser *p)
         asdl_seq * a;
         asdl_seq * b;
         if (
-            (a = _loop0_105_rule(p))  // lambda_param_no_default*
+            (a = _loop0_106_rule(p))  // lambda_param_no_default*
             &&
-            (b = _loop1_106_rule(p))  // lambda_param_with_default+
+            (b = _loop1_107_rule(p))  // lambda_param_with_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -15024,9 +15345,9 @@ lambda_slash_with_default_rule(Parser *p)
         asdl_seq * a;
         asdl_seq * b;
         if (
-            (a = _loop0_107_rule(p))  // lambda_param_no_default*
+            (a = _loop0_108_rule(p))  // lambda_param_no_default*
             &&
-            (b = _loop1_108_rule(p))  // lambda_param_with_default+
+            (b = _loop1_109_rule(p))  // lambda_param_with_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -15061,8 +15382,7 @@ static StarEtc*
 lambda_star_etc_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15104,7 +15424,7 @@ lambda_star_etc_rule(Parser *p)
             &&
             (a = lambda_param_no_default_rule(p))  // lambda_param_no_default
             &&
-            (b = _loop0_109_rule(p))  // lambda_param_maybe_default*
+            (b = _loop0_110_rule(p))  // lambda_param_maybe_default*
             &&
             (c = lambda_kwds_rule(p), !p->error_indicator)  // lambda_kwds?
         )
@@ -15137,7 +15457,7 @@ lambda_star_etc_rule(Parser *p)
             &&
             (_literal_1 = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (b = _loop1_110_rule(p))  // lambda_param_maybe_default+
+            (b = _loop1_111_rule(p))  // lambda_param_maybe_default+
             &&
             (c = lambda_kwds_rule(p), !p->error_indicator)  // lambda_kwds?
         )
@@ -15190,8 +15510,7 @@ static arg_ty
 lambda_kwds_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15256,8 +15575,7 @@ static arg_ty
 lambda_param_no_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15329,8 +15647,7 @@ static NameDefaultPair*
 lambda_param_with_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15408,8 +15725,7 @@ static NameDefaultPair*
 lambda_param_maybe_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15487,8 +15803,7 @@ static arg_ty
 lambda_param_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15549,8 +15864,7 @@ static expr_ty
 fstring_middle_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15608,14 +15922,13 @@ fstring_middle_rule(Parser *p)
 }
 
 // fstring_replacement_field:
-//     | '{' (yield_expr | star_expressions) "="? fstring_conversion? fstring_full_format_spec? '}'
+//     | '{' (yield_expr | star_expressions) '='? fstring_conversion? fstring_full_format_spec? '}'
 //     | invalid_replacement_field
 static expr_ty
 fstring_replacement_field_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15632,12 +15945,12 @@ fstring_replacement_field_rule(Parser *p)
     UNUSED(_start_lineno); // Only used by EXTRA macro
     int _start_col_offset = p->tokens[_mark]->col_offset;
     UNUSED(_start_col_offset); // Only used by EXTRA macro
-    { // '{' (yield_expr | star_expressions) "="? fstring_conversion? fstring_full_format_spec? '}'
+    { // '{' (yield_expr | star_expressions) '='? fstring_conversion? fstring_full_format_spec? '}'
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> fstring_replacement_field[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) \"=\"? fstring_conversion? fstring_full_format_spec? '}'"));
+        D(fprintf(stderr, "%*c> fstring_replacement_field[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '='? fstring_conversion? fstring_full_format_spec? '}'"));
         Token * _literal;
         void *a;
         void *conversion;
@@ -15647,9 +15960,9 @@ fstring_replacement_field_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (a = _tmp_111_rule(p))  // yield_expr | star_expressions
+            (a = _tmp_112_rule(p))  // yield_expr | star_expressions
             &&
-            (debug_expr = _PyPegen_expect_token(p, 22), !p->error_indicator)  // "="?
+            (debug_expr = _PyPegen_expect_token(p, 22), !p->error_indicator)  // '='?
             &&
             (conversion = fstring_conversion_rule(p), !p->error_indicator)  // fstring_conversion?
             &&
@@ -15658,7 +15971,7 @@ fstring_replacement_field_rule(Parser *p)
             (rbrace = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ fstring_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) \"=\"? fstring_conversion? fstring_full_format_spec? '}'"));
+            D(fprintf(stderr, "%*c+ fstring_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '='? fstring_conversion? fstring_full_format_spec? '}'"));
             Token *_token = _PyPegen_get_last_nonnwhitespace_token(p);
             if (_token == NULL) {
                 p->level--;
@@ -15678,7 +15991,7 @@ fstring_replacement_field_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s fstring_replacement_field[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'{' (yield_expr | star_expressions) \"=\"? fstring_conversion? fstring_full_format_spec? '}'"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'{' (yield_expr | star_expressions) '='? fstring_conversion? fstring_full_format_spec? '}'"));
     }
     if (p->call_invalid_rules) { // invalid_replacement_field
         if (p->error_indicator) {
@@ -15710,8 +16023,7 @@ static ResultTokenWithMetadata*
 fstring_conversion_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15757,8 +16069,7 @@ static ResultTokenWithMetadata*
 fstring_full_format_spec_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15786,7 +16097,7 @@ fstring_full_format_spec_rule(Parser *p)
         if (
             (colon = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            (spec = _loop0_112_rule(p))  // fstring_format_spec*
+            (spec = _loop0_113_rule(p))  // fstring_format_spec*
         )
         {
             D(fprintf(stderr, "%*c+ fstring_full_format_spec[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':' fstring_format_spec*"));
@@ -15822,8 +16133,7 @@ static expr_ty
 fstring_format_spec_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15843,7 +16153,7 @@ fstring_format_spec_rule(Parser *p)
         )
         {
             D(fprintf(stderr, "%*c+ fstring_format_spec[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "FSTRING_MIDDLE"));
-            _res = _PyPegen_constant_from_token ( p , t );
+            _res = _PyPegen_decoded_constant_from_token ( p , t );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 p->level--;
@@ -15880,13 +16190,61 @@ fstring_format_spec_rule(Parser *p)
     return _res;
 }
 
+// fstring: FSTRING_START fstring_middle* FSTRING_END
+static expr_ty
+fstring_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    expr_ty _res = NULL;
+    int _mark = p->mark;
+    { // FSTRING_START fstring_middle* FSTRING_END
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> fstring[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "FSTRING_START fstring_middle* FSTRING_END"));
+        Token * a;
+        asdl_seq * b;
+        Token * c;
+        if (
+            (a = _PyPegen_expect_token(p, FSTRING_START))  // token='FSTRING_START'
+            &&
+            (b = _loop0_114_rule(p))  // fstring_middle*
+            &&
+            (c = _PyPegen_expect_token(p, FSTRING_END))  // token='FSTRING_END'
+        )
+        {
+            D(fprintf(stderr, "%*c+ fstring[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "FSTRING_START fstring_middle* FSTRING_END"));
+            _res = _PyPegen_joined_str ( p , a , ( asdl_expr_seq* ) b , c );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s fstring[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "FSTRING_START fstring_middle* FSTRING_END"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
 // string: STRING
 static expr_ty
 string_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15929,8 +16287,7 @@ static expr_ty
 strings_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -15959,7 +16316,7 @@ strings_rule(Parser *p)
         D(fprintf(stderr, "%*c> strings[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "((fstring | string))+"));
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_loop1_113_rule(p))  // ((fstring | string))+
+            (a = (asdl_expr_seq*)_loop1_115_rule(p))  // ((fstring | string))+
         )
         {
             D(fprintf(stderr, "%*c+ strings[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "((fstring | string))+"));
@@ -15996,8 +16353,7 @@ static expr_ty
 list_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16064,8 +16420,7 @@ static expr_ty
 tuple_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16094,7 +16449,7 @@ tuple_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (a = _tmp_114_rule(p), !p->error_indicator)  // [star_named_expression ',' star_named_expressions?]
+            (a = _tmp_116_rule(p), !p->error_indicator)  // [star_named_expression ',' star_named_expressions?]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
         )
@@ -16132,8 +16487,7 @@ static expr_ty
 set_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16200,8 +16554,7 @@ static expr_ty
 dict_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16293,8 +16646,7 @@ static asdl_seq*
 double_starred_kvpairs_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16312,7 +16664,7 @@ double_starred_kvpairs_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_seq * a;
         if (
-            (a = _gather_115_rule(p))  // ','.double_starred_kvpair+
+            (a = _gather_117_rule(p))  // ','.double_starred_kvpair+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -16341,8 +16693,7 @@ static KeyValuePair*
 double_starred_kvpair_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16407,8 +16758,7 @@ static KeyValuePair*
 kvpair_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16457,8 +16807,7 @@ static asdl_comprehension_seq*
 for_if_clauses_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16474,7 +16823,7 @@ for_if_clauses_rule(Parser *p)
         D(fprintf(stderr, "%*c> for_if_clauses[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "for_if_clause+"));
         asdl_comprehension_seq* a;
         if (
-            (a = (asdl_comprehension_seq*)_loop1_117_rule(p))  // for_if_clause+
+            (a = (asdl_comprehension_seq*)_loop1_119_rule(p))  // for_if_clause+
         )
         {
             D(fprintf(stderr, "%*c+ for_if_clauses[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "for_if_clause+"));
@@ -16497,15 +16846,14 @@ for_if_clauses_rule(Parser *p)
 }
 
 // for_if_clause:
-//     | ASYNC 'for' star_targets 'in' ~ disjunction (('if' disjunction))*
+//     | 'async' 'for' star_targets 'in' ~ disjunction (('if' disjunction))*
 //     | 'for' star_targets 'in' ~ disjunction (('if' disjunction))*
 //     | invalid_for_target
 static comprehension_ty
 for_if_clause_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16513,36 +16861,36 @@ for_if_clause_rule(Parser *p)
     }
     comprehension_ty _res = NULL;
     int _mark = p->mark;
-    { // ASYNC 'for' star_targets 'in' ~ disjunction (('if' disjunction))*
+    { // 'async' 'for' star_targets 'in' ~ disjunction (('if' disjunction))*
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> for_if_clause[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC 'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
+        D(fprintf(stderr, "%*c> for_if_clause[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async' 'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
         int _cut_var = 0;
         Token * _keyword;
         Token * _keyword_1;
+        Token * _keyword_2;
         expr_ty a;
-        Token * async_var;
         expr_ty b;
         asdl_expr_seq* c;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
             &&
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword_1 = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (a = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword_2 = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (_cut_var = 1)
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            (c = (asdl_expr_seq*)_loop0_118_rule(p))  // (('if' disjunction))*
+            (c = (asdl_expr_seq*)_loop0_120_rule(p))  // (('if' disjunction))*
         )
         {
-            D(fprintf(stderr, "%*c+ for_if_clause[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC 'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
+            D(fprintf(stderr, "%*c+ for_if_clause[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async' 'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
             _res = CHECK_VERSION ( comprehension_ty , 6 , "Async comprehensions are" , _PyAST_comprehension ( a , b , c , 1 , p -> arena ) );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -16553,7 +16901,7 @@ for_if_clause_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s for_if_clause[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC 'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async' 'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
         if (_cut_var) {
             p->level--;
             return NULL;
@@ -16572,17 +16920,17 @@ for_if_clause_rule(Parser *p)
         expr_ty b;
         asdl_expr_seq* c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (a = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (_cut_var = 1)
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            (c = (asdl_expr_seq*)_loop0_119_rule(p))  // (('if' disjunction))*
+            (c = (asdl_expr_seq*)_loop0_121_rule(p))  // (('if' disjunction))*
         )
         {
             D(fprintf(stderr, "%*c+ for_if_clause[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'for' star_targets 'in' ~ disjunction (('if' disjunction))*"));
@@ -16632,8 +16980,7 @@ static expr_ty
 listcomp_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16722,8 +17069,7 @@ static expr_ty
 setcomp_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16814,8 +17160,7 @@ static expr_ty
 genexp_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16845,7 +17190,7 @@ genexp_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (a = _tmp_120_rule(p))  // assignment_expression | expression !':='
+            (a = _tmp_122_rule(p))  // assignment_expression | expression !':='
             &&
             (b = for_if_clauses_rule(p))  // for_if_clauses
             &&
@@ -16904,8 +17249,7 @@ static expr_ty
 dictcomp_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -16994,8 +17338,7 @@ static expr_ty
 arguments_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17070,8 +17413,7 @@ static expr_ty
 args_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17097,9 +17439,9 @@ args_rule(Parser *p)
         asdl_expr_seq* a;
         void *b;
         if (
-            (a = (asdl_expr_seq*)_gather_121_rule(p))  // ','.(starred_expression | (assignment_expression | expression !':=') !'=')+
+            (a = (asdl_expr_seq*)_gather_123_rule(p))  // ','.(starred_expression | (assignment_expression | expression !':=') !'=')+
             &&
-            (b = _tmp_123_rule(p), !p->error_indicator)  // [',' kwargs]
+            (b = _tmp_125_rule(p), !p->error_indicator)  // [',' kwargs]
         )
         {
             D(fprintf(stderr, "%*c+ args[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.(starred_expression | (assignment_expression | expression !':=') !'=')+ [',' kwargs]"));
@@ -17171,8 +17513,7 @@ static asdl_seq*
 kwargs_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17190,11 +17531,11 @@ kwargs_rule(Parser *p)
         asdl_seq * a;
         asdl_seq * b;
         if (
-            (a = _gather_124_rule(p))  // ','.kwarg_or_starred+
+            (a = _gather_126_rule(p))  // ','.kwarg_or_starred+
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (b = _gather_126_rule(p))  // ','.kwarg_or_double_starred+
+            (b = _gather_128_rule(p))  // ','.kwarg_or_double_starred+
         )
         {
             D(fprintf(stderr, "%*c+ kwargs[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.kwarg_or_starred+ ',' ','.kwarg_or_double_starred+"));
@@ -17216,13 +17557,13 @@ kwargs_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> kwargs[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.kwarg_or_starred+"));
-        asdl_seq * _gather_128_var;
+        asdl_seq * _gather_130_var;
         if (
-            (_gather_128_var = _gather_128_rule(p))  // ','.kwarg_or_starred+
+            (_gather_130_var = _gather_130_rule(p))  // ','.kwarg_or_starred+
         )
         {
             D(fprintf(stderr, "%*c+ kwargs[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.kwarg_or_starred+"));
-            _res = _gather_128_var;
+            _res = _gather_130_var;
             goto done;
         }
         p->mark = _mark;
@@ -17235,13 +17576,13 @@ kwargs_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> kwargs[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.kwarg_or_double_starred+"));
-        asdl_seq * _gather_130_var;
+        asdl_seq * _gather_132_var;
         if (
-            (_gather_130_var = _gather_130_rule(p))  // ','.kwarg_or_double_starred+
+            (_gather_132_var = _gather_132_rule(p))  // ','.kwarg_or_double_starred+
         )
         {
             D(fprintf(stderr, "%*c+ kwargs[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.kwarg_or_double_starred+"));
-            _res = _gather_130_var;
+            _res = _gather_132_var;
             goto done;
         }
         p->mark = _mark;
@@ -17259,8 +17600,7 @@ static expr_ty
 starred_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17343,8 +17683,7 @@ static KeywordOrStarred*
 kwarg_or_starred_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17454,8 +17793,7 @@ static KeywordOrStarred*
 kwarg_or_double_starred_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17577,8 +17915,7 @@ static expr_ty
 star_targets_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17634,7 +17971,7 @@ star_targets_rule(Parser *p)
         if (
             (a = star_target_rule(p))  // star_target
             &&
-            (b = _loop0_132_rule(p))  // ((',' star_target))*
+            (b = _loop0_134_rule(p))  // ((',' star_target))*
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -17672,8 +18009,7 @@ static asdl_expr_seq*
 star_targets_list_seq_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17691,7 +18027,7 @@ star_targets_list_seq_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_gather_133_rule(p))  // ','.star_target+
+            (a = (asdl_expr_seq*)_gather_135_rule(p))  // ','.star_target+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -17720,8 +18056,7 @@ static asdl_expr_seq*
 star_targets_tuple_seq_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17742,7 +18077,7 @@ star_targets_tuple_seq_rule(Parser *p)
         if (
             (a = star_target_rule(p))  // star_target
             &&
-            (b = _loop1_135_rule(p))  // ((',' star_target))+
+            (b = _loop1_137_rule(p))  // ((',' star_target))+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -17798,8 +18133,7 @@ static expr_ty
 star_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -17831,7 +18165,7 @@ star_target_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (a = _tmp_136_rule(p))  // !'*' star_target
+            (a = _tmp_138_rule(p))  // !'*' star_target
         )
         {
             D(fprintf(stderr, "%*c+ star_target[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' (!'*' star_target)"));
@@ -17890,8 +18224,7 @@ static expr_ty
 target_with_star_atom_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18032,8 +18365,7 @@ static expr_ty
 star_atom_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18193,8 +18525,7 @@ static expr_ty
 single_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18288,8 +18619,7 @@ static expr_ty
 single_subscript_attribute_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18409,8 +18739,7 @@ static expr_ty
 t_primary_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     expr_ty _res = NULL;
     if (_PyPegen_is_memoized(p, t_primary_type, &_res)) {
@@ -18444,8 +18773,7 @@ static expr_ty
 t_primary_raw(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18666,8 +18994,7 @@ static void *
 t_lookahead_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18743,8 +19070,7 @@ static asdl_expr_seq*
 del_targets_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18762,7 +19088,7 @@ del_targets_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_gather_137_rule(p))  // ','.del_target+
+            (a = (asdl_expr_seq*)_gather_139_rule(p))  // ','.del_target+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
         )
@@ -18794,8 +19120,7 @@ static expr_ty
 del_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -18932,8 +19257,7 @@ static expr_ty
 del_t_atom_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -19100,8 +19424,7 @@ static asdl_expr_seq*
 type_expressions_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -19123,7 +19446,7 @@ type_expressions_rule(Parser *p)
         expr_ty b;
         expr_ty c;
         if (
-            (a = _gather_139_rule(p))  // ','.expression+
+            (a = _gather_141_rule(p))  // ','.expression+
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
@@ -19162,7 +19485,7 @@ type_expressions_rule(Parser *p)
         asdl_seq * a;
         expr_ty b;
         if (
-            (a = _gather_141_rule(p))  // ','.expression+
+            (a = _gather_143_rule(p))  // ','.expression+
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
@@ -19195,7 +19518,7 @@ type_expressions_rule(Parser *p)
         asdl_seq * a;
         expr_ty b;
         if (
-            (a = _gather_143_rule(p))  // ','.expression+
+            (a = _gather_145_rule(p))  // ','.expression+
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
@@ -19315,7 +19638,7 @@ type_expressions_rule(Parser *p)
         D(fprintf(stderr, "%*c> type_expressions[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.expression+"));
         asdl_expr_seq* a;
         if (
-            (a = (asdl_expr_seq*)_gather_145_rule(p))  // ','.expression+
+            (a = (asdl_expr_seq*)_gather_147_rule(p))  // ','.expression+
         )
         {
             D(fprintf(stderr, "%*c+ type_expressions[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.expression+"));
@@ -19345,8 +19668,7 @@ static Token*
 func_type_comment_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -19367,7 +19689,7 @@ func_type_comment_rule(Parser *p)
             &&
             (t = _PyPegen_expect_token(p, TYPE_COMMENT))  // token='TYPE_COMMENT'
             &&
-            _PyPegen_lookahead(1, _tmp_147_rule, p)
+            _PyPegen_lookahead(1, _tmp_149_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ func_type_comment[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE TYPE_COMMENT &(NEWLINE INDENT)"));
@@ -19428,7 +19750,7 @@ func_type_comment_rule(Parser *p)
 }
 
 // invalid_arguments:
-//     | args ',' '*'
+//     | ((','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs) ',' '*'
 //     | expression for_if_clauses ',' [args | expression for_if_clauses]
 //     | NAME '=' expression for_if_clauses
 //     | [(args ',')] NAME '=' &(',' | ')')
@@ -19439,8 +19761,7 @@ static void *
 invalid_arguments_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -19448,25 +19769,25 @@ invalid_arguments_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // args ',' '*'
+    { // ((','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs) ',' '*'
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_arguments[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "args ',' '*'"));
+        D(fprintf(stderr, "%*c> invalid_arguments[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "((','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs) ',' '*'"));
         Token * _literal;
-        Token * _literal_1;
-        expr_ty a;
+        void *_tmp_150_var;
+        Token * b;
         if (
-            (a = args_rule(p))  // args
+            (_tmp_150_var = _tmp_150_rule(p))  // (','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (_literal_1 = _PyPegen_expect_token(p, 16))  // token='*'
+            (b = _PyPegen_expect_token(p, 16))  // token='*'
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_arguments[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "args ',' '*'"));
-            _res = RAISE_SYNTAX_ERROR_KNOWN_LOCATION ( a , "iterable argument unpacking follows keyword argument unpacking" );
+            D(fprintf(stderr, "%*c+ invalid_arguments[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "((','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs) ',' '*'"));
+            _res = RAISE_SYNTAX_ERROR_KNOWN_LOCATION ( b , "iterable argument unpacking follows keyword argument unpacking" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 p->level--;
@@ -19476,7 +19797,7 @@ invalid_arguments_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_arguments[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "args ',' '*'"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "((','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs) | kwargs) ',' '*'"));
     }
     { // expression for_if_clauses ',' [args | expression for_if_clauses]
         if (p->error_indicator) {
@@ -19496,7 +19817,7 @@ invalid_arguments_rule(Parser *p)
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (_opt_var = _tmp_148_rule(p), !p->error_indicator)  // [args | expression for_if_clauses]
+            (_opt_var = _tmp_151_rule(p), !p->error_indicator)  // [args | expression for_if_clauses]
         )
         {
             D(fprintf(stderr, "%*c+ invalid_arguments[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression for_if_clauses ',' [args | expression for_if_clauses]"));
@@ -19556,13 +19877,13 @@ invalid_arguments_rule(Parser *p)
         expr_ty a;
         Token * b;
         if (
-            (_opt_var = _tmp_149_rule(p), !p->error_indicator)  // [(args ',')]
+            (_opt_var = _tmp_152_rule(p), !p->error_indicator)  // [(args ',')]
             &&
             (a = _PyPegen_name_token(p))  // NAME
             &&
             (b = _PyPegen_expect_token(p, 22))  // token='='
             &&
-            _PyPegen_lookahead(1, _tmp_150_rule, p)
+            _PyPegen_lookahead(1, _tmp_153_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_arguments[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "[(args ',')] NAME '=' &(',' | ')')"));
@@ -19683,8 +20004,7 @@ static void *
 invalid_kwarg_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -19701,7 +20021,7 @@ invalid_kwarg_rule(Parser *p)
         Token* a;
         Token * b;
         if (
-            (a = (Token*)_tmp_151_rule(p))  // 'True' | 'False' | 'None'
+            (a = (Token*)_tmp_154_rule(p))  // 'True' | 'False' | 'None'
             &&
             (b = _PyPegen_expect_token(p, 22))  // token='='
         )
@@ -19761,7 +20081,7 @@ invalid_kwarg_rule(Parser *p)
         expr_ty a;
         Token * b;
         if (
-            _PyPegen_lookahead(0, _tmp_152_rule, p)
+            _PyPegen_lookahead(0, _tmp_155_rule, p)
             &&
             (a = expression_rule(p))  // expression
             &&
@@ -19830,8 +20150,7 @@ expression_without_invalid_rule(Parser *p)
     int _prev_call_invalid = p->call_invalid_rules;
     p->call_invalid_rules = 0;
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->call_invalid_rules = _prev_call_invalid;
@@ -19865,11 +20184,11 @@ expression_without_invalid_rule(Parser *p)
         if (
             (a = disjunction_rule(p))  // disjunction
             &&
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 645))  // token='else'
+            (_keyword_1 = _PyPegen_expect_token(p, 661))  // token='else'
             &&
             (c = expression_rule(p))  // expression
         )
@@ -19950,8 +20269,7 @@ static void *
 invalid_legacy_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -19997,13 +20315,12 @@ invalid_legacy_expression_rule(Parser *p)
 // invalid_expression:
 //     | !(NAME STRING | SOFT_KEYWORD) disjunction expression_without_invalid
 //     | disjunction 'if' disjunction !('else' | ':')
-//     | 'lambda' lambda_params? ':' &(FSTRING_MIDDLE | fstring_replacement_field)
+//     | 'lambda' lambda_params? ':' &FSTRING_MIDDLE
 static void *
 invalid_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20020,7 +20337,7 @@ invalid_expression_rule(Parser *p)
         expr_ty a;
         expr_ty b;
         if (
-            _PyPegen_lookahead(0, _tmp_153_rule, p)
+            _PyPegen_lookahead(0, _tmp_156_rule, p)
             &&
             (a = disjunction_rule(p))  // disjunction
             &&
@@ -20052,11 +20369,11 @@ invalid_expression_rule(Parser *p)
         if (
             (a = disjunction_rule(p))  // disjunction
             &&
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            _PyPegen_lookahead(0, _tmp_154_rule, p)
+            _PyPegen_lookahead(0, _tmp_157_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_expression[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "disjunction 'if' disjunction !('else' | ':')"));
@@ -20072,27 +20389,27 @@ invalid_expression_rule(Parser *p)
         D(fprintf(stderr, "%*c%s invalid_expression[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "disjunction 'if' disjunction !('else' | ':')"));
     }
-    { // 'lambda' lambda_params? ':' &(FSTRING_MIDDLE | fstring_replacement_field)
+    { // 'lambda' lambda_params? ':' &FSTRING_MIDDLE
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_expression[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'lambda' lambda_params? ':' &(FSTRING_MIDDLE | fstring_replacement_field)"));
+        D(fprintf(stderr, "%*c> invalid_expression[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'lambda' lambda_params? ':' &FSTRING_MIDDLE"));
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         Token * b;
         if (
-            (a = _PyPegen_expect_token(p, 600))  // token='lambda'
+            (a = _PyPegen_expect_token(p, 609))  // token='lambda'
             &&
             (_opt_var = lambda_params_rule(p), !p->error_indicator)  // lambda_params?
             &&
             (b = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            _PyPegen_lookahead(1, _tmp_155_rule, p)
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, FSTRING_MIDDLE)  // token=FSTRING_MIDDLE
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_expression[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'lambda' lambda_params? ':' &(FSTRING_MIDDLE | fstring_replacement_field)"));
+            D(fprintf(stderr, "%*c+ invalid_expression[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'lambda' lambda_params? ':' &FSTRING_MIDDLE"));
             _res = RAISE_SYNTAX_ERROR_KNOWN_RANGE ( a , b , "f-string: lambda expressions are not allowed without parentheses" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -20103,7 +20420,7 @@ invalid_expression_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_expression[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'lambda' lambda_params? ':' &(FSTRING_MIDDLE | fstring_replacement_field)"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'lambda' lambda_params? ':' &FSTRING_MIDDLE"));
     }
     _res = NULL;
   done:
@@ -20119,8 +20436,7 @@ static void *
 invalid_named_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20178,7 +20494,7 @@ invalid_named_expression_rule(Parser *p)
             &&
             (b = bitwise_or_rule(p))  // bitwise_or
             &&
-            _PyPegen_lookahead(0, _tmp_156_rule, p)
+            _PyPegen_lookahead(0, _tmp_158_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_named_expression[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME '=' bitwise_or !('=' | ':=')"));
@@ -20204,7 +20520,7 @@ invalid_named_expression_rule(Parser *p)
         Token * b;
         expr_ty bitwise_or_var;
         if (
-            _PyPegen_lookahead(0, _tmp_157_rule, p)
+            _PyPegen_lookahead(0, _tmp_159_rule, p)
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
             &&
@@ -20212,7 +20528,7 @@ invalid_named_expression_rule(Parser *p)
             &&
             (bitwise_or_var = bitwise_or_rule(p))  // bitwise_or
             &&
-            _PyPegen_lookahead(0, _tmp_158_rule, p)
+            _PyPegen_lookahead(0, _tmp_160_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_named_expression[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "!(list | tuple | genexp | 'True' | 'None' | 'False') bitwise_or '=' bitwise_or !('=' | ':=')"));
@@ -20246,8 +20562,7 @@ static void *
 invalid_assignment_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20293,7 +20608,7 @@ invalid_assignment_rule(Parser *p)
         D(fprintf(stderr, "%*c> invalid_assignment[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expression ',' star_named_expressions* ':' expression"));
         Token * _literal;
         Token * _literal_1;
-        asdl_seq * _loop0_159_var;
+        asdl_seq * _loop0_161_var;
         expr_ty a;
         expr_ty expression_var;
         if (
@@ -20301,7 +20616,7 @@ invalid_assignment_rule(Parser *p)
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (_loop0_159_var = _loop0_159_rule(p))  // star_named_expressions*
+            (_loop0_161_var = _loop0_161_rule(p))  // star_named_expressions*
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -20358,10 +20673,10 @@ invalid_assignment_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_assignment[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "((star_targets '='))* star_expressions '='"));
         Token * _literal;
-        asdl_seq * _loop0_160_var;
+        asdl_seq * _loop0_162_var;
         expr_ty a;
         if (
-            (_loop0_160_var = _loop0_160_rule(p))  // ((star_targets '='))*
+            (_loop0_162_var = _loop0_162_rule(p))  // ((star_targets '='))*
             &&
             (a = star_expressions_rule(p))  // star_expressions
             &&
@@ -20388,10 +20703,10 @@ invalid_assignment_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_assignment[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "((star_targets '='))* yield_expr '='"));
         Token * _literal;
-        asdl_seq * _loop0_161_var;
+        asdl_seq * _loop0_163_var;
         expr_ty a;
         if (
-            (_loop0_161_var = _loop0_161_rule(p))  // ((star_targets '='))*
+            (_loop0_163_var = _loop0_163_rule(p))  // ((star_targets '='))*
             &&
             (a = yield_expr_rule(p))  // yield_expr
             &&
@@ -20417,7 +20732,7 @@ invalid_assignment_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_assignment[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions augassign (yield_expr | star_expressions)"));
-        void *_tmp_162_var;
+        void *_tmp_164_var;
         expr_ty a;
         AugOperator* augassign_var;
         if (
@@ -20425,7 +20740,7 @@ invalid_assignment_rule(Parser *p)
             &&
             (augassign_var = augassign_rule(p))  // augassign
             &&
-            (_tmp_162_var = _tmp_162_rule(p))  // yield_expr | star_expressions
+            (_tmp_164_var = _tmp_164_rule(p))  // yield_expr | star_expressions
         )
         {
             D(fprintf(stderr, "%*c+ invalid_assignment[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions augassign (yield_expr | star_expressions)"));
@@ -20452,8 +20767,7 @@ static expr_ty
 invalid_ann_assign_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20540,8 +20854,7 @@ static void *
 invalid_del_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20558,7 +20871,7 @@ invalid_del_stmt_rule(Parser *p)
         Token * _keyword;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 604))  // token='del'
+            (_keyword = _PyPegen_expect_token(p, 613))  // token='del'
             &&
             (a = star_expressions_rule(p))  // star_expressions
         )
@@ -20587,8 +20900,7 @@ static void *
 invalid_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20636,8 +20948,7 @@ static void *
 invalid_comprehension_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20651,11 +20962,11 @@ invalid_comprehension_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_comprehension[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('[' | '(' | '{') starred_expression for_if_clauses"));
-        void *_tmp_163_var;
+        void *_tmp_165_var;
         expr_ty a;
         asdl_comprehension_seq* for_if_clauses_var;
         if (
-            (_tmp_163_var = _tmp_163_rule(p))  // '[' | '(' | '{'
+            (_tmp_165_var = _tmp_165_rule(p))  // '[' | '(' | '{'
             &&
             (a = starred_expression_rule(p))  // starred_expression
             &&
@@ -20682,12 +20993,12 @@ invalid_comprehension_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_comprehension[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('[' | '{') star_named_expression ',' star_named_expressions for_if_clauses"));
         Token * _literal;
-        void *_tmp_164_var;
+        void *_tmp_166_var;
         expr_ty a;
         asdl_expr_seq* b;
         asdl_comprehension_seq* for_if_clauses_var;
         if (
-            (_tmp_164_var = _tmp_164_rule(p))  // '[' | '{'
+            (_tmp_166_var = _tmp_166_rule(p))  // '[' | '{'
             &&
             (a = star_named_expression_rule(p))  // star_named_expression
             &&
@@ -20717,12 +21028,12 @@ invalid_comprehension_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_comprehension[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('[' | '{') star_named_expression ',' for_if_clauses"));
-        void *_tmp_165_var;
+        void *_tmp_167_var;
         expr_ty a;
         Token * b;
         asdl_comprehension_seq* for_if_clauses_var;
         if (
-            (_tmp_165_var = _tmp_165_rule(p))  // '[' | '{'
+            (_tmp_167_var = _tmp_167_rule(p))  // '[' | '{'
             &&
             (a = star_named_expression_rule(p))  // star_named_expression
             &&
@@ -20755,8 +21066,7 @@ static void *
 invalid_dict_comprehension_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20817,8 +21127,7 @@ static void *
 invalid_parameters_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -20859,13 +21168,13 @@ invalid_parameters_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(slash_no_default | slash_with_default) param_maybe_default* '/'"));
-        asdl_seq * _loop0_167_var;
-        void *_tmp_166_var;
+        asdl_seq * _loop0_169_var;
+        void *_tmp_168_var;
         Token * a;
         if (
-            (_tmp_166_var = _tmp_166_rule(p))  // slash_no_default | slash_with_default
+            (_tmp_168_var = _tmp_168_rule(p))  // slash_no_default | slash_with_default
             &&
-            (_loop0_167_var = _loop0_167_rule(p))  // param_maybe_default*
+            (_loop0_169_var = _loop0_169_rule(p))  // param_maybe_default*
             &&
             (a = _PyPegen_expect_token(p, 17))  // token='/'
         )
@@ -20889,7 +21198,7 @@ invalid_parameters_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_no_default? param_no_default* invalid_parameters_helper param_no_default"));
-        asdl_seq * _loop0_168_var;
+        asdl_seq * _loop0_170_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         arg_ty a;
@@ -20897,7 +21206,7 @@ invalid_parameters_rule(Parser *p)
         if (
             (_opt_var = slash_no_default_rule(p), !p->error_indicator)  // slash_no_default?
             &&
-            (_loop0_168_var = _loop0_168_rule(p))  // param_no_default*
+            (_loop0_170_var = _loop0_170_rule(p))  // param_no_default*
             &&
             (invalid_parameters_helper_var = invalid_parameters_helper_rule(p))  // invalid_parameters_helper
             &&
@@ -20923,18 +21232,18 @@ invalid_parameters_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default* '(' param_no_default+ ','? ')'"));
-        asdl_seq * _loop0_169_var;
-        asdl_seq * _loop1_170_var;
+        asdl_seq * _loop0_171_var;
+        asdl_seq * _loop1_172_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         Token * b;
         if (
-            (_loop0_169_var = _loop0_169_rule(p))  // param_no_default*
+            (_loop0_171_var = _loop0_171_rule(p))  // param_no_default*
             &&
             (a = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (_loop1_170_var = _loop1_170_rule(p))  // param_no_default+
+            (_loop1_172_var = _loop1_172_rule(p))  // param_no_default+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
             &&
@@ -20961,22 +21270,22 @@ invalid_parameters_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "[(slash_no_default | slash_with_default)] param_maybe_default* '*' (',' | param_no_default) param_maybe_default* '/'"));
         Token * _literal;
-        asdl_seq * _loop0_172_var;
         asdl_seq * _loop0_174_var;
+        asdl_seq * _loop0_176_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
-        void *_tmp_173_var;
+        void *_tmp_175_var;
         Token * a;
         if (
-            (_opt_var = _tmp_171_rule(p), !p->error_indicator)  // [(slash_no_default | slash_with_default)]
+            (_opt_var = _tmp_173_rule(p), !p->error_indicator)  // [(slash_no_default | slash_with_default)]
             &&
-            (_loop0_172_var = _loop0_172_rule(p))  // param_maybe_default*
+            (_loop0_174_var = _loop0_174_rule(p))  // param_maybe_default*
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_173_var = _tmp_173_rule(p))  // ',' | param_no_default
+            (_tmp_175_var = _tmp_175_rule(p))  // ',' | param_no_default
             &&
-            (_loop0_174_var = _loop0_174_rule(p))  // param_maybe_default*
+            (_loop0_176_var = _loop0_176_rule(p))  // param_maybe_default*
             &&
             (a = _PyPegen_expect_token(p, 17))  // token='/'
         )
@@ -21001,10 +21310,10 @@ invalid_parameters_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default+ '/' '*'"));
         Token * _literal;
-        asdl_seq * _loop1_175_var;
+        asdl_seq * _loop1_177_var;
         Token * a;
         if (
-            (_loop1_175_var = _loop1_175_rule(p))  // param_maybe_default+
+            (_loop1_177_var = _loop1_177_rule(p))  // param_maybe_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -21035,8 +21344,7 @@ static void *
 invalid_default_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21054,7 +21362,7 @@ invalid_default_rule(Parser *p)
         if (
             (a = _PyPegen_expect_token(p, 22))  // token='='
             &&
-            _PyPegen_lookahead(1, _tmp_176_rule, p)
+            _PyPegen_lookahead(1, _tmp_178_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_default[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'=' &(')' | ',')"));
@@ -21085,8 +21393,7 @@ static void *
 invalid_star_etc_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21100,12 +21407,12 @@ invalid_star_etc_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_star_etc[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*' (')' | ',' (')' | '**'))"));
-        void *_tmp_177_var;
+        void *_tmp_179_var;
         Token * a;
         if (
             (a = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_177_var = _tmp_177_rule(p))  // ')' | ',' (')' | '**')
+            (_tmp_179_var = _tmp_179_rule(p))  // ')' | ',' (')' | '**')
         )
         {
             D(fprintf(stderr, "%*c+ invalid_star_etc[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' (')' | ',' (')' | '**'))"));
@@ -21188,20 +21495,20 @@ invalid_star_etc_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_star_etc[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*' (param_no_default | ',') param_maybe_default* '*' (param_no_default | ',')"));
         Token * _literal;
-        asdl_seq * _loop0_179_var;
-        void *_tmp_178_var;
+        asdl_seq * _loop0_181_var;
         void *_tmp_180_var;
+        void *_tmp_182_var;
         Token * a;
         if (
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_178_var = _tmp_178_rule(p))  // param_no_default | ','
+            (_tmp_180_var = _tmp_180_rule(p))  // param_no_default | ','
             &&
-            (_loop0_179_var = _loop0_179_rule(p))  // param_maybe_default*
+            (_loop0_181_var = _loop0_181_rule(p))  // param_maybe_default*
             &&
             (a = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_180_var = _tmp_180_rule(p))  // param_no_default | ','
+            (_tmp_182_var = _tmp_182_rule(p))  // param_no_default | ','
         )
         {
             D(fprintf(stderr, "%*c+ invalid_star_etc[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' (param_no_default | ',') param_maybe_default* '*' (param_no_default | ',')"));
@@ -21228,8 +21535,7 @@ static void *
 invalid_kwds_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21317,7 +21623,7 @@ invalid_kwds_rule(Parser *p)
             &&
             (_literal_1 = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (a = (Token*)_tmp_181_rule(p))  // '*' | '**' | '/'
+            (a = (Token*)_tmp_183_rule(p))  // '*' | '**' | '/'
         )
         {
             D(fprintf(stderr, "%*c+ invalid_kwds[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**' param ',' ('*' | '**' | '/')"));
@@ -21344,8 +21650,7 @@ static void *
 invalid_parameters_helper_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21383,13 +21688,13 @@ invalid_parameters_helper_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_parameters_helper[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default+"));
-        asdl_seq * _loop1_182_var;
+        asdl_seq * _loop1_184_var;
         if (
-            (_loop1_182_var = _loop1_182_rule(p))  // param_with_default+
+            (_loop1_184_var = _loop1_184_rule(p))  // param_with_default+
         )
         {
             D(fprintf(stderr, "%*c+ invalid_parameters_helper[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_with_default+"));
-            _res = _loop1_182_var;
+            _res = _loop1_184_var;
             goto done;
         }
         p->mark = _mark;
@@ -21413,8 +21718,7 @@ static void *
 invalid_lambda_parameters_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21455,13 +21759,13 @@ invalid_lambda_parameters_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_lambda_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(lambda_slash_no_default | lambda_slash_with_default) lambda_param_maybe_default* '/'"));
-        asdl_seq * _loop0_184_var;
-        void *_tmp_183_var;
+        asdl_seq * _loop0_186_var;
+        void *_tmp_185_var;
         Token * a;
         if (
-            (_tmp_183_var = _tmp_183_rule(p))  // lambda_slash_no_default | lambda_slash_with_default
+            (_tmp_185_var = _tmp_185_rule(p))  // lambda_slash_no_default | lambda_slash_with_default
             &&
-            (_loop0_184_var = _loop0_184_rule(p))  // lambda_param_maybe_default*
+            (_loop0_186_var = _loop0_186_rule(p))  // lambda_param_maybe_default*
             &&
             (a = _PyPegen_expect_token(p, 17))  // token='/'
         )
@@ -21485,7 +21789,7 @@ invalid_lambda_parameters_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_lambda_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default? lambda_param_no_default* invalid_lambda_parameters_helper lambda_param_no_default"));
-        asdl_seq * _loop0_185_var;
+        asdl_seq * _loop0_187_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         arg_ty a;
@@ -21493,7 +21797,7 @@ invalid_lambda_parameters_rule(Parser *p)
         if (
             (_opt_var = lambda_slash_no_default_rule(p), !p->error_indicator)  // lambda_slash_no_default?
             &&
-            (_loop0_185_var = _loop0_185_rule(p))  // lambda_param_no_default*
+            (_loop0_187_var = _loop0_187_rule(p))  // lambda_param_no_default*
             &&
             (invalid_lambda_parameters_helper_var = invalid_lambda_parameters_helper_rule(p))  // invalid_lambda_parameters_helper
             &&
@@ -21519,18 +21823,18 @@ invalid_lambda_parameters_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_lambda_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default* '(' ','.lambda_param+ ','? ')'"));
-        asdl_seq * _gather_187_var;
-        asdl_seq * _loop0_186_var;
+        asdl_seq * _gather_189_var;
+        asdl_seq * _loop0_188_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         Token * b;
         if (
-            (_loop0_186_var = _loop0_186_rule(p))  // lambda_param_no_default*
+            (_loop0_188_var = _loop0_188_rule(p))  // lambda_param_no_default*
             &&
             (a = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (_gather_187_var = _gather_187_rule(p))  // ','.lambda_param+
+            (_gather_189_var = _gather_189_rule(p))  // ','.lambda_param+
             &&
             (_opt_var = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
             &&
@@ -21557,22 +21861,22 @@ invalid_lambda_parameters_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_lambda_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "[(lambda_slash_no_default | lambda_slash_with_default)] lambda_param_maybe_default* '*' (',' | lambda_param_no_default) lambda_param_maybe_default* '/'"));
         Token * _literal;
-        asdl_seq * _loop0_190_var;
         asdl_seq * _loop0_192_var;
+        asdl_seq * _loop0_194_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
-        void *_tmp_191_var;
+        void *_tmp_193_var;
         Token * a;
         if (
-            (_opt_var = _tmp_189_rule(p), !p->error_indicator)  // [(lambda_slash_no_default | lambda_slash_with_default)]
+            (_opt_var = _tmp_191_rule(p), !p->error_indicator)  // [(lambda_slash_no_default | lambda_slash_with_default)]
             &&
-            (_loop0_190_var = _loop0_190_rule(p))  // lambda_param_maybe_default*
+            (_loop0_192_var = _loop0_192_rule(p))  // lambda_param_maybe_default*
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_191_var = _tmp_191_rule(p))  // ',' | lambda_param_no_default
+            (_tmp_193_var = _tmp_193_rule(p))  // ',' | lambda_param_no_default
             &&
-            (_loop0_192_var = _loop0_192_rule(p))  // lambda_param_maybe_default*
+            (_loop0_194_var = _loop0_194_rule(p))  // lambda_param_maybe_default*
             &&
             (a = _PyPegen_expect_token(p, 17))  // token='/'
         )
@@ -21597,10 +21901,10 @@ invalid_lambda_parameters_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_lambda_parameters[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default+ '/' '*'"));
         Token * _literal;
-        asdl_seq * _loop1_193_var;
+        asdl_seq * _loop1_195_var;
         Token * a;
         if (
-            (_loop1_193_var = _loop1_193_rule(p))  // lambda_param_maybe_default+
+            (_loop1_195_var = _loop1_195_rule(p))  // lambda_param_maybe_default+
             &&
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
             &&
@@ -21633,8 +21937,7 @@ static void *
 invalid_lambda_parameters_helper_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21672,13 +21975,13 @@ invalid_lambda_parameters_helper_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_lambda_parameters_helper[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default+"));
-        asdl_seq * _loop1_194_var;
+        asdl_seq * _loop1_196_var;
         if (
-            (_loop1_194_var = _loop1_194_rule(p))  // lambda_param_with_default+
+            (_loop1_196_var = _loop1_196_rule(p))  // lambda_param_with_default+
         )
         {
             D(fprintf(stderr, "%*c+ invalid_lambda_parameters_helper[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default+"));
-            _res = _loop1_194_var;
+            _res = _loop1_196_var;
             goto done;
         }
         p->mark = _mark;
@@ -21699,8 +22002,7 @@ static void *
 invalid_lambda_star_etc_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21715,11 +22017,11 @@ invalid_lambda_star_etc_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_lambda_star_etc[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*' (':' | ',' (':' | '**'))"));
         Token * _literal;
-        void *_tmp_195_var;
+        void *_tmp_197_var;
         if (
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_195_var = _tmp_195_rule(p))  // ':' | ',' (':' | '**')
+            (_tmp_197_var = _tmp_197_rule(p))  // ':' | ',' (':' | '**')
         )
         {
             D(fprintf(stderr, "%*c+ invalid_lambda_star_etc[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' (':' | ',' (':' | '**'))"));
@@ -21772,20 +22074,20 @@ invalid_lambda_star_etc_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_lambda_star_etc[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*' (lambda_param_no_default | ',') lambda_param_maybe_default* '*' (lambda_param_no_default | ',')"));
         Token * _literal;
-        asdl_seq * _loop0_197_var;
-        void *_tmp_196_var;
+        asdl_seq * _loop0_199_var;
         void *_tmp_198_var;
+        void *_tmp_200_var;
         Token * a;
         if (
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_196_var = _tmp_196_rule(p))  // lambda_param_no_default | ','
+            (_tmp_198_var = _tmp_198_rule(p))  // lambda_param_no_default | ','
             &&
-            (_loop0_197_var = _loop0_197_rule(p))  // lambda_param_maybe_default*
+            (_loop0_199_var = _loop0_199_rule(p))  // lambda_param_maybe_default*
             &&
             (a = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_198_var = _tmp_198_rule(p))  // lambda_param_no_default | ','
+            (_tmp_200_var = _tmp_200_rule(p))  // lambda_param_no_default | ','
         )
         {
             D(fprintf(stderr, "%*c+ invalid_lambda_star_etc[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*' (lambda_param_no_default | ',') lambda_param_maybe_default* '*' (lambda_param_no_default | ',')"));
@@ -21815,8 +22117,7 @@ static void *
 invalid_lambda_kwds_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21904,7 +22205,7 @@ invalid_lambda_kwds_rule(Parser *p)
             &&
             (_literal_1 = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (a = (Token*)_tmp_199_rule(p))  // '*' | '**' | '/'
+            (a = (Token*)_tmp_201_rule(p))  // '*' | '**' | '/'
         )
         {
             D(fprintf(stderr, "%*c+ invalid_lambda_kwds[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**' lambda_param ',' ('*' | '**' | '/')"));
@@ -21931,8 +22232,7 @@ static void *
 invalid_double_type_comments_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -21987,8 +22287,7 @@ static void *
 invalid_with_item_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22008,11 +22307,11 @@ invalid_with_item_rule(Parser *p)
         if (
             (expression_var = expression_rule(p))  // expression
             &&
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (a = expression_rule(p))  // expression
             &&
-            _PyPegen_lookahead(1, _tmp_200_rule, p)
+            _PyPegen_lookahead(1, _tmp_202_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_with_item[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression 'as' expression &(',' | ')' | ':')"));
@@ -22034,13 +22333,12 @@ invalid_with_item_rule(Parser *p)
     return _res;
 }
 
-// invalid_for_target: ASYNC? 'for' star_expressions
+// invalid_for_target: 'async'? 'for' star_expressions
 static void *
 invalid_for_target_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22048,25 +22346,25 @@ invalid_for_target_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // ASYNC? 'for' star_expressions
+    { // 'async'? 'for' star_expressions
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_for_target[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'for' star_expressions"));
+        D(fprintf(stderr, "%*c> invalid_for_target[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'for' star_expressions"));
         Token * _keyword;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty a;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (a = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_for_target[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'for' star_expressions"));
+            D(fprintf(stderr, "%*c+ invalid_for_target[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'for' star_expressions"));
             _res = RAISE_SYNTAX_ERROR_INVALID_TARGET ( FOR_TARGETS , a );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -22077,7 +22375,7 @@ invalid_for_target_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_for_target[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'for' star_expressions"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'for' star_expressions"));
     }
     _res = NULL;
   done:
@@ -22090,8 +22388,7 @@ static void *
 invalid_group_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22168,13 +22465,12 @@ invalid_group_rule(Parser *p)
     return _res;
 }
 
-// invalid_import: 'import' dotted_name 'from' dotted_name
+// invalid_import: 'import' ','.dotted_name+ 'from' dotted_name
 static void *
 invalid_import_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22182,27 +22478,27 @@ invalid_import_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // 'import' dotted_name 'from' dotted_name
+    { // 'import' ','.dotted_name+ 'from' dotted_name
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_import[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'import' dotted_name 'from' dotted_name"));
+        D(fprintf(stderr, "%*c> invalid_import[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'import' ','.dotted_name+ 'from' dotted_name"));
+        asdl_seq * _gather_203_var;
         Token * _keyword;
         Token * a;
         expr_ty dotted_name_var;
-        expr_ty dotted_name_var_1;
         if (
-            (a = _PyPegen_expect_token(p, 607))  // token='import'
+            (a = _PyPegen_expect_token(p, 617))  // token='import'
             &&
-            (dotted_name_var = dotted_name_rule(p))  // dotted_name
+            (_gather_203_var = _gather_203_rule(p))  // ','.dotted_name+
             &&
-            (_keyword = _PyPegen_expect_token(p, 608))  // token='from'
+            (_keyword = _PyPegen_expect_token(p, 618))  // token='from'
             &&
-            (dotted_name_var_1 = dotted_name_rule(p))  // dotted_name
+            (dotted_name_var = dotted_name_rule(p))  // dotted_name
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_import[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'import' dotted_name 'from' dotted_name"));
+            D(fprintf(stderr, "%*c+ invalid_import[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'import' ','.dotted_name+ 'from' dotted_name"));
             _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "Did you mean to use 'from ... import ...' instead?" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -22213,7 +22509,7 @@ invalid_import_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_import[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'import' dotted_name 'from' dotted_name"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'import' ','.dotted_name+ 'from' dotted_name"));
     }
     _res = NULL;
   done:
@@ -22226,8 +22522,7 @@ static void *
 invalid_import_from_targets_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22271,15 +22566,90 @@ invalid_import_from_targets_rule(Parser *p)
     return _res;
 }
 
+// invalid_compound_stmt: 'elif' named_expression ':' | 'else' ':'
+static void *
+invalid_compound_stmt_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void * _res = NULL;
+    int _mark = p->mark;
+    { // 'elif' named_expression ':'
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> invalid_compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'elif' named_expression ':'"));
+        Token * _literal;
+        Token * a;
+        expr_ty named_expression_var;
+        if (
+            (a = _PyPegen_expect_token(p, 660))  // token='elif'
+            &&
+            (named_expression_var = named_expression_rule(p))  // named_expression
+            &&
+            (_literal = _PyPegen_expect_token(p, 11))  // token=':'
+        )
+        {
+            D(fprintf(stderr, "%*c+ invalid_compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'elif' named_expression ':'"));
+            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "'elif' must match an if-statement here" );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s invalid_compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'elif' named_expression ':'"));
+    }
+    { // 'else' ':'
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> invalid_compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'else' ':'"));
+        Token * _literal;
+        Token * a;
+        if (
+            (a = _PyPegen_expect_token(p, 661))  // token='else'
+            &&
+            (_literal = _PyPegen_expect_token(p, 11))  // token=':'
+        )
+        {
+            D(fprintf(stderr, "%*c+ invalid_compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'else' ':'"));
+            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "'else' must match a valid statement here" );
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                p->level--;
+                return NULL;
+            }
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s invalid_compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'else' ':'"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
 // invalid_with_stmt:
-//     | ASYNC? 'with' ','.(expression ['as' star_target])+ NEWLINE
-//     | ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE
+//     | 'async'? 'with' ','.(expression ['as' star_target])+ NEWLINE
+//     | 'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE
 static void *
 invalid_with_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22287,28 +22657,28 @@ invalid_with_stmt_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // ASYNC? 'with' ','.(expression ['as' star_target])+ NEWLINE
+    { // 'async'? 'with' ','.(expression ['as' star_target])+ NEWLINE
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' ','.(expression ['as' star_target])+ NEWLINE"));
-        asdl_seq * _gather_201_var;
+        D(fprintf(stderr, "%*c> invalid_with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'with' ','.(expression ['as' star_target])+ NEWLINE"));
+        asdl_seq * _gather_205_var;
         Token * _keyword;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 631))  // token='with'
             &&
-            (_gather_201_var = _gather_201_rule(p))  // ','.(expression ['as' star_target])+
+            (_gather_205_var = _gather_205_rule(p))  // ','.(expression ['as' star_target])+
             &&
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' ','.(expression ['as' star_target])+ NEWLINE"));
+            D(fprintf(stderr, "%*c+ invalid_with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'with' ','.(expression ['as' star_target])+ NEWLINE"));
             _res = RAISE_SYNTAX_ERROR ( "expected ':'" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -22319,15 +22689,15 @@ invalid_with_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'with' ','.(expression ['as' star_target])+ NEWLINE"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'with' ','.(expression ['as' star_target])+ NEWLINE"));
     }
-    { // ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE
+    { // 'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE"));
-        asdl_seq * _gather_203_var;
+        D(fprintf(stderr, "%*c> invalid_with_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE"));
+        asdl_seq * _gather_207_var;
         Token * _keyword;
         Token * _literal;
         Token * _literal_1;
@@ -22337,13 +22707,13 @@ invalid_with_stmt_rule(Parser *p)
         UNUSED(_opt_var_1); // Silence compiler warnings
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 631))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (_gather_203_var = _gather_203_rule(p))  // ','.(expressions ['as' star_target])+
+            (_gather_207_var = _gather_207_rule(p))  // ','.(expressions ['as' star_target])+
             &&
             (_opt_var_1 = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
             &&
@@ -22352,7 +22722,7 @@ invalid_with_stmt_rule(Parser *p)
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE"));
+            D(fprintf(stderr, "%*c+ invalid_with_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE"));
             _res = RAISE_SYNTAX_ERROR ( "expected ':'" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -22363,7 +22733,7 @@ invalid_with_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_with_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE"));
     }
     _res = NULL;
   done:
@@ -22372,14 +22742,13 @@ invalid_with_stmt_rule(Parser *p)
 }
 
 // invalid_with_stmt_indent:
-//     | ASYNC? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT
-//     | ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT
+//     | 'async'? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT
+//     | 'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT
 static void *
 invalid_with_stmt_indent_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22387,24 +22756,24 @@ invalid_with_stmt_indent_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // ASYNC? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT
+    { // 'async'? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_with_stmt_indent[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT"));
-        asdl_seq * _gather_205_var;
+        D(fprintf(stderr, "%*c> invalid_with_stmt_indent[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT"));
+        asdl_seq * _gather_209_var;
         Token * _literal;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 615))  // token='with'
+            (a = _PyPegen_expect_token(p, 631))  // token='with'
             &&
-            (_gather_205_var = _gather_205_rule(p))  // ','.(expression ['as' star_target])+
+            (_gather_209_var = _gather_209_rule(p))  // ','.(expression ['as' star_target])+
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -22413,7 +22782,7 @@ invalid_with_stmt_indent_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, INDENT)  // token=INDENT
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_with_stmt_indent[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT"));
+            D(fprintf(stderr, "%*c+ invalid_with_stmt_indent[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT"));
             _res = RAISE_INDENTATION_ERROR ( "expected an indented block after 'with' statement on line %d" , a -> lineno );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -22424,15 +22793,15 @@ invalid_with_stmt_indent_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_with_stmt_indent[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT"));
     }
-    { // ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT
+    { // 'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_with_stmt_indent[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT"));
-        asdl_seq * _gather_207_var;
+        D(fprintf(stderr, "%*c> invalid_with_stmt_indent[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT"));
+        asdl_seq * _gather_211_var;
         Token * _literal;
         Token * _literal_1;
         Token * _literal_2;
@@ -22443,13 +22812,13 @@ invalid_with_stmt_indent_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 615))  // token='with'
+            (a = _PyPegen_expect_token(p, 631))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (_gather_207_var = _gather_207_rule(p))  // ','.(expressions ['as' star_target])+
+            (_gather_211_var = _gather_211_rule(p))  // ','.(expressions ['as' star_target])+
             &&
             (_opt_var_1 = _PyPegen_expect_token(p, 12), !p->error_indicator)  // ','?
             &&
@@ -22462,7 +22831,7 @@ invalid_with_stmt_indent_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, INDENT)  // token=INDENT
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_with_stmt_indent[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT"));
+            D(fprintf(stderr, "%*c+ invalid_with_stmt_indent[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT"));
             _res = RAISE_INDENTATION_ERROR ( "expected an indented block after 'with' statement on line %d" , a -> lineno );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -22473,7 +22842,7 @@ invalid_with_stmt_indent_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_with_stmt_indent[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT"));
     }
     _res = NULL;
   done:
@@ -22490,8 +22859,7 @@ static void *
 invalid_try_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22509,7 +22877,7 @@ invalid_try_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 624))  // token='try'
+            (a = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -22541,13 +22909,13 @@ invalid_try_stmt_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* block_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 624))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
             (block_var = block_rule(p))  // block
             &&
-            _PyPegen_lookahead(0, _tmp_209_rule, p)
+            _PyPegen_lookahead(0, _tmp_213_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_try_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'try' ':' block !('except' | 'finally')"));
@@ -22572,29 +22940,29 @@ invalid_try_stmt_rule(Parser *p)
         Token * _keyword;
         Token * _literal;
         Token * _literal_1;
-        asdl_seq * _loop0_210_var;
-        asdl_seq * _loop1_211_var;
+        asdl_seq * _loop0_214_var;
+        asdl_seq * _loop1_215_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         Token * b;
         expr_ty expression_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 624))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            (_loop0_210_var = _loop0_210_rule(p))  // block*
+            (_loop0_214_var = _loop0_214_rule(p))  // block*
             &&
-            (_loop1_211_var = _loop1_211_rule(p))  // except_block+
+            (_loop1_215_var = _loop1_215_rule(p))  // except_block+
             &&
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (b = _PyPegen_expect_token(p, 16))  // token='*'
             &&
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var = _tmp_212_rule(p), !p->error_indicator)  // ['as' NAME]
+            (_opt_var = _tmp_216_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
         )
@@ -22621,23 +22989,23 @@ invalid_try_stmt_rule(Parser *p)
         Token * _keyword;
         Token * _literal;
         Token * _literal_1;
-        asdl_seq * _loop0_213_var;
-        asdl_seq * _loop1_214_var;
+        asdl_seq * _loop0_217_var;
+        asdl_seq * _loop1_218_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 624))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 640))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            (_loop0_213_var = _loop0_213_rule(p))  // block*
+            (_loop0_217_var = _loop0_217_rule(p))  // block*
             &&
-            (_loop1_214_var = _loop1_214_rule(p))  // except_star_block+
+            (_loop1_218_var = _loop1_218_rule(p))  // except_star_block+
             &&
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
-            (_opt_var = _tmp_215_rule(p), !p->error_indicator)  // [expression ['as' NAME]]
+            (_opt_var = _tmp_219_rule(p), !p->error_indicator)  // [expression ['as' NAME]]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
         )
@@ -22670,8 +23038,7 @@ static void *
 invalid_except_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22695,7 +23062,7 @@ invalid_except_stmt_rule(Parser *p)
         expr_ty a;
         expr_ty expressions_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 637))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_opt_var = _PyPegen_expect_token(p, 16), !p->error_indicator)  // '*'?
             &&
@@ -22705,7 +23072,7 @@ invalid_except_stmt_rule(Parser *p)
             &&
             (expressions_var = expressions_rule(p))  // expressions
             &&
-            (_opt_var_1 = _tmp_216_rule(p), !p->error_indicator)  // ['as' NAME]
+            (_opt_var_1 = _tmp_220_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
         )
@@ -22737,13 +23104,13 @@ invalid_except_stmt_rule(Parser *p)
         expr_ty expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_opt_var = _PyPegen_expect_token(p, 16), !p->error_indicator)  // '*'?
             &&
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var_1 = _tmp_217_rule(p), !p->error_indicator)  // ['as' NAME]
+            (_opt_var_1 = _tmp_221_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
@@ -22770,7 +23137,7 @@ invalid_except_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
@@ -22795,14 +23162,14 @@ invalid_except_stmt_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_except_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'except' '*' (NEWLINE | ':')"));
         Token * _literal;
-        void *_tmp_218_var;
+        void *_tmp_222_var;
         Token * a;
         if (
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
-            (_tmp_218_var = _tmp_218_rule(p))  // NEWLINE | ':'
+            (_tmp_222_var = _tmp_222_rule(p))  // NEWLINE | ':'
         )
         {
             D(fprintf(stderr, "%*c+ invalid_except_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'except' '*' (NEWLINE | ':')"));
@@ -22829,8 +23196,7 @@ static void *
 invalid_finally_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22848,7 +23214,7 @@ invalid_finally_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 633))  // token='finally'
+            (a = _PyPegen_expect_token(p, 649))  // token='finally'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -22883,8 +23249,7 @@ static void *
 invalid_except_stmt_indent_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22905,11 +23270,11 @@ invalid_except_stmt_indent_rule(Parser *p)
         expr_ty expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var = _tmp_219_rule(p), !p->error_indicator)  // ['as' NAME]
+            (_opt_var = _tmp_223_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -22941,7 +23306,7 @@ invalid_except_stmt_indent_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -22975,8 +23340,7 @@ static void *
 invalid_except_star_stmt_indent_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -22998,13 +23362,13 @@ invalid_except_star_stmt_indent_rule(Parser *p)
         expr_ty expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 637))  // token='except'
+            (a = _PyPegen_expect_token(p, 653))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var = _tmp_220_rule(p), !p->error_indicator)  // ['as' NAME]
+            (_opt_var = _tmp_224_rule(p), !p->error_indicator)  // ['as' NAME]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23039,8 +23403,7 @@ static void *
 invalid_match_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23126,8 +23489,7 @@ static void *
 invalid_case_block_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23219,8 +23581,7 @@ static void *
 invalid_as_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23240,7 +23601,7 @@ invalid_as_pattern_rule(Parser *p)
         if (
             (or_pattern_var = or_pattern_rule(p))  // or_pattern
             &&
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (a = _PyPegen_expect_soft_keyword(p, "_"))  // soft_keyword='"_"'
         )
@@ -23270,7 +23631,7 @@ invalid_as_pattern_rule(Parser *p)
         if (
             (or_pattern_var = or_pattern_rule(p))  // or_pattern
             &&
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             _PyPegen_lookahead_with_name(0, _PyPegen_name_token, p)
             &&
@@ -23301,8 +23662,7 @@ static void *
 invalid_class_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23352,8 +23712,7 @@ static asdl_pattern_seq*
 invalid_class_argument_pattern_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23373,7 +23732,7 @@ invalid_class_argument_pattern_rule(Parser *p)
         asdl_pattern_seq* a;
         asdl_seq* keyword_patterns_var;
         if (
-            (_opt_var = _tmp_221_rule(p), !p->error_indicator)  // [positional_patterns ',']
+            (_opt_var = _tmp_225_rule(p), !p->error_indicator)  // [positional_patterns ',']
             &&
             (keyword_patterns_var = keyword_patterns_rule(p))  // keyword_patterns
             &&
@@ -23408,8 +23767,7 @@ static void *
 invalid_if_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23427,7 +23785,7 @@ invalid_if_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -23458,7 +23816,7 @@ invalid_if_stmt_rule(Parser *p)
         expr_ty a_1;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 642))  // token='if'
+            (a = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (a_1 = named_expression_rule(p))  // named_expression
             &&
@@ -23495,8 +23853,7 @@ static void *
 invalid_elif_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23514,7 +23871,7 @@ invalid_elif_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='elif'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='elif'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -23545,7 +23902,7 @@ invalid_elif_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 644))  // token='elif'
+            (a = _PyPegen_expect_token(p, 660))  // token='elif'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -23580,8 +23937,7 @@ static void *
 invalid_else_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23599,7 +23955,7 @@ invalid_else_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 645))  // token='else'
+            (a = _PyPegen_expect_token(p, 661))  // token='else'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23634,8 +23990,7 @@ static void *
 invalid_while_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23653,7 +24008,7 @@ invalid_while_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 647))  // token='while'
+            (_keyword = _PyPegen_expect_token(p, 663))  // token='while'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -23684,7 +24039,7 @@ invalid_while_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 647))  // token='while'
+            (a = _PyPegen_expect_token(p, 663))  // token='while'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -23715,14 +24070,13 @@ invalid_while_stmt_rule(Parser *p)
 }
 
 // invalid_for_stmt:
-//     | ASYNC? 'for' star_targets 'in' star_expressions NEWLINE
-//     | ASYNC? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT
+//     | 'async'? 'for' star_targets 'in' star_expressions NEWLINE
+//     | 'async'? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT
 static void *
 invalid_for_stmt_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23730,12 +24084,12 @@ invalid_for_stmt_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // ASYNC? 'for' star_targets 'in' star_expressions NEWLINE
+    { // 'async'? 'for' star_targets 'in' star_expressions NEWLINE
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_for_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'for' star_targets 'in' star_expressions NEWLINE"));
+        D(fprintf(stderr, "%*c> invalid_for_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'for' star_targets 'in' star_expressions NEWLINE"));
         Token * _keyword;
         Token * _keyword_1;
         void *_opt_var;
@@ -23744,20 +24098,20 @@ invalid_for_stmt_rule(Parser *p)
         expr_ty star_expressions_var;
         expr_ty star_targets_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (star_targets_var = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
             &&
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_for_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'for' star_targets 'in' star_expressions NEWLINE"));
+            D(fprintf(stderr, "%*c+ invalid_for_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'for' star_targets 'in' star_expressions NEWLINE"));
             _res = RAISE_SYNTAX_ERROR ( "expected ':'" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -23768,14 +24122,14 @@ invalid_for_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_for_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'for' star_targets 'in' star_expressions NEWLINE"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'for' star_targets 'in' star_expressions NEWLINE"));
     }
-    { // ASYNC? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT
+    { // 'async'? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_for_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT"));
+        D(fprintf(stderr, "%*c> invalid_for_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT"));
         Token * _keyword;
         Token * _literal;
         void *_opt_var;
@@ -23785,13 +24139,13 @@ invalid_for_stmt_rule(Parser *p)
         expr_ty star_expressions_var;
         expr_ty star_targets_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 650))  // token='for'
+            (a = _PyPegen_expect_token(p, 668))  // token='for'
             &&
             (star_targets_var = star_targets_rule(p))  // star_targets
             &&
-            (_keyword = _PyPegen_expect_token(p, 651))  // token='in'
+            (_keyword = _PyPegen_expect_token(p, 669))  // token='in'
             &&
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
             &&
@@ -23802,7 +24156,7 @@ invalid_for_stmt_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, INDENT)  // token=INDENT
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_for_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT"));
+            D(fprintf(stderr, "%*c+ invalid_for_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT"));
             _res = RAISE_INDENTATION_ERROR ( "expected an indented block after 'for' statement on line %d" , a -> lineno );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -23813,7 +24167,7 @@ invalid_for_stmt_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_for_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'for' star_targets 'in' star_expressions ':' NEWLINE !INDENT"));
     }
     _res = NULL;
   done:
@@ -23822,13 +24176,12 @@ invalid_for_stmt_rule(Parser *p)
 }
 
 // invalid_def_raw:
-//     | ASYNC? 'def' NAME '(' params? ')' ['->' expression] ':' NEWLINE !INDENT
+//     | 'async'? 'def' NAME type_params? '(' params? ')' ['->' expression] ':' NEWLINE !INDENT
 static void *
 invalid_def_raw_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23836,12 +24189,12 @@ invalid_def_raw_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // ASYNC? 'def' NAME '(' params? ')' ['->' expression] ':' NEWLINE !INDENT
+    { // 'async'? 'def' NAME type_params? '(' params? ')' ['->' expression] ':' NEWLINE !INDENT
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC? 'def' NAME '(' params? ')' ['->' expression] ':' NEWLINE !INDENT"));
+        D(fprintf(stderr, "%*c> invalid_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'? 'def' NAME type_params? '(' params? ')' ['->' expression] ':' NEWLINE !INDENT"));
         Token * _literal;
         Token * _literal_1;
         Token * _literal_2;
@@ -23851,23 +24204,27 @@ invalid_def_raw_rule(Parser *p)
         UNUSED(_opt_var_1); // Silence compiler warnings
         void *_opt_var_2;
         UNUSED(_opt_var_2); // Silence compiler warnings
+        void *_opt_var_3;
+        UNUSED(_opt_var_3); // Silence compiler warnings
         Token * a;
         expr_ty name_var;
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, ASYNC), !p->error_indicator)  // ASYNC?
+            (_opt_var = _PyPegen_expect_token(p, 670), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 652))  // token='def'
+            (a = _PyPegen_expect_token(p, 671))  // token='def'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
+            (_opt_var_1 = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
-            (_opt_var_1 = params_rule(p), !p->error_indicator)  // params?
+            (_opt_var_2 = params_rule(p), !p->error_indicator)  // params?
             &&
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
             &&
-            (_opt_var_2 = _tmp_222_rule(p), !p->error_indicator)  // ['->' expression]
+            (_opt_var_3 = _tmp_226_rule(p), !p->error_indicator)  // ['->' expression]
             &&
             (_literal_2 = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23876,7 +24233,7 @@ invalid_def_raw_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, INDENT)  // token=INDENT
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC? 'def' NAME '(' params? ')' ['->' expression] ':' NEWLINE !INDENT"));
+            D(fprintf(stderr, "%*c+ invalid_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'def' NAME type_params? '(' params? ')' ['->' expression] ':' NEWLINE !INDENT"));
             _res = RAISE_INDENTATION_ERROR ( "expected an indented block after function definition on line %d" , a -> lineno );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -23887,7 +24244,7 @@ invalid_def_raw_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC? 'def' NAME '(' params? ')' ['->' expression] ':' NEWLINE !INDENT"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'? 'def' NAME type_params? '(' params? ')' ['->' expression] ':' NEWLINE !INDENT"));
     }
     _res = NULL;
   done:
@@ -23896,14 +24253,13 @@ invalid_def_raw_rule(Parser *p)
 }
 
 // invalid_class_def_raw:
-//     | 'class' NAME ['(' arguments? ')'] NEWLINE
-//     | 'class' NAME ['(' arguments? ')'] ':' NEWLINE !INDENT
+//     | 'class' NAME type_params? ['(' arguments? ')'] NEWLINE
+//     | 'class' NAME type_params? ['(' arguments? ')'] ':' NEWLINE !INDENT
 static void *
 invalid_class_def_raw_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -23911,28 +24267,32 @@ invalid_class_def_raw_rule(Parser *p)
     }
     void * _res = NULL;
     int _mark = p->mark;
-    { // 'class' NAME ['(' arguments? ')'] NEWLINE
+    { // 'class' NAME type_params? ['(' arguments? ')'] NEWLINE
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_class_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class' NAME ['(' arguments? ')'] NEWLINE"));
+        D(fprintf(stderr, "%*c> invalid_class_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] NEWLINE"));
         Token * _keyword;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
+        void *_opt_var_1;
+        UNUSED(_opt_var_1); // Silence compiler warnings
         expr_ty name_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 654))  // token='class'
+            (_keyword = _PyPegen_expect_token(p, 673))  // token='class'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
-            (_opt_var = _tmp_223_rule(p), !p->error_indicator)  // ['(' arguments? ')']
+            (_opt_var = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
+            (_opt_var_1 = _tmp_227_rule(p), !p->error_indicator)  // ['(' arguments? ')']
             &&
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_class_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class' NAME ['(' arguments? ')'] NEWLINE"));
+            D(fprintf(stderr, "%*c+ invalid_class_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] NEWLINE"));
             _res = RAISE_SYNTAX_ERROR ( "expected ':'" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -23943,26 +24303,30 @@ invalid_class_def_raw_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_class_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class' NAME ['(' arguments? ')'] NEWLINE"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] NEWLINE"));
     }
-    { // 'class' NAME ['(' arguments? ')'] ':' NEWLINE !INDENT
+    { // 'class' NAME type_params? ['(' arguments? ')'] ':' NEWLINE !INDENT
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> invalid_class_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class' NAME ['(' arguments? ')'] ':' NEWLINE !INDENT"));
+        D(fprintf(stderr, "%*c> invalid_class_def_raw[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] ':' NEWLINE !INDENT"));
         Token * _literal;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
+        void *_opt_var_1;
+        UNUSED(_opt_var_1); // Silence compiler warnings
         Token * a;
         expr_ty name_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 654))  // token='class'
+            (a = _PyPegen_expect_token(p, 673))  // token='class'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
-            (_opt_var = _tmp_224_rule(p), !p->error_indicator)  // ['(' arguments? ')']
+            (_opt_var = type_params_rule(p), !p->error_indicator)  // type_params?
+            &&
+            (_opt_var_1 = _tmp_228_rule(p), !p->error_indicator)  // ['(' arguments? ')']
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23971,7 +24335,7 @@ invalid_class_def_raw_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, INDENT)  // token=INDENT
         )
         {
-            D(fprintf(stderr, "%*c+ invalid_class_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class' NAME ['(' arguments? ')'] ':' NEWLINE !INDENT"));
+            D(fprintf(stderr, "%*c+ invalid_class_def_raw[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] ':' NEWLINE !INDENT"));
             _res = RAISE_INDENTATION_ERROR ( "expected an indented block after class definition on line %d" , a -> lineno );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -23982,7 +24346,7 @@ invalid_class_def_raw_rule(Parser *p)
         }
         p->mark = _mark;
         D(fprintf(stderr, "%*c%s invalid_class_def_raw[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class' NAME ['(' arguments? ')'] ':' NEWLINE !INDENT"));
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class' NAME type_params? ['(' arguments? ')'] ':' NEWLINE !INDENT"));
     }
     _res = NULL;
   done:
@@ -23998,8 +24362,7 @@ static void *
 invalid_double_starred_kvpairs_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24013,11 +24376,11 @@ invalid_double_starred_kvpairs_rule(Parser *p)
             return NULL;
         }
         D(fprintf(stderr, "%*c> invalid_double_starred_kvpairs[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.double_starred_kvpair+ ',' invalid_kvpair"));
-        asdl_seq * _gather_225_var;
+        asdl_seq * _gather_229_var;
         Token * _literal;
         void *invalid_kvpair_var;
         if (
-            (_gather_225_var = _gather_225_rule(p))  // ','.double_starred_kvpair+
+            (_gather_229_var = _gather_229_rule(p))  // ','.double_starred_kvpair+
             &&
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
@@ -24025,7 +24388,7 @@ invalid_double_starred_kvpairs_rule(Parser *p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_double_starred_kvpairs[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.double_starred_kvpair+ ',' invalid_kvpair"));
-            _res = _PyPegen_dummy_name(p, _gather_225_var, _literal, invalid_kvpair_var);
+            _res = _PyPegen_dummy_name(p, _gather_229_var, _literal, invalid_kvpair_var);
             goto done;
         }
         p->mark = _mark;
@@ -24078,7 +24441,7 @@ invalid_double_starred_kvpairs_rule(Parser *p)
             &&
             (a = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            _PyPegen_lookahead(1, _tmp_227_rule, p)
+            _PyPegen_lookahead(1, _tmp_231_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_double_starred_kvpairs[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ':' &('}' | ',')"));
@@ -24108,8 +24471,7 @@ static void *
 invalid_kvpair_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24189,7 +24551,7 @@ invalid_kvpair_rule(Parser *p)
             &&
             (a = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            _PyPegen_lookahead(1, _tmp_228_rule, p)
+            _PyPegen_lookahead(1, _tmp_232_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_kvpair[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ':' &('}' | ',')"));
@@ -24216,8 +24578,7 @@ static void *
 invalid_starred_expression_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24280,8 +24641,7 @@ static void *
 invalid_replacement_field_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24407,7 +24767,7 @@ invalid_replacement_field_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            _PyPegen_lookahead(0, _tmp_229_rule, p)
+            _PyPegen_lookahead(0, _tmp_233_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' !(yield_expr | star_expressions)"));
@@ -24430,13 +24790,13 @@ invalid_replacement_field_rule(Parser *p)
         }
         D(fprintf(stderr, "%*c> invalid_replacement_field[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) !('=' | '!' | ':' | '}')"));
         Token * _literal;
-        void *_tmp_230_var;
+        void *_tmp_234_var;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (_tmp_230_var = _tmp_230_rule(p))  // yield_expr | star_expressions
+            (_tmp_234_var = _tmp_234_rule(p))  // yield_expr | star_expressions
             &&
-            _PyPegen_lookahead(0, _tmp_231_rule, p)
+            _PyPegen_lookahead(0, _tmp_235_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) !('=' | '!' | ':' | '}')"));
@@ -24460,15 +24820,15 @@ invalid_replacement_field_rule(Parser *p)
         D(fprintf(stderr, "%*c> invalid_replacement_field[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '=' !('!' | ':' | '}')"));
         Token * _literal;
         Token * _literal_1;
-        void *_tmp_232_var;
+        void *_tmp_236_var;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (_tmp_232_var = _tmp_232_rule(p))  // yield_expr | star_expressions
+            (_tmp_236_var = _tmp_236_rule(p))  // yield_expr | star_expressions
             &&
             (_literal_1 = _PyPegen_expect_token(p, 22))  // token='='
             &&
-            _PyPegen_lookahead(0, _tmp_233_rule, p)
+            _PyPegen_lookahead(0, _tmp_237_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '=' !('!' | ':' | '}')"));
@@ -24493,12 +24853,12 @@ invalid_replacement_field_rule(Parser *p)
         Token * _literal;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
-        void *_tmp_234_var;
+        void *_tmp_238_var;
         void *invalid_conversion_character_var;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (_tmp_234_var = _tmp_234_rule(p))  // yield_expr | star_expressions
+            (_tmp_238_var = _tmp_238_rule(p))  // yield_expr | star_expressions
             &&
             (_opt_var = _PyPegen_expect_token(p, 22), !p->error_indicator)  // '='?
             &&
@@ -24506,7 +24866,7 @@ invalid_replacement_field_rule(Parser *p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '='? invalid_conversion_character"));
-            _res = _PyPegen_dummy_name(p, _literal, _tmp_234_var, _opt_var, invalid_conversion_character_var);
+            _res = _PyPegen_dummy_name(p, _literal, _tmp_238_var, _opt_var, invalid_conversion_character_var);
             goto done;
         }
         p->mark = _mark;
@@ -24524,17 +24884,17 @@ invalid_replacement_field_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         void *_opt_var_1;
         UNUSED(_opt_var_1); // Silence compiler warnings
-        void *_tmp_235_var;
+        void *_tmp_239_var;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (_tmp_235_var = _tmp_235_rule(p))  // yield_expr | star_expressions
+            (_tmp_239_var = _tmp_239_rule(p))  // yield_expr | star_expressions
             &&
             (_opt_var = _PyPegen_expect_token(p, 22), !p->error_indicator)  // '='?
             &&
-            (_opt_var_1 = _tmp_236_rule(p), !p->error_indicator)  // ['!' NAME]
+            (_opt_var_1 = _tmp_240_rule(p), !p->error_indicator)  // ['!' NAME]
             &&
-            _PyPegen_lookahead(0, _tmp_237_rule, p)
+            _PyPegen_lookahead(0, _tmp_241_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_replacement_field[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '='? ['!' NAME] !(':' | '}')"));
@@ -24558,24 +24918,24 @@ invalid_replacement_field_rule(Parser *p)
         D(fprintf(stderr, "%*c> invalid_replacement_field[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{' (yield_expr | star_expressions) '='? ['!' NAME] ':' fstring_format_spec* !'}'"));
         Token * _literal;
         Token * _literal_1;
-        asdl_seq * _loop0_240_var;
+        asdl_seq * _loop0_244_var;
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         void *_opt_var_1;
         UNUSED(_opt_var_1); // Silence compiler warnings
-        void *_tmp_238_var;
+        void *_tmp_242_var;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (_tmp_238_var = _tmp_238_rule(p))  // yield_expr | star_expressions
+            (_tmp_242_var = _tmp_242_rule(p))  // yield_expr | star_expressions
             &&
             (_opt_var = _PyPegen_expect_token(p, 22), !p->error_indicator)  // '='?
             &&
-            (_opt_var_1 = _tmp_239_rule(p), !p->error_indicator)  // ['!' NAME]
+            (_opt_var_1 = _tmp_243_rule(p), !p->error_indicator)  // ['!' NAME]
             &&
             (_literal_1 = _PyPegen_expect_token(p, 11))  // token=':'
             &&
-            (_loop0_240_var = _loop0_240_rule(p))  // fstring_format_spec*
+            (_loop0_244_var = _loop0_244_rule(p))  // fstring_format_spec*
             &&
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 26)  // token='}'
         )
@@ -24604,15 +24964,15 @@ invalid_replacement_field_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         void *_opt_var_1;
         UNUSED(_opt_var_1); // Silence compiler warnings
-        void *_tmp_241_var;
+        void *_tmp_245_var;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
             &&
-            (_tmp_241_var = _tmp_241_rule(p))  // yield_expr | star_expressions
+            (_tmp_245_var = _tmp_245_rule(p))  // yield_expr | star_expressions
             &&
             (_opt_var = _PyPegen_expect_token(p, 22), !p->error_indicator)  // '='?
             &&
-            (_opt_var_1 = _tmp_242_rule(p), !p->error_indicator)  // ['!' NAME]
+            (_opt_var_1 = _tmp_246_rule(p), !p->error_indicator)  // ['!' NAME]
             &&
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 26)  // token='}'
         )
@@ -24641,8 +25001,7 @@ static void *
 invalid_conversion_character_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24660,7 +25019,7 @@ invalid_conversion_character_rule(Parser *p)
         if (
             (_literal = _PyPegen_expect_token(p, 54))  // token='!'
             &&
-            _PyPegen_lookahead(1, _tmp_243_rule, p)
+            _PyPegen_lookahead(1, _tmp_247_rule, p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_conversion_character[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' &(':' | '}')"));
@@ -24713,8 +25072,7 @@ static asdl_seq *
 _loop0_1_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24781,8 +25139,7 @@ static asdl_seq *
 _loop0_2_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24844,81 +25201,12 @@ _loop0_2_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_3: fstring_middle
+// _loop1_3: statement
 static asdl_seq *
-_loop0_3_rule(Parser *p)
+_loop1_3_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-    }
-    if (p->error_indicator) {
-        p->level--;
-        return NULL;
-    }
-    void *_res = NULL;
-    int _mark = p->mark;
-    void **_children = PyMem_Malloc(sizeof(void *));
-    if (!_children) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-        p->level--;
-        return NULL;
-    }
-    Py_ssize_t _children_capacity = 1;
-    Py_ssize_t _n = 0;
-    { // fstring_middle
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> _loop0_3[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_middle"));
-        expr_ty fstring_middle_var;
-        while (
-            (fstring_middle_var = fstring_middle_rule(p))  // fstring_middle
-        )
-        {
-            _res = fstring_middle_var;
-            if (_n == _children_capacity) {
-                _children_capacity *= 2;
-                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
-                if (!_new_children) {
-                    PyMem_Free(_children);
-                    p->error_indicator = 1;
-                    PyErr_NoMemory();
-                    p->level--;
-                    return NULL;
-                }
-                _children = _new_children;
-            }
-            _children[_n++] = _res;
-            _mark = p->mark;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_3[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "fstring_middle"));
-    }
-    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
-    if (!_seq) {
-        PyMem_Free(_children);
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-        p->level--;
-        return NULL;
-    }
-    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
-    PyMem_Free(_children);
-    p->level--;
-    return _seq;
-}
-
-// _loop1_4: statement
-static asdl_seq *
-_loop1_4_rule(Parser *p)
-{
-    if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -24940,7 +25228,7 @@ _loop1_4_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_4[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "statement"));
+        D(fprintf(stderr, "%*c> _loop1_3[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "statement"));
         asdl_stmt_seq* statement_var;
         while (
             (statement_var = statement_rule(p))  // statement
@@ -24963,7 +25251,7 @@ _loop1_4_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_4[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_3[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "statement"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -24985,13 +25273,12 @@ _loop1_4_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_6: ';' simple_stmt
+// _loop0_5: ';' simple_stmt
 static asdl_seq *
-_loop0_6_rule(Parser *p)
+_loop0_5_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25013,7 +25300,7 @@ _loop0_6_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_6[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "';' simple_stmt"));
+        D(fprintf(stderr, "%*c> _loop0_5[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "';' simple_stmt"));
         Token * _literal;
         stmt_ty elem;
         while (
@@ -25045,7 +25332,7 @@ _loop0_6_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_6[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_5[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "';' simple_stmt"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -25062,13 +25349,12 @@ _loop0_6_rule(Parser *p)
     return _seq;
 }
 
-// _gather_5: simple_stmt _loop0_6
+// _gather_4: simple_stmt _loop0_5
 static asdl_seq *
-_gather_5_rule(Parser *p)
+_gather_4_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25076,27 +25362,27 @@ _gather_5_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // simple_stmt _loop0_6
+    { // simple_stmt _loop0_5
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_5[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "simple_stmt _loop0_6"));
+        D(fprintf(stderr, "%*c> _gather_4[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "simple_stmt _loop0_5"));
         stmt_ty elem;
         asdl_seq * seq;
         if (
             (elem = simple_stmt_rule(p))  // simple_stmt
             &&
-            (seq = _loop0_6_rule(p))  // _loop0_6
+            (seq = _loop0_5_rule(p))  // _loop0_5
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_5[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "simple_stmt _loop0_6"));
+            D(fprintf(stderr, "%*c+ _gather_4[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "simple_stmt _loop0_5"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_5[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "simple_stmt _loop0_6"));
+        D(fprintf(stderr, "%*c%s _gather_4[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "simple_stmt _loop0_5"));
     }
     _res = NULL;
   done:
@@ -25104,13 +25390,12 @@ _gather_5_rule(Parser *p)
     return _res;
 }
 
-// _tmp_7: 'import' | 'from'
+// _tmp_6: 'import' | 'from'
 static void *
-_tmp_7_rule(Parser *p)
+_tmp_6_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25123,18 +25408,18 @@ _tmp_7_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'import'"));
+        D(fprintf(stderr, "%*c> _tmp_6[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'import'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 607))  // token='import'
+            (_keyword = _PyPegen_expect_token(p, 617))  // token='import'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'import'"));
+            D(fprintf(stderr, "%*c+ _tmp_6[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'import'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_7[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_6[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'import'"));
     }
     { // 'from'
@@ -25142,18 +25427,18 @@ _tmp_7_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'from'"));
+        D(fprintf(stderr, "%*c> _tmp_6[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'from'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 608))  // token='from'
+            (_keyword = _PyPegen_expect_token(p, 618))  // token='from'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'from'"));
+            D(fprintf(stderr, "%*c+ _tmp_6[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'from'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_7[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_6[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'from'"));
     }
     _res = NULL;
@@ -25162,13 +25447,12 @@ _tmp_7_rule(Parser *p)
     return _res;
 }
 
-// _tmp_8: 'def' | '@' | ASYNC
+// _tmp_7: 'def' | '@' | 'async'
 static void *
-_tmp_8_rule(Parser *p)
+_tmp_7_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25181,18 +25465,18 @@ _tmp_8_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_8[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'def'"));
+        D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'def'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 652))  // token='def'
+            (_keyword = _PyPegen_expect_token(p, 671))  // token='def'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_8[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'def'"));
+            D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'def'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_8[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_7[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'def'"));
     }
     { // '@'
@@ -25200,38 +25484,38 @@ _tmp_8_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_8[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'@'"));
+        D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'@'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 49))  // token='@'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_8[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'@'"));
+            D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'@'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_8[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_7[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'@'"));
     }
-    { // ASYNC
+    { // 'async'
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_8[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC"));
-        Token * async_var;
+        D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'"));
+        Token * _keyword;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_8[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC"));
-            _res = async_var;
+            D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'"));
+            _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_8[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC"));
+        D(fprintf(stderr, "%*c%s _tmp_7[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'"));
     }
     _res = NULL;
   done:
@@ -25239,13 +25523,12 @@ _tmp_8_rule(Parser *p)
     return _res;
 }
 
-// _tmp_9: 'class' | '@'
+// _tmp_8: 'class' | '@'
 static void *
-_tmp_9_rule(Parser *p)
+_tmp_8_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25258,18 +25541,18 @@ _tmp_9_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_9[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class'"));
+        D(fprintf(stderr, "%*c> _tmp_8[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 654))  // token='class'
+            (_keyword = _PyPegen_expect_token(p, 673))  // token='class'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_9[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class'"));
+            D(fprintf(stderr, "%*c+ _tmp_8[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_9[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_8[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'class'"));
     }
     { // '@'
@@ -25277,18 +25560,18 @@ _tmp_9_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_9[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'@'"));
+        D(fprintf(stderr, "%*c> _tmp_8[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'@'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 49))  // token='@'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_9[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'@'"));
+            D(fprintf(stderr, "%*c+ _tmp_8[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'@'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_9[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_8[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'@'"));
     }
     _res = NULL;
@@ -25297,13 +25580,12 @@ _tmp_9_rule(Parser *p)
     return _res;
 }
 
-// _tmp_10: 'with' | ASYNC
+// _tmp_9: 'with' | 'async'
 static void *
-_tmp_10_rule(Parser *p)
+_tmp_9_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25316,38 +25598,38 @@ _tmp_10_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_10[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'with'"));
+        D(fprintf(stderr, "%*c> _tmp_9[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'with'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 615))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 631))  // token='with'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_10[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'with'"));
+            D(fprintf(stderr, "%*c+ _tmp_9[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'with'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_10[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_9[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'with'"));
     }
-    { // ASYNC
+    { // 'async'
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_10[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC"));
-        Token * async_var;
+        D(fprintf(stderr, "%*c> _tmp_9[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'"));
+        Token * _keyword;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_10[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC"));
-            _res = async_var;
+            D(fprintf(stderr, "%*c+ _tmp_9[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'"));
+            _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_10[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC"));
+        D(fprintf(stderr, "%*c%s _tmp_9[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'"));
     }
     _res = NULL;
   done:
@@ -25355,13 +25637,12 @@ _tmp_10_rule(Parser *p)
     return _res;
 }
 
-// _tmp_11: 'for' | ASYNC
+// _tmp_10: 'for' | 'async'
 static void *
-_tmp_11_rule(Parser *p)
+_tmp_10_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25374,38 +25655,38 @@ _tmp_11_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_11[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'for'"));
+        D(fprintf(stderr, "%*c> _tmp_10[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'for'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 650))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 668))  // token='for'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_11[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'for'"));
+            D(fprintf(stderr, "%*c+ _tmp_10[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'for'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_11[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_10[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'for'"));
     }
-    { // ASYNC
+    { // 'async'
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_11[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "ASYNC"));
-        Token * async_var;
+        D(fprintf(stderr, "%*c> _tmp_10[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'"));
+        Token * _keyword;
         if (
-            (async_var = _PyPegen_expect_token(p, ASYNC))  // token='ASYNC'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='async'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_11[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "ASYNC"));
-            _res = async_var;
+            D(fprintf(stderr, "%*c+ _tmp_10[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'"));
+            _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_11[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "ASYNC"));
+        D(fprintf(stderr, "%*c%s _tmp_10[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'async'"));
     }
     _res = NULL;
   done:
@@ -25413,13 +25694,12 @@ _tmp_11_rule(Parser *p)
     return _res;
 }
 
-// _tmp_12: '=' annotated_rhs
+// _tmp_11: '=' annotated_rhs
 static void *
-_tmp_12_rule(Parser *p)
+_tmp_11_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25432,7 +25712,7 @@ _tmp_12_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_12[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
+        D(fprintf(stderr, "%*c> _tmp_11[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
         Token * _literal;
         expr_ty d;
         if (
@@ -25441,7 +25721,7 @@ _tmp_12_rule(Parser *p)
             (d = annotated_rhs_rule(p))  // annotated_rhs
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_12[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
+            D(fprintf(stderr, "%*c+ _tmp_11[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
             _res = d;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -25451,7 +25731,7 @@ _tmp_12_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_12[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_11[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'=' annotated_rhs"));
     }
     _res = NULL;
@@ -25460,13 +25740,12 @@ _tmp_12_rule(Parser *p)
     return _res;
 }
 
-// _tmp_13: '(' single_target ')' | single_subscript_attribute_target
+// _tmp_12: '(' single_target ')' | single_subscript_attribute_target
 static void *
-_tmp_13_rule(Parser *p)
+_tmp_12_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25479,7 +25758,7 @@ _tmp_13_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_13[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' single_target ')'"));
+        D(fprintf(stderr, "%*c> _tmp_12[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' single_target ')'"));
         Token * _literal;
         Token * _literal_1;
         expr_ty b;
@@ -25491,7 +25770,7 @@ _tmp_13_rule(Parser *p)
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_13[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' single_target ')'"));
+            D(fprintf(stderr, "%*c+ _tmp_12[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' single_target ')'"));
             _res = b;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -25501,7 +25780,7 @@ _tmp_13_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_13[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_12[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'(' single_target ')'"));
     }
     { // single_subscript_attribute_target
@@ -25509,18 +25788,18 @@ _tmp_13_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_13[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "single_subscript_attribute_target"));
+        D(fprintf(stderr, "%*c> _tmp_12[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "single_subscript_attribute_target"));
         expr_ty single_subscript_attribute_target_var;
         if (
             (single_subscript_attribute_target_var = single_subscript_attribute_target_rule(p))  // single_subscript_attribute_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_13[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "single_subscript_attribute_target"));
+            D(fprintf(stderr, "%*c+ _tmp_12[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "single_subscript_attribute_target"));
             _res = single_subscript_attribute_target_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_13[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_12[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "single_subscript_attribute_target"));
     }
     _res = NULL;
@@ -25529,13 +25808,12 @@ _tmp_13_rule(Parser *p)
     return _res;
 }
 
-// _tmp_14: '=' annotated_rhs
+// _tmp_13: '=' annotated_rhs
 static void *
-_tmp_14_rule(Parser *p)
+_tmp_13_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25548,7 +25826,7 @@ _tmp_14_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_14[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
+        D(fprintf(stderr, "%*c> _tmp_13[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
         Token * _literal;
         expr_ty d;
         if (
@@ -25557,7 +25835,7 @@ _tmp_14_rule(Parser *p)
             (d = annotated_rhs_rule(p))  // annotated_rhs
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_14[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
+            D(fprintf(stderr, "%*c+ _tmp_13[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'=' annotated_rhs"));
             _res = d;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -25567,7 +25845,7 @@ _tmp_14_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_14[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_13[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'=' annotated_rhs"));
     }
     _res = NULL;
@@ -25576,13 +25854,12 @@ _tmp_14_rule(Parser *p)
     return _res;
 }
 
-// _loop1_15: (star_targets '=')
+// _loop1_14: (star_targets '=')
 static asdl_seq *
-_loop1_15_rule(Parser *p)
+_loop1_14_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25604,13 +25881,13 @@ _loop1_15_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_15[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(star_targets '=')"));
-        void *_tmp_244_var;
+        D(fprintf(stderr, "%*c> _loop1_14[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(star_targets '=')"));
+        void *_tmp_248_var;
         while (
-            (_tmp_244_var = _tmp_244_rule(p))  // star_targets '='
+            (_tmp_248_var = _tmp_248_rule(p))  // star_targets '='
         )
         {
-            _res = _tmp_244_var;
+            _res = _tmp_248_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -25627,7 +25904,7 @@ _loop1_15_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_15[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_14[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(star_targets '=')"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -25649,13 +25926,12 @@ _loop1_15_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_16: yield_expr | star_expressions
+// _tmp_15: yield_expr | star_expressions
 static void *
-_tmp_16_rule(Parser *p)
+_tmp_15_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25668,18 +25944,18 @@ _tmp_16_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_16[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_15[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_16[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_15[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_16[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_15[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -25687,18 +25963,18 @@ _tmp_16_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_16[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_15[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_16[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_15[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_16[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_15[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -25707,13 +25983,12 @@ _tmp_16_rule(Parser *p)
     return _res;
 }
 
-// _tmp_17: yield_expr | star_expressions
+// _tmp_16: yield_expr | star_expressions
 static void *
-_tmp_17_rule(Parser *p)
+_tmp_16_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25726,18 +26001,18 @@ _tmp_17_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_17[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_16[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_17[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_16[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_17[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_16[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -25745,18 +26020,18 @@ _tmp_17_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_17[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_16[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_17[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_16[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_17[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_16[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -25765,13 +26040,12 @@ _tmp_17_rule(Parser *p)
     return _res;
 }
 
-// _tmp_18: 'from' expression
+// _tmp_17: 'from' expression
 static void *
-_tmp_18_rule(Parser *p)
+_tmp_17_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25784,16 +26058,16 @@ _tmp_18_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_18[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'from' expression"));
+        D(fprintf(stderr, "%*c> _tmp_17[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'from' expression"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 608))  // token='from'
+            (_keyword = _PyPegen_expect_token(p, 618))  // token='from'
             &&
             (z = expression_rule(p))  // expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_18[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'from' expression"));
+            D(fprintf(stderr, "%*c+ _tmp_17[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'from' expression"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -25803,7 +26077,7 @@ _tmp_18_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_18[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_17[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'from' expression"));
     }
     _res = NULL;
@@ -25812,132 +26086,12 @@ _tmp_18_rule(Parser *p)
     return _res;
 }
 
-// _loop0_20: ',' NAME
-static asdl_seq *
-_loop0_20_rule(Parser *p)
-{
-    if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-    }
-    if (p->error_indicator) {
-        p->level--;
-        return NULL;
-    }
-    void *_res = NULL;
-    int _mark = p->mark;
-    void **_children = PyMem_Malloc(sizeof(void *));
-    if (!_children) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-        p->level--;
-        return NULL;
-    }
-    Py_ssize_t _children_capacity = 1;
-    Py_ssize_t _n = 0;
-    { // ',' NAME
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> _loop0_20[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' NAME"));
-        Token * _literal;
-        expr_ty elem;
-        while (
-            (_literal = _PyPegen_expect_token(p, 12))  // token=','
-            &&
-            (elem = _PyPegen_name_token(p))  // NAME
-        )
-        {
-            _res = elem;
-            if (_res == NULL && PyErr_Occurred()) {
-                p->error_indicator = 1;
-                PyMem_Free(_children);
-                p->level--;
-                return NULL;
-            }
-            if (_n == _children_capacity) {
-                _children_capacity *= 2;
-                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
-                if (!_new_children) {
-                    PyMem_Free(_children);
-                    p->error_indicator = 1;
-                    PyErr_NoMemory();
-                    p->level--;
-                    return NULL;
-                }
-                _children = _new_children;
-            }
-            _children[_n++] = _res;
-            _mark = p->mark;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_20[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' NAME"));
-    }
-    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
-    if (!_seq) {
-        PyMem_Free(_children);
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-        p->level--;
-        return NULL;
-    }
-    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
-    PyMem_Free(_children);
-    p->level--;
-    return _seq;
-}
-
-// _gather_19: NAME _loop0_20
-static asdl_seq *
-_gather_19_rule(Parser *p)
-{
-    if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-    }
-    if (p->error_indicator) {
-        p->level--;
-        return NULL;
-    }
-    asdl_seq * _res = NULL;
-    int _mark = p->mark;
-    { // NAME _loop0_20
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> _gather_19[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME _loop0_20"));
-        expr_ty elem;
-        asdl_seq * seq;
-        if (
-            (elem = _PyPegen_name_token(p))  // NAME
-            &&
-            (seq = _loop0_20_rule(p))  // _loop0_20
-        )
-        {
-            D(fprintf(stderr, "%*c+ _gather_19[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME _loop0_20"));
-            _res = _PyPegen_seq_insert_in_front(p, elem, seq);
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_19[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME _loop0_20"));
-    }
-    _res = NULL;
-  done:
-    p->level--;
-    return _res;
-}
-
-// _loop0_22: ',' NAME
+// _loop0_19: ',' NAME
 static asdl_seq *
-_loop0_22_rule(Parser *p)
+_loop0_19_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -25959,7 +26113,7 @@ _loop0_22_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_22[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' NAME"));
+        D(fprintf(stderr, "%*c> _loop0_19[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' NAME"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -25991,7 +26145,7 @@ _loop0_22_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_22[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_19[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' NAME"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -26008,13 +26162,129 @@ _loop0_22_rule(Parser *p)
     return _seq;
 }
 
-// _gather_21: NAME _loop0_22
+// _gather_18: NAME _loop0_19
 static asdl_seq *
-_gather_21_rule(Parser *p)
+_gather_18_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    asdl_seq * _res = NULL;
+    int _mark = p->mark;
+    { // NAME _loop0_19
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _gather_18[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME _loop0_19"));
+        expr_ty elem;
+        asdl_seq * seq;
+        if (
+            (elem = _PyPegen_name_token(p))  // NAME
+            &&
+            (seq = _loop0_19_rule(p))  // _loop0_19
+        )
+        {
+            D(fprintf(stderr, "%*c+ _gather_18[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME _loop0_19"));
+            _res = _PyPegen_seq_insert_in_front(p, elem, seq);
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _gather_18[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME _loop0_19"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _loop0_21: ',' NAME
+static asdl_seq *
+_loop0_21_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void *_res = NULL;
+    int _mark = p->mark;
+    void **_children = PyMem_Malloc(sizeof(void *));
+    if (!_children) {
         p->error_indicator = 1;
         PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    Py_ssize_t _children_capacity = 1;
+    Py_ssize_t _n = 0;
+    { // ',' NAME
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _loop0_21[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' NAME"));
+        Token * _literal;
+        expr_ty elem;
+        while (
+            (_literal = _PyPegen_expect_token(p, 12))  // token=','
+            &&
+            (elem = _PyPegen_name_token(p))  // NAME
+        )
+        {
+            _res = elem;
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                PyMem_Free(_children);
+                p->level--;
+                return NULL;
+            }
+            if (_n == _children_capacity) {
+                _children_capacity *= 2;
+                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
+                if (!_new_children) {
+                    PyMem_Free(_children);
+                    p->error_indicator = 1;
+                    PyErr_NoMemory();
+                    p->level--;
+                    return NULL;
+                }
+                _children = _new_children;
+            }
+            _children[_n++] = _res;
+            _mark = p->mark;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _loop0_21[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' NAME"));
+    }
+    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
+    if (!_seq) {
+        PyMem_Free(_children);
+        p->error_indicator = 1;
+        PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
+    PyMem_Free(_children);
+    p->level--;
+    return _seq;
+}
+
+// _gather_20: NAME _loop0_21
+static asdl_seq *
+_gather_20_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26022,27 +26292,27 @@ _gather_21_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // NAME _loop0_22
+    { // NAME _loop0_21
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_21[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME _loop0_22"));
+        D(fprintf(stderr, "%*c> _gather_20[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME _loop0_21"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = _PyPegen_name_token(p))  // NAME
             &&
-            (seq = _loop0_22_rule(p))  // _loop0_22
+            (seq = _loop0_21_rule(p))  // _loop0_21
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_21[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME _loop0_22"));
+            D(fprintf(stderr, "%*c+ _gather_20[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME _loop0_21"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_21[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME _loop0_22"));
+        D(fprintf(stderr, "%*c%s _gather_20[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME _loop0_21"));
     }
     _res = NULL;
   done:
@@ -26050,13 +26320,12 @@ _gather_21_rule(Parser *p)
     return _res;
 }
 
-// _tmp_23: ';' | NEWLINE
+// _tmp_22: ';' | NEWLINE
 static void *
-_tmp_23_rule(Parser *p)
+_tmp_22_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26069,18 +26338,18 @@ _tmp_23_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_23[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "';'"));
+        D(fprintf(stderr, "%*c> _tmp_22[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "';'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 13))  // token=';'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_23[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "';'"));
+            D(fprintf(stderr, "%*c+ _tmp_22[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "';'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_23[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_22[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "';'"));
     }
     { // NEWLINE
@@ -26088,18 +26357,18 @@ _tmp_23_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_23[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
+        D(fprintf(stderr, "%*c> _tmp_22[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
         Token * newline_var;
         if (
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_23[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
+            D(fprintf(stderr, "%*c+ _tmp_22[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
             _res = newline_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_23[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_22[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NEWLINE"));
     }
     _res = NULL;
@@ -26108,13 +26377,12 @@ _tmp_23_rule(Parser *p)
     return _res;
 }
 
-// _tmp_24: ',' expression
+// _tmp_23: ',' expression
 static void *
-_tmp_24_rule(Parser *p)
+_tmp_23_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26127,7 +26395,7 @@ _tmp_24_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_24[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
+        D(fprintf(stderr, "%*c> _tmp_23[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
         Token * _literal;
         expr_ty z;
         if (
@@ -26136,7 +26404,7 @@ _tmp_24_rule(Parser *p)
             (z = expression_rule(p))  // expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_24[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' expression"));
+            D(fprintf(stderr, "%*c+ _tmp_23[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' expression"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -26146,7 +26414,7 @@ _tmp_24_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_24[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_23[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' expression"));
     }
     _res = NULL;
@@ -26155,13 +26423,12 @@ _tmp_24_rule(Parser *p)
     return _res;
 }
 
-// _loop0_25: ('.' | '...')
+// _loop0_24: ('.' | '...')
 static asdl_seq *
-_loop0_25_rule(Parser *p)
+_loop0_24_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26183,13 +26450,13 @@ _loop0_25_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_25[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('.' | '...')"));
-        void *_tmp_245_var;
+        D(fprintf(stderr, "%*c> _loop0_24[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('.' | '...')"));
+        void *_tmp_249_var;
         while (
-            (_tmp_245_var = _tmp_245_rule(p))  // '.' | '...'
+            (_tmp_249_var = _tmp_249_rule(p))  // '.' | '...'
         )
         {
-            _res = _tmp_245_var;
+            _res = _tmp_249_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -26206,7 +26473,7 @@ _loop0_25_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_25[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_24[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('.' | '...')"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -26223,13 +26490,12 @@ _loop0_25_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_26: ('.' | '...')
+// _loop1_25: ('.' | '...')
 static asdl_seq *
-_loop1_26_rule(Parser *p)
+_loop1_25_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26251,13 +26517,13 @@ _loop1_26_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_26[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('.' | '...')"));
-        void *_tmp_246_var;
+        D(fprintf(stderr, "%*c> _loop1_25[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('.' | '...')"));
+        void *_tmp_250_var;
         while (
-            (_tmp_246_var = _tmp_246_rule(p))  // '.' | '...'
+            (_tmp_250_var = _tmp_250_rule(p))  // '.' | '...'
         )
         {
-            _res = _tmp_246_var;
+            _res = _tmp_250_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -26274,7 +26540,7 @@ _loop1_26_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_26[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_25[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('.' | '...')"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -26296,13 +26562,12 @@ _loop1_26_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_28: ',' import_from_as_name
+// _loop0_27: ',' import_from_as_name
 static asdl_seq *
-_loop0_28_rule(Parser *p)
+_loop0_27_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26324,7 +26589,7 @@ _loop0_28_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_28[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' import_from_as_name"));
+        D(fprintf(stderr, "%*c> _loop0_27[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' import_from_as_name"));
         Token * _literal;
         alias_ty elem;
         while (
@@ -26356,7 +26621,7 @@ _loop0_28_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_28[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_27[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' import_from_as_name"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -26373,13 +26638,12 @@ _loop0_28_rule(Parser *p)
     return _seq;
 }
 
-// _gather_27: import_from_as_name _loop0_28
+// _gather_26: import_from_as_name _loop0_27
 static asdl_seq *
-_gather_27_rule(Parser *p)
+_gather_26_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26387,27 +26651,27 @@ _gather_27_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // import_from_as_name _loop0_28
+    { // import_from_as_name _loop0_27
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_27[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "import_from_as_name _loop0_28"));
+        D(fprintf(stderr, "%*c> _gather_26[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "import_from_as_name _loop0_27"));
         alias_ty elem;
         asdl_seq * seq;
         if (
             (elem = import_from_as_name_rule(p))  // import_from_as_name
             &&
-            (seq = _loop0_28_rule(p))  // _loop0_28
+            (seq = _loop0_27_rule(p))  // _loop0_27
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_27[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "import_from_as_name _loop0_28"));
+            D(fprintf(stderr, "%*c+ _gather_26[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "import_from_as_name _loop0_27"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_27[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "import_from_as_name _loop0_28"));
+        D(fprintf(stderr, "%*c%s _gather_26[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "import_from_as_name _loop0_27"));
     }
     _res = NULL;
   done:
@@ -26415,13 +26679,12 @@ _gather_27_rule(Parser *p)
     return _res;
 }
 
-// _tmp_29: 'as' NAME
+// _tmp_28: 'as' NAME
 static void *
-_tmp_29_rule(Parser *p)
+_tmp_28_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26434,16 +26697,16 @@ _tmp_29_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_29[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_28[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_29[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_28[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -26453,7 +26716,7 @@ _tmp_29_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_29[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_28[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -26462,13 +26725,12 @@ _tmp_29_rule(Parser *p)
     return _res;
 }
 
-// _loop0_31: ',' dotted_as_name
+// _loop0_30: ',' dotted_as_name
 static asdl_seq *
-_loop0_31_rule(Parser *p)
+_loop0_30_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26490,7 +26752,7 @@ _loop0_31_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_31[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' dotted_as_name"));
+        D(fprintf(stderr, "%*c> _loop0_30[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' dotted_as_name"));
         Token * _literal;
         alias_ty elem;
         while (
@@ -26522,7 +26784,7 @@ _loop0_31_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_31[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_30[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' dotted_as_name"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -26539,13 +26801,12 @@ _loop0_31_rule(Parser *p)
     return _seq;
 }
 
-// _gather_30: dotted_as_name _loop0_31
+// _gather_29: dotted_as_name _loop0_30
 static asdl_seq *
-_gather_30_rule(Parser *p)
+_gather_29_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26553,27 +26814,27 @@ _gather_30_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // dotted_as_name _loop0_31
+    { // dotted_as_name _loop0_30
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_30[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dotted_as_name _loop0_31"));
+        D(fprintf(stderr, "%*c> _gather_29[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dotted_as_name _loop0_30"));
         alias_ty elem;
         asdl_seq * seq;
         if (
             (elem = dotted_as_name_rule(p))  // dotted_as_name
             &&
-            (seq = _loop0_31_rule(p))  // _loop0_31
+            (seq = _loop0_30_rule(p))  // _loop0_30
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_30[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dotted_as_name _loop0_31"));
+            D(fprintf(stderr, "%*c+ _gather_29[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dotted_as_name _loop0_30"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_30[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "dotted_as_name _loop0_31"));
+        D(fprintf(stderr, "%*c%s _gather_29[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "dotted_as_name _loop0_30"));
     }
     _res = NULL;
   done:
@@ -26581,13 +26842,12 @@ _gather_30_rule(Parser *p)
     return _res;
 }
 
-// _tmp_32: 'as' NAME
+// _tmp_31: 'as' NAME
 static void *
-_tmp_32_rule(Parser *p)
+_tmp_31_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26600,16 +26860,16 @@ _tmp_32_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_32[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_31[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_32[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_31[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -26619,7 +26879,7 @@ _tmp_32_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_32[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_31[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -26628,13 +26888,12 @@ _tmp_32_rule(Parser *p)
     return _res;
 }
 
-// _loop1_33: ('@' named_expression NEWLINE)
+// _loop1_32: ('@' named_expression NEWLINE)
 static asdl_seq *
-_loop1_33_rule(Parser *p)
+_loop1_32_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26656,13 +26915,13 @@ _loop1_33_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_33[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('@' named_expression NEWLINE)"));
-        void *_tmp_247_var;
+        D(fprintf(stderr, "%*c> _loop1_32[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('@' named_expression NEWLINE)"));
+        void *_tmp_251_var;
         while (
-            (_tmp_247_var = _tmp_247_rule(p))  // '@' named_expression NEWLINE
+            (_tmp_251_var = _tmp_251_rule(p))  // '@' named_expression NEWLINE
         )
         {
-            _res = _tmp_247_var;
+            _res = _tmp_251_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -26679,7 +26938,7 @@ _loop1_33_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_33[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_32[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('@' named_expression NEWLINE)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -26701,13 +26960,12 @@ _loop1_33_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_34: '(' arguments? ')'
+// _tmp_33: '(' arguments? ')'
 static void *
-_tmp_34_rule(Parser *p)
+_tmp_33_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26720,7 +26978,7 @@ _tmp_34_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_34[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
+        D(fprintf(stderr, "%*c> _tmp_33[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
         Token * _literal;
         Token * _literal_1;
         void *z;
@@ -26732,7 +26990,7 @@ _tmp_34_rule(Parser *p)
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_34[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
+            D(fprintf(stderr, "%*c+ _tmp_33[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -26742,7 +27000,7 @@ _tmp_34_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_34[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_33[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'(' arguments? ')'"));
     }
     _res = NULL;
@@ -26751,13 +27009,12 @@ _tmp_34_rule(Parser *p)
     return _res;
 }
 
-// _tmp_35: '->' expression
+// _tmp_34: '->' expression
 static void *
-_tmp_35_rule(Parser *p)
+_tmp_34_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26770,7 +27027,7 @@ _tmp_35_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_35[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'->' expression"));
+        D(fprintf(stderr, "%*c> _tmp_34[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'->' expression"));
         Token * _literal;
         expr_ty z;
         if (
@@ -26779,7 +27036,7 @@ _tmp_35_rule(Parser *p)
             (z = expression_rule(p))  // expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_35[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'->' expression"));
+            D(fprintf(stderr, "%*c+ _tmp_34[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'->' expression"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -26789,7 +27046,7 @@ _tmp_35_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_35[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_34[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'->' expression"));
     }
     _res = NULL;
@@ -26798,13 +27055,12 @@ _tmp_35_rule(Parser *p)
     return _res;
 }
 
-// _tmp_36: '->' expression
+// _tmp_35: '->' expression
 static void *
-_tmp_36_rule(Parser *p)
+_tmp_35_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26817,7 +27073,7 @@ _tmp_36_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_36[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'->' expression"));
+        D(fprintf(stderr, "%*c> _tmp_35[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'->' expression"));
         Token * _literal;
         expr_ty z;
         if (
@@ -26826,7 +27082,7 @@ _tmp_36_rule(Parser *p)
             (z = expression_rule(p))  // expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_36[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'->' expression"));
+            D(fprintf(stderr, "%*c+ _tmp_35[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'->' expression"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -26836,7 +27092,7 @@ _tmp_36_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_36[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_35[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'->' expression"));
     }
     _res = NULL;
@@ -26845,13 +27101,12 @@ _tmp_36_rule(Parser *p)
     return _res;
 }
 
-// _loop0_37: param_no_default
+// _loop0_36: param_no_default
 static asdl_seq *
-_loop0_37_rule(Parser *p)
+_loop0_36_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26873,7 +27128,7 @@ _loop0_37_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_37[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_36[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -26896,7 +27151,7 @@ _loop0_37_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_37[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_36[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -26913,13 +27168,12 @@ _loop0_37_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_38: param_with_default
+// _loop0_37: param_with_default
 static asdl_seq *
-_loop0_38_rule(Parser *p)
+_loop0_37_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -26941,7 +27195,7 @@ _loop0_38_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_38[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop0_37[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -26964,7 +27218,7 @@ _loop0_38_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_38[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_37[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -26981,13 +27235,12 @@ _loop0_38_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_39: param_with_default
+// _loop0_38: param_with_default
 static asdl_seq *
-_loop0_39_rule(Parser *p)
+_loop0_38_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27009,7 +27262,7 @@ _loop0_39_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_39[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop0_38[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -27032,7 +27285,7 @@ _loop0_39_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_39[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_38[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27049,13 +27302,12 @@ _loop0_39_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_40: param_no_default
+// _loop1_39: param_no_default
 static asdl_seq *
-_loop1_40_rule(Parser *p)
+_loop1_39_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27077,7 +27329,7 @@ _loop1_40_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_40[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_39[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -27100,7 +27352,7 @@ _loop1_40_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_40[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_39[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27122,13 +27374,12 @@ _loop1_40_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_41: param_with_default
+// _loop0_40: param_with_default
 static asdl_seq *
-_loop0_41_rule(Parser *p)
+_loop0_40_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27150,7 +27401,7 @@ _loop0_41_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_41[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop0_40[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -27173,7 +27424,7 @@ _loop0_41_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_41[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_40[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27190,13 +27441,12 @@ _loop0_41_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_42: param_with_default
+// _loop1_41: param_with_default
 static asdl_seq *
-_loop1_42_rule(Parser *p)
+_loop1_41_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27218,7 +27468,7 @@ _loop1_42_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_42[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_41[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -27241,7 +27491,7 @@ _loop1_42_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_42[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_41[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27263,13 +27513,12 @@ _loop1_42_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_43: param_no_default
+// _loop1_42: param_no_default
 static asdl_seq *
-_loop1_43_rule(Parser *p)
+_loop1_42_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27291,7 +27540,7 @@ _loop1_43_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_43[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_42[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -27314,7 +27563,7 @@ _loop1_43_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_43[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_42[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27336,13 +27585,12 @@ _loop1_43_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_44: param_no_default
+// _loop1_43: param_no_default
 static asdl_seq *
-_loop1_44_rule(Parser *p)
+_loop1_43_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27364,7 +27612,7 @@ _loop1_44_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_44[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_43[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -27387,7 +27635,7 @@ _loop1_44_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_44[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_43[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27409,13 +27657,12 @@ _loop1_44_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_45: param_no_default
+// _loop0_44: param_no_default
 static asdl_seq *
-_loop0_45_rule(Parser *p)
+_loop0_44_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27437,7 +27684,7 @@ _loop0_45_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_45[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_44[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -27460,7 +27707,7 @@ _loop0_45_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_45[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_44[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27477,13 +27724,12 @@ _loop0_45_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_46: param_with_default
+// _loop1_45: param_with_default
 static asdl_seq *
-_loop1_46_rule(Parser *p)
+_loop1_45_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27505,7 +27751,7 @@ _loop1_46_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_46[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_45[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -27528,7 +27774,7 @@ _loop1_46_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_46[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_45[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27550,13 +27796,12 @@ _loop1_46_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_47: param_no_default
+// _loop0_46: param_no_default
 static asdl_seq *
-_loop0_47_rule(Parser *p)
+_loop0_46_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27578,7 +27823,7 @@ _loop0_47_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_47[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_46[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -27601,7 +27846,7 @@ _loop0_47_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_47[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_46[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27618,13 +27863,12 @@ _loop0_47_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_48: param_with_default
+// _loop1_47: param_with_default
 static asdl_seq *
-_loop1_48_rule(Parser *p)
+_loop1_47_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27646,7 +27890,7 @@ _loop1_48_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_48[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_47[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -27669,7 +27913,7 @@ _loop1_48_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_48[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_47[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27691,13 +27935,12 @@ _loop1_48_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_49: param_maybe_default
+// _loop0_48: param_maybe_default
 static asdl_seq *
-_loop0_49_rule(Parser *p)
+_loop0_48_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27719,7 +27962,7 @@ _loop0_49_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_49[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_48[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -27742,7 +27985,7 @@ _loop0_49_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_49[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_48[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27759,13 +28002,12 @@ _loop0_49_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_50: param_maybe_default
+// _loop0_49: param_maybe_default
 static asdl_seq *
-_loop0_50_rule(Parser *p)
+_loop0_49_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27787,7 +28029,7 @@ _loop0_50_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_50[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_49[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -27810,7 +28052,7 @@ _loop0_50_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_50[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_49[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27827,13 +28069,12 @@ _loop0_50_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_51: param_maybe_default
+// _loop1_50: param_maybe_default
 static asdl_seq *
-_loop1_51_rule(Parser *p)
+_loop1_50_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27855,7 +28096,7 @@ _loop1_51_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_51[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop1_50[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -27878,7 +28119,7 @@ _loop1_51_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_51[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_50[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -27900,13 +28141,12 @@ _loop1_51_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_53: ',' with_item
+// _loop0_52: ',' with_item
 static asdl_seq *
-_loop0_53_rule(Parser *p)
+_loop0_52_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27928,7 +28168,7 @@ _loop0_53_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_53[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
+        D(fprintf(stderr, "%*c> _loop0_52[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
         Token * _literal;
         withitem_ty elem;
         while (
@@ -27960,7 +28200,7 @@ _loop0_53_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_53[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_52[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' with_item"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -27977,13 +28217,12 @@ _loop0_53_rule(Parser *p)
     return _seq;
 }
 
-// _gather_52: with_item _loop0_53
+// _gather_51: with_item _loop0_52
 static asdl_seq *
-_gather_52_rule(Parser *p)
+_gather_51_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -27991,27 +28230,27 @@ _gather_52_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // with_item _loop0_53
+    { // with_item _loop0_52
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_52[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_53"));
+        D(fprintf(stderr, "%*c> _gather_51[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_52"));
         withitem_ty elem;
         asdl_seq * seq;
         if (
             (elem = with_item_rule(p))  // with_item
             &&
-            (seq = _loop0_53_rule(p))  // _loop0_53
+            (seq = _loop0_52_rule(p))  // _loop0_52
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_52[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_53"));
+            D(fprintf(stderr, "%*c+ _gather_51[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_52"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_52[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_53"));
+        D(fprintf(stderr, "%*c%s _gather_51[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_52"));
     }
     _res = NULL;
   done:
@@ -28019,13 +28258,12 @@ _gather_52_rule(Parser *p)
     return _res;
 }
 
-// _loop0_55: ',' with_item
+// _loop0_54: ',' with_item
 static asdl_seq *
-_loop0_55_rule(Parser *p)
+_loop0_54_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28047,7 +28285,7 @@ _loop0_55_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_55[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
+        D(fprintf(stderr, "%*c> _loop0_54[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
         Token * _literal;
         withitem_ty elem;
         while (
@@ -28079,7 +28317,7 @@ _loop0_55_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_55[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_54[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' with_item"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -28096,13 +28334,12 @@ _loop0_55_rule(Parser *p)
     return _seq;
 }
 
-// _gather_54: with_item _loop0_55
+// _gather_53: with_item _loop0_54
 static asdl_seq *
-_gather_54_rule(Parser *p)
+_gather_53_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28110,27 +28347,27 @@ _gather_54_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // with_item _loop0_55
+    { // with_item _loop0_54
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_54[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_55"));
+        D(fprintf(stderr, "%*c> _gather_53[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_54"));
         withitem_ty elem;
         asdl_seq * seq;
         if (
             (elem = with_item_rule(p))  // with_item
             &&
-            (seq = _loop0_55_rule(p))  // _loop0_55
+            (seq = _loop0_54_rule(p))  // _loop0_54
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_54[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_55"));
+            D(fprintf(stderr, "%*c+ _gather_53[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_54"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_54[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_55"));
+        D(fprintf(stderr, "%*c%s _gather_53[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_54"));
     }
     _res = NULL;
   done:
@@ -28138,13 +28375,12 @@ _gather_54_rule(Parser *p)
     return _res;
 }
 
-// _loop0_57: ',' with_item
+// _loop0_56: ',' with_item
 static asdl_seq *
-_loop0_57_rule(Parser *p)
+_loop0_56_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28166,7 +28402,7 @@ _loop0_57_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_57[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
+        D(fprintf(stderr, "%*c> _loop0_56[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
         Token * _literal;
         withitem_ty elem;
         while (
@@ -28198,7 +28434,7 @@ _loop0_57_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_57[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_56[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' with_item"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -28215,13 +28451,12 @@ _loop0_57_rule(Parser *p)
     return _seq;
 }
 
-// _gather_56: with_item _loop0_57
+// _gather_55: with_item _loop0_56
 static asdl_seq *
-_gather_56_rule(Parser *p)
+_gather_55_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28229,27 +28464,27 @@ _gather_56_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // with_item _loop0_57
+    { // with_item _loop0_56
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_56[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_57"));
+        D(fprintf(stderr, "%*c> _gather_55[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_56"));
         withitem_ty elem;
         asdl_seq * seq;
         if (
             (elem = with_item_rule(p))  // with_item
             &&
-            (seq = _loop0_57_rule(p))  // _loop0_57
+            (seq = _loop0_56_rule(p))  // _loop0_56
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_56[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_57"));
+            D(fprintf(stderr, "%*c+ _gather_55[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_56"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_56[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_57"));
+        D(fprintf(stderr, "%*c%s _gather_55[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_56"));
     }
     _res = NULL;
   done:
@@ -28257,13 +28492,12 @@ _gather_56_rule(Parser *p)
     return _res;
 }
 
-// _loop0_59: ',' with_item
+// _loop0_58: ',' with_item
 static asdl_seq *
-_loop0_59_rule(Parser *p)
+_loop0_58_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28285,7 +28519,7 @@ _loop0_59_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_59[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
+        D(fprintf(stderr, "%*c> _loop0_58[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' with_item"));
         Token * _literal;
         withitem_ty elem;
         while (
@@ -28317,7 +28551,7 @@ _loop0_59_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_59[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_58[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' with_item"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -28334,13 +28568,12 @@ _loop0_59_rule(Parser *p)
     return _seq;
 }
 
-// _gather_58: with_item _loop0_59
+// _gather_57: with_item _loop0_58
 static asdl_seq *
-_gather_58_rule(Parser *p)
+_gather_57_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28348,27 +28581,27 @@ _gather_58_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // with_item _loop0_59
+    { // with_item _loop0_58
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_58[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_59"));
+        D(fprintf(stderr, "%*c> _gather_57[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "with_item _loop0_58"));
         withitem_ty elem;
         asdl_seq * seq;
         if (
             (elem = with_item_rule(p))  // with_item
             &&
-            (seq = _loop0_59_rule(p))  // _loop0_59
+            (seq = _loop0_58_rule(p))  // _loop0_58
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_58[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_59"));
+            D(fprintf(stderr, "%*c+ _gather_57[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "with_item _loop0_58"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_58[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_59"));
+        D(fprintf(stderr, "%*c%s _gather_57[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "with_item _loop0_58"));
     }
     _res = NULL;
   done:
@@ -28376,13 +28609,12 @@ _gather_58_rule(Parser *p)
     return _res;
 }
 
-// _tmp_60: ',' | ')' | ':'
+// _tmp_59: ',' | ')' | ':'
 static void *
-_tmp_60_rule(Parser *p)
+_tmp_59_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28395,18 +28627,18 @@ _tmp_60_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_60[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_59[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_60[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_59[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_60[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_59[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     { // ')'
@@ -28414,18 +28646,18 @@ _tmp_60_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_60[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
+        D(fprintf(stderr, "%*c> _tmp_59[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_60[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
+            D(fprintf(stderr, "%*c+ _tmp_59[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_60[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_59[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "')'"));
     }
     { // ':'
@@ -28433,18 +28665,18 @@ _tmp_60_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_60[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_59[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_60[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_59[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_60[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_59[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     _res = NULL;
@@ -28453,13 +28685,12 @@ _tmp_60_rule(Parser *p)
     return _res;
 }
 
-// _loop1_61: except_block
+// _loop1_60: except_block
 static asdl_seq *
-_loop1_61_rule(Parser *p)
+_loop1_60_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28481,7 +28712,7 @@ _loop1_61_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_61[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_block"));
+        D(fprintf(stderr, "%*c> _loop1_60[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_block"));
         excepthandler_ty except_block_var;
         while (
             (except_block_var = except_block_rule(p))  // except_block
@@ -28504,7 +28735,7 @@ _loop1_61_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_61[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_60[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "except_block"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -28526,13 +28757,12 @@ _loop1_61_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_62: except_star_block
+// _loop1_61: except_star_block
 static asdl_seq *
-_loop1_62_rule(Parser *p)
+_loop1_61_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28554,7 +28784,7 @@ _loop1_62_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_62[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_star_block"));
+        D(fprintf(stderr, "%*c> _loop1_61[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_star_block"));
         excepthandler_ty except_star_block_var;
         while (
             (except_star_block_var = except_star_block_rule(p))  // except_star_block
@@ -28577,7 +28807,7 @@ _loop1_62_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_62[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_61[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "except_star_block"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -28599,13 +28829,12 @@ _loop1_62_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_63: 'as' NAME
+// _tmp_62: 'as' NAME
 static void *
-_tmp_63_rule(Parser *p)
+_tmp_62_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28618,16 +28847,16 @@ _tmp_63_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_63[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_62[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_63[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_62[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -28637,7 +28866,7 @@ _tmp_63_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_63[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_62[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -28646,13 +28875,12 @@ _tmp_63_rule(Parser *p)
     return _res;
 }
 
-// _tmp_64: 'as' NAME
+// _tmp_63: 'as' NAME
 static void *
-_tmp_64_rule(Parser *p)
+_tmp_63_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28665,16 +28893,16 @@ _tmp_64_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_64[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_63[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_64[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_63[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -28684,7 +28912,7 @@ _tmp_64_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_64[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_63[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -28693,13 +28921,12 @@ _tmp_64_rule(Parser *p)
     return _res;
 }
 
-// _loop1_65: case_block
+// _loop1_64: case_block
 static asdl_seq *
-_loop1_65_rule(Parser *p)
+_loop1_64_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28721,7 +28948,7 @@ _loop1_65_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_65[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "case_block"));
+        D(fprintf(stderr, "%*c> _loop1_64[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "case_block"));
         match_case_ty case_block_var;
         while (
             (case_block_var = case_block_rule(p))  // case_block
@@ -28744,7 +28971,7 @@ _loop1_65_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_65[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_64[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "case_block"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -28766,13 +28993,12 @@ _loop1_65_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_67: '|' closed_pattern
+// _loop0_66: '|' closed_pattern
 static asdl_seq *
-_loop0_67_rule(Parser *p)
+_loop0_66_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28794,7 +29020,7 @@ _loop0_67_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_67[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'|' closed_pattern"));
+        D(fprintf(stderr, "%*c> _loop0_66[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'|' closed_pattern"));
         Token * _literal;
         pattern_ty elem;
         while (
@@ -28826,7 +29052,7 @@ _loop0_67_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_67[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_66[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'|' closed_pattern"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -28843,13 +29069,12 @@ _loop0_67_rule(Parser *p)
     return _seq;
 }
 
-// _gather_66: closed_pattern _loop0_67
+// _gather_65: closed_pattern _loop0_66
 static asdl_seq *
-_gather_66_rule(Parser *p)
+_gather_65_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28857,27 +29082,27 @@ _gather_66_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // closed_pattern _loop0_67
+    { // closed_pattern _loop0_66
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_66[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "closed_pattern _loop0_67"));
+        D(fprintf(stderr, "%*c> _gather_65[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "closed_pattern _loop0_66"));
         pattern_ty elem;
         asdl_seq * seq;
         if (
             (elem = closed_pattern_rule(p))  // closed_pattern
             &&
-            (seq = _loop0_67_rule(p))  // _loop0_67
+            (seq = _loop0_66_rule(p))  // _loop0_66
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_66[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "closed_pattern _loop0_67"));
+            D(fprintf(stderr, "%*c+ _gather_65[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "closed_pattern _loop0_66"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_66[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "closed_pattern _loop0_67"));
+        D(fprintf(stderr, "%*c%s _gather_65[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "closed_pattern _loop0_66"));
     }
     _res = NULL;
   done:
@@ -28885,13 +29110,12 @@ _gather_66_rule(Parser *p)
     return _res;
 }
 
-// _tmp_68: '+' | '-'
+// _tmp_67: '+' | '-'
 static void *
-_tmp_68_rule(Parser *p)
+_tmp_67_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28904,18 +29128,18 @@ _tmp_68_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_68[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'+'"));
+        D(fprintf(stderr, "%*c> _tmp_67[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'+'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 14))  // token='+'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_68[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'+'"));
+            D(fprintf(stderr, "%*c+ _tmp_67[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'+'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_68[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_67[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'+'"));
     }
     { // '-'
@@ -28923,18 +29147,18 @@ _tmp_68_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_68[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'-'"));
+        D(fprintf(stderr, "%*c> _tmp_67[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'-'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 15))  // token='-'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_68[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'-'"));
+            D(fprintf(stderr, "%*c+ _tmp_67[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'-'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_68[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_67[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'-'"));
     }
     _res = NULL;
@@ -28943,13 +29167,12 @@ _tmp_68_rule(Parser *p)
     return _res;
 }
 
-// _tmp_69: '+' | '-'
+// _tmp_68: '+' | '-'
 static void *
-_tmp_69_rule(Parser *p)
+_tmp_68_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -28962,18 +29185,18 @@ _tmp_69_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_69[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'+'"));
+        D(fprintf(stderr, "%*c> _tmp_68[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'+'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 14))  // token='+'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_69[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'+'"));
+            D(fprintf(stderr, "%*c+ _tmp_68[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'+'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_69[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_68[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'+'"));
     }
     { // '-'
@@ -28981,18 +29204,18 @@ _tmp_69_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_69[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'-'"));
+        D(fprintf(stderr, "%*c> _tmp_68[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'-'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 15))  // token='-'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_69[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'-'"));
+            D(fprintf(stderr, "%*c+ _tmp_68[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'-'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_69[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_68[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'-'"));
     }
     _res = NULL;
@@ -29001,13 +29224,12 @@ _tmp_69_rule(Parser *p)
     return _res;
 }
 
-// _tmp_70: '.' | '(' | '='
+// _tmp_69: '.' | '(' | '='
 static void *
-_tmp_70_rule(Parser *p)
+_tmp_69_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29020,18 +29242,18 @@ _tmp_70_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_70[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
+        D(fprintf(stderr, "%*c> _tmp_69[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 23))  // token='.'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_70[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
+            D(fprintf(stderr, "%*c+ _tmp_69[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_70[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_69[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'.'"));
     }
     { // '('
@@ -29039,18 +29261,18 @@ _tmp_70_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_70[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'('"));
+        D(fprintf(stderr, "%*c> _tmp_69[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'('"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_70[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'('"));
+            D(fprintf(stderr, "%*c+ _tmp_69[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'('"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_70[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_69[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'('"));
     }
     { // '='
@@ -29058,18 +29280,18 @@ _tmp_70_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_70[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
+        D(fprintf(stderr, "%*c> _tmp_69[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_70[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
+            D(fprintf(stderr, "%*c+ _tmp_69[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_70[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_69[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'='"));
     }
     _res = NULL;
@@ -29078,13 +29300,12 @@ _tmp_70_rule(Parser *p)
     return _res;
 }
 
-// _tmp_71: '.' | '(' | '='
+// _tmp_70: '.' | '(' | '='
 static void *
-_tmp_71_rule(Parser *p)
+_tmp_70_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29097,18 +29318,18 @@ _tmp_71_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_71[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
+        D(fprintf(stderr, "%*c> _tmp_70[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 23))  // token='.'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_71[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
+            D(fprintf(stderr, "%*c+ _tmp_70[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_71[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_70[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'.'"));
     }
     { // '('
@@ -29116,18 +29337,18 @@ _tmp_71_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_71[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'('"));
+        D(fprintf(stderr, "%*c> _tmp_70[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'('"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_71[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'('"));
+            D(fprintf(stderr, "%*c+ _tmp_70[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'('"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_71[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_70[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'('"));
     }
     { // '='
@@ -29135,18 +29356,18 @@ _tmp_71_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_71[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
+        D(fprintf(stderr, "%*c> _tmp_70[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_71[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
+            D(fprintf(stderr, "%*c+ _tmp_70[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_71[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_70[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'='"));
     }
     _res = NULL;
@@ -29155,13 +29376,12 @@ _tmp_71_rule(Parser *p)
     return _res;
 }
 
-// _loop0_73: ',' maybe_star_pattern
+// _loop0_72: ',' maybe_star_pattern
 static asdl_seq *
-_loop0_73_rule(Parser *p)
+_loop0_72_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29183,7 +29403,7 @@ _loop0_73_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_73[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' maybe_star_pattern"));
+        D(fprintf(stderr, "%*c> _loop0_72[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' maybe_star_pattern"));
         Token * _literal;
         pattern_ty elem;
         while (
@@ -29215,7 +29435,7 @@ _loop0_73_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_73[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_72[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' maybe_star_pattern"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -29232,13 +29452,12 @@ _loop0_73_rule(Parser *p)
     return _seq;
 }
 
-// _gather_72: maybe_star_pattern _loop0_73
+// _gather_71: maybe_star_pattern _loop0_72
 static asdl_seq *
-_gather_72_rule(Parser *p)
+_gather_71_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29246,27 +29465,27 @@ _gather_72_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // maybe_star_pattern _loop0_73
+    { // maybe_star_pattern _loop0_72
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_72[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "maybe_star_pattern _loop0_73"));
+        D(fprintf(stderr, "%*c> _gather_71[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "maybe_star_pattern _loop0_72"));
         pattern_ty elem;
         asdl_seq * seq;
         if (
             (elem = maybe_star_pattern_rule(p))  // maybe_star_pattern
             &&
-            (seq = _loop0_73_rule(p))  // _loop0_73
+            (seq = _loop0_72_rule(p))  // _loop0_72
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_72[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "maybe_star_pattern _loop0_73"));
+            D(fprintf(stderr, "%*c+ _gather_71[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "maybe_star_pattern _loop0_72"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_72[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "maybe_star_pattern _loop0_73"));
+        D(fprintf(stderr, "%*c%s _gather_71[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "maybe_star_pattern _loop0_72"));
     }
     _res = NULL;
   done:
@@ -29274,13 +29493,12 @@ _gather_72_rule(Parser *p)
     return _res;
 }
 
-// _loop0_75: ',' key_value_pattern
+// _loop0_74: ',' key_value_pattern
 static asdl_seq *
-_loop0_75_rule(Parser *p)
+_loop0_74_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29302,7 +29520,7 @@ _loop0_75_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_75[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' key_value_pattern"));
+        D(fprintf(stderr, "%*c> _loop0_74[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' key_value_pattern"));
         Token * _literal;
         KeyPatternPair* elem;
         while (
@@ -29334,7 +29552,7 @@ _loop0_75_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_75[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_74[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' key_value_pattern"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -29351,13 +29569,12 @@ _loop0_75_rule(Parser *p)
     return _seq;
 }
 
-// _gather_74: key_value_pattern _loop0_75
+// _gather_73: key_value_pattern _loop0_74
 static asdl_seq *
-_gather_74_rule(Parser *p)
+_gather_73_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29365,27 +29582,27 @@ _gather_74_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // key_value_pattern _loop0_75
+    { // key_value_pattern _loop0_74
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_74[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "key_value_pattern _loop0_75"));
+        D(fprintf(stderr, "%*c> _gather_73[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "key_value_pattern _loop0_74"));
         KeyPatternPair* elem;
         asdl_seq * seq;
         if (
             (elem = key_value_pattern_rule(p))  // key_value_pattern
             &&
-            (seq = _loop0_75_rule(p))  // _loop0_75
+            (seq = _loop0_74_rule(p))  // _loop0_74
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_74[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "key_value_pattern _loop0_75"));
+            D(fprintf(stderr, "%*c+ _gather_73[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "key_value_pattern _loop0_74"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_74[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "key_value_pattern _loop0_75"));
+        D(fprintf(stderr, "%*c%s _gather_73[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "key_value_pattern _loop0_74"));
     }
     _res = NULL;
   done:
@@ -29393,13 +29610,12 @@ _gather_74_rule(Parser *p)
     return _res;
 }
 
-// _tmp_76: literal_expr | attr
+// _tmp_75: literal_expr | attr
 static void *
-_tmp_76_rule(Parser *p)
+_tmp_75_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29412,18 +29628,18 @@ _tmp_76_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_76[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "literal_expr"));
+        D(fprintf(stderr, "%*c> _tmp_75[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "literal_expr"));
         expr_ty literal_expr_var;
         if (
             (literal_expr_var = literal_expr_rule(p))  // literal_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_76[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "literal_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_75[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "literal_expr"));
             _res = literal_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_76[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_75[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "literal_expr"));
     }
     { // attr
@@ -29431,18 +29647,18 @@ _tmp_76_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_76[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "attr"));
+        D(fprintf(stderr, "%*c> _tmp_75[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "attr"));
         expr_ty attr_var;
         if (
             (attr_var = attr_rule(p))  // attr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_76[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "attr"));
+            D(fprintf(stderr, "%*c+ _tmp_75[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "attr"));
             _res = attr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_76[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_75[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "attr"));
     }
     _res = NULL;
@@ -29451,13 +29667,12 @@ _tmp_76_rule(Parser *p)
     return _res;
 }
 
-// _loop0_78: ',' pattern
+// _loop0_77: ',' pattern
 static asdl_seq *
-_loop0_78_rule(Parser *p)
+_loop0_77_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29479,7 +29694,7 @@ _loop0_78_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_78[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' pattern"));
+        D(fprintf(stderr, "%*c> _loop0_77[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' pattern"));
         Token * _literal;
         pattern_ty elem;
         while (
@@ -29511,7 +29726,7 @@ _loop0_78_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_78[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_77[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' pattern"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -29528,13 +29743,12 @@ _loop0_78_rule(Parser *p)
     return _seq;
 }
 
-// _gather_77: pattern _loop0_78
+// _gather_76: pattern _loop0_77
 static asdl_seq *
-_gather_77_rule(Parser *p)
+_gather_76_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29542,27 +29756,27 @@ _gather_77_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // pattern _loop0_78
+    { // pattern _loop0_77
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_77[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "pattern _loop0_78"));
+        D(fprintf(stderr, "%*c> _gather_76[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "pattern _loop0_77"));
         pattern_ty elem;
         asdl_seq * seq;
         if (
             (elem = pattern_rule(p))  // pattern
             &&
-            (seq = _loop0_78_rule(p))  // _loop0_78
+            (seq = _loop0_77_rule(p))  // _loop0_77
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_77[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "pattern _loop0_78"));
+            D(fprintf(stderr, "%*c+ _gather_76[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "pattern _loop0_77"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_77[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "pattern _loop0_78"));
+        D(fprintf(stderr, "%*c%s _gather_76[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "pattern _loop0_77"));
     }
     _res = NULL;
   done:
@@ -29570,13 +29784,12 @@ _gather_77_rule(Parser *p)
     return _res;
 }
 
-// _loop0_80: ',' keyword_pattern
+// _loop0_79: ',' keyword_pattern
 static asdl_seq *
-_loop0_80_rule(Parser *p)
+_loop0_79_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29598,7 +29811,7 @@ _loop0_80_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_80[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' keyword_pattern"));
+        D(fprintf(stderr, "%*c> _loop0_79[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' keyword_pattern"));
         Token * _literal;
         KeyPatternPair* elem;
         while (
@@ -29630,7 +29843,7 @@ _loop0_80_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_80[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_79[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' keyword_pattern"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -29647,13 +29860,12 @@ _loop0_80_rule(Parser *p)
     return _seq;
 }
 
-// _gather_79: keyword_pattern _loop0_80
+// _gather_78: keyword_pattern _loop0_79
 static asdl_seq *
-_gather_79_rule(Parser *p)
+_gather_78_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29661,27 +29873,27 @@ _gather_79_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // keyword_pattern _loop0_80
+    { // keyword_pattern _loop0_79
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_79[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "keyword_pattern _loop0_80"));
+        D(fprintf(stderr, "%*c> _gather_78[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "keyword_pattern _loop0_79"));
         KeyPatternPair* elem;
         asdl_seq * seq;
         if (
             (elem = keyword_pattern_rule(p))  // keyword_pattern
             &&
-            (seq = _loop0_80_rule(p))  // _loop0_80
+            (seq = _loop0_79_rule(p))  // _loop0_79
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_79[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "keyword_pattern _loop0_80"));
+            D(fprintf(stderr, "%*c+ _gather_78[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "keyword_pattern _loop0_79"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_79[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "keyword_pattern _loop0_80"));
+        D(fprintf(stderr, "%*c%s _gather_78[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "keyword_pattern _loop0_79"));
     }
     _res = NULL;
   done:
@@ -29689,13 +29901,129 @@ _gather_79_rule(Parser *p)
     return _res;
 }
 
-// _loop1_81: (',' expression)
+// _loop0_81: ',' type_param
 static asdl_seq *
-_loop1_81_rule(Parser *p)
+_loop0_81_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void *_res = NULL;
+    int _mark = p->mark;
+    void **_children = PyMem_Malloc(sizeof(void *));
+    if (!_children) {
+        p->error_indicator = 1;
+        PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    Py_ssize_t _children_capacity = 1;
+    Py_ssize_t _n = 0;
+    { // ',' type_param
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _loop0_81[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' type_param"));
+        Token * _literal;
+        type_param_ty elem;
+        while (
+            (_literal = _PyPegen_expect_token(p, 12))  // token=','
+            &&
+            (elem = type_param_rule(p))  // type_param
+        )
+        {
+            _res = elem;
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                PyMem_Free(_children);
+                p->level--;
+                return NULL;
+            }
+            if (_n == _children_capacity) {
+                _children_capacity *= 2;
+                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
+                if (!_new_children) {
+                    PyMem_Free(_children);
+                    p->error_indicator = 1;
+                    PyErr_NoMemory();
+                    p->level--;
+                    return NULL;
+                }
+                _children = _new_children;
+            }
+            _children[_n++] = _res;
+            _mark = p->mark;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _loop0_81[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' type_param"));
+    }
+    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
+    if (!_seq) {
+        PyMem_Free(_children);
         p->error_indicator = 1;
         PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
+    PyMem_Free(_children);
+    p->level--;
+    return _seq;
+}
+
+// _gather_80: type_param _loop0_81
+static asdl_seq *
+_gather_80_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    asdl_seq * _res = NULL;
+    int _mark = p->mark;
+    { // type_param _loop0_81
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _gather_80[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "type_param _loop0_81"));
+        type_param_ty elem;
+        asdl_seq * seq;
+        if (
+            (elem = type_param_rule(p))  // type_param
+            &&
+            (seq = _loop0_81_rule(p))  // _loop0_81
+        )
+        {
+            D(fprintf(stderr, "%*c+ _gather_80[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "type_param _loop0_81"));
+            _res = _PyPegen_seq_insert_in_front(p, elem, seq);
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _gather_80[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "type_param _loop0_81"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _loop1_82: (',' expression)
+static asdl_seq *
+_loop1_82_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29717,13 +30045,13 @@ _loop1_81_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_81[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' expression)"));
-        void *_tmp_248_var;
+        D(fprintf(stderr, "%*c> _loop1_82[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' expression)"));
+        void *_tmp_252_var;
         while (
-            (_tmp_248_var = _tmp_248_rule(p))  // ',' expression
+            (_tmp_252_var = _tmp_252_rule(p))  // ',' expression
         )
         {
-            _res = _tmp_248_var;
+            _res = _tmp_252_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -29740,7 +30068,7 @@ _loop1_81_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_81[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_82[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(',' expression)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -29762,13 +30090,12 @@ _loop1_81_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_82: (',' star_expression)
+// _loop1_83: (',' star_expression)
 static asdl_seq *
-_loop1_82_rule(Parser *p)
+_loop1_83_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29790,13 +30117,13 @@ _loop1_82_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_82[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' star_expression)"));
-        void *_tmp_249_var;
+        D(fprintf(stderr, "%*c> _loop1_83[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' star_expression)"));
+        void *_tmp_253_var;
         while (
-            (_tmp_249_var = _tmp_249_rule(p))  // ',' star_expression
+            (_tmp_253_var = _tmp_253_rule(p))  // ',' star_expression
         )
         {
-            _res = _tmp_249_var;
+            _res = _tmp_253_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -29813,7 +30140,7 @@ _loop1_82_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_82[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_83[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(',' star_expression)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -29835,13 +30162,12 @@ _loop1_82_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_84: ',' star_named_expression
+// _loop0_85: ',' star_named_expression
 static asdl_seq *
-_loop0_84_rule(Parser *p)
+_loop0_85_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29863,7 +30189,7 @@ _loop0_84_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_84[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_named_expression"));
+        D(fprintf(stderr, "%*c> _loop0_85[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_named_expression"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -29895,7 +30221,7 @@ _loop0_84_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_84[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_85[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' star_named_expression"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -29912,13 +30238,12 @@ _loop0_84_rule(Parser *p)
     return _seq;
 }
 
-// _gather_83: star_named_expression _loop0_84
+// _gather_84: star_named_expression _loop0_85
 static asdl_seq *
-_gather_83_rule(Parser *p)
+_gather_84_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29926,27 +30251,27 @@ _gather_83_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // star_named_expression _loop0_84
+    { // star_named_expression _loop0_85
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_83[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expression _loop0_84"));
+        D(fprintf(stderr, "%*c> _gather_84[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expression _loop0_85"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = star_named_expression_rule(p))  // star_named_expression
             &&
-            (seq = _loop0_84_rule(p))  // _loop0_84
+            (seq = _loop0_85_rule(p))  // _loop0_85
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_83[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_named_expression _loop0_84"));
+            D(fprintf(stderr, "%*c+ _gather_84[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_named_expression _loop0_85"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_83[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_named_expression _loop0_84"));
+        D(fprintf(stderr, "%*c%s _gather_84[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_named_expression _loop0_85"));
     }
     _res = NULL;
   done:
@@ -29954,13 +30279,12 @@ _gather_83_rule(Parser *p)
     return _res;
 }
 
-// _loop1_85: ('or' conjunction)
+// _loop1_86: ('or' conjunction)
 static asdl_seq *
-_loop1_85_rule(Parser *p)
+_loop1_86_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -29982,13 +30306,13 @@ _loop1_85_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_85[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('or' conjunction)"));
-        void *_tmp_250_var;
+        D(fprintf(stderr, "%*c> _loop1_86[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('or' conjunction)"));
+        void *_tmp_254_var;
         while (
-            (_tmp_250_var = _tmp_250_rule(p))  // 'or' conjunction
+            (_tmp_254_var = _tmp_254_rule(p))  // 'or' conjunction
         )
         {
-            _res = _tmp_250_var;
+            _res = _tmp_254_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -30005,7 +30329,7 @@ _loop1_85_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_85[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_86[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('or' conjunction)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -30027,13 +30351,12 @@ _loop1_85_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_86: ('and' inversion)
+// _loop1_87: ('and' inversion)
 static asdl_seq *
-_loop1_86_rule(Parser *p)
+_loop1_87_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30055,13 +30378,13 @@ _loop1_86_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_86[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('and' inversion)"));
-        void *_tmp_251_var;
+        D(fprintf(stderr, "%*c> _loop1_87[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('and' inversion)"));
+        void *_tmp_255_var;
         while (
-            (_tmp_251_var = _tmp_251_rule(p))  // 'and' inversion
+            (_tmp_255_var = _tmp_255_rule(p))  // 'and' inversion
         )
         {
-            _res = _tmp_251_var;
+            _res = _tmp_255_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -30078,7 +30401,7 @@ _loop1_86_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_86[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_87[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('and' inversion)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -30100,13 +30423,12 @@ _loop1_86_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_87: compare_op_bitwise_or_pair
+// _loop1_88: compare_op_bitwise_or_pair
 static asdl_seq *
-_loop1_87_rule(Parser *p)
+_loop1_88_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30128,7 +30450,7 @@ _loop1_87_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_87[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "compare_op_bitwise_or_pair"));
+        D(fprintf(stderr, "%*c> _loop1_88[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "compare_op_bitwise_or_pair"));
         CmpopExprPair* compare_op_bitwise_or_pair_var;
         while (
             (compare_op_bitwise_or_pair_var = compare_op_bitwise_or_pair_rule(p))  // compare_op_bitwise_or_pair
@@ -30151,7 +30473,7 @@ _loop1_87_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_87[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_88[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "compare_op_bitwise_or_pair"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -30173,13 +30495,12 @@ _loop1_87_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_88: '!='
+// _tmp_89: '!='
 static void *
-_tmp_88_rule(Parser *p)
+_tmp_89_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30192,13 +30513,13 @@ _tmp_88_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_88[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!='"));
+        D(fprintf(stderr, "%*c> _tmp_89[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!='"));
         Token * tok;
         if (
             (tok = _PyPegen_expect_token(p, 28))  // token='!='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_88[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!='"));
+            D(fprintf(stderr, "%*c+ _tmp_89[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!='"));
             _res = _PyPegen_check_barry_as_flufl ( p , tok ) ? NULL : tok;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -30208,7 +30529,7 @@ _tmp_88_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_88[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_89[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'!='"));
     }
     _res = NULL;
@@ -30217,13 +30538,12 @@ _tmp_88_rule(Parser *p)
     return _res;
 }
 
-// _loop0_90: ',' (slice | starred_expression)
+// _loop0_91: ',' (slice | starred_expression)
 static asdl_seq *
-_loop0_90_rule(Parser *p)
+_loop0_91_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30245,13 +30565,13 @@ _loop0_90_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_90[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (slice | starred_expression)"));
+        D(fprintf(stderr, "%*c> _loop0_91[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (slice | starred_expression)"));
         Token * _literal;
         void *elem;
         while (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (elem = _tmp_252_rule(p))  // slice | starred_expression
+            (elem = _tmp_256_rule(p))  // slice | starred_expression
         )
         {
             _res = elem;
@@ -30277,7 +30597,7 @@ _loop0_90_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_90[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_91[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (slice | starred_expression)"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -30294,13 +30614,12 @@ _loop0_90_rule(Parser *p)
     return _seq;
 }
 
-// _gather_89: (slice | starred_expression) _loop0_90
+// _gather_90: (slice | starred_expression) _loop0_91
 static asdl_seq *
-_gather_89_rule(Parser *p)
+_gather_90_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30308,27 +30627,27 @@ _gather_89_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // (slice | starred_expression) _loop0_90
+    { // (slice | starred_expression) _loop0_91
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_89[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(slice | starred_expression) _loop0_90"));
+        D(fprintf(stderr, "%*c> _gather_90[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(slice | starred_expression) _loop0_91"));
         void *elem;
         asdl_seq * seq;
         if (
-            (elem = _tmp_252_rule(p))  // slice | starred_expression
+            (elem = _tmp_256_rule(p))  // slice | starred_expression
             &&
-            (seq = _loop0_90_rule(p))  // _loop0_90
+            (seq = _loop0_91_rule(p))  // _loop0_91
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_89[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(slice | starred_expression) _loop0_90"));
+            D(fprintf(stderr, "%*c+ _gather_90[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(slice | starred_expression) _loop0_91"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_89[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(slice | starred_expression) _loop0_90"));
+        D(fprintf(stderr, "%*c%s _gather_90[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(slice | starred_expression) _loop0_91"));
     }
     _res = NULL;
   done:
@@ -30336,13 +30655,12 @@ _gather_89_rule(Parser *p)
     return _res;
 }
 
-// _tmp_91: ':' expression?
+// _tmp_92: ':' expression?
 static void *
-_tmp_91_rule(Parser *p)
+_tmp_92_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30355,7 +30673,7 @@ _tmp_91_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_91[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':' expression?"));
+        D(fprintf(stderr, "%*c> _tmp_92[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':' expression?"));
         Token * _literal;
         void *d;
         if (
@@ -30364,7 +30682,7 @@ _tmp_91_rule(Parser *p)
             (d = expression_rule(p), !p->error_indicator)  // expression?
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_91[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':' expression?"));
+            D(fprintf(stderr, "%*c+ _tmp_92[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':' expression?"));
             _res = d;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -30374,7 +30692,7 @@ _tmp_91_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_91[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_92[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':' expression?"));
     }
     _res = NULL;
@@ -30383,13 +30701,12 @@ _tmp_91_rule(Parser *p)
     return _res;
 }
 
-// _tmp_92: STRING | FSTRING_START
+// _tmp_93: STRING | FSTRING_START
 static void *
-_tmp_92_rule(Parser *p)
+_tmp_93_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30402,18 +30719,18 @@ _tmp_92_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_92[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "STRING"));
+        D(fprintf(stderr, "%*c> _tmp_93[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "STRING"));
         expr_ty string_var;
         if (
             (string_var = _PyPegen_string_token(p))  // STRING
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_92[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "STRING"));
+            D(fprintf(stderr, "%*c+ _tmp_93[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "STRING"));
             _res = string_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_92[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_93[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "STRING"));
     }
     { // FSTRING_START
@@ -30421,18 +30738,18 @@ _tmp_92_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_92[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "FSTRING_START"));
+        D(fprintf(stderr, "%*c> _tmp_93[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "FSTRING_START"));
         Token * fstring_start_var;
         if (
             (fstring_start_var = _PyPegen_expect_token(p, FSTRING_START))  // token='FSTRING_START'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_92[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "FSTRING_START"));
+            D(fprintf(stderr, "%*c+ _tmp_93[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "FSTRING_START"));
             _res = fstring_start_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_92[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_93[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "FSTRING_START"));
     }
     _res = NULL;
@@ -30441,13 +30758,12 @@ _tmp_92_rule(Parser *p)
     return _res;
 }
 
-// _tmp_93: tuple | group | genexp
+// _tmp_94: tuple | group | genexp
 static void *
-_tmp_93_rule(Parser *p)
+_tmp_94_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30460,18 +30776,18 @@ _tmp_93_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_93[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "tuple"));
+        D(fprintf(stderr, "%*c> _tmp_94[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "tuple"));
         expr_ty tuple_var;
         if (
             (tuple_var = tuple_rule(p))  // tuple
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_93[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "tuple"));
+            D(fprintf(stderr, "%*c+ _tmp_94[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "tuple"));
             _res = tuple_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_93[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_94[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "tuple"));
     }
     { // group
@@ -30479,18 +30795,18 @@ _tmp_93_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_93[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "group"));
+        D(fprintf(stderr, "%*c> _tmp_94[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "group"));
         expr_ty group_var;
         if (
             (group_var = group_rule(p))  // group
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_93[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "group"));
+            D(fprintf(stderr, "%*c+ _tmp_94[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "group"));
             _res = group_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_93[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_94[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "group"));
     }
     { // genexp
@@ -30498,18 +30814,18 @@ _tmp_93_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_93[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "genexp"));
+        D(fprintf(stderr, "%*c> _tmp_94[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "genexp"));
         expr_ty genexp_var;
         if (
             (genexp_var = genexp_rule(p))  // genexp
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_93[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "genexp"));
+            D(fprintf(stderr, "%*c+ _tmp_94[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "genexp"));
             _res = genexp_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_93[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_94[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "genexp"));
     }
     _res = NULL;
@@ -30518,13 +30834,12 @@ _tmp_93_rule(Parser *p)
     return _res;
 }
 
-// _tmp_94: list | listcomp
+// _tmp_95: list | listcomp
 static void *
-_tmp_94_rule(Parser *p)
+_tmp_95_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30537,18 +30852,18 @@ _tmp_94_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_94[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "list"));
+        D(fprintf(stderr, "%*c> _tmp_95[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "list"));
         expr_ty list_var;
         if (
             (list_var = list_rule(p))  // list
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_94[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "list"));
+            D(fprintf(stderr, "%*c+ _tmp_95[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "list"));
             _res = list_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_94[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_95[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "list"));
     }
     { // listcomp
@@ -30556,18 +30871,18 @@ _tmp_94_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_94[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "listcomp"));
+        D(fprintf(stderr, "%*c> _tmp_95[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "listcomp"));
         expr_ty listcomp_var;
         if (
             (listcomp_var = listcomp_rule(p))  // listcomp
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_94[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "listcomp"));
+            D(fprintf(stderr, "%*c+ _tmp_95[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "listcomp"));
             _res = listcomp_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_94[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_95[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "listcomp"));
     }
     _res = NULL;
@@ -30576,13 +30891,12 @@ _tmp_94_rule(Parser *p)
     return _res;
 }
 
-// _tmp_95: dict | set | dictcomp | setcomp
+// _tmp_96: dict | set | dictcomp | setcomp
 static void *
-_tmp_95_rule(Parser *p)
+_tmp_96_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30595,18 +30909,18 @@ _tmp_95_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_95[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dict"));
+        D(fprintf(stderr, "%*c> _tmp_96[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dict"));
         expr_ty dict_var;
         if (
             (dict_var = dict_rule(p))  // dict
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_95[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dict"));
+            D(fprintf(stderr, "%*c+ _tmp_96[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dict"));
             _res = dict_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_95[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_96[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "dict"));
     }
     { // set
@@ -30614,18 +30928,18 @@ _tmp_95_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_95[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "set"));
+        D(fprintf(stderr, "%*c> _tmp_96[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "set"));
         expr_ty set_var;
         if (
             (set_var = set_rule(p))  // set
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_95[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "set"));
+            D(fprintf(stderr, "%*c+ _tmp_96[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "set"));
             _res = set_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_95[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_96[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "set"));
     }
     { // dictcomp
@@ -30633,18 +30947,18 @@ _tmp_95_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_95[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dictcomp"));
+        D(fprintf(stderr, "%*c> _tmp_96[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dictcomp"));
         expr_ty dictcomp_var;
         if (
             (dictcomp_var = dictcomp_rule(p))  // dictcomp
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_95[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dictcomp"));
+            D(fprintf(stderr, "%*c+ _tmp_96[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dictcomp"));
             _res = dictcomp_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_95[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_96[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "dictcomp"));
     }
     { // setcomp
@@ -30652,18 +30966,18 @@ _tmp_95_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_95[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "setcomp"));
+        D(fprintf(stderr, "%*c> _tmp_96[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "setcomp"));
         expr_ty setcomp_var;
         if (
             (setcomp_var = setcomp_rule(p))  // setcomp
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_95[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "setcomp"));
+            D(fprintf(stderr, "%*c+ _tmp_96[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "setcomp"));
             _res = setcomp_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_95[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_96[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "setcomp"));
     }
     _res = NULL;
@@ -30672,13 +30986,12 @@ _tmp_95_rule(Parser *p)
     return _res;
 }
 
-// _tmp_96: yield_expr | named_expression
+// _tmp_97: yield_expr | named_expression
 static void *
-_tmp_96_rule(Parser *p)
+_tmp_97_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30691,18 +31004,18 @@ _tmp_96_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_96[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_97[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_96[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_97[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_96[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_97[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // named_expression
@@ -30710,18 +31023,18 @@ _tmp_96_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_96[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "named_expression"));
+        D(fprintf(stderr, "%*c> _tmp_97[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "named_expression"));
         expr_ty named_expression_var;
         if (
             (named_expression_var = named_expression_rule(p))  // named_expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_96[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "named_expression"));
+            D(fprintf(stderr, "%*c+ _tmp_97[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "named_expression"));
             _res = named_expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_96[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_97[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "named_expression"));
     }
     _res = NULL;
@@ -30730,13 +31043,12 @@ _tmp_96_rule(Parser *p)
     return _res;
 }
 
-// _loop0_97: lambda_param_no_default
+// _loop0_98: lambda_param_no_default
 static asdl_seq *
-_loop0_97_rule(Parser *p)
+_loop0_98_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30758,7 +31070,7 @@ _loop0_97_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_97[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_98[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -30781,7 +31093,7 @@ _loop0_97_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_97[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_98[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -30798,13 +31110,12 @@ _loop0_97_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_98: lambda_param_with_default
+// _loop0_99: lambda_param_with_default
 static asdl_seq *
-_loop0_98_rule(Parser *p)
+_loop0_99_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30826,7 +31137,7 @@ _loop0_98_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_98[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop0_99[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -30849,7 +31160,7 @@ _loop0_98_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_98[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_99[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -30866,13 +31177,12 @@ _loop0_98_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_99: lambda_param_with_default
+// _loop0_100: lambda_param_with_default
 static asdl_seq *
-_loop0_99_rule(Parser *p)
+_loop0_100_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30894,7 +31204,7 @@ _loop0_99_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_99[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop0_100[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -30917,7 +31227,7 @@ _loop0_99_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_99[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_100[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -30934,13 +31244,12 @@ _loop0_99_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_100: lambda_param_no_default
+// _loop1_101: lambda_param_no_default
 static asdl_seq *
-_loop1_100_rule(Parser *p)
+_loop1_101_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -30962,7 +31271,7 @@ _loop1_100_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_100[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_101[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -30985,7 +31294,7 @@ _loop1_100_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_100[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_101[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31007,13 +31316,12 @@ _loop1_100_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_101: lambda_param_with_default
+// _loop0_102: lambda_param_with_default
 static asdl_seq *
-_loop0_101_rule(Parser *p)
+_loop0_102_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31035,7 +31343,7 @@ _loop0_101_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_101[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop0_102[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -31058,7 +31366,7 @@ _loop0_101_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_101[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_102[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -31075,13 +31383,12 @@ _loop0_101_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_102: lambda_param_with_default
+// _loop1_103: lambda_param_with_default
 static asdl_seq *
-_loop1_102_rule(Parser *p)
+_loop1_103_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31103,7 +31410,7 @@ _loop1_102_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_102[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_103[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -31126,7 +31433,7 @@ _loop1_102_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_102[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_103[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31148,13 +31455,12 @@ _loop1_102_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_103: lambda_param_no_default
+// _loop1_104: lambda_param_no_default
 static asdl_seq *
-_loop1_103_rule(Parser *p)
+_loop1_104_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31176,7 +31482,7 @@ _loop1_103_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_103[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_104[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -31199,7 +31505,7 @@ _loop1_103_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_103[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_104[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31221,13 +31527,12 @@ _loop1_103_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_104: lambda_param_no_default
+// _loop1_105: lambda_param_no_default
 static asdl_seq *
-_loop1_104_rule(Parser *p)
+_loop1_105_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31249,7 +31554,7 @@ _loop1_104_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_104[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_105[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -31272,7 +31577,7 @@ _loop1_104_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_104[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_105[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31294,13 +31599,12 @@ _loop1_104_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_105: lambda_param_no_default
+// _loop0_106: lambda_param_no_default
 static asdl_seq *
-_loop0_105_rule(Parser *p)
+_loop0_106_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31322,7 +31626,7 @@ _loop0_105_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_105[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_106[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -31345,7 +31649,7 @@ _loop0_105_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_105[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_106[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -31362,13 +31666,12 @@ _loop0_105_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_106: lambda_param_with_default
+// _loop1_107: lambda_param_with_default
 static asdl_seq *
-_loop1_106_rule(Parser *p)
+_loop1_107_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31390,7 +31693,7 @@ _loop1_106_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_106[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_107[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -31413,7 +31716,7 @@ _loop1_106_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_106[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_107[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31435,13 +31738,12 @@ _loop1_106_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_107: lambda_param_no_default
+// _loop0_108: lambda_param_no_default
 static asdl_seq *
-_loop0_107_rule(Parser *p)
+_loop0_108_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31463,7 +31765,7 @@ _loop0_107_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_107[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_108[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -31486,7 +31788,7 @@ _loop0_107_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_107[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_108[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -31503,13 +31805,12 @@ _loop0_107_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_108: lambda_param_with_default
+// _loop1_109: lambda_param_with_default
 static asdl_seq *
-_loop1_108_rule(Parser *p)
+_loop1_109_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31531,7 +31832,7 @@ _loop1_108_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_108[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_109[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -31554,7 +31855,7 @@ _loop1_108_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_108[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_109[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31576,13 +31877,12 @@ _loop1_108_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_109: lambda_param_maybe_default
+// _loop0_110: lambda_param_maybe_default
 static asdl_seq *
-_loop0_109_rule(Parser *p)
+_loop0_110_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31604,7 +31904,7 @@ _loop0_109_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_109[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_110[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -31627,7 +31927,7 @@ _loop0_109_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_109[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_110[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -31644,13 +31944,12 @@ _loop0_109_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_110: lambda_param_maybe_default
+// _loop1_111: lambda_param_maybe_default
 static asdl_seq *
-_loop1_110_rule(Parser *p)
+_loop1_111_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31672,7 +31971,7 @@ _loop1_110_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_110[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop1_111[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -31695,7 +31994,7 @@ _loop1_110_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_110[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_111[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31717,13 +32016,12 @@ _loop1_110_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_111: yield_expr | star_expressions
+// _tmp_112: yield_expr | star_expressions
 static void *
-_tmp_111_rule(Parser *p)
+_tmp_112_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31736,18 +32034,18 @@ _tmp_111_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_111[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_112[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_111[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_112[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_111[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_112[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -31755,18 +32053,18 @@ _tmp_111_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_111[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_112[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_111[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_112[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_111[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_112[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -31775,13 +32073,12 @@ _tmp_111_rule(Parser *p)
     return _res;
 }
 
-// _loop0_112: fstring_format_spec
+// _loop0_113: fstring_format_spec
 static asdl_seq *
-_loop0_112_rule(Parser *p)
+_loop0_113_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31803,7 +32100,7 @@ _loop0_112_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_112[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_format_spec"));
+        D(fprintf(stderr, "%*c> _loop0_113[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_format_spec"));
         expr_ty fstring_format_spec_var;
         while (
             (fstring_format_spec_var = fstring_format_spec_rule(p))  // fstring_format_spec
@@ -31826,7 +32123,7 @@ _loop0_112_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_112[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_113[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "fstring_format_spec"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -31843,13 +32140,79 @@ _loop0_112_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_113: (fstring | string)
+// _loop0_114: fstring_middle
 static asdl_seq *
-_loop1_113_rule(Parser *p)
+_loop0_114_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void *_res = NULL;
+    int _mark = p->mark;
+    void **_children = PyMem_Malloc(sizeof(void *));
+    if (!_children) {
+        p->error_indicator = 1;
+        PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    Py_ssize_t _children_capacity = 1;
+    Py_ssize_t _n = 0;
+    { // fstring_middle
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _loop0_114[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_middle"));
+        expr_ty fstring_middle_var;
+        while (
+            (fstring_middle_var = fstring_middle_rule(p))  // fstring_middle
+        )
+        {
+            _res = fstring_middle_var;
+            if (_n == _children_capacity) {
+                _children_capacity *= 2;
+                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
+                if (!_new_children) {
+                    PyMem_Free(_children);
+                    p->error_indicator = 1;
+                    PyErr_NoMemory();
+                    p->level--;
+                    return NULL;
+                }
+                _children = _new_children;
+            }
+            _children[_n++] = _res;
+            _mark = p->mark;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _loop0_114[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "fstring_middle"));
+    }
+    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
+    if (!_seq) {
+        PyMem_Free(_children);
         p->error_indicator = 1;
         PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
+    PyMem_Free(_children);
+    p->level--;
+    return _seq;
+}
+
+// _loop1_115: (fstring | string)
+static asdl_seq *
+_loop1_115_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31871,13 +32234,13 @@ _loop1_113_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_113[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(fstring | string)"));
-        void *_tmp_253_var;
+        D(fprintf(stderr, "%*c> _loop1_115[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(fstring | string)"));
+        void *_tmp_257_var;
         while (
-            (_tmp_253_var = _tmp_253_rule(p))  // fstring | string
+            (_tmp_257_var = _tmp_257_rule(p))  // fstring | string
         )
         {
-            _res = _tmp_253_var;
+            _res = _tmp_257_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -31894,7 +32257,7 @@ _loop1_113_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_113[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_115[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(fstring | string)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -31916,13 +32279,12 @@ _loop1_113_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_114: star_named_expression ',' star_named_expressions?
+// _tmp_116: star_named_expression ',' star_named_expressions?
 static void *
-_tmp_114_rule(Parser *p)
+_tmp_116_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31935,7 +32297,7 @@ _tmp_114_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_114[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expression ',' star_named_expressions?"));
+        D(fprintf(stderr, "%*c> _tmp_116[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expression ',' star_named_expressions?"));
         Token * _literal;
         expr_ty y;
         void *z;
@@ -31947,7 +32309,7 @@ _tmp_114_rule(Parser *p)
             (z = star_named_expressions_rule(p), !p->error_indicator)  // star_named_expressions?
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_114[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_named_expression ',' star_named_expressions?"));
+            D(fprintf(stderr, "%*c+ _tmp_116[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_named_expression ',' star_named_expressions?"));
             _res = _PyPegen_seq_insert_in_front ( p , y , z );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -31957,7 +32319,7 @@ _tmp_114_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_114[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_116[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_named_expression ',' star_named_expressions?"));
     }
     _res = NULL;
@@ -31966,13 +32328,12 @@ _tmp_114_rule(Parser *p)
     return _res;
 }
 
-// _loop0_116: ',' double_starred_kvpair
+// _loop0_118: ',' double_starred_kvpair
 static asdl_seq *
-_loop0_116_rule(Parser *p)
+_loop0_118_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -31994,7 +32355,7 @@ _loop0_116_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_116[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' double_starred_kvpair"));
+        D(fprintf(stderr, "%*c> _loop0_118[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' double_starred_kvpair"));
         Token * _literal;
         KeyValuePair* elem;
         while (
@@ -32026,7 +32387,7 @@ _loop0_116_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_116[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_118[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' double_starred_kvpair"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32043,13 +32404,12 @@ _loop0_116_rule(Parser *p)
     return _seq;
 }
 
-// _gather_115: double_starred_kvpair _loop0_116
+// _gather_117: double_starred_kvpair _loop0_118
 static asdl_seq *
-_gather_115_rule(Parser *p)
+_gather_117_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32057,27 +32417,27 @@ _gather_115_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // double_starred_kvpair _loop0_116
+    { // double_starred_kvpair _loop0_118
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_115[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_116"));
+        D(fprintf(stderr, "%*c> _gather_117[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_118"));
         KeyValuePair* elem;
         asdl_seq * seq;
         if (
             (elem = double_starred_kvpair_rule(p))  // double_starred_kvpair
             &&
-            (seq = _loop0_116_rule(p))  // _loop0_116
+            (seq = _loop0_118_rule(p))  // _loop0_118
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_115[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_116"));
+            D(fprintf(stderr, "%*c+ _gather_117[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_118"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_115[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "double_starred_kvpair _loop0_116"));
+        D(fprintf(stderr, "%*c%s _gather_117[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "double_starred_kvpair _loop0_118"));
     }
     _res = NULL;
   done:
@@ -32085,13 +32445,12 @@ _gather_115_rule(Parser *p)
     return _res;
 }
 
-// _loop1_117: for_if_clause
+// _loop1_119: for_if_clause
 static asdl_seq *
-_loop1_117_rule(Parser *p)
+_loop1_119_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32113,7 +32472,7 @@ _loop1_117_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_117[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "for_if_clause"));
+        D(fprintf(stderr, "%*c> _loop1_119[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "for_if_clause"));
         comprehension_ty for_if_clause_var;
         while (
             (for_if_clause_var = for_if_clause_rule(p))  // for_if_clause
@@ -32136,7 +32495,7 @@ _loop1_117_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_117[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_119[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "for_if_clause"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -32158,13 +32517,12 @@ _loop1_117_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_118: ('if' disjunction)
+// _loop0_120: ('if' disjunction)
 static asdl_seq *
-_loop0_118_rule(Parser *p)
+_loop0_120_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32186,13 +32544,13 @@ _loop0_118_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_118[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('if' disjunction)"));
-        void *_tmp_254_var;
+        D(fprintf(stderr, "%*c> _loop0_120[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('if' disjunction)"));
+        void *_tmp_258_var;
         while (
-            (_tmp_254_var = _tmp_254_rule(p))  // 'if' disjunction
+            (_tmp_258_var = _tmp_258_rule(p))  // 'if' disjunction
         )
         {
-            _res = _tmp_254_var;
+            _res = _tmp_258_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -32209,7 +32567,7 @@ _loop0_118_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_118[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_120[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('if' disjunction)"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32226,13 +32584,12 @@ _loop0_118_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_119: ('if' disjunction)
+// _loop0_121: ('if' disjunction)
 static asdl_seq *
-_loop0_119_rule(Parser *p)
+_loop0_121_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32254,13 +32611,13 @@ _loop0_119_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_119[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('if' disjunction)"));
-        void *_tmp_255_var;
+        D(fprintf(stderr, "%*c> _loop0_121[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "('if' disjunction)"));
+        void *_tmp_259_var;
         while (
-            (_tmp_255_var = _tmp_255_rule(p))  // 'if' disjunction
+            (_tmp_259_var = _tmp_259_rule(p))  // 'if' disjunction
         )
         {
-            _res = _tmp_255_var;
+            _res = _tmp_259_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -32277,7 +32634,7 @@ _loop0_119_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_119[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_121[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "('if' disjunction)"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32294,13 +32651,12 @@ _loop0_119_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_120: assignment_expression | expression !':='
+// _tmp_122: assignment_expression | expression !':='
 static void *
-_tmp_120_rule(Parser *p)
+_tmp_122_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32313,18 +32669,18 @@ _tmp_120_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_120[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
+        D(fprintf(stderr, "%*c> _tmp_122[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
         expr_ty assignment_expression_var;
         if (
             (assignment_expression_var = assignment_expression_rule(p))  // assignment_expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_120[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
+            D(fprintf(stderr, "%*c+ _tmp_122[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
             _res = assignment_expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_120[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_122[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "assignment_expression"));
     }
     { // expression !':='
@@ -32332,7 +32688,7 @@ _tmp_120_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_120[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression !':='"));
+        D(fprintf(stderr, "%*c> _tmp_122[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression !':='"));
         expr_ty expression_var;
         if (
             (expression_var = expression_rule(p))  // expression
@@ -32340,12 +32696,12 @@ _tmp_120_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 53)  // token=':='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_120[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression !':='"));
+            D(fprintf(stderr, "%*c+ _tmp_122[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression !':='"));
             _res = expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_120[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_122[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression !':='"));
     }
     _res = NULL;
@@ -32354,13 +32710,12 @@ _tmp_120_rule(Parser *p)
     return _res;
 }
 
-// _loop0_122: ',' (starred_expression | (assignment_expression | expression !':=') !'=')
+// _loop0_124: ',' (starred_expression | (assignment_expression | expression !':=') !'=')
 static asdl_seq *
-_loop0_122_rule(Parser *p)
+_loop0_124_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32382,13 +32737,13 @@ _loop0_122_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_122[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (starred_expression | (assignment_expression | expression !':=') !'=')"));
+        D(fprintf(stderr, "%*c> _loop0_124[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (starred_expression | (assignment_expression | expression !':=') !'=')"));
         Token * _literal;
         void *elem;
         while (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (elem = _tmp_256_rule(p))  // starred_expression | (assignment_expression | expression !':=') !'='
+            (elem = _tmp_260_rule(p))  // starred_expression | (assignment_expression | expression !':=') !'='
         )
         {
             _res = elem;
@@ -32414,7 +32769,7 @@ _loop0_122_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_122[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_124[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (starred_expression | (assignment_expression | expression !':=') !'=')"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32431,14 +32786,13 @@ _loop0_122_rule(Parser *p)
     return _seq;
 }
 
-// _gather_121:
-//     | (starred_expression | (assignment_expression | expression !':=') !'=') _loop0_122
+// _gather_123:
+//     | (starred_expression | (assignment_expression | expression !':=') !'=') _loop0_124
 static asdl_seq *
-_gather_121_rule(Parser *p)
+_gather_123_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32446,27 +32800,27 @@ _gather_121_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // (starred_expression | (assignment_expression | expression !':=') !'=') _loop0_122
+    { // (starred_expression | (assignment_expression | expression !':=') !'=') _loop0_124
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_121[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_122"));
+        D(fprintf(stderr, "%*c> _gather_123[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_124"));
         void *elem;
         asdl_seq * seq;
         if (
-            (elem = _tmp_256_rule(p))  // starred_expression | (assignment_expression | expression !':=') !'='
+            (elem = _tmp_260_rule(p))  // starred_expression | (assignment_expression | expression !':=') !'='
             &&
-            (seq = _loop0_122_rule(p))  // _loop0_122
+            (seq = _loop0_124_rule(p))  // _loop0_124
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_121[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_122"));
+            D(fprintf(stderr, "%*c+ _gather_123[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_124"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_121[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_122"));
+        D(fprintf(stderr, "%*c%s _gather_123[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_124"));
     }
     _res = NULL;
   done:
@@ -32474,13 +32828,12 @@ _gather_121_rule(Parser *p)
     return _res;
 }
 
-// _tmp_123: ',' kwargs
+// _tmp_125: ',' kwargs
 static void *
-_tmp_123_rule(Parser *p)
+_tmp_125_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32493,7 +32846,7 @@ _tmp_123_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_123[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwargs"));
+        D(fprintf(stderr, "%*c> _tmp_125[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwargs"));
         Token * _literal;
         asdl_seq* k;
         if (
@@ -32502,7 +32855,7 @@ _tmp_123_rule(Parser *p)
             (k = kwargs_rule(p))  // kwargs
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_123[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' kwargs"));
+            D(fprintf(stderr, "%*c+ _tmp_125[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' kwargs"));
             _res = k;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -32512,7 +32865,7 @@ _tmp_123_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_123[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_125[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' kwargs"));
     }
     _res = NULL;
@@ -32521,13 +32874,12 @@ _tmp_123_rule(Parser *p)
     return _res;
 }
 
-// _loop0_125: ',' kwarg_or_starred
+// _loop0_127: ',' kwarg_or_starred
 static asdl_seq *
-_loop0_125_rule(Parser *p)
+_loop0_127_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32549,7 +32901,7 @@ _loop0_125_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_125[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_starred"));
+        D(fprintf(stderr, "%*c> _loop0_127[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_starred"));
         Token * _literal;
         KeywordOrStarred* elem;
         while (
@@ -32581,7 +32933,7 @@ _loop0_125_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_125[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_127[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' kwarg_or_starred"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32598,13 +32950,12 @@ _loop0_125_rule(Parser *p)
     return _seq;
 }
 
-// _gather_124: kwarg_or_starred _loop0_125
+// _gather_126: kwarg_or_starred _loop0_127
 static asdl_seq *
-_gather_124_rule(Parser *p)
+_gather_126_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32612,27 +32963,27 @@ _gather_124_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // kwarg_or_starred _loop0_125
+    { // kwarg_or_starred _loop0_127
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_124[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_125"));
+        D(fprintf(stderr, "%*c> _gather_126[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_127"));
         KeywordOrStarred* elem;
         asdl_seq * seq;
         if (
             (elem = kwarg_or_starred_rule(p))  // kwarg_or_starred
             &&
-            (seq = _loop0_125_rule(p))  // _loop0_125
+            (seq = _loop0_127_rule(p))  // _loop0_127
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_124[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_125"));
+            D(fprintf(stderr, "%*c+ _gather_126[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_127"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_124[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_starred _loop0_125"));
+        D(fprintf(stderr, "%*c%s _gather_126[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_starred _loop0_127"));
     }
     _res = NULL;
   done:
@@ -32640,13 +32991,12 @@ _gather_124_rule(Parser *p)
     return _res;
 }
 
-// _loop0_127: ',' kwarg_or_double_starred
+// _loop0_129: ',' kwarg_or_double_starred
 static asdl_seq *
-_loop0_127_rule(Parser *p)
+_loop0_129_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32668,7 +33018,7 @@ _loop0_127_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_127[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_double_starred"));
+        D(fprintf(stderr, "%*c> _loop0_129[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_double_starred"));
         Token * _literal;
         KeywordOrStarred* elem;
         while (
@@ -32700,7 +33050,7 @@ _loop0_127_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_127[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_129[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' kwarg_or_double_starred"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32717,13 +33067,12 @@ _loop0_127_rule(Parser *p)
     return _seq;
 }
 
-// _gather_126: kwarg_or_double_starred _loop0_127
+// _gather_128: kwarg_or_double_starred _loop0_129
 static asdl_seq *
-_gather_126_rule(Parser *p)
+_gather_128_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32731,27 +33080,27 @@ _gather_126_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // kwarg_or_double_starred _loop0_127
+    { // kwarg_or_double_starred _loop0_129
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_126[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_127"));
+        D(fprintf(stderr, "%*c> _gather_128[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_129"));
         KeywordOrStarred* elem;
         asdl_seq * seq;
         if (
             (elem = kwarg_or_double_starred_rule(p))  // kwarg_or_double_starred
             &&
-            (seq = _loop0_127_rule(p))  // _loop0_127
+            (seq = _loop0_129_rule(p))  // _loop0_129
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_126[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_127"));
+            D(fprintf(stderr, "%*c+ _gather_128[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_129"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_126[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_double_starred _loop0_127"));
+        D(fprintf(stderr, "%*c%s _gather_128[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_double_starred _loop0_129"));
     }
     _res = NULL;
   done:
@@ -32759,13 +33108,12 @@ _gather_126_rule(Parser *p)
     return _res;
 }
 
-// _loop0_129: ',' kwarg_or_starred
+// _loop0_131: ',' kwarg_or_starred
 static asdl_seq *
-_loop0_129_rule(Parser *p)
+_loop0_131_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32787,7 +33135,7 @@ _loop0_129_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_129[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_starred"));
+        D(fprintf(stderr, "%*c> _loop0_131[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_starred"));
         Token * _literal;
         KeywordOrStarred* elem;
         while (
@@ -32819,7 +33167,7 @@ _loop0_129_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_129[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_131[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' kwarg_or_starred"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32836,13 +33184,12 @@ _loop0_129_rule(Parser *p)
     return _seq;
 }
 
-// _gather_128: kwarg_or_starred _loop0_129
+// _gather_130: kwarg_or_starred _loop0_131
 static asdl_seq *
-_gather_128_rule(Parser *p)
+_gather_130_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32850,27 +33197,27 @@ _gather_128_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // kwarg_or_starred _loop0_129
+    { // kwarg_or_starred _loop0_131
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_128[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_129"));
+        D(fprintf(stderr, "%*c> _gather_130[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_131"));
         KeywordOrStarred* elem;
         asdl_seq * seq;
         if (
             (elem = kwarg_or_starred_rule(p))  // kwarg_or_starred
             &&
-            (seq = _loop0_129_rule(p))  // _loop0_129
+            (seq = _loop0_131_rule(p))  // _loop0_131
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_128[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_129"));
+            D(fprintf(stderr, "%*c+ _gather_130[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_starred _loop0_131"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_128[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_starred _loop0_129"));
+        D(fprintf(stderr, "%*c%s _gather_130[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_starred _loop0_131"));
     }
     _res = NULL;
   done:
@@ -32878,13 +33225,12 @@ _gather_128_rule(Parser *p)
     return _res;
 }
 
-// _loop0_131: ',' kwarg_or_double_starred
+// _loop0_133: ',' kwarg_or_double_starred
 static asdl_seq *
-_loop0_131_rule(Parser *p)
+_loop0_133_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32906,7 +33252,7 @@ _loop0_131_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_131[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_double_starred"));
+        D(fprintf(stderr, "%*c> _loop0_133[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' kwarg_or_double_starred"));
         Token * _literal;
         KeywordOrStarred* elem;
         while (
@@ -32938,7 +33284,7 @@ _loop0_131_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_131[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_133[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' kwarg_or_double_starred"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -32955,13 +33301,12 @@ _loop0_131_rule(Parser *p)
     return _seq;
 }
 
-// _gather_130: kwarg_or_double_starred _loop0_131
+// _gather_132: kwarg_or_double_starred _loop0_133
 static asdl_seq *
-_gather_130_rule(Parser *p)
+_gather_132_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -32969,27 +33314,27 @@ _gather_130_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // kwarg_or_double_starred _loop0_131
+    { // kwarg_or_double_starred _loop0_133
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_130[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_131"));
+        D(fprintf(stderr, "%*c> _gather_132[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_133"));
         KeywordOrStarred* elem;
         asdl_seq * seq;
         if (
             (elem = kwarg_or_double_starred_rule(p))  // kwarg_or_double_starred
             &&
-            (seq = _loop0_131_rule(p))  // _loop0_131
+            (seq = _loop0_133_rule(p))  // _loop0_133
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_130[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_131"));
+            D(fprintf(stderr, "%*c+ _gather_132[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwarg_or_double_starred _loop0_133"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_130[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_double_starred _loop0_131"));
+        D(fprintf(stderr, "%*c%s _gather_132[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwarg_or_double_starred _loop0_133"));
     }
     _res = NULL;
   done:
@@ -32997,13 +33342,12 @@ _gather_130_rule(Parser *p)
     return _res;
 }
 
-// _loop0_132: (',' star_target)
+// _loop0_134: (',' star_target)
 static asdl_seq *
-_loop0_132_rule(Parser *p)
+_loop0_134_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33025,13 +33369,13 @@ _loop0_132_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_132[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' star_target)"));
-        void *_tmp_257_var;
+        D(fprintf(stderr, "%*c> _loop0_134[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' star_target)"));
+        void *_tmp_261_var;
         while (
-            (_tmp_257_var = _tmp_257_rule(p))  // ',' star_target
+            (_tmp_261_var = _tmp_261_rule(p))  // ',' star_target
         )
         {
-            _res = _tmp_257_var;
+            _res = _tmp_261_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -33048,7 +33392,7 @@ _loop0_132_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_132[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_134[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(',' star_target)"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33065,13 +33409,12 @@ _loop0_132_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_134: ',' star_target
+// _loop0_136: ',' star_target
 static asdl_seq *
-_loop0_134_rule(Parser *p)
+_loop0_136_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33093,7 +33436,7 @@ _loop0_134_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_134[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_target"));
+        D(fprintf(stderr, "%*c> _loop0_136[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_target"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -33125,7 +33468,7 @@ _loop0_134_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_134[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_136[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' star_target"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33142,13 +33485,12 @@ _loop0_134_rule(Parser *p)
     return _seq;
 }
 
-// _gather_133: star_target _loop0_134
+// _gather_135: star_target _loop0_136
 static asdl_seq *
-_gather_133_rule(Parser *p)
+_gather_135_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33156,27 +33498,27 @@ _gather_133_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // star_target _loop0_134
+    { // star_target _loop0_136
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_133[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_target _loop0_134"));
+        D(fprintf(stderr, "%*c> _gather_135[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_target _loop0_136"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = star_target_rule(p))  // star_target
             &&
-            (seq = _loop0_134_rule(p))  // _loop0_134
+            (seq = _loop0_136_rule(p))  // _loop0_136
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_133[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_target _loop0_134"));
+            D(fprintf(stderr, "%*c+ _gather_135[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_target _loop0_136"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_133[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_target _loop0_134"));
+        D(fprintf(stderr, "%*c%s _gather_135[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_target _loop0_136"));
     }
     _res = NULL;
   done:
@@ -33184,13 +33526,12 @@ _gather_133_rule(Parser *p)
     return _res;
 }
 
-// _loop1_135: (',' star_target)
+// _loop1_137: (',' star_target)
 static asdl_seq *
-_loop1_135_rule(Parser *p)
+_loop1_137_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33212,13 +33553,13 @@ _loop1_135_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_135[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' star_target)"));
-        void *_tmp_258_var;
+        D(fprintf(stderr, "%*c> _loop1_137[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(',' star_target)"));
+        void *_tmp_262_var;
         while (
-            (_tmp_258_var = _tmp_258_rule(p))  // ',' star_target
+            (_tmp_262_var = _tmp_262_rule(p))  // ',' star_target
         )
         {
-            _res = _tmp_258_var;
+            _res = _tmp_262_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -33235,7 +33576,7 @@ _loop1_135_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_135[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_137[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(',' star_target)"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -33257,13 +33598,12 @@ _loop1_135_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_136: !'*' star_target
+// _tmp_138: !'*' star_target
 static void *
-_tmp_136_rule(Parser *p)
+_tmp_138_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33276,7 +33616,7 @@ _tmp_136_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_136[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "!'*' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_138[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "!'*' star_target"));
         expr_ty star_target_var;
         if (
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 16)  // token='*'
@@ -33284,12 +33624,12 @@ _tmp_136_rule(Parser *p)
             (star_target_var = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_136[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "!'*' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_138[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "!'*' star_target"));
             _res = star_target_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_136[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_138[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "!'*' star_target"));
     }
     _res = NULL;
@@ -33298,13 +33638,12 @@ _tmp_136_rule(Parser *p)
     return _res;
 }
 
-// _loop0_138: ',' del_target
+// _loop0_140: ',' del_target
 static asdl_seq *
-_loop0_138_rule(Parser *p)
+_loop0_140_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33326,7 +33665,7 @@ _loop0_138_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_138[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' del_target"));
+        D(fprintf(stderr, "%*c> _loop0_140[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' del_target"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -33358,7 +33697,7 @@ _loop0_138_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_138[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_140[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' del_target"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33375,13 +33714,12 @@ _loop0_138_rule(Parser *p)
     return _seq;
 }
 
-// _gather_137: del_target _loop0_138
+// _gather_139: del_target _loop0_140
 static asdl_seq *
-_gather_137_rule(Parser *p)
+_gather_139_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33389,27 +33727,27 @@ _gather_137_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // del_target _loop0_138
+    { // del_target _loop0_140
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_137[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "del_target _loop0_138"));
+        D(fprintf(stderr, "%*c> _gather_139[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "del_target _loop0_140"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = del_target_rule(p))  // del_target
             &&
-            (seq = _loop0_138_rule(p))  // _loop0_138
+            (seq = _loop0_140_rule(p))  // _loop0_140
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_137[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "del_target _loop0_138"));
+            D(fprintf(stderr, "%*c+ _gather_139[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "del_target _loop0_140"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_137[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "del_target _loop0_138"));
+        D(fprintf(stderr, "%*c%s _gather_139[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "del_target _loop0_140"));
     }
     _res = NULL;
   done:
@@ -33417,13 +33755,12 @@ _gather_137_rule(Parser *p)
     return _res;
 }
 
-// _loop0_140: ',' expression
+// _loop0_142: ',' expression
 static asdl_seq *
-_loop0_140_rule(Parser *p)
+_loop0_142_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33445,7 +33782,7 @@ _loop0_140_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_140[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
+        D(fprintf(stderr, "%*c> _loop0_142[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -33477,7 +33814,7 @@ _loop0_140_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_140[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_142[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' expression"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33494,13 +33831,12 @@ _loop0_140_rule(Parser *p)
     return _seq;
 }
 
-// _gather_139: expression _loop0_140
+// _gather_141: expression _loop0_142
 static asdl_seq *
-_gather_139_rule(Parser *p)
+_gather_141_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33508,27 +33844,27 @@ _gather_139_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // expression _loop0_140
+    { // expression _loop0_142
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_139[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_140"));
+        D(fprintf(stderr, "%*c> _gather_141[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_142"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = expression_rule(p))  // expression
             &&
-            (seq = _loop0_140_rule(p))  // _loop0_140
+            (seq = _loop0_142_rule(p))  // _loop0_142
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_139[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_140"));
+            D(fprintf(stderr, "%*c+ _gather_141[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_142"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_139[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_140"));
+        D(fprintf(stderr, "%*c%s _gather_141[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_142"));
     }
     _res = NULL;
   done:
@@ -33536,13 +33872,12 @@ _gather_139_rule(Parser *p)
     return _res;
 }
 
-// _loop0_142: ',' expression
+// _loop0_144: ',' expression
 static asdl_seq *
-_loop0_142_rule(Parser *p)
+_loop0_144_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33564,7 +33899,7 @@ _loop0_142_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_142[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
+        D(fprintf(stderr, "%*c> _loop0_144[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -33596,7 +33931,7 @@ _loop0_142_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_142[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_144[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' expression"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33613,13 +33948,12 @@ _loop0_142_rule(Parser *p)
     return _seq;
 }
 
-// _gather_141: expression _loop0_142
+// _gather_143: expression _loop0_144
 static asdl_seq *
-_gather_141_rule(Parser *p)
+_gather_143_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33627,27 +33961,27 @@ _gather_141_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // expression _loop0_142
+    { // expression _loop0_144
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_141[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_142"));
+        D(fprintf(stderr, "%*c> _gather_143[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_144"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = expression_rule(p))  // expression
             &&
-            (seq = _loop0_142_rule(p))  // _loop0_142
+            (seq = _loop0_144_rule(p))  // _loop0_144
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_141[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_142"));
+            D(fprintf(stderr, "%*c+ _gather_143[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_144"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_141[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_142"));
+        D(fprintf(stderr, "%*c%s _gather_143[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_144"));
     }
     _res = NULL;
   done:
@@ -33655,13 +33989,12 @@ _gather_141_rule(Parser *p)
     return _res;
 }
 
-// _loop0_144: ',' expression
+// _loop0_146: ',' expression
 static asdl_seq *
-_loop0_144_rule(Parser *p)
+_loop0_146_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33683,7 +34016,7 @@ _loop0_144_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_144[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
+        D(fprintf(stderr, "%*c> _loop0_146[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -33715,7 +34048,7 @@ _loop0_144_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_144[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_146[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' expression"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33732,13 +34065,12 @@ _loop0_144_rule(Parser *p)
     return _seq;
 }
 
-// _gather_143: expression _loop0_144
+// _gather_145: expression _loop0_146
 static asdl_seq *
-_gather_143_rule(Parser *p)
+_gather_145_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33746,27 +34078,27 @@ _gather_143_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // expression _loop0_144
+    { // expression _loop0_146
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_143[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_144"));
+        D(fprintf(stderr, "%*c> _gather_145[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_146"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = expression_rule(p))  // expression
             &&
-            (seq = _loop0_144_rule(p))  // _loop0_144
+            (seq = _loop0_146_rule(p))  // _loop0_146
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_143[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_144"));
+            D(fprintf(stderr, "%*c+ _gather_145[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_146"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_143[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_144"));
+        D(fprintf(stderr, "%*c%s _gather_145[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_146"));
     }
     _res = NULL;
   done:
@@ -33774,13 +34106,12 @@ _gather_143_rule(Parser *p)
     return _res;
 }
 
-// _loop0_146: ',' expression
+// _loop0_148: ',' expression
 static asdl_seq *
-_loop0_146_rule(Parser *p)
+_loop0_148_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33802,7 +34133,7 @@ _loop0_146_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_146[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
+        D(fprintf(stderr, "%*c> _loop0_148[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
         Token * _literal;
         expr_ty elem;
         while (
@@ -33834,7 +34165,7 @@ _loop0_146_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_146[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_148[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' expression"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -33851,13 +34182,12 @@ _loop0_146_rule(Parser *p)
     return _seq;
 }
 
-// _gather_145: expression _loop0_146
+// _gather_147: expression _loop0_148
 static asdl_seq *
-_gather_145_rule(Parser *p)
+_gather_147_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33865,27 +34195,27 @@ _gather_145_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // expression _loop0_146
+    { // expression _loop0_148
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_145[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_146"));
+        D(fprintf(stderr, "%*c> _gather_147[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression _loop0_148"));
         expr_ty elem;
         asdl_seq * seq;
         if (
             (elem = expression_rule(p))  // expression
             &&
-            (seq = _loop0_146_rule(p))  // _loop0_146
+            (seq = _loop0_148_rule(p))  // _loop0_148
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_145[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_146"));
+            D(fprintf(stderr, "%*c+ _gather_147[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression _loop0_148"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_145[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_146"));
+        D(fprintf(stderr, "%*c%s _gather_147[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression _loop0_148"));
     }
     _res = NULL;
   done:
@@ -33893,13 +34223,12 @@ _gather_145_rule(Parser *p)
     return _res;
 }
 
-// _tmp_147: NEWLINE INDENT
+// _tmp_149: NEWLINE INDENT
 static void *
-_tmp_147_rule(Parser *p)
+_tmp_149_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33912,7 +34241,7 @@ _tmp_147_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_147[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NEWLINE INDENT"));
+        D(fprintf(stderr, "%*c> _tmp_149[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NEWLINE INDENT"));
         Token * indent_var;
         Token * newline_var;
         if (
@@ -33921,12 +34250,12 @@ _tmp_147_rule(Parser *p)
             (indent_var = _PyPegen_expect_token(p, INDENT))  // token='INDENT'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_147[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE INDENT"));
+            D(fprintf(stderr, "%*c+ _tmp_149[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE INDENT"));
             _res = _PyPegen_dummy_name(p, newline_var, indent_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_147[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_149[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NEWLINE INDENT"));
     }
     _res = NULL;
@@ -33935,13 +34264,71 @@ _tmp_147_rule(Parser *p)
     return _res;
 }
 
-// _tmp_148: args | expression for_if_clauses
+// _tmp_150:
+//     | (','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs)
+//     | kwargs
 static void *
-_tmp_148_rule(Parser *p)
+_tmp_150_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void * _res = NULL;
+    int _mark = p->mark;
+    { // (','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs)
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_150[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs)"));
+        void *_tmp_263_var;
+        if (
+            (_tmp_263_var = _tmp_263_rule(p))  // ','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_150[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs)"));
+            _res = _tmp_263_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_150[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs)"));
+    }
+    { // kwargs
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_150[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "kwargs"));
+        asdl_seq* kwargs_var;
+        if (
+            (kwargs_var = kwargs_rule(p))  // kwargs
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_150[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "kwargs"));
+            _res = kwargs_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_150[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "kwargs"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _tmp_151: args | expression for_if_clauses
+static void *
+_tmp_151_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -33954,18 +34341,18 @@ _tmp_148_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_148[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "args"));
+        D(fprintf(stderr, "%*c> _tmp_151[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "args"));
         expr_ty args_var;
         if (
             (args_var = args_rule(p))  // args
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_148[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "args"));
+            D(fprintf(stderr, "%*c+ _tmp_151[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "args"));
             _res = args_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_148[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_151[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "args"));
     }
     { // expression for_if_clauses
@@ -33973,7 +34360,7 @@ _tmp_148_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_148[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression for_if_clauses"));
+        D(fprintf(stderr, "%*c> _tmp_151[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression for_if_clauses"));
         expr_ty expression_var;
         asdl_comprehension_seq* for_if_clauses_var;
         if (
@@ -33982,12 +34369,12 @@ _tmp_148_rule(Parser *p)
             (for_if_clauses_var = for_if_clauses_rule(p))  // for_if_clauses
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_148[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression for_if_clauses"));
+            D(fprintf(stderr, "%*c+ _tmp_151[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression for_if_clauses"));
             _res = _PyPegen_dummy_name(p, expression_var, for_if_clauses_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_148[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_151[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression for_if_clauses"));
     }
     _res = NULL;
@@ -33996,13 +34383,12 @@ _tmp_148_rule(Parser *p)
     return _res;
 }
 
-// _tmp_149: args ','
+// _tmp_152: args ','
 static void *
-_tmp_149_rule(Parser *p)
+_tmp_152_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34015,7 +34401,7 @@ _tmp_149_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_149[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "args ','"));
+        D(fprintf(stderr, "%*c> _tmp_152[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "args ','"));
         Token * _literal;
         expr_ty args_var;
         if (
@@ -34024,12 +34410,12 @@ _tmp_149_rule(Parser *p)
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_149[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "args ','"));
+            D(fprintf(stderr, "%*c+ _tmp_152[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "args ','"));
             _res = _PyPegen_dummy_name(p, args_var, _literal);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_149[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_152[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "args ','"));
     }
     _res = NULL;
@@ -34038,13 +34424,12 @@ _tmp_149_rule(Parser *p)
     return _res;
 }
 
-// _tmp_150: ',' | ')'
+// _tmp_153: ',' | ')'
 static void *
-_tmp_150_rule(Parser *p)
+_tmp_153_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34057,18 +34442,18 @@ _tmp_150_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_150[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_153[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_150[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_153[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_150[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_153[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     { // ')'
@@ -34076,18 +34461,18 @@ _tmp_150_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_150[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
+        D(fprintf(stderr, "%*c> _tmp_153[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_150[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
+            D(fprintf(stderr, "%*c+ _tmp_153[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_150[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_153[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "')'"));
     }
     _res = NULL;
@@ -34096,13 +34481,12 @@ _tmp_150_rule(Parser *p)
     return _res;
 }
 
-// _tmp_151: 'True' | 'False' | 'None'
+// _tmp_154: 'True' | 'False' | 'None'
 static void *
-_tmp_151_rule(Parser *p)
+_tmp_154_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34115,18 +34499,18 @@ _tmp_151_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_151[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
+        D(fprintf(stderr, "%*c> _tmp_154[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 601))  // token='True'
+            (_keyword = _PyPegen_expect_token(p, 610))  // token='True'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_151[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
+            D(fprintf(stderr, "%*c+ _tmp_154[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_151[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_154[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'True'"));
     }
     { // 'False'
@@ -34134,18 +34518,18 @@ _tmp_151_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_151[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
+        D(fprintf(stderr, "%*c> _tmp_154[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 603))  // token='False'
+            (_keyword = _PyPegen_expect_token(p, 612))  // token='False'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_151[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
+            D(fprintf(stderr, "%*c+ _tmp_154[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_151[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_154[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'False'"));
     }
     { // 'None'
@@ -34153,18 +34537,18 @@ _tmp_151_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_151[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
+        D(fprintf(stderr, "%*c> _tmp_154[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 602))  // token='None'
+            (_keyword = _PyPegen_expect_token(p, 611))  // token='None'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_151[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
+            D(fprintf(stderr, "%*c+ _tmp_154[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_151[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_154[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'None'"));
     }
     _res = NULL;
@@ -34173,13 +34557,12 @@ _tmp_151_rule(Parser *p)
     return _res;
 }
 
-// _tmp_152: NAME '='
+// _tmp_155: NAME '='
 static void *
-_tmp_152_rule(Parser *p)
+_tmp_155_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34192,7 +34575,7 @@ _tmp_152_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_152[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME '='"));
+        D(fprintf(stderr, "%*c> _tmp_155[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME '='"));
         Token * _literal;
         expr_ty name_var;
         if (
@@ -34201,12 +34584,12 @@ _tmp_152_rule(Parser *p)
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_152[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME '='"));
+            D(fprintf(stderr, "%*c+ _tmp_155[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME '='"));
             _res = _PyPegen_dummy_name(p, name_var, _literal);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_152[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_155[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME '='"));
     }
     _res = NULL;
@@ -34215,13 +34598,12 @@ _tmp_152_rule(Parser *p)
     return _res;
 }
 
-// _tmp_153: NAME STRING | SOFT_KEYWORD
+// _tmp_156: NAME STRING | SOFT_KEYWORD
 static void *
-_tmp_153_rule(Parser *p)
+_tmp_156_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34234,7 +34616,7 @@ _tmp_153_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_153[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME STRING"));
+        D(fprintf(stderr, "%*c> _tmp_156[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NAME STRING"));
         expr_ty name_var;
         expr_ty string_var;
         if (
@@ -34243,12 +34625,12 @@ _tmp_153_rule(Parser *p)
             (string_var = _PyPegen_string_token(p))  // STRING
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_153[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME STRING"));
+            D(fprintf(stderr, "%*c+ _tmp_156[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NAME STRING"));
             _res = _PyPegen_dummy_name(p, name_var, string_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_153[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_156[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NAME STRING"));
     }
     { // SOFT_KEYWORD
@@ -34256,18 +34638,18 @@ _tmp_153_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_153[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "SOFT_KEYWORD"));
+        D(fprintf(stderr, "%*c> _tmp_156[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "SOFT_KEYWORD"));
         expr_ty soft_keyword_var;
         if (
             (soft_keyword_var = _PyPegen_soft_keyword_token(p))  // SOFT_KEYWORD
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_153[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "SOFT_KEYWORD"));
+            D(fprintf(stderr, "%*c+ _tmp_156[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "SOFT_KEYWORD"));
             _res = soft_keyword_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_153[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_156[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "SOFT_KEYWORD"));
     }
     _res = NULL;
@@ -34276,13 +34658,12 @@ _tmp_153_rule(Parser *p)
     return _res;
 }
 
-// _tmp_154: 'else' | ':'
+// _tmp_157: 'else' | ':'
 static void *
-_tmp_154_rule(Parser *p)
+_tmp_157_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34295,18 +34676,18 @@ _tmp_154_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_154[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'else'"));
+        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'else'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 645))  // token='else'
+            (_keyword = _PyPegen_expect_token(p, 661))  // token='else'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_154[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'else'"));
+            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'else'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_154[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'else'"));
     }
     { // ':'
@@ -34314,18 +34695,18 @@ _tmp_154_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_154[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_154[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_154[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     _res = NULL;
@@ -34334,71 +34715,12 @@ _tmp_154_rule(Parser *p)
     return _res;
 }
 
-// _tmp_155: FSTRING_MIDDLE | fstring_replacement_field
-static void *
-_tmp_155_rule(Parser *p)
-{
-    if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
-    }
-    if (p->error_indicator) {
-        p->level--;
-        return NULL;
-    }
-    void * _res = NULL;
-    int _mark = p->mark;
-    { // FSTRING_MIDDLE
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> _tmp_155[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "FSTRING_MIDDLE"));
-        Token * fstring_middle_var;
-        if (
-            (fstring_middle_var = _PyPegen_expect_token(p, FSTRING_MIDDLE))  // token='FSTRING_MIDDLE'
-        )
-        {
-            D(fprintf(stderr, "%*c+ _tmp_155[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "FSTRING_MIDDLE"));
-            _res = fstring_middle_var;
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_155[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "FSTRING_MIDDLE"));
-    }
-    { // fstring_replacement_field
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> _tmp_155[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_replacement_field"));
-        expr_ty fstring_replacement_field_var;
-        if (
-            (fstring_replacement_field_var = fstring_replacement_field_rule(p))  // fstring_replacement_field
-        )
-        {
-            D(fprintf(stderr, "%*c+ _tmp_155[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "fstring_replacement_field"));
-            _res = fstring_replacement_field_var;
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_155[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "fstring_replacement_field"));
-    }
-    _res = NULL;
-  done:
-    p->level--;
-    return _res;
-}
-
-// _tmp_156: '=' | ':='
+// _tmp_158: '=' | ':='
 static void *
-_tmp_156_rule(Parser *p)
+_tmp_158_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34411,18 +34733,18 @@ _tmp_156_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_156[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
+        D(fprintf(stderr, "%*c> _tmp_158[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_156[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
+            D(fprintf(stderr, "%*c+ _tmp_158[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_156[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_158[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'='"));
     }
     { // ':='
@@ -34430,18 +34752,18 @@ _tmp_156_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_156[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':='"));
+        D(fprintf(stderr, "%*c> _tmp_158[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 53))  // token=':='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_156[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':='"));
+            D(fprintf(stderr, "%*c+ _tmp_158[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_156[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_158[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':='"));
     }
     _res = NULL;
@@ -34450,13 +34772,12 @@ _tmp_156_rule(Parser *p)
     return _res;
 }
 
-// _tmp_157: list | tuple | genexp | 'True' | 'None' | 'False'
+// _tmp_159: list | tuple | genexp | 'True' | 'None' | 'False'
 static void *
-_tmp_157_rule(Parser *p)
+_tmp_159_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34469,18 +34790,18 @@ _tmp_157_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "list"));
+        D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "list"));
         expr_ty list_var;
         if (
             (list_var = list_rule(p))  // list
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "list"));
+            D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "list"));
             _res = list_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_159[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "list"));
     }
     { // tuple
@@ -34488,18 +34809,18 @@ _tmp_157_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "tuple"));
+        D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "tuple"));
         expr_ty tuple_var;
         if (
             (tuple_var = tuple_rule(p))  // tuple
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "tuple"));
+            D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "tuple"));
             _res = tuple_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_159[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "tuple"));
     }
     { // genexp
@@ -34507,18 +34828,18 @@ _tmp_157_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "genexp"));
+        D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "genexp"));
         expr_ty genexp_var;
         if (
             (genexp_var = genexp_rule(p))  // genexp
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "genexp"));
+            D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "genexp"));
             _res = genexp_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_159[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "genexp"));
     }
     { // 'True'
@@ -34526,18 +34847,18 @@ _tmp_157_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
+        D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'True'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 601))  // token='True'
+            (_keyword = _PyPegen_expect_token(p, 610))  // token='True'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
+            D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'True'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_159[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'True'"));
     }
     { // 'None'
@@ -34545,18 +34866,18 @@ _tmp_157_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
+        D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'None'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 602))  // token='None'
+            (_keyword = _PyPegen_expect_token(p, 611))  // token='None'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
+            D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'None'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_159[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'None'"));
     }
     { // 'False'
@@ -34564,18 +34885,18 @@ _tmp_157_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_157[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
+        D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'False'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 603))  // token='False'
+            (_keyword = _PyPegen_expect_token(p, 612))  // token='False'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_157[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
+            D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'False'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_157[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_159[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'False'"));
     }
     _res = NULL;
@@ -34584,13 +34905,12 @@ _tmp_157_rule(Parser *p)
     return _res;
 }
 
-// _tmp_158: '=' | ':='
+// _tmp_160: '=' | ':='
 static void *
-_tmp_158_rule(Parser *p)
+_tmp_160_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34603,18 +34923,18 @@ _tmp_158_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_158[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
+        D(fprintf(stderr, "%*c> _tmp_160[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_158[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
+            D(fprintf(stderr, "%*c+ _tmp_160[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_158[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_160[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'='"));
     }
     { // ':='
@@ -34622,18 +34942,18 @@ _tmp_158_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_158[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':='"));
+        D(fprintf(stderr, "%*c> _tmp_160[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 53))  // token=':='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_158[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':='"));
+            D(fprintf(stderr, "%*c+ _tmp_160[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_158[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_160[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':='"));
     }
     _res = NULL;
@@ -34642,13 +34962,12 @@ _tmp_158_rule(Parser *p)
     return _res;
 }
 
-// _loop0_159: star_named_expressions
+// _loop0_161: star_named_expressions
 static asdl_seq *
-_loop0_159_rule(Parser *p)
+_loop0_161_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34670,7 +34989,7 @@ _loop0_159_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expressions"));
+        D(fprintf(stderr, "%*c> _loop0_161[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_named_expressions"));
         asdl_expr_seq* star_named_expressions_var;
         while (
             (star_named_expressions_var = star_named_expressions_rule(p))  // star_named_expressions
@@ -34693,7 +35012,7 @@ _loop0_159_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_159[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_161[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_named_expressions"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -34710,13 +35029,12 @@ _loop0_159_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_160: (star_targets '=')
+// _loop0_162: (star_targets '=')
 static asdl_seq *
-_loop0_160_rule(Parser *p)
+_loop0_162_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34738,13 +35056,13 @@ _loop0_160_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_160[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(star_targets '=')"));
-        void *_tmp_259_var;
+        D(fprintf(stderr, "%*c> _loop0_162[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(star_targets '=')"));
+        void *_tmp_264_var;
         while (
-            (_tmp_259_var = _tmp_259_rule(p))  // star_targets '='
+            (_tmp_264_var = _tmp_264_rule(p))  // star_targets '='
         )
         {
-            _res = _tmp_259_var;
+            _res = _tmp_264_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -34761,7 +35079,7 @@ _loop0_160_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_160[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_162[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(star_targets '=')"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -34778,13 +35096,12 @@ _loop0_160_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_161: (star_targets '=')
+// _loop0_163: (star_targets '=')
 static asdl_seq *
-_loop0_161_rule(Parser *p)
+_loop0_163_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34806,13 +35123,13 @@ _loop0_161_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_161[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(star_targets '=')"));
-        void *_tmp_260_var;
+        D(fprintf(stderr, "%*c> _loop0_163[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(star_targets '=')"));
+        void *_tmp_265_var;
         while (
-            (_tmp_260_var = _tmp_260_rule(p))  // star_targets '='
+            (_tmp_265_var = _tmp_265_rule(p))  // star_targets '='
         )
         {
-            _res = _tmp_260_var;
+            _res = _tmp_265_var;
             if (_n == _children_capacity) {
                 _children_capacity *= 2;
                 void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
@@ -34829,7 +35146,7 @@ _loop0_161_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_161[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_163[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(star_targets '=')"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -34846,13 +35163,12 @@ _loop0_161_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_162: yield_expr | star_expressions
+// _tmp_164: yield_expr | star_expressions
 static void *
-_tmp_162_rule(Parser *p)
+_tmp_164_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34865,18 +35181,18 @@ _tmp_162_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_162[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_164[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_162[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_164[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_162[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_164[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -34884,18 +35200,18 @@ _tmp_162_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_162[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_164[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_162[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_164[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_162[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_164[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -34904,13 +35220,12 @@ _tmp_162_rule(Parser *p)
     return _res;
 }
 
-// _tmp_163: '[' | '(' | '{'
+// _tmp_165: '[' | '(' | '{'
 static void *
-_tmp_163_rule(Parser *p)
+_tmp_165_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -34923,18 +35238,18 @@ _tmp_163_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_163[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'['"));
+        D(fprintf(stderr, "%*c> _tmp_165[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'['"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 9))  // token='['
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_163[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'['"));
+            D(fprintf(stderr, "%*c+ _tmp_165[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'['"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_163[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_165[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'['"));
     }
     { // '('
@@ -34942,18 +35257,18 @@ _tmp_163_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_163[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'('"));
+        D(fprintf(stderr, "%*c> _tmp_165[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'('"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_163[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'('"));
+            D(fprintf(stderr, "%*c+ _tmp_165[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'('"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_163[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_165[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'('"));
     }
     { // '{'
@@ -34961,18 +35276,18 @@ _tmp_163_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_163[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{'"));
+        D(fprintf(stderr, "%*c> _tmp_165[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_163[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{'"));
+            D(fprintf(stderr, "%*c+ _tmp_165[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_163[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_165[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'{'"));
     }
     _res = NULL;
@@ -34981,13 +35296,12 @@ _tmp_163_rule(Parser *p)
     return _res;
 }
 
-// _tmp_164: '[' | '{'
+// _tmp_166: '[' | '{'
 static void *
-_tmp_164_rule(Parser *p)
+_tmp_166_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35000,18 +35314,18 @@ _tmp_164_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_164[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'['"));
+        D(fprintf(stderr, "%*c> _tmp_166[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'['"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 9))  // token='['
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_164[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'['"));
+            D(fprintf(stderr, "%*c+ _tmp_166[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'['"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_164[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_166[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'['"));
     }
     { // '{'
@@ -35019,18 +35333,18 @@ _tmp_164_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_164[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{'"));
+        D(fprintf(stderr, "%*c> _tmp_166[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_164[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{'"));
+            D(fprintf(stderr, "%*c+ _tmp_166[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_164[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_166[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'{'"));
     }
     _res = NULL;
@@ -35039,13 +35353,12 @@ _tmp_164_rule(Parser *p)
     return _res;
 }
 
-// _tmp_165: '[' | '{'
+// _tmp_167: '[' | '{'
 static void *
-_tmp_165_rule(Parser *p)
+_tmp_167_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35058,18 +35371,18 @@ _tmp_165_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_165[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'['"));
+        D(fprintf(stderr, "%*c> _tmp_167[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'['"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 9))  // token='['
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_165[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'['"));
+            D(fprintf(stderr, "%*c+ _tmp_167[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'['"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_165[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_167[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'['"));
     }
     { // '{'
@@ -35077,18 +35390,18 @@ _tmp_165_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_165[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{'"));
+        D(fprintf(stderr, "%*c> _tmp_167[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'{'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 25))  // token='{'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_165[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{'"));
+            D(fprintf(stderr, "%*c+ _tmp_167[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'{'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_165[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_167[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'{'"));
     }
     _res = NULL;
@@ -35097,13 +35410,12 @@ _tmp_165_rule(Parser *p)
     return _res;
 }
 
-// _tmp_166: slash_no_default | slash_with_default
+// _tmp_168: slash_no_default | slash_with_default
 static void *
-_tmp_166_rule(Parser *p)
+_tmp_168_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35116,18 +35428,18 @@ _tmp_166_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_166[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_168[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
         asdl_arg_seq* slash_no_default_var;
         if (
             (slash_no_default_var = slash_no_default_rule(p))  // slash_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_166[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_168[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
             _res = slash_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_166[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_168[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "slash_no_default"));
     }
     { // slash_with_default
@@ -35135,18 +35447,18 @@ _tmp_166_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_166[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
+        D(fprintf(stderr, "%*c> _tmp_168[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
         SlashWithDefault* slash_with_default_var;
         if (
             (slash_with_default_var = slash_with_default_rule(p))  // slash_with_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_166[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
+            D(fprintf(stderr, "%*c+ _tmp_168[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
             _res = slash_with_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_166[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_168[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "slash_with_default"));
     }
     _res = NULL;
@@ -35155,13 +35467,12 @@ _tmp_166_rule(Parser *p)
     return _res;
 }
 
-// _loop0_167: param_maybe_default
+// _loop0_169: param_maybe_default
 static asdl_seq *
-_loop0_167_rule(Parser *p)
+_loop0_169_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35183,7 +35494,7 @@ _loop0_167_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_167[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_169[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -35206,7 +35517,7 @@ _loop0_167_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_167[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_169[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -35223,13 +35534,12 @@ _loop0_167_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_168: param_no_default
+// _loop0_170: param_no_default
 static asdl_seq *
-_loop0_168_rule(Parser *p)
+_loop0_170_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35251,7 +35561,7 @@ _loop0_168_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_168[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_170[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -35274,7 +35584,7 @@ _loop0_168_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_168[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_170[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -35291,13 +35601,12 @@ _loop0_168_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_169: param_no_default
+// _loop0_171: param_no_default
 static asdl_seq *
-_loop0_169_rule(Parser *p)
+_loop0_171_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35319,7 +35628,7 @@ _loop0_169_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_169[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_171[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -35342,7 +35651,7 @@ _loop0_169_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_169[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_171[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -35359,13 +35668,12 @@ _loop0_169_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_170: param_no_default
+// _loop1_172: param_no_default
 static asdl_seq *
-_loop1_170_rule(Parser *p)
+_loop1_172_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35387,7 +35695,7 @@ _loop1_170_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_170[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _loop1_172[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         while (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
@@ -35410,7 +35718,7 @@ _loop1_170_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_170[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_172[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -35432,13 +35740,12 @@ _loop1_170_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_171: slash_no_default | slash_with_default
+// _tmp_173: slash_no_default | slash_with_default
 static void *
-_tmp_171_rule(Parser *p)
+_tmp_173_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35451,18 +35758,18 @@ _tmp_171_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_171[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_173[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
         asdl_arg_seq* slash_no_default_var;
         if (
             (slash_no_default_var = slash_no_default_rule(p))  // slash_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_171[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_173[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_no_default"));
             _res = slash_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_171[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_173[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "slash_no_default"));
     }
     { // slash_with_default
@@ -35470,18 +35777,18 @@ _tmp_171_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_171[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
+        D(fprintf(stderr, "%*c> _tmp_173[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
         SlashWithDefault* slash_with_default_var;
         if (
             (slash_with_default_var = slash_with_default_rule(p))  // slash_with_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_171[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
+            D(fprintf(stderr, "%*c+ _tmp_173[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slash_with_default"));
             _res = slash_with_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_171[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_173[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "slash_with_default"));
     }
     _res = NULL;
@@ -35490,13 +35797,12 @@ _tmp_171_rule(Parser *p)
     return _res;
 }
 
-// _loop0_172: param_maybe_default
+// _loop0_174: param_maybe_default
 static asdl_seq *
-_loop0_172_rule(Parser *p)
+_loop0_174_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35518,7 +35824,7 @@ _loop0_172_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_172[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_174[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -35541,7 +35847,7 @@ _loop0_172_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_172[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_174[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -35558,13 +35864,12 @@ _loop0_172_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_173: ',' | param_no_default
+// _tmp_175: ',' | param_no_default
 static void *
-_tmp_173_rule(Parser *p)
+_tmp_175_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35577,18 +35882,18 @@ _tmp_173_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_173[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_175[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_173[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_175[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_173[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_175[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     { // param_no_default
@@ -35596,18 +35901,18 @@ _tmp_173_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_173[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_175[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         if (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_173[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_175[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_no_default"));
             _res = param_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_173[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_175[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     _res = NULL;
@@ -35616,13 +35921,12 @@ _tmp_173_rule(Parser *p)
     return _res;
 }
 
-// _loop0_174: param_maybe_default
+// _loop0_176: param_maybe_default
 static asdl_seq *
-_loop0_174_rule(Parser *p)
+_loop0_176_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35644,7 +35948,7 @@ _loop0_174_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_174[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_176[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -35667,7 +35971,7 @@ _loop0_174_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_174[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_176[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -35684,13 +35988,12 @@ _loop0_174_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_175: param_maybe_default
+// _loop1_177: param_maybe_default
 static asdl_seq *
-_loop1_175_rule(Parser *p)
+_loop1_177_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35712,7 +36015,7 @@ _loop1_175_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_175[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop1_177[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -35735,7 +36038,7 @@ _loop1_175_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_175[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_177[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -35757,13 +36060,12 @@ _loop1_175_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_176: ')' | ','
+// _tmp_178: ')' | ','
 static void *
-_tmp_176_rule(Parser *p)
+_tmp_178_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35776,18 +36078,18 @@ _tmp_176_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_176[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
+        D(fprintf(stderr, "%*c> _tmp_178[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_176[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
+            D(fprintf(stderr, "%*c+ _tmp_178[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_176[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_178[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "')'"));
     }
     { // ','
@@ -35795,18 +36097,18 @@ _tmp_176_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_176[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_178[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_176[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_178[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_176[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_178[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -35815,13 +36117,12 @@ _tmp_176_rule(Parser *p)
     return _res;
 }
 
-// _tmp_177: ')' | ',' (')' | '**')
+// _tmp_179: ')' | ',' (')' | '**')
 static void *
-_tmp_177_rule(Parser *p)
+_tmp_179_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35834,18 +36135,18 @@ _tmp_177_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_177[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
+        D(fprintf(stderr, "%*c> _tmp_179[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_177[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
+            D(fprintf(stderr, "%*c+ _tmp_179[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_177[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_179[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "')'"));
     }
     { // ',' (')' | '**')
@@ -35853,21 +36154,21 @@ _tmp_177_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_177[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (')' | '**')"));
+        D(fprintf(stderr, "%*c> _tmp_179[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (')' | '**')"));
         Token * _literal;
-        void *_tmp_261_var;
+        void *_tmp_266_var;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (_tmp_261_var = _tmp_261_rule(p))  // ')' | '**'
+            (_tmp_266_var = _tmp_266_rule(p))  // ')' | '**'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_177[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' (')' | '**')"));
-            _res = _PyPegen_dummy_name(p, _literal, _tmp_261_var);
+            D(fprintf(stderr, "%*c+ _tmp_179[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' (')' | '**')"));
+            _res = _PyPegen_dummy_name(p, _literal, _tmp_266_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_177[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_179[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (')' | '**')"));
     }
     _res = NULL;
@@ -35876,13 +36177,12 @@ _tmp_177_rule(Parser *p)
     return _res;
 }
 
-// _tmp_178: param_no_default | ','
+// _tmp_180: param_no_default | ','
 static void *
-_tmp_178_rule(Parser *p)
+_tmp_180_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35895,18 +36195,18 @@ _tmp_178_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_178[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_180[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         if (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_178[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_180[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_no_default"));
             _res = param_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_178[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_180[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     { // ','
@@ -35914,18 +36214,18 @@ _tmp_178_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_178[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_180[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_178[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_180[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_178[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_180[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -35934,13 +36234,12 @@ _tmp_178_rule(Parser *p)
     return _res;
 }
 
-// _loop0_179: param_maybe_default
+// _loop0_181: param_maybe_default
 static asdl_seq *
-_loop0_179_rule(Parser *p)
+_loop0_181_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -35962,7 +36261,7 @@ _loop0_179_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_179[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_181[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_maybe_default"));
         NameDefaultPair* param_maybe_default_var;
         while (
             (param_maybe_default_var = param_maybe_default_rule(p))  // param_maybe_default
@@ -35985,7 +36284,7 @@ _loop0_179_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_179[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_181[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36002,13 +36301,12 @@ _loop0_179_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_180: param_no_default | ','
+// _tmp_182: param_no_default | ','
 static void *
-_tmp_180_rule(Parser *p)
+_tmp_182_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36021,18 +36319,18 @@ _tmp_180_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_180[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_182[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_no_default"));
         arg_ty param_no_default_var;
         if (
             (param_no_default_var = param_no_default_rule(p))  // param_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_180[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_182[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "param_no_default"));
             _res = param_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_180[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_182[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_no_default"));
     }
     { // ','
@@ -36040,18 +36338,18 @@ _tmp_180_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_180[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_182[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_180[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_182[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_180[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_182[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -36060,13 +36358,12 @@ _tmp_180_rule(Parser *p)
     return _res;
 }
 
-// _tmp_181: '*' | '**' | '/'
+// _tmp_183: '*' | '**' | '/'
 static void *
-_tmp_181_rule(Parser *p)
+_tmp_183_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36079,18 +36376,18 @@ _tmp_181_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_181[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*'"));
+        D(fprintf(stderr, "%*c> _tmp_183[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_181[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*'"));
+            D(fprintf(stderr, "%*c+ _tmp_183[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_181[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_183[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'*'"));
     }
     { // '**'
@@ -36098,18 +36395,18 @@ _tmp_181_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_181[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
+        D(fprintf(stderr, "%*c> _tmp_183[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 35))  // token='**'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_181[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
+            D(fprintf(stderr, "%*c+ _tmp_183[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_181[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_183[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'**'"));
     }
     { // '/'
@@ -36117,18 +36414,18 @@ _tmp_181_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_181[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'/'"));
+        D(fprintf(stderr, "%*c> _tmp_183[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'/'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_181[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'/'"));
+            D(fprintf(stderr, "%*c+ _tmp_183[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'/'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_181[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_183[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'/'"));
     }
     _res = NULL;
@@ -36137,13 +36434,12 @@ _tmp_181_rule(Parser *p)
     return _res;
 }
 
-// _loop1_182: param_with_default
+// _loop1_184: param_with_default
 static asdl_seq *
-_loop1_182_rule(Parser *p)
+_loop1_184_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36165,7 +36461,7 @@ _loop1_182_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_182[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_184[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "param_with_default"));
         NameDefaultPair* param_with_default_var;
         while (
             (param_with_default_var = param_with_default_rule(p))  // param_with_default
@@ -36188,7 +36484,7 @@ _loop1_182_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_182[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_184[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -36210,13 +36506,12 @@ _loop1_182_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_183: lambda_slash_no_default | lambda_slash_with_default
+// _tmp_185: lambda_slash_no_default | lambda_slash_with_default
 static void *
-_tmp_183_rule(Parser *p)
+_tmp_185_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36229,18 +36524,18 @@ _tmp_183_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_183[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_185[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
         asdl_arg_seq* lambda_slash_no_default_var;
         if (
             (lambda_slash_no_default_var = lambda_slash_no_default_rule(p))  // lambda_slash_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_183[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_185[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
             _res = lambda_slash_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_183[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_185[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_slash_no_default"));
     }
     { // lambda_slash_with_default
@@ -36248,18 +36543,18 @@ _tmp_183_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_183[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
+        D(fprintf(stderr, "%*c> _tmp_185[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
         SlashWithDefault* lambda_slash_with_default_var;
         if (
             (lambda_slash_with_default_var = lambda_slash_with_default_rule(p))  // lambda_slash_with_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_183[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
+            D(fprintf(stderr, "%*c+ _tmp_185[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
             _res = lambda_slash_with_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_183[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_185[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_slash_with_default"));
     }
     _res = NULL;
@@ -36268,13 +36563,12 @@ _tmp_183_rule(Parser *p)
     return _res;
 }
 
-// _loop0_184: lambda_param_maybe_default
+// _loop0_186: lambda_param_maybe_default
 static asdl_seq *
-_loop0_184_rule(Parser *p)
+_loop0_186_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36296,7 +36590,7 @@ _loop0_184_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_184[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_186[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -36319,7 +36613,7 @@ _loop0_184_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_184[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_186[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36336,13 +36630,12 @@ _loop0_184_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_185: lambda_param_no_default
+// _loop0_187: lambda_param_no_default
 static asdl_seq *
-_loop0_185_rule(Parser *p)
+_loop0_187_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36364,7 +36657,7 @@ _loop0_185_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_185[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_187[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -36387,7 +36680,7 @@ _loop0_185_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_185[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_187[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36404,13 +36697,12 @@ _loop0_185_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_186: lambda_param_no_default
+// _loop0_188: lambda_param_no_default
 static asdl_seq *
-_loop0_186_rule(Parser *p)
+_loop0_188_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36432,7 +36724,7 @@ _loop0_186_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_186[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _loop0_188[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         while (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
@@ -36455,7 +36747,7 @@ _loop0_186_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_186[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_188[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36472,13 +36764,12 @@ _loop0_186_rule(Parser *p)
     return _seq;
 }
 
-// _loop0_188: ',' lambda_param
+// _loop0_190: ',' lambda_param
 static asdl_seq *
-_loop0_188_rule(Parser *p)
+_loop0_190_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36500,7 +36791,7 @@ _loop0_188_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_188[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' lambda_param"));
+        D(fprintf(stderr, "%*c> _loop0_190[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' lambda_param"));
         Token * _literal;
         arg_ty elem;
         while (
@@ -36532,7 +36823,7 @@ _loop0_188_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_188[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_190[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' lambda_param"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36549,13 +36840,12 @@ _loop0_188_rule(Parser *p)
     return _seq;
 }
 
-// _gather_187: lambda_param _loop0_188
+// _gather_189: lambda_param _loop0_190
 static asdl_seq *
-_gather_187_rule(Parser *p)
+_gather_189_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36563,27 +36853,27 @@ _gather_187_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // lambda_param _loop0_188
+    { // lambda_param _loop0_190
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_187[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param _loop0_188"));
+        D(fprintf(stderr, "%*c> _gather_189[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param _loop0_190"));
         arg_ty elem;
         asdl_seq * seq;
         if (
             (elem = lambda_param_rule(p))  // lambda_param
             &&
-            (seq = _loop0_188_rule(p))  // _loop0_188
+            (seq = _loop0_190_rule(p))  // _loop0_190
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_187[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param _loop0_188"));
+            D(fprintf(stderr, "%*c+ _gather_189[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param _loop0_190"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_187[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param _loop0_188"));
+        D(fprintf(stderr, "%*c%s _gather_189[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param _loop0_190"));
     }
     _res = NULL;
   done:
@@ -36591,13 +36881,12 @@ _gather_187_rule(Parser *p)
     return _res;
 }
 
-// _tmp_189: lambda_slash_no_default | lambda_slash_with_default
+// _tmp_191: lambda_slash_no_default | lambda_slash_with_default
 static void *
-_tmp_189_rule(Parser *p)
+_tmp_191_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36610,18 +36899,18 @@ _tmp_189_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_189[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_191[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
         asdl_arg_seq* lambda_slash_no_default_var;
         if (
             (lambda_slash_no_default_var = lambda_slash_no_default_rule(p))  // lambda_slash_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_189[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_191[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_no_default"));
             _res = lambda_slash_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_189[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_191[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_slash_no_default"));
     }
     { // lambda_slash_with_default
@@ -36629,18 +36918,18 @@ _tmp_189_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_189[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
+        D(fprintf(stderr, "%*c> _tmp_191[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
         SlashWithDefault* lambda_slash_with_default_var;
         if (
             (lambda_slash_with_default_var = lambda_slash_with_default_rule(p))  // lambda_slash_with_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_189[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
+            D(fprintf(stderr, "%*c+ _tmp_191[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_slash_with_default"));
             _res = lambda_slash_with_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_189[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_191[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_slash_with_default"));
     }
     _res = NULL;
@@ -36649,13 +36938,12 @@ _tmp_189_rule(Parser *p)
     return _res;
 }
 
-// _loop0_190: lambda_param_maybe_default
+// _loop0_192: lambda_param_maybe_default
 static asdl_seq *
-_loop0_190_rule(Parser *p)
+_loop0_192_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36677,7 +36965,7 @@ _loop0_190_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_190[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_192[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -36700,7 +36988,7 @@ _loop0_190_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_190[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_192[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36717,13 +37005,12 @@ _loop0_190_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_191: ',' | lambda_param_no_default
+// _tmp_193: ',' | lambda_param_no_default
 static void *
-_tmp_191_rule(Parser *p)
+_tmp_193_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36736,18 +37023,18 @@ _tmp_191_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_191[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_193[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_191[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_193[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_191[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_193[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     { // lambda_param_no_default
@@ -36755,18 +37042,18 @@ _tmp_191_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_191[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_193[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         if (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_191[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_193[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
             _res = lambda_param_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_191[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_193[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     _res = NULL;
@@ -36775,13 +37062,12 @@ _tmp_191_rule(Parser *p)
     return _res;
 }
 
-// _loop0_192: lambda_param_maybe_default
+// _loop0_194: lambda_param_maybe_default
 static asdl_seq *
-_loop0_192_rule(Parser *p)
+_loop0_194_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36803,7 +37089,7 @@ _loop0_192_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_192[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_194[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -36826,7 +37112,7 @@ _loop0_192_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_192[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_194[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -36843,13 +37129,12 @@ _loop0_192_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_193: lambda_param_maybe_default
+// _loop1_195: lambda_param_maybe_default
 static asdl_seq *
-_loop1_193_rule(Parser *p)
+_loop1_195_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36871,7 +37156,7 @@ _loop1_193_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_193[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop1_195[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -36894,7 +37179,7 @@ _loop1_193_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_193[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_195[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -36916,13 +37201,12 @@ _loop1_193_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_194: lambda_param_with_default
+// _loop1_196: lambda_param_with_default
 static asdl_seq *
-_loop1_194_rule(Parser *p)
+_loop1_196_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -36944,7 +37228,7 @@ _loop1_194_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_194[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
+        D(fprintf(stderr, "%*c> _loop1_196[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_with_default"));
         NameDefaultPair* lambda_param_with_default_var;
         while (
             (lambda_param_with_default_var = lambda_param_with_default_rule(p))  // lambda_param_with_default
@@ -36967,7 +37251,7 @@ _loop1_194_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_194[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_196[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_with_default"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -36989,13 +37273,12 @@ _loop1_194_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_195: ':' | ',' (':' | '**')
+// _tmp_197: ':' | ',' (':' | '**')
 static void *
-_tmp_195_rule(Parser *p)
+_tmp_197_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37008,18 +37291,18 @@ _tmp_195_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_195[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_197[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_195[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_197[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_195[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_197[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     { // ',' (':' | '**')
@@ -37027,21 +37310,21 @@ _tmp_195_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_195[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (':' | '**')"));
+        D(fprintf(stderr, "%*c> _tmp_197[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (':' | '**')"));
         Token * _literal;
-        void *_tmp_262_var;
+        void *_tmp_267_var;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (_tmp_262_var = _tmp_262_rule(p))  // ':' | '**'
+            (_tmp_267_var = _tmp_267_rule(p))  // ':' | '**'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_195[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' (':' | '**')"));
-            _res = _PyPegen_dummy_name(p, _literal, _tmp_262_var);
+            D(fprintf(stderr, "%*c+ _tmp_197[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' (':' | '**')"));
+            _res = _PyPegen_dummy_name(p, _literal, _tmp_267_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_195[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_197[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (':' | '**')"));
     }
     _res = NULL;
@@ -37050,13 +37333,12 @@ _tmp_195_rule(Parser *p)
     return _res;
 }
 
-// _tmp_196: lambda_param_no_default | ','
+// _tmp_198: lambda_param_no_default | ','
 static void *
-_tmp_196_rule(Parser *p)
+_tmp_198_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37069,18 +37351,18 @@ _tmp_196_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_196[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_198[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         if (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_196[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_198[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
             _res = lambda_param_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_196[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_198[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     { // ','
@@ -37088,18 +37370,18 @@ _tmp_196_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_196[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_198[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_196[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_198[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_196[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_198[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -37108,13 +37390,12 @@ _tmp_196_rule(Parser *p)
     return _res;
 }
 
-// _loop0_197: lambda_param_maybe_default
+// _loop0_199: lambda_param_maybe_default
 static asdl_seq *
-_loop0_197_rule(Parser *p)
+_loop0_199_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37136,7 +37417,7 @@ _loop0_197_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_197[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
+        D(fprintf(stderr, "%*c> _loop0_199[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_maybe_default"));
         NameDefaultPair* lambda_param_maybe_default_var;
         while (
             (lambda_param_maybe_default_var = lambda_param_maybe_default_rule(p))  // lambda_param_maybe_default
@@ -37159,7 +37440,7 @@ _loop0_197_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_197[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_199[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_maybe_default"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -37176,13 +37457,12 @@ _loop0_197_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_198: lambda_param_no_default | ','
+// _tmp_200: lambda_param_no_default | ','
 static void *
-_tmp_198_rule(Parser *p)
+_tmp_200_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37195,18 +37475,18 @@ _tmp_198_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_198[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+        D(fprintf(stderr, "%*c> _tmp_200[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
         arg_ty lambda_param_no_default_var;
         if (
             (lambda_param_no_default_var = lambda_param_no_default_rule(p))  // lambda_param_no_default
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_198[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
+            D(fprintf(stderr, "%*c+ _tmp_200[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "lambda_param_no_default"));
             _res = lambda_param_no_default_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_198[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_200[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "lambda_param_no_default"));
     }
     { // ','
@@ -37214,18 +37494,18 @@ _tmp_198_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_198[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_200[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_198[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_200[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_198[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_200[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -37234,13 +37514,12 @@ _tmp_198_rule(Parser *p)
     return _res;
 }
 
-// _tmp_199: '*' | '**' | '/'
+// _tmp_201: '*' | '**' | '/'
 static void *
-_tmp_199_rule(Parser *p)
+_tmp_201_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37253,18 +37532,18 @@ _tmp_199_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_199[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*'"));
+        D(fprintf(stderr, "%*c> _tmp_201[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'*'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_199[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*'"));
+            D(fprintf(stderr, "%*c+ _tmp_201[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'*'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_199[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_201[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'*'"));
     }
     { // '**'
@@ -37272,18 +37551,18 @@ _tmp_199_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_199[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
+        D(fprintf(stderr, "%*c> _tmp_201[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 35))  // token='**'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_199[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
+            D(fprintf(stderr, "%*c+ _tmp_201[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_199[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_201[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'**'"));
     }
     { // '/'
@@ -37291,18 +37570,18 @@ _tmp_199_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_199[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'/'"));
+        D(fprintf(stderr, "%*c> _tmp_201[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'/'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 17))  // token='/'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_199[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'/'"));
+            D(fprintf(stderr, "%*c+ _tmp_201[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'/'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_199[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_201[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'/'"));
     }
     _res = NULL;
@@ -37311,13 +37590,12 @@ _tmp_199_rule(Parser *p)
     return _res;
 }
 
-// _tmp_200: ',' | ')' | ':'
+// _tmp_202: ',' | ')' | ':'
 static void *
-_tmp_200_rule(Parser *p)
+_tmp_202_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37330,18 +37608,18 @@ _tmp_200_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_200[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_202[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_200[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_202[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_200[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_202[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     { // ')'
@@ -37349,18 +37627,18 @@ _tmp_200_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_200[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
+        D(fprintf(stderr, "%*c> _tmp_202[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_200[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
+            D(fprintf(stderr, "%*c+ _tmp_202[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_200[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_202[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "')'"));
     }
     { // ':'
@@ -37368,18 +37646,18 @@ _tmp_200_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_200[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_202[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_200[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_202[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_200[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_202[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     _res = NULL;
@@ -37388,13 +37666,12 @@ _tmp_200_rule(Parser *p)
     return _res;
 }
 
-// _loop0_202: ',' (expression ['as' star_target])
+// _loop0_204: ',' dotted_name
 static asdl_seq *
-_loop0_202_rule(Parser *p)
+_loop0_204_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37411,18 +37688,18 @@ _loop0_202_rule(Parser *p)
     }
     Py_ssize_t _children_capacity = 1;
     Py_ssize_t _n = 0;
-    { // ',' (expression ['as' star_target])
+    { // ',' dotted_name
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_202[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expression ['as' star_target])"));
+        D(fprintf(stderr, "%*c> _loop0_204[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' dotted_name"));
         Token * _literal;
-        void *elem;
+        expr_ty elem;
         while (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (elem = _tmp_263_rule(p))  // expression ['as' star_target]
+            (elem = dotted_name_rule(p))  // dotted_name
         )
         {
             _res = elem;
@@ -37448,8 +37725,8 @@ _loop0_202_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_202[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expression ['as' star_target])"));
+        D(fprintf(stderr, "%*c%s _loop0_204[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' dotted_name"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
     if (!_seq) {
@@ -37465,13 +37742,12 @@ _loop0_202_rule(Parser *p)
     return _seq;
 }
 
-// _gather_201: (expression ['as' star_target]) _loop0_202
+// _gather_203: dotted_name _loop0_204
 static asdl_seq *
-_gather_201_rule(Parser *p)
+_gather_203_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37479,27 +37755,27 @@ _gather_201_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // (expression ['as' star_target]) _loop0_202
+    { // dotted_name _loop0_204
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_201[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_202"));
-        void *elem;
+        D(fprintf(stderr, "%*c> _gather_203[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "dotted_name _loop0_204"));
+        expr_ty elem;
         asdl_seq * seq;
         if (
-            (elem = _tmp_263_rule(p))  // expression ['as' star_target]
+            (elem = dotted_name_rule(p))  // dotted_name
             &&
-            (seq = _loop0_202_rule(p))  // _loop0_202
+            (seq = _loop0_204_rule(p))  // _loop0_204
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_201[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_202"));
+            D(fprintf(stderr, "%*c+ _gather_203[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "dotted_name _loop0_204"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_201[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expression ['as' star_target]) _loop0_202"));
+        D(fprintf(stderr, "%*c%s _gather_203[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "dotted_name _loop0_204"));
     }
     _res = NULL;
   done:
@@ -37507,13 +37783,12 @@ _gather_201_rule(Parser *p)
     return _res;
 }
 
-// _loop0_204: ',' (expressions ['as' star_target])
+// _loop0_206: ',' (expression ['as' star_target])
 static asdl_seq *
-_loop0_204_rule(Parser *p)
+_loop0_206_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37530,18 +37805,18 @@ _loop0_204_rule(Parser *p)
     }
     Py_ssize_t _children_capacity = 1;
     Py_ssize_t _n = 0;
-    { // ',' (expressions ['as' star_target])
+    { // ',' (expression ['as' star_target])
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_204[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expressions ['as' star_target])"));
+        D(fprintf(stderr, "%*c> _loop0_206[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expression ['as' star_target])"));
         Token * _literal;
         void *elem;
         while (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (elem = _tmp_264_rule(p))  // expressions ['as' star_target]
+            (elem = _tmp_268_rule(p))  // expression ['as' star_target]
         )
         {
             _res = elem;
@@ -37567,8 +37842,8 @@ _loop0_204_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_204[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expressions ['as' star_target])"));
+        D(fprintf(stderr, "%*c%s _loop0_206[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expression ['as' star_target])"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
     if (!_seq) {
@@ -37584,13 +37859,12 @@ _loop0_204_rule(Parser *p)
     return _seq;
 }
 
-// _gather_203: (expressions ['as' star_target]) _loop0_204
+// _gather_205: (expression ['as' star_target]) _loop0_206
 static asdl_seq *
-_gather_203_rule(Parser *p)
+_gather_205_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37598,27 +37872,27 @@ _gather_203_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // (expressions ['as' star_target]) _loop0_204
+    { // (expression ['as' star_target]) _loop0_206
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_203[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_204"));
+        D(fprintf(stderr, "%*c> _gather_205[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_206"));
         void *elem;
         asdl_seq * seq;
         if (
-            (elem = _tmp_264_rule(p))  // expressions ['as' star_target]
+            (elem = _tmp_268_rule(p))  // expression ['as' star_target]
             &&
-            (seq = _loop0_204_rule(p))  // _loop0_204
+            (seq = _loop0_206_rule(p))  // _loop0_206
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_203[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_204"));
+            D(fprintf(stderr, "%*c+ _gather_205[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_206"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_203[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expressions ['as' star_target]) _loop0_204"));
+        D(fprintf(stderr, "%*c%s _gather_205[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expression ['as' star_target]) _loop0_206"));
     }
     _res = NULL;
   done:
@@ -37626,13 +37900,12 @@ _gather_203_rule(Parser *p)
     return _res;
 }
 
-// _loop0_206: ',' (expression ['as' star_target])
+// _loop0_208: ',' (expressions ['as' star_target])
 static asdl_seq *
-_loop0_206_rule(Parser *p)
+_loop0_208_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37649,18 +37922,18 @@ _loop0_206_rule(Parser *p)
     }
     Py_ssize_t _children_capacity = 1;
     Py_ssize_t _n = 0;
-    { // ',' (expression ['as' star_target])
+    { // ',' (expressions ['as' star_target])
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_206[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expression ['as' star_target])"));
+        D(fprintf(stderr, "%*c> _loop0_208[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expressions ['as' star_target])"));
         Token * _literal;
         void *elem;
         while (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (elem = _tmp_265_rule(p))  // expression ['as' star_target]
+            (elem = _tmp_269_rule(p))  // expressions ['as' star_target]
         )
         {
             _res = elem;
@@ -37686,8 +37959,8 @@ _loop0_206_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_206[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expression ['as' star_target])"));
+        D(fprintf(stderr, "%*c%s _loop0_208[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expressions ['as' star_target])"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
     if (!_seq) {
@@ -37703,13 +37976,12 @@ _loop0_206_rule(Parser *p)
     return _seq;
 }
 
-// _gather_205: (expression ['as' star_target]) _loop0_206
+// _gather_207: (expressions ['as' star_target]) _loop0_208
 static asdl_seq *
-_gather_205_rule(Parser *p)
+_gather_207_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37717,27 +37989,27 @@ _gather_205_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // (expression ['as' star_target]) _loop0_206
+    { // (expressions ['as' star_target]) _loop0_208
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_205[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_206"));
+        D(fprintf(stderr, "%*c> _gather_207[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_208"));
         void *elem;
         asdl_seq * seq;
         if (
-            (elem = _tmp_265_rule(p))  // expression ['as' star_target]
+            (elem = _tmp_269_rule(p))  // expressions ['as' star_target]
             &&
-            (seq = _loop0_206_rule(p))  // _loop0_206
+            (seq = _loop0_208_rule(p))  // _loop0_208
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_205[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_206"));
+            D(fprintf(stderr, "%*c+ _gather_207[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_208"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_205[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expression ['as' star_target]) _loop0_206"));
+        D(fprintf(stderr, "%*c%s _gather_207[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expressions ['as' star_target]) _loop0_208"));
     }
     _res = NULL;
   done:
@@ -37745,13 +38017,129 @@ _gather_205_rule(Parser *p)
     return _res;
 }
 
-// _loop0_208: ',' (expressions ['as' star_target])
+// _loop0_210: ',' (expression ['as' star_target])
 static asdl_seq *
-_loop0_208_rule(Parser *p)
+_loop0_210_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void *_res = NULL;
+    int _mark = p->mark;
+    void **_children = PyMem_Malloc(sizeof(void *));
+    if (!_children) {
         p->error_indicator = 1;
         PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    Py_ssize_t _children_capacity = 1;
+    Py_ssize_t _n = 0;
+    { // ',' (expression ['as' star_target])
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _loop0_210[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expression ['as' star_target])"));
+        Token * _literal;
+        void *elem;
+        while (
+            (_literal = _PyPegen_expect_token(p, 12))  // token=','
+            &&
+            (elem = _tmp_270_rule(p))  // expression ['as' star_target]
+        )
+        {
+            _res = elem;
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                PyMem_Free(_children);
+                p->level--;
+                return NULL;
+            }
+            if (_n == _children_capacity) {
+                _children_capacity *= 2;
+                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
+                if (!_new_children) {
+                    PyMem_Free(_children);
+                    p->error_indicator = 1;
+                    PyErr_NoMemory();
+                    p->level--;
+                    return NULL;
+                }
+                _children = _new_children;
+            }
+            _children[_n++] = _res;
+            _mark = p->mark;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _loop0_210[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expression ['as' star_target])"));
+    }
+    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
+    if (!_seq) {
+        PyMem_Free(_children);
+        p->error_indicator = 1;
+        PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
+    PyMem_Free(_children);
+    p->level--;
+    return _seq;
+}
+
+// _gather_209: (expression ['as' star_target]) _loop0_210
+static asdl_seq *
+_gather_209_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    asdl_seq * _res = NULL;
+    int _mark = p->mark;
+    { // (expression ['as' star_target]) _loop0_210
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _gather_209[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_210"));
+        void *elem;
+        asdl_seq * seq;
+        if (
+            (elem = _tmp_270_rule(p))  // expression ['as' star_target]
+            &&
+            (seq = _loop0_210_rule(p))  // _loop0_210
+        )
+        {
+            D(fprintf(stderr, "%*c+ _gather_209[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expression ['as' star_target]) _loop0_210"));
+            _res = _PyPegen_seq_insert_in_front(p, elem, seq);
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _gather_209[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expression ['as' star_target]) _loop0_210"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _loop0_212: ',' (expressions ['as' star_target])
+static asdl_seq *
+_loop0_212_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37773,13 +38161,13 @@ _loop0_208_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_208[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expressions ['as' star_target])"));
+        D(fprintf(stderr, "%*c> _loop0_212[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (expressions ['as' star_target])"));
         Token * _literal;
         void *elem;
         while (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
             &&
-            (elem = _tmp_266_rule(p))  // expressions ['as' star_target]
+            (elem = _tmp_271_rule(p))  // expressions ['as' star_target]
         )
         {
             _res = elem;
@@ -37805,7 +38193,7 @@ _loop0_208_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_208[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_212[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (expressions ['as' star_target])"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -37822,13 +38210,12 @@ _loop0_208_rule(Parser *p)
     return _seq;
 }
 
-// _gather_207: (expressions ['as' star_target]) _loop0_208
+// _gather_211: (expressions ['as' star_target]) _loop0_212
 static asdl_seq *
-_gather_207_rule(Parser *p)
+_gather_211_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37836,27 +38223,27 @@ _gather_207_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // (expressions ['as' star_target]) _loop0_208
+    { // (expressions ['as' star_target]) _loop0_212
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_207[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_208"));
+        D(fprintf(stderr, "%*c> _gather_211[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_212"));
         void *elem;
         asdl_seq * seq;
         if (
-            (elem = _tmp_266_rule(p))  // expressions ['as' star_target]
+            (elem = _tmp_271_rule(p))  // expressions ['as' star_target]
             &&
-            (seq = _loop0_208_rule(p))  // _loop0_208
+            (seq = _loop0_212_rule(p))  // _loop0_212
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_207[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_208"));
+            D(fprintf(stderr, "%*c+ _gather_211[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(expressions ['as' star_target]) _loop0_212"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_207[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expressions ['as' star_target]) _loop0_208"));
+        D(fprintf(stderr, "%*c%s _gather_211[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(expressions ['as' star_target]) _loop0_212"));
     }
     _res = NULL;
   done:
@@ -37864,13 +38251,12 @@ _gather_207_rule(Parser *p)
     return _res;
 }
 
-// _tmp_209: 'except' | 'finally'
+// _tmp_213: 'except' | 'finally'
 static void *
-_tmp_209_rule(Parser *p)
+_tmp_213_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37883,18 +38269,18 @@ _tmp_209_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_209[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'except'"));
+        D(fprintf(stderr, "%*c> _tmp_213[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'except'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 637))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 653))  // token='except'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_209[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'except'"));
+            D(fprintf(stderr, "%*c+ _tmp_213[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'except'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_209[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_213[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'except'"));
     }
     { // 'finally'
@@ -37902,18 +38288,18 @@ _tmp_209_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_209[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'finally'"));
+        D(fprintf(stderr, "%*c> _tmp_213[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'finally'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 633))  // token='finally'
+            (_keyword = _PyPegen_expect_token(p, 649))  // token='finally'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_209[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'finally'"));
+            D(fprintf(stderr, "%*c+ _tmp_213[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'finally'"));
             _res = _keyword;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_209[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_213[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'finally'"));
     }
     _res = NULL;
@@ -37922,13 +38308,12 @@ _tmp_209_rule(Parser *p)
     return _res;
 }
 
-// _loop0_210: block
+// _loop0_214: block
 static asdl_seq *
-_loop0_210_rule(Parser *p)
+_loop0_214_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -37950,7 +38335,7 @@ _loop0_210_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_210[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "block"));
+        D(fprintf(stderr, "%*c> _loop0_214[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "block"));
         asdl_stmt_seq* block_var;
         while (
             (block_var = block_rule(p))  // block
@@ -37973,7 +38358,7 @@ _loop0_210_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_210[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_214[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "block"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -37990,13 +38375,12 @@ _loop0_210_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_211: except_block
+// _loop1_215: except_block
 static asdl_seq *
-_loop1_211_rule(Parser *p)
+_loop1_215_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38018,7 +38402,7 @@ _loop1_211_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_211[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_block"));
+        D(fprintf(stderr, "%*c> _loop1_215[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_block"));
         excepthandler_ty except_block_var;
         while (
             (except_block_var = except_block_rule(p))  // except_block
@@ -38041,7 +38425,7 @@ _loop1_211_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_211[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_215[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "except_block"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -38063,13 +38447,12 @@ _loop1_211_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_212: 'as' NAME
+// _tmp_216: 'as' NAME
 static void *
-_tmp_212_rule(Parser *p)
+_tmp_216_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38082,21 +38465,21 @@ _tmp_212_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_212[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_216[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_212[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_216[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = _PyPegen_dummy_name(p, _keyword, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_212[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_216[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -38105,13 +38488,12 @@ _tmp_212_rule(Parser *p)
     return _res;
 }
 
-// _loop0_213: block
+// _loop0_217: block
 static asdl_seq *
-_loop0_213_rule(Parser *p)
+_loop0_217_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38133,7 +38515,7 @@ _loop0_213_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_213[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "block"));
+        D(fprintf(stderr, "%*c> _loop0_217[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "block"));
         asdl_stmt_seq* block_var;
         while (
             (block_var = block_rule(p))  // block
@@ -38156,7 +38538,7 @@ _loop0_213_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_213[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_217[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "block"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -38173,13 +38555,12 @@ _loop0_213_rule(Parser *p)
     return _seq;
 }
 
-// _loop1_214: except_star_block
+// _loop1_218: except_star_block
 static asdl_seq *
-_loop1_214_rule(Parser *p)
+_loop1_218_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38201,7 +38582,7 @@ _loop1_214_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop1_214[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_star_block"));
+        D(fprintf(stderr, "%*c> _loop1_218[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "except_star_block"));
         excepthandler_ty except_star_block_var;
         while (
             (except_star_block_var = except_star_block_rule(p))  // except_star_block
@@ -38224,7 +38605,7 @@ _loop1_214_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop1_214[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop1_218[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "except_star_block"));
     }
     if (_n == 0 || p->error_indicator) {
@@ -38246,13 +38627,12 @@ _loop1_214_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_215: expression ['as' NAME]
+// _tmp_219: expression ['as' NAME]
 static void *
-_tmp_215_rule(Parser *p)
+_tmp_219_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38265,22 +38645,22 @@ _tmp_215_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_215[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression ['as' NAME]"));
+        D(fprintf(stderr, "%*c> _tmp_219[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression ['as' NAME]"));
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty expression_var;
         if (
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var = _tmp_267_rule(p), !p->error_indicator)  // ['as' NAME]
+            (_opt_var = _tmp_272_rule(p), !p->error_indicator)  // ['as' NAME]
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_215[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ['as' NAME]"));
+            D(fprintf(stderr, "%*c+ _tmp_219[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ['as' NAME]"));
             _res = _PyPegen_dummy_name(p, expression_var, _opt_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_215[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_219[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression ['as' NAME]"));
     }
     _res = NULL;
@@ -38289,13 +38669,12 @@ _tmp_215_rule(Parser *p)
     return _res;
 }
 
-// _tmp_216: 'as' NAME
+// _tmp_220: 'as' NAME
 static void *
-_tmp_216_rule(Parser *p)
+_tmp_220_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38308,21 +38687,21 @@ _tmp_216_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_216[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_220[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_216[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_220[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = _PyPegen_dummy_name(p, _keyword, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_216[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_220[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -38331,13 +38710,12 @@ _tmp_216_rule(Parser *p)
     return _res;
 }
 
-// _tmp_217: 'as' NAME
+// _tmp_221: 'as' NAME
 static void *
-_tmp_217_rule(Parser *p)
+_tmp_221_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38350,21 +38728,21 @@ _tmp_217_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_217[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_221[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_217[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_221[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = _PyPegen_dummy_name(p, _keyword, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_217[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_221[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -38373,13 +38751,12 @@ _tmp_217_rule(Parser *p)
     return _res;
 }
 
-// _tmp_218: NEWLINE | ':'
+// _tmp_222: NEWLINE | ':'
 static void *
-_tmp_218_rule(Parser *p)
+_tmp_222_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38392,18 +38769,18 @@ _tmp_218_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_218[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
+        D(fprintf(stderr, "%*c> _tmp_222[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
         Token * newline_var;
         if (
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_218[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
+            D(fprintf(stderr, "%*c+ _tmp_222[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "NEWLINE"));
             _res = newline_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_218[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_222[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "NEWLINE"));
     }
     { // ':'
@@ -38411,18 +38788,18 @@ _tmp_218_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_218[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_222[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_218[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_222[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_218[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_222[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     _res = NULL;
@@ -38431,13 +38808,12 @@ _tmp_218_rule(Parser *p)
     return _res;
 }
 
-// _tmp_219: 'as' NAME
+// _tmp_223: 'as' NAME
 static void *
-_tmp_219_rule(Parser *p)
+_tmp_223_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38450,21 +38826,21 @@ _tmp_219_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_219[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_223[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_219[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_223[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = _PyPegen_dummy_name(p, _keyword, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_219[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_223[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -38473,13 +38849,12 @@ _tmp_219_rule(Parser *p)
     return _res;
 }
 
-// _tmp_220: 'as' NAME
+// _tmp_224: 'as' NAME
 static void *
-_tmp_220_rule(Parser *p)
+_tmp_224_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38492,21 +38867,21 @@ _tmp_220_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_220[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_224[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_220[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_224[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = _PyPegen_dummy_name(p, _keyword, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_220[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_224[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -38515,13 +38890,12 @@ _tmp_220_rule(Parser *p)
     return _res;
 }
 
-// _tmp_221: positional_patterns ','
+// _tmp_225: positional_patterns ','
 static void *
-_tmp_221_rule(Parser *p)
+_tmp_225_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38534,7 +38908,7 @@ _tmp_221_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_221[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "positional_patterns ','"));
+        D(fprintf(stderr, "%*c> _tmp_225[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "positional_patterns ','"));
         Token * _literal;
         asdl_pattern_seq* positional_patterns_var;
         if (
@@ -38543,12 +38917,12 @@ _tmp_221_rule(Parser *p)
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_221[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "positional_patterns ','"));
+            D(fprintf(stderr, "%*c+ _tmp_225[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "positional_patterns ','"));
             _res = _PyPegen_dummy_name(p, positional_patterns_var, _literal);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_221[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_225[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "positional_patterns ','"));
     }
     _res = NULL;
@@ -38557,13 +38931,12 @@ _tmp_221_rule(Parser *p)
     return _res;
 }
 
-// _tmp_222: '->' expression
+// _tmp_226: '->' expression
 static void *
-_tmp_222_rule(Parser *p)
+_tmp_226_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38576,7 +38949,7 @@ _tmp_222_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_222[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'->' expression"));
+        D(fprintf(stderr, "%*c> _tmp_226[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'->' expression"));
         Token * _literal;
         expr_ty expression_var;
         if (
@@ -38585,12 +38958,12 @@ _tmp_222_rule(Parser *p)
             (expression_var = expression_rule(p))  // expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_222[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'->' expression"));
+            D(fprintf(stderr, "%*c+ _tmp_226[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'->' expression"));
             _res = _PyPegen_dummy_name(p, _literal, expression_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_222[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_226[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'->' expression"));
     }
     _res = NULL;
@@ -38599,13 +38972,12 @@ _tmp_222_rule(Parser *p)
     return _res;
 }
 
-// _tmp_223: '(' arguments? ')'
+// _tmp_227: '(' arguments? ')'
 static void *
-_tmp_223_rule(Parser *p)
+_tmp_227_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38618,7 +38990,7 @@ _tmp_223_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_223[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
+        D(fprintf(stderr, "%*c> _tmp_227[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
         Token * _literal;
         Token * _literal_1;
         void *_opt_var;
@@ -38631,12 +39003,12 @@ _tmp_223_rule(Parser *p)
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_223[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
+            D(fprintf(stderr, "%*c+ _tmp_227[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
             _res = _PyPegen_dummy_name(p, _literal, _opt_var, _literal_1);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_223[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_227[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'(' arguments? ')'"));
     }
     _res = NULL;
@@ -38645,13 +39017,12 @@ _tmp_223_rule(Parser *p)
     return _res;
 }
 
-// _tmp_224: '(' arguments? ')'
+// _tmp_228: '(' arguments? ')'
 static void *
-_tmp_224_rule(Parser *p)
+_tmp_228_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38664,7 +39035,7 @@ _tmp_224_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_224[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
+        D(fprintf(stderr, "%*c> _tmp_228[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
         Token * _literal;
         Token * _literal_1;
         void *_opt_var;
@@ -38677,12 +39048,12 @@ _tmp_224_rule(Parser *p)
             (_literal_1 = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_224[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
+            D(fprintf(stderr, "%*c+ _tmp_228[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'(' arguments? ')'"));
             _res = _PyPegen_dummy_name(p, _literal, _opt_var, _literal_1);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_224[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_228[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'(' arguments? ')'"));
     }
     _res = NULL;
@@ -38691,13 +39062,12 @@ _tmp_224_rule(Parser *p)
     return _res;
 }
 
-// _loop0_226: ',' double_starred_kvpair
+// _loop0_230: ',' double_starred_kvpair
 static asdl_seq *
-_loop0_226_rule(Parser *p)
+_loop0_230_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38719,7 +39089,7 @@ _loop0_226_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_226[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' double_starred_kvpair"));
+        D(fprintf(stderr, "%*c> _loop0_230[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' double_starred_kvpair"));
         Token * _literal;
         KeyValuePair* elem;
         while (
@@ -38751,7 +39121,7 @@ _loop0_226_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_226[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_230[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' double_starred_kvpair"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -38768,13 +39138,12 @@ _loop0_226_rule(Parser *p)
     return _seq;
 }
 
-// _gather_225: double_starred_kvpair _loop0_226
+// _gather_229: double_starred_kvpair _loop0_230
 static asdl_seq *
-_gather_225_rule(Parser *p)
+_gather_229_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38782,27 +39151,27 @@ _gather_225_rule(Parser *p)
     }
     asdl_seq * _res = NULL;
     int _mark = p->mark;
-    { // double_starred_kvpair _loop0_226
+    { // double_starred_kvpair _loop0_230
         if (p->error_indicator) {
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _gather_225[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_226"));
+        D(fprintf(stderr, "%*c> _gather_229[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_230"));
         KeyValuePair* elem;
         asdl_seq * seq;
         if (
             (elem = double_starred_kvpair_rule(p))  // double_starred_kvpair
             &&
-            (seq = _loop0_226_rule(p))  // _loop0_226
+            (seq = _loop0_230_rule(p))  // _loop0_230
         )
         {
-            D(fprintf(stderr, "%*c+ _gather_225[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_226"));
+            D(fprintf(stderr, "%*c+ _gather_229[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "double_starred_kvpair _loop0_230"));
             _res = _PyPegen_seq_insert_in_front(p, elem, seq);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _gather_225[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "double_starred_kvpair _loop0_226"));
+        D(fprintf(stderr, "%*c%s _gather_229[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "double_starred_kvpair _loop0_230"));
     }
     _res = NULL;
   done:
@@ -38810,13 +39179,12 @@ _gather_225_rule(Parser *p)
     return _res;
 }
 
-// _tmp_227: '}' | ','
+// _tmp_231: '}' | ','
 static void *
-_tmp_227_rule(Parser *p)
+_tmp_231_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38829,18 +39197,18 @@ _tmp_227_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_227[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
+        D(fprintf(stderr, "%*c> _tmp_231[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_227[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
+            D(fprintf(stderr, "%*c+ _tmp_231[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_227[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_231[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'}'"));
     }
     { // ','
@@ -38848,18 +39216,18 @@ _tmp_227_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_227[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_231[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_227[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_231[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_227[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_231[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -38868,13 +39236,12 @@ _tmp_227_rule(Parser *p)
     return _res;
 }
 
-// _tmp_228: '}' | ','
+// _tmp_232: '}' | ','
 static void *
-_tmp_228_rule(Parser *p)
+_tmp_232_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38887,18 +39254,18 @@ _tmp_228_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_228[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
+        D(fprintf(stderr, "%*c> _tmp_232[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_228[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
+            D(fprintf(stderr, "%*c+ _tmp_232[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_228[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_232[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'}'"));
     }
     { // ','
@@ -38906,18 +39273,18 @@ _tmp_228_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_228[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
+        D(fprintf(stderr, "%*c> _tmp_232[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 12))  // token=','
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_228[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
+            D(fprintf(stderr, "%*c+ _tmp_232[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_228[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_232[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','"));
     }
     _res = NULL;
@@ -38926,13 +39293,12 @@ _tmp_228_rule(Parser *p)
     return _res;
 }
 
-// _tmp_229: yield_expr | star_expressions
+// _tmp_233: yield_expr | star_expressions
 static void *
-_tmp_229_rule(Parser *p)
+_tmp_233_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -38945,18 +39311,18 @@ _tmp_229_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_229[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_233[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_229[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_233[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_229[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_233[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -38964,18 +39330,18 @@ _tmp_229_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_229[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_233[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_229[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_233[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_229[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_233[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -38984,13 +39350,12 @@ _tmp_229_rule(Parser *p)
     return _res;
 }
 
-// _tmp_230: yield_expr | star_expressions
+// _tmp_234: yield_expr | star_expressions
 static void *
-_tmp_230_rule(Parser *p)
+_tmp_234_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39003,18 +39368,18 @@ _tmp_230_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_230[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_234[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_230[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_234[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_230[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_234[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -39022,18 +39387,18 @@ _tmp_230_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_230[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_234[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_230[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_234[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_230[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_234[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -39042,13 +39407,12 @@ _tmp_230_rule(Parser *p)
     return _res;
 }
 
-// _tmp_231: '=' | '!' | ':' | '}'
+// _tmp_235: '=' | '!' | ':' | '}'
 static void *
-_tmp_231_rule(Parser *p)
+_tmp_235_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39061,18 +39425,18 @@ _tmp_231_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_231[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
+        D(fprintf(stderr, "%*c> _tmp_235[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'='"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_231[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
+            D(fprintf(stderr, "%*c+ _tmp_235[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'='"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_231[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_235[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'='"));
     }
     { // '!'
@@ -39080,18 +39444,18 @@ _tmp_231_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_231[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!'"));
+        D(fprintf(stderr, "%*c> _tmp_235[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 54))  // token='!'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_231[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!'"));
+            D(fprintf(stderr, "%*c+ _tmp_235[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_231[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_235[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'!'"));
     }
     { // ':'
@@ -39099,18 +39463,18 @@ _tmp_231_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_231[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_235[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_231[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_235[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_231[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_235[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     { // '}'
@@ -39118,18 +39482,18 @@ _tmp_231_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_231[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
+        D(fprintf(stderr, "%*c> _tmp_235[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_231[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
+            D(fprintf(stderr, "%*c+ _tmp_235[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_231[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_235[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'}'"));
     }
     _res = NULL;
@@ -39138,13 +39502,12 @@ _tmp_231_rule(Parser *p)
     return _res;
 }
 
-// _tmp_232: yield_expr | star_expressions
+// _tmp_236: yield_expr | star_expressions
 static void *
-_tmp_232_rule(Parser *p)
+_tmp_236_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39157,18 +39520,18 @@ _tmp_232_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_232[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_236[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_232[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_236[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_232[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_236[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -39176,18 +39539,18 @@ _tmp_232_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_232[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_236[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_232[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_236[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_232[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_236[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -39196,13 +39559,12 @@ _tmp_232_rule(Parser *p)
     return _res;
 }
 
-// _tmp_233: '!' | ':' | '}'
+// _tmp_237: '!' | ':' | '}'
 static void *
-_tmp_233_rule(Parser *p)
+_tmp_237_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39215,18 +39577,18 @@ _tmp_233_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_233[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!'"));
+        D(fprintf(stderr, "%*c> _tmp_237[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 54))  // token='!'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_233[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!'"));
+            D(fprintf(stderr, "%*c+ _tmp_237[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_233[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_237[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'!'"));
     }
     { // ':'
@@ -39234,18 +39596,18 @@ _tmp_233_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_233[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_237[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_233[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_237[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_233[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_237[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     { // '}'
@@ -39253,18 +39615,18 @@ _tmp_233_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_233[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
+        D(fprintf(stderr, "%*c> _tmp_237[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_233[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
+            D(fprintf(stderr, "%*c+ _tmp_237[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_233[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_237[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'}'"));
     }
     _res = NULL;
@@ -39273,13 +39635,12 @@ _tmp_233_rule(Parser *p)
     return _res;
 }
 
-// _tmp_234: yield_expr | star_expressions
+// _tmp_238: yield_expr | star_expressions
 static void *
-_tmp_234_rule(Parser *p)
+_tmp_238_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39292,18 +39653,18 @@ _tmp_234_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_234[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_238[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_234[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_238[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_234[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_238[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -39311,18 +39672,18 @@ _tmp_234_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_234[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_238[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_234[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_238[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_234[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_238[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -39331,13 +39692,12 @@ _tmp_234_rule(Parser *p)
     return _res;
 }
 
-// _tmp_235: yield_expr | star_expressions
+// _tmp_239: yield_expr | star_expressions
 static void *
-_tmp_235_rule(Parser *p)
+_tmp_239_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39350,18 +39710,18 @@ _tmp_235_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_235[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_239[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_235[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_239[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_235[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_239[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -39369,18 +39729,18 @@ _tmp_235_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_235[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_239[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_235[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_239[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_235[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_239[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -39389,13 +39749,12 @@ _tmp_235_rule(Parser *p)
     return _res;
 }
 
-// _tmp_236: '!' NAME
+// _tmp_240: '!' NAME
 static void *
-_tmp_236_rule(Parser *p)
+_tmp_240_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39408,7 +39767,7 @@ _tmp_236_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_236[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_240[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
         Token * _literal;
         expr_ty name_var;
         if (
@@ -39417,12 +39776,12 @@ _tmp_236_rule(Parser *p)
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_236[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_240[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
             _res = _PyPegen_dummy_name(p, _literal, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_236[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_240[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'!' NAME"));
     }
     _res = NULL;
@@ -39431,13 +39790,12 @@ _tmp_236_rule(Parser *p)
     return _res;
 }
 
-// _tmp_237: ':' | '}'
+// _tmp_241: ':' | '}'
 static void *
-_tmp_237_rule(Parser *p)
+_tmp_241_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39450,18 +39808,18 @@ _tmp_237_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_237[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_241[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_237[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_241[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_237[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_241[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     { // '}'
@@ -39469,18 +39827,18 @@ _tmp_237_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_237[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
+        D(fprintf(stderr, "%*c> _tmp_241[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_237[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
+            D(fprintf(stderr, "%*c+ _tmp_241[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_237[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_241[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'}'"));
     }
     _res = NULL;
@@ -39489,13 +39847,12 @@ _tmp_237_rule(Parser *p)
     return _res;
 }
 
-// _tmp_238: yield_expr | star_expressions
+// _tmp_242: yield_expr | star_expressions
 static void *
-_tmp_238_rule(Parser *p)
+_tmp_242_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39508,18 +39865,18 @@ _tmp_238_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_238[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_242[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_238[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_242[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_238[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_242[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -39527,18 +39884,18 @@ _tmp_238_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_238[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_242[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_238[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_242[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_238[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_242[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -39547,13 +39904,12 @@ _tmp_238_rule(Parser *p)
     return _res;
 }
 
-// _tmp_239: '!' NAME
+// _tmp_243: '!' NAME
 static void *
-_tmp_239_rule(Parser *p)
+_tmp_243_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39566,7 +39922,7 @@ _tmp_239_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_239[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_243[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
         Token * _literal;
         expr_ty name_var;
         if (
@@ -39575,12 +39931,12 @@ _tmp_239_rule(Parser *p)
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_239[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_243[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
             _res = _PyPegen_dummy_name(p, _literal, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_239[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_243[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'!' NAME"));
     }
     _res = NULL;
@@ -39589,13 +39945,12 @@ _tmp_239_rule(Parser *p)
     return _res;
 }
 
-// _loop0_240: fstring_format_spec
+// _loop0_244: fstring_format_spec
 static asdl_seq *
-_loop0_240_rule(Parser *p)
+_loop0_244_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39617,7 +39972,7 @@ _loop0_240_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _loop0_240[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_format_spec"));
+        D(fprintf(stderr, "%*c> _loop0_244[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring_format_spec"));
         expr_ty fstring_format_spec_var;
         while (
             (fstring_format_spec_var = fstring_format_spec_rule(p))  // fstring_format_spec
@@ -39640,7 +39995,7 @@ _loop0_240_rule(Parser *p)
             _mark = p->mark;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _loop0_240[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _loop0_244[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "fstring_format_spec"));
     }
     asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
@@ -39657,13 +40012,12 @@ _loop0_240_rule(Parser *p)
     return _seq;
 }
 
-// _tmp_241: yield_expr | star_expressions
+// _tmp_245: yield_expr | star_expressions
 static void *
-_tmp_241_rule(Parser *p)
+_tmp_245_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39676,18 +40030,18 @@ _tmp_241_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_241[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+        D(fprintf(stderr, "%*c> _tmp_245[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "yield_expr"));
         expr_ty yield_expr_var;
         if (
             (yield_expr_var = yield_expr_rule(p))  // yield_expr
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_241[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
+            D(fprintf(stderr, "%*c+ _tmp_245[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "yield_expr"));
             _res = yield_expr_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_241[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_245[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "yield_expr"));
     }
     { // star_expressions
@@ -39695,18 +40049,18 @@ _tmp_241_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_241[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+        D(fprintf(stderr, "%*c> _tmp_245[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_expressions"));
         expr_ty star_expressions_var;
         if (
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_241[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
+            D(fprintf(stderr, "%*c+ _tmp_245[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_expressions"));
             _res = star_expressions_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_241[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_245[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_expressions"));
     }
     _res = NULL;
@@ -39715,13 +40069,12 @@ _tmp_241_rule(Parser *p)
     return _res;
 }
 
-// _tmp_242: '!' NAME
+// _tmp_246: '!' NAME
 static void *
-_tmp_242_rule(Parser *p)
+_tmp_246_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39734,7 +40087,7 @@ _tmp_242_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_242[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_246[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
         Token * _literal;
         expr_ty name_var;
         if (
@@ -39743,12 +40096,12 @@ _tmp_242_rule(Parser *p)
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_242[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_246[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'!' NAME"));
             _res = _PyPegen_dummy_name(p, _literal, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_242[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_246[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'!' NAME"));
     }
     _res = NULL;
@@ -39757,13 +40110,12 @@ _tmp_242_rule(Parser *p)
     return _res;
 }
 
-// _tmp_243: ':' | '}'
+// _tmp_247: ':' | '}'
 static void *
-_tmp_243_rule(Parser *p)
+_tmp_247_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39776,18 +40128,18 @@ _tmp_243_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_243[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_247[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_243[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_247[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_243[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_247[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     { // '}'
@@ -39795,18 +40147,18 @@ _tmp_243_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_243[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
+        D(fprintf(stderr, "%*c> _tmp_247[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'}'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 26))  // token='}'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_243[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
+            D(fprintf(stderr, "%*c+ _tmp_247[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'}'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_243[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_247[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'}'"));
     }
     _res = NULL;
@@ -39815,13 +40167,12 @@ _tmp_243_rule(Parser *p)
     return _res;
 }
 
-// _tmp_244: star_targets '='
+// _tmp_248: star_targets '='
 static void *
-_tmp_244_rule(Parser *p)
+_tmp_248_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39834,7 +40185,7 @@ _tmp_244_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_244[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
+        D(fprintf(stderr, "%*c> _tmp_248[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
         Token * _literal;
         expr_ty z;
         if (
@@ -39843,7 +40194,7 @@ _tmp_244_rule(Parser *p)
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_244[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
+            D(fprintf(stderr, "%*c+ _tmp_248[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -39853,7 +40204,7 @@ _tmp_244_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_244[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_248[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_targets '='"));
     }
     _res = NULL;
@@ -39862,13 +40213,12 @@ _tmp_244_rule(Parser *p)
     return _res;
 }
 
-// _tmp_245: '.' | '...'
+// _tmp_249: '.' | '...'
 static void *
-_tmp_245_rule(Parser *p)
+_tmp_249_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39881,18 +40231,18 @@ _tmp_245_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_245[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
+        D(fprintf(stderr, "%*c> _tmp_249[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 23))  // token='.'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_245[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
+            D(fprintf(stderr, "%*c+ _tmp_249[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_245[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_249[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'.'"));
     }
     { // '...'
@@ -39900,18 +40250,18 @@ _tmp_245_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_245[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'...'"));
+        D(fprintf(stderr, "%*c> _tmp_249[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'...'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 52))  // token='...'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_245[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'...'"));
+            D(fprintf(stderr, "%*c+ _tmp_249[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'...'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_245[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_249[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'...'"));
     }
     _res = NULL;
@@ -39920,13 +40270,12 @@ _tmp_245_rule(Parser *p)
     return _res;
 }
 
-// _tmp_246: '.' | '...'
+// _tmp_250: '.' | '...'
 static void *
-_tmp_246_rule(Parser *p)
+_tmp_250_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39939,18 +40288,18 @@ _tmp_246_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_246[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
+        D(fprintf(stderr, "%*c> _tmp_250[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'.'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 23))  // token='.'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_246[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
+            D(fprintf(stderr, "%*c+ _tmp_250[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'.'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_246[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_250[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'.'"));
     }
     { // '...'
@@ -39958,18 +40307,18 @@ _tmp_246_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_246[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'...'"));
+        D(fprintf(stderr, "%*c> _tmp_250[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'...'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 52))  // token='...'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_246[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'...'"));
+            D(fprintf(stderr, "%*c+ _tmp_250[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'...'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_246[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_250[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'...'"));
     }
     _res = NULL;
@@ -39978,13 +40327,12 @@ _tmp_246_rule(Parser *p)
     return _res;
 }
 
-// _tmp_247: '@' named_expression NEWLINE
+// _tmp_251: '@' named_expression NEWLINE
 static void *
-_tmp_247_rule(Parser *p)
+_tmp_251_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -39997,7 +40345,7 @@ _tmp_247_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_247[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'@' named_expression NEWLINE"));
+        D(fprintf(stderr, "%*c> _tmp_251[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'@' named_expression NEWLINE"));
         Token * _literal;
         expr_ty f;
         Token * newline_var;
@@ -40009,7 +40357,7 @@ _tmp_247_rule(Parser *p)
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_247[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'@' named_expression NEWLINE"));
+            D(fprintf(stderr, "%*c+ _tmp_251[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'@' named_expression NEWLINE"));
             _res = f;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40019,7 +40367,7 @@ _tmp_247_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_247[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_251[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'@' named_expression NEWLINE"));
     }
     _res = NULL;
@@ -40028,13 +40376,12 @@ _tmp_247_rule(Parser *p)
     return _res;
 }
 
-// _tmp_248: ',' expression
+// _tmp_252: ',' expression
 static void *
-_tmp_248_rule(Parser *p)
+_tmp_252_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40047,7 +40394,7 @@ _tmp_248_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_248[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
+        D(fprintf(stderr, "%*c> _tmp_252[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' expression"));
         Token * _literal;
         expr_ty c;
         if (
@@ -40056,7 +40403,7 @@ _tmp_248_rule(Parser *p)
             (c = expression_rule(p))  // expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_248[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' expression"));
+            D(fprintf(stderr, "%*c+ _tmp_252[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' expression"));
             _res = c;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40066,7 +40413,7 @@ _tmp_248_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_248[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_252[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' expression"));
     }
     _res = NULL;
@@ -40075,13 +40422,12 @@ _tmp_248_rule(Parser *p)
     return _res;
 }
 
-// _tmp_249: ',' star_expression
+// _tmp_253: ',' star_expression
 static void *
-_tmp_249_rule(Parser *p)
+_tmp_253_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40094,7 +40440,7 @@ _tmp_249_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_249[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_expression"));
+        D(fprintf(stderr, "%*c> _tmp_253[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_expression"));
         Token * _literal;
         expr_ty c;
         if (
@@ -40103,7 +40449,7 @@ _tmp_249_rule(Parser *p)
             (c = star_expression_rule(p))  // star_expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_249[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' star_expression"));
+            D(fprintf(stderr, "%*c+ _tmp_253[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' star_expression"));
             _res = c;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40113,7 +40459,7 @@ _tmp_249_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_249[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_253[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' star_expression"));
     }
     _res = NULL;
@@ -40122,13 +40468,12 @@ _tmp_249_rule(Parser *p)
     return _res;
 }
 
-// _tmp_250: 'or' conjunction
+// _tmp_254: 'or' conjunction
 static void *
-_tmp_250_rule(Parser *p)
+_tmp_254_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40141,16 +40486,16 @@ _tmp_250_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_250[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'or' conjunction"));
+        D(fprintf(stderr, "%*c> _tmp_254[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'or' conjunction"));
         Token * _keyword;
         expr_ty c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 574))  // token='or'
+            (_keyword = _PyPegen_expect_token(p, 581))  // token='or'
             &&
             (c = conjunction_rule(p))  // conjunction
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_250[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'or' conjunction"));
+            D(fprintf(stderr, "%*c+ _tmp_254[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'or' conjunction"));
             _res = c;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40160,7 +40505,7 @@ _tmp_250_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_250[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_254[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'or' conjunction"));
     }
     _res = NULL;
@@ -40169,13 +40514,12 @@ _tmp_250_rule(Parser *p)
     return _res;
 }
 
-// _tmp_251: 'and' inversion
+// _tmp_255: 'and' inversion
 static void *
-_tmp_251_rule(Parser *p)
+_tmp_255_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40188,16 +40532,16 @@ _tmp_251_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_251[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'and' inversion"));
+        D(fprintf(stderr, "%*c> _tmp_255[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'and' inversion"));
         Token * _keyword;
         expr_ty c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 575))  // token='and'
+            (_keyword = _PyPegen_expect_token(p, 582))  // token='and'
             &&
             (c = inversion_rule(p))  // inversion
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_251[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'and' inversion"));
+            D(fprintf(stderr, "%*c+ _tmp_255[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'and' inversion"));
             _res = c;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40207,7 +40551,7 @@ _tmp_251_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_251[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_255[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'and' inversion"));
     }
     _res = NULL;
@@ -40216,13 +40560,12 @@ _tmp_251_rule(Parser *p)
     return _res;
 }
 
-// _tmp_252: slice | starred_expression
+// _tmp_256: slice | starred_expression
 static void *
-_tmp_252_rule(Parser *p)
+_tmp_256_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40235,18 +40578,18 @@ _tmp_252_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_252[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slice"));
+        D(fprintf(stderr, "%*c> _tmp_256[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "slice"));
         expr_ty slice_var;
         if (
             (slice_var = slice_rule(p))  // slice
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_252[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slice"));
+            D(fprintf(stderr, "%*c+ _tmp_256[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "slice"));
             _res = slice_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_252[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_256[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "slice"));
     }
     { // starred_expression
@@ -40254,18 +40597,18 @@ _tmp_252_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_252[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "starred_expression"));
+        D(fprintf(stderr, "%*c> _tmp_256[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "starred_expression"));
         expr_ty starred_expression_var;
         if (
             (starred_expression_var = starred_expression_rule(p))  // starred_expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_252[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "starred_expression"));
+            D(fprintf(stderr, "%*c+ _tmp_256[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "starred_expression"));
             _res = starred_expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_252[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_256[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "starred_expression"));
     }
     _res = NULL;
@@ -40274,13 +40617,12 @@ _tmp_252_rule(Parser *p)
     return _res;
 }
 
-// _tmp_253: fstring | string
+// _tmp_257: fstring | string
 static void *
-_tmp_253_rule(Parser *p)
+_tmp_257_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40293,18 +40635,18 @@ _tmp_253_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_253[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring"));
+        D(fprintf(stderr, "%*c> _tmp_257[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "fstring"));
         expr_ty fstring_var;
         if (
             (fstring_var = fstring_rule(p))  // fstring
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_253[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "fstring"));
+            D(fprintf(stderr, "%*c+ _tmp_257[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "fstring"));
             _res = fstring_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_253[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_257[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "fstring"));
     }
     { // string
@@ -40312,18 +40654,18 @@ _tmp_253_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_253[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "string"));
+        D(fprintf(stderr, "%*c> _tmp_257[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "string"));
         expr_ty string_var;
         if (
             (string_var = string_rule(p))  // string
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_253[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "string"));
+            D(fprintf(stderr, "%*c+ _tmp_257[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "string"));
             _res = string_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_253[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_257[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "string"));
     }
     _res = NULL;
@@ -40332,13 +40674,12 @@ _tmp_253_rule(Parser *p)
     return _res;
 }
 
-// _tmp_254: 'if' disjunction
+// _tmp_258: 'if' disjunction
 static void *
-_tmp_254_rule(Parser *p)
+_tmp_258_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40351,16 +40692,16 @@ _tmp_254_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_254[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
+        D(fprintf(stderr, "%*c> _tmp_258[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (z = disjunction_rule(p))  // disjunction
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_254[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
+            D(fprintf(stderr, "%*c+ _tmp_258[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40370,7 +40711,7 @@ _tmp_254_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_254[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_258[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'if' disjunction"));
     }
     _res = NULL;
@@ -40379,13 +40720,12 @@ _tmp_254_rule(Parser *p)
     return _res;
 }
 
-// _tmp_255: 'if' disjunction
+// _tmp_259: 'if' disjunction
 static void *
-_tmp_255_rule(Parser *p)
+_tmp_259_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40398,16 +40738,16 @@ _tmp_255_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_255[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
+        D(fprintf(stderr, "%*c> _tmp_259[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 642))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='if'
             &&
             (z = disjunction_rule(p))  // disjunction
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_255[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
+            D(fprintf(stderr, "%*c+ _tmp_259[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'if' disjunction"));
             _res = z;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40417,7 +40757,7 @@ _tmp_255_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_255[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_259[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'if' disjunction"));
     }
     _res = NULL;
@@ -40426,13 +40766,12 @@ _tmp_255_rule(Parser *p)
     return _res;
 }
 
-// _tmp_256: starred_expression | (assignment_expression | expression !':=') !'='
+// _tmp_260: starred_expression | (assignment_expression | expression !':=') !'='
 static void *
-_tmp_256_rule(Parser *p)
+_tmp_260_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40445,18 +40784,18 @@ _tmp_256_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_256[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "starred_expression"));
+        D(fprintf(stderr, "%*c> _tmp_260[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "starred_expression"));
         expr_ty starred_expression_var;
         if (
             (starred_expression_var = starred_expression_rule(p))  // starred_expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_256[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "starred_expression"));
+            D(fprintf(stderr, "%*c+ _tmp_260[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "starred_expression"));
             _res = starred_expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_256[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_260[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "starred_expression"));
     }
     { // (assignment_expression | expression !':=') !'='
@@ -40464,20 +40803,20 @@ _tmp_256_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_256[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
-        void *_tmp_268_var;
+        D(fprintf(stderr, "%*c> _tmp_260[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
+        void *_tmp_273_var;
         if (
-            (_tmp_268_var = _tmp_268_rule(p))  // assignment_expression | expression !':='
+            (_tmp_273_var = _tmp_273_rule(p))  // assignment_expression | expression !':='
             &&
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 22)  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_256[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
-            _res = _tmp_268_var;
+            D(fprintf(stderr, "%*c+ _tmp_260[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
+            _res = _tmp_273_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_256[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_260[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
     }
     _res = NULL;
@@ -40486,13 +40825,12 @@ _tmp_256_rule(Parser *p)
     return _res;
 }
 
-// _tmp_257: ',' star_target
+// _tmp_261: ',' star_target
 static void *
-_tmp_257_rule(Parser *p)
+_tmp_261_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40505,7 +40843,7 @@ _tmp_257_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_257[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_261[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_target"));
         Token * _literal;
         expr_ty c;
         if (
@@ -40514,7 +40852,7 @@ _tmp_257_rule(Parser *p)
             (c = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_257[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_261[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' star_target"));
             _res = c;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40524,7 +40862,7 @@ _tmp_257_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_257[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_261[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' star_target"));
     }
     _res = NULL;
@@ -40533,13 +40871,12 @@ _tmp_257_rule(Parser *p)
     return _res;
 }
 
-// _tmp_258: ',' star_target
+// _tmp_262: ',' star_target
 static void *
-_tmp_258_rule(Parser *p)
+_tmp_262_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40552,7 +40889,7 @@ _tmp_258_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_258[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_262[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' star_target"));
         Token * _literal;
         expr_ty c;
         if (
@@ -40561,7 +40898,7 @@ _tmp_258_rule(Parser *p)
             (c = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_258[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_262[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "',' star_target"));
             _res = c;
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
@@ -40571,7 +40908,7 @@ _tmp_258_rule(Parser *p)
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_258[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_262[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' star_target"));
     }
     _res = NULL;
@@ -40580,13 +40917,57 @@ _tmp_258_rule(Parser *p)
     return _res;
 }
 
-// _tmp_259: star_targets '='
+// _tmp_263:
+//     | ','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs
 static void *
-_tmp_259_rule(Parser *p)
+_tmp_263_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void * _res = NULL;
+    int _mark = p->mark;
+    { // ','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_263[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs"));
+        asdl_seq * _gather_274_var;
+        Token * _literal;
+        asdl_seq* kwargs_var;
+        if (
+            (_gather_274_var = _gather_274_rule(p))  // ','.(starred_expression | (assignment_expression | expression !':=') !'=')+
+            &&
+            (_literal = _PyPegen_expect_token(p, 12))  // token=','
+            &&
+            (kwargs_var = kwargs_rule(p))  // kwargs
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_263[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs"));
+            _res = _PyPegen_dummy_name(p, _gather_274_var, _literal, kwargs_var);
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_263[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "','.(starred_expression | (assignment_expression | expression !':=') !'=')+ ',' kwargs"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _tmp_264: star_targets '='
+static void *
+_tmp_264_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40599,7 +40980,7 @@ _tmp_259_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_259[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
+        D(fprintf(stderr, "%*c> _tmp_264[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
         Token * _literal;
         expr_ty star_targets_var;
         if (
@@ -40608,12 +40989,12 @@ _tmp_259_rule(Parser *p)
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_259[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
+            D(fprintf(stderr, "%*c+ _tmp_264[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
             _res = _PyPegen_dummy_name(p, star_targets_var, _literal);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_259[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_264[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_targets '='"));
     }
     _res = NULL;
@@ -40622,13 +41003,12 @@ _tmp_259_rule(Parser *p)
     return _res;
 }
 
-// _tmp_260: star_targets '='
+// _tmp_265: star_targets '='
 static void *
-_tmp_260_rule(Parser *p)
+_tmp_265_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40641,7 +41021,7 @@ _tmp_260_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_260[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
+        D(fprintf(stderr, "%*c> _tmp_265[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
         Token * _literal;
         expr_ty star_targets_var;
         if (
@@ -40650,12 +41030,12 @@ _tmp_260_rule(Parser *p)
             (_literal = _PyPegen_expect_token(p, 22))  // token='='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_260[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
+            D(fprintf(stderr, "%*c+ _tmp_265[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "star_targets '='"));
             _res = _PyPegen_dummy_name(p, star_targets_var, _literal);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_260[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_265[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "star_targets '='"));
     }
     _res = NULL;
@@ -40664,13 +41044,12 @@ _tmp_260_rule(Parser *p)
     return _res;
 }
 
-// _tmp_261: ')' | '**'
+// _tmp_266: ')' | '**'
 static void *
-_tmp_261_rule(Parser *p)
+_tmp_266_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40683,18 +41062,18 @@ _tmp_261_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_261[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
+        D(fprintf(stderr, "%*c> _tmp_266[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "')'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 8))  // token=')'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_261[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
+            D(fprintf(stderr, "%*c+ _tmp_266[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "')'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_261[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_266[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "')'"));
     }
     { // '**'
@@ -40702,18 +41081,18 @@ _tmp_261_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_261[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
+        D(fprintf(stderr, "%*c> _tmp_266[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 35))  // token='**'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_261[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
+            D(fprintf(stderr, "%*c+ _tmp_266[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_261[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_266[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'**'"));
     }
     _res = NULL;
@@ -40722,13 +41101,12 @@ _tmp_261_rule(Parser *p)
     return _res;
 }
 
-// _tmp_262: ':' | '**'
+// _tmp_267: ':' | '**'
 static void *
-_tmp_262_rule(Parser *p)
+_tmp_267_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40741,18 +41119,18 @@ _tmp_262_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_262[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
+        D(fprintf(stderr, "%*c> _tmp_267[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "':'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_262[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
+            D(fprintf(stderr, "%*c+ _tmp_267[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "':'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_262[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_267[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "':'"));
     }
     { // '**'
@@ -40760,18 +41138,18 @@ _tmp_262_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_262[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
+        D(fprintf(stderr, "%*c> _tmp_267[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'**'"));
         Token * _literal;
         if (
             (_literal = _PyPegen_expect_token(p, 35))  // token='**'
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_262[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
+            D(fprintf(stderr, "%*c+ _tmp_267[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'**'"));
             _res = _literal;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_262[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_267[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'**'"));
     }
     _res = NULL;
@@ -40780,13 +41158,12 @@ _tmp_262_rule(Parser *p)
     return _res;
 }
 
-// _tmp_263: expression ['as' star_target]
+// _tmp_268: expression ['as' star_target]
 static void *
-_tmp_263_rule(Parser *p)
+_tmp_268_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40799,22 +41176,22 @@ _tmp_263_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_263[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
+        D(fprintf(stderr, "%*c> _tmp_268[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty expression_var;
         if (
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var = _tmp_269_rule(p), !p->error_indicator)  // ['as' star_target]
+            (_opt_var = _tmp_276_rule(p), !p->error_indicator)  // ['as' star_target]
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_263[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
+            D(fprintf(stderr, "%*c+ _tmp_268[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
             _res = _PyPegen_dummy_name(p, expression_var, _opt_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_263[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_268[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression ['as' star_target]"));
     }
     _res = NULL;
@@ -40823,13 +41200,12 @@ _tmp_263_rule(Parser *p)
     return _res;
 }
 
-// _tmp_264: expressions ['as' star_target]
+// _tmp_269: expressions ['as' star_target]
 static void *
-_tmp_264_rule(Parser *p)
+_tmp_269_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40842,22 +41218,22 @@ _tmp_264_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_264[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
+        D(fprintf(stderr, "%*c> _tmp_269[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty expressions_var;
         if (
             (expressions_var = expressions_rule(p))  // expressions
             &&
-            (_opt_var = _tmp_270_rule(p), !p->error_indicator)  // ['as' star_target]
+            (_opt_var = _tmp_277_rule(p), !p->error_indicator)  // ['as' star_target]
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_264[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
+            D(fprintf(stderr, "%*c+ _tmp_269[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
             _res = _PyPegen_dummy_name(p, expressions_var, _opt_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_264[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_269[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expressions ['as' star_target]"));
     }
     _res = NULL;
@@ -40866,13 +41242,12 @@ _tmp_264_rule(Parser *p)
     return _res;
 }
 
-// _tmp_265: expression ['as' star_target]
+// _tmp_270: expression ['as' star_target]
 static void *
-_tmp_265_rule(Parser *p)
+_tmp_270_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40885,22 +41260,22 @@ _tmp_265_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_265[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
+        D(fprintf(stderr, "%*c> _tmp_270[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty expression_var;
         if (
             (expression_var = expression_rule(p))  // expression
             &&
-            (_opt_var = _tmp_271_rule(p), !p->error_indicator)  // ['as' star_target]
+            (_opt_var = _tmp_278_rule(p), !p->error_indicator)  // ['as' star_target]
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_265[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
+            D(fprintf(stderr, "%*c+ _tmp_270[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression ['as' star_target]"));
             _res = _PyPegen_dummy_name(p, expression_var, _opt_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_265[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_270[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression ['as' star_target]"));
     }
     _res = NULL;
@@ -40909,13 +41284,12 @@ _tmp_265_rule(Parser *p)
     return _res;
 }
 
-// _tmp_266: expressions ['as' star_target]
+// _tmp_271: expressions ['as' star_target]
 static void *
-_tmp_266_rule(Parser *p)
+_tmp_271_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40928,22 +41302,22 @@ _tmp_266_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_266[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
+        D(fprintf(stderr, "%*c> _tmp_271[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
         void *_opt_var;
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty expressions_var;
         if (
             (expressions_var = expressions_rule(p))  // expressions
             &&
-            (_opt_var = _tmp_272_rule(p), !p->error_indicator)  // ['as' star_target]
+            (_opt_var = _tmp_279_rule(p), !p->error_indicator)  // ['as' star_target]
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_266[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
+            D(fprintf(stderr, "%*c+ _tmp_271[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expressions ['as' star_target]"));
             _res = _PyPegen_dummy_name(p, expressions_var, _opt_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_266[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_271[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expressions ['as' star_target]"));
     }
     _res = NULL;
@@ -40952,13 +41326,12 @@ _tmp_266_rule(Parser *p)
     return _res;
 }
 
-// _tmp_267: 'as' NAME
+// _tmp_272: 'as' NAME
 static void *
-_tmp_267_rule(Parser *p)
+_tmp_272_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -40971,21 +41344,21 @@ _tmp_267_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_267[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+        D(fprintf(stderr, "%*c> _tmp_272[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_267[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
+            D(fprintf(stderr, "%*c+ _tmp_272[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' NAME"));
             _res = _PyPegen_dummy_name(p, _keyword, name_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_267[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_272[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' NAME"));
     }
     _res = NULL;
@@ -40994,13 +41367,12 @@ _tmp_267_rule(Parser *p)
     return _res;
 }
 
-// _tmp_268: assignment_expression | expression !':='
+// _tmp_273: assignment_expression | expression !':='
 static void *
-_tmp_268_rule(Parser *p)
+_tmp_273_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -41013,18 +41385,18 @@ _tmp_268_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_268[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
+        D(fprintf(stderr, "%*c> _tmp_273[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
         expr_ty assignment_expression_var;
         if (
             (assignment_expression_var = assignment_expression_rule(p))  // assignment_expression
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_268[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
+            D(fprintf(stderr, "%*c+ _tmp_273[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
             _res = assignment_expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_268[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_273[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "assignment_expression"));
     }
     { // expression !':='
@@ -41032,7 +41404,7 @@ _tmp_268_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_268[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression !':='"));
+        D(fprintf(stderr, "%*c> _tmp_273[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression !':='"));
         expr_ty expression_var;
         if (
             (expression_var = expression_rule(p))  // expression
@@ -41040,12 +41412,12 @@ _tmp_268_rule(Parser *p)
             _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 53)  // token=':='
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_268[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression !':='"));
+            D(fprintf(stderr, "%*c+ _tmp_273[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression !':='"));
             _res = expression_var;
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_268[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_273[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression !':='"));
     }
     _res = NULL;
@@ -41054,13 +41426,130 @@ _tmp_268_rule(Parser *p)
     return _res;
 }
 
-// _tmp_269: 'as' star_target
-static void *
-_tmp_269_rule(Parser *p)
+// _loop0_275: ',' (starred_expression | (assignment_expression | expression !':=') !'=')
+static asdl_seq *
+_loop0_275_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void *_res = NULL;
+    int _mark = p->mark;
+    void **_children = PyMem_Malloc(sizeof(void *));
+    if (!_children) {
         p->error_indicator = 1;
         PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    Py_ssize_t _children_capacity = 1;
+    Py_ssize_t _n = 0;
+    { // ',' (starred_expression | (assignment_expression | expression !':=') !'=')
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _loop0_275[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "',' (starred_expression | (assignment_expression | expression !':=') !'=')"));
+        Token * _literal;
+        void *elem;
+        while (
+            (_literal = _PyPegen_expect_token(p, 12))  // token=','
+            &&
+            (elem = _tmp_280_rule(p))  // starred_expression | (assignment_expression | expression !':=') !'='
+        )
+        {
+            _res = elem;
+            if (_res == NULL && PyErr_Occurred()) {
+                p->error_indicator = 1;
+                PyMem_Free(_children);
+                p->level--;
+                return NULL;
+            }
+            if (_n == _children_capacity) {
+                _children_capacity *= 2;
+                void **_new_children = PyMem_Realloc(_children, _children_capacity*sizeof(void *));
+                if (!_new_children) {
+                    PyMem_Free(_children);
+                    p->error_indicator = 1;
+                    PyErr_NoMemory();
+                    p->level--;
+                    return NULL;
+                }
+                _children = _new_children;
+            }
+            _children[_n++] = _res;
+            _mark = p->mark;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _loop0_275[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "',' (starred_expression | (assignment_expression | expression !':=') !'=')"));
+    }
+    asdl_seq *_seq = (asdl_seq*)_Py_asdl_generic_seq_new(_n, p->arena);
+    if (!_seq) {
+        PyMem_Free(_children);
+        p->error_indicator = 1;
+        PyErr_NoMemory();
+        p->level--;
+        return NULL;
+    }
+    for (int i = 0; i < _n; i++) asdl_seq_SET_UNTYPED(_seq, i, _children[i]);
+    PyMem_Free(_children);
+    p->level--;
+    return _seq;
+}
+
+// _gather_274:
+//     | (starred_expression | (assignment_expression | expression !':=') !'=') _loop0_275
+static asdl_seq *
+_gather_274_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    asdl_seq * _res = NULL;
+    int _mark = p->mark;
+    { // (starred_expression | (assignment_expression | expression !':=') !'=') _loop0_275
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _gather_274[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_275"));
+        void *elem;
+        asdl_seq * seq;
+        if (
+            (elem = _tmp_280_rule(p))  // starred_expression | (assignment_expression | expression !':=') !'='
+            &&
+            (seq = _loop0_275_rule(p))  // _loop0_275
+        )
+        {
+            D(fprintf(stderr, "%*c+ _gather_274[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_275"));
+            _res = _PyPegen_seq_insert_in_front(p, elem, seq);
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _gather_274[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(starred_expression | (assignment_expression | expression !':=') !'=') _loop0_275"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _tmp_276: 'as' star_target
+static void *
+_tmp_276_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -41073,21 +41562,21 @@ _tmp_269_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_269[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_276[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_269[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_276[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
             _res = _PyPegen_dummy_name(p, _keyword, star_target_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_269[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_276[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' star_target"));
     }
     _res = NULL;
@@ -41096,13 +41585,12 @@ _tmp_269_rule(Parser *p)
     return _res;
 }
 
-// _tmp_270: 'as' star_target
+// _tmp_277: 'as' star_target
 static void *
-_tmp_270_rule(Parser *p)
+_tmp_277_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -41115,21 +41603,21 @@ _tmp_270_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_270[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_277[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_270[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_277[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
             _res = _PyPegen_dummy_name(p, _keyword, star_target_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_270[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_277[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' star_target"));
     }
     _res = NULL;
@@ -41138,13 +41626,12 @@ _tmp_270_rule(Parser *p)
     return _res;
 }
 
-// _tmp_271: 'as' star_target
+// _tmp_278: 'as' star_target
 static void *
-_tmp_271_rule(Parser *p)
+_tmp_278_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -41157,21 +41644,21 @@ _tmp_271_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_271[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_278[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_271[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_278[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
             _res = _PyPegen_dummy_name(p, _keyword, star_target_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_271[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_278[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' star_target"));
     }
     _res = NULL;
@@ -41180,13 +41667,12 @@ _tmp_271_rule(Parser *p)
     return _res;
 }
 
-// _tmp_272: 'as' star_target
+// _tmp_279: 'as' star_target
 static void *
-_tmp_272_rule(Parser *p)
+_tmp_279_rule(Parser *p)
 {
     if (p->level++ == MAXSTACK) {
-        p->error_indicator = 1;
-        PyErr_NoMemory();
+        _Pypegen_stack_overflow(p);
     }
     if (p->error_indicator) {
         p->level--;
@@ -41199,21 +41685,21 @@ _tmp_272_rule(Parser *p)
             p->level--;
             return NULL;
         }
-        D(fprintf(stderr, "%*c> _tmp_272[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+        D(fprintf(stderr, "%*c> _tmp_279[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 640))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 656))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
         {
-            D(fprintf(stderr, "%*c+ _tmp_272[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
+            D(fprintf(stderr, "%*c+ _tmp_279[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'as' star_target"));
             _res = _PyPegen_dummy_name(p, _keyword, star_target_var);
             goto done;
         }
         p->mark = _mark;
-        D(fprintf(stderr, "%*c%s _tmp_272[%d-%d]: %s failed!\n", p->level, ' ',
+        D(fprintf(stderr, "%*c%s _tmp_279[%d-%d]: %s failed!\n", p->level, ' ',
                   p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'as' star_target"));
     }
     _res = NULL;
@@ -41222,6 +41708,124 @@ _tmp_272_rule(Parser *p)
     return _res;
 }
 
+// _tmp_280: starred_expression | (assignment_expression | expression !':=') !'='
+static void *
+_tmp_280_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void * _res = NULL;
+    int _mark = p->mark;
+    { // starred_expression
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_280[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "starred_expression"));
+        expr_ty starred_expression_var;
+        if (
+            (starred_expression_var = starred_expression_rule(p))  // starred_expression
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_280[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "starred_expression"));
+            _res = starred_expression_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_280[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "starred_expression"));
+    }
+    { // (assignment_expression | expression !':=') !'='
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_280[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
+        void *_tmp_281_var;
+        if (
+            (_tmp_281_var = _tmp_281_rule(p))  // assignment_expression | expression !':='
+            &&
+            _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 22)  // token='='
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_280[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
+            _res = _tmp_281_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_280[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "(assignment_expression | expression !':=') !'='"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
+// _tmp_281: assignment_expression | expression !':='
+static void *
+_tmp_281_rule(Parser *p)
+{
+    if (p->level++ == MAXSTACK) {
+        _Pypegen_stack_overflow(p);
+    }
+    if (p->error_indicator) {
+        p->level--;
+        return NULL;
+    }
+    void * _res = NULL;
+    int _mark = p->mark;
+    { // assignment_expression
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_281[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
+        expr_ty assignment_expression_var;
+        if (
+            (assignment_expression_var = assignment_expression_rule(p))  // assignment_expression
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_281[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "assignment_expression"));
+            _res = assignment_expression_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_281[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "assignment_expression"));
+    }
+    { // expression !':='
+        if (p->error_indicator) {
+            p->level--;
+            return NULL;
+        }
+        D(fprintf(stderr, "%*c> _tmp_281[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "expression !':='"));
+        expr_ty expression_var;
+        if (
+            (expression_var = expression_rule(p))  // expression
+            &&
+            _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 53)  // token=':='
+        )
+        {
+            D(fprintf(stderr, "%*c+ _tmp_281[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "expression !':='"));
+            _res = expression_var;
+            goto done;
+        }
+        p->mark = _mark;
+        D(fprintf(stderr, "%*c%s _tmp_281[%d-%d]: %s failed!\n", p->level, ' ',
+                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "expression !':='"));
+    }
+    _res = NULL;
+  done:
+    p->level--;
+    return _res;
+}
+
 void *
 _PyPegen_parse(Parser *p)
 {
@@ -41240,8 +41844,6 @@ _PyPegen_parse(Parser *p)
         result = eval_rule(p);
     } else if (p->start_rule == Py_func_type_input) {
         result = func_type_rule(p);
-    } else if (p->start_rule == Py_fstring_input) {
-        result = fstring_rule(p);
     }
 
     return result;
diff --git a/Parser/peg_api.c b/Parser/peg_api.c
index 1487ac4ff856c2..d4acc3e4935d10 100644
--- a/Parser/peg_api.c
+++ b/Parser/peg_api.c
@@ -1,6 +1,5 @@
 #include "Python.h"
 
-#include "tokenizer.h"
 #include "pegen.h"
 
 mod_ty
@@ -24,5 +23,18 @@ _PyParser_ASTFromFile(FILE *fp, PyObject *filename_ob, const char *enc,
         return NULL;
     }
     return _PyPegen_run_parser_from_file_pointer(fp, mode, filename_ob, enc, ps1, ps2,
-                                        flags, errcode, arena);
+                                        flags, errcode, NULL, arena);
 }
+
+mod_ty
+_PyParser_InteractiveASTFromFile(FILE *fp, PyObject *filename_ob, const char *enc,
+                                 int mode, const char *ps1, const char* ps2,
+                                 PyCompilerFlags *flags, int *errcode,
+                                 PyObject **interactive_src, PyArena *arena)
+{
+    if (PySys_Audit("compile", "OO", Py_None, filename_ob) < 0) {
+        return NULL;
+    }
+    return _PyPegen_run_parser_from_file_pointer(fp, mode, filename_ob, enc, ps1, ps2,
+                                                 flags, errcode, interactive_src, arena);
+}
\ No newline at end of file
diff --git a/Parser/pegen.c b/Parser/pegen.c
index da410ea84ecb8e..0c60394e4f199b 100644
--- a/Parser/pegen.c
+++ b/Parser/pegen.c
@@ -3,7 +3,8 @@
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include <errcode.h>
 
-#include "tokenizer.h"
+#include "lexer/lexer.h"
+#include "tokenizer/tokenizer.h"
 #include "pegen.h"
 
 // Internal parser functions
@@ -208,7 +209,7 @@ int
 _PyPegen_fill_token(Parser *p)
 {
     struct token new_token;
-    new_token.metadata = NULL;
+    _PyToken_Init(&new_token);
     int type = _PyTokenizer_Get(p->tok, &new_token);
 
     // Record and skip '# type: ignore' comments
@@ -251,7 +252,7 @@ _PyPegen_fill_token(Parser *p)
     Token *t = p->tokens[p->fill];
     return initialize_token(p, t, &new_token, type);
 error:
-    Py_XDECREF(new_token.metadata);
+    _PyToken_Free(&new_token);
     return -1;
 }
 
@@ -465,7 +466,6 @@ _PyPegen_new_identifier(Parser *p, const char *n)
        identifier; if so, normalize to NFKC. */
     if (!PyUnicode_IS_ASCII(id))
     {
-        PyObject *id2;
         if (!init_normalization(p))
         {
             Py_DECREF(id);
@@ -478,12 +478,13 @@ _PyPegen_new_identifier(Parser *p, const char *n)
             goto error;
         }
         PyObject *args[2] = {form, id};
-        id2 = _PyObject_FastCall(p->normalize, args, 2);
+        PyObject *id2 = PyObject_Vectorcall(p->normalize, args, 2, NULL);
         Py_DECREF(id);
         Py_DECREF(form);
         if (!id2) {
             goto error;
         }
+
         if (!PyUnicode_Check(id2))
         {
             PyErr_Format(PyExc_TypeError,
@@ -734,9 +735,6 @@ compute_parser_flags(PyCompilerFlags *flags)
     if (flags->cf_flags & PyCF_TYPE_COMMENTS) {
         parser_flags |= PyPARSE_TYPE_COMMENTS;
     }
-    if ((flags->cf_flags & PyCF_ONLY_AST) && flags->cf_feature_version < 7) {
-        parser_flags |= PyPARSE_ASYNC_HACKS;
-    }
     if (flags->cf_flags & PyCF_ALLOW_INCOMPLETE_INPUT) {
         parser_flags |= PyPARSE_ALLOW_INCOMPLETE_INPUT;
     }
@@ -755,7 +753,6 @@ _PyPegen_Parser_New(struct tok_state *tok, int start_rule, int flags,
     }
     assert(tok != NULL);
     tok->type_comments = (flags & PyPARSE_TYPE_COMMENTS) > 0;
-    tok->async_hacks = (flags & PyPARSE_ASYNC_HACKS) > 0;
     p->tok = tok;
     p->keywords = NULL;
     p->n_keyword_lists = -1;
@@ -881,7 +878,8 @@ _PyPegen_run_parser(Parser *p)
 mod_ty
 _PyPegen_run_parser_from_file_pointer(FILE *fp, int start_rule, PyObject *filename_ob,
                              const char *enc, const char *ps1, const char *ps2,
-                             PyCompilerFlags *flags, int *errcode, PyArena *arena)
+                             PyCompilerFlags *flags, int *errcode,
+                             PyObject **interactive_src, PyArena *arena)
 {
     struct tok_state *tok = _PyTokenizer_FromFile(fp, enc, ps1, ps2);
     if (tok == NULL) {
@@ -911,6 +909,15 @@ _PyPegen_run_parser_from_file_pointer(FILE *fp, int start_rule, PyObject *filena
     result = _PyPegen_run_parser(p);
     _PyPegen_Parser_Free(p);
 
+    if (tok->fp_interactive && tok->interactive_src_start && result && interactive_src != NULL) {
+        *interactive_src = PyUnicode_FromString(tok->interactive_src_start);
+        if (!interactive_src || _PyArena_AddPyObject(arena, *interactive_src) < 0) {
+            Py_XDECREF(interactive_src);
+            result = NULL;
+            goto error;
+        }
+    }
+
 error:
     _PyTokenizer_Free(tok);
     return result;
@@ -924,9 +931,9 @@ _PyPegen_run_parser_from_string(const char *str, int start_rule, PyObject *filen
 
     struct tok_state *tok;
     if (flags != NULL && flags->cf_flags & PyCF_IGNORE_COOKIE) {
-        tok = _PyTokenizer_FromUTF8(str, exec_input);
+        tok = _PyTokenizer_FromUTF8(str, exec_input, 0);
     } else {
-        tok = _PyTokenizer_FromString(str, exec_input);
+        tok = _PyTokenizer_FromString(str, exec_input, 0);
     }
     if (tok == NULL) {
         if (PyErr_Occurred()) {
diff --git a/Parser/pegen.h b/Parser/pegen.h
index 8800e9f97f5e04..424f80acd7be3b 100644
--- a/Parser/pegen.h
+++ b/Parser/pegen.h
@@ -1,7 +1,6 @@
 #ifndef PEGEN_H
 #define PEGEN_H
 
-#define PY_SSIZE_T_CLEAN
 #include <Python.h>
 #include <pycore_ast.h>
 #include <pycore_token.h>
@@ -21,7 +20,6 @@
 #define PyPARSE_IGNORE_COOKIE 0x0010
 #define PyPARSE_BARRY_AS_BDFL 0x0020
 #define PyPARSE_TYPE_COMMENTS 0x0040
-#define PyPARSE_ASYNC_HACKS   0x0080
 #define PyPARSE_ALLOW_INCOMPLETE_INPUT 0x0100
 
 #define CURRENT_POS (-5)
@@ -168,6 +166,8 @@ void *_PyPegen_raise_error_known_location(Parser *p, PyObject *errtype,
                                           Py_ssize_t end_lineno, Py_ssize_t end_col_offset,
                                           const char *errmsg, va_list va);
 void _Pypegen_set_syntax_error(Parser* p, Token* last_token);
+void _Pypegen_stack_overflow(Parser *p);
+
 Py_LOCAL_INLINE(void *)
 RAISE_ERROR_KNOWN_LOCATION(Parser *p, PyObject *errtype,
                            Py_ssize_t lineno, Py_ssize_t col_offset,
@@ -328,6 +328,7 @@ expr_ty _PyPegen_collect_call_seqs(Parser *, asdl_expr_seq *, asdl_seq *,
                      int lineno, int col_offset, int end_lineno,
                      int end_col_offset, PyArena *arena);
 expr_ty _PyPegen_constant_from_token(Parser* p, Token* tok);
+expr_ty _PyPegen_decoded_constant_from_token(Parser* p, Token* tok);
 expr_ty _PyPegen_constant_from_string(Parser* p, Token* tok);
 expr_ty _PyPegen_concatenate_strings(Parser *p, asdl_expr_seq *, int, int, int, int, PyArena *);
 expr_ty _PyPegen_FetchRawForm(Parser *p, int, int, int, int);
@@ -349,7 +350,8 @@ void *_PyPegen_nonparen_genexp_in_call(Parser *p, expr_ty args, asdl_comprehensi
 Parser *_PyPegen_Parser_New(struct tok_state *, int, int, int, int *, PyArena *);
 void _PyPegen_Parser_Free(Parser *);
 mod_ty _PyPegen_run_parser_from_file_pointer(FILE *, int, PyObject *, const char *,
-                                    const char *, const char *, PyCompilerFlags *, int *, PyArena *);
+                                    const char *, const char *, PyCompilerFlags *, int *, PyObject **,
+                                    PyArena *);
 void *_PyPegen_run_parser(Parser *);
 mod_ty _PyPegen_run_parser_from_string(const char *, int, PyObject *, PyCompilerFlags *, PyArena *);
 asdl_stmt_seq *_PyPegen_interactive_exit(Parser *);
diff --git a/Parser/pegen_errors.c b/Parser/pegen_errors.c
index 1f227da0194e3c..8a02aab1f4e504 100644
--- a/Parser/pegen_errors.c
+++ b/Parser/pegen_errors.c
@@ -1,7 +1,9 @@
 #include <Python.h>
 #include <errcode.h>
 
-#include "tokenizer.h"
+#include "pycore_pyerrors.h"      // _PyErr_ProgramDecodedTextObject()
+#include "lexer/state.h"
+#include "lexer/lexer.h"
 #include "pegen.h"
 
 // TOKENIZER ERRORS
@@ -66,6 +68,7 @@ _Pypegen_tokenizer_error(Parser *p)
     const char *msg = NULL;
     PyObject* errtype = PyExc_SyntaxError;
     Py_ssize_t col_offset = -1;
+    p->error_indicator = 1;
     switch (p->tok->done) {
         case E_TOKEN:
             msg = "invalid token";
@@ -101,6 +104,10 @@ _Pypegen_tokenizer_error(Parser *p)
             msg = "unexpected character after line continuation character";
             break;
         }
+        case E_COLUMNOVERFLOW:
+            PyErr_SetString(PyExc_OverflowError,
+                    "Parser column offset overflow - source line is too big");
+            return -1;
         default:
             msg = "unknown parsing error";
     }
@@ -165,7 +172,7 @@ _PyPegen_tokenize_full_source_to_check_for_errors(Parser *p) {
 
     int ret = 0;
     struct token new_token;
-    new_token.metadata = NULL;
+    _PyToken_Init(&new_token);
 
     for (;;) {
         switch (_PyTokenizer_Get(p->tok, &new_token)) {
@@ -193,7 +200,7 @@ _PyPegen_tokenize_full_source_to_check_for_errors(Parser *p) {
 
 
 exit:
-    Py_XDECREF(new_token.metadata);
+    _PyToken_Free(&new_token);
     // If we're in an f-string, we want the syntax error in the expression part
     // to propagate, so that tokenizer errors (like expecting '}') that happen afterwards
     // do not swallow it.
@@ -212,6 +219,10 @@ _PyPegen_tokenize_full_source_to_check_for_errors(Parser *p) {
 void *
 _PyPegen_raise_error(Parser *p, PyObject *errtype, int use_mark, const char *errmsg, ...)
 {
+    // Bail out if we already have an error set.
+    if (p->error_indicator && PyErr_Occurred()) {
+        return NULL;
+    }
     if (p->fill == 0) {
         va_list va;
         va_start(va, errmsg);
@@ -271,6 +282,10 @@ get_error_line_from_tokenizer_buffers(Parser *p, Py_ssize_t lineno)
     Py_ssize_t relative_lineno = p->starting_lineno ? lineno - p->starting_lineno + 1 : lineno;
     const char* buf_end = p->tok->fp_interactive ? p->tok->interactive_src_end : p->tok->inp;
 
+    if (buf_end < cur_line) {
+        buf_end = cur_line + strlen(cur_line);
+    }
+
     for (int i = 0; i < relative_lineno - 1; i++) {
         char *new_line = strchr(cur_line, '\n');
         // The assert is here for debug builds but the conditional that
@@ -309,21 +324,6 @@ _PyPegen_raise_error_known_location(Parser *p, PyObject *errtype,
         end_col_offset = p->tok->cur - p->tok->line_start;
     }
 
-    if (p->start_rule == Py_fstring_input) {
-        const char *fstring_msg = "f-string: ";
-        Py_ssize_t len = strlen(fstring_msg) + strlen(errmsg);
-
-        char *new_errmsg = PyMem_Malloc(len + 1); // Lengths of both strings plus NULL character
-        if (!new_errmsg) {
-            return (void *) PyErr_NoMemory();
-        }
-
-        // Copy both strings into new buffer
-        memcpy(new_errmsg, fstring_msg, strlen(fstring_msg));
-        memcpy(new_errmsg + strlen(fstring_msg), errmsg, strlen(errmsg));
-        new_errmsg[len] = 0;
-        errmsg = new_errmsg;
-    }
     errstr = PyUnicode_FromFormatV(errmsg, va);
     if (!errstr) {
         goto error;
@@ -362,11 +362,6 @@ _PyPegen_raise_error_known_location(Parser *p, PyObject *errtype,
         }
     }
 
-    if (p->start_rule == Py_fstring_input) {
-        col_offset -= p->starting_col_offset;
-        end_col_offset -= p->starting_col_offset;
-    }
-
     Py_ssize_t col_number = col_offset;
     Py_ssize_t end_col_number = end_col_offset;
 
@@ -397,23 +392,17 @@ _PyPegen_raise_error_known_location(Parser *p, PyObject *errtype,
 
     Py_DECREF(errstr);
     Py_DECREF(value);
-    if (p->start_rule == Py_fstring_input) {
-        PyMem_Free((void *)errmsg);
-    }
     return NULL;
 
 error:
     Py_XDECREF(errstr);
     Py_XDECREF(error_line);
-    if (p->start_rule == Py_fstring_input) {
-        PyMem_Free((void *)errmsg);
-    }
     return NULL;
 }
 
 void
 _Pypegen_set_syntax_error(Parser* p, Token* last_token) {
-    // Existing sintax error
+    // Existing syntax error
     if (PyErr_Occurred()) {
         // Prioritize tokenizer errors to custom syntax errors raised
         // on the second phase only if the errors come from the parser.
@@ -453,3 +442,11 @@ _Pypegen_set_syntax_error(Parser* p, Token* last_token) {
     // generic SyntaxError we just raised if errors are found.
     _PyPegen_tokenize_full_source_to_check_for_errors(p);
 }
+
+void
+_Pypegen_stack_overflow(Parser *p)
+{
+    p->error_indicator = 1;
+    PyErr_SetString(PyExc_MemoryError,
+        "Parser stack overflowed - Python source too complex to parse");
+}
diff --git a/Parser/string_parser.c b/Parser/string_parser.c
index d4ce33850f7c58..bacfd815441110 100644
--- a/Parser/string_parser.c
+++ b/Parser/string_parser.c
@@ -1,8 +1,10 @@
 #include <stdbool.h>
 
 #include <Python.h>
+#include "pycore_bytesobject.h"   // _PyBytes_DecodeEscape()
+#include "pycore_unicodeobject.h" // _PyUnicode_DecodeUnicodeEscapeInternal()
 
-#include "tokenizer.h"
+#include "lexer/state.h"
 #include "pegen.h"
 #include "string_parser.h"
 
@@ -11,7 +13,18 @@
 static int
 warn_invalid_escape_sequence(Parser *p, const char *first_invalid_escape, Token *t)
 {
+    if (p->call_invalid_rules) {
+        // Do not report warnings if we are in the second pass of the parser
+        // to avoid showing the warning twice.
+        return 0;
+    }
     unsigned char c = *first_invalid_escape;
+    if ((t->type == FSTRING_MIDDLE || t->type == FSTRING_END) && (c == '{' || c == '}')) {
+        // in this case the tokenizer has already emitted a warning,
+        // see Parser/tokenizer/helpers.c:warn_invalid_escape_sequence
+        return 0;
+    }
+
     int octal = ('4' <= c && c <= '7');
     PyObject *msg =
         octal
@@ -31,7 +44,7 @@ warn_invalid_escape_sequence(Parser *p, const char *first_invalid_escape, Token
     if (PyErr_WarnExplicitObject(category, msg, p->tok->filename,
                                  t->lineno, NULL, NULL) < 0) {
         if (PyErr_ExceptionMatches(category)) {
-            /* Replace the DeprecationWarning exception with a SyntaxError
+            /* Replace the Syntax/DeprecationWarning exception with a SyntaxError
                to get a more accurate error report */
             PyErr_Clear();
 
diff --git a/Parser/token.c b/Parser/token.c
index 82267fbfcd0c54..4f163f21609a0a 100644
--- a/Parser/token.c
+++ b/Parser/token.c
@@ -62,17 +62,15 @@ const char * const _PyParser_TokenNames[] = {
     "COLONEQUAL",
     "EXCLAMATION",
     "OP",
-    "AWAIT",
-    "ASYNC",
     "TYPE_IGNORE",
     "TYPE_COMMENT",
     "SOFT_KEYWORD",
     "FSTRING_START",
     "FSTRING_MIDDLE",
     "FSTRING_END",
+    "COMMENT",
+    "NL",
     "<ERRORTOKEN>",
-    "<COMMENT>",
-    "<NL>",
     "<ENCODING>",
     "<N_TOKENS>",
 };
diff --git a/Parser/tokenizer.c b/Parser/tokenizer.c
deleted file mode 100644
index 91ffabac56c7b3..00000000000000
--- a/Parser/tokenizer.c
+++ /dev/null
@@ -1,2809 +0,0 @@
-
-/* Tokenizer implementation */
-
-#define PY_SSIZE_T_CLEAN
-#include "Python.h"
-#include "pycore_call.h"          // _PyObject_CallNoArgs()
-
-#include <ctype.h>
-#include <assert.h>
-
-#include "tokenizer.h"
-#include "errcode.h"
-
-/* Alternate tab spacing */
-#define ALTTABSIZE 1
-
-#define is_potential_identifier_start(c) (\
-              (c >= 'a' && c <= 'z')\
-               || (c >= 'A' && c <= 'Z')\
-               || c == '_'\
-               || (c >= 128))
-
-#define is_potential_identifier_char(c) (\
-              (c >= 'a' && c <= 'z')\
-               || (c >= 'A' && c <= 'Z')\
-               || (c >= '0' && c <= '9')\
-               || c == '_'\
-               || (c >= 128))
-
-
-/* Don't ever change this -- it would break the portability of Python code */
-#define TABSIZE 8
-
-#define MAKE_TOKEN(token_type) token_setup(tok, token, token_type, p_start, p_end)
-#define MAKE_TYPE_COMMENT_TOKEN(token_type, col_offset, end_col_offset) (\
-                type_comment_token_setup(tok, token, token_type, col_offset, end_col_offset, p_start, p_end))
-#define ADVANCE_LINENO() \
-            tok->lineno++; \
-            tok->col_offset = 0;
-
-#define INSIDE_FSTRING(tok) (tok->tok_mode_stack_index > 0)
-#define INSIDE_FSTRING_EXPR(tok) (tok->curly_bracket_expr_start_depth >= 0)
-#ifdef Py_DEBUG
-static inline tokenizer_mode* TOK_GET_MODE(struct tok_state* tok) {
-    assert(tok->tok_mode_stack_index >= 0);
-    assert(tok->tok_mode_stack_index < MAXFSTRINGLEVEL);
-    return &(tok->tok_mode_stack[tok->tok_mode_stack_index]);
-}
-static inline tokenizer_mode* TOK_NEXT_MODE(struct tok_state* tok) {
-    assert(tok->tok_mode_stack_index >= 0);
-    assert(tok->tok_mode_stack_index + 1 < MAXFSTRINGLEVEL);
-    return &(tok->tok_mode_stack[++tok->tok_mode_stack_index]);
-}
-#else
-#define TOK_GET_MODE(tok) (&(tok->tok_mode_stack[tok->tok_mode_stack_index]))
-#define TOK_NEXT_MODE(tok) (&(tok->tok_mode_stack[++tok->tok_mode_stack_index]))
-#endif
-
-/* Forward */
-static struct tok_state *tok_new(void);
-static int tok_nextc(struct tok_state *tok);
-static void tok_backup(struct tok_state *tok, int c);
-static int syntaxerror(struct tok_state *tok, const char *format, ...);
-
-/* Spaces in this constant are treated as "zero or more spaces or tabs" when
-   tokenizing. */
-static const char* type_comment_prefix = "# type: ";
-
-/* Create and initialize a new tok_state structure */
-
-static struct tok_state *
-tok_new(void)
-{
-    struct tok_state *tok = (struct tok_state *)PyMem_Malloc(
-                                            sizeof(struct tok_state));
-    if (tok == NULL)
-        return NULL;
-    tok->buf = tok->cur = tok->inp = NULL;
-    tok->fp_interactive = 0;
-    tok->interactive_src_start = NULL;
-    tok->interactive_src_end = NULL;
-    tok->start = NULL;
-    tok->end = NULL;
-    tok->done = E_OK;
-    tok->fp = NULL;
-    tok->input = NULL;
-    tok->tabsize = TABSIZE;
-    tok->indent = 0;
-    tok->indstack[0] = 0;
-    tok->atbol = 1;
-    tok->pendin = 0;
-    tok->prompt = tok->nextprompt = NULL;
-    tok->lineno = 0;
-    tok->starting_col_offset = -1;
-    tok->col_offset = -1;
-    tok->level = 0;
-    tok->altindstack[0] = 0;
-    tok->decoding_state = STATE_INIT;
-    tok->decoding_erred = 0;
-    tok->enc = NULL;
-    tok->encoding = NULL;
-    tok->cont_line = 0;
-    tok->filename = NULL;
-    tok->decoding_readline = NULL;
-    tok->decoding_buffer = NULL;
-    tok->type_comments = 0;
-    tok->async_hacks = 0;
-    tok->async_def = 0;
-    tok->async_def_indent = 0;
-    tok->async_def_nl = 0;
-    tok->interactive_underflow = IUNDERFLOW_NORMAL;
-    tok->str = NULL;
-    tok->report_warnings = 1;
-    tok->tok_mode_stack[0] = (tokenizer_mode){.kind =TOK_REGULAR_MODE, .f_string_quote='\0', .f_string_quote_size = 0, .f_string_debug=0};
-    tok->tok_mode_stack_index = 0;
-    tok->tok_report_warnings = 1;
-#ifdef Py_DEBUG
-    tok->debug = _Py_GetConfig()->parser_debug;
-#endif
-    return tok;
-}
-
-static char *
-new_string(const char *s, Py_ssize_t len, struct tok_state *tok)
-{
-    char* result = (char *)PyMem_Malloc(len + 1);
-    if (!result) {
-        tok->done = E_NOMEM;
-        return NULL;
-    }
-    memcpy(result, s, len);
-    result[len] = '\0';
-    return result;
-}
-
-static char *
-error_ret(struct tok_state *tok) /* XXX */
-{
-    tok->decoding_erred = 1;
-    if (tok->fp != NULL && tok->buf != NULL) /* see _PyTokenizer_Free */
-        PyMem_Free(tok->buf);
-    tok->buf = tok->cur = tok->inp = NULL;
-    tok->start = NULL;
-    tok->end = NULL;
-    tok->done = E_DECODE;
-    return NULL;                /* as if it were EOF */
-}
-
-
-static const char *
-get_normal_name(const char *s)  /* for utf-8 and latin-1 */
-{
-    char buf[13];
-    int i;
-    for (i = 0; i < 12; i++) {
-        int c = s[i];
-        if (c == '\0')
-            break;
-        else if (c == '_')
-            buf[i] = '-';
-        else
-            buf[i] = tolower(c);
-    }
-    buf[i] = '\0';
-    if (strcmp(buf, "utf-8") == 0 ||
-        strncmp(buf, "utf-8-", 6) == 0)
-        return "utf-8";
-    else if (strcmp(buf, "latin-1") == 0 ||
-             strcmp(buf, "iso-8859-1") == 0 ||
-             strcmp(buf, "iso-latin-1") == 0 ||
-             strncmp(buf, "latin-1-", 8) == 0 ||
-             strncmp(buf, "iso-8859-1-", 11) == 0 ||
-             strncmp(buf, "iso-latin-1-", 12) == 0)
-        return "iso-8859-1";
-    else
-        return s;
-}
-
-/* Return the coding spec in S, or NULL if none is found.  */
-
-static int
-get_coding_spec(const char *s, char **spec, Py_ssize_t size, struct tok_state *tok)
-{
-    Py_ssize_t i;
-    *spec = NULL;
-    /* Coding spec must be in a comment, and that comment must be
-     * the only statement on the source code line. */
-    for (i = 0; i < size - 6; i++) {
-        if (s[i] == '#')
-            break;
-        if (s[i] != ' ' && s[i] != '\t' && s[i] != '\014')
-            return 1;
-    }
-    for (; i < size - 6; i++) { /* XXX inefficient search */
-        const char* t = s + i;
-        if (memcmp(t, "coding", 6) == 0) {
-            const char* begin = NULL;
-            t += 6;
-            if (t[0] != ':' && t[0] != '=')
-                continue;
-            do {
-                t++;
-            } while (t[0] == ' ' || t[0] == '\t');
-
-            begin = t;
-            while (Py_ISALNUM(t[0]) ||
-                   t[0] == '-' || t[0] == '_' || t[0] == '.')
-                t++;
-
-            if (begin < t) {
-                char* r = new_string(begin, t - begin, tok);
-                const char* q;
-                if (!r)
-                    return 0;
-                q = get_normal_name(r);
-                if (r != q) {
-                    PyMem_Free(r);
-                    r = new_string(q, strlen(q), tok);
-                    if (!r)
-                        return 0;
-                }
-                *spec = r;
-                break;
-            }
-        }
-    }
-    return 1;
-}
-
-/* Check whether the line contains a coding spec. If it does,
-   invoke the set_readline function for the new encoding.
-   This function receives the tok_state and the new encoding.
-   Return 1 on success, 0 on failure.  */
-
-static int
-check_coding_spec(const char* line, Py_ssize_t size, struct tok_state *tok,
-                  int set_readline(struct tok_state *, const char *))
-{
-    char *cs;
-    if (tok->cont_line) {
-        /* It's a continuation line, so it can't be a coding spec. */
-        tok->decoding_state = STATE_NORMAL;
-        return 1;
-    }
-    if (!get_coding_spec(line, &cs, size, tok)) {
-        return 0;
-    }
-    if (!cs) {
-        Py_ssize_t i;
-        for (i = 0; i < size; i++) {
-            if (line[i] == '#' || line[i] == '\n' || line[i] == '\r')
-                break;
-            if (line[i] != ' ' && line[i] != '\t' && line[i] != '\014') {
-                /* Stop checking coding spec after a line containing
-                 * anything except a comment. */
-                tok->decoding_state = STATE_NORMAL;
-                break;
-            }
-        }
-        return 1;
-    }
-    tok->decoding_state = STATE_NORMAL;
-    if (tok->encoding == NULL) {
-        assert(tok->decoding_readline == NULL);
-        if (strcmp(cs, "utf-8") != 0 && !set_readline(tok, cs)) {
-            error_ret(tok);
-            PyErr_Format(PyExc_SyntaxError, "encoding problem: %s", cs);
-            PyMem_Free(cs);
-            return 0;
-        }
-        tok->encoding = cs;
-    } else {                /* then, compare cs with BOM */
-        if (strcmp(tok->encoding, cs) != 0) {
-            error_ret(tok);
-            PyErr_Format(PyExc_SyntaxError,
-                         "encoding problem: %s with BOM", cs);
-            PyMem_Free(cs);
-            return 0;
-        }
-        PyMem_Free(cs);
-    }
-    return 1;
-}
-
-/* See whether the file starts with a BOM. If it does,
-   invoke the set_readline function with the new encoding.
-   Return 1 on success, 0 on failure.  */
-
-static int
-check_bom(int get_char(struct tok_state *),
-          void unget_char(int, struct tok_state *),
-          int set_readline(struct tok_state *, const char *),
-          struct tok_state *tok)
-{
-    int ch1, ch2, ch3;
-    ch1 = get_char(tok);
-    tok->decoding_state = STATE_SEEK_CODING;
-    if (ch1 == EOF) {
-        return 1;
-    } else if (ch1 == 0xEF) {
-        ch2 = get_char(tok);
-        if (ch2 != 0xBB) {
-            unget_char(ch2, tok);
-            unget_char(ch1, tok);
-            return 1;
-        }
-        ch3 = get_char(tok);
-        if (ch3 != 0xBF) {
-            unget_char(ch3, tok);
-            unget_char(ch2, tok);
-            unget_char(ch1, tok);
-            return 1;
-        }
-    } else {
-        unget_char(ch1, tok);
-        return 1;
-    }
-    if (tok->encoding != NULL)
-        PyMem_Free(tok->encoding);
-    tok->encoding = new_string("utf-8", 5, tok);
-    if (!tok->encoding)
-        return 0;
-    /* No need to set_readline: input is already utf-8 */
-    return 1;
-}
-
-static int
-tok_concatenate_interactive_new_line(struct tok_state *tok, const char *line) {
-    assert(tok->fp_interactive);
-
-    if (!line) {
-        return 0;
-    }
-
-    Py_ssize_t current_size = tok->interactive_src_end - tok->interactive_src_start;
-    Py_ssize_t line_size = strlen(line);
-    char last_char = line[line_size > 0 ? line_size - 1 : line_size];
-    if (last_char != '\n') {
-        line_size += 1;
-    }
-    char* new_str = tok->interactive_src_start;
-
-    new_str = PyMem_Realloc(new_str, current_size + line_size + 1);
-    if (!new_str) {
-        if (tok->interactive_src_start) {
-            PyMem_Free(tok->interactive_src_start);
-        }
-        tok->interactive_src_start = NULL;
-        tok->interactive_src_end = NULL;
-        tok->done = E_NOMEM;
-        return -1;
-    }
-    strcpy(new_str + current_size, line);
-    if (last_char != '\n') {
-        /* Last line does not end in \n, fake one */
-        new_str[current_size + line_size - 1] = '\n';
-        new_str[current_size + line_size] = '\0';
-    }
-    tok->interactive_src_start = new_str;
-    tok->interactive_src_end = new_str + current_size + line_size;
-    return 0;
-}
-
-/* Traverse and remember all f-string buffers, in order to be able to restore
-   them after reallocating tok->buf */
-static void
-remember_fstring_buffers(struct tok_state *tok)
-{
-    int index;
-    tokenizer_mode *mode;
-
-    for (index = tok->tok_mode_stack_index; index >= 0; --index) {
-        mode = &(tok->tok_mode_stack[index]);
-        mode->f_string_start_offset = mode->f_string_start - tok->buf;
-        mode->f_string_multi_line_start_offset = mode->f_string_multi_line_start - tok->buf;
-    }
-}
-
-/* Traverse and restore all f-string buffers after reallocating tok->buf */
-static void
-restore_fstring_buffers(struct tok_state *tok)
-{
-    int index;
-    tokenizer_mode *mode;
-
-    for (index = tok->tok_mode_stack_index; index >= 0; --index) {
-        mode = &(tok->tok_mode_stack[index]);
-        mode->f_string_start = tok->buf + mode->f_string_start_offset;
-        mode->f_string_multi_line_start = tok->buf + mode->f_string_multi_line_start_offset;
-    }
-}
-
-static int
-set_fstring_expr(struct tok_state* tok, struct token *token, char c) {
-    assert(token != NULL);
-    assert(c == '}' || c == ':' || c == '!');
-    tokenizer_mode *tok_mode = TOK_GET_MODE(tok);
-
-    if (!tok_mode->f_string_debug || token->metadata) {
-        return 0;
-    }
-
-    PyObject *res = PyUnicode_DecodeUTF8(
-        tok_mode->last_expr_buffer,
-        tok_mode->last_expr_size - tok_mode->last_expr_end,
-        NULL
-    );
-    if (!res) {
-        return -1;
-    }
-    token->metadata = res;
-    return 0;
-}
-
-static int
-update_fstring_expr(struct tok_state *tok, char cur)
-{
-    assert(tok->cur != NULL);
-
-    Py_ssize_t size = strlen(tok->cur);
-    tokenizer_mode *tok_mode = TOK_GET_MODE(tok);
-
-    switch (cur) {
-       case 0:
-            if (!tok_mode->last_expr_buffer || tok_mode->last_expr_end >= 0) {
-                return 1;
-            }
-            char *new_buffer = PyMem_Realloc(
-                tok_mode->last_expr_buffer,
-                tok_mode->last_expr_size + size
-            );
-            if (new_buffer == NULL) {
-                PyMem_Free(tok_mode->last_expr_buffer);
-                goto error;
-            }
-            tok_mode->last_expr_buffer = new_buffer;
-            strncpy(tok_mode->last_expr_buffer + tok_mode->last_expr_size, tok->cur, size);
-            tok_mode->last_expr_size += size;
-            break;
-        case '{':
-            if (tok_mode->last_expr_buffer != NULL) {
-                PyMem_Free(tok_mode->last_expr_buffer);
-            }
-            tok_mode->last_expr_buffer = PyMem_Malloc(size);
-            if (tok_mode->last_expr_buffer == NULL) {
-                goto error;
-            }
-            tok_mode->last_expr_size = size;
-            tok_mode->last_expr_end = -1;
-            strncpy(tok_mode->last_expr_buffer, tok->cur, size);
-            break;
-        case '}':
-        case '!':
-        case ':':
-            if (tok_mode->last_expr_end == -1) {
-                tok_mode->last_expr_end = strlen(tok->start);
-            }
-            break;
-        default:
-            Py_UNREACHABLE();
-    }
-    return 1;
-error:
-    tok->done = E_NOMEM;
-    return 0;
-}
-
-static void
-free_fstring_expressions(struct tok_state *tok)
-{
-    int index;
-    tokenizer_mode *mode;
-
-    for (index = tok->tok_mode_stack_index; index >= 0; --index) {
-        mode = &(tok->tok_mode_stack[index]);
-        if (mode->last_expr_buffer != NULL) {
-            PyMem_Free(mode->last_expr_buffer);
-            mode->last_expr_buffer = NULL;
-            mode->last_expr_size = 0;
-            mode->last_expr_end = -1;
-        }
-    }
-}
-
-/* Read a line of text from TOK into S, using the stream in TOK.
-   Return NULL on failure, else S.
-
-   On entry, tok->decoding_buffer will be one of:
-     1) NULL: need to call tok->decoding_readline to get a new line
-     2) PyUnicodeObject *: decoding_feof has called tok->decoding_readline and
-       stored the result in tok->decoding_buffer
-     3) PyByteArrayObject *: previous call to tok_readline_recode did not have enough room
-       (in the s buffer) to copy entire contents of the line read
-       by tok->decoding_readline.  tok->decoding_buffer has the overflow.
-       In this case, tok_readline_recode is called in a loop (with an expanded buffer)
-       until the buffer ends with a '\n' (or until the end of the file is
-       reached): see tok_nextc and its calls to tok_reserve_buf.
-*/
-
-static int
-tok_reserve_buf(struct tok_state *tok, Py_ssize_t size)
-{
-    Py_ssize_t cur = tok->cur - tok->buf;
-    Py_ssize_t oldsize = tok->inp - tok->buf;
-    Py_ssize_t newsize = oldsize + Py_MAX(size, oldsize >> 1);
-    if (newsize > tok->end - tok->buf) {
-        char *newbuf = tok->buf;
-        Py_ssize_t start = tok->start == NULL ? -1 : tok->start - tok->buf;
-        Py_ssize_t line_start = tok->start == NULL ? -1 : tok->line_start - tok->buf;
-        Py_ssize_t multi_line_start = tok->multi_line_start - tok->buf;
-        remember_fstring_buffers(tok);
-        newbuf = (char *)PyMem_Realloc(newbuf, newsize);
-        if (newbuf == NULL) {
-            tok->done = E_NOMEM;
-            return 0;
-        }
-        tok->buf = newbuf;
-        tok->cur = tok->buf + cur;
-        tok->inp = tok->buf + oldsize;
-        tok->end = tok->buf + newsize;
-        tok->start = start < 0 ? NULL : tok->buf + start;
-        tok->line_start = line_start < 0 ? NULL : tok->buf + line_start;
-        tok->multi_line_start = multi_line_start < 0 ? NULL : tok->buf + multi_line_start;
-        restore_fstring_buffers(tok);
-    }
-    return 1;
-}
-
-static inline int
-contains_null_bytes(const char* str, size_t size) {
-    return memchr(str, 0, size) != NULL;
-}
-
-static int
-tok_readline_recode(struct tok_state *tok) {
-    PyObject *line;
-    const  char *buf;
-    Py_ssize_t buflen;
-    line = tok->decoding_buffer;
-    if (line == NULL) {
-        line = PyObject_CallNoArgs(tok->decoding_readline);
-        if (line == NULL) {
-            error_ret(tok);
-            goto error;
-        }
-    }
-    else {
-        tok->decoding_buffer = NULL;
-    }
-    buf = PyUnicode_AsUTF8AndSize(line, &buflen);
-    if (buf == NULL) {
-        error_ret(tok);
-        goto error;
-    }
-    // Make room for the null terminator *and* potentially
-    // an extra newline character that we may need to artificially
-    // add.
-    size_t buffer_size = buflen + 2;
-    if (!tok_reserve_buf(tok, buffer_size)) {
-        goto error;
-    }
-    memcpy(tok->inp, buf, buflen);
-    tok->inp += buflen;
-    *tok->inp = '\0';
-    if (tok->fp_interactive &&
-        tok_concatenate_interactive_new_line(tok, buf) == -1) {
-        goto error;
-    }
-    Py_DECREF(line);
-    return 1;
-error:
-    Py_XDECREF(line);
-    return 0;
-}
-
-/* Set the readline function for TOK to a StreamReader's
-   readline function. The StreamReader is named ENC.
-
-   This function is called from check_bom and check_coding_spec.
-
-   ENC is usually identical to the future value of tok->encoding,
-   except for the (currently unsupported) case of UTF-16.
-
-   Return 1 on success, 0 on failure. */
-
-static int
-fp_setreadl(struct tok_state *tok, const char* enc)
-{
-    PyObject *readline, *open, *stream;
-    int fd;
-    long pos;
-
-    fd = fileno(tok->fp);
-    /* Due to buffering the file offset for fd can be different from the file
-     * position of tok->fp.  If tok->fp was opened in text mode on Windows,
-     * its file position counts CRLF as one char and can't be directly mapped
-     * to the file offset for fd.  Instead we step back one byte and read to
-     * the end of line.*/
-    pos = ftell(tok->fp);
-    if (pos == -1 ||
-        lseek(fd, (off_t)(pos > 0 ? pos - 1 : pos), SEEK_SET) == (off_t)-1) {
-        PyErr_SetFromErrnoWithFilename(PyExc_OSError, NULL);
-        return 0;
-    }
-
-    open = _PyImport_GetModuleAttrString("io", "open");
-    if (open == NULL) {
-        return 0;
-    }
-    stream = PyObject_CallFunction(open, "isisOOO",
-                    fd, "r", -1, enc, Py_None, Py_None, Py_False);
-    Py_DECREF(open);
-    if (stream == NULL) {
-        return 0;
-    }
-
-    readline = PyObject_GetAttr(stream, &_Py_ID(readline));
-    Py_DECREF(stream);
-    if (readline == NULL) {
-        return 0;
-    }
-    Py_XSETREF(tok->decoding_readline, readline);
-
-    if (pos > 0) {
-        PyObject *bufobj = _PyObject_CallNoArgs(readline);
-        if (bufobj == NULL) {
-            return 0;
-        }
-        Py_DECREF(bufobj);
-    }
-
-    return 1;
-}
-
-/* Fetch the next byte from TOK. */
-
-static int fp_getc(struct tok_state *tok) {
-    return getc(tok->fp);
-}
-
-/* Unfetch the last byte back into TOK.  */
-
-static void fp_ungetc(int c, struct tok_state *tok) {
-    ungetc(c, tok->fp);
-}
-
-/* Check whether the characters at s start a valid
-   UTF-8 sequence. Return the number of characters forming
-   the sequence if yes, 0 if not.  The special cases match
-   those in stringlib/codecs.h:utf8_decode.
-*/
-static int
-valid_utf8(const unsigned char* s)
-{
-    int expected = 0;
-    int length;
-    if (*s < 0x80) {
-        /* single-byte code */
-        return 1;
-    }
-    else if (*s < 0xE0) {
-        /* \xC2\x80-\xDF\xBF -- 0080-07FF */
-        if (*s < 0xC2) {
-            /* invalid sequence
-               \x80-\xBF -- continuation byte
-               \xC0-\xC1 -- fake 0000-007F */
-            return 0;
-        }
-        expected = 1;
-    }
-    else if (*s < 0xF0) {
-        /* \xE0\xA0\x80-\xEF\xBF\xBF -- 0800-FFFF */
-        if (*s == 0xE0 && *(s + 1) < 0xA0) {
-            /* invalid sequence
-               \xE0\x80\x80-\xE0\x9F\xBF -- fake 0000-0800 */
-            return 0;
-        }
-        else if (*s == 0xED && *(s + 1) >= 0xA0) {
-            /* Decoding UTF-8 sequences in range \xED\xA0\x80-\xED\xBF\xBF
-               will result in surrogates in range D800-DFFF. Surrogates are
-               not valid UTF-8 so they are rejected.
-               See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf
-               (table 3-7) and http://www.rfc-editor.org/rfc/rfc3629.txt */
-            return 0;
-        }
-        expected = 2;
-    }
-    else if (*s < 0xF5) {
-        /* \xF0\x90\x80\x80-\xF4\x8F\xBF\xBF -- 10000-10FFFF */
-        if (*(s + 1) < 0x90 ? *s == 0xF0 : *s == 0xF4) {
-            /* invalid sequence -- one of:
-               \xF0\x80\x80\x80-\xF0\x8F\xBF\xBF -- fake 0000-FFFF
-               \xF4\x90\x80\x80- -- 110000- overflow */
-            return 0;
-        }
-        expected = 3;
-    }
-    else {
-        /* invalid start byte */
-        return 0;
-    }
-    length = expected + 1;
-    for (; expected; expected--)
-        if (s[expected] < 0x80 || s[expected] >= 0xC0)
-            return 0;
-    return length;
-}
-
-static int
-ensure_utf8(char *line, struct tok_state *tok)
-{
-    int badchar = 0;
-    unsigned char *c;
-    int length;
-    for (c = (unsigned char *)line; *c; c += length) {
-        if (!(length = valid_utf8(c))) {
-            badchar = *c;
-            break;
-        }
-    }
-    if (badchar) {
-        PyErr_Format(PyExc_SyntaxError,
-                     "Non-UTF-8 code starting with '\\x%.2x' "
-                     "in file %U on line %i, "
-                     "but no encoding declared; "
-                     "see https://peps.python.org/pep-0263/ for details",
-                     badchar, tok->filename, tok->lineno);
-        return 0;
-    }
-    return 1;
-}
-
-/* Fetch a byte from TOK, using the string buffer. */
-
-static int
-buf_getc(struct tok_state *tok) {
-    return Py_CHARMASK(*tok->str++);
-}
-
-/* Unfetch a byte from TOK, using the string buffer. */
-
-static void
-buf_ungetc(int c, struct tok_state *tok) {
-    tok->str--;
-    assert(Py_CHARMASK(*tok->str) == c);        /* tok->cur may point to read-only segment */
-}
-
-/* Set the readline function for TOK to ENC. For the string-based
-   tokenizer, this means to just record the encoding. */
-
-static int
-buf_setreadl(struct tok_state *tok, const char* enc) {
-    tok->enc = enc;
-    return 1;
-}
-
-/* Return a UTF-8 encoding Python string object from the
-   C byte string STR, which is encoded with ENC. */
-
-static PyObject *
-translate_into_utf8(const char* str, const char* enc) {
-    PyObject *utf8;
-    PyObject* buf = PyUnicode_Decode(str, strlen(str), enc, NULL);
-    if (buf == NULL)
-        return NULL;
-    utf8 = PyUnicode_AsUTF8String(buf);
-    Py_DECREF(buf);
-    return utf8;
-}
-
-
-static char *
-translate_newlines(const char *s, int exec_input, struct tok_state *tok) {
-    int skip_next_lf = 0;
-    size_t needed_length = strlen(s) + 2, final_length;
-    char *buf, *current;
-    char c = '\0';
-    buf = PyMem_Malloc(needed_length);
-    if (buf == NULL) {
-        tok->done = E_NOMEM;
-        return NULL;
-    }
-    for (current = buf; *s; s++, current++) {
-        c = *s;
-        if (skip_next_lf) {
-            skip_next_lf = 0;
-            if (c == '\n') {
-                c = *++s;
-                if (!c)
-                    break;
-            }
-        }
-        if (c == '\r') {
-            skip_next_lf = 1;
-            c = '\n';
-        }
-        *current = c;
-    }
-    /* If this is exec input, add a newline to the end of the string if
-       there isn't one already. */
-    if (exec_input && c != '\n') {
-        *current = '\n';
-        current++;
-    }
-    *current = '\0';
-    final_length = current - buf + 1;
-    if (final_length < needed_length && final_length) {
-        /* should never fail */
-        char* result = PyMem_Realloc(buf, final_length);
-        if (result == NULL) {
-            PyMem_Free(buf);
-        }
-        buf = result;
-    }
-    return buf;
-}
-
-/* Decode a byte string STR for use as the buffer of TOK.
-   Look for encoding declarations inside STR, and record them
-   inside TOK.  */
-
-static char *
-decode_str(const char *input, int single, struct tok_state *tok)
-{
-    PyObject* utf8 = NULL;
-    char *str;
-    const char *s;
-    const char *newl[2] = {NULL, NULL};
-    int lineno = 0;
-    tok->input = str = translate_newlines(input, single, tok);
-    if (str == NULL)
-        return NULL;
-    tok->enc = NULL;
-    tok->str = str;
-    if (!check_bom(buf_getc, buf_ungetc, buf_setreadl, tok))
-        return error_ret(tok);
-    str = tok->str;             /* string after BOM if any */
-    assert(str);
-    if (tok->enc != NULL) {
-        utf8 = translate_into_utf8(str, tok->enc);
-        if (utf8 == NULL)
-            return error_ret(tok);
-        str = PyBytes_AsString(utf8);
-    }
-    for (s = str;; s++) {
-        if (*s == '\0') break;
-        else if (*s == '\n') {
-            assert(lineno < 2);
-            newl[lineno] = s;
-            lineno++;
-            if (lineno == 2) break;
-        }
-    }
-    tok->enc = NULL;
-    /* need to check line 1 and 2 separately since check_coding_spec
-       assumes a single line as input */
-    if (newl[0]) {
-        if (!check_coding_spec(str, newl[0] - str, tok, buf_setreadl)) {
-            return NULL;
-        }
-        if (tok->enc == NULL && tok->decoding_state != STATE_NORMAL && newl[1]) {
-            if (!check_coding_spec(newl[0]+1, newl[1] - newl[0],
-                                   tok, buf_setreadl))
-                return NULL;
-        }
-    }
-    if (tok->enc != NULL) {
-        assert(utf8 == NULL);
-        utf8 = translate_into_utf8(str, tok->enc);
-        if (utf8 == NULL)
-            return error_ret(tok);
-        str = PyBytes_AS_STRING(utf8);
-    }
-    assert(tok->decoding_buffer == NULL);
-    tok->decoding_buffer = utf8; /* CAUTION */
-    return str;
-}
-
-/* Set up tokenizer for string */
-
-struct tok_state *
-_PyTokenizer_FromString(const char *str, int exec_input)
-{
-    struct tok_state *tok = tok_new();
-    char *decoded;
-
-    if (tok == NULL)
-        return NULL;
-    decoded = decode_str(str, exec_input, tok);
-    if (decoded == NULL) {
-        _PyTokenizer_Free(tok);
-        return NULL;
-    }
-
-    tok->buf = tok->cur = tok->inp = decoded;
-    tok->end = decoded;
-    return tok;
-}
-
-/* Set up tokenizer for UTF-8 string */
-
-struct tok_state *
-_PyTokenizer_FromUTF8(const char *str, int exec_input)
-{
-    struct tok_state *tok = tok_new();
-    char *translated;
-    if (tok == NULL)
-        return NULL;
-    tok->input = translated = translate_newlines(str, exec_input, tok);
-    if (translated == NULL) {
-        _PyTokenizer_Free(tok);
-        return NULL;
-    }
-    tok->decoding_state = STATE_NORMAL;
-    tok->enc = NULL;
-    tok->str = translated;
-    tok->encoding = new_string("utf-8", 5, tok);
-    if (!tok->encoding) {
-        _PyTokenizer_Free(tok);
-        return NULL;
-    }
-
-    tok->buf = tok->cur = tok->inp = translated;
-    tok->end = translated;
-    return tok;
-}
-
-/* Set up tokenizer for file */
-
-struct tok_state *
-_PyTokenizer_FromFile(FILE *fp, const char* enc,
-                      const char *ps1, const char *ps2)
-{
-    struct tok_state *tok = tok_new();
-    if (tok == NULL)
-        return NULL;
-    if ((tok->buf = (char *)PyMem_Malloc(BUFSIZ)) == NULL) {
-        _PyTokenizer_Free(tok);
-        return NULL;
-    }
-    tok->cur = tok->inp = tok->buf;
-    tok->end = tok->buf + BUFSIZ;
-    tok->fp = fp;
-    tok->prompt = ps1;
-    tok->nextprompt = ps2;
-    if (enc != NULL) {
-        /* Must copy encoding declaration since it
-           gets copied into the parse tree. */
-        tok->encoding = new_string(enc, strlen(enc), tok);
-        if (!tok->encoding) {
-            _PyTokenizer_Free(tok);
-            return NULL;
-        }
-        tok->decoding_state = STATE_NORMAL;
-    }
-    return tok;
-}
-
-/* Free a tok_state structure */
-
-void
-_PyTokenizer_Free(struct tok_state *tok)
-{
-    if (tok->encoding != NULL) {
-        PyMem_Free(tok->encoding);
-    }
-    Py_XDECREF(tok->decoding_readline);
-    Py_XDECREF(tok->decoding_buffer);
-    Py_XDECREF(tok->filename);
-    if (tok->fp != NULL && tok->buf != NULL) {
-        PyMem_Free(tok->buf);
-    }
-    if (tok->input) {
-        PyMem_Free(tok->input);
-    }
-    if (tok->interactive_src_start != NULL) {
-        PyMem_Free(tok->interactive_src_start);
-    }
-    free_fstring_expressions(tok);
-    PyMem_Free(tok);
-}
-
-static int
-tok_readline_raw(struct tok_state *tok)
-{
-    do {
-        if (!tok_reserve_buf(tok, BUFSIZ)) {
-            return 0;
-        }
-        int n_chars = (int)(tok->end - tok->inp);
-        size_t line_size = 0;
-        char *line = _Py_UniversalNewlineFgetsWithSize(tok->inp, n_chars, tok->fp, NULL, &line_size);
-        if (line == NULL) {
-            return 1;
-        }
-        if (tok->tok_mode_stack_index && !update_fstring_expr(tok, 0)) {
-            return 0;
-        }
-        if (tok->fp_interactive &&
-            tok_concatenate_interactive_new_line(tok, line) == -1) {
-            return 0;
-        }
-        tok->inp += line_size;
-        if (tok->inp == tok->buf) {
-            return 0;
-        }
-    } while (tok->inp[-1] != '\n');
-    return 1;
-}
-
-static int
-tok_underflow_string(struct tok_state *tok) {
-    char *end = strchr(tok->inp, '\n');
-    if (end != NULL) {
-        end++;
-    }
-    else {
-        end = strchr(tok->inp, '\0');
-        if (end == tok->inp) {
-            tok->done = E_EOF;
-            return 0;
-        }
-    }
-    if (tok->start == NULL) {
-        tok->buf = tok->cur;
-    }
-    tok->line_start = tok->cur;
-    ADVANCE_LINENO();
-    tok->inp = end;
-    return 1;
-}
-
-static int
-tok_underflow_interactive(struct tok_state *tok) {
-    if (tok->interactive_underflow == IUNDERFLOW_STOP) {
-        tok->done = E_INTERACT_STOP;
-        return 1;
-    }
-    char *newtok = PyOS_Readline(tok->fp ? tok->fp : stdin, stdout, tok->prompt);
-    if (newtok != NULL) {
-        char *translated = translate_newlines(newtok, 0, tok);
-        PyMem_Free(newtok);
-        if (translated == NULL) {
-            return 0;
-        }
-        newtok = translated;
-    }
-    if (tok->encoding && newtok && *newtok) {
-        /* Recode to UTF-8 */
-        Py_ssize_t buflen;
-        const char* buf;
-        PyObject *u = translate_into_utf8(newtok, tok->encoding);
-        PyMem_Free(newtok);
-        if (u == NULL) {
-            tok->done = E_DECODE;
-            return 0;
-        }
-        buflen = PyBytes_GET_SIZE(u);
-        buf = PyBytes_AS_STRING(u);
-        newtok = PyMem_Malloc(buflen+1);
-        if (newtok == NULL) {
-            Py_DECREF(u);
-            tok->done = E_NOMEM;
-            return 0;
-        }
-        strcpy(newtok, buf);
-        Py_DECREF(u);
-    }
-    if (tok->fp_interactive &&
-        tok_concatenate_interactive_new_line(tok, newtok) == -1) {
-        PyMem_Free(newtok);
-        return 0;
-    }
-    if (tok->nextprompt != NULL) {
-        tok->prompt = tok->nextprompt;
-    }
-    if (newtok == NULL) {
-        tok->done = E_INTR;
-    }
-    else if (*newtok == '\0') {
-        PyMem_Free(newtok);
-        tok->done = E_EOF;
-    }
-    else if (tok->start != NULL) {
-        Py_ssize_t cur_multi_line_start = tok->multi_line_start - tok->buf;
-        remember_fstring_buffers(tok);
-        size_t size = strlen(newtok);
-        ADVANCE_LINENO();
-        if (!tok_reserve_buf(tok, size + 1)) {
-            PyMem_Free(tok->buf);
-            tok->buf = NULL;
-            PyMem_Free(newtok);
-            return 0;
-        }
-        memcpy(tok->cur, newtok, size + 1);
-        PyMem_Free(newtok);
-        tok->inp += size;
-        tok->multi_line_start = tok->buf + cur_multi_line_start;
-        restore_fstring_buffers(tok);
-    }
-    else {
-        remember_fstring_buffers(tok);
-        ADVANCE_LINENO();
-        PyMem_Free(tok->buf);
-        tok->buf = newtok;
-        tok->cur = tok->buf;
-        tok->line_start = tok->buf;
-        tok->inp = strchr(tok->buf, '\0');
-        tok->end = tok->inp + 1;
-        restore_fstring_buffers(tok);
-    }
-    if (tok->done != E_OK) {
-        if (tok->prompt != NULL) {
-            PySys_WriteStderr("\n");
-        }
-        return 0;
-    }
-
-    if (tok->tok_mode_stack_index && !update_fstring_expr(tok, 0)) {
-        return 0;
-    }
-    return 1;
-}
-
-static int
-tok_underflow_file(struct tok_state *tok) {
-    if (tok->start == NULL) {
-        tok->cur = tok->inp = tok->buf;
-    }
-    if (tok->decoding_state == STATE_INIT) {
-        /* We have not yet determined the encoding.
-           If an encoding is found, use the file-pointer
-           reader functions from now on. */
-        if (!check_bom(fp_getc, fp_ungetc, fp_setreadl, tok)) {
-            error_ret(tok);
-            return 0;
-        }
-        assert(tok->decoding_state != STATE_INIT);
-    }
-    /* Read until '\n' or EOF */
-    if (tok->decoding_readline != NULL) {
-        /* We already have a codec associated with this input. */
-        if (!tok_readline_recode(tok)) {
-            return 0;
-        }
-    }
-    else {
-        /* We want a 'raw' read. */
-        if (!tok_readline_raw(tok)) {
-            return 0;
-        }
-    }
-    if (tok->inp == tok->cur) {
-        tok->done = E_EOF;
-        return 0;
-    }
-    if (tok->inp[-1] != '\n') {
-        assert(tok->inp + 1 < tok->end);
-        /* Last line does not end in \n, fake one */
-        *tok->inp++ = '\n';
-        *tok->inp = '\0';
-    }
-
-    ADVANCE_LINENO();
-    if (tok->decoding_state != STATE_NORMAL) {
-        if (tok->lineno > 2) {
-            tok->decoding_state = STATE_NORMAL;
-        }
-        else if (!check_coding_spec(tok->cur, strlen(tok->cur),
-                                    tok, fp_setreadl))
-        {
-            return 0;
-        }
-    }
-    /* The default encoding is UTF-8, so make sure we don't have any
-       non-UTF-8 sequences in it. */
-    if (!tok->encoding && !ensure_utf8(tok->cur, tok)) {
-        error_ret(tok);
-        return 0;
-    }
-    assert(tok->done == E_OK);
-    return tok->done == E_OK;
-}
-
-#if defined(Py_DEBUG)
-static void
-print_escape(FILE *f, const char *s, Py_ssize_t size)
-{
-    if (s == NULL) {
-        fputs("NULL", f);
-        return;
-    }
-    putc('"', f);
-    while (size-- > 0) {
-        unsigned char c = *s++;
-        switch (c) {
-            case '\n': fputs("\\n", f); break;
-            case '\r': fputs("\\r", f); break;
-            case '\t': fputs("\\t", f); break;
-            case '\f': fputs("\\f", f); break;
-            case '\'': fputs("\\'", f); break;
-            case '"': fputs("\\\"", f); break;
-            default:
-                if (0x20 <= c && c <= 0x7f)
-                    putc(c, f);
-                else
-                    fprintf(f, "\\x%02x", c);
-        }
-    }
-    putc('"', f);
-}
-#endif
-
-/* Get next char, updating state; error code goes into tok->done */
-
-static int
-tok_nextc(struct tok_state *tok)
-{
-    int rc;
-    for (;;) {
-        if (tok->cur != tok->inp) {
-            tok->col_offset++;
-            return Py_CHARMASK(*tok->cur++); /* Fast path */
-        }
-        if (tok->done != E_OK) {
-            return EOF;
-        }
-        if (tok->fp == NULL) {
-            rc = tok_underflow_string(tok);
-        }
-        else if (tok->prompt != NULL) {
-            rc = tok_underflow_interactive(tok);
-        }
-        else {
-            rc = tok_underflow_file(tok);
-        }
-#if defined(Py_DEBUG)
-        if (tok->debug) {
-            fprintf(stderr, "line[%d] = ", tok->lineno);
-            print_escape(stderr, tok->cur, tok->inp - tok->cur);
-            fprintf(stderr, "  tok->done = %d\n", tok->done);
-        }
-#endif
-        if (!rc) {
-            tok->cur = tok->inp;
-            return EOF;
-        }
-        tok->line_start = tok->cur;
-
-        if (contains_null_bytes(tok->line_start, tok->inp - tok->line_start)) {
-            syntaxerror(tok, "source code cannot contain null bytes");
-            tok->cur = tok->inp;
-            return EOF;
-        }
-    }
-    Py_UNREACHABLE();
-}
-
-/* Back-up one character */
-
-static void
-tok_backup(struct tok_state *tok, int c)
-{
-    if (c != EOF) {
-        if (--tok->cur < tok->buf) {
-            Py_FatalError("tokenizer beginning of buffer");
-        }
-        if ((int)(unsigned char)*tok->cur != Py_CHARMASK(c)) {
-            Py_FatalError("tok_backup: wrong character");
-        }
-        tok->col_offset--;
-    }
-}
-
-static int
-_syntaxerror_range(struct tok_state *tok, const char *format,
-                   int col_offset, int end_col_offset,
-                   va_list vargs)
-{
-    // In release builds, we don't want to overwrite a previous error, but in debug builds we
-    // want to fail if we are not doing it so we can fix it.
-    assert(tok->done != E_ERROR);
-    if (tok->done == E_ERROR) {
-        return ERRORTOKEN;
-    }
-    PyObject *errmsg, *errtext, *args;
-    errmsg = PyUnicode_FromFormatV(format, vargs);
-    if (!errmsg) {
-        goto error;
-    }
-
-    errtext = PyUnicode_DecodeUTF8(tok->line_start, tok->cur - tok->line_start,
-                                   "replace");
-    if (!errtext) {
-        goto error;
-    }
-
-    if (col_offset == -1) {
-        col_offset = (int)PyUnicode_GET_LENGTH(errtext);
-    }
-    if (end_col_offset == -1) {
-        end_col_offset = col_offset;
-    }
-
-    Py_ssize_t line_len = strcspn(tok->line_start, "\n");
-    if (line_len != tok->cur - tok->line_start) {
-        Py_DECREF(errtext);
-        errtext = PyUnicode_DecodeUTF8(tok->line_start, line_len,
-                                       "replace");
-    }
-    if (!errtext) {
-        goto error;
-    }
-
-    args = Py_BuildValue("(O(OiiNii))", errmsg, tok->filename, tok->lineno,
-                         col_offset, errtext, tok->lineno, end_col_offset);
-    if (args) {
-        PyErr_SetObject(PyExc_SyntaxError, args);
-        Py_DECREF(args);
-    }
-
-error:
-    Py_XDECREF(errmsg);
-    tok->done = E_ERROR;
-    return ERRORTOKEN;
-}
-
-static int
-syntaxerror(struct tok_state *tok, const char *format, ...)
-{
-    // This errors are cleaned on startup. Todo: Fix it.
-    va_list vargs;
-    va_start(vargs, format);
-    int ret = _syntaxerror_range(tok, format, -1, -1, vargs);
-    va_end(vargs);
-    return ret;
-}
-
-static int
-syntaxerror_known_range(struct tok_state *tok,
-                        int col_offset, int end_col_offset,
-                        const char *format, ...)
-{
-    va_list vargs;
-    va_start(vargs, format);
-    int ret = _syntaxerror_range(tok, format, col_offset, end_col_offset, vargs);
-    va_end(vargs);
-    return ret;
-}
-
-static int
-indenterror(struct tok_state *tok)
-{
-    tok->done = E_TABSPACE;
-    tok->cur = tok->inp;
-    return ERRORTOKEN;
-}
-
-static int
-parser_warn(struct tok_state *tok, PyObject *category, const char *format, ...)
-{
-    if (!tok->report_warnings) {
-        return 0;
-    }
-
-    PyObject *errmsg;
-    va_list vargs;
-    va_start(vargs, format);
-    errmsg = PyUnicode_FromFormatV(format, vargs);
-    va_end(vargs);
-    if (!errmsg) {
-        goto error;
-    }
-
-    if (PyErr_WarnExplicitObject(category, errmsg, tok->filename,
-                                 tok->lineno, NULL, NULL) < 0) {
-        if (PyErr_ExceptionMatches(category)) {
-            /* Replace the DeprecationWarning exception with a SyntaxError
-               to get a more accurate error report */
-            PyErr_Clear();
-            syntaxerror(tok, "%U", errmsg);
-        }
-        goto error;
-    }
-    Py_DECREF(errmsg);
-    return 0;
-
-error:
-    Py_XDECREF(errmsg);
-    tok->done = E_ERROR;
-    return -1;
-}
-
-static int
-warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char)
-{
-
-    if (!tok->tok_report_warnings) {
-        return 0;
-    }
-
-    PyObject *msg = PyUnicode_FromFormat(
-        "invalid escape sequence '\\%c'",
-        (char) first_invalid_escape_char
-    );
-
-    if (msg == NULL) {
-        return -1;
-    }
-
-    if (PyErr_WarnExplicitObject(PyExc_DeprecationWarning, msg, tok->filename,
-                                 tok->lineno, NULL, NULL) < 0) {
-        Py_DECREF(msg);
-
-        if (PyErr_ExceptionMatches(PyExc_DeprecationWarning)) {
-            /* Replace the DeprecationWarning exception with a SyntaxError
-               to get a more accurate error report */
-            PyErr_Clear();
-            return syntaxerror(tok, "invalid escape sequence '\\%c'", (char) first_invalid_escape_char);
-        }
-
-        return -1;
-    }
-
-    Py_DECREF(msg);
-    return 0;
-}
-
-static int
-lookahead(struct tok_state *tok, const char *test)
-{
-    const char *s = test;
-    int res = 0;
-    while (1) {
-        int c = tok_nextc(tok);
-        if (*s == 0) {
-            res = !is_potential_identifier_char(c);
-        }
-        else if (c == *s) {
-            s++;
-            continue;
-        }
-
-        tok_backup(tok, c);
-        while (s != test) {
-            tok_backup(tok, *--s);
-        }
-        return res;
-    }
-}
-
-static int
-verify_end_of_number(struct tok_state *tok, int c, const char *kind)
-{
-    /* Emit a deprecation warning only if the numeric literal is immediately
-     * followed by one of keywords which can occur after a numeric literal
-     * in valid code: "and", "else", "for", "if", "in", "is" and "or".
-     * It allows to gradually deprecate existing valid code without adding
-     * warning before error in most cases of invalid numeric literal (which
-     * would be confusing and break existing tests).
-     * Raise a syntax error with slightly better message than plain
-     * "invalid syntax" if the numeric literal is immediately followed by
-     * other keyword or identifier.
-     */
-    int r = 0;
-    if (c == 'a') {
-        r = lookahead(tok, "nd");
-    }
-    else if (c == 'e') {
-        r = lookahead(tok, "lse");
-    }
-    else if (c == 'f') {
-        r = lookahead(tok, "or");
-    }
-    else if (c == 'i') {
-        int c2 = tok_nextc(tok);
-        if (c2 == 'f' || c2 == 'n' || c2 == 's') {
-            r = 1;
-        }
-        tok_backup(tok, c2);
-    }
-    else if (c == 'o') {
-        r = lookahead(tok, "r");
-    }
-    else if (c == 'n') {
-        r = lookahead(tok, "ot");
-    }
-    if (r) {
-        tok_backup(tok, c);
-        if (parser_warn(tok, PyExc_SyntaxWarning,
-                "invalid %s literal", kind))
-        {
-            return 0;
-        }
-        tok_nextc(tok);
-    }
-    else /* In future releases, only error will remain. */
-    if (is_potential_identifier_char(c)) {
-        tok_backup(tok, c);
-        syntaxerror(tok, "invalid %s literal", kind);
-        return 0;
-    }
-    return 1;
-}
-
-/* Verify that the identifier follows PEP 3131.
-   All identifier strings are guaranteed to be "ready" unicode objects.
- */
-static int
-verify_identifier(struct tok_state *tok)
-{
-    PyObject *s;
-    if (tok->decoding_erred)
-        return 0;
-    s = PyUnicode_DecodeUTF8(tok->start, tok->cur - tok->start, NULL);
-    if (s == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_UnicodeDecodeError)) {
-            tok->done = E_DECODE;
-        }
-        else {
-            tok->done = E_ERROR;
-        }
-        return 0;
-    }
-    Py_ssize_t invalid = _PyUnicode_ScanIdentifier(s);
-    if (invalid < 0) {
-        Py_DECREF(s);
-        tok->done = E_ERROR;
-        return 0;
-    }
-    assert(PyUnicode_GET_LENGTH(s) > 0);
-    if (invalid < PyUnicode_GET_LENGTH(s)) {
-        Py_UCS4 ch = PyUnicode_READ_CHAR(s, invalid);
-        if (invalid + 1 < PyUnicode_GET_LENGTH(s)) {
-            /* Determine the offset in UTF-8 encoded input */
-            Py_SETREF(s, PyUnicode_Substring(s, 0, invalid + 1));
-            if (s != NULL) {
-                Py_SETREF(s, PyUnicode_AsUTF8String(s));
-            }
-            if (s == NULL) {
-                tok->done = E_ERROR;
-                return 0;
-            }
-            tok->cur = (char *)tok->start + PyBytes_GET_SIZE(s);
-        }
-        Py_DECREF(s);
-        // PyUnicode_FromFormatV() does not support %X
-        char hex[9];
-        (void)PyOS_snprintf(hex, sizeof(hex), "%04X", ch);
-        if (Py_UNICODE_ISPRINTABLE(ch)) {
-            syntaxerror(tok, "invalid character '%c' (U+%s)", ch, hex);
-        }
-        else {
-            syntaxerror(tok, "invalid non-printable character U+%s", hex);
-        }
-        return 0;
-    }
-    Py_DECREF(s);
-    return 1;
-}
-
-static int
-tok_decimal_tail(struct tok_state *tok)
-{
-    int c;
-
-    while (1) {
-        do {
-            c = tok_nextc(tok);
-        } while (isdigit(c));
-        if (c != '_') {
-            break;
-        }
-        c = tok_nextc(tok);
-        if (!isdigit(c)) {
-            tok_backup(tok, c);
-            syntaxerror(tok, "invalid decimal literal");
-            return 0;
-        }
-    }
-    return c;
-}
-
-
-static inline int
-tok_continuation_line(struct tok_state *tok) {
-    int c = tok_nextc(tok);
-    if (c != '\n') {
-        tok->done = E_LINECONT;
-        return -1;
-    }
-    c = tok_nextc(tok);
-    if (c == EOF) {
-        tok->done = E_EOF;
-        tok->cur = tok->inp;
-        return -1;
-    } else {
-        tok_backup(tok, c);
-    }
-    return c;
-}
-
-static int
-type_comment_token_setup(struct tok_state *tok, struct token *token, int type, int col_offset,
-                         int end_col_offset, const char *start, const char *end)
-{
-    token->level = tok->level;
-    token->lineno = token->end_lineno = tok->lineno;
-    token->col_offset = col_offset;
-    token->end_col_offset = end_col_offset;
-    token->start = start;
-    token->end = end;
-    return type;
-}
-
-static int
-token_setup(struct tok_state *tok, struct token *token, int type, const char *start, const char *end)
-{
-    assert((start == NULL && end == NULL) || (start != NULL && end != NULL));
-    token->level = tok->level;
-    if (ISSTRINGLIT(type)) {
-        token->lineno = tok->first_lineno;
-    }
-    else {
-        token->lineno = tok->lineno;
-    }
-    token->end_lineno = tok->lineno;
-    token->col_offset = token->end_col_offset = -1;
-    token->start = start;
-    token->end = end;
-
-    if (start != NULL && end != NULL) {
-        token->col_offset = tok->starting_col_offset;
-        token->end_col_offset = tok->col_offset;
-    }
-    return type;
-}
-
-static int
-tok_get_normal_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct token *token)
-{
-    int c;
-    int blankline, nonascii;
-
-    const char *p_start = NULL;
-    const char *p_end = NULL;
-  nextline:
-    tok->start = NULL;
-    tok->starting_col_offset = -1;
-    blankline = 0;
-
-    /* Get indentation level */
-    if (tok->atbol) {
-        int col = 0;
-        int altcol = 0;
-        tok->atbol = 0;
-        int cont_line_col = 0;
-        for (;;) {
-            c = tok_nextc(tok);
-            if (c == ' ') {
-                col++, altcol++;
-            }
-            else if (c == '\t') {
-                col = (col / tok->tabsize + 1) * tok->tabsize;
-                altcol = (altcol / ALTTABSIZE + 1) * ALTTABSIZE;
-            }
-            else if (c == '\014')  {/* Control-L (formfeed) */
-                col = altcol = 0; /* For Emacs users */
-            }
-            else if (c == '\\') {
-                // Indentation cannot be split over multiple physical lines
-                // using backslashes. This means that if we found a backslash
-                // preceded by whitespace, **the first one we find** determines
-                // the level of indentation of whatever comes next.
-                cont_line_col = cont_line_col ? cont_line_col : col;
-                if ((c = tok_continuation_line(tok)) == -1) {
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-            else {
-                break;
-            }
-        }
-        tok_backup(tok, c);
-        if (c == '#' || c == '\n') {
-            /* Lines with only whitespace and/or comments
-               shouldn't affect the indentation and are
-               not passed to the parser as NEWLINE tokens,
-               except *totally* empty lines in interactive
-               mode, which signal the end of a command group. */
-            if (col == 0 && c == '\n' && tok->prompt != NULL) {
-                blankline = 0; /* Let it through */
-            }
-            else if (tok->prompt != NULL && tok->lineno == 1) {
-                /* In interactive mode, if the first line contains
-                   only spaces and/or a comment, let it through. */
-                blankline = 0;
-                col = altcol = 0;
-            }
-            else {
-                blankline = 1; /* Ignore completely */
-            }
-            /* We can't jump back right here since we still
-               may need to skip to the end of a comment */
-        }
-        if (!blankline && tok->level == 0) {
-            col = cont_line_col ? cont_line_col : col;
-            altcol = cont_line_col ? cont_line_col : altcol;
-            if (col == tok->indstack[tok->indent]) {
-                /* No change */
-                if (altcol != tok->altindstack[tok->indent]) {
-                    return MAKE_TOKEN(indenterror(tok));
-                }
-            }
-            else if (col > tok->indstack[tok->indent]) {
-                /* Indent -- always one */
-                if (tok->indent+1 >= MAXINDENT) {
-                    tok->done = E_TOODEEP;
-                    tok->cur = tok->inp;
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-                if (altcol <= tok->altindstack[tok->indent]) {
-                    return MAKE_TOKEN(indenterror(tok));
-                }
-                tok->pendin++;
-                tok->indstack[++tok->indent] = col;
-                tok->altindstack[tok->indent] = altcol;
-            }
-            else /* col < tok->indstack[tok->indent] */ {
-                /* Dedent -- any number, must be consistent */
-                while (tok->indent > 0 &&
-                    col < tok->indstack[tok->indent]) {
-                    tok->pendin--;
-                    tok->indent--;
-                }
-                if (col != tok->indstack[tok->indent]) {
-                    tok->done = E_DEDENT;
-                    tok->cur = tok->inp;
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-                if (altcol != tok->altindstack[tok->indent]) {
-                    return MAKE_TOKEN(indenterror(tok));
-                }
-            }
-        }
-    }
-
-    tok->start = tok->cur;
-    tok->starting_col_offset = tok->col_offset;
-
-    /* Return pending indents/dedents */
-    if (tok->pendin != 0) {
-        if (tok->pendin < 0) {
-            tok->pendin++;
-            return MAKE_TOKEN(DEDENT);
-        }
-        else {
-            tok->pendin--;
-            return MAKE_TOKEN(INDENT);
-        }
-    }
-
-    /* Peek ahead at the next character */
-    c = tok_nextc(tok);
-    tok_backup(tok, c);
-    /* Check if we are closing an async function */
-    if (tok->async_def
-        && !blankline
-        /* Due to some implementation artifacts of type comments,
-         * a TYPE_COMMENT at the start of a function won't set an
-         * indentation level and it will produce a NEWLINE after it.
-         * To avoid spuriously ending an async function due to this,
-         * wait until we have some non-newline char in front of us. */
-        && c != '\n'
-        && tok->level == 0
-        /* There was a NEWLINE after ASYNC DEF,
-           so we're past the signature. */
-        && tok->async_def_nl
-        /* Current indentation level is less than where
-           the async function was defined */
-        && tok->async_def_indent >= tok->indent)
-    {
-        tok->async_def = 0;
-        tok->async_def_indent = 0;
-        tok->async_def_nl = 0;
-    }
-
- again:
-    tok->start = NULL;
-    /* Skip spaces */
-    do {
-        c = tok_nextc(tok);
-    } while (c == ' ' || c == '\t' || c == '\014');
-
-    /* Set start of current token */
-    tok->start = tok->cur == NULL ? NULL : tok->cur - 1;
-    tok->starting_col_offset = tok->col_offset - 1;
-
-    /* Skip comment, unless it's a type comment */
-    if (c == '#') {
-
-        if (INSIDE_FSTRING(tok)) {
-            return MAKE_TOKEN(syntaxerror(tok, "f-string expression part cannot include '#'"));
-        }
-
-        const char *prefix, *p, *type_start;
-        int current_starting_col_offset;
-
-        while (c != EOF && c != '\n') {
-            c = tok_nextc(tok);
-        }
-
-        if (tok->type_comments) {
-            p = tok->start;
-            current_starting_col_offset = tok->starting_col_offset;
-            prefix = type_comment_prefix;
-            while (*prefix && p < tok->cur) {
-                if (*prefix == ' ') {
-                    while (*p == ' ' || *p == '\t') {
-                        p++;
-                        current_starting_col_offset++;
-                    }
-                } else if (*prefix == *p) {
-                    p++;
-                    current_starting_col_offset++;
-                } else {
-                    break;
-                }
-
-                prefix++;
-            }
-
-            /* This is a type comment if we matched all of type_comment_prefix. */
-            if (!*prefix) {
-                int is_type_ignore = 1;
-                // +6 in order to skip the word 'ignore'
-                const char *ignore_end = p + 6;
-                const int ignore_end_col_offset = current_starting_col_offset + 6;
-                tok_backup(tok, c);  /* don't eat the newline or EOF */
-
-                type_start = p;
-
-                /* A TYPE_IGNORE is "type: ignore" followed by the end of the token
-                 * or anything ASCII and non-alphanumeric. */
-                is_type_ignore = (
-                    tok->cur >= ignore_end && memcmp(p, "ignore", 6) == 0
-                    && !(tok->cur > ignore_end
-                         && ((unsigned char)ignore_end[0] >= 128 || Py_ISALNUM(ignore_end[0]))));
-
-                if (is_type_ignore) {
-                    p_start = ignore_end;
-                    p_end = tok->cur;
-
-                    /* If this type ignore is the only thing on the line, consume the newline also. */
-                    if (blankline) {
-                        tok_nextc(tok);
-                        tok->atbol = 1;
-                    }
-                    return MAKE_TYPE_COMMENT_TOKEN(TYPE_IGNORE, ignore_end_col_offset, tok->col_offset);
-                } else {
-                    p_start = type_start;
-                    p_end = tok->cur;
-                    return MAKE_TYPE_COMMENT_TOKEN(TYPE_COMMENT, current_starting_col_offset, tok->col_offset);
-                }
-            }
-        }
-    }
-
-    if (tok->done == E_INTERACT_STOP) {
-        return MAKE_TOKEN(ENDMARKER);
-    }
-
-    /* Check for EOF and errors now */
-    if (c == EOF) {
-        if (tok->level) {
-            return MAKE_TOKEN(ERRORTOKEN);
-        }
-        return MAKE_TOKEN(tok->done == E_EOF ? ENDMARKER : ERRORTOKEN);
-    }
-
-    /* Identifier (most frequent token!) */
-    nonascii = 0;
-    if (is_potential_identifier_start(c)) {
-        /* Process the various legal combinations of b"", r"", u"", and f"". */
-        int saw_b = 0, saw_r = 0, saw_u = 0, saw_f = 0;
-        while (1) {
-            if (!(saw_b || saw_u || saw_f) && (c == 'b' || c == 'B'))
-                saw_b = 1;
-            /* Since this is a backwards compatibility support literal we don't
-               want to support it in arbitrary order like byte literals. */
-            else if (!(saw_b || saw_u || saw_r || saw_f)
-                     && (c == 'u'|| c == 'U')) {
-                saw_u = 1;
-            }
-            /* ur"" and ru"" are not supported */
-            else if (!(saw_r || saw_u) && (c == 'r' || c == 'R')) {
-                saw_r = 1;
-            }
-            else if (!(saw_f || saw_b || saw_u) && (c == 'f' || c == 'F')) {
-                saw_f = 1;
-            }
-            else {
-                break;
-            }
-            c = tok_nextc(tok);
-            if (c == '"' || c == '\'') {
-                if (saw_f) {
-                    goto f_string_quote;
-                }
-                goto letter_quote;
-            }
-        }
-        while (is_potential_identifier_char(c)) {
-            if (c >= 128) {
-                nonascii = 1;
-            }
-            c = tok_nextc(tok);
-        }
-        tok_backup(tok, c);
-        if (nonascii && !verify_identifier(tok)) {
-            return MAKE_TOKEN(ERRORTOKEN);
-        }
-
-        p_start = tok->start;
-        p_end = tok->cur;
-
-        /* async/await parsing block. */
-        if (tok->cur - tok->start == 5 && tok->start[0] == 'a') {
-            /* May be an 'async' or 'await' token.  For Python 3.7 or
-               later we recognize them unconditionally.  For Python
-               3.5 or 3.6 we recognize 'async' in front of 'def', and
-               either one inside of 'async def'.  (Technically we
-               shouldn't recognize these at all for 3.4 or earlier,
-               but there's no *valid* Python 3.4 code that would be
-               rejected, and async functions will be rejected in a
-               later phase.) */
-            if (!tok->async_hacks || tok->async_def) {
-                /* Always recognize the keywords. */
-                if (memcmp(tok->start, "async", 5) == 0) {
-                    return MAKE_TOKEN(ASYNC);
-                }
-                if (memcmp(tok->start, "await", 5) == 0) {
-                    return MAKE_TOKEN(AWAIT);
-                }
-            }
-            else if (memcmp(tok->start, "async", 5) == 0) {
-                /* The current token is 'async'.
-                   Look ahead one token to see if that is 'def'. */
-
-                struct tok_state ahead_tok;
-                struct token ahead_token;
-                int ahead_tok_kind;
-
-                memcpy(&ahead_tok, tok, sizeof(ahead_tok));
-                ahead_tok_kind = tok_get_normal_mode(&ahead_tok,
-                                                     current_tok,
-                                                     &ahead_token);
-
-                if (ahead_tok_kind == NAME
-                    && ahead_tok.cur - ahead_tok.start == 3
-                    && memcmp(ahead_tok.start, "def", 3) == 0)
-                {
-                    /* The next token is going to be 'def', so instead of
-                       returning a plain NAME token, return ASYNC. */
-                    tok->async_def_indent = tok->indent;
-                    tok->async_def = 1;
-                    return MAKE_TOKEN(ASYNC);
-                }
-            }
-        }
-
-        return MAKE_TOKEN(NAME);
-    }
-
-    /* Newline */
-    if (c == '\n') {
-        tok->atbol = 1;
-        if (blankline || tok->level > 0) {
-            goto nextline;
-        }
-        p_start = tok->start;
-        p_end = tok->cur - 1; /* Leave '\n' out of the string */
-        tok->cont_line = 0;
-        if (tok->async_def) {
-            /* We're somewhere inside an 'async def' function, and
-               we've encountered a NEWLINE after its signature. */
-            tok->async_def_nl = 1;
-        }
-        return MAKE_TOKEN(NEWLINE);
-    }
-
-    /* Period or number starting with period? */
-    if (c == '.') {
-        c = tok_nextc(tok);
-        if (isdigit(c)) {
-            goto fraction;
-        } else if (c == '.') {
-            c = tok_nextc(tok);
-            if (c == '.') {
-                p_start = tok->start;
-                p_end = tok->cur;
-                return MAKE_TOKEN(ELLIPSIS);
-            }
-            else {
-                tok_backup(tok, c);
-            }
-            tok_backup(tok, '.');
-        }
-        else {
-            tok_backup(tok, c);
-        }
-        p_start = tok->start;
-        p_end = tok->cur;
-        return MAKE_TOKEN(DOT);
-    }
-
-    /* Number */
-    if (isdigit(c)) {
-        if (c == '0') {
-            /* Hex, octal or binary -- maybe. */
-            c = tok_nextc(tok);
-            if (c == 'x' || c == 'X') {
-                /* Hex */
-                c = tok_nextc(tok);
-                do {
-                    if (c == '_') {
-                        c = tok_nextc(tok);
-                    }
-                    if (!isxdigit(c)) {
-                        tok_backup(tok, c);
-                        return MAKE_TOKEN(syntaxerror(tok, "invalid hexadecimal literal"));
-                    }
-                    do {
-                        c = tok_nextc(tok);
-                    } while (isxdigit(c));
-                } while (c == '_');
-                if (!verify_end_of_number(tok, c, "hexadecimal")) {
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-            else if (c == 'o' || c == 'O') {
-                /* Octal */
-                c = tok_nextc(tok);
-                do {
-                    if (c == '_') {
-                        c = tok_nextc(tok);
-                    }
-                    if (c < '0' || c >= '8') {
-                        if (isdigit(c)) {
-                            return MAKE_TOKEN(syntaxerror(tok,
-                                    "invalid digit '%c' in octal literal", c));
-                        }
-                        else {
-                            tok_backup(tok, c);
-                            return MAKE_TOKEN(syntaxerror(tok, "invalid octal literal"));
-                        }
-                    }
-                    do {
-                        c = tok_nextc(tok);
-                    } while ('0' <= c && c < '8');
-                } while (c == '_');
-                if (isdigit(c)) {
-                    return MAKE_TOKEN(syntaxerror(tok,
-                            "invalid digit '%c' in octal literal", c));
-                }
-                if (!verify_end_of_number(tok, c, "octal")) {
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-            else if (c == 'b' || c == 'B') {
-                /* Binary */
-                c = tok_nextc(tok);
-                do {
-                    if (c == '_') {
-                        c = tok_nextc(tok);
-                    }
-                    if (c != '0' && c != '1') {
-                        if (isdigit(c)) {
-                            return MAKE_TOKEN(syntaxerror(tok, "invalid digit '%c' in binary literal", c));
-                        }
-                        else {
-                            tok_backup(tok, c);
-                            return MAKE_TOKEN(syntaxerror(tok, "invalid binary literal"));
-                        }
-                    }
-                    do {
-                        c = tok_nextc(tok);
-                    } while (c == '0' || c == '1');
-                } while (c == '_');
-                if (isdigit(c)) {
-                    return MAKE_TOKEN(syntaxerror(tok, "invalid digit '%c' in binary literal", c));
-                }
-                if (!verify_end_of_number(tok, c, "binary")) {
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-            else {
-                int nonzero = 0;
-                /* maybe old-style octal; c is first char of it */
-                /* in any case, allow '0' as a literal */
-                while (1) {
-                    if (c == '_') {
-                        c = tok_nextc(tok);
-                        if (!isdigit(c)) {
-                            tok_backup(tok, c);
-                            return MAKE_TOKEN(syntaxerror(tok, "invalid decimal literal"));
-                        }
-                    }
-                    if (c != '0') {
-                        break;
-                    }
-                    c = tok_nextc(tok);
-                }
-                char* zeros_end = tok->cur;
-                if (isdigit(c)) {
-                    nonzero = 1;
-                    c = tok_decimal_tail(tok);
-                    if (c == 0) {
-                        return MAKE_TOKEN(ERRORTOKEN);
-                    }
-                }
-                if (c == '.') {
-                    c = tok_nextc(tok);
-                    goto fraction;
-                }
-                else if (c == 'e' || c == 'E') {
-                    goto exponent;
-                }
-                else if (c == 'j' || c == 'J') {
-                    goto imaginary;
-                }
-                else if (nonzero) {
-                    /* Old-style octal: now disallowed. */
-                    tok_backup(tok, c);
-                    return MAKE_TOKEN(syntaxerror_known_range(
-                            tok, (int)(tok->start + 1 - tok->line_start),
-                            (int)(zeros_end - tok->line_start),
-                            "leading zeros in decimal integer "
-                            "literals are not permitted; "
-                            "use an 0o prefix for octal integers"));
-                }
-                if (!verify_end_of_number(tok, c, "decimal")) {
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-        }
-        else {
-            /* Decimal */
-            c = tok_decimal_tail(tok);
-            if (c == 0) {
-                return MAKE_TOKEN(ERRORTOKEN);
-            }
-            {
-                /* Accept floating point numbers. */
-                if (c == '.') {
-                    c = tok_nextc(tok);
-        fraction:
-                    /* Fraction */
-                    if (isdigit(c)) {
-                        c = tok_decimal_tail(tok);
-                        if (c == 0) {
-                            return MAKE_TOKEN(ERRORTOKEN);
-                        }
-                    }
-                }
-                if (c == 'e' || c == 'E') {
-                    int e;
-                  exponent:
-                    e = c;
-                    /* Exponent part */
-                    c = tok_nextc(tok);
-                    if (c == '+' || c == '-') {
-                        c = tok_nextc(tok);
-                        if (!isdigit(c)) {
-                            tok_backup(tok, c);
-                            return MAKE_TOKEN(syntaxerror(tok, "invalid decimal literal"));
-                        }
-                    } else if (!isdigit(c)) {
-                        tok_backup(tok, c);
-                        if (!verify_end_of_number(tok, e, "decimal")) {
-                            return MAKE_TOKEN(ERRORTOKEN);
-                        }
-                        tok_backup(tok, e);
-                        p_start = tok->start;
-                        p_end = tok->cur;
-                        return MAKE_TOKEN(NUMBER);
-                    }
-                    c = tok_decimal_tail(tok);
-                    if (c == 0) {
-                        return MAKE_TOKEN(ERRORTOKEN);
-                    }
-                }
-                if (c == 'j' || c == 'J') {
-                    /* Imaginary part */
-        imaginary:
-                    c = tok_nextc(tok);
-                    if (!verify_end_of_number(tok, c, "imaginary")) {
-                        return MAKE_TOKEN(ERRORTOKEN);
-                    }
-                }
-                else if (!verify_end_of_number(tok, c, "decimal")) {
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-        }
-        tok_backup(tok, c);
-        p_start = tok->start;
-        p_end = tok->cur;
-        return MAKE_TOKEN(NUMBER);
-    }
-
-  f_string_quote:
-    if (((tolower(*tok->start) == 'f' || tolower(*tok->start) == 'r') && (c == '\'' || c == '"'))) {
-        int quote = c;
-        int quote_size = 1;             /* 1 or 3 */
-
-        /* Nodes of type STRING, especially multi line strings
-           must be handled differently in order to get both
-           the starting line number and the column offset right.
-           (cf. issue 16806) */
-        tok->first_lineno = tok->lineno;
-        tok->multi_line_start = tok->line_start;
-
-        /* Find the quote size and start of string */
-        int after_quote = tok_nextc(tok);
-        if (after_quote == quote) {
-            int after_after_quote = tok_nextc(tok);
-            if (after_after_quote == quote) {
-                quote_size = 3;
-            }
-            else {
-                // TODO: Check this
-                tok_backup(tok, after_after_quote);
-                tok_backup(tok, after_quote);
-            }
-        }
-        if (after_quote != quote) {
-            tok_backup(tok, after_quote);
-        }
-
-
-        p_start = tok->start;
-        p_end = tok->cur;
-        if (tok->tok_mode_stack_index + 1 >= MAXFSTRINGLEVEL) {
-            return MAKE_TOKEN(syntaxerror(tok, "too many nested f-strings"));
-        }
-        tokenizer_mode *the_current_tok = TOK_NEXT_MODE(tok);
-        the_current_tok->kind = TOK_FSTRING_MODE;
-        the_current_tok->f_string_quote = quote;
-        the_current_tok->f_string_quote_size = quote_size;
-        the_current_tok->f_string_start = tok->start;
-        the_current_tok->f_string_multi_line_start = tok->line_start;
-        the_current_tok->f_string_start_offset = -1;
-        the_current_tok->f_string_multi_line_start_offset = -1;
-        the_current_tok->last_expr_buffer = NULL;
-        the_current_tok->last_expr_size = 0;
-        the_current_tok->last_expr_end = -1;
-        the_current_tok->f_string_debug = 0;
-
-        switch (*tok->start) {
-            case 'F':
-            case 'f':
-                the_current_tok->f_string_raw = tolower(*(tok->start + 1)) == 'r';
-                break;
-            case 'R':
-            case 'r':
-                the_current_tok->f_string_raw = 1;
-                break;
-            default:
-                Py_UNREACHABLE();
-        }
-
-        the_current_tok->curly_bracket_depth = 0;
-        the_current_tok->curly_bracket_expr_start_depth = -1;
-        return MAKE_TOKEN(FSTRING_START);
-    }
-
-  letter_quote:
-    /* String */
-    if (c == '\'' || c == '"') {
-        int quote = c;
-        int quote_size = 1;             /* 1 or 3 */
-        int end_quote_size = 0;
-
-        /* Nodes of type STRING, especially multi line strings
-           must be handled differently in order to get both
-           the starting line number and the column offset right.
-           (cf. issue 16806) */
-        tok->first_lineno = tok->lineno;
-        tok->multi_line_start = tok->line_start;
-
-        /* Find the quote size and start of string */
-        c = tok_nextc(tok);
-        if (c == quote) {
-            c = tok_nextc(tok);
-            if (c == quote) {
-                quote_size = 3;
-            }
-            else {
-                end_quote_size = 1;     /* empty string found */
-            }
-        }
-        if (c != quote) {
-            tok_backup(tok, c);
-        }
-
-        /* Get rest of string */
-        while (end_quote_size != quote_size) {
-            c = tok_nextc(tok);
-            if (tok->done == E_ERROR) {
-                return MAKE_TOKEN(ERRORTOKEN);
-            }
-            if (tok->done == E_DECODE) {
-                break;
-            }
-            if (c == EOF || (quote_size == 1 && c == '\n')) {
-                assert(tok->multi_line_start != NULL);
-                // shift the tok_state's location into
-                // the start of string, and report the error
-                // from the initial quote character
-                tok->cur = (char *)tok->start;
-                tok->cur++;
-                tok->line_start = tok->multi_line_start;
-                int start = tok->lineno;
-                tok->lineno = tok->first_lineno;
-
-                if (INSIDE_FSTRING(tok)) {
-                    /* When we are in an f-string, before raising the
-                     * unterminated string literal error, check whether
-                     * does the initial quote matches with f-strings quotes
-                     * and if it is, then this must be a missing '}' token
-                     * so raise the proper error */
-                    tokenizer_mode *the_current_tok = TOK_GET_MODE(tok);
-                    if (the_current_tok->f_string_quote == quote &&
-                        the_current_tok->f_string_quote_size == quote_size) {
-                        return MAKE_TOKEN(syntaxerror(tok, "f-string: expecting '}'", start));
-                    }
-                }
-
-                if (quote_size == 3) {
-                    syntaxerror(tok, "unterminated triple-quoted string literal"
-                                     " (detected at line %d)", start);
-                    if (c != '\n') {
-                        tok->done = E_EOFS;
-                    }
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-                else {
-                    syntaxerror(tok, "unterminated string literal (detected at"
-                                     " line %d)", start);
-                    if (c != '\n') {
-                        tok->done = E_EOLS;
-                    }
-                    return MAKE_TOKEN(ERRORTOKEN);
-                }
-            }
-            if (c == quote) {
-                end_quote_size += 1;
-            }
-            else {
-                end_quote_size = 0;
-                if (c == '\\') {
-                    tok_nextc(tok);  /* skip escaped char */
-                }
-            }
-        }
-
-        p_start = tok->start;
-        p_end = tok->cur;
-        return MAKE_TOKEN(STRING);
-    }
-
-    /* Line continuation */
-    if (c == '\\') {
-        if ((c = tok_continuation_line(tok)) == -1) {
-            return MAKE_TOKEN(ERRORTOKEN);
-        }
-        tok->cont_line = 1;
-        goto again; /* Read next line */
-    }
-
-    /* Punctuation character */
-    int is_punctuation = (c == ':' || c == '}' || c == '!' || c == '{');
-    if (is_punctuation && INSIDE_FSTRING(tok) && INSIDE_FSTRING_EXPR(current_tok)) {
-        /* This code block gets executed before the curly_bracket_depth is incremented
-         * by the `{` case, so for ensuring that we are on the 0th level, we need
-         * to adjust it manually */
-        int cursor = current_tok->curly_bracket_depth - (c != '{');
-        if (cursor == 0 && !update_fstring_expr(tok, c)) {
-            return MAKE_TOKEN(ENDMARKER);
-        }
-        if (cursor == 0 && c != '{' && set_fstring_expr(tok, token, c)) {
-            return MAKE_TOKEN(ERRORTOKEN);
-        }
-
-        if (c == ':' && cursor == current_tok->curly_bracket_expr_start_depth) {
-            current_tok->kind = TOK_FSTRING_MODE;
-            p_start = tok->start;
-            p_end = tok->cur;
-            return MAKE_TOKEN(_PyToken_OneChar(c));
-        }
-    }
-
-    /* Check for two-character token */
-    {
-        int c2 = tok_nextc(tok);
-        int current_token = _PyToken_TwoChars(c, c2);
-        if (current_token != OP) {
-            int c3 = tok_nextc(tok);
-            int current_token3 = _PyToken_ThreeChars(c, c2, c3);
-            if (current_token3 != OP) {
-                current_token = current_token3;
-            }
-            else {
-                tok_backup(tok, c3);
-            }
-            p_start = tok->start;
-            p_end = tok->cur;
-            return MAKE_TOKEN(current_token);
-        }
-        tok_backup(tok, c2);
-    }
-
-    /* Keep track of parentheses nesting level */
-    switch (c) {
-    case '(':
-    case '[':
-    case '{':
-        if (tok->level >= MAXLEVEL) {
-            return MAKE_TOKEN(syntaxerror(tok, "too many nested parentheses"));
-        }
-        tok->parenstack[tok->level] = c;
-        tok->parenlinenostack[tok->level] = tok->lineno;
-        tok->parencolstack[tok->level] = (int)(tok->start - tok->line_start);
-        tok->level++;
-        if (INSIDE_FSTRING(tok)) {
-            current_tok->curly_bracket_depth++;
-        }
-        break;
-    case ')':
-    case ']':
-    case '}':
-        if (!tok->level) {
-            if (INSIDE_FSTRING(tok) && !current_tok->curly_bracket_depth && c == '}') {
-                return MAKE_TOKEN(syntaxerror(tok, "f-string: single '}' is not allowed"));
-            }
-            return MAKE_TOKEN(syntaxerror(tok, "unmatched '%c'", c));
-        }
-        tok->level--;
-        int opening = tok->parenstack[tok->level];
-        if (!((opening == '(' && c == ')') ||
-              (opening == '[' && c == ']') ||
-              (opening == '{' && c == '}')))
-        {
-            /* If the opening bracket belongs to an f-string's expression
-               part (e.g. f"{)}") and the closing bracket is an arbitrary
-               nested expression, then instead of matching a different
-               syntactical construct with it; we'll throw an unmatched
-               parentheses error. */
-            if (INSIDE_FSTRING(tok) && opening == '{') {
-                assert(current_tok->curly_bracket_depth >= 0);
-                int previous_bracket = current_tok->curly_bracket_depth - 1;
-                if (previous_bracket == current_tok->curly_bracket_expr_start_depth) {
-                    return MAKE_TOKEN(syntaxerror(tok, "f-string: unmatched '%c'", c));
-                }
-            }
-            if (tok->parenlinenostack[tok->level] != tok->lineno) {
-                return MAKE_TOKEN(syntaxerror(tok,
-                        "closing parenthesis '%c' does not match "
-                        "opening parenthesis '%c' on line %d",
-                        c, opening, tok->parenlinenostack[tok->level]));
-            }
-            else {
-                return MAKE_TOKEN(syntaxerror(tok,
-                        "closing parenthesis '%c' does not match "
-                        "opening parenthesis '%c'",
-                        c, opening));
-            }
-        }
-
-        if (INSIDE_FSTRING(tok)) {
-            current_tok->curly_bracket_depth--;
-            if (c == '}' && current_tok->curly_bracket_depth == current_tok->curly_bracket_expr_start_depth) {
-                current_tok->curly_bracket_expr_start_depth--;
-                current_tok->kind = TOK_FSTRING_MODE;
-                current_tok->f_string_debug = 0;
-            }
-        }
-        break;
-    default:
-        break;
-    }
-
-    if (!Py_UNICODE_ISPRINTABLE(c)) {
-        char hex[9];
-        (void)PyOS_snprintf(hex, sizeof(hex), "%04X", c);
-        return MAKE_TOKEN(syntaxerror(tok, "invalid non-printable character U+%s", hex));
-    }
-
-    if( c == '=' && INSIDE_FSTRING_EXPR(current_tok)) {
-        current_tok->f_string_debug = 1;
-    }
-
-    /* Punctuation character */
-    p_start = tok->start;
-    p_end = tok->cur;
-    return MAKE_TOKEN(_PyToken_OneChar(c));
-}
-
-static int
-tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct token *token)
-{
-    const char *p_start = NULL;
-    const char *p_end = NULL;
-    int end_quote_size = 0;
-    int unicode_escape = 0;
-
-    tok->start = tok->cur;
-    tok->first_lineno = tok->lineno;
-    tok->starting_col_offset = tok->col_offset;
-
-    // If we start with a bracket, we defer to the normal mode as there is nothing for us to tokenize
-    // before it.
-    int start_char = tok_nextc(tok);
-    if (start_char == '{') {
-        int peek1 = tok_nextc(tok);
-        tok_backup(tok, peek1);
-        tok_backup(tok, start_char);
-        if (peek1 != '{') {
-            current_tok->curly_bracket_expr_start_depth++;
-            if (current_tok->curly_bracket_expr_start_depth >= MAX_EXPR_NESTING) {
-                return MAKE_TOKEN(syntaxerror(tok, "f-string: expressions nested too deeply"));
-            }
-            TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
-            return tok_get_normal_mode(tok, current_tok, token);
-        }
-    }
-    else {
-        tok_backup(tok, start_char);
-    }
-
-    // Check if we are at the end of the string
-    for (int i = 0; i < current_tok->f_string_quote_size; i++) {
-        int quote = tok_nextc(tok);
-        if (quote != current_tok->f_string_quote) {
-            tok_backup(tok, quote);
-            goto f_string_middle;
-        }
-    }
-
-    if (current_tok->last_expr_buffer != NULL) {
-        PyMem_Free(current_tok->last_expr_buffer);
-        current_tok->last_expr_buffer = NULL;
-        current_tok->last_expr_size = 0;
-        current_tok->last_expr_end = -1;
-    }
-
-    p_start = tok->start;
-    p_end = tok->cur;
-    tok->tok_mode_stack_index--;
-    return MAKE_TOKEN(FSTRING_END);
-
-f_string_middle:
-
-    while (end_quote_size != current_tok->f_string_quote_size) {
-        int c = tok_nextc(tok);
-        if (tok->done == E_ERROR) {
-            return MAKE_TOKEN(ERRORTOKEN);
-        }
-        if (c == EOF || (current_tok->f_string_quote_size == 1 && c == '\n')) {
-            if (tok->decoding_erred) {
-                return MAKE_TOKEN(ERRORTOKEN);
-            }
-
-            assert(tok->multi_line_start != NULL);
-            // shift the tok_state's location into
-            // the start of string, and report the error
-            // from the initial quote character
-            tok->cur = (char *)current_tok->f_string_start;
-            tok->cur++;
-            tok->line_start = current_tok->f_string_multi_line_start;
-            int start = tok->lineno;
-            tok->lineno = tok->first_lineno;
-
-            if (current_tok->f_string_quote_size == 3) {
-                return MAKE_TOKEN(syntaxerror(tok,
-                                    "unterminated triple-quoted f-string literal"
-                                    " (detected at line %d)", start));
-            }
-            else {
-                return MAKE_TOKEN(syntaxerror(tok,
-                                    "unterminated f-string literal (detected at"
-                                    " line %d)", start));
-            }
-        }
-
-        if (c == current_tok->f_string_quote) {
-            end_quote_size += 1;
-            continue;
-        } else {
-            end_quote_size = 0;
-        }
-
-        int in_format_spec = (
-                current_tok->last_expr_end != -1
-                &&
-                INSIDE_FSTRING_EXPR(current_tok)
-        );
-        if (c == '{') {
-            int peek = tok_nextc(tok);
-            if (peek != '{' || in_format_spec) {
-                tok_backup(tok, peek);
-                tok_backup(tok, c);
-                current_tok->curly_bracket_expr_start_depth++;
-                if (current_tok->curly_bracket_expr_start_depth >= MAX_EXPR_NESTING) {
-                    return MAKE_TOKEN(syntaxerror(tok, "f-string: expressions nested too deeply"));
-                }
-                TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
-                p_start = tok->start;
-                p_end = tok->cur;
-            } else {
-                p_start = tok->start;
-                p_end = tok->cur - 1;
-            }
-            return MAKE_TOKEN(FSTRING_MIDDLE);
-        } else if (c == '}') {
-            if (unicode_escape) {
-                p_start = tok->start;
-                p_end = tok->cur;
-                return MAKE_TOKEN(FSTRING_MIDDLE);
-            }
-            int peek = tok_nextc(tok);
-
-            // The tokenizer can only be in the format spec if we have already completed the expression
-            // scanning (indicated by the end of the expression being set) and we are not at the top level
-            // of the bracket stack (-1 is the top level). Since format specifiers can't legally use double
-            // brackets, we can bypass it here.
-            if (peek == '}' && !in_format_spec) {
-                p_start = tok->start;
-                p_end = tok->cur - 1;
-            } else {
-                tok_backup(tok, peek);
-                tok_backup(tok, c);
-                TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
-                p_start = tok->start;
-                p_end = tok->cur;
-            }
-            return MAKE_TOKEN(FSTRING_MIDDLE);
-        } else if (c == '\\') {
-            int peek = tok_nextc(tok);
-            // Special case when the backslash is right before a curly
-            // brace. We have to restore and return the control back
-            // to the loop for the next iteration.
-            if (peek == '{' || peek == '}') {
-                if (!current_tok->f_string_raw) {
-                    if (warn_invalid_escape_sequence(tok, peek)) {
-                        return MAKE_TOKEN(ERRORTOKEN);
-                    }
-                }
-                tok_backup(tok, peek);
-                continue;
-            }
-
-            if (!current_tok->f_string_raw) {
-                if (peek == 'N') {
-                    /* Handle named unicode escapes (\N{BULLET}) */
-                    peek = tok_nextc(tok);
-                    if (peek == '{') {
-                        unicode_escape = 1;
-                    } else {
-                        tok_backup(tok, peek);
-                    }
-                }
-            } /* else {
-                skip the escaped character
-            }*/
-        }
-    }
-
-    // Backup the f-string quotes to emit a final FSTRING_MIDDLE and
-    // add the quotes to the FSTRING_END in the next tokenizer iteration.
-    for (int i = 0; i < current_tok->f_string_quote_size; i++) {
-        tok_backup(tok, current_tok->f_string_quote);
-    }
-    p_start = tok->start;
-    p_end = tok->cur;
-    return MAKE_TOKEN(FSTRING_MIDDLE);
-}
-
-
-static int
-tok_get(struct tok_state *tok, struct token *token)
-{
-    tokenizer_mode *current_tok = TOK_GET_MODE(tok);
-    if (current_tok->kind == TOK_REGULAR_MODE) {
-        return tok_get_normal_mode(tok, current_tok, token);
-    } else {
-        return tok_get_fstring_mode(tok, current_tok, token);
-    }
-}
-
-int
-_PyTokenizer_Get(struct tok_state *tok, struct token *token)
-{
-    int result = tok_get(tok, token);
-    if (tok->decoding_erred) {
-        result = ERRORTOKEN;
-        tok->done = E_DECODE;
-    }
-    return result;
-}
-
-#if defined(__wasi__) || (defined(__EMSCRIPTEN__) && (__EMSCRIPTEN_major__ >= 3))
-// fdopen() with borrowed fd. WASI does not provide dup() and Emscripten's
-// dup() emulation with open() is slow.
-typedef union {
-    void *cookie;
-    int fd;
-} borrowed;
-
-static ssize_t
-borrow_read(void *cookie, char *buf, size_t size)
-{
-    borrowed b = {.cookie = cookie};
-    return read(b.fd, (void *)buf, size);
-}
-
-static FILE *
-fdopen_borrow(int fd) {
-    // supports only reading. seek fails. close and write are no-ops.
-    cookie_io_functions_t io_cb = {borrow_read, NULL, NULL, NULL};
-    borrowed b = {.fd = fd};
-    return fopencookie(b.cookie, "r", io_cb);
-}
-#else
-static FILE *
-fdopen_borrow(int fd) {
-    fd = _Py_dup(fd);
-    if (fd < 0) {
-        return NULL;
-    }
-    return fdopen(fd, "r");
-}
-#endif
-
-/* Get the encoding of a Python file. Check for the coding cookie and check if
-   the file starts with a BOM.
-
-   _PyTokenizer_FindEncodingFilename() returns NULL when it can't find the
-   encoding in the first or second line of the file (in which case the encoding
-   should be assumed to be UTF-8).
-
-   The char* returned is malloc'ed via PyMem_Malloc() and thus must be freed
-   by the caller. */
-
-char *
-_PyTokenizer_FindEncodingFilename(int fd, PyObject *filename)
-{
-    struct tok_state *tok;
-    FILE *fp;
-    char *encoding = NULL;
-
-    fp = fdopen_borrow(fd);
-    if (fp == NULL) {
-        return NULL;
-    }
-    tok = _PyTokenizer_FromFile(fp, NULL, NULL, NULL);
-    if (tok == NULL) {
-        fclose(fp);
-        return NULL;
-    }
-    if (filename != NULL) {
-        tok->filename = Py_NewRef(filename);
-    }
-    else {
-        tok->filename = PyUnicode_FromString("<string>");
-        if (tok->filename == NULL) {
-            fclose(fp);
-            _PyTokenizer_Free(tok);
-            return encoding;
-        }
-    }
-    struct token token;
-    // We don't want to report warnings here because it could cause infinite recursion
-    // if fetching the encoding shows a warning.
-    tok->report_warnings = 0;
-    while (tok->lineno < 2 && tok->done == E_OK) {
-        _PyTokenizer_Get(tok, &token);
-    }
-    fclose(fp);
-    if (tok->encoding) {
-        encoding = (char *)PyMem_Malloc(strlen(tok->encoding) + 1);
-        if (encoding) {
-            strcpy(encoding, tok->encoding);
-        }
-    }
-    _PyTokenizer_Free(tok);
-    return encoding;
-}
-
-#ifdef Py_DEBUG
-void
-tok_dump(int type, char *start, char *end)
-{
-    fprintf(stderr, "%s", _PyParser_TokenNames[type]);
-    if (type == NAME || type == NUMBER || type == STRING || type == OP)
-        fprintf(stderr, "(%.*s)", (int)(end - start), start);
-}
-#endif  // Py_DEBUG
diff --git a/Parser/tokenizer.h b/Parser/tokenizer.h
deleted file mode 100644
index 5e2171885ac75b..00000000000000
--- a/Parser/tokenizer.h
+++ /dev/null
@@ -1,147 +0,0 @@
-#ifndef Py_TOKENIZER_H
-#define Py_TOKENIZER_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "object.h"
-
-/* Tokenizer interface */
-
-#include "pycore_token.h" /* For token types */
-
-#define MAXINDENT 100       /* Max indentation level */
-#define MAXLEVEL 200        /* Max parentheses level */
-#define MAXFSTRINGLEVEL 150 /* Max f-string nesting level */
-
-enum decoding_state {
-    STATE_INIT,
-    STATE_SEEK_CODING,
-    STATE_NORMAL
-};
-
-enum interactive_underflow_t {
-    /* Normal mode of operation: return a new token when asked in interactie mode */
-    IUNDERFLOW_NORMAL,
-    /* Forcefully return ENDMARKER when asked for a new token in interactive mode. This
-     * can be used to prevent the tokenizer to prompt the user for new tokens */
-    IUNDERFLOW_STOP,
-};
-
-struct token {
-    int level;
-    int lineno, col_offset, end_lineno, end_col_offset;
-    const char *start, *end;
-    PyObject *metadata;
-};
-
-enum tokenizer_mode_kind_t {
-    TOK_REGULAR_MODE,
-    TOK_FSTRING_MODE,
-};
-
-#define MAX_EXPR_NESTING 3
-
-typedef struct _tokenizer_mode {
-    enum tokenizer_mode_kind_t kind;
-
-    int curly_bracket_depth;
-    int curly_bracket_expr_start_depth;
-
-    char f_string_quote;
-    int f_string_quote_size;
-    int f_string_raw;
-    const char* f_string_start;
-    const char* f_string_multi_line_start;
-
-    Py_ssize_t f_string_start_offset;
-    Py_ssize_t f_string_multi_line_start_offset;
-
-    Py_ssize_t last_expr_size;
-    Py_ssize_t last_expr_end;
-    char* last_expr_buffer;
-    int f_string_debug;
-} tokenizer_mode;
-
-/* Tokenizer state */
-struct tok_state {
-    /* Input state; buf <= cur <= inp <= end */
-    /* NB an entire line is held in the buffer */
-    char *buf;          /* Input buffer, or NULL; malloc'ed if fp != NULL */
-    char *cur;          /* Next character in buffer */
-    char *inp;          /* End of data in buffer */
-    int fp_interactive; /* If the file descriptor is interactive */
-    char *interactive_src_start; /* The start of the source parsed so far in interactive mode */
-    char *interactive_src_end; /* The end of the source parsed so far in interactive mode */
-    const char *end;    /* End of input buffer if buf != NULL */
-    const char *start;  /* Start of current token if not NULL */
-    int done;           /* E_OK normally, E_EOF at EOF, otherwise error code */
-    /* NB If done != E_OK, cur must be == inp!!! */
-    FILE *fp;           /* Rest of input; NULL if tokenizing a string */
-    int tabsize;        /* Tab spacing */
-    int indent;         /* Current indentation index */
-    int indstack[MAXINDENT];            /* Stack of indents */
-    int atbol;          /* Nonzero if at begin of new line */
-    int pendin;         /* Pending indents (if > 0) or dedents (if < 0) */
-    const char *prompt, *nextprompt;          /* For interactive prompting */
-    int lineno;         /* Current line number */
-    int first_lineno;   /* First line of a single line or multi line string
-                           expression (cf. issue 16806) */
-    int starting_col_offset; /* The column offset at the beginning of a token */
-    int col_offset;     /* Current col offset */
-    int level;          /* () [] {} Parentheses nesting level */
-            /* Used to allow free continuations inside them */
-    char parenstack[MAXLEVEL];
-    int parenlinenostack[MAXLEVEL];
-    int parencolstack[MAXLEVEL];
-    PyObject *filename;
-    /* Stuff for checking on different tab sizes */
-    int altindstack[MAXINDENT];         /* Stack of alternate indents */
-    /* Stuff for PEP 0263 */
-    enum decoding_state decoding_state;
-    int decoding_erred;         /* whether erred in decoding  */
-    char *encoding;         /* Source encoding. */
-    int cont_line;          /* whether we are in a continuation line. */
-    const char* line_start;     /* pointer to start of current line */
-    const char* multi_line_start; /* pointer to start of first line of
-                                     a single line or multi line string
-                                     expression (cf. issue 16806) */
-    PyObject *decoding_readline; /* open(...).readline */
-    PyObject *decoding_buffer;
-    const char* enc;        /* Encoding for the current str. */
-    char* str;          /* Source string being tokenized (if tokenizing from a string)*/
-    char* input;       /* Tokenizer's newline translated copy of the string. */
-
-    int type_comments;      /* Whether to look for type comments */
-
-    /* async/await related fields (still needed depending on feature_version) */
-    int async_hacks;     /* =1 if async/await aren't always keywords */
-    int async_def;        /* =1 if tokens are inside an 'async def' body. */
-    int async_def_indent; /* Indentation level of the outermost 'async def'. */
-    int async_def_nl;     /* =1 if the outermost 'async def' had at least one
-                             NEWLINE token after it. */
-    /* How to proceed when asked for a new token in interactive mode */
-    enum interactive_underflow_t interactive_underflow;
-    int report_warnings;
-    // TODO: Factor this into its own thing
-    tokenizer_mode tok_mode_stack[MAXFSTRINGLEVEL];
-    int tok_mode_stack_index;
-    int tok_report_warnings;
-#ifdef Py_DEBUG
-    int debug;
-#endif
-};
-
-extern struct tok_state *_PyTokenizer_FromString(const char *, int);
-extern struct tok_state *_PyTokenizer_FromUTF8(const char *, int);
-extern struct tok_state *_PyTokenizer_FromFile(FILE *, const char*,
-                                              const char *, const char *);
-extern void _PyTokenizer_Free(struct tok_state *);
-extern int _PyTokenizer_Get(struct tok_state *, struct token *);
-
-#define tok_dump _Py_tok_dump
-
-#ifdef __cplusplus
-}
-#endif
-#endif /* !Py_TOKENIZER_H */
diff --git a/Parser/tokenizer/file_tokenizer.c b/Parser/tokenizer/file_tokenizer.c
new file mode 100644
index 00000000000000..2750527da484aa
--- /dev/null
+++ b/Parser/tokenizer/file_tokenizer.c
@@ -0,0 +1,470 @@
+#include "Python.h"
+#include "pycore_call.h"
+#include "pycore_import.h"
+#include "pycore_fileutils.h"
+#include "errcode.h"
+
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // lseek(), read()
+#endif
+
+#include "helpers.h"
+#include "../lexer/state.h"
+#include "../lexer/lexer.h"
+#include "../lexer/buffer.h"
+
+static int
+tok_concatenate_interactive_new_line(struct tok_state *tok, const char *line) {
+    assert(tok->fp_interactive);
+
+    if (!line) {
+        return 0;
+    }
+
+    Py_ssize_t current_size = tok->interactive_src_end - tok->interactive_src_start;
+    Py_ssize_t line_size = strlen(line);
+    char last_char = line[line_size > 0 ? line_size - 1 : line_size];
+    if (last_char != '\n') {
+        line_size += 1;
+    }
+    char* new_str = tok->interactive_src_start;
+
+    new_str = PyMem_Realloc(new_str, current_size + line_size + 1);
+    if (!new_str) {
+        if (tok->interactive_src_start) {
+            PyMem_Free(tok->interactive_src_start);
+        }
+        tok->interactive_src_start = NULL;
+        tok->interactive_src_end = NULL;
+        tok->done = E_NOMEM;
+        return -1;
+    }
+    strcpy(new_str + current_size, line);
+    tok->implicit_newline = 0;
+    if (last_char != '\n') {
+        /* Last line does not end in \n, fake one */
+        new_str[current_size + line_size - 1] = '\n';
+        new_str[current_size + line_size] = '\0';
+        tok->implicit_newline = 1;
+    }
+    tok->interactive_src_start = new_str;
+    tok->interactive_src_end = new_str + current_size + line_size;
+    return 0;
+}
+
+static int
+tok_readline_raw(struct tok_state *tok)
+{
+    do {
+        if (!_PyLexer_tok_reserve_buf(tok, BUFSIZ)) {
+            return 0;
+        }
+        int n_chars = (int)(tok->end - tok->inp);
+        size_t line_size = 0;
+        char *line = _Py_UniversalNewlineFgetsWithSize(tok->inp, n_chars, tok->fp, NULL, &line_size);
+        if (line == NULL) {
+            return 1;
+        }
+        if (tok->fp_interactive &&
+            tok_concatenate_interactive_new_line(tok, line) == -1) {
+            return 0;
+        }
+        tok->inp += line_size;
+        if (tok->inp == tok->buf) {
+            return 0;
+        }
+    } while (tok->inp[-1] != '\n');
+    return 1;
+}
+
+static int
+tok_readline_recode(struct tok_state *tok) {
+    PyObject *line;
+    const  char *buf;
+    Py_ssize_t buflen;
+    line = tok->decoding_buffer;
+    if (line == NULL) {
+        line = PyObject_CallNoArgs(tok->decoding_readline);
+        if (line == NULL) {
+            _PyTokenizer_error_ret(tok);
+            goto error;
+        }
+    }
+    else {
+        tok->decoding_buffer = NULL;
+    }
+    buf = PyUnicode_AsUTF8AndSize(line, &buflen);
+    if (buf == NULL) {
+        _PyTokenizer_error_ret(tok);
+        goto error;
+    }
+    // Make room for the null terminator *and* potentially
+    // an extra newline character that we may need to artificially
+    // add.
+    size_t buffer_size = buflen + 2;
+    if (!_PyLexer_tok_reserve_buf(tok, buffer_size)) {
+        goto error;
+    }
+    memcpy(tok->inp, buf, buflen);
+    tok->inp += buflen;
+    *tok->inp = '\0';
+    if (tok->fp_interactive &&
+        tok_concatenate_interactive_new_line(tok, buf) == -1) {
+        goto error;
+    }
+    Py_DECREF(line);
+    return 1;
+error:
+    Py_XDECREF(line);
+    return 0;
+}
+
+/* Fetch the next byte from TOK. */
+static int fp_getc(struct tok_state *tok) {
+    return getc(tok->fp);
+}
+
+/* Unfetch the last byte back into TOK.  */
+static void fp_ungetc(int c, struct tok_state *tok) {
+    ungetc(c, tok->fp);
+}
+
+/* Set the readline function for TOK to a StreamReader's
+   readline function. The StreamReader is named ENC.
+
+   This function is called from _PyTokenizer_check_bom and _PyTokenizer_check_coding_spec.
+
+   ENC is usually identical to the future value of tok->encoding,
+   except for the (currently unsupported) case of UTF-16.
+
+   Return 1 on success, 0 on failure. */
+static int
+fp_setreadl(struct tok_state *tok, const char* enc)
+{
+    PyObject *readline, *open, *stream;
+    int fd;
+    long pos;
+
+    fd = fileno(tok->fp);
+    /* Due to buffering the file offset for fd can be different from the file
+     * position of tok->fp.  If tok->fp was opened in text mode on Windows,
+     * its file position counts CRLF as one char and can't be directly mapped
+     * to the file offset for fd.  Instead we step back one byte and read to
+     * the end of line.*/
+    pos = ftell(tok->fp);
+    if (pos == -1 ||
+        lseek(fd, (off_t)(pos > 0 ? pos - 1 : pos), SEEK_SET) == (off_t)-1) {
+        PyErr_SetFromErrnoWithFilename(PyExc_OSError, NULL);
+        return 0;
+    }
+
+    open = _PyImport_GetModuleAttrString("io", "open");
+    if (open == NULL) {
+        return 0;
+    }
+    stream = PyObject_CallFunction(open, "isisOOO",
+                    fd, "r", -1, enc, Py_None, Py_None, Py_False);
+    Py_DECREF(open);
+    if (stream == NULL) {
+        return 0;
+    }
+
+    readline = PyObject_GetAttr(stream, &_Py_ID(readline));
+    Py_DECREF(stream);
+    if (readline == NULL) {
+        return 0;
+    }
+    Py_XSETREF(tok->decoding_readline, readline);
+
+    if (pos > 0) {
+        PyObject *bufobj = _PyObject_CallNoArgs(readline);
+        if (bufobj == NULL) {
+            return 0;
+        }
+        Py_DECREF(bufobj);
+    }
+
+    return 1;
+}
+
+static int
+tok_underflow_interactive(struct tok_state *tok) {
+    if (tok->interactive_underflow == IUNDERFLOW_STOP) {
+        tok->done = E_INTERACT_STOP;
+        return 1;
+    }
+    char *newtok = PyOS_Readline(tok->fp ? tok->fp : stdin, stdout, tok->prompt);
+    if (newtok != NULL) {
+        char *translated = _PyTokenizer_translate_newlines(newtok, 0, 0, tok);
+        PyMem_Free(newtok);
+        if (translated == NULL) {
+            return 0;
+        }
+        newtok = translated;
+    }
+    if (tok->encoding && newtok && *newtok) {
+        /* Recode to UTF-8 */
+        Py_ssize_t buflen;
+        const char* buf;
+        PyObject *u = _PyTokenizer_translate_into_utf8(newtok, tok->encoding);
+        PyMem_Free(newtok);
+        if (u == NULL) {
+            tok->done = E_DECODE;
+            return 0;
+        }
+        buflen = PyBytes_GET_SIZE(u);
+        buf = PyBytes_AS_STRING(u);
+        newtok = PyMem_Malloc(buflen+1);
+        if (newtok == NULL) {
+            Py_DECREF(u);
+            tok->done = E_NOMEM;
+            return 0;
+        }
+        strcpy(newtok, buf);
+        Py_DECREF(u);
+    }
+    if (tok->fp_interactive &&
+        tok_concatenate_interactive_new_line(tok, newtok) == -1) {
+        PyMem_Free(newtok);
+        return 0;
+    }
+    if (tok->nextprompt != NULL) {
+        tok->prompt = tok->nextprompt;
+    }
+    if (newtok == NULL) {
+        tok->done = E_INTR;
+    }
+    else if (*newtok == '\0') {
+        PyMem_Free(newtok);
+        tok->done = E_EOF;
+    }
+    else if (tok->start != NULL) {
+        Py_ssize_t cur_multi_line_start = tok->multi_line_start - tok->buf;
+        _PyLexer_remember_fstring_buffers(tok);
+        size_t size = strlen(newtok);
+        ADVANCE_LINENO();
+        if (!_PyLexer_tok_reserve_buf(tok, size + 1)) {
+            PyMem_Free(tok->buf);
+            tok->buf = NULL;
+            PyMem_Free(newtok);
+            return 0;
+        }
+        memcpy(tok->cur, newtok, size + 1);
+        PyMem_Free(newtok);
+        tok->inp += size;
+        tok->multi_line_start = tok->buf + cur_multi_line_start;
+        _PyLexer_restore_fstring_buffers(tok);
+    }
+    else {
+        _PyLexer_remember_fstring_buffers(tok);
+        ADVANCE_LINENO();
+        PyMem_Free(tok->buf);
+        tok->buf = newtok;
+        tok->cur = tok->buf;
+        tok->line_start = tok->buf;
+        tok->inp = strchr(tok->buf, '\0');
+        tok->end = tok->inp + 1;
+        _PyLexer_restore_fstring_buffers(tok);
+    }
+    if (tok->done != E_OK) {
+        if (tok->prompt != NULL) {
+            PySys_WriteStderr("\n");
+        }
+        return 0;
+    }
+
+    if (tok->tok_mode_stack_index && !_PyLexer_update_fstring_expr(tok, 0)) {
+        return 0;
+    }
+    return 1;
+}
+
+static int
+tok_underflow_file(struct tok_state *tok) {
+    if (tok->start == NULL && !INSIDE_FSTRING(tok)) {
+        tok->cur = tok->inp = tok->buf;
+    }
+    if (tok->decoding_state == STATE_INIT) {
+        /* We have not yet determined the encoding.
+           If an encoding is found, use the file-pointer
+           reader functions from now on. */
+        if (!_PyTokenizer_check_bom(fp_getc, fp_ungetc, fp_setreadl, tok)) {
+            _PyTokenizer_error_ret(tok);
+            return 0;
+        }
+        assert(tok->decoding_state != STATE_INIT);
+    }
+    /* Read until '\n' or EOF */
+    if (tok->decoding_readline != NULL) {
+        /* We already have a codec associated with this input. */
+        if (!tok_readline_recode(tok)) {
+            return 0;
+        }
+    }
+    else {
+        /* We want a 'raw' read. */
+        if (!tok_readline_raw(tok)) {
+            return 0;
+        }
+    }
+    if (tok->inp == tok->cur) {
+        tok->done = E_EOF;
+        return 0;
+    }
+    tok->implicit_newline = 0;
+    if (tok->inp[-1] != '\n') {
+        assert(tok->inp + 1 < tok->end);
+        /* Last line does not end in \n, fake one */
+        *tok->inp++ = '\n';
+        *tok->inp = '\0';
+        tok->implicit_newline = 1;
+    }
+
+    if (tok->tok_mode_stack_index && !_PyLexer_update_fstring_expr(tok, 0)) {
+        return 0;
+    }
+
+    ADVANCE_LINENO();
+    if (tok->decoding_state != STATE_NORMAL) {
+        if (tok->lineno > 2) {
+            tok->decoding_state = STATE_NORMAL;
+        }
+        else if (!_PyTokenizer_check_coding_spec(tok->cur, strlen(tok->cur),
+                                    tok, fp_setreadl))
+        {
+            return 0;
+        }
+    }
+    /* The default encoding is UTF-8, so make sure we don't have any
+       non-UTF-8 sequences in it. */
+    if (!tok->encoding && !_PyTokenizer_ensure_utf8(tok->cur, tok)) {
+        _PyTokenizer_error_ret(tok);
+        return 0;
+    }
+    assert(tok->done == E_OK);
+    return tok->done == E_OK;
+}
+
+/* Set up tokenizer for file */
+struct tok_state *
+_PyTokenizer_FromFile(FILE *fp, const char* enc,
+                      const char *ps1, const char *ps2)
+{
+    struct tok_state *tok = _PyTokenizer_tok_new();
+    if (tok == NULL)
+        return NULL;
+    if ((tok->buf = (char *)PyMem_Malloc(BUFSIZ)) == NULL) {
+        _PyTokenizer_Free(tok);
+        return NULL;
+    }
+    tok->cur = tok->inp = tok->buf;
+    tok->end = tok->buf + BUFSIZ;
+    tok->fp = fp;
+    tok->prompt = ps1;
+    tok->nextprompt = ps2;
+    if (ps1 || ps2) {
+        tok->underflow = &tok_underflow_interactive;
+    } else {
+        tok->underflow = &tok_underflow_file;
+    }
+    if (enc != NULL) {
+        /* Must copy encoding declaration since it
+           gets copied into the parse tree. */
+        tok->encoding = _PyTokenizer_new_string(enc, strlen(enc), tok);
+        if (!tok->encoding) {
+            _PyTokenizer_Free(tok);
+            return NULL;
+        }
+        tok->decoding_state = STATE_NORMAL;
+    }
+    return tok;
+}
+
+#if defined(__wasi__) || (defined(__EMSCRIPTEN__) && (__EMSCRIPTEN_major__ >= 3))
+// fdopen() with borrowed fd. WASI does not provide dup() and Emscripten's
+// dup() emulation with open() is slow.
+typedef union {
+    void *cookie;
+    int fd;
+} borrowed;
+
+static ssize_t
+borrow_read(void *cookie, char *buf, size_t size)
+{
+    borrowed b = {.cookie = cookie};
+    return read(b.fd, (void *)buf, size);
+}
+
+static FILE *
+fdopen_borrow(int fd) {
+    // supports only reading. seek fails. close and write are no-ops.
+    cookie_io_functions_t io_cb = {borrow_read, NULL, NULL, NULL};
+    borrowed b = {.fd = fd};
+    return fopencookie(b.cookie, "r", io_cb);
+}
+#else
+static FILE *
+fdopen_borrow(int fd) {
+    fd = _Py_dup(fd);
+    if (fd < 0) {
+        return NULL;
+    }
+    return fdopen(fd, "r");
+}
+#endif
+
+/* Get the encoding of a Python file. Check for the coding cookie and check if
+   the file starts with a BOM.
+
+   _PyTokenizer_FindEncodingFilename() returns NULL when it can't find the
+   encoding in the first or second line of the file (in which case the encoding
+   should be assumed to be UTF-8).
+
+   The char* returned is malloc'ed via PyMem_Malloc() and thus must be freed
+   by the caller. */
+char *
+_PyTokenizer_FindEncodingFilename(int fd, PyObject *filename)
+{
+    struct tok_state *tok;
+    FILE *fp;
+    char *encoding = NULL;
+
+    fp = fdopen_borrow(fd);
+    if (fp == NULL) {
+        return NULL;
+    }
+    tok = _PyTokenizer_FromFile(fp, NULL, NULL, NULL);
+    if (tok == NULL) {
+        fclose(fp);
+        return NULL;
+    }
+    if (filename != NULL) {
+        tok->filename = Py_NewRef(filename);
+    }
+    else {
+        tok->filename = PyUnicode_FromString("<string>");
+        if (tok->filename == NULL) {
+            fclose(fp);
+            _PyTokenizer_Free(tok);
+            return encoding;
+        }
+    }
+    struct token token;
+    // We don't want to report warnings here because it could cause infinite recursion
+    // if fetching the encoding shows a warning.
+    tok->report_warnings = 0;
+    while (tok->lineno < 2 && tok->done == E_OK) {
+        _PyToken_Init(&token);
+        _PyTokenizer_Get(tok, &token);
+        _PyToken_Free(&token);
+    }
+    fclose(fp);
+    if (tok->encoding) {
+        encoding = (char *)PyMem_Malloc(strlen(tok->encoding) + 1);
+        if (encoding) {
+            strcpy(encoding, tok->encoding);
+        }
+    }
+    _PyTokenizer_Free(tok);
+    return encoding;
+}
diff --git a/Parser/tokenizer/helpers.c b/Parser/tokenizer/helpers.c
new file mode 100644
index 00000000000000..9c9d05bbef0f1a
--- /dev/null
+++ b/Parser/tokenizer/helpers.c
@@ -0,0 +1,552 @@
+#include "Python.h"
+#include "errcode.h"
+#include "pycore_token.h"
+
+#include "../lexer/state.h"
+
+
+/* ############## ERRORS ############## */
+
+static int
+_syntaxerror_range(struct tok_state *tok, const char *format,
+                   int col_offset, int end_col_offset,
+                   va_list vargs)
+{
+    // In release builds, we don't want to overwrite a previous error, but in debug builds we
+    // want to fail if we are not doing it so we can fix it.
+    assert(tok->done != E_ERROR);
+    if (tok->done == E_ERROR) {
+        return ERRORTOKEN;
+    }
+    PyObject *errmsg, *errtext, *args;
+    errmsg = PyUnicode_FromFormatV(format, vargs);
+    if (!errmsg) {
+        goto error;
+    }
+
+    errtext = PyUnicode_DecodeUTF8(tok->line_start, tok->cur - tok->line_start,
+                                   "replace");
+    if (!errtext) {
+        goto error;
+    }
+
+    if (col_offset == -1) {
+        col_offset = (int)PyUnicode_GET_LENGTH(errtext);
+    }
+    if (end_col_offset == -1) {
+        end_col_offset = col_offset;
+    }
+
+    Py_ssize_t line_len = strcspn(tok->line_start, "\n");
+    if (line_len != tok->cur - tok->line_start) {
+        Py_DECREF(errtext);
+        errtext = PyUnicode_DecodeUTF8(tok->line_start, line_len,
+                                       "replace");
+    }
+    if (!errtext) {
+        goto error;
+    }
+
+    args = Py_BuildValue("(O(OiiNii))", errmsg, tok->filename, tok->lineno,
+                         col_offset, errtext, tok->lineno, end_col_offset);
+    if (args) {
+        PyErr_SetObject(PyExc_SyntaxError, args);
+        Py_DECREF(args);
+    }
+
+error:
+    Py_XDECREF(errmsg);
+    tok->done = E_ERROR;
+    return ERRORTOKEN;
+}
+
+int
+_PyTokenizer_syntaxerror(struct tok_state *tok, const char *format, ...)
+{
+    // This errors are cleaned on startup. Todo: Fix it.
+    va_list vargs;
+    va_start(vargs, format);
+    int ret = _syntaxerror_range(tok, format, -1, -1, vargs);
+    va_end(vargs);
+    return ret;
+}
+
+int
+_PyTokenizer_syntaxerror_known_range(struct tok_state *tok,
+                        int col_offset, int end_col_offset,
+                        const char *format, ...)
+{
+    va_list vargs;
+    va_start(vargs, format);
+    int ret = _syntaxerror_range(tok, format, col_offset, end_col_offset, vargs);
+    va_end(vargs);
+    return ret;
+}
+
+int
+_PyTokenizer_indenterror(struct tok_state *tok)
+{
+    tok->done = E_TABSPACE;
+    tok->cur = tok->inp;
+    return ERRORTOKEN;
+}
+
+char *
+_PyTokenizer_error_ret(struct tok_state *tok) /* XXX */
+{
+    tok->decoding_erred = 1;
+    if ((tok->fp != NULL || tok->readline != NULL) && tok->buf != NULL) {/* see _PyTokenizer_Free */
+        PyMem_Free(tok->buf);
+    }
+    tok->buf = tok->cur = tok->inp = NULL;
+    tok->start = NULL;
+    tok->end = NULL;
+    tok->done = E_DECODE;
+    return NULL;                /* as if it were EOF */
+}
+
+int
+_PyTokenizer_warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char)
+{
+    if (!tok->report_warnings) {
+        return 0;
+    }
+
+    PyObject *msg = PyUnicode_FromFormat(
+        "invalid escape sequence '\\%c'",
+        (char) first_invalid_escape_char
+    );
+
+    if (msg == NULL) {
+        return -1;
+    }
+
+    if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning, msg, tok->filename,
+                                 tok->lineno, NULL, NULL) < 0) {
+        Py_DECREF(msg);
+
+        if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
+            /* Replace the SyntaxWarning exception with a SyntaxError
+               to get a more accurate error report */
+            PyErr_Clear();
+            return _PyTokenizer_syntaxerror(tok, "invalid escape sequence '\\%c'", (char) first_invalid_escape_char);
+        }
+
+        return -1;
+    }
+
+    Py_DECREF(msg);
+    return 0;
+}
+
+int
+_PyTokenizer_parser_warn(struct tok_state *tok, PyObject *category, const char *format, ...)
+{
+    if (!tok->report_warnings) {
+        return 0;
+    }
+
+    PyObject *errmsg;
+    va_list vargs;
+    va_start(vargs, format);
+    errmsg = PyUnicode_FromFormatV(format, vargs);
+    va_end(vargs);
+    if (!errmsg) {
+        goto error;
+    }
+
+    if (PyErr_WarnExplicitObject(category, errmsg, tok->filename,
+                                 tok->lineno, NULL, NULL) < 0) {
+        if (PyErr_ExceptionMatches(category)) {
+            /* Replace the DeprecationWarning exception with a SyntaxError
+               to get a more accurate error report */
+            PyErr_Clear();
+            _PyTokenizer_syntaxerror(tok, "%U", errmsg);
+        }
+        goto error;
+    }
+    Py_DECREF(errmsg);
+    return 0;
+
+error:
+    Py_XDECREF(errmsg);
+    tok->done = E_ERROR;
+    return -1;
+}
+
+
+/* ############## STRING MANIPULATION ############## */
+
+char *
+_PyTokenizer_new_string(const char *s, Py_ssize_t len, struct tok_state *tok)
+{
+    char* result = (char *)PyMem_Malloc(len + 1);
+    if (!result) {
+        tok->done = E_NOMEM;
+        return NULL;
+    }
+    memcpy(result, s, len);
+    result[len] = '\0';
+    return result;
+}
+
+PyObject *
+_PyTokenizer_translate_into_utf8(const char* str, const char* enc) {
+    PyObject *utf8;
+    PyObject* buf = PyUnicode_Decode(str, strlen(str), enc, NULL);
+    if (buf == NULL)
+        return NULL;
+    utf8 = PyUnicode_AsUTF8String(buf);
+    Py_DECREF(buf);
+    return utf8;
+}
+
+char *
+_PyTokenizer_translate_newlines(const char *s, int exec_input, int preserve_crlf,
+                   struct tok_state *tok) {
+    int skip_next_lf = 0;
+    size_t needed_length = strlen(s) + 2, final_length;
+    char *buf, *current;
+    char c = '\0';
+    buf = PyMem_Malloc(needed_length);
+    if (buf == NULL) {
+        tok->done = E_NOMEM;
+        return NULL;
+    }
+    for (current = buf; *s; s++, current++) {
+        c = *s;
+        if (skip_next_lf) {
+            skip_next_lf = 0;
+            if (c == '\n') {
+                c = *++s;
+                if (!c)
+                    break;
+            }
+        }
+        if (!preserve_crlf && c == '\r') {
+            skip_next_lf = 1;
+            c = '\n';
+        }
+        *current = c;
+    }
+    /* If this is exec input, add a newline to the end of the string if
+       there isn't one already. */
+    if (exec_input && c != '\n' && c != '\0') {
+        *current = '\n';
+        current++;
+    }
+    *current = '\0';
+    final_length = current - buf + 1;
+    if (final_length < needed_length && final_length) {
+        /* should never fail */
+        char* result = PyMem_Realloc(buf, final_length);
+        if (result == NULL) {
+            PyMem_Free(buf);
+        }
+        buf = result;
+    }
+    return buf;
+}
+
+/* ############## ENCODING STUFF ############## */
+
+
+/* See whether the file starts with a BOM. If it does,
+   invoke the set_readline function with the new encoding.
+   Return 1 on success, 0 on failure.  */
+int
+_PyTokenizer_check_bom(int get_char(struct tok_state *),
+          void unget_char(int, struct tok_state *),
+          int set_readline(struct tok_state *, const char *),
+          struct tok_state *tok)
+{
+    int ch1, ch2, ch3;
+    ch1 = get_char(tok);
+    tok->decoding_state = STATE_SEEK_CODING;
+    if (ch1 == EOF) {
+        return 1;
+    } else if (ch1 == 0xEF) {
+        ch2 = get_char(tok);
+        if (ch2 != 0xBB) {
+            unget_char(ch2, tok);
+            unget_char(ch1, tok);
+            return 1;
+        }
+        ch3 = get_char(tok);
+        if (ch3 != 0xBF) {
+            unget_char(ch3, tok);
+            unget_char(ch2, tok);
+            unget_char(ch1, tok);
+            return 1;
+        }
+    } else {
+        unget_char(ch1, tok);
+        return 1;
+    }
+    if (tok->encoding != NULL)
+        PyMem_Free(tok->encoding);
+    tok->encoding = _PyTokenizer_new_string("utf-8", 5, tok);
+    if (!tok->encoding)
+        return 0;
+    /* No need to set_readline: input is already utf-8 */
+    return 1;
+}
+
+static const char *
+get_normal_name(const char *s)  /* for utf-8 and latin-1 */
+{
+    char buf[13];
+    int i;
+    for (i = 0; i < 12; i++) {
+        int c = s[i];
+        if (c == '\0')
+            break;
+        else if (c == '_')
+            buf[i] = '-';
+        else
+            buf[i] = Py_TOLOWER(c);
+    }
+    buf[i] = '\0';
+    if (strcmp(buf, "utf-8") == 0 ||
+        strncmp(buf, "utf-8-", 6) == 0)
+        return "utf-8";
+    else if (strcmp(buf, "latin-1") == 0 ||
+             strcmp(buf, "iso-8859-1") == 0 ||
+             strcmp(buf, "iso-latin-1") == 0 ||
+             strncmp(buf, "latin-1-", 8) == 0 ||
+             strncmp(buf, "iso-8859-1-", 11) == 0 ||
+             strncmp(buf, "iso-latin-1-", 12) == 0)
+        return "iso-8859-1";
+    else
+        return s;
+}
+
+/* Return the coding spec in S, or NULL if none is found.  */
+static int
+get_coding_spec(const char *s, char **spec, Py_ssize_t size, struct tok_state *tok)
+{
+    Py_ssize_t i;
+    *spec = NULL;
+    /* Coding spec must be in a comment, and that comment must be
+     * the only statement on the source code line. */
+    for (i = 0; i < size - 6; i++) {
+        if (s[i] == '#')
+            break;
+        if (s[i] != ' ' && s[i] != '\t' && s[i] != '\014')
+            return 1;
+    }
+    for (; i < size - 6; i++) { /* XXX inefficient search */
+        const char* t = s + i;
+        if (memcmp(t, "coding", 6) == 0) {
+            const char* begin = NULL;
+            t += 6;
+            if (t[0] != ':' && t[0] != '=')
+                continue;
+            do {
+                t++;
+            } while (t[0] == ' ' || t[0] == '\t');
+
+            begin = t;
+            while (Py_ISALNUM(t[0]) ||
+                   t[0] == '-' || t[0] == '_' || t[0] == '.')
+                t++;
+
+            if (begin < t) {
+                char* r = _PyTokenizer_new_string(begin, t - begin, tok);
+                const char* q;
+                if (!r)
+                    return 0;
+                q = get_normal_name(r);
+                if (r != q) {
+                    PyMem_Free(r);
+                    r = _PyTokenizer_new_string(q, strlen(q), tok);
+                    if (!r)
+                        return 0;
+                }
+                *spec = r;
+                break;
+            }
+        }
+    }
+    return 1;
+}
+
+/* Check whether the line contains a coding spec. If it does,
+   invoke the set_readline function for the new encoding.
+   This function receives the tok_state and the new encoding.
+   Return 1 on success, 0 on failure.  */
+int
+_PyTokenizer_check_coding_spec(const char* line, Py_ssize_t size, struct tok_state *tok,
+                  int set_readline(struct tok_state *, const char *))
+{
+    char *cs;
+    if (tok->cont_line) {
+        /* It's a continuation line, so it can't be a coding spec. */
+        tok->decoding_state = STATE_NORMAL;
+        return 1;
+    }
+    if (!get_coding_spec(line, &cs, size, tok)) {
+        return 0;
+    }
+    if (!cs) {
+        Py_ssize_t i;
+        for (i = 0; i < size; i++) {
+            if (line[i] == '#' || line[i] == '\n' || line[i] == '\r')
+                break;
+            if (line[i] != ' ' && line[i] != '\t' && line[i] != '\014') {
+                /* Stop checking coding spec after a line containing
+                 * anything except a comment. */
+                tok->decoding_state = STATE_NORMAL;
+                break;
+            }
+        }
+        return 1;
+    }
+    tok->decoding_state = STATE_NORMAL;
+    if (tok->encoding == NULL) {
+        assert(tok->decoding_readline == NULL);
+        if (strcmp(cs, "utf-8") != 0 && !set_readline(tok, cs)) {
+            _PyTokenizer_error_ret(tok);
+            PyErr_Format(PyExc_SyntaxError, "encoding problem: %s", cs);
+            PyMem_Free(cs);
+            return 0;
+        }
+        tok->encoding = cs;
+    } else {                /* then, compare cs with BOM */
+        if (strcmp(tok->encoding, cs) != 0) {
+            _PyTokenizer_error_ret(tok);
+            PyErr_Format(PyExc_SyntaxError,
+                         "encoding problem: %s with BOM", cs);
+            PyMem_Free(cs);
+            return 0;
+        }
+        PyMem_Free(cs);
+    }
+    return 1;
+}
+
+/* Check whether the characters at s start a valid
+   UTF-8 sequence. Return the number of characters forming
+   the sequence if yes, 0 if not.  The special cases match
+   those in stringlib/codecs.h:utf8_decode.
+*/
+static int
+valid_utf8(const unsigned char* s)
+{
+    int expected = 0;
+    int length;
+    if (*s < 0x80) {
+        /* single-byte code */
+        return 1;
+    }
+    else if (*s < 0xE0) {
+        /* \xC2\x80-\xDF\xBF -- 0080-07FF */
+        if (*s < 0xC2) {
+            /* invalid sequence
+               \x80-\xBF -- continuation byte
+               \xC0-\xC1 -- fake 0000-007F */
+            return 0;
+        }
+        expected = 1;
+    }
+    else if (*s < 0xF0) {
+        /* \xE0\xA0\x80-\xEF\xBF\xBF -- 0800-FFFF */
+        if (*s == 0xE0 && *(s + 1) < 0xA0) {
+            /* invalid sequence
+               \xE0\x80\x80-\xE0\x9F\xBF -- fake 0000-0800 */
+            return 0;
+        }
+        else if (*s == 0xED && *(s + 1) >= 0xA0) {
+            /* Decoding UTF-8 sequences in range \xED\xA0\x80-\xED\xBF\xBF
+               will result in surrogates in range D800-DFFF. Surrogates are
+               not valid UTF-8 so they are rejected.
+               See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf
+               (table 3-7) and http://www.rfc-editor.org/rfc/rfc3629.txt */
+            return 0;
+        }
+        expected = 2;
+    }
+    else if (*s < 0xF5) {
+        /* \xF0\x90\x80\x80-\xF4\x8F\xBF\xBF -- 10000-10FFFF */
+        if (*(s + 1) < 0x90 ? *s == 0xF0 : *s == 0xF4) {
+            /* invalid sequence -- one of:
+               \xF0\x80\x80\x80-\xF0\x8F\xBF\xBF -- fake 0000-FFFF
+               \xF4\x90\x80\x80- -- 110000- overflow */
+            return 0;
+        }
+        expected = 3;
+    }
+    else {
+        /* invalid start byte */
+        return 0;
+    }
+    length = expected + 1;
+    for (; expected; expected--)
+        if (s[expected] < 0x80 || s[expected] >= 0xC0)
+            return 0;
+    return length;
+}
+
+int
+_PyTokenizer_ensure_utf8(char *line, struct tok_state *tok)
+{
+    int badchar = 0;
+    unsigned char *c;
+    int length;
+    for (c = (unsigned char *)line; *c; c += length) {
+        if (!(length = valid_utf8(c))) {
+            badchar = *c;
+            break;
+        }
+    }
+    if (badchar) {
+        PyErr_Format(PyExc_SyntaxError,
+                     "Non-UTF-8 code starting with '\\x%.2x' "
+                     "in file %U on line %i, "
+                     "but no encoding declared; "
+                     "see https://peps.python.org/pep-0263/ for details",
+                     badchar, tok->filename, tok->lineno);
+        return 0;
+    }
+    return 1;
+}
+
+
+/* ############## DEBUGGING STUFF ############## */
+
+#ifdef Py_DEBUG
+void
+_PyTokenizer_print_escape(FILE *f, const char *s, Py_ssize_t size)
+{
+    if (s == NULL) {
+        fputs("NULL", f);
+        return;
+    }
+    putc('"', f);
+    while (size-- > 0) {
+        unsigned char c = *s++;
+        switch (c) {
+            case '\n': fputs("\\n", f); break;
+            case '\r': fputs("\\r", f); break;
+            case '\t': fputs("\\t", f); break;
+            case '\f': fputs("\\f", f); break;
+            case '\'': fputs("\\'", f); break;
+            case '"': fputs("\\\"", f); break;
+            default:
+                if (0x20 <= c && c <= 0x7f)
+                    putc(c, f);
+                else
+                    fprintf(f, "\\x%02x", c);
+        }
+    }
+    putc('"', f);
+}
+
+void
+_PyTokenizer_tok_dump(int type, char *start, char *end)
+{
+    fprintf(stderr, "%s", _PyParser_TokenNames[type]);
+    if (type == NAME || type == NUMBER || type == STRING || type == OP)
+        fprintf(stderr, "(%.*s)", (int)(end - start), start);
+}
+#endif
diff --git a/Parser/tokenizer/helpers.h b/Parser/tokenizer/helpers.h
new file mode 100644
index 00000000000000..42ea13cd1f853f
--- /dev/null
+++ b/Parser/tokenizer/helpers.h
@@ -0,0 +1,37 @@
+#ifndef _PY_TOKENIZER_HELPERS_H_
+#define _PY_TOKENIZER_HELPERS_H_
+
+#include "Python.h"
+
+#include "../lexer/state.h"
+
+#define ADVANCE_LINENO() \
+            tok->lineno++; \
+            tok->col_offset = 0;
+
+int _PyTokenizer_syntaxerror(struct tok_state *tok, const char *format, ...);
+int _PyTokenizer_syntaxerror_known_range(struct tok_state *tok, int col_offset, int end_col_offset, const char *format, ...);
+int _PyTokenizer_indenterror(struct tok_state *tok);
+int _PyTokenizer_warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char);
+int _PyTokenizer_parser_warn(struct tok_state *tok, PyObject *category, const char *format, ...);
+char *_PyTokenizer_error_ret(struct tok_state *tok);
+
+char *_PyTokenizer_new_string(const char *s, Py_ssize_t len, struct tok_state *tok);
+char *_PyTokenizer_translate_newlines(const char *s, int exec_input, int preserve_crlf, struct tok_state *tok);
+PyObject *_PyTokenizer_translate_into_utf8(const char* str, const char* enc);
+
+int _PyTokenizer_check_bom(int get_char(struct tok_state *),
+          void unget_char(int, struct tok_state *),
+          int set_readline(struct tok_state *, const char *),
+          struct tok_state *tok);
+int _PyTokenizer_check_coding_spec(const char* line, Py_ssize_t size, struct tok_state *tok,
+                  int set_readline(struct tok_state *, const char *));
+int _PyTokenizer_ensure_utf8(char *line, struct tok_state *tok);
+
+#ifdef Py_DEBUG
+void _PyTokenizer_print_escape(FILE *f, const char *s, Py_ssize_t size);
+void _PyTokenizer_tok_dump(int type, char *start, char *end);
+#endif
+
+
+#endif
diff --git a/Parser/tokenizer/readline_tokenizer.c b/Parser/tokenizer/readline_tokenizer.c
new file mode 100644
index 00000000000000..a2637af9902dd3
--- /dev/null
+++ b/Parser/tokenizer/readline_tokenizer.c
@@ -0,0 +1,134 @@
+#include "Python.h"
+#include "errcode.h"
+
+#include "helpers.h"
+#include "../lexer/lexer.h"
+#include "../lexer/state.h"
+#include "../lexer/buffer.h"
+
+static int
+tok_readline_string(struct tok_state* tok) {
+    PyObject* line = NULL;
+    PyObject* raw_line = PyObject_CallNoArgs(tok->readline);
+    if (raw_line == NULL) {
+        if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
+            PyErr_Clear();
+            return 1;
+        }
+        _PyTokenizer_error_ret(tok);
+        goto error;
+    }
+    if(tok->encoding != NULL) {
+        if (!PyBytes_Check(raw_line)) {
+            PyErr_Format(PyExc_TypeError, "readline() returned a non-bytes object");
+            _PyTokenizer_error_ret(tok);
+            goto error;
+        }
+        line = PyUnicode_Decode(PyBytes_AS_STRING(raw_line), PyBytes_GET_SIZE(raw_line),
+                                tok->encoding, "replace");
+        Py_CLEAR(raw_line);
+        if (line == NULL) {
+            _PyTokenizer_error_ret(tok);
+            goto error;
+        }
+    } else {
+        if(!PyUnicode_Check(raw_line)) {
+            PyErr_Format(PyExc_TypeError, "readline() returned a non-string object");
+            _PyTokenizer_error_ret(tok);
+            goto error;
+        }
+        line = raw_line;
+        raw_line = NULL;
+    }
+    Py_ssize_t buflen;
+    const char* buf = PyUnicode_AsUTF8AndSize(line, &buflen);
+    if (buf == NULL) {
+        _PyTokenizer_error_ret(tok);
+        goto error;
+    }
+
+    // Make room for the null terminator *and* potentially
+    // an extra newline character that we may need to artificially
+    // add.
+    size_t buffer_size = buflen + 2;
+    if (!_PyLexer_tok_reserve_buf(tok, buffer_size)) {
+        goto error;
+    }
+    memcpy(tok->inp, buf, buflen);
+    tok->inp += buflen;
+    *tok->inp = '\0';
+
+    tok->line_start = tok->cur;
+    Py_DECREF(line);
+    return 1;
+error:
+    Py_XDECREF(raw_line);
+    Py_XDECREF(line);
+    return 0;
+}
+
+static int
+tok_underflow_readline(struct tok_state* tok) {
+    assert(tok->decoding_state == STATE_NORMAL);
+    assert(tok->fp == NULL && tok->input == NULL && tok->decoding_readline == NULL);
+    if (tok->start == NULL && !INSIDE_FSTRING(tok)) {
+        tok->cur = tok->inp = tok->buf;
+    }
+    if (!tok_readline_string(tok)) {
+        return 0;
+    }
+    if (tok->inp == tok->cur) {
+        tok->done = E_EOF;
+        return 0;
+    }
+    tok->implicit_newline = 0;
+    if (tok->inp[-1] != '\n') {
+        assert(tok->inp + 1 < tok->end);
+        /* Last line does not end in \n, fake one */
+        *tok->inp++ = '\n';
+        *tok->inp = '\0';
+        tok->implicit_newline = 1;
+    }
+
+    if (tok->tok_mode_stack_index && !_PyLexer_update_fstring_expr(tok, 0)) {
+        return 0;
+    }
+
+    ADVANCE_LINENO();
+    /* The default encoding is UTF-8, so make sure we don't have any
+       non-UTF-8 sequences in it. */
+    if (!tok->encoding && !_PyTokenizer_ensure_utf8(tok->cur, tok)) {
+        _PyTokenizer_error_ret(tok);
+        return 0;
+    }
+    assert(tok->done == E_OK);
+    return tok->done == E_OK;
+}
+
+struct tok_state *
+_PyTokenizer_FromReadline(PyObject* readline, const char* enc,
+                          int exec_input, int preserve_crlf)
+{
+    struct tok_state *tok = _PyTokenizer_tok_new();
+    if (tok == NULL)
+        return NULL;
+    if ((tok->buf = (char *)PyMem_Malloc(BUFSIZ)) == NULL) {
+        _PyTokenizer_Free(tok);
+        return NULL;
+    }
+    tok->cur = tok->inp = tok->buf;
+    tok->end = tok->buf + BUFSIZ;
+    tok->fp = NULL;
+    if (enc != NULL) {
+        tok->encoding = _PyTokenizer_new_string(enc, strlen(enc), tok);
+        if (!tok->encoding) {
+            _PyTokenizer_Free(tok);
+            return NULL;
+        }
+    }
+    tok->decoding_state = STATE_NORMAL;
+    tok->underflow = &tok_underflow_readline;
+    Py_INCREF(readline);
+    tok->readline = readline;
+    return tok;
+}
diff --git a/Parser/tokenizer/string_tokenizer.c b/Parser/tokenizer/string_tokenizer.c
new file mode 100644
index 00000000000000..0c26d5df8d4a40
--- /dev/null
+++ b/Parser/tokenizer/string_tokenizer.c
@@ -0,0 +1,129 @@
+#include "Python.h"
+#include "errcode.h"
+
+#include "helpers.h"
+#include "../lexer/state.h"
+
+static int
+tok_underflow_string(struct tok_state *tok) {
+    char *end = strchr(tok->inp, '\n');
+    if (end != NULL) {
+        end++;
+    }
+    else {
+        end = strchr(tok->inp, '\0');
+        if (end == tok->inp) {
+            tok->done = E_EOF;
+            return 0;
+        }
+    }
+    if (tok->start == NULL) {
+        tok->buf = tok->cur;
+    }
+    tok->line_start = tok->cur;
+    ADVANCE_LINENO();
+    tok->inp = end;
+    return 1;
+}
+
+/* Fetch a byte from TOK, using the string buffer. */
+static int
+buf_getc(struct tok_state *tok) {
+    return Py_CHARMASK(*tok->str++);
+}
+
+/* Unfetch a byte from TOK, using the string buffer. */
+static void
+buf_ungetc(int c, struct tok_state *tok) {
+    tok->str--;
+    assert(Py_CHARMASK(*tok->str) == c);        /* tok->cur may point to read-only segment */
+}
+
+/* Set the readline function for TOK to ENC. For the string-based
+   tokenizer, this means to just record the encoding. */
+static int
+buf_setreadl(struct tok_state *tok, const char* enc) {
+    tok->enc = enc;
+    return 1;
+}
+
+/* Decode a byte string STR for use as the buffer of TOK.
+   Look for encoding declarations inside STR, and record them
+   inside TOK.  */
+static char *
+decode_str(const char *input, int single, struct tok_state *tok, int preserve_crlf)
+{
+    PyObject* utf8 = NULL;
+    char *str;
+    const char *s;
+    const char *newl[2] = {NULL, NULL};
+    int lineno = 0;
+    tok->input = str = _PyTokenizer_translate_newlines(input, single, preserve_crlf, tok);
+    if (str == NULL)
+        return NULL;
+    tok->enc = NULL;
+    tok->str = str;
+    if (!_PyTokenizer_check_bom(buf_getc, buf_ungetc, buf_setreadl, tok))
+        return _PyTokenizer_error_ret(tok);
+    str = tok->str;             /* string after BOM if any */
+    assert(str);
+    if (tok->enc != NULL) {
+        utf8 = _PyTokenizer_translate_into_utf8(str, tok->enc);
+        if (utf8 == NULL)
+            return _PyTokenizer_error_ret(tok);
+        str = PyBytes_AsString(utf8);
+    }
+    for (s = str;; s++) {
+        if (*s == '\0') break;
+        else if (*s == '\n') {
+            assert(lineno < 2);
+            newl[lineno] = s;
+            lineno++;
+            if (lineno == 2) break;
+        }
+    }
+    tok->enc = NULL;
+    /* need to check line 1 and 2 separately since check_coding_spec
+       assumes a single line as input */
+    if (newl[0]) {
+        if (!_PyTokenizer_check_coding_spec(str, newl[0] - str, tok, buf_setreadl)) {
+            return NULL;
+        }
+        if (tok->enc == NULL && tok->decoding_state != STATE_NORMAL && newl[1]) {
+            if (!_PyTokenizer_check_coding_spec(newl[0]+1, newl[1] - newl[0],
+                                   tok, buf_setreadl))
+                return NULL;
+        }
+    }
+    if (tok->enc != NULL) {
+        assert(utf8 == NULL);
+        utf8 = _PyTokenizer_translate_into_utf8(str, tok->enc);
+        if (utf8 == NULL)
+            return _PyTokenizer_error_ret(tok);
+        str = PyBytes_AS_STRING(utf8);
+    }
+    assert(tok->decoding_buffer == NULL);
+    tok->decoding_buffer = utf8; /* CAUTION */
+    return str;
+}
+
+/* Set up tokenizer for string */
+struct tok_state *
+_PyTokenizer_FromString(const char *str, int exec_input, int preserve_crlf)
+{
+    struct tok_state *tok = _PyTokenizer_tok_new();
+    char *decoded;
+
+    if (tok == NULL)
+        return NULL;
+    decoded = decode_str(str, exec_input, tok, preserve_crlf);
+    if (decoded == NULL) {
+        _PyTokenizer_Free(tok);
+        return NULL;
+    }
+
+    tok->buf = tok->cur = tok->inp = decoded;
+    tok->end = decoded;
+    tok->underflow = &tok_underflow_string;
+    return tok;
+}
diff --git a/Parser/tokenizer/tokenizer.h b/Parser/tokenizer/tokenizer.h
new file mode 100644
index 00000000000000..8fbeb2d6ae6df1
--- /dev/null
+++ b/Parser/tokenizer/tokenizer.h
@@ -0,0 +1,14 @@
+#ifndef Py_TOKENIZER_H
+#define Py_TOKENIZER_H
+
+#include "Python.h"
+
+struct tok_state *_PyTokenizer_FromString(const char *, int, int);
+struct tok_state *_PyTokenizer_FromUTF8(const char *, int, int);
+struct tok_state *_PyTokenizer_FromReadline(PyObject*, const char*, int, int);
+struct tok_state *_PyTokenizer_FromFile(FILE *, const char*,
+                                              const char *, const char *);
+
+#define tok_dump _Py_tok_dump
+
+#endif /* !Py_TOKENIZER_H */
diff --git a/Parser/tokenizer/utf8_tokenizer.c b/Parser/tokenizer/utf8_tokenizer.c
new file mode 100644
index 00000000000000..1a925f445400fa
--- /dev/null
+++ b/Parser/tokenizer/utf8_tokenizer.c
@@ -0,0 +1,55 @@
+#include "Python.h"
+#include "errcode.h"
+
+#include "helpers.h"
+#include "../lexer/state.h"
+
+static int
+tok_underflow_string(struct tok_state *tok) {
+    char *end = strchr(tok->inp, '\n');
+    if (end != NULL) {
+        end++;
+    }
+    else {
+        end = strchr(tok->inp, '\0');
+        if (end == tok->inp) {
+            tok->done = E_EOF;
+            return 0;
+        }
+    }
+    if (tok->start == NULL) {
+        tok->buf = tok->cur;
+    }
+    tok->line_start = tok->cur;
+    ADVANCE_LINENO();
+    tok->inp = end;
+    return 1;
+}
+
+/* Set up tokenizer for UTF-8 string */
+struct tok_state *
+_PyTokenizer_FromUTF8(const char *str, int exec_input, int preserve_crlf)
+{
+    struct tok_state *tok = _PyTokenizer_tok_new();
+    char *translated;
+    if (tok == NULL)
+        return NULL;
+    tok->input = translated = _PyTokenizer_translate_newlines(str, exec_input, preserve_crlf, tok);
+    if (translated == NULL) {
+        _PyTokenizer_Free(tok);
+        return NULL;
+    }
+    tok->decoding_state = STATE_NORMAL;
+    tok->enc = NULL;
+    tok->str = translated;
+    tok->encoding = _PyTokenizer_new_string("utf-8", 5, tok);
+    if (!tok->encoding) {
+        _PyTokenizer_Free(tok);
+        return NULL;
+    }
+
+    tok->buf = tok->cur = tok->inp = translated;
+    tok->end = translated;
+    tok->underflow = &tok_underflow_string;
+    return tok;
+}
diff --git a/Programs/_bootstrap_python.c b/Programs/_bootstrap_python.c
index 6c388fc7033dd0..34f79191b4e8d7 100644
--- a/Programs/_bootstrap_python.c
+++ b/Programs/_bootstrap_python.c
@@ -15,8 +15,6 @@
 #include "Python/frozen_modules/zipimport.h"
 /* End includes */
 
-uint32_t _Py_next_func_version = 1;
-
 /* Empty initializer for deepfrozen modules */
 int _Py_Deepfreeze_Init(void)
 {
diff --git a/Programs/_freeze_module.c b/Programs/_freeze_module.c
index e55f1d56745c4d..3de6c6816c1e61 100644
--- a/Programs/_freeze_module.c
+++ b/Programs/_freeze_module.c
@@ -19,11 +19,9 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #ifndef MS_WINDOWS
-#include <unistd.h>
+#  include <unistd.h>
 #endif
 
-uint32_t _Py_next_func_version = 1;
-
 /* Empty initializer for deepfrozen modules */
 int _Py_Deepfreeze_Init(void)
 {
diff --git a/Programs/_testembed.c b/Programs/_testembed.c
index f78ba41fe7b4eb..1f9aa4b3d449a1 100644
--- a/Programs/_testembed.c
+++ b/Programs/_testembed.c
@@ -14,6 +14,15 @@
 #include <stdlib.h>               // putenv()
 #include <wchar.h>
 
+// These functions were removed from Python 3.13 API but are still exported
+// for the stable ABI. We want to test them in this program.
+extern void Py_SetProgramName(const wchar_t *program_name);
+extern void PySys_AddWarnOption(const wchar_t *s);
+extern void PySys_AddXOption(const wchar_t *s);
+extern void Py_SetPath(const wchar_t *path);
+extern void Py_SetPythonHome(const wchar_t *home);
+
+
 int main_argc;
 char **main_argv;
 
@@ -204,23 +213,39 @@ static int test_repeated_simple_init(void)
  * Test forcing a particular IO encoding
  *****************************************************/
 
-static void check_stdio_details(const char *encoding, const char * errors)
+static void check_stdio_details(const wchar_t *encoding, const wchar_t *errors)
 {
     /* Output info for the test case to check */
     if (encoding) {
-        printf("Expected encoding: %s\n", encoding);
+        printf("Expected encoding: %ls\n", encoding);
     } else {
         printf("Expected encoding: default\n");
     }
     if (errors) {
-        printf("Expected errors: %s\n", errors);
+        printf("Expected errors: %ls\n", errors);
     } else {
         printf("Expected errors: default\n");
     }
     fflush(stdout);
+
+    PyConfig config;
+    _PyConfig_InitCompatConfig(&config);
     /* Force the given IO encoding */
-    Py_SetStandardStreamEncoding(encoding, errors);
-    _testembed_Py_InitializeFromConfig();
+    if (encoding) {
+        config_set_string(&config, &config.stdio_encoding, encoding);
+    }
+    if (errors) {
+        config_set_string(&config, &config.stdio_errors, errors);
+    }
+#ifdef MS_WINDOWS
+    // gh-106659: On Windows, don't use _io._WindowsConsoleIO which always
+    // announce UTF-8 for sys.stdin.encoding.
+    config.legacy_windows_stdio = 1;
+#endif
+    config_set_program_name(&config);
+    init_from_config_clear(&config);
+
+
     PyRun_SimpleString(
         "import sys;"
         "print('stdin: {0.encoding}:{0.errors}'.format(sys.stdin));"
@@ -237,19 +262,11 @@ static int test_forced_io_encoding(void)
     printf("--- Use defaults ---\n");
     check_stdio_details(NULL, NULL);
     printf("--- Set errors only ---\n");
-    check_stdio_details(NULL, "ignore");
+    check_stdio_details(NULL, L"ignore");
     printf("--- Set encoding only ---\n");
-    check_stdio_details("iso8859-1", NULL);
+    check_stdio_details(L"iso8859-1", NULL);
     printf("--- Set encoding and errors ---\n");
-    check_stdio_details("iso8859-1", "replace");
-
-    /* Check calling after initialization fails */
-    Py_Initialize();
-
-    if (Py_SetStandardStreamEncoding(NULL, NULL) == 0) {
-        printf("Unexpected success calling Py_SetStandardStreamEncoding");
-    }
-    Py_Finalize();
+    check_stdio_details(L"iso8859-1", L"replace");
     return 0;
 }
 
@@ -639,11 +656,7 @@ static int test_init_from_config(void)
     /* FIXME: test path config: module_search_path .. dll_path */
 
     putenv("PYTHONPLATLIBDIR=env_platlibdir");
-    status = PyConfig_SetBytesString(&config, &config.platlibdir, "my_platlibdir");
-    if (PyStatus_Exception(status)) {
-        PyConfig_Clear(&config);
-        Py_ExitStatusException(status);
-    }
+    config_set_string(&config, &config.platlibdir, L"my_platlibdir");
 
     putenv("PYTHONVERBOSE=0");
     Py_VerboseFlag = 0;
@@ -682,12 +695,6 @@ static int test_init_from_config(void)
     config.buffered_stdio = 0;
 
     putenv("PYTHONIOENCODING=cp424");
-    Py_SetStandardStreamEncoding("ascii", "ignore");
-#ifdef MS_WINDOWS
-    /* Py_SetStandardStreamEncoding() sets Py_LegacyWindowsStdioFlag to 1.
-       Force it to 0 through the config. */
-    config.legacy_windows_stdio = 0;
-#endif
     config_set_string(&config, &config.stdio_encoding, L"iso8859-1");
     config_set_string(&config, &config.stdio_errors, L"replace");
 
@@ -701,9 +708,14 @@ static int test_init_from_config(void)
     config.pathconfig_warnings = 0;
 
     config.safe_path = 1;
+#ifdef Py_STATS
+    putenv("PYTHONSTATS=");
+    config._pystats = 1;
+#endif
 
     putenv("PYTHONINTMAXSTRDIGITS=6666");
     config.int_max_str_digits = 31337;
+    config.cpu_count = 4321;
 
     init_from_config_clear(&config);
 
@@ -771,6 +783,9 @@ static void set_most_env_vars(void)
     putenv("PYTHONPLATLIBDIR=env_platlibdir");
     putenv("PYTHONSAFEPATH=1");
     putenv("PYTHONINTMAXSTRDIGITS=4567");
+#ifdef Py_STATS
+    putenv("PYTHONSTATS=1");
+#endif
 }
 
 
@@ -1264,11 +1279,16 @@ static int _test_audit(Py_ssize_t setValue)
         printf("Set event failed");
         return 4;
     }
+    if (PyErr_Occurred()) {
+        printf("Exception raised");
+        return 5;
+    }
 
     if (sawSet != 42) {
         printf("Failed to see *userData change\n");
-        return 5;
+        return 6;
     }
+
     return 0;
 }
 
@@ -1282,6 +1302,57 @@ static int test_audit(void)
     return result;
 }
 
+static int test_audit_tuple(void)
+{
+#define ASSERT(TEST, EXITCODE) \
+    if (!(TEST)) { \
+        printf("ERROR test failed at %s:%i\n", __FILE__, __LINE__); \
+        return (EXITCODE); \
+    }
+
+    Py_ssize_t sawSet = 0;
+
+    // we need at least one hook, otherwise code checking for
+    // PySys_AuditTuple() is skipped.
+    PySys_AddAuditHook(_audit_hook, &sawSet);
+    _testembed_Py_InitializeFromConfig();
+
+    ASSERT(!PyErr_Occurred(), 0);
+
+    // pass Python tuple object
+    PyObject *tuple = Py_BuildValue("(i)", 444);
+    if (tuple == NULL) {
+        goto error;
+    }
+    ASSERT(PySys_AuditTuple("_testembed.set", tuple) == 0, 10);
+    ASSERT(!PyErr_Occurred(), 11);
+    ASSERT(sawSet == 444, 12);
+    Py_DECREF(tuple);
+
+    // pass Python int object
+    PyObject *int_arg = PyLong_FromLong(555);
+    if (int_arg == NULL) {
+        goto error;
+    }
+    ASSERT(PySys_AuditTuple("_testembed.set", int_arg) == -1, 20);
+    ASSERT(PyErr_ExceptionMatches(PyExc_TypeError), 21);
+    PyErr_Clear();
+    Py_DECREF(int_arg);
+
+    // NULL is accepted and means "no arguments"
+    ASSERT(PySys_AuditTuple("_testembed.test_audit_tuple", NULL) == 0, 30);
+    ASSERT(!PyErr_Occurred(), 31);
+
+    Py_Finalize();
+    return 0;
+
+error:
+    PyErr_Print();
+    return 1;
+
+#undef ASSERT
+}
+
 static volatile int _audit_subinterpreter_interpreter_count = 0;
 
 static int _audit_subinterpreter_hook(const char *event, PyObject *args, void *userdata)
@@ -1410,11 +1481,7 @@ static int test_init_read_set(void)
     PyConfig config;
     PyConfig_InitPythonConfig(&config);
 
-    status = PyConfig_SetBytesString(&config, &config.program_name,
-                                     "./init_read_set");
-    if (PyStatus_Exception(status)) {
-        goto fail;
-    }
+    config_set_string(&config, &config.program_name, L"./init_read_set");
 
     status = PyConfig_Read(&config);
     if (PyStatus_Exception(status)) {
@@ -2130,6 +2197,7 @@ static struct TestCase TestCases[] = {
     // Audit
     {"test_open_code_hook", test_open_code_hook},
     {"test_audit", test_audit},
+    {"test_audit_tuple", test_audit_tuple},
     {"test_audit_subinterpreter", test_audit_subinterpreter},
     {"test_audit_run_command", test_audit_run_command},
     {"test_audit_run_file", test_audit_run_file},
diff --git a/Programs/test_frozenmain.h b/Programs/test_frozenmain.h
index cd9d1032629f49..4fb78cf632d70e 100644
--- a/Programs/test_frozenmain.h
+++ b/Programs/test_frozenmain.h
@@ -1,38 +1,38 @@
 // Auto-generated by Programs/freeze_test_frozenmain.py
 unsigned char M_test_frozenmain[] = {
     227,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,
-    0,0,0,0,0,243,162,0,0,0,151,0,100,0,100,1,
-    108,0,90,0,100,0,100,1,108,1,90,1,2,0,101,2,
-    100,2,171,1,0,0,0,0,0,0,1,0,2,0,101,2,
-    100,3,101,0,106,6,0,0,0,0,0,0,0,0,0,0,
-    0,0,0,0,0,0,0,0,171,2,0,0,0,0,0,0,
-    1,0,2,0,101,1,106,8,0,0,0,0,0,0,0,0,
-    0,0,0,0,0,0,0,0,0,0,171,0,0,0,0,0,
-    0,0,100,4,25,0,0,0,90,5,100,5,68,0,93,19,
-    0,0,90,6,2,0,101,2,100,6,101,6,155,0,100,7,
-    101,5,101,6,25,0,0,0,155,0,157,4,171,1,0,0,
-    0,0,0,0,1,0,140,21,4,0,121,1,41,8,233,0,
-    0,0,0,78,122,18,70,114,111,122,101,110,32,72,101,108,
-    108,111,32,87,111,114,108,100,122,8,115,121,115,46,97,114,
-    103,118,218,6,99,111,110,102,105,103,41,5,218,12,112,114,
-    111,103,114,97,109,95,110,97,109,101,218,10,101,120,101,99,
-    117,116,97,98,108,101,218,15,117,115,101,95,101,110,118,105,
-    114,111,110,109,101,110,116,218,17,99,111,110,102,105,103,117,
-    114,101,95,99,95,115,116,100,105,111,218,14,98,117,102,102,
-    101,114,101,100,95,115,116,100,105,111,122,7,99,111,110,102,
-    105,103,32,122,2,58,32,41,7,218,3,115,121,115,218,17,
-    95,116,101,115,116,105,110,116,101,114,110,97,108,99,97,112,
-    105,218,5,112,114,105,110,116,218,4,97,114,103,118,218,11,
-    103,101,116,95,99,111,110,102,105,103,115,114,3,0,0,0,
-    218,3,107,101,121,169,0,243,0,0,0,0,250,18,116,101,
-    115,116,95,102,114,111,122,101,110,109,97,105,110,46,112,121,
-    250,8,60,109,111,100,117,108,101,62,114,18,0,0,0,1,
-    0,0,0,115,102,0,0,0,240,3,1,1,1,243,8,0,
-    1,11,219,0,24,225,0,5,208,6,26,212,0,27,217,0,
-    5,128,106,144,35,151,40,145,40,212,0,27,216,9,38,208,
-    9,26,215,9,38,209,9,38,211,9,40,168,24,209,9,50,
-    128,6,240,2,6,12,2,242,0,7,1,42,128,67,241,14,
-    0,5,10,136,71,144,67,144,53,152,2,152,54,160,35,153,
-    59,152,45,208,10,40,213,4,41,241,15,7,1,42,114,16,
-    0,0,0,
+    0,0,0,0,0,243,164,0,0,0,149,0,83,0,83,1,
+    75,0,114,0,83,0,83,1,75,1,114,1,92,2,34,0,
+    83,2,53,1,0,0,0,0,0,0,32,0,92,2,34,0,
+    83,3,92,0,82,6,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,53,2,0,0,0,0,0,0,
+    32,0,92,1,82,8,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,34,0,53,0,0,0,0,0,
+    0,0,83,4,5,0,0,0,114,5,83,5,19,0,72,20,
+    0,0,114,6,92,2,34,0,83,6,92,6,14,0,83,7,
+    92,5,92,6,5,0,0,0,14,0,51,4,53,1,0,0,
+    0,0,0,0,32,0,77,22,0,0,11,0,103,1,41,8,
+    233,0,0,0,0,78,122,18,70,114,111,122,101,110,32,72,
+    101,108,108,111,32,87,111,114,108,100,122,8,115,121,115,46,
+    97,114,103,118,218,6,99,111,110,102,105,103,41,5,218,12,
+    112,114,111,103,114,97,109,95,110,97,109,101,218,10,101,120,
+    101,99,117,116,97,98,108,101,218,15,117,115,101,95,101,110,
+    118,105,114,111,110,109,101,110,116,218,17,99,111,110,102,105,
+    103,117,114,101,95,99,95,115,116,100,105,111,218,14,98,117,
+    102,102,101,114,101,100,95,115,116,100,105,111,122,7,99,111,
+    110,102,105,103,32,122,2,58,32,41,7,218,3,115,121,115,
+    218,17,95,116,101,115,116,105,110,116,101,114,110,97,108,99,
+    97,112,105,218,5,112,114,105,110,116,218,4,97,114,103,118,
+    218,11,103,101,116,95,99,111,110,102,105,103,115,114,3,0,
+    0,0,218,3,107,101,121,169,0,243,0,0,0,0,250,18,
+    116,101,115,116,95,102,114,111,122,101,110,109,97,105,110,46,
+    112,121,250,8,60,109,111,100,117,108,101,62,114,18,0,0,
+    0,1,0,0,0,115,99,0,0,0,240,3,1,1,1,243,
+    8,0,1,11,219,0,24,225,0,5,208,6,26,212,0,27,
+    217,0,5,128,106,144,35,151,40,145,40,212,0,27,216,9,
+    26,215,9,38,210,9,38,211,9,40,168,24,209,9,50,128,
+    6,240,2,6,12,2,242,0,7,1,42,128,67,241,14,0,
+    5,10,136,71,144,67,144,53,152,2,152,54,160,35,153,59,
+    152,45,208,10,40,214,4,41,241,15,7,1,42,114,16,0,
+    0,0,
 };
diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index 81ab71c0fc3b29..75dc3e156aa945 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -4,9 +4,9 @@
 #include "pycore_ast.h"
 #include "pycore_ast_state.h"     // struct ast_state
 #include "pycore_ceval.h"         // _Py_EnterRecursiveCall
+#include "pycore_lock.h"          // _PyOnceFlag
 #include "pycore_interp.h"        // _PyInterpreterState.ast
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
-#include "structmember.h"
 #include <stddef.h>
 
 // Forward declaration
@@ -17,7 +17,8 @@ get_ast_state(void)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
     struct ast_state *state = &interp->ast;
-    if (!init_types(state)) {
+    assert(!state->finalized);
+    if (_PyOnceFlag_CallOnce(&state->once, (_Py_once_fn_t *)&init_types, state) < 0) {
         return NULL;
     }
     return state;
@@ -131,6 +132,7 @@ void _PyAST_Fini(PyInterpreterState *interp)
     Py_CLEAR(state->Not_type);
     Py_CLEAR(state->Or_singleton);
     Py_CLEAR(state->Or_type);
+    Py_CLEAR(state->ParamSpec_type);
     Py_CLEAR(state->Pass_type);
     Py_CLEAR(state->Pow_singleton);
     Py_CLEAR(state->Pow_type);
@@ -150,7 +152,10 @@ void _PyAST_Fini(PyInterpreterState *interp)
     Py_CLEAR(state->TryStar_type);
     Py_CLEAR(state->Try_type);
     Py_CLEAR(state->Tuple_type);
+    Py_CLEAR(state->TypeAlias_type);
     Py_CLEAR(state->TypeIgnore_type);
+    Py_CLEAR(state->TypeVarTuple_type);
+    Py_CLEAR(state->TypeVar_type);
     Py_CLEAR(state->UAdd_singleton);
     Py_CLEAR(state->UAdd_type);
     Py_CLEAR(state->USub_singleton);
@@ -179,6 +184,7 @@ void _PyAST_Fini(PyInterpreterState *interp)
     Py_CLEAR(state->bases);
     Py_CLEAR(state->body);
     Py_CLEAR(state->boolop_type);
+    Py_CLEAR(state->bound);
     Py_CLEAR(state->cases);
     Py_CLEAR(state->cause);
     Py_CLEAR(state->cls);
@@ -256,6 +262,8 @@ void _PyAST_Fini(PyInterpreterState *interp)
     Py_CLEAR(state->type_comment);
     Py_CLEAR(state->type_ignore_type);
     Py_CLEAR(state->type_ignores);
+    Py_CLEAR(state->type_param_type);
+    Py_CLEAR(state->type_params);
     Py_CLEAR(state->unaryop_type);
     Py_CLEAR(state->upper);
     Py_CLEAR(state->value);
@@ -265,100 +273,99 @@ void _PyAST_Fini(PyInterpreterState *interp)
 
     Py_CLEAR(_Py_INTERP_CACHED_OBJECT(interp, str_replace_inf));
 
-#if !defined(NDEBUG)
-    state->initialized = -1;
-#else
-    state->initialized = 0;
-#endif
+    state->finalized = 1;
+    state->once = (_PyOnceFlag){0};
 }
 
 static int init_identifiers(struct ast_state *state)
 {
-    if ((state->__dict__ = PyUnicode_InternFromString("__dict__")) == NULL) return 0;
-    if ((state->__doc__ = PyUnicode_InternFromString("__doc__")) == NULL) return 0;
-    if ((state->__match_args__ = PyUnicode_InternFromString("__match_args__")) == NULL) return 0;
-    if ((state->__module__ = PyUnicode_InternFromString("__module__")) == NULL) return 0;
-    if ((state->_attributes = PyUnicode_InternFromString("_attributes")) == NULL) return 0;
-    if ((state->_fields = PyUnicode_InternFromString("_fields")) == NULL) return 0;
-    if ((state->annotation = PyUnicode_InternFromString("annotation")) == NULL) return 0;
-    if ((state->arg = PyUnicode_InternFromString("arg")) == NULL) return 0;
-    if ((state->args = PyUnicode_InternFromString("args")) == NULL) return 0;
-    if ((state->argtypes = PyUnicode_InternFromString("argtypes")) == NULL) return 0;
-    if ((state->asname = PyUnicode_InternFromString("asname")) == NULL) return 0;
-    if ((state->ast = PyUnicode_InternFromString("ast")) == NULL) return 0;
-    if ((state->attr = PyUnicode_InternFromString("attr")) == NULL) return 0;
-    if ((state->bases = PyUnicode_InternFromString("bases")) == NULL) return 0;
-    if ((state->body = PyUnicode_InternFromString("body")) == NULL) return 0;
-    if ((state->cases = PyUnicode_InternFromString("cases")) == NULL) return 0;
-    if ((state->cause = PyUnicode_InternFromString("cause")) == NULL) return 0;
-    if ((state->cls = PyUnicode_InternFromString("cls")) == NULL) return 0;
-    if ((state->col_offset = PyUnicode_InternFromString("col_offset")) == NULL) return 0;
-    if ((state->comparators = PyUnicode_InternFromString("comparators")) == NULL) return 0;
-    if ((state->context_expr = PyUnicode_InternFromString("context_expr")) == NULL) return 0;
-    if ((state->conversion = PyUnicode_InternFromString("conversion")) == NULL) return 0;
-    if ((state->ctx = PyUnicode_InternFromString("ctx")) == NULL) return 0;
-    if ((state->decorator_list = PyUnicode_InternFromString("decorator_list")) == NULL) return 0;
-    if ((state->defaults = PyUnicode_InternFromString("defaults")) == NULL) return 0;
-    if ((state->elt = PyUnicode_InternFromString("elt")) == NULL) return 0;
-    if ((state->elts = PyUnicode_InternFromString("elts")) == NULL) return 0;
-    if ((state->end_col_offset = PyUnicode_InternFromString("end_col_offset")) == NULL) return 0;
-    if ((state->end_lineno = PyUnicode_InternFromString("end_lineno")) == NULL) return 0;
-    if ((state->exc = PyUnicode_InternFromString("exc")) == NULL) return 0;
-    if ((state->finalbody = PyUnicode_InternFromString("finalbody")) == NULL) return 0;
-    if ((state->format_spec = PyUnicode_InternFromString("format_spec")) == NULL) return 0;
-    if ((state->func = PyUnicode_InternFromString("func")) == NULL) return 0;
-    if ((state->generators = PyUnicode_InternFromString("generators")) == NULL) return 0;
-    if ((state->guard = PyUnicode_InternFromString("guard")) == NULL) return 0;
-    if ((state->handlers = PyUnicode_InternFromString("handlers")) == NULL) return 0;
-    if ((state->id = PyUnicode_InternFromString("id")) == NULL) return 0;
-    if ((state->ifs = PyUnicode_InternFromString("ifs")) == NULL) return 0;
-    if ((state->is_async = PyUnicode_InternFromString("is_async")) == NULL) return 0;
-    if ((state->items = PyUnicode_InternFromString("items")) == NULL) return 0;
-    if ((state->iter = PyUnicode_InternFromString("iter")) == NULL) return 0;
-    if ((state->key = PyUnicode_InternFromString("key")) == NULL) return 0;
-    if ((state->keys = PyUnicode_InternFromString("keys")) == NULL) return 0;
-    if ((state->keywords = PyUnicode_InternFromString("keywords")) == NULL) return 0;
-    if ((state->kind = PyUnicode_InternFromString("kind")) == NULL) return 0;
-    if ((state->kw_defaults = PyUnicode_InternFromString("kw_defaults")) == NULL) return 0;
-    if ((state->kwarg = PyUnicode_InternFromString("kwarg")) == NULL) return 0;
-    if ((state->kwd_attrs = PyUnicode_InternFromString("kwd_attrs")) == NULL) return 0;
-    if ((state->kwd_patterns = PyUnicode_InternFromString("kwd_patterns")) == NULL) return 0;
-    if ((state->kwonlyargs = PyUnicode_InternFromString("kwonlyargs")) == NULL) return 0;
-    if ((state->left = PyUnicode_InternFromString("left")) == NULL) return 0;
-    if ((state->level = PyUnicode_InternFromString("level")) == NULL) return 0;
-    if ((state->lineno = PyUnicode_InternFromString("lineno")) == NULL) return 0;
-    if ((state->lower = PyUnicode_InternFromString("lower")) == NULL) return 0;
-    if ((state->module = PyUnicode_InternFromString("module")) == NULL) return 0;
-    if ((state->msg = PyUnicode_InternFromString("msg")) == NULL) return 0;
-    if ((state->name = PyUnicode_InternFromString("name")) == NULL) return 0;
-    if ((state->names = PyUnicode_InternFromString("names")) == NULL) return 0;
-    if ((state->op = PyUnicode_InternFromString("op")) == NULL) return 0;
-    if ((state->operand = PyUnicode_InternFromString("operand")) == NULL) return 0;
-    if ((state->ops = PyUnicode_InternFromString("ops")) == NULL) return 0;
-    if ((state->optional_vars = PyUnicode_InternFromString("optional_vars")) == NULL) return 0;
-    if ((state->orelse = PyUnicode_InternFromString("orelse")) == NULL) return 0;
-    if ((state->pattern = PyUnicode_InternFromString("pattern")) == NULL) return 0;
-    if ((state->patterns = PyUnicode_InternFromString("patterns")) == NULL) return 0;
-    if ((state->posonlyargs = PyUnicode_InternFromString("posonlyargs")) == NULL) return 0;
-    if ((state->rest = PyUnicode_InternFromString("rest")) == NULL) return 0;
-    if ((state->returns = PyUnicode_InternFromString("returns")) == NULL) return 0;
-    if ((state->right = PyUnicode_InternFromString("right")) == NULL) return 0;
-    if ((state->simple = PyUnicode_InternFromString("simple")) == NULL) return 0;
-    if ((state->slice = PyUnicode_InternFromString("slice")) == NULL) return 0;
-    if ((state->step = PyUnicode_InternFromString("step")) == NULL) return 0;
-    if ((state->subject = PyUnicode_InternFromString("subject")) == NULL) return 0;
-    if ((state->tag = PyUnicode_InternFromString("tag")) == NULL) return 0;
-    if ((state->target = PyUnicode_InternFromString("target")) == NULL) return 0;
-    if ((state->targets = PyUnicode_InternFromString("targets")) == NULL) return 0;
-    if ((state->test = PyUnicode_InternFromString("test")) == NULL) return 0;
-    if ((state->type = PyUnicode_InternFromString("type")) == NULL) return 0;
-    if ((state->type_comment = PyUnicode_InternFromString("type_comment")) == NULL) return 0;
-    if ((state->type_ignores = PyUnicode_InternFromString("type_ignores")) == NULL) return 0;
-    if ((state->upper = PyUnicode_InternFromString("upper")) == NULL) return 0;
-    if ((state->value = PyUnicode_InternFromString("value")) == NULL) return 0;
-    if ((state->values = PyUnicode_InternFromString("values")) == NULL) return 0;
-    if ((state->vararg = PyUnicode_InternFromString("vararg")) == NULL) return 0;
-    return 1;
+    if ((state->__dict__ = PyUnicode_InternFromString("__dict__")) == NULL) return -1;
+    if ((state->__doc__ = PyUnicode_InternFromString("__doc__")) == NULL) return -1;
+    if ((state->__match_args__ = PyUnicode_InternFromString("__match_args__")) == NULL) return -1;
+    if ((state->__module__ = PyUnicode_InternFromString("__module__")) == NULL) return -1;
+    if ((state->_attributes = PyUnicode_InternFromString("_attributes")) == NULL) return -1;
+    if ((state->_fields = PyUnicode_InternFromString("_fields")) == NULL) return -1;
+    if ((state->annotation = PyUnicode_InternFromString("annotation")) == NULL) return -1;
+    if ((state->arg = PyUnicode_InternFromString("arg")) == NULL) return -1;
+    if ((state->args = PyUnicode_InternFromString("args")) == NULL) return -1;
+    if ((state->argtypes = PyUnicode_InternFromString("argtypes")) == NULL) return -1;
+    if ((state->asname = PyUnicode_InternFromString("asname")) == NULL) return -1;
+    if ((state->ast = PyUnicode_InternFromString("ast")) == NULL) return -1;
+    if ((state->attr = PyUnicode_InternFromString("attr")) == NULL) return -1;
+    if ((state->bases = PyUnicode_InternFromString("bases")) == NULL) return -1;
+    if ((state->body = PyUnicode_InternFromString("body")) == NULL) return -1;
+    if ((state->bound = PyUnicode_InternFromString("bound")) == NULL) return -1;
+    if ((state->cases = PyUnicode_InternFromString("cases")) == NULL) return -1;
+    if ((state->cause = PyUnicode_InternFromString("cause")) == NULL) return -1;
+    if ((state->cls = PyUnicode_InternFromString("cls")) == NULL) return -1;
+    if ((state->col_offset = PyUnicode_InternFromString("col_offset")) == NULL) return -1;
+    if ((state->comparators = PyUnicode_InternFromString("comparators")) == NULL) return -1;
+    if ((state->context_expr = PyUnicode_InternFromString("context_expr")) == NULL) return -1;
+    if ((state->conversion = PyUnicode_InternFromString("conversion")) == NULL) return -1;
+    if ((state->ctx = PyUnicode_InternFromString("ctx")) == NULL) return -1;
+    if ((state->decorator_list = PyUnicode_InternFromString("decorator_list")) == NULL) return -1;
+    if ((state->defaults = PyUnicode_InternFromString("defaults")) == NULL) return -1;
+    if ((state->elt = PyUnicode_InternFromString("elt")) == NULL) return -1;
+    if ((state->elts = PyUnicode_InternFromString("elts")) == NULL) return -1;
+    if ((state->end_col_offset = PyUnicode_InternFromString("end_col_offset")) == NULL) return -1;
+    if ((state->end_lineno = PyUnicode_InternFromString("end_lineno")) == NULL) return -1;
+    if ((state->exc = PyUnicode_InternFromString("exc")) == NULL) return -1;
+    if ((state->finalbody = PyUnicode_InternFromString("finalbody")) == NULL) return -1;
+    if ((state->format_spec = PyUnicode_InternFromString("format_spec")) == NULL) return -1;
+    if ((state->func = PyUnicode_InternFromString("func")) == NULL) return -1;
+    if ((state->generators = PyUnicode_InternFromString("generators")) == NULL) return -1;
+    if ((state->guard = PyUnicode_InternFromString("guard")) == NULL) return -1;
+    if ((state->handlers = PyUnicode_InternFromString("handlers")) == NULL) return -1;
+    if ((state->id = PyUnicode_InternFromString("id")) == NULL) return -1;
+    if ((state->ifs = PyUnicode_InternFromString("ifs")) == NULL) return -1;
+    if ((state->is_async = PyUnicode_InternFromString("is_async")) == NULL) return -1;
+    if ((state->items = PyUnicode_InternFromString("items")) == NULL) return -1;
+    if ((state->iter = PyUnicode_InternFromString("iter")) == NULL) return -1;
+    if ((state->key = PyUnicode_InternFromString("key")) == NULL) return -1;
+    if ((state->keys = PyUnicode_InternFromString("keys")) == NULL) return -1;
+    if ((state->keywords = PyUnicode_InternFromString("keywords")) == NULL) return -1;
+    if ((state->kind = PyUnicode_InternFromString("kind")) == NULL) return -1;
+    if ((state->kw_defaults = PyUnicode_InternFromString("kw_defaults")) == NULL) return -1;
+    if ((state->kwarg = PyUnicode_InternFromString("kwarg")) == NULL) return -1;
+    if ((state->kwd_attrs = PyUnicode_InternFromString("kwd_attrs")) == NULL) return -1;
+    if ((state->kwd_patterns = PyUnicode_InternFromString("kwd_patterns")) == NULL) return -1;
+    if ((state->kwonlyargs = PyUnicode_InternFromString("kwonlyargs")) == NULL) return -1;
+    if ((state->left = PyUnicode_InternFromString("left")) == NULL) return -1;
+    if ((state->level = PyUnicode_InternFromString("level")) == NULL) return -1;
+    if ((state->lineno = PyUnicode_InternFromString("lineno")) == NULL) return -1;
+    if ((state->lower = PyUnicode_InternFromString("lower")) == NULL) return -1;
+    if ((state->module = PyUnicode_InternFromString("module")) == NULL) return -1;
+    if ((state->msg = PyUnicode_InternFromString("msg")) == NULL) return -1;
+    if ((state->name = PyUnicode_InternFromString("name")) == NULL) return -1;
+    if ((state->names = PyUnicode_InternFromString("names")) == NULL) return -1;
+    if ((state->op = PyUnicode_InternFromString("op")) == NULL) return -1;
+    if ((state->operand = PyUnicode_InternFromString("operand")) == NULL) return -1;
+    if ((state->ops = PyUnicode_InternFromString("ops")) == NULL) return -1;
+    if ((state->optional_vars = PyUnicode_InternFromString("optional_vars")) == NULL) return -1;
+    if ((state->orelse = PyUnicode_InternFromString("orelse")) == NULL) return -1;
+    if ((state->pattern = PyUnicode_InternFromString("pattern")) == NULL) return -1;
+    if ((state->patterns = PyUnicode_InternFromString("patterns")) == NULL) return -1;
+    if ((state->posonlyargs = PyUnicode_InternFromString("posonlyargs")) == NULL) return -1;
+    if ((state->rest = PyUnicode_InternFromString("rest")) == NULL) return -1;
+    if ((state->returns = PyUnicode_InternFromString("returns")) == NULL) return -1;
+    if ((state->right = PyUnicode_InternFromString("right")) == NULL) return -1;
+    if ((state->simple = PyUnicode_InternFromString("simple")) == NULL) return -1;
+    if ((state->slice = PyUnicode_InternFromString("slice")) == NULL) return -1;
+    if ((state->step = PyUnicode_InternFromString("step")) == NULL) return -1;
+    if ((state->subject = PyUnicode_InternFromString("subject")) == NULL) return -1;
+    if ((state->tag = PyUnicode_InternFromString("tag")) == NULL) return -1;
+    if ((state->target = PyUnicode_InternFromString("target")) == NULL) return -1;
+    if ((state->targets = PyUnicode_InternFromString("targets")) == NULL) return -1;
+    if ((state->test = PyUnicode_InternFromString("test")) == NULL) return -1;
+    if ((state->type = PyUnicode_InternFromString("type")) == NULL) return -1;
+    if ((state->type_comment = PyUnicode_InternFromString("type_comment")) == NULL) return -1;
+    if ((state->type_ignores = PyUnicode_InternFromString("type_ignores")) == NULL) return -1;
+    if ((state->type_params = PyUnicode_InternFromString("type_params")) == NULL) return -1;
+    if ((state->upper = PyUnicode_InternFromString("upper")) == NULL) return -1;
+    if ((state->value = PyUnicode_InternFromString("value")) == NULL) return -1;
+    if ((state->values = PyUnicode_InternFromString("values")) == NULL) return -1;
+    if ((state->vararg = PyUnicode_InternFromString("vararg")) == NULL) return -1;
+    return 0;
 };
 
 GENERATE_ASDL_SEQ_CONSTRUCTOR(mod, mod_ty)
@@ -374,6 +381,7 @@ GENERATE_ASDL_SEQ_CONSTRUCTOR(withitem, withitem_ty)
 GENERATE_ASDL_SEQ_CONSTRUCTOR(match_case, match_case_ty)
 GENERATE_ASDL_SEQ_CONSTRUCTOR(pattern, pattern_ty)
 GENERATE_ASDL_SEQ_CONSTRUCTOR(type_ignore, type_ignore_ty)
+GENERATE_ASDL_SEQ_CONSTRUCTOR(type_param, type_param_ty)
 
 static PyObject* ast2obj_mod(struct ast_state *state, void*);
 static const char * const Module_fields[]={
@@ -404,6 +412,7 @@ static const char * const FunctionDef_fields[]={
     "decorator_list",
     "returns",
     "type_comment",
+    "type_params",
 };
 static const char * const AsyncFunctionDef_fields[]={
     "name",
@@ -412,6 +421,7 @@ static const char * const AsyncFunctionDef_fields[]={
     "decorator_list",
     "returns",
     "type_comment",
+    "type_params",
 };
 static const char * const ClassDef_fields[]={
     "name",
@@ -419,6 +429,7 @@ static const char * const ClassDef_fields[]={
     "keywords",
     "body",
     "decorator_list",
+    "type_params",
 };
 static const char * const Return_fields[]={
     "value",
@@ -431,6 +442,11 @@ static const char * const Assign_fields[]={
     "value",
     "type_comment",
 };
+static const char * const TypeAlias_fields[]={
+    "name",
+    "type_params",
+    "value",
+};
 static const char * const AugAssign_fields[]={
     "target",
     "op",
@@ -757,6 +773,23 @@ static const char * const TypeIgnore_fields[]={
     "lineno",
     "tag",
 };
+static const char * const type_param_attributes[] = {
+    "lineno",
+    "col_offset",
+    "end_lineno",
+    "end_col_offset",
+};
+static PyObject* ast2obj_type_param(struct ast_state *state, void*);
+static const char * const TypeVar_fields[]={
+    "name",
+    "bound",
+};
+static const char * const ParamSpec_fields[]={
+    "name",
+};
+static const char * const TypeVarTuple_fields[]={
+    "name",
+};
 
 
 
@@ -804,7 +837,7 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
     Py_ssize_t i, numfields = 0;
     int res = -1;
     PyObject *key, *value, *fields;
-    if (_PyObject_LookupAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
+    if (PyObject_GetOptionalAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
         goto cleanup;
     }
     if (fields) {
@@ -878,7 +911,7 @@ ast_type_reduce(PyObject *self, PyObject *unused)
     }
 
     PyObject *dict;
-    if (_PyObject_LookupAttr(self, state->__dict__, &dict) < 0) {
+    if (PyObject_GetOptionalAttr(self, state->__dict__, &dict) < 0) {
         return NULL;
     }
     if (dict) {
@@ -888,7 +921,7 @@ ast_type_reduce(PyObject *self, PyObject *unused)
 }
 
 static PyMemberDef ast_type_members[] = {
-    {"__dictoffset__", T_PYSSIZET, offsetof(AST_object, dict), READONLY},
+    {"__dictoffset__", Py_T_PYSSIZET, offsetof(AST_object, dict), Py_READONLY},
     {NULL}  /* Sentinel */
 };
 
@@ -959,16 +992,16 @@ add_attributes(struct ast_state *state, PyObject *type, const char * const *attr
     int i, result;
     PyObject *s, *l = PyTuple_New(num_fields);
     if (!l)
-        return 0;
+        return -1;
     for (i = 0; i < num_fields; i++) {
         s = PyUnicode_InternFromString(attrs[i]);
         if (!s) {
             Py_DECREF(l);
-            return 0;
+            return -1;
         }
         PyTuple_SET_ITEM(l, i, s);
     }
-    result = PyObject_SetAttr(type, state->_attributes, l) >= 0;
+    result = PyObject_SetAttr(type, state->_attributes, l);
     Py_DECREF(l);
     return result;
 }
@@ -1043,7 +1076,7 @@ static int obj2ast_identifier(struct ast_state *state, PyObject* obj, PyObject**
 {
     if (!PyUnicode_CheckExact(obj) && obj != Py_None) {
         PyErr_SetString(PyExc_TypeError, "AST identifier must be of type str");
-        return 1;
+        return -1;
     }
     return obj2ast_object(state, obj, out, arena);
 }
@@ -1052,7 +1085,7 @@ static int obj2ast_string(struct ast_state *state, PyObject* obj, PyObject** out
 {
     if (!PyUnicode_CheckExact(obj) && !PyBytes_CheckExact(obj)) {
         PyErr_SetString(PyExc_TypeError, "AST string must be of type str");
-        return 1;
+        return -1;
     }
     return obj2ast_object(state, obj, out, arena);
 }
@@ -1062,12 +1095,12 @@ static int obj2ast_int(struct ast_state* Py_UNUSED(state), PyObject* obj, int* o
     int i;
     if (!PyLong_Check(obj)) {
         PyErr_Format(PyExc_ValueError, "invalid integer value: %R", obj);
-        return 1;
+        return -1;
     }
 
-    i = _PyLong_AsInt(obj);
+    i = PyLong_AsInt(obj);
     if (i == -1 && PyErr_Occurred())
-        return 1;
+        return -1;
     *out = i;
     return 0;
 }
@@ -1092,54 +1125,48 @@ static int add_ast_fields(struct ast_state *state)
 static int
 init_types(struct ast_state *state)
 {
-    // init_types() must not be called after _PyAST_Fini()
-    // has been called
-    assert(state->initialized >= 0);
-
-    if (state->initialized) {
-        return 1;
-    }
     if (init_identifiers(state) < 0) {
-        return 0;
+        return -1;
     }
     state->AST_type = PyType_FromSpec(&AST_type_spec);
     if (!state->AST_type) {
-        return 0;
+        return -1;
     }
     if (add_ast_fields(state) < 0) {
-        return 0;
+        return -1;
     }
     state->mod_type = make_type(state, "mod", state->AST_type, NULL, 0,
         "mod = Module(stmt* body, type_ignore* type_ignores)\n"
         "    | Interactive(stmt* body)\n"
         "    | Expression(expr body)\n"
         "    | FunctionType(expr* argtypes, expr returns)");
-    if (!state->mod_type) return 0;
-    if (!add_attributes(state, state->mod_type, NULL, 0)) return 0;
+    if (!state->mod_type) return -1;
+    if (add_attributes(state, state->mod_type, NULL, 0) < 0) return -1;
     state->Module_type = make_type(state, "Module", state->mod_type,
                                    Module_fields, 2,
         "Module(stmt* body, type_ignore* type_ignores)");
-    if (!state->Module_type) return 0;
+    if (!state->Module_type) return -1;
     state->Interactive_type = make_type(state, "Interactive", state->mod_type,
                                         Interactive_fields, 1,
         "Interactive(stmt* body)");
-    if (!state->Interactive_type) return 0;
+    if (!state->Interactive_type) return -1;
     state->Expression_type = make_type(state, "Expression", state->mod_type,
                                        Expression_fields, 1,
         "Expression(expr body)");
-    if (!state->Expression_type) return 0;
+    if (!state->Expression_type) return -1;
     state->FunctionType_type = make_type(state, "FunctionType",
                                          state->mod_type, FunctionType_fields,
                                          2,
         "FunctionType(expr* argtypes, expr returns)");
-    if (!state->FunctionType_type) return 0;
+    if (!state->FunctionType_type) return -1;
     state->stmt_type = make_type(state, "stmt", state->AST_type, NULL, 0,
-        "stmt = FunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment)\n"
-        "     | AsyncFunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment)\n"
-        "     | ClassDef(identifier name, expr* bases, keyword* keywords, stmt* body, expr* decorator_list)\n"
+        "stmt = FunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment, type_param* type_params)\n"
+        "     | AsyncFunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment, type_param* type_params)\n"
+        "     | ClassDef(identifier name, expr* bases, keyword* keywords, stmt* body, expr* decorator_list, type_param* type_params)\n"
         "     | Return(expr? value)\n"
         "     | Delete(expr* targets)\n"
         "     | Assign(expr* targets, expr value, string? type_comment)\n"
+        "     | TypeAlias(expr name, type_param* type_params, expr value)\n"
         "     | AugAssign(expr target, operator op, expr value)\n"
         "     | AnnAssign(expr target, expr annotation, expr? value, int simple)\n"
         "     | For(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment)\n"
@@ -1161,156 +1188,161 @@ init_types(struct ast_state *state)
         "     | Pass\n"
         "     | Break\n"
         "     | Continue");
-    if (!state->stmt_type) return 0;
-    if (!add_attributes(state, state->stmt_type, stmt_attributes, 4)) return 0;
+    if (!state->stmt_type) return -1;
+    if (add_attributes(state, state->stmt_type, stmt_attributes, 4) < 0) return
+        -1;
     if (PyObject_SetAttr(state->stmt_type, state->end_lineno, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->stmt_type, state->end_col_offset, Py_None) ==
         -1)
-        return 0;
+        return -1;
     state->FunctionDef_type = make_type(state, "FunctionDef", state->stmt_type,
-                                        FunctionDef_fields, 6,
-        "FunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment)");
-    if (!state->FunctionDef_type) return 0;
+                                        FunctionDef_fields, 7,
+        "FunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment, type_param* type_params)");
+    if (!state->FunctionDef_type) return -1;
     if (PyObject_SetAttr(state->FunctionDef_type, state->returns, Py_None) ==
         -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->FunctionDef_type, state->type_comment, Py_None)
         == -1)
-        return 0;
+        return -1;
     state->AsyncFunctionDef_type = make_type(state, "AsyncFunctionDef",
                                              state->stmt_type,
-                                             AsyncFunctionDef_fields, 6,
-        "AsyncFunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment)");
-    if (!state->AsyncFunctionDef_type) return 0;
+                                             AsyncFunctionDef_fields, 7,
+        "AsyncFunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment, type_param* type_params)");
+    if (!state->AsyncFunctionDef_type) return -1;
     if (PyObject_SetAttr(state->AsyncFunctionDef_type, state->returns, Py_None)
         == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->AsyncFunctionDef_type, state->type_comment,
         Py_None) == -1)
-        return 0;
+        return -1;
     state->ClassDef_type = make_type(state, "ClassDef", state->stmt_type,
-                                     ClassDef_fields, 5,
-        "ClassDef(identifier name, expr* bases, keyword* keywords, stmt* body, expr* decorator_list)");
-    if (!state->ClassDef_type) return 0;
+                                     ClassDef_fields, 6,
+        "ClassDef(identifier name, expr* bases, keyword* keywords, stmt* body, expr* decorator_list, type_param* type_params)");
+    if (!state->ClassDef_type) return -1;
     state->Return_type = make_type(state, "Return", state->stmt_type,
                                    Return_fields, 1,
         "Return(expr? value)");
-    if (!state->Return_type) return 0;
+    if (!state->Return_type) return -1;
     if (PyObject_SetAttr(state->Return_type, state->value, Py_None) == -1)
-        return 0;
+        return -1;
     state->Delete_type = make_type(state, "Delete", state->stmt_type,
                                    Delete_fields, 1,
         "Delete(expr* targets)");
-    if (!state->Delete_type) return 0;
+    if (!state->Delete_type) return -1;
     state->Assign_type = make_type(state, "Assign", state->stmt_type,
                                    Assign_fields, 3,
         "Assign(expr* targets, expr value, string? type_comment)");
-    if (!state->Assign_type) return 0;
+    if (!state->Assign_type) return -1;
     if (PyObject_SetAttr(state->Assign_type, state->type_comment, Py_None) ==
         -1)
-        return 0;
+        return -1;
+    state->TypeAlias_type = make_type(state, "TypeAlias", state->stmt_type,
+                                      TypeAlias_fields, 3,
+        "TypeAlias(expr name, type_param* type_params, expr value)");
+    if (!state->TypeAlias_type) return -1;
     state->AugAssign_type = make_type(state, "AugAssign", state->stmt_type,
                                       AugAssign_fields, 3,
         "AugAssign(expr target, operator op, expr value)");
-    if (!state->AugAssign_type) return 0;
+    if (!state->AugAssign_type) return -1;
     state->AnnAssign_type = make_type(state, "AnnAssign", state->stmt_type,
                                       AnnAssign_fields, 4,
         "AnnAssign(expr target, expr annotation, expr? value, int simple)");
-    if (!state->AnnAssign_type) return 0;
+    if (!state->AnnAssign_type) return -1;
     if (PyObject_SetAttr(state->AnnAssign_type, state->value, Py_None) == -1)
-        return 0;
+        return -1;
     state->For_type = make_type(state, "For", state->stmt_type, For_fields, 5,
         "For(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment)");
-    if (!state->For_type) return 0;
+    if (!state->For_type) return -1;
     if (PyObject_SetAttr(state->For_type, state->type_comment, Py_None) == -1)
-        return 0;
+        return -1;
     state->AsyncFor_type = make_type(state, "AsyncFor", state->stmt_type,
                                      AsyncFor_fields, 5,
         "AsyncFor(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment)");
-    if (!state->AsyncFor_type) return 0;
+    if (!state->AsyncFor_type) return -1;
     if (PyObject_SetAttr(state->AsyncFor_type, state->type_comment, Py_None) ==
         -1)
-        return 0;
+        return -1;
     state->While_type = make_type(state, "While", state->stmt_type,
                                   While_fields, 3,
         "While(expr test, stmt* body, stmt* orelse)");
-    if (!state->While_type) return 0;
+    if (!state->While_type) return -1;
     state->If_type = make_type(state, "If", state->stmt_type, If_fields, 3,
         "If(expr test, stmt* body, stmt* orelse)");
-    if (!state->If_type) return 0;
+    if (!state->If_type) return -1;
     state->With_type = make_type(state, "With", state->stmt_type, With_fields,
                                  3,
         "With(withitem* items, stmt* body, string? type_comment)");
-    if (!state->With_type) return 0;
+    if (!state->With_type) return -1;
     if (PyObject_SetAttr(state->With_type, state->type_comment, Py_None) == -1)
-        return 0;
+        return -1;
     state->AsyncWith_type = make_type(state, "AsyncWith", state->stmt_type,
                                       AsyncWith_fields, 3,
         "AsyncWith(withitem* items, stmt* body, string? type_comment)");
-    if (!state->AsyncWith_type) return 0;
+    if (!state->AsyncWith_type) return -1;
     if (PyObject_SetAttr(state->AsyncWith_type, state->type_comment, Py_None)
         == -1)
-        return 0;
+        return -1;
     state->Match_type = make_type(state, "Match", state->stmt_type,
                                   Match_fields, 2,
         "Match(expr subject, match_case* cases)");
-    if (!state->Match_type) return 0;
+    if (!state->Match_type) return -1;
     state->Raise_type = make_type(state, "Raise", state->stmt_type,
                                   Raise_fields, 2,
         "Raise(expr? exc, expr? cause)");
-    if (!state->Raise_type) return 0;
+    if (!state->Raise_type) return -1;
     if (PyObject_SetAttr(state->Raise_type, state->exc, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->Raise_type, state->cause, Py_None) == -1)
-        return 0;
+        return -1;
     state->Try_type = make_type(state, "Try", state->stmt_type, Try_fields, 4,
         "Try(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)");
-    if (!state->Try_type) return 0;
+    if (!state->Try_type) return -1;
     state->TryStar_type = make_type(state, "TryStar", state->stmt_type,
                                     TryStar_fields, 4,
         "TryStar(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)");
-    if (!state->TryStar_type) return 0;
+    if (!state->TryStar_type) return -1;
     state->Assert_type = make_type(state, "Assert", state->stmt_type,
                                    Assert_fields, 2,
         "Assert(expr test, expr? msg)");
-    if (!state->Assert_type) return 0;
+    if (!state->Assert_type) return -1;
     if (PyObject_SetAttr(state->Assert_type, state->msg, Py_None) == -1)
-        return 0;
+        return -1;
     state->Import_type = make_type(state, "Import", state->stmt_type,
                                    Import_fields, 1,
         "Import(alias* names)");
-    if (!state->Import_type) return 0;
+    if (!state->Import_type) return -1;
     state->ImportFrom_type = make_type(state, "ImportFrom", state->stmt_type,
                                        ImportFrom_fields, 3,
         "ImportFrom(identifier? module, alias* names, int? level)");
-    if (!state->ImportFrom_type) return 0;
+    if (!state->ImportFrom_type) return -1;
     if (PyObject_SetAttr(state->ImportFrom_type, state->module, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->ImportFrom_type, state->level, Py_None) == -1)
-        return 0;
+        return -1;
     state->Global_type = make_type(state, "Global", state->stmt_type,
                                    Global_fields, 1,
         "Global(identifier* names)");
-    if (!state->Global_type) return 0;
+    if (!state->Global_type) return -1;
     state->Nonlocal_type = make_type(state, "Nonlocal", state->stmt_type,
                                      Nonlocal_fields, 1,
         "Nonlocal(identifier* names)");
-    if (!state->Nonlocal_type) return 0;
+    if (!state->Nonlocal_type) return -1;
     state->Expr_type = make_type(state, "Expr", state->stmt_type, Expr_fields,
                                  1,
         "Expr(expr value)");
-    if (!state->Expr_type) return 0;
+    if (!state->Expr_type) return -1;
     state->Pass_type = make_type(state, "Pass", state->stmt_type, NULL, 0,
         "Pass");
-    if (!state->Pass_type) return 0;
+    if (!state->Pass_type) return -1;
     state->Break_type = make_type(state, "Break", state->stmt_type, NULL, 0,
         "Break");
-    if (!state->Break_type) return 0;
+    if (!state->Break_type) return -1;
     state->Continue_type = make_type(state, "Continue", state->stmt_type, NULL,
                                      0,
         "Continue");
-    if (!state->Continue_type) return 0;
+    if (!state->Continue_type) return -1;
     state->expr_type = make_type(state, "expr", state->AST_type, NULL, 0,
         "expr = BoolOp(boolop op, expr* values)\n"
         "     | NamedExpr(expr target, expr value)\n"
@@ -1339,454 +1371,457 @@ init_types(struct ast_state *state)
         "     | List(expr* elts, expr_context ctx)\n"
         "     | Tuple(expr* elts, expr_context ctx)\n"
         "     | Slice(expr? lower, expr? upper, expr? step)");
-    if (!state->expr_type) return 0;
-    if (!add_attributes(state, state->expr_type, expr_attributes, 4)) return 0;
+    if (!state->expr_type) return -1;
+    if (add_attributes(state, state->expr_type, expr_attributes, 4) < 0) return
+        -1;
     if (PyObject_SetAttr(state->expr_type, state->end_lineno, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->expr_type, state->end_col_offset, Py_None) ==
         -1)
-        return 0;
+        return -1;
     state->BoolOp_type = make_type(state, "BoolOp", state->expr_type,
                                    BoolOp_fields, 2,
         "BoolOp(boolop op, expr* values)");
-    if (!state->BoolOp_type) return 0;
+    if (!state->BoolOp_type) return -1;
     state->NamedExpr_type = make_type(state, "NamedExpr", state->expr_type,
                                       NamedExpr_fields, 2,
         "NamedExpr(expr target, expr value)");
-    if (!state->NamedExpr_type) return 0;
+    if (!state->NamedExpr_type) return -1;
     state->BinOp_type = make_type(state, "BinOp", state->expr_type,
                                   BinOp_fields, 3,
         "BinOp(expr left, operator op, expr right)");
-    if (!state->BinOp_type) return 0;
+    if (!state->BinOp_type) return -1;
     state->UnaryOp_type = make_type(state, "UnaryOp", state->expr_type,
                                     UnaryOp_fields, 2,
         "UnaryOp(unaryop op, expr operand)");
-    if (!state->UnaryOp_type) return 0;
+    if (!state->UnaryOp_type) return -1;
     state->Lambda_type = make_type(state, "Lambda", state->expr_type,
                                    Lambda_fields, 2,
         "Lambda(arguments args, expr body)");
-    if (!state->Lambda_type) return 0;
+    if (!state->Lambda_type) return -1;
     state->IfExp_type = make_type(state, "IfExp", state->expr_type,
                                   IfExp_fields, 3,
         "IfExp(expr test, expr body, expr orelse)");
-    if (!state->IfExp_type) return 0;
+    if (!state->IfExp_type) return -1;
     state->Dict_type = make_type(state, "Dict", state->expr_type, Dict_fields,
                                  2,
         "Dict(expr* keys, expr* values)");
-    if (!state->Dict_type) return 0;
+    if (!state->Dict_type) return -1;
     state->Set_type = make_type(state, "Set", state->expr_type, Set_fields, 1,
         "Set(expr* elts)");
-    if (!state->Set_type) return 0;
+    if (!state->Set_type) return -1;
     state->ListComp_type = make_type(state, "ListComp", state->expr_type,
                                      ListComp_fields, 2,
         "ListComp(expr elt, comprehension* generators)");
-    if (!state->ListComp_type) return 0;
+    if (!state->ListComp_type) return -1;
     state->SetComp_type = make_type(state, "SetComp", state->expr_type,
                                     SetComp_fields, 2,
         "SetComp(expr elt, comprehension* generators)");
-    if (!state->SetComp_type) return 0;
+    if (!state->SetComp_type) return -1;
     state->DictComp_type = make_type(state, "DictComp", state->expr_type,
                                      DictComp_fields, 3,
         "DictComp(expr key, expr value, comprehension* generators)");
-    if (!state->DictComp_type) return 0;
+    if (!state->DictComp_type) return -1;
     state->GeneratorExp_type = make_type(state, "GeneratorExp",
                                          state->expr_type, GeneratorExp_fields,
                                          2,
         "GeneratorExp(expr elt, comprehension* generators)");
-    if (!state->GeneratorExp_type) return 0;
+    if (!state->GeneratorExp_type) return -1;
     state->Await_type = make_type(state, "Await", state->expr_type,
                                   Await_fields, 1,
         "Await(expr value)");
-    if (!state->Await_type) return 0;
+    if (!state->Await_type) return -1;
     state->Yield_type = make_type(state, "Yield", state->expr_type,
                                   Yield_fields, 1,
         "Yield(expr? value)");
-    if (!state->Yield_type) return 0;
+    if (!state->Yield_type) return -1;
     if (PyObject_SetAttr(state->Yield_type, state->value, Py_None) == -1)
-        return 0;
+        return -1;
     state->YieldFrom_type = make_type(state, "YieldFrom", state->expr_type,
                                       YieldFrom_fields, 1,
         "YieldFrom(expr value)");
-    if (!state->YieldFrom_type) return 0;
+    if (!state->YieldFrom_type) return -1;
     state->Compare_type = make_type(state, "Compare", state->expr_type,
                                     Compare_fields, 3,
         "Compare(expr left, cmpop* ops, expr* comparators)");
-    if (!state->Compare_type) return 0;
+    if (!state->Compare_type) return -1;
     state->Call_type = make_type(state, "Call", state->expr_type, Call_fields,
                                  3,
         "Call(expr func, expr* args, keyword* keywords)");
-    if (!state->Call_type) return 0;
+    if (!state->Call_type) return -1;
     state->FormattedValue_type = make_type(state, "FormattedValue",
                                            state->expr_type,
                                            FormattedValue_fields, 3,
         "FormattedValue(expr value, int conversion, expr? format_spec)");
-    if (!state->FormattedValue_type) return 0;
+    if (!state->FormattedValue_type) return -1;
     if (PyObject_SetAttr(state->FormattedValue_type, state->format_spec,
         Py_None) == -1)
-        return 0;
+        return -1;
     state->JoinedStr_type = make_type(state, "JoinedStr", state->expr_type,
                                       JoinedStr_fields, 1,
         "JoinedStr(expr* values)");
-    if (!state->JoinedStr_type) return 0;
+    if (!state->JoinedStr_type) return -1;
     state->Constant_type = make_type(state, "Constant", state->expr_type,
                                      Constant_fields, 2,
         "Constant(constant value, string? kind)");
-    if (!state->Constant_type) return 0;
+    if (!state->Constant_type) return -1;
     if (PyObject_SetAttr(state->Constant_type, state->kind, Py_None) == -1)
-        return 0;
+        return -1;
     state->Attribute_type = make_type(state, "Attribute", state->expr_type,
                                       Attribute_fields, 3,
         "Attribute(expr value, identifier attr, expr_context ctx)");
-    if (!state->Attribute_type) return 0;
+    if (!state->Attribute_type) return -1;
     state->Subscript_type = make_type(state, "Subscript", state->expr_type,
                                       Subscript_fields, 3,
         "Subscript(expr value, expr slice, expr_context ctx)");
-    if (!state->Subscript_type) return 0;
+    if (!state->Subscript_type) return -1;
     state->Starred_type = make_type(state, "Starred", state->expr_type,
                                     Starred_fields, 2,
         "Starred(expr value, expr_context ctx)");
-    if (!state->Starred_type) return 0;
+    if (!state->Starred_type) return -1;
     state->Name_type = make_type(state, "Name", state->expr_type, Name_fields,
                                  2,
         "Name(identifier id, expr_context ctx)");
-    if (!state->Name_type) return 0;
+    if (!state->Name_type) return -1;
     state->List_type = make_type(state, "List", state->expr_type, List_fields,
                                  2,
         "List(expr* elts, expr_context ctx)");
-    if (!state->List_type) return 0;
+    if (!state->List_type) return -1;
     state->Tuple_type = make_type(state, "Tuple", state->expr_type,
                                   Tuple_fields, 2,
         "Tuple(expr* elts, expr_context ctx)");
-    if (!state->Tuple_type) return 0;
+    if (!state->Tuple_type) return -1;
     state->Slice_type = make_type(state, "Slice", state->expr_type,
                                   Slice_fields, 3,
         "Slice(expr? lower, expr? upper, expr? step)");
-    if (!state->Slice_type) return 0;
+    if (!state->Slice_type) return -1;
     if (PyObject_SetAttr(state->Slice_type, state->lower, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->Slice_type, state->upper, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->Slice_type, state->step, Py_None) == -1)
-        return 0;
+        return -1;
     state->expr_context_type = make_type(state, "expr_context",
                                          state->AST_type, NULL, 0,
         "expr_context = Load | Store | Del");
-    if (!state->expr_context_type) return 0;
-    if (!add_attributes(state, state->expr_context_type, NULL, 0)) return 0;
+    if (!state->expr_context_type) return -1;
+    if (add_attributes(state, state->expr_context_type, NULL, 0) < 0) return -1;
     state->Load_type = make_type(state, "Load", state->expr_context_type, NULL,
                                  0,
         "Load");
-    if (!state->Load_type) return 0;
+    if (!state->Load_type) return -1;
     state->Load_singleton = PyType_GenericNew((PyTypeObject *)state->Load_type,
                                               NULL, NULL);
-    if (!state->Load_singleton) return 0;
+    if (!state->Load_singleton) return -1;
     state->Store_type = make_type(state, "Store", state->expr_context_type,
                                   NULL, 0,
         "Store");
-    if (!state->Store_type) return 0;
+    if (!state->Store_type) return -1;
     state->Store_singleton = PyType_GenericNew((PyTypeObject
                                                *)state->Store_type, NULL, NULL);
-    if (!state->Store_singleton) return 0;
+    if (!state->Store_singleton) return -1;
     state->Del_type = make_type(state, "Del", state->expr_context_type, NULL, 0,
         "Del");
-    if (!state->Del_type) return 0;
+    if (!state->Del_type) return -1;
     state->Del_singleton = PyType_GenericNew((PyTypeObject *)state->Del_type,
                                              NULL, NULL);
-    if (!state->Del_singleton) return 0;
+    if (!state->Del_singleton) return -1;
     state->boolop_type = make_type(state, "boolop", state->AST_type, NULL, 0,
         "boolop = And | Or");
-    if (!state->boolop_type) return 0;
-    if (!add_attributes(state, state->boolop_type, NULL, 0)) return 0;
+    if (!state->boolop_type) return -1;
+    if (add_attributes(state, state->boolop_type, NULL, 0) < 0) return -1;
     state->And_type = make_type(state, "And", state->boolop_type, NULL, 0,
         "And");
-    if (!state->And_type) return 0;
+    if (!state->And_type) return -1;
     state->And_singleton = PyType_GenericNew((PyTypeObject *)state->And_type,
                                              NULL, NULL);
-    if (!state->And_singleton) return 0;
+    if (!state->And_singleton) return -1;
     state->Or_type = make_type(state, "Or", state->boolop_type, NULL, 0,
         "Or");
-    if (!state->Or_type) return 0;
+    if (!state->Or_type) return -1;
     state->Or_singleton = PyType_GenericNew((PyTypeObject *)state->Or_type,
                                             NULL, NULL);
-    if (!state->Or_singleton) return 0;
+    if (!state->Or_singleton) return -1;
     state->operator_type = make_type(state, "operator", state->AST_type, NULL,
                                      0,
         "operator = Add | Sub | Mult | MatMult | Div | Mod | Pow | LShift | RShift | BitOr | BitXor | BitAnd | FloorDiv");
-    if (!state->operator_type) return 0;
-    if (!add_attributes(state, state->operator_type, NULL, 0)) return 0;
+    if (!state->operator_type) return -1;
+    if (add_attributes(state, state->operator_type, NULL, 0) < 0) return -1;
     state->Add_type = make_type(state, "Add", state->operator_type, NULL, 0,
         "Add");
-    if (!state->Add_type) return 0;
+    if (!state->Add_type) return -1;
     state->Add_singleton = PyType_GenericNew((PyTypeObject *)state->Add_type,
                                              NULL, NULL);
-    if (!state->Add_singleton) return 0;
+    if (!state->Add_singleton) return -1;
     state->Sub_type = make_type(state, "Sub", state->operator_type, NULL, 0,
         "Sub");
-    if (!state->Sub_type) return 0;
+    if (!state->Sub_type) return -1;
     state->Sub_singleton = PyType_GenericNew((PyTypeObject *)state->Sub_type,
                                              NULL, NULL);
-    if (!state->Sub_singleton) return 0;
+    if (!state->Sub_singleton) return -1;
     state->Mult_type = make_type(state, "Mult", state->operator_type, NULL, 0,
         "Mult");
-    if (!state->Mult_type) return 0;
+    if (!state->Mult_type) return -1;
     state->Mult_singleton = PyType_GenericNew((PyTypeObject *)state->Mult_type,
                                               NULL, NULL);
-    if (!state->Mult_singleton) return 0;
+    if (!state->Mult_singleton) return -1;
     state->MatMult_type = make_type(state, "MatMult", state->operator_type,
                                     NULL, 0,
         "MatMult");
-    if (!state->MatMult_type) return 0;
+    if (!state->MatMult_type) return -1;
     state->MatMult_singleton = PyType_GenericNew((PyTypeObject
                                                  *)state->MatMult_type, NULL,
                                                  NULL);
-    if (!state->MatMult_singleton) return 0;
+    if (!state->MatMult_singleton) return -1;
     state->Div_type = make_type(state, "Div", state->operator_type, NULL, 0,
         "Div");
-    if (!state->Div_type) return 0;
+    if (!state->Div_type) return -1;
     state->Div_singleton = PyType_GenericNew((PyTypeObject *)state->Div_type,
                                              NULL, NULL);
-    if (!state->Div_singleton) return 0;
+    if (!state->Div_singleton) return -1;
     state->Mod_type = make_type(state, "Mod", state->operator_type, NULL, 0,
         "Mod");
-    if (!state->Mod_type) return 0;
+    if (!state->Mod_type) return -1;
     state->Mod_singleton = PyType_GenericNew((PyTypeObject *)state->Mod_type,
                                              NULL, NULL);
-    if (!state->Mod_singleton) return 0;
+    if (!state->Mod_singleton) return -1;
     state->Pow_type = make_type(state, "Pow", state->operator_type, NULL, 0,
         "Pow");
-    if (!state->Pow_type) return 0;
+    if (!state->Pow_type) return -1;
     state->Pow_singleton = PyType_GenericNew((PyTypeObject *)state->Pow_type,
                                              NULL, NULL);
-    if (!state->Pow_singleton) return 0;
+    if (!state->Pow_singleton) return -1;
     state->LShift_type = make_type(state, "LShift", state->operator_type, NULL,
                                    0,
         "LShift");
-    if (!state->LShift_type) return 0;
+    if (!state->LShift_type) return -1;
     state->LShift_singleton = PyType_GenericNew((PyTypeObject
                                                 *)state->LShift_type, NULL,
                                                 NULL);
-    if (!state->LShift_singleton) return 0;
+    if (!state->LShift_singleton) return -1;
     state->RShift_type = make_type(state, "RShift", state->operator_type, NULL,
                                    0,
         "RShift");
-    if (!state->RShift_type) return 0;
+    if (!state->RShift_type) return -1;
     state->RShift_singleton = PyType_GenericNew((PyTypeObject
                                                 *)state->RShift_type, NULL,
                                                 NULL);
-    if (!state->RShift_singleton) return 0;
+    if (!state->RShift_singleton) return -1;
     state->BitOr_type = make_type(state, "BitOr", state->operator_type, NULL, 0,
         "BitOr");
-    if (!state->BitOr_type) return 0;
+    if (!state->BitOr_type) return -1;
     state->BitOr_singleton = PyType_GenericNew((PyTypeObject
                                                *)state->BitOr_type, NULL, NULL);
-    if (!state->BitOr_singleton) return 0;
+    if (!state->BitOr_singleton) return -1;
     state->BitXor_type = make_type(state, "BitXor", state->operator_type, NULL,
                                    0,
         "BitXor");
-    if (!state->BitXor_type) return 0;
+    if (!state->BitXor_type) return -1;
     state->BitXor_singleton = PyType_GenericNew((PyTypeObject
                                                 *)state->BitXor_type, NULL,
                                                 NULL);
-    if (!state->BitXor_singleton) return 0;
+    if (!state->BitXor_singleton) return -1;
     state->BitAnd_type = make_type(state, "BitAnd", state->operator_type, NULL,
                                    0,
         "BitAnd");
-    if (!state->BitAnd_type) return 0;
+    if (!state->BitAnd_type) return -1;
     state->BitAnd_singleton = PyType_GenericNew((PyTypeObject
                                                 *)state->BitAnd_type, NULL,
                                                 NULL);
-    if (!state->BitAnd_singleton) return 0;
+    if (!state->BitAnd_singleton) return -1;
     state->FloorDiv_type = make_type(state, "FloorDiv", state->operator_type,
                                      NULL, 0,
         "FloorDiv");
-    if (!state->FloorDiv_type) return 0;
+    if (!state->FloorDiv_type) return -1;
     state->FloorDiv_singleton = PyType_GenericNew((PyTypeObject
                                                   *)state->FloorDiv_type, NULL,
                                                   NULL);
-    if (!state->FloorDiv_singleton) return 0;
+    if (!state->FloorDiv_singleton) return -1;
     state->unaryop_type = make_type(state, "unaryop", state->AST_type, NULL, 0,
         "unaryop = Invert | Not | UAdd | USub");
-    if (!state->unaryop_type) return 0;
-    if (!add_attributes(state, state->unaryop_type, NULL, 0)) return 0;
+    if (!state->unaryop_type) return -1;
+    if (add_attributes(state, state->unaryop_type, NULL, 0) < 0) return -1;
     state->Invert_type = make_type(state, "Invert", state->unaryop_type, NULL,
                                    0,
         "Invert");
-    if (!state->Invert_type) return 0;
+    if (!state->Invert_type) return -1;
     state->Invert_singleton = PyType_GenericNew((PyTypeObject
                                                 *)state->Invert_type, NULL,
                                                 NULL);
-    if (!state->Invert_singleton) return 0;
+    if (!state->Invert_singleton) return -1;
     state->Not_type = make_type(state, "Not", state->unaryop_type, NULL, 0,
         "Not");
-    if (!state->Not_type) return 0;
+    if (!state->Not_type) return -1;
     state->Not_singleton = PyType_GenericNew((PyTypeObject *)state->Not_type,
                                              NULL, NULL);
-    if (!state->Not_singleton) return 0;
+    if (!state->Not_singleton) return -1;
     state->UAdd_type = make_type(state, "UAdd", state->unaryop_type, NULL, 0,
         "UAdd");
-    if (!state->UAdd_type) return 0;
+    if (!state->UAdd_type) return -1;
     state->UAdd_singleton = PyType_GenericNew((PyTypeObject *)state->UAdd_type,
                                               NULL, NULL);
-    if (!state->UAdd_singleton) return 0;
+    if (!state->UAdd_singleton) return -1;
     state->USub_type = make_type(state, "USub", state->unaryop_type, NULL, 0,
         "USub");
-    if (!state->USub_type) return 0;
+    if (!state->USub_type) return -1;
     state->USub_singleton = PyType_GenericNew((PyTypeObject *)state->USub_type,
                                               NULL, NULL);
-    if (!state->USub_singleton) return 0;
+    if (!state->USub_singleton) return -1;
     state->cmpop_type = make_type(state, "cmpop", state->AST_type, NULL, 0,
         "cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn");
-    if (!state->cmpop_type) return 0;
-    if (!add_attributes(state, state->cmpop_type, NULL, 0)) return 0;
+    if (!state->cmpop_type) return -1;
+    if (add_attributes(state, state->cmpop_type, NULL, 0) < 0) return -1;
     state->Eq_type = make_type(state, "Eq", state->cmpop_type, NULL, 0,
         "Eq");
-    if (!state->Eq_type) return 0;
+    if (!state->Eq_type) return -1;
     state->Eq_singleton = PyType_GenericNew((PyTypeObject *)state->Eq_type,
                                             NULL, NULL);
-    if (!state->Eq_singleton) return 0;
+    if (!state->Eq_singleton) return -1;
     state->NotEq_type = make_type(state, "NotEq", state->cmpop_type, NULL, 0,
         "NotEq");
-    if (!state->NotEq_type) return 0;
+    if (!state->NotEq_type) return -1;
     state->NotEq_singleton = PyType_GenericNew((PyTypeObject
                                                *)state->NotEq_type, NULL, NULL);
-    if (!state->NotEq_singleton) return 0;
+    if (!state->NotEq_singleton) return -1;
     state->Lt_type = make_type(state, "Lt", state->cmpop_type, NULL, 0,
         "Lt");
-    if (!state->Lt_type) return 0;
+    if (!state->Lt_type) return -1;
     state->Lt_singleton = PyType_GenericNew((PyTypeObject *)state->Lt_type,
                                             NULL, NULL);
-    if (!state->Lt_singleton) return 0;
+    if (!state->Lt_singleton) return -1;
     state->LtE_type = make_type(state, "LtE", state->cmpop_type, NULL, 0,
         "LtE");
-    if (!state->LtE_type) return 0;
+    if (!state->LtE_type) return -1;
     state->LtE_singleton = PyType_GenericNew((PyTypeObject *)state->LtE_type,
                                              NULL, NULL);
-    if (!state->LtE_singleton) return 0;
+    if (!state->LtE_singleton) return -1;
     state->Gt_type = make_type(state, "Gt", state->cmpop_type, NULL, 0,
         "Gt");
-    if (!state->Gt_type) return 0;
+    if (!state->Gt_type) return -1;
     state->Gt_singleton = PyType_GenericNew((PyTypeObject *)state->Gt_type,
                                             NULL, NULL);
-    if (!state->Gt_singleton) return 0;
+    if (!state->Gt_singleton) return -1;
     state->GtE_type = make_type(state, "GtE", state->cmpop_type, NULL, 0,
         "GtE");
-    if (!state->GtE_type) return 0;
+    if (!state->GtE_type) return -1;
     state->GtE_singleton = PyType_GenericNew((PyTypeObject *)state->GtE_type,
                                              NULL, NULL);
-    if (!state->GtE_singleton) return 0;
+    if (!state->GtE_singleton) return -1;
     state->Is_type = make_type(state, "Is", state->cmpop_type, NULL, 0,
         "Is");
-    if (!state->Is_type) return 0;
+    if (!state->Is_type) return -1;
     state->Is_singleton = PyType_GenericNew((PyTypeObject *)state->Is_type,
                                             NULL, NULL);
-    if (!state->Is_singleton) return 0;
+    if (!state->Is_singleton) return -1;
     state->IsNot_type = make_type(state, "IsNot", state->cmpop_type, NULL, 0,
         "IsNot");
-    if (!state->IsNot_type) return 0;
+    if (!state->IsNot_type) return -1;
     state->IsNot_singleton = PyType_GenericNew((PyTypeObject
                                                *)state->IsNot_type, NULL, NULL);
-    if (!state->IsNot_singleton) return 0;
+    if (!state->IsNot_singleton) return -1;
     state->In_type = make_type(state, "In", state->cmpop_type, NULL, 0,
         "In");
-    if (!state->In_type) return 0;
+    if (!state->In_type) return -1;
     state->In_singleton = PyType_GenericNew((PyTypeObject *)state->In_type,
                                             NULL, NULL);
-    if (!state->In_singleton) return 0;
+    if (!state->In_singleton) return -1;
     state->NotIn_type = make_type(state, "NotIn", state->cmpop_type, NULL, 0,
         "NotIn");
-    if (!state->NotIn_type) return 0;
+    if (!state->NotIn_type) return -1;
     state->NotIn_singleton = PyType_GenericNew((PyTypeObject
                                                *)state->NotIn_type, NULL, NULL);
-    if (!state->NotIn_singleton) return 0;
+    if (!state->NotIn_singleton) return -1;
     state->comprehension_type = make_type(state, "comprehension",
                                           state->AST_type,
                                           comprehension_fields, 4,
         "comprehension(expr target, expr iter, expr* ifs, int is_async)");
-    if (!state->comprehension_type) return 0;
-    if (!add_attributes(state, state->comprehension_type, NULL, 0)) return 0;
+    if (!state->comprehension_type) return -1;
+    if (add_attributes(state, state->comprehension_type, NULL, 0) < 0) return
+        -1;
     state->excepthandler_type = make_type(state, "excepthandler",
                                           state->AST_type, NULL, 0,
         "excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body)");
-    if (!state->excepthandler_type) return 0;
-    if (!add_attributes(state, state->excepthandler_type,
-        excepthandler_attributes, 4)) return 0;
+    if (!state->excepthandler_type) return -1;
+    if (add_attributes(state, state->excepthandler_type,
+        excepthandler_attributes, 4) < 0) return -1;
     if (PyObject_SetAttr(state->excepthandler_type, state->end_lineno, Py_None)
         == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->excepthandler_type, state->end_col_offset,
         Py_None) == -1)
-        return 0;
+        return -1;
     state->ExceptHandler_type = make_type(state, "ExceptHandler",
                                           state->excepthandler_type,
                                           ExceptHandler_fields, 3,
         "ExceptHandler(expr? type, identifier? name, stmt* body)");
-    if (!state->ExceptHandler_type) return 0;
+    if (!state->ExceptHandler_type) return -1;
     if (PyObject_SetAttr(state->ExceptHandler_type, state->type, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->ExceptHandler_type, state->name, Py_None) == -1)
-        return 0;
+        return -1;
     state->arguments_type = make_type(state, "arguments", state->AST_type,
                                       arguments_fields, 7,
         "arguments(arg* posonlyargs, arg* args, arg? vararg, arg* kwonlyargs, expr* kw_defaults, arg? kwarg, expr* defaults)");
-    if (!state->arguments_type) return 0;
-    if (!add_attributes(state, state->arguments_type, NULL, 0)) return 0;
+    if (!state->arguments_type) return -1;
+    if (add_attributes(state, state->arguments_type, NULL, 0) < 0) return -1;
     if (PyObject_SetAttr(state->arguments_type, state->vararg, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->arguments_type, state->kwarg, Py_None) == -1)
-        return 0;
+        return -1;
     state->arg_type = make_type(state, "arg", state->AST_type, arg_fields, 3,
         "arg(identifier arg, expr? annotation, string? type_comment)");
-    if (!state->arg_type) return 0;
-    if (!add_attributes(state, state->arg_type, arg_attributes, 4)) return 0;
+    if (!state->arg_type) return -1;
+    if (add_attributes(state, state->arg_type, arg_attributes, 4) < 0) return
+        -1;
     if (PyObject_SetAttr(state->arg_type, state->annotation, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->arg_type, state->type_comment, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->arg_type, state->end_lineno, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->arg_type, state->end_col_offset, Py_None) == -1)
-        return 0;
+        return -1;
     state->keyword_type = make_type(state, "keyword", state->AST_type,
                                     keyword_fields, 2,
         "keyword(identifier? arg, expr value)");
-    if (!state->keyword_type) return 0;
-    if (!add_attributes(state, state->keyword_type, keyword_attributes, 4))
-        return 0;
+    if (!state->keyword_type) return -1;
+    if (add_attributes(state, state->keyword_type, keyword_attributes, 4) < 0)
+        return -1;
     if (PyObject_SetAttr(state->keyword_type, state->arg, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->keyword_type, state->end_lineno, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->keyword_type, state->end_col_offset, Py_None)
         == -1)
-        return 0;
+        return -1;
     state->alias_type = make_type(state, "alias", state->AST_type,
                                   alias_fields, 2,
         "alias(identifier name, identifier? asname)");
-    if (!state->alias_type) return 0;
-    if (!add_attributes(state, state->alias_type, alias_attributes, 4)) return
-        0;
+    if (!state->alias_type) return -1;
+    if (add_attributes(state, state->alias_type, alias_attributes, 4) < 0)
+        return -1;
     if (PyObject_SetAttr(state->alias_type, state->asname, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->alias_type, state->end_lineno, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->alias_type, state->end_col_offset, Py_None) ==
         -1)
-        return 0;
+        return -1;
     state->withitem_type = make_type(state, "withitem", state->AST_type,
                                      withitem_fields, 2,
         "withitem(expr context_expr, expr? optional_vars)");
-    if (!state->withitem_type) return 0;
-    if (!add_attributes(state, state->withitem_type, NULL, 0)) return 0;
+    if (!state->withitem_type) return -1;
+    if (add_attributes(state, state->withitem_type, NULL, 0) < 0) return -1;
     if (PyObject_SetAttr(state->withitem_type, state->optional_vars, Py_None)
         == -1)
-        return 0;
+        return -1;
     state->match_case_type = make_type(state, "match_case", state->AST_type,
                                        match_case_fields, 3,
         "match_case(pattern pattern, expr? guard, stmt* body)");
-    if (!state->match_case_type) return 0;
-    if (!add_attributes(state, state->match_case_type, NULL, 0)) return 0;
+    if (!state->match_case_type) return -1;
+    if (add_attributes(state, state->match_case_type, NULL, 0) < 0) return -1;
     if (PyObject_SetAttr(state->match_case_type, state->guard, Py_None) == -1)
-        return 0;
+        return -1;
     state->pattern_type = make_type(state, "pattern", state->AST_type, NULL, 0,
         "pattern = MatchValue(expr value)\n"
         "        | MatchSingleton(constant value)\n"
@@ -1796,69 +1831,92 @@ init_types(struct ast_state *state)
         "        | MatchStar(identifier? name)\n"
         "        | MatchAs(pattern? pattern, identifier? name)\n"
         "        | MatchOr(pattern* patterns)");
-    if (!state->pattern_type) return 0;
-    if (!add_attributes(state, state->pattern_type, pattern_attributes, 4))
-        return 0;
+    if (!state->pattern_type) return -1;
+    if (add_attributes(state, state->pattern_type, pattern_attributes, 4) < 0)
+        return -1;
     state->MatchValue_type = make_type(state, "MatchValue",
                                        state->pattern_type, MatchValue_fields,
                                        1,
         "MatchValue(expr value)");
-    if (!state->MatchValue_type) return 0;
+    if (!state->MatchValue_type) return -1;
     state->MatchSingleton_type = make_type(state, "MatchSingleton",
                                            state->pattern_type,
                                            MatchSingleton_fields, 1,
         "MatchSingleton(constant value)");
-    if (!state->MatchSingleton_type) return 0;
+    if (!state->MatchSingleton_type) return -1;
     state->MatchSequence_type = make_type(state, "MatchSequence",
                                           state->pattern_type,
                                           MatchSequence_fields, 1,
         "MatchSequence(pattern* patterns)");
-    if (!state->MatchSequence_type) return 0;
+    if (!state->MatchSequence_type) return -1;
     state->MatchMapping_type = make_type(state, "MatchMapping",
                                          state->pattern_type,
                                          MatchMapping_fields, 3,
         "MatchMapping(expr* keys, pattern* patterns, identifier? rest)");
-    if (!state->MatchMapping_type) return 0;
+    if (!state->MatchMapping_type) return -1;
     if (PyObject_SetAttr(state->MatchMapping_type, state->rest, Py_None) == -1)
-        return 0;
+        return -1;
     state->MatchClass_type = make_type(state, "MatchClass",
                                        state->pattern_type, MatchClass_fields,
                                        4,
         "MatchClass(expr cls, pattern* patterns, identifier* kwd_attrs, pattern* kwd_patterns)");
-    if (!state->MatchClass_type) return 0;
+    if (!state->MatchClass_type) return -1;
     state->MatchStar_type = make_type(state, "MatchStar", state->pattern_type,
                                       MatchStar_fields, 1,
         "MatchStar(identifier? name)");
-    if (!state->MatchStar_type) return 0;
+    if (!state->MatchStar_type) return -1;
     if (PyObject_SetAttr(state->MatchStar_type, state->name, Py_None) == -1)
-        return 0;
+        return -1;
     state->MatchAs_type = make_type(state, "MatchAs", state->pattern_type,
                                     MatchAs_fields, 2,
         "MatchAs(pattern? pattern, identifier? name)");
-    if (!state->MatchAs_type) return 0;
+    if (!state->MatchAs_type) return -1;
     if (PyObject_SetAttr(state->MatchAs_type, state->pattern, Py_None) == -1)
-        return 0;
+        return -1;
     if (PyObject_SetAttr(state->MatchAs_type, state->name, Py_None) == -1)
-        return 0;
+        return -1;
     state->MatchOr_type = make_type(state, "MatchOr", state->pattern_type,
                                     MatchOr_fields, 1,
         "MatchOr(pattern* patterns)");
-    if (!state->MatchOr_type) return 0;
+    if (!state->MatchOr_type) return -1;
     state->type_ignore_type = make_type(state, "type_ignore", state->AST_type,
                                         NULL, 0,
         "type_ignore = TypeIgnore(int lineno, string tag)");
-    if (!state->type_ignore_type) return 0;
-    if (!add_attributes(state, state->type_ignore_type, NULL, 0)) return 0;
+    if (!state->type_ignore_type) return -1;
+    if (add_attributes(state, state->type_ignore_type, NULL, 0) < 0) return -1;
     state->TypeIgnore_type = make_type(state, "TypeIgnore",
                                        state->type_ignore_type,
                                        TypeIgnore_fields, 2,
         "TypeIgnore(int lineno, string tag)");
-    if (!state->TypeIgnore_type) return 0;
+    if (!state->TypeIgnore_type) return -1;
+    state->type_param_type = make_type(state, "type_param", state->AST_type,
+                                       NULL, 0,
+        "type_param = TypeVar(identifier name, expr? bound)\n"
+        "           | ParamSpec(identifier name)\n"
+        "           | TypeVarTuple(identifier name)");
+    if (!state->type_param_type) return -1;
+    if (add_attributes(state, state->type_param_type, type_param_attributes, 4)
+        < 0) return -1;
+    state->TypeVar_type = make_type(state, "TypeVar", state->type_param_type,
+                                    TypeVar_fields, 2,
+        "TypeVar(identifier name, expr? bound)");
+    if (!state->TypeVar_type) return -1;
+    if (PyObject_SetAttr(state->TypeVar_type, state->bound, Py_None) == -1)
+        return -1;
+    state->ParamSpec_type = make_type(state, "ParamSpec",
+                                      state->type_param_type, ParamSpec_fields,
+                                      1,
+        "ParamSpec(identifier name)");
+    if (!state->ParamSpec_type) return -1;
+    state->TypeVarTuple_type = make_type(state, "TypeVarTuple",
+                                         state->type_param_type,
+                                         TypeVarTuple_fields, 1,
+        "TypeVarTuple(identifier name)");
+    if (!state->TypeVarTuple_type) return -1;
 
     state->recursion_depth = 0;
     state->recursion_limit = 0;
-    state->initialized = 1;
-    return 1;
+    return 0;
 }
 
 static int obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out,
@@ -1897,6 +1955,8 @@ static int obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty*
                            out, PyArena* arena);
 static int obj2ast_type_ignore(struct ast_state *state, PyObject* obj,
                                type_ignore_ty* out, PyArena* arena);
+static int obj2ast_type_param(struct ast_state *state, PyObject* obj,
+                              type_param_ty* out, PyArena* arena);
 
 mod_ty
 _PyAST_Module(asdl_stmt_seq * body, asdl_type_ignore_seq * type_ignores,
@@ -1962,8 +2022,9 @@ _PyAST_FunctionType(asdl_expr_seq * argtypes, expr_ty returns, PyArena *arena)
 stmt_ty
 _PyAST_FunctionDef(identifier name, arguments_ty args, asdl_stmt_seq * body,
                    asdl_expr_seq * decorator_list, expr_ty returns, string
-                   type_comment, int lineno, int col_offset, int end_lineno,
-                   int end_col_offset, PyArena *arena)
+                   type_comment, asdl_type_param_seq * type_params, int lineno,
+                   int col_offset, int end_lineno, int end_col_offset, PyArena
+                   *arena)
 {
     stmt_ty p;
     if (!name) {
@@ -1986,6 +2047,7 @@ _PyAST_FunctionDef(identifier name, arguments_ty args, asdl_stmt_seq * body,
     p->v.FunctionDef.decorator_list = decorator_list;
     p->v.FunctionDef.returns = returns;
     p->v.FunctionDef.type_comment = type_comment;
+    p->v.FunctionDef.type_params = type_params;
     p->lineno = lineno;
     p->col_offset = col_offset;
     p->end_lineno = end_lineno;
@@ -1996,8 +2058,9 @@ _PyAST_FunctionDef(identifier name, arguments_ty args, asdl_stmt_seq * body,
 stmt_ty
 _PyAST_AsyncFunctionDef(identifier name, arguments_ty args, asdl_stmt_seq *
                         body, asdl_expr_seq * decorator_list, expr_ty returns,
-                        string type_comment, int lineno, int col_offset, int
-                        end_lineno, int end_col_offset, PyArena *arena)
+                        string type_comment, asdl_type_param_seq * type_params,
+                        int lineno, int col_offset, int end_lineno, int
+                        end_col_offset, PyArena *arena)
 {
     stmt_ty p;
     if (!name) {
@@ -2020,6 +2083,7 @@ _PyAST_AsyncFunctionDef(identifier name, arguments_ty args, asdl_stmt_seq *
     p->v.AsyncFunctionDef.decorator_list = decorator_list;
     p->v.AsyncFunctionDef.returns = returns;
     p->v.AsyncFunctionDef.type_comment = type_comment;
+    p->v.AsyncFunctionDef.type_params = type_params;
     p->lineno = lineno;
     p->col_offset = col_offset;
     p->end_lineno = end_lineno;
@@ -2030,8 +2094,8 @@ _PyAST_AsyncFunctionDef(identifier name, arguments_ty args, asdl_stmt_seq *
 stmt_ty
 _PyAST_ClassDef(identifier name, asdl_expr_seq * bases, asdl_keyword_seq *
                 keywords, asdl_stmt_seq * body, asdl_expr_seq * decorator_list,
-                int lineno, int col_offset, int end_lineno, int end_col_offset,
-                PyArena *arena)
+                asdl_type_param_seq * type_params, int lineno, int col_offset,
+                int end_lineno, int end_col_offset, PyArena *arena)
 {
     stmt_ty p;
     if (!name) {
@@ -2048,6 +2112,7 @@ _PyAST_ClassDef(identifier name, asdl_expr_seq * bases, asdl_keyword_seq *
     p->v.ClassDef.keywords = keywords;
     p->v.ClassDef.body = body;
     p->v.ClassDef.decorator_list = decorator_list;
+    p->v.ClassDef.type_params = type_params;
     p->lineno = lineno;
     p->col_offset = col_offset;
     p->end_lineno = end_lineno;
@@ -2114,6 +2179,36 @@ _PyAST_Assign(asdl_expr_seq * targets, expr_ty value, string type_comment, int
     return p;
 }
 
+stmt_ty
+_PyAST_TypeAlias(expr_ty name, asdl_type_param_seq * type_params, expr_ty
+                 value, int lineno, int col_offset, int end_lineno, int
+                 end_col_offset, PyArena *arena)
+{
+    stmt_ty p;
+    if (!name) {
+        PyErr_SetString(PyExc_ValueError,
+                        "field 'name' is required for TypeAlias");
+        return NULL;
+    }
+    if (!value) {
+        PyErr_SetString(PyExc_ValueError,
+                        "field 'value' is required for TypeAlias");
+        return NULL;
+    }
+    p = (stmt_ty)_PyArena_Malloc(arena, sizeof(*p));
+    if (!p)
+        return NULL;
+    p->kind = TypeAlias_kind;
+    p->v.TypeAlias.name = name;
+    p->v.TypeAlias.type_params = type_params;
+    p->v.TypeAlias.value = value;
+    p->lineno = lineno;
+    p->col_offset = col_offset;
+    p->end_lineno = end_lineno;
+    p->end_col_offset = end_col_offset;
+    return p;
+}
+
 stmt_ty
 _PyAST_AugAssign(expr_ty target, operator_ty op, expr_ty value, int lineno, int
                  col_offset, int end_lineno, int end_col_offset, PyArena *arena)
@@ -3606,6 +3701,73 @@ _PyAST_TypeIgnore(int lineno, string tag, PyArena *arena)
     return p;
 }
 
+type_param_ty
+_PyAST_TypeVar(identifier name, expr_ty bound, int lineno, int col_offset, int
+               end_lineno, int end_col_offset, PyArena *arena)
+{
+    type_param_ty p;
+    if (!name) {
+        PyErr_SetString(PyExc_ValueError,
+                        "field 'name' is required for TypeVar");
+        return NULL;
+    }
+    p = (type_param_ty)_PyArena_Malloc(arena, sizeof(*p));
+    if (!p)
+        return NULL;
+    p->kind = TypeVar_kind;
+    p->v.TypeVar.name = name;
+    p->v.TypeVar.bound = bound;
+    p->lineno = lineno;
+    p->col_offset = col_offset;
+    p->end_lineno = end_lineno;
+    p->end_col_offset = end_col_offset;
+    return p;
+}
+
+type_param_ty
+_PyAST_ParamSpec(identifier name, int lineno, int col_offset, int end_lineno,
+                 int end_col_offset, PyArena *arena)
+{
+    type_param_ty p;
+    if (!name) {
+        PyErr_SetString(PyExc_ValueError,
+                        "field 'name' is required for ParamSpec");
+        return NULL;
+    }
+    p = (type_param_ty)_PyArena_Malloc(arena, sizeof(*p));
+    if (!p)
+        return NULL;
+    p->kind = ParamSpec_kind;
+    p->v.ParamSpec.name = name;
+    p->lineno = lineno;
+    p->col_offset = col_offset;
+    p->end_lineno = end_lineno;
+    p->end_col_offset = end_col_offset;
+    return p;
+}
+
+type_param_ty
+_PyAST_TypeVarTuple(identifier name, int lineno, int col_offset, int
+                    end_lineno, int end_col_offset, PyArena *arena)
+{
+    type_param_ty p;
+    if (!name) {
+        PyErr_SetString(PyExc_ValueError,
+                        "field 'name' is required for TypeVarTuple");
+        return NULL;
+    }
+    p = (type_param_ty)_PyArena_Malloc(arena, sizeof(*p));
+    if (!p)
+        return NULL;
+    p->kind = TypeVarTuple_kind;
+    p->v.TypeVarTuple.name = name;
+    p->lineno = lineno;
+    p->col_offset = col_offset;
+    p->end_lineno = end_lineno;
+    p->end_col_offset = end_col_offset;
+    return p;
+}
+
 
 PyObject*
 ast2obj_mod(struct ast_state *state, void* _o)
@@ -3619,7 +3781,7 @@ ast2obj_mod(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     switch (o->kind) {
     case Module_kind:
@@ -3679,6 +3841,7 @@ ast2obj_mod(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -3696,7 +3859,7 @@ ast2obj_stmt(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     switch (o->kind) {
     case FunctionDef_kind:
@@ -3735,6 +3898,12 @@ ast2obj_stmt(struct ast_state *state, void* _o)
         if (PyObject_SetAttr(result, state->type_comment, value) == -1)
             goto failed;
         Py_DECREF(value);
+        value = ast2obj_list(state, (asdl_seq*)o->v.FunctionDef.type_params,
+                             ast2obj_type_param);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->type_params, value) == -1)
+            goto failed;
+        Py_DECREF(value);
         break;
     case AsyncFunctionDef_kind:
         tp = (PyTypeObject *)state->AsyncFunctionDef_type;
@@ -3773,6 +3942,13 @@ ast2obj_stmt(struct ast_state *state, void* _o)
         if (PyObject_SetAttr(result, state->type_comment, value) == -1)
             goto failed;
         Py_DECREF(value);
+        value = ast2obj_list(state,
+                             (asdl_seq*)o->v.AsyncFunctionDef.type_params,
+                             ast2obj_type_param);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->type_params, value) == -1)
+            goto failed;
+        Py_DECREF(value);
         break;
     case ClassDef_kind:
         tp = (PyTypeObject *)state->ClassDef_type;
@@ -3807,6 +3983,12 @@ ast2obj_stmt(struct ast_state *state, void* _o)
         if (PyObject_SetAttr(result, state->decorator_list, value) == -1)
             goto failed;
         Py_DECREF(value);
+        value = ast2obj_list(state, (asdl_seq*)o->v.ClassDef.type_params,
+                             ast2obj_type_param);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->type_params, value) == -1)
+            goto failed;
+        Py_DECREF(value);
         break;
     case Return_kind:
         tp = (PyTypeObject *)state->Return_type;
@@ -3850,6 +4032,27 @@ ast2obj_stmt(struct ast_state *state, void* _o)
             goto failed;
         Py_DECREF(value);
         break;
+    case TypeAlias_kind:
+        tp = (PyTypeObject *)state->TypeAlias_type;
+        result = PyType_GenericNew(tp, NULL, NULL);
+        if (!result) goto failed;
+        value = ast2obj_expr(state, o->v.TypeAlias.name);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->name, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        value = ast2obj_list(state, (asdl_seq*)o->v.TypeAlias.type_params,
+                             ast2obj_type_param);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->type_params, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        value = ast2obj_expr(state, o->v.TypeAlias.value);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->value, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        break;
     case AugAssign_kind:
         tp = (PyTypeObject *)state->AugAssign_type;
         result = PyType_GenericNew(tp, NULL, NULL);
@@ -4244,6 +4447,7 @@ ast2obj_stmt(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -4261,7 +4465,7 @@ ast2obj_expr(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     switch (o->kind) {
     case BoolOp_kind:
@@ -4727,6 +4931,7 @@ ast2obj_expr(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -4838,7 +5043,7 @@ ast2obj_comprehension(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->comprehension_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -4866,6 +5071,7 @@ ast2obj_comprehension(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -4883,7 +5089,7 @@ ast2obj_excepthandler(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     switch (o->kind) {
     case ExceptHandler_kind:
@@ -4931,6 +5137,7 @@ ast2obj_excepthandler(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -4948,7 +5155,7 @@ ast2obj_arguments(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->arguments_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -4991,6 +5198,7 @@ ast2obj_arguments(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5008,7 +5216,7 @@ ast2obj_arg(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->arg_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -5051,6 +5259,7 @@ ast2obj_arg(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5068,7 +5277,7 @@ ast2obj_keyword(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->keyword_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -5106,6 +5315,7 @@ ast2obj_keyword(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5123,7 +5333,7 @@ ast2obj_alias(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->alias_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -5161,6 +5371,7 @@ ast2obj_alias(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5178,7 +5389,7 @@ ast2obj_withitem(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->withitem_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -5196,6 +5407,7 @@ ast2obj_withitem(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5213,7 +5425,7 @@ ast2obj_match_case(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     tp = (PyTypeObject *)state->match_case_type;
     result = PyType_GenericNew(tp, NULL, NULL);
@@ -5236,6 +5448,7 @@ ast2obj_match_case(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5253,7 +5466,7 @@ ast2obj_pattern(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     switch (o->kind) {
     case MatchValue_kind:
@@ -5397,6 +5610,7 @@ ast2obj_pattern(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5414,7 +5628,7 @@ ast2obj_type_ignore(struct ast_state *state, void* _o)
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
             "maximum recursion depth exceeded during ast construction");
-        return 0;
+        return NULL;
     }
     switch (o->kind) {
     case TypeIgnore_kind:
@@ -5436,6 +5650,87 @@ ast2obj_type_ignore(struct ast_state *state, void* _o)
     state->recursion_depth--;
     return result;
 failed:
+    state->recursion_depth--;
+    Py_XDECREF(value);
+    Py_XDECREF(result);
+    return NULL;
+}
+
+PyObject*
+ast2obj_type_param(struct ast_state *state, void* _o)
+{
+    type_param_ty o = (type_param_ty)_o;
+    PyObject *result = NULL, *value = NULL;
+    PyTypeObject *tp;
+    if (!o) {
+        Py_RETURN_NONE;
+    }
+    if (++state->recursion_depth > state->recursion_limit) {
+        PyErr_SetString(PyExc_RecursionError,
+            "maximum recursion depth exceeded during ast construction");
+        return NULL;
+    }
+    switch (o->kind) {
+    case TypeVar_kind:
+        tp = (PyTypeObject *)state->TypeVar_type;
+        result = PyType_GenericNew(tp, NULL, NULL);
+        if (!result) goto failed;
+        value = ast2obj_identifier(state, o->v.TypeVar.name);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->name, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        value = ast2obj_expr(state, o->v.TypeVar.bound);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->bound, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        break;
+    case ParamSpec_kind:
+        tp = (PyTypeObject *)state->ParamSpec_type;
+        result = PyType_GenericNew(tp, NULL, NULL);
+        if (!result) goto failed;
+        value = ast2obj_identifier(state, o->v.ParamSpec.name);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->name, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        break;
+    case TypeVarTuple_kind:
+        tp = (PyTypeObject *)state->TypeVarTuple_type;
+        result = PyType_GenericNew(tp, NULL, NULL);
+        if (!result) goto failed;
+        value = ast2obj_identifier(state, o->v.TypeVarTuple.name);
+        if (!value) goto failed;
+        if (PyObject_SetAttr(result, state->name, value) == -1)
+            goto failed;
+        Py_DECREF(value);
+        break;
+    }
+    value = ast2obj_int(state, o->lineno);
+    if (!value) goto failed;
+    if (PyObject_SetAttr(result, state->lineno, value) < 0)
+        goto failed;
+    Py_DECREF(value);
+    value = ast2obj_int(state, o->col_offset);
+    if (!value) goto failed;
+    if (PyObject_SetAttr(result, state->col_offset, value) < 0)
+        goto failed;
+    Py_DECREF(value);
+    value = ast2obj_int(state, o->end_lineno);
+    if (!value) goto failed;
+    if (PyObject_SetAttr(result, state->end_lineno, value) < 0)
+        goto failed;
+    Py_DECREF(value);
+    value = ast2obj_int(state, o->end_col_offset);
+    if (!value) goto failed;
+    if (PyObject_SetAttr(result, state->end_col_offset, value) < 0)
+        goto failed;
+    Py_DECREF(value);
+    state->recursion_depth--;
+    return result;
+failed:
+    state->recursion_depth--;
     Py_XDECREF(value);
     Py_XDECREF(result);
     return NULL;
@@ -5457,20 +5752,22 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
     tp = state->Module_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_stmt_seq* body;
         asdl_type_ignore_seq* type_ignores;
 
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from Module");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -5499,14 +5796,16 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_ignores, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_ignores, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"type_ignores\" missing from Module");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -5542,19 +5841,21 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
     tp = state->Interactive_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_stmt_seq* body;
 
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from Interactive");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -5590,17 +5891,17 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
     tp = state->Expression_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty body;
 
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from Expression");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -5619,20 +5920,22 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
     tp = state->FunctionType_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* argtypes;
         expr_ty returns;
 
-        if (_PyObject_LookupAttr(obj, state->argtypes, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->argtypes, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"argtypes\" missing from FunctionType");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -5661,12 +5964,12 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->returns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->returns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"returns\" missing from FunctionType");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -5686,7 +5989,7 @@ obj2ast_mod(struct ast_state *state, PyObject* obj, mod_ty* out, PyArena* arena)
     PyErr_Format(PyExc_TypeError, "expected some sort of mod, but got %R", obj);
     failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -5706,12 +6009,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         *out = NULL;
         return 0;
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from stmt");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -5723,12 +6026,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from stmt");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -5740,8 +6043,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -5757,8 +6060,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -5777,7 +6080,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->FunctionDef_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         identifier name;
@@ -5786,13 +6089,14 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_expr_seq* decorator_list;
         expr_ty returns;
         string type_comment;
+        asdl_type_param_seq* type_params;
 
-        if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from FunctionDef");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -5804,12 +6108,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->args, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->args, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"args\" missing from FunctionDef");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -5821,14 +6125,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from FunctionDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -5857,14 +6163,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->decorator_list, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->decorator_list, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"decorator_list\" missing from FunctionDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -5893,8 +6201,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->returns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->returns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -5910,8 +6218,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -5927,16 +6235,55 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
+        if (PyObject_GetOptionalAttr(obj, state->type_params, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
+        }
+        {
+            int res;
+            Py_ssize_t len;
+            Py_ssize_t i;
+            if (!PyList_Check(tmp)) {
+                PyErr_Format(PyExc_TypeError, "FunctionDef field \"type_params\" must be a list, not a %.200s", _PyType_Name(Py_TYPE(tmp)));
+                goto failed;
+            }
+            len = PyList_GET_SIZE(tmp);
+            type_params = _Py_asdl_type_param_seq_new(len, arena);
+            if (type_params == NULL) goto failed;
+            for (i = 0; i < len; i++) {
+                type_param_ty val;
+                PyObject *tmp2 = Py_NewRef(PyList_GET_ITEM(tmp, i));
+                if (_Py_EnterRecursiveCall(" while traversing 'FunctionDef' node")) {
+                    goto failed;
+                }
+                res = obj2ast_type_param(state, tmp2, &val, arena);
+                _Py_LeaveRecursiveCall();
+                Py_DECREF(tmp2);
+                if (res != 0) goto failed;
+                if (len != PyList_GET_SIZE(tmp)) {
+                    PyErr_SetString(PyExc_RuntimeError, "FunctionDef field \"type_params\" changed size during iteration");
+                    goto failed;
+                }
+                asdl_seq_SET(type_params, i, val);
+            }
+            Py_CLEAR(tmp);
+        }
         *out = _PyAST_FunctionDef(name, args, body, decorator_list, returns,
-                                  type_comment, lineno, col_offset, end_lineno,
-                                  end_col_offset, arena);
+                                  type_comment, type_params, lineno,
+                                  col_offset, end_lineno, end_col_offset,
+                                  arena);
         if (*out == NULL) goto failed;
         return 0;
     }
     tp = state->AsyncFunctionDef_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         identifier name;
@@ -5945,13 +6292,14 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_expr_seq* decorator_list;
         expr_ty returns;
         string type_comment;
+        asdl_type_param_seq* type_params;
 
-        if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from AsyncFunctionDef");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -5963,12 +6311,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->args, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->args, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"args\" missing from AsyncFunctionDef");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -5980,14 +6328,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from AsyncFunctionDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6016,14 +6366,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->decorator_list, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->decorator_list, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"decorator_list\" missing from AsyncFunctionDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6052,8 +6404,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->returns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->returns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6069,8 +6421,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6086,17 +6438,55 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
+        if (PyObject_GetOptionalAttr(obj, state->type_params, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
+        }
+        {
+            int res;
+            Py_ssize_t len;
+            Py_ssize_t i;
+            if (!PyList_Check(tmp)) {
+                PyErr_Format(PyExc_TypeError, "AsyncFunctionDef field \"type_params\" must be a list, not a %.200s", _PyType_Name(Py_TYPE(tmp)));
+                goto failed;
+            }
+            len = PyList_GET_SIZE(tmp);
+            type_params = _Py_asdl_type_param_seq_new(len, arena);
+            if (type_params == NULL) goto failed;
+            for (i = 0; i < len; i++) {
+                type_param_ty val;
+                PyObject *tmp2 = Py_NewRef(PyList_GET_ITEM(tmp, i));
+                if (_Py_EnterRecursiveCall(" while traversing 'AsyncFunctionDef' node")) {
+                    goto failed;
+                }
+                res = obj2ast_type_param(state, tmp2, &val, arena);
+                _Py_LeaveRecursiveCall();
+                Py_DECREF(tmp2);
+                if (res != 0) goto failed;
+                if (len != PyList_GET_SIZE(tmp)) {
+                    PyErr_SetString(PyExc_RuntimeError, "AsyncFunctionDef field \"type_params\" changed size during iteration");
+                    goto failed;
+                }
+                asdl_seq_SET(type_params, i, val);
+            }
+            Py_CLEAR(tmp);
+        }
         *out = _PyAST_AsyncFunctionDef(name, args, body, decorator_list,
-                                       returns, type_comment, lineno,
-                                       col_offset, end_lineno, end_col_offset,
-                                       arena);
+                                       returns, type_comment, type_params,
+                                       lineno, col_offset, end_lineno,
+                                       end_col_offset, arena);
         if (*out == NULL) goto failed;
         return 0;
     }
     tp = state->ClassDef_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         identifier name;
@@ -6104,13 +6494,14 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_keyword_seq* keywords;
         asdl_stmt_seq* body;
         asdl_expr_seq* decorator_list;
+        asdl_type_param_seq* type_params;
 
-        if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from ClassDef");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6122,14 +6513,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->bases, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->bases, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"bases\" missing from ClassDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6158,14 +6551,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->keywords, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->keywords, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"keywords\" missing from ClassDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6194,14 +6589,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from ClassDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6230,14 +6627,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->decorator_list, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->decorator_list, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"decorator_list\" missing from ClassDef");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6266,22 +6665,60 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
+        if (PyObject_GetOptionalAttr(obj, state->type_params, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
+        }
+        {
+            int res;
+            Py_ssize_t len;
+            Py_ssize_t i;
+            if (!PyList_Check(tmp)) {
+                PyErr_Format(PyExc_TypeError, "ClassDef field \"type_params\" must be a list, not a %.200s", _PyType_Name(Py_TYPE(tmp)));
+                goto failed;
+            }
+            len = PyList_GET_SIZE(tmp);
+            type_params = _Py_asdl_type_param_seq_new(len, arena);
+            if (type_params == NULL) goto failed;
+            for (i = 0; i < len; i++) {
+                type_param_ty val;
+                PyObject *tmp2 = Py_NewRef(PyList_GET_ITEM(tmp, i));
+                if (_Py_EnterRecursiveCall(" while traversing 'ClassDef' node")) {
+                    goto failed;
+                }
+                res = obj2ast_type_param(state, tmp2, &val, arena);
+                _Py_LeaveRecursiveCall();
+                Py_DECREF(tmp2);
+                if (res != 0) goto failed;
+                if (len != PyList_GET_SIZE(tmp)) {
+                    PyErr_SetString(PyExc_RuntimeError, "ClassDef field \"type_params\" changed size during iteration");
+                    goto failed;
+                }
+                asdl_seq_SET(type_params, i, val);
+            }
+            Py_CLEAR(tmp);
+        }
         *out = _PyAST_ClassDef(name, bases, keywords, body, decorator_list,
-                               lineno, col_offset, end_lineno, end_col_offset,
-                               arena);
+                               type_params, lineno, col_offset, end_lineno,
+                               end_col_offset, arena);
         if (*out == NULL) goto failed;
         return 0;
     }
     tp = state->Return_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6305,19 +6742,21 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Delete_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* targets;
 
-        if (_PyObject_LookupAttr(obj, state->targets, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->targets, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"targets\" missing from Delete");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6354,21 +6793,23 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Assign_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* targets;
         expr_ty value;
         string type_comment;
 
-        if (_PyObject_LookupAttr(obj, state->targets, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->targets, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"targets\" missing from Assign");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6397,12 +6838,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Assign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6414,8 +6855,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6436,22 +6877,109 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         if (*out == NULL) goto failed;
         return 0;
     }
+    tp = state->TypeAlias_type;
+    isinstance = PyObject_IsInstance(obj, tp);
+    if (isinstance == -1) {
+        return -1;
+    }
+    if (isinstance) {
+        expr_ty name;
+        asdl_type_param_seq* type_params;
+        expr_ty value;
+
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from TypeAlias");
+            return -1;
+        }
+        else {
+            int res;
+            if (_Py_EnterRecursiveCall(" while traversing 'TypeAlias' node")) {
+                goto failed;
+            }
+            res = obj2ast_expr(state, tmp, &name, arena);
+            _Py_LeaveRecursiveCall();
+            if (res != 0) goto failed;
+            Py_CLEAR(tmp);
+        }
+        if (PyObject_GetOptionalAttr(obj, state->type_params, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
+        }
+        {
+            int res;
+            Py_ssize_t len;
+            Py_ssize_t i;
+            if (!PyList_Check(tmp)) {
+                PyErr_Format(PyExc_TypeError, "TypeAlias field \"type_params\" must be a list, not a %.200s", _PyType_Name(Py_TYPE(tmp)));
+                goto failed;
+            }
+            len = PyList_GET_SIZE(tmp);
+            type_params = _Py_asdl_type_param_seq_new(len, arena);
+            if (type_params == NULL) goto failed;
+            for (i = 0; i < len; i++) {
+                type_param_ty val;
+                PyObject *tmp2 = Py_NewRef(PyList_GET_ITEM(tmp, i));
+                if (_Py_EnterRecursiveCall(" while traversing 'TypeAlias' node")) {
+                    goto failed;
+                }
+                res = obj2ast_type_param(state, tmp2, &val, arena);
+                _Py_LeaveRecursiveCall();
+                Py_DECREF(tmp2);
+                if (res != 0) goto failed;
+                if (len != PyList_GET_SIZE(tmp)) {
+                    PyErr_SetString(PyExc_RuntimeError, "TypeAlias field \"type_params\" changed size during iteration");
+                    goto failed;
+                }
+                asdl_seq_SET(type_params, i, val);
+            }
+            Py_CLEAR(tmp);
+        }
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from TypeAlias");
+            return -1;
+        }
+        else {
+            int res;
+            if (_Py_EnterRecursiveCall(" while traversing 'TypeAlias' node")) {
+                goto failed;
+            }
+            res = obj2ast_expr(state, tmp, &value, arena);
+            _Py_LeaveRecursiveCall();
+            if (res != 0) goto failed;
+            Py_CLEAR(tmp);
+        }
+        *out = _PyAST_TypeAlias(name, type_params, value, lineno, col_offset,
+                                end_lineno, end_col_offset, arena);
+        if (*out == NULL) goto failed;
+        return 0;
+    }
     tp = state->AugAssign_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty target;
         operator_ty op;
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->target, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->target, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"target\" missing from AugAssign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6463,12 +6991,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->op, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->op, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"op\" missing from AugAssign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6480,12 +7008,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from AugAssign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6505,7 +7033,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->AnnAssign_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty target;
@@ -6513,12 +7041,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         expr_ty value;
         int simple;
 
-        if (_PyObject_LookupAttr(obj, state->target, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->target, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"target\" missing from AnnAssign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6530,12 +7058,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->annotation, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->annotation, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"annotation\" missing from AnnAssign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6547,8 +7075,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6564,12 +7092,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->simple, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->simple, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"simple\" missing from AnnAssign");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6589,7 +7117,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->For_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty target;
@@ -6598,12 +7126,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_stmt_seq* orelse;
         string type_comment;
 
-        if (_PyObject_LookupAttr(obj, state->target, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->target, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"target\" missing from For");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6615,12 +7143,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->iter, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->iter, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"iter\" missing from For");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6632,14 +7160,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from For");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6668,14 +7198,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from For");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6704,8 +7236,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6729,7 +7261,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->AsyncFor_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty target;
@@ -6738,12 +7270,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_stmt_seq* orelse;
         string type_comment;
 
-        if (_PyObject_LookupAttr(obj, state->target, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->target, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"target\" missing from AsyncFor");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6755,12 +7287,12 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->iter, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->iter, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"iter\" missing from AsyncFor");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6772,14 +7304,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from AsyncFor");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6808,14 +7342,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from AsyncFor");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6844,8 +7380,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -6870,19 +7406,19 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->While_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty test;
         asdl_stmt_seq* body;
         asdl_stmt_seq* orelse;
 
-        if (_PyObject_LookupAttr(obj, state->test, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->test, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"test\" missing from While");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6894,14 +7430,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from While");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6930,14 +7468,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from While");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -6974,19 +7514,19 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->If_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty test;
         asdl_stmt_seq* body;
         asdl_stmt_seq* orelse;
 
-        if (_PyObject_LookupAttr(obj, state->test, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->test, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"test\" missing from If");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -6998,14 +7538,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from If");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7034,14 +7576,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from If");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7078,21 +7622,23 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->With_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_withitem_seq* items;
         asdl_stmt_seq* body;
         string type_comment;
 
-        if (_PyObject_LookupAttr(obj, state->items, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->items, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"items\" missing from With");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7121,14 +7667,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from With");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7157,8 +7705,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7182,21 +7730,23 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->AsyncWith_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_withitem_seq* items;
         asdl_stmt_seq* body;
         string type_comment;
 
-        if (_PyObject_LookupAttr(obj, state->items, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->items, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"items\" missing from AsyncWith");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7225,14 +7775,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from AsyncWith");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7261,8 +7813,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7286,18 +7838,18 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Match_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty subject;
         asdl_match_case_seq* cases;
 
-        if (_PyObject_LookupAttr(obj, state->subject, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->subject, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"subject\" missing from Match");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -7309,14 +7861,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->cases, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->cases, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"cases\" missing from Match");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7353,14 +7907,14 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Raise_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty exc;
         expr_ty cause;
 
-        if (_PyObject_LookupAttr(obj, state->exc, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->exc, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7376,8 +7930,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->cause, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->cause, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7401,7 +7955,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Try_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_stmt_seq* body;
@@ -7409,14 +7963,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_stmt_seq* orelse;
         asdl_stmt_seq* finalbody;
 
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from Try");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7445,14 +8001,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->handlers, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->handlers, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"handlers\" missing from Try");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7481,14 +8039,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from Try");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7517,14 +8077,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->finalbody, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->finalbody, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"finalbody\" missing from Try");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7561,7 +8123,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->TryStar_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_stmt_seq* body;
@@ -7569,14 +8131,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
         asdl_stmt_seq* orelse;
         asdl_stmt_seq* finalbody;
 
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from TryStar");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7605,14 +8169,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->handlers, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->handlers, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"handlers\" missing from TryStar");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7641,14 +8207,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from TryStar");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7677,14 +8245,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->finalbody, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->finalbody, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"finalbody\" missing from TryStar");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7721,18 +8291,18 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Assert_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty test;
         expr_ty msg;
 
-        if (_PyObject_LookupAttr(obj, state->test, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->test, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"test\" missing from Assert");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -7744,8 +8314,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->msg, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->msg, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7769,19 +8339,21 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Import_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_alias_seq* names;
 
-        if (_PyObject_LookupAttr(obj, state->names, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->names, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"names\" missing from Import");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7818,15 +8390,15 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->ImportFrom_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         identifier module;
         asdl_alias_seq* names;
         int level;
 
-        if (_PyObject_LookupAttr(obj, state->module, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->module, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7842,14 +8414,16 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->names, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->names, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"names\" missing from ImportFrom");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7878,8 +8452,8 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->level, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->level, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -7903,19 +8477,21 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Global_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_identifier_seq* names;
 
-        if (_PyObject_LookupAttr(obj, state->names, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->names, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"names\" missing from Global");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -7952,19 +8528,21 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Nonlocal_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_identifier_seq* names;
 
-        if (_PyObject_LookupAttr(obj, state->names, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->names, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"names\" missing from Nonlocal");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8001,17 +8579,17 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Expr_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Expr");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8031,7 +8609,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Pass_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
 
@@ -8043,7 +8621,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Break_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
 
@@ -8055,7 +8633,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     tp = state->Continue_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
 
@@ -8068,7 +8646,7 @@ obj2ast_stmt(struct ast_state *state, PyObject* obj, stmt_ty* out, PyArena*
     PyErr_Format(PyExc_TypeError, "expected some sort of stmt, but got %R", obj);
     failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -8088,12 +8666,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
         *out = NULL;
         return 0;
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from expr");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -8105,12 +8683,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from expr");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -8122,8 +8700,8 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -8139,8 +8717,8 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -8159,18 +8737,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->BoolOp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         boolop_ty op;
         asdl_expr_seq* values;
 
-        if (_PyObject_LookupAttr(obj, state->op, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->op, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"op\" missing from BoolOp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8182,14 +8760,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->values, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->values, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"values\" missing from BoolOp");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8226,18 +8806,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->NamedExpr_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty target;
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->target, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->target, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"target\" missing from NamedExpr");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8249,12 +8829,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from NamedExpr");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8274,19 +8854,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->BinOp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty left;
         operator_ty op;
         expr_ty right;
 
-        if (_PyObject_LookupAttr(obj, state->left, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->left, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"left\" missing from BinOp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8298,12 +8878,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->op, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->op, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"op\" missing from BinOp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8315,12 +8895,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->right, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->right, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"right\" missing from BinOp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8340,18 +8920,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->UnaryOp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         unaryop_ty op;
         expr_ty operand;
 
-        if (_PyObject_LookupAttr(obj, state->op, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->op, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"op\" missing from UnaryOp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8363,12 +8943,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->operand, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->operand, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"operand\" missing from UnaryOp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8388,18 +8968,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Lambda_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         arguments_ty args;
         expr_ty body;
 
-        if (_PyObject_LookupAttr(obj, state->args, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->args, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"args\" missing from Lambda");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8411,12 +8991,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from Lambda");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8436,19 +9016,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->IfExp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty test;
         expr_ty body;
         expr_ty orelse;
 
-        if (_PyObject_LookupAttr(obj, state->test, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->test, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"test\" missing from IfExp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8460,12 +9040,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from IfExp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8477,12 +9057,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->orelse, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->orelse, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"orelse\" missing from IfExp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8502,20 +9082,22 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Dict_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* keys;
         asdl_expr_seq* values;
 
-        if (_PyObject_LookupAttr(obj, state->keys, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->keys, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"keys\" missing from Dict");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8544,14 +9126,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->values, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->values, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"values\" missing from Dict");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8588,19 +9172,21 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Set_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* elts;
 
-        if (_PyObject_LookupAttr(obj, state->elts, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->elts, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"elts\" missing from Set");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8637,18 +9223,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->ListComp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty elt;
         asdl_comprehension_seq* generators;
 
-        if (_PyObject_LookupAttr(obj, state->elt, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->elt, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"elt\" missing from ListComp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8660,14 +9246,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->generators, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->generators, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"generators\" missing from ListComp");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8704,18 +9292,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->SetComp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty elt;
         asdl_comprehension_seq* generators;
 
-        if (_PyObject_LookupAttr(obj, state->elt, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->elt, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"elt\" missing from SetComp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8727,14 +9315,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->generators, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->generators, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"generators\" missing from SetComp");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8771,19 +9361,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->DictComp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty key;
         expr_ty value;
         asdl_comprehension_seq* generators;
 
-        if (_PyObject_LookupAttr(obj, state->key, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->key, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"key\" missing from DictComp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8795,12 +9385,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from DictComp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8812,14 +9402,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->generators, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->generators, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"generators\" missing from DictComp");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8856,18 +9448,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->GeneratorExp_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty elt;
         asdl_comprehension_seq* generators;
 
-        if (_PyObject_LookupAttr(obj, state->elt, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->elt, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"elt\" missing from GeneratorExp");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8879,14 +9471,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->generators, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->generators, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"generators\" missing from GeneratorExp");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -8923,17 +9517,17 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Await_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Await");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -8953,13 +9547,13 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Yield_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -8983,17 +9577,17 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->YieldFrom_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from YieldFrom");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9013,19 +9607,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Compare_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty left;
         asdl_int_seq* ops;
         asdl_expr_seq* comparators;
 
-        if (_PyObject_LookupAttr(obj, state->left, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->left, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"left\" missing from Compare");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9037,14 +9631,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ops, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ops, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"ops\" missing from Compare");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9073,14 +9669,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->comparators, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->comparators, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"comparators\" missing from Compare");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9117,19 +9715,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Call_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty func;
         asdl_expr_seq* args;
         asdl_keyword_seq* keywords;
 
-        if (_PyObject_LookupAttr(obj, state->func, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->func, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"func\" missing from Call");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9141,14 +9739,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->args, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->args, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"args\" missing from Call");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9177,14 +9777,16 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->keywords, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->keywords, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"keywords\" missing from Call");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9221,19 +9823,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->FormattedValue_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
         int conversion;
         expr_ty format_spec;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from FormattedValue");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9245,12 +9847,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->conversion, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->conversion, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"conversion\" missing from FormattedValue");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9262,8 +9864,8 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->format_spec, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->format_spec, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -9288,19 +9890,21 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->JoinedStr_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* values;
 
-        if (_PyObject_LookupAttr(obj, state->values, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->values, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"values\" missing from JoinedStr");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9337,18 +9941,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Constant_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         constant value;
         string kind;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Constant");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9360,8 +9964,8 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->kind, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->kind, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -9385,19 +9989,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Attribute_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
         identifier attr;
         expr_context_ty ctx;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Attribute");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9409,12 +10013,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->attr, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->attr, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"attr\" missing from Attribute");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9426,12 +10030,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ctx, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ctx, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"ctx\" missing from Attribute");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9451,19 +10055,19 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Subscript_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
         expr_ty slice;
         expr_context_ty ctx;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Subscript");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9475,12 +10079,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->slice, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->slice, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"slice\" missing from Subscript");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9492,12 +10096,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ctx, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ctx, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"ctx\" missing from Subscript");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9517,18 +10121,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Starred_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
         expr_context_ty ctx;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from Starred");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9540,12 +10144,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ctx, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ctx, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"ctx\" missing from Starred");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9565,18 +10169,18 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Name_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         identifier id;
         expr_context_ty ctx;
 
-        if (_PyObject_LookupAttr(obj, state->id, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->id, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"id\" missing from Name");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9588,12 +10192,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ctx, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ctx, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"ctx\" missing from Name");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9613,20 +10217,22 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->List_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* elts;
         expr_context_ty ctx;
 
-        if (_PyObject_LookupAttr(obj, state->elts, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->elts, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"elts\" missing from List");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9655,12 +10261,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ctx, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ctx, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"ctx\" missing from List");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9680,20 +10286,22 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Tuple_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* elts;
         expr_context_ty ctx;
 
-        if (_PyObject_LookupAttr(obj, state->elts, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->elts, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"elts\" missing from Tuple");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -9722,12 +10330,12 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->ctx, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->ctx, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"ctx\" missing from Tuple");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -9747,15 +10355,15 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     tp = state->Slice_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty lower;
         expr_ty upper;
         expr_ty step;
 
-        if (_PyObject_LookupAttr(obj, state->lower, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->lower, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -9771,8 +10379,8 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->upper, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->upper, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -9788,8 +10396,8 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->step, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->step, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -9814,7 +10422,7 @@ obj2ast_expr(struct ast_state *state, PyObject* obj, expr_ty* out, PyArena*
     PyErr_Format(PyExc_TypeError, "expected some sort of expr, but got %R", obj);
     failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -9825,7 +10433,7 @@ obj2ast_expr_context(struct ast_state *state, PyObject* obj, expr_context_ty*
 
     isinstance = PyObject_IsInstance(obj, state->Load_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Load;
@@ -9833,7 +10441,7 @@ obj2ast_expr_context(struct ast_state *state, PyObject* obj, expr_context_ty*
     }
     isinstance = PyObject_IsInstance(obj, state->Store_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Store;
@@ -9841,7 +10449,7 @@ obj2ast_expr_context(struct ast_state *state, PyObject* obj, expr_context_ty*
     }
     isinstance = PyObject_IsInstance(obj, state->Del_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Del;
@@ -9849,7 +10457,7 @@ obj2ast_expr_context(struct ast_state *state, PyObject* obj, expr_context_ty*
     }
 
     PyErr_Format(PyExc_TypeError, "expected some sort of expr_context, but got %R", obj);
-    return 1;
+    return -1;
 }
 
 int
@@ -9860,7 +10468,7 @@ obj2ast_boolop(struct ast_state *state, PyObject* obj, boolop_ty* out, PyArena*
 
     isinstance = PyObject_IsInstance(obj, state->And_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = And;
@@ -9868,7 +10476,7 @@ obj2ast_boolop(struct ast_state *state, PyObject* obj, boolop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->Or_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Or;
@@ -9876,7 +10484,7 @@ obj2ast_boolop(struct ast_state *state, PyObject* obj, boolop_ty* out, PyArena*
     }
 
     PyErr_Format(PyExc_TypeError, "expected some sort of boolop, but got %R", obj);
-    return 1;
+    return -1;
 }
 
 int
@@ -9887,7 +10495,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
 
     isinstance = PyObject_IsInstance(obj, state->Add_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Add;
@@ -9895,7 +10503,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->Sub_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Sub;
@@ -9903,7 +10511,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->Mult_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Mult;
@@ -9911,7 +10519,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->MatMult_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = MatMult;
@@ -9919,7 +10527,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->Div_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Div;
@@ -9927,7 +10535,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->Mod_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Mod;
@@ -9935,7 +10543,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->Pow_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Pow;
@@ -9943,7 +10551,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->LShift_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = LShift;
@@ -9951,7 +10559,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->RShift_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = RShift;
@@ -9959,7 +10567,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->BitOr_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = BitOr;
@@ -9967,7 +10575,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->BitXor_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = BitXor;
@@ -9975,7 +10583,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->BitAnd_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = BitAnd;
@@ -9983,7 +10591,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->FloorDiv_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = FloorDiv;
@@ -9991,7 +10599,7 @@ obj2ast_operator(struct ast_state *state, PyObject* obj, operator_ty* out,
     }
 
     PyErr_Format(PyExc_TypeError, "expected some sort of operator, but got %R", obj);
-    return 1;
+    return -1;
 }
 
 int
@@ -10002,7 +10610,7 @@ obj2ast_unaryop(struct ast_state *state, PyObject* obj, unaryop_ty* out,
 
     isinstance = PyObject_IsInstance(obj, state->Invert_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Invert;
@@ -10010,7 +10618,7 @@ obj2ast_unaryop(struct ast_state *state, PyObject* obj, unaryop_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->Not_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Not;
@@ -10018,7 +10626,7 @@ obj2ast_unaryop(struct ast_state *state, PyObject* obj, unaryop_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->UAdd_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = UAdd;
@@ -10026,7 +10634,7 @@ obj2ast_unaryop(struct ast_state *state, PyObject* obj, unaryop_ty* out,
     }
     isinstance = PyObject_IsInstance(obj, state->USub_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = USub;
@@ -10034,7 +10642,7 @@ obj2ast_unaryop(struct ast_state *state, PyObject* obj, unaryop_ty* out,
     }
 
     PyErr_Format(PyExc_TypeError, "expected some sort of unaryop, but got %R", obj);
-    return 1;
+    return -1;
 }
 
 int
@@ -10045,7 +10653,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
 
     isinstance = PyObject_IsInstance(obj, state->Eq_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Eq;
@@ -10053,7 +10661,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->NotEq_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = NotEq;
@@ -10061,7 +10669,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->Lt_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Lt;
@@ -10069,7 +10677,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->LtE_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = LtE;
@@ -10077,7 +10685,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->Gt_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Gt;
@@ -10085,7 +10693,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->GtE_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = GtE;
@@ -10093,7 +10701,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->Is_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = Is;
@@ -10101,7 +10709,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->IsNot_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = IsNot;
@@ -10109,7 +10717,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->In_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = In;
@@ -10117,7 +10725,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
     isinstance = PyObject_IsInstance(obj, state->NotIn_type);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         *out = NotIn;
@@ -10125,7 +10733,7 @@ obj2ast_cmpop(struct ast_state *state, PyObject* obj, cmpop_ty* out, PyArena*
     }
 
     PyErr_Format(PyExc_TypeError, "expected some sort of cmpop, but got %R", obj);
-    return 1;
+    return -1;
 }
 
 int
@@ -10138,12 +10746,12 @@ obj2ast_comprehension(struct ast_state *state, PyObject* obj, comprehension_ty*
     asdl_expr_seq* ifs;
     int is_async;
 
-    if (_PyObject_LookupAttr(obj, state->target, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->target, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"target\" missing from comprehension");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10155,12 +10763,12 @@ obj2ast_comprehension(struct ast_state *state, PyObject* obj, comprehension_ty*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->iter, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->iter, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"iter\" missing from comprehension");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10172,14 +10780,16 @@ obj2ast_comprehension(struct ast_state *state, PyObject* obj, comprehension_ty*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->ifs, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->ifs, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"ifs\" missing from comprehension");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -10208,12 +10818,12 @@ obj2ast_comprehension(struct ast_state *state, PyObject* obj, comprehension_ty*
         }
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->is_async, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->is_async, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"is_async\" missing from comprehension");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10226,10 +10836,11 @@ obj2ast_comprehension(struct ast_state *state, PyObject* obj, comprehension_ty*
         Py_CLEAR(tmp);
     }
     *out = _PyAST_comprehension(target, iter, ifs, is_async, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -10249,12 +10860,12 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
         *out = NULL;
         return 0;
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from excepthandler");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10266,12 +10877,12 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from excepthandler");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10283,8 +10894,8 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10300,8 +10911,8 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10320,15 +10931,15 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
     tp = state->ExceptHandler_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty type;
         identifier name;
         asdl_stmt_seq* body;
 
-        if (_PyObject_LookupAttr(obj, state->type, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->type, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -10344,8 +10955,8 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -10361,14 +10972,16 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from ExceptHandler");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -10406,7 +11019,7 @@ obj2ast_excepthandler(struct ast_state *state, PyObject* obj, excepthandler_ty*
     PyErr_Format(PyExc_TypeError, "expected some sort of excepthandler, but got %R", obj);
     failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -10422,14 +11035,16 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
     arg_ty kwarg;
     asdl_expr_seq* defaults;
 
-    if (_PyObject_LookupAttr(obj, state->posonlyargs, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->posonlyargs, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"posonlyargs\" missing from arguments");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -10458,14 +11073,16 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
         }
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->args, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->args, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"args\" missing from arguments");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -10494,8 +11111,8 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
         }
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->vararg, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->vararg, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10511,14 +11128,16 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->kwonlyargs, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->kwonlyargs, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"kwonlyargs\" missing from arguments");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -10547,14 +11166,16 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
         }
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->kw_defaults, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->kw_defaults, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"kw_defaults\" missing from arguments");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -10583,8 +11204,8 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
         }
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->kwarg, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->kwarg, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10600,14 +11221,16 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->defaults, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->defaults, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"defaults\" missing from arguments");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -10638,10 +11261,11 @@ obj2ast_arguments(struct ast_state *state, PyObject* obj, arguments_ty* out,
     }
     *out = _PyAST_arguments(posonlyargs, args, vararg, kwonlyargs, kw_defaults,
                             kwarg, defaults, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -10656,12 +11280,12 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
     int end_lineno;
     int end_col_offset;
 
-    if (_PyObject_LookupAttr(obj, state->arg, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->arg, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"arg\" missing from arg");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10673,8 +11297,8 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->annotation, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->annotation, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10690,8 +11314,8 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->type_comment, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->type_comment, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10707,12 +11331,12 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from arg");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10724,12 +11348,12 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from arg");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10741,8 +11365,8 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10758,8 +11382,8 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10777,10 +11401,11 @@ obj2ast_arg(struct ast_state *state, PyObject* obj, arg_ty* out, PyArena* arena)
     }
     *out = _PyAST_arg(arg, annotation, type_comment, lineno, col_offset,
                       end_lineno, end_col_offset, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -10795,8 +11420,8 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
     int end_lineno;
     int end_col_offset;
 
-    if (_PyObject_LookupAttr(obj, state->arg, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->arg, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10812,12 +11437,12 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from keyword");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10829,12 +11454,12 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from keyword");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10846,12 +11471,12 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from keyword");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10863,8 +11488,8 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10880,8 +11505,8 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10899,10 +11524,11 @@ obj2ast_keyword(struct ast_state *state, PyObject* obj, keyword_ty* out,
     }
     *out = _PyAST_keyword(arg, value, lineno, col_offset, end_lineno,
                           end_col_offset, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -10917,12 +11543,12 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
     int end_lineno;
     int end_col_offset;
 
-    if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from alias");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10934,8 +11560,8 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->asname, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->asname, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -10951,12 +11577,12 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from alias");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10968,12 +11594,12 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from alias");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -10985,8 +11611,8 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -11002,8 +11628,8 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -11021,10 +11647,11 @@ obj2ast_alias(struct ast_state *state, PyObject* obj, alias_ty* out, PyArena*
     }
     *out = _PyAST_alias(name, asname, lineno, col_offset, end_lineno,
                         end_col_offset, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -11035,12 +11662,12 @@ obj2ast_withitem(struct ast_state *state, PyObject* obj, withitem_ty* out,
     expr_ty context_expr;
     expr_ty optional_vars;
 
-    if (_PyObject_LookupAttr(obj, state->context_expr, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->context_expr, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"context_expr\" missing from withitem");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -11052,8 +11679,8 @@ obj2ast_withitem(struct ast_state *state, PyObject* obj, withitem_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->optional_vars, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->optional_vars, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -11070,10 +11697,11 @@ obj2ast_withitem(struct ast_state *state, PyObject* obj, withitem_ty* out,
         Py_CLEAR(tmp);
     }
     *out = _PyAST_withitem(context_expr, optional_vars, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -11085,12 +11713,12 @@ obj2ast_match_case(struct ast_state *state, PyObject* obj, match_case_ty* out,
     expr_ty guard;
     asdl_stmt_seq* body;
 
-    if (_PyObject_LookupAttr(obj, state->pattern, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->pattern, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"pattern\" missing from match_case");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -11102,8 +11730,8 @@ obj2ast_match_case(struct ast_state *state, PyObject* obj, match_case_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->guard, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->guard, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL || tmp == Py_None) {
         Py_CLEAR(tmp);
@@ -11119,14 +11747,16 @@ obj2ast_match_case(struct ast_state *state, PyObject* obj, match_case_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->body, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->body, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
-        PyErr_SetString(PyExc_TypeError, "required field \"body\" missing from match_case");
-        return 1;
+        tmp = PyList_New(0);
+        if (tmp == NULL) {
+            return -1;
+        }
     }
-    else {
+    {
         int res;
         Py_ssize_t len;
         Py_ssize_t i;
@@ -11156,10 +11786,11 @@ obj2ast_match_case(struct ast_state *state, PyObject* obj, match_case_ty* out,
         Py_CLEAR(tmp);
     }
     *out = _PyAST_match_case(pattern, guard, body, arena);
+    if (*out == NULL) goto failed;
     return 0;
 failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -11179,12 +11810,12 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
         *out = NULL;
         return 0;
     }
-    if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from pattern");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -11196,12 +11827,12 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from pattern");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -11213,12 +11844,12 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"end_lineno\" missing from pattern");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -11230,12 +11861,12 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
         if (res != 0) goto failed;
         Py_CLEAR(tmp);
     }
-    if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
-        return 1;
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
     }
     if (tmp == NULL) {
         PyErr_SetString(PyExc_TypeError, "required field \"end_col_offset\" missing from pattern");
-        return 1;
+        return -1;
     }
     else {
         int res;
@@ -11250,17 +11881,17 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchValue_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from MatchValue");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -11280,17 +11911,17 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchSingleton_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         constant value;
 
-        if (_PyObject_LookupAttr(obj, state->value, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->value, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"value\" missing from MatchSingleton");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -11310,19 +11941,21 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchSequence_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_pattern_seq* patterns;
 
-        if (_PyObject_LookupAttr(obj, state->patterns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->patterns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"patterns\" missing from MatchSequence");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11359,21 +11992,23 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchMapping_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_expr_seq* keys;
         asdl_pattern_seq* patterns;
         identifier rest;
 
-        if (_PyObject_LookupAttr(obj, state->keys, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->keys, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"keys\" missing from MatchMapping");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11402,14 +12037,16 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->patterns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->patterns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"patterns\" missing from MatchMapping");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11438,8 +12075,8 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->rest, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->rest, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -11463,7 +12100,7 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchClass_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         expr_ty cls;
@@ -11471,12 +12108,12 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
         asdl_identifier_seq* kwd_attrs;
         asdl_pattern_seq* kwd_patterns;
 
-        if (_PyObject_LookupAttr(obj, state->cls, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->cls, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"cls\" missing from MatchClass");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -11488,14 +12125,16 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->patterns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->patterns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"patterns\" missing from MatchClass");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11524,14 +12163,16 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->kwd_attrs, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->kwd_attrs, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"kwd_attrs\" missing from MatchClass");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11560,14 +12201,16 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
             }
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->kwd_patterns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->kwd_patterns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"kwd_patterns\" missing from MatchClass");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11605,13 +12248,13 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchStar_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         identifier name;
 
-        if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -11635,14 +12278,14 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchAs_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         pattern_ty pattern;
         identifier name;
 
-        if (_PyObject_LookupAttr(obj, state->pattern, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->pattern, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -11658,8 +12301,8 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->name, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL || tmp == Py_None) {
             Py_CLEAR(tmp);
@@ -11683,19 +12326,21 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     tp = state->MatchOr_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         asdl_pattern_seq* patterns;
 
-        if (_PyObject_LookupAttr(obj, state->patterns, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->patterns, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
-            PyErr_SetString(PyExc_TypeError, "required field \"patterns\" missing from MatchOr");
-            return 1;
+            tmp = PyList_New(0);
+            if (tmp == NULL) {
+                return -1;
+            }
         }
-        else {
+        {
             int res;
             Py_ssize_t len;
             Py_ssize_t i;
@@ -11733,7 +12378,7 @@ obj2ast_pattern(struct ast_state *state, PyObject* obj, pattern_ty* out,
     PyErr_Format(PyExc_TypeError, "expected some sort of pattern, but got %R", obj);
     failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
 }
 
 int
@@ -11752,18 +12397,18 @@ obj2ast_type_ignore(struct ast_state *state, PyObject* obj, type_ignore_ty*
     tp = state->TypeIgnore_type;
     isinstance = PyObject_IsInstance(obj, tp);
     if (isinstance == -1) {
-        return 1;
+        return -1;
     }
     if (isinstance) {
         int lineno;
         string tag;
 
-        if (_PyObject_LookupAttr(obj, state->lineno, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from TypeIgnore");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -11775,12 +12420,12 @@ obj2ast_type_ignore(struct ast_state *state, PyObject* obj, type_ignore_ty*
             if (res != 0) goto failed;
             Py_CLEAR(tmp);
         }
-        if (_PyObject_LookupAttr(obj, state->tag, &tmp) < 0) {
-            return 1;
+        if (PyObject_GetOptionalAttr(obj, state->tag, &tmp) < 0) {
+            return -1;
         }
         if (tmp == NULL) {
             PyErr_SetString(PyExc_TypeError, "required field \"tag\" missing from TypeIgnore");
-            return 1;
+            return -1;
         }
         else {
             int res;
@@ -11800,7 +12445,207 @@ obj2ast_type_ignore(struct ast_state *state, PyObject* obj, type_ignore_ty*
     PyErr_Format(PyExc_TypeError, "expected some sort of type_ignore, but got %R", obj);
     failed:
     Py_XDECREF(tmp);
-    return 1;
+    return -1;
+}
+
+int
+obj2ast_type_param(struct ast_state *state, PyObject* obj, type_param_ty* out,
+                   PyArena* arena)
+{
+    int isinstance;
+
+    PyObject *tmp = NULL;
+    PyObject *tp;
+    int lineno;
+    int col_offset;
+    int end_lineno;
+    int end_col_offset;
+
+    if (obj == Py_None) {
+        *out = NULL;
+        return 0;
+    }
+    if (PyObject_GetOptionalAttr(obj, state->lineno, &tmp) < 0) {
+        return -1;
+    }
+    if (tmp == NULL) {
+        PyErr_SetString(PyExc_TypeError, "required field \"lineno\" missing from type_param");
+        return -1;
+    }
+    else {
+        int res;
+        if (_Py_EnterRecursiveCall(" while traversing 'type_param' node")) {
+            goto failed;
+        }
+        res = obj2ast_int(state, tmp, &lineno, arena);
+        _Py_LeaveRecursiveCall();
+        if (res != 0) goto failed;
+        Py_CLEAR(tmp);
+    }
+    if (PyObject_GetOptionalAttr(obj, state->col_offset, &tmp) < 0) {
+        return -1;
+    }
+    if (tmp == NULL) {
+        PyErr_SetString(PyExc_TypeError, "required field \"col_offset\" missing from type_param");
+        return -1;
+    }
+    else {
+        int res;
+        if (_Py_EnterRecursiveCall(" while traversing 'type_param' node")) {
+            goto failed;
+        }
+        res = obj2ast_int(state, tmp, &col_offset, arena);
+        _Py_LeaveRecursiveCall();
+        if (res != 0) goto failed;
+        Py_CLEAR(tmp);
+    }
+    if (PyObject_GetOptionalAttr(obj, state->end_lineno, &tmp) < 0) {
+        return -1;
+    }
+    if (tmp == NULL) {
+        PyErr_SetString(PyExc_TypeError, "required field \"end_lineno\" missing from type_param");
+        return -1;
+    }
+    else {
+        int res;
+        if (_Py_EnterRecursiveCall(" while traversing 'type_param' node")) {
+            goto failed;
+        }
+        res = obj2ast_int(state, tmp, &end_lineno, arena);
+        _Py_LeaveRecursiveCall();
+        if (res != 0) goto failed;
+        Py_CLEAR(tmp);
+    }
+    if (PyObject_GetOptionalAttr(obj, state->end_col_offset, &tmp) < 0) {
+        return -1;
+    }
+    if (tmp == NULL) {
+        PyErr_SetString(PyExc_TypeError, "required field \"end_col_offset\" missing from type_param");
+        return -1;
+    }
+    else {
+        int res;
+        if (_Py_EnterRecursiveCall(" while traversing 'type_param' node")) {
+            goto failed;
+        }
+        res = obj2ast_int(state, tmp, &end_col_offset, arena);
+        _Py_LeaveRecursiveCall();
+        if (res != 0) goto failed;
+        Py_CLEAR(tmp);
+    }
+    tp = state->TypeVar_type;
+    isinstance = PyObject_IsInstance(obj, tp);
+    if (isinstance == -1) {
+        return -1;
+    }
+    if (isinstance) {
+        identifier name;
+        expr_ty bound;
+
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from TypeVar");
+            return -1;
+        }
+        else {
+            int res;
+            if (_Py_EnterRecursiveCall(" while traversing 'TypeVar' node")) {
+                goto failed;
+            }
+            res = obj2ast_identifier(state, tmp, &name, arena);
+            _Py_LeaveRecursiveCall();
+            if (res != 0) goto failed;
+            Py_CLEAR(tmp);
+        }
+        if (PyObject_GetOptionalAttr(obj, state->bound, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL || tmp == Py_None) {
+            Py_CLEAR(tmp);
+            bound = NULL;
+        }
+        else {
+            int res;
+            if (_Py_EnterRecursiveCall(" while traversing 'TypeVar' node")) {
+                goto failed;
+            }
+            res = obj2ast_expr(state, tmp, &bound, arena);
+            _Py_LeaveRecursiveCall();
+            if (res != 0) goto failed;
+            Py_CLEAR(tmp);
+        }
+        *out = _PyAST_TypeVar(name, bound, lineno, col_offset, end_lineno,
+                              end_col_offset, arena);
+        if (*out == NULL) goto failed;
+        return 0;
+    }
+    tp = state->ParamSpec_type;
+    isinstance = PyObject_IsInstance(obj, tp);
+    if (isinstance == -1) {
+        return -1;
+    }
+    if (isinstance) {
+        identifier name;
+
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from ParamSpec");
+            return -1;
+        }
+        else {
+            int res;
+            if (_Py_EnterRecursiveCall(" while traversing 'ParamSpec' node")) {
+                goto failed;
+            }
+            res = obj2ast_identifier(state, tmp, &name, arena);
+            _Py_LeaveRecursiveCall();
+            if (res != 0) goto failed;
+            Py_CLEAR(tmp);
+        }
+        *out = _PyAST_ParamSpec(name, lineno, col_offset, end_lineno,
+                                end_col_offset, arena);
+        if (*out == NULL) goto failed;
+        return 0;
+    }
+    tp = state->TypeVarTuple_type;
+    isinstance = PyObject_IsInstance(obj, tp);
+    if (isinstance == -1) {
+        return -1;
+    }
+    if (isinstance) {
+        identifier name;
+
+        if (PyObject_GetOptionalAttr(obj, state->name, &tmp) < 0) {
+            return -1;
+        }
+        if (tmp == NULL) {
+            PyErr_SetString(PyExc_TypeError, "required field \"name\" missing from TypeVarTuple");
+            return -1;
+        }
+        else {
+            int res;
+            if (_Py_EnterRecursiveCall(" while traversing 'TypeVarTuple' node")) {
+                goto failed;
+            }
+            res = obj2ast_identifier(state, tmp, &name, arena);
+            _Py_LeaveRecursiveCall();
+            if (res != 0) goto failed;
+            Py_CLEAR(tmp);
+        }
+        *out = _PyAST_TypeVarTuple(name, lineno, col_offset, end_lineno,
+                                   end_col_offset, arena);
+        if (*out == NULL) goto failed;
+        return 0;
+    }
+
+    PyErr_Format(PyExc_TypeError, "expected some sort of type_param, but got %R", obj);
+    failed:
+    Py_XDECREF(tmp);
+    return -1;
 }
 
 
@@ -11823,6 +12668,9 @@ astmodule_exec(PyObject *m)
     if (PyModule_AddIntMacro(m, PyCF_TYPE_COMMENTS) < 0) {
         return -1;
     }
+    if (PyModule_AddIntMacro(m, PyCF_OPTIMIZED_AST) < 0) {
+        return -1;
+    }
     if (PyModule_AddObjectRef(m, "mod", state->mod_type) < 0) {
         return -1;
     }
@@ -11861,6 +12709,9 @@ astmodule_exec(PyObject *m)
     if (PyModule_AddObjectRef(m, "Assign", state->Assign_type) < 0) {
         return -1;
     }
+    if (PyModule_AddObjectRef(m, "TypeAlias", state->TypeAlias_type) < 0) {
+        return -1;
+    }
     if (PyModule_AddObjectRef(m, "AugAssign", state->AugAssign_type) < 0) {
         return -1;
     }
@@ -12188,6 +13039,19 @@ astmodule_exec(PyObject *m)
     if (PyModule_AddObjectRef(m, "TypeIgnore", state->TypeIgnore_type) < 0) {
         return -1;
     }
+    if (PyModule_AddObjectRef(m, "type_param", state->type_param_type) < 0) {
+        return -1;
+    }
+    if (PyModule_AddObjectRef(m, "TypeVar", state->TypeVar_type) < 0) {
+        return -1;
+    }
+    if (PyModule_AddObjectRef(m, "ParamSpec", state->ParamSpec_type) < 0) {
+        return -1;
+    }
+    if (PyModule_AddObjectRef(m, "TypeVarTuple", state->TypeVarTuple_type) < 0)
+        {
+        return -1;
+    }
     return 0;
 }
 
@@ -12221,13 +13085,13 @@ PyObject* PyAST_mod2obj(mod_ty t)
 
     int starting_recursion_depth;
     /* Be careful here to prevent overflow. */
-    int COMPILER_STACK_FRAME_SCALE = 3;
+    int COMPILER_STACK_FRAME_SCALE = 2;
     PyThreadState *tstate = _PyThreadState_GET();
     if (!tstate) {
-        return 0;
+        return NULL;
     }
-    state->recursion_limit = C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
-    int recursion_depth = C_RECURSION_LIMIT - tstate->c_recursion_remaining;
+    state->recursion_limit = Py_C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
+    int recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
     starting_recursion_depth = recursion_depth * COMPILER_STACK_FRAME_SCALE;
     state->recursion_depth = starting_recursion_depth;
 
@@ -12238,7 +13102,7 @@ PyObject* PyAST_mod2obj(mod_ty t)
         PyErr_Format(PyExc_SystemError,
             "AST constructor recursion depth mismatch (before=%d, after=%d)",
             starting_recursion_depth, state->recursion_depth);
-        return 0;
+        return NULL;
     }
     return result;
 }
diff --git a/Python/Python-tokenize.c b/Python/Python-tokenize.c
index 3394a5108cb535..364fe55d0a05e4 100644
--- a/Python/Python-tokenize.c
+++ b/Python/Python-tokenize.c
@@ -1,5 +1,9 @@
 #include "Python.h"
-#include "../Parser/tokenizer.h"
+#include "errcode.h"
+#include "../Parser/lexer/state.h"
+#include "../Parser/lexer/lexer.h"
+#include "../Parser/tokenizer/tokenizer.h"
+#include "../Parser/pegen.h"      // _PyPegen_byte_offset_to_character_offset()
 
 static struct PyModuleDef _tokenizemodule;
 
@@ -27,18 +31,24 @@ class _tokenizer.tokenizeriter "tokenizeriterobject *" "_tokenize_get_state_by_t
 typedef struct
 {
     PyObject_HEAD struct tok_state *tok;
+    int done;
 } tokenizeriterobject;
 
 /*[clinic input]
 @classmethod
 _tokenizer.tokenizeriter.__new__ as tokenizeriter_new
 
-    source: str
+    readline: object
+    /
+    *
+    extra_tokens: bool
+    encoding: str(c_default="NULL") = 'utf-8'
 [clinic start generated code]*/
 
 static PyObject *
-tokenizeriter_new_impl(PyTypeObject *type, const char *source)
-/*[clinic end generated code: output=7fd9f46cf9263cbb input=4384b368407375c6]*/
+tokenizeriter_new_impl(PyTypeObject *type, PyObject *readline,
+                       int extra_tokens, const char *encoding)
+/*[clinic end generated code: output=7501a1211683ce16 input=f7dddf8a613ae8bd]*/
 {
     tokenizeriterobject *self = (tokenizeriterobject *)type->tp_alloc(type, 0);
     if (self == NULL) {
@@ -48,26 +58,132 @@ tokenizeriter_new_impl(PyTypeObject *type, const char *source)
     if (filename == NULL) {
         return NULL;
     }
-    self->tok = _PyTokenizer_FromUTF8(source, 1);
+    self->tok = _PyTokenizer_FromReadline(readline, encoding, 1, 1);
     if (self->tok == NULL) {
         Py_DECREF(filename);
         return NULL;
     }
     self->tok->filename = filename;
+    if (extra_tokens) {
+        self->tok->tok_extra_tokens = 1;
+    }
+    self->done = 0;
     return (PyObject *)self;
 }
 
+static int
+_tokenizer_error(struct tok_state *tok)
+{
+    if (PyErr_Occurred()) {
+        return -1;
+    }
+
+    const char *msg = NULL;
+    PyObject* errtype = PyExc_SyntaxError;
+    switch (tok->done) {
+        case E_TOKEN:
+            msg = "invalid token";
+            break;
+        case E_EOF:
+            PyErr_SetString(PyExc_SyntaxError, "unexpected EOF in multi-line statement");
+            PyErr_SyntaxLocationObject(tok->filename, tok->lineno,
+                                       tok->inp - tok->buf < 0 ? 0 : (int)(tok->inp - tok->buf));
+            return -1;
+        case E_DEDENT:
+            msg = "unindent does not match any outer indentation level";
+            errtype = PyExc_IndentationError;
+            break;
+        case E_INTR:
+            if (!PyErr_Occurred()) {
+                PyErr_SetNone(PyExc_KeyboardInterrupt);
+            }
+            return -1;
+        case E_NOMEM:
+            PyErr_NoMemory();
+            return -1;
+        case E_TABSPACE:
+            errtype = PyExc_TabError;
+            msg = "inconsistent use of tabs and spaces in indentation";
+            break;
+        case E_TOODEEP:
+            errtype = PyExc_IndentationError;
+            msg = "too many levels of indentation";
+            break;
+        case E_LINECONT: {
+            msg = "unexpected character after line continuation character";
+            break;
+        }
+        default:
+            msg = "unknown tokenization error";
+    }
+
+    PyObject* errstr = NULL;
+    PyObject* error_line = NULL;
+    PyObject* tmp = NULL;
+    PyObject* value = NULL;
+    int result = 0;
+
+    Py_ssize_t size = tok->inp - tok->buf;
+    assert(tok->buf[size-1] == '\n');
+    size -= 1; // Remove the newline character from the end of the line
+    error_line = PyUnicode_DecodeUTF8(tok->buf, size, "replace");
+    if (!error_line) {
+        result = -1;
+        goto exit;
+    }
+
+    Py_ssize_t offset = _PyPegen_byte_offset_to_character_offset(error_line, tok->inp - tok->buf);
+    if (offset == -1) {
+        result = -1;
+        goto exit;
+    }
+    tmp = Py_BuildValue("(OnnOOO)", tok->filename, tok->lineno, offset, error_line, Py_None, Py_None);
+    if (!tmp) {
+        result = -1;
+        goto exit;
+    }
+
+    errstr = PyUnicode_FromString(msg);
+    if (!errstr) {
+        result = -1;
+        goto exit;
+    }
+
+    value = PyTuple_Pack(2, errstr, tmp);
+    if (!value) {
+        result = -1;
+        goto exit;
+    }
+
+    PyErr_SetObject(errtype, value);
+
+exit:
+    Py_XDECREF(errstr);
+    Py_XDECREF(error_line);
+    Py_XDECREF(tmp);
+    Py_XDECREF(value);
+    return result;
+}
+
 static PyObject *
 tokenizeriter_next(tokenizeriterobject *it)
 {
+    PyObject* result = NULL;
     struct token token;
+    _PyToken_Init(&token);
+
     int type = _PyTokenizer_Get(it->tok, &token);
-    if (type == ERRORTOKEN && PyErr_Occurred()) {
-        return NULL;
+    if (type == ERRORTOKEN) {
+        if(!PyErr_Occurred()) {
+            _tokenizer_error(it->tok);
+            assert(PyErr_Occurred());
+        }
+        goto exit;
     }
-    if (type == ERRORTOKEN || type == ENDMARKER) {
+    if (it->done || type == ERRORTOKEN) {
         PyErr_SetString(PyExc_StopIteration, "EOF");
-        return NULL;
+        it->done = 1;
+        goto exit;
     }
     PyObject *str = NULL;
     if (token.start == NULL || token.end == NULL) {
@@ -77,28 +193,82 @@ tokenizeriter_next(tokenizeriterobject *it)
         str = PyUnicode_FromStringAndSize(token.start, token.end - token.start);
     }
     if (str == NULL) {
-        return NULL;
+        goto exit;
+    }
+
+    int is_trailing_token = 0;
+    if (type == ENDMARKER || (type == DEDENT && it->tok->done == E_EOF)) {
+        is_trailing_token = 1;
     }
 
-    Py_ssize_t size = it->tok->inp - it->tok->buf;
-    PyObject *line = PyUnicode_DecodeUTF8(it->tok->buf, size, "replace");
+    const char *line_start = ISSTRINGLIT(type) ? it->tok->multi_line_start : it->tok->line_start;
+    PyObject* line = NULL;
+    if (it->tok->tok_extra_tokens && is_trailing_token) {
+        line = PyUnicode_FromString("");
+    } else {
+        Py_ssize_t size = it->tok->inp - line_start;
+        if (size >= 1 && it->tok->implicit_newline) {
+            size -= 1;
+        }
+        line = PyUnicode_DecodeUTF8(line_start, size, "replace");
+    }
     if (line == NULL) {
         Py_DECREF(str);
-        return NULL;
+        goto exit;
     }
-    const char *line_start = ISSTRINGLIT(type) ? it->tok->multi_line_start : it->tok->line_start;
-    int lineno = ISSTRINGLIT(type) ? it->tok->first_lineno : it->tok->lineno;
-    int end_lineno = it->tok->lineno;
-    int col_offset = -1;
-    int end_col_offset = -1;
+
+    Py_ssize_t lineno = ISSTRINGLIT(type) ? it->tok->first_lineno : it->tok->lineno;
+    Py_ssize_t end_lineno = it->tok->lineno;
+    Py_ssize_t col_offset = -1;
+    Py_ssize_t end_col_offset = -1;
     if (token.start != NULL && token.start >= line_start) {
-        col_offset = (int)(token.start - line_start);
+        col_offset = _PyPegen_byte_offset_to_character_offset(line, token.start - line_start);
     }
     if (token.end != NULL && token.end >= it->tok->line_start) {
-        end_col_offset = (int)(token.end - it->tok->line_start);
+        end_col_offset = _PyPegen_byte_offset_to_character_offset(line, token.end - it->tok->line_start);
     }
 
-    return Py_BuildValue("(NiiiiiN)", str, type, lineno, end_lineno, col_offset, end_col_offset, line);
+    if (it->tok->tok_extra_tokens) {
+        if (is_trailing_token) {
+            lineno = end_lineno = lineno + 1;
+            col_offset = end_col_offset = 0;
+        }
+        // Necessary adjustments to match the original Python tokenize
+        // implementation
+        if (type > DEDENT && type < OP) {
+            type = OP;
+        }
+        else if (type == NEWLINE) {
+            Py_DECREF(str);
+            if (!it->tok->implicit_newline) {
+                if (it->tok->start[0] == '\r') {
+                    str = PyUnicode_FromString("\r\n");
+                } else {
+                    str = PyUnicode_FromString("\n");
+                }
+            }
+            end_col_offset++;
+        }
+        else if (type == NL) {
+            if (it->tok->implicit_newline) {
+                Py_DECREF(str);
+                str = PyUnicode_FromString("");
+            }
+        }
+
+        if (str == NULL) {
+            Py_DECREF(line);
+            goto exit;
+        }
+    }
+
+    result = Py_BuildValue("(iN(nn)(nn)N)", type, str, lineno, col_offset, end_lineno, end_col_offset, line);
+exit:
+    _PyToken_Free(&token);
+    if (type == ENDMARKER) {
+        it->done = 1;
+    }
+    return result;
 }
 
 static void
diff --git a/Python/_warnings.c b/Python/_warnings.c
index 5644db9a3770cb..d4765032824e56 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -1,10 +1,13 @@
 #include "Python.h"
-#include "pycore_initconfig.h"
+#include "pycore_dict.h"          // _PyDict_GetItemWithError()
 #include "pycore_interp.h"        // PyInterpreterState.warnings
 #include "pycore_long.h"          // _PyLong_GetZero()
-#include "pycore_pyerrors.h"
+#include "pycore_pyerrors.h"      // _PyErr_Occurred()
+#include "pycore_pylifecycle.h"   // _Py_IsInterpreterFinalizing()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "pycore_frame.h"
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
+#include "pycore_traceback.h"     // _Py_DisplaySourceLine()
+
 #include "clinic/_warnings.c.h"
 
 #define MODULE_NAME "_warnings"
@@ -198,7 +201,7 @@ get_warnings_attr(PyInterpreterState *interp, PyObject *attr, int try_import)
     PyObject *warnings_module, *obj;
 
     /* don't try to import after the start of the Python finallization */
-    if (try_import && !_Py_IsFinalizing()) {
+    if (try_import && !_Py_IsInterpreterFinalizing(interp)) {
         warnings_module = PyImport_Import(&_Py_ID(warnings));
         if (warnings_module == NULL) {
             /* Fallback to the C implementation if we cannot get
@@ -222,7 +225,7 @@ get_warnings_attr(PyInterpreterState *interp, PyObject *attr, int try_import)
             return NULL;
     }
 
-    (void)_PyObject_LookupAttr(warnings_module, attr, &obj);
+    (void)PyObject_GetOptionalAttr(warnings_module, attr, &obj);
     Py_DECREF(warnings_module);
     return obj;
 }
@@ -422,15 +425,15 @@ already_warned(PyInterpreterState *interp, PyObject *registry, PyObject *key,
         Py_DECREF(version_obj);
     }
     else {
-        already_warned = PyDict_GetItemWithError(registry, key);
+        if (PyDict_GetItemRef(registry, key, &already_warned) < 0) {
+            return -1;
+        }
         if (already_warned != NULL) {
             int rc = PyObject_IsTrue(already_warned);
+            Py_DECREF(already_warned);
             if (rc != 0)
                 return rc;
         }
-        else if (PyErr_Occurred()) {
-            return -1;
-        }
     }
 
     /* This warning wasn't found in the registry, set it. */
@@ -533,9 +536,6 @@ show_warning(PyThreadState *tstate, PyObject *filename, int lineno,
         Py_UCS4 ch;
         PyObject *truncated;
 
-        if (PyUnicode_READY(sourceline) < 1)
-            goto error;
-
         kind = PyUnicode_KIND(sourceline);
         data = PyUnicode_DATA(sourceline);
         len = PyUnicode_GET_LENGTH(sourceline);
@@ -901,7 +901,7 @@ setup_context(Py_ssize_t stack_level,
     }
     else {
         globals = f->f_frame->f_globals;
-        *filename = Py_NewRef(f->f_frame->f_code->co_filename);
+        *filename = Py_NewRef(_PyFrame_GetCode(f->f_frame)->co_filename);
         *lineno = PyFrame_GetLineNumber(f);
         Py_DECREF(f);
     }
@@ -1071,7 +1071,7 @@ get_source_line(PyInterpreterState *interp, PyObject *module_globals, int lineno
     Py_INCREF(module_name);
 
     /* Make sure the loader implements the optional get_source() method. */
-    (void)_PyObject_LookupAttr(loader, &_Py_ID(get_source), &get_source);
+    (void)PyObject_GetOptionalAttr(loader, &_Py_ID(get_source), &get_source);
     Py_DECREF(loader);
     if (!get_source) {
         Py_DECREF(module_name);
@@ -1301,25 +1301,29 @@ PyErr_WarnExplicit(PyObject *category, const char *text,
                    const char *module_str, PyObject *registry)
 {
     PyObject *message = PyUnicode_FromString(text);
+    if (message == NULL) {
+        return -1;
+    }
     PyObject *filename = PyUnicode_DecodeFSDefault(filename_str);
+    if (filename == NULL) {
+        Py_DECREF(message);
+        return -1;
+    }
     PyObject *module = NULL;
-    int ret = -1;
-
-    if (message == NULL || filename == NULL)
-        goto exit;
     if (module_str != NULL) {
         module = PyUnicode_FromString(module_str);
-        if (module == NULL)
-            goto exit;
+        if (module == NULL) {
+            Py_DECREF(filename);
+            Py_DECREF(message);
+            return -1;
+        }
     }
 
-    ret = PyErr_WarnExplicitObject(category, message, filename, lineno,
-                                   module, registry);
-
- exit:
-    Py_XDECREF(message);
+    int ret = PyErr_WarnExplicitObject(category, message, filename, lineno,
+                                       module, registry);
     Py_XDECREF(module);
-    Py_XDECREF(filename);
+    Py_DECREF(filename);
+    Py_DECREF(message);
     return ret;
 }
 
@@ -1365,6 +1369,20 @@ PyErr_WarnExplicitFormat(PyObject *category,
     return ret;
 }
 
+void
+_PyErr_WarnUnawaitedAgenMethod(PyAsyncGenObject *agen, PyObject *method)
+{
+    PyObject *exc = PyErr_GetRaisedException();
+    if (_PyErr_WarnFormat((PyObject *)agen, PyExc_RuntimeWarning, 1,
+                          "coroutine method %R of %R was never awaited",
+                          method, agen->ag_qualname) < 0)
+    {
+        PyErr_WriteUnraisable((PyObject *)agen);
+    }
+    PyErr_SetRaisedException(exc);
+}
+
+
 void
 _PyErr_WarnUnawaitedCoroutine(PyObject *coro)
 {
diff --git a/Python/abstract_interp_cases.c.h b/Python/abstract_interp_cases.c.h
new file mode 100644
index 00000000000000..96ac0aabd1b59f
--- /dev/null
+++ b/Python/abstract_interp_cases.c.h
@@ -0,0 +1,967 @@
+// This file is generated by Tools/cases_generator/generate_cases.py
+// from:
+//   Python/bytecodes.c
+// Do not edit!
+
+        case NOP: {
+            break;
+        }
+
+        case RESUME_CHECK: {
+            break;
+        }
+
+        case POP_TOP: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case PUSH_NULL: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case END_SEND: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case UNARY_NEGATIVE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case UNARY_NOT: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _TO_BOOL: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case TO_BOOL_BOOL: {
+            break;
+        }
+
+        case TO_BOOL_INT: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case TO_BOOL_LIST: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case TO_BOOL_NONE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case TO_BOOL_STR: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case TO_BOOL_ALWAYS_TRUE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case UNARY_INVERT: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _GUARD_BOTH_INT: {
+            break;
+        }
+
+        case _GUARD_BOTH_FLOAT: {
+            break;
+        }
+
+        case _BINARY_OP_MULTIPLY_FLOAT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _BINARY_OP_ADD_FLOAT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _BINARY_OP_SUBTRACT_FLOAT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _GUARD_BOTH_UNICODE: {
+            break;
+        }
+
+        case _BINARY_OP_ADD_UNICODE: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _BINARY_SUBSCR: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BINARY_SLICE: {
+            STACK_SHRINK(2);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case STORE_SLICE: {
+            STACK_SHRINK(4);
+            break;
+        }
+
+        case BINARY_SUBSCR_LIST_INT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BINARY_SUBSCR_STR_INT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BINARY_SUBSCR_TUPLE_INT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BINARY_SUBSCR_DICT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case LIST_APPEND: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case SET_ADD: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _STORE_SUBSCR: {
+            STACK_SHRINK(3);
+            break;
+        }
+
+        case STORE_SUBSCR_LIST_INT: {
+            STACK_SHRINK(3);
+            break;
+        }
+
+        case STORE_SUBSCR_DICT: {
+            STACK_SHRINK(3);
+            break;
+        }
+
+        case DELETE_SUBSCR: {
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case CALL_INTRINSIC_1: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_INTRINSIC_2: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _POP_FRAME: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case GET_AITER: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case GET_ANEXT: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case GET_AWAITABLE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case POP_EXCEPT: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case LOAD_ASSERTION_ERROR: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case LOAD_BUILD_CLASS: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case STORE_NAME: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case DELETE_NAME: {
+            break;
+        }
+
+        case _UNPACK_SEQUENCE: {
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_SEQUENCE_TWO_TUPLE: {
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_SEQUENCE_TUPLE: {
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_SEQUENCE_LIST: {
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_EX: {
+            STACK_GROW((oparg & 0xFF) + (oparg >> 8));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg >> 8))), true);
+            break;
+        }
+
+        case _STORE_ATTR: {
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case DELETE_ATTR: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case STORE_GLOBAL: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case DELETE_GLOBAL: {
+            break;
+        }
+
+        case LOAD_LOCALS: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case LOAD_FROM_DICT_OR_GLOBALS: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case LOAD_NAME: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _LOAD_GLOBAL: {
+            STACK_GROW(1);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _GUARD_GLOBALS_VERSION: {
+            break;
+        }
+
+        case _GUARD_BUILTINS_VERSION: {
+            break;
+        }
+
+        case _LOAD_GLOBAL_MODULE: {
+            STACK_GROW(1);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _LOAD_GLOBAL_BUILTINS: {
+            STACK_GROW(1);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case DELETE_FAST: {
+            break;
+        }
+
+        case MAKE_CELL: {
+            break;
+        }
+
+        case DELETE_DEREF: {
+            break;
+        }
+
+        case LOAD_FROM_DICT_OR_DEREF: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case LOAD_DEREF: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case STORE_DEREF: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case COPY_FREE_VARS: {
+            break;
+        }
+
+        case BUILD_STRING: {
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BUILD_TUPLE: {
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BUILD_LIST: {
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case LIST_EXTEND: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case SET_UPDATE: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case BUILD_SET: {
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BUILD_MAP: {
+            STACK_SHRINK(oparg*2);
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case SETUP_ANNOTATIONS: {
+            break;
+        }
+
+        case BUILD_CONST_KEY_MAP: {
+            STACK_SHRINK(oparg);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case DICT_UPDATE: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case DICT_MERGE: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case MAP_ADD: {
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case LOAD_SUPER_ATTR_ATTR: {
+            STACK_SHRINK(2);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(0)), true);
+            break;
+        }
+
+        case LOAD_SUPER_ATTR_METHOD: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _LOAD_ATTR: {
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _GUARD_TYPE_VERSION: {
+            break;
+        }
+
+        case _CHECK_MANAGED_OBJECT_HAS_VALUES: {
+            break;
+        }
+
+        case _LOAD_ATTR_INSTANCE_VALUE: {
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _CHECK_ATTR_MODULE: {
+            break;
+        }
+
+        case _LOAD_ATTR_MODULE: {
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _CHECK_ATTR_WITH_HINT: {
+            break;
+        }
+
+        case _LOAD_ATTR_WITH_HINT: {
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _LOAD_ATTR_SLOT: {
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _CHECK_ATTR_CLASS: {
+            break;
+        }
+
+        case _LOAD_ATTR_CLASS: {
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - (oparg & 1 ? 1 : 0))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-(oparg & 1 ? 1 : 0))), true);
+            break;
+        }
+
+        case _GUARD_DORV_VALUES: {
+            break;
+        }
+
+        case _STORE_ATTR_INSTANCE_VALUE: {
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case _STORE_ATTR_SLOT: {
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case _COMPARE_OP: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case COMPARE_OP_FLOAT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case COMPARE_OP_INT: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case COMPARE_OP_STR: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case IS_OP: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CONTAINS_OP: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CHECK_EG_MATCH: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CHECK_EXC_MATCH: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _IS_NONE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case GET_LEN: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case MATCH_CLASS: {
+            STACK_SHRINK(2);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case MATCH_MAPPING: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case MATCH_SEQUENCE: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case MATCH_KEYS: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case GET_ITER: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case GET_YIELD_FROM_ITER: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _FOR_ITER_TIER_TWO: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _ITER_CHECK_LIST: {
+            break;
+        }
+
+        case _GUARD_NOT_EXHAUSTED_LIST: {
+            break;
+        }
+
+        case _ITER_NEXT_LIST: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _ITER_CHECK_TUPLE: {
+            break;
+        }
+
+        case _GUARD_NOT_EXHAUSTED_TUPLE: {
+            break;
+        }
+
+        case _ITER_NEXT_TUPLE: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _ITER_CHECK_RANGE: {
+            break;
+        }
+
+        case _GUARD_NOT_EXHAUSTED_RANGE: {
+            break;
+        }
+
+        case _ITER_NEXT_RANGE: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BEFORE_ASYNC_WITH: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BEFORE_WITH: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case WITH_EXCEPT_START: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case PUSH_EXC_INFO: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT: {
+            break;
+        }
+
+        case _GUARD_KEYS_VERSION: {
+            break;
+        }
+
+        case _LOAD_ATTR_METHOD_WITH_VALUES: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _LOAD_ATTR_METHOD_NO_DICT: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(0)), true);
+            break;
+        }
+
+        case _LOAD_ATTR_NONDESCRIPTOR_NO_DICT: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(0)), true);
+            break;
+        }
+
+        case _CHECK_ATTR_METHOD_LAZY_DICT: {
+            break;
+        }
+
+        case _LOAD_ATTR_METHOD_LAZY_DICT: {
+            STACK_GROW(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _CHECK_CALL_BOUND_METHOD_EXACT_ARGS: {
+            break;
+        }
+
+        case _INIT_CALL_BOUND_METHOD_EXACT_ARGS: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2 - oparg)), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - oparg)), true);
+            break;
+        }
+
+        case _CHECK_PEP_523: {
+            break;
+        }
+
+        case _CHECK_FUNCTION_EXACT_ARGS: {
+            break;
+        }
+
+        case _CHECK_STACK_SPACE: {
+            break;
+        }
+
+        case _INIT_CALL_PY_EXACT_ARGS: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _PUSH_FRAME: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(0)), true);
+            break;
+        }
+
+        case CALL_TYPE_1: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_STR_1: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_TUPLE_1: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case EXIT_INIT_CHECK: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case CALL_BUILTIN_CLASS: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_BUILTIN_O: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_BUILTIN_FAST: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_BUILTIN_FAST_WITH_KEYWORDS: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_LEN: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_ISINSTANCE: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_O: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_NOARGS: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_FAST: {
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case MAKE_FUNCTION: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case SET_FUNCTION_ATTRIBUTE: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case BUILD_SLICE: {
+            STACK_SHRINK(((oparg == 3) ? 1 : 0));
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case CONVERT_VALUE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case FORMAT_SIMPLE: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case FORMAT_WITH_SPEC: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _BINARY_OP: {
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case SWAP: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-2 - (oparg-2))), true);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            break;
+        }
+
+        case _GUARD_IS_TRUE_POP: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _GUARD_IS_FALSE_POP: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _GUARD_IS_NONE_POP: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _GUARD_IS_NOT_NONE_POP: {
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _JUMP_TO_TOP: {
+            break;
+        }
+
+        case _SET_IP: {
+            break;
+        }
+
+        case _SAVE_RETURN_OFFSET: {
+            break;
+        }
+
+        case _EXIT_TRACE: {
+            break;
+        }
+
+        case _INSERT: {
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1 - oparg)), true);
+            break;
+        }
+
+        case _CHECK_VALIDITY: {
+            break;
+        }
diff --git a/Python/assemble.c b/Python/assemble.c
index 8789d8ef978c22..b6fb432aed4a3b 100644
--- a/Python/assemble.c
+++ b/Python/assemble.c
@@ -1,10 +1,10 @@
 #include <stdbool.h>
 
 #include "Python.h"
-#include "pycore_code.h"          // write_location_entry_start()
+#include "pycore_code.h"            // write_location_entry_start()
 #include "pycore_compile.h"
-#include "pycore_opcode.h"        // _PyOpcode_Caches[] and opcode category macros
-#include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
+#include "pycore_opcode_utils.h"    // IS_BACKWARDS_JUMP_OPCODE
+#include "pycore_opcode_metadata.h" // IS_PSEUDO_INSTR, _PyOpcode_Caches
 
 
 #define DEFAULT_CODE_SIZE 128
@@ -17,7 +17,7 @@
 #define ERROR -1
 
 #define RETURN_IF_ERROR(X)  \
-    if ((X) == -1) {        \
+    if ((X) < 0) {          \
         return ERROR;       \
     }
 
@@ -34,6 +34,18 @@ same_location(location a, location b)
            a.end_col_offset == b.end_col_offset;
 }
 
+static int
+instr_size(instruction *instr)
+{
+    int opcode = instr->i_opcode;
+    int oparg = instr->i_oparg;
+    assert(!IS_PSEUDO_INSTR(opcode));
+    assert(OPCODE_HAS_ARG(opcode) || oparg == 0);
+    int extended_args = (0xFFFFFF < oparg) + (0xFFFF < oparg) + (0xFF < oparg);
+    int caches = _PyOpcode_Caches[opcode];
+    return extended_args + 1 + caches;
+}
+
 struct assembler {
     PyObject *a_bytecode;  /* bytes containing bytecode */
     int a_offset;              /* offset into bytecode */
@@ -118,6 +130,7 @@ assemble_emit_exception_table_item(struct assembler *a, int value, int msb)
 
 static int
 assemble_emit_exception_table_entry(struct assembler *a, int start, int end,
+                                    int handler_offset,
                                     _PyCompile_ExceptHandlerInfo *handler)
 {
     Py_ssize_t len = PyBytes_GET_SIZE(a->a_except_table);
@@ -126,7 +139,7 @@ assemble_emit_exception_table_entry(struct assembler *a, int start, int end,
     }
     int size = end-start;
     assert(end > start);
-    int target = handler->h_offset;
+    int target = handler_offset;
     int depth = handler->h_startdepth - 1;
     if (handler->h_preserve_lasti > 0) {
         depth -= 1;
@@ -145,23 +158,30 @@ assemble_exception_table(struct assembler *a, instr_sequence *instrs)
 {
     int ioffset = 0;
     _PyCompile_ExceptHandlerInfo handler;
-    handler.h_offset = -1;
+    handler.h_label = -1;
+    handler.h_startdepth = -1;
     handler.h_preserve_lasti = -1;
     int start = -1;
     for (int i = 0; i < instrs->s_used; i++) {
         instruction *instr = &instrs->s_instrs[i];
-        if (instr->i_except_handler_info.h_offset != handler.h_offset) {
-            if (handler.h_offset >= 0) {
+        if (instr->i_except_handler_info.h_label != handler.h_label) {
+            if (handler.h_label >= 0) {
+                int handler_offset = instrs->s_instrs[handler.h_label].i_offset;
                 RETURN_IF_ERROR(
-                    assemble_emit_exception_table_entry(a, start, ioffset, &handler));
+                    assemble_emit_exception_table_entry(a, start, ioffset,
+                                                        handler_offset,
+                                                        &handler));
             }
             start = ioffset;
             handler = instr->i_except_handler_info;
         }
-        ioffset += _PyCompile_InstrSize(instr->i_opcode, instr->i_oparg);
+        ioffset += instr_size(instr);
     }
-    if (handler.h_offset >= 0) {
-        RETURN_IF_ERROR(assemble_emit_exception_table_entry(a, start, ioffset, &handler));
+    if (handler.h_label >= 0) {
+        int handler_offset = instrs->s_instrs[handler.h_label].i_offset;
+        RETURN_IF_ERROR(assemble_emit_exception_table_entry(a, start, ioffset,
+                                                            handler_offset,
+                                                            &handler));
     }
     return SUCCESS;
 }
@@ -328,7 +348,7 @@ assemble_location_info(struct assembler *a, instr_sequence *instrs,
                 loc = instr->i_loc;
                 size = 0;
         }
-        size += _PyCompile_InstrSize(instr->i_opcode, instr->i_oparg);
+        size += instr_size(instr);
     }
     RETURN_IF_ERROR(assemble_emit_location(a, loc, size));
     return SUCCESS;
@@ -338,9 +358,9 @@ static void
 write_instr(_Py_CODEUNIT *codestr, instruction *instr, int ilen)
 {
     int opcode = instr->i_opcode;
-    assert(!IS_PSEUDO_OPCODE(opcode));
+    assert(!IS_PSEUDO_INSTR(opcode));
     int oparg = instr->i_oparg;
-    assert(HAS_ARG(opcode) || oparg == 0);
+    assert(OPCODE_HAS_ARG(opcode) || oparg == 0);
     int caches = _PyOpcode_Caches[opcode];
     switch (ilen - caches) {
         case 4:
@@ -384,7 +404,7 @@ assemble_emit_instr(struct assembler *a, instruction *instr)
     Py_ssize_t len = PyBytes_GET_SIZE(a->a_bytecode);
     _Py_CODEUNIT *code;
 
-    int size = _PyCompile_InstrSize(instr->i_opcode, instr->i_oparg);
+    int size = instr_size(instr);
     if (a->a_offset + size >= len / (int)sizeof(_Py_CODEUNIT)) {
         if (len > PY_SSIZE_T_MAX / 2) {
             return ERROR;
@@ -427,13 +447,17 @@ static PyObject *
 dict_keys_inorder(PyObject *dict, Py_ssize_t offset)
 {
     PyObject *tuple, *k, *v;
-    Py_ssize_t i, pos = 0, size = PyDict_GET_SIZE(dict);
+    Py_ssize_t pos = 0, size = PyDict_GET_SIZE(dict);
 
     tuple = PyTuple_New(size);
     if (tuple == NULL)
         return NULL;
     while (PyDict_Next(dict, &pos, &k, &v)) {
-        i = PyLong_AS_LONG(v);
+        Py_ssize_t i = PyLong_AsSsize_t(v);
+        if (i == -1 && PyErr_Occurred()) {
+            Py_DECREF(tuple);
+            return NULL;
+        }
         assert((i - offset) < size);
         assert((i - offset) >= 0);
         PyTuple_SET_ITEM(tuple, i - offset, Py_NewRef(k));
@@ -445,24 +469,34 @@ dict_keys_inorder(PyObject *dict, Py_ssize_t offset)
 extern void _Py_set_localsplus_info(int, PyObject *, unsigned char,
                                    PyObject *, PyObject *);
 
-static void
+static int
 compute_localsplus_info(_PyCompile_CodeUnitMetadata *umd, int nlocalsplus,
                         PyObject *names, PyObject *kinds)
 {
     PyObject *k, *v;
     Py_ssize_t pos = 0;
     while (PyDict_Next(umd->u_varnames, &pos, &k, &v)) {
-        int offset = (int)PyLong_AS_LONG(v);
+        int offset = PyLong_AsInt(v);
+        if (offset == -1 && PyErr_Occurred()) {
+            return ERROR;
+        }
         assert(offset >= 0);
         assert(offset < nlocalsplus);
+
         // For now we do not distinguish arg kinds.
         _PyLocals_Kind kind = CO_FAST_LOCAL;
-        if (PyDict_Contains(umd->u_fasthidden, k)) {
+        int has_key = PyDict_Contains(umd->u_fasthidden, k);
+        RETURN_IF_ERROR(has_key);
+        if (has_key) {
             kind |= CO_FAST_HIDDEN;
         }
-        if (PyDict_GetItem(umd->u_cellvars, k) != NULL) {
+
+        has_key = PyDict_Contains(umd->u_cellvars, k);
+        RETURN_IF_ERROR(has_key);
+        if (has_key) {
             kind |= CO_FAST_CELL;
         }
+
         _Py_set_localsplus_info(offset, k, kind, names, kinds);
     }
     int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
@@ -471,12 +505,18 @@ compute_localsplus_info(_PyCompile_CodeUnitMetadata *umd, int nlocalsplus,
     int numdropped = 0;
     pos = 0;
     while (PyDict_Next(umd->u_cellvars, &pos, &k, &v)) {
-        if (PyDict_GetItem(umd->u_varnames, k) != NULL) {
+        int has_name = PyDict_Contains(umd->u_varnames, k);
+        RETURN_IF_ERROR(has_name);
+        if (has_name) {
             // Skip cells that are already covered by locals.
             numdropped += 1;
             continue;
         }
-        int offset = (int)PyLong_AS_LONG(v);
+
+        int offset = PyLong_AsInt(v);
+        if (offset == -1 && PyErr_Occurred()) {
+            return ERROR;
+        }
         assert(offset >= 0);
         offset += nlocals - numdropped;
         assert(offset < nlocalsplus);
@@ -485,12 +525,16 @@ compute_localsplus_info(_PyCompile_CodeUnitMetadata *umd, int nlocalsplus,
 
     pos = 0;
     while (PyDict_Next(umd->u_freevars, &pos, &k, &v)) {
-        int offset = (int)PyLong_AS_LONG(v);
+        int offset = PyLong_AsInt(v);
+        if (offset == -1 && PyErr_Occurred()) {
+            return ERROR;
+        }
         assert(offset >= 0);
         offset += nlocals - numdropped;
         assert(offset < nlocalsplus);
         _Py_set_localsplus_info(offset, k, CO_FAST_FREE, names, kinds);
     }
+    return SUCCESS;
 }
 
 static PyCodeObject *
@@ -535,7 +579,10 @@ makecode(_PyCompile_CodeUnitMetadata *umd, struct assembler *a, PyObject *const_
     if (localspluskinds == NULL) {
         goto error;
     }
-    compute_localsplus_info(umd, nlocalsplus, localsplusnames, localspluskinds);
+    if (compute_localsplus_info(umd, nlocalsplus,
+                                localsplusnames, localspluskinds) == ERROR) {
+        goto error;
+    }
 
     struct _PyCodeConstructor con = {
         .filename = filename,
@@ -584,12 +631,117 @@ makecode(_PyCompile_CodeUnitMetadata *umd, struct assembler *a, PyObject *const_
     return co;
 }
 
+static int
+resolve_jump_offsets(instr_sequence *instrs)
+{
+    /* Compute the size of each instruction and fixup jump args.
+     * Replace instruction index with position in bytecode.
+     */
+
+    for (int i = 0; i < instrs->s_used; i++) {
+        instruction *instr = &instrs->s_instrs[i];
+        if (OPCODE_HAS_JUMP(instr->i_opcode)) {
+            instr->i_target = instr->i_oparg;
+        }
+    }
+
+    int extended_arg_recompile;
+
+    do {
+        int totsize = 0;
+        for (int i = 0; i < instrs->s_used; i++) {
+            instruction *instr = &instrs->s_instrs[i];
+            instr->i_offset = totsize;
+            int isize = instr_size(instr);
+            totsize += isize;
+        }
+        extended_arg_recompile = 0;
+
+        int offset = 0;
+        for (int i = 0; i < instrs->s_used; i++) {
+            instruction *instr = &instrs->s_instrs[i];
+            int isize = instr_size(instr);
+            /* jump offsets are computed relative to
+             * the instruction pointer after fetching
+             * the jump instruction.
+             */
+            offset += isize;
+            if (OPCODE_HAS_JUMP(instr->i_opcode)) {
+                instruction *target = &instrs->s_instrs[instr->i_target];
+                instr->i_oparg = target->i_offset;
+                if (instr->i_oparg < offset) {
+                    assert(IS_BACKWARDS_JUMP_OPCODE(instr->i_opcode));
+                    instr->i_oparg = offset - instr->i_oparg;
+                }
+                else {
+                    assert(!IS_BACKWARDS_JUMP_OPCODE(instr->i_opcode));
+                    instr->i_oparg = instr->i_oparg - offset;
+                }
+                if (instr_size(instr) != isize) {
+                    extended_arg_recompile = 1;
+                }
+            }
+        }
+    /* XXX: This is an awful hack that could hurt performance, but
+        on the bright side it should work until we come up
+        with a better solution.
+
+        The issue is that in the first loop instr_size() is
+        called, and it requires i_oparg be set appropriately.
+        There is a bootstrap problem because i_oparg is
+        calculated in the second loop above.
+
+        So we loop until we stop seeing new EXTENDED_ARGs.
+        The only EXTENDED_ARGs that could be popping up are
+        ones in jump instructions.  So this should converge
+        fairly quickly.
+    */
+    } while (extended_arg_recompile);
+    return SUCCESS;
+}
+
+static int
+resolve_unconditional_jumps(instr_sequence *instrs)
+{
+    /* Resolve directions of unconditional jumps */
+
+    for (int i = 0; i < instrs->s_used; i++) {
+        instruction *instr = &instrs->s_instrs[i];
+        bool is_forward = (instr->i_oparg > i);
+        switch(instr->i_opcode) {
+            case JUMP:
+                assert(SAME_OPCODE_METADATA(JUMP, JUMP_FORWARD));
+                assert(SAME_OPCODE_METADATA(JUMP, JUMP_BACKWARD));
+                instr->i_opcode = is_forward ? JUMP_FORWARD : JUMP_BACKWARD;
+                break;
+            case JUMP_NO_INTERRUPT:
+                assert(SAME_OPCODE_METADATA(JUMP_NO_INTERRUPT, JUMP_FORWARD));
+                assert(SAME_OPCODE_METADATA(JUMP_NO_INTERRUPT, JUMP_BACKWARD_NO_INTERRUPT));
+                instr->i_opcode = is_forward ?
+                    JUMP_FORWARD : JUMP_BACKWARD_NO_INTERRUPT;
+                break;
+            default:
+                if (OPCODE_HAS_JUMP(instr->i_opcode) &&
+                    IS_PSEUDO_INSTR(instr->i_opcode)) {
+                    Py_UNREACHABLE();
+                }
+        }
+    }
+    return SUCCESS;
+}
 
 PyCodeObject *
 _PyAssemble_MakeCodeObject(_PyCompile_CodeUnitMetadata *umd, PyObject *const_cache,
                            PyObject *consts, int maxdepth, instr_sequence *instrs,
                            int nlocalsplus, int code_flags, PyObject *filename)
 {
+
+    if (resolve_unconditional_jumps(instrs) < 0) {
+        return NULL;
+    }
+    if (resolve_jump_offsets(instrs) < 0) {
+        return NULL;
+    }
     PyCodeObject *co = NULL;
 
     struct assembler a;
diff --git a/Python/ast.c b/Python/ast.c
index 50fc8e01fb3f69..5f46d4149c2ed0 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -17,10 +17,12 @@ struct validator {
 static int validate_stmts(struct validator *, asdl_stmt_seq *);
 static int validate_exprs(struct validator *, asdl_expr_seq *, expr_context_ty, int);
 static int validate_patterns(struct validator *, asdl_pattern_seq *, int);
+static int validate_type_params(struct validator *, asdl_type_param_seq *);
 static int _validate_nonempty_seq(asdl_seq *, const char *, const char *);
 static int validate_stmt(struct validator *, stmt_ty);
 static int validate_expr(struct validator *, expr_ty, expr_context_ty);
 static int validate_pattern(struct validator *, pattern_ty, int);
+static int validate_typeparam(struct validator *, type_param_ty);
 
 #define VALIDATE_POSITIONS(node) \
     if (node->lineno > node->end_lineno) { \
@@ -46,6 +48,7 @@ static int validate_pattern(struct validator *, pattern_ty, int);
 static int
 validate_name(PyObject *name)
 {
+    assert(!PyErr_Occurred());
     assert(PyUnicode_Check(name));
     static const char * const forbidden[] = {
         "None",
@@ -65,12 +68,12 @@ validate_name(PyObject *name)
 static int
 validate_comprehension(struct validator *state, asdl_comprehension_seq *gens)
 {
-    Py_ssize_t i;
+    assert(!PyErr_Occurred());
     if (!asdl_seq_LEN(gens)) {
         PyErr_SetString(PyExc_ValueError, "comprehension with no generators");
         return 0;
     }
-    for (i = 0; i < asdl_seq_LEN(gens); i++) {
+    for (Py_ssize_t i = 0; i < asdl_seq_LEN(gens); i++) {
         comprehension_ty comp = asdl_seq_GET(gens, i);
         if (!validate_expr(state, comp->target, Store) ||
             !validate_expr(state, comp->iter, Load) ||
@@ -83,8 +86,8 @@ validate_comprehension(struct validator *state, asdl_comprehension_seq *gens)
 static int
 validate_keywords(struct validator *state, asdl_keyword_seq *keywords)
 {
-    Py_ssize_t i;
-    for (i = 0; i < asdl_seq_LEN(keywords); i++)
+    assert(!PyErr_Occurred());
+    for (Py_ssize_t i = 0; i < asdl_seq_LEN(keywords); i++)
         if (!validate_expr(state, (asdl_seq_GET(keywords, i))->value, Load))
             return 0;
     return 1;
@@ -93,8 +96,8 @@ validate_keywords(struct validator *state, asdl_keyword_seq *keywords)
 static int
 validate_args(struct validator *state, asdl_arg_seq *args)
 {
-    Py_ssize_t i;
-    for (i = 0; i < asdl_seq_LEN(args); i++) {
+    assert(!PyErr_Occurred());
+    for (Py_ssize_t i = 0; i < asdl_seq_LEN(args); i++) {
         arg_ty arg = asdl_seq_GET(args, i);
         VALIDATE_POSITIONS(arg);
         if (arg->annotation && !validate_expr(state, arg->annotation, Load))
@@ -121,6 +124,7 @@ expr_context_name(expr_context_ty ctx)
 static int
 validate_arguments(struct validator *state, arguments_ty args)
 {
+    assert(!PyErr_Occurred());
     if (!validate_args(state, args->posonlyargs) || !validate_args(state, args->args)) {
         return 0;
     }
@@ -149,6 +153,7 @@ validate_arguments(struct validator *state, arguments_ty args)
 static int
 validate_constant(struct validator *state, PyObject *value)
 {
+    assert(!PyErr_Occurred());
     if (value == Py_None || value == Py_Ellipsis)
         return 1;
 
@@ -205,6 +210,7 @@ validate_constant(struct validator *state, PyObject *value)
 static int
 validate_expr(struct validator *state, expr_ty exp, expr_context_ty ctx)
 {
+    assert(!PyErr_Occurred());
     VALIDATE_POSITIONS(exp);
     int ret = -1;
     if (++state->recursion_depth > state->recursion_limit) {
@@ -375,6 +381,11 @@ validate_expr(struct validator *state, expr_ty exp, expr_context_ty ctx)
         ret = validate_exprs(state, exp->v.Tuple.elts, ctx, 0);
         break;
     case NamedExpr_kind:
+        if (exp->v.NamedExpr.target->kind != Name_kind) {
+            PyErr_SetString(PyExc_TypeError,
+                            "NamedExpr target must be a Name");
+            return 0;
+        }
         ret = validate_expr(state, exp->v.NamedExpr.value, Load);
         break;
     /* This last case doesn't have any checking. */
@@ -465,6 +476,7 @@ ensure_literal_complex(expr_ty exp)
 static int
 validate_pattern_match_value(struct validator *state, expr_ty exp)
 {
+    assert(!PyErr_Occurred());
     if (!validate_expr(state, exp, Load)) {
         return 0;
     }
@@ -518,6 +530,7 @@ validate_pattern_match_value(struct validator *state, expr_ty exp)
 static int
 validate_capture(PyObject *name)
 {
+    assert(!PyErr_Occurred());
     if (_PyUnicode_EqualToASCIIString(name, "_")) {
         PyErr_Format(PyExc_ValueError, "can't capture name '_' in patterns");
         return 0;
@@ -528,6 +541,7 @@ validate_capture(PyObject *name)
 static int
 validate_pattern(struct validator *state, pattern_ty p, int star_ok)
 {
+    assert(!PyErr_Occurred());
     VALIDATE_POSITIONS(p);
     int ret = -1;
     if (++state->recursion_depth > state->recursion_limit) {
@@ -580,7 +594,9 @@ validate_pattern(struct validator *state, pattern_ty p, int star_ok)
                     break;
                 }
             }
-
+            if (ret == 0) {
+                break;
+            }
             ret = validate_patterns(state, p->v.MatchMapping.patterns, /*star_ok=*/0);
             break;
         case MatchClass_kind:
@@ -611,6 +627,9 @@ validate_pattern(struct validator *state, pattern_ty p, int star_ok)
                     break;
                 }
             }
+            if (ret == 0) {
+                break;
+            }
 
             for (Py_ssize_t i = 0; i < asdl_seq_LEN(p->v.MatchClass.kwd_attrs); i++) {
                 PyObject *identifier = asdl_seq_GET(p->v.MatchClass.kwd_attrs, i);
@@ -619,6 +638,9 @@ validate_pattern(struct validator *state, pattern_ty p, int star_ok)
                     break;
                 }
             }
+            if (ret == 0) {
+                break;
+            }
 
             if (!validate_patterns(state, p->v.MatchClass.patterns, /*star_ok=*/0)) {
                 ret = 0;
@@ -685,6 +707,7 @@ _validate_nonempty_seq(asdl_seq *seq, const char *what, const char *owner)
 static int
 validate_assignlist(struct validator *state, asdl_expr_seq *targets, expr_context_ty ctx)
 {
+    assert(!PyErr_Occurred());
     return validate_nonempty_seq(targets, "targets", ctx == Del ? "Delete" : "Assign") &&
         validate_exprs(state, targets, ctx, 0);
 }
@@ -692,15 +715,16 @@ validate_assignlist(struct validator *state, asdl_expr_seq *targets, expr_contex
 static int
 validate_body(struct validator *state, asdl_stmt_seq *body, const char *owner)
 {
+    assert(!PyErr_Occurred());
     return validate_nonempty_seq(body, "body", owner) && validate_stmts(state, body);
 }
 
 static int
 validate_stmt(struct validator *state, stmt_ty stmt)
 {
+    assert(!PyErr_Occurred());
     VALIDATE_POSITIONS(stmt);
     int ret = -1;
-    Py_ssize_t i;
     if (++state->recursion_depth > state->recursion_limit) {
         PyErr_SetString(PyExc_RecursionError,
                         "maximum recursion depth exceeded during compilation");
@@ -709,6 +733,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
     switch (stmt->kind) {
     case FunctionDef_kind:
         ret = validate_body(state, stmt->v.FunctionDef.body, "FunctionDef") &&
+            validate_type_params(state, stmt->v.FunctionDef.type_params) &&
             validate_arguments(state, stmt->v.FunctionDef.args) &&
             validate_exprs(state, stmt->v.FunctionDef.decorator_list, Load, 0) &&
             (!stmt->v.FunctionDef.returns ||
@@ -716,6 +741,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
         break;
     case ClassDef_kind:
         ret = validate_body(state, stmt->v.ClassDef.body, "ClassDef") &&
+            validate_type_params(state, stmt->v.ClassDef.type_params) &&
             validate_exprs(state, stmt->v.ClassDef.bases, Load, 0) &&
             validate_keywords(state, stmt->v.ClassDef.keywords) &&
             validate_exprs(state, stmt->v.ClassDef.decorator_list, Load, 0);
@@ -746,6 +772,16 @@ validate_stmt(struct validator *state, stmt_ty stmt)
                 validate_expr(state, stmt->v.AnnAssign.value, Load)) &&
                validate_expr(state, stmt->v.AnnAssign.annotation, Load);
         break;
+    case TypeAlias_kind:
+        if (stmt->v.TypeAlias.name->kind != Name_kind) {
+            PyErr_SetString(PyExc_TypeError,
+                            "TypeAlias with non-Name name");
+            return 0;
+        }
+        ret = validate_expr(state, stmt->v.TypeAlias.name, Store) &&
+            validate_type_params(state, stmt->v.TypeAlias.type_params) &&
+            validate_expr(state, stmt->v.TypeAlias.value, Load);
+        break;
     case For_kind:
         ret = validate_expr(state, stmt->v.For.target, Store) &&
             validate_expr(state, stmt->v.For.iter, Load) &&
@@ -771,7 +807,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
     case With_kind:
         if (!validate_nonempty_seq(stmt->v.With.items, "items", "With"))
             return 0;
-        for (i = 0; i < asdl_seq_LEN(stmt->v.With.items); i++) {
+        for (Py_ssize_t i = 0; i < asdl_seq_LEN(stmt->v.With.items); i++) {
             withitem_ty item = asdl_seq_GET(stmt->v.With.items, i);
             if (!validate_expr(state, item->context_expr, Load) ||
                 (item->optional_vars && !validate_expr(state, item->optional_vars, Store)))
@@ -782,7 +818,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
     case AsyncWith_kind:
         if (!validate_nonempty_seq(stmt->v.AsyncWith.items, "items", "AsyncWith"))
             return 0;
-        for (i = 0; i < asdl_seq_LEN(stmt->v.AsyncWith.items); i++) {
+        for (Py_ssize_t i = 0; i < asdl_seq_LEN(stmt->v.AsyncWith.items); i++) {
             withitem_ty item = asdl_seq_GET(stmt->v.AsyncWith.items, i);
             if (!validate_expr(state, item->context_expr, Load) ||
                 (item->optional_vars && !validate_expr(state, item->optional_vars, Store)))
@@ -795,7 +831,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
             || !validate_nonempty_seq(stmt->v.Match.cases, "cases", "Match")) {
             return 0;
         }
-        for (i = 0; i < asdl_seq_LEN(stmt->v.Match.cases); i++) {
+        for (Py_ssize_t i = 0; i < asdl_seq_LEN(stmt->v.Match.cases); i++) {
             match_case_ty m = asdl_seq_GET(stmt->v.Match.cases, i);
             if (!validate_pattern(state, m->pattern, /*star_ok=*/0)
                 || (m->guard && !validate_expr(state, m->guard, Load))
@@ -830,7 +866,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
             PyErr_SetString(PyExc_ValueError, "Try has orelse but no except handlers");
             return 0;
         }
-        for (i = 0; i < asdl_seq_LEN(stmt->v.Try.handlers); i++) {
+        for (Py_ssize_t i = 0; i < asdl_seq_LEN(stmt->v.Try.handlers); i++) {
             excepthandler_ty handler = asdl_seq_GET(stmt->v.Try.handlers, i);
             VALIDATE_POSITIONS(handler);
             if ((handler->v.ExceptHandler.type &&
@@ -856,7 +892,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
             PyErr_SetString(PyExc_ValueError, "TryStar has orelse but no except handlers");
             return 0;
         }
-        for (i = 0; i < asdl_seq_LEN(stmt->v.TryStar.handlers); i++) {
+        for (Py_ssize_t i = 0; i < asdl_seq_LEN(stmt->v.TryStar.handlers); i++) {
             excepthandler_ty handler = asdl_seq_GET(stmt->v.TryStar.handlers, i);
             if ((handler->v.ExceptHandler.type &&
                  !validate_expr(state, handler->v.ExceptHandler.type, Load)) ||
@@ -893,6 +929,7 @@ validate_stmt(struct validator *state, stmt_ty stmt)
         break;
     case AsyncFunctionDef_kind:
         ret = validate_body(state, stmt->v.AsyncFunctionDef.body, "AsyncFunctionDef") &&
+            validate_type_params(state, stmt->v.AsyncFunctionDef.type_params) &&
             validate_arguments(state, stmt->v.AsyncFunctionDef.args) &&
             validate_exprs(state, stmt->v.AsyncFunctionDef.decorator_list, Load, 0) &&
             (!stmt->v.AsyncFunctionDef.returns ||
@@ -916,8 +953,8 @@ validate_stmt(struct validator *state, stmt_ty stmt)
 static int
 validate_stmts(struct validator *state, asdl_stmt_seq *seq)
 {
-    Py_ssize_t i;
-    for (i = 0; i < asdl_seq_LEN(seq); i++) {
+    assert(!PyErr_Occurred());
+    for (Py_ssize_t i = 0; i < asdl_seq_LEN(seq); i++) {
         stmt_ty stmt = asdl_seq_GET(seq, i);
         if (stmt) {
             if (!validate_stmt(state, stmt))
@@ -935,8 +972,8 @@ validate_stmts(struct validator *state, asdl_stmt_seq *seq)
 static int
 validate_exprs(struct validator *state, asdl_expr_seq *exprs, expr_context_ty ctx, int null_ok)
 {
-    Py_ssize_t i;
-    for (i = 0; i < asdl_seq_LEN(exprs); i++) {
+    assert(!PyErr_Occurred());
+    for (Py_ssize_t i = 0; i < asdl_seq_LEN(exprs); i++) {
         expr_ty expr = asdl_seq_GET(exprs, i);
         if (expr) {
             if (!validate_expr(state, expr, ctx))
@@ -955,8 +992,8 @@ validate_exprs(struct validator *state, asdl_expr_seq *exprs, expr_context_ty ct
 static int
 validate_patterns(struct validator *state, asdl_pattern_seq *patterns, int star_ok)
 {
-    Py_ssize_t i;
-    for (i = 0; i < asdl_seq_LEN(patterns); i++) {
+    assert(!PyErr_Occurred());
+    for (Py_ssize_t i = 0; i < asdl_seq_LEN(patterns); i++) {
         pattern_ty pattern = asdl_seq_GET(patterns, i);
         if (!validate_pattern(state, pattern, star_ok)) {
             return 0;
@@ -965,13 +1002,49 @@ validate_patterns(struct validator *state, asdl_pattern_seq *patterns, int star_
     return 1;
 }
 
+static int
+validate_typeparam(struct validator *state, type_param_ty tp)
+{
+    VALIDATE_POSITIONS(tp);
+    int ret = -1;
+    switch (tp->kind) {
+        case TypeVar_kind:
+            ret = validate_name(tp->v.TypeVar.name) &&
+                (!tp->v.TypeVar.bound ||
+                 validate_expr(state, tp->v.TypeVar.bound, Load));
+            break;
+        case ParamSpec_kind:
+            ret = validate_name(tp->v.ParamSpec.name);
+            break;
+        case TypeVarTuple_kind:
+            ret = validate_name(tp->v.TypeVarTuple.name);
+            break;
+    }
+    return ret;
+}
+
+static int
+validate_type_params(struct validator *state, asdl_type_param_seq *tps)
+{
+    Py_ssize_t i;
+    for (i = 0; i < asdl_seq_LEN(tps); i++) {
+        type_param_ty tp = asdl_seq_GET(tps, i);
+        if (tp) {
+            if (!validate_typeparam(state, tp))
+                return 0;
+        }
+    }
+    return 1;
+}
+
 
 /* See comments in symtable.c. */
-#define COMPILER_STACK_FRAME_SCALE 3
+#define COMPILER_STACK_FRAME_SCALE 2
 
 int
 _PyAST_Validate(mod_ty mod)
 {
+    assert(!PyErr_Occurred());
     int res = -1;
     struct validator state;
     PyThreadState *tstate;
@@ -983,10 +1056,10 @@ _PyAST_Validate(mod_ty mod)
         return 0;
     }
     /* Be careful here to prevent overflow. */
-    int recursion_depth = C_RECURSION_LIMIT - tstate->c_recursion_remaining;
+    int recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
     starting_recursion_depth = recursion_depth * COMPILER_STACK_FRAME_SCALE;
     state.recursion_depth = starting_recursion_depth;
-    state.recursion_limit = C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
+    state.recursion_limit = Py_C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
 
     switch (mod->kind) {
     case Module_kind:
diff --git a/Python/ast_opt.c b/Python/ast_opt.c
index 3883ec9e21c765..04d7ae6eaafbc0 100644
--- a/Python/ast_opt.c
+++ b/Python/ast_opt.c
@@ -1,10 +1,19 @@
 /* AST Optimizer */
 #include "Python.h"
 #include "pycore_ast.h"           // _PyAST_GetDocString()
-#include "pycore_compile.h"       // _PyASTOptimizeState
-#include "pycore_long.h"           // _PyLong
-#include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_format.h"        // F_LJUST
+#include "pycore_long.h"          // _PyLong
+#include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_setobject.h"     // _PySet_NextEntry()
+
+
+typedef struct {
+    int optimize;
+    int ff_features;
+
+    int recursion_depth;            /* current recursion depth */
+    int recursion_limit;            /* recursion limit */
+} _PyASTOptimizeState;
 
 
 static int
@@ -133,15 +142,6 @@ check_complexity(PyObject *obj, Py_ssize_t limit)
         }
         return limit;
     }
-    else if (PyFrozenSet_Check(obj)) {
-        Py_ssize_t i = 0;
-        PyObject *item;
-        Py_hash_t hash;
-        limit -= PySet_GET_SIZE(obj);
-        while (limit >= 0 && _PySet_NextEntry(obj, &i, &item, &hash)) {
-            limit = check_complexity(item, limit);
-        }
-    }
     return limit;
 }
 
@@ -165,9 +165,8 @@ safe_multiply(PyObject *v, PyObject *w)
             return NULL;
         }
     }
-    else if (PyLong_Check(v) && (PyTuple_Check(w) || PyFrozenSet_Check(w))) {
-        Py_ssize_t size = PyTuple_Check(w) ? PyTuple_GET_SIZE(w) :
-                                             PySet_GET_SIZE(w);
+    else if (PyLong_Check(v) && PyTuple_Check(w)) {
+        Py_ssize_t size = PyTuple_GET_SIZE(w);
         if (size) {
             long n = PyLong_AsLong(v);
             if (n < 0 || n > MAX_COLLECTION_SIZE / size) {
@@ -189,8 +188,7 @@ safe_multiply(PyObject *v, PyObject *w)
         }
     }
     else if (PyLong_Check(w) &&
-             (PyTuple_Check(v) || PyFrozenSet_Check(v) ||
-              PyUnicode_Check(v) || PyBytes_Check(v)))
+             (PyTuple_Check(v) || PyUnicode_Check(v) || PyBytes_Check(v)))
     {
         return safe_multiply(w, v);
     }
@@ -642,6 +640,7 @@ static int astfold_withitem(withitem_ty node_, PyArena *ctx_, _PyASTOptimizeStat
 static int astfold_excepthandler(excepthandler_ty node_, PyArena *ctx_, _PyASTOptimizeState *state);
 static int astfold_match_case(match_case_ty node_, PyArena *ctx_, _PyASTOptimizeState *state);
 static int astfold_pattern(pattern_ty node_, PyArena *ctx_, _PyASTOptimizeState *state);
+static int astfold_type_param(type_param_ty node_, PyArena *ctx_, _PyASTOptimizeState *state);
 
 #define CALL(FUNC, TYPE, ARG) \
     if (!FUNC((ARG), ctx_, state)) \
@@ -880,6 +879,7 @@ astfold_stmt(stmt_ty node_, PyArena *ctx_, _PyASTOptimizeState *state)
     }
     switch (node_->kind) {
     case FunctionDef_kind:
+        CALL_SEQ(astfold_type_param, type_param, node_->v.FunctionDef.type_params);
         CALL(astfold_arguments, arguments_ty, node_->v.FunctionDef.args);
         CALL(astfold_body, asdl_seq, node_->v.FunctionDef.body);
         CALL_SEQ(astfold_expr, expr, node_->v.FunctionDef.decorator_list);
@@ -888,6 +888,7 @@ astfold_stmt(stmt_ty node_, PyArena *ctx_, _PyASTOptimizeState *state)
         }
         break;
     case AsyncFunctionDef_kind:
+        CALL_SEQ(astfold_type_param, type_param, node_->v.AsyncFunctionDef.type_params);
         CALL(astfold_arguments, arguments_ty, node_->v.AsyncFunctionDef.args);
         CALL(astfold_body, asdl_seq, node_->v.AsyncFunctionDef.body);
         CALL_SEQ(astfold_expr, expr, node_->v.AsyncFunctionDef.decorator_list);
@@ -896,6 +897,7 @@ astfold_stmt(stmt_ty node_, PyArena *ctx_, _PyASTOptimizeState *state)
         }
         break;
     case ClassDef_kind:
+        CALL_SEQ(astfold_type_param, type_param, node_->v.ClassDef.type_params);
         CALL_SEQ(astfold_expr, expr, node_->v.ClassDef.bases);
         CALL_SEQ(astfold_keyword, keyword, node_->v.ClassDef.keywords);
         CALL(astfold_body, asdl_seq, node_->v.ClassDef.body);
@@ -922,6 +924,11 @@ astfold_stmt(stmt_ty node_, PyArena *ctx_, _PyASTOptimizeState *state)
         }
         CALL_OPT(astfold_expr, expr_ty, node_->v.AnnAssign.value);
         break;
+    case TypeAlias_kind:
+        CALL(astfold_expr, expr_ty, node_->v.TypeAlias.name);
+        CALL_SEQ(astfold_type_param, type_param, node_->v.TypeAlias.type_params);
+        CALL(astfold_expr, expr_ty, node_->v.TypeAlias.value);
+        break;
     case For_kind:
         CALL(astfold_expr, expr_ty, node_->v.For.target);
         CALL(astfold_expr, expr_ty, node_->v.For.iter);
@@ -1074,38 +1081,57 @@ astfold_match_case(match_case_ty node_, PyArena *ctx_, _PyASTOptimizeState *stat
     return 1;
 }
 
+static int
+astfold_type_param(type_param_ty node_, PyArena *ctx_, _PyASTOptimizeState *state)
+{
+    switch (node_->kind) {
+        case TypeVar_kind:
+            CALL_OPT(astfold_expr, expr_ty, node_->v.TypeVar.bound);
+            break;
+        case ParamSpec_kind:
+            break;
+        case TypeVarTuple_kind:
+            break;
+    }
+    return 1;
+}
+
 #undef CALL
 #undef CALL_OPT
 #undef CALL_SEQ
 
 /* See comments in symtable.c. */
-#define COMPILER_STACK_FRAME_SCALE 3
+#define COMPILER_STACK_FRAME_SCALE 2
 
 int
-_PyAST_Optimize(mod_ty mod, PyArena *arena, _PyASTOptimizeState *state)
+_PyAST_Optimize(mod_ty mod, PyArena *arena, int optimize, int ff_features)
 {
     PyThreadState *tstate;
     int starting_recursion_depth;
 
+    _PyASTOptimizeState state;
+    state.optimize = optimize;
+    state.ff_features = ff_features;
+
     /* Setup recursion depth check counters */
     tstate = _PyThreadState_GET();
     if (!tstate) {
         return 0;
     }
     /* Be careful here to prevent overflow. */
-    int recursion_depth = C_RECURSION_LIMIT - tstate->c_recursion_remaining;
+    int recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
     starting_recursion_depth = recursion_depth * COMPILER_STACK_FRAME_SCALE;
-    state->recursion_depth = starting_recursion_depth;
-    state->recursion_limit = C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
+    state.recursion_depth = starting_recursion_depth;
+    state.recursion_limit = Py_C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
 
-    int ret = astfold_mod(mod, arena, state);
+    int ret = astfold_mod(mod, arena, &state);
     assert(ret || PyErr_Occurred());
 
     /* Check that the recursion depth counting balanced correctly */
-    if (ret && state->recursion_depth != starting_recursion_depth) {
+    if (ret && state.recursion_depth != starting_recursion_depth) {
         PyErr_Format(PyExc_SystemError,
             "AST optimizer recursion depth mismatch (before=%d, after=%d)",
-            starting_recursion_depth, state->recursion_depth);
+            starting_recursion_depth, state.recursion_depth);
         return 0;
     }
 
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index ddddc03ca316e0..960bca01990c83 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1,19 +1,26 @@
 /* Built-in functions */
 
 #include "Python.h"
-#include <ctype.h>
 #include "pycore_ast.h"           // _PyAST_Validate()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"         // _PyEval_Vector()
 #include "pycore_compile.h"       // _PyAST_Compile()
 #include "pycore_long.h"          // _PyLong_CompactValue
+#include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_object.h"        // _Py_AddToAllObjects()
 #include "pycore_pyerrors.h"      // _PyErr_NoMemory()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_pythonrun.h"     // _Py_SourceAsString()
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
 #include "pycore_tuple.h"         // _PyTuple_FromArray()
-#include "pycore_ceval.h"         // _PyEval_Vector()
 
 #include "clinic/bltinmodule.c.h"
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // isatty()
+#endif
+
+
 static PyObject*
 update_bases(PyObject *bases, PyObject *const *args, Py_ssize_t nargs)
 {
@@ -33,7 +40,7 @@ update_bases(PyObject *bases, PyObject *const *args, Py_ssize_t nargs)
             }
             continue;
         }
-        if (_PyObject_LookupAttr(base, &_Py_ID(__mro_entries__), &meth) < 0) {
+        if (PyObject_GetOptionalAttr(base, &_Py_ID(__mro_entries__), &meth) < 0) {
             goto error;
         }
         if (!meth) {
@@ -133,18 +140,16 @@ builtin___build_class__(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
             goto error;
         }
 
-        meta = _PyDict_GetItemWithError(mkw, &_Py_ID(metaclass));
+        if (PyDict_GetItemRef(mkw, &_Py_ID(metaclass), &meta) < 0) {
+            goto error;
+        }
         if (meta != NULL) {
-            Py_INCREF(meta);
             if (PyDict_DelItem(mkw, &_Py_ID(metaclass)) < 0) {
                 goto error;
             }
             /* metaclass is explicitly given, check if it's indeed a class */
             isclass = PyType_Check(meta);
         }
-        else if (PyErr_Occurred()) {
-            goto error;
-        }
     }
     if (meta == NULL) {
         /* if there are no bases, use type: */
@@ -174,7 +179,7 @@ builtin___build_class__(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
     }
     /* else: meta is not a class, so we cannot do the metaclass
        calculation, so we will use the explicitly given object as it is */
-    if (_PyObject_LookupAttr(meta, &_Py_ID(__prepare__), &prep) < 0) {
+    if (PyObject_GetOptionalAttr(meta, &_Py_ID(__prepare__), &prep) < 0) {
         ns = NULL;
     }
     else if (prep == NULL) {
@@ -474,6 +479,7 @@ builtin_breakpoint(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
 
 PyDoc_STRVAR(breakpoint_doc,
 "breakpoint(*args, **kws)\n\
+--\n\
 \n\
 Call sys.breakpointhook(*args, **kws).  sys.breakpointhook() must accept\n\
 whatever arguments are passed.\n\
@@ -618,7 +624,8 @@ static PyMethodDef filter_methods[] = {
 };
 
 PyDoc_STRVAR(filter_doc,
-"filter(function or None, iterable) --> filter object\n\
+"filter(function, iterable, /)\n\
+--\n\
 \n\
 Return an iterator yielding those items of iterable for which function(item)\n\
 is true. If function is None, return the items that are true.");
@@ -802,23 +809,40 @@ builtin_compile_impl(PyObject *module, PyObject *source, PyObject *filename,
     if (is_ast == -1)
         goto error;
     if (is_ast) {
-        if (flags & PyCF_ONLY_AST) {
+        if ((flags & PyCF_OPTIMIZED_AST) == PyCF_ONLY_AST) {
+            // return an un-optimized AST
             result = Py_NewRef(source);
         }
         else {
-            PyArena *arena;
-            mod_ty mod;
+            // Return an optimized AST or code object
 
-            arena = _PyArena_New();
-            if (arena == NULL)
-                goto error;
-            mod = PyAST_obj2mod(source, arena, compile_mode);
-            if (mod == NULL || !_PyAST_Validate(mod)) {
-                _PyArena_Free(arena);
+            PyArena *arena = _PyArena_New();
+            if (arena == NULL) {
                 goto error;
             }
-            result = (PyObject*)_PyAST_Compile(mod, filename,
-                                               &cf, optimize, arena);
+
+            if (flags & PyCF_ONLY_AST) {
+                mod_ty mod = PyAST_obj2mod(source, arena, compile_mode);
+                if (mod == NULL || !_PyAST_Validate(mod)) {
+                    _PyArena_Free(arena);
+                    goto error;
+                }
+                if (_PyCompile_AstOptimize(mod, filename, &cf, optimize,
+                                           arena) < 0) {
+                    _PyArena_Free(arena);
+                    goto error;
+                }
+                result = PyAST_mod2obj(mod);
+            }
+            else {
+                mod_ty mod = PyAST_obj2mod(source, arena, compile_mode);
+                if (mod == NULL || !_PyAST_Validate(mod)) {
+                    _PyArena_Free(arena);
+                    goto error;
+                }
+                result = (PyObject*)_PyAST_Compile(mod, filename,
+                                                   &cf, optimize, arena);
+            }
             _PyArena_Free(arena);
         }
         goto finally;
@@ -840,33 +864,31 @@ builtin_compile_impl(PyObject *module, PyObject *source, PyObject *filename,
     return result;
 }
 
-/*[clinic input]
-dir as builtin_dir
-
-    arg: object = NULL
-    /
-
-Show attributes of an object.
-
-If called without an argument, return the names in the current scope.
-Else, return an alphabetized list of names comprising (some of) the attributes
-of the given object, and of attributes reachable from it.
-If the object supplies a method named __dir__, it will be used; otherwise
-the default dir() logic is used and returns:
-  for a module object: the module's attributes.
-  for a class object:  its attributes, and recursively the attributes
-    of its bases.
-  for any other object: its attributes, its class's attributes, and
-    recursively the attributes of its class's base classes.
-[clinic start generated code]*/
-
+/* AC: cannot convert yet, as needs PEP 457 group support in inspect */
 static PyObject *
-builtin_dir_impl(PyObject *module, PyObject *arg)
-/*[clinic end generated code: output=24f2c7a52c1e3b08 input=ed6d6ccb13d52251]*/
+builtin_dir(PyObject *self, PyObject *args)
 {
+    PyObject *arg = NULL;
+
+    if (!PyArg_UnpackTuple(args, "dir", 0, 1, &arg))
+        return NULL;
     return PyObject_Dir(arg);
 }
 
+PyDoc_STRVAR(dir_doc,
+"dir([object]) -> list of strings\n"
+"\n"
+"If called without an argument, return the names in the current scope.\n"
+"Else, return an alphabetized list of names comprising (some of) the attributes\n"
+"of the given object, and of attributes reachable from it.\n"
+"If the object supplies a method named __dir__, it will be used; otherwise\n"
+"the default dir() logic is used and returns:\n"
+"  for a module object: the module's attributes.\n"
+"  for a class object:  its attributes, and recursively the attributes\n"
+"    of its bases.\n"
+"  for any other object: its attributes, its class's attributes, and\n"
+"    recursively the attributes of its class's base classes.");
+
 /*[clinic input]
 divmod as builtin_divmod
 
@@ -907,7 +929,7 @@ builtin_eval_impl(PyObject *module, PyObject *source, PyObject *globals,
                   PyObject *locals)
 /*[clinic end generated code: output=0a0824aa70093116 input=11ee718a8640e527]*/
 {
-    PyObject *result, *source_copy;
+    PyObject *result = NULL, *source_copy;
     const char *str;
 
     if (locals != Py_None && !PyMapping_Check(locals)) {
@@ -923,19 +945,25 @@ builtin_eval_impl(PyObject *module, PyObject *source, PyObject *globals,
     if (globals == Py_None) {
         globals = PyEval_GetGlobals();
         if (locals == Py_None) {
-            locals = PyEval_GetLocals();
+            locals = _PyEval_GetFrameLocals();
             if (locals == NULL)
                 return NULL;
         }
+        else {
+            Py_INCREF(locals);
+        }
     }
     else if (locals == Py_None)
-        locals = globals;
+        locals = Py_NewRef(globals);
+    else {
+        Py_INCREF(locals);
+    }
 
     if (globals == NULL || locals == NULL) {
         PyErr_SetString(PyExc_TypeError,
             "eval must be given globals and locals "
             "when called without a frame");
-        return NULL;
+        goto error;
     }
 
     int r = PyDict_Contains(globals, &_Py_ID(__builtins__));
@@ -943,34 +971,38 @@ builtin_eval_impl(PyObject *module, PyObject *source, PyObject *globals,
         r = PyDict_SetItem(globals, &_Py_ID(__builtins__), PyEval_GetBuiltins());
     }
     if (r < 0) {
-        return NULL;
+        goto error;
     }
 
     if (PyCode_Check(source)) {
         if (PySys_Audit("exec", "O", source) < 0) {
-            return NULL;
+            goto error;
         }
 
         if (PyCode_GetNumFree((PyCodeObject *)source) > 0) {
             PyErr_SetString(PyExc_TypeError,
                 "code object passed to eval() may not contain free variables");
-            return NULL;
+            goto error;
         }
-        return PyEval_EvalCode(source, globals, locals);
+        result = PyEval_EvalCode(source, globals, locals);
     }
+    else {
+        PyCompilerFlags cf = _PyCompilerFlags_INIT;
+        cf.cf_flags = PyCF_SOURCE_IS_UTF8;
+        str = _Py_SourceAsString(source, "eval", "string, bytes or code", &cf, &source_copy);
+        if (str == NULL)
+            goto error;
 
-    PyCompilerFlags cf = _PyCompilerFlags_INIT;
-    cf.cf_flags = PyCF_SOURCE_IS_UTF8;
-    str = _Py_SourceAsString(source, "eval", "string, bytes or code", &cf, &source_copy);
-    if (str == NULL)
-        return NULL;
+        while (*str == ' ' || *str == '\t')
+            str++;
 
-    while (*str == ' ' || *str == '\t')
-        str++;
+        (void)PyEval_MergeCompilerFlags(&cf);
+        result = PyRun_StringFlags(str, Py_eval_input, globals, locals, &cf);
+        Py_XDECREF(source_copy);
+    }
 
-    (void)PyEval_MergeCompilerFlags(&cf);
-    result = PyRun_StringFlags(str, Py_eval_input, globals, locals, &cf);
-    Py_XDECREF(source_copy);
+  error:
+    Py_XDECREF(locals);
     return result;
 }
 
@@ -1005,36 +1037,43 @@ builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
     if (globals == Py_None) {
         globals = PyEval_GetGlobals();
         if (locals == Py_None) {
-            locals = PyEval_GetLocals();
+            locals = _PyEval_GetFrameLocals();
             if (locals == NULL)
                 return NULL;
         }
+        else {
+            Py_INCREF(locals);
+        }
         if (!globals || !locals) {
             PyErr_SetString(PyExc_SystemError,
                             "globals and locals cannot be NULL");
             return NULL;
         }
     }
-    else if (locals == Py_None)
-        locals = globals;
+    else if (locals == Py_None) {
+        locals = Py_NewRef(globals);
+    }
+    else {
+        Py_INCREF(locals);
+    }
 
     if (!PyDict_Check(globals)) {
         PyErr_Format(PyExc_TypeError, "exec() globals must be a dict, not %.100s",
                      Py_TYPE(globals)->tp_name);
-        return NULL;
+        goto error;
     }
     if (!PyMapping_Check(locals)) {
         PyErr_Format(PyExc_TypeError,
             "locals must be a mapping or None, not %.100s",
             Py_TYPE(locals)->tp_name);
-        return NULL;
+        goto error;
     }
     int r = PyDict_Contains(globals, &_Py_ID(__builtins__));
     if (r == 0) {
         r = PyDict_SetItem(globals, &_Py_ID(__builtins__), PyEval_GetBuiltins());
     }
     if (r < 0) {
-        return NULL;
+        goto error;
     }
 
     if (closure == Py_None) {
@@ -1047,7 +1086,7 @@ builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
             if (closure) {
                 PyErr_SetString(PyExc_TypeError,
                     "cannot use a closure with this code object");
-                return NULL;
+                goto error;
             }
         } else {
             int closure_is_ok =
@@ -1067,12 +1106,12 @@ builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
                 PyErr_Format(PyExc_TypeError,
                     "code object requires a closure of exactly length %zd",
                     num_free);
-                return NULL;
+                goto error;
             }
         }
 
         if (PySys_Audit("exec", "O", source) < 0) {
-            return NULL;
+            goto error;
         }
 
         if (!closure) {
@@ -1099,7 +1138,7 @@ builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
                                        "string, bytes or code", &cf,
                                        &source_copy);
         if (str == NULL)
-            return NULL;
+            goto error;
         if (PyEval_MergeCompilerFlags(&cf))
             v = PyRun_StringFlags(str, Py_file_input, globals,
                                   locals, &cf);
@@ -1108,45 +1147,47 @@ builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
         Py_XDECREF(source_copy);
     }
     if (v == NULL)
-        return NULL;
+        goto error;
+    Py_DECREF(locals);
     Py_DECREF(v);
     Py_RETURN_NONE;
-}
-
-
-/*[clinic input]
-getattr as builtin_getattr
 
-    object: object
-    name: object
-    default: object = NULL
-    /
-
-Get a named attribute from an object.
+  error:
+    Py_XDECREF(locals);
+    return NULL;
+}
 
-getattr(x, 'y') is equivalent to x.y
-When a default argument is given, it is returned when the attribute doesn't
-exist; without it, an exception is raised in that case.
-[clinic start generated code]*/
 
+/* AC: cannot convert yet, as needs PEP 457 group support in inspect */
 static PyObject *
-builtin_getattr_impl(PyObject *module, PyObject *object, PyObject *name,
-                     PyObject *default_value)
-/*[clinic end generated code: output=74ad0e225e3f701c input=d7562cd4c3556171]*/
+builtin_getattr(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
 {
-    PyObject *result;
+    PyObject *v, *name, *result;
 
-    if (default_value != NULL) {
-        if (_PyObject_LookupAttr(object, name, &result) == 0) {
-            return Py_NewRef(default_value);
+    if (!_PyArg_CheckPositional("getattr", nargs, 2, 3))
+        return NULL;
+
+    v = args[0];
+    name = args[1];
+    if (nargs > 2) {
+        if (PyObject_GetOptionalAttr(v, name, &result) == 0) {
+            PyObject *dflt = args[2];
+            return Py_NewRef(dflt);
         }
     }
     else {
-        result = PyObject_GetAttr(object, name);
+        result = PyObject_GetAttr(v, name);
     }
     return result;
 }
 
+PyDoc_STRVAR(getattr_doc,
+"getattr(object, name[, default]) -> value\n\
+\n\
+Get a named attribute from an object; getattr(x, 'y') is equivalent to x.y.\n\
+When a default argument is given, it is returned when the attribute doesn't\n\
+exist; without it, an exception is raised in that case.");
+
 
 /*[clinic input]
 globals as builtin_globals
@@ -1186,7 +1227,7 @@ builtin_hasattr_impl(PyObject *module, PyObject *obj, PyObject *name)
 {
     PyObject *v;
 
-    if (_PyObject_LookupAttr(obj, name, &v) < 0) {
+    if (PyObject_GetOptionalAttr(obj, name, &v) < 0) {
         return NULL;
     }
     if (v == NULL) {
@@ -1407,7 +1448,8 @@ static PyMethodDef map_methods[] = {
 
 
 PyDoc_STRVAR(map_doc,
-"map(func, *iterables) --> map object\n\
+"map(function, /, *iterables)\n\
+--\n\
 \n\
 Make an iterator that computes the function using arguments from\n\
 each of the iterables.  Stops when the shortest iterable is exhausted.");
@@ -1458,43 +1500,34 @@ PyTypeObject PyMap_Type = {
 };
 
 
-/*[clinic input]
-next as builtin_next
-
-    iterator: object
-    default: object = NULL
-    /
-
-Return the next item from the iterator.
-
-If default is given and the iterator is exhausted,
-it is returned instead of raising StopIteration.
-[clinic start generated code]*/
-
+/* AC: cannot convert yet, as needs PEP 457 group support in inspect */
 static PyObject *
-builtin_next_impl(PyObject *module, PyObject *iterator,
-                  PyObject *default_value)
-/*[clinic end generated code: output=a38a94eeb447fef9 input=180f9984f182020f]*/
+builtin_next(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
 {
-    PyObject *res;
+    PyObject *it, *res;
 
-    if (!PyIter_Check(iterator)) {
+    if (!_PyArg_CheckPositional("next", nargs, 1, 2))
+        return NULL;
+
+    it = args[0];
+    if (!PyIter_Check(it)) {
         PyErr_Format(PyExc_TypeError,
             "'%.200s' object is not an iterator",
-            Py_TYPE(iterator)->tp_name);
+            Py_TYPE(it)->tp_name);
         return NULL;
     }
 
-    res = (*Py_TYPE(iterator)->tp_iternext)(iterator);
+    res = (*Py_TYPE(it)->tp_iternext)(it);
     if (res != NULL) {
         return res;
-    } else if (default_value != NULL) {
+    } else if (nargs > 1) {
+        PyObject *def = args[1];
         if (PyErr_Occurred()) {
             if(!PyErr_ExceptionMatches(PyExc_StopIteration))
                 return NULL;
             PyErr_Clear();
         }
-        return Py_NewRef(default_value);
+        return Py_NewRef(def);
     } else if (PyErr_Occurred()) {
         return NULL;
     } else {
@@ -1503,6 +1536,12 @@ builtin_next_impl(PyObject *module, PyObject *iterator,
     }
 }
 
+PyDoc_STRVAR(next_doc,
+"next(iterator[, default])\n\
+\n\
+Return the next item from the iterator. If default is given and the iterator\n\
+is exhausted, it is returned instead of raising StopIteration.");
+
 
 /*[clinic input]
 setattr as builtin_setattr
@@ -1544,8 +1583,9 @@ static PyObject *
 builtin_delattr_impl(PyObject *module, PyObject *obj, PyObject *name)
 /*[clinic end generated code: output=85134bc58dff79fa input=164865623abe7216]*/
 {
-    if (PyObject_SetAttr(obj, name, (PyObject *)NULL) != 0)
+    if (PyObject_DelAttr(obj, name) < 0) {
         return NULL;
+    }
     Py_RETURN_NONE;
 }
 
@@ -1595,33 +1635,34 @@ builtin_hex(PyObject *module, PyObject *number)
 }
 
 
-/*[clinic input]
-iter as builtin_iter
-
-    object: object
-    sentinel: object = NULL
-    /
-
-Get an iterator from an object.
-
-In the first form, the argument must supply its own iterator, or be a sequence.
-In the second form, the callable is called until it returns the sentinel.
-[clinic start generated code]*/
-
+/* AC: cannot convert yet, as needs PEP 457 group support in inspect */
 static PyObject *
-builtin_iter_impl(PyObject *module, PyObject *object, PyObject *sentinel)
-/*[clinic end generated code: output=12cf64203c195a94 input=a5d64d9d81880ba6]*/
+builtin_iter(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
 {
-    if (sentinel == NULL)
-        return PyObject_GetIter(object);
-    if (!PyCallable_Check(object)) {
+    PyObject *v;
+
+    if (!_PyArg_CheckPositional("iter", nargs, 1, 2))
+        return NULL;
+    v = args[0];
+    if (nargs == 1)
+        return PyObject_GetIter(v);
+    if (!PyCallable_Check(v)) {
         PyErr_SetString(PyExc_TypeError,
-                        "iter(object, sentinel): object must be callable");
+                        "iter(v, w): v must be callable");
         return NULL;
     }
-    return PyCallIter_New(object, sentinel);
+    PyObject *sentinel = args[1];
+    return PyCallIter_New(v, sentinel);
 }
 
+PyDoc_STRVAR(iter_doc,
+"iter(iterable) -> iterator\n\
+iter(callable, sentinel) -> iterator\n\
+\n\
+Get an iterator from an object.  In the first form, the argument must\n\
+supply its own iterator, or be a sequence.\n\
+In the second form, the callable is called until it returns the sentinel.");
+
 
 /*[clinic input]
 aiter as builtin_aiter
@@ -1720,10 +1761,7 @@ static PyObject *
 builtin_locals_impl(PyObject *module)
 /*[clinic end generated code: output=b46c94015ce11448 input=7874018d478d5c4b]*/
 {
-    PyObject *d;
-
-    d = PyEval_GetLocals();
-    return Py_XNewRef(d);
+    return _PyEval_GetFrameLocals();
 }
 
 
@@ -1850,7 +1888,7 @@ min(arg1, arg2, *args, *[, key=func]) -> value\n\
 With a single iterable argument, return its smallest item. The\n\
 default keyword-only argument specifies an object to return if\n\
 the provided iterable is empty.\n\
-With two or more arguments, return the smallest argument.");
+With two or more positional arguments, return the smallest argument.");
 
 
 /* AC: cannot convert yet, waiting for *args support */
@@ -1867,7 +1905,7 @@ max(arg1, arg2, *args, *[, key=func]) -> value\n\
 With a single iterable argument, return its biggest item. The\n\
 default keyword-only argument specifies an object to return if\n\
 the provided iterable is empty.\n\
-With two or more arguments, return the largest argument.");
+With two or more positional arguments, return the largest argument.");
 
 
 /*[clinic input]
@@ -1914,8 +1952,6 @@ builtin_ord(PyObject *module, PyObject *c)
         }
     }
     else if (PyUnicode_Check(c)) {
-        if (PyUnicode_READY(c) == -1)
-            return NULL;
         size = PyUnicode_GET_LENGTH(c);
         if (size == 1) {
             ord = (long)PyUnicode_READ_CHAR(c, 0);
@@ -2052,11 +2088,9 @@ builtin_print_impl(PyObject *module, PyObject *args, PyObject *sep,
     }
 
     if (flush) {
-        PyObject *tmp = PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
-        if (tmp == NULL) {
+        if (_PyFile_Flush(file) < 0) {
             return NULL;
         }
-        Py_DECREF(tmp);
     }
 
     Py_RETURN_NONE;
@@ -2115,11 +2149,9 @@ builtin_input_impl(PyObject *module, PyObject *prompt)
     }
 
     /* First of all, flush stderr */
-    tmp = PyObject_CallMethodNoArgs(ferr, &_Py_ID(flush));
-    if (tmp == NULL)
+    if (_PyFile_Flush(ferr) < 0) {
         PyErr_Clear();
-    else
-        Py_DECREF(tmp);
+    }
 
     /* We should only use (GNU) readline if Python's sys.stdin and
        sys.stdout are the same as C's stdin and stdout, because we
@@ -2164,38 +2196,60 @@ builtin_input_impl(PyObject *module, PyObject *prompt)
 
         /* stdin is a text stream, so it must have an encoding. */
         stdin_encoding = PyObject_GetAttr(fin, &_Py_ID(encoding));
+        if (stdin_encoding == NULL) {
+            tty = 0;
+            goto _readline_errors;
+        }
         stdin_errors = PyObject_GetAttr(fin, &_Py_ID(errors));
-        if (!stdin_encoding || !stdin_errors ||
-                !PyUnicode_Check(stdin_encoding) ||
-                !PyUnicode_Check(stdin_errors)) {
+        if (stdin_errors == NULL) {
+            tty = 0;
+            goto _readline_errors;
+        }
+        if (!PyUnicode_Check(stdin_encoding) ||
+            !PyUnicode_Check(stdin_errors))
+        {
             tty = 0;
             goto _readline_errors;
         }
         stdin_encoding_str = PyUnicode_AsUTF8(stdin_encoding);
+        if (stdin_encoding_str == NULL) {
+            goto _readline_errors;
+        }
         stdin_errors_str = PyUnicode_AsUTF8(stdin_errors);
-        if (!stdin_encoding_str || !stdin_errors_str)
+        if (stdin_errors_str == NULL) {
             goto _readline_errors;
-        tmp = PyObject_CallMethodNoArgs(fout, &_Py_ID(flush));
-        if (tmp == NULL)
+        }
+        if (_PyFile_Flush(fout) < 0) {
             PyErr_Clear();
-        else
-            Py_DECREF(tmp);
+        }
         if (prompt != NULL) {
             /* We have a prompt, encode it as stdout would */
             const char *stdout_encoding_str, *stdout_errors_str;
             PyObject *stringpo;
             stdout_encoding = PyObject_GetAttr(fout, &_Py_ID(encoding));
+            if (stdout_encoding == NULL) {
+                tty = 0;
+                goto _readline_errors;
+            }
             stdout_errors = PyObject_GetAttr(fout, &_Py_ID(errors));
-            if (!stdout_encoding || !stdout_errors ||
-                    !PyUnicode_Check(stdout_encoding) ||
-                    !PyUnicode_Check(stdout_errors)) {
+            if (stdout_errors == NULL) {
+                tty = 0;
+                goto _readline_errors;
+            }
+            if (!PyUnicode_Check(stdout_encoding) ||
+                !PyUnicode_Check(stdout_errors))
+            {
                 tty = 0;
                 goto _readline_errors;
             }
             stdout_encoding_str = PyUnicode_AsUTF8(stdout_encoding);
+            if (stdout_encoding_str == NULL) {
+                goto _readline_errors;
+            }
             stdout_errors_str = PyUnicode_AsUTF8(stdout_errors);
-            if (!stdout_encoding_str || !stdout_errors_str)
+            if (stdout_errors_str == NULL) {
                 goto _readline_errors;
+            }
             stringpo = PyObject_Str(prompt);
             if (stringpo == NULL)
                 goto _readline_errors;
@@ -2208,6 +2262,11 @@ builtin_input_impl(PyObject *module, PyObject *prompt)
                 goto _readline_errors;
             assert(PyBytes_Check(po));
             promptstr = PyBytes_AS_STRING(po);
+            if ((Py_ssize_t)strlen(promptstr) != PyBytes_GET_SIZE(po)) {
+                PyErr_SetString(PyExc_ValueError,
+                        "input: prompt string cannot contain null characters");
+                goto _readline_errors;
+            }
         }
         else {
             po = NULL;
@@ -2270,11 +2329,9 @@ builtin_input_impl(PyObject *module, PyObject *prompt)
         if (PyFile_WriteObject(prompt, fout, Py_PRINT_RAW) != 0)
             return NULL;
     }
-    tmp = PyObject_CallMethodNoArgs(fout, &_Py_ID(flush));
-    if (tmp == NULL)
+    if (_PyFile_Flush(fout) < 0) {
         PyErr_Clear();
-    else
-        Py_DECREF(tmp);
+    }
     return PyFile_GetLine(fin, -1);
 }
 
@@ -2400,29 +2457,20 @@ builtin_sorted(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
 }
 
 
-/*[clinic input]
-vars as builtin_vars
-
-    object: object = NULL
-    /
-
-Show vars.
-
-Without arguments, equivalent to locals().
-With an argument, equivalent to object.__dict__.
-[clinic start generated code]*/
-
+/* AC: cannot convert yet, as needs PEP 457 group support in inspect */
 static PyObject *
-builtin_vars_impl(PyObject *module, PyObject *object)
-/*[clinic end generated code: output=840a7f64007a3e0a input=80cbdef9182c4ba3]*/
+builtin_vars(PyObject *self, PyObject *args)
 {
+    PyObject *v = NULL;
     PyObject *d;
 
-    if (object == NULL) {
-        d = Py_XNewRef(PyEval_GetLocals());
+    if (!PyArg_UnpackTuple(args, "vars", 0, 1, &v))
+        return NULL;
+    if (v == NULL) {
+        d = _PyEval_GetFrameLocals();
     }
     else {
-        if (_PyObject_LookupAttr(object, &_Py_ID(__dict__), &d) == 0) {
+        if (PyObject_GetOptionalAttr(v, &_Py_ID(__dict__), &d) == 0) {
             PyErr_SetString(PyExc_TypeError,
                 "vars() argument must have __dict__ attribute");
         }
@@ -2430,6 +2478,12 @@ builtin_vars_impl(PyObject *module, PyObject *object)
     return d;
 }
 
+PyDoc_STRVAR(vars_doc,
+"vars([object]) -> dictionary\n\
+\n\
+Without arguments, equivalent to locals().\n\
+With an argument, equivalent to object.__dict__.");
+
 
 /*[clinic input]
 sum as builtin_sum
@@ -2562,7 +2616,10 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start)
             }
             if (PyFloat_CheckExact(item)) {
                 // Improved Kahan–Babuška algorithm by Arnold Neumaier
-                // https://www.mat.univie.ac.at/~neum/scan/01.pdf
+                // Neumaier, A. (1974), Rundungsfehleranalyse einiger Verfahren
+                // zur Summation endlicher Summen.  Z. angew. Math. Mech.,
+                // 54: 39-51. https://doi.org/10.1002/zamm.19740540106
+                // https://en.wikipedia.org/wiki/Kahan_summation_algorithm#Further_enhancements
                 double x = PyFloat_AS_DOUBLE(item);
                 double t = f_result + x;
                 if (fabs(f_result) >= fabs(x)) {
@@ -2906,10 +2963,8 @@ static PyMethodDef zip_methods[] = {
 };
 
 PyDoc_STRVAR(zip_doc,
-"zip(*iterables, strict=False) --> Yield tuples until an input is exhausted.\n\
-\n\
-   >>> list(zip('abcdefg', range(3), range(4)))\n\
-   [('a', 0, 0), ('b', 1, 1), ('c', 2, 2)]\n\
+"zip(*iterables, strict=False)\n\
+--\n\
 \n\
 The zip object yields n-length tuples, where n is the number of iterables\n\
 passed as positional arguments to zip().  The i-th element in every tuple\n\
@@ -2917,7 +2972,10 @@ comes from the i-th iterable argument to zip().  This continues until the\n\
 shortest argument is exhausted.\n\
 \n\
 If strict is true and one of the arguments is exhausted before the others,\n\
-raise a ValueError.");
+raise a ValueError.\n\
+\n\
+   >>> list(zip('abcdefg', range(3), range(4)))\n\
+   [('a', 0, 0), ('b', 1, 1), ('c', 2, 2)]");
 
 PyTypeObject PyZip_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
@@ -2978,12 +3036,12 @@ static PyMethodDef builtin_methods[] = {
     BUILTIN_CHR_METHODDEF
     BUILTIN_COMPILE_METHODDEF
     BUILTIN_DELATTR_METHODDEF
-    BUILTIN_DIR_METHODDEF
+    {"dir", builtin_dir, METH_VARARGS, dir_doc},
     BUILTIN_DIVMOD_METHODDEF
     BUILTIN_EVAL_METHODDEF
     BUILTIN_EXEC_METHODDEF
     BUILTIN_FORMAT_METHODDEF
-    BUILTIN_GETATTR_METHODDEF
+    {"getattr", _PyCFunction_CAST(builtin_getattr), METH_FASTCALL, getattr_doc},
     BUILTIN_GLOBALS_METHODDEF
     BUILTIN_HASATTR_METHODDEF
     BUILTIN_HASH_METHODDEF
@@ -2992,13 +3050,13 @@ static PyMethodDef builtin_methods[] = {
     BUILTIN_INPUT_METHODDEF
     BUILTIN_ISINSTANCE_METHODDEF
     BUILTIN_ISSUBCLASS_METHODDEF
-    BUILTIN_ITER_METHODDEF
+    {"iter", _PyCFunction_CAST(builtin_iter), METH_FASTCALL, iter_doc},
     BUILTIN_AITER_METHODDEF
     BUILTIN_LEN_METHODDEF
     BUILTIN_LOCALS_METHODDEF
     {"max", _PyCFunction_CAST(builtin_max), METH_VARARGS | METH_KEYWORDS, max_doc},
     {"min", _PyCFunction_CAST(builtin_min), METH_VARARGS | METH_KEYWORDS, min_doc},
-    BUILTIN_NEXT_METHODDEF
+    {"next", _PyCFunction_CAST(builtin_next), METH_FASTCALL, next_doc},
     BUILTIN_ANEXT_METHODDEF
     BUILTIN_OCT_METHODDEF
     BUILTIN_ORD_METHODDEF
@@ -3009,7 +3067,7 @@ static PyMethodDef builtin_methods[] = {
     BUILTIN_SETATTR_METHODDEF
     BUILTIN_SORTED_METHODDEF
     BUILTIN_SUM_METHODDEF
-    BUILTIN_VARS_METHODDEF
+    {"vars",            builtin_vars,       METH_VARARGS, vars_doc},
     {NULL,              NULL},
 };
 
@@ -3057,7 +3115,7 @@ _PyBuiltin_Init(PyInterpreterState *interp)
      * result, programs leaking references to None and False (etc)
      * couldn't be diagnosed by examining sys.getobjects(0).
      */
-#define ADD_TO_ALL(OBJECT) _Py_AddToAllObjects((PyObject *)(OBJECT), 0)
+#define ADD_TO_ALL(OBJECT) _Py_AddToAllObjects((PyObject *)(OBJECT))
 #else
 #define ADD_TO_ALL(OBJECT) (void)0
 #endif
diff --git a/Python/bootstrap_hash.c b/Python/bootstrap_hash.c
index 587063ef1ab29a..92f2301a012c0a 100644
--- a/Python/bootstrap_hash.c
+++ b/Python/bootstrap_hash.c
@@ -1,24 +1,28 @@
 #include "Python.h"
-#include "pycore_initconfig.h"
 #include "pycore_fileutils.h"     // _Py_fstat_noraise()
+#include "pycore_initconfig.h"
+#include "pycore_pylifecycle.h"   // _PyOS_URandomNonblock()
 #include "pycore_runtime.h"       // _PyRuntime
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // close()
+#endif
 #ifdef MS_WINDOWS
 #  include <windows.h>
 #  include <bcrypt.h>
 #else
-#  include <fcntl.h>
+#  include <fcntl.h>              // O_RDONLY
 #  ifdef HAVE_SYS_STAT_H
 #    include <sys/stat.h>
 #  endif
 #  ifdef HAVE_LINUX_RANDOM_H
-#    include <linux/random.h>
+#    include <linux/random.h>     // GRND_NONBLOCK
 #  endif
 #  if defined(HAVE_SYS_RANDOM_H) && (defined(HAVE_GETRANDOM) || defined(HAVE_GETENTROPY))
-#    include <sys/random.h>
+#    include <sys/random.h>       // getrandom()
 #  endif
 #  if !defined(HAVE_GETRANDOM) && defined(HAVE_GETRANDOM_SYSCALL)
-#    include <sys/syscall.h>
+#    include <sys/syscall.h>      // SYS_getrandom
 #  endif
 #endif
 
diff --git a/Python/bytecodes.c b/Python/bytecodes.c
index d84a078f110085..bcad8dcf0e7dab 100644
--- a/Python/bytecodes.c
+++ b/Python/bytecodes.c
@@ -8,61 +8,67 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
-#include "pycore_call.h"          // _PyObject_FastCallDictTstate()
 #include "pycore_ceval.h"         // _PyEval_SignalAsyncExc()
 #include "pycore_code.h"
+#include "pycore_emscripten_signal.h"  // _Py_CHECK_EMSCRIPTEN_SIGNALS
 #include "pycore_function.h"
+#include "pycore_instruments.h"
 #include "pycore_intrinsics.h"
 #include "pycore_long.h"          // _PyLong_GetZero()
-#include "pycore_instruments.h"
-#include "pycore_object.h"        // _PyObject_GC_TRACK()
 #include "pycore_moduleobject.h"  // PyModuleObject
-#include "pycore_opcode.h"        // EXTRA_CASES
+#include "pycore_object.h"        // _PyObject_GC_TRACK()
+#include "pycore_opcode_metadata.h"  // uop names
+#include "pycore_opcode_utils.h"  // MAKE_FUNCTION_*
 #include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
-#include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_range.h"         // _PyRangeIterObject
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "pycore_sliceobject.h"   // _PyBuildSlice_ConsumeRefs
 #include "pycore_sysmodule.h"     // _PySys_Audit()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
 #include "pycore_typeobject.h"    // _PySuper_Lookup()
-#include "pycore_emscripten_signal.h"  // _Py_CHECK_EMSCRIPTEN_SIGNALS
 
 #include "pycore_dict.h"
 #include "dictobject.h"
 #include "pycore_frame.h"
 #include "opcode.h"
+#include "optimizer.h"
 #include "pydtrace.h"
 #include "setobject.h"
-#include "structmember.h"         // struct PyMemberDef, T_OFFSET_EX
+
 
 #define USE_COMPUTED_GOTOS 0
 #include "ceval_macros.h"
 
 /* Flow control macros */
-#define DEOPT_IF(cond, instname) ((void)0)
-#define ERROR_IF(cond, labelname) ((void)0)
 #define GO_TO_INSTRUCTION(instname) ((void)0)
-#define PREDICT(opname) ((void)0)
 
 #define inst(name, ...) case name:
 #define op(name, ...) /* NAME is ignored */
 #define macro(name) static int MACRO_##name
 #define super(name) static int SUPER_##name
 #define family(name, ...) static int family_##name
+#define pseudo(name) static int pseudo_##name
+
+/* Annotations */
+#define guard
+#define override
+#define specializing
 
 // Dummy variables for stack effects.
 static PyObject *value, *value1, *value2, *left, *right, *res, *sum, *prod, *sub;
 static PyObject *container, *start, *stop, *v, *lhs, *rhs, *res2;
 static PyObject *list, *tuple, *dict, *owner, *set, *str, *tup, *map, *keys;
-static PyObject *exit_func, *lasti, *val, *retval, *obj, *iter;
-static PyObject *aiter, *awaitable, *iterable, *w, *exc_value, *bc;
+static PyObject *exit_func, *lasti, *val, *retval, *obj, *iter, *exhausted;
+static PyObject *aiter, *awaitable, *iterable, *w, *exc_value, *bc, *locals;
 static PyObject *orig, *excs, *update, *b, *fromlist, *level, *from;
 static PyObject **pieces, **values;
 static size_t jump;
 // Dummy variables for cache effects
 static uint16_t invert, counter, index, hint;
+#define unused 0  // Used in a macro def, can't be static
 static uint32_t type_version;
+static _PyUOpExecutorObject *current_executor;
 
 static PyObject *
 dummy_func(
@@ -70,28 +76,24 @@ dummy_func(
     _PyInterpreterFrame *frame,
     unsigned char opcode,
     unsigned int oparg,
-    _Py_atomic_int * const eval_breaker,
-    _PyCFrame cframe,
     _Py_CODEUNIT *next_instr,
     PyObject **stack_pointer,
-    PyObject *kwnames,
     int throwflag,
-    binaryfunc binary_ops[],
     PyObject *args[]
 )
 {
     // Dummy labels.
     pop_1_error:
     // Dummy locals.
-    PyObject *annotations;
+    PyObject *dummy;
+    _Py_CODEUNIT *this_instr;
+    PyObject *attr;
     PyObject *attrs;
     PyObject *bottom;
     PyObject *callable;
     PyObject *callargs;
-    PyObject *closure;
     PyObject *codeobj;
     PyObject *cond;
-    PyObject *defaults;
     PyObject *descr;
     _PyInterpreterFrame  entry_frame;
     PyObject *exc;
@@ -125,6 +127,7 @@ dummy_func(
     PyObject *subject;
     PyObject *top;
     PyObject *type;
+    PyObject *typevars;
     int values_or_none;
 
     switch (opcode) {
@@ -133,54 +136,71 @@ dummy_func(
         inst(NOP, (--)) {
         }
 
+        family(RESUME, 0) = {
+            RESUME_CHECK,
+        };
+
         inst(RESUME, (--)) {
-            assert(tstate->cframe == &cframe);
-            assert(frame == cframe.current_frame);
-            /* Possibly combine this with eval breaker */
-            if (frame->f_code->_co_instrumentation_version != tstate->interp->monitoring_version) {
-                int err = _Py_Instrument(frame->f_code, tstate->interp);
+            TIER_ONE_ONLY
+            assert(frame == tstate->current_frame);
+            uintptr_t global_version =
+                _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker) &
+                ~_PY_EVAL_EVENTS_MASK;
+            uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            assert((code_version & 255) == 0);
+            if (code_version != global_version) {
+                int err = _Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
                 ERROR_IF(err, error);
-                next_instr--;
+                next_instr = this_instr;
             }
-            else if (_Py_atomic_load_relaxed_int32(eval_breaker) && oparg < 2) {
-                goto handle_eval_breaker;
+            else {
+                if ((oparg & RESUME_OPARG_LOCATION_MASK) < RESUME_AFTER_YIELD_FROM) {
+                    CHECK_EVAL_BREAKER();
+                }
+                this_instr->op.code = RESUME_CHECK;
             }
         }
 
+        inst(RESUME_CHECK, (--)) {
+#if defined(__EMSCRIPTEN__)
+            DEOPT_IF(_Py_emscripten_signal_clock == 0);
+            _Py_emscripten_signal_clock -= Py_EMSCRIPTEN_SIGNAL_HANDLING;
+#endif
+            uintptr_t eval_breaker = _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker);
+            uintptr_t version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            assert((version & _PY_EVAL_EVENTS_MASK) == 0);
+            DEOPT_IF(eval_breaker != version);
+        }
+
         inst(INSTRUMENTED_RESUME, (--)) {
-            /* Possible performance enhancement:
-             *   We need to check the eval breaker anyway, can we
-             * combine the instrument verison check and the eval breaker test?
-             */
-            if (frame->f_code->_co_instrumentation_version != tstate->interp->monitoring_version) {
-                if (_Py_Instrument(frame->f_code, tstate->interp)) {
-                    goto error;
+            uintptr_t global_version = _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker) & ~_PY_EVAL_EVENTS_MASK;
+            uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            if (code_version != global_version) {
+                if (_Py_Instrument(_PyFrame_GetCode(frame), tstate->interp)) {
+                    GOTO_ERROR(error);
                 }
-                next_instr--;
+                next_instr = this_instr;
             }
             else {
+                if ((oparg & RESUME_OPARG_LOCATION_MASK) < RESUME_AFTER_YIELD_FROM) {
+                    CHECK_EVAL_BREAKER();
+                }
                 _PyFrame_SetStackPointer(frame, stack_pointer);
                 int err = _Py_call_instrumentation(
-                        tstate, oparg > 0, frame, next_instr-1);
+                        tstate, oparg > 0, frame, this_instr);
                 stack_pointer = _PyFrame_GetStackPointer(frame);
                 ERROR_IF(err, error);
-                if (frame->prev_instr != next_instr-1) {
+                if (frame->instr_ptr != this_instr) {
                     /* Instrumentation has jumped */
-                    next_instr = frame->prev_instr;
+                    next_instr = this_instr;
                     DISPATCH();
                 }
-                if (_Py_atomic_load_relaxed_int32(eval_breaker) && oparg < 2) {
-                    goto handle_eval_breaker;
-                }
             }
         }
 
-        inst(LOAD_CLOSURE, (-- value)) {
-            /* We keep LOAD_CLOSURE so that the bytecode stays more readable. */
-            value = GETLOCAL(oparg);
-            ERROR_IF(value == NULL, unbound_local_error);
-            Py_INCREF(value);
-        }
+        pseudo(LOAD_CLOSURE) = {
+            LOAD_FAST,
+        };
 
         inst(LOAD_FAST_CHECK, (-- value)) {
             value = GETLOCAL(oparg);
@@ -200,8 +220,17 @@ dummy_func(
             GETLOCAL(oparg) = NULL;
         }
 
+        inst(LOAD_FAST_LOAD_FAST, ( -- value1, value2)) {
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            value1 = GETLOCAL(oparg1);
+            value2 = GETLOCAL(oparg2);
+            Py_INCREF(value1);
+            Py_INCREF(value2);
+        }
+
         inst(LOAD_CONST, (-- value)) {
-            value = GETITEM(frame->f_code->co_consts, oparg);
+            value = GETITEM(FRAME_CO_CONSTS, oparg);
             Py_INCREF(value);
         }
 
@@ -209,11 +238,24 @@ dummy_func(
             SETLOCAL(oparg, value);
         }
 
-        super(LOAD_FAST__LOAD_FAST) = LOAD_FAST + LOAD_FAST;
-        super(LOAD_FAST__LOAD_CONST) = LOAD_FAST + LOAD_CONST;
-        super(STORE_FAST__LOAD_FAST)  = STORE_FAST + LOAD_FAST;
-        super(STORE_FAST__STORE_FAST) = STORE_FAST + STORE_FAST;
-        super(LOAD_CONST__LOAD_FAST) = LOAD_CONST + LOAD_FAST;
+        pseudo(STORE_FAST_MAYBE_NULL) = {
+            STORE_FAST,
+        };
+
+        inst(STORE_FAST_LOAD_FAST, (value1 -- value2)) {
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            SETLOCAL(oparg1, value1);
+            value2 = GETLOCAL(oparg2);
+            Py_INCREF(value2);
+        }
+
+        inst(STORE_FAST_STORE_FAST, (value2, value1 --)) {
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            SETLOCAL(oparg1, value1);
+            SETLOCAL(oparg2, value2);
+        }
 
         inst(POP_TOP, (value --)) {
             DECREF_INPUTS();
@@ -226,12 +268,13 @@ dummy_func(
         macro(END_FOR) = POP_TOP + POP_TOP;
 
         inst(INSTRUMENTED_END_FOR, (receiver, value --)) {
+            TIER_ONE_ONLY
             /* Need to create a fake StopIteration error here,
              * to conform to PEP 380 */
             if (PyGen_Check(receiver)) {
                 PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, next_instr-1)) {
-                    goto error;
+                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                    GOTO_ERROR(error);
                 }
                 PyErr_SetRaisedException(NULL);
             }
@@ -243,10 +286,11 @@ dummy_func(
         }
 
         inst(INSTRUMENTED_END_SEND, (receiver, value -- value)) {
+            TIER_ONE_ONLY
             if (PyGen_Check(receiver) || PyCoro_CheckExact(receiver)) {
                 PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, next_instr-1)) {
-                    goto error;
+                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                    GOTO_ERROR(error);
                 }
                 PyErr_SetRaisedException(NULL);
             }
@@ -260,16 +304,94 @@ dummy_func(
         }
 
         inst(UNARY_NOT, (value -- res)) {
+            assert(PyBool_Check(value));
+            res = Py_IsFalse(value) ? Py_True : Py_False;
+        }
+
+        family(TO_BOOL, INLINE_CACHE_ENTRIES_TO_BOOL) = {
+            TO_BOOL_ALWAYS_TRUE,
+            TO_BOOL_BOOL,
+            TO_BOOL_INT,
+            TO_BOOL_LIST,
+            TO_BOOL_NONE,
+            TO_BOOL_STR,
+        };
+
+        specializing op(_SPECIALIZE_TO_BOOL, (counter/1, value -- value)) {
+            TIER_ONE_ONLY
+            #if ENABLE_SPECIALIZATION
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
+                _Py_Specialize_ToBool(value, next_instr);
+                DISPATCH_SAME_OPARG();
+            }
+            STAT_INC(TO_BOOL, deferred);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+            #endif  /* ENABLE_SPECIALIZATION */
+        }
+
+        op(_TO_BOOL, (unused/2, value -- res)) {
             int err = PyObject_IsTrue(value);
             DECREF_INPUTS();
             ERROR_IF(err < 0, error);
-            if (err == 0) {
-                res = Py_True;
+            res = err ? Py_True : Py_False;
+        }
+
+        macro(TO_BOOL) = _SPECIALIZE_TO_BOOL + _TO_BOOL;
+
+        inst(TO_BOOL_BOOL, (unused/1, unused/2, value -- value)) {
+            DEOPT_IF(!PyBool_Check(value));
+            STAT_INC(TO_BOOL, hit);
+        }
+
+        inst(TO_BOOL_INT, (unused/1, unused/2, value -- res)) {
+            DEOPT_IF(!PyLong_CheckExact(value));
+            STAT_INC(TO_BOOL, hit);
+            if (_PyLong_IsZero((PyLongObject *)value)) {
+                assert(_Py_IsImmortal(value));
+                res = Py_False;
             }
             else {
+                DECREF_INPUTS();
+                res = Py_True;
+            }
+        }
+
+        inst(TO_BOOL_LIST, (unused/1, unused/2, value -- res)) {
+            DEOPT_IF(!PyList_CheckExact(value));
+            STAT_INC(TO_BOOL, hit);
+            res = Py_SIZE(value) ? Py_True : Py_False;
+            DECREF_INPUTS();
+        }
+
+        inst(TO_BOOL_NONE, (unused/1, unused/2, value -- res)) {
+            // This one is a bit weird, because we expect *some* failures:
+            DEOPT_IF(!Py_IsNone(value));
+            STAT_INC(TO_BOOL, hit);
+            res = Py_False;
+        }
+
+        inst(TO_BOOL_STR, (unused/1, unused/2, value -- res)) {
+            DEOPT_IF(!PyUnicode_CheckExact(value));
+            STAT_INC(TO_BOOL, hit);
+            if (value == &_Py_STR(empty)) {
+                assert(_Py_IsImmortal(value));
                 res = Py_False;
             }
-            Py_INCREF(res);
+            else {
+                assert(Py_SIZE(value));
+                DECREF_INPUTS();
+                res = Py_True;
+            }
+        }
+
+        inst(TO_BOOL_ALWAYS_TRUE, (unused/1, version/2, value -- res)) {
+            // This one is a bit weird, because we expect *some* failures:
+            assert(version);
+            DEOPT_IF(Py_TYPE(value)->tp_version_tag != version);
+            STAT_INC(TO_BOOL, hit);
+            DECREF_INPUTS();
+            res = Py_True;
         }
 
         inst(UNARY_INVERT, (value -- res)) {
@@ -278,59 +400,95 @@ dummy_func(
             ERROR_IF(res == NULL, error);
         }
 
-        family(binary_op, INLINE_CACHE_ENTRIES_BINARY_OP) = {
-            BINARY_OP,
-            BINARY_OP_ADD_FLOAT,
+        family(BINARY_OP, INLINE_CACHE_ENTRIES_BINARY_OP) = {
+            BINARY_OP_MULTIPLY_INT,
             BINARY_OP_ADD_INT,
-            BINARY_OP_ADD_UNICODE,
-            // BINARY_OP_INPLACE_ADD_UNICODE,  // This is an odd duck.
+            BINARY_OP_SUBTRACT_INT,
             BINARY_OP_MULTIPLY_FLOAT,
-            BINARY_OP_MULTIPLY_INT,
+            BINARY_OP_ADD_FLOAT,
             BINARY_OP_SUBTRACT_FLOAT,
-            BINARY_OP_SUBTRACT_INT,
+            BINARY_OP_ADD_UNICODE,
+            // BINARY_OP_INPLACE_ADD_UNICODE,  // See comments at that opcode.
         };
 
+        op(_GUARD_BOTH_INT, (left, right -- left, right)) {
+            DEOPT_IF(!PyLong_CheckExact(left));
+            DEOPT_IF(!PyLong_CheckExact(right));
+        }
 
-        inst(BINARY_OP_MULTIPLY_INT, (unused/1, left, right -- prod)) {
-            DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
+        op(_BINARY_OP_MULTIPLY_INT, (unused/1, left, right -- res)) {
             STAT_INC(BINARY_OP, hit);
-            prod = _PyLong_Multiply((PyLongObject *)left, (PyLongObject *)right);
+            res = _PyLong_Multiply((PyLongObject *)left, (PyLongObject *)right);
             _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
             _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            ERROR_IF(prod == NULL, error);
+            ERROR_IF(res == NULL, error);
         }
 
-        inst(BINARY_OP_MULTIPLY_FLOAT, (unused/1, left, right -- prod)) {
-            DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
+        op(_BINARY_OP_ADD_INT, (unused/1, left, right -- res)) {
             STAT_INC(BINARY_OP, hit);
-            double dprod = ((PyFloatObject *)left)->ob_fval *
-                ((PyFloatObject *)right)->ob_fval;
-            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dprod, prod);
+            res = _PyLong_Add((PyLongObject *)left, (PyLongObject *)right);
+            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+            ERROR_IF(res == NULL, error);
         }
 
-        inst(BINARY_OP_SUBTRACT_INT, (unused/1, left, right -- sub)) {
-            DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
+        op(_BINARY_OP_SUBTRACT_INT, (unused/1, left, right -- res)) {
             STAT_INC(BINARY_OP, hit);
-            sub = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
+            res = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
             _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
             _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            ERROR_IF(sub == NULL, error);
+            ERROR_IF(res == NULL, error);
         }
 
-        inst(BINARY_OP_SUBTRACT_FLOAT, (unused/1, left, right -- sub)) {
-            DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
+        macro(BINARY_OP_MULTIPLY_INT) =
+            _GUARD_BOTH_INT + _BINARY_OP_MULTIPLY_INT;
+        macro(BINARY_OP_ADD_INT) =
+            _GUARD_BOTH_INT + _BINARY_OP_ADD_INT;
+        macro(BINARY_OP_SUBTRACT_INT) =
+            _GUARD_BOTH_INT + _BINARY_OP_SUBTRACT_INT;
+
+        op(_GUARD_BOTH_FLOAT, (left, right -- left, right)) {
+            DEOPT_IF(!PyFloat_CheckExact(left));
+            DEOPT_IF(!PyFloat_CheckExact(right));
+        }
+
+        op(_BINARY_OP_MULTIPLY_FLOAT, (unused/1, left, right -- res)) {
+            STAT_INC(BINARY_OP, hit);
+            double dres =
+                ((PyFloatObject *)left)->ob_fval *
+                ((PyFloatObject *)right)->ob_fval;
+            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
+        }
+
+        op(_BINARY_OP_ADD_FLOAT, (unused/1, left, right -- res)) {
+            STAT_INC(BINARY_OP, hit);
+            double dres =
+                ((PyFloatObject *)left)->ob_fval +
+                ((PyFloatObject *)right)->ob_fval;
+            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
+        }
+
+        op(_BINARY_OP_SUBTRACT_FLOAT, (unused/1, left, right -- res)) {
             STAT_INC(BINARY_OP, hit);
-            double dsub = ((PyFloatObject *)left)->ob_fval - ((PyFloatObject *)right)->ob_fval;
-            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dsub, sub);
+            double dres =
+                ((PyFloatObject *)left)->ob_fval -
+                ((PyFloatObject *)right)->ob_fval;
+            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
         }
 
-        inst(BINARY_OP_ADD_UNICODE, (unused/1, left, right -- res)) {
-            DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
+        macro(BINARY_OP_MULTIPLY_FLOAT) =
+            _GUARD_BOTH_FLOAT + _BINARY_OP_MULTIPLY_FLOAT;
+        macro(BINARY_OP_ADD_FLOAT) =
+            _GUARD_BOTH_FLOAT + _BINARY_OP_ADD_FLOAT;
+        macro(BINARY_OP_SUBTRACT_FLOAT) =
+            _GUARD_BOTH_FLOAT + _BINARY_OP_SUBTRACT_FLOAT;
+
+        op(_GUARD_BOTH_UNICODE, (left, right -- left, right)) {
+            DEOPT_IF(!PyUnicode_CheckExact(left));
+            DEOPT_IF(!PyUnicode_CheckExact(right));
+        }
+
+        op(_BINARY_OP_ADD_UNICODE, (unused/1, left, right -- res)) {
             STAT_INC(BINARY_OP, hit);
             res = PyUnicode_Concat(left, right);
             _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
@@ -338,20 +496,19 @@ dummy_func(
             ERROR_IF(res == NULL, error);
         }
 
+        macro(BINARY_OP_ADD_UNICODE) =
+            _GUARD_BOTH_UNICODE + _BINARY_OP_ADD_UNICODE;
+
         // This is a subtle one. It's a super-instruction for
         // BINARY_OP_ADD_UNICODE followed by STORE_FAST
         // where the store goes into the left argument.
         // So the inputs are the same as for all BINARY_OP
         // specializations, but there is no output.
         // At the end we just skip over the STORE_FAST.
-        inst(BINARY_OP_INPLACE_ADD_UNICODE, (left, right --)) {
-            DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            _Py_CODEUNIT true_next = next_instr[INLINE_CACHE_ENTRIES_BINARY_OP];
-            assert(true_next.op.code == STORE_FAST ||
-                   true_next.op.code == STORE_FAST__LOAD_FAST);
-            PyObject **target_local = &GETLOCAL(true_next.op.arg);
-            DEOPT_IF(*target_local != left, BINARY_OP);
+        op(_BINARY_OP_INPLACE_ADD_UNICODE, (unused/1, left, right --)) {
+            assert(next_instr->op.code == STORE_FAST);
+            PyObject **target_local = &GETLOCAL(next_instr->op.arg);
+            DEOPT_IF(*target_local != left);
             STAT_INC(BINARY_OP, hit);
             /* Handle `left = left + right` or `left += right` for str.
              *
@@ -370,52 +527,42 @@ dummy_func(
             _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
             ERROR_IF(*target_local == NULL, error);
             // The STORE_FAST is already done.
-            JUMPBY(INLINE_CACHE_ENTRIES_BINARY_OP + 1);
+            assert(next_instr->op.code == STORE_FAST);
+            SKIP_OVER(1);
         }
 
-        inst(BINARY_OP_ADD_FLOAT, (unused/1, left, right -- sum)) {
-            DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            double dsum = ((PyFloatObject *)left)->ob_fval +
-                ((PyFloatObject *)right)->ob_fval;
-            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dsum, sum);
-        }
-
-        inst(BINARY_OP_ADD_INT, (unused/1, left, right -- sum)) {
-            DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            sum = _PyLong_Add((PyLongObject *)left, (PyLongObject *)right);
-            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
-            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            ERROR_IF(sum == NULL, error);
-        }
+        macro(BINARY_OP_INPLACE_ADD_UNICODE) =
+            _GUARD_BOTH_UNICODE + _BINARY_OP_INPLACE_ADD_UNICODE;
 
-        family(binary_subscr, INLINE_CACHE_ENTRIES_BINARY_SUBSCR) = {
-            BINARY_SUBSCR,
+        family(BINARY_SUBSCR, INLINE_CACHE_ENTRIES_BINARY_SUBSCR) = {
             BINARY_SUBSCR_DICT,
             BINARY_SUBSCR_GETITEM,
             BINARY_SUBSCR_LIST_INT,
+            BINARY_SUBSCR_STR_INT,
             BINARY_SUBSCR_TUPLE_INT,
         };
 
-        inst(BINARY_SUBSCR, (unused/1, container, sub -- res)) {
+        specializing op(_SPECIALIZE_BINARY_SUBSCR, (counter/1, container, sub -- container, sub)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyBinarySubscrCache *cache = (_PyBinarySubscrCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
                 _Py_Specialize_BinarySubscr(container, sub, next_instr);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(BINARY_SUBSCR, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
+        }
+
+        op(_BINARY_SUBSCR, (container, sub -- res)) {
             res = PyObject_GetItem(container, sub);
             DECREF_INPUTS();
             ERROR_IF(res == NULL, error);
         }
 
+        macro(BINARY_SUBSCR) = _SPECIALIZE_BINARY_SUBSCR + _BINARY_SUBSCR;
+
         inst(BINARY_SLICE, (container, start, stop -- res)) {
             PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
             // Can't use ERROR_IF() here, because we haven't
@@ -447,13 +594,13 @@ dummy_func(
         }
 
         inst(BINARY_SUBSCR_LIST_INT, (unused/1, list, sub -- res)) {
-            DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
-            DEOPT_IF(!PyList_CheckExact(list), BINARY_SUBSCR);
+            DEOPT_IF(!PyLong_CheckExact(sub));
+            DEOPT_IF(!PyList_CheckExact(list));
 
             // Deopt unless 0 <= sub < PyList_Size(list)
-            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub));
             Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
-            DEOPT_IF(index >= PyList_GET_SIZE(list), BINARY_SUBSCR);
+            DEOPT_IF(index >= PyList_GET_SIZE(list));
             STAT_INC(BINARY_SUBSCR, hit);
             res = PyList_GET_ITEM(list, index);
             assert(res != NULL);
@@ -462,14 +609,29 @@ dummy_func(
             Py_DECREF(list);
         }
 
+        inst(BINARY_SUBSCR_STR_INT, (unused/1, str, sub -- res)) {
+            DEOPT_IF(!PyLong_CheckExact(sub));
+            DEOPT_IF(!PyUnicode_CheckExact(str));
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub));
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            DEOPT_IF(PyUnicode_GET_LENGTH(str) <= index);
+            // Specialize for reading an ASCII character from any string:
+            Py_UCS4 c = PyUnicode_READ_CHAR(str, index);
+            DEOPT_IF(Py_ARRAY_LENGTH(_Py_SINGLETON(strings).ascii) <= c);
+            STAT_INC(BINARY_SUBSCR, hit);
+            res = (PyObject*)&_Py_SINGLETON(strings).ascii[c];
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(str);
+        }
+
         inst(BINARY_SUBSCR_TUPLE_INT, (unused/1, tuple, sub -- res)) {
-            DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
-            DEOPT_IF(!PyTuple_CheckExact(tuple), BINARY_SUBSCR);
+            DEOPT_IF(!PyLong_CheckExact(sub));
+            DEOPT_IF(!PyTuple_CheckExact(tuple));
 
             // Deopt unless 0 <= sub < PyTuple_Size(list)
-            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub));
             Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
-            DEOPT_IF(index >= PyTuple_GET_SIZE(tuple), BINARY_SUBSCR);
+            DEOPT_IF(index >= PyTuple_GET_SIZE(tuple));
             STAT_INC(BINARY_SUBSCR, hit);
             res = PyTuple_GET_ITEM(tuple, index);
             assert(res != NULL);
@@ -479,91 +641,86 @@ dummy_func(
         }
 
         inst(BINARY_SUBSCR_DICT, (unused/1, dict, sub -- res)) {
-            DEOPT_IF(!PyDict_CheckExact(dict), BINARY_SUBSCR);
+            DEOPT_IF(!PyDict_CheckExact(dict));
             STAT_INC(BINARY_SUBSCR, hit);
-            res = PyDict_GetItemWithError(dict, sub);
-            if (res == NULL) {
-                if (!_PyErr_Occurred(tstate)) {
-                    _PyErr_SetKeyError(sub);
-                }
-                DECREF_INPUTS();
-                ERROR_IF(true, error);
+            int rc = PyDict_GetItemRef(dict, sub, &res);
+            if (rc == 0) {
+                _PyErr_SetKeyError(sub);
             }
-            Py_INCREF(res);  // Do this before DECREF'ing dict, sub
             DECREF_INPUTS();
+            ERROR_IF(rc <= 0, error); // not found or error
         }
 
         inst(BINARY_SUBSCR_GETITEM, (unused/1, container, sub -- unused)) {
-            DEOPT_IF(tstate->interp->eval_frame, BINARY_SUBSCR);
+            DEOPT_IF(tstate->interp->eval_frame);
             PyTypeObject *tp = Py_TYPE(container);
-            DEOPT_IF(!PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE), BINARY_SUBSCR);
+            DEOPT_IF(!PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE));
             PyHeapTypeObject *ht = (PyHeapTypeObject *)tp;
             PyObject *cached = ht->_spec_cache.getitem;
-            DEOPT_IF(cached == NULL, BINARY_SUBSCR);
+            DEOPT_IF(cached == NULL);
             assert(PyFunction_Check(cached));
             PyFunctionObject *getitem = (PyFunctionObject *)cached;
             uint32_t cached_version = ht->_spec_cache.getitem_version;
-            DEOPT_IF(getitem->func_version != cached_version, BINARY_SUBSCR);
+            DEOPT_IF(getitem->func_version != cached_version);
             PyCodeObject *code = (PyCodeObject *)getitem->func_code;
             assert(code->co_argcount == 2);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), BINARY_SUBSCR);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
             STAT_INC(BINARY_SUBSCR, hit);
             Py_INCREF(getitem);
             _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, getitem, 2);
             STACK_SHRINK(2);
             new_frame->localsplus[0] = container;
             new_frame->localsplus[1] = sub;
-            JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
-            frame->return_offset = 0;
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
             DISPATCH_INLINED(new_frame);
         }
 
         inst(LIST_APPEND, (list, unused[oparg-1], v -- list, unused[oparg-1])) {
             ERROR_IF(_PyList_AppendTakeRef((PyListObject *)list, v) < 0, error);
-            PREDICT(JUMP_BACKWARD);
         }
 
         inst(SET_ADD, (set, unused[oparg-1], v -- set, unused[oparg-1])) {
             int err = PySet_Add(set, v);
             DECREF_INPUTS();
             ERROR_IF(err, error);
-            PREDICT(JUMP_BACKWARD);
         }
 
-        family(store_subscr, INLINE_CACHE_ENTRIES_STORE_SUBSCR) = {
-            STORE_SUBSCR,
+        family(STORE_SUBSCR, INLINE_CACHE_ENTRIES_STORE_SUBSCR) = {
             STORE_SUBSCR_DICT,
             STORE_SUBSCR_LIST_INT,
         };
 
-        inst(STORE_SUBSCR, (counter/1, v, container, sub -- )) {
+        specializing op(_SPECIALIZE_STORE_SUBSCR, (counter/1, container, sub -- container, sub)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
             if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
-                next_instr--;
+                next_instr = this_instr;
                 _Py_Specialize_StoreSubscr(container, sub, next_instr);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(STORE_SUBSCR, deferred);
-            _PyStoreSubscrCache *cache = (_PyStoreSubscrCache *)next_instr;
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #else
-            (void)counter;  // Unused.
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
+        }
+
+        op(_STORE_SUBSCR, (v, container, sub -- )) {
             /* container[sub] = v */
             int err = PyObject_SetItem(container, sub, v);
             DECREF_INPUTS();
             ERROR_IF(err, error);
         }
 
+        macro(STORE_SUBSCR) = _SPECIALIZE_STORE_SUBSCR + _STORE_SUBSCR;
+
         inst(STORE_SUBSCR_LIST_INT, (unused/1, value, list, sub -- )) {
-            DEOPT_IF(!PyLong_CheckExact(sub), STORE_SUBSCR);
-            DEOPT_IF(!PyList_CheckExact(list), STORE_SUBSCR);
+            DEOPT_IF(!PyLong_CheckExact(sub));
+            DEOPT_IF(!PyList_CheckExact(list));
 
             // Ensure nonnegative, zero-or-one-digit ints.
-            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), STORE_SUBSCR);
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub));
             Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
             // Ensure index < len(list)
-            DEOPT_IF(index >= PyList_GET_SIZE(list), STORE_SUBSCR);
+            DEOPT_IF(index >= PyList_GET_SIZE(list));
             STAT_INC(STORE_SUBSCR, hit);
 
             PyObject *old_value = PyList_GET_ITEM(list, index);
@@ -575,7 +732,7 @@ dummy_func(
         }
 
         inst(STORE_SUBSCR_DICT, (unused/1, value, dict, sub -- )) {
-            DEOPT_IF(!PyDict_CheckExact(dict), STORE_SUBSCR);
+            DEOPT_IF(!PyDict_CheckExact(dict));
             STAT_INC(STORE_SUBSCR, hit);
             int err = _PyDict_SetItem_Take2((PyDictObject *)dict, sub, value);
             Py_DECREF(dict);
@@ -591,19 +748,20 @@ dummy_func(
 
         inst(CALL_INTRINSIC_1, (value -- res)) {
             assert(oparg <= MAX_INTRINSIC_1);
-            res = _PyIntrinsics_UnaryFunctions[oparg](tstate, value);
+            res = _PyIntrinsics_UnaryFunctions[oparg].func(tstate, value);
             DECREF_INPUTS();
             ERROR_IF(res == NULL, error);
         }
 
         inst(CALL_INTRINSIC_2, (value2, value1 -- res)) {
             assert(oparg <= MAX_INTRINSIC_2);
-            res = _PyIntrinsics_BinaryFunctions[oparg](tstate, value2, value1);
+            res = _PyIntrinsics_BinaryFunctions[oparg].func(tstate, value2, value1);
             DECREF_INPUTS();
             ERROR_IF(res == NULL, error);
         }
 
         inst(RAISE_VARARGS, (args[oparg] -- )) {
+            TIER_ONE_ONLY
             PyObject *cause = NULL, *exc = NULL;
             switch (oparg) {
             case 2:
@@ -613,7 +771,11 @@ dummy_func(
                 exc = args[0];
                 /* fall through */
             case 0:
-                ERROR_IF(do_raise(tstate, exc, cause), exception_unwind);
+                if (do_raise(tstate, exc, cause)) {
+                    assert(oparg == 0);
+                    monitor_reraise(tstate, frame, this_instr);
+                    goto exception_unwind;
+                }
                 break;
             default:
                 _PyErr_SetString(tstate, PyExc_SystemError,
@@ -626,36 +788,47 @@ dummy_func(
         inst(INTERPRETER_EXIT, (retval --)) {
             assert(frame == &entry_frame);
             assert(_PyFrame_IsIncomplete(frame));
-            STACK_SHRINK(1);  // Since we're not going to DISPATCH()
-            assert(EMPTY());
-            /* Restore previous cframe and return. */
-            tstate->cframe = cframe.previous;
-            assert(tstate->cframe->current_frame == frame->previous);
+            /* Restore previous frame and return. */
+            tstate->current_frame = frame->previous;
             assert(!_PyErr_Occurred(tstate));
-            _Py_LeaveRecursiveCallTstate(tstate);
+            tstate->c_recursion_remaining += PY_EVAL_C_STACK_UNITS;
             return retval;
         }
 
-        inst(RETURN_VALUE, (retval --)) {
-            STACK_SHRINK(1);
+        // The stack effect here is ambiguous.
+        // We definitely pop the return value off the stack on entry.
+        // We also push it onto the stack on exit, but that's a
+        // different frame, and it's accounted for by _PUSH_FRAME.
+        op(_POP_FRAME, (retval --)) {
+            #if TIER_ONE
+            assert(frame != &entry_frame);
+            #endif
+            STORE_SP();
             assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
             _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
             // GH-99729: We need to unlink the frame *before* clearing it:
             _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
             _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
+            LOAD_SP();
+            LOAD_IP(frame->return_offset);
+#if LLTRACE && TIER_ONE
+            lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+            if (lltrace < 0) {
+                goto exit_unwind;
+            }
+#endif
         }
 
+        macro(RETURN_VALUE) =
+            _POP_FRAME;
+
         inst(INSTRUMENTED_RETURN_VALUE, (retval --)) {
             int err = _Py_call_instrumentation_arg(
                     tstate, PY_MONITORING_EVENT_PY_RETURN,
-                    frame, next_instr-1, retval);
-            if (err) goto error;
+                    frame, this_instr, retval);
+            if (err) GOTO_ERROR(error);
             STACK_SHRINK(1);
             assert(EMPTY());
             _PyFrame_SetStackPointer(frame, stack_pointer);
@@ -663,35 +836,23 @@ dummy_func(
             assert(frame != &entry_frame);
             // GH-99729: We need to unlink the frame *before* clearing it:
             _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
             _PyFrame_StackPush(frame, retval);
+            LOAD_IP(frame->return_offset);
             goto resume_frame;
         }
 
-        inst(RETURN_CONST, (--)) {
-            PyObject *retval = GETITEM(frame->f_code->co_consts, oparg);
-            Py_INCREF(retval);
-            assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
-            _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
-            // GH-99729: We need to unlink the frame *before* clearing it:
-            _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-        }
+        macro(RETURN_CONST) =
+            LOAD_CONST +
+            _POP_FRAME;
 
         inst(INSTRUMENTED_RETURN_CONST, (--)) {
-            PyObject *retval = GETITEM(frame->f_code->co_consts, oparg);
+            PyObject *retval = GETITEM(FRAME_CO_CONSTS, oparg);
             int err = _Py_call_instrumentation_arg(
                     tstate, PY_MONITORING_EVENT_PY_RETURN,
-                    frame, next_instr-1, retval);
-            if (err) goto error;
+                    frame, this_instr, retval);
+            if (err) GOTO_ERROR(error);
             Py_INCREF(retval);
             assert(EMPTY());
             _PyFrame_SetStackPointer(frame, stack_pointer);
@@ -699,10 +860,10 @@ dummy_func(
             assert(frame != &entry_frame);
             // GH-99729: We need to unlink the frame *before* clearing it:
             _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
             _PyFrame_StackPush(frame, retval);
+            LOAD_IP(frame->return_offset);
             goto resume_frame;
         }
 
@@ -747,7 +908,7 @@ dummy_func(
             if (PyAsyncGen_CheckExact(aiter)) {
                 awaitable = type->tp_as_async->am_anext(aiter);
                 if (awaitable == NULL) {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
             } else {
                 if (type->tp_as_async != NULL){
@@ -757,7 +918,7 @@ dummy_func(
                 if (getter != NULL) {
                     next_iter = (*getter)(aiter);
                     if (next_iter == NULL) {
-                        goto error;
+                        GOTO_ERROR(error);
                     }
                 }
                 else {
@@ -765,7 +926,7 @@ dummy_func(
                                   "'async for' requires an iterator with "
                                   "__anext__ method, got %.100s",
                                   type->tp_name);
-                    goto error;
+                    GOTO_ERROR(error);
                 }
 
                 awaitable = _PyCoro_GetAwaitableIter(next_iter);
@@ -777,20 +938,18 @@ dummy_func(
                         Py_TYPE(next_iter)->tp_name);
 
                     Py_DECREF(next_iter);
-                    goto error;
+                    GOTO_ERROR(error);
                 } else {
                     Py_DECREF(next_iter);
                 }
             }
-
-            PREDICT(LOAD_CONST);
         }
 
         inst(GET_AWAITABLE, (iterable -- iter)) {
             iter = _PyCoro_GetAwaitableIter(iterable);
 
             if (iter == NULL) {
-                format_awaitable_error(tstate, Py_TYPE(iterable), oparg);
+                _PyEval_FormatAwaitableError(tstate, Py_TYPE(iterable), oparg);
             }
 
             DECREF_INPUTS();
@@ -810,26 +969,26 @@ dummy_func(
             }
 
             ERROR_IF(iter == NULL, error);
-
-            PREDICT(LOAD_CONST);
         }
 
-        family(send, INLINE_CACHE_ENTRIES_SEND) = {
-            SEND,
+        family(SEND, INLINE_CACHE_ENTRIES_SEND) = {
             SEND_GEN,
         };
 
-        inst(SEND, (unused/1, receiver, v -- receiver, retval)) {
+        specializing op(_SPECIALIZE_SEND, (counter/1, receiver, unused -- receiver, unused)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PySendCache *cache = (_PySendCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
                 _Py_Specialize_Send(receiver, next_instr);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(SEND, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
+        }
+
+        op(_SEND, (receiver, v -- receiver, retval)) {
             assert(frame != &entry_frame);
             if ((tstate->interp->eval_frame == NULL) &&
                 (Py_TYPE(receiver) == &PyGen_Type || Py_TYPE(receiver) == &PyCoro_Type) &&
@@ -837,13 +996,13 @@ dummy_func(
             {
                 PyGenObject *gen = (PyGenObject *)receiver;
                 _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-                frame->return_offset = oparg;
                 STACK_SHRINK(1);
                 _PyFrame_StackPush(gen_frame, v);
                 gen->gi_frame_state = FRAME_EXECUTING;
                 gen->gi_exc_state.previous_item = tstate->exc_info;
                 tstate->exc_info = &gen->gi_exc_state;
-                JUMPBY(INLINE_CACHE_ENTRIES_SEND);
+                assert(next_instr - this_instr + oparg <= UINT16_MAX);
+                frame->return_offset = (uint16_t)(next_instr - this_instr + oparg);
                 DISPATCH_INLINED(gen_frame);
             }
             if (Py_IsNone(v) && PyIter_Check(receiver)) {
@@ -855,53 +1014,60 @@ dummy_func(
             if (retval == NULL) {
                 if (_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)
                 ) {
-                    monitor_raise(tstate, frame, next_instr-1);
+                    monitor_raise(tstate, frame, this_instr);
                 }
                 if (_PyGen_FetchStopIterationValue(&retval) == 0) {
                     assert(retval != NULL);
                     JUMPBY(oparg);
                 }
                 else {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
             }
             Py_DECREF(v);
         }
 
+        macro(SEND) = _SPECIALIZE_SEND + _SEND;
+
         inst(SEND_GEN, (unused/1, receiver, v -- receiver, unused)) {
-            DEOPT_IF(tstate->interp->eval_frame, SEND);
+            DEOPT_IF(tstate->interp->eval_frame);
             PyGenObject *gen = (PyGenObject *)receiver;
-            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type &&
-                     Py_TYPE(gen) != &PyCoro_Type, SEND);
-            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING, SEND);
+            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type && Py_TYPE(gen) != &PyCoro_Type);
+            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING);
             STAT_INC(SEND, hit);
             _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-            frame->return_offset = oparg;
             STACK_SHRINK(1);
             _PyFrame_StackPush(gen_frame, v);
             gen->gi_frame_state = FRAME_EXECUTING;
             gen->gi_exc_state.previous_item = tstate->exc_info;
             tstate->exc_info = &gen->gi_exc_state;
-            JUMPBY(INLINE_CACHE_ENTRIES_SEND);
+            assert(next_instr - this_instr + oparg <= UINT16_MAX);
+            frame->return_offset = (uint16_t)(next_instr - this_instr + oparg);
             DISPATCH_INLINED(gen_frame);
         }
 
         inst(INSTRUMENTED_YIELD_VALUE, (retval -- unused)) {
             assert(frame != &entry_frame);
+            frame->instr_ptr = next_instr;
             PyGenObject *gen = _PyFrame_GetGenerator(frame);
-            gen->gi_frame_state = FRAME_SUSPENDED;
+            assert(FRAME_SUSPENDED_YIELD_FROM == FRAME_SUSPENDED + 1);
+            assert(oparg == 0 || oparg == 1);
+            gen->gi_frame_state = FRAME_SUSPENDED + oparg;
             _PyFrame_SetStackPointer(frame, stack_pointer - 1);
             int err = _Py_call_instrumentation_arg(
                     tstate, PY_MONITORING_EVENT_PY_YIELD,
-                    frame, next_instr-1, retval);
-            if (err) goto error;
+                    frame, this_instr, retval);
+            if (err) GOTO_ERROR(error);
             tstate->exc_info = gen->gi_exc_state.previous_item;
             gen->gi_exc_state.previous_item = NULL;
             _Py_LeaveRecursiveCallPy(tstate);
             _PyInterpreterFrame *gen_frame = frame;
-            frame = cframe.current_frame = frame->previous;
+            frame = tstate->current_frame = frame->previous;
             gen_frame->previous = NULL;
             _PyFrame_StackPush(frame, retval);
+            /* We don't know which of these is relevant here, so keep them equal */
+            assert(INLINE_CACHE_ENTRIES_SEND == INLINE_CACHE_ENTRIES_FOR_ITER);
+            LOAD_IP(1 + INLINE_CACHE_ENTRIES_SEND);
             goto resume_frame;
         }
 
@@ -910,16 +1076,22 @@ dummy_func(
             // The compiler treats any exception raised here as a failed close()
             // or throw() call.
             assert(frame != &entry_frame);
+            frame->instr_ptr = next_instr;
             PyGenObject *gen = _PyFrame_GetGenerator(frame);
-            gen->gi_frame_state = FRAME_SUSPENDED;
+            assert(FRAME_SUSPENDED_YIELD_FROM == FRAME_SUSPENDED + 1);
+            assert(oparg == 0 || oparg == 1);
+            gen->gi_frame_state = FRAME_SUSPENDED + oparg;
             _PyFrame_SetStackPointer(frame, stack_pointer - 1);
             tstate->exc_info = gen->gi_exc_state.previous_item;
             gen->gi_exc_state.previous_item = NULL;
             _Py_LeaveRecursiveCallPy(tstate);
             _PyInterpreterFrame *gen_frame = frame;
-            frame = cframe.current_frame = frame->previous;
+            frame = tstate->current_frame = frame->previous;
             gen_frame->previous = NULL;
             _PyFrame_StackPush(frame, retval);
+            /* We don't know which of these is relevant here, so keep them equal */
+            assert(INLINE_CACHE_ENTRIES_SEND == INLINE_CACHE_ENTRIES_FOR_ITER);
+            LOAD_IP(1 + INLINE_CACHE_ENTRIES_SEND);
             goto resume_frame;
         }
 
@@ -929,26 +1101,29 @@ dummy_func(
         }
 
         inst(RERAISE, (values[oparg], exc -- values[oparg])) {
+            TIER_ONE_ONLY
             assert(oparg >= 0 && oparg <= 2);
             if (oparg) {
                 PyObject *lasti = values[0];
                 if (PyLong_Check(lasti)) {
-                    frame->prev_instr = _PyCode_CODE(frame->f_code) + PyLong_AsLong(lasti);
+                    frame->instr_ptr = _PyCode_CODE(_PyFrame_GetCode(frame)) + PyLong_AsLong(lasti);
                     assert(!_PyErr_Occurred(tstate));
                 }
                 else {
                     assert(PyLong_Check(lasti));
                     _PyErr_SetString(tstate, PyExc_SystemError, "lasti is not an int");
-                    goto error;
+                    GOTO_ERROR(error);
                 }
             }
             assert(exc && PyExceptionInstance_Check(exc));
             Py_INCREF(exc);
             _PyErr_SetRaisedException(tstate, exc);
+            monitor_reraise(tstate, frame, this_instr);
             goto exception_unwind;
         }
 
         inst(END_ASYNC_FOR, (awaitable, exc -- )) {
+            TIER_ONE_ONLY
             assert(exc && PyExceptionInstance_Check(exc));
             if (PyErr_GivenExceptionMatches(exc, PyExc_StopAsyncIteration)) {
                 DECREF_INPUTS();
@@ -956,20 +1131,23 @@ dummy_func(
             else {
                 Py_INCREF(exc);
                 _PyErr_SetRaisedException(tstate, exc);
+                monitor_reraise(tstate, frame, this_instr);
                 goto exception_unwind;
             }
         }
 
         inst(CLEANUP_THROW, (sub_iter, last_sent_val, exc_value -- none, value)) {
+            TIER_ONE_ONLY
             assert(throwflag);
             assert(exc_value && PyExceptionInstance_Check(exc_value));
             if (PyErr_GivenExceptionMatches(exc_value, PyExc_StopIteration)) {
                 value = Py_NewRef(((PyStopIterationObject *)exc_value)->value);
                 DECREF_INPUTS();
-                none = Py_NewRef(Py_None);
+                none = Py_None;
             }
             else {
                 _PyErr_SetRaisedException(tstate, Py_NewRef(exc_value));
+                monitor_reraise(tstate, frame, this_instr);
                 goto exception_unwind;
             }
         }
@@ -979,31 +1157,16 @@ dummy_func(
         }
 
         inst(LOAD_BUILD_CLASS, ( -- bc)) {
-            if (PyDict_CheckExact(BUILTINS())) {
-                bc = _PyDict_GetItemWithError(BUILTINS(),
-                                              &_Py_ID(__build_class__));
-                if (bc == NULL) {
-                    if (!_PyErr_Occurred(tstate)) {
-                        _PyErr_SetString(tstate, PyExc_NameError,
-                                         "__build_class__ not found");
-                    }
-                    ERROR_IF(true, error);
-                }
-                Py_INCREF(bc);
-            }
-            else {
-                bc = PyObject_GetItem(BUILTINS(), &_Py_ID(__build_class__));
-                if (bc == NULL) {
-                    if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError))
-                        _PyErr_SetString(tstate, PyExc_NameError,
-                                         "__build_class__ not found");
-                    ERROR_IF(true, error);
-                }
+            ERROR_IF(PyMapping_GetOptionalItem(BUILTINS(), &_Py_ID(__build_class__), &bc) < 0, error);
+            if (bc == NULL) {
+                _PyErr_SetString(tstate, PyExc_NameError,
+                                 "__build_class__ not found");
+                ERROR_IF(true, error);
             }
         }
 
         inst(STORE_NAME, (v -- )) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             PyObject *ns = LOCALS();
             int err;
             if (ns == NULL) {
@@ -1021,51 +1184,57 @@ dummy_func(
         }
 
         inst(DELETE_NAME, (--)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             PyObject *ns = LOCALS();
             int err;
             if (ns == NULL) {
                 _PyErr_Format(tstate, PyExc_SystemError,
                               "no locals when deleting %R", name);
-                goto error;
+                GOTO_ERROR(error);
             }
             err = PyObject_DelItem(ns, name);
             // Can't use ERROR_IF here.
             if (err != 0) {
-                format_exc_check_arg(tstate, PyExc_NameError,
-                                     NAME_ERROR_MSG,
-                                     name);
-                goto error;
+                _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                          NAME_ERROR_MSG,
+                                          name);
+                GOTO_ERROR(error);
             }
         }
 
-        family(unpack_sequence, INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE) = {
-            UNPACK_SEQUENCE,
+        family(UNPACK_SEQUENCE, INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE) = {
             UNPACK_SEQUENCE_TWO_TUPLE,
             UNPACK_SEQUENCE_TUPLE,
             UNPACK_SEQUENCE_LIST,
         };
 
-        inst(UNPACK_SEQUENCE, (unused/1, seq -- unused[oparg])) {
+        specializing op(_SPECIALIZE_UNPACK_SEQUENCE, (counter/1, seq -- seq)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyUnpackSequenceCache *cache = (_PyUnpackSequenceCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
                 _Py_Specialize_UnpackSequence(seq, next_instr, oparg);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(UNPACK_SEQUENCE, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
+            (void)seq;
+            (void)counter;
+        }
+
+        op(_UNPACK_SEQUENCE, (seq -- unused[oparg])) {
             PyObject **top = stack_pointer + oparg - 1;
-            int res = unpack_iterable(tstate, seq, oparg, -1, top);
+            int res = _PyEval_UnpackIterable(tstate, seq, oparg, -1, top);
             DECREF_INPUTS();
             ERROR_IF(res == 0, error);
         }
 
+        macro(UNPACK_SEQUENCE) = _SPECIALIZE_UNPACK_SEQUENCE + _UNPACK_SEQUENCE;
+
         inst(UNPACK_SEQUENCE_TWO_TUPLE, (unused/1, seq -- values[oparg])) {
-            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
-            DEOPT_IF(PyTuple_GET_SIZE(seq) != 2, UNPACK_SEQUENCE);
+            DEOPT_IF(!PyTuple_CheckExact(seq));
+            DEOPT_IF(PyTuple_GET_SIZE(seq) != 2);
             assert(oparg == 2);
             STAT_INC(UNPACK_SEQUENCE, hit);
             values[0] = Py_NewRef(PyTuple_GET_ITEM(seq, 1));
@@ -1074,8 +1243,8 @@ dummy_func(
         }
 
         inst(UNPACK_SEQUENCE_TUPLE, (unused/1, seq -- values[oparg])) {
-            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
-            DEOPT_IF(PyTuple_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
+            DEOPT_IF(!PyTuple_CheckExact(seq));
+            DEOPT_IF(PyTuple_GET_SIZE(seq) != oparg);
             STAT_INC(UNPACK_SEQUENCE, hit);
             PyObject **items = _PyTuple_ITEMS(seq);
             for (int i = oparg; --i >= 0; ) {
@@ -1085,8 +1254,8 @@ dummy_func(
         }
 
         inst(UNPACK_SEQUENCE_LIST, (unused/1, seq -- values[oparg])) {
-            DEOPT_IF(!PyList_CheckExact(seq), UNPACK_SEQUENCE);
-            DEOPT_IF(PyList_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
+            DEOPT_IF(!PyList_CheckExact(seq));
+            DEOPT_IF(PyList_GET_SIZE(seq) != oparg);
             STAT_INC(UNPACK_SEQUENCE, hit);
             PyObject **items = _PyList_ITEMS(seq);
             for (int i = oparg; --i >= 0; ) {
@@ -1098,180 +1267,180 @@ dummy_func(
         inst(UNPACK_EX, (seq -- unused[oparg & 0xFF], unused, unused[oparg >> 8])) {
             int totalargs = 1 + (oparg & 0xFF) + (oparg >> 8);
             PyObject **top = stack_pointer + totalargs - 1;
-            int res = unpack_iterable(tstate, seq, oparg & 0xFF, oparg >> 8, top);
+            int res = _PyEval_UnpackIterable(tstate, seq, oparg & 0xFF, oparg >> 8, top);
             DECREF_INPUTS();
             ERROR_IF(res == 0, error);
         }
 
-        family(store_attr, INLINE_CACHE_ENTRIES_STORE_ATTR) = {
-            STORE_ATTR,
+        family(STORE_ATTR, INLINE_CACHE_ENTRIES_STORE_ATTR) = {
             STORE_ATTR_INSTANCE_VALUE,
             STORE_ATTR_SLOT,
             STORE_ATTR_WITH_HINT,
         };
 
-        inst(STORE_ATTR, (counter/1, unused/3, v, owner --)) {
+        specializing op(_SPECIALIZE_STORE_ATTR, (counter/1, owner -- owner)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
             if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
-                PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-                next_instr--;
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+                next_instr = this_instr;
                 _Py_Specialize_StoreAttr(owner, next_instr, name);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(STORE_ATTR, deferred);
-            _PyAttrCache *cache = (_PyAttrCache *)next_instr;
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #else
-            (void)counter;  // Unused.
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+        }
+
+        op(_STORE_ATTR, (unused/3, v, owner --)) {
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             int err = PyObject_SetAttr(owner, name, v);
             DECREF_INPUTS();
             ERROR_IF(err, error);
         }
 
+        macro(STORE_ATTR) = _SPECIALIZE_STORE_ATTR + _STORE_ATTR;
+
         inst(DELETE_ATTR, (owner --)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            int err = PyObject_SetAttr(owner, name, (PyObject *)NULL);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err = PyObject_DelAttr(owner, name);
             DECREF_INPUTS();
             ERROR_IF(err, error);
         }
 
         inst(STORE_GLOBAL, (v --)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             int err = PyDict_SetItem(GLOBALS(), name, v);
             DECREF_INPUTS();
             ERROR_IF(err, error);
         }
 
         inst(DELETE_GLOBAL, (--)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             int err;
             err = PyDict_DelItem(GLOBALS(), name);
             // Can't use ERROR_IF here.
             if (err != 0) {
                 if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                    format_exc_check_arg(tstate, PyExc_NameError,
-                                         NAME_ERROR_MSG, name);
+                    _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                              NAME_ERROR_MSG, name);
                 }
-                goto error;
+                GOTO_ERROR(error);
             }
         }
 
-        inst(LOAD_NAME, ( -- v)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            PyObject *locals = LOCALS();
+        inst(LOAD_LOCALS, ( -- locals)) {
+            locals = LOCALS();
             if (locals == NULL) {
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "no locals when loading %R", name);
-                goto error;
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "no locals found");
+                ERROR_IF(true, error);
             }
-            if (PyDict_CheckExact(locals)) {
-                v = PyDict_GetItemWithError(locals, name);
-                if (v != NULL) {
-                    Py_INCREF(v);
-                }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto error;
-                }
+            Py_INCREF(locals);
+        }
+
+        inst(LOAD_FROM_DICT_OR_GLOBALS, (mod_or_class_dict -- v)) {
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
+                GOTO_ERROR(error);
             }
-            else {
-                v = PyObject_GetItem(locals, name);
+            if (v == NULL) {
+                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
+                    GOTO_ERROR(error);
+                }
                 if (v == NULL) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_KeyError))
-                        goto error;
-                    _PyErr_Clear(tstate);
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                        GOTO_ERROR(error);
+                    }
+                    if (v == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                                    tstate, PyExc_NameError,
+                                    NAME_ERROR_MSG, name);
+                        GOTO_ERROR(error);
+                    }
                 }
             }
+            DECREF_INPUTS();
+        }
+
+        inst(LOAD_NAME, (-- v)) {
+            PyObject *mod_or_class_dict = LOCALS();
+            if (mod_or_class_dict == NULL) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "no locals found");
+                ERROR_IF(true, error);
+            }
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
+                GOTO_ERROR(error);
+            }
             if (v == NULL) {
-                v = PyDict_GetItemWithError(GLOBALS(), name);
-                if (v != NULL) {
-                    Py_INCREF(v);
-                }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto error;
+                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
+                    GOTO_ERROR(error);
                 }
-                else {
-                    if (PyDict_CheckExact(BUILTINS())) {
-                        v = PyDict_GetItemWithError(BUILTINS(), name);
-                        if (v == NULL) {
-                            if (!_PyErr_Occurred(tstate)) {
-                                format_exc_check_arg(
-                                        tstate, PyExc_NameError,
-                                        NAME_ERROR_MSG, name);
-                            }
-                            goto error;
-                        }
-                        Py_INCREF(v);
+                if (v == NULL) {
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                        GOTO_ERROR(error);
                     }
-                    else {
-                        v = PyObject_GetItem(BUILTINS(), name);
-                        if (v == NULL) {
-                            if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                                format_exc_check_arg(
-                                            tstate, PyExc_NameError,
-                                            NAME_ERROR_MSG, name);
-                            }
-                            goto error;
-                        }
+                    if (v == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                                    tstate, PyExc_NameError,
+                                    NAME_ERROR_MSG, name);
+                        GOTO_ERROR(error);
                     }
                 }
             }
         }
 
-        family(load_global, INLINE_CACHE_ENTRIES_LOAD_GLOBAL) = {
-            LOAD_GLOBAL,
+        family(LOAD_GLOBAL, INLINE_CACHE_ENTRIES_LOAD_GLOBAL) = {
             LOAD_GLOBAL_MODULE,
             LOAD_GLOBAL_BUILTIN,
         };
 
-        inst(LOAD_GLOBAL, (unused/1, unused/1, unused/1, unused/1 -- null if (oparg & 1), v)) {
+        specializing op(_SPECIALIZE_LOAD_GLOBAL, (counter/1 -- )) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyLoadGlobalCache *cache = (_PyLoadGlobalCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+                next_instr = this_instr;
                 _Py_Specialize_LoadGlobal(GLOBALS(), BUILTINS(), next_instr, name);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(LOAD_GLOBAL, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
+        }
+
+        op(_LOAD_GLOBAL, (unused/1, unused/1, unused/1 -- res, null if (oparg & 1))) {
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
             if (PyDict_CheckExact(GLOBALS())
                 && PyDict_CheckExact(BUILTINS()))
             {
-                v = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
-                                       (PyDictObject *)BUILTINS(),
-                                       name);
-                if (v == NULL) {
+                res = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
+                                         (PyDictObject *)BUILTINS(),
+                                         name);
+                if (res == NULL) {
                     if (!_PyErr_Occurred(tstate)) {
                         /* _PyDict_LoadGlobal() returns NULL without raising
                          * an exception if the key doesn't exist */
-                        format_exc_check_arg(tstate, PyExc_NameError,
-                                             NAME_ERROR_MSG, name);
+                        _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                                  NAME_ERROR_MSG, name);
                     }
                     ERROR_IF(true, error);
                 }
-                Py_INCREF(v);
+                Py_INCREF(res);
             }
             else {
                 /* Slow-path if globals or builtins is not a dict */
-
                 /* namespace 1: globals */
-                v = PyObject_GetItem(GLOBALS(), name);
-                if (v == NULL) {
-                    ERROR_IF(!_PyErr_ExceptionMatches(tstate, PyExc_KeyError), error);
-                    _PyErr_Clear(tstate);
-
+                ERROR_IF(PyMapping_GetOptionalItem(GLOBALS(), name, &res) < 0, error);
+                if (res == NULL) {
                     /* namespace 2: builtins */
-                    v = PyObject_GetItem(BUILTINS(), name);
-                    if (v == NULL) {
-                        if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                            format_exc_check_arg(
-                                        tstate, PyExc_NameError,
-                                        NAME_ERROR_MSG, name);
-                        }
+                    ERROR_IF(PyMapping_GetOptionalItem(BUILTINS(), name, &res) < 0, error);
+                    if (res == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                                    tstate, PyExc_NameError,
+                                    NAME_ERROR_MSG, name);
                         ERROR_IF(true, error);
                     }
                 }
@@ -1279,36 +1448,54 @@ dummy_func(
             null = NULL;
         }
 
-        inst(LOAD_GLOBAL_MODULE, (unused/1, index/1, version/1, unused/1 -- null if (oparg & 1), res)) {
-            DEOPT_IF(!PyDict_CheckExact(GLOBALS()), LOAD_GLOBAL);
+        macro(LOAD_GLOBAL) = _SPECIALIZE_LOAD_GLOBAL + _LOAD_GLOBAL;
+
+        op(_GUARD_GLOBALS_VERSION, (version/1 --)) {
             PyDictObject *dict = (PyDictObject *)GLOBALS();
-            DEOPT_IF(dict->ma_keys->dk_version != version, LOAD_GLOBAL);
+            DEOPT_IF(!PyDict_CheckExact(dict));
+            DEOPT_IF(dict->ma_keys->dk_version != version);
+            assert(DK_IS_UNICODE(dict->ma_keys));
+        }
+
+        op(_GUARD_BUILTINS_VERSION, (version/1 --)) {
+            PyDictObject *dict = (PyDictObject *)BUILTINS();
+            DEOPT_IF(!PyDict_CheckExact(dict));
+            DEOPT_IF(dict->ma_keys->dk_version != version);
             assert(DK_IS_UNICODE(dict->ma_keys));
+        }
+
+        op(_LOAD_GLOBAL_MODULE, (index/1 -- res, null if (oparg & 1))) {
+            PyDictObject *dict = (PyDictObject *)GLOBALS();
             PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(dict->ma_keys);
             res = entries[index].me_value;
-            DEOPT_IF(res == NULL, LOAD_GLOBAL);
+            DEOPT_IF(res == NULL);
             Py_INCREF(res);
             STAT_INC(LOAD_GLOBAL, hit);
             null = NULL;
         }
 
-        inst(LOAD_GLOBAL_BUILTIN, (unused/1, index/1, mod_version/1, bltn_version/1 -- null if (oparg & 1), res)) {
-            DEOPT_IF(!PyDict_CheckExact(GLOBALS()), LOAD_GLOBAL);
-            DEOPT_IF(!PyDict_CheckExact(BUILTINS()), LOAD_GLOBAL);
-            PyDictObject *mdict = (PyDictObject *)GLOBALS();
+        op(_LOAD_GLOBAL_BUILTINS, (index/1 -- res, null if (oparg & 1))) {
             PyDictObject *bdict = (PyDictObject *)BUILTINS();
-            assert(opcode == LOAD_GLOBAL_BUILTIN);
-            DEOPT_IF(mdict->ma_keys->dk_version != mod_version, LOAD_GLOBAL);
-            DEOPT_IF(bdict->ma_keys->dk_version != bltn_version, LOAD_GLOBAL);
-            assert(DK_IS_UNICODE(bdict->ma_keys));
             PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(bdict->ma_keys);
             res = entries[index].me_value;
-            DEOPT_IF(res == NULL, LOAD_GLOBAL);
+            DEOPT_IF(res == NULL);
             Py_INCREF(res);
             STAT_INC(LOAD_GLOBAL, hit);
             null = NULL;
         }
 
+        macro(LOAD_GLOBAL_MODULE) =
+            unused/1 + // Skip over the counter
+            _GUARD_GLOBALS_VERSION +
+            unused/1 + // Skip over the builtins version
+            _LOAD_GLOBAL_MODULE;
+
+        macro(LOAD_GLOBAL_BUILTIN) =
+            unused/1 + // Skip over the counter
+            _GUARD_GLOBALS_VERSION +
+            _GUARD_BUILTINS_VERSION +
+            _LOAD_GLOBAL_BUILTINS;
+
         inst(DELETE_FAST, (--)) {
             PyObject *v = GETLOCAL(oparg);
             ERROR_IF(v == NULL, unbound_local_error);
@@ -1321,7 +1508,7 @@ dummy_func(
             PyObject *initial = GETLOCAL(oparg);
             PyObject *cell = PyCell_New(initial);
             if (cell == NULL) {
-                goto resume_with_error;
+                GOTO_ERROR(error);
             }
             SETLOCAL(oparg, cell);
         }
@@ -1332,52 +1519,38 @@ dummy_func(
             // Can't use ERROR_IF here.
             // Fortunately we don't need its superpower.
             if (oldobj == NULL) {
-                format_exc_unbound(tstate, frame->f_code, oparg);
-                goto error;
+                _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                GOTO_ERROR(error);
             }
             PyCell_SET(cell, NULL);
             Py_DECREF(oldobj);
         }
 
-        inst(LOAD_CLASSDEREF, ( -- value)) {
-            PyObject *name, *locals = LOCALS();
-            assert(locals);
-            assert(oparg >= 0 && oparg < frame->f_code->co_nlocalsplus);
-            name = PyTuple_GET_ITEM(frame->f_code->co_localsplusnames, oparg);
-            if (PyDict_CheckExact(locals)) {
-                value = PyDict_GetItemWithError(locals, name);
-                if (value != NULL) {
-                    Py_INCREF(value);
-                }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto error;
-                }
-            }
-            else {
-                value = PyObject_GetItem(locals, name);
-                if (value == NULL) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                        goto error;
-                    }
-                    _PyErr_Clear(tstate);
-                }
+        inst(LOAD_FROM_DICT_OR_DEREF, (class_dict -- value)) {
+            PyObject *name;
+            assert(class_dict);
+            assert(oparg >= 0 && oparg < _PyFrame_GetCode(frame)->co_nlocalsplus);
+            name = PyTuple_GET_ITEM(_PyFrame_GetCode(frame)->co_localsplusnames, oparg);
+            if (PyMapping_GetOptionalItem(class_dict, name, &value) < 0) {
+                GOTO_ERROR(error);
             }
             if (!value) {
                 PyObject *cell = GETLOCAL(oparg);
                 value = PyCell_GET(cell);
                 if (value == NULL) {
-                    format_exc_unbound(tstate, frame->f_code, oparg);
-                    goto error;
+                    _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                    GOTO_ERROR(error);
                 }
                 Py_INCREF(value);
             }
+            Py_DECREF(class_dict);
         }
 
         inst(LOAD_DEREF, ( -- value)) {
             PyObject *cell = GETLOCAL(oparg);
             value = PyCell_GET(cell);
             if (value == NULL) {
-                format_exc_unbound(tstate, frame->f_code, oparg);
+                _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
                 ERROR_IF(true, error);
             }
             Py_INCREF(value);
@@ -1392,7 +1565,7 @@ dummy_func(
 
         inst(COPY_FREE_VARS, (--)) {
             /* Copy closure variables to free variables */
-            PyCodeObject *co = frame->f_code;
+            PyCodeObject *co = _PyFrame_GetCode(frame);
             assert(PyFunction_Check(frame->f_funcobj));
             PyObject *closure = ((PyFunctionObject *)frame->f_funcobj)->func_closure;
             assert(oparg == co->co_nfreevars);
@@ -1433,7 +1606,7 @@ dummy_func(
                 DECREF_INPUTS();
                 ERROR_IF(true, error);
             }
-            Py_DECREF(none_val);
+            assert(Py_IsNone(none_val));
             DECREF_INPUTS();
         }
 
@@ -1446,7 +1619,7 @@ dummy_func(
         inst(BUILD_SET, (values[oparg] -- set)) {
             set = PySet_New(NULL);
             if (set == NULL)
-                goto error;
+                GOTO_ERROR(error);
             int err = 0;
             for (int i = 0; i < oparg; i++) {
                 PyObject *item = values[i];
@@ -1465,9 +1638,6 @@ dummy_func(
                     values, 2,
                     values+1, 2,
                     oparg);
-            if (map == NULL)
-                goto error;
-
             DECREF_INPUTS();
             ERROR_IF(map == NULL, error);
         }
@@ -1481,36 +1651,17 @@ dummy_func(
                 ERROR_IF(true, error);
             }
             /* check if __annotations__ in locals()... */
-            if (PyDict_CheckExact(LOCALS())) {
-                ann_dict = _PyDict_GetItemWithError(LOCALS(),
-                                                    &_Py_ID(__annotations__));
-                if (ann_dict == NULL) {
-                    ERROR_IF(_PyErr_Occurred(tstate), error);
-                    /* ...if not, create a new one */
-                    ann_dict = PyDict_New();
-                    ERROR_IF(ann_dict == NULL, error);
-                    err = PyDict_SetItem(LOCALS(), &_Py_ID(__annotations__),
-                                         ann_dict);
-                    Py_DECREF(ann_dict);
-                    ERROR_IF(err, error);
-                }
+            ERROR_IF(PyMapping_GetOptionalItem(LOCALS(), &_Py_ID(__annotations__), &ann_dict) < 0, error);
+            if (ann_dict == NULL) {
+                ann_dict = PyDict_New();
+                ERROR_IF(ann_dict == NULL, error);
+                err = PyObject_SetItem(LOCALS(), &_Py_ID(__annotations__),
+                                       ann_dict);
+                Py_DECREF(ann_dict);
+                ERROR_IF(err, error);
             }
             else {
-                /* do the same if locals() is not a dict */
-                ann_dict = PyObject_GetItem(LOCALS(), &_Py_ID(__annotations__));
-                if (ann_dict == NULL) {
-                    ERROR_IF(!_PyErr_ExceptionMatches(tstate, PyExc_KeyError), error);
-                    _PyErr_Clear(tstate);
-                    ann_dict = PyDict_New();
-                    ERROR_IF(ann_dict == NULL, error);
-                    err = PyObject_SetItem(LOCALS(), &_Py_ID(__annotations__),
-                                           ann_dict);
-                    Py_DECREF(ann_dict);
-                    ERROR_IF(err, error);
-                }
-                else {
-                    Py_DECREF(ann_dict);
-                }
+                Py_DECREF(ann_dict);
             }
         }
 
@@ -1519,7 +1670,7 @@ dummy_func(
                 PyTuple_GET_SIZE(keys) != (Py_ssize_t)oparg) {
                 _PyErr_SetString(tstate, PyExc_SystemError,
                                  "bad BUILD_CONST_KEY_MAP keys argument");
-                goto error;  // Pop the keys and values.
+                GOTO_ERROR(error);  // Pop the keys and values.
             }
             map = _PyDict_FromItems(
                     &PyTuple_GET_ITEM(keys, 0), 1,
@@ -1528,8 +1679,7 @@ dummy_func(
             ERROR_IF(map == NULL, error);
         }
 
-        inst(DICT_UPDATE, (update --)) {
-            PyObject *dict = PEEK(oparg + 1);  // update is still on the stack
+        inst(DICT_UPDATE, (dict, unused[oparg - 1], update -- dict, unused[oparg - 1])) {
             if (PyDict_Update(dict, update) < 0) {
                 if (_PyErr_ExceptionMatches(tstate, PyExc_AttributeError)) {
                     _PyErr_Format(tstate, PyExc_TypeError,
@@ -1542,94 +1692,136 @@ dummy_func(
             DECREF_INPUTS();
         }
 
-        inst(DICT_MERGE, (update --)) {
-            PyObject *dict = PEEK(oparg + 1);  // update is still on the stack
-
+        inst(DICT_MERGE, (callable, unused, unused, dict, unused[oparg - 1], update -- callable, unused, unused, dict, unused[oparg - 1])) {
             if (_PyDict_MergeEx(dict, update, 2) < 0) {
-                format_kwargs_error(tstate, PEEK(3 + oparg), update);
+                _PyEval_FormatKwargsError(tstate, callable, update);
                 DECREF_INPUTS();
                 ERROR_IF(true, error);
             }
             DECREF_INPUTS();
-            PREDICT(CALL_FUNCTION_EX);
         }
 
-        inst(MAP_ADD, (key, value --)) {
-            PyObject *dict = PEEK(oparg + 2);  // key, value are still on the stack
+        inst(MAP_ADD, (dict, unused[oparg - 1], key, value -- dict, unused[oparg - 1])) {
             assert(PyDict_CheckExact(dict));
             /* dict[key] = value */
             // Do not DECREF INPUTS because the function steals the references
             ERROR_IF(_PyDict_SetItem_Take2((PyDictObject *)dict, key, value) != 0, error);
-            PREDICT(JUMP_BACKWARD);
         }
 
-        family(load_super_attr, INLINE_CACHE_ENTRIES_LOAD_SUPER_ATTR) = {
-            LOAD_SUPER_ATTR,
+        inst(INSTRUMENTED_LOAD_SUPER_ATTR, (unused/1, unused, unused, unused -- unused, unused if (oparg & 1))) {
+            // cancel out the decrement that will happen in LOAD_SUPER_ATTR; we
+            // don't want to specialize instrumented instructions
+            INCREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+            GO_TO_INSTRUCTION(LOAD_SUPER_ATTR);
+        }
+
+        family(LOAD_SUPER_ATTR, INLINE_CACHE_ENTRIES_LOAD_SUPER_ATTR) = {
             LOAD_SUPER_ATTR_ATTR,
             LOAD_SUPER_ATTR_METHOD,
         };
 
-        inst(LOAD_SUPER_ATTR, (unused/1, global_super, class, self -- res2 if (oparg & 1), res)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 2);
-            int load_method = oparg & 1;
+        specializing op(_SPECIALIZE_LOAD_SUPER_ATTR, (counter/1, global_super, class, unused -- global_super, class, unused)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PySuperAttrCache *cache = (_PySuperAttrCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
+            int load_method = oparg & 1;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
                 _Py_Specialize_LoadSuperAttr(global_super, class, next_instr, load_method);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(LOAD_SUPER_ATTR, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
+        }
 
+        op(_LOAD_SUPER_ATTR, (global_super, class, self -- attr, null if (oparg & 1))) {
+            TIER_ONE_ONLY
+            if (opcode == INSTRUMENTED_LOAD_SUPER_ATTR) {
+                PyObject *arg = oparg & 2 ? class : &_PyInstrumentation_MISSING;
+                int err = _Py_call_instrumentation_2args(
+                        tstate, PY_MONITORING_EVENT_CALL,
+                        frame, this_instr, global_super, arg);
+                ERROR_IF(err, error);
+            }
             // we make no attempt to optimize here; specializations should
             // handle any case whose performance we care about
             PyObject *stack[] = {class, self};
             PyObject *super = PyObject_Vectorcall(global_super, stack, oparg & 2, NULL);
+            if (opcode == INSTRUMENTED_LOAD_SUPER_ATTR) {
+                PyObject *arg = oparg & 2 ? class : &_PyInstrumentation_MISSING;
+                if (super == NULL) {
+                    _Py_call_instrumentation_exc2(
+                        tstate, PY_MONITORING_EVENT_C_RAISE,
+                        frame, this_instr, global_super, arg);
+                }
+                else {
+                    int err = _Py_call_instrumentation_2args(
+                        tstate, PY_MONITORING_EVENT_C_RETURN,
+                        frame, this_instr, global_super, arg);
+                    if (err < 0) {
+                        Py_CLEAR(super);
+                    }
+                }
+            }
             DECREF_INPUTS();
             ERROR_IF(super == NULL, error);
-            res = PyObject_GetAttr(super, name);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            attr = PyObject_GetAttr(super, name);
             Py_DECREF(super);
-            ERROR_IF(res == NULL, error);
+            ERROR_IF(attr == NULL, error);
+            null = NULL;
         }
 
-        inst(LOAD_SUPER_ATTR_ATTR, (unused/1, global_super, class, self -- res2 if (oparg & 1), res)) {
-            assert(!(oparg & 1));
-            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
-            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
-            STAT_INC(LOAD_SUPER_ATTR, hit);
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 2);
-            res = _PySuper_Lookup((PyTypeObject *)class, self, name, NULL);
-            DECREF_INPUTS();
-            ERROR_IF(res == NULL, error);
-        }
+        macro(LOAD_SUPER_ATTR) = _SPECIALIZE_LOAD_SUPER_ATTR + _LOAD_SUPER_ATTR;
 
-        inst(LOAD_SUPER_ATTR_METHOD, (unused/1, global_super, class, self -- res2, res)) {
-            assert(oparg & 1);
-            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
-            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
+        pseudo(LOAD_SUPER_METHOD) = {
+            LOAD_SUPER_ATTR,
+        };
+
+        pseudo(LOAD_ZERO_SUPER_METHOD) = {
+            LOAD_SUPER_ATTR,
+        };
+
+        pseudo(LOAD_ZERO_SUPER_ATTR) = {
+            LOAD_SUPER_ATTR,
+        };
+
+        inst(LOAD_SUPER_ATTR_ATTR, (unused/1, global_super, class, self -- attr, unused if (0))) {
+            assert(!(oparg & 1));
+            DEOPT_IF(global_super != (PyObject *)&PySuper_Type);
+            DEOPT_IF(!PyType_Check(class));
+            STAT_INC(LOAD_SUPER_ATTR, hit);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            attr = _PySuper_Lookup((PyTypeObject *)class, self, name, NULL);
+            DECREF_INPUTS();
+            ERROR_IF(attr == NULL, error);
+        }
+
+        inst(LOAD_SUPER_ATTR_METHOD, (unused/1, global_super, class, self -- attr, self_or_null)) {
+            assert(oparg & 1);
+            DEOPT_IF(global_super != (PyObject *)&PySuper_Type);
+            DEOPT_IF(!PyType_Check(class));
             STAT_INC(LOAD_SUPER_ATTR, hit);
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 2);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            PyTypeObject *cls = (PyTypeObject *)class;
             int method_found = 0;
-            res2 = _PySuper_Lookup((PyTypeObject *)class, self, name, &method_found);
+            attr = _PySuper_Lookup(cls, self, name,
+                                   Py_TYPE(self)->tp_getattro == PyObject_GenericGetAttr ? &method_found : NULL);
             Py_DECREF(global_super);
             Py_DECREF(class);
-            if (res2 == NULL) {
+            if (attr == NULL) {
                 Py_DECREF(self);
                 ERROR_IF(true, error);
             }
             if (method_found) {
-                res = self; // transfer ownership
+                self_or_null = self; // transfer ownership
             } else {
                 Py_DECREF(self);
-                res = res2;
-                res2 = NULL;
+                self_or_null = NULL;
             }
         }
 
-        family(load_attr, INLINE_CACHE_ENTRIES_LOAD_ATTR) = {
-            LOAD_ATTR,
+        family(LOAD_ATTR, INLINE_CACHE_ENTRIES_LOAD_ATTR) = {
             LOAD_ATTR_INSTANCE_VALUE,
             LOAD_ATTR_MODULE,
             LOAD_ATTR_WITH_HINT,
@@ -1640,207 +1832,252 @@ dummy_func(
             LOAD_ATTR_METHOD_WITH_VALUES,
             LOAD_ATTR_METHOD_NO_DICT,
             LOAD_ATTR_METHOD_LAZY_DICT,
+            LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES,
+            LOAD_ATTR_NONDESCRIPTOR_NO_DICT,
         };
 
-        inst(LOAD_ATTR, (unused/9, owner -- res2 if (oparg & 1), res)) {
+        specializing op(_SPECIALIZE_LOAD_ATTR, (counter/1, owner -- owner)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyAttrCache *cache = (_PyAttrCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+                next_instr = this_instr;
                 _Py_Specialize_LoadAttr(owner, next_instr, name);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(LOAD_ATTR, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 1);
+        }
+
+        op(_LOAD_ATTR, (unused/8, owner -- attr, self_or_null if (oparg & 1))) {
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 1);
             if (oparg & 1) {
                 /* Designed to work in tandem with CALL, pushes two values. */
-                PyObject* meth = NULL;
-                if (_PyObject_GetMethod(owner, name, &meth)) {
+                attr = NULL;
+                if (_PyObject_GetMethod(owner, name, &attr)) {
                     /* We can bypass temporary bound method object.
                        meth is unbound method and obj is self.
-
                        meth | self | arg1 | ... | argN
                      */
-                    assert(meth != NULL);  // No errors on this branch
-                    res2 = meth;
-                    res = owner;  // Transfer ownership
+                    assert(attr != NULL);  // No errors on this branch
+                    self_or_null = owner;  // Transfer ownership
                 }
                 else {
                     /* meth is not an unbound method (but a regular attr, or
                        something was returned by a descriptor protocol).  Set
                        the second element of the stack to NULL, to signal
                        CALL that it's not a method call.
-
                        NULL | meth | arg1 | ... | argN
                     */
                     DECREF_INPUTS();
-                    ERROR_IF(meth == NULL, error);
-                    res2 = NULL;
-                    res = meth;
+                    ERROR_IF(attr == NULL, error);
+                    self_or_null = NULL;
                 }
             }
             else {
                 /* Classic, pushes one value. */
-                res = PyObject_GetAttr(owner, name);
+                attr = PyObject_GetAttr(owner, name);
                 DECREF_INPUTS();
-                ERROR_IF(res == NULL, error);
+                ERROR_IF(attr == NULL, error);
             }
         }
 
-        inst(LOAD_ATTR_INSTANCE_VALUE, (unused/1, type_version/2, index/1, unused/5, owner -- res2 if (oparg & 1), res)) {
+        macro(LOAD_ATTR) = _SPECIALIZE_LOAD_ATTR + _LOAD_ATTR;
+
+        pseudo(LOAD_METHOD) = {
+            LOAD_ATTR,
+        };
+
+        op(_GUARD_TYPE_VERSION, (type_version/2, owner -- owner)) {
             PyTypeObject *tp = Py_TYPE(owner);
             assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
-            assert(tp->tp_dictoffset < 0);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            DEOPT_IF(tp->tp_version_tag != type_version);
+        }
+
+        op(_CHECK_MANAGED_OBJECT_HAS_VALUES, (owner -- owner)) {
+            assert(Py_TYPE(owner)->tp_dictoffset < 0);
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv));
+        }
+
+        op(_LOAD_ATTR_INSTANCE_VALUE, (index/1, owner -- attr, null if (oparg & 1))) {
             PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
-            res = _PyDictOrValues_GetValues(dorv)->values[index];
-            DEOPT_IF(res == NULL, LOAD_ATTR);
+            attr = _PyDictOrValues_GetValues(dorv)->values[index];
+            DEOPT_IF(attr == NULL);
             STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
+            Py_INCREF(attr);
+            null = NULL;
             DECREF_INPUTS();
         }
 
-        inst(LOAD_ATTR_MODULE, (unused/1, type_version/2, index/1, unused/5, owner -- res2 if (oparg & 1), res)) {
-            DEOPT_IF(!PyModule_CheckExact(owner), LOAD_ATTR);
+        macro(LOAD_ATTR_INSTANCE_VALUE) =
+            unused/1 + // Skip over the counter
+            _GUARD_TYPE_VERSION +
+            _CHECK_MANAGED_OBJECT_HAS_VALUES +
+            _LOAD_ATTR_INSTANCE_VALUE +
+            unused/5;  // Skip over rest of cache
+
+        op(_CHECK_ATTR_MODULE, (type_version/2, owner -- owner)) {
+            DEOPT_IF(!PyModule_CheckExact(owner));
             PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
             assert(dict != NULL);
-            DEOPT_IF(dict->ma_keys->dk_version != type_version, LOAD_ATTR);
+            DEOPT_IF(dict->ma_keys->dk_version != type_version);
+        }
+
+        op(_LOAD_ATTR_MODULE, (index/1, owner -- attr, null if (oparg & 1))) {
+            PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
             assert(dict->ma_keys->dk_kind == DICT_KEYS_UNICODE);
             assert(index < dict->ma_keys->dk_nentries);
             PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + index;
-            res = ep->me_value;
-            DEOPT_IF(res == NULL, LOAD_ATTR);
+            attr = ep->me_value;
+            DEOPT_IF(attr == NULL);
             STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
+            Py_INCREF(attr);
+            null = NULL;
             DECREF_INPUTS();
         }
 
-        inst(LOAD_ATTR_WITH_HINT, (unused/1, type_version/2, index/1, unused/5, owner -- res2 if (oparg & 1), res)) {
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+        macro(LOAD_ATTR_MODULE) =
+            unused/1 +
+            _CHECK_ATTR_MODULE +
+            _LOAD_ATTR_MODULE +
+            unused/5;
+
+        op(_CHECK_ATTR_WITH_HINT, (owner -- owner)) {
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
             PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
+            DEOPT_IF(_PyDictOrValues_IsValues(dorv));
             PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
-            DEOPT_IF(dict == NULL, LOAD_ATTR);
+            DEOPT_IF(dict == NULL);
             assert(PyDict_CheckExact((PyObject *)dict));
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-            uint16_t hint = index;
-            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, LOAD_ATTR);
+        }
+
+        op(_LOAD_ATTR_WITH_HINT, (hint/1, owner -- attr, null if (oparg & 1))) {
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
             if (DK_IS_UNICODE(dict->ma_keys)) {
                 PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, LOAD_ATTR);
-                res = ep->me_value;
+                DEOPT_IF(ep->me_key != name);
+                attr = ep->me_value;
             }
             else {
                 PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, LOAD_ATTR);
-                res = ep->me_value;
+                DEOPT_IF(ep->me_key != name);
+                attr = ep->me_value;
             }
-            DEOPT_IF(res == NULL, LOAD_ATTR);
+            DEOPT_IF(attr == NULL);
             STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
+            Py_INCREF(attr);
+            null = NULL;
             DECREF_INPUTS();
         }
 
-        inst(LOAD_ATTR_SLOT, (unused/1, type_version/2, index/1, unused/5, owner -- res2 if (oparg & 1), res)) {
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
+        macro(LOAD_ATTR_WITH_HINT) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _CHECK_ATTR_WITH_HINT +
+            _LOAD_ATTR_WITH_HINT +
+            unused/5;
+
+        op(_LOAD_ATTR_SLOT, (index/1, owner -- attr, null if (oparg & 1))) {
             char *addr = (char *)owner + index;
-            res = *(PyObject **)addr;
-            DEOPT_IF(res == NULL, LOAD_ATTR);
+            attr = *(PyObject **)addr;
+            DEOPT_IF(attr == NULL);
             STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
+            Py_INCREF(attr);
+            null = NULL;
             DECREF_INPUTS();
         }
 
-        inst(LOAD_ATTR_CLASS, (unused/1, type_version/2, unused/2, descr/4, cls -- res2 if (oparg & 1), res)) {
+        macro(LOAD_ATTR_SLOT) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _LOAD_ATTR_SLOT +  // NOTE: This action may also deopt
+            unused/5;
 
-            DEOPT_IF(!PyType_Check(cls), LOAD_ATTR);
-            DEOPT_IF(((PyTypeObject *)cls)->tp_version_tag != type_version,
-                LOAD_ATTR);
+        op(_CHECK_ATTR_CLASS, (type_version/2, owner -- owner)) {
+            DEOPT_IF(!PyType_Check(owner));
             assert(type_version != 0);
+            DEOPT_IF(((PyTypeObject *)owner)->tp_version_tag != type_version);
+
+        }
 
+        op(_LOAD_ATTR_CLASS, (descr/4, owner -- attr, null if (oparg & 1))) {
             STAT_INC(LOAD_ATTR, hit);
-            res2 = NULL;
-            res = descr;
-            assert(res != NULL);
-            Py_INCREF(res);
+            assert(descr != NULL);
+            attr = Py_NewRef(descr);
+            null = NULL;
             DECREF_INPUTS();
         }
 
-        inst(LOAD_ATTR_PROPERTY, (unused/1, type_version/2, func_version/2, fget/4, owner -- unused if (oparg & 1), unused)) {
-            DEOPT_IF(tstate->interp->eval_frame, LOAD_ATTR);
+        macro(LOAD_ATTR_CLASS) =
+            unused/1 +
+            _CHECK_ATTR_CLASS +
+            unused/2 +
+            _LOAD_ATTR_CLASS;
+
+        inst(LOAD_ATTR_PROPERTY, (unused/1, type_version/2, func_version/2, fget/4, owner -- unused, unused if (0))) {
+            assert((oparg & 1) == 0);
+            DEOPT_IF(tstate->interp->eval_frame);
 
             PyTypeObject *cls = Py_TYPE(owner);
-            DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
             assert(type_version != 0);
+            DEOPT_IF(cls->tp_version_tag != type_version);
             assert(Py_IS_TYPE(fget, &PyFunction_Type));
             PyFunctionObject *f = (PyFunctionObject *)fget;
             assert(func_version != 0);
-            DEOPT_IF(f->func_version != func_version, LOAD_ATTR);
+            DEOPT_IF(f->func_version != func_version);
             PyCodeObject *code = (PyCodeObject *)f->func_code;
             assert(code->co_argcount == 1);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), LOAD_ATTR);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
             STAT_INC(LOAD_ATTR, hit);
             Py_INCREF(fget);
             _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, f, 1);
             // Manipulate stack directly because we exit with DISPATCH_INLINED().
-            SET_TOP(NULL);
-            int shrink_stack = !(oparg & 1);
-            STACK_SHRINK(shrink_stack);
+            STACK_SHRINK(1);
             new_frame->localsplus[0] = owner;
-            JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
-            frame->return_offset = 0;
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
             DISPATCH_INLINED(new_frame);
         }
 
-        inst(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN, (unused/1, type_version/2, func_version/2, getattribute/4, owner -- unused if (oparg & 1), unused)) {
-            DEOPT_IF(tstate->interp->eval_frame, LOAD_ATTR);
+        inst(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN, (unused/1, type_version/2, func_version/2, getattribute/4, owner -- unused, unused if (0))) {
+            assert((oparg & 1) == 0);
+            DEOPT_IF(tstate->interp->eval_frame);
             PyTypeObject *cls = Py_TYPE(owner);
-            DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
             assert(type_version != 0);
+            DEOPT_IF(cls->tp_version_tag != type_version);
             assert(Py_IS_TYPE(getattribute, &PyFunction_Type));
             PyFunctionObject *f = (PyFunctionObject *)getattribute;
             assert(func_version != 0);
-            DEOPT_IF(f->func_version != func_version, LOAD_ATTR);
+            DEOPT_IF(f->func_version != func_version);
             PyCodeObject *code = (PyCodeObject *)f->func_code;
             assert(code->co_argcount == 2);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), LOAD_ATTR);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
             STAT_INC(LOAD_ATTR, hit);
 
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 1);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 1);
             Py_INCREF(f);
             _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, f, 2);
             // Manipulate stack directly because we exit with DISPATCH_INLINED().
-            SET_TOP(NULL);
-            int shrink_stack = !(oparg & 1);
-            STACK_SHRINK(shrink_stack);
+            STACK_SHRINK(1);
             new_frame->localsplus[0] = owner;
             new_frame->localsplus[1] = Py_NewRef(name);
-            JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
-            frame->return_offset = 0;
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
             DISPATCH_INLINED(new_frame);
         }
 
-        inst(STORE_ATTR_INSTANCE_VALUE, (unused/1, type_version/2, index/1, value, owner --)) {
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+        op(_GUARD_DORV_VALUES, (owner -- owner)) {
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(!_PyDictOrValues_IsValues(dorv));
+        }
+
+        op(_STORE_ATTR_INSTANCE_VALUE, (index/1, value, owner --)) {
             PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), STORE_ATTR);
             STAT_INC(STORE_ATTR, hit);
             PyDictValues *values = _PyDictOrValues_GetValues(dorv);
             PyObject *old_value = values->values[index];
@@ -1854,33 +2091,39 @@ dummy_func(
             Py_DECREF(owner);
         }
 
+        macro(STORE_ATTR_INSTANCE_VALUE) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _GUARD_DORV_VALUES +
+            _STORE_ATTR_INSTANCE_VALUE;
+
         inst(STORE_ATTR_WITH_HINT, (unused/1, type_version/2, hint/1, value, owner --)) {
             PyTypeObject *tp = Py_TYPE(owner);
             assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
+            DEOPT_IF(tp->tp_version_tag != type_version);
             assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
             PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(_PyDictOrValues_IsValues(dorv), STORE_ATTR);
+            DEOPT_IF(_PyDictOrValues_IsValues(dorv));
             PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
-            DEOPT_IF(dict == NULL, STORE_ATTR);
+            DEOPT_IF(dict == NULL);
             assert(PyDict_CheckExact((PyObject *)dict));
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, STORE_ATTR);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries);
             PyObject *old_value;
             uint64_t new_version;
             if (DK_IS_UNICODE(dict->ma_keys)) {
                 PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, STORE_ATTR);
+                DEOPT_IF(ep->me_key != name);
                 old_value = ep->me_value;
-                DEOPT_IF(old_value == NULL, STORE_ATTR);
+                DEOPT_IF(old_value == NULL);
                 new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
                 ep->me_value = value;
             }
             else {
                 PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, STORE_ATTR);
+                DEOPT_IF(ep->me_key != name);
                 old_value = ep->me_value;
-                DEOPT_IF(old_value == NULL, STORE_ATTR);
+                DEOPT_IF(old_value == NULL);
                 new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
                 ep->me_value = value;
             }
@@ -1895,10 +2138,7 @@ dummy_func(
             Py_DECREF(owner);
         }
 
-        inst(STORE_ATTR_SLOT, (unused/1, type_version/2, index/1, value, owner --)) {
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
+        op(_STORE_ATTR_SLOT, (index/1, value, owner --)) {
             char *addr = (char *)owner + index;
             STAT_INC(STORE_ATTR, hit);
             PyObject *old_value = *(PyObject **)addr;
@@ -1907,33 +2147,48 @@ dummy_func(
             Py_DECREF(owner);
         }
 
-        family(compare_op, INLINE_CACHE_ENTRIES_COMPARE_OP) = {
-            COMPARE_OP,
+        macro(STORE_ATTR_SLOT) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _STORE_ATTR_SLOT;
+
+        family(COMPARE_OP, INLINE_CACHE_ENTRIES_COMPARE_OP) = {
             COMPARE_OP_FLOAT,
             COMPARE_OP_INT,
             COMPARE_OP_STR,
         };
 
-        inst(COMPARE_OP, (unused/1, left, right -- res)) {
+        specializing op(_SPECIALIZE_COMPARE_OP, (counter/1, left, right -- left, right)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyCompareOpCache *cache = (_PyCompareOpCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
                 _Py_Specialize_CompareOp(left, right, next_instr, oparg);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(COMPARE_OP, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
-            assert((oparg >> 4) <= Py_GE);
-            res = PyObject_RichCompare(left, right, oparg>>4);
+        }
+
+        op(_COMPARE_OP, (left, right -- res)) {
+            assert((oparg >> 5) <= Py_GE);
+            res = PyObject_RichCompare(left, right, oparg >> 5);
             DECREF_INPUTS();
             ERROR_IF(res == NULL, error);
+            if (oparg & 16) {
+                int res_bool = PyObject_IsTrue(res);
+                Py_DECREF(res);
+                ERROR_IF(res_bool < 0, error);
+                res = res_bool ? Py_True : Py_False;
+            }
         }
 
+        macro(COMPARE_OP) = _SPECIALIZE_COMPARE_OP + _COMPARE_OP;
+
         inst(COMPARE_OP_FLOAT, (unused/1, left, right -- res)) {
-            DEOPT_IF(!PyFloat_CheckExact(left), COMPARE_OP);
-            DEOPT_IF(!PyFloat_CheckExact(right), COMPARE_OP);
+            DEOPT_IF(!PyFloat_CheckExact(left));
+            DEOPT_IF(!PyFloat_CheckExact(right));
             STAT_INC(COMPARE_OP, hit);
             double dleft = PyFloat_AS_DOUBLE(left);
             double dright = PyFloat_AS_DOUBLE(right);
@@ -1942,15 +2197,15 @@ dummy_func(
             _Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
             _Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
             res = (sign_ish & oparg) ? Py_True : Py_False;
-            Py_INCREF(res);
+            // It's always a bool, so we don't care about oparg & 16.
         }
 
         // Similar to COMPARE_OP_FLOAT
         inst(COMPARE_OP_INT, (unused/1, left, right -- res)) {
-            DEOPT_IF(!PyLong_CheckExact(left), COMPARE_OP);
-            DEOPT_IF(!PyLong_CheckExact(right), COMPARE_OP);
-            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)left), COMPARE_OP);
-            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)right), COMPARE_OP);
+            DEOPT_IF(!PyLong_CheckExact(left));
+            DEOPT_IF(!PyLong_CheckExact(right));
+            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)left));
+            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)right));
             STAT_INC(COMPARE_OP, hit);
             assert(_PyLong_DigitCount((PyLongObject *)left) <= 1 &&
                    _PyLong_DigitCount((PyLongObject *)right) <= 1);
@@ -1961,48 +2216,48 @@ dummy_func(
             _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
             _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
             res = (sign_ish & oparg) ? Py_True : Py_False;
-            Py_INCREF(res);
+            // It's always a bool, so we don't care about oparg & 16.
         }
 
         // Similar to COMPARE_OP_FLOAT, but for ==, != only
         inst(COMPARE_OP_STR, (unused/1, left, right -- res)) {
-            DEOPT_IF(!PyUnicode_CheckExact(left), COMPARE_OP);
-            DEOPT_IF(!PyUnicode_CheckExact(right), COMPARE_OP);
+            DEOPT_IF(!PyUnicode_CheckExact(left));
+            DEOPT_IF(!PyUnicode_CheckExact(right));
             STAT_INC(COMPARE_OP, hit);
             int eq = _PyUnicode_Equal(left, right);
-            assert((oparg >>4) == Py_EQ || (oparg >>4) == Py_NE);
+            assert((oparg >> 5) == Py_EQ || (oparg >> 5) == Py_NE);
             _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
             _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
             assert(eq == 0 || eq == 1);
             assert((oparg & 0xf) == COMPARISON_NOT_EQUALS || (oparg & 0xf) == COMPARISON_EQUALS);
             assert(COMPARISON_NOT_EQUALS + 1 == COMPARISON_EQUALS);
             res = ((COMPARISON_NOT_EQUALS + eq) & oparg) ? Py_True : Py_False;
-            Py_INCREF(res);
+            // It's always a bool, so we don't care about oparg & 16.
         }
 
         inst(IS_OP, (left, right -- b)) {
             int res = Py_Is(left, right) ^ oparg;
             DECREF_INPUTS();
-            b = Py_NewRef(res ? Py_True : Py_False);
+            b = res ? Py_True : Py_False;
         }
 
         inst(CONTAINS_OP, (left, right -- b)) {
             int res = PySequence_Contains(right, left);
             DECREF_INPUTS();
             ERROR_IF(res < 0, error);
-            b = Py_NewRef((res^oparg) ? Py_True : Py_False);
+            b = (res ^ oparg) ? Py_True : Py_False;
         }
 
         inst(CHECK_EG_MATCH, (exc_value, match_type -- rest, match)) {
-            if (check_except_star_type_valid(tstate, match_type) < 0) {
+            if (_PyEval_CheckExceptStarTypeValid(tstate, match_type) < 0) {
                 DECREF_INPUTS();
                 ERROR_IF(true, error);
             }
 
             match = NULL;
             rest = NULL;
-            int res = exception_group_match(exc_value, match_type,
-                                            &match, &rest);
+            int res = _PyEval_ExceptionGroupMatch(exc_value, match_type,
+                                                  &match, &rest);
             DECREF_INPUTS();
             ERROR_IF(res < 0, error);
 
@@ -2016,25 +2271,27 @@ dummy_func(
 
         inst(CHECK_EXC_MATCH, (left, right -- left, b)) {
             assert(PyExceptionInstance_Check(left));
-            if (check_except_type_valid(tstate, right) < 0) {
+            if (_PyEval_CheckExceptTypeValid(tstate, right) < 0) {
                  DECREF_INPUTS();
                  ERROR_IF(true, error);
             }
 
             int res = PyErr_GivenExceptionMatches(left, right);
             DECREF_INPUTS();
-            b = Py_NewRef(res ? Py_True : Py_False);
+            b = res ? Py_True : Py_False;
         }
 
          inst(IMPORT_NAME, (level, fromlist -- res)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+            TIER_ONE_ONLY
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             res = import_name(tstate, frame, name, fromlist, level);
             DECREF_INPUTS();
             ERROR_IF(res == NULL, error);
         }
 
         inst(IMPORT_FROM, (from -- from, res)) {
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
+            TIER_ONE_ONLY
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             res = import_from(tstate, from, name);
             ERROR_IF(res == NULL, error);
         }
@@ -2043,72 +2300,110 @@ dummy_func(
             JUMPBY(oparg);
         }
 
-        inst(JUMP_BACKWARD, (--)) {
-            assert(oparg < INSTR_OFFSET());
-            JUMPBY(-oparg);
+        inst(JUMP_BACKWARD, (unused/1 --)) {
             CHECK_EVAL_BREAKER();
-        }
-
-        inst(POP_JUMP_IF_FALSE, (cond -- )) {
-            if (Py_IsTrue(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-            }
-            else if (Py_IsFalse(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-                JUMPBY(oparg);
-            }
-            else {
-                int err = PyObject_IsTrue(cond);
-                DECREF_INPUTS();
-                if (err == 0) {
-                    JUMPBY(oparg);
+            assert(oparg <= INSTR_OFFSET());
+            JUMPBY(-oparg);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache += (1 << OPTIMIZER_BITS_IN_COUNTER);
+            /* We are using unsigned values, but we really want signed values, so
+             * do the 2s complement comparison manually */
+            uint16_t ucounter = this_instr[1].cache + (1 << 15);
+            uint16_t threshold = tstate->interp->optimizer_backedge_threshold + (1 << 15);
+            // Double-check that the opcode isn't instrumented or something:
+            if (ucounter > threshold && this_instr->op.code == JUMP_BACKWARD) {
+                OPT_STAT_INC(attempts);
+                int optimized = _PyOptimizer_BackEdge(frame, this_instr, next_instr, stack_pointer);
+                ERROR_IF(optimized < 0, error);
+                if (optimized) {
+                    // Rewind and enter the executor:
+                    assert(this_instr->op.code == ENTER_EXECUTOR);
+                    next_instr = this_instr;
+                    this_instr[1].cache &= ((1 << OPTIMIZER_BITS_IN_COUNTER) - 1);
                 }
                 else {
-                    ERROR_IF(err < 0, error);
+                    int backoff = this_instr[1].cache & ((1 << OPTIMIZER_BITS_IN_COUNTER) - 1);
+                    if (backoff < MINIMUM_TIER2_BACKOFF) {
+                        backoff = MINIMUM_TIER2_BACKOFF;
+                    }
+                    else if (backoff < 15 - OPTIMIZER_BITS_IN_COUNTER) {
+                        backoff++;
+                    }
+                    assert(backoff <= 15 - OPTIMIZER_BITS_IN_COUNTER);
+                    this_instr[1].cache = ((1 << 16) - ((1 << OPTIMIZER_BITS_IN_COUNTER) << backoff)) | backoff;
                 }
             }
+            #endif  /* ENABLE_SPECIALIZATION */
         }
 
-        inst(POP_JUMP_IF_TRUE, (cond -- )) {
-            if (Py_IsFalse(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-            }
-            else if (Py_IsTrue(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-                JUMPBY(oparg);
-            }
-            else {
-                int err = PyObject_IsTrue(cond);
-                DECREF_INPUTS();
-                if (err > 0) {
-                    JUMPBY(oparg);
-                }
-                else {
-                    ERROR_IF(err < 0, error);
-                }
+        pseudo(JUMP) = {
+            JUMP_FORWARD,
+            JUMP_BACKWARD,
+        };
+
+        pseudo(JUMP_NO_INTERRUPT) = {
+            JUMP_FORWARD,
+            JUMP_BACKWARD_NO_INTERRUPT,
+        };
+
+        inst(ENTER_EXECUTOR, (--)) {
+            TIER_ONE_ONLY
+            CHECK_EVAL_BREAKER();
+
+            PyCodeObject *code = _PyFrame_GetCode(frame);
+            _PyExecutorObject *executor = (_PyExecutorObject *)code->co_executors->executors[oparg&255];
+            int original_oparg = executor->vm_data.oparg | (oparg & 0xfffff00);
+            JUMPBY(1-original_oparg);
+            frame->instr_ptr = next_instr;
+            Py_INCREF(executor);
+            if (executor->execute == _PyUOpExecute) {
+                current_executor = (_PyUOpExecutorObject *)executor;
+                GOTO_TIER_TWO();
+            }
+            frame = executor->execute(executor, frame, stack_pointer);
+            if (frame == NULL) {
+                frame = tstate->current_frame;
+                goto resume_with_error;
             }
+            goto enter_tier_one;
         }
 
-        inst(POP_JUMP_IF_NOT_NONE, (value -- )) {
-            if (!Py_IsNone(value)) {
-                DECREF_INPUTS();
-                JUMPBY(oparg);
-            }
-            else {
-                _Py_DECREF_NO_DEALLOC(value);
-            }
+        replaced op(_POP_JUMP_IF_FALSE, (unused/1, cond -- )) {
+            assert(PyBool_Check(cond));
+            int flag = Py_IsFalse(cond);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            JUMPBY(oparg * flag);
+        }
+
+        replaced op(_POP_JUMP_IF_TRUE, (unused/1, cond -- )) {
+            assert(PyBool_Check(cond));
+            int flag = Py_IsTrue(cond);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            JUMPBY(oparg * flag);
         }
 
-        inst(POP_JUMP_IF_NONE, (value -- )) {
+        op(_IS_NONE, (value -- b)) {
             if (Py_IsNone(value)) {
-                _Py_DECREF_NO_DEALLOC(value);
-                JUMPBY(oparg);
+                b = Py_True;
             }
             else {
+                b = Py_False;
                 DECREF_INPUTS();
             }
         }
 
+        macro(POP_JUMP_IF_TRUE) = _POP_JUMP_IF_TRUE;
+
+        macro(POP_JUMP_IF_FALSE) = _POP_JUMP_IF_FALSE;
+
+        macro(POP_JUMP_IF_NONE) = _IS_NONE + _POP_JUMP_IF_TRUE;
+
+        macro(POP_JUMP_IF_NOT_NONE) = _IS_NONE + _POP_JUMP_IF_FALSE;
+
         inst(JUMP_BACKWARD_NO_INTERRUPT, (--)) {
             /* This bytecode is used in the `yield from` or `await` loop.
              * If there is an interrupt, we want it handled in the innermost
@@ -2130,32 +2425,30 @@ dummy_func(
             // Pop TOS and TOS1. Set TOS to a tuple of attributes on success, or
             // None on failure.
             assert(PyTuple_CheckExact(names));
-            attrs = match_class(tstate, subject, type, oparg, names);
+            attrs = _PyEval_MatchClass(tstate, subject, type, oparg, names);
             DECREF_INPUTS();
             if (attrs) {
                 assert(PyTuple_CheckExact(attrs));  // Success!
             }
             else {
                 ERROR_IF(_PyErr_Occurred(tstate), error);  // Error!
-                attrs = Py_NewRef(Py_None);  // Failure!
+                attrs = Py_None;  // Failure!
             }
         }
 
         inst(MATCH_MAPPING, (subject -- subject, res)) {
             int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_MAPPING;
-            res = Py_NewRef(match ? Py_True : Py_False);
-            PREDICT(POP_JUMP_IF_FALSE);
+            res = match ? Py_True : Py_False;
         }
 
         inst(MATCH_SEQUENCE, (subject -- subject, res)) {
             int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_SEQUENCE;
-            res = Py_NewRef(match ? Py_True : Py_False);
-            PREDICT(POP_JUMP_IF_FALSE);
+            res = match ? Py_True : Py_False;
         }
 
         inst(MATCH_KEYS, (subject, keys -- subject, keys, values_or_none)) {
             // On successful match, PUSH(values). Otherwise, PUSH(None).
-            values_or_none = match_keys(tstate, subject, keys);
+            values_or_none = _PyEval_MatchKeys(tstate, subject, keys);
             ERROR_IF(values_or_none == NULL, error);
         }
 
@@ -2170,13 +2463,13 @@ dummy_func(
             /* before: [obj]; after [getiter(obj)] */
             if (PyCoro_CheckExact(iterable)) {
                 /* `iterable` is a coroutine */
-                if (!(frame->f_code->co_flags & (CO_COROUTINE | CO_ITERABLE_COROUTINE))) {
+                if (!(_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_ITERABLE_COROUTINE))) {
                     /* and it is used in a 'yield from' expression of a
                        regular generator. */
                     _PyErr_SetString(tstate, PyExc_TypeError,
                                      "cannot 'yield from' a coroutine object "
                                      "in a non-coroutine generator");
-                    goto error;
+                    GOTO_ERROR(error);
                 }
                 iter = iterable;
             }
@@ -2187,11 +2480,10 @@ dummy_func(
                 /* `iterable` is not a generator. */
                 iter = PyObject_GetIter(iterable);
                 if (iter == NULL) {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
                 DECREF_INPUTS();
             }
-            PREDICT(LOAD_CONST);
         }
 
         // Most members of this family are "secretly" super-instructions.
@@ -2200,154 +2492,246 @@ dummy_func(
         // This is optimized by skipping that instruction and combining
         // its effect (popping 'iter' instead of pushing 'next'.)
 
-        family(for_iter, INLINE_CACHE_ENTRIES_FOR_ITER) = {
-            FOR_ITER,
+        family(FOR_ITER, INLINE_CACHE_ENTRIES_FOR_ITER) = {
             FOR_ITER_LIST,
             FOR_ITER_TUPLE,
             FOR_ITER_RANGE,
             FOR_ITER_GEN,
         };
 
-        inst(FOR_ITER, (unused/1, iter -- iter, next)) {
+        specializing op(_SPECIALIZE_FOR_ITER, (counter/1, iter -- iter)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyForIterCache *cache = (_PyForIterCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
                 _Py_Specialize_ForIter(iter, next_instr, oparg);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(FOR_ITER, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
+        }
+
+        replaced op(_FOR_ITER, (iter -- iter, next)) {
             /* before: [iter]; after: [iter, iter()] *or* [] (and jump over END_FOR.) */
             next = (*Py_TYPE(iter)->tp_iternext)(iter);
             if (next == NULL) {
                 if (_PyErr_Occurred(tstate)) {
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
-                        goto error;
+                        GOTO_ERROR(error);
                     }
-                    monitor_raise(tstate, frame, next_instr-1);
+                    monitor_raise(tstate, frame, this_instr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
-                assert(next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == END_FOR ||
-                       next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == INSTRUMENTED_END_FOR);
+                assert(next_instr[oparg].op.code == END_FOR ||
+                       next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
                 Py_DECREF(iter);
                 STACK_SHRINK(1);
                 /* Jump forward oparg, then skip following END_FOR instruction */
-                JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
+                JUMPBY(oparg + 1);
                 DISPATCH();
             }
             // Common case: no jump, leave it to the code generator
         }
 
-        inst(INSTRUMENTED_FOR_ITER, ( -- )) {
-            _Py_CODEUNIT *here = next_instr-1;
+        op(_FOR_ITER_TIER_TWO, (iter -- iter, next)) {
+            /* before: [iter]; after: [iter, iter()] *or* [] (and jump over END_FOR.) */
+            next = (*Py_TYPE(iter)->tp_iternext)(iter);
+            if (next == NULL) {
+                if (_PyErr_Occurred(tstate)) {
+                    if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
+                        GOTO_ERROR(error);
+                    }
+                    _PyErr_Clear(tstate);
+                }
+                /* iterator ended normally */
+                Py_DECREF(iter);
+                STACK_SHRINK(1);
+                /* The translator sets the deopt target just past END_FOR */
+                DEOPT_IF(true);
+            }
+            // Common case: no jump, leave it to the code generator
+        }
+
+        macro(FOR_ITER) = _SPECIALIZE_FOR_ITER + _FOR_ITER;
+
+        inst(INSTRUMENTED_FOR_ITER, (unused/1 -- )) {
             _Py_CODEUNIT *target;
             PyObject *iter = TOP();
             PyObject *next = (*Py_TYPE(iter)->tp_iternext)(iter);
             if (next != NULL) {
                 PUSH(next);
-                target = next_instr + INLINE_CACHE_ENTRIES_FOR_ITER;
+                target = next_instr;
             }
             else {
                 if (_PyErr_Occurred(tstate)) {
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
-                        goto error;
+                        GOTO_ERROR(error);
                     }
-                    monitor_raise(tstate, frame, here);
+                    monitor_raise(tstate, frame, this_instr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
-                assert(next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == END_FOR ||
-                       next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == INSTRUMENTED_END_FOR);
+                assert(next_instr[oparg].op.code == END_FOR ||
+                       next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
                 STACK_SHRINK(1);
                 Py_DECREF(iter);
                 /* Skip END_FOR */
-                target = next_instr + INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1;
+                target = next_instr + oparg + 1;
             }
-            INSTRUMENTED_JUMP(here, target, PY_MONITORING_EVENT_BRANCH);
+            INSTRUMENTED_JUMP(this_instr, target, PY_MONITORING_EVENT_BRANCH);
+        }
+
+        op(_ITER_CHECK_LIST, (iter -- iter)) {
+            DEOPT_IF(Py_TYPE(iter) != &PyListIter_Type);
         }
 
-        inst(FOR_ITER_LIST, (unused/1, iter -- iter, next)) {
-            DEOPT_IF(Py_TYPE(iter) != &PyListIter_Type, FOR_ITER);
+        replaced op(_ITER_JUMP_LIST, (iter -- iter)) {
             _PyListIterObject *it = (_PyListIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyListIter_Type);
             STAT_INC(FOR_ITER, hit);
             PyListObject *seq = it->it_seq;
-            if (seq) {
-                if (it->it_index < PyList_GET_SIZE(seq)) {
-                    next = Py_NewRef(PyList_GET_ITEM(seq, it->it_index++));
-                    goto end_for_iter_list;  // End of this instruction
+            if (seq == NULL || it->it_index >= PyList_GET_SIZE(seq)) {
+                if (seq != NULL) {
+                    it->it_seq = NULL;
+                    Py_DECREF(seq);
                 }
-                it->it_seq = NULL;
-                Py_DECREF(seq);
+                Py_DECREF(iter);
+                STACK_SHRINK(1);
+                /* Jump forward oparg, then skip following END_FOR instruction */
+                JUMPBY(oparg + 1);
+                DISPATCH();
             }
-            Py_DECREF(iter);
-            STACK_SHRINK(1);
-            /* Jump forward oparg, then skip following END_FOR instruction */
-            JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
-            DISPATCH();
-        end_for_iter_list:
-            // Common case: no jump, leave it to the code generator
         }
 
-        inst(FOR_ITER_TUPLE, (unused/1, iter -- iter, next)) {
+        // Only used by Tier 2
+        op(_GUARD_NOT_EXHAUSTED_LIST, (iter -- iter)) {
+            _PyListIterObject *it = (_PyListIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyListIter_Type);
+            PyListObject *seq = it->it_seq;
+            DEOPT_IF(seq == NULL);
+            DEOPT_IF(it->it_index >= PyList_GET_SIZE(seq));
+        }
+
+        op(_ITER_NEXT_LIST, (iter -- iter, next)) {
+            _PyListIterObject *it = (_PyListIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyListIter_Type);
+            PyListObject *seq = it->it_seq;
+            assert(seq);
+            assert(it->it_index < PyList_GET_SIZE(seq));
+            next = Py_NewRef(PyList_GET_ITEM(seq, it->it_index++));
+        }
+
+        macro(FOR_ITER_LIST) =
+            unused/1 +  // Skip over the counter
+            _ITER_CHECK_LIST +
+            _ITER_JUMP_LIST +
+            _ITER_NEXT_LIST;
+
+        op(_ITER_CHECK_TUPLE, (iter -- iter)) {
+            DEOPT_IF(Py_TYPE(iter) != &PyTupleIter_Type);
+        }
+
+        replaced op(_ITER_JUMP_TUPLE, (iter -- iter)) {
             _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
-            DEOPT_IF(Py_TYPE(it) != &PyTupleIter_Type, FOR_ITER);
+            assert(Py_TYPE(iter) == &PyTupleIter_Type);
             STAT_INC(FOR_ITER, hit);
             PyTupleObject *seq = it->it_seq;
-            if (seq) {
-                if (it->it_index < PyTuple_GET_SIZE(seq)) {
-                    next = Py_NewRef(PyTuple_GET_ITEM(seq, it->it_index++));
-                    goto end_for_iter_tuple;  // End of this instruction
+            if (seq == NULL || it->it_index >= PyTuple_GET_SIZE(seq)) {
+                if (seq != NULL) {
+                    it->it_seq = NULL;
+                    Py_DECREF(seq);
                 }
-                it->it_seq = NULL;
-                Py_DECREF(seq);
+                Py_DECREF(iter);
+                STACK_SHRINK(1);
+                /* Jump forward oparg, then skip following END_FOR instruction */
+                JUMPBY(oparg + 1);
+                DISPATCH();
             }
-            Py_DECREF(iter);
-            STACK_SHRINK(1);
-            /* Jump forward oparg, then skip following END_FOR instruction */
-            JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
-            DISPATCH();
-        end_for_iter_tuple:
-            // Common case: no jump, leave it to the code generator
         }
 
-        inst(FOR_ITER_RANGE, (unused/1, iter -- iter, next)) {
+        // Only used by Tier 2
+        op(_GUARD_NOT_EXHAUSTED_TUPLE, (iter -- iter)) {
+            _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyTupleIter_Type);
+            PyTupleObject *seq = it->it_seq;
+            DEOPT_IF(seq == NULL);
+            DEOPT_IF(it->it_index >= PyTuple_GET_SIZE(seq));
+        }
+
+        op(_ITER_NEXT_TUPLE, (iter -- iter, next)) {
+            _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyTupleIter_Type);
+            PyTupleObject *seq = it->it_seq;
+            assert(seq);
+            assert(it->it_index < PyTuple_GET_SIZE(seq));
+            next = Py_NewRef(PyTuple_GET_ITEM(seq, it->it_index++));
+        }
+
+        macro(FOR_ITER_TUPLE) =
+            unused/1 +  // Skip over the counter
+            _ITER_CHECK_TUPLE +
+            _ITER_JUMP_TUPLE +
+            _ITER_NEXT_TUPLE;
+
+        op(_ITER_CHECK_RANGE, (iter -- iter)) {
+            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+            DEOPT_IF(Py_TYPE(r) != &PyRangeIter_Type);
+        }
+
+        replaced op(_ITER_JUMP_RANGE, (iter -- iter)) {
             _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
-            DEOPT_IF(Py_TYPE(r) != &PyRangeIter_Type, FOR_ITER);
+            assert(Py_TYPE(r) == &PyRangeIter_Type);
             STAT_INC(FOR_ITER, hit);
             if (r->len <= 0) {
                 STACK_SHRINK(1);
                 Py_DECREF(r);
                 // Jump over END_FOR instruction.
-                JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
+                JUMPBY(oparg + 1);
                 DISPATCH();
             }
+        }
+
+        // Only used by Tier 2
+        op(_GUARD_NOT_EXHAUSTED_RANGE, (iter -- iter)) {
+            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+            assert(Py_TYPE(r) == &PyRangeIter_Type);
+            DEOPT_IF(r->len <= 0);
+        }
+
+        op(_ITER_NEXT_RANGE, (iter -- iter, next)) {
+            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+            assert(Py_TYPE(r) == &PyRangeIter_Type);
+            assert(r->len > 0);
             long value = r->start;
             r->start = value + r->step;
             r->len--;
             next = PyLong_FromLong(value);
-            if (next == NULL) {
-                goto error;
-            }
+            ERROR_IF(next == NULL, error);
         }
 
+        macro(FOR_ITER_RANGE) =
+            unused/1 +  // Skip over the counter
+            _ITER_CHECK_RANGE +
+            _ITER_JUMP_RANGE +
+            _ITER_NEXT_RANGE;
+
         inst(FOR_ITER_GEN, (unused/1, iter -- iter, unused)) {
-            DEOPT_IF(tstate->interp->eval_frame, FOR_ITER);
+            DEOPT_IF(tstate->interp->eval_frame);
             PyGenObject *gen = (PyGenObject *)iter;
-            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type, FOR_ITER);
-            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING, FOR_ITER);
+            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type);
+            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING);
             STAT_INC(FOR_ITER, hit);
             _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-            frame->return_offset = oparg;
-            _PyFrame_StackPush(gen_frame, Py_NewRef(Py_None));
+            _PyFrame_StackPush(gen_frame, Py_None);
             gen->gi_frame_state = FRAME_EXECUTING;
             gen->gi_exc_state.previous_item = tstate->exc_info;
             tstate->exc_info = &gen->gi_exc_state;
-            JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER);
             assert(next_instr[oparg].op.code == END_FOR ||
                    next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
+            assert(next_instr - this_instr + oparg <= UINT16_MAX);
+            frame->return_offset = (uint16_t)(next_instr - this_instr + oparg);
             DISPATCH_INLINED(gen_frame);
         }
 
@@ -2360,7 +2744,7 @@ dummy_func(
                                   "asynchronous context manager protocol",
                                   Py_TYPE(mgr)->tp_name);
                 }
-                goto error;
+                GOTO_ERROR(error);
             }
             exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__aexit__));
             if (exit == NULL) {
@@ -2372,16 +2756,15 @@ dummy_func(
                                   Py_TYPE(mgr)->tp_name);
                 }
                 Py_DECREF(enter);
-                goto error;
+                GOTO_ERROR(error);
             }
             DECREF_INPUTS();
-            res = _PyObject_CallNoArgs(enter);
+            res = _PyObject_CallNoArgsTstate(tstate, enter);
             Py_DECREF(enter);
             if (res == NULL) {
                 Py_DECREF(exit);
                 ERROR_IF(true, error);
             }
-            PREDICT(GET_AWAITABLE);
         }
 
         inst(BEFORE_WITH, (mgr -- exit, res)) {
@@ -2396,7 +2779,7 @@ dummy_func(
                                   "context manager protocol",
                                   Py_TYPE(mgr)->tp_name);
                 }
-                goto error;
+                GOTO_ERROR(error);
             }
             exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__exit__));
             if (exit == NULL) {
@@ -2408,10 +2791,10 @@ dummy_func(
                                   Py_TYPE(mgr)->tp_name);
                 }
                 Py_DECREF(enter);
-                goto error;
+                GOTO_ERROR(error);
             }
             DECREF_INPUTS();
-            res = _PyObject_CallNoArgs(enter);
+            res = _PyObject_CallNoArgsTstate(tstate, enter);
             Py_DECREF(enter);
             if (res == NULL) {
                 Py_DECREF(exit);
@@ -2433,7 +2816,12 @@ dummy_func(
             assert(val && PyExceptionInstance_Check(val));
             exc = PyExceptionInstance_Class(val);
             tb = PyException_GetTraceback(val);
-            Py_XDECREF(tb);
+            if (tb == NULL) {
+                tb = Py_None;
+            }
+            else {
+                Py_DECREF(tb);
+            }
             assert(PyLong_Check(lasti));
             (void)lasti; // Shut up compiler warning if asserts are off
             PyObject *stack[4] = {NULL, exc, val, tb};
@@ -2442,146 +2830,201 @@ dummy_func(
             ERROR_IF(res == NULL, error);
         }
 
+        pseudo(SETUP_FINALLY, (HAS_ARG)) = {
+            NOP,
+        };
+
+        pseudo(SETUP_CLEANUP, (HAS_ARG)) = {
+            NOP,
+        };
+
+        pseudo(SETUP_WITH, (HAS_ARG)) = {
+            NOP,
+        };
+
+        pseudo(POP_BLOCK) = {
+            NOP,
+        };
+
         inst(PUSH_EXC_INFO, (new_exc -- prev_exc, new_exc)) {
             _PyErr_StackItem *exc_info = tstate->exc_info;
             if (exc_info->exc_value != NULL) {
                 prev_exc = exc_info->exc_value;
             }
             else {
-                prev_exc = Py_NewRef(Py_None);
+                prev_exc = Py_None;
             }
             assert(PyExceptionInstance_Check(new_exc));
             exc_info->exc_value = Py_NewRef(new_exc);
         }
 
-        inst(LOAD_ATTR_METHOD_WITH_VALUES, (unused/1, type_version/2, keys_version/2, descr/4, self -- res2 if (oparg & 1), res)) {
+        op(_GUARD_DORV_VALUES_INST_ATTR_FROM_DICT, (owner -- owner)) {
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv));
+        }
+
+        op(_GUARD_KEYS_VERSION, (keys_version/2, owner -- owner)) {
+            PyTypeObject *owner_cls = Py_TYPE(owner);
+            PyHeapTypeObject *owner_heap_type = (PyHeapTypeObject *)owner_cls;
+            DEOPT_IF(owner_heap_type->ht_cached_keys->dk_version != keys_version);
+        }
+
+        op(_LOAD_ATTR_METHOD_WITH_VALUES, (descr/4, owner -- attr, self if (1))) {
+            assert(oparg & 1);
             /* Cached method object */
-            PyTypeObject *self_cls = Py_TYPE(self);
-            assert(type_version != 0);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR);
-            assert(self_cls->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(self);
-            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
-            PyHeapTypeObject *self_heap_type = (PyHeapTypeObject *)self_cls;
-            DEOPT_IF(self_heap_type->ht_cached_keys->dk_version !=
-                     keys_version, LOAD_ATTR);
             STAT_INC(LOAD_ATTR, hit);
             assert(descr != NULL);
-            res2 = Py_NewRef(descr);
-            assert(_PyType_HasFeature(Py_TYPE(res2), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            res = self;
-            assert(oparg & 1);
+            attr = Py_NewRef(descr);
+            assert(_PyType_HasFeature(Py_TYPE(attr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+            self = owner;
         }
 
-        inst(LOAD_ATTR_METHOD_NO_DICT, (unused/1, type_version/2, unused/2, descr/4, self -- res2 if (oparg & 1), res)) {
-            PyTypeObject *self_cls = Py_TYPE(self);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR);
-            assert(self_cls->tp_dictoffset == 0);
+        macro(LOAD_ATTR_METHOD_WITH_VALUES) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT +
+            _GUARD_KEYS_VERSION +
+            _LOAD_ATTR_METHOD_WITH_VALUES;
+
+        op(_LOAD_ATTR_METHOD_NO_DICT, (descr/4, owner -- attr, self if (1))) {
+            assert(oparg & 1);
+            assert(Py_TYPE(owner)->tp_dictoffset == 0);
             STAT_INC(LOAD_ATTR, hit);
             assert(descr != NULL);
             assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            res2 = Py_NewRef(descr);
-            res = self;
-            assert(oparg & 1);
+            attr = Py_NewRef(descr);
+            self = owner;
+        }
+
+        macro(LOAD_ATTR_METHOD_NO_DICT) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            unused/2 +
+            _LOAD_ATTR_METHOD_NO_DICT;
+
+        op(_LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES, (descr/4, owner -- attr, unused if (0))) {
+            assert((oparg & 1) == 0);
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            DECREF_INPUTS();
+            attr = Py_NewRef(descr);
+        }
+
+        macro(LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT +
+            _GUARD_KEYS_VERSION +
+            _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES;
+
+        op(_LOAD_ATTR_NONDESCRIPTOR_NO_DICT, (descr/4, owner -- attr, unused if (0))) {
+            assert((oparg & 1) == 0);
+            assert(Py_TYPE(owner)->tp_dictoffset == 0);
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            DECREF_INPUTS();
+            attr = Py_NewRef(descr);
         }
 
-        inst(LOAD_ATTR_METHOD_LAZY_DICT, (unused/1, type_version/2, unused/2, descr/4, self -- res2 if (oparg & 1), res)) {
-            PyTypeObject *self_cls = Py_TYPE(self);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR);
-            Py_ssize_t dictoffset = self_cls->tp_dictoffset;
+        macro(LOAD_ATTR_NONDESCRIPTOR_NO_DICT) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            unused/2 +
+            _LOAD_ATTR_NONDESCRIPTOR_NO_DICT;
+
+        op(_CHECK_ATTR_METHOD_LAZY_DICT, (owner -- owner)) {
+            Py_ssize_t dictoffset = Py_TYPE(owner)->tp_dictoffset;
             assert(dictoffset > 0);
-            PyObject *dict = *(PyObject **)((char *)self + dictoffset);
+            PyObject *dict = *(PyObject **)((char *)owner + dictoffset);
             /* This object has a __dict__, just not yet created */
-            DEOPT_IF(dict != NULL, LOAD_ATTR);
+            DEOPT_IF(dict != NULL);
+        }
+
+        op(_LOAD_ATTR_METHOD_LAZY_DICT, (descr/4, owner -- attr, self if (1))) {
+            assert(oparg & 1);
             STAT_INC(LOAD_ATTR, hit);
             assert(descr != NULL);
             assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            res2 = Py_NewRef(descr);
-            res = self;
-            assert(oparg & 1);
+            attr = Py_NewRef(descr);
+            self = owner;
         }
 
-        inst(KW_NAMES, (--)) {
-            assert(kwnames == NULL);
-            assert(oparg < PyTuple_GET_SIZE(frame->f_code->co_consts));
-            kwnames = GETITEM(frame->f_code->co_consts, oparg);
-        }
+        macro(LOAD_ATTR_METHOD_LAZY_DICT) =
+            unused/1 +
+            _GUARD_TYPE_VERSION +
+            _CHECK_ATTR_METHOD_LAZY_DICT +
+            unused/2 +
+            _LOAD_ATTR_METHOD_LAZY_DICT;
 
-        inst(INSTRUMENTED_CALL, ( -- )) {
-            int is_meth = PEEK(oparg+2) != NULL;
+        inst(INSTRUMENTED_CALL, (unused/3 -- )) {
+            int is_meth = PEEK(oparg + 1) != NULL;
             int total_args = oparg + is_meth;
-            PyObject *function = PEEK(total_args + 1);
+            PyObject *function = PEEK(oparg + 2);
             PyObject *arg = total_args == 0 ?
                 &_PyInstrumentation_MISSING : PEEK(total_args);
             int err = _Py_call_instrumentation_2args(
                     tstate, PY_MONITORING_EVENT_CALL,
-                    frame, next_instr-1, function, arg);
+                    frame, this_instr, function, arg);
             ERROR_IF(err, error);
-            _PyCallCache *cache = (_PyCallCache *)next_instr;
-            INCREMENT_ADAPTIVE_COUNTER(cache->counter);
+            INCREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             GO_TO_INSTRUCTION(CALL);
         }
 
         // Cache layout: counter/1, func_version/2
-        // Neither CALL_INTRINSIC_1/2 nor CALL_FUNCTION_EX are members!
-        family(call, INLINE_CACHE_ENTRIES_CALL) = {
-            CALL,
+        // CALL_INTRINSIC_1/2, CALL_KW, and CALL_FUNCTION_EX aren't members!
+        family(CALL, INLINE_CACHE_ENTRIES_CALL) = {
             CALL_BOUND_METHOD_EXACT_ARGS,
             CALL_PY_EXACT_ARGS,
             CALL_PY_WITH_DEFAULTS,
-            CALL_NO_KW_TYPE_1,
-            CALL_NO_KW_STR_1,
-            CALL_NO_KW_TUPLE_1,
+            CALL_TYPE_1,
+            CALL_STR_1,
+            CALL_TUPLE_1,
             CALL_BUILTIN_CLASS,
-            CALL_NO_KW_BUILTIN_O,
-            CALL_NO_KW_BUILTIN_FAST,
+            CALL_BUILTIN_O,
+            CALL_BUILTIN_FAST,
             CALL_BUILTIN_FAST_WITH_KEYWORDS,
-            CALL_NO_KW_LEN,
-            CALL_NO_KW_ISINSTANCE,
-            CALL_NO_KW_LIST_APPEND,
-            CALL_NO_KW_METHOD_DESCRIPTOR_O,
+            CALL_LEN,
+            CALL_ISINSTANCE,
+            CALL_LIST_APPEND,
+            CALL_METHOD_DESCRIPTOR_O,
             CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS,
-            CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS,
-            CALL_NO_KW_METHOD_DESCRIPTOR_FAST,
+            CALL_METHOD_DESCRIPTOR_NOARGS,
+            CALL_METHOD_DESCRIPTOR_FAST,
+            CALL_ALLOC_AND_ENTER_INIT,
         };
 
-        // On entry, the stack is either
-        //   [NULL, callable, arg1, arg2, ...]
-        // or
-        //   [method, self, arg1, arg2, ...]
-        // (Some args may be keywords, see KW_NAMES, which sets 'kwnames'.)
-        // On exit, the stack is [result].
-        // When calling Python, inline the call using DISPATCH_INLINED().
-        inst(CALL, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
-            }
+        specializing op(_SPECIALIZE_CALL, (counter/1, callable, self_or_null, args[oparg] -- callable, self_or_null, args[oparg])) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyCallCache *cache = (_PyCallCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_Call(callable, next_instr, total_args, kwnames);
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
+                _Py_Specialize_Call(callable, next_instr, oparg + (self_or_null != NULL));
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(CALL, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
-            if (!is_meth && Py_TYPE(callable) == &PyMethod_Type) {
-                is_meth = 1;  // For consistenct; it's dead, though
+        }
+
+        // When calling Python, inline the call using DISPATCH_INLINED().
+        op(_CALL, (unused/2, callable, self_or_null, args[oparg] -- res)) {
+            // oparg counts all of the args, but *not* self:
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            else if (Py_TYPE(callable) == &PyMethod_Type) {
                 args--;
                 total_args++;
                 PyObject *self = ((PyMethodObject *)callable)->im_self;
                 args[0] = Py_NewRef(self);
-                method = ((PyMethodObject *)callable)->im_func;
+                PyObject *method = ((PyMethodObject *)callable)->im_func;
                 args[-1] = Py_NewRef(method);
                 Py_DECREF(callable);
                 callable = method;
             }
-            int positional_args = total_args - KWNAMES_LEN();
             // Check if the call can be inlined or not
             if (Py_TYPE(callable) == &PyFunction_Type &&
                 tstate->interp->eval_frame == NULL &&
@@ -2591,43 +3034,40 @@ dummy_func(
                 PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(callable));
                 _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit(
                     tstate, (PyFunctionObject *)callable, locals,
-                    args, positional_args, kwnames
+                    args, total_args, NULL
                 );
-                kwnames = NULL;
                 // Manipulate stack directly since we leave using DISPATCH_INLINED().
                 STACK_SHRINK(oparg + 2);
                 // The frame has stolen all the arguments from the stack,
                 // so there is no need to clean them up.
                 if (new_frame == NULL) {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
-                JUMPBY(INLINE_CACHE_ENTRIES_CALL);
-                frame->return_offset = 0;
+                frame->return_offset = (uint16_t)(next_instr - this_instr);
                 DISPATCH_INLINED(new_frame);
             }
             /* Callable is not a normal Python function */
             res = PyObject_Vectorcall(
                 callable, args,
-                positional_args | PY_VECTORCALL_ARGUMENTS_OFFSET,
-                kwnames);
+                total_args | PY_VECTORCALL_ARGUMENTS_OFFSET,
+                NULL);
             if (opcode == INSTRUMENTED_CALL) {
                 PyObject *arg = total_args == 0 ?
-                    &_PyInstrumentation_MISSING : PEEK(total_args);
+                    &_PyInstrumentation_MISSING : args[0];
                 if (res == NULL) {
                     _Py_call_instrumentation_exc2(
                         tstate, PY_MONITORING_EVENT_C_RAISE,
-                        frame, next_instr-1, callable, arg);
+                        frame, this_instr, callable, arg);
                 }
                 else {
                     int err = _Py_call_instrumentation_2args(
                         tstate, PY_MONITORING_EVENT_C_RETURN,
-                        frame, next_instr-1, callable, arg);
+                        frame, this_instr, callable, arg);
                     if (err < 0) {
                         Py_CLEAR(res);
                     }
                 }
             }
-            kwnames = NULL;
             assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
             Py_DECREF(callable);
             for (int i = 0; i < total_args; i++) {
@@ -2637,71 +3077,116 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        // Start out with [NULL, bound_method, arg1, arg2, ...]
-        // Transform to [callable, self, arg1, arg2, ...]
-        // Then fall through to CALL_PY_EXACT_ARGS
-        inst(CALL_BOUND_METHOD_EXACT_ARGS, (unused/1, unused/2, method, callable, unused[oparg] -- unused)) {
-            DEOPT_IF(method != NULL, CALL);
-            DEOPT_IF(Py_TYPE(callable) != &PyMethod_Type, CALL);
+        macro(CALL) = _SPECIALIZE_CALL + _CALL;
+
+        op(_CHECK_CALL_BOUND_METHOD_EXACT_ARGS, (callable, null, unused[oparg] -- callable, null, unused[oparg])) {
+            DEOPT_IF(null != NULL);
+            DEOPT_IF(Py_TYPE(callable) != &PyMethod_Type);
+        }
+
+        op(_INIT_CALL_BOUND_METHOD_EXACT_ARGS, (callable, unused, unused[oparg] -- func, self, unused[oparg])) {
             STAT_INC(CALL, hit);
-            PyObject *self = ((PyMethodObject *)callable)->im_self;
-            PEEK(oparg + 1) = Py_NewRef(self);  // callable
-            PyObject *meth = ((PyMethodObject *)callable)->im_func;
-            PEEK(oparg + 2) = Py_NewRef(meth);  // method
+            self = Py_NewRef(((PyMethodObject *)callable)->im_self);
+            stack_pointer[-1 - oparg] = self;  // Patch stack as it is used by _INIT_CALL_PY_EXACT_ARGS
+            func = Py_NewRef(((PyMethodObject *)callable)->im_func);
+            stack_pointer[-2 - oparg] = func;  // This is used by CALL, upon deoptimization
             Py_DECREF(callable);
-            GO_TO_INSTRUCTION(CALL_PY_EXACT_ARGS);
         }
 
-        inst(CALL_PY_EXACT_ARGS, (unused/1, func_version/2, method, callable, args[oparg] -- unused)) {
-            assert(kwnames == NULL);
-            DEOPT_IF(tstate->interp->eval_frame, CALL);
-            int is_meth = method != NULL;
+        op(_CHECK_PEP_523, (--)) {
+            DEOPT_IF(tstate->interp->eval_frame);
+        }
+
+        op(_CHECK_FUNCTION_EXACT_ARGS, (func_version/2, callable, self_or_null, unused[oparg] -- callable, self_or_null, unused[oparg])) {
+            DEOPT_IF(!PyFunction_Check(callable));
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            DEOPT_IF(func->func_version != func_version);
+            PyCodeObject *code = (PyCodeObject *)func->func_code;
+            DEOPT_IF(code->co_argcount != oparg + (self_or_null != NULL));
+        }
+
+        op(_CHECK_STACK_SPACE, (callable, unused, unused[oparg] -- callable, unused, unused[oparg])) {
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            PyCodeObject *code = (PyCodeObject *)func->func_code;
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
+            DEOPT_IF(tstate->py_recursion_remaining <= 1);
+        }
+
+        op(_INIT_CALL_PY_EXACT_ARGS, (callable, self_or_null, args[oparg] -- new_frame: _PyInterpreterFrame*)) {
             int argcount = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 argcount++;
             }
-            DEOPT_IF(!PyFunction_Check(callable), CALL);
-            PyFunctionObject *func = (PyFunctionObject *)callable;
-            DEOPT_IF(func->func_version != func_version, CALL);
-            PyCodeObject *code = (PyCodeObject *)func->func_code;
-            DEOPT_IF(code->co_argcount != argcount, CALL);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
             STAT_INC(CALL, hit);
-            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, func, argcount);
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            new_frame = _PyFrame_PushUnchecked(tstate, func, argcount);
             for (int i = 0; i < argcount; i++) {
                 new_frame->localsplus[i] = args[i];
             }
-            // Manipulate stack directly since we leave using DISPATCH_INLINED().
-            STACK_SHRINK(oparg + 2);
-            JUMPBY(INLINE_CACHE_ENTRIES_CALL);
-            frame->return_offset = 0;
-            DISPATCH_INLINED(new_frame);
         }
 
-        inst(CALL_PY_WITH_DEFAULTS, (unused/1, func_version/2, method, callable, args[oparg] -- unused)) {
-            assert(kwnames == NULL);
-            DEOPT_IF(tstate->interp->eval_frame, CALL);
-            int is_meth = method != NULL;
+        // The 'unused' output effect represents the return value
+        // (which will be pushed when the frame returns).
+        // It is needed so CALL_PY_EXACT_ARGS matches its family.
+        op(_PUSH_FRAME, (new_frame: _PyInterpreterFrame* -- unused if (0))) {
+            // Write it out explicitly because it's subtly different.
+            // Eventually this should be the only occurrence of this code.
+            assert(tstate->interp->eval_frame == NULL);
+            STORE_SP();
+            new_frame->previous = frame;
+            CALL_STAT_INC(inlined_py_calls);
+            frame = tstate->current_frame = new_frame;
+            tstate->py_recursion_remaining--;
+            LOAD_SP();
+            LOAD_IP(0);
+#if LLTRACE && TIER_ONE
+            lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+            if (lltrace < 0) {
+                goto exit_unwind;
+            }
+#endif
+        }
+
+        macro(CALL_BOUND_METHOD_EXACT_ARGS) =
+            unused/1 + // Skip over the counter
+            _CHECK_PEP_523 +
+            _CHECK_CALL_BOUND_METHOD_EXACT_ARGS +
+            _INIT_CALL_BOUND_METHOD_EXACT_ARGS +
+            _CHECK_FUNCTION_EXACT_ARGS +
+            _CHECK_STACK_SPACE +
+            _INIT_CALL_PY_EXACT_ARGS +
+            _SAVE_RETURN_OFFSET +
+            _PUSH_FRAME;
+
+        macro(CALL_PY_EXACT_ARGS) =
+            unused/1 + // Skip over the counter
+            _CHECK_PEP_523 +
+            _CHECK_FUNCTION_EXACT_ARGS +
+            _CHECK_STACK_SPACE +
+            _INIT_CALL_PY_EXACT_ARGS +
+            _SAVE_RETURN_OFFSET +
+            _PUSH_FRAME;
+
+        inst(CALL_PY_WITH_DEFAULTS, (unused/1, func_version/2, callable, self_or_null, args[oparg] -- unused)) {
+            DEOPT_IF(tstate->interp->eval_frame);
             int argcount = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 argcount++;
             }
-            DEOPT_IF(!PyFunction_Check(callable), CALL);
+            DEOPT_IF(!PyFunction_Check(callable));
             PyFunctionObject *func = (PyFunctionObject *)callable;
-            DEOPT_IF(func->func_version != func_version, CALL);
+            DEOPT_IF(func->func_version != func_version);
             PyCodeObject *code = (PyCodeObject *)func->func_code;
             assert(func->func_defaults);
             assert(PyTuple_CheckExact(func->func_defaults));
             int defcount = (int)PyTuple_GET_SIZE(func->func_defaults);
             assert(defcount <= code->co_argcount);
             int min_args = code->co_argcount - defcount;
-            DEOPT_IF(argcount > code->co_argcount, CALL);
-            DEOPT_IF(argcount < min_args, CALL);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
+            DEOPT_IF(argcount > code->co_argcount);
+            DEOPT_IF(argcount < min_args);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
             STAT_INC(CALL, hit);
             _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, func, code->co_argcount);
             for (int i = 0; i < argcount; i++) {
@@ -2713,28 +3198,25 @@ dummy_func(
             }
             // Manipulate stack and cache directly since we leave using DISPATCH_INLINED().
             STACK_SHRINK(oparg + 2);
-            JUMPBY(INLINE_CACHE_ENTRIES_CALL);
-            frame->return_offset = 0;
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
             DISPATCH_INLINED(new_frame);
         }
 
-        inst(CALL_NO_KW_TYPE_1, (unused/1, unused/2, null, callable, args[oparg] -- res)) {
-            assert(kwnames == NULL);
+        inst(CALL_TYPE_1, (unused/1, unused/2, callable, null, args[oparg] -- res)) {
             assert(oparg == 1);
-            DEOPT_IF(null != NULL, CALL);
+            DEOPT_IF(null != NULL);
             PyObject *obj = args[0];
-            DEOPT_IF(callable != (PyObject *)&PyType_Type, CALL);
+            DEOPT_IF(callable != (PyObject *)&PyType_Type);
             STAT_INC(CALL, hit);
             res = Py_NewRef(Py_TYPE(obj));
             Py_DECREF(obj);
             Py_DECREF(&PyType_Type);  // I.e., callable
         }
 
-        inst(CALL_NO_KW_STR_1, (unused/1, unused/2, null, callable, args[oparg] -- res)) {
-            assert(kwnames == NULL);
+        inst(CALL_STR_1, (unused/1, unused/2, callable, null, args[oparg] -- res)) {
             assert(oparg == 1);
-            DEOPT_IF(null != NULL, CALL);
-            DEOPT_IF(callable != (PyObject *)&PyUnicode_Type, CALL);
+            DEOPT_IF(null != NULL);
+            DEOPT_IF(callable != (PyObject *)&PyUnicode_Type);
             STAT_INC(CALL, hit);
             PyObject *arg = args[0];
             res = PyObject_Str(arg);
@@ -2744,11 +3226,10 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_NO_KW_TUPLE_1, (unused/1, unused/2, null, callable, args[oparg] -- res)) {
-            assert(kwnames == NULL);
+        inst(CALL_TUPLE_1, (unused/1, unused/2, callable, null, args[oparg] -- res)) {
             assert(oparg == 1);
-            DEOPT_IF(null != NULL, CALL);
-            DEOPT_IF(callable != (PyObject *)&PyTuple_Type, CALL);
+            DEOPT_IF(null != NULL);
+            DEOPT_IF(callable != (PyObject *)&PyTuple_Type);
             STAT_INC(CALL, hit);
             PyObject *arg = args[0];
             res = PySequence_Tuple(arg);
@@ -2758,22 +3239,77 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_BUILTIN_CLASS, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
-            int is_meth = method != NULL;
+        inst(CALL_ALLOC_AND_ENTER_INIT, (unused/1, unused/2, callable, null, args[oparg] -- unused)) {
+            /* This instruction does the following:
+             * 1. Creates the object (by calling ``object.__new__``)
+             * 2. Pushes a shim frame to the frame stack (to cleanup after ``__init__``)
+             * 3. Pushes the frame for ``__init__`` to the frame stack
+             * */
+            _PyCallCache *cache = (_PyCallCache *)&this_instr[1];
+            DEOPT_IF(null != NULL);
+            DEOPT_IF(!PyType_Check(callable));
+            PyTypeObject *tp = (PyTypeObject *)callable;
+            DEOPT_IF(tp->tp_version_tag != read_u32(cache->func_version));
+            PyHeapTypeObject *cls = (PyHeapTypeObject *)callable;
+            PyFunctionObject *init = (PyFunctionObject *)cls->_spec_cache.init;
+            PyCodeObject *code = (PyCodeObject *)init->func_code;
+            DEOPT_IF(code->co_argcount != oparg+1);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize + _Py_InitCleanup.co_framesize));
+            STAT_INC(CALL, hit);
+            PyObject *self = _PyType_NewManagedObject(tp);
+            if (self == NULL) {
+                GOTO_ERROR(error);
+            }
+            Py_DECREF(tp);
+            _PyInterpreterFrame *shim = _PyFrame_PushTrampolineUnchecked(
+                tstate, (PyCodeObject *)&_Py_InitCleanup, 1);
+            assert(_PyCode_CODE((PyCodeObject *)shim->f_executable)[0].op.code == EXIT_INIT_CHECK);
+            /* Push self onto stack of shim */
+            Py_INCREF(self);
+            shim->localsplus[0] = self;
+            Py_INCREF(init);
+            _PyInterpreterFrame *init_frame = _PyFrame_PushUnchecked(tstate, init, oparg+1);
+            /* Copy self followed by args to __init__ frame */
+            init_frame->localsplus[0] = self;
+            for (int i = 0; i < oparg; i++) {
+                init_frame->localsplus[i+1] = args[i];
+            }
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            STACK_SHRINK(oparg+2);
+            _PyFrame_SetStackPointer(frame, stack_pointer);
+            /* Link frames */
+            init_frame->previous = shim;
+            shim->previous = frame;
+            frame = tstate->current_frame = init_frame;
+            CALL_STAT_INC(inlined_py_calls);
+            /* Account for pushing the extra frame.
+             * We don't check recursion depth here,
+             * as it will be checked after start_frame */
+            tstate->py_recursion_remaining--;
+            goto start_frame;
+        }
+
+        inst(EXIT_INIT_CHECK, (should_be_none -- )) {
+            assert(STACK_LEVEL() == 2);
+            if (should_be_none != Py_None) {
+                PyErr_Format(PyExc_TypeError,
+                    "__init__() should return None, not '%.200s'",
+                    Py_TYPE(should_be_none)->tp_name);
+                GOTO_ERROR(error);
+            }
+        }
+
+        inst(CALL_BUILTIN_CLASS, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             int total_args = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            int kwnames_len = KWNAMES_LEN();
-            DEOPT_IF(!PyType_Check(callable), CALL);
+            DEOPT_IF(!PyType_Check(callable));
             PyTypeObject *tp = (PyTypeObject *)callable;
-            DEOPT_IF(tp->tp_vectorcall == NULL, CALL);
+            DEOPT_IF(tp->tp_vectorcall == NULL);
             STAT_INC(CALL, hit);
-            res = tp->tp_vectorcall((PyObject *)tp, args,
-                                    total_args - kwnames_len, kwnames);
-            kwnames = NULL;
+            res = tp->tp_vectorcall((PyObject *)tp, args, total_args, NULL);
             /* Free the arguments. */
             for (int i = 0; i < total_args; i++) {
                 Py_DECREF(args[i]);
@@ -2783,25 +3319,22 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_NO_KW_BUILTIN_O, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
+        inst(CALL_BUILTIN_O, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             /* Builtin METH_O functions */
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
             int total_args = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            DEOPT_IF(total_args != 1, CALL);
-            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
-            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_O, CALL);
+            DEOPT_IF(total_args != 1);
+            DEOPT_IF(!PyCFunction_CheckExact(callable));
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_O);
             STAT_INC(CALL, hit);
             PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
             // This is slower but CPython promises to check all non-vectorcall
             // function calls.
             if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
-                goto error;
+                GOTO_ERROR(error);
             }
             PyObject *arg = args[0];
             res = _PyCFunction_TrampolineCall(cfunc, PyCFunction_GET_SELF(callable), arg);
@@ -2814,18 +3347,15 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_NO_KW_BUILTIN_FAST, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
+        inst(CALL_BUILTIN_FAST, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             /* Builtin METH_FASTCALL functions, without keywords */
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
             int total_args = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
-            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_FASTCALL, CALL);
+            DEOPT_IF(!PyCFunction_CheckExact(callable));
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_FASTCALL);
             STAT_INC(CALL, hit);
             PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
             /* res = func(self, args, nargs) */
@@ -2849,31 +3379,22 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_BUILTIN_FAST_WITH_KEYWORDS, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
+        inst(CALL_BUILTIN_FAST_WITH_KEYWORDS, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             /* Builtin METH_FASTCALL | METH_KEYWORDS functions */
-            int is_meth = method != NULL;
             int total_args = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
-            DEOPT_IF(PyCFunction_GET_FLAGS(callable) !=
-                (METH_FASTCALL | METH_KEYWORDS), CALL);
+            DEOPT_IF(!PyCFunction_CheckExact(callable));
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != (METH_FASTCALL | METH_KEYWORDS));
             STAT_INC(CALL, hit);
             /* res = func(self, args, nargs, kwnames) */
             _PyCFunctionFastWithKeywords cfunc =
                 (_PyCFunctionFastWithKeywords)(void(*)(void))
                 PyCFunction_GET_FUNCTION(callable);
-            res = cfunc(
-                PyCFunction_GET_SELF(callable),
-                args,
-                total_args - KWNAMES_LEN(),
-                kwnames
-            );
+            res = cfunc(PyCFunction_GET_SELF(callable), args, total_args, NULL);
             assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            kwnames = NULL;
 
             /* Free the arguments. */
             for (int i = 0; i < total_args; i++) {
@@ -2884,24 +3405,21 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_NO_KW_LEN, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
-            assert(kwnames == NULL);
+        inst(CALL_LEN, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             /* len(o) */
-            int is_meth = method != NULL;
             int total_args = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            DEOPT_IF(total_args != 1, CALL);
-            PyInterpreterState *interp = _PyInterpreterState_GET();
-            DEOPT_IF(callable != interp->callable_cache.len, CALL);
+            DEOPT_IF(total_args != 1);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.len);
             STAT_INC(CALL, hit);
             PyObject *arg = args[0];
             Py_ssize_t len_i = PyObject_Length(arg);
             if (len_i < 0) {
-                goto error;
+                GOTO_ERROR(error);
             }
             res = PyLong_FromSsize_t(len_i);
             assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
@@ -2911,25 +3429,22 @@ dummy_func(
             ERROR_IF(res == NULL, error);
         }
 
-        inst(CALL_NO_KW_ISINSTANCE, (unused/1, unused/2, method, callable, args[oparg] -- res)) {
-            assert(kwnames == NULL);
+        inst(CALL_ISINSTANCE, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             /* isinstance(o, o2) */
-            int is_meth = method != NULL;
             int total_args = oparg;
-            if (is_meth) {
-                callable = method;
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            DEOPT_IF(total_args != 2, CALL);
-            PyInterpreterState *interp = _PyInterpreterState_GET();
-            DEOPT_IF(callable != interp->callable_cache.isinstance, CALL);
+            DEOPT_IF(total_args != 2);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.isinstance);
             STAT_INC(CALL, hit);
             PyObject *cls = args[1];
             PyObject *inst = args[0];
             int retval = PyObject_IsInstance(inst, cls);
             if (retval < 0) {
-                goto error;
+                GOTO_ERROR(error);
             }
             res = PyBool_FromLong(retval);
             assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
@@ -2941,49 +3456,45 @@ dummy_func(
         }
 
         // This is secretly a super-instruction
-        inst(CALL_NO_KW_LIST_APPEND, (unused/1, unused/2, method, self, args[oparg] -- unused)) {
-            assert(kwnames == NULL);
+        inst(CALL_LIST_APPEND, (unused/1, unused/2, callable, self, args[oparg] -- unused)) {
             assert(oparg == 1);
-            assert(method != NULL);
-            PyInterpreterState *interp = _PyInterpreterState_GET();
-            DEOPT_IF(method != interp->callable_cache.list_append, CALL);
-            DEOPT_IF(!PyList_Check(self), CALL);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.list_append);
+            assert(self != NULL);
+            DEOPT_IF(!PyList_Check(self));
             STAT_INC(CALL, hit);
             if (_PyList_AppendTakeRef((PyListObject *)self, args[0]) < 0) {
                 goto pop_1_error;  // Since arg is DECREF'ed already
             }
             Py_DECREF(self);
-            Py_DECREF(method);
+            Py_DECREF(callable);
             STACK_SHRINK(3);
-            // CALL + POP_TOP
-            JUMPBY(INLINE_CACHE_ENTRIES_CALL + 1);
-            assert(next_instr[-1].op.code == POP_TOP);
+            // Skip POP_TOP
+            assert(next_instr->op.code == POP_TOP);
+            SKIP_OVER(1);
             DISPATCH();
         }
 
-        inst(CALL_NO_KW_METHOD_DESCRIPTOR_O, (unused/1, unused/2, method, unused, args[oparg] -- res)) {
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
+        inst(CALL_METHOD_DESCRIPTOR_O, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             int total_args = oparg;
-            if (is_meth) {
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            PyMethodDescrObject *callable =
-                (PyMethodDescrObject *)PEEK(total_args + 1);
-            DEOPT_IF(total_args != 2, CALL);
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            DEOPT_IF(meth->ml_flags != METH_O, CALL);
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(total_args != 2);
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type));
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != METH_O);
             PyObject *arg = args[1];
             PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, callable->d_common.d_type), CALL);
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type));
             STAT_INC(CALL, hit);
             PyCFunction cfunc = meth->ml_meth;
             // This is slower but CPython promises to check all non-vectorcall
             // function calls.
             if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
-                goto error;
+                GOTO_ERROR(error);
             }
             res = _PyCFunction_TrampolineCall(cfunc, self, arg);
             _Py_LeaveRecursiveCallTstate(tstate);
@@ -2995,28 +3506,25 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS, (unused/1, unused/2, method, unused, args[oparg] -- res)) {
-            int is_meth = method != NULL;
+        inst(CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             int total_args = oparg;
-            if (is_meth) {
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            PyMethodDescrObject *callable =
-                (PyMethodDescrObject *)PEEK(total_args + 1);
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            DEOPT_IF(meth->ml_flags != (METH_FASTCALL|METH_KEYWORDS), CALL);
-            PyTypeObject *d_type = callable->d_common.d_type;
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type));
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != (METH_FASTCALL|METH_KEYWORDS));
+            PyTypeObject *d_type = method->d_common.d_type;
             PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, d_type), CALL);
+            DEOPT_IF(!Py_IS_TYPE(self, d_type));
             STAT_INC(CALL, hit);
             int nargs = total_args - 1;
             _PyCFunctionFastWithKeywords cfunc =
                 (_PyCFunctionFastWithKeywords)(void(*)(void))meth->ml_meth;
-            res = cfunc(self, args + 1, nargs - KWNAMES_LEN(), kwnames);
+            res = cfunc(self, args + 1, nargs, NULL);
             assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            kwnames = NULL;
 
             /* Free the arguments. */
             for (int i = 0; i < total_args; i++) {
@@ -3027,28 +3535,26 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS, (unused/1, unused/2, method, unused, args[oparg] -- res)) {
-            assert(kwnames == NULL);
+        inst(CALL_METHOD_DESCRIPTOR_NOARGS, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             assert(oparg == 0 || oparg == 1);
-            int is_meth = method != NULL;
             int total_args = oparg;
-            if (is_meth) {
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            DEOPT_IF(total_args != 1, CALL);
-            PyMethodDescrObject *callable = (PyMethodDescrObject *)SECOND();
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
+            DEOPT_IF(total_args != 1);
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type));
+            PyMethodDef *meth = method->d_method;
             PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, callable->d_common.d_type), CALL);
-            DEOPT_IF(meth->ml_flags != METH_NOARGS, CALL);
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type));
+            DEOPT_IF(meth->ml_flags != METH_NOARGS);
             STAT_INC(CALL, hit);
             PyCFunction cfunc = meth->ml_meth;
             // This is slower but CPython promises to check all non-vectorcall
             // function calls.
             if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
-                goto error;
+                GOTO_ERROR(error);
             }
             res = _PyCFunction_TrampolineCall(cfunc, self, NULL);
             _Py_LeaveRecursiveCallTstate(tstate);
@@ -3059,22 +3565,19 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
-        inst(CALL_NO_KW_METHOD_DESCRIPTOR_FAST, (unused/1, unused/2, method, unused, args[oparg] -- res)) {
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
+        inst(CALL_METHOD_DESCRIPTOR_FAST, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
             int total_args = oparg;
-            if (is_meth) {
+            if (self_or_null != NULL) {
                 args--;
                 total_args++;
             }
-            PyMethodDescrObject *callable =
-                (PyMethodDescrObject *)PEEK(total_args + 1);
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
             /* Builtin METH_FASTCALL methods, without keywords */
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            DEOPT_IF(meth->ml_flags != METH_FASTCALL, CALL);
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type));
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != METH_FASTCALL);
             PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, callable->d_common.d_type), CALL);
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type));
             STAT_INC(CALL, hit);
             _PyCFunctionFast cfunc =
                 (_PyCFunctionFast)(void(*)(void))meth->ml_meth;
@@ -3090,21 +3593,107 @@ dummy_func(
             CHECK_EVAL_BREAKER();
         }
 
+        inst(INSTRUMENTED_CALL_KW, ( -- )) {
+            int is_meth = PEEK(oparg + 2) != NULL;
+            int total_args = oparg + is_meth;
+            PyObject *function = PEEK(oparg + 3);
+            PyObject *arg = total_args == 0 ? &_PyInstrumentation_MISSING
+                                            : PEEK(total_args + 1);
+            int err = _Py_call_instrumentation_2args(
+                    tstate, PY_MONITORING_EVENT_CALL,
+                    frame, this_instr, function, arg);
+            ERROR_IF(err, error);
+            GO_TO_INSTRUCTION(CALL_KW);
+        }
+
+        inst(CALL_KW, (callable, self_or_null, args[oparg], kwnames -- res)) {
+            // oparg counts all of the args, but *not* self:
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            if (self_or_null == NULL && Py_TYPE(callable) == &PyMethod_Type) {
+                args--;
+                total_args++;
+                PyObject *self = ((PyMethodObject *)callable)->im_self;
+                args[0] = Py_NewRef(self);
+                PyObject *method = ((PyMethodObject *)callable)->im_func;
+                args[-1] = Py_NewRef(method);
+                Py_DECREF(callable);
+                callable = method;
+            }
+            int positional_args = total_args - (int)PyTuple_GET_SIZE(kwnames);
+            // Check if the call can be inlined or not
+            if (Py_TYPE(callable) == &PyFunction_Type &&
+                tstate->interp->eval_frame == NULL &&
+                ((PyFunctionObject *)callable)->vectorcall == _PyFunction_Vectorcall)
+            {
+                int code_flags = ((PyCodeObject*)PyFunction_GET_CODE(callable))->co_flags;
+                PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(callable));
+                _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit(
+                    tstate, (PyFunctionObject *)callable, locals,
+                    args, positional_args, kwnames
+                );
+                Py_DECREF(kwnames);
+                // Manipulate stack directly since we leave using DISPATCH_INLINED().
+                STACK_SHRINK(oparg + 3);
+                // The frame has stolen all the arguments from the stack,
+                // so there is no need to clean them up.
+                if (new_frame == NULL) {
+                    GOTO_ERROR(error);
+                }
+                assert(next_instr - this_instr == 1);
+                frame->return_offset = 1;
+                DISPATCH_INLINED(new_frame);
+            }
+            /* Callable is not a normal Python function */
+            res = PyObject_Vectorcall(
+                callable, args,
+                positional_args | PY_VECTORCALL_ARGUMENTS_OFFSET,
+                kwnames);
+            if (opcode == INSTRUMENTED_CALL_KW) {
+                PyObject *arg = total_args == 0 ?
+                    &_PyInstrumentation_MISSING : args[0];
+                if (res == NULL) {
+                    _Py_call_instrumentation_exc2(
+                        tstate, PY_MONITORING_EVENT_C_RAISE,
+                        frame, this_instr, callable, arg);
+                }
+                else {
+                    int err = _Py_call_instrumentation_2args(
+                        tstate, PY_MONITORING_EVENT_C_RETURN,
+                        frame, this_instr, callable, arg);
+                    if (err < 0) {
+                        Py_CLEAR(res);
+                    }
+                }
+            }
+            Py_DECREF(kwnames);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(callable);
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            ERROR_IF(res == NULL, error);
+            CHECK_EVAL_BREAKER();
+        }
+
         inst(INSTRUMENTED_CALL_FUNCTION_EX, ( -- )) {
             GO_TO_INSTRUCTION(CALL_FUNCTION_EX);
         }
 
-        inst(CALL_FUNCTION_EX, (unused, func, callargs, kwargs if (oparg & 1) -- result)) {
+        inst(CALL_FUNCTION_EX, (func, unused, callargs, kwargs if (oparg & 1) -- result)) {
             // DICT_MERGE is called before this opcode if there are kwargs.
             // It converts all dict subtypes in kwargs into regular dicts.
             assert(kwargs == NULL || PyDict_CheckExact(kwargs));
             if (!PyTuple_CheckExact(callargs)) {
                 if (check_args_iterable(tstate, func, callargs) < 0) {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
                 PyObject *tuple = PySequence_Tuple(callargs);
                 if (tuple == NULL) {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
                 Py_SETREF(callargs, tuple);
             }
@@ -3117,18 +3706,18 @@ dummy_func(
                     PyTuple_GET_ITEM(callargs, 0) : Py_None;
                 int err = _Py_call_instrumentation_2args(
                     tstate, PY_MONITORING_EVENT_CALL,
-                    frame, next_instr-1, func, arg);
-                if (err) goto error;
+                    frame, this_instr, func, arg);
+                if (err) GOTO_ERROR(error);
                 result = PyObject_Call(func, callargs, kwargs);
                 if (result == NULL) {
                     _Py_call_instrumentation_exc2(
                         tstate, PY_MONITORING_EVENT_C_RAISE,
-                        frame, next_instr-1, func, arg);
+                        frame, this_instr, func, arg);
                 }
                 else {
                     int err = _Py_call_instrumentation_2args(
                         tstate, PY_MONITORING_EVENT_C_RETURN,
-                        frame, next_instr-1, func, arg);
+                        frame, this_instr, func, arg);
                     if (err < 0) {
                         Py_CLEAR(result);
                     }
@@ -3149,64 +3738,73 @@ dummy_func(
                     // Need to manually shrink the stack since we exit with DISPATCH_INLINED.
                     STACK_SHRINK(oparg + 3);
                     if (new_frame == NULL) {
-                        goto error;
+                        GOTO_ERROR(error);
                     }
-                    frame->return_offset = 0;
+                    assert(next_instr - this_instr == 1);
+                    frame->return_offset = 1;
                     DISPATCH_INLINED(new_frame);
                 }
                 result = PyObject_Call(func, callargs, kwargs);
             }
             DECREF_INPUTS();
-            assert(PEEK(3 + (oparg & 1)) == NULL);
+            assert(PEEK(2 + (oparg & 1)) == NULL);
             ERROR_IF(result == NULL, error);
             CHECK_EVAL_BREAKER();
         }
 
-        inst(MAKE_FUNCTION, (defaults    if (oparg & 0x01),
-                             kwdefaults  if (oparg & 0x02),
-                             annotations if (oparg & 0x04),
-                             closure     if (oparg & 0x08),
-                             codeobj -- func)) {
+        inst(MAKE_FUNCTION, (codeobj -- func)) {
 
             PyFunctionObject *func_obj = (PyFunctionObject *)
                 PyFunction_New(codeobj, GLOBALS());
 
             Py_DECREF(codeobj);
             if (func_obj == NULL) {
-                goto error;
-            }
-
-            if (oparg & 0x08) {
-                assert(PyTuple_CheckExact(closure));
-                func_obj->func_closure = closure;
-            }
-            if (oparg & 0x04) {
-                assert(PyTuple_CheckExact(annotations));
-                func_obj->func_annotations = annotations;
-            }
-            if (oparg & 0x02) {
-                assert(PyDict_CheckExact(kwdefaults));
-                func_obj->func_kwdefaults = kwdefaults;
-            }
-            if (oparg & 0x01) {
-                assert(PyTuple_CheckExact(defaults));
-                func_obj->func_defaults = defaults;
+                GOTO_ERROR(error);
             }
 
-            func_obj->func_version = ((PyCodeObject *)codeobj)->co_version;
+            _PyFunction_SetVersion(
+                func_obj, ((PyCodeObject *)codeobj)->co_version);
             func = (PyObject *)func_obj;
         }
 
+        inst(SET_FUNCTION_ATTRIBUTE, (attr, func -- func)) {
+            assert(PyFunction_Check(func));
+            PyFunctionObject *func_obj = (PyFunctionObject *)func;
+            switch(oparg) {
+                case MAKE_FUNCTION_CLOSURE:
+                    assert(func_obj->func_closure == NULL);
+                    func_obj->func_closure = attr;
+                    break;
+                case MAKE_FUNCTION_ANNOTATIONS:
+                    assert(func_obj->func_annotations == NULL);
+                    func_obj->func_annotations = attr;
+                    break;
+                case MAKE_FUNCTION_KWDEFAULTS:
+                    assert(PyDict_CheckExact(attr));
+                    assert(func_obj->func_kwdefaults == NULL);
+                    func_obj->func_kwdefaults = attr;
+                    break;
+                case MAKE_FUNCTION_DEFAULTS:
+                    assert(PyTuple_CheckExact(attr));
+                    assert(func_obj->func_defaults == NULL);
+                    func_obj->func_defaults = attr;
+                    break;
+                default:
+                    Py_UNREACHABLE();
+            }
+        }
+
         inst(RETURN_GENERATOR, (--)) {
             assert(PyFunction_Check(frame->f_funcobj));
             PyFunctionObject *func = (PyFunctionObject *)frame->f_funcobj;
             PyGenObject *gen = (PyGenObject *)_Py_MakeCoro(func);
             if (gen == NULL) {
-                goto error;
+                GOTO_ERROR(error);
             }
             assert(EMPTY());
             _PyFrame_SetStackPointer(frame, stack_pointer);
             _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
+            frame->instr_ptr = next_instr;
             _PyFrame_Copy(frame, gen_frame);
             assert(frame->frame_obj == NULL);
             gen->gi_frame_state = FRAME_CREATED;
@@ -3215,8 +3813,9 @@ dummy_func(
             assert(frame != &entry_frame);
             _PyInterpreterFrame *prev = frame->previous;
             _PyThreadState_PopFrame(tstate, frame);
-            frame = cframe.current_frame = prev;
+            frame = tstate->current_frame = prev;
             _PyFrame_StackPush(frame, (PyObject *)gen);
+            LOAD_IP(frame->return_offset);
             goto resume_frame;
         }
 
@@ -3226,41 +3825,33 @@ dummy_func(
             ERROR_IF(slice == NULL, error);
         }
 
-        inst(FORMAT_VALUE, (value, fmt_spec if ((oparg & FVS_MASK) == FVS_HAVE_SPEC) -- result)) {
-            /* Handles f-string value formatting. */
-            PyObject *(*conv_fn)(PyObject *);
-            int which_conversion = oparg & FVC_MASK;
-
-            /* See if any conversion is specified. */
-            switch (which_conversion) {
-            case FVC_NONE:  conv_fn = NULL;           break;
-            case FVC_STR:   conv_fn = PyObject_Str;   break;
-            case FVC_REPR:  conv_fn = PyObject_Repr;  break;
-            case FVC_ASCII: conv_fn = PyObject_ASCII; break;
-            default:
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "unexpected conversion flag %d",
-                              which_conversion);
-                goto error;
-            }
+        inst(CONVERT_VALUE, (value -- result)) {
+            convertion_func_ptr  conv_fn;
+            assert(oparg >= FVC_STR && oparg <= FVC_ASCII);
+            conv_fn = CONVERSION_FUNCTIONS[oparg];
+            result = conv_fn(value);
+            Py_DECREF(value);
+            ERROR_IF(result == NULL, error);
+        }
 
-            /* If there's a conversion function, call it and replace
-               value with that result. Otherwise, just use value,
-               without conversion. */
-            if (conv_fn != NULL) {
-                result = conv_fn(value);
+        inst(FORMAT_SIMPLE, (value -- res)) {
+            /* If value is a unicode object, then we know the result
+             * of format(value) is value itself. */
+            if (!PyUnicode_CheckExact(value)) {
+                res = PyObject_Format(value, NULL);
                 Py_DECREF(value);
-                if (result == NULL) {
-                    Py_XDECREF(fmt_spec);
-                    ERROR_IF(true, error);
-                }
-                value = result;
+                ERROR_IF(res == NULL, error);
+            }
+            else {
+                res = value;
             }
+        }
 
-            result = PyObject_Format(value, fmt_spec);
+        inst(FORMAT_WITH_SPEC, (value, fmt_spec -- res)) {
+            res = PyObject_Format(value, fmt_spec);
             Py_DECREF(value);
-            Py_XDECREF(fmt_spec);
-            ERROR_IF(result == NULL, error);
+            Py_DECREF(fmt_spec);
+            ERROR_IF(res == NULL, error);
         }
 
         inst(COPY, (bottom, unused[oparg-1] -- bottom, unused[oparg-1], top)) {
@@ -3268,25 +3859,30 @@ dummy_func(
             top = Py_NewRef(bottom);
         }
 
-        inst(BINARY_OP, (unused/1, lhs, rhs -- res)) {
+        specializing op(_SPECIALIZE_BINARY_OP, (counter/1, lhs, rhs -- lhs, rhs)) {
+            TIER_ONE_ONLY
             #if ENABLE_SPECIALIZATION
-            _PyBinaryOpCache *cache = (_PyBinaryOpCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_BinaryOp(lhs, rhs, next_instr, oparg, &GETLOCAL(0));
+            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                next_instr = this_instr;
+                _Py_Specialize_BinaryOp(lhs, rhs, next_instr, oparg, LOCALS_ARRAY);
                 DISPATCH_SAME_OPARG();
             }
             STAT_INC(BINARY_OP, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
+            DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             #endif  /* ENABLE_SPECIALIZATION */
-            assert(0 <= oparg);
-            assert((unsigned)oparg < Py_ARRAY_LENGTH(binary_ops));
-            assert(binary_ops[oparg]);
-            res = binary_ops[oparg](lhs, rhs);
+            assert(NB_ADD <= oparg);
+            assert(oparg <= NB_INPLACE_XOR);
+        }
+
+        op(_BINARY_OP, (lhs, rhs -- res)) {
+            assert(_PyEval_BinaryOps[oparg]);
+            res = _PyEval_BinaryOps[oparg](lhs, rhs);
             DECREF_INPUTS();
             ERROR_IF(res == NULL, error);
         }
 
+        macro(BINARY_OP) = _SPECIALIZE_BINARY_OP + _BINARY_OP;
+
         inst(SWAP, (bottom, unused[oparg-2], top --
                     top, unused[oparg-2], bottom)) {
             assert(oparg >= 2);
@@ -3294,12 +3890,11 @@ dummy_func(
 
         inst(INSTRUMENTED_INSTRUCTION, ( -- )) {
             int next_opcode = _Py_call_instrumentation_instruction(
-                tstate, frame, next_instr-1);
+                tstate, frame, this_instr);
             ERROR_IF(next_opcode < 0, error);
-            next_instr--;
+            next_instr = this_instr;
             if (_PyOpcode_Caches[next_opcode]) {
-                _PyBinaryOpCache *cache = (_PyBinaryOpCache *)(next_instr+1);
-                INCREMENT_ADAPTIVE_COUNTER(cache->counter);
+                INCREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
             }
             assert(next_opcode > 0 && next_opcode < 256);
             opcode = next_opcode;
@@ -3307,64 +3902,68 @@ dummy_func(
         }
 
         inst(INSTRUMENTED_JUMP_FORWARD, ( -- )) {
-            INSTRUMENTED_JUMP(next_instr-1, next_instr+oparg, PY_MONITORING_EVENT_JUMP);
+            INSTRUMENTED_JUMP(this_instr, next_instr + oparg, PY_MONITORING_EVENT_JUMP);
         }
 
-        inst(INSTRUMENTED_JUMP_BACKWARD, ( -- )) {
-            INSTRUMENTED_JUMP(next_instr-1, next_instr-oparg, PY_MONITORING_EVENT_JUMP);
+        inst(INSTRUMENTED_JUMP_BACKWARD, (unused/1 -- )) {
             CHECK_EVAL_BREAKER();
+            INSTRUMENTED_JUMP(this_instr, next_instr - oparg, PY_MONITORING_EVENT_JUMP);
         }
 
-        inst(INSTRUMENTED_POP_JUMP_IF_TRUE, ( -- )) {
+        inst(INSTRUMENTED_POP_JUMP_IF_TRUE, (unused/1 -- )) {
             PyObject *cond = POP();
-            int err = PyObject_IsTrue(cond);
-            Py_DECREF(cond);
-            ERROR_IF(err < 0, error);
-            _Py_CODEUNIT *here = next_instr-1;
-            assert(err == 0 || err == 1);
-            int offset = err*oparg;
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
+            assert(PyBool_Check(cond));
+            int flag = Py_IsTrue(cond);
+            int offset = flag * oparg;
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
         }
 
-        inst(INSTRUMENTED_POP_JUMP_IF_FALSE, ( -- )) {
+        inst(INSTRUMENTED_POP_JUMP_IF_FALSE, (unused/1 -- )) {
             PyObject *cond = POP();
-            int err = PyObject_IsTrue(cond);
-            Py_DECREF(cond);
-            ERROR_IF(err < 0, error);
-            _Py_CODEUNIT *here = next_instr-1;
-            assert(err == 0 || err == 1);
-            int offset = (1-err)*oparg;
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
+            assert(PyBool_Check(cond));
+            int flag = Py_IsFalse(cond);
+            int offset = flag * oparg;
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
         }
 
-        inst(INSTRUMENTED_POP_JUMP_IF_NONE, ( -- )) {
+        inst(INSTRUMENTED_POP_JUMP_IF_NONE, (unused/1 -- )) {
             PyObject *value = POP();
-            _Py_CODEUNIT *here = next_instr-1;
+            int flag = Py_IsNone(value);
             int offset;
-            if (Py_IsNone(value)) {
-                _Py_DECREF_NO_DEALLOC(value);
+            if (flag) {
                 offset = oparg;
             }
             else {
                 Py_DECREF(value);
                 offset = 0;
             }
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
         }
 
-        inst(INSTRUMENTED_POP_JUMP_IF_NOT_NONE, ( -- )) {
+        inst(INSTRUMENTED_POP_JUMP_IF_NOT_NONE, (unused/1 -- )) {
             PyObject *value = POP();
-            _Py_CODEUNIT *here = next_instr-1;
             int offset;
-            if (Py_IsNone(value)) {
-                _Py_DECREF_NO_DEALLOC(value);
+            int nflag = Py_IsNone(value);
+            if (nflag) {
                 offset = 0;
             }
             else {
                 Py_DECREF(value);
-                 offset = oparg;
+                offset = oparg;
             }
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | !nflag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
         }
 
         inst(EXTENDED_ARG, ( -- )) {
@@ -3385,6 +3984,62 @@ dummy_func(
             Py_UNREACHABLE();
         }
 
+        ///////// Tier-2 only opcodes /////////
+
+        op (_GUARD_IS_TRUE_POP, (flag -- )) {
+            DEOPT_IF(Py_IsFalse(flag));
+            assert(Py_IsTrue(flag));
+        }
+
+        op (_GUARD_IS_FALSE_POP, (flag -- )) {
+            DEOPT_IF(Py_IsTrue(flag));
+            assert(Py_IsFalse(flag));
+        }
+
+        op (_GUARD_IS_NONE_POP, (val -- )) {
+            DEOPT_IF(!Py_IsNone(val));
+        }
+
+        op (_GUARD_IS_NOT_NONE_POP, (val -- )) {
+            DEOPT_IF(Py_IsNone(val));
+            Py_DECREF(val);
+        }
+
+        op(_JUMP_TO_TOP, (--)) {
+            next_uop = current_executor->trace;
+            CHECK_EVAL_BREAKER();
+        }
+
+        op(_SET_IP, (--)) {
+            TIER_TWO_ONLY
+            // TODO: Put the code pointer in `operand` to avoid indirection via `frame`
+            frame->instr_ptr = _PyCode_CODE(_PyFrame_GetCode(frame)) + oparg;
+        }
+
+        op(_SAVE_RETURN_OFFSET, (--)) {
+            #if TIER_ONE
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            #endif
+            #if TIER_TWO
+            frame->return_offset = oparg;
+            #endif
+        }
+
+        op(_EXIT_TRACE, (--)) {
+            TIER_TWO_ONLY
+            GOTO_TIER_ONE();
+        }
+
+        op(_INSERT, (unused[oparg], top -- top, unused[oparg])) {
+            // Inserts TOS at position specified by oparg;
+            memmove(&stack_pointer[-1 - oparg], &stack_pointer[-oparg], oparg * sizeof(stack_pointer[0]));
+        }
+
+        op(_CHECK_VALIDITY, (--)) {
+            TIER_TWO_ONLY
+            DEOPT_IF(!current_executor->base.vm_data.valid);
+        }
+
 
 // END BYTECODES //
 
@@ -3402,5 +4057,3 @@ dummy_func(
 }
 
 // Future families go below this point //
-
-family(store_fast) = { STORE_FAST, STORE_FAST__LOAD_FAST, STORE_FAST__STORE_FAST };
diff --git a/Python/ceval.c b/Python/ceval.c
index e8534ec6598e2b..f8fa50eb46c75e 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -4,25 +4,28 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
-#include "pycore_call.h"          // _PyObject_FastCallDictTstate()
+#include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _PyEval_SignalAsyncExc()
 #include "pycore_code.h"
+#include "pycore_emscripten_signal.h"  // _Py_CHECK_EMSCRIPTEN_SIGNALS
 #include "pycore_function.h"
+#include "pycore_instruments.h"
 #include "pycore_intrinsics.h"
 #include "pycore_long.h"          // _PyLong_GetZero()
-#include "pycore_instruments.h"
-#include "pycore_object.h"        // _PyObject_GC_TRACK()
 #include "pycore_moduleobject.h"  // PyModuleObject
-#include "pycore_opcode.h"        // EXTRA_CASES
+#include "pycore_object.h"        // _PyObject_GC_TRACK()
+#include "pycore_opcode_metadata.h" // EXTRA_CASES
+#include "pycore_opcode_utils.h"  // MAKE_FUNCTION_*
 #include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
-#include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_range.h"         // _PyRangeIterObject
+#include "pycore_setobject.h"     // _PySet_Update()
 #include "pycore_sliceobject.h"   // _PyBuildSlice_ConsumeRefs
 #include "pycore_sysmodule.h"     // _PySys_Audit()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
 #include "pycore_typeobject.h"    // _PySuper_Lookup()
-#include "pycore_emscripten_signal.h"  // _Py_CHECK_EMSCRIPTEN_SIGNALS
+#include "pycore_uops.h"          // _PyUOpExecutorObject
+#include "pycore_pyerrors.h"
 
 #include "pycore_dict.h"
 #include "dictobject.h"
@@ -31,10 +34,8 @@
 #include "opcode.h"
 #include "pydtrace.h"
 #include "setobject.h"
-#include "structmember.h"         // struct PyMemberDef, T_OFFSET_EX
 
-#include <ctype.h>
-#include <stdbool.h>
+#include <stdbool.h>              // bool
 
 #ifdef Py_DEBUG
    /* For debugging the interpreter: */
@@ -45,12 +46,13 @@
 #  error "ceval.c must be build with Py_BUILD_CORE define for best performance"
 #endif
 
-#if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS)
+#if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_GIL_DISABLED)
 // GH-89279: The MSVC compiler does not inline these static inline functions
 // in PGO build in _PyEval_EvalFrameDefault(), because this function is over
 // the limit of PGO, and that limit cannot be configured.
 // Define them as macros to make sure that they are always inlined by the
 // preprocessor.
+// TODO: implement Py_DECREF macro for Py_GIL_DISABLED
 
 #undef Py_DECREF
 #define Py_DECREF(arg) \
@@ -94,13 +96,6 @@
     } while (0)
 #endif
 
-// GH-89279: Similar to above, force inlining by using a macro.
-#if defined(_MSC_VER) && SIZEOF_INT == 4
-#define _Py_atomic_load_relaxed_int32(ATOMIC_VAL) (assert(sizeof((ATOMIC_VAL)->_value) == 4), *((volatile int*)&((ATOMIC_VAL)->_value)))
-#else
-#define _Py_atomic_load_relaxed_int32(ATOMIC_VAL) _Py_atomic_load_relaxed(ATOMIC_VAL)
-#endif
-
 
 #ifdef LLTRACE
 static void
@@ -113,11 +108,24 @@ dump_stack(_PyInterpreterFrame *frame, PyObject **stack_pointer)
         if (ptr != stack_base) {
             printf(", ");
         }
-        if (PyObject_Print(*ptr, stdout, 0) != 0) {
+        if (*ptr == NULL) {
+            printf("<nil>");
+            continue;
+        }
+        if (
+            *ptr == Py_None
+            || PyBool_Check(*ptr)
+            || PyLong_CheckExact(*ptr)
+            || PyFloat_CheckExact(*ptr)
+            || PyUnicode_CheckExact(*ptr)
+        ) {
+            if (PyObject_Print(*ptr, stdout, 0) == 0) {
+                continue;
+            }
             PyErr_Clear();
-            printf("<%s object at %p>",
-                   Py_TYPE(*ptr)->tp_name, (void *)(*ptr));
         }
+        // Don't call __repr__(), it might recurse into the interpreter.
+        printf("<%s at %p>", Py_TYPE(*ptr)->tp_name, (void *)(*ptr));
     }
     printf("]\n");
     fflush(stdout);
@@ -129,16 +137,16 @@ lltrace_instruction(_PyInterpreterFrame *frame,
                     PyObject **stack_pointer,
                     _Py_CODEUNIT *next_instr)
 {
-    /* This dump_stack() operation is risky, since the repr() of some
-       objects enters the interpreter recursively. It is also slow.
-       So you might want to comment it out. */
+    if (frame->owner == FRAME_OWNED_BY_CSTACK) {
+        return;
+    }
     dump_stack(frame, stack_pointer);
     int oparg = next_instr->op.arg;
     int opcode = next_instr->op.code;
     const char *opname = _PyOpcode_OpName[opcode];
     assert(opname != NULL);
-    int offset = (int)(next_instr - _PyCode_CODE(frame->f_code));
-    if (HAS_ARG((int)_PyOpcode_Deopt[opcode])) {
+    int offset = (int)(next_instr - _PyCode_CODE(_PyFrame_GetCode(frame)));
+    if (OPCODE_HAS_ARG((int)_PyOpcode_Deopt[opcode])) {
         printf("%d: %s %d\n", offset * 2, opname, oparg);
     }
     else {
@@ -150,7 +158,7 @@ static void
 lltrace_resume_frame(_PyInterpreterFrame *frame)
 {
     PyObject *fobj = frame->f_funcobj;
-    if (frame->owner == FRAME_OWNED_BY_CSTACK ||
+    if (!PyCode_Check(frame->f_executable) ||
         fobj == NULL ||
         !PyFunction_Check(fobj)
     ) {
@@ -180,18 +188,49 @@ lltrace_resume_frame(_PyInterpreterFrame *frame)
     fflush(stdout);
     PyErr_SetRaisedException(exc);
 }
+
+static int
+maybe_lltrace_resume_frame(_PyInterpreterFrame *frame, _PyInterpreterFrame *skip_frame, PyObject *globals)
+{
+    if (globals == NULL) {
+        return 0;
+    }
+    if (frame == skip_frame) {
+        return 0;
+    }
+    int r = PyDict_Contains(globals, &_Py_ID(__lltrace__));
+    if (r < 0) {
+        return -1;
+    }
+    int lltrace = r * 5;  // Levels 1-4 only trace uops
+    if (!lltrace) {
+        // Can also be controlled by environment variable
+        char *python_lltrace = Py_GETENV("PYTHON_LLTRACE");
+        if (python_lltrace != NULL && *python_lltrace >= '0') {
+            lltrace = *python_lltrace - '0';  // TODO: Parse an int and all that
+        }
+    }
+    if (lltrace >= 5) {
+        lltrace_resume_frame(frame);
+    }
+    return lltrace;
+}
+
 #endif
 
 static void monitor_raise(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
                  _Py_CODEUNIT *instr);
+static void monitor_reraise(PyThreadState *tstate,
+                 _PyInterpreterFrame *frame,
+                 _Py_CODEUNIT *instr);
 static int monitor_stop_iteration(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
                  _Py_CODEUNIT *instr);
 static void monitor_unwind(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
                  _Py_CODEUNIT *instr);
-static void monitor_handled(PyThreadState *tstate,
+static int monitor_handled(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
                  _Py_CODEUNIT *instr, PyObject *exc);
 static void monitor_throw(PyThreadState *tstate,
@@ -201,13 +240,7 @@ static void monitor_throw(PyThreadState *tstate,
 static PyObject * import_name(PyThreadState *, _PyInterpreterFrame *,
                               PyObject *, PyObject *, PyObject *);
 static PyObject * import_from(PyThreadState *, PyObject *, PyObject *);
-static void format_exc_check_arg(PyThreadState *, PyObject *, const char *, PyObject *);
-static void format_exc_unbound(PyThreadState *tstate, PyCodeObject *co, int oparg);
 static int check_args_iterable(PyThreadState *, PyObject *func, PyObject *vararg);
-static int check_except_type_valid(PyThreadState *tstate, PyObject* right);
-static int check_except_star_type_valid(PyThreadState *tstate, PyObject* right);
-static void format_kwargs_error(PyThreadState *, PyObject *func, PyObject *kwargs);
-static void format_awaitable_error(PyThreadState *, PyTypeObject *, int);
 static int get_exception_handler(PyCodeObject *, int, int*, int*, int*);
 static _PyInterpreterFrame *
 _PyEvalFramePushAndInit(PyThreadState *tstate, PyFunctionObject *func,
@@ -216,14 +249,6 @@ _PyEvalFramePushAndInit(PyThreadState *tstate, PyFunctionObject *func,
 static  _PyInterpreterFrame *
 _PyEvalFramePushAndInit_Ex(PyThreadState *tstate, PyFunctionObject *func,
     PyObject *locals, Py_ssize_t nargs, PyObject *callargs, PyObject *kwargs);
-static void
-_PyEvalFrameClearAndPop(PyThreadState *tstate, _PyInterpreterFrame *frame);
-
-#define UNBOUNDLOCAL_ERROR_MSG \
-    "cannot access local variable '%s' where it is not associated with a value"
-#define UNBOUNDFREE_ERROR_MSG \
-    "cannot access free variable '%s' where it is not associated with a" \
-    " value in enclosing scope"
 
 #ifdef HAVE_ERRNO_H
 #include <errno.h>
@@ -281,7 +306,7 @@ _Py_CheckRecursiveCall(PyThreadState *tstate, const char *where)
 }
 
 
-static const binaryfunc binary_ops[] = {
+const binaryfunc _PyEval_BinaryOps[] = {
     [NB_ADD] = PyNumber_Add,
     [NB_AND] = PyNumber_And,
     [NB_FLOOR_DIVIDE] = PyNumber_FloorDivide,
@@ -316,8 +341,8 @@ static const binaryfunc binary_ops[] = {
 
 // Return a tuple of values corresponding to keys, with error checks for
 // duplicate/missing keys.
-static PyObject*
-match_keys(PyThreadState *tstate, PyObject *map, PyObject *keys)
+PyObject *
+_PyEval_MatchKeys(PyThreadState *tstate, PyObject *map, PyObject *keys)
 {
     assert(PyTuple_CheckExact(keys));
     Py_ssize_t nkeys = PyTuple_GET_SIZE(keys);
@@ -398,7 +423,7 @@ match_keys(PyThreadState *tstate, PyObject *map, PyObject *keys)
 // Extract a named attribute from the subject, with additional bookkeeping to
 // raise TypeErrors for repeated lookups. On failure, return NULL (with no
 // error set). Use _PyErr_Occurred(tstate) to disambiguate.
-static PyObject*
+static PyObject *
 match_class_attr(PyThreadState *tstate, PyObject *subject, PyObject *type,
                  PyObject *name, PyObject *seen)
 {
@@ -413,18 +438,16 @@ match_class_attr(PyThreadState *tstate, PyObject *subject, PyObject *type,
         }
         return NULL;
     }
-    PyObject *attr = PyObject_GetAttr(subject, name);
-    if (attr == NULL && _PyErr_ExceptionMatches(tstate, PyExc_AttributeError)) {
-        _PyErr_Clear(tstate);
-    }
+    PyObject *attr;
+    (void)PyObject_GetOptionalAttr(subject, name, &attr);
     return attr;
 }
 
 // On success (match), return a tuple of extracted attributes. On failure (no
 // match), return NULL. Use _PyErr_Occurred(tstate) to disambiguate.
-static PyObject*
-match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
-            Py_ssize_t nargs, PyObject *kwargs)
+PyObject*
+_PyEval_MatchClass(PyThreadState *tstate, PyObject *subject, PyObject *type,
+                   Py_ssize_t nargs, PyObject *kwargs)
 {
     if (!PyType_Check(type)) {
         const char *e = "called match pattern must be a class";
@@ -451,7 +474,9 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
     // First, the positional subpatterns:
     if (nargs) {
         int match_self = 0;
-        match_args = PyObject_GetAttrString(type, "__match_args__");
+        if (PyObject_GetOptionalAttr(type, &_Py_ID(__match_args__), &match_args) < 0) {
+            goto fail;
+        }
         if (match_args) {
             if (!PyTuple_CheckExact(match_args)) {
                 const char *e = "%s.__match_args__ must be a tuple (got %s)";
@@ -461,8 +486,7 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
                 goto fail;
             }
         }
-        else if (_PyErr_ExceptionMatches(tstate, PyExc_AttributeError)) {
-            _PyErr_Clear(tstate);
+        else {
             // _Py_TPFLAGS_MATCH_SELF is only acknowledged if the type does not
             // define __match_args__. This is natural behavior for subclasses:
             // it's as if __match_args__ is some "magic" value that is lost as
@@ -471,9 +495,6 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
             match_self = PyType_HasFeature((PyTypeObject*)type,
                                             _Py_TPFLAGS_MATCH_SELF);
         }
-        else {
-            goto fail;
-        }
         assert(PyTuple_CheckExact(match_args));
         Py_ssize_t allowed = match_self ? 1 : PyTuple_GET_SIZE(match_args);
         if (allowed < nargs) {
@@ -486,7 +507,9 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
         }
         if (match_self) {
             // Easy. Copy the subject itself, and move on to kwargs.
-            PyList_Append(attrs, subject);
+            if (PyList_Append(attrs, subject) < 0) {
+                goto fail;
+            }
         }
         else {
             for (Py_ssize_t i = 0; i < nargs; i++) {
@@ -502,7 +525,10 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
                 if (attr == NULL) {
                     goto fail;
                 }
-                PyList_Append(attrs, attr);
+                if (PyList_Append(attrs, attr) < 0) {
+                    Py_DECREF(attr);
+                    goto fail;
+                }
                 Py_DECREF(attr);
             }
         }
@@ -515,7 +541,10 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
         if (attr == NULL) {
             goto fail;
         }
-        PyList_Append(attrs, attr);
+        if (PyList_Append(attrs, attr) < 0) {
+            Py_DECREF(attr);
+            goto fail;
+        }
         Py_DECREF(attr);
     }
     Py_SETREF(attrs, PyList_AsTuple(attrs));
@@ -532,11 +561,6 @@ match_class(PyThreadState *tstate, PyObject *subject, PyObject *type,
 
 
 static int do_raise(PyThreadState *tstate, PyObject *exc, PyObject *cause);
-static int exception_group_match(
-    PyObject* exc_value, PyObject *match_type,
-    PyObject **match, PyObject **rest);
-
-static int unpack_iterable(PyThreadState *, PyObject *, int, int, PyObject **);
 
 PyObject *
 PyEval_EvalCode(PyObject *co, PyObject *globals, PyObject *locals)
@@ -589,7 +613,6 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
 
 #include "ceval_macros.h"
 
-
 int _Py_CheckRecursiveCallPy(
     PyThreadState *tstate)
 {
@@ -611,16 +634,20 @@ int _Py_CheckRecursiveCallPy(
     return 0;
 }
 
-static inline int _Py_EnterRecursivePy(PyThreadState *tstate) {
-    return (tstate->py_recursion_remaining-- <= 0) &&
-        _Py_CheckRecursiveCallPy(tstate);
-}
 
+static const _Py_CODEUNIT _Py_INTERPRETER_TRAMPOLINE_INSTRUCTIONS[] = {
+    /* Put a NOP at the start, so that the IP points into
+    * the code, rather than before it */
+    { .op.code = NOP, .op.arg = 0 },
+    { .op.code = INTERPRETER_EXIT, .op.arg = 0 },  /* reached on return */
+    { .op.code = NOP, .op.arg = 0 },
+    { .op.code = INTERPRETER_EXIT, .op.arg = 0 },  /* reached on yield */
+    { .op.code = RESUME, .op.arg = RESUME_OPARG_DEPTH1_MASK | RESUME_AT_FUNC_START }
+};
 
-static inline void _Py_LeaveRecursiveCallPy(PyThreadState *tstate)  {
-    tstate->py_recursion_remaining++;
-}
+extern const struct _PyCode_DEF(8) _Py_InitCleanup;
 
+extern const char *_PyUOpName(int index);
 
 /* Disable unused label warnings.  They are handy for debugging, even
    if computed gotos aren't used. */
@@ -634,6 +661,20 @@ static inline void _Py_LeaveRecursiveCallPy(PyThreadState *tstate)  {
 #  pragma warning(disable:4102)
 #endif
 
+
+/* _PyEval_EvalFrameDefault() is a *big* function,
+ * so consume 3 units of C stack */
+#define PY_EVAL_C_STACK_UNITS 2
+
+#if defined(_MSC_VER) && defined(_Py_USING_PGO)
+/* gh-111786: _PyEval_EvalFrameDefault is too large to optimize for speed with
+   PGO on MSVC. Disable that optimization temporarily. If this is fixed
+   upstream, we should gate this on the version of MSVC.
+ */
+#  pragma optimize("t", off)
+/* This setting is reversed below following _PyEval_EvalFrameDefault */
+#endif
+
 PyObject* _Py_HOT_FUNCTION
 _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int throwflag)
 {
@@ -648,28 +689,16 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 #ifdef Py_STATS
     int lastopcode = 0;
 #endif
-    // opcode is an 8-bit value to improve the code generated by MSVC
-    // for the big switch below (in combination with the EXTRA_CASES macro).
-    uint8_t opcode;        /* Current opcode */
+    uint8_t opcode;    /* Current opcode */
     int oparg;         /* Current opcode argument, if any */
-    _Py_atomic_int * const eval_breaker = &tstate->interp->ceval.eval_breaker;
 #ifdef LLTRACE
     int lltrace = 0;
 #endif
 
-    _PyCFrame cframe;
     _PyInterpreterFrame  entry_frame;
-    PyObject *kwnames = NULL; // Borrowed reference. Reset by CALL instructions.
 
-    /* WARNING: Because the _PyCFrame lives on the C stack,
-     * but can be accessed from a heap allocated object (tstate)
-     * strict stack discipline must be maintained.
-     */
-    _PyCFrame *prev_cframe = tstate->cframe;
-    cframe.previous = prev_cframe;
-    tstate->cframe = &cframe;
 
-    assert(tstate->interp->interpreter_trampoline != NULL);
+
 #ifdef Py_DEBUG
     /* Set these to invalid but identifiable values for debugging. */
     entry_frame.f_funcobj = (PyObject*)0xaaa0;
@@ -678,17 +707,17 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
     entry_frame.f_globals = (PyObject*)0xaaa3;
     entry_frame.f_builtins = (PyObject*)0xaaa4;
 #endif
-    entry_frame.f_code = tstate->interp->interpreter_trampoline;
-    entry_frame.prev_instr =
-        _PyCode_CODE(tstate->interp->interpreter_trampoline);
+    entry_frame.f_executable = Py_None;
+    entry_frame.instr_ptr = (_Py_CODEUNIT *)_Py_INTERPRETER_TRAMPOLINE_INSTRUCTIONS + 1;
     entry_frame.stacktop = 0;
     entry_frame.owner = FRAME_OWNED_BY_CSTACK;
     entry_frame.return_offset = 0;
     /* Push frame */
-    entry_frame.previous = prev_cframe->current_frame;
+    entry_frame.previous = tstate->current_frame;
     frame->previous = &entry_frame;
-    cframe.current_frame = frame;
+    tstate->current_frame = frame;
 
+    tstate->c_recursion_remaining -= (PY_EVAL_C_STACK_UNITS - 1);
     if (_Py_EnterRecursiveCallTstate(tstate, "")) {
         tstate->c_recursion_remaining--;
         tstate->py_recursion_remaining--;
@@ -702,45 +731,35 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
         }
         /* Because this avoids the RESUME,
          * we need to update instrumentation */
-        _Py_Instrument(frame->f_code, tstate->interp);
-        monitor_throw(tstate, frame, frame->prev_instr);
+        _Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
+        monitor_throw(tstate, frame, frame->instr_ptr);
         /* TO DO -- Monitor throw entry. */
         goto resume_with_error;
     }
 
+    /* State shared between Tier 1 and Tier 2 interpreter */
+    _PyUOpExecutorObject *current_executor = NULL;
+
     /* Local "register" variables.
      * These are cached values from the frame and code object.  */
 
     _Py_CODEUNIT *next_instr;
     PyObject **stack_pointer;
 
-/* Sets the above local variables from the frame */
-#define SET_LOCALS_FROM_FRAME() \
-    assert(_PyInterpreterFrame_LASTI(frame) >= -1); \
-    /* Jump back to the last instruction executed... */ \
-    next_instr = frame->prev_instr + 1; \
-    stack_pointer = _PyFrame_GetStackPointer(frame);
 
 start_frame:
     if (_Py_EnterRecursivePy(tstate)) {
         goto exit_unwind;
     }
 
+    next_instr = frame->instr_ptr;
 resume_frame:
-    SET_LOCALS_FROM_FRAME();
+    stack_pointer = _PyFrame_GetStackPointer(frame);
 
 #ifdef LLTRACE
-    {
-        if (frame != &entry_frame) {
-            int r = PyDict_Contains(GLOBALS(), &_Py_ID(__lltrace__));
-            if (r < 0) {
-                goto exit_unwind;
-            }
-            lltrace = r;
-        }
-        if (lltrace) {
-            lltrace_resume_frame(frame);
-        }
+    lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+    if (lltrace < 0) {
+        goto exit_unwind;
     }
 #endif
 
@@ -753,18 +772,6 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 
     DISPATCH();
 
-handle_eval_breaker:
-
-    /* Do periodic things, like check for signals and async I/0.
-     * We need to do reasonably frequently, but not too frequently.
-     * All loops should include a check of the eval breaker.
-     * We also check on return from any builtin function.
-     */
-    if (_Py_HandlePending(tstate) != 0) {
-        goto error;
-    }
-    DISPATCH();
-
     {
     /* Start instructions */
 #if !USE_COMPUTED_GOTOS
@@ -776,7 +783,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 #include "generated_cases.c.h"
 
     /* INSTRUMENTED_LINE has to be here, rather than in bytecodes.c,
-     * because it needs to capture frame->prev_instr before it is updated,
+     * because it needs to capture frame->instr_ptr before it is updated,
      * as happens in the standard instruction prologue.
      */
 #if USE_COMPUTED_GOTOS
@@ -785,8 +792,8 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
         case INSTRUMENTED_LINE:
 #endif
     {
-        _Py_CODEUNIT *prev = frame->prev_instr;
-        _Py_CODEUNIT *here = frame->prev_instr = next_instr;
+        _Py_CODEUNIT *prev = frame->instr_ptr;
+        _Py_CODEUNIT *here = frame->instr_ptr = next_instr;
         _PyFrame_SetStackPointer(frame, stack_pointer);
         int original_opcode = _Py_call_instrumentation_line(
                 tstate, frame, here, prev);
@@ -795,7 +802,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
             next_instr = here+1;
             goto error;
         }
-        next_instr = frame->prev_instr;
+        next_instr = frame->instr_ptr;
         if (next_instr != here) {
             DISPATCH();
         }
@@ -813,14 +820,14 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 #if USE_COMPUTED_GOTOS
         _unknown_opcode:
 #else
-        EXTRA_CASES  // From opcode.h, a 'case' for each unused opcode
+        EXTRA_CASES  // From pycore_opcode_metadata.h, a 'case' for each unused opcode
 #endif
             /* Tell C compilers not to hold the opcode variable in the loop.
                next_instr points the current instruction without TARGET(). */
             opcode = next_instr->op.code;
             _PyErr_Format(tstate, PyExc_SystemError,
                           "%U:%d: unknown opcode %d",
-                          frame->f_code->co_filename,
+                          _PyFrame_GetCode(frame)->co_filename,
                           PyUnstable_InterpreterFrame_GetLine(frame),
                           opcode);
             goto error;
@@ -833,9 +840,9 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 
 unbound_local_error:
         {
-            format_exc_check_arg(tstate, PyExc_UnboundLocalError,
+            _PyEval_FormatExcCheckArg(tstate, PyExc_UnboundLocalError,
                 UNBOUNDLOCAL_ERROR_MSG,
-                PyTuple_GetItem(frame->f_code->co_localsplusnames, oparg)
+                PyTuple_GetItem(_PyFrame_GetCode(frame)->co_localsplusnames, oparg)
             );
             goto error;
         }
@@ -849,7 +856,6 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 pop_1_error:
     STACK_SHRINK(1);
 error:
-        kwnames = NULL;
         /* Double-check exception status. */
 #ifdef NDEBUG
         if (!_PyErr_Occurred(tstate)) {
@@ -869,13 +875,12 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
             }
         }
         monitor_raise(tstate, frame, next_instr-1);
-
 exception_unwind:
         {
-            /* We can't use frame->f_lasti here, as RERAISE may have set it */
+            /* We can't use frame->instr_ptr here, as RERAISE may have set it */
             int offset = INSTR_OFFSET()-1;
             int level, handler, lasti;
-            if (get_exception_handler(frame->f_code, offset, &level, &handler, &lasti) == 0) {
+            if (get_exception_handler(_PyFrame_GetCode(frame), offset, &level, &handler, &lasti) == 0) {
                 // No handlers, so exit.
                 assert(_PyErr_Occurred(tstate));
 
@@ -912,9 +917,17 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
                 Python main loop. */
             PyObject *exc = _PyErr_GetRaisedException(tstate);
             PUSH(exc);
-            JUMPTO(handler);
-            monitor_handled(tstate, frame, next_instr, exc);
+            next_instr = _PyCode_CODE(_PyFrame_GetCode(frame)) + handler;
+
+            if (monitor_handled(tstate, frame, next_instr, exc) < 0) {
+                goto exception_unwind;
+            }
             /* Resume normal execution */
+#ifdef LLTRACE
+            if (lltrace >= 5) {
+                lltrace_resume_frame(frame);
+            }
+#endif
             DISPATCH();
         }
     }
@@ -925,26 +938,160 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
     assert(frame != &entry_frame);
     // GH-99729: We need to unlink the frame *before* clearing it:
     _PyInterpreterFrame *dying = frame;
-    frame = cframe.current_frame = dying->previous;
-    _PyEvalFrameClearAndPop(tstate, dying);
+    frame = tstate->current_frame = dying->previous;
+    _PyEval_FrameClearAndPop(tstate, dying);
     frame->return_offset = 0;
     if (frame == &entry_frame) {
-        /* Restore previous cframe and exit */
-        tstate->cframe = cframe.previous;
-        assert(tstate->cframe->current_frame == frame->previous);
-        _Py_LeaveRecursiveCallTstate(tstate);
+        /* Restore previous frame and exit */
+        tstate->current_frame = frame->previous;
+        tstate->c_recursion_remaining += PY_EVAL_C_STACK_UNITS;
         return NULL;
     }
 
 resume_with_error:
-    SET_LOCALS_FROM_FRAME();
+    next_instr = frame->instr_ptr;
+    stack_pointer = _PyFrame_GetStackPointer(frame);
     goto error;
 
+
+
+// The Tier 2 interpreter is also here!
+enter_tier_two:
+
+#undef LOAD_IP
+#define LOAD_IP(UNUSED) (void)0
+
+#undef GOTO_ERROR
+#define GOTO_ERROR(LABEL) goto LABEL ## _tier_two
+
+#undef DEOPT_IF
+#define DEOPT_IF(COND, INSTNAME) \
+    if ((COND)) {                \
+        goto deoptimize;\
+    }
+
+#ifdef Py_STATS
+// Disable these macros that apply to Tier 1 stats when we are in Tier 2
+#undef STAT_INC
+#define STAT_INC(opname, name) ((void)0)
+#undef STAT_DEC
+#define STAT_DEC(opname, name) ((void)0)
+#undef CALL_STAT_INC
+#define CALL_STAT_INC(name) ((void)0)
+#endif
+
+#undef ENABLE_SPECIALIZATION
+#define ENABLE_SPECIALIZATION 0
+
+#ifdef Py_DEBUG
+    #define DPRINTF(level, ...) \
+        if (lltrace >= (level)) { printf(__VA_ARGS__); }
+#else
+    #define DPRINTF(level, ...)
+#endif
+
+    OPT_STAT_INC(traces_executed);
+    _PyUOpInstruction *next_uop = current_executor->trace;
+    uint16_t uopcode;
+#ifdef Py_STATS
+    uint64_t trace_uop_execution_counter = 0;
+#endif
+
+    for (;;) {
+        uopcode = next_uop->opcode;
+        DPRINTF(3,
+                "%4d: uop %s, oparg %d, operand %" PRIu64 ", target %d, stack_level %d\n",
+                (int)(next_uop - current_executor->trace),
+                _PyUOpName(uopcode),
+                next_uop->oparg,
+                next_uop->operand,
+                next_uop->target,
+                (int)(stack_pointer - _PyFrame_Stackbase(frame)));
+        next_uop++;
+        OPT_STAT_INC(uops_executed);
+        UOP_STAT_INC(uopcode, execution_count);
+#ifdef Py_STATS
+        trace_uop_execution_counter++;
+#endif
+
+        switch (uopcode) {
+
+#include "executor_cases.c.h"
+
+            default:
+#ifdef Py_DEBUG
+            {
+                fprintf(stderr, "Unknown uop %d, oparg %d, operand %" PRIu64 " @ %d\n",
+                        opcode, next_uop[-1].oparg, next_uop[-1].operand,
+                        (int)(next_uop - current_executor->trace - 1));
+                Py_FatalError("Unknown uop");
+            }
+#else
+            Py_UNREACHABLE();
+#endif
+
+        }
+    }
+
+// Jump here from ERROR_IF(..., unbound_local_error)
+unbound_local_error_tier_two:
+    _PyEval_FormatExcCheckArg(tstate, PyExc_UnboundLocalError,
+        UNBOUNDLOCAL_ERROR_MSG,
+        PyTuple_GetItem(_PyFrame_GetCode(frame)->co_localsplusnames, oparg)
+    );
+    goto error_tier_two;
+
+// JUMP to any of these from ERROR_IF(..., error)
+pop_4_error_tier_two:
+    STACK_SHRINK(1);
+pop_3_error_tier_two:
+    STACK_SHRINK(1);
+pop_2_error_tier_two:
+    STACK_SHRINK(1);
+pop_1_error_tier_two:
+    STACK_SHRINK(1);
+error_tier_two:
+    DPRINTF(2, "Error: [UOp %d (%s), oparg %d, operand %" PRIu64 ", target %d @ %d]\n",
+            uopcode, _PyUOpName(uopcode), next_uop[-1].oparg, next_uop[-1].operand, next_uop[-1].target,
+            (int)(next_uop - current_executor->trace - 1));
+    OPT_HIST(trace_uop_execution_counter, trace_run_length_hist);
+    frame->return_offset = 0;  // Don't leave this random
+    _PyFrame_SetStackPointer(frame, stack_pointer);
+    Py_DECREF(current_executor);
+    goto resume_with_error;
+
+// Jump here from DEOPT_IF()
+deoptimize:
+    // On DEOPT_IF we just repeat the last instruction.
+    // This presumes nothing was popped from the stack (nor pushed).
+    DPRINTF(2, "DEOPT: [UOp %d (%s), oparg %d, operand %" PRIu64 ", target %d @ %d]\n",
+            uopcode, _PyUOpName(uopcode), next_uop[-1].oparg, next_uop[-1].operand, next_uop[-1].target,
+            (int)(next_uop - current_executor->trace - 1));
+    OPT_HIST(trace_uop_execution_counter, trace_run_length_hist);
+    UOP_STAT_INC(uopcode, miss);
+    frame->return_offset = 0;  // Dispatch to frame->instr_ptr
+    _PyFrame_SetStackPointer(frame, stack_pointer);
+    frame->instr_ptr = next_uop[-1].target + _PyCode_CODE(_PyFrame_GetCode(frame));
+    Py_DECREF(current_executor);
+    // Fall through
+// Jump here from ENTER_EXECUTOR
+enter_tier_one:
+    next_instr = frame->instr_ptr;
+    goto resume_frame;
+
+// Jump here from _EXIT_TRACE
+exit_trace:
+    _PyFrame_SetStackPointer(frame, stack_pointer);
+    frame->instr_ptr = next_uop[-1].target + _PyCode_CODE(_PyFrame_GetCode(frame));
+    Py_DECREF(current_executor);
+    OPT_HIST(trace_uop_execution_counter, trace_run_length_hist);
+    goto enter_tier_one;
 }
 #if defined(__GNUC__)
 #  pragma GCC diagnostic pop
 #elif defined(_MSC_VER) /* MS_WINDOWS */
 #  pragma warning(pop)
+#  pragma optimize("", on)
 #endif
 
 static void
@@ -1284,7 +1431,7 @@ initialize_locals(PyThreadState *tstate, PyFunctionObject *func,
     if (co->co_flags & CO_VARARGS) {
         PyObject *u = NULL;
         if (argcount == n) {
-            u = Py_NewRef(&_Py_SINGLETON(tuple_empty));
+            u = (PyObject *)&_Py_SINGLETON(tuple_empty);
         }
         else {
             assert(args != NULL);
@@ -1352,9 +1499,33 @@ initialize_locals(PyThreadState *tstate, PyFunctionObject *func,
                     goto kw_fail;
                 }
 
-                _PyErr_Format(tstate, PyExc_TypeError,
-                            "%U() got an unexpected keyword argument '%S'",
-                          func->func_qualname, keyword);
+                PyObject* suggestion_keyword = NULL;
+                if (total_args > co->co_posonlyargcount) {
+                    PyObject* possible_keywords = PyList_New(total_args - co->co_posonlyargcount);
+
+                    if (!possible_keywords) {
+                        PyErr_Clear();
+                    } else {
+                        for (Py_ssize_t k = co->co_posonlyargcount; k < total_args; k++) {
+                            PyList_SET_ITEM(possible_keywords, k - co->co_posonlyargcount, co_varnames[k]);
+                        }
+
+                        suggestion_keyword = _Py_CalculateSuggestions(possible_keywords, keyword);
+                        Py_DECREF(possible_keywords);
+                    }
+                }
+
+                if (suggestion_keyword) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                "%U() got an unexpected keyword argument '%S'. Did you mean '%S'?",
+                                func->func_qualname, keyword, suggestion_keyword);
+                    Py_DECREF(suggestion_keyword);
+                } else {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                "%U() got an unexpected keyword argument '%S'",
+                                func->func_qualname, keyword);
+                }
+
                 goto kw_fail;
             }
 
@@ -1427,14 +1598,14 @@ initialize_locals(PyThreadState *tstate, PyFunctionObject *func,
                 continue;
             PyObject *varname = PyTuple_GET_ITEM(co->co_localsplusnames, i);
             if (func->func_kwdefaults != NULL) {
-                PyObject *def = PyDict_GetItemWithError(func->func_kwdefaults, varname);
+                PyObject *def;
+                if (PyDict_GetItemRef(func->func_kwdefaults, varname, &def) < 0) {
+                    goto fail_post_args;
+                }
                 if (def) {
-                    localsplus[i] = Py_NewRef(def);
+                    localsplus[i] = def;
                     continue;
                 }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto fail_post_args;
-                }
             }
             missing++;
         }
@@ -1469,12 +1640,12 @@ clear_thread_frame(PyThreadState *tstate, _PyInterpreterFrame * frame)
     assert(frame->owner == FRAME_OWNED_BY_THREAD);
     // Make sure that this is, indeed, the top frame. We can't check this in
     // _PyThreadState_PopFrame, since f_code is already cleared at that point:
-    assert((PyObject **)frame + frame->f_code->co_framesize ==
+    assert((PyObject **)frame + _PyFrame_GetCode(frame)->co_framesize ==
         tstate->datastack_top);
     tstate->c_recursion_remaining--;
     assert(frame->frame_obj == NULL || frame->frame_obj->f_frame == frame);
     _PyFrame_ClearExceptCode(frame);
-    Py_DECREF(frame->f_code);
+    Py_DECREF(frame->f_executable);
     tstate->c_recursion_remaining++;
     _PyThreadState_PopFrame(tstate, frame);
 }
@@ -1491,12 +1662,13 @@ clear_gen_frame(PyThreadState *tstate, _PyInterpreterFrame * frame)
     tstate->c_recursion_remaining--;
     assert(frame->frame_obj == NULL || frame->frame_obj->f_frame == frame);
     _PyFrame_ClearExceptCode(frame);
+    _PyErr_ClearExcState(&gen->gi_exc_state);
     tstate->c_recursion_remaining++;
     frame->previous = NULL;
 }
 
-static void
-_PyEvalFrameClearAndPop(PyThreadState *tstate, _PyInterpreterFrame * frame)
+void
+_PyEval_FrameClearAndPop(PyThreadState *tstate, _PyInterpreterFrame * frame)
 {
     if (frame->owner == FRAME_OWNED_BY_THREAD) {
         clear_thread_frame(tstate, frame);
@@ -1748,6 +1920,13 @@ do_raise(PyThreadState *tstate, PyObject *exc, PyObject *cause)
             fixed_cause = _PyObject_CallNoArgs(cause);
             if (fixed_cause == NULL)
                 goto raise_error;
+            if (!PyExceptionInstance_Check(fixed_cause)) {
+                _PyErr_Format(tstate, PyExc_TypeError,
+                              "calling %R should have returned an instance of "
+                              "BaseException, not %R",
+                              cause, Py_TYPE(fixed_cause));
+                goto raise_error;
+            }
             Py_DECREF(cause);
         }
         else if (PyExceptionInstance_Check(cause)) {
@@ -1783,9 +1962,9 @@ do_raise(PyThreadState *tstate, PyObject *exc, PyObject *cause)
    complicated for inlining).
 */
 
-static int
-exception_group_match(PyObject* exc_value, PyObject *match_type,
-                      PyObject **match, PyObject **rest)
+int
+_PyEval_ExceptionGroupMatch(PyObject* exc_value, PyObject *match_type,
+                            PyObject **match, PyObject **rest)
 {
     if (Py_IsNone(exc_value)) {
         *match = Py_NewRef(Py_None);
@@ -1846,9 +2025,9 @@ exception_group_match(PyObject* exc_value, PyObject *match_type,
    with a variable target.
 */
 
-static int
-unpack_iterable(PyThreadState *tstate, PyObject *v,
-                int argcnt, int argcntafter, PyObject **sp)
+int
+_PyEval_UnpackIterable(PyThreadState *tstate, PyObject *v,
+                       int argcnt, int argcntafter, PyObject **sp)
 {
     int i = 0, j = 0;
     Py_ssize_t ll = 0;
@@ -1943,7 +2122,7 @@ static int
 do_monitor_exc(PyThreadState *tstate, _PyInterpreterFrame *frame,
                _Py_CODEUNIT *instr, int event)
 {
-    assert(event < PY_MONITORING_UNGROUPED_EVENTS);
+    assert(event < _PY_MONITORING_UNGROUPED_EVENTS);
     PyObject *exc = PyErr_GetRaisedException();
     assert(exc != NULL);
     int err = _Py_call_instrumentation_arg(tstate, event, frame, instr, exc);
@@ -1951,43 +2130,56 @@ do_monitor_exc(PyThreadState *tstate, _PyInterpreterFrame *frame,
         PyErr_SetRaisedException(exc);
     }
     else {
+        assert(PyErr_Occurred());
         Py_DECREF(exc);
     }
     return err;
 }
 
-static inline int
-no_tools_for_event(PyThreadState *tstate, _PyInterpreterFrame *frame, int event)
+static inline bool
+no_tools_for_global_event(PyThreadState *tstate, int event)
+{
+    return tstate->interp->monitors.tools[event] == 0;
+}
+
+static inline bool
+no_tools_for_local_event(PyThreadState *tstate, _PyInterpreterFrame *frame, int event)
 {
-    _PyCoMonitoringData *data = frame->f_code->_co_monitoring;
+    assert(event < _PY_MONITORING_LOCAL_EVENTS);
+    _PyCoMonitoringData *data = _PyFrame_GetCode(frame)->_co_monitoring;
     if (data) {
-        if (data->active_monitors.tools[event] == 0) {
-            return 1;
-        }
+        return data->active_monitors.tools[event] == 0;
     }
     else {
-        if (tstate->interp->monitors.tools[event] == 0) {
-            return 1;
-        }
+        return no_tools_for_global_event(tstate, event);
     }
-    return 0;
 }
 
 static void
 monitor_raise(PyThreadState *tstate, _PyInterpreterFrame *frame,
               _Py_CODEUNIT *instr)
 {
-    if (no_tools_for_event(tstate, frame, PY_MONITORING_EVENT_RAISE)) {
+    if (no_tools_for_global_event(tstate, PY_MONITORING_EVENT_RAISE)) {
         return;
     }
     do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_RAISE);
 }
 
+static void
+monitor_reraise(PyThreadState *tstate, _PyInterpreterFrame *frame,
+              _Py_CODEUNIT *instr)
+{
+    if (no_tools_for_global_event(tstate, PY_MONITORING_EVENT_RERAISE)) {
+        return;
+    }
+    do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_RERAISE);
+}
+
 static int
 monitor_stop_iteration(PyThreadState *tstate, _PyInterpreterFrame *frame,
                        _Py_CODEUNIT *instr)
 {
-    if (no_tools_for_event(tstate, frame, PY_MONITORING_EVENT_STOP_ITERATION)) {
+    if (no_tools_for_local_event(tstate, frame, PY_MONITORING_EVENT_STOP_ITERATION)) {
         return 0;
     }
     return do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_STOP_ITERATION);
@@ -1998,22 +2190,22 @@ monitor_unwind(PyThreadState *tstate,
                _PyInterpreterFrame *frame,
                _Py_CODEUNIT *instr)
 {
-    if (no_tools_for_event(tstate, frame, PY_MONITORING_EVENT_PY_UNWIND)) {
+    if (no_tools_for_global_event(tstate, PY_MONITORING_EVENT_PY_UNWIND)) {
         return;
     }
-    _Py_call_instrumentation_exc0(tstate, PY_MONITORING_EVENT_PY_UNWIND, frame, instr);
+    do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_PY_UNWIND);
 }
 
 
-static void
+static int
 monitor_handled(PyThreadState *tstate,
                 _PyInterpreterFrame *frame,
                 _Py_CODEUNIT *instr, PyObject *exc)
 {
-    if (no_tools_for_event(tstate, frame, PY_MONITORING_EVENT_EXCEPTION_HANDLED)) {
-        return;
+    if (no_tools_for_global_event(tstate, PY_MONITORING_EVENT_EXCEPTION_HANDLED)) {
+        return 0;
     }
-    _Py_call_instrumentation_arg(tstate, PY_MONITORING_EVENT_EXCEPTION_HANDLED, frame, instr, exc);
+    return _Py_call_instrumentation_arg(tstate, PY_MONITORING_EVENT_EXCEPTION_HANDLED, frame, instr, exc);
 }
 
 static void
@@ -2021,10 +2213,10 @@ monitor_throw(PyThreadState *tstate,
               _PyInterpreterFrame *frame,
               _Py_CODEUNIT *instr)
 {
-    if (no_tools_for_event(tstate, frame, PY_MONITORING_EVENT_PY_THROW)) {
+    if (no_tools_for_global_event(tstate, PY_MONITORING_EVENT_PY_THROW)) {
         return;
     }
-    _Py_call_instrumentation_exc0(tstate, PY_MONITORING_EVENT_PY_THROW, frame, instr);
+    do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_PY_THROW);
 }
 
 void
@@ -2064,7 +2256,7 @@ PyEval_SetProfile(Py_tracefunc func, PyObject *arg)
     PyThreadState *tstate = _PyThreadState_GET();
     if (_PyEval_SetProfile(tstate, func, arg) < 0) {
         /* Log _PySys_Audit() error */
-        _PyErr_WriteUnraisableMsg("in PyEval_SetProfile", NULL);
+        PyErr_FormatUnraisable("Exception ignored in PyEval_SetProfile");
     }
 }
 
@@ -2081,7 +2273,7 @@ PyEval_SetProfileAllThreads(Py_tracefunc func, PyObject *arg)
 
     while (ts) {
         if (_PyEval_SetProfile(ts, func, arg) < 0) {
-            _PyErr_WriteUnraisableMsg("in PyEval_SetProfileAllThreads", NULL);
+            PyErr_FormatUnraisable("Exception ignored in PyEval_SetProfileAllThreads");
         }
         HEAD_LOCK(runtime);
         ts = PyThreadState_Next(ts);
@@ -2095,7 +2287,7 @@ PyEval_SetTrace(Py_tracefunc func, PyObject *arg)
     PyThreadState *tstate = _PyThreadState_GET();
     if (_PyEval_SetTrace(tstate, func, arg) < 0) {
         /* Log _PySys_Audit() error */
-        _PyErr_WriteUnraisableMsg("in PyEval_SetTrace", NULL);
+        PyErr_FormatUnraisable("Exception ignored in PyEval_SetTrace");
     }
 }
 
@@ -2112,7 +2304,7 @@ PyEval_SetTraceAllThreads(Py_tracefunc func, PyObject *arg)
 
     while (ts) {
         if (_PyEval_SetTrace(ts, func, arg) < 0) {
-            _PyErr_WriteUnraisableMsg("in PyEval_SetTraceAllThreads", NULL);
+            PyErr_FormatUnraisable("Exception ignored in PyEval_SetTraceAllThreads");
         }
         HEAD_LOCK(runtime);
         ts = PyThreadState_Next(ts);
@@ -2222,13 +2414,9 @@ PyEval_GetBuiltins(void)
 PyObject *
 _PyEval_GetBuiltin(PyObject *name)
 {
-    PyThreadState *tstate = _PyThreadState_GET();
-    PyObject *attr = PyDict_GetItemWithError(PyEval_GetBuiltins(), name);
-    if (attr) {
-        Py_INCREF(attr);
-    }
-    else if (!_PyErr_Occurred(tstate)) {
-        _PyErr_SetObject(tstate, PyExc_AttributeError, name);
+    PyObject *attr;
+    if (PyDict_GetItemRef(PyEval_GetBuiltins(), name, &attr) == 0) {
+        PyErr_SetObject(PyExc_AttributeError, name);
     }
     return attr;
 }
@@ -2258,6 +2446,19 @@ PyEval_GetLocals(void)
     return locals;
 }
 
+PyObject *
+_PyEval_GetFrameLocals(void)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+     _PyInterpreterFrame *current_frame = _PyThreadState_GetFrame(tstate);
+    if (current_frame == NULL) {
+        _PyErr_SetString(tstate, PyExc_SystemError, "frame does not exist");
+        return NULL;
+    }
+
+    return _PyFrame_GetLocals(current_frame, 1);
+}
+
 PyObject *
 PyEval_GetGlobals(void)
 {
@@ -2273,11 +2474,11 @@ int
 PyEval_MergeCompilerFlags(PyCompilerFlags *cf)
 {
     PyThreadState *tstate = _PyThreadState_GET();
-    _PyInterpreterFrame *current_frame = tstate->cframe->current_frame;
+    _PyInterpreterFrame *current_frame = tstate->current_frame;
     int result = cf->cf_flags != 0;
 
     if (current_frame != NULL) {
-        const int codeflags = current_frame->f_code->co_flags;
+        const int codeflags = _PyFrame_GetCode(current_frame)->co_flags;
         const int compilerflags = codeflags & PyCF_MASK;
         if (compilerflags) {
             result = 1;
@@ -2366,40 +2567,37 @@ static PyObject *
 import_name(PyThreadState *tstate, _PyInterpreterFrame *frame,
             PyObject *name, PyObject *fromlist, PyObject *level)
 {
-    PyObject *import_func, *res;
-    PyObject* stack[5];
-
-    import_func = _PyDict_GetItemWithError(frame->f_builtins, &_Py_ID(__import__));
+    PyObject *import_func;
+    if (PyDict_GetItemRef(frame->f_builtins, &_Py_ID(__import__), &import_func) < 0) {
+        return NULL;
+    }
     if (import_func == NULL) {
-        if (!_PyErr_Occurred(tstate)) {
-            _PyErr_SetString(tstate, PyExc_ImportError, "__import__ not found");
-        }
+        _PyErr_SetString(tstate, PyExc_ImportError, "__import__ not found");
         return NULL;
     }
+
     PyObject *locals = frame->f_locals;
+    if (locals == NULL) {
+        locals = Py_None;
+    }
+
     /* Fast path for not overloaded __import__. */
     if (_PyImport_IsDefaultImportFunc(tstate->interp, import_func)) {
-        int ilevel = _PyLong_AsInt(level);
+        Py_DECREF(import_func);
+        int ilevel = PyLong_AsInt(level);
         if (ilevel == -1 && _PyErr_Occurred(tstate)) {
             return NULL;
         }
-        res = PyImport_ImportModuleLevelObject(
+        return PyImport_ImportModuleLevelObject(
                         name,
                         frame->f_globals,
-                        locals == NULL ? Py_None :locals,
+                        locals,
                         fromlist,
                         ilevel);
-        return res;
     }
 
-    Py_INCREF(import_func);
-
-    stack[0] = name;
-    stack[1] = frame->f_globals;
-    stack[2] = locals == NULL ? Py_None : locals;
-    stack[3] = fromlist;
-    stack[4] = level;
-    res = _PyObject_FastCall(import_func, stack, 5);
+    PyObject* args[5] = {name, frame->f_globals, locals, fromlist, level};
+    PyObject *res = PyObject_Vectorcall(import_func, args, 5, NULL);
     Py_DECREF(import_func);
     return res;
 }
@@ -2410,17 +2608,16 @@ import_from(PyThreadState *tstate, PyObject *v, PyObject *name)
     PyObject *x;
     PyObject *fullmodname, *pkgname, *pkgpath, *pkgname_or_unknown, *errmsg;
 
-    if (_PyObject_LookupAttr(v, name, &x) != 0) {
+    if (PyObject_GetOptionalAttr(v, name, &x) != 0) {
         return x;
     }
     /* Issue #17636: in case this failed because of a circular relative
        import, try to fallback on reading the module directly from
        sys.modules. */
-    pkgname = PyObject_GetAttr(v, &_Py_ID(__name__));
-    if (pkgname == NULL) {
-        goto error;
+    if (PyObject_GetOptionalAttr(v, &_Py_ID(__name__), &pkgname) < 0) {
+        return NULL;
     }
-    if (!PyUnicode_Check(pkgname)) {
+    if (pkgname == NULL || !PyUnicode_Check(pkgname)) {
         Py_CLEAR(pkgname);
         goto error;
     }
@@ -2437,42 +2634,59 @@ import_from(PyThreadState *tstate, PyObject *v, PyObject *name)
     Py_DECREF(pkgname);
     return x;
  error:
-    pkgpath = PyModule_GetFilenameObject(v);
     if (pkgname == NULL) {
         pkgname_or_unknown = PyUnicode_FromString("<unknown module name>");
         if (pkgname_or_unknown == NULL) {
-            Py_XDECREF(pkgpath);
             return NULL;
         }
     } else {
         pkgname_or_unknown = pkgname;
     }
 
+    pkgpath = NULL;
+    if (PyModule_Check(v)) {
+        pkgpath = PyModule_GetFilenameObject(v);
+        if (pkgpath == NULL) {
+            if (!PyErr_ExceptionMatches(PyExc_SystemError)) {
+                Py_DECREF(pkgname_or_unknown);
+                return NULL;
+            }
+            // module filename missing
+            _PyErr_Clear(tstate);
+        }
+    }
     if (pkgpath == NULL || !PyUnicode_Check(pkgpath)) {
-        _PyErr_Clear(tstate);
+        Py_CLEAR(pkgpath);
         errmsg = PyUnicode_FromFormat(
             "cannot import name %R from %R (unknown location)",
             name, pkgname_or_unknown
         );
-        /* NULL checks for errmsg and pkgname done by PyErr_SetImportError. */
-        _PyErr_SetImportErrorWithNameFrom(errmsg, pkgname, NULL, name);
     }
     else {
-        PyObject *spec = PyObject_GetAttr(v, &_Py_ID(__spec__));
+        PyObject *spec;
+        int rc = PyObject_GetOptionalAttr(v, &_Py_ID(__spec__), &spec);
+        if (rc > 0) {
+            rc = _PyModuleSpec_IsInitializing(spec);
+            Py_DECREF(spec);
+        }
+        if (rc < 0) {
+            Py_DECREF(pkgname_or_unknown);
+            Py_DECREF(pkgpath);
+            return NULL;
+        }
         const char *fmt =
-            _PyModuleSpec_IsInitializing(spec) ?
+            rc ?
             "cannot import name %R from partially initialized module %R "
             "(most likely due to a circular import) (%S)" :
             "cannot import name %R from %R (%S)";
-        Py_XDECREF(spec);
 
         errmsg = PyUnicode_FromFormat(fmt, name, pkgname_or_unknown, pkgpath);
-        /* NULL checks for errmsg and pkgname done by PyErr_SetImportError. */
-        _PyErr_SetImportErrorWithNameFrom(errmsg, pkgname, pkgpath, name);
     }
+    /* NULL checks for errmsg and pkgname done by PyErr_SetImportError. */
+    _PyErr_SetImportErrorWithNameFrom(errmsg, pkgname, pkgpath, name);
 
     Py_XDECREF(errmsg);
-    Py_XDECREF(pkgname_or_unknown);
+    Py_DECREF(pkgname_or_unknown);
     Py_XDECREF(pkgpath);
     return NULL;
 }
@@ -2483,8 +2697,8 @@ import_from(PyThreadState *tstate, PyObject *v, PyObject *name)
 #define CANNOT_EXCEPT_STAR_EG "catching ExceptionGroup with except* "\
                               "is not allowed. Use except instead."
 
-static int
-check_except_type_valid(PyThreadState *tstate, PyObject* right)
+int
+_PyEval_CheckExceptTypeValid(PyThreadState *tstate, PyObject* right)
 {
     if (PyTuple_Check(right)) {
         Py_ssize_t i, length;
@@ -2508,10 +2722,10 @@ check_except_type_valid(PyThreadState *tstate, PyObject* right)
     return 0;
 }
 
-static int
-check_except_star_type_valid(PyThreadState *tstate, PyObject* right)
+int
+_PyEval_CheckExceptStarTypeValid(PyThreadState *tstate, PyObject* right)
 {
-    if (check_except_type_valid(tstate, right) < 0) {
+    if (_PyEval_CheckExceptTypeValid(tstate, right) < 0) {
         return -1;
     }
 
@@ -2565,8 +2779,8 @@ check_args_iterable(PyThreadState *tstate, PyObject *func, PyObject *args)
     return 0;
 }
 
-static void
-format_kwargs_error(PyThreadState *tstate, PyObject *func, PyObject *kwargs)
+void
+_PyEval_FormatKwargsError(PyThreadState *tstate, PyObject *func, PyObject *kwargs)
 {
     /* _PyDict_MergeEx raises attribute
      * error (percolated from an attempt
@@ -2607,9 +2821,9 @@ format_kwargs_error(PyThreadState *tstate, PyObject *func, PyObject *kwargs)
     }
 }
 
-static void
-format_exc_check_arg(PyThreadState *tstate, PyObject *exc,
-                     const char *format_str, PyObject *obj)
+void
+_PyEval_FormatExcCheckArg(PyThreadState *tstate, PyObject *exc,
+                          const char *format_str, PyObject *obj)
 {
     const char *obj_str;
 
@@ -2636,8 +2850,8 @@ format_exc_check_arg(PyThreadState *tstate, PyObject *exc,
     }
 }
 
-static void
-format_exc_unbound(PyThreadState *tstate, PyCodeObject *co, int oparg)
+void
+_PyEval_FormatExcUnbound(PyThreadState *tstate, PyCodeObject *co, int oparg)
 {
     PyObject *name;
     /* Don't stomp existing exception */
@@ -2645,16 +2859,16 @@ format_exc_unbound(PyThreadState *tstate, PyCodeObject *co, int oparg)
         return;
     name = PyTuple_GET_ITEM(co->co_localsplusnames, oparg);
     if (oparg < PyCode_GetFirstFree(co)) {
-        format_exc_check_arg(tstate, PyExc_UnboundLocalError,
-                             UNBOUNDLOCAL_ERROR_MSG, name);
+        _PyEval_FormatExcCheckArg(tstate, PyExc_UnboundLocalError,
+                                  UNBOUNDLOCAL_ERROR_MSG, name);
     } else {
-        format_exc_check_arg(tstate, PyExc_NameError,
-                             UNBOUNDFREE_ERROR_MSG, name);
+        _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                  UNBOUNDFREE_ERROR_MSG, name);
     }
 }
 
-static void
-format_awaitable_error(PyThreadState *tstate, PyTypeObject *type, int oparg)
+void
+_PyEval_FormatAwaitableError(PyThreadState *tstate, PyTypeObject *type, int oparg)
 {
     if (type->tp_as_async == NULL || type->tp_as_async->am_await == NULL) {
         if (oparg == 1) {
diff --git a/Python/ceval_gil.c b/Python/ceval_gil.c
index 42e1436bc9130d..636e4db898f2d9 100644
--- a/Python/ceval_gil.c
+++ b/Python/ceval_gil.c
@@ -1,12 +1,12 @@
 
 #include "Python.h"
-#include "pycore_atomic.h"        // _Py_atomic_int
 #include "pycore_ceval.h"         // _PyEval_SignalReceived()
-#include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
-#include "pycore_pylifecycle.h"   // _PyErr_Print()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_interp.h"        // _Py_RunGC()
+#include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
+#include "pycore_pylifecycle.h"   // _PyErr_Print()
 #include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
+#include "pycore_pystats.h"       // _Py_PrintSpecializationStats()
 
 /*
    Notes about the implementation:
@@ -56,119 +56,62 @@
 #define _Py_atomic_load_relaxed_int32(ATOMIC_VAL) _Py_atomic_load_relaxed(ATOMIC_VAL)
 #endif
 
-/* This can set eval_breaker to 0 even though gil_drop_request became
-   1.  We believe this is all right because the eval loop will release
-   the GIL eventually anyway. */
+/* bpo-40010: eval_breaker should be recomputed if there
+   is a pending signal: signal received by another thread which cannot
+   handle signals.
+   Similarly, we set CALLS_TO_DO and ASYNC_EXCEPTION to match the thread.
+*/
 static inline void
-COMPUTE_EVAL_BREAKER(PyInterpreterState *interp,
-                     struct _ceval_runtime_state *ceval,
-                     struct _ceval_state *ceval2)
+update_eval_breaker_from_thread(PyInterpreterState *interp, PyThreadState *tstate)
 {
-    _Py_atomic_store_relaxed(&ceval2->eval_breaker,
-        _Py_atomic_load_relaxed_int32(&ceval2->gil_drop_request)
-        | (_Py_atomic_load_relaxed_int32(&ceval->signals_pending)
-           && _Py_ThreadCanHandleSignals(interp))
-        | (_Py_atomic_load_relaxed_int32(&ceval2->pending.calls_to_do)
-           && _Py_ThreadCanHandlePendingCalls())
-        | ceval2->pending.async_exc
-        | _Py_atomic_load_relaxed_int32(&ceval2->gc_scheduled));
-}
+    if (tstate == NULL) {
+        return;
+    }
 
+    if (_Py_IsMainThread()) {
+        int32_t calls_to_do = _Py_atomic_load_int32_relaxed(
+            &_PyRuntime.ceval.pending_mainthread.calls_to_do);
+        if (calls_to_do) {
+            _Py_set_eval_breaker_bit(interp, _PY_CALLS_TO_DO_BIT, 1);
+        }
+        if (_Py_ThreadCanHandleSignals(interp)) {
+            if (_Py_atomic_load_int(&_PyRuntime.signals.is_tripped)) {
+                _Py_set_eval_breaker_bit(interp, _PY_SIGNALS_PENDING_BIT, 1);
+            }
+        }
+    }
+    if (tstate->async_exc != NULL) {
+        _Py_set_eval_breaker_bit(interp, _PY_ASYNC_EXCEPTION_BIT, 1);
+    }
+}
 
 static inline void
 SET_GIL_DROP_REQUEST(PyInterpreterState *interp)
 {
-    struct _ceval_state *ceval2 = &interp->ceval;
-    _Py_atomic_store_relaxed(&ceval2->gil_drop_request, 1);
-    _Py_atomic_store_relaxed(&ceval2->eval_breaker, 1);
+    _Py_set_eval_breaker_bit(interp, _PY_GIL_DROP_REQUEST_BIT, 1);
 }
 
 
 static inline void
 RESET_GIL_DROP_REQUEST(PyInterpreterState *interp)
 {
-    struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
-    struct _ceval_state *ceval2 = &interp->ceval;
-    _Py_atomic_store_relaxed(&ceval2->gil_drop_request, 0);
-    COMPUTE_EVAL_BREAKER(interp, ceval, ceval2);
+    _Py_set_eval_breaker_bit(interp, _PY_GIL_DROP_REQUEST_BIT, 0);
 }
 
 
 static inline void
 SIGNAL_PENDING_CALLS(PyInterpreterState *interp)
 {
-    struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
-    struct _ceval_state *ceval2 = &interp->ceval;
-    _Py_atomic_store_relaxed(&ceval2->pending.calls_to_do, 1);
-    COMPUTE_EVAL_BREAKER(interp, ceval, ceval2);
+    _Py_set_eval_breaker_bit(interp, _PY_CALLS_TO_DO_BIT, 1);
 }
 
 
 static inline void
 UNSIGNAL_PENDING_CALLS(PyInterpreterState *interp)
 {
-    struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
-    struct _ceval_state *ceval2 = &interp->ceval;
-    _Py_atomic_store_relaxed(&ceval2->pending.calls_to_do, 0);
-    COMPUTE_EVAL_BREAKER(interp, ceval, ceval2);
-}
-
-
-static inline void
-SIGNAL_PENDING_SIGNALS(PyInterpreterState *interp, int force)
-{
-    struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
-    struct _ceval_state *ceval2 = &interp->ceval;
-    _Py_atomic_store_relaxed(&ceval->signals_pending, 1);
-    if (force) {
-        _Py_atomic_store_relaxed(&ceval2->eval_breaker, 1);
-    }
-    else {
-        /* eval_breaker is not set to 1 if thread_can_handle_signals() is false */
-        COMPUTE_EVAL_BREAKER(interp, ceval, ceval2);
-    }
+    _Py_set_eval_breaker_bit(interp, _PY_CALLS_TO_DO_BIT, 0);
 }
 
-
-static inline void
-UNSIGNAL_PENDING_SIGNALS(PyInterpreterState *interp)
-{
-    struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
-    struct _ceval_state *ceval2 = &interp->ceval;
-    _Py_atomic_store_relaxed(&ceval->signals_pending, 0);
-    COMPUTE_EVAL_BREAKER(interp, ceval, ceval2);
-}
-
-
-static inline void
-SIGNAL_ASYNC_EXC(PyInterpreterState *interp)
-{
-    struct _ceval_state *ceval2 = &interp->ceval;
-    ceval2->pending.async_exc = 1;
-    _Py_atomic_store_relaxed(&ceval2->eval_breaker, 1);
-}
-
-
-static inline void
-UNSIGNAL_ASYNC_EXC(PyInterpreterState *interp)
-{
-    struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
-    struct _ceval_state *ceval2 = &interp->ceval;
-    ceval2->pending.async_exc = 0;
-    COMPUTE_EVAL_BREAKER(interp, ceval, ceval2);
-}
-
-#ifndef NDEBUG
-/* Ensure that tstate is valid */
-static int
-is_tstate_valid(PyThreadState *tstate)
-{
-    assert(!_PyMem_IsPtrFreed(tstate));
-    assert(!_PyMem_IsPtrFreed(tstate->interp));
-    return 1;
-}
-#endif
-
 /*
  * Implementation of the Global Interpreter Lock (GIL).
  */
@@ -176,9 +119,6 @@ is_tstate_valid(PyThreadState *tstate)
 #include <stdlib.h>
 #include <errno.h>
 
-#include "pycore_atomic.h"
-
-
 #include "condvar.h"
 
 #define MUTEX_INIT(mut) \
@@ -222,8 +162,7 @@ is_tstate_valid(PyThreadState *tstate)
 
 static void _gil_initialize(struct _gil_runtime_state *gil)
 {
-    _Py_atomic_int uninitialized = {-1};
-    gil->locked = uninitialized;
+    gil->locked = -1;
     gil->interval = DEFAULT_INTERVAL;
 }
 
@@ -232,7 +171,7 @@ static int gil_created(struct _gil_runtime_state *gil)
     if (gil == NULL) {
         return 0;
     }
-    return (_Py_atomic_load_explicit(&gil->locked, _Py_memory_order_acquire) >= 0);
+    return (_Py_atomic_load_int_acquire(&gil->locked) >= 0);
 }
 
 static void create_gil(struct _gil_runtime_state *gil)
@@ -245,9 +184,9 @@ static void create_gil(struct _gil_runtime_state *gil)
 #ifdef FORCE_SWITCHING
     COND_INIT(gil->switch_cond);
 #endif
-    _Py_atomic_store_relaxed(&gil->last_holder, 0);
+    _Py_atomic_store_ptr_relaxed(&gil->last_holder, 0);
     _Py_ANNOTATE_RWLOCK_CREATE(&gil->locked);
-    _Py_atomic_store_explicit(&gil->locked, 0, _Py_memory_order_release);
+    _Py_atomic_store_int_release(&gil->locked, 0);
 }
 
 static void destroy_gil(struct _gil_runtime_state *gil)
@@ -261,8 +200,7 @@ static void destroy_gil(struct _gil_runtime_state *gil)
     COND_FINI(gil->switch_cond);
     MUTEX_FINI(gil->switch_mutex);
 #endif
-    _Py_atomic_store_explicit(&gil->locked, -1,
-                              _Py_memory_order_release);
+    _Py_atomic_store_int_release(&gil->locked, -1);
     _Py_ANNOTATE_RWLOCK_DESTROY(&gil->locked);
 }
 
@@ -276,10 +214,20 @@ static void recreate_gil(struct _gil_runtime_state *gil)
 #endif
 
 static void
-drop_gil(struct _ceval_state *ceval, PyThreadState *tstate)
+drop_gil(PyInterpreterState *interp, PyThreadState *tstate)
 {
+    struct _ceval_state *ceval = &interp->ceval;
+    /* If tstate is NULL, the caller is indicating that we're releasing
+       the GIL for the last time in this thread.  This is particularly
+       relevant when the current thread state is finalizing or its
+       interpreter is finalizing (either may be in an inconsistent
+       state).  In that case the current thread will definitely
+       never try to acquire the GIL again. */
+    // XXX It may be more correct to check tstate->_status.finalizing.
+    // XXX assert(tstate == NULL || !tstate->_status.cleared);
+
     struct _gil_runtime_state *gil = ceval->gil;
-    if (!_Py_atomic_load_relaxed(&gil->locked)) {
+    if (!_Py_atomic_load_ptr_relaxed(&gil->locked)) {
         Py_FatalError("drop_gil: GIL is not locked");
     }
 
@@ -288,22 +236,30 @@ drop_gil(struct _ceval_state *ceval, PyThreadState *tstate)
         /* Sub-interpreter support: threads might have been switched
            under our feet using PyThreadState_Swap(). Fix the GIL last
            holder variable so that our heuristics work. */
-        _Py_atomic_store_relaxed(&gil->last_holder, (uintptr_t)tstate);
+        _Py_atomic_store_ptr_relaxed(&gil->last_holder, tstate);
     }
 
     MUTEX_LOCK(gil->mutex);
     _Py_ANNOTATE_RWLOCK_RELEASED(&gil->locked, /*is_write=*/1);
-    _Py_atomic_store_relaxed(&gil->locked, 0);
+    _Py_atomic_store_int_relaxed(&gil->locked, 0);
     COND_SIGNAL(gil->cond);
     MUTEX_UNLOCK(gil->mutex);
 
 #ifdef FORCE_SWITCHING
-    if (_Py_atomic_load_relaxed(&ceval->gil_drop_request) && tstate != NULL) {
+    /* We check tstate first in case we might be releasing the GIL for
+       the last time in this thread.  In that case there's a possible
+       race with tstate->interp getting deleted after gil->mutex is
+       unlocked and before the following code runs, leading to a crash.
+       We can use (tstate == NULL) to indicate the thread is done with
+       the GIL, and that's the only time we might delete the
+       interpreter, so checking tstate first prevents the crash.
+       See https://github.com/python/cpython/issues/104341. */
+    if (tstate != NULL && _Py_eval_breaker_bit_is_set(interp, _PY_GIL_DROP_REQUEST_BIT)) {
         MUTEX_LOCK(gil->switch_mutex);
         /* Not switched yet => wait */
-        if (((PyThreadState*)_Py_atomic_load_relaxed(&gil->last_holder)) == tstate)
+        if (((PyThreadState*)_Py_atomic_load_ptr_relaxed(&gil->last_holder)) == tstate)
         {
-            assert(is_tstate_valid(tstate));
+            assert(_PyThreadState_CheckConsistency(tstate));
             RESET_GIL_DROP_REQUEST(tstate->interp);
             /* NOTE: if COND_WAIT does not atomically start waiting when
                releasing the mutex, another thread can run through, take
@@ -317,25 +273,6 @@ drop_gil(struct _ceval_state *ceval, PyThreadState *tstate)
 }
 
 
-/* Check if a Python thread must exit immediately, rather than taking the GIL
-   if Py_Finalize() has been called.
-
-   When this function is called by a daemon thread after Py_Finalize() has been
-   called, the GIL does no longer exist.
-
-   tstate must be non-NULL. */
-static inline int
-tstate_must_exit(PyThreadState *tstate)
-{
-    /* bpo-39877: Access _PyRuntime directly rather than using
-       tstate->interp->runtime to support calls from Python daemon threads.
-       After Py_Finalize() has been called, tstate can be a dangling pointer:
-       point to PyThreadState freed memory. */
-    PyThreadState *finalizing = _PyRuntimeState_GetFinalizing(&_PyRuntime);
-    return (finalizing != NULL && finalizing != tstate);
-}
-
-
 /* Take the GIL.
 
    The function saves errno at entry and restores its value at exit.
@@ -347,8 +284,11 @@ take_gil(PyThreadState *tstate)
     int err = errno;
 
     assert(tstate != NULL);
+    /* We shouldn't be using a thread state that isn't viable any more. */
+    // XXX It may be more correct to check tstate->_status.finalizing.
+    // XXX assert(!tstate->_status.cleared);
 
-    if (tstate_must_exit(tstate)) {
+    if (_PyThreadState_MustExit(tstate)) {
         /* bpo-39877: If Py_Finalize() has been called and tstate is not the
            thread which called Py_Finalize(), exit immediately the thread.
 
@@ -358,22 +298,21 @@ take_gil(PyThreadState *tstate)
         PyThread_exit_thread();
     }
 
-    assert(is_tstate_valid(tstate));
+    assert(_PyThreadState_CheckConsistency(tstate));
     PyInterpreterState *interp = tstate->interp;
-    struct _ceval_state *ceval = &interp->ceval;
-    struct _gil_runtime_state *gil = ceval->gil;
+    struct _gil_runtime_state *gil = interp->ceval.gil;
 
     /* Check that _PyEval_InitThreads() was called to create the lock */
     assert(gil_created(gil));
 
     MUTEX_LOCK(gil->mutex);
 
-    if (!_Py_atomic_load_relaxed(&gil->locked)) {
+    if (!_Py_atomic_load_int_relaxed(&gil->locked)) {
         goto _ready;
     }
 
     int drop_requested = 0;
-    while (_Py_atomic_load_relaxed(&gil->locked)) {
+    while (_Py_atomic_load_int_relaxed(&gil->locked)) {
         unsigned long saved_switchnum = gil->switch_number;
 
         unsigned long interval = (gil->interval >= 1 ? gil->interval : 1);
@@ -383,10 +322,10 @@ take_gil(PyThreadState *tstate)
         /* If we timed out and no switch occurred in the meantime, it is time
            to ask the GIL-holding thread to drop it. */
         if (timed_out &&
-            _Py_atomic_load_relaxed(&gil->locked) &&
+            _Py_atomic_load_int_relaxed(&gil->locked) &&
             gil->switch_number == saved_switchnum)
         {
-            if (tstate_must_exit(tstate)) {
+            if (_PyThreadState_MustExit(tstate)) {
                 MUTEX_UNLOCK(gil->mutex);
                 // gh-96387: If the loop requested a drop request in a previous
                 // iteration, reset the request. Otherwise, drop_gil() can
@@ -399,7 +338,7 @@ take_gil(PyThreadState *tstate)
                 }
                 PyThread_exit_thread();
             }
-            assert(is_tstate_valid(tstate));
+            assert(_PyThreadState_CheckConsistency(tstate));
 
             SET_GIL_DROP_REQUEST(interp);
             drop_requested = 1;
@@ -413,11 +352,11 @@ take_gil(PyThreadState *tstate)
     MUTEX_LOCK(gil->switch_mutex);
 #endif
     /* We now hold the GIL */
-    _Py_atomic_store_relaxed(&gil->locked, 1);
+    _Py_atomic_store_int_relaxed(&gil->locked, 1);
     _Py_ANNOTATE_RWLOCK_ACQUIRED(&gil->locked, /*is_write=*/1);
 
-    if (tstate != (PyThreadState*)_Py_atomic_load_relaxed(&gil->last_holder)) {
-        _Py_atomic_store_relaxed(&gil->last_holder, (uintptr_t)tstate);
+    if (tstate != (PyThreadState*)_Py_atomic_load_ptr_relaxed(&gil->last_holder)) {
+        _Py_atomic_store_ptr_relaxed(&gil->last_holder, tstate);
         ++gil->switch_number;
     }
 
@@ -426,7 +365,7 @@ take_gil(PyThreadState *tstate)
     MUTEX_UNLOCK(gil->switch_mutex);
 #endif
 
-    if (tstate_must_exit(tstate)) {
+    if (_PyThreadState_MustExit(tstate)) {
         /* bpo-36475: If Py_Finalize() has been called and tstate is not
            the thread which called Py_Finalize(), exit immediately the
            thread.
@@ -435,27 +374,13 @@ take_gil(PyThreadState *tstate)
            in take_gil() while the main thread called
            wait_for_thread_shutdown() from Py_Finalize(). */
         MUTEX_UNLOCK(gil->mutex);
-        drop_gil(ceval, tstate);
+        drop_gil(interp, tstate);
         PyThread_exit_thread();
     }
-    assert(is_tstate_valid(tstate));
-
-    if (_Py_atomic_load_relaxed(&ceval->gil_drop_request)) {
-        RESET_GIL_DROP_REQUEST(interp);
-    }
-    else {
-        /* bpo-40010: eval_breaker should be recomputed to be set to 1 if there
-           is a pending signal: signal received by another thread which cannot
-           handle signals.
-
-           Note: RESET_GIL_DROP_REQUEST() calls COMPUTE_EVAL_BREAKER(). */
-        COMPUTE_EVAL_BREAKER(interp, &_PyRuntime.ceval, ceval);
-    }
+    assert(_PyThreadState_CheckConsistency(tstate));
 
-    /* Don't access tstate if the thread must exit */
-    if (tstate->async_exc != NULL) {
-        _PyEval_SignalAsyncExc(tstate->interp);
-    }
+    RESET_GIL_DROP_REQUEST(interp);
+    update_eval_breaker_from_thread(interp, tstate);
 
     MUTEX_UNLOCK(gil->mutex);
 
@@ -464,7 +389,7 @@ take_gil(PyThreadState *tstate)
 
 void _PyEval_SetSwitchInterval(unsigned long microseconds)
 {
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     struct _gil_runtime_state *gil = interp->ceval.gil;
     assert(gil != NULL);
     gil->interval = microseconds;
@@ -472,7 +397,7 @@ void _PyEval_SetSwitchInterval(unsigned long microseconds)
 
 unsigned long _PyEval_GetSwitchInterval(void)
 {
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     struct _gil_runtime_state *gil = interp->ceval.gil;
     assert(gil != NULL);
     return gil->interval;
@@ -493,7 +418,8 @@ _PyEval_ThreadsInitialized(void)
     return gil_created(gil);
 }
 
-int
+// Function removed in the Python 3.13 API but kept in the stable ABI.
+PyAPI_FUNC(int)
 PyEval_ThreadsInitialized(void)
 {
     return _PyEval_ThreadsInitialized();
@@ -502,10 +428,10 @@ PyEval_ThreadsInitialized(void)
 static inline int
 current_thread_holds_gil(struct _gil_runtime_state *gil, PyThreadState *tstate)
 {
-    if (((PyThreadState*)_Py_atomic_load_relaxed(&gil->last_holder)) != tstate) {
+    if (((PyThreadState*)_Py_atomic_load_ptr_relaxed(&gil->last_holder)) != tstate) {
         return 0;
     }
-    return _Py_atomic_load_relaxed(&gil->locked);
+    return _Py_atomic_load_int_relaxed(&gil->locked);
 }
 
 static void
@@ -530,24 +456,22 @@ PyStatus
 _PyEval_InitGIL(PyThreadState *tstate, int own_gil)
 {
     assert(tstate->interp->ceval.gil == NULL);
-    int locked;
     if (!own_gil) {
         /* The interpreter will share the main interpreter's instead. */
         PyInterpreterState *main_interp = _PyInterpreterState_Main();
         assert(tstate->interp != main_interp);
         struct _gil_runtime_state *gil = main_interp->ceval.gil;
         init_shared_gil(tstate->interp, gil);
-        locked = current_thread_holds_gil(gil, tstate);
+        assert(!current_thread_holds_gil(gil, tstate));
     }
     else {
         PyThread_init_thread();
         init_own_gil(tstate->interp, &tstate->interp->_gil);
-        locked = 0;
-    }
-    if (!locked) {
-        take_gil(tstate);
     }
 
+    // Lock the GIL and mark the current thread as attached.
+    _PyThreadState_Attach(tstate);
+
     return _PyStatus_OK();
 }
 
@@ -581,7 +505,8 @@ _PyEval_FiniGIL(PyInterpreterState *interp)
     interp->ceval.gil = NULL;
 }
 
-void
+// Function removed in the Python 3.13 API but kept in the stable ABI.
+PyAPI_FUNC(void)
 PyEval_InitThreads(void)
 {
     /* Do nothing: kept for backward compatibility */
@@ -594,7 +519,9 @@ _PyEval_Fini(void)
     _Py_PrintSpecializationStats(1);
 #endif
 }
-void
+
+// Function removed in the Python 3.13 API but kept in the stable ABI.
+PyAPI_FUNC(void)
 PyEval_AcquireLock(void)
 {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -603,15 +530,15 @@ PyEval_AcquireLock(void)
     take_gil(tstate);
 }
 
-void
+// Function removed in the Python 3.13 API but kept in the stable ABI.
+PyAPI_FUNC(void)
 PyEval_ReleaseLock(void)
 {
     PyThreadState *tstate = _PyThreadState_GET();
     /* This function must succeed when the current thread state is NULL.
        We therefore avoid PyThreadState_Get() which dumps a fatal error
        in debug mode. */
-    struct _ceval_state *ceval = &tstate->interp->ceval;
-    drop_gil(ceval, tstate);
+    drop_gil(tstate->interp, tstate);
 }
 
 void
@@ -622,36 +549,26 @@ _PyEval_AcquireLock(PyThreadState *tstate)
 }
 
 void
-_PyEval_ReleaseLock(PyThreadState *tstate)
+_PyEval_ReleaseLock(PyInterpreterState *interp, PyThreadState *tstate)
 {
-    _Py_EnsureTstateNotNULL(tstate);
-    struct _ceval_state *ceval = &tstate->interp->ceval;
-    drop_gil(ceval, tstate);
+    /* If tstate is NULL then we do not expect the current thread
+       to acquire the GIL ever again. */
+    assert(tstate == NULL || tstate->interp == interp);
+    drop_gil(interp, tstate);
 }
 
 void
 PyEval_AcquireThread(PyThreadState *tstate)
 {
     _Py_EnsureTstateNotNULL(tstate);
-
-    take_gil(tstate);
-
-    if (_PyThreadState_SwapNoGIL(tstate) != NULL) {
-        Py_FatalError("non-NULL old thread state");
-    }
+    _PyThreadState_Attach(tstate);
 }
 
 void
 PyEval_ReleaseThread(PyThreadState *tstate)
 {
-    assert(is_tstate_valid(tstate));
-
-    PyThreadState *new_tstate = _PyThreadState_SwapNoGIL(NULL);
-    if (new_tstate != tstate) {
-        Py_FatalError("wrong thread state");
-    }
-    struct _ceval_state *ceval = &tstate->interp->ceval;
-    drop_gil(ceval, tstate);
+    assert(_PyThreadState_CheckConsistency(tstate));
+    _PyThreadState_Detach(tstate);
 }
 
 #ifdef HAVE_FORK
@@ -672,9 +589,7 @@ _PyEval_ReInitThreads(PyThreadState *tstate)
     take_gil(tstate);
 
     struct _pending_calls *pending = &tstate->interp->ceval.pending;
-    if (_PyThread_at_fork_reinit(&pending->lock) < 0) {
-        return _PyStatus_ERR("Can't reinitialize pending calls lock");
-    }
+    _PyMutex_at_fork_reinit(&pending->mutex);
 
     /* Destroy all threads except the current one */
     _PyThreadState_DeleteExcept(tstate);
@@ -688,18 +603,14 @@ _PyEval_ReInitThreads(PyThreadState *tstate)
 void
 _PyEval_SignalAsyncExc(PyInterpreterState *interp)
 {
-    SIGNAL_ASYNC_EXC(interp);
+    _Py_set_eval_breaker_bit(interp, _PY_ASYNC_EXCEPTION_BIT, 1);
 }
 
 PyThreadState *
 PyEval_SaveThread(void)
 {
-    PyThreadState *tstate = _PyThreadState_SwapNoGIL(NULL);
-    _Py_EnsureTstateNotNULL(tstate);
-
-    struct _ceval_state *ceval = &tstate->interp->ceval;
-    assert(gil_created(ceval->gil));
-    drop_gil(ceval, tstate);
+    PyThreadState *tstate = _PyThreadState_GET();
+    _PyThreadState_Detach(tstate);
     return tstate;
 }
 
@@ -707,10 +618,7 @@ void
 PyEval_RestoreThread(PyThreadState *tstate)
 {
     _Py_EnsureTstateNotNULL(tstate);
-
-    take_gil(tstate);
-
-    _PyThreadState_SwapNoGIL(tstate);
+    _PyThreadState_Attach(tstate);
 }
 
 
@@ -739,28 +647,15 @@ PyEval_RestoreThread(PyThreadState *tstate)
 void
 _PyEval_SignalReceived(PyInterpreterState *interp)
 {
-#ifdef MS_WINDOWS
-    // bpo-42296: On Windows, _PyEval_SignalReceived() is called from a signal
-    // handler which can run in a thread different than the Python thread, in
-    // which case _Py_ThreadCanHandleSignals() is wrong. Ignore
-    // _Py_ThreadCanHandleSignals() and always set eval_breaker to 1.
-    //
-    // The next eval_frame_handle_pending() call will call
-    // _Py_ThreadCanHandleSignals() to recompute eval_breaker.
-    int force = 1;
-#else
-    int force = 0;
-#endif
-    /* bpo-30703: Function called when the C signal handler of Python gets a
-       signal. We cannot queue a callback using _PyEval_AddPendingCall() since
-       that function is not async-signal-safe. */
-    SIGNAL_PENDING_SIGNALS(interp, force);
+    if (_Py_ThreadCanHandleSignals(interp)) {
+        _Py_set_eval_breaker_bit(interp, _PY_SIGNALS_PENDING_BIT, 1);
+    }
 }
 
 /* Push one item onto the queue while holding the lock. */
 static int
 _push_pending_call(struct _pending_calls *pending,
-                   int (*func)(void *), void *arg)
+                   _Py_pending_call_func func, void *arg, int flags)
 {
     int i = pending->last;
     int j = (i + 1) % NPENDINGCALLS;
@@ -769,23 +664,41 @@ _push_pending_call(struct _pending_calls *pending,
     }
     pending->calls[i].func = func;
     pending->calls[i].arg = arg;
+    pending->calls[i].flags = flags;
     pending->last = j;
+    assert(pending->calls_to_do < NPENDINGCALLS);
+    pending->calls_to_do++;
     return 0;
 }
 
-/* Pop one item off the queue while holding the lock. */
-static void
-_pop_pending_call(struct _pending_calls *pending,
-                  int (**func)(void *), void **arg)
+static int
+_next_pending_call(struct _pending_calls *pending,
+                   int (**func)(void *), void **arg, int *flags)
 {
     int i = pending->first;
     if (i == pending->last) {
-        return; /* Queue empty */
+        /* Queue empty */
+        assert(pending->calls[i].func == NULL);
+        return -1;
     }
-
     *func = pending->calls[i].func;
     *arg = pending->calls[i].arg;
-    pending->first = (i + 1) % NPENDINGCALLS;
+    *flags = pending->calls[i].flags;
+    return i;
+}
+
+/* Pop one item off the queue while holding the lock. */
+static void
+_pop_pending_call(struct _pending_calls *pending,
+                  int (**func)(void *), void **arg, int *flags)
+{
+    int i = _next_pending_call(pending, func, arg, flags);
+    if (i >= 0) {
+        pending->calls[i] = (struct _pending_call){0};
+        pending->first = (i + 1) % NPENDINGCALLS;
+        assert(pending->calls_to_do > 0);
+        pending->calls_to_do--;
+    }
 }
 
 /* This implementation is thread-safe.  It allows
@@ -795,16 +708,20 @@ _pop_pending_call(struct _pending_calls *pending,
 
 int
 _PyEval_AddPendingCall(PyInterpreterState *interp,
-                       int (*func)(void *), void *arg)
+                       _Py_pending_call_func func, void *arg, int flags)
 {
+    assert(!(flags & _Py_PENDING_MAINTHREADONLY)
+           || _Py_IsMainInterpreter(interp));
     struct _pending_calls *pending = &interp->ceval.pending;
-    /* Ensure that _PyEval_InitState() was called
-       and that _PyEval_FiniState() is not called yet. */
-    assert(pending->lock != NULL);
+    if (flags & _Py_PENDING_MAINTHREADONLY) {
+        /* The main thread only exists in the main interpreter. */
+        assert(_Py_IsMainInterpreter(interp));
+        pending = &_PyRuntime.ceval.pending_mainthread;
+    }
 
-    PyThread_acquire_lock(pending->lock, WAIT_LOCK);
-    int result = _push_pending_call(pending, func, arg);
-    PyThread_release_lock(pending->lock);
+    PyMutex_Lock(&pending->mutex);
+    int result = _push_pending_call(pending, func, arg, flags);
+    PyMutex_Unlock(&pending->mutex);
 
     /* signal main loop */
     SIGNAL_PENDING_CALLS(interp);
@@ -812,113 +729,114 @@ _PyEval_AddPendingCall(PyInterpreterState *interp,
 }
 
 int
-Py_AddPendingCall(int (*func)(void *), void *arg)
+Py_AddPendingCall(_Py_pending_call_func func, void *arg)
 {
-    /* Best-effort to support subinterpreters and calls with the GIL released.
-
-       First attempt _PyThreadState_GET() since it supports subinterpreters.
-
-       If the GIL is released, _PyThreadState_GET() returns NULL . In this
-       case, use PyGILState_GetThisThreadState() which works even if the GIL
-       is released.
-
-       Sadly, PyGILState_GetThisThreadState() doesn't support subinterpreters:
-       see bpo-10915 and bpo-15751.
-
-       Py_AddPendingCall() doesn't require the caller to hold the GIL. */
-    PyThreadState *tstate = _PyThreadState_GET();
-    if (tstate == NULL) {
-        tstate = PyGILState_GetThisThreadState();
-    }
-
-    PyInterpreterState *interp;
-    if (tstate != NULL) {
-        interp = tstate->interp;
-    }
-    else {
-        /* Last resort: use the main interpreter */
-        interp = _PyInterpreterState_Main();
-    }
-    return _PyEval_AddPendingCall(interp, func, arg);
+    /* Legacy users of this API will continue to target the main thread
+       (of the main interpreter). */
+    PyInterpreterState *interp = _PyInterpreterState_Main();
+    return _PyEval_AddPendingCall(interp, func, arg, _Py_PENDING_MAINTHREADONLY);
 }
 
 static int
 handle_signals(PyThreadState *tstate)
 {
-    assert(is_tstate_valid(tstate));
+    assert(_PyThreadState_CheckConsistency(tstate));
+    _Py_set_eval_breaker_bit(tstate->interp, _PY_SIGNALS_PENDING_BIT, 0);
     if (!_Py_ThreadCanHandleSignals(tstate->interp)) {
         return 0;
     }
-
-    UNSIGNAL_PENDING_SIGNALS(tstate->interp);
     if (_PyErr_CheckSignalsTstate(tstate) < 0) {
         /* On failure, re-schedule a call to handle_signals(). */
-        SIGNAL_PENDING_SIGNALS(tstate->interp, 0);
+        _Py_set_eval_breaker_bit(tstate->interp, _PY_SIGNALS_PENDING_BIT, 1);
         return -1;
     }
     return 0;
 }
 
 static int
-make_pending_calls(PyInterpreterState *interp)
+_make_pending_calls(struct _pending_calls *pending)
 {
-    /* only execute pending calls on main thread */
-    if (!_Py_ThreadCanHandlePendingCalls()) {
-        return 0;
-    }
-
-    /* don't perform recursive pending calls */
-    if (interp->ceval.pending.busy) {
-        return 0;
-    }
-    interp->ceval.pending.busy = 1;
-
-    /* unsignal before starting to call callbacks, so that any callback
-       added in-between re-signals */
-    UNSIGNAL_PENDING_CALLS(interp);
-    int res = 0;
-
     /* perform a bounded number of calls, in case of recursion */
-    struct _pending_calls *pending = &interp->ceval.pending;
     for (int i=0; i<NPENDINGCALLS; i++) {
-        int (*func)(void *) = NULL;
+        _Py_pending_call_func func = NULL;
         void *arg = NULL;
+        int flags = 0;
 
         /* pop one item off the queue while holding the lock */
-        PyThread_acquire_lock(pending->lock, WAIT_LOCK);
-        _pop_pending_call(pending, &func, &arg);
-        PyThread_release_lock(pending->lock);
+        PyMutex_Lock(&pending->mutex);
+        _pop_pending_call(pending, &func, &arg, &flags);
+        PyMutex_Unlock(&pending->mutex);
 
         /* having released the lock, perform the callback */
         if (func == NULL) {
             break;
         }
-        res = func(arg);
-        if (res) {
-            goto error;
+        int res = func(arg);
+        if ((flags & _Py_PENDING_RAWFREE) && arg != NULL) {
+            PyMem_RawFree(arg);
+        }
+        if (res != 0) {
+            return -1;
         }
     }
+    return 0;
+}
+
+static int
+make_pending_calls(PyInterpreterState *interp)
+{
+    struct _pending_calls *pending = &interp->ceval.pending;
+    struct _pending_calls *pending_main = &_PyRuntime.ceval.pending_mainthread;
+
+    /* Only one thread (per interpreter) may run the pending calls
+       at once.  In the same way, we don't do recursive pending calls. */
+    PyMutex_Lock(&pending->mutex);
+    if (pending->busy) {
+        /* A pending call was added after another thread was already
+           handling the pending calls (and had already "unsignaled").
+           Once that thread is done, it may have taken care of all the
+           pending calls, or there might be some still waiting.
+           Regardless, this interpreter's pending calls will stay
+           "signaled" until that first thread has finished.  At that
+           point the next thread to trip the eval breaker will take
+           care of any remaining pending calls.  Until then, though,
+           all the interpreter's threads will be tripping the eval
+           breaker every time it's checked. */
+        PyMutex_Unlock(&pending->mutex);
+        return 0;
+    }
+    pending->busy = 1;
+    PyMutex_Unlock(&pending->mutex);
 
-    interp->ceval.pending.busy = 0;
-    return res;
+    /* unsignal before starting to call callbacks, so that any callback
+       added in-between re-signals */
+    UNSIGNAL_PENDING_CALLS(interp);
 
-error:
-    interp->ceval.pending.busy = 0;
-    SIGNAL_PENDING_CALLS(interp);
-    return res;
+    if (_make_pending_calls(pending) != 0) {
+        pending->busy = 0;
+        /* There might not be more calls to make, but we play it safe. */
+        SIGNAL_PENDING_CALLS(interp);
+        return -1;
+    }
+
+    if (_Py_IsMainThread() && _Py_IsMainInterpreter(interp)) {
+        if (_make_pending_calls(pending_main) != 0) {
+            pending->busy = 0;
+            /* There might not be more calls to make, but we play it safe. */
+            SIGNAL_PENDING_CALLS(interp);
+            return -1;
+        }
+    }
+
+    pending->busy = 0;
+    return 0;
 }
 
 void
 _Py_FinishPendingCalls(PyThreadState *tstate)
 {
     assert(PyGILState_Check());
-    assert(is_tstate_valid(tstate));
-
-    struct _pending_calls *pending = &tstate->interp->ceval.pending;
-
-    if (!_Py_atomic_load_relaxed_int32(&(pending->calls_to_do))) {
-        return;
-    }
+    assert(_PyThreadState_CheckConsistency(tstate));
 
     if (make_pending_calls(tstate->interp) < 0) {
         PyObject *exc = _PyErr_GetRaisedException(tstate);
@@ -928,21 +846,19 @@ _Py_FinishPendingCalls(PyThreadState *tstate)
     }
 }
 
-/* Py_MakePendingCalls() is a simple wrapper for the sake
-   of backward-compatibility. */
 int
-Py_MakePendingCalls(void)
+_PyEval_MakePendingCalls(PyThreadState *tstate)
 {
-    assert(PyGILState_Check());
-
-    PyThreadState *tstate = _PyThreadState_GET();
-    assert(is_tstate_valid(tstate));
+    int res;
 
-    /* Python signal handler doesn't really queue a callback: it only signals
-       that a signal was received, see _PyEval_SignalReceived(). */
-    int res = handle_signals(tstate);
-    if (res != 0) {
-        return res;
+    if (_Py_IsMainThread() && _Py_IsMainInterpreter(tstate->interp)) {
+        /* Python signal handler doesn't really queue a callback:
+           it only signals that a signal was received,
+           see _PyEval_SignalReceived(). */
+        res = handle_signals(tstate);
+        if (res != 0) {
+            return res;
+        }
     }
 
     res = make_pending_calls(tstate->interp);
@@ -953,95 +869,134 @@ Py_MakePendingCalls(void)
     return 0;
 }
 
-void
-_PyEval_InitState(PyInterpreterState *interp, PyThread_type_lock pending_lock)
+/* Py_MakePendingCalls() is a simple wrapper for the sake
+   of backward-compatibility. */
+int
+Py_MakePendingCalls(void)
 {
-    _gil_initialize(&interp->_gil);
+    assert(PyGILState_Check());
 
-    struct _pending_calls *pending = &interp->ceval.pending;
-    assert(pending->lock == NULL);
-    pending->lock = pending_lock;
+    PyThreadState *tstate = _PyThreadState_GET();
+    assert(_PyThreadState_CheckConsistency(tstate));
+
+    /* Only execute pending calls on the main thread. */
+    if (!_Py_IsMainThread() || !_Py_IsMainInterpreter(tstate->interp)) {
+        return 0;
+    }
+    return _PyEval_MakePendingCalls(tstate);
 }
 
 void
-_PyEval_FiniState(struct _ceval_state *ceval)
+_PyEval_InitState(PyInterpreterState *interp)
 {
-    struct _pending_calls *pending = &ceval->pending;
-    if (pending->lock != NULL) {
-        PyThread_free_lock(pending->lock);
-        pending->lock = NULL;
-    }
+    _gil_initialize(&interp->_gil);
 }
 
-/* Handle signals, pending calls, GIL drop request
-   and asynchronous exception */
+
+/* Do periodic things, like check for signals and async I/0.
+* We need to do reasonably frequently, but not too frequently.
+* All loops should include a check of the eval breaker.
+* We also check on return from any builtin function.
+*
+* ## More Details ###
+*
+* The eval loop (this function) normally executes the instructions
+* of a code object sequentially.  However, the runtime supports a
+* number of out-of-band execution scenarios that may pause that
+* sequential execution long enough to do that out-of-band work
+* in the current thread using the current PyThreadState.
+*
+* The scenarios include:
+*
+*  - cyclic garbage collection
+*  - GIL drop requests
+*  - "async" exceptions
+*  - "pending calls"  (some only in the main thread)
+*  - signal handling (only in the main thread)
+*
+* When the need for one of the above is detected, the eval loop
+* pauses long enough to handle the detected case.  Then, if doing
+* so didn't trigger an exception, the eval loop resumes executing
+* the sequential instructions.
+*
+* To make this work, the eval loop periodically checks if any
+* of the above needs to happen.  The individual checks can be
+* expensive if computed each time, so a while back we switched
+* to using pre-computed, per-interpreter variables for the checks,
+* and later consolidated that to a single "eval breaker" variable
+* (now a PyInterpreterState field).
+*
+* For the longest time, the eval breaker check would happen
+* frequently, every 5 or so times through the loop, regardless
+* of what instruction ran last or what would run next.  Then, in
+* early 2021 (gh-18334, commit 4958f5d), we switched to checking
+* the eval breaker less frequently, by hard-coding the check to
+* specific places in the eval loop (e.g. certain instructions).
+* The intent then was to check after returning from calls
+* and on the back edges of loops.
+*
+* In addition to being more efficient, that approach keeps
+* the eval loop from running arbitrary code between instructions
+* that don't handle that well.  (See gh-74174.)
+*
+* Currently, the eval breaker check happens on back edges in
+* the control flow graph, which pretty much applies to all loops,
+* and most calls.
+* (See bytecodes.c for exact information.)
+*
+* One consequence of this approach is that it might not be obvious
+* how to force any specific thread to pick up the eval breaker,
+* or for any specific thread to not pick it up.  Mostly this
+* involves judicious uses of locks and careful ordering of code,
+* while avoiding code that might trigger the eval breaker
+* until so desired.
+*/
 int
 _Py_HandlePending(PyThreadState *tstate)
 {
-    _PyRuntimeState * const runtime = &_PyRuntime;
-    struct _ceval_runtime_state *ceval = &runtime->ceval;
-    struct _ceval_state *interp_ceval_state = &tstate->interp->ceval;
+    PyInterpreterState *interp = tstate->interp;
 
     /* Pending signals */
-    if (_Py_atomic_load_relaxed_int32(&ceval->signals_pending)) {
+    if (_Py_eval_breaker_bit_is_set(interp, _PY_SIGNALS_PENDING_BIT)) {
         if (handle_signals(tstate) != 0) {
             return -1;
         }
     }
 
     /* Pending calls */
-    if (_Py_atomic_load_relaxed_int32(&interp_ceval_state->pending.calls_to_do)) {
-        if (make_pending_calls(tstate->interp) != 0) {
+    if (_Py_eval_breaker_bit_is_set(interp, _PY_CALLS_TO_DO_BIT)) {
+        if (make_pending_calls(interp) != 0) {
             return -1;
         }
     }
 
     /* GC scheduled to run */
-    if (_Py_atomic_load_relaxed_int32(&interp_ceval_state->gc_scheduled)) {
-        _Py_atomic_store_relaxed(&interp_ceval_state->gc_scheduled, 0);
-        COMPUTE_EVAL_BREAKER(tstate->interp, ceval, interp_ceval_state);
+    if (_Py_eval_breaker_bit_is_set(interp, _PY_GC_SCHEDULED_BIT)) {
+        _Py_set_eval_breaker_bit(interp, _PY_GC_SCHEDULED_BIT, 0);
         _Py_RunGC(tstate);
     }
 
     /* GIL drop request */
-    if (_Py_atomic_load_relaxed_int32(&interp_ceval_state->gil_drop_request)) {
+    if (_Py_eval_breaker_bit_is_set(interp, _PY_GIL_DROP_REQUEST_BIT)) {
         /* Give another thread a chance */
-        if (_PyThreadState_SwapNoGIL(NULL) != tstate) {
-            Py_FatalError("tstate mix-up");
-        }
-        drop_gil(interp_ceval_state, tstate);
+        _PyThreadState_Detach(tstate);
 
         /* Other threads may run now */
 
-        take_gil(tstate);
-
-        if (_PyThreadState_SwapNoGIL(tstate) != NULL) {
-            Py_FatalError("orphan tstate");
-        }
+        _PyThreadState_Attach(tstate);
     }
 
     /* Check for asynchronous exception. */
-    if (tstate->async_exc != NULL) {
-        PyObject *exc = tstate->async_exc;
-        tstate->async_exc = NULL;
-        UNSIGNAL_ASYNC_EXC(tstate->interp);
-        _PyErr_SetNone(tstate, exc);
-        Py_DECREF(exc);
-        return -1;
+    if (_Py_eval_breaker_bit_is_set(interp, _PY_ASYNC_EXCEPTION_BIT)) {
+        _Py_set_eval_breaker_bit(interp, _PY_ASYNC_EXCEPTION_BIT, 0);
+        if (tstate->async_exc != NULL) {
+            PyObject *exc = tstate->async_exc;
+            tstate->async_exc = NULL;
+            _PyErr_SetNone(tstate, exc);
+            Py_DECREF(exc);
+            return -1;
+        }
     }
-
-
-    // It is possible that some of the conditions that trigger the eval breaker
-    // are called in a different thread than the Python thread. An example of
-    // this is bpo-42296: On Windows, _PyEval_SignalReceived() can be called in
-    // a different thread than the Python thread, in which case
-    // _Py_ThreadCanHandleSignals() is wrong. Recompute eval_breaker in the
-    // current Python thread with the correct _Py_ThreadCanHandleSignals()
-    // value. It prevents to interrupt the eval loop at every instruction if
-    // the current Python thread cannot handle signals (if
-    // _Py_ThreadCanHandleSignals() is false).
-    COMPUTE_EVAL_BREAKER(tstate->interp, ceval, interp_ceval_state);
-
     return 0;
 }
 
diff --git a/Python/ceval_macros.h b/Python/ceval_macros.h
index e92ff0bd6fba6f..b0cb7c8926338c 100644
--- a/Python/ceval_macros.h
+++ b/Python/ceval_macros.h
@@ -1,4 +1,4 @@
-// Macros needed by ceval.c and bytecodes.c
+// Macros and other things needed by ceval.c, and bytecodes.c
 
 /* Computed GOTOs, or
        the-optimization-commonly-but-improperly-known-as-"threaded code"
@@ -60,28 +60,27 @@
 #endif
 
 #ifdef Py_STATS
-#define INSTRUCTION_START(op) \
+#define INSTRUCTION_STATS(op) \
     do { \
-        frame->prev_instr = next_instr++; \
         OPCODE_EXE_INC(op); \
-        if (_py_stats) _py_stats->opcode_stats[lastopcode].pair_count[op]++; \
+        if (_Py_stats) _Py_stats->opcode_stats[lastopcode].pair_count[op]++; \
         lastopcode = op; \
     } while (0)
 #else
-#define INSTRUCTION_START(op) (frame->prev_instr = next_instr++)
+#define INSTRUCTION_STATS(op) ((void)0)
 #endif
 
 #if USE_COMPUTED_GOTOS
-#  define TARGET(op) TARGET_##op: INSTRUCTION_START(op);
+#  define TARGET(op) TARGET_##op:
 #  define DISPATCH_GOTO() goto *opcode_targets[opcode]
 #else
-#  define TARGET(op) case op: TARGET_##op: INSTRUCTION_START(op);
+#  define TARGET(op) case op: TARGET_##op:
 #  define DISPATCH_GOTO() goto dispatch_opcode
 #endif
 
 /* PRE_DISPATCH_GOTO() does lltrace if enabled. Normally a no-op */
 #ifdef LLTRACE
-#define PRE_DISPATCH_GOTO() if (lltrace) { \
+#define PRE_DISPATCH_GOTO() if (lltrace >= 5) { \
     lltrace_instruction(frame, stack_pointer, next_instr); }
 #else
 #define PRE_DISPATCH_GOTO() ((void)0)
@@ -107,17 +106,21 @@
     do {                                                \
         assert(tstate->interp->eval_frame == NULL);     \
         _PyFrame_SetStackPointer(frame, stack_pointer); \
-        frame->prev_instr = next_instr - 1;             \
         (NEW_FRAME)->previous = frame;                  \
-        frame = cframe.current_frame = (NEW_FRAME);     \
+        frame = tstate->current_frame = (NEW_FRAME);     \
         CALL_STAT_INC(inlined_py_calls);                \
         goto start_frame;                               \
     } while (0)
 
+// Use this instead of 'goto error' so Tier 2 can go to a different label
+#define GOTO_ERROR(LABEL) goto LABEL
+
 #define CHECK_EVAL_BREAKER() \
     _Py_CHECK_EMSCRIPTEN_SIGNALS_PERIODICALLY(); \
-    if (_Py_atomic_load_relaxed_int32(eval_breaker)) { \
-        goto handle_eval_breaker; \
+    if (_Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker) & _PY_EVAL_EVENTS_MASK) { \
+        if (_Py_HandlePending(tstate) != 0) { \
+            GOTO_ERROR(error); \
+        } \
     }
 
 
@@ -138,14 +141,19 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 /* Code access macros */
 
 /* The integer overflow is checked by an assertion below. */
-#define INSTR_OFFSET() ((int)(next_instr - _PyCode_CODE(frame->f_code)))
+#define INSTR_OFFSET() ((int)(next_instr - _PyCode_CODE(_PyFrame_GetCode(frame))))
 #define NEXTOPARG()  do { \
         _Py_CODEUNIT word = *next_instr; \
         opcode = word.op.code; \
         oparg = word.op.arg; \
     } while (0)
-#define JUMPTO(x)       (next_instr = _PyCode_CODE(frame->f_code) + (x))
+
+/* JUMPBY makes the generator identify the instruction as a jump. SKIP_OVER is
+ * for advancing to the next instruction, taking into account cache entries
+ * and skipped instructions.
+ */
 #define JUMPBY(x)       (next_instr += (x))
+#define SKIP_OVER(x)    (next_instr += (x))
 
 /* OpCode prediction macros
     Some opcodes tend to come in pairs thus making it possible to
@@ -174,21 +182,6 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 */
 
 #define PREDICT_ID(op)          PRED_##op
-
-#if USE_COMPUTED_GOTOS
-#define PREDICT(op)             if (0) goto PREDICT_ID(op)
-#else
-#define PREDICT(next_op) \
-    do { \
-        _Py_CODEUNIT word = *next_instr; \
-        opcode = word.op.code; \
-        if (opcode == next_op) { \
-            oparg = word.op.arg; \
-            INSTRUCTION_START(next_op); \
-            goto PREDICT_ID(next_op); \
-        } \
-    } while(0)
-#endif
 #define PREDICTED(op)           PREDICT_ID(op):
 
 
@@ -197,7 +190,7 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 /* The stack can grow at most MAXINT deep, as co_nlocals and
    co_stacksize are ints. */
 #define STACK_LEVEL()     ((int)(stack_pointer - _PyFrame_Stackbase(frame)))
-#define STACK_SIZE()      (frame->f_code->co_stacksize)
+#define STACK_SIZE()      (_PyFrame_GetCode(frame)->co_stacksize)
 #define EMPTY()           (STACK_LEVEL() == 0)
 #define TOP()             (stack_pointer[-1])
 #define SECOND()          (stack_pointer[-2])
@@ -234,8 +227,14 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 #define STACK_SHRINK(n)        BASIC_STACKADJ(-(n))
 #endif
 
+
+/* Data access macros */
+#define FRAME_CO_CONSTS (_PyFrame_GetCode(frame)->co_consts)
+#define FRAME_CO_NAMES  (_PyFrame_GetCode(frame)->co_names)
+
 /* Local variable macros */
 
+#define LOCALS_ARRAY    (frame->localsplus)
 #define GETLOCAL(i)     (frame->localsplus[i])
 
 /* The SETLOCAL() macro must not DECREF the local variable in-place and
@@ -280,6 +279,8 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 #define GLOBALS() frame->f_globals
 #define BUILTINS() frame->f_builtins
 #define LOCALS() frame->f_locals
+#define CONSTS() _PyFrame_GetCode(frame)->co_consts
+#define NAMES() _PyFrame_GetCode(frame)->co_names
 
 #define DTRACE_FUNCTION_ENTRY()  \
     if (PyDTrace_FUNCTION_ENTRY_ENABLED()) { \
@@ -300,15 +301,16 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 
 #define INCREMENT_ADAPTIVE_COUNTER(COUNTER)          \
     do {                                             \
-        assert(!ADAPTIVE_COUNTER_IS_MAX((COUNTER))); \
         (COUNTER) += (1 << ADAPTIVE_BACKOFF_BITS);   \
     } while (0);
 
+#define UNBOUNDLOCAL_ERROR_MSG \
+    "cannot access local variable '%s' where it is not associated with a value"
+#define UNBOUNDFREE_ERROR_MSG \
+    "cannot access free variable '%s' where it is not associated with a value" \
+    " in enclosing scope"
 #define NAME_ERROR_MSG "name '%.200s' is not defined"
 
-#define KWNAMES_LEN() \
-    (kwnames == NULL ? 0 : ((int)PyTuple_GET_SIZE(kwnames)))
-
 #define DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dval, result) \
 do { \
     if (Py_REFCNT(left) == 1) { \
@@ -323,7 +325,7 @@ do { \
     }\
     else { \
         result = PyFloat_FromDouble(dval); \
-        if ((result) == NULL) goto error; \
+        if ((result) == NULL) GOTO_ERROR(error); \
         _Py_DECREF_NO_DEALLOC(left); \
         _Py_DECREF_NO_DEALLOC(right); \
     } \
@@ -342,3 +344,60 @@ do { \
         goto error; \
     } \
 } while (0);
+
+typedef PyObject *(*convertion_func_ptr)(PyObject *);
+
+static const convertion_func_ptr CONVERSION_FUNCTIONS[4] = {
+    [FVC_STR] = PyObject_Str,
+    [FVC_REPR] = PyObject_Repr,
+    [FVC_ASCII] = PyObject_ASCII
+};
+
+// GH-89279: Force inlining by using a macro.
+#if defined(_MSC_VER) && SIZEOF_INT == 4
+#define _Py_atomic_load_relaxed_int32(ATOMIC_VAL) (assert(sizeof((ATOMIC_VAL)->_value) == 4), *((volatile int*)&((ATOMIC_VAL)->_value)))
+#else
+#define _Py_atomic_load_relaxed_int32(ATOMIC_VAL) _Py_atomic_load_relaxed(ATOMIC_VAL)
+#endif
+
+static inline int _Py_EnterRecursivePy(PyThreadState *tstate) {
+    return (tstate->py_recursion_remaining-- <= 0) &&
+        _Py_CheckRecursiveCallPy(tstate);
+}
+
+static inline void _Py_LeaveRecursiveCallPy(PyThreadState *tstate)  {
+    tstate->py_recursion_remaining++;
+}
+
+/* Marker to specify tier 1 only instructions */
+#define TIER_ONE_ONLY
+
+/* Marker to specify tier 2 only instructions */
+#define TIER_TWO_ONLY
+
+/* Implementation of "macros" that modify the instruction pointer,
+ * stack pointer, or frame pointer.
+ * These need to treated differently by tier 1 and 2.
+ * The Tier 1 version is here; Tier 2 is inlined in ceval.c. */
+
+#define LOAD_IP(OFFSET) do { \
+        next_instr = frame->instr_ptr + (OFFSET); \
+    } while (0)
+
+/* There's no STORE_IP(), it's inlined by the code generator. */
+
+#define STORE_SP() \
+_PyFrame_SetStackPointer(frame, stack_pointer)
+
+#define LOAD_SP() \
+stack_pointer = _PyFrame_GetStackPointer(frame);
+
+/* Tier-switching macros. */
+
+#define GOTO_TIER_TWO() goto enter_tier_two;
+
+#define GOTO_TIER_ONE() goto exit_trace;
+
+#define CURRENT_OPARG() (next_uop[-1].oparg)
+
+#define CURRENT_OPERAND() (next_uop[-1].operand)
diff --git a/Python/clinic/Python-tokenize.c.h b/Python/clinic/Python-tokenize.c.h
index 6af93743f40dab..730fa8ef2a2154 100644
--- a/Python/clinic/Python-tokenize.c.h
+++ b/Python/clinic/Python-tokenize.c.h
@@ -3,13 +3,14 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 static PyObject *
-tokenizeriter_new_impl(PyTypeObject *type, const char *source);
+tokenizeriter_new_impl(PyTypeObject *type, PyObject *readline,
+                       int extra_tokens, const char *encoding);
 
 static PyObject *
 tokenizeriter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
@@ -17,14 +18,14 @@ tokenizeriter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
-    #define NUM_KEYWORDS 1
+    #define NUM_KEYWORDS 2
     static struct {
         PyGC_Head _this_is_not_used;
         PyObject_VAR_HEAD
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(source), },
+        .ob_item = { &_Py_ID(extra_tokens), &_Py_ID(encoding), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -33,38 +34,50 @@ tokenizeriter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     #  define KWTUPLE NULL
     #endif  // !Py_BUILD_CORE
 
-    static const char * const _keywords[] = {"source", NULL};
+    static const char * const _keywords[] = {"", "extra_tokens", "encoding", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
         .fname = "tokenizeriter",
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
+    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
-    const char *source;
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
+    PyObject *readline;
+    int extra_tokens;
+    const char *encoding = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 1, argsbuf);
     if (!fastargs) {
         goto exit;
     }
-    if (!PyUnicode_Check(fastargs[0])) {
-        _PyArg_BadArgument("tokenizeriter", "argument 'source'", "str", fastargs[0]);
+    readline = fastargs[0];
+    extra_tokens = PyObject_IsTrue(fastargs[1]);
+    if (extra_tokens < 0) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (!PyUnicode_Check(fastargs[2])) {
+        _PyArg_BadArgument("tokenizeriter", "argument 'encoding'", "str", fastargs[2]);
         goto exit;
     }
-    Py_ssize_t source_length;
-    source = PyUnicode_AsUTF8AndSize(fastargs[0], &source_length);
-    if (source == NULL) {
+    Py_ssize_t encoding_length;
+    encoding = PyUnicode_AsUTF8AndSize(fastargs[2], &encoding_length);
+    if (encoding == NULL) {
         goto exit;
     }
-    if (strlen(source) != (size_t)source_length) {
+    if (strlen(encoding) != (size_t)encoding_length) {
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
-    return_value = tokenizeriter_new_impl(type, source);
+skip_optional_kwonly:
+    return_value = tokenizeriter_new_impl(type, readline, extra_tokens, encoding);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=8c2c09f651961986 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dcd6ec48f06a092e input=a9049054013a1b77]*/
diff --git a/Python/clinic/_warnings.c.h b/Python/clinic/_warnings.c.h
index 432e554af85cf6..98dc49db3059b1 100644
--- a/Python/clinic/_warnings.c.h
+++ b/Python/clinic/_warnings.c.h
@@ -3,10 +3,11 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(warnings_warn__doc__,
 "warn($module, /, message, category=None, stacklevel=1, source=None, *,\n"
@@ -193,11 +194,8 @@ warnings_warn_explicit(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         _PyArg_BadArgument("warn_explicit", "argument 'filename'", "str", args[2]);
         goto exit;
     }
-    if (PyUnicode_READY(args[2]) == -1) {
-        goto exit;
-    }
     filename = args[2];
-    lineno = _PyLong_AsInt(args[3]);
+    lineno = PyLong_AsInt(args[3]);
     if (lineno == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -246,4 +244,4 @@ warnings_filters_mutated(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return warnings_filters_mutated_impl(module);
 }
-/*[clinic end generated code: output=20429719d7223bdc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f2d4214c382717a6 input=a9049054013a1b77]*/
diff --git a/Python/clinic/bltinmodule.c.h b/Python/clinic/bltinmodule.c.h
index b77b4a1e4b410e..8d40e659b54a57 100644
--- a/Python/clinic/bltinmodule.c.h
+++ b/Python/clinic/bltinmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(builtin___import____doc__,
 "__import__($module, /, name, globals=None, locals=None, fromlist=(),\n"
@@ -99,7 +99,7 @@ builtin___import__(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
             goto skip_optional_pos;
         }
     }
-    level = _PyLong_AsInt(args[4]);
+    level = PyLong_AsInt(args[4]);
     if (level == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -216,9 +216,6 @@ builtin_format(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("format", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     format_spec = args[1];
 skip_optional:
     return_value = builtin_format_impl(module, value, format_spec);
@@ -245,7 +242,7 @@ builtin_chr(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int i;
 
-    i = _PyLong_AsInt(arg);
+    i = PyLong_AsInt(arg);
     if (i == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -345,7 +342,7 @@ builtin_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         goto skip_optional_pos;
     }
     if (args[3]) {
-        flags = _PyLong_AsInt(args[3]);
+        flags = PyLong_AsInt(args[3]);
         if (flags == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -363,7 +360,7 @@ builtin_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         }
     }
     if (args[5]) {
-        optimize = _PyLong_AsInt(args[5]);
+        optimize = PyLong_AsInt(args[5]);
         if (optimize == -1 && PyErr_Occurred()) {
             goto exit;
         }
@@ -375,7 +372,7 @@ builtin_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     if (!noptargs) {
         goto skip_optional_kwonly;
     }
-    feature_version = _PyLong_AsInt(args[6]);
+    feature_version = PyLong_AsInt(args[6]);
     if (feature_version == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -386,49 +383,6 @@ builtin_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     return return_value;
 }
 
-PyDoc_STRVAR(builtin_dir__doc__,
-"dir($module, arg=<unrepresentable>, /)\n"
-"--\n"
-"\n"
-"Show attributes of an object.\n"
-"\n"
-"If called without an argument, return the names in the current scope.\n"
-"Else, return an alphabetized list of names comprising (some of) the attributes\n"
-"of the given object, and of attributes reachable from it.\n"
-"If the object supplies a method named __dir__, it will be used; otherwise\n"
-"the default dir() logic is used and returns:\n"
-"  for a module object: the module\'s attributes.\n"
-"  for a class object:  its attributes, and recursively the attributes\n"
-"    of its bases.\n"
-"  for any other object: its attributes, its class\'s attributes, and\n"
-"    recursively the attributes of its class\'s base classes.");
-
-#define BUILTIN_DIR_METHODDEF    \
-    {"dir", _PyCFunction_CAST(builtin_dir), METH_FASTCALL, builtin_dir__doc__},
-
-static PyObject *
-builtin_dir_impl(PyObject *module, PyObject *arg);
-
-static PyObject *
-builtin_dir(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *arg = NULL;
-
-    if (!_PyArg_CheckPositional("dir", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    arg = args[0];
-skip_optional:
-    return_value = builtin_dir_impl(module, arg);
-
-exit:
-    return return_value;
-}
-
 PyDoc_STRVAR(builtin_divmod__doc__,
 "divmod($module, x, y, /)\n"
 "--\n"
@@ -589,47 +543,6 @@ builtin_exec(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     return return_value;
 }
 
-PyDoc_STRVAR(builtin_getattr__doc__,
-"getattr($module, object, name, default=<unrepresentable>, /)\n"
-"--\n"
-"\n"
-"Get a named attribute from an object.\n"
-"\n"
-"getattr(x, \'y\') is equivalent to x.y\n"
-"When a default argument is given, it is returned when the attribute doesn\'t\n"
-"exist; without it, an exception is raised in that case.");
-
-#define BUILTIN_GETATTR_METHODDEF    \
-    {"getattr", _PyCFunction_CAST(builtin_getattr), METH_FASTCALL, builtin_getattr__doc__},
-
-static PyObject *
-builtin_getattr_impl(PyObject *module, PyObject *object, PyObject *name,
-                     PyObject *default_value);
-
-static PyObject *
-builtin_getattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *object;
-    PyObject *name;
-    PyObject *default_value = NULL;
-
-    if (!_PyArg_CheckPositional("getattr", nargs, 2, 3)) {
-        goto exit;
-    }
-    object = args[0];
-    name = args[1];
-    if (nargs < 3) {
-        goto skip_optional;
-    }
-    default_value = args[2];
-skip_optional:
-    return_value = builtin_getattr_impl(module, object, name, default_value);
-
-exit:
-    return return_value;
-}
-
 PyDoc_STRVAR(builtin_globals__doc__,
 "globals($module, /)\n"
 "--\n"
@@ -695,44 +608,6 @@ PyDoc_STRVAR(builtin_id__doc__,
 #define BUILTIN_ID_METHODDEF    \
     {"id", (PyCFunction)builtin_id, METH_O, builtin_id__doc__},
 
-PyDoc_STRVAR(builtin_next__doc__,
-"next($module, iterator, default=<unrepresentable>, /)\n"
-"--\n"
-"\n"
-"Return the next item from the iterator.\n"
-"\n"
-"If default is given and the iterator is exhausted,\n"
-"it is returned instead of raising StopIteration.");
-
-#define BUILTIN_NEXT_METHODDEF    \
-    {"next", _PyCFunction_CAST(builtin_next), METH_FASTCALL, builtin_next__doc__},
-
-static PyObject *
-builtin_next_impl(PyObject *module, PyObject *iterator,
-                  PyObject *default_value);
-
-static PyObject *
-builtin_next(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *iterator;
-    PyObject *default_value = NULL;
-
-    if (!_PyArg_CheckPositional("next", nargs, 1, 2)) {
-        goto exit;
-    }
-    iterator = args[0];
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    default_value = args[1];
-skip_optional:
-    return_value = builtin_next_impl(module, iterator, default_value);
-
-exit:
-    return return_value;
-}
-
 PyDoc_STRVAR(builtin_setattr__doc__,
 "setattr($module, obj, name, value, /)\n"
 "--\n"
@@ -824,43 +699,6 @@ PyDoc_STRVAR(builtin_hex__doc__,
 #define BUILTIN_HEX_METHODDEF    \
     {"hex", (PyCFunction)builtin_hex, METH_O, builtin_hex__doc__},
 
-PyDoc_STRVAR(builtin_iter__doc__,
-"iter($module, object, sentinel=<unrepresentable>, /)\n"
-"--\n"
-"\n"
-"Get an iterator from an object.\n"
-"\n"
-"In the first form, the argument must supply its own iterator, or be a sequence.\n"
-"In the second form, the callable is called until it returns the sentinel.");
-
-#define BUILTIN_ITER_METHODDEF    \
-    {"iter", _PyCFunction_CAST(builtin_iter), METH_FASTCALL, builtin_iter__doc__},
-
-static PyObject *
-builtin_iter_impl(PyObject *module, PyObject *object, PyObject *sentinel);
-
-static PyObject *
-builtin_iter(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *object;
-    PyObject *sentinel = NULL;
-
-    if (!_PyArg_CheckPositional("iter", nargs, 1, 2)) {
-        goto exit;
-    }
-    object = args[0];
-    if (nargs < 2) {
-        goto skip_optional;
-    }
-    sentinel = args[1];
-skip_optional:
-    return_value = builtin_iter_impl(module, object, sentinel);
-
-exit:
-    return return_value;
-}
-
 PyDoc_STRVAR(builtin_aiter__doc__,
 "aiter($module, async_iterable, /)\n"
 "--\n"
@@ -1239,41 +1077,6 @@ builtin_round(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     return return_value;
 }
 
-PyDoc_STRVAR(builtin_vars__doc__,
-"vars($module, object=<unrepresentable>, /)\n"
-"--\n"
-"\n"
-"Show vars.\n"
-"\n"
-"Without arguments, equivalent to locals().\n"
-"With an argument, equivalent to object.__dict__.");
-
-#define BUILTIN_VARS_METHODDEF    \
-    {"vars", _PyCFunction_CAST(builtin_vars), METH_FASTCALL, builtin_vars__doc__},
-
-static PyObject *
-builtin_vars_impl(PyObject *module, PyObject *object);
-
-static PyObject *
-builtin_vars(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *object = NULL;
-
-    if (!_PyArg_CheckPositional("vars", nargs, 0, 1)) {
-        goto exit;
-    }
-    if (nargs < 1) {
-        goto skip_optional;
-    }
-    object = args[0];
-skip_optional:
-    return_value = builtin_vars_impl(module, object);
-
-exit:
-    return return_value;
-}
-
 PyDoc_STRVAR(builtin_sum__doc__,
 "sum($module, iterable, /, start=0)\n"
 "--\n"
@@ -1409,4 +1212,4 @@ builtin_issubclass(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=84a04e7446debf58 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=31bded5d08647a57 input=a9049054013a1b77]*/
diff --git a/Python/clinic/context.c.h b/Python/clinic/context.c.h
index 27c375717bff96..997ac6f63384a9 100644
--- a/Python/clinic/context.c.h
+++ b/Python/clinic/context.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_contextvars_Context_get__doc__,
 "get($self, key, default=None, /)\n"
@@ -183,4 +179,4 @@ PyDoc_STRVAR(_contextvars_ContextVar_reset__doc__,
 
 #define _CONTEXTVARS_CONTEXTVAR_RESET_METHODDEF    \
     {"reset", (PyCFunction)_contextvars_ContextVar_reset, METH_O, _contextvars_ContextVar_reset__doc__},
-/*[clinic end generated code: output=0c94d4b919500438 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b667826178444c3f input=a9049054013a1b77]*/
diff --git a/Python/clinic/import.c.h b/Python/clinic/import.c.h
index cb74be6a422124..5edeaef656ef62 100644
--- a/Python/clinic/import.c.h
+++ b/Python/clinic/import.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_imp_lock_held__doc__,
 "lock_held($module, /)\n"
@@ -106,9 +106,6 @@ _imp__fix_co_filename(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
         _PyArg_BadArgument("_fix_co_filename", "argument 2", "str", args[1]);
         goto exit;
     }
-    if (PyUnicode_READY(args[1]) == -1) {
-        goto exit;
-    }
     path = args[1];
     return_value = _imp__fix_co_filename_impl(module, code, path);
 
@@ -165,9 +162,6 @@ _imp_init_frozen(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("init_frozen", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     name = arg;
     return_value = _imp_init_frozen_impl(module, name);
 
@@ -237,9 +231,6 @@ _imp_find_frozen(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         _PyArg_BadArgument("find_frozen", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     name = args[0];
     if (!noptargs) {
         goto skip_optional_kwonly;
@@ -282,9 +273,6 @@ _imp_get_frozen_object(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         _PyArg_BadArgument("get_frozen_object", "argument 1", "str", args[0]);
         goto exit;
     }
-    if (PyUnicode_READY(args[0]) == -1) {
-        goto exit;
-    }
     name = args[0];
     if (nargs < 2) {
         goto skip_optional;
@@ -319,9 +307,6 @@ _imp_is_frozen_package(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("is_frozen_package", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     name = arg;
     return_value = _imp_is_frozen_package_impl(module, name);
 
@@ -351,9 +336,6 @@ _imp_is_builtin(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("is_builtin", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     name = arg;
     return_value = _imp_is_builtin_impl(module, name);
 
@@ -383,9 +365,6 @@ _imp_is_frozen(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("is_frozen", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     name = arg;
     return_value = _imp_is_frozen_impl(module, name);
 
@@ -432,7 +411,7 @@ _imp__override_frozen_modules_for_tests(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int override;
 
-    override = _PyLong_AsInt(arg);
+    override = PyLong_AsInt(arg);
     if (override == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -463,7 +442,7 @@ _imp__override_multi_interp_extensions_check(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int override;
 
-    override = _PyLong_AsInt(arg);
+    override = PyLong_AsInt(arg);
     if (override == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -626,10 +605,6 @@ _imp_source_hash(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     if (PyObject_GetBuffer(args[1], &source, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&source, 'C')) {
-        _PyArg_BadArgument("source_hash", "argument 'source'", "contiguous buffer", args[1]);
-        goto exit;
-    }
     return_value = _imp_source_hash_impl(module, key, &source);
 
 exit:
@@ -648,4 +623,4 @@ _imp_source_hash(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
 #ifndef _IMP_EXEC_DYNAMIC_METHODDEF
     #define _IMP_EXEC_DYNAMIC_METHODDEF
 #endif /* !defined(_IMP_EXEC_DYNAMIC_METHODDEF) */
-/*[clinic end generated code: output=b18d46e0036eff49 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dbd63707bd40b07c input=a9049054013a1b77]*/
diff --git a/Python/clinic/instrumentation.c.h b/Python/clinic/instrumentation.c.h
index cf3984ca24bbfe..8dae747c44a543 100644
--- a/Python/clinic/instrumentation.c.h
+++ b/Python/clinic/instrumentation.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(monitoring_use_tool_id__doc__,
 "use_tool_id($module, tool_id, name, /)\n"
@@ -29,7 +25,7 @@ monitoring_use_tool_id(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     if (!_PyArg_CheckPositional("use_tool_id", nargs, 2, 2)) {
         goto exit;
     }
-    tool_id = _PyLong_AsInt(args[0]);
+    tool_id = PyLong_AsInt(args[0]);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -57,7 +53,7 @@ monitoring_free_tool_id(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int tool_id;
 
-    tool_id = _PyLong_AsInt(arg);
+    tool_id = PyLong_AsInt(arg);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -84,7 +80,7 @@ monitoring_get_tool(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int tool_id;
 
-    tool_id = _PyLong_AsInt(arg);
+    tool_id = PyLong_AsInt(arg);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -117,11 +113,11 @@ monitoring_register_callback(PyObject *module, PyObject *const *args, Py_ssize_t
     if (!_PyArg_CheckPositional("register_callback", nargs, 3, 3)) {
         goto exit;
     }
-    tool_id = _PyLong_AsInt(args[0]);
+    tool_id = PyLong_AsInt(args[0]);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    event = _PyLong_AsInt(args[1]);
+    event = PyLong_AsInt(args[1]);
     if (event == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -150,7 +146,7 @@ monitoring_get_events(PyObject *module, PyObject *arg)
     int tool_id;
     int _return_value;
 
-    tool_id = _PyLong_AsInt(arg);
+    tool_id = PyLong_AsInt(arg);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -185,11 +181,11 @@ monitoring_set_events(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyArg_CheckPositional("set_events", nargs, 2, 2)) {
         goto exit;
     }
-    tool_id = _PyLong_AsInt(args[0]);
+    tool_id = PyLong_AsInt(args[0]);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    event_set = _PyLong_AsInt(args[1]);
+    event_set = PyLong_AsInt(args[1]);
     if (event_set == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -222,7 +218,7 @@ monitoring_get_local_events(PyObject *module, PyObject *const *args, Py_ssize_t
     if (!_PyArg_CheckPositional("get_local_events", nargs, 2, 2)) {
         goto exit;
     }
-    tool_id = _PyLong_AsInt(args[0]);
+    tool_id = PyLong_AsInt(args[0]);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -260,12 +256,12 @@ monitoring_set_local_events(PyObject *module, PyObject *const *args, Py_ssize_t
     if (!_PyArg_CheckPositional("set_local_events", nargs, 3, 3)) {
         goto exit;
     }
-    tool_id = _PyLong_AsInt(args[0]);
+    tool_id = PyLong_AsInt(args[0]);
     if (tool_id == -1 && PyErr_Occurred()) {
         goto exit;
     }
     code = args[1];
-    event_set = _PyLong_AsInt(args[2]);
+    event_set = PyLong_AsInt(args[2]);
     if (event_set == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -308,4 +304,4 @@ monitoring__all_events(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return monitoring__all_events_impl(module);
 }
-/*[clinic end generated code: output=11cc0803875b3ffa input=a9049054013a1b77]*/
+/*[clinic end generated code: output=14ffc0884a6de50a input=a9049054013a1b77]*/
diff --git a/Python/clinic/marshal.c.h b/Python/clinic/marshal.c.h
index a593b980544b72..e6b0f1999a41c5 100644
--- a/Python/clinic/marshal.c.h
+++ b/Python/clinic/marshal.c.h
@@ -2,11 +2,7 @@
 preserve
 [clinic start generated code]*/
 
-#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
-#endif
-
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(marshal_dump__doc__,
 "dump($module, value, file, version=version, /)\n"
@@ -48,7 +44,7 @@ marshal_dump(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 3) {
         goto skip_optional;
     }
-    version = _PyLong_AsInt(args[2]);
+    version = PyLong_AsInt(args[2]);
     if (version == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -112,7 +108,7 @@ marshal_dumps(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 2) {
         goto skip_optional;
     }
-    version = _PyLong_AsInt(args[1]);
+    version = PyLong_AsInt(args[1]);
     if (version == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -147,10 +143,6 @@ marshal_loads(PyObject *module, PyObject *arg)
     if (PyObject_GetBuffer(arg, &bytes, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&bytes, 'C')) {
-        _PyArg_BadArgument("loads", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = marshal_loads_impl(module, &bytes);
 
 exit:
@@ -161,4 +153,4 @@ marshal_loads(PyObject *module, PyObject *arg)
 
     return return_value;
 }
-/*[clinic end generated code: output=12082d61d2942473 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=92d2d47aac9128ee input=a9049054013a1b77]*/
diff --git a/Python/clinic/sysmodule.c.h b/Python/clinic/sysmodule.c.h
index 7a7c188bcccc37..93b8385a5b4097 100644
--- a/Python/clinic/sysmodule.c.h
+++ b/Python/clinic/sysmodule.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(sys_addaudithook__doc__,
 "addaudithook($module, /, hook)\n"
@@ -282,9 +282,6 @@ sys_intern(PyObject *module, PyObject *arg)
         _PyArg_BadArgument("intern", "argument", "str", arg);
         goto exit;
     }
-    if (PyUnicode_READY(arg) == -1) {
-        goto exit;
-    }
     s = arg;
     return_value = sys_intern_impl(module, s);
 
@@ -292,6 +289,40 @@ sys_intern(PyObject *module, PyObject *arg)
     return return_value;
 }
 
+PyDoc_STRVAR(sys__is_interned__doc__,
+"_is_interned($module, string, /)\n"
+"--\n"
+"\n"
+"Return True if the given string is \"interned\".");
+
+#define SYS__IS_INTERNED_METHODDEF    \
+    {"_is_interned", (PyCFunction)sys__is_interned, METH_O, sys__is_interned__doc__},
+
+static int
+sys__is_interned_impl(PyObject *module, PyObject *string);
+
+static PyObject *
+sys__is_interned(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    PyObject *string;
+    int _return_value;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("_is_interned", "argument", "str", arg);
+        goto exit;
+    }
+    string = arg;
+    _return_value = sys__is_interned_impl(module, string);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
 PyDoc_STRVAR(sys__settraceallthreads__doc__,
 "_settraceallthreads($module, arg, /)\n"
 "--\n"
@@ -447,7 +478,7 @@ sys_setrecursionlimit(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int new_limit;
 
-    new_limit = _PyLong_AsInt(arg);
+    new_limit = PyLong_AsInt(arg);
     if (new_limit == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -510,7 +541,7 @@ sys_set_coroutine_origin_tracking_depth(PyObject *module, PyObject *const *args,
     if (!args) {
         goto exit;
     }
-    depth = _PyLong_AsInt(args[0]);
+    depth = PyLong_AsInt(args[0]);
     if (depth == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -678,7 +709,7 @@ sys_setdlopenflags(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int new_val;
 
-    new_val = _PyLong_AsInt(arg);
+    new_val = PyLong_AsInt(arg);
     if (new_val == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -733,7 +764,7 @@ sys_mdebug(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     int flag;
 
-    flag = _PyLong_AsInt(arg);
+    flag = PyLong_AsInt(arg);
     if (flag == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -811,7 +842,7 @@ sys_set_int_max_str_digits(PyObject *module, PyObject *const *args, Py_ssize_t n
     if (!args) {
         goto exit;
     }
-    maxdigits = _PyLong_AsInt(args[0]);
+    maxdigits = PyLong_AsInt(args[0]);
     if (maxdigits == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -972,7 +1003,7 @@ sys__getframe(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     if (nargs < 1) {
         goto skip_optional;
     }
-    depth = _PyLong_AsInt(args[0]);
+    depth = PyLong_AsInt(args[0]);
     if (depth == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1124,7 +1155,7 @@ PyDoc_STRVAR(sys__stats_on__doc__,
 "_stats_on($module, /)\n"
 "--\n"
 "\n"
-"Turns on stats gathering (stats gathering is on by default).");
+"Turns on stats gathering (stats gathering is off by default).");
 
 #define SYS__STATS_ON_METHODDEF    \
     {"_stats_on", (PyCFunction)sys__stats_on, METH_NOARGS, sys__stats_on__doc__},
@@ -1146,7 +1177,7 @@ PyDoc_STRVAR(sys__stats_off__doc__,
 "_stats_off($module, /)\n"
 "--\n"
 "\n"
-"Turns off stats gathering (stats gathering is on by default).");
+"Turns off stats gathering (stats gathering is off by default).");
 
 #define SYS__STATS_OFF_METHODDEF    \
     {"_stats_off", (PyCFunction)sys__stats_off, METH_NOARGS, sys__stats_off__doc__},
@@ -1190,18 +1221,30 @@ PyDoc_STRVAR(sys__stats_dump__doc__,
 "_stats_dump($module, /)\n"
 "--\n"
 "\n"
-"Dump stats to file, and clears the stats.");
+"Dump stats to file, and clears the stats.\n"
+"\n"
+"Return False if no statistics were not dumped because stats gathering was off.");
 
 #define SYS__STATS_DUMP_METHODDEF    \
     {"_stats_dump", (PyCFunction)sys__stats_dump, METH_NOARGS, sys__stats_dump__doc__},
 
-static PyObject *
+static int
 sys__stats_dump_impl(PyObject *module);
 
 static PyObject *
 sys__stats_dump(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
-    return sys__stats_dump_impl(module);
+    PyObject *return_value = NULL;
+    int _return_value;
+
+    _return_value = sys__stats_dump_impl(module);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    return return_value;
 }
 
 #endif /* defined(Py_STATS) */
@@ -1361,7 +1404,7 @@ sys__getframemodulename(PyObject *module, PyObject *const *args, Py_ssize_t narg
     if (!noptargs) {
         goto skip_optional_pos;
     }
-    depth = _PyLong_AsInt(args[0]);
+    depth = PyLong_AsInt(args[0]);
     if (depth == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -1372,6 +1415,34 @@ sys__getframemodulename(PyObject *module, PyObject *const *args, Py_ssize_t narg
     return return_value;
 }
 
+PyDoc_STRVAR(sys__get_cpu_count_config__doc__,
+"_get_cpu_count_config($module, /)\n"
+"--\n"
+"\n"
+"Private function for getting PyConfig.cpu_count");
+
+#define SYS__GET_CPU_COUNT_CONFIG_METHODDEF    \
+    {"_get_cpu_count_config", (PyCFunction)sys__get_cpu_count_config, METH_NOARGS, sys__get_cpu_count_config__doc__},
+
+static int
+sys__get_cpu_count_config_impl(PyObject *module);
+
+static PyObject *
+sys__get_cpu_count_config(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *return_value = NULL;
+    int _return_value;
+
+    _return_value = sys__get_cpu_count_config_impl(module);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
 #ifndef SYS_GETWINDOWSVERSION_METHODDEF
     #define SYS_GETWINDOWSVERSION_METHODDEF
 #endif /* !defined(SYS_GETWINDOWSVERSION_METHODDEF) */
@@ -1415,4 +1486,4 @@ sys__getframemodulename(PyObject *module, PyObject *const *args, Py_ssize_t narg
 #ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
     #define SYS_GETANDROIDAPILEVEL_METHODDEF
 #endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
-/*[clinic end generated code: output=6d598acc26237fbe input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3dc3b2cb0ce38ebb input=a9049054013a1b77]*/
diff --git a/Python/clinic/traceback.c.h b/Python/clinic/traceback.c.h
index 3c344934971643..aee08d6ad97047 100644
--- a/Python/clinic/traceback.c.h
+++ b/Python/clinic/traceback.c.h
@@ -3,10 +3,10 @@ preserve
 [clinic start generated code]*/
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#  include "pycore_gc.h"            // PyGC_Head
-#  include "pycore_runtime.h"       // _Py_ID()
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
 #endif
-
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(tb_new__doc__,
 "TracebackType(tb_next, tb_frame, tb_lasti, tb_lineno)\n"
@@ -65,11 +65,11 @@ tb_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         goto exit;
     }
     tb_frame = (PyFrameObject *)fastargs[1];
-    tb_lasti = _PyLong_AsInt(fastargs[2]);
+    tb_lasti = PyLong_AsInt(fastargs[2]);
     if (tb_lasti == -1 && PyErr_Occurred()) {
         goto exit;
     }
-    tb_lineno = _PyLong_AsInt(fastargs[3]);
+    tb_lineno = PyLong_AsInt(fastargs[3]);
     if (tb_lineno == -1 && PyErr_Occurred()) {
         goto exit;
     }
@@ -78,4 +78,4 @@ tb_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7bc9927e362fdfb7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4e2f6b935841b09c input=a9049054013a1b77]*/
diff --git a/Python/codecs.c b/Python/codecs.c
index 1983f56ba204c1..d8fe7b22063a80 100644
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -11,10 +11,9 @@ Copyright (c) Corporation for National Research Initiatives.
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_interp.h"        // PyInterpreterState.codec_search_path
-#include "pycore_pyerrors.h"       // _PyErr_FormatNote()
+#include "pycore_pyerrors.h"      // _PyErr_FormatNote()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_ucnhash.h"       // _PyUnicode_Name_CAPI
-#include <ctype.h>
 
 const char *Py_hexdigits = "0123456789abcdef";
 
@@ -55,7 +54,7 @@ int PyCodec_Register(PyObject *search_function)
 int
 PyCodec_Unregister(PyObject *search_function)
 {
-    PyInterpreterState *interp = PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     PyObject *codec_search_path = interp->codec_search_path;
     /* Do nothing if codec_search_path is not created yet or was cleared. */
     if (codec_search_path == NULL) {
@@ -147,15 +146,14 @@ PyObject *_PyCodec_Lookup(const char *encoding)
     PyUnicode_InternInPlace(&v);
 
     /* First, try to lookup the name in the registry dictionary */
-    PyObject *result = PyDict_GetItemWithError(interp->codec_search_cache, v);
+    PyObject *result;
+    if (PyDict_GetItemRef(interp->codec_search_cache, v, &result) < 0) {
+        goto onError;
+    }
     if (result != NULL) {
-        Py_INCREF(result);
         Py_DECREF(v);
         return result;
     }
-    else if (PyErr_Occurred()) {
-        goto onError;
-    }
 
     /* Next, scan the search functions in order of registration */
     const Py_ssize_t len = PyList_Size(interp->codec_search_path);
@@ -516,7 +514,7 @@ PyObject * _PyCodec_LookupTextEncoding(const char *encoding,
      * attribute.
      */
     if (!PyTuple_CheckExact(codec)) {
-        if (_PyObject_LookupAttr(codec, &_Py_ID(_is_text_encoding), &attr) < 0) {
+        if (PyObject_GetOptionalAttr(codec, &_Py_ID(_is_text_encoding), &attr) < 0) {
             Py_DECREF(codec);
             return NULL;
         }
@@ -617,20 +615,19 @@ int PyCodec_RegisterError(const char *name, PyObject *error)
    the error handling callback for strict encoding will be returned. */
 PyObject *PyCodec_LookupError(const char *name)
 {
-    PyObject *handler = NULL;
-
     PyInterpreterState *interp = _PyInterpreterState_GET();
     if (interp->codec_search_path == NULL && _PyCodecRegistry_Init())
         return NULL;
 
     if (name==NULL)
         name = "strict";
-    handler = _PyDict_GetItemStringWithError(interp->codec_error_registry, name);
-    if (handler) {
-        Py_INCREF(handler);
+    PyObject *handler;
+    if (PyDict_GetItemStringRef(interp->codec_error_registry, name, &handler) < 0) {
+        return NULL;
     }
-    else if (!PyErr_Occurred()) {
+    if (handler == NULL) {
         PyErr_Format(PyExc_LookupError, "unknown error handler name '%.400s'", name);
+        return NULL;
     }
     return handler;
 }
@@ -934,8 +931,6 @@ PyObject *PyCodec_BackslashReplaceErrors(PyObject *exc)
     return Py_BuildValue("(Nn)", res, end);
 }
 
-static _PyUnicode_Name_CAPI *ucnhash_capi = NULL;
-
 PyObject *PyCodec_NameReplaceErrors(PyObject *exc)
 {
     if (PyObject_TypeCheck(exc, (PyTypeObject *)PyExc_UnicodeEncodeError)) {
@@ -956,13 +951,9 @@ PyObject *PyCodec_NameReplaceErrors(PyObject *exc)
             return NULL;
         if (!(object = PyUnicodeEncodeError_GetObject(exc)))
             return NULL;
-        if (!ucnhash_capi) {
-            /* load the unicode data module */
-            ucnhash_capi = (_PyUnicode_Name_CAPI *)PyCapsule_Import(
-                                            PyUnicodeData_CAPSULE_NAME, 1);
-            if (!ucnhash_capi) {
-                return NULL;
-            }
+        _PyUnicode_Name_CAPI *ucnhash_capi = _PyUnicode_GetNameCAPI();
+        if (ucnhash_capi == NULL) {
+            return NULL;
         }
         for (i = start, ressize = 0; i < end; ++i) {
             /* object is guaranteed to be "ready" */
diff --git a/Python/compile.c b/Python/compile.c
index f8d0197e9f0682..8b9e2f02048f11 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -24,23 +24,23 @@
 #include <stdbool.h>
 
 #include "Python.h"
+#include "opcode.h"
 #include "pycore_ast.h"           // _PyAST_GetDocString()
 #define NEED_OPCODE_TABLES
 #include "pycore_opcode_utils.h"
 #undef NEED_OPCODE_TABLES
-#include "pycore_flowgraph.h"
 #include "pycore_code.h"          // _PyCode_New()
 #include "pycore_compile.h"
+#include "pycore_flowgraph.h"
 #include "pycore_intrinsics.h"
 #include "pycore_long.h"          // _PyLong_GetZero()
-#include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
+#include "pycore_pystate.h"       // _Py_GetConfig()
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "pycore_symtable.h"      // PySTEntryObject, _PyFuture_FromAST()
 
-#include "opcode_metadata.h"      // _PyOpcode_opcode_metadata, _PyOpcode_num_popped/pushed
-
-#define DEFAULT_CODE_SIZE 128
-#define DEFAULT_LNOTAB_SIZE 16
-#define DEFAULT_CNOTAB_SIZE 32
+#define NEED_OPCODE_METADATA
+#include "pycore_opcode_metadata.h" // _PyOpcode_opcode_metadata, _PyOpcode_num_popped/pushed
+#undef NEED_OPCODE_METADATA
 
 #define COMP_GENEXP   0
 #define COMP_LISTCOMP 1
@@ -66,29 +66,12 @@
         return ERROR;       \
     }
 
-/* If we exceed this limit, it should
- * be considered a compiler bug.
- * Currently it should be impossible
- * to exceed STACK_USE_GUIDELINE * 100,
- * as 100 is the maximum parse depth.
- * For performance reasons we will
- * want to reduce this to a
- * few hundred in the future.
- *
- * NOTE: Whatever MAX_ALLOWED_STACK_USE is
- * set to, it should never restrict what Python
- * we can write, just how we compile it.
- */
-#define MAX_ALLOWED_STACK_USE (STACK_USE_GUIDELINE * 100)
-
 #define IS_TOP_LEVEL_AWAIT(C) ( \
         ((C)->c_flags.cf_flags & PyCF_ALLOW_TOP_LEVEL_AWAIT) \
         && ((C)->u->u_ste->ste_type == ModuleBlock))
 
 typedef _PyCompilerSrcLocation location;
-typedef _PyCfgInstruction cfg_instr;
-typedef _PyCfgBasicblock basicblock;
-typedef _PyCfgBuilder cfg_builder;
+typedef struct _PyCfgBuilder cfg_builder;
 
 #define LOCATION(LNO, END_LNO, COL, END_COL) \
     ((const _PyCompilerSrcLocation){(LNO), (END_LNO), (COL), (END_COL)})
@@ -117,7 +100,7 @@ static jump_target_label NO_LABEL = {-1};
     }
 
 #define USE_LABEL(C, LBL) \
-    RETURN_IF_ERROR(instr_sequence_use_label(INSTR_SEQUENCE(C), (LBL).id))
+    RETURN_IF_ERROR(_PyCompile_InstructionSequence_UseLabel(INSTR_SEQUENCE(C), (LBL).id))
 
 
 /* fblockinfo tracks the current frame block.
@@ -147,19 +130,10 @@ enum {
     COMPILER_SCOPE_ASYNC_FUNCTION,
     COMPILER_SCOPE_LAMBDA,
     COMPILER_SCOPE_COMPREHENSION,
+    COMPILER_SCOPE_TYPEPARAMS,
 };
 
 
-int
-_PyCompile_InstrSize(int opcode, int oparg)
-{
-    assert(!IS_PSEUDO_OPCODE(opcode));
-    assert(HAS_ARG(opcode) || oparg == 0);
-    int extended_args = (0xFFFFFF < oparg) + (0xFFFF < oparg) + (0xFF < oparg);
-    int caches = _PyOpcode_Caches[opcode];
-    return extended_args + 1 + caches;
-}
-
 typedef _PyCompile_Instruction instruction;
 typedef _PyCompile_InstructionSequence instr_sequence;
 
@@ -231,6 +205,7 @@ instr_sequence_next_inst(instr_sequence *seq) {
                                           &seq->s_allocated,
                                           INITIAL_INSTR_SEQUENCE_SIZE,
                                           sizeof(instruction)));
+    assert(seq->s_allocated >= 0);
     assert(seq->s_used < seq->s_allocated);
     return seq->s_used++;
 }
@@ -242,8 +217,9 @@ instr_sequence_new_label(instr_sequence *seq)
     return lbl;
 }
 
-static int
-instr_sequence_use_label(instr_sequence *seq, int lbl) {
+int
+_PyCompile_InstructionSequence_UseLabel(instr_sequence *seq, int lbl)
+{
     int old_size = seq->s_labelmap_size;
     RETURN_IF_ERROR(
         _PyCompile_EnsureArrayLargeEnough(lbl,
@@ -259,11 +235,16 @@ instr_sequence_use_label(instr_sequence *seq, int lbl) {
     return SUCCESS;
 }
 
-static int
-instr_sequence_addop(instr_sequence *seq, int opcode, int oparg, location loc)
+
+#define MAX_OPCODE 511
+
+int
+_PyCompile_InstructionSequence_Addop(instr_sequence *seq, int opcode, int oparg,
+                                     location loc)
 {
+    assert(0 <= opcode && opcode <= MAX_OPCODE);
     assert(IS_WITHIN_OPCODE_RANGE(opcode));
-    assert(HAS_ARG(opcode) || HAS_TARGET(opcode) || oparg == 0);
+    assert(OPCODE_HAS_ARG(opcode) || HAS_TARGET(opcode) || oparg == 0);
     assert(0 <= oparg && oparg < (1 << 30));
 
     int idx = instr_sequence_next_inst(seq);
@@ -308,10 +289,12 @@ instr_sequence_fini(instr_sequence *seq) {
     seq->s_instrs = NULL;
 }
 
-static int
-instr_sequence_to_cfg(instr_sequence *seq, cfg_builder *g) {
-    memset(g, 0, sizeof(cfg_builder));
-    RETURN_IF_ERROR(_PyCfgBuilder_Init(g));
+static cfg_builder*
+instr_sequence_to_cfg(instr_sequence *seq) {
+    cfg_builder *g = _PyCfgBuilder_New();
+    if (g == NULL) {
+        return NULL;
+    }
 
     /* There can be more than one label for the same offset. The
      * offset2lbl maping selects one of them which we use consistently.
@@ -320,7 +303,7 @@ instr_sequence_to_cfg(instr_sequence *seq, cfg_builder *g) {
     int *offset2lbl = PyMem_Malloc(seq->s_used * sizeof(int));
     if (offset2lbl == NULL) {
         PyErr_NoMemory();
-        return ERROR;
+        goto error;
     }
     for (int i = 0; i < seq->s_used; i++) {
         offset2lbl[i] = -1;
@@ -356,23 +339,17 @@ instr_sequence_to_cfg(instr_sequence *seq, cfg_builder *g) {
             goto error;
         }
     }
-    PyMem_Free(offset2lbl);
-
-    int nblocks = 0;
-    for (basicblock *b = g->g_block_list; b != NULL; b = b->b_list) {
-        nblocks++;
-    }
-    if ((size_t)nblocks > SIZE_MAX / sizeof(basicblock *)) {
-        PyErr_NoMemory();
-        return ERROR;
+    if (_PyCfgBuilder_CheckSize(g) < 0) {
+        goto error;
     }
-    return SUCCESS;
+    PyMem_Free(offset2lbl);
+    return g;
 error:
+    _PyCfgBuilder_Free(g);
     PyMem_Free(offset2lbl);
-    return ERROR;
+    return NULL;
 }
 
-
 /* The following items change on entry and exit of code blocks.
    They must be saved and restored when returning to a block.
 */
@@ -386,6 +363,8 @@ struct compiler_unit {
     instr_sequence u_instr_sequence; /* codegen output */
 
     int u_nfblocks;
+    int u_in_inlined_comp;
+
     struct fblockinfo u_fblock[CO_MAXBLOCKS];
 
     _PyCompile_CodeUnitMetadata u_metadata;
@@ -506,8 +485,10 @@ static PyCodeObject *optimize_and_assemble(struct compiler *, int addNone);
 
 static int
 compiler_setup(struct compiler *c, mod_ty mod, PyObject *filename,
-               PyCompilerFlags flags, int optimize, PyArena *arena)
+               PyCompilerFlags *flags, int optimize, PyArena *arena)
 {
+    PyCompilerFlags local_flags = _PyCompilerFlags_INIT;
+
     c->c_const_cache = PyDict_New();
     if (!c->c_const_cache) {
         return ERROR;
@@ -523,18 +504,17 @@ compiler_setup(struct compiler *c, mod_ty mod, PyObject *filename,
     if (!_PyFuture_FromAST(mod, filename, &c->c_future)) {
         return ERROR;
     }
-    int merged = c->c_future.ff_features | flags.cf_flags;
+    if (!flags) {
+        flags = &local_flags;
+    }
+    int merged = c->c_future.ff_features | flags->cf_flags;
     c->c_future.ff_features = merged;
-    flags.cf_flags = merged;
-    c->c_flags = flags;
+    flags->cf_flags = merged;
+    c->c_flags = *flags;
     c->c_optimize = (optimize == -1) ? _Py_GetConfig()->optimization_level : optimize;
     c->c_nestlevel = 0;
 
-    _PyASTOptimizeState state;
-    state.optimize = c->c_optimize;
-    state.ff_features = merged;
-
-    if (!_PyAST_Optimize(mod, arena, &state)) {
+    if (!_PyAST_Optimize(mod, arena, c->c_optimize, merged)) {
         return ERROR;
     }
     c->c_st = _PySymtable_Build(mod, filename, &c->c_future);
@@ -551,12 +531,11 @@ static struct compiler*
 new_compiler(mod_ty mod, PyObject *filename, PyCompilerFlags *pflags,
              int optimize, PyArena *arena)
 {
-    PyCompilerFlags flags = pflags ? *pflags : _PyCompilerFlags_INIT;
     struct compiler *c = PyMem_Calloc(1, sizeof(struct compiler));
     if (c == NULL) {
         return NULL;
     }
-    if (compiler_setup(c, mod, filename, flags, optimize, arena) < 0) {
+    if (compiler_setup(c, mod, filename, pflags, optimize, arena) < 0) {
         compiler_free(c);
         return NULL;
     }
@@ -567,6 +546,7 @@ PyCodeObject *
 _PyAST_Compile(mod_ty mod, PyObject *filename, PyCompilerFlags *pflags,
                int optimize, PyArena *arena)
 {
+    assert(!PyErr_Occurred());
     struct compiler *c = new_compiler(mod, filename, pflags, optimize, arena);
     if (c == NULL) {
         return NULL;
@@ -578,6 +558,24 @@ _PyAST_Compile(mod_ty mod, PyObject *filename, PyCompilerFlags *pflags,
     return co;
 }
 
+int
+_PyCompile_AstOptimize(mod_ty mod, PyObject *filename, PyCompilerFlags *cf,
+                       int optimize, PyArena *arena)
+{
+    PyFutureFeatures future;
+    if (!_PyFuture_FromAST(mod, filename, &future)) {
+        return -1;
+    }
+    int flags = future.ff_features | cf->cf_flags;
+    if (optimize == -1) {
+        optimize = _Py_GetConfig()->optimization_level;
+    }
+    if (!_PyAST_Optimize(mod, arena, optimize, flags)) {
+        return -1;
+    }
+    return 0;
+}
+
 static void
 compiler_free(struct compiler *c)
 {
@@ -713,6 +711,19 @@ compiler_set_qualname(struct compiler *c)
         capsule = PyList_GET_ITEM(c->c_stack, stack_size - 1);
         parent = (struct compiler_unit *)PyCapsule_GetPointer(capsule, CAPSULE_NAME);
         assert(parent);
+        if (parent->u_scope_type == COMPILER_SCOPE_TYPEPARAMS) {
+            /* The parent is a type parameter scope, so we need to
+               look at the grandparent. */
+            if (stack_size == 2) {
+                // If we're immediately within the module, we can skip
+                // the rest and just set the qualname to be the same as name.
+                u->u_metadata.u_qualname = Py_NewRef(u->u_metadata.u_name);
+                return SUCCESS;
+            }
+            capsule = PyList_GET_ITEM(c->c_stack, stack_size - 2);
+            parent = (struct compiler_unit *)PyCapsule_GetPointer(capsule, CAPSULE_NAME);
+            assert(parent);
+        }
 
         if (u->u_scope_type == COMPILER_SCOPE_FUNCTION
             || u->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION
@@ -823,6 +834,9 @@ stack_effect(int opcode, int oparg, int jump)
         case JUMP_NO_INTERRUPT:
             return 0;
 
+        case EXIT_INIT_CHECK:
+            return -1;
+
         /* Exception handling pseudo-instructions */
         case SETUP_FINALLY:
             /* 0 in the normal flow.
@@ -841,6 +855,8 @@ stack_effect(int opcode, int oparg, int jump)
 
         case STORE_FAST_MAYBE_NULL:
             return -1;
+        case LOAD_CLOSURE:
+            return 1;
         case LOAD_METHOD:
             return 1;
         case LOAD_SUPER_METHOD:
@@ -866,12 +882,60 @@ PyCompile_OpcodeStackEffect(int opcode, int oparg)
     return stack_effect(opcode, oparg, -1);
 }
 
+int
+_PyCompile_OpcodeIsValid(int opcode)
+{
+    return IS_VALID_OPCODE(opcode);
+}
+
+int
+_PyCompile_OpcodeHasArg(int opcode)
+{
+    return OPCODE_HAS_ARG(opcode);
+}
+
+int
+_PyCompile_OpcodeHasConst(int opcode)
+{
+    return OPCODE_HAS_CONST(opcode);
+}
+
+int
+_PyCompile_OpcodeHasName(int opcode)
+{
+    return OPCODE_HAS_NAME(opcode);
+}
+
+int
+_PyCompile_OpcodeHasJump(int opcode)
+{
+    return OPCODE_HAS_JUMP(opcode);
+}
+
+int
+_PyCompile_OpcodeHasFree(int opcode)
+{
+    return OPCODE_HAS_FREE(opcode);
+}
+
+int
+_PyCompile_OpcodeHasLocal(int opcode)
+{
+    return OPCODE_HAS_LOCAL(opcode);
+}
+
+int
+_PyCompile_OpcodeHasExc(int opcode)
+{
+    return IS_BLOCK_PUSH_OPCODE(opcode);
+}
+
 static int
 codegen_addop_noarg(instr_sequence *seq, int opcode, location loc)
 {
-    assert(!HAS_ARG(opcode));
+    assert(!OPCODE_HAS_ARG(opcode));
     assert(!IS_ASSEMBLER_OPCODE(opcode));
-    return instr_sequence_addop(seq, opcode, 0, loc);
+    return _PyCompile_InstructionSequence_Addop(seq, opcode, 0, loc);
 }
 
 static Py_ssize_t
@@ -906,10 +970,10 @@ static PyObject*
 merge_consts_recursive(PyObject *const_cache, PyObject *o)
 {
     assert(PyDict_CheckExact(const_cache));
-    // None and Ellipsis are singleton, and key is the singleton.
+    // None and Ellipsis are immortal objects, and key is the singleton.
     // No need to merge object and key.
     if (o == Py_None || o == Py_Ellipsis) {
-        return Py_NewRef(o);
+        return o;
     }
 
     PyObject *key = _PyCode_ConstantKey(o);
@@ -1061,6 +1125,7 @@ compiler_addop_name(struct compiler_unit *u, location loc,
         arg <<= 1;
     }
     if (opcode == LOAD_METHOD) {
+        assert(SAME_OPCODE_METADATA(LOAD_METHOD, LOAD_ATTR));
         opcode = LOAD_ATTR;
         arg <<= 1;
         arg |= 1;
@@ -1070,15 +1135,18 @@ compiler_addop_name(struct compiler_unit *u, location loc,
         arg |= 2;
     }
     if (opcode == LOAD_SUPER_METHOD) {
+        assert(SAME_OPCODE_METADATA(LOAD_SUPER_METHOD, LOAD_SUPER_ATTR));
         opcode = LOAD_SUPER_ATTR;
         arg <<= 2;
         arg |= 3;
     }
     if (opcode == LOAD_ZERO_SUPER_ATTR) {
+        assert(SAME_OPCODE_METADATA(LOAD_ZERO_SUPER_ATTR, LOAD_SUPER_ATTR));
         opcode = LOAD_SUPER_ATTR;
         arg <<= 2;
     }
     if (opcode == LOAD_ZERO_SUPER_METHOD) {
+        assert(SAME_OPCODE_METADATA(LOAD_ZERO_SUPER_METHOD, LOAD_SUPER_ATTR));
         opcode = LOAD_SUPER_ATTR;
         arg <<= 2;
         arg |= 1;
@@ -1100,7 +1168,7 @@ codegen_addop_i(instr_sequence *seq, int opcode, Py_ssize_t oparg, location loc)
 
     int oparg_ = Py_SAFE_DOWNCAST(oparg, Py_ssize_t, int);
     assert(!IS_ASSEMBLER_OPCODE(opcode));
-    return instr_sequence_addop(seq, opcode, oparg_, loc);
+    return _PyCompile_InstructionSequence_Addop(seq, opcode, oparg_, loc);
 }
 
 static int
@@ -1108,21 +1176,23 @@ codegen_addop_j(instr_sequence *seq, location loc,
                 int opcode, jump_target_label target)
 {
     assert(IS_LABEL(target));
-    assert(IS_JUMP_OPCODE(opcode) || IS_BLOCK_PUSH_OPCODE(opcode));
+    assert(OPCODE_HAS_JUMP(opcode) || IS_BLOCK_PUSH_OPCODE(opcode));
     assert(!IS_ASSEMBLER_OPCODE(opcode));
-    return instr_sequence_addop(seq, opcode, target.id, loc);
+    return _PyCompile_InstructionSequence_Addop(seq, opcode, target.id, loc);
 }
 
-#define ADDOP(C, LOC, OP) \
-    RETURN_IF_ERROR(codegen_addop_noarg(INSTR_SEQUENCE(C), (OP), (LOC)))
-
-#define ADDOP_IN_SCOPE(C, LOC, OP) { \
-    if (codegen_addop_noarg(INSTR_SEQUENCE(C), (OP), (LOC)) < 0) { \
-        compiler_exit_scope(C); \
+#define RETURN_IF_ERROR_IN_SCOPE(C, CALL) { \
+    if ((CALL) < 0) { \
+        compiler_exit_scope((C)); \
         return ERROR; \
     } \
 }
 
+#define ADDOP(C, LOC, OP) \
+    RETURN_IF_ERROR(codegen_addop_noarg(INSTR_SEQUENCE(C), (OP), (LOC)))
+
+#define ADDOP_IN_SCOPE(C, LOC, OP) RETURN_IF_ERROR_IN_SCOPE((C), codegen_addop_noarg(INSTR_SEQUENCE(C), (OP), (LOC)))
+
 #define ADDOP_LOAD_CONST(C, LOC, O) \
     RETURN_IF_ERROR(compiler_addop_load_const((C)->c_const_cache, (C)->u, (LOC), (O)))
 
@@ -1140,7 +1210,7 @@ codegen_addop_j(instr_sequence *seq, location loc,
 }
 
 #define ADDOP_N(C, LOC, OP, O, TYPE) { \
-    assert(!HAS_CONST(OP)); /* use ADDOP_LOAD_CONST_NEW */ \
+    assert(!OPCODE_HAS_CONST(OP)); /* use ADDOP_LOAD_CONST_NEW */ \
     if (compiler_addop_o((C)->u, (LOC), (OP), (C)->u->u_metadata.u_ ## TYPE, (O)) < 0) { \
         Py_DECREF((O)); \
         return ERROR; \
@@ -1182,12 +1252,8 @@ codegen_addop_j(instr_sequence *seq, location loc,
 #define VISIT(C, TYPE, V) \
     RETURN_IF_ERROR(compiler_visit_ ## TYPE((C), (V)));
 
-#define VISIT_IN_SCOPE(C, TYPE, V) {\
-    if (compiler_visit_ ## TYPE((C), (V)) < 0) { \
-        compiler_exit_scope(C); \
-        return ERROR; \
-    } \
-}
+#define VISIT_IN_SCOPE(C, TYPE, V) \
+    RETURN_IF_ERROR_IN_SCOPE((C), compiler_visit_ ## TYPE((C), (V)))
 
 #define VISIT_SEQ(C, TYPE, SEQ) { \
     int _i; \
@@ -1229,15 +1295,19 @@ compiler_enter_scope(struct compiler *c, identifier name,
     u->u_metadata.u_argcount = 0;
     u->u_metadata.u_posonlyargcount = 0;
     u->u_metadata.u_kwonlyargcount = 0;
-    u->u_ste = PySymtable_Lookup(c->c_st, key);
+    u->u_ste = _PySymtable_Lookup(c->c_st, key);
     if (!u->u_ste) {
         compiler_unit_free(u);
         return ERROR;
     }
     u->u_metadata.u_name = Py_NewRef(name);
     u->u_metadata.u_varnames = list2dict(u->u_ste->ste_varnames);
-    u->u_metadata.u_cellvars = dictbytype(u->u_ste->ste_symbols, CELL, 0, 0);
-    if (!u->u_metadata.u_varnames || !u->u_metadata.u_cellvars) {
+    if (!u->u_metadata.u_varnames) {
+        compiler_unit_free(u);
+        return ERROR;
+    }
+    u->u_metadata.u_cellvars = dictbytype(u->u_ste->ste_symbols, CELL, DEF_COMP_CELL, 0);
+    if (!u->u_metadata.u_cellvars) {
         compiler_unit_free(u);
         return ERROR;
     }
@@ -1251,6 +1321,16 @@ compiler_enter_scope(struct compiler *c, identifier name,
             return ERROR;
         }
     }
+    if (u->u_ste->ste_needs_classdict) {
+        /* Cook up an implicit __classdict__ cell. */
+        Py_ssize_t res;
+        assert(u->u_scope_type == COMPILER_SCOPE_CLASS);
+        res = dict_add_o(u->u_metadata.u_cellvars, &_Py_ID(__classdict__));
+        if (res < 0) {
+            compiler_unit_free(u);
+            return ERROR;
+        }
+    }
 
     u->u_metadata.u_freevars = dictbytype(u->u_ste->ste_symbols, FREE, DEF_FREE_CLASS,
                                PyDict_GET_SIZE(u->u_metadata.u_cellvars));
@@ -1266,6 +1346,7 @@ compiler_enter_scope(struct compiler *c, identifier name,
     }
 
     u->u_nfblocks = 0;
+    u->u_in_inlined_comp = 0;
     u->u_metadata.u_firstlineno = lineno;
     u->u_metadata.u_consts = PyDict_New();
     if (!u->u_metadata.u_consts) {
@@ -1301,7 +1382,7 @@ compiler_enter_scope(struct compiler *c, identifier name,
     else {
         RETURN_IF_ERROR(compiler_set_qualname(c));
     }
-    ADDOP_I(c, loc, RESUME, 0);
+    ADDOP_I(c, loc, RESUME, RESUME_AT_FUNC_START);
 
     if (u->u_scope_type == COMPILER_SCOPE_MODULE) {
         loc.lineno = -1;
@@ -1325,8 +1406,8 @@ compiler_exit_scope(struct compiler *c)
         assert(c->u);
         /* we are deleting from a list so this really shouldn't fail */
         if (PySequence_DelItem(c->c_stack, n) < 0) {
-            _PyErr_WriteUnraisableMsg("on removing the last compiler "
-                                      "stack item", NULL);
+            PyErr_FormatUnraisable("Exception ignored on removing "
+                                   "the last compiler stack item");
         }
     }
     else {
@@ -1395,8 +1476,18 @@ find_ann(asdl_stmt_seq *stmts)
                   find_ann(st->v.TryStar.finalbody) ||
                   find_ann(st->v.TryStar.orelse);
             break;
+        case Match_kind:
+            for (j = 0; j < asdl_seq_LEN(st->v.Match.cases); j++) {
+                match_case_ty match_case = (match_case_ty)asdl_seq_GET(
+                    st->v.Match.cases, j);
+                if (find_ann(match_case->body)) {
+                    return true;
+                }
+            }
+            break;
         default:
             res = false;
+            break;
         }
         if (res) {
             break;
@@ -1458,9 +1549,9 @@ compiler_add_yield_from(struct compiler *c, location loc, int await)
     // Set up a virtual try/except to handle when StopIteration is raised during
     // a close or throw call. The only way YIELD_VALUE raises if they do!
     ADDOP_JUMP(c, loc, SETUP_FINALLY, fail);
-    ADDOP_I(c, loc, YIELD_VALUE, 0);
+    ADDOP_I(c, loc, YIELD_VALUE, 1);
     ADDOP(c, NO_LOCATION, POP_BLOCK);
-    ADDOP_I(c, loc, RESUME, await ? 3 : 2);
+    ADDOP_I(c, loc, RESUME, await ? RESUME_AFTER_AWAIT : RESUME_AFTER_YIELD_FROM);
     ADDOP_JUMP(c, loc, JUMP_NO_INTERRUPT, send);
 
     USE_LABEL(c, fail);
@@ -1647,10 +1738,16 @@ compiler_body(struct compiler *c, location loc, asdl_stmt_seq *stmts)
     if (c->c_optimize < 2) {
         docstring = _PyAST_GetDocString(stmts);
         if (docstring) {
+            PyObject *cleandoc = _PyCompile_CleanDoc(docstring);
+            if (cleandoc == NULL) {
+                return ERROR;
+            }
             i = 1;
             st = (stmt_ty)asdl_seq_GET(stmts, 0);
             assert(st->kind == Expr_kind);
-            VISIT(c, expr, st->v.Expr.value);
+            location loc = LOC(st->v.Expr.value);
+            ADDOP_LOAD_CONST(c, loc, cleandoc);
+            Py_DECREF(cleandoc);
             RETURN_IF_ERROR(compiler_nameop(c, NO_LOCATION, &_Py_ID(__doc__), Store));
         }
     }
@@ -1717,8 +1814,10 @@ get_ref_type(struct compiler *c, PyObject *name)
 {
     int scope;
     if (c->u->u_scope_type == COMPILER_SCOPE_CLASS &&
-        _PyUnicode_EqualToASCIIString(name, "__class__"))
+        (_PyUnicode_EqualToASCIIString(name, "__class__") ||
+         _PyUnicode_EqualToASCIIString(name, "__classdict__"))) {
         return CELL;
+    }
     scope = _PyST_GetScope(c->u->u_ste, name);
     if (scope == 0) {
         PyErr_Format(PyExc_SystemError,
@@ -1790,11 +1889,25 @@ compiler_make_closure(struct compiler *c, location loc,
             }
             ADDOP_I(c, loc, LOAD_CLOSURE, arg);
         }
-        flags |= 0x08;
+        flags |= MAKE_FUNCTION_CLOSURE;
         ADDOP_I(c, loc, BUILD_TUPLE, co->co_nfreevars);
     }
     ADDOP_LOAD_CONST(c, loc, (PyObject*)co);
-    ADDOP_I(c, loc, MAKE_FUNCTION, flags);
+
+    ADDOP(c, loc, MAKE_FUNCTION);
+
+    if (flags & MAKE_FUNCTION_CLOSURE) {
+        ADDOP_I(c, loc, SET_FUNCTION_ATTRIBUTE, MAKE_FUNCTION_CLOSURE);
+    }
+    if (flags & MAKE_FUNCTION_ANNOTATIONS) {
+        ADDOP_I(c, loc, SET_FUNCTION_ATTRIBUTE, MAKE_FUNCTION_ANNOTATIONS);
+    }
+    if (flags & MAKE_FUNCTION_KWDEFAULTS) {
+        ADDOP_I(c, loc, SET_FUNCTION_ATTRIBUTE, MAKE_FUNCTION_KWDEFAULTS);
+    }
+    if (flags & MAKE_FUNCTION_DEFAULTS) {
+        ADDOP_I(c, loc, SET_FUNCTION_ATTRIBUTE, MAKE_FUNCTION_DEFAULTS);
+    }
     return SUCCESS;
 }
 
@@ -2001,7 +2114,7 @@ compiler_default_arguments(struct compiler *c, location loc,
     Py_ssize_t funcflags = 0;
     if (args->defaults && asdl_seq_LEN(args->defaults) > 0) {
         RETURN_IF_ERROR(compiler_visit_defaults(c, args, loc));
-        funcflags |= 0x01;
+        funcflags |= MAKE_FUNCTION_DEFAULTS;
     }
     if (args->kwonlyargs) {
         int res = compiler_visit_kwonlydefaults(c, loc,
@@ -2009,7 +2122,7 @@ compiler_default_arguments(struct compiler *c, location loc,
                                                 args->kw_defaults);
         RETURN_IF_ERROR(res);
         if (res > 0) {
-            funcflags |= 0x02;
+            funcflags |= MAKE_FUNCTION_KWDEFAULTS;
         }
     }
     return funcflags;
@@ -2084,26 +2197,81 @@ wrap_in_stopiteration_handler(struct compiler *c)
 }
 
 static int
-compiler_function(struct compiler *c, stmt_ty s, int is_async)
+compiler_type_params(struct compiler *c, asdl_type_param_seq *type_params)
+{
+    if (!type_params) {
+        return SUCCESS;
+    }
+    Py_ssize_t n = asdl_seq_LEN(type_params);
+
+    for (Py_ssize_t i = 0; i < n; i++) {
+        type_param_ty typeparam = asdl_seq_GET(type_params, i);
+        location loc = LOC(typeparam);
+        switch(typeparam->kind) {
+        case TypeVar_kind:
+            ADDOP_LOAD_CONST(c, loc, typeparam->v.TypeVar.name);
+            if (typeparam->v.TypeVar.bound) {
+                expr_ty bound = typeparam->v.TypeVar.bound;
+                if (compiler_enter_scope(c, typeparam->v.TypeVar.name, COMPILER_SCOPE_TYPEPARAMS,
+                                        (void *)typeparam, bound->lineno) == -1) {
+                    return ERROR;
+                }
+                VISIT_IN_SCOPE(c, expr, bound);
+                ADDOP_IN_SCOPE(c, loc, RETURN_VALUE);
+                PyCodeObject *co = optimize_and_assemble(c, 1);
+                compiler_exit_scope(c);
+                if (co == NULL) {
+                    return ERROR;
+                }
+                if (compiler_make_closure(c, loc, co, 0) < 0) {
+                    Py_DECREF(co);
+                    return ERROR;
+                }
+                Py_DECREF(co);
+
+                int intrinsic = bound->kind == Tuple_kind
+                    ? INTRINSIC_TYPEVAR_WITH_CONSTRAINTS
+                    : INTRINSIC_TYPEVAR_WITH_BOUND;
+                ADDOP_I(c, loc, CALL_INTRINSIC_2, intrinsic);
+            }
+            else {
+                ADDOP_I(c, loc, CALL_INTRINSIC_1, INTRINSIC_TYPEVAR);
+            }
+            ADDOP_I(c, loc, COPY, 1);
+            RETURN_IF_ERROR(compiler_nameop(c, loc, typeparam->v.TypeVar.name, Store));
+            break;
+        case TypeVarTuple_kind:
+            ADDOP_LOAD_CONST(c, loc, typeparam->v.TypeVarTuple.name);
+            ADDOP_I(c, loc, CALL_INTRINSIC_1, INTRINSIC_TYPEVARTUPLE);
+            ADDOP_I(c, loc, COPY, 1);
+            RETURN_IF_ERROR(compiler_nameop(c, loc, typeparam->v.TypeVarTuple.name, Store));
+            break;
+        case ParamSpec_kind:
+            ADDOP_LOAD_CONST(c, loc, typeparam->v.ParamSpec.name);
+            ADDOP_I(c, loc, CALL_INTRINSIC_1, INTRINSIC_PARAMSPEC);
+            ADDOP_I(c, loc, COPY, 1);
+            RETURN_IF_ERROR(compiler_nameop(c, loc, typeparam->v.ParamSpec.name, Store));
+            break;
+        }
+    }
+    ADDOP_I(c, LOC(asdl_seq_GET(type_params, 0)), BUILD_TUPLE, n);
+    return SUCCESS;
+}
+
+static int
+compiler_function_body(struct compiler *c, stmt_ty s, int is_async, Py_ssize_t funcflags,
+                       int firstlineno)
 {
-    PyCodeObject *co;
     PyObject *docstring = NULL;
     arguments_ty args;
-    expr_ty returns;
     identifier name;
-    asdl_expr_seq* decos;
     asdl_stmt_seq *body;
-    Py_ssize_t i, funcflags;
-    int annotations;
     int scope_type;
-    int firstlineno;
 
     if (is_async) {
         assert(s->kind == AsyncFunctionDef_kind);
 
         args = s->v.AsyncFunctionDef.args;
-        returns = s->v.AsyncFunctionDef.returns;
-        decos = s->v.AsyncFunctionDef.decorator_list;
         name = s->v.AsyncFunctionDef.name;
         body = s->v.AsyncFunctionDef.body;
 
@@ -2112,49 +2280,37 @@ compiler_function(struct compiler *c, stmt_ty s, int is_async)
         assert(s->kind == FunctionDef_kind);
 
         args = s->v.FunctionDef.args;
-        returns = s->v.FunctionDef.returns;
-        decos = s->v.FunctionDef.decorator_list;
         name = s->v.FunctionDef.name;
         body = s->v.FunctionDef.body;
 
         scope_type = COMPILER_SCOPE_FUNCTION;
     }
 
-    RETURN_IF_ERROR(compiler_check_debug_args(c, args));
-    RETURN_IF_ERROR(compiler_decorators(c, decos));
-
-    firstlineno = s->lineno;
-    if (asdl_seq_LEN(decos)) {
-        firstlineno = ((expr_ty)asdl_seq_GET(decos, 0))->lineno;
-    }
-
-    location loc = LOC(s);
-    funcflags = compiler_default_arguments(c, loc, args);
-    if (funcflags == -1) {
-        return ERROR;
-    }
-    annotations = compiler_visit_annotations(c, loc, args, returns);
-    RETURN_IF_ERROR(annotations);
-    if (annotations > 0) {
-        funcflags |= 0x04;
-    }
-
     RETURN_IF_ERROR(
         compiler_enter_scope(c, name, scope_type, (void *)s, firstlineno));
 
     /* if not -OO mode, add docstring */
     if (c->c_optimize < 2) {
         docstring = _PyAST_GetDocString(body);
+        if (docstring) {
+            docstring = _PyCompile_CleanDoc(docstring);
+            if (docstring == NULL) {
+                compiler_exit_scope(c);
+                return ERROR;
+            }
+        }
     }
     if (compiler_add_const(c->c_const_cache, c->u, docstring ? docstring : Py_None) < 0) {
+        Py_XDECREF(docstring);
         compiler_exit_scope(c);
         return ERROR;
     }
+    Py_XDECREF(docstring);
 
     c->u->u_metadata.u_argcount = asdl_seq_LEN(args->args);
     c->u->u_metadata.u_posonlyargcount = asdl_seq_LEN(args->posonlyargs);
     c->u->u_metadata.u_kwonlyargcount = asdl_seq_LEN(args->kwonlyargs);
-    for (i = docstring ? 1 : 0; i < asdl_seq_LEN(body); i++) {
+    for (Py_ssize_t i = docstring ? 1 : 0; i < asdl_seq_LEN(body); i++) {
         VISIT_IN_SCOPE(c, stmt, (stmt_ty)asdl_seq_GET(body, i));
     }
     if (c->u->u_ste->ste_coroutine || c->u->u_ste->ste_generator) {
@@ -2163,29 +2319,52 @@ compiler_function(struct compiler *c, stmt_ty s, int is_async)
             return ERROR;
         }
     }
-    co = optimize_and_assemble(c, 1);
+    PyCodeObject *co = optimize_and_assemble(c, 1);
     compiler_exit_scope(c);
     if (co == NULL) {
         Py_XDECREF(co);
         return ERROR;
     }
+    location loc = LOC(s);
     if (compiler_make_closure(c, loc, co, funcflags) < 0) {
         Py_DECREF(co);
         return ERROR;
     }
     Py_DECREF(co);
-
-    RETURN_IF_ERROR(compiler_apply_decorators(c, decos));
-    return compiler_nameop(c, loc, name, Store);
+    return SUCCESS;
 }
 
 static int
-compiler_class(struct compiler *c, stmt_ty s)
+compiler_function(struct compiler *c, stmt_ty s, int is_async)
 {
-    PyCodeObject *co;
-    int i, firstlineno;
-    asdl_expr_seq *decos = s->v.ClassDef.decorator_list;
+    arguments_ty args;
+    expr_ty returns;
+    identifier name;
+    asdl_expr_seq *decos;
+    asdl_type_param_seq *type_params;
+    Py_ssize_t funcflags;
+    int annotations;
+    int firstlineno;
+
+    if (is_async) {
+        assert(s->kind == AsyncFunctionDef_kind);
 
+        args = s->v.AsyncFunctionDef.args;
+        returns = s->v.AsyncFunctionDef.returns;
+        decos = s->v.AsyncFunctionDef.decorator_list;
+        name = s->v.AsyncFunctionDef.name;
+        type_params = s->v.AsyncFunctionDef.type_params;
+    } else {
+        assert(s->kind == FunctionDef_kind);
+
+        args = s->v.FunctionDef.args;
+        returns = s->v.FunctionDef.returns;
+        decos = s->v.FunctionDef.decorator_list;
+        name = s->v.FunctionDef.name;
+        type_params = s->v.FunctionDef.type_params;
+    }
+
+    RETURN_IF_ERROR(compiler_check_debug_args(c, args));
     RETURN_IF_ERROR(compiler_decorators(c, decos));
 
     firstlineno = s->lineno;
@@ -2193,6 +2372,104 @@ compiler_class(struct compiler *c, stmt_ty s)
         firstlineno = ((expr_ty)asdl_seq_GET(decos, 0))->lineno;
     }
 
+    location loc = LOC(s);
+
+    int is_generic = asdl_seq_LEN(type_params) > 0;
+
+    funcflags = compiler_default_arguments(c, loc, args);
+    if (funcflags == -1) {
+        return ERROR;
+    }
+
+    int num_typeparam_args = 0;
+
+    if (is_generic) {
+        if (funcflags & MAKE_FUNCTION_DEFAULTS) {
+            num_typeparam_args += 1;
+        }
+        if (funcflags & MAKE_FUNCTION_KWDEFAULTS) {
+            num_typeparam_args += 1;
+        }
+        if (num_typeparam_args == 2) {
+            ADDOP_I(c, loc, SWAP, 2);
+        }
+        PyObject *type_params_name = PyUnicode_FromFormat("<generic parameters of %U>", name);
+        if (!type_params_name) {
+            return ERROR;
+        }
+        if (compiler_enter_scope(c, type_params_name, COMPILER_SCOPE_TYPEPARAMS,
+                                 (void *)type_params, firstlineno) == -1) {
+            Py_DECREF(type_params_name);
+            return ERROR;
+        }
+        Py_DECREF(type_params_name);
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_type_params(c, type_params));
+        for (int i = 0; i < num_typeparam_args; i++) {
+            RETURN_IF_ERROR_IN_SCOPE(c, codegen_addop_i(INSTR_SEQUENCE(c), LOAD_FAST, i, loc));
+        }
+    }
+
+    annotations = compiler_visit_annotations(c, loc, args, returns);
+    if (annotations < 0) {
+        if (is_generic) {
+            compiler_exit_scope(c);
+        }
+        return ERROR;
+    }
+    if (annotations > 0) {
+        funcflags |= MAKE_FUNCTION_ANNOTATIONS;
+    }
+
+    if (compiler_function_body(c, s, is_async, funcflags, firstlineno) < 0) {
+        if (is_generic) {
+            compiler_exit_scope(c);
+        }
+        return ERROR;
+    }
+
+    if (is_generic) {
+        RETURN_IF_ERROR_IN_SCOPE(c, codegen_addop_i(
+            INSTR_SEQUENCE(c), SWAP, 2, loc));
+        RETURN_IF_ERROR_IN_SCOPE(c, codegen_addop_i(
+            INSTR_SEQUENCE(c), CALL_INTRINSIC_2, INTRINSIC_SET_FUNCTION_TYPE_PARAMS, loc));
+
+        c->u->u_metadata.u_argcount = num_typeparam_args;
+        PyCodeObject *co = optimize_and_assemble(c, 0);
+        compiler_exit_scope(c);
+        if (co == NULL) {
+            return ERROR;
+        }
+        if (compiler_make_closure(c, loc, co, 0) < 0) {
+            Py_DECREF(co);
+            return ERROR;
+        }
+        Py_DECREF(co);
+        if (num_typeparam_args > 0) {
+            ADDOP_I(c, loc, SWAP, num_typeparam_args + 1);
+            ADDOP_I(c, loc, CALL, num_typeparam_args - 1);
+        }
+        else {
+            ADDOP(c, loc, PUSH_NULL);
+            ADDOP_I(c, loc, CALL, 0);
+        }
+    }
+
+    RETURN_IF_ERROR(compiler_apply_decorators(c, decos));
+    return compiler_nameop(c, loc, name, Store);
+}
+
+static int
+compiler_set_type_params_in_class(struct compiler *c, location loc)
+{
+    _Py_DECLARE_STR(type_params, ".type_params");
+    RETURN_IF_ERROR(compiler_nameop(c, loc, &_Py_STR(type_params), Load));
+    RETURN_IF_ERROR(compiler_nameop(c, loc, &_Py_ID(__type_params__), Store));
+    return 1;
+}
+
+static int
+compiler_class_body(struct compiler *c, stmt_ty s, int firstlineno)
+{
     /* ultimately generate code for:
          <name> = __build_class__(<func>, <name>, *<bases>, **<keywords>)
        where:
@@ -2203,92 +2480,299 @@ compiler_class(struct compiler *c, stmt_ty s)
          <keywords> is the keyword arguments and **kwds argument
        This borrows from compiler_call.
     */
+
     /* 1. compile the class body into a code object */
     RETURN_IF_ERROR(
         compiler_enter_scope(c, s->v.ClassDef.name,
                              COMPILER_SCOPE_CLASS, (void *)s, firstlineno));
 
-    /* this block represents what we do in the new scope */
-    {
-        location loc = LOCATION(firstlineno, firstlineno, 0, 0);
-        /* use the class name for name mangling */
-        Py_XSETREF(c->u->u_private, Py_NewRef(s->v.ClassDef.name));
-        /* load (global) __name__ ... */
-        if (compiler_nameop(c, loc, &_Py_ID(__name__), Load) < 0) {
+    location loc = LOCATION(firstlineno, firstlineno, 0, 0);
+    /* use the class name for name mangling */
+    Py_XSETREF(c->u->u_private, Py_NewRef(s->v.ClassDef.name));
+    /* load (global) __name__ ... */
+    if (compiler_nameop(c, loc, &_Py_ID(__name__), Load) < 0) {
+        compiler_exit_scope(c);
+        return ERROR;
+    }
+    /* ... and store it as __module__ */
+    if (compiler_nameop(c, loc, &_Py_ID(__module__), Store) < 0) {
+        compiler_exit_scope(c);
+        return ERROR;
+    }
+    assert(c->u->u_metadata.u_qualname);
+    ADDOP_LOAD_CONST(c, loc, c->u->u_metadata.u_qualname);
+    if (compiler_nameop(c, loc, &_Py_ID(__qualname__), Store) < 0) {
+        compiler_exit_scope(c);
+        return ERROR;
+    }
+    asdl_type_param_seq *type_params = s->v.ClassDef.type_params;
+    if (asdl_seq_LEN(type_params) > 0) {
+        if (!compiler_set_type_params_in_class(c, loc)) {
             compiler_exit_scope(c);
             return ERROR;
         }
-        /* ... and store it as __module__ */
-        if (compiler_nameop(c, loc, &_Py_ID(__module__), Store) < 0) {
+    }
+    if (c->u->u_ste->ste_needs_classdict) {
+        ADDOP(c, loc, LOAD_LOCALS);
+
+        // We can't use compiler_nameop here because we need to generate a
+        // STORE_DEREF in a class namespace, and compiler_nameop() won't do
+        // that by default.
+        PyObject *cellvars = c->u->u_metadata.u_cellvars;
+        if (compiler_addop_o(c->u, loc, STORE_DEREF, cellvars,
+                             &_Py_ID(__classdict__)) < 0) {
             compiler_exit_scope(c);
             return ERROR;
         }
-        assert(c->u->u_metadata.u_qualname);
-        ADDOP_LOAD_CONST(c, loc, c->u->u_metadata.u_qualname);
-        if (compiler_nameop(c, loc, &_Py_ID(__qualname__), Store) < 0) {
+    }
+    /* compile the body proper */
+    if (compiler_body(c, loc, s->v.ClassDef.body) < 0) {
+        compiler_exit_scope(c);
+        return ERROR;
+    }
+    /* The following code is artificial */
+    /* Set __classdictcell__ if necessary */
+    if (c->u->u_ste->ste_needs_classdict) {
+        /* Store __classdictcell__ into class namespace */
+        int i = compiler_lookup_arg(c->u->u_metadata.u_cellvars, &_Py_ID(__classdict__));
+        if (i < 0) {
             compiler_exit_scope(c);
             return ERROR;
         }
-        /* compile the body proper */
-        if (compiler_body(c, loc, s->v.ClassDef.body) < 0) {
+        ADDOP_I(c, NO_LOCATION, LOAD_CLOSURE, i);
+        if (compiler_nameop(c, NO_LOCATION, &_Py_ID(__classdictcell__), Store) < 0) {
             compiler_exit_scope(c);
             return ERROR;
         }
-        /* The following code is artificial */
-        /* Return __classcell__ if it is referenced, otherwise return None */
-        if (c->u->u_ste->ste_needs_class_closure) {
-            /* Store __classcell__ into class namespace & return it */
-            i = compiler_lookup_arg(c->u->u_metadata.u_cellvars, &_Py_ID(__class__));
-            if (i < 0) {
-                compiler_exit_scope(c);
-                return ERROR;
-            }
-            ADDOP_I(c, NO_LOCATION, LOAD_CLOSURE, i);
-            ADDOP_I(c, NO_LOCATION, COPY, 1);
-            if (compiler_nameop(c, NO_LOCATION, &_Py_ID(__classcell__), Store) < 0) {
-                compiler_exit_scope(c);
-                return ERROR;
-            }
+    }
+    /* Return __classcell__ if it is referenced, otherwise return None */
+    if (c->u->u_ste->ste_needs_class_closure) {
+        /* Store __classcell__ into class namespace & return it */
+        int i = compiler_lookup_arg(c->u->u_metadata.u_cellvars, &_Py_ID(__class__));
+        if (i < 0) {
+            compiler_exit_scope(c);
+            return ERROR;
         }
-        else {
-            /* No methods referenced __class__, so just return None */
-            ADDOP_LOAD_CONST(c, NO_LOCATION, Py_None);
+        ADDOP_I(c, NO_LOCATION, LOAD_CLOSURE, i);
+        ADDOP_I(c, NO_LOCATION, COPY, 1);
+        if (compiler_nameop(c, NO_LOCATION, &_Py_ID(__classcell__), Store) < 0) {
+            compiler_exit_scope(c);
+            return ERROR;
         }
-        ADDOP_IN_SCOPE(c, NO_LOCATION, RETURN_VALUE);
-        /* create the code object */
-        co = optimize_and_assemble(c, 1);
     }
+    else {
+        /* No methods referenced __class__, so just return None */
+        ADDOP_LOAD_CONST(c, NO_LOCATION, Py_None);
+    }
+    ADDOP_IN_SCOPE(c, NO_LOCATION, RETURN_VALUE);
+    /* create the code object */
+    PyCodeObject *co = optimize_and_assemble(c, 1);
+
     /* leave the new scope */
     compiler_exit_scope(c);
     if (co == NULL) {
         return ERROR;
     }
 
-    location loc = LOC(s);
     /* 2. load the 'build_class' function */
-    ADDOP(c, loc, PUSH_NULL);
+
+    // these instructions should be attributed to the class line,
+    // not a decorator line
+    loc = LOC(s);
     ADDOP(c, loc, LOAD_BUILD_CLASS);
+    ADDOP(c, loc, PUSH_NULL);
 
     /* 3. load a function (or closure) made from the code object */
     if (compiler_make_closure(c, loc, co, 0) < 0) {
         Py_DECREF(co);
         return ERROR;
     }
-    Py_DECREF(co);
-
-    /* 4. load class name */
-    ADDOP_LOAD_CONST(c, loc, s->v.ClassDef.name);
-
-    /* 5. generate the rest of the code for the call */
-    RETURN_IF_ERROR(compiler_call_helper(c, loc, 2,
-                                         s->v.ClassDef.bases,
-                                         s->v.ClassDef.keywords));
-
-    /* 6. apply decorators */
-    RETURN_IF_ERROR(compiler_apply_decorators(c, decos));
+    Py_DECREF(co);
+
+    /* 4. load class name */
+    ADDOP_LOAD_CONST(c, loc, s->v.ClassDef.name);
+
+    return SUCCESS;
+}
+
+static int
+compiler_class(struct compiler *c, stmt_ty s)
+{
+    asdl_expr_seq *decos = s->v.ClassDef.decorator_list;
+
+    RETURN_IF_ERROR(compiler_decorators(c, decos));
+
+    int firstlineno = s->lineno;
+    if (asdl_seq_LEN(decos)) {
+        firstlineno = ((expr_ty)asdl_seq_GET(decos, 0))->lineno;
+    }
+    location loc = LOC(s);
+
+    asdl_type_param_seq *type_params = s->v.ClassDef.type_params;
+    int is_generic = asdl_seq_LEN(type_params) > 0;
+    if (is_generic) {
+        Py_XSETREF(c->u->u_private, Py_NewRef(s->v.ClassDef.name));
+        PyObject *type_params_name = PyUnicode_FromFormat("<generic parameters of %U>",
+                                                         s->v.ClassDef.name);
+        if (!type_params_name) {
+            return ERROR;
+        }
+        if (compiler_enter_scope(c, type_params_name, COMPILER_SCOPE_TYPEPARAMS,
+                                 (void *)type_params, firstlineno) == -1) {
+            Py_DECREF(type_params_name);
+            return ERROR;
+        }
+        Py_DECREF(type_params_name);
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_type_params(c, type_params));
+        _Py_DECLARE_STR(type_params, ".type_params");
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_nameop(c, loc, &_Py_STR(type_params), Store));
+    }
+
+    if (compiler_class_body(c, s, firstlineno) < 0) {
+        if (is_generic) {
+            compiler_exit_scope(c);
+        }
+        return ERROR;
+    }
+
+    /* generate the rest of the code for the call */
+
+    if (is_generic) {
+        _Py_DECLARE_STR(type_params, ".type_params");
+        _Py_DECLARE_STR(generic_base, ".generic_base");
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_nameop(c, loc, &_Py_STR(type_params), Load));
+        RETURN_IF_ERROR_IN_SCOPE(
+            c, codegen_addop_i(INSTR_SEQUENCE(c), CALL_INTRINSIC_1, INTRINSIC_SUBSCRIPT_GENERIC, loc)
+        )
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_nameop(c, loc, &_Py_STR(generic_base), Store));
+
+        Py_ssize_t original_len = asdl_seq_LEN(s->v.ClassDef.bases);
+        asdl_expr_seq *bases = _Py_asdl_expr_seq_new(
+            original_len + 1, c->c_arena);
+        if (bases == NULL) {
+            compiler_exit_scope(c);
+            return ERROR;
+        }
+        for (Py_ssize_t i = 0; i < original_len; i++) {
+            asdl_seq_SET(bases, i, asdl_seq_GET(s->v.ClassDef.bases, i));
+        }
+        expr_ty name_node = _PyAST_Name(
+            &_Py_STR(generic_base), Load,
+            loc.lineno, loc.col_offset, loc.end_lineno, loc.end_col_offset, c->c_arena
+        );
+        if (name_node == NULL) {
+            compiler_exit_scope(c);
+            return ERROR;
+        }
+        asdl_seq_SET(bases, original_len, name_node);
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_call_helper(c, loc, 2,
+                                                         bases,
+                                                         s->v.ClassDef.keywords));
+
+        PyCodeObject *co = optimize_and_assemble(c, 0);
+        compiler_exit_scope(c);
+        if (co == NULL) {
+            return ERROR;
+        }
+        if (compiler_make_closure(c, loc, co, 0) < 0) {
+            Py_DECREF(co);
+            return ERROR;
+        }
+        Py_DECREF(co);
+        ADDOP(c, loc, PUSH_NULL);
+        ADDOP_I(c, loc, CALL, 0);
+    } else {
+        RETURN_IF_ERROR(compiler_call_helper(c, loc, 2,
+                                            s->v.ClassDef.bases,
+                                            s->v.ClassDef.keywords));
+    }
+
+    /* 6. apply decorators */
+    RETURN_IF_ERROR(compiler_apply_decorators(c, decos));
+
+    /* 7. store into <name> */
+    RETURN_IF_ERROR(compiler_nameop(c, loc, s->v.ClassDef.name, Store));
+    return SUCCESS;
+}
+
+static int
+compiler_typealias_body(struct compiler *c, stmt_ty s)
+{
+    location loc = LOC(s);
+    PyObject *name = s->v.TypeAlias.name->v.Name.id;
+    RETURN_IF_ERROR(
+        compiler_enter_scope(c, name, COMPILER_SCOPE_FUNCTION, s, loc.lineno));
+    /* Make None the first constant, so the evaluate function can't have a
+        docstring. */
+    RETURN_IF_ERROR(compiler_add_const(c->c_const_cache, c->u, Py_None));
+    VISIT_IN_SCOPE(c, expr, s->v.TypeAlias.value);
+    ADDOP_IN_SCOPE(c, loc, RETURN_VALUE);
+    PyCodeObject *co = optimize_and_assemble(c, 0);
+    compiler_exit_scope(c);
+    if (co == NULL) {
+        return ERROR;
+    }
+    if (compiler_make_closure(c, loc, co, 0) < 0) {
+        Py_DECREF(co);
+        return ERROR;
+    }
+    Py_DECREF(co);
+    ADDOP_I(c, loc, BUILD_TUPLE, 3);
+    ADDOP_I(c, loc, CALL_INTRINSIC_1, INTRINSIC_TYPEALIAS);
+    return SUCCESS;
+}
+
+static int
+compiler_typealias(struct compiler *c, stmt_ty s)
+{
+    location loc = LOC(s);
+    asdl_type_param_seq *type_params = s->v.TypeAlias.type_params;
+    int is_generic = asdl_seq_LEN(type_params) > 0;
+    PyObject *name = s->v.TypeAlias.name->v.Name.id;
+    if (is_generic) {
+        PyObject *type_params_name = PyUnicode_FromFormat("<generic parameters of %U>",
+                                                         name);
+        if (!type_params_name) {
+            return ERROR;
+        }
+        if (compiler_enter_scope(c, type_params_name, COMPILER_SCOPE_TYPEPARAMS,
+                                 (void *)type_params, loc.lineno) == -1) {
+            Py_DECREF(type_params_name);
+            return ERROR;
+        }
+        Py_DECREF(type_params_name);
+        RETURN_IF_ERROR_IN_SCOPE(
+            c, compiler_addop_load_const(c->c_const_cache, c->u, loc, name)
+        );
+        RETURN_IF_ERROR_IN_SCOPE(c, compiler_type_params(c, type_params));
+    }
+    else {
+        ADDOP_LOAD_CONST(c, loc, name);
+        ADDOP_LOAD_CONST(c, loc, Py_None);
+    }
+
+    if (compiler_typealias_body(c, s) < 0) {
+        if (is_generic) {
+            compiler_exit_scope(c);
+        }
+        return ERROR;
+    }
 
-    /* 7. store into <name> */
-    RETURN_IF_ERROR(compiler_nameop(c, loc, s->v.ClassDef.name, Store));
+    if (is_generic) {
+        PyCodeObject *co = optimize_and_assemble(c, 0);
+        compiler_exit_scope(c);
+        if (co == NULL) {
+            return ERROR;
+        }
+        if (compiler_make_closure(c, loc, co, 0) < 0) {
+            Py_DECREF(co);
+            return ERROR;
+        }
+        Py_DECREF(co);
+        ADDOP(c, loc, PUSH_NULL);
+        ADDOP_I(c, loc, CALL, 0);
+    }
+    RETURN_IF_ERROR(compiler_nameop(c, loc, name, Store));
     return SUCCESS;
 }
 
@@ -2387,9 +2871,11 @@ static int compiler_addcompare(struct compiler *c, location loc,
     default:
         Py_UNREACHABLE();
     }
-    /* cmp goes in top bits of the oparg, while the low bits are used by quickened
-     * versions of this opcode to store the comparison mask. */
-    ADDOP_I(c, loc, COMPARE_OP, (cmp << 4) | compare_masks[cmp]);
+    // cmp goes in top three bits of the oparg, while the low four bits are used
+    // by quickened versions of this opcode to store the comparison mask. The
+    // fifth-lowest bit indicates whether the result should be converted to bool
+    // and is set later):
+    ADDOP_I(c, loc, COMPARE_OP, (cmp << 5) | compare_masks[cmp]);
     return SUCCESS;
 }
 
@@ -2455,10 +2941,12 @@ compiler_jump_if(struct compiler *c, location loc,
                 ADDOP_I(c, LOC(e), SWAP, 2);
                 ADDOP_I(c, LOC(e), COPY, 2);
                 ADDOP_COMPARE(c, LOC(e), asdl_seq_GET(e->v.Compare.ops, i));
+                ADDOP(c, LOC(e), TO_BOOL);
                 ADDOP_JUMP(c, LOC(e), POP_JUMP_IF_FALSE, cleanup);
             }
             VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Compare.comparators, n));
             ADDOP_COMPARE(c, LOC(e), asdl_seq_GET(e->v.Compare.ops, n));
+            ADDOP(c, LOC(e), TO_BOOL);
             ADDOP_JUMP(c, LOC(e), cond ? POP_JUMP_IF_TRUE : POP_JUMP_IF_FALSE, next);
             NEW_JUMP_TARGET_LABEL(c, end);
             ADDOP_JUMP(c, NO_LOCATION, JUMP, end);
@@ -2482,6 +2970,7 @@ compiler_jump_if(struct compiler *c, location loc,
 
     /* general implementation */
     VISIT(c, expr, e);
+    ADDOP(c, LOC(e), TO_BOOL);
     ADDOP_JUMP(c, LOC(e), cond ? POP_JUMP_IF_TRUE : POP_JUMP_IF_FALSE, next);
     return SUCCESS;
 }
@@ -2704,7 +3193,7 @@ compiler_return(struct compiler *c, stmt_ty s)
     location loc = LOC(s);
     int preserve_tos = ((s->v.Return.value != NULL) &&
                         (s->v.Return.value->kind != Constant_kind));
-    if (c->u->u_ste->ste_type != FunctionBlock) {
+    if (!_PyST_IsFunctionLike(c->u->u_ste)) {
         return compiler_error(c, loc, "'return' outside function");
     }
     if (s->v.Return.value != NULL &&
@@ -2771,18 +3260,6 @@ compiler_continue(struct compiler *c, location loc)
 }
 
 
-static location
-location_of_last_executing_statement(asdl_stmt_seq *stmts)
-{
-    for (Py_ssize_t i = asdl_seq_LEN(stmts) - 1; i >= 0; i++) {
-        location loc = LOC((stmt_ty)asdl_seq_GET(stmts, i));
-        if (loc.lineno > 0) {
-            return loc;
-        }
-    }
-    return NO_LOCATION;
-}
-
 /* Code generated for "try: <body> finally: <finalbody>" is as follows:
 
         SETUP_FINALLY           L
@@ -2851,9 +3328,9 @@ compiler_try_finally(struct compiler *c, stmt_ty s)
     RETURN_IF_ERROR(
         compiler_push_fblock(c, loc, FINALLY_END, end, NO_LABEL, NULL));
     VISIT_SEQ(c, stmt, s->v.Try.finalbody);
-    loc = location_of_last_executing_statement(s->v.Try.finalbody);
     compiler_pop_fblock(c, FINALLY_END, end);
 
+    loc = NO_LOCATION;
     ADDOP_I(c, loc, RERAISE, 0);
 
     USE_LABEL(c, cleanup);
@@ -2902,9 +3379,9 @@ compiler_try_star_finally(struct compiler *c, stmt_ty s)
         compiler_push_fblock(c, loc, FINALLY_END, end, NO_LABEL, NULL));
 
     VISIT_SEQ(c, stmt, s->v.TryStar.finalbody);
-    loc = location_of_last_executing_statement(s->v.Try.finalbody);
 
     compiler_pop_fblock(c, FINALLY_END, end);
+    loc = NO_LOCATION;
     ADDOP_I(c, loc, RERAISE, 0);
 
     USE_LABEL(c, cleanup);
@@ -3482,7 +3959,7 @@ compiler_assert(struct compiler *c, stmt_ty s)
         VISIT(c, expr, s->v.Assert.msg);
         ADDOP_I(c, LOC(s), CALL, 0);
     }
-    ADDOP_I(c, LOC(s), RAISE_VARARGS, 1);
+    ADDOP_I(c, LOC(s->v.Assert.test), RAISE_VARARGS, 1);
 
     USE_LABEL(c, end);
     return SUCCESS;
@@ -3518,6 +3995,8 @@ compiler_visit_stmt(struct compiler *c, stmt_ty s)
         return compiler_function(c, s, 0);
     case ClassDef_kind:
         return compiler_class(c, s);
+    case TypeAlias_kind:
+        return compiler_typealias(c, s);
     case Return_kind:
         return compiler_return(c, s);
     case Delete_kind:
@@ -3611,8 +4090,6 @@ unaryop(unaryop_ty op)
     switch (op) {
     case Invert:
         return UNARY_INVERT;
-    case Not:
-        return UNARY_NOT;
     case USub:
         return UNARY_NEGATIVE;
     default:
@@ -3683,7 +4160,7 @@ addop_yield(struct compiler *c, location loc) {
         ADDOP_I(c, loc, CALL_INTRINSIC_1, INTRINSIC_ASYNC_GEN_WRAP);
     }
     ADDOP_I(c, loc, YIELD_VALUE, 0);
-    ADDOP_I(c, loc, RESUME, 1);
+    ADDOP_I(c, loc, RESUME, RESUME_AFTER_YIELD);
     return SUCCESS;
 }
 
@@ -3724,12 +4201,23 @@ compiler_nameop(struct compiler *c, location loc,
         optype = OP_DEREF;
         break;
     case LOCAL:
-        if (c->u->u_ste->ste_type == FunctionBlock ||
-                (PyDict_GetItem(c->u->u_metadata.u_fasthidden, mangled) == Py_True))
+        if (_PyST_IsFunctionLike(c->u->u_ste)) {
             optype = OP_FAST;
+        }
+        else {
+            PyObject *item;
+            if (PyDict_GetItemRef(c->u->u_metadata.u_fasthidden, mangled,
+                                  &item) < 0) {
+                goto error;
+            }
+            if (item == Py_True) {
+                optype = OP_FAST;
+            }
+            Py_XDECREF(item);
+        }
         break;
     case GLOBAL_IMPLICIT:
-        if (c->u->u_ste->ste_type == FunctionBlock)
+        if (_PyST_IsFunctionLike(c->u->u_ste))
             optype = OP_GLOBAL;
         break;
     case GLOBAL_EXPLICIT:
@@ -3747,7 +4235,24 @@ compiler_nameop(struct compiler *c, location loc,
     case OP_DEREF:
         switch (ctx) {
         case Load:
-            op = (c->u->u_ste->ste_type == ClassBlock) ? LOAD_CLASSDEREF : LOAD_DEREF;
+            if (c->u->u_ste->ste_type == ClassBlock && !c->u->u_in_inlined_comp) {
+                op = LOAD_FROM_DICT_OR_DEREF;
+                // First load the locals
+                if (codegen_addop_noarg(INSTR_SEQUENCE(c), LOAD_LOCALS, loc) < 0) {
+                    goto error;
+                }
+            }
+            else if (c->u->u_ste->ste_can_see_class_scope) {
+                op = LOAD_FROM_DICT_OR_DEREF;
+                // First load the classdict
+                if (compiler_addop_o(c->u, loc, LOAD_DEREF,
+                                     c->u->u_metadata.u_freevars, &_Py_ID(__classdict__)) < 0) {
+                    goto error;
+                }
+            }
+            else {
+                op = LOAD_DEREF;
+            }
             break;
         case Store: op = STORE_DEREF; break;
         case Del: op = DELETE_DEREF; break;
@@ -3763,14 +4268,30 @@ compiler_nameop(struct compiler *c, location loc,
         return SUCCESS;
     case OP_GLOBAL:
         switch (ctx) {
-        case Load: op = LOAD_GLOBAL; break;
+        case Load:
+            if (c->u->u_ste->ste_can_see_class_scope && scope == GLOBAL_IMPLICIT) {
+                op = LOAD_FROM_DICT_OR_GLOBALS;
+                // First load the classdict
+                if (compiler_addop_o(c->u, loc, LOAD_DEREF,
+                                     c->u->u_metadata.u_freevars, &_Py_ID(__classdict__)) < 0) {
+                    goto error;
+                }
+            } else {
+                op = LOAD_GLOBAL;
+            }
+            break;
         case Store: op = STORE_GLOBAL; break;
         case Del: op = DELETE_GLOBAL; break;
         }
         break;
     case OP_NAME:
         switch (ctx) {
-        case Load: op = LOAD_NAME; break;
+        case Load:
+            op = (c->u->u_ste->ste_type == ClassBlock
+                    && c->u->u_in_inlined_comp)
+                ? LOAD_GLOBAL
+                : LOAD_NAME;
+            break;
         case Store: op = STORE_NAME; break;
         case Del: op = DELETE_NAME; break;
         }
@@ -3787,6 +4308,10 @@ compiler_nameop(struct compiler *c, location loc,
         arg <<= 1;
     }
     return codegen_addop_i(INSTR_SEQUENCE(c), op, arg, loc);
+
+error:
+    Py_DECREF(mangled);
+    return ERROR;
 }
 
 static int
@@ -3809,6 +4334,7 @@ compiler_boolop(struct compiler *c, expr_ty e)
     for (i = 0; i < n; ++i) {
         VISIT(c, expr, (expr_ty)asdl_seq_GET(s, i));
         ADDOP_I(c, loc, COPY, 1);
+        ADDOP(c, loc, TO_BOOL);
         ADDOP_JUMP(c, loc, jumpi, end);
         ADDOP(c, loc, POP_TOP);
     }
@@ -4116,6 +4642,7 @@ compiler_compare(struct compiler *c, expr_ty e)
             ADDOP_I(c, loc, COPY, 2);
             ADDOP_COMPARE(c, loc, asdl_seq_GET(e->v.Compare.ops, i));
             ADDOP_I(c, loc, COPY, 1);
+            ADDOP(c, loc, TO_BOOL);
             ADDOP_JUMP(c, loc, POP_JUMP_IF_FALSE, cleanup);
             ADDOP(c, loc, POP_TOP);
         }
@@ -4328,7 +4855,7 @@ load_args_for_super(struct compiler *c, expr_ty e) {
 
     // load super() global
     PyObject *super_name = e->v.Call.func->v.Name.id;
-    RETURN_IF_ERROR(compiler_nameop(c, loc, super_name, Load));
+    RETURN_IF_ERROR(compiler_nameop(c, LOC(e->v.Call.func), super_name, Load));
 
     if (asdl_seq_LEN(e->v.Call.args) == 2) {
         VISIT(c, expr, asdl_seq_GET(e->v.Call.args, 0));
@@ -4428,6 +4955,8 @@ maybe_optimize_method_call(struct compiler *c, expr_ty e)
         int opcode = asdl_seq_LEN(meth->v.Attribute.value->v.Call.args) ?
             LOAD_SUPER_METHOD : LOAD_ZERO_SUPER_METHOD;
         ADDOP_NAME(c, loc, opcode, meth->v.Attribute.attr, names);
+        loc = update_start_location_to_match_attr(c, loc, meth);
+        ADDOP(c, loc, NOP);
     } else {
         VISIT(c, expr, meth->v.Attribute.value);
         loc = update_start_location_to_match_attr(c, loc, meth);
@@ -4440,9 +4969,13 @@ maybe_optimize_method_call(struct compiler *c, expr_ty e)
         VISIT_SEQ(c, keyword, kwds);
         RETURN_IF_ERROR(
             compiler_call_simple_kw_helper(c, loc, kwds, kwdsl));
+        loc = update_start_location_to_match_attr(c, LOC(e), meth);
+        ADDOP_I(c, loc, CALL_KW, argsl + kwdsl);
+    }
+    else {
+        loc = update_start_location_to_match_attr(c, LOC(e), meth);
+        ADDOP_I(c, loc, CALL, argsl);
     }
-    loc = update_start_location_to_match_attr(c, LOC(e), meth);
-    ADDOP_I(c, loc, CALL, argsl + kwdsl);
     return 1;
 }
 
@@ -4482,9 +5015,9 @@ compiler_call(struct compiler *c, expr_ty e)
         return SUCCESS;
     }
     RETURN_IF_ERROR(check_caller(c, e->v.Call.func));
+    VISIT(c, expr, e->v.Call.func);
     location loc = LOC(e->v.Call.func);
     ADDOP(c, loc, PUSH_NULL);
-    VISIT(c, expr, e->v.Call.func);
     loc = LOC(e);
     return compiler_call_helper(c, loc, 0,
                                 e->v.Call.args,
@@ -4509,8 +5042,12 @@ compiler_joined_str(struct compiler *c, expr_ty e)
     }
     else {
         VISIT_SEQ(c, expr, e->v.JoinedStr.values);
-        if (asdl_seq_LEN(e->v.JoinedStr.values) != 1) {
-            ADDOP_I(c, loc, BUILD_STRING, asdl_seq_LEN(e->v.JoinedStr.values));
+        if (value_count > 1) {
+            ADDOP_I(c, loc, BUILD_STRING, value_count);
+        }
+        else if (value_count == 0) {
+            _Py_DECLARE_STR(empty, "");
+            ADDOP_LOAD_CONST_NEW(c, loc, Py_NewRef(&_Py_STR(empty)));
         }
     }
     return SUCCESS;
@@ -4540,26 +5077,26 @@ compiler_formatted_value(struct compiler *c, expr_ty e)
     /* The expression to be formatted. */
     VISIT(c, expr, e->v.FormattedValue.value);
 
-    switch (conversion) {
-    case 's': oparg = FVC_STR;   break;
-    case 'r': oparg = FVC_REPR;  break;
-    case 'a': oparg = FVC_ASCII; break;
-    case -1:  oparg = FVC_NONE;  break;
-    default:
-        PyErr_Format(PyExc_SystemError,
+    location loc = LOC(e);
+    if (conversion != -1) {
+        switch (conversion) {
+        case 's': oparg = FVC_STR;   break;
+        case 'r': oparg = FVC_REPR;  break;
+        case 'a': oparg = FVC_ASCII; break;
+        default:
+            PyErr_Format(PyExc_SystemError,
                      "Unrecognized conversion character %d", conversion);
-        return ERROR;
+            return ERROR;
+        }
+        ADDOP_I(c, loc, CONVERT_VALUE, oparg);
     }
     if (e->v.FormattedValue.format_spec) {
         /* Evaluate the format spec, and update our opcode arg. */
         VISIT(c, expr, e->v.FormattedValue.format_spec);
-        oparg |= FVS_HAVE_SPEC;
+        ADDOP(c, loc, FORMAT_WITH_SPEC);
+    } else {
+        ADDOP(c, loc, FORMAT_SIMPLE);
     }
-
-    /* And push our opcode and oparg */
-    location loc = LOC(e);
-    ADDOP_I(c, loc, FORMAT_VALUE, oparg);
-
     return SUCCESS;
 }
 
@@ -4608,7 +5145,7 @@ compiler_subkwargs(struct compiler *c, location loc,
 }
 
 /* Used by compiler_call_helper and maybe_optimize_method_call to emit
- * KW_NAMES before CALL.
+ * a tuple of keyword names before CALL.
  */
 static int
 compiler_call_simple_kw_helper(struct compiler *c, location loc,
@@ -4623,12 +5160,7 @@ compiler_call_simple_kw_helper(struct compiler *c, location loc,
         keyword_ty kw = asdl_seq_GET(keywords, i);
         PyTuple_SET_ITEM(names, i, Py_NewRef(kw->arg));
     }
-    Py_ssize_t arg = compiler_add_const(c->c_const_cache, c->u, names);
-    if (arg < 0) {
-        return ERROR;
-    }
-    Py_DECREF(names);
-    ADDOP_I(c, loc, KW_NAMES, arg);
+    ADDOP_LOAD_CONST_NEW(c, loc, names);
     return SUCCESS;
 }
 
@@ -4673,8 +5205,11 @@ compiler_call_helper(struct compiler *c, location loc,
         VISIT_SEQ(c, keyword, keywords);
         RETURN_IF_ERROR(
             compiler_call_simple_kw_helper(c, loc, keywords, nkwelts));
+        ADDOP_I(c, loc, CALL_KW, n + nelts + nkwelts);
+    }
+    else {
+        ADDOP_I(c, loc, CALL, n + nelts);
     }
-    ADDOP_I(c, loc, CALL, n + nelts + nkwelts);
     return SUCCESS;
 
 ex_call:
@@ -4988,6 +5523,8 @@ typedef struct {
     PyObject *pushed_locals;
     PyObject *temp_symbols;
     PyObject *fast_hidden;
+    jump_target_label cleanup;
+    jump_target_label end;
 } inlined_comprehension_state;
 
 static int
@@ -4995,6 +5532,8 @@ push_inlined_comprehension_state(struct compiler *c, location loc,
                                  PySTEntryObject *entry,
                                  inlined_comprehension_state *state)
 {
+    int in_class_block = (c->u->u_ste->ste_type == ClassBlock) && !c->u->u_in_inlined_comp;
+    c->u->u_in_inlined_comp++;
     // iterate over names bound in the comprehension and ensure we isolate
     // them from the outer scope as needed
     PyObject *k, *v;
@@ -5006,11 +5545,16 @@ push_inlined_comprehension_state(struct compiler *c, location loc,
         // at all; DEF_LOCAL | DEF_NONLOCAL can occur in the case of an
         // assignment expression to a nonlocal in the comprehension, these don't
         // need handling here since they shouldn't be isolated
-        if (symbol & DEF_LOCAL && !(symbol & DEF_NONLOCAL)) {
-            if (c->u->u_ste->ste_type != FunctionBlock) {
+        if ((symbol & DEF_LOCAL && !(symbol & DEF_NONLOCAL)) || in_class_block) {
+            if (!_PyST_IsFunctionLike(c->u->u_ste)) {
                 // non-function scope: override this name to use fast locals
-                PyObject *orig = PyDict_GetItem(c->u->u_metadata.u_fasthidden, k);
-                if (orig != Py_True) {
+                PyObject *orig;
+                if (PyDict_GetItemRef(c->u->u_metadata.u_fasthidden, k, &orig) < 0) {
+                    return ERROR;
+                }
+                int orig_is_true = (orig == Py_True);
+                Py_XDECREF(orig);
+                if (!orig_is_true) {
                     if (PyDict_SetItem(c->u->u_metadata.u_fasthidden, k, Py_True) < 0) {
                         return ERROR;
                     }
@@ -5028,8 +5572,7 @@ push_inlined_comprehension_state(struct compiler *c, location loc,
             long scope = (symbol >> SCOPE_OFFSET) & SCOPE_MASK;
             PyObject *outv = PyDict_GetItemWithError(c->u->u_ste->ste_symbols, k);
             if (outv == NULL) {
-                assert(PyErr_Occurred());
-                return ERROR;
+                outv = _PyLong_GetZero();
             }
             assert(PyLong_Check(outv));
             long outsc = (PyLong_AS_LONG(outv) >> SCOPE_OFFSET) & SCOPE_MASK;
@@ -5061,31 +5604,29 @@ push_inlined_comprehension_state(struct compiler *c, location loc,
                 }
                 Py_DECREF(outv);
             }
-            if (outsc == LOCAL || outsc == CELL || outsc == FREE) {
-                // local names bound in comprehension must be isolated from
-                // outer scope; push existing value (which may be NULL if
-                // not defined) on stack
+            // local names bound in comprehension must be isolated from
+            // outer scope; push existing value (which may be NULL if
+            // not defined) on stack
+            if (state->pushed_locals == NULL) {
+                state->pushed_locals = PyList_New(0);
                 if (state->pushed_locals == NULL) {
-                    state->pushed_locals = PyList_New(0);
-                    if (state->pushed_locals == NULL) {
-                        return ERROR;
-                    }
-                }
-                // in the case of a cell, this will actually push the cell
-                // itself to the stack, then we'll create a new one for the
-                // comprehension and restore the original one after
-                ADDOP_NAME(c, loc, LOAD_FAST_AND_CLEAR, k, varnames);
-                if (scope == CELL) {
-                    if (outsc == FREE) {
-                        ADDOP_NAME(c, loc, MAKE_CELL, k, freevars);
-                    } else {
-                        ADDOP_NAME(c, loc, MAKE_CELL, k, cellvars);
-                    }
-                }
-                if (PyList_Append(state->pushed_locals, k) < 0) {
                     return ERROR;
                 }
             }
+            // in the case of a cell, this will actually push the cell
+            // itself to the stack, then we'll create a new one for the
+            // comprehension and restore the original one after
+            ADDOP_NAME(c, loc, LOAD_FAST_AND_CLEAR, k, varnames);
+            if (scope == CELL) {
+                if (outsc == FREE) {
+                    ADDOP_NAME(c, loc, MAKE_CELL, k, freevars);
+                } else {
+                    ADDOP_NAME(c, loc, MAKE_CELL, k, cellvars);
+                }
+            }
+            if (PyList_Append(state->pushed_locals, k) < 0) {
+                return ERROR;
+            }
         }
     }
     if (state->pushed_locals) {
@@ -5094,15 +5635,50 @@ push_inlined_comprehension_state(struct compiler *c, location loc,
         // `pushed_locals` on the stack, but this will be reversed when we swap
         // out the comprehension result in pop_inlined_comprehension_state
         ADDOP_I(c, loc, SWAP, PyList_GET_SIZE(state->pushed_locals) + 1);
+
+        // Add our own cleanup handler to restore comprehension locals in case
+        // of exception, so they have the correct values inside an exception
+        // handler or finally block.
+        NEW_JUMP_TARGET_LABEL(c, cleanup);
+        state->cleanup = cleanup;
+        NEW_JUMP_TARGET_LABEL(c, end);
+        state->end = end;
+
+        // no need to push an fblock for this "virtual" try/finally; there can't
+        // be return/continue/break inside a comprehension
+        ADDOP_JUMP(c, loc, SETUP_FINALLY, cleanup);
     }
 
     return SUCCESS;
 }
 
+static int
+restore_inlined_comprehension_locals(struct compiler *c, location loc,
+                                     inlined_comprehension_state state)
+{
+    PyObject *k;
+    // pop names we pushed to stack earlier
+    Py_ssize_t npops = PyList_GET_SIZE(state.pushed_locals);
+    // Preserve the comprehension result (or exception) as TOS. This
+    // reverses the SWAP we did in push_inlined_comprehension_state to get
+    // the outermost iterable to TOS, so we can still just iterate
+    // pushed_locals in simple reverse order
+    ADDOP_I(c, loc, SWAP, npops + 1);
+    for (Py_ssize_t i = npops - 1; i >= 0; --i) {
+        k = PyList_GetItem(state.pushed_locals, i);
+        if (k == NULL) {
+            return ERROR;
+        }
+        ADDOP_NAME(c, loc, STORE_FAST_MAYBE_NULL, k, varnames);
+    }
+    return SUCCESS;
+}
+
 static int
 pop_inlined_comprehension_state(struct compiler *c, location loc,
                                 inlined_comprehension_state state)
 {
+    c->u->u_in_inlined_comp--;
     PyObject *k, *v;
     Py_ssize_t pos = 0;
     if (state.temp_symbols) {
@@ -5114,19 +5690,22 @@ pop_inlined_comprehension_state(struct compiler *c, location loc,
         Py_CLEAR(state.temp_symbols);
     }
     if (state.pushed_locals) {
-        // pop names we pushed to stack earlier
-        Py_ssize_t npops = PyList_GET_SIZE(state.pushed_locals);
-        // Preserve the list/dict/set result of the comprehension as TOS. This
-        // reverses the SWAP we did in push_inlined_comprehension_state to get
-        // the outermost iterable to TOS, so we can still just iterate
-        // pushed_locals in simple reverse order
-        ADDOP_I(c, loc, SWAP, npops + 1);
-        for (Py_ssize_t i = npops - 1; i >= 0; --i) {
-            k = PyList_GetItem(state.pushed_locals, i);
-            if (k == NULL) {
-                return ERROR;
-            }
-            ADDOP_NAME(c, loc, STORE_FAST_MAYBE_NULL, k, varnames);
+        ADDOP(c, NO_LOCATION, POP_BLOCK);
+        ADDOP_JUMP(c, NO_LOCATION, JUMP, state.end);
+
+        // cleanup from an exception inside the comprehension
+        USE_LABEL(c, state.cleanup);
+        // discard incomplete comprehension result (beneath exc on stack)
+        ADDOP_I(c, NO_LOCATION, SWAP, 2);
+        ADDOP(c, NO_LOCATION, POP_TOP);
+        if (restore_inlined_comprehension_locals(c, loc, state) < 0) {
+            return ERROR;
+        }
+        ADDOP_I(c, NO_LOCATION, RERAISE, 0);
+
+        USE_LABEL(c, state.end);
+        if (restore_inlined_comprehension_locals(c, loc, state) < 0) {
+            return ERROR;
         }
         Py_CLEAR(state.pushed_locals);
     }
@@ -5169,11 +5748,11 @@ compiler_comprehension(struct compiler *c, expr_ty e, int type,
                        expr_ty val)
 {
     PyCodeObject *co = NULL;
-    inlined_comprehension_state inline_state = {NULL, NULL};
+    inlined_comprehension_state inline_state = {NULL, NULL, NULL, NO_LABEL, NO_LABEL};
     comprehension_ty outermost;
     int scope_type = c->u->u_scope_type;
     int is_top_level_await = IS_TOP_LEVEL_AWAIT(c);
-    PySTEntryObject *entry = PySymtable_Lookup(c->c_st, (void *)e);
+    PySTEntryObject *entry = _PySymtable_Lookup(c->c_st, (void *)e);
     if (entry == NULL) {
         goto error;
     }
@@ -5349,6 +5928,7 @@ compiler_visit_keyword(struct compiler *c, keyword_ty k)
 static int
 compiler_with_except_finish(struct compiler *c, jump_target_label cleanup) {
     NEW_JUMP_TARGET_LABEL(c, suppress);
+    ADDOP(c, NO_LOCATION, TO_BOOL);
     ADDOP_JUMP(c, NO_LOCATION, POP_JUMP_IF_TRUE, suppress);
     ADDOP_I(c, NO_LOCATION, RERAISE, 2);
 
@@ -5582,6 +6162,10 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
         if (e->v.UnaryOp.op == UAdd) {
             ADDOP_I(c, loc, CALL_INTRINSIC_1, INTRINSIC_UNARY_POSITIVE);
         }
+        else if (e->v.UnaryOp.op == Not) {
+            ADDOP(c, loc, TO_BOOL);
+            ADDOP(c, loc, UNARY_NOT);
+        }
         else {
             ADDOP(c, loc, unaryop(e->v.UnaryOp.op));
         }
@@ -5603,7 +6187,7 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
     case DictComp_kind:
         return compiler_dictcomp(c, e);
     case Yield_kind:
-        if (c->u->u_ste->ste_type != FunctionBlock) {
+        if (!_PyST_IsFunctionLike(c->u->u_ste)) {
             return compiler_error(c, loc, "'yield' outside function");
         }
         if (e->v.Yield.value) {
@@ -5615,7 +6199,7 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
         ADDOP_YIELD(c, loc);
         break;
     case YieldFrom_kind:
-        if (c->u->u_ste->ste_type != FunctionBlock) {
+        if (!_PyST_IsFunctionLike(c->u->u_ste)) {
             return compiler_error(c, loc, "'yield' outside function");
         }
         if (c->u->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION) {
@@ -5628,7 +6212,7 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
         break;
     case Await_kind:
         if (!IS_TOP_LEVEL_AWAIT(c)){
-            if (c->u->u_ste->ste_type != FunctionBlock){
+            if (!_PyST_IsFunctionLike(c->u->u_ste)) {
                 return compiler_error(c, loc, "'await' outside function");
             }
 
@@ -5661,6 +6245,8 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
             int opcode = asdl_seq_LEN(e->v.Attribute.value->v.Call.args) ?
                 LOAD_SUPER_ATTR : LOAD_ZERO_SUPER_ATTR;
             ADDOP_NAME(c, loc, opcode, e->v.Attribute.attr, names);
+            loc = update_start_location_to_match_attr(c, loc, e);
+            ADDOP(c, loc, NOP);
             return SUCCESS;
         }
         VISIT(c, expr, e->v.Attribute.value);
@@ -5938,7 +6524,7 @@ compiler_error(struct compiler *c, location loc,
     }
     PyObject *loc_obj = PyErr_ProgramTextObject(c->c_filename, loc.lineno);
     if (loc_obj == NULL) {
-        loc_obj = Py_NewRef(Py_None);
+        loc_obj = Py_None;
     }
     PyObject *args = Py_BuildValue("O(OiiOii)", msg, c->c_filename,
                                    loc.lineno, loc.col_offset + 1, loc_obj,
@@ -6755,6 +7341,7 @@ compiler_pattern_value(struct compiler *c, pattern_ty p, pattern_context *pc)
     }
     VISIT(c, expr, value);
     ADDOP_COMPARE(c, LOC(p), Eq);
+    ADDOP(c, LOC(p), TO_BOOL);
     RETURN_IF_ERROR(jump_to_fail_pop(c, LOC(p), pc, POP_JUMP_IF_FALSE));
     return SUCCESS;
 }
@@ -6915,7 +7502,7 @@ compute_code_flags(struct compiler *c)
 {
     PySTEntryObject *ste = c->u->u_ste;
     int flags = 0;
-    if (ste->ste_type == FunctionBlock) {
+    if (_PyST_IsFunctionLike(c->u->u_ste)) {
         flags |= CO_NEWLOCALS | CO_OPTIMIZED;
         if (ste->ste_nested)
             flags |= CO_NESTED;
@@ -6973,194 +7560,6 @@ _PyCompile_ConstCacheMergeOne(PyObject *const_cache, PyObject **obj)
     return SUCCESS;
 }
 
-
-static int *
-build_cellfixedoffsets(_PyCompile_CodeUnitMetadata *umd)
-{
-    int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
-    int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
-    int nfreevars = (int)PyDict_GET_SIZE(umd->u_freevars);
-
-    int noffsets = ncellvars + nfreevars;
-    int *fixed = PyMem_New(int, noffsets);
-    if (fixed == NULL) {
-        PyErr_NoMemory();
-        return NULL;
-    }
-    for (int i = 0; i < noffsets; i++) {
-        fixed[i] = nlocals + i;
-    }
-
-    PyObject *varname, *cellindex;
-    Py_ssize_t pos = 0;
-    while (PyDict_Next(umd->u_cellvars, &pos, &varname, &cellindex)) {
-        PyObject *varindex = PyDict_GetItem(umd->u_varnames, varname);
-        if (varindex != NULL) {
-            assert(PyLong_AS_LONG(cellindex) < INT_MAX);
-            assert(PyLong_AS_LONG(varindex) < INT_MAX);
-            int oldindex = (int)PyLong_AS_LONG(cellindex);
-            int argoffset = (int)PyLong_AS_LONG(varindex);
-            fixed[oldindex] = argoffset;
-        }
-    }
-
-    return fixed;
-}
-
-static int
-insert_prefix_instructions(_PyCompile_CodeUnitMetadata *umd, basicblock *entryblock,
-                           int *fixed, int nfreevars, int code_flags)
-{
-    assert(umd->u_firstlineno > 0);
-
-    /* Add the generator prefix instructions. */
-    if (code_flags & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR)) {
-        cfg_instr make_gen = {
-            .i_opcode = RETURN_GENERATOR,
-            .i_oparg = 0,
-            .i_loc = LOCATION(umd->u_firstlineno, umd->u_firstlineno, -1, -1),
-            .i_target = NULL,
-        };
-        RETURN_IF_ERROR(_PyBasicblock_InsertInstruction(entryblock, 0, &make_gen));
-        cfg_instr pop_top = {
-            .i_opcode = POP_TOP,
-            .i_oparg = 0,
-            .i_loc = NO_LOCATION,
-            .i_target = NULL,
-        };
-        RETURN_IF_ERROR(_PyBasicblock_InsertInstruction(entryblock, 1, &pop_top));
-    }
-
-    /* Set up cells for any variable that escapes, to be put in a closure. */
-    const int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
-    if (ncellvars) {
-        // umd->u_cellvars has the cells out of order so we sort them
-        // before adding the MAKE_CELL instructions.  Note that we
-        // adjust for arg cells, which come first.
-        const int nvars = ncellvars + (int)PyDict_GET_SIZE(umd->u_varnames);
-        int *sorted = PyMem_RawCalloc(nvars, sizeof(int));
-        if (sorted == NULL) {
-            PyErr_NoMemory();
-            return ERROR;
-        }
-        for (int i = 0; i < ncellvars; i++) {
-            sorted[fixed[i]] = i + 1;
-        }
-        for (int i = 0, ncellsused = 0; ncellsused < ncellvars; i++) {
-            int oldindex = sorted[i] - 1;
-            if (oldindex == -1) {
-                continue;
-            }
-            cfg_instr make_cell = {
-                .i_opcode = MAKE_CELL,
-                // This will get fixed in offset_derefs().
-                .i_oparg = oldindex,
-                .i_loc = NO_LOCATION,
-                .i_target = NULL,
-            };
-            if (_PyBasicblock_InsertInstruction(entryblock, ncellsused, &make_cell) < 0) {
-                PyMem_RawFree(sorted);
-                return ERROR;
-            }
-            ncellsused += 1;
-        }
-        PyMem_RawFree(sorted);
-    }
-
-    if (nfreevars) {
-        cfg_instr copy_frees = {
-            .i_opcode = COPY_FREE_VARS,
-            .i_oparg = nfreevars,
-            .i_loc = NO_LOCATION,
-            .i_target = NULL,
-        };
-        RETURN_IF_ERROR(_PyBasicblock_InsertInstruction(entryblock, 0, &copy_frees));
-    }
-
-    return SUCCESS;
-}
-
-static int
-fix_cell_offsets(_PyCompile_CodeUnitMetadata *umd, basicblock *entryblock, int *fixedmap)
-{
-    int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
-    int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
-    int nfreevars = (int)PyDict_GET_SIZE(umd->u_freevars);
-    int noffsets = ncellvars + nfreevars;
-
-    // First deal with duplicates (arg cells).
-    int numdropped = 0;
-    for (int i = 0; i < noffsets ; i++) {
-        if (fixedmap[i] == i + nlocals) {
-            fixedmap[i] -= numdropped;
-        }
-        else {
-            // It was a duplicate (cell/arg).
-            numdropped += 1;
-        }
-    }
-
-    // Then update offsets, either relative to locals or by cell2arg.
-    for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-        for (int i = 0; i < b->b_iused; i++) {
-            cfg_instr *inst = &b->b_instr[i];
-            // This is called before extended args are generated.
-            assert(inst->i_opcode != EXTENDED_ARG);
-            int oldoffset = inst->i_oparg;
-            switch(inst->i_opcode) {
-                case MAKE_CELL:
-                case LOAD_CLOSURE:
-                case LOAD_DEREF:
-                case STORE_DEREF:
-                case DELETE_DEREF:
-                case LOAD_CLASSDEREF:
-                    assert(oldoffset >= 0);
-                    assert(oldoffset < noffsets);
-                    assert(fixedmap[oldoffset] >= 0);
-                    inst->i_oparg = fixedmap[oldoffset];
-            }
-        }
-    }
-
-    return numdropped;
-}
-
-
-static int
-prepare_localsplus(_PyCompile_CodeUnitMetadata *umd, cfg_builder *g, int code_flags)
-{
-    assert(PyDict_GET_SIZE(umd->u_varnames) < INT_MAX);
-    assert(PyDict_GET_SIZE(umd->u_cellvars) < INT_MAX);
-    assert(PyDict_GET_SIZE(umd->u_freevars) < INT_MAX);
-    int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
-    int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
-    int nfreevars = (int)PyDict_GET_SIZE(umd->u_freevars);
-    assert(INT_MAX - nlocals - ncellvars > 0);
-    assert(INT_MAX - nlocals - ncellvars - nfreevars > 0);
-    int nlocalsplus = nlocals + ncellvars + nfreevars;
-    int* cellfixedoffsets = build_cellfixedoffsets(umd);
-    if (cellfixedoffsets == NULL) {
-        return ERROR;
-    }
-
-
-    // This must be called before fix_cell_offsets().
-    if (insert_prefix_instructions(umd, g->g_entryblock, cellfixedoffsets, nfreevars, code_flags)) {
-        PyMem_Free(cellfixedoffsets);
-        return ERROR;
-    }
-
-    int numdropped = fix_cell_offsets(umd, g->g_entryblock, cellfixedoffsets);
-    PyMem_Free(cellfixedoffsets);  // At this point we're done with it.
-    cellfixedoffsets = NULL;
-    if (numdropped < 0) {
-        return ERROR;
-    }
-
-    nlocalsplus -= numdropped;
-    return nlocalsplus;
-}
-
 static int
 add_return_at_end(struct compiler *c, int addNone)
 {
@@ -7174,12 +7573,11 @@ add_return_at_end(struct compiler *c, int addNone)
     return SUCCESS;
 }
 
-static int cfg_to_instr_sequence(cfg_builder *g, instr_sequence *seq);
-
 static PyCodeObject *
 optimize_and_assemble_code_unit(struct compiler_unit *u, PyObject *const_cache,
                    int code_flags, PyObject *filename)
 {
+    cfg_builder *g = NULL;
     instr_sequence optimized_instrs;
     memset(&optimized_instrs, 0, sizeof(instr_sequence));
 
@@ -7188,51 +7586,37 @@ optimize_and_assemble_code_unit(struct compiler_unit *u, PyObject *const_cache,
     if (consts == NULL) {
         goto error;
     }
-    cfg_builder g;
-    if (instr_sequence_to_cfg(&u->u_instr_sequence, &g) < 0) {
+    g = instr_sequence_to_cfg(&u->u_instr_sequence);
+    if (g == NULL) {
         goto error;
     }
-    int nparams = (int)PyList_GET_SIZE(u->u_ste->ste_varnames);
     int nlocals = (int)PyDict_GET_SIZE(u->u_metadata.u_varnames);
+    int nparams = (int)PyList_GET_SIZE(u->u_ste->ste_varnames);
     assert(u->u_metadata.u_firstlineno);
-    if (_PyCfg_OptimizeCodeUnit(&g, consts, const_cache, code_flags, nlocals,
-                                nparams, u->u_metadata.u_firstlineno) < 0) {
-        goto error;
-    }
-
-    /** Assembly **/
-    int nlocalsplus = prepare_localsplus(&u->u_metadata, &g, code_flags);
-    if (nlocalsplus < 0) {
-        goto error;
-    }
 
-    int maxdepth = _PyCfg_Stackdepth(g.g_entryblock, code_flags);
-    if (maxdepth < 0) {
+    if (_PyCfg_OptimizeCodeUnit(g, consts, const_cache, nlocals,
+                                nparams, u->u_metadata.u_firstlineno) < 0) {
         goto error;
     }
 
-    _PyCfg_ConvertPseudoOps(g.g_entryblock);
-
-    /* Order of basic blocks must have been determined by now */
-
-    if (_PyCfg_ResolveJumps(&g) < 0) {
+    int stackdepth;
+    int nlocalsplus;
+    if (_PyCfg_OptimizedCfgToInstructionSequence(g, &u->u_metadata, code_flags,
+                                                 &stackdepth, &nlocalsplus,
+                                                 &optimized_instrs) < 0) {
         goto error;
     }
 
-    /* Can't modify the bytecode after computing jump offsets. */
-
-    if (cfg_to_instr_sequence(&g, &optimized_instrs) < 0) {
-        goto error;
-    }
+    /** Assembly **/
 
     co = _PyAssemble_MakeCodeObject(&u->u_metadata, const_cache, consts,
-                                    maxdepth, &optimized_instrs, nlocalsplus,
+                                    stackdepth, &optimized_instrs, nlocalsplus,
                                     code_flags, filename);
 
 error:
     Py_XDECREF(consts);
     instr_sequence_fini(&optimized_instrs);
-    _PyCfgBuilder_Fini(&g);
+    _PyCfgBuilder_Free(g);
     return co;
 }
 
@@ -7255,36 +7639,6 @@ optimize_and_assemble(struct compiler *c, int addNone)
     return optimize_and_assemble_code_unit(u, const_cache, code_flags, filename);
 }
 
-static int
-cfg_to_instr_sequence(cfg_builder *g, instr_sequence *seq)
-{
-    int lbl = 0;
-    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
-        b->b_label = (jump_target_label){lbl};
-        lbl += b->b_iused;
-    }
-    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
-        RETURN_IF_ERROR(instr_sequence_use_label(seq, b->b_label.id));
-        for (int i = 0; i < b->b_iused; i++) {
-            cfg_instr *instr = &b->b_instr[i];
-            RETURN_IF_ERROR(
-                instr_sequence_addop(seq, instr->i_opcode, instr->i_oparg, instr->i_loc));
-
-            _PyCompile_ExceptHandlerInfo *hi = &seq->s_instrs[seq->s_used-1].i_except_handler_info;
-            if (instr->i_except != NULL) {
-                hi->h_offset = instr->i_except->b_offset;
-                hi->h_startdepth = instr->i_except->b_startdepth;
-                hi->h_preserve_lasti = instr->i_except->b_preserve_lasti;
-            }
-            else {
-                hi->h_offset = -1;
-            }
-        }
-    }
-    return SUCCESS;
-}
-
-
 /* Access to compiler optimizations for unit tests.
  *
  * _PyCompile_CodeGen takes and AST, applies code-gen and
@@ -7334,7 +7688,7 @@ instructions_to_instr_sequence(PyObject *instructions, instr_sequence *seq)
 
     for (int i = 0; i < num_insts; i++) {
         if (is_target[i]) {
-            if (instr_sequence_use_label(seq, i) < 0) {
+            if (_PyCompile_InstructionSequence_UseLabel(seq, i) < 0) {
                 goto error;
             }
         }
@@ -7348,7 +7702,7 @@ instructions_to_instr_sequence(PyObject *instructions, instr_sequence *seq)
             goto error;
         }
         int oparg;
-        if (HAS_ARG(opcode)) {
+        if (OPCODE_HAS_ARG(opcode)) {
             oparg = PyLong_AsLong(PyTuple_GET_ITEM(item, 1));
             if (PyErr_Occurred()) {
                 goto error;
@@ -7374,7 +7728,7 @@ instructions_to_instr_sequence(PyObject *instructions, instr_sequence *seq)
         if (PyErr_Occurred()) {
             goto error;
         }
-        if (instr_sequence_addop(seq, opcode, oparg, loc) < 0) {
+        if (_PyCompile_InstructionSequence_Addop(seq, opcode, oparg, loc) < 0) {
             goto error;
         }
     }
@@ -7385,23 +7739,26 @@ instructions_to_instr_sequence(PyObject *instructions, instr_sequence *seq)
     return ERROR;
 }
 
-static int
-instructions_to_cfg(PyObject *instructions, cfg_builder *g)
+static cfg_builder*
+instructions_to_cfg(PyObject *instructions)
 {
+    cfg_builder *g = NULL;
     instr_sequence seq;
     memset(&seq, 0, sizeof(instr_sequence));
 
     if (instructions_to_instr_sequence(instructions, &seq) < 0) {
         goto error;
     }
-    if (instr_sequence_to_cfg(&seq, g) < 0) {
+    g = instr_sequence_to_cfg(&seq);
+    if (g == NULL) {
         goto error;
     }
     instr_sequence_fini(&seq);
-    return SUCCESS;
+    return g;
 error:
+    _PyCfgBuilder_Free(g);
     instr_sequence_fini(&seq);
-    return ERROR;
+    return NULL;
 }
 
 static PyObject *
@@ -7440,44 +7797,107 @@ instr_sequence_to_instructions(instr_sequence *seq)
 static PyObject *
 cfg_to_instructions(cfg_builder *g)
 {
-    PyObject *instructions = PyList_New(0);
-    if (instructions == NULL) {
+    instr_sequence seq;
+    memset(&seq, 0, sizeof(seq));
+    if (_PyCfg_ToInstructionSequence(g, &seq) < 0) {
         return NULL;
     }
-    int lbl = 0;
-    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
-        b->b_label = (jump_target_label){lbl};
-        lbl += b->b_iused;
-    }
-    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
-        for (int i = 0; i < b->b_iused; i++) {
-            cfg_instr *instr = &b->b_instr[i];
-            location loc = instr->i_loc;
-            int arg = HAS_TARGET(instr->i_opcode) ?
-                      instr->i_target->b_label.id : instr->i_oparg;
-
-            PyObject *inst_tuple = Py_BuildValue(
-                "(iiiiii)", instr->i_opcode, arg,
-                loc.lineno, loc.end_lineno,
-                loc.col_offset, loc.end_col_offset);
-            if (inst_tuple == NULL) {
-                goto error;
-            }
+    PyObject *res = instr_sequence_to_instructions(&seq);
+    instr_sequence_fini(&seq);
+    return res;
+}
 
-            if (PyList_Append(instructions, inst_tuple) != 0) {
-                Py_DECREF(inst_tuple);
-                goto error;
+// C implementation of inspect.cleandoc()
+//
+// Difference from inspect.cleandoc():
+// - Do not remove leading and trailing blank lines to keep lineno.
+PyObject *
+_PyCompile_CleanDoc(PyObject *doc)
+{
+    doc = PyObject_CallMethod(doc, "expandtabs", NULL);
+    if (doc == NULL) {
+        return NULL;
+    }
+
+    Py_ssize_t doc_size;
+    const char *doc_utf8 = PyUnicode_AsUTF8AndSize(doc, &doc_size);
+    if (doc_utf8 == NULL) {
+        Py_DECREF(doc);
+        return NULL;
+    }
+    const char *p = doc_utf8;
+    const char *pend = p + doc_size;
+
+    // First pass: find minimum indentation of any non-blank lines
+    // after first line.
+    while (p < pend && *p++ != '\n') {
+    }
+
+    Py_ssize_t margin = PY_SSIZE_T_MAX;
+    while (p < pend) {
+        const char *s = p;
+        while (*p == ' ') p++;
+        if (p < pend && *p != '\n') {
+            margin = Py_MIN(margin, p - s);
+        }
+        while (p < pend && *p++ != '\n') {
+        }
+    }
+    if (margin == PY_SSIZE_T_MAX) {
+        margin = 0;
+    }
+
+    // Second pass: write cleandoc into buff.
+
+    // copy first line without leading spaces.
+    p = doc_utf8;
+    while (*p == ' ') {
+        p++;
+    }
+    if (p == doc_utf8 && margin == 0 ) {
+        // doc is already clean.
+        return doc;
+    }
+
+    char *buff = PyMem_Malloc(doc_size);
+    if (buff == NULL){
+        Py_DECREF(doc);
+        PyErr_NoMemory();
+        return NULL;
+    }
+
+    char *w = buff;
+
+    while (p < pend) {
+        int ch = *w++ = *p++;
+        if (ch == '\n') {
+            break;
+        }
+    }
+
+    // copy subsequent lines without margin.
+    while (p < pend) {
+        for (Py_ssize_t i = 0; i < margin; i++, p++) {
+            if (*p != ' ') {
+                assert(*p == '\n' || *p == '\0');
+                break;
+            }
+        }
+        while (p < pend) {
+            int ch = *w++ = *p++;
+            if (ch == '\n') {
+                break;
             }
-            Py_DECREF(inst_tuple);
         }
     }
 
-    return instructions;
-error:
-    Py_DECREF(instructions);
-    return NULL;
+    Py_DECREF(doc);
+    PyObject *res = PyUnicode_FromStringAndSize(buff, w - buff);
+    PyMem_Free(buff);
+    return res;
 }
 
+
 PyObject *
 _PyCompile_CodeGen(PyObject *ast, PyObject *filename, PyCompilerFlags *pflags,
                    int optimize, int compile_mode)
@@ -7564,36 +7984,38 @@ _PyCompile_CodeGen(PyObject *ast, PyObject *filename, PyCompilerFlags *pflags,
 }
 
 PyObject *
-_PyCompile_OptimizeCfg(PyObject *instructions, PyObject *consts)
+_PyCompile_OptimizeCfg(PyObject *instructions, PyObject *consts, int nlocals)
 {
+    cfg_builder *g = NULL;
     PyObject *res = NULL;
     PyObject *const_cache = PyDict_New();
     if (const_cache == NULL) {
         return NULL;
     }
 
-    cfg_builder g;
-    if (instructions_to_cfg(instructions, &g) < 0) {
+    g = instructions_to_cfg(instructions);
+    if (g == NULL) {
         goto error;
     }
-    int code_flags = 0, nlocals = 0, nparams = 0, firstlineno = 1;
-    if (_PyCfg_OptimizeCodeUnit(&g, consts, const_cache, code_flags, nlocals,
+    int nparams = 0, firstlineno = 1;
+    if (_PyCfg_OptimizeCodeUnit(g, consts, const_cache, nlocals,
                                 nparams, firstlineno) < 0) {
         goto error;
     }
-    res = cfg_to_instructions(&g);
+    res = cfg_to_instructions(g);
 error:
     Py_DECREF(const_cache);
-    _PyCfgBuilder_Fini(&g);
+    _PyCfgBuilder_Free(g);
     return res;
 }
 
-int _PyCfg_JumpLabelsToTargets(basicblock *entryblock);
+int _PyCfg_JumpLabelsToTargets(cfg_builder *g);
 
 PyCodeObject *
 _PyCompile_Assemble(_PyCompile_CodeUnitMetadata *umd, PyObject *filename,
                     PyObject *instructions)
 {
+    cfg_builder *g = NULL;
     PyCodeObject *co = NULL;
     instr_sequence optimized_instrs;
     memset(&optimized_instrs, 0, sizeof(instr_sequence));
@@ -7603,37 +8025,20 @@ _PyCompile_Assemble(_PyCompile_CodeUnitMetadata *umd, PyObject *filename,
         return NULL;
     }
 
-    cfg_builder g;
-    if (instructions_to_cfg(instructions, &g) < 0) {
+    g = instructions_to_cfg(instructions);
+    if (g == NULL) {
         goto error;
     }
 
-    if (_PyCfg_JumpLabelsToTargets(g.g_entryblock) < 0) {
+    if (_PyCfg_JumpLabelsToTargets(g) < 0) {
         goto error;
     }
 
     int code_flags = 0;
-    int nlocalsplus = prepare_localsplus(umd, &g, code_flags);
-    if (nlocalsplus < 0) {
-        goto error;
-    }
-
-    int maxdepth = _PyCfg_Stackdepth(g.g_entryblock, code_flags);
-    if (maxdepth < 0) {
-        goto error;
-    }
-
-    _PyCfg_ConvertPseudoOps(g.g_entryblock);
-
-    /* Order of basic blocks must have been determined by now */
-
-    if (_PyCfg_ResolveJumps(&g) < 0) {
-        goto error;
-    }
-
-    /* Can't modify the bytecode after computing jump offsets. */
-
-    if (cfg_to_instr_sequence(&g, &optimized_instrs) < 0) {
+    int stackdepth, nlocalsplus;
+    if (_PyCfg_OptimizedCfgToInstructionSequence(g, umd, code_flags,
+                                                 &stackdepth, &nlocalsplus,
+                                                 &optimized_instrs) < 0) {
         goto error;
     }
 
@@ -7642,13 +8047,13 @@ _PyCompile_Assemble(_PyCompile_CodeUnitMetadata *umd, PyObject *filename,
         goto error;
     }
     co = _PyAssemble_MakeCodeObject(umd, const_cache,
-                                    consts, maxdepth, &optimized_instrs,
+                                    consts, stackdepth, &optimized_instrs,
                                     nlocalsplus, code_flags, filename);
     Py_DECREF(consts);
 
 error:
     Py_DECREF(const_cache);
-    _PyCfgBuilder_Fini(&g);
+    _PyCfgBuilder_Free(g);
     instr_sequence_fini(&optimized_instrs);
     return co;
 }
diff --git a/Python/condvar.h b/Python/condvar.h
index 4ddc5311cf8fad..d54db94f2c871d 100644
--- a/Python/condvar.h
+++ b/Python/condvar.h
@@ -41,7 +41,8 @@
 #define _CONDVAR_IMPL_H_
 
 #include "Python.h"
-#include "pycore_condvar.h"
+#include "pycore_pythread.h"      // _POSIX_THREADS
+
 
 #ifdef _POSIX_THREADS
 /*
diff --git a/Python/context.c b/Python/context.c
index 1ffae9871be7b3..c94c014219d0e4 100644
--- a/Python/context.c
+++ b/Python/context.c
@@ -7,7 +7,7 @@
 #include "pycore_object.h"
 #include "pycore_pyerrors.h"
 #include "pycore_pystate.h"       // _PyThreadState_GET()
-#include "structmember.h"         // PyMemberDef
+
 
 
 #include "clinic/context.c.h"
@@ -1042,7 +1042,7 @@ _contextvars_ContextVar_reset(PyContextVar *self, PyObject *token)
 
 
 static PyMemberDef PyContextVar_members[] = {
-    {"name", T_OBJECT, offsetof(PyContextVar, var_name), READONLY},
+    {"name", _Py_T_OBJECT, offsetof(PyContextVar, var_name), Py_READONLY},
     {NULL}
 };
 
@@ -1267,7 +1267,7 @@ PyTypeObject _PyContextTokenMissing_Type = {
 static PyObject *
 get_token_missing(void)
 {
-    return Py_NewRef(&_Py_SINGLETON(context_token_missing));
+    return (PyObject *)&_Py_SINGLETON(context_token_missing);
 }
 
 
diff --git a/Python/critical_section.c b/Python/critical_section.c
new file mode 100644
index 00000000000000..2214d80eeb297b
--- /dev/null
+++ b/Python/critical_section.c
@@ -0,0 +1,100 @@
+#include "Python.h"
+
+#include "pycore_lock.h"
+#include "pycore_critical_section.h"
+
+static_assert(_Alignof(_PyCriticalSection) >= 4,
+              "critical section must be aligned to at least 4 bytes");
+
+void
+_PyCriticalSection_BeginSlow(_PyCriticalSection *c, PyMutex *m)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+    c->mutex = NULL;
+    c->prev = (uintptr_t)tstate->critical_section;
+    tstate->critical_section = (uintptr_t)c;
+
+    _PyMutex_LockSlow(m);
+    c->mutex = m;
+}
+
+void
+_PyCriticalSection2_BeginSlow(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2,
+                              int is_m1_locked)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+    c->base.mutex = NULL;
+    c->mutex2 = NULL;
+    c->base.prev = tstate->critical_section;
+    tstate->critical_section = (uintptr_t)c | _Py_CRITICAL_SECTION_TWO_MUTEXES;
+
+    if (!is_m1_locked) {
+        PyMutex_Lock(m1);
+    }
+    PyMutex_Lock(m2);
+    c->base.mutex = m1;
+    c->mutex2 = m2;
+}
+
+static _PyCriticalSection *
+untag_critical_section(uintptr_t tag)
+{
+    return (_PyCriticalSection *)(tag & ~_Py_CRITICAL_SECTION_MASK);
+}
+
+// Release all locks held by critical sections. This is called by
+// _PyThreadState_Detach.
+void
+_PyCriticalSection_SuspendAll(PyThreadState *tstate)
+{
+    uintptr_t *tagptr = &tstate->critical_section;
+    while (_PyCriticalSection_IsActive(*tagptr)) {
+        _PyCriticalSection *c = untag_critical_section(*tagptr);
+
+        if (c->mutex) {
+            PyMutex_Unlock(c->mutex);
+            if ((*tagptr & _Py_CRITICAL_SECTION_TWO_MUTEXES)) {
+                _PyCriticalSection2 *c2 = (_PyCriticalSection2 *)c;
+                if (c2->mutex2) {
+                    PyMutex_Unlock(c2->mutex2);
+                }
+            }
+        }
+
+        *tagptr |= _Py_CRITICAL_SECTION_INACTIVE;
+        tagptr = &c->prev;
+    }
+}
+
+void
+_PyCriticalSection_Resume(PyThreadState *tstate)
+{
+    uintptr_t p = tstate->critical_section;
+    _PyCriticalSection *c = untag_critical_section(p);
+    assert(!_PyCriticalSection_IsActive(p));
+
+    PyMutex *m1 = c->mutex;
+    c->mutex = NULL;
+
+    PyMutex *m2 = NULL;
+    _PyCriticalSection2 *c2 = NULL;
+    if ((p & _Py_CRITICAL_SECTION_TWO_MUTEXES)) {
+        c2 = (_PyCriticalSection2 *)c;
+        m2 = c2->mutex2;
+        c2->mutex2 = NULL;
+    }
+
+    if (m1) {
+        PyMutex_Lock(m1);
+    }
+    if (m2) {
+        PyMutex_Lock(m2);
+    }
+
+    c->mutex = m1;
+    if (m2) {
+        c2->mutex2 = m2;
+    }
+
+    tstate->critical_section &= ~_Py_CRITICAL_SECTION_INACTIVE;
+}
diff --git a/Python/crossinterp.c b/Python/crossinterp.c
new file mode 100644
index 00000000000000..f74fee38648266
--- /dev/null
+++ b/Python/crossinterp.c
@@ -0,0 +1,2101 @@
+
+/* API for managing interactions between isolated interpreters */
+
+#include "Python.h"
+#include "pycore_ceval.h"         // _Py_simple_func
+#include "pycore_crossinterp.h"   // struct _xid
+#include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_namespace.h"     //_PyNamespace_New()
+#include "pycore_pyerrors.h"      // _PyErr_Clear()
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_typeobject.h"    // _PyType_GetModuleName()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
+
+
+/***************************/
+/* cross-interpreter calls */
+/***************************/
+
+int
+_Py_CallInInterpreter(PyInterpreterState *interp,
+                      _Py_simple_func func, void *arg)
+{
+    if (interp == _PyThreadState_GetCurrent()->interp) {
+        return func(arg);
+    }
+    // XXX Emit a warning if this fails?
+    _PyEval_AddPendingCall(interp, (_Py_pending_call_func)func, arg, 0);
+    return 0;
+}
+
+int
+_Py_CallInInterpreterAndRawFree(PyInterpreterState *interp,
+                                _Py_simple_func func, void *arg)
+{
+    if (interp == _PyThreadState_GetCurrent()->interp) {
+        int res = func(arg);
+        PyMem_RawFree(arg);
+        return res;
+    }
+    // XXX Emit a warning if this fails?
+    _PyEval_AddPendingCall(interp, func, arg, _Py_PENDING_RAWFREE);
+    return 0;
+}
+
+
+/**************************/
+/* cross-interpreter data */
+/**************************/
+
+_PyCrossInterpreterData *
+_PyCrossInterpreterData_New(void)
+{
+    _PyCrossInterpreterData *xid = PyMem_RawMalloc(
+                                            sizeof(_PyCrossInterpreterData));
+    if (xid == NULL) {
+        PyErr_NoMemory();
+    }
+    return xid;
+}
+
+void
+_PyCrossInterpreterData_Free(_PyCrossInterpreterData *xid)
+{
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    _PyCrossInterpreterData_Clear(interp, xid);
+    PyMem_RawFree(xid);
+}
+
+
+/* exceptions */
+
+static PyStatus
+_init_not_shareable_error_type(PyInterpreterState *interp)
+{
+    const char *name = "_interpreters.NotShareableError";
+    PyObject *base = PyExc_ValueError;
+    PyObject *ns = NULL;
+    PyObject *exctype = PyErr_NewException(name, base, ns);
+    if (exctype == NULL) {
+        PyErr_Clear();
+        return _PyStatus_ERR("could not initialize NotShareableError");
+    }
+
+    interp->xi.PyExc_NotShareableError = exctype;
+    return _PyStatus_OK();
+}
+
+static void
+_fini_not_shareable_error_type(PyInterpreterState *interp)
+{
+    Py_CLEAR(interp->xi.PyExc_NotShareableError);
+}
+
+static PyObject *
+_get_not_shareable_error_type(PyInterpreterState *interp)
+{
+    assert(interp->xi.PyExc_NotShareableError != NULL);
+    return interp->xi.PyExc_NotShareableError;
+}
+
+
+/* defining cross-interpreter data */
+
+static inline void
+_xidata_init(_PyCrossInterpreterData *data)
+{
+    // If the value is being reused
+    // then _xidata_clear() should have been called already.
+    assert(data->data == NULL);
+    assert(data->obj == NULL);
+    *data = (_PyCrossInterpreterData){0};
+    data->interpid = -1;
+}
+
+static inline void
+_xidata_clear(_PyCrossInterpreterData *data)
+{
+    // _PyCrossInterpreterData only has two members that need to be
+    // cleaned up, if set: "data" must be freed and "obj" must be decref'ed.
+    // In both cases the original (owning) interpreter must be used,
+    // which is the caller's responsibility to ensure.
+    if (data->data != NULL) {
+        if (data->free != NULL) {
+            data->free(data->data);
+        }
+        data->data = NULL;
+    }
+    Py_CLEAR(data->obj);
+}
+
+void
+_PyCrossInterpreterData_Init(_PyCrossInterpreterData *data,
+                             PyInterpreterState *interp,
+                             void *shared, PyObject *obj,
+                             xid_newobjectfunc new_object)
+{
+    assert(data != NULL);
+    assert(new_object != NULL);
+    _xidata_init(data);
+    data->data = shared;
+    if (obj != NULL) {
+        assert(interp != NULL);
+        // released in _PyCrossInterpreterData_Clear()
+        data->obj = Py_NewRef(obj);
+    }
+    // Ideally every object would know its owning interpreter.
+    // Until then, we have to rely on the caller to identify it
+    // (but we don't need it in all cases).
+    data->interpid = (interp != NULL) ? interp->id : -1;
+    data->new_object = new_object;
+}
+
+int
+_PyCrossInterpreterData_InitWithSize(_PyCrossInterpreterData *data,
+                                     PyInterpreterState *interp,
+                                     const size_t size, PyObject *obj,
+                                     xid_newobjectfunc new_object)
+{
+    assert(size > 0);
+    // For now we always free the shared data in the same interpreter
+    // where it was allocated, so the interpreter is required.
+    assert(interp != NULL);
+    _PyCrossInterpreterData_Init(data, interp, NULL, obj, new_object);
+    data->data = PyMem_RawMalloc(size);
+    if (data->data == NULL) {
+        return -1;
+    }
+    data->free = PyMem_RawFree;
+    return 0;
+}
+
+void
+_PyCrossInterpreterData_Clear(PyInterpreterState *interp,
+                              _PyCrossInterpreterData *data)
+{
+    assert(data != NULL);
+    // This must be called in the owning interpreter.
+    assert(interp == NULL
+           || data->interpid == -1
+           || data->interpid == interp->id);
+    _xidata_clear(data);
+}
+
+
+/* using cross-interpreter data */
+
+static int
+_check_xidata(PyThreadState *tstate, _PyCrossInterpreterData *data)
+{
+    // data->data can be anything, including NULL, so we don't check it.
+
+    // data->obj may be NULL, so we don't check it.
+
+    if (data->interpid < 0) {
+        _PyErr_SetString(tstate, PyExc_SystemError, "missing interp");
+        return -1;
+    }
+
+    if (data->new_object == NULL) {
+        _PyErr_SetString(tstate, PyExc_SystemError, "missing new_object func");
+        return -1;
+    }
+
+    // data->free may be NULL, so we don't check it.
+
+    return 0;
+}
+
+static crossinterpdatafunc _lookup_getdata_from_registry(
+                                            PyInterpreterState *, PyObject *);
+
+static crossinterpdatafunc
+_lookup_getdata(PyInterpreterState *interp, PyObject *obj)
+{
+   /* Cross-interpreter objects are looked up by exact match on the class.
+      We can reassess this policy when we move from a global registry to a
+      tp_* slot. */
+    return _lookup_getdata_from_registry(interp, obj);
+}
+
+crossinterpdatafunc
+_PyCrossInterpreterData_Lookup(PyObject *obj)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    return _lookup_getdata(interp, obj);
+}
+
+static inline void
+_set_xid_lookup_failure(PyInterpreterState *interp,
+                        PyObject *obj, const char *msg)
+{
+    PyObject *exctype = _get_not_shareable_error_type(interp);
+    assert(exctype != NULL);
+    if (msg != NULL) {
+        assert(obj == NULL);
+        PyErr_SetString(exctype, msg);
+    }
+    else if (obj == NULL) {
+        PyErr_SetString(exctype,
+                        "object does not support cross-interpreter data");
+    }
+    else {
+        PyErr_Format(exctype,
+                     "%S does not support cross-interpreter data", obj);
+    }
+}
+
+int
+_PyObject_CheckCrossInterpreterData(PyObject *obj)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    crossinterpdatafunc getdata = _lookup_getdata(interp, obj);
+    if (getdata == NULL) {
+        if (!PyErr_Occurred()) {
+            _set_xid_lookup_failure(interp, obj, NULL);
+        }
+        return -1;
+    }
+    return 0;
+}
+
+int
+_PyObject_GetCrossInterpreterData(PyObject *obj, _PyCrossInterpreterData *data)
+{
+    PyThreadState *tstate = _PyThreadState_GetCurrent();
+#ifdef Py_DEBUG
+    // The caller must hold the GIL
+    _Py_EnsureTstateNotNULL(tstate);
+#endif
+    PyInterpreterState *interp = tstate->interp;
+
+    // Reset data before re-populating.
+    *data = (_PyCrossInterpreterData){0};
+    data->interpid = -1;
+
+    // Call the "getdata" func for the object.
+    Py_INCREF(obj);
+    crossinterpdatafunc getdata = _lookup_getdata(interp, obj);
+    if (getdata == NULL) {
+        Py_DECREF(obj);
+        if (!PyErr_Occurred()) {
+            _set_xid_lookup_failure(interp, obj, NULL);
+        }
+        return -1;
+    }
+    int res = getdata(tstate, obj, data);
+    Py_DECREF(obj);
+    if (res != 0) {
+        return -1;
+    }
+
+    // Fill in the blanks and validate the result.
+    data->interpid = interp->id;
+    if (_check_xidata(tstate, data) != 0) {
+        (void)_PyCrossInterpreterData_Release(data);
+        return -1;
+    }
+
+    return 0;
+}
+
+PyObject *
+_PyCrossInterpreterData_NewObject(_PyCrossInterpreterData *data)
+{
+    return data->new_object(data);
+}
+
+static int
+_call_clear_xidata(void *data)
+{
+    _xidata_clear((_PyCrossInterpreterData *)data);
+    return 0;
+}
+
+static int
+_xidata_release(_PyCrossInterpreterData *data, int rawfree)
+{
+    if ((data->data == NULL || data->free == NULL) && data->obj == NULL) {
+        // Nothing to release!
+        if (rawfree) {
+            PyMem_RawFree(data);
+        }
+        else {
+            data->data = NULL;
+        }
+        return 0;
+    }
+
+    // Switch to the original interpreter.
+    PyInterpreterState *interp = _PyInterpreterState_LookUpID(data->interpid);
+    if (interp == NULL) {
+        // The interpreter was already destroyed.
+        // This function shouldn't have been called.
+        // XXX Someone leaked some memory...
+        assert(PyErr_Occurred());
+        if (rawfree) {
+            PyMem_RawFree(data);
+        }
+        return -1;
+    }
+
+    // "Release" the data and/or the object.
+    if (rawfree) {
+        return _Py_CallInInterpreterAndRawFree(interp, _call_clear_xidata, data);
+    }
+    else {
+        return _Py_CallInInterpreter(interp, _call_clear_xidata, data);
+    }
+}
+
+int
+_PyCrossInterpreterData_Release(_PyCrossInterpreterData *data)
+{
+    return _xidata_release(data, 0);
+}
+
+int
+_PyCrossInterpreterData_ReleaseAndRawFree(_PyCrossInterpreterData *data)
+{
+    return _xidata_release(data, 1);
+}
+
+
+/* registry of {type -> crossinterpdatafunc} */
+
+/* For now we use a global registry of shareable classes.  An
+   alternative would be to add a tp_* slot for a class's
+   crossinterpdatafunc. It would be simpler and more efficient. */
+
+static inline struct _xidregistry *
+_get_global_xidregistry(_PyRuntimeState *runtime)
+{
+    return &runtime->xi.registry;
+}
+
+static inline struct _xidregistry *
+_get_xidregistry(PyInterpreterState *interp)
+{
+    return &interp->xi.registry;
+}
+
+static inline struct _xidregistry *
+_get_xidregistry_for_type(PyInterpreterState *interp, PyTypeObject *cls)
+{
+    struct _xidregistry *registry = _get_global_xidregistry(interp->runtime);
+    if (cls->tp_flags & Py_TPFLAGS_HEAPTYPE) {
+        registry = _get_xidregistry(interp);
+    }
+    return registry;
+}
+
+static int
+_xidregistry_add_type(struct _xidregistry *xidregistry,
+                      PyTypeObject *cls, crossinterpdatafunc getdata)
+{
+    struct _xidregitem *newhead = PyMem_RawMalloc(sizeof(struct _xidregitem));
+    if (newhead == NULL) {
+        return -1;
+    }
+    *newhead = (struct _xidregitem){
+        // We do not keep a reference, to avoid keeping the class alive.
+        .cls = cls,
+        .refcount = 1,
+        .getdata = getdata,
+    };
+    if (cls->tp_flags & Py_TPFLAGS_HEAPTYPE) {
+        // XXX Assign a callback to clear the entry from the registry?
+        newhead->weakref = PyWeakref_NewRef((PyObject *)cls, NULL);
+        if (newhead->weakref == NULL) {
+            PyMem_RawFree(newhead);
+            return -1;
+        }
+    }
+    newhead->next = xidregistry->head;
+    if (newhead->next != NULL) {
+        newhead->next->prev = newhead;
+    }
+    xidregistry->head = newhead;
+    return 0;
+}
+
+static struct _xidregitem *
+_xidregistry_remove_entry(struct _xidregistry *xidregistry,
+                          struct _xidregitem *entry)
+{
+    struct _xidregitem *next = entry->next;
+    if (entry->prev != NULL) {
+        assert(entry->prev->next == entry);
+        entry->prev->next = next;
+    }
+    else {
+        assert(xidregistry->head == entry);
+        xidregistry->head = next;
+    }
+    if (next != NULL) {
+        next->prev = entry->prev;
+    }
+    Py_XDECREF(entry->weakref);
+    PyMem_RawFree(entry);
+    return next;
+}
+
+static void
+_xidregistry_clear(struct _xidregistry *xidregistry)
+{
+    struct _xidregitem *cur = xidregistry->head;
+    xidregistry->head = NULL;
+    while (cur != NULL) {
+        struct _xidregitem *next = cur->next;
+        Py_XDECREF(cur->weakref);
+        PyMem_RawFree(cur);
+        cur = next;
+    }
+}
+
+static void
+_xidregistry_lock(struct _xidregistry *registry)
+{
+    if (registry->global) {
+        PyMutex_Lock(&registry->mutex);
+    }
+    // else: Within an interpreter we rely on the GIL instead of a separate lock.
+}
+
+static void
+_xidregistry_unlock(struct _xidregistry *registry)
+{
+    if (registry->global) {
+        PyMutex_Unlock(&registry->mutex);
+    }
+}
+
+static struct _xidregitem *
+_xidregistry_find_type(struct _xidregistry *xidregistry, PyTypeObject *cls)
+{
+    struct _xidregitem *cur = xidregistry->head;
+    while (cur != NULL) {
+        if (cur->weakref != NULL) {
+            // cur is/was a heap type.
+            PyObject *registered = _PyWeakref_GET_REF(cur->weakref);
+            if (registered == NULL) {
+                // The weakly ref'ed object was freed.
+                cur = _xidregistry_remove_entry(xidregistry, cur);
+                continue;
+            }
+            assert(PyType_Check(registered));
+            assert(cur->cls == (PyTypeObject *)registered);
+            assert(cur->cls->tp_flags & Py_TPFLAGS_HEAPTYPE);
+            Py_DECREF(registered);
+        }
+        if (cur->cls == cls) {
+            return cur;
+        }
+        cur = cur->next;
+    }
+    return NULL;
+}
+
+int
+_PyCrossInterpreterData_RegisterClass(PyTypeObject *cls,
+                                      crossinterpdatafunc getdata)
+{
+    if (!PyType_Check(cls)) {
+        PyErr_Format(PyExc_ValueError, "only classes may be registered");
+        return -1;
+    }
+    if (getdata == NULL) {
+        PyErr_Format(PyExc_ValueError, "missing 'getdata' func");
+        return -1;
+    }
+
+    int res = 0;
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    struct _xidregistry *xidregistry = _get_xidregistry_for_type(interp, cls);
+    _xidregistry_lock(xidregistry);
+
+    struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
+    if (matched != NULL) {
+        assert(matched->getdata == getdata);
+        matched->refcount += 1;
+        goto finally;
+    }
+
+    res = _xidregistry_add_type(xidregistry, cls, getdata);
+
+finally:
+    _xidregistry_unlock(xidregistry);
+    return res;
+}
+
+int
+_PyCrossInterpreterData_UnregisterClass(PyTypeObject *cls)
+{
+    int res = 0;
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    struct _xidregistry *xidregistry = _get_xidregistry_for_type(interp, cls);
+    _xidregistry_lock(xidregistry);
+
+    struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
+    if (matched != NULL) {
+        assert(matched->refcount > 0);
+        matched->refcount -= 1;
+        if (matched->refcount == 0) {
+            (void)_xidregistry_remove_entry(xidregistry, matched);
+        }
+        res = 1;
+    }
+
+    _xidregistry_unlock(xidregistry);
+    return res;
+}
+
+static crossinterpdatafunc
+_lookup_getdata_from_registry(PyInterpreterState *interp, PyObject *obj)
+{
+    PyTypeObject *cls = Py_TYPE(obj);
+
+    struct _xidregistry *xidregistry = _get_xidregistry_for_type(interp, cls);
+    _xidregistry_lock(xidregistry);
+
+    struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
+    crossinterpdatafunc func = matched != NULL ? matched->getdata : NULL;
+
+    _xidregistry_unlock(xidregistry);
+    return func;
+}
+
+/* cross-interpreter data for builtin types */
+
+// bytes
+
+struct _shared_bytes_data {
+    char *bytes;
+    Py_ssize_t len;
+};
+
+static PyObject *
+_new_bytes_object(_PyCrossInterpreterData *data)
+{
+    struct _shared_bytes_data *shared = (struct _shared_bytes_data *)(data->data);
+    return PyBytes_FromStringAndSize(shared->bytes, shared->len);
+}
+
+static int
+_bytes_shared(PyThreadState *tstate, PyObject *obj,
+              _PyCrossInterpreterData *data)
+{
+    if (_PyCrossInterpreterData_InitWithSize(
+            data, tstate->interp, sizeof(struct _shared_bytes_data), obj,
+            _new_bytes_object
+            ) < 0)
+    {
+        return -1;
+    }
+    struct _shared_bytes_data *shared = (struct _shared_bytes_data *)data->data;
+    if (PyBytes_AsStringAndSize(obj, &shared->bytes, &shared->len) < 0) {
+        _PyCrossInterpreterData_Clear(tstate->interp, data);
+        return -1;
+    }
+    return 0;
+}
+
+// str
+
+struct _shared_str_data {
+    int kind;
+    const void *buffer;
+    Py_ssize_t len;
+};
+
+static PyObject *
+_new_str_object(_PyCrossInterpreterData *data)
+{
+    struct _shared_str_data *shared = (struct _shared_str_data *)(data->data);
+    return PyUnicode_FromKindAndData(shared->kind, shared->buffer, shared->len);
+}
+
+static int
+_str_shared(PyThreadState *tstate, PyObject *obj,
+            _PyCrossInterpreterData *data)
+{
+    if (_PyCrossInterpreterData_InitWithSize(
+            data, tstate->interp, sizeof(struct _shared_str_data), obj,
+            _new_str_object
+            ) < 0)
+    {
+        return -1;
+    }
+    struct _shared_str_data *shared = (struct _shared_str_data *)data->data;
+    shared->kind = PyUnicode_KIND(obj);
+    shared->buffer = PyUnicode_DATA(obj);
+    shared->len = PyUnicode_GET_LENGTH(obj);
+    return 0;
+}
+
+// int
+
+static PyObject *
+_new_long_object(_PyCrossInterpreterData *data)
+{
+    return PyLong_FromSsize_t((Py_ssize_t)(data->data));
+}
+
+static int
+_long_shared(PyThreadState *tstate, PyObject *obj,
+             _PyCrossInterpreterData *data)
+{
+    /* Note that this means the size of shareable ints is bounded by
+     * sys.maxsize.  Hence on 32-bit architectures that is half the
+     * size of maximum shareable ints on 64-bit.
+     */
+    Py_ssize_t value = PyLong_AsSsize_t(obj);
+    if (value == -1 && PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
+            PyErr_SetString(PyExc_OverflowError, "try sending as bytes");
+        }
+        return -1;
+    }
+    _PyCrossInterpreterData_Init(data, tstate->interp, (void *)value, NULL,
+            _new_long_object);
+    // data->obj and data->free remain NULL
+    return 0;
+}
+
+// float
+
+static PyObject *
+_new_float_object(_PyCrossInterpreterData *data)
+{
+    double * value_ptr = data->data;
+    return PyFloat_FromDouble(*value_ptr);
+}
+
+static int
+_float_shared(PyThreadState *tstate, PyObject *obj,
+             _PyCrossInterpreterData *data)
+{
+    if (_PyCrossInterpreterData_InitWithSize(
+            data, tstate->interp, sizeof(double), NULL,
+            _new_float_object
+            ) < 0)
+    {
+        return -1;
+    }
+    double *shared = (double *)data->data;
+    *shared = PyFloat_AsDouble(obj);
+    return 0;
+}
+
+// None
+
+static PyObject *
+_new_none_object(_PyCrossInterpreterData *data)
+{
+    // XXX Singleton refcounts are problematic across interpreters...
+    return Py_NewRef(Py_None);
+}
+
+static int
+_none_shared(PyThreadState *tstate, PyObject *obj,
+             _PyCrossInterpreterData *data)
+{
+    _PyCrossInterpreterData_Init(data, tstate->interp, NULL, NULL,
+            _new_none_object);
+    // data->data, data->obj and data->free remain NULL
+    return 0;
+}
+
+// bool
+
+static PyObject *
+_new_bool_object(_PyCrossInterpreterData *data)
+{
+    if (data->data){
+        Py_RETURN_TRUE;
+    }
+    Py_RETURN_FALSE;
+}
+
+static int
+_bool_shared(PyThreadState *tstate, PyObject *obj,
+             _PyCrossInterpreterData *data)
+{
+    _PyCrossInterpreterData_Init(data, tstate->interp,
+            (void *) (Py_IsTrue(obj) ? (uintptr_t) 1 : (uintptr_t) 0), NULL,
+            _new_bool_object);
+    // data->obj and data->free remain NULL
+    return 0;
+}
+
+// tuple
+
+struct _shared_tuple_data {
+    Py_ssize_t len;
+    _PyCrossInterpreterData **data;
+};
+
+static PyObject *
+_new_tuple_object(_PyCrossInterpreterData *data)
+{
+    struct _shared_tuple_data *shared = (struct _shared_tuple_data *)(data->data);
+    PyObject *tuple = PyTuple_New(shared->len);
+    if (tuple == NULL) {
+        return NULL;
+    }
+
+    for (Py_ssize_t i = 0; i < shared->len; i++) {
+        PyObject *item = _PyCrossInterpreterData_NewObject(shared->data[i]);
+        if (item == NULL){
+            Py_DECREF(tuple);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(tuple, i, item);
+    }
+    return tuple;
+}
+
+static void
+_tuple_shared_free(void* data)
+{
+    struct _shared_tuple_data *shared = (struct _shared_tuple_data *)(data);
+#ifndef NDEBUG
+    int64_t interpid = PyInterpreterState_GetID(_PyInterpreterState_GET());
+#endif
+    for (Py_ssize_t i = 0; i < shared->len; i++) {
+        if (shared->data[i] != NULL) {
+            assert(shared->data[i]->interpid == interpid);
+            _PyCrossInterpreterData_Release(shared->data[i]);
+            PyMem_RawFree(shared->data[i]);
+            shared->data[i] = NULL;
+        }
+    }
+    PyMem_Free(shared->data);
+    PyMem_RawFree(shared);
+}
+
+static int
+_tuple_shared(PyThreadState *tstate, PyObject *obj,
+             _PyCrossInterpreterData *data)
+{
+    Py_ssize_t len = PyTuple_GET_SIZE(obj);
+    if (len < 0) {
+        return -1;
+    }
+    struct _shared_tuple_data *shared = PyMem_RawMalloc(sizeof(struct _shared_tuple_data));
+    if (shared == NULL){
+        PyErr_NoMemory();
+        return -1;
+    }
+
+    shared->len = len;
+    shared->data = (_PyCrossInterpreterData **) PyMem_Calloc(shared->len, sizeof(_PyCrossInterpreterData *));
+    if (shared->data == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
+    for (Py_ssize_t i = 0; i < shared->len; i++) {
+        _PyCrossInterpreterData *data = _PyCrossInterpreterData_New();
+        if (data == NULL) {
+            goto error;  // PyErr_NoMemory already set
+        }
+        PyObject *item = PyTuple_GET_ITEM(obj, i);
+
+        int res = -1;
+        if (!_Py_EnterRecursiveCallTstate(tstate, " while sharing a tuple")) {
+            res = _PyObject_GetCrossInterpreterData(item, data);
+            _Py_LeaveRecursiveCallTstate(tstate);
+        }
+        if (res < 0) {
+            PyMem_RawFree(data);
+            goto error;
+        }
+        shared->data[i] = data;
+    }
+    _PyCrossInterpreterData_Init(
+            data, tstate->interp, shared, obj, _new_tuple_object);
+    data->free = _tuple_shared_free;
+    return 0;
+
+error:
+    _tuple_shared_free(shared);
+    return -1;
+}
+
+// registration
+
+static void
+_register_builtins_for_crossinterpreter_data(struct _xidregistry *xidregistry)
+{
+    // None
+    if (_xidregistry_add_type(xidregistry, (PyTypeObject *)PyObject_Type(Py_None), _none_shared) != 0) {
+        Py_FatalError("could not register None for cross-interpreter sharing");
+    }
+
+    // int
+    if (_xidregistry_add_type(xidregistry, &PyLong_Type, _long_shared) != 0) {
+        Py_FatalError("could not register int for cross-interpreter sharing");
+    }
+
+    // bytes
+    if (_xidregistry_add_type(xidregistry, &PyBytes_Type, _bytes_shared) != 0) {
+        Py_FatalError("could not register bytes for cross-interpreter sharing");
+    }
+
+    // str
+    if (_xidregistry_add_type(xidregistry, &PyUnicode_Type, _str_shared) != 0) {
+        Py_FatalError("could not register str for cross-interpreter sharing");
+    }
+
+    // bool
+    if (_xidregistry_add_type(xidregistry, &PyBool_Type, _bool_shared) != 0) {
+        Py_FatalError("could not register bool for cross-interpreter sharing");
+    }
+
+    // float
+    if (_xidregistry_add_type(xidregistry, &PyFloat_Type, _float_shared) != 0) {
+        Py_FatalError("could not register float for cross-interpreter sharing");
+    }
+
+    // tuple
+    if (_xidregistry_add_type(xidregistry, &PyTuple_Type, _tuple_shared) != 0) {
+        Py_FatalError("could not register tuple for cross-interpreter sharing");
+    }
+}
+
+/* registry lifecycle */
+
+static void
+_xidregistry_init(struct _xidregistry *registry)
+{
+    if (registry->initialized) {
+        return;
+    }
+    registry->initialized = 1;
+
+    if (registry->global) {
+        // Registering the builtins is cheap so we don't bother doing it lazily.
+        assert(registry->head == NULL);
+        _register_builtins_for_crossinterpreter_data(registry);
+    }
+}
+
+static void
+_xidregistry_fini(struct _xidregistry *registry)
+{
+    if (!registry->initialized) {
+        return;
+    }
+    registry->initialized = 0;
+
+    _xidregistry_clear(registry);
+}
+
+
+/*************************/
+/* convenience utilities */
+/*************************/
+
+static const char *
+_copy_string_obj_raw(PyObject *strobj)
+{
+    const char *str = PyUnicode_AsUTF8(strobj);
+    if (str == NULL) {
+        return NULL;
+    }
+
+    char *copied = PyMem_RawMalloc(strlen(str)+1);
+    if (copied == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    strcpy(copied, str);
+    return copied;
+}
+
+static int
+_release_xid_data(_PyCrossInterpreterData *data, int rawfree)
+{
+    PyObject *exc = PyErr_GetRaisedException();
+    int res = rawfree
+        ? _PyCrossInterpreterData_Release(data)
+        : _PyCrossInterpreterData_ReleaseAndRawFree(data);
+    if (res < 0) {
+        /* The owning interpreter is already destroyed. */
+        _PyCrossInterpreterData_Clear(NULL, data);
+        // XXX Emit a warning?
+        PyErr_Clear();
+    }
+    PyErr_SetRaisedException(exc);
+    return res;
+}
+
+
+/***********************/
+/* exception snapshots */
+/***********************/
+
+static int
+_excinfo_init_type(struct _excinfo_type *info, PyObject *exc)
+{
+    /* Note that this copies directly rather than into an intermediate
+       struct and does not clear on error.  If we need that then we
+       should have a separate function to wrap this one
+       and do all that there. */
+    PyObject *strobj = NULL;
+
+    PyTypeObject *type = Py_TYPE(exc);
+    if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
+        assert(_Py_IsImmortal((PyObject *)type));
+        info->builtin = type;
+    }
+    else {
+        // Only builtin types are preserved.
+        info->builtin = NULL;
+    }
+
+    // __name__
+    strobj = PyType_GetName(type);
+    if (strobj == NULL) {
+        return -1;
+    }
+    info->name = _copy_string_obj_raw(strobj);
+    Py_DECREF(strobj);
+    if (info->name == NULL) {
+        return -1;
+    }
+
+    // __qualname__
+    strobj = PyType_GetQualName(type);
+    if (strobj == NULL) {
+        return -1;
+    }
+    info->qualname = _copy_string_obj_raw(strobj);
+    Py_DECREF(strobj);
+    if (info->name == NULL) {
+        return -1;
+    }
+
+    // __module__
+    strobj = _PyType_GetModuleName(type);
+    if (strobj == NULL) {
+        return -1;
+    }
+    info->module = _copy_string_obj_raw(strobj);
+    Py_DECREF(strobj);
+    if (info->name == NULL) {
+        return -1;
+    }
+
+    return 0;
+}
+
+static void
+_excinfo_clear_type(struct _excinfo_type *info)
+{
+    if (info->builtin != NULL) {
+        assert(info->builtin->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN);
+        assert(_Py_IsImmortal((PyObject *)info->builtin));
+    }
+    if (info->name != NULL) {
+        PyMem_RawFree((void *)info->name);
+    }
+    if (info->qualname != NULL) {
+        PyMem_RawFree((void *)info->qualname);
+    }
+    if (info->module != NULL) {
+        PyMem_RawFree((void *)info->module);
+    }
+    *info = (struct _excinfo_type){NULL};
+}
+
+static void
+_excinfo_normalize_type(struct _excinfo_type *info,
+                        const char **p_module, const char **p_qualname)
+{
+    if (info->name == NULL) {
+        assert(info->builtin == NULL);
+        assert(info->qualname == NULL);
+        assert(info->module == NULL);
+        // This is inspired by TracebackException.format_exception_only().
+        *p_module = NULL;
+        *p_qualname = NULL;
+        return;
+    }
+
+    const char *module = info->module;
+    const char *qualname = info->qualname;
+    if (qualname == NULL) {
+        qualname = info->name;
+    }
+    assert(module != NULL);
+    if (strcmp(module, "builtins") == 0) {
+        module = NULL;
+    }
+    else if (strcmp(module, "__main__") == 0) {
+        module = NULL;
+    }
+    *p_qualname = qualname;
+    *p_module = module;
+}
+
+static void
+_PyXI_excinfo_Clear(_PyXI_excinfo *info)
+{
+    _excinfo_clear_type(&info->type);
+    if (info->msg != NULL) {
+        PyMem_RawFree((void *)info->msg);
+    }
+    *info = (_PyXI_excinfo){{NULL}};
+}
+
+static PyObject *
+_PyXI_excinfo_format(_PyXI_excinfo *info)
+{
+    const char *module, *qualname;
+    _excinfo_normalize_type(&info->type, &module, &qualname);
+    if (qualname != NULL) {
+        if (module != NULL) {
+            if (info->msg != NULL) {
+                return PyUnicode_FromFormat("%s.%s: %s",
+                                            module, qualname, info->msg);
+            }
+            else {
+                return PyUnicode_FromFormat("%s.%s", module, qualname);
+            }
+        }
+        else {
+            if (info->msg != NULL) {
+                return PyUnicode_FromFormat("%s: %s", qualname, info->msg);
+            }
+            else {
+                return PyUnicode_FromString(qualname);
+            }
+        }
+    }
+    else if (info->msg != NULL) {
+        return PyUnicode_FromString(info->msg);
+    }
+    else {
+        Py_RETURN_NONE;
+    }
+}
+
+static const char *
+_PyXI_excinfo_InitFromException(_PyXI_excinfo *info, PyObject *exc)
+{
+    assert(exc != NULL);
+
+    if (PyErr_GivenExceptionMatches(exc, PyExc_MemoryError)) {
+        _PyXI_excinfo_Clear(info);
+        return NULL;
+    }
+    const char *failure = NULL;
+
+    if (_excinfo_init_type(&info->type, exc) < 0) {
+        failure = "error while initializing exception type snapshot";
+        goto error;
+    }
+
+    // Extract the exception message.
+    PyObject *msgobj = PyObject_Str(exc);
+    if (msgobj == NULL) {
+        failure = "error while formatting exception";
+        goto error;
+    }
+    info->msg = _copy_string_obj_raw(msgobj);
+    Py_DECREF(msgobj);
+    if (info->msg == NULL) {
+        failure = "error while copying exception message";
+        goto error;
+    }
+
+    return NULL;
+
+error:
+    assert(failure != NULL);
+    _PyXI_excinfo_Clear(info);
+    return failure;
+}
+
+static void
+_PyXI_excinfo_Apply(_PyXI_excinfo *info, PyObject *exctype)
+{
+    PyObject *formatted = _PyXI_excinfo_format(info);
+    PyErr_SetObject(exctype, formatted);
+    Py_DECREF(formatted);
+}
+
+static PyObject *
+_PyXI_excinfo_TypeAsObject(_PyXI_excinfo *info)
+{
+    PyObject *ns = _PyNamespace_New(NULL);
+    if (ns == NULL) {
+        return NULL;
+    }
+    int empty = 1;
+
+    if (info->type.name != NULL) {
+        PyObject *name = PyUnicode_FromString(info->type.name);
+        if (name == NULL) {
+            goto error;
+        }
+        int res = PyObject_SetAttrString(ns, "__name__", name);
+        Py_DECREF(name);
+        if (res < 0) {
+            goto error;
+        }
+        empty = 0;
+    }
+
+    if (info->type.qualname != NULL) {
+        PyObject *qualname = PyUnicode_FromString(info->type.qualname);
+        if (qualname == NULL) {
+            goto error;
+        }
+        int res = PyObject_SetAttrString(ns, "__qualname__", qualname);
+        Py_DECREF(qualname);
+        if (res < 0) {
+            goto error;
+        }
+        empty = 0;
+    }
+
+    if (info->type.module != NULL) {
+        PyObject *module = PyUnicode_FromString(info->type.module);
+        if (module == NULL) {
+            goto error;
+        }
+        int res = PyObject_SetAttrString(ns, "__module__", module);
+        Py_DECREF(module);
+        if (res < 0) {
+            goto error;
+        }
+        empty = 0;
+    }
+
+    if (empty) {
+        Py_CLEAR(ns);
+    }
+
+    return ns;
+
+error:
+    Py_DECREF(ns);
+    return NULL;
+}
+
+static PyObject *
+_PyXI_excinfo_AsObject(_PyXI_excinfo *info)
+{
+    PyObject *ns = _PyNamespace_New(NULL);
+    if (ns == NULL) {
+        return NULL;
+    }
+    int res;
+
+    PyObject *type = _PyXI_excinfo_TypeAsObject(info);
+    if (type == NULL) {
+        if (PyErr_Occurred()) {
+            goto error;
+        }
+        type = Py_NewRef(Py_None);
+    }
+    res = PyObject_SetAttrString(ns, "type", type);
+    Py_DECREF(type);
+    if (res < 0) {
+        goto error;
+    }
+
+    PyObject *msg = info->msg != NULL
+        ? PyUnicode_FromString(info->msg)
+        : Py_NewRef(Py_None);
+    if (msg == NULL) {
+        goto error;
+    }
+    res = PyObject_SetAttrString(ns, "msg", msg);
+    Py_DECREF(msg);
+    if (res < 0) {
+        goto error;
+    }
+
+    PyObject *formatted = _PyXI_excinfo_format(info);
+    if (formatted == NULL) {
+        goto error;
+    }
+    res = PyObject_SetAttrString(ns, "formatted", formatted);
+    Py_DECREF(formatted);
+    if (res < 0) {
+        goto error;
+    }
+
+    return ns;
+
+error:
+    Py_DECREF(ns);
+    return NULL;
+}
+
+
+/***************************/
+/* short-term data sharing */
+/***************************/
+
+/* error codes */
+
+static int
+_PyXI_ApplyErrorCode(_PyXI_errcode code, PyInterpreterState *interp)
+{
+    assert(!PyErr_Occurred());
+    switch (code) {
+    case _PyXI_ERR_NO_ERROR:  // fall through
+    case _PyXI_ERR_UNCAUGHT_EXCEPTION:
+        // There is nothing to apply.
+#ifdef Py_DEBUG
+        Py_UNREACHABLE();
+#endif
+        return 0;
+    case _PyXI_ERR_OTHER:
+        // XXX msg?
+        PyErr_SetNone(PyExc_RuntimeError);
+        break;
+    case _PyXI_ERR_NO_MEMORY:
+        PyErr_NoMemory();
+        break;
+    case _PyXI_ERR_ALREADY_RUNNING:
+        assert(interp != NULL);
+        assert(_PyInterpreterState_IsRunningMain(interp));
+        _PyInterpreterState_FailIfRunningMain(interp);
+        break;
+    case _PyXI_ERR_MAIN_NS_FAILURE:
+        PyErr_SetString(PyExc_RuntimeError,
+                        "failed to get __main__ namespace");
+        break;
+    case _PyXI_ERR_APPLY_NS_FAILURE:
+        PyErr_SetString(PyExc_RuntimeError,
+                        "failed to apply namespace to __main__");
+        break;
+    case _PyXI_ERR_NOT_SHAREABLE:
+        _set_xid_lookup_failure(interp, NULL, NULL);
+        break;
+    default:
+#ifdef Py_DEBUG
+        Py_UNREACHABLE();
+#else
+        PyErr_Format(PyExc_RuntimeError, "unsupported error code %d", code);
+#endif
+    }
+    assert(PyErr_Occurred());
+    return -1;
+}
+
+/* shared exceptions */
+
+static const char *
+_PyXI_InitError(_PyXI_error *error, PyObject *excobj, _PyXI_errcode code)
+{
+    if (error->interp == NULL) {
+        error->interp = PyInterpreterState_Get();
+    }
+
+    const char *failure = NULL;
+    if (code == _PyXI_ERR_UNCAUGHT_EXCEPTION) {
+        // There is an unhandled exception we need to propagate.
+        failure = _PyXI_excinfo_InitFromException(&error->uncaught, excobj);
+        if (failure != NULL) {
+            // We failed to initialize error->uncaught.
+            // XXX Print the excobj/traceback?  Emit a warning?
+            // XXX Print the current exception/traceback?
+            if (PyErr_ExceptionMatches(PyExc_MemoryError)) {
+                error->code = _PyXI_ERR_NO_MEMORY;
+            }
+            else {
+                error->code = _PyXI_ERR_OTHER;
+            }
+            PyErr_Clear();
+        }
+        else {
+            error->code = code;
+        }
+        assert(error->code != _PyXI_ERR_NO_ERROR);
+    }
+    else {
+        // There is an error code we need to propagate.
+        assert(excobj == NULL);
+        assert(code != _PyXI_ERR_NO_ERROR);
+        error->code = code;
+        _PyXI_excinfo_Clear(&error->uncaught);
+    }
+    return failure;
+}
+
+PyObject *
+_PyXI_ApplyError(_PyXI_error *error)
+{
+    if (error->code == _PyXI_ERR_UNCAUGHT_EXCEPTION) {
+        // Raise an exception that proxies the propagated exception.
+       return _PyXI_excinfo_AsObject(&error->uncaught);
+    }
+    else if (error->code == _PyXI_ERR_NOT_SHAREABLE) {
+        // Propagate the exception directly.
+        _set_xid_lookup_failure(error->interp, NULL, error->uncaught.msg);
+    }
+    else {
+        // Raise an exception corresponding to the code.
+        assert(error->code != _PyXI_ERR_NO_ERROR);
+        (void)_PyXI_ApplyErrorCode(error->code, error->interp);
+        if (error->uncaught.type.name != NULL || error->uncaught.msg != NULL) {
+            // __context__ will be set to a proxy of the propagated exception.
+            PyObject *exc = PyErr_GetRaisedException();
+            _PyXI_excinfo_Apply(&error->uncaught, PyExc_RuntimeError);
+            PyObject *exc2 = PyErr_GetRaisedException();
+            PyException_SetContext(exc, exc2);
+            PyErr_SetRaisedException(exc);
+        }
+    }
+    assert(PyErr_Occurred());
+    return NULL;
+}
+
+/* shared namespaces */
+
+/* Shared namespaces are expected to have relatively short lifetimes.
+   This means dealloc of a shared namespace will normally happen "soon".
+   Namespace items hold cross-interpreter data, which must get released.
+   If the namespace/items are cleared in a different interpreter than
+   where the items' cross-interpreter data was set then that will cause
+   pending calls to be used to release the cross-interpreter data.
+   The tricky bit is that the pending calls can happen sufficiently
+   later that the namespace/items might already be deallocated.  This is
+   a problem if the cross-interpreter data is allocated as part of a
+   namespace item.  If that's the case then we must ensure the shared
+   namespace is only cleared/freed *after* that data has been released. */
+
+typedef struct _sharednsitem {
+    const char *name;
+    _PyCrossInterpreterData *data;
+    // We could have a "PyCrossInterpreterData _data" field, so it would
+    // be allocated as part of the item and avoid an extra allocation.
+    // However, doing so adds a bunch of complexity because we must
+    // ensure the item isn't freed before a pending call might happen
+    // in a different interpreter to release the XI data.
+} _PyXI_namespace_item;
+
+static int
+_sharednsitem_is_initialized(_PyXI_namespace_item *item)
+{
+    if (item->name != NULL) {
+        return 1;
+    }
+    return 0;
+}
+
+static int
+_sharednsitem_init(_PyXI_namespace_item *item, PyObject *key)
+{
+    item->name = _copy_string_obj_raw(key);
+    if (item->name == NULL) {
+        assert(!_sharednsitem_is_initialized(item));
+        return -1;
+    }
+    item->data = NULL;
+    assert(_sharednsitem_is_initialized(item));
+    return 0;
+}
+
+static int
+_sharednsitem_has_value(_PyXI_namespace_item *item, int64_t *p_interpid)
+{
+    if (item->data == NULL) {
+        return 0;
+    }
+    if (p_interpid != NULL) {
+        *p_interpid = item->data->interpid;
+    }
+    return 1;
+}
+
+static int
+_sharednsitem_set_value(_PyXI_namespace_item *item, PyObject *value)
+{
+    assert(_sharednsitem_is_initialized(item));
+    assert(item->data == NULL);
+    item->data = PyMem_RawMalloc(sizeof(_PyCrossInterpreterData));
+    if (item->data == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    if (_PyObject_GetCrossInterpreterData(value, item->data) != 0) {
+        PyMem_RawFree(item->data);
+        item->data = NULL;
+        // The caller may want to propagate PyExc_NotShareableError
+        // if currently switched between interpreters.
+        return -1;
+    }
+    return 0;
+}
+
+static void
+_sharednsitem_clear_value(_PyXI_namespace_item *item)
+{
+    _PyCrossInterpreterData *data = item->data;
+    if (data != NULL) {
+        item->data = NULL;
+        int rawfree = 1;
+        (void)_release_xid_data(data, rawfree);
+    }
+}
+
+static void
+_sharednsitem_clear(_PyXI_namespace_item *item)
+{
+    if (item->name != NULL) {
+        PyMem_RawFree((void *)item->name);
+        item->name = NULL;
+    }
+    _sharednsitem_clear_value(item);
+}
+
+static int
+_sharednsitem_copy_from_ns(struct _sharednsitem *item, PyObject *ns)
+{
+    assert(item->name != NULL);
+    assert(item->data == NULL);
+    PyObject *value = PyDict_GetItemString(ns, item->name);  // borrowed
+    if (value == NULL) {
+        if (PyErr_Occurred()) {
+            return -1;
+        }
+        // When applied, this item will be set to the default (or fail).
+        return 0;
+    }
+    if (_sharednsitem_set_value(item, value) < 0) {
+        return -1;
+    }
+    return 0;
+}
+
+static int
+_sharednsitem_apply(_PyXI_namespace_item *item, PyObject *ns, PyObject *dflt)
+{
+    PyObject *name = PyUnicode_FromString(item->name);
+    if (name == NULL) {
+        return -1;
+    }
+    PyObject *value;
+    if (item->data != NULL) {
+        value = _PyCrossInterpreterData_NewObject(item->data);
+        if (value == NULL) {
+            Py_DECREF(name);
+            return -1;
+        }
+    }
+    else {
+        value = Py_NewRef(dflt);
+    }
+    int res = PyDict_SetItem(ns, name, value);
+    Py_DECREF(name);
+    Py_DECREF(value);
+    return res;
+}
+
+struct _sharedns {
+    Py_ssize_t len;
+    _PyXI_namespace_item *items;
+};
+
+static _PyXI_namespace *
+_sharedns_new(void)
+{
+    _PyXI_namespace *ns = PyMem_RawCalloc(sizeof(_PyXI_namespace), 1);
+    if (ns == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    *ns = (_PyXI_namespace){ 0 };
+    return ns;
+}
+
+static int
+_sharedns_is_initialized(_PyXI_namespace *ns)
+{
+    if (ns->len == 0) {
+        assert(ns->items == NULL);
+        return 0;
+    }
+
+    assert(ns->len > 0);
+    assert(ns->items != NULL);
+    assert(_sharednsitem_is_initialized(&ns->items[0]));
+    assert(ns->len == 1
+           || _sharednsitem_is_initialized(&ns->items[ns->len - 1]));
+    return 1;
+}
+
+#define HAS_COMPLETE_DATA 1
+#define HAS_PARTIAL_DATA 2
+
+static int
+_sharedns_has_xidata(_PyXI_namespace *ns, int64_t *p_interpid)
+{
+    // We expect _PyXI_namespace to always be initialized.
+    assert(_sharedns_is_initialized(ns));
+    int res = 0;
+    _PyXI_namespace_item *item0 = &ns->items[0];
+    if (!_sharednsitem_is_initialized(item0)) {
+        return 0;
+    }
+    int64_t interpid0 = -1;
+    if (!_sharednsitem_has_value(item0, &interpid0)) {
+        return 0;
+    }
+    if (ns->len > 1) {
+        // At this point we know it is has at least partial data.
+        _PyXI_namespace_item *itemN = &ns->items[ns->len-1];
+        if (!_sharednsitem_is_initialized(itemN)) {
+            res = HAS_PARTIAL_DATA;
+            goto finally;
+        }
+        int64_t interpidN = -1;
+        if (!_sharednsitem_has_value(itemN, &interpidN)) {
+            res = HAS_PARTIAL_DATA;
+            goto finally;
+        }
+        assert(interpidN == interpid0);
+    }
+    res = HAS_COMPLETE_DATA;
+    *p_interpid = interpid0;
+
+finally:
+    return res;
+}
+
+static void
+_sharedns_clear(_PyXI_namespace *ns)
+{
+    if (!_sharedns_is_initialized(ns)) {
+        return;
+    }
+
+    // If the cross-interpreter data were allocated as part of
+    // _PyXI_namespace_item (instead of dynamically), this is where
+    // we would need verify that we are clearing the items in the
+    // correct interpreter, to avoid a race with releasing the XI data
+    // via a pending call.  See _sharedns_has_xidata().
+    for (Py_ssize_t i=0; i < ns->len; i++) {
+        _sharednsitem_clear(&ns->items[i]);
+    }
+    PyMem_RawFree(ns->items);
+    ns->items = NULL;
+    ns->len = 0;
+}
+
+static void
+_sharedns_free(_PyXI_namespace *ns)
+{
+    _sharedns_clear(ns);
+    PyMem_RawFree(ns);
+}
+
+static int
+_sharedns_init(_PyXI_namespace *ns, PyObject *names)
+{
+    assert(!_sharedns_is_initialized(ns));
+    assert(names != NULL);
+    Py_ssize_t len = PyDict_CheckExact(names)
+        ? PyDict_Size(names)
+        : PySequence_Size(names);
+    if (len < 0) {
+        return -1;
+    }
+    if (len == 0) {
+        PyErr_SetString(PyExc_ValueError, "empty namespaces not allowed");
+        return -1;
+    }
+    assert(len > 0);
+
+    // Allocate the items.
+    _PyXI_namespace_item *items =
+            PyMem_RawCalloc(sizeof(struct _sharednsitem), len);
+    if (items == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
+    // Fill in the names.
+    Py_ssize_t i = -1;
+    if (PyDict_CheckExact(names)) {
+        Py_ssize_t pos = 0;
+        for (i=0; i < len; i++) {
+            PyObject *key;
+            if (!PyDict_Next(names, &pos, &key, NULL)) {
+                // This should not be possible.
+                assert(0);
+                goto error;
+            }
+            if (_sharednsitem_init(&items[i], key) < 0) {
+                goto error;
+            }
+        }
+    }
+    else if (PySequence_Check(names)) {
+        for (i=0; i < len; i++) {
+            PyObject *key = PySequence_GetItem(names, i);
+            if (key == NULL) {
+                goto error;
+            }
+            int res = _sharednsitem_init(&items[i], key);
+            Py_DECREF(key);
+            if (res < 0) {
+                goto error;
+            }
+        }
+    }
+    else {
+        PyErr_SetString(PyExc_NotImplementedError,
+                        "non-sequence namespace not supported");
+        goto error;
+    }
+
+    ns->items = items;
+    ns->len = len;
+    assert(_sharedns_is_initialized(ns));
+    return 0;
+
+error:
+    for (Py_ssize_t j=0; j < i; j++) {
+        _sharednsitem_clear(&items[j]);
+    }
+    PyMem_RawFree(items);
+    assert(!_sharedns_is_initialized(ns));
+    return -1;
+}
+
+void
+_PyXI_FreeNamespace(_PyXI_namespace *ns)
+{
+    if (!_sharedns_is_initialized(ns)) {
+        return;
+    }
+
+    int64_t interpid = -1;
+    if (!_sharedns_has_xidata(ns, &interpid)) {
+        _sharedns_free(ns);
+        return;
+    }
+
+    if (interpid == PyInterpreterState_GetID(_PyInterpreterState_GET())) {
+        _sharedns_free(ns);
+    }
+    else {
+        // If we weren't always dynamically allocating the cross-interpreter
+        // data in each item then we would need to using a pending call
+        // to call _sharedns_free(), to avoid the race between freeing
+        // the shared namespace and releasing the XI data.
+        _sharedns_free(ns);
+    }
+}
+
+_PyXI_namespace *
+_PyXI_NamespaceFromNames(PyObject *names)
+{
+    if (names == NULL || names == Py_None) {
+        return NULL;
+    }
+
+    _PyXI_namespace *ns = _sharedns_new();
+    if (ns == NULL) {
+        return NULL;
+    }
+
+    if (_sharedns_init(ns, names) < 0) {
+        PyMem_RawFree(ns);
+        if (PySequence_Size(names) == 0) {
+            PyErr_Clear();
+        }
+        return NULL;
+    }
+
+    return ns;
+}
+
+#ifndef NDEBUG
+static int _session_is_active(_PyXI_session *);
+#endif
+static void _propagate_not_shareable_error(_PyXI_session *);
+
+int
+_PyXI_FillNamespaceFromDict(_PyXI_namespace *ns, PyObject *nsobj,
+                            _PyXI_session *session)
+{
+    // session must be entered already, if provided.
+    assert(session == NULL || _session_is_active(session));
+    assert(_sharedns_is_initialized(ns));
+    for (Py_ssize_t i=0; i < ns->len; i++) {
+        _PyXI_namespace_item *item = &ns->items[i];
+        if (_sharednsitem_copy_from_ns(item, nsobj) < 0) {
+            _propagate_not_shareable_error(session);
+            // Clear out the ones we set so far.
+            for (Py_ssize_t j=0; j < i; j++) {
+                _sharednsitem_clear_value(&ns->items[j]);
+            }
+            return -1;
+        }
+    }
+    return 0;
+}
+
+// All items are expected to be shareable.
+static _PyXI_namespace *
+_PyXI_NamespaceFromDict(PyObject *nsobj, _PyXI_session *session)
+{
+    // session must be entered already, if provided.
+    assert(session == NULL || _session_is_active(session));
+    if (nsobj == NULL || nsobj == Py_None) {
+        return NULL;
+    }
+    if (!PyDict_CheckExact(nsobj)) {
+        PyErr_SetString(PyExc_TypeError, "expected a dict");
+        return NULL;
+    }
+
+    _PyXI_namespace *ns = _sharedns_new();
+    if (ns == NULL) {
+        return NULL;
+    }
+
+    if (_sharedns_init(ns, nsobj) < 0) {
+        if (PyDict_Size(nsobj) == 0) {
+            PyMem_RawFree(ns);
+            PyErr_Clear();
+            return NULL;
+        }
+        goto error;
+    }
+
+    if (_PyXI_FillNamespaceFromDict(ns, nsobj, session) < 0) {
+        goto error;
+    }
+
+    return ns;
+
+error:
+    assert(PyErr_Occurred()
+           || (session != NULL && session->error_override != NULL));
+    _sharedns_free(ns);
+    return NULL;
+}
+
+int
+_PyXI_ApplyNamespace(_PyXI_namespace *ns, PyObject *nsobj, PyObject *dflt)
+{
+    for (Py_ssize_t i=0; i < ns->len; i++) {
+        if (_sharednsitem_apply(&ns->items[i], nsobj, dflt) != 0) {
+            return -1;
+        }
+    }
+    return 0;
+}
+
+
+/**********************/
+/* high-level helpers */
+/**********************/
+
+/* enter/exit a cross-interpreter session */
+
+static void
+_enter_session(_PyXI_session *session, PyInterpreterState *interp)
+{
+    // Set here and cleared in _exit_session().
+    assert(!session->own_init_tstate);
+    assert(session->init_tstate == NULL);
+    assert(session->prev_tstate == NULL);
+    // Set elsewhere and cleared in _exit_session().
+    assert(!session->running);
+    assert(session->main_ns == NULL);
+    // Set elsewhere and cleared in _capture_current_exception().
+    assert(session->error_override == NULL);
+    // Set elsewhere and cleared in _PyXI_ApplyCapturedException().
+    assert(session->error == NULL);
+
+    // Switch to interpreter.
+    PyThreadState *tstate = PyThreadState_Get();
+    PyThreadState *prev = tstate;
+    if (interp != tstate->interp) {
+        tstate = PyThreadState_New(interp);
+        tstate->_whence = _PyThreadState_WHENCE_EXEC;
+        // XXX Possible GILState issues?
+        session->prev_tstate = PyThreadState_Swap(tstate);
+        assert(session->prev_tstate == prev);
+        session->own_init_tstate = 1;
+    }
+    session->init_tstate = tstate;
+    session->prev_tstate = prev;
+}
+
+static void
+_exit_session(_PyXI_session *session)
+{
+    PyThreadState *tstate = session->init_tstate;
+    assert(tstate != NULL);
+    assert(PyThreadState_Get() == tstate);
+
+    // Release any of the entered interpreters resources.
+    if (session->main_ns != NULL) {
+        Py_CLEAR(session->main_ns);
+    }
+
+    // Ensure this thread no longer owns __main__.
+    if (session->running) {
+        _PyInterpreterState_SetNotRunningMain(tstate->interp);
+        assert(!PyErr_Occurred());
+        session->running = 0;
+    }
+
+    // Switch back.
+    assert(session->prev_tstate != NULL);
+    if (session->prev_tstate != session->init_tstate) {
+        assert(session->own_init_tstate);
+        session->own_init_tstate = 0;
+        PyThreadState_Clear(tstate);
+        PyThreadState_Swap(session->prev_tstate);
+        PyThreadState_Delete(tstate);
+    }
+    else {
+        assert(!session->own_init_tstate);
+    }
+    session->prev_tstate = NULL;
+    session->init_tstate = NULL;
+}
+
+#ifndef NDEBUG
+static int
+_session_is_active(_PyXI_session *session)
+{
+    return (session->init_tstate != NULL);
+}
+#endif
+
+static void
+_propagate_not_shareable_error(_PyXI_session *session)
+{
+    if (session == NULL) {
+        return;
+    }
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (PyErr_ExceptionMatches(_get_not_shareable_error_type(interp))) {
+        // We want to propagate the exception directly.
+        session->_error_override = _PyXI_ERR_NOT_SHAREABLE;
+        session->error_override = &session->_error_override;
+    }
+}
+
+static void
+_capture_current_exception(_PyXI_session *session)
+{
+    assert(session->error == NULL);
+    if (!PyErr_Occurred()) {
+        assert(session->error_override == NULL);
+        return;
+    }
+
+    // Handle the exception override.
+    _PyXI_errcode *override = session->error_override;
+    session->error_override = NULL;
+    _PyXI_errcode errcode = override != NULL
+        ? *override
+        : _PyXI_ERR_UNCAUGHT_EXCEPTION;
+
+    // Pop the exception object.
+    PyObject *excval = NULL;
+    if (errcode == _PyXI_ERR_UNCAUGHT_EXCEPTION) {
+        // We want to actually capture the current exception.
+        excval = PyErr_GetRaisedException();
+    }
+    else if (errcode == _PyXI_ERR_ALREADY_RUNNING) {
+        // We don't need the exception info.
+        PyErr_Clear();
+    }
+    else {
+        // We could do a variety of things here, depending on errcode.
+        // However, for now we simply capture the exception and save
+        // the errcode.
+        excval = PyErr_GetRaisedException();
+    }
+
+    // Capture the exception.
+    _PyXI_error *err = &session->_error;
+    *err = (_PyXI_error){
+        .interp = session->init_tstate->interp,
+    };
+    const char *failure;
+    if (excval == NULL) {
+        failure = _PyXI_InitError(err, NULL, errcode);
+    }
+    else {
+        failure = _PyXI_InitError(err, excval, _PyXI_ERR_UNCAUGHT_EXCEPTION);
+        if (failure == NULL && override != NULL) {
+            err->code = errcode;
+        }
+    }
+
+    // Handle capture failure.
+    if (failure != NULL) {
+        // XXX Make this error message more generic.
+        fprintf(stderr,
+                "RunFailedError: script raised an uncaught exception (%s)",
+                failure);
+        err = NULL;
+    }
+
+    // a temporary hack  (famous last words)
+    if (excval != NULL) {
+        // XXX Store the traceback info (or rendered traceback) on
+        // _PyXI_excinfo, attach it to the exception when applied,
+        // and teach PyErr_Display() to print it.
+#ifdef Py_DEBUG
+        // XXX Drop this once _Py_excinfo picks up the slack.
+        PyErr_Display(NULL, excval, NULL);
+#endif
+        Py_DECREF(excval);
+    }
+
+    // Finished!
+    assert(!PyErr_Occurred());
+    session->error  = err;
+}
+
+PyObject *
+_PyXI_ApplyCapturedException(_PyXI_session *session)
+{
+    assert(!PyErr_Occurred());
+    assert(session->error != NULL);
+    PyObject *res = _PyXI_ApplyError(session->error);
+    assert((res == NULL) != (PyErr_Occurred() == NULL));
+    session->error = NULL;
+    return res;
+}
+
+int
+_PyXI_HasCapturedException(_PyXI_session *session)
+{
+    return session->error != NULL;
+}
+
+int
+_PyXI_Enter(_PyXI_session *session,
+            PyInterpreterState *interp, PyObject *nsupdates)
+{
+    // Convert the attrs for cross-interpreter use.
+    _PyXI_namespace *sharedns = NULL;
+    if (nsupdates != NULL) {
+        sharedns = _PyXI_NamespaceFromDict(nsupdates, NULL);
+        if (sharedns == NULL && PyErr_Occurred()) {
+            assert(session->error == NULL);
+            return -1;
+        }
+    }
+
+    // Switch to the requested interpreter (if necessary).
+    _enter_session(session, interp);
+    _PyXI_errcode errcode = _PyXI_ERR_UNCAUGHT_EXCEPTION;
+
+    // Ensure this thread owns __main__.
+    if (_PyInterpreterState_SetRunningMain(interp) < 0) {
+        // In the case where we didn't switch interpreters, it would
+        // be more efficient to leave the exception in place and return
+        // immediately.  However, life is simpler if we don't.
+        errcode = _PyXI_ERR_ALREADY_RUNNING;
+        goto error;
+    }
+    session->running = 1;
+
+    // Cache __main__.__dict__.
+    PyObject *main_mod = PyUnstable_InterpreterState_GetMainModule(interp);
+    if (main_mod == NULL) {
+        errcode = _PyXI_ERR_MAIN_NS_FAILURE;
+        goto error;
+    }
+    PyObject *ns = PyModule_GetDict(main_mod);  // borrowed
+    Py_DECREF(main_mod);
+    if (ns == NULL) {
+        errcode = _PyXI_ERR_MAIN_NS_FAILURE;
+        goto error;
+    }
+    session->main_ns = Py_NewRef(ns);
+
+    // Apply the cross-interpreter data.
+    if (sharedns != NULL) {
+        if (_PyXI_ApplyNamespace(sharedns, ns, NULL) < 0) {
+            errcode = _PyXI_ERR_APPLY_NS_FAILURE;
+            goto error;
+        }
+        _PyXI_FreeNamespace(sharedns);
+    }
+
+    errcode = _PyXI_ERR_NO_ERROR;
+    assert(!PyErr_Occurred());
+    return 0;
+
+error:
+    assert(PyErr_Occurred());
+    // We want to propagate all exceptions here directly (best effort).
+    assert(errcode != _PyXI_ERR_UNCAUGHT_EXCEPTION);
+    session->error_override = &errcode;
+    _capture_current_exception(session);
+    _exit_session(session);
+    if (sharedns != NULL) {
+        _PyXI_FreeNamespace(sharedns);
+    }
+    return -1;
+}
+
+void
+_PyXI_Exit(_PyXI_session *session)
+{
+    _capture_current_exception(session);
+    _exit_session(session);
+}
+
+
+/*********************/
+/* runtime lifecycle */
+/*********************/
+
+PyStatus
+_PyXI_Init(PyInterpreterState *interp)
+{
+    PyStatus status;
+
+    // Initialize the XID registry.
+    if (_Py_IsMainInterpreter(interp)) {
+        _xidregistry_init(_get_global_xidregistry(interp->runtime));
+    }
+    _xidregistry_init(_get_xidregistry(interp));
+
+    // Initialize exceptions (heap types).
+    status = _init_not_shareable_error_type(interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }
+
+    return _PyStatus_OK();
+}
+
+// _PyXI_Fini() must be called before the interpreter is cleared,
+// since we must clear some heap objects.
+
+void
+_PyXI_Fini(PyInterpreterState *interp)
+{
+    // Finalize exceptions (heap types).
+    _fini_not_shareable_error_type(interp);
+
+    // Finalize the XID registry.
+    _xidregistry_fini(_get_xidregistry(interp));
+    if (_Py_IsMainInterpreter(interp)) {
+        _xidregistry_fini(_get_global_xidregistry(interp->runtime));
+    }
+}
diff --git a/Python/dtoa.c b/Python/dtoa.c
index c5e343b82f74c5..6e3162f80bdae1 100644
--- a/Python/dtoa.c
+++ b/Python/dtoa.c
@@ -172,10 +172,6 @@ typedef uint64_t ULLong;
 #define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
 #endif
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 typedef union { double d; ULong L[2]; } U;
 
 #ifdef IEEE_8087
@@ -313,7 +309,7 @@ BCinfo {
 // struct Bigint is defined in pycore_dtoa.h.
 typedef struct Bigint Bigint;
 
-#ifndef Py_USING_MEMORY_DEBUGGER
+#if !defined(Py_GIL_DISABLED) && !defined(Py_USING_MEMORY_DEBUGGER)
 
 /* Memory management: memory is allocated from, and returned to, Kmax+1 pools
    of memory, where pool k (0 <= k <= Kmax) is for Bigints b with b->maxwds ==
@@ -432,7 +428,7 @@ Bfree(Bigint *v)
     }
 }
 
-#endif /* Py_USING_MEMORY_DEBUGGER */
+#endif /* !defined(Py_GIL_DISABLED) && !defined(Py_USING_MEMORY_DEBUGGER) */
 
 #define Bcopy(x,y) memcpy((char *)&x->sign, (char *)&y->sign,   \
                           y->wds*sizeof(Long) + 2*sizeof(int))
@@ -677,10 +673,17 @@ mult(Bigint *a, Bigint *b)
 static Bigint *
 pow5mult(Bigint *b, int k)
 {
-    Bigint *b1, *p5, *p51;
+    Bigint *b1, *p5, **p5s;
     int i;
     static const int p05[3] = { 5, 25, 125 };
 
+    // For double-to-string conversion, the maximum value of k is limited by
+    // DBL_MAX_10_EXP (308), the maximum decimal base-10 exponent for binary64.
+    // For string-to-double conversion, the extreme case is constrained by our
+    // hardcoded exponent limit before we underflow of -512, adjusted by
+    // STRTOD_DIGLIM-DBL_DIG-1, giving a maximum of k=535.
+    assert(0 <= k && k < 1024);
+
     if ((i = k & 3)) {
         b = multadd(b, p05[i-1], 0);
         if (b == NULL)
@@ -690,18 +693,11 @@ pow5mult(Bigint *b, int k)
     if (!(k >>= 2))
         return b;
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    p5 = interp->dtoa.p5s;
-    if (!p5) {
-        /* first time */
-        p5 = i2b(625);
-        if (p5 == NULL) {
-            Bfree(b);
-            return NULL;
-        }
-        interp->dtoa.p5s = p5;
-        p5->next = 0;
-    }
+    p5s = interp->dtoa.p5s;
     for(;;) {
+        assert(p5s != interp->dtoa.p5s + Bigint_Pow5size);
+        p5 = *p5s;
+        p5s++;
         if (k & 1) {
             b1 = mult(b, p5);
             Bfree(b);
@@ -711,17 +707,6 @@ pow5mult(Bigint *b, int k)
         }
         if (!(k >>= 1))
             break;
-        p51 = p5->next;
-        if (!p51) {
-            p51 = mult(p5,p5);
-            if (p51 == NULL) {
-                Bfree(b);
-                return NULL;
-            }
-            p51->next = 0;
-            p5->next = p51;
-        }
-        p5 = p51;
     }
     return b;
 }
@@ -2813,8 +2798,44 @@ _Py_dg_dtoa(double dd, int mode, int ndigits,
         _Py_dg_freedtoa(s0);
     return NULL;
 }
-#ifdef __cplusplus
-}
-#endif
 
 #endif  // _PY_SHORT_FLOAT_REPR == 1
+
+PyStatus
+_PyDtoa_Init(PyInterpreterState *interp)
+{
+#if _PY_SHORT_FLOAT_REPR == 1 && !defined(Py_USING_MEMORY_DEBUGGER)
+    Bigint **p5s = interp->dtoa.p5s;
+
+    // 5**4 = 625
+    Bigint *p5 = i2b(625);
+    if (p5 == NULL) {
+        return PyStatus_NoMemory();
+    }
+    p5s[0] = p5;
+
+    // compute 5**8, 5**16, 5**32, ..., 5**512
+    for (Py_ssize_t i = 1; i < Bigint_Pow5size; i++) {
+        p5 = mult(p5, p5);
+        if (p5 == NULL) {
+            return PyStatus_NoMemory();
+        }
+        p5s[i] = p5;
+    }
+
+#endif
+    return PyStatus_Ok();
+}
+
+void
+_PyDtoa_Fini(PyInterpreterState *interp)
+{
+#if _PY_SHORT_FLOAT_REPR == 1 && !defined(Py_USING_MEMORY_DEBUGGER)
+    Bigint **p5s = interp->dtoa.p5s;
+    for (Py_ssize_t i = 0; i < Bigint_Pow5size; i++) {
+        Bigint *p5 = p5s[i];
+        p5s[i] = NULL;
+        Bfree(p5);
+    }
+#endif
+}
diff --git a/Python/dup2.c b/Python/dup2.c
index a1df0492099163..936211f27ec737 100644
--- a/Python/dup2.c
+++ b/Python/dup2.c
@@ -11,9 +11,9 @@
  * Return fd2 if all went well; return BADEXIT otherwise.
  */
 
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
+#include <errno.h>                // errno
+#include <fcntl.h>                // fcntl()
+#include <unistd.h>               // close()
 
 #define BADEXIT -1
 
diff --git a/Python/dynload_hpux.c b/Python/dynload_hpux.c
index a53373038ed859..1c44722ff9a2d0 100644
--- a/Python/dynload_hpux.c
+++ b/Python/dynload_hpux.c
@@ -5,7 +5,7 @@
 #include <errno.h>
 
 #include "Python.h"
-#include "importdl.h"
+#include "pycore_importdl.h"
 
 #if defined(__hp9000s300)
 #define FUNCNAME_PATTERN "_%.20s_%.200s"
diff --git a/Python/dynload_shlib.c b/Python/dynload_shlib.c
index 6761bba457983b..5a37a83805ba78 100644
--- a/Python/dynload_shlib.c
+++ b/Python/dynload_shlib.c
@@ -4,7 +4,7 @@
 #include "Python.h"
 #include "pycore_interp.h"    // _PyInterpreterState.dlopenflags
 #include "pycore_pystate.h"   // _PyInterpreterState_GET()
-#include "importdl.h"
+#include "pycore_importdl.h"
 
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/Python/dynload_stub.c b/Python/dynload_stub.c
index 59160483caa448..11f7e5f643f79e 100644
--- a/Python/dynload_stub.c
+++ b/Python/dynload_stub.c
@@ -3,7 +3,7 @@
    not present. */
 
 #include "Python.h"
-#include "importdl.h"
+#include "pycore_importdl.h"
 
 
 const char *_PyImport_DynLoadFiletab[] = {NULL};
diff --git a/Python/dynload_win.c b/Python/dynload_win.c
index acab05e2c6def3..a0ac31c80a5f6e 100644
--- a/Python/dynload_win.c
+++ b/Python/dynload_win.c
@@ -5,29 +5,10 @@
 #include "pycore_fileutils.h"     // _Py_add_relfile()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 
-#ifdef HAVE_DIRECT_H
-#include <direct.h>
-#endif
-#include <ctype.h>
-
-#include "importdl.h"
-#include "patchlevel.h"
+#include "pycore_importdl.h"      // dl_funcptr
+#include "patchlevel.h"           // PY_MAJOR_VERSION
 #include <windows.h>
 
-#ifdef _DEBUG
-#define PYD_DEBUG_SUFFIX "_d"
-#else
-#define PYD_DEBUG_SUFFIX ""
-#endif
-
-#ifdef PYD_PLATFORM_TAG
-#define PYD_TAGGED_SUFFIX PYD_DEBUG_SUFFIX ".cp" Py_STRINGIFY(PY_MAJOR_VERSION) Py_STRINGIFY(PY_MINOR_VERSION) "-" PYD_PLATFORM_TAG ".pyd"
-#else
-#define PYD_TAGGED_SUFFIX PYD_DEBUG_SUFFIX ".cp" Py_STRINGIFY(PY_MAJOR_VERSION) Py_STRINGIFY(PY_MINOR_VERSION) ".pyd"
-#endif
-
-#define PYD_UNTAGGED_SUFFIX PYD_DEBUG_SUFFIX ".pyd"
-
 const char *_PyImport_DynLoadFiletab[] = {
     PYD_TAGGED_SUFFIX,
     PYD_UNTAGGED_SUFFIX,
diff --git a/Python/emscripten_signal.c b/Python/emscripten_signal.c
index d617ddfeb37c5a..561b5b73cd6b70 100644
--- a/Python/emscripten_signal.c
+++ b/Python/emscripten_signal.c
@@ -38,19 +38,17 @@ _Py_CheckEmscriptenSignals(void)
     }
 }
 
-
 #define PY_EMSCRIPTEN_SIGNAL_INTERVAL 50
-static int emscripten_signal_clock = PY_EMSCRIPTEN_SIGNAL_INTERVAL;
+int _Py_emscripten_signal_clock = PY_EMSCRIPTEN_SIGNAL_INTERVAL;
 
 void
 _Py_CheckEmscriptenSignalsPeriodically(void)
 {
-    if (!Py_EMSCRIPTEN_SIGNAL_HANDLING) {
-        return;
-    }
-    emscripten_signal_clock--;
-    if (emscripten_signal_clock == 0) {
-        emscripten_signal_clock = PY_EMSCRIPTEN_SIGNAL_INTERVAL;
+    if (_Py_emscripten_signal_clock == 0) {
+        _Py_emscripten_signal_clock = PY_EMSCRIPTEN_SIGNAL_INTERVAL;
         _Py_CheckEmscriptenSignals();
     }
+    else if (Py_EMSCRIPTEN_SIGNAL_HANDLING) {
+        _Py_emscripten_signal_clock--;
+    }
 }
diff --git a/Python/emscripten_trampoline.c b/Python/emscripten_trampoline.c
new file mode 100644
index 00000000000000..2a80ec4f18d757
--- /dev/null
+++ b/Python/emscripten_trampoline.c
@@ -0,0 +1,82 @@
+#if defined(PY_CALL_TRAMPOLINE)
+
+#include <emscripten.h>             // EM_JS
+#include <Python.h>
+#include "pycore_runtime.h"         // _PyRuntime
+
+
+/**
+ * This is the GoogleChromeLabs approved way to feature detect type-reflection:
+ * https://github.com/GoogleChromeLabs/wasm-feature-detect/blob/main/src/detectors/type-reflection/index.js
+ */
+EM_JS(int, _PyEM_detect_type_reflection, (), {
+    return "Function" in WebAssembly;
+});
+
+void
+_Py_EmscriptenTrampoline_Init(_PyRuntimeState *runtime)
+{
+    runtime->wasm_type_reflection_available = _PyEM_detect_type_reflection();
+}
+
+/**
+ * Backwards compatible trampoline works with all JS runtimes
+ */
+EM_JS(PyObject*,
+_PyEM_TrampolineCall_JavaScript, (PyCFunctionWithKeywords func,
+                                  PyObject *arg1,
+                                  PyObject *arg2,
+                                  PyObject *arg3),
+{
+    return wasmTable.get(func)(arg1, arg2, arg3);
+}
+);
+
+/**
+ * In runtimes with WebAssembly type reflection, count the number of parameters
+ * and cast to the appropriate signature
+ */
+EM_JS(int, _PyEM_CountFuncParams, (PyCFunctionWithKeywords func),
+{
+    let n = _PyEM_CountFuncParams.cache.get(func);
+
+    if (n !== undefined) {
+        return n;
+    }
+    n = WebAssembly.Function.type(wasmTable.get(func)).parameters.length;
+    _PyEM_CountFuncParams.cache.set(func, n);
+    return n;
+}
+_PyEM_CountFuncParams.cache = new Map();
+)
+
+
+typedef PyObject* (*zero_arg)(void);
+typedef PyObject* (*one_arg)(PyObject*);
+typedef PyObject* (*two_arg)(PyObject*, PyObject*);
+typedef PyObject* (*three_arg)(PyObject*, PyObject*, PyObject*);
+
+
+PyObject*
+_PyEM_TrampolineCall_Reflection(PyCFunctionWithKeywords func,
+                                PyObject* self,
+                                PyObject* args,
+                                PyObject* kw)
+{
+    switch (_PyEM_CountFuncParams(func)) {
+        case 0:
+            return ((zero_arg)func)();
+        case 1:
+            return ((one_arg)func)(self);
+        case 2:
+            return ((two_arg)func)(self, args);
+        case 3:
+            return ((three_arg)func)(self, args, kw);
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                            "Handler takes too many arguments");
+            return NULL;
+    }
+}
+
+#endif
diff --git a/Python/errors.c b/Python/errors.c
index a8000ac94918db..ed5eec5c261970 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -10,18 +10,12 @@
 #include "pycore_sysmodule.h"     // _PySys_Audit()
 #include "pycore_traceback.h"     // _PyTraceBack_FromFrame()
 
-#include <ctype.h>
 #ifdef MS_WINDOWS
 #  include <windows.h>
 #  include <winbase.h>
 #  include <stdlib.h>             // _sys_nerr
 #endif
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* Forward declarations */
 static PyObject *
 _PyErr_FormatV(PyThreadState *tstate, PyObject *exception,
@@ -292,8 +286,10 @@ _PyErr_SetString(PyThreadState *tstate, PyObject *exception,
                  const char *string)
 {
     PyObject *value = PyUnicode_FromString(string);
-    _PyErr_SetObject(tstate, exception, value);
-    Py_XDECREF(value);
+    if (value != NULL) {
+        _PyErr_SetObject(tstate, exception, value);
+        Py_DECREF(value);
+    }
 }
 
 void
@@ -703,52 +699,28 @@ _PyErr_ChainExceptions1(PyObject *exc)
     }
 }
 
-/* Set the currently set exception's context to the given exception.
-
-   If the provided exc_info is NULL, then the current Python thread state's
-   exc_info will be used for the context instead.
+/* If the current thread is handling an exception (exc_info is ), set this
+   exception as the context of the current raised exception.
 
    This function can only be called when _PyErr_Occurred() is true.
    Also, this function won't create any cycles in the exception context
    chain to the extent that _PyErr_SetObject ensures this. */
 void
-_PyErr_ChainStackItem(_PyErr_StackItem *exc_info)
+_PyErr_ChainStackItem(void)
 {
     PyThreadState *tstate = _PyThreadState_GET();
     assert(_PyErr_Occurred(tstate));
 
-    int exc_info_given;
-    if (exc_info == NULL) {
-        exc_info_given = 0;
-        exc_info = tstate->exc_info;
-    } else {
-        exc_info_given = 1;
-    }
-
+    _PyErr_StackItem *exc_info = tstate->exc_info;
     if (exc_info->exc_value == NULL || exc_info->exc_value == Py_None) {
         return;
     }
 
-    _PyErr_StackItem *saved_exc_info;
-    if (exc_info_given) {
-        /* Temporarily set the thread state's exc_info since this is what
-           _PyErr_SetObject uses for implicit exception chaining. */
-        saved_exc_info = tstate->exc_info;
-        tstate->exc_info = exc_info;
-    }
-
-    PyObject *typ, *val, *tb;
-    _PyErr_Fetch(tstate, &typ, &val, &tb);
+    PyObject *exc = _PyErr_GetRaisedException(tstate);
 
     /* _PyErr_SetObject sets the context from PyThreadState. */
-    _PyErr_SetObject(tstate, typ, val);
-    Py_DECREF(typ);  // since _PyErr_Occurred was true
-    Py_XDECREF(val);
-    Py_XDECREF(tb);
-
-    if (exc_info_given) {
-        tstate->exc_info = saved_exc_info;
-    }
+    _PyErr_SetObject(tstate, (PyObject *) Py_TYPE(exc), exc);
+    Py_DECREF(exc);  // since _PyErr_Occurred was true
 }
 
 static PyObject *
@@ -915,7 +887,15 @@ PyErr_SetFromErrnoWithFilenameObjects(PyObject *exc, PyObject *filenameObject, P
 PyObject *
 PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
 {
-    PyObject *name = filename ? PyUnicode_DecodeFSDefault(filename) : NULL;
+    PyObject *name = NULL;
+    if (filename) {
+        int i = errno;
+        name = PyUnicode_DecodeFSDefault(filename);
+        if (name == NULL) {
+            return NULL;
+        }
+        errno = i;
+    }
     PyObject *result = PyErr_SetFromErrnoWithFilenameObjects(exc, name, NULL);
     Py_XDECREF(name);
     return result;
@@ -1012,7 +992,16 @@ PyObject *PyErr_SetExcFromWindowsErrWithFilename(
     int ierr,
     const char *filename)
 {
-    PyObject *name = filename ? PyUnicode_DecodeFSDefault(filename) : NULL;
+    PyObject *name = NULL;
+    if (filename) {
+        if ((DWORD)ierr == 0) {
+            ierr = (int)GetLastError();
+        }
+        name = PyUnicode_DecodeFSDefault(filename);
+        if (name == NULL) {
+            return NULL;
+        }
+    }
     PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObjects(exc,
                                                                  ierr,
                                                                  name,
@@ -1036,7 +1025,16 @@ PyObject *PyErr_SetFromWindowsErrWithFilename(
     int ierr,
     const char *filename)
 {
-    PyObject *name = filename ? PyUnicode_DecodeFSDefault(filename) : NULL;
+    PyObject *name = NULL;
+    if (filename) {
+        if ((DWORD)ierr == 0) {
+            ierr = (int)GetLastError();
+        }
+        name = PyUnicode_DecodeFSDefault(filename);
+        if (name == NULL) {
+            return NULL;
+        }
+    }
     PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObjects(
                                                   PyExc_OSError,
                                                   ierr, name, NULL);
@@ -1161,9 +1159,10 @@ _PyErr_FormatV(PyThreadState *tstate, PyObject *exception,
     _PyErr_Clear(tstate);
 
     string = PyUnicode_FromFormatV(format, vargs);
-
-    _PyErr_SetObject(tstate, exception, string);
-    Py_XDECREF(string);
+    if (string != NULL) {
+        _PyErr_SetObject(tstate, exception, string);
+        Py_DECREF(string);
+    }
     return NULL;
 }
 
@@ -1509,11 +1508,9 @@ write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
     }
 
     /* Explicitly call file.flush() */
-    PyObject *res = _PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
-    if (!res) {
+    if (_PyFile_Flush(file) < 0) {
         return -1;
     }
-    Py_DECREF(res);
 
     return 0;
 }
@@ -1572,14 +1569,16 @@ _PyErr_WriteUnraisableDefaultHook(PyObject *args)
    for Python to handle it. For example, when a destructor raises an exception
    or during garbage collection (gc.collect()).
 
-   If err_msg_str is non-NULL, the error message is formatted as:
-   "Exception ignored %s" % err_msg_str. Otherwise, use "Exception ignored in"
-   error message.
+   If format is non-NULL, the error message is formatted using format and
+   variable arguments as in PyUnicode_FromFormat().
+   Otherwise, use "Exception ignored in" error message.
 
    An exception must be set when calling this function. */
-void
-_PyErr_WriteUnraisableMsg(const char *err_msg_str, PyObject *obj)
+
+static void
+format_unraisable_v(const char *format, va_list va, PyObject *obj)
 {
+    const char *err_msg_str;
     PyThreadState *tstate = _PyThreadState_GET();
     _Py_EnsureTstateNotNULL(tstate);
 
@@ -1613,8 +1612,8 @@ _PyErr_WriteUnraisableMsg(const char *err_msg_str, PyObject *obj)
         }
     }
 
-    if (err_msg_str != NULL) {
-        err_msg = PyUnicode_FromFormat("Exception ignored %s", err_msg_str);
+    if (format != NULL) {
+        err_msg = PyUnicode_FromFormatV(format, va);
         if (err_msg == NULL) {
             PyErr_Clear();
         }
@@ -1679,11 +1678,30 @@ _PyErr_WriteUnraisableMsg(const char *err_msg_str, PyObject *obj)
     _PyErr_Clear(tstate); /* Just in case */
 }
 
+void
+PyErr_FormatUnraisable(const char *format, ...)
+{
+    va_list va;
+
+    va_start(va, format);
+    format_unraisable_v(format, va, NULL);
+    va_end(va);
+}
+
+static void
+format_unraisable(PyObject *obj, const char *format, ...)
+{
+    va_list va;
+
+    va_start(va, format);
+    format_unraisable_v(format, va, obj);
+    va_end(va);
+}
 
 void
 PyErr_WriteUnraisable(PyObject *obj)
 {
-    _PyErr_WriteUnraisableMsg(NULL, obj);
+    format_unraisable(obj, NULL);
 }
 
 
@@ -1772,13 +1790,11 @@ PyErr_SyntaxLocationObjectEx(PyObject *filename, int lineno, int col_offset,
         }
     }
     if ((PyObject *)Py_TYPE(exc) != PyExc_SyntaxError) {
-        if (_PyObject_LookupAttr(exc, &_Py_ID(msg), &tmp) < 0) {
+        int rc = PyObject_HasAttrWithError(exc, &_Py_ID(msg));
+        if (rc < 0) {
             _PyErr_Clear(tstate);
         }
-        else if (tmp) {
-            Py_DECREF(tmp);
-        }
-        else {
+        else if (!rc) {
             tmp = PyObject_Str(exc);
             if (tmp) {
                 if (PyObject_SetAttr(exc, &_Py_ID(msg), tmp)) {
@@ -1791,13 +1807,11 @@ PyErr_SyntaxLocationObjectEx(PyObject *filename, int lineno, int col_offset,
             }
         }
 
-        if (_PyObject_LookupAttr(exc, &_Py_ID(print_file_and_line), &tmp) < 0) {
+        rc = PyObject_HasAttrWithError(exc, &_Py_ID(print_file_and_line));
+        if (rc < 0) {
             _PyErr_Clear(tstate);
         }
-        else if (tmp) {
-            Py_DECREF(tmp);
-        }
-        else {
+        else if (!rc) {
             if (PyObject_SetAttr(exc, &_Py_ID(print_file_and_line), Py_None)) {
                 _PyErr_Clear(tstate);
             }
@@ -1920,7 +1934,3 @@ PyErr_ProgramTextObject(PyObject *filename, int lineno)
 {
     return _PyErr_ProgramDecodedTextObject(filename, lineno, NULL);
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Python/executor_cases.c.h b/Python/executor_cases.c.h
new file mode 100644
index 00000000000000..974e3f28a411b8
--- /dev/null
+++ b/Python/executor_cases.c.h
@@ -0,0 +1,3383 @@
+// This file is generated by Tools/cases_generator/generate_cases.py
+// from:
+//   Python/bytecodes.c
+// Do not edit!
+
+#ifdef TIER_ONE
+    #error "This file is for Tier 2 only"
+#endif
+#define TIER_TWO 2
+
+        case NOP: {
+            break;
+        }
+
+        case RESUME_CHECK: {
+#if defined(__EMSCRIPTEN__)
+            DEOPT_IF(_Py_emscripten_signal_clock == 0, RESUME);
+            _Py_emscripten_signal_clock -= Py_EMSCRIPTEN_SIGNAL_HANDLING;
+#endif
+            uintptr_t eval_breaker = _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker);
+            uintptr_t version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            assert((version & _PY_EVAL_EVENTS_MASK) == 0);
+            DEOPT_IF(eval_breaker != version, RESUME);
+            break;
+        }
+
+        case LOAD_FAST_CHECK: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            value = GETLOCAL(oparg);
+            if (value == NULL) goto unbound_local_error_tier_two;
+            Py_INCREF(value);
+            STACK_GROW(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case LOAD_FAST: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            value = GETLOCAL(oparg);
+            assert(value != NULL);
+            Py_INCREF(value);
+            STACK_GROW(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case LOAD_FAST_AND_CLEAR: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            value = GETLOCAL(oparg);
+            // do not use SETLOCAL here, it decrefs the old value
+            GETLOCAL(oparg) = NULL;
+            STACK_GROW(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case LOAD_CONST: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            value = GETITEM(FRAME_CO_CONSTS, oparg);
+            Py_INCREF(value);
+            STACK_GROW(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case STORE_FAST: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            value = stack_pointer[-1];
+            SETLOCAL(oparg, value);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case POP_TOP: {
+            PyObject *value;
+            value = stack_pointer[-1];
+            Py_DECREF(value);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case PUSH_NULL: {
+            PyObject *res;
+            res = NULL;
+            STACK_GROW(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case END_SEND: {
+            PyObject *value;
+            PyObject *receiver;
+            value = stack_pointer[-1];
+            receiver = stack_pointer[-2];
+            Py_DECREF(receiver);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case UNARY_NEGATIVE: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            res = PyNumber_Negative(value);
+            Py_DECREF(value);
+            if (res == NULL) goto pop_1_error_tier_two;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case UNARY_NOT: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            assert(PyBool_Check(value));
+            res = Py_IsFalse(value) ? Py_True : Py_False;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _TO_BOOL: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            int err = PyObject_IsTrue(value);
+            Py_DECREF(value);
+            if (err < 0) goto pop_1_error_tier_two;
+            res = err ? Py_True : Py_False;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case TO_BOOL_BOOL: {
+            PyObject *value;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyBool_Check(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            break;
+        }
+
+        case TO_BOOL_INT: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyLong_CheckExact(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            if (_PyLong_IsZero((PyLongObject *)value)) {
+                assert(_Py_IsImmortal(value));
+                res = Py_False;
+            }
+            else {
+                Py_DECREF(value);
+                res = Py_True;
+            }
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case TO_BOOL_LIST: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyList_CheckExact(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            res = Py_SIZE(value) ? Py_True : Py_False;
+            Py_DECREF(value);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case TO_BOOL_NONE: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            // This one is a bit weird, because we expect *some* failures:
+            DEOPT_IF(!Py_IsNone(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            res = Py_False;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case TO_BOOL_STR: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyUnicode_CheckExact(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            if (value == &_Py_STR(empty)) {
+                assert(_Py_IsImmortal(value));
+                res = Py_False;
+            }
+            else {
+                assert(Py_SIZE(value));
+                Py_DECREF(value);
+                res = Py_True;
+            }
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case TO_BOOL_ALWAYS_TRUE: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            uint32_t version = (uint32_t)CURRENT_OPERAND();
+            // This one is a bit weird, because we expect *some* failures:
+            assert(version);
+            DEOPT_IF(Py_TYPE(value)->tp_version_tag != version, TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            Py_DECREF(value);
+            res = Py_True;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case UNARY_INVERT: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            res = PyNumber_Invert(value);
+            Py_DECREF(value);
+            if (res == NULL) goto pop_1_error_tier_two;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _GUARD_BOTH_INT: {
+            PyObject *right;
+            PyObject *left;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(left), _GUARD_BOTH_INT);
+            DEOPT_IF(!PyLong_CheckExact(right), _GUARD_BOTH_INT);
+            break;
+        }
+
+        case _BINARY_OP_MULTIPLY_INT: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            res = _PyLong_Multiply((PyLongObject *)left, (PyLongObject *)right);
+            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _BINARY_OP_ADD_INT: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            res = _PyLong_Add((PyLongObject *)left, (PyLongObject *)right);
+            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _BINARY_OP_SUBTRACT_INT: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            res = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
+            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _GUARD_BOTH_FLOAT: {
+            PyObject *right;
+            PyObject *left;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyFloat_CheckExact(left), _GUARD_BOTH_FLOAT);
+            DEOPT_IF(!PyFloat_CheckExact(right), _GUARD_BOTH_FLOAT);
+            break;
+        }
+
+        case _BINARY_OP_MULTIPLY_FLOAT: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            double dres =
+                ((PyFloatObject *)left)->ob_fval *
+                ((PyFloatObject *)right)->ob_fval;
+            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _BINARY_OP_ADD_FLOAT: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            double dres =
+                ((PyFloatObject *)left)->ob_fval +
+                ((PyFloatObject *)right)->ob_fval;
+            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _BINARY_OP_SUBTRACT_FLOAT: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            double dres =
+                ((PyFloatObject *)left)->ob_fval -
+                ((PyFloatObject *)right)->ob_fval;
+            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _GUARD_BOTH_UNICODE: {
+            PyObject *right;
+            PyObject *left;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyUnicode_CheckExact(left), _GUARD_BOTH_UNICODE);
+            DEOPT_IF(!PyUnicode_CheckExact(right), _GUARD_BOTH_UNICODE);
+            break;
+        }
+
+        case _BINARY_OP_ADD_UNICODE: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            STAT_INC(BINARY_OP, hit);
+            res = PyUnicode_Concat(left, right);
+            _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
+            _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _BINARY_SUBSCR: {
+            PyObject *sub;
+            PyObject *container;
+            PyObject *res;
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
+            res = PyObject_GetItem(container, sub);
+            Py_DECREF(container);
+            Py_DECREF(sub);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case BINARY_SLICE: {
+            PyObject *stop;
+            PyObject *start;
+            PyObject *container;
+            PyObject *res;
+            stop = stack_pointer[-1];
+            start = stack_pointer[-2];
+            container = stack_pointer[-3];
+            PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
+            // Can't use ERROR_IF() here, because we haven't
+            // DECREF'ed container yet, and we still own slice.
+            if (slice == NULL) {
+                res = NULL;
+            }
+            else {
+                res = PyObject_GetItem(container, slice);
+                Py_DECREF(slice);
+            }
+            Py_DECREF(container);
+            if (res == NULL) goto pop_3_error_tier_two;
+            STACK_SHRINK(2);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case STORE_SLICE: {
+            PyObject *stop;
+            PyObject *start;
+            PyObject *container;
+            PyObject *v;
+            stop = stack_pointer[-1];
+            start = stack_pointer[-2];
+            container = stack_pointer[-3];
+            v = stack_pointer[-4];
+            PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
+            int err;
+            if (slice == NULL) {
+                err = 1;
+            }
+            else {
+                err = PyObject_SetItem(container, slice, v);
+                Py_DECREF(slice);
+            }
+            Py_DECREF(v);
+            Py_DECREF(container);
+            if (err) goto pop_4_error_tier_two;
+            STACK_SHRINK(4);
+            break;
+        }
+
+        case BINARY_SUBSCR_LIST_INT: {
+            PyObject *sub;
+            PyObject *list;
+            PyObject *res;
+            sub = stack_pointer[-1];
+            list = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
+            DEOPT_IF(!PyList_CheckExact(list), BINARY_SUBSCR);
+
+            // Deopt unless 0 <= sub < PyList_Size(list)
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            DEOPT_IF(index >= PyList_GET_SIZE(list), BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            res = PyList_GET_ITEM(list, index);
+            assert(res != NULL);
+            Py_INCREF(res);
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(list);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case BINARY_SUBSCR_STR_INT: {
+            PyObject *sub;
+            PyObject *str;
+            PyObject *res;
+            sub = stack_pointer[-1];
+            str = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
+            DEOPT_IF(!PyUnicode_CheckExact(str), BINARY_SUBSCR);
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            DEOPT_IF(PyUnicode_GET_LENGTH(str) <= index, BINARY_SUBSCR);
+            // Specialize for reading an ASCII character from any string:
+            Py_UCS4 c = PyUnicode_READ_CHAR(str, index);
+            DEOPT_IF(Py_ARRAY_LENGTH(_Py_SINGLETON(strings).ascii) <= c, BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            res = (PyObject*)&_Py_SINGLETON(strings).ascii[c];
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(str);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case BINARY_SUBSCR_TUPLE_INT: {
+            PyObject *sub;
+            PyObject *tuple;
+            PyObject *res;
+            sub = stack_pointer[-1];
+            tuple = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
+            DEOPT_IF(!PyTuple_CheckExact(tuple), BINARY_SUBSCR);
+
+            // Deopt unless 0 <= sub < PyTuple_Size(list)
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            DEOPT_IF(index >= PyTuple_GET_SIZE(tuple), BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            res = PyTuple_GET_ITEM(tuple, index);
+            assert(res != NULL);
+            Py_INCREF(res);
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(tuple);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case BINARY_SUBSCR_DICT: {
+            PyObject *sub;
+            PyObject *dict;
+            PyObject *res;
+            sub = stack_pointer[-1];
+            dict = stack_pointer[-2];
+            DEOPT_IF(!PyDict_CheckExact(dict), BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            int rc = PyDict_GetItemRef(dict, sub, &res);
+            if (rc == 0) {
+                _PyErr_SetKeyError(sub);
+            }
+            Py_DECREF(dict);
+            Py_DECREF(sub);
+            if (rc <= 0) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case LIST_APPEND: {
+            oparg = CURRENT_OPARG();
+            PyObject *v;
+            PyObject *list;
+            v = stack_pointer[-1];
+            list = stack_pointer[-2 - (oparg-1)];
+            if (_PyList_AppendTakeRef((PyListObject *)list, v) < 0) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case SET_ADD: {
+            oparg = CURRENT_OPARG();
+            PyObject *v;
+            PyObject *set;
+            v = stack_pointer[-1];
+            set = stack_pointer[-2 - (oparg-1)];
+            int err = PySet_Add(set, v);
+            Py_DECREF(v);
+            if (err) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _STORE_SUBSCR: {
+            PyObject *sub;
+            PyObject *container;
+            PyObject *v;
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
+            v = stack_pointer[-3];
+            /* container[sub] = v */
+            int err = PyObject_SetItem(container, sub, v);
+            Py_DECREF(v);
+            Py_DECREF(container);
+            Py_DECREF(sub);
+            if (err) goto pop_3_error_tier_two;
+            STACK_SHRINK(3);
+            break;
+        }
+
+        case STORE_SUBSCR_LIST_INT: {
+            PyObject *sub;
+            PyObject *list;
+            PyObject *value;
+            sub = stack_pointer[-1];
+            list = stack_pointer[-2];
+            value = stack_pointer[-3];
+            DEOPT_IF(!PyLong_CheckExact(sub), STORE_SUBSCR);
+            DEOPT_IF(!PyList_CheckExact(list), STORE_SUBSCR);
+
+            // Ensure nonnegative, zero-or-one-digit ints.
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), STORE_SUBSCR);
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            // Ensure index < len(list)
+            DEOPT_IF(index >= PyList_GET_SIZE(list), STORE_SUBSCR);
+            STAT_INC(STORE_SUBSCR, hit);
+
+            PyObject *old_value = PyList_GET_ITEM(list, index);
+            PyList_SET_ITEM(list, index, value);
+            assert(old_value != NULL);
+            Py_DECREF(old_value);
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(list);
+            STACK_SHRINK(3);
+            break;
+        }
+
+        case STORE_SUBSCR_DICT: {
+            PyObject *sub;
+            PyObject *dict;
+            PyObject *value;
+            sub = stack_pointer[-1];
+            dict = stack_pointer[-2];
+            value = stack_pointer[-3];
+            DEOPT_IF(!PyDict_CheckExact(dict), STORE_SUBSCR);
+            STAT_INC(STORE_SUBSCR, hit);
+            int err = _PyDict_SetItem_Take2((PyDictObject *)dict, sub, value);
+            Py_DECREF(dict);
+            if (err) goto pop_3_error_tier_two;
+            STACK_SHRINK(3);
+            break;
+        }
+
+        case DELETE_SUBSCR: {
+            PyObject *sub;
+            PyObject *container;
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
+            /* del container[sub] */
+            int err = PyObject_DelItem(container, sub);
+            Py_DECREF(container);
+            Py_DECREF(sub);
+            if (err) goto pop_2_error_tier_two;
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case CALL_INTRINSIC_1: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            assert(oparg <= MAX_INTRINSIC_1);
+            res = _PyIntrinsics_UnaryFunctions[oparg].func(tstate, value);
+            Py_DECREF(value);
+            if (res == NULL) goto pop_1_error_tier_two;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case CALL_INTRINSIC_2: {
+            oparg = CURRENT_OPARG();
+            PyObject *value1;
+            PyObject *value2;
+            PyObject *res;
+            value1 = stack_pointer[-1];
+            value2 = stack_pointer[-2];
+            assert(oparg <= MAX_INTRINSIC_2);
+            res = _PyIntrinsics_BinaryFunctions[oparg].func(tstate, value2, value1);
+            Py_DECREF(value2);
+            Py_DECREF(value1);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case _POP_FRAME: {
+            PyObject *retval;
+            retval = stack_pointer[-1];
+            STACK_SHRINK(1);
+            #if TIER_ONE
+            assert(frame != &entry_frame);
+            #endif
+            STORE_SP();
+            assert(EMPTY());
+            _Py_LeaveRecursiveCallPy(tstate);
+            // GH-99729: We need to unlink the frame *before* clearing it:
+            _PyInterpreterFrame *dying = frame;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
+            _PyFrame_StackPush(frame, retval);
+            LOAD_SP();
+            LOAD_IP(frame->return_offset);
+#if LLTRACE && TIER_ONE
+            lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+            if (lltrace < 0) {
+                goto exit_unwind;
+            }
+#endif
+            break;
+        }
+
+        case GET_AITER: {
+            PyObject *obj;
+            PyObject *iter;
+            obj = stack_pointer[-1];
+            unaryfunc getter = NULL;
+            PyTypeObject *type = Py_TYPE(obj);
+
+            if (type->tp_as_async != NULL) {
+                getter = type->tp_as_async->am_aiter;
+            }
+
+            if (getter == NULL) {
+                _PyErr_Format(tstate, PyExc_TypeError,
+                              "'async for' requires an object with "
+                              "__aiter__ method, got %.100s",
+                              type->tp_name);
+                Py_DECREF(obj);
+                if (true) goto pop_1_error_tier_two;
+            }
+
+            iter = (*getter)(obj);
+            Py_DECREF(obj);
+            if (iter == NULL) goto pop_1_error_tier_two;
+
+            if (Py_TYPE(iter)->tp_as_async == NULL ||
+                    Py_TYPE(iter)->tp_as_async->am_anext == NULL) {
+
+                _PyErr_Format(tstate, PyExc_TypeError,
+                              "'async for' received an object from __aiter__ "
+                              "that does not implement __anext__: %.100s",
+                              Py_TYPE(iter)->tp_name);
+                Py_DECREF(iter);
+                if (true) goto pop_1_error_tier_two;
+            }
+            stack_pointer[-1] = iter;
+            break;
+        }
+
+        case GET_ANEXT: {
+            PyObject *aiter;
+            PyObject *awaitable;
+            aiter = stack_pointer[-1];
+            unaryfunc getter = NULL;
+            PyObject *next_iter = NULL;
+            PyTypeObject *type = Py_TYPE(aiter);
+
+            if (PyAsyncGen_CheckExact(aiter)) {
+                awaitable = type->tp_as_async->am_anext(aiter);
+                if (awaitable == NULL) {
+                    GOTO_ERROR(error);
+                }
+            } else {
+                if (type->tp_as_async != NULL){
+                    getter = type->tp_as_async->am_anext;
+                }
+
+                if (getter != NULL) {
+                    next_iter = (*getter)(aiter);
+                    if (next_iter == NULL) {
+                        GOTO_ERROR(error);
+                    }
+                }
+                else {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'async for' requires an iterator with "
+                                  "__anext__ method, got %.100s",
+                                  type->tp_name);
+                    GOTO_ERROR(error);
+                }
+
+                awaitable = _PyCoro_GetAwaitableIter(next_iter);
+                if (awaitable == NULL) {
+                    _PyErr_FormatFromCause(
+                        PyExc_TypeError,
+                        "'async for' received an invalid object "
+                        "from __anext__: %.100s",
+                        Py_TYPE(next_iter)->tp_name);
+
+                    Py_DECREF(next_iter);
+                    GOTO_ERROR(error);
+                } else {
+                    Py_DECREF(next_iter);
+                }
+            }
+            STACK_GROW(1);
+            stack_pointer[-1] = awaitable;
+            break;
+        }
+
+        case GET_AWAITABLE: {
+            oparg = CURRENT_OPARG();
+            PyObject *iterable;
+            PyObject *iter;
+            iterable = stack_pointer[-1];
+            iter = _PyCoro_GetAwaitableIter(iterable);
+
+            if (iter == NULL) {
+                _PyEval_FormatAwaitableError(tstate, Py_TYPE(iterable), oparg);
+            }
+
+            Py_DECREF(iterable);
+
+            if (iter != NULL && PyCoro_CheckExact(iter)) {
+                PyObject *yf = _PyGen_yf((PyGenObject*)iter);
+                if (yf != NULL) {
+                    /* `iter` is a coroutine object that is being
+                       awaited, `yf` is a pointer to the current awaitable
+                       being awaited on. */
+                    Py_DECREF(yf);
+                    Py_CLEAR(iter);
+                    _PyErr_SetString(tstate, PyExc_RuntimeError,
+                                     "coroutine is being awaited already");
+                    /* The code below jumps to `error` if `iter` is NULL. */
+                }
+            }
+
+            if (iter == NULL) goto pop_1_error_tier_two;
+            stack_pointer[-1] = iter;
+            break;
+        }
+
+        case POP_EXCEPT: {
+            PyObject *exc_value;
+            exc_value = stack_pointer[-1];
+            _PyErr_StackItem *exc_info = tstate->exc_info;
+            Py_XSETREF(exc_info->exc_value, exc_value);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case LOAD_ASSERTION_ERROR: {
+            PyObject *value;
+            value = Py_NewRef(PyExc_AssertionError);
+            STACK_GROW(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case LOAD_BUILD_CLASS: {
+            PyObject *bc;
+            if (PyMapping_GetOptionalItem(BUILTINS(), &_Py_ID(__build_class__), &bc) < 0) goto error_tier_two;
+            if (bc == NULL) {
+                _PyErr_SetString(tstate, PyExc_NameError,
+                                 "__build_class__ not found");
+                if (true) goto error_tier_two;
+            }
+            STACK_GROW(1);
+            stack_pointer[-1] = bc;
+            break;
+        }
+
+        case STORE_NAME: {
+            oparg = CURRENT_OPARG();
+            PyObject *v;
+            v = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            PyObject *ns = LOCALS();
+            int err;
+            if (ns == NULL) {
+                _PyErr_Format(tstate, PyExc_SystemError,
+                              "no locals found when storing %R", name);
+                Py_DECREF(v);
+                if (true) goto pop_1_error_tier_two;
+            }
+            if (PyDict_CheckExact(ns))
+                err = PyDict_SetItem(ns, name, v);
+            else
+                err = PyObject_SetItem(ns, name, v);
+            Py_DECREF(v);
+            if (err) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case DELETE_NAME: {
+            oparg = CURRENT_OPARG();
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            PyObject *ns = LOCALS();
+            int err;
+            if (ns == NULL) {
+                _PyErr_Format(tstate, PyExc_SystemError,
+                              "no locals when deleting %R", name);
+                GOTO_ERROR(error);
+            }
+            err = PyObject_DelItem(ns, name);
+            // Can't use ERROR_IF here.
+            if (err != 0) {
+                _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                          NAME_ERROR_MSG,
+                                          name);
+                GOTO_ERROR(error);
+            }
+            break;
+        }
+
+        case _UNPACK_SEQUENCE: {
+            oparg = CURRENT_OPARG();
+            PyObject *seq;
+            seq = stack_pointer[-1];
+            PyObject **top = stack_pointer + oparg - 1;
+            int res = _PyEval_UnpackIterable(tstate, seq, oparg, -1, top);
+            Py_DECREF(seq);
+            if (res == 0) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_SEQUENCE_TWO_TUPLE: {
+            oparg = CURRENT_OPARG();
+            PyObject *seq;
+            PyObject **values;
+            seq = stack_pointer[-1];
+            values = stack_pointer - 1;
+            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
+            DEOPT_IF(PyTuple_GET_SIZE(seq) != 2, UNPACK_SEQUENCE);
+            assert(oparg == 2);
+            STAT_INC(UNPACK_SEQUENCE, hit);
+            values[0] = Py_NewRef(PyTuple_GET_ITEM(seq, 1));
+            values[1] = Py_NewRef(PyTuple_GET_ITEM(seq, 0));
+            Py_DECREF(seq);
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_SEQUENCE_TUPLE: {
+            oparg = CURRENT_OPARG();
+            PyObject *seq;
+            PyObject **values;
+            seq = stack_pointer[-1];
+            values = stack_pointer - 1;
+            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
+            DEOPT_IF(PyTuple_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
+            STAT_INC(UNPACK_SEQUENCE, hit);
+            PyObject **items = _PyTuple_ITEMS(seq);
+            for (int i = oparg; --i >= 0; ) {
+                *values++ = Py_NewRef(items[i]);
+            }
+            Py_DECREF(seq);
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_SEQUENCE_LIST: {
+            oparg = CURRENT_OPARG();
+            PyObject *seq;
+            PyObject **values;
+            seq = stack_pointer[-1];
+            values = stack_pointer - 1;
+            DEOPT_IF(!PyList_CheckExact(seq), UNPACK_SEQUENCE);
+            DEOPT_IF(PyList_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
+            STAT_INC(UNPACK_SEQUENCE, hit);
+            PyObject **items = _PyList_ITEMS(seq);
+            for (int i = oparg; --i >= 0; ) {
+                *values++ = Py_NewRef(items[i]);
+            }
+            Py_DECREF(seq);
+            STACK_SHRINK(1);
+            STACK_GROW(oparg);
+            break;
+        }
+
+        case UNPACK_EX: {
+            oparg = CURRENT_OPARG();
+            PyObject *seq;
+            seq = stack_pointer[-1];
+            int totalargs = 1 + (oparg & 0xFF) + (oparg >> 8);
+            PyObject **top = stack_pointer + totalargs - 1;
+            int res = _PyEval_UnpackIterable(tstate, seq, oparg & 0xFF, oparg >> 8, top);
+            Py_DECREF(seq);
+            if (res == 0) goto pop_1_error_tier_two;
+            STACK_GROW((oparg & 0xFF) + (oparg >> 8));
+            break;
+        }
+
+        case _STORE_ATTR: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *v;
+            owner = stack_pointer[-1];
+            v = stack_pointer[-2];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err = PyObject_SetAttr(owner, name, v);
+            Py_DECREF(v);
+            Py_DECREF(owner);
+            if (err) goto pop_2_error_tier_two;
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case DELETE_ATTR: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err = PyObject_DelAttr(owner, name);
+            Py_DECREF(owner);
+            if (err) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case STORE_GLOBAL: {
+            oparg = CURRENT_OPARG();
+            PyObject *v;
+            v = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err = PyDict_SetItem(GLOBALS(), name, v);
+            Py_DECREF(v);
+            if (err) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case DELETE_GLOBAL: {
+            oparg = CURRENT_OPARG();
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err;
+            err = PyDict_DelItem(GLOBALS(), name);
+            // Can't use ERROR_IF here.
+            if (err != 0) {
+                if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
+                    _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                              NAME_ERROR_MSG, name);
+                }
+                GOTO_ERROR(error);
+            }
+            break;
+        }
+
+        case LOAD_LOCALS: {
+            PyObject *locals;
+            locals = LOCALS();
+            if (locals == NULL) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "no locals found");
+                if (true) goto error_tier_two;
+            }
+            Py_INCREF(locals);
+            STACK_GROW(1);
+            stack_pointer[-1] = locals;
+            break;
+        }
+
+        case LOAD_FROM_DICT_OR_GLOBALS: {
+            oparg = CURRENT_OPARG();
+            PyObject *mod_or_class_dict;
+            PyObject *v;
+            mod_or_class_dict = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
+                GOTO_ERROR(error);
+            }
+            if (v == NULL) {
+                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
+                    GOTO_ERROR(error);
+                }
+                if (v == NULL) {
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                        GOTO_ERROR(error);
+                    }
+                    if (v == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                                    tstate, PyExc_NameError,
+                                    NAME_ERROR_MSG, name);
+                        GOTO_ERROR(error);
+                    }
+                }
+            }
+            Py_DECREF(mod_or_class_dict);
+            stack_pointer[-1] = v;
+            break;
+        }
+
+        case LOAD_NAME: {
+            oparg = CURRENT_OPARG();
+            PyObject *v;
+            PyObject *mod_or_class_dict = LOCALS();
+            if (mod_or_class_dict == NULL) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "no locals found");
+                if (true) goto error_tier_two;
+            }
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
+                GOTO_ERROR(error);
+            }
+            if (v == NULL) {
+                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
+                    GOTO_ERROR(error);
+                }
+                if (v == NULL) {
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                        GOTO_ERROR(error);
+                    }
+                    if (v == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                                    tstate, PyExc_NameError,
+                                    NAME_ERROR_MSG, name);
+                        GOTO_ERROR(error);
+                    }
+                }
+            }
+            STACK_GROW(1);
+            stack_pointer[-1] = v;
+            break;
+        }
+
+        case _LOAD_GLOBAL: {
+            oparg = CURRENT_OPARG();
+            PyObject *res;
+            PyObject *null = NULL;
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+            if (PyDict_CheckExact(GLOBALS())
+                && PyDict_CheckExact(BUILTINS()))
+            {
+                res = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
+                                         (PyDictObject *)BUILTINS(),
+                                         name);
+                if (res == NULL) {
+                    if (!_PyErr_Occurred(tstate)) {
+                        /* _PyDict_LoadGlobal() returns NULL without raising
+                         * an exception if the key doesn't exist */
+                        _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                                  NAME_ERROR_MSG, name);
+                    }
+                    if (true) goto error_tier_two;
+                }
+                Py_INCREF(res);
+            }
+            else {
+                /* Slow-path if globals or builtins is not a dict */
+                /* namespace 1: globals */
+                if (PyMapping_GetOptionalItem(GLOBALS(), name, &res) < 0) goto error_tier_two;
+                if (res == NULL) {
+                    /* namespace 2: builtins */
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &res) < 0) goto error_tier_two;
+                    if (res == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                                    tstate, PyExc_NameError,
+                                    NAME_ERROR_MSG, name);
+                        if (true) goto error_tier_two;
+                    }
+                }
+            }
+            null = NULL;
+            STACK_GROW(1);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = res;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _GUARD_GLOBALS_VERSION: {
+            uint16_t version = (uint16_t)CURRENT_OPERAND();
+            PyDictObject *dict = (PyDictObject *)GLOBALS();
+            DEOPT_IF(!PyDict_CheckExact(dict), _GUARD_GLOBALS_VERSION);
+            DEOPT_IF(dict->ma_keys->dk_version != version, _GUARD_GLOBALS_VERSION);
+            assert(DK_IS_UNICODE(dict->ma_keys));
+            break;
+        }
+
+        case _GUARD_BUILTINS_VERSION: {
+            uint16_t version = (uint16_t)CURRENT_OPERAND();
+            PyDictObject *dict = (PyDictObject *)BUILTINS();
+            DEOPT_IF(!PyDict_CheckExact(dict), _GUARD_BUILTINS_VERSION);
+            DEOPT_IF(dict->ma_keys->dk_version != version, _GUARD_BUILTINS_VERSION);
+            assert(DK_IS_UNICODE(dict->ma_keys));
+            break;
+        }
+
+        case _LOAD_GLOBAL_MODULE: {
+            oparg = CURRENT_OPARG();
+            PyObject *res;
+            PyObject *null = NULL;
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            PyDictObject *dict = (PyDictObject *)GLOBALS();
+            PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(dict->ma_keys);
+            res = entries[index].me_value;
+            DEOPT_IF(res == NULL, _LOAD_GLOBAL_MODULE);
+            Py_INCREF(res);
+            STAT_INC(LOAD_GLOBAL, hit);
+            null = NULL;
+            STACK_GROW(1);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = res;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _LOAD_GLOBAL_BUILTINS: {
+            oparg = CURRENT_OPARG();
+            PyObject *res;
+            PyObject *null = NULL;
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            PyDictObject *bdict = (PyDictObject *)BUILTINS();
+            PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(bdict->ma_keys);
+            res = entries[index].me_value;
+            DEOPT_IF(res == NULL, _LOAD_GLOBAL_BUILTINS);
+            Py_INCREF(res);
+            STAT_INC(LOAD_GLOBAL, hit);
+            null = NULL;
+            STACK_GROW(1);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = res;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case DELETE_FAST: {
+            oparg = CURRENT_OPARG();
+            PyObject *v = GETLOCAL(oparg);
+            if (v == NULL) goto unbound_local_error_tier_two;
+            SETLOCAL(oparg, NULL);
+            break;
+        }
+
+        case MAKE_CELL: {
+            oparg = CURRENT_OPARG();
+            // "initial" is probably NULL but not if it's an arg (or set
+            // via PyFrame_LocalsToFast() before MAKE_CELL has run).
+            PyObject *initial = GETLOCAL(oparg);
+            PyObject *cell = PyCell_New(initial);
+            if (cell == NULL) {
+                GOTO_ERROR(error);
+            }
+            SETLOCAL(oparg, cell);
+            break;
+        }
+
+        case DELETE_DEREF: {
+            oparg = CURRENT_OPARG();
+            PyObject *cell = GETLOCAL(oparg);
+            PyObject *oldobj = PyCell_GET(cell);
+            // Can't use ERROR_IF here.
+            // Fortunately we don't need its superpower.
+            if (oldobj == NULL) {
+                _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                GOTO_ERROR(error);
+            }
+            PyCell_SET(cell, NULL);
+            Py_DECREF(oldobj);
+            break;
+        }
+
+        case LOAD_FROM_DICT_OR_DEREF: {
+            oparg = CURRENT_OPARG();
+            PyObject *class_dict;
+            PyObject *value;
+            class_dict = stack_pointer[-1];
+            PyObject *name;
+            assert(class_dict);
+            assert(oparg >= 0 && oparg < _PyFrame_GetCode(frame)->co_nlocalsplus);
+            name = PyTuple_GET_ITEM(_PyFrame_GetCode(frame)->co_localsplusnames, oparg);
+            if (PyMapping_GetOptionalItem(class_dict, name, &value) < 0) {
+                GOTO_ERROR(error);
+            }
+            if (!value) {
+                PyObject *cell = GETLOCAL(oparg);
+                value = PyCell_GET(cell);
+                if (value == NULL) {
+                    _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                    GOTO_ERROR(error);
+                }
+                Py_INCREF(value);
+            }
+            Py_DECREF(class_dict);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case LOAD_DEREF: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            PyObject *cell = GETLOCAL(oparg);
+            value = PyCell_GET(cell);
+            if (value == NULL) {
+                _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                if (true) goto error_tier_two;
+            }
+            Py_INCREF(value);
+            STACK_GROW(1);
+            stack_pointer[-1] = value;
+            break;
+        }
+
+        case STORE_DEREF: {
+            oparg = CURRENT_OPARG();
+            PyObject *v;
+            v = stack_pointer[-1];
+            PyObject *cell = GETLOCAL(oparg);
+            PyObject *oldobj = PyCell_GET(cell);
+            PyCell_SET(cell, v);
+            Py_XDECREF(oldobj);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case COPY_FREE_VARS: {
+            oparg = CURRENT_OPARG();
+            /* Copy closure variables to free variables */
+            PyCodeObject *co = _PyFrame_GetCode(frame);
+            assert(PyFunction_Check(frame->f_funcobj));
+            PyObject *closure = ((PyFunctionObject *)frame->f_funcobj)->func_closure;
+            assert(oparg == co->co_nfreevars);
+            int offset = co->co_nlocalsplus - oparg;
+            for (int i = 0; i < oparg; ++i) {
+                PyObject *o = PyTuple_GET_ITEM(closure, i);
+                frame->localsplus[offset + i] = Py_NewRef(o);
+            }
+            break;
+        }
+
+        case BUILD_STRING: {
+            oparg = CURRENT_OPARG();
+            PyObject **pieces;
+            PyObject *str;
+            pieces = stack_pointer - oparg;
+            str = _PyUnicode_JoinArray(&_Py_STR(empty), pieces, oparg);
+            for (int _i = oparg; --_i >= 0;) {
+                Py_DECREF(pieces[_i]);
+            }
+            if (str == NULL) { STACK_SHRINK(oparg); goto error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            stack_pointer[-1] = str;
+            break;
+        }
+
+        case BUILD_TUPLE: {
+            oparg = CURRENT_OPARG();
+            PyObject **values;
+            PyObject *tup;
+            values = stack_pointer - oparg;
+            tup = _PyTuple_FromArraySteal(values, oparg);
+            if (tup == NULL) { STACK_SHRINK(oparg); goto error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            stack_pointer[-1] = tup;
+            break;
+        }
+
+        case BUILD_LIST: {
+            oparg = CURRENT_OPARG();
+            PyObject **values;
+            PyObject *list;
+            values = stack_pointer - oparg;
+            list = _PyList_FromArraySteal(values, oparg);
+            if (list == NULL) { STACK_SHRINK(oparg); goto error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            stack_pointer[-1] = list;
+            break;
+        }
+
+        case LIST_EXTEND: {
+            oparg = CURRENT_OPARG();
+            PyObject *iterable;
+            PyObject *list;
+            iterable = stack_pointer[-1];
+            list = stack_pointer[-2 - (oparg-1)];
+            PyObject *none_val = _PyList_Extend((PyListObject *)list, iterable);
+            if (none_val == NULL) {
+                if (_PyErr_ExceptionMatches(tstate, PyExc_TypeError) &&
+                   (Py_TYPE(iterable)->tp_iter == NULL && !PySequence_Check(iterable)))
+                {
+                    _PyErr_Clear(tstate);
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                          "Value after * must be an iterable, not %.200s",
+                          Py_TYPE(iterable)->tp_name);
+                }
+                Py_DECREF(iterable);
+                if (true) goto pop_1_error_tier_two;
+            }
+            assert(Py_IsNone(none_val));
+            Py_DECREF(iterable);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case SET_UPDATE: {
+            oparg = CURRENT_OPARG();
+            PyObject *iterable;
+            PyObject *set;
+            iterable = stack_pointer[-1];
+            set = stack_pointer[-2 - (oparg-1)];
+            int err = _PySet_Update(set, iterable);
+            Py_DECREF(iterable);
+            if (err < 0) goto pop_1_error_tier_two;
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case BUILD_SET: {
+            oparg = CURRENT_OPARG();
+            PyObject **values;
+            PyObject *set;
+            values = stack_pointer - oparg;
+            set = PySet_New(NULL);
+            if (set == NULL)
+                GOTO_ERROR(error);
+            int err = 0;
+            for (int i = 0; i < oparg; i++) {
+                PyObject *item = values[i];
+                if (err == 0)
+                    err = PySet_Add(set, item);
+                Py_DECREF(item);
+            }
+            if (err != 0) {
+                Py_DECREF(set);
+                if (true) { STACK_SHRINK(oparg); goto error_tier_two; }
+            }
+            STACK_SHRINK(oparg);
+            STACK_GROW(1);
+            stack_pointer[-1] = set;
+            break;
+        }
+
+        case BUILD_MAP: {
+            oparg = CURRENT_OPARG();
+            PyObject **values;
+            PyObject *map;
+            values = stack_pointer - oparg*2;
+            map = _PyDict_FromItems(
+                    values, 2,
+                    values+1, 2,
+                    oparg);
+            for (int _i = oparg*2; --_i >= 0;) {
+                Py_DECREF(values[_i]);
+            }
+            if (map == NULL) { STACK_SHRINK(oparg*2); goto error_tier_two; }
+            STACK_SHRINK(oparg*2);
+            STACK_GROW(1);
+            stack_pointer[-1] = map;
+            break;
+        }
+
+        case SETUP_ANNOTATIONS: {
+            int err;
+            PyObject *ann_dict;
+            if (LOCALS() == NULL) {
+                _PyErr_Format(tstate, PyExc_SystemError,
+                              "no locals found when setting up annotations");
+                if (true) goto error_tier_two;
+            }
+            /* check if __annotations__ in locals()... */
+            if (PyMapping_GetOptionalItem(LOCALS(), &_Py_ID(__annotations__), &ann_dict) < 0) goto error_tier_two;
+            if (ann_dict == NULL) {
+                ann_dict = PyDict_New();
+                if (ann_dict == NULL) goto error_tier_two;
+                err = PyObject_SetItem(LOCALS(), &_Py_ID(__annotations__),
+                                       ann_dict);
+                Py_DECREF(ann_dict);
+                if (err) goto error_tier_two;
+            }
+            else {
+                Py_DECREF(ann_dict);
+            }
+            break;
+        }
+
+        case BUILD_CONST_KEY_MAP: {
+            oparg = CURRENT_OPARG();
+            PyObject *keys;
+            PyObject **values;
+            PyObject *map;
+            keys = stack_pointer[-1];
+            values = stack_pointer - 1 - oparg;
+            if (!PyTuple_CheckExact(keys) ||
+                PyTuple_GET_SIZE(keys) != (Py_ssize_t)oparg) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "bad BUILD_CONST_KEY_MAP keys argument");
+                GOTO_ERROR(error);  // Pop the keys and values.
+            }
+            map = _PyDict_FromItems(
+                    &PyTuple_GET_ITEM(keys, 0), 1,
+                    values, 1, oparg);
+            for (int _i = oparg; --_i >= 0;) {
+                Py_DECREF(values[_i]);
+            }
+            Py_DECREF(keys);
+            if (map == NULL) { STACK_SHRINK(oparg); goto pop_1_error_tier_two; }
+            STACK_SHRINK(oparg);
+            stack_pointer[-1] = map;
+            break;
+        }
+
+        case DICT_UPDATE: {
+            oparg = CURRENT_OPARG();
+            PyObject *update;
+            PyObject *dict;
+            update = stack_pointer[-1];
+            dict = stack_pointer[-2 - (oparg - 1)];
+            if (PyDict_Update(dict, update) < 0) {
+                if (_PyErr_ExceptionMatches(tstate, PyExc_AttributeError)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                    "'%.200s' object is not a mapping",
+                                    Py_TYPE(update)->tp_name);
+                }
+                Py_DECREF(update);
+                if (true) goto pop_1_error_tier_two;
+            }
+            Py_DECREF(update);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case DICT_MERGE: {
+            oparg = CURRENT_OPARG();
+            PyObject *update;
+            PyObject *dict;
+            PyObject *callable;
+            update = stack_pointer[-1];
+            dict = stack_pointer[-2 - (oparg - 1)];
+            callable = stack_pointer[-5 - (oparg - 1)];
+            if (_PyDict_MergeEx(dict, update, 2) < 0) {
+                _PyEval_FormatKwargsError(tstate, callable, update);
+                Py_DECREF(update);
+                if (true) goto pop_1_error_tier_two;
+            }
+            Py_DECREF(update);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case MAP_ADD: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            PyObject *key;
+            PyObject *dict;
+            value = stack_pointer[-1];
+            key = stack_pointer[-2];
+            dict = stack_pointer[-3 - (oparg - 1)];
+            assert(PyDict_CheckExact(dict));
+            /* dict[key] = value */
+            // Do not DECREF INPUTS because the function steals the references
+            if (_PyDict_SetItem_Take2((PyDictObject *)dict, key, value) != 0) goto pop_2_error_tier_two;
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case LOAD_SUPER_ATTR_ATTR: {
+            oparg = CURRENT_OPARG();
+            PyObject *self;
+            PyObject *class;
+            PyObject *global_super;
+            PyObject *attr;
+            self = stack_pointer[-1];
+            class = stack_pointer[-2];
+            global_super = stack_pointer[-3];
+            assert(!(oparg & 1));
+            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
+            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
+            STAT_INC(LOAD_SUPER_ATTR, hit);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            attr = _PySuper_Lookup((PyTypeObject *)class, self, name, NULL);
+            Py_DECREF(global_super);
+            Py_DECREF(class);
+            Py_DECREF(self);
+            if (attr == NULL) goto pop_3_error_tier_two;
+            STACK_SHRINK(2);
+            stack_pointer[-1] = attr;
+            break;
+        }
+
+        case LOAD_SUPER_ATTR_METHOD: {
+            oparg = CURRENT_OPARG();
+            PyObject *self;
+            PyObject *class;
+            PyObject *global_super;
+            PyObject *attr;
+            PyObject *self_or_null;
+            self = stack_pointer[-1];
+            class = stack_pointer[-2];
+            global_super = stack_pointer[-3];
+            assert(oparg & 1);
+            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
+            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
+            STAT_INC(LOAD_SUPER_ATTR, hit);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            PyTypeObject *cls = (PyTypeObject *)class;
+            int method_found = 0;
+            attr = _PySuper_Lookup(cls, self, name,
+                                   Py_TYPE(self)->tp_getattro == PyObject_GenericGetAttr ? &method_found : NULL);
+            Py_DECREF(global_super);
+            Py_DECREF(class);
+            if (attr == NULL) {
+                Py_DECREF(self);
+                if (true) goto pop_3_error_tier_two;
+            }
+            if (method_found) {
+                self_or_null = self; // transfer ownership
+            } else {
+                Py_DECREF(self);
+                self_or_null = NULL;
+            }
+            STACK_SHRINK(1);
+            stack_pointer[-2] = attr;
+            stack_pointer[-1] = self_or_null;
+            break;
+        }
+
+        case _LOAD_ATTR: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self_or_null = NULL;
+            owner = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 1);
+            if (oparg & 1) {
+                /* Designed to work in tandem with CALL, pushes two values. */
+                attr = NULL;
+                if (_PyObject_GetMethod(owner, name, &attr)) {
+                    /* We can bypass temporary bound method object.
+                       meth is unbound method and obj is self.
+                       meth | self | arg1 | ... | argN
+                     */
+                    assert(attr != NULL);  // No errors on this branch
+                    self_or_null = owner;  // Transfer ownership
+                }
+                else {
+                    /* meth is not an unbound method (but a regular attr, or
+                       something was returned by a descriptor protocol).  Set
+                       the second element of the stack to NULL, to signal
+                       CALL that it's not a method call.
+                       NULL | meth | arg1 | ... | argN
+                    */
+                    Py_DECREF(owner);
+                    if (attr == NULL) goto pop_1_error_tier_two;
+                    self_or_null = NULL;
+                }
+            }
+            else {
+                /* Classic, pushes one value. */
+                attr = PyObject_GetAttr(owner, name);
+                Py_DECREF(owner);
+                if (attr == NULL) goto pop_1_error_tier_two;
+            }
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = attr;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = self_or_null; }
+            break;
+        }
+
+        case _GUARD_TYPE_VERSION: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            uint32_t type_version = (uint32_t)CURRENT_OPERAND();
+            PyTypeObject *tp = Py_TYPE(owner);
+            assert(type_version != 0);
+            DEOPT_IF(tp->tp_version_tag != type_version, _GUARD_TYPE_VERSION);
+            break;
+        }
+
+        case _CHECK_MANAGED_OBJECT_HAS_VALUES: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            assert(Py_TYPE(owner)->tp_dictoffset < 0);
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv), _CHECK_MANAGED_OBJECT_HAS_VALUES);
+            break;
+        }
+
+        case _LOAD_ATTR_INSTANCE_VALUE: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            owner = stack_pointer[-1];
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            attr = _PyDictOrValues_GetValues(dorv)->values[index];
+            DEOPT_IF(attr == NULL, _LOAD_ATTR_INSTANCE_VALUE);
+            STAT_INC(LOAD_ATTR, hit);
+            Py_INCREF(attr);
+            null = NULL;
+            Py_DECREF(owner);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = attr;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _CHECK_ATTR_MODULE: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            uint32_t type_version = (uint32_t)CURRENT_OPERAND();
+            DEOPT_IF(!PyModule_CheckExact(owner), _CHECK_ATTR_MODULE);
+            PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
+            assert(dict != NULL);
+            DEOPT_IF(dict->ma_keys->dk_version != type_version, _CHECK_ATTR_MODULE);
+            break;
+        }
+
+        case _LOAD_ATTR_MODULE: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            owner = stack_pointer[-1];
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
+            assert(dict->ma_keys->dk_kind == DICT_KEYS_UNICODE);
+            assert(index < dict->ma_keys->dk_nentries);
+            PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + index;
+            attr = ep->me_value;
+            DEOPT_IF(attr == NULL, _LOAD_ATTR_MODULE);
+            STAT_INC(LOAD_ATTR, hit);
+            Py_INCREF(attr);
+            null = NULL;
+            Py_DECREF(owner);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = attr;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _CHECK_ATTR_WITH_HINT: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(_PyDictOrValues_IsValues(dorv), _CHECK_ATTR_WITH_HINT);
+            PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+            DEOPT_IF(dict == NULL, _CHECK_ATTR_WITH_HINT);
+            assert(PyDict_CheckExact((PyObject *)dict));
+            break;
+        }
+
+        case _LOAD_ATTR_WITH_HINT: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            owner = stack_pointer[-1];
+            uint16_t hint = (uint16_t)CURRENT_OPERAND();
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, _LOAD_ATTR_WITH_HINT);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+            if (DK_IS_UNICODE(dict->ma_keys)) {
+                PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
+                DEOPT_IF(ep->me_key != name, _LOAD_ATTR_WITH_HINT);
+                attr = ep->me_value;
+            }
+            else {
+                PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
+                DEOPT_IF(ep->me_key != name, _LOAD_ATTR_WITH_HINT);
+                attr = ep->me_value;
+            }
+            DEOPT_IF(attr == NULL, _LOAD_ATTR_WITH_HINT);
+            STAT_INC(LOAD_ATTR, hit);
+            Py_INCREF(attr);
+            null = NULL;
+            Py_DECREF(owner);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = attr;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _LOAD_ATTR_SLOT: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            owner = stack_pointer[-1];
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            char *addr = (char *)owner + index;
+            attr = *(PyObject **)addr;
+            DEOPT_IF(attr == NULL, _LOAD_ATTR_SLOT);
+            STAT_INC(LOAD_ATTR, hit);
+            Py_INCREF(attr);
+            null = NULL;
+            Py_DECREF(owner);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = attr;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _CHECK_ATTR_CLASS: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            uint32_t type_version = (uint32_t)CURRENT_OPERAND();
+            DEOPT_IF(!PyType_Check(owner), _CHECK_ATTR_CLASS);
+            assert(type_version != 0);
+            DEOPT_IF(((PyTypeObject *)owner)->tp_version_tag != type_version, _CHECK_ATTR_CLASS);
+            break;
+        }
+
+        case _LOAD_ATTR_CLASS: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            owner = stack_pointer[-1];
+            PyObject *descr = (PyObject *)CURRENT_OPERAND();
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            attr = Py_NewRef(descr);
+            null = NULL;
+            Py_DECREF(owner);
+            STACK_GROW(((oparg & 1) ? 1 : 0));
+            stack_pointer[-1 - (oparg & 1 ? 1 : 0)] = attr;
+            if (oparg & 1) { stack_pointer[-(oparg & 1 ? 1 : 0)] = null; }
+            break;
+        }
+
+        case _GUARD_DORV_VALUES: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), _GUARD_DORV_VALUES);
+            break;
+        }
+
+        case _STORE_ATTR_INSTANCE_VALUE: {
+            PyObject *owner;
+            PyObject *value;
+            owner = stack_pointer[-1];
+            value = stack_pointer[-2];
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            STAT_INC(STORE_ATTR, hit);
+            PyDictValues *values = _PyDictOrValues_GetValues(dorv);
+            PyObject *old_value = values->values[index];
+            values->values[index] = value;
+            if (old_value == NULL) {
+                _PyDictValues_AddToInsertionOrder(values, index);
+            }
+            else {
+                Py_DECREF(old_value);
+            }
+            Py_DECREF(owner);
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case _STORE_ATTR_SLOT: {
+            PyObject *owner;
+            PyObject *value;
+            owner = stack_pointer[-1];
+            value = stack_pointer[-2];
+            uint16_t index = (uint16_t)CURRENT_OPERAND();
+            char *addr = (char *)owner + index;
+            STAT_INC(STORE_ATTR, hit);
+            PyObject *old_value = *(PyObject **)addr;
+            *(PyObject **)addr = value;
+            Py_XDECREF(old_value);
+            Py_DECREF(owner);
+            STACK_SHRINK(2);
+            break;
+        }
+
+        case _COMPARE_OP: {
+            oparg = CURRENT_OPARG();
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            assert((oparg >> 5) <= Py_GE);
+            res = PyObject_RichCompare(left, right, oparg >> 5);
+            Py_DECREF(left);
+            Py_DECREF(right);
+            if (res == NULL) goto pop_2_error_tier_two;
+            if (oparg & 16) {
+                int res_bool = PyObject_IsTrue(res);
+                Py_DECREF(res);
+                if (res_bool < 0) goto pop_2_error_tier_two;
+                res = res_bool ? Py_True : Py_False;
+            }
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case COMPARE_OP_FLOAT: {
+            oparg = CURRENT_OPARG();
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyFloat_CheckExact(left), COMPARE_OP);
+            DEOPT_IF(!PyFloat_CheckExact(right), COMPARE_OP);
+            STAT_INC(COMPARE_OP, hit);
+            double dleft = PyFloat_AS_DOUBLE(left);
+            double dright = PyFloat_AS_DOUBLE(right);
+            // 1 if NaN, 2 if <, 4 if >, 8 if ==; this matches low four bits of the oparg
+            int sign_ish = COMPARISON_BIT(dleft, dright);
+            _Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
+            _Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
+            res = (sign_ish & oparg) ? Py_True : Py_False;
+            // It's always a bool, so we don't care about oparg & 16.
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case COMPARE_OP_INT: {
+            oparg = CURRENT_OPARG();
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(left), COMPARE_OP);
+            DEOPT_IF(!PyLong_CheckExact(right), COMPARE_OP);
+            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)left), COMPARE_OP);
+            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)right), COMPARE_OP);
+            STAT_INC(COMPARE_OP, hit);
+            assert(_PyLong_DigitCount((PyLongObject *)left) <= 1 &&
+                   _PyLong_DigitCount((PyLongObject *)right) <= 1);
+            Py_ssize_t ileft = _PyLong_CompactValue((PyLongObject *)left);
+            Py_ssize_t iright = _PyLong_CompactValue((PyLongObject *)right);
+            // 2 if <, 4 if >, 8 if ==; this matches the low 4 bits of the oparg
+            int sign_ish = COMPARISON_BIT(ileft, iright);
+            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+            res = (sign_ish & oparg) ? Py_True : Py_False;
+            // It's always a bool, so we don't care about oparg & 16.
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case COMPARE_OP_STR: {
+            oparg = CURRENT_OPARG();
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyUnicode_CheckExact(left), COMPARE_OP);
+            DEOPT_IF(!PyUnicode_CheckExact(right), COMPARE_OP);
+            STAT_INC(COMPARE_OP, hit);
+            int eq = _PyUnicode_Equal(left, right);
+            assert((oparg >> 5) == Py_EQ || (oparg >> 5) == Py_NE);
+            _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
+            _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
+            assert(eq == 0 || eq == 1);
+            assert((oparg & 0xf) == COMPARISON_NOT_EQUALS || (oparg & 0xf) == COMPARISON_EQUALS);
+            assert(COMPARISON_NOT_EQUALS + 1 == COMPARISON_EQUALS);
+            res = ((COMPARISON_NOT_EQUALS + eq) & oparg) ? Py_True : Py_False;
+            // It's always a bool, so we don't care about oparg & 16.
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case IS_OP: {
+            oparg = CURRENT_OPARG();
+            PyObject *right;
+            PyObject *left;
+            PyObject *b;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            int res = Py_Is(left, right) ^ oparg;
+            Py_DECREF(left);
+            Py_DECREF(right);
+            b = res ? Py_True : Py_False;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = b;
+            break;
+        }
+
+        case CONTAINS_OP: {
+            oparg = CURRENT_OPARG();
+            PyObject *right;
+            PyObject *left;
+            PyObject *b;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            int res = PySequence_Contains(right, left);
+            Py_DECREF(left);
+            Py_DECREF(right);
+            if (res < 0) goto pop_2_error_tier_two;
+            b = (res ^ oparg) ? Py_True : Py_False;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = b;
+            break;
+        }
+
+        case CHECK_EG_MATCH: {
+            PyObject *match_type;
+            PyObject *exc_value;
+            PyObject *rest;
+            PyObject *match;
+            match_type = stack_pointer[-1];
+            exc_value = stack_pointer[-2];
+            if (_PyEval_CheckExceptStarTypeValid(tstate, match_type) < 0) {
+                Py_DECREF(exc_value);
+                Py_DECREF(match_type);
+                if (true) goto pop_2_error_tier_two;
+            }
+
+            match = NULL;
+            rest = NULL;
+            int res = _PyEval_ExceptionGroupMatch(exc_value, match_type,
+                                                  &match, &rest);
+            Py_DECREF(exc_value);
+            Py_DECREF(match_type);
+            if (res < 0) goto pop_2_error_tier_two;
+
+            assert((match == NULL) == (rest == NULL));
+            if (match == NULL) goto pop_2_error_tier_two;
+
+            if (!Py_IsNone(match)) {
+                PyErr_SetHandledException(match);
+            }
+            stack_pointer[-2] = rest;
+            stack_pointer[-1] = match;
+            break;
+        }
+
+        case CHECK_EXC_MATCH: {
+            PyObject *right;
+            PyObject *left;
+            PyObject *b;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            assert(PyExceptionInstance_Check(left));
+            if (_PyEval_CheckExceptTypeValid(tstate, right) < 0) {
+                 Py_DECREF(right);
+                 if (true) goto pop_1_error_tier_two;
+            }
+
+            int res = PyErr_GivenExceptionMatches(left, right);
+            Py_DECREF(right);
+            b = res ? Py_True : Py_False;
+            stack_pointer[-1] = b;
+            break;
+        }
+
+        case _IS_NONE: {
+            PyObject *value;
+            PyObject *b;
+            value = stack_pointer[-1];
+            if (Py_IsNone(value)) {
+                b = Py_True;
+            }
+            else {
+                b = Py_False;
+                Py_DECREF(value);
+            }
+            stack_pointer[-1] = b;
+            break;
+        }
+
+        case GET_LEN: {
+            PyObject *obj;
+            PyObject *len_o;
+            obj = stack_pointer[-1];
+            // PUSH(len(TOS))
+            Py_ssize_t len_i = PyObject_Length(obj);
+            if (len_i < 0) goto error_tier_two;
+            len_o = PyLong_FromSsize_t(len_i);
+            if (len_o == NULL) goto error_tier_two;
+            STACK_GROW(1);
+            stack_pointer[-1] = len_o;
+            break;
+        }
+
+        case MATCH_CLASS: {
+            oparg = CURRENT_OPARG();
+            PyObject *names;
+            PyObject *type;
+            PyObject *subject;
+            PyObject *attrs;
+            names = stack_pointer[-1];
+            type = stack_pointer[-2];
+            subject = stack_pointer[-3];
+            // Pop TOS and TOS1. Set TOS to a tuple of attributes on success, or
+            // None on failure.
+            assert(PyTuple_CheckExact(names));
+            attrs = _PyEval_MatchClass(tstate, subject, type, oparg, names);
+            Py_DECREF(subject);
+            Py_DECREF(type);
+            Py_DECREF(names);
+            if (attrs) {
+                assert(PyTuple_CheckExact(attrs));  // Success!
+            }
+            else {
+                if (_PyErr_Occurred(tstate)) goto pop_3_error_tier_two;
+                attrs = Py_None;  // Failure!
+            }
+            STACK_SHRINK(2);
+            stack_pointer[-1] = attrs;
+            break;
+        }
+
+        case MATCH_MAPPING: {
+            PyObject *subject;
+            PyObject *res;
+            subject = stack_pointer[-1];
+            int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_MAPPING;
+            res = match ? Py_True : Py_False;
+            STACK_GROW(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case MATCH_SEQUENCE: {
+            PyObject *subject;
+            PyObject *res;
+            subject = stack_pointer[-1];
+            int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_SEQUENCE;
+            res = match ? Py_True : Py_False;
+            STACK_GROW(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case MATCH_KEYS: {
+            PyObject *keys;
+            PyObject *subject;
+            PyObject *values_or_none;
+            keys = stack_pointer[-1];
+            subject = stack_pointer[-2];
+            // On successful match, PUSH(values). Otherwise, PUSH(None).
+            values_or_none = _PyEval_MatchKeys(tstate, subject, keys);
+            if (values_or_none == NULL) goto error_tier_two;
+            STACK_GROW(1);
+            stack_pointer[-1] = values_or_none;
+            break;
+        }
+
+        case GET_ITER: {
+            PyObject *iterable;
+            PyObject *iter;
+            iterable = stack_pointer[-1];
+            /* before: [obj]; after [getiter(obj)] */
+            iter = PyObject_GetIter(iterable);
+            Py_DECREF(iterable);
+            if (iter == NULL) goto pop_1_error_tier_two;
+            stack_pointer[-1] = iter;
+            break;
+        }
+
+        case GET_YIELD_FROM_ITER: {
+            PyObject *iterable;
+            PyObject *iter;
+            iterable = stack_pointer[-1];
+            /* before: [obj]; after [getiter(obj)] */
+            if (PyCoro_CheckExact(iterable)) {
+                /* `iterable` is a coroutine */
+                if (!(_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_ITERABLE_COROUTINE))) {
+                    /* and it is used in a 'yield from' expression of a
+                       regular generator. */
+                    _PyErr_SetString(tstate, PyExc_TypeError,
+                                     "cannot 'yield from' a coroutine object "
+                                     "in a non-coroutine generator");
+                    GOTO_ERROR(error);
+                }
+                iter = iterable;
+            }
+            else if (PyGen_CheckExact(iterable)) {
+                iter = iterable;
+            }
+            else {
+                /* `iterable` is not a generator. */
+                iter = PyObject_GetIter(iterable);
+                if (iter == NULL) {
+                    GOTO_ERROR(error);
+                }
+                Py_DECREF(iterable);
+            }
+            stack_pointer[-1] = iter;
+            break;
+        }
+
+        case _FOR_ITER_TIER_TWO: {
+            PyObject *iter;
+            PyObject *next;
+            iter = stack_pointer[-1];
+            /* before: [iter]; after: [iter, iter()] *or* [] (and jump over END_FOR.) */
+            next = (*Py_TYPE(iter)->tp_iternext)(iter);
+            if (next == NULL) {
+                if (_PyErr_Occurred(tstate)) {
+                    if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
+                        GOTO_ERROR(error);
+                    }
+                    _PyErr_Clear(tstate);
+                }
+                /* iterator ended normally */
+                Py_DECREF(iter);
+                STACK_SHRINK(1);
+                /* The translator sets the deopt target just past END_FOR */
+                DEOPT_IF(true, _FOR_ITER_TIER_TWO);
+            }
+            // Common case: no jump, leave it to the code generator
+            STACK_GROW(1);
+            stack_pointer[-1] = next;
+            break;
+        }
+
+        case _ITER_CHECK_LIST: {
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            DEOPT_IF(Py_TYPE(iter) != &PyListIter_Type, _ITER_CHECK_LIST);
+            break;
+        }
+
+        case _GUARD_NOT_EXHAUSTED_LIST: {
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            _PyListIterObject *it = (_PyListIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyListIter_Type);
+            PyListObject *seq = it->it_seq;
+            DEOPT_IF(seq == NULL, _GUARD_NOT_EXHAUSTED_LIST);
+            DEOPT_IF(it->it_index >= PyList_GET_SIZE(seq), _GUARD_NOT_EXHAUSTED_LIST);
+            break;
+        }
+
+        case _ITER_NEXT_LIST: {
+            PyObject *iter;
+            PyObject *next;
+            iter = stack_pointer[-1];
+            _PyListIterObject *it = (_PyListIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyListIter_Type);
+            PyListObject *seq = it->it_seq;
+            assert(seq);
+            assert(it->it_index < PyList_GET_SIZE(seq));
+            next = Py_NewRef(PyList_GET_ITEM(seq, it->it_index++));
+            STACK_GROW(1);
+            stack_pointer[-1] = next;
+            break;
+        }
+
+        case _ITER_CHECK_TUPLE: {
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            DEOPT_IF(Py_TYPE(iter) != &PyTupleIter_Type, _ITER_CHECK_TUPLE);
+            break;
+        }
+
+        case _GUARD_NOT_EXHAUSTED_TUPLE: {
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyTupleIter_Type);
+            PyTupleObject *seq = it->it_seq;
+            DEOPT_IF(seq == NULL, _GUARD_NOT_EXHAUSTED_TUPLE);
+            DEOPT_IF(it->it_index >= PyTuple_GET_SIZE(seq), _GUARD_NOT_EXHAUSTED_TUPLE);
+            break;
+        }
+
+        case _ITER_NEXT_TUPLE: {
+            PyObject *iter;
+            PyObject *next;
+            iter = stack_pointer[-1];
+            _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
+            assert(Py_TYPE(iter) == &PyTupleIter_Type);
+            PyTupleObject *seq = it->it_seq;
+            assert(seq);
+            assert(it->it_index < PyTuple_GET_SIZE(seq));
+            next = Py_NewRef(PyTuple_GET_ITEM(seq, it->it_index++));
+            STACK_GROW(1);
+            stack_pointer[-1] = next;
+            break;
+        }
+
+        case _ITER_CHECK_RANGE: {
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+            DEOPT_IF(Py_TYPE(r) != &PyRangeIter_Type, _ITER_CHECK_RANGE);
+            break;
+        }
+
+        case _GUARD_NOT_EXHAUSTED_RANGE: {
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+            assert(Py_TYPE(r) == &PyRangeIter_Type);
+            DEOPT_IF(r->len <= 0, _GUARD_NOT_EXHAUSTED_RANGE);
+            break;
+        }
+
+        case _ITER_NEXT_RANGE: {
+            PyObject *iter;
+            PyObject *next;
+            iter = stack_pointer[-1];
+            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+            assert(Py_TYPE(r) == &PyRangeIter_Type);
+            assert(r->len > 0);
+            long value = r->start;
+            r->start = value + r->step;
+            r->len--;
+            next = PyLong_FromLong(value);
+            if (next == NULL) goto error_tier_two;
+            STACK_GROW(1);
+            stack_pointer[-1] = next;
+            break;
+        }
+
+        case BEFORE_ASYNC_WITH: {
+            PyObject *mgr;
+            PyObject *exit;
+            PyObject *res;
+            mgr = stack_pointer[-1];
+            PyObject *enter = _PyObject_LookupSpecial(mgr, &_Py_ID(__aenter__));
+            if (enter == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "asynchronous context manager protocol",
+                                  Py_TYPE(mgr)->tp_name);
+                }
+                GOTO_ERROR(error);
+            }
+            exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__aexit__));
+            if (exit == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "asynchronous context manager protocol "
+                                  "(missed __aexit__ method)",
+                                  Py_TYPE(mgr)->tp_name);
+                }
+                Py_DECREF(enter);
+                GOTO_ERROR(error);
+            }
+            Py_DECREF(mgr);
+            res = _PyObject_CallNoArgsTstate(tstate, enter);
+            Py_DECREF(enter);
+            if (res == NULL) {
+                Py_DECREF(exit);
+                if (true) goto pop_1_error_tier_two;
+            }
+            STACK_GROW(1);
+            stack_pointer[-2] = exit;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case BEFORE_WITH: {
+            PyObject *mgr;
+            PyObject *exit;
+            PyObject *res;
+            mgr = stack_pointer[-1];
+            /* pop the context manager, push its __exit__ and the
+             * value returned from calling its __enter__
+             */
+            PyObject *enter = _PyObject_LookupSpecial(mgr, &_Py_ID(__enter__));
+            if (enter == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "context manager protocol",
+                                  Py_TYPE(mgr)->tp_name);
+                }
+                GOTO_ERROR(error);
+            }
+            exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__exit__));
+            if (exit == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "context manager protocol "
+                                  "(missed __exit__ method)",
+                                  Py_TYPE(mgr)->tp_name);
+                }
+                Py_DECREF(enter);
+                GOTO_ERROR(error);
+            }
+            Py_DECREF(mgr);
+            res = _PyObject_CallNoArgsTstate(tstate, enter);
+            Py_DECREF(enter);
+            if (res == NULL) {
+                Py_DECREF(exit);
+                if (true) goto pop_1_error_tier_two;
+            }
+            STACK_GROW(1);
+            stack_pointer[-2] = exit;
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case WITH_EXCEPT_START: {
+            PyObject *val;
+            PyObject *lasti;
+            PyObject *exit_func;
+            PyObject *res;
+            val = stack_pointer[-1];
+            lasti = stack_pointer[-3];
+            exit_func = stack_pointer[-4];
+            /* At the top of the stack are 4 values:
+               - val: TOP = exc_info()
+               - unused: SECOND = previous exception
+               - lasti: THIRD = lasti of exception in exc_info()
+               - exit_func: FOURTH = the context.__exit__ bound method
+               We call FOURTH(type(TOP), TOP, GetTraceback(TOP)).
+               Then we push the __exit__ return value.
+            */
+            PyObject *exc, *tb;
+
+            assert(val && PyExceptionInstance_Check(val));
+            exc = PyExceptionInstance_Class(val);
+            tb = PyException_GetTraceback(val);
+            if (tb == NULL) {
+                tb = Py_None;
+            }
+            else {
+                Py_DECREF(tb);
+            }
+            assert(PyLong_Check(lasti));
+            (void)lasti; // Shut up compiler warning if asserts are off
+            PyObject *stack[4] = {NULL, exc, val, tb};
+            res = PyObject_Vectorcall(exit_func, stack + 1,
+                    3 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+            if (res == NULL) goto error_tier_two;
+            STACK_GROW(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case PUSH_EXC_INFO: {
+            PyObject *new_exc;
+            PyObject *prev_exc;
+            new_exc = stack_pointer[-1];
+            _PyErr_StackItem *exc_info = tstate->exc_info;
+            if (exc_info->exc_value != NULL) {
+                prev_exc = exc_info->exc_value;
+            }
+            else {
+                prev_exc = Py_None;
+            }
+            assert(PyExceptionInstance_Check(new_exc));
+            exc_info->exc_value = Py_NewRef(new_exc);
+            STACK_GROW(1);
+            stack_pointer[-2] = prev_exc;
+            stack_pointer[-1] = new_exc;
+            break;
+        }
+
+        case _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv), _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT);
+            break;
+        }
+
+        case _GUARD_KEYS_VERSION: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            uint32_t keys_version = (uint32_t)CURRENT_OPERAND();
+            PyTypeObject *owner_cls = Py_TYPE(owner);
+            PyHeapTypeObject *owner_heap_type = (PyHeapTypeObject *)owner_cls;
+            DEOPT_IF(owner_heap_type->ht_cached_keys->dk_version != keys_version, _GUARD_KEYS_VERSION);
+            break;
+        }
+
+        case _LOAD_ATTR_METHOD_WITH_VALUES: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self;
+            owner = stack_pointer[-1];
+            PyObject *descr = (PyObject *)CURRENT_OPERAND();
+            assert(oparg & 1);
+            /* Cached method object */
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            attr = Py_NewRef(descr);
+            assert(_PyType_HasFeature(Py_TYPE(attr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+            self = owner;
+            STACK_GROW(1);
+            stack_pointer[-2] = attr;
+            stack_pointer[-1] = self;
+            break;
+        }
+
+        case _LOAD_ATTR_METHOD_NO_DICT: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self;
+            owner = stack_pointer[-1];
+            PyObject *descr = (PyObject *)CURRENT_OPERAND();
+            assert(oparg & 1);
+            assert(Py_TYPE(owner)->tp_dictoffset == 0);
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+            attr = Py_NewRef(descr);
+            self = owner;
+            STACK_GROW(1);
+            stack_pointer[-2] = attr;
+            stack_pointer[-1] = self;
+            break;
+        }
+
+        case _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            owner = stack_pointer[-1];
+            PyObject *descr = (PyObject *)CURRENT_OPERAND();
+            assert((oparg & 1) == 0);
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            Py_DECREF(owner);
+            attr = Py_NewRef(descr);
+            stack_pointer[-1] = attr;
+            break;
+        }
+
+        case _LOAD_ATTR_NONDESCRIPTOR_NO_DICT: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            owner = stack_pointer[-1];
+            PyObject *descr = (PyObject *)CURRENT_OPERAND();
+            assert((oparg & 1) == 0);
+            assert(Py_TYPE(owner)->tp_dictoffset == 0);
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            Py_DECREF(owner);
+            attr = Py_NewRef(descr);
+            stack_pointer[-1] = attr;
+            break;
+        }
+
+        case _CHECK_ATTR_METHOD_LAZY_DICT: {
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            Py_ssize_t dictoffset = Py_TYPE(owner)->tp_dictoffset;
+            assert(dictoffset > 0);
+            PyObject *dict = *(PyObject **)((char *)owner + dictoffset);
+            /* This object has a __dict__, just not yet created */
+            DEOPT_IF(dict != NULL, _CHECK_ATTR_METHOD_LAZY_DICT);
+            break;
+        }
+
+        case _LOAD_ATTR_METHOD_LAZY_DICT: {
+            oparg = CURRENT_OPARG();
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self;
+            owner = stack_pointer[-1];
+            PyObject *descr = (PyObject *)CURRENT_OPERAND();
+            assert(oparg & 1);
+            STAT_INC(LOAD_ATTR, hit);
+            assert(descr != NULL);
+            assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+            attr = Py_NewRef(descr);
+            self = owner;
+            STACK_GROW(1);
+            stack_pointer[-2] = attr;
+            stack_pointer[-1] = self;
+            break;
+        }
+
+        case _CHECK_CALL_BOUND_METHOD_EXACT_ARGS: {
+            oparg = CURRENT_OPARG();
+            PyObject *null;
+            PyObject *callable;
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            DEOPT_IF(null != NULL, _CHECK_CALL_BOUND_METHOD_EXACT_ARGS);
+            DEOPT_IF(Py_TYPE(callable) != &PyMethod_Type, _CHECK_CALL_BOUND_METHOD_EXACT_ARGS);
+            break;
+        }
+
+        case _INIT_CALL_BOUND_METHOD_EXACT_ARGS: {
+            oparg = CURRENT_OPARG();
+            PyObject *callable;
+            PyObject *func;
+            PyObject *self;
+            callable = stack_pointer[-2 - oparg];
+            STAT_INC(CALL, hit);
+            self = Py_NewRef(((PyMethodObject *)callable)->im_self);
+            stack_pointer[-1 - oparg] = self;  // Patch stack as it is used by _INIT_CALL_PY_EXACT_ARGS
+            func = Py_NewRef(((PyMethodObject *)callable)->im_func);
+            stack_pointer[-2 - oparg] = func;  // This is used by CALL, upon deoptimization
+            Py_DECREF(callable);
+            stack_pointer[-2 - oparg] = func;
+            stack_pointer[-1 - oparg] = self;
+            break;
+        }
+
+        case _CHECK_PEP_523: {
+            DEOPT_IF(tstate->interp->eval_frame, _CHECK_PEP_523);
+            break;
+        }
+
+        case _CHECK_FUNCTION_EXACT_ARGS: {
+            oparg = CURRENT_OPARG();
+            PyObject *self_or_null;
+            PyObject *callable;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            uint32_t func_version = (uint32_t)CURRENT_OPERAND();
+            DEOPT_IF(!PyFunction_Check(callable), _CHECK_FUNCTION_EXACT_ARGS);
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            DEOPT_IF(func->func_version != func_version, _CHECK_FUNCTION_EXACT_ARGS);
+            PyCodeObject *code = (PyCodeObject *)func->func_code;
+            DEOPT_IF(code->co_argcount != oparg + (self_or_null != NULL), _CHECK_FUNCTION_EXACT_ARGS);
+            break;
+        }
+
+        case _CHECK_STACK_SPACE: {
+            oparg = CURRENT_OPARG();
+            PyObject *callable;
+            callable = stack_pointer[-2 - oparg];
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            PyCodeObject *code = (PyCodeObject *)func->func_code;
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), _CHECK_STACK_SPACE);
+            DEOPT_IF(tstate->py_recursion_remaining <= 1, _CHECK_STACK_SPACE);
+            break;
+        }
+
+        case _INIT_CALL_PY_EXACT_ARGS: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            _PyInterpreterFrame *new_frame;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int argcount = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                argcount++;
+            }
+            STAT_INC(CALL, hit);
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            new_frame = _PyFrame_PushUnchecked(tstate, func, argcount);
+            for (int i = 0; i < argcount; i++) {
+                new_frame->localsplus[i] = args[i];
+            }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = (PyObject *)new_frame;
+            break;
+        }
+
+        case _PUSH_FRAME: {
+            _PyInterpreterFrame *new_frame;
+            new_frame = (_PyInterpreterFrame *)stack_pointer[-1];
+            STACK_SHRINK(1);
+            // Write it out explicitly because it's subtly different.
+            // Eventually this should be the only occurrence of this code.
+            assert(tstate->interp->eval_frame == NULL);
+            STORE_SP();
+            new_frame->previous = frame;
+            CALL_STAT_INC(inlined_py_calls);
+            frame = tstate->current_frame = new_frame;
+            tstate->py_recursion_remaining--;
+            LOAD_SP();
+            LOAD_IP(0);
+#if LLTRACE && TIER_ONE
+            lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+            if (lltrace < 0) {
+                goto exit_unwind;
+            }
+#endif
+            break;
+        }
+
+        case CALL_TYPE_1: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            DEOPT_IF(null != NULL, CALL);
+            PyObject *obj = args[0];
+            DEOPT_IF(callable != (PyObject *)&PyType_Type, CALL);
+            STAT_INC(CALL, hit);
+            res = Py_NewRef(Py_TYPE(obj));
+            Py_DECREF(obj);
+            Py_DECREF(&PyType_Type);  // I.e., callable
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case CALL_STR_1: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            DEOPT_IF(null != NULL, CALL);
+            DEOPT_IF(callable != (PyObject *)&PyUnicode_Type, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *arg = args[0];
+            res = PyObject_Str(arg);
+            Py_DECREF(arg);
+            Py_DECREF(&PyUnicode_Type);  // I.e., callable
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_TUPLE_1: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            DEOPT_IF(null != NULL, CALL);
+            DEOPT_IF(callable != (PyObject *)&PyTuple_Type, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *arg = args[0];
+            res = PySequence_Tuple(arg);
+            Py_DECREF(arg);
+            Py_DECREF(&PyTuple_Type);  // I.e., tuple
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case EXIT_INIT_CHECK: {
+            PyObject *should_be_none;
+            should_be_none = stack_pointer[-1];
+            assert(STACK_LEVEL() == 2);
+            if (should_be_none != Py_None) {
+                PyErr_Format(PyExc_TypeError,
+                    "__init__() should return None, not '%.200s'",
+                    Py_TYPE(should_be_none)->tp_name);
+                GOTO_ERROR(error);
+            }
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case CALL_BUILTIN_CLASS: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(!PyType_Check(callable), CALL);
+            PyTypeObject *tp = (PyTypeObject *)callable;
+            DEOPT_IF(tp->tp_vectorcall == NULL, CALL);
+            STAT_INC(CALL, hit);
+            res = tp->tp_vectorcall((PyObject *)tp, args, total_args, NULL);
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(tp);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_BUILTIN_O: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* Builtin METH_O functions */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 1, CALL);
+            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_O, CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
+            // This is slower but CPython promises to check all non-vectorcall
+            // function calls.
+            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
+                GOTO_ERROR(error);
+            }
+            PyObject *arg = args[0];
+            res = _PyCFunction_TrampolineCall(cfunc, PyCFunction_GET_SELF(callable), arg);
+            _Py_LeaveRecursiveCallTstate(tstate);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+
+            Py_DECREF(arg);
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_BUILTIN_FAST: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* Builtin METH_FASTCALL functions, without keywords */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_FASTCALL, CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
+            /* res = func(self, args, nargs) */
+            res = ((_PyCFunctionFast)(void(*)(void))cfunc)(
+                PyCFunction_GET_SELF(callable),
+                args,
+                total_args);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+                /* Not deopting because this doesn't mean our optimization was
+                   wrong. `res` can be NULL for valid reasons. Eg. getattr(x,
+                   'invalid'). In those cases an exception is set, so we must
+                   handle it.
+                */
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_BUILTIN_FAST_WITH_KEYWORDS: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* Builtin METH_FASTCALL | METH_KEYWORDS functions */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != (METH_FASTCALL | METH_KEYWORDS), CALL);
+            STAT_INC(CALL, hit);
+            /* res = func(self, args, nargs, kwnames) */
+            _PyCFunctionFastWithKeywords cfunc =
+                (_PyCFunctionFastWithKeywords)(void(*)(void))
+                PyCFunction_GET_FUNCTION(callable);
+            res = cfunc(PyCFunction_GET_SELF(callable), args, total_args, NULL);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_LEN: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* len(o) */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 1, CALL);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.len, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *arg = args[0];
+            Py_ssize_t len_i = PyObject_Length(arg);
+            if (len_i < 0) {
+                GOTO_ERROR(error);
+            }
+            res = PyLong_FromSsize_t(len_i);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+
+            Py_DECREF(callable);
+            Py_DECREF(arg);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case CALL_ISINSTANCE: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* isinstance(o, o2) */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 2, CALL);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.isinstance, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *cls = args[1];
+            PyObject *inst = args[0];
+            int retval = PyObject_IsInstance(inst, cls);
+            if (retval < 0) {
+                GOTO_ERROR(error);
+            }
+            res = PyBool_FromLong(retval);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+
+            Py_DECREF(inst);
+            Py_DECREF(cls);
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_O: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(total_args != 2, CALL);
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != METH_O, CALL);
+            PyObject *arg = args[1];
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type), CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = meth->ml_meth;
+            // This is slower but CPython promises to check all non-vectorcall
+            // function calls.
+            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
+                GOTO_ERROR(error);
+            }
+            res = _PyCFunction_TrampolineCall(cfunc, self, arg);
+            _Py_LeaveRecursiveCallTstate(tstate);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(self);
+            Py_DECREF(arg);
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != (METH_FASTCALL|METH_KEYWORDS), CALL);
+            PyTypeObject *d_type = method->d_common.d_type;
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, d_type), CALL);
+            STAT_INC(CALL, hit);
+            int nargs = total_args - 1;
+            _PyCFunctionFastWithKeywords cfunc =
+                (_PyCFunctionFastWithKeywords)(void(*)(void))meth->ml_meth;
+            res = cfunc(self, args + 1, nargs, NULL);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_NOARGS: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 0 || oparg == 1);
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 1, CALL);
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type), CALL);
+            DEOPT_IF(meth->ml_flags != METH_NOARGS, CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = meth->ml_meth;
+            // This is slower but CPython promises to check all non-vectorcall
+            // function calls.
+            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
+                GOTO_ERROR(error);
+            }
+            res = _PyCFunction_TrampolineCall(cfunc, self, NULL);
+            _Py_LeaveRecursiveCallTstate(tstate);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(self);
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case CALL_METHOD_DESCRIPTOR_FAST: {
+            oparg = CURRENT_OPARG();
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = stack_pointer - oparg;
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            /* Builtin METH_FASTCALL methods, without keywords */
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != METH_FASTCALL, CALL);
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type), CALL);
+            STAT_INC(CALL, hit);
+            _PyCFunctionFast cfunc =
+                (_PyCFunctionFast)(void(*)(void))meth->ml_meth;
+            int nargs = total_args - 1;
+            res = cfunc(self, args + 1, nargs);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            /* Clear the stack of the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error_tier_two; }
+            STACK_SHRINK(oparg);
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case MAKE_FUNCTION: {
+            PyObject *codeobj;
+            PyObject *func;
+            codeobj = stack_pointer[-1];
+
+            PyFunctionObject *func_obj = (PyFunctionObject *)
+                PyFunction_New(codeobj, GLOBALS());
+
+            Py_DECREF(codeobj);
+            if (func_obj == NULL) {
+                GOTO_ERROR(error);
+            }
+
+            _PyFunction_SetVersion(
+                func_obj, ((PyCodeObject *)codeobj)->co_version);
+            func = (PyObject *)func_obj;
+            stack_pointer[-1] = func;
+            break;
+        }
+
+        case SET_FUNCTION_ATTRIBUTE: {
+            oparg = CURRENT_OPARG();
+            PyObject *func;
+            PyObject *attr;
+            func = stack_pointer[-1];
+            attr = stack_pointer[-2];
+            assert(PyFunction_Check(func));
+            PyFunctionObject *func_obj = (PyFunctionObject *)func;
+            switch(oparg) {
+                case MAKE_FUNCTION_CLOSURE:
+                    assert(func_obj->func_closure == NULL);
+                    func_obj->func_closure = attr;
+                    break;
+                case MAKE_FUNCTION_ANNOTATIONS:
+                    assert(func_obj->func_annotations == NULL);
+                    func_obj->func_annotations = attr;
+                    break;
+                case MAKE_FUNCTION_KWDEFAULTS:
+                    assert(PyDict_CheckExact(attr));
+                    assert(func_obj->func_kwdefaults == NULL);
+                    func_obj->func_kwdefaults = attr;
+                    break;
+                case MAKE_FUNCTION_DEFAULTS:
+                    assert(PyTuple_CheckExact(attr));
+                    assert(func_obj->func_defaults == NULL);
+                    func_obj->func_defaults = attr;
+                    break;
+                default:
+                    Py_UNREACHABLE();
+            }
+            STACK_SHRINK(1);
+            stack_pointer[-1] = func;
+            break;
+        }
+
+        case BUILD_SLICE: {
+            oparg = CURRENT_OPARG();
+            PyObject *step = NULL;
+            PyObject *stop;
+            PyObject *start;
+            PyObject *slice;
+            if (oparg == 3) { step = stack_pointer[-(oparg == 3 ? 1 : 0)]; }
+            stop = stack_pointer[-1 - (oparg == 3 ? 1 : 0)];
+            start = stack_pointer[-2 - (oparg == 3 ? 1 : 0)];
+            slice = PySlice_New(start, stop, step);
+            Py_DECREF(start);
+            Py_DECREF(stop);
+            Py_XDECREF(step);
+            if (slice == NULL) { STACK_SHRINK(((oparg == 3) ? 1 : 0)); goto pop_2_error_tier_two; }
+            STACK_SHRINK(((oparg == 3) ? 1 : 0));
+            STACK_SHRINK(1);
+            stack_pointer[-1] = slice;
+            break;
+        }
+
+        case CONVERT_VALUE: {
+            oparg = CURRENT_OPARG();
+            PyObject *value;
+            PyObject *result;
+            value = stack_pointer[-1];
+            convertion_func_ptr  conv_fn;
+            assert(oparg >= FVC_STR && oparg <= FVC_ASCII);
+            conv_fn = CONVERSION_FUNCTIONS[oparg];
+            result = conv_fn(value);
+            Py_DECREF(value);
+            if (result == NULL) goto pop_1_error_tier_two;
+            stack_pointer[-1] = result;
+            break;
+        }
+
+        case FORMAT_SIMPLE: {
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            /* If value is a unicode object, then we know the result
+             * of format(value) is value itself. */
+            if (!PyUnicode_CheckExact(value)) {
+                res = PyObject_Format(value, NULL);
+                Py_DECREF(value);
+                if (res == NULL) goto pop_1_error_tier_two;
+            }
+            else {
+                res = value;
+            }
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case FORMAT_WITH_SPEC: {
+            PyObject *fmt_spec;
+            PyObject *value;
+            PyObject *res;
+            fmt_spec = stack_pointer[-1];
+            value = stack_pointer[-2];
+            res = PyObject_Format(value, fmt_spec);
+            Py_DECREF(value);
+            Py_DECREF(fmt_spec);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case COPY: {
+            oparg = CURRENT_OPARG();
+            PyObject *bottom;
+            PyObject *top;
+            bottom = stack_pointer[-1 - (oparg-1)];
+            assert(oparg > 0);
+            top = Py_NewRef(bottom);
+            STACK_GROW(1);
+            stack_pointer[-1] = top;
+            break;
+        }
+
+        case _BINARY_OP: {
+            oparg = CURRENT_OPARG();
+            PyObject *rhs;
+            PyObject *lhs;
+            PyObject *res;
+            rhs = stack_pointer[-1];
+            lhs = stack_pointer[-2];
+            assert(_PyEval_BinaryOps[oparg]);
+            res = _PyEval_BinaryOps[oparg](lhs, rhs);
+            Py_DECREF(lhs);
+            Py_DECREF(rhs);
+            if (res == NULL) goto pop_2_error_tier_two;
+            STACK_SHRINK(1);
+            stack_pointer[-1] = res;
+            break;
+        }
+
+        case SWAP: {
+            oparg = CURRENT_OPARG();
+            PyObject *top;
+            PyObject *bottom;
+            top = stack_pointer[-1];
+            bottom = stack_pointer[-2 - (oparg-2)];
+            assert(oparg >= 2);
+            stack_pointer[-2 - (oparg-2)] = top;
+            stack_pointer[-1] = bottom;
+            break;
+        }
+
+        case _GUARD_IS_TRUE_POP: {
+            PyObject *flag;
+            flag = stack_pointer[-1];
+            DEOPT_IF(Py_IsFalse(flag), _GUARD_IS_TRUE_POP);
+            assert(Py_IsTrue(flag));
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _GUARD_IS_FALSE_POP: {
+            PyObject *flag;
+            flag = stack_pointer[-1];
+            DEOPT_IF(Py_IsTrue(flag), _GUARD_IS_FALSE_POP);
+            assert(Py_IsFalse(flag));
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _GUARD_IS_NONE_POP: {
+            PyObject *val;
+            val = stack_pointer[-1];
+            DEOPT_IF(!Py_IsNone(val), _GUARD_IS_NONE_POP);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _GUARD_IS_NOT_NONE_POP: {
+            PyObject *val;
+            val = stack_pointer[-1];
+            DEOPT_IF(Py_IsNone(val), _GUARD_IS_NOT_NONE_POP);
+            Py_DECREF(val);
+            STACK_SHRINK(1);
+            break;
+        }
+
+        case _JUMP_TO_TOP: {
+            next_uop = current_executor->trace;
+            CHECK_EVAL_BREAKER();
+            break;
+        }
+
+        case _SET_IP: {
+            oparg = CURRENT_OPARG();
+            TIER_TWO_ONLY
+            // TODO: Put the code pointer in `operand` to avoid indirection via `frame`
+            frame->instr_ptr = _PyCode_CODE(_PyFrame_GetCode(frame)) + oparg;
+            break;
+        }
+
+        case _SAVE_RETURN_OFFSET: {
+            oparg = CURRENT_OPARG();
+            #if TIER_ONE
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            #endif
+            #if TIER_TWO
+            frame->return_offset = oparg;
+            #endif
+            break;
+        }
+
+        case _EXIT_TRACE: {
+            TIER_TWO_ONLY
+            GOTO_TIER_ONE();
+            break;
+        }
+
+        case _INSERT: {
+            oparg = CURRENT_OPARG();
+            PyObject *top;
+            top = stack_pointer[-1];
+            // Inserts TOS at position specified by oparg;
+            memmove(&stack_pointer[-1 - oparg], &stack_pointer[-oparg], oparg * sizeof(stack_pointer[0]));
+            stack_pointer[-1 - oparg] = top;
+            break;
+        }
+
+        case _CHECK_VALIDITY: {
+            TIER_TWO_ONLY
+            DEOPT_IF(!current_executor->base.vm_data.valid, _CHECK_VALIDITY);
+            break;
+        }
+
+#undef TIER_TWO
diff --git a/Python/fileutils.c b/Python/fileutils.c
index 969b7163b5ac18..9d12bc89c95436 100644
--- a/Python/fileutils.c
+++ b/Python/fileutils.c
@@ -2,8 +2,11 @@
 #include "pycore_fileutils.h"     // fileutils definitions
 #include "pycore_runtime.h"       // _PyRuntime
 #include "osdefs.h"               // SEP
-#include <locale.h>
+
 #include <stdlib.h>               // mbstowcs()
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // getcwd()
+#endif
 
 #ifdef MS_WINDOWS
 #  include <malloc.h>
@@ -19,7 +22,7 @@ extern int winerror_to_errno(int);
 #endif
 
 #ifdef HAVE_LANGINFO_H
-#include <langinfo.h>
+#  include <langinfo.h>           // nl_langinfo(CODESET)
 #endif
 
 #ifdef HAVE_SYS_IOCTL_H
@@ -27,12 +30,12 @@ extern int winerror_to_errno(int);
 #endif
 
 #ifdef HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION
-#include <iconv.h>
+#  include <iconv.h>              // iconv_open()
 #endif
 
 #ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif /* HAVE_FCNTL_H */
+#  include <fcntl.h>              // fcntl(F_GETFD)
+#endif
 
 #ifdef O_CLOEXEC
 /* Does open() support the O_CLOEXEC flag? Possible values:
@@ -105,14 +108,14 @@ _Py_device_encoding(int fd)
 #else
     if (_PyRuntime.preconfig.utf8_mode) {
         _Py_DECLARE_STR(utf_8, "utf-8");
-        return Py_NewRef(&_Py_STR(utf_8));
+        return &_Py_STR(utf_8);
     }
     return _Py_GetLocaleEncodingObject();
 #endif
 }
 
 
-static size_t
+static int
 is_valid_wide_char(wchar_t ch)
 {
 #ifdef HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION
@@ -1132,7 +1135,8 @@ _Py_attribute_data_to_stat(BY_HANDLE_FILE_INFORMATION *info, ULONG reparse_tag,
         file_id.id = id_info->FileId;
         result->st_ino = file_id.st_ino;
         result->st_ino_high = file_id.st_ino_high;
-    } else {
+    }
+    if (!result->st_ino && !result->st_ino_high) {
         /* should only occur for DirEntry_from_find_data, in which case the
            index is likely to be zero anyway. */
         result->st_ino = (((uint64_t)info->nFileIndexHigh) << 32) + info->nFileIndexLow;
@@ -1235,6 +1239,7 @@ _Py_fstat_noraise(int fd, struct _Py_stat_struct *status)
     BY_HANDLE_FILE_INFORMATION info;
     FILE_BASIC_INFO basicInfo;
     FILE_ID_INFO idInfo;
+    FILE_ID_INFO *pIdInfo = &idInfo;
     HANDLE h;
     int type;
 
@@ -1267,15 +1272,19 @@ _Py_fstat_noraise(int fd, struct _Py_stat_struct *status)
     }
 
     if (!GetFileInformationByHandle(h, &info) ||
-        !GetFileInformationByHandleEx(h, FileBasicInfo, &basicInfo, sizeof(basicInfo)) ||
-        !GetFileInformationByHandleEx(h, FileIdInfo, &idInfo, sizeof(idInfo))) {
+        !GetFileInformationByHandleEx(h, FileBasicInfo, &basicInfo, sizeof(basicInfo))) {
         /* The Win32 error is already set, but we also set errno for
            callers who expect it */
         errno = winerror_to_errno(GetLastError());
         return -1;
     }
 
-    _Py_attribute_data_to_stat(&info, 0, &basicInfo, &idInfo, status);
+    if (!GetFileInformationByHandleEx(h, FileIdInfo, &idInfo, sizeof(idInfo))) {
+        /* Failed to get FileIdInfo, so do not pass it along */
+        pIdInfo = NULL;
+    }
+
+    _Py_attribute_data_to_stat(&info, 0, &basicInfo, pIdInfo, status);
     return 0;
 #else
     return fstat(fd, status);
@@ -1789,6 +1798,7 @@ _Py_fopen_obj(PyObject *path, const char *mode)
         Py_END_ALLOW_THREADS
     } while (f == NULL
              && errno == EINTR && !(async_err = PyErr_CheckSignals()));
+    int saved_errno = errno;
     PyMem_Free(wpath);
 #else
     PyObject *bytes;
@@ -1811,13 +1821,14 @@ _Py_fopen_obj(PyObject *path, const char *mode)
         Py_END_ALLOW_THREADS
     } while (f == NULL
              && errno == EINTR && !(async_err = PyErr_CheckSignals()));
-
+    int saved_errno = errno;
     Py_DECREF(bytes);
 #endif
     if (async_err)
         return NULL;
 
     if (f == NULL) {
+        errno = saved_errno;
         PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, path);
         return NULL;
     }
@@ -2376,12 +2387,14 @@ _Py_find_basename(const wchar_t *filename)
    path, which will be within the original buffer. Guaranteed to not
    make the path longer, and will not fail. 'size' is the length of
    the path, if known. If -1, the first null character will be assumed
-   to be the end of the path. */
+   to be the end of the path. 'normsize' will be set to contain the
+   length of the resulting normalized path. */
 wchar_t *
-_Py_normpath(wchar_t *path, Py_ssize_t size)
+_Py_normpath_and_size(wchar_t *path, Py_ssize_t size, Py_ssize_t *normsize)
 {
     assert(path != NULL);
-    if (!path[0] || size == 0) {
+    if ((size < 0 && !path[0]) || size == 0) {
+        *normsize = 0;
         return path;
     }
     wchar_t *pEnd = size >= 0 ? &path[size] : NULL;
@@ -2430,11 +2443,7 @@ _Py_normpath(wchar_t *path, Py_ssize_t size)
                 *p2++ = lastC = *p1;
             }
         }
-        if (sepCount) {
-            minP2 = p2;      // Invalid path
-        } else {
-            minP2 = p2 - 1;  // Absolute path has SEP at minP2
-        }
+        minP2 = p2 - 1;
     }
 #else
     // Skip past two leading SEPs
@@ -2494,13 +2503,28 @@ _Py_normpath(wchar_t *path, Py_ssize_t size)
         while (--p2 != minP2 && *p2 == SEP) {
             *p2 = L'\0';
         }
+    } else {
+        --p2;
     }
+    *normsize = p2 - path + 1;
 #undef SEP_OR_END
 #undef IS_SEP
 #undef IS_END
     return path;
 }
 
+/* In-place path normalisation. Returns the start of the normalized
+   path, which will be within the original buffer. Guaranteed to not
+   make the path longer, and will not fail. 'size' is the length of
+   the path, if known. If -1, the first null character will be assumed
+   to be the end of the path. */
+wchar_t *
+_Py_normpath(wchar_t *path, Py_ssize_t size)
+{
+    Py_ssize_t norm_length;
+    return _Py_normpath_and_size(path, size, &norm_length);
+}
+
 
 /* Get the current directory. buflen is the buffer size in wide characters
    including the null character. Decode the path from the locale encoding.
@@ -2919,3 +2943,27 @@ _Py_closerange(int first, int last)
 #endif /* USE_FDWALK */
     _Py_END_SUPPRESS_IPH
 }
+
+
+#ifndef MS_WINDOWS
+// Ticks per second used by clock() and times() functions.
+// See os.times() and time.process_time() implementations.
+int
+_Py_GetTicksPerSecond(long *ticks_per_second)
+{
+#if defined(HAVE_SYSCONF) && defined(_SC_CLK_TCK)
+    long value = sysconf(_SC_CLK_TCK);
+    if (value < 1) {
+        return -1;
+    }
+    *ticks_per_second = value;
+#elif defined(HZ)
+    assert(HZ >= 1);
+    *ticks_per_second = HZ;
+#else
+    // Magic fallback value; may be bogus
+    *ticks_per_second = 60;
+#endif
+    return 0;
+}
+#endif
diff --git a/Python/flowgraph.c b/Python/flowgraph.c
index 7f790b79d2844f..fe632082d5a66c 100644
--- a/Python/flowgraph.c
+++ b/Python/flowgraph.c
@@ -7,9 +7,7 @@
 #include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 
 #include "pycore_opcode_utils.h"
-#define NEED_OPCODE_METADATA
-#include "opcode_metadata.h"      // _PyOpcode_opcode_metadata, _PyOpcode_num_popped/pushed
-#undef NEED_OPCODE_METADATA
+#include "pycore_opcode_metadata.h" // OPCODE_HAS_ARG, etc
 
 
 #undef SUCCESS
@@ -26,33 +24,94 @@
 
 typedef _PyCompilerSrcLocation location;
 typedef _PyCfgJumpTargetLabel jump_target_label;
-typedef _PyCfgBasicblock basicblock;
-typedef _PyCfgBuilder cfg_builder;
-typedef _PyCfgInstruction cfg_instr;
+
+typedef struct _PyCfgInstruction {
+    int i_opcode;
+    int i_oparg;
+    _PyCompilerSrcLocation i_loc;
+    struct _PyCfgBasicblock *i_target; /* target block (if jump instruction) */
+    struct _PyCfgBasicblock *i_except; /* target block when exception is raised */
+} cfg_instr;
+
+typedef struct _PyCfgBasicblock {
+    /* Each basicblock in a compilation unit is linked via b_list in the
+       reverse order that the block are allocated.  b_list points to the next
+       block in this list, not to be confused with b_next, which is next by
+       control flow. */
+    struct _PyCfgBasicblock *b_list;
+    /* The label of this block if it is a jump target, -1 otherwise */
+    _PyCfgJumpTargetLabel b_label;
+    /* Exception stack at start of block, used by assembler to create the exception handling table */
+    struct _PyCfgExceptStack *b_exceptstack;
+    /* pointer to an array of instructions, initially NULL */
+    cfg_instr *b_instr;
+    /* If b_next is non-NULL, it is a pointer to the next
+       block reached by normal control flow. */
+    struct _PyCfgBasicblock *b_next;
+    /* number of instructions used */
+    int b_iused;
+    /* length of instruction array (b_instr) */
+    int b_ialloc;
+    /* Used by add_checks_for_loads_of_unknown_variables */
+    uint64_t b_unsafe_locals_mask;
+    /* Number of predecessors that a block has. */
+    int b_predecessors;
+    /* depth of stack upon entry of block, computed by stackdepth() */
+    int b_startdepth;
+    /* Basic block is an exception handler that preserves lasti */
+    unsigned b_preserve_lasti : 1;
+    /* Used by compiler passes to mark whether they have visited a basic block. */
+    unsigned b_visited : 1;
+    /* b_except_handler is used by the cold-detection algorithm to mark exception targets */
+    unsigned b_except_handler : 1;
+    /* b_cold is true if this block is not perf critical (like an exception handler) */
+    unsigned b_cold : 1;
+    /* b_warm is used by the cold-detection algorithm to mark blocks which are definitely not cold */
+    unsigned b_warm : 1;
+} basicblock;
+
+
+struct _PyCfgBuilder {
+    /* The entryblock, at which control flow begins. All blocks of the
+       CFG are reachable through the b_next links */
+    struct _PyCfgBasicblock *g_entryblock;
+    /* Pointer to the most recently allocated block.  By following
+       b_list links, you can reach all allocated blocks. */
+    struct _PyCfgBasicblock *g_block_list;
+    /* pointer to the block currently being constructed */
+    struct _PyCfgBasicblock *g_curblock;
+    /* label for the next instruction to be placed */
+    _PyCfgJumpTargetLabel g_current_label;
+};
+
+typedef struct _PyCfgBuilder cfg_builder;
 
 static const jump_target_label NO_LABEL = {-1};
 
 #define SAME_LABEL(L1, L2) ((L1).id == (L2).id)
 #define IS_LABEL(L) (!SAME_LABEL((L), (NO_LABEL)))
 
+#define LOCATION(LNO, END_LNO, COL, END_COL) \
+    ((const _PyCompilerSrcLocation){(LNO), (END_LNO), (COL), (END_COL)})
 
 static inline int
 is_block_push(cfg_instr *i)
 {
+    assert(OPCODE_HAS_ARG(i->i_opcode) || !IS_BLOCK_PUSH_OPCODE(i->i_opcode));
     return IS_BLOCK_PUSH_OPCODE(i->i_opcode);
 }
 
 static inline int
 is_jump(cfg_instr *i)
 {
-    return IS_JUMP_OPCODE(i->i_opcode);
+    return OPCODE_HAS_JUMP(i->i_opcode);
 }
 
 /* One arg*/
 #define INSTR_SET_OP1(I, OP, ARG) \
     do { \
-        assert(HAS_ARG(OP)); \
-        _PyCfgInstruction *_instr__ptr_ = (I); \
+        assert(OPCODE_HAS_ARG(OP)); \
+        cfg_instr *_instr__ptr_ = (I); \
         _instr__ptr_->i_opcode = (OP); \
         _instr__ptr_->i_oparg = (ARG); \
     } while (0);
@@ -60,8 +119,8 @@ is_jump(cfg_instr *i)
 /* No args*/
 #define INSTR_SET_OP0(I, OP) \
     do { \
-        assert(!HAS_ARG(OP)); \
-        _PyCfgInstruction *_instr__ptr_ = (I); \
+        assert(!OPCODE_HAS_ARG(OP)); \
+        cfg_instr *_instr__ptr_ = (I); \
         _instr__ptr_->i_opcode = (OP); \
         _instr__ptr_->i_oparg = 0; \
     } while (0);
@@ -110,7 +169,7 @@ basicblock_addop(basicblock *b, int opcode, int oparg, location loc)
 {
     assert(IS_WITHIN_OPCODE_RANGE(opcode));
     assert(!IS_ASSEMBLER_OPCODE(opcode));
-    assert(HAS_ARG(opcode) || HAS_TARGET(opcode) || oparg == 0);
+    assert(OPCODE_HAS_ARG(opcode) || HAS_TARGET(opcode) || oparg == 0);
     assert(0 <= oparg && oparg < (1 << 30));
 
     int off = basicblock_next_instr(b);
@@ -139,6 +198,27 @@ basicblock_append_instructions(basicblock *target, basicblock *source)
     return SUCCESS;
 }
 
+static cfg_instr *
+basicblock_last_instr(const basicblock *b) {
+    assert(b->b_iused >= 0);
+    if (b->b_iused > 0) {
+        assert(b->b_instr != NULL);
+        return &b->b_instr[b->b_iused - 1];
+    }
+    return NULL;
+}
+
+static inline int
+basicblock_nofallthrough(const basicblock *b) {
+    cfg_instr *last = basicblock_last_instr(b);
+    return (last &&
+            (IS_SCOPE_EXIT_OPCODE(last->i_opcode) ||
+             IS_UNCONDITIONAL_JUMP_OPCODE(last->i_opcode)));
+}
+
+#define BB_NO_FALLTHROUGH(B) (basicblock_nofallthrough(B))
+#define BB_HAS_FALLTHROUGH(B) (!basicblock_nofallthrough(B))
+
 static basicblock *
 copy_basicblock(cfg_builder *g, basicblock *block)
 {
@@ -156,8 +236,8 @@ copy_basicblock(cfg_builder *g, basicblock *block)
     return result;
 }
 
-int
-_PyBasicblock_InsertInstruction(basicblock *block, int pos, cfg_instr *instr) {
+static int
+basicblock_insert_instruction(basicblock *block, int pos, cfg_instr *instr) {
     RETURN_IF_ERROR(basicblock_next_instr(block));
     for (int i = block->b_iused - 1; i > pos; i--) {
         block->b_instr[i] = block->b_instr[i-1];
@@ -166,22 +246,6 @@ _PyBasicblock_InsertInstruction(basicblock *block, int pos, cfg_instr *instr) {
     return SUCCESS;
 }
 
-static int
-instr_size(cfg_instr *instruction)
-{
-    return _PyCompile_InstrSize(instruction->i_opcode, instruction->i_oparg);
-}
-
-static int
-blocksize(basicblock *b)
-{
-    int size = 0;
-    for (int i = 0; i < b->b_iused; i++) {
-        size += instr_size(&b->b_instr[i]);
-    }
-    return size;
-}
-
 /* For debugging purposes only */
 #if 0
 static void
@@ -192,19 +256,19 @@ dump_instr(cfg_instr *i)
     char arg[128];
 
     *arg = '\0';
-    if (HAS_ARG(i->i_opcode)) {
+    if (OPCODE_HAS_ARG(i->i_opcode)) {
         sprintf(arg, "arg: %d ", i->i_oparg);
     }
     if (HAS_TARGET(i->i_opcode)) {
         sprintf(arg, "target: %p [%d] ", i->i_target, i->i_oparg);
     }
-    fprintf(stderr, "line: %d, opcode: %d %s%s\n",
-                    i->i_loc.lineno, i->i_opcode, arg, jump);
+    fprintf(stderr, "line: %d, %s (%d)  %s%s\n",
+                    i->i_loc.lineno, _PyOpcode_OpName[i->i_opcode], i->i_opcode, arg, jump);
 }
 
 static inline int
 basicblock_returns(const basicblock *b) {
-    cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+    cfg_instr *last = basicblock_last_instr(b);
     return last && (last->i_opcode == RETURN_VALUE || last->i_opcode == RETURN_CONST);
 }
 
@@ -212,9 +276,9 @@ static void
 dump_basicblock(const basicblock *b)
 {
     const char *b_return = basicblock_returns(b) ? "return " : "";
-    fprintf(stderr, "%d: [EH=%d CLD=%d WRM=%d NO_FT=%d %p] used: %d, depth: %d, offset: %d %s\n",
+    fprintf(stderr, "%d: [EH=%d CLD=%d WRM=%d NO_FT=%d %p] used: %d, depth: %d, %s\n",
         b->b_label.id, b->b_except_handler, b->b_cold, b->b_warm, BB_NO_FALLTHROUGH(b), b, b->b_iused,
-        b->b_startdepth, b->b_offset, b_return);
+        b->b_startdepth, b_return);
     if (b->b_instr) {
         int i;
         for (i = 0; i < b->b_iused; i++) {
@@ -246,26 +310,16 @@ cfg_builder_use_next_block(cfg_builder *g, basicblock *block)
     return block;
 }
 
-cfg_instr *
-_PyCfg_BasicblockLastInstr(const basicblock *b) {
-    assert(b->b_iused >= 0);
-    if (b->b_iused > 0) {
-        assert(b->b_instr != NULL);
-        return &b->b_instr[b->b_iused - 1];
-    }
-    return NULL;
-}
-
 static inline int
 basicblock_exits_scope(const basicblock *b) {
-    cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+    cfg_instr *last = basicblock_last_instr(b);
     return last && IS_SCOPE_EXIT_OPCODE(last->i_opcode);
 }
 
 static bool
 cfg_builder_current_block_is_terminated(cfg_builder *g)
 {
-    cfg_instr *last = _PyCfg_BasicblockLastInstr(g->g_curblock);
+    cfg_instr *last = basicblock_last_instr(g->g_curblock);
     if (last && IS_TERMINATOR_OPCODE(last->i_opcode)) {
         return true;
     }
@@ -318,8 +372,8 @@ cfg_builder_check(cfg_builder *g)
 }
 #endif
 
-int
-_PyCfgBuilder_Init(cfg_builder *g)
+static int
+init_cfg_builder(cfg_builder *g)
 {
     g->g_block_list = NULL;
     basicblock *block = cfg_builder_new_block(g);
@@ -331,9 +385,28 @@ _PyCfgBuilder_Init(cfg_builder *g)
     return SUCCESS;
 }
 
+cfg_builder *
+_PyCfgBuilder_New(void)
+{
+    cfg_builder *g = PyMem_Malloc(sizeof(cfg_builder));
+    if (g == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    memset(g, 0, sizeof(cfg_builder));
+    if (init_cfg_builder(g) < 0) {
+        PyMem_Free(g);
+        return NULL;
+    }
+    return g;
+}
+
 void
-_PyCfgBuilder_Fini(cfg_builder* g)
+_PyCfgBuilder_Free(cfg_builder *g)
 {
+    if (g == NULL) {
+        return;
+    }
     assert(cfg_builder_check(g));
     basicblock *b = g->g_block_list;
     while (b != NULL) {
@@ -344,6 +417,21 @@ _PyCfgBuilder_Fini(cfg_builder* g)
         PyObject_Free((void *)b);
         b = next;
     }
+    PyMem_Free(g);
+}
+
+int
+_PyCfgBuilder_CheckSize(cfg_builder *g)
+{
+    int nblocks = 0;
+    for (basicblock *b = g->g_block_list; b != NULL; b = b->b_list) {
+        nblocks++;
+    }
+    if ((size_t)nblocks > SIZE_MAX / sizeof(basicblock *)) {
+        PyErr_NoMemory();
+        return ERROR;
+    }
+    return SUCCESS;
 }
 
 int
@@ -389,7 +477,7 @@ no_empty_basic_blocks(cfg_builder *g) {
 static bool
 no_redundant_jumps(cfg_builder *g) {
     for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
-        cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+        cfg_instr *last = basicblock_last_instr(b);
         if (last != NULL) {
             if (IS_UNCONDITIONAL_JUMP_OPCODE(last->i_opcode)) {
                 assert(last->i_target != b->b_next);
@@ -408,21 +496,18 @@ no_redundant_jumps(cfg_builder *g) {
 
 static int
 normalize_jumps_in_block(cfg_builder *g, basicblock *b) {
-    cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
-    if (last == NULL || !is_jump(last)) {
+    cfg_instr *last = basicblock_last_instr(b);
+    if (last == NULL || !is_jump(last) ||
+        IS_UNCONDITIONAL_JUMP_OPCODE(last->i_opcode)) {
         return SUCCESS;
     }
     assert(!IS_ASSEMBLER_OPCODE(last->i_opcode));
+
     bool is_forward = last->i_target->b_visited == 0;
-    switch(last->i_opcode) {
-        case JUMP:
-            last->i_opcode = is_forward ? JUMP_FORWARD : JUMP_BACKWARD;
-            return SUCCESS;
-        case JUMP_NO_INTERRUPT:
-            last->i_opcode = is_forward ?
-                JUMP_FORWARD : JUMP_BACKWARD_NO_INTERRUPT;
-            return SUCCESS;
+    if (is_forward) {
+        return SUCCESS;
     }
+
     int reversed_opcode = 0;
     switch(last->i_opcode) {
         case POP_JUMP_IF_NOT_NONE:
@@ -438,9 +523,6 @@ normalize_jumps_in_block(cfg_builder *g, basicblock *b) {
             reversed_opcode = POP_JUMP_IF_FALSE;
             break;
     }
-    if (is_forward) {
-        return SUCCESS;
-    }
     /* transform 'conditional jump T' to
      * 'reversed_jump b_next' followed by 'jump_backwards T'
      */
@@ -450,7 +532,7 @@ normalize_jumps_in_block(cfg_builder *g, basicblock *b) {
     if (backwards_jump == NULL) {
         return ERROR;
     }
-    basicblock_addop(backwards_jump, JUMP, target->b_label.id, NO_LOCATION);
+    basicblock_addop(backwards_jump, JUMP, target->b_label.id, last->i_loc);
     backwards_jump->b_instr[0].i_target = target;
     last->i_opcode = reversed_opcode;
     last->i_target = b->b_next;
@@ -463,7 +545,7 @@ normalize_jumps_in_block(cfg_builder *g, basicblock *b) {
 
 
 static int
-normalize_jumps(_PyCfgBuilder *g)
+normalize_jumps(cfg_builder *g)
 {
     basicblock *entryblock = g->g_entryblock;
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
@@ -476,74 +558,6 @@ normalize_jumps(_PyCfgBuilder *g)
     return SUCCESS;
 }
 
-static void
-resolve_jump_offsets(basicblock *entryblock)
-{
-    int bsize, totsize, extended_arg_recompile;
-
-    /* Compute the size of each block and fixup jump args.
-       Replace block pointer with position in bytecode. */
-    do {
-        totsize = 0;
-        for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-            bsize = blocksize(b);
-            b->b_offset = totsize;
-            totsize += bsize;
-        }
-        extended_arg_recompile = 0;
-        for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-            bsize = b->b_offset;
-            for (int i = 0; i < b->b_iused; i++) {
-                cfg_instr *instr = &b->b_instr[i];
-                int isize = instr_size(instr);
-                /* jump offsets are computed relative to
-                 * the instruction pointer after fetching
-                 * the jump instruction.
-                 */
-                bsize += isize;
-                if (is_jump(instr)) {
-                    instr->i_oparg = instr->i_target->b_offset;
-                    if (instr->i_oparg < bsize) {
-                        assert(IS_BACKWARDS_JUMP_OPCODE(instr->i_opcode));
-                        instr->i_oparg = bsize - instr->i_oparg;
-                    }
-                    else {
-                        assert(!IS_BACKWARDS_JUMP_OPCODE(instr->i_opcode));
-                        instr->i_oparg -= bsize;
-                    }
-                    if (instr_size(instr) != isize) {
-                        extended_arg_recompile = 1;
-                    }
-                }
-            }
-        }
-
-    /* XXX: This is an awful hack that could hurt performance, but
-        on the bright side it should work until we come up
-        with a better solution.
-
-        The issue is that in the first loop blocksize() is called
-        which calls instr_size() which requires i_oparg be set
-        appropriately. There is a bootstrap problem because
-        i_oparg is calculated in the second loop above.
-
-        So we loop until we stop seeing new EXTENDED_ARGs.
-        The only EXTENDED_ARGs that could be popping up are
-        ones in jump instructions.  So this should converge
-        fairly quickly.
-    */
-    } while (extended_arg_recompile);
-}
-
-int
-_PyCfg_ResolveJumps(_PyCfgBuilder *g)
-{
-    RETURN_IF_ERROR(normalize_jumps(g));
-    assert(no_redundant_jumps(g));
-    resolve_jump_offsets(g->g_entryblock);
-    return SUCCESS;
-}
-
 static int
 check_cfg(cfg_builder *g) {
     for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
@@ -562,16 +576,23 @@ check_cfg(cfg_builder *g) {
     return SUCCESS;
 }
 
-/* Calculate the actual jump target from the target_label */
 static int
-translate_jump_labels_to_targets(basicblock *entryblock)
+get_max_label(basicblock *entryblock)
 {
-    int max_label = -1;
+    int lbl = -1;
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-        if (b->b_label.id > max_label) {
-            max_label = b->b_label.id;
+        if (b->b_label.id > lbl) {
+            lbl = b->b_label.id;
         }
     }
+    return lbl;
+}
+
+/* Calculate the actual jump target from the target_label */
+static int
+translate_jump_labels_to_targets(basicblock *entryblock)
+{
+    int max_label = get_max_label(entryblock);
     size_t mapsize = sizeof(basicblock *) * (max_label + 1);
     basicblock **label2block = (basicblock **)PyMem_Malloc(mapsize);
     if (!label2block) {
@@ -602,9 +623,9 @@ translate_jump_labels_to_targets(basicblock *entryblock)
 }
 
 int
-_PyCfg_JumpLabelsToTargets(basicblock *entryblock)
+_PyCfg_JumpLabelsToTargets(cfg_builder *g)
 {
-    return translate_jump_labels_to_targets(entryblock);
+    return translate_jump_labels_to_targets(g->g_entryblock);
 }
 
 static int
@@ -626,10 +647,14 @@ mark_except_handlers(basicblock *entryblock) {
 }
 
 
-typedef _PyCfgExceptStack ExceptStack;
+struct _PyCfgExceptStack {
+    basicblock *handlers[CO_MAXBLOCKS+1];
+    int depth;
+};
+
 
 static basicblock *
-push_except_block(ExceptStack *stack, cfg_instr *setup) {
+push_except_block(struct _PyCfgExceptStack *stack, cfg_instr *setup) {
     assert(is_block_push(setup));
     int opcode = setup->i_opcode;
     basicblock * target = setup->i_target;
@@ -641,19 +666,19 @@ push_except_block(ExceptStack *stack, cfg_instr *setup) {
 }
 
 static basicblock *
-pop_except_block(ExceptStack *stack) {
+pop_except_block(struct _PyCfgExceptStack *stack) {
     assert(stack->depth > 0);
     return stack->handlers[--stack->depth];
 }
 
 static basicblock *
-except_stack_top(ExceptStack *stack) {
+except_stack_top(struct _PyCfgExceptStack *stack) {
     return stack->handlers[stack->depth];
 }
 
-static ExceptStack *
+static struct _PyCfgExceptStack *
 make_except_stack(void) {
-    ExceptStack *new = PyMem_Malloc(sizeof(ExceptStack));
+    struct _PyCfgExceptStack *new = PyMem_Malloc(sizeof(struct _PyCfgExceptStack));
     if (new == NULL) {
         PyErr_NoMemory();
         return NULL;
@@ -663,14 +688,14 @@ make_except_stack(void) {
     return new;
 }
 
-static ExceptStack *
-copy_except_stack(ExceptStack *stack) {
-    ExceptStack *copy = PyMem_Malloc(sizeof(ExceptStack));
+static struct _PyCfgExceptStack *
+copy_except_stack(struct _PyCfgExceptStack *stack) {
+    struct _PyCfgExceptStack *copy = PyMem_Malloc(sizeof(struct _PyCfgExceptStack));
     if (copy == NULL) {
         PyErr_NoMemory();
         return NULL;
     }
-    memcpy(copy, stack, sizeof(ExceptStack));
+    memcpy(copy, stack, sizeof(struct _PyCfgExceptStack));
     return copy;
 }
 
@@ -688,23 +713,28 @@ make_cfg_traversal_stack(basicblock *entryblock) {
     return stack;
 }
 
-Py_LOCAL_INLINE(void)
+Py_LOCAL_INLINE(int)
 stackdepth_push(basicblock ***sp, basicblock *b, int depth)
 {
-    assert(b->b_startdepth < 0 || b->b_startdepth == depth);
+    if (!(b->b_startdepth < 0 || b->b_startdepth == depth)) {
+        PyErr_Format(PyExc_ValueError, "Invalid CFG, inconsistent stackdepth");
+        return ERROR;
+    }
     if (b->b_startdepth < depth && b->b_startdepth < 100) {
         assert(b->b_startdepth < 0);
         b->b_startdepth = depth;
         *(*sp)++ = b;
     }
+    return SUCCESS;
 }
 
 /* Find the flow path that needs the largest stack.  We assume that
  * cycles in the flow graph have no net effect on the stack depth.
  */
-int
-_PyCfg_Stackdepth(basicblock *entryblock, int code_flags)
+static int
+calculate_stackdepth(cfg_builder *g)
 {
+    basicblock *entryblock = g->g_entryblock;
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
         b->b_startdepth = INT_MIN;
     }
@@ -713,14 +743,13 @@ _PyCfg_Stackdepth(basicblock *entryblock, int code_flags)
         return ERROR;
     }
 
+
+    int stackdepth = -1;
     int maxdepth = 0;
     basicblock **sp = stack;
-    if (code_flags & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR)) {
-        stackdepth_push(&sp, entryblock, 1);
-    } else {
-        stackdepth_push(&sp, entryblock, 0);
+    if (stackdepth_push(&sp, entryblock, 0) < 0) {
+        goto error;
     }
-
     while (sp != stack) {
         basicblock *b = *--sp;
         int depth = b->b_startdepth;
@@ -728,27 +757,40 @@ _PyCfg_Stackdepth(basicblock *entryblock, int code_flags)
         basicblock *next = b->b_next;
         for (int i = 0; i < b->b_iused; i++) {
             cfg_instr *instr = &b->b_instr[i];
-            int effect = PyCompile_OpcodeStackEffectWithJump(instr->i_opcode, instr->i_oparg, 0);
+            int effect = PyCompile_OpcodeStackEffectWithJump(
+                             instr->i_opcode, instr->i_oparg, 0);
             if (effect == PY_INVALID_STACK_EFFECT) {
                 PyErr_Format(PyExc_SystemError,
-                             "compiler PyCompile_OpcodeStackEffectWithJump(opcode=%d, arg=%i) failed",
+                             "Invalid stack effect for opcode=%d, arg=%i",
                              instr->i_opcode, instr->i_oparg);
-                return ERROR;
+                goto error;
             }
             int new_depth = depth + effect;
-            assert(new_depth >= 0); /* invalid code or bug in stackdepth() */
+            if (new_depth < 0) {
+               PyErr_Format(PyExc_ValueError,
+                            "Invalid CFG, stack underflow");
+               goto error;
+            }
             if (new_depth > maxdepth) {
                 maxdepth = new_depth;
             }
             if (HAS_TARGET(instr->i_opcode)) {
-                effect = PyCompile_OpcodeStackEffectWithJump(instr->i_opcode, instr->i_oparg, 1);
-                assert(effect != PY_INVALID_STACK_EFFECT);
+                effect = PyCompile_OpcodeStackEffectWithJump(
+                             instr->i_opcode, instr->i_oparg, 1);
+                if (effect == PY_INVALID_STACK_EFFECT) {
+                    PyErr_Format(PyExc_SystemError,
+                                 "Invalid stack effect for opcode=%d, arg=%i",
+                                 instr->i_opcode, instr->i_oparg);
+                    goto error;
+                }
                 int target_depth = depth + effect;
                 assert(target_depth >= 0); /* invalid code or bug in stackdepth() */
                 if (target_depth > maxdepth) {
                     maxdepth = target_depth;
                 }
-                stackdepth_push(&sp, instr->i_target, target_depth);
+                if (stackdepth_push(&sp, instr->i_target, target_depth) < 0) {
+                    goto error;
+                }
             }
             depth = new_depth;
             assert(!IS_ASSEMBLER_OPCODE(instr->i_opcode));
@@ -762,11 +804,15 @@ _PyCfg_Stackdepth(basicblock *entryblock, int code_flags)
         }
         if (next != NULL) {
             assert(BB_HAS_FALLTHROUGH(b));
-            stackdepth_push(&sp, next, depth);
+            if (stackdepth_push(&sp, next, depth) < 0) {
+                goto error;
+            }
         }
     }
+    stackdepth = maxdepth;
+error:
     PyMem_Free(stack);
-    return maxdepth;
+    return stackdepth;
 }
 
 static int
@@ -775,7 +821,7 @@ label_exception_targets(basicblock *entryblock) {
     if (todo_stack == NULL) {
         return ERROR;
     }
-    ExceptStack *except_stack = make_except_stack();
+    struct _PyCfgExceptStack *except_stack = make_except_stack();
     if (except_stack == NULL) {
         PyMem_Free(todo_stack);
         PyErr_NoMemory();
@@ -795,11 +841,12 @@ label_exception_targets(basicblock *entryblock) {
         assert(except_stack != NULL);
         b->b_exceptstack = NULL;
         handler = except_stack_top(except_stack);
+        int last_yield_except_depth = -1;
         for (int i = 0; i < b->b_iused; i++) {
             cfg_instr *instr = &b->b_instr[i];
             if (is_block_push(instr)) {
                 if (!instr->i_target->b_visited) {
-                    ExceptStack *copy = copy_except_stack(except_stack);
+                    struct _PyCfgExceptStack *copy = copy_except_stack(except_stack);
                     if (copy == NULL) {
                         goto error;
                     }
@@ -818,7 +865,7 @@ label_exception_targets(basicblock *entryblock) {
                 assert(i == b->b_iused -1);
                 if (!instr->i_target->b_visited) {
                     if (BB_HAS_FALLTHROUGH(b)) {
-                        ExceptStack *copy = copy_except_stack(except_stack);
+                        struct _PyCfgExceptStack *copy = copy_except_stack(except_stack);
                         if (copy == NULL) {
                             goto error;
                         }
@@ -833,10 +880,21 @@ label_exception_targets(basicblock *entryblock) {
                     todo++;
                 }
             }
-            else {
-                if (instr->i_opcode == YIELD_VALUE) {
-                    instr->i_oparg = except_stack->depth;
+            else if (instr->i_opcode == YIELD_VALUE) {
+                instr->i_except = handler;
+                last_yield_except_depth = except_stack->depth;
+            }
+            else if (instr->i_opcode == RESUME) {
+                instr->i_except = handler;
+                if (instr->i_oparg != RESUME_AT_FUNC_START) {
+                    assert(last_yield_except_depth >= 0);
+                    if (last_yield_except_depth == 1) {
+                        instr->i_oparg |= RESUME_OPARG_DEPTH1_MASK;
+                    }
+                    last_yield_except_depth = -1;
                 }
+            }
+            else {
                 instr->i_except = handler;
             }
         }
@@ -915,6 +973,7 @@ eliminate_empty_basic_blocks(cfg_builder *g) {
     while(g->g_entryblock && g->g_entryblock->b_iused == 0) {
         g->g_entryblock = g->g_entryblock->b_next;
     }
+    int next_lbl = get_max_label(g->g_entryblock) + 1;
     for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
         assert(b->b_iused > 0);
         for (int i = 0; i < b->b_iused; i++) {
@@ -924,7 +983,13 @@ eliminate_empty_basic_blocks(cfg_builder *g) {
                 while (target->b_iused == 0) {
                     target = target->b_next;
                 }
-                instr->i_target = target;
+                if (instr->i_target != target) {
+                    if (!IS_LABEL(target->b_label)) {
+                        target->b_label.id = next_lbl++;
+                    }
+                    instr->i_target = target;
+                    instr->i_oparg = target->b_label.id;
+                }
                 assert(instr->i_target && instr->i_target->b_iused > 0);
             }
         }
@@ -965,7 +1030,17 @@ remove_redundant_nops(basicblock *bb) {
                 }
                 /* or if last instruction in BB and next BB has same line number */
                 if (next) {
-                    if (lineno == next->b_instr[0].i_loc.lineno) {
+                    location next_loc = NO_LOCATION;
+                    for (int next_i=0; next_i < next->b_iused; next_i++) {
+                        cfg_instr *instr = &next->b_instr[next_i];
+                        if (instr->i_opcode == NOP && instr->i_loc.lineno == NO_LOCATION.lineno) {
+                            /* Skip over NOPs without location, they will be removed */
+                            continue;
+                        }
+                        next_loc = instr->i_loc;
+                        break;
+                    }
+                    if (lineno == next_loc.lineno) {
                         continue;
                     }
                 }
@@ -1037,7 +1112,7 @@ remove_redundant_jumps(cfg_builder *g) {
      */
     assert(no_empty_basic_blocks(g));
     for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
-        cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+        cfg_instr *last = basicblock_last_instr(b);
         assert(last != NULL);
         assert(!IS_ASSEMBLER_OPCODE(last->i_opcode));
         if (IS_UNCONDITIONAL_JUMP_OPCODE(last->i_opcode)) {
@@ -1063,7 +1138,7 @@ remove_redundant_jumps(cfg_builder *g) {
  */
 static int
 inline_small_exit_blocks(basicblock *bb) {
-    cfg_instr *last = _PyCfg_BasicblockLastInstr(bb);
+    cfg_instr *last = basicblock_last_instr(bb);
     if (last == NULL) {
         return 0;
     }
@@ -1103,7 +1178,7 @@ static PyObject*
 get_const_value(int opcode, int oparg, PyObject *co_consts)
 {
     PyObject *constant = NULL;
-    assert(HAS_CONST(opcode));
+    assert(OPCODE_HAS_CONST(opcode));
     if (opcode == LOAD_CONST) {
         constant = PyList_GET_ITEM(co_consts, oparg);
     }
@@ -1116,6 +1191,36 @@ get_const_value(int opcode, int oparg, PyObject *co_consts)
     return Py_NewRef(constant);
 }
 
+// Steals a reference to newconst.
+static int
+add_const(PyObject *newconst, PyObject *consts, PyObject *const_cache)
+{
+    if (_PyCompile_ConstCacheMergeOne(const_cache, &newconst) < 0) {
+        Py_DECREF(newconst);
+        return -1;
+    }
+
+    Py_ssize_t index;
+    for (index = 0; index < PyList_GET_SIZE(consts); index++) {
+        if (PyList_GET_ITEM(consts, index) == newconst) {
+            break;
+        }
+    }
+    if (index == PyList_GET_SIZE(consts)) {
+        if ((size_t)index >= (size_t)INT_MAX - 1) {
+            PyErr_SetString(PyExc_OverflowError, "too many constants");
+            Py_DECREF(newconst);
+            return -1;
+        }
+        if (PyList_Append(consts, newconst)) {
+            Py_DECREF(newconst);
+            return -1;
+        }
+    }
+    Py_DECREF(newconst);
+    return (int)index;
+}
+
 /* Replace LOAD_CONST c1, LOAD_CONST c2 ... LOAD_CONST cn, BUILD_TUPLE n
    with    LOAD_CONST (c1, c2, ... cn).
    The consts table must still be in list form so that the
@@ -1134,7 +1239,7 @@ fold_tuple_on_constants(PyObject *const_cache,
     assert(inst[n].i_oparg == n);
 
     for (int i = 0; i < n; i++) {
-        if (!HAS_CONST(inst[i].i_opcode)) {
+        if (!OPCODE_HAS_CONST(inst[i].i_opcode)) {
             return SUCCESS;
         }
     }
@@ -1153,33 +1258,14 @@ fold_tuple_on_constants(PyObject *const_cache,
         }
         PyTuple_SET_ITEM(newconst, i, constant);
     }
-    if (_PyCompile_ConstCacheMergeOne(const_cache, &newconst) < 0) {
-        Py_DECREF(newconst);
+    int index = add_const(newconst, consts, const_cache);
+    if (index < 0) {
         return ERROR;
     }
-
-    Py_ssize_t index;
-    for (index = 0; index < PyList_GET_SIZE(consts); index++) {
-        if (PyList_GET_ITEM(consts, index) == newconst) {
-            break;
-        }
-    }
-    if (index == PyList_GET_SIZE(consts)) {
-        if ((size_t)index >= (size_t)INT_MAX - 1) {
-            Py_DECREF(newconst);
-            PyErr_SetString(PyExc_OverflowError, "too many constants");
-            return ERROR;
-        }
-        if (PyList_Append(consts, newconst)) {
-            Py_DECREF(newconst);
-            return ERROR;
-        }
-    }
-    Py_DECREF(newconst);
     for (int i = 0; i < n; i++) {
         INSTR_SET_OP0(&inst[i], NOP);
     }
-    INSTR_SET_OP1(&inst[n], LOAD_CONST, (int)index);
+    INSTR_SET_OP1(&inst[n], LOAD_CONST, index);
     return SUCCESS;
 }
 
@@ -1293,6 +1379,11 @@ swaptimize(basicblock *block, int *ix)
      (opcode) == STORE_FAST_MAYBE_NULL || \
      (opcode) == POP_TOP)
 
+#define STORES_TO(instr) \
+    (((instr).i_opcode == STORE_FAST || \
+      (instr).i_opcode == STORE_FAST_MAYBE_NULL) \
+     ? (instr).i_oparg : -1)
+
 static int
 next_swappable_instruction(basicblock *block, int i, int lineno)
 {
@@ -1344,6 +1435,23 @@ apply_static_swaps(basicblock *block, int i)
                 return;
             }
         }
+        // The reordering is not safe if the two instructions to be swapped
+        // store to the same location, or if any intervening instruction stores
+        // to the same location as either of them.
+        int store_j = STORES_TO(block->b_instr[j]);
+        int store_k = STORES_TO(block->b_instr[k]);
+        if (store_j >= 0 || store_k >= 0) {
+            if (store_j == store_k) {
+                return;
+            }
+            for (int idx = j + 1; idx < k; idx++) {
+                int store_idx = STORES_TO(block->b_instr[idx]);
+                if (store_idx >= 0 && (store_idx == store_j || store_idx == store_k)) {
+                    return;
+                }
+            }
+        }
+
         // Success!
         INSTR_SET_OP0(swap, NOP);
         cfg_instr temp = block->b_instr[j];
@@ -1411,24 +1519,71 @@ optimize_basic_block(PyObject *const_cache, basicblock *bb, PyObject *consts)
                         }
                         break;
                     case IS_OP:
+                        // Fold to POP_JUMP_IF_NONE:
+                        // - LOAD_CONST(None) IS_OP(0) POP_JUMP_IF_TRUE
+                        // - LOAD_CONST(None) IS_OP(1) POP_JUMP_IF_FALSE
+                        // - LOAD_CONST(None) IS_OP(0) TO_BOOL POP_JUMP_IF_TRUE
+                        // - LOAD_CONST(None) IS_OP(1) TO_BOOL POP_JUMP_IF_FALSE
+                        // Fold to POP_JUMP_IF_NOT_NONE:
+                        // - LOAD_CONST(None) IS_OP(0) POP_JUMP_IF_FALSE
+                        // - LOAD_CONST(None) IS_OP(1) POP_JUMP_IF_TRUE
+                        // - LOAD_CONST(None) IS_OP(0) TO_BOOL POP_JUMP_IF_FALSE
+                        // - LOAD_CONST(None) IS_OP(1) TO_BOOL POP_JUMP_IF_TRUE
                         cnt = get_const_value(opcode, oparg, consts);
                         if (cnt == NULL) {
                             goto error;
                         }
-                        int jump_op = i+2 < bb->b_iused ? bb->b_instr[i+2].i_opcode : 0;
-                        if (Py_IsNone(cnt) && (jump_op == POP_JUMP_IF_FALSE || jump_op == POP_JUMP_IF_TRUE)) {
-                            unsigned char nextarg = bb->b_instr[i+1].i_oparg;
-                            INSTR_SET_OP0(inst, NOP);
-                            INSTR_SET_OP0(&bb->b_instr[i + 1], NOP);
-                            bb->b_instr[i+2].i_opcode = nextarg ^ (jump_op == POP_JUMP_IF_FALSE) ?
-                                    POP_JUMP_IF_NOT_NONE : POP_JUMP_IF_NONE;
+                        if (!Py_IsNone(cnt)) {
+                            Py_DECREF(cnt);
+                            break;
                         }
-                        Py_DECREF(cnt);
+                        if (bb->b_iused <= i + 2) {
+                            break;
+                        }
+                        cfg_instr *is_instr = &bb->b_instr[i + 1];
+                        cfg_instr *jump_instr = &bb->b_instr[i + 2];
+                        // Get rid of TO_BOOL regardless:
+                        if (jump_instr->i_opcode == TO_BOOL) {
+                            INSTR_SET_OP0(jump_instr, NOP);
+                            if (bb->b_iused <= i + 3) {
+                                break;
+                            }
+                            jump_instr = &bb->b_instr[i + 3];
+                        }
+                        bool invert = is_instr->i_oparg;
+                        if (jump_instr->i_opcode == POP_JUMP_IF_FALSE) {
+                            invert = !invert;
+                        }
+                        else if (jump_instr->i_opcode != POP_JUMP_IF_TRUE) {
+                            break;
+                        }
+                        INSTR_SET_OP0(inst, NOP);
+                        INSTR_SET_OP0(is_instr, NOP);
+                        jump_instr->i_opcode = invert ? POP_JUMP_IF_NOT_NONE
+                                                      : POP_JUMP_IF_NONE;
                         break;
                     case RETURN_VALUE:
                         INSTR_SET_OP0(inst, NOP);
                         INSTR_SET_OP1(&bb->b_instr[++i], RETURN_CONST, oparg);
                         break;
+                    case TO_BOOL:
+                        cnt = get_const_value(opcode, oparg, consts);
+                        if (cnt == NULL) {
+                            goto error;
+                        }
+                        is_true = PyObject_IsTrue(cnt);
+                        Py_DECREF(cnt);
+                        if (is_true == -1) {
+                            goto error;
+                        }
+                        cnt = PyBool_FromLong(is_true);
+                        int index = add_const(cnt, consts, const_cache);
+                        if (index < 0) {
+                            return ERROR;
+                        }
+                        INSTR_SET_OP0(inst, NOP);
+                        INSTR_SET_OP1(&bb->b_instr[i + 1], LOAD_CONST, index);
+                        break;
                 }
                 break;
             }
@@ -1493,27 +1648,71 @@ optimize_basic_block(PyObject *const_cache, basicblock *bb, PyObject *consts)
                     */
                 }
                 break;
+            case STORE_FAST:
+                if (opcode == nextop &&
+                    oparg == bb->b_instr[i+1].i_oparg &&
+                    bb->b_instr[i].i_loc.lineno == bb->b_instr[i+1].i_loc.lineno) {
+                    bb->b_instr[i].i_opcode = POP_TOP;
+                    bb->b_instr[i].i_oparg = 0;
+                }
+                break;
             case SWAP:
                 if (oparg == 1) {
                     INSTR_SET_OP0(inst, NOP);
-                    break;
                 }
-                if (swaptimize(bb, &i) < 0) {
-                    goto error;
+                break;
+            case LOAD_GLOBAL:
+                if (nextop == PUSH_NULL && (oparg & 1) == 0) {
+                    INSTR_SET_OP1(inst, LOAD_GLOBAL, oparg | 1);
+                    INSTR_SET_OP0(&bb->b_instr[i + 1], NOP);
                 }
-                apply_static_swaps(bb, i);
                 break;
-            case KW_NAMES:
+            case COMPARE_OP:
+                if (nextop == TO_BOOL) {
+                    INSTR_SET_OP0(inst, NOP);
+                    INSTR_SET_OP1(&bb->b_instr[i + 1], COMPARE_OP, oparg | 16);
+                    continue;
+                }
+                break;
+            case CONTAINS_OP:
+            case IS_OP:
+                if (nextop == TO_BOOL) {
+                    INSTR_SET_OP0(inst, NOP);
+                    INSTR_SET_OP1(&bb->b_instr[i + 1], opcode, oparg);
+                    continue;
+                }
                 break;
-            case PUSH_NULL:
-                if (nextop == LOAD_GLOBAL && (inst[1].i_opcode & 1) == 0) {
+            case TO_BOOL:
+                if (nextop == TO_BOOL) {
                     INSTR_SET_OP0(inst, NOP);
-                    inst[1].i_oparg |= 1;
+                    continue;
+                }
+                break;
+            case UNARY_NOT:
+                if (nextop == TO_BOOL) {
+                    INSTR_SET_OP0(inst, NOP);
+                    INSTR_SET_OP0(&bb->b_instr[i + 1], UNARY_NOT);
+                    continue;
+                }
+                if (nextop == UNARY_NOT) {
+                    INSTR_SET_OP0(inst, NOP);
+                    INSTR_SET_OP0(&bb->b_instr[i + 1], NOP);
+                    continue;
                 }
                 break;
             default:
-                /* All HAS_CONST opcodes should be handled with LOAD_CONST */
-                assert (!HAS_CONST(inst->i_opcode));
+                /* All OPCODE_HAS_CONST opcodes should be handled with LOAD_CONST */
+                assert (!OPCODE_HAS_CONST(inst->i_opcode));
+        }
+    }
+
+    for (int i = 0; i < bb->b_iused; i++) {
+        cfg_instr *inst = &bb->b_instr[i];
+        if (inst->i_opcode == SWAP) {
+            if (swaptimize(bb, &i) < 0) {
+                goto error;
+            }
+            apply_static_swaps(bb, i);
         }
     }
     return SUCCESS;
@@ -1564,6 +1763,56 @@ optimize_cfg(cfg_builder *g, PyObject *consts, PyObject *const_cache)
     return SUCCESS;
 }
 
+static void
+make_super_instruction(cfg_instr *inst1, cfg_instr *inst2, int super_op)
+{
+    int32_t line1 = inst1->i_loc.lineno;
+    int32_t line2 = inst2->i_loc.lineno;
+    /* Skip if instructions are on different lines */
+    if (line1 >= 0 && line2 >= 0 && line1 != line2) {
+        return;
+    }
+    if (inst1->i_oparg >= 16 || inst2->i_oparg >= 16) {
+        return;
+    }
+    INSTR_SET_OP1(inst1, super_op, (inst1->i_oparg << 4) | inst2->i_oparg);
+    INSTR_SET_OP0(inst2, NOP);
+}
+
+static void
+insert_superinstructions(cfg_builder *g)
+{
+    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
+
+        for (int i = 0; i < b->b_iused; i++) {
+            cfg_instr *inst = &b->b_instr[i];
+            int nextop = i+1 < b->b_iused ? b->b_instr[i+1].i_opcode : 0;
+            switch(inst->i_opcode) {
+                case LOAD_FAST:
+                    if (nextop == LOAD_FAST) {
+                        make_super_instruction(inst, &b->b_instr[i + 1], LOAD_FAST_LOAD_FAST);
+                    }
+                    break;
+                case STORE_FAST:
+                    switch (nextop) {
+                        case LOAD_FAST:
+                            make_super_instruction(inst, &b->b_instr[i + 1], STORE_FAST_LOAD_FAST);
+                            break;
+                        case STORE_FAST:
+                            make_super_instruction(inst, &b->b_instr[i + 1], STORE_FAST_STORE_FAST);
+                            break;
+                    }
+                    break;
+            }
+        }
+    }
+    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
+        remove_redundant_nops(b);
+    }
+    eliminate_empty_basic_blocks(g);
+    assert(no_redundant_nops(g));
+}
+
 // helper functions for add_checks_for_loads_of_unknown_variables
 static inline void
 maybe_push(basicblock *b, uint64_t unsafe_mask, basicblock ***sp)
@@ -1591,7 +1840,6 @@ scan_block_for_locals(basicblock *b, basicblock ***sp)
     for (int i = 0; i < b->b_iused; i++) {
         cfg_instr *instr = &b->b_instr[i];
         assert(instr->i_opcode != EXTENDED_ARG);
-        assert(!IS_SUPERINSTRUCTION_OPCODE(instr->i_opcode));
         if (instr->i_except != NULL) {
             maybe_push(instr->i_except, unsafe_mask, sp);
         }
@@ -1624,7 +1872,7 @@ scan_block_for_locals(basicblock *b, basicblock ***sp)
     if (b->b_next && BB_HAS_FALLTHROUGH(b)) {
         maybe_push(b->b_next, unsafe_mask, sp);
     }
-    cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+    cfg_instr *last = basicblock_last_instr(b);
     if (last && is_jump(last)) {
         assert(last->i_target != NULL);
         maybe_push(last->i_target, unsafe_mask, sp);
@@ -1650,7 +1898,6 @@ fast_scan_many_locals(basicblock *entryblock, int nlocals)
         for (int i = 0; i < b->b_iused; i++) {
             cfg_instr *instr = &b->b_instr[i];
             assert(instr->i_opcode != EXTENDED_ARG);
-            assert(!IS_SUPERINSTRUCTION_OPCODE(instr->i_opcode));
             int arg = instr->i_oparg;
             if (arg < 64) {
                 continue;
@@ -1705,7 +1952,7 @@ remove_unused_consts(basicblock *entryblock, PyObject *consts)
     /* mark used consts */
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
         for (int i = 0; i < b->b_iused; i++) {
-            if (HAS_CONST(b->b_instr[i].i_opcode)) {
+            if (OPCODE_HAS_CONST(b->b_instr[i].i_opcode)) {
                 int index = b->b_instr[i].i_oparg;
                 index_map[index] = index;
             }
@@ -1758,7 +2005,7 @@ remove_unused_consts(basicblock *entryblock, PyObject *consts)
 
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
         for (int i = 0; i < b->b_iused; i++) {
-            if (HAS_CONST(b->b_instr[i].i_opcode)) {
+            if (OPCODE_HAS_CONST(b->b_instr[i].i_opcode)) {
                 int index = b->b_instr[i].i_oparg;
                 assert(reverse_index_map[index] >= 0);
                 assert(reverse_index_map[index] < n_used_consts);
@@ -1908,7 +2155,7 @@ mark_cold(basicblock *entryblock) {
 
 
 static int
-push_cold_blocks_to_end(cfg_builder *g, int code_flags) {
+push_cold_blocks_to_end(cfg_builder *g) {
     basicblock *entryblock = g->g_entryblock;
     if (entryblock->b_next == NULL) {
         /* single basicblock, no need to reorder */
@@ -1916,6 +2163,8 @@ push_cold_blocks_to_end(cfg_builder *g, int code_flags) {
     }
     RETURN_IF_ERROR(mark_cold(entryblock));
 
+    int next_lbl = get_max_label(g->g_entryblock) + 1;
+
     /* If we have a cold block with fallthrough to a warm block, add */
     /* an explicit jump instead of fallthrough */
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
@@ -1924,13 +2173,16 @@ push_cold_blocks_to_end(cfg_builder *g, int code_flags) {
             if (explicit_jump == NULL) {
                 return ERROR;
             }
+            if (!IS_LABEL(b->b_next->b_label)) {
+                b->b_next->b_label.id = next_lbl++;
+            }
             basicblock_addop(explicit_jump, JUMP, b->b_next->b_label.id, NO_LOCATION);
             explicit_jump->b_cold = 1;
             explicit_jump->b_next = b->b_next;
             b->b_next = explicit_jump;
 
             /* set target */
-            cfg_instr *last = _PyCfg_BasicblockLastInstr(explicit_jump);
+            cfg_instr *last = basicblock_last_instr(explicit_jump);
             last->i_target = explicit_jump->b_next;
         }
     }
@@ -1981,8 +2233,8 @@ push_cold_blocks_to_end(cfg_builder *g, int code_flags) {
     return SUCCESS;
 }
 
-void
-_PyCfg_ConvertPseudoOps(basicblock *entryblock)
+static void
+convert_pseudo_ops(basicblock *entryblock)
 {
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
         for (int i = 0; i < b->b_iused; i++) {
@@ -1990,7 +2242,12 @@ _PyCfg_ConvertPseudoOps(basicblock *entryblock)
             if (is_block_push(instr) || instr->i_opcode == POP_BLOCK) {
                 INSTR_SET_OP0(instr, NOP);
             }
+            else if (instr->i_opcode == LOAD_CLOSURE) {
+                assert(SAME_OPCODE_METADATA(LOAD_CLOSURE, LOAD_FAST));
+                instr->i_opcode = LOAD_FAST;
+            }
             else if (instr->i_opcode == STORE_FAST_MAYBE_NULL) {
+                assert(SAME_OPCODE_METADATA(STORE_FAST_MAYBE_NULL, STORE_FAST));
                 instr->i_opcode = STORE_FAST;
             }
         }
@@ -2013,6 +2270,7 @@ is_exit_without_lineno(basicblock *b) {
     return true;
 }
 
+
 /* PEP 626 mandates that the f_lineno of a frame is correct
  * after a frame terminates. It would be prohibitively expensive
  * to continuously update the f_lineno field at runtime,
@@ -2026,11 +2284,14 @@ static int
 duplicate_exits_without_lineno(cfg_builder *g)
 {
     assert(no_empty_basic_blocks(g));
+
+    int next_lbl = get_max_label(g->g_entryblock) + 1;
+
     /* Copy all exit blocks without line number that are targets of a jump.
      */
     basicblock *entryblock = g->g_entryblock;
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-        cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+        cfg_instr *last = basicblock_last_instr(b);
         assert(last != NULL);
         if (is_jump(last)) {
             basicblock *target = last->i_target;
@@ -2044,6 +2305,7 @@ duplicate_exits_without_lineno(cfg_builder *g)
                 target->b_predecessors--;
                 new_target->b_predecessors = 1;
                 new_target->b_next = target->b_next;
+                new_target->b_label.id = next_lbl++;
                 target->b_next = new_target;
             }
         }
@@ -2054,7 +2316,7 @@ duplicate_exits_without_lineno(cfg_builder *g)
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
         if (BB_HAS_FALLTHROUGH(b) && b->b_next && b->b_iused > 0) {
             if (is_exit_without_lineno(b->b_next)) {
-                cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+                cfg_instr *last = basicblock_last_instr(b);
                 assert(last != NULL);
                 b->b_next->b_instr[0].i_loc = last->i_loc;
             }
@@ -2074,7 +2336,7 @@ duplicate_exits_without_lineno(cfg_builder *g)
 static void
 propagate_line_numbers(basicblock *entryblock) {
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-        cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+        cfg_instr *last = basicblock_last_instr(b);
         if (last == NULL) {
             continue;
         }
@@ -2114,7 +2376,7 @@ guarantee_lineno_for_exits(basicblock *entryblock, int firstlineno) {
     int lineno = firstlineno;
     assert(lineno > 0);
     for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-        cfg_instr *last = _PyCfg_BasicblockLastInstr(b);
+        cfg_instr *last = basicblock_last_instr(b);
         if (last == NULL) {
             continue;
         }
@@ -2144,7 +2406,7 @@ resolve_line_numbers(cfg_builder *g, int firstlineno)
 
 int
 _PyCfg_OptimizeCodeUnit(cfg_builder *g, PyObject *consts, PyObject *const_cache,
-                       int code_flags, int nlocals, int nparams, int firstlineno)
+                        int nlocals, int nparams, int firstlineno)
 {
     assert(cfg_builder_check(g));
     /** Preprocessing **/
@@ -2159,8 +2421,291 @@ _PyCfg_OptimizeCodeUnit(cfg_builder *g, PyObject *consts, PyObject *const_cache,
     RETURN_IF_ERROR(
         add_checks_for_loads_of_uninitialized_variables(
             g->g_entryblock, nlocals, nparams));
+    insert_superinstructions(g);
 
-    RETURN_IF_ERROR(push_cold_blocks_to_end(g, code_flags));
+    RETURN_IF_ERROR(push_cold_blocks_to_end(g));
     RETURN_IF_ERROR(resolve_line_numbers(g, firstlineno));
     return SUCCESS;
 }
+
+static int *
+build_cellfixedoffsets(_PyCompile_CodeUnitMetadata *umd)
+{
+    int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
+    int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
+    int nfreevars = (int)PyDict_GET_SIZE(umd->u_freevars);
+
+    int noffsets = ncellvars + nfreevars;
+    int *fixed = PyMem_New(int, noffsets);
+    if (fixed == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    for (int i = 0; i < noffsets; i++) {
+        fixed[i] = nlocals + i;
+    }
+
+    PyObject *varname, *cellindex;
+    Py_ssize_t pos = 0;
+    while (PyDict_Next(umd->u_cellvars, &pos, &varname, &cellindex)) {
+        PyObject *varindex;
+        if (PyDict_GetItemRef(umd->u_varnames, varname, &varindex) < 0) {
+            goto error;
+        }
+        if (varindex == NULL) {
+            continue;
+        }
+
+        int argoffset = PyLong_AsInt(varindex);
+        Py_DECREF(varindex);
+        if (argoffset == -1 && PyErr_Occurred()) {
+            goto error;
+        }
+
+        int oldindex = PyLong_AsInt(cellindex);
+        if (oldindex == -1 && PyErr_Occurred()) {
+            goto error;
+        }
+        fixed[oldindex] = argoffset;
+    }
+    return fixed;
+
+error:
+    PyMem_Free(fixed);
+    return NULL;
+}
+
+#define IS_GENERATOR(CF) \
+    ((CF) & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR))
+
+static int
+insert_prefix_instructions(_PyCompile_CodeUnitMetadata *umd, basicblock *entryblock,
+                           int *fixed, int nfreevars, int code_flags)
+{
+    assert(umd->u_firstlineno > 0);
+
+    /* Add the generator prefix instructions. */
+    if (IS_GENERATOR(code_flags)) {
+        /* Note that RETURN_GENERATOR + POP_TOP have a net stack effect
+         * of 0. This is because RETURN_GENERATOR pushes an element
+         * with _PyFrame_StackPush before switching stacks.
+         */
+
+        location loc = LOCATION(umd->u_firstlineno, umd->u_firstlineno, -1, -1);
+        cfg_instr make_gen = {
+            .i_opcode = RETURN_GENERATOR,
+            .i_oparg = 0,
+            .i_loc = loc,
+            .i_target = NULL,
+        };
+        RETURN_IF_ERROR(basicblock_insert_instruction(entryblock, 0, &make_gen));
+        cfg_instr pop_top = {
+            .i_opcode = POP_TOP,
+            .i_oparg = 0,
+            .i_loc = loc,
+            .i_target = NULL,
+        };
+        RETURN_IF_ERROR(basicblock_insert_instruction(entryblock, 1, &pop_top));
+    }
+
+    /* Set up cells for any variable that escapes, to be put in a closure. */
+    const int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
+    if (ncellvars) {
+        // umd->u_cellvars has the cells out of order so we sort them
+        // before adding the MAKE_CELL instructions.  Note that we
+        // adjust for arg cells, which come first.
+        const int nvars = ncellvars + (int)PyDict_GET_SIZE(umd->u_varnames);
+        int *sorted = PyMem_RawCalloc(nvars, sizeof(int));
+        if (sorted == NULL) {
+            PyErr_NoMemory();
+            return ERROR;
+        }
+        for (int i = 0; i < ncellvars; i++) {
+            sorted[fixed[i]] = i + 1;
+        }
+        for (int i = 0, ncellsused = 0; ncellsused < ncellvars; i++) {
+            int oldindex = sorted[i] - 1;
+            if (oldindex == -1) {
+                continue;
+            }
+            cfg_instr make_cell = {
+                .i_opcode = MAKE_CELL,
+                // This will get fixed in offset_derefs().
+                .i_oparg = oldindex,
+                .i_loc = NO_LOCATION,
+                .i_target = NULL,
+            };
+            if (basicblock_insert_instruction(entryblock, ncellsused, &make_cell) < 0) {
+                PyMem_RawFree(sorted);
+                return ERROR;
+            }
+            ncellsused += 1;
+        }
+        PyMem_RawFree(sorted);
+    }
+
+    if (nfreevars) {
+        cfg_instr copy_frees = {
+            .i_opcode = COPY_FREE_VARS,
+            .i_oparg = nfreevars,
+            .i_loc = NO_LOCATION,
+            .i_target = NULL,
+        };
+        RETURN_IF_ERROR(basicblock_insert_instruction(entryblock, 0, &copy_frees));
+    }
+
+    return SUCCESS;
+}
+
+static int
+fix_cell_offsets(_PyCompile_CodeUnitMetadata *umd, basicblock *entryblock, int *fixedmap)
+{
+    int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
+    int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
+    int nfreevars = (int)PyDict_GET_SIZE(umd->u_freevars);
+    int noffsets = ncellvars + nfreevars;
+
+    // First deal with duplicates (arg cells).
+    int numdropped = 0;
+    for (int i = 0; i < noffsets ; i++) {
+        if (fixedmap[i] == i + nlocals) {
+            fixedmap[i] -= numdropped;
+        }
+        else {
+            // It was a duplicate (cell/arg).
+            numdropped += 1;
+        }
+    }
+
+    // Then update offsets, either relative to locals or by cell2arg.
+    for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
+        for (int i = 0; i < b->b_iused; i++) {
+            cfg_instr *inst = &b->b_instr[i];
+            // This is called before extended args are generated.
+            assert(inst->i_opcode != EXTENDED_ARG);
+            int oldoffset = inst->i_oparg;
+            switch(inst->i_opcode) {
+                case MAKE_CELL:
+                case LOAD_CLOSURE:
+                case LOAD_DEREF:
+                case STORE_DEREF:
+                case DELETE_DEREF:
+                case LOAD_FROM_DICT_OR_DEREF:
+                    assert(oldoffset >= 0);
+                    assert(oldoffset < noffsets);
+                    assert(fixedmap[oldoffset] >= 0);
+                    inst->i_oparg = fixedmap[oldoffset];
+            }
+        }
+    }
+
+    return numdropped;
+}
+
+static int
+prepare_localsplus(_PyCompile_CodeUnitMetadata *umd, cfg_builder *g, int code_flags)
+{
+    assert(PyDict_GET_SIZE(umd->u_varnames) < INT_MAX);
+    assert(PyDict_GET_SIZE(umd->u_cellvars) < INT_MAX);
+    assert(PyDict_GET_SIZE(umd->u_freevars) < INT_MAX);
+    int nlocals = (int)PyDict_GET_SIZE(umd->u_varnames);
+    int ncellvars = (int)PyDict_GET_SIZE(umd->u_cellvars);
+    int nfreevars = (int)PyDict_GET_SIZE(umd->u_freevars);
+    assert(INT_MAX - nlocals - ncellvars > 0);
+    assert(INT_MAX - nlocals - ncellvars - nfreevars > 0);
+    int nlocalsplus = nlocals + ncellvars + nfreevars;
+    int* cellfixedoffsets = build_cellfixedoffsets(umd);
+    if (cellfixedoffsets == NULL) {
+        return ERROR;
+    }
+
+    // This must be called before fix_cell_offsets().
+    if (insert_prefix_instructions(umd, g->g_entryblock, cellfixedoffsets, nfreevars, code_flags)) {
+        PyMem_Free(cellfixedoffsets);
+        return ERROR;
+    }
+
+    int numdropped = fix_cell_offsets(umd, g->g_entryblock, cellfixedoffsets);
+    PyMem_Free(cellfixedoffsets);  // At this point we're done with it.
+    cellfixedoffsets = NULL;
+    if (numdropped < 0) {
+        return ERROR;
+    }
+
+    nlocalsplus -= numdropped;
+    return nlocalsplus;
+}
+
+int
+_PyCfg_ToInstructionSequence(cfg_builder *g, _PyCompile_InstructionSequence *seq)
+{
+    int lbl = 0;
+    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
+        b->b_label = (jump_target_label){lbl};
+        lbl += b->b_iused;
+    }
+    for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
+        RETURN_IF_ERROR(_PyCompile_InstructionSequence_UseLabel(seq, b->b_label.id));
+        for (int i = 0; i < b->b_iused; i++) {
+            cfg_instr *instr = &b->b_instr[i];
+            if (OPCODE_HAS_JUMP(instr->i_opcode)) {
+                instr->i_oparg = instr->i_target->b_label.id;
+            }
+            RETURN_IF_ERROR(
+                _PyCompile_InstructionSequence_Addop(
+                    seq, instr->i_opcode, instr->i_oparg, instr->i_loc));
+
+            _PyCompile_ExceptHandlerInfo *hi = &seq->s_instrs[seq->s_used-1].i_except_handler_info;
+            if (instr->i_except != NULL) {
+                hi->h_label = instr->i_except->b_label.id;
+                hi->h_startdepth = instr->i_except->b_startdepth;
+                hi->h_preserve_lasti = instr->i_except->b_preserve_lasti;
+            }
+            else {
+                hi->h_label = -1;
+            }
+        }
+    }
+    return SUCCESS;
+}
+
+
+int
+_PyCfg_OptimizedCfgToInstructionSequence(cfg_builder *g,
+                                     _PyCompile_CodeUnitMetadata *umd, int code_flags,
+                                     int *stackdepth, int *nlocalsplus,
+                                     _PyCompile_InstructionSequence *seq)
+{
+    *stackdepth = calculate_stackdepth(g);
+    if (*stackdepth < 0) {
+        return ERROR;
+    }
+
+    /* prepare_localsplus adds instructions for generators that push
+     * and pop an item on the stack. This assertion makes sure there
+     * is space on the stack for that.
+     * It should always be true, because a generator must have at
+     * least one expression or call to INTRINSIC_STOPITERATION_ERROR,
+     * which requires stackspace.
+     */
+    assert(!(IS_GENERATOR(code_flags) && *stackdepth == 0));
+
+    *nlocalsplus = prepare_localsplus(umd, g, code_flags);
+    if (*nlocalsplus < 0) {
+        return ERROR;
+    }
+
+    convert_pseudo_ops(g->g_entryblock);
+
+    /* Order of basic blocks must have been determined by now */
+
+    RETURN_IF_ERROR(normalize_jumps(g));
+    assert(no_redundant_jumps(g));
+
+    /* Can't modify the bytecode after computing jump offsets. */
+    if (_PyCfg_ToInstructionSequence(g, seq) < 0) {
+        return ERROR;
+    }
+
+    return SUCCESS;
+}
diff --git a/Python/formatter_unicode.c b/Python/formatter_unicode.c
index 38e5f69bfb4289..6af589f966a502 100644
--- a/Python/formatter_unicode.c
+++ b/Python/formatter_unicode.c
@@ -982,7 +982,7 @@ format_long_internal(PyObject *value, const InternalFormatSpec *format,
 
         /* Do the hard part, converting to a string in a given base */
         tmp = _PyLong_Format(value, base);
-        if (tmp == NULL || PyUnicode_READY(tmp) == -1)
+        if (tmp == NULL)
             goto done;
 
         inumeric_chars = 0;
diff --git a/Python/frame.c b/Python/frame.c
index d792b92fa57560..2865b2eab603c2 100644
--- a/Python/frame.c
+++ b/Python/frame.c
@@ -14,7 +14,7 @@ _PyFrame_Traverse(_PyInterpreterFrame *frame, visitproc visit, void *arg)
     Py_VISIT(frame->frame_obj);
     Py_VISIT(frame->f_locals);
     Py_VISIT(frame->f_funcobj);
-    Py_VISIT(frame->f_code);
+    Py_VISIT(_PyFrame_GetCode(frame));
    /* locals */
     PyObject **locals = _PyFrame_GetLocalsArray(frame);
     int i = 0;
@@ -31,7 +31,7 @@ _PyFrame_MakeAndSetFrameObject(_PyInterpreterFrame *frame)
     assert(frame->frame_obj == NULL);
     PyObject *exc = PyErr_GetRaisedException();
 
-    PyFrameObject *f = _PyFrame_New_NoTrack(frame->f_code);
+    PyFrameObject *f = _PyFrame_New_NoTrack(_PyFrame_GetCode(frame));
     if (f == NULL) {
         Py_XDECREF(exc);
         return NULL;
@@ -65,7 +65,7 @@ _PyFrame_MakeAndSetFrameObject(_PyInterpreterFrame *frame)
 void
 _PyFrame_Copy(_PyInterpreterFrame *src, _PyInterpreterFrame *dest)
 {
-    assert(src->stacktop >= src->f_code->co_nlocalsplus);
+    assert(src->stacktop >= _PyFrame_GetCode(src)->co_nlocalsplus);
     Py_ssize_t size = ((char*)&src->localsplus[src->stacktop]) - (char *)src;
     memcpy(dest, src, size);
     // Don't leave a dangling pointer to the old frame when creating generators
@@ -81,7 +81,7 @@ take_ownership(PyFrameObject *f, _PyInterpreterFrame *frame)
     assert(frame->owner != FRAME_OWNED_BY_FRAME_OBJECT);
     assert(frame->owner != FRAME_CLEARED);
     Py_ssize_t size = ((char*)&frame->localsplus[frame->stacktop]) - (char *)frame;
-    Py_INCREF(frame->f_code);
+    Py_INCREF(_PyFrame_GetCode(frame));
     memcpy((_PyInterpreterFrame *)f->_f_frame_data, frame, size);
     frame = (_PyInterpreterFrame *)f->_f_frame_data;
     f->f_frame = frame;
@@ -89,8 +89,8 @@ take_ownership(PyFrameObject *f, _PyInterpreterFrame *frame)
     if (_PyFrame_IsIncomplete(frame)) {
         // This may be a newly-created generator or coroutine frame. Since it's
         // dead anyways, just pretend that the first RESUME ran:
-        PyCodeObject *code = frame->f_code;
-        frame->prev_instr = _PyCode_CODE(code) + code->_co_firsttraceable;
+        PyCodeObject *code = _PyFrame_GetCode(frame);
+        frame->instr_ptr = _PyCode_CODE(code) + code->_co_firsttraceable + 1;
     }
     assert(!_PyFrame_IsIncomplete(frame));
     assert(f->f_back == NULL);
@@ -124,7 +124,7 @@ _PyFrame_ClearExceptCode(_PyInterpreterFrame *frame)
         _PyFrame_GetGenerator(frame)->gi_frame_state == FRAME_CLEARED);
     // GH-99729: Clearing this frame can expose the stack (via finalizers). It's
     // crucial that this frame has been unlinked, and is no longer visible:
-    assert(_PyThreadState_GET()->cframe->current_frame != frame);
+    assert(_PyThreadState_GET()->current_frame != frame);
     if (frame->frame_obj) {
         PyFrameObject *f = frame->frame_obj;
         frame->frame_obj = NULL;
@@ -146,10 +146,10 @@ _PyFrame_ClearExceptCode(_PyInterpreterFrame *frame)
 
 /* Unstable API functions */
 
-PyCodeObject *
+PyObject *
 PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame)
 {
-    PyCodeObject *code = frame->f_code;
+    PyObject *code = frame->f_executable;
     Py_INCREF(code);
     return code;
 }
@@ -164,5 +164,13 @@ int
 PyUnstable_InterpreterFrame_GetLine(_PyInterpreterFrame *frame)
 {
     int addr = _PyInterpreterFrame_LASTI(frame) * sizeof(_Py_CODEUNIT);
-    return PyCode_Addr2Line(frame->f_code, addr);
+    return PyCode_Addr2Line(_PyFrame_GetCode(frame), addr);
 }
+
+const PyTypeObject *const PyUnstable_ExecutableKinds[PyUnstable_EXECUTABLE_KINDS+1] = {
+    [PyUnstable_EXECUTABLE_KIND_SKIP] = &_PyNone_Type,
+    [PyUnstable_EXECUTABLE_KIND_PY_FUNCTION] = &PyCode_Type,
+    [PyUnstable_EXECUTABLE_KIND_BUILTIN_FUNCTION] = &PyMethod_Type,
+    [PyUnstable_EXECUTABLE_KIND_METHOD_DESCRIPTOR] = &PyMethodDescr_Type,
+    [PyUnstable_EXECUTABLE_KINDS] = NULL,
+};
diff --git a/Python/frozen.c b/Python/frozen.c
index 6b977710e6e342..77f51a7f750965 100644
--- a/Python/frozen.c
+++ b/Python/frozen.c
@@ -80,7 +80,6 @@ extern PyObject *_Py_get__sitebuiltins_toplevel(void);
 extern PyObject *_Py_get_genericpath_toplevel(void);
 extern PyObject *_Py_get_ntpath_toplevel(void);
 extern PyObject *_Py_get_posixpath_toplevel(void);
-extern PyObject *_Py_get_posixpath_toplevel(void);
 extern PyObject *_Py_get_os_toplevel(void);
 extern PyObject *_Py_get_site_toplevel(void);
 extern PyObject *_Py_get_stat_toplevel(void);
@@ -88,59 +87,54 @@ extern PyObject *_Py_get_importlib_util_toplevel(void);
 extern PyObject *_Py_get_importlib_machinery_toplevel(void);
 extern PyObject *_Py_get_runpy_toplevel(void);
 extern PyObject *_Py_get___hello___toplevel(void);
-extern PyObject *_Py_get___hello___toplevel(void);
-extern PyObject *_Py_get___hello___toplevel(void);
-extern PyObject *_Py_get___hello___toplevel(void);
-extern PyObject *_Py_get___phello___toplevel(void);
 extern PyObject *_Py_get___phello___toplevel(void);
 extern PyObject *_Py_get___phello___ham_toplevel(void);
-extern PyObject *_Py_get___phello___ham_toplevel(void);
 extern PyObject *_Py_get___phello___ham_eggs_toplevel(void);
 extern PyObject *_Py_get___phello___spam_toplevel(void);
 extern PyObject *_Py_get_frozen_only_toplevel(void);
 /* End extern declarations */
 
 static const struct _frozen bootstrap_modules[] = {
-    {"_frozen_importlib", _Py_M__importlib__bootstrap, (int)sizeof(_Py_M__importlib__bootstrap), false, GET_CODE(importlib__bootstrap)},
-    {"_frozen_importlib_external", _Py_M__importlib__bootstrap_external, (int)sizeof(_Py_M__importlib__bootstrap_external), false, GET_CODE(importlib__bootstrap_external)},
-    {"zipimport", _Py_M__zipimport, (int)sizeof(_Py_M__zipimport), false, GET_CODE(zipimport)},
+    {"_frozen_importlib", _Py_M__importlib__bootstrap, (int)sizeof(_Py_M__importlib__bootstrap), false},
+    {"_frozen_importlib_external", _Py_M__importlib__bootstrap_external, (int)sizeof(_Py_M__importlib__bootstrap_external), false},
+    {"zipimport", _Py_M__zipimport, (int)sizeof(_Py_M__zipimport), false},
     {0, 0, 0} /* bootstrap sentinel */
 };
 static const struct _frozen stdlib_modules[] = {
     /* stdlib - startup, without site (python -S) */
-    {"abc", _Py_M__abc, (int)sizeof(_Py_M__abc), false, GET_CODE(abc)},
-    {"codecs", _Py_M__codecs, (int)sizeof(_Py_M__codecs), false, GET_CODE(codecs)},
-    {"io", _Py_M__io, (int)sizeof(_Py_M__io), false, GET_CODE(io)},
+    {"abc", _Py_M__abc, (int)sizeof(_Py_M__abc), false},
+    {"codecs", _Py_M__codecs, (int)sizeof(_Py_M__codecs), false},
+    {"io", _Py_M__io, (int)sizeof(_Py_M__io), false},
 
     /* stdlib - startup, with site */
-    {"_collections_abc", _Py_M___collections_abc, (int)sizeof(_Py_M___collections_abc), false, GET_CODE(_collections_abc)},
-    {"_sitebuiltins", _Py_M___sitebuiltins, (int)sizeof(_Py_M___sitebuiltins), false, GET_CODE(_sitebuiltins)},
-    {"genericpath", _Py_M__genericpath, (int)sizeof(_Py_M__genericpath), false, GET_CODE(genericpath)},
-    {"ntpath", _Py_M__ntpath, (int)sizeof(_Py_M__ntpath), false, GET_CODE(ntpath)},
-    {"posixpath", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath), false, GET_CODE(posixpath)},
-    {"os.path", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath), false, GET_CODE(posixpath)},
-    {"os", _Py_M__os, (int)sizeof(_Py_M__os), false, GET_CODE(os)},
-    {"site", _Py_M__site, (int)sizeof(_Py_M__site), false, GET_CODE(site)},
-    {"stat", _Py_M__stat, (int)sizeof(_Py_M__stat), false, GET_CODE(stat)},
+    {"_collections_abc", _Py_M___collections_abc, (int)sizeof(_Py_M___collections_abc), false},
+    {"_sitebuiltins", _Py_M___sitebuiltins, (int)sizeof(_Py_M___sitebuiltins), false},
+    {"genericpath", _Py_M__genericpath, (int)sizeof(_Py_M__genericpath), false},
+    {"ntpath", _Py_M__ntpath, (int)sizeof(_Py_M__ntpath), false},
+    {"posixpath", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath), false},
+    {"os.path", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath), false},
+    {"os", _Py_M__os, (int)sizeof(_Py_M__os), false},
+    {"site", _Py_M__site, (int)sizeof(_Py_M__site), false},
+    {"stat", _Py_M__stat, (int)sizeof(_Py_M__stat), false},
 
     /* runpy - run module with -m */
-    {"importlib.util", _Py_M__importlib_util, (int)sizeof(_Py_M__importlib_util), false, GET_CODE(importlib_util)},
-    {"importlib.machinery", _Py_M__importlib_machinery, (int)sizeof(_Py_M__importlib_machinery), false, GET_CODE(importlib_machinery)},
-    {"runpy", _Py_M__runpy, (int)sizeof(_Py_M__runpy), false, GET_CODE(runpy)},
+    {"importlib.util", _Py_M__importlib_util, (int)sizeof(_Py_M__importlib_util), false},
+    {"importlib.machinery", _Py_M__importlib_machinery, (int)sizeof(_Py_M__importlib_machinery), false},
+    {"runpy", _Py_M__runpy, (int)sizeof(_Py_M__runpy), false},
     {0, 0, 0} /* stdlib sentinel */
 };
 static const struct _frozen test_modules[] = {
-    {"__hello__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false, GET_CODE(__hello__)},
-    {"__hello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false, GET_CODE(__hello__)},
-    {"__phello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), true, GET_CODE(__hello__)},
-    {"__phello_alias__.spam", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false, GET_CODE(__hello__)},
-    {"__phello__", _Py_M____phello__, (int)sizeof(_Py_M____phello__), true, GET_CODE(__phello__)},
-    {"__phello__.__init__", _Py_M____phello__, (int)sizeof(_Py_M____phello__), false, GET_CODE(__phello__)},
-    {"__phello__.ham", _Py_M____phello___ham, (int)sizeof(_Py_M____phello___ham), true, GET_CODE(__phello___ham)},
-    {"__phello__.ham.__init__", _Py_M____phello___ham, (int)sizeof(_Py_M____phello___ham), false, GET_CODE(__phello___ham)},
-    {"__phello__.ham.eggs", _Py_M____phello___ham_eggs, (int)sizeof(_Py_M____phello___ham_eggs), false, GET_CODE(__phello___ham_eggs)},
-    {"__phello__.spam", _Py_M____phello___spam, (int)sizeof(_Py_M____phello___spam), false, GET_CODE(__phello___spam)},
-    {"__hello_only__", _Py_M__frozen_only, (int)sizeof(_Py_M__frozen_only), false, GET_CODE(frozen_only)},
+    {"__hello__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false},
+    {"__hello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false},
+    {"__phello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), true},
+    {"__phello_alias__.spam", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false},
+    {"__phello__", _Py_M____phello__, (int)sizeof(_Py_M____phello__), true},
+    {"__phello__.__init__", _Py_M____phello__, (int)sizeof(_Py_M____phello__), false},
+    {"__phello__.ham", _Py_M____phello___ham, (int)sizeof(_Py_M____phello___ham), true},
+    {"__phello__.ham.__init__", _Py_M____phello___ham, (int)sizeof(_Py_M____phello___ham), false},
+    {"__phello__.ham.eggs", _Py_M____phello___ham_eggs, (int)sizeof(_Py_M____phello___ham_eggs), false},
+    {"__phello__.spam", _Py_M____phello___spam, (int)sizeof(_Py_M____phello___spam), false},
+    {"__hello_only__", _Py_M__frozen_only, (int)sizeof(_Py_M__frozen_only), false},
     {0, 0, 0} /* test sentinel */
 };
 const struct _frozen *_PyImport_FrozenBootstrap = bootstrap_modules;
diff --git a/Python/frozenmain.c b/Python/frozenmain.c
index f8be165f7671df..3ce9476c9ad46c 100644
--- a/Python/frozenmain.c
+++ b/Python/frozenmain.c
@@ -1,8 +1,13 @@
 /* Python interpreter main program for frozen scripts */
 
 #include "Python.h"
-#include "pycore_runtime.h"  // _PyRuntime_Initialize()
-#include <locale.h>
+#include "pycore_pystate.h"       // _Py_GetConfig()
+#include "pycore_runtime.h"       // _PyRuntime_Initialize()
+
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // isatty()
+#endif
+
 
 #ifdef MS_WINDOWS
 extern void PyWinFreeze_ExeInit(void);
diff --git a/Python/future.c b/Python/future.c
index d56f7330964684..0dbc7ede20f324 100644
--- a/Python/future.c
+++ b/Python/future.c
@@ -1,5 +1,6 @@
 #include "Python.h"
 #include "pycore_ast.h"           // _PyAST_GetDocString()
+#include "pycore_unicodeobject.h" // _PyUnicode_EqualToASCIIString()
 
 #define UNDEFINED_FUTURE_FEATURE "future feature %.100s is not defined"
 
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h
index 014a69ff7e9615..24243ecfb5b8df 100644
--- a/Python/generated_cases.c.h
+++ b/Python/generated_cases.c.h
@@ -1,639 +1,517 @@
-// This file is generated by Tools/cases_generator/generate_cases.py
+// This file is generated by Tools/cases_generator/tier1_generator.py
 // from:
-//   Python/bytecodes.c
+//   ['./Python/bytecodes.c']
 // Do not edit!
 
-        TARGET(NOP) {
-            DISPATCH();
-        }
+#ifdef TIER_TWO
+    #error "This file is for Tier 1 only"
+#endif
+#define TIER_ONE 1
 
-        TARGET(RESUME) {
-            #line 137 "Python/bytecodes.c"
-            assert(tstate->cframe == &cframe);
-            assert(frame == cframe.current_frame);
-            /* Possibly combine this with eval breaker */
-            if (frame->f_code->_co_instrumentation_version != tstate->interp->monitoring_version) {
-                int err = _Py_Instrument(frame->f_code, tstate->interp);
-                if (err) goto error;
-                next_instr--;
+
+        TARGET(BEFORE_ASYNC_WITH) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BEFORE_ASYNC_WITH);
+            PyObject *mgr;
+            PyObject *exit;
+            PyObject *res;
+            mgr = stack_pointer[-1];
+            PyObject *enter = _PyObject_LookupSpecial(mgr, &_Py_ID(__aenter__));
+            if (enter == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "asynchronous context manager protocol",
+                                  Py_TYPE(mgr)->tp_name);
+                }
+                GOTO_ERROR(error);
+            }
+            exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__aexit__));
+            if (exit == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "asynchronous context manager protocol "
+                                  "(missed __aexit__ method)",
+                                  Py_TYPE(mgr)->tp_name);
+                }
+                Py_DECREF(enter);
+                GOTO_ERROR(error);
             }
-            else if (_Py_atomic_load_relaxed_int32(eval_breaker) && oparg < 2) {
-                goto handle_eval_breaker;
+            Py_DECREF(mgr);
+            res = _PyObject_CallNoArgsTstate(tstate, enter);
+            Py_DECREF(enter);
+            if (res == NULL) {
+                Py_DECREF(exit);
+                if (true) goto pop_1_error;
             }
-            #line 24 "Python/generated_cases.c.h"
+            stack_pointer[-1] = exit;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_RESUME) {
-            #line 151 "Python/bytecodes.c"
-            /* Possible performance enhancement:
-             *   We need to check the eval breaker anyway, can we
-             * combine the instrument verison check and the eval breaker test?
+        TARGET(BEFORE_WITH) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BEFORE_WITH);
+            PyObject *mgr;
+            PyObject *exit;
+            PyObject *res;
+            mgr = stack_pointer[-1];
+            /* pop the context manager, push its __exit__ and the
+             * value returned from calling its __enter__
              */
-            if (frame->f_code->_co_instrumentation_version != tstate->interp->monitoring_version) {
-                if (_Py_Instrument(frame->f_code, tstate->interp)) {
-                    goto error;
+            PyObject *enter = _PyObject_LookupSpecial(mgr, &_Py_ID(__enter__));
+            if (enter == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "context manager protocol",
+                                  Py_TYPE(mgr)->tp_name);
                 }
-                next_instr--;
+                GOTO_ERROR(error);
             }
-            else {
-                _PyFrame_SetStackPointer(frame, stack_pointer);
-                int err = _Py_call_instrumentation(
-                        tstate, oparg > 0, frame, next_instr-1);
-                stack_pointer = _PyFrame_GetStackPointer(frame);
-                if (err) goto error;
-                if (frame->prev_instr != next_instr-1) {
-                    /* Instrumentation has jumped */
-                    next_instr = frame->prev_instr;
-                    DISPATCH();
-                }
-                if (_Py_atomic_load_relaxed_int32(eval_breaker) && oparg < 2) {
-                    goto handle_eval_breaker;
+            exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__exit__));
+            if (exit == NULL) {
+                if (!_PyErr_Occurred(tstate)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object does not support the "
+                                  "context manager protocol "
+                                  "(missed __exit__ method)",
+                                  Py_TYPE(mgr)->tp_name);
                 }
+                Py_DECREF(enter);
+                GOTO_ERROR(error);
             }
-            #line 55 "Python/generated_cases.c.h"
-            DISPATCH();
-        }
-
-        TARGET(LOAD_CLOSURE) {
-            PyObject *value;
-            #line 179 "Python/bytecodes.c"
-            /* We keep LOAD_CLOSURE so that the bytecode stays more readable. */
-            value = GETLOCAL(oparg);
-            if (value == NULL) goto unbound_local_error;
-            Py_INCREF(value);
-            #line 66 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_FAST_CHECK) {
-            PyObject *value;
-            #line 186 "Python/bytecodes.c"
-            value = GETLOCAL(oparg);
-            if (value == NULL) goto unbound_local_error;
-            Py_INCREF(value);
-            #line 78 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_FAST) {
-            PyObject *value;
-            #line 192 "Python/bytecodes.c"
-            value = GETLOCAL(oparg);
-            assert(value != NULL);
-            Py_INCREF(value);
-            #line 90 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_FAST_AND_CLEAR) {
-            PyObject *value;
-            #line 198 "Python/bytecodes.c"
-            value = GETLOCAL(oparg);
-            // do not use SETLOCAL here, it decrefs the old value
-            GETLOCAL(oparg) = NULL;
-            #line 102 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_CONST) {
-            PREDICTED(LOAD_CONST);
-            PyObject *value;
-            #line 204 "Python/bytecodes.c"
-            value = GETITEM(frame->f_code->co_consts, oparg);
-            Py_INCREF(value);
-            #line 114 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(STORE_FAST) {
-            PyObject *value = stack_pointer[-1];
-            #line 209 "Python/bytecodes.c"
-            SETLOCAL(oparg, value);
-            #line 124 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+            Py_DECREF(mgr);
+            res = _PyObject_CallNoArgsTstate(tstate, enter);
+            Py_DECREF(enter);
+            if (res == NULL) {
+                Py_DECREF(exit);
+                if (true) goto pop_1_error;
+            }
+            stack_pointer[-1] = exit;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(LOAD_FAST__LOAD_FAST) {
-            PyObject *_tmp_1;
-            PyObject *_tmp_2;
+        TARGET(BINARY_OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP);
+            PREDICTED(BINARY_OP);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *rhs;
+            PyObject *lhs;
+            PyObject *res;
+            // _SPECIALIZE_BINARY_OP
+            rhs = stack_pointer[-1];
+            lhs = stack_pointer[-2];
             {
-                PyObject *value;
-                #line 192 "Python/bytecodes.c"
-                value = GETLOCAL(oparg);
-                assert(value != NULL);
-                Py_INCREF(value);
-                #line 138 "Python/generated_cases.c.h"
-                _tmp_2 = value;
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_BinaryOp(lhs, rhs, next_instr, oparg, LOCALS_ARRAY);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(BINARY_OP, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
+                assert(NB_ADD <= oparg);
+                assert(oparg <= NB_INPLACE_XOR);
             }
-            oparg = (next_instr++)->op.arg;
+            // _BINARY_OP
             {
-                PyObject *value;
-                #line 192 "Python/bytecodes.c"
-                value = GETLOCAL(oparg);
-                assert(value != NULL);
-                Py_INCREF(value);
-                #line 148 "Python/generated_cases.c.h"
-                _tmp_1 = value;
+                assert(_PyEval_BinaryOps[oparg]);
+                res = _PyEval_BinaryOps[oparg](lhs, rhs);
+                Py_DECREF(lhs);
+                Py_DECREF(rhs);
+                if (res == NULL) goto pop_2_error;
             }
-            STACK_GROW(2);
-            stack_pointer[-1] = _tmp_1;
-            stack_pointer[-2] = _tmp_2;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(LOAD_FAST__LOAD_CONST) {
-            PyObject *_tmp_1;
-            PyObject *_tmp_2;
+        TARGET(BINARY_OP_ADD_FLOAT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_ADD_FLOAT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _GUARD_BOTH_FLOAT
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
             {
-                PyObject *value;
-                #line 192 "Python/bytecodes.c"
-                value = GETLOCAL(oparg);
-                assert(value != NULL);
-                Py_INCREF(value);
-                #line 166 "Python/generated_cases.c.h"
-                _tmp_2 = value;
+                DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
             }
-            oparg = (next_instr++)->op.arg;
+            // _BINARY_OP_ADD_FLOAT
             {
-                PyObject *value;
-                #line 204 "Python/bytecodes.c"
-                value = GETITEM(frame->f_code->co_consts, oparg);
-                Py_INCREF(value);
-                #line 175 "Python/generated_cases.c.h"
-                _tmp_1 = value;
+                STAT_INC(BINARY_OP, hit);
+                double dres =
+                ((PyFloatObject *)left)->ob_fval +
+                ((PyFloatObject *)right)->ob_fval;
+                DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
             }
-            STACK_GROW(2);
-            stack_pointer[-1] = _tmp_1;
-            stack_pointer[-2] = _tmp_2;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(STORE_FAST__LOAD_FAST) {
-            PyObject *_tmp_1 = stack_pointer[-1];
+        TARGET(BINARY_OP_ADD_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_ADD_INT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _GUARD_BOTH_INT
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
             {
-                PyObject *value = _tmp_1;
-                #line 209 "Python/bytecodes.c"
-                SETLOCAL(oparg, value);
-                #line 190 "Python/generated_cases.c.h"
+                DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
             }
-            oparg = (next_instr++)->op.arg;
+            // _BINARY_OP_ADD_INT
             {
-                PyObject *value;
-                #line 192 "Python/bytecodes.c"
-                value = GETLOCAL(oparg);
-                assert(value != NULL);
-                Py_INCREF(value);
-                #line 199 "Python/generated_cases.c.h"
-                _tmp_1 = value;
+                STAT_INC(BINARY_OP, hit);
+                res = _PyLong_Add((PyLongObject *)left, (PyLongObject *)right);
+                _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+                _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+                if (res == NULL) goto pop_2_error;
             }
-            stack_pointer[-1] = _tmp_1;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(STORE_FAST__STORE_FAST) {
-            PyObject *_tmp_1 = stack_pointer[-1];
-            PyObject *_tmp_2 = stack_pointer[-2];
+        TARGET(BINARY_OP_ADD_UNICODE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_ADD_UNICODE);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _GUARD_BOTH_UNICODE
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
             {
-                PyObject *value = _tmp_1;
-                #line 209 "Python/bytecodes.c"
-                SETLOCAL(oparg, value);
-                #line 213 "Python/generated_cases.c.h"
+                DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyUnicode_CheckExact(right), BINARY_OP);
             }
-            oparg = (next_instr++)->op.arg;
+            // _BINARY_OP_ADD_UNICODE
             {
-                PyObject *value = _tmp_2;
-                #line 209 "Python/bytecodes.c"
-                SETLOCAL(oparg, value);
-                #line 220 "Python/generated_cases.c.h"
+                STAT_INC(BINARY_OP, hit);
+                res = PyUnicode_Concat(left, right);
+                _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
+                _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
+                if (res == NULL) goto pop_2_error;
             }
-            STACK_SHRINK(2);
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(LOAD_CONST__LOAD_FAST) {
-            PyObject *_tmp_1;
-            PyObject *_tmp_2;
+        TARGET(BINARY_OP_INPLACE_ADD_UNICODE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_INPLACE_ADD_UNICODE);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            // _GUARD_BOTH_UNICODE
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
             {
-                PyObject *value;
-                #line 204 "Python/bytecodes.c"
-                value = GETITEM(frame->f_code->co_consts, oparg);
-                Py_INCREF(value);
-                #line 234 "Python/generated_cases.c.h"
-                _tmp_2 = value;
+                DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyUnicode_CheckExact(right), BINARY_OP);
             }
-            oparg = (next_instr++)->op.arg;
+            // _BINARY_OP_INPLACE_ADD_UNICODE
             {
-                PyObject *value;
-                #line 192 "Python/bytecodes.c"
-                value = GETLOCAL(oparg);
-                assert(value != NULL);
-                Py_INCREF(value);
-                #line 244 "Python/generated_cases.c.h"
-                _tmp_1 = value;
-            }
-            STACK_GROW(2);
-            stack_pointer[-1] = _tmp_1;
-            stack_pointer[-2] = _tmp_2;
+                assert(next_instr->op.code == STORE_FAST);
+                PyObject **target_local = &GETLOCAL(next_instr->op.arg);
+                DEOPT_IF(*target_local != left, BINARY_OP);
+                STAT_INC(BINARY_OP, hit);
+                /* Handle `left = left + right` or `left += right` for str.
+                 *
+                 * When possible, extend `left` in place rather than
+                 * allocating a new PyUnicodeObject. This attempts to avoid
+                 * quadratic behavior when one neglects to use str.join().
+                 *
+                 * If `left` has only two references remaining (one from
+                 * the stack, one in the locals), DECREFing `left` leaves
+                 * only the locals reference, so PyUnicode_Append knows
+                 * that the string is safe to mutate.
+                 */
+                assert(Py_REFCNT(left) >= 2);
+                _Py_DECREF_NO_DEALLOC(left);
+                PyUnicode_Append(target_local, right);
+                _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
+                if (*target_local == NULL) goto pop_2_error;
+                // The STORE_FAST is already done.
+                assert(next_instr->op.code == STORE_FAST);
+                SKIP_OVER(1);
+            }
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(POP_TOP) {
-            PyObject *value = stack_pointer[-1];
-            #line 219 "Python/bytecodes.c"
-            #line 256 "Python/generated_cases.c.h"
-            Py_DECREF(value);
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-
-        TARGET(PUSH_NULL) {
+        TARGET(BINARY_OP_MULTIPLY_FLOAT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_MULTIPLY_FLOAT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
             PyObject *res;
-            #line 223 "Python/bytecodes.c"
-            res = NULL;
-            #line 266 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
-            DISPATCH();
-        }
-
-        TARGET(END_FOR) {
-            PyObject *_tmp_1 = stack_pointer[-1];
-            PyObject *_tmp_2 = stack_pointer[-2];
+            // _GUARD_BOTH_FLOAT
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
             {
-                PyObject *value = _tmp_1;
-                #line 219 "Python/bytecodes.c"
-                #line 278 "Python/generated_cases.c.h"
-                Py_DECREF(value);
+                DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
             }
+            // _BINARY_OP_MULTIPLY_FLOAT
             {
-                PyObject *value = _tmp_2;
-                #line 219 "Python/bytecodes.c"
-                #line 284 "Python/generated_cases.c.h"
-                Py_DECREF(value);
+                STAT_INC(BINARY_OP, hit);
+                double dres =
+                ((PyFloatObject *)left)->ob_fval *
+                ((PyFloatObject *)right)->ob_fval;
+                DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
             }
-            STACK_SHRINK(2);
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_END_FOR) {
-            PyObject *value = stack_pointer[-1];
-            PyObject *receiver = stack_pointer[-2];
-            #line 229 "Python/bytecodes.c"
-            /* Need to create a fake StopIteration error here,
-             * to conform to PEP 380 */
-            if (PyGen_Check(receiver)) {
-                PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, next_instr-1)) {
-                    goto error;
-                }
-                PyErr_SetRaisedException(NULL);
+        TARGET(BINARY_OP_MULTIPLY_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_MULTIPLY_INT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _GUARD_BOTH_INT
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            {
+                DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
             }
-            #line 304 "Python/generated_cases.c.h"
-            Py_DECREF(receiver);
-            Py_DECREF(value);
-            STACK_SHRINK(2);
+            // _BINARY_OP_MULTIPLY_INT
+            {
+                STAT_INC(BINARY_OP, hit);
+                res = _PyLong_Multiply((PyLongObject *)left, (PyLongObject *)right);
+                _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+                _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+                if (res == NULL) goto pop_2_error;
+            }
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(END_SEND) {
-            PyObject *value = stack_pointer[-1];
-            PyObject *receiver = stack_pointer[-2];
-            #line 242 "Python/bytecodes.c"
-            Py_DECREF(receiver);
-            #line 316 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = value;
+        TARGET(BINARY_OP_SUBTRACT_FLOAT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_SUBTRACT_FLOAT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _GUARD_BOTH_FLOAT
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            {
+                DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
+            }
+            // _BINARY_OP_SUBTRACT_FLOAT
+            {
+                STAT_INC(BINARY_OP, hit);
+                double dres =
+                ((PyFloatObject *)left)->ob_fval -
+                ((PyFloatObject *)right)->ob_fval;
+                DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dres, res);
+            }
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_END_SEND) {
-            PyObject *value = stack_pointer[-1];
-            PyObject *receiver = stack_pointer[-2];
-            #line 246 "Python/bytecodes.c"
-            if (PyGen_Check(receiver) || PyCoro_CheckExact(receiver)) {
-                PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, next_instr-1)) {
-                    goto error;
-                }
-                PyErr_SetRaisedException(NULL);
+        TARGET(BINARY_OP_SUBTRACT_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_OP_SUBTRACT_INT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _GUARD_BOTH_INT
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            {
+                DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
+                DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
             }
-            Py_DECREF(receiver);
-            #line 334 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = value;
+            // _BINARY_OP_SUBTRACT_INT
+            {
+                STAT_INC(BINARY_OP, hit);
+                res = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
+                _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+                _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+                if (res == NULL) goto pop_2_error;
+            }
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(UNARY_NEGATIVE) {
-            PyObject *value = stack_pointer[-1];
+        TARGET(BINARY_SLICE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BINARY_SLICE);
+            PyObject *stop;
+            PyObject *start;
+            PyObject *container;
             PyObject *res;
-            #line 257 "Python/bytecodes.c"
-            res = PyNumber_Negative(value);
-            #line 345 "Python/generated_cases.c.h"
-            Py_DECREF(value);
-            #line 259 "Python/bytecodes.c"
-            if (res == NULL) goto pop_1_error;
-            #line 349 "Python/generated_cases.c.h"
-            stack_pointer[-1] = res;
+            stop = stack_pointer[-1];
+            start = stack_pointer[-2];
+            container = stack_pointer[-3];
+            PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
+            // Can't use ERROR_IF() here, because we haven't
+            // DECREF'ed container yet, and we still own slice.
+            if (slice == NULL) {
+                res = NULL;
+            }
+            else {
+                res = PyObject_GetItem(container, slice);
+                Py_DECREF(slice);
+            }
+            Py_DECREF(container);
+            if (res == NULL) goto pop_3_error;
+            stack_pointer[-3] = res;
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(UNARY_NOT) {
-            PyObject *value = stack_pointer[-1];
+        TARGET(BINARY_SUBSCR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_SUBSCR);
+            PREDICTED(BINARY_SUBSCR);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *sub;
+            PyObject *container;
             PyObject *res;
-            #line 263 "Python/bytecodes.c"
-            int err = PyObject_IsTrue(value);
-            #line 359 "Python/generated_cases.c.h"
-            Py_DECREF(value);
-            #line 265 "Python/bytecodes.c"
-            if (err < 0) goto pop_1_error;
-            if (err == 0) {
-                res = Py_True;
+            // _SPECIALIZE_BINARY_SUBSCR
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_BinarySubscr(container, sub, next_instr);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(BINARY_SUBSCR, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            else {
-                res = Py_False;
+            // _BINARY_SUBSCR
+            {
+                res = PyObject_GetItem(container, sub);
+                Py_DECREF(container);
+                Py_DECREF(sub);
+                if (res == NULL) goto pop_2_error;
             }
-            Py_INCREF(res);
-            #line 370 "Python/generated_cases.c.h"
-            stack_pointer[-1] = res;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(UNARY_INVERT) {
-            PyObject *value = stack_pointer[-1];
+        TARGET(BINARY_SUBSCR_DICT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_SUBSCR_DICT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_SUBSCR == 1, "incorrect cache size");
+            PyObject *sub;
+            PyObject *dict;
             PyObject *res;
-            #line 276 "Python/bytecodes.c"
-            res = PyNumber_Invert(value);
-            #line 380 "Python/generated_cases.c.h"
-            Py_DECREF(value);
-            #line 278 "Python/bytecodes.c"
-            if (res == NULL) goto pop_1_error;
-            #line 384 "Python/generated_cases.c.h"
-            stack_pointer[-1] = res;
+            sub = stack_pointer[-1];
+            dict = stack_pointer[-2];
+            DEOPT_IF(!PyDict_CheckExact(dict), BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            int rc = PyDict_GetItemRef(dict, sub, &res);
+            if (rc == 0) {
+                _PyErr_SetKeyError(sub);
+            }
+            Py_DECREF(dict);
+            Py_DECREF(sub);
+            if (rc <= 0) goto pop_2_error;
+            // not found or error
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(BINARY_OP_MULTIPLY_INT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *prod;
-            #line 295 "Python/bytecodes.c"
-            DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            prod = _PyLong_Multiply((PyLongObject *)left, (PyLongObject *)right);
-            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
-            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            if (prod == NULL) goto pop_2_error;
-            #line 401 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = prod;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_MULTIPLY_FLOAT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *prod;
-            #line 305 "Python/bytecodes.c"
-            DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            double dprod = ((PyFloatObject *)left)->ob_fval *
-                ((PyFloatObject *)right)->ob_fval;
-            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dprod, prod);
-            #line 419 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = prod;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_SUBTRACT_INT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *sub;
-            #line 314 "Python/bytecodes.c"
-            DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            sub = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
-            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
-            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            if (sub == NULL) goto pop_2_error;
-            #line 438 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = sub;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_SUBTRACT_FLOAT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *sub;
-            #line 324 "Python/bytecodes.c"
-            DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
-            DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            double dsub = ((PyFloatObject *)left)->ob_fval - ((PyFloatObject *)right)->ob_fval;
-            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dsub, sub);
-            #line 455 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = sub;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_ADD_UNICODE) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *res;
-            #line 332 "Python/bytecodes.c"
-            DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            res = PyUnicode_Concat(left, right);
-            _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
-            _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
-            if (res == NULL) goto pop_2_error;
-            #line 474 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_INPLACE_ADD_UNICODE) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            #line 348 "Python/bytecodes.c"
-            DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            _Py_CODEUNIT true_next = next_instr[INLINE_CACHE_ENTRIES_BINARY_OP];
-            assert(true_next.op.code == STORE_FAST ||
-                   true_next.op.code == STORE_FAST__LOAD_FAST);
-            PyObject **target_local = &GETLOCAL(true_next.op.arg);
-            DEOPT_IF(*target_local != left, BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            /* Handle `left = left + right` or `left += right` for str.
-             *
-             * When possible, extend `left` in place rather than
-             * allocating a new PyUnicodeObject. This attempts to avoid
-             * quadratic behavior when one neglects to use str.join().
-             *
-             * If `left` has only two references remaining (one from
-             * the stack, one in the locals), DECREFing `left` leaves
-             * only the locals reference, so PyUnicode_Append knows
-             * that the string is safe to mutate.
-             */
-            assert(Py_REFCNT(left) >= 2);
-            _Py_DECREF_NO_DEALLOC(left);
-            PyUnicode_Append(target_local, right);
-            _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
-            if (*target_local == NULL) goto pop_2_error;
-            // The STORE_FAST is already done.
-            JUMPBY(INLINE_CACHE_ENTRIES_BINARY_OP + 1);
-            #line 511 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_ADD_FLOAT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *sum;
-            #line 377 "Python/bytecodes.c"
-            DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            double dsum = ((PyFloatObject *)left)->ob_fval +
-                ((PyFloatObject *)right)->ob_fval;
-            DECREF_INPUTS_AND_REUSE_FLOAT(left, right, dsum, sum);
-            #line 527 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = sum;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_OP_ADD_INT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *sum;
-            #line 386 "Python/bytecodes.c"
-            DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
-            DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
-            STAT_INC(BINARY_OP, hit);
-            sum = _PyLong_Add((PyLongObject *)left, (PyLongObject *)right);
-            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
-            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            if (sum == NULL) goto pop_2_error;
-            #line 546 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = sum;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_SUBSCR) {
-            PREDICTED(BINARY_SUBSCR);
+        TARGET(BINARY_SUBSCR_GETITEM) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_SUBSCR_GETITEM);
             static_assert(INLINE_CACHE_ENTRIES_BINARY_SUBSCR == 1, "incorrect cache size");
-            PyObject *sub = stack_pointer[-1];
-            PyObject *container = stack_pointer[-2];
-            PyObject *res;
-            #line 404 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PyBinarySubscrCache *cache = (_PyBinarySubscrCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_BinarySubscr(container, sub, next_instr);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(BINARY_SUBSCR, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            res = PyObject_GetItem(container, sub);
-            #line 571 "Python/generated_cases.c.h"
-            Py_DECREF(container);
-            Py_DECREF(sub);
-            #line 416 "Python/bytecodes.c"
-            if (res == NULL) goto pop_2_error;
-            #line 576 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(BINARY_SLICE) {
-            PyObject *stop = stack_pointer[-1];
-            PyObject *start = stack_pointer[-2];
-            PyObject *container = stack_pointer[-3];
-            PyObject *res;
-            #line 420 "Python/bytecodes.c"
-            PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
-            // Can't use ERROR_IF() here, because we haven't
-            // DECREF'ed container yet, and we still own slice.
-            if (slice == NULL) {
-                res = NULL;
-            }
-            else {
-                res = PyObject_GetItem(container, slice);
-                Py_DECREF(slice);
-            }
-            Py_DECREF(container);
-            if (res == NULL) goto pop_3_error;
-            #line 601 "Python/generated_cases.c.h"
+            PyObject *sub;
+            PyObject *container;
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
+            DEOPT_IF(tstate->interp->eval_frame, BINARY_SUBSCR);
+            PyTypeObject *tp = Py_TYPE(container);
+            DEOPT_IF(!PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE), BINARY_SUBSCR);
+            PyHeapTypeObject *ht = (PyHeapTypeObject *)tp;
+            PyObject *cached = ht->_spec_cache.getitem;
+            DEOPT_IF(cached == NULL, BINARY_SUBSCR);
+            assert(PyFunction_Check(cached));
+            PyFunctionObject *getitem = (PyFunctionObject *)cached;
+            uint32_t cached_version = ht->_spec_cache.getitem_version;
+            DEOPT_IF(getitem->func_version != cached_version, BINARY_SUBSCR);
+            PyCodeObject *code = (PyCodeObject *)getitem->func_code;
+            assert(code->co_argcount == 2);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            Py_INCREF(getitem);
+            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, getitem, 2);
             STACK_SHRINK(2);
-            stack_pointer[-1] = res;
-            DISPATCH();
-        }
-
-        TARGET(STORE_SLICE) {
-            PyObject *stop = stack_pointer[-1];
-            PyObject *start = stack_pointer[-2];
-            PyObject *container = stack_pointer[-3];
-            PyObject *v = stack_pointer[-4];
-            #line 435 "Python/bytecodes.c"
-            PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
-            int err;
-            if (slice == NULL) {
-                err = 1;
-            }
-            else {
-                err = PyObject_SetItem(container, slice, v);
-                Py_DECREF(slice);
-            }
-            Py_DECREF(v);
-            Py_DECREF(container);
-            if (err) goto pop_4_error;
-            #line 625 "Python/generated_cases.c.h"
-            STACK_SHRINK(4);
-            DISPATCH();
+            new_frame->localsplus[0] = container;
+            new_frame->localsplus[1] = sub;
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            DISPATCH_INLINED(new_frame);
         }
 
         TARGET(BINARY_SUBSCR_LIST_INT) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *list = stack_pointer[-2];
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_SUBSCR_LIST_INT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_SUBSCR == 1, "incorrect cache size");
+            PyObject *sub;
+            PyObject *list;
             PyObject *res;
-            #line 450 "Python/bytecodes.c"
+            sub = stack_pointer[-1];
+            list = stack_pointer[-2];
             DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
             DEOPT_IF(!PyList_CheckExact(list), BINARY_SUBSCR);
-
             // Deopt unless 0 <= sub < PyList_Size(list)
             DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
             Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
@@ -644,21 +522,50 @@
             Py_INCREF(res);
             _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
             Py_DECREF(list);
-            #line 648 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 1;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(BINARY_SUBSCR_STR_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_SUBSCR_STR_INT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_SUBSCR == 1, "incorrect cache size");
+            PyObject *sub;
+            PyObject *str;
+            PyObject *res;
+            sub = stack_pointer[-1];
+            str = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
+            DEOPT_IF(!PyUnicode_CheckExact(str), BINARY_SUBSCR);
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            DEOPT_IF(PyUnicode_GET_LENGTH(str) <= index, BINARY_SUBSCR);
+            // Specialize for reading an ASCII character from any string:
+            Py_UCS4 c = PyUnicode_READ_CHAR(str, index);
+            DEOPT_IF(Py_ARRAY_LENGTH(_Py_SINGLETON(strings).ascii) <= c, BINARY_SUBSCR);
+            STAT_INC(BINARY_SUBSCR, hit);
+            res = (PyObject*)&_Py_SINGLETON(strings).ascii[c];
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(str);
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
         TARGET(BINARY_SUBSCR_TUPLE_INT) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *tuple = stack_pointer[-2];
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(BINARY_SUBSCR_TUPLE_INT);
+            static_assert(INLINE_CACHE_ENTRIES_BINARY_SUBSCR == 1, "incorrect cache size");
+            PyObject *sub;
+            PyObject *tuple;
             PyObject *res;
-            #line 466 "Python/bytecodes.c"
+            sub = stack_pointer[-1];
+            tuple = stack_pointer[-2];
             DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
             DEOPT_IF(!PyTuple_CheckExact(tuple), BINARY_SUBSCR);
-
             // Deopt unless 0 <= sub < PyTuple_Size(list)
             DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), BINARY_SUBSCR);
             Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
@@ -669,372 +576,2073 @@
             Py_INCREF(res);
             _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
             Py_DECREF(tuple);
-            #line 673 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 1;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(BINARY_SUBSCR_DICT) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *dict = stack_pointer[-2];
-            PyObject *res;
-            #line 482 "Python/bytecodes.c"
-            DEOPT_IF(!PyDict_CheckExact(dict), BINARY_SUBSCR);
-            STAT_INC(BINARY_SUBSCR, hit);
-            res = PyDict_GetItemWithError(dict, sub);
-            if (res == NULL) {
-                if (!_PyErr_Occurred(tstate)) {
-                    _PyErr_SetKeyError(sub);
-                }
-            #line 692 "Python/generated_cases.c.h"
-                Py_DECREF(dict);
-                Py_DECREF(sub);
-            #line 490 "Python/bytecodes.c"
-                if (true) goto pop_2_error;
-            }
-            Py_INCREF(res);  // Do this before DECREF'ing dict, sub
-            #line 699 "Python/generated_cases.c.h"
-            Py_DECREF(dict);
-            Py_DECREF(sub);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
+        TARGET(BUILD_CONST_KEY_MAP) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(BUILD_CONST_KEY_MAP);
+            PyObject *keys;
+            PyObject **values;
+            PyObject *map;
+            keys = stack_pointer[-1];
+            values = &stack_pointer[-1 - oparg];
+            if (!PyTuple_CheckExact(keys) ||
+                PyTuple_GET_SIZE(keys) != (Py_ssize_t)oparg) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "bad BUILD_CONST_KEY_MAP keys argument");
+                GOTO_ERROR(error);  // Pop the keys and values.
+            }
+            map = _PyDict_FromItems(
+                                    &PyTuple_GET_ITEM(keys, 0), 1,
+                                    values, 1, oparg);
+            for (int _i = oparg; --_i >= 0;) {
+                Py_DECREF(values[_i]);
+            }
+            Py_DECREF(keys);
+            if (map == NULL) { stack_pointer += -1 - oparg; goto error; }
+            stack_pointer[-1 - oparg] = map;
+            stack_pointer += -oparg;
             DISPATCH();
         }
 
-        TARGET(BINARY_SUBSCR_GETITEM) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *container = stack_pointer[-2];
-            #line 497 "Python/bytecodes.c"
-            DEOPT_IF(tstate->interp->eval_frame, BINARY_SUBSCR);
-            PyTypeObject *tp = Py_TYPE(container);
-            DEOPT_IF(!PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE), BINARY_SUBSCR);
-            PyHeapTypeObject *ht = (PyHeapTypeObject *)tp;
-            PyObject *cached = ht->_spec_cache.getitem;
-            DEOPT_IF(cached == NULL, BINARY_SUBSCR);
-            assert(PyFunction_Check(cached));
-            PyFunctionObject *getitem = (PyFunctionObject *)cached;
-            uint32_t cached_version = ht->_spec_cache.getitem_version;
-            DEOPT_IF(getitem->func_version != cached_version, BINARY_SUBSCR);
-            PyCodeObject *code = (PyCodeObject *)getitem->func_code;
-            assert(code->co_argcount == 2);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), BINARY_SUBSCR);
-            STAT_INC(BINARY_SUBSCR, hit);
-            Py_INCREF(getitem);
-            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, getitem, 2);
-            STACK_SHRINK(2);
-            new_frame->localsplus[0] = container;
-            new_frame->localsplus[1] = sub;
-            JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
-            frame->return_offset = 0;
-            DISPATCH_INLINED(new_frame);
-            #line 734 "Python/generated_cases.c.h"
+        TARGET(BUILD_LIST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BUILD_LIST);
+            PyObject **values;
+            PyObject *list;
+            values = &stack_pointer[-oparg];
+            list = _PyList_FromArraySteal(values, oparg);
+            if (list == NULL) { stack_pointer += -oparg; goto error; }
+            stack_pointer[-oparg] = list;
+            stack_pointer += 1 - oparg;
+            DISPATCH();
         }
 
-        TARGET(LIST_APPEND) {
-            PyObject *v = stack_pointer[-1];
-            PyObject *list = stack_pointer[-(2 + (oparg-1))];
-            #line 522 "Python/bytecodes.c"
-            if (_PyList_AppendTakeRef((PyListObject *)list, v) < 0) goto pop_1_error;
-            #line 742 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            PREDICT(JUMP_BACKWARD);
+        TARGET(BUILD_MAP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BUILD_MAP);
+            PyObject **values;
+            PyObject *map;
+            values = &stack_pointer[-oparg*2];
+            map = _PyDict_FromItems(
+                                    values, 2,
+                                    values+1, 2,
+                                    oparg);
+            for (int _i = oparg*2; --_i >= 0;) {
+                Py_DECREF(values[_i]);
+            }
+            if (map == NULL) { stack_pointer += -oparg*2; goto error; }
+            stack_pointer[-oparg*2] = map;
+            stack_pointer += 1 - oparg*2;
             DISPATCH();
         }
 
-        TARGET(SET_ADD) {
-            PyObject *v = stack_pointer[-1];
-            PyObject *set = stack_pointer[-(2 + (oparg-1))];
-            #line 527 "Python/bytecodes.c"
-            int err = PySet_Add(set, v);
-            #line 753 "Python/generated_cases.c.h"
-            Py_DECREF(v);
-            #line 529 "Python/bytecodes.c"
-            if (err) goto pop_1_error;
-            #line 757 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            PREDICT(JUMP_BACKWARD);
+        TARGET(BUILD_SET) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BUILD_SET);
+            PyObject **values;
+            PyObject *set;
+            values = &stack_pointer[-oparg];
+            set = PySet_New(NULL);
+            if (set == NULL)
+            GOTO_ERROR(error);
+            int err = 0;
+            for (int i = 0; i < oparg; i++) {
+                PyObject *item = values[i];
+                if (err == 0)
+                err = PySet_Add(set, item);
+                Py_DECREF(item);
+            }
+            if (err != 0) {
+                Py_DECREF(set);
+                if (true) { stack_pointer += -oparg; goto error; }
+            }
+            stack_pointer[-oparg] = set;
+            stack_pointer += 1 - oparg;
             DISPATCH();
         }
 
-        TARGET(STORE_SUBSCR) {
-            PREDICTED(STORE_SUBSCR);
-            static_assert(INLINE_CACHE_ENTRIES_STORE_SUBSCR == 1, "incorrect cache size");
-            PyObject *sub = stack_pointer[-1];
-            PyObject *container = stack_pointer[-2];
-            PyObject *v = stack_pointer[-3];
-            uint16_t counter = read_u16(&next_instr[0].cache);
-            #line 540 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
-                next_instr--;
-                _Py_Specialize_StoreSubscr(container, sub, next_instr);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(STORE_SUBSCR, deferred);
-            _PyStoreSubscrCache *cache = (_PyStoreSubscrCache *)next_instr;
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #else
-            (void)counter;  // Unused.
-            #endif  /* ENABLE_SPECIALIZATION */
-            /* container[sub] = v */
-            int err = PyObject_SetItem(container, sub, v);
-            #line 785 "Python/generated_cases.c.h"
-            Py_DECREF(v);
-            Py_DECREF(container);
-            Py_DECREF(sub);
-            #line 555 "Python/bytecodes.c"
-            if (err) goto pop_3_error;
-            #line 791 "Python/generated_cases.c.h"
-            STACK_SHRINK(3);
+        TARGET(BUILD_SLICE) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(BUILD_SLICE);
+            PyObject *step = NULL;
+            PyObject *stop;
+            PyObject *start;
+            PyObject *slice;
+        if (oparg == 3) { step = stack_pointer[-(((oparg == 3) ? 1 : 0))]; }
+            stop = stack_pointer[-1 - (((oparg == 3) ? 1 : 0))];
+            start = stack_pointer[-2 - (((oparg == 3) ? 1 : 0))];
+            slice = PySlice_New(start, stop, step);
+            Py_DECREF(start);
+            Py_DECREF(stop);
+            Py_XDECREF(step);
+            if (slice == NULL) { stack_pointer += -2 - (((oparg == 3) ? 1 : 0)); goto error; }
+            stack_pointer[-2 - (((oparg == 3) ? 1 : 0))] = slice;
+            stack_pointer += -1 - (((oparg == 3) ? 1 : 0));
             DISPATCH();
         }
 
-        TARGET(STORE_SUBSCR_LIST_INT) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *list = stack_pointer[-2];
-            PyObject *value = stack_pointer[-3];
-            #line 559 "Python/bytecodes.c"
-            DEOPT_IF(!PyLong_CheckExact(sub), STORE_SUBSCR);
-            DEOPT_IF(!PyList_CheckExact(list), STORE_SUBSCR);
-
-            // Ensure nonnegative, zero-or-one-digit ints.
-            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), STORE_SUBSCR);
-            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
-            // Ensure index < len(list)
-            DEOPT_IF(index >= PyList_GET_SIZE(list), STORE_SUBSCR);
-            STAT_INC(STORE_SUBSCR, hit);
+        TARGET(BUILD_STRING) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BUILD_STRING);
+            PyObject **pieces;
+            PyObject *str;
+            pieces = &stack_pointer[-oparg];
+            str = _PyUnicode_JoinArray(&_Py_STR(empty), pieces, oparg);
+            for (int _i = oparg; --_i >= 0;) {
+                Py_DECREF(pieces[_i]);
+            }
+            if (str == NULL) { stack_pointer += -oparg; goto error; }
+            stack_pointer[-oparg] = str;
+            stack_pointer += 1 - oparg;
+            DISPATCH();
+        }
+
+        TARGET(BUILD_TUPLE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(BUILD_TUPLE);
+            PyObject **values;
+            PyObject *tup;
+            values = &stack_pointer[-oparg];
+            tup = _PyTuple_FromArraySteal(values, oparg);
+            if (tup == NULL) { stack_pointer += -oparg; goto error; }
+            stack_pointer[-oparg] = tup;
+            stack_pointer += 1 - oparg;
+            DISPATCH();
+        }
+
+        TARGET(CACHE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CACHE);
+            assert(0 && "Executing a cache.");
+            Py_UNREACHABLE();
+        }
+
+        TARGET(CALL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL);
+            PREDICTED(CALL);
+            _Py_CODEUNIT *this_instr = next_instr - 4;
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            // _SPECIALIZE_CALL
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_Call(callable, next_instr, oparg + (self_or_null != NULL));
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(CALL, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
+            }
+            // _CALL
+            {
+                // oparg counts all of the args, but *not* self:
+                int total_args = oparg;
+                if (self_or_null != NULL) {
+                    args--;
+                    total_args++;
+                }
+                else if (Py_TYPE(callable) == &PyMethod_Type) {
+                    args--;
+                    total_args++;
+                    PyObject *self = ((PyMethodObject *)callable)->im_self;
+                    args[0] = Py_NewRef(self);
+                    PyObject *method = ((PyMethodObject *)callable)->im_func;
+                    args[-1] = Py_NewRef(method);
+                    Py_DECREF(callable);
+                    callable = method;
+                }
+                // Check if the call can be inlined or not
+                if (Py_TYPE(callable) == &PyFunction_Type &&
+                    tstate->interp->eval_frame == NULL &&
+                    ((PyFunctionObject *)callable)->vectorcall == _PyFunction_Vectorcall)
+                {
+                    int code_flags = ((PyCodeObject*)PyFunction_GET_CODE(callable))->co_flags;
+                    PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(callable));
+                    _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit(
+                        tstate, (PyFunctionObject *)callable, locals,
+                        args, total_args, NULL
+                    );
+                    // Manipulate stack directly since we leave using DISPATCH_INLINED().
+                    STACK_SHRINK(oparg + 2);
+                    // The frame has stolen all the arguments from the stack,
+                    // so there is no need to clean them up.
+                    if (new_frame == NULL) {
+                        GOTO_ERROR(error);
+                    }
+                    frame->return_offset = (uint16_t)(next_instr - this_instr);
+                    DISPATCH_INLINED(new_frame);
+                }
+                /* Callable is not a normal Python function */
+                res = PyObject_Vectorcall(
+                                      callable, args,
+                                      total_args | PY_VECTORCALL_ARGUMENTS_OFFSET,
+                                      NULL);
+                if (opcode == INSTRUMENTED_CALL) {
+                    PyObject *arg = total_args == 0 ?
+                    &_PyInstrumentation_MISSING : args[0];
+                    if (res == NULL) {
+                        _Py_call_instrumentation_exc2(
+                            tstate, PY_MONITORING_EVENT_C_RAISE,
+                            frame, this_instr, callable, arg);
+                    }
+                    else {
+                        int err = _Py_call_instrumentation_2args(
+                            tstate, PY_MONITORING_EVENT_C_RETURN,
+                            frame, this_instr, callable, arg);
+                        if (err < 0) {
+                            Py_CLEAR(res);
+                        }
+                    }
+                }
+                assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+                Py_DECREF(callable);
+                for (int i = 0; i < total_args; i++) {
+                    Py_DECREF(args[i]);
+                }
+                if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_ALLOC_AND_ENTER_INIT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_ALLOC_AND_ENTER_INIT);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            args = &stack_pointer[-oparg];
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* This instruction does the following:
+             * 1. Creates the object (by calling ``object.__new__``)
+             * 2. Pushes a shim frame to the frame stack (to cleanup after ``__init__``)
+             * 3. Pushes the frame for ``__init__`` to the frame stack
+             * */
+            _PyCallCache *cache = (_PyCallCache *)&this_instr[1];
+            DEOPT_IF(null != NULL, CALL);
+            DEOPT_IF(!PyType_Check(callable), CALL);
+            PyTypeObject *tp = (PyTypeObject *)callable;
+            DEOPT_IF(tp->tp_version_tag != read_u32(cache->func_version), CALL);
+            PyHeapTypeObject *cls = (PyHeapTypeObject *)callable;
+            PyFunctionObject *init = (PyFunctionObject *)cls->_spec_cache.init;
+            PyCodeObject *code = (PyCodeObject *)init->func_code;
+            DEOPT_IF(code->co_argcount != oparg+1, CALL);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize + _Py_InitCleanup.co_framesize), CALL);
+            STAT_INC(CALL, hit);
+            PyObject *self = _PyType_NewManagedObject(tp);
+            if (self == NULL) {
+                GOTO_ERROR(error);
+            }
+            Py_DECREF(tp);
+            _PyInterpreterFrame *shim = _PyFrame_PushTrampolineUnchecked(
+                tstate, (PyCodeObject *)&_Py_InitCleanup, 1);
+            assert(_PyCode_CODE((PyCodeObject *)shim->f_executable)[0].op.code == EXIT_INIT_CHECK);
+            /* Push self onto stack of shim */
+            Py_INCREF(self);
+            shim->localsplus[0] = self;
+            Py_INCREF(init);
+            _PyInterpreterFrame *init_frame = _PyFrame_PushUnchecked(tstate, init, oparg+1);
+            /* Copy self followed by args to __init__ frame */
+            init_frame->localsplus[0] = self;
+            for (int i = 0; i < oparg; i++) {
+                init_frame->localsplus[i+1] = args[i];
+            }
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            STACK_SHRINK(oparg+2);
+            _PyFrame_SetStackPointer(frame, stack_pointer);
+            /* Link frames */
+            init_frame->previous = shim;
+            shim->previous = frame;
+            frame = tstate->current_frame = init_frame;
+            CALL_STAT_INC(inlined_py_calls);
+            /* Account for pushing the extra frame.
+             * We don't check recursion depth here,
+             * as it will be checked after start_frame */
+            tstate->py_recursion_remaining--;
+            goto start_frame;
+        }
+
+        TARGET(CALL_BOUND_METHOD_EXACT_ARGS) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_BOUND_METHOD_EXACT_ARGS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject *null;
+            PyObject *callable;
+            PyObject *func;
+            PyObject *self;
+            PyObject *self_or_null;
+            PyObject **args;
+            _PyInterpreterFrame *new_frame;
+            /* Skip 1 cache entry */
+            // _CHECK_PEP_523
+            {
+                DEOPT_IF(tstate->interp->eval_frame, CALL);
+            }
+            // _CHECK_CALL_BOUND_METHOD_EXACT_ARGS
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            {
+                DEOPT_IF(null != NULL, CALL);
+                DEOPT_IF(Py_TYPE(callable) != &PyMethod_Type, CALL);
+            }
+            // _INIT_CALL_BOUND_METHOD_EXACT_ARGS
+            {
+                STAT_INC(CALL, hit);
+                self = Py_NewRef(((PyMethodObject *)callable)->im_self);
+                stack_pointer[-1 - oparg] = self;  // Patch stack as it is used by _INIT_CALL_PY_EXACT_ARGS
+                func = Py_NewRef(((PyMethodObject *)callable)->im_func);
+                stack_pointer[-2 - oparg] = func;  // This is used by CALL, upon deoptimization
+                Py_DECREF(callable);
+            }
+            // _CHECK_FUNCTION_EXACT_ARGS
+            self_or_null = self;
+            callable = func;
+            {
+                uint32_t func_version = read_u32(&this_instr[2].cache);
+                DEOPT_IF(!PyFunction_Check(callable), CALL);
+                PyFunctionObject *func = (PyFunctionObject *)callable;
+                DEOPT_IF(func->func_version != func_version, CALL);
+                PyCodeObject *code = (PyCodeObject *)func->func_code;
+                DEOPT_IF(code->co_argcount != oparg + (self_or_null != NULL), CALL);
+            }
+            // _CHECK_STACK_SPACE
+            {
+                PyFunctionObject *func = (PyFunctionObject *)callable;
+                PyCodeObject *code = (PyCodeObject *)func->func_code;
+                DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
+                DEOPT_IF(tstate->py_recursion_remaining <= 1, CALL);
+            }
+            // _INIT_CALL_PY_EXACT_ARGS
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            {
+                int argcount = oparg;
+                if (self_or_null != NULL) {
+                    args--;
+                    argcount++;
+                }
+                STAT_INC(CALL, hit);
+                PyFunctionObject *func = (PyFunctionObject *)callable;
+                new_frame = _PyFrame_PushUnchecked(tstate, func, argcount);
+                for (int i = 0; i < argcount; i++) {
+                    new_frame->localsplus[i] = args[i];
+                }
+            }
+            // _SAVE_RETURN_OFFSET
+            {
+                #if TIER_ONE
+                frame->return_offset = (uint16_t)(next_instr - this_instr);
+                #endif
+                #if TIER_TWO
+                frame->return_offset = oparg;
+                #endif
+            }
+            // _PUSH_FRAME
+            {
+                // Write it out explicitly because it's subtly different.
+                // Eventually this should be the only occurrence of this code.
+                assert(tstate->interp->eval_frame == NULL);
+                stack_pointer += -2 - oparg;
+                _PyFrame_SetStackPointer(frame, stack_pointer);
+                new_frame->previous = frame;
+                CALL_STAT_INC(inlined_py_calls);
+                frame = tstate->current_frame = new_frame;
+                tstate->py_recursion_remaining--;
+                LOAD_SP();
+                LOAD_IP(0);
+                #if LLTRACE && TIER_ONE
+                lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+                if (lltrace < 0) {
+                    goto exit_unwind;
+                }
+                #endif
+            }
+            stack_pointer += (((0) ? 1 : 0));
+            DISPATCH();
+        }
+
+        TARGET(CALL_BUILTIN_CLASS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_BUILTIN_CLASS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(!PyType_Check(callable), CALL);
+            PyTypeObject *tp = (PyTypeObject *)callable;
+            DEOPT_IF(tp->tp_vectorcall == NULL, CALL);
+            STAT_INC(CALL, hit);
+            res = tp->tp_vectorcall((PyObject *)tp, args, total_args, NULL);
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(tp);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_BUILTIN_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_BUILTIN_FAST);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* Builtin METH_FASTCALL functions, without keywords */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_FASTCALL, CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
+            /* res = func(self, args, nargs) */
+            res = ((_PyCFunctionFast)(void(*)(void))cfunc)(
+                PyCFunction_GET_SELF(callable),
+                args,
+                total_args);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            /* Not deopting because this doesn't mean our optimization was
+               wrong. `res` can be NULL for valid reasons. Eg. getattr(x,
+               'invalid'). In those cases an exception is set, so we must
+               handle it.
+             */
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_BUILTIN_FAST_WITH_KEYWORDS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_BUILTIN_FAST_WITH_KEYWORDS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* Builtin METH_FASTCALL | METH_KEYWORDS functions */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != (METH_FASTCALL | METH_KEYWORDS), CALL);
+            STAT_INC(CALL, hit);
+            /* res = func(self, args, nargs, kwnames) */
+            _PyCFunctionFastWithKeywords cfunc =
+            (_PyCFunctionFastWithKeywords)(void(*)(void))
+            PyCFunction_GET_FUNCTION(callable);
+            res = cfunc(PyCFunction_GET_SELF(callable), args, total_args, NULL);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_BUILTIN_O) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_BUILTIN_O);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* Builtin METH_O functions */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 1, CALL);
+            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
+            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_O, CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
+            // This is slower but CPython promises to check all non-vectorcall
+            // function calls.
+            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
+                GOTO_ERROR(error);
+            }
+            PyObject *arg = args[0];
+            res = _PyCFunction_TrampolineCall(cfunc, PyCFunction_GET_SELF(callable), arg);
+            _Py_LeaveRecursiveCallTstate(tstate);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(arg);
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_FUNCTION_EX) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CALL_FUNCTION_EX);
+            PREDICTED(CALL_FUNCTION_EX);
+            _Py_CODEUNIT *this_instr = next_instr - 1;
+            PyObject *kwargs = NULL;
+            PyObject *callargs;
+            PyObject *func;
+            PyObject *result;
+        if (oparg & 1) { kwargs = stack_pointer[-((oparg & 1))]; }
+            callargs = stack_pointer[-1 - ((oparg & 1))];
+            func = stack_pointer[-3 - ((oparg & 1))];
+            // DICT_MERGE is called before this opcode if there are kwargs.
+            // It converts all dict subtypes in kwargs into regular dicts.
+            assert(kwargs == NULL || PyDict_CheckExact(kwargs));
+            if (!PyTuple_CheckExact(callargs)) {
+                if (check_args_iterable(tstate, func, callargs) < 0) {
+                    GOTO_ERROR(error);
+                }
+                PyObject *tuple = PySequence_Tuple(callargs);
+                if (tuple == NULL) {
+                    GOTO_ERROR(error);
+                }
+                Py_SETREF(callargs, tuple);
+            }
+            assert(PyTuple_CheckExact(callargs));
+            EVAL_CALL_STAT_INC_IF_FUNCTION(EVAL_CALL_FUNCTION_EX, func);
+            if (opcode == INSTRUMENTED_CALL_FUNCTION_EX &&
+                !PyFunction_Check(func) && !PyMethod_Check(func)
+            ) {
+                PyObject *arg = PyTuple_GET_SIZE(callargs) > 0 ?
+                PyTuple_GET_ITEM(callargs, 0) : Py_None;
+                int err = _Py_call_instrumentation_2args(
+                    tstate, PY_MONITORING_EVENT_CALL,
+                    frame, this_instr, func, arg);
+                if (err) GOTO_ERROR(error);
+                result = PyObject_Call(func, callargs, kwargs);
+                if (result == NULL) {
+                    _Py_call_instrumentation_exc2(
+                        tstate, PY_MONITORING_EVENT_C_RAISE,
+                        frame, this_instr, func, arg);
+                }
+                else {
+                    int err = _Py_call_instrumentation_2args(
+                        tstate, PY_MONITORING_EVENT_C_RETURN,
+                        frame, this_instr, func, arg);
+                    if (err < 0) {
+                        Py_CLEAR(result);
+                    }
+                }
+            }
+            else {
+                if (Py_TYPE(func) == &PyFunction_Type &&
+                    tstate->interp->eval_frame == NULL &&
+                    ((PyFunctionObject *)func)->vectorcall == _PyFunction_Vectorcall) {
+                    assert(PyTuple_CheckExact(callargs));
+                    Py_ssize_t nargs = PyTuple_GET_SIZE(callargs);
+                    int code_flags = ((PyCodeObject *)PyFunction_GET_CODE(func))->co_flags;
+                    PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(func));
+                    _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit_Ex(tstate,
+                        (PyFunctionObject *)func, locals,
+                        nargs, callargs, kwargs);
+                    // Need to manually shrink the stack since we exit with DISPATCH_INLINED.
+                    STACK_SHRINK(oparg + 3);
+                    if (new_frame == NULL) {
+                        GOTO_ERROR(error);
+                    }
+                    assert(next_instr - this_instr == 1);
+                    frame->return_offset = 1;
+                    DISPATCH_INLINED(new_frame);
+                }
+                result = PyObject_Call(func, callargs, kwargs);
+            }
+            Py_DECREF(func);
+            Py_DECREF(callargs);
+            Py_XDECREF(kwargs);
+            assert(PEEK(2 + (oparg & 1)) == NULL);
+            if (result == NULL) { stack_pointer += -3 - ((oparg & 1)); goto error; }
+            stack_pointer[-3 - ((oparg & 1))] = result;
+            stack_pointer += -2 - ((oparg & 1));
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_INTRINSIC_1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CALL_INTRINSIC_1);
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            assert(oparg <= MAX_INTRINSIC_1);
+            res = _PyIntrinsics_UnaryFunctions[oparg].func(tstate, value);
+            Py_DECREF(value);
+            if (res == NULL) goto pop_1_error;
+            stack_pointer[-1] = res;
+            DISPATCH();
+        }
+
+        TARGET(CALL_INTRINSIC_2) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CALL_INTRINSIC_2);
+            PyObject *value1;
+            PyObject *value2;
+            PyObject *res;
+            value1 = stack_pointer[-1];
+            value2 = stack_pointer[-2];
+            assert(oparg <= MAX_INTRINSIC_2);
+            res = _PyIntrinsics_BinaryFunctions[oparg].func(tstate, value2, value1);
+            Py_DECREF(value2);
+            Py_DECREF(value1);
+            if (res == NULL) goto pop_2_error;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(CALL_ISINSTANCE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_ISINSTANCE);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* isinstance(o, o2) */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 2, CALL);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.isinstance, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *cls = args[1];
+            PyObject *inst = args[0];
+            int retval = PyObject_IsInstance(inst, cls);
+            if (retval < 0) {
+                GOTO_ERROR(error);
+            }
+            res = PyBool_FromLong(retval);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(inst);
+            Py_DECREF(cls);
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            DISPATCH();
+        }
+
+        TARGET(CALL_KW) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CALL_KW);
+            PREDICTED(CALL_KW);
+            _Py_CODEUNIT *this_instr = next_instr - 1;
+            PyObject *kwnames;
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            kwnames = stack_pointer[-1];
+            args = &stack_pointer[-1 - oparg];
+            self_or_null = stack_pointer[-2 - oparg];
+            callable = stack_pointer[-3 - oparg];
+            // oparg counts all of the args, but *not* self:
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            if (self_or_null == NULL && Py_TYPE(callable) == &PyMethod_Type) {
+                args--;
+                total_args++;
+                PyObject *self = ((PyMethodObject *)callable)->im_self;
+                args[0] = Py_NewRef(self);
+                PyObject *method = ((PyMethodObject *)callable)->im_func;
+                args[-1] = Py_NewRef(method);
+                Py_DECREF(callable);
+                callable = method;
+            }
+            int positional_args = total_args - (int)PyTuple_GET_SIZE(kwnames);
+            // Check if the call can be inlined or not
+            if (Py_TYPE(callable) == &PyFunction_Type &&
+                tstate->interp->eval_frame == NULL &&
+                ((PyFunctionObject *)callable)->vectorcall == _PyFunction_Vectorcall)
+            {
+                int code_flags = ((PyCodeObject*)PyFunction_GET_CODE(callable))->co_flags;
+                PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(callable));
+                _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit(
+                    tstate, (PyFunctionObject *)callable, locals,
+                    args, positional_args, kwnames
+                );
+                Py_DECREF(kwnames);
+                // Manipulate stack directly since we leave using DISPATCH_INLINED().
+                STACK_SHRINK(oparg + 3);
+                // The frame has stolen all the arguments from the stack,
+                // so there is no need to clean them up.
+                if (new_frame == NULL) {
+                    GOTO_ERROR(error);
+                }
+                assert(next_instr - this_instr == 1);
+                frame->return_offset = 1;
+                DISPATCH_INLINED(new_frame);
+            }
+            /* Callable is not a normal Python function */
+            res = PyObject_Vectorcall(
+                                      callable, args,
+                                      positional_args | PY_VECTORCALL_ARGUMENTS_OFFSET,
+                                      kwnames);
+            if (opcode == INSTRUMENTED_CALL_KW) {
+                PyObject *arg = total_args == 0 ?
+                &_PyInstrumentation_MISSING : args[0];
+                if (res == NULL) {
+                    _Py_call_instrumentation_exc2(
+                        tstate, PY_MONITORING_EVENT_C_RAISE,
+                        frame, this_instr, callable, arg);
+                }
+                else {
+                    int err = _Py_call_instrumentation_2args(
+                        tstate, PY_MONITORING_EVENT_C_RETURN,
+                        frame, this_instr, callable, arg);
+                    if (err < 0) {
+                        Py_CLEAR(res);
+                    }
+                }
+            }
+            Py_DECREF(kwnames);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(callable);
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            if (res == NULL) { stack_pointer += -3 - oparg; goto error; }
+            stack_pointer[-3 - oparg] = res;
+            stack_pointer += -2 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_LEN) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_LEN);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            /* len(o) */
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 1, CALL);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.len, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *arg = args[0];
+            Py_ssize_t len_i = PyObject_Length(arg);
+            if (len_i < 0) {
+                GOTO_ERROR(error);
+            }
+            res = PyLong_FromSsize_t(len_i);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(callable);
+            Py_DECREF(arg);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            DISPATCH();
+        }
+
+        TARGET(CALL_LIST_APPEND) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_LIST_APPEND);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self;
+            PyObject *callable;
+            args = &stack_pointer[-oparg];
+            self = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            PyInterpreterState *interp = tstate->interp;
+            DEOPT_IF(callable != interp->callable_cache.list_append, CALL);
+            assert(self != NULL);
+            DEOPT_IF(!PyList_Check(self), CALL);
+            STAT_INC(CALL, hit);
+            if (_PyList_AppendTakeRef((PyListObject *)self, args[0]) < 0) {
+                goto pop_1_error;  // Since arg is DECREF'ed already
+            }
+            Py_DECREF(self);
+            Py_DECREF(callable);
+            STACK_SHRINK(3);
+            // Skip POP_TOP
+            assert(next_instr->op.code == POP_TOP);
+            SKIP_OVER(1);
+            DISPATCH();
+        }
+
+        TARGET(CALL_METHOD_DESCRIPTOR_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_METHOD_DESCRIPTOR_FAST);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            /* Builtin METH_FASTCALL methods, without keywords */
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != METH_FASTCALL, CALL);
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type), CALL);
+            STAT_INC(CALL, hit);
+            _PyCFunctionFast cfunc =
+            (_PyCFunctionFast)(void(*)(void))meth->ml_meth;
+            int nargs = total_args - 1;
+            res = cfunc(self, args + 1, nargs);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            /* Clear the stack of the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != (METH_FASTCALL|METH_KEYWORDS), CALL);
+            PyTypeObject *d_type = method->d_common.d_type;
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, d_type), CALL);
+            STAT_INC(CALL, hit);
+            int nargs = total_args - 1;
+            _PyCFunctionFastWithKeywords cfunc =
+            (_PyCFunctionFastWithKeywords)(void(*)(void))meth->ml_meth;
+            res = cfunc(self, args + 1, nargs, NULL);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            /* Free the arguments. */
+            for (int i = 0; i < total_args; i++) {
+                Py_DECREF(args[i]);
+            }
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_METHOD_DESCRIPTOR_NOARGS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_METHOD_DESCRIPTOR_NOARGS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 0 || oparg == 1);
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            DEOPT_IF(total_args != 1, CALL);
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type), CALL);
+            DEOPT_IF(meth->ml_flags != METH_NOARGS, CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = meth->ml_meth;
+            // This is slower but CPython promises to check all non-vectorcall
+            // function calls.
+            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
+                GOTO_ERROR(error);
+            }
+            res = _PyCFunction_TrampolineCall(cfunc, self, NULL);
+            _Py_LeaveRecursiveCallTstate(tstate);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(self);
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_METHOD_DESCRIPTOR_O) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_METHOD_DESCRIPTOR_O);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            int total_args = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                total_args++;
+            }
+            PyMethodDescrObject *method = (PyMethodDescrObject *)callable;
+            DEOPT_IF(total_args != 2, CALL);
+            DEOPT_IF(!Py_IS_TYPE(method, &PyMethodDescr_Type), CALL);
+            PyMethodDef *meth = method->d_method;
+            DEOPT_IF(meth->ml_flags != METH_O, CALL);
+            PyObject *arg = args[1];
+            PyObject *self = args[0];
+            DEOPT_IF(!Py_IS_TYPE(self, method->d_common.d_type), CALL);
+            STAT_INC(CALL, hit);
+            PyCFunction cfunc = meth->ml_meth;
+            // This is slower but CPython promises to check all non-vectorcall
+            // function calls.
+            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
+                GOTO_ERROR(error);
+            }
+            res = _PyCFunction_TrampolineCall(cfunc, self, arg);
+            _Py_LeaveRecursiveCallTstate(tstate);
+            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
+            Py_DECREF(self);
+            Py_DECREF(arg);
+            Py_DECREF(callable);
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_PY_EXACT_ARGS) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_PY_EXACT_ARGS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject *self_or_null;
+            PyObject *callable;
+            PyObject **args;
+            _PyInterpreterFrame *new_frame;
+            /* Skip 1 cache entry */
+            // _CHECK_PEP_523
+            {
+                DEOPT_IF(tstate->interp->eval_frame, CALL);
+            }
+            // _CHECK_FUNCTION_EXACT_ARGS
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            {
+                uint32_t func_version = read_u32(&this_instr[2].cache);
+                DEOPT_IF(!PyFunction_Check(callable), CALL);
+                PyFunctionObject *func = (PyFunctionObject *)callable;
+                DEOPT_IF(func->func_version != func_version, CALL);
+                PyCodeObject *code = (PyCodeObject *)func->func_code;
+                DEOPT_IF(code->co_argcount != oparg + (self_or_null != NULL), CALL);
+            }
+            // _CHECK_STACK_SPACE
+            {
+                PyFunctionObject *func = (PyFunctionObject *)callable;
+                PyCodeObject *code = (PyCodeObject *)func->func_code;
+                DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
+                DEOPT_IF(tstate->py_recursion_remaining <= 1, CALL);
+            }
+            // _INIT_CALL_PY_EXACT_ARGS
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            {
+                int argcount = oparg;
+                if (self_or_null != NULL) {
+                    args--;
+                    argcount++;
+                }
+                STAT_INC(CALL, hit);
+                PyFunctionObject *func = (PyFunctionObject *)callable;
+                new_frame = _PyFrame_PushUnchecked(tstate, func, argcount);
+                for (int i = 0; i < argcount; i++) {
+                    new_frame->localsplus[i] = args[i];
+                }
+            }
+            // _SAVE_RETURN_OFFSET
+            {
+                #if TIER_ONE
+                frame->return_offset = (uint16_t)(next_instr - this_instr);
+                #endif
+                #if TIER_TWO
+                frame->return_offset = oparg;
+                #endif
+            }
+            // _PUSH_FRAME
+            {
+                // Write it out explicitly because it's subtly different.
+                // Eventually this should be the only occurrence of this code.
+                assert(tstate->interp->eval_frame == NULL);
+                stack_pointer += -2 - oparg;
+                _PyFrame_SetStackPointer(frame, stack_pointer);
+                new_frame->previous = frame;
+                CALL_STAT_INC(inlined_py_calls);
+                frame = tstate->current_frame = new_frame;
+                tstate->py_recursion_remaining--;
+                LOAD_SP();
+                LOAD_IP(0);
+                #if LLTRACE && TIER_ONE
+                lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+                if (lltrace < 0) {
+                    goto exit_unwind;
+                }
+                #endif
+            }
+            stack_pointer += (((0) ? 1 : 0));
+            DISPATCH();
+        }
+
+        TARGET(CALL_PY_WITH_DEFAULTS) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_PY_WITH_DEFAULTS);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *self_or_null;
+            PyObject *callable;
+            args = &stack_pointer[-oparg];
+            self_or_null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            uint32_t func_version = read_u32(&this_instr[2].cache);
+            DEOPT_IF(tstate->interp->eval_frame, CALL);
+            int argcount = oparg;
+            if (self_or_null != NULL) {
+                args--;
+                argcount++;
+            }
+            DEOPT_IF(!PyFunction_Check(callable), CALL);
+            PyFunctionObject *func = (PyFunctionObject *)callable;
+            DEOPT_IF(func->func_version != func_version, CALL);
+            PyCodeObject *code = (PyCodeObject *)func->func_code;
+            assert(func->func_defaults);
+            assert(PyTuple_CheckExact(func->func_defaults));
+            int defcount = (int)PyTuple_GET_SIZE(func->func_defaults);
+            assert(defcount <= code->co_argcount);
+            int min_args = code->co_argcount - defcount;
+            DEOPT_IF(argcount > code->co_argcount, CALL);
+            DEOPT_IF(argcount < min_args, CALL);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
+            STAT_INC(CALL, hit);
+            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, func, code->co_argcount);
+            for (int i = 0; i < argcount; i++) {
+                new_frame->localsplus[i] = args[i];
+            }
+            for (int i = argcount; i < code->co_argcount; i++) {
+                PyObject *def = PyTuple_GET_ITEM(func->func_defaults, i - min_args);
+                new_frame->localsplus[i] = Py_NewRef(def);
+            }
+            // Manipulate stack and cache directly since we leave using DISPATCH_INLINED().
+            STACK_SHRINK(oparg + 2);
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            DISPATCH_INLINED(new_frame);
+        }
+
+        TARGET(CALL_STR_1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_STR_1);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            DEOPT_IF(null != NULL, CALL);
+            DEOPT_IF(callable != (PyObject *)&PyUnicode_Type, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *arg = args[0];
+            res = PyObject_Str(arg);
+            Py_DECREF(arg);
+            Py_DECREF(&PyUnicode_Type);  // I.e., callable
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_TUPLE_1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_TUPLE_1);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            DEOPT_IF(null != NULL, CALL);
+            DEOPT_IF(callable != (PyObject *)&PyTuple_Type, CALL);
+            STAT_INC(CALL, hit);
+            PyObject *arg = args[0];
+            res = PySequence_Tuple(arg);
+            Py_DECREF(arg);
+            Py_DECREF(&PyTuple_Type);  // I.e., tuple
+            if (res == NULL) { stack_pointer += -2 - oparg; goto error; }
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            CHECK_EVAL_BREAKER();
+            DISPATCH();
+        }
+
+        TARGET(CALL_TYPE_1) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(CALL_TYPE_1);
+            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
+            PyObject **args;
+            PyObject *null;
+            PyObject *callable;
+            PyObject *res;
+            args = &stack_pointer[-oparg];
+            null = stack_pointer[-1 - oparg];
+            callable = stack_pointer[-2 - oparg];
+            assert(oparg == 1);
+            DEOPT_IF(null != NULL, CALL);
+            PyObject *obj = args[0];
+            DEOPT_IF(callable != (PyObject *)&PyType_Type, CALL);
+            STAT_INC(CALL, hit);
+            res = Py_NewRef(Py_TYPE(obj));
+            Py_DECREF(obj);
+            Py_DECREF(&PyType_Type);  // I.e., callable
+            stack_pointer[-2 - oparg] = res;
+            stack_pointer += -1 - oparg;
+            DISPATCH();
+        }
+
+        TARGET(CHECK_EG_MATCH) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CHECK_EG_MATCH);
+            PyObject *match_type;
+            PyObject *exc_value;
+            PyObject *rest;
+            PyObject *match;
+            match_type = stack_pointer[-1];
+            exc_value = stack_pointer[-2];
+            if (_PyEval_CheckExceptStarTypeValid(tstate, match_type) < 0) {
+                Py_DECREF(exc_value);
+                Py_DECREF(match_type);
+                if (true) goto pop_2_error;
+            }
+            match = NULL;
+            rest = NULL;
+            int res = _PyEval_ExceptionGroupMatch(exc_value, match_type,
+                &match, &rest);
+            Py_DECREF(exc_value);
+            Py_DECREF(match_type);
+            if (res < 0) goto pop_2_error;
+            assert((match == NULL) == (rest == NULL));
+            if (match == NULL) goto pop_2_error;
+            if (!Py_IsNone(match)) {
+                PyErr_SetHandledException(match);
+            }
+            stack_pointer[-2] = rest;
+            stack_pointer[-1] = match;
+            DISPATCH();
+        }
+
+        TARGET(CHECK_EXC_MATCH) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CHECK_EXC_MATCH);
+            PyObject *right;
+            PyObject *left;
+            PyObject *b;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            assert(PyExceptionInstance_Check(left));
+            if (_PyEval_CheckExceptTypeValid(tstate, right) < 0) {
+                Py_DECREF(right);
+                if (true) goto pop_1_error;
+            }
+            int res = PyErr_GivenExceptionMatches(left, right);
+            Py_DECREF(right);
+            b = res ? Py_True : Py_False;
+            stack_pointer[-1] = b;
+            DISPATCH();
+        }
+
+        TARGET(CLEANUP_THROW) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CLEANUP_THROW);
+            PyObject *exc_value;
+            PyObject *last_sent_val;
+            PyObject *sub_iter;
+            PyObject *none;
+            PyObject *value;
+            exc_value = stack_pointer[-1];
+            last_sent_val = stack_pointer[-2];
+            sub_iter = stack_pointer[-3];
+            TIER_ONE_ONLY
+            assert(throwflag);
+            assert(exc_value && PyExceptionInstance_Check(exc_value));
+            if (PyErr_GivenExceptionMatches(exc_value, PyExc_StopIteration)) {
+                value = Py_NewRef(((PyStopIterationObject *)exc_value)->value);
+                Py_DECREF(sub_iter);
+                Py_DECREF(last_sent_val);
+                Py_DECREF(exc_value);
+                none = Py_None;
+            }
+            else {
+                _PyErr_SetRaisedException(tstate, Py_NewRef(exc_value));
+                monitor_reraise(tstate, frame, this_instr);
+                goto exception_unwind;
+            }
+            stack_pointer[-3] = none;
+            stack_pointer[-2] = value;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(COMPARE_OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(COMPARE_OP);
+            PREDICTED(COMPARE_OP);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            // _SPECIALIZE_COMPARE_OP
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_CompareOp(left, right, next_instr, oparg);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(COMPARE_OP, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
+            }
+            // _COMPARE_OP
+            {
+                assert((oparg >> 5) <= Py_GE);
+                res = PyObject_RichCompare(left, right, oparg >> 5);
+                Py_DECREF(left);
+                Py_DECREF(right);
+                if (res == NULL) goto pop_2_error;
+                if (oparg & 16) {
+                    int res_bool = PyObject_IsTrue(res);
+                    Py_DECREF(res);
+                    if (res_bool < 0) goto pop_2_error;
+                    res = res_bool ? Py_True : Py_False;
+                }
+            }
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(COMPARE_OP_FLOAT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(COMPARE_OP_FLOAT);
+            static_assert(INLINE_CACHE_ENTRIES_COMPARE_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyFloat_CheckExact(left), COMPARE_OP);
+            DEOPT_IF(!PyFloat_CheckExact(right), COMPARE_OP);
+            STAT_INC(COMPARE_OP, hit);
+            double dleft = PyFloat_AS_DOUBLE(left);
+            double dright = PyFloat_AS_DOUBLE(right);
+            // 1 if NaN, 2 if <, 4 if >, 8 if ==; this matches low four bits of the oparg
+            int sign_ish = COMPARISON_BIT(dleft, dright);
+            _Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
+            _Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
+            res = (sign_ish & oparg) ? Py_True : Py_False;
+            // It's always a bool, so we don't care about oparg & 16.
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(COMPARE_OP_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(COMPARE_OP_INT);
+            static_assert(INLINE_CACHE_ENTRIES_COMPARE_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyLong_CheckExact(left), COMPARE_OP);
+            DEOPT_IF(!PyLong_CheckExact(right), COMPARE_OP);
+            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)left), COMPARE_OP);
+            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)right), COMPARE_OP);
+            STAT_INC(COMPARE_OP, hit);
+            assert(_PyLong_DigitCount((PyLongObject *)left) <= 1 &&
+                   _PyLong_DigitCount((PyLongObject *)right) <= 1);
+            Py_ssize_t ileft = _PyLong_CompactValue((PyLongObject *)left);
+            Py_ssize_t iright = _PyLong_CompactValue((PyLongObject *)right);
+            // 2 if <, 4 if >, 8 if ==; this matches the low 4 bits of the oparg
+            int sign_ish = COMPARISON_BIT(ileft, iright);
+            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
+            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
+            res = (sign_ish & oparg) ? Py_True : Py_False;
+            // It's always a bool, so we don't care about oparg & 16.
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(COMPARE_OP_STR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(COMPARE_OP_STR);
+            static_assert(INLINE_CACHE_ENTRIES_COMPARE_OP == 1, "incorrect cache size");
+            PyObject *right;
+            PyObject *left;
+            PyObject *res;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            DEOPT_IF(!PyUnicode_CheckExact(left), COMPARE_OP);
+            DEOPT_IF(!PyUnicode_CheckExact(right), COMPARE_OP);
+            STAT_INC(COMPARE_OP, hit);
+            int eq = _PyUnicode_Equal(left, right);
+            assert((oparg >> 5) == Py_EQ || (oparg >> 5) == Py_NE);
+            _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
+            _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
+            assert(eq == 0 || eq == 1);
+            assert((oparg & 0xf) == COMPARISON_NOT_EQUALS || (oparg & 0xf) == COMPARISON_EQUALS);
+            assert(COMPARISON_NOT_EQUALS + 1 == COMPARISON_EQUALS);
+            res = ((COMPARISON_NOT_EQUALS + eq) & oparg) ? Py_True : Py_False;
+            // It's always a bool, so we don't care about oparg & 16.
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(CONTAINS_OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CONTAINS_OP);
+            PyObject *right;
+            PyObject *left;
+            PyObject *b;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            int res = PySequence_Contains(right, left);
+            Py_DECREF(left);
+            Py_DECREF(right);
+            if (res < 0) goto pop_2_error;
+            b = (res ^ oparg) ? Py_True : Py_False;
+            stack_pointer[-2] = b;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(CONVERT_VALUE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(CONVERT_VALUE);
+            PyObject *value;
+            PyObject *result;
+            value = stack_pointer[-1];
+            convertion_func_ptr  conv_fn;
+            assert(oparg >= FVC_STR && oparg <= FVC_ASCII);
+            conv_fn = CONVERSION_FUNCTIONS[oparg];
+            result = conv_fn(value);
+            Py_DECREF(value);
+            if (result == NULL) goto pop_1_error;
+            stack_pointer[-1] = result;
+            DISPATCH();
+        }
+
+        TARGET(COPY) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(COPY);
+            PyObject *bottom;
+            PyObject *top;
+            bottom = stack_pointer[-1 - (oparg-1)];
+            assert(oparg > 0);
+            top = Py_NewRef(bottom);
+            stack_pointer[0] = top;
+            stack_pointer += 1;
+            DISPATCH();
+        }
+
+        TARGET(COPY_FREE_VARS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(COPY_FREE_VARS);
+            /* Copy closure variables to free variables */
+            PyCodeObject *co = _PyFrame_GetCode(frame);
+            assert(PyFunction_Check(frame->f_funcobj));
+            PyObject *closure = ((PyFunctionObject *)frame->f_funcobj)->func_closure;
+            assert(oparg == co->co_nfreevars);
+            int offset = co->co_nlocalsplus - oparg;
+            for (int i = 0; i < oparg; ++i) {
+                PyObject *o = PyTuple_GET_ITEM(closure, i);
+                frame->localsplus[offset + i] = Py_NewRef(o);
+            }
+            DISPATCH();
+        }
+
+        TARGET(DELETE_ATTR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(DELETE_ATTR);
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err = PyObject_DelAttr(owner, name);
+            Py_DECREF(owner);
+            if (err) goto pop_1_error;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(DELETE_DEREF) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(DELETE_DEREF);
+            PyObject *cell = GETLOCAL(oparg);
+            PyObject *oldobj = PyCell_GET(cell);
+            // Can't use ERROR_IF here.
+            // Fortunately we don't need its superpower.
+            if (oldobj == NULL) {
+                _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                GOTO_ERROR(error);
+            }
+            PyCell_SET(cell, NULL);
+            Py_DECREF(oldobj);
+            DISPATCH();
+        }
+
+        TARGET(DELETE_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(DELETE_FAST);
+            PyObject *v = GETLOCAL(oparg);
+            if (v == NULL) goto unbound_local_error;
+            SETLOCAL(oparg, NULL);
+            DISPATCH();
+        }
 
-            PyObject *old_value = PyList_GET_ITEM(list, index);
-            PyList_SET_ITEM(list, index, value);
-            assert(old_value != NULL);
-            Py_DECREF(old_value);
-            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
-            Py_DECREF(list);
-            #line 818 "Python/generated_cases.c.h"
-            STACK_SHRINK(3);
+        TARGET(DELETE_GLOBAL) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(DELETE_GLOBAL);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err;
+            err = PyDict_DelItem(GLOBALS(), name);
+            // Can't use ERROR_IF here.
+            if (err != 0) {
+                if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
+                    _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                        NAME_ERROR_MSG, name);
+                }
+                GOTO_ERROR(error);
+            }
             DISPATCH();
         }
 
-        TARGET(STORE_SUBSCR_DICT) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *dict = stack_pointer[-2];
-            PyObject *value = stack_pointer[-3];
-            #line 578 "Python/bytecodes.c"
-            DEOPT_IF(!PyDict_CheckExact(dict), STORE_SUBSCR);
-            STAT_INC(STORE_SUBSCR, hit);
-            int err = _PyDict_SetItem_Take2((PyDictObject *)dict, sub, value);
-            Py_DECREF(dict);
-            if (err) goto pop_3_error;
-            #line 834 "Python/generated_cases.c.h"
-            STACK_SHRINK(3);
+        TARGET(DELETE_NAME) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(DELETE_NAME);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            PyObject *ns = LOCALS();
+            int err;
+            if (ns == NULL) {
+                _PyErr_Format(tstate, PyExc_SystemError,
+                              "no locals when deleting %R", name);
+                GOTO_ERROR(error);
+            }
+            err = PyObject_DelItem(ns, name);
+            // Can't use ERROR_IF here.
+            if (err != 0) {
+                _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                    NAME_ERROR_MSG,
+                    name);
+                GOTO_ERROR(error);
+            }
             DISPATCH();
         }
 
         TARGET(DELETE_SUBSCR) {
-            PyObject *sub = stack_pointer[-1];
-            PyObject *container = stack_pointer[-2];
-            #line 586 "Python/bytecodes.c"
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(DELETE_SUBSCR);
+            PyObject *sub;
+            PyObject *container;
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
             /* del container[sub] */
             int err = PyObject_DelItem(container, sub);
-            #line 846 "Python/generated_cases.c.h"
             Py_DECREF(container);
             Py_DECREF(sub);
-            #line 589 "Python/bytecodes.c"
             if (err) goto pop_2_error;
-            #line 851 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(CALL_INTRINSIC_1) {
-            PyObject *value = stack_pointer[-1];
+        TARGET(DICT_MERGE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(DICT_MERGE);
+            PyObject *update;
+            PyObject *dict;
+            PyObject *callable;
+            update = stack_pointer[-1];
+            dict = stack_pointer[-2 - (oparg - 1)];
+            callable = stack_pointer[-5 - (oparg - 1)];
+            if (_PyDict_MergeEx(dict, update, 2) < 0) {
+                _PyEval_FormatKwargsError(tstate, callable, update);
+                Py_DECREF(update);
+                if (true) goto pop_1_error;
+            }
+            Py_DECREF(update);
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(DICT_UPDATE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(DICT_UPDATE);
+            PyObject *update;
+            PyObject *dict;
+            update = stack_pointer[-1];
+            dict = stack_pointer[-2 - (oparg - 1)];
+            if (PyDict_Update(dict, update) < 0) {
+                if (_PyErr_ExceptionMatches(tstate, PyExc_AttributeError)) {
+                    _PyErr_Format(tstate, PyExc_TypeError,
+                                  "'%.200s' object is not a mapping",
+                                  Py_TYPE(update)->tp_name);
+                }
+                Py_DECREF(update);
+                if (true) goto pop_1_error;
+            }
+            Py_DECREF(update);
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(END_ASYNC_FOR) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(END_ASYNC_FOR);
+            PyObject *exc;
+            PyObject *awaitable;
+            exc = stack_pointer[-1];
+            awaitable = stack_pointer[-2];
+            TIER_ONE_ONLY
+            assert(exc && PyExceptionInstance_Check(exc));
+            if (PyErr_GivenExceptionMatches(exc, PyExc_StopAsyncIteration)) {
+                Py_DECREF(awaitable);
+                Py_DECREF(exc);
+            }
+            else {
+                Py_INCREF(exc);
+                _PyErr_SetRaisedException(tstate, exc);
+                monitor_reraise(tstate, frame, this_instr);
+                goto exception_unwind;
+            }
+            stack_pointer += -2;
+            DISPATCH();
+        }
+
+        TARGET(END_FOR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(END_FOR);
+            PyObject *value;
+            // _POP_TOP
+            value = stack_pointer[-1];
+            {
+                Py_DECREF(value);
+            }
+            // _POP_TOP
+            value = stack_pointer[-2];
+            {
+                Py_DECREF(value);
+            }
+            stack_pointer += -2;
+            DISPATCH();
+        }
+
+        TARGET(END_SEND) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(END_SEND);
+            PyObject *value;
+            PyObject *receiver;
+            value = stack_pointer[-1];
+            receiver = stack_pointer[-2];
+            Py_DECREF(receiver);
+            stack_pointer[-2] = value;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(ENTER_EXECUTOR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(ENTER_EXECUTOR);
+            TIER_ONE_ONLY
+            CHECK_EVAL_BREAKER();
+            PyCodeObject *code = _PyFrame_GetCode(frame);
+            _PyExecutorObject *executor = (_PyExecutorObject *)code->co_executors->executors[oparg&255];
+            int original_oparg = executor->vm_data.oparg | (oparg & 0xfffff00);
+            JUMPBY(1-original_oparg);
+            frame->instr_ptr = next_instr;
+            Py_INCREF(executor);
+            if (executor->execute == _PyUOpExecute) {
+                current_executor = (_PyUOpExecutorObject *)executor;
+                GOTO_TIER_TWO();
+            }
+            frame = executor->execute(executor, frame, stack_pointer);
+            if (frame == NULL) {
+                frame = tstate->current_frame;
+                goto resume_with_error;
+            }
+            goto enter_tier_one;
+        }
+
+        TARGET(EXIT_INIT_CHECK) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(EXIT_INIT_CHECK);
+            PyObject *should_be_none;
+            should_be_none = stack_pointer[-1];
+            assert(STACK_LEVEL() == 2);
+            if (should_be_none != Py_None) {
+                PyErr_Format(PyExc_TypeError,
+                             "__init__() should return None, not '%.200s'",
+                             Py_TYPE(should_be_none)->tp_name);
+                GOTO_ERROR(error);
+            }
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(EXTENDED_ARG) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(EXTENDED_ARG);
+            assert(oparg);
+            opcode = next_instr->op.code;
+            oparg = oparg << 8 | next_instr->op.arg;
+            PRE_DISPATCH_GOTO();
+            DISPATCH_GOTO();
+        }
+
+        TARGET(FORMAT_SIMPLE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(FORMAT_SIMPLE);
+            PyObject *value;
             PyObject *res;
-            #line 593 "Python/bytecodes.c"
-            assert(oparg <= MAX_INTRINSIC_1);
-            res = _PyIntrinsics_UnaryFunctions[oparg](tstate, value);
-            #line 862 "Python/generated_cases.c.h"
-            Py_DECREF(value);
-            #line 596 "Python/bytecodes.c"
-            if (res == NULL) goto pop_1_error;
-            #line 866 "Python/generated_cases.c.h"
+            value = stack_pointer[-1];
+            /* If value is a unicode object, then we know the result
+             * of format(value) is value itself. */
+            if (!PyUnicode_CheckExact(value)) {
+                res = PyObject_Format(value, NULL);
+                Py_DECREF(value);
+                if (res == NULL) goto pop_1_error;
+            }
+            else {
+                res = value;
+            }
             stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(CALL_INTRINSIC_2) {
-            PyObject *value1 = stack_pointer[-1];
-            PyObject *value2 = stack_pointer[-2];
+        TARGET(FORMAT_WITH_SPEC) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(FORMAT_WITH_SPEC);
+            PyObject *fmt_spec;
+            PyObject *value;
             PyObject *res;
-            #line 600 "Python/bytecodes.c"
-            assert(oparg <= MAX_INTRINSIC_2);
-            res = _PyIntrinsics_BinaryFunctions[oparg](tstate, value2, value1);
-            #line 878 "Python/generated_cases.c.h"
-            Py_DECREF(value2);
-            Py_DECREF(value1);
-            #line 603 "Python/bytecodes.c"
+            fmt_spec = stack_pointer[-1];
+            value = stack_pointer[-2];
+            res = PyObject_Format(value, fmt_spec);
+            Py_DECREF(value);
+            Py_DECREF(fmt_spec);
             if (res == NULL) goto pop_2_error;
-            #line 883 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(RAISE_VARARGS) {
-            PyObject **args = (stack_pointer - oparg);
-            #line 607 "Python/bytecodes.c"
-            PyObject *cause = NULL, *exc = NULL;
-            switch (oparg) {
-            case 2:
-                cause = args[1];
-                /* fall through */
-            case 1:
-                exc = args[0];
-                /* fall through */
-            case 0:
-                if (do_raise(tstate, exc, cause)) { STACK_SHRINK(oparg); goto exception_unwind; }
-                break;
-            default:
-                _PyErr_SetString(tstate, PyExc_SystemError,
-                                 "bad RAISE_VARARGS oparg");
-                break;
+        TARGET(FOR_ITER) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(FOR_ITER);
+            PREDICTED(FOR_ITER);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *iter;
+            PyObject *next;
+            // _SPECIALIZE_FOR_ITER
+            iter = stack_pointer[-1];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_ForIter(iter, next_instr, oparg);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(FOR_ITER, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            if (true) { STACK_SHRINK(oparg); goto error; }
-            #line 909 "Python/generated_cases.c.h"
-        }
-
-        TARGET(INTERPRETER_EXIT) {
-            PyObject *retval = stack_pointer[-1];
-            #line 627 "Python/bytecodes.c"
-            assert(frame == &entry_frame);
-            assert(_PyFrame_IsIncomplete(frame));
-            STACK_SHRINK(1);  // Since we're not going to DISPATCH()
-            assert(EMPTY());
-            /* Restore previous cframe and return. */
-            tstate->cframe = cframe.previous;
-            assert(tstate->cframe->current_frame == frame->previous);
-            assert(!_PyErr_Occurred(tstate));
-            _Py_LeaveRecursiveCallTstate(tstate);
-            return retval;
-            #line 925 "Python/generated_cases.c.h"
+            // _FOR_ITER
+            {
+                /* before: [iter]; after: [iter, iter()] *or* [] (and jump over END_FOR.) */
+                next = (*Py_TYPE(iter)->tp_iternext)(iter);
+                if (next == NULL) {
+                    if (_PyErr_Occurred(tstate)) {
+                        if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
+                            GOTO_ERROR(error);
+                        }
+                        monitor_raise(tstate, frame, this_instr);
+                        _PyErr_Clear(tstate);
+                    }
+                    /* iterator ended normally */
+                    assert(next_instr[oparg].op.code == END_FOR ||
+                       next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
+                    Py_DECREF(iter);
+                    STACK_SHRINK(1);
+                    /* Jump forward oparg, then skip following END_FOR instruction */
+                    JUMPBY(oparg + 1);
+                    DISPATCH();
+                }
+                // Common case: no jump, leave it to the code generator
+            }
+            stack_pointer[0] = next;
+            stack_pointer += 1;
+            DISPATCH();
         }
 
-        TARGET(RETURN_VALUE) {
-            PyObject *retval = stack_pointer[-1];
-            #line 640 "Python/bytecodes.c"
-            STACK_SHRINK(1);
-            assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
-            _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
-            // GH-99729: We need to unlink the frame *before* clearing it:
-            _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-            #line 943 "Python/generated_cases.c.h"
+        TARGET(FOR_ITER_GEN) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(FOR_ITER_GEN);
+            static_assert(INLINE_CACHE_ENTRIES_FOR_ITER == 1, "incorrect cache size");
+            PyObject *iter;
+            iter = stack_pointer[-1];
+            DEOPT_IF(tstate->interp->eval_frame, FOR_ITER);
+            PyGenObject *gen = (PyGenObject *)iter;
+            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type, FOR_ITER);
+            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING, FOR_ITER);
+            STAT_INC(FOR_ITER, hit);
+            _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
+            _PyFrame_StackPush(gen_frame, Py_None);
+            gen->gi_frame_state = FRAME_EXECUTING;
+            gen->gi_exc_state.previous_item = tstate->exc_info;
+            tstate->exc_info = &gen->gi_exc_state;
+            assert(next_instr[oparg].op.code == END_FOR ||
+                   next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
+            assert(next_instr - this_instr + oparg <= UINT16_MAX);
+            frame->return_offset = (uint16_t)(next_instr - this_instr + oparg);
+            DISPATCH_INLINED(gen_frame);
         }
 
-        TARGET(INSTRUMENTED_RETURN_VALUE) {
-            PyObject *retval = stack_pointer[-1];
-            #line 655 "Python/bytecodes.c"
-            int err = _Py_call_instrumentation_arg(
-                    tstate, PY_MONITORING_EVENT_PY_RETURN,
-                    frame, next_instr-1, retval);
-            if (err) goto error;
-            STACK_SHRINK(1);
-            assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
-            _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
-            // GH-99729: We need to unlink the frame *before* clearing it:
-            _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-            #line 965 "Python/generated_cases.c.h"
+        TARGET(FOR_ITER_LIST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(FOR_ITER_LIST);
+            static_assert(INLINE_CACHE_ENTRIES_FOR_ITER == 1, "incorrect cache size");
+            PyObject *iter;
+            PyObject *next;
+            /* Skip 1 cache entry */
+            // _ITER_CHECK_LIST
+            iter = stack_pointer[-1];
+            {
+                DEOPT_IF(Py_TYPE(iter) != &PyListIter_Type, FOR_ITER);
+            }
+            // _ITER_JUMP_LIST
+            {
+                _PyListIterObject *it = (_PyListIterObject *)iter;
+                assert(Py_TYPE(iter) == &PyListIter_Type);
+                STAT_INC(FOR_ITER, hit);
+                PyListObject *seq = it->it_seq;
+                if (seq == NULL || it->it_index >= PyList_GET_SIZE(seq)) {
+                    if (seq != NULL) {
+                        it->it_seq = NULL;
+                        Py_DECREF(seq);
+                    }
+                    Py_DECREF(iter);
+                    STACK_SHRINK(1);
+                    /* Jump forward oparg, then skip following END_FOR instruction */
+                    JUMPBY(oparg + 1);
+                    DISPATCH();
+                }
+            }
+            // _ITER_NEXT_LIST
+            {
+                _PyListIterObject *it = (_PyListIterObject *)iter;
+                assert(Py_TYPE(iter) == &PyListIter_Type);
+                PyListObject *seq = it->it_seq;
+                assert(seq);
+                assert(it->it_index < PyList_GET_SIZE(seq));
+                next = Py_NewRef(PyList_GET_ITEM(seq, it->it_index++));
+            }
+            stack_pointer[0] = next;
+            stack_pointer += 1;
+            DISPATCH();
         }
 
-        TARGET(RETURN_CONST) {
-            #line 674 "Python/bytecodes.c"
-            PyObject *retval = GETITEM(frame->f_code->co_consts, oparg);
-            Py_INCREF(retval);
-            assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
-            _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
-            // GH-99729: We need to unlink the frame *before* clearing it:
-            _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-            #line 983 "Python/generated_cases.c.h"
+        TARGET(FOR_ITER_RANGE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(FOR_ITER_RANGE);
+            static_assert(INLINE_CACHE_ENTRIES_FOR_ITER == 1, "incorrect cache size");
+            PyObject *iter;
+            PyObject *next;
+            /* Skip 1 cache entry */
+            // _ITER_CHECK_RANGE
+            iter = stack_pointer[-1];
+            {
+                _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+                DEOPT_IF(Py_TYPE(r) != &PyRangeIter_Type, FOR_ITER);
+            }
+            // _ITER_JUMP_RANGE
+            {
+                _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+                assert(Py_TYPE(r) == &PyRangeIter_Type);
+                STAT_INC(FOR_ITER, hit);
+                if (r->len <= 0) {
+                    STACK_SHRINK(1);
+                    Py_DECREF(r);
+                    // Jump over END_FOR instruction.
+                    JUMPBY(oparg + 1);
+                    DISPATCH();
+                }
+            }
+            // _ITER_NEXT_RANGE
+            {
+                _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
+                assert(Py_TYPE(r) == &PyRangeIter_Type);
+                assert(r->len > 0);
+                long value = r->start;
+                r->start = value + r->step;
+                r->len--;
+                next = PyLong_FromLong(value);
+                if (next == NULL) goto error;
+            }
+            stack_pointer[0] = next;
+            stack_pointer += 1;
+            DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_RETURN_CONST) {
-            #line 690 "Python/bytecodes.c"
-            PyObject *retval = GETITEM(frame->f_code->co_consts, oparg);
-            int err = _Py_call_instrumentation_arg(
-                    tstate, PY_MONITORING_EVENT_PY_RETURN,
-                    frame, next_instr-1, retval);
-            if (err) goto error;
-            Py_INCREF(retval);
-            assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
-            _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
-            // GH-99729: We need to unlink the frame *before* clearing it:
-            _PyInterpreterFrame *dying = frame;
-            frame = cframe.current_frame = dying->previous;
-            _PyEvalFrameClearAndPop(tstate, dying);
-            frame->prev_instr += frame->return_offset;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-            #line 1005 "Python/generated_cases.c.h"
+        TARGET(FOR_ITER_TUPLE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(FOR_ITER_TUPLE);
+            static_assert(INLINE_CACHE_ENTRIES_FOR_ITER == 1, "incorrect cache size");
+            PyObject *iter;
+            PyObject *next;
+            /* Skip 1 cache entry */
+            // _ITER_CHECK_TUPLE
+            iter = stack_pointer[-1];
+            {
+                DEOPT_IF(Py_TYPE(iter) != &PyTupleIter_Type, FOR_ITER);
+            }
+            // _ITER_JUMP_TUPLE
+            {
+                _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
+                assert(Py_TYPE(iter) == &PyTupleIter_Type);
+                STAT_INC(FOR_ITER, hit);
+                PyTupleObject *seq = it->it_seq;
+                if (seq == NULL || it->it_index >= PyTuple_GET_SIZE(seq)) {
+                    if (seq != NULL) {
+                        it->it_seq = NULL;
+                        Py_DECREF(seq);
+                    }
+                    Py_DECREF(iter);
+                    STACK_SHRINK(1);
+                    /* Jump forward oparg, then skip following END_FOR instruction */
+                    JUMPBY(oparg + 1);
+                    DISPATCH();
+                }
+            }
+            // _ITER_NEXT_TUPLE
+            {
+                _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
+                assert(Py_TYPE(iter) == &PyTupleIter_Type);
+                PyTupleObject *seq = it->it_seq;
+                assert(seq);
+                assert(it->it_index < PyTuple_GET_SIZE(seq));
+                next = Py_NewRef(PyTuple_GET_ITEM(seq, it->it_index++));
+            }
+            stack_pointer[0] = next;
+            stack_pointer += 1;
+            DISPATCH();
         }
 
         TARGET(GET_AITER) {
-            PyObject *obj = stack_pointer[-1];
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(GET_AITER);
+            PyObject *obj;
             PyObject *iter;
-            #line 710 "Python/bytecodes.c"
+            obj = stack_pointer[-1];
             unaryfunc getter = NULL;
             PyTypeObject *type = Py_TYPE(obj);
-
             if (type->tp_as_async != NULL) {
                 getter = type->tp_as_async->am_aiter;
             }
-
             if (getter == NULL) {
                 _PyErr_Format(tstate, PyExc_TypeError,
                               "'async for' requires an object with "
                               "__aiter__ method, got %.100s",
                               type->tp_name);
-            #line 1024 "Python/generated_cases.c.h"
                 Py_DECREF(obj);
-            #line 723 "Python/bytecodes.c"
                 if (true) goto pop_1_error;
             }
-
             iter = (*getter)(obj);
-            #line 1031 "Python/generated_cases.c.h"
             Py_DECREF(obj);
-            #line 728 "Python/bytecodes.c"
             if (iter == NULL) goto pop_1_error;
-
             if (Py_TYPE(iter)->tp_as_async == NULL ||
-                    Py_TYPE(iter)->tp_as_async->am_anext == NULL) {
-
+                Py_TYPE(iter)->tp_as_async->am_anext == NULL) {
                 _PyErr_Format(tstate, PyExc_TypeError,
                               "'async for' received an object from __aiter__ "
                               "that does not implement __anext__: %.100s",
@@ -1042,33 +2650,33 @@
                 Py_DECREF(iter);
                 if (true) goto pop_1_error;
             }
-            #line 1046 "Python/generated_cases.c.h"
             stack_pointer[-1] = iter;
             DISPATCH();
         }
 
         TARGET(GET_ANEXT) {
-            PyObject *aiter = stack_pointer[-1];
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(GET_ANEXT);
+            PyObject *aiter;
             PyObject *awaitable;
-            #line 743 "Python/bytecodes.c"
+            aiter = stack_pointer[-1];
             unaryfunc getter = NULL;
             PyObject *next_iter = NULL;
             PyTypeObject *type = Py_TYPE(aiter);
-
             if (PyAsyncGen_CheckExact(aiter)) {
                 awaitable = type->tp_as_async->am_anext(aiter);
                 if (awaitable == NULL) {
-                    goto error;
+                    GOTO_ERROR(error);
                 }
             } else {
                 if (type->tp_as_async != NULL){
                     getter = type->tp_as_async->am_anext;
                 }
-
                 if (getter != NULL) {
                     next_iter = (*getter)(aiter);
                     if (next_iter == NULL) {
-                        goto error;
+                        GOTO_ERROR(error);
                     }
                 }
                 else {
@@ -1076,9 +2684,8 @@
                                   "'async for' requires an iterator with "
                                   "__anext__ method, got %.100s",
                                   type->tp_name);
-                    goto error;
+                    GOTO_ERROR(error);
                 }
-
                 awaitable = _PyCoro_GetAwaitableIter(next_iter);
                 if (awaitable == NULL) {
                     _PyErr_FormatFromCause(
@@ -1086,36 +2693,29 @@
                         "'async for' received an invalid object "
                         "from __anext__: %.100s",
                         Py_TYPE(next_iter)->tp_name);
-
                     Py_DECREF(next_iter);
-                    goto error;
+                    GOTO_ERROR(error);
                 } else {
                     Py_DECREF(next_iter);
                 }
             }
-
-            #line 1098 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = awaitable;
-            PREDICT(LOAD_CONST);
+            stack_pointer[0] = awaitable;
+            stack_pointer += 1;
             DISPATCH();
         }
 
         TARGET(GET_AWAITABLE) {
-            PREDICTED(GET_AWAITABLE);
-            PyObject *iterable = stack_pointer[-1];
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(GET_AWAITABLE);
+            PyObject *iterable;
             PyObject *iter;
-            #line 790 "Python/bytecodes.c"
+            iterable = stack_pointer[-1];
             iter = _PyCoro_GetAwaitableIter(iterable);
-
             if (iter == NULL) {
-                format_awaitable_error(tstate, Py_TYPE(iterable), oparg);
+                _PyEval_FormatAwaitableError(tstate, Py_TYPE(iterable), oparg);
             }
-
-            #line 1116 "Python/generated_cases.c.h"
             Py_DECREF(iterable);
-            #line 797 "Python/bytecodes.c"
-
             if (iter != NULL && PyCoro_CheckExact(iter)) {
                 PyObject *yf = _PyGen_yf((PyGenObject*)iter);
                 if (yf != NULL) {
@@ -1129,1392 +2729,1024 @@
                     /* The code below jumps to `error` if `iter` is NULL. */
                 }
             }
-
             if (iter == NULL) goto pop_1_error;
-
-            #line 1136 "Python/generated_cases.c.h"
             stack_pointer[-1] = iter;
-            PREDICT(LOAD_CONST);
             DISPATCH();
         }
 
-        TARGET(SEND) {
-            PREDICTED(SEND);
-            static_assert(INLINE_CACHE_ENTRIES_SEND == 1, "incorrect cache size");
-            PyObject *v = stack_pointer[-1];
-            PyObject *receiver = stack_pointer[-2];
-            PyObject *retval;
-            #line 823 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PySendCache *cache = (_PySendCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_Send(receiver, next_instr);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(SEND, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            assert(frame != &entry_frame);
-            if ((tstate->interp->eval_frame == NULL) &&
-                (Py_TYPE(receiver) == &PyGen_Type || Py_TYPE(receiver) == &PyCoro_Type) &&
-                ((PyGenObject *)receiver)->gi_frame_state < FRAME_EXECUTING)
-            {
-                PyGenObject *gen = (PyGenObject *)receiver;
-                _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-                frame->return_offset = oparg;
-                STACK_SHRINK(1);
-                _PyFrame_StackPush(gen_frame, v);
-                gen->gi_frame_state = FRAME_EXECUTING;
-                gen->gi_exc_state.previous_item = tstate->exc_info;
-                tstate->exc_info = &gen->gi_exc_state;
-                JUMPBY(INLINE_CACHE_ENTRIES_SEND);
-                DISPATCH_INLINED(gen_frame);
-            }
-            if (Py_IsNone(v) && PyIter_Check(receiver)) {
-                retval = Py_TYPE(receiver)->tp_iternext(receiver);
-            }
-            else {
-                retval = PyObject_CallMethodOneArg(receiver, &_Py_ID(send), v);
-            }
-            if (retval == NULL) {
-                if (_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)
-                ) {
-                    monitor_raise(tstate, frame, next_instr-1);
-                }
-                if (_PyGen_FetchStopIterationValue(&retval) == 0) {
-                    assert(retval != NULL);
-                    JUMPBY(oparg);
-                }
-                else {
-                    goto error;
-                }
-            }
-            Py_DECREF(v);
-            #line 1195 "Python/generated_cases.c.h"
-            stack_pointer[-1] = retval;
+        TARGET(GET_ITER) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(GET_ITER);
+            PyObject *iterable;
+            PyObject *iter;
+            iterable = stack_pointer[-1];
+            /* before: [obj]; after [getiter(obj)] */
+            iter = PyObject_GetIter(iterable);
+            Py_DECREF(iterable);
+            if (iter == NULL) goto pop_1_error;
+            stack_pointer[-1] = iter;
             DISPATCH();
         }
 
-        TARGET(SEND_GEN) {
-            PyObject *v = stack_pointer[-1];
-            PyObject *receiver = stack_pointer[-2];
-            #line 872 "Python/bytecodes.c"
-            DEOPT_IF(tstate->interp->eval_frame, SEND);
-            PyGenObject *gen = (PyGenObject *)receiver;
-            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type &&
-                     Py_TYPE(gen) != &PyCoro_Type, SEND);
-            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING, SEND);
-            STAT_INC(SEND, hit);
-            _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-            frame->return_offset = oparg;
-            STACK_SHRINK(1);
-            _PyFrame_StackPush(gen_frame, v);
-            gen->gi_frame_state = FRAME_EXECUTING;
-            gen->gi_exc_state.previous_item = tstate->exc_info;
-            tstate->exc_info = &gen->gi_exc_state;
-            JUMPBY(INLINE_CACHE_ENTRIES_SEND);
-            DISPATCH_INLINED(gen_frame);
-            #line 1220 "Python/generated_cases.c.h"
-        }
-
-        TARGET(INSTRUMENTED_YIELD_VALUE) {
-            PyObject *retval = stack_pointer[-1];
-            #line 890 "Python/bytecodes.c"
-            assert(frame != &entry_frame);
-            PyGenObject *gen = _PyFrame_GetGenerator(frame);
-            gen->gi_frame_state = FRAME_SUSPENDED;
-            _PyFrame_SetStackPointer(frame, stack_pointer - 1);
-            int err = _Py_call_instrumentation_arg(
-                    tstate, PY_MONITORING_EVENT_PY_YIELD,
-                    frame, next_instr-1, retval);
-            if (err) goto error;
-            tstate->exc_info = gen->gi_exc_state.previous_item;
-            gen->gi_exc_state.previous_item = NULL;
-            _Py_LeaveRecursiveCallPy(tstate);
-            _PyInterpreterFrame *gen_frame = frame;
-            frame = cframe.current_frame = frame->previous;
-            gen_frame->previous = NULL;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-            #line 1242 "Python/generated_cases.c.h"
-        }
-
-        TARGET(YIELD_VALUE) {
-            PyObject *retval = stack_pointer[-1];
-            #line 909 "Python/bytecodes.c"
-            // NOTE: It's important that YIELD_VALUE never raises an exception!
-            // The compiler treats any exception raised here as a failed close()
-            // or throw() call.
-            assert(frame != &entry_frame);
-            PyGenObject *gen = _PyFrame_GetGenerator(frame);
-            gen->gi_frame_state = FRAME_SUSPENDED;
-            _PyFrame_SetStackPointer(frame, stack_pointer - 1);
-            tstate->exc_info = gen->gi_exc_state.previous_item;
-            gen->gi_exc_state.previous_item = NULL;
-            _Py_LeaveRecursiveCallPy(tstate);
-            _PyInterpreterFrame *gen_frame = frame;
-            frame = cframe.current_frame = frame->previous;
-            gen_frame->previous = NULL;
-            _PyFrame_StackPush(frame, retval);
-            goto resume_frame;
-            #line 1263 "Python/generated_cases.c.h"
-        }
-
-        TARGET(POP_EXCEPT) {
-            PyObject *exc_value = stack_pointer[-1];
-            #line 927 "Python/bytecodes.c"
-            _PyErr_StackItem *exc_info = tstate->exc_info;
-            Py_XSETREF(exc_info->exc_value, exc_value);
-            #line 1271 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+        TARGET(GET_LEN) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(GET_LEN);
+            PyObject *obj;
+            PyObject *len_o;
+            obj = stack_pointer[-1];
+            // PUSH(len(TOS))
+            Py_ssize_t len_i = PyObject_Length(obj);
+            if (len_i < 0) goto error;
+            len_o = PyLong_FromSsize_t(len_i);
+            if (len_o == NULL) goto error;
+            stack_pointer[0] = len_o;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(RERAISE) {
-            PyObject *exc = stack_pointer[-1];
-            PyObject **values = (stack_pointer - (1 + oparg));
-            #line 932 "Python/bytecodes.c"
-            assert(oparg >= 0 && oparg <= 2);
-            if (oparg) {
-                PyObject *lasti = values[0];
-                if (PyLong_Check(lasti)) {
-                    frame->prev_instr = _PyCode_CODE(frame->f_code) + PyLong_AsLong(lasti);
-                    assert(!_PyErr_Occurred(tstate));
-                }
-                else {
-                    assert(PyLong_Check(lasti));
-                    _PyErr_SetString(tstate, PyExc_SystemError, "lasti is not an int");
-                    goto error;
+        TARGET(GET_YIELD_FROM_ITER) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(GET_YIELD_FROM_ITER);
+            PyObject *iterable;
+            PyObject *iter;
+            iterable = stack_pointer[-1];
+            /* before: [obj]; after [getiter(obj)] */
+            if (PyCoro_CheckExact(iterable)) {
+                /* `iterable` is a coroutine */
+                if (!(_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_ITERABLE_COROUTINE))) {
+                    /* and it is used in a 'yield from' expression of a
+                       regular generator. */
+                    _PyErr_SetString(tstate, PyExc_TypeError,
+                                     "cannot 'yield from' a coroutine object "
+                                     "in a non-coroutine generator");
+                    GOTO_ERROR(error);
                 }
+                iter = iterable;
             }
-            assert(exc && PyExceptionInstance_Check(exc));
-            Py_INCREF(exc);
-            _PyErr_SetRaisedException(tstate, exc);
-            goto exception_unwind;
-            #line 1297 "Python/generated_cases.c.h"
-        }
-
-        TARGET(END_ASYNC_FOR) {
-            PyObject *exc = stack_pointer[-1];
-            PyObject *awaitable = stack_pointer[-2];
-            #line 952 "Python/bytecodes.c"
-            assert(exc && PyExceptionInstance_Check(exc));
-            if (PyErr_GivenExceptionMatches(exc, PyExc_StopAsyncIteration)) {
-            #line 1306 "Python/generated_cases.c.h"
-                Py_DECREF(awaitable);
-                Py_DECREF(exc);
-            #line 955 "Python/bytecodes.c"
+            else if (PyGen_CheckExact(iterable)) {
+                iter = iterable;
             }
             else {
-                Py_INCREF(exc);
-                _PyErr_SetRaisedException(tstate, exc);
-                goto exception_unwind;
+                /* `iterable` is not a generator. */
+                iter = PyObject_GetIter(iterable);
+                if (iter == NULL) {
+                    GOTO_ERROR(error);
+                }
+                Py_DECREF(iterable);
             }
-            #line 1316 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
+            stack_pointer[-1] = iter;
             DISPATCH();
         }
 
-        TARGET(CLEANUP_THROW) {
-            PyObject *exc_value = stack_pointer[-1];
-            PyObject *last_sent_val = stack_pointer[-2];
-            PyObject *sub_iter = stack_pointer[-3];
-            PyObject *none;
-            PyObject *value;
-            #line 964 "Python/bytecodes.c"
-            assert(throwflag);
-            assert(exc_value && PyExceptionInstance_Check(exc_value));
-            if (PyErr_GivenExceptionMatches(exc_value, PyExc_StopIteration)) {
-                value = Py_NewRef(((PyStopIterationObject *)exc_value)->value);
-            #line 1332 "Python/generated_cases.c.h"
-                Py_DECREF(sub_iter);
-                Py_DECREF(last_sent_val);
-                Py_DECREF(exc_value);
-            #line 969 "Python/bytecodes.c"
-                none = Py_NewRef(Py_None);
-            }
-            else {
-                _PyErr_SetRaisedException(tstate, Py_NewRef(exc_value));
-                goto exception_unwind;
-            }
-            #line 1343 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = value;
-            stack_pointer[-2] = none;
+        TARGET(IMPORT_FROM) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(IMPORT_FROM);
+            PyObject *from;
+            PyObject *res;
+            from = stack_pointer[-1];
+            TIER_ONE_ONLY
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            res = import_from(tstate, from, name);
+            if (res == NULL) goto error;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(LOAD_ASSERTION_ERROR) {
-            PyObject *value;
-            #line 978 "Python/bytecodes.c"
-            value = Py_NewRef(PyExc_AssertionError);
-            #line 1354 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
+        TARGET(IMPORT_NAME) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(IMPORT_NAME);
+            PyObject *fromlist;
+            PyObject *level;
+            PyObject *res;
+            fromlist = stack_pointer[-1];
+            level = stack_pointer[-2];
+            TIER_ONE_ONLY
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            res = import_name(tstate, frame, name, fromlist, level);
+            Py_DECREF(level);
+            Py_DECREF(fromlist);
+            if (res == NULL) goto pop_2_error;
+            stack_pointer[-2] = res;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(LOAD_BUILD_CLASS) {
-            PyObject *bc;
-            #line 982 "Python/bytecodes.c"
-            if (PyDict_CheckExact(BUILTINS())) {
-                bc = _PyDict_GetItemWithError(BUILTINS(),
-                                              &_Py_ID(__build_class__));
-                if (bc == NULL) {
-                    if (!_PyErr_Occurred(tstate)) {
-                        _PyErr_SetString(tstate, PyExc_NameError,
-                                         "__build_class__ not found");
-                    }
-                    if (true) goto error;
-                }
-                Py_INCREF(bc);
-            }
-            else {
-                bc = PyObject_GetItem(BUILTINS(), &_Py_ID(__build_class__));
-                if (bc == NULL) {
-                    if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError))
-                        _PyErr_SetString(tstate, PyExc_NameError,
-                                         "__build_class__ not found");
-                    if (true) goto error;
-                }
-            }
-            #line 1384 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = bc;
-            DISPATCH();
+        TARGET(INSTRUMENTED_CALL) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(INSTRUMENTED_CALL);
+            int is_meth = PEEK(oparg + 1) != NULL;
+            int total_args = oparg + is_meth;
+            PyObject *function = PEEK(oparg + 2);
+            PyObject *arg = total_args == 0 ?
+            &_PyInstrumentation_MISSING : PEEK(total_args);
+            int err = _Py_call_instrumentation_2args(
+                tstate, PY_MONITORING_EVENT_CALL,
+                frame, this_instr, function, arg);
+            if (err) goto error;
+            INCREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+            GO_TO_INSTRUCTION(CALL);
         }
 
-        TARGET(STORE_NAME) {
-            PyObject *v = stack_pointer[-1];
-            #line 1006 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            PyObject *ns = LOCALS();
-            int err;
-            if (ns == NULL) {
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "no locals found when storing %R", name);
-            #line 1399 "Python/generated_cases.c.h"
-                Py_DECREF(v);
-            #line 1013 "Python/bytecodes.c"
-                if (true) goto pop_1_error;
-            }
-            if (PyDict_CheckExact(ns))
-                err = PyDict_SetItem(ns, name, v);
-            else
-                err = PyObject_SetItem(ns, name, v);
-            #line 1408 "Python/generated_cases.c.h"
-            Py_DECREF(v);
-            #line 1020 "Python/bytecodes.c"
-            if (err) goto pop_1_error;
-            #line 1412 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            DISPATCH();
+        TARGET(INSTRUMENTED_CALL_FUNCTION_EX) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_CALL_FUNCTION_EX);
+            GO_TO_INSTRUCTION(CALL_FUNCTION_EX);
         }
 
-        TARGET(DELETE_NAME) {
-            #line 1024 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            PyObject *ns = LOCALS();
-            int err;
-            if (ns == NULL) {
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "no locals when deleting %R", name);
-                goto error;
-            }
-            err = PyObject_DelItem(ns, name);
-            // Can't use ERROR_IF here.
-            if (err != 0) {
-                format_exc_check_arg(tstate, PyExc_NameError,
-                                     NAME_ERROR_MSG,
-                                     name);
-                goto error;
-            }
-            #line 1435 "Python/generated_cases.c.h"
-            DISPATCH();
+        TARGET(INSTRUMENTED_CALL_KW) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_CALL_KW);
+            int is_meth = PEEK(oparg + 2) != NULL;
+            int total_args = oparg + is_meth;
+            PyObject *function = PEEK(oparg + 3);
+            PyObject *arg = total_args == 0 ? &_PyInstrumentation_MISSING
+        : PEEK(total_args + 1);
+            int err = _Py_call_instrumentation_2args(
+                tstate, PY_MONITORING_EVENT_CALL,
+                frame, this_instr, function, arg);
+            if (err) goto error;
+            GO_TO_INSTRUCTION(CALL_KW);
         }
 
-        TARGET(UNPACK_SEQUENCE) {
-            PREDICTED(UNPACK_SEQUENCE);
-            static_assert(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE == 1, "incorrect cache size");
-            PyObject *seq = stack_pointer[-1];
-            #line 1050 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PyUnpackSequenceCache *cache = (_PyUnpackSequenceCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_UnpackSequence(seq, next_instr, oparg);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(UNPACK_SEQUENCE, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            PyObject **top = stack_pointer + oparg - 1;
-            int res = unpack_iterable(tstate, seq, oparg, -1, top);
-            #line 1456 "Python/generated_cases.c.h"
-            Py_DECREF(seq);
-            #line 1063 "Python/bytecodes.c"
-            if (res == 0) goto pop_1_error;
-            #line 1460 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            STACK_GROW(oparg);
+        TARGET(INSTRUMENTED_END_FOR) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_END_FOR);
+            PyObject *value;
+            PyObject *receiver;
+            value = stack_pointer[-1];
+            receiver = stack_pointer[-2];
+            TIER_ONE_ONLY
+            /* Need to create a fake StopIteration error here,
+             * to conform to PEP 380 */
+            if (PyGen_Check(receiver)) {
+                PyErr_SetObject(PyExc_StopIteration, value);
+                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                    GOTO_ERROR(error);
+                }
+                PyErr_SetRaisedException(NULL);
+            }
+            Py_DECREF(receiver);
+            Py_DECREF(value);
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(UNPACK_SEQUENCE_TWO_TUPLE) {
-            PyObject *seq = stack_pointer[-1];
-            PyObject **values = stack_pointer - (1);
-            #line 1067 "Python/bytecodes.c"
-            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
-            DEOPT_IF(PyTuple_GET_SIZE(seq) != 2, UNPACK_SEQUENCE);
-            assert(oparg == 2);
-            STAT_INC(UNPACK_SEQUENCE, hit);
-            values[0] = Py_NewRef(PyTuple_GET_ITEM(seq, 1));
-            values[1] = Py_NewRef(PyTuple_GET_ITEM(seq, 0));
-            #line 1477 "Python/generated_cases.c.h"
-            Py_DECREF(seq);
-            STACK_SHRINK(1);
-            STACK_GROW(oparg);
+        TARGET(INSTRUMENTED_END_SEND) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_END_SEND);
+            PyObject *value;
+            PyObject *receiver;
+            value = stack_pointer[-1];
+            receiver = stack_pointer[-2];
+            TIER_ONE_ONLY
+            if (PyGen_Check(receiver) || PyCoro_CheckExact(receiver)) {
+                PyErr_SetObject(PyExc_StopIteration, value);
+                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                    GOTO_ERROR(error);
+                }
+                PyErr_SetRaisedException(NULL);
+            }
+            Py_DECREF(receiver);
+            stack_pointer[-2] = value;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(UNPACK_SEQUENCE_TUPLE) {
-            PyObject *seq = stack_pointer[-1];
-            PyObject **values = stack_pointer - (1);
-            #line 1077 "Python/bytecodes.c"
-            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
-            DEOPT_IF(PyTuple_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
-            STAT_INC(UNPACK_SEQUENCE, hit);
-            PyObject **items = _PyTuple_ITEMS(seq);
-            for (int i = oparg; --i >= 0; ) {
-                *values++ = Py_NewRef(items[i]);
+        TARGET(INSTRUMENTED_FOR_ITER) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_FOR_ITER);
+            _Py_CODEUNIT *target;
+            PyObject *iter = TOP();
+            PyObject *next = (*Py_TYPE(iter)->tp_iternext)(iter);
+            if (next != NULL) {
+                PUSH(next);
+                target = next_instr;
             }
-            #line 1496 "Python/generated_cases.c.h"
-            Py_DECREF(seq);
-            STACK_SHRINK(1);
-            STACK_GROW(oparg);
-            next_instr += 1;
+            else {
+                if (_PyErr_Occurred(tstate)) {
+                    if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
+                        GOTO_ERROR(error);
+                    }
+                    monitor_raise(tstate, frame, this_instr);
+                    _PyErr_Clear(tstate);
+                }
+                /* iterator ended normally */
+                assert(next_instr[oparg].op.code == END_FOR ||
+                       next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
+                STACK_SHRINK(1);
+                Py_DECREF(iter);
+                /* Skip END_FOR */
+                target = next_instr + oparg + 1;
+            }
+            INSTRUMENTED_JUMP(this_instr, target, PY_MONITORING_EVENT_BRANCH);
             DISPATCH();
         }
 
-        TARGET(UNPACK_SEQUENCE_LIST) {
-            PyObject *seq = stack_pointer[-1];
-            PyObject **values = stack_pointer - (1);
-            #line 1088 "Python/bytecodes.c"
-            DEOPT_IF(!PyList_CheckExact(seq), UNPACK_SEQUENCE);
-            DEOPT_IF(PyList_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
-            STAT_INC(UNPACK_SEQUENCE, hit);
-            PyObject **items = _PyList_ITEMS(seq);
-            for (int i = oparg; --i >= 0; ) {
-                *values++ = Py_NewRef(items[i]);
-            }
-            #line 1515 "Python/generated_cases.c.h"
-            Py_DECREF(seq);
-            STACK_SHRINK(1);
-            STACK_GROW(oparg);
+        TARGET(INSTRUMENTED_INSTRUCTION) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
             next_instr += 1;
-            DISPATCH();
+            INSTRUCTION_STATS(INSTRUMENTED_INSTRUCTION);
+            int next_opcode = _Py_call_instrumentation_instruction(
+                tstate, frame, this_instr);
+            if (next_opcode < 0) goto error;
+            next_instr = this_instr;
+            if (_PyOpcode_Caches[next_opcode]) {
+                INCREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+            }
+            assert(next_opcode > 0 && next_opcode < 256);
+            opcode = next_opcode;
+            DISPATCH_GOTO();
         }
 
-        TARGET(UNPACK_EX) {
-            PyObject *seq = stack_pointer[-1];
-            #line 1099 "Python/bytecodes.c"
-            int totalargs = 1 + (oparg & 0xFF) + (oparg >> 8);
-            PyObject **top = stack_pointer + totalargs - 1;
-            int res = unpack_iterable(tstate, seq, oparg & 0xFF, oparg >> 8, top);
-            #line 1529 "Python/generated_cases.c.h"
-            Py_DECREF(seq);
-            #line 1103 "Python/bytecodes.c"
-            if (res == 0) goto pop_1_error;
-            #line 1533 "Python/generated_cases.c.h"
-            STACK_GROW((oparg & 0xFF) + (oparg >> 8));
+        TARGET(INSTRUMENTED_JUMP_BACKWARD) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_JUMP_BACKWARD);
+            CHECK_EVAL_BREAKER();
+            INSTRUMENTED_JUMP(this_instr, next_instr - oparg, PY_MONITORING_EVENT_JUMP);
             DISPATCH();
         }
 
-        TARGET(STORE_ATTR) {
-            PREDICTED(STORE_ATTR);
-            static_assert(INLINE_CACHE_ENTRIES_STORE_ATTR == 4, "incorrect cache size");
-            PyObject *owner = stack_pointer[-1];
-            PyObject *v = stack_pointer[-2];
-            uint16_t counter = read_u16(&next_instr[0].cache);
-            #line 1114 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
-                PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-                next_instr--;
-                _Py_Specialize_StoreAttr(owner, next_instr, name);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(STORE_ATTR, deferred);
-            _PyAttrCache *cache = (_PyAttrCache *)next_instr;
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #else
-            (void)counter;  // Unused.
-            #endif  /* ENABLE_SPECIALIZATION */
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            int err = PyObject_SetAttr(owner, name, v);
-            #line 1560 "Python/generated_cases.c.h"
-            Py_DECREF(v);
-            Py_DECREF(owner);
-            #line 1130 "Python/bytecodes.c"
-            if (err) goto pop_2_error;
-            #line 1565 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            next_instr += 4;
+        TARGET(INSTRUMENTED_JUMP_FORWARD) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_JUMP_FORWARD);
+            INSTRUMENTED_JUMP(this_instr, next_instr + oparg, PY_MONITORING_EVENT_JUMP);
             DISPATCH();
         }
 
-        TARGET(DELETE_ATTR) {
-            PyObject *owner = stack_pointer[-1];
-            #line 1134 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            int err = PyObject_SetAttr(owner, name, (PyObject *)NULL);
-            #line 1576 "Python/generated_cases.c.h"
-            Py_DECREF(owner);
-            #line 1137 "Python/bytecodes.c"
-            if (err) goto pop_1_error;
-            #line 1580 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            DISPATCH();
+        TARGET(INSTRUMENTED_LOAD_SUPER_ATTR) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_LOAD_SUPER_ATTR);
+            // cancel out the decrement that will happen in LOAD_SUPER_ATTR; we
+            // don't want to specialize instrumented instructions
+            INCREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+            GO_TO_INSTRUCTION(LOAD_SUPER_ATTR);
         }
 
-        TARGET(STORE_GLOBAL) {
-            PyObject *v = stack_pointer[-1];
-            #line 1141 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            int err = PyDict_SetItem(GLOBALS(), name, v);
-            #line 1590 "Python/generated_cases.c.h"
-            Py_DECREF(v);
-            #line 1144 "Python/bytecodes.c"
-            if (err) goto pop_1_error;
-            #line 1594 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+        TARGET(INSTRUMENTED_POP_JUMP_IF_FALSE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_FALSE);
+            PyObject *cond = POP();
+            assert(PyBool_Check(cond));
+            int flag = Py_IsFalse(cond);
+            int offset = flag * oparg;
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
             DISPATCH();
         }
 
-        TARGET(DELETE_GLOBAL) {
-            #line 1148 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            int err;
-            err = PyDict_DelItem(GLOBALS(), name);
-            // Can't use ERROR_IF here.
-            if (err != 0) {
-                if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                    format_exc_check_arg(tstate, PyExc_NameError,
-                                         NAME_ERROR_MSG, name);
-                }
-                goto error;
+        TARGET(INSTRUMENTED_POP_JUMP_IF_NONE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_NONE);
+            PyObject *value = POP();
+            int flag = Py_IsNone(value);
+            int offset;
+            if (flag) {
+                offset = oparg;
+            }
+            else {
+                Py_DECREF(value);
+                offset = 0;
             }
-            #line 1612 "Python/generated_cases.c.h"
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
             DISPATCH();
         }
 
-        TARGET(LOAD_NAME) {
-            PyObject *v;
-            #line 1162 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            PyObject *locals = LOCALS();
-            if (locals == NULL) {
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "no locals when loading %R", name);
-                goto error;
-            }
-            if (PyDict_CheckExact(locals)) {
-                v = PyDict_GetItemWithError(locals, name);
-                if (v != NULL) {
-                    Py_INCREF(v);
-                }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto error;
-                }
+        TARGET(INSTRUMENTED_POP_JUMP_IF_NOT_NONE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_NOT_NONE);
+            PyObject *value = POP();
+            int offset;
+            int nflag = Py_IsNone(value);
+            if (nflag) {
+                offset = 0;
             }
             else {
-                v = PyObject_GetItem(locals, name);
-                if (v == NULL) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_KeyError))
-                        goto error;
-                    _PyErr_Clear(tstate);
-                }
-            }
-            if (v == NULL) {
-                v = PyDict_GetItemWithError(GLOBALS(), name);
-                if (v != NULL) {
-                    Py_INCREF(v);
-                }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto error;
-                }
-                else {
-                    if (PyDict_CheckExact(BUILTINS())) {
-                        v = PyDict_GetItemWithError(BUILTINS(), name);
-                        if (v == NULL) {
-                            if (!_PyErr_Occurred(tstate)) {
-                                format_exc_check_arg(
-                                        tstate, PyExc_NameError,
-                                        NAME_ERROR_MSG, name);
-                            }
-                            goto error;
-                        }
-                        Py_INCREF(v);
-                    }
-                    else {
-                        v = PyObject_GetItem(BUILTINS(), name);
-                        if (v == NULL) {
-                            if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                                format_exc_check_arg(
-                                            tstate, PyExc_NameError,
-                                            NAME_ERROR_MSG, name);
-                            }
-                            goto error;
-                        }
-                    }
-                }
+                Py_DECREF(value);
+                offset = oparg;
             }
-            #line 1677 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = v;
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | !nflag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
             DISPATCH();
         }
 
-        TARGET(LOAD_GLOBAL) {
-            PREDICTED(LOAD_GLOBAL);
-            static_assert(INLINE_CACHE_ENTRIES_LOAD_GLOBAL == 4, "incorrect cache size");
-            PyObject *null = NULL;
-            PyObject *v;
-            #line 1229 "Python/bytecodes.c"
+        TARGET(INSTRUMENTED_POP_JUMP_IF_TRUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_TRUE);
+            PyObject *cond = POP();
+            assert(PyBool_Check(cond));
+            int flag = Py_IsTrue(cond);
+            int offset = flag * oparg;
             #if ENABLE_SPECIALIZATION
-            _PyLoadGlobalCache *cache = (_PyLoadGlobalCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-                next_instr--;
-                _Py_Specialize_LoadGlobal(GLOBALS(), BUILTINS(), next_instr, name);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(LOAD_GLOBAL, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-            if (PyDict_CheckExact(GLOBALS())
-                && PyDict_CheckExact(BUILTINS()))
-            {
-                v = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
-                                       (PyDictObject *)BUILTINS(),
-                                       name);
-                if (v == NULL) {
-                    if (!_PyErr_Occurred(tstate)) {
-                        /* _PyDict_LoadGlobal() returns NULL without raising
-                         * an exception if the key doesn't exist */
-                        format_exc_check_arg(tstate, PyExc_NameError,
-                                             NAME_ERROR_MSG, name);
-                    }
-                    if (true) goto error;
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            INSTRUMENTED_JUMP(this_instr, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
+            DISPATCH();
+        }
+
+        TARGET(INSTRUMENTED_RESUME) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_RESUME);
+            uintptr_t global_version = _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker) & ~_PY_EVAL_EVENTS_MASK;
+            uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            if (code_version != global_version) {
+                if (_Py_Instrument(_PyFrame_GetCode(frame), tstate->interp)) {
+                    GOTO_ERROR(error);
                 }
-                Py_INCREF(v);
+                next_instr = this_instr;
             }
             else {
-                /* Slow-path if globals or builtins is not a dict */
-
-                /* namespace 1: globals */
-                v = PyObject_GetItem(GLOBALS(), name);
-                if (v == NULL) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) goto error;
-                    _PyErr_Clear(tstate);
-
-                    /* namespace 2: builtins */
-                    v = PyObject_GetItem(BUILTINS(), name);
-                    if (v == NULL) {
-                        if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                            format_exc_check_arg(
-                                        tstate, PyExc_NameError,
-                                        NAME_ERROR_MSG, name);
-                        }
-                        if (true) goto error;
-                    }
+                if ((oparg & RESUME_OPARG_LOCATION_MASK) < RESUME_AFTER_YIELD_FROM) {
+                    CHECK_EVAL_BREAKER();
+                }
+                _PyFrame_SetStackPointer(frame, stack_pointer);
+                int err = _Py_call_instrumentation(
+                    tstate, oparg > 0, frame, this_instr);
+                stack_pointer = _PyFrame_GetStackPointer(frame);
+                if (err) goto error;
+                if (frame->instr_ptr != this_instr) {
+                    /* Instrumentation has jumped */
+                    next_instr = this_instr;
+                    DISPATCH();
                 }
             }
-            null = NULL;
-            #line 1740 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = v;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = null; }
-            next_instr += 4;
             DISPATCH();
         }
 
-        TARGET(LOAD_GLOBAL_MODULE) {
-            PyObject *null = NULL;
-            PyObject *res;
-            uint16_t index = read_u16(&next_instr[1].cache);
-            uint16_t version = read_u16(&next_instr[2].cache);
-            #line 1283 "Python/bytecodes.c"
-            DEOPT_IF(!PyDict_CheckExact(GLOBALS()), LOAD_GLOBAL);
-            PyDictObject *dict = (PyDictObject *)GLOBALS();
-            DEOPT_IF(dict->ma_keys->dk_version != version, LOAD_GLOBAL);
-            assert(DK_IS_UNICODE(dict->ma_keys));
-            PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(dict->ma_keys);
-            res = entries[index].me_value;
-            DEOPT_IF(res == NULL, LOAD_GLOBAL);
-            Py_INCREF(res);
-            STAT_INC(LOAD_GLOBAL, hit);
-            null = NULL;
-            #line 1765 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = null; }
-            next_instr += 4;
-            DISPATCH();
+        TARGET(INSTRUMENTED_RETURN_CONST) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_RETURN_CONST);
+            PyObject *retval = GETITEM(FRAME_CO_CONSTS, oparg);
+            int err = _Py_call_instrumentation_arg(
+                tstate, PY_MONITORING_EVENT_PY_RETURN,
+                frame, this_instr, retval);
+            if (err) GOTO_ERROR(error);
+            Py_INCREF(retval);
+            assert(EMPTY());
+            _PyFrame_SetStackPointer(frame, stack_pointer);
+            _Py_LeaveRecursiveCallPy(tstate);
+            assert(frame != &entry_frame);
+            // GH-99729: We need to unlink the frame *before* clearing it:
+            _PyInterpreterFrame *dying = frame;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
+            _PyFrame_StackPush(frame, retval);
+            LOAD_IP(frame->return_offset);
+            goto resume_frame;
         }
 
-        TARGET(LOAD_GLOBAL_BUILTIN) {
-            PyObject *null = NULL;
-            PyObject *res;
-            uint16_t index = read_u16(&next_instr[1].cache);
-            uint16_t mod_version = read_u16(&next_instr[2].cache);
-            uint16_t bltn_version = read_u16(&next_instr[3].cache);
-            #line 1296 "Python/bytecodes.c"
-            DEOPT_IF(!PyDict_CheckExact(GLOBALS()), LOAD_GLOBAL);
-            DEOPT_IF(!PyDict_CheckExact(BUILTINS()), LOAD_GLOBAL);
-            PyDictObject *mdict = (PyDictObject *)GLOBALS();
-            PyDictObject *bdict = (PyDictObject *)BUILTINS();
-            assert(opcode == LOAD_GLOBAL_BUILTIN);
-            DEOPT_IF(mdict->ma_keys->dk_version != mod_version, LOAD_GLOBAL);
-            DEOPT_IF(bdict->ma_keys->dk_version != bltn_version, LOAD_GLOBAL);
-            assert(DK_IS_UNICODE(bdict->ma_keys));
-            PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(bdict->ma_keys);
-            res = entries[index].me_value;
-            DEOPT_IF(res == NULL, LOAD_GLOBAL);
-            Py_INCREF(res);
-            STAT_INC(LOAD_GLOBAL, hit);
-            null = NULL;
-            #line 1795 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = null; }
-            next_instr += 4;
-            DISPATCH();
+        TARGET(INSTRUMENTED_RETURN_VALUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_RETURN_VALUE);
+            PyObject *retval;
+            retval = stack_pointer[-1];
+            int err = _Py_call_instrumentation_arg(
+                tstate, PY_MONITORING_EVENT_PY_RETURN,
+                frame, this_instr, retval);
+            if (err) GOTO_ERROR(error);
+            STACK_SHRINK(1);
+            assert(EMPTY());
+            _PyFrame_SetStackPointer(frame, stack_pointer);
+            _Py_LeaveRecursiveCallPy(tstate);
+            assert(frame != &entry_frame);
+            // GH-99729: We need to unlink the frame *before* clearing it:
+            _PyInterpreterFrame *dying = frame;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
+            _PyFrame_StackPush(frame, retval);
+            LOAD_IP(frame->return_offset);
+            goto resume_frame;
         }
 
-        TARGET(DELETE_FAST) {
-            #line 1313 "Python/bytecodes.c"
-            PyObject *v = GETLOCAL(oparg);
-            if (v == NULL) goto unbound_local_error;
-            SETLOCAL(oparg, NULL);
-            #line 1809 "Python/generated_cases.c.h"
-            DISPATCH();
+        TARGET(INSTRUMENTED_YIELD_VALUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INSTRUMENTED_YIELD_VALUE);
+            PyObject *retval;
+            retval = stack_pointer[-1];
+            assert(frame != &entry_frame);
+            frame->instr_ptr = next_instr;
+            PyGenObject *gen = _PyFrame_GetGenerator(frame);
+            assert(FRAME_SUSPENDED_YIELD_FROM == FRAME_SUSPENDED + 1);
+            assert(oparg == 0 || oparg == 1);
+            gen->gi_frame_state = FRAME_SUSPENDED + oparg;
+            _PyFrame_SetStackPointer(frame, stack_pointer - 1);
+            int err = _Py_call_instrumentation_arg(
+                tstate, PY_MONITORING_EVENT_PY_YIELD,
+                frame, this_instr, retval);
+            if (err) GOTO_ERROR(error);
+            tstate->exc_info = gen->gi_exc_state.previous_item;
+            gen->gi_exc_state.previous_item = NULL;
+            _Py_LeaveRecursiveCallPy(tstate);
+            _PyInterpreterFrame *gen_frame = frame;
+            frame = tstate->current_frame = frame->previous;
+            gen_frame->previous = NULL;
+            _PyFrame_StackPush(frame, retval);
+            /* We don't know which of these is relevant here, so keep them equal */
+            assert(INLINE_CACHE_ENTRIES_SEND == INLINE_CACHE_ENTRIES_FOR_ITER);
+            LOAD_IP(1 + INLINE_CACHE_ENTRIES_SEND);
+            goto resume_frame;
         }
 
-        TARGET(MAKE_CELL) {
-            #line 1319 "Python/bytecodes.c"
-            // "initial" is probably NULL but not if it's an arg (or set
-            // via PyFrame_LocalsToFast() before MAKE_CELL has run).
-            PyObject *initial = GETLOCAL(oparg);
-            PyObject *cell = PyCell_New(initial);
-            if (cell == NULL) {
-                goto resume_with_error;
-            }
-            SETLOCAL(oparg, cell);
-            #line 1823 "Python/generated_cases.c.h"
-            DISPATCH();
+        TARGET(INTERPRETER_EXIT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(INTERPRETER_EXIT);
+            PyObject *retval;
+            retval = stack_pointer[-1];
+            assert(frame == &entry_frame);
+            assert(_PyFrame_IsIncomplete(frame));
+            /* Restore previous frame and return. */
+            tstate->current_frame = frame->previous;
+            assert(!_PyErr_Occurred(tstate));
+            tstate->c_recursion_remaining += PY_EVAL_C_STACK_UNITS;
+            return retval;
         }
 
-        TARGET(DELETE_DEREF) {
-            #line 1330 "Python/bytecodes.c"
-            PyObject *cell = GETLOCAL(oparg);
-            PyObject *oldobj = PyCell_GET(cell);
-            // Can't use ERROR_IF here.
-            // Fortunately we don't need its superpower.
-            if (oldobj == NULL) {
-                format_exc_unbound(tstate, frame->f_code, oparg);
-                goto error;
-            }
-            PyCell_SET(cell, NULL);
-            Py_DECREF(oldobj);
-            #line 1839 "Python/generated_cases.c.h"
+        TARGET(IS_OP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(IS_OP);
+            PyObject *right;
+            PyObject *left;
+            PyObject *b;
+            right = stack_pointer[-1];
+            left = stack_pointer[-2];
+            int res = Py_Is(left, right) ^ oparg;
+            Py_DECREF(left);
+            Py_DECREF(right);
+            b = res ? Py_True : Py_False;
+            stack_pointer[-2] = b;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(LOAD_CLASSDEREF) {
-            PyObject *value;
-            #line 1343 "Python/bytecodes.c"
-            PyObject *name, *locals = LOCALS();
-            assert(locals);
-            assert(oparg >= 0 && oparg < frame->f_code->co_nlocalsplus);
-            name = PyTuple_GET_ITEM(frame->f_code->co_localsplusnames, oparg);
-            if (PyDict_CheckExact(locals)) {
-                value = PyDict_GetItemWithError(locals, name);
-                if (value != NULL) {
-                    Py_INCREF(value);
-                }
-                else if (_PyErr_Occurred(tstate)) {
-                    goto error;
+        TARGET(JUMP_BACKWARD) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(JUMP_BACKWARD);
+            CHECK_EVAL_BREAKER();
+            assert(oparg <= INSTR_OFFSET());
+            JUMPBY(-oparg);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache += (1 << OPTIMIZER_BITS_IN_COUNTER);
+            /* We are using unsigned values, but we really want signed values, so
+             * do the 2s complement comparison manually */
+            uint16_t ucounter = this_instr[1].cache + (1 << 15);
+            uint16_t threshold = tstate->interp->optimizer_backedge_threshold + (1 << 15);
+            // Double-check that the opcode isn't instrumented or something:
+            if (ucounter > threshold && this_instr->op.code == JUMP_BACKWARD) {
+                OPT_STAT_INC(attempts);
+                int optimized = _PyOptimizer_BackEdge(frame, this_instr, next_instr, stack_pointer);
+                if (optimized < 0) goto error;
+                if (optimized) {
+                    // Rewind and enter the executor:
+                    assert(this_instr->op.code == ENTER_EXECUTOR);
+                    next_instr = this_instr;
+                    this_instr[1].cache &= ((1 << OPTIMIZER_BITS_IN_COUNTER) - 1);
                 }
-            }
-            else {
-                value = PyObject_GetItem(locals, name);
-                if (value == NULL) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-                        goto error;
+                else {
+                    int backoff = this_instr[1].cache & ((1 << OPTIMIZER_BITS_IN_COUNTER) - 1);
+                    if (backoff < MINIMUM_TIER2_BACKOFF) {
+                        backoff = MINIMUM_TIER2_BACKOFF;
                     }
-                    _PyErr_Clear(tstate);
-                }
-            }
-            if (!value) {
-                PyObject *cell = GETLOCAL(oparg);
-                value = PyCell_GET(cell);
-                if (value == NULL) {
-                    format_exc_unbound(tstate, frame->f_code, oparg);
-                    goto error;
+                    else if (backoff < 15 - OPTIMIZER_BITS_IN_COUNTER) {
+                        backoff++;
+                    }
+                    assert(backoff <= 15 - OPTIMIZER_BITS_IN_COUNTER);
+                    this_instr[1].cache = ((1 << 16) - ((1 << OPTIMIZER_BITS_IN_COUNTER) << backoff)) | backoff;
                 }
-                Py_INCREF(value);
-            }
-            #line 1877 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_DEREF) {
-            PyObject *value;
-            #line 1377 "Python/bytecodes.c"
-            PyObject *cell = GETLOCAL(oparg);
-            value = PyCell_GET(cell);
-            if (value == NULL) {
-                format_exc_unbound(tstate, frame->f_code, oparg);
-                if (true) goto error;
-            }
-            Py_INCREF(value);
-            #line 1893 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = value;
-            DISPATCH();
-        }
-
-        TARGET(STORE_DEREF) {
-            PyObject *v = stack_pointer[-1];
-            #line 1387 "Python/bytecodes.c"
-            PyObject *cell = GETLOCAL(oparg);
-            PyObject *oldobj = PyCell_GET(cell);
-            PyCell_SET(cell, v);
-            Py_XDECREF(oldobj);
-            #line 1906 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-
-        TARGET(COPY_FREE_VARS) {
-            #line 1394 "Python/bytecodes.c"
-            /* Copy closure variables to free variables */
-            PyCodeObject *co = frame->f_code;
-            assert(PyFunction_Check(frame->f_funcobj));
-            PyObject *closure = ((PyFunctionObject *)frame->f_funcobj)->func_closure;
-            assert(oparg == co->co_nfreevars);
-            int offset = co->co_nlocalsplus - oparg;
-            for (int i = 0; i < oparg; ++i) {
-                PyObject *o = PyTuple_GET_ITEM(closure, i);
-                frame->localsplus[offset + i] = Py_NewRef(o);
             }
-            #line 1923 "Python/generated_cases.c.h"
+            #endif  /* ENABLE_SPECIALIZATION */
             DISPATCH();
         }
 
-        TARGET(BUILD_STRING) {
-            PyObject **pieces = (stack_pointer - oparg);
-            PyObject *str;
-            #line 1407 "Python/bytecodes.c"
-            str = _PyUnicode_JoinArray(&_Py_STR(empty), pieces, oparg);
-            #line 1932 "Python/generated_cases.c.h"
-            for (int _i = oparg; --_i >= 0;) {
-                Py_DECREF(pieces[_i]);
-            }
-            #line 1409 "Python/bytecodes.c"
-            if (str == NULL) { STACK_SHRINK(oparg); goto error; }
-            #line 1938 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_GROW(1);
-            stack_pointer[-1] = str;
+        TARGET(JUMP_BACKWARD_NO_INTERRUPT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(JUMP_BACKWARD_NO_INTERRUPT);
+            /* This bytecode is used in the `yield from` or `await` loop.
+             * If there is an interrupt, we want it handled in the innermost
+             * generator or coroutine, so we deliberately do not check it here.
+             * (see bpo-30039).
+             */
+            JUMPBY(-oparg);
             DISPATCH();
         }
 
-        TARGET(BUILD_TUPLE) {
-            PyObject **values = (stack_pointer - oparg);
-            PyObject *tup;
-            #line 1413 "Python/bytecodes.c"
-            tup = _PyTuple_FromArraySteal(values, oparg);
-            if (tup == NULL) { STACK_SHRINK(oparg); goto error; }
-            #line 1951 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_GROW(1);
-            stack_pointer[-1] = tup;
+        TARGET(JUMP_FORWARD) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(JUMP_FORWARD);
+            JUMPBY(oparg);
             DISPATCH();
         }
 
-        TARGET(BUILD_LIST) {
-            PyObject **values = (stack_pointer - oparg);
+        TARGET(LIST_APPEND) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LIST_APPEND);
+            PyObject *v;
             PyObject *list;
-            #line 1418 "Python/bytecodes.c"
-            list = _PyList_FromArraySteal(values, oparg);
-            if (list == NULL) { STACK_SHRINK(oparg); goto error; }
-            #line 1964 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_GROW(1);
-            stack_pointer[-1] = list;
+            v = stack_pointer[-1];
+            list = stack_pointer[-2 - (oparg-1)];
+            if (_PyList_AppendTakeRef((PyListObject *)list, v) < 0) goto pop_1_error;
+            stack_pointer += -1;
             DISPATCH();
         }
 
         TARGET(LIST_EXTEND) {
-            PyObject *iterable = stack_pointer[-1];
-            PyObject *list = stack_pointer[-(2 + (oparg-1))];
-            #line 1423 "Python/bytecodes.c"
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LIST_EXTEND);
+            PyObject *iterable;
+            PyObject *list;
+            iterable = stack_pointer[-1];
+            list = stack_pointer[-2 - (oparg-1)];
             PyObject *none_val = _PyList_Extend((PyListObject *)list, iterable);
             if (none_val == NULL) {
                 if (_PyErr_ExceptionMatches(tstate, PyExc_TypeError) &&
-                   (Py_TYPE(iterable)->tp_iter == NULL && !PySequence_Check(iterable)))
+                    (Py_TYPE(iterable)->tp_iter == NULL && !PySequence_Check(iterable)))
                 {
                     _PyErr_Clear(tstate);
                     _PyErr_Format(tstate, PyExc_TypeError,
-                          "Value after * must be an iterable, not %.200s",
-                          Py_TYPE(iterable)->tp_name);
+                                  "Value after * must be an iterable, not %.200s",
+                                  Py_TYPE(iterable)->tp_name);
                 }
-            #line 1985 "Python/generated_cases.c.h"
                 Py_DECREF(iterable);
-            #line 1434 "Python/bytecodes.c"
                 if (true) goto pop_1_error;
             }
-            Py_DECREF(none_val);
-            #line 1991 "Python/generated_cases.c.h"
-            Py_DECREF(iterable);
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-
-        TARGET(SET_UPDATE) {
-            PyObject *iterable = stack_pointer[-1];
-            PyObject *set = stack_pointer[-(2 + (oparg-1))];
-            #line 1441 "Python/bytecodes.c"
-            int err = _PySet_Update(set, iterable);
-            #line 2002 "Python/generated_cases.c.h"
+            assert(Py_IsNone(none_val));
             Py_DECREF(iterable);
-            #line 1443 "Python/bytecodes.c"
-            if (err < 0) goto pop_1_error;
-            #line 2006 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-
-        TARGET(BUILD_SET) {
-            PyObject **values = (stack_pointer - oparg);
-            PyObject *set;
-            #line 1447 "Python/bytecodes.c"
-            set = PySet_New(NULL);
-            if (set == NULL)
-                goto error;
-            int err = 0;
-            for (int i = 0; i < oparg; i++) {
-                PyObject *item = values[i];
-                if (err == 0)
-                    err = PySet_Add(set, item);
-                Py_DECREF(item);
-            }
-            if (err != 0) {
-                Py_DECREF(set);
-                if (true) { STACK_SHRINK(oparg); goto error; }
-            }
-            #line 2029 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_GROW(1);
-            stack_pointer[-1] = set;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(BUILD_MAP) {
-            PyObject **values = (stack_pointer - oparg*2);
-            PyObject *map;
-            #line 1464 "Python/bytecodes.c"
-            map = _PyDict_FromItems(
-                    values, 2,
-                    values+1, 2,
-                    oparg);
-            if (map == NULL)
-                goto error;
-
-            #line 2047 "Python/generated_cases.c.h"
-            for (int _i = oparg*2; --_i >= 0;) {
-                Py_DECREF(values[_i]);
-            }
-            #line 1472 "Python/bytecodes.c"
-            if (map == NULL) { STACK_SHRINK(oparg*2); goto error; }
-            #line 2053 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg*2);
-            STACK_GROW(1);
-            stack_pointer[-1] = map;
+        TARGET(LOAD_ASSERTION_ERROR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_ASSERTION_ERROR);
+            PyObject *value;
+            value = Py_NewRef(PyExc_AssertionError);
+            stack_pointer[0] = value;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(SETUP_ANNOTATIONS) {
-            #line 1476 "Python/bytecodes.c"
-            int err;
-            PyObject *ann_dict;
-            if (LOCALS() == NULL) {
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "no locals found when setting up annotations");
-                if (true) goto error;
-            }
-            /* check if __annotations__ in locals()... */
-            if (PyDict_CheckExact(LOCALS())) {
-                ann_dict = _PyDict_GetItemWithError(LOCALS(),
-                                                    &_Py_ID(__annotations__));
-                if (ann_dict == NULL) {
-                    if (_PyErr_Occurred(tstate)) goto error;
-                    /* ...if not, create a new one */
-                    ann_dict = PyDict_New();
-                    if (ann_dict == NULL) goto error;
-                    err = PyDict_SetItem(LOCALS(), &_Py_ID(__annotations__),
-                                         ann_dict);
-                    Py_DECREF(ann_dict);
-                    if (err) goto error;
+        TARGET(LOAD_ATTR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR);
+            PREDICTED(LOAD_ATTR);
+            _Py_CODEUNIT *this_instr = next_instr - 10;
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self_or_null = NULL;
+            // _SPECIALIZE_LOAD_ATTR
+            owner = stack_pointer[-1];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+                    next_instr = this_instr;
+                    _Py_Specialize_LoadAttr(owner, next_instr, name);
+                    DISPATCH_SAME_OPARG();
                 }
+                STAT_INC(LOAD_ATTR, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            else {
-                /* do the same if locals() is not a dict */
-                ann_dict = PyObject_GetItem(LOCALS(), &_Py_ID(__annotations__));
-                if (ann_dict == NULL) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) goto error;
-                    _PyErr_Clear(tstate);
-                    ann_dict = PyDict_New();
-                    if (ann_dict == NULL) goto error;
-                    err = PyObject_SetItem(LOCALS(), &_Py_ID(__annotations__),
-                                           ann_dict);
-                    Py_DECREF(ann_dict);
-                    if (err) goto error;
+            // _LOAD_ATTR
+            {
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 1);
+                if (oparg & 1) {
+                    /* Designed to work in tandem with CALL, pushes two values. */
+                    attr = NULL;
+                    if (_PyObject_GetMethod(owner, name, &attr)) {
+                        /* We can bypass temporary bound method object.
+                           meth is unbound method and obj is self.
+                           meth | self | arg1 | ... | argN
+                         */
+                        assert(attr != NULL);  // No errors on this branch
+                        self_or_null = owner;  // Transfer ownership
+                    }
+                    else {
+                        /* meth is not an unbound method (but a regular attr, or
+                           something was returned by a descriptor protocol).  Set
+                           the second element of the stack to NULL, to signal
+                           CALL that it's not a method call.
+                           NULL | meth | arg1 | ... | argN
+                         */
+                        Py_DECREF(owner);
+                        if (attr == NULL) goto pop_1_error;
+                        self_or_null = NULL;
+                    }
                 }
                 else {
-                    Py_DECREF(ann_dict);
+                    /* Classic, pushes one value. */
+                    attr = PyObject_GetAttr(owner, name);
+                    Py_DECREF(owner);
+                    if (attr == NULL) goto pop_1_error;
                 }
             }
-            #line 2101 "Python/generated_cases.c.h"
+            stack_pointer[-1] = attr;
+             if (oparg & 1) stack_pointer[0] = self_or_null;
+            stack_pointer += ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(BUILD_CONST_KEY_MAP) {
-            PyObject *keys = stack_pointer[-1];
-            PyObject **values = (stack_pointer - (1 + oparg));
-            PyObject *map;
-            #line 1518 "Python/bytecodes.c"
-            if (!PyTuple_CheckExact(keys) ||
-                PyTuple_GET_SIZE(keys) != (Py_ssize_t)oparg) {
-                _PyErr_SetString(tstate, PyExc_SystemError,
-                                 "bad BUILD_CONST_KEY_MAP keys argument");
-                goto error;  // Pop the keys and values.
+        TARGET(LOAD_ATTR_CLASS) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_CLASS);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _CHECK_ATTR_CLASS
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                DEOPT_IF(!PyType_Check(owner), LOAD_ATTR);
+                assert(type_version != 0);
+                DEOPT_IF(((PyTypeObject *)owner)->tp_version_tag != type_version, LOAD_ATTR);
             }
-            map = _PyDict_FromItems(
-                    &PyTuple_GET_ITEM(keys, 0), 1,
-                    values, 1, oparg);
-            #line 2119 "Python/generated_cases.c.h"
-            for (int _i = oparg; --_i >= 0;) {
-                Py_DECREF(values[_i]);
+            /* Skip 2 cache entries */
+            // _LOAD_ATTR_CLASS
+            {
+                PyObject *descr = read_obj(&this_instr[6].cache);
+                STAT_INC(LOAD_ATTR, hit);
+                assert(descr != NULL);
+                attr = Py_NewRef(descr);
+                null = NULL;
+                Py_DECREF(owner);
             }
-            Py_DECREF(keys);
-            #line 1528 "Python/bytecodes.c"
-            if (map == NULL) { STACK_SHRINK(oparg); goto pop_1_error; }
-            #line 2126 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            stack_pointer[-1] = map;
+            stack_pointer[-1] = attr;
+             if (oparg & 1) stack_pointer[0] = null;
+            stack_pointer += ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(DICT_UPDATE) {
-            PyObject *update = stack_pointer[-1];
-            #line 1532 "Python/bytecodes.c"
-            PyObject *dict = PEEK(oparg + 1);  // update is still on the stack
-            if (PyDict_Update(dict, update) < 0) {
-                if (_PyErr_ExceptionMatches(tstate, PyExc_AttributeError)) {
-                    _PyErr_Format(tstate, PyExc_TypeError,
-                                    "'%.200s' object is not a mapping",
-                                    Py_TYPE(update)->tp_name);
-                }
-            #line 2142 "Python/generated_cases.c.h"
-                Py_DECREF(update);
-            #line 1540 "Python/bytecodes.c"
-                if (true) goto pop_1_error;
-            }
-            #line 2147 "Python/generated_cases.c.h"
-            Py_DECREF(update);
+        TARGET(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            uint32_t type_version = read_u32(&this_instr[2].cache);
+            uint32_t func_version = read_u32(&this_instr[4].cache);
+            PyObject *getattribute = read_obj(&this_instr[6].cache);
+            assert((oparg & 1) == 0);
+            DEOPT_IF(tstate->interp->eval_frame, LOAD_ATTR);
+            PyTypeObject *cls = Py_TYPE(owner);
+            assert(type_version != 0);
+            DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
+            assert(Py_IS_TYPE(getattribute, &PyFunction_Type));
+            PyFunctionObject *f = (PyFunctionObject *)getattribute;
+            assert(func_version != 0);
+            DEOPT_IF(f->func_version != func_version, LOAD_ATTR);
+            PyCodeObject *code = (PyCodeObject *)f->func_code;
+            assert(code->co_argcount == 2);
+            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), LOAD_ATTR);
+            STAT_INC(LOAD_ATTR, hit);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 1);
+            Py_INCREF(f);
+            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, f, 2);
+            // Manipulate stack directly because we exit with DISPATCH_INLINED().
             STACK_SHRINK(1);
-            DISPATCH();
+            new_frame->localsplus[0] = owner;
+            new_frame->localsplus[1] = Py_NewRef(name);
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
+            DISPATCH_INLINED(new_frame);
         }
 
-        TARGET(DICT_MERGE) {
-            PyObject *update = stack_pointer[-1];
-            #line 1546 "Python/bytecodes.c"
-            PyObject *dict = PEEK(oparg + 1);  // update is still on the stack
-
-            if (_PyDict_MergeEx(dict, update, 2) < 0) {
-                format_kwargs_error(tstate, PEEK(3 + oparg), update);
-            #line 2160 "Python/generated_cases.c.h"
-                Py_DECREF(update);
-            #line 1551 "Python/bytecodes.c"
-                if (true) goto pop_1_error;
+        TARGET(LOAD_ATTR_INSTANCE_VALUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_INSTANCE_VALUE);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
             }
-            #line 2165 "Python/generated_cases.c.h"
-            Py_DECREF(update);
-            STACK_SHRINK(1);
-            PREDICT(CALL_FUNCTION_EX);
-            DISPATCH();
-        }
-
-        TARGET(MAP_ADD) {
-            PyObject *value = stack_pointer[-1];
-            PyObject *key = stack_pointer[-2];
-            #line 1558 "Python/bytecodes.c"
-            PyObject *dict = PEEK(oparg + 2);  // key, value are still on the stack
-            assert(PyDict_CheckExact(dict));
-            /* dict[key] = value */
-            // Do not DECREF INPUTS because the function steals the references
-            if (_PyDict_SetItem_Take2((PyDictObject *)dict, key, value) != 0) goto pop_2_error;
-            #line 2181 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            PREDICT(JUMP_BACKWARD);
-            DISPATCH();
-        }
-
-        TARGET(LOAD_SUPER_ATTR) {
-            PREDICTED(LOAD_SUPER_ATTR);
-            static_assert(INLINE_CACHE_ENTRIES_LOAD_SUPER_ATTR == 1, "incorrect cache size");
-            PyObject *self = stack_pointer[-1];
-            PyObject *class = stack_pointer[-2];
-            PyObject *global_super = stack_pointer[-3];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            #line 1573 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 2);
-            int load_method = oparg & 1;
-            #if ENABLE_SPECIALIZATION
-            _PySuperAttrCache *cache = (_PySuperAttrCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_LoadSuperAttr(global_super, class, next_instr, load_method);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(LOAD_SUPER_ATTR, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-
-            // we make no attempt to optimize here; specializations should
-            // handle any case whose performance we care about
-            PyObject *stack[] = {class, self};
-            PyObject *super = PyObject_Vectorcall(global_super, stack, oparg & 2, NULL);
-            #line 2213 "Python/generated_cases.c.h"
-            Py_DECREF(global_super);
-            Py_DECREF(class);
-            Py_DECREF(self);
-            #line 1591 "Python/bytecodes.c"
-            if (super == NULL) goto pop_3_error;
-            res = PyObject_GetAttr(super, name);
-            Py_DECREF(super);
-            if (res == NULL) goto pop_3_error;
-            #line 2222 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 1;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_SUPER_ATTR_ATTR) {
-            PyObject *self = stack_pointer[-1];
-            PyObject *class = stack_pointer[-2];
-            PyObject *global_super = stack_pointer[-3];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            #line 1598 "Python/bytecodes.c"
-            assert(!(oparg & 1));
-            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
-            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
-            STAT_INC(LOAD_SUPER_ATTR, hit);
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 2);
-            res = _PySuper_Lookup((PyTypeObject *)class, self, name, NULL);
-            #line 2244 "Python/generated_cases.c.h"
-            Py_DECREF(global_super);
-            Py_DECREF(class);
-            Py_DECREF(self);
-            #line 1605 "Python/bytecodes.c"
-            if (res == NULL) goto pop_3_error;
-            #line 2250 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 1;
+            // _CHECK_MANAGED_OBJECT_HAS_VALUES
+            {
+                assert(Py_TYPE(owner)->tp_dictoffset < 0);
+                assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+                PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+                DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv), LOAD_ATTR);
+            }
+            // _LOAD_ATTR_INSTANCE_VALUE
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+                attr = _PyDictOrValues_GetValues(dorv)->values[index];
+                DEOPT_IF(attr == NULL, LOAD_ATTR);
+                STAT_INC(LOAD_ATTR, hit);
+                Py_INCREF(attr);
+                null = NULL;
+                Py_DECREF(owner);
+            }
+            /* Skip 5 cache entries */
+            stack_pointer[-1] = attr;
+             if (oparg & 1) stack_pointer[0] = null;
+            stack_pointer += ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(LOAD_SUPER_ATTR_METHOD) {
-            PyObject *self = stack_pointer[-1];
-            PyObject *class = stack_pointer[-2];
-            PyObject *global_super = stack_pointer[-3];
-            PyObject *res2;
-            PyObject *res;
-            #line 1609 "Python/bytecodes.c"
-            assert(oparg & 1);
-            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
-            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
-            STAT_INC(LOAD_SUPER_ATTR, hit);
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 2);
-            int method_found = 0;
-            res2 = _PySuper_Lookup((PyTypeObject *)class, self, name, &method_found);
-            Py_DECREF(global_super);
-            Py_DECREF(class);
-            if (res2 == NULL) {
-                Py_DECREF(self);
-                if (true) goto pop_3_error;
+        TARGET(LOAD_ATTR_METHOD_LAZY_DICT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_METHOD_LAZY_DICT);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
             }
-            if (method_found) {
-                res = self; // transfer ownership
-            } else {
-                Py_DECREF(self);
-                res = res2;
-                res2 = NULL;
+            // _CHECK_ATTR_METHOD_LAZY_DICT
+            {
+                Py_ssize_t dictoffset = Py_TYPE(owner)->tp_dictoffset;
+                assert(dictoffset > 0);
+                PyObject *dict = *(PyObject **)((char *)owner + dictoffset);
+                /* This object has a __dict__, just not yet created */
+                DEOPT_IF(dict != NULL, LOAD_ATTR);
+            }
+            /* Skip 2 cache entries */
+            // _LOAD_ATTR_METHOD_LAZY_DICT
+            {
+                PyObject *descr = read_obj(&this_instr[6].cache);
+                assert(oparg & 1);
+                STAT_INC(LOAD_ATTR, hit);
+                assert(descr != NULL);
+                assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+                attr = Py_NewRef(descr);
+                self = owner;
             }
-            #line 2286 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            stack_pointer[-2] = res2;
-            next_instr += 1;
+            stack_pointer[-1] = attr;
+             if (1) stack_pointer[0] = self;
+            stack_pointer += (((1) ? 1 : 0));
             DISPATCH();
         }
 
-        TARGET(LOAD_ATTR) {
-            PREDICTED(LOAD_ATTR);
+        TARGET(LOAD_ATTR_METHOD_NO_DICT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_METHOD_NO_DICT);
             static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
-            PyObject *owner = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            #line 1646 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PyAttrCache *cache = (_PyAttrCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-                next_instr--;
-                _Py_Specialize_LoadAttr(owner, next_instr, name);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(LOAD_ATTR, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 1);
-            if (oparg & 1) {
-                /* Designed to work in tandem with CALL, pushes two values. */
-                PyObject* meth = NULL;
-                if (_PyObject_GetMethod(owner, name, &meth)) {
-                    /* We can bypass temporary bound method object.
-                       meth is unbound method and obj is self.
-
-                       meth | self | arg1 | ... | argN
-                     */
-                    assert(meth != NULL);  // No errors on this branch
-                    res2 = meth;
-                    res = owner;  // Transfer ownership
-                }
-                else {
-                    /* meth is not an unbound method (but a regular attr, or
-                       something was returned by a descriptor protocol).  Set
-                       the second element of the stack to NULL, to signal
-                       CALL that it's not a method call.
-
-                       NULL | meth | arg1 | ... | argN
-                    */
-            #line 2334 "Python/generated_cases.c.h"
-                    Py_DECREF(owner);
-            #line 1680 "Python/bytecodes.c"
-                    if (meth == NULL) goto pop_1_error;
-                    res2 = NULL;
-                    res = meth;
-                }
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
             }
-            else {
-                /* Classic, pushes one value. */
-                res = PyObject_GetAttr(owner, name);
-            #line 2345 "Python/generated_cases.c.h"
-                Py_DECREF(owner);
-            #line 1689 "Python/bytecodes.c"
-                if (res == NULL) goto pop_1_error;
+            /* Skip 2 cache entries */
+            // _LOAD_ATTR_METHOD_NO_DICT
+            {
+                PyObject *descr = read_obj(&this_instr[6].cache);
+                assert(oparg & 1);
+                assert(Py_TYPE(owner)->tp_dictoffset == 0);
+                STAT_INC(LOAD_ATTR, hit);
+                assert(descr != NULL);
+                assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+                attr = Py_NewRef(descr);
+                self = owner;
             }
-            #line 2350 "Python/generated_cases.c.h"
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+            stack_pointer[-1] = attr;
+             if (1) stack_pointer[0] = self;
+            stack_pointer += (((1) ? 1 : 0));
             DISPATCH();
         }
 
-        TARGET(LOAD_ATTR_INSTANCE_VALUE) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t index = read_u16(&next_instr[3].cache);
-            #line 1694 "Python/bytecodes.c"
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
-            assert(tp->tp_dictoffset < 0);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
-            res = _PyDictOrValues_GetValues(dorv)->values[index];
-            DEOPT_IF(res == NULL, LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
-            #line 2377 "Python/generated_cases.c.h"
-            Py_DECREF(owner);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+        TARGET(LOAD_ATTR_METHOD_WITH_VALUES) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_METHOD_WITH_VALUES);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *self = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
+            }
+            // _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT
+            {
+                assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+                PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+                DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv), LOAD_ATTR);
+            }
+            // _GUARD_KEYS_VERSION
+            {
+                uint32_t keys_version = read_u32(&this_instr[4].cache);
+                PyTypeObject *owner_cls = Py_TYPE(owner);
+                PyHeapTypeObject *owner_heap_type = (PyHeapTypeObject *)owner_cls;
+                DEOPT_IF(owner_heap_type->ht_cached_keys->dk_version != keys_version, LOAD_ATTR);
+            }
+            // _LOAD_ATTR_METHOD_WITH_VALUES
+            {
+                PyObject *descr = read_obj(&this_instr[6].cache);
+                assert(oparg & 1);
+                /* Cached method object */
+                STAT_INC(LOAD_ATTR, hit);
+                assert(descr != NULL);
+                attr = Py_NewRef(descr);
+                assert(_PyType_HasFeature(Py_TYPE(attr), Py_TPFLAGS_METHOD_DESCRIPTOR));
+                self = owner;
+            }
+            stack_pointer[-1] = attr;
+             if (1) stack_pointer[0] = self;
+            stack_pointer += (((1) ? 1 : 0));
             DISPATCH();
         }
 
         TARGET(LOAD_ATTR_MODULE) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t index = read_u16(&next_instr[3].cache);
-            #line 1710 "Python/bytecodes.c"
-            DEOPT_IF(!PyModule_CheckExact(owner), LOAD_ATTR);
-            PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
-            assert(dict != NULL);
-            DEOPT_IF(dict->ma_keys->dk_version != type_version, LOAD_ATTR);
-            assert(dict->ma_keys->dk_kind == DICT_KEYS_UNICODE);
-            assert(index < dict->ma_keys->dk_nentries);
-            PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + index;
-            res = ep->me_value;
-            DEOPT_IF(res == NULL, LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
-            #line 2405 "Python/generated_cases.c.h"
-            Py_DECREF(owner);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
-            DISPATCH();
-        }
-
-        TARGET(LOAD_ATTR_WITH_HINT) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t index = read_u16(&next_instr[3].cache);
-            #line 1726 "Python/bytecodes.c"
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
-            PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
-            DEOPT_IF(dict == NULL, LOAD_ATTR);
-            assert(PyDict_CheckExact((PyObject *)dict));
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg>>1);
-            uint16_t hint = index;
-            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, LOAD_ATTR);
-            if (DK_IS_UNICODE(dict->ma_keys)) {
-                PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, LOAD_ATTR);
-                res = ep->me_value;
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_MODULE);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _CHECK_ATTR_MODULE
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                DEOPT_IF(!PyModule_CheckExact(owner), LOAD_ATTR);
+                PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
+                assert(dict != NULL);
+                DEOPT_IF(dict->ma_keys->dk_version != type_version, LOAD_ATTR);
             }
-            else {
-                PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, LOAD_ATTR);
-                res = ep->me_value;
+            // _LOAD_ATTR_MODULE
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                PyDictObject *dict = (PyDictObject *)((PyModuleObject *)owner)->md_dict;
+                assert(dict->ma_keys->dk_kind == DICT_KEYS_UNICODE);
+                assert(index < dict->ma_keys->dk_nentries);
+                PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + index;
+                attr = ep->me_value;
+                DEOPT_IF(attr == NULL, LOAD_ATTR);
+                STAT_INC(LOAD_ATTR, hit);
+                Py_INCREF(attr);
+                null = NULL;
+                Py_DECREF(owner);
             }
-            DEOPT_IF(res == NULL, LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
-            #line 2447 "Python/generated_cases.c.h"
-            Py_DECREF(owner);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+            /* Skip 5 cache entries */
+            stack_pointer[-1] = attr;
+             if (oparg & 1) stack_pointer[0] = null;
+            stack_pointer += ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(LOAD_ATTR_SLOT) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t index = read_u16(&next_instr[3].cache);
-            #line 1756 "Python/bytecodes.c"
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
-            char *addr = (char *)owner + index;
-            res = *(PyObject **)addr;
-            DEOPT_IF(res == NULL, LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            Py_INCREF(res);
-            res2 = NULL;
-            #line 2472 "Python/generated_cases.c.h"
-            Py_DECREF(owner);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+        TARGET(LOAD_ATTR_NONDESCRIPTOR_NO_DICT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_NONDESCRIPTOR_NO_DICT);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
+            }
+            /* Skip 2 cache entries */
+            // _LOAD_ATTR_NONDESCRIPTOR_NO_DICT
+            {
+                PyObject *descr = read_obj(&this_instr[6].cache);
+                assert((oparg & 1) == 0);
+                assert(Py_TYPE(owner)->tp_dictoffset == 0);
+                STAT_INC(LOAD_ATTR, hit);
+                assert(descr != NULL);
+                Py_DECREF(owner);
+                attr = Py_NewRef(descr);
+            }
+            stack_pointer[-1] = attr;
+            stack_pointer += (((0) ? 1 : 0));
             DISPATCH();
         }
 
-        TARGET(LOAD_ATTR_CLASS) {
-            PyObject *cls = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            PyObject *descr = read_obj(&next_instr[5].cache);
-            #line 1769 "Python/bytecodes.c"
-
-            DEOPT_IF(!PyType_Check(cls), LOAD_ATTR);
-            DEOPT_IF(((PyTypeObject *)cls)->tp_version_tag != type_version,
-                LOAD_ATTR);
-            assert(type_version != 0);
-
-            STAT_INC(LOAD_ATTR, hit);
-            res2 = NULL;
-            res = descr;
-            assert(res != NULL);
-            Py_INCREF(res);
-            #line 2499 "Python/generated_cases.c.h"
-            Py_DECREF(cls);
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+        TARGET(LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
+            }
+            // _GUARD_DORV_VALUES_INST_ATTR_FROM_DICT
+            {
+                assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+                PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+                DEOPT_IF(!_PyDictOrValues_IsValues(*dorv) && !_PyObject_MakeInstanceAttributesFromDict(owner, dorv), LOAD_ATTR);
+            }
+            // _GUARD_KEYS_VERSION
+            {
+                uint32_t keys_version = read_u32(&this_instr[4].cache);
+                PyTypeObject *owner_cls = Py_TYPE(owner);
+                PyHeapTypeObject *owner_heap_type = (PyHeapTypeObject *)owner_cls;
+                DEOPT_IF(owner_heap_type->ht_cached_keys->dk_version != keys_version, LOAD_ATTR);
+            }
+            // _LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES
+            {
+                PyObject *descr = read_obj(&this_instr[6].cache);
+                assert((oparg & 1) == 0);
+                STAT_INC(LOAD_ATTR, hit);
+                assert(descr != NULL);
+                Py_DECREF(owner);
+                attr = Py_NewRef(descr);
+            }
+            stack_pointer[-1] = attr;
+            stack_pointer += (((0) ? 1 : 0));
             DISPATCH();
         }
 
         TARGET(LOAD_ATTR_PROPERTY) {
-            PyObject *owner = stack_pointer[-1];
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint32_t func_version = read_u32(&next_instr[3].cache);
-            PyObject *fget = read_obj(&next_instr[5].cache);
-            #line 1784 "Python/bytecodes.c"
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_PROPERTY);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            owner = stack_pointer[-1];
+            uint32_t type_version = read_u32(&this_instr[2].cache);
+            uint32_t func_version = read_u32(&this_instr[4].cache);
+            PyObject *fget = read_obj(&this_instr[6].cache);
+            assert((oparg & 1) == 0);
             DEOPT_IF(tstate->interp->eval_frame, LOAD_ATTR);
-
             PyTypeObject *cls = Py_TYPE(owner);
-            DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
             assert(type_version != 0);
+            DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
             assert(Py_IS_TYPE(fget, &PyFunction_Type));
             PyFunctionObject *f = (PyFunctionObject *)fget;
             assert(func_version != 0);
@@ -2526,2167 +3758,2031 @@
             Py_INCREF(fget);
             _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, f, 1);
             // Manipulate stack directly because we exit with DISPATCH_INLINED().
-            SET_TOP(NULL);
-            int shrink_stack = !(oparg & 1);
-            STACK_SHRINK(shrink_stack);
-            new_frame->localsplus[0] = owner;
-            JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
-            frame->return_offset = 0;
-            DISPATCH_INLINED(new_frame);
-            #line 2537 "Python/generated_cases.c.h"
-        }
-
-        TARGET(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN) {
-            PyObject *owner = stack_pointer[-1];
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint32_t func_version = read_u32(&next_instr[3].cache);
-            PyObject *getattribute = read_obj(&next_instr[5].cache);
-            #line 1810 "Python/bytecodes.c"
-            DEOPT_IF(tstate->interp->eval_frame, LOAD_ATTR);
-            PyTypeObject *cls = Py_TYPE(owner);
-            DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
-            assert(type_version != 0);
-            assert(Py_IS_TYPE(getattribute, &PyFunction_Type));
-            PyFunctionObject *f = (PyFunctionObject *)getattribute;
-            assert(func_version != 0);
-            DEOPT_IF(f->func_version != func_version, LOAD_ATTR);
-            PyCodeObject *code = (PyCodeObject *)f->func_code;
-            assert(code->co_argcount == 2);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg >> 1);
-            Py_INCREF(f);
-            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, f, 2);
-            // Manipulate stack directly because we exit with DISPATCH_INLINED().
-            SET_TOP(NULL);
-            int shrink_stack = !(oparg & 1);
-            STACK_SHRINK(shrink_stack);
+            STACK_SHRINK(1);
             new_frame->localsplus[0] = owner;
-            new_frame->localsplus[1] = Py_NewRef(name);
-            JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
-            frame->return_offset = 0;
+            frame->return_offset = (uint16_t)(next_instr - this_instr);
             DISPATCH_INLINED(new_frame);
-            #line 2571 "Python/generated_cases.c.h"
         }
 
-        TARGET(STORE_ATTR_INSTANCE_VALUE) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *value = stack_pointer[-2];
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t index = read_u16(&next_instr[3].cache);
-            #line 1838 "Python/bytecodes.c"
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), STORE_ATTR);
-            STAT_INC(STORE_ATTR, hit);
-            PyDictValues *values = _PyDictOrValues_GetValues(dorv);
-            PyObject *old_value = values->values[index];
-            values->values[index] = value;
-            if (old_value == NULL) {
-                _PyDictValues_AddToInsertionOrder(values, index);
+        TARGET(LOAD_ATTR_SLOT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_SLOT);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
             }
-            else {
-                Py_DECREF(old_value);
+            // _LOAD_ATTR_SLOT
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                char *addr = (char *)owner + index;
+                attr = *(PyObject **)addr;
+                DEOPT_IF(attr == NULL, LOAD_ATTR);
+                STAT_INC(LOAD_ATTR, hit);
+                Py_INCREF(attr);
+                null = NULL;
+                Py_DECREF(owner);
             }
-            Py_DECREF(owner);
-            #line 2597 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            next_instr += 4;
+            /* Skip 5 cache entries */
+            stack_pointer[-1] = attr;
+             if (oparg & 1) stack_pointer[0] = null;
+            stack_pointer += ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(STORE_ATTR_WITH_HINT) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *value = stack_pointer[-2];
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t hint = read_u16(&next_instr[3].cache);
-            #line 1858 "Python/bytecodes.c"
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
-            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-            DEOPT_IF(_PyDictOrValues_IsValues(dorv), STORE_ATTR);
-            PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
-            DEOPT_IF(dict == NULL, STORE_ATTR);
-            assert(PyDict_CheckExact((PyObject *)dict));
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, STORE_ATTR);
-            PyObject *old_value;
-            uint64_t new_version;
-            if (DK_IS_UNICODE(dict->ma_keys)) {
-                PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, STORE_ATTR);
-                old_value = ep->me_value;
-                DEOPT_IF(old_value == NULL, STORE_ATTR);
-                new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
-                ep->me_value = value;
-            }
-            else {
-                PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
-                DEOPT_IF(ep->me_key != name, STORE_ATTR);
-                old_value = ep->me_value;
-                DEOPT_IF(old_value == NULL, STORE_ATTR);
-                new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
-                ep->me_value = value;
+        TARGET(LOAD_ATTR_WITH_HINT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 10;
+            INSTRUCTION_STATS(LOAD_ATTR_WITH_HINT);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_ATTR == 9, "incorrect cache size");
+            PyObject *owner;
+            PyObject *attr;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, LOAD_ATTR);
             }
-            Py_DECREF(old_value);
-            STAT_INC(STORE_ATTR, hit);
-            /* Ensure dict is GC tracked if it needs to be */
-            if (!_PyObject_GC_IS_TRACKED(dict) && _PyObject_GC_MAY_BE_TRACKED(value)) {
-                _PyObject_GC_TRACK(dict);
+            // _CHECK_ATTR_WITH_HINT
+            {
+                assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+                PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+                DEOPT_IF(_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
+                PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+                DEOPT_IF(dict == NULL, LOAD_ATTR);
+                assert(PyDict_CheckExact((PyObject *)dict));
+            }
+            // _LOAD_ATTR_WITH_HINT
+            {
+                uint16_t hint = read_u16(&this_instr[4].cache);
+                PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+                PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+                DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, LOAD_ATTR);
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+                if (DK_IS_UNICODE(dict->ma_keys)) {
+                    PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
+                    DEOPT_IF(ep->me_key != name, LOAD_ATTR);
+                    attr = ep->me_value;
+                }
+                else {
+                    PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
+                    DEOPT_IF(ep->me_key != name, LOAD_ATTR);
+                    attr = ep->me_value;
+                }
+                DEOPT_IF(attr == NULL, LOAD_ATTR);
+                STAT_INC(LOAD_ATTR, hit);
+                Py_INCREF(attr);
+                null = NULL;
+                Py_DECREF(owner);
             }
-            /* PEP 509 */
-            dict->ma_version_tag = new_version;
-            Py_DECREF(owner);
-            #line 2647 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            next_instr += 4;
-            DISPATCH();
-        }
-
-        TARGET(STORE_ATTR_SLOT) {
-            PyObject *owner = stack_pointer[-1];
-            PyObject *value = stack_pointer[-2];
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint16_t index = read_u16(&next_instr[3].cache);
-            #line 1899 "Python/bytecodes.c"
-            PyTypeObject *tp = Py_TYPE(owner);
-            assert(type_version != 0);
-            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
-            char *addr = (char *)owner + index;
-            STAT_INC(STORE_ATTR, hit);
-            PyObject *old_value = *(PyObject **)addr;
-            *(PyObject **)addr = value;
-            Py_XDECREF(old_value);
-            Py_DECREF(owner);
-            #line 2668 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            next_instr += 4;
-            DISPATCH();
-        }
-
-        TARGET(COMPARE_OP) {
-            PREDICTED(COMPARE_OP);
-            static_assert(INLINE_CACHE_ENTRIES_COMPARE_OP == 1, "incorrect cache size");
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *res;
-            #line 1918 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PyCompareOpCache *cache = (_PyCompareOpCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_CompareOp(left, right, next_instr, oparg);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(COMPARE_OP, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            assert((oparg >> 4) <= Py_GE);
-            res = PyObject_RichCompare(left, right, oparg>>4);
-            #line 2693 "Python/generated_cases.c.h"
-            Py_DECREF(left);
-            Py_DECREF(right);
-            #line 1931 "Python/bytecodes.c"
-            if (res == NULL) goto pop_2_error;
-            #line 2698 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 1;
+            /* Skip 5 cache entries */
+            stack_pointer[-1] = attr;
+             if (oparg & 1) stack_pointer[0] = null;
+            stack_pointer += ((oparg & 1));
             DISPATCH();
         }
-
-        TARGET(COMPARE_OP_FLOAT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *res;
-            #line 1935 "Python/bytecodes.c"
-            DEOPT_IF(!PyFloat_CheckExact(left), COMPARE_OP);
-            DEOPT_IF(!PyFloat_CheckExact(right), COMPARE_OP);
-            STAT_INC(COMPARE_OP, hit);
-            double dleft = PyFloat_AS_DOUBLE(left);
-            double dright = PyFloat_AS_DOUBLE(right);
-            // 1 if NaN, 2 if <, 4 if >, 8 if ==; this matches low four bits of the oparg
-            int sign_ish = COMPARISON_BIT(dleft, dright);
-            _Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
-            _Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
-            res = (sign_ish & oparg) ? Py_True : Py_False;
-            Py_INCREF(res);
-            #line 2721 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
+
+        TARGET(LOAD_BUILD_CLASS) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(LOAD_BUILD_CLASS);
+            PyObject *bc;
+            if (PyMapping_GetOptionalItem(BUILTINS(), &_Py_ID(__build_class__), &bc) < 0) goto error;
+            if (bc == NULL) {
+                _PyErr_SetString(tstate, PyExc_NameError,
+                                 "__build_class__ not found");
+                if (true) goto error;
+            }
+            stack_pointer[0] = bc;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(COMPARE_OP_INT) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *res;
-            #line 1950 "Python/bytecodes.c"
-            DEOPT_IF(!PyLong_CheckExact(left), COMPARE_OP);
-            DEOPT_IF(!PyLong_CheckExact(right), COMPARE_OP);
-            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)left), COMPARE_OP);
-            DEOPT_IF(!_PyLong_IsCompact((PyLongObject *)right), COMPARE_OP);
-            STAT_INC(COMPARE_OP, hit);
-            assert(_PyLong_DigitCount((PyLongObject *)left) <= 1 &&
-                   _PyLong_DigitCount((PyLongObject *)right) <= 1);
-            Py_ssize_t ileft = _PyLong_CompactValue((PyLongObject *)left);
-            Py_ssize_t iright = _PyLong_CompactValue((PyLongObject *)right);
-            // 2 if <, 4 if >, 8 if ==; this matches the low 4 bits of the oparg
-            int sign_ish = COMPARISON_BIT(ileft, iright);
-            _Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
-            _Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
-            res = (sign_ish & oparg) ? Py_True : Py_False;
-            Py_INCREF(res);
-            #line 2748 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
+        TARGET(LOAD_CONST) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(LOAD_CONST);
+            PyObject *value;
+            value = GETITEM(FRAME_CO_CONSTS, oparg);
+            Py_INCREF(value);
+            stack_pointer[0] = value;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(COMPARE_OP_STR) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *res;
-            #line 1969 "Python/bytecodes.c"
-            DEOPT_IF(!PyUnicode_CheckExact(left), COMPARE_OP);
-            DEOPT_IF(!PyUnicode_CheckExact(right), COMPARE_OP);
-            STAT_INC(COMPARE_OP, hit);
-            int eq = _PyUnicode_Equal(left, right);
-            assert((oparg >>4) == Py_EQ || (oparg >>4) == Py_NE);
-            _Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
-            _Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
-            assert(eq == 0 || eq == 1);
-            assert((oparg & 0xf) == COMPARISON_NOT_EQUALS || (oparg & 0xf) == COMPARISON_EQUALS);
-            assert(COMPARISON_NOT_EQUALS + 1 == COMPARISON_EQUALS);
-            res = ((COMPARISON_NOT_EQUALS + eq) & oparg) ? Py_True : Py_False;
-            Py_INCREF(res);
-            #line 2772 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
+        TARGET(LOAD_DEREF) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(LOAD_DEREF);
+            PyObject *value;
+            PyObject *cell = GETLOCAL(oparg);
+            value = PyCell_GET(cell);
+            if (value == NULL) {
+                _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                if (true) goto error;
+            }
+            Py_INCREF(value);
+            stack_pointer[0] = value;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(IS_OP) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *b;
-            #line 1984 "Python/bytecodes.c"
-            int res = Py_Is(left, right) ^ oparg;
-            #line 2785 "Python/generated_cases.c.h"
-            Py_DECREF(left);
-            Py_DECREF(right);
-            #line 1986 "Python/bytecodes.c"
-            b = Py_NewRef(res ? Py_True : Py_False);
-            #line 2790 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = b;
+        TARGET(LOAD_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_FAST);
+            PyObject *value;
+            value = GETLOCAL(oparg);
+            assert(value != NULL);
+            Py_INCREF(value);
+            stack_pointer[0] = value;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(CONTAINS_OP) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *b;
-            #line 1990 "Python/bytecodes.c"
-            int res = PySequence_Contains(right, left);
-            #line 2802 "Python/generated_cases.c.h"
-            Py_DECREF(left);
-            Py_DECREF(right);
-            #line 1992 "Python/bytecodes.c"
-            if (res < 0) goto pop_2_error;
-            b = Py_NewRef((res^oparg) ? Py_True : Py_False);
-            #line 2808 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = b;
+        TARGET(LOAD_FAST_AND_CLEAR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_FAST_AND_CLEAR);
+            PyObject *value;
+            value = GETLOCAL(oparg);
+            // do not use SETLOCAL here, it decrefs the old value
+            GETLOCAL(oparg) = NULL;
+            stack_pointer[0] = value;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(CHECK_EG_MATCH) {
-            PyObject *match_type = stack_pointer[-1];
-            PyObject *exc_value = stack_pointer[-2];
-            PyObject *rest;
-            PyObject *match;
-            #line 1997 "Python/bytecodes.c"
-            if (check_except_star_type_valid(tstate, match_type) < 0) {
-            #line 2821 "Python/generated_cases.c.h"
-                Py_DECREF(exc_value);
-                Py_DECREF(match_type);
-            #line 1999 "Python/bytecodes.c"
-                if (true) goto pop_2_error;
-            }
-
-            match = NULL;
-            rest = NULL;
-            int res = exception_group_match(exc_value, match_type,
-                                            &match, &rest);
-            #line 2832 "Python/generated_cases.c.h"
-            Py_DECREF(exc_value);
-            Py_DECREF(match_type);
-            #line 2007 "Python/bytecodes.c"
-            if (res < 0) goto pop_2_error;
-
-            assert((match == NULL) == (rest == NULL));
-            if (match == NULL) goto pop_2_error;
+        TARGET(LOAD_FAST_CHECK) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_FAST_CHECK);
+            PyObject *value;
+            value = GETLOCAL(oparg);
+            if (value == NULL) goto unbound_local_error;
+            Py_INCREF(value);
+            stack_pointer[0] = value;
+            stack_pointer += 1;
+            DISPATCH();
+        }
 
-            if (!Py_IsNone(match)) {
-                PyErr_SetHandledException(match);
+        TARGET(LOAD_FAST_LOAD_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_FAST_LOAD_FAST);
+            PyObject *value1;
+            PyObject *value2;
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            value1 = GETLOCAL(oparg1);
+            value2 = GETLOCAL(oparg2);
+            Py_INCREF(value1);
+            Py_INCREF(value2);
+            stack_pointer[0] = value1;
+            stack_pointer[1] = value2;
+            stack_pointer += 2;
+            DISPATCH();
+        }
+
+        TARGET(LOAD_FROM_DICT_OR_DEREF) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_FROM_DICT_OR_DEREF);
+            PyObject *class_dict;
+            PyObject *value;
+            class_dict = stack_pointer[-1];
+            PyObject *name;
+            assert(class_dict);
+            assert(oparg >= 0 && oparg < _PyFrame_GetCode(frame)->co_nlocalsplus);
+            name = PyTuple_GET_ITEM(_PyFrame_GetCode(frame)->co_localsplusnames, oparg);
+            if (PyMapping_GetOptionalItem(class_dict, name, &value) < 0) {
+                GOTO_ERROR(error);
             }
-            #line 2844 "Python/generated_cases.c.h"
-            stack_pointer[-1] = match;
-            stack_pointer[-2] = rest;
+            if (!value) {
+                PyObject *cell = GETLOCAL(oparg);
+                value = PyCell_GET(cell);
+                if (value == NULL) {
+                    _PyEval_FormatExcUnbound(tstate, _PyFrame_GetCode(frame), oparg);
+                    GOTO_ERROR(error);
+                }
+                Py_INCREF(value);
+            }
+            Py_DECREF(class_dict);
+            stack_pointer[-1] = value;
             DISPATCH();
         }
 
-        TARGET(CHECK_EXC_MATCH) {
-            PyObject *right = stack_pointer[-1];
-            PyObject *left = stack_pointer[-2];
-            PyObject *b;
-            #line 2018 "Python/bytecodes.c"
-            assert(PyExceptionInstance_Check(left));
-            if (check_except_type_valid(tstate, right) < 0) {
-            #line 2857 "Python/generated_cases.c.h"
-                 Py_DECREF(right);
-            #line 2021 "Python/bytecodes.c"
-                 if (true) goto pop_1_error;
+        TARGET(LOAD_FROM_DICT_OR_GLOBALS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_FROM_DICT_OR_GLOBALS);
+            PyObject *mod_or_class_dict;
+            PyObject *v;
+            mod_or_class_dict = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
+                GOTO_ERROR(error);
             }
-
-            int res = PyErr_GivenExceptionMatches(left, right);
-            #line 2864 "Python/generated_cases.c.h"
-            Py_DECREF(right);
-            #line 2026 "Python/bytecodes.c"
-            b = Py_NewRef(res ? Py_True : Py_False);
-            #line 2868 "Python/generated_cases.c.h"
-            stack_pointer[-1] = b;
+            if (v == NULL) {
+                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
+                    GOTO_ERROR(error);
+                }
+                if (v == NULL) {
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                        GOTO_ERROR(error);
+                    }
+                    if (v == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                            tstate, PyExc_NameError,
+                            NAME_ERROR_MSG, name);
+                        GOTO_ERROR(error);
+                    }
+                }
+            }
+            Py_DECREF(mod_or_class_dict);
+            stack_pointer[-1] = v;
             DISPATCH();
         }
 
-        TARGET(IMPORT_NAME) {
-            PyObject *fromlist = stack_pointer[-1];
-            PyObject *level = stack_pointer[-2];
+        TARGET(LOAD_GLOBAL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(LOAD_GLOBAL);
+            PREDICTED(LOAD_GLOBAL);
+            _Py_CODEUNIT *this_instr = next_instr - 5;
             PyObject *res;
-            #line 2030 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            res = import_name(tstate, frame, name, fromlist, level);
-            #line 2880 "Python/generated_cases.c.h"
-            Py_DECREF(level);
-            Py_DECREF(fromlist);
-            #line 2033 "Python/bytecodes.c"
-            if (res == NULL) goto pop_2_error;
-            #line 2885 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
+            PyObject *null = NULL;
+            // _SPECIALIZE_LOAD_GLOBAL
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+                    next_instr = this_instr;
+                    _Py_Specialize_LoadGlobal(GLOBALS(), BUILTINS(), next_instr, name);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(LOAD_GLOBAL, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
+            }
+            // _LOAD_GLOBAL
+            {
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
+                if (PyDict_CheckExact(GLOBALS())
+                    && PyDict_CheckExact(BUILTINS()))
+                {
+                    res = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
+                        (PyDictObject *)BUILTINS(),
+                        name);
+                    if (res == NULL) {
+                        if (!_PyErr_Occurred(tstate)) {
+                            /* _PyDict_LoadGlobal() returns NULL without raising
+                             * an exception if the key doesn't exist */
+                            _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                NAME_ERROR_MSG, name);
+                        }
+                        if (true) goto error;
+                    }
+                    Py_INCREF(res);
+                }
+                else {
+                    /* Slow-path if globals or builtins is not a dict */
+                    /* namespace 1: globals */
+                    if (PyMapping_GetOptionalItem(GLOBALS(), name, &res) < 0) goto error;
+                    if (res == NULL) {
+                        /* namespace 2: builtins */
+                        if (PyMapping_GetOptionalItem(BUILTINS(), name, &res) < 0) goto error;
+                        if (res == NULL) {
+                            _PyEval_FormatExcCheckArg(
+                                tstate, PyExc_NameError,
+                                NAME_ERROR_MSG, name);
+                            if (true) goto error;
+                        }
+                    }
+                }
+                null = NULL;
+            }
+            stack_pointer[0] = res;
+             if (oparg & 1) stack_pointer[1] = null;
+            stack_pointer += 1 + ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(IMPORT_FROM) {
-            PyObject *from = stack_pointer[-1];
+        TARGET(LOAD_GLOBAL_BUILTIN) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(LOAD_GLOBAL_BUILTIN);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_GLOBAL == 4, "incorrect cache size");
             PyObject *res;
-            #line 2037 "Python/bytecodes.c"
-            PyObject *name = GETITEM(frame->f_code->co_names, oparg);
-            res = import_from(tstate, from, name);
-            if (res == NULL) goto error;
-            #line 2898 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_GLOBALS_VERSION
+            {
+                uint16_t version = read_u16(&this_instr[2].cache);
+                PyDictObject *dict = (PyDictObject *)GLOBALS();
+                DEOPT_IF(!PyDict_CheckExact(dict), LOAD_GLOBAL);
+                DEOPT_IF(dict->ma_keys->dk_version != version, LOAD_GLOBAL);
+                assert(DK_IS_UNICODE(dict->ma_keys));
+            }
+            // _GUARD_BUILTINS_VERSION
+            {
+                uint16_t version = read_u16(&this_instr[3].cache);
+                PyDictObject *dict = (PyDictObject *)BUILTINS();
+                DEOPT_IF(!PyDict_CheckExact(dict), LOAD_GLOBAL);
+                DEOPT_IF(dict->ma_keys->dk_version != version, LOAD_GLOBAL);
+                assert(DK_IS_UNICODE(dict->ma_keys));
+            }
+            // _LOAD_GLOBAL_BUILTINS
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                PyDictObject *bdict = (PyDictObject *)BUILTINS();
+                PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(bdict->ma_keys);
+                res = entries[index].me_value;
+                DEOPT_IF(res == NULL, LOAD_GLOBAL);
+                Py_INCREF(res);
+                STAT_INC(LOAD_GLOBAL, hit);
+                null = NULL;
+            }
+            stack_pointer[0] = res;
+             if (oparg & 1) stack_pointer[1] = null;
+            stack_pointer += 1 + ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(JUMP_FORWARD) {
-            #line 2043 "Python/bytecodes.c"
-            JUMPBY(oparg);
-            #line 2907 "Python/generated_cases.c.h"
+        TARGET(LOAD_GLOBAL_MODULE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(LOAD_GLOBAL_MODULE);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_GLOBAL == 4, "incorrect cache size");
+            PyObject *res;
+            PyObject *null = NULL;
+            /* Skip 1 cache entry */
+            // _GUARD_GLOBALS_VERSION
+            {
+                uint16_t version = read_u16(&this_instr[2].cache);
+                PyDictObject *dict = (PyDictObject *)GLOBALS();
+                DEOPT_IF(!PyDict_CheckExact(dict), LOAD_GLOBAL);
+                DEOPT_IF(dict->ma_keys->dk_version != version, LOAD_GLOBAL);
+                assert(DK_IS_UNICODE(dict->ma_keys));
+            }
+            /* Skip 1 cache entry */
+            // _LOAD_GLOBAL_MODULE
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                PyDictObject *dict = (PyDictObject *)GLOBALS();
+                PyDictUnicodeEntry *entries = DK_UNICODE_ENTRIES(dict->ma_keys);
+                res = entries[index].me_value;
+                DEOPT_IF(res == NULL, LOAD_GLOBAL);
+                Py_INCREF(res);
+                STAT_INC(LOAD_GLOBAL, hit);
+                null = NULL;
+            }
+            stack_pointer[0] = res;
+             if (oparg & 1) stack_pointer[1] = null;
+            stack_pointer += 1 + ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(JUMP_BACKWARD) {
-            PREDICTED(JUMP_BACKWARD);
-            #line 2047 "Python/bytecodes.c"
-            assert(oparg < INSTR_OFFSET());
-            JUMPBY(-oparg);
-            #line 2916 "Python/generated_cases.c.h"
-            CHECK_EVAL_BREAKER();
+        TARGET(LOAD_LOCALS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_LOCALS);
+            PyObject *locals;
+            locals = LOCALS();
+            if (locals == NULL) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "no locals found");
+                if (true) goto error;
+            }
+            Py_INCREF(locals);
+            stack_pointer[0] = locals;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(POP_JUMP_IF_FALSE) {
-            PREDICTED(POP_JUMP_IF_FALSE);
-            PyObject *cond = stack_pointer[-1];
-            #line 2053 "Python/bytecodes.c"
-            if (Py_IsTrue(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
+        TARGET(LOAD_NAME) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(LOAD_NAME);
+            PyObject *v;
+            PyObject *mod_or_class_dict = LOCALS();
+            if (mod_or_class_dict == NULL) {
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "no locals found");
+                if (true) goto error;
             }
-            else if (Py_IsFalse(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-                JUMPBY(oparg);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
+                GOTO_ERROR(error);
             }
-            else {
-                int err = PyObject_IsTrue(cond);
-            #line 2934 "Python/generated_cases.c.h"
-                Py_DECREF(cond);
-            #line 2063 "Python/bytecodes.c"
-                if (err == 0) {
-                    JUMPBY(oparg);
+            if (v == NULL) {
+                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
+                    GOTO_ERROR(error);
                 }
-                else {
-                    if (err < 0) goto pop_1_error;
+                if (v == NULL) {
+                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                        GOTO_ERROR(error);
+                    }
+                    if (v == NULL) {
+                        _PyEval_FormatExcCheckArg(
+                            tstate, PyExc_NameError,
+                            NAME_ERROR_MSG, name);
+                        GOTO_ERROR(error);
+                    }
                 }
             }
-            #line 2944 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+            stack_pointer[0] = v;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(POP_JUMP_IF_TRUE) {
-            PyObject *cond = stack_pointer[-1];
-            #line 2073 "Python/bytecodes.c"
-            if (Py_IsFalse(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-            }
-            else if (Py_IsTrue(cond)) {
-                _Py_DECREF_NO_DEALLOC(cond);
-                JUMPBY(oparg);
+        TARGET(LOAD_SUPER_ATTR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(LOAD_SUPER_ATTR);
+            PREDICTED(LOAD_SUPER_ATTR);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *class;
+            PyObject *global_super;
+            PyObject *self;
+            PyObject *attr;
+            PyObject *null = NULL;
+            // _SPECIALIZE_LOAD_SUPER_ATTR
+            class = stack_pointer[-2];
+            global_super = stack_pointer[-3];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                int load_method = oparg & 1;
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_LoadSuperAttr(global_super, class, next_instr, load_method);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(LOAD_SUPER_ATTR, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            else {
-                int err = PyObject_IsTrue(cond);
-            #line 2961 "Python/generated_cases.c.h"
-                Py_DECREF(cond);
-            #line 2083 "Python/bytecodes.c"
-                if (err > 0) {
-                    JUMPBY(oparg);
+            // _LOAD_SUPER_ATTR
+            self = stack_pointer[-1];
+            {
+                TIER_ONE_ONLY
+                if (opcode == INSTRUMENTED_LOAD_SUPER_ATTR) {
+                    PyObject *arg = oparg & 2 ? class : &_PyInstrumentation_MISSING;
+                    int err = _Py_call_instrumentation_2args(
+                        tstate, PY_MONITORING_EVENT_CALL,
+                        frame, this_instr, global_super, arg);
+                    if (err) goto pop_3_error;
                 }
-                else {
-                    if (err < 0) goto pop_1_error;
+                // we make no attempt to optimize here; specializations should
+                // handle any case whose performance we care about
+                PyObject *stack[] = {class, self};
+                PyObject *super = PyObject_Vectorcall(global_super, stack, oparg & 2, NULL);
+                if (opcode == INSTRUMENTED_LOAD_SUPER_ATTR) {
+                    PyObject *arg = oparg & 2 ? class : &_PyInstrumentation_MISSING;
+                    if (super == NULL) {
+                        _Py_call_instrumentation_exc2(
+                            tstate, PY_MONITORING_EVENT_C_RAISE,
+                            frame, this_instr, global_super, arg);
+                    }
+                    else {
+                        int err = _Py_call_instrumentation_2args(
+                            tstate, PY_MONITORING_EVENT_C_RETURN,
+                            frame, this_instr, global_super, arg);
+                        if (err < 0) {
+                            Py_CLEAR(super);
+                        }
+                    }
                 }
+                Py_DECREF(global_super);
+                Py_DECREF(class);
+                Py_DECREF(self);
+                if (super == NULL) goto pop_3_error;
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+                attr = PyObject_GetAttr(super, name);
+                Py_DECREF(super);
+                if (attr == NULL) goto pop_3_error;
+                null = NULL;
             }
-            #line 2971 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+            stack_pointer[-3] = attr;
+             if (oparg & 1) stack_pointer[-2] = null;
+            stack_pointer += -2 + ((oparg & 1));
             DISPATCH();
         }
 
-        TARGET(POP_JUMP_IF_NOT_NONE) {
-            PyObject *value = stack_pointer[-1];
-            #line 2093 "Python/bytecodes.c"
-            if (!Py_IsNone(value)) {
-            #line 2980 "Python/generated_cases.c.h"
-                Py_DECREF(value);
-            #line 2095 "Python/bytecodes.c"
-                JUMPBY(oparg);
+        TARGET(LOAD_SUPER_ATTR_ATTR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(LOAD_SUPER_ATTR_ATTR);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_SUPER_ATTR == 1, "incorrect cache size");
+            PyObject *self;
+            PyObject *class;
+            PyObject *global_super;
+            PyObject *attr;
+            self = stack_pointer[-1];
+            class = stack_pointer[-2];
+            global_super = stack_pointer[-3];
+            assert(!(oparg & 1));
+            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
+            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
+            STAT_INC(LOAD_SUPER_ATTR, hit);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            attr = _PySuper_Lookup((PyTypeObject *)class, self, name, NULL);
+            Py_DECREF(global_super);
+            Py_DECREF(class);
+            Py_DECREF(self);
+            if (attr == NULL) goto pop_3_error;
+            stack_pointer[-3] = attr;
+            stack_pointer += -2 + (((0) ? 1 : 0));
+            DISPATCH();
+        }
+
+        TARGET(LOAD_SUPER_ATTR_METHOD) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(LOAD_SUPER_ATTR_METHOD);
+            static_assert(INLINE_CACHE_ENTRIES_LOAD_SUPER_ATTR == 1, "incorrect cache size");
+            PyObject *self;
+            PyObject *class;
+            PyObject *global_super;
+            PyObject *attr;
+            PyObject *self_or_null;
+            self = stack_pointer[-1];
+            class = stack_pointer[-2];
+            global_super = stack_pointer[-3];
+            assert(oparg & 1);
+            DEOPT_IF(global_super != (PyObject *)&PySuper_Type, LOAD_SUPER_ATTR);
+            DEOPT_IF(!PyType_Check(class), LOAD_SUPER_ATTR);
+            STAT_INC(LOAD_SUPER_ATTR, hit);
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 2);
+            PyTypeObject *cls = (PyTypeObject *)class;
+            int method_found = 0;
+            attr = _PySuper_Lookup(cls, self, name,
+                                   Py_TYPE(self)->tp_getattro == PyObject_GenericGetAttr ? &method_found : NULL);
+            Py_DECREF(global_super);
+            Py_DECREF(class);
+            if (attr == NULL) {
+                Py_DECREF(self);
+                if (true) goto pop_3_error;
             }
-            else {
-                _Py_DECREF_NO_DEALLOC(value);
+            if (method_found) {
+                self_or_null = self; // transfer ownership
+            } else {
+                Py_DECREF(self);
+                self_or_null = NULL;
+            }
+            stack_pointer[-3] = attr;
+            stack_pointer[-2] = self_or_null;
+            stack_pointer += -1;
+            DISPATCH();
+        }
+
+        TARGET(MAKE_CELL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(MAKE_CELL);
+            // "initial" is probably NULL but not if it's an arg (or set
+            // via PyFrame_LocalsToFast() before MAKE_CELL has run).
+            PyObject *initial = GETLOCAL(oparg);
+            PyObject *cell = PyCell_New(initial);
+            if (cell == NULL) {
+                GOTO_ERROR(error);
             }
-            #line 2988 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+            SETLOCAL(oparg, cell);
             DISPATCH();
         }
 
-        TARGET(POP_JUMP_IF_NONE) {
-            PyObject *value = stack_pointer[-1];
-            #line 2103 "Python/bytecodes.c"
-            if (Py_IsNone(value)) {
-                _Py_DECREF_NO_DEALLOC(value);
-                JUMPBY(oparg);
-            }
-            else {
-            #line 3001 "Python/generated_cases.c.h"
-                Py_DECREF(value);
-            #line 2109 "Python/bytecodes.c"
+        TARGET(MAKE_FUNCTION) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(MAKE_FUNCTION);
+            PyObject *codeobj;
+            PyObject *func;
+            codeobj = stack_pointer[-1];
+            PyFunctionObject *func_obj = (PyFunctionObject *)
+            PyFunction_New(codeobj, GLOBALS());
+            Py_DECREF(codeobj);
+            if (func_obj == NULL) {
+                GOTO_ERROR(error);
             }
-            #line 3005 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-
-        TARGET(JUMP_BACKWARD_NO_INTERRUPT) {
-            #line 2113 "Python/bytecodes.c"
-            /* This bytecode is used in the `yield from` or `await` loop.
-             * If there is an interrupt, we want it handled in the innermost
-             * generator or coroutine, so we deliberately do not check it here.
-             * (see bpo-30039).
-             */
-            JUMPBY(-oparg);
-            #line 3018 "Python/generated_cases.c.h"
+            _PyFunction_SetVersion(
+                                   func_obj, ((PyCodeObject *)codeobj)->co_version);
+            func = (PyObject *)func_obj;
+            stack_pointer[-1] = func;
             DISPATCH();
         }
 
-        TARGET(GET_LEN) {
-            PyObject *obj = stack_pointer[-1];
-            PyObject *len_o;
-            #line 2122 "Python/bytecodes.c"
-            // PUSH(len(TOS))
-            Py_ssize_t len_i = PyObject_Length(obj);
-            if (len_i < 0) goto error;
-            len_o = PyLong_FromSsize_t(len_i);
-            if (len_o == NULL) goto error;
-            #line 3031 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = len_o;
+        TARGET(MAP_ADD) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(MAP_ADD);
+            PyObject *value;
+            PyObject *key;
+            PyObject *dict;
+            value = stack_pointer[-1];
+            key = stack_pointer[-2];
+            dict = stack_pointer[-3 - (oparg - 1)];
+            assert(PyDict_CheckExact(dict));
+            /* dict[key] = value */
+            // Do not DECREF INPUTS because the function steals the references
+            if (_PyDict_SetItem_Take2((PyDictObject *)dict, key, value) != 0) goto pop_2_error;
+            stack_pointer += -2;
             DISPATCH();
         }
 
         TARGET(MATCH_CLASS) {
-            PyObject *names = stack_pointer[-1];
-            PyObject *type = stack_pointer[-2];
-            PyObject *subject = stack_pointer[-3];
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(MATCH_CLASS);
+            PyObject *names;
+            PyObject *type;
+            PyObject *subject;
             PyObject *attrs;
-            #line 2130 "Python/bytecodes.c"
+            names = stack_pointer[-1];
+            type = stack_pointer[-2];
+            subject = stack_pointer[-3];
             // Pop TOS and TOS1. Set TOS to a tuple of attributes on success, or
             // None on failure.
             assert(PyTuple_CheckExact(names));
-            attrs = match_class(tstate, subject, type, oparg, names);
-            #line 3047 "Python/generated_cases.c.h"
+            attrs = _PyEval_MatchClass(tstate, subject, type, oparg, names);
             Py_DECREF(subject);
             Py_DECREF(type);
             Py_DECREF(names);
-            #line 2135 "Python/bytecodes.c"
             if (attrs) {
                 assert(PyTuple_CheckExact(attrs));  // Success!
             }
             else {
                 if (_PyErr_Occurred(tstate)) goto pop_3_error;
-                attrs = Py_NewRef(Py_None);  // Failure!
+                // Error!
+                attrs = Py_None;  // Failure!
             }
-            #line 3059 "Python/generated_cases.c.h"
-            STACK_SHRINK(2);
-            stack_pointer[-1] = attrs;
-            DISPATCH();
-        }
-
-        TARGET(MATCH_MAPPING) {
-            PyObject *subject = stack_pointer[-1];
-            PyObject *res;
-            #line 2145 "Python/bytecodes.c"
-            int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_MAPPING;
-            res = Py_NewRef(match ? Py_True : Py_False);
-            #line 3071 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
-            PREDICT(POP_JUMP_IF_FALSE);
-            DISPATCH();
-        }
-
-        TARGET(MATCH_SEQUENCE) {
-            PyObject *subject = stack_pointer[-1];
-            PyObject *res;
-            #line 2151 "Python/bytecodes.c"
-            int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_SEQUENCE;
-            res = Py_NewRef(match ? Py_True : Py_False);
-            #line 3084 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
-            PREDICT(POP_JUMP_IF_FALSE);
+            stack_pointer[-3] = attrs;
+            stack_pointer += -2;
             DISPATCH();
         }
 
         TARGET(MATCH_KEYS) {
-            PyObject *keys = stack_pointer[-1];
-            PyObject *subject = stack_pointer[-2];
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(MATCH_KEYS);
+            PyObject *keys;
+            PyObject *subject;
             PyObject *values_or_none;
-            #line 2157 "Python/bytecodes.c"
+            keys = stack_pointer[-1];
+            subject = stack_pointer[-2];
             // On successful match, PUSH(values). Otherwise, PUSH(None).
-            values_or_none = match_keys(tstate, subject, keys);
+            values_or_none = _PyEval_MatchKeys(tstate, subject, keys);
             if (values_or_none == NULL) goto error;
-            #line 3099 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = values_or_none;
-            DISPATCH();
-        }
-
-        TARGET(GET_ITER) {
-            PyObject *iterable = stack_pointer[-1];
-            PyObject *iter;
-            #line 2163 "Python/bytecodes.c"
-            /* before: [obj]; after [getiter(obj)] */
-            iter = PyObject_GetIter(iterable);
-            #line 3111 "Python/generated_cases.c.h"
-            Py_DECREF(iterable);
-            #line 2166 "Python/bytecodes.c"
-            if (iter == NULL) goto pop_1_error;
-            #line 3115 "Python/generated_cases.c.h"
-            stack_pointer[-1] = iter;
-            DISPATCH();
-        }
-
-        TARGET(GET_YIELD_FROM_ITER) {
-            PyObject *iterable = stack_pointer[-1];
-            PyObject *iter;
-            #line 2170 "Python/bytecodes.c"
-            /* before: [obj]; after [getiter(obj)] */
-            if (PyCoro_CheckExact(iterable)) {
-                /* `iterable` is a coroutine */
-                if (!(frame->f_code->co_flags & (CO_COROUTINE | CO_ITERABLE_COROUTINE))) {
-                    /* and it is used in a 'yield from' expression of a
-                       regular generator. */
-                    _PyErr_SetString(tstate, PyExc_TypeError,
-                                     "cannot 'yield from' a coroutine object "
-                                     "in a non-coroutine generator");
-                    goto error;
-                }
-                iter = iterable;
-            }
-            else if (PyGen_CheckExact(iterable)) {
-                iter = iterable;
-            }
-            else {
-                /* `iterable` is not a generator. */
-                iter = PyObject_GetIter(iterable);
-                if (iter == NULL) {
-                    goto error;
-                }
-            #line 3146 "Python/generated_cases.c.h"
-                Py_DECREF(iterable);
-            #line 2193 "Python/bytecodes.c"
-            }
-            #line 3150 "Python/generated_cases.c.h"
-            stack_pointer[-1] = iter;
-            PREDICT(LOAD_CONST);
+            stack_pointer[0] = values_or_none;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(FOR_ITER) {
-            PREDICTED(FOR_ITER);
-            static_assert(INLINE_CACHE_ENTRIES_FOR_ITER == 1, "incorrect cache size");
-            PyObject *iter = stack_pointer[-1];
-            PyObject *next;
-            #line 2212 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PyForIterCache *cache = (_PyForIterCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_ForIter(iter, next_instr, oparg);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(FOR_ITER, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            /* before: [iter]; after: [iter, iter()] *or* [] (and jump over END_FOR.) */
-            next = (*Py_TYPE(iter)->tp_iternext)(iter);
-            if (next == NULL) {
-                if (_PyErr_Occurred(tstate)) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
-                        goto error;
-                    }
-                    monitor_raise(tstate, frame, next_instr-1);
-                    _PyErr_Clear(tstate);
-                }
-                /* iterator ended normally */
-                assert(next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == END_FOR ||
-                       next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == INSTRUMENTED_END_FOR);
-                Py_DECREF(iter);
-                STACK_SHRINK(1);
-                /* Jump forward oparg, then skip following END_FOR instruction */
-                JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
-                DISPATCH();
-            }
-            // Common case: no jump, leave it to the code generator
-            #line 3192 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = next;
+        TARGET(MATCH_MAPPING) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(MATCH_MAPPING);
+            PyObject *subject;
+            PyObject *res;
+            subject = stack_pointer[-1];
+            int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_MAPPING;
+            res = match ? Py_True : Py_False;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_FOR_ITER) {
-            #line 2245 "Python/bytecodes.c"
-            _Py_CODEUNIT *here = next_instr-1;
-            _Py_CODEUNIT *target;
-            PyObject *iter = TOP();
-            PyObject *next = (*Py_TYPE(iter)->tp_iternext)(iter);
-            if (next != NULL) {
-                PUSH(next);
-                target = next_instr + INLINE_CACHE_ENTRIES_FOR_ITER;
-            }
-            else {
-                if (_PyErr_Occurred(tstate)) {
-                    if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
-                        goto error;
-                    }
-                    monitor_raise(tstate, frame, here);
-                    _PyErr_Clear(tstate);
-                }
-                /* iterator ended normally */
-                assert(next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == END_FOR ||
-                       next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == INSTRUMENTED_END_FOR);
-                STACK_SHRINK(1);
-                Py_DECREF(iter);
-                /* Skip END_FOR */
-                target = next_instr + INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1;
-            }
-            INSTRUMENTED_JUMP(here, target, PY_MONITORING_EVENT_BRANCH);
-            #line 3226 "Python/generated_cases.c.h"
-            DISPATCH();
-        }
-
-        TARGET(FOR_ITER_LIST) {
-            PyObject *iter = stack_pointer[-1];
-            PyObject *next;
-            #line 2273 "Python/bytecodes.c"
-            DEOPT_IF(Py_TYPE(iter) != &PyListIter_Type, FOR_ITER);
-            _PyListIterObject *it = (_PyListIterObject *)iter;
-            STAT_INC(FOR_ITER, hit);
-            PyListObject *seq = it->it_seq;
-            if (seq) {
-                if (it->it_index < PyList_GET_SIZE(seq)) {
-                    next = Py_NewRef(PyList_GET_ITEM(seq, it->it_index++));
-                    goto end_for_iter_list;  // End of this instruction
-                }
-                it->it_seq = NULL;
-                Py_DECREF(seq);
-            }
-            Py_DECREF(iter);
-            STACK_SHRINK(1);
-            /* Jump forward oparg, then skip following END_FOR instruction */
-            JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
-            DISPATCH();
-        end_for_iter_list:
-            // Common case: no jump, leave it to the code generator
-            #line 3253 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = next;
+        TARGET(MATCH_SEQUENCE) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(MATCH_SEQUENCE);
+            PyObject *subject;
+            PyObject *res;
+            subject = stack_pointer[-1];
+            int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_SEQUENCE;
+            res = match ? Py_True : Py_False;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(FOR_ITER_TUPLE) {
-            PyObject *iter = stack_pointer[-1];
-            PyObject *next;
-            #line 2295 "Python/bytecodes.c"
-            _PyTupleIterObject *it = (_PyTupleIterObject *)iter;
-            DEOPT_IF(Py_TYPE(it) != &PyTupleIter_Type, FOR_ITER);
-            STAT_INC(FOR_ITER, hit);
-            PyTupleObject *seq = it->it_seq;
-            if (seq) {
-                if (it->it_index < PyTuple_GET_SIZE(seq)) {
-                    next = Py_NewRef(PyTuple_GET_ITEM(seq, it->it_index++));
-                    goto end_for_iter_tuple;  // End of this instruction
-                }
-                it->it_seq = NULL;
-                Py_DECREF(seq);
-            }
-            Py_DECREF(iter);
-            STACK_SHRINK(1);
-            /* Jump forward oparg, then skip following END_FOR instruction */
-            JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
-            DISPATCH();
-        end_for_iter_tuple:
-            // Common case: no jump, leave it to the code generator
-            #line 3283 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = next;
+        TARGET(NOP) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(NOP);
             DISPATCH();
         }
 
-        TARGET(FOR_ITER_RANGE) {
-            PyObject *iter = stack_pointer[-1];
-            PyObject *next;
-            #line 2317 "Python/bytecodes.c"
-            _PyRangeIterObject *r = (_PyRangeIterObject *)iter;
-            DEOPT_IF(Py_TYPE(r) != &PyRangeIter_Type, FOR_ITER);
-            STAT_INC(FOR_ITER, hit);
-            if (r->len <= 0) {
-                STACK_SHRINK(1);
-                Py_DECREF(r);
-                // Jump over END_FOR instruction.
-                JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
-                DISPATCH();
-            }
-            long value = r->start;
-            r->start = value + r->step;
-            r->len--;
-            next = PyLong_FromLong(value);
-            if (next == NULL) {
-                goto error;
-            }
-            #line 3311 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = next;
+        TARGET(POP_EXCEPT) {
+            frame->instr_ptr = next_instr;
             next_instr += 1;
+            INSTRUCTION_STATS(POP_EXCEPT);
+            PyObject *exc_value;
+            exc_value = stack_pointer[-1];
+            _PyErr_StackItem *exc_info = tstate->exc_info;
+            Py_XSETREF(exc_info->exc_value, exc_value);
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(FOR_ITER_GEN) {
-            PyObject *iter = stack_pointer[-1];
-            #line 2337 "Python/bytecodes.c"
-            DEOPT_IF(tstate->interp->eval_frame, FOR_ITER);
-            PyGenObject *gen = (PyGenObject *)iter;
-            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type, FOR_ITER);
-            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING, FOR_ITER);
-            STAT_INC(FOR_ITER, hit);
-            _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-            frame->return_offset = oparg;
-            _PyFrame_StackPush(gen_frame, Py_NewRef(Py_None));
-            gen->gi_frame_state = FRAME_EXECUTING;
-            gen->gi_exc_state.previous_item = tstate->exc_info;
-            tstate->exc_info = &gen->gi_exc_state;
-            JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER);
-            assert(next_instr[oparg].op.code == END_FOR ||
-                   next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
-            DISPATCH_INLINED(gen_frame);
-            #line 3336 "Python/generated_cases.c.h"
+        TARGET(POP_JUMP_IF_FALSE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(POP_JUMP_IF_FALSE);
+            PyObject *cond;
+            cond = stack_pointer[-1];
+            assert(PyBool_Check(cond));
+            int flag = Py_IsFalse(cond);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            JUMPBY(oparg * flag);
+            stack_pointer += -1;
+            DISPATCH();
         }
 
-        TARGET(BEFORE_ASYNC_WITH) {
-            PyObject *mgr = stack_pointer[-1];
-            PyObject *exit;
-            PyObject *res;
-            #line 2355 "Python/bytecodes.c"
-            PyObject *enter = _PyObject_LookupSpecial(mgr, &_Py_ID(__aenter__));
-            if (enter == NULL) {
-                if (!_PyErr_Occurred(tstate)) {
-                    _PyErr_Format(tstate, PyExc_TypeError,
-                                  "'%.200s' object does not support the "
-                                  "asynchronous context manager protocol",
-                                  Py_TYPE(mgr)->tp_name);
+        TARGET(POP_JUMP_IF_NONE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(POP_JUMP_IF_NONE);
+            PyObject *value;
+            PyObject *b;
+            PyObject *cond;
+            // _IS_NONE
+            value = stack_pointer[-1];
+            {
+                if (Py_IsNone(value)) {
+                    b = Py_True;
                 }
-                goto error;
-            }
-            exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__aexit__));
-            if (exit == NULL) {
-                if (!_PyErr_Occurred(tstate)) {
-                    _PyErr_Format(tstate, PyExc_TypeError,
-                                  "'%.200s' object does not support the "
-                                  "asynchronous context manager protocol "
-                                  "(missed __aexit__ method)",
-                                  Py_TYPE(mgr)->tp_name);
+                else {
+                    b = Py_False;
+                    Py_DECREF(value);
                 }
-                Py_DECREF(enter);
-                goto error;
             }
-            #line 3366 "Python/generated_cases.c.h"
-            Py_DECREF(mgr);
-            #line 2378 "Python/bytecodes.c"
-            res = _PyObject_CallNoArgs(enter);
-            Py_DECREF(enter);
-            if (res == NULL) {
-                Py_DECREF(exit);
-                if (true) goto pop_1_error;
+            // _POP_JUMP_IF_TRUE
+            cond = b;
+            {
+                assert(PyBool_Check(cond));
+                int flag = Py_IsTrue(cond);
+                #if ENABLE_SPECIALIZATION
+                this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+                #endif
+                JUMPBY(oparg * flag);
             }
-            #line 3375 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
-            stack_pointer[-2] = exit;
-            PREDICT(GET_AWAITABLE);
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(BEFORE_WITH) {
-            PyObject *mgr = stack_pointer[-1];
-            PyObject *exit;
-            PyObject *res;
-            #line 2388 "Python/bytecodes.c"
-            /* pop the context manager, push its __exit__ and the
-             * value returned from calling its __enter__
-             */
-            PyObject *enter = _PyObject_LookupSpecial(mgr, &_Py_ID(__enter__));
-            if (enter == NULL) {
-                if (!_PyErr_Occurred(tstate)) {
-                    _PyErr_Format(tstate, PyExc_TypeError,
-                                  "'%.200s' object does not support the "
-                                  "context manager protocol",
-                                  Py_TYPE(mgr)->tp_name);
+        TARGET(POP_JUMP_IF_NOT_NONE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(POP_JUMP_IF_NOT_NONE);
+            PyObject *value;
+            PyObject *b;
+            PyObject *cond;
+            // _IS_NONE
+            value = stack_pointer[-1];
+            {
+                if (Py_IsNone(value)) {
+                    b = Py_True;
                 }
-                goto error;
-            }
-            exit = _PyObject_LookupSpecial(mgr, &_Py_ID(__exit__));
-            if (exit == NULL) {
-                if (!_PyErr_Occurred(tstate)) {
-                    _PyErr_Format(tstate, PyExc_TypeError,
-                                  "'%.200s' object does not support the "
-                                  "context manager protocol "
-                                  "(missed __exit__ method)",
-                                  Py_TYPE(mgr)->tp_name);
+                else {
+                    b = Py_False;
+                    Py_DECREF(value);
                 }
-                Py_DECREF(enter);
-                goto error;
             }
-            #line 3413 "Python/generated_cases.c.h"
-            Py_DECREF(mgr);
-            #line 2414 "Python/bytecodes.c"
-            res = _PyObject_CallNoArgs(enter);
-            Py_DECREF(enter);
-            if (res == NULL) {
-                Py_DECREF(exit);
-                if (true) goto pop_1_error;
+            // _POP_JUMP_IF_FALSE
+            cond = b;
+            {
+                assert(PyBool_Check(cond));
+                int flag = Py_IsFalse(cond);
+                #if ENABLE_SPECIALIZATION
+                this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+                #endif
+                JUMPBY(oparg * flag);
             }
-            #line 3422 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
-            stack_pointer[-2] = exit;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(WITH_EXCEPT_START) {
-            PyObject *val = stack_pointer[-1];
-            PyObject *lasti = stack_pointer[-3];
-            PyObject *exit_func = stack_pointer[-4];
-            PyObject *res;
-            #line 2423 "Python/bytecodes.c"
-            /* At the top of the stack are 4 values:
-               - val: TOP = exc_info()
-               - unused: SECOND = previous exception
-               - lasti: THIRD = lasti of exception in exc_info()
-               - exit_func: FOURTH = the context.__exit__ bound method
-               We call FOURTH(type(TOP), TOP, GetTraceback(TOP)).
-               Then we push the __exit__ return value.
-            */
-            PyObject *exc, *tb;
+        TARGET(POP_JUMP_IF_TRUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(POP_JUMP_IF_TRUE);
+            PyObject *cond;
+            cond = stack_pointer[-1];
+            assert(PyBool_Check(cond));
+            int flag = Py_IsTrue(cond);
+            #if ENABLE_SPECIALIZATION
+            this_instr[1].cache = (this_instr[1].cache << 1) | flag;
+            #endif
+            JUMPBY(oparg * flag);
+            stack_pointer += -1;
+            DISPATCH();
+        }
 
-            assert(val && PyExceptionInstance_Check(val));
-            exc = PyExceptionInstance_Class(val);
-            tb = PyException_GetTraceback(val);
-            Py_XDECREF(tb);
-            assert(PyLong_Check(lasti));
-            (void)lasti; // Shut up compiler warning if asserts are off
-            PyObject *stack[4] = {NULL, exc, val, tb};
-            res = PyObject_Vectorcall(exit_func, stack + 1,
-                    3 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
-            if (res == NULL) goto error;
-            #line 3455 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = res;
+        TARGET(POP_TOP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(POP_TOP);
+            PyObject *value;
+            value = stack_pointer[-1];
+            Py_DECREF(value);
+            stack_pointer += -1;
             DISPATCH();
         }
 
         TARGET(PUSH_EXC_INFO) {
-            PyObject *new_exc = stack_pointer[-1];
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(PUSH_EXC_INFO);
+            PyObject *new_exc;
             PyObject *prev_exc;
-            #line 2446 "Python/bytecodes.c"
+            new_exc = stack_pointer[-1];
             _PyErr_StackItem *exc_info = tstate->exc_info;
             if (exc_info->exc_value != NULL) {
                 prev_exc = exc_info->exc_value;
             }
             else {
-                prev_exc = Py_NewRef(Py_None);
+                prev_exc = Py_None;
             }
             assert(PyExceptionInstance_Check(new_exc));
             exc_info->exc_value = Py_NewRef(new_exc);
-            #line 3474 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = new_exc;
-            stack_pointer[-2] = prev_exc;
+            stack_pointer[-1] = prev_exc;
+            stack_pointer[0] = new_exc;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(LOAD_ATTR_METHOD_WITH_VALUES) {
-            PyObject *self = stack_pointer[-1];
-            PyObject *res2 = NULL;
+        TARGET(PUSH_NULL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(PUSH_NULL);
             PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            uint32_t keys_version = read_u32(&next_instr[3].cache);
-            PyObject *descr = read_obj(&next_instr[5].cache);
-            #line 2458 "Python/bytecodes.c"
-            /* Cached method object */
-            PyTypeObject *self_cls = Py_TYPE(self);
-            assert(type_version != 0);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR);
-            assert(self_cls->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(self);
-            DEOPT_IF(!_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
-            PyHeapTypeObject *self_heap_type = (PyHeapTypeObject *)self_cls;
-            DEOPT_IF(self_heap_type->ht_cached_keys->dk_version !=
-                     keys_version, LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            assert(descr != NULL);
-            res2 = Py_NewRef(descr);
-            assert(_PyType_HasFeature(Py_TYPE(res2), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            res = self;
-            assert(oparg & 1);
-            #line 3505 "Python/generated_cases.c.h"
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+            res = NULL;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
             DISPATCH();
         }
 
-        TARGET(LOAD_ATTR_METHOD_NO_DICT) {
-            PyObject *self = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            PyObject *descr = read_obj(&next_instr[5].cache);
-            #line 2477 "Python/bytecodes.c"
-            PyTypeObject *self_cls = Py_TYPE(self);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR);
-            assert(self_cls->tp_dictoffset == 0);
-            STAT_INC(LOAD_ATTR, hit);
-            assert(descr != NULL);
-            assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            res2 = Py_NewRef(descr);
-            res = self;
-            assert(oparg & 1);
-            #line 3529 "Python/generated_cases.c.h"
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
-            DISPATCH();
+        TARGET(RAISE_VARARGS) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RAISE_VARARGS);
+            PyObject **args;
+            args = &stack_pointer[-oparg];
+            TIER_ONE_ONLY
+            PyObject *cause = NULL, *exc = NULL;
+            switch (oparg) {
+                case 2:
+                cause = args[1];
+                /* fall through */
+                case 1:
+                exc = args[0];
+                /* fall through */
+                case 0:
+                if (do_raise(tstate, exc, cause)) {
+                    assert(oparg == 0);
+                    monitor_reraise(tstate, frame, this_instr);
+                    goto exception_unwind;
+                }
+                break;
+                default:
+                _PyErr_SetString(tstate, PyExc_SystemError,
+                                 "bad RAISE_VARARGS oparg");
+                break;
+            }
+            if (true) { stack_pointer += -oparg; goto error; }
         }
 
-        TARGET(LOAD_ATTR_METHOD_LAZY_DICT) {
-            PyObject *self = stack_pointer[-1];
-            PyObject *res2 = NULL;
-            PyObject *res;
-            uint32_t type_version = read_u32(&next_instr[1].cache);
-            PyObject *descr = read_obj(&next_instr[5].cache);
-            #line 2489 "Python/bytecodes.c"
-            PyTypeObject *self_cls = Py_TYPE(self);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR);
-            Py_ssize_t dictoffset = self_cls->tp_dictoffset;
-            assert(dictoffset > 0);
-            PyObject *dict = *(PyObject **)((char *)self + dictoffset);
-            /* This object has a __dict__, just not yet created */
-            DEOPT_IF(dict != NULL, LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            assert(descr != NULL);
-            assert(_PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            res2 = Py_NewRef(descr);
-            res = self;
-            assert(oparg & 1);
-            #line 3557 "Python/generated_cases.c.h"
-            STACK_GROW(((oparg & 1) ? 1 : 0));
-            stack_pointer[-1] = res;
-            if (oparg & 1) { stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))] = res2; }
-            next_instr += 9;
+        TARGET(RERAISE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RERAISE);
+            PyObject *exc;
+            PyObject **values;
+            exc = stack_pointer[-1];
+            values = &stack_pointer[-1 - oparg];
+            TIER_ONE_ONLY
+            assert(oparg >= 0 && oparg <= 2);
+            if (oparg) {
+                PyObject *lasti = values[0];
+                if (PyLong_Check(lasti)) {
+                    frame->instr_ptr = _PyCode_CODE(_PyFrame_GetCode(frame)) + PyLong_AsLong(lasti);
+                    assert(!_PyErr_Occurred(tstate));
+                }
+                else {
+                    assert(PyLong_Check(lasti));
+                    _PyErr_SetString(tstate, PyExc_SystemError, "lasti is not an int");
+                    GOTO_ERROR(error);
+                }
+            }
+            assert(exc && PyExceptionInstance_Check(exc));
+            Py_INCREF(exc);
+            _PyErr_SetRaisedException(tstate, exc);
+            monitor_reraise(tstate, frame, this_instr);
+            goto exception_unwind;
+        }
+
+        TARGET(RESERVED) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RESERVED);
+            assert(0 && "Executing RESERVED instruction.");
+            Py_UNREACHABLE();
+        }
+
+        TARGET(RESUME) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RESUME);
+            PREDICTED(RESUME);
+            _Py_CODEUNIT *this_instr = next_instr - 1;
+            TIER_ONE_ONLY
+            assert(frame == tstate->current_frame);
+            uintptr_t global_version =
+            _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker) &
+            ~_PY_EVAL_EVENTS_MASK;
+            uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            assert((code_version & 255) == 0);
+            if (code_version != global_version) {
+                int err = _Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
+                if (err) goto error;
+                next_instr = this_instr;
+            }
+            else {
+                if ((oparg & RESUME_OPARG_LOCATION_MASK) < RESUME_AFTER_YIELD_FROM) {
+                    CHECK_EVAL_BREAKER();
+                }
+                this_instr->op.code = RESUME_CHECK;
+            }
             DISPATCH();
         }
 
-        TARGET(KW_NAMES) {
-            #line 2505 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            assert(oparg < PyTuple_GET_SIZE(frame->f_code->co_consts));
-            kwnames = GETITEM(frame->f_code->co_consts, oparg);
-            #line 3570 "Python/generated_cases.c.h"
+        TARGET(RESUME_CHECK) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RESUME_CHECK);
+            static_assert(0 == 0, "incorrect cache size");
+            #if defined(__EMSCRIPTEN__)
+            DEOPT_IF(_Py_emscripten_signal_clock == 0, RESUME);
+            _Py_emscripten_signal_clock -= Py_EMSCRIPTEN_SIGNAL_HANDLING;
+            #endif
+            uintptr_t eval_breaker = _Py_atomic_load_uintptr_relaxed(&tstate->interp->ceval.eval_breaker);
+            uintptr_t version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
+            assert((version & _PY_EVAL_EVENTS_MASK) == 0);
+            DEOPT_IF(eval_breaker != version, RESUME);
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_CALL) {
-            #line 2511 "Python/bytecodes.c"
-            int is_meth = PEEK(oparg+2) != NULL;
-            int total_args = oparg + is_meth;
-            PyObject *function = PEEK(total_args + 1);
-            PyObject *arg = total_args == 0 ?
-                &_PyInstrumentation_MISSING : PEEK(total_args);
-            int err = _Py_call_instrumentation_2args(
-                    tstate, PY_MONITORING_EVENT_CALL,
-                    frame, next_instr-1, function, arg);
-            if (err) goto error;
-            _PyCallCache *cache = (_PyCallCache *)next_instr;
-            INCREMENT_ADAPTIVE_COUNTER(cache->counter);
-            GO_TO_INSTRUCTION(CALL);
-            #line 3588 "Python/generated_cases.c.h"
+        TARGET(RETURN_CONST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RETURN_CONST);
+            PyObject *value;
+            PyObject *retval;
+            // _LOAD_CONST
+            {
+                value = GETITEM(FRAME_CO_CONSTS, oparg);
+                Py_INCREF(value);
+            }
+            // _POP_FRAME
+            retval = value;
+            {
+                #if TIER_ONE
+                assert(frame != &entry_frame);
+                #endif
+                _PyFrame_SetStackPointer(frame, stack_pointer);
+                assert(EMPTY());
+                _Py_LeaveRecursiveCallPy(tstate);
+                // GH-99729: We need to unlink the frame *before* clearing it:
+                _PyInterpreterFrame *dying = frame;
+                frame = tstate->current_frame = dying->previous;
+                _PyEval_FrameClearAndPop(tstate, dying);
+                _PyFrame_StackPush(frame, retval);
+                LOAD_SP();
+                LOAD_IP(frame->return_offset);
+                #if LLTRACE && TIER_ONE
+                lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+                if (lltrace < 0) {
+                    goto exit_unwind;
+                }
+                #endif
+            }
+            DISPATCH();
         }
 
-        TARGET(CALL) {
-            PREDICTED(CALL);
-            static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2556 "Python/bytecodes.c"
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
+        TARGET(RETURN_GENERATOR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RETURN_GENERATOR);
+            assert(PyFunction_Check(frame->f_funcobj));
+            PyFunctionObject *func = (PyFunctionObject *)frame->f_funcobj;
+            PyGenObject *gen = (PyGenObject *)_Py_MakeCoro(func);
+            if (gen == NULL) {
+                GOTO_ERROR(error);
             }
-            #if ENABLE_SPECIALIZATION
-            _PyCallCache *cache = (_PyCallCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_Call(callable, next_instr, total_args, kwnames);
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(CALL, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            if (!is_meth && Py_TYPE(callable) == &PyMethod_Type) {
-                is_meth = 1;  // For consistenct; it's dead, though
-                args--;
-                total_args++;
-                PyObject *self = ((PyMethodObject *)callable)->im_self;
-                args[0] = Py_NewRef(self);
-                method = ((PyMethodObject *)callable)->im_func;
-                args[-1] = Py_NewRef(method);
-                Py_DECREF(callable);
-                callable = method;
+            assert(EMPTY());
+            _PyFrame_SetStackPointer(frame, stack_pointer);
+            _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
+            frame->instr_ptr = next_instr;
+            _PyFrame_Copy(frame, gen_frame);
+            assert(frame->frame_obj == NULL);
+            gen->gi_frame_state = FRAME_CREATED;
+            gen_frame->owner = FRAME_OWNED_BY_GENERATOR;
+            _Py_LeaveRecursiveCallPy(tstate);
+            assert(frame != &entry_frame);
+            _PyInterpreterFrame *prev = frame->previous;
+            _PyThreadState_PopFrame(tstate, frame);
+            frame = tstate->current_frame = prev;
+            _PyFrame_StackPush(frame, (PyObject *)gen);
+            LOAD_IP(frame->return_offset);
+            goto resume_frame;
+        }
+
+        TARGET(RETURN_VALUE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(RETURN_VALUE);
+            PyObject *retval;
+            retval = stack_pointer[-1];
+            #if TIER_ONE
+            assert(frame != &entry_frame);
+            #endif
+            stack_pointer += -1;
+            _PyFrame_SetStackPointer(frame, stack_pointer);
+            assert(EMPTY());
+            _Py_LeaveRecursiveCallPy(tstate);
+            // GH-99729: We need to unlink the frame *before* clearing it:
+            _PyInterpreterFrame *dying = frame;
+            frame = tstate->current_frame = dying->previous;
+            _PyEval_FrameClearAndPop(tstate, dying);
+            _PyFrame_StackPush(frame, retval);
+            LOAD_SP();
+            LOAD_IP(frame->return_offset);
+            #if LLTRACE && TIER_ONE
+            lltrace = maybe_lltrace_resume_frame(frame, &entry_frame, GLOBALS());
+            if (lltrace < 0) {
+                goto exit_unwind;
             }
-            int positional_args = total_args - KWNAMES_LEN();
-            // Check if the call can be inlined or not
-            if (Py_TYPE(callable) == &PyFunction_Type &&
-                tstate->interp->eval_frame == NULL &&
-                ((PyFunctionObject *)callable)->vectorcall == _PyFunction_Vectorcall)
+            #endif
+            DISPATCH();
+        }
+
+        TARGET(SEND) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(SEND);
+            PREDICTED(SEND);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *receiver;
+            PyObject *v;
+            PyObject *retval;
+            // _SPECIALIZE_SEND
+            receiver = stack_pointer[-2];
             {
-                int code_flags = ((PyCodeObject*)PyFunction_GET_CODE(callable))->co_flags;
-                PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(callable));
-                _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit(
-                    tstate, (PyFunctionObject *)callable, locals,
-                    args, positional_args, kwnames
-                );
-                kwnames = NULL;
-                // Manipulate stack directly since we leave using DISPATCH_INLINED().
-                STACK_SHRINK(oparg + 2);
-                // The frame has stolen all the arguments from the stack,
-                // so there is no need to clean them up.
-                if (new_frame == NULL) {
-                    goto error;
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_Send(receiver, next_instr);
+                    DISPATCH_SAME_OPARG();
                 }
-                JUMPBY(INLINE_CACHE_ENTRIES_CALL);
-                frame->return_offset = 0;
-                DISPATCH_INLINED(new_frame);
+                STAT_INC(SEND, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            /* Callable is not a normal Python function */
-            res = PyObject_Vectorcall(
-                callable, args,
-                positional_args | PY_VECTORCALL_ARGUMENTS_OFFSET,
-                kwnames);
-            if (opcode == INSTRUMENTED_CALL) {
-                PyObject *arg = total_args == 0 ?
-                    &_PyInstrumentation_MISSING : PEEK(total_args);
-                if (res == NULL) {
-                    _Py_call_instrumentation_exc2(
-                        tstate, PY_MONITORING_EVENT_C_RAISE,
-                        frame, next_instr-1, callable, arg);
+            // _SEND
+            v = stack_pointer[-1];
+            {
+                assert(frame != &entry_frame);
+                if ((tstate->interp->eval_frame == NULL) &&
+                    (Py_TYPE(receiver) == &PyGen_Type || Py_TYPE(receiver) == &PyCoro_Type) &&
+                    ((PyGenObject *)receiver)->gi_frame_state < FRAME_EXECUTING)
+                {
+                    PyGenObject *gen = (PyGenObject *)receiver;
+                    _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
+                    STACK_SHRINK(1);
+                    _PyFrame_StackPush(gen_frame, v);
+                    gen->gi_frame_state = FRAME_EXECUTING;
+                    gen->gi_exc_state.previous_item = tstate->exc_info;
+                    tstate->exc_info = &gen->gi_exc_state;
+                    assert(next_instr - this_instr + oparg <= UINT16_MAX);
+                    frame->return_offset = (uint16_t)(next_instr - this_instr + oparg);
+                    DISPATCH_INLINED(gen_frame);
+                }
+                if (Py_IsNone(v) && PyIter_Check(receiver)) {
+                    retval = Py_TYPE(receiver)->tp_iternext(receiver);
                 }
                 else {
-                    int err = _Py_call_instrumentation_2args(
-                        tstate, PY_MONITORING_EVENT_C_RETURN,
-                        frame, next_instr-1, callable, arg);
-                    if (err < 0) {
-                        Py_CLEAR(res);
+                    retval = PyObject_CallMethodOneArg(receiver, &_Py_ID(send), v);
+                }
+                if (retval == NULL) {
+                    if (_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)
+                    ) {
+                        monitor_raise(tstate, frame, this_instr);
+                    }
+                    if (_PyGen_FetchStopIterationValue(&retval) == 0) {
+                        assert(retval != NULL);
+                        JUMPBY(oparg);
+                    }
+                    else {
+                        GOTO_ERROR(error);
                     }
                 }
+                Py_DECREF(v);
             }
-            kwnames = NULL;
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            Py_DECREF(callable);
-            for (int i = 0; i < total_args; i++) {
-                Py_DECREF(args[i]);
-            }
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 3680 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            stack_pointer[-1] = retval;
             DISPATCH();
         }
 
-        TARGET(CALL_BOUND_METHOD_EXACT_ARGS) {
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            #line 2644 "Python/bytecodes.c"
-            DEOPT_IF(method != NULL, CALL);
-            DEOPT_IF(Py_TYPE(callable) != &PyMethod_Type, CALL);
-            STAT_INC(CALL, hit);
-            PyObject *self = ((PyMethodObject *)callable)->im_self;
-            PEEK(oparg + 1) = Py_NewRef(self);  // callable
-            PyObject *meth = ((PyMethodObject *)callable)->im_func;
-            PEEK(oparg + 2) = Py_NewRef(meth);  // method
-            Py_DECREF(callable);
-            GO_TO_INSTRUCTION(CALL_PY_EXACT_ARGS);
-            #line 3702 "Python/generated_cases.c.h"
-        }
-
-        TARGET(CALL_PY_EXACT_ARGS) {
-            PREDICTED(CALL_PY_EXACT_ARGS);
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            uint32_t func_version = read_u32(&next_instr[1].cache);
-            #line 2656 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            DEOPT_IF(tstate->interp->eval_frame, CALL);
-            int is_meth = method != NULL;
-            int argcount = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                argcount++;
-            }
-            DEOPT_IF(!PyFunction_Check(callable), CALL);
-            PyFunctionObject *func = (PyFunctionObject *)callable;
-            DEOPT_IF(func->func_version != func_version, CALL);
-            PyCodeObject *code = (PyCodeObject *)func->func_code;
-            DEOPT_IF(code->co_argcount != argcount, CALL);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
-            STAT_INC(CALL, hit);
-            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, func, argcount);
-            for (int i = 0; i < argcount; i++) {
-                new_frame->localsplus[i] = args[i];
-            }
-            // Manipulate stack directly since we leave using DISPATCH_INLINED().
-            STACK_SHRINK(oparg + 2);
-            JUMPBY(INLINE_CACHE_ENTRIES_CALL);
-            frame->return_offset = 0;
-            DISPATCH_INLINED(new_frame);
-            #line 3737 "Python/generated_cases.c.h"
-        }
-
-        TARGET(CALL_PY_WITH_DEFAULTS) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            uint32_t func_version = read_u32(&next_instr[1].cache);
-            #line 2684 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            DEOPT_IF(tstate->interp->eval_frame, CALL);
-            int is_meth = method != NULL;
-            int argcount = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                argcount++;
-            }
-            DEOPT_IF(!PyFunction_Check(callable), CALL);
-            PyFunctionObject *func = (PyFunctionObject *)callable;
-            DEOPT_IF(func->func_version != func_version, CALL);
-            PyCodeObject *code = (PyCodeObject *)func->func_code;
-            assert(func->func_defaults);
-            assert(PyTuple_CheckExact(func->func_defaults));
-            int defcount = (int)PyTuple_GET_SIZE(func->func_defaults);
-            assert(defcount <= code->co_argcount);
-            int min_args = code->co_argcount - defcount;
-            DEOPT_IF(argcount > code->co_argcount, CALL);
-            DEOPT_IF(argcount < min_args, CALL);
-            DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), CALL);
-            STAT_INC(CALL, hit);
-            _PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, func, code->co_argcount);
-            for (int i = 0; i < argcount; i++) {
-                new_frame->localsplus[i] = args[i];
+        TARGET(SEND_GEN) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(SEND_GEN);
+            static_assert(INLINE_CACHE_ENTRIES_SEND == 1, "incorrect cache size");
+            PyObject *v;
+            PyObject *receiver;
+            v = stack_pointer[-1];
+            receiver = stack_pointer[-2];
+            DEOPT_IF(tstate->interp->eval_frame, SEND);
+            PyGenObject *gen = (PyGenObject *)receiver;
+            DEOPT_IF(Py_TYPE(gen) != &PyGen_Type && Py_TYPE(gen) != &PyCoro_Type, SEND);
+            DEOPT_IF(gen->gi_frame_state >= FRAME_EXECUTING, SEND);
+            STAT_INC(SEND, hit);
+            _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
+            STACK_SHRINK(1);
+            _PyFrame_StackPush(gen_frame, v);
+            gen->gi_frame_state = FRAME_EXECUTING;
+            gen->gi_exc_state.previous_item = tstate->exc_info;
+            tstate->exc_info = &gen->gi_exc_state;
+            assert(next_instr - this_instr + oparg <= UINT16_MAX);
+            frame->return_offset = (uint16_t)(next_instr - this_instr + oparg);
+            DISPATCH_INLINED(gen_frame);
+        }
+
+        TARGET(SETUP_ANNOTATIONS) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(SETUP_ANNOTATIONS);
+            int err;
+            PyObject *ann_dict;
+            if (LOCALS() == NULL) {
+                _PyErr_Format(tstate, PyExc_SystemError,
+                              "no locals found when setting up annotations");
+                if (true) goto error;
             }
-            for (int i = argcount; i < code->co_argcount; i++) {
-                PyObject *def = PyTuple_GET_ITEM(func->func_defaults, i - min_args);
-                new_frame->localsplus[i] = Py_NewRef(def);
+            /* check if __annotations__ in locals()... */
+            if (PyMapping_GetOptionalItem(LOCALS(), &_Py_ID(__annotations__), &ann_dict) < 0) goto error;
+            if (ann_dict == NULL) {
+                ann_dict = PyDict_New();
+                if (ann_dict == NULL) goto error;
+                err = PyObject_SetItem(LOCALS(), &_Py_ID(__annotations__),
+                                       ann_dict);
+                Py_DECREF(ann_dict);
+                if (err) goto error;
             }
-            // Manipulate stack and cache directly since we leave using DISPATCH_INLINED().
-            STACK_SHRINK(oparg + 2);
-            JUMPBY(INLINE_CACHE_ENTRIES_CALL);
-            frame->return_offset = 0;
-            DISPATCH_INLINED(new_frame);
-            #line 3781 "Python/generated_cases.c.h"
+            else {
+                Py_DECREF(ann_dict);
+            }
+            DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_TYPE_1) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *null = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2722 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            assert(oparg == 1);
-            DEOPT_IF(null != NULL, CALL);
-            PyObject *obj = args[0];
-            DEOPT_IF(callable != (PyObject *)&PyType_Type, CALL);
-            STAT_INC(CALL, hit);
-            res = Py_NewRef(Py_TYPE(obj));
-            Py_DECREF(obj);
-            Py_DECREF(&PyType_Type);  // I.e., callable
-            #line 3799 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
+        TARGET(SET_ADD) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(SET_ADD);
+            PyObject *v;
+            PyObject *set;
+            v = stack_pointer[-1];
+            set = stack_pointer[-2 - (oparg-1)];
+            int err = PySet_Add(set, v);
+            Py_DECREF(v);
+            if (err) goto pop_1_error;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_STR_1) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *null = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2734 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            assert(oparg == 1);
-            DEOPT_IF(null != NULL, CALL);
-            DEOPT_IF(callable != (PyObject *)&PyUnicode_Type, CALL);
-            STAT_INC(CALL, hit);
-            PyObject *arg = args[0];
-            res = PyObject_Str(arg);
-            Py_DECREF(arg);
-            Py_DECREF(&PyUnicode_Type);  // I.e., callable
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 3823 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+        TARGET(SET_FUNCTION_ATTRIBUTE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(SET_FUNCTION_ATTRIBUTE);
+            PyObject *func;
+            PyObject *attr;
+            func = stack_pointer[-1];
+            attr = stack_pointer[-2];
+            assert(PyFunction_Check(func));
+            PyFunctionObject *func_obj = (PyFunctionObject *)func;
+            switch(oparg) {
+                case MAKE_FUNCTION_CLOSURE:
+                assert(func_obj->func_closure == NULL);
+                func_obj->func_closure = attr;
+                break;
+                case MAKE_FUNCTION_ANNOTATIONS:
+                assert(func_obj->func_annotations == NULL);
+                func_obj->func_annotations = attr;
+                break;
+                case MAKE_FUNCTION_KWDEFAULTS:
+                assert(PyDict_CheckExact(attr));
+                assert(func_obj->func_kwdefaults == NULL);
+                func_obj->func_kwdefaults = attr;
+                break;
+                case MAKE_FUNCTION_DEFAULTS:
+                assert(PyTuple_CheckExact(attr));
+                assert(func_obj->func_defaults == NULL);
+                func_obj->func_defaults = attr;
+                break;
+                default:
+                Py_UNREACHABLE();
+            }
+            stack_pointer[-2] = func;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_TUPLE_1) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *null = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2748 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            assert(oparg == 1);
-            DEOPT_IF(null != NULL, CALL);
-            DEOPT_IF(callable != (PyObject *)&PyTuple_Type, CALL);
-            STAT_INC(CALL, hit);
-            PyObject *arg = args[0];
-            res = PySequence_Tuple(arg);
-            Py_DECREF(arg);
-            Py_DECREF(&PyTuple_Type);  // I.e., tuple
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 3848 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+        TARGET(SET_UPDATE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(SET_UPDATE);
+            PyObject *iterable;
+            PyObject *set;
+            iterable = stack_pointer[-1];
+            set = stack_pointer[-2 - (oparg-1)];
+            int err = _PySet_Update(set, iterable);
+            Py_DECREF(iterable);
+            if (err < 0) goto pop_1_error;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(CALL_BUILTIN_CLASS) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2762 "Python/bytecodes.c"
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
+        TARGET(STORE_ATTR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(STORE_ATTR);
+            PREDICTED(STORE_ATTR);
+            _Py_CODEUNIT *this_instr = next_instr - 5;
+            PyObject *owner;
+            PyObject *v;
+            // _SPECIALIZE_STORE_ATTR
+            owner = stack_pointer[-1];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+                    next_instr = this_instr;
+                    _Py_Specialize_StoreAttr(owner, next_instr, name);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(STORE_ATTR, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            int kwnames_len = KWNAMES_LEN();
-            DEOPT_IF(!PyType_Check(callable), CALL);
-            PyTypeObject *tp = (PyTypeObject *)callable;
-            DEOPT_IF(tp->tp_vectorcall == NULL, CALL);
-            STAT_INC(CALL, hit);
-            res = tp->tp_vectorcall((PyObject *)tp, args,
-                                    total_args - kwnames_len, kwnames);
-            kwnames = NULL;
-            /* Free the arguments. */
-            for (int i = 0; i < total_args; i++) {
-                Py_DECREF(args[i]);
+            // _STORE_ATTR
+            v = stack_pointer[-2];
+            {
+                PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+                int err = PyObject_SetAttr(owner, name, v);
+                Py_DECREF(v);
+                Py_DECREF(owner);
+                if (err) goto pop_2_error;
             }
-            Py_DECREF(tp);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 3884 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_BUILTIN_O) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2787 "Python/bytecodes.c"
-            /* Builtin METH_O functions */
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
+        TARGET(STORE_ATTR_INSTANCE_VALUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(STORE_ATTR_INSTANCE_VALUE);
+            static_assert(INLINE_CACHE_ENTRIES_STORE_ATTR == 4, "incorrect cache size");
+            PyObject *owner;
+            PyObject *value;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
             }
-            DEOPT_IF(total_args != 1, CALL);
-            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
-            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_O, CALL);
-            STAT_INC(CALL, hit);
-            PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
-            // This is slower but CPython promises to check all non-vectorcall
-            // function calls.
-            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
-                goto error;
+            // _GUARD_DORV_VALUES
+            {
+                assert(Py_TYPE(owner)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+                PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+                DEOPT_IF(!_PyDictOrValues_IsValues(dorv), STORE_ATTR);
             }
-            PyObject *arg = args[0];
-            res = _PyCFunction_TrampolineCall(cfunc, PyCFunction_GET_SELF(callable), arg);
-            _Py_LeaveRecursiveCallTstate(tstate);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-
-            Py_DECREF(arg);
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 3926 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            // _STORE_ATTR_INSTANCE_VALUE
+            value = stack_pointer[-2];
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+                STAT_INC(STORE_ATTR, hit);
+                PyDictValues *values = _PyDictOrValues_GetValues(dorv);
+                PyObject *old_value = values->values[index];
+                values->values[index] = value;
+                if (old_value == NULL) {
+                    _PyDictValues_AddToInsertionOrder(values, index);
+                }
+                else {
+                    Py_DECREF(old_value);
+                }
+                Py_DECREF(owner);
+            }
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_BUILTIN_FAST) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2818 "Python/bytecodes.c"
-            /* Builtin METH_FASTCALL functions, without keywords */
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
+        TARGET(STORE_ATTR_SLOT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(STORE_ATTR_SLOT);
+            static_assert(INLINE_CACHE_ENTRIES_STORE_ATTR == 4, "incorrect cache size");
+            PyObject *owner;
+            PyObject *value;
+            /* Skip 1 cache entry */
+            // _GUARD_TYPE_VERSION
+            owner = stack_pointer[-1];
+            {
+                uint32_t type_version = read_u32(&this_instr[2].cache);
+                PyTypeObject *tp = Py_TYPE(owner);
+                assert(type_version != 0);
+                DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
             }
-            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
-            DEOPT_IF(PyCFunction_GET_FLAGS(callable) != METH_FASTCALL, CALL);
-            STAT_INC(CALL, hit);
-            PyCFunction cfunc = PyCFunction_GET_FUNCTION(callable);
-            /* res = func(self, args, nargs) */
-            res = ((_PyCFunctionFast)(void(*)(void))cfunc)(
-                PyCFunction_GET_SELF(callable),
-                args,
-                total_args);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-
-            /* Free the arguments. */
-            for (int i = 0; i < total_args; i++) {
-                Py_DECREF(args[i]);
+            // _STORE_ATTR_SLOT
+            value = stack_pointer[-2];
+            {
+                uint16_t index = read_u16(&this_instr[4].cache);
+                char *addr = (char *)owner + index;
+                STAT_INC(STORE_ATTR, hit);
+                PyObject *old_value = *(PyObject **)addr;
+                *(PyObject **)addr = value;
+                Py_XDECREF(old_value);
+                Py_DECREF(owner);
             }
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-                /* Not deopting because this doesn't mean our optimization was
-                   wrong. `res` can be NULL for valid reasons. Eg. getattr(x,
-                   'invalid'). In those cases an exception is set, so we must
-                   handle it.
-                */
-            #line 3972 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(CALL_BUILTIN_FAST_WITH_KEYWORDS) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2853 "Python/bytecodes.c"
-            /* Builtin METH_FASTCALL | METH_KEYWORDS functions */
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
+        TARGET(STORE_ATTR_WITH_HINT) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 5;
+            INSTRUCTION_STATS(STORE_ATTR_WITH_HINT);
+            static_assert(INLINE_CACHE_ENTRIES_STORE_ATTR == 4, "incorrect cache size");
+            PyObject *owner;
+            PyObject *value;
+            owner = stack_pointer[-1];
+            value = stack_pointer[-2];
+            uint32_t type_version = read_u32(&this_instr[2].cache);
+            uint16_t hint = read_u16(&this_instr[4].cache);
+            PyTypeObject *tp = Py_TYPE(owner);
+            assert(type_version != 0);
+            DEOPT_IF(tp->tp_version_tag != type_version, STORE_ATTR);
+            assert(tp->tp_flags & Py_TPFLAGS_MANAGED_DICT);
+            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+            DEOPT_IF(_PyDictOrValues_IsValues(dorv), STORE_ATTR);
+            PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+            DEOPT_IF(dict == NULL, STORE_ATTR);
+            assert(PyDict_CheckExact((PyObject *)dict));
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            DEOPT_IF(hint >= (size_t)dict->ma_keys->dk_nentries, STORE_ATTR);
+            PyObject *old_value;
+            uint64_t new_version;
+            if (DK_IS_UNICODE(dict->ma_keys)) {
+                PyDictUnicodeEntry *ep = DK_UNICODE_ENTRIES(dict->ma_keys) + hint;
+                DEOPT_IF(ep->me_key != name, STORE_ATTR);
+                old_value = ep->me_value;
+                DEOPT_IF(old_value == NULL, STORE_ATTR);
+                new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
+                ep->me_value = value;
             }
-            DEOPT_IF(!PyCFunction_CheckExact(callable), CALL);
-            DEOPT_IF(PyCFunction_GET_FLAGS(callable) !=
-                (METH_FASTCALL | METH_KEYWORDS), CALL);
-            STAT_INC(CALL, hit);
-            /* res = func(self, args, nargs, kwnames) */
-            _PyCFunctionFastWithKeywords cfunc =
-                (_PyCFunctionFastWithKeywords)(void(*)(void))
-                PyCFunction_GET_FUNCTION(callable);
-            res = cfunc(
-                PyCFunction_GET_SELF(callable),
-                args,
-                total_args - KWNAMES_LEN(),
-                kwnames
-            );
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            kwnames = NULL;
-
-            /* Free the arguments. */
-            for (int i = 0; i < total_args; i++) {
-                Py_DECREF(args[i]);
+            else {
+                PyDictKeyEntry *ep = DK_ENTRIES(dict->ma_keys) + hint;
+                DEOPT_IF(ep->me_key != name, STORE_ATTR);
+                old_value = ep->me_value;
+                DEOPT_IF(old_value == NULL, STORE_ATTR);
+                new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
+                ep->me_value = value;
             }
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4018 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            Py_DECREF(old_value);
+            STAT_INC(STORE_ATTR, hit);
+            /* Ensure dict is GC tracked if it needs to be */
+            if (!_PyObject_GC_IS_TRACKED(dict) && _PyObject_GC_MAY_BE_TRACKED(value)) {
+                _PyObject_GC_TRACK(dict);
+            }
+            /* PEP 509 */
+            dict->ma_version_tag = new_version;
+            Py_DECREF(owner);
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_LEN) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2888 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            /* len(o) */
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
-            }
-            DEOPT_IF(total_args != 1, CALL);
-            PyInterpreterState *interp = _PyInterpreterState_GET();
-            DEOPT_IF(callable != interp->callable_cache.len, CALL);
-            STAT_INC(CALL, hit);
-            PyObject *arg = args[0];
-            Py_ssize_t len_i = PyObject_Length(arg);
-            if (len_i < 0) {
-                goto error;
-            }
-            res = PyLong_FromSsize_t(len_i);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-
-            Py_DECREF(callable);
-            Py_DECREF(arg);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4057 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
+        TARGET(STORE_DEREF) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_DEREF);
+            PyObject *v;
+            v = stack_pointer[-1];
+            PyObject *cell = GETLOCAL(oparg);
+            PyObject *oldobj = PyCell_GET(cell);
+            PyCell_SET(cell, v);
+            Py_XDECREF(oldobj);
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_ISINSTANCE) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *callable = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2915 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            /* isinstance(o, o2) */
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                callable = method;
-                args--;
-                total_args++;
-            }
-            DEOPT_IF(total_args != 2, CALL);
-            PyInterpreterState *interp = _PyInterpreterState_GET();
-            DEOPT_IF(callable != interp->callable_cache.isinstance, CALL);
-            STAT_INC(CALL, hit);
-            PyObject *cls = args[1];
-            PyObject *inst = args[0];
-            int retval = PyObject_IsInstance(inst, cls);
-            if (retval < 0) {
-                goto error;
-            }
-            res = PyBool_FromLong(retval);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-
-            Py_DECREF(inst);
-            Py_DECREF(cls);
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4097 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
+        TARGET(STORE_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_FAST);
+            PyObject *value;
+            value = stack_pointer[-1];
+            SETLOCAL(oparg, value);
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_LIST_APPEND) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *self = stack_pointer[-(1 + oparg)];
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            #line 2945 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            assert(oparg == 1);
-            assert(method != NULL);
-            PyInterpreterState *interp = _PyInterpreterState_GET();
-            DEOPT_IF(method != interp->callable_cache.list_append, CALL);
-            DEOPT_IF(!PyList_Check(self), CALL);
-            STAT_INC(CALL, hit);
-            if (_PyList_AppendTakeRef((PyListObject *)self, args[0]) < 0) {
-                goto pop_1_error;  // Since arg is DECREF'ed already
-            }
-            Py_DECREF(self);
-            Py_DECREF(method);
-            STACK_SHRINK(3);
-            // CALL + POP_TOP
-            JUMPBY(INLINE_CACHE_ENTRIES_CALL + 1);
-            assert(next_instr[-1].op.code == POP_TOP);
+        TARGET(STORE_FAST_LOAD_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_FAST_LOAD_FAST);
+            PyObject *value1;
+            PyObject *value2;
+            value1 = stack_pointer[-1];
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            SETLOCAL(oparg1, value1);
+            value2 = GETLOCAL(oparg2);
+            Py_INCREF(value2);
+            stack_pointer[-1] = value2;
             DISPATCH();
-            #line 4127 "Python/generated_cases.c.h"
         }
 
-        TARGET(CALL_NO_KW_METHOD_DESCRIPTOR_O) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2965 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                args--;
-                total_args++;
-            }
-            PyMethodDescrObject *callable =
-                (PyMethodDescrObject *)PEEK(total_args + 1);
-            DEOPT_IF(total_args != 2, CALL);
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            DEOPT_IF(meth->ml_flags != METH_O, CALL);
-            PyObject *arg = args[1];
-            PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, callable->d_common.d_type), CALL);
-            STAT_INC(CALL, hit);
-            PyCFunction cfunc = meth->ml_meth;
-            // This is slower but CPython promises to check all non-vectorcall
-            // function calls.
-            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
-                goto error;
-            }
-            res = _PyCFunction_TrampolineCall(cfunc, self, arg);
-            _Py_LeaveRecursiveCallTstate(tstate);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            Py_DECREF(self);
-            Py_DECREF(arg);
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4165 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+        TARGET(STORE_FAST_STORE_FAST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_FAST_STORE_FAST);
+            PyObject *value1;
+            PyObject *value2;
+            value1 = stack_pointer[-1];
+            value2 = stack_pointer[-2];
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            SETLOCAL(oparg1, value1);
+            SETLOCAL(oparg2, value2);
+            stack_pointer += -2;
             DISPATCH();
         }
 
-        TARGET(CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 2999 "Python/bytecodes.c"
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                args--;
-                total_args++;
-            }
-            PyMethodDescrObject *callable =
-                (PyMethodDescrObject *)PEEK(total_args + 1);
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            DEOPT_IF(meth->ml_flags != (METH_FASTCALL|METH_KEYWORDS), CALL);
-            PyTypeObject *d_type = callable->d_common.d_type;
-            PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, d_type), CALL);
-            STAT_INC(CALL, hit);
-            int nargs = total_args - 1;
-            _PyCFunctionFastWithKeywords cfunc =
-                (_PyCFunctionFastWithKeywords)(void(*)(void))meth->ml_meth;
-            res = cfunc(self, args + 1, nargs - KWNAMES_LEN(), kwnames);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            kwnames = NULL;
+        TARGET(STORE_GLOBAL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_GLOBAL);
+            PyObject *v;
+            v = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            int err = PyDict_SetItem(GLOBALS(), name, v);
+            Py_DECREF(v);
+            if (err) goto pop_1_error;
+            stack_pointer += -1;
+            DISPATCH();
+        }
 
-            /* Free the arguments. */
-            for (int i = 0; i < total_args; i++) {
-                Py_DECREF(args[i]);
+        TARGET(STORE_NAME) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_NAME);
+            PyObject *v;
+            v = stack_pointer[-1];
+            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
+            PyObject *ns = LOCALS();
+            int err;
+            if (ns == NULL) {
+                _PyErr_Format(tstate, PyExc_SystemError,
+                              "no locals found when storing %R", name);
+                Py_DECREF(v);
+                if (true) goto pop_1_error;
             }
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4207 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            if (PyDict_CheckExact(ns))
+            err = PyDict_SetItem(ns, name, v);
+            else
+            err = PyObject_SetItem(ns, name, v);
+            Py_DECREF(v);
+            if (err) goto pop_1_error;
+            stack_pointer += -1;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 3031 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            assert(oparg == 0 || oparg == 1);
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                args--;
-                total_args++;
+        TARGET(STORE_SLICE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(STORE_SLICE);
+            PyObject *stop;
+            PyObject *start;
+            PyObject *container;
+            PyObject *v;
+            stop = stack_pointer[-1];
+            start = stack_pointer[-2];
+            container = stack_pointer[-3];
+            v = stack_pointer[-4];
+            PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
+            int err;
+            if (slice == NULL) {
+                err = 1;
             }
-            DEOPT_IF(total_args != 1, CALL);
-            PyMethodDescrObject *callable = (PyMethodDescrObject *)SECOND();
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, callable->d_common.d_type), CALL);
-            DEOPT_IF(meth->ml_flags != METH_NOARGS, CALL);
-            STAT_INC(CALL, hit);
-            PyCFunction cfunc = meth->ml_meth;
-            // This is slower but CPython promises to check all non-vectorcall
-            // function calls.
-            if (_Py_EnterRecursiveCallTstate(tstate, " while calling a Python object")) {
-                goto error;
+            else {
+                err = PyObject_SetItem(container, slice, v);
+                Py_DECREF(slice);
             }
-            res = _PyCFunction_TrampolineCall(cfunc, self, NULL);
-            _Py_LeaveRecursiveCallTstate(tstate);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            Py_DECREF(self);
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4249 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            Py_DECREF(v);
+            Py_DECREF(container);
+            if (err) goto pop_4_error;
+            stack_pointer += -4;
             DISPATCH();
         }
 
-        TARGET(CALL_NO_KW_METHOD_DESCRIPTOR_FAST) {
-            PyObject **args = (stack_pointer - oparg);
-            PyObject *method = stack_pointer[-(2 + oparg)];
-            PyObject *res;
-            #line 3063 "Python/bytecodes.c"
-            assert(kwnames == NULL);
-            int is_meth = method != NULL;
-            int total_args = oparg;
-            if (is_meth) {
-                args--;
-                total_args++;
+        TARGET(STORE_SUBSCR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(STORE_SUBSCR);
+            PREDICTED(STORE_SUBSCR);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *sub;
+            PyObject *container;
+            PyObject *v;
+            // _SPECIALIZE_STORE_SUBSCR
+            sub = stack_pointer[-1];
+            container = stack_pointer[-2];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_StoreSubscr(container, sub, next_instr);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(STORE_SUBSCR, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            PyMethodDescrObject *callable =
-                (PyMethodDescrObject *)PEEK(total_args + 1);
-            /* Builtin METH_FASTCALL methods, without keywords */
-            DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), CALL);
-            PyMethodDef *meth = callable->d_method;
-            DEOPT_IF(meth->ml_flags != METH_FASTCALL, CALL);
-            PyObject *self = args[0];
-            DEOPT_IF(!Py_IS_TYPE(self, callable->d_common.d_type), CALL);
-            STAT_INC(CALL, hit);
-            _PyCFunctionFast cfunc =
-                (_PyCFunctionFast)(void(*)(void))meth->ml_meth;
-            int nargs = total_args - 1;
-            res = cfunc(self, args + 1, nargs);
-            assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
-            /* Clear the stack of the arguments. */
-            for (int i = 0; i < total_args; i++) {
-                Py_DECREF(args[i]);
+            // _STORE_SUBSCR
+            v = stack_pointer[-3];
+            {
+                /* container[sub] = v */
+                int err = PyObject_SetItem(container, sub, v);
+                Py_DECREF(v);
+                Py_DECREF(container);
+                Py_DECREF(sub);
+                if (err) goto pop_3_error;
             }
-            Py_DECREF(callable);
-            if (res == NULL) { STACK_SHRINK(oparg); goto pop_2_error; }
-            #line 4290 "Python/generated_cases.c.h"
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            stack_pointer[-1] = res;
-            next_instr += 3;
-            CHECK_EVAL_BREAKER();
+            stack_pointer += -3;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_CALL_FUNCTION_EX) {
-            #line 3094 "Python/bytecodes.c"
-            GO_TO_INSTRUCTION(CALL_FUNCTION_EX);
-            #line 4302 "Python/generated_cases.c.h"
+        TARGET(STORE_SUBSCR_DICT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(STORE_SUBSCR_DICT);
+            static_assert(INLINE_CACHE_ENTRIES_STORE_SUBSCR == 1, "incorrect cache size");
+            PyObject *sub;
+            PyObject *dict;
+            PyObject *value;
+            sub = stack_pointer[-1];
+            dict = stack_pointer[-2];
+            value = stack_pointer[-3];
+            DEOPT_IF(!PyDict_CheckExact(dict), STORE_SUBSCR);
+            STAT_INC(STORE_SUBSCR, hit);
+            int err = _PyDict_SetItem_Take2((PyDictObject *)dict, sub, value);
+            Py_DECREF(dict);
+            if (err) goto pop_3_error;
+            stack_pointer += -3;
+            DISPATCH();
         }
 
-        TARGET(CALL_FUNCTION_EX) {
-            PREDICTED(CALL_FUNCTION_EX);
-            PyObject *kwargs = (oparg & 1) ? stack_pointer[-(((oparg & 1) ? 1 : 0))] : NULL;
-            PyObject *callargs = stack_pointer[-(1 + ((oparg & 1) ? 1 : 0))];
-            PyObject *func = stack_pointer[-(2 + ((oparg & 1) ? 1 : 0))];
-            PyObject *result;
-            #line 3098 "Python/bytecodes.c"
-            // DICT_MERGE is called before this opcode if there are kwargs.
-            // It converts all dict subtypes in kwargs into regular dicts.
-            assert(kwargs == NULL || PyDict_CheckExact(kwargs));
-            if (!PyTuple_CheckExact(callargs)) {
-                if (check_args_iterable(tstate, func, callargs) < 0) {
-                    goto error;
-                }
-                PyObject *tuple = PySequence_Tuple(callargs);
-                if (tuple == NULL) {
-                    goto error;
-                }
-                Py_SETREF(callargs, tuple);
-            }
-            assert(PyTuple_CheckExact(callargs));
-            EVAL_CALL_STAT_INC_IF_FUNCTION(EVAL_CALL_FUNCTION_EX, func);
-            if (opcode == INSTRUMENTED_CALL_FUNCTION_EX &&
-                !PyFunction_Check(func) && !PyMethod_Check(func)
-            ) {
-                PyObject *arg = PyTuple_GET_SIZE(callargs) > 0 ?
-                    PyTuple_GET_ITEM(callargs, 0) : Py_None;
-                int err = _Py_call_instrumentation_2args(
-                    tstate, PY_MONITORING_EVENT_CALL,
-                    frame, next_instr-1, func, arg);
-                if (err) goto error;
-                result = PyObject_Call(func, callargs, kwargs);
-                if (result == NULL) {
-                    _Py_call_instrumentation_exc2(
-                        tstate, PY_MONITORING_EVENT_C_RAISE,
-                        frame, next_instr-1, func, arg);
-                }
-                else {
-                    int err = _Py_call_instrumentation_2args(
-                        tstate, PY_MONITORING_EVENT_C_RETURN,
-                        frame, next_instr-1, func, arg);
-                    if (err < 0) {
-                        Py_CLEAR(result);
-                    }
-                }
-            }
-            else {
-                if (Py_TYPE(func) == &PyFunction_Type &&
-                    tstate->interp->eval_frame == NULL &&
-                    ((PyFunctionObject *)func)->vectorcall == _PyFunction_Vectorcall) {
-                    assert(PyTuple_CheckExact(callargs));
-                    Py_ssize_t nargs = PyTuple_GET_SIZE(callargs);
-                    int code_flags = ((PyCodeObject *)PyFunction_GET_CODE(func))->co_flags;
-                    PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(func));
-
-                    _PyInterpreterFrame *new_frame = _PyEvalFramePushAndInit_Ex(tstate,
-                                                                                (PyFunctionObject *)func, locals,
-                                                                                nargs, callargs, kwargs);
-                    // Need to manually shrink the stack since we exit with DISPATCH_INLINED.
-                    STACK_SHRINK(oparg + 3);
-                    if (new_frame == NULL) {
-                        goto error;
-                    }
-                    frame->return_offset = 0;
-                    DISPATCH_INLINED(new_frame);
-                }
-                result = PyObject_Call(func, callargs, kwargs);
-            }
-            #line 4373 "Python/generated_cases.c.h"
-            Py_DECREF(func);
-            Py_DECREF(callargs);
-            Py_XDECREF(kwargs);
-            #line 3160 "Python/bytecodes.c"
-            assert(PEEK(3 + (oparg & 1)) == NULL);
-            if (result == NULL) { STACK_SHRINK(((oparg & 1) ? 1 : 0)); goto pop_3_error; }
-            #line 4380 "Python/generated_cases.c.h"
-            STACK_SHRINK(((oparg & 1) ? 1 : 0));
-            STACK_SHRINK(2);
-            stack_pointer[-1] = result;
-            CHECK_EVAL_BREAKER();
+        TARGET(STORE_SUBSCR_LIST_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(STORE_SUBSCR_LIST_INT);
+            static_assert(INLINE_CACHE_ENTRIES_STORE_SUBSCR == 1, "incorrect cache size");
+            PyObject *sub;
+            PyObject *list;
+            PyObject *value;
+            sub = stack_pointer[-1];
+            list = stack_pointer[-2];
+            value = stack_pointer[-3];
+            DEOPT_IF(!PyLong_CheckExact(sub), STORE_SUBSCR);
+            DEOPT_IF(!PyList_CheckExact(list), STORE_SUBSCR);
+            // Ensure nonnegative, zero-or-one-digit ints.
+            DEOPT_IF(!_PyLong_IsNonNegativeCompact((PyLongObject *)sub), STORE_SUBSCR);
+            Py_ssize_t index = ((PyLongObject*)sub)->long_value.ob_digit[0];
+            // Ensure index < len(list)
+            DEOPT_IF(index >= PyList_GET_SIZE(list), STORE_SUBSCR);
+            STAT_INC(STORE_SUBSCR, hit);
+            PyObject *old_value = PyList_GET_ITEM(list, index);
+            PyList_SET_ITEM(list, index, value);
+            assert(old_value != NULL);
+            Py_DECREF(old_value);
+            _Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
+            Py_DECREF(list);
+            stack_pointer += -3;
             DISPATCH();
         }
 
-        TARGET(MAKE_FUNCTION) {
-            PyObject *codeobj = stack_pointer[-1];
-            PyObject *closure = (oparg & 0x08) ? stack_pointer[-(1 + ((oparg & 0x08) ? 1 : 0))] : NULL;
-            PyObject *annotations = (oparg & 0x04) ? stack_pointer[-(1 + ((oparg & 0x08) ? 1 : 0) + ((oparg & 0x04) ? 1 : 0))] : NULL;
-            PyObject *kwdefaults = (oparg & 0x02) ? stack_pointer[-(1 + ((oparg & 0x08) ? 1 : 0) + ((oparg & 0x04) ? 1 : 0) + ((oparg & 0x02) ? 1 : 0))] : NULL;
-            PyObject *defaults = (oparg & 0x01) ? stack_pointer[-(1 + ((oparg & 0x08) ? 1 : 0) + ((oparg & 0x04) ? 1 : 0) + ((oparg & 0x02) ? 1 : 0) + ((oparg & 0x01) ? 1 : 0))] : NULL;
-            PyObject *func;
-            #line 3170 "Python/bytecodes.c"
-
-            PyFunctionObject *func_obj = (PyFunctionObject *)
-                PyFunction_New(codeobj, GLOBALS());
-
-            Py_DECREF(codeobj);
-            if (func_obj == NULL) {
-                goto error;
-            }
+        TARGET(SWAP) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(SWAP);
+            PyObject *top;
+            PyObject *bottom;
+            top = stack_pointer[-1];
+            bottom = stack_pointer[-2 - (oparg-2)];
+            assert(oparg >= 2);
+            stack_pointer[-2 - (oparg-2)] = top;
+            stack_pointer[-1] = bottom;
+            DISPATCH();
+        }
 
-            if (oparg & 0x08) {
-                assert(PyTuple_CheckExact(closure));
-                func_obj->func_closure = closure;
-            }
-            if (oparg & 0x04) {
-                assert(PyTuple_CheckExact(annotations));
-                func_obj->func_annotations = annotations;
-            }
-            if (oparg & 0x02) {
-                assert(PyDict_CheckExact(kwdefaults));
-                func_obj->func_kwdefaults = kwdefaults;
+        TARGET(TO_BOOL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL);
+            PREDICTED(TO_BOOL);
+            _Py_CODEUNIT *this_instr = next_instr - 4;
+            PyObject *value;
+            PyObject *res;
+            // _SPECIALIZE_TO_BOOL
+            value = stack_pointer[-1];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_ToBool(value, next_instr);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(TO_BOOL, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
             }
-            if (oparg & 0x01) {
-                assert(PyTuple_CheckExact(defaults));
-                func_obj->func_defaults = defaults;
+            // _TO_BOOL
+            {
+                int err = PyObject_IsTrue(value);
+                Py_DECREF(value);
+                if (err < 0) goto pop_1_error;
+                res = err ? Py_True : Py_False;
             }
-
-            func_obj->func_version = ((PyCodeObject *)codeobj)->co_version;
-            func = (PyObject *)func_obj;
-            #line 4424 "Python/generated_cases.c.h"
-            STACK_SHRINK(((oparg & 0x01) ? 1 : 0) + ((oparg & 0x02) ? 1 : 0) + ((oparg & 0x04) ? 1 : 0) + ((oparg & 0x08) ? 1 : 0));
-            stack_pointer[-1] = func;
+            stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(RETURN_GENERATOR) {
-            #line 3201 "Python/bytecodes.c"
-            assert(PyFunction_Check(frame->f_funcobj));
-            PyFunctionObject *func = (PyFunctionObject *)frame->f_funcobj;
-            PyGenObject *gen = (PyGenObject *)_Py_MakeCoro(func);
-            if (gen == NULL) {
-                goto error;
-            }
-            assert(EMPTY());
-            _PyFrame_SetStackPointer(frame, stack_pointer);
-            _PyInterpreterFrame *gen_frame = (_PyInterpreterFrame *)gen->gi_iframe;
-            _PyFrame_Copy(frame, gen_frame);
-            assert(frame->frame_obj == NULL);
-            gen->gi_frame_state = FRAME_CREATED;
-            gen_frame->owner = FRAME_OWNED_BY_GENERATOR;
-            _Py_LeaveRecursiveCallPy(tstate);
-            assert(frame != &entry_frame);
-            _PyInterpreterFrame *prev = frame->previous;
-            _PyThreadState_PopFrame(tstate, frame);
-            frame = cframe.current_frame = prev;
-            _PyFrame_StackPush(frame, (PyObject *)gen);
-            goto resume_frame;
-            #line 4452 "Python/generated_cases.c.h"
+        TARGET(TO_BOOL_ALWAYS_TRUE) {
+            _Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL_ALWAYS_TRUE);
+            static_assert(INLINE_CACHE_ENTRIES_TO_BOOL == 3, "incorrect cache size");
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            uint32_t version = read_u32(&this_instr[2].cache);
+            // This one is a bit weird, because we expect *some* failures:
+            assert(version);
+            DEOPT_IF(Py_TYPE(value)->tp_version_tag != version, TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            Py_DECREF(value);
+            res = Py_True;
+            stack_pointer[-1] = res;
+            DISPATCH();
         }
 
-        TARGET(BUILD_SLICE) {
-            PyObject *step = (oparg == 3) ? stack_pointer[-(((oparg == 3) ? 1 : 0))] : NULL;
-            PyObject *stop = stack_pointer[-(1 + ((oparg == 3) ? 1 : 0))];
-            PyObject *start = stack_pointer[-(2 + ((oparg == 3) ? 1 : 0))];
-            PyObject *slice;
-            #line 3224 "Python/bytecodes.c"
-            slice = PySlice_New(start, stop, step);
-            #line 4462 "Python/generated_cases.c.h"
-            Py_DECREF(start);
-            Py_DECREF(stop);
-            Py_XDECREF(step);
-            #line 3226 "Python/bytecodes.c"
-            if (slice == NULL) { STACK_SHRINK(((oparg == 3) ? 1 : 0)); goto pop_2_error; }
-            #line 4468 "Python/generated_cases.c.h"
-            STACK_SHRINK(((oparg == 3) ? 1 : 0));
-            STACK_SHRINK(1);
-            stack_pointer[-1] = slice;
+        TARGET(TO_BOOL_BOOL) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL_BOOL);
+            static_assert(INLINE_CACHE_ENTRIES_TO_BOOL == 3, "incorrect cache size");
+            PyObject *value;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyBool_Check(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
             DISPATCH();
         }
 
-        TARGET(FORMAT_VALUE) {
-            PyObject *fmt_spec = ((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? stack_pointer[-((((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? 1 : 0))] : NULL;
-            PyObject *value = stack_pointer[-(1 + (((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? 1 : 0))];
-            PyObject *result;
-            #line 3230 "Python/bytecodes.c"
-            /* Handles f-string value formatting. */
-            PyObject *(*conv_fn)(PyObject *);
-            int which_conversion = oparg & FVC_MASK;
-
-            /* See if any conversion is specified. */
-            switch (which_conversion) {
-            case FVC_NONE:  conv_fn = NULL;           break;
-            case FVC_STR:   conv_fn = PyObject_Str;   break;
-            case FVC_REPR:  conv_fn = PyObject_Repr;  break;
-            case FVC_ASCII: conv_fn = PyObject_ASCII; break;
-            default:
-                _PyErr_Format(tstate, PyExc_SystemError,
-                              "unexpected conversion flag %d",
-                              which_conversion);
-                goto error;
+        TARGET(TO_BOOL_INT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL_INT);
+            static_assert(INLINE_CACHE_ENTRIES_TO_BOOL == 3, "incorrect cache size");
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyLong_CheckExact(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            if (_PyLong_IsZero((PyLongObject *)value)) {
+                assert(_Py_IsImmortal(value));
+                res = Py_False;
             }
-
-            /* If there's a conversion function, call it and replace
-               value with that result. Otherwise, just use value,
-               without conversion. */
-            if (conv_fn != NULL) {
-                result = conv_fn(value);
+            else {
                 Py_DECREF(value);
-                if (result == NULL) {
-                    Py_XDECREF(fmt_spec);
-                    if (true) { STACK_SHRINK((((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? 1 : 0)); goto pop_1_error; }
-                }
-                value = result;
+                res = Py_True;
             }
-
-            result = PyObject_Format(value, fmt_spec);
-            Py_DECREF(value);
-            Py_XDECREF(fmt_spec);
-            if (result == NULL) { STACK_SHRINK((((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? 1 : 0)); goto pop_1_error; }
-            #line 4514 "Python/generated_cases.c.h"
-            STACK_SHRINK((((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? 1 : 0));
-            stack_pointer[-1] = result;
-            DISPATCH();
-        }
-
-        TARGET(COPY) {
-            PyObject *bottom = stack_pointer[-(1 + (oparg-1))];
-            PyObject *top;
-            #line 3267 "Python/bytecodes.c"
-            assert(oparg > 0);
-            top = Py_NewRef(bottom);
-            #line 4526 "Python/generated_cases.c.h"
-            STACK_GROW(1);
-            stack_pointer[-1] = top;
+            stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(BINARY_OP) {
-            PREDICTED(BINARY_OP);
-            static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
-            PyObject *rhs = stack_pointer[-1];
-            PyObject *lhs = stack_pointer[-2];
+        TARGET(TO_BOOL_LIST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL_LIST);
+            static_assert(INLINE_CACHE_ENTRIES_TO_BOOL == 3, "incorrect cache size");
+            PyObject *value;
             PyObject *res;
-            #line 3272 "Python/bytecodes.c"
-            #if ENABLE_SPECIALIZATION
-            _PyBinaryOpCache *cache = (_PyBinaryOpCache *)next_instr;
-            if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
-                next_instr--;
-                _Py_Specialize_BinaryOp(lhs, rhs, next_instr, oparg, &GETLOCAL(0));
-                DISPATCH_SAME_OPARG();
-            }
-            STAT_INC(BINARY_OP, deferred);
-            DECREMENT_ADAPTIVE_COUNTER(cache->counter);
-            #endif  /* ENABLE_SPECIALIZATION */
-            assert(0 <= oparg);
-            assert((unsigned)oparg < Py_ARRAY_LENGTH(binary_ops));
-            assert(binary_ops[oparg]);
-            res = binary_ops[oparg](lhs, rhs);
-            #line 4553 "Python/generated_cases.c.h"
-            Py_DECREF(lhs);
-            Py_DECREF(rhs);
-            #line 3287 "Python/bytecodes.c"
-            if (res == NULL) goto pop_2_error;
-            #line 4558 "Python/generated_cases.c.h"
-            STACK_SHRINK(1);
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyList_CheckExact(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            res = Py_SIZE(value) ? Py_True : Py_False;
+            Py_DECREF(value);
             stack_pointer[-1] = res;
-            next_instr += 1;
             DISPATCH();
         }
 
-        TARGET(SWAP) {
-            PyObject *top = stack_pointer[-1];
-            PyObject *bottom = stack_pointer[-(2 + (oparg-2))];
-            #line 3292 "Python/bytecodes.c"
-            assert(oparg >= 2);
-            #line 4570 "Python/generated_cases.c.h"
-            stack_pointer[-1] = bottom;
-            stack_pointer[-(2 + (oparg-2))] = top;
+        TARGET(TO_BOOL_NONE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL_NONE);
+            static_assert(INLINE_CACHE_ENTRIES_TO_BOOL == 3, "incorrect cache size");
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            // This one is a bit weird, because we expect *some* failures:
+            DEOPT_IF(!Py_IsNone(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            res = Py_False;
+            stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_INSTRUCTION) {
-            #line 3296 "Python/bytecodes.c"
-            int next_opcode = _Py_call_instrumentation_instruction(
-                tstate, frame, next_instr-1);
-            if (next_opcode < 0) goto error;
-            next_instr--;
-            if (_PyOpcode_Caches[next_opcode]) {
-                _PyBinaryOpCache *cache = (_PyBinaryOpCache *)(next_instr+1);
-                INCREMENT_ADAPTIVE_COUNTER(cache->counter);
+        TARGET(TO_BOOL_STR) {
+            frame->instr_ptr = next_instr;
+            next_instr += 4;
+            INSTRUCTION_STATS(TO_BOOL_STR);
+            static_assert(INLINE_CACHE_ENTRIES_TO_BOOL == 3, "incorrect cache size");
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            DEOPT_IF(!PyUnicode_CheckExact(value), TO_BOOL);
+            STAT_INC(TO_BOOL, hit);
+            if (value == &_Py_STR(empty)) {
+                assert(_Py_IsImmortal(value));
+                res = Py_False;
             }
-            assert(next_opcode > 0 && next_opcode < 256);
-            opcode = next_opcode;
-            DISPATCH_GOTO();
-            #line 4589 "Python/generated_cases.c.h"
+            else {
+                assert(Py_SIZE(value));
+                Py_DECREF(value);
+                res = Py_True;
+            }
+            stack_pointer[-1] = res;
+            DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_JUMP_FORWARD) {
-            #line 3310 "Python/bytecodes.c"
-            INSTRUMENTED_JUMP(next_instr-1, next_instr+oparg, PY_MONITORING_EVENT_JUMP);
-            #line 4595 "Python/generated_cases.c.h"
+        TARGET(UNARY_INVERT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(UNARY_INVERT);
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            res = PyNumber_Invert(value);
+            Py_DECREF(value);
+            if (res == NULL) goto pop_1_error;
+            stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_JUMP_BACKWARD) {
-            #line 3314 "Python/bytecodes.c"
-            INSTRUMENTED_JUMP(next_instr-1, next_instr-oparg, PY_MONITORING_EVENT_JUMP);
-            #line 4602 "Python/generated_cases.c.h"
-            CHECK_EVAL_BREAKER();
+        TARGET(UNARY_NEGATIVE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(UNARY_NEGATIVE);
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            res = PyNumber_Negative(value);
+            Py_DECREF(value);
+            if (res == NULL) goto pop_1_error;
+            stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_POP_JUMP_IF_TRUE) {
-            #line 3319 "Python/bytecodes.c"
-            PyObject *cond = POP();
-            int err = PyObject_IsTrue(cond);
-            Py_DECREF(cond);
-            if (err < 0) goto error;
-            _Py_CODEUNIT *here = next_instr-1;
-            assert(err == 0 || err == 1);
-            int offset = err*oparg;
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
-            #line 4617 "Python/generated_cases.c.h"
+        TARGET(UNARY_NOT) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(UNARY_NOT);
+            PyObject *value;
+            PyObject *res;
+            value = stack_pointer[-1];
+            assert(PyBool_Check(value));
+            res = Py_IsFalse(value) ? Py_True : Py_False;
+            stack_pointer[-1] = res;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_POP_JUMP_IF_FALSE) {
-            #line 3330 "Python/bytecodes.c"
-            PyObject *cond = POP();
-            int err = PyObject_IsTrue(cond);
-            Py_DECREF(cond);
-            if (err < 0) goto error;
-            _Py_CODEUNIT *here = next_instr-1;
-            assert(err == 0 || err == 1);
-            int offset = (1-err)*oparg;
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
-            #line 4631 "Python/generated_cases.c.h"
+        TARGET(UNPACK_EX) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(UNPACK_EX);
+            PyObject *seq;
+            seq = stack_pointer[-1];
+            int totalargs = 1 + (oparg & 0xFF) + (oparg >> 8);
+            PyObject **top = stack_pointer + totalargs - 1;
+            int res = _PyEval_UnpackIterable(tstate, seq, oparg & 0xFF, oparg >> 8, top);
+            Py_DECREF(seq);
+            if (res == 0) goto pop_1_error;
+            stack_pointer += (oparg >> 8) + (oparg & 0xFF);
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_POP_JUMP_IF_NONE) {
-            #line 3341 "Python/bytecodes.c"
-            PyObject *value = POP();
-            _Py_CODEUNIT *here = next_instr-1;
-            int offset;
-            if (Py_IsNone(value)) {
-                _Py_DECREF_NO_DEALLOC(value);
-                offset = oparg;
+        TARGET(UNPACK_SEQUENCE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(UNPACK_SEQUENCE);
+            PREDICTED(UNPACK_SEQUENCE);
+            _Py_CODEUNIT *this_instr = next_instr - 2;
+            PyObject *seq;
+            // _SPECIALIZE_UNPACK_SEQUENCE
+            seq = stack_pointer[-1];
+            {
+                uint16_t counter = read_u16(&this_instr[1].cache);
+                TIER_ONE_ONLY
+                #if ENABLE_SPECIALIZATION
+                if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
+                    next_instr = this_instr;
+                    _Py_Specialize_UnpackSequence(seq, next_instr, oparg);
+                    DISPATCH_SAME_OPARG();
+                }
+                STAT_INC(UNPACK_SEQUENCE, deferred);
+                DECREMENT_ADAPTIVE_COUNTER(this_instr[1].cache);
+                #endif  /* ENABLE_SPECIALIZATION */
+                (void)seq;
+                (void)counter;
             }
-            else {
-                Py_DECREF(value);
-                offset = 0;
+            // _UNPACK_SEQUENCE
+            {
+                PyObject **top = stack_pointer + oparg - 1;
+                int res = _PyEval_UnpackIterable(tstate, seq, oparg, -1, top);
+                Py_DECREF(seq);
+                if (res == 0) goto pop_1_error;
             }
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
-            #line 4649 "Python/generated_cases.c.h"
+            stack_pointer += -1 + oparg;
             DISPATCH();
         }
 
-        TARGET(INSTRUMENTED_POP_JUMP_IF_NOT_NONE) {
-            #line 3356 "Python/bytecodes.c"
-            PyObject *value = POP();
-            _Py_CODEUNIT *here = next_instr-1;
-            int offset;
-            if (Py_IsNone(value)) {
-                _Py_DECREF_NO_DEALLOC(value);
-                offset = 0;
+        TARGET(UNPACK_SEQUENCE_LIST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(UNPACK_SEQUENCE_LIST);
+            static_assert(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE == 1, "incorrect cache size");
+            PyObject *seq;
+            PyObject **values;
+            seq = stack_pointer[-1];
+            values = &stack_pointer[-1];
+            DEOPT_IF(!PyList_CheckExact(seq), UNPACK_SEQUENCE);
+            DEOPT_IF(PyList_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
+            STAT_INC(UNPACK_SEQUENCE, hit);
+            PyObject **items = _PyList_ITEMS(seq);
+            for (int i = oparg; --i >= 0; ) {
+                *values++ = Py_NewRef(items[i]);
             }
-            else {
-                Py_DECREF(value);
-                 offset = oparg;
+            Py_DECREF(seq);
+            stack_pointer += -1 + oparg;
+            DISPATCH();
+        }
+
+        TARGET(UNPACK_SEQUENCE_TUPLE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(UNPACK_SEQUENCE_TUPLE);
+            static_assert(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE == 1, "incorrect cache size");
+            PyObject *seq;
+            PyObject **values;
+            seq = stack_pointer[-1];
+            values = &stack_pointer[-1];
+            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
+            DEOPT_IF(PyTuple_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
+            STAT_INC(UNPACK_SEQUENCE, hit);
+            PyObject **items = _PyTuple_ITEMS(seq);
+            for (int i = oparg; --i >= 0; ) {
+                *values++ = Py_NewRef(items[i]);
             }
-            INSTRUMENTED_JUMP(here, next_instr + offset, PY_MONITORING_EVENT_BRANCH);
-            #line 4667 "Python/generated_cases.c.h"
+            Py_DECREF(seq);
+            stack_pointer += -1 + oparg;
             DISPATCH();
         }
 
-        TARGET(EXTENDED_ARG) {
-            #line 3371 "Python/bytecodes.c"
-            assert(oparg);
-            opcode = next_instr->op.code;
-            oparg = oparg << 8 | next_instr->op.arg;
-            PRE_DISPATCH_GOTO();
-            DISPATCH_GOTO();
-            #line 4678 "Python/generated_cases.c.h"
+        TARGET(UNPACK_SEQUENCE_TWO_TUPLE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 2;
+            INSTRUCTION_STATS(UNPACK_SEQUENCE_TWO_TUPLE);
+            static_assert(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE == 1, "incorrect cache size");
+            PyObject *seq;
+            PyObject **values;
+            seq = stack_pointer[-1];
+            values = &stack_pointer[-1];
+            DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
+            DEOPT_IF(PyTuple_GET_SIZE(seq) != 2, UNPACK_SEQUENCE);
+            assert(oparg == 2);
+            STAT_INC(UNPACK_SEQUENCE, hit);
+            values[0] = Py_NewRef(PyTuple_GET_ITEM(seq, 1));
+            values[1] = Py_NewRef(PyTuple_GET_ITEM(seq, 0));
+            Py_DECREF(seq);
+            stack_pointer += -1 + oparg;
+            DISPATCH();
         }
 
-        TARGET(CACHE) {
-            #line 3379 "Python/bytecodes.c"
-            assert(0 && "Executing a cache.");
-            Py_UNREACHABLE();
-            #line 4685 "Python/generated_cases.c.h"
+        TARGET(WITH_EXCEPT_START) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(WITH_EXCEPT_START);
+            PyObject *val;
+            PyObject *lasti;
+            PyObject *exit_func;
+            PyObject *res;
+            val = stack_pointer[-1];
+            lasti = stack_pointer[-3];
+            exit_func = stack_pointer[-4];
+            /* At the top of the stack are 4 values:
+               - val: TOP = exc_info()
+               - unused: SECOND = previous exception
+               - lasti: THIRD = lasti of exception in exc_info()
+               - exit_func: FOURTH = the context.__exit__ bound method
+               We call FOURTH(type(TOP), TOP, GetTraceback(TOP)).
+               Then we push the __exit__ return value.
+             */
+            PyObject *exc, *tb;
+            assert(val && PyExceptionInstance_Check(val));
+            exc = PyExceptionInstance_Class(val);
+            tb = PyException_GetTraceback(val);
+            if (tb == NULL) {
+                tb = Py_None;
+            }
+            else {
+                Py_DECREF(tb);
+            }
+            assert(PyLong_Check(lasti));
+            (void)lasti; // Shut up compiler warning if asserts are off
+            PyObject *stack[4] = {NULL, exc, val, tb};
+            res = PyObject_Vectorcall(exit_func, stack + 1,
+                                      3 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+            if (res == NULL) goto error;
+            stack_pointer[0] = res;
+            stack_pointer += 1;
+            DISPATCH();
         }
 
-        TARGET(RESERVED) {
-            #line 3384 "Python/bytecodes.c"
-            assert(0 && "Executing RESERVED instruction.");
-            Py_UNREACHABLE();
-            #line 4692 "Python/generated_cases.c.h"
+        TARGET(YIELD_VALUE) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(YIELD_VALUE);
+            PyObject *retval;
+            retval = stack_pointer[-1];
+            // NOTE: It's important that YIELD_VALUE never raises an exception!
+            // The compiler treats any exception raised here as a failed close()
+            // or throw() call.
+            assert(frame != &entry_frame);
+            frame->instr_ptr = next_instr;
+            PyGenObject *gen = _PyFrame_GetGenerator(frame);
+            assert(FRAME_SUSPENDED_YIELD_FROM == FRAME_SUSPENDED + 1);
+            assert(oparg == 0 || oparg == 1);
+            gen->gi_frame_state = FRAME_SUSPENDED + oparg;
+            _PyFrame_SetStackPointer(frame, stack_pointer - 1);
+            tstate->exc_info = gen->gi_exc_state.previous_item;
+            gen->gi_exc_state.previous_item = NULL;
+            _Py_LeaveRecursiveCallPy(tstate);
+            _PyInterpreterFrame *gen_frame = frame;
+            frame = tstate->current_frame = frame->previous;
+            gen_frame->previous = NULL;
+            _PyFrame_StackPush(frame, retval);
+            /* We don't know which of these is relevant here, so keep them equal */
+            assert(INLINE_CACHE_ENTRIES_SEND == INLINE_CACHE_ENTRIES_FOR_ITER);
+            LOAD_IP(1 + INLINE_CACHE_ENTRIES_SEND);
+            goto resume_frame;
         }
+#undef TIER_ONE
diff --git a/Python/getargs.c b/Python/getargs.c
index 66dd90877fe6ff..0c4ce282f48764 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1,55 +1,24 @@
 
 /* New getargs implementation */
 
+#define PY_CXX_CONST const
 #include "Python.h"
-#include "pycore_tuple.h"         // _PyTuple_ITEMS()
+#include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_dict.h"          // _PyDict_HasOnlyStringKeys()
+#include "pycore_modsupport.h"    // export _PyArg_NoKeywords()
 #include "pycore_pylifecycle.h"   // _PyArg_Fini
+#include "pycore_tuple.h"         // _PyTuple_ITEMS()
 
-#include <ctype.h>
-#include <float.h>
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-int PyArg_Parse(PyObject *, const char *, ...);
-int PyArg_ParseTuple(PyObject *, const char *, ...);
-int PyArg_VaParse(PyObject *, const char *, va_list);
-
-int PyArg_ParseTupleAndKeywords(PyObject *, PyObject *,
-                                const char *, char **, ...);
-int PyArg_VaParseTupleAndKeywords(PyObject *, PyObject *,
-                                const char *, char **, va_list);
-
-int _PyArg_ParseTupleAndKeywordsFast(PyObject *, PyObject *,
-                                            struct _PyArg_Parser *, ...);
-int _PyArg_VaParseTupleAndKeywordsFast(PyObject *, PyObject *,
-                                            struct _PyArg_Parser *, va_list);
-
-#ifdef HAVE_DECLSPEC_DLL
-/* Export functions */
+/* Export Stable ABIs (abi only) */
 PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *, const char *, ...);
-PyAPI_FUNC(int) _PyArg_ParseStack_SizeT(PyObject *const *args, Py_ssize_t nargs,
-                                        const char *format, ...);
-PyAPI_FUNC(int) _PyArg_ParseStackAndKeywords_SizeT(PyObject *const *args, Py_ssize_t nargs,
-                                        PyObject *kwnames,
-                                        struct _PyArg_Parser *parser, ...);
 PyAPI_FUNC(int) _PyArg_ParseTuple_SizeT(PyObject *, const char *, ...);
 PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
-                                                  const char *, char **, ...);
-PyAPI_FUNC(PyObject *) _Py_BuildValue_SizeT(const char *, ...);
+                                                  const char *, const char * const *, ...);
 PyAPI_FUNC(int) _PyArg_VaParse_SizeT(PyObject *, const char *, va_list);
 PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
-                                              const char *, char **, va_list);
-
-PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywordsFast_SizeT(PyObject *, PyObject *,
-                                            struct _PyArg_Parser *, ...);
-PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywordsFast_SizeT(PyObject *, PyObject *,
-                                            struct _PyArg_Parser *, va_list);
-#endif
+                                              const char *, const char * const *, va_list);
 
 #define FLAG_COMPAT 1
-#define FLAG_SIZE_T 2
 
 typedef int (*destr_t)(PyObject *, void *);
 
@@ -79,14 +48,14 @@ static void seterror(Py_ssize_t, const char *, int *, const char *, const char *
 static const char *convertitem(PyObject *, const char **, va_list *, int, int *,
                                char *, size_t, freelist_t *);
 static const char *converttuple(PyObject *, const char **, va_list *, int,
-                                int *, char *, size_t, int, freelist_t *);
+                                int *, char *, size_t, freelist_t *);
 static const char *convertsimple(PyObject *, const char **, va_list *, int,
                                  char *, size_t, freelist_t *);
 static Py_ssize_t convertbuffer(PyObject *, const void **p, const char **);
 static int getbuffer(PyObject *, Py_buffer *, const char**);
 
 static int vgetargskeywords(PyObject *, PyObject *,
-                            const char *, char **, va_list *, int);
+                            const char *, const char * const *, va_list *, int);
 static int vgetargskeywordsfast(PyObject *, PyObject *,
                             struct _PyArg_Parser *, va_list *, int);
 static int vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
@@ -114,7 +83,7 @@ _PyArg_Parse_SizeT(PyObject *args, const char *format, ...)
     va_list va;
 
     va_start(va, format);
-    retval = vgetargs1(args, format, &va, FLAG_COMPAT|FLAG_SIZE_T);
+    retval = vgetargs1(args, format, &va, FLAG_COMPAT);
     va_end(va);
     return retval;
 }
@@ -132,14 +101,14 @@ PyArg_ParseTuple(PyObject *args, const char *format, ...)
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_ParseTuple_SizeT(PyObject *args, const char *format, ...)
 {
     int retval;
     va_list va;
 
     va_start(va, format);
-    retval = vgetargs1(args, format, &va, FLAG_SIZE_T);
+    retval = vgetargs1(args, format, &va, 0);
     va_end(va);
     return retval;
 }
@@ -157,19 +126,6 @@ _PyArg_ParseStack(PyObject *const *args, Py_ssize_t nargs, const char *format, .
     return retval;
 }
 
-PyAPI_FUNC(int)
-_PyArg_ParseStack_SizeT(PyObject *const *args, Py_ssize_t nargs, const char *format, ...)
-{
-    int retval;
-    va_list va;
-
-    va_start(va, format);
-    retval = vgetargs1_impl(NULL, args, nargs, format, &va, FLAG_SIZE_T);
-    va_end(va);
-    return retval;
-}
-
-
 int
 PyArg_VaParse(PyObject *args, const char *format, va_list va)
 {
@@ -183,7 +139,7 @@ PyArg_VaParse(PyObject *args, const char *format, va_list va)
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_VaParse_SizeT(PyObject *args, const char *format, va_list va)
 {
     va_list lva;
@@ -191,7 +147,7 @@ _PyArg_VaParse_SizeT(PyObject *args, const char *format, va_list va)
 
     va_copy(lva, va);
 
-    retval = vgetargs1(args, format, &lva, FLAG_SIZE_T);
+    retval = vgetargs1(args, format, &lva, 0);
     va_end(lva);
     return retval;
 }
@@ -499,7 +455,7 @@ seterror(Py_ssize_t iarg, const char *msg, int *levels, const char *fname,
 
 static const char *
 converttuple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
-             int *levels, char *msgbuf, size_t bufsize, int toplevel,
+             int *levels, char *msgbuf, size_t bufsize,
              freelist_t *freelist)
 {
     int level = 0;
@@ -522,14 +478,13 @@ converttuple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
         }
         else if (c == ':' || c == ';' || c == '\0')
             break;
-        else if (level == 0 && Py_ISALPHA(c))
+        else if (level == 0 && Py_ISALPHA(c) && c != 'e')
             n++;
     }
 
     if (!PySequence_Check(arg) || PyBytes_Check(arg)) {
         levels[0] = 0;
         PyOS_snprintf(msgbuf, bufsize,
-                      toplevel ? "expected %d arguments, not %.50s" :
                       "must be %d-item sequence, not %.50s",
                   n,
                   arg == Py_None ? "None" : Py_TYPE(arg)->tp_name);
@@ -539,18 +494,9 @@ converttuple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
     len = PySequence_Size(arg);
     if (len != n) {
         levels[0] = 0;
-        if (toplevel) {
-            PyOS_snprintf(msgbuf, bufsize,
-                          "expected %d argument%s, not %zd",
-                          n,
-                          n == 1 ? "" : "s",
-                          len);
-        }
-        else {
-            PyOS_snprintf(msgbuf, bufsize,
-                          "must be sequence of length %d, not %zd",
-                          n, len);
-        }
+        PyOS_snprintf(msgbuf, bufsize,
+                      "must be sequence of length %d, not %zd",
+                      n, len);
         return msgbuf;
     }
 
@@ -593,7 +539,7 @@ convertitem(PyObject *arg, const char **p_format, va_list *p_va, int flags,
     if (*format == '(' /* ')' */) {
         format++;
         msg = converttuple(arg, &format, p_va, flags, levels, msgbuf,
-                           bufsize, 0, freelist);
+                           bufsize, freelist);
         if (msg == NULL)
             format++;
     }
@@ -657,13 +603,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
               char *msgbuf, size_t bufsize, freelist_t *freelist)
 {
 #define RETURN_ERR_OCCURRED return msgbuf
-    /* For # codes */
-#define REQUIRE_PY_SSIZE_T_CLEAN \
-    if (!(flags & FLAG_SIZE_T)) { \
-        PyErr_SetString(PyExc_SystemError, \
-                        "PY_SSIZE_T_CLEAN macro must be defined for '#' formats"); \
-        RETURN_ERR_OCCURRED; \
-    }
 
     const char *format = *p_format;
     char c = *format++;
@@ -871,9 +810,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
         if (!PyUnicode_Check(arg))
             return converterr("a unicode character", arg, msgbuf, bufsize);
 
-        if (PyUnicode_READY(arg))
-            RETURN_ERR_OCCURRED;
-
         if (PyUnicode_GET_LENGTH(arg) != 1)
             return converterr("a unicode character", arg, msgbuf, bufsize);
 
@@ -917,7 +853,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
         if (count < 0)
             return converterr(buf, arg, msgbuf, bufsize);
         if (*format == '#') {
-            REQUIRE_PY_SSIZE_T_CLEAN;
             Py_ssize_t *psize = va_arg(*p_va, Py_ssize_t*);
             *psize = count;
             format++;
@@ -961,7 +896,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
         } else if (*format == '#') { /* a string or read-only bytes-like object */
             /* "s#" or "z#" */
             const void **p = (const void **)va_arg(*p_va, const char **);
-            REQUIRE_PY_SSIZE_T_CLEAN;
             Py_ssize_t *psize = va_arg(*p_va, Py_ssize_t*);
 
             if (c == 'z' && arg == Py_None) {
@@ -1099,7 +1033,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
                trailing 0-byte
 
             */
-            REQUIRE_PY_SSIZE_T_CLEAN;
             Py_ssize_t *psize = va_arg(*p_va, Py_ssize_t*);
 
             format++;
@@ -1194,8 +1127,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
     case 'U': { /* PyUnicode object */
         PyObject **p = va_arg(*p_va, PyObject **);
         if (PyUnicode_Check(arg)) {
-            if (PyUnicode_READY(arg) == -1)
-                RETURN_ERR_OCCURRED;
             *p = arg;
         }
         else
@@ -1247,17 +1178,15 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
                 arg, msgbuf, bufsize);
         format++;
 
-        /* Caller is interested in Py_buffer, and the object
-           supports it directly. */
+        /* Caller is interested in Py_buffer, and the object supports it
+           directly. The request implicitly asks for PyBUF_SIMPLE, so the
+           result is C-contiguous with format 'B'. */
         if (PyObject_GetBuffer(arg, (Py_buffer*)p, PyBUF_WRITABLE) < 0) {
             PyErr_Clear();
             return converterr("read-write bytes-like object",
                               arg, msgbuf, bufsize);
         }
-        if (!PyBuffer_IsContiguous((Py_buffer*)p, 'C')) {
-            PyBuffer_Release((Py_buffer*)p);
-            return converterr("contiguous buffer", arg, msgbuf, bufsize);
-        }
+        assert(PyBuffer_IsContiguous((Py_buffer *)p, 'C'));
         if (addcleanup(p, freelist, cleanup_buffer)) {
             return converterr(
                 "(cleanup problem)",
@@ -1274,7 +1203,6 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
     *p_format = format;
     return NULL;
 
-#undef REQUIRE_PY_SSIZE_T_CLEAN
 #undef RETURN_ERR_OCCURRED
 }
 
@@ -1303,15 +1231,12 @@ convertbuffer(PyObject *arg, const void **p, const char **errmsg)
 static int
 getbuffer(PyObject *arg, Py_buffer *view, const char **errmsg)
 {
+    /* PyBUF_SIMPLE implies C-contiguous */
     if (PyObject_GetBuffer(arg, view, PyBUF_SIMPLE) != 0) {
         *errmsg = "bytes-like object";
         return -1;
     }
-    if (!PyBuffer_IsContiguous(view, 'C')) {
-        PyBuffer_Release(view);
-        *errmsg = "contiguous buffer";
-        return -1;
-    }
+    assert(PyBuffer_IsContiguous(view, 'C'));
     return 0;
 }
 
@@ -1323,7 +1248,7 @@ int
 PyArg_ParseTupleAndKeywords(PyObject *args,
                             PyObject *keywords,
                             const char *format,
-                            char **kwlist, ...)
+                            const char * const *kwlist, ...)
 {
     int retval;
     va_list va;
@@ -1343,11 +1268,11 @@ PyArg_ParseTupleAndKeywords(PyObject *args,
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_ParseTupleAndKeywords_SizeT(PyObject *args,
                                   PyObject *keywords,
                                   const char *format,
-                                  char **kwlist, ...)
+                                  const char * const *kwlist, ...)
 {
     int retval;
     va_list va;
@@ -1363,7 +1288,7 @@ _PyArg_ParseTupleAndKeywords_SizeT(PyObject *args,
 
     va_start(va, kwlist);
     retval = vgetargskeywords(args, keywords, format,
-                              kwlist, &va, FLAG_SIZE_T);
+                              kwlist, &va, 0);
     va_end(va);
     return retval;
 }
@@ -1373,7 +1298,7 @@ int
 PyArg_VaParseTupleAndKeywords(PyObject *args,
                               PyObject *keywords,
                               const char *format,
-                              char **kwlist, va_list va)
+                              const char * const *kwlist, va_list va)
 {
     int retval;
     va_list lva;
@@ -1394,11 +1319,11 @@ PyArg_VaParseTupleAndKeywords(PyObject *args,
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *args,
                                     PyObject *keywords,
                                     const char *format,
-                                    char **kwlist, va_list va)
+                                    const char * const *kwlist, va_list va)
 {
     int retval;
     va_list lva;
@@ -1415,7 +1340,7 @@ _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *args,
     va_copy(lva, va);
 
     retval = vgetargskeywords(args, keywords, format,
-                              kwlist, &lva, FLAG_SIZE_T);
+                              kwlist, &lva, 0);
     va_end(lva);
     return retval;
 }
@@ -1433,7 +1358,7 @@ _PyArg_ParseTupleAndKeywordsFast(PyObject *args, PyObject *keywords,
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_ParseTupleAndKeywordsFast_SizeT(PyObject *args, PyObject *keywords,
                             struct _PyArg_Parser *parser, ...)
 {
@@ -1441,12 +1366,12 @@ _PyArg_ParseTupleAndKeywordsFast_SizeT(PyObject *args, PyObject *keywords,
     va_list va;
 
     va_start(va, parser);
-    retval = vgetargskeywordsfast(args, keywords, parser, &va, FLAG_SIZE_T);
+    retval = vgetargskeywordsfast(args, keywords, parser, &va, 0);
     va_end(va);
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_ParseStackAndKeywords(PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames,
                   struct _PyArg_Parser *parser, ...)
 {
@@ -1459,7 +1384,7 @@ _PyArg_ParseStackAndKeywords(PyObject *const *args, Py_ssize_t nargs, PyObject *
     return retval;
 }
 
-PyAPI_FUNC(int)
+int
 _PyArg_ParseStackAndKeywords_SizeT(PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames,
                         struct _PyArg_Parser *parser, ...)
 {
@@ -1467,40 +1392,12 @@ _PyArg_ParseStackAndKeywords_SizeT(PyObject *const *args, Py_ssize_t nargs, PyOb
     va_list va;
 
     va_start(va, parser);
-    retval = vgetargskeywordsfast_impl(args, nargs, NULL, kwnames, parser, &va, FLAG_SIZE_T);
+    retval = vgetargskeywordsfast_impl(args, nargs, NULL, kwnames, parser, &va, 0);
     va_end(va);
     return retval;
 }
 
 
-PyAPI_FUNC(int)
-_PyArg_VaParseTupleAndKeywordsFast(PyObject *args, PyObject *keywords,
-                            struct _PyArg_Parser *parser, va_list va)
-{
-    int retval;
-    va_list lva;
-
-    va_copy(lva, va);
-
-    retval = vgetargskeywordsfast(args, keywords, parser, &lva, 0);
-    va_end(lva);
-    return retval;
-}
-
-PyAPI_FUNC(int)
-_PyArg_VaParseTupleAndKeywordsFast_SizeT(PyObject *args, PyObject *keywords,
-                            struct _PyArg_Parser *parser, va_list va)
-{
-    int retval;
-    va_list lva;
-
-    va_copy(lva, va);
-
-    retval = vgetargskeywordsfast(args, keywords, parser, &lva, FLAG_SIZE_T);
-    va_end(lva);
-    return retval;
-}
-
 static void
 error_unexpected_keyword_arg(PyObject *kwargs, PyObject *kwnames, PyObject *kwtuple, const char *fname)
 {
@@ -1564,7 +1461,7 @@ PyArg_ValidateKeywordArguments(PyObject *kwargs)
 
 static int
 vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
-                 char **kwlist, va_list *p_va, int flags)
+                 const char * const *kwlist, va_list *p_va, int flags)
 {
     char msgbuf[512];
     int levels[32];
@@ -1574,7 +1471,6 @@ vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
     int i, pos, len;
     int skip = 0;
     Py_ssize_t nargs, nkwargs;
-    PyObject *current_arg;
     freelistentry_t static_entries[STATIC_FREELIST_ENTRIES];
     freelist_t freelist;
 
@@ -1704,17 +1600,17 @@ vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
             return cleanreturn(0, &freelist);
         }
         if (!skip) {
+            PyObject *current_arg;
             if (i < nargs) {
-                current_arg = PyTuple_GET_ITEM(args, i);
+                current_arg = Py_NewRef(PyTuple_GET_ITEM(args, i));
             }
             else if (nkwargs && i >= pos) {
-                current_arg = _PyDict_GetItemStringWithError(kwargs, kwlist[i]);
+                if (PyDict_GetItemStringRef(kwargs, kwlist[i], &current_arg) < 0) {
+                    return cleanreturn(0, &freelist);
+                }
                 if (current_arg) {
                     --nkwargs;
                 }
-                else if (PyErr_Occurred()) {
-                    return cleanreturn(0, &freelist);
-                }
             }
             else {
                 current_arg = NULL;
@@ -1723,6 +1619,7 @@ vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
             if (current_arg) {
                 msg = convertitem(current_arg, &format, p_va, flags,
                     levels, msgbuf, sizeof(msgbuf), &freelist);
+                Py_DECREF(current_arg);
                 if (msg) {
                     seterror(i+1, msg, levels, fname, custom_msg);
                     return cleanreturn(0, &freelist);
@@ -1793,8 +1690,12 @@ vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
         Py_ssize_t j;
         /* make sure there are no arguments given by name and position */
         for (i = pos; i < nargs; i++) {
-            current_arg = _PyDict_GetItemStringWithError(kwargs, kwlist[i]);
+            PyObject *current_arg;
+            if (PyDict_GetItemStringRef(kwargs, kwlist[i], &current_arg) < 0) {
+                return cleanreturn(0, &freelist);
+            }
             if (current_arg) {
+                Py_DECREF(current_arg);
                 /* arg present in tuple and in dict */
                 PyErr_Format(PyExc_TypeError,
                              "argument for %.200s%s given by name ('%s') "
@@ -1804,9 +1705,6 @@ vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
                              kwlist[i], i+1);
                 return cleanreturn(0, &freelist);
             }
-            else if (PyErr_Occurred()) {
-                return cleanreturn(0, &freelist);
-            }
         }
         /* make sure there are no extraneous keyword arguments */
         j = 0;
@@ -1818,7 +1716,7 @@ vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format,
                 return cleanreturn(0, &freelist);
             }
             for (i = pos; i < len; i++) {
-                if (_PyUnicode_EqualToASCIIString(key, kwlist[i])) {
+                if (PyUnicode_EqualToUTF8(key, kwlist[i])) {
                     match = 1;
                     break;
                 }
@@ -1970,8 +1868,9 @@ new_kwtuple(const char * const *keywords, int total, int pos)
 }
 
 static int
-_parser_init(struct _PyArg_Parser *parser)
+_parser_init(void *arg)
 {
+    struct _PyArg_Parser *parser = (struct _PyArg_Parser *)arg;
     const char * const *keywords = parser->keywords;
     assert(keywords != NULL);
     assert(parser->pos == 0 &&
@@ -1982,7 +1881,7 @@ _parser_init(struct _PyArg_Parser *parser)
 
     int len, pos;
     if (scan_keywords(keywords, &len, &pos) < 0) {
-        return 0;
+        return -1;
     }
 
     const char *fname, *custommsg = NULL;
@@ -1991,7 +1890,7 @@ _parser_init(struct _PyArg_Parser *parser)
         assert(parser->fname == NULL);
         if (parse_format(parser->format, len, pos,
                          &fname, &custommsg, &min, &max) < 0) {
-            return 0;
+            return -1;
         }
     }
     else {
@@ -2004,7 +1903,7 @@ _parser_init(struct _PyArg_Parser *parser)
     if (kwtuple == NULL) {
         kwtuple = new_kwtuple(keywords, len, pos);
         if (kwtuple == NULL) {
-            return 0;
+            return -1;
         }
         owned = 1;
     }
@@ -2018,40 +1917,27 @@ _parser_init(struct _PyArg_Parser *parser)
     parser->min = min;
     parser->max = max;
     parser->kwtuple = kwtuple;
-    parser->initialized = owned ? 1 : -1;
+    parser->is_kwtuple_owned = owned;
 
     assert(parser->next == NULL);
-    parser->next = _PyRuntime.getargs.static_parsers;
-    _PyRuntime.getargs.static_parsers = parser;
-    return 1;
+    parser->next = _Py_atomic_load_ptr(&_PyRuntime.getargs.static_parsers);
+    do {
+        // compare-exchange updates parser->next on failure
+    } while (_Py_atomic_compare_exchange_ptr(&_PyRuntime.getargs.static_parsers,
+                                             &parser->next, parser));
+    return 0;
 }
 
 static int
 parser_init(struct _PyArg_Parser *parser)
 {
-    // volatile as it can be modified by other threads
-    // and should not be optimized or reordered by compiler
-    if (*((volatile int *)&parser->initialized)) {
-        assert(parser->kwtuple != NULL);
-        return 1;
-    }
-    PyThread_acquire_lock(_PyRuntime.getargs.mutex, WAIT_LOCK);
-    // Check again if another thread initialized the parser
-    // while we were waiting for the lock.
-    if (*((volatile int *)&parser->initialized)) {
-        assert(parser->kwtuple != NULL);
-        PyThread_release_lock(_PyRuntime.getargs.mutex);
-        return 1;
-    }
-    int ret = _parser_init(parser);
-    PyThread_release_lock(_PyRuntime.getargs.mutex);
-    return ret;
+    return _PyOnceFlag_CallOnce(&parser->once, &_parser_init, parser);
 }
 
 static void
 parser_clear(struct _PyArg_Parser *parser)
 {
-    if (parser->initialized == 1) {
+    if (parser->is_kwtuple_owned) {
         Py_CLEAR(parser->kwtuple);
     }
 }
@@ -2068,7 +1954,7 @@ find_keyword(PyObject *kwnames, PyObject *const *kwstack, PyObject *key)
         /* kwname == key will normally find a match in since keyword keys
            should be interned strings; if not retry below in a new loop. */
         if (kwname == key) {
-            return kwstack[i];
+            return Py_NewRef(kwstack[i]);
         }
     }
 
@@ -2076,7 +1962,7 @@ find_keyword(PyObject *kwnames, PyObject *const *kwstack, PyObject *key)
         PyObject *kwname = PyTuple_GET_ITEM(kwnames, i);
         assert(PyUnicode_Check(kwname));
         if (_PyUnicode_EQ(kwname, key)) {
-            return kwstack[i];
+            return Py_NewRef(kwstack[i]);
         }
     }
     return NULL;
@@ -2096,7 +1982,6 @@ vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
     PyObject *keyword;
     int i, pos, len;
     Py_ssize_t nkwargs;
-    PyObject *current_arg;
     freelistentry_t static_entries[STATIC_FREELIST_ENTRIES];
     freelist_t freelist;
     PyObject *const *kwstack = NULL;
@@ -2119,7 +2004,7 @@ vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
         return 0;
     }
 
-    if (!parser_init(parser)) {
+    if (parser_init(parser) < 0) {
         return 0;
     }
 
@@ -2191,14 +2076,14 @@ vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
         }
         assert(!IS_END_OF_FORMAT(*format));
 
+        PyObject *current_arg;
         if (i < nargs) {
-            current_arg = args[i];
+            current_arg = Py_NewRef(args[i]);
         }
         else if (nkwargs && i >= pos) {
             keyword = PyTuple_GET_ITEM(kwtuple, i - pos);
             if (kwargs != NULL) {
-                current_arg = PyDict_GetItemWithError(kwargs, keyword);
-                if (!current_arg && PyErr_Occurred()) {
+                if (PyDict_GetItemRef(kwargs, keyword, &current_arg) < 0) {
                     return cleanreturn(0, &freelist);
                 }
             }
@@ -2216,6 +2101,7 @@ vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
         if (current_arg) {
             msg = convertitem(current_arg, &format, p_va, flags,
                 levels, msgbuf, sizeof(msgbuf), &freelist);
+            Py_DECREF(current_arg);
             if (msg) {
                 seterror(i+1, msg, levels, parser->fname, parser->custom_msg);
                 return cleanreturn(0, &freelist);
@@ -2266,10 +2152,10 @@ vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
     if (nkwargs > 0) {
         /* make sure there are no arguments given by name and position */
         for (i = pos; i < nargs; i++) {
+            PyObject *current_arg;
             keyword = PyTuple_GET_ITEM(kwtuple, i - pos);
             if (kwargs != NULL) {
-                current_arg = PyDict_GetItemWithError(kwargs, keyword);
-                if (!current_arg && PyErr_Occurred()) {
+                if (PyDict_GetItemRef(kwargs, keyword, &current_arg) < 0) {
                     return cleanreturn(0, &freelist);
                 }
             }
@@ -2277,6 +2163,7 @@ vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs,
                 current_arg = find_keyword(kwnames, kwstack, keyword);
             }
             if (current_arg) {
+                Py_DECREF(current_arg);
                 /* arg present in tuple and in dict */
                 PyErr_Format(PyExc_TypeError,
                              "argument for %.200s%s given by name ('%U') "
@@ -2331,7 +2218,6 @@ _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
     int i, posonly, minposonly, maxargs;
     int reqlimit = minkw ? maxpos + minkw : minpos;
     Py_ssize_t nkwargs;
-    PyObject *current_arg;
     PyObject * const *kwstack = NULL;
 
     assert(kwargs == NULL || PyDict_Check(kwargs));
@@ -2351,7 +2237,7 @@ _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
         args = buf;
     }
 
-    if (!parser_init(parser)) {
+    if (parser_init(parser) < 0) {
         return NULL;
     }
 
@@ -2426,11 +2312,11 @@ _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
 
     /* copy keyword args using kwtuple to drive process */
     for (i = Py_MAX((int)nargs, posonly); i < maxargs; i++) {
+        PyObject *current_arg;
         if (nkwargs) {
             keyword = PyTuple_GET_ITEM(kwtuple, i - posonly);
             if (kwargs != NULL) {
-                current_arg = PyDict_GetItemWithError(kwargs, keyword);
-                if (!current_arg && PyErr_Occurred()) {
+                if (PyDict_GetItemRef(kwargs, keyword, &current_arg) < 0) {
                     return NULL;
                 }
             }
@@ -2448,6 +2334,7 @@ _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
         buf[i] = current_arg;
 
         if (current_arg) {
+            Py_DECREF(current_arg);
             --nkwargs;
         }
         else if (i < minpos || (maxpos <= i && i < reqlimit)) {
@@ -2465,10 +2352,10 @@ _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
     if (nkwargs > 0) {
         /* make sure there are no arguments given by name and position */
         for (i = posonly; i < nargs; i++) {
+            PyObject *current_arg;
             keyword = PyTuple_GET_ITEM(kwtuple, i - posonly);
             if (kwargs != NULL) {
-                current_arg = PyDict_GetItemWithError(kwargs, keyword);
-                if (!current_arg && PyErr_Occurred()) {
+                if (PyDict_GetItemRef(kwargs, keyword, &current_arg) < 0) {
                     return NULL;
                 }
             }
@@ -2476,6 +2363,7 @@ _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
                 current_arg = find_keyword(kwnames, kwstack, keyword);
             }
             if (current_arg) {
+                Py_DECREF(current_arg);
                 /* arg present in tuple and in dict */
                 PyErr_Format(PyExc_TypeError,
                              "argument for %.200s%s given by name ('%U') "
@@ -2507,7 +2395,6 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
     int i, posonly, minposonly, maxargs;
     int reqlimit = minkw ? maxpos + minkw : minpos;
     Py_ssize_t nkwargs;
-    PyObject *current_arg;
     PyObject * const *kwstack = NULL;
 
     assert(kwargs == NULL || PyDict_Check(kwargs));
@@ -2527,7 +2414,7 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
         args = buf;
     }
 
-    if (!parser_init(parser)) {
+    if (parser_init(parser) < 0) {
         return NULL;
     }
 
@@ -2580,13 +2467,12 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
     }
 
     /* copy keyword args using kwtuple to drive process */
-    for (i = Py_MAX((int)nargs, posonly) -
-         Py_SAFE_DOWNCAST(varargssize, Py_ssize_t, int); i < maxargs; i++) {
+    for (i = Py_MAX((int)nargs, posonly) - Py_SAFE_DOWNCAST(varargssize, Py_ssize_t, int); i < maxargs; i++) {
+        PyObject *current_arg;
         if (nkwargs) {
             keyword = PyTuple_GET_ITEM(kwtuple, i - posonly);
             if (kwargs != NULL) {
-                current_arg = PyDict_GetItemWithError(kwargs, keyword);
-                if (!current_arg && PyErr_Occurred()) {
+                if (PyDict_GetItemRef(kwargs, keyword, &current_arg) < 0) {
                     goto exit;
                 }
             }
@@ -2611,7 +2497,7 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
          *
          * Otherwise, we leave a place at `buf[vararg]` for vararg tuple
          * so the index is `i + 1`. */
-        if (nargs < vararg) {
+        if (nargs < vararg && i != vararg) {
             buf[i] = current_arg;
         }
         else {
@@ -2619,6 +2505,7 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
         }
 
         if (current_arg) {
+            Py_DECREF(current_arg);
             --nkwargs;
         }
         else if (i < minpos || (maxpos <= i && i < reqlimit)) {
@@ -2710,9 +2597,6 @@ skipitem(const char **p_format, va_list *p_va, int flags)
             }
             if (*format == '#') {
                 if (p_va != NULL) {
-                    if (!(flags & FLAG_SIZE_T)) {
-                        return "PY_SSIZE_T_CLEAN macro must be defined for '#' formats";
-                    }
                     (void) va_arg(*p_va, Py_ssize_t *);
                 }
                 format++;
@@ -2954,7 +2838,3 @@ _PyArg_Fini(void)
     }
     _PyRuntime.getargs.static_parsers = NULL;
 }
-
-#ifdef __cplusplus
-};
-#endif
diff --git a/Python/getopt.c b/Python/getopt.c
index 4135bf1446ecfc..f64c89fa22734a 100644
--- a/Python/getopt.c
+++ b/Python/getopt.c
@@ -29,10 +29,6 @@
 #include <wchar.h>
 #include "pycore_getopt.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 int _PyOS_opterr = 1;                 /* generate error messages */
 Py_ssize_t _PyOS_optind = 1;          /* index into argv array   */
 const wchar_t *_PyOS_optarg = NULL;   /* optional argument       */
@@ -172,8 +168,3 @@ int _PyOS_GetOpt(Py_ssize_t argc, wchar_t * const *argv, int *longindex)
 
     return option;
 }
-
-#ifdef __cplusplus
-}
-#endif
-
diff --git a/Python/hamt.c b/Python/hamt.c
index 8cb94641bef251..a8fbb00b807934 100644
--- a/Python/hamt.c
+++ b/Python/hamt.c
@@ -1,9 +1,10 @@
 #include "Python.h"
-
-#include "pycore_bitutils.h"      // _Py_popcount32
+#include "pycore_bitutils.h"      // _Py_popcount32()
 #include "pycore_hamt.h"
 #include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_long.h"          // _PyLong_Format()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
+
 #include <stddef.h>               // offsetof()
 
 /*
@@ -514,7 +515,7 @@ hamt_node_bitmap_new(Py_ssize_t size)
         /* Since bitmap nodes are immutable, we can cache the instance
            for size=0 and reuse it whenever we need an empty bitmap node.
         */
-        return (PyHamtNode *)Py_NewRef(&_Py_SINGLETON(hamt_bitmap_node_empty));
+        return (PyHamtNode *)&_Py_SINGLETON(hamt_bitmap_node_empty);
     }
 
     assert(size >= 0);
@@ -2425,7 +2426,7 @@ hamt_alloc(void)
 }
 
 #define _empty_hamt \
-    (&_Py_INTERP_SINGLETON(_PyInterpreterState_Get(), hamt_empty))
+    (&_Py_INTERP_SINGLETON(_PyInterpreterState_GET(), hamt_empty))
 
 PyHamtObject *
 _PyHamt_New(void)
diff --git a/Python/hashtable.c b/Python/hashtable.c
index 09501de199b0e6..faf68fe4ff0bca 100644
--- a/Python/hashtable.c
+++ b/Python/hashtable.c
@@ -45,7 +45,8 @@
 */
 
 #include "Python.h"
-#include "pycore_hashtable.h"
+#include "pycore_hashtable.h"     // export _Py_hashtable_new()
+#include "pycore_pyhash.h"        // _Py_HashPointerRaw()
 
 #define HASHTABLE_MIN_SIZE 16
 #define HASHTABLE_HIGH 0.50
@@ -128,6 +129,13 @@ _Py_hashtable_size(const _Py_hashtable_t *ht)
 }
 
 
+size_t
+_Py_hashtable_len(const _Py_hashtable_t *ht)
+{
+    return ht->nentries;
+}
+
+
 _Py_hashtable_entry_t *
 _Py_hashtable_get_entry_generic(_Py_hashtable_t *ht, const void *key)
 {
@@ -218,7 +226,6 @@ _Py_hashtable_set(_Py_hashtable_t *ht, const void *key, void *value)
     assert(entry == NULL);
 #endif
 
-
     entry = ht->alloc.malloc(sizeof(_Py_hashtable_entry_t));
     if (entry == NULL) {
         /* memory allocation failed */
diff --git a/Python/import.c b/Python/import.c
index 9e1857d5f3e4e6..2dd95d8364a0be 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -1,28 +1,28 @@
 /* Module definition and import implementation */
 
 #include "Python.h"
-
+#include "pycore_hashtable.h"     // _Py_hashtable_new_full()
 #include "pycore_import.h"        // _PyImport_BootstrapImp()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_interp.h"        // struct _import_runtime_state
 #include "pycore_namespace.h"     // _PyNamespace_Type
+#include "pycore_object.h"        // _Py_SetImmortal()
 #include "pycore_pyerrors.h"      // _PyErr_SetString()
 #include "pycore_pyhash.h"        // _Py_KeyedHash()
 #include "pycore_pylifecycle.h"
 #include "pycore_pymem.h"         // _PyMem_SetDefaultAllocator()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_sysmodule.h"     // _PySys_Audit()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
+
 #include "marshal.h"              // PyMarshal_ReadObjectFromString()
-#include "importdl.h"             // _PyImport_DynLoadFiletab
+#include "pycore_importdl.h"      // _PyImport_DynLoadFiletab
 #include "pydtrace.h"             // PyDTrace_IMPORT_FIND_LOAD_START_ENABLED()
 #include <stdbool.h>              // bool
 
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
-#ifdef __cplusplus
-extern "C" {
-#endif
 
 
 /*[clinic input]
@@ -209,17 +209,6 @@ PyImport_GetModuleDict(void)
     return MODULES(interp);
 }
 
-// This is only kept around for extensions that use _Py_IDENTIFIER.
-PyObject *
-_PyImport_GetModuleId(_Py_Identifier *nameid)
-{
-    PyObject *name = _PyUnicode_FromId(nameid); /* borrowed */
-    if (name == NULL) {
-        return NULL;
-    }
-    return PyImport_GetModule(name);
-}
-
 int
 _PyImport_SetModule(PyObject *name, PyObject *m)
 {
@@ -248,16 +237,7 @@ import_get_module(PyThreadState *tstate, PyObject *name)
 
     PyObject *m;
     Py_INCREF(modules);
-    if (PyDict_CheckExact(modules)) {
-        m = PyDict_GetItemWithError(modules, name);  /* borrowed */
-        Py_XINCREF(m);
-    }
-    else {
-        m = PyObject_GetItem(modules, name);
-        if (m == NULL && _PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-            _PyErr_Clear(tstate);
-        }
-    }
+    (void)PyMapping_GetOptionalItem(modules, name, &m);
     Py_DECREF(modules);
     return m;
 }
@@ -272,18 +252,21 @@ import_ensure_initialized(PyInterpreterState *interp, PyObject *mod, PyObject *n
        NOTE: because of this, initializing must be set *before*
        stuffing the new module in sys.modules.
     */
-    spec = PyObject_GetAttr(mod, &_Py_ID(__spec__));
-    int busy = _PyModuleSpec_IsInitializing(spec);
-    Py_XDECREF(spec);
-    if (busy) {
-        /* Wait until module is done importing. */
-        PyObject *value = _PyObject_CallMethodOneArg(
-            IMPORTLIB(interp), &_Py_ID(_lock_unlock_module), name);
-        if (value == NULL) {
-            return -1;
-        }
-        Py_DECREF(value);
+    int rc = PyObject_GetOptionalAttr(mod, &_Py_ID(__spec__), &spec);
+    if (rc > 0) {
+        rc = _PyModuleSpec_IsInitializing(spec);
+        Py_DECREF(spec);
+    }
+    if (rc <= 0) {
+        return rc;
+    }
+    /* Wait until module is done importing. */
+    PyObject *value = PyObject_CallMethodOneArg(
+        IMPORTLIB(interp), &_Py_ID(_lock_unlock_module), name);
+    if (value == NULL) {
+        return -1;
     }
+    Py_DECREF(value);
     return 0;
 }
 
@@ -321,18 +304,7 @@ import_add_module(PyThreadState *tstate, PyObject *name)
     }
 
     PyObject *m;
-    if (PyDict_CheckExact(modules)) {
-        m = Py_XNewRef(PyDict_GetItemWithError(modules, name));
-    }
-    else {
-        m = PyObject_GetItem(modules, name);
-        // For backward-compatibility we copy the behavior
-        // of PyDict_GetItemWithError().
-        if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
-            _PyErr_Clear(tstate);
-        }
-    }
-    if (_PyErr_Occurred(tstate)) {
+    if (PyMapping_GetOptionalItem(modules, name, &m) < 0) {
         return NULL;
     }
     if (m != NULL && PyModule_Check(m)) {
@@ -350,19 +322,52 @@ import_add_module(PyThreadState *tstate, PyObject *name)
     return m;
 }
 
+PyObject *
+PyImport_AddModuleRef(const char *name)
+{
+    PyObject *name_obj = PyUnicode_FromString(name);
+    if (name_obj == NULL) {
+        return NULL;
+    }
+    PyThreadState *tstate = _PyThreadState_GET();
+    PyObject *module = import_add_module(tstate, name_obj);
+    Py_DECREF(name_obj);
+    return module;
+}
+
+
 PyObject *
 PyImport_AddModuleObject(PyObject *name)
 {
     PyThreadState *tstate = _PyThreadState_GET();
     PyObject *mod = import_add_module(tstate, name);
-    if (mod) {
-        PyObject *ref = PyWeakref_NewRef(mod, NULL);
-        Py_DECREF(mod);
-        if (ref == NULL) {
-            return NULL;
-        }
-        mod = PyWeakref_GetObject(ref);
-        Py_DECREF(ref);
+    if (!mod) {
+        return NULL;
+    }
+
+    // gh-86160: PyImport_AddModuleObject() returns a borrowed reference.
+    // Create a weak reference to produce a borrowed reference, since it can
+    // become NULL. sys.modules type can be different than dict and it is not
+    // guaranteed that it keeps a strong reference to the module. It can be a
+    // custom mapping with __getitem__() which returns a new object or removes
+    // returned object, or __setitem__ which does nothing. There is so much
+    // unknown.  With weakref we can be sure that we get either a reference to
+    // live object or NULL.
+    //
+    // Use PyImport_AddModuleRef() to avoid these issues.
+    PyObject *ref = PyWeakref_NewRef(mod, NULL);
+    Py_DECREF(mod);
+    if (ref == NULL) {
+        return NULL;
+    }
+    mod = _PyWeakref_GET_REF(ref);
+    Py_DECREF(ref);
+    Py_XDECREF(mod);
+
+    if (mod == NULL && !PyErr_Occurred()) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "sys.modules does not hold a strong reference "
+                        "to the module");
     }
     return mod; /* borrowed reference */
 }
@@ -393,8 +398,8 @@ remove_module(PyThreadState *tstate, PyObject *name)
 
     PyObject *modules = MODULES(tstate->interp);
     if (PyDict_CheckExact(modules)) {
-        PyObject *mod = _PyDict_Pop(modules, name, Py_None);
-        Py_XDECREF(mod);
+        // Error is reported to the caller
+        (void)PyDict_Pop(modules, name, NULL);
     }
     else if (PyMapping_DelItem(modules, name) < 0) {
         if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
@@ -413,11 +418,7 @@ remove_module(PyThreadState *tstate, PyObject *name)
 Py_ssize_t
 _PyImport_GetNextModuleIndex(void)
 {
-    PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
-    LAST_MODULE_INDEX++;
-    Py_ssize_t index = LAST_MODULE_INDEX;
-    PyThread_release_lock(EXTENSIONS.mutex);
-    return index;
+    return _Py_atomic_add_ssize(&LAST_MODULE_INDEX, 1) + 1;
 }
 
 static const char *
@@ -582,7 +583,7 @@ _PyImport_ClearModulesByIndex(PyInterpreterState *interp)
     if (PyList_SetSlice(MODULES_BY_INDEX(interp),
                         0, PyList_GET_SIZE(MODULES_BY_INDEX(interp)),
                         NULL)) {
-        PyErr_WriteUnraisable(MODULES_BY_INDEX(interp));
+        PyErr_FormatUnraisable("Exception ignored on clearing interpreters module list");
     }
 }
 
@@ -596,7 +597,7 @@ _PyImport_ClearModulesByIndex(PyInterpreterState *interp)
     when an extension is loaded.  This includes when it is imported
     for the first time.
 
-    Here's a summary, using importlib._boostrap._load() as a starting point.
+    Here's a summary, using importlib._bootstrap._load() as a starting point.
 
     1.  importlib._bootstrap._load()
     2.    _load():  acquire import lock
@@ -703,10 +704,19 @@ _PyImport_ClearModulesByIndex(PyInterpreterState *interp)
    _PyRuntime.imports.pkgcontext, and PyModule_Create*() will
    substitute this (if the name actually matches).
 */
+
+#ifdef HAVE_THREAD_LOCAL
+_Py_thread_local const char *pkgcontext = NULL;
+# undef PKGCONTEXT
+# define PKGCONTEXT pkgcontext
+#endif
+
 const char *
 _PyImport_ResolveNameWithPackageContext(const char *name)
 {
+#ifndef HAVE_THREAD_LOCAL
     PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
+#endif
     if (PKGCONTEXT != NULL) {
         const char *p = strrchr(PKGCONTEXT, '.');
         if (p != NULL && strcmp(name, p+1) == 0) {
@@ -714,17 +724,23 @@ _PyImport_ResolveNameWithPackageContext(const char *name)
             PKGCONTEXT = NULL;
         }
     }
+#ifndef HAVE_THREAD_LOCAL
     PyThread_release_lock(EXTENSIONS.mutex);
+#endif
     return name;
 }
 
 const char *
 _PyImport_SwapPackageContext(const char *newcontext)
 {
+#ifndef HAVE_THREAD_LOCAL
     PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
+#endif
     const char *oldcontext = PKGCONTEXT;
     PKGCONTEXT = newcontext;
+#ifndef HAVE_THREAD_LOCAL
     PyThread_release_lock(EXTENSIONS.mutex);
+#endif
     return oldcontext;
 }
 
@@ -790,16 +806,6 @@ _PyImport_ClearExtension(PyObject *name, PyObject *filename)
 }
 
 
-/*******************/
-
-#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
-#include <emscripten.h>
-EM_JS(PyObject*, _PyImport_InitFunc_TrampolineCall, (PyModInitFunction func), {
-    return wasmTable.get(func)();
-});
-#endif // __EMSCRIPTEN__ && PY_CALL_TRAMPOLINE
-
-
 /*****************************/
 /* single-phase init modules */
 /*****************************/
@@ -872,13 +878,13 @@ gets even messier.
 static inline void
 extensions_lock_acquire(void)
 {
-    PyThread_acquire_lock(_PyRuntime.imports.extensions.mutex, WAIT_LOCK);
+    PyMutex_Lock(&_PyRuntime.imports.extensions.mutex);
 }
 
 static inline void
 extensions_lock_release(void)
 {
-    PyThread_release_lock(_PyRuntime.imports.extensions.mutex);
+    PyMutex_Unlock(&_PyRuntime.imports.extensions.mutex);
 }
 
 /* Magic for extension modules (built-in as well as dynamically
@@ -897,35 +903,79 @@ extensions_lock_release(void)
    dictionary, to avoid loading shared libraries twice.
 */
 
+static void *
+hashtable_key_from_2_strings(PyObject *str1, PyObject *str2, const char sep)
+{
+    Py_ssize_t str1_len, str2_len;
+    const char *str1_data = PyUnicode_AsUTF8AndSize(str1, &str1_len);
+    const char *str2_data = PyUnicode_AsUTF8AndSize(str2, &str2_len);
+    if (str1_data == NULL || str2_data == NULL) {
+        return NULL;
+    }
+    /* Make sure sep and the NULL byte won't cause an overflow. */
+    assert(SIZE_MAX - str1_len - str2_len > 2);
+    size_t size = str1_len + 1 + str2_len + 1;
+
+    char *key = PyMem_RawMalloc(size);
+    if (key == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+
+    strncpy(key, str1_data, str1_len);
+    key[str1_len] = sep;
+    strncpy(key + str1_len + 1, str2_data, str2_len + 1);
+    assert(strlen(key) == size - 1);
+    return key;
+}
+
+static Py_uhash_t
+hashtable_hash_str(const void *key)
+{
+    return _Py_HashBytes(key, strlen((const char *)key));
+}
+
+static int
+hashtable_compare_str(const void *key1, const void *key2)
+{
+    return strcmp((const char *)key1, (const char *)key2) == 0;
+}
+
 static void
-_extensions_cache_init(void)
+hashtable_destroy_str(void *ptr)
 {
-    /* The runtime (i.e. main interpreter) must be initializing,
-       so we don't need to worry about the lock. */
-    _PyThreadState_InitDetached(&EXTENSIONS.main_tstate,
-                                _PyInterpreterState_Main());
+    PyMem_RawFree(ptr);
 }
 
+#define HTSEP ':'
+
 static PyModuleDef *
 _extensions_cache_get(PyObject *filename, PyObject *name)
 {
     PyModuleDef *def = NULL;
+    void *key = NULL;
     extensions_lock_acquire();
 
-    PyObject *key = PyTuple_Pack(2, filename, name);
-    if (key == NULL) {
+    if (EXTENSIONS.hashtable == NULL) {
         goto finally;
     }
 
-    PyObject *extensions = EXTENSIONS.dict;
-    if (extensions == NULL) {
+    key = hashtable_key_from_2_strings(filename, name, HTSEP);
+    if (key == NULL) {
+        goto finally;
+    }
+    _Py_hashtable_entry_t *entry = _Py_hashtable_get_entry(
+            EXTENSIONS.hashtable, key);
+    if (entry == NULL) {
         goto finally;
     }
-    def = (PyModuleDef *)PyDict_GetItemWithError(extensions, key);
+    def = (PyModuleDef *)entry->value;
 
 finally:
-    Py_XDECREF(key);
     extensions_lock_release();
+    if (key != NULL) {
+        PyMem_RawFree(key);
+    }
     return def;
 }
 
@@ -933,124 +983,100 @@ static int
 _extensions_cache_set(PyObject *filename, PyObject *name, PyModuleDef *def)
 {
     int res = -1;
-    PyThreadState *oldts = NULL;
     extensions_lock_acquire();
 
-    /* Swap to the main interpreter, if necessary.  This matters if
-       the dict hasn't been created yet or if the item isn't in the
-       dict yet.  In both cases we must ensure the relevant objects
-       are created using the main interpreter. */
-    PyThreadState *main_tstate = &EXTENSIONS.main_tstate;
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (!_Py_IsMainInterpreter(interp)) {
-        _PyThreadState_BindDetached(main_tstate);
-        oldts = _PyThreadState_Swap(interp->runtime, main_tstate);
-        assert(!_Py_IsMainInterpreter(oldts->interp));
-
-        /* Make sure the name and filename objects are owned
-           by the main interpreter. */
-        name = PyUnicode_InternFromString(PyUnicode_AsUTF8(name));
-        assert(name != NULL);
-        filename = PyUnicode_InternFromString(PyUnicode_AsUTF8(filename));
-        assert(filename != NULL);
+    if (EXTENSIONS.hashtable == NULL) {
+        _Py_hashtable_allocator_t alloc = {PyMem_RawMalloc, PyMem_RawFree};
+        EXTENSIONS.hashtable = _Py_hashtable_new_full(
+            hashtable_hash_str,
+            hashtable_compare_str,
+            hashtable_destroy_str,  // key
+            /* There's no need to decref the def since it's immortal. */
+            NULL,  // value
+            &alloc
+        );
+        if (EXTENSIONS.hashtable == NULL) {
+            PyErr_NoMemory();
+            goto finally;
+        }
     }
 
-    PyObject *key = PyTuple_Pack(2, filename, name);
+    void *key = hashtable_key_from_2_strings(filename, name, HTSEP);
     if (key == NULL) {
         goto finally;
     }
 
-    PyObject *extensions = EXTENSIONS.dict;
-    if (extensions == NULL) {
-        extensions = PyDict_New();
-        if (extensions == NULL) {
+    int already_set = 0;
+    _Py_hashtable_entry_t *entry = _Py_hashtable_get_entry(
+            EXTENSIONS.hashtable, key);
+    if (entry == NULL) {
+        if (_Py_hashtable_set(EXTENSIONS.hashtable, key, def) < 0) {
+            PyMem_RawFree(key);
+            PyErr_NoMemory();
             goto finally;
         }
-        EXTENSIONS.dict = extensions;
-    }
-
-    PyModuleDef *actual = (PyModuleDef *)PyDict_GetItemWithError(extensions, key);
-    if (PyErr_Occurred()) {
-        goto finally;
     }
-    else if (actual != NULL) {
-        /* We expect it to be static, so it must be the same pointer. */
-        assert(def == actual);
-        res = 0;
-        goto finally;
+    else {
+        if (entry->value == NULL) {
+            entry->value = def;
+        }
+        else {
+            /* We expect it to be static, so it must be the same pointer. */
+            assert((PyModuleDef *)entry->value == def);
+            already_set = 1;
+        }
+        PyMem_RawFree(key);
     }
-
-    /* This might trigger a resize, which is why we must switch
-       to the main interpreter. */
-    res = PyDict_SetItem(extensions, key, (PyObject *)def);
-    if (res < 0) {
-        res = -1;
-        goto finally;
+    if (!already_set) {
+        /* We assume that all module defs are statically allocated
+           and will never be freed.  Otherwise, we would incref here. */
+        _Py_SetImmortal(def);
     }
     res = 0;
 
 finally:
-    Py_XDECREF(key);
-    if (oldts != NULL) {
-        _PyThreadState_Swap(interp->runtime, oldts);
-        _PyThreadState_UnbindDetached(main_tstate);
-        Py_DECREF(name);
-        Py_DECREF(filename);
-    }
     extensions_lock_release();
     return res;
 }
 
-static int
+static void
 _extensions_cache_delete(PyObject *filename, PyObject *name)
 {
-    int res = -1;
-    PyThreadState *oldts = NULL;
+    void *key = NULL;
     extensions_lock_acquire();
 
-    PyObject *key = PyTuple_Pack(2, filename, name);
-    if (key == NULL) {
+    if (EXTENSIONS.hashtable == NULL) {
+        /* It was never added. */
         goto finally;
     }
 
-    PyObject *extensions = EXTENSIONS.dict;
-    if (extensions == NULL) {
-        res = 0;
+    key = hashtable_key_from_2_strings(filename, name, HTSEP);
+    if (key == NULL) {
         goto finally;
     }
 
-    PyModuleDef *actual = (PyModuleDef *)PyDict_GetItemWithError(extensions, key);
-    if (PyErr_Occurred()) {
+    _Py_hashtable_entry_t *entry = _Py_hashtable_get_entry(
+            EXTENSIONS.hashtable, key);
+    if (entry == NULL) {
+        /* It was never added. */
         goto finally;
     }
-    else if (actual == NULL) {
-        /* It was already removed or never added. */
-        res = 0;
+    if (entry->value == NULL) {
+        /* It was already removed. */
         goto finally;
     }
-
-    /* Swap to the main interpreter, if necessary. */
-    PyThreadState *main_tstate = &EXTENSIONS.main_tstate;
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (!_Py_IsMainInterpreter(interp)) {
-        _PyThreadState_BindDetached(main_tstate);
-        oldts = _PyThreadState_Swap(interp->runtime, main_tstate);
-        assert(!_Py_IsMainInterpreter(oldts->interp));
-    }
-
-    if (PyDict_DelItem(extensions, key) < 0) {
-        goto finally;
-    }
-    res = 0;
+    /* If we hadn't made the stored defs immortal, we would decref here.
+       However, this decref would be problematic if the module def were
+       dynamically allocated, it were the last ref, and this function
+       were called with an interpreter other than the def's owner. */
+    assert(_Py_IsImmortal(entry->value));
+    entry->value = NULL;
 
 finally:
-    if (oldts != NULL) {
-        _PyThreadState_Swap(interp->runtime, oldts);
-        _PyThreadState_UnbindDetached(main_tstate);
-    }
-    Py_XDECREF(key);
     extensions_lock_release();
-    return res;
+    if (key != NULL) {
+        PyMem_RawFree(key);
+    }
 }
 
 static void
@@ -1058,11 +1084,12 @@ _extensions_cache_clear_all(void)
 {
     /* The runtime (i.e. main interpreter) must be finalizing,
        so we don't need to worry about the lock. */
-    // XXX assert(_Py_IsMainInterpreter(_PyInterpreterState_GET()));
-    Py_CLEAR(EXTENSIONS.dict);
-    _PyThreadState_ClearDetached(&EXTENSIONS.main_tstate);
+    _Py_hashtable_destroy(EXTENSIONS.hashtable);
+    EXTENSIONS.hashtable = NULL;
 }
 
+#undef HTSEP
+
 
 static bool
 check_multi_interp_extensions(PyInterpreterState *interp)
@@ -1084,7 +1111,7 @@ check_multi_interp_extensions(PyInterpreterState *interp)
 int
 _PyImport_CheckSubinterpIncompatibleExtensionAllowed(const char *name)
 {
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     if (check_multi_interp_extensions(interp)) {
         assert(!_Py_IsMainInterpreter(interp));
         PyErr_Format(PyExc_ImportError,
@@ -1207,6 +1234,15 @@ import_find_extension(PyThreadState *tstate, PyObject *name,
         return NULL;
     }
 
+    /* It may have been successfully imported previously
+       in an interpreter that allows legacy modules
+       but is not allowed in the current interpreter. */
+    const char *name_buf = PyUnicode_AsUTF8(name);
+    assert(name_buf != NULL);
+    if (_PyImport_CheckSubinterpIncompatibleExtensionAllowed(name_buf) < 0) {
+        return NULL;
+    }
+
     PyObject *mod, *mdict;
     PyObject *modules = MODULES(tstate->interp);
 
@@ -1214,6 +1250,8 @@ import_find_extension(PyThreadState *tstate, PyObject *name,
         PyObject *m_copy = def->m_base.m_copy;
         /* Module does not support repeated initialization */
         if (m_copy == NULL) {
+            /* It might be a core module (e.g. sys & builtins),
+               for which we don't set m_copy. */
             m_copy = get_core_module_dict(tstate->interp, name, filename);
             if (m_copy == NULL) {
                 return NULL;
@@ -1236,7 +1274,7 @@ import_find_extension(PyThreadState *tstate, PyObject *name,
     else {
         if (def->m_base.m_init == NULL)
             return NULL;
-        mod = _PyImport_InitFunc_TrampolineCall(def->m_base.m_init);
+        mod = def->m_base.m_init();
         if (mod == NULL)
             return NULL;
         if (PyObject_SetItem(modules, name, mod) == -1) {
@@ -1283,9 +1321,7 @@ clear_singlephase_extension(PyInterpreterState *interp,
     }
 
     /* Clear the cached module def. */
-    if (_extensions_cache_delete(filename, name) < 0) {
-        return -1;
-    }
+    _extensions_cache_delete(filename, name);
 
     return 0;
 }
@@ -1349,10 +1385,9 @@ create_builtin(PyThreadState *tstate, PyObject *name, PyObject *spec)
         if (_PyUnicode_EqualToASCIIString(name, p->name)) {
             if (p->initfunc == NULL) {
                 /* Cannot re-init internal module ("sys" or "builtins") */
-                mod = PyImport_AddModuleObject(name);
-                return Py_XNewRef(mod);
+                return import_add_module(tstate, name);
             }
-            mod = _PyImport_InitFunc_TrampolineCall(*p->initfunc);
+            mod = (*p->initfunc)();
             if (mod == NULL) {
                 return NULL;
             }
@@ -1612,7 +1647,7 @@ PyImport_ExecCodeModuleWithPathnames(const char *name, PyObject *co,
         external= PyObject_GetAttrString(IMPORTLIB(interp),
                                          "_bootstrap_external");
         if (external != NULL) {
-            pathobj = _PyObject_CallMethodOneArg(
+            pathobj = PyObject_CallMethodOneArg(
                 external, &_Py_ID(_get_sourcefile), cpathobj);
             Py_DECREF(external);
         }
@@ -1966,7 +2001,6 @@ look_up_frozen(const char *name)
 struct frozen_info {
     PyObject *nameobj;
     const char *data;
-    PyObject *(*get_code)(void);
     Py_ssize_t size;
     bool is_package;
     bool is_alias;
@@ -2000,7 +2034,6 @@ find_frozen(PyObject *nameobj, struct frozen_info *info)
     if (info != NULL) {
         info->nameobj = nameobj;  // borrowed
         info->data = (const char *)p->code;
-        info->get_code = p->get_code;
         info->size = p->size;
         info->is_package = p->is_package;
         if (p->size < 0) {
@@ -2012,10 +2045,6 @@ find_frozen(PyObject *nameobj, struct frozen_info *info)
         info->is_alias = resolve_module_alias(name, _PyImport_FrozenAliases,
                                               &info->origname);
     }
-    if (p->code == NULL && p->size == 0 && p->get_code != NULL) {
-        /* It is only deepfrozen. */
-        return FROZEN_OKAY;
-    }
     if (p->code == NULL) {
         /* It is frozen but marked as un-importable. */
         return FROZEN_EXCLUDED;
@@ -2030,14 +2059,10 @@ find_frozen(PyObject *nameobj, struct frozen_info *info)
 static PyObject *
 unmarshal_frozen_code(PyInterpreterState *interp, struct frozen_info *info)
 {
-    if (info->get_code && _Py_IsMainInterpreter(interp)) {
-        PyObject *code = info->get_code();
-        assert(code != NULL);
-        return code;
-    }
     PyObject *co = PyMarshal_ReadObjectFromString(info->data, info->size);
     if (co == NULL) {
         /* Does not contain executable code. */
+        PyErr_Clear();
         set_frozen_error(FROZEN_INVALID, info->nameobj);
         return NULL;
     }
@@ -2225,11 +2250,12 @@ init_importlib(PyThreadState *tstate, PyObject *sysmod)
     if (PyImport_ImportFrozenModule("_frozen_importlib") <= 0) {
         return -1;
     }
-    PyObject *importlib = PyImport_AddModule("_frozen_importlib"); // borrowed
+
+    PyObject *importlib = PyImport_AddModuleRef("_frozen_importlib");
     if (importlib == NULL) {
         return -1;
     }
-    IMPORTLIB(interp) = Py_NewRef(importlib);
+    IMPORTLIB(interp) = importlib;
 
     // Import the _imp module
     if (verbose) {
@@ -2332,19 +2358,24 @@ get_path_importer(PyThreadState *tstate, PyObject *path_importer_cache,
     PyObject *importer;
     Py_ssize_t j, nhooks;
 
-    /* These conditions are the caller's responsibility: */
-    assert(PyList_Check(path_hooks));
-    assert(PyDict_Check(path_importer_cache));
+    if (!PyList_Check(path_hooks)) {
+        PyErr_SetString(PyExc_RuntimeError, "sys.path_hooks is not a list");
+        return NULL;
+    }
+    if (!PyDict_Check(path_importer_cache)) {
+        PyErr_SetString(PyExc_RuntimeError, "sys.path_importer_cache is not a dict");
+        return NULL;
+    }
 
     nhooks = PyList_Size(path_hooks);
     if (nhooks < 0)
         return NULL; /* Shouldn't happen */
 
-    importer = PyDict_GetItemWithError(path_importer_cache, p);
-    if (importer != NULL || _PyErr_Occurred(tstate)) {
-        return Py_XNewRef(importer);
+    if (PyDict_GetItemRef(path_importer_cache, p, &importer) != 0) {
+        // found or error
+        return importer;
     }
-
+    // not found
     /* set path_importer_cache[p] to None to avoid recursion */
     if (PyDict_SetItem(path_importer_cache, p, Py_None) != 0)
         return NULL;
@@ -2377,11 +2408,22 @@ PyImport_GetImporter(PyObject *path)
 {
     PyThreadState *tstate = _PyThreadState_GET();
     PyObject *path_importer_cache = PySys_GetObject("path_importer_cache");
+    if (path_importer_cache == NULL) {
+        PyErr_SetString(PyExc_RuntimeError, "lost sys.path_importer_cache");
+        return NULL;
+    }
+    Py_INCREF(path_importer_cache);
     PyObject *path_hooks = PySys_GetObject("path_hooks");
-    if (path_importer_cache == NULL || path_hooks == NULL) {
+    if (path_hooks == NULL) {
+        PyErr_SetString(PyExc_RuntimeError, "lost sys.path_hooks");
+        Py_DECREF(path_importer_cache);
         return NULL;
     }
-    return get_path_importer(tstate, path_importer_cache, path_hooks, path);
+    Py_INCREF(path_hooks);
+    PyObject *importer = get_path_importer(tstate, path_importer_cache, path_hooks, path);
+    Py_DECREF(path_hooks);
+    Py_DECREF(path_importer_cache);
+    return importer;
 }
 
 
@@ -2393,12 +2435,11 @@ int
 _PyImport_InitDefaultImportFunc(PyInterpreterState *interp)
 {
     // Get the __import__ function
-    PyObject *import_func = _PyDict_GetItemStringWithError(interp->builtins,
-                                                           "__import__");
-    if (import_func == NULL) {
+    PyObject *import_func;
+    if (PyDict_GetItemStringRef(interp->builtins, "__import__", &import_func) <= 0) {
         return -1;
     }
-    IMPORT_FUNC(interp) = Py_NewRef(import_func);
+    IMPORT_FUNC(interp) = import_func;
     return 0;
 }
 
@@ -2439,6 +2480,12 @@ PyImport_ImportModule(const char *name)
 PyObject *
 PyImport_ImportModuleNoBlock(const char *name)
 {
+    if (PyErr_WarnEx(PyExc_DeprecationWarning,
+        "PyImport_ImportModuleNoBlock() is deprecated and scheduled for "
+        "removal in Python 3.15. Use PyImport_ImportModule() instead.", 1))
+    {
+        return NULL;
+    }
     return PyImport_ImportModule(name);
 }
 
@@ -2517,7 +2564,7 @@ resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level
 {
     PyObject *abs_name;
     PyObject *package = NULL;
-    PyObject *spec;
+    PyObject *spec = NULL;
     Py_ssize_t last_dot;
     PyObject *base;
     int level_up;
@@ -2530,20 +2577,18 @@ resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level
         _PyErr_SetString(tstate, PyExc_TypeError, "globals must be a dict");
         goto error;
     }
-    package = PyDict_GetItemWithError(globals, &_Py_ID(__package__));
+    if (PyDict_GetItemRef(globals, &_Py_ID(__package__), &package) < 0) {
+        goto error;
+    }
     if (package == Py_None) {
+        Py_DECREF(package);
         package = NULL;
     }
-    else if (package == NULL && _PyErr_Occurred(tstate)) {
-        goto error;
-    }
-    spec = PyDict_GetItemWithError(globals, &_Py_ID(__spec__));
-    if (spec == NULL && _PyErr_Occurred(tstate)) {
+    if (PyDict_GetItemRef(globals, &_Py_ID(__spec__), &spec) < 0) {
         goto error;
     }
 
     if (package != NULL) {
-        Py_INCREF(package);
         if (!PyUnicode_Check(package)) {
             _PyErr_SetString(tstate, PyExc_TypeError,
                              "package must be a string");
@@ -2587,16 +2632,15 @@ resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level
             goto error;
         }
 
-        package = PyDict_GetItemWithError(globals, &_Py_ID(__name__));
+        if (PyDict_GetItemRef(globals, &_Py_ID(__name__), &package) < 0) {
+            goto error;
+        }
         if (package == NULL) {
-            if (!_PyErr_Occurred(tstate)) {
-                _PyErr_SetString(tstate, PyExc_KeyError,
-                                 "'__name__' not in globals");
-            }
+            _PyErr_SetString(tstate, PyExc_KeyError,
+                             "'__name__' not in globals");
             goto error;
         }
 
-        Py_INCREF(package);
         if (!PyUnicode_Check(package)) {
             _PyErr_SetString(tstate, PyExc_TypeError,
                              "__name__ must be a string");
@@ -2610,10 +2654,6 @@ resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level
         if (!haspath) {
             Py_ssize_t dot;
 
-            if (PyUnicode_READY(package) < 0) {
-                goto error;
-            }
-
             dot = PyUnicode_FindChar(package, '.',
                                         0, PyUnicode_GET_LENGTH(package), -1);
             if (dot == -2) {
@@ -2648,6 +2688,7 @@ resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level
         }
     }
 
+    Py_XDECREF(spec);
     base = PyUnicode_Substring(package, 0, last_dot);
     Py_DECREF(package);
     if (base == NULL || PyUnicode_GET_LENGTH(name) == 0) {
@@ -2664,6 +2705,7 @@ resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level
                      "with no known parent package");
 
   error:
+    Py_XDECREF(spec);
     Py_XDECREF(package);
     return NULL;
 }
@@ -2762,9 +2804,6 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
                          "module name must be a string");
         goto error;
     }
-    if (PyUnicode_READY(name) < 0) {
-        goto error;
-    }
     if (level < 0) {
         _PyErr_SetString(tstate, PyExc_ValueError, "level must be >= 0");
         goto error;
@@ -2858,12 +2897,11 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
         }
     }
     else {
-        PyObject *path;
-        if (_PyObject_LookupAttr(mod, &_Py_ID(__path__), &path) < 0) {
+        int has_path = PyObject_HasAttrWithError(mod, &_Py_ID(__path__));
+        if (has_path < 0) {
             goto error;
         }
-        if (path) {
-            Py_DECREF(path);
+        if (has_path) {
             final_mod = PyObject_CallMethodObjArgs(
                         IMPORTLIB(interp), &_Py_ID(_handle_fromlist),
                         mod, fromlist, IMPORT_FUNC(interp), NULL);
@@ -3034,6 +3072,8 @@ void
 _PyImport_Fini(void)
 {
     /* Destroy the database used by _PyImport_{Fixup,Find}Extension */
+    // XXX Should we actually leave them (mostly) intact, since we don't
+    // ever dlclose() the module files?
     _extensions_cache_clear_all();
 
     /* Use the same memory allocator as _PyImport_Init(). */
@@ -3071,10 +3111,6 @@ _PyImport_Fini2(void)
 PyStatus
 _PyImport_InitCore(PyThreadState *tstate, PyObject *sysmod, int importlib)
 {
-    if (_Py_IsMainInterpreter(tstate->interp)) {
-        _extensions_cache_init();
-    }
-
     // XXX Initialize here: interp->modules and interp->import_func.
     // XXX Initialize here: sys.modules and sys.meta_path.
 
@@ -3118,13 +3154,13 @@ _PyImport_FiniCore(PyInterpreterState *interp)
     int verbose = _PyInterpreterState_GetConfig(interp)->verbose;
 
     if (_PySys_ClearAttrString(interp, "meta_path", verbose) < 0) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on clearing sys.meta_path");
     }
 
     // XXX Pull in most of finalize_modules() in pylifecycle.c.
 
     if (_PySys_ClearAttrString(interp, "modules", verbose) < 0) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on clearing sys.modules");
     }
 
     if (IMPORT_LOCK(interp) != NULL) {
@@ -3204,10 +3240,10 @@ _PyImport_FiniExternal(PyInterpreterState *interp)
     // XXX Uninstall importlib metapath importers here?
 
     if (_PySys_ClearAttrString(interp, "path_importer_cache", verbose) < 0) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on clearing sys.path_importer_cache");
     }
     if (_PySys_ClearAttrString(interp, "path_hooks", verbose) < 0) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on clearing sys.path_hooks");
     }
 }
 
@@ -3529,7 +3565,7 @@ _imp_get_frozen_object_impl(PyObject *module, PyObject *name,
     if (info.nameobj == NULL) {
         info.nameobj = name;
     }
-    if (info.size == 0 && info.get_code == NULL) {
+    if (info.size == 0) {
         /* Does not contain executable code. */
         set_frozen_error(FROZEN_INVALID, name);
         return NULL;
@@ -3696,16 +3732,8 @@ _imp_create_dynamic_impl(PyObject *module, PyObject *spec, PyObject *file)
 
     PyThreadState *tstate = _PyThreadState_GET();
     mod = import_find_extension(tstate, name, path);
-    if (mod != NULL) {
-        const char *name_buf = PyUnicode_AsUTF8(name);
-        assert(name_buf != NULL);
-        if (_PyImport_CheckSubinterpIncompatibleExtensionAllowed(name_buf) < 0) {
-            Py_DECREF(mod);
-            mod = NULL;
-        }
-        goto finally;
-    }
-    else if (PyErr_Occurred()) {
+    if (mod != NULL || _PyErr_Occurred(tstate)) {
+        assert(mod == NULL || !_PyErr_Occurred(tstate));
         goto finally;
     }
 
@@ -3825,14 +3853,9 @@ imp_module_exec(PyObject *module)
 {
     const wchar_t *mode = _Py_GetConfig()->check_hash_pycs_mode;
     PyObject *pyc_mode = PyUnicode_FromWideChar(mode, -1);
-    if (pyc_mode == NULL) {
-        return -1;
-    }
-    if (PyModule_AddObjectRef(module, "check_hash_based_pycs", pyc_mode) < 0) {
-        Py_DECREF(pyc_mode);
+    if (PyModule_Add(module, "check_hash_based_pycs", pyc_mode) < 0) {
         return -1;
     }
-    Py_DECREF(pyc_mode);
 
     return 0;
 }
@@ -3858,8 +3881,3 @@ PyInit__imp(void)
 {
     return PyModuleDef_Init(&imp_module);
 }
-
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Python/importdl.c b/Python/importdl.c
index 3a3a30ddbdcdb5..7dfd301d77efb4 100644
--- a/Python/importdl.c
+++ b/Python/importdl.c
@@ -4,6 +4,7 @@
 #include "Python.h"
 #include "pycore_call.h"
 #include "pycore_import.h"
+#include "pycore_pyerrors.h"      // _PyErr_FormatFromCause()
 #include "pycore_pystate.h"
 #include "pycore_runtime.h"
 
@@ -14,7 +15,7 @@
 */
 #ifdef HAVE_DYNAMIC_LOADING
 
-#include "importdl.h"
+#include "pycore_importdl.h"
 
 #ifdef MS_WINDOWS
 extern dl_funcptr _PyImport_FindSharedFuncptrWindows(const char *prefix,
@@ -166,7 +167,7 @@ _PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *fp)
 
     /* Package context is needed for single-phase init */
     oldcontext = _PyImport_SwapPackageContext(newcontext);
-    m = _PyImport_InitFunc_TrampolineCall(p0);
+    m = p0();
     _PyImport_SwapPackageContext(oldcontext);
 
     if (m == NULL) {
diff --git a/Python/importdl.h b/Python/importdl.h
deleted file mode 100644
index 26d18b626df052..00000000000000
--- a/Python/importdl.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#ifndef Py_IMPORTDL_H
-#define Py_IMPORTDL_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-extern const char *_PyImport_DynLoadFiletab[];
-
-extern PyObject *_PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *);
-
-typedef PyObject *(*PyModInitFunction)(void);
-
-#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
-extern PyObject *_PyImport_InitFunc_TrampolineCall(PyModInitFunction func);
-#else
-#define _PyImport_InitFunc_TrampolineCall(func) (func)()
-#endif
-
-/* Max length of module suffix searched for -- accommodates "module.slb" */
-#define MAXSUFFIXSIZE 12
-
-#ifdef MS_WINDOWS
-#include <windows.h>
-typedef FARPROC dl_funcptr;
-#else
-typedef void (*dl_funcptr)(void);
-#endif
-
-
-#ifdef __cplusplus
-}
-#endif
-#endif /* !Py_IMPORTDL_H */
diff --git a/Python/initconfig.c b/Python/initconfig.c
index 0d42b7ea082d61..06e317907b8ec9 100644
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -9,6 +9,7 @@
 #include "pycore_pylifecycle.h"   // _Py_PreInitializeFromConfig()
 #include "pycore_pymem.h"         // _PyMem_SetDefaultAllocator()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_pystats.h"       // _Py_StatsOn()
 
 #include "osdefs.h"               // DELIM
 
@@ -23,6 +24,109 @@
 #  endif
 #endif
 
+/* --- PyConfig spec ---------------------------------------------- */
+
+typedef enum {
+    PyConfig_MEMBER_INT = 0,
+    PyConfig_MEMBER_UINT = 1,
+    PyConfig_MEMBER_ULONG = 2,
+
+    PyConfig_MEMBER_WSTR = 10,
+    PyConfig_MEMBER_WSTR_OPT = 11,
+    PyConfig_MEMBER_WSTR_LIST = 12,
+} PyConfigMemberType;
+
+typedef struct {
+    const char *name;
+    size_t offset;
+    PyConfigMemberType type;
+} PyConfigSpec;
+
+#define SPEC(MEMBER, TYPE) \
+    {#MEMBER, offsetof(PyConfig, MEMBER), PyConfig_MEMBER_##TYPE}
+
+static const PyConfigSpec PYCONFIG_SPEC[] = {
+    SPEC(_config_init, UINT),
+    SPEC(isolated, UINT),
+    SPEC(use_environment, UINT),
+    SPEC(dev_mode, UINT),
+    SPEC(install_signal_handlers, UINT),
+    SPEC(use_hash_seed, UINT),
+    SPEC(hash_seed, ULONG),
+    SPEC(faulthandler, UINT),
+    SPEC(tracemalloc, UINT),
+    SPEC(perf_profiling, UINT),
+    SPEC(import_time, UINT),
+    SPEC(code_debug_ranges, UINT),
+    SPEC(show_ref_count, UINT),
+    SPEC(dump_refs, UINT),
+    SPEC(dump_refs_file, WSTR_OPT),
+    SPEC(malloc_stats, UINT),
+    SPEC(filesystem_encoding, WSTR),
+    SPEC(filesystem_errors, WSTR),
+    SPEC(pycache_prefix, WSTR_OPT),
+    SPEC(parse_argv, UINT),
+    SPEC(orig_argv, WSTR_LIST),
+    SPEC(argv, WSTR_LIST),
+    SPEC(xoptions, WSTR_LIST),
+    SPEC(warnoptions, WSTR_LIST),
+    SPEC(site_import, UINT),
+    SPEC(bytes_warning, UINT),
+    SPEC(warn_default_encoding, UINT),
+    SPEC(inspect, UINT),
+    SPEC(interactive, UINT),
+    SPEC(optimization_level, UINT),
+    SPEC(parser_debug, UINT),
+    SPEC(write_bytecode, UINT),
+    SPEC(verbose, UINT),
+    SPEC(quiet, UINT),
+    SPEC(user_site_directory, UINT),
+    SPEC(configure_c_stdio, UINT),
+    SPEC(buffered_stdio, UINT),
+    SPEC(stdio_encoding, WSTR),
+    SPEC(stdio_errors, WSTR),
+#ifdef MS_WINDOWS
+    SPEC(legacy_windows_stdio, UINT),
+#endif
+    SPEC(check_hash_pycs_mode, WSTR),
+    SPEC(use_frozen_modules, UINT),
+    SPEC(safe_path, UINT),
+    SPEC(int_max_str_digits, INT),
+    SPEC(cpu_count, INT),
+    SPEC(pathconfig_warnings, UINT),
+    SPEC(program_name, WSTR),
+    SPEC(pythonpath_env, WSTR_OPT),
+    SPEC(home, WSTR_OPT),
+    SPEC(platlibdir, WSTR),
+    SPEC(sys_path_0, WSTR_OPT),
+    SPEC(module_search_paths_set, UINT),
+    SPEC(module_search_paths, WSTR_LIST),
+    SPEC(stdlib_dir, WSTR_OPT),
+    SPEC(executable, WSTR_OPT),
+    SPEC(base_executable, WSTR_OPT),
+    SPEC(prefix, WSTR_OPT),
+    SPEC(base_prefix, WSTR_OPT),
+    SPEC(exec_prefix, WSTR_OPT),
+    SPEC(base_exec_prefix, WSTR_OPT),
+    SPEC(skip_source_first_line, UINT),
+    SPEC(run_command, WSTR_OPT),
+    SPEC(run_module, WSTR_OPT),
+    SPEC(run_filename, WSTR_OPT),
+    SPEC(_install_importlib, UINT),
+    SPEC(_init_main, UINT),
+    SPEC(_is_python_build, UINT),
+#ifdef Py_STATS
+    SPEC(_pystats, UINT),
+#endif
+#ifdef Py_DEBUG
+    SPEC(run_presite, WSTR_OPT),
+#endif
+    {NULL, 0, 0},
+};
+
+#undef SPEC
+
+
 /* --- Command line options --------------------------------------- */
 
 /* Short usage message (with %s for argv0) */
@@ -49,7 +153,7 @@ Options (and corresponding environment variables):\n\
          .pyc extension; also PYTHONOPTIMIZE=x\n\
 -OO    : do -O changes and also discard docstrings; add .opt-2 before\n\
          .pyc extension\n\
--P     : don't prepend a potentially unsafe path to sys.path\n\
+-P     : don't prepend a potentially unsafe path to sys.path; also PYTHONSAFEPATH\n\
 -q     : don't print version and copyright messages on interactive startup\n\
 -s     : don't add user site directory to sys.path; also PYTHONNOUSERSITE\n\
 -S     : don't imply 'import site' on initialization\n\
@@ -129,13 +233,22 @@ The following implementation-specific options are available:\n\
 \n\
 -X int_max_str_digits=number: limit the size of int<->str conversions.\n\
     This helps avoid denial of service attacks when parsing untrusted data.\n\
-    The default is sys.int_info.default_max_str_digits.  0 disables."
+    The default is sys.int_info.default_max_str_digits.  0 disables.\n\
+\n\
+-X cpu_count=[n|default]: Override the return value of os.cpu_count(),\n\
+    os.process_cpu_count(), and multiprocessing.cpu_count(). This can help users who need\n\
+    to limit resources in a container."
 
 #ifdef Py_STATS
 "\n\
 \n\
 -X pystats: Enable pystats collection at startup."
 #endif
+#ifdef Py_DEBUG
+"\n\
+\n\
+-X presite=package.module: import this module before site.py is run."
+#endif
 ;
 
 /* Envvars that don't have equivalent command-line options are listed first */
@@ -144,7 +257,6 @@ static const char usage_envvars[] =
 "PYTHONSTARTUP: file executed on interactive startup (no default)\n"
 "PYTHONPATH   : '%lc'-separated list of directories prefixed to the\n"
 "               default module search path.  The result is sys.path.\n"
-"PYTHONSAFEPATH: don't prepend a potentially unsafe path to sys.path.\n"
 "PYTHONHOME   : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
 "               The default module search path uses %s.\n"
 "PYTHONPLATLIBDIR : override sys.platlibdir.\n"
@@ -168,14 +280,21 @@ static const char usage_envvars[] =
 "   locale coercion and locale compatibility warnings on stderr.\n"
 "PYTHONBREAKPOINT: if this variable is set to 0, it disables the default\n"
 "   debugger. It can be set to the callable of your debugger of choice.\n"
+"PYTHON_CPU_COUNT: Overrides the return value of os.process_cpu_count(),\n"
+"   os.cpu_count(), and multiprocessing.cpu_count() if set to a positive integer.\n"
 "PYTHONDEVMODE: enable the development mode.\n"
 "PYTHONPYCACHEPREFIX: root directory for bytecode cache (pyc) files.\n"
 "PYTHONWARNDEFAULTENCODING: enable opt-in EncodingWarning for 'encoding=None'.\n"
-"PYTHONNODEBUGRANGES: If this variable is set, it disables the inclusion of the \n"
+"PYTHONNODEBUGRANGES: if this variable is set, it disables the inclusion of the \n"
 "   tables mapping extra location information (end line, start column offset \n"
 "   and end column offset) to every instruction in code objects. This is useful \n"
 "   when smaller code objects and pyc files are desired as well as suppressing the \n"
 "   extra visual location indicators when the interpreter displays tracebacks.\n"
+"PYTHON_FROZEN_MODULES   : if this variable is set, it determines whether or not \n"
+"   frozen modules should be used. The default is \"on\" (or \"off\" if you are \n"
+"   running a local build).\n"
+"PYTHON_COLORS           : If this variable is set to 1, the interpreter will"
+"   colorize various kinds of output. Setting it to 0 deactivates this behavior.\n"
 "These variables have equivalent command-line parameters (see --help for details):\n"
 "PYTHONDEBUG             : enable parser debug mode (-d)\n"
 "PYTHONDONTWRITEBYTECODE : don't write .pyc files (-B)\n"
@@ -184,9 +303,17 @@ static const char usage_envvars[] =
 "                          (-X int_max_str_digits=number)\n"
 "PYTHONNOUSERSITE        : disable user site directory (-s)\n"
 "PYTHONOPTIMIZE          : enable level 1 optimizations (-O)\n"
+"PYTHONSAFEPATH          : don't prepend a potentially unsafe path to sys.path (-P)\n"
 "PYTHONUNBUFFERED        : disable stdout/stderr buffering (-u)\n"
 "PYTHONVERBOSE           : trace import statements (-v)\n"
-"PYTHONWARNINGS=arg      : warning control (-W arg)\n";
+"PYTHONWARNINGS=arg      : warning control (-W arg)\n"
+#ifdef Py_STATS
+"PYTHONSTATS             : turns on statistics gathering\n"
+#endif
+#ifdef Py_DEBUG
+"PYTHON_PRESITE=pkg.mod  : import this module before site.py is run\n"
+#endif
+;
 
 #if defined(MS_WINDOWS)
 #  define PYTHONHOMEHELP "<prefix>\\python{major}{minor}"
@@ -335,21 +462,34 @@ int PyStatus_IsExit(PyStatus status)
 int PyStatus_Exception(PyStatus status)
 { return _PyStatus_EXCEPTION(status); }
 
-PyObject*
+void
 _PyErr_SetFromPyStatus(PyStatus status)
 {
     if (!_PyStatus_IS_ERROR(status)) {
         PyErr_Format(PyExc_SystemError,
-                     "%s() expects an error PyStatus",
-                     _PyStatus_GET_FUNC());
+                     "_PyErr_SetFromPyStatus() status is not an error");
+        return;
+    }
+
+    const char *err_msg = status.err_msg;
+    if (err_msg == NULL || strlen(err_msg) == 0) {
+        PyErr_Format(PyExc_SystemError,
+                     "_PyErr_SetFromPyStatus() status has no error message");
+        return;
+    }
+
+    if (strcmp(err_msg, _PyStatus_NO_MEMORY_ERRMSG) == 0) {
+        PyErr_NoMemory();
+        return;
     }
-    else if (status.func) {
-        PyErr_Format(PyExc_ValueError, "%s: %s", status.func, status.err_msg);
+
+    const char *func = status.func;
+    if (func) {
+        PyErr_Format(PyExc_RuntimeError, "%s: %s", func, err_msg);
     }
     else {
-        PyErr_Format(PyExc_ValueError, "%s", status.err_msg);
+        PyErr_Format(PyExc_RuntimeError, "%s", err_msg);
     }
-    return NULL;
 }
 
 
@@ -514,94 +654,6 @@ _PyWideStringList_AsList(const PyWideStringList *list)
 }
 
 
-/* --- Py_SetStandardStreamEncoding() ----------------------------- */
-
-/* Helper to allow an embedding application to override the normal
- * mechanism that attempts to figure out an appropriate IO encoding
- */
-
-static char *_Py_StandardStreamEncoding = NULL;
-static char *_Py_StandardStreamErrors = NULL;
-
-int
-Py_SetStandardStreamEncoding(const char *encoding, const char *errors)
-{
-    if (Py_IsInitialized()) {
-        /* This is too late to have any effect */
-        return -1;
-    }
-
-    int res = 0;
-
-    /* Py_SetStandardStreamEncoding() can be called before Py_Initialize(),
-       but Py_Initialize() can change the allocator. Use a known allocator
-       to be able to release the memory later. */
-    PyMemAllocatorEx old_alloc;
-    _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-    /* Can't call PyErr_NoMemory() on errors, as Python hasn't been
-     * initialised yet.
-     *
-     * However, the raw memory allocators are initialised appropriately
-     * as C static variables, so _PyMem_RawStrdup is OK even though
-     * Py_Initialize hasn't been called yet.
-     */
-    if (encoding) {
-        PyMem_RawFree(_Py_StandardStreamEncoding);
-        _Py_StandardStreamEncoding = _PyMem_RawStrdup(encoding);
-        if (!_Py_StandardStreamEncoding) {
-            res = -2;
-            goto done;
-        }
-    }
-    if (errors) {
-        PyMem_RawFree(_Py_StandardStreamErrors);
-        _Py_StandardStreamErrors = _PyMem_RawStrdup(errors);
-        if (!_Py_StandardStreamErrors) {
-            PyMem_RawFree(_Py_StandardStreamEncoding);
-            _Py_StandardStreamEncoding = NULL;
-            res = -3;
-            goto done;
-        }
-    }
-#ifdef MS_WINDOWS
-    if (_Py_StandardStreamEncoding) {
-_Py_COMP_DIAG_PUSH
-_Py_COMP_DIAG_IGNORE_DEPR_DECLS
-        /* Overriding the stream encoding implies legacy streams */
-        Py_LegacyWindowsStdioFlag = 1;
-_Py_COMP_DIAG_POP
-    }
-#endif
-
-done:
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-    return res;
-}
-
-
-void
-_Py_ClearStandardStreamEncoding(void)
-{
-    /* Use the same allocator than Py_SetStandardStreamEncoding() */
-    PyMemAllocatorEx old_alloc;
-    _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-    /* We won't need them anymore. */
-    if (_Py_StandardStreamEncoding) {
-        PyMem_RawFree(_Py_StandardStreamEncoding);
-        _Py_StandardStreamEncoding = NULL;
-    }
-    if (_Py_StandardStreamErrors) {
-        PyMem_RawFree(_Py_StandardStreamErrors);
-        _Py_StandardStreamErrors = NULL;
-    }
-
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-}
-
-
 /* --- Py_GetArgcArgv() ------------------------------------------- */
 
 void
@@ -626,7 +678,7 @@ _Py_SetArgcArgv(Py_ssize_t argc, wchar_t * const *argv)
     _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
 
     // XXX _PyRuntime.orig_argv only gets cleared by Py_Main(),
-    // so it it currently leaks for embedders.
+    // so it currently leaks for embedders.
     res = _PyWideStringList_Copy(&_PyRuntime.orig_argv, &argv_list);
 
     PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
@@ -703,8 +755,13 @@ config_check_consistency(const PyConfig *config)
     assert(config->_is_python_build >= 0);
     assert(config->safe_path >= 0);
     assert(config->int_max_str_digits >= 0);
+    // cpu_count can be -1 if the user doesn't override it.
+    assert(config->cpu_count != 0);
     // config->use_frozen_modules is initialized later
     // by _PyConfig_InitImportConfig().
+#ifdef Py_STATS
+    assert(config->_pystats >= 0);
+#endif
     return 1;
 }
 #endif
@@ -739,6 +796,7 @@ PyConfig_Clear(PyConfig *config)
     CLEAR(config->exec_prefix);
     CLEAR(config->base_exec_prefix);
     CLEAR(config->platlibdir);
+    CLEAR(config->sys_path_0);
 
     CLEAR(config->filesystem_encoding);
     CLEAR(config->filesystem_errors);
@@ -748,6 +806,9 @@ PyConfig_Clear(PyConfig *config)
     CLEAR(config->run_module);
     CLEAR(config->run_filename);
     CLEAR(config->check_hash_pycs_mode);
+#ifdef Py_DEBUG
+    CLEAR(config->run_presite);
+#endif
 
     _PyWideStringList_Clear(&config->orig_argv);
 #undef CLEAR
@@ -799,6 +860,7 @@ _PyConfig_InitCompatConfig(PyConfig *config)
     config->int_max_str_digits = -1;
     config->_is_python_build = 0;
     config->code_debug_ranges = 1;
+    config->cpu_count = -1;
 }
 
 
@@ -936,100 +998,47 @@ PyConfig_SetBytesString(PyConfig *config, wchar_t **config_str,
 PyStatus
 _PyConfig_Copy(PyConfig *config, const PyConfig *config2)
 {
-    PyStatus status;
-
     PyConfig_Clear(config);
 
-#define COPY_ATTR(ATTR) config->ATTR = config2->ATTR
-#define COPY_WSTR_ATTR(ATTR) \
-    do { \
-        status = PyConfig_SetString(config, &config->ATTR, config2->ATTR); \
-        if (_PyStatus_EXCEPTION(status)) { \
-            return status; \
-        } \
-    } while (0)
-#define COPY_WSTRLIST(LIST) \
-    do { \
-        if (_PyWideStringList_Copy(&config->LIST, &config2->LIST) < 0) { \
-            return _PyStatus_NO_MEMORY(); \
-        } \
-    } while (0)
-
-    COPY_ATTR(_config_init);
-    COPY_ATTR(isolated);
-    COPY_ATTR(use_environment);
-    COPY_ATTR(dev_mode);
-    COPY_ATTR(install_signal_handlers);
-    COPY_ATTR(use_hash_seed);
-    COPY_ATTR(hash_seed);
-    COPY_ATTR(_install_importlib);
-    COPY_ATTR(faulthandler);
-    COPY_ATTR(tracemalloc);
-    COPY_ATTR(perf_profiling);
-    COPY_ATTR(import_time);
-    COPY_ATTR(code_debug_ranges);
-    COPY_ATTR(show_ref_count);
-    COPY_ATTR(dump_refs);
-    COPY_ATTR(dump_refs_file);
-    COPY_ATTR(malloc_stats);
-
-    COPY_WSTR_ATTR(pycache_prefix);
-    COPY_WSTR_ATTR(pythonpath_env);
-    COPY_WSTR_ATTR(home);
-    COPY_WSTR_ATTR(program_name);
-
-    COPY_ATTR(parse_argv);
-    COPY_WSTRLIST(argv);
-    COPY_WSTRLIST(warnoptions);
-    COPY_WSTRLIST(xoptions);
-    COPY_WSTRLIST(module_search_paths);
-    COPY_ATTR(module_search_paths_set);
-    COPY_WSTR_ATTR(stdlib_dir);
-
-    COPY_WSTR_ATTR(executable);
-    COPY_WSTR_ATTR(base_executable);
-    COPY_WSTR_ATTR(prefix);
-    COPY_WSTR_ATTR(base_prefix);
-    COPY_WSTR_ATTR(exec_prefix);
-    COPY_WSTR_ATTR(base_exec_prefix);
-    COPY_WSTR_ATTR(platlibdir);
-
-    COPY_ATTR(site_import);
-    COPY_ATTR(bytes_warning);
-    COPY_ATTR(warn_default_encoding);
-    COPY_ATTR(inspect);
-    COPY_ATTR(interactive);
-    COPY_ATTR(optimization_level);
-    COPY_ATTR(parser_debug);
-    COPY_ATTR(write_bytecode);
-    COPY_ATTR(verbose);
-    COPY_ATTR(quiet);
-    COPY_ATTR(user_site_directory);
-    COPY_ATTR(configure_c_stdio);
-    COPY_ATTR(buffered_stdio);
-    COPY_WSTR_ATTR(filesystem_encoding);
-    COPY_WSTR_ATTR(filesystem_errors);
-    COPY_WSTR_ATTR(stdio_encoding);
-    COPY_WSTR_ATTR(stdio_errors);
-#ifdef MS_WINDOWS
-    COPY_ATTR(legacy_windows_stdio);
-#endif
-    COPY_ATTR(skip_source_first_line);
-    COPY_WSTR_ATTR(run_command);
-    COPY_WSTR_ATTR(run_module);
-    COPY_WSTR_ATTR(run_filename);
-    COPY_WSTR_ATTR(check_hash_pycs_mode);
-    COPY_ATTR(pathconfig_warnings);
-    COPY_ATTR(_init_main);
-    COPY_ATTR(use_frozen_modules);
-    COPY_ATTR(safe_path);
-    COPY_WSTRLIST(orig_argv);
-    COPY_ATTR(_is_python_build);
-    COPY_ATTR(int_max_str_digits);
-
-#undef COPY_ATTR
-#undef COPY_WSTR_ATTR
-#undef COPY_WSTRLIST
+    PyStatus status;
+    const PyConfigSpec *spec = PYCONFIG_SPEC;
+    for (; spec->name != NULL; spec++) {
+        char *member = (char *)config + spec->offset;
+        char *member2 = (char *)config2 + spec->offset;
+        switch (spec->type) {
+        case PyConfig_MEMBER_INT:
+        case PyConfig_MEMBER_UINT:
+        {
+            *(int*)member = *(int*)member2;
+            break;
+        }
+        case PyConfig_MEMBER_ULONG:
+        {
+            *(unsigned long*)member = *(unsigned long*)member2;
+            break;
+        }
+        case PyConfig_MEMBER_WSTR:
+        case PyConfig_MEMBER_WSTR_OPT:
+        {
+            const wchar_t *str = *(const wchar_t**)member2;
+            status = PyConfig_SetString(config, (wchar_t**)member, str);
+            if (_PyStatus_EXCEPTION(status)) {
+                return status;
+            }
+            break;
+        }
+        case PyConfig_MEMBER_WSTR_LIST:
+        {
+            if (_PyWideStringList_Copy((PyWideStringList*)member,
+                                       (const PyWideStringList*)member2) < 0) {
+                return _PyStatus_NO_MEMORY();
+            }
+            break;
+        }
+        default:
+            Py_UNREACHABLE();
+        }
+    }
     return _PyStatus_OK();
 }
 
@@ -1042,118 +1051,69 @@ _PyConfig_AsDict(const PyConfig *config)
         return NULL;
     }
 
-#define SET_ITEM(KEY, EXPR) \
-        do { \
-            PyObject *obj = (EXPR); \
-            if (obj == NULL) { \
-                goto fail; \
-            } \
-            int res = PyDict_SetItemString(dict, (KEY), obj); \
-            Py_DECREF(obj); \
-            if (res < 0) { \
-                goto fail; \
-            } \
-        } while (0)
-#define SET_ITEM_INT(ATTR) \
-    SET_ITEM(#ATTR, PyLong_FromLong(config->ATTR))
-#define SET_ITEM_UINT(ATTR) \
-    SET_ITEM(#ATTR, PyLong_FromUnsignedLong(config->ATTR))
-#define FROM_WSTRING(STR) \
-    ((STR != NULL) ? \
-        PyUnicode_FromWideChar(STR, -1) \
-        : Py_NewRef(Py_None))
-#define SET_ITEM_WSTR(ATTR) \
-    SET_ITEM(#ATTR, FROM_WSTRING(config->ATTR))
-#define SET_ITEM_WSTRLIST(LIST) \
-    SET_ITEM(#LIST, _PyWideStringList_AsList(&config->LIST))
-
-    SET_ITEM_INT(_config_init);
-    SET_ITEM_INT(isolated);
-    SET_ITEM_INT(use_environment);
-    SET_ITEM_INT(dev_mode);
-    SET_ITEM_INT(install_signal_handlers);
-    SET_ITEM_INT(use_hash_seed);
-    SET_ITEM_UINT(hash_seed);
-    SET_ITEM_INT(faulthandler);
-    SET_ITEM_INT(tracemalloc);
-    SET_ITEM_INT(perf_profiling);
-    SET_ITEM_INT(import_time);
-    SET_ITEM_INT(code_debug_ranges);
-    SET_ITEM_INT(show_ref_count);
-    SET_ITEM_INT(dump_refs);
-    SET_ITEM_INT(malloc_stats);
-    SET_ITEM_WSTR(filesystem_encoding);
-    SET_ITEM_WSTR(filesystem_errors);
-    SET_ITEM_WSTR(pycache_prefix);
-    SET_ITEM_WSTR(program_name);
-    SET_ITEM_INT(parse_argv);
-    SET_ITEM_WSTRLIST(argv);
-    SET_ITEM_WSTRLIST(xoptions);
-    SET_ITEM_WSTRLIST(warnoptions);
-    SET_ITEM_WSTR(pythonpath_env);
-    SET_ITEM_WSTR(home);
-    SET_ITEM_INT(module_search_paths_set);
-    SET_ITEM_WSTRLIST(module_search_paths);
-    SET_ITEM_WSTR(stdlib_dir);
-    SET_ITEM_WSTR(executable);
-    SET_ITEM_WSTR(base_executable);
-    SET_ITEM_WSTR(prefix);
-    SET_ITEM_WSTR(base_prefix);
-    SET_ITEM_WSTR(exec_prefix);
-    SET_ITEM_WSTR(base_exec_prefix);
-    SET_ITEM_WSTR(platlibdir);
-    SET_ITEM_INT(site_import);
-    SET_ITEM_INT(bytes_warning);
-    SET_ITEM_INT(warn_default_encoding);
-    SET_ITEM_INT(inspect);
-    SET_ITEM_INT(interactive);
-    SET_ITEM_INT(optimization_level);
-    SET_ITEM_INT(parser_debug);
-    SET_ITEM_INT(write_bytecode);
-    SET_ITEM_INT(verbose);
-    SET_ITEM_INT(quiet);
-    SET_ITEM_INT(user_site_directory);
-    SET_ITEM_INT(configure_c_stdio);
-    SET_ITEM_INT(buffered_stdio);
-    SET_ITEM_WSTR(stdio_encoding);
-    SET_ITEM_WSTR(stdio_errors);
-#ifdef MS_WINDOWS
-    SET_ITEM_INT(legacy_windows_stdio);
-#endif
-    SET_ITEM_INT(skip_source_first_line);
-    SET_ITEM_WSTR(run_command);
-    SET_ITEM_WSTR(run_module);
-    SET_ITEM_WSTR(run_filename);
-    SET_ITEM_INT(_install_importlib);
-    SET_ITEM_WSTR(check_hash_pycs_mode);
-    SET_ITEM_INT(pathconfig_warnings);
-    SET_ITEM_INT(_init_main);
-    SET_ITEM_WSTRLIST(orig_argv);
-    SET_ITEM_INT(use_frozen_modules);
-    SET_ITEM_INT(safe_path);
-    SET_ITEM_INT(_is_python_build);
-    SET_ITEM_INT(int_max_str_digits);
+    const PyConfigSpec *spec = PYCONFIG_SPEC;
+    for (; spec->name != NULL; spec++) {
+        char *member = (char *)config + spec->offset;
+        PyObject *obj;
+        switch (spec->type) {
+        case PyConfig_MEMBER_INT:
+        case PyConfig_MEMBER_UINT:
+        {
+            int value = *(int*)member;
+            obj = PyLong_FromLong(value);
+            break;
+        }
+        case PyConfig_MEMBER_ULONG:
+        {
+            unsigned long value = *(unsigned long*)member;
+            obj = PyLong_FromUnsignedLong(value);
+            break;
+        }
+        case PyConfig_MEMBER_WSTR:
+        case PyConfig_MEMBER_WSTR_OPT:
+        {
+            const wchar_t *wstr = *(const wchar_t**)member;
+            if (wstr != NULL) {
+                obj = PyUnicode_FromWideChar(wstr, -1);
+            }
+            else {
+                obj = Py_NewRef(Py_None);
+            }
+            break;
+        }
+        case PyConfig_MEMBER_WSTR_LIST:
+        {
+            const PyWideStringList *list = (const PyWideStringList*)member;
+            obj = _PyWideStringList_AsList(list);
+            break;
+        }
+        default:
+            Py_UNREACHABLE();
+        }
 
+        if (obj == NULL) {
+            Py_DECREF(dict);
+            return NULL;
+        }
+        int res = PyDict_SetItemString(dict, spec->name, obj);
+        Py_DECREF(obj);
+        if (res < 0) {
+            Py_DECREF(dict);
+            return NULL;
+        }
+    }
     return dict;
-
-fail:
-    Py_DECREF(dict);
-    return NULL;
-
-#undef FROM_WSTRING
-#undef SET_ITEM
-#undef SET_ITEM_INT
-#undef SET_ITEM_UINT
-#undef SET_ITEM_WSTR
-#undef SET_ITEM_WSTRLIST
 }
 
 
 static PyObject*
 config_dict_get(PyObject *dict, const char *name)
 {
-    PyObject *item = _PyDict_GetItemStringWithError(dict, name);
-    if (item == NULL && !PyErr_Occurred()) {
+    PyObject *item;
+    if (PyDict_GetItemStringRef(dict, name, &item) < 0) {
+        return NULL;
+    }
+    if (item == NULL) {
         PyErr_Format(PyExc_ValueError, "missing config key: %s", name);
         return NULL;
     }
@@ -1182,7 +1142,8 @@ config_dict_get_int(PyObject *dict, const char *name, int *result)
     if (item == NULL) {
         return -1;
     }
-    int value = _PyLong_AsInt(item);
+    int value = PyLong_AsInt(item);
+    Py_DECREF(item);
     if (value == -1 && PyErr_Occurred()) {
         if (PyErr_ExceptionMatches(PyExc_TypeError)) {
             config_dict_invalid_type(name);
@@ -1205,6 +1166,7 @@ config_dict_get_ulong(PyObject *dict, const char *name, unsigned long *result)
         return -1;
     }
     unsigned long value = PyLong_AsUnsignedLong(item);
+    Py_DECREF(item);
     if (value == (unsigned long)-1 && PyErr_Occurred()) {
         if (PyErr_ExceptionMatches(PyExc_TypeError)) {
             config_dict_invalid_type(name);
@@ -1227,27 +1189,33 @@ config_dict_get_wstr(PyObject *dict, const char *name, PyConfig *config,
     if (item == NULL) {
         return -1;
     }
+
     PyStatus status;
     if (item == Py_None) {
         status = PyConfig_SetString(config, result, NULL);
     }
     else if (!PyUnicode_Check(item)) {
         config_dict_invalid_type(name);
-        return -1;
+        goto error;
     }
     else {
         wchar_t *wstr = PyUnicode_AsWideCharString(item, NULL);
         if (wstr == NULL) {
-            return -1;
+            goto error;
         }
         status = PyConfig_SetString(config, result, wstr);
         PyMem_Free(wstr);
     }
     if (_PyStatus_EXCEPTION(status)) {
         PyErr_NoMemory();
-        return -1;
+        goto error;
     }
+    Py_DECREF(item);
     return 0;
+
+error:
+    Py_DECREF(item);
+    return -1;
 }
 
 
@@ -1261,6 +1229,7 @@ config_dict_get_wstrlist(PyObject *dict, const char *name, PyConfig *config,
     }
 
     if (!PyList_CheckExact(list)) {
+        Py_DECREF(list);
         config_dict_invalid_type(name);
         return -1;
     }
@@ -1294,10 +1263,12 @@ config_dict_get_wstrlist(PyObject *dict, const char *name, PyConfig *config,
         goto error;
     }
     _PyWideStringList_Clear(&wstrlist);
+    Py_DECREF(list);
     return 0;
 
 error:
     _PyWideStringList_Clear(&wstrlist);
+    Py_DECREF(list);
     return -1;
 }
 
@@ -1310,128 +1281,81 @@ _PyConfig_FromDict(PyConfig *config, PyObject *dict)
         return -1;
     }
 
-#define CHECK_VALUE(NAME, TEST) \
-    if (!(TEST)) { \
-        config_dict_invalid_value(NAME); \
-        return -1; \
+    const PyConfigSpec *spec = PYCONFIG_SPEC;
+    for (; spec->name != NULL; spec++) {
+        char *member = (char *)config + spec->offset;
+        switch (spec->type) {
+        case PyConfig_MEMBER_INT:
+            if (config_dict_get_int(dict, spec->name, (int*)member) < 0) {
+                return -1;
+            }
+            break;
+        case PyConfig_MEMBER_UINT:
+        {
+            int value;
+            if (config_dict_get_int(dict, spec->name, &value) < 0) {
+                return -1;
+            }
+            if (value < 0) {
+                config_dict_invalid_value(spec->name);
+                return -1;
+            }
+            *(int*)member = value;
+            break;
+        }
+        case PyConfig_MEMBER_ULONG:
+        {
+            if (config_dict_get_ulong(dict, spec->name,
+                                      (unsigned long*)member) < 0) {
+                return -1;
+            }
+            break;
+        }
+        case PyConfig_MEMBER_WSTR:
+        {
+            wchar_t **wstr = (wchar_t**)member;
+            if (config_dict_get_wstr(dict, spec->name, config, wstr) < 0) {
+                return -1;
+            }
+            if (*wstr == NULL) {
+                config_dict_invalid_value(spec->name);
+                return -1;
+            }
+            break;
+        }
+        case PyConfig_MEMBER_WSTR_OPT:
+        {
+            wchar_t **wstr = (wchar_t**)member;
+            if (config_dict_get_wstr(dict, spec->name, config, wstr) < 0) {
+                return -1;
+            }
+            break;
+        }
+        case PyConfig_MEMBER_WSTR_LIST:
+        {
+            if (config_dict_get_wstrlist(dict, spec->name, config,
+                                         (PyWideStringList*)member) < 0) {
+                return -1;
+            }
+            break;
+        }
+        default:
+            Py_UNREACHABLE();
+        }
     }
-#define GET_UINT(KEY) \
-    do { \
-        if (config_dict_get_int(dict, #KEY, &config->KEY) < 0) { \
-            return -1; \
-        } \
-        CHECK_VALUE(#KEY, config->KEY >= 0); \
-    } while (0)
-#define GET_INT(KEY) \
-    do { \
-        if (config_dict_get_int(dict, #KEY, &config->KEY) < 0) { \
-            return -1; \
-        } \
-    } while (0)
-#define GET_WSTR(KEY) \
-    do { \
-        if (config_dict_get_wstr(dict, #KEY, config, &config->KEY) < 0) { \
-            return -1; \
-        } \
-        CHECK_VALUE(#KEY, config->KEY != NULL); \
-    } while (0)
-#define GET_WSTR_OPT(KEY) \
-    do { \
-        if (config_dict_get_wstr(dict, #KEY, config, &config->KEY) < 0) { \
-            return -1; \
-        } \
-    } while (0)
-#define GET_WSTRLIST(KEY) \
-    do { \
-        if (config_dict_get_wstrlist(dict, #KEY, config, &config->KEY) < 0) { \
-            return -1; \
-        } \
-    } while (0)
 
-    GET_UINT(_config_init);
-    CHECK_VALUE("_config_init",
-                config->_config_init == _PyConfig_INIT_COMPAT
-                || config->_config_init == _PyConfig_INIT_PYTHON
-                || config->_config_init == _PyConfig_INIT_ISOLATED);
-    GET_UINT(isolated);
-    GET_UINT(use_environment);
-    GET_UINT(dev_mode);
-    GET_UINT(install_signal_handlers);
-    GET_UINT(use_hash_seed);
-    if (config_dict_get_ulong(dict, "hash_seed", &config->hash_seed) < 0) {
+    if (!(config->_config_init == _PyConfig_INIT_COMPAT
+          || config->_config_init == _PyConfig_INIT_PYTHON
+          || config->_config_init == _PyConfig_INIT_ISOLATED))
+    {
+        config_dict_invalid_value("_config_init");
+        return -1;
+    }
+
+    if (config->hash_seed > MAX_HASH_SEED) {
+        config_dict_invalid_value("hash_seed");
         return -1;
     }
-    CHECK_VALUE("hash_seed", config->hash_seed <= MAX_HASH_SEED);
-    GET_UINT(faulthandler);
-    GET_UINT(tracemalloc);
-    GET_UINT(perf_profiling);
-    GET_UINT(import_time);
-    GET_UINT(code_debug_ranges);
-    GET_UINT(show_ref_count);
-    GET_UINT(dump_refs);
-    GET_UINT(malloc_stats);
-    GET_WSTR(filesystem_encoding);
-    GET_WSTR(filesystem_errors);
-    GET_WSTR_OPT(pycache_prefix);
-    GET_UINT(parse_argv);
-    GET_WSTRLIST(orig_argv);
-    GET_WSTRLIST(argv);
-    GET_WSTRLIST(xoptions);
-    GET_WSTRLIST(warnoptions);
-    GET_UINT(site_import);
-    GET_UINT(bytes_warning);
-    GET_UINT(warn_default_encoding);
-    GET_UINT(inspect);
-    GET_UINT(interactive);
-    GET_UINT(optimization_level);
-    GET_UINT(parser_debug);
-    GET_UINT(write_bytecode);
-    GET_UINT(verbose);
-    GET_UINT(quiet);
-    GET_UINT(user_site_directory);
-    GET_UINT(configure_c_stdio);
-    GET_UINT(buffered_stdio);
-    GET_WSTR(stdio_encoding);
-    GET_WSTR(stdio_errors);
-#ifdef MS_WINDOWS
-    GET_UINT(legacy_windows_stdio);
-#endif
-    GET_WSTR(check_hash_pycs_mode);
-
-    GET_UINT(pathconfig_warnings);
-    GET_WSTR(program_name);
-    GET_WSTR_OPT(pythonpath_env);
-    GET_WSTR_OPT(home);
-    GET_WSTR(platlibdir);
-
-    // Path configuration output
-    GET_UINT(module_search_paths_set);
-    GET_WSTRLIST(module_search_paths);
-    GET_WSTR_OPT(stdlib_dir);
-    GET_WSTR_OPT(executable);
-    GET_WSTR_OPT(base_executable);
-    GET_WSTR_OPT(prefix);
-    GET_WSTR_OPT(base_prefix);
-    GET_WSTR_OPT(exec_prefix);
-    GET_WSTR_OPT(base_exec_prefix);
-
-    GET_UINT(skip_source_first_line);
-    GET_WSTR_OPT(run_command);
-    GET_WSTR_OPT(run_module);
-    GET_WSTR_OPT(run_filename);
-
-    GET_UINT(_install_importlib);
-    GET_UINT(_init_main);
-    GET_UINT(use_frozen_modules);
-    GET_UINT(safe_path);
-    GET_UINT(_is_python_build);
-    GET_INT(int_max_str_digits);
-
-#undef CHECK_VALUE
-#undef GET_UINT
-#undef GET_INT
-#undef GET_WSTR
-#undef GET_WSTR_OPT
     return 0;
 }
 
@@ -1722,6 +1646,45 @@ config_read_env_vars(PyConfig *config)
     return _PyStatus_OK();
 }
 
+static PyStatus
+config_init_cpu_count(PyConfig *config)
+{
+    const char *env = config_get_env(config, "PYTHON_CPU_COUNT");
+    if (env) {
+        int cpu_count = -1;
+        if (strcmp(env, "default") == 0) {
+            cpu_count = -1;
+        }
+        else if (_Py_str_to_int(env, &cpu_count) < 0 || cpu_count < 1) {
+            goto error;
+        }
+        config->cpu_count = cpu_count;
+    }
+
+    const wchar_t *xoption = config_get_xoption(config, L"cpu_count");
+    if (xoption) {
+        int cpu_count = -1;
+        const wchar_t *sep = wcschr(xoption, L'=');
+        if (sep) {
+            if (wcscmp(sep + 1, L"default") == 0) {
+                cpu_count = -1;
+            }
+            else if (config_wstr_to_int(sep + 1, &cpu_count) < 0 || cpu_count < 1) {
+                goto error;
+            }
+        }
+        else {
+            goto error;
+        }
+        config->cpu_count = cpu_count;
+    }
+    return _PyStatus_OK();
+
+error:
+    return _PyStatus_ERR("-X cpu_count=n option: n is missing or an invalid number, "
+                         "n must be greater than 0");
+}
+
 static PyStatus
 config_init_perf_profiling(PyConfig *config)
 {
@@ -1862,6 +1825,36 @@ config_init_pycache_prefix(PyConfig *config)
 }
 
 
+#ifdef Py_DEBUG
+static PyStatus
+config_init_run_presite(PyConfig *config)
+{
+    assert(config->run_presite == NULL);
+
+    const wchar_t *xoption = config_get_xoption(config, L"presite");
+    if (xoption) {
+        const wchar_t *sep = wcschr(xoption, L'=');
+        if (sep && wcslen(sep) > 1) {
+            config->run_presite = _PyMem_RawWcsdup(sep + 1);
+            if (config->run_presite == NULL) {
+                return _PyStatus_NO_MEMORY();
+            }
+        }
+        else {
+            // PYTHON_PRESITE env var ignored
+            // if "-X presite=" option is used
+            config->run_presite = NULL;
+        }
+        return _PyStatus_OK();
+    }
+
+    return CONFIG_GET_ENV_DUP(config, &config->run_presite,
+                              L"PYTHON_PRESITE",
+                              "PYTHON_PRESITE");
+}
+#endif
+
+
 static PyStatus
 config_read_complex_options(PyConfig *config)
 {
@@ -1904,12 +1897,29 @@ config_read_complex_options(PyConfig *config)
         }
     }
 
+    if (config->cpu_count < 0) {
+        status = config_init_cpu_count(config);
+        if (_PyStatus_EXCEPTION(status)) {
+            return status;
+        }
+    }
+
     if (config->pycache_prefix == NULL) {
         status = config_init_pycache_prefix(config);
         if (_PyStatus_EXCEPTION(status)) {
             return status;
         }
     }
+
+#ifdef Py_DEBUG
+    if (config->run_presite == NULL) {
+        status = config_init_run_presite(config);
+        if (_PyStatus_EXCEPTION(status)) {
+            return status;
+        }
+    }
+#endif
+
     return _PyStatus_OK();
 }
 
@@ -1973,26 +1983,6 @@ config_init_stdio_encoding(PyConfig *config,
 {
     PyStatus status;
 
-    /* If Py_SetStandardStreamEncoding() has been called, use its
-        arguments if they are not NULL. */
-    if (config->stdio_encoding == NULL && _Py_StandardStreamEncoding != NULL) {
-        status = CONFIG_SET_BYTES_STR(config, &config->stdio_encoding,
-                                      _Py_StandardStreamEncoding,
-                                      "_Py_StandardStreamEncoding");
-        if (_PyStatus_EXCEPTION(status)) {
-            return status;
-        }
-    }
-
-    if (config->stdio_errors == NULL && _Py_StandardStreamErrors != NULL) {
-        status = CONFIG_SET_BYTES_STR(config, &config->stdio_errors,
-                                      _Py_StandardStreamErrors,
-                                      "_Py_StandardStreamErrors");
-        if (_PyStatus_EXCEPTION(status)) {
-            return status;
-        }
-    }
-
     // Exit if encoding and errors are defined
     if (config->stdio_encoding != NULL && config->stdio_errors != NULL) {
         return _PyStatus_OK();
@@ -2147,6 +2137,19 @@ config_init_import(PyConfig *config, int compute_path_config)
         return status;
     }
 
+    const char *env = config_get_env(config, "PYTHON_FROZEN_MODULES");
+    if (env == NULL) {
+    }
+    else if (strcmp(env, "on") == 0) {
+        config->use_frozen_modules = 1;
+    }
+    else if (strcmp(env, "off") == 0) {
+        config->use_frozen_modules = 0;
+    } else {
+        return PyStatus_Error("bad value for PYTHON_FROZEN_MODULES "
+                              "(expected \"on\" or \"off\")");
+    }
+
     /* -X frozen_modules=[on|off] */
     const wchar_t *value = config_get_xoption_value(config, L"frozen_modules");
     if (value == NULL) {
@@ -2197,7 +2200,13 @@ config_read(PyConfig *config, int compute_path_config)
 
 #ifdef Py_STATS
     if (config_get_xoption(config, L"pystats")) {
-        _py_stats = &_py_stats_struct;
+        config->_pystats = 1;
+    }
+    else if (config_get_env(config, "PYTHONSTATS")) {
+        config->_pystats = 1;
+    }
+    if (config->_pystats < 0) {
+        config->_pystats = 0;
     }
 #endif
 
@@ -2335,6 +2344,13 @@ _PyConfig_Write(const PyConfig *config, _PyRuntimeState *runtime)
     {
         return _PyStatus_NO_MEMORY();
     }
+
+#ifdef Py_STATS
+    if (config->_pystats) {
+        _Py_StatsOn();
+    }
+#endif
+
     return _PyStatus_OK();
 }
 
@@ -3165,6 +3181,7 @@ _Py_DumpPathConfig(PyThreadState *tstate)
     PySys_WriteStderr("  import site = %i\n", config->site_import);
     PySys_WriteStderr("  is in build tree = %i\n", config->_is_python_build);
     DUMP_CONFIG("stdlib dir", stdlib_dir);
+    DUMP_CONFIG("sys.path[0]", sys_path_0);
 #undef DUMP_CONFIG
 
 #define DUMP_SYS(NAME) \
diff --git a/Python/instrumentation.c b/Python/instrumentation.c
index 9152744d7c2c1c..35b0e7a8f35c56 100644
--- a/Python/instrumentation.c
+++ b/Python/instrumentation.c
@@ -1,30 +1,27 @@
+#include "Python.h"
 
+#include "opcode_ids.h"
 
-#include "Python.h"
+#include "pycore_bitutils.h"      // _Py_popcount32
 #include "pycore_call.h"
+#include "pycore_ceval.h"         // _PY_EVAL_EVENTS_BITS
+#include "pycore_code.h"          // _PyCode_Clear_Executors()
 #include "pycore_frame.h"
 #include "pycore_interp.h"
 #include "pycore_long.h"
+#include "pycore_modsupport.h"    // _PyModule_CreateInitialized()
 #include "pycore_namespace.h"
 #include "pycore_object.h"
-#include "pycore_opcode.h"
+#include "pycore_opcode_metadata.h" // IS_VALID_OPCODE, _PyOpcode_Caches
 #include "pycore_pyerrors.h"
-#include "pycore_pystate.h"
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
 
 /* Uncomment this to dump debugging output when assertions fail */
 // #define INSTRUMENT_DEBUG 1
 
-PyObject _PyInstrumentation_DISABLE =
-{
-    .ob_refcnt = _Py_IMMORTAL_REFCNT,
-    .ob_type = &PyBaseObject_Type
-};
+PyObject _PyInstrumentation_DISABLE = _PyObject_HEAD_INIT(&PyBaseObject_Type);
 
-PyObject _PyInstrumentation_MISSING =
-{
-    .ob_refcnt = _Py_IMMORTAL_REFCNT,
-    .ob_type = &PyBaseObject_Type
-};
+PyObject _PyInstrumentation_MISSING = _PyObject_HEAD_INIT(&PyBaseObject_Type);
 
 static const int8_t EVENT_FOR_OPCODE[256] = {
     [RETURN_CONST] = PY_MONITORING_EVENT_PY_RETURN,
@@ -33,8 +30,12 @@ static const int8_t EVENT_FOR_OPCODE[256] = {
     [INSTRUMENTED_RETURN_VALUE] = PY_MONITORING_EVENT_PY_RETURN,
     [CALL] = PY_MONITORING_EVENT_CALL,
     [INSTRUMENTED_CALL] = PY_MONITORING_EVENT_CALL,
+    [CALL_KW] = PY_MONITORING_EVENT_CALL,
+    [INSTRUMENTED_CALL_KW] = PY_MONITORING_EVENT_CALL,
     [CALL_FUNCTION_EX] = PY_MONITORING_EVENT_CALL,
     [INSTRUMENTED_CALL_FUNCTION_EX] = PY_MONITORING_EVENT_CALL,
+    [LOAD_SUPER_ATTR] = PY_MONITORING_EVENT_CALL,
+    [INSTRUMENTED_LOAD_SUPER_ATTR] = PY_MONITORING_EVENT_CALL,
     [RESUME] = -1,
     [YIELD_VALUE] = PY_MONITORING_EVENT_PY_YIELD,
     [INSTRUMENTED_YIELD_VALUE] = PY_MONITORING_EVENT_PY_YIELD,
@@ -63,6 +64,7 @@ static const uint8_t DE_INSTRUMENT[256] = {
     [INSTRUMENTED_RETURN_VALUE] = RETURN_VALUE,
     [INSTRUMENTED_RETURN_CONST] = RETURN_CONST,
     [INSTRUMENTED_CALL] = CALL,
+    [INSTRUMENTED_CALL_KW] = CALL_KW,
     [INSTRUMENTED_CALL_FUNCTION_EX] = CALL_FUNCTION_EX,
     [INSTRUMENTED_YIELD_VALUE] = YIELD_VALUE,
     [INSTRUMENTED_JUMP_FORWARD] = JUMP_FORWARD,
@@ -74,6 +76,7 @@ static const uint8_t DE_INSTRUMENT[256] = {
     [INSTRUMENTED_FOR_ITER] = FOR_ITER,
     [INSTRUMENTED_END_FOR] = END_FOR,
     [INSTRUMENTED_END_SEND] = END_SEND,
+    [INSTRUMENTED_LOAD_SUPER_ATTR] = LOAD_SUPER_ATTR,
 };
 
 static const uint8_t INSTRUMENTED_OPCODES[256] = {
@@ -83,6 +86,8 @@ static const uint8_t INSTRUMENTED_OPCODES[256] = {
     [INSTRUMENTED_RETURN_VALUE] = INSTRUMENTED_RETURN_VALUE,
     [CALL] = INSTRUMENTED_CALL,
     [INSTRUMENTED_CALL] = INSTRUMENTED_CALL,
+    [CALL_KW] = INSTRUMENTED_CALL_KW,
+    [INSTRUMENTED_CALL_KW] = INSTRUMENTED_CALL_KW,
     [CALL_FUNCTION_EX] = INSTRUMENTED_CALL_FUNCTION_EX,
     [INSTRUMENTED_CALL_FUNCTION_EX] = INSTRUMENTED_CALL_FUNCTION_EX,
     [YIELD_VALUE] = INSTRUMENTED_YIELD_VALUE,
@@ -107,6 +112,8 @@ static const uint8_t INSTRUMENTED_OPCODES[256] = {
     [INSTRUMENTED_END_SEND] = INSTRUMENTED_END_SEND,
     [FOR_ITER] = INSTRUMENTED_FOR_ITER,
     [INSTRUMENTED_FOR_ITER] = INSTRUMENTED_FOR_ITER,
+    [LOAD_SUPER_ATTR] = INSTRUMENTED_LOAD_SUPER_ATTR,
+    [INSTRUMENTED_LOAD_SUPER_ATTR] = INSTRUMENTED_LOAD_SUPER_ATTR,
 
     [INSTRUMENTED_LINE] = INSTRUMENTED_LINE,
     [INSTRUMENTED_INSTRUCTION] = INSTRUMENTED_INSTRUCTION,
@@ -116,7 +123,7 @@ static inline bool
 opcode_has_event(int opcode)
 {
     return (
-        opcode < INSTRUMENTED_LINE &&
+        opcode != INSTRUMENTED_LINE &&
         INSTRUMENTED_OPCODES[opcode] > 0
     );
 }
@@ -131,9 +138,9 @@ is_instrumented(int opcode)
 
 #ifndef NDEBUG
 static inline bool
-monitors_equals(_Py_Monitors a, _Py_Monitors b)
+monitors_equals(_Py_LocalMonitors a, _Py_LocalMonitors b)
 {
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    for (int i = 0; i < _PY_MONITORING_LOCAL_EVENTS; i++) {
         if (a.tools[i] != b.tools[i]) {
             return false;
         }
@@ -142,42 +149,47 @@ monitors_equals(_Py_Monitors a, _Py_Monitors b)
 }
 #endif
 
-static inline _Py_Monitors
-monitors_sub(_Py_Monitors a, _Py_Monitors b)
+static inline _Py_LocalMonitors
+monitors_sub(_Py_LocalMonitors a, _Py_LocalMonitors b)
 {
-    _Py_Monitors res;
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    _Py_LocalMonitors res;
+    for (int i = 0; i < _PY_MONITORING_LOCAL_EVENTS; i++) {
         res.tools[i] = a.tools[i] & ~b.tools[i];
     }
     return res;
 }
 
 #ifndef NDEBUG
-static inline _Py_Monitors
-monitors_and(_Py_Monitors a, _Py_Monitors b)
+static inline _Py_LocalMonitors
+monitors_and(_Py_LocalMonitors a, _Py_LocalMonitors b)
 {
-    _Py_Monitors res;
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    _Py_LocalMonitors res;
+    for (int i = 0; i < _PY_MONITORING_LOCAL_EVENTS; i++) {
         res.tools[i] = a.tools[i] & b.tools[i];
     }
     return res;
 }
 #endif
 
-static inline _Py_Monitors
-monitors_or(_Py_Monitors a, _Py_Monitors b)
+/* The union of the *local* events in a and b.
+ * Global events like RAISE are ignored.
+ * Used for instrumentation, as only local
+ * events get instrumented.
+ */
+static inline _Py_LocalMonitors
+local_union(_Py_GlobalMonitors a, _Py_LocalMonitors b)
 {
-    _Py_Monitors res;
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    _Py_LocalMonitors res;
+    for (int i = 0; i < _PY_MONITORING_LOCAL_EVENTS; i++) {
         res.tools[i] = a.tools[i] | b.tools[i];
     }
     return res;
 }
 
 static inline bool
-monitors_are_empty(_Py_Monitors m)
+monitors_are_empty(_Py_LocalMonitors m)
 {
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    for (int i = 0; i < _PY_MONITORING_LOCAL_EVENTS; i++) {
         if (m.tools[i]) {
             return false;
         }
@@ -186,9 +198,9 @@ monitors_are_empty(_Py_Monitors m)
 }
 
 static inline bool
-multiple_tools(_Py_Monitors *m)
+multiple_tools(_Py_LocalMonitors *m)
 {
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    for (int i = 0; i < _PY_MONITORING_LOCAL_EVENTS; i++) {
         if (_Py_popcount32(m->tools[i]) > 1) {
             return true;
         }
@@ -197,10 +209,22 @@ multiple_tools(_Py_Monitors *m)
 }
 
 static inline _PyMonitoringEventSet
-get_events(_Py_Monitors *m, int tool_id)
+get_local_events(_Py_LocalMonitors *m, int tool_id)
+{
+    _PyMonitoringEventSet result = 0;
+    for (int e = 0; e < _PY_MONITORING_LOCAL_EVENTS; e++) {
+        if ((m->tools[e] >> tool_id) & 1) {
+            result |= (1 << e);
+        }
+    }
+    return result;
+}
+
+static inline _PyMonitoringEventSet
+get_events(_Py_GlobalMonitors *m, int tool_id)
 {
     _PyMonitoringEventSet result = 0;
-    for (int e = 0; e < PY_MONITORING_UNGROUPED_EVENTS; e++) {
+    for (int e = 0; e < _PY_MONITORING_UNGROUPED_EVENTS; e++) {
         if ((m->tools[e] >> tool_id) & 1) {
             result |= (1 << e);
         }
@@ -251,8 +275,8 @@ compute_line(PyCodeObject *code, int offset, int8_t line_delta)
     return PyCode_Addr2Line(code, offset * sizeof(_Py_CODEUNIT));
 }
 
-static int
-instruction_length(PyCodeObject *code, int offset)
+int
+_PyInstruction_GetLength(PyCodeObject *code, int offset)
 {
     int opcode = _PyCode_CODE(code)[offset].op.code;
     assert(opcode != 0);
@@ -272,6 +296,13 @@ instruction_length(PyCodeObject *code, int offset)
     }
     assert(opcode != 0);
     assert(!is_instrumented(opcode));
+    if (opcode == ENTER_EXECUTOR) {
+        int exec_index = _PyCode_CODE(code)[offset].op.arg;
+        _PyExecutorObject *exec = code->co_executors->executors[exec_index];
+        opcode = _PyOpcode_Deopt[exec->vm_data.opcode];
+
+    }
+    assert(opcode != ENTER_EXECUTOR);
     assert(opcode == _PyOpcode_Deopt[opcode]);
     return 1 + _PyOpcode_Caches[opcode];
 }
@@ -332,45 +363,21 @@ dump_instrumentation_data_per_instruction(PyCodeObject *code, _PyCoMonitoringDat
 }
 
 static void
-dump_monitors(const char *prefix, _Py_Monitors monitors, FILE*out)
+dump_global_monitors(const char *prefix, _Py_GlobalMonitors monitors, FILE*out)
 {
     fprintf(out, "%s monitors:\n", prefix);
-    for (int event = 0; event < PY_MONITORING_UNGROUPED_EVENTS; event++) {
+    for (int event = 0; event < _PY_MONITORING_UNGROUPED_EVENTS; event++) {
         fprintf(out, "    Event %d: Tools %x\n", event, monitors.tools[event]);
     }
 }
 
-/* Like _Py_GetBaseOpcode but without asserts.
- * Does its best to give the right answer, but won't abort
- * if something is wrong */
-static int
-get_base_opcode_best_attempt(PyCodeObject *code, int offset)
+static void
+dump_local_monitors(const char *prefix, _Py_LocalMonitors monitors, FILE*out)
 {
-    int opcode = _Py_OPCODE(_PyCode_CODE(code)[offset]);
-    if (INSTRUMENTED_OPCODES[opcode] != opcode) {
-        /* Not instrumented */
-        return _PyOpcode_Deopt[opcode] == 0 ? opcode : _PyOpcode_Deopt[opcode];
-    }
-    if (opcode == INSTRUMENTED_INSTRUCTION) {
-        if (code->_co_monitoring->per_instruction_opcodes[offset] == 0) {
-            return opcode;
-        }
-        opcode = code->_co_monitoring->per_instruction_opcodes[offset];
-    }
-    if (opcode == INSTRUMENTED_LINE) {
-        if (code->_co_monitoring->lines[offset].original_opcode == 0) {
-            return opcode;
-        }
-        opcode = code->_co_monitoring->lines[offset].original_opcode;
-    }
-    int deinstrumented = DE_INSTRUMENT[opcode];
-    if (deinstrumented) {
-        return deinstrumented;
-    }
-    if (_PyOpcode_Deopt[opcode] == 0) {
-        return opcode;
+    fprintf(out, "%s monitors:\n", prefix);
+    for (int event = 0; event < _PY_MONITORING_LOCAL_EVENTS; event++) {
+        fprintf(out, "    Event %d: Tools %x\n", event, monitors.tools[event]);
     }
-    return _PyOpcode_Deopt[opcode];
 }
 
 /* No error checking -- Don't use this for anything but experimental debugging */
@@ -385,12 +392,12 @@ dump_instrumentation_data(PyCodeObject *code, int star, FILE*out)
         fprintf(out, "NULL\n");
         return;
     }
-    dump_monitors("Global", PyInterpreterState_Get()->monitors, out);
-    dump_monitors("Code", data->local_monitors, out);
-    dump_monitors("Active", data->active_monitors, out);
+    dump_global_monitors("Global", _PyInterpreterState_GET()->monitors, out);
+    dump_local_monitors("Code", data->local_monitors, out);
+    dump_local_monitors("Active", data->active_monitors, out);
     int code_len = (int)Py_SIZE(code);
     bool starred = false;
-    for (int i = 0; i < code_len; i += instruction_length(code, i)) {
+    for (int i = 0; i < code_len; i += _PyInstruction_GetLength(code, i)) {
         _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
         int opcode = instr->op.code;
         if (i == star) {
@@ -426,11 +433,13 @@ dump_instrumentation_data(PyCodeObject *code, int star, FILE*out)
 static bool
 valid_opcode(int opcode)
 {
-    if (opcode > 0 &&
+    if (opcode == INSTRUMENTED_LINE) {
+        return true;
+    }
+    if (IS_VALID_OPCODE(opcode) &&
+        opcode != CACHE &&
         opcode != RESERVED &&
-        opcode < 255 &&
-        _PyOpcode_OpName[opcode] &&
-        _PyOpcode_OpName[opcode][0] != '<')
+        opcode < 255)
     {
        return true;
     }
@@ -444,18 +453,23 @@ sanity_check_instrumentation(PyCodeObject *code)
     if (data == NULL) {
         return;
     }
-    _Py_Monitors active_monitors = PyInterpreterState_Get()->monitors;
+    _Py_GlobalMonitors global_monitors = _PyInterpreterState_GET()->monitors;
+    _Py_LocalMonitors active_monitors;
     if (code->_co_monitoring) {
-        _Py_Monitors local_monitors = code->_co_monitoring->local_monitors;
-        active_monitors = monitors_or(active_monitors, local_monitors);
+        _Py_LocalMonitors local_monitors = code->_co_monitoring->local_monitors;
+        active_monitors = local_union(global_monitors, local_monitors);
+    }
+    else {
+        _Py_LocalMonitors empty = (_Py_LocalMonitors) { 0 };
+        active_monitors = local_union(global_monitors, empty);
     }
     assert(monitors_equals(
         code->_co_monitoring->active_monitors,
-        active_monitors)
-    );
+        active_monitors));
     int code_len = (int)Py_SIZE(code);
     for (int i = 0; i < code_len;) {
-        int opcode = _PyCode_CODE(code)[i].op.code;
+        _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
+        int opcode = instr->op.code;
         int base_opcode = _Py_GetBaseOpcode(code, i);
         CHECK(valid_opcode(opcode));
         CHECK(valid_opcode(base_opcode));
@@ -475,23 +489,30 @@ sanity_check_instrumentation(PyCodeObject *code)
             opcode = data->lines[i].original_opcode;
             CHECK(opcode != END_FOR);
             CHECK(opcode != RESUME);
+            CHECK(opcode != RESUME_CHECK);
             CHECK(opcode != INSTRUMENTED_RESUME);
             if (!is_instrumented(opcode)) {
                 CHECK(_PyOpcode_Deopt[opcode] == opcode);
             }
             CHECK(opcode != INSTRUMENTED_LINE);
         }
-        else if (data->lines && !is_instrumented(opcode)) {
-            CHECK(data->lines[i].original_opcode == 0 ||
-                  data->lines[i].original_opcode == base_opcode ||
-                  DE_INSTRUMENT[data->lines[i].original_opcode] == base_opcode);
+        else if (data->lines) {
+            /* If original_opcode is INSTRUMENTED_INSTRUCTION
+             * *and* we are executing a INSTRUMENTED_LINE instruction
+             * that has de-instrumented itself, then we will execute
+             * an invalid INSTRUMENTED_INSTRUCTION */
+            CHECK(data->lines[i].original_opcode != INSTRUMENTED_INSTRUCTION);
+        }
+        if (opcode == INSTRUMENTED_INSTRUCTION) {
+            CHECK(data->per_instruction_opcodes[i] != 0);
+            opcode = data->per_instruction_opcodes[i];
         }
         if (is_instrumented(opcode)) {
             CHECK(DE_INSTRUMENT[opcode] == base_opcode);
             int event = EVENT_FOR_OPCODE[DE_INSTRUMENT[opcode]];
             if (event < 0) {
                 /* RESUME fixup */
-                event = _PyCode_CODE(code)[i].op.arg;
+                event = instr->op.arg ? 1: 0;
             }
             CHECK(active_monitors.tools[event] != 0);
         }
@@ -515,7 +536,7 @@ sanity_check_instrumentation(PyCodeObject *code)
                 CHECK(local_tools == 0xff);
             }
         }
-        i += instruction_length(code, i);
+        i += _PyInstruction_GetLength(code, i);
         assert(i <= code_len);
     }
 }
@@ -553,6 +574,7 @@ de_instrument(PyCodeObject *code, int i, int event)
     _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
     uint8_t *opcode_ptr = &instr->op.code;
     int opcode = *opcode_ptr;
+    assert(opcode != ENTER_EXECUTOR);
     if (opcode == INSTRUMENTED_LINE) {
         opcode_ptr = &code->_co_monitoring->lines[i].original_opcode;
         opcode = *opcode_ptr;
@@ -576,30 +598,30 @@ static void
 de_instrument_line(PyCodeObject *code, int i)
 {
     _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
-    uint8_t *opcode_ptr = &instr->op.code;
-    int opcode =*opcode_ptr;
+    int opcode = instr->op.code;
     if (opcode != INSTRUMENTED_LINE) {
         return;
     }
     _PyCoLineInstrumentationData *lines = &code->_co_monitoring->lines[i];
     int original_opcode = lines->original_opcode;
+    if (original_opcode == INSTRUMENTED_INSTRUCTION) {
+        lines->original_opcode = code->_co_monitoring->per_instruction_opcodes[i];
+    }
     CHECK(original_opcode != 0);
     CHECK(original_opcode == _PyOpcode_Deopt[original_opcode]);
-    *opcode_ptr = instr->op.code = original_opcode;
+    instr->op.code = original_opcode;
     if (_PyOpcode_Caches[original_opcode]) {
         instr[1].cache = adaptive_counter_warmup();
     }
-    assert(*opcode_ptr != INSTRUMENTED_LINE);
     assert(instr->op.code != INSTRUMENTED_LINE);
 }
 
-
 static void
 de_instrument_per_instruction(PyCodeObject *code, int i)
 {
     _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
     uint8_t *opcode_ptr = &instr->op.code;
-    int opcode =*opcode_ptr;
+    int opcode = *opcode_ptr;
     if (opcode == INSTRUMENTED_LINE) {
         opcode_ptr = &code->_co_monitoring->lines[i].original_opcode;
         opcode = *opcode_ptr;
@@ -610,10 +632,11 @@ de_instrument_per_instruction(PyCodeObject *code, int i)
     int original_opcode = code->_co_monitoring->per_instruction_opcodes[i];
     CHECK(original_opcode != 0);
     CHECK(original_opcode == _PyOpcode_Deopt[original_opcode]);
-    instr->op.code = original_opcode;
+    *opcode_ptr = original_opcode;
     if (_PyOpcode_Caches[original_opcode]) {
         instr[1].cache = adaptive_counter_warmup();
     }
+    assert(*opcode_ptr != INSTRUMENTED_INSTRUCTION);
     assert(instr->op.code != INSTRUMENTED_INSTRUCTION);
     /* Keep things clean for sanity check */
     code->_co_monitoring->per_instruction_opcodes[i] = 0;
@@ -634,7 +657,7 @@ instrument(PyCodeObject *code, int i)
     if (opcode == INSTRUMENTED_INSTRUCTION) {
         opcode_ptr = &code->_co_monitoring->per_instruction_opcodes[i];
         opcode = *opcode_ptr;
-        CHECK(!is_instrumented(opcode));
+        CHECK(opcode != INSTRUMENTED_INSTRUCTION && opcode != INSTRUMENTED_LINE);
         CHECK(opcode == _PyOpcode_Deopt[opcode]);
     }
     CHECK(opcode != 0);
@@ -653,7 +676,7 @@ static void
 instrument_line(PyCodeObject *code, int i)
 {
     uint8_t *opcode_ptr = &_PyCode_CODE(code)[i].op.code;
-    int opcode =*opcode_ptr;
+    int opcode = *opcode_ptr;
     if (opcode == INSTRUMENTED_LINE) {
         return;
     }
@@ -668,13 +691,14 @@ instrument_per_instruction(PyCodeObject *code, int i)
 {
     _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
     uint8_t *opcode_ptr = &instr->op.code;
-    int opcode =*opcode_ptr;
+    int opcode = *opcode_ptr;
     if (opcode == INSTRUMENTED_LINE) {
         _PyCoLineInstrumentationData *lines = &code->_co_monitoring->lines[i];
         opcode_ptr = &lines->original_opcode;
         opcode = *opcode_ptr;
     }
     if (opcode == INSTRUMENTED_INSTRUCTION) {
+        assert(code->_co_monitoring->per_instruction_opcodes[i] > 0);
         return;
     }
     CHECK(opcode != 0);
@@ -691,29 +715,13 @@ instrument_per_instruction(PyCodeObject *code, int i)
     *opcode_ptr = INSTRUMENTED_INSTRUCTION;
 }
 
-#ifndef NDEBUG
-static bool
-instruction_has_event(PyCodeObject *code, int offset)
-{
-    _Py_CODEUNIT instr = _PyCode_CODE(code)[offset];
-    int opcode = instr.op.code;
-    if (opcode == INSTRUMENTED_LINE) {
-        opcode = code->_co_monitoring->lines[offset].original_opcode;
-    }
-    if (opcode == INSTRUMENTED_INSTRUCTION) {
-        opcode = code->_co_monitoring->per_instruction_opcodes[offset];
-    }
-    return opcode_has_event(opcode);
-}
-#endif
-
 static void
 remove_tools(PyCodeObject * code, int offset, int event, int tools)
 {
     assert(event != PY_MONITORING_EVENT_LINE);
     assert(event != PY_MONITORING_EVENT_INSTRUCTION);
-    assert(event < PY_MONITORING_INSTRUMENTED_EVENTS);
-    assert(instruction_has_event(code, offset));
+    assert(PY_MONITORING_IS_INSTRUMENTED_EVENT(event));
+    assert(opcode_has_event(_Py_GetBaseOpcode(code, offset)));
     _PyCoMonitoringData *monitoring = code->_co_monitoring;
     if (monitoring && monitoring->tools) {
         monitoring->tools[offset] &= ~tools;
@@ -735,7 +743,7 @@ remove_tools(PyCodeObject * code, int offset, int event, int tools)
 static bool
 tools_is_subset_for_event(PyCodeObject * code, int event, int tools)
 {
-    int global_tools = PyInterpreterState_Get()->monitors.tools[event];
+    int global_tools = _PyInterpreterState_GET()->monitors.tools[event];
     int local_tools = code->_co_monitoring->local_monitors.tools[event];
     return tools == ((global_tools | local_tools) & tools);
 }
@@ -768,7 +776,7 @@ add_tools(PyCodeObject * code, int offset, int event, int tools)
 {
     assert(event != PY_MONITORING_EVENT_LINE);
     assert(event != PY_MONITORING_EVENT_INSTRUCTION);
-    assert(event < PY_MONITORING_INSTRUMENTED_EVENTS);
+    assert(PY_MONITORING_IS_INSTRUMENTED_EVENT(event));
     assert(code->_co_monitoring);
     if (code->_co_monitoring &&
         code->_co_monitoring->tools
@@ -880,17 +888,34 @@ static inline int most_significant_bit(uint8_t bits) {
     return MOST_SIGNIFICANT_BITS[bits];
 }
 
+static uint32_t
+global_version(PyInterpreterState *interp)
+{
+    return interp->ceval.eval_breaker & ~_PY_EVAL_EVENTS_MASK;
+}
+
+static void
+set_global_version(PyInterpreterState *interp, uint32_t version)
+{
+    assert((version & _PY_EVAL_EVENTS_MASK) == 0);
+    uintptr_t old = _Py_atomic_load_uintptr(&interp->ceval.eval_breaker);
+    intptr_t new;
+    do {
+        new = (old & _PY_EVAL_EVENTS_MASK) | version;
+    } while (!_Py_atomic_compare_exchange_uintptr(&interp->ceval.eval_breaker, &old, new));
+}
+
 static bool
 is_version_up_to_date(PyCodeObject *code, PyInterpreterState *interp)
 {
-    return interp->monitoring_version == code->_co_instrumentation_version;
+    return global_version(interp) == code->_co_instrumentation_version;
 }
 
 #ifndef NDEBUG
 static bool
 instrumentation_cross_checks(PyInterpreterState *interp, PyCodeObject *code)
 {
-    _Py_Monitors expected = monitors_or(
+    _Py_LocalMonitors expected = local_union(
         interp->monitors,
         code->_co_monitoring->local_monitors);
     return monitors_equals(code->_co_monitoring->active_monitors, expected);
@@ -898,29 +923,52 @@ instrumentation_cross_checks(PyInterpreterState *interp, PyCodeObject *code)
 #endif
 
 static inline uint8_t
-get_tools_for_instruction(PyCodeObject * code, int i, int event)
+get_tools_for_instruction(PyCodeObject *code, PyInterpreterState *interp, int i, int event)
 {
     uint8_t tools;
     assert(event != PY_MONITORING_EVENT_LINE);
     assert(event != PY_MONITORING_EVENT_INSTRUCTION);
-    assert(instrumentation_cross_checks(PyThreadState_GET()->interp, code));
-    _PyCoMonitoringData *monitoring = code->_co_monitoring;
-    if (event >= PY_MONITORING_UNGROUPED_EVENTS) {
+    if (event >= _PY_MONITORING_UNGROUPED_EVENTS) {
         assert(event == PY_MONITORING_EVENT_C_RAISE ||
                 event == PY_MONITORING_EVENT_C_RETURN);
         event = PY_MONITORING_EVENT_CALL;
     }
-    if (event < PY_MONITORING_INSTRUMENTED_EVENTS && monitoring->tools) {
-        tools = monitoring->tools[i];
+    if (PY_MONITORING_IS_INSTRUMENTED_EVENT(event)) {
+        CHECK(is_version_up_to_date(code, interp));
+        CHECK(instrumentation_cross_checks(interp, code));
+        if (code->_co_monitoring->tools) {
+            tools = code->_co_monitoring->tools[i];
+        }
+        else {
+            tools = code->_co_monitoring->active_monitors.tools[event];
+        }
     }
     else {
-        tools = code->_co_monitoring->active_monitors.tools[event];
+        tools = interp->monitors.tools[event];
     }
-    CHECK(tools_is_subset_for_event(code, event, tools));
-    CHECK((tools & code->_co_monitoring->active_monitors.tools[event]) == tools);
     return tools;
 }
 
+static const char *const event_names [] = {
+    [PY_MONITORING_EVENT_PY_START] = "PY_START",
+    [PY_MONITORING_EVENT_PY_RESUME] = "PY_RESUME",
+    [PY_MONITORING_EVENT_PY_RETURN] = "PY_RETURN",
+    [PY_MONITORING_EVENT_PY_YIELD] = "PY_YIELD",
+    [PY_MONITORING_EVENT_CALL] = "CALL",
+    [PY_MONITORING_EVENT_LINE] = "LINE",
+    [PY_MONITORING_EVENT_INSTRUCTION] = "INSTRUCTION",
+    [PY_MONITORING_EVENT_JUMP] = "JUMP",
+    [PY_MONITORING_EVENT_BRANCH] = "BRANCH",
+    [PY_MONITORING_EVENT_C_RETURN] = "C_RETURN",
+    [PY_MONITORING_EVENT_PY_THROW] = "PY_THROW",
+    [PY_MONITORING_EVENT_RAISE] = "RAISE",
+    [PY_MONITORING_EVENT_RERAISE] = "RERAISE",
+    [PY_MONITORING_EVENT_EXCEPTION_HANDLED] = "EXCEPTION_HANDLED",
+    [PY_MONITORING_EVENT_C_RAISE] = "C_RAISE",
+    [PY_MONITORING_EVENT_PY_UNWIND] = "PY_UNWIND",
+    [PY_MONITORING_EVENT_STOP_ITERATION] = "STOP_ITERATION",
+};
+
 static int
 call_instrumentation_vector(
     PyThreadState *tstate, int event,
@@ -931,27 +979,24 @@ call_instrumentation_vector(
     }
     assert(!_PyErr_Occurred(tstate));
     assert(args[0] == NULL);
-    PyCodeObject *code = frame->f_code;
-    assert(code->_co_instrumentation_version == tstate->interp->monitoring_version);
-    assert(is_version_up_to_date(code, tstate->interp));
-    assert(instrumentation_cross_checks(tstate->interp, code));
+    PyCodeObject *code = _PyFrame_GetCode(frame);
     assert(args[1] == NULL);
     args[1] = (PyObject *)code;
     int offset = (int)(instr - _PyCode_CODE(code));
     /* Offset visible to user should be the offset in bytes, as that is the
      * convention for APIs involving code offsets. */
     int bytes_offset = offset * (int)sizeof(_Py_CODEUNIT);
-    PyObject *offset_obj = PyLong_FromSsize_t(bytes_offset);
+    PyObject *offset_obj = PyLong_FromLong(bytes_offset);
     if (offset_obj == NULL) {
         return -1;
     }
     assert(args[2] == NULL);
     args[2] = offset_obj;
-    uint8_t tools = get_tools_for_instruction(code, offset, event);
+    PyInterpreterState *interp = tstate->interp;
+    uint8_t tools = get_tools_for_instruction(code, interp, offset, event);
     Py_ssize_t nargsf = nargs | PY_VECTORCALL_ARGUMENTS_OFFSET;
     PyObject **callargs = &args[1];
     int err = 0;
-    PyInterpreterState *interp = tstate->interp;
     while (tools) {
         int tool = most_significant_bit(tools);
         assert(tool >= 0 && tool < 8);
@@ -968,7 +1013,18 @@ call_instrumentation_vector(
         }
         else {
             /* DISABLE */
-            remove_tools(code, offset, event, 1 << tool);
+            if (!PY_MONITORING_IS_INSTRUMENTED_EVENT(event)) {
+                PyErr_Format(PyExc_ValueError,
+                              "Cannot disable %s events. Callback removed.",
+                             event_names[event]);
+                /* Clear tool to prevent infinite loop */
+                Py_CLEAR(interp->monitoring_callables[tool][event]);
+                err = -1;
+                break;
+            }
+            else {
+                remove_tools(code, offset, event, 1 << tool);
+            }
         }
     }
     Py_DECREF(offset_obj);
@@ -1009,10 +1065,8 @@ _Py_call_instrumentation_jump(
 {
     assert(event == PY_MONITORING_EVENT_JUMP ||
            event == PY_MONITORING_EVENT_BRANCH);
-    assert(frame->prev_instr == instr);
-    /* Event should occur after the jump */
-    frame->prev_instr = target;
-    PyCodeObject *code = frame->f_code;
+    assert(frame->instr_ptr == instr);
+    PyCodeObject *code = _PyFrame_GetCode(frame);
     int to = (int)(target - _PyCode_CODE(code));
     PyObject *to_obj = PyLong_FromLong(to * (int)sizeof(_Py_CODEUNIT));
     if (to_obj == NULL) {
@@ -1024,12 +1078,10 @@ _Py_call_instrumentation_jump(
     if (err) {
         return NULL;
     }
-    if (frame->prev_instr != target) {
+    if (frame->instr_ptr != instr) {
         /* The callback has caused a jump (by setting the line number) */
-        return frame->prev_instr;
+        return frame->instr_ptr;
     }
-    /* Reset prev_instr for INSTRUMENTED_LINE */
-    frame->prev_instr = instr;
     return target;
 }
 
@@ -1050,16 +1102,6 @@ call_instrumentation_vector_protected(
     assert(_PyErr_Occurred(tstate));
 }
 
-void
-_Py_call_instrumentation_exc0(
-    PyThreadState *tstate, int event,
-    _PyInterpreterFrame *frame, _Py_CODEUNIT *instr)
-{
-    assert(_PyErr_Occurred(tstate));
-    PyObject *args[3] = { NULL, NULL, NULL };
-    call_instrumentation_vector_protected(tstate, event, frame, instr, 2, args);
-}
-
 void
 _Py_call_instrumentation_exc2(
     PyThreadState *tstate, int event,
@@ -1088,15 +1130,13 @@ _Py_Instrumentation_GetLine(PyCodeObject *code, int index)
 int
 _Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame, _Py_CODEUNIT *instr, _Py_CODEUNIT *prev)
 {
-    frame->prev_instr = instr;
-    PyCodeObject *code = frame->f_code;
+    PyCodeObject *code = _PyFrame_GetCode(frame);
     assert(is_version_up_to_date(code, tstate->interp));
     assert(instrumentation_cross_checks(tstate->interp, code));
     int i = (int)(instr - _PyCode_CODE(code));
 
     _PyCoMonitoringData *monitoring = code->_co_monitoring;
     _PyCoLineInstrumentationData *line_data = &monitoring->lines[i];
-    uint8_t original_opcode = line_data->original_opcode;
     if (tstate->tracing) {
         goto done;
     }
@@ -1104,6 +1144,7 @@ _Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
     int8_t line_delta = line_data->line_delta;
     int line = compute_line(code, i, line_delta);
     assert(line >= 0);
+    assert(prev != NULL);
     int prev_index = (int)(prev - _PyCode_CODE(code));
     int prev_line = _Py_Instrumentation_GetLine(code, prev_index);
     if (prev_line == line) {
@@ -1120,14 +1161,46 @@ _Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
         (interp->monitors.tools[PY_MONITORING_EVENT_LINE] |
          code->_co_monitoring->local_monitors.tools[PY_MONITORING_EVENT_LINE]
         );
-    PyObject *line_obj = PyLong_FromSsize_t(line);
+    /* Special case sys.settrace to avoid boxing the line number,
+     * only to immediately unbox it. */
+    if (tools & (1 << PY_MONITORING_SYS_TRACE_ID)) {
+        if (tstate->c_tracefunc != NULL && line >= 0) {
+            PyFrameObject *frame_obj = _PyFrame_GetFrameObject(frame);
+            if (frame_obj == NULL) {
+                return -1;
+            }
+            if (frame_obj->f_trace_lines) {
+                /* Need to set tracing and what_event as if using
+                 * the instrumentation call. */
+                int old_what = tstate->what_event;
+                tstate->what_event = PY_MONITORING_EVENT_LINE;
+                tstate->tracing++;
+                /* Call c_tracefunc directly, having set the line number. */
+                Py_INCREF(frame_obj);
+                frame_obj->f_lineno = line;
+                int err = tstate->c_tracefunc(tstate->c_traceobj, frame_obj, PyTrace_LINE, Py_None);
+                frame_obj->f_lineno = 0;
+                tstate->tracing--;
+                tstate->what_event = old_what;
+                Py_DECREF(frame_obj);
+                if (err) {
+                    return -1;
+                }
+            }
+        }
+        tools &= (255 - (1 << PY_MONITORING_SYS_TRACE_ID));
+    }
+    if (tools == 0) {
+        goto done;
+    }
+    PyObject *line_obj = PyLong_FromLong(line);
     if (line_obj == NULL) {
         return -1;
     }
     PyObject *args[3] = { NULL, (PyObject *)code, line_obj };
-    while (tools) {
+    do {
         int tool = most_significant_bit(tools);
-        assert(tool >= 0 && tool < 8);
+        assert(tool >= 0 && tool < PY_MONITORING_SYS_PROFILE_ID);
         assert(tools & (1 << tool));
         tools &= ~(1 << tool);
         int res = call_one_instrument(interp, tstate, &args[1],
@@ -1145,11 +1218,13 @@ _Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
             /* DISABLE  */
             remove_line_tools(code, i, 1 << tool);
         }
-    }
+    } while (tools);
     Py_DECREF(line_obj);
+    uint8_t original_opcode;
 done:
+    original_opcode = line_data->original_opcode;
     assert(original_opcode != 0);
-    assert(original_opcode < INSTRUMENTED_LINE);
+    assert(original_opcode != INSTRUMENTED_LINE);
     assert(_PyOpcode_Deopt[original_opcode] == original_opcode);
     return original_opcode;
 }
@@ -1157,7 +1232,7 @@ _Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
 int
 _Py_call_instrumentation_instruction(PyThreadState *tstate, _PyInterpreterFrame* frame, _Py_CODEUNIT *instr)
 {
-    PyCodeObject *code = frame->f_code;
+    PyCodeObject *code = _PyFrame_GetCode(frame);
     assert(is_version_up_to_date(code, tstate->interp));
     assert(instrumentation_cross_checks(tstate->interp, code));
     int offset = (int)(instr - _PyCode_CODE(code));
@@ -1174,7 +1249,7 @@ _Py_call_instrumentation_instruction(PyThreadState *tstate, _PyInterpreterFrame*
          code->_co_monitoring->local_monitors.tools[PY_MONITORING_EVENT_INSTRUCTION]
         );
     int bytes_offset = offset * (int)sizeof(_Py_CODEUNIT);
-    PyObject *offset_obj = PyLong_FromSsize_t(bytes_offset);
+    PyObject *offset_obj = PyLong_FromLong(bytes_offset);
     if (offset_obj == NULL) {
         return -1;
     }
@@ -1209,9 +1284,9 @@ _Py_call_instrumentation_instruction(PyThreadState *tstate, _PyInterpreterFrame*
 PyObject *
 _PyMonitoring_RegisterCallback(int tool_id, int event_id, PyObject *obj)
 {
-    PyInterpreterState *is = _PyInterpreterState_Get();
+    PyInterpreterState *is = _PyInterpreterState_GET();
     assert(0 <= tool_id && tool_id < PY_MONITORING_TOOL_IDS);
-    assert(0 <= event_id && event_id < PY_MONITORING_EVENTS);
+    assert(0 <= event_id && event_id < _PY_MONITORING_EVENTS);
     PyObject *callback = is->monitoring_callables[tool_id][event_id];
     is->monitoring_callables[tool_id][event_id] = Py_XNewRef(obj);
     return callback;
@@ -1226,9 +1301,13 @@ initialize_tools(PyCodeObject *code)
     for (int i = 0; i < code_len; i++) {
         _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
         int opcode = instr->op.code;
+        assert(opcode != ENTER_EXECUTOR);
         if (opcode == INSTRUMENTED_LINE) {
             opcode = code->_co_monitoring->lines[i].original_opcode;
         }
+        if (opcode == INSTRUMENTED_INSTRUCTION) {
+            opcode = code->_co_monitoring->per_instruction_opcodes[i];
+        }
         bool instrumented = is_instrumented(opcode);
         if (instrumented) {
             opcode = DE_INSTRUMENT[opcode];
@@ -1246,7 +1325,7 @@ initialize_tools(PyCodeObject *code)
                     assert(event > 0);
                 }
                 assert(event >= 0);
-                assert(event < PY_MONITORING_INSTRUMENTED_EVENTS);
+                assert(PY_MONITORING_IS_INSTRUMENTED_EVENT(event));
                 tools[i] = code->_co_monitoring->active_monitors.tools[event];
                 CHECK(tools[i] != 0);
             }
@@ -1286,7 +1365,7 @@ initialize_lines(PyCodeObject *code)
         int opcode = _Py_GetBaseOpcode(code, i);
         int line = _PyCode_CheckLineNumber(i*(int)sizeof(_Py_CODEUNIT), &range);
         line_data[i].line_delta = compute_line_delta(code, i, line);
-        int length = instruction_length(code, i);
+        int length = _PyInstruction_GetLength(code, i);
         switch (opcode) {
             case END_ASYNC_FOR:
             case END_FOR:
@@ -1327,7 +1406,7 @@ initialize_lines(PyCodeObject *code)
             opcode = _Py_GetBaseOpcode(code, i);
         }
         oparg = (oparg << 8) | _PyCode_CODE(code)[i].op.arg;
-        i += instruction_length(code, i);
+        i += _PyInstruction_GetLength(code, i);
         int target = -1;
         switch (opcode) {
             case POP_JUMP_IF_FALSE:
@@ -1387,7 +1466,7 @@ initialize_lines(PyCodeObject *code)
 }
 
 static void
-initialize_line_tools(PyCodeObject *code, _Py_Monitors *all_events)
+initialize_line_tools(PyCodeObject *code, _Py_LocalMonitors *all_events)
 {
     uint8_t *line_tools = code->_co_monitoring->line_tools;
     assert(line_tools != NULL);
@@ -1407,8 +1486,8 @@ allocate_instrumentation_data(PyCodeObject *code)
             PyErr_NoMemory();
             return -1;
         }
-        code->_co_monitoring->local_monitors = (_Py_Monitors){ 0 };
-        code->_co_monitoring->active_monitors = (_Py_Monitors){ 0 };
+        code->_co_monitoring->local_monitors = (_Py_LocalMonitors){ 0 };
+        code->_co_monitoring->active_monitors = (_Py_LocalMonitors){ 0 };
         code->_co_monitoring->tools = NULL;
         code->_co_monitoring->lines = NULL;
         code->_co_monitoring->line_tools = NULL;
@@ -1425,7 +1504,7 @@ update_instrumentation_data(PyCodeObject *code, PyInterpreterState *interp)
     if (allocate_instrumentation_data(code)) {
         return -1;
     }
-    _Py_Monitors all_events = monitors_or(
+    _Py_LocalMonitors all_events = local_union(
         interp->monitors,
         code->_co_monitoring->local_monitors);
     bool multitools = multiple_tools(&all_events);
@@ -1482,40 +1561,38 @@ update_instrumentation_data(PyCodeObject *code, PyInterpreterState *interp)
     return 0;
 }
 
-static const uint8_t super_instructions[256] = {
-    [LOAD_FAST__LOAD_FAST] = 1,
-    [LOAD_FAST__LOAD_CONST] = 1,
-    [STORE_FAST__LOAD_FAST] = 1,
-    [STORE_FAST__STORE_FAST] = 1,
-    [LOAD_CONST__LOAD_FAST] = 1,
-};
-
-/* Should use instruction metadata for this */
-static bool
-is_super_instruction(uint8_t opcode) {
-    return super_instructions[opcode] != 0;
-}
-
 int
 _Py_Instrument(PyCodeObject *code, PyInterpreterState *interp)
 {
-
     if (is_version_up_to_date(code, interp)) {
         assert(
-            interp->monitoring_version == 0 ||
+            (interp->ceval.eval_breaker & ~_PY_EVAL_EVENTS_MASK) == 0 ||
             instrumentation_cross_checks(interp, code)
         );
         return 0;
     }
+    if (code->co_executors != NULL) {
+        _PyCode_Clear_Executors(code);
+    }
+    _Py_Executors_InvalidateDependency(interp, code);
     int code_len = (int)Py_SIZE(code);
+    /* code->_co_firsttraceable >= code_len indicates
+     * that no instrumentation can be inserted.
+     * Exit early to avoid creating instrumentation
+     * data for potential statically allocated code
+     * objects.
+     * See https://github.com/python/cpython/issues/108390 */
+    if (code->_co_firsttraceable >= code_len) {
+        return 0;
+    }
     if (update_instrumentation_data(code, interp)) {
         return -1;
     }
-    _Py_Monitors active_events = monitors_or(
+    _Py_LocalMonitors active_events = local_union(
         interp->monitors,
         code->_co_monitoring->local_monitors);
-    _Py_Monitors new_events;
-    _Py_Monitors removed_events;
+    _Py_LocalMonitors new_events;
+    _Py_LocalMonitors removed_events;
 
     bool restarted = interp->last_restart_version > code->_co_instrumentation_version;
     if (restarted) {
@@ -1528,7 +1605,7 @@ _Py_Instrument(PyCodeObject *code, PyInterpreterState *interp)
         assert(monitors_are_empty(monitors_and(new_events, removed_events)));
     }
     code->_co_monitoring->active_monitors = active_events;
-    code->_co_instrumentation_version = interp->monitoring_version;
+    code->_co_instrumentation_version = global_version(interp);
     if (monitors_are_empty(new_events) && monitors_are_empty(removed_events)) {
 #ifdef INSTRUMENT_DEBUG
         sanity_check_instrumentation(code);
@@ -1536,13 +1613,12 @@ _Py_Instrument(PyCodeObject *code, PyInterpreterState *interp)
         return 0;
     }
     /* Insert instrumentation */
-    for (int i = 0; i < code_len; i+= instruction_length(code, i)) {
+    for (int i = code->_co_firsttraceable; i < code_len; i+= _PyInstruction_GetLength(code, i)) {
         _Py_CODEUNIT *instr = &_PyCode_CODE(code)[i];
-        if (is_super_instruction(instr->op.code)) {
-            instr->op.code = _PyOpcode_Deopt[instr->op.code];
-        }
         CHECK(instr->op.code != 0);
+        assert(instr->op.code != ENTER_EXECUTOR);
         int base_opcode = _Py_GetBaseOpcode(code, i);
+        assert(base_opcode != ENTER_EXECUTOR);
         if (opcode_has_event(base_opcode)) {
             int8_t event;
             if (base_opcode == RESUME) {
@@ -1577,23 +1653,25 @@ _Py_Instrument(PyCodeObject *code, PyInterpreterState *interp)
                     remove_line_tools(code, i, removed_line_tools);
                 }
             }
-            i += instruction_length(code, i);
+            i += _PyInstruction_GetLength(code, i);
         }
     }
     if (removed_per_instruction_tools) {
         for (int i = code->_co_firsttraceable; i < code_len;) {
             int opcode = _Py_GetBaseOpcode(code, i);
             if (opcode == RESUME || opcode == END_FOR) {
-                i += instruction_length(code, i);
+                i += _PyInstruction_GetLength(code, i);
                 continue;
             }
             if (removed_per_instruction_tools) {
                 remove_per_instruction_tools(code, i, removed_per_instruction_tools);
             }
-            i += instruction_length(code, i);
+            i += _PyInstruction_GetLength(code, i);
         }
     }
-
+#ifdef INSTRUMENT_DEBUG
+    sanity_check_instrumentation(code);
+#endif
     uint8_t new_line_tools = new_events.tools[PY_MONITORING_EVENT_LINE];
     uint8_t new_per_instruction_tools = new_events.tools[PY_MONITORING_EVENT_INSTRUCTION];
 
@@ -1605,20 +1683,20 @@ _Py_Instrument(PyCodeObject *code, PyInterpreterState *interp)
                     add_line_tools(code, i, new_line_tools);
                 }
             }
-            i += instruction_length(code, i);
+            i += _PyInstruction_GetLength(code, i);
         }
     }
     if (new_per_instruction_tools) {
         for (int i = code->_co_firsttraceable; i < code_len;) {
             int opcode = _Py_GetBaseOpcode(code, i);
             if (opcode == RESUME || opcode == END_FOR) {
-                i += instruction_length(code, i);
+                i += _PyInstruction_GetLength(code, i);
                 continue;
             }
             if (new_per_instruction_tools) {
                 add_per_instruction_tools(code, i, new_per_instruction_tools);
             }
-            i += instruction_length(code, i);
+            i += _PyInstruction_GetLength(code, i);
         }
     }
 #ifdef INSTRUMENT_DEBUG
@@ -1642,10 +1720,10 @@ instrument_all_executing_code_objects(PyInterpreterState *interp) {
     PyThreadState* ts = PyInterpreterState_ThreadHead(interp);
     HEAD_UNLOCK(runtime);
     while (ts) {
-        _PyInterpreterFrame *frame = ts->cframe->current_frame;
+        _PyInterpreterFrame *frame = ts->current_frame;
         while (frame) {
             if (frame->owner != FRAME_OWNED_BY_CSTACK) {
-                if (_Py_Instrument(frame->f_code, interp)) {
+                if (_Py_Instrument(_PyFrame_GetCode(frame), interp)) {
                     return -1;
                 }
             }
@@ -1659,10 +1737,22 @@ instrument_all_executing_code_objects(PyInterpreterState *interp) {
 }
 
 static void
-set_events(_Py_Monitors *m, int tool_id, _PyMonitoringEventSet events)
+set_events(_Py_GlobalMonitors *m, int tool_id, _PyMonitoringEventSet events)
+{
+    assert(0 <= tool_id && tool_id < PY_MONITORING_TOOL_IDS);
+    for (int e = 0; e < _PY_MONITORING_UNGROUPED_EVENTS; e++) {
+        uint8_t *tools = &m->tools[e];
+        int active = (events >> e) & 1;
+        *tools &= ~(1 << tool_id);
+        *tools |= (active << tool_id);
+    }
+}
+
+static void
+set_local_events(_Py_LocalMonitors *m, int tool_id, _PyMonitoringEventSet events)
 {
     assert(0 <= tool_id && tool_id < PY_MONITORING_TOOL_IDS);
-    for (int e = 0; e < PY_MONITORING_UNGROUPED_EVENTS; e++) {
+    for (int e = 0; e < _PY_MONITORING_LOCAL_EVENTS; e++) {
         uint8_t *tools = &m->tools[e];
         int val = (events >> e) & 1;
         *tools &= ~(1 << tool_id);
@@ -1682,12 +1772,16 @@ check_tool(PyInterpreterState *interp, int tool_id)
     return 0;
 }
 
+/* We share the eval-breaker with flags, so the monitoring
+ * version goes in the top 24 bits */
+#define MONITORING_VERSION_INCREMENT (1 << _PY_EVAL_EVENTS_BITS)
+
 int
 _PyMonitoring_SetEvents(int tool_id, _PyMonitoringEventSet events)
 {
     assert(0 <= tool_id && tool_id < PY_MONITORING_TOOL_IDS);
-    PyInterpreterState *interp = _PyInterpreterState_Get();
-    assert(events < (1 << PY_MONITORING_UNGROUPED_EVENTS));
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    assert(events < (1 << _PY_MONITORING_UNGROUPED_EVENTS));
     if (check_tool(interp, tool_id)) {
         return -1;
     }
@@ -1696,7 +1790,13 @@ _PyMonitoring_SetEvents(int tool_id, _PyMonitoringEventSet events)
         return 0;
     }
     set_events(&interp->monitors, tool_id, events);
-    interp->monitoring_version++;
+    uint32_t new_version = global_version(interp) + MONITORING_VERSION_INCREMENT;
+    if (new_version == 0) {
+        PyErr_Format(PyExc_OverflowError, "events set too many times");
+        return -1;
+    }
+    set_global_version(interp, new_version);
+    _Py_Executors_InvalidateAll(interp);
     return instrument_all_executing_code_objects(interp);
 }
 
@@ -1704,30 +1804,52 @@ int
 _PyMonitoring_SetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringEventSet events)
 {
     assert(0 <= tool_id && tool_id < PY_MONITORING_TOOL_IDS);
-    PyInterpreterState *interp = _PyInterpreterState_Get();
-    assert(events < (1 << PY_MONITORING_UNGROUPED_EVENTS));
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    assert(events < (1 << _PY_MONITORING_LOCAL_EVENTS));
+    if (code->_co_firsttraceable >= Py_SIZE(code)) {
+        PyErr_Format(PyExc_SystemError, "cannot instrument shim code object '%U'", code->co_name);
+        return -1;
+    }
     if (check_tool(interp, tool_id)) {
         return -1;
     }
     if (allocate_instrumentation_data(code)) {
         return -1;
     }
-    _Py_Monitors *local = &code->_co_monitoring->local_monitors;
-    uint32_t existing_events = get_events(local, tool_id);
+    _Py_LocalMonitors *local = &code->_co_monitoring->local_monitors;
+    uint32_t existing_events = get_local_events(local, tool_id);
     if (existing_events == events) {
         return 0;
     }
-    set_events(local, tool_id, events);
+    set_local_events(local, tool_id, events);
     if (is_version_up_to_date(code, interp)) {
         /* Force instrumentation update */
-        code->_co_instrumentation_version = UINT64_MAX;
+        code->_co_instrumentation_version -= MONITORING_VERSION_INCREMENT;
     }
+    _Py_Executors_InvalidateDependency(interp, code);
     if (_Py_Instrument(code, interp)) {
         return -1;
     }
     return 0;
 }
 
+int
+_PyMonitoring_GetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringEventSet *events)
+{
+    assert(0 <= tool_id && tool_id < PY_MONITORING_TOOL_IDS);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (check_tool(interp, tool_id)) {
+        return -1;
+    }
+    if (code->_co_monitoring == NULL) {
+        *events = 0;
+        return 0;
+    }
+    _Py_LocalMonitors *local = &code->_co_monitoring->local_monitors;
+    *events = get_local_events(local, tool_id);
+    return 0;
+}
+
 /*[clinic input]
 module monitoring
 [clinic start generated code]*/
@@ -1766,7 +1888,7 @@ monitoring_use_tool_id_impl(PyObject *module, int tool_id, PyObject *name)
         PyErr_SetString(PyExc_ValueError, "tool name must be a str");
         return NULL;
     }
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     if (interp->monitoring_tool_names[tool_id] != NULL) {
         PyErr_Format(PyExc_ValueError, "tool %d is already in use", tool_id);
         return NULL;
@@ -1790,7 +1912,7 @@ monitoring_free_tool_id_impl(PyObject *module, int tool_id)
     if (check_valid_tool(tool_id))  {
         return NULL;
     }
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     Py_CLEAR(interp->monitoring_tool_names[tool_id]);
     Py_RETURN_NONE;
 }
@@ -1812,7 +1934,7 @@ monitoring_get_tool_impl(PyObject *module, int tool_id)
     if (check_valid_tool(tool_id))  {
         return NULL;
     }
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     PyObject *name = interp->monitoring_tool_names[tool_id];
     if (name == NULL) {
         Py_RETURN_NONE;
@@ -1844,10 +1966,13 @@ monitoring_register_callback_impl(PyObject *module, int tool_id, int event,
         return NULL;
     }
     int event_id = _Py_bit_length(event)-1;
-    if (event_id < 0 || event_id >= PY_MONITORING_EVENTS) {
+    if (event_id < 0 || event_id >= _PY_MONITORING_EVENTS) {
         PyErr_Format(PyExc_ValueError, "invalid event %d", event);
         return NULL;
     }
+    if (PySys_Audit("sys.monitoring.register_callback", "O", func) < 0) {
+        return NULL;
+    }
     if (func == Py_None) {
         func = NULL;
     }
@@ -1873,7 +1998,7 @@ monitoring_get_events_impl(PyObject *module, int tool_id)
     if (check_valid_tool(tool_id))  {
         return -1;
     }
-    _Py_Monitors *m = &_PyInterpreterState_Get()->monitors;
+    _Py_GlobalMonitors *m = &_PyInterpreterState_GET()->monitors;
     _PyMonitoringEventSet event_set = get_events(m, tool_id);
     return event_set;
 }
@@ -1894,7 +2019,7 @@ monitoring_set_events_impl(PyObject *module, int tool_id, int event_set)
     if (check_valid_tool(tool_id))  {
         return NULL;
     }
-    if (event_set < 0 || event_set >= (1 << PY_MONITORING_EVENTS)) {
+    if (event_set < 0 || event_set >= (1 << _PY_MONITORING_EVENTS)) {
         PyErr_Format(PyExc_ValueError, "invalid event set 0x%x", event_set);
         return NULL;
     }
@@ -1936,7 +2061,7 @@ monitoring_get_local_events_impl(PyObject *module, int tool_id,
     _PyMonitoringEventSet event_set = 0;
     _PyCoMonitoringData *data = ((PyCodeObject *)code)->_co_monitoring;
     if (data != NULL) {
-        for (int e = 0; e < PY_MONITORING_UNGROUPED_EVENTS; e++) {
+        for (int e = 0; e < _PY_MONITORING_LOCAL_EVENTS; e++) {
             if ((data->local_monitors.tools[e] >> tool_id) & 1) {
                 event_set |= (1 << e);
             }
@@ -1970,15 +2095,16 @@ monitoring_set_local_events_impl(PyObject *module, int tool_id,
     if (check_valid_tool(tool_id))  {
         return NULL;
     }
-    if (event_set < 0 || event_set >= (1 << PY_MONITORING_EVENTS)) {
-        PyErr_Format(PyExc_ValueError, "invalid event set 0x%x", event_set);
-        return NULL;
-    }
     if ((event_set & C_RETURN_EVENTS) && (event_set & C_CALL_EVENTS) != C_CALL_EVENTS) {
         PyErr_Format(PyExc_ValueError, "cannot set C_RETURN or C_RAISE events independently");
         return NULL;
     }
     event_set &= ~C_RETURN_EVENTS;
+    if (event_set < 0 || event_set >= (1 << _PY_MONITORING_LOCAL_EVENTS)) {
+        PyErr_Format(PyExc_ValueError, "invalid local event set 0x%x", event_set);
+        return NULL;
+    }
+
     if (_PyMonitoring_SetLocalEvents((PyCodeObject*)code, tool_id, event_set)) {
         return NULL;
     }
@@ -1998,9 +2124,15 @@ monitoring_restart_events_impl(PyObject *module)
      * last restart version > instrumented version for all code objects
      * last restart version < current version
      */
-    PyInterpreterState *interp = _PyInterpreterState_Get();
-    interp->last_restart_version = interp->monitoring_version + 1;
-    interp->monitoring_version = interp->last_restart_version + 1;
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    uint32_t restart_version = global_version(interp) + MONITORING_VERSION_INCREMENT;
+    uint32_t new_version = restart_version + MONITORING_VERSION_INCREMENT;
+    if (new_version <= MONITORING_VERSION_INCREMENT) {
+        PyErr_Format(PyExc_OverflowError, "events set too many times");
+        return NULL;
+    }
+    interp->last_restart_version = restart_version;
+    set_global_version(interp, new_version);
     if (instrument_all_executing_code_objects(interp)) {
         return NULL;
     }
@@ -2019,25 +2151,6 @@ add_power2_constant(PyObject *obj, const char *name, int i)
     return err;
 }
 
-static const char *const event_names [] = {
-    [PY_MONITORING_EVENT_PY_START] = "PY_START",
-    [PY_MONITORING_EVENT_PY_RESUME] = "PY_RESUME",
-    [PY_MONITORING_EVENT_PY_RETURN] = "PY_RETURN",
-    [PY_MONITORING_EVENT_PY_YIELD] = "PY_YIELD",
-    [PY_MONITORING_EVENT_CALL] = "CALL",
-    [PY_MONITORING_EVENT_LINE] = "LINE",
-    [PY_MONITORING_EVENT_INSTRUCTION] = "INSTRUCTION",
-    [PY_MONITORING_EVENT_JUMP] = "JUMP",
-    [PY_MONITORING_EVENT_BRANCH] = "BRANCH",
-    [PY_MONITORING_EVENT_C_RETURN] = "C_RETURN",
-    [PY_MONITORING_EVENT_PY_THROW] = "PY_THROW",
-    [PY_MONITORING_EVENT_RAISE] = "RAISE",
-    [PY_MONITORING_EVENT_EXCEPTION_HANDLED] = "EXCEPTION_HANDLED",
-    [PY_MONITORING_EVENT_C_RAISE] = "C_RAISE",
-    [PY_MONITORING_EVENT_PY_UNWIND] = "PY_UNWIND",
-    [PY_MONITORING_EVENT_STOP_ITERATION] = "STOP_ITERATION",
-};
-
 /*[clinic input]
 monitoring._all_events
 [clinic start generated code]*/
@@ -2046,12 +2159,12 @@ static PyObject *
 monitoring__all_events_impl(PyObject *module)
 /*[clinic end generated code: output=6b7581e2dbb690f6 input=62ee9672c17b7f0e]*/
 {
-    PyInterpreterState *interp = _PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     PyObject *res = PyDict_New();
     if (res == NULL) {
         return NULL;
     }
-    for (int e = 0; e < PY_MONITORING_UNGROUPED_EVENTS; e++) {
+    for (int e = 0; e < _PY_MONITORING_UNGROUPED_EVENTS; e++) {
         uint8_t tools = interp->monitors.tools[e];
         if (tools == 0) {
             continue;
@@ -2110,7 +2223,7 @@ PyObject *_Py_CreateMonitoringObject(void)
     if (err) {
         goto error;
     }
-    for (int i = 0; i < PY_MONITORING_EVENTS; i++) {
+    for (int i = 0; i < _PY_MONITORING_EVENTS; i++) {
         if (add_power2_constant(events, event_names[i], i)) {
             goto error;
         }
diff --git a/Python/intrinsics.c b/Python/intrinsics.c
index cca29d859902a4..d3146973b75178 100644
--- a/Python/intrinsics.c
+++ b/Python/intrinsics.c
@@ -3,16 +3,20 @@
 
 #include "Python.h"
 #include "pycore_frame.h"
-#include "pycore_runtime.h"
+#include "pycore_function.h"
 #include "pycore_global_objects.h"
-#include "pycore_intrinsics.h"
-#include "pycore_pyerrors.h"
+#include "pycore_compile.h"       // _PyCompile_GetUnaryIntrinsicName, etc
+#include "pycore_intrinsics.h"    // INTRINSIC_PRINT
+#include "pycore_pyerrors.h"      // _PyErr_SetString()
+#include "pycore_runtime.h"       // _Py_ID()
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
+#include "pycore_typevarobject.h" // _Py_make_typevar()
 
 
 /******** Unary functions ********/
 
 static PyObject *
-no_intrinsic(PyThreadState* tstate, PyObject *unused)
+no_intrinsic1(PyThreadState* tstate, PyObject *unused)
 {
     _PyErr_SetString(tstate, PyExc_SystemError, "invalid intrinsic function");
     return NULL;
@@ -38,11 +42,11 @@ import_all_from(PyThreadState *tstate, PyObject *locals, PyObject *v)
     int skip_leading_underscores = 0;
     int pos, err;
 
-    if (_PyObject_LookupAttr(v, &_Py_ID(__all__), &all) < 0) {
+    if (PyObject_GetOptionalAttr(v, &_Py_ID(__all__), &all) < 0) {
         return -1; /* Unexpected error */
     }
     if (all == NULL) {
-        if (_PyObject_LookupAttr(v, &_Py_ID(__dict__), &dict) < 0) {
+        if (PyObject_GetOptionalAttr(v, &_Py_ID(__dict__), &dict) < 0) {
             return -1;
         }
         if (dict == NULL) {
@@ -94,11 +98,6 @@ import_all_from(PyThreadState *tstate, PyObject *locals, PyObject *v)
             break;
         }
         if (skip_leading_underscores) {
-            if (PyUnicode_READY(name) == -1) {
-                Py_DECREF(name);
-                err = -1;
-                break;
-            }
             if (PyUnicode_READ_CHAR(name, 0) == '_') {
                 Py_DECREF(name);
                 continue;
@@ -123,7 +122,7 @@ import_all_from(PyThreadState *tstate, PyObject *locals, PyObject *v)
 static PyObject *
 import_star(PyThreadState* tstate, PyObject *from)
 {
-    _PyInterpreterFrame *frame = tstate->cframe->current_frame;
+    _PyInterpreterFrame *frame = tstate->current_frame;
     if (_PyFrame_FastToLocalsWithError(frame) < 0) {
         return NULL;
     }
@@ -145,20 +144,20 @@ import_star(PyThreadState* tstate, PyObject *from)
 static PyObject *
 stopiteration_error(PyThreadState* tstate, PyObject *exc)
 {
-    _PyInterpreterFrame *frame = tstate->cframe->current_frame;
+    _PyInterpreterFrame *frame = tstate->current_frame;
     assert(frame->owner == FRAME_OWNED_BY_GENERATOR);
     assert(PyExceptionInstance_Check(exc));
     const char *msg = NULL;
     if (PyErr_GivenExceptionMatches(exc, PyExc_StopIteration)) {
         msg = "generator raised StopIteration";
-        if (frame->f_code->co_flags & CO_ASYNC_GENERATOR) {
+        if (_PyFrame_GetCode(frame)->co_flags & CO_ASYNC_GENERATOR) {
             msg = "async generator raised StopIteration";
         }
-        else if (frame->f_code->co_flags & CO_COROUTINE) {
+        else if (_PyFrame_GetCode(frame)->co_flags & CO_COROUTINE) {
             msg = "coroutine raised StopIteration";
         }
     }
-    else if ((frame->f_code->co_flags & CO_ASYNC_GENERATOR) &&
+    else if ((_PyFrame_GetCode(frame)->co_flags & CO_ASYNC_GENERATOR) &&
             PyErr_GivenExceptionMatches(exc, PyExc_StopAsyncIteration))
     {
         /* code in `gen` raised a StopAsyncIteration error:
@@ -199,20 +198,42 @@ list_to_tuple(PyThreadState* unused, PyObject *v)
     return _PyTuple_FromArray(((PyListObject *)v)->ob_item, Py_SIZE(v));
 }
 
-const instrinsic_func1
+static PyObject *
+make_typevar(PyThreadState* Py_UNUSED(ignored), PyObject *v)
+{
+    assert(PyUnicode_Check(v));
+    return _Py_make_typevar(v, NULL, NULL);
+}
+
+
+#define INTRINSIC_FUNC_ENTRY(N, F) \
+    [N] = {F, #N},
+
+const intrinsic_func1_info
 _PyIntrinsics_UnaryFunctions[] = {
-    [0] = no_intrinsic,
-    [INTRINSIC_PRINT] = print_expr,
-    [INTRINSIC_IMPORT_STAR] = import_star,
-    [INTRINSIC_STOPITERATION_ERROR] = stopiteration_error,
-    [INTRINSIC_ASYNC_GEN_WRAP] = _PyAsyncGenValueWrapperNew,
-    [INTRINSIC_UNARY_POSITIVE] = unary_pos,
-    [INTRINSIC_LIST_TO_TUPLE] = list_to_tuple,
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_1_INVALID, no_intrinsic1)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_PRINT, print_expr)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_IMPORT_STAR, import_star)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_STOPITERATION_ERROR, stopiteration_error)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_ASYNC_GEN_WRAP, _PyAsyncGenValueWrapperNew)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_UNARY_POSITIVE, unary_pos)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_LIST_TO_TUPLE, list_to_tuple)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_TYPEVAR, make_typevar)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_PARAMSPEC, _Py_make_paramspec)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_TYPEVARTUPLE, _Py_make_typevartuple)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_SUBSCRIPT_GENERIC, _Py_subscript_generic)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_TYPEALIAS, _Py_make_typealias)
 };
 
 
 /******** Binary functions ********/
 
+static PyObject *
+no_intrinsic2(PyThreadState* tstate, PyObject *unused1, PyObject *unused2)
+{
+    _PyErr_SetString(tstate, PyExc_SystemError, "invalid intrinsic function");
+    return NULL;
+}
 
 static PyObject *
 prep_reraise_star(PyThreadState* unused, PyObject *orig, PyObject *excs)
@@ -221,8 +242,47 @@ prep_reraise_star(PyThreadState* unused, PyObject *orig, PyObject *excs)
     return _PyExc_PrepReraiseStar(orig, excs);
 }
 
-const instrinsic_func2
+static PyObject *
+make_typevar_with_bound(PyThreadState* Py_UNUSED(ignored), PyObject *name,
+                        PyObject *evaluate_bound)
+{
+    assert(PyUnicode_Check(name));
+    return _Py_make_typevar(name, evaluate_bound, NULL);
+}
+
+static PyObject *
+make_typevar_with_constraints(PyThreadState* Py_UNUSED(ignored), PyObject *name,
+                              PyObject *evaluate_constraints)
+{
+    assert(PyUnicode_Check(name));
+    return _Py_make_typevar(name, NULL, evaluate_constraints);
+}
+
+const intrinsic_func2_info
 _PyIntrinsics_BinaryFunctions[] = {
-    [INTRINSIC_PREP_RERAISE_STAR] = prep_reraise_star,
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_2_INVALID, no_intrinsic2)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_PREP_RERAISE_STAR, prep_reraise_star)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_TYPEVAR_WITH_BOUND, make_typevar_with_bound)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_TYPEVAR_WITH_CONSTRAINTS, make_typevar_with_constraints)
+    INTRINSIC_FUNC_ENTRY(INTRINSIC_SET_FUNCTION_TYPE_PARAMS, _Py_set_function_type_params)
 };
 
+#undef INTRINSIC_FUNC_ENTRY
+
+PyObject*
+_PyCompile_GetUnaryIntrinsicName(int index)
+{
+    if (index < 0 || index > MAX_INTRINSIC_1) {
+        return NULL;
+    }
+    return PyUnicode_FromString(_PyIntrinsics_UnaryFunctions[index].name);
+}
+
+PyObject*
+_PyCompile_GetBinaryIntrinsicName(int index)
+{
+    if (index < 0 || index > MAX_INTRINSIC_2) {
+        return NULL;
+    }
+    return PyUnicode_FromString(_PyIntrinsics_BinaryFunctions[index].name);
+}
diff --git a/Python/legacy_tracing.c b/Python/legacy_tracing.c
index 5143b79b0864d8..ccbb3eb3f7c82a 100644
--- a/Python/legacy_tracing.c
+++ b/Python/legacy_tracing.c
@@ -2,12 +2,13 @@
  * Provides callables to forward PEP 669 events to legacy events.
  */
 
-#include <stddef.h>
 #include "Python.h"
-#include "opcode.h"
-#include "pycore_ceval.h"
+#include "pycore_ceval.h"         // export _PyEval_SetProfile()
 #include "pycore_object.h"
-#include "pycore_sysmodule.h"
+#include "pycore_sysmodule.h"     // _PySys_Audit()
+
+#include "opcode.h"
+#include <stddef.h>
 
 typedef struct _PyLegacyEventHandler {
     PyObject_HEAD
@@ -45,7 +46,7 @@ call_profile_func(_PyLegacyEventHandler *self, PyObject *arg)
 }
 
 static PyObject *
-sys_profile_func2(
+sys_profile_start(
     _PyLegacyEventHandler *self, PyObject *const *args,
     size_t nargsf, PyObject *kwnames
 ) {
@@ -55,7 +56,17 @@ sys_profile_func2(
 }
 
 static PyObject *
-sys_profile_func3(
+sys_profile_throw(
+    _PyLegacyEventHandler *self, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames
+) {
+    assert(kwnames == NULL);
+    assert(PyVectorcall_NARGS(nargsf) == 3);
+    return call_profile_func(self, Py_None);
+}
+
+static PyObject *
+sys_profile_return(
     _PyLegacyEventHandler *self, PyObject *const *args,
     size_t nargsf, PyObject *kwnames
 ) {
@@ -64,6 +75,16 @@ sys_profile_func3(
     return call_profile_func(self, args[2]);
 }
 
+static PyObject *
+sys_profile_unwind(
+    _PyLegacyEventHandler *self, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames
+) {
+    assert(kwnames == NULL);
+    assert(PyVectorcall_NARGS(nargsf) == 3);
+    return call_profile_func(self, NULL);
+}
+
 static PyObject *
 sys_profile_call_or_return(
     _PyLegacyEventHandler *self, PyObject *const *args,
@@ -96,6 +117,35 @@ sys_profile_call_or_return(
     Py_RETURN_NONE;
 }
 
+int
+_PyEval_SetOpcodeTrace(
+    PyFrameObject *frame,
+    bool enable
+) {
+    assert(frame != NULL);
+    assert(PyCode_Check(frame->f_frame->f_executable));
+
+    PyCodeObject *code = (PyCodeObject *)frame->f_frame->f_executable;
+    _PyMonitoringEventSet events = 0;
+
+    if (_PyMonitoring_GetLocalEvents(code, PY_MONITORING_SYS_TRACE_ID, &events) < 0) {
+        return -1;
+    }
+
+    if (enable) {
+        if (events & (1 << PY_MONITORING_EVENT_INSTRUCTION)) {
+            return 0;
+        }
+        events |= (1 << PY_MONITORING_EVENT_INSTRUCTION);
+    } else {
+        if (!(events & (1 << PY_MONITORING_EVENT_INSTRUCTION))) {
+            return 0;
+        }
+        events &= (~(1 << PY_MONITORING_EVENT_INSTRUCTION));
+    }
+    return _PyMonitoring_SetLocalEvents(code, PY_MONITORING_SYS_TRACE_ID, events);
+}
+
 static PyObject *
 call_trace_func(_PyLegacyEventHandler *self, PyObject *arg)
 {
@@ -109,6 +159,12 @@ call_trace_func(_PyLegacyEventHandler *self, PyObject *arg)
                         "Missing frame when calling trace function.");
         return NULL;
     }
+    if (frame->f_trace_opcodes) {
+        if (_PyEval_SetOpcodeTrace(frame, true) != 0) {
+            return NULL;
+        }
+    }
+
     Py_INCREF(frame);
     int err = tstate->c_tracefunc(tstate->c_traceobj, frame, self->event, arg);
     Py_DECREF(frame);
@@ -143,7 +199,7 @@ sys_trace_exception_func(
 }
 
 static PyObject *
-sys_trace_func2(
+sys_trace_start(
     _PyLegacyEventHandler *self, PyObject *const *args,
     size_t nargsf, PyObject *kwnames
 ) {
@@ -152,6 +208,26 @@ sys_trace_func2(
     return call_trace_func(self, Py_None);
 }
 
+static PyObject *
+sys_trace_throw(
+    _PyLegacyEventHandler *self, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames
+) {
+    assert(kwnames == NULL);
+    assert(PyVectorcall_NARGS(nargsf) == 3);
+    return call_trace_func(self, Py_None);
+}
+
+static PyObject *
+sys_trace_unwind(
+    _PyLegacyEventHandler *self, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames
+) {
+    assert(kwnames == NULL);
+    assert(PyVectorcall_NARGS(nargsf) == 3);
+    return call_trace_func(self, NULL);
+}
+
 static PyObject *
 sys_trace_return(
     _PyLegacyEventHandler *self, PyObject *const *args,
@@ -189,11 +265,14 @@ sys_trace_instruction_func(
                         "Missing frame when calling trace function.");
         return NULL;
     }
-    if (!frame->f_trace_opcodes) {
+    PyThreadState *tstate = _PyThreadState_GET();
+    if (!tstate->c_tracefunc || !frame->f_trace_opcodes) {
+        if (_PyEval_SetOpcodeTrace(frame, false) != 0) {
+            return NULL;
+        }
         Py_RETURN_NONE;
     }
     Py_INCREF(frame);
-    PyThreadState *tstate = _PyThreadState_GET();
     int err = tstate->c_tracefunc(tstate->c_traceobj, frame, self->event, Py_None);
     frame->f_lineno = 0;
     Py_DECREF(frame);
@@ -236,7 +315,7 @@ sys_trace_line_func(
         Py_RETURN_NONE;
     }
     assert(PyVectorcall_NARGS(nargsf) == 2);
-    int line = _PyLong_AsInt(args[1]);
+    int line = PyLong_AsInt(args[1]);
     assert(line >= 0);
     PyFrameObject *frame = PyEval_GetFrame();
     if (frame == NULL) {
@@ -244,7 +323,7 @@ sys_trace_line_func(
                         "Missing frame when calling trace function.");
         return NULL;
     }
-    assert(args[0] == (PyObject *)frame->f_frame->f_code);
+    assert(args[0] == (PyObject *)_PyFrame_GetCode(frame->f_frame));
     return trace_line(tstate, self, frame, line);
 }
 
@@ -262,9 +341,9 @@ sys_trace_jump_func(
         Py_RETURN_NONE;
     }
     assert(PyVectorcall_NARGS(nargsf) == 3);
-    int from = _PyLong_AsInt(args[1])/sizeof(_Py_CODEUNIT);
+    int from = PyLong_AsInt(args[1])/sizeof(_Py_CODEUNIT);
     assert(from >= 0);
-    int to = _PyLong_AsInt(args[2])/sizeof(_Py_CODEUNIT);
+    int to = PyLong_AsInt(args[2])/sizeof(_Py_CODEUNIT);
     assert(to >= 0);
     if (to > from) {
         /* Forward jump */
@@ -286,7 +365,6 @@ sys_trace_jump_func(
                         "Missing frame when calling trace function.");
         return NULL;
     }
-    assert(code == frame->f_frame->f_code);
     if (!frame->f_trace_lines) {
         Py_RETURN_NONE;
     }
@@ -353,17 +431,22 @@ _PyEval_SetProfile(PyThreadState *tstate, Py_tracefunc func, PyObject *arg)
     if (!tstate->interp->sys_profile_initialized) {
         tstate->interp->sys_profile_initialized = true;
         if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
-            (vectorcallfunc)sys_profile_func2, PyTrace_CALL,
+            (vectorcallfunc)sys_profile_start, PyTrace_CALL,
                         PY_MONITORING_EVENT_PY_START, PY_MONITORING_EVENT_PY_RESUME)) {
             return -1;
         }
         if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
-            (vectorcallfunc)sys_profile_func3, PyTrace_RETURN,
+            (vectorcallfunc)sys_profile_throw, PyTrace_CALL,
+                        PY_MONITORING_EVENT_PY_THROW, -1)) {
+            return -1;
+        }
+        if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
+            (vectorcallfunc)sys_profile_return, PyTrace_RETURN,
                         PY_MONITORING_EVENT_PY_RETURN, PY_MONITORING_EVENT_PY_YIELD)) {
             return -1;
         }
         if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
-            (vectorcallfunc)sys_profile_func2, PyTrace_RETURN,
+            (vectorcallfunc)sys_profile_unwind, PyTrace_RETURN,
                         PY_MONITORING_EVENT_PY_UNWIND, -1)) {
             return -1;
         }
@@ -397,7 +480,8 @@ _PyEval_SetProfile(PyThreadState *tstate, Py_tracefunc func, PyObject *arg)
         events =
             (1 << PY_MONITORING_EVENT_PY_START) | (1 << PY_MONITORING_EVENT_PY_RESUME) |
             (1 << PY_MONITORING_EVENT_PY_RETURN) | (1 << PY_MONITORING_EVENT_PY_YIELD) |
-            (1 << PY_MONITORING_EVENT_CALL) | (1 << PY_MONITORING_EVENT_PY_UNWIND);
+            (1 << PY_MONITORING_EVENT_CALL) | (1 << PY_MONITORING_EVENT_PY_UNWIND) |
+            (1 << PY_MONITORING_EVENT_PY_THROW);
     }
     return _PyMonitoring_SetEvents(PY_MONITORING_SYS_PROFILE_ID, events);
 }
@@ -421,12 +505,12 @@ _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg)
     if (!tstate->interp->sys_trace_initialized) {
         tstate->interp->sys_trace_initialized = true;
         if (set_callbacks(PY_MONITORING_SYS_TRACE_ID,
-            (vectorcallfunc)sys_trace_func2, PyTrace_CALL,
+            (vectorcallfunc)sys_trace_start, PyTrace_CALL,
                         PY_MONITORING_EVENT_PY_START, PY_MONITORING_EVENT_PY_RESUME)) {
             return -1;
         }
         if (set_callbacks(PY_MONITORING_SYS_TRACE_ID,
-            (vectorcallfunc)sys_trace_func2, PyTrace_CALL,
+            (vectorcallfunc)sys_trace_throw, PyTrace_CALL,
                         PY_MONITORING_EVENT_PY_THROW, -1)) {
             return -1;
         }
@@ -451,7 +535,7 @@ _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg)
             return -1;
         }
         if (set_callbacks(PY_MONITORING_SYS_TRACE_ID,
-            (vectorcallfunc)sys_trace_func2, PyTrace_RETURN,
+            (vectorcallfunc)sys_trace_unwind, PyTrace_RETURN,
                         PY_MONITORING_EVENT_PY_UNWIND, -1)) {
             return -1;
         }
@@ -485,9 +569,15 @@ _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg)
             (1 << PY_MONITORING_EVENT_PY_UNWIND) | (1 << PY_MONITORING_EVENT_PY_THROW) |
             (1 << PY_MONITORING_EVENT_STOP_ITERATION) |
             (1 << PY_MONITORING_EVENT_EXCEPTION_HANDLED);
-        if (tstate->interp->f_opcode_trace_set) {
-            events |= (1 << PY_MONITORING_EVENT_INSTRUCTION);
+
+        PyFrameObject* frame = PyEval_GetFrame();
+        if (frame->f_trace_opcodes) {
+            int ret = _PyEval_SetOpcodeTrace(frame, true);
+            if (ret != 0) {
+                return ret;
+            }
         }
     }
+
     return _PyMonitoring_SetEvents(PY_MONITORING_SYS_TRACE_ID, events);
 }
diff --git a/Python/lock.c b/Python/lock.c
new file mode 100644
index 00000000000000..e9279f0b92a5e7
--- /dev/null
+++ b/Python/lock.c
@@ -0,0 +1,355 @@
+// Lock implementation
+
+#include "Python.h"
+
+#include "pycore_lock.h"
+#include "pycore_parking_lot.h"
+#include "pycore_semaphore.h"
+
+#ifdef MS_WINDOWS
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>        // SwitchToThread()
+#elif defined(HAVE_SCHED_H)
+#include <sched.h>          // sched_yield()
+#endif
+
+// If a thread waits on a lock for longer than TIME_TO_BE_FAIR_NS (1 ms), then
+// the unlocking thread directly hands off ownership of the lock. This avoids
+// starvation.
+static const _PyTime_t TIME_TO_BE_FAIR_NS = 1000*1000;
+
+// Spin for a bit before parking the thread. This is only enabled for
+// `--disable-gil` builds because it is unlikely to be helpful if the GIL is
+// enabled.
+#if Py_GIL_DISABLED
+static const int MAX_SPIN_COUNT = 40;
+#else
+static const int MAX_SPIN_COUNT = 0;
+#endif
+
+struct mutex_entry {
+    // The time after which the unlocking thread should hand off lock ownership
+    // directly to the waiting thread. Written by the waiting thread.
+    _PyTime_t time_to_be_fair;
+
+    // Set to 1 if the lock was handed off. Written by the unlocking thread.
+    int handed_off;
+};
+
+static void
+_Py_yield(void)
+{
+#ifdef MS_WINDOWS
+    SwitchToThread();
+#elif defined(HAVE_SCHED_H)
+    sched_yield();
+#endif
+}
+
+void
+_PyMutex_LockSlow(PyMutex *m)
+{
+    _PyMutex_LockTimed(m, -1, _PY_LOCK_DETACH);
+}
+
+PyLockStatus
+_PyMutex_LockTimed(PyMutex *m, _PyTime_t timeout, _PyLockFlags flags)
+{
+    uint8_t v = _Py_atomic_load_uint8_relaxed(&m->v);
+    if ((v & _Py_LOCKED) == 0) {
+        if (_Py_atomic_compare_exchange_uint8(&m->v, &v, v|_Py_LOCKED)) {
+            return PY_LOCK_ACQUIRED;
+        }
+    }
+    else if (timeout == 0) {
+        return PY_LOCK_FAILURE;
+    }
+
+    _PyTime_t now = _PyTime_GetMonotonicClock();
+    _PyTime_t endtime = 0;
+    if (timeout > 0) {
+        endtime = _PyTime_Add(now, timeout);
+    }
+
+    struct mutex_entry entry = {
+        .time_to_be_fair = now + TIME_TO_BE_FAIR_NS,
+        .handed_off = 0,
+    };
+
+    Py_ssize_t spin_count = 0;
+    for (;;) {
+        if ((v & _Py_LOCKED) == 0) {
+            // The lock is unlocked. Try to grab it.
+            if (_Py_atomic_compare_exchange_uint8(&m->v, &v, v|_Py_LOCKED)) {
+                return PY_LOCK_ACQUIRED;
+            }
+            continue;
+        }
+
+        if (!(v & _Py_HAS_PARKED) && spin_count < MAX_SPIN_COUNT) {
+            // Spin for a bit.
+            _Py_yield();
+            spin_count++;
+            continue;
+        }
+
+        if (timeout == 0) {
+            return PY_LOCK_FAILURE;
+        }
+
+        uint8_t newv = v;
+        if (!(v & _Py_HAS_PARKED)) {
+            // We are the first waiter. Set the _Py_HAS_PARKED flag.
+            newv = v | _Py_HAS_PARKED;
+            if (!_Py_atomic_compare_exchange_uint8(&m->v, &v, newv)) {
+                continue;
+            }
+        }
+
+        int ret = _PyParkingLot_Park(&m->v, &newv, sizeof(newv), timeout,
+                                     &entry, (flags & _PY_LOCK_DETACH) != 0);
+        if (ret == Py_PARK_OK) {
+            if (entry.handed_off) {
+                // We own the lock now.
+                assert(_Py_atomic_load_uint8_relaxed(&m->v) & _Py_LOCKED);
+                return PY_LOCK_ACQUIRED;
+            }
+        }
+        else if (ret == Py_PARK_INTR && (flags & _PY_LOCK_HANDLE_SIGNALS)) {
+            if (Py_MakePendingCalls() < 0) {
+                return PY_LOCK_INTR;
+            }
+        }
+        else if (ret == Py_PARK_TIMEOUT) {
+            assert(timeout >= 0);
+            return PY_LOCK_FAILURE;
+        }
+
+        if (timeout > 0) {
+            timeout = _PyDeadline_Get(endtime);
+            if (timeout <= 0) {
+                // Avoid negative values because those mean block forever.
+                timeout = 0;
+            }
+        }
+
+        v = _Py_atomic_load_uint8_relaxed(&m->v);
+    }
+}
+
+static void
+mutex_unpark(PyMutex *m, struct mutex_entry *entry, int has_more_waiters)
+{
+    uint8_t v = 0;
+    if (entry) {
+        _PyTime_t now = _PyTime_GetMonotonicClock();
+        int should_be_fair = now > entry->time_to_be_fair;
+
+        entry->handed_off = should_be_fair;
+        if (should_be_fair) {
+            v |= _Py_LOCKED;
+        }
+        if (has_more_waiters) {
+            v |= _Py_HAS_PARKED;
+        }
+    }
+    _Py_atomic_store_uint8(&m->v, v);
+}
+
+int
+_PyMutex_TryUnlock(PyMutex *m)
+{
+    uint8_t v = _Py_atomic_load_uint8(&m->v);
+    for (;;) {
+        if ((v & _Py_LOCKED) == 0) {
+            // error: the mutex is not locked
+            return -1;
+        }
+        else if ((v & _Py_HAS_PARKED)) {
+            // wake up a single thread
+            _PyParkingLot_Unpark(&m->v, (_Py_unpark_fn_t *)mutex_unpark, m);
+            return 0;
+        }
+        else if (_Py_atomic_compare_exchange_uint8(&m->v, &v, _Py_UNLOCKED)) {
+            // fast-path: no waiters
+            return 0;
+        }
+    }
+}
+
+void
+_PyMutex_UnlockSlow(PyMutex *m)
+{
+    if (_PyMutex_TryUnlock(m) < 0) {
+        Py_FatalError("unlocking mutex that is not locked");
+    }
+}
+
+// _PyRawMutex stores a linked list of `struct raw_mutex_entry`, one for each
+// thread waiting on the mutex, directly in the mutex itself.
+struct raw_mutex_entry {
+    struct raw_mutex_entry *next;
+    _PySemaphore sema;
+};
+
+void
+_PyRawMutex_LockSlow(_PyRawMutex *m)
+{
+    struct raw_mutex_entry waiter;
+    _PySemaphore_Init(&waiter.sema);
+
+    uintptr_t v = _Py_atomic_load_uintptr(&m->v);
+    for (;;) {
+        if ((v & _Py_LOCKED) == 0) {
+            // Unlocked: try to grab it (even if it has a waiter).
+            if (_Py_atomic_compare_exchange_uintptr(&m->v, &v, v|_Py_LOCKED)) {
+                break;
+            }
+            continue;
+        }
+
+        // Locked: try to add ourselves as a waiter.
+        waiter.next = (struct raw_mutex_entry *)(v & ~1);
+        uintptr_t desired = ((uintptr_t)&waiter)|_Py_LOCKED;
+        if (!_Py_atomic_compare_exchange_uintptr(&m->v, &v, desired)) {
+            continue;
+        }
+
+        // Wait for us to be woken up. Note that we still have to lock the
+        // mutex ourselves: it is NOT handed off to us.
+        _PySemaphore_Wait(&waiter.sema, -1, /*detach=*/0);
+    }
+
+    _PySemaphore_Destroy(&waiter.sema);
+}
+
+void
+_PyRawMutex_UnlockSlow(_PyRawMutex *m)
+{
+    uintptr_t v = _Py_atomic_load_uintptr(&m->v);
+    for (;;) {
+        if ((v & _Py_LOCKED) == 0) {
+            Py_FatalError("unlocking mutex that is not locked");
+        }
+
+        struct raw_mutex_entry *waiter = (struct raw_mutex_entry *)(v & ~1);
+        if (waiter) {
+            uintptr_t next_waiter = (uintptr_t)waiter->next;
+            if (_Py_atomic_compare_exchange_uintptr(&m->v, &v, next_waiter)) {
+                _PySemaphore_Wakeup(&waiter->sema);
+                return;
+            }
+        }
+        else {
+            if (_Py_atomic_compare_exchange_uintptr(&m->v, &v, _Py_UNLOCKED)) {
+                return;
+            }
+        }
+    }
+}
+
+void
+_PyEvent_Notify(PyEvent *evt)
+{
+    uintptr_t v = _Py_atomic_exchange_uint8(&evt->v, _Py_LOCKED);
+    if (v == _Py_UNLOCKED) {
+        // no waiters
+        return;
+    }
+    else if (v == _Py_LOCKED) {
+        // event already set
+        return;
+    }
+    else {
+        assert(v == _Py_HAS_PARKED);
+        _PyParkingLot_UnparkAll(&evt->v);
+    }
+}
+
+void
+PyEvent_Wait(PyEvent *evt)
+{
+    while (!PyEvent_WaitTimed(evt, -1))
+        ;
+}
+
+int
+PyEvent_WaitTimed(PyEvent *evt, _PyTime_t timeout_ns)
+{
+    for (;;) {
+        uint8_t v = _Py_atomic_load_uint8(&evt->v);
+        if (v == _Py_LOCKED) {
+            // event already set
+            return 1;
+        }
+        if (v == _Py_UNLOCKED) {
+            if (!_Py_atomic_compare_exchange_uint8(&evt->v, &v, _Py_HAS_PARKED)) {
+                continue;
+            }
+        }
+
+        uint8_t expected = _Py_HAS_PARKED;
+        (void) _PyParkingLot_Park(&evt->v, &expected, sizeof(evt->v),
+                                  timeout_ns, NULL, 1);
+
+        return _Py_atomic_load_uint8(&evt->v) == _Py_LOCKED;
+    }
+}
+
+static int
+unlock_once(_PyOnceFlag *o, int res)
+{
+    // On success (res=0), we set the state to _Py_ONCE_INITIALIZED.
+    // On failure (res=-1), we reset the state to _Py_UNLOCKED.
+    uint8_t new_value;
+    switch (res) {
+        case -1: new_value = _Py_UNLOCKED; break;
+        case  0: new_value = _Py_ONCE_INITIALIZED; break;
+        default: {
+            Py_FatalError("invalid result from _PyOnceFlag_CallOnce");
+            Py_UNREACHABLE();
+            break;
+        }
+    }
+
+    uint8_t old_value = _Py_atomic_exchange_uint8(&o->v, new_value);
+    if ((old_value & _Py_HAS_PARKED) != 0) {
+        // wake up anyone waiting on the once flag
+        _PyParkingLot_UnparkAll(&o->v);
+    }
+    return res;
+}
+
+int
+_PyOnceFlag_CallOnceSlow(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg)
+{
+    uint8_t v = _Py_atomic_load_uint8(&flag->v);
+    for (;;) {
+        if (v == _Py_UNLOCKED) {
+            if (!_Py_atomic_compare_exchange_uint8(&flag->v, &v, _Py_LOCKED)) {
+                continue;
+            }
+            int res = fn(arg);
+            return unlock_once(flag, res);
+        }
+
+        if (v == _Py_ONCE_INITIALIZED) {
+            return 0;
+        }
+
+        // The once flag is initializing (locked).
+        assert((v & _Py_LOCKED));
+        if (!(v & _Py_HAS_PARKED)) {
+            // We are the first waiter. Set the _Py_HAS_PARKED flag.
+            uint8_t new_value = v | _Py_HAS_PARKED;
+            if (!_Py_atomic_compare_exchange_uint8(&flag->v, &v, new_value)) {
+                continue;
+            }
+            v = new_value;
+        }
+
+        // Wait for initialization to finish.
+        _PyParkingLot_Park(&flag->v, &v, sizeof(v), -1, NULL, 1);
+        v = _Py_atomic_load_uint8(&flag->v);
+    }
+}
diff --git a/Python/makeopcodetargets.py b/Python/makeopcodetargets.py
deleted file mode 100755
index 2b402ae0b6a031..00000000000000
--- a/Python/makeopcodetargets.py
+++ /dev/null
@@ -1,55 +0,0 @@
-#! /usr/bin/env python
-"""Generate C code for the jump table of the threaded code interpreter
-(for compilers supporting computed gotos or "labels-as-values", such as gcc).
-"""
-
-import os
-import sys
-
-
-# 2023-04-27(warsaw): Pre-Python 3.12, this would catch ImportErrors and try to
-# import imp, and then use imp.load_module().  The imp module was removed in
-# Python 3.12 (and long deprecated before that), and it's unclear under what
-# conditions this import will now fail, so the fallback was simply removed.
-from importlib.machinery import SourceFileLoader
-
-def find_module(modname):
-    """Finds and returns a module in the local dist/checkout.
-    """
-    modpath = os.path.join(
-        os.path.dirname(os.path.dirname(__file__)), "Lib", modname + ".py")
-    return SourceFileLoader(modname, modpath).load_module()
-
-
-def write_contents(f):
-    """Write C code contents to the target file object.
-    """
-    opcode = find_module('opcode')
-    targets = ['_unknown_opcode'] * 256
-    for opname, op in opcode.opmap.items():
-        if not opcode.is_pseudo(op):
-            targets[op] = "TARGET_%s" % opname
-    next_op = 1
-    for opname in opcode._specialized_instructions:
-        while targets[next_op] != '_unknown_opcode':
-            next_op += 1
-        targets[next_op] = "TARGET_%s" % opname
-    f.write("static void *opcode_targets[256] = {\n")
-    f.write(",\n".join(["    &&%s" % s for s in targets]))
-    f.write("\n};\n")
-
-
-def main():
-    if len(sys.argv) >= 3:
-        sys.exit("Too many arguments")
-    if len(sys.argv) == 2:
-        target = sys.argv[1]
-    else:
-        target = "Python/opcode_targets.h"
-    with open(target, "w") as f:
-        write_contents(f)
-    print("Jump table written into %s" % target)
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Python/marshal.c b/Python/marshal.c
index 208996b05fc484..8940582c7f5328 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -6,13 +6,12 @@
    Version 3 of this protocol properly supports circular links
    and sharing. */
 
-#define PY_SSIZE_T_CLEAN
-
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_code.h"          // _PyCode_New()
-#include "pycore_long.h"          // _PyLong_DigitCount
 #include "pycore_hashtable.h"     // _Py_hashtable_t
+#include "pycore_long.h"          // _PyLong_DigitCount
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "marshal.h"              // Py_MARSHAL_VERSION
 
 /*[clinic input]
@@ -625,6 +624,10 @@ w_clear_refs(WFILE *wf)
 }
 
 /* version currently has no effect for writing ints. */
+/* Note that while the documentation states that this function
+ * can error, currently it never does. Setting an exception in
+ * this function should be regarded as an API-breaking change.
+ */
 void
 PyMarshal_WriteLongToFile(long x, FILE *fp, int version)
 {
@@ -747,23 +750,28 @@ r_string(Py_ssize_t n, RFILE *p)
 static int
 r_byte(RFILE *p)
 {
-    int c = EOF;
-
     if (p->ptr != NULL) {
-        if (p->ptr < p->end)
-            c = (unsigned char) *p->ptr++;
-        return c;
+        if (p->ptr < p->end) {
+            return (unsigned char) *p->ptr++;
+        }
     }
-    if (!p->readable) {
+    else if (!p->readable) {
         assert(p->fp);
-        c = getc(p->fp);
+        int c = getc(p->fp);
+        if (c != EOF) {
+            return c;
+        }
     }
     else {
         const char *ptr = r_string(1, p);
-        if (ptr != NULL)
-            c = *(const unsigned char *) ptr;
+        if (ptr != NULL) {
+            return *(const unsigned char *) ptr;
+        }
+        return EOF;
     }
-    return c;
+    PyErr_SetString(PyExc_EOFError,
+                    "EOF read where not expected");
+    return EOF;
 }
 
 static int
@@ -824,10 +832,11 @@ r_PyLong(RFILE *p)
     digit d;
 
     n = r_long(p);
-    if (PyErr_Occurred())
-        return NULL;
     if (n == 0)
         return (PyObject *)_PyLong_New(0);
+    if (n == -1 && PyErr_Occurred()) {
+        return NULL;
+    }
     if (n < -SIZE32_MAX || n > SIZE32_MAX) {
         PyErr_SetString(PyExc_ValueError,
                        "bad marshal data (long size out of range)");
@@ -846,10 +855,6 @@ r_PyLong(RFILE *p)
         d = 0;
         for (j=0; j < PyLong_MARSHAL_RATIO; j++) {
             md = r_short(p);
-            if (PyErr_Occurred()) {
-                Py_DECREF(ob);
-                return NULL;
-            }
             if (md < 0 || md > PyLong_MARSHAL_BASE)
                 goto bad_digit;
             d += (digit)md << j*PyLong_MARSHAL_SHIFT;
@@ -860,10 +865,6 @@ r_PyLong(RFILE *p)
     d = 0;
     for (j=0; j < shorts_in_top_digit; j++) {
         md = r_short(p);
-        if (PyErr_Occurred()) {
-            Py_DECREF(ob);
-            return NULL;
-        }
         if (md < 0 || md > PyLong_MARSHAL_BASE)
             goto bad_digit;
         /* topmost marshal digit should be nonzero */
@@ -875,18 +876,17 @@ r_PyLong(RFILE *p)
         }
         d += (digit)md << j*PyLong_MARSHAL_SHIFT;
     }
-    if (PyErr_Occurred()) {
-        Py_DECREF(ob);
-        return NULL;
-    }
+    assert(!PyErr_Occurred());
     /* top digit should be nonzero, else the resulting PyLong won't be
        normalized */
     ob->long_value.ob_digit[size-1] = d;
     return (PyObject *)ob;
   bad_digit:
     Py_DECREF(ob);
-    PyErr_SetString(PyExc_ValueError,
-                    "bad marshal data (digit out of range in long)");
+    if (!PyErr_Occurred()) {
+        PyErr_SetString(PyExc_ValueError,
+                        "bad marshal data (digit out of range in long)");
+    }
     return NULL;
 }
 
@@ -909,8 +909,6 @@ r_float_str(RFILE *p)
     const char *ptr;
     n = r_byte(p);
     if (n == EOF) {
-        PyErr_SetString(PyExc_EOFError,
-            "EOF read where object expected");
         return -1;
     }
     ptr = r_string(n, p);
@@ -988,8 +986,10 @@ r_object(RFILE *p)
     PyObject *retval = NULL;
 
     if (code == EOF) {
-        PyErr_SetString(PyExc_EOFError,
-                        "EOF read where object expected");
+        if (PyErr_ExceptionMatches(PyExc_EOFError)) {
+            PyErr_SetString(PyExc_EOFError,
+                            "EOF read where object expected");
+        }
         return NULL;
     }
 
@@ -1015,7 +1015,7 @@ r_object(RFILE *p)
         break;
 
     case TYPE_NONE:
-        retval = Py_NewRef(Py_None);
+        retval = Py_None;
         break;
 
     case TYPE_STOPITER:
@@ -1023,20 +1023,23 @@ r_object(RFILE *p)
         break;
 
     case TYPE_ELLIPSIS:
-        retval = Py_NewRef(Py_Ellipsis);
+        retval = Py_Ellipsis;
         break;
 
     case TYPE_FALSE:
-        retval = Py_NewRef(Py_False);
+        retval = Py_False;
         break;
 
     case TYPE_TRUE:
-        retval = Py_NewRef(Py_True);
+        retval = Py_True;
         break;
 
     case TYPE_INT:
         n = r_long(p);
-        retval = PyErr_Occurred() ? NULL : PyLong_FromLong(n);
+        if (n == -1 && PyErr_Occurred()) {
+            break;
+        }
+        retval = PyLong_FromLong(n);
         R_REF(retval);
         break;
 
@@ -1102,10 +1105,11 @@ r_object(RFILE *p)
         {
             const char *ptr;
             n = r_long(p);
-            if (PyErr_Occurred())
-                break;
             if (n < 0 || n > SIZE32_MAX) {
-                PyErr_SetString(PyExc_ValueError, "bad marshal data (bytes object size out of range)");
+                if (!PyErr_Occurred()) {
+                    PyErr_SetString(PyExc_ValueError,
+                        "bad marshal data (bytes object size out of range)");
+                }
                 break;
             }
             v = PyBytes_FromStringAndSize((char *)NULL, n);
@@ -1127,10 +1131,11 @@ r_object(RFILE *p)
         /* fall through */
     case TYPE_ASCII:
         n = r_long(p);
-        if (PyErr_Occurred())
-            break;
         if (n < 0 || n > SIZE32_MAX) {
-            PyErr_SetString(PyExc_ValueError, "bad marshal data (string size out of range)");
+            if (!PyErr_Occurred()) {
+                PyErr_SetString(PyExc_ValueError,
+                    "bad marshal data (string size out of range)");
+            }
             break;
         }
         goto _read_ascii;
@@ -1141,8 +1146,6 @@ r_object(RFILE *p)
     case TYPE_SHORT_ASCII:
         n = r_byte(p);
         if (n == EOF) {
-            PyErr_SetString(PyExc_EOFError,
-                "EOF read where object expected");
             break;
         }
     _read_ascii:
@@ -1169,10 +1172,11 @@ r_object(RFILE *p)
         const char *buffer;
 
         n = r_long(p);
-        if (PyErr_Occurred())
-            break;
         if (n < 0 || n > SIZE32_MAX) {
-            PyErr_SetString(PyExc_ValueError, "bad marshal data (string size out of range)");
+            if (!PyErr_Occurred()) {
+                PyErr_SetString(PyExc_ValueError,
+                    "bad marshal data (string size out of range)");
+            }
             break;
         }
         if (n != 0) {
@@ -1194,16 +1198,18 @@ r_object(RFILE *p)
         }
 
     case TYPE_SMALL_TUPLE:
-        n = (unsigned char) r_byte(p);
-        if (PyErr_Occurred())
+        n = r_byte(p);
+        if (n == EOF) {
             break;
+        }
         goto _read_tuple;
     case TYPE_TUPLE:
         n = r_long(p);
-        if (PyErr_Occurred())
-            break;
         if (n < 0 || n > SIZE32_MAX) {
-            PyErr_SetString(PyExc_ValueError, "bad marshal data (tuple size out of range)");
+            if (!PyErr_Occurred()) {
+                PyErr_SetString(PyExc_ValueError,
+                    "bad marshal data (tuple size out of range)");
+            }
             break;
         }
     _read_tuple:
@@ -1228,10 +1234,11 @@ r_object(RFILE *p)
 
     case TYPE_LIST:
         n = r_long(p);
-        if (PyErr_Occurred())
-            break;
         if (n < 0 || n > SIZE32_MAX) {
-            PyErr_SetString(PyExc_ValueError, "bad marshal data (list size out of range)");
+            if (!PyErr_Occurred()) {
+                PyErr_SetString(PyExc_ValueError,
+                    "bad marshal data (list size out of range)");
+            }
             break;
         }
         v = PyList_New(n);
@@ -1284,10 +1291,11 @@ r_object(RFILE *p)
     case TYPE_SET:
     case TYPE_FROZENSET:
         n = r_long(p);
-        if (PyErr_Occurred())
-            break;
         if (n < 0 || n > SIZE32_MAX) {
-            PyErr_SetString(PyExc_ValueError, "bad marshal data (set size out of range)");
+            if (!PyErr_Occurred()) {
+                PyErr_SetString(PyExc_ValueError,
+                    "bad marshal data (set size out of range)");
+            }
             break;
         }
 
@@ -1364,20 +1372,20 @@ r_object(RFILE *p)
 
             /* XXX ignore long->int overflows for now */
             argcount = (int)r_long(p);
-            if (PyErr_Occurred())
+            if (argcount == -1 && PyErr_Occurred())
                 goto code_error;
             posonlyargcount = (int)r_long(p);
-            if (PyErr_Occurred()) {
+            if (posonlyargcount == -1 && PyErr_Occurred()) {
                 goto code_error;
             }
             kwonlyargcount = (int)r_long(p);
-            if (PyErr_Occurred())
+            if (kwonlyargcount == -1 && PyErr_Occurred())
                 goto code_error;
             stacksize = (int)r_long(p);
-            if (PyErr_Occurred())
+            if (stacksize == -1 && PyErr_Occurred())
                 goto code_error;
             flags = (int)r_long(p);
-            if (PyErr_Occurred())
+            if (flags == -1 && PyErr_Occurred())
                 goto code_error;
             code = r_object(p);
             if (code == NULL)
@@ -1450,6 +1458,10 @@ r_object(RFILE *p)
             v = r_ref_insert(v, idx, flag, p);
 
           code_error:
+            if (v == NULL && !PyErr_Occurred()) {
+                PyErr_SetString(PyExc_TypeError,
+                    "NULL object in marshal data for code object");
+            }
             Py_XDECREF(code);
             Py_XDECREF(consts);
             Py_XDECREF(names);
@@ -1467,9 +1479,10 @@ r_object(RFILE *p)
     case TYPE_REF:
         n = r_long(p);
         if (n < 0 || n >= PyList_GET_SIZE(p->refs)) {
-            if (n == -1 && PyErr_Occurred())
-                break;
-            PyErr_SetString(PyExc_ValueError, "bad marshal data (invalid reference)");
+            if (!PyErr_Occurred()) {
+                PyErr_SetString(PyExc_ValueError,
+                    "bad marshal data (invalid reference)");
+            }
             break;
         }
         v = PyList_GET_ITEM(p->refs, n);
@@ -1703,7 +1716,7 @@ marshal_dump_impl(PyObject *module, PyObject *value, PyObject *file,
     s = PyMarshal_WriteObjectToString(value, version);
     if (s == NULL)
         return NULL;
-    res = _PyObject_CallMethodOneArg(file, &_Py_ID(write), s);
+    res = PyObject_CallMethodOneArg(file, &_Py_ID(write), s);
     Py_DECREF(s);
     return res;
 }
diff --git a/Python/modsupport.c b/Python/modsupport.c
index be229c987b8a78..e9abf304e6502c 100644
--- a/Python/modsupport.c
+++ b/Python/modsupport.c
@@ -5,11 +5,9 @@
 #include "pycore_abstract.h"   // _PyIndex_Check()
 #include "pycore_object.h"     // _PyType_IsReady()
 
-#define FLAG_SIZE_T 1
 typedef double va_double;
 
-static PyObject *va_build_value(const char *, va_list, int);
-static PyObject **va_build_stack(PyObject **small_stack, Py_ssize_t small_stack_len, const char *, va_list, int, Py_ssize_t*);
+static PyObject *va_build_value(const char *, va_list);
 
 
 int
@@ -84,21 +82,39 @@ countformat(const char *format, char endchar)
 /* Generic function to create a value -- the inverse of getargs() */
 /* After an original idea and first implementation by Steven Miale */
 
-static PyObject *do_mktuple(const char**, va_list *, char, Py_ssize_t, int);
-static int do_mkstack(PyObject **, const char**, va_list *, char, Py_ssize_t, int);
-static PyObject *do_mklist(const char**, va_list *, char, Py_ssize_t, int);
-static PyObject *do_mkdict(const char**, va_list *, char, Py_ssize_t, int);
-static PyObject *do_mkvalue(const char**, va_list *, int);
+static PyObject *do_mktuple(const char**, va_list *, char, Py_ssize_t);
+static int do_mkstack(PyObject **, const char**, va_list *, char, Py_ssize_t);
+static PyObject *do_mklist(const char**, va_list *, char, Py_ssize_t);
+static PyObject *do_mkdict(const char**, va_list *, char, Py_ssize_t);
+static PyObject *do_mkvalue(const char**, va_list *);
 
+static int
+check_end(const char **p_format, char endchar)
+{
+    const char *f = *p_format;
+    while (*f != endchar) {
+        if (*f != ' ' && *f != '\t' && *f != ',' && *f != ':') {
+            PyErr_SetString(PyExc_SystemError,
+                            "Unmatched paren in format");
+            return 0;
+        }
+        f++;
+    }
+    if (endchar) {
+        f++;
+    }
+    *p_format = f;
+    return 1;
+}
 
 static void
-do_ignore(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int flags)
+do_ignore(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n)
 {
     assert(PyErr_Occurred());
     PyObject *v = PyTuple_New(n);
     for (Py_ssize_t i = 0; i < n; i++) {
         PyObject *exc = PyErr_GetRaisedException();
-        PyObject *w = do_mkvalue(p_format, p_va, flags);
+        PyObject *w = do_mkvalue(p_format, p_va);
         PyErr_SetRaisedException(exc);
         if (w != NULL) {
             if (v != NULL) {
@@ -110,18 +126,13 @@ do_ignore(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int
         }
     }
     Py_XDECREF(v);
-    if (**p_format != endchar) {
-        PyErr_SetString(PyExc_SystemError,
-                        "Unmatched paren in format");
+    if (!check_end(p_format, endchar)) {
         return;
     }
-    if (endchar) {
-        ++*p_format;
-    }
 }
 
 static PyObject *
-do_mkdict(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int flags)
+do_mkdict(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n)
 {
     PyObject *d;
     Py_ssize_t i;
@@ -130,27 +141,27 @@ do_mkdict(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int
     if (n % 2) {
         PyErr_SetString(PyExc_SystemError,
                         "Bad dict format");
-        do_ignore(p_format, p_va, endchar, n, flags);
+        do_ignore(p_format, p_va, endchar, n);
         return NULL;
     }
     /* Note that we can't bail immediately on error as this will leak
        refcounts on any 'N' arguments. */
     if ((d = PyDict_New()) == NULL) {
-        do_ignore(p_format, p_va, endchar, n, flags);
+        do_ignore(p_format, p_va, endchar, n);
         return NULL;
     }
     for (i = 0; i < n; i+= 2) {
         PyObject *k, *v;
 
-        k = do_mkvalue(p_format, p_va, flags);
+        k = do_mkvalue(p_format, p_va);
         if (k == NULL) {
-            do_ignore(p_format, p_va, endchar, n - i - 1, flags);
+            do_ignore(p_format, p_va, endchar, n - i - 1);
             Py_DECREF(d);
             return NULL;
         }
-        v = do_mkvalue(p_format, p_va, flags);
+        v = do_mkvalue(p_format, p_va);
         if (v == NULL || PyDict_SetItem(d, k, v) < 0) {
-            do_ignore(p_format, p_va, endchar, n - i - 2, flags);
+            do_ignore(p_format, p_va, endchar, n - i - 2);
             Py_DECREF(k);
             Py_XDECREF(v);
             Py_DECREF(d);
@@ -159,19 +170,15 @@ do_mkdict(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int
         Py_DECREF(k);
         Py_DECREF(v);
     }
-    if (**p_format != endchar) {
+    if (!check_end(p_format, endchar)) {
         Py_DECREF(d);
-        PyErr_SetString(PyExc_SystemError,
-                        "Unmatched paren in format");
         return NULL;
     }
-    if (endchar)
-        ++*p_format;
     return d;
 }
 
 static PyObject *
-do_mklist(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int flags)
+do_mklist(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n)
 {
     PyObject *v;
     Py_ssize_t i;
@@ -181,32 +188,28 @@ do_mklist(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int
        refcounts on any 'N' arguments. */
     v = PyList_New(n);
     if (v == NULL) {
-        do_ignore(p_format, p_va, endchar, n, flags);
+        do_ignore(p_format, p_va, endchar, n);
         return NULL;
     }
     for (i = 0; i < n; i++) {
-        PyObject *w = do_mkvalue(p_format, p_va, flags);
+        PyObject *w = do_mkvalue(p_format, p_va);
         if (w == NULL) {
-            do_ignore(p_format, p_va, endchar, n - i - 1, flags);
+            do_ignore(p_format, p_va, endchar, n - i - 1);
             Py_DECREF(v);
             return NULL;
         }
         PyList_SET_ITEM(v, i, w);
     }
-    if (**p_format != endchar) {
+    if (!check_end(p_format, endchar)) {
         Py_DECREF(v);
-        PyErr_SetString(PyExc_SystemError,
-                        "Unmatched paren in format");
         return NULL;
     }
-    if (endchar)
-        ++*p_format;
     return v;
 }
 
 static int
 do_mkstack(PyObject **stack, const char **p_format, va_list *p_va,
-           char endchar, Py_ssize_t n, int flags)
+           char endchar, Py_ssize_t n)
 {
     Py_ssize_t i;
 
@@ -216,21 +219,16 @@ do_mkstack(PyObject **stack, const char **p_format, va_list *p_va,
     /* Note that we can't bail immediately on error as this will leak
        refcounts on any 'N' arguments. */
     for (i = 0; i < n; i++) {
-        PyObject *w = do_mkvalue(p_format, p_va, flags);
+        PyObject *w = do_mkvalue(p_format, p_va);
         if (w == NULL) {
-            do_ignore(p_format, p_va, endchar, n - i - 1, flags);
+            do_ignore(p_format, p_va, endchar, n - i - 1);
             goto error;
         }
         stack[i] = w;
     }
-    if (**p_format != endchar) {
-        PyErr_SetString(PyExc_SystemError,
-                        "Unmatched paren in format");
+    if (!check_end(p_format, endchar)) {
         goto error;
     }
-    if (endchar) {
-        ++*p_format;
-    }
     return 0;
 
 error:
@@ -242,7 +240,7 @@ do_mkstack(PyObject **stack, const char **p_format, va_list *p_va,
 }
 
 static PyObject *
-do_mktuple(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int flags)
+do_mktuple(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n)
 {
     PyObject *v;
     Py_ssize_t i;
@@ -251,52 +249,41 @@ do_mktuple(const char **p_format, va_list *p_va, char endchar, Py_ssize_t n, int
     /* Note that we can't bail immediately on error as this will leak
        refcounts on any 'N' arguments. */
     if ((v = PyTuple_New(n)) == NULL) {
-        do_ignore(p_format, p_va, endchar, n, flags);
+        do_ignore(p_format, p_va, endchar, n);
         return NULL;
     }
     for (i = 0; i < n; i++) {
-        PyObject *w = do_mkvalue(p_format, p_va, flags);
+        PyObject *w = do_mkvalue(p_format, p_va);
         if (w == NULL) {
-            do_ignore(p_format, p_va, endchar, n - i - 1, flags);
+            do_ignore(p_format, p_va, endchar, n - i - 1);
             Py_DECREF(v);
             return NULL;
         }
         PyTuple_SET_ITEM(v, i, w);
     }
-    if (**p_format != endchar) {
+    if (!check_end(p_format, endchar)) {
         Py_DECREF(v);
-        PyErr_SetString(PyExc_SystemError,
-                        "Unmatched paren in format");
         return NULL;
     }
-    if (endchar)
-        ++*p_format;
     return v;
 }
 
 static PyObject *
-do_mkvalue(const char **p_format, va_list *p_va, int flags)
+do_mkvalue(const char **p_format, va_list *p_va)
 {
-#define ERROR_NEED_PY_SSIZE_T_CLEAN \
-    { \
-        PyErr_SetString(PyExc_SystemError, \
-                        "PY_SSIZE_T_CLEAN macro must be defined for '#' formats"); \
-        return NULL; \
-    }
-
     for (;;) {
         switch (*(*p_format)++) {
         case '(':
             return do_mktuple(p_format, p_va, ')',
-                              countformat(*p_format, ')'), flags);
+                              countformat(*p_format, ')'));
 
         case '[':
             return do_mklist(p_format, p_va, ']',
-                             countformat(*p_format, ']'), flags);
+                             countformat(*p_format, ']'));
 
         case '{':
             return do_mkdict(p_format, p_va, '}',
-                             countformat(*p_format, '}'), flags);
+                             countformat(*p_format, '}'));
 
         case 'b':
         case 'B':
@@ -338,17 +325,11 @@ do_mkvalue(const char **p_format, va_list *p_va, int flags)
         case 'u':
         {
             PyObject *v;
-            Py_UNICODE *u = va_arg(*p_va, Py_UNICODE *);
+            const wchar_t *u = va_arg(*p_va, wchar_t*);
             Py_ssize_t n;
             if (**p_format == '#') {
                 ++*p_format;
-                if (flags & FLAG_SIZE_T) {
-                    n = va_arg(*p_va, Py_ssize_t);
-                }
-                else {
-                    n = va_arg(*p_va, int);
-                    ERROR_NEED_PY_SSIZE_T_CLEAN;
-                }
+                n = va_arg(*p_va, Py_ssize_t);
             }
             else
                 n = -1;
@@ -392,13 +373,7 @@ do_mkvalue(const char **p_format, va_list *p_va, int flags)
             Py_ssize_t n;
             if (**p_format == '#') {
                 ++*p_format;
-                if (flags & FLAG_SIZE_T) {
-                    n = va_arg(*p_va, Py_ssize_t);
-                }
-                else {
-                    n = va_arg(*p_va, int);
-                    ERROR_NEED_PY_SSIZE_T_CLEAN;
-                }
+                n = va_arg(*p_va, Py_ssize_t);
             }
             else
                 n = -1;
@@ -427,13 +402,7 @@ do_mkvalue(const char **p_format, va_list *p_va, int flags)
             Py_ssize_t n;
             if (**p_format == '#') {
                 ++*p_format;
-                if (flags & FLAG_SIZE_T) {
-                    n = va_arg(*p_va, Py_ssize_t);
-                }
-                else {
-                    n = va_arg(*p_va, int);
-                    ERROR_NEED_PY_SSIZE_T_CLEAN;
-                }
+                n = va_arg(*p_va, Py_ssize_t);
             }
             else
                 n = -1;
@@ -499,8 +468,6 @@ do_mkvalue(const char **p_format, va_list *p_va, int flags)
 
         }
     }
-
-#undef ERROR_NEED_PY_SSIZE_T_CLEAN
 }
 
 
@@ -510,18 +477,18 @@ Py_BuildValue(const char *format, ...)
     va_list va;
     PyObject* retval;
     va_start(va, format);
-    retval = va_build_value(format, va, 0);
+    retval = va_build_value(format, va);
     va_end(va);
     return retval;
 }
 
-PyObject *
+PyAPI_FUNC(PyObject *) /* abi only */
 _Py_BuildValue_SizeT(const char *format, ...)
 {
     va_list va;
     PyObject* retval;
     va_start(va, format);
-    retval = va_build_value(format, va, FLAG_SIZE_T);
+    retval = va_build_value(format, va);
     va_end(va);
     return retval;
 }
@@ -529,17 +496,17 @@ _Py_BuildValue_SizeT(const char *format, ...)
 PyObject *
 Py_VaBuildValue(const char *format, va_list va)
 {
-    return va_build_value(format, va, 0);
+    return va_build_value(format, va);
 }
 
-PyObject *
+PyAPI_FUNC(PyObject *) /* abi only */
 _Py_VaBuildValue_SizeT(const char *format, va_list va)
 {
-    return va_build_value(format, va, FLAG_SIZE_T);
+    return va_build_value(format, va);
 }
 
 static PyObject *
-va_build_value(const char *format, va_list va, int flags)
+va_build_value(const char *format, va_list va)
 {
     const char *f = format;
     Py_ssize_t n = countformat(f, '\0');
@@ -553,9 +520,9 @@ va_build_value(const char *format, va_list va, int flags)
     }
     va_copy(lva, va);
     if (n == 1) {
-        retval = do_mkvalue(&f, &lva, flags);
+        retval = do_mkvalue(&f, &lva);
     } else {
-        retval = do_mktuple(&f, &lva, '\0', n, flags);
+        retval = do_mktuple(&f, &lva, '\0', n);
     }
     va_end(lva);
     return retval;
@@ -564,20 +531,6 @@ va_build_value(const char *format, va_list va, int flags)
 PyObject **
 _Py_VaBuildStack(PyObject **small_stack, Py_ssize_t small_stack_len,
                 const char *format, va_list va, Py_ssize_t *p_nargs)
-{
-    return va_build_stack(small_stack, small_stack_len, format, va, 0, p_nargs);
-}
-
-PyObject **
-_Py_VaBuildStack_SizeT(PyObject **small_stack, Py_ssize_t small_stack_len,
-                       const char *format, va_list va, Py_ssize_t *p_nargs)
-{
-    return va_build_stack(small_stack, small_stack_len, format, va, FLAG_SIZE_T, p_nargs);
-}
-
-static PyObject **
-va_build_stack(PyObject **small_stack, Py_ssize_t small_stack_len,
-               const char *format, va_list va, int flags, Py_ssize_t *p_nargs)
 {
     const char *f;
     Py_ssize_t n;
@@ -609,7 +562,7 @@ va_build_stack(PyObject **small_stack, Py_ssize_t small_stack_len,
 
     va_copy(lva, va);
     f = format;
-    res = do_mkstack(stack, &f, &lva, '\0', n, flags);
+    res = do_mkstack(stack, &f, &lva, '\0', n);
     va_end(lva);
 
     if (res < 0) {
@@ -649,13 +602,16 @@ PyModule_AddObjectRef(PyObject *mod, const char *name, PyObject *value)
                      PyModule_GetName(mod));
         return -1;
     }
-
-    if (PyDict_SetItemString(dict, name, value)) {
-        return -1;
-    }
-    return 0;
+    return PyDict_SetItemString(dict, name, value);
 }
 
+int
+PyModule_Add(PyObject *mod, const char *name, PyObject *value)
+{
+    int res = PyModule_AddObjectRef(mod, name, value);
+    Py_XDECREF(value);
+    return res;
+}
 
 int
 PyModule_AddObject(PyObject *mod, const char *name, PyObject *value)
@@ -670,25 +626,13 @@ PyModule_AddObject(PyObject *mod, const char *name, PyObject *value)
 int
 PyModule_AddIntConstant(PyObject *m, const char *name, long value)
 {
-    PyObject *obj = PyLong_FromLong(value);
-    if (!obj) {
-        return -1;
-    }
-    int res = PyModule_AddObjectRef(m, name, obj);
-    Py_DECREF(obj);
-    return res;
+    return PyModule_Add(m, name, PyLong_FromLong(value));
 }
 
 int
 PyModule_AddStringConstant(PyObject *m, const char *name, const char *value)
 {
-    PyObject *obj = PyUnicode_FromString(value);
-    if (!obj) {
-        return -1;
-    }
-    int res = PyModule_AddObjectRef(m, name, obj);
-    Py_DECREF(obj);
-    return res;
+    return PyModule_Add(m, name, PyUnicode_FromString(value));
 }
 
 int
diff --git a/Python/mystrtoul.c b/Python/mystrtoul.c
index e6fe154eed611a..fcd3e27f17f4e9 100644
--- a/Python/mystrtoul.c
+++ b/Python/mystrtoul.c
@@ -1,16 +1,22 @@
+// strtol() and strtoul(), renamed to avoid conflicts.
+//
+// API:
+//
+// - PyOS_strtol(): convert string to C long integer.
+// - PyOS_strtoul(): convert string to C unsigned long integer.
+
 #include "Python.h"
 #include "pycore_long.h"          // _PyLong_DigitValue
 
 #if defined(__sgi) && !defined(_SGI_MP_SOURCE)
-#define _SGI_MP_SOURCE
+#  define _SGI_MP_SOURCE
 #endif
 
 /* strtol and strtoul, renamed to avoid conflicts */
 
 
-#include <ctype.h>
 #ifdef HAVE_ERRNO_H
-#include <errno.h>
+#  include <errno.h>              // errno
 #endif
 
 /* Static overflow check values for bases 2 through 36.
@@ -75,7 +81,7 @@ static const int digitlimit[] = {
     14,  14, 14, 14, 13, 13, 13, 13, 13, 13,  /* 20 - 29 */
     13,  12, 12, 12, 12, 12, 12};             /* 30 - 36 */
 #else
-#error "Need table for SIZEOF_LONG"
+#  error "Need table for SIZEOF_LONG"
 #endif
 
 /*
diff --git a/Python/opcode_metadata.h b/Python/opcode_metadata.h
deleted file mode 100644
index ae68e045a6119f..00000000000000
--- a/Python/opcode_metadata.h
+++ /dev/null
@@ -1,986 +0,0 @@
-// This file is generated by Tools/cases_generator/generate_cases.py
-// from:
-//   Python/bytecodes.c
-// Do not edit!
-
-#ifndef NEED_OPCODE_METADATA
-extern int _PyOpcode_num_popped(int opcode, int oparg, bool jump);
-#else
-int
-_PyOpcode_num_popped(int opcode, int oparg, bool jump) {
-    switch(opcode) {
-        case NOP:
-            return 0;
-        case RESUME:
-            return 0;
-        case INSTRUMENTED_RESUME:
-            return 0;
-        case LOAD_CLOSURE:
-            return 0;
-        case LOAD_FAST_CHECK:
-            return 0;
-        case LOAD_FAST:
-            return 0;
-        case LOAD_FAST_AND_CLEAR:
-            return 0;
-        case LOAD_CONST:
-            return 0;
-        case STORE_FAST:
-            return 1;
-        case LOAD_FAST__LOAD_FAST:
-            return 0+0;
-        case LOAD_FAST__LOAD_CONST:
-            return 0+0;
-        case STORE_FAST__LOAD_FAST:
-            return 1+0;
-        case STORE_FAST__STORE_FAST:
-            return 1+1;
-        case LOAD_CONST__LOAD_FAST:
-            return 0+0;
-        case POP_TOP:
-            return 1;
-        case PUSH_NULL:
-            return 0;
-        case END_FOR:
-            return 1+1;
-        case INSTRUMENTED_END_FOR:
-            return 2;
-        case END_SEND:
-            return 2;
-        case INSTRUMENTED_END_SEND:
-            return 2;
-        case UNARY_NEGATIVE:
-            return 1;
-        case UNARY_NOT:
-            return 1;
-        case UNARY_INVERT:
-            return 1;
-        case BINARY_OP_MULTIPLY_INT:
-            return 2;
-        case BINARY_OP_MULTIPLY_FLOAT:
-            return 2;
-        case BINARY_OP_SUBTRACT_INT:
-            return 2;
-        case BINARY_OP_SUBTRACT_FLOAT:
-            return 2;
-        case BINARY_OP_ADD_UNICODE:
-            return 2;
-        case BINARY_OP_INPLACE_ADD_UNICODE:
-            return 2;
-        case BINARY_OP_ADD_FLOAT:
-            return 2;
-        case BINARY_OP_ADD_INT:
-            return 2;
-        case BINARY_SUBSCR:
-            return 2;
-        case BINARY_SLICE:
-            return 3;
-        case STORE_SLICE:
-            return 4;
-        case BINARY_SUBSCR_LIST_INT:
-            return 2;
-        case BINARY_SUBSCR_TUPLE_INT:
-            return 2;
-        case BINARY_SUBSCR_DICT:
-            return 2;
-        case BINARY_SUBSCR_GETITEM:
-            return 2;
-        case LIST_APPEND:
-            return (oparg-1) + 2;
-        case SET_ADD:
-            return (oparg-1) + 2;
-        case STORE_SUBSCR:
-            return 3;
-        case STORE_SUBSCR_LIST_INT:
-            return 3;
-        case STORE_SUBSCR_DICT:
-            return 3;
-        case DELETE_SUBSCR:
-            return 2;
-        case CALL_INTRINSIC_1:
-            return 1;
-        case CALL_INTRINSIC_2:
-            return 2;
-        case RAISE_VARARGS:
-            return oparg;
-        case INTERPRETER_EXIT:
-            return 1;
-        case RETURN_VALUE:
-            return 1;
-        case INSTRUMENTED_RETURN_VALUE:
-            return 1;
-        case RETURN_CONST:
-            return 0;
-        case INSTRUMENTED_RETURN_CONST:
-            return 0;
-        case GET_AITER:
-            return 1;
-        case GET_ANEXT:
-            return 1;
-        case GET_AWAITABLE:
-            return 1;
-        case SEND:
-            return 2;
-        case SEND_GEN:
-            return 2;
-        case INSTRUMENTED_YIELD_VALUE:
-            return 1;
-        case YIELD_VALUE:
-            return 1;
-        case POP_EXCEPT:
-            return 1;
-        case RERAISE:
-            return oparg + 1;
-        case END_ASYNC_FOR:
-            return 2;
-        case CLEANUP_THROW:
-            return 3;
-        case LOAD_ASSERTION_ERROR:
-            return 0;
-        case LOAD_BUILD_CLASS:
-            return 0;
-        case STORE_NAME:
-            return 1;
-        case DELETE_NAME:
-            return 0;
-        case UNPACK_SEQUENCE:
-            return 1;
-        case UNPACK_SEQUENCE_TWO_TUPLE:
-            return 1;
-        case UNPACK_SEQUENCE_TUPLE:
-            return 1;
-        case UNPACK_SEQUENCE_LIST:
-            return 1;
-        case UNPACK_EX:
-            return 1;
-        case STORE_ATTR:
-            return 2;
-        case DELETE_ATTR:
-            return 1;
-        case STORE_GLOBAL:
-            return 1;
-        case DELETE_GLOBAL:
-            return 0;
-        case LOAD_NAME:
-            return 0;
-        case LOAD_GLOBAL:
-            return 0;
-        case LOAD_GLOBAL_MODULE:
-            return 0;
-        case LOAD_GLOBAL_BUILTIN:
-            return 0;
-        case DELETE_FAST:
-            return 0;
-        case MAKE_CELL:
-            return 0;
-        case DELETE_DEREF:
-            return 0;
-        case LOAD_CLASSDEREF:
-            return 0;
-        case LOAD_DEREF:
-            return 0;
-        case STORE_DEREF:
-            return 1;
-        case COPY_FREE_VARS:
-            return 0;
-        case BUILD_STRING:
-            return oparg;
-        case BUILD_TUPLE:
-            return oparg;
-        case BUILD_LIST:
-            return oparg;
-        case LIST_EXTEND:
-            return (oparg-1) + 2;
-        case SET_UPDATE:
-            return (oparg-1) + 2;
-        case BUILD_SET:
-            return oparg;
-        case BUILD_MAP:
-            return oparg*2;
-        case SETUP_ANNOTATIONS:
-            return 0;
-        case BUILD_CONST_KEY_MAP:
-            return oparg + 1;
-        case DICT_UPDATE:
-            return 1;
-        case DICT_MERGE:
-            return 1;
-        case MAP_ADD:
-            return 2;
-        case LOAD_SUPER_ATTR:
-            return 3;
-        case LOAD_SUPER_ATTR_ATTR:
-            return 3;
-        case LOAD_SUPER_ATTR_METHOD:
-            return 3;
-        case LOAD_ATTR:
-            return 1;
-        case LOAD_ATTR_INSTANCE_VALUE:
-            return 1;
-        case LOAD_ATTR_MODULE:
-            return 1;
-        case LOAD_ATTR_WITH_HINT:
-            return 1;
-        case LOAD_ATTR_SLOT:
-            return 1;
-        case LOAD_ATTR_CLASS:
-            return 1;
-        case LOAD_ATTR_PROPERTY:
-            return 1;
-        case LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN:
-            return 1;
-        case STORE_ATTR_INSTANCE_VALUE:
-            return 2;
-        case STORE_ATTR_WITH_HINT:
-            return 2;
-        case STORE_ATTR_SLOT:
-            return 2;
-        case COMPARE_OP:
-            return 2;
-        case COMPARE_OP_FLOAT:
-            return 2;
-        case COMPARE_OP_INT:
-            return 2;
-        case COMPARE_OP_STR:
-            return 2;
-        case IS_OP:
-            return 2;
-        case CONTAINS_OP:
-            return 2;
-        case CHECK_EG_MATCH:
-            return 2;
-        case CHECK_EXC_MATCH:
-            return 2;
-        case IMPORT_NAME:
-            return 2;
-        case IMPORT_FROM:
-            return 1;
-        case JUMP_FORWARD:
-            return 0;
-        case JUMP_BACKWARD:
-            return 0;
-        case POP_JUMP_IF_FALSE:
-            return 1;
-        case POP_JUMP_IF_TRUE:
-            return 1;
-        case POP_JUMP_IF_NOT_NONE:
-            return 1;
-        case POP_JUMP_IF_NONE:
-            return 1;
-        case JUMP_BACKWARD_NO_INTERRUPT:
-            return 0;
-        case GET_LEN:
-            return 1;
-        case MATCH_CLASS:
-            return 3;
-        case MATCH_MAPPING:
-            return 1;
-        case MATCH_SEQUENCE:
-            return 1;
-        case MATCH_KEYS:
-            return 2;
-        case GET_ITER:
-            return 1;
-        case GET_YIELD_FROM_ITER:
-            return 1;
-        case FOR_ITER:
-            return 1;
-        case INSTRUMENTED_FOR_ITER:
-            return 0;
-        case FOR_ITER_LIST:
-            return 1;
-        case FOR_ITER_TUPLE:
-            return 1;
-        case FOR_ITER_RANGE:
-            return 1;
-        case FOR_ITER_GEN:
-            return 1;
-        case BEFORE_ASYNC_WITH:
-            return 1;
-        case BEFORE_WITH:
-            return 1;
-        case WITH_EXCEPT_START:
-            return 4;
-        case PUSH_EXC_INFO:
-            return 1;
-        case LOAD_ATTR_METHOD_WITH_VALUES:
-            return 1;
-        case LOAD_ATTR_METHOD_NO_DICT:
-            return 1;
-        case LOAD_ATTR_METHOD_LAZY_DICT:
-            return 1;
-        case KW_NAMES:
-            return 0;
-        case INSTRUMENTED_CALL:
-            return 0;
-        case CALL:
-            return oparg + 2;
-        case CALL_BOUND_METHOD_EXACT_ARGS:
-            return oparg + 2;
-        case CALL_PY_EXACT_ARGS:
-            return oparg + 2;
-        case CALL_PY_WITH_DEFAULTS:
-            return oparg + 2;
-        case CALL_NO_KW_TYPE_1:
-            return oparg + 2;
-        case CALL_NO_KW_STR_1:
-            return oparg + 2;
-        case CALL_NO_KW_TUPLE_1:
-            return oparg + 2;
-        case CALL_BUILTIN_CLASS:
-            return oparg + 2;
-        case CALL_NO_KW_BUILTIN_O:
-            return oparg + 2;
-        case CALL_NO_KW_BUILTIN_FAST:
-            return oparg + 2;
-        case CALL_BUILTIN_FAST_WITH_KEYWORDS:
-            return oparg + 2;
-        case CALL_NO_KW_LEN:
-            return oparg + 2;
-        case CALL_NO_KW_ISINSTANCE:
-            return oparg + 2;
-        case CALL_NO_KW_LIST_APPEND:
-            return oparg + 2;
-        case CALL_NO_KW_METHOD_DESCRIPTOR_O:
-            return oparg + 2;
-        case CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS:
-            return oparg + 2;
-        case CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS:
-            return oparg + 2;
-        case CALL_NO_KW_METHOD_DESCRIPTOR_FAST:
-            return oparg + 2;
-        case INSTRUMENTED_CALL_FUNCTION_EX:
-            return 0;
-        case CALL_FUNCTION_EX:
-            return ((oparg & 1) ? 1 : 0) + 3;
-        case MAKE_FUNCTION:
-            return ((oparg & 0x01) ? 1 : 0) + ((oparg & 0x02) ? 1 : 0) + ((oparg & 0x04) ? 1 : 0) + ((oparg & 0x08) ? 1 : 0) + 1;
-        case RETURN_GENERATOR:
-            return 0;
-        case BUILD_SLICE:
-            return ((oparg == 3) ? 1 : 0) + 2;
-        case FORMAT_VALUE:
-            return (((oparg & FVS_MASK) == FVS_HAVE_SPEC) ? 1 : 0) + 1;
-        case COPY:
-            return (oparg-1) + 1;
-        case BINARY_OP:
-            return 2;
-        case SWAP:
-            return (oparg-2) + 2;
-        case INSTRUMENTED_INSTRUCTION:
-            return 0;
-        case INSTRUMENTED_JUMP_FORWARD:
-            return 0;
-        case INSTRUMENTED_JUMP_BACKWARD:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_TRUE:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_FALSE:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_NONE:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_NOT_NONE:
-            return 0;
-        case EXTENDED_ARG:
-            return 0;
-        case CACHE:
-            return 0;
-        case RESERVED:
-            return 0;
-        default:
-            return -1;
-    }
-}
-#endif
-
-#ifndef NEED_OPCODE_METADATA
-extern int _PyOpcode_num_pushed(int opcode, int oparg, bool jump);
-#else
-int
-_PyOpcode_num_pushed(int opcode, int oparg, bool jump) {
-    switch(opcode) {
-        case NOP:
-            return 0;
-        case RESUME:
-            return 0;
-        case INSTRUMENTED_RESUME:
-            return 0;
-        case LOAD_CLOSURE:
-            return 1;
-        case LOAD_FAST_CHECK:
-            return 1;
-        case LOAD_FAST:
-            return 1;
-        case LOAD_FAST_AND_CLEAR:
-            return 1;
-        case LOAD_CONST:
-            return 1;
-        case STORE_FAST:
-            return 0;
-        case LOAD_FAST__LOAD_FAST:
-            return 1+1;
-        case LOAD_FAST__LOAD_CONST:
-            return 1+1;
-        case STORE_FAST__LOAD_FAST:
-            return 0+1;
-        case STORE_FAST__STORE_FAST:
-            return 0+0;
-        case LOAD_CONST__LOAD_FAST:
-            return 1+1;
-        case POP_TOP:
-            return 0;
-        case PUSH_NULL:
-            return 1;
-        case END_FOR:
-            return 0+0;
-        case INSTRUMENTED_END_FOR:
-            return 0;
-        case END_SEND:
-            return 1;
-        case INSTRUMENTED_END_SEND:
-            return 1;
-        case UNARY_NEGATIVE:
-            return 1;
-        case UNARY_NOT:
-            return 1;
-        case UNARY_INVERT:
-            return 1;
-        case BINARY_OP_MULTIPLY_INT:
-            return 1;
-        case BINARY_OP_MULTIPLY_FLOAT:
-            return 1;
-        case BINARY_OP_SUBTRACT_INT:
-            return 1;
-        case BINARY_OP_SUBTRACT_FLOAT:
-            return 1;
-        case BINARY_OP_ADD_UNICODE:
-            return 1;
-        case BINARY_OP_INPLACE_ADD_UNICODE:
-            return 0;
-        case BINARY_OP_ADD_FLOAT:
-            return 1;
-        case BINARY_OP_ADD_INT:
-            return 1;
-        case BINARY_SUBSCR:
-            return 1;
-        case BINARY_SLICE:
-            return 1;
-        case STORE_SLICE:
-            return 0;
-        case BINARY_SUBSCR_LIST_INT:
-            return 1;
-        case BINARY_SUBSCR_TUPLE_INT:
-            return 1;
-        case BINARY_SUBSCR_DICT:
-            return 1;
-        case BINARY_SUBSCR_GETITEM:
-            return 1;
-        case LIST_APPEND:
-            return (oparg-1) + 1;
-        case SET_ADD:
-            return (oparg-1) + 1;
-        case STORE_SUBSCR:
-            return 0;
-        case STORE_SUBSCR_LIST_INT:
-            return 0;
-        case STORE_SUBSCR_DICT:
-            return 0;
-        case DELETE_SUBSCR:
-            return 0;
-        case CALL_INTRINSIC_1:
-            return 1;
-        case CALL_INTRINSIC_2:
-            return 1;
-        case RAISE_VARARGS:
-            return 0;
-        case INTERPRETER_EXIT:
-            return 0;
-        case RETURN_VALUE:
-            return 0;
-        case INSTRUMENTED_RETURN_VALUE:
-            return 0;
-        case RETURN_CONST:
-            return 0;
-        case INSTRUMENTED_RETURN_CONST:
-            return 0;
-        case GET_AITER:
-            return 1;
-        case GET_ANEXT:
-            return 2;
-        case GET_AWAITABLE:
-            return 1;
-        case SEND:
-            return 2;
-        case SEND_GEN:
-            return 2;
-        case INSTRUMENTED_YIELD_VALUE:
-            return 1;
-        case YIELD_VALUE:
-            return 1;
-        case POP_EXCEPT:
-            return 0;
-        case RERAISE:
-            return oparg;
-        case END_ASYNC_FOR:
-            return 0;
-        case CLEANUP_THROW:
-            return 2;
-        case LOAD_ASSERTION_ERROR:
-            return 1;
-        case LOAD_BUILD_CLASS:
-            return 1;
-        case STORE_NAME:
-            return 0;
-        case DELETE_NAME:
-            return 0;
-        case UNPACK_SEQUENCE:
-            return oparg;
-        case UNPACK_SEQUENCE_TWO_TUPLE:
-            return oparg;
-        case UNPACK_SEQUENCE_TUPLE:
-            return oparg;
-        case UNPACK_SEQUENCE_LIST:
-            return oparg;
-        case UNPACK_EX:
-            return (oparg & 0xFF) + (oparg >> 8) + 1;
-        case STORE_ATTR:
-            return 0;
-        case DELETE_ATTR:
-            return 0;
-        case STORE_GLOBAL:
-            return 0;
-        case DELETE_GLOBAL:
-            return 0;
-        case LOAD_NAME:
-            return 1;
-        case LOAD_GLOBAL:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_GLOBAL_MODULE:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_GLOBAL_BUILTIN:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case DELETE_FAST:
-            return 0;
-        case MAKE_CELL:
-            return 0;
-        case DELETE_DEREF:
-            return 0;
-        case LOAD_CLASSDEREF:
-            return 1;
-        case LOAD_DEREF:
-            return 1;
-        case STORE_DEREF:
-            return 0;
-        case COPY_FREE_VARS:
-            return 0;
-        case BUILD_STRING:
-            return 1;
-        case BUILD_TUPLE:
-            return 1;
-        case BUILD_LIST:
-            return 1;
-        case LIST_EXTEND:
-            return (oparg-1) + 1;
-        case SET_UPDATE:
-            return (oparg-1) + 1;
-        case BUILD_SET:
-            return 1;
-        case BUILD_MAP:
-            return 1;
-        case SETUP_ANNOTATIONS:
-            return 0;
-        case BUILD_CONST_KEY_MAP:
-            return 1;
-        case DICT_UPDATE:
-            return 0;
-        case DICT_MERGE:
-            return 0;
-        case MAP_ADD:
-            return 0;
-        case LOAD_SUPER_ATTR:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_SUPER_ATTR_ATTR:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_SUPER_ATTR_METHOD:
-            return 2;
-        case LOAD_ATTR:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_INSTANCE_VALUE:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_MODULE:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_WITH_HINT:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_SLOT:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_CLASS:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_PROPERTY:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case STORE_ATTR_INSTANCE_VALUE:
-            return 0;
-        case STORE_ATTR_WITH_HINT:
-            return 0;
-        case STORE_ATTR_SLOT:
-            return 0;
-        case COMPARE_OP:
-            return 1;
-        case COMPARE_OP_FLOAT:
-            return 1;
-        case COMPARE_OP_INT:
-            return 1;
-        case COMPARE_OP_STR:
-            return 1;
-        case IS_OP:
-            return 1;
-        case CONTAINS_OP:
-            return 1;
-        case CHECK_EG_MATCH:
-            return 2;
-        case CHECK_EXC_MATCH:
-            return 2;
-        case IMPORT_NAME:
-            return 1;
-        case IMPORT_FROM:
-            return 2;
-        case JUMP_FORWARD:
-            return 0;
-        case JUMP_BACKWARD:
-            return 0;
-        case POP_JUMP_IF_FALSE:
-            return 0;
-        case POP_JUMP_IF_TRUE:
-            return 0;
-        case POP_JUMP_IF_NOT_NONE:
-            return 0;
-        case POP_JUMP_IF_NONE:
-            return 0;
-        case JUMP_BACKWARD_NO_INTERRUPT:
-            return 0;
-        case GET_LEN:
-            return 2;
-        case MATCH_CLASS:
-            return 1;
-        case MATCH_MAPPING:
-            return 2;
-        case MATCH_SEQUENCE:
-            return 2;
-        case MATCH_KEYS:
-            return 3;
-        case GET_ITER:
-            return 1;
-        case GET_YIELD_FROM_ITER:
-            return 1;
-        case FOR_ITER:
-            return 2;
-        case INSTRUMENTED_FOR_ITER:
-            return 0;
-        case FOR_ITER_LIST:
-            return 2;
-        case FOR_ITER_TUPLE:
-            return 2;
-        case FOR_ITER_RANGE:
-            return 2;
-        case FOR_ITER_GEN:
-            return 2;
-        case BEFORE_ASYNC_WITH:
-            return 2;
-        case BEFORE_WITH:
-            return 2;
-        case WITH_EXCEPT_START:
-            return 5;
-        case PUSH_EXC_INFO:
-            return 2;
-        case LOAD_ATTR_METHOD_WITH_VALUES:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_METHOD_NO_DICT:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case LOAD_ATTR_METHOD_LAZY_DICT:
-            return ((oparg & 1) ? 1 : 0) + 1;
-        case KW_NAMES:
-            return 0;
-        case INSTRUMENTED_CALL:
-            return 0;
-        case CALL:
-            return 1;
-        case CALL_BOUND_METHOD_EXACT_ARGS:
-            return 1;
-        case CALL_PY_EXACT_ARGS:
-            return 1;
-        case CALL_PY_WITH_DEFAULTS:
-            return 1;
-        case CALL_NO_KW_TYPE_1:
-            return 1;
-        case CALL_NO_KW_STR_1:
-            return 1;
-        case CALL_NO_KW_TUPLE_1:
-            return 1;
-        case CALL_BUILTIN_CLASS:
-            return 1;
-        case CALL_NO_KW_BUILTIN_O:
-            return 1;
-        case CALL_NO_KW_BUILTIN_FAST:
-            return 1;
-        case CALL_BUILTIN_FAST_WITH_KEYWORDS:
-            return 1;
-        case CALL_NO_KW_LEN:
-            return 1;
-        case CALL_NO_KW_ISINSTANCE:
-            return 1;
-        case CALL_NO_KW_LIST_APPEND:
-            return 1;
-        case CALL_NO_KW_METHOD_DESCRIPTOR_O:
-            return 1;
-        case CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS:
-            return 1;
-        case CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS:
-            return 1;
-        case CALL_NO_KW_METHOD_DESCRIPTOR_FAST:
-            return 1;
-        case INSTRUMENTED_CALL_FUNCTION_EX:
-            return 0;
-        case CALL_FUNCTION_EX:
-            return 1;
-        case MAKE_FUNCTION:
-            return 1;
-        case RETURN_GENERATOR:
-            return 0;
-        case BUILD_SLICE:
-            return 1;
-        case FORMAT_VALUE:
-            return 1;
-        case COPY:
-            return (oparg-1) + 2;
-        case BINARY_OP:
-            return 1;
-        case SWAP:
-            return (oparg-2) + 2;
-        case INSTRUMENTED_INSTRUCTION:
-            return 0;
-        case INSTRUMENTED_JUMP_FORWARD:
-            return 0;
-        case INSTRUMENTED_JUMP_BACKWARD:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_TRUE:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_FALSE:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_NONE:
-            return 0;
-        case INSTRUMENTED_POP_JUMP_IF_NOT_NONE:
-            return 0;
-        case EXTENDED_ARG:
-            return 0;
-        case CACHE:
-            return 0;
-        case RESERVED:
-            return 0;
-        default:
-            return -1;
-    }
-}
-#endif
-
-enum InstructionFormat { INSTR_FMT_IB, INSTR_FMT_IBC, INSTR_FMT_IBC00, INSTR_FMT_IBC000, INSTR_FMT_IBC00000000, INSTR_FMT_IBIB, INSTR_FMT_IX, INSTR_FMT_IXC, INSTR_FMT_IXC000 };
-struct opcode_metadata {
-    bool valid_entry;
-    enum InstructionFormat instr_format;
-};
-
-#ifndef NEED_OPCODE_METADATA
-extern const struct opcode_metadata _PyOpcode_opcode_metadata[256];
-#else
-const struct opcode_metadata _PyOpcode_opcode_metadata[256] = {
-    [NOP] = { true, INSTR_FMT_IX },
-    [RESUME] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_RESUME] = { true, INSTR_FMT_IB },
-    [LOAD_CLOSURE] = { true, INSTR_FMT_IB },
-    [LOAD_FAST_CHECK] = { true, INSTR_FMT_IB },
-    [LOAD_FAST] = { true, INSTR_FMT_IB },
-    [LOAD_FAST_AND_CLEAR] = { true, INSTR_FMT_IB },
-    [LOAD_CONST] = { true, INSTR_FMT_IB },
-    [STORE_FAST] = { true, INSTR_FMT_IB },
-    [LOAD_FAST__LOAD_FAST] = { true, INSTR_FMT_IBIB },
-    [LOAD_FAST__LOAD_CONST] = { true, INSTR_FMT_IBIB },
-    [STORE_FAST__LOAD_FAST] = { true, INSTR_FMT_IBIB },
-    [STORE_FAST__STORE_FAST] = { true, INSTR_FMT_IBIB },
-    [LOAD_CONST__LOAD_FAST] = { true, INSTR_FMT_IBIB },
-    [POP_TOP] = { true, INSTR_FMT_IX },
-    [PUSH_NULL] = { true, INSTR_FMT_IX },
-    [END_FOR] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_END_FOR] = { true, INSTR_FMT_IX },
-    [END_SEND] = { true, INSTR_FMT_IX },
-    [INSTRUMENTED_END_SEND] = { true, INSTR_FMT_IX },
-    [UNARY_NEGATIVE] = { true, INSTR_FMT_IX },
-    [UNARY_NOT] = { true, INSTR_FMT_IX },
-    [UNARY_INVERT] = { true, INSTR_FMT_IX },
-    [BINARY_OP_MULTIPLY_INT] = { true, INSTR_FMT_IXC },
-    [BINARY_OP_MULTIPLY_FLOAT] = { true, INSTR_FMT_IXC },
-    [BINARY_OP_SUBTRACT_INT] = { true, INSTR_FMT_IXC },
-    [BINARY_OP_SUBTRACT_FLOAT] = { true, INSTR_FMT_IXC },
-    [BINARY_OP_ADD_UNICODE] = { true, INSTR_FMT_IXC },
-    [BINARY_OP_INPLACE_ADD_UNICODE] = { true, INSTR_FMT_IX },
-    [BINARY_OP_ADD_FLOAT] = { true, INSTR_FMT_IXC },
-    [BINARY_OP_ADD_INT] = { true, INSTR_FMT_IXC },
-    [BINARY_SUBSCR] = { true, INSTR_FMT_IXC },
-    [BINARY_SLICE] = { true, INSTR_FMT_IX },
-    [STORE_SLICE] = { true, INSTR_FMT_IX },
-    [BINARY_SUBSCR_LIST_INT] = { true, INSTR_FMT_IXC },
-    [BINARY_SUBSCR_TUPLE_INT] = { true, INSTR_FMT_IXC },
-    [BINARY_SUBSCR_DICT] = { true, INSTR_FMT_IXC },
-    [BINARY_SUBSCR_GETITEM] = { true, INSTR_FMT_IXC },
-    [LIST_APPEND] = { true, INSTR_FMT_IB },
-    [SET_ADD] = { true, INSTR_FMT_IB },
-    [STORE_SUBSCR] = { true, INSTR_FMT_IXC },
-    [STORE_SUBSCR_LIST_INT] = { true, INSTR_FMT_IXC },
-    [STORE_SUBSCR_DICT] = { true, INSTR_FMT_IXC },
-    [DELETE_SUBSCR] = { true, INSTR_FMT_IX },
-    [CALL_INTRINSIC_1] = { true, INSTR_FMT_IB },
-    [CALL_INTRINSIC_2] = { true, INSTR_FMT_IB },
-    [RAISE_VARARGS] = { true, INSTR_FMT_IB },
-    [INTERPRETER_EXIT] = { true, INSTR_FMT_IX },
-    [RETURN_VALUE] = { true, INSTR_FMT_IX },
-    [INSTRUMENTED_RETURN_VALUE] = { true, INSTR_FMT_IX },
-    [RETURN_CONST] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_RETURN_CONST] = { true, INSTR_FMT_IB },
-    [GET_AITER] = { true, INSTR_FMT_IX },
-    [GET_ANEXT] = { true, INSTR_FMT_IX },
-    [GET_AWAITABLE] = { true, INSTR_FMT_IB },
-    [SEND] = { true, INSTR_FMT_IBC },
-    [SEND_GEN] = { true, INSTR_FMT_IBC },
-    [INSTRUMENTED_YIELD_VALUE] = { true, INSTR_FMT_IX },
-    [YIELD_VALUE] = { true, INSTR_FMT_IX },
-    [POP_EXCEPT] = { true, INSTR_FMT_IX },
-    [RERAISE] = { true, INSTR_FMT_IB },
-    [END_ASYNC_FOR] = { true, INSTR_FMT_IX },
-    [CLEANUP_THROW] = { true, INSTR_FMT_IX },
-    [LOAD_ASSERTION_ERROR] = { true, INSTR_FMT_IX },
-    [LOAD_BUILD_CLASS] = { true, INSTR_FMT_IX },
-    [STORE_NAME] = { true, INSTR_FMT_IB },
-    [DELETE_NAME] = { true, INSTR_FMT_IB },
-    [UNPACK_SEQUENCE] = { true, INSTR_FMT_IBC },
-    [UNPACK_SEQUENCE_TWO_TUPLE] = { true, INSTR_FMT_IBC },
-    [UNPACK_SEQUENCE_TUPLE] = { true, INSTR_FMT_IBC },
-    [UNPACK_SEQUENCE_LIST] = { true, INSTR_FMT_IBC },
-    [UNPACK_EX] = { true, INSTR_FMT_IB },
-    [STORE_ATTR] = { true, INSTR_FMT_IBC000 },
-    [DELETE_ATTR] = { true, INSTR_FMT_IB },
-    [STORE_GLOBAL] = { true, INSTR_FMT_IB },
-    [DELETE_GLOBAL] = { true, INSTR_FMT_IB },
-    [LOAD_NAME] = { true, INSTR_FMT_IB },
-    [LOAD_GLOBAL] = { true, INSTR_FMT_IBC000 },
-    [LOAD_GLOBAL_MODULE] = { true, INSTR_FMT_IBC000 },
-    [LOAD_GLOBAL_BUILTIN] = { true, INSTR_FMT_IBC000 },
-    [DELETE_FAST] = { true, INSTR_FMT_IB },
-    [MAKE_CELL] = { true, INSTR_FMT_IB },
-    [DELETE_DEREF] = { true, INSTR_FMT_IB },
-    [LOAD_CLASSDEREF] = { true, INSTR_FMT_IB },
-    [LOAD_DEREF] = { true, INSTR_FMT_IB },
-    [STORE_DEREF] = { true, INSTR_FMT_IB },
-    [COPY_FREE_VARS] = { true, INSTR_FMT_IB },
-    [BUILD_STRING] = { true, INSTR_FMT_IB },
-    [BUILD_TUPLE] = { true, INSTR_FMT_IB },
-    [BUILD_LIST] = { true, INSTR_FMT_IB },
-    [LIST_EXTEND] = { true, INSTR_FMT_IB },
-    [SET_UPDATE] = { true, INSTR_FMT_IB },
-    [BUILD_SET] = { true, INSTR_FMT_IB },
-    [BUILD_MAP] = { true, INSTR_FMT_IB },
-    [SETUP_ANNOTATIONS] = { true, INSTR_FMT_IX },
-    [BUILD_CONST_KEY_MAP] = { true, INSTR_FMT_IB },
-    [DICT_UPDATE] = { true, INSTR_FMT_IB },
-    [DICT_MERGE] = { true, INSTR_FMT_IB },
-    [MAP_ADD] = { true, INSTR_FMT_IB },
-    [LOAD_SUPER_ATTR] = { true, INSTR_FMT_IBC },
-    [LOAD_SUPER_ATTR_ATTR] = { true, INSTR_FMT_IBC },
-    [LOAD_SUPER_ATTR_METHOD] = { true, INSTR_FMT_IBC },
-    [LOAD_ATTR] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_INSTANCE_VALUE] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_MODULE] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_WITH_HINT] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_SLOT] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_CLASS] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_PROPERTY] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = { true, INSTR_FMT_IBC00000000 },
-    [STORE_ATTR_INSTANCE_VALUE] = { true, INSTR_FMT_IXC000 },
-    [STORE_ATTR_WITH_HINT] = { true, INSTR_FMT_IBC000 },
-    [STORE_ATTR_SLOT] = { true, INSTR_FMT_IXC000 },
-    [COMPARE_OP] = { true, INSTR_FMT_IBC },
-    [COMPARE_OP_FLOAT] = { true, INSTR_FMT_IBC },
-    [COMPARE_OP_INT] = { true, INSTR_FMT_IBC },
-    [COMPARE_OP_STR] = { true, INSTR_FMT_IBC },
-    [IS_OP] = { true, INSTR_FMT_IB },
-    [CONTAINS_OP] = { true, INSTR_FMT_IB },
-    [CHECK_EG_MATCH] = { true, INSTR_FMT_IX },
-    [CHECK_EXC_MATCH] = { true, INSTR_FMT_IX },
-    [IMPORT_NAME] = { true, INSTR_FMT_IB },
-    [IMPORT_FROM] = { true, INSTR_FMT_IB },
-    [JUMP_FORWARD] = { true, INSTR_FMT_IB },
-    [JUMP_BACKWARD] = { true, INSTR_FMT_IB },
-    [POP_JUMP_IF_FALSE] = { true, INSTR_FMT_IB },
-    [POP_JUMP_IF_TRUE] = { true, INSTR_FMT_IB },
-    [POP_JUMP_IF_NOT_NONE] = { true, INSTR_FMT_IB },
-    [POP_JUMP_IF_NONE] = { true, INSTR_FMT_IB },
-    [JUMP_BACKWARD_NO_INTERRUPT] = { true, INSTR_FMT_IB },
-    [GET_LEN] = { true, INSTR_FMT_IX },
-    [MATCH_CLASS] = { true, INSTR_FMT_IB },
-    [MATCH_MAPPING] = { true, INSTR_FMT_IX },
-    [MATCH_SEQUENCE] = { true, INSTR_FMT_IX },
-    [MATCH_KEYS] = { true, INSTR_FMT_IX },
-    [GET_ITER] = { true, INSTR_FMT_IX },
-    [GET_YIELD_FROM_ITER] = { true, INSTR_FMT_IX },
-    [FOR_ITER] = { true, INSTR_FMT_IBC },
-    [INSTRUMENTED_FOR_ITER] = { true, INSTR_FMT_IB },
-    [FOR_ITER_LIST] = { true, INSTR_FMT_IBC },
-    [FOR_ITER_TUPLE] = { true, INSTR_FMT_IBC },
-    [FOR_ITER_RANGE] = { true, INSTR_FMT_IBC },
-    [FOR_ITER_GEN] = { true, INSTR_FMT_IBC },
-    [BEFORE_ASYNC_WITH] = { true, INSTR_FMT_IX },
-    [BEFORE_WITH] = { true, INSTR_FMT_IX },
-    [WITH_EXCEPT_START] = { true, INSTR_FMT_IX },
-    [PUSH_EXC_INFO] = { true, INSTR_FMT_IX },
-    [LOAD_ATTR_METHOD_WITH_VALUES] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_METHOD_NO_DICT] = { true, INSTR_FMT_IBC00000000 },
-    [LOAD_ATTR_METHOD_LAZY_DICT] = { true, INSTR_FMT_IBC00000000 },
-    [KW_NAMES] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_CALL] = { true, INSTR_FMT_IB },
-    [CALL] = { true, INSTR_FMT_IBC00 },
-    [CALL_BOUND_METHOD_EXACT_ARGS] = { true, INSTR_FMT_IBC00 },
-    [CALL_PY_EXACT_ARGS] = { true, INSTR_FMT_IBC00 },
-    [CALL_PY_WITH_DEFAULTS] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_TYPE_1] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_STR_1] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_TUPLE_1] = { true, INSTR_FMT_IBC00 },
-    [CALL_BUILTIN_CLASS] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_BUILTIN_O] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_BUILTIN_FAST] = { true, INSTR_FMT_IBC00 },
-    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_LEN] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_ISINSTANCE] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_LIST_APPEND] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_METHOD_DESCRIPTOR_O] = { true, INSTR_FMT_IBC00 },
-    [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS] = { true, INSTR_FMT_IBC00 },
-    [CALL_NO_KW_METHOD_DESCRIPTOR_FAST] = { true, INSTR_FMT_IBC00 },
-    [INSTRUMENTED_CALL_FUNCTION_EX] = { true, INSTR_FMT_IX },
-    [CALL_FUNCTION_EX] = { true, INSTR_FMT_IB },
-    [MAKE_FUNCTION] = { true, INSTR_FMT_IB },
-    [RETURN_GENERATOR] = { true, INSTR_FMT_IX },
-    [BUILD_SLICE] = { true, INSTR_FMT_IB },
-    [FORMAT_VALUE] = { true, INSTR_FMT_IB },
-    [COPY] = { true, INSTR_FMT_IB },
-    [BINARY_OP] = { true, INSTR_FMT_IBC },
-    [SWAP] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_INSTRUCTION] = { true, INSTR_FMT_IX },
-    [INSTRUMENTED_JUMP_FORWARD] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_JUMP_BACKWARD] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_POP_JUMP_IF_TRUE] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_POP_JUMP_IF_FALSE] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_POP_JUMP_IF_NONE] = { true, INSTR_FMT_IB },
-    [INSTRUMENTED_POP_JUMP_IF_NOT_NONE] = { true, INSTR_FMT_IB },
-    [EXTENDED_ARG] = { true, INSTR_FMT_IB },
-    [CACHE] = { true, INSTR_FMT_IX },
-    [RESERVED] = { true, INSTR_FMT_IX },
-};
-#endif
diff --git a/Python/opcode_targets.h b/Python/opcode_targets.h
index f2742f4ad1f20e..bcd6ea7564f9b3 100644
--- a/Python/opcode_targets.h
+++ b/Python/opcode_targets.h
@@ -1,195 +1,123 @@
 static void *opcode_targets[256] = {
     &&TARGET_CACHE,
-    &&TARGET_POP_TOP,
-    &&TARGET_PUSH_NULL,
-    &&TARGET_INTERPRETER_EXIT,
-    &&TARGET_END_FOR,
-    &&TARGET_END_SEND,
-    &&TARGET_BINARY_OP_ADD_FLOAT,
-    &&TARGET_BINARY_OP_ADD_INT,
-    &&TARGET_BINARY_OP_ADD_UNICODE,
-    &&TARGET_NOP,
+    &&TARGET_BEFORE_ASYNC_WITH,
+    &&TARGET_BEFORE_WITH,
     &&TARGET_BINARY_OP_INPLACE_ADD_UNICODE,
-    &&TARGET_UNARY_NEGATIVE,
-    &&TARGET_UNARY_NOT,
-    &&TARGET_BINARY_OP_MULTIPLY_FLOAT,
-    &&TARGET_BINARY_OP_MULTIPLY_INT,
-    &&TARGET_UNARY_INVERT,
-    &&TARGET_BINARY_OP_SUBTRACT_FLOAT,
-    &&TARGET_RESERVED,
-    &&TARGET_BINARY_OP_SUBTRACT_INT,
-    &&TARGET_BINARY_SUBSCR_DICT,
-    &&TARGET_BINARY_SUBSCR_GETITEM,
-    &&TARGET_BINARY_SUBSCR_LIST_INT,
-    &&TARGET_BINARY_SUBSCR_TUPLE_INT,
-    &&TARGET_CALL_PY_EXACT_ARGS,
-    &&TARGET_CALL_PY_WITH_DEFAULTS,
-    &&TARGET_BINARY_SUBSCR,
     &&TARGET_BINARY_SLICE,
-    &&TARGET_STORE_SLICE,
-    &&TARGET_CALL_BOUND_METHOD_EXACT_ARGS,
-    &&TARGET_CALL_BUILTIN_CLASS,
-    &&TARGET_GET_LEN,
-    &&TARGET_MATCH_MAPPING,
-    &&TARGET_MATCH_SEQUENCE,
-    &&TARGET_MATCH_KEYS,
-    &&TARGET_CALL_BUILTIN_FAST_WITH_KEYWORDS,
-    &&TARGET_PUSH_EXC_INFO,
-    &&TARGET_CHECK_EXC_MATCH,
+    &&TARGET_BINARY_SUBSCR,
     &&TARGET_CHECK_EG_MATCH,
-    &&TARGET_CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS,
-    &&TARGET_CALL_NO_KW_BUILTIN_FAST,
-    &&TARGET_CALL_NO_KW_BUILTIN_O,
-    &&TARGET_CALL_NO_KW_ISINSTANCE,
-    &&TARGET_CALL_NO_KW_LEN,
-    &&TARGET_CALL_NO_KW_LIST_APPEND,
-    &&TARGET_CALL_NO_KW_METHOD_DESCRIPTOR_FAST,
-    &&TARGET_CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS,
-    &&TARGET_CALL_NO_KW_METHOD_DESCRIPTOR_O,
-    &&TARGET_CALL_NO_KW_STR_1,
-    &&TARGET_CALL_NO_KW_TUPLE_1,
-    &&TARGET_WITH_EXCEPT_START,
-    &&TARGET_GET_AITER,
-    &&TARGET_GET_ANEXT,
-    &&TARGET_BEFORE_ASYNC_WITH,
-    &&TARGET_BEFORE_WITH,
-    &&TARGET_END_ASYNC_FOR,
+    &&TARGET_CHECK_EXC_MATCH,
     &&TARGET_CLEANUP_THROW,
-    &&TARGET_CALL_NO_KW_TYPE_1,
-    &&TARGET_COMPARE_OP_FLOAT,
-    &&TARGET_COMPARE_OP_INT,
-    &&TARGET_COMPARE_OP_STR,
-    &&TARGET_STORE_SUBSCR,
     &&TARGET_DELETE_SUBSCR,
-    &&TARGET_FOR_ITER_LIST,
-    &&TARGET_FOR_ITER_TUPLE,
-    &&TARGET_FOR_ITER_RANGE,
-    &&TARGET_FOR_ITER_GEN,
-    &&TARGET_LOAD_SUPER_ATTR_ATTR,
-    &&TARGET_LOAD_SUPER_ATTR_METHOD,
+    &&TARGET_END_ASYNC_FOR,
+    &&TARGET_END_FOR,
+    &&TARGET_END_SEND,
+    &&TARGET_EXIT_INIT_CHECK,
+    &&TARGET_FORMAT_SIMPLE,
+    &&TARGET_FORMAT_WITH_SPEC,
+    &&TARGET_GET_AITER,
+    &&TARGET_RESERVED,
+    &&TARGET_GET_ANEXT,
     &&TARGET_GET_ITER,
+    &&TARGET_GET_LEN,
     &&TARGET_GET_YIELD_FROM_ITER,
-    &&TARGET_LOAD_ATTR_CLASS,
-    &&TARGET_LOAD_BUILD_CLASS,
-    &&TARGET_LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN,
-    &&TARGET_LOAD_ATTR_INSTANCE_VALUE,
+    &&TARGET_INTERPRETER_EXIT,
     &&TARGET_LOAD_ASSERTION_ERROR,
+    &&TARGET_LOAD_BUILD_CLASS,
+    &&TARGET_LOAD_LOCALS,
+    &&TARGET_MAKE_FUNCTION,
+    &&TARGET_MATCH_KEYS,
+    &&TARGET_MATCH_MAPPING,
+    &&TARGET_MATCH_SEQUENCE,
+    &&TARGET_NOP,
+    &&TARGET_POP_EXCEPT,
+    &&TARGET_POP_TOP,
+    &&TARGET_PUSH_EXC_INFO,
+    &&TARGET_PUSH_NULL,
     &&TARGET_RETURN_GENERATOR,
-    &&TARGET_LOAD_ATTR_MODULE,
-    &&TARGET_LOAD_ATTR_PROPERTY,
-    &&TARGET_LOAD_ATTR_SLOT,
-    &&TARGET_LOAD_ATTR_WITH_HINT,
-    &&TARGET_LOAD_ATTR_METHOD_LAZY_DICT,
-    &&TARGET_LOAD_ATTR_METHOD_NO_DICT,
-    &&TARGET_LOAD_ATTR_METHOD_WITH_VALUES,
     &&TARGET_RETURN_VALUE,
-    &&TARGET_LOAD_CONST__LOAD_FAST,
     &&TARGET_SETUP_ANNOTATIONS,
-    &&TARGET_LOAD_FAST__LOAD_CONST,
-    &&TARGET_LOAD_FAST__LOAD_FAST,
-    &&TARGET_LOAD_GLOBAL_BUILTIN,
-    &&TARGET_POP_EXCEPT,
-    &&TARGET_STORE_NAME,
-    &&TARGET_DELETE_NAME,
-    &&TARGET_UNPACK_SEQUENCE,
-    &&TARGET_FOR_ITER,
-    &&TARGET_UNPACK_EX,
-    &&TARGET_STORE_ATTR,
-    &&TARGET_DELETE_ATTR,
-    &&TARGET_STORE_GLOBAL,
-    &&TARGET_DELETE_GLOBAL,
-    &&TARGET_SWAP,
-    &&TARGET_LOAD_CONST,
-    &&TARGET_LOAD_NAME,
-    &&TARGET_BUILD_TUPLE,
+    &&TARGET_STORE_SLICE,
+    &&TARGET_STORE_SUBSCR,
+    &&TARGET_TO_BOOL,
+    &&TARGET_UNARY_INVERT,
+    &&TARGET_UNARY_NEGATIVE,
+    &&TARGET_UNARY_NOT,
+    &&TARGET_WITH_EXCEPT_START,
+    &&TARGET_BINARY_OP,
+    &&TARGET_BUILD_CONST_KEY_MAP,
     &&TARGET_BUILD_LIST,
-    &&TARGET_BUILD_SET,
     &&TARGET_BUILD_MAP,
-    &&TARGET_LOAD_ATTR,
+    &&TARGET_BUILD_SET,
+    &&TARGET_BUILD_SLICE,
+    &&TARGET_BUILD_STRING,
+    &&TARGET_BUILD_TUPLE,
+    &&TARGET_CALL,
+    &&TARGET_CALL_FUNCTION_EX,
+    &&TARGET_CALL_INTRINSIC_1,
+    &&TARGET_CALL_INTRINSIC_2,
+    &&TARGET_CALL_KW,
     &&TARGET_COMPARE_OP,
-    &&TARGET_IMPORT_NAME,
-    &&TARGET_IMPORT_FROM,
-    &&TARGET_JUMP_FORWARD,
-    &&TARGET_LOAD_GLOBAL_MODULE,
-    &&TARGET_STORE_ATTR_INSTANCE_VALUE,
-    &&TARGET_STORE_ATTR_SLOT,
-    &&TARGET_POP_JUMP_IF_FALSE,
-    &&TARGET_POP_JUMP_IF_TRUE,
-    &&TARGET_LOAD_GLOBAL,
-    &&TARGET_IS_OP,
     &&TARGET_CONTAINS_OP,
-    &&TARGET_RERAISE,
+    &&TARGET_CONVERT_VALUE,
     &&TARGET_COPY,
-    &&TARGET_RETURN_CONST,
-    &&TARGET_BINARY_OP,
-    &&TARGET_SEND,
-    &&TARGET_LOAD_FAST,
-    &&TARGET_STORE_FAST,
+    &&TARGET_COPY_FREE_VARS,
+    &&TARGET_DELETE_ATTR,
+    &&TARGET_DELETE_DEREF,
     &&TARGET_DELETE_FAST,
-    &&TARGET_LOAD_FAST_CHECK,
-    &&TARGET_POP_JUMP_IF_NOT_NONE,
-    &&TARGET_POP_JUMP_IF_NONE,
-    &&TARGET_RAISE_VARARGS,
+    &&TARGET_DELETE_GLOBAL,
+    &&TARGET_DELETE_NAME,
+    &&TARGET_DICT_MERGE,
+    &&TARGET_DICT_UPDATE,
+    &&TARGET_ENTER_EXECUTOR,
+    &&TARGET_EXTENDED_ARG,
+    &&TARGET_FOR_ITER,
     &&TARGET_GET_AWAITABLE,
-    &&TARGET_MAKE_FUNCTION,
-    &&TARGET_BUILD_SLICE,
+    &&TARGET_IMPORT_FROM,
+    &&TARGET_IMPORT_NAME,
+    &&TARGET_IS_OP,
+    &&TARGET_JUMP_BACKWARD,
     &&TARGET_JUMP_BACKWARD_NO_INTERRUPT,
-    &&TARGET_MAKE_CELL,
-    &&TARGET_LOAD_CLOSURE,
+    &&TARGET_JUMP_FORWARD,
+    &&TARGET_LIST_APPEND,
+    &&TARGET_LIST_EXTEND,
+    &&TARGET_LOAD_ATTR,
+    &&TARGET_LOAD_CONST,
     &&TARGET_LOAD_DEREF,
-    &&TARGET_STORE_DEREF,
-    &&TARGET_DELETE_DEREF,
-    &&TARGET_JUMP_BACKWARD,
-    &&TARGET_LOAD_SUPER_ATTR,
-    &&TARGET_CALL_FUNCTION_EX,
+    &&TARGET_LOAD_FAST,
     &&TARGET_LOAD_FAST_AND_CLEAR,
-    &&TARGET_EXTENDED_ARG,
-    &&TARGET_LIST_APPEND,
-    &&TARGET_SET_ADD,
+    &&TARGET_LOAD_FAST_CHECK,
+    &&TARGET_LOAD_FAST_LOAD_FAST,
+    &&TARGET_LOAD_FROM_DICT_OR_DEREF,
+    &&TARGET_LOAD_FROM_DICT_OR_GLOBALS,
+    &&TARGET_LOAD_GLOBAL,
+    &&TARGET_LOAD_NAME,
+    &&TARGET_LOAD_SUPER_ATTR,
+    &&TARGET_MAKE_CELL,
     &&TARGET_MAP_ADD,
-    &&TARGET_LOAD_CLASSDEREF,
-    &&TARGET_COPY_FREE_VARS,
-    &&TARGET_YIELD_VALUE,
-    &&TARGET_RESUME,
     &&TARGET_MATCH_CLASS,
-    &&TARGET_STORE_ATTR_WITH_HINT,
-    &&TARGET_STORE_FAST__LOAD_FAST,
-    &&TARGET_FORMAT_VALUE,
-    &&TARGET_BUILD_CONST_KEY_MAP,
-    &&TARGET_BUILD_STRING,
-    &&TARGET_STORE_FAST__STORE_FAST,
-    &&TARGET_STORE_SUBSCR_DICT,
-    &&TARGET_STORE_SUBSCR_LIST_INT,
-    &&TARGET_UNPACK_SEQUENCE_LIST,
-    &&TARGET_LIST_EXTEND,
+    &&TARGET_POP_JUMP_IF_FALSE,
+    &&TARGET_POP_JUMP_IF_NONE,
+    &&TARGET_POP_JUMP_IF_NOT_NONE,
+    &&TARGET_POP_JUMP_IF_TRUE,
+    &&TARGET_RAISE_VARARGS,
+    &&TARGET_RERAISE,
+    &&TARGET_RETURN_CONST,
+    &&TARGET_SEND,
+    &&TARGET_SET_ADD,
+    &&TARGET_SET_FUNCTION_ATTRIBUTE,
     &&TARGET_SET_UPDATE,
-    &&TARGET_DICT_MERGE,
-    &&TARGET_DICT_UPDATE,
-    &&TARGET_UNPACK_SEQUENCE_TUPLE,
-    &&TARGET_UNPACK_SEQUENCE_TWO_TUPLE,
-    &&TARGET_SEND_GEN,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&TARGET_CALL,
-    &&TARGET_KW_NAMES,
-    &&TARGET_CALL_INTRINSIC_1,
-    &&TARGET_CALL_INTRINSIC_2,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
-    &&_unknown_opcode,
+    &&TARGET_STORE_ATTR,
+    &&TARGET_STORE_DEREF,
+    &&TARGET_STORE_FAST,
+    &&TARGET_STORE_FAST_LOAD_FAST,
+    &&TARGET_STORE_FAST_STORE_FAST,
+    &&TARGET_STORE_GLOBAL,
+    &&TARGET_STORE_NAME,
+    &&TARGET_SWAP,
+    &&TARGET_UNPACK_EX,
+    &&TARGET_UNPACK_SEQUENCE,
+    &&TARGET_YIELD_VALUE,
     &&_unknown_opcode,
     &&_unknown_opcode,
     &&_unknown_opcode,
@@ -220,6 +148,76 @@ static void *opcode_targets[256] = {
     &&_unknown_opcode,
     &&_unknown_opcode,
     &&_unknown_opcode,
+    &&TARGET_RESUME,
+    &&TARGET_BINARY_OP_ADD_FLOAT,
+    &&TARGET_BINARY_OP_ADD_INT,
+    &&TARGET_BINARY_OP_ADD_UNICODE,
+    &&TARGET_BINARY_OP_MULTIPLY_FLOAT,
+    &&TARGET_BINARY_OP_MULTIPLY_INT,
+    &&TARGET_BINARY_OP_SUBTRACT_FLOAT,
+    &&TARGET_BINARY_OP_SUBTRACT_INT,
+    &&TARGET_BINARY_SUBSCR_DICT,
+    &&TARGET_BINARY_SUBSCR_GETITEM,
+    &&TARGET_BINARY_SUBSCR_LIST_INT,
+    &&TARGET_BINARY_SUBSCR_STR_INT,
+    &&TARGET_BINARY_SUBSCR_TUPLE_INT,
+    &&TARGET_CALL_ALLOC_AND_ENTER_INIT,
+    &&TARGET_CALL_BOUND_METHOD_EXACT_ARGS,
+    &&TARGET_CALL_BUILTIN_CLASS,
+    &&TARGET_CALL_BUILTIN_FAST,
+    &&TARGET_CALL_BUILTIN_FAST_WITH_KEYWORDS,
+    &&TARGET_CALL_BUILTIN_O,
+    &&TARGET_CALL_ISINSTANCE,
+    &&TARGET_CALL_LEN,
+    &&TARGET_CALL_LIST_APPEND,
+    &&TARGET_CALL_METHOD_DESCRIPTOR_FAST,
+    &&TARGET_CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS,
+    &&TARGET_CALL_METHOD_DESCRIPTOR_NOARGS,
+    &&TARGET_CALL_METHOD_DESCRIPTOR_O,
+    &&TARGET_CALL_PY_EXACT_ARGS,
+    &&TARGET_CALL_PY_WITH_DEFAULTS,
+    &&TARGET_CALL_STR_1,
+    &&TARGET_CALL_TUPLE_1,
+    &&TARGET_CALL_TYPE_1,
+    &&TARGET_COMPARE_OP_FLOAT,
+    &&TARGET_COMPARE_OP_INT,
+    &&TARGET_COMPARE_OP_STR,
+    &&TARGET_FOR_ITER_GEN,
+    &&TARGET_FOR_ITER_LIST,
+    &&TARGET_FOR_ITER_RANGE,
+    &&TARGET_FOR_ITER_TUPLE,
+    &&TARGET_LOAD_ATTR_CLASS,
+    &&TARGET_LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN,
+    &&TARGET_LOAD_ATTR_INSTANCE_VALUE,
+    &&TARGET_LOAD_ATTR_METHOD_LAZY_DICT,
+    &&TARGET_LOAD_ATTR_METHOD_NO_DICT,
+    &&TARGET_LOAD_ATTR_METHOD_WITH_VALUES,
+    &&TARGET_LOAD_ATTR_MODULE,
+    &&TARGET_LOAD_ATTR_NONDESCRIPTOR_NO_DICT,
+    &&TARGET_LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES,
+    &&TARGET_LOAD_ATTR_PROPERTY,
+    &&TARGET_LOAD_ATTR_SLOT,
+    &&TARGET_LOAD_ATTR_WITH_HINT,
+    &&TARGET_LOAD_GLOBAL_BUILTIN,
+    &&TARGET_LOAD_GLOBAL_MODULE,
+    &&TARGET_LOAD_SUPER_ATTR_ATTR,
+    &&TARGET_LOAD_SUPER_ATTR_METHOD,
+    &&TARGET_RESUME_CHECK,
+    &&TARGET_SEND_GEN,
+    &&TARGET_STORE_ATTR_INSTANCE_VALUE,
+    &&TARGET_STORE_ATTR_SLOT,
+    &&TARGET_STORE_ATTR_WITH_HINT,
+    &&TARGET_STORE_SUBSCR_DICT,
+    &&TARGET_STORE_SUBSCR_LIST_INT,
+    &&TARGET_TO_BOOL_ALWAYS_TRUE,
+    &&TARGET_TO_BOOL_BOOL,
+    &&TARGET_TO_BOOL_INT,
+    &&TARGET_TO_BOOL_LIST,
+    &&TARGET_TO_BOOL_NONE,
+    &&TARGET_TO_BOOL_STR,
+    &&TARGET_UNPACK_SEQUENCE_LIST,
+    &&TARGET_UNPACK_SEQUENCE_TUPLE,
+    &&TARGET_UNPACK_SEQUENCE_TWO_TUPLE,
     &&_unknown_opcode,
     &&_unknown_opcode,
     &&_unknown_opcode,
@@ -237,22 +235,23 @@ static void *opcode_targets[256] = {
     &&_unknown_opcode,
     &&_unknown_opcode,
     &&_unknown_opcode,
-    &&TARGET_INSTRUMENTED_POP_JUMP_IF_NONE,
-    &&TARGET_INSTRUMENTED_POP_JUMP_IF_NOT_NONE,
     &&TARGET_INSTRUMENTED_RESUME,
-    &&TARGET_INSTRUMENTED_CALL,
+    &&TARGET_INSTRUMENTED_END_FOR,
+    &&TARGET_INSTRUMENTED_END_SEND,
     &&TARGET_INSTRUMENTED_RETURN_VALUE,
+    &&TARGET_INSTRUMENTED_RETURN_CONST,
     &&TARGET_INSTRUMENTED_YIELD_VALUE,
+    &&TARGET_INSTRUMENTED_LOAD_SUPER_ATTR,
+    &&TARGET_INSTRUMENTED_FOR_ITER,
+    &&TARGET_INSTRUMENTED_CALL,
+    &&TARGET_INSTRUMENTED_CALL_KW,
     &&TARGET_INSTRUMENTED_CALL_FUNCTION_EX,
+    &&TARGET_INSTRUMENTED_INSTRUCTION,
     &&TARGET_INSTRUMENTED_JUMP_FORWARD,
     &&TARGET_INSTRUMENTED_JUMP_BACKWARD,
-    &&TARGET_INSTRUMENTED_RETURN_CONST,
-    &&TARGET_INSTRUMENTED_FOR_ITER,
-    &&TARGET_INSTRUMENTED_POP_JUMP_IF_FALSE,
     &&TARGET_INSTRUMENTED_POP_JUMP_IF_TRUE,
-    &&TARGET_INSTRUMENTED_END_FOR,
-    &&TARGET_INSTRUMENTED_END_SEND,
-    &&TARGET_INSTRUMENTED_INSTRUCTION,
+    &&TARGET_INSTRUMENTED_POP_JUMP_IF_FALSE,
+    &&TARGET_INSTRUMENTED_POP_JUMP_IF_NONE,
+    &&TARGET_INSTRUMENTED_POP_JUMP_IF_NOT_NONE,
     &&TARGET_INSTRUMENTED_LINE,
-    &&_unknown_opcode
-};
+    &&_unknown_opcode};
diff --git a/Python/optimizer.c b/Python/optimizer.c
new file mode 100644
index 00000000000000..dd24fbebbfd2a9
--- /dev/null
+++ b/Python/optimizer.c
@@ -0,0 +1,1130 @@
+#include "Python.h"
+#include "opcode.h"
+#include "pycore_interp.h"
+#include "pycore_bitutils.h"        // _Py_popcount32()
+#include "pycore_opcode_metadata.h" // _PyOpcode_OpName()
+#include "pycore_opcode_utils.h"  // MAX_REAL_OPCODE
+#include "pycore_optimizer.h"     // _Py_uop_analyze_and_optimize()
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_uops.h"
+#include "cpython/optimizer.h"
+#include <stdbool.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#define MAX_EXECUTORS_SIZE 256
+
+static bool
+has_space_for_executor(PyCodeObject *code, _Py_CODEUNIT *instr)
+{
+    if (instr->op.code == ENTER_EXECUTOR) {
+        return true;
+    }
+    if (code->co_executors == NULL) {
+        return true;
+    }
+    return code->co_executors->size < MAX_EXECUTORS_SIZE;
+}
+
+static int32_t
+get_index_for_executor(PyCodeObject *code, _Py_CODEUNIT *instr)
+{
+    if (instr->op.code == ENTER_EXECUTOR) {
+        return instr->op.arg;
+    }
+    _PyExecutorArray *old = code->co_executors;
+    int size = 0;
+    int capacity = 0;
+    if (old != NULL) {
+        size = old->size;
+        capacity = old->capacity;
+        assert(size < MAX_EXECUTORS_SIZE);
+    }
+    assert(size <= capacity);
+    if (size == capacity) {
+        /* Array is full. Grow array */
+        int new_capacity = capacity ? capacity * 2 : 4;
+        _PyExecutorArray *new = PyMem_Realloc(
+            old,
+            offsetof(_PyExecutorArray, executors) +
+            new_capacity * sizeof(_PyExecutorObject *));
+        if (new == NULL) {
+            return -1;
+        }
+        new->capacity = new_capacity;
+        new->size = size;
+        code->co_executors = new;
+    }
+    assert(size < code->co_executors->capacity);
+    return size;
+}
+
+static void
+insert_executor(PyCodeObject *code, _Py_CODEUNIT *instr, int index, _PyExecutorObject *executor)
+{
+    Py_INCREF(executor);
+    if (instr->op.code == ENTER_EXECUTOR) {
+        assert(index == instr->op.arg);
+        _PyExecutorObject *old = code->co_executors->executors[index];
+        executor->vm_data.opcode = old->vm_data.opcode;
+        executor->vm_data.oparg = old->vm_data.oparg;
+        old->vm_data.opcode = 0;
+        code->co_executors->executors[index] = executor;
+        Py_DECREF(old);
+    }
+    else {
+        assert(code->co_executors->size == index);
+        assert(code->co_executors->capacity > index);
+        executor->vm_data.opcode = instr->op.code;
+        executor->vm_data.oparg = instr->op.arg;
+        code->co_executors->executors[index] = executor;
+        assert(index < MAX_EXECUTORS_SIZE);
+        instr->op.code = ENTER_EXECUTOR;
+        instr->op.arg = index;
+        code->co_executors->size++;
+    }
+    return;
+}
+
+int
+PyUnstable_Replace_Executor(PyCodeObject *code, _Py_CODEUNIT *instr, _PyExecutorObject *new)
+{
+    if (instr->op.code != ENTER_EXECUTOR) {
+        PyErr_Format(PyExc_ValueError, "No executor to replace");
+        return -1;
+    }
+    int index = instr->op.arg;
+    assert(index >= 0);
+    insert_executor(code, instr, index, new);
+    return 0;
+}
+
+static int
+error_optimize(
+    _PyOptimizerObject* self,
+    PyCodeObject *code,
+    _Py_CODEUNIT *instr,
+    _PyExecutorObject **exec,
+    int Py_UNUSED(stack_entries))
+{
+    assert(0);
+    PyErr_Format(PyExc_SystemError, "Should never call error_optimize");
+    return -1;
+}
+
+PyTypeObject _PyDefaultOptimizer_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    .tp_name = "noop_optimizer",
+    .tp_basicsize = sizeof(_PyOptimizerObject),
+    .tp_itemsize = 0,
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+};
+
+_PyOptimizerObject _PyOptimizer_Default = {
+    PyObject_HEAD_INIT(&_PyDefaultOptimizer_Type)
+    .optimize = error_optimize,
+    .resume_threshold = INT16_MAX,
+    .backedge_threshold = INT16_MAX,
+};
+
+_PyOptimizerObject *
+PyUnstable_GetOptimizer(void)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (interp->optimizer == &_PyOptimizer_Default) {
+        return NULL;
+    }
+    assert(interp->optimizer_backedge_threshold == interp->optimizer->backedge_threshold);
+    assert(interp->optimizer_resume_threshold == interp->optimizer->resume_threshold);
+    Py_INCREF(interp->optimizer);
+    return interp->optimizer;
+}
+
+void
+PyUnstable_SetOptimizer(_PyOptimizerObject *optimizer)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (optimizer == NULL) {
+        optimizer = &_PyOptimizer_Default;
+    }
+    _PyOptimizerObject *old = interp->optimizer;
+    Py_INCREF(optimizer);
+    interp->optimizer = optimizer;
+    interp->optimizer_backedge_threshold = optimizer->backedge_threshold;
+    interp->optimizer_resume_threshold = optimizer->resume_threshold;
+    Py_DECREF(old);
+}
+
+int
+_PyOptimizer_BackEdge(_PyInterpreterFrame *frame, _Py_CODEUNIT *src, _Py_CODEUNIT *dest, PyObject **stack_pointer)
+{
+    assert(src->op.code == JUMP_BACKWARD);
+    PyCodeObject *code = (PyCodeObject *)frame->f_executable;
+    assert(PyCode_Check(code));
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (!has_space_for_executor(code, src)) {
+        return 0;
+    }
+    _PyOptimizerObject *opt = interp->optimizer;
+    _PyExecutorObject *executor = NULL;
+    int err = opt->optimize(opt, code, dest, &executor, (int)(stack_pointer - _PyFrame_Stackbase(frame)));
+    if (err <= 0) {
+        assert(executor == NULL);
+        return err;
+    }
+    int index = get_index_for_executor(code, src);
+    if (index < 0) {
+        /* Out of memory. Don't raise and assume that the
+         * error will show up elsewhere.
+         *
+         * If an optimizer has already produced an executor,
+         * it might get confused by the executor disappearing,
+         * but there is not much we can do about that here. */
+        Py_DECREF(executor);
+        return 0;
+    }
+    insert_executor(code, src, index, executor);
+    Py_DECREF(executor);
+    return 1;
+}
+
+_PyExecutorObject *
+PyUnstable_GetExecutor(PyCodeObject *code, int offset)
+{
+    int code_len = (int)Py_SIZE(code);
+    for (int i = 0 ; i < code_len;) {
+        if (_PyCode_CODE(code)[i].op.code == ENTER_EXECUTOR && i*2 == offset) {
+            int oparg = _PyCode_CODE(code)[i].op.arg;
+            _PyExecutorObject *res = code->co_executors->executors[oparg];
+            Py_INCREF(res);
+            return res;
+        }
+        i += _PyInstruction_GetLength(code, i);
+    }
+    PyErr_SetString(PyExc_ValueError, "no executor at given byte offset");
+    return NULL;
+}
+
+/** Test support **/
+
+
+typedef struct {
+    _PyOptimizerObject base;
+    int64_t count;
+} _PyCounterOptimizerObject;
+
+typedef struct {
+    _PyExecutorObject executor;
+    _PyCounterOptimizerObject *optimizer;
+    _Py_CODEUNIT *next_instr;
+} _PyCounterExecutorObject;
+
+static void
+counter_dealloc(_PyCounterExecutorObject *self) {
+    _Py_ExecutorClear((_PyExecutorObject *)self);
+    Py_DECREF(self->optimizer);
+    PyObject_Free(self);
+}
+
+static PyObject *
+is_valid(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    return PyBool_FromLong(((_PyExecutorObject *)self)->vm_data.valid);
+}
+
+static PyMethodDef executor_methods[] = {
+    { "is_valid", is_valid, METH_NOARGS, NULL },
+    { NULL, NULL },
+};
+
+PyTypeObject _PyCounterExecutor_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    .tp_name = "counting_executor",
+    .tp_basicsize = sizeof(_PyCounterExecutorObject),
+    .tp_itemsize = 0,
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+    .tp_dealloc = (destructor)counter_dealloc,
+    .tp_methods = executor_methods,
+};
+
+static _PyInterpreterFrame *
+counter_execute(_PyExecutorObject *self, _PyInterpreterFrame *frame, PyObject **stack_pointer)
+{
+    ((_PyCounterExecutorObject *)self)->optimizer->count++;
+    _PyFrame_SetStackPointer(frame, stack_pointer);
+    frame->instr_ptr = ((_PyCounterExecutorObject *)self)->next_instr;
+    Py_DECREF(self);
+    return frame;
+}
+
+static int
+counter_optimize(
+    _PyOptimizerObject* self,
+    PyCodeObject *code,
+    _Py_CODEUNIT *instr,
+    _PyExecutorObject **exec_ptr,
+    int Py_UNUSED(curr_stackentries)
+)
+{
+    _PyCounterExecutorObject *executor = (_PyCounterExecutorObject *)_PyObject_New(&_PyCounterExecutor_Type);
+    if (executor == NULL) {
+        return -1;
+    }
+    executor->executor.execute = counter_execute;
+    Py_INCREF(self);
+    executor->optimizer = (_PyCounterOptimizerObject *)self;
+    executor->next_instr = instr;
+    *exec_ptr = (_PyExecutorObject *)executor;
+    _PyBloomFilter empty;
+    _Py_BloomFilter_Init(&empty);
+    _Py_ExecutorInit((_PyExecutorObject *)executor, &empty);
+    return 1;
+}
+
+static PyObject *
+counter_get_counter(PyObject *self, PyObject *args)
+{
+    return PyLong_FromLongLong(((_PyCounterOptimizerObject *)self)->count);
+}
+
+static PyMethodDef counter_optimizer_methods[] = {
+    { "get_count", counter_get_counter, METH_NOARGS, NULL },
+    { NULL, NULL },
+};
+
+PyTypeObject _PyCounterOptimizer_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    .tp_name = "Counter optimizer",
+    .tp_basicsize = sizeof(_PyCounterOptimizerObject),
+    .tp_itemsize = 0,
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+    .tp_methods = counter_optimizer_methods,
+    .tp_dealloc = (destructor)PyObject_Del,
+};
+
+PyObject *
+PyUnstable_Optimizer_NewCounter(void)
+{
+    _PyCounterOptimizerObject *opt = (_PyCounterOptimizerObject *)_PyObject_New(&_PyCounterOptimizer_Type);
+    if (opt == NULL) {
+        return NULL;
+    }
+    opt->base.optimize = counter_optimize;
+    opt->base.resume_threshold = INT16_MAX;
+    opt->base.backedge_threshold = 0;
+    opt->count = 0;
+    return (PyObject *)opt;
+}
+
+///////////////////// Experimental UOp Optimizer /////////////////////
+
+static void
+uop_dealloc(_PyUOpExecutorObject *self) {
+    _Py_ExecutorClear((_PyExecutorObject *)self);
+    PyObject_Free(self);
+}
+
+const char *
+_PyUOpName(int index)
+{
+    if (index <= MAX_REAL_OPCODE) {
+        return _PyOpcode_OpName[index];
+    }
+    return _PyOpcode_uop_name[index];
+}
+
+static Py_ssize_t
+uop_len(_PyUOpExecutorObject *self)
+{
+    return Py_SIZE(self);
+}
+
+static PyObject *
+uop_item(_PyUOpExecutorObject *self, Py_ssize_t index)
+{
+    Py_ssize_t len = uop_len(self);
+    if (index < 0 || index >= len) {
+        PyErr_SetNone(PyExc_IndexError);
+        return NULL;
+    }
+    const char *name = _PyUOpName(self->trace[index].opcode);
+    if (name == NULL) {
+        name = "<nil>";
+    }
+    PyObject *oname = _PyUnicode_FromASCII(name, strlen(name));
+    if (oname == NULL) {
+        return NULL;
+    }
+    PyObject *oparg = PyLong_FromUnsignedLong(self->trace[index].oparg);
+    if (oparg == NULL) {
+        Py_DECREF(oname);
+        return NULL;
+    }
+    PyObject *operand = PyLong_FromUnsignedLongLong(self->trace[index].operand);
+    if (operand == NULL) {
+        Py_DECREF(oparg);
+        Py_DECREF(oname);
+        return NULL;
+    }
+    PyObject *args[3] = { oname, oparg, operand };
+    return _PyTuple_FromArraySteal(args, 3);
+}
+
+PySequenceMethods uop_as_sequence = {
+    .sq_length = (lenfunc)uop_len,
+    .sq_item = (ssizeargfunc)uop_item,
+};
+
+PyTypeObject _PyUOpExecutor_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    .tp_name = "uop_executor",
+    .tp_basicsize = sizeof(_PyUOpExecutorObject) - sizeof(_PyUOpInstruction),
+    .tp_itemsize = sizeof(_PyUOpInstruction),
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+    .tp_dealloc = (destructor)uop_dealloc,
+    .tp_as_sequence = &uop_as_sequence,
+    .tp_methods = executor_methods,
+};
+
+/* TO DO -- Generate these tables */
+static const uint16_t
+_PyUOp_Replacements[OPCODE_METADATA_SIZE] = {
+    [_ITER_JUMP_RANGE] = _GUARD_NOT_EXHAUSTED_RANGE,
+    [_ITER_JUMP_LIST] = _GUARD_NOT_EXHAUSTED_LIST,
+    [_ITER_JUMP_TUPLE] = _GUARD_NOT_EXHAUSTED_TUPLE,
+    [_FOR_ITER] = _FOR_ITER_TIER_TWO,
+};
+
+static const uint16_t
+BRANCH_TO_GUARD[4][2] = {
+    [POP_JUMP_IF_FALSE - POP_JUMP_IF_FALSE][0] = _GUARD_IS_TRUE_POP,
+    [POP_JUMP_IF_FALSE - POP_JUMP_IF_FALSE][1] = _GUARD_IS_FALSE_POP,
+    [POP_JUMP_IF_TRUE - POP_JUMP_IF_FALSE][0] = _GUARD_IS_FALSE_POP,
+    [POP_JUMP_IF_TRUE - POP_JUMP_IF_FALSE][1] = _GUARD_IS_TRUE_POP,
+    [POP_JUMP_IF_NONE - POP_JUMP_IF_FALSE][0] = _GUARD_IS_NOT_NONE_POP,
+    [POP_JUMP_IF_NONE - POP_JUMP_IF_FALSE][1] = _GUARD_IS_NONE_POP,
+    [POP_JUMP_IF_NOT_NONE - POP_JUMP_IF_FALSE][0] = _GUARD_IS_NONE_POP,
+    [POP_JUMP_IF_NOT_NONE - POP_JUMP_IF_FALSE][1] = _GUARD_IS_NOT_NONE_POP,
+};
+
+#define TRACE_STACK_SIZE 5
+
+/* Returns 1 on success,
+ * 0 if it failed to produce a worthwhile trace,
+ * and -1 on an error.
+ */
+static int
+translate_bytecode_to_trace(
+    PyCodeObject *code,
+    _Py_CODEUNIT *instr,
+    _PyUOpInstruction *trace,
+    int buffer_size,
+    _PyBloomFilter *dependencies)
+{
+    PyCodeObject *initial_code = code;
+    _Py_BloomFilter_Add(dependencies, initial_code);
+    _Py_CODEUNIT *initial_instr = instr;
+    int trace_length = 0;
+    int max_length = buffer_size;
+    struct {
+        PyCodeObject *code;
+        _Py_CODEUNIT *instr;
+    } trace_stack[TRACE_STACK_SIZE];
+    int trace_stack_depth = 0;
+
+#ifdef Py_DEBUG
+    char *python_lltrace = Py_GETENV("PYTHON_LLTRACE");
+    int lltrace = 0;
+    if (python_lltrace != NULL && *python_lltrace >= '0') {
+        lltrace = *python_lltrace - '0';  // TODO: Parse an int and all that
+    }
+#endif
+
+#ifdef Py_DEBUG
+#define DPRINTF(level, ...) \
+    if (lltrace >= (level)) { printf(__VA_ARGS__); }
+#else
+#define DPRINTF(level, ...)
+#endif
+
+
+#define ADD_TO_TRACE(OPCODE, OPARG, OPERAND, TARGET) \
+    DPRINTF(2, \
+            "  ADD_TO_TRACE(%s, %d, %" PRIu64 ")\n", \
+            _PyUOpName(OPCODE), \
+            (OPARG), \
+            (uint64_t)(OPERAND)); \
+    assert(trace_length < max_length); \
+    trace[trace_length].opcode = (OPCODE); \
+    trace[trace_length].oparg = (OPARG); \
+    trace[trace_length].operand = (OPERAND); \
+    trace[trace_length].target = (TARGET); \
+    trace_length++;
+
+#define INSTR_IP(INSTR, CODE) \
+    ((uint32_t)((INSTR) - ((_Py_CODEUNIT *)(CODE)->co_code_adaptive)))
+
+// Reserve space for n uops
+#define RESERVE_RAW(n, opname) \
+    if (trace_length + (n) > max_length) { \
+        DPRINTF(2, "No room for %s (need %d, got %d)\n", \
+                (opname), (n), max_length - trace_length); \
+        OPT_STAT_INC(trace_too_long); \
+        goto done; \
+    }
+
+// Reserve space for N uops, plus 3 for _SET_IP, _CHECK_VALIDITY and _EXIT_TRACE
+#define RESERVE(needed) RESERVE_RAW((needed) + 3, _PyUOpName(opcode))
+
+// Trace stack operations (used by _PUSH_FRAME, _POP_FRAME)
+#define TRACE_STACK_PUSH() \
+    if (trace_stack_depth >= TRACE_STACK_SIZE) { \
+        DPRINTF(2, "Trace stack overflow\n"); \
+        OPT_STAT_INC(trace_stack_overflow); \
+        ADD_TO_TRACE(_EXIT_TRACE, 0, 0, 0); \
+        goto done; \
+    } \
+    trace_stack[trace_stack_depth].code = code; \
+    trace_stack[trace_stack_depth].instr = instr; \
+    trace_stack_depth++;
+#define TRACE_STACK_POP() \
+    if (trace_stack_depth <= 0) { \
+        Py_FatalError("Trace stack underflow\n"); \
+    } \
+    trace_stack_depth--; \
+    code = trace_stack[trace_stack_depth].code; \
+    instr = trace_stack[trace_stack_depth].instr;
+
+    DPRINTF(4,
+            "Optimizing %s (%s:%d) at byte offset %d\n",
+            PyUnicode_AsUTF8(code->co_qualname),
+            PyUnicode_AsUTF8(code->co_filename),
+            code->co_firstlineno,
+            2 * INSTR_IP(initial_instr, code));
+    uint32_t target = 0;
+top:  // Jump here after _PUSH_FRAME or likely branches
+    for (;;) {
+        target = INSTR_IP(instr, code);
+        RESERVE_RAW(3, "epilogue");  // Always need space for _SET_IP, _CHECK_VALIDITY and _EXIT_TRACE
+        ADD_TO_TRACE(_SET_IP, target, 0, target);
+        ADD_TO_TRACE(_CHECK_VALIDITY, 0, 0, target);
+
+        uint32_t opcode = instr->op.code;
+        uint32_t oparg = instr->op.arg;
+        uint32_t extras = 0;
+
+
+        if (opcode == EXTENDED_ARG) {
+            instr++;
+            extras += 1;
+            opcode = instr->op.code;
+            oparg = (oparg << 8) | instr->op.arg;
+            if (opcode == EXTENDED_ARG) {
+                instr--;
+                goto done;
+            }
+        }
+
+        if (opcode == ENTER_EXECUTOR) {
+            _PyExecutorObject *executor =
+                (_PyExecutorObject *)code->co_executors->executors[oparg&255];
+            opcode = executor->vm_data.opcode;
+            DPRINTF(2, "  * ENTER_EXECUTOR -> %s\n",  _PyOpcode_OpName[opcode]);
+            oparg = (oparg & 0xffffff00) | executor->vm_data.oparg;
+        }
+
+        switch (opcode) {
+            case POP_JUMP_IF_NONE:
+            case POP_JUMP_IF_NOT_NONE:
+            case POP_JUMP_IF_FALSE:
+            case POP_JUMP_IF_TRUE:
+            {
+                RESERVE(1);
+                int counter = instr[1].cache;
+                int bitcount = _Py_popcount32(counter);
+                int jump_likely = bitcount > 8;
+                uint32_t uopcode = BRANCH_TO_GUARD[opcode - POP_JUMP_IF_FALSE][jump_likely];
+                _Py_CODEUNIT *next_instr = instr + 1 + _PyOpcode_Caches[_PyOpcode_Deopt[opcode]];
+                DPRINTF(4, "%s(%d): counter=%x, bitcount=%d, likely=%d, uopcode=%s\n",
+                        _PyUOpName(opcode), oparg,
+                        counter, bitcount, jump_likely, _PyUOpName(uopcode));
+                ADD_TO_TRACE(uopcode, max_length, 0, target);
+                if (jump_likely) {
+                    _Py_CODEUNIT *target_instr = next_instr + oparg;
+                    DPRINTF(2, "Jump likely (%x = %d bits), continue at byte offset %d\n",
+                            instr[1].cache, bitcount, 2 * INSTR_IP(target_instr, code));
+                    instr = target_instr;
+                    goto top;
+                }
+                break;
+            }
+
+            case JUMP_BACKWARD:
+            {
+                if (instr + 2 - oparg == initial_instr && code == initial_code) {
+                    RESERVE(1);
+                    ADD_TO_TRACE(_JUMP_TO_TOP, 0, 0, 0);
+                }
+                else {
+                    OPT_STAT_INC(inner_loop);
+                    DPRINTF(2, "JUMP_BACKWARD not to top ends trace\n");
+                }
+                goto done;
+            }
+
+            case JUMP_FORWARD:
+            {
+                RESERVE(0);
+                // This will emit two _SET_IP instructions; leave it to the optimizer
+                instr += oparg;
+                break;
+            }
+
+            default:
+            {
+                const struct opcode_macro_expansion *expansion = &_PyOpcode_macro_expansion[opcode];
+                if (expansion->nuops > 0) {
+                    // Reserve space for nuops (+ _SET_IP + _EXIT_TRACE)
+                    int nuops = expansion->nuops;
+                    RESERVE(nuops);
+                    if (expansion->uops[nuops-1].uop == _POP_FRAME) {
+                        // Check for trace stack underflow now:
+                        // We can't bail e.g. in the middle of
+                        // LOAD_CONST + _POP_FRAME.
+                        if (trace_stack_depth == 0) {
+                            DPRINTF(2, "Trace stack underflow\n");
+                            OPT_STAT_INC(trace_stack_underflow);
+                            goto done;
+                        }
+                    }
+                    uint32_t orig_oparg = oparg;  // For OPARG_TOP/BOTTOM
+                    for (int i = 0; i < nuops; i++) {
+                        oparg = orig_oparg;
+                        uint32_t uop = expansion->uops[i].uop;
+                        uint64_t operand = 0;
+                        // Add one to account for the actual opcode/oparg pair:
+                        int offset = expansion->uops[i].offset + 1;
+                        switch (expansion->uops[i].size) {
+                            case OPARG_FULL:
+                                if (extras && OPCODE_HAS_JUMP(opcode)) {
+                                    if (opcode == JUMP_BACKWARD_NO_INTERRUPT) {
+                                        oparg -= extras;
+                                    }
+                                    else {
+                                        assert(opcode != JUMP_BACKWARD);
+                                        oparg += extras;
+                                    }
+                                }
+                                if (_PyUOp_Replacements[uop]) {
+                                    uop = _PyUOp_Replacements[uop];
+                                    if (uop == _FOR_ITER_TIER_TWO) {
+                                        target += 1 + INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1;
+                                        assert(_PyCode_CODE(code)[target-1].op.code == END_FOR ||
+                                               _PyCode_CODE(code)[target-1].op.code == INSTRUMENTED_END_FOR);
+                                    }
+                                }
+                                break;
+                            case OPARG_CACHE_1:
+                                operand = read_u16(&instr[offset].cache);
+                                break;
+                            case OPARG_CACHE_2:
+                                operand = read_u32(&instr[offset].cache);
+                                break;
+                            case OPARG_CACHE_4:
+                                operand = read_u64(&instr[offset].cache);
+                                break;
+                            case OPARG_TOP:  // First half of super-instr
+                                oparg = orig_oparg >> 4;
+                                break;
+                            case OPARG_BOTTOM:  // Second half of super-instr
+                                oparg = orig_oparg & 0xF;
+                                break;
+                            case OPARG_SAVE_RETURN_OFFSET:  // op=_SAVE_RETURN_OFFSET; oparg=return_offset
+                                oparg = offset;
+                                assert(uop == _SAVE_RETURN_OFFSET);
+                                break;
+
+                            default:
+                                fprintf(stderr,
+                                        "opcode=%d, oparg=%d; nuops=%d, i=%d; size=%d, offset=%d\n",
+                                        opcode, oparg, nuops, i,
+                                        expansion->uops[i].size,
+                                        expansion->uops[i].offset);
+                                Py_FatalError("garbled expansion");
+                        }
+                        ADD_TO_TRACE(uop, oparg, operand, target);
+                        if (uop == _POP_FRAME) {
+                            TRACE_STACK_POP();
+                            DPRINTF(2,
+                                "Returning to %s (%s:%d) at byte offset %d\n",
+                                PyUnicode_AsUTF8(code->co_qualname),
+                                PyUnicode_AsUTF8(code->co_filename),
+                                code->co_firstlineno,
+                                2 * INSTR_IP(instr, code));
+                            goto top;
+                        }
+                        if (uop == _PUSH_FRAME) {
+                            assert(i + 1 == nuops);
+                            int func_version_offset =
+                                offsetof(_PyCallCache, func_version)/sizeof(_Py_CODEUNIT)
+                                // Add one to account for the actual opcode/oparg pair:
+                                + 1;
+                            uint32_t func_version = read_u32(&instr[func_version_offset].cache);
+                            PyFunctionObject *func = _PyFunction_LookupByVersion(func_version);
+                            DPRINTF(3, "Function object: %p\n", func);
+                            if (func != NULL) {
+                                PyCodeObject *new_code = (PyCodeObject *)PyFunction_GET_CODE(func);
+                                if (new_code == code) {
+                                    // Recursive call, bail (we could be here forever).
+                                    DPRINTF(2, "Bailing on recursive call to %s (%s:%d)\n",
+                                            PyUnicode_AsUTF8(new_code->co_qualname),
+                                            PyUnicode_AsUTF8(new_code->co_filename),
+                                            new_code->co_firstlineno);
+                                    OPT_STAT_INC(recursive_call);
+                                    ADD_TO_TRACE(_EXIT_TRACE, 0, 0, 0);
+                                    goto done;
+                                }
+                                if (new_code->co_version != func_version) {
+                                    // func.__code__ was updated.
+                                    // Perhaps it may happen again, so don't bother tracing.
+                                    // TODO: Reason about this -- is it better to bail or not?
+                                    DPRINTF(2, "Bailing because co_version != func_version\n");
+                                    ADD_TO_TRACE(_EXIT_TRACE, 0, 0, 0);
+                                    goto done;
+                                }
+                                // Increment IP to the return address
+                                instr += _PyOpcode_Caches[_PyOpcode_Deopt[opcode]] + 1;
+                                TRACE_STACK_PUSH();
+                                _Py_BloomFilter_Add(dependencies, new_code);
+                                code = new_code;
+                                instr = _PyCode_CODE(code);
+                                DPRINTF(2,
+                                    "Continuing in %s (%s:%d) at byte offset %d\n",
+                                    PyUnicode_AsUTF8(code->co_qualname),
+                                    PyUnicode_AsUTF8(code->co_filename),
+                                    code->co_firstlineno,
+                                    2 * INSTR_IP(instr, code));
+                                goto top;
+                            }
+                            ADD_TO_TRACE(_EXIT_TRACE, 0, 0, 0);
+                            goto done;
+                        }
+                    }
+                    break;
+                }
+                DPRINTF(2, "Unsupported opcode %s\n", _PyUOpName(opcode));
+                OPT_UNSUPPORTED_OPCODE(opcode);
+                goto done;  // Break out of loop
+            }  // End default
+
+        }  // End switch (opcode)
+
+        instr++;
+        // Add cache size for opcode
+        instr += _PyOpcode_Caches[_PyOpcode_Deopt[opcode]];
+    }  // End for (;;)
+
+done:
+    while (trace_stack_depth > 0) {
+        TRACE_STACK_POP();
+    }
+    assert(code == initial_code);
+    // Skip short traces like _SET_IP, LOAD_FAST, _SET_IP, _EXIT_TRACE
+    if (trace_length > 4) {
+        ADD_TO_TRACE(_EXIT_TRACE, 0, 0, target);
+        DPRINTF(1,
+                "Created a trace for %s (%s:%d) at byte offset %d -- length %d\n",
+                PyUnicode_AsUTF8(code->co_qualname),
+                PyUnicode_AsUTF8(code->co_filename),
+                code->co_firstlineno,
+                2 * INSTR_IP(initial_instr, code),
+                trace_length);
+        OPT_HIST(trace_length + buffer_size - max_length, trace_length_hist);
+        return 1;
+    }
+    else {
+        OPT_STAT_INC(trace_too_short);
+        DPRINTF(4,
+                "No trace for %s (%s:%d) at byte offset %d\n",
+                PyUnicode_AsUTF8(code->co_qualname),
+                PyUnicode_AsUTF8(code->co_filename),
+                code->co_firstlineno,
+                2 * INSTR_IP(initial_instr, code));
+    }
+    return 0;
+
+#undef RESERVE
+#undef RESERVE_RAW
+#undef INSTR_IP
+#undef ADD_TO_TRACE
+#undef DPRINTF
+}
+
+#define UNSET_BIT(array, bit) (array[(bit)>>5] &= ~(1<<((bit)&31)))
+#define SET_BIT(array, bit) (array[(bit)>>5] |= (1<<((bit)&31)))
+#define BIT_IS_SET(array, bit) (array[(bit)>>5] & (1<<((bit)&31)))
+
+/* Count the number of used uops, and mark them in the bit vector `used`.
+ * This can be done in a single pass using simple reachability analysis,
+ * as there are no backward jumps.
+ * NOPs are excluded from the count.
+*/
+static int
+compute_used(_PyUOpInstruction *buffer, uint32_t *used)
+{
+    int count = 0;
+    SET_BIT(used, 0);
+    for (int i = 0; i < _Py_UOP_MAX_TRACE_LENGTH; i++) {
+        if (!BIT_IS_SET(used, i)) {
+            continue;
+        }
+        count++;
+        int opcode = buffer[i].opcode;
+        if (opcode == _JUMP_TO_TOP || opcode == _EXIT_TRACE) {
+            continue;
+        }
+        /* All other micro-ops fall through, so i+1 is reachable */
+        SET_BIT(used, i+1);
+        if (OPCODE_HAS_JUMP(opcode)) {
+            /* Mark target as reachable */
+            SET_BIT(used, buffer[i].oparg);
+        }
+        if (opcode == NOP) {
+            count--;
+            UNSET_BIT(used, i);
+        }
+    }
+    return count;
+}
+
+/* Makes an executor from a buffer of uops.
+ * Account for the buffer having gaps and NOPs by computing a "used"
+ * bit vector and only copying the used uops. Here "used" means reachable
+ * and not a NOP.
+ */
+static _PyExecutorObject *
+make_executor_from_uops(_PyUOpInstruction *buffer, _PyBloomFilter *dependencies)
+{
+    uint32_t used[(_Py_UOP_MAX_TRACE_LENGTH + 31)/32] = { 0 };
+    int length = compute_used(buffer, used);
+    _PyUOpExecutorObject *executor = PyObject_NewVar(_PyUOpExecutorObject, &_PyUOpExecutor_Type, length);
+    if (executor == NULL) {
+        return NULL;
+    }
+    int dest = length - 1;
+    /* Scan backwards, so that we see the destinations of jumps before the jumps themselves. */
+    for (int i = _Py_UOP_MAX_TRACE_LENGTH-1; i >= 0; i--) {
+        if (!BIT_IS_SET(used, i)) {
+            continue;
+        }
+        executor->trace[dest] = buffer[i];
+        int opcode = buffer[i].opcode;
+        if (opcode == _POP_JUMP_IF_FALSE ||
+            opcode == _POP_JUMP_IF_TRUE)
+        {
+            /* The oparg of the target will already have been set to its new offset */
+            int oparg = executor->trace[dest].oparg;
+            executor->trace[dest].oparg = buffer[oparg].oparg;
+        }
+        /* Set the oparg to be the destination offset,
+         * so that we can set the oparg of earlier jumps correctly. */
+        buffer[i].oparg = dest;
+        dest--;
+    }
+    assert(dest == -1);
+    executor->base.execute = _PyUOpExecute;
+    _Py_ExecutorInit((_PyExecutorObject *)executor, dependencies);
+#ifdef Py_DEBUG
+    char *python_lltrace = Py_GETENV("PYTHON_LLTRACE");
+    int lltrace = 0;
+    if (python_lltrace != NULL && *python_lltrace >= '0') {
+        lltrace = *python_lltrace - '0';  // TODO: Parse an int and all that
+    }
+    if (lltrace >= 2) {
+        printf("Optimized executor (length %d):\n", length);
+        for (int i = 0; i < length; i++) {
+            printf("%4d %s(%d, %d, %" PRIu64 ")\n",
+                   i,
+                   _PyUOpName(executor->trace[i].opcode),
+                   executor->trace[i].oparg,
+                   executor->trace[i].target,
+                   executor->trace[i].operand);
+        }
+    }
+#endif
+    return (_PyExecutorObject *)executor;
+}
+
+static int
+uop_optimize(
+    _PyOptimizerObject *self,
+    PyCodeObject *code,
+    _Py_CODEUNIT *instr,
+    _PyExecutorObject **exec_ptr,
+    int curr_stackentries)
+{
+    _PyBloomFilter dependencies;
+    _Py_BloomFilter_Init(&dependencies);
+    _PyUOpInstruction buffer[_Py_UOP_MAX_TRACE_LENGTH];
+    int err = translate_bytecode_to_trace(code, instr, buffer, _Py_UOP_MAX_TRACE_LENGTH, &dependencies);
+    if (err <= 0) {
+        // Error or nothing translated
+        return err;
+    }
+    OPT_STAT_INC(traces_created);
+    char *uop_optimize = Py_GETENV("PYTHONUOPSOPTIMIZE");
+    if (uop_optimize == NULL || *uop_optimize > '0') {
+        err = _Py_uop_analyze_and_optimize(code, buffer, _Py_UOP_MAX_TRACE_LENGTH, curr_stackentries);
+        if (err < 0) {
+            return -1;
+        }
+    }
+    _PyExecutorObject *executor = make_executor_from_uops(buffer, &dependencies);
+    if (executor == NULL) {
+        return -1;
+    }
+    OPT_HIST(Py_SIZE(executor), optimized_trace_length_hist);
+    *exec_ptr = executor;
+    return 1;
+}
+
+/* Dummy execute() function for UOp Executor.
+ * The actual implementation is inlined in ceval.c,
+ * in _PyEval_EvalFrameDefault(). */
+_PyInterpreterFrame *
+_PyUOpExecute(_PyExecutorObject *executor, _PyInterpreterFrame *frame, PyObject **stack_pointer)
+{
+    Py_FatalError("Tier 2 is now inlined into Tier 1");
+}
+
+static void
+uop_opt_dealloc(PyObject *self) {
+    PyObject_Free(self);
+}
+
+PyTypeObject _PyUOpOptimizer_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    .tp_name = "uop_optimizer",
+    .tp_basicsize = sizeof(_PyOptimizerObject),
+    .tp_itemsize = 0,
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
+    .tp_dealloc = uop_opt_dealloc,
+};
+
+PyObject *
+PyUnstable_Optimizer_NewUOpOptimizer(void)
+{
+    _PyOptimizerObject *opt = PyObject_New(_PyOptimizerObject, &_PyUOpOptimizer_Type);
+    if (opt == NULL) {
+        return NULL;
+    }
+    opt->optimize = uop_optimize;
+    opt->resume_threshold = INT16_MAX;
+    // Need at least 3 iterations to settle specializations.
+    // A few lower bits of the counter are reserved for other flags.
+    opt->backedge_threshold = 16 << OPTIMIZER_BITS_IN_COUNTER;
+    return (PyObject *)opt;
+}
+
+
+/*****************************************
+ *        Executor management
+ ****************************************/
+
+/* We use a bloomfilter with k = 6, m = 256
+ * The choice of k and the following constants
+ * could do with a more rigourous analysis,
+ * but here is a simple analysis:
+ *
+ * We want to keep the false positive rate low.
+ * For n = 5 (a trace depends on 5 objects),
+ * we expect 30 bits set, giving a false positive
+ * rate of (30/256)**6 == 2.5e-6 which is plenty
+ * good enough.
+ *
+ * However with n = 10 we expect 60 bits set (worst case),
+ * giving a false positive of (60/256)**6 == 0.0001
+ *
+ * We choose k = 6, rather than a higher number as
+ * it means the false positive rate grows slower for high n.
+ *
+ * n = 5, k = 6 => fp = 2.6e-6
+ * n = 5, k = 8 => fp = 3.5e-7
+ * n = 10, k = 6 => fp = 1.6e-4
+ * n = 10, k = 8 => fp = 0.9e-4
+ * n = 15, k = 6 => fp = 0.18%
+ * n = 15, k = 8 => fp = 0.23%
+ * n = 20, k = 6 => fp = 1.1%
+ * n = 20, k = 8 => fp = 2.3%
+ *
+ * The above analysis assumes perfect hash functions,
+ * but those don't exist, so the real false positive
+ * rates may be worse.
+ */
+
+#define K 6
+
+#define SEED 20221211
+
+/* TO DO -- Use more modern hash functions with better distribution of bits */
+static uint64_t
+address_to_hash(void *ptr) {
+    assert(ptr != NULL);
+    uint64_t uhash = SEED;
+    uintptr_t addr = (uintptr_t)ptr;
+    for (int i = 0; i < SIZEOF_VOID_P; i++) {
+        uhash ^= addr & 255;
+        uhash *= (uint64_t)_PyHASH_MULTIPLIER;
+        addr >>= 8;
+    }
+    return uhash;
+}
+
+void
+_Py_BloomFilter_Init(_PyBloomFilter *bloom)
+{
+    for (int i = 0; i < BLOOM_FILTER_WORDS; i++) {
+        bloom->bits[i] = 0;
+    }
+}
+
+/* We want K hash functions that each set 1 bit.
+ * A hash function that sets 1 bit in M bits can be trivially
+ * derived from a log2(M) bit hash function.
+ * So we extract 8 (log2(256)) bits at a time from
+ * the 64bit hash. */
+void
+_Py_BloomFilter_Add(_PyBloomFilter *bloom, void *ptr)
+{
+    uint64_t hash = address_to_hash(ptr);
+    assert(K <= 8);
+    for (int i = 0; i < K; i++) {
+        uint8_t bits = hash & 255;
+        bloom->bits[bits >> 5] |= (1 << (bits&31));
+        hash >>= 8;
+    }
+}
+
+static bool
+bloom_filter_may_contain(_PyBloomFilter *bloom, _PyBloomFilter *hashes)
+{
+    for (int i = 0; i < BLOOM_FILTER_WORDS; i++) {
+        if ((bloom->bits[i] & hashes->bits[i]) != hashes->bits[i]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+static void
+link_executor(_PyExecutorObject *executor)
+{
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyExecutorLinkListNode *links = &executor->vm_data.links;
+    _PyExecutorObject *head = interp->executor_list_head;
+    if (head == NULL) {
+        interp->executor_list_head = executor;
+        links->previous = NULL;
+        links->next = NULL;
+    }
+    else {
+        _PyExecutorObject *next = head->vm_data.links.next;
+        links->previous = head;
+        links->next = next;
+        if (next != NULL) {
+            next->vm_data.links.previous = executor;
+        }
+        head->vm_data.links.next = executor;
+    }
+    executor->vm_data.linked = true;
+    /* executor_list_head must be first in list */
+    assert(interp->executor_list_head->vm_data.links.previous == NULL);
+}
+
+static void
+unlink_executor(_PyExecutorObject *executor)
+{
+    if (!executor->vm_data.linked) {
+        return;
+    }
+    _PyExecutorLinkListNode *links = &executor->vm_data.links;
+    _PyExecutorObject *next = links->next;
+    _PyExecutorObject *prev = links->previous;
+    if (next != NULL) {
+        next->vm_data.links.previous = prev;
+    }
+    if (prev != NULL) {
+        prev->vm_data.links.next = next;
+    }
+    else {
+        // prev == NULL implies that executor is the list head
+        PyInterpreterState *interp = PyInterpreterState_Get();
+        assert(interp->executor_list_head == executor);
+        interp->executor_list_head = next;
+    }
+    executor->vm_data.linked = false;
+}
+
+/* This must be called by optimizers before using the executor */
+void
+_Py_ExecutorInit(_PyExecutorObject *executor, _PyBloomFilter *dependency_set)
+{
+    executor->vm_data.valid = true;
+    for (int i = 0; i < BLOOM_FILTER_WORDS; i++) {
+        executor->vm_data.bloom.bits[i] = dependency_set->bits[i];
+    }
+    link_executor(executor);
+}
+
+/* This must be called by executors during dealloc */
+void
+_Py_ExecutorClear(_PyExecutorObject *executor)
+{
+    unlink_executor(executor);
+}
+
+void
+_Py_Executor_DependsOn(_PyExecutorObject *executor, void *obj)
+{
+    assert(executor->vm_data.valid = true);
+    _Py_BloomFilter_Add(&executor->vm_data.bloom, obj);
+}
+
+/* Invalidate all executors that depend on `obj`
+ * May cause other executors to be invalidated as well
+ */
+void
+_Py_Executors_InvalidateDependency(PyInterpreterState *interp, void *obj)
+{
+    _PyBloomFilter obj_filter;
+    _Py_BloomFilter_Init(&obj_filter);
+    _Py_BloomFilter_Add(&obj_filter, obj);
+    /* Walk the list of executors */
+    /* TO DO -- Use a tree to avoid traversing as many objects */
+    for (_PyExecutorObject *exec = interp->executor_list_head; exec != NULL;) {
+        assert(exec->vm_data.valid);
+        _PyExecutorObject *next = exec->vm_data.links.next;
+        if (bloom_filter_may_contain(&exec->vm_data.bloom, &obj_filter)) {
+            exec->vm_data.valid = false;
+            unlink_executor(exec);
+        }
+        exec = next;
+    }
+}
+
+/* Invalidate all executors */
+void
+_Py_Executors_InvalidateAll(PyInterpreterState *interp)
+{
+    /* Walk the list of executors */
+    for (_PyExecutorObject *exec = interp->executor_list_head; exec != NULL;) {
+        assert(exec->vm_data.valid);
+        _PyExecutorObject *next = exec->vm_data.links.next;
+        exec->vm_data.links.next = NULL;
+        exec->vm_data.links.previous = NULL;
+        exec->vm_data.valid = false;
+        exec->vm_data.linked = false;
+        exec = next;
+    }
+    interp->executor_list_head = NULL;
+}
diff --git a/Python/optimizer_analysis.c b/Python/optimizer_analysis.c
new file mode 100644
index 00000000000000..0f9bc085f22f1c
--- /dev/null
+++ b/Python/optimizer_analysis.c
@@ -0,0 +1,65 @@
+#include "Python.h"
+#include "opcode.h"
+#include "pycore_interp.h"
+#include "pycore_opcode_metadata.h"
+#include "pycore_opcode_utils.h"
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_uops.h"
+#include "pycore_long.h"
+#include "cpython/optimizer.h"
+#include <stdbool.h>
+#include <stdint.h>
+#include <stddef.h>
+#include "pycore_optimizer.h"
+
+static void
+remove_unneeded_uops(_PyUOpInstruction *buffer, int buffer_size)
+{
+    // Note that we don't enter stubs, those SET_IPs are needed.
+    int last_set_ip = -1;
+    bool maybe_invalid = false;
+    for (int pc = 0; pc < buffer_size; pc++) {
+        int opcode = buffer[pc].opcode;
+        if (opcode == _SET_IP) {
+            buffer[pc].opcode = NOP;
+            last_set_ip = pc;
+        }
+        else if (opcode == _CHECK_VALIDITY) {
+            if (maybe_invalid) {
+                maybe_invalid = false;
+            }
+            else {
+                buffer[pc].opcode = NOP;
+            }
+        }
+        else if (opcode == _JUMP_TO_TOP || opcode == _EXIT_TRACE) {
+            break;
+        }
+        else {
+            if (OPCODE_HAS_ESCAPES(opcode)) {
+                maybe_invalid = true;
+                if (last_set_ip >= 0) {
+                    buffer[last_set_ip].opcode = _SET_IP;
+                }
+            }
+            if (OPCODE_HAS_ERROR(opcode) || opcode == _PUSH_FRAME) {
+                if (last_set_ip >= 0) {
+                    buffer[last_set_ip].opcode = _SET_IP;
+                }
+            }
+        }
+    }
+}
+
+
+int
+_Py_uop_analyze_and_optimize(
+    PyCodeObject *co,
+    _PyUOpInstruction *buffer,
+    int buffer_size,
+    int curr_stacklen
+)
+{
+    remove_unneeded_uops(buffer, buffer_size);
+    return 0;
+}
diff --git a/Python/parking_lot.c b/Python/parking_lot.c
new file mode 100644
index 00000000000000..d44c1b4b93b4d2
--- /dev/null
+++ b/Python/parking_lot.c
@@ -0,0 +1,379 @@
+#include "Python.h"
+
+#include "pycore_llist.h"
+#include "pycore_lock.h"        // _PyRawMutex
+#include "pycore_parking_lot.h"
+#include "pycore_pyerrors.h"    // _Py_FatalErrorFormat
+#include "pycore_pystate.h"     // _PyThreadState_GET
+#include "pycore_semaphore.h"   // _PySemaphore
+
+#include <stdbool.h>
+
+
+typedef struct {
+    // The mutex protects the waiter queue and the num_waiters counter.
+    _PyRawMutex mutex;
+
+    // Linked list of `struct wait_entry` waiters in this bucket.
+    struct llist_node root;
+    size_t num_waiters;
+} Bucket;
+
+struct wait_entry {
+    void *park_arg;
+    uintptr_t addr;
+    _PySemaphore sema;
+    struct llist_node node;
+    bool is_unparking;
+};
+
+// Prime number to avoid correlations with memory addresses.
+// We want this to be roughly proportional to the number of CPU cores
+// to minimize contention on the bucket locks, but not too big to avoid
+// wasting memory. The exact choice does not matter much.
+#define NUM_BUCKETS 257
+
+#define BUCKET_INIT(b, i) [i] = { .root = LLIST_INIT(b[i].root) }
+#define BUCKET_INIT_2(b, i)   BUCKET_INIT(b, i),     BUCKET_INIT(b, i+1)
+#define BUCKET_INIT_4(b, i)   BUCKET_INIT_2(b, i),   BUCKET_INIT_2(b, i+2)
+#define BUCKET_INIT_8(b, i)   BUCKET_INIT_4(b, i),   BUCKET_INIT_4(b, i+4)
+#define BUCKET_INIT_16(b, i)  BUCKET_INIT_8(b, i),   BUCKET_INIT_8(b, i+8)
+#define BUCKET_INIT_32(b, i)  BUCKET_INIT_16(b, i),  BUCKET_INIT_16(b, i+16)
+#define BUCKET_INIT_64(b, i)  BUCKET_INIT_32(b, i),  BUCKET_INIT_32(b, i+32)
+#define BUCKET_INIT_128(b, i) BUCKET_INIT_64(b, i),  BUCKET_INIT_64(b, i+64)
+#define BUCKET_INIT_256(b, i) BUCKET_INIT_128(b, i), BUCKET_INIT_128(b, i+128)
+
+// Table of waiters (hashed by address)
+static Bucket buckets[NUM_BUCKETS] = {
+    BUCKET_INIT_256(buckets, 0),
+    BUCKET_INIT(buckets, 256),
+};
+
+void
+_PySemaphore_Init(_PySemaphore *sema)
+{
+#if defined(MS_WINDOWS)
+    sema->platform_sem = CreateSemaphore(
+        NULL,   //  attributes
+        0,      //  initial count
+        10,     //  maximum count
+        NULL    //  unnamed
+    );
+    if (!sema->platform_sem) {
+        Py_FatalError("parking_lot: CreateSemaphore failed");
+    }
+#elif defined(_Py_USE_SEMAPHORES)
+    if (sem_init(&sema->platform_sem, /*pshared=*/0, /*value=*/0) < 0) {
+        Py_FatalError("parking_lot: sem_init failed");
+    }
+#else
+    if (pthread_mutex_init(&sema->mutex, NULL) != 0) {
+        Py_FatalError("parking_lot: pthread_mutex_init failed");
+    }
+    if (pthread_cond_init(&sema->cond, NULL)) {
+        Py_FatalError("parking_lot: pthread_cond_init failed");
+    }
+    sema->counter = 0;
+#endif
+}
+
+void
+_PySemaphore_Destroy(_PySemaphore *sema)
+{
+#if defined(MS_WINDOWS)
+    CloseHandle(sema->platform_sem);
+#elif defined(_Py_USE_SEMAPHORES)
+    sem_destroy(&sema->platform_sem);
+#else
+    pthread_mutex_destroy(&sema->mutex);
+    pthread_cond_destroy(&sema->cond);
+#endif
+}
+
+static int
+_PySemaphore_PlatformWait(_PySemaphore *sema, _PyTime_t timeout)
+{
+    int res;
+#if defined(MS_WINDOWS)
+    DWORD wait;
+    DWORD millis = 0;
+    if (timeout < 0) {
+        millis = INFINITE;
+    }
+    else {
+        millis = (DWORD) (timeout / 1000000);
+    }
+    wait = WaitForSingleObjectEx(sema->platform_sem, millis, FALSE);
+    if (wait == WAIT_OBJECT_0) {
+        res = Py_PARK_OK;
+    }
+    else if (wait == WAIT_TIMEOUT) {
+        res = Py_PARK_TIMEOUT;
+    }
+    else {
+        res = Py_PARK_INTR;
+    }
+#elif defined(_Py_USE_SEMAPHORES)
+    int err;
+    if (timeout >= 0) {
+        struct timespec ts;
+
+#if defined(CLOCK_MONOTONIC) && defined(HAVE_SEM_CLOCKWAIT)
+        _PyTime_t deadline = _PyTime_Add(_PyTime_GetMonotonicClock(), timeout);
+
+        _PyTime_AsTimespec_clamp(deadline, &ts);
+
+        err = sem_clockwait(&sema->platform_sem, CLOCK_MONOTONIC, &ts);
+#else
+        _PyTime_t deadline = _PyTime_Add(_PyTime_GetSystemClock(), timeout);
+
+        _PyTime_AsTimespec_clamp(deadline, &ts);
+
+        err = sem_timedwait(&sema->platform_sem, &ts);
+#endif
+    }
+    else {
+        err = sem_wait(&sema->platform_sem);
+    }
+    if (err == -1) {
+        err = errno;
+        if (err == EINTR) {
+            res = Py_PARK_INTR;
+        }
+        else if (err == ETIMEDOUT) {
+            res = Py_PARK_TIMEOUT;
+        }
+        else {
+            _Py_FatalErrorFormat(__func__,
+                "unexpected error from semaphore: %d",
+                err);
+        }
+    }
+    else {
+        res = Py_PARK_OK;
+    }
+#else
+    pthread_mutex_lock(&sema->mutex);
+    int err = 0;
+    if (sema->counter == 0) {
+        if (timeout >= 0) {
+            struct timespec ts;
+
+            _PyTime_t deadline = _PyTime_Add(_PyTime_GetSystemClock(), timeout);
+            _PyTime_AsTimespec_clamp(deadline, &ts);
+
+            err = pthread_cond_timedwait(&sema->cond, &sema->mutex, &ts);
+        }
+        else {
+            err = pthread_cond_wait(&sema->cond, &sema->mutex);
+        }
+    }
+    if (sema->counter > 0) {
+        sema->counter--;
+        res = Py_PARK_OK;
+    }
+    else if (err) {
+        res = Py_PARK_TIMEOUT;
+    }
+    else {
+        res = Py_PARK_INTR;
+    }
+    pthread_mutex_unlock(&sema->mutex);
+#endif
+    return res;
+}
+
+int
+_PySemaphore_Wait(_PySemaphore *sema, _PyTime_t timeout, int detach)
+{
+    PyThreadState *tstate = NULL;
+    if (detach) {
+        tstate = _PyThreadState_GET();
+        if (tstate) {
+            PyEval_ReleaseThread(tstate);
+        }
+    }
+
+    int res = _PySemaphore_PlatformWait(sema, timeout);
+
+    if (detach && tstate) {
+        PyEval_AcquireThread(tstate);
+    }
+    return res;
+}
+
+void
+_PySemaphore_Wakeup(_PySemaphore *sema)
+{
+#if defined(MS_WINDOWS)
+    if (!ReleaseSemaphore(sema->platform_sem, 1, NULL)) {
+        Py_FatalError("parking_lot: ReleaseSemaphore failed");
+    }
+#elif defined(_Py_USE_SEMAPHORES)
+    int err = sem_post(&sema->platform_sem);
+    if (err != 0) {
+        Py_FatalError("parking_lot: sem_post failed");
+    }
+#else
+    pthread_mutex_lock(&sema->mutex);
+    sema->counter++;
+    pthread_cond_signal(&sema->cond);
+    pthread_mutex_unlock(&sema->mutex);
+#endif
+}
+
+static void
+enqueue(Bucket *bucket, const void *address, struct wait_entry *wait)
+{
+    llist_insert_tail(&bucket->root, &wait->node);
+    ++bucket->num_waiters;
+}
+
+static struct wait_entry *
+dequeue(Bucket *bucket, const void *address)
+{
+    // find the first waiter that is waiting on `address`
+    struct llist_node *root = &bucket->root;
+    struct llist_node *node;
+    llist_for_each(node, root) {
+        struct wait_entry *wait = llist_data(node, struct wait_entry, node);
+        if (wait->addr == (uintptr_t)address) {
+            llist_remove(node);
+            --bucket->num_waiters;
+            return wait;
+        }
+    }
+    return NULL;
+}
+
+static void
+dequeue_all(Bucket *bucket, const void *address, struct llist_node *dst)
+{
+    // remove and append all matching waiters to dst
+    struct llist_node *root = &bucket->root;
+    struct llist_node *node;
+    llist_for_each_safe(node, root) {
+        struct wait_entry *wait = llist_data(node, struct wait_entry, node);
+        if (wait->addr == (uintptr_t)address) {
+            llist_remove(node);
+            llist_insert_tail(dst, node);
+            --bucket->num_waiters;
+        }
+    }
+}
+
+// Checks that `*addr == *expected` (only works for 1, 2, 4, or 8 bytes)
+static int
+atomic_memcmp(const void *addr, const void *expected, size_t addr_size)
+{
+    switch (addr_size) {
+    case 1: return _Py_atomic_load_uint8(addr) == *(const uint8_t *)expected;
+    case 2: return _Py_atomic_load_uint16(addr) == *(const uint16_t *)expected;
+    case 4: return _Py_atomic_load_uint32(addr) == *(const uint32_t *)expected;
+    case 8: return _Py_atomic_load_uint64(addr) == *(const uint64_t *)expected;
+    default: Py_UNREACHABLE();
+    }
+}
+
+int
+_PyParkingLot_Park(const void *addr, const void *expected, size_t size,
+                   _PyTime_t timeout_ns, void *park_arg, int detach)
+{
+    struct wait_entry wait = {
+        .park_arg = park_arg,
+        .addr = (uintptr_t)addr,
+        .is_unparking = false,
+    };
+
+    Bucket *bucket = &buckets[((uintptr_t)addr) % NUM_BUCKETS];
+
+    _PyRawMutex_Lock(&bucket->mutex);
+    if (!atomic_memcmp(addr, expected, size)) {
+        _PyRawMutex_Unlock(&bucket->mutex);
+        return Py_PARK_AGAIN;
+    }
+    _PySemaphore_Init(&wait.sema);
+    enqueue(bucket, addr, &wait);
+    _PyRawMutex_Unlock(&bucket->mutex);
+
+    int res = _PySemaphore_Wait(&wait.sema, timeout_ns, detach);
+    if (res == Py_PARK_OK) {
+        goto done;
+    }
+
+    // timeout or interrupt
+    _PyRawMutex_Lock(&bucket->mutex);
+    if (wait.is_unparking) {
+        _PyRawMutex_Unlock(&bucket->mutex);
+        // Another thread has started to unpark us. Wait until we process the
+        // wakeup signal.
+        do {
+            res = _PySemaphore_Wait(&wait.sema, -1, detach);
+        } while (res != Py_PARK_OK);
+        goto done;
+    }
+    else {
+        llist_remove(&wait.node);
+        --bucket->num_waiters;
+    }
+    _PyRawMutex_Unlock(&bucket->mutex);
+
+done:
+    _PySemaphore_Destroy(&wait.sema);
+    return res;
+
+}
+
+void
+_PyParkingLot_Unpark(const void *addr, _Py_unpark_fn_t *fn, void *arg)
+{
+    Bucket *bucket = &buckets[((uintptr_t)addr) % NUM_BUCKETS];
+
+    // Find the first waiter that is waiting on `addr`
+    _PyRawMutex_Lock(&bucket->mutex);
+    struct wait_entry *waiter = dequeue(bucket, addr);
+    if (waiter) {
+        waiter->is_unparking = true;
+
+        int has_more_waiters = (bucket->num_waiters > 0);
+        fn(arg, waiter->park_arg, has_more_waiters);
+    }
+    else {
+        fn(arg, NULL, 0);
+    }
+    _PyRawMutex_Unlock(&bucket->mutex);
+
+    if (waiter) {
+        // Wakeup the waiter outside of the bucket lock
+        _PySemaphore_Wakeup(&waiter->sema);
+    }
+}
+
+void
+_PyParkingLot_UnparkAll(const void *addr)
+{
+    struct llist_node head = LLIST_INIT(head);
+    Bucket *bucket = &buckets[((uintptr_t)addr) % NUM_BUCKETS];
+
+    _PyRawMutex_Lock(&bucket->mutex);
+    dequeue_all(bucket, addr, &head);
+    _PyRawMutex_Unlock(&bucket->mutex);
+
+    struct llist_node *node;
+    llist_for_each_safe(node, &head) {
+        struct wait_entry *waiter = llist_data(node, struct wait_entry, node);
+        llist_remove(node);
+        _PySemaphore_Wakeup(&waiter->sema);
+    }
+}
+
+void
+_PyParkingLot_AfterFork(void)
+{
+    // After a fork only one thread remains. That thread cannot be blocked
+    // so all entries in the parking lot are for dead threads.
+    memset(buckets, 0, sizeof(buckets));
+    for (Py_ssize_t i = 0; i < NUM_BUCKETS; i++) {
+        llist_init(&buckets[i].root);
+    }
+}
diff --git a/Python/pathconfig.c b/Python/pathconfig.c
index be0f97c4b204a9..50c60093cd4e32 100644
--- a/Python/pathconfig.c
+++ b/Python/pathconfig.c
@@ -1,23 +1,21 @@
 /* Path configuration like module_search_path (sys.path) */
 
 #include "Python.h"
-#include "marshal.h"              // PyMarshal_ReadObjectFromString
-#include "osdefs.h"               // DELIM
-#include "pycore_initconfig.h"
-#include "pycore_fileutils.h"
+#include "pycore_initconfig.h"    // _PyStatus_OK()
+#include "pycore_fileutils.h"     // _Py_wgetcwd()
 #include "pycore_pathconfig.h"
 #include "pycore_pymem.h"         // _PyMem_SetDefaultAllocator()
 #include <wchar.h>
+
+#include "marshal.h"              // PyMarshal_ReadObjectFromString
+#include "osdefs.h"               // DELIM
+
 #ifdef MS_WINDOWS
 #  include <windows.h>            // GetFullPathNameW(), MAX_PATH
 #  include <pathcch.h>
 #  include <shlwapi.h>
 #endif
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 
 /* External interface */
 
@@ -211,7 +209,8 @@ path_out_of_memory(const char *func)
     _Py_FatalErrorFunc(func, "out of memory");
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 Py_SetPath(const wchar_t *path)
 {
     if (path == NULL) {
@@ -252,7 +251,8 @@ Py_SetPath(const wchar_t *path)
 }
 
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 Py_SetPythonHome(const wchar_t *home)
 {
     int has_value = home && home[0];
@@ -275,7 +275,8 @@ Py_SetPythonHome(const wchar_t *home)
 }
 
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 Py_SetProgramName(const wchar_t *program_name)
 {
     int has_value = program_name && program_name[0];
@@ -297,28 +298,6 @@ Py_SetProgramName(const wchar_t *program_name)
     }
 }
 
-void
-_Py_SetProgramFullPath(const wchar_t *program_full_path)
-{
-    int has_value = program_full_path && program_full_path[0];
-
-    PyMemAllocatorEx old_alloc;
-    _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-    PyMem_RawFree(_Py_path_config.program_full_path);
-    _Py_path_config.program_full_path = NULL;
-
-    if (has_value) {
-        _Py_path_config.program_full_path = _PyMem_RawWcsdup(program_full_path);
-    }
-
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-    if (has_value && _Py_path_config.program_full_path == NULL) {
-        path_out_of_memory(__func__);
-    }
-}
-
 
 wchar_t *
 Py_GetPath(void)
@@ -517,8 +496,3 @@ _PyPathConfig_ComputeSysPath0(const PyWideStringList *argv, PyObject **path0_p)
     *path0_p = path0_obj;
     return 1;
 }
-
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Python/perf_trampoline.c b/Python/perf_trampoline.c
index 3b183280e1f24c..540b650192ed34 100644
--- a/Python/perf_trampoline.c
+++ b/Python/perf_trampoline.c
@@ -130,7 +130,7 @@ any DWARF information available for them).
 */
 
 #include "Python.h"
-#include "pycore_ceval.h"
+#include "pycore_ceval.h"         // _PyPerf_Callbacks
 #include "pycore_frame.h"
 #include "pycore_interp.h"
 
@@ -140,9 +140,9 @@ any DWARF information available for them).
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <sys/mman.h>
+#include <sys/mman.h>             // mmap()
 #include <sys/types.h>
-#include <unistd.h>
+#include <unistd.h>               // sysconf()
 
 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 #define PY_HAVE_INVALIDATE_ICACHE
@@ -192,76 +192,48 @@ typedef struct trampoline_api_st trampoline_api_t;
 #define perf_code_arena _PyRuntime.ceval.perf.code_arena
 #define trampoline_api _PyRuntime.ceval.perf.trampoline_api
 #define perf_map_file _PyRuntime.ceval.perf.map_file
+#define persist_after_fork _PyRuntime.ceval.perf.persist_after_fork
 
-static void *
-perf_map_get_file(void)
+static void
+perf_map_write_entry(void *state, const void *code_addr,
+                         unsigned int code_size, PyCodeObject *co)
 {
-    if (perf_map_file) {
-        return perf_map_file;
+    const char *entry = "";
+    if (co->co_qualname != NULL) {
+        entry = PyUnicode_AsUTF8(co->co_qualname);
     }
-    char filename[100];
-    pid_t pid = getpid();
-    // Location and file name of perf map is hard-coded in perf tool.
-    // Use exclusive create flag wit nofollow to prevent symlink attacks.
-    int flags = O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW | O_CLOEXEC;
-    snprintf(filename, sizeof(filename) - 1, "/tmp/perf-%jd.map",
-             (intmax_t)pid);
-    int fd = open(filename, flags, 0600);
-    if (fd == -1) {
-        perf_status = PERF_STATUS_FAILED;
-        PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
-        return NULL;
+    const char *filename = "";
+    if (co->co_filename != NULL) {
+        filename = PyUnicode_AsUTF8(co->co_filename);
     }
-    perf_map_file = fdopen(fd, "w");
-    if (!perf_map_file) {
-        perf_status = PERF_STATUS_FAILED;
-        PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
-        close(fd);
-        return NULL;
+    size_t perf_map_entry_size = snprintf(NULL, 0, "py::%s:%s", entry, filename) + 1;
+    char* perf_map_entry = (char*) PyMem_RawMalloc(perf_map_entry_size);
+    if (perf_map_entry == NULL) {
+        return;
     }
-    return perf_map_file;
+    snprintf(perf_map_entry, perf_map_entry_size, "py::%s:%s", entry, filename);
+    PyUnstable_WritePerfMapEntry(code_addr, code_size, perf_map_entry);
+    PyMem_RawFree(perf_map_entry);
 }
 
-static int
-perf_map_close(void *state)
+static void*
+perf_map_init_state(void)
 {
-    FILE *fp = (FILE *)state;
-    int ret = 0;
-    if (fp) {
-        ret = fclose(fp);
-    }
-    perf_map_file = NULL;
-    perf_status = PERF_STATUS_NO_INIT;
-    return ret;
+    PyUnstable_PerfMapState_Init();
+    return NULL;
 }
 
-static void
-perf_map_write_entry(void *state, const void *code_addr,
-                         unsigned int code_size, PyCodeObject *co)
+static int
+perf_map_free_state(void *state)
 {
-    assert(state != NULL);
-    FILE *method_file = (FILE *)state;
-    const char *entry = PyUnicode_AsUTF8(co->co_qualname);
-    if (entry == NULL) {
-        _PyErr_WriteUnraisableMsg("Failed to get qualname from code object",
-                                  NULL);
-        return;
-    }
-    const char *filename = PyUnicode_AsUTF8(co->co_filename);
-    if (filename == NULL) {
-        _PyErr_WriteUnraisableMsg("Failed to get filename from code object",
-                                  NULL);
-        return;
-    }
-    fprintf(method_file, "%" PRIxPTR " %x py::%s:%s\n", (uintptr_t) code_addr, code_size, entry,
-            filename);
-    fflush(method_file);
+    PyUnstable_PerfMapState_Fini();
+    return 0;
 }
 
 _PyPerf_Callbacks _Py_perfmap_callbacks = {
-    &perf_map_get_file,
+    &perf_map_init_state,
     &perf_map_write_entry,
-    &perf_map_close
+    &perf_map_free_state,
 };
 
 static int
@@ -277,8 +249,7 @@ new_code_arena(void)
              0);  // offset (not used here)
     if (!memory) {
         PyErr_SetFromErrno(PyExc_OSError);
-        _PyErr_WriteUnraisableMsg(
-            "Failed to create new mmap for perf trampoline", NULL);
+        PyErr_FormatUnraisable("Failed to create new mmap for perf trampoline");
         perf_status = PERF_STATUS_FAILED;
         return -1;
     }
@@ -302,9 +273,8 @@ new_code_arena(void)
     if (res == -1) {
         PyErr_SetFromErrno(PyExc_OSError);
         munmap(memory, mem_size);
-        _PyErr_WriteUnraisableMsg(
-            "Failed to set mmap for perf trampoline to PROT_READ | PROT_EXEC",
-            NULL);
+        PyErr_FormatUnraisable("Failed to set mmap for perf trampoline to "
+                               "PROT_READ | PROT_EXEC");
         return -1;
     }
 
@@ -318,8 +288,7 @@ new_code_arena(void)
     if (new_arena == NULL) {
         PyErr_NoMemory();
         munmap(memory, mem_size);
-        _PyErr_WriteUnraisableMsg("Failed to allocate new code arena struct",
-                                  NULL);
+        PyErr_FormatUnraisable("Failed to allocate new code arena struct for perf trampoline");
         return -1;
     }
 
@@ -377,7 +346,7 @@ py_trampoline_evaluator(PyThreadState *ts, _PyInterpreterFrame *frame,
         perf_status == PERF_STATUS_NO_INIT) {
         goto default_eval;
     }
-    PyCodeObject *co = frame->f_code;
+    PyCodeObject *co = _PyFrame_GetCode(frame);
     py_trampoline f = NULL;
     assert(extra_code_index != -1);
     int ret = _PyCode_GetExtra((PyObject *)co, extra_code_index, (void **)&f);
@@ -402,6 +371,26 @@ py_trampoline_evaluator(PyThreadState *ts, _PyInterpreterFrame *frame,
 }
 #endif  // PY_HAVE_PERF_TRAMPOLINE
 
+int PyUnstable_PerfTrampoline_CompileCode(PyCodeObject *co)
+{
+#ifdef PY_HAVE_PERF_TRAMPOLINE
+    py_trampoline f = NULL;
+    assert(extra_code_index != -1);
+    int ret = _PyCode_GetExtra((PyObject *)co, extra_code_index, (void **)&f);
+    if (ret != 0 || f == NULL) {
+        py_trampoline new_trampoline = compile_trampoline();
+        if (new_trampoline == NULL) {
+            return 0;
+        }
+        trampoline_api.write_state(trampoline_api.state, new_trampoline,
+                                   perf_code_arena->code_size, co);
+        return _PyCode_SetExtra((PyObject *)co, extra_code_index,
+                         (void *)new_trampoline);
+    }
+#endif // PY_HAVE_PERF_TRAMPOLINE
+    return 0;
+}
+
 int
 _PyIsPerfTrampolineActive(void)
 {
@@ -440,7 +429,6 @@ _PyPerfTrampoline_SetCallbacks(_PyPerf_Callbacks *callbacks)
     trampoline_api.write_state = callbacks->write_state;
     trampoline_api.free_state = callbacks->free_state;
     trampoline_api.state = NULL;
-    perf_status = PERF_STATUS_OK;
 #endif
     return 0;
 }
@@ -459,23 +447,20 @@ _PyPerfTrampoline_Init(int activate)
     }
     if (!activate) {
         tstate->interp->eval_frame = NULL;
+        perf_status = PERF_STATUS_NO_INIT;
     }
     else {
         tstate->interp->eval_frame = py_trampoline_evaluator;
         if (new_code_arena() < 0) {
             return -1;
         }
-        if (trampoline_api.state == NULL) {
-            void *state = trampoline_api.init_state();
-            if (state == NULL) {
-                return -1;
-            }
-            trampoline_api.state = state;
-        }
         extra_code_index = _PyEval_RequestCodeExtraIndex(NULL);
         if (extra_code_index == -1) {
             return -1;
         }
+        if (trampoline_api.state == NULL && trampoline_api.init_state != NULL) {
+            trampoline_api.state = trampoline_api.init_state();
+        }
         perf_status = PERF_STATUS_OK;
     }
 #endif
@@ -486,16 +471,34 @@ int
 _PyPerfTrampoline_Fini(void)
 {
 #ifdef PY_HAVE_PERF_TRAMPOLINE
+    if (perf_status != PERF_STATUS_OK) {
+        return 0;
+    }
     PyThreadState *tstate = _PyThreadState_GET();
     if (tstate->interp->eval_frame == py_trampoline_evaluator) {
         tstate->interp->eval_frame = NULL;
     }
-    free_code_arenas();
-    if (trampoline_api.state != NULL) {
+    if (perf_status == PERF_STATUS_OK) {
         trampoline_api.free_state(trampoline_api.state);
-        trampoline_api.state = NULL;
     }
     extra_code_index = -1;
+    perf_status = PERF_STATUS_NO_INIT;
+#endif
+    return 0;
+}
+
+void _PyPerfTrampoline_FreeArenas(void) {
+#ifdef PY_HAVE_PERF_TRAMPOLINE
+    free_code_arenas();
+#endif
+    return;
+}
+
+int
+PyUnstable_PerfTrampoline_SetPersistAfterFork(int enable){
+#ifdef PY_HAVE_PERF_TRAMPOLINE
+    persist_after_fork = enable;
+    return persist_after_fork;
 #endif
     return 0;
 }
@@ -504,11 +507,21 @@ PyStatus
 _PyPerfTrampoline_AfterFork_Child(void)
 {
 #ifdef PY_HAVE_PERF_TRAMPOLINE
-    // Restart trampoline in file in child.
-    int was_active = _PyIsPerfTrampolineActive();
-    _PyPerfTrampoline_Fini();
-    if (was_active) {
-        _PyPerfTrampoline_Init(1);
+    if (persist_after_fork) {
+        _PyPerfTrampoline_Fini();
+        char filename[256];
+        pid_t parent_pid = getppid();
+        snprintf(filename, sizeof(filename), "/tmp/perf-%d.map", parent_pid);
+        if (PyUnstable_CopyPerfMapFile(filename) != 0) {
+            return PyStatus_Error("Failed to copy perf map file.");
+        }
+    } else {
+        // Restart trampoline in file in child.
+        int was_active = _PyIsPerfTrampolineActive();
+        _PyPerfTrampoline_Fini();
+        if (was_active) {
+            _PyPerfTrampoline_Init(1);
+        }
     }
 #endif
     return PyStatus_Ok();
diff --git a/Python/preconfig.c b/Python/preconfig.c
index 77a86d651eb0f4..5b26c75de8b3a0 100644
--- a/Python/preconfig.c
+++ b/Python/preconfig.c
@@ -2,6 +2,7 @@
 #include "pycore_fileutils.h"     // DECODE_LOCALE_ERR
 #include "pycore_getopt.h"        // _PyOS_GetOpt()
 #include "pycore_initconfig.h"    // _PyArgv
+#include "pycore_pylifecycle.h"   // _Py_LegacyLocaleDetected()
 #include "pycore_pymem.h"         // _PyMem_GetAllocatorName()
 #include "pycore_runtime.h"       // _PyRuntime_Initialize()
 
diff --git a/Python/pyhash.c b/Python/pyhash.c
index d5ac9f83be61cc..141407c265677a 100644
--- a/Python/pyhash.c
+++ b/Python/pyhash.c
@@ -4,6 +4,7 @@
    All the utility functions (_Py_Hash*()) return "-1" to signify an error.
 */
 #include "Python.h"
+#include "pycore_pyhash.h"        // _Py_HashSecret_t
 
 #ifdef __APPLE__
 #  include <libkern/OSByteOrder.h>
@@ -13,10 +14,6 @@
 #  include <sys/endian.h>
 #endif
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 _Py_HashSecret_t _Py_HashSecret = {{0}};
 
 #if Py_HASH_ALGORITHM == Py_HASH_EXTERNAL
@@ -86,8 +83,6 @@ static Py_ssize_t hashstats[Py_HASH_STATS_MAX + 1] = {0};
 
    */
 
-Py_hash_t _Py_HashPointer(const void *);
-
 Py_hash_t
 _Py_HashDouble(PyObject *inst, double v)
 {
@@ -135,23 +130,13 @@ _Py_HashDouble(PyObject *inst, double v)
 }
 
 Py_hash_t
-_Py_HashPointerRaw(const void *p)
+Py_HashPointer(const void *ptr)
 {
-    size_t y = (size_t)p;
-    /* bottom 3 or 4 bits are likely to be 0; rotate y by 4 to avoid
-       excessive hash collisions for dicts and sets */
-    y = (y >> 4) | (y << (8 * SIZEOF_VOID_P - 4));
-    return (Py_hash_t)y;
-}
-
-Py_hash_t
-_Py_HashPointer(const void *p)
-{
-    Py_hash_t x = _Py_HashPointerRaw(p);
-    if (x == -1) {
-        x = -2;
+    Py_hash_t hash = _Py_HashPointerRaw(ptr);
+    if (hash == -1) {
+        hash = -2;
     }
-    return x;
+    return hash;
 }
 
 Py_hash_t
@@ -502,7 +487,3 @@ pysiphash(const void *src, Py_ssize_t src_sz) {
 
 static PyHash_FuncDef PyHash_Func = {pysiphash, "siphash24", 64, 128};
 #endif
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
index c5dc0f44a38068..45a119fcca7f2c 100644
--- a/Python/pylifecycle.c
+++ b/Python/pylifecycle.c
@@ -2,10 +2,12 @@
 
 #include "Python.h"
 
+#include "pycore_call.h"          // _PyObject_CallMethod()
 #include "pycore_ceval.h"         // _PyEval_FiniGIL()
+#include "pycore_codecs.h"        // _PyCodec_Lookup()
 #include "pycore_context.h"       // _PyContext_Init()
-#include "pycore_exceptions.h"    // _PyExc_InitTypes()
 #include "pycore_dict.h"          // _PyDict_Fini()
+#include "pycore_exceptions.h"    // _PyExc_InitTypes()
 #include "pycore_fileutils.h"     // _Py_ResetForceASCII()
 #include "pycore_floatobject.h"   // _PyFloat_InitTypes()
 #include "pycore_genobject.h"     // _PyAsyncGen_Fini()
@@ -15,25 +17,32 @@
 #include "pycore_list.h"          // _PyList_Fini()
 #include "pycore_long.h"          // _PyLong_InitTypes()
 #include "pycore_object.h"        // _PyDebug_PrintTotalRefs()
-#include "pycore_pathconfig.h"    // _PyConfig_WritePathConfig()
+#include "pycore_pathconfig.h"    // _PyPathConfig_UpdateGlobal()
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
 #include "pycore_pylifecycle.h"   // _PyErr_Print()
 #include "pycore_pymem.h"         // _PyObject_DebugMallocStats()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_runtime.h"       // _Py_ID()
 #include "pycore_runtime_init.h"  // _PyRuntimeState_INIT
+#include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "pycore_sliceobject.h"   // _PySlice_Fini()
 #include "pycore_sysmodule.h"     // _PySys_ClearAuditHooks()
 #include "pycore_traceback.h"     // _Py_DumpTracebackThreads()
 #include "pycore_typeobject.h"    // _PyTypes_InitTypes()
+#include "pycore_typevarobject.h" // _Py_clear_generic_types()
 #include "pycore_unicodeobject.h" // _PyUnicode_InitTypes()
+#include "pycore_weakref.h"       // _PyWeakref_GET_REF()
+
 #include "opcode.h"
 
 #include <locale.h>               // setlocale()
 #include <stdlib.h>               // getenv()
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // isatty()
+#endif
 
 #if defined(__APPLE__)
-#include <mach-o/loader.h>
+#  include <mach-o/loader.h>
 #endif
 
 #ifdef HAVE_SIGNAL_H
@@ -52,12 +61,7 @@
 #  undef BYTE
 #endif
 
-#define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str))
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
+#define PUTS(fd, str) (void)_Py_write_noraise(fd, str, (int)strlen(str))
 
 
 /* Forward declarations */
@@ -124,7 +128,7 @@ _PyRuntime_Finalize(void)
 }
 
 int
-_Py_IsFinalizing(void)
+Py_IsFinalizing(void)
 {
     return _PyRuntimeState_GetFinalizing(&_PyRuntime) != NULL;
 }
@@ -524,11 +528,6 @@ pycore_init_runtime(_PyRuntimeState *runtime,
         return status;
     }
 
-    status = _PyTime_Init();
-    if (_PyStatus_EXCEPTION(status)) {
-        return status;
-    }
-
     status = _PyImport_Init();
     if (_PyStatus_EXCEPTION(status)) {
         return status;
@@ -577,12 +576,14 @@ init_interp_settings(PyInterpreterState *interp,
         interp->feature_flags |= Py_RTFLAGS_MULTI_INTERP_EXTENSIONS;
     }
 
+    /* We check "gil" in init_interp_create_gil(). */
+
     return _PyStatus_OK();
 }
 
 
 static PyStatus
-init_interp_create_gil(PyThreadState *tstate, int own_gil)
+init_interp_create_gil(PyThreadState *tstate, int gil)
 {
     PyStatus status;
 
@@ -597,6 +598,15 @@ init_interp_create_gil(PyThreadState *tstate, int own_gil)
         return status;
     }
 
+    int own_gil;
+    switch (gil) {
+    case PyInterpreterConfig_DEFAULT_GIL: own_gil = 0; break;
+    case PyInterpreterConfig_SHARED_GIL: own_gil = 0; break;
+    case PyInterpreterConfig_OWN_GIL: own_gil = 1; break;
+    default:
+        return _PyStatus_ERR("invalid interpreter config 'gil' value");
+    }
+
     /* Create the GIL and take it */
     status = _PyEval_InitGIL(tstate, own_gil);
     if (_PyStatus_EXCEPTION(status)) {
@@ -613,10 +623,12 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
                           PyThreadState **tstate_p)
 {
     PyStatus status;
-    PyInterpreterState *interp = PyInterpreterState_New();
-    if (interp == NULL) {
-        return _PyStatus_ERR("can't make main interpreter");
+    PyInterpreterState *interp;
+    status = _PyInterpreterState_New(NULL, &interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
     }
+    assert(interp != NULL);
     assert(_Py_IsMainInterpreter(interp));
 
     status = _PyConfig_Copy(&interp->config, src_config);
@@ -632,21 +644,20 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
 
     PyInterpreterConfig config = _PyInterpreterConfig_LEGACY_INIT;
     // The main interpreter always has its own GIL.
-    config.own_gil = 1;
+    config.gil = PyInterpreterConfig_OWN_GIL;
     status = init_interp_settings(interp, &config);
     if (_PyStatus_EXCEPTION(status)) {
         return status;
     }
 
-    PyThreadState *tstate = _PyThreadState_New(interp);
+    PyThreadState *tstate = _PyThreadState_New(interp,
+                                               _PyThreadState_WHENCE_INTERP);
     if (tstate == NULL) {
         return _PyStatus_ERR("can't make first thread");
     }
     _PyThreadState_Bind(tstate);
-    // XXX For now we do this before the GIL is created.
-    (void) _PyThreadState_SwapNoGIL(tstate);
 
-    status = init_interp_create_gil(tstate, config.own_gil);
+    status = init_interp_create_gil(tstate, config.gil);
     if (_PyStatus_EXCEPTION(status)) {
         return status;
     }
@@ -722,25 +733,10 @@ pycore_init_types(PyInterpreterState *interp)
     if (_PyStatus_EXCEPTION(status)) {
         return status;
     }
+
     return _PyStatus_OK();
 }
 
-static const uint8_t INTERPRETER_TRAMPOLINE_INSTRUCTIONS[] = {
-    /* Put a NOP at the start, so that the IP points into
-    * the code, rather than before it */
-    NOP, 0,
-    INTERPRETER_EXIT, 0,
-    /* RESUME at end makes sure that the frame appears incomplete */
-    RESUME, 0
-};
-
-static const _PyShimCodeDef INTERPRETER_TRAMPOLINE_CODEDEF = {
-    INTERPRETER_TRAMPOLINE_INSTRUCTIONS,
-    sizeof(INTERPRETER_TRAMPOLINE_INSTRUCTIONS),
-    1,
-    "<interpreter trampoline>"
-};
-
 static PyStatus
 pycore_init_builtins(PyThreadState *tstate)
 {
@@ -762,22 +758,30 @@ pycore_init_builtins(PyThreadState *tstate)
     }
     interp->builtins = Py_NewRef(builtins_dict);
 
-    PyObject *isinstance = PyDict_GetItem(builtins_dict, &_Py_ID(isinstance));
-    assert(isinstance);
+    PyObject *isinstance = PyDict_GetItemWithError(builtins_dict, &_Py_ID(isinstance));
+    if (!isinstance) {
+        goto error;
+    }
     interp->callable_cache.isinstance = isinstance;
-    PyObject *len = PyDict_GetItem(builtins_dict, &_Py_ID(len));
-    assert(len);
+
+    PyObject *len = PyDict_GetItemWithError(builtins_dict, &_Py_ID(len));
+    if (!len) {
+        goto error;
+    }
     interp->callable_cache.len = len;
+
     PyObject *list_append = _PyType_Lookup(&PyList_Type, &_Py_ID(append));
-    assert(list_append);
+    if (list_append == NULL) {
+        goto error;
+    }
     interp->callable_cache.list_append = list_append;
+
     PyObject *object__getattribute__ = _PyType_Lookup(&PyBaseObject_Type, &_Py_ID(__getattribute__));
-    assert(object__getattribute__);
-    interp->callable_cache.object__getattribute__ = object__getattribute__;
-    interp->interpreter_trampoline = _Py_MakeShimCode(&INTERPRETER_TRAMPOLINE_CODEDEF);
-    if (interp->interpreter_trampoline == NULL) {
-        return _PyStatus_ERR("failed to create interpreter trampoline.");
+    if (object__getattribute__ == NULL) {
+        goto error;
     }
+    interp->callable_cache.object__getattribute__ = object__getattribute__;
+
     if (_PyBuiltins_AddExceptions(bimod) < 0) {
         return _PyStatus_ERR("failed to add exceptions to builtins");
     }
@@ -816,16 +820,16 @@ pycore_interp_init(PyThreadState *tstate)
         return status;
     }
 
+    status = _PyDtoa_Init(interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }
+
     // The GC must be initialized before the first GC collection.
     status = _PyGC_Init(interp);
     if (_PyStatus_EXCEPTION(status)) {
         return status;
     }
-    // Intern strings in deep-frozen modules first so that others
-    // can use it instead of creating a heap allocated string.
-    if (_Py_Deepfreeze_Init() < 0) {
-        return _PyStatus_ERR("failed to initialize deep-frozen modules");
-    }
 
     status = pycore_init_types(interp);
     if (_PyStatus_EXCEPTION(status)) {
@@ -851,6 +855,11 @@ pycore_interp_init(PyThreadState *tstate)
         goto done;
     }
 
+    status = _PyXI_Init(interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        goto done;
+    }
+
     const PyConfig *config = _PyInterpreterState_GetConfig(interp);
 
     status = _PyImport_InitCore(tstate, sysmod, config->_install_importlib);
@@ -1073,6 +1082,38 @@ pyinit_main_reconfigure(PyThreadState *tstate)
 }
 
 
+#ifdef Py_DEBUG
+static void
+run_presite(PyThreadState *tstate)
+{
+    PyInterpreterState *interp = tstate->interp;
+    const PyConfig *config = _PyInterpreterState_GetConfig(interp);
+
+    if (!config->run_presite) {
+        return;
+    }
+
+    PyObject *presite_modname = PyUnicode_FromWideChar(
+        config->run_presite,
+        wcslen(config->run_presite)
+    );
+    if (presite_modname == NULL) {
+        fprintf(stderr, "Could not convert pre-site module name to unicode\n");
+        Py_DECREF(presite_modname);
+    }
+    else {
+        PyObject *presite = PyImport_Import(presite_modname);
+        if (presite == NULL) {
+            fprintf(stderr, "pre-site import failed:\n");
+            _PyErr_Print(tstate);
+        }
+        Py_XDECREF(presite);
+        Py_DECREF(presite_modname);
+    }
+}
+#endif
+
+
 static PyStatus
 init_interp_main(PyThreadState *tstate)
 {
@@ -1128,11 +1169,12 @@ init_interp_main(PyThreadState *tstate)
             return _PyStatus_ERR("can't initialize signals");
         }
 
-        if (_PyTraceMalloc_Init(config->tracemalloc) < 0) {
-            return _PyStatus_ERR("can't initialize tracemalloc");
+        if (config->tracemalloc) {
+           if (_PyTraceMalloc_Start(config->tracemalloc) < 0) {
+                return _PyStatus_ERR("can't start tracemalloc");
+            }
         }
 
-
 #ifdef PY_HAVE_PERF_TRAMPOLINE
         if (config->perf_profiling) {
             if (_PyPerfTrampoline_SetCallbacks(&_Py_perfmap_callbacks) < 0 ||
@@ -1153,6 +1195,10 @@ init_interp_main(PyThreadState *tstate)
         return status;
     }
 
+#ifdef Py_DEBUG
+    run_presite(tstate);
+#endif
+
     status = add_main_module(interp);
     if (_PyStatus_EXCEPTION(status)) {
         return status;
@@ -1187,6 +1233,48 @@ init_interp_main(PyThreadState *tstate)
 #endif
     }
 
+    // Turn on experimental tier 2 (uops-based) optimizer
+    if (is_main_interp) {
+        char *envvar = Py_GETENV("PYTHON_UOPS");
+        int enabled = envvar != NULL && *envvar > '0';
+        if (_Py_get_xoption(&config->xoptions, L"uops") != NULL) {
+            enabled = 1;
+        }
+        if (enabled) {
+            PyObject *opt = PyUnstable_Optimizer_NewUOpOptimizer();
+            if (opt == NULL) {
+                return _PyStatus_ERR("can't initialize optimizer");
+            }
+            PyUnstable_SetOptimizer((_PyOptimizerObject *)opt);
+            Py_DECREF(opt);
+        }
+    }
+
+    if (!is_main_interp) {
+        // The main interpreter is handled in Py_Main(), for now.
+        if (config->sys_path_0 != NULL) {
+            PyObject *path0 = PyUnicode_FromWideChar(config->sys_path_0, -1);
+            if (path0 == NULL) {
+                return _PyStatus_ERR("can't initialize sys.path[0]");
+            }
+            PyObject *sysdict = interp->sysdict;
+            if (sysdict == NULL) {
+                Py_DECREF(path0);
+                return _PyStatus_ERR("can't initialize sys.path[0]");
+            }
+            PyObject *sys_path = PyDict_GetItemWithError(sysdict, &_Py_ID(path));
+            if (sys_path == NULL) {
+                Py_DECREF(path0);
+                return _PyStatus_ERR("can't initialize sys.path[0]");
+            }
+            int res = PyList_Insert(sys_path, 0, path0);
+            Py_DECREF(path0);
+            if (res) {
+                return _PyStatus_ERR("can't initialize sys.path[0]");
+            }
+        }
+    }
+
     assert(!_PyErr_Occurred(tstate));
 
     return _PyStatus_OK();
@@ -1331,13 +1419,13 @@ finalize_modules_delete_special(PyThreadState *tstate, int verbose)
         PySys_WriteStderr("# clear builtins._\n");
     }
     if (PyDict_SetItemString(interp->builtins, "_", Py_None) < 0) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on setting builtin variable _");
     }
 
     const char * const *p;
     for (p = sys_deletes; *p != NULL; p++) {
         if (_PySys_ClearAttrString(interp, *p, verbose) < 0) {
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored on clearing sys.%s", *p);
         }
     }
     for (p = sys_files; *p != NULL; p+=2) {
@@ -1346,17 +1434,17 @@ finalize_modules_delete_special(PyThreadState *tstate, int verbose)
         if (verbose) {
             PySys_WriteStderr("# restore sys.%s\n", name);
         }
-        PyObject *value = _PyDict_GetItemStringWithError(interp->sysdict,
-                                                         orig_name);
+        PyObject *value;
+        if (PyDict_GetItemStringRef(interp->sysdict, orig_name, &value) < 0) {
+            PyErr_FormatUnraisable("Exception ignored on restoring sys.%s", name);
+        }
         if (value == NULL) {
-            if (_PyErr_Occurred(tstate)) {
-                PyErr_WriteUnraisable(NULL);
-            }
-            value = Py_None;
+            value = Py_NewRef(Py_None);
         }
         if (PyDict_SetItemString(interp->sysdict, name, value) < 0) {
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored on restoring sys.%s", name);
         }
+        Py_DECREF(value);
     }
 }
 
@@ -1366,7 +1454,7 @@ finalize_remove_modules(PyObject *modules, int verbose)
 {
     PyObject *weaklist = PyList_New(0);
     if (weaklist == NULL) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on removing modules");
     }
 
 #define STORE_MODULE_WEAKREF(name, mod) \
@@ -1375,13 +1463,13 @@ finalize_remove_modules(PyObject *modules, int verbose)
             if (wr) { \
                 PyObject *tup = PyTuple_Pack(2, name, wr); \
                 if (!tup || PyList_Append(weaklist, tup) < 0) { \
-                    PyErr_WriteUnraisable(NULL); \
+                    PyErr_FormatUnraisable("Exception ignored on removing modules"); \
                 } \
                 Py_XDECREF(tup); \
                 Py_DECREF(wr); \
             } \
             else { \
-                PyErr_WriteUnraisable(NULL); \
+                PyErr_FormatUnraisable("Exception ignored on removing modules"); \
             } \
         }
 
@@ -1392,7 +1480,7 @@ finalize_remove_modules(PyObject *modules, int verbose)
             } \
             STORE_MODULE_WEAKREF(name, mod); \
             if (PyObject_SetItem(modules, name, Py_None) < 0) { \
-                PyErr_WriteUnraisable(NULL); \
+                PyErr_FormatUnraisable("Exception ignored on removing modules"); \
             } \
         }
 
@@ -1406,14 +1494,14 @@ finalize_remove_modules(PyObject *modules, int verbose)
     else {
         PyObject *iterator = PyObject_GetIter(modules);
         if (iterator == NULL) {
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored on removing modules");
         }
         else {
             PyObject *key;
             while ((key = PyIter_Next(iterator))) {
                 PyObject *value = PyObject_GetItem(modules, key);
                 if (value == NULL) {
-                    PyErr_WriteUnraisable(NULL);
+                    PyErr_FormatUnraisable("Exception ignored on removing modules");
                     continue;
                 }
                 CLEAR_MODULE(key, value);
@@ -1421,7 +1509,7 @@ finalize_remove_modules(PyObject *modules, int verbose)
                 Py_DECREF(key);
             }
             if (PyErr_Occurred()) {
-                PyErr_WriteUnraisable(NULL);
+                PyErr_FormatUnraisable("Exception ignored on removing modules");
             }
             Py_DECREF(iterator);
         }
@@ -1441,7 +1529,7 @@ finalize_clear_modules_dict(PyObject *modules)
     }
     else {
         if (PyObject_CallMethodNoArgs(modules, &_Py_ID(clear)) == NULL) {
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored on clearing sys.modules");
         }
     }
 }
@@ -1453,11 +1541,11 @@ finalize_restore_builtins(PyThreadState *tstate)
     PyInterpreterState *interp = tstate->interp;
     PyObject *dict = PyDict_Copy(interp->builtins);
     if (dict == NULL) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on restoring builtins");
     }
     PyDict_Clear(interp->builtins);
     if (PyDict_Update(interp->builtins, interp->builtins_copy)) {
-        PyErr_WriteUnraisable(NULL);
+        PyErr_FormatUnraisable("Exception ignored on restoring builtins");
     }
     Py_XDECREF(dict);
 }
@@ -1471,16 +1559,16 @@ finalize_modules_clear_weaklist(PyInterpreterState *interp,
     for (Py_ssize_t i = PyList_GET_SIZE(weaklist) - 1; i >= 0; i--) {
         PyObject *tup = PyList_GET_ITEM(weaklist, i);
         PyObject *name = PyTuple_GET_ITEM(tup, 0);
-        PyObject *mod = PyWeakref_GET_OBJECT(PyTuple_GET_ITEM(tup, 1));
-        if (mod == Py_None) {
+        PyObject *mod = _PyWeakref_GET_REF(PyTuple_GET_ITEM(tup, 1));
+        if (mod == NULL) {
             continue;
         }
         assert(PyModule_Check(mod));
-        PyObject *dict = PyModule_GetDict(mod);
+        PyObject *dict = _PyModule_GetDict(mod);  // borrowed reference
         if (dict == interp->builtins || dict == interp->sysdict) {
+            Py_DECREF(mod);
             continue;
         }
-        Py_INCREF(mod);
         if (verbose && PyUnicode_Check(name)) {
             PySys_FormatStderr("# cleanup[3] wiping %U\n", name);
         }
@@ -1615,27 +1703,20 @@ flush_std_files(void)
     PyThreadState *tstate = _PyThreadState_GET();
     PyObject *fout = _PySys_GetAttr(tstate, &_Py_ID(stdout));
     PyObject *ferr = _PySys_GetAttr(tstate, &_Py_ID(stderr));
-    PyObject *tmp;
     int status = 0;
 
     if (fout != NULL && fout != Py_None && !file_is_closed(fout)) {
-        tmp = PyObject_CallMethodNoArgs(fout, &_Py_ID(flush));
-        if (tmp == NULL) {
-            PyErr_WriteUnraisable(fout);
+        if (_PyFile_Flush(fout) < 0) {
+            PyErr_FormatUnraisable("Exception ignored on flushing sys.stdout");
             status = -1;
         }
-        else
-            Py_DECREF(tmp);
     }
 
     if (ferr != NULL && ferr != Py_None && !file_is_closed(ferr)) {
-        tmp = PyObject_CallMethodNoArgs(ferr, &_Py_ID(flush));
-        if (tmp == NULL) {
+        if (_PyFile_Flush(ferr) < 0) {
             PyErr_Clear();
             status = -1;
         }
-        else
-            Py_DECREF(tmp);
     }
 
     return status;
@@ -1697,7 +1778,10 @@ finalize_interp_clear(PyThreadState *tstate)
 {
     int is_main_interp = _Py_IsMainInterpreter(tstate->interp);
 
+    _PyXI_Fini(tstate->interp);
     _PyExc_ClearExceptionGroupType(tstate->interp);
+    _Py_clear_generic_types(tstate->interp);
+    _PyDtoa_Fini(tstate->interp);
 
     /* Clear interpreter state and all thread states */
     _PyInterpreterState_Clear(tstate);
@@ -1713,8 +1797,8 @@ finalize_interp_clear(PyThreadState *tstate)
         _Py_HashRandomization_Fini();
         _PyArg_Fini();
         _Py_ClearFileSystemEncoding();
-        _Py_Deepfreeze_Fini();
         _PyPerfTrampoline_Fini();
+        _PyPerfTrampoline_FreeArenas();
     }
 
     finalize_interp_types(tstate->interp);
@@ -1788,6 +1872,7 @@ Py_FinalizeEx(void)
 
     /* Remaining daemon threads will automatically exit
        when they attempt to take the GIL (ex: PyEval_RestoreThread()). */
+    _PyInterpreterState_SetFinalizing(tstate->interp, tstate);
     _PyRuntimeState_SetFinalizing(runtime, tstate);
     runtime->initialized = 0;
     runtime->core_initialized = 0;
@@ -1904,11 +1989,11 @@ Py_FinalizeEx(void)
     }
 
     if (dump_refs) {
-        _Py_PrintReferences(stderr);
+        _Py_PrintReferences(tstate->interp, stderr);
     }
 
     if (dump_refs_fp != NULL) {
-        _Py_PrintReferences(dump_refs_fp);
+        _Py_PrintReferences(tstate->interp, dump_refs_fp);
     }
 #endif /* Py_TRACE_REFS */
 
@@ -1927,31 +2012,30 @@ Py_FinalizeEx(void)
     // XXX Ensure finalizer errors are handled properly.
 
     finalize_interp_clear(tstate);
-    finalize_interp_delete(tstate->interp);
-
-#ifdef Py_REF_DEBUG
-    if (show_ref_count) {
-        _PyDebug_PrintTotalRefs();
-    }
-    _Py_FinalizeRefTotal(runtime);
-#endif
-    _Py_FinalizeAllocatedBlocks(runtime);
 
 #ifdef Py_TRACE_REFS
     /* Display addresses (& refcnts) of all objects still alive.
      * An address can be used to find the repr of the object, printed
-     * above by _Py_PrintReferences.
-     */
-
+     * above by _Py_PrintReferences. */
     if (dump_refs) {
-        _Py_PrintReferenceAddresses(stderr);
+        _Py_PrintReferenceAddresses(tstate->interp, stderr);
     }
-
     if (dump_refs_fp != NULL) {
-        _Py_PrintReferenceAddresses(dump_refs_fp);
+        _Py_PrintReferenceAddresses(tstate->interp, dump_refs_fp);
         fclose(dump_refs_fp);
     }
 #endif /* Py_TRACE_REFS */
+
+    finalize_interp_delete(tstate->interp);
+
+#ifdef Py_REF_DEBUG
+    if (show_ref_count) {
+        _PyDebug_PrintTotalRefs();
+    }
+    _Py_FinalizeRefTotal(runtime);
+#endif
+    _Py_FinalizeAllocatedBlocks(runtime);
+
 #ifdef WITH_PYMALLOC
     if (malloc_stats) {
         _PyObject_DebugMallocStats(stderr);
@@ -2009,7 +2093,8 @@ new_interpreter(PyThreadState **tstate_p, const PyInterpreterConfig *config)
         return _PyStatus_OK();
     }
 
-    PyThreadState *tstate = _PyThreadState_New(interp);
+    PyThreadState *tstate = _PyThreadState_New(interp,
+                                               _PyThreadState_WHENCE_INTERP);
     if (tstate == NULL) {
         PyInterpreterState_Delete(interp);
         *tstate_p = NULL;
@@ -2017,8 +2102,7 @@ new_interpreter(PyThreadState **tstate_p, const PyInterpreterConfig *config)
     }
     _PyThreadState_Bind(tstate);
 
-    // XXX For now we do this before the GIL is created.
-    PyThreadState *save_tstate = _PyThreadState_SwapNoGIL(tstate);
+    PyThreadState *save_tstate = _PyThreadState_GET();
     int has_gil = 0;
 
     /* From this point until the init_interp_create_gil() call,
@@ -2030,7 +2114,7 @@ new_interpreter(PyThreadState **tstate_p, const PyInterpreterConfig *config)
     const PyConfig *src_config;
     if (save_tstate != NULL) {
         // XXX Might new_interpreter() have been called without the GIL held?
-        _PyEval_ReleaseLock(save_tstate);
+        _PyThreadState_Detach(save_tstate);
         src_config = _PyInterpreterState_GetConfig(save_tstate->interp);
     }
     else
@@ -2052,12 +2136,14 @@ new_interpreter(PyThreadState **tstate_p, const PyInterpreterConfig *config)
         goto error;
     }
 
-    status = init_interp_create_gil(tstate, config->own_gil);
+    status = init_interp_create_gil(tstate, config->gil);
     if (_PyStatus_EXCEPTION(status)) {
         goto error;
     }
     has_gil = 1;
 
+    /* No objects have been created yet. */
+
     status = pycore_interp_init(tstate);
     if (_PyStatus_EXCEPTION(status)) {
         goto error;
@@ -2075,12 +2161,11 @@ new_interpreter(PyThreadState **tstate_p, const PyInterpreterConfig *config)
     *tstate_p = NULL;
 
     /* Oops, it didn't work.  Undo it all. */
-    PyErr_PrintEx(0);
     if (has_gil) {
-        PyThreadState_Swap(save_tstate);
+        _PyThreadState_Detach(tstate);
     }
-    else {
-        _PyThreadState_SwapNoGIL(save_tstate);
+    if (save_tstate != NULL) {
+        _PyThreadState_Attach(save_tstate);
     }
     PyThreadState_Clear(tstate);
     PyThreadState_Delete(tstate);
@@ -2128,7 +2213,7 @@ Py_EndInterpreter(PyThreadState *tstate)
     if (tstate != _PyThreadState_GET()) {
         Py_FatalError("thread is not current");
     }
-    if (tstate->cframe->current_frame != NULL) {
+    if (tstate->current_frame != NULL) {
         Py_FatalError("thread still has a frame");
     }
     interp->finalizing = 1;
@@ -2136,12 +2221,19 @@ Py_EndInterpreter(PyThreadState *tstate)
     // Wrap up existing "threading"-module-created, non-daemon threads.
     wait_for_thread_shutdown(tstate);
 
+    // Make any remaining pending calls.
+    _Py_FinishPendingCalls(tstate);
+
     _PyAtExit_Call(tstate->interp);
 
     if (tstate != interp->threads.head || tstate->next != NULL) {
         Py_FatalError("not the last thread");
     }
 
+    /* Remaining daemon threads will automatically exit
+       when they attempt to take the GIL (ex: PyEval_RestoreThread()). */
+    _PyInterpreterState_SetFinalizing(interp, tstate);
+
     // XXX Call something like _PyImport_Disable() here?
 
     _PyImport_FiniExternal(tstate->interp);
@@ -2152,12 +2244,24 @@ Py_EndInterpreter(PyThreadState *tstate)
     finalize_interp_delete(tstate->interp);
 }
 
+int
+_Py_IsInterpreterFinalizing(PyInterpreterState *interp)
+{
+    /* We check the runtime first since, in a daemon thread,
+       interp might be dangling pointer. */
+    PyThreadState *finalizing = _PyRuntimeState_GetFinalizing(&_PyRuntime);
+    if (finalizing == NULL) {
+        finalizing = _PyInterpreterState_GetFinalizing(interp);
+    }
+    return finalizing != NULL;
+}
+
 /* Add the __main__ module */
 
 static PyStatus
 add_main_module(PyInterpreterState *interp)
 {
-    PyObject *m, *d, *loader, *ann_dict;
+    PyObject *m, *d, *ann_dict;
     m = PyImport_AddModule("__main__");
     if (m == NULL)
         return _PyStatus_ERR("can't create __main__ module");
@@ -2170,10 +2274,11 @@ add_main_module(PyInterpreterState *interp)
     }
     Py_DECREF(ann_dict);
 
-    if (_PyDict_GetItemStringWithError(d, "__builtins__") == NULL) {
-        if (PyErr_Occurred()) {
-            return _PyStatus_ERR("Failed to test __main__.__builtins__");
-        }
+    int has_builtins = PyDict_ContainsString(d, "__builtins__");
+    if (has_builtins < 0) {
+        return _PyStatus_ERR("Failed to test __main__.__builtins__");
+    }
+    if (!has_builtins) {
         PyObject *bimod = PyImport_ImportModule("builtins");
         if (bimod == NULL) {
             return _PyStatus_ERR("Failed to retrieve builtins module");
@@ -2189,11 +2294,13 @@ add_main_module(PyInterpreterState *interp)
      * will be set if __main__ gets further initialized later in the startup
      * process.
      */
-    loader = _PyDict_GetItemStringWithError(d, "__loader__");
-    if (loader == NULL || loader == Py_None) {
-        if (PyErr_Occurred()) {
-            return _PyStatus_ERR("Failed to test __main__.__loader__");
-        }
+    PyObject *loader;
+    if (PyDict_GetItemStringRef(d, "__loader__", &loader) < 0) {
+        return _PyStatus_ERR("Failed to test __main__.__loader__");
+    }
+    int has_loader = !(loader == NULL || loader == Py_None);
+    Py_XDECREF(loader);
+    if (!has_loader) {
         PyObject *loader = _PyImport_GetImportlibLoader(interp,
                                                         "BuiltinImporter");
         if (loader == NULL) {
@@ -2535,7 +2642,6 @@ init_sys_streams(PyThreadState *tstate)
     res = _PyStatus_ERR("can't initialize sys standard streams");
 
 done:
-    _Py_ClearStandardStreamEncoding();
     Py_XDECREF(iomod);
     return res;
 }
@@ -2584,13 +2690,9 @@ _Py_FatalError_PrintExc(PyThreadState *tstate)
     Py_DECREF(exc);
 
     /* sys.stderr may be buffered: call sys.stderr.flush() */
-    PyObject *res = PyObject_CallMethodNoArgs(ferr, &_Py_ID(flush));
-    if (res == NULL) {
+    if (_PyFile_Flush(ferr) < 0) {
         _PyErr_Clear(tstate);
     }
-    else {
-        Py_DECREF(res);
-    }
 
     return has_tb;
 }
@@ -2936,14 +3038,14 @@ wait_for_thread_shutdown(PyThreadState *tstate)
     PyObject *threading = PyImport_GetModule(&_Py_ID(threading));
     if (threading == NULL) {
         if (_PyErr_Occurred(tstate)) {
-            PyErr_WriteUnraisable(NULL);
+            PyErr_FormatUnraisable("Exception ignored on threading shutdown");
         }
         /* else: threading not imported */
         return;
     }
     result = PyObject_CallMethodNoArgs(threading, &_Py_ID(_shutdown));
     if (result == NULL) {
-        PyErr_WriteUnraisable(threading);
+        PyErr_FormatUnraisable("Exception ignored on threading shutdown");
     }
     else {
         Py_DECREF(result);
@@ -2953,24 +3055,35 @@ wait_for_thread_shutdown(PyThreadState *tstate)
 
 int Py_AtExit(void (*func)(void))
 {
-    if (_PyRuntime.atexit.ncallbacks >= NEXITFUNCS)
+    struct _atexit_runtime_state *state = &_PyRuntime.atexit;
+    PyMutex_Lock(&state->mutex);
+    if (state->ncallbacks >= NEXITFUNCS) {
+        PyMutex_Unlock(&state->mutex);
         return -1;
-    _PyRuntime.atexit.callbacks[_PyRuntime.atexit.ncallbacks++] = func;
+    }
+    state->callbacks[state->ncallbacks++] = func;
+    PyMutex_Unlock(&state->mutex);
     return 0;
 }
 
 static void
 call_ll_exitfuncs(_PyRuntimeState *runtime)
 {
+    atexit_callbackfunc exitfunc;
     struct _atexit_runtime_state *state = &runtime->atexit;
+
+    PyMutex_Lock(&state->mutex);
     while (state->ncallbacks > 0) {
         /* pop last function from the list */
         state->ncallbacks--;
-        atexit_callbackfunc exitfunc = state->callbacks[state->ncallbacks];
+        exitfunc = state->callbacks[state->ncallbacks];
         state->callbacks[state->ncallbacks] = NULL;
 
+        PyMutex_Unlock(&state->mutex);
         exitfunc();
+        PyMutex_Lock(&state->mutex);
     }
+    PyMutex_Unlock(&state->mutex);
 
     fflush(stdout);
     fflush(stderr);
@@ -3091,7 +3204,3 @@ PyOS_setsig(int sig, PyOS_sighandler_t handler)
     return oldhandler;
 #endif
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Python/pystate.c b/Python/pystate.c
index 26debf1f88b94a..1a7c0c968504d1 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -4,16 +4,19 @@
 #include "Python.h"
 #include "pycore_ceval.h"
 #include "pycore_code.h"          // stats
+#include "pycore_critical_section.h"       // _PyCriticalSection_Resume()
 #include "pycore_dtoa.h"          // _dtoa_state_INIT()
+#include "pycore_emscripten_trampoline.h"  // _Py_EmscriptenTrampoline_Init()
 #include "pycore_frame.h"
-#include "pycore_initconfig.h"
+#include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_object.h"        // _PyType_InitCache()
-#include "pycore_pyerrors.h"
-#include "pycore_pylifecycle.h"
+#include "pycore_parking_lot.h"   // _PyParkingLot_AfterFork()
+#include "pycore_pyerrors.h"      // _PyErr_Clear()
+#include "pycore_pylifecycle.h"   // _PyAST_Fini()
 #include "pycore_pymem.h"         // _PyMem_SetDefaultAllocator()
 #include "pycore_pystate.h"
 #include "pycore_runtime_init.h"  // _PyRuntimeState_INIT
-#include "pycore_sysmodule.h"
+#include "pycore_sysmodule.h"     // _PySys_Audit()
 
 /* --------------------------------------------------------------------------
 CAUTION
@@ -26,16 +29,12 @@ to avoid the expense of doing their own locking).
 -------------------------------------------------------------------------- */
 
 #ifdef HAVE_DLOPEN
-#ifdef HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-#if !HAVE_DECL_RTLD_LAZY
-#define RTLD_LAZY 1
-#endif
-#endif
-
-#ifdef __cplusplus
-extern "C" {
+#  ifdef HAVE_DLFCN_H
+#    include <dlfcn.h>
+#  endif
+#  if !HAVE_DECL_RTLD_LAZY
+#    define RTLD_LAZY 1
+#  endif
 #endif
 
 
@@ -264,10 +263,10 @@ static void
 unbind_tstate(PyThreadState *tstate)
 {
     assert(tstate != NULL);
-    // XXX assert(tstate_is_alive(tstate));
     assert(tstate_is_bound(tstate));
-    // XXX assert(!tstate->_status.active);
+#ifndef HAVE_PTHREAD_STUBS
     assert(tstate->thread_id > 0);
+#endif
 #ifdef PY_HAVE_THREAD_NATIVE_ID
     assert(tstate->native_thread_id > 0);
 #endif
@@ -380,70 +379,45 @@ _Py_COMP_DIAG_IGNORE_DEPR_DECLS
 static const _PyRuntimeState initial = _PyRuntimeState_INIT(_PyRuntime);
 _Py_COMP_DIAG_POP
 
-#define NUMLOCKS 5
-
-static int
-alloc_for_runtime(PyThread_type_lock locks[NUMLOCKS])
-{
-    /* Force default allocator, since _PyRuntimeState_Fini() must
-       use the same allocator than this function. */
-    PyMemAllocatorEx old_alloc;
-    _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-    for (int i = 0; i < NUMLOCKS; i++) {
-        PyThread_type_lock lock = PyThread_allocate_lock();
-        if (lock == NULL) {
-            for (int j = 0; j < i; j++) {
-                PyThread_free_lock(locks[j]);
-                locks[j] = NULL;
-            }
-            break;
-        }
-        locks[i] = lock;
+#define LOCKS_INIT(runtime) \
+    { \
+        &(runtime)->interpreters.mutex, \
+        &(runtime)->xi.registry.mutex, \
+        &(runtime)->unicode_state.ids.mutex, \
+        &(runtime)->imports.extensions.mutex, \
+        &(runtime)->ceval.pending_mainthread.mutex, \
+        &(runtime)->atexit.mutex, \
+        &(runtime)->audit_hooks.mutex, \
+        &(runtime)->allocators.mutex, \
     }
 
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-    return 0;
-}
-
 static void
 init_runtime(_PyRuntimeState *runtime,
              void *open_code_hook, void *open_code_userdata,
              _Py_AuditHookEntry *audit_hook_head,
-             Py_ssize_t unicode_next_index,
-             PyThread_type_lock locks[NUMLOCKS])
+             Py_ssize_t unicode_next_index)
 {
-    if (runtime->_initialized) {
-        Py_FatalError("runtime already initialized");
-    }
-    assert(!runtime->preinitializing &&
-           !runtime->preinitialized &&
-           !runtime->core_initialized &&
-           !runtime->initialized);
+    assert(!runtime->preinitializing);
+    assert(!runtime->preinitialized);
+    assert(!runtime->core_initialized);
+    assert(!runtime->initialized);
+    assert(!runtime->_initialized);
 
     runtime->open_code_hook = open_code_hook;
     runtime->open_code_userdata = open_code_userdata;
-    runtime->audit_hook_head = audit_hook_head;
+    runtime->audit_hooks.head = audit_hook_head;
 
     PyPreConfig_InitPythonConfig(&runtime->preconfig);
 
-    PyThread_type_lock *lockptrs[NUMLOCKS] = {
-        &runtime->interpreters.mutex,
-        &runtime->xidregistry.mutex,
-        &runtime->getargs.mutex,
-        &runtime->unicode_state.ids.lock,
-        &runtime->imports.extensions.mutex,
-    };
-    for (int i = 0; i < NUMLOCKS; i++) {
-        assert(locks[i] != NULL);
-        *lockptrs[i] = locks[i];
-    }
-
     // Set it to the ID of the main thread of the main interpreter.
     runtime->main_thread = PyThread_get_thread_ident();
 
     runtime->unicode_state.ids.next_index = unicode_next_index;
 
+#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
+    _Py_EmscriptenTrampoline_Init(runtime);
+#endif
+
     runtime->_initialized = 1;
 }
 
@@ -455,20 +429,16 @@ _PyRuntimeState_Init(_PyRuntimeState *runtime)
        initialization and interpreter initialization. */
     void *open_code_hook = runtime->open_code_hook;
     void *open_code_userdata = runtime->open_code_userdata;
-    _Py_AuditHookEntry *audit_hook_head = runtime->audit_hook_head;
+    _Py_AuditHookEntry *audit_hook_head = runtime->audit_hooks.head;
     // bpo-42882: Preserve next_index value if Py_Initialize()/Py_Finalize()
     // is called multiple times.
     Py_ssize_t unicode_next_index = runtime->unicode_state.ids.next_index;
 
-    PyThread_type_lock locks[NUMLOCKS];
-    if (alloc_for_runtime(locks) != 0) {
-        return _PyStatus_NO_MEMORY();
-    }
-
     if (runtime->_initialized) {
         // Py_Initialize() must be running again.
         // Reset to _PyRuntimeState_INIT.
         memcpy(runtime, &initial, sizeof(*runtime));
+        assert(!runtime->_initialized);
     }
 
     if (gilstate_tss_init(runtime) != 0) {
@@ -482,7 +452,7 @@ _PyRuntimeState_Init(_PyRuntimeState *runtime)
     }
 
     init_runtime(runtime, open_code_hook, open_code_userdata, audit_hook_head,
-                 unicode_next_index, locks);
+                 unicode_next_index);
 
     return _PyStatus_OK();
 }
@@ -502,29 +472,6 @@ _PyRuntimeState_Fini(_PyRuntimeState *runtime)
     if (PyThread_tss_is_created(&runtime->trashTSSkey)) {
         PyThread_tss_delete(&runtime->trashTSSkey);
     }
-
-    /* Force the allocator used by _PyRuntimeState_Init(). */
-    PyMemAllocatorEx old_alloc;
-    _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-#define FREE_LOCK(LOCK) \
-    if (LOCK != NULL) { \
-        PyThread_free_lock(LOCK); \
-        LOCK = NULL; \
-    }
-
-    PyThread_type_lock *lockptrs[NUMLOCKS] = {
-        &runtime->interpreters.mutex,
-        &runtime->xidregistry.mutex,
-        &runtime->getargs.mutex,
-        &runtime->unicode_state.ids.lock,
-        &runtime->imports.extensions.mutex,
-    };
-    for (int i = 0; i < NUMLOCKS; i++) {
-        FREE_LOCK(*lockptrs[i]);
-    }
-
-#undef FREE_LOCK
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
 }
 
 #ifdef HAVE_FORK
@@ -536,30 +483,19 @@ _PyRuntimeState_ReInitThreads(_PyRuntimeState *runtime)
     // This was initially set in _PyRuntimeState_Init().
     runtime->main_thread = PyThread_get_thread_ident();
 
-    /* Force default allocator, since _PyRuntimeState_Fini() must
-       use the same allocator than this function. */
-    PyMemAllocatorEx old_alloc;
-    _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
+    // Clears the parking lot. Any waiting threads are dead. This must be
+    // called before releasing any locks that use the parking lot.
+    _PyParkingLot_AfterFork();
 
-    PyThread_type_lock *lockptrs[NUMLOCKS] = {
-        &runtime->interpreters.mutex,
-        &runtime->xidregistry.mutex,
-        &runtime->getargs.mutex,
-        &runtime->unicode_state.ids.lock,
-        &runtime->imports.extensions.mutex,
-    };
-    int reinit_err = 0;
-    for (int i = 0; i < NUMLOCKS; i++) {
-        reinit_err += _PyThread_at_fork_reinit(lockptrs[i]);
+    // Re-initialize global locks
+    PyMutex *locks[] = LOCKS_INIT(runtime);
+    for (size_t i = 0; i < Py_ARRAY_LENGTH(locks); i++) {
+        _PyMutex_at_fork_reinit(locks[i]);
     }
 
-    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
     /* bpo-42540: id_mutex is freed by _PyInterpreterState_Delete, which does
      * not force the default allocator. */
-    reinit_err += _PyThread_at_fork_reinit(&runtime->interpreters.main->id_mutex);
-
-    if (reinit_err < 0) {
+    if (_PyThread_at_fork_reinit(&runtime->interpreters.main->id_mutex) < 0) {
         return _PyStatus_ERR("Failed to reinitialize runtime locks");
     }
 
@@ -595,24 +531,6 @@ _PyInterpreterState_Enable(_PyRuntimeState *runtime)
 {
     struct pyinterpreters *interpreters = &runtime->interpreters;
     interpreters->next_id = 0;
-
-    /* Py_Finalize() calls _PyRuntimeState_Fini() which clears the mutex.
-       Create a new mutex if needed. */
-    if (interpreters->mutex == NULL) {
-        /* Force default allocator, since _PyRuntimeState_Fini() must
-           use the same allocator than this function. */
-        PyMemAllocatorEx old_alloc;
-        _PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-        interpreters->mutex = PyThread_allocate_lock();
-
-        PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
-
-        if (interpreters->mutex == NULL) {
-            return _PyStatus_ERR("Can't initialize threads for interpreter");
-        }
-    }
-
     return _PyStatus_OK();
 }
 
@@ -652,14 +570,13 @@ free_interpreter(PyInterpreterState *interp)
    main interpreter.  We fix those fields here, in addition
    to the other dynamically initialized fields.
   */
-static void
+static PyStatus
 init_interpreter(PyInterpreterState *interp,
                  _PyRuntimeState *runtime, int64_t id,
-                 PyInterpreterState *next,
-                 PyThread_type_lock pending_lock)
+                 PyInterpreterState *next)
 {
     if (interp->_initialized) {
-        Py_FatalError("interpreter already initialized");
+        return _PyStatus_ERR("interpreter already initialized");
     }
 
     assert(runtime != NULL);
@@ -680,63 +597,70 @@ init_interpreter(PyInterpreterState *interp,
         memcpy(&interp->obmalloc.pools.used, temp, sizeof(temp));
     }
 
-    _PyEval_InitState(interp, pending_lock);
+    PyStatus status = _PyObject_InitState(interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }
+
+    _PyEval_InitState(interp);
     _PyGC_InitState(&interp->gc);
     PyConfig_InitPythonConfig(&interp->config);
     _PyType_InitCache(interp);
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    for (int i = 0; i < _PY_MONITORING_UNGROUPED_EVENTS; i++) {
         interp->monitors.tools[i] = 0;
     }
     for (int t = 0; t < PY_MONITORING_TOOL_IDS; t++) {
-        for (int e = 0; e < PY_MONITORING_EVENTS; e++) {
+        for (int e = 0; e < _PY_MONITORING_EVENTS; e++) {
             interp->monitoring_callables[t][e] = NULL;
 
         }
     }
     interp->sys_profile_initialized = false;
     interp->sys_trace_initialized = false;
+    interp->optimizer = &_PyOptimizer_Default;
+    interp->optimizer_backedge_threshold = _PyOptimizer_Default.backedge_threshold;
+    interp->optimizer_resume_threshold = _PyOptimizer_Default.backedge_threshold;
+    interp->next_func_version = 1;
+    interp->executor_list_head = NULL;
     if (interp != &runtime->_main_interpreter) {
         /* Fix the self-referential, statically initialized fields. */
         interp->dtoa = (struct _dtoa_state)_dtoa_state_INIT(interp);
     }
-    interp->f_opcode_trace_set = false;
+
     interp->_initialized = 1;
+    return _PyStatus_OK();
 }
 
-PyInterpreterState *
-PyInterpreterState_New(void)
+
+PyStatus
+_PyInterpreterState_New(PyThreadState *tstate, PyInterpreterState **pinterp)
 {
-    PyInterpreterState *interp;
-    _PyRuntimeState *runtime = &_PyRuntime;
-    PyThreadState *tstate = current_fast_get(runtime);
+    *pinterp = NULL;
 
-    /* tstate is NULL when Py_InitializeFromConfig() calls
-       PyInterpreterState_New() to create the main interpreter. */
-    if (_PySys_Audit(tstate, "cpython.PyInterpreterState_New", NULL) < 0) {
-        return NULL;
-    }
+    // Don't get runtime from tstate since tstate can be NULL
+    _PyRuntimeState *runtime = &_PyRuntime;
 
-    PyThread_type_lock pending_lock = PyThread_allocate_lock();
-    if (pending_lock == NULL) {
-        if (tstate != NULL) {
-            _PyErr_NoMemory(tstate);
+    // tstate is NULL when pycore_create_interpreter() calls
+    // _PyInterpreterState_New() to create the main interpreter.
+    if (tstate != NULL) {
+        if (_PySys_Audit(tstate, "cpython.PyInterpreterState_New", NULL) < 0) {
+            return _PyStatus_ERR("sys.audit failed");
         }
-        return NULL;
     }
 
-    /* Don't get runtime from tstate since tstate can be NULL. */
-    struct pyinterpreters *interpreters = &runtime->interpreters;
-
     /* We completely serialize creation of multiple interpreters, since
        it simplifies things here and blocking concurrent calls isn't a problem.
        Regardless, we must fully block subinterpreter creation until
        after the main interpreter is created. */
     HEAD_LOCK(runtime);
 
+    struct pyinterpreters *interpreters = &runtime->interpreters;
     int64_t id = interpreters->next_id;
     interpreters->next_id += 1;
 
     // Allocate the interpreter and add it to the runtime state.
+    PyInterpreterState *interp;
+    PyStatus status;
     PyInterpreterState *old_head = interpreters->head;
     if (old_head == NULL) {
         // We are creating the main interpreter.
@@ -755,36 +679,55 @@ PyInterpreterState_New(void)
 
         interp = alloc_interpreter();
         if (interp == NULL) {
+            status = _PyStatus_NO_MEMORY();
             goto error;
         }
         // Set to _PyInterpreterState_INIT.
-        memcpy(interp, &initial._main_interpreter,
-               sizeof(*interp));
+        memcpy(interp, &initial._main_interpreter, sizeof(*interp));
 
         if (id < 0) {
             /* overflow or Py_Initialize() not called yet! */
-            if (tstate != NULL) {
-                _PyErr_SetString(tstate, PyExc_RuntimeError,
-                                 "failed to get an interpreter ID");
-            }
+            status = _PyStatus_ERR("failed to get an interpreter ID");
             goto error;
         }
     }
     interpreters->head = interp;
 
-    init_interpreter(interp, runtime, id, old_head, pending_lock);
+    status = init_interpreter(interp, runtime,
+                              id, old_head);
+    if (_PyStatus_EXCEPTION(status)) {
+        goto error;
+    }
 
     HEAD_UNLOCK(runtime);
-    return interp;
+
+    assert(interp != NULL);
+    *pinterp = interp;
+    return _PyStatus_OK();
 
 error:
     HEAD_UNLOCK(runtime);
 
-    PyThread_free_lock(pending_lock);
     if (interp != NULL) {
         free_interpreter(interp);
     }
-    return NULL;
+    return status;
+}
+
+
+PyInterpreterState *
+PyInterpreterState_New(void)
+{
+    // tstate can be NULL
+    PyThreadState *tstate = current_fast_get(&_PyRuntime);
+
+    PyInterpreterState *interp;
+    PyStatus status = _PyInterpreterState_New(tstate, &interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        Py_ExitStatusException(status);
+    }
+    assert(interp != NULL);
+    return interp;
 }
 
 
@@ -822,6 +765,17 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
         p = p->next;
         HEAD_UNLOCK(runtime);
     }
+    if (tstate->interp == interp) {
+        /* We fix tstate->_status below when we for sure aren't using it
+           (e.g. no longer need the GIL). */
+        // XXX Eliminate the need to do this.
+        tstate->_status.cleared = 0;
+    }
+
+    Py_CLEAR(interp->optimizer);
+    interp->optimizer = &_PyOptimizer_Default;
+    interp->optimizer_backedge_threshold = _PyOptimizer_Default.backedge_threshold;
+    interp->optimizer_resume_threshold = _PyOptimizer_Default.backedge_threshold;
 
     /* It is possible that any of the objects below have a finalizer
        that runs Python code or otherwise relies on a thread state
@@ -832,11 +786,15 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
 
     Py_CLEAR(interp->audit_hooks);
 
-    for (int i = 0; i < PY_MONITORING_UNGROUPED_EVENTS; i++) {
+    // At this time, all the threads should be cleared so we don't need
+    // atomic operations for eval_breaker
+    interp->ceval.eval_breaker = 0;
+
+    for (int i = 0; i < _PY_MONITORING_UNGROUPED_EVENTS; i++) {
         interp->monitors.tools[i] = 0;
     }
     for (int t = 0; t < PY_MONITORING_TOOL_IDS; t++) {
-        for (int e = 0; e < PY_MONITORING_EVENTS; e++) {
+        for (int e = 0; e < _PY_MONITORING_EVENTS; e++) {
             Py_CLEAR(interp->monitoring_callables[t][e]);
         }
     }
@@ -884,7 +842,12 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
     PyDict_Clear(interp->builtins);
     Py_CLEAR(interp->sysdict);
     Py_CLEAR(interp->builtins);
-    Py_CLEAR(interp->interpreter_trampoline);
+
+    if (tstate->interp == interp) {
+        /* We are now safe to fix tstate->_status.cleared. */
+        // XXX Do this (much) earlier?
+        tstate->_status.cleared = 1;
+    }
 
     for (int i=0; i < DICT_MAX_WATCHERS; i++) {
         interp->dict_state.watchers[i] = NULL;
@@ -903,7 +866,6 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
         interp->code_watchers[i] = NULL;
     }
     interp->active_code_watchers = 0;
-    interp->f_opcode_trace_set = false;
     // XXX Once we have one allocator per interpreter (i.e.
     // per-interpreter GC) we must ensure that all of the interpreter's
     // objects have been cleaned up at the point.
@@ -930,6 +892,8 @@ _PyInterpreterState_Clear(PyThreadState *tstate)
 }
 
 
+static inline void tstate_deactivate(PyThreadState *tstate);
+static void tstate_set_detached(PyThreadState *tstate);
 static void zapthreads(PyInterpreterState *interp);
 
 void
@@ -943,13 +907,11 @@ PyInterpreterState_Delete(PyInterpreterState *interp)
     PyThreadState *tcur = current_fast_get(runtime);
     if (tcur != NULL && interp == tcur->interp) {
         /* Unset current thread.  After this, many C API calls become crashy. */
-        _PyThreadState_Swap(runtime, NULL);
+        _PyThreadState_Detach(tcur);
     }
 
     zapthreads(interp);
 
-    _PyEval_FiniState(&interp->ceval);
-
     // XXX These two calls should be done at the end of clear_interpreter(),
     // but currently some objects get decref'ed after that.
 #ifdef Py_REF_DEBUG
@@ -983,6 +945,9 @@ PyInterpreterState_Delete(PyInterpreterState *interp)
     if (interp->id_mutex != NULL) {
         PyThread_free_lock(interp->id_mutex);
     }
+
+    _PyObject_FiniState(interp);
+
     free_interpreter(interp);
 }
 
@@ -1035,6 +1000,61 @@ _PyInterpreterState_DeleteExceptMain(_PyRuntimeState *runtime)
 #endif
 
 
+int
+_PyInterpreterState_SetRunningMain(PyInterpreterState *interp)
+{
+    if (_PyInterpreterState_FailIfRunningMain(interp) < 0) {
+        return -1;
+    }
+    PyThreadState *tstate = current_fast_get(&_PyRuntime);
+    _Py_EnsureTstateNotNULL(tstate);
+    if (tstate->interp != interp) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "current tstate has wrong interpreter");
+        return -1;
+    }
+    interp->threads.main = tstate;
+    return 0;
+}
+
+void
+_PyInterpreterState_SetNotRunningMain(PyInterpreterState *interp)
+{
+    PyThreadState *tstate = interp->threads.main;
+    assert(tstate == current_fast_get(&_PyRuntime));
+
+    if (tstate->on_delete != NULL) {
+        // The threading module was imported for the first time in this
+        // thread, so it was set as threading._main_thread.  (See gh-75698.)
+        // The thread has finished running the Python program so we mark
+        // the thread object as finished.
+        assert(tstate->_whence != _PyThreadState_WHENCE_THREADING);
+        tstate->on_delete(tstate->on_delete_data);
+        tstate->on_delete = NULL;
+        tstate->on_delete_data = NULL;
+    }
+
+    interp->threads.main = NULL;
+}
+
+int
+_PyInterpreterState_IsRunningMain(PyInterpreterState *interp)
+{
+    return (interp->threads.main != NULL);
+}
+
+int
+_PyInterpreterState_FailIfRunningMain(PyInterpreterState *interp)
+{
+    if (interp->threads.main != NULL) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "interpreter already running");
+        return -1;
+    }
+    return 0;
+}
+
+
 //----------
 // accessors
 //----------
@@ -1094,8 +1114,10 @@ _PyInterpreterState_IDDecref(PyInterpreterState *interp)
     PyThread_release_lock(interp->id_mutex);
 
     if (refcount == 0 && interp->requires_idref) {
-        // XXX Using the "head" thread isn't strictly correct.
-        PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
+        PyThreadState *tstate = _PyThreadState_New(interp,
+                                                   _PyThreadState_WHENCE_INTERP);
+        _PyThreadState_Bind(tstate);
+
         // XXX Possible GILState issues?
         PyThreadState *save_tstate = _PyThreadState_Swap(runtime, tstate);
         Py_EndInterpreter(tstate);
@@ -1116,7 +1138,7 @@ _PyInterpreterState_RequireIDRef(PyInterpreterState *interp, int required)
 }
 
 PyObject *
-_PyInterpreterState_GetMainModule(PyInterpreterState *interp)
+PyUnstable_InterpreterState_GetMainModule(PyInterpreterState *interp)
 {
     PyObject *modules = _PyImport_GetModules(interp);
     if (modules == NULL) {
@@ -1149,7 +1171,7 @@ PyInterpreterState_GetDict(PyInterpreterState *interp)
    The GIL must be held.
   */
 
-PyInterpreterState *
+PyInterpreterState*
 PyInterpreterState_Get(void)
 {
     PyThreadState *tstate = current_fast_get(&_PyRuntime);
@@ -1238,18 +1260,24 @@ allocate_chunk(int size_in_bytes, _PyStackChunk* previous)
     return res;
 }
 
-static PyThreadState *
+static _PyThreadStateImpl *
 alloc_threadstate(void)
 {
-    return PyMem_RawCalloc(1, sizeof(PyThreadState));
+    return PyMem_RawCalloc(1, sizeof(_PyThreadStateImpl));
 }
 
 static void
-free_threadstate(PyThreadState *tstate)
+free_threadstate(_PyThreadStateImpl *tstate)
 {
     // The initial thread state of the interpreter is allocated
     // as part of the interpreter state so should not be freed.
-    if (tstate != &tstate->interp->_initial_thread) {
+    if (tstate == &tstate->base.interp->_initial_thread) {
+        // Restore to _PyThreadState_INIT.
+        memcpy(tstate,
+               &initial._main_interpreter._initial_thread,
+               sizeof(*tstate));
+    }
+    else {
         PyMem_RawFree(tstate);
     }
 }
@@ -1263,9 +1291,10 @@ free_threadstate(PyThreadState *tstate)
   */
 
 static void
-init_threadstate(PyThreadState *tstate,
-                 PyInterpreterState *interp, uint64_t id)
+init_threadstate(_PyThreadStateImpl *_tstate,
+                 PyInterpreterState *interp, uint64_t id, int whence)
 {
+    PyThreadState *tstate = (PyThreadState *)_tstate;
     if (tstate->_status.initialized) {
         Py_FatalError("thread state already initialized");
     }
@@ -1277,6 +1306,10 @@ init_threadstate(PyThreadState *tstate,
     assert(tstate->next == NULL);
     assert(tstate->prev == NULL);
 
+    assert(tstate->_whence == _PyThreadState_WHENCE_NOTSET);
+    assert(whence >= 0 && whence <= _PyThreadState_WHENCE_EXEC);
+    tstate->_whence = whence;
+
     assert(id > 0);
     tstate->id = id;
 
@@ -1284,7 +1317,7 @@ init_threadstate(PyThreadState *tstate,
 
     tstate->py_recursion_limit = interp->ceval.recursion_limit,
     tstate->py_recursion_remaining = interp->ceval.recursion_limit,
-    tstate->c_recursion_remaining = C_RECURSION_LIMIT;
+    tstate->c_recursion_remaining = Py_C_RECURSION_LIMIT;
 
     tstate->exc_info = &tstate->exc_state;
 
@@ -1292,7 +1325,7 @@ init_threadstate(PyThreadState *tstate,
     // This is cleared when PyGILState_Ensure() creates the thread state.
     tstate->gilstate_counter = 1;
 
-    tstate->cframe = &tstate->root_cframe;
+    tstate->current_frame = NULL;
     tstate->datastack_chunk = NULL;
     tstate->datastack_top = NULL;
     tstate->datastack_limit = NULL;
@@ -1306,8 +1339,6 @@ add_threadstate(PyInterpreterState *interp, PyThreadState *tstate,
                 PyThreadState *next)
 {
     assert(interp->threads.head != tstate);
-    assert((next != NULL && tstate->id != 1) ||
-           (next == NULL && tstate->id == 1));
     if (next != NULL) {
         assert(next->prev == NULL || next->prev == tstate);
         next->prev = tstate;
@@ -1318,15 +1349,15 @@ add_threadstate(PyInterpreterState *interp, PyThreadState *tstate,
 }
 
 static PyThreadState *
-new_threadstate(PyInterpreterState *interp)
+new_threadstate(PyInterpreterState *interp, int whence)
 {
-    PyThreadState *tstate;
+    _PyThreadStateImpl *tstate;
     _PyRuntimeState *runtime = interp->runtime;
     // We don't need to allocate a thread state for the main interpreter
     // (the common case), but doing it later for the other case revealed a
     // reentrancy problem (deadlock).  So for now we always allocate before
     // taking the interpreters lock.  See GH-96071.
-    PyThreadState *new_tstate = alloc_threadstate();
+    _PyThreadStateImpl *new_tstate = alloc_threadstate();
     int used_newtstate;
     if (new_tstate == NULL) {
         return NULL;
@@ -1341,10 +1372,10 @@ new_threadstate(PyInterpreterState *interp)
     PyThreadState *old_head = interp->threads.head;
     if (old_head == NULL) {
         // It's the interpreter's initial thread state.
-        assert(id == 1);
         used_newtstate = 0;
         tstate = &interp->_initial_thread;
     }
+    // XXX Re-use interp->_initial_thread if not in use?
     else {
         // Every valid interpreter must have at least one thread.
         assert(id > 1);
@@ -1357,21 +1388,22 @@ new_threadstate(PyInterpreterState *interp)
                sizeof(*tstate));
     }
 
-    init_threadstate(tstate, interp, id);
-    add_threadstate(interp, tstate, old_head);
+    init_threadstate(tstate, interp, id, whence);
+    add_threadstate(interp, (PyThreadState *)tstate, old_head);
 
     HEAD_UNLOCK(runtime);
     if (!used_newtstate) {
         // Must be called with lock unlocked to avoid re-entrancy deadlock.
         PyMem_RawFree(new_tstate);
     }
-    return tstate;
+    return (PyThreadState *)tstate;
 }
 
 PyThreadState *
 PyThreadState_New(PyInterpreterState *interp)
 {
-    PyThreadState *tstate = new_threadstate(interp);
+    PyThreadState *tstate = new_threadstate(interp,
+                                            _PyThreadState_WHENCE_UNKNOWN);
     if (tstate) {
         bind_tstate(tstate);
         // This makes sure there's a gilstate tstate bound
@@ -1385,21 +1417,21 @@ PyThreadState_New(PyInterpreterState *interp)
 
 // This must be followed by a call to _PyThreadState_Bind();
 PyThreadState *
-_PyThreadState_New(PyInterpreterState *interp)
+_PyThreadState_New(PyInterpreterState *interp, int whence)
 {
-    return new_threadstate(interp);
+    return new_threadstate(interp, whence);
 }
 
 // We keep this for stable ABI compabibility.
-PyThreadState *
+PyAPI_FUNC(PyThreadState*)
 _PyThreadState_Prealloc(PyInterpreterState *interp)
 {
-    return _PyThreadState_New(interp);
+    return _PyThreadState_New(interp, _PyThreadState_WHENCE_UNKNOWN);
 }
 
 // We keep this around for (accidental) stable ABI compatibility.
 // Realistically, no extensions are using it.
-void
+PyAPI_FUNC(void)
 _PyThreadState_Init(PyThreadState *tstate)
 {
     Py_FatalError("_PyThreadState_Init() is for internal use only");
@@ -1434,13 +1466,15 @@ PyThreadState_Clear(PyThreadState *tstate)
 
     int verbose = _PyInterpreterState_GetConfig(tstate->interp)->verbose;
 
-    if (verbose && tstate->cframe->current_frame != NULL) {
+    if (verbose && tstate->current_frame != NULL) {
         /* bpo-20526: After the main thread calls
-           _PyRuntimeState_SetFinalizing() in Py_FinalizeEx(), threads must
-           exit when trying to take the GIL. If a thread exit in the middle of
-           _PyEval_EvalFrameDefault(), tstate->frame is not reset to its
-           previous value. It is more likely with daemon threads, but it can
-           happen with regular threads if threading._shutdown() fails
+           _PyInterpreterState_SetFinalizing() in Py_FinalizeEx()
+           (or in Py_EndInterpreter() for subinterpreters),
+           threads must exit when trying to take the GIL.
+           If a thread exit in the middle of _PyEval_EvalFrameDefault(),
+           tstate->frame is not reset to its previous value.
+           It is more likely with daemon threads, but it can happen
+           with regular threads if threading._shutdown() fails
            (ex: interrupted by CTRL+C). */
         fprintf(stderr,
           "PyThreadState_Clear: warning: thread still has a frame\n");
@@ -1489,6 +1523,12 @@ PyThreadState_Clear(PyThreadState *tstate)
     Py_CLEAR(tstate->context);
 
     if (tstate->on_delete != NULL) {
+        // For the "main" thread of each interpreter, this is meant
+        // to be done in _PyInterpreterState_SetNotRunningMain().
+        // That leaves threads created by the threading module,
+        // and any threads killed by forking.
+        // However, we also accommodate "main" threads that still
+        // don't call _PyInterpreterState_SetNotRunningMain() yet.
         tstate->on_delete(tstate->on_delete_data);
     }
 
@@ -1503,6 +1543,7 @@ static void
 tstate_delete_common(PyThreadState *tstate)
 {
     assert(tstate->_status.cleared && !tstate->_status.finalized);
+    assert(tstate->state != _Py_THREAD_ATTACHED);
 
     PyInterpreterState *interp = tstate->interp;
     if (interp == NULL) {
@@ -1544,7 +1585,7 @@ zapthreads(PyInterpreterState *interp)
     while ((tstate = interp->threads.head) != NULL) {
         tstate_verify_not_active(tstate);
         tstate_delete_common(tstate);
-        free_threadstate(tstate);
+        free_threadstate((_PyThreadStateImpl *)tstate);
     }
 }
 
@@ -1555,7 +1596,7 @@ PyThreadState_Delete(PyThreadState *tstate)
     _Py_EnsureTstateNotNULL(tstate);
     tstate_verify_not_active(tstate);
     tstate_delete_common(tstate);
-    free_threadstate(tstate);
+    free_threadstate((_PyThreadStateImpl *)tstate);
 }
 
 
@@ -1563,10 +1604,11 @@ void
 _PyThreadState_DeleteCurrent(PyThreadState *tstate)
 {
     _Py_EnsureTstateNotNULL(tstate);
+    tstate_set_detached(tstate);
     tstate_delete_common(tstate);
     current_fast_clear(tstate->interp->runtime);
-    _PyEval_ReleaseLock(tstate);
-    free_threadstate(tstate);
+    _PyEval_ReleaseLock(tstate->interp, NULL);
+    free_threadstate((_PyThreadStateImpl *)tstate);
 }
 
 void
@@ -1616,80 +1658,11 @@ _PyThreadState_DeleteExcept(PyThreadState *tstate)
     for (p = list; p; p = next) {
         next = p->next;
         PyThreadState_Clear(p);
-        free_threadstate(p);
+        free_threadstate((_PyThreadStateImpl *)p);
     }
 }
 
 
-//-------------------------
-// "detached" thread states
-//-------------------------
-
-void
-_PyThreadState_InitDetached(PyThreadState *tstate, PyInterpreterState *interp)
-{
-    _PyRuntimeState *runtime = interp->runtime;
-
-    HEAD_LOCK(runtime);
-    interp->threads.next_unique_id += 1;
-    uint64_t id = interp->threads.next_unique_id;
-    HEAD_UNLOCK(runtime);
-
-    init_threadstate(tstate, interp, id);
-    // We do not call add_threadstate().
-}
-
-void
-_PyThreadState_ClearDetached(PyThreadState *tstate)
-{
-    assert(!tstate->_status.bound);
-    assert(!tstate->_status.bound_gilstate);
-    assert(tstate->datastack_chunk == NULL);
-    assert(tstate->thread_id == 0);
-    assert(tstate->native_thread_id == 0);
-    assert(tstate->next == NULL);
-    assert(tstate->prev == NULL);
-
-    PyThreadState_Clear(tstate);
-    clear_datastack(tstate);
-}
-
-void
-_PyThreadState_BindDetached(PyThreadState *tstate)
-{
-    assert(!_Py_IsMainInterpreter(
-        current_fast_get(tstate->interp->runtime)->interp));
-    assert(_Py_IsMainInterpreter(tstate->interp));
-    bind_tstate(tstate);
-    /* Unlike _PyThreadState_Bind(), we do not modify gilstate TSS. */
-}
-
-void
-_PyThreadState_UnbindDetached(PyThreadState *tstate)
-{
-    assert(!_Py_IsMainInterpreter(
-        current_fast_get(tstate->interp->runtime)->interp));
-    assert(_Py_IsMainInterpreter(tstate->interp));
-    assert(tstate_is_alive(tstate));
-    assert(!tstate->_status.active);
-    assert(gilstate_tss_get(tstate->interp->runtime) != tstate);
-
-    unbind_tstate(tstate);
-
-    /* This thread state may be bound/unbound repeatedly,
-       so we must erase evidence that it was ever bound (or unbound). */
-    tstate->_status.bound = 0;
-    tstate->_status.unbound = 0;
-
-    /* We must fully unlink the thread state from any OS thread,
-       to allow it to be bound more than once. */
-    tstate->thread_id = 0;
-#ifdef PY_HAVE_THREAD_NATIVE_ID
-    tstate->native_thread_id = 0;
-#endif
-}
-
-
 //----------
 // accessors
 //----------
@@ -1788,6 +1761,88 @@ tstate_deactivate(PyThreadState *tstate)
     // It will still be used in PyGILState_Ensure().
 }
 
+static int
+tstate_try_attach(PyThreadState *tstate)
+{
+#ifdef Py_GIL_DISABLED
+    int expected = _Py_THREAD_DETACHED;
+    if (_Py_atomic_compare_exchange_int(
+            &tstate->state,
+            &expected,
+            _Py_THREAD_ATTACHED)) {
+        return 1;
+    }
+    return 0;
+#else
+    assert(tstate->state == _Py_THREAD_DETACHED);
+    tstate->state = _Py_THREAD_ATTACHED;
+    return 1;
+#endif
+}
+
+static void
+tstate_set_detached(PyThreadState *tstate)
+{
+    assert(tstate->state == _Py_THREAD_ATTACHED);
+#ifdef Py_GIL_DISABLED
+    _Py_atomic_store_int(&tstate->state, _Py_THREAD_DETACHED);
+#else
+    tstate->state = _Py_THREAD_DETACHED;
+#endif
+}
+
+void
+_PyThreadState_Attach(PyThreadState *tstate)
+{
+#if defined(Py_DEBUG)
+    // This is called from PyEval_RestoreThread(). Similar
+    // to it, we need to ensure errno doesn't change.
+    int err = errno;
+#endif
+
+    _Py_EnsureTstateNotNULL(tstate);
+    if (current_fast_get(&_PyRuntime) != NULL) {
+        Py_FatalError("non-NULL old thread state");
+    }
+
+    _PyEval_AcquireLock(tstate);
+
+    // XXX assert(tstate_is_alive(tstate));
+    current_fast_set(&_PyRuntime, tstate);
+    tstate_activate(tstate);
+
+    if (!tstate_try_attach(tstate)) {
+        // TODO: Once stop-the-world GC is implemented for --disable-gil builds
+        // this will need to wait until the GC completes. For now, this case
+        // should never happen.
+        Py_FatalError("thread attach failed");
+    }
+
+    // Resume previous critical section. This acquires the lock(s) from the
+    // top-most critical section.
+    if (tstate->critical_section != 0) {
+        _PyCriticalSection_Resume(tstate);
+    }
+
+#if defined(Py_DEBUG)
+    errno = err;
+#endif
+}
+
+void
+_PyThreadState_Detach(PyThreadState *tstate)
+{
+    // XXX assert(tstate_is_alive(tstate) && tstate_is_bound(tstate));
+    assert(tstate->state == _Py_THREAD_ATTACHED);
+    assert(tstate == current_fast_get(&_PyRuntime));
+    if (tstate->critical_section != 0) {
+        _PyCriticalSection_SuspendAll(tstate);
+    }
+    tstate_set_detached(tstate);
+    tstate_deactivate(tstate);
+    current_fast_clear(&_PyRuntime);
+    _PyEval_ReleaseLock(tstate->interp, tstate);
+}
 
 //----------
 // other API
@@ -1846,7 +1901,7 @@ PyThreadState_SetAsyncExc(unsigned long id, PyObject *exc)
 //---------------------------------
 
 PyThreadState *
-_PyThreadState_UncheckedGet(void)
+PyThreadState_GetUnchecked(void)
 {
     return current_fast_get(&_PyRuntime);
 }
@@ -1860,56 +1915,15 @@ PyThreadState_Get(void)
     return tstate;
 }
 
-
-static void
-_swap_thread_states(_PyRuntimeState *runtime,
-                    PyThreadState *oldts, PyThreadState *newts)
-{
-    // XXX Do this only if oldts != NULL?
-    current_fast_clear(runtime);
-
-    if (oldts != NULL) {
-        // XXX assert(tstate_is_alive(oldts) && tstate_is_bound(oldts));
-        tstate_deactivate(oldts);
-    }
-
-    if (newts != NULL) {
-        // XXX assert(tstate_is_alive(newts));
-        assert(tstate_is_bound(newts));
-        current_fast_set(runtime, newts);
-        tstate_activate(newts);
-    }
-}
-
-PyThreadState *
-_PyThreadState_SwapNoGIL(PyThreadState *newts)
-{
-#if defined(Py_DEBUG)
-    /* This can be called from PyEval_RestoreThread(). Similar
-       to it, we need to ensure errno doesn't change.
-    */
-    int err = errno;
-#endif
-
-    PyThreadState *oldts = current_fast_get(&_PyRuntime);
-    _swap_thread_states(&_PyRuntime, oldts, newts);
-
-#if defined(Py_DEBUG)
-    errno = err;
-#endif
-    return oldts;
-}
-
 PyThreadState *
 _PyThreadState_Swap(_PyRuntimeState *runtime, PyThreadState *newts)
 {
     PyThreadState *oldts = current_fast_get(runtime);
     if (oldts != NULL) {
-        _PyEval_ReleaseLock(oldts);
+        _PyThreadState_Detach(oldts);
     }
-    _swap_thread_states(runtime, oldts, newts);
     if (newts != NULL) {
-        _PyEval_AcquireLock(newts);
+        _PyThreadState_Attach(newts);
     }
     return oldts;
 }
@@ -1924,6 +1938,10 @@ PyThreadState_Swap(PyThreadState *newts)
 void
 _PyThreadState_Bind(PyThreadState *tstate)
 {
+    // gh-104690: If Python is being finalized and PyInterpreterState_Delete()
+    // was called, tstate becomes a dangling pointer.
+    assert(_PyThreadState_CheckConsistency(tstate));
+
     bind_tstate(tstate);
     // This makes sure there's a gilstate tstate bound
     // as soon as possible.
@@ -2002,7 +2020,7 @@ _PyThread_CurrentFrames(void)
     for (i = runtime->interpreters.head; i != NULL; i = i->next) {
         PyThreadState *t;
         for (t = i->threads.head; t != NULL; t = t->next) {
-            _PyInterpreterFrame *frame = t->cframe->current_frame;
+            _PyInterpreterFrame *frame = t->current_frame;
             frame = _PyFrame_GetFirstComplete(frame);
             if (frame == NULL) {
                 continue;
@@ -2214,7 +2232,9 @@ PyGILState_Ensure(void)
     int has_gil;
     if (tcur == NULL) {
         /* Create a new Python thread state for this thread */
-        tcur = new_threadstate(runtime->gilstate.autoInterpreterState);
+        // XXX Use PyInterpreterState_EnsureThreadState()?
+        tcur = new_threadstate(runtime->gilstate.autoInterpreterState,
+                               _PyThreadState_WHENCE_GILSTATE);
         if (tcur == NULL) {
             Py_FatalError("Couldn't create thread-state for new thread");
         }
@@ -2292,494 +2312,9 @@ PyGILState_Release(PyGILState_STATE oldstate)
 }
 
 
-/**************************/
-/* cross-interpreter data */
-/**************************/
-
-/* cross-interpreter data */
-
-static inline void
-_xidata_init(_PyCrossInterpreterData *data)
-{
-    // If the value is being reused
-    // then _xidata_clear() should have been called already.
-    assert(data->data == NULL);
-    assert(data->obj == NULL);
-    *data = (_PyCrossInterpreterData){0};
-    data->interp = -1;
-}
-
-static inline void
-_xidata_clear(_PyCrossInterpreterData *data)
-{
-    if (data->free != NULL) {
-        data->free(data->data);
-    }
-    data->data = NULL;
-    Py_CLEAR(data->obj);
-}
-
-void
-_PyCrossInterpreterData_Init(_PyCrossInterpreterData *data,
-                             PyInterpreterState *interp,
-                             void *shared, PyObject *obj,
-                             xid_newobjectfunc new_object)
-{
-    assert(data != NULL);
-    assert(new_object != NULL);
-    _xidata_init(data);
-    data->data = shared;
-    if (obj != NULL) {
-        assert(interp != NULL);
-        // released in _PyCrossInterpreterData_Clear()
-        data->obj = Py_NewRef(obj);
-    }
-    // Ideally every object would know its owning interpreter.
-    // Until then, we have to rely on the caller to identify it
-    // (but we don't need it in all cases).
-    data->interp = (interp != NULL) ? interp->id : -1;
-    data->new_object = new_object;
-}
-
-int
-_PyCrossInterpreterData_InitWithSize(_PyCrossInterpreterData *data,
-                                     PyInterpreterState *interp,
-                                     const size_t size, PyObject *obj,
-                                     xid_newobjectfunc new_object)
-{
-    assert(size > 0);
-    // For now we always free the shared data in the same interpreter
-    // where it was allocated, so the interpreter is required.
-    assert(interp != NULL);
-    _PyCrossInterpreterData_Init(data, interp, NULL, obj, new_object);
-    data->data = PyMem_RawMalloc(size);
-    if (data->data == NULL) {
-        return -1;
-    }
-    data->free = PyMem_RawFree;
-    return 0;
-}
-
-void
-_PyCrossInterpreterData_Clear(PyInterpreterState *interp,
-                              _PyCrossInterpreterData *data)
-{
-    assert(data != NULL);
-    // This must be called in the owning interpreter.
-    assert(interp == NULL || data->interp == interp->id);
-    _xidata_clear(data);
-}
-
-static int
-_check_xidata(PyThreadState *tstate, _PyCrossInterpreterData *data)
-{
-    // data->data can be anything, including NULL, so we don't check it.
-
-    // data->obj may be NULL, so we don't check it.
-
-    if (data->interp < 0) {
-        _PyErr_SetString(tstate, PyExc_SystemError, "missing interp");
-        return -1;
-    }
-
-    if (data->new_object == NULL) {
-        _PyErr_SetString(tstate, PyExc_SystemError, "missing new_object func");
-        return -1;
-    }
-
-    // data->free may be NULL, so we don't check it.
-
-    return 0;
-}
-
-crossinterpdatafunc _PyCrossInterpreterData_Lookup(PyObject *);
-
-/* This is a separate func from _PyCrossInterpreterData_Lookup in order
-   to keep the registry code separate. */
-static crossinterpdatafunc
-_lookup_getdata(PyObject *obj)
-{
-    crossinterpdatafunc getdata = _PyCrossInterpreterData_Lookup(obj);
-    if (getdata == NULL && PyErr_Occurred() == 0)
-        PyErr_Format(PyExc_ValueError,
-                     "%S does not support cross-interpreter data", obj);
-    return getdata;
-}
-
-int
-_PyObject_CheckCrossInterpreterData(PyObject *obj)
-{
-    crossinterpdatafunc getdata = _lookup_getdata(obj);
-    if (getdata == NULL) {
-        return -1;
-    }
-    return 0;
-}
-
-int
-_PyObject_GetCrossInterpreterData(PyObject *obj, _PyCrossInterpreterData *data)
-{
-    _PyRuntimeState *runtime = &_PyRuntime;
-    PyThreadState *tstate = current_fast_get(runtime);
-#ifdef Py_DEBUG
-    // The caller must hold the GIL
-    _Py_EnsureTstateNotNULL(tstate);
-#endif
-    PyInterpreterState *interp = tstate->interp;
-
-    // Reset data before re-populating.
-    *data = (_PyCrossInterpreterData){0};
-    data->interp = -1;
-
-    // Call the "getdata" func for the object.
-    Py_INCREF(obj);
-    crossinterpdatafunc getdata = _lookup_getdata(obj);
-    if (getdata == NULL) {
-        Py_DECREF(obj);
-        return -1;
-    }
-    int res = getdata(tstate, obj, data);
-    Py_DECREF(obj);
-    if (res != 0) {
-        return -1;
-    }
-
-    // Fill in the blanks and validate the result.
-    data->interp = interp->id;
-    if (_check_xidata(tstate, data) != 0) {
-        (void)_PyCrossInterpreterData_Release(data);
-        return -1;
-    }
-
-    return 0;
-}
-
-PyObject *
-_PyCrossInterpreterData_NewObject(_PyCrossInterpreterData *data)
-{
-    return data->new_object(data);
-}
-
-typedef void (*releasefunc)(PyInterpreterState *, void *);
-
-static void
-_call_in_interpreter(PyInterpreterState *interp, releasefunc func, void *arg)
-{
-    /* We would use Py_AddPendingCall() if it weren't specific to the
-     * main interpreter (see bpo-33608).  In the meantime we take a
-     * naive approach.
-     */
-    _PyRuntimeState *runtime = interp->runtime;
-    PyThreadState *save_tstate = NULL;
-    if (interp != current_fast_get(runtime)->interp) {
-        // XXX Using the "head" thread isn't strictly correct.
-        PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
-        // XXX Possible GILState issues?
-        save_tstate = _PyThreadState_Swap(runtime, tstate);
-    }
-
-    // XXX Once the GIL is per-interpreter, this should be called with the
-    // calling interpreter's GIL released and the target interpreter's held.
-    func(interp, arg);
-
-    // Switch back.
-    if (save_tstate != NULL) {
-        _PyThreadState_Swap(runtime, save_tstate);
-    }
-}
-
-int
-_PyCrossInterpreterData_Release(_PyCrossInterpreterData *data)
-{
-    if (data->free == NULL && data->obj == NULL) {
-        // Nothing to release!
-        data->data = NULL;
-        return 0;
-    }
-
-    // Switch to the original interpreter.
-    PyInterpreterState *interp = _PyInterpreterState_LookUpID(data->interp);
-    if (interp == NULL) {
-        // The interpreter was already destroyed.
-        // This function shouldn't have been called.
-        // XXX Someone leaked some memory...
-        assert(PyErr_Occurred());
-        return -1;
-    }
-
-    // "Release" the data and/or the object.
-    _call_in_interpreter(interp,
-                         (releasefunc)_PyCrossInterpreterData_Clear, data);
-    return 0;
-}
-
-/* registry of {type -> crossinterpdatafunc} */
-
-/* For now we use a global registry of shareable classes.  An
-   alternative would be to add a tp_* slot for a class's
-   crossinterpdatafunc. It would be simpler and more efficient. */
-
-static int
-_xidregistry_add_type(struct _xidregistry *xidregistry, PyTypeObject *cls,
-                 crossinterpdatafunc getdata)
-{
-    // Note that we effectively replace already registered classes
-    // rather than failing.
-    struct _xidregitem *newhead = PyMem_RawMalloc(sizeof(struct _xidregitem));
-    if (newhead == NULL) {
-        return -1;
-    }
-    // XXX Assign a callback to clear the entry from the registry?
-    newhead->cls = PyWeakref_NewRef((PyObject *)cls, NULL);
-    if (newhead->cls == NULL) {
-        PyMem_RawFree(newhead);
-        return -1;
-    }
-    newhead->getdata = getdata;
-    newhead->prev = NULL;
-    newhead->next = xidregistry->head;
-    if (newhead->next != NULL) {
-        newhead->next->prev = newhead;
-    }
-    xidregistry->head = newhead;
-    return 0;
-}
-
-static struct _xidregitem *
-_xidregistry_remove_entry(struct _xidregistry *xidregistry,
-                          struct _xidregitem *entry)
-{
-    struct _xidregitem *next = entry->next;
-    if (entry->prev != NULL) {
-        assert(entry->prev->next == entry);
-        entry->prev->next = next;
-    }
-    else {
-        assert(xidregistry->head == entry);
-        xidregistry->head = next;
-    }
-    if (next != NULL) {
-        next->prev = entry->prev;
-    }
-    Py_DECREF(entry->cls);
-    PyMem_RawFree(entry);
-    return next;
-}
-
-static struct _xidregitem *
-_xidregistry_find_type(struct _xidregistry *xidregistry, PyTypeObject *cls)
-{
-    struct _xidregitem *cur = xidregistry->head;
-    while (cur != NULL) {
-        PyObject *registered = PyWeakref_GetObject(cur->cls);
-        if (registered == Py_None) {
-            // The weakly ref'ed object was freed.
-            cur = _xidregistry_remove_entry(xidregistry, cur);
-        }
-        else {
-            assert(PyType_Check(registered));
-            if (registered == (PyObject *)cls) {
-                return cur;
-            }
-            cur = cur->next;
-        }
-    }
-    return NULL;
-}
-
-static void _register_builtins_for_crossinterpreter_data(struct _xidregistry *xidregistry);
-
-int
-_PyCrossInterpreterData_RegisterClass(PyTypeObject *cls,
-                                       crossinterpdatafunc getdata)
-{
-    if (!PyType_Check(cls)) {
-        PyErr_Format(PyExc_ValueError, "only classes may be registered");
-        return -1;
-    }
-    if (getdata == NULL) {
-        PyErr_Format(PyExc_ValueError, "missing 'getdata' func");
-        return -1;
-    }
-
-    struct _xidregistry *xidregistry = &_PyRuntime.xidregistry ;
-    PyThread_acquire_lock(xidregistry->mutex, WAIT_LOCK);
-    if (xidregistry->head == NULL) {
-        _register_builtins_for_crossinterpreter_data(xidregistry);
-    }
-    int res = _xidregistry_add_type(xidregistry, cls, getdata);
-    PyThread_release_lock(xidregistry->mutex);
-    return res;
-}
-
-int
-_PyCrossInterpreterData_UnregisterClass(PyTypeObject *cls)
-{
-    int res = 0;
-    struct _xidregistry *xidregistry = &_PyRuntime.xidregistry ;
-    PyThread_acquire_lock(xidregistry->mutex, WAIT_LOCK);
-    struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
-    if (matched != NULL) {
-        (void)_xidregistry_remove_entry(xidregistry, matched);
-        res = 1;
-    }
-    PyThread_release_lock(xidregistry->mutex);
-    return res;
-}
-
-
-/* Cross-interpreter objects are looked up by exact match on the class.
-   We can reassess this policy when we move from a global registry to a
-   tp_* slot. */
-
-crossinterpdatafunc
-_PyCrossInterpreterData_Lookup(PyObject *obj)
-{
-    struct _xidregistry *xidregistry = &_PyRuntime.xidregistry ;
-    PyObject *cls = PyObject_Type(obj);
-    PyThread_acquire_lock(xidregistry->mutex, WAIT_LOCK);
-    if (xidregistry->head == NULL) {
-        _register_builtins_for_crossinterpreter_data(xidregistry);
-    }
-    struct _xidregitem *matched = _xidregistry_find_type(xidregistry,
-                                                         (PyTypeObject *)cls);
-    Py_DECREF(cls);
-    PyThread_release_lock(xidregistry->mutex);
-    return matched != NULL ? matched->getdata : NULL;
-}
-
-/* cross-interpreter data for builtin types */
-
-struct _shared_bytes_data {
-    char *bytes;
-    Py_ssize_t len;
-};
-
-static PyObject *
-_new_bytes_object(_PyCrossInterpreterData *data)
-{
-    struct _shared_bytes_data *shared = (struct _shared_bytes_data *)(data->data);
-    return PyBytes_FromStringAndSize(shared->bytes, shared->len);
-}
-
-static int
-_bytes_shared(PyThreadState *tstate, PyObject *obj,
-              _PyCrossInterpreterData *data)
-{
-    if (_PyCrossInterpreterData_InitWithSize(
-            data, tstate->interp, sizeof(struct _shared_bytes_data), obj,
-            _new_bytes_object
-            ) < 0)
-    {
-        return -1;
-    }
-    struct _shared_bytes_data *shared = (struct _shared_bytes_data *)data->data;
-    if (PyBytes_AsStringAndSize(obj, &shared->bytes, &shared->len) < 0) {
-        _PyCrossInterpreterData_Clear(tstate->interp, data);
-        return -1;
-    }
-    return 0;
-}
-
-struct _shared_str_data {
-    int kind;
-    const void *buffer;
-    Py_ssize_t len;
-};
-
-static PyObject *
-_new_str_object(_PyCrossInterpreterData *data)
-{
-    struct _shared_str_data *shared = (struct _shared_str_data *)(data->data);
-    return PyUnicode_FromKindAndData(shared->kind, shared->buffer, shared->len);
-}
-
-static int
-_str_shared(PyThreadState *tstate, PyObject *obj,
-            _PyCrossInterpreterData *data)
-{
-    if (_PyCrossInterpreterData_InitWithSize(
-            data, tstate->interp, sizeof(struct _shared_str_data), obj,
-            _new_str_object
-            ) < 0)
-    {
-        return -1;
-    }
-    struct _shared_str_data *shared = (struct _shared_str_data *)data->data;
-    shared->kind = PyUnicode_KIND(obj);
-    shared->buffer = PyUnicode_DATA(obj);
-    shared->len = PyUnicode_GET_LENGTH(obj);
-    return 0;
-}
-
-static PyObject *
-_new_long_object(_PyCrossInterpreterData *data)
-{
-    return PyLong_FromSsize_t((Py_ssize_t)(data->data));
-}
-
-static int
-_long_shared(PyThreadState *tstate, PyObject *obj,
-             _PyCrossInterpreterData *data)
-{
-    /* Note that this means the size of shareable ints is bounded by
-     * sys.maxsize.  Hence on 32-bit architectures that is half the
-     * size of maximum shareable ints on 64-bit.
-     */
-    Py_ssize_t value = PyLong_AsSsize_t(obj);
-    if (value == -1 && PyErr_Occurred()) {
-        if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
-            PyErr_SetString(PyExc_OverflowError, "try sending as bytes");
-        }
-        return -1;
-    }
-    _PyCrossInterpreterData_Init(data, tstate->interp, (void *)value, NULL,
-            _new_long_object);
-    // data->obj and data->free remain NULL
-    return 0;
-}
-
-static PyObject *
-_new_none_object(_PyCrossInterpreterData *data)
-{
-    // XXX Singleton refcounts are problematic across interpreters...
-    return Py_NewRef(Py_None);
-}
-
-static int
-_none_shared(PyThreadState *tstate, PyObject *obj,
-             _PyCrossInterpreterData *data)
-{
-    _PyCrossInterpreterData_Init(data, tstate->interp, NULL, NULL,
-            _new_none_object);
-    // data->data, data->obj and data->free remain NULL
-    return 0;
-}
-
-static void
-_register_builtins_for_crossinterpreter_data(struct _xidregistry *xidregistry)
-{
-    // None
-    if (_xidregistry_add_type(xidregistry, (PyTypeObject *)PyObject_Type(Py_None), _none_shared) != 0) {
-        Py_FatalError("could not register None for cross-interpreter sharing");
-    }
-
-    // int
-    if (_xidregistry_add_type(xidregistry, &PyLong_Type, _long_shared) != 0) {
-        Py_FatalError("could not register int for cross-interpreter sharing");
-    }
-
-    // bytes
-    if (_xidregistry_add_type(xidregistry, &PyBytes_Type, _bytes_shared) != 0) {
-        Py_FatalError("could not register bytes for cross-interpreter sharing");
-    }
-
-    // str
-    if (_xidregistry_add_type(xidregistry, &PyUnicode_Type, _str_shared) != 0) {
-        Py_FatalError("could not register str for cross-interpreter sharing");
-    }
-}
-
+/*************/
+/* Other API */
+/*************/
 
 _PyFrameEvalFunction
 _PyInterpreterState_GetEvalFrameFunc(PyInterpreterState *interp)
@@ -2814,7 +2349,7 @@ _PyInterpreterState_GetConfig(PyInterpreterState *interp)
 int
 _PyInterpreterState_GetConfigCopy(PyConfig *config)
 {
-    PyInterpreterState *interp = PyInterpreterState_Get();
+    PyInterpreterState *interp = _PyInterpreterState_GET();
 
     PyStatus status = _PyConfig_Copy(config, &interp->config);
     if (PyStatus_Exception(status)) {
@@ -2905,6 +2440,59 @@ _PyThreadState_PopFrame(PyThreadState *tstate, _PyInterpreterFrame * frame)
 }
 
 
-#ifdef __cplusplus
+#ifndef NDEBUG
+// Check that a Python thread state valid. In practice, this function is used
+// on a Python debug build to check if 'tstate' is a dangling pointer, if the
+// PyThreadState memory has been freed.
+//
+// Usage:
+//
+//     assert(_PyThreadState_CheckConsistency(tstate));
+int
+_PyThreadState_CheckConsistency(PyThreadState *tstate)
+{
+    assert(!_PyMem_IsPtrFreed(tstate));
+    assert(!_PyMem_IsPtrFreed(tstate->interp));
+    return 1;
 }
 #endif
+
+
+// Check if a Python thread must exit immediately, rather than taking the GIL
+// if Py_Finalize() has been called.
+//
+// When this function is called by a daemon thread after Py_Finalize() has been
+// called, the GIL does no longer exist.
+//
+// tstate can be a dangling pointer (point to freed memory): only tstate value
+// is used, the pointer is not deferenced.
+//
+// tstate must be non-NULL.
+int
+_PyThreadState_MustExit(PyThreadState *tstate)
+{
+    /* bpo-39877: Access _PyRuntime directly rather than using
+       tstate->interp->runtime to support calls from Python daemon threads.
+       After Py_Finalize() has been called, tstate can be a dangling pointer:
+       point to PyThreadState freed memory. */
+    unsigned long finalizing_id = _PyRuntimeState_GetFinalizingID(&_PyRuntime);
+    PyThreadState *finalizing = _PyRuntimeState_GetFinalizing(&_PyRuntime);
+    if (finalizing == NULL) {
+        // XXX This isn't completely safe from daemon thraeds,
+        // since tstate might be a dangling pointer.
+        finalizing = _PyInterpreterState_GetFinalizing(tstate->interp);
+        finalizing_id = _PyInterpreterState_GetFinalizingID(tstate->interp);
+    }
+    // XXX else check &_PyRuntime._main_interpreter._initial_thread
+    if (finalizing == NULL) {
+        return 0;
+    }
+    else if (finalizing == tstate) {
+        return 0;
+    }
+    else if (finalizing_id == PyThread_get_thread_ident()) {
+        /* gh-109793: we must have switched interpreters. */
+        return 0;
+    }
+    return 1;
+}
diff --git a/Python/pystrcmp.c b/Python/pystrcmp.c
index 9224ce4c706055..9796cb013ad450 100644
--- a/Python/pystrcmp.c
+++ b/Python/pystrcmp.c
@@ -11,11 +11,11 @@ PyOS_mystrnicmp(const char *s1, const char *s2, Py_ssize_t size)
         return 0;
     p1 = (const unsigned char *)s1;
     p2 = (const unsigned char *)s2;
-    for (; (--size > 0) && *p1 && *p2 && (tolower(*p1) == tolower(*p2));
+    for (; (--size > 0) && *p1 && *p2 && (Py_TOLOWER(*p1) == Py_TOLOWER(*p2));
          p1++, p2++) {
         ;
     }
-    return tolower(*p1) - tolower(*p2);
+    return Py_TOLOWER(*p1) - Py_TOLOWER(*p2);
 }
 
 int
@@ -23,8 +23,8 @@ PyOS_mystricmp(const char *s1, const char *s2)
 {
     const unsigned char *p1 = (const unsigned char *)s1;
     const unsigned char *p2 = (const unsigned char *)s2;
-    for (; *p1 && *p2 && (tolower(*p1) == tolower(*p2)); p1++, p2++) {
+    for (; *p1 && *p2 && (Py_TOLOWER(*p1) == Py_TOLOWER(*p2)); p1++, p2++) {
         ;
     }
-    return (tolower(*p1) - tolower(*p2));
+    return (Py_TOLOWER(*p1) - Py_TOLOWER(*p2));
 }
diff --git a/Python/pystrhex.c b/Python/pystrhex.c
index e4f06d766390e0..38484f5a7d4227 100644
--- a/Python/pystrhex.c
+++ b/Python/pystrhex.c
@@ -2,7 +2,7 @@
 
 #include "Python.h"
 #include "pycore_strhex.h"        // _Py_strhex_with_sep()
-#include <stdlib.h>               // abs()
+#include "pycore_unicodeobject.h" // _PyUnicode_CheckConsistency()
 
 static PyObject *_Py_strhex_impl(const char* argbuf, const Py_ssize_t arglen,
                                  PyObject* sep, int bytes_per_sep_group,
@@ -21,8 +21,6 @@ static PyObject *_Py_strhex_impl(const char* argbuf, const Py_ssize_t arglen,
             return NULL;
         }
         if (PyUnicode_Check(sep)) {
-            if (PyUnicode_READY(sep))
-                return NULL;
             if (PyUnicode_KIND(sep) != PyUnicode_1BYTE_KIND) {
                 PyErr_SetString(PyExc_ValueError, "sep must be ASCII.");
                 return NULL;
@@ -45,7 +43,7 @@ static PyObject *_Py_strhex_impl(const char* argbuf, const Py_ssize_t arglen,
         bytes_per_sep_group = 0;
     }
 
-    unsigned int abs_bytes_per_sep = abs(bytes_per_sep_group);
+    unsigned int abs_bytes_per_sep = Py_ABS(bytes_per_sep_group);
     Py_ssize_t resultlen = 0;
     if (bytes_per_sep_group && arglen > 0) {
         /* How many sep characters we'll be inserting. */
diff --git a/Python/pystrtod.c b/Python/pystrtod.c
index 9bb060e3d11979..16bf06f0e6cca2 100644
--- a/Python/pystrtod.c
+++ b/Python/pystrtod.c
@@ -3,7 +3,8 @@
 #include <Python.h>
 #include "pycore_dtoa.h"          // _Py_dg_strtod()
 #include "pycore_pymath.h"        // _PY_SHORT_FLOAT_REPR
-#include <locale.h>
+
+#include <locale.h>               // localeconv()
 
 /* Case-insensitive string match used for nan and inf detection; t should be
    lower-case.  Returns 1 for a successful match, 0 otherwise. */
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 05e7b4370869af..5f305aa00e08b9 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -12,17 +12,18 @@
 
 #include "Python.h"
 
-#include "pycore_ast.h"           // PyAST_mod2obj
-#include "pycore_ceval.h"         // _Py_EnterRecursiveCall
+#include "pycore_ast.h"           // PyAST_mod2obj()
+#include "pycore_ceval.h"         // _Py_EnterRecursiveCall()
 #include "pycore_compile.h"       // _PyAST_Compile()
 #include "pycore_interp.h"        // PyInterpreterState.importlib
 #include "pycore_object.h"        // _PyDebug_PrintTotalRefs()
 #include "pycore_parser.h"        // _PyParser_ASTFromString()
-#include "pycore_pyerrors.h"      // _PyErr_GetRaisedException, _Py_Offer_Suggestions
-#include "pycore_pylifecycle.h"   // _Py_UnhandledKeyboardInterrupt
+#include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
+#include "pycore_pylifecycle.h"   // _Py_FdIsInteractive()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
+#include "pycore_pythonrun.h"     // export _PyRun_InteractiveLoopObject()
 #include "pycore_sysmodule.h"     // _PySys_Audit()
-#include "pycore_traceback.h"     // _PyTraceBack_Print_Indented()
+#include "pycore_traceback.h"     // _PyTraceBack_Print()
 
 #include "errcode.h"              // E_EOF
 #include "marshal.h"              // PyMarshal_ReadLongFromFile()
@@ -36,22 +37,20 @@
 #  include "windows.h"
 #endif
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* Forward */
 static void flush_io(void);
 static PyObject *run_mod(mod_ty, PyObject *, PyObject *, PyObject *,
-                          PyCompilerFlags *, PyArena *);
+                          PyCompilerFlags *, PyArena *, PyObject*, int);
 static PyObject *run_pyc_file(FILE *, PyObject *, PyObject *,
                               PyCompilerFlags *);
 static int PyRun_InteractiveOneObjectEx(FILE *, PyObject *, PyCompilerFlags *);
 static PyObject* pyrun_file(FILE *fp, PyObject *filename, int start,
                             PyObject *globals, PyObject *locals, int closeit,
                             PyCompilerFlags *flags);
-
+static PyObject *
+_PyRun_StringFlagsWithName(const char *str, PyObject* name, int start,
+                           PyObject *globals, PyObject *locals, PyCompilerFlags *flags,
+                           int generate_new_source);
 
 int
 _PyRun_AnyFileObject(FILE *fp, PyObject *filename, int closeit,
@@ -179,90 +178,120 @@ PyRun_InteractiveLoopFlags(FILE *fp, const char *filename, PyCompilerFlags *flag
 }
 
 
-/* A PyRun_InteractiveOneObject() auxiliary function that does not print the
- * error on failure. */
+// Call _PyParser_ASTFromFile() with sys.stdin.encoding, sys.ps1 and sys.ps2
 static int
-PyRun_InteractiveOneObjectEx(FILE *fp, PyObject *filename,
-                             PyCompilerFlags *flags)
+pyrun_one_parse_ast(FILE *fp, PyObject *filename,
+                    PyCompilerFlags *flags, PyArena *arena,
+                    mod_ty *pmod, PyObject** interactive_src)
 {
-    PyObject *m, *d, *v, *w, *oenc = NULL;
-    mod_ty mod;
-    PyArena *arena;
-    const char *ps1 = "", *ps2 = "", *enc = NULL;
-    int errcode = 0;
     PyThreadState *tstate = _PyThreadState_GET();
 
+    // Get sys.stdin.encoding (as UTF-8)
+    PyObject *attr;  // borrowed ref
+    PyObject *encoding_obj = NULL;
+    const char *encoding = NULL;
     if (fp == stdin) {
-        /* Fetch encoding from sys.stdin if possible. */
-        v = _PySys_GetAttr(tstate, &_Py_ID(stdin));
-        if (v && v != Py_None) {
-            oenc = PyObject_GetAttr(v, &_Py_ID(encoding));
-            if (oenc)
-                enc = PyUnicode_AsUTF8(oenc);
-            if (!enc)
-                PyErr_Clear();
+        attr = _PySys_GetAttr(tstate, &_Py_ID(stdin));
+        if (attr && attr != Py_None) {
+            encoding_obj = PyObject_GetAttr(attr, &_Py_ID(encoding));
+            if (encoding_obj) {
+                encoding = PyUnicode_AsUTF8(encoding_obj);
+                if (!encoding) {
+                    PyErr_Clear();
+                }
+            }
         }
     }
-    v = _PySys_GetAttr(tstate, &_Py_ID(ps1));
-    if (v != NULL) {
-        v = PyObject_Str(v);
-        if (v == NULL)
+
+    // Get sys.ps1 (as UTF-8)
+    attr = _PySys_GetAttr(tstate, &_Py_ID(ps1));
+    PyObject *ps1_obj = NULL;
+    const char *ps1 = "";
+    if (attr != NULL) {
+        ps1_obj = PyObject_Str(attr);
+        if (ps1_obj == NULL) {
             PyErr_Clear();
-        else if (PyUnicode_Check(v)) {
-            ps1 = PyUnicode_AsUTF8(v);
+        }
+        else if (PyUnicode_Check(ps1_obj)) {
+            ps1 = PyUnicode_AsUTF8(ps1_obj);
             if (ps1 == NULL) {
                 PyErr_Clear();
                 ps1 = "";
             }
         }
     }
-    w = _PySys_GetAttr(tstate, &_Py_ID(ps2));
-    if (w != NULL) {
-        w = PyObject_Str(w);
-        if (w == NULL)
+
+    // Get sys.ps2 (as UTF-8)
+    attr = _PySys_GetAttr(tstate, &_Py_ID(ps2));
+    PyObject *ps2_obj = NULL;
+    const char *ps2 = "";
+    if (attr != NULL) {
+        ps2_obj = PyObject_Str(attr);
+        if (ps2_obj == NULL) {
             PyErr_Clear();
-        else if (PyUnicode_Check(w)) {
-            ps2 = PyUnicode_AsUTF8(w);
+        }
+        else if (PyUnicode_Check(ps2_obj)) {
+            ps2 = PyUnicode_AsUTF8(ps2_obj);
             if (ps2 == NULL) {
                 PyErr_Clear();
                 ps2 = "";
             }
         }
     }
-    arena = _PyArena_New();
-    if (arena == NULL) {
-        Py_XDECREF(v);
-        Py_XDECREF(w);
-        Py_XDECREF(oenc);
-        return -1;
-    }
-
-    mod = _PyParser_ASTFromFile(fp, filename, enc, Py_single_input,
-                                ps1, ps2, flags, &errcode, arena);
 
-    Py_XDECREF(v);
-    Py_XDECREF(w);
-    Py_XDECREF(oenc);
-    if (mod == NULL) {
-        _PyArena_Free(arena);
+    int errcode = 0;
+    *pmod = _PyParser_InteractiveASTFromFile(fp, filename, encoding,
+                                             Py_single_input, ps1, ps2,
+                                             flags, &errcode, interactive_src, arena);
+    Py_XDECREF(ps1_obj);
+    Py_XDECREF(ps2_obj);
+    Py_XDECREF(encoding_obj);
+
+    if (*pmod == NULL) {
         if (errcode == E_EOF) {
             PyErr_Clear();
             return E_EOF;
         }
         return -1;
     }
-    m = PyImport_AddModuleObject(&_Py_ID(__main__));
-    if (m == NULL) {
+    return 0;
+}
+
+
+/* A PyRun_InteractiveOneObject() auxiliary function that does not print the
+ * error on failure. */
+static int
+PyRun_InteractiveOneObjectEx(FILE *fp, PyObject *filename,
+                             PyCompilerFlags *flags)
+{
+    PyArena *arena = _PyArena_New();
+    if (arena == NULL) {
+        return -1;
+    }
+
+    mod_ty mod;
+    PyObject *interactive_src;
+    int parse_res = pyrun_one_parse_ast(fp, filename, flags, arena, &mod, &interactive_src);
+    if (parse_res != 0) {
+        _PyArena_Free(arena);
+        return parse_res;
+    }
+
+    PyObject *main_module = PyImport_AddModuleRef("__main__");
+    if (main_module == NULL) {
         _PyArena_Free(arena);
         return -1;
     }
-    d = PyModule_GetDict(m);
-    v = run_mod(mod, filename, d, d, flags, arena);
+    PyObject *main_dict = PyModule_GetDict(main_module);  // borrowed ref
+
+    PyObject *res = run_mod(mod, filename, main_dict, main_dict, flags, arena, interactive_src, 1);
     _PyArena_Free(arena);
-    if (v == NULL) {
+    Py_DECREF(main_module);
+    if (res == NULL) {
         return -1;
     }
-    Py_DECREF(v);
+    Py_DECREF(res);
+
     flush_io();
     return 0;
 }
@@ -376,22 +405,23 @@ int
 _PyRun_SimpleFileObject(FILE *fp, PyObject *filename, int closeit,
                         PyCompilerFlags *flags)
 {
-    PyObject *m, *d, *v;
-    int set_file_name = 0, ret = -1;
+    int ret = -1;
 
-    m = PyImport_AddModule("__main__");
-    if (m == NULL)
+    PyObject *main_module = PyImport_AddModuleRef("__main__");
+    if (main_module == NULL)
         return -1;
-    Py_INCREF(m);
-    d = PyModule_GetDict(m);
-    if (_PyDict_GetItemStringWithError(d, "__file__") == NULL) {
-        if (PyErr_Occurred()) {
-            goto done;
-        }
-        if (PyDict_SetItemString(d, "__file__", filename) < 0) {
+    PyObject *dict = PyModule_GetDict(main_module);  // borrowed ref
+
+    int set_file_name = 0;
+    int has_file = PyDict_ContainsString(dict, "__file__");
+    if (has_file < 0) {
+        goto done;
+    }
+    if (!has_file) {
+        if (PyDict_SetItemString(dict, "__file__", filename) < 0) {
             goto done;
         }
-        if (PyDict_SetItemString(d, "__cached__", Py_None) < 0) {
+        if (PyDict_SetItemString(dict, "__cached__", Py_None) < 0) {
             goto done;
         }
         set_file_name = 1;
@@ -402,6 +432,7 @@ _PyRun_SimpleFileObject(FILE *fp, PyObject *filename, int closeit,
         goto done;
     }
 
+    PyObject *v;
     if (pyc) {
         FILE *pyc_fp;
         /* Try to run a pyc file. First, re-open in binary */
@@ -415,42 +446,43 @@ _PyRun_SimpleFileObject(FILE *fp, PyObject *filename, int closeit,
             goto done;
         }
 
-        if (set_main_loader(d, filename, "SourcelessFileLoader") < 0) {
+        if (set_main_loader(dict, filename, "SourcelessFileLoader") < 0) {
             fprintf(stderr, "python: failed to set __main__.__loader__\n");
             ret = -1;
             fclose(pyc_fp);
             goto done;
         }
-        v = run_pyc_file(pyc_fp, d, d, flags);
+        v = run_pyc_file(pyc_fp, dict, dict, flags);
     } else {
         /* When running from stdin, leave __main__.__loader__ alone */
         if (PyUnicode_CompareWithASCIIString(filename, "<stdin>") != 0 &&
-            set_main_loader(d, filename, "SourceFileLoader") < 0) {
+            set_main_loader(dict, filename, "SourceFileLoader") < 0) {
             fprintf(stderr, "python: failed to set __main__.__loader__\n");
             ret = -1;
             goto done;
         }
-        v = pyrun_file(fp, filename, Py_file_input, d, d,
+        v = pyrun_file(fp, filename, Py_file_input, dict, dict,
                        closeit, flags);
     }
     flush_io();
     if (v == NULL) {
-        Py_CLEAR(m);
+        Py_CLEAR(main_module);
         PyErr_Print();
         goto done;
     }
     Py_DECREF(v);
     ret = 0;
+
   done:
     if (set_file_name) {
-        if (PyDict_DelItemString(d, "__file__")) {
+        if (PyDict_DelItemString(dict, "__file__")) {
             PyErr_Clear();
         }
-        if (PyDict_DelItemString(d, "__cached__")) {
+        if (PyDict_DelItemString(dict, "__cached__")) {
             PyErr_Clear();
         }
     }
-    Py_XDECREF(m);
+    Py_XDECREF(main_module);
     return ret;
 }
 
@@ -470,220 +502,41 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit,
 
 
 int
-PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags)
-{
-    PyObject *m, *d, *v;
-    m = PyImport_AddModule("__main__");
-    if (m == NULL)
-        return -1;
-    d = PyModule_GetDict(m);
-    v = PyRun_StringFlags(command, Py_file_input, d, d, flags);
-    if (v == NULL) {
-        PyErr_Print();
+_PyRun_SimpleStringFlagsWithName(const char *command, const char* name, PyCompilerFlags *flags) {
+    PyObject *main_module = PyImport_AddModuleRef("__main__");
+    if (main_module == NULL) {
         return -1;
     }
-    Py_DECREF(v);
-    return 0;
-}
-
-static int
-parse_syntax_error(PyObject *err, PyObject **message, PyObject **filename,
-                   Py_ssize_t *lineno, Py_ssize_t *offset,
-                   Py_ssize_t* end_lineno, Py_ssize_t* end_offset,
-                   PyObject **text)
-{
-    Py_ssize_t hold;
-    PyObject *v;
-
-    *message = NULL;
-    *filename = NULL;
+    PyObject *dict = PyModule_GetDict(main_module);  // borrowed ref
 
-    /* new style errors.  `err' is an instance */
-    *message = PyObject_GetAttr(err, &_Py_ID(msg));
-    if (!*message)
-        goto finally;
-
-    v = PyObject_GetAttr(err, &_Py_ID(filename));
-    if (!v)
-        goto finally;
-    if (v == Py_None) {
-        Py_DECREF(v);
-        _Py_DECLARE_STR(anon_string, "<string>");
-        *filename = Py_NewRef(&_Py_STR(anon_string));
-    }
-    else {
-        *filename = v;
-    }
-
-    v = PyObject_GetAttr(err, &_Py_ID(lineno));
-    if (!v)
-        goto finally;
-    hold = PyLong_AsSsize_t(v);
-    Py_DECREF(v);
-    if (hold < 0 && PyErr_Occurred())
-        goto finally;
-    *lineno = hold;
-
-    v = PyObject_GetAttr(err, &_Py_ID(offset));
-    if (!v)
-        goto finally;
-    if (v == Py_None) {
-        *offset = -1;
-        Py_DECREF(v);
+    PyObject *res = NULL;
+    if (name == NULL) {
+        res = PyRun_StringFlags(command, Py_file_input, dict, dict, flags);
     } else {
-        hold = PyLong_AsSsize_t(v);
-        Py_DECREF(v);
-        if (hold < 0 && PyErr_Occurred())
-            goto finally;
-        *offset = hold;
-    }
-
-    if (Py_TYPE(err) == (PyTypeObject*)PyExc_SyntaxError) {
-        v = PyObject_GetAttr(err, &_Py_ID(end_lineno));
-        if (!v) {
-            PyErr_Clear();
-            *end_lineno = *lineno;
-        }
-        else if (v == Py_None) {
-            *end_lineno = *lineno;
-            Py_DECREF(v);
-        } else {
-            hold = PyLong_AsSsize_t(v);
-            Py_DECREF(v);
-            if (hold < 0 && PyErr_Occurred())
-                goto finally;
-            *end_lineno = hold;
-        }
-
-        v = PyObject_GetAttr(err, &_Py_ID(end_offset));
-        if (!v) {
-            PyErr_Clear();
-            *end_offset = -1;
-        }
-        else if (v == Py_None) {
-            *end_offset = -1;
-            Py_DECREF(v);
-        } else {
-            hold = PyLong_AsSsize_t(v);
-            Py_DECREF(v);
-            if (hold < 0 && PyErr_Occurred())
-                goto finally;
-            *end_offset = hold;
+        PyObject* the_name = PyUnicode_FromString(name);
+        if (!the_name) {
+            PyErr_Print();
+            return -1;
         }
-    } else {
-        // SyntaxError subclasses
-        *end_lineno = *lineno;
-        *end_offset = -1;
-    }
-
-    v = PyObject_GetAttr(err, &_Py_ID(text));
-    if (!v)
-        goto finally;
-    if (v == Py_None) {
-        Py_DECREF(v);
-        *text = NULL;
+        res = _PyRun_StringFlagsWithName(command, the_name, Py_file_input, dict, dict, flags, 0);
+        Py_DECREF(the_name);
     }
-    else {
-        *text = v;
+    Py_DECREF(main_module);
+    if (res == NULL) {
+        PyErr_Print();
+        return -1;
     }
-    return 1;
 
-finally:
-    Py_XDECREF(*message);
-    Py_XDECREF(*filename);
+    Py_DECREF(res);
     return 0;
 }
 
-static int
-print_error_text(PyObject *f, Py_ssize_t offset, Py_ssize_t end_offset,
-                 PyObject *text_obj)
+int
+PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags)
 {
-    size_t caret_repetitions = (end_offset > 0 && end_offset > offset) ?
-                               end_offset - offset : 1;
-
-    /* Convert text to a char pointer; return if error */
-    const char *text = PyUnicode_AsUTF8(text_obj);
-    if (text == NULL) {
-        return -1;
-    }
-
-    /* Convert offset from 1-based to 0-based */
-    offset--;
-
-    /* Strip leading whitespace from text, adjusting offset as we go */
-    while (*text == ' ' || *text == '\t' || *text == '\f') {
-        text++;
-        offset--;
-    }
-
-    /* Calculate text length excluding trailing newline */
-    Py_ssize_t len = strlen(text);
-    if (len > 0 && text[len-1] == '\n') {
-        len--;
-    }
-
-    /* Clip offset to at most len */
-    if (offset > len) {
-        offset = len;
-    }
-
-    /* Skip past newlines embedded in text */
-    for (;;) {
-        const char *nl = strchr(text, '\n');
-        if (nl == NULL) {
-            break;
-        }
-        Py_ssize_t inl = nl - text;
-        if (inl >= offset) {
-            break;
-        }
-        inl += 1;
-        text += inl;
-        len -= inl;
-        offset -= (int)inl;
-    }
-
-    /* Print text */
-    if (PyFile_WriteString("    ", f) < 0) {
-        return -1;
-    }
-    if (PyFile_WriteString(text, f) < 0) {
-        return -1;
-    }
-
-    /* Make sure there's a newline at the end */
-    if (text[len] != '\n') {
-        if (PyFile_WriteString("\n", f) < 0) {
-            return -1;
-        }
-    }
-
-    /* Don't print caret if it points to the left of the text */
-    if (offset < 0) {
-        return 0;
-    }
-
-    /* Write caret line */
-    if (PyFile_WriteString("    ", f) < 0) {
-        return -1;
-    }
-    while (--offset >= 0) {
-        if (PyFile_WriteString(" ", f) < 0) {
-            return -1;
-        }
-    }
-    for (size_t caret_iter=0; caret_iter < caret_repetitions ; caret_iter++) {
-        if (PyFile_WriteString("^", f) < 0) {
-            return -1;
-        }
-    }
-    if (PyFile_WriteString("\n", f) < 0) {
-        return -1;
-    }
-    return 0;
+    return _PyRun_SimpleStringFlagsWithName(command, NULL, flags);
 }
 
-
 int
 _Py_HandleSystemExit(int *exitcode_p)
 {
@@ -797,14 +650,11 @@ _PyErr_PrintEx(PyThreadState *tstate, int set_sys_last_vars)
             PyErr_Clear();
             goto done;
         }
-        _PyErr_WriteUnraisableMsg("in audit hook", NULL);
+        PyErr_FormatUnraisable("Exception ignored in audit hook");
     }
     if (hook) {
-        PyObject* stack[3];
-        stack[0] = typ;
-        stack[1] = exc;
-        stack[2] = tb;
-        PyObject *result = _PyObject_FastCall(hook, stack, 3);
+        PyObject* args[3] = {typ, exc, tb};
+        PyObject *result = PyObject_Vectorcall(hook, args, 3, NULL);
         if (result == NULL) {
             handle_system_exit();
 
@@ -855,29 +705,13 @@ struct exception_print_context
 {
     PyObject *file;
     PyObject *seen;            // Prevent cycles in recursion
-    int exception_group_depth; // nesting level of current exception group
-    bool need_close;           // Need a closing bottom frame
-    int max_group_width;       // Maximum number of children of each EG
-    int max_group_depth;       // Maximum nesting level of EGs
 };
 
-#define EXC_MARGIN(ctx) ((ctx)->exception_group_depth ? "| " : "")
-#define EXC_INDENT(ctx) (2 * (ctx)->exception_group_depth)
-
-static int
-write_indented_margin(struct exception_print_context *ctx, PyObject *f)
-{
-    return _Py_WriteIndentedMargin(EXC_INDENT(ctx), EXC_MARGIN(ctx), f);
-}
-
 static int
 print_exception_invalid_type(struct exception_print_context *ctx,
                              PyObject *value)
 {
     PyObject *f = ctx->file;
-    if (_Py_WriteIndent(EXC_INDENT(ctx), f) < 0) {
-        return -1;
-    }
     const char *const msg = "TypeError: print_exception(): Exception expected "
                             "for value, ";
     if (PyFile_WriteString(msg, f) < 0) {
@@ -901,15 +735,7 @@ print_exception_traceback(struct exception_print_context *ctx, PyObject *value)
     PyObject *tb = PyException_GetTraceback(value);
     if (tb && tb != Py_None) {
         const char *header = EXCEPTION_TB_HEADER;
-        const char *header_margin = EXC_MARGIN(ctx);
-        if (_PyBaseExceptionGroup_Check(value)) {
-            header = EXCEPTION_GROUP_TB_HEADER;
-            if (ctx->exception_group_depth == 1) {
-                header_margin = "+ ";
-            }
-        }
-        err = _PyTraceBack_Print_Indented(
-            tb, EXC_INDENT(ctx), EXC_MARGIN(ctx), header_margin, header, f);
+        err = _PyTraceBack_Print(tb, header, f);
     }
     Py_XDECREF(tb);
     return err;
@@ -922,7 +748,7 @@ print_exception_file_and_line(struct exception_print_context *ctx,
     PyObject *f = ctx->file;
 
     PyObject *tmp;
-    int res = _PyObject_LookupAttr(*value_p, &_Py_ID(print_file_and_line), &tmp);
+    int res = PyObject_GetOptionalAttr(*value_p, &_Py_ID(print_file_and_line), &tmp);
     if (res <= 0) {
         if (res < 0) {
             PyErr_Clear();
@@ -931,16 +757,20 @@ print_exception_file_and_line(struct exception_print_context *ctx,
     }
     Py_DECREF(tmp);
 
-    PyObject *message, *filename, *text;
-    Py_ssize_t lineno, offset, end_lineno, end_offset;
-    if (!parse_syntax_error(*value_p, &message, &filename,
-                            &lineno, &offset,
-                            &end_lineno, &end_offset, &text)) {
-        PyErr_Clear();
-        return 0;
+    PyObject *filename = NULL;
+    Py_ssize_t lineno = 0;
+    PyObject* v = PyObject_GetAttr(*value_p, &_Py_ID(filename));
+    if (!v) {
+        return -1;
+    }
+    if (v == Py_None) {
+        Py_DECREF(v);
+        _Py_DECLARE_STR(anon_string, "<string>");
+        filename = Py_NewRef(&_Py_STR(anon_string));
+    }
+    else {
+        filename = v;
     }
-
-    Py_SETREF(*value_p, message);
 
     PyObject *line = PyUnicode_FromFormat("  File \"%S\", line %zd\n",
                                           filename, lineno);
@@ -948,40 +778,16 @@ print_exception_file_and_line(struct exception_print_context *ctx,
     if (line == NULL) {
         goto error;
     }
-    if (write_indented_margin(ctx, f) < 0) {
-        goto error;
-    }
     if (PyFile_WriteObject(line, f, Py_PRINT_RAW) < 0) {
         goto error;
     }
     Py_CLEAR(line);
 
-    if (text != NULL) {
-        Py_ssize_t line_size;
-        const char *error_line = PyUnicode_AsUTF8AndSize(text, &line_size);
-        // If the location of the error spawn multiple lines, we want
-        // to just print the first one and highlight everything until
-        // the end of that one since we don't support multi-line error
-        // messages.
-        if (end_lineno > lineno) {
-            end_offset = (error_line != NULL) ? line_size : -1;
-        }
-        // Limit the amount of '^' that we can display to
-        // the size of the text in the source line.
-        if (error_line != NULL && end_offset > line_size + 1) {
-            end_offset = line_size + 1;
-        }
-        if (print_error_text(f, offset, end_offset, text) < 0) {
-            goto error;
-        }
-        Py_DECREF(text);
-    }
     assert(!PyErr_Occurred());
     return 0;
 
 error:
     Py_XDECREF(line);
-    Py_XDECREF(text);
     return -1;
 }
 
@@ -992,11 +798,14 @@ print_exception_message(struct exception_print_context *ctx, PyObject *type,
 {
     PyObject *f = ctx->file;
 
-    assert(PyExceptionClass_Check(type));
-
-    if (write_indented_margin(ctx, f) < 0) {
+    if (PyErr_GivenExceptionMatches(value, PyExc_MemoryError)) {
+        // The Python APIs in this function require allocating memory
+        // for various objects. If we're out of memory, we can't do that,
         return -1;
     }
+
+    assert(PyExceptionClass_Check(type));
+
     PyObject *modulename = PyObject_GetAttr(type, &_Py_ID(__module__));
     if (modulename == NULL || !PyUnicode_Check(modulename)) {
         Py_XDECREF(modulename);
@@ -1070,110 +879,6 @@ print_exception_message(struct exception_print_context *ctx, PyObject *type,
     return 0;
 }
 
-static int
-print_exception_suggestions(struct exception_print_context *ctx,
-                            PyObject *value)
-{
-    PyObject *f = ctx->file;
-    PyObject *suggestions = _Py_Offer_Suggestions(value);
-    if (suggestions) {
-        if (PyFile_WriteObject(suggestions, f, Py_PRINT_RAW) < 0) {
-            goto error;
-        }
-        Py_DECREF(suggestions);
-    }
-    else if (PyErr_Occurred()) {
-        PyErr_Clear();
-    }
-    return 0;
-error:
-    Py_XDECREF(suggestions);
-    return -1;
-}
-
-static int
-print_exception_notes(struct exception_print_context *ctx, PyObject *value)
-{
-    PyObject *f = ctx->file;
-
-    if (!PyExceptionInstance_Check(value)) {
-        return 0;
-    }
-
-    if (!PyObject_HasAttr(value, &_Py_ID(__notes__))) {
-        return 0;
-    }
-    PyObject *notes = PyObject_GetAttr(value, &_Py_ID(__notes__));
-    if (notes == NULL) {
-        return -1;
-    }
-    if (!PySequence_Check(notes) || PyUnicode_Check(notes) || PyBytes_Check(notes)) {
-        int res = 0;
-        if (write_indented_margin(ctx, f) < 0) {
-            res = -1;
-        }
-        PyObject *s = PyObject_Repr(notes);
-        if (s == NULL) {
-            PyErr_Clear();
-            res = PyFile_WriteString("<__notes__ repr() failed>", f);
-        }
-        else {
-            res = PyFile_WriteObject(s, f, Py_PRINT_RAW);
-            Py_DECREF(s);
-        }
-        Py_DECREF(notes);
-        if (PyFile_WriteString("\n", f) < 0) {
-            res = -1;
-        }
-        return res;
-    }
-    Py_ssize_t num_notes = PySequence_Length(notes);
-    PyObject *lines = NULL;
-    for (Py_ssize_t ni = 0; ni < num_notes; ni++) {
-        PyObject *note = PySequence_GetItem(notes, ni);
-        PyObject *note_str = PyObject_Str(note);
-        Py_DECREF(note);
-
-        if (note_str == NULL) {
-            PyErr_Clear();
-            if (PyFile_WriteString("<note str() failed>", f) < 0) {
-                goto error;
-            }
-        }
-        else {
-            lines = PyUnicode_Splitlines(note_str, 1);
-            Py_DECREF(note_str);
-
-            if (lines == NULL) {
-                goto error;
-            }
-
-            Py_ssize_t n = PyList_GET_SIZE(lines);
-            for (Py_ssize_t i = 0; i < n; i++) {
-                PyObject *line = PyList_GET_ITEM(lines, i);
-                assert(PyUnicode_Check(line));
-                if (write_indented_margin(ctx, f) < 0) {
-                    goto error;
-                }
-                if (PyFile_WriteObject(line, f, Py_PRINT_RAW) < 0) {
-                    goto error;
-                }
-            }
-            Py_CLEAR(lines);
-        }
-        if (PyFile_WriteString("\n", f) < 0) {
-            goto error;
-        }
-    }
-
-    Py_DECREF(notes);
-    return 0;
-error:
-    Py_XDECREF(lines);
-    Py_DECREF(notes);
-    return -1;
-}
-
 static int
 print_exception(struct exception_print_context *ctx, PyObject *value)
 {
@@ -1190,7 +895,7 @@ print_exception(struct exception_print_context *ctx, PyObject *value)
         goto error;
     }
 
-    /* grab the type now because value can change below */
+    /* grab the type and notes now because value can change below */
     PyObject *type = (PyObject *) Py_TYPE(value);
 
     if (print_exception_file_and_line(ctx, &value) < 0) {
@@ -1199,16 +904,9 @@ print_exception(struct exception_print_context *ctx, PyObject *value)
     if (print_exception_message(ctx, type, value) < 0) {
         goto error;
     }
-    if (print_exception_suggestions(ctx, value) < 0) {
-        goto error;
-    }
     if (PyFile_WriteString("\n", f) < 0) {
         goto error;
     }
-    if (print_exception_notes(ctx, value) < 0) {
-        goto error;
-    }
-
     Py_DECREF(value);
     assert(!PyErr_Occurred());
     return 0;
@@ -1236,29 +934,18 @@ print_chained(struct exception_print_context* ctx, PyObject *value,
     if (_Py_EnterRecursiveCall(" in print_chained")) {
         return -1;
     }
-    bool need_close = ctx->need_close;
     int res = print_exception_recursive(ctx, value);
-    ctx->need_close = need_close;
     _Py_LeaveRecursiveCall();
     if (res < 0) {
         return -1;
     }
 
-    if (write_indented_margin(ctx, f) < 0) {
-        return -1;
-    }
     if (PyFile_WriteString("\n", f) < 0) {
         return -1;
     }
-    if (write_indented_margin(ctx, f) < 0) {
-        return -1;
-    }
     if (PyFile_WriteString(message, f) < 0) {
         return -1;
     }
-    if (write_indented_margin(ctx, f) < 0) {
-        return -1;
-    }
     if (PyFile_WriteString("\n", f) < 0) {
         return -1;
     }
@@ -1335,133 +1022,6 @@ print_exception_cause_and_context(struct exception_print_context *ctx,
     return 0;
 }
 
-static int
-print_exception_group(struct exception_print_context *ctx, PyObject *value)
-{
-    PyObject *f = ctx->file;
-
-    if (ctx->exception_group_depth > ctx->max_group_depth) {
-        /* depth exceeds limit */
-
-        if (write_indented_margin(ctx, f) < 0) {
-            return -1;
-        }
-
-        PyObject *line = PyUnicode_FromFormat("... (max_group_depth is %d)\n",
-                                              ctx->max_group_depth);
-        if (line == NULL) {
-            return -1;
-        }
-        int err = PyFile_WriteObject(line, f, Py_PRINT_RAW);
-        Py_DECREF(line);
-        return err;
-    }
-
-    if (ctx->exception_group_depth == 0) {
-        ctx->exception_group_depth += 1;
-    }
-    if (print_exception(ctx, value) < 0) {
-        return -1;
-    }
-
-    PyObject *excs = ((PyBaseExceptionGroupObject *)value)->excs;
-    assert(excs && PyTuple_Check(excs));
-    Py_ssize_t num_excs = PyTuple_GET_SIZE(excs);
-    assert(num_excs > 0);
-    Py_ssize_t n;
-    if (num_excs <= ctx->max_group_width) {
-        n = num_excs;
-    }
-    else {
-        n = ctx->max_group_width + 1;
-    }
-
-    ctx->need_close = false;
-    for (Py_ssize_t i = 0; i < n; i++) {
-        bool last_exc = (i == n - 1);
-        if (last_exc) {
-            // The closing frame may be added in a recursive call
-            ctx->need_close = true;
-        }
-
-        if (_Py_WriteIndent(EXC_INDENT(ctx), f) < 0) {
-            return -1;
-        }
-        bool truncated = (i >= ctx->max_group_width);
-        PyObject *line;
-        if (!truncated) {
-            line = PyUnicode_FromFormat(
-                "%s+---------------- %zd ----------------\n",
-                (i == 0) ? "+-" : "  ", i + 1);
-        }
-        else {
-            line = PyUnicode_FromFormat(
-                "%s+---------------- ... ----------------\n",
-                (i == 0) ? "+-" : "  ");
-        }
-        if (line == NULL) {
-            return -1;
-        }
-        int err = PyFile_WriteObject(line, f, Py_PRINT_RAW);
-        Py_DECREF(line);
-        if (err < 0) {
-            return -1;
-        }
-
-        ctx->exception_group_depth += 1;
-        PyObject *exc = PyTuple_GET_ITEM(excs, i);
-
-        if (!truncated) {
-            if (_Py_EnterRecursiveCall(" in print_exception_group")) {
-                return -1;
-            }
-            int res = print_exception_recursive(ctx, exc);
-            _Py_LeaveRecursiveCall();
-            if (res < 0) {
-                return -1;
-            }
-        }
-        else {
-            Py_ssize_t excs_remaining = num_excs - ctx->max_group_width;
-
-            if (write_indented_margin(ctx, f) < 0) {
-                return -1;
-            }
-
-            PyObject *line = PyUnicode_FromFormat(
-                "and %zd more exception%s\n",
-                excs_remaining, excs_remaining > 1 ? "s" : "");
-
-            if (line == NULL) {
-                return -1;
-            }
-
-            int err = PyFile_WriteObject(line, f, Py_PRINT_RAW);
-            Py_DECREF(line);
-            if (err < 0) {
-                return -1;
-            }
-        }
-
-        if (last_exc && ctx->need_close) {
-            if (_Py_WriteIndent(EXC_INDENT(ctx), f) < 0) {
-                return -1;
-            }
-            if (PyFile_WriteString(
-                    "+------------------------------------\n", f) < 0) {
-                return -1;
-            }
-            ctx->need_close = false;
-        }
-        ctx->exception_group_depth -= 1;
-    }
-
-    if (ctx->exception_group_depth == 1) {
-        ctx->exception_group_depth -= 1;
-    }
-    return 0;
-}
-
 static int
 print_exception_recursive(struct exception_print_context *ctx, PyObject *value)
 {
@@ -1474,12 +1034,7 @@ print_exception_recursive(struct exception_print_context *ctx, PyObject *value)
             goto error;
         }
     }
-    if (!_PyBaseExceptionGroup_Check(value)) {
-        if (print_exception(ctx, value) < 0) {
-            goto error;
-        }
-    }
-    else if (print_exception_group(ctx, value) < 0) {
+    if (print_exception(ctx, value) < 0) {
         goto error;
     }
     assert(!PyErr_Occurred());
@@ -1491,12 +1046,10 @@ print_exception_recursive(struct exception_print_context *ctx, PyObject *value)
     return -1;
 }
 
-#define PyErr_MAX_GROUP_WIDTH 15
-#define PyErr_MAX_GROUP_DEPTH 10
-
 void
 _PyErr_Display(PyObject *file, PyObject *unused, PyObject *value, PyObject *tb)
 {
+    assert(value != NULL);
     assert(file != NULL && file != Py_None);
     if (PyExceptionInstance_Check(value)
         && tb != NULL && PyTraceBack_Check(tb)) {
@@ -1511,12 +1064,42 @@ _PyErr_Display(PyObject *file, PyObject *unused, PyObject *value, PyObject *tb)
         }
     }
 
+    int unhandled_keyboard_interrupt = _PyRuntime.signals.unhandled_keyboard_interrupt;
+
+    // Try first with the stdlib traceback module
+    PyObject *traceback_module = PyImport_ImportModule("traceback");
+
+    if (traceback_module == NULL) {
+        goto fallback;
+    }
+
+    PyObject *print_exception_fn = PyObject_GetAttrString(traceback_module, "_print_exception_bltin");
+
+    if (print_exception_fn == NULL || !PyCallable_Check(print_exception_fn)) {
+        Py_DECREF(traceback_module);
+        goto fallback;
+    }
+
+    PyObject* result = PyObject_CallOneArg(print_exception_fn, value);
+
+    Py_DECREF(traceback_module);
+    Py_XDECREF(print_exception_fn);
+    if (result) {
+        Py_DECREF(result);
+        _PyRuntime.signals.unhandled_keyboard_interrupt = unhandled_keyboard_interrupt;
+        return;
+    }
+fallback:
+    _PyRuntime.signals.unhandled_keyboard_interrupt = unhandled_keyboard_interrupt;
+#ifdef Py_DEBUG
+     if (PyErr_Occurred()) {
+         PyErr_FormatUnraisable(
+             "Exception ignored in the internal traceback machinery");
+     }
+#endif
+    PyErr_Clear();
     struct exception_print_context ctx;
     ctx.file = file;
-    ctx.exception_group_depth = 0;
-    ctx.need_close = false;
-    ctx.max_group_width = PyErr_MAX_GROUP_WIDTH;
-    ctx.max_group_depth = PyErr_MAX_GROUP_DEPTH;
 
     /* We choose to ignore seen being possibly NULL, and report
        at least the main exception (it could be a MemoryError).
@@ -1533,14 +1116,10 @@ _PyErr_Display(PyObject *file, PyObject *unused, PyObject *value, PyObject *tb)
     Py_XDECREF(ctx.seen);
 
     /* Call file.flush() */
-    PyObject *res = _PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
-    if (!res) {
+    if (_PyFile_Flush(file) < 0) {
         /* Silently ignore file.flush() error */
         PyErr_Clear();
     }
-    else {
-        Py_DECREF(res);
-    }
 }
 
 void
@@ -1571,9 +1150,10 @@ void PyErr_DisplayException(PyObject *exc)
     PyErr_Display(NULL, exc, NULL);
 }
 
-PyObject *
-PyRun_StringFlags(const char *str, int start, PyObject *globals,
-                  PyObject *locals, PyCompilerFlags *flags)
+static PyObject *
+_PyRun_StringFlagsWithName(const char *str, PyObject* name, int start,
+                           PyObject *globals, PyObject *locals, PyCompilerFlags *flags,
+                           int generate_new_source)
 {
     PyObject *ret = NULL;
     mod_ty mod;
@@ -1583,17 +1163,36 @@ PyRun_StringFlags(const char *str, int start, PyObject *globals,
     if (arena == NULL)
         return NULL;
 
+    PyObject* source = NULL;
     _Py_DECLARE_STR(anon_string, "<string>");
-    mod = _PyParser_ASTFromString(
-            str, &_Py_STR(anon_string), start, flags, arena);
 
-    if (mod != NULL)
-        ret = run_mod(mod, &_Py_STR(anon_string), globals, locals, flags, arena);
+    if (name) {
+        source = PyUnicode_FromString(str);
+        if (!source) {
+            PyErr_Clear();
+        }
+    } else {
+        name = &_Py_STR(anon_string);
+    }
+
+    mod = _PyParser_ASTFromString(str, name, start, flags, arena);
+
+   if (mod != NULL) {
+        ret = run_mod(mod, name, globals, locals, flags, arena, source, generate_new_source);
+    }
+    Py_XDECREF(source);
     _PyArena_Free(arena);
     return ret;
 }
 
 
+PyObject *
+PyRun_StringFlags(const char *str, int start, PyObject *globals,
+                     PyObject *locals, PyCompilerFlags *flags) {
+
+    return _PyRun_StringFlagsWithName(str, NULL, start, globals, locals, flags, 0);
+}
+
 static PyObject *
 pyrun_file(FILE *fp, PyObject *filename, int start, PyObject *globals,
            PyObject *locals, int closeit, PyCompilerFlags *flags)
@@ -1613,7 +1212,7 @@ pyrun_file(FILE *fp, PyObject *filename, int start, PyObject *globals,
 
     PyObject *ret;
     if (mod != NULL) {
-        ret = run_mod(mod, filename, globals, locals, flags, arena);
+        ret = run_mod(mod, filename, globals, locals, flags, arena, NULL, 0);
     }
     else {
         ret = NULL;
@@ -1645,11 +1244,7 @@ flush_io_stream(PyThreadState *tstate, PyObject *name)
 {
     PyObject *f = _PySys_GetAttr(tstate, name);
     if (f != NULL) {
-        PyObject *r = _PyObject_CallMethodNoArgs(f, &_Py_ID(flush));
-        if (r) {
-            Py_DECREF(r);
-        }
-        else {
+        if (_PyFile_Flush(f) < 0) {
             PyErr_Clear();
         }
     }
@@ -1683,13 +1278,17 @@ run_eval_code_obj(PyThreadState *tstate, PyCodeObject *co, PyObject *globals, Py
     _PyRuntime.signals.unhandled_keyboard_interrupt = 0;
 
     /* Set globals['__builtins__'] if it doesn't exist */
-    if (globals != NULL && _PyDict_GetItemStringWithError(globals, "__builtins__") == NULL) {
-        if (PyErr_Occurred() ||
-            PyDict_SetItemString(globals, "__builtins__",
-                                 tstate->interp->builtins) < 0)
-        {
+    if (globals != NULL) {
+        int has_builtins = PyDict_ContainsString(globals, "__builtins__");
+        if (has_builtins < 0) {
             return NULL;
         }
+        if (!has_builtins) {
+            if (PyDict_SetItemString(globals, "__builtins__",
+                                     tstate->interp->builtins) < 0) {
+                return NULL;
+            }
+        }
     }
 
     v = PyEval_EvalCode((PyObject*)co, globals, locals);
@@ -1701,12 +1300,76 @@ run_eval_code_obj(PyThreadState *tstate, PyCodeObject *co, PyObject *globals, Py
 
 static PyObject *
 run_mod(mod_ty mod, PyObject *filename, PyObject *globals, PyObject *locals,
-            PyCompilerFlags *flags, PyArena *arena)
+            PyCompilerFlags *flags, PyArena *arena, PyObject* interactive_src,
+            int generate_new_source)
 {
     PyThreadState *tstate = _PyThreadState_GET();
-    PyCodeObject *co = _PyAST_Compile(mod, filename, flags, -1, arena);
-    if (co == NULL)
+    PyObject* interactive_filename = filename;
+    if (interactive_src) {
+        PyInterpreterState *interp = tstate->interp;
+        if (generate_new_source) {
+            interactive_filename = PyUnicode_FromFormat(
+                "%U-%d", filename, interp->_interactive_src_count++);
+        } else {
+            Py_INCREF(interactive_filename);
+        }
+        if (interactive_filename == NULL) {
+            return NULL;
+        }
+    }
+
+    PyCodeObject *co = _PyAST_Compile(mod, interactive_filename, flags, -1, arena);
+    if (co == NULL) {
+        if (interactive_src) {
+            Py_DECREF(interactive_filename);
+        }
         return NULL;
+    }
+
+    if (interactive_src) {
+        PyObject *linecache_module = PyImport_ImportModule("linecache");
+
+        if (linecache_module == NULL) {
+            Py_DECREF(co);
+            Py_DECREF(interactive_filename);
+            return NULL;
+        }
+
+        PyObject *print_tb_func = PyObject_GetAttrString(linecache_module, "_register_code");
+
+        if (print_tb_func == NULL) {
+            Py_DECREF(co);
+            Py_DECREF(interactive_filename);
+            Py_DECREF(linecache_module);
+            return NULL;
+        }
+
+        if (!PyCallable_Check(print_tb_func)) {
+            Py_DECREF(co);
+            Py_DECREF(interactive_filename);
+            Py_DECREF(linecache_module);
+            Py_DECREF(print_tb_func);
+            PyErr_SetString(PyExc_ValueError, "linecache._register_code is not callable");
+            return NULL;
+        }
+
+        PyObject* result = PyObject_CallFunction(
+            print_tb_func, "OOO",
+            interactive_filename,
+            interactive_src,
+            filename
+        );
+
+        Py_DECREF(interactive_filename);
+
+        Py_DECREF(linecache_module);
+        Py_XDECREF(print_tb_func);
+        Py_XDECREF(result);
+        if (!result) {
+            Py_DECREF(co);
+            return NULL;
+        }
+    }
 
     if (_PySys_Audit(tstate, "exec", "O", co) < 0) {
         Py_DECREF(co);
@@ -1777,6 +1440,11 @@ Py_CompileStringObject(const char *str, PyObject *filename, int start,
         return NULL;
     }
     if (flags && (flags->cf_flags & PyCF_ONLY_AST)) {
+        if ((flags->cf_flags & PyCF_OPTIMIZED_AST) == PyCF_OPTIMIZED_AST) {
+            if (_PyCompile_AstOptimize(mod, filename, flags, optimize, arena) < 0) {
+                return NULL;
+            }
+        }
         PyObject *result = PyAST_mod2obj(mod);
         _PyArena_Free(arena);
         return result;
@@ -1987,7 +1655,3 @@ PyRun_InteractiveLoop(FILE *f, const char *p)
 {
     return PyRun_InteractiveLoopFlags(f, p, NULL);
 }
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Python/pytime.c b/Python/pytime.c
index acd1842056af43..77cb95f8feb179 100644
--- a/Python/pytime.c
+++ b/Python/pytime.c
@@ -1,4 +1,10 @@
 #include "Python.h"
+#include "pycore_time.h"          // _PyTime_t
+
+#include <time.h>                 // gmtime_r()
+#ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>           // gettimeofday()
+#endif
 #ifdef MS_WINDOWS
 #  include <winsock2.h>           // struct timeval
 #endif
@@ -49,6 +55,43 @@
 #endif
 
 
+static _PyTime_t
+_PyTime_GCD(_PyTime_t x, _PyTime_t y)
+{
+    // Euclidean algorithm
+    assert(x >= 1);
+    assert(y >= 1);
+    while (y != 0) {
+        _PyTime_t tmp = y;
+        y = x % y;
+        x = tmp;
+    }
+    assert(x >= 1);
+    return x;
+}
+
+
+int
+_PyTimeFraction_Set(_PyTimeFraction *frac, _PyTime_t numer, _PyTime_t denom)
+{
+    if (numer < 1 || denom < 1) {
+        return -1;
+    }
+
+    _PyTime_t gcd = _PyTime_GCD(numer, denom);
+    frac->numer = numer / gcd;
+    frac->denom = denom / gcd;
+    return 0;
+}
+
+
+double
+_PyTimeFraction_Resolution(const _PyTimeFraction *frac)
+{
+    return (double)frac->numer / (double)frac->denom / 1e9;
+}
+
+
 static void
 pytime_time_t_overflow(void)
 {
@@ -146,11 +189,17 @@ _PyTime_Mul(_PyTime_t t, _PyTime_t k)
 }
 
 
-
-
 _PyTime_t
-_PyTime_MulDiv(_PyTime_t ticks, _PyTime_t mul, _PyTime_t div)
+_PyTimeFraction_Mul(_PyTime_t ticks, const _PyTimeFraction *frac)
 {
+    const _PyTime_t mul = frac->numer;
+    const _PyTime_t div = frac->denom;
+
+    if (div == 1) {
+        // Fast-path taken by mach_absolute_time() with 1/1 time base.
+        return _PyTime_Mul(ticks, mul);
+    }
+
     /* Compute (ticks * mul / div) in two parts to reduce the risk of integer
        overflow: compute the integer part, and then the remaining part.
 
@@ -464,7 +513,7 @@ _PyTime_FromNanosecondsObject(_PyTime_t *tp, PyObject *obj)
 
 #ifdef HAVE_CLOCK_GETTIME
 static int
-pytime_fromtimespec(_PyTime_t *tp, struct timespec *ts, int raise_exc)
+pytime_fromtimespec(_PyTime_t *tp, const struct timespec *ts, int raise_exc)
 {
     _PyTime_t t, tv_nsec;
 
@@ -487,7 +536,7 @@ pytime_fromtimespec(_PyTime_t *tp, struct timespec *ts, int raise_exc)
 }
 
 int
-_PyTime_FromTimespec(_PyTime_t *tp, struct timespec *ts)
+_PyTime_FromTimespec(_PyTime_t *tp, const struct timespec *ts)
 {
     return pytime_fromtimespec(tp, ts, 1);
 }
@@ -629,6 +678,16 @@ _PyTime_AsNanosecondsObject(_PyTime_t t)
     return PyLong_FromLongLong((long long)ns);
 }
 
+_PyTime_t
+_PyTime_FromSecondsDouble(double seconds, _PyTime_round_t round)
+{
+    _PyTime_t tp;
+    if(pytime_from_double(&tp, seconds, round, SEC_TO_NS) < 0) {
+        return -1;
+    }
+    return tp;
+}
+
 
 static _PyTime_t
 pytime_divide_round_up(const _PyTime_t t, const _PyTime_t k)
@@ -969,7 +1028,7 @@ py_get_system_clock(_PyTime_t *tp, _Py_clock_info_t *info, int raise_exc)
     }
 
 #if defined(HAVE_CLOCK_GETTIME_RUNTIME) && defined(HAVE_CLOCK_GETTIME)
-    } /* end of availibity block */
+    } /* end of availability block */
 #endif
 
 #endif   /* !HAVE_CLOCK_GETTIME */
@@ -1000,51 +1059,34 @@ _PyTime_GetSystemClockWithInfo(_PyTime_t *t, _Py_clock_info_t *info)
 
 #ifdef __APPLE__
 static int
-py_mach_timebase_info(_PyTime_t *pnumer, _PyTime_t *pdenom, int raise)
+py_mach_timebase_info(_PyTimeFraction *base, int raise)
 {
-    static mach_timebase_info_data_t timebase;
-    /* According to the Technical Q&A QA1398, mach_timebase_info() cannot
-       fail: https://developer.apple.com/library/mac/#qa/qa1398/ */
+    mach_timebase_info_data_t timebase;
+    // According to the Technical Q&A QA1398, mach_timebase_info() cannot
+    // fail: https://developer.apple.com/library/mac/#qa/qa1398/
     (void)mach_timebase_info(&timebase);
 
-    /* Sanity check: should never occur in practice */
-    if (timebase.numer < 1 || timebase.denom < 1) {
+    // Check that timebase.numer and timebase.denom can be casted to
+    // _PyTime_t. In practice, timebase uses uint32_t, so casting cannot
+    // overflow. At the end, only make sure that the type is uint32_t
+    // (_PyTime_t is 64-bit long).
+    Py_BUILD_ASSERT(sizeof(timebase.numer) <= sizeof(_PyTime_t));
+    Py_BUILD_ASSERT(sizeof(timebase.denom) <= sizeof(_PyTime_t));
+    _PyTime_t numer = (_PyTime_t)timebase.numer;
+    _PyTime_t denom = (_PyTime_t)timebase.denom;
+
+    // Known time bases:
+    //
+    // * (1, 1) on Intel: 1 ns
+    // * (1000000000, 33333335) on PowerPC: ~30 ns
+    // * (1000000000, 25000000) on PowerPC: 40 ns
+    if (_PyTimeFraction_Set(base, numer, denom) < 0) {
         if (raise) {
             PyErr_SetString(PyExc_RuntimeError,
                             "invalid mach_timebase_info");
         }
         return -1;
     }
-
-    /* Check that timebase.numer and timebase.denom can be casted to
-       _PyTime_t. In practice, timebase uses uint32_t, so casting cannot
-       overflow. At the end, only make sure that the type is uint32_t
-       (_PyTime_t is 64-bit long). */
-    static_assert(sizeof(timebase.numer) <= sizeof(_PyTime_t),
-                  "timebase.numer is larger than _PyTime_t");
-    static_assert(sizeof(timebase.denom) <= sizeof(_PyTime_t),
-                  "timebase.denom is larger than _PyTime_t");
-
-    /* Make sure that _PyTime_MulDiv(ticks, timebase_numer, timebase_denom)
-       cannot overflow.
-
-       Known time bases:
-
-       * (1, 1) on Intel
-       * (1000000000, 33333335) or (1000000000, 25000000) on PowerPC
-
-       None of these time bases can overflow with 64-bit _PyTime_t, but
-       check for overflow, just in case. */
-    if ((_PyTime_t)timebase.numer > _PyTime_MAX / (_PyTime_t)timebase.denom) {
-        if (raise) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "mach_timebase_info is too large");
-        }
-        return -1;
-    }
-
-    *pnumer = (_PyTime_t)timebase.numer;
-    *pdenom = (_PyTime_t)timebase.denom;
     return 0;
 }
 #endif
@@ -1093,17 +1135,16 @@ py_get_monotonic_clock(_PyTime_t *tp, _Py_clock_info_t *info, int raise_exc)
     }
 
 #elif defined(__APPLE__)
-    static _PyTime_t timebase_numer = 0;
-    static _PyTime_t timebase_denom = 0;
-    if (timebase_denom == 0) {
-        if (py_mach_timebase_info(&timebase_numer, &timebase_denom, raise_exc) < 0) {
+    static _PyTimeFraction base = {0, 0};
+    if (base.denom == 0) {
+        if (py_mach_timebase_info(&base, raise_exc) < 0) {
             return -1;
         }
     }
 
     if (info) {
         info->implementation = "mach_absolute_time()";
-        info->resolution = (double)timebase_numer / (double)timebase_denom * 1e-9;
+        info->resolution = _PyTimeFraction_Resolution(&base);
         info->monotonic = 1;
         info->adjustable = 0;
     }
@@ -1113,7 +1154,7 @@ py_get_monotonic_clock(_PyTime_t *tp, _Py_clock_info_t *info, int raise_exc)
     assert(uticks <= (uint64_t)_PyTime_MAX);
     _PyTime_t ticks = (_PyTime_t)uticks;
 
-    _PyTime_t ns = _PyTime_MulDiv(ticks, timebase_numer, timebase_denom);
+    _PyTime_t ns = _PyTimeFraction_Mul(ticks, &base);
     *tp = pytime_from_nanoseconds(ns);
 
 #elif defined(__hpux)
@@ -1197,7 +1238,7 @@ _PyTime_GetMonotonicClockWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
 
 #ifdef MS_WINDOWS
 static int
-py_win_perf_counter_frequency(LONGLONG *pfrequency, int raise)
+py_win_perf_counter_frequency(_PyTimeFraction *base, int raise)
 {
     LONGLONG frequency;
 
@@ -1209,25 +1250,20 @@ py_win_perf_counter_frequency(LONGLONG *pfrequency, int raise)
     // Since Windows XP, frequency cannot be zero.
     assert(frequency >= 1);
 
-    /* Make also sure that (ticks * SEC_TO_NS) cannot overflow in
-       _PyTime_MulDiv(), with ticks < frequency.
-
-       Known QueryPerformanceFrequency() values:
-
-       * 10,000,000 (10 MHz): 100 ns resolution
-       * 3,579,545 Hz (3.6 MHz): 279 ns resolution
+    Py_BUILD_ASSERT(sizeof(_PyTime_t) == sizeof(frequency));
+    _PyTime_t denom = (_PyTime_t)frequency;
 
-       None of these frequencies can overflow with 64-bit _PyTime_t, but
-       check for integer overflow just in case. */
-    if (frequency > _PyTime_MAX / SEC_TO_NS) {
+    // Known QueryPerformanceFrequency() values:
+    //
+    // * 10,000,000 (10 MHz): 100 ns resolution
+    // * 3,579,545 Hz (3.6 MHz): 279 ns resolution
+    if (_PyTimeFraction_Set(base, SEC_TO_NS, denom) < 0) {
         if (raise) {
-            PyErr_SetString(PyExc_OverflowError,
-                            "QueryPerformanceFrequency is too large");
+            PyErr_SetString(PyExc_RuntimeError,
+                            "invalid QueryPerformanceFrequency");
         }
         return -1;
     }
-
-    *pfrequency = frequency;
     return 0;
 }
 
@@ -1237,16 +1273,16 @@ py_get_win_perf_counter(_PyTime_t *tp, _Py_clock_info_t *info, int raise_exc)
 {
     assert(info == NULL || raise_exc);
 
-    static LONGLONG frequency = 0;
-    if (frequency == 0) {
-        if (py_win_perf_counter_frequency(&frequency, raise_exc) < 0) {
+    static _PyTimeFraction base = {0, 0};
+    if (base.denom == 0) {
+        if (py_win_perf_counter_frequency(&base, raise_exc) < 0) {
             return -1;
         }
     }
 
     if (info) {
         info->implementation = "QueryPerformanceCounter()";
-        info->resolution = 1.0 / (double)frequency;
+        info->resolution = _PyTimeFraction_Resolution(&base);
         info->monotonic = 1;
         info->adjustable = 0;
     }
@@ -1262,7 +1298,7 @@ py_get_win_perf_counter(_PyTime_t *tp, _Py_clock_info_t *info, int raise_exc)
                   "LONGLONG is larger than _PyTime_t");
     ticks = (_PyTime_t)ticksll;
 
-    _PyTime_t ns = _PyTime_MulDiv(ticks, SEC_TO_NS, (_PyTime_t)frequency);
+    _PyTime_t ns = _PyTimeFraction_Mul(ticks, &base);
     *tp = pytime_from_nanoseconds(ns);
     return 0;
 }
diff --git a/Python/specialize.c b/Python/specialize.c
index f1684913b1bc30..ba704cbbb464d7 100644
--- a/Python/specialize.c
+++ b/Python/specialize.c
@@ -1,24 +1,30 @@
 #include "Python.h"
+
+#include "opcode.h"
+
 #include "pycore_code.h"
-#include "pycore_dict.h"
+#include "pycore_descrobject.h"   // _PyMethodWrapper_Type
+#include "pycore_dict.h"          // DICT_KEYS_UNICODE
 #include "pycore_function.h"      // _PyFunction_GetVersionForCurrentState()
-#include "pycore_global_strings.h"  // _Py_ID()
-#include "pycore_long.h"
+#include "pycore_long.h"          // _PyLong_IsNonNegativeCompact()
 #include "pycore_moduleobject.h"
 #include "pycore_object.h"
-#include "pycore_opcode.h"        // _PyOpcode_Caches
-#include "structmember.h"         // struct PyMemberDef, T_OFFSET_EX
-#include "pycore_descrobject.h"
+#include "pycore_opcode_metadata.h" // _PyOpcode_Caches
+#include "pycore_opcode_utils.h"  // RESUME_AT_FUNC_START
+#include "pycore_pylifecycle.h"   // _PyOS_URandomNonblock()
+#include "pycore_runtime.h"       // _Py_ID()
 
 #include <stdlib.h> // rand()
 
+
 /* For guidance on adding or extending families of instructions see
  * ./adaptive.md
  */
 
 #ifdef Py_STATS
-PyStats _py_stats_struct = { 0 };
-PyStats *_py_stats = NULL;
+GCStats _py_gc_stats[NUM_GENERATIONS] = { 0 };
+static PyStats _Py_stats_struct = { .gc_stats = _py_gc_stats };
+PyStats *_Py_stats = NULL;
 
 #define ADD_STAT_TO_DICT(res, field) \
     do { \
@@ -78,7 +84,7 @@ add_stat_dict(
     int opcode,
     const char *name) {
 
-    SpecializationStats *stats = &_py_stats_struct.opcode_stats[opcode].specialization;
+    SpecializationStats *stats = &_Py_stats_struct.opcode_stats[opcode].specialization;
     PyObject *d = stats_to_dict(stats);
     if (d == NULL) {
         return -1;
@@ -88,7 +94,6 @@ add_stat_dict(
     return err;
 }
 
-#ifdef Py_STATS
 PyObject*
 _Py_GetSpecializationStats(void) {
     PyObject *stats = PyDict_New();
@@ -107,18 +112,19 @@ _Py_GetSpecializationStats(void) {
     err += add_stat_dict(stats, COMPARE_OP, "compare_op");
     err += add_stat_dict(stats, UNPACK_SEQUENCE, "unpack_sequence");
     err += add_stat_dict(stats, FOR_ITER, "for_iter");
+    err += add_stat_dict(stats, TO_BOOL, "to_bool");
+    err += add_stat_dict(stats, SEND, "send");
     if (err < 0) {
         Py_DECREF(stats);
         return NULL;
     }
     return stats;
 }
-#endif
 
 
 #define PRINT_STAT(i, field) \
     if (stats[i].field) { \
-        fprintf(out, "    opcode[%d]." #field " : %" PRIu64 "\n", i, stats[i].field); \
+        fprintf(out, "    opcode[%s]." #field " : %" PRIu64 "\n", _PyOpcode_OpName[i], stats[i].field); \
     }
 
 static void
@@ -126,13 +132,11 @@ print_spec_stats(FILE *out, OpcodeStats *stats)
 {
     /* Mark some opcodes as specializable for stats,
      * even though we don't specialize them yet. */
-    fprintf(out, "opcode[%d].specializable : 1\n", BINARY_SLICE);
-    fprintf(out, "opcode[%d].specializable : 1\n", COMPARE_OP);
-    fprintf(out, "opcode[%d].specializable : 1\n", STORE_SLICE);
-    fprintf(out, "opcode[%d].specializable : 1\n", SEND);
+    fprintf(out, "opcode[BINARY_SLICE].specializable : 1\n");
+    fprintf(out, "opcode[STORE_SLICE].specializable : 1\n");
     for (int i = 0; i < 256; i++) {
-        if (_PyOpcode_Caches[i]) {
-            fprintf(out, "opcode[%d].specializable : 1\n", i);
+        if (_PyOpcode_Caches[i] && i != JUMP_BACKWARD) {
+            fprintf(out, "opcode[%s].specializable : 1\n", _PyOpcode_OpName[i]);
         }
         PRINT_STAT(i, specialization.success);
         PRINT_STAT(i, specialization.failure);
@@ -144,14 +148,14 @@ print_spec_stats(FILE *out, OpcodeStats *stats)
         for (int j = 0; j < SPECIALIZATION_FAILURE_KINDS; j++) {
             uint64_t val = stats[i].specialization.failure_kinds[j];
             if (val) {
-                fprintf(out, "    opcode[%d].specialization.failure_kinds[%d] : %"
-                    PRIu64 "\n", i, j, val);
+                fprintf(out, "    opcode[%s].specialization.failure_kinds[%d] : %"
+                    PRIu64 "\n", _PyOpcode_OpName[i], j, val);
             }
         }
         for (int j = 0; j < 256; j++) {
             if (stats[i].pair_count[j]) {
-                fprintf(out, "opcode[%d].pair_count[%d] : %" PRIu64 "\n",
-                        i, j, stats[i].pair_count[j]);
+                fprintf(out, "opcode[%s].pair_count[%s] : %" PRIu64 "\n",
+                        _PyOpcode_OpName[i], _PyOpcode_OpName[j], stats[i].pair_count[j]);
             }
         }
     }
@@ -190,6 +194,7 @@ print_object_stats(FILE *out, ObjectStats *stats)
     fprintf(out, "Object materialize dict (new key): %" PRIu64 "\n", stats->dict_materialized_new_key);
     fprintf(out, "Object materialize dict (too big): %" PRIu64 "\n", stats->dict_materialized_too_big);
     fprintf(out, "Object materialize dict (str subclass): %" PRIu64 "\n", stats->dict_materialized_str_subclass);
+    fprintf(out, "Object dematerialize dict: %" PRIu64 "\n", stats->dict_dematerialized);
     fprintf(out, "Object method cache hits: %" PRIu64 "\n", stats->type_cache_hits);
     fprintf(out, "Object method cache misses: %" PRIu64 "\n", stats->type_cache_misses);
     fprintf(out, "Object method cache collisions: %" PRIu64 "\n", stats->type_cache_collisions);
@@ -198,21 +203,129 @@ print_object_stats(FILE *out, ObjectStats *stats)
 }
 
 static void
-print_stats(FILE *out, PyStats *stats) {
+print_gc_stats(FILE *out, GCStats *stats)
+{
+    for (int i = 0; i < NUM_GENERATIONS; i++) {
+        fprintf(out, "GC[%d] collections: %" PRIu64 "\n", i, stats[i].collections);
+        fprintf(out, "GC[%d] object visits: %" PRIu64 "\n", i, stats[i].object_visits);
+        fprintf(out, "GC[%d] objects collected: %" PRIu64 "\n", i, stats[i].objects_collected);
+    }
+}
+
+static void
+print_histogram(FILE *out, const char *name, uint64_t hist[_Py_UOP_HIST_SIZE])
+{
+    for (int i = 0; i < _Py_UOP_HIST_SIZE; i++) {
+        fprintf(out, "%s[%" PRIu64"]: %" PRIu64 "\n", name, (uint64_t)1 << i, hist[i]);
+    }
+}
+
+static void
+print_optimization_stats(FILE *out, OptimizationStats *stats)
+{
+    fprintf(out, "Optimization attempts: %" PRIu64 "\n", stats->attempts);
+    fprintf(out, "Optimization traces created: %" PRIu64 "\n", stats->traces_created);
+    fprintf(out, "Optimization traces executed: %" PRIu64 "\n", stats->traces_executed);
+    fprintf(out, "Optimization uops executed: %" PRIu64 "\n", stats->uops_executed);
+    fprintf(out, "Optimization trace stack overflow: %" PRIu64 "\n", stats->trace_stack_overflow);
+    fprintf(out, "Optimization trace stack underflow: %" PRIu64 "\n", stats->trace_stack_underflow);
+    fprintf(out, "Optimization trace too long: %" PRIu64 "\n", stats->trace_too_long);
+    fprintf(out, "Optimization trace too short: %" PRIu64 "\n", stats->trace_too_short);
+    fprintf(out, "Optimization inner loop: %" PRIu64 "\n", stats->inner_loop);
+    fprintf(out, "Optimization recursive call: %" PRIu64 "\n", stats->recursive_call);
+
+    print_histogram(out, "Trace length", stats->trace_length_hist);
+    print_histogram(out, "Trace run length", stats->trace_run_length_hist);
+    print_histogram(out, "Optimized trace length", stats->optimized_trace_length_hist);
+
+    const char* const* names;
+    for (int i = 0; i < 512; i++) {
+        if (i < 256) {
+            names = _PyOpcode_OpName;
+        } else {
+            names = _PyOpcode_uop_name;
+        }
+        if (stats->opcode[i].execution_count) {
+            fprintf(out, "uops[%s].execution_count : %" PRIu64 "\n", names[i], stats->opcode[i].execution_count);
+        }
+        if (stats->opcode[i].miss) {
+            fprintf(out, "uops[%s].specialization.miss : %" PRIu64 "\n", names[i], stats->opcode[i].miss);
+        }
+    }
+
+    for (int i = 0; i < 256; i++) {
+        if (stats->unsupported_opcode[i]) {
+            fprintf(
+                out,
+                "unsupported_opcode[%s].count : %" PRIu64 "\n",
+                _PyOpcode_OpName[i],
+                stats->unsupported_opcode[i]
+            );
+        }
+    }
+}
+
+static void
+print_stats(FILE *out, PyStats *stats)
+{
     print_spec_stats(out, stats->opcode_stats);
     print_call_stats(out, &stats->call_stats);
     print_object_stats(out, &stats->object_stats);
+    print_gc_stats(out, stats->gc_stats);
+    print_optimization_stats(out, &stats->optimization_stats);
 }
 
 void
-_Py_StatsClear(void)
+_Py_StatsOn(void)
 {
-    _py_stats_struct = (PyStats) { 0 };
+    _Py_stats = &_Py_stats_struct;
 }
 
 void
+_Py_StatsOff(void)
+{
+    _Py_stats = NULL;
+}
+
+void
+_Py_StatsClear(void)
+{
+    memset(&_py_gc_stats, 0, sizeof(_py_gc_stats));
+    memset(&_Py_stats_struct, 0, sizeof(_Py_stats_struct));
+    _Py_stats_struct.gc_stats = _py_gc_stats;
+}
+
+static int
+mem_is_zero(unsigned char *ptr, size_t size)
+{
+    for (size_t i=0; i < size; i++) {
+        if (*ptr != 0) {
+            return 0;
+        }
+        ptr++;
+    }
+    return 1;
+}
+
+int
 _Py_PrintSpecializationStats(int to_file)
 {
+    PyStats *stats = &_Py_stats_struct;
+#define MEM_IS_ZERO(DATA) mem_is_zero((unsigned char*)DATA, sizeof(*(DATA)))
+    int is_zero = (
+        MEM_IS_ZERO(stats->gc_stats)  // is a pointer
+        && MEM_IS_ZERO(&stats->opcode_stats)
+        && MEM_IS_ZERO(&stats->call_stats)
+        && MEM_IS_ZERO(&stats->object_stats)
+    );
+#undef MEM_IS_ZERO
+    if (is_zero) {
+        // gh-108753: -X pystats command line was used, but then _stats_off()
+        // and _stats_clear() have been called: in this case, avoid printing
+        // useless "all zeros" statistics.
+        return 0;
+    }
+
     FILE *out = stderr;
     if (to_file) {
         /* Write to a file instead of stderr. */
@@ -228,8 +341,8 @@ _Py_PrintSpecializationStats(int to_file)
         char hex_name[41];
         _PyOS_URandomNonblock(rand, 20);
         for (int i = 0; i < 20; i++) {
-            hex_name[2*i] = "0123456789abcdef"[rand[i]&15];
-            hex_name[2*i+1] = "0123456789abcdef"[(rand[i]>>4)&15];
+            hex_name[2*i] = Py_hexdigits[rand[i]&15];
+            hex_name[2*i+1] = Py_hexdigits[(rand[i]>>4)&15];
         }
         hex_name[40] = '\0';
         char buf[64];
@@ -243,26 +356,25 @@ _Py_PrintSpecializationStats(int to_file)
     else {
         fprintf(out, "Specialization stats:\n");
     }
-    print_stats(out, &_py_stats_struct);
+    print_stats(out, stats);
     if (out != stderr) {
         fclose(out);
     }
+    return 1;
 }
 
-#ifdef Py_STATS
-
 #define SPECIALIZATION_FAIL(opcode, kind) \
 do { \
-    if (_py_stats) { \
-        _py_stats->opcode_stats[opcode].specialization.failure_kinds[kind]++; \
+    if (_Py_stats) { \
+        _Py_stats->opcode_stats[opcode].specialization.failure_kinds[kind]++; \
     } \
 } while (0)
 
-#endif
-#endif
+#endif  // Py_STATS
+
 
 #ifndef SPECIALIZATION_FAIL
-#define SPECIALIZATION_FAIL(opcode, kind) ((void)0)
+#  define SPECIALIZATION_FAIL(opcode, kind) ((void)0)
 #endif
 
 // Initialize warmup counters and insert superinstructions. This cannot fail.
@@ -273,31 +385,28 @@ _PyCode_Quicken(PyCodeObject *code)
     int opcode = 0;
     _Py_CODEUNIT *instructions = _PyCode_CODE(code);
     for (int i = 0; i < Py_SIZE(code); i++) {
-        int previous_opcode = opcode;
         opcode = _Py_GetBaseOpcode(code, i);
         assert(opcode < MIN_INSTRUMENTED_OPCODE);
         int caches = _PyOpcode_Caches[opcode];
         if (caches) {
-            instructions[i + 1].cache = adaptive_counter_warmup();
+            // The initial value depends on the opcode
+            int initial_value;
+            switch (opcode) {
+                case JUMP_BACKWARD:
+                    initial_value = 0;
+                    break;
+                case POP_JUMP_IF_FALSE:
+                case POP_JUMP_IF_TRUE:
+                case POP_JUMP_IF_NONE:
+                case POP_JUMP_IF_NOT_NONE:
+                    initial_value = 0x5555;  // Alternating 0, 1 bits
+                    break;
+                default:
+                    initial_value = adaptive_counter_warmup();
+                    break;
+            }
+            instructions[i + 1].cache = initial_value;
             i += caches;
-            continue;
-        }
-        switch (previous_opcode << 8 | opcode) {
-            case LOAD_CONST << 8 | LOAD_FAST:
-                instructions[i - 1].op.code = LOAD_CONST__LOAD_FAST;
-                break;
-            case LOAD_FAST << 8 | LOAD_CONST:
-                instructions[i - 1].op.code = LOAD_FAST__LOAD_CONST;
-                break;
-            case LOAD_FAST << 8 | LOAD_FAST:
-                instructions[i - 1].op.code = LOAD_FAST__LOAD_FAST;
-                break;
-            case STORE_FAST << 8 | LOAD_FAST:
-                instructions[i - 1].op.code = STORE_FAST__LOAD_FAST;
-                break;
-            case STORE_FAST << 8 | STORE_FAST:
-                instructions[i - 1].op.code = STORE_FAST__STORE_FAST;
-                break;
         }
     }
     #endif /* ENABLE_SPECIALIZATION */
@@ -361,7 +470,6 @@ _PyCode_Quicken(PyCodeObject *code)
 #define SPEC_FAIL_SUBSCR_ARRAY_SLICE 10
 #define SPEC_FAIL_SUBSCR_LIST_SLICE 11
 #define SPEC_FAIL_SUBSCR_TUPLE_SLICE 12
-#define SPEC_FAIL_SUBSCR_STRING_INT 13
 #define SPEC_FAIL_SUBSCR_STRING_SLICE 14
 #define SPEC_FAIL_SUBSCR_BUFFER_INT 15
 #define SPEC_FAIL_SUBSCR_BUFFER_SLICE 16
@@ -410,15 +518,15 @@ _PyCode_Quicken(PyCodeObject *code)
 #define SPEC_FAIL_CALL_METH_DESCR_VARARGS_KEYWORDS 18
 #define SPEC_FAIL_CALL_METH_DESCR_METHOD_FASTCALL_KEYWORDS 19
 #define SPEC_FAIL_CALL_BAD_CALL_FLAGS 20
-#define SPEC_FAIL_CALL_PYTHON_CLASS 21
+#define SPEC_FAIL_CALL_INIT_NOT_PYTHON 21
 #define SPEC_FAIL_CALL_PEP_523 22
 #define SPEC_FAIL_CALL_BOUND_METHOD 23
 #define SPEC_FAIL_CALL_STR 24
 #define SPEC_FAIL_CALL_CLASS_NO_VECTORCALL 25
 #define SPEC_FAIL_CALL_CLASS_MUTABLE 26
-#define SPEC_FAIL_CALL_KWNAMES 27
 #define SPEC_FAIL_CALL_METHOD_WRAPPER 28
 #define SPEC_FAIL_CALL_OPERATOR_WRAPPER 29
+#define SPEC_FAIL_CALL_INIT_NOT_SIMPLE 30
 
 /* COMPARE_OP */
 #define SPEC_FAIL_COMPARE_OP_DIFFERENT_TYPES 12
@@ -461,6 +569,18 @@ _PyCode_Quicken(PyCodeObject *code)
 #define SPEC_FAIL_UNPACK_SEQUENCE_ITERATOR 9
 #define SPEC_FAIL_UNPACK_SEQUENCE_SEQUENCE 10
 
+// TO_BOOL
+#define SPEC_FAIL_TO_BOOL_BYTEARRAY    9
+#define SPEC_FAIL_TO_BOOL_BYTES       10
+#define SPEC_FAIL_TO_BOOL_DICT        11
+#define SPEC_FAIL_TO_BOOL_FLOAT       12
+#define SPEC_FAIL_TO_BOOL_MAPPING     13
+#define SPEC_FAIL_TO_BOOL_MEMORY_VIEW 14
+#define SPEC_FAIL_TO_BOOL_NUMBER      15
+#define SPEC_FAIL_TO_BOOL_SEQUENCE    16
+#define SPEC_FAIL_TO_BOOL_SET         17
+#define SPEC_FAIL_TO_BOOL_TUPLE       18
+
 static int function_kind(PyCodeObject *code);
 static bool function_check_args(PyObject *o, int expected_argcount, int opcode);
 static uint32_t function_get_version(PyObject *o, int opcode);
@@ -622,7 +742,7 @@ analyze_descriptor(PyTypeObject *type, PyObject *name, PyObject **descr, int sto
         if (desc_cls == &PyMemberDescr_Type) {
             PyMemberDescrObject *member = (PyMemberDescrObject *)descriptor;
             struct PyMemberDef *dmem = member->d_member;
-            if (dmem->type == T_OBJECT_EX) {
+            if (dmem->type == Py_T_OBJECT_EX || dmem->type == _Py_T_OBJECT) {
                 return OBJECT_SLOT;
             }
             return OTHER_SLOT;
@@ -671,8 +791,10 @@ specialize_dict_access(
         return 0;
     }
     _PyAttrCache *cache = (_PyAttrCache *)(instr + 1);
-    PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
-    if (_PyDictOrValues_IsValues(dorv)) {
+    PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
+    if (_PyDictOrValues_IsValues(*dorv) ||
+        _PyObject_MakeInstanceAttributesFromDict(owner, dorv))
+    {
         // Virtual dictionary
         PyDictKeysObject *keys = ((PyHeapTypeObject *)type)->ht_cached_keys;
         assert(PyUnicode_CheckExact(name));
@@ -690,12 +812,16 @@ specialize_dict_access(
         instr->op.code = values_op;
     }
     else {
-        PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(dorv);
+        PyDictObject *dict = (PyDictObject *)_PyDictOrValues_GetDict(*dorv);
         if (dict == NULL || !PyDict_CheckExact(dict)) {
             SPECIALIZATION_FAIL(base_op, SPEC_FAIL_NO_DICT);
             return 0;
         }
         // We found an instance with a __dict__.
+        if (dict->ma_values) {
+            SPECIALIZATION_FAIL(base_op, SPEC_FAIL_ATTR_NON_STRING_OR_SPLIT);
+            return 0;
+        }
         Py_ssize_t index =
             _PyDict_LookupIndex(dict, name);
         if (index != (uint16_t)index) {
@@ -712,8 +838,8 @@ specialize_dict_access(
     return 1;
 }
 
-static int specialize_attr_loadmethod(PyObject* owner, _Py_CODEUNIT* instr, PyObject* name,
-    PyObject* descr, DescriptorClassification kind);
+static int specialize_attr_loadclassattr(PyObject* owner, _Py_CODEUNIT* instr, PyObject* name,
+    PyObject* descr, DescriptorClassification kind, bool is_method);
 static int specialize_class_load_attr(PyObject* owner, _Py_CODEUNIT* instr, PyObject* name);
 
 void
@@ -754,7 +880,7 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
         {
             int oparg = instr->op.arg;
             if (oparg & 1) {
-                if (specialize_attr_loadmethod(owner, instr, name, descr, kind)) {
+                if (specialize_attr_loadclassattr(owner, instr, name, descr, kind, true)) {
                     goto success;
                 }
             }
@@ -779,6 +905,10 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
             if (!function_check_args(fget, 1, LOAD_ATTR)) {
                 goto fail;
             }
+            if (instr->op.arg & 1) {
+                SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_METHOD);
+                goto fail;
+            }
             uint32_t version = function_get_version(fget, LOAD_ATTR);
             if (version == 0) {
                 goto fail;
@@ -804,7 +934,7 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
                 SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_EXPECTED_ERROR);
                 goto fail;
             }
-            if (dmem->flags & PY_AUDIT_READ) {
+            if (dmem->flags & Py_AUDIT_READ) {
                 SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_AUDITED_SLOT);
                 goto fail;
             }
@@ -812,7 +942,7 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
                 SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_OUT_OF_RANGE);
                 goto fail;
             }
-            assert(dmem->type == T_OBJECT_EX);
+            assert(dmem->type == Py_T_OBJECT_EX || dmem->type == _Py_T_OBJECT);
             assert(offset > 0);
             cache->index = (uint16_t)offset;
             write_u32(cache->version, type->tp_version_tag);
@@ -845,6 +975,10 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
             if (!function_check_args(descr, 2, LOAD_ATTR)) {
                 goto fail;
             }
+            if (instr->op.arg & 1) {
+                SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_METHOD);
+                goto fail;
+            }
             uint32_t version = function_get_version(descr, LOAD_ATTR);
             if (version == 0) {
                 goto fail;
@@ -873,10 +1007,14 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
                                 SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
             goto fail;
         case NON_DESCRIPTOR:
-            SPECIALIZATION_FAIL(LOAD_ATTR,
-                                (type->tp_flags & Py_TPFLAGS_MANAGED_DICT) ?
-                                SPEC_FAIL_ATTR_CLASS_ATTR_SIMPLE :
-                                SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
+            if ((instr->op.arg & 1) == 0) {
+                if (specialize_attr_loadclassattr(owner, instr, name, descr, kind, false)) {
+                    goto success;
+                }
+            }
+            else {
+                SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_CLASS_ATTR_SIMPLE);
+            }
             goto fail;
         case ABSENT:
             if (specialize_dict_access(owner, instr, type, kind, name, LOAD_ATTR,
@@ -936,7 +1074,7 @@ _Py_Specialize_StoreAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
                 SPECIALIZATION_FAIL(STORE_ATTR, SPEC_FAIL_EXPECTED_ERROR);
                 goto fail;
             }
-            if (dmem->flags & READONLY) {
+            if (dmem->flags & Py_READONLY) {
                 SPECIALIZATION_FAIL(STORE_ATTR, SPEC_FAIL_ATTR_READ_ONLY);
                 goto fail;
             }
@@ -944,7 +1082,7 @@ _Py_Specialize_StoreAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
                 SPECIALIZATION_FAIL(STORE_ATTR, SPEC_FAIL_OUT_OF_RANGE);
                 goto fail;
             }
-            assert(dmem->type == T_OBJECT_EX);
+            assert(dmem->type == Py_T_OBJECT_EX || dmem->type == _Py_T_OBJECT);
             assert(offset > 0);
             cache->index = (uint16_t)offset;
             write_u32(cache->version, type->tp_version_tag);
@@ -1029,7 +1167,7 @@ load_attr_fail_kind(DescriptorClassification kind)
     }
     Py_UNREACHABLE();
 }
-#endif
+#endif   // Py_STATS
 
 static int
 specialize_class_load_attr(PyObject *owner, _Py_CODEUNIT *instr,
@@ -1065,17 +1203,20 @@ specialize_class_load_attr(PyObject *owner, _Py_CODEUNIT *instr,
 // can cause a significant drop in cache hits. A possible test is
 // python.exe -m test_typing test_re test_dis test_zlib.
 static int
-specialize_attr_loadmethod(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name,
-PyObject *descr, DescriptorClassification kind)
+specialize_attr_loadclassattr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name,
+PyObject *descr, DescriptorClassification kind, bool is_method)
 {
     _PyLoadMethodCache *cache = (_PyLoadMethodCache *)(instr + 1);
     PyTypeObject *owner_cls = Py_TYPE(owner);
 
-    assert(kind == METHOD && descr != NULL);
+    assert(descr != NULL);
+    assert((is_method && kind == METHOD) || (!is_method && kind == NON_DESCRIPTOR));
     if (owner_cls->tp_flags & Py_TPFLAGS_MANAGED_DICT) {
-        PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(owner);
+        PyDictOrValues *dorv = _PyObject_DictOrValuesPointer(owner);
         PyDictKeysObject *keys = ((PyHeapTypeObject *)owner_cls)->ht_cached_keys;
-        if (!_PyDictOrValues_IsValues(dorv)) {
+        if (!_PyDictOrValues_IsValues(*dorv) &&
+            !_PyObject_MakeInstanceAttributesFromDict(owner, dorv))
+        {
             SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_HAS_MANAGED_DICT);
             return 0;
         }
@@ -1091,7 +1232,7 @@ PyObject *descr, DescriptorClassification kind)
             return 0;
         }
         write_u32(cache->keys_version, keys_version);
-        instr->op.code = LOAD_ATTR_METHOD_WITH_VALUES;
+        instr->op.code = is_method ? LOAD_ATTR_METHOD_WITH_VALUES : LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES;
     }
     else {
         Py_ssize_t dictoffset = owner_cls->tp_dictoffset;
@@ -1100,9 +1241,9 @@ PyObject *descr, DescriptorClassification kind)
             return 0;
         }
         if (dictoffset == 0) {
-            instr->op.code = LOAD_ATTR_METHOD_NO_DICT;
+            instr->op.code = is_method ? LOAD_ATTR_METHOD_NO_DICT : LOAD_ATTR_NONDESCRIPTOR_NO_DICT;
         }
-        else {
+        else if (is_method) {
             PyObject *dict = *(PyObject **) ((char *)owner + dictoffset);
             if (dict) {
                 SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
@@ -1112,6 +1253,10 @@ PyObject *descr, DescriptorClassification kind)
             assert(owner_cls->tp_dictoffset <= INT16_MAX);
             instr->op.code = LOAD_ATTR_METHOD_LAZY_DICT;
         }
+        else {
+            SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_CLASS_ATTR_SIMPLE);
+            return 0;
+        }
     }
     /* `descr` is borrowed. This is safe for methods (even inherited ones from
     *  super classes!) as long as tp_version_tag is validated for two main reasons:
@@ -1236,16 +1381,7 @@ _Py_Specialize_LoadGlobal(
 static int
 binary_subscr_fail_kind(PyTypeObject *container_type, PyObject *sub)
 {
-    if (container_type == &PyUnicode_Type) {
-        if (PyLong_CheckExact(sub)) {
-            return SPEC_FAIL_SUBSCR_STRING_INT;
-        }
-        if (PySlice_Check(sub)) {
-            return SPEC_FAIL_SUBSCR_STRING_SLICE;
-        }
-        return SPEC_FAIL_OTHER;
-    }
-    else if (strcmp(container_type->tp_name, "array.array") == 0) {
+    if (strcmp(container_type->tp_name, "array.array") == 0) {
         if (PyLong_CheckExact(sub)) {
             return SPEC_FAIL_SUBSCR_ARRAY_INT;
         }
@@ -1270,7 +1406,7 @@ binary_subscr_fail_kind(PyTypeObject *container_type, PyObject *sub)
     }
     return SPEC_FAIL_OTHER;
 }
-#endif
+#endif   // Py_STATS
 
 static int
 function_kind(PyCodeObject *code) {
@@ -1352,6 +1488,19 @@ _Py_Specialize_BinarySubscr(
             PySlice_Check(sub) ? SPEC_FAIL_SUBSCR_TUPLE_SLICE : SPEC_FAIL_OTHER);
         goto fail;
     }
+    if (container_type == &PyUnicode_Type) {
+        if (PyLong_CheckExact(sub)) {
+            if (_PyLong_IsNonNegativeCompact((PyLongObject *)sub)) {
+                instr->op.code = BINARY_SUBSCR_STR_INT;
+                goto success;
+            }
+            SPECIALIZATION_FAIL(BINARY_SUBSCR, SPEC_FAIL_OUT_OF_RANGE);
+            goto fail;
+        }
+        SPECIALIZATION_FAIL(BINARY_SUBSCR,
+            PySlice_Check(sub) ? SPEC_FAIL_SUBSCR_STRING_SLICE : SPEC_FAIL_OTHER);
+        goto fail;
+    }
     if (container_type == &PyDict_Type) {
         instr->op.code = BINARY_SUBSCR_DICT;
         goto success;
@@ -1496,7 +1645,7 @@ _Py_Specialize_StoreSubscr(PyObject *container, PyObject *sub, _Py_CODEUNIT *ins
         }
         goto fail;
     }
-#endif
+#endif   // Py_STATS
     SPECIALIZATION_FAIL(STORE_SUBSCR, SPEC_FAIL_OTHER);
 fail:
     STAT_INC(STORE_SUBSCR, failure);
@@ -1510,28 +1659,58 @@ _Py_Specialize_StoreSubscr(PyObject *container, PyObject *sub, _Py_CODEUNIT *ins
     cache->counter = adaptive_counter_cooldown();
 }
 
+/* Returns a borrowed reference.
+ * The reference is only valid if guarded by a type version check.
+ */
+static PyFunctionObject *
+get_init_for_simple_managed_python_class(PyTypeObject *tp)
+{
+    assert(tp->tp_new == PyBaseObject_Type.tp_new);
+    if (tp->tp_alloc != PyType_GenericAlloc) {
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_OVERRIDDEN);
+        return NULL;
+    }
+    if ((tp->tp_flags & Py_TPFLAGS_MANAGED_DICT) == 0) {
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_NO_DICT);
+        return NULL;
+    }
+    if (!(tp->tp_flags & Py_TPFLAGS_HEAPTYPE)) {
+        /* Is this possible? */
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_EXPECTED_ERROR);
+        return NULL;
+    }
+    PyObject *init = _PyType_Lookup(tp, &_Py_ID(__init__));
+    if (init == NULL || !PyFunction_Check(init)) {
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_INIT_NOT_PYTHON);
+        return NULL;
+    }
+    int kind = function_kind((PyCodeObject *)PyFunction_GET_CODE(init));
+    if (kind != SIMPLE_FUNCTION) {
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_INIT_NOT_SIMPLE);
+        return NULL;
+    }
+    ((PyHeapTypeObject *)tp)->_spec_cache.init = init;
+    return (PyFunctionObject *)init;
+}
+
 static int
-specialize_class_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
-                      PyObject *kwnames)
+specialize_class_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs)
 {
+    assert(PyType_Check(callable));
     PyTypeObject *tp = _PyType_CAST(callable);
-    if (tp->tp_new == PyBaseObject_Type.tp_new) {
-        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_PYTHON_CLASS);
-        return -1;
-    }
     if (tp->tp_flags & Py_TPFLAGS_IMMUTABLETYPE) {
         int oparg = instr->op.arg;
-        if (nargs == 1 && kwnames == NULL && oparg == 1) {
+        if (nargs == 1 && oparg == 1) {
             if (tp == &PyUnicode_Type) {
-                instr->op.code = CALL_NO_KW_STR_1;
+                instr->op.code = CALL_STR_1;
                 return 0;
             }
             else if (tp == &PyType_Type) {
-                instr->op.code = CALL_NO_KW_TYPE_1;
+                instr->op.code = CALL_TYPE_1;
                 return 0;
             }
             else if (tp == &PyTuple_Type) {
-                instr->op.code = CALL_NO_KW_TUPLE_1;
+                instr->op.code = CALL_TUPLE_1;
                 return 0;
             }
         }
@@ -1543,6 +1722,20 @@ specialize_class_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
             SPEC_FAIL_CALL_STR : SPEC_FAIL_CALL_CLASS_NO_VECTORCALL);
         return -1;
     }
+    if (tp->tp_new == PyBaseObject_Type.tp_new) {
+        PyFunctionObject *init = get_init_for_simple_managed_python_class(tp);
+        if (init != NULL) {
+            if (((PyCodeObject *)init->func_code)->co_argcount != nargs+1) {
+                SPECIALIZATION_FAIL(CALL, SPEC_FAIL_WRONG_NUMBER_ARGUMENTS);
+                return -1;
+            }
+            _PyCallCache *cache = (_PyCallCache *)(instr + 1);
+            write_u32(cache->func_version, tp->tp_version_tag);
+            _Py_SET_OPCODE(*instr, CALL_ALLOC_AND_ENTER_INIT);
+            return 0;
+        }
+        return -1;
+    }
     SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_CLASS_MUTABLE);
     return -1;
 }
@@ -1592,17 +1785,12 @@ meth_descr_call_fail_kind(int ml_flags)
             return SPEC_FAIL_CALL_BAD_CALL_FLAGS;
     }
 }
-#endif
+#endif   // Py_STATS
 
 static int
 specialize_method_descriptor(PyMethodDescrObject *descr, _Py_CODEUNIT *instr,
-                             int nargs, PyObject *kwnames)
+                             int nargs)
 {
-    if (kwnames) {
-        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_KWNAMES);
-        return -1;
-    }
-
     switch (descr->d_method->ml_flags &
         (METH_VARARGS | METH_FASTCALL | METH_NOARGS | METH_O |
         METH_KEYWORDS | METH_METHOD)) {
@@ -1611,7 +1799,7 @@ specialize_method_descriptor(PyMethodDescrObject *descr, _Py_CODEUNIT *instr,
                 SPECIALIZATION_FAIL(CALL, SPEC_FAIL_WRONG_NUMBER_ARGUMENTS);
                 return -1;
             }
-            instr->op.code = CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS;
+            instr->op.code = CALL_METHOD_DESCRIPTOR_NOARGS;
             return 0;
         }
         case METH_O: {
@@ -1625,14 +1813,14 @@ specialize_method_descriptor(PyMethodDescrObject *descr, _Py_CODEUNIT *instr,
             bool pop = (next.op.code == POP_TOP);
             int oparg = instr->op.arg;
             if ((PyObject *)descr == list_append && oparg == 1 && pop) {
-                instr->op.code = CALL_NO_KW_LIST_APPEND;
+                instr->op.code = CALL_LIST_APPEND;
                 return 0;
             }
-            instr->op.code = CALL_NO_KW_METHOD_DESCRIPTOR_O;
+            instr->op.code = CALL_METHOD_DESCRIPTOR_O;
             return 0;
         }
         case METH_FASTCALL: {
-            instr->op.code = CALL_NO_KW_METHOD_DESCRIPTOR_FAST;
+            instr->op.code = CALL_METHOD_DESCRIPTOR_FAST;
             return 0;
         }
         case METH_FASTCALL | METH_KEYWORDS: {
@@ -1646,7 +1834,7 @@ specialize_method_descriptor(PyMethodDescrObject *descr, _Py_CODEUNIT *instr,
 
 static int
 specialize_py_call(PyFunctionObject *func, _Py_CODEUNIT *instr, int nargs,
-                   PyObject *kwnames, bool bound_method)
+                   bool bound_method)
 {
     _PyCallCache *cache = (_PyCallCache *)(instr + 1);
     PyCodeObject *code = (PyCodeObject *)func->func_code;
@@ -1656,19 +1844,15 @@ specialize_py_call(PyFunctionObject *func, _Py_CODEUNIT *instr, int nargs,
         SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_PEP_523);
         return -1;
     }
-    if (kwnames) {
-        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_KWNAMES);
-        return -1;
-    }
     if (kind != SIMPLE_FUNCTION) {
         SPECIALIZATION_FAIL(CALL, kind);
         return -1;
     }
     int argcount = code->co_argcount;
     int defcount = func->func_defaults == NULL ? 0 : (int)PyTuple_GET_SIZE(func->func_defaults);
-    assert(defcount <= argcount);
     int min_args = argcount-defcount;
-    if (nargs > argcount || nargs < min_args) {
+    // GH-105840: min_args is negative when somebody sets too many __defaults__!
+    if (min_args < 0 || nargs > argcount || nargs < min_args) {
         SPECIALIZATION_FAIL(CALL, SPEC_FAIL_WRONG_NUMBER_ARGUMENTS);
         return -1;
     }
@@ -1695,8 +1879,7 @@ specialize_py_call(PyFunctionObject *func, _Py_CODEUNIT *instr, int nargs,
 }
 
 static int
-specialize_c_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
-                  PyObject *kwnames)
+specialize_c_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs)
 {
     if (PyCFunction_GET_FUNCTION(callable) == NULL) {
         return 1;
@@ -1705,10 +1888,6 @@ specialize_c_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
         (METH_VARARGS | METH_FASTCALL | METH_NOARGS | METH_O |
         METH_KEYWORDS | METH_METHOD)) {
         case METH_O: {
-            if (kwnames) {
-                SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_KWNAMES);
-                return -1;
-            }
             if (nargs != 1) {
                 SPECIALIZATION_FAIL(CALL, SPEC_FAIL_WRONG_NUMBER_ARGUMENTS);
                 return 1;
@@ -1716,26 +1895,22 @@ specialize_c_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
             /* len(o) */
             PyInterpreterState *interp = _PyInterpreterState_GET();
             if (callable == interp->callable_cache.len) {
-                instr->op.code = CALL_NO_KW_LEN;
+                instr->op.code = CALL_LEN;
                 return 0;
             }
-            instr->op.code = CALL_NO_KW_BUILTIN_O;
+            instr->op.code = CALL_BUILTIN_O;
             return 0;
         }
         case METH_FASTCALL: {
-            if (kwnames) {
-                SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_KWNAMES);
-                return -1;
-            }
             if (nargs == 2) {
                 /* isinstance(o1, o2) */
                 PyInterpreterState *interp = _PyInterpreterState_GET();
                 if (callable == interp->callable_cache.isinstance) {
-                    instr->op.code = CALL_NO_KW_ISINSTANCE;
+                    instr->op.code = CALL_ISINSTANCE;
                     return 0;
                 }
             }
-            instr->op.code = CALL_NO_KW_BUILTIN_FAST;
+            instr->op.code = CALL_BUILTIN_FAST;
             return 0;
         }
         case METH_FASTCALL | METH_KEYWORDS: {
@@ -1773,15 +1948,11 @@ call_fail_kind(PyObject *callable)
     }
     return SPEC_FAIL_OTHER;
 }
-#endif
+#endif   // Py_STATS
 
 
-/* TODO:
-    - Specialize calling classes.
-*/
 void
-_Py_Specialize_Call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
-                    PyObject *kwnames)
+_Py_Specialize_Call(PyObject *callable, _Py_CODEUNIT *instr, int nargs)
 {
     assert(ENABLE_SPECIALIZATION);
     assert(_PyOpcode_Caches[CALL] == INLINE_CACHE_ENTRIES_CALL);
@@ -1789,25 +1960,23 @@ _Py_Specialize_Call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
     _PyCallCache *cache = (_PyCallCache *)(instr + 1);
     int fail;
     if (PyCFunction_CheckExact(callable)) {
-        fail = specialize_c_call(callable, instr, nargs, kwnames);
+        fail = specialize_c_call(callable, instr, nargs);
     }
     else if (PyFunction_Check(callable)) {
-        fail = specialize_py_call((PyFunctionObject *)callable, instr, nargs,
-                                  kwnames, false);
+        fail = specialize_py_call((PyFunctionObject *)callable, instr, nargs, false);
     }
     else if (PyType_Check(callable)) {
-        fail = specialize_class_call(callable, instr, nargs, kwnames);
+        fail = specialize_class_call(callable, instr, nargs);
     }
     else if (Py_IS_TYPE(callable, &PyMethodDescr_Type)) {
-        fail = specialize_method_descriptor((PyMethodDescrObject *)callable,
-                                            instr, nargs, kwnames);
+        fail = specialize_method_descriptor((PyMethodDescrObject *)callable, instr, nargs);
     }
     else if (PyMethod_Check(callable)) {
         PyObject *func = ((PyMethodObject *)callable)->im_func;
         if (PyFunction_Check(func)) {
-            fail = specialize_py_call((PyFunctionObject *)func,
-                                      instr, nargs+1, kwnames, true);
-        } else {
+            fail = specialize_py_call((PyFunctionObject *)func, instr, nargs+1, true);
+        }
+        else {
             SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_BOUND_METHOD);
             fail = -1;
         }
@@ -1897,7 +2066,7 @@ binary_op_fail_kind(int oparg, PyObject *lhs, PyObject *rhs)
     }
     Py_UNREACHABLE();
 }
-#endif
+#endif   // Py_STATS
 
 void
 _Py_Specialize_BinaryOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr,
@@ -1914,8 +2083,7 @@ _Py_Specialize_BinaryOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr,
             }
             if (PyUnicode_CheckExact(lhs)) {
                 _Py_CODEUNIT next = instr[INLINE_CACHE_ENTRIES_BINARY_OP + 1];
-                bool to_store = (next.op.code == STORE_FAST ||
-                                 next.op.code == STORE_FAST__LOAD_FAST);
+                bool to_store = (next.op.code == STORE_FAST);
                 if (to_store && locals[next.op.arg] == lhs) {
                     instr->op.code = BINARY_OP_INPLACE_ADD_UNICODE;
                     goto success;
@@ -2005,7 +2173,7 @@ compare_op_fail_kind(PyObject *lhs, PyObject *rhs)
     }
     return SPEC_FAIL_OTHER;
 }
-#endif
+#endif   // Py_STATS
 
 void
 _Py_Specialize_CompareOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr,
@@ -2013,6 +2181,8 @@ _Py_Specialize_CompareOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr,
 {
     assert(ENABLE_SPECIALIZATION);
     assert(_PyOpcode_Caches[COMPARE_OP] == INLINE_CACHE_ENTRIES_COMPARE_OP);
+    // All of these specializations compute boolean values, so they're all valid
+    // regardless of the fifth-lowest oparg bit.
     _PyCompareOpCache *cache = (_PyCompareOpCache *)(instr + 1);
     if (Py_TYPE(lhs) != Py_TYPE(rhs)) {
         SPECIALIZATION_FAIL(COMPARE_OP, compare_op_fail_kind(lhs, rhs));
@@ -2033,7 +2203,7 @@ _Py_Specialize_CompareOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr,
         }
     }
     if (PyUnicode_CheckExact(lhs)) {
-        int cmp = oparg >> 4;
+        int cmp = oparg >> 5;
         if (cmp != Py_EQ && cmp != Py_NE) {
             SPECIALIZATION_FAIL(COMPARE_OP, SPEC_FAIL_COMPARE_OP_STRING);
             goto failure;
@@ -2066,7 +2236,7 @@ unpack_sequence_fail_kind(PyObject *seq)
     }
     return SPEC_FAIL_OTHER;
 }
-#endif
+#endif   // Py_STATS
 
 void
 _Py_Specialize_UnpackSequence(PyObject *seq, _Py_CODEUNIT *instr, int oparg)
@@ -2107,7 +2277,6 @@ _Py_Specialize_UnpackSequence(PyObject *seq, _Py_CODEUNIT *instr, int oparg)
 }
 
 #ifdef Py_STATS
-
 int
  _PySpecialization_ClassifyIterator(PyObject *iter)
 {
@@ -2178,8 +2347,7 @@ int
     }
     return SPEC_FAIL_OTHER;
 }
-
-#endif
+#endif   // Py_STATS
 
 void
 _Py_Specialize_ForIter(PyObject *iter, _Py_CODEUNIT *instr, int oparg)
@@ -2249,3 +2417,134 @@ _Py_Specialize_Send(PyObject *receiver, _Py_CODEUNIT *instr)
     STAT_INC(SEND, success);
     cache->counter = adaptive_counter_cooldown();
 }
+
+void
+_Py_Specialize_ToBool(PyObject *value, _Py_CODEUNIT *instr)
+{
+    assert(ENABLE_SPECIALIZATION);
+    assert(_PyOpcode_Caches[TO_BOOL] == INLINE_CACHE_ENTRIES_TO_BOOL);
+    _PyToBoolCache *cache = (_PyToBoolCache *)(instr + 1);
+    if (PyBool_Check(value)) {
+        instr->op.code = TO_BOOL_BOOL;
+        goto success;
+    }
+    if (PyLong_CheckExact(value)) {
+        instr->op.code = TO_BOOL_INT;
+        goto success;
+    }
+    if (PyList_CheckExact(value)) {
+        instr->op.code = TO_BOOL_LIST;
+        goto success;
+    }
+    if (Py_IsNone(value)) {
+        instr->op.code = TO_BOOL_NONE;
+        goto success;
+    }
+    if (PyUnicode_CheckExact(value)) {
+        instr->op.code = TO_BOOL_STR;
+        goto success;
+    }
+    if (PyType_HasFeature(Py_TYPE(value), Py_TPFLAGS_HEAPTYPE)) {
+        PyNumberMethods *nb = Py_TYPE(value)->tp_as_number;
+        if (nb && nb->nb_bool) {
+            SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_NUMBER);
+            goto failure;
+        }
+        PyMappingMethods *mp = Py_TYPE(value)->tp_as_mapping;
+        if (mp && mp->mp_length) {
+            SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_MAPPING);
+            goto failure;
+        }
+        PySequenceMethods *sq = Py_TYPE(value)->tp_as_sequence;
+        if (sq && sq->sq_length) {
+            SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_SEQUENCE);
+            goto failure;
+        }
+        if (!PyUnstable_Type_AssignVersionTag(Py_TYPE(value))) {
+            SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_OUT_OF_VERSIONS);
+            goto failure;
+        }
+        uint32_t version = Py_TYPE(value)->tp_version_tag;
+        instr->op.code = TO_BOOL_ALWAYS_TRUE;
+        write_u32(cache->version, version);
+        assert(version);
+        goto success;
+    }
+#ifdef Py_STATS
+    if (PyByteArray_CheckExact(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_BYTEARRAY);
+        goto failure;
+    }
+    if (PyBytes_CheckExact(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_BYTES);
+        goto failure;
+    }
+    if (PyDict_CheckExact(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_DICT);
+        goto failure;
+    }
+    if (PyFloat_CheckExact(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_FLOAT);
+        goto failure;
+    }
+    if (PyMemoryView_Check(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_MEMORY_VIEW);
+        goto failure;
+    }
+    if (PyAnySet_CheckExact(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_SET);
+        goto failure;
+    }
+    if (PyTuple_CheckExact(value)) {
+        SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_TO_BOOL_TUPLE);
+        goto failure;
+    }
+    SPECIALIZATION_FAIL(TO_BOOL, SPEC_FAIL_OTHER);
+#endif   // Py_STATS
+failure:
+    STAT_INC(TO_BOOL, failure);
+    instr->op.code = TO_BOOL;
+    cache->counter = adaptive_counter_backoff(cache->counter);
+    return;
+success:
+    STAT_INC(TO_BOOL, success);
+    cache->counter = adaptive_counter_cooldown();
+}
+
+/* Code init cleanup.
+ * CALL_ALLOC_AND_ENTER_INIT will set up
+ * the frame to execute the EXIT_INIT_CHECK
+ * instruction.
+ * Ends with a RESUME so that it is not traced.
+ * This is used as a plain code object, not a function,
+ * so must not access globals or builtins.
+ */
+
+#define NO_LOC_4 (128 | (PY_CODE_LOCATION_INFO_NONE << 3) | 3)
+
+static const PyBytesObject no_location = {
+    PyVarObject_HEAD_INIT(&PyBytes_Type, 1)
+    .ob_sval = { NO_LOC_4 }
+};
+
+const struct _PyCode_DEF(8) _Py_InitCleanup = {
+    _PyVarObject_HEAD_INIT(&PyCode_Type, 3),
+    .co_consts = (PyObject *)&_Py_SINGLETON(tuple_empty),
+    .co_names = (PyObject *)&_Py_SINGLETON(tuple_empty),
+    .co_exceptiontable = (PyObject *)&_Py_SINGLETON(bytes_empty),
+    .co_flags = CO_OPTIMIZED,
+    .co_localsplusnames = (PyObject *)&_Py_SINGLETON(tuple_empty),
+    .co_localspluskinds = (PyObject *)&_Py_SINGLETON(bytes_empty),
+    .co_filename = &_Py_ID(__init__),
+    .co_name = &_Py_ID(__init__),
+    .co_qualname = &_Py_ID(__init__),
+    .co_linetable = (PyObject *)&no_location,
+    ._co_firsttraceable = 4,
+    .co_stacksize = 2,
+    .co_framesize = 2 + FRAME_SPECIALS_SIZE,
+    .co_code_adaptive = {
+        EXIT_INIT_CHECK, 0,
+        RETURN_VALUE, 0,
+        RESUME, RESUME_AT_FUNC_START,
+    }
+};
diff --git a/Python/stdlib_module_names.h b/Python/stdlib_module_names.h
index ed4a0ac2dd32de..701bfc35cc8182 100644
--- a/Python/stdlib_module_names.h
+++ b/Python/stdlib_module_names.h
@@ -22,7 +22,6 @@ static const char* _Py_stdlib_module_names[] = {
 "_compat_pickle",
 "_compression",
 "_contextvars",
-"_crypt",
 "_csv",
 "_ctypes",
 "_curses",
@@ -45,10 +44,10 @@ static const char* _Py_stdlib_module_names[] = {
 "_lzma",
 "_markupbase",
 "_md5",
-"_msi",
 "_multibytecodec",
 "_multiprocessing",
 "_opcode",
+"_opcode_metadata",
 "_operator",
 "_osx_support",
 "_overlapped",
@@ -78,6 +77,7 @@ static const char* _Py_stdlib_module_names[] = {
 "_strptime",
 "_struct",
 "_symtable",
+"_sysconfig",
 "_thread",
 "_threading_local",
 "_tkinter",
@@ -91,14 +91,12 @@ static const char* _Py_stdlib_module_names[] = {
 "_winapi",
 "_zoneinfo",
 "abc",
-"aifc",
 "antigravity",
 "argparse",
 "array",
 "ast",
 "asyncio",
 "atexit",
-"audioop",
 "base64",
 "bdb",
 "binascii",
@@ -107,9 +105,6 @@ static const char* _Py_stdlib_module_names[] = {
 "bz2",
 "cProfile",
 "calendar",
-"cgi",
-"cgitb",
-"chunk",
 "cmath",
 "cmd",
 "code",
@@ -124,7 +119,6 @@ static const char* _Py_stdlib_module_names[] = {
 "contextvars",
 "copy",
 "copyreg",
-"crypt",
 "csv",
 "ctypes",
 "curses",
@@ -164,7 +158,6 @@ static const char* _Py_stdlib_module_names[] = {
 "http",
 "idlelib",
 "imaplib",
-"imghdr",
 "importlib",
 "inspect",
 "io",
@@ -172,24 +165,19 @@ static const char* _Py_stdlib_module_names[] = {
 "itertools",
 "json",
 "keyword",
-"lib2to3",
 "linecache",
 "locale",
 "logging",
 "lzma",
 "mailbox",
-"mailcap",
 "marshal",
 "math",
 "mimetypes",
 "mmap",
 "modulefinder",
-"msilib",
 "msvcrt",
 "multiprocessing",
 "netrc",
-"nis",
-"nntplib",
 "nt",
 "ntpath",
 "nturl2path",
@@ -198,12 +186,10 @@ static const char* _Py_stdlib_module_names[] = {
 "operator",
 "optparse",
 "os",
-"ossaudiodev",
 "pathlib",
 "pdb",
 "pickle",
 "pickletools",
-"pipes",
 "pkgutil",
 "platform",
 "plistlib",
@@ -239,10 +225,8 @@ static const char* _Py_stdlib_module_names[] = {
 "signal",
 "site",
 "smtplib",
-"sndhdr",
 "socket",
 "socketserver",
-"spwd",
 "sqlite3",
 "sre_compile",
 "sre_constants",
@@ -254,14 +238,12 @@ static const char* _Py_stdlib_module_names[] = {
 "stringprep",
 "struct",
 "subprocess",
-"sunau",
 "symtable",
 "sys",
 "sysconfig",
 "syslog",
 "tabnanny",
 "tarfile",
-"telnetlib",
 "tempfile",
 "termios",
 "textwrap",
@@ -284,7 +266,6 @@ static const char* _Py_stdlib_module_names[] = {
 "unicodedata",
 "unittest",
 "urllib",
-"uu",
 "uuid",
 "venv",
 "warnings",
@@ -294,7 +275,6 @@ static const char* _Py_stdlib_module_names[] = {
 "winreg",
 "winsound",
 "wsgiref",
-"xdrlib",
 "xml",
 "xmlrpc",
 "zipapp",
diff --git a/Python/structmember.c b/Python/structmember.c
index 19a75224a0f32e..7a5a6a49d23116 100644
--- a/Python/structmember.c
+++ b/Python/structmember.c
@@ -2,7 +2,7 @@
 /* Map C struct members to Python object attributes */
 
 #include "Python.h"
-#include "structmember.h"         // PyMemberDef
+
 
 PyObject *
 PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
@@ -17,62 +17,62 @@ PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
 
     const char* addr = obj_addr + l->offset;
     switch (l->type) {
-    case T_BOOL:
+    case Py_T_BOOL:
         v = PyBool_FromLong(*(char*)addr);
         break;
-    case T_BYTE:
+    case Py_T_BYTE:
         v = PyLong_FromLong(*(char*)addr);
         break;
-    case T_UBYTE:
+    case Py_T_UBYTE:
         v = PyLong_FromUnsignedLong(*(unsigned char*)addr);
         break;
-    case T_SHORT:
+    case Py_T_SHORT:
         v = PyLong_FromLong(*(short*)addr);
         break;
-    case T_USHORT:
+    case Py_T_USHORT:
         v = PyLong_FromUnsignedLong(*(unsigned short*)addr);
         break;
-    case T_INT:
+    case Py_T_INT:
         v = PyLong_FromLong(*(int*)addr);
         break;
-    case T_UINT:
+    case Py_T_UINT:
         v = PyLong_FromUnsignedLong(*(unsigned int*)addr);
         break;
-    case T_LONG:
+    case Py_T_LONG:
         v = PyLong_FromLong(*(long*)addr);
         break;
-    case T_ULONG:
+    case Py_T_ULONG:
         v = PyLong_FromUnsignedLong(*(unsigned long*)addr);
         break;
-    case T_PYSSIZET:
+    case Py_T_PYSSIZET:
         v = PyLong_FromSsize_t(*(Py_ssize_t*)addr);
         break;
-    case T_FLOAT:
+    case Py_T_FLOAT:
         v = PyFloat_FromDouble((double)*(float*)addr);
         break;
-    case T_DOUBLE:
+    case Py_T_DOUBLE:
         v = PyFloat_FromDouble(*(double*)addr);
         break;
-    case T_STRING:
+    case Py_T_STRING:
         if (*(char**)addr == NULL) {
             v = Py_NewRef(Py_None);
         }
         else
             v = PyUnicode_FromString(*(char**)addr);
         break;
-    case T_STRING_INPLACE:
+    case Py_T_STRING_INPLACE:
         v = PyUnicode_FromString((char*)addr);
         break;
-    case T_CHAR:
+    case Py_T_CHAR:
         v = PyUnicode_FromStringAndSize((char*)addr, 1);
         break;
-    case T_OBJECT:
+    case _Py_T_OBJECT:
         v = *(PyObject **)addr;
         if (v == NULL)
             v = Py_None;
         Py_INCREF(v);
         break;
-    case T_OBJECT_EX:
+    case Py_T_OBJECT_EX:
         v = *(PyObject **)addr;
         if (v == NULL) {
             PyObject *obj = (PyObject *)obj_addr;
@@ -83,13 +83,13 @@ PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
         }
         Py_XINCREF(v);
         break;
-    case T_LONGLONG:
+    case Py_T_LONGLONG:
         v = PyLong_FromLongLong(*(long long *)addr);
         break;
-    case T_ULONGLONG:
+    case Py_T_ULONGLONG:
         v = PyLong_FromUnsignedLongLong(*(unsigned long long *)addr);
         break;
-    case T_NONE:
+    case _Py_T_NONE:
         v = Py_NewRef(Py_None);
         break;
     default:
@@ -118,27 +118,27 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
 
     addr += l->offset;
 
-    if ((l->flags & READONLY))
+    if ((l->flags & Py_READONLY))
     {
         PyErr_SetString(PyExc_AttributeError, "readonly attribute");
         return -1;
     }
     if (v == NULL) {
-        if (l->type == T_OBJECT_EX) {
+        if (l->type == Py_T_OBJECT_EX) {
             /* Check if the attribute is set. */
             if (*(PyObject **)addr == NULL) {
                 PyErr_SetString(PyExc_AttributeError, l->name);
                 return -1;
             }
         }
-        else if (l->type != T_OBJECT) {
+        else if (l->type != _Py_T_OBJECT) {
             PyErr_SetString(PyExc_TypeError,
                             "can't delete numeric/char attribute");
             return -1;
         }
     }
     switch (l->type) {
-    case T_BOOL:{
+    case Py_T_BOOL:{
         if (!PyBool_Check(v)) {
             PyErr_SetString(PyExc_TypeError,
                             "attribute value type must be bool");
@@ -150,7 +150,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             *(char*)addr = (char) 0;
         break;
         }
-    case T_BYTE:{
+    case Py_T_BYTE:{
         long long_val = PyLong_AsLong(v);
         if ((long_val == -1) && PyErr_Occurred())
             return -1;
@@ -161,7 +161,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             WARN("Truncation of value to char");
         break;
         }
-    case T_UBYTE:{
+    case Py_T_UBYTE:{
         long long_val = PyLong_AsLong(v);
         if ((long_val == -1) && PyErr_Occurred())
             return -1;
@@ -170,7 +170,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             WARN("Truncation of value to unsigned char");
         break;
         }
-    case T_SHORT:{
+    case Py_T_SHORT:{
         long long_val = PyLong_AsLong(v);
         if ((long_val == -1) && PyErr_Occurred())
             return -1;
@@ -179,7 +179,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             WARN("Truncation of value to short");
         break;
         }
-    case T_USHORT:{
+    case Py_T_USHORT:{
         long long_val = PyLong_AsLong(v);
         if ((long_val == -1) && PyErr_Occurred())
             return -1;
@@ -188,7 +188,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             WARN("Truncation of value to unsigned short");
         break;
         }
-    case T_INT:{
+    case Py_T_INT:{
         long long_val = PyLong_AsLong(v);
         if ((long_val == -1) && PyErr_Occurred())
             return -1;
@@ -197,7 +197,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             WARN("Truncation of value to int");
         break;
         }
-    case T_UINT:{
+    case Py_T_UINT:{
         unsigned long ulong_val = PyLong_AsUnsignedLong(v);
         if ((ulong_val == (unsigned long)-1) && PyErr_Occurred()) {
             /* XXX: For compatibility, accept negative int values
@@ -215,13 +215,13 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             WARN("Truncation of value to unsigned int");
         break;
         }
-    case T_LONG:{
+    case Py_T_LONG:{
         *(long*)addr = PyLong_AsLong(v);
         if ((*(long*)addr == -1) && PyErr_Occurred())
             return -1;
         break;
         }
-    case T_ULONG:{
+    case Py_T_ULONG:{
         *(unsigned long*)addr = PyLong_AsUnsignedLong(v);
         if ((*(unsigned long*)addr == (unsigned long)-1)
             && PyErr_Occurred()) {
@@ -236,32 +236,32 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
         }
         break;
         }
-    case T_PYSSIZET:{
+    case Py_T_PYSSIZET:{
         *(Py_ssize_t*)addr = PyLong_AsSsize_t(v);
         if ((*(Py_ssize_t*)addr == (Py_ssize_t)-1)
             && PyErr_Occurred())
                         return -1;
         break;
         }
-    case T_FLOAT:{
+    case Py_T_FLOAT:{
         double double_val = PyFloat_AsDouble(v);
         if ((double_val == -1) && PyErr_Occurred())
             return -1;
         *(float*)addr = (float)double_val;
         break;
         }
-    case T_DOUBLE:
+    case Py_T_DOUBLE:
         *(double*)addr = PyFloat_AsDouble(v);
         if ((*(double*)addr == -1) && PyErr_Occurred())
             return -1;
         break;
-    case T_OBJECT:
-    case T_OBJECT_EX:
+    case _Py_T_OBJECT:
+    case Py_T_OBJECT_EX:
         oldv = *(PyObject **)addr;
         *(PyObject **)addr = Py_XNewRef(v);
         Py_XDECREF(oldv);
         break;
-    case T_CHAR: {
+    case Py_T_CHAR: {
         const char *string;
         Py_ssize_t len;
 
@@ -273,18 +273,18 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
         *(char*)addr = string[0];
         break;
         }
-    case T_STRING:
-    case T_STRING_INPLACE:
+    case Py_T_STRING:
+    case Py_T_STRING_INPLACE:
         PyErr_SetString(PyExc_TypeError, "readonly attribute");
         return -1;
-    case T_LONGLONG:{
+    case Py_T_LONGLONG:{
         long long value;
         *(long long*)addr = value = PyLong_AsLongLong(v);
         if ((value == -1) && PyErr_Occurred())
             return -1;
         break;
         }
-    case T_ULONGLONG:{
+    case Py_T_ULONGLONG:{
         unsigned long long value;
         /* ??? PyLong_AsLongLong accepts an int, but PyLong_AsUnsignedLongLong
             doesn't ??? */
diff --git a/Python/suggestions.c b/Python/suggestions.c
index f2c018ef2c4533..1ad359b18923f3 100644
--- a/Python/suggestions.c
+++ b/Python/suggestions.c
@@ -1,10 +1,9 @@
 #include "Python.h"
+#include "pycore_code.h"          // _PyCode_GetVarnames()
 #include "pycore_frame.h"
-#include "pycore_runtime.h"         // _PyRuntime
-#include "pycore_global_objects.h"  // _Py_ID()
+#include "pycore_pyerrors.h"      // export _Py_UTF8_Edit_Cost()
+#include "pycore_runtime.h"       // _Py_ID()
 
-#include "pycore_pyerrors.h"
-#include "pycore_code.h"        // _PyCode_GetVarnames()
 #include "stdlib_module_names.h"  // _Py_stdlib_module_names
 
 #define MAX_CANDIDATE_ITEMS 750
@@ -126,8 +125,8 @@ levenshtein_distance(const char *a, size_t a_size,
     return result;
 }
 
-static inline PyObject *
-calculate_suggestions(PyObject *dir,
+PyObject *
+_Py_CalculateSuggestions(PyObject *dir,
                       PyObject *name)
 {
     assert(!PyErr_Occurred());
@@ -151,15 +150,15 @@ calculate_suggestions(PyObject *dir,
     }
     for (int i = 0; i < dir_size; ++i) {
         PyObject *item = PyList_GET_ITEM(dir, i);
+        if (_PyUnicode_Equal(name, item)) {
+            continue;
+        }
         Py_ssize_t item_size;
         const char *item_str = PyUnicode_AsUTF8AndSize(item, &item_size);
         if (item_str == NULL) {
             PyMem_Free(buffer);
             return NULL;
         }
-        if (PyUnicode_CompareWithASCIIString(name, item_str) == 0) {
-            continue;
-        }
         // No more than 1/3 of the involved characters should need changed.
         Py_ssize_t max_distance = (name_size + item_size + 3) * MOVE_COST / 6;
         // Don't take matches we've already beaten.
@@ -195,7 +194,7 @@ get_suggestions_for_attribute_error(PyAttributeErrorObject *exc)
         return NULL;
     }
 
-    PyObject *suggestions = calculate_suggestions(dir, name);
+    PyObject *suggestions = _Py_CalculateSuggestions(dir, name);
     Py_DECREF(dir);
     return suggestions;
 }
@@ -220,37 +219,46 @@ get_suggestions_for_name_error(PyObject* name, PyFrameObject* frame)
     assert(code != NULL && code->co_localsplusnames != NULL);
 
     PyObject *varnames = _PyCode_GetVarnames(code);
+    Py_DECREF(code);
     if (varnames == NULL) {
         return NULL;
     }
     PyObject *dir = PySequence_List(varnames);
     Py_DECREF(varnames);
-    Py_DECREF(code);
     if (dir == NULL) {
         return NULL;
     }
 
     // Are we inside a method and the instance has an attribute called 'name'?
-    if (PySequence_Contains(dir, &_Py_ID(self)) > 0) {
+    int res = PySequence_Contains(dir, &_Py_ID(self));
+    if (res < 0) {
+        goto error;
+    }
+    if (res > 0) {
         PyObject* locals = PyFrame_GetLocals(frame);
         if (!locals) {
             goto error;
         }
-        PyObject* self = PyDict_GetItem(locals, &_Py_ID(self)); /* borrowed */
-        Py_DECREF(locals);
+        PyObject* self = PyDict_GetItemWithError(locals, &_Py_ID(self)); /* borrowed */
         if (!self) {
+            Py_DECREF(locals);
             goto error;
         }
 
-        if (PyObject_HasAttr(self, name)) {
+        res = PyObject_HasAttrWithError(self, name);
+        Py_DECREF(locals);
+        if (res < 0) {
+            goto error;
+        }
+        if (res) {
             Py_DECREF(dir);
-            return PyUnicode_FromFormat("self.%S", name);
+            return PyUnicode_FromFormat("self.%U", name);
         }
     }
 
-    PyObject *suggestions = calculate_suggestions(dir, name);
+    PyObject *suggestions = _Py_CalculateSuggestions(dir, name);
     Py_DECREF(dir);
-    if (suggestions != NULL) {
+    if (suggestions != NULL || PyErr_Occurred()) {
         return suggestions;
     }
 
@@ -258,9 +266,9 @@ get_suggestions_for_name_error(PyObject* name, PyFrameObject* frame)
     if (dir == NULL) {
         return NULL;
     }
-    suggestions = calculate_suggestions(dir, name);
+    suggestions = _Py_CalculateSuggestions(dir, name);
     Py_DECREF(dir);
-    if (suggestions != NULL) {
+    if (suggestions != NULL || PyErr_Occurred()) {
         return suggestions;
     }
 
@@ -268,7 +276,7 @@ get_suggestions_for_name_error(PyObject* name, PyFrameObject* frame)
     if (dir == NULL) {
         return NULL;
     }
-    suggestions = calculate_suggestions(dir, name);
+    suggestions = _Py_CalculateSuggestions(dir, name);
     Py_DECREF(dir);
 
     return suggestions;
@@ -319,15 +327,16 @@ offer_suggestions_for_name_error(PyNameErrorObject *exc)
     assert(frame != NULL);
 
     PyObject* suggestion = get_suggestions_for_name_error(name, frame);
-    bool is_stdlib_module = is_name_stdlib_module(name);
-
-    if (suggestion == NULL && !is_stdlib_module) {
+    if (suggestion == NULL && PyErr_Occurred()) {
         return NULL;
     }
 
     // Add a trailer ". Did you mean: (...)?"
     PyObject* result = NULL;
-    if (!is_stdlib_module) {
+    if (!is_name_stdlib_module(name)) {
+        if (suggestion == NULL) {
+            return NULL;
+        }
         result = PyUnicode_FromFormat(". Did you mean: %R?", suggestion);
     } else if (suggestion == NULL) {
         result = PyUnicode_FromFormat(". Did you forget to import %R?", name);
@@ -359,7 +368,7 @@ offer_suggestions_for_import_error(PyImportErrorObject *exc)
         return NULL;
     }
 
-    PyObject *suggestion = calculate_suggestions(dir, name);
+    PyObject *suggestion = _Py_CalculateSuggestions(dir, name);
     Py_DECREF(dir);
     if (!suggestion) {
         return NULL;
diff --git a/Python/symtable.c b/Python/symtable.c
index 2c29f608413501..52d5932896b263 100644
--- a/Python/symtable.c
+++ b/Python/symtable.c
@@ -1,9 +1,11 @@
 #include "Python.h"
-#include "pycore_ast.h"           // identifier, stmt_ty
+#include "pycore_ast.h"           // stmt_ty
 #include "pycore_parser.h"        // _PyParser_ASTFromString()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_symtable.h"      // PySTEntryObject
-#include "structmember.h"         // PyMemberDef
+
+// Set this to 1 to dump all symtables to stdout for debugging
+#define _PY_DUMP_SYMTABLE 0
 
 /* error strings used for warnings */
 #define GLOBAL_PARAM \
@@ -35,6 +37,15 @@
 #define NAMED_EXPR_COMP_IN_CLASS \
 "assignment expression within a comprehension cannot be used in a class body"
 
+#define NAMED_EXPR_COMP_IN_TYPEVAR_BOUND \
+"assignment expression within a comprehension cannot be used in a TypeVar bound"
+
+#define NAMED_EXPR_COMP_IN_TYPEALIAS \
+"assignment expression within a comprehension cannot be used in a type alias"
+
+#define NAMED_EXPR_COMP_IN_TYPEPARAM \
+"assignment expression within a comprehension cannot be used within the definition of a generic"
+
 #define NAMED_EXPR_COMP_CONFLICT \
 "assignment expression cannot rebind comprehension iteration variable '%U'"
 
@@ -45,7 +56,19 @@
 "assignment expression cannot be used in a comprehension iterable expression"
 
 #define ANNOTATION_NOT_ALLOWED \
-"'%s' can not be used within an annotation"
+"%s cannot be used within an annotation"
+
+#define TYPEVAR_BOUND_NOT_ALLOWED \
+"%s cannot be used within a TypeVar bound"
+
+#define TYPEALIAS_NOT_ALLOWED \
+"%s cannot be used within a type alias"
+
+#define TYPEPARAM_NOT_ALLOWED \
+"%s cannot be used within the definition of a generic"
+
+#define DUPLICATE_TYPE_PARAM \
+"duplicate type parameter '%U'"
 
 
 #define LOCATION(x) \
@@ -95,7 +118,7 @@ ste_new(struct symtable *st, identifier name, _Py_block_ty block,
 
     if (st->st_cur != NULL &&
         (st->st_cur->ste_nested ||
-         st->st_cur->ste_type == FunctionBlock))
+         _PyST_IsFunctionLike(st->st_cur)))
         ste->ste_nested = 1;
     ste->ste_child_free = 0;
     ste->ste_generator = 0;
@@ -105,7 +128,9 @@ ste_new(struct symtable *st, identifier name, _Py_block_ty block,
     ste->ste_needs_class_closure = 0;
     ste->ste_comp_inlined = 0;
     ste->ste_comp_iter_target = 0;
+    ste->ste_can_see_class_scope = 0;
     ste->ste_comp_iter_expr = 0;
+    ste->ste_needs_classdict = 0;
 
     ste->ste_symbols = PyDict_New();
     ste->ste_varnames = PyList_New(0);
@@ -127,9 +152,8 @@ ste_new(struct symtable *st, identifier name, _Py_block_ty block,
 static PyObject *
 ste_repr(PySTEntryObject *ste)
 {
-    return PyUnicode_FromFormat("<symtable entry %U(%ld), line %d>",
-                                ste->ste_name,
-                                PyLong_AS_LONG(ste->ste_id), ste->ste_lineno);
+    return PyUnicode_FromFormat("<symtable entry %U(%R), line %d>",
+                                ste->ste_name, ste->ste_id, ste->ste_lineno);
 }
 
 static void
@@ -148,14 +172,14 @@ ste_dealloc(PySTEntryObject *ste)
 #define OFF(x) offsetof(PySTEntryObject, x)
 
 static PyMemberDef ste_memberlist[] = {
-    {"id",       T_OBJECT, OFF(ste_id), READONLY},
-    {"name",     T_OBJECT, OFF(ste_name), READONLY},
-    {"symbols",  T_OBJECT, OFF(ste_symbols), READONLY},
-    {"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
-    {"children", T_OBJECT, OFF(ste_children), READONLY},
-    {"nested",   T_INT,    OFF(ste_nested), READONLY},
-    {"type",     T_INT,    OFF(ste_type), READONLY},
-    {"lineno",   T_INT,    OFF(ste_lineno), READONLY},
+    {"id",       _Py_T_OBJECT, OFF(ste_id), Py_READONLY},
+    {"name",     _Py_T_OBJECT, OFF(ste_name), Py_READONLY},
+    {"symbols",  _Py_T_OBJECT, OFF(ste_symbols), Py_READONLY},
+    {"varnames", _Py_T_OBJECT, OFF(ste_varnames), Py_READONLY},
+    {"children", _Py_T_OBJECT, OFF(ste_children), Py_READONLY},
+    {"nested",   Py_T_INT,    OFF(ste_nested), Py_READONLY},
+    {"type",     Py_T_INT,    OFF(ste_type), Py_READONLY},
+    {"lineno",   Py_T_INT,    OFF(ste_lineno), Py_READONLY},
     {NULL}
 };
 
@@ -208,6 +232,7 @@ static int symtable_enter_block(struct symtable *st, identifier name,
 static int symtable_exit_block(struct symtable *st);
 static int symtable_visit_stmt(struct symtable *st, stmt_ty s);
 static int symtable_visit_expr(struct symtable *st, expr_ty s);
+static int symtable_visit_type_param(struct symtable *st, type_param_ty s);
 static int symtable_visit_genexp(struct symtable *st, expr_ty s);
 static int symtable_visit_listcomp(struct symtable *st, expr_ty s);
 static int symtable_visit_setcomp(struct symtable *st, expr_ty s);
@@ -228,6 +253,109 @@ static int symtable_visit_pattern(struct symtable *st, pattern_ty s);
 static int symtable_raise_if_annotation_block(struct symtable *st, const char *, expr_ty);
 static int symtable_raise_if_comprehension_block(struct symtable *st, expr_ty);
 
+/* For debugging purposes only */
+#if _PY_DUMP_SYMTABLE
+static void _dump_symtable(PySTEntryObject* ste, PyObject* prefix)
+{
+    const char *blocktype = "";
+    switch (ste->ste_type) {
+        case FunctionBlock: blocktype = "FunctionBlock"; break;
+        case ClassBlock: blocktype = "ClassBlock"; break;
+        case ModuleBlock: blocktype = "ModuleBlock"; break;
+        case AnnotationBlock: blocktype = "AnnotationBlock"; break;
+        case TypeVarBoundBlock: blocktype = "TypeVarBoundBlock"; break;
+        case TypeAliasBlock: blocktype = "TypeAliasBlock"; break;
+        case TypeParamBlock: blocktype = "TypeParamBlock"; break;
+    }
+    const char *comptype = "";
+    switch (ste->ste_comprehension) {
+        case ListComprehension: comptype = " ListComprehension"; break;
+        case DictComprehension: comptype = " DictComprehension"; break;
+        case SetComprehension: comptype = " SetComprehension"; break;
+        case GeneratorExpression: comptype = " GeneratorExpression"; break;
+        case NoComprehension: break;
+    }
+    PyObject* msg = PyUnicode_FromFormat(
+        (
+            "%U=== Symtable for %U ===\n"
+            "%U%s%s\n"
+            "%U%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
+            "%Ulineno: %d col_offset: %d\n"
+            "%U--- Symbols ---\n"
+        ),
+        prefix,
+        ste->ste_name,
+        prefix,
+        blocktype,
+        comptype,
+        prefix,
+        ste->ste_nested ? " nested" : "",
+        ste->ste_free ? " free" : "",
+        ste->ste_child_free ? " child_free" : "",
+        ste->ste_generator ? " generator" : "",
+        ste->ste_coroutine ? " coroutine" : "",
+        ste->ste_varargs ? " varargs" : "",
+        ste->ste_varkeywords ? " varkeywords" : "",
+        ste->ste_returns_value ? " returns_value" : "",
+        ste->ste_needs_class_closure ? " needs_class_closure" : "",
+        ste->ste_needs_classdict ? " needs_classdict" : "",
+        ste->ste_comp_inlined ? " comp_inlined" : "",
+        ste->ste_comp_iter_target ? " comp_iter_target" : "",
+        ste->ste_can_see_class_scope ? " can_see_class_scope" : "",
+        prefix,
+        ste->ste_lineno,
+        ste->ste_col_offset,
+        prefix
+    );
+    assert(msg != NULL);
+    printf("%s", PyUnicode_AsUTF8(msg));
+    Py_DECREF(msg);
+    PyObject *name, *value;
+    Py_ssize_t pos = 0;
+    while (PyDict_Next(ste->ste_symbols, &pos, &name, &value)) {
+        int scope = _PyST_GetScope(ste, name);
+        long flags = _PyST_GetSymbol(ste, name);
+        printf("%s  %s: ", PyUnicode_AsUTF8(prefix), PyUnicode_AsUTF8(name));
+        if (flags & DEF_GLOBAL) printf(" DEF_GLOBAL");
+        if (flags & DEF_LOCAL) printf(" DEF_LOCAL");
+        if (flags & DEF_PARAM) printf(" DEF_PARAM");
+        if (flags & DEF_NONLOCAL) printf(" DEF_NONLOCAL");
+        if (flags & USE) printf(" USE");
+        if (flags & DEF_FREE) printf(" DEF_FREE");
+        if (flags & DEF_FREE_CLASS) printf(" DEF_FREE_CLASS");
+        if (flags & DEF_IMPORT) printf(" DEF_IMPORT");
+        if (flags & DEF_ANNOT) printf(" DEF_ANNOT");
+        if (flags & DEF_COMP_ITER) printf(" DEF_COMP_ITER");
+        if (flags & DEF_TYPE_PARAM) printf(" DEF_TYPE_PARAM");
+        if (flags & DEF_COMP_CELL) printf(" DEF_COMP_CELL");
+        switch (scope) {
+            case LOCAL: printf(" LOCAL"); break;
+            case GLOBAL_EXPLICIT: printf(" GLOBAL_EXPLICIT"); break;
+            case GLOBAL_IMPLICIT: printf(" GLOBAL_IMPLICIT"); break;
+            case FREE: printf(" FREE"); break;
+            case CELL: printf(" CELL"); break;
+        }
+        printf("\n");
+    }
+    printf("%s--- Children ---\n", PyUnicode_AsUTF8(prefix));
+    PyObject *new_prefix = PyUnicode_FromFormat("  %U", prefix);
+    assert(new_prefix != NULL);
+    for (Py_ssize_t i = 0; i < PyList_GET_SIZE(ste->ste_children); i++) {
+        PyObject *child = PyList_GetItem(ste->ste_children, i);
+        assert(child != NULL && PySTEntry_Check(child));
+        _dump_symtable((PySTEntryObject *)child, new_prefix);
+    }
+    Py_DECREF(new_prefix);
+}
+
+static void dump_symtable(PySTEntryObject* ste)
+{
+    PyObject *empty = PyUnicode_FromString("");
+    assert(empty != NULL);
+    _dump_symtable(ste, empty);
+    Py_DECREF(empty);
+}
+#endif
 
 #define DUPLICATE_ARGUMENT \
 "duplicate argument '%U' in function definition"
@@ -258,17 +386,10 @@ symtable_new(void)
     return NULL;
 }
 
-/* When compiling the use of C stack is probably going to be a lot
-   lighter than when executing Python code but still can overflow
-   and causing a Python crash if not checked (e.g. eval("()"*300000)).
-   Using the current recursion limit for the compiler seems too
-   restrictive (it caused at least one test to fail) so a factor is
-   used to allow deeper recursion when compiling an expression.
-
-   Using a scaling factor means this should automatically adjust when
+/* Using a scaling factor means this should automatically adjust when
    the recursion limit is adjusted for small or large C stack allocations.
 */
-#define COMPILER_STACK_FRAME_SCALE 3
+#define COMPILER_STACK_FRAME_SCALE 2
 
 struct symtable *
 _PySymtable_Build(mod_ty mod, PyObject *filename, PyFutureFeatures *future)
@@ -295,10 +416,10 @@ _PySymtable_Build(mod_ty mod, PyObject *filename, PyFutureFeatures *future)
         return NULL;
     }
     /* Be careful here to prevent overflow. */
-    int recursion_depth = C_RECURSION_LIMIT - tstate->c_recursion_remaining;
+    int recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
     starting_recursion_depth = recursion_depth * COMPILER_STACK_FRAME_SCALE;
     st->recursion_depth = starting_recursion_depth;
-    st->recursion_limit = C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
+    st->recursion_limit = Py_C_RECURSION_LIMIT * COMPILER_STACK_FRAME_SCALE;
 
     /* Make the initial symbol information gathering pass */
     if (!symtable_enter_block(st, &_Py_ID(top), ModuleBlock, (void *)mod, 0, 0, 0, 0)) {
@@ -344,8 +465,12 @@ _PySymtable_Build(mod_ty mod, PyObject *filename, PyFutureFeatures *future)
         return NULL;
     }
     /* Make the second symbol analysis pass */
-    if (symtable_analyze(st))
+    if (symtable_analyze(st)) {
+#if _PY_DUMP_SYMTABLE
+        dump_symtable(st->st_top);
+#endif
         return st;
+    }
     _PySymtable_Free(st);
     return NULL;
  error:
@@ -365,25 +490,21 @@ _PySymtable_Free(struct symtable *st)
 }
 
 PySTEntryObject *
-PySymtable_Lookup(struct symtable *st, void *key)
+_PySymtable_Lookup(struct symtable *st, void *key)
 {
     PyObject *k, *v;
 
     k = PyLong_FromVoidPtr(key);
     if (k == NULL)
         return NULL;
-    v = PyDict_GetItemWithError(st->st_blocks, k);
-    Py_DECREF(k);
-
-    if (v) {
-        assert(PySTEntry_Check(v));
-    }
-    else if (!PyErr_Occurred()) {
+    if (PyDict_GetItemRef(st->st_blocks, k, &v) == 0) {
         PyErr_SetString(PyExc_KeyError,
                         "unknown symbol table entry");
     }
+    Py_DECREF(k);
 
-    return (PySTEntryObject *)Py_XNewRef(v);
+    assert(v == NULL || PySTEntry_Check(v));
+    return (PySTEntryObject *)v;
 }
 
 long
@@ -403,6 +524,15 @@ _PyST_GetScope(PySTEntryObject *ste, PyObject *name)
     return (symbol >> SCOPE_OFFSET) & SCOPE_MASK;
 }
 
+int
+_PyST_IsFunctionLike(PySTEntryObject *ste)
+{
+    return ste->ste_type == FunctionBlock
+        || ste->ste_type == TypeVarBoundBlock
+        || ste->ste_type == TypeAliasBlock
+        || ste->ste_type == TypeParamBlock;
+}
+
 static int
 error_at_directive(PySTEntryObject *ste, PyObject *name)
 {
@@ -495,8 +625,9 @@ error_at_directive(PySTEntryObject *ste, PyObject *name)
 static int
 analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
              PyObject *bound, PyObject *local, PyObject *free,
-             PyObject *global)
+             PyObject *global, PyObject *type_params, PySTEntryObject *class_entry)
 {
+    int contains;
     if (flags & DEF_GLOBAL) {
         if (flags & DEF_NONLOCAL) {
             PyErr_Format(PyExc_SyntaxError,
@@ -517,13 +648,27 @@ analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
                          "nonlocal declaration not allowed at module level");
             return error_at_directive(ste, name);
         }
-        if (!PySet_Contains(bound, name)) {
+        contains = PySet_Contains(bound, name);
+        if (contains < 0) {
+            return 0;
+        }
+        if (!contains) {
             PyErr_Format(PyExc_SyntaxError,
                          "no binding for nonlocal '%U' found",
                          name);
 
             return error_at_directive(ste, name);
         }
+        contains = PySet_Contains(type_params, name);
+        if (contains < 0) {
+            return 0;
+        }
+        if (contains) {
+            PyErr_Format(PyExc_SyntaxError,
+                         "nonlocal binding not allowed for type parameter '%U'",
+                         name);
+            return error_at_directive(ste, name);
+        }
         SET_SCOPE(scopes, name, FREE);
         ste->ste_free = 1;
         return PySet_Add(free, name) >= 0;
@@ -534,24 +679,62 @@ analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
             return 0;
         if (PySet_Discard(global, name) < 0)
             return 0;
+        if (flags & DEF_TYPE_PARAM) {
+            if (PySet_Add(type_params, name) < 0)
+                return 0;
+        }
+        else {
+            if (PySet_Discard(type_params, name) < 0)
+                return 0;
+        }
         return 1;
     }
+    // If we were passed class_entry (i.e., we're in an ste_can_see_class_scope scope)
+    // and the bound name is in that set, then the name is potentially bound both by
+    // the immediately enclosing class namespace, and also by an outer function namespace.
+    // In that case, we want the runtime name resolution to look at only the class
+    // namespace and the globals (not the namespace providing the bound).
+    // Similarly, if the name is explicitly global in the class namespace (through the
+    // global statement), we want to also treat it as a global in this scope.
+    if (class_entry != NULL) {
+        long class_flags = _PyST_GetSymbol(class_entry, name);
+        if (class_flags & DEF_GLOBAL) {
+            SET_SCOPE(scopes, name, GLOBAL_EXPLICIT);
+            return 1;
+        }
+        else if (class_flags & DEF_BOUND && !(class_flags & DEF_NONLOCAL)) {
+            SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
+            return 1;
+        }
+    }
     /* If an enclosing block has a binding for this name, it
        is a free variable rather than a global variable.
        Note that having a non-NULL bound implies that the block
        is nested.
     */
-    if (bound && PySet_Contains(bound, name)) {
-        SET_SCOPE(scopes, name, FREE);
-        ste->ste_free = 1;
-        return PySet_Add(free, name) >= 0;
+    if (bound) {
+        contains = PySet_Contains(bound, name);
+        if (contains < 0) {
+            return 0;
+        }
+        if (contains) {
+            SET_SCOPE(scopes, name, FREE);
+            ste->ste_free = 1;
+            return PySet_Add(free, name) >= 0;
+        }
     }
     /* If a parent has a global statement, then call it global
        explicit?  It could also be global implicit.
      */
-    if (global && PySet_Contains(global, name)) {
-        SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
-        return 1;
+    if (global) {
+        contains = PySet_Contains(global, name);
+        if (contains < 0) {
+            return 0;
+        }
+        if (contains) {
+            SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
+            return 1;
+        }
     }
     if (ste->ste_nested)
         ste->ste_free = 1;
@@ -576,7 +759,7 @@ is_free_in_any_child(PySTEntryObject *entry, PyObject *key)
 static int
 inline_comprehension(PySTEntryObject *ste, PySTEntryObject *comp,
                      PyObject *scopes, PyObject *comp_free,
-                     PyObject *promote_to_cell)
+                     PyObject *inlined_cells)
 {
     PyObject *k, *v;
     Py_ssize_t pos = 0;
@@ -589,6 +772,11 @@ inline_comprehension(PySTEntryObject *ste, PySTEntryObject *comp,
         }
         int scope = (comp_flags >> SCOPE_OFFSET) & SCOPE_MASK;
         int only_flags = comp_flags & ((1 << SCOPE_OFFSET) - 1);
+        if (scope == CELL || only_flags & DEF_COMP_CELL) {
+            if (PySet_Add(inlined_cells, k) < 0) {
+                return 0;
+            }
+        }
         PyObject *existing = PyDict_GetItemWithError(ste->ste_symbols, k);
         if (existing == NULL && PyErr_Occurred()) {
             return 0;
@@ -609,17 +797,10 @@ inline_comprehension(PySTEntryObject *ste, PySTEntryObject *comp,
         }
         else {
             if (PyLong_AsLong(existing) & DEF_BOUND) {
-                // cell vars in comprehension that are locals in outer scope
-                // must be promoted to cell so u_cellvars isn't wrong
-                if (scope == CELL && ste->ste_type == FunctionBlock) {
-                    if (PySet_Add(promote_to_cell, k) < 0) {
-                        return 0;
-                    }
-                }
-
                 // free vars in comprehension that are locals in outer scope can
-                // now simply be locals, unless they are free in comp children
-                if (!is_free_in_any_child(comp, k)) {
+                // now simply be locals, unless they are free in comp children,
+                // or if the outer scope is a class block
+                if (!is_free_in_any_child(comp, k) && ste->ste_type != ClassBlock) {
                     if (PySet_Discard(comp_free, k) < 0) {
                         return 0;
                     }
@@ -641,7 +822,7 @@ inline_comprehension(PySTEntryObject *ste, PySTEntryObject *comp,
 */
 
 static int
-analyze_cells(PyObject *scopes, PyObject *free, PyObject *promote_to_cell)
+analyze_cells(PyObject *scopes, PyObject *free, PyObject *inlined_cells)
 {
     PyObject *name, *v, *v_cell;
     int success = 0;
@@ -656,8 +837,19 @@ analyze_cells(PyObject *scopes, PyObject *free, PyObject *promote_to_cell)
         scope = PyLong_AS_LONG(v);
         if (scope != LOCAL)
             continue;
-        if (!PySet_Contains(free, name) && !PySet_Contains(promote_to_cell, name))
-            continue;
+        int contains = PySet_Contains(free, name);
+        if (contains < 0) {
+            goto error;
+        }
+        if (!contains) {
+            contains = PySet_Contains(inlined_cells, name);
+            if (contains < 0) {
+                goto error;
+            }
+            if (!contains) {
+                continue;
+            }
+        }
         /* Replace LOCAL with CELL for this name, and remove
            from free. It is safe to replace the value of name
            in the dict, because it will not cause a resize.
@@ -682,6 +874,11 @@ drop_class_free(PySTEntryObject *ste, PyObject *free)
         return 0;
     if (res)
         ste->ste_needs_class_closure = 1;
+    res = PySet_Discard(free, &_Py_ID(__classdict__));
+    if (res < 0)
+        return 0;
+    if (res)
+        ste->ste_needs_classdict = 1;
     return 1;
 }
 
@@ -691,7 +888,8 @@ drop_class_free(PySTEntryObject *ste, PyObject *free)
 */
 static int
 update_symbols(PyObject *symbols, PyObject *scopes,
-               PyObject *bound, PyObject *free, int classflag)
+               PyObject *bound, PyObject *free,
+               PyObject *inlined_cells, int classflag)
 {
     PyObject *name = NULL, *itr = NULL;
     PyObject *v = NULL, *v_scope = NULL, *v_new = NULL, *v_free = NULL;
@@ -702,6 +900,13 @@ update_symbols(PyObject *symbols, PyObject *scopes,
         long scope, flags;
         assert(PyLong_Check(v));
         flags = PyLong_AS_LONG(v);
+        int contains = PySet_Contains(inlined_cells, name);
+        if (contains < 0) {
+            return 0;
+        }
+        if (contains) {
+            flags |= DEF_COMP_CELL;
+        }
         v_scope = PyDict_GetItemWithError(scopes, name);
         assert(v_scope && PyLong_Check(v_scope));
         scope = PyLong_AS_LONG(v_scope);
@@ -736,8 +941,7 @@ update_symbols(PyObject *symbols, PyObject *scopes,
                the class that has the same name as a local
                or global in the class scope.
             */
-            if  (classflag &&
-                 PyLong_AS_LONG(v) & (DEF_BOUND | DEF_GLOBAL)) {
+            if  (classflag) {
                 long flags = PyLong_AS_LONG(v) | DEF_FREE_CLASS;
                 v_new = PyLong_FromLong(flags);
                 if (!v_new) {
@@ -757,9 +961,15 @@ update_symbols(PyObject *symbols, PyObject *scopes,
             goto error;
         }
         /* Handle global symbol */
-        if (bound && !PySet_Contains(bound, name)) {
-            Py_DECREF(name);
-            continue;       /* it's a global */
+        if (bound) {
+            int contains = PySet_Contains(bound, name);
+            if (contains < 0) {
+                goto error;
+            }
+            if (!contains) {
+                Py_DECREF(name);
+                continue;       /* it's a global */
+            }
         }
         /* Propagate new free symbol up the lexical stack */
         if (PyDict_SetItem(symbols, name, v_free) < 0) {
@@ -799,14 +1009,16 @@ update_symbols(PyObject *symbols, PyObject *scopes,
 
 static int
 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
-                    PyObject *global, PyObject **child_free);
+                    PyObject *global, PyObject *type_params,
+                    PySTEntryObject *class_entry, PyObject **child_free);
 
 static int
 analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
-              PyObject *global)
+              PyObject *global, PyObject *type_params,
+              PySTEntryObject *class_entry)
 {
     PyObject *name, *v, *local = NULL, *scopes = NULL, *newbound = NULL;
-    PyObject *newglobal = NULL, *newfree = NULL, *promote_to_cell = NULL;
+    PyObject *newglobal = NULL, *newfree = NULL, *inlined_cells = NULL;
     PyObject *temp;
     int success = 0;
     Py_ssize_t i, pos = 0;
@@ -838,8 +1050,8 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
     newbound = PySet_New(NULL);
     if (!newbound)
         goto error;
-    promote_to_cell = PySet_New(NULL);
-    if (!promote_to_cell)
+    inlined_cells = PySet_New(NULL);
+    if (!inlined_cells)
         goto error;
 
     /* Class namespace has no effect on names visible in
@@ -865,14 +1077,14 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
     while (PyDict_Next(ste->ste_symbols, &pos, &name, &v)) {
         long flags = PyLong_AS_LONG(v);
         if (!analyze_name(ste, scopes, name, flags,
-                          bound, local, free, global))
+                          bound, local, free, global, type_params, class_entry))
             goto error;
     }
 
     /* Populate global and bound sets to be passed to children. */
     if (ste->ste_type != ClassBlock) {
         /* Add function locals to bound set */
-        if (ste->ste_type == FunctionBlock) {
+        if (_PyST_IsFunctionLike(ste)) {
             temp = PyNumber_InPlaceOr(newbound, local);
             if (!temp)
                 goto error;
@@ -892,9 +1104,11 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
         Py_DECREF(temp);
     }
     else {
-        /* Special-case __class__ */
+        /* Special-case __class__ and __classdict__ */
         if (PySet_Add(newbound, &_Py_ID(__class__)) < 0)
             goto error;
+        if (PySet_Add(newbound, &_Py_ID(__classdict__)) < 0)
+            goto error;
     }
 
     /* Recursively call analyze_child_block() on each child block.
@@ -910,18 +1124,28 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
         assert(c && PySTEntry_Check(c));
         entry = (PySTEntryObject*)c;
 
+        PySTEntryObject *new_class_entry = NULL;
+        if (entry->ste_can_see_class_scope) {
+            if (ste->ste_type == ClassBlock) {
+                new_class_entry = ste;
+            }
+            else if (class_entry) {
+                new_class_entry = class_entry;
+            }
+        }
+
         // we inline all non-generator-expression comprehensions
         int inline_comp =
             entry->ste_comprehension &&
             !entry->ste_generator;
 
         if (!analyze_child_block(entry, newbound, newfree, newglobal,
-                                 &child_free))
+                                 type_params, new_class_entry, &child_free))
         {
             goto error;
         }
         if (inline_comp) {
-            if (!inline_comprehension(ste, entry, scopes, child_free, promote_to_cell)) {
+            if (!inline_comprehension(ste, entry, scopes, child_free, inlined_cells)) {
                 Py_DECREF(child_free);
                 goto error;
             }
@@ -952,13 +1176,13 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
     }
 
     /* Check if any local variables must be converted to cell variables */
-    if (ste->ste_type == FunctionBlock && !analyze_cells(scopes, newfree, promote_to_cell))
+    if (_PyST_IsFunctionLike(ste) && !analyze_cells(scopes, newfree, inlined_cells))
         goto error;
     else if (ste->ste_type == ClassBlock && !drop_class_free(ste, newfree))
         goto error;
     /* Records the results of the analysis in the symbol table entry */
-    if (!update_symbols(ste->ste_symbols, scopes, bound, newfree,
-                        ste->ste_type == ClassBlock))
+    if (!update_symbols(ste->ste_symbols, scopes, bound, newfree, inlined_cells,
+                        (ste->ste_type == ClassBlock) || ste->ste_can_see_class_scope))
         goto error;
 
     temp = PyNumber_InPlaceOr(free, newfree);
@@ -972,7 +1196,7 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
     Py_XDECREF(newbound);
     Py_XDECREF(newglobal);
     Py_XDECREF(newfree);
-    Py_XDECREF(promote_to_cell);
+    Py_XDECREF(inlined_cells);
     if (!success)
         assert(PyErr_Occurred());
     return success;
@@ -980,9 +1204,11 @@ analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
 
 static int
 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
-                    PyObject *global, PyObject** child_free)
+                    PyObject *global, PyObject *type_params,
+                    PySTEntryObject *class_entry, PyObject** child_free)
 {
     PyObject *temp_bound = NULL, *temp_global = NULL, *temp_free = NULL;
+    PyObject *temp_type_params = NULL;
 
     /* Copy the bound/global/free sets.
 
@@ -1000,24 +1226,30 @@ analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
     temp_global = PySet_New(global);
     if (!temp_global)
         goto error;
+    temp_type_params = PySet_New(type_params);
+    if (!temp_type_params)
+        goto error;
 
-    if (!analyze_block(entry, temp_bound, temp_free, temp_global))
+    if (!analyze_block(entry, temp_bound, temp_free, temp_global,
+                       temp_type_params, class_entry))
         goto error;
     *child_free = temp_free;
     Py_DECREF(temp_bound);
     Py_DECREF(temp_global);
+    Py_DECREF(temp_type_params);
     return 1;
  error:
     Py_XDECREF(temp_bound);
     Py_XDECREF(temp_free);
     Py_XDECREF(temp_global);
+    Py_XDECREF(temp_type_params);
     return 0;
 }
 
 static int
 symtable_analyze(struct symtable *st)
 {
-    PyObject *free, *global;
+    PyObject *free, *global, *type_params;
     int r;
 
     free = PySet_New(NULL);
@@ -1028,9 +1260,16 @@ symtable_analyze(struct symtable *st)
         Py_DECREF(free);
         return 0;
     }
-    r = analyze_block(st->st_top, NULL, free, global);
+    type_params = PySet_New(NULL);
+    if (!type_params) {
+        Py_DECREF(free);
+        Py_DECREF(global);
+        return 0;
+    }
+    r = analyze_block(st->st_top, NULL, free, global, type_params, NULL);
     Py_DECREF(free);
     Py_DECREF(global);
+    Py_DECREF(type_params);
     return r;
 }
 
@@ -1133,6 +1372,13 @@ symtable_add_def_helper(struct symtable *st, PyObject *name, int flag, struct _s
                                              end_lineno, end_col_offset + 1);
             goto error;
         }
+        if ((flag & DEF_TYPE_PARAM) && (val & DEF_TYPE_PARAM)) {
+            PyErr_Format(PyExc_SyntaxError, DUPLICATE_TYPE_PARAM, name);
+            PyErr_RangedSyntaxLocationObject(st->st_filename,
+                                             lineno, col_offset + 1,
+                                             end_lineno, end_col_offset + 1);
+            goto error;
+        }
         val |= flag;
     }
     else if (PyErr_Occurred()) {
@@ -1204,6 +1450,65 @@ symtable_add_def(struct symtable *st, PyObject *name, int flag,
                         lineno, col_offset, end_lineno, end_col_offset);
 }
 
+static int
+symtable_enter_type_param_block(struct symtable *st, identifier name,
+                               void *ast, int has_defaults, int has_kwdefaults,
+                               enum _stmt_kind kind,
+                               int lineno, int col_offset,
+                               int end_lineno, int end_col_offset)
+{
+    _Py_block_ty current_type = st->st_cur->ste_type;
+    if(!symtable_enter_block(st, name, TypeParamBlock, ast, lineno,
+                             col_offset, end_lineno, end_col_offset)) {
+        return 0;
+    }
+    if (current_type == ClassBlock) {
+        st->st_cur->ste_can_see_class_scope = 1;
+        if (!symtable_add_def(st, &_Py_ID(__classdict__), USE, lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+    }
+    if (kind == ClassDef_kind) {
+        _Py_DECLARE_STR(type_params, ".type_params");
+        // It gets "set" when we create the type params tuple and
+        // "used" when we build up the bases.
+        if (!symtable_add_def(st, &_Py_STR(type_params), DEF_LOCAL,
+                              lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+        if (!symtable_add_def(st, &_Py_STR(type_params), USE,
+                              lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+        st->st_private = name;
+        // This is used for setting the generic base
+        _Py_DECLARE_STR(generic_base, ".generic_base");
+        if (!symtable_add_def(st, &_Py_STR(generic_base), DEF_LOCAL,
+                              lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+        if (!symtable_add_def(st, &_Py_STR(generic_base), USE,
+                              lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+    }
+    if (has_defaults) {
+        _Py_DECLARE_STR(defaults, ".defaults");
+        if (!symtable_add_def(st, &_Py_STR(defaults), DEF_PARAM,
+                              lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+    }
+    if (has_kwdefaults) {
+        _Py_DECLARE_STR(kwdefaults, ".kwdefaults");
+        if (!symtable_add_def(st, &_Py_STR(kwdefaults), DEF_PARAM,
+                              lineno, col_offset, end_lineno, end_col_offset)) {
+            return 0;
+        }
+    }
+    return 1;
+}
+
 /* VISIT, VISIT_SEQ and VIST_SEQ_TAIL take an ASDL type as their second argument.
    They use the ASDL name to synthesize the name of the C type and the visit
    function.
@@ -1275,6 +1580,17 @@ symtable_record_directive(struct symtable *st, identifier name, int lineno,
     return res == 0;
 }
 
+static int
+has_kwonlydefaults(asdl_arg_seq *kwonlyargs, asdl_expr_seq *kw_defaults)
+{
+    for (int i = 0; i < asdl_seq_LEN(kwonlyargs); i++) {
+        expr_ty default_ = asdl_seq_GET(kw_defaults, i);
+        if (default_) {
+            return 1;
+        }
+    }
+    return 0;
+}
 
 static int
 symtable_visit_stmt(struct symtable *st, stmt_ty s)
@@ -1292,11 +1608,24 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
             VISIT_SEQ(st, expr, s->v.FunctionDef.args->defaults);
         if (s->v.FunctionDef.args->kw_defaults)
             VISIT_SEQ_WITH_NULL(st, expr, s->v.FunctionDef.args->kw_defaults);
+        if (s->v.FunctionDef.decorator_list)
+            VISIT_SEQ(st, expr, s->v.FunctionDef.decorator_list);
+        if (asdl_seq_LEN(s->v.FunctionDef.type_params) > 0) {
+            if (!symtable_enter_type_param_block(
+                    st, s->v.FunctionDef.name,
+                    (void *)s->v.FunctionDef.type_params,
+                    s->v.FunctionDef.args->defaults != NULL,
+                    has_kwonlydefaults(s->v.FunctionDef.args->kwonlyargs,
+                                       s->v.FunctionDef.args->kw_defaults),
+                    s->kind,
+                    LOCATION(s))) {
+                VISIT_QUIT(st, 0);
+            }
+            VISIT_SEQ(st, type_param, s->v.FunctionDef.type_params);
+        }
         if (!symtable_visit_annotations(st, s, s->v.FunctionDef.args,
                                         s->v.FunctionDef.returns))
             VISIT_QUIT(st, 0);
-        if (s->v.FunctionDef.decorator_list)
-            VISIT_SEQ(st, expr, s->v.FunctionDef.decorator_list);
         if (!symtable_enter_block(st, s->v.FunctionDef.name,
                                   FunctionBlock, (void *)s,
                                   LOCATION(s)))
@@ -1305,25 +1634,85 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
         VISIT_SEQ(st, stmt, s->v.FunctionDef.body);
         if (!symtable_exit_block(st))
             VISIT_QUIT(st, 0);
+        if (asdl_seq_LEN(s->v.FunctionDef.type_params) > 0) {
+            if (!symtable_exit_block(st))
+                VISIT_QUIT(st, 0);
+        }
         break;
     case ClassDef_kind: {
         PyObject *tmp;
         if (!symtable_add_def(st, s->v.ClassDef.name, DEF_LOCAL, LOCATION(s)))
             VISIT_QUIT(st, 0);
-        VISIT_SEQ(st, expr, s->v.ClassDef.bases);
-        VISIT_SEQ(st, keyword, s->v.ClassDef.keywords);
         if (s->v.ClassDef.decorator_list)
             VISIT_SEQ(st, expr, s->v.ClassDef.decorator_list);
+        if (asdl_seq_LEN(s->v.ClassDef.type_params) > 0) {
+            if (!symtable_enter_type_param_block(st, s->v.ClassDef.name,
+                                                (void *)s->v.ClassDef.type_params,
+                                                false, false, s->kind,
+                                                LOCATION(s))) {
+                VISIT_QUIT(st, 0);
+            }
+            VISIT_SEQ(st, type_param, s->v.ClassDef.type_params);
+        }
+        VISIT_SEQ(st, expr, s->v.ClassDef.bases);
+        VISIT_SEQ(st, keyword, s->v.ClassDef.keywords);
         if (!symtable_enter_block(st, s->v.ClassDef.name, ClassBlock,
                                   (void *)s, s->lineno, s->col_offset,
                                   s->end_lineno, s->end_col_offset))
             VISIT_QUIT(st, 0);
         tmp = st->st_private;
         st->st_private = s->v.ClassDef.name;
+        if (asdl_seq_LEN(s->v.ClassDef.type_params) > 0) {
+            if (!symtable_add_def(st, &_Py_ID(__type_params__),
+                                  DEF_LOCAL, LOCATION(s))) {
+                VISIT_QUIT(st, 0);
+            }
+            _Py_DECLARE_STR(type_params, ".type_params");
+            if (!symtable_add_def(st, &_Py_STR(type_params),
+                                  USE, LOCATION(s))) {
+                VISIT_QUIT(st, 0);
+            }
+        }
         VISIT_SEQ(st, stmt, s->v.ClassDef.body);
         st->st_private = tmp;
         if (!symtable_exit_block(st))
             VISIT_QUIT(st, 0);
+        if (asdl_seq_LEN(s->v.ClassDef.type_params) > 0) {
+            if (!symtable_exit_block(st))
+                VISIT_QUIT(st, 0);
+        }
+        break;
+    }
+    case TypeAlias_kind: {
+        VISIT(st, expr, s->v.TypeAlias.name);
+        assert(s->v.TypeAlias.name->kind == Name_kind);
+        PyObject *name = s->v.TypeAlias.name->v.Name.id;
+        int is_in_class = st->st_cur->ste_type == ClassBlock;
+        int is_generic = asdl_seq_LEN(s->v.TypeAlias.type_params) > 0;
+        if (is_generic) {
+            if (!symtable_enter_type_param_block(
+                    st, name,
+                    (void *)s->v.TypeAlias.type_params,
+                    false, false, s->kind,
+                    LOCATION(s))) {
+                VISIT_QUIT(st, 0);
+            }
+            VISIT_SEQ(st, type_param, s->v.TypeAlias.type_params);
+        }
+        if (!symtable_enter_block(st, name, TypeAliasBlock,
+                                  (void *)s, LOCATION(s)))
+            VISIT_QUIT(st, 0);
+        st->st_cur->ste_can_see_class_scope = is_in_class;
+        if (is_in_class && !symtable_add_def(st, &_Py_ID(__classdict__), USE, LOCATION(s->v.TypeAlias.value))) {
+            VISIT_QUIT(st, 0);
+        }
+        VISIT(st, expr, s->v.TypeAlias.value);
+        if (!symtable_exit_block(st))
+            VISIT_QUIT(st, 0);
+        if (is_generic) {
+            if (!symtable_exit_block(st))
+                VISIT_QUIT(st, 0);
+        }
         break;
     }
     case Return_kind:
@@ -1420,14 +1809,14 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
         break;
     case Try_kind:
         VISIT_SEQ(st, stmt, s->v.Try.body);
-        VISIT_SEQ(st, stmt, s->v.Try.orelse);
         VISIT_SEQ(st, excepthandler, s->v.Try.handlers);
+        VISIT_SEQ(st, stmt, s->v.Try.orelse);
         VISIT_SEQ(st, stmt, s->v.Try.finalbody);
         break;
     case TryStar_kind:
         VISIT_SEQ(st, stmt, s->v.TryStar.body);
-        VISIT_SEQ(st, stmt, s->v.TryStar.orelse);
         VISIT_SEQ(st, excepthandler, s->v.TryStar.handlers);
+        VISIT_SEQ(st, stmt, s->v.TryStar.orelse);
         VISIT_SEQ(st, stmt, s->v.TryStar.finalbody);
         break;
     case Assert_kind:
@@ -1532,11 +1921,24 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
         if (s->v.AsyncFunctionDef.args->kw_defaults)
             VISIT_SEQ_WITH_NULL(st, expr,
                                 s->v.AsyncFunctionDef.args->kw_defaults);
+        if (s->v.AsyncFunctionDef.decorator_list)
+            VISIT_SEQ(st, expr, s->v.AsyncFunctionDef.decorator_list);
+        if (asdl_seq_LEN(s->v.AsyncFunctionDef.type_params) > 0) {
+            if (!symtable_enter_type_param_block(
+                    st, s->v.AsyncFunctionDef.name,
+                    (void *)s->v.AsyncFunctionDef.type_params,
+                    s->v.AsyncFunctionDef.args->defaults != NULL,
+                    has_kwonlydefaults(s->v.AsyncFunctionDef.args->kwonlyargs,
+                                       s->v.AsyncFunctionDef.args->kw_defaults),
+                    s->kind,
+                    LOCATION(s))) {
+                VISIT_QUIT(st, 0);
+            }
+            VISIT_SEQ(st, type_param, s->v.AsyncFunctionDef.type_params);
+        }
         if (!symtable_visit_annotations(st, s, s->v.AsyncFunctionDef.args,
                                         s->v.AsyncFunctionDef.returns))
             VISIT_QUIT(st, 0);
-        if (s->v.AsyncFunctionDef.decorator_list)
-            VISIT_SEQ(st, expr, s->v.AsyncFunctionDef.decorator_list);
         if (!symtable_enter_block(st, s->v.AsyncFunctionDef.name,
                                   FunctionBlock, (void *)s,
                                   s->lineno, s->col_offset,
@@ -1547,6 +1949,10 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
         VISIT_SEQ(st, stmt, s->v.AsyncFunctionDef.body);
         if (!symtable_exit_block(st))
             VISIT_QUIT(st, 0);
+        if (asdl_seq_LEN(s->v.AsyncFunctionDef.type_params) > 0) {
+            if (!symtable_exit_block(st))
+                VISIT_QUIT(st, 0);
+        }
         break;
     case AsyncWith_kind:
         VISIT_SEQ(st, withitem, s->v.AsyncWith.items);
@@ -1621,9 +2027,27 @@ symtable_extend_namedexpr_scope(struct symtable *st, expr_ty e)
 
             return symtable_add_def_helper(st, target_name, DEF_GLOBAL, ste, LOCATION(e));
         }
-        /* Disallow usage in ClassBlock */
-        if (ste->ste_type == ClassBlock) {
-            PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_CLASS);
+        /* Disallow usage in ClassBlock and type scopes */
+        if (ste->ste_type == ClassBlock ||
+            ste->ste_type == TypeParamBlock ||
+            ste->ste_type == TypeAliasBlock ||
+            ste->ste_type == TypeVarBoundBlock) {
+            switch (ste->ste_type) {
+                case ClassBlock:
+                    PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_CLASS);
+                    break;
+                case TypeParamBlock:
+                    PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_TYPEPARAM);
+                    break;
+                case TypeAliasBlock:
+                    PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_TYPEALIAS);
+                    break;
+                case TypeVarBoundBlock:
+                    PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_TYPEVAR_BOUND);
+                    break;
+                default:
+                    Py_UNREACHABLE();
+            }
             PyErr_RangedSyntaxLocationObject(st->st_filename,
                                               e->lineno,
                                               e->col_offset + 1,
@@ -1633,7 +2057,7 @@ symtable_extend_namedexpr_scope(struct symtable *st, expr_ty e)
         }
     }
 
-    /* We should always find either a FunctionBlock, ModuleBlock or ClassBlock
+    /* We should always find either a function-like block, ModuleBlock or ClassBlock
        and should never fall to this case
     */
     Py_UNREACHABLE();
@@ -1690,6 +2114,17 @@ symtable_visit_expr(struct symtable *st, expr_ty e)
         VISIT(st, expr, e->v.UnaryOp.operand);
         break;
     case Lambda_kind: {
+        if (st->st_cur->ste_can_see_class_scope) {
+            // gh-109118
+            PyErr_Format(PyExc_SyntaxError,
+                         "Cannot use lambda in annotation scope within class scope");
+            PyErr_RangedSyntaxLocationObject(st->st_filename,
+                                              e->lineno,
+                                              e->col_offset + 1,
+                                              e->end_lineno,
+                                              e->end_col_offset + 1);
+            VISIT_QUIT(st, 0);
+        }
         if (e->v.Lambda.args->defaults)
             VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);
         if (e->v.Lambda.args->kw_defaults)
@@ -1806,7 +2241,7 @@ symtable_visit_expr(struct symtable *st, expr_ty e)
             VISIT_QUIT(st, 0);
         /* Special-case super: it counts as a use of __class__ */
         if (e->v.Name.ctx == Load &&
-            st->st_cur->ste_type == FunctionBlock &&
+            _PyST_IsFunctionLike(st->st_cur) &&
             _PyUnicode_EqualToASCIIString(e->v.Name.id, "super")) {
             if (!symtable_add_def(st, &_Py_ID(__class__), USE, LOCATION(e)))
                 VISIT_QUIT(st, 0);
@@ -1823,6 +2258,45 @@ symtable_visit_expr(struct symtable *st, expr_ty e)
     VISIT_QUIT(st, 1);
 }
 
+static int
+symtable_visit_type_param(struct symtable *st, type_param_ty tp)
+{
+    if (++st->recursion_depth > st->recursion_limit) {
+        PyErr_SetString(PyExc_RecursionError,
+                        "maximum recursion depth exceeded during compilation");
+        VISIT_QUIT(st, 0);
+    }
+    switch(tp->kind) {
+    case TypeVar_kind:
+        if (!symtable_add_def(st, tp->v.TypeVar.name, DEF_TYPE_PARAM | DEF_LOCAL, LOCATION(tp)))
+            VISIT_QUIT(st, 0);
+        if (tp->v.TypeVar.bound) {
+            int is_in_class = st->st_cur->ste_can_see_class_scope;
+            if (!symtable_enter_block(st, tp->v.TypeVar.name,
+                                      TypeVarBoundBlock, (void *)tp,
+                                      LOCATION(tp)))
+                VISIT_QUIT(st, 0);
+            st->st_cur->ste_can_see_class_scope = is_in_class;
+            if (is_in_class && !symtable_add_def(st, &_Py_ID(__classdict__), USE, LOCATION(tp->v.TypeVar.bound))) {
+                VISIT_QUIT(st, 0);
+            }
+            VISIT(st, expr, tp->v.TypeVar.bound);
+            if (!symtable_exit_block(st))
+                VISIT_QUIT(st, 0);
+        }
+        break;
+    case TypeVarTuple_kind:
+        if (!symtable_add_def(st, tp->v.TypeVarTuple.name, DEF_TYPE_PARAM | DEF_LOCAL, LOCATION(tp)))
+            VISIT_QUIT(st, 0);
+        break;
+    case ParamSpec_kind:
+        if (!symtable_add_def(st, tp->v.ParamSpec.name, DEF_TYPE_PARAM | DEF_LOCAL, LOCATION(tp)))
+            VISIT_QUIT(st, 0);
+        break;
+    }
+    VISIT_QUIT(st, 1);
+}
+
 static int
 symtable_visit_pattern(struct symtable *st, pattern_ty p)
 {
@@ -2100,6 +2574,18 @@ symtable_handle_comprehension(struct symtable *st, expr_ty e,
                               identifier scope_name, asdl_comprehension_seq *generators,
                               expr_ty elt, expr_ty value)
 {
+    if (st->st_cur->ste_can_see_class_scope) {
+        // gh-109118
+        PyErr_Format(PyExc_SyntaxError,
+                     "Cannot use comprehension in annotation scope within class scope");
+        PyErr_RangedSyntaxLocationObject(st->st_filename,
+                                         e->lineno,
+                                         e->col_offset + 1,
+                                         e->end_lineno,
+                                         e->end_col_offset + 1);
+        VISIT_QUIT(st, 0);
+    }
+
     int is_generator = (e->kind == GeneratorExp_kind);
     comprehension_ty outermost = ((comprehension_ty)
                                     asdl_seq_GET(generators, 0));
@@ -2194,11 +2680,18 @@ symtable_visit_dictcomp(struct symtable *st, expr_ty e)
 static int
 symtable_raise_if_annotation_block(struct symtable *st, const char *name, expr_ty e)
 {
-    if (st->st_cur->ste_type != AnnotationBlock) {
+    enum _block_type type = st->st_cur->ste_type;
+    if (type == AnnotationBlock)
+        PyErr_Format(PyExc_SyntaxError, ANNOTATION_NOT_ALLOWED, name);
+    else if (type == TypeVarBoundBlock)
+        PyErr_Format(PyExc_SyntaxError, TYPEVAR_BOUND_NOT_ALLOWED, name);
+    else if (type == TypeAliasBlock)
+        PyErr_Format(PyExc_SyntaxError, TYPEALIAS_NOT_ALLOWED, name);
+    else if (type == TypeParamBlock)
+        PyErr_Format(PyExc_SyntaxError, TYPEPARAM_NOT_ALLOWED, name);
+    else
         return 1;
-    }
 
-    PyErr_Format(PyExc_SyntaxError, ANNOTATION_NOT_ALLOWED, name);
     PyErr_RangedSyntaxLocationObject(st->st_filename,
                                      e->lineno,
                                      e->col_offset + 1,
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 894a3e8a98fd8a..57dc4a1226ce75 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -17,29 +17,36 @@ Data members:
 #include "Python.h"
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _PyEval_SetAsyncGenFinalizer()
+#include "pycore_dict.h"          // _PyDict_GetItemWithError()
 #include "pycore_frame.h"         // _PyInterpreterFrame
 #include "pycore_initconfig.h"    // _PyStatus_EXCEPTION()
 #include "pycore_long.h"          // _PY_LONG_MAX_STR_DIGITS_THRESHOLD
+#include "pycore_modsupport.h"    // _PyModule_CreateInitialized()
 #include "pycore_namespace.h"     // _PyNamespace_New()
-#include "pycore_object.h"        // _PyObject_IS_GC()
+#include "pycore_object.h"        // _PyObject_DebugTypeStats()
 #include "pycore_pathconfig.h"    // _PyPathConfig_ComputeSysPath0()
 #include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
 #include "pycore_pylifecycle.h"   // _PyErr_WriteUnraisableDefaultHook()
 #include "pycore_pymath.h"        // _PY_SHORT_FLOAT_REPR
 #include "pycore_pymem.h"         // _PyMem_SetDefaultAllocator()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_pystats.h"       // _Py_PrintSpecializationStats()
 #include "pycore_structseq.h"     // _PyStructSequence_InitBuiltinWithFlags()
+#include "pycore_sysmodule.h"     // export _PySys_GetSizeOf()
 #include "pycore_tuple.h"         // _PyTuple_FromArray()
 
 #include "frameobject.h"          // PyFrame_FastToLocalsWithError()
-#include "pydtrace.h"
+#include "pydtrace.h"             // PyDTrace_AUDIT()
 #include "osdefs.h"               // DELIM
 #include "stdlib_module_names.h"  // _Py_stdlib_module_names
-#include <locale.h>
+
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // getpid()
+#endif
 
 #ifdef MS_WINDOWS
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
 #endif /* MS_WINDOWS */
 
 #ifdef MS_COREDLL
@@ -49,7 +56,11 @@ extern const char *PyWin_DLLVersionString;
 #endif
 
 #ifdef __EMSCRIPTEN__
-#include <emscripten.h>
+#  include <emscripten.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+#  include <fcntl.h>
 #endif
 
 /*[clinic input]
@@ -59,6 +70,7 @@ module sys
 
 #include "clinic/sysmodule.c.h"
 
+
 PyObject *
 _PySys_GetAttr(PyThreadState *tstate, PyObject *name)
 {
@@ -81,7 +93,12 @@ _PySys_GetObject(PyInterpreterState *interp, const char *name)
     if (sysdict == NULL) {
         return NULL;
     }
-    return _PyDict_GetItemStringWithError(sysdict, name);
+    PyObject *value;
+    if (PyDict_GetItemStringRef(sysdict, name, &value) != 1) {
+        return NULL;
+    }
+    Py_DECREF(value);  // return a borrowed reference
+    return value;
 }
 
 PyObject *
@@ -93,6 +110,9 @@ PySys_GetObject(const char *name)
     PyObject *value = _PySys_GetObject(tstate->interp, name);
     /* XXX Suppress a new exception if it was raised and restore
      * the old one. */
+    if (_PyErr_Occurred(tstate)) {
+        PyErr_FormatUnraisable("Exception ignored in PySys_GetObject()");
+    }
     _PyErr_SetRaisedException(tstate, exc);
     return value;
 }
@@ -105,11 +125,9 @@ sys_set_object(PyInterpreterState *interp, PyObject *key, PyObject *v)
     }
     PyObject *sd = interp->sysdict;
     if (v == NULL) {
-        v = _PyDict_Pop(sd, key, Py_None);
-        if (v == NULL) {
+        if (PyDict_Pop(sd, key, NULL) < 0) {
             return -1;
         }
-        Py_DECREF(v);
         return 0;
     }
     else {
@@ -164,7 +182,7 @@ should_audit(PyInterpreterState *interp)
     if (!interp) {
         return 0;
     }
-    return (interp->runtime->audit_hook_head
+    return (interp->runtime->audit_hooks.head
             || interp->audit_hooks
             || PyDTrace_AUDIT_ENABLED());
 }
@@ -174,9 +192,7 @@ static int
 sys_audit_tstate(PyThreadState *ts, const char *event,
                  const char *argFormat, va_list vargs)
 {
-    /* N format is inappropriate, because you do not know
-       whether the reference is consumed by the call.
-       Assert rather than exception for perf reasons */
+    assert(event != NULL);
     assert(!argFormat || !strchr(argFormat, 'N'));
 
     if (!ts) {
@@ -207,7 +223,7 @@ sys_audit_tstate(PyThreadState *ts, const char *event,
 
     /* Initialize event args now */
     if (argFormat && argFormat[0]) {
-        eventArgs = _Py_VaBuildValue_SizeT(argFormat, vargs);
+        eventArgs = Py_VaBuildValue(argFormat, vargs);
         if (eventArgs && !PyTuple_Check(eventArgs)) {
             PyObject *argTuple = PyTuple_Pack(1, eventArgs);
             Py_SETREF(eventArgs, argTuple);
@@ -220,8 +236,11 @@ sys_audit_tstate(PyThreadState *ts, const char *event,
         goto exit;
     }
 
-    /* Call global hooks */
-    _Py_AuditHookEntry *e = is->runtime->audit_hook_head;
+    /* Call global hooks
+     *
+     * We don't worry about any races on hooks getting added,
+     * since that would not leave is in an inconsistent state. */
+    _Py_AuditHookEntry *e = is->runtime->audit_hooks.head;
     for (; e; e = e->next) {
         if (e->hookCFunction(event, eventArgs, e->userData) < 0) {
             goto exit;
@@ -249,7 +268,7 @@ sys_audit_tstate(PyThreadState *ts, const char *event,
         PyThreadState_EnterTracing(ts);
         while ((hook = PyIter_Next(hooks)) != NULL) {
             PyObject *o;
-            int canTrace = _PyObject_LookupAttr(hook, &_Py_ID(__cantrace__), &o);
+            int canTrace = PyObject_GetOptionalAttr(hook, &_Py_ID(__cantrace__), &o);
             if (o) {
                 canTrace = PyObject_IsTrue(o);
                 Py_DECREF(o);
@@ -261,7 +280,7 @@ sys_audit_tstate(PyThreadState *ts, const char *event,
                 PyThreadState_LeaveTracing(ts);
             }
             PyObject* args[2] = {eventName, eventArgs};
-            o = _PyObject_FastCallTstate(ts, hook, args, 2);
+            o = _PyObject_VectorcallTstate(ts, hook, args, 2, NULL);
             if (canTrace) {
                 PyThreadState_EnterTracing(ts);
             }
@@ -318,6 +337,21 @@ PySys_Audit(const char *event, const char *argFormat, ...)
     return res;
 }
 
+int
+PySys_AuditTuple(const char *event, PyObject *args)
+{
+    if (args == NULL) {
+        return PySys_Audit(event, NULL);
+    }
+
+    if (!PyTuple_Check(args)) {
+        PyErr_Format(PyExc_TypeError, "args must be tuple, got %s",
+                     Py_TYPE(args)->tp_name);
+        return -1;
+    }
+    return PySys_Audit(event, "O", args);
+}
+
 /* We expose this function primarily for our own cleanup during
  * finalization. In general, it should not need to be called,
  * and as such the function is not exported.
@@ -332,6 +366,7 @@ _PySys_ClearAuditHooks(PyThreadState *ts)
     }
 
     _PyRuntimeState *runtime = ts->interp->runtime;
+    /* The hooks are global so we have to check for runtime finalization. */
     PyThreadState *finalizing = _PyRuntimeState_GetFinalizing(runtime);
     assert(finalizing == ts);
     if (finalizing != ts) {
@@ -348,8 +383,12 @@ _PySys_ClearAuditHooks(PyThreadState *ts)
     _PySys_Audit(ts, "cpython._PySys_ClearAuditHooks", NULL);
     _PyErr_Clear(ts);
 
-    _Py_AuditHookEntry *e = runtime->audit_hook_head, *n;
-    runtime->audit_hook_head = NULL;
+    /* We don't worry about the very unlikely race right here,
+     * since it's entirely benign.  Nothing else removes entries
+     * from the list and adding an entry right now would not cause
+     * any trouble. */
+    _Py_AuditHookEntry *e = runtime->audit_hooks.head, *n;
+    runtime->audit_hooks.head = NULL;
     while (e) {
         n = e->next;
         PyMem_RawFree(e);
@@ -357,6 +396,22 @@ _PySys_ClearAuditHooks(PyThreadState *ts)
     }
 }
 
+static void
+add_audit_hook_entry_unlocked(_PyRuntimeState *runtime,
+                              _Py_AuditHookEntry *entry)
+{
+    if (runtime->audit_hooks.head == NULL) {
+        runtime->audit_hooks.head = entry;
+    }
+    else {
+        _Py_AuditHookEntry *last = runtime->audit_hooks.head;
+        while (last->next) {
+            last = last->next;
+        }
+        last->next = entry;
+    }
+}
+
 int
 PySys_AddAuditHook(Py_AuditHookFunction hook, void *userData)
 {
@@ -384,29 +439,22 @@ PySys_AddAuditHook(Py_AuditHookFunction hook, void *userData)
         }
     }
 
-    _Py_AuditHookEntry *e = runtime->audit_hook_head;
-    if (!e) {
-        e = (_Py_AuditHookEntry*)PyMem_RawMalloc(sizeof(_Py_AuditHookEntry));
-        runtime->audit_hook_head = e;
-    } else {
-        while (e->next) {
-            e = e->next;
-        }
-        e = e->next = (_Py_AuditHookEntry*)PyMem_RawMalloc(
+    _Py_AuditHookEntry *e = (_Py_AuditHookEntry*)PyMem_RawMalloc(
             sizeof(_Py_AuditHookEntry));
-    }
-
     if (!e) {
         if (tstate != NULL) {
             _PyErr_NoMemory(tstate);
         }
         return -1;
     }
-
     e->next = NULL;
     e->hookCFunction = (Py_AuditHookFunction)hook;
     e->userData = userData;
 
+    PyMutex_Lock(&runtime->audit_hooks.mutex);
+    add_audit_hook_entry_unlocked(runtime, e);
+    PyMutex_Unlock(&runtime->audit_hooks.mutex);
+
     return 0;
 }
 
@@ -469,6 +517,9 @@ sys_audit(PyObject *self, PyObject *const *args, Py_ssize_t argc)
         return NULL;
     }
 
+    assert(args[0] != NULL);
+    assert(PyUnicode_Check(args[0]));
+
     if (!should_audit(tstate->interp)) {
         Py_RETURN_NONE;
     }
@@ -629,7 +680,7 @@ sys_displayhook_unencodable(PyObject *outf, PyObject *o)
     if (encoded == NULL)
         goto error;
 
-    if (_PyObject_LookupAttr(outf, &_Py_ID(buffer), &buffer) < 0) {
+    if (PyObject_GetOptionalAttr(outf, &_Py_ID(buffer), &buffer) < 0) {
         Py_DECREF(encoded);
         goto error;
     }
@@ -836,6 +887,13 @@ sys_exit_impl(PyObject *module, PyObject *status)
 }
 
 
+static PyObject *
+get_utf8_unicode(void)
+{
+    _Py_DECLARE_STR(utf_8, "utf-8");
+    PyObject *ret = &_Py_STR(utf_8);
+    return Py_NewRef(ret);
+}
 
 /*[clinic input]
 sys.getdefaultencoding
@@ -847,9 +905,7 @@ static PyObject *
 sys_getdefaultencoding_impl(PyObject *module)
 /*[clinic end generated code: output=256d19dfcc0711e6 input=d416856ddbef6909]*/
 {
-    _Py_DECLARE_STR(utf_8, "utf-8");
-    PyObject *ret = &_Py_STR(utf_8);
-    return Py_NewRef(ret);
+    return get_utf8_unicode();
 }
 
 /*[clinic input]
@@ -864,7 +920,17 @@ sys_getfilesystemencoding_impl(PyObject *module)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
     const PyConfig *config = _PyInterpreterState_GetConfig(interp);
-    return PyUnicode_FromWideChar(config->filesystem_encoding, -1);
+
+    if (wcscmp(config->filesystem_encoding, L"utf-8") == 0) {
+        return get_utf8_unicode();
+    }
+
+    PyObject *u = PyUnicode_FromWideChar(config->filesystem_encoding, -1);
+    if (u == NULL) {
+        return NULL;
+    }
+    _PyUnicode_InternInPlace(interp, &u);
+    return u;
 }
 
 /*[clinic input]
@@ -879,7 +945,12 @@ sys_getfilesystemencodeerrors_impl(PyObject *module)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
     const PyConfig *config = _PyInterpreterState_GetConfig(interp);
-    return PyUnicode_FromWideChar(config->filesystem_errors, -1);
+    PyObject *u = PyUnicode_FromWideChar(config->filesystem_errors, -1);
+    if (u == NULL) {
+        return NULL;
+    }
+    _PyUnicode_InternInPlace(interp, &u);
+    return u;
 }
 
 /*[clinic input]
@@ -912,6 +983,23 @@ sys_intern_impl(PyObject *module, PyObject *s)
 }
 
 
+/*[clinic input]
+sys._is_interned -> bool
+
+  string: unicode
+  /
+
+Return True if the given string is "interned".
+[clinic start generated code]*/
+
+static int
+sys__is_interned_impl(PyObject *module, PyObject *string)
+/*[clinic end generated code: output=c3678267b4e9d7ed input=039843e17883b606]*/
+{
+    return PyUnicode_CHECK_INTERNED(string);
+}
+
+
 /*
  * Cached interned string objects used for calling the profile and
  * trace functions.
@@ -932,12 +1020,6 @@ static PyObject *
 call_trampoline(PyThreadState *tstate, PyObject* callback,
                 PyFrameObject *frame, int what, PyObject *arg)
 {
-
-    PyObject *stack[3];
-    stack[0] = (PyObject *)frame;
-    stack[1] = whatstrings[what];
-    stack[2] = (arg != NULL) ? arg : Py_None;
-
     /* Discard any previous modifications the frame's fast locals */
     if (frame->f_fast_as_locals) {
         if (PyFrame_FastToLocalsWithError(frame) < 0) {
@@ -946,13 +1028,13 @@ call_trampoline(PyThreadState *tstate, PyObject* callback,
     }
 
     /* call the Python-level function */
-    PyObject *result = _PyObject_FastCallTstate(tstate, callback, stack, 3);
-
-    PyFrame_LocalsToFast(frame, 1);
-    if (result == NULL) {
-        PyTraceBack_Here(frame);
+    if (arg == NULL) {
+        arg = Py_None;
     }
+    PyObject *args[3] = {(PyObject *)frame, whatstrings[what], arg};
+    PyObject *result = _PyObject_VectorcallTstate(tstate, callback, args, 3, NULL);
 
+    PyFrame_LocalsToFast(frame, 1);
     return result;
 }
 
@@ -1911,7 +1993,7 @@ sys__getframe_impl(PyObject *module, int depth)
 /*[clinic end generated code: output=d438776c04d59804 input=c1be8a6464b11ee5]*/
 {
     PyThreadState *tstate = _PyThreadState_GET();
-    _PyInterpreterFrame *frame = tstate->cframe->current_frame;
+    _PyInterpreterFrame *frame = tstate->current_frame;
 
     if (frame != NULL) {
         while (depth > 0) {
@@ -1987,11 +2069,6 @@ sys_call_tracing_impl(PyObject *module, PyObject *func, PyObject *funcargs)
     return _PyEval_CallTracing(func, funcargs);
 }
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /*[clinic input]
 sys._debugmallocstats
 
@@ -2020,10 +2097,6 @@ sys__debugmallocstats_impl(PyObject *module)
 extern PyObject *_Py_GetObjects(PyObject *, PyObject *);
 #endif
 
-#ifdef __cplusplus
-}
-#endif
-
 
 /*[clinic input]
 sys._clear_type_cache
@@ -2039,6 +2112,9 @@ sys__clear_type_cache_impl(PyObject *module)
     Py_RETURN_NONE;
 }
 
+/* Note that, for now, we do not have a per-interpreter equivalent
+  for sys.is_finalizing(). */
+
 /*[clinic input]
 sys.is_finalizing
 
@@ -2049,35 +2125,36 @@ static PyObject *
 sys_is_finalizing_impl(PyObject *module)
 /*[clinic end generated code: output=735b5ff7962ab281 input=f0df747a039948a5]*/
 {
-    return PyBool_FromLong(_Py_IsFinalizing());
+    return PyBool_FromLong(Py_IsFinalizing());
 }
 
+
 #ifdef Py_STATS
 /*[clinic input]
 sys._stats_on
 
-Turns on stats gathering (stats gathering is on by default).
+Turns on stats gathering (stats gathering is off by default).
 [clinic start generated code]*/
 
 static PyObject *
 sys__stats_on_impl(PyObject *module)
-/*[clinic end generated code: output=aca53eafcbb4d9fe input=8ddc6df94e484f3a]*/
+/*[clinic end generated code: output=aca53eafcbb4d9fe input=43b5bfe145299e55]*/
 {
-    _py_stats = &_py_stats_struct;
+    _Py_StatsOn();
     Py_RETURN_NONE;
 }
 
 /*[clinic input]
 sys._stats_off
 
-Turns off stats gathering (stats gathering is on by default).
+Turns off stats gathering (stats gathering is off by default).
 [clinic start generated code]*/
 
 static PyObject *
 sys__stats_off_impl(PyObject *module)
-/*[clinic end generated code: output=1534c1ee63812214 input=b3e50e71ecf29f66]*/
+/*[clinic end generated code: output=1534c1ee63812214 input=d1a84c60c56cbce2]*/
 {
-    _py_stats = NULL;
+    _Py_StatsOff();
     Py_RETURN_NONE;
 }
 
@@ -2096,21 +2173,23 @@ sys__stats_clear_impl(PyObject *module)
 }
 
 /*[clinic input]
-sys._stats_dump
+sys._stats_dump -> bool
 
 Dump stats to file, and clears the stats.
+
+Return False if no statistics were not dumped because stats gathering was off.
 [clinic start generated code]*/
 
-static PyObject *
+static int
 sys__stats_dump_impl(PyObject *module)
-/*[clinic end generated code: output=79f796fb2b4ddf05 input=92346f16d64f6f95]*/
+/*[clinic end generated code: output=6e346b4ba0de4489 input=31a489e39418b2a5]*/
 {
-    _Py_PrintSpecializationStats(1);
+    int res = _Py_PrintSpecializationStats(1);
     _Py_StatsClear();
-    Py_RETURN_NONE;
+    return res;
 }
+#endif   // Py_STATS
 
-#endif
 
 #ifdef ANDROID_API_LEVEL
 /*[clinic input]
@@ -2144,7 +2223,7 @@ sys_activate_stack_trampoline_impl(PyObject *module, const char *backend)
     if (strcmp(backend, "perf") == 0) {
         _PyPerf_Callbacks cur_cb;
         _PyPerfTrampoline_GetCallbacks(&cur_cb);
-        if (cur_cb.init_state != _Py_perfmap_callbacks.init_state) {
+        if (cur_cb.write_state != _Py_perfmap_callbacks.write_state) {
             if (_PyPerfTrampoline_SetCallbacks(&_Py_perfmap_callbacks) < 0 ) {
                 PyErr_SetString(PyExc_ValueError, "can't activate perf trampoline");
                 return NULL;
@@ -2224,7 +2303,7 @@ sys__getframemodulename_impl(PyObject *module, int depth)
     if (PySys_Audit("sys._getframemodulename", "i", depth) < 0) {
         return NULL;
     }
-    _PyInterpreterFrame *f = _PyThreadState_GET()->cframe->current_frame;
+    _PyInterpreterFrame *f = _PyThreadState_GET()->current_frame;
     while (f && (_PyFrame_IsIncomplete(f) || depth-- > 0)) {
         f = f->previous;
     }
@@ -2239,6 +2318,127 @@ sys__getframemodulename_impl(PyObject *module, int depth)
     return Py_NewRef(r);
 }
 
+/*[clinic input]
+sys._get_cpu_count_config -> int
+
+Private function for getting PyConfig.cpu_count
+[clinic start generated code]*/
+
+static int
+sys__get_cpu_count_config_impl(PyObject *module)
+/*[clinic end generated code: output=36611bb5efad16dc input=523e1ade2204084e]*/
+{
+    const PyConfig *config = _Py_GetConfig();
+    return config->cpu_count;
+}
+
+static PerfMapState perf_map_state;
+
+PyAPI_FUNC(int) PyUnstable_PerfMapState_Init(void) {
+#ifndef MS_WINDOWS
+    char filename[100];
+    pid_t pid = getpid();
+    // Use nofollow flag to prevent symlink attacks.
+    int flags = O_WRONLY | O_CREAT | O_APPEND | O_NOFOLLOW;
+#ifdef O_CLOEXEC
+    flags |= O_CLOEXEC;
+#endif
+    snprintf(filename, sizeof(filename) - 1, "/tmp/perf-%jd.map",
+                (intmax_t)pid);
+    int fd = open(filename, flags, 0600);
+    if (fd == -1) {
+        return -1;
+    }
+    else{
+        perf_map_state.perf_map = fdopen(fd, "a");
+        if (perf_map_state.perf_map == NULL) {
+            close(fd);
+            return -1;
+        }
+    }
+    perf_map_state.map_lock = PyThread_allocate_lock();
+    if (perf_map_state.map_lock == NULL) {
+        fclose(perf_map_state.perf_map);
+        return -2;
+    }
+#endif
+    return 0;
+}
+
+PyAPI_FUNC(int) PyUnstable_WritePerfMapEntry(
+    const void *code_addr,
+    unsigned int code_size,
+    const char *entry_name
+) {
+#ifndef MS_WINDOWS
+    if (perf_map_state.perf_map == NULL) {
+        int ret = PyUnstable_PerfMapState_Init();
+        if (ret != 0){
+            return ret;
+        }
+    }
+    PyThread_acquire_lock(perf_map_state.map_lock, 1);
+    fprintf(perf_map_state.perf_map, "%" PRIxPTR " %x %s\n", (uintptr_t) code_addr, code_size, entry_name);
+    fflush(perf_map_state.perf_map);
+    PyThread_release_lock(perf_map_state.map_lock);
+#endif
+    return 0;
+}
+
+PyAPI_FUNC(void) PyUnstable_PerfMapState_Fini(void) {
+#ifndef MS_WINDOWS
+    if (perf_map_state.perf_map != NULL) {
+        // close the file
+        PyThread_acquire_lock(perf_map_state.map_lock, 1);
+        fclose(perf_map_state.perf_map);
+        PyThread_release_lock(perf_map_state.map_lock);
+
+        // clean up the lock and state
+        PyThread_free_lock(perf_map_state.map_lock);
+        perf_map_state.perf_map = NULL;
+    }
+#endif
+}
+
+PyAPI_FUNC(int) PyUnstable_CopyPerfMapFile(const char* parent_filename) {
+#ifndef MS_WINDOWS
+    FILE* from = fopen(parent_filename, "r");
+    if (!from) {
+        return -1;
+    }
+    if (perf_map_state.perf_map == NULL) {
+        int ret = PyUnstable_PerfMapState_Init();
+        if (ret != 0) {
+            return ret;
+        }
+    }
+    char buf[4096];
+    PyThread_acquire_lock(perf_map_state.map_lock, 1);
+    int fflush_result = 0, result = 0;
+    while (1) {
+        size_t bytes_read = fread(buf, 1, sizeof(buf), from);
+        size_t bytes_written = fwrite(buf, 1, bytes_read, perf_map_state.perf_map);
+        fflush_result = fflush(perf_map_state.perf_map);
+        if (fflush_result != 0 || bytes_read == 0 || bytes_written < bytes_read) {
+            result = -1;
+            goto close_and_release;
+        }
+        if (bytes_read < sizeof(buf) && feof(from)) {
+            goto close_and_release;
+        }
+    }
+close_and_release:
+    fclose(from);
+    PyThread_release_lock(perf_map_state.map_lock);
+    return result;
+#endif
+    return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
 
 static PyMethodDef sys_methods[] = {
     /* Might as well keep this in alphabetic order */
@@ -2273,6 +2473,7 @@ static PyMethodDef sys_methods[] = {
     SYS_GETWINDOWSVERSION_METHODDEF
     SYS__ENABLELEGACYWINDOWSFSENCODING_METHODDEF
     SYS_INTERN_METHODDEF
+    SYS__IS_INTERNED_METHODDEF
     SYS_IS_FINALIZING_METHODDEF
     SYS_MDEBUG_METHODDEF
     SYS_SETSWITCHINTERVAL_METHODDEF
@@ -2305,6 +2506,7 @@ static PyMethodDef sys_methods[] = {
     SYS__STATS_CLEAR_METHODDEF
     SYS__STATS_DUMP_METHODDEF
 #endif
+    SYS__GET_CPU_COUNT_CONFIG_METHODDEF
     {NULL, NULL}  // sentinel
 };
 
@@ -2536,7 +2738,8 @@ _PySys_AddWarnOptionWithError(PyThreadState *tstate, PyObject *option)
     return 0;
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 PySys_AddWarnOptionUnicode(PyObject *option)
 {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -2548,7 +2751,8 @@ PySys_AddWarnOptionUnicode(PyObject *option)
     }
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 PySys_AddWarnOption(const wchar_t *s)
 {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -2567,7 +2771,8 @@ _Py_COMP_DIAG_POP
     Py_DECREF(unicode);
 }
 
-int
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(int)
 PySys_HasWarnOptions(void)
 {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -2618,14 +2823,20 @@ _PySys_AddXOptionWithError(const wchar_t *s)
     const wchar_t *name_end = wcschr(s, L'=');
     if (!name_end) {
         name = PyUnicode_FromWideChar(s, -1);
+        if (name == NULL) {
+            goto error;
+        }
         value = Py_NewRef(Py_True);
     }
     else {
         name = PyUnicode_FromWideChar(s, name_end - s);
+        if (name == NULL) {
+            goto error;
+        }
         value = PyUnicode_FromWideChar(name_end + 1, -1);
-    }
-    if (name == NULL || value == NULL) {
-        goto error;
+        if (value == NULL) {
+            goto error;
+        }
     }
     if (PyDict_SetItem(opts, name, value) < 0) {
         goto error;
@@ -2640,7 +2851,8 @@ _PySys_AddXOptionWithError(const wchar_t *s)
     return -1;
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 PySys_AddXOption(const wchar_t *s)
 {
     PyThreadState *tstate = _PyThreadState_GET();
@@ -3265,19 +3477,25 @@ _PySys_InitCore(PyThreadState *tstate, PyObject *sysdict)
 static int
 sys_add_xoption(PyObject *opts, const wchar_t *s)
 {
-    PyObject *name, *value;
+    PyObject *name, *value = NULL;
 
     const wchar_t *name_end = wcschr(s, L'=');
     if (!name_end) {
         name = PyUnicode_FromWideChar(s, -1);
+        if (name == NULL) {
+            goto error;
+        }
         value = Py_NewRef(Py_True);
     }
     else {
         name = PyUnicode_FromWideChar(s, name_end - s);
+        if (name == NULL) {
+            goto error;
+        }
         value = PyUnicode_FromWideChar(name_end + 1, -1);
-    }
-    if (name == NULL || value == NULL) {
-        goto error;
+        if (value == NULL) {
+            goto error;
+        }
     }
     if (PyDict_SetItem(opts, name, value) < 0) {
         goto error;
@@ -3351,7 +3569,9 @@ _PySys_UpdateConfig(PyThreadState *tstate)
     if (config->pycache_prefix != NULL) {
         SET_SYS_FROM_WSTR("pycache_prefix", config->pycache_prefix);
     } else {
-        PyDict_SetItemString(sysdict, "pycache_prefix", Py_None);
+        if (PyDict_SetItemString(sysdict, "pycache_prefix", Py_None) < 0) {
+            return -1;
+        }
     }
 
     COPY_LIST("argv", config->argv);
@@ -3365,7 +3585,9 @@ _PySys_UpdateConfig(PyThreadState *tstate)
         SET_SYS_FROM_WSTR("_stdlib_dir", stdlibdir);
     }
     else {
-        PyDict_SetItemString(sysdict, "_stdlib_dir", Py_None);
+        if (PyDict_SetItemString(sysdict, "_stdlib_dir", Py_None) < 0) {
+            return -1;
+        }
     }
 
 #undef SET_SYS_FROM_WSTR
@@ -3375,6 +3597,9 @@ _PySys_UpdateConfig(PyThreadState *tstate)
     // sys.flags
     PyObject *flags = _PySys_GetObject(interp, "flags"); // borrowed ref
     if (flags == NULL) {
+        if (!_PyErr_Occurred(tstate)) {
+            _PyErr_SetString(tstate, PyExc_RuntimeError, "lost sys.flags");
+        }
         return -1;
     }
     if (set_flags_from_config(interp, flags) < 0) {
@@ -3543,7 +3768,8 @@ makepathobject(const wchar_t *path, wchar_t delim)
     return v;
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 PySys_SetPath(const wchar_t *path)
 {
     PyObject *v;
@@ -3575,7 +3801,8 @@ make_sys_argv(int argc, wchar_t * const * argv)
     return list;
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 PySys_SetArgvEx(int argc, wchar_t **argv, int updatepath)
 {
     wchar_t* empty_argv[1] = {L""};
@@ -3619,7 +3846,8 @@ PySys_SetArgvEx(int argc, wchar_t **argv, int updatepath)
     }
 }
 
-void
+// Removed in Python 3.13 API, but kept for the stable ABI
+PyAPI_FUNC(void)
 PySys_SetArgv(int argc, wchar_t **argv)
 {
 _Py_COMP_DIAG_PUSH
@@ -3637,7 +3865,7 @@ sys_pyfile_write_unicode(PyObject *unicode, PyObject *file)
     if (file == NULL)
         return -1;
     assert(unicode != NULL);
-    PyObject *result = _PyObject_CallMethodOneArg(file, &_Py_ID(write), unicode);
+    PyObject *result = PyObject_CallMethodOneArg(file, &_Py_ID(write), unicode);
     if (result == NULL) {
         return -1;
     }
diff --git a/Python/thread.c b/Python/thread.c
index 7fc53f9b61360b..fefae8391617f7 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -6,17 +6,38 @@
    Stuff shared by all thread_*.h files is collected here. */
 
 #include "Python.h"
+#include "pycore_ceval.h"         // _PyEval_MakePendingCalls()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_structseq.h"     // _PyStructSequence_FiniBuiltin()
-#include "pycore_pythread.h"
+#include "pycore_pythread.h"      // _POSIX_THREADS
 
 #ifndef DONT_HAVE_STDIO_H
-#include <stdio.h>
+#  include <stdio.h>
 #endif
 
 #include <stdlib.h>
 
 
+// Define PY_TIMEOUT_MAX constant.
+#ifdef _POSIX_THREADS
+   // PyThread_acquire_lock_timed() uses _PyTime_FromNanoseconds(us * 1000),
+   // convert microseconds to nanoseconds.
+#  define PY_TIMEOUT_MAX_VALUE (LLONG_MAX / 1000)
+#elif defined (NT_THREADS)
+   // WaitForSingleObject() accepts timeout in milliseconds in the range
+   // [0; 0xFFFFFFFE] (DWORD type). INFINITE value (0xFFFFFFFF) means no
+   // timeout. 0xFFFFFFFE milliseconds is around 49.7 days.
+#  if 0xFFFFFFFELL < LLONG_MAX / 1000
+#    define PY_TIMEOUT_MAX_VALUE (0xFFFFFFFELL * 1000)
+#  else
+#    define PY_TIMEOUT_MAX_VALUE LLONG_MAX
+#  endif
+#else
+#  define PY_TIMEOUT_MAX_VALUE LLONG_MAX
+#endif
+const long long PY_TIMEOUT_MAX = PY_TIMEOUT_MAX_VALUE;
+
+
 static void PyThread__init_thread(void); /* Forward */
 
 #define initialized _PyRuntime.threads.initialized
@@ -72,6 +93,89 @@ PyThread_set_stacksize(size_t size)
 }
 
 
+int
+PyThread_ParseTimeoutArg(PyObject *arg, int blocking, PY_TIMEOUT_T *timeout_p)
+{
+    assert(_PyTime_FromSeconds(-1) == PyThread_UNSET_TIMEOUT);
+    if (arg == NULL || arg == Py_None) {
+        *timeout_p = blocking ? PyThread_UNSET_TIMEOUT : 0;
+        return 0;
+    }
+    if (!blocking) {
+        PyErr_SetString(PyExc_ValueError,
+                        "can't specify a timeout for a non-blocking call");
+        return -1;
+    }
+
+    _PyTime_t timeout;
+    if (_PyTime_FromSecondsObject(&timeout, arg, _PyTime_ROUND_TIMEOUT) < 0) {
+        return -1;
+    }
+    if (timeout < 0) {
+        PyErr_SetString(PyExc_ValueError,
+                        "timeout value must be a non-negative number");
+        return -1;
+    }
+
+    if (_PyTime_AsMicroseconds(timeout,
+                               _PyTime_ROUND_TIMEOUT) > PY_TIMEOUT_MAX) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "timeout value is too large");
+        return -1;
+    }
+    *timeout_p = timeout;
+    return 0;
+}
+
+PyLockStatus
+PyThread_acquire_lock_timed_with_retries(PyThread_type_lock lock,
+                                         PY_TIMEOUT_T timeout)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+    _PyTime_t endtime = 0;
+    if (timeout > 0) {
+        endtime = _PyDeadline_Init(timeout);
+    }
+
+    PyLockStatus r;
+    do {
+        _PyTime_t microseconds;
+        microseconds = _PyTime_AsMicroseconds(timeout, _PyTime_ROUND_CEILING);
+
+        /* first a simple non-blocking try without releasing the GIL */
+        r = PyThread_acquire_lock_timed(lock, 0, 0);
+        if (r == PY_LOCK_FAILURE && microseconds != 0) {
+            Py_BEGIN_ALLOW_THREADS
+            r = PyThread_acquire_lock_timed(lock, microseconds, 1);
+            Py_END_ALLOW_THREADS
+        }
+
+        if (r == PY_LOCK_INTR) {
+            /* Run signal handlers if we were interrupted.  Propagate
+             * exceptions from signal handlers, such as KeyboardInterrupt, by
+             * passing up PY_LOCK_INTR.  */
+            if (_PyEval_MakePendingCalls(tstate) < 0) {
+                return PY_LOCK_INTR;
+            }
+
+            /* If we're using a timeout, recompute the timeout after processing
+             * signals, since those can take time.  */
+            if (timeout > 0) {
+                timeout = _PyDeadline_Get(endtime);
+
+                /* Check for negative values, since those mean block forever.
+                 */
+                if (timeout < 0) {
+                    r = PY_LOCK_FAILURE;
+                }
+            }
+        }
+    } while (r == PY_LOCK_INTR);  /* Retry if we were interrupted. */
+
+    return r;
+}
+
+
 /* Thread Specific Storage (TSS) API
 
    Cross-platform components of TSS API implementation.
diff --git a/Python/thread_nt.h b/Python/thread_nt.h
index 26f441bd6d3c56..14b9cddc24c0ec 100644
--- a/Python/thread_nt.h
+++ b/Python/thread_nt.h
@@ -182,9 +182,9 @@ bootstrap(void *call)
     return 0;
 }
 
-unsigned long
-PyThread_start_new_thread(void (*func)(void *), void *arg)
-{
+int
+PyThread_start_joinable_thread(void (*func)(void *), void *arg,
+                               PyThread_ident_t* ident, PyThread_handle_t* handle) {
     HANDLE hThread;
     unsigned threadID;
     callobj *obj;
@@ -194,7 +194,7 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
 
     obj = (callobj*)HeapAlloc(GetProcessHeap(), 0, sizeof(*obj));
     if (!obj)
-        return PYTHREAD_INVALID_THREAD_ID;
+        return -1;
     obj->func = func;
     obj->arg = arg;
     PyThreadState *tstate = _PyThreadState_GET();
@@ -207,22 +207,51 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
         /* I've seen errno == EAGAIN here, which means "there are
          * too many threads".
          */
-        int e = errno;
-        threadID = (unsigned)-1;
         HeapFree(GetProcessHeap(), 0, obj);
+        return -1;
     }
-    else {
-        CloseHandle(hThread);
+    *ident = threadID;
+    // The cast is safe since HANDLE is pointer-sized
+    *handle = (PyThread_handle_t) hThread;
+    return 0;
+}
+
+unsigned long
+PyThread_start_new_thread(void (*func)(void *), void *arg) {
+    PyThread_handle_t handle;
+    PyThread_ident_t ident;
+    if (PyThread_start_joinable_thread(func, arg, &ident, &handle)) {
+        return PYTHREAD_INVALID_THREAD_ID;
     }
-    return threadID;
+    CloseHandle((HANDLE) handle);
+    // The cast is safe since the ident is really an unsigned int
+    return (unsigned long) ident;
+}
+
+int
+PyThread_join_thread(PyThread_handle_t handle) {
+    HANDLE hThread = (HANDLE) handle;
+    int errored = (WaitForSingleObject(hThread, INFINITE) != WAIT_OBJECT_0);
+    CloseHandle(hThread);
+    return errored;
+}
+
+int
+PyThread_detach_thread(PyThread_handle_t handle) {
+    HANDLE hThread = (HANDLE) handle;
+    return (CloseHandle(hThread) == 0);
+}
+
+void
+PyThread_update_thread_after_fork(PyThread_ident_t* ident, PyThread_handle_t* handle) {
 }
 
 /*
  * Return the thread Id instead of a handle. The Id is said to uniquely identify the
  * thread in the system
  */
-unsigned long
-PyThread_get_thread_ident(void)
+PyThread_ident_t
+PyThread_get_thread_ident_ex(void)
 {
     if (!initialized)
         PyThread_init_thread();
@@ -230,6 +259,13 @@ PyThread_get_thread_ident(void)
     return GetCurrentThreadId();
 }
 
+unsigned long
+PyThread_get_thread_ident(void)
+{
+    return (unsigned long) PyThread_get_thread_ident_ex();
+}
+
+
 #ifdef PY_HAVE_THREAD_NATIVE_ID
 /*
  * Return the native Thread ID (TID) of the calling thread.
diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h
index 76d6f3bcdf9c40..fb3b79fc160502 100644
--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -1,4 +1,5 @@
-#include "pycore_interp.h"    // _PyInterpreterState.threads.stacksize
+#include "pycore_interp.h"        // _PyInterpreterState.threads.stacksize
+#include "pycore_pythread.h"      // _POSIX_SEMAPHORES
 
 /* Posix threads interface */
 
@@ -19,6 +20,8 @@
 #   include <sys/syscall.h>     /* syscall(SYS_gettid) */
 #elif defined(__FreeBSD__)
 #   include <pthread_np.h>      /* pthread_getthreadid_np() */
+#elif defined(__FreeBSD_kernel__)
+#   include <sys/syscall.h>     /* syscall(SYS_thr_self) */
 #elif defined(__OpenBSD__)
 #   include <unistd.h>          /* getthrid() */
 #elif defined(_AIX)
@@ -84,10 +87,10 @@
 /* On FreeBSD 4.x, _POSIX_SEMAPHORES is defined empty, so
    we need to add 0 to make it work there as well. */
 #if (_POSIX_SEMAPHORES+0) == -1
-#define HAVE_BROKEN_POSIX_SEMAPHORES
+#  define HAVE_BROKEN_POSIX_SEMAPHORES
 #else
-#include <semaphore.h>
-#include <errno.h>
+#  include <semaphore.h>
+#  include <errno.h>
 #endif
 #endif
 
@@ -234,8 +237,8 @@ pythread_wrapper(void *arg)
     return NULL;
 }
 
-unsigned long
-PyThread_start_new_thread(void (*func)(void *), void *arg)
+static int
+do_start_joinable_thread(void (*func)(void *), void *arg, pthread_t* out_id)
 {
     pthread_t th;
     int status;
@@ -251,7 +254,7 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
 
 #if defined(THREAD_STACK_SIZE) || defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
     if (pthread_attr_init(&attrs) != 0)
-        return PYTHREAD_INVALID_THREAD_ID;
+        return -1;
 #endif
 #if defined(THREAD_STACK_SIZE)
     PyThreadState *tstate = _PyThreadState_GET();
@@ -260,7 +263,7 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
     if (tss != 0) {
         if (pthread_attr_setstacksize(&attrs, tss) != 0) {
             pthread_attr_destroy(&attrs);
-            return PYTHREAD_INVALID_THREAD_ID;
+            return -1;
         }
     }
 #endif
@@ -271,7 +274,7 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
     pythread_callback *callback = PyMem_RawMalloc(sizeof(pythread_callback));
 
     if (callback == NULL) {
-      return PYTHREAD_INVALID_THREAD_ID;
+      return -1;
     }
 
     callback->func = func;
@@ -291,11 +294,34 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
 
     if (status != 0) {
         PyMem_RawFree(callback);
-        return PYTHREAD_INVALID_THREAD_ID;
+        return -1;
     }
+    *out_id = th;
+    return 0;
+}
 
-    pthread_detach(th);
+int
+PyThread_start_joinable_thread(void (*func)(void *), void *arg,
+                               PyThread_ident_t* ident, PyThread_handle_t* handle) {
+    pthread_t th = (pthread_t) 0;
+    if (do_start_joinable_thread(func, arg, &th)) {
+        return -1;
+    }
+    *ident = (PyThread_ident_t) th;
+    *handle = (PyThread_handle_t) th;
+    assert(th == (pthread_t) *ident);
+    assert(th == (pthread_t) *handle);
+    return 0;
+}
 
+unsigned long
+PyThread_start_new_thread(void (*func)(void *), void *arg)
+{
+    pthread_t th = (pthread_t) 0;
+    if (do_start_joinable_thread(func, arg, &th)) {
+        return PYTHREAD_INVALID_THREAD_ID;
+    }
+    pthread_detach(th);
 #if SIZEOF_PTHREAD_T <= SIZEOF_LONG
     return (unsigned long) th;
 #else
@@ -303,20 +329,46 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
 #endif
 }
 
+int
+PyThread_join_thread(PyThread_handle_t th) {
+    return pthread_join((pthread_t) th, NULL);
+}
+
+int
+PyThread_detach_thread(PyThread_handle_t th) {
+    return pthread_detach((pthread_t) th);
+}
+
+void
+PyThread_update_thread_after_fork(PyThread_ident_t* ident, PyThread_handle_t* handle) {
+    // The thread id might have been updated in the forked child
+    pthread_t th = pthread_self();
+    *ident = (PyThread_ident_t) th;
+    *handle = (PyThread_handle_t) th;
+    assert(th == (pthread_t) *ident);
+    assert(th == (pthread_t) *handle);
+}
+
 /* XXX This implementation is considered (to quote Tim Peters) "inherently
    hosed" because:
      - It does not guarantee the promise that a non-zero integer is returned.
      - The cast to unsigned long is inherently unsafe.
      - It is not clear that the 'volatile' (for AIX?) are any longer necessary.
 */
-unsigned long
-PyThread_get_thread_ident(void)
-{
+PyThread_ident_t
+PyThread_get_thread_ident_ex(void) {
     volatile pthread_t threadid;
     if (!initialized)
         PyThread_init_thread();
     threadid = pthread_self();
-    return (unsigned long) threadid;
+    assert(threadid == (pthread_t) (PyThread_ident_t) threadid);
+    return (PyThread_ident_t) threadid;
+}
+
+unsigned long
+PyThread_get_thread_ident(void)
+{
+    return (unsigned long) PyThread_get_thread_ident_ex();
 }
 
 #ifdef PY_HAVE_THREAD_NATIVE_ID
@@ -334,6 +386,9 @@ PyThread_get_thread_native_id(void)
 #elif defined(__FreeBSD__)
     int native_id;
     native_id = pthread_getthreadid_np();
+#elif defined(__FreeBSD_kernel__)
+    long native_id;
+    syscall(SYS_thr_self, &native_id);
 #elif defined(__OpenBSD__)
     pid_t native_id;
     native_id = getthrid();
@@ -356,7 +411,15 @@ PyThread_exit_thread(void)
 {
     if (!initialized)
         exit(0);
+#if defined(__wasi__)
+    /*
+     * wasi-threads doesn't have pthread_exit right now
+     * cf. https://github.com/WebAssembly/wasi-threads/issues/7
+     */
+    abort();
+#else
     pthread_exit(0);
+#endif
 }
 
 #ifdef USE_SEMAPHORES
diff --git a/Python/thread_pthread_stubs.h b/Python/thread_pthread_stubs.h
index 56e5b6141924b4..4741e594e52e65 100644
--- a/Python/thread_pthread_stubs.h
+++ b/Python/thread_pthread_stubs.h
@@ -40,7 +40,7 @@ pthread_cond_init(pthread_cond_t *restrict cond,
     return 0;
 }
 
-PyAPI_FUNC(int)pthread_cond_destroy(pthread_cond_t *cond)
+PyAPI_FUNC(int) pthread_cond_destroy(pthread_cond_t *cond)
 {
     return 0;
 }
@@ -94,6 +94,15 @@ pthread_detach(pthread_t thread)
     return 0;
 }
 
+int
+pthread_join(pthread_t thread, void** value_ptr)
+{
+    if (value_ptr) {
+        *value_ptr = NULL;
+    }
+    return 0;
+}
+
 PyAPI_FUNC(pthread_t) pthread_self(void)
 {
     return 0;
diff --git a/Python/traceback.c b/Python/traceback.c
index b2479542047308..abd429ac6c1f71 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -3,9 +3,9 @@
 
 #include "Python.h"
 
-#include "pycore_ast.h"           // asdl_seq_*
+#include "pycore_ast.h"           // asdl_seq_GET()
 #include "pycore_call.h"          // _PyObject_CallMethodFormat()
-#include "pycore_compile.h"       // _PyAST_Optimize
+#include "pycore_compile.h"       // _PyAST_Optimize()
 #include "pycore_fileutils.h"     // _Py_BEGIN_SUPPRESS_IPH
 #include "pycore_frame.h"         // _PyFrame_GetCode()
 #include "pycore_interp.h"        // PyInterpreterState.gc
@@ -13,24 +13,25 @@
 #include "pycore_pyarena.h"       // _PyArena_Free()
 #include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_sysmodule.h"     // _PySys_GetAttr()
 #include "pycore_traceback.h"     // EXCEPTION_TB_HEADER
 
-#include "../Parser/pegen.h"      // _PyPegen_byte_offset_to_character_offset()
 #include "frameobject.h"          // PyFrame_New()
-#include "structmember.h"         // PyMemberDef
+
 #include "osdefs.h"               // SEP
-#ifdef HAVE_FCNTL_H
-#  include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>             // lseek()
 #endif
 
+
 #define OFF(x) offsetof(PyTracebackObject, x)
+#define PUTS(fd, str) (void)_Py_write_noraise(fd, str, (int)strlen(str))
 
-#define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str))
 #define MAX_STRING_LENGTH 500
 #define MAX_FRAME_DEPTH 100
 #define MAX_NTHREADS 100
 
-/* Function from Parser/tokenizer.c */
+/* Function from Parser/tokenizer/file_tokenizer.c */
 extern char* _PyTokenizer_FindEncodingFilename(int, PyObject *);
 
 /*[clinic input]
@@ -107,6 +108,26 @@ tb_next_get(PyTracebackObject *self, void *Py_UNUSED(_))
     return Py_NewRef(ret);
 }
 
+static int
+tb_get_lineno(PyTracebackObject* tb) {
+    _PyInterpreterFrame* frame = tb->tb_frame->f_frame;
+    assert(frame != NULL);
+    return PyCode_Addr2Line(_PyFrame_GetCode(frame), tb->tb_lasti);
+}
+
+static PyObject *
+tb_lineno_get(PyTracebackObject *self, void *Py_UNUSED(_))
+{
+    int lineno = self->tb_lineno;
+    if (lineno == -1) {
+        lineno = tb_get_lineno(self);
+        if (lineno < 0) {
+            Py_RETURN_NONE;
+        }
+    }
+    return PyLong_FromLong(lineno);
+}
+
 static int
 tb_next_set(PyTracebackObject *self, PyObject *new_next, void *Py_UNUSED(_))
 {
@@ -148,14 +169,14 @@ static PyMethodDef tb_methods[] = {
 };
 
 static PyMemberDef tb_memberlist[] = {
-    {"tb_frame",        T_OBJECT,       OFF(tb_frame),  READONLY|PY_AUDIT_READ},
-    {"tb_lasti",        T_INT,          OFF(tb_lasti),  READONLY},
-    {"tb_lineno",       T_INT,          OFF(tb_lineno), READONLY},
+    {"tb_frame",        _Py_T_OBJECT,       OFF(tb_frame),  Py_READONLY|Py_AUDIT_READ},
+    {"tb_lasti",        Py_T_INT,          OFF(tb_lasti),  Py_READONLY},
     {NULL}      /* Sentinel */
 };
 
 static PyGetSetDef tb_getsetters[] = {
     {"tb_next", (getter)tb_next_get, (setter)tb_next_set, NULL, NULL},
+    {"tb_lineno", (getter)tb_lineno_get, NULL, NULL, NULL},
     {NULL}      /* Sentinel */
 };
 
@@ -234,8 +255,7 @@ _PyTraceBack_FromFrame(PyObject *tb_next, PyFrameObject *frame)
     assert(tb_next == NULL || PyTraceBack_Check(tb_next));
     assert(frame != NULL);
     int addr = _PyInterpreterFrame_LASTI(frame->f_frame) * sizeof(_Py_CODEUNIT);
-    return tb_create_raw((PyTracebackObject *)tb_next, frame, addr,
-                         PyFrame_GetLineNumber(frame));
+    return tb_create_raw((PyTracebackObject *)tb_next, frame, addr, -1);
 }
 
 
@@ -395,27 +415,9 @@ _Py_WriteIndent(int indent, PyObject *f)
     return 0;
 }
 
-/* Writes indent spaces, followed by the margin if it is not `\0`.
-   Returns 0 on success and non-zero on failure.
- */
-int
-_Py_WriteIndentedMargin(int indent, const char *margin, PyObject *f)
-{
-    if (_Py_WriteIndent(indent, f) < 0) {
-        return -1;
-    }
-    if (margin) {
-        if (PyFile_WriteString(margin, f) < 0) {
-            return -1;
-        }
-    }
-    return 0;
-}
-
 static int
-display_source_line_with_margin(PyObject *f, PyObject *filename, int lineno, int indent,
-                                int margin_indent, const char *margin,
-                                int *truncation, PyObject **line)
+display_source_line(PyObject *f, PyObject *filename, int lineno, int indent,
+                    int *truncation, PyObject **line)
 {
     int fd;
     int i;
@@ -543,10 +545,6 @@ display_source_line_with_margin(PyObject *f, PyObject *filename, int lineno, int
         *truncation = i - indent;
     }
 
-    if (_Py_WriteIndentedMargin(margin_indent, margin, f) < 0) {
-        goto error;
-    }
-
     /* Write some spaces before the line */
     if (_Py_WriteIndent(indent, f) < 0) {
         goto error;
@@ -572,148 +570,11 @@ int
 _Py_DisplaySourceLine(PyObject *f, PyObject *filename, int lineno, int indent,
                       int *truncation, PyObject **line)
 {
-    return display_source_line_with_margin(f, filename, lineno, indent, 0,
-                                           NULL, truncation, line);
+    return display_source_line(f, filename, lineno, indent, truncation, line);
 }
 
-/* AST based Traceback Specialization
- *
- * When displaying a new traceback line, for certain syntactical constructs
- * (e.g a subscript, an arithmetic operation) we try to create a representation
- * that separates the primary source of error from the rest.
- *
- * Example specialization of BinOp nodes:
- *  Traceback (most recent call last):
- *    File "/home/isidentical/cpython/cpython/t.py", line 10, in <module>
- *      add_values(1, 2, 'x', 3, 4)
- *    File "/home/isidentical/cpython/cpython/t.py", line 2, in add_values
- *      return a + b + c + d + e
- *             ~~~~~~^~~
- *  TypeError: 'NoneType' object is not subscriptable
- */
 
 #define IS_WHITESPACE(c) (((c) == ' ') || ((c) == '\t') || ((c) == '\f'))
-
-static int
-extract_anchors_from_expr(const char *segment_str, expr_ty expr, Py_ssize_t *left_anchor, Py_ssize_t *right_anchor,
-                          char** primary_error_char, char** secondary_error_char)
-{
-    switch (expr->kind) {
-        case BinOp_kind: {
-            expr_ty left = expr->v.BinOp.left;
-            expr_ty right = expr->v.BinOp.right;
-            for (int i = left->end_col_offset; i < right->col_offset; i++) {
-                if (IS_WHITESPACE(segment_str[i])) {
-                    continue;
-                }
-
-                *left_anchor = i;
-                *right_anchor = i + 1;
-
-                // Check whether if this a two-character operator (e.g //)
-                if (i + 1 < right->col_offset && !IS_WHITESPACE(segment_str[i + 1])) {
-                    ++*right_anchor;
-                }
-
-                // Set the error characters
-                *primary_error_char = "~";
-                *secondary_error_char = "^";
-                break;
-            }
-            return 1;
-        }
-        case Subscript_kind: {
-            *left_anchor = expr->v.Subscript.value->end_col_offset;
-            *right_anchor = expr->v.Subscript.slice->end_col_offset + 1;
-
-            // Set the error characters
-            *primary_error_char = "~";
-            *secondary_error_char = "^";
-            return 1;
-        }
-        default:
-            return 0;
-    }
-}
-
-static int
-extract_anchors_from_stmt(const char *segment_str, stmt_ty statement, Py_ssize_t *left_anchor, Py_ssize_t *right_anchor,
-                          char** primary_error_char, char** secondary_error_char)
-{
-    switch (statement->kind) {
-        case Expr_kind: {
-            return extract_anchors_from_expr(segment_str, statement->v.Expr.value, left_anchor, right_anchor,
-                                             primary_error_char, secondary_error_char);
-        }
-        default:
-            return 0;
-    }
-}
-
-static int
-extract_anchors_from_line(PyObject *filename, PyObject *line,
-                          Py_ssize_t start_offset, Py_ssize_t end_offset,
-                          Py_ssize_t *left_anchor, Py_ssize_t *right_anchor,
-                          char** primary_error_char, char** secondary_error_char)
-{
-    int res = -1;
-    PyArena *arena = NULL;
-    PyObject *segment = PyUnicode_Substring(line, start_offset, end_offset);
-    if (!segment) {
-        goto done;
-    }
-
-    const char *segment_str = PyUnicode_AsUTF8(segment);
-    if (!segment_str) {
-        goto done;
-    }
-
-    arena = _PyArena_New();
-    if (!arena) {
-        goto done;
-    }
-
-    PyCompilerFlags flags = _PyCompilerFlags_INIT;
-
-    _PyASTOptimizeState state;
-    state.optimize = _Py_GetConfig()->optimization_level;
-    state.ff_features = 0;
-
-    mod_ty module = _PyParser_ASTFromString(segment_str, filename, Py_file_input,
-                                            &flags, arena);
-    if (!module) {
-        goto done;
-    }
-    if (!_PyAST_Optimize(module, arena, &state)) {
-        goto done;
-    }
-
-    assert(module->kind == Module_kind);
-    if (asdl_seq_LEN(module->v.Module.body) == 1) {
-        stmt_ty statement = asdl_seq_GET(module->v.Module.body, 0);
-        res = extract_anchors_from_stmt(segment_str, statement, left_anchor, right_anchor,
-                                        primary_error_char, secondary_error_char);
-    } else {
-        res = 0;
-    }
-
-done:
-    if (res > 0) {
-        // Normalize the AST offsets to byte offsets and adjust them with the
-        // start of the actual line (instead of the source code segment).
-        assert(segment != NULL);
-        assert(*left_anchor >= 0);
-        assert(*right_anchor >= 0);
-        *left_anchor = _PyPegen_byte_offset_to_character_offset(segment, *left_anchor) + start_offset;
-        *right_anchor = _PyPegen_byte_offset_to_character_offset(segment, *right_anchor) + start_offset;
-    }
-    Py_XDECREF(segment);
-    if (arena) {
-        _PyArena_Free(arena);
-    }
-    return res;
-}
-
 #define _TRACEBACK_SOURCE_LINE_INDENT 4
 
 static inline int
@@ -727,42 +588,14 @@ ignore_source_errors(void) {
     return 0;
 }
 
-static inline int
-print_error_location_carets(PyObject *f, int offset, Py_ssize_t start_offset, Py_ssize_t end_offset,
-                            Py_ssize_t right_start_offset, Py_ssize_t left_end_offset,
-                            const char *primary, const char *secondary) {
-    int special_chars = (left_end_offset != -1 || right_start_offset != -1);
-    const char *str;
-    while (++offset <= end_offset) {
-        if (offset <= start_offset) {
-            str = " ";
-        } else if (special_chars && left_end_offset < offset && offset <= right_start_offset) {
-            str = secondary;
-        } else {
-            str = primary;
-        }
-        if (PyFile_WriteString(str, f) < 0) {
-            return -1;
-        }
-    }
-    if (PyFile_WriteString("\n", f) < 0) {
-        return -1;
-    }
-    return 0;
-}
-
 static int
 tb_displayline(PyTracebackObject* tb, PyObject *f, PyObject *filename, int lineno,
-               PyFrameObject *frame, PyObject *name, int margin_indent, const char *margin)
+               PyFrameObject *frame, PyObject *name)
 {
     if (filename == NULL || name == NULL) {
         return -1;
     }
 
-    if (_Py_WriteIndentedMargin(margin_indent, margin, f) < 0) {
-        return -1;
-    }
-
     PyObject *line = PyUnicode_FromFormat("  File \"%U\", line %d, in %U\n",
                                           filename, lineno, name);
     if (line == NULL) {
@@ -779,118 +612,13 @@ tb_displayline(PyTracebackObject* tb, PyObject *f, PyObject *filename, int linen
 
     int truncation = _TRACEBACK_SOURCE_LINE_INDENT;
     PyObject* source_line = NULL;
-    int rc = display_source_line_with_margin(
+    int rc = display_source_line(
             f, filename, lineno, _TRACEBACK_SOURCE_LINE_INDENT,
-            margin_indent, margin, &truncation, &source_line);
+            &truncation, &source_line);
     if (rc != 0 || !source_line) {
         /* ignore errors since we can't report them, can we? */
         err = ignore_source_errors();
-        goto done;
-    }
-
-    int code_offset = tb->tb_lasti;
-    PyCodeObject* code = frame->f_frame->f_code;
-    const Py_ssize_t source_line_len = PyUnicode_GET_LENGTH(source_line);
-
-    int start_line;
-    int end_line;
-    int start_col_byte_offset;
-    int end_col_byte_offset;
-    if (!PyCode_Addr2Location(code, code_offset, &start_line, &start_col_byte_offset,
-                              &end_line, &end_col_byte_offset)) {
-        goto done;
-    }
-
-    if (start_line < 0 || end_line < 0
-        || start_col_byte_offset < 0
-        || end_col_byte_offset < 0)
-    {
-        goto done;
-    }
-
-    // When displaying errors, we will use the following generic structure:
-    //
-    //  ERROR LINE ERROR LINE ERROR LINE ERROR LINE ERROR LINE ERROR LINE ERROR LINE
-    //        ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^~~~~~~~~~~~~~~~~~~~
-    //        |              |-> left_end_offset     |                  |-> end_offset
-    //        |-> start_offset                       |-> right_start_offset
-    //
-    // In general we will only have (start_offset, end_offset) but we can gather more information
-    // by analyzing the AST of the text between *start_offset* and *end_offset*. If this succeeds
-    // we could get *left_end_offset* and *right_start_offset* and some selection of characters for
-    // the different ranges (primary_error_char and secondary_error_char). If we cannot obtain the
-    // AST information or we cannot identify special ranges within it, then left_end_offset and
-    // right_end_offset will be set to -1.
-    //
-    // To keep the column indicators pertinent, they are not shown when the primary character
-    // spans the whole line.
-
-    // Convert the utf-8 byte offset to the actual character offset so we print the right number of carets.
-    assert(source_line);
-    Py_ssize_t start_offset = _PyPegen_byte_offset_to_character_offset(source_line, start_col_byte_offset);
-    if (start_offset < 0) {
-        err = ignore_source_errors() < 0;
-        goto done;
-    }
-
-    Py_ssize_t end_offset = _PyPegen_byte_offset_to_character_offset(source_line, end_col_byte_offset);
-    if (end_offset < 0) {
-        err = ignore_source_errors() < 0;
-        goto done;
-    }
-
-    Py_ssize_t left_end_offset = -1;
-    Py_ssize_t right_start_offset = -1;
-
-    char *primary_error_char = "^";
-    char *secondary_error_char = primary_error_char;
-
-    if (start_line == end_line) {
-        int res = extract_anchors_from_line(filename, source_line, start_offset, end_offset,
-                                            &left_end_offset, &right_start_offset,
-                                            &primary_error_char, &secondary_error_char);
-        if (res < 0 && ignore_source_errors() < 0) {
-            goto done;
-        }
-    }
-    else {
-        // If this is a multi-line expression, then we will highlight until
-        // the last non-whitespace character.
-        const char *source_line_str = PyUnicode_AsUTF8(source_line);
-        if (!source_line_str) {
-            goto done;
-        }
-
-        Py_ssize_t i = source_line_len;
-        while (--i >= 0) {
-            if (!IS_WHITESPACE(source_line_str[i])) {
-                break;
-            }
-        }
-
-        end_offset = i + 1;
-    }
-
-    // Elide indicators if primary char spans the frame line
-    Py_ssize_t stripped_line_len = source_line_len - truncation - _TRACEBACK_SOURCE_LINE_INDENT;
-    bool has_secondary_ranges = (left_end_offset != -1 || right_start_offset != -1);
-    if (end_offset - start_offset == stripped_line_len && !has_secondary_ranges) {
-        goto done;
-    }
-
-    if (_Py_WriteIndentedMargin(margin_indent, margin, f) < 0) {
-        err = -1;
-        goto done;
-    }
-
-    if (print_error_location_carets(f, truncation, start_offset, end_offset,
-                                    right_start_offset, left_end_offset,
-                                    primary_error_char, secondary_error_char) < 0) {
-        err = -1;
-        goto done;
     }
-
-done:
     Py_XDECREF(source_line);
     return err;
 }
@@ -915,8 +643,7 @@ tb_print_line_repeated(PyObject *f, long cnt)
 }
 
 static int
-tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit,
-                 int indent, const char *margin)
+tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit)
 {
     PyCodeObject *code = NULL;
     Py_ssize_t depth = 0;
@@ -935,9 +662,13 @@ tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit,
     }
     while (tb != NULL) {
         code = PyFrame_GetCode(tb->tb_frame);
+        int tb_lineno = tb->tb_lineno;
+        if (tb_lineno == -1) {
+            tb_lineno = tb_get_lineno(tb);
+        }
         if (last_file == NULL ||
             code->co_filename != last_file ||
-            last_line == -1 || tb->tb_lineno != last_line ||
+            last_line == -1 || tb_lineno != last_line ||
             last_name == NULL || code->co_name != last_name) {
             if (cnt > TB_RECURSIVE_CUTOFF) {
                 if (tb_print_line_repeated(f, cnt) < 0) {
@@ -945,14 +676,14 @@ tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit,
                 }
             }
             last_file = code->co_filename;
-            last_line = tb->tb_lineno;
+            last_line = tb_lineno;
             last_name = code->co_name;
             cnt = 0;
         }
         cnt++;
         if (cnt <= TB_RECURSIVE_CUTOFF) {
-            if (tb_displayline(tb, f, code->co_filename, tb->tb_lineno,
-                               tb->tb_frame, code->co_name, indent, margin) < 0) {
+            if (tb_displayline(tb, f, code->co_filename, tb_lineno,
+                               tb->tb_frame, code->co_name) < 0) {
                 goto error;
             }
 
@@ -977,8 +708,7 @@ tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit,
 #define PyTraceBack_LIMIT 1000
 
 int
-_PyTraceBack_Print_Indented(PyObject *v, int indent, const char *margin,
-                            const char *header_margin, const char *header, PyObject *f)
+_PyTraceBack_Print(PyObject *v, const char *header, PyObject *f)
 {
     PyObject *limitv;
     long limit = PyTraceBack_LIMIT;
@@ -1001,15 +731,12 @@ _PyTraceBack_Print_Indented(PyObject *v, int indent, const char *margin,
             return 0;
         }
     }
-    if (_Py_WriteIndentedMargin(indent, header_margin, f) < 0) {
-        return -1;
-    }
 
     if (PyFile_WriteString(header, f) < 0) {
         return -1;
     }
 
-    if (tb_printinternal((PyTracebackObject *)v, f, limit, indent, margin) < 0) {
+    if (tb_printinternal((PyTracebackObject *)v, f, limit) < 0) {
         return -1;
     }
 
@@ -1019,12 +746,8 @@ _PyTraceBack_Print_Indented(PyObject *v, int indent, const char *margin,
 int
 PyTraceBack_Print(PyObject *v, PyObject *f)
 {
-    int indent = 0;
-    const char *margin = NULL;
-    const char *header_margin = NULL;
     const char *header = EXCEPTION_TB_HEADER;
-
-    return _PyTraceBack_Print_Indented(v, indent, margin, header_margin, header, f);
+    return _PyTraceBack_Print(v, header, f);
 }
 
 /* Format an integer in range [0; 0xffffffff] to decimal and write it
@@ -1051,7 +774,7 @@ _Py_DumpDecimal(int fd, size_t value)
         value /= 10;
     } while (value);
 
-    _Py_write_noraise(fd, ptr, end - ptr);
+    (void)_Py_write_noraise(fd, ptr, end - ptr);
 }
 
 /* Format an integer as hexadecimal with width digits into fd file descriptor.
@@ -1076,7 +799,7 @@ _Py_DumpHexadecimal(int fd, uintptr_t value, Py_ssize_t width)
         value >>= 4;
     } while ((end - ptr) < width || value);
 
-    _Py_write_noraise(fd, ptr, end - ptr);
+    (void)_Py_write_noraise(fd, ptr, end - ptr);
 }
 
 void
@@ -1129,7 +852,7 @@ _Py_DumpASCII(int fd, PyObject *text)
         }
         if (!need_escape) {
             // The string can be written with a single write() syscall
-            _Py_write_noraise(fd, str, size);
+            (void)_Py_write_noraise(fd, str, size);
             goto done;
         }
     }
@@ -1139,7 +862,7 @@ _Py_DumpASCII(int fd, PyObject *text)
         if (' ' <= ch && ch <= 126) {
             /* printable ASCII character */
             char c = (char)ch;
-            _Py_write_noraise(fd, &c, 1);
+            (void)_Py_write_noraise(fd, &c, 1);
         }
         else if (ch <= 0xff) {
             PUTS(fd, "\\x");
@@ -1168,7 +891,7 @@ _Py_DumpASCII(int fd, PyObject *text)
 static void
 dump_frame(int fd, _PyInterpreterFrame *frame)
 {
-    PyCodeObject *code = frame->f_code;
+    PyCodeObject *code =_PyFrame_GetCode(frame);
     PUTS(fd, "  File ");
     if (code->co_filename != NULL
         && PyUnicode_Check(code->co_filename))
@@ -1201,23 +924,45 @@ dump_frame(int fd, _PyInterpreterFrame *frame)
     PUTS(fd, "\n");
 }
 
+static int
+tstate_is_freed(PyThreadState *tstate)
+{
+    if (_PyMem_IsPtrFreed(tstate)) {
+        return 1;
+    }
+    if (_PyMem_IsPtrFreed(tstate->interp)) {
+        return 1;
+    }
+    return 0;
+}
+
+
+static int
+interp_is_freed(PyInterpreterState *interp)
+{
+    return _PyMem_IsPtrFreed(interp);
+}
+
+
 static void
 dump_traceback(int fd, PyThreadState *tstate, int write_header)
 {
-    _PyInterpreterFrame *frame;
-    unsigned int depth;
-
     if (write_header) {
         PUTS(fd, "Stack (most recent call first):\n");
     }
 
-    frame = tstate->cframe->current_frame;
+    if (tstate_is_freed(tstate)) {
+        PUTS(fd, "  <tstate is freed>\n");
+        return;
+    }
+
+    _PyInterpreterFrame *frame = tstate->current_frame;
     if (frame == NULL) {
         PUTS(fd, "  <no Python frame>\n");
         return;
     }
 
-    depth = 0;
+    unsigned int depth = 0;
     while (1) {
         if (MAX_FRAME_DEPTH <= depth) {
             PUTS(fd, "  ...\n");
@@ -1281,9 +1026,6 @@ const char*
 _Py_DumpTracebackThreads(int fd, PyInterpreterState *interp,
                          PyThreadState *current_tstate)
 {
-    PyThreadState *tstate;
-    unsigned int nthreads;
-
     if (current_tstate == NULL) {
         /* _Py_DumpTracebackThreads() is called from signal handlers by
            faulthandler.
@@ -1299,6 +1041,10 @@ _Py_DumpTracebackThreads(int fd, PyInterpreterState *interp,
         current_tstate = PyGILState_GetThisThreadState();
     }
 
+    if (current_tstate != NULL && tstate_is_freed(current_tstate)) {
+        return "tstate is freed";
+    }
+
     if (interp == NULL) {
         if (current_tstate == NULL) {
             interp = _PyGILState_GetInterpreterStateUnsafe();
@@ -1313,14 +1059,18 @@ _Py_DumpTracebackThreads(int fd, PyInterpreterState *interp,
     }
     assert(interp != NULL);
 
+    if (interp_is_freed(interp)) {
+        return "interp is freed";
+    }
+
     /* Get the current interpreter from the current thread */
-    tstate = PyInterpreterState_ThreadHead(interp);
+    PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
     if (tstate == NULL)
         return "unable to get the thread head state";
 
     /* Dump the traceback of each thread */
     tstate = PyInterpreterState_ThreadHead(interp);
-    nthreads = 0;
+    unsigned int nthreads = 0;
     _Py_BEGIN_SUPPRESS_IPH
     do
     {
diff --git a/Python/tracemalloc.c b/Python/tracemalloc.c
new file mode 100644
index 00000000000000..19b64c619feb6a
--- /dev/null
+++ b/Python/tracemalloc.c
@@ -0,0 +1,1562 @@
+#include "Python.h"
+#include "pycore_fileutils.h"     // _Py_write_noraise()
+#include "pycore_gc.h"            // PyGC_Head
+#include "pycore_hashtable.h"     // _Py_hashtable_t
+#include "pycore_object.h"        // _PyType_PreHeaderSize()
+#include "pycore_pymem.h"         // _Py_tracemalloc_config
+#include "pycore_runtime.h"       // _Py_ID()
+#include "pycore_traceback.h"     // _Py_DumpASCII()
+#include <pycore_frame.h>
+
+#include "frameobject.h"          // _PyInterpreterFrame_GetLine
+
+#include <stdlib.h>               // malloc()
+
+#define tracemalloc_config _PyRuntime.tracemalloc.config
+
+_Py_DECLARE_STR(anon_unknown, "<unknown>");
+
+/* Forward declaration */
+static void* raw_malloc(size_t size);
+static void raw_free(void *ptr);
+
+#ifdef Py_DEBUG
+#  define TRACE_DEBUG
+#endif
+
+#define TO_PTR(key) ((const void *)(uintptr_t)(key))
+#define FROM_PTR(key) ((uintptr_t)(key))
+
+#define allocators _PyRuntime.tracemalloc.allocators
+
+
+#if defined(TRACE_RAW_MALLOC)
+/* This lock is needed because tracemalloc_free() is called without
+   the GIL held from PyMem_RawFree(). It cannot acquire the lock because it
+   would introduce a deadlock in _PyThreadState_DeleteCurrent(). */
+#  define tables_lock _PyRuntime.tracemalloc.tables_lock
+#  define TABLES_LOCK() PyThread_acquire_lock(tables_lock, 1)
+#  define TABLES_UNLOCK() PyThread_release_lock(tables_lock)
+#else
+   /* variables are protected by the GIL */
+#  define TABLES_LOCK()
+#  define TABLES_UNLOCK()
+#endif
+
+
+#define DEFAULT_DOMAIN 0
+
+typedef struct tracemalloc_frame frame_t;
+typedef struct tracemalloc_traceback traceback_t;
+
+#define TRACEBACK_SIZE(NFRAME) \
+        (sizeof(traceback_t) + sizeof(frame_t) * (NFRAME - 1))
+
+/* The maximum number of frames is either:
+ - The maximum number of frames we can store in `traceback_t.nframe`
+ - The maximum memory size_t we can allocate */
+static const unsigned long MAX_NFRAME = Py_MIN(UINT16_MAX, ((SIZE_MAX - sizeof(traceback_t)) / sizeof(frame_t) + 1));
+
+
+#define tracemalloc_empty_traceback _PyRuntime.tracemalloc.empty_traceback
+
+
+/* Trace of a memory block */
+typedef struct {
+    /* Size of the memory block in bytes */
+    size_t size;
+
+    /* Traceback where the memory block was allocated */
+    traceback_t *traceback;
+} trace_t;
+
+
+#define tracemalloc_traced_memory _PyRuntime.tracemalloc.traced_memory
+#define tracemalloc_peak_traced_memory _PyRuntime.tracemalloc.peak_traced_memory
+#define tracemalloc_filenames _PyRuntime.tracemalloc.filenames
+#define tracemalloc_traceback _PyRuntime.tracemalloc.traceback
+#define tracemalloc_tracebacks _PyRuntime.tracemalloc.tracebacks
+#define tracemalloc_traces _PyRuntime.tracemalloc.traces
+#define tracemalloc_domains _PyRuntime.tracemalloc.domains
+
+
+#ifdef TRACE_DEBUG
+static void
+tracemalloc_error(const char *format, ...)
+{
+    va_list ap;
+    fprintf(stderr, "tracemalloc: ");
+    va_start(ap, format);
+    vfprintf(stderr, format, ap);
+    va_end(ap);
+    fprintf(stderr, "\n");
+    fflush(stderr);
+}
+#endif
+
+
+#if defined(TRACE_RAW_MALLOC)
+#define REENTRANT_THREADLOCAL
+
+#define tracemalloc_reentrant_key _PyRuntime.tracemalloc.reentrant_key
+
+/* Any non-NULL pointer can be used */
+#define REENTRANT Py_True
+
+static int
+get_reentrant(void)
+{
+    void *ptr;
+
+    assert(PyThread_tss_is_created(&tracemalloc_reentrant_key));
+    ptr = PyThread_tss_get(&tracemalloc_reentrant_key);
+    if (ptr != NULL) {
+        assert(ptr == REENTRANT);
+        return 1;
+    }
+    else
+        return 0;
+}
+
+static void
+set_reentrant(int reentrant)
+{
+    assert(reentrant == 0 || reentrant == 1);
+    assert(PyThread_tss_is_created(&tracemalloc_reentrant_key));
+
+    if (reentrant) {
+        assert(!get_reentrant());
+        PyThread_tss_set(&tracemalloc_reentrant_key, REENTRANT);
+    }
+    else {
+        assert(get_reentrant());
+        PyThread_tss_set(&tracemalloc_reentrant_key, NULL);
+    }
+}
+
+#else
+
+/* TRACE_RAW_MALLOC not defined: variable protected by the GIL */
+static int tracemalloc_reentrant = 0;
+
+static int
+get_reentrant(void)
+{
+    return tracemalloc_reentrant;
+}
+
+static void
+set_reentrant(int reentrant)
+{
+    assert(reentrant != tracemalloc_reentrant);
+    tracemalloc_reentrant = reentrant;
+}
+#endif
+
+
+static Py_uhash_t
+hashtable_hash_pyobject(const void *key)
+{
+    PyObject *obj = (PyObject *)key;
+    return PyObject_Hash(obj);
+}
+
+
+static int
+hashtable_compare_unicode(const void *key1, const void *key2)
+{
+    PyObject *obj1 = (PyObject *)key1;
+    PyObject *obj2 = (PyObject *)key2;
+    if (obj1 != NULL && obj2 != NULL) {
+        return (PyUnicode_Compare(obj1, obj2) == 0);
+    }
+    else {
+        return obj1 == obj2;
+    }
+}
+
+
+static Py_uhash_t
+hashtable_hash_uint(const void *key_raw)
+{
+    unsigned int key = (unsigned int)FROM_PTR(key_raw);
+    return (Py_uhash_t)key;
+}
+
+
+static _Py_hashtable_t *
+hashtable_new(_Py_hashtable_hash_func hash_func,
+              _Py_hashtable_compare_func compare_func,
+              _Py_hashtable_destroy_func key_destroy_func,
+              _Py_hashtable_destroy_func value_destroy_func)
+{
+    _Py_hashtable_allocator_t hashtable_alloc = {malloc, free};
+    return _Py_hashtable_new_full(hash_func, compare_func,
+                                  key_destroy_func, value_destroy_func,
+                                  &hashtable_alloc);
+}
+
+
+static void*
+raw_malloc(size_t size)
+{
+    return allocators.raw.malloc(allocators.raw.ctx, size);
+}
+
+static void
+raw_free(void *ptr)
+{
+    allocators.raw.free(allocators.raw.ctx, ptr);
+}
+
+
+static Py_uhash_t
+hashtable_hash_traceback(const void *key)
+{
+    const traceback_t *traceback = (const traceback_t *)key;
+    return traceback->hash;
+}
+
+
+static int
+hashtable_compare_traceback(const void *key1, const void *key2)
+{
+    const traceback_t *traceback1 = (const traceback_t *)key1;
+    const traceback_t *traceback2 = (const traceback_t *)key2;
+
+    if (traceback1->nframe != traceback2->nframe) {
+        return 0;
+    }
+    if (traceback1->total_nframe != traceback2->total_nframe) {
+        return 0;
+    }
+
+    for (int i=0; i < traceback1->nframe; i++) {
+        const frame_t *frame1 = &traceback1->frames[i];
+        const frame_t *frame2 = &traceback2->frames[i];
+
+        if (frame1->lineno != frame2->lineno) {
+            return 0;
+        }
+        if (frame1->filename != frame2->filename) {
+            assert(PyUnicode_Compare(frame1->filename, frame2->filename) != 0);
+            return 0;
+        }
+    }
+    return 1;
+}
+
+
+static void
+tracemalloc_get_frame(_PyInterpreterFrame *pyframe, frame_t *frame)
+{
+    assert(PyCode_Check(pyframe->f_executable));
+    frame->filename = &_Py_STR(anon_unknown);
+    int lineno = PyUnstable_InterpreterFrame_GetLine(pyframe);
+    if (lineno < 0) {
+        lineno = 0;
+    }
+    frame->lineno = (unsigned int)lineno;
+
+    PyObject *filename = filename = ((PyCodeObject *)pyframe->f_executable)->co_filename;
+
+    if (filename == NULL) {
+#ifdef TRACE_DEBUG
+        tracemalloc_error("failed to get the filename of the code object");
+#endif
+        return;
+    }
+
+    if (!PyUnicode_Check(filename)) {
+#ifdef TRACE_DEBUG
+        tracemalloc_error("filename is not a unicode string");
+#endif
+        return;
+    }
+    if (!PyUnicode_IS_READY(filename)) {
+        /* Don't make a Unicode string ready to avoid reentrant calls
+           to tracemalloc_malloc() or tracemalloc_realloc() */
+#ifdef TRACE_DEBUG
+        tracemalloc_error("filename is not a ready unicode string");
+#endif
+        return;
+    }
+
+    /* intern the filename */
+    _Py_hashtable_entry_t *entry;
+    entry = _Py_hashtable_get_entry(tracemalloc_filenames, filename);
+    if (entry != NULL) {
+        filename = (PyObject *)entry->key;
+    }
+    else {
+        /* tracemalloc_filenames is responsible to keep a reference
+           to the filename */
+        if (_Py_hashtable_set(tracemalloc_filenames, Py_NewRef(filename),
+                              NULL) < 0) {
+            Py_DECREF(filename);
+#ifdef TRACE_DEBUG
+            tracemalloc_error("failed to intern the filename");
+#endif
+            return;
+        }
+    }
+
+    /* the tracemalloc_filenames table keeps a reference to the filename */
+    frame->filename = filename;
+}
+
+
+static Py_uhash_t
+traceback_hash(traceback_t *traceback)
+{
+    /* code based on tuplehash() of Objects/tupleobject.c */
+    Py_uhash_t x, y;  /* Unsigned for defined overflow behavior. */
+    int len = traceback->nframe;
+    Py_uhash_t mult = _PyHASH_MULTIPLIER;
+    frame_t *frame;
+
+    x = 0x345678UL;
+    frame = traceback->frames;
+    while (--len >= 0) {
+        y = (Py_uhash_t)PyObject_Hash(frame->filename);
+        y ^= (Py_uhash_t)frame->lineno;
+        frame++;
+
+        x = (x ^ y) * mult;
+        /* the cast might truncate len; that doesn't change hash stability */
+        mult += (Py_uhash_t)(82520UL + len + len);
+    }
+    x ^= traceback->total_nframe;
+    x += 97531UL;
+    return x;
+}
+
+
+static void
+traceback_get_frames(traceback_t *traceback)
+{
+    PyThreadState *tstate = PyGILState_GetThisThreadState();
+    if (tstate == NULL) {
+#ifdef TRACE_DEBUG
+        tracemalloc_error("failed to get the current thread state");
+#endif
+        return;
+    }
+
+    _PyInterpreterFrame *pyframe = _PyThreadState_GetFrame(tstate);
+    while (pyframe) {
+        if (traceback->nframe < tracemalloc_config.max_nframe) {
+            tracemalloc_get_frame(pyframe, &traceback->frames[traceback->nframe]);
+            assert(traceback->frames[traceback->nframe].filename != NULL);
+            traceback->nframe++;
+        }
+        if (traceback->total_nframe < UINT16_MAX) {
+            traceback->total_nframe++;
+        }
+        pyframe = _PyFrame_GetFirstComplete(pyframe->previous);
+    }
+}
+
+
+static traceback_t *
+traceback_new(void)
+{
+    traceback_t *traceback;
+    _Py_hashtable_entry_t *entry;
+
+    assert(PyGILState_Check());
+
+    /* get frames */
+    traceback = tracemalloc_traceback;
+    traceback->nframe = 0;
+    traceback->total_nframe = 0;
+    traceback_get_frames(traceback);
+    if (traceback->nframe == 0)
+        return &tracemalloc_empty_traceback;
+    traceback->hash = traceback_hash(traceback);
+
+    /* intern the traceback */
+    entry = _Py_hashtable_get_entry(tracemalloc_tracebacks, traceback);
+    if (entry != NULL) {
+        traceback = (traceback_t *)entry->key;
+    }
+    else {
+        traceback_t *copy;
+        size_t traceback_size;
+
+        traceback_size = TRACEBACK_SIZE(traceback->nframe);
+
+        copy = raw_malloc(traceback_size);
+        if (copy == NULL) {
+#ifdef TRACE_DEBUG
+            tracemalloc_error("failed to intern the traceback: malloc failed");
+#endif
+            return NULL;
+        }
+        memcpy(copy, traceback, traceback_size);
+
+        if (_Py_hashtable_set(tracemalloc_tracebacks, copy, NULL) < 0) {
+            raw_free(copy);
+#ifdef TRACE_DEBUG
+            tracemalloc_error("failed to intern the traceback: putdata failed");
+#endif
+            return NULL;
+        }
+        traceback = copy;
+    }
+    return traceback;
+}
+
+
+static _Py_hashtable_t*
+tracemalloc_create_traces_table(void)
+{
+    return hashtable_new(_Py_hashtable_hash_ptr,
+                         _Py_hashtable_compare_direct,
+                         NULL, raw_free);
+}
+
+
+static _Py_hashtable_t*
+tracemalloc_create_domains_table(void)
+{
+    return hashtable_new(hashtable_hash_uint,
+                         _Py_hashtable_compare_direct,
+                         NULL,
+                         (_Py_hashtable_destroy_func)_Py_hashtable_destroy);
+}
+
+
+static _Py_hashtable_t*
+tracemalloc_get_traces_table(unsigned int domain)
+{
+    if (domain == DEFAULT_DOMAIN) {
+        return tracemalloc_traces;
+    }
+    else {
+        return _Py_hashtable_get(tracemalloc_domains, TO_PTR(domain));
+    }
+}
+
+
+static void
+tracemalloc_remove_trace(unsigned int domain, uintptr_t ptr)
+{
+    assert(tracemalloc_config.tracing);
+
+    _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
+    if (!traces) {
+        return;
+    }
+
+    trace_t *trace = _Py_hashtable_steal(traces, TO_PTR(ptr));
+    if (!trace) {
+        return;
+    }
+    assert(tracemalloc_traced_memory >= trace->size);
+    tracemalloc_traced_memory -= trace->size;
+    raw_free(trace);
+}
+
+#define REMOVE_TRACE(ptr) \
+            tracemalloc_remove_trace(DEFAULT_DOMAIN, (uintptr_t)(ptr))
+
+
+static int
+tracemalloc_add_trace(unsigned int domain, uintptr_t ptr,
+                      size_t size)
+{
+    assert(tracemalloc_config.tracing);
+
+    traceback_t *traceback = traceback_new();
+    if (traceback == NULL) {
+        return -1;
+    }
+
+    _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
+    if (traces == NULL) {
+        traces = tracemalloc_create_traces_table();
+        if (traces == NULL) {
+            return -1;
+        }
+
+        if (_Py_hashtable_set(tracemalloc_domains, TO_PTR(domain), traces) < 0) {
+            _Py_hashtable_destroy(traces);
+            return -1;
+        }
+    }
+
+    trace_t *trace = _Py_hashtable_get(traces, TO_PTR(ptr));
+    if (trace != NULL) {
+        /* the memory block is already tracked */
+        assert(tracemalloc_traced_memory >= trace->size);
+        tracemalloc_traced_memory -= trace->size;
+
+        trace->size = size;
+        trace->traceback = traceback;
+    }
+    else {
+        trace = raw_malloc(sizeof(trace_t));
+        if (trace == NULL) {
+            return -1;
+        }
+        trace->size = size;
+        trace->traceback = traceback;
+
+        int res = _Py_hashtable_set(traces, TO_PTR(ptr), trace);
+        if (res != 0) {
+            raw_free(trace);
+            return res;
+        }
+    }
+
+    assert(tracemalloc_traced_memory <= SIZE_MAX - size);
+    tracemalloc_traced_memory += size;
+    if (tracemalloc_traced_memory > tracemalloc_peak_traced_memory) {
+        tracemalloc_peak_traced_memory = tracemalloc_traced_memory;
+    }
+    return 0;
+}
+
+#define ADD_TRACE(ptr, size) \
+            tracemalloc_add_trace(DEFAULT_DOMAIN, (uintptr_t)(ptr), size)
+
+
+static void*
+tracemalloc_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize)
+{
+    PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+    void *ptr;
+
+    assert(elsize == 0 || nelem <= SIZE_MAX / elsize);
+
+    if (use_calloc)
+        ptr = alloc->calloc(alloc->ctx, nelem, elsize);
+    else
+        ptr = alloc->malloc(alloc->ctx, nelem * elsize);
+    if (ptr == NULL)
+        return NULL;
+
+    TABLES_LOCK();
+    if (ADD_TRACE(ptr, nelem * elsize) < 0) {
+        /* Failed to allocate a trace for the new memory block */
+        TABLES_UNLOCK();
+        alloc->free(alloc->ctx, ptr);
+        return NULL;
+    }
+    TABLES_UNLOCK();
+    return ptr;
+}
+
+
+static void*
+tracemalloc_realloc(void *ctx, void *ptr, size_t new_size)
+{
+    PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+    void *ptr2;
+
+    ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
+    if (ptr2 == NULL)
+        return NULL;
+
+    if (ptr != NULL) {
+        /* an existing memory block has been resized */
+
+        TABLES_LOCK();
+
+        /* tracemalloc_add_trace() updates the trace if there is already
+           a trace at address ptr2 */
+        if (ptr2 != ptr) {
+            REMOVE_TRACE(ptr);
+        }
+
+        if (ADD_TRACE(ptr2, new_size) < 0) {
+            /* Memory allocation failed. The error cannot be reported to
+               the caller, because realloc() may already have shrunk the
+               memory block and so removed bytes.
+
+               This case is very unlikely: a hash entry has just been
+               released, so the hash table should have at least one free entry.
+
+               The GIL and the table lock ensures that only one thread is
+               allocating memory. */
+            Py_FatalError("tracemalloc_realloc() failed to allocate a trace");
+        }
+        TABLES_UNLOCK();
+    }
+    else {
+        /* new allocation */
+
+        TABLES_LOCK();
+        if (ADD_TRACE(ptr2, new_size) < 0) {
+            /* Failed to allocate a trace for the new memory block */
+            TABLES_UNLOCK();
+            alloc->free(alloc->ctx, ptr2);
+            return NULL;
+        }
+        TABLES_UNLOCK();
+    }
+    return ptr2;
+}
+
+
+static void
+tracemalloc_free(void *ctx, void *ptr)
+{
+    PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+
+    if (ptr == NULL)
+        return;
+
+     /* GIL cannot be locked in PyMem_RawFree() because it would introduce
+        a deadlock in _PyThreadState_DeleteCurrent(). */
+
+    alloc->free(alloc->ctx, ptr);
+
+    TABLES_LOCK();
+    REMOVE_TRACE(ptr);
+    TABLES_UNLOCK();
+}
+
+
+static void*
+tracemalloc_alloc_gil(int use_calloc, void *ctx, size_t nelem, size_t elsize)
+{
+    void *ptr;
+
+    if (get_reentrant()) {
+        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+        if (use_calloc)
+            return alloc->calloc(alloc->ctx, nelem, elsize);
+        else
+            return alloc->malloc(alloc->ctx, nelem * elsize);
+    }
+
+    /* Ignore reentrant call. PyObjet_Malloc() calls PyMem_Malloc() for
+       allocations larger than 512 bytes, don't trace the same memory
+       allocation twice. */
+    set_reentrant(1);
+
+    ptr = tracemalloc_alloc(use_calloc, ctx, nelem, elsize);
+
+    set_reentrant(0);
+    return ptr;
+}
+
+
+static void*
+tracemalloc_malloc_gil(void *ctx, size_t size)
+{
+    return tracemalloc_alloc_gil(0, ctx, 1, size);
+}
+
+
+static void*
+tracemalloc_calloc_gil(void *ctx, size_t nelem, size_t elsize)
+{
+    return tracemalloc_alloc_gil(1, ctx, nelem, elsize);
+}
+
+
+static void*
+tracemalloc_realloc_gil(void *ctx, void *ptr, size_t new_size)
+{
+    void *ptr2;
+
+    if (get_reentrant()) {
+        /* Reentrant call to PyMem_Realloc() and PyMem_RawRealloc().
+           Example: PyMem_RawRealloc() is called internally by pymalloc
+           (_PyObject_Malloc() and  _PyObject_Realloc()) to allocate a new
+           arena (new_arena()). */
+        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+
+        ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
+        if (ptr2 != NULL && ptr != NULL) {
+            TABLES_LOCK();
+            REMOVE_TRACE(ptr);
+            TABLES_UNLOCK();
+        }
+        return ptr2;
+    }
+
+    /* Ignore reentrant call. PyObjet_Realloc() calls PyMem_Realloc() for
+       allocations larger than 512 bytes. Don't trace the same memory
+       allocation twice. */
+    set_reentrant(1);
+
+    ptr2 = tracemalloc_realloc(ctx, ptr, new_size);
+
+    set_reentrant(0);
+    return ptr2;
+}
+
+
+#ifdef TRACE_RAW_MALLOC
+static void*
+tracemalloc_raw_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize)
+{
+    PyGILState_STATE gil_state;
+    void *ptr;
+
+    if (get_reentrant()) {
+        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+        if (use_calloc)
+            return alloc->calloc(alloc->ctx, nelem, elsize);
+        else
+            return alloc->malloc(alloc->ctx, nelem * elsize);
+    }
+
+    /* Ignore reentrant call. PyGILState_Ensure() may call PyMem_RawMalloc()
+       indirectly which would call PyGILState_Ensure() if reentrant are not
+       disabled. */
+    set_reentrant(1);
+
+    gil_state = PyGILState_Ensure();
+    ptr = tracemalloc_alloc(use_calloc, ctx, nelem, elsize);
+    PyGILState_Release(gil_state);
+
+    set_reentrant(0);
+    return ptr;
+}
+
+
+static void*
+tracemalloc_raw_malloc(void *ctx, size_t size)
+{
+    return tracemalloc_raw_alloc(0, ctx, 1, size);
+}
+
+
+static void*
+tracemalloc_raw_calloc(void *ctx, size_t nelem, size_t elsize)
+{
+    return tracemalloc_raw_alloc(1, ctx, nelem, elsize);
+}
+
+
+static void*
+tracemalloc_raw_realloc(void *ctx, void *ptr, size_t new_size)
+{
+    PyGILState_STATE gil_state;
+    void *ptr2;
+
+    if (get_reentrant()) {
+        /* Reentrant call to PyMem_RawRealloc(). */
+        PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx;
+
+        ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
+
+        if (ptr2 != NULL && ptr != NULL) {
+            TABLES_LOCK();
+            REMOVE_TRACE(ptr);
+            TABLES_UNLOCK();
+        }
+        return ptr2;
+    }
+
+    /* Ignore reentrant call. PyGILState_Ensure() may call PyMem_RawMalloc()
+       indirectly which would call PyGILState_Ensure() if reentrant calls are
+       not disabled. */
+    set_reentrant(1);
+
+    gil_state = PyGILState_Ensure();
+    ptr2 = tracemalloc_realloc(ctx, ptr, new_size);
+    PyGILState_Release(gil_state);
+
+    set_reentrant(0);
+    return ptr2;
+}
+#endif   /* TRACE_RAW_MALLOC */
+
+
+static void
+tracemalloc_clear_filename(void *value)
+{
+    PyObject *filename = (PyObject *)value;
+    Py_DECREF(filename);
+}
+
+
+/* reentrant flag must be set to call this function and GIL must be held */
+static void
+tracemalloc_clear_traces(void)
+{
+    /* The GIL protects variables against concurrent access */
+    assert(PyGILState_Check());
+
+    TABLES_LOCK();
+    _Py_hashtable_clear(tracemalloc_traces);
+    _Py_hashtable_clear(tracemalloc_domains);
+    tracemalloc_traced_memory = 0;
+    tracemalloc_peak_traced_memory = 0;
+    TABLES_UNLOCK();
+
+    _Py_hashtable_clear(tracemalloc_tracebacks);
+
+    _Py_hashtable_clear(tracemalloc_filenames);
+}
+
+
+int
+_PyTraceMalloc_Init(void)
+{
+    if (tracemalloc_config.initialized == TRACEMALLOC_FINALIZED) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "the tracemalloc module has been unloaded");
+        return -1;
+    }
+
+    if (tracemalloc_config.initialized == TRACEMALLOC_INITIALIZED)
+        return 0;
+
+    PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
+
+#ifdef REENTRANT_THREADLOCAL
+    if (PyThread_tss_create(&tracemalloc_reentrant_key) != 0) {
+#ifdef MS_WINDOWS
+        PyErr_SetFromWindowsErr(0);
+#else
+        PyErr_SetFromErrno(PyExc_OSError);
+#endif
+        return -1;
+    }
+#endif
+
+#if defined(TRACE_RAW_MALLOC)
+    if (tables_lock == NULL) {
+        tables_lock = PyThread_allocate_lock();
+        if (tables_lock == NULL) {
+            PyErr_SetString(PyExc_RuntimeError, "cannot allocate lock");
+            return -1;
+        }
+    }
+#endif
+
+    tracemalloc_filenames = hashtable_new(hashtable_hash_pyobject,
+                                          hashtable_compare_unicode,
+                                          tracemalloc_clear_filename, NULL);
+
+    tracemalloc_tracebacks = hashtable_new(hashtable_hash_traceback,
+                                           hashtable_compare_traceback,
+                                           NULL, raw_free);
+
+    tracemalloc_traces = tracemalloc_create_traces_table();
+    tracemalloc_domains = tracemalloc_create_domains_table();
+
+    if (tracemalloc_filenames == NULL || tracemalloc_tracebacks == NULL
+       || tracemalloc_traces == NULL || tracemalloc_domains == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
+    tracemalloc_empty_traceback.nframe = 1;
+    tracemalloc_empty_traceback.total_nframe = 1;
+    /* borrowed reference */
+    tracemalloc_empty_traceback.frames[0].filename = &_Py_STR(anon_unknown);
+    tracemalloc_empty_traceback.frames[0].lineno = 0;
+    tracemalloc_empty_traceback.hash = traceback_hash(&tracemalloc_empty_traceback);
+
+    tracemalloc_config.initialized = TRACEMALLOC_INITIALIZED;
+    return 0;
+}
+
+
+static void
+tracemalloc_deinit(void)
+{
+    if (tracemalloc_config.initialized != TRACEMALLOC_INITIALIZED)
+        return;
+    tracemalloc_config.initialized = TRACEMALLOC_FINALIZED;
+
+    _PyTraceMalloc_Stop();
+
+    /* destroy hash tables */
+    _Py_hashtable_destroy(tracemalloc_domains);
+    _Py_hashtable_destroy(tracemalloc_traces);
+    _Py_hashtable_destroy(tracemalloc_tracebacks);
+    _Py_hashtable_destroy(tracemalloc_filenames);
+
+#if defined(TRACE_RAW_MALLOC)
+    if (tables_lock != NULL) {
+        PyThread_free_lock(tables_lock);
+        tables_lock = NULL;
+    }
+#endif
+
+#ifdef REENTRANT_THREADLOCAL
+    PyThread_tss_delete(&tracemalloc_reentrant_key);
+#endif
+}
+
+
+int
+_PyTraceMalloc_Start(int max_nframe)
+{
+    PyMemAllocatorEx alloc;
+    size_t size;
+
+    if (max_nframe < 1 || (unsigned long) max_nframe > MAX_NFRAME) {
+        PyErr_Format(PyExc_ValueError,
+                     "the number of frames must be in range [1; %lu]",
+                     MAX_NFRAME);
+        return -1;
+    }
+
+    if (_PyTraceMalloc_Init() < 0) {
+        return -1;
+    }
+
+    if (tracemalloc_config.tracing) {
+        /* hook already installed: do nothing */
+        return 0;
+    }
+
+    tracemalloc_config.max_nframe = max_nframe;
+
+    /* allocate a buffer to store a new traceback */
+    size = TRACEBACK_SIZE(max_nframe);
+    assert(tracemalloc_traceback == NULL);
+    tracemalloc_traceback = raw_malloc(size);
+    if (tracemalloc_traceback == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
+#ifdef TRACE_RAW_MALLOC
+    alloc.malloc = tracemalloc_raw_malloc;
+    alloc.calloc = tracemalloc_raw_calloc;
+    alloc.realloc = tracemalloc_raw_realloc;
+    alloc.free = tracemalloc_free;
+
+    alloc.ctx = &allocators.raw;
+    PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
+    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &alloc);
+#endif
+
+    alloc.malloc = tracemalloc_malloc_gil;
+    alloc.calloc = tracemalloc_calloc_gil;
+    alloc.realloc = tracemalloc_realloc_gil;
+    alloc.free = tracemalloc_free;
+
+    alloc.ctx = &allocators.mem;
+    PyMem_GetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem);
+    PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &alloc);
+
+    alloc.ctx = &allocators.obj;
+    PyMem_GetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj);
+    PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &alloc);
+
+    /* everything is ready: start tracing Python memory allocations */
+    tracemalloc_config.tracing = 1;
+
+    return 0;
+}
+
+
+void
+_PyTraceMalloc_Stop(void)
+{
+    if (!tracemalloc_config.tracing)
+        return;
+
+    /* stop tracing Python memory allocations */
+    tracemalloc_config.tracing = 0;
+
+    /* unregister the hook on memory allocators */
+#ifdef TRACE_RAW_MALLOC
+    PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
+#endif
+    PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem);
+    PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj);
+
+    tracemalloc_clear_traces();
+
+    /* release memory */
+    raw_free(tracemalloc_traceback);
+    tracemalloc_traceback = NULL;
+}
+
+
+
+static PyObject*
+frame_to_pyobject(frame_t *frame)
+{
+    PyObject *frame_obj, *lineno_obj;
+
+    frame_obj = PyTuple_New(2);
+    if (frame_obj == NULL)
+        return NULL;
+
+    PyTuple_SET_ITEM(frame_obj, 0, Py_NewRef(frame->filename));
+
+    lineno_obj = PyLong_FromUnsignedLong(frame->lineno);
+    if (lineno_obj == NULL) {
+        Py_DECREF(frame_obj);
+        return NULL;
+    }
+    PyTuple_SET_ITEM(frame_obj, 1, lineno_obj);
+
+    return frame_obj;
+}
+
+
+static PyObject*
+traceback_to_pyobject(traceback_t *traceback, _Py_hashtable_t *intern_table)
+{
+    PyObject *frames;
+
+    if (intern_table != NULL) {
+        frames = _Py_hashtable_get(intern_table, (const void *)traceback);
+        if (frames) {
+            return Py_NewRef(frames);
+        }
+    }
+
+    frames = PyTuple_New(traceback->nframe);
+    if (frames == NULL)
+        return NULL;
+
+    for (int i=0; i < traceback->nframe; i++) {
+        PyObject *frame = frame_to_pyobject(&traceback->frames[i]);
+        if (frame == NULL) {
+            Py_DECREF(frames);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(frames, i, frame);
+    }
+
+    if (intern_table != NULL) {
+        if (_Py_hashtable_set(intern_table, traceback, frames) < 0) {
+            Py_DECREF(frames);
+            PyErr_NoMemory();
+            return NULL;
+        }
+        /* intern_table keeps a new reference to frames */
+        Py_INCREF(frames);
+    }
+    return frames;
+}
+
+
+static PyObject*
+trace_to_pyobject(unsigned int domain, const trace_t *trace,
+                  _Py_hashtable_t *intern_tracebacks)
+{
+    PyObject *trace_obj = NULL;
+    PyObject *obj;
+
+    trace_obj = PyTuple_New(4);
+    if (trace_obj == NULL)
+        return NULL;
+
+    obj = PyLong_FromSize_t(domain);
+    if (obj == NULL) {
+        Py_DECREF(trace_obj);
+        return NULL;
+    }
+    PyTuple_SET_ITEM(trace_obj, 0, obj);
+
+    obj = PyLong_FromSize_t(trace->size);
+    if (obj == NULL) {
+        Py_DECREF(trace_obj);
+        return NULL;
+    }
+    PyTuple_SET_ITEM(trace_obj, 1, obj);
+
+    obj = traceback_to_pyobject(trace->traceback, intern_tracebacks);
+    if (obj == NULL) {
+        Py_DECREF(trace_obj);
+        return NULL;
+    }
+    PyTuple_SET_ITEM(trace_obj, 2, obj);
+
+    obj = PyLong_FromUnsignedLong(trace->traceback->total_nframe);
+    if (obj == NULL) {
+        Py_DECREF(trace_obj);
+        return NULL;
+    }
+    PyTuple_SET_ITEM(trace_obj, 3, obj);
+
+    return trace_obj;
+}
+
+
+typedef struct {
+    _Py_hashtable_t *traces;
+    _Py_hashtable_t *domains;
+    _Py_hashtable_t *tracebacks;
+    PyObject *list;
+    unsigned int domain;
+} get_traces_t;
+
+
+static int
+tracemalloc_copy_trace(_Py_hashtable_t *traces,
+                       const void *key, const void *value,
+                       void *user_data)
+{
+    _Py_hashtable_t *traces2 = (_Py_hashtable_t *)user_data;
+
+    trace_t *trace = (trace_t *)value;
+
+    trace_t *trace2 = raw_malloc(sizeof(trace_t));
+    if (trace2 == NULL) {
+        return -1;
+    }
+    *trace2 = *trace;
+    if (_Py_hashtable_set(traces2, key, trace2) < 0) {
+        raw_free(trace2);
+        return -1;
+    }
+    return 0;
+}
+
+
+static _Py_hashtable_t*
+tracemalloc_copy_traces(_Py_hashtable_t *traces)
+{
+    _Py_hashtable_t *traces2 = tracemalloc_create_traces_table();
+    if (traces2 == NULL) {
+        return NULL;
+    }
+
+    int err = _Py_hashtable_foreach(traces,
+                                    tracemalloc_copy_trace,
+                                    traces2);
+    if (err) {
+        _Py_hashtable_destroy(traces2);
+        return NULL;
+    }
+    return traces2;
+}
+
+
+static int
+tracemalloc_copy_domain(_Py_hashtable_t *domains,
+                        const void *key, const void *value,
+                        void *user_data)
+{
+    _Py_hashtable_t *domains2 = (_Py_hashtable_t *)user_data;
+
+    unsigned int domain = (unsigned int)FROM_PTR(key);
+    _Py_hashtable_t *traces = (_Py_hashtable_t *)value;
+
+    _Py_hashtable_t *traces2 = tracemalloc_copy_traces(traces);
+    if (traces2 == NULL) {
+        return -1;
+    }
+    if (_Py_hashtable_set(domains2, TO_PTR(domain), traces2) < 0) {
+        _Py_hashtable_destroy(traces2);
+        return -1;
+    }
+    return 0;
+}
+
+
+static _Py_hashtable_t*
+tracemalloc_copy_domains(_Py_hashtable_t *domains)
+{
+    _Py_hashtable_t *domains2 = tracemalloc_create_domains_table();
+    if (domains2 == NULL) {
+        return NULL;
+    }
+
+    int err = _Py_hashtable_foreach(domains,
+                                    tracemalloc_copy_domain,
+                                    domains2);
+    if (err) {
+        _Py_hashtable_destroy(domains2);
+        return NULL;
+    }
+    return domains2;
+}
+
+
+static int
+tracemalloc_get_traces_fill(_Py_hashtable_t *traces,
+                            const void *key, const void *value,
+                            void *user_data)
+{
+    get_traces_t *get_traces = user_data;
+
+    const trace_t *trace = (const trace_t *)value;
+
+    PyObject *tuple = trace_to_pyobject(get_traces->domain, trace,
+                                        get_traces->tracebacks);
+    if (tuple == NULL) {
+        return 1;
+    }
+
+    int res = PyList_Append(get_traces->list, tuple);
+    Py_DECREF(tuple);
+    if (res < 0) {
+        return 1;
+    }
+
+    return 0;
+}
+
+
+static int
+tracemalloc_get_traces_domain(_Py_hashtable_t *domains,
+                              const void *key, const void *value,
+                              void *user_data)
+{
+    get_traces_t *get_traces = user_data;
+
+    unsigned int domain = (unsigned int)FROM_PTR(key);
+    _Py_hashtable_t *traces = (_Py_hashtable_t *)value;
+
+    get_traces->domain = domain;
+    return _Py_hashtable_foreach(traces,
+                                 tracemalloc_get_traces_fill,
+                                 get_traces);
+}
+
+
+static void
+tracemalloc_pyobject_decref(void *value)
+{
+    PyObject *obj = (PyObject *)value;
+    Py_DECREF(obj);
+}
+
+
+static traceback_t*
+tracemalloc_get_traceback(unsigned int domain, uintptr_t ptr)
+{
+
+    if (!tracemalloc_config.tracing)
+        return NULL;
+
+    trace_t *trace;
+    TABLES_LOCK();
+    _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
+    if (traces) {
+        trace = _Py_hashtable_get(traces, TO_PTR(ptr));
+    }
+    else {
+        trace = NULL;
+    }
+    TABLES_UNLOCK();
+
+    if (!trace) {
+        return NULL;
+    }
+
+    return trace->traceback;
+}
+
+
+#define PUTS(fd, str) (void)_Py_write_noraise(fd, str, (int)strlen(str))
+
+static void
+_PyMem_DumpFrame(int fd, frame_t * frame)
+{
+    PUTS(fd, "  File \"");
+    _Py_DumpASCII(fd, frame->filename);
+    PUTS(fd, "\", line ");
+    _Py_DumpDecimal(fd, frame->lineno);
+    PUTS(fd, "\n");
+}
+
+/* Dump the traceback where a memory block was allocated into file descriptor
+   fd. The function may block on TABLES_LOCK() but it is unlikely. */
+void
+_PyMem_DumpTraceback(int fd, const void *ptr)
+{
+    traceback_t *traceback;
+    int i;
+
+    if (!tracemalloc_config.tracing) {
+        PUTS(fd, "Enable tracemalloc to get the memory block "
+                 "allocation traceback\n\n");
+        return;
+    }
+
+    traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, (uintptr_t)ptr);
+    if (traceback == NULL)
+        return;
+
+    PUTS(fd, "Memory block allocated at (most recent call first):\n");
+    for (i=0; i < traceback->nframe; i++) {
+        _PyMem_DumpFrame(fd, &traceback->frames[i]);
+    }
+    PUTS(fd, "\n");
+}
+
+#undef PUTS
+
+
+static int
+tracemalloc_get_tracemalloc_memory_cb(_Py_hashtable_t *domains,
+                                      const void *key, const void *value,
+                                      void *user_data)
+{
+    const _Py_hashtable_t *traces = value;
+    size_t *size = (size_t*)user_data;
+    *size += _Py_hashtable_size(traces);
+    return 0;
+}
+
+int
+PyTraceMalloc_Track(unsigned int domain, uintptr_t ptr,
+                    size_t size)
+{
+    int res;
+    PyGILState_STATE gil_state;
+
+    if (!tracemalloc_config.tracing) {
+        /* tracemalloc is not tracing: do nothing */
+        return -2;
+    }
+
+    gil_state = PyGILState_Ensure();
+
+    TABLES_LOCK();
+    res = tracemalloc_add_trace(domain, ptr, size);
+    TABLES_UNLOCK();
+
+    PyGILState_Release(gil_state);
+    return res;
+}
+
+
+int
+PyTraceMalloc_Untrack(unsigned int domain, uintptr_t ptr)
+{
+    if (!tracemalloc_config.tracing) {
+        /* tracemalloc is not tracing: do nothing */
+        return -2;
+    }
+
+    TABLES_LOCK();
+    tracemalloc_remove_trace(domain, ptr);
+    TABLES_UNLOCK();
+
+    return 0;
+}
+
+
+void
+_PyTraceMalloc_Fini(void)
+{
+    assert(PyGILState_Check());
+    tracemalloc_deinit();
+}
+
+
+/* If the object memory block is already traced, update its trace
+   with the current Python traceback.
+
+   Do nothing if tracemalloc is not tracing memory allocations
+   or if the object memory block is not already traced. */
+int
+_PyTraceMalloc_NewReference(PyObject *op)
+{
+    assert(PyGILState_Check());
+
+    if (!tracemalloc_config.tracing) {
+        /* tracemalloc is not tracing: do nothing */
+        return -1;
+    }
+
+    PyTypeObject *type = Py_TYPE(op);
+    const size_t presize = _PyType_PreHeaderSize(type);
+    uintptr_t ptr = (uintptr_t)((char *)op - presize);
+
+    int res = -1;
+
+    TABLES_LOCK();
+    trace_t *trace = _Py_hashtable_get(tracemalloc_traces, TO_PTR(ptr));
+    if (trace != NULL) {
+        /* update the traceback of the memory block */
+        traceback_t *traceback = traceback_new();
+        if (traceback != NULL) {
+            trace->traceback = traceback;
+            res = 0;
+        }
+    }
+    /* else: cannot track the object, its memory block size is unknown */
+    TABLES_UNLOCK();
+
+    return res;
+}
+
+
+PyObject*
+_PyTraceMalloc_GetTraceback(unsigned int domain, uintptr_t ptr)
+{
+    traceback_t *traceback;
+
+    traceback = tracemalloc_get_traceback(domain, ptr);
+    if (traceback == NULL)
+        Py_RETURN_NONE;
+
+    return traceback_to_pyobject(traceback, NULL);
+}
+
+int
+_PyTraceMalloc_IsTracing(void)
+{
+    return tracemalloc_config.tracing;
+}
+
+void
+_PyTraceMalloc_ClearTraces(void)
+{
+
+    if (!tracemalloc_config.tracing) {
+        return;
+    }
+    set_reentrant(1);
+    tracemalloc_clear_traces();
+    set_reentrant(0);
+}
+
+PyObject *
+_PyTraceMalloc_GetTraces(void)
+{
+    get_traces_t get_traces;
+    get_traces.domain = DEFAULT_DOMAIN;
+    get_traces.traces = NULL;
+    get_traces.domains = NULL;
+    get_traces.tracebacks = NULL;
+    get_traces.list = PyList_New(0);
+    if (get_traces.list == NULL)
+        goto error;
+
+    if (!tracemalloc_config.tracing)
+        return get_traces.list;
+
+    /* the traceback hash table is used temporarily to intern traceback tuple
+       of (filename, lineno) tuples */
+    get_traces.tracebacks = hashtable_new(_Py_hashtable_hash_ptr,
+                                          _Py_hashtable_compare_direct,
+                                          NULL, tracemalloc_pyobject_decref);
+    if (get_traces.tracebacks == NULL) {
+        goto no_memory;
+    }
+
+    // Copy all traces so tracemalloc_get_traces_fill() doesn't have to disable
+    // temporarily tracemalloc which would impact other threads and so would
+    // miss allocations while get_traces() is called.
+    TABLES_LOCK();
+    get_traces.traces = tracemalloc_copy_traces(tracemalloc_traces);
+    TABLES_UNLOCK();
+
+    if (get_traces.traces == NULL) {
+        goto no_memory;
+    }
+
+    TABLES_LOCK();
+    get_traces.domains = tracemalloc_copy_domains(tracemalloc_domains);
+    TABLES_UNLOCK();
+
+    if (get_traces.domains == NULL) {
+        goto no_memory;
+    }
+
+    // Convert traces to a list of tuples
+    set_reentrant(1);
+    int err = _Py_hashtable_foreach(get_traces.traces,
+                                    tracemalloc_get_traces_fill,
+                                    &get_traces);
+    if (!err) {
+        err = _Py_hashtable_foreach(get_traces.domains,
+                                    tracemalloc_get_traces_domain,
+                                    &get_traces);
+    }
+    set_reentrant(0);
+    if (err) {
+        goto error;
+    }
+
+    goto finally;
+
+no_memory:
+    PyErr_NoMemory();
+
+error:
+    Py_CLEAR(get_traces.list);
+
+finally:
+    if (get_traces.tracebacks != NULL) {
+        _Py_hashtable_destroy(get_traces.tracebacks);
+    }
+    if (get_traces.traces != NULL) {
+        _Py_hashtable_destroy(get_traces.traces);
+    }
+    if (get_traces.domains != NULL) {
+        _Py_hashtable_destroy(get_traces.domains);
+    }
+
+    return get_traces.list;
+}
+
+PyObject *
+_PyTraceMalloc_GetObjectTraceback(PyObject *obj)
+/*[clinic end generated code: output=41ee0553a658b0aa input=29495f1b21c53212]*/
+{
+    PyTypeObject *type;
+    traceback_t *traceback;
+
+    type = Py_TYPE(obj);
+    const size_t presize = _PyType_PreHeaderSize(type);
+    uintptr_t ptr = (uintptr_t)((char *)obj - presize);
+
+    traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, ptr);
+    if (traceback == NULL) {
+        Py_RETURN_NONE;
+    }
+
+    return traceback_to_pyobject(traceback, NULL);
+}
+
+int _PyTraceMalloc_GetTracebackLimit(void) {
+    return tracemalloc_config.max_nframe;
+}
+
+size_t
+_PyTraceMalloc_GetMemory(void) {
+
+    size_t size;
+
+    size = _Py_hashtable_size(tracemalloc_tracebacks);
+    size += _Py_hashtable_size(tracemalloc_filenames);
+
+    TABLES_LOCK();
+    size += _Py_hashtable_size(tracemalloc_traces);
+    _Py_hashtable_foreach(tracemalloc_domains,
+                          tracemalloc_get_tracemalloc_memory_cb, &size);
+    TABLES_UNLOCK();
+    return size;
+}
+
+
+PyObject *
+_PyTraceMalloc_GetTracedMemory(void)
+{
+    Py_ssize_t size, peak_size;
+
+    if (!tracemalloc_config.tracing)
+        return Py_BuildValue("ii", 0, 0);
+
+    TABLES_LOCK();
+    size = tracemalloc_traced_memory;
+    peak_size = tracemalloc_peak_traced_memory;
+    TABLES_UNLOCK();
+
+    return Py_BuildValue("nn", size, peak_size);
+}
+
+void
+_PyTraceMalloc_ResetPeak(void)
+{
+    if (!tracemalloc_config.tracing) {
+        return;
+    }
+    TABLES_LOCK();
+    tracemalloc_peak_traced_memory = tracemalloc_traced_memory;
+    TABLES_UNLOCK();
+}
diff --git a/Python/vm-state.md b/Python/vm-state.md
new file mode 100644
index 00000000000000..4c68ba3b575cc8
--- /dev/null
+++ b/Python/vm-state.md
@@ -0,0 +1,90 @@
+# Python VM State
+
+## Definition of Tiers
+
+- **Tier 1** is the classic Python bytecode interpreter.
+  This includes the specializing adaptive interpreter described in [PEP 659](https://peps.python.org/pep-0659/) and introduced in Python 3.11.
+- **Tier 2**, also known as the micro-instruction ("uop") interpreter, is a new interpreter with a different instruction format.
+  It will be introduced in Python 3.13, and also forms the basis for a JIT using copy-and-patch technology that is likely to be introduced at the same time (but, unlike the Tier 2 interpreter, hasn't landed in the main branch yet).
+
+# Frame state
+
+Almost all interpreter state is nominally stored in the frame structure.
+A pointer to the current frame is held in `frame`. It contains:
+
+- **local variables** (a.k.a. "fast locals")
+- **evaluation stack** (tacked onto the end of the locals)
+- **stack top** (an integer giving the top of the evaluation stack)
+- **instruction pointer**
+- **code object**, which holds things like the array of instructions, lists of constants and names referenced by certain instructions, the exception handling table, and the table that translates instruction offsets to line numbers
+- **return offset**, only relevant during calls, telling the interpreter where to return
+
+There are some other fields in the frame structure of less importance; notably frames are linked together in a singly-linked list via the `previous` pointer, pointing from callee to caller.
+The frame also holds a pointer to the current function, globals, builtins, and the locals converted to dict (used to support the `locals()` built-in).
+
+## Fast locals and evaluation stack
+
+The frame contains a single array of object pointers, `localsplus`, which contains both the fast locals and the stack.
+The top of the stack, including the locals, is indicated by `stacktop`.
+For example, in a function with three locals, if the stack contains one value, `frame->stacktop == 4`.
+
+The interpreters share an implementation which uses the same memory but caches the depth (as a pointer) in a C local, `stack_pointer`.
+We aren't sure yet exactly how the JIT will implement the stack; likely some of the values near the top of the stack will be held in registers.
+
+## Instruction pointer
+
+The canonical, in-memory, representation of the instruction pointer is `frame->instr_ptr`.
+It always points to an instruction in the bytecode array of the frame's code object.
+Dispatching on `frame->instr_ptr` would be very inefficient, so in Tier 1 we cache the upcoming value of `frame->instr_ptr` in the C local `next_instr`.
+
+## Tier 2
+
+- `stack_pointer` is the same as in Tier 1 (but may be different in the JIT).
+- At runtime we do not need a cache representation of `frame->instr_ptr`, as all stores to `frame->instr_ptr` are explicit.
+- During optimization we track the value of `frame->instr_ptr`, emitting `_SET_IP` whenever `frame->instr_ptr` would have been updated.
+
+The Tier 2 instruction pointer is strictly internal to the Tier 2 interpreter, so isn't visible to any other part of the code.
+
+## Unwinding
+
+Unwinding uses exception tables to find the next point at which normal execution can occur, or fail if there are no exception handlers.
+During unwinding both the stack and the instruction pointer should be in their canonical, in-memory representation.
+
+## Jumps in bytecode
+
+The implementation of jumps within a single Tier 2 superblock/trace is just that, an implementation.
+The implementation in the JIT and in the Tier 2 interpreter will necessarily be different.
+What is in common is that representation in the Tier 2 optimizer.
+
+We need the following types of jumps:
+
+- Conditional branches within the superblock. These must only go forwards and be within the superblock.
+- Terminal exits. These go back to the Tier 1 interpreter and cannot be modified.
+- Loop end jumps. These go backwards, must be within the superblock, cannot be modified, and can only go to the start of the superblock.
+- Patchable exits. These initially exit to code that tracks whether the exit is hot (presumably with a counter) and can be patched.
+
+Currently, we don't have patchable exits.
+Patching exits should be fairly straightforward in the interpreter.
+It will be more complex in the JIT.
+
+(We might also consider deoptimizations as a separate jump type.)
+
+# Thread state and interpreter state
+
+Another important piece of VM state is the **thread state**, held in `tstate`.
+The current frame pointer, `frame`, is always equal to `tstate->current_frame`.
+The thread state also holds the exception state (`tstate->exc_info`) and the recursion counters (`tstate->c_recursion_remaining` and `tstate->py_recursion_remaining`).
+
+The thread state is also used to access the **interpreter state** (`tstate->interp`), which is important since the "eval breaker" flags are stored there (`tstate->interp->ceval.eval_breaker`, an "atomic" variable), as well as the "PEP 523 function" (`tstate->interp->eval_frame`).
+The interpreter state also holds the optimizer state (`optimizer` and some counters).
+Note that the eval breaker may be moved to the thread state soon as part of the multicore (PEP 703) work.
+
+# Tier 2 IR format
+
+The tier 2 IR (Internal Representation) format is also the basis for the Tier 2 interpreter (though the two formats may eventually differ). This format is also used as the input to the machine code generator (the JIT compiler).
+
+Tier 2 IR entries are all the same size; there is no equivalent to `EXTENDED_ARG` or trailing inline cache entries. Each instruction is a struct with the following fields (all integers of varying sizes):
+
+- **opcode**: Sometimes the same as a Tier 1 opcode, sometimes a separate micro opcode. Tier 2 opcodes are 9 bits (as opposed to Tier 1 opcodes, which fit in 8 bits). By convention, Tier 2 opcode names start with `_`.
+- **oparg**: The argument. Usually the same as the Tier 1 oparg after expansion of `EXTENDED_ARG` prefixes. Up to 32 bits.
+- **operand**: An aditional argument, Typically the value of *one* cache item from the Tier 1 inline cache, up to 64 bits.
diff --git a/README.rst b/README.rst
index 06c4f0a1fa3917..4c8602c97ac8ef 100644
--- a/README.rst
+++ b/README.rst
@@ -1,4 +1,4 @@
-This is Python version 3.12.0 alpha 7
+This is Python version 3.13.0 alpha 2
 =====================================
 
 .. image:: https://github.com/python/cpython/workflows/Tests/badge.svg
@@ -76,6 +76,9 @@ to macOS framework and universal builds.  Refer to `Mac/README.rst
 On Windows, see `PCbuild/readme.txt
 <https://github.com/python/cpython/blob/main/PCbuild/readme.txt>`_.
 
+To build Windows installer, see `Tools/msi/README.txt
+<https://github.com/python/cpython/blob/main/Tools/msi/README.txt>`_.
+
 If you wish, you can create a subdirectory and invoke configure from there.
 For example::
 
@@ -133,7 +136,7 @@ What's New
 ----------
 
 We have a comprehensive overview of the changes in the `What's New in Python
-3.12 <https://docs.python.org/3.12/whatsnew/3.12.html>`_ document.  For a more
+3.13 <https://docs.python.org/3.13/whatsnew/3.13.html>`_ document.  For a more
 detailed change log, read `Misc/NEWS
 <https://github.com/python/cpython/tree/main/Misc/NEWS.d>`_, but a full
 accounting of changes can only be gleaned from the `commit history
@@ -146,7 +149,7 @@ entitled "Installing multiple versions".
 Documentation
 -------------
 
-`Documentation for Python 3.12 <https://docs.python.org/3.12/>`_ is online,
+`Documentation for Python 3.13 <https://docs.python.org/3.13/>`_ is online,
 updated daily.
 
 It can also be downloaded in many formats for faster access.  The documentation
@@ -177,7 +180,7 @@ is printed about a failed test or a traceback or core dump is produced,
 something is wrong.
 
 By default, tests are prevented from overusing resources like disk space and
-memory.  To enable these tests, run ``make testall``.
+memory.  To enable these tests, run ``make buildbottest``.
 
 If any tests fail, you can re-run the failing test(s) in verbose mode.  For
 example, if ``test_os`` and ``test_gdb`` failed, you can run::
@@ -206,39 +209,15 @@ intend to install multiple versions using the same prefix you must decide which
 version (if any) is your "primary" version.  Install that version using ``make
 install``.  Install all other versions using ``make altinstall``.
 
-For example, if you want to install Python 2.7, 3.6, and 3.12 with 3.12 being the
-primary version, you would execute ``make install`` in your 3.12 build directory
+For example, if you want to install Python 2.7, 3.6, and 3.13 with 3.13 being the
+primary version, you would execute ``make install`` in your 3.13 build directory
 and ``make altinstall`` in the others.
 
 
-Issue Tracker and Mailing List
-------------------------------
-
-Bug reports are welcome!  You can use Github to `report bugs
-<https://github.com/python/cpython/issues>`_, and/or `submit pull requests
-<https://github.com/python/cpython/pulls>`_.
-
-You can also follow development discussion on the `python-dev mailing list
-<https://mail.python.org/mailman/listinfo/python-dev/>`_.
-
-
-Proposals for enhancement
--------------------------
-
-If you have a proposal to change Python, you may want to send an email to the
-`comp.lang.python`_ or `python-ideas`_ mailing lists for initial feedback.  A
-Python Enhancement Proposal (PEP) may be submitted if your idea gains ground.
-All current PEPs, as well as guidelines for submitting a new PEP, are listed at
-`peps.python.org <https://peps.python.org/>`_.
-
-.. _python-ideas: https://mail.python.org/mailman/listinfo/python-ideas/
-.. _comp.lang.python: https://mail.python.org/mailman/listinfo/python-list
-
-
 Release Schedule
 ----------------
 
-See :pep:`693` for Python 3.12 release details.
+See :pep:`719` for Python 3.13 release details.
 
 
 Copyright and License Information
diff --git a/Tools/README b/Tools/README
index e51624f453c5bb..9c4b6d86e990ba 100644
--- a/Tools/README
+++ b/Tools/README
@@ -39,10 +39,8 @@ patchcheck      Tools for checking and applying patches to the Python source cod
 
 peg_generator   PEG-based parser generator (pegen) used for new parser.
 
-scripts         A number of useful single-file programs, e.g. tabnanny.py
-                by Tim Peters, which checks for inconsistent mixing of
-                tabs and spaces, and 2to3, which converts Python 2 code
-                to Python 3 code.
+scripts         A number of useful single-file programs, e.g. run_tests.py
+                which runs the Python test suite.
 
 ssl             Scripts to generate ssl_data.h from OpenSSL sources, and run
                 tests against multiple installations of OpenSSL and LibreSSL.
diff --git a/Tools/build/check_extension_modules.py b/Tools/build/check_extension_modules.py
index 59239c62e2ef34..a9fee4981ea915 100644
--- a/Tools/build/check_extension_modules.py
+++ b/Tools/build/check_extension_modules.py
@@ -50,7 +50,6 @@
 
 # Windows-only modules
 WINDOWS_MODULES = {
-    "_msi",
     "_overlapped",
     "_testconsole",
     "_winapi",
diff --git a/Tools/build/deepfreeze.py b/Tools/build/deepfreeze.py
index b084d3e457f782..218c64e13374e6 100644
--- a/Tools/build/deepfreeze.py
+++ b/Tools/build/deepfreeze.py
@@ -6,7 +6,6 @@
 by Python 3.10, and 3.11 features are not available.
 """
 import argparse
-import ast
 import builtins
 import collections
 import contextlib
@@ -17,13 +16,13 @@
 from typing import Dict, FrozenSet, TextIO, Tuple
 
 import umarshal
-from generate_global_objects import get_identifiers_and_strings
+
+ROOT = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
 
 verbose = False
-identifiers, strings = get_identifiers_and_strings()
 
-# This must be kept in sync with opcode.py
-RESUME = 151
+# This must be kept in sync with Tools/cases_generator/generate_cases.py
+RESUME = 149
 
 def isprintable(b: bytes) -> bool:
     return all(0x20 <= c < 0x7f for c in b)
@@ -114,13 +113,28 @@ def __init__(self, file: TextIO) -> None:
         self.hits, self.misses = 0, 0
         self.finis: list[str] = []
         self.inits: list[str] = []
+        self.identifiers, self.strings = self.get_identifiers_and_strings()
         self.write('#include "Python.h"')
+        self.write('#include "internal/pycore_object.h"')
         self.write('#include "internal/pycore_gc.h"')
         self.write('#include "internal/pycore_code.h"')
         self.write('#include "internal/pycore_frame.h"')
         self.write('#include "internal/pycore_long.h"')
         self.write("")
 
+    def get_identifiers_and_strings(self) -> tuple[set[str], dict[str, str]]:
+        filename = os.path.join(ROOT, "Include", "internal", "pycore_global_strings.h")
+        with open(filename) as fp:
+            lines = fp.readlines()
+        identifiers: set[str] = set()
+        strings: dict[str, str] = {}
+        for line in lines:
+            if m := re.search(r"STRUCT_FOR_ID\((\w+)\)", line):
+                identifiers.add(m.group(1))
+            if m := re.search(r'STRUCT_FOR_STR\((\w+), "(.*?)"\)', line):
+                strings[m.group(2)] = m.group(1)
+        return identifiers, strings
+
     @contextlib.contextmanager
     def indent(self) -> None:
         save_level = self.level
@@ -141,14 +155,10 @@ def block(self, prefix: str, suffix: str = "") -> None:
         self.write("}" + suffix)
 
     def object_head(self, typename: str) -> None:
-        with self.block(".ob_base =", ","):
-            self.write(f".ob_refcnt = _Py_IMMORTAL_REFCNT,")
-            self.write(f".ob_type = &{typename},")
+        self.write(f".ob_base = _PyObject_HEAD_INIT(&{typename}),")
 
     def object_var_head(self, typename: str, size: int) -> None:
-        with self.block(".ob_base =", ","):
-            self.object_head(typename)
-            self.write(f".ob_size = {size},")
+        self.write(f".ob_base = _PyVarObject_HEAD_INIT(&{typename}, {size}),")
 
     def field(self, obj: object, name: str) -> None:
         self.write(f".{name} = {getattr(obj, name)},")
@@ -171,9 +181,9 @@ def generate_bytes(self, name: str, b: bytes) -> str:
         return f"& {name}.ob_base.ob_base"
 
     def generate_unicode(self, name: str, s: str) -> str:
-        if s in strings:
-            return f"&_Py_STR({strings[s]})"
-        if s in identifiers:
+        if s in self.strings:
+            return f"&_Py_STR({self.strings[s]})"
+        if s in self.identifiers:
             return f"&_Py_ID({s})"
         if len(s) == 1:
             c = ord(s)
@@ -208,6 +218,7 @@ def generate_unicode(self, name: str, s: str) -> str:
                         self.write(".kind = 1,")
                         self.write(".compact = 1,")
                         self.write(".ascii = 1,")
+                        self.write(".statically_allocated = 1,")
                 self.write(f"._data = {make_string_literal(s.encode('ascii'))},")
                 return f"& {name}._ascii.ob_base"
             else:
@@ -220,6 +231,7 @@ def generate_unicode(self, name: str, s: str) -> str:
                             self.write(f".kind = {kind},")
                             self.write(".compact = 1,")
                             self.write(".ascii = 0,")
+                            self.write(".statically_allocated = 1,")
                     utf8 = s.encode('utf-8')
                     self.write(f'.utf8 = {make_string_literal(utf8)},')
                     self.write(f'.utf8_length = {len(utf8)},')
@@ -282,10 +294,12 @@ def generate_code(self, name: str, code: types.CodeType) -> str:
             self.write(f".co_linetable = {co_linetable},")
             self.write(f"._co_cached = NULL,")
             self.write(f".co_code_adaptive = {co_code_adaptive},")
-            for i, op in enumerate(code.co_code[::2]):
+            first_traceable = 0
+            for op in code.co_code[::2]:
                 if op == RESUME:
-                    self.write(f"._co_firsttraceable = {i},")
                     break
+                first_traceable += 1
+            self.write(f"._co_firsttraceable = {first_traceable},")
         name_as_code = f"(PyCodeObject *)&{name}"
         self.finis.append(f"_PyStaticCode_Fini({name_as_code});")
         self.inits.append(f"_PyStaticCode_Init({name_as_code})")
@@ -439,12 +453,10 @@ def is_frozen_header(source: str) -> bool:
 
 
 def decode_frozen_data(source: str) -> types.CodeType:
-    lines = source.splitlines()
-    while lines and re.match(FROZEN_DATA_LINE, lines[0]) is None:
-        del lines[0]
-    while lines and re.match(FROZEN_DATA_LINE, lines[-1]) is None:
-        del lines[-1]
-    values: Tuple[int, ...] = ast.literal_eval("".join(lines).strip())
+    values: list[int] = []
+    for line in source.splitlines():
+        if re.match(FROZEN_DATA_LINE, line):
+            values.extend([int(x) for x in line.split(",") if x.strip()])
     data = bytes(values)
     return umarshal.loads(data)
 
@@ -476,7 +488,10 @@ def generate(args: list[str], output: TextIO) -> None:
 parser = argparse.ArgumentParser()
 parser.add_argument("-o", "--output", help="Defaults to deepfreeze.c", default="deepfreeze.c")
 parser.add_argument("-v", "--verbose", action="store_true", help="Print diagnostics")
-parser.add_argument('args', nargs="+", help="Input file and module name (required) in file:modname format")
+group = parser.add_mutually_exclusive_group(required=True)
+group.add_argument("-f", "--file", help="read rule lines from a file")
+group.add_argument('args', nargs="*", default=(),
+                   help="Input file and module name (required) in file:modname format")
 
 @contextlib.contextmanager
 def report_time(label: str):
@@ -494,9 +509,18 @@ def main() -> None:
     args = parser.parse_args()
     verbose = args.verbose
     output = args.output
+
+    if args.file:
+        if verbose:
+            print(f"Reading targets from {args.file}")
+        with open(args.file, "rt", encoding="utf-8-sig") as fin:
+            rules = [x.strip() for x in fin]
+    else:
+        rules = args.args
+
     with open(output, "w", encoding="utf-8") as file:
         with report_time("generate"):
-            generate(args.args, file)
+            generate(rules, file)
     if verbose:
         print(f"Wrote {os.path.getsize(output)} bytes to {output}")
 
diff --git a/Tools/build/freeze_modules.py b/Tools/build/freeze_modules.py
index ee4dd2f8682ba4..6a54f45bac3a86 100644
--- a/Tools/build/freeze_modules.py
+++ b/Tools/build/freeze_modules.py
@@ -21,6 +21,7 @@
 # .gitattributes and .gitignore files needs to be updated.
 FROZEN_MODULES_DIR = os.path.join(ROOT_DIR, 'Python', 'frozen_modules')
 DEEPFROZEN_MODULES_DIR = os.path.join(ROOT_DIR, 'Python', 'deepfreeze')
+DEEPFREEZE_MAPPING_FNAME = 'deepfreeze_mappings.txt'
 
 FROZEN_FILE = os.path.join(ROOT_DIR, 'Python', 'frozen.c')
 MAKEFILE = os.path.join(ROOT_DIR, 'Makefile.pre.in')
@@ -467,17 +468,27 @@ def replace_block(lines, start_marker, end_marker, replacements, file):
     return lines[:start_pos + 1] + replacements + lines[end_pos:]
 
 
-def regen_frozen(modules, frozen_modules: bool):
+class UniqueList(list):
+    def __init__(self):
+        self._seen = set()
+
+    def append(self, item):
+        if item in self._seen:
+            return
+        super().append(item)
+        self._seen.add(item)
+
+
+def regen_frozen(modules):
     headerlines = []
     parentdir = os.path.dirname(FROZEN_FILE)
-    if frozen_modules:
-        for src in _iter_sources(modules):
-            # Adding a comment to separate sections here doesn't add much,
-            # so we don't.
-            header = relpath_for_posix_display(src.frozenfile, parentdir)
-            headerlines.append(f'#include "{header}"')
-
-    externlines = []
+    for src in _iter_sources(modules):
+        # Adding a comment to separate sections here doesn't add much,
+        # so we don't.
+        header = relpath_for_posix_display(src.frozenfile, parentdir)
+        headerlines.append(f'#include "{header}"')
+
+    externlines = UniqueList()
     bootstraplines = []
     stdliblines = []
     testlines = []
@@ -504,14 +515,9 @@ def regen_frozen(modules, frozen_modules: bool):
         get_code_name = "_Py_get_%s_toplevel" % code_name
         externlines.append("extern PyObject *%s(void);" % get_code_name)
 
-        symbol = mod.symbol
         pkg = 'true' if mod.ispkg else 'false'
-        if not frozen_modules:
-            line = ('{"%s", NULL, 0, %s, GET_CODE(%s)},'
-                ) % (mod.name, pkg, code_name)
-        else:
-            line = ('{"%s", %s, (int)sizeof(%s), %s, GET_CODE(%s)},'
-                ) % (mod.name, symbol, symbol, pkg, code_name)
+        size = f"(int)sizeof({mod.symbol})"
+        line = f'{{"{mod.name}", {mod.symbol}, {size}, {pkg}}},'
         lines.append(line)
 
         if mod.isalias:
@@ -585,7 +591,7 @@ def regen_makefile(modules):
     pyfiles = []
     frozenfiles = []
     rules = ['']
-    deepfreezerules = ["Python/deepfreeze/deepfreeze.c: $(DEEPFREEZE_DEPS)",
+    deepfreezerules = ["$(DEEPFREEZE_C): $(DEEPFREEZE_DEPS)",
                        "\t$(PYTHON_FOR_FREEZE) $(srcdir)/Tools/build/deepfreeze.py \\"]
     for src in _iter_sources(modules):
         frozen_header = relpath_for_posix_display(src.frozenfile, ROOT_DIR)
@@ -651,7 +657,9 @@ def regen_pcbuild(modules):
     projlines = []
     filterlines = []
     corelines = []
-    deepfreezerules = ['\t<Exec Command=\'$(PythonForBuild) "$(PySourcePath)Tools\\build\\deepfreeze.py" ^']
+    deepfreezemappingsfile = f'$(IntDir)\\{DEEPFREEZE_MAPPING_FNAME}'
+    deepfreezerules = [f'    <Exec Command=\'$(PythonForBuild) "$(PySourcePath)Tools\\build\\deepfreeze.py" -f "{deepfreezemappingsfile}" -o "$(PySourcePath)Python\\deepfreeze\\deepfreeze.c"\' />']
+    deepfreezemappings = []
     for src in _iter_sources(modules):
         pyfile = relpath_for_windows_display(src.pyfile, ROOT_DIR)
         header = relpath_for_windows_display(src.frozenfile, ROOT_DIR)
@@ -665,8 +673,7 @@ def regen_pcbuild(modules):
         filterlines.append(f'    <None Include="..\\{pyfile}">')
         filterlines.append('      <Filter>Python Files</Filter>')
         filterlines.append('    </None>')
-        deepfreezerules.append(f'\t\t "$(PySourcePath){header}:{src.frozenid}" ^')
-    deepfreezerules.append('\t\t "-o" "$(PySourcePath)Python\\deepfreeze\\deepfreeze.c"\'/>' )
+        deepfreezemappings.append(f'    <FrozenModule Include="$(PySourcePath)\\{header}" FrozenId="{src.frozenid}" />\n')
 
     corelines.append(f'    <ClCompile Include="..\\Python\\deepfreeze\\deepfreeze.c" />')
 
@@ -681,6 +688,26 @@ def regen_pcbuild(modules):
             PCBUILD_PROJECT,
         )
         outfile.writelines(lines)
+    with updating_file_with_tmpfile(PCBUILD_PROJECT) as (infile, outfile):
+        lines = infile.readlines()
+        lines = replace_block(
+            lines,
+            '<!-- BEGIN freeze mappings -->',
+            '<!-- END freeze mappings -->',
+            deepfreezemappings,
+            PCBUILD_PROJECT,
+        )
+        outfile.writelines(lines)
+    with updating_file_with_tmpfile(PCBUILD_PROJECT) as (infile, outfile):
+        lines = infile.readlines()
+        lines = replace_block(
+            lines,
+            '<!-- BEGIN freeze mapping file -->',
+            '<!-- END freeze mapping file -->',
+            [deepfreezemappingsfile, ],
+            PCBUILD_PROJECT,
+        )
+        outfile.writelines(lines)
     with updating_file_with_tmpfile(PCBUILD_PROJECT) as (infile, outfile):
         lines = infile.readlines()
         lines = replace_block(
@@ -718,20 +745,14 @@ def regen_pcbuild(modules):
 #######################################
 # the script
 
-parser = argparse.ArgumentParser()
-parser.add_argument("--frozen-modules", action="store_true",
-        help="Use both frozen and deepfrozen modules. (default: uses only deepfrozen modules)")
-
 def main():
-    args = parser.parse_args()
-    frozen_modules: bool = args.frozen_modules
     # Expand the raw specs, preserving order.
     modules = list(parse_frozen_specs())
 
     # Regen build-related files.
     regen_makefile(modules)
     regen_pcbuild(modules)
-    regen_frozen(modules, frozen_modules)
+    regen_frozen(modules)
 
 
 if __name__ == '__main__':
diff --git a/Tools/build/generate_opcode_h.py b/Tools/build/generate_opcode_h.py
deleted file mode 100644
index 5be981005725bf..00000000000000
--- a/Tools/build/generate_opcode_h.py
+++ /dev/null
@@ -1,236 +0,0 @@
-# This script generates the opcode.h header file.
-
-import sys
-import tokenize
-
-SCRIPT_NAME = "Tools/build/generate_opcode_h.py"
-PYTHON_OPCODE = "Lib/opcode.py"
-
-header = f"""
-// Auto-generated by {SCRIPT_NAME} from {PYTHON_OPCODE}
-
-#ifndef Py_OPCODE_H
-#define Py_OPCODE_H
-#ifdef __cplusplus
-extern "C" {{
-#endif
-
-
-/* Instruction opcodes for compiled code */
-""".lstrip()
-
-footer = """
-
-#define IS_PSEUDO_OPCODE(op) (((op) >= MIN_PSEUDO_OPCODE) && ((op) <= MAX_PSEUDO_OPCODE))
-
-#ifdef __cplusplus
-}
-#endif
-#endif /* !Py_OPCODE_H */
-"""
-
-internal_header = f"""
-// Auto-generated by {SCRIPT_NAME} from {PYTHON_OPCODE}
-
-#ifndef Py_INTERNAL_OPCODE_H
-#define Py_INTERNAL_OPCODE_H
-#ifdef __cplusplus
-extern "C" {{
-#endif
-
-#ifndef Py_BUILD_CORE
-#  error "this header requires Py_BUILD_CORE define"
-#endif
-
-#include "opcode.h"
-""".lstrip()
-
-internal_footer = """
-#ifdef __cplusplus
-}
-#endif
-#endif  // !Py_INTERNAL_OPCODE_H
-"""
-
-intrinsic_header = f"""
-// Auto-generated by {SCRIPT_NAME} from {PYTHON_OPCODE}
-
-""".lstrip()
-
-intrinsic_footer = """
-typedef PyObject *(*instrinsic_func1)(PyThreadState* tstate, PyObject *value);
-typedef PyObject *(*instrinsic_func2)(PyThreadState* tstate, PyObject *value1, PyObject *value2);
-extern const instrinsic_func1 _PyIntrinsics_UnaryFunctions[];
-extern const instrinsic_func2 _PyIntrinsics_BinaryFunctions[];
-"""
-
-DEFINE = "#define {:<38} {:>3}\n"
-
-UINT32_MASK = (1<<32)-1
-
-def write_int_array_from_ops(name, ops, out):
-    bits = 0
-    for op in ops:
-        bits |= 1<<op
-    out.write(f"const uint32_t {name}[9] = {{\n")
-    for i in range(9):
-        out.write(f"    {bits & UINT32_MASK}U,\n")
-        bits >>= 32
-    assert bits == 0
-    out.write(f"}};\n")
-
-def main(opcode_py, outfile='Include/opcode.h',
-         internaloutfile='Include/internal/pycore_opcode.h',
-         intrinsicoutfile='Include/internal/pycore_intrinsics.h'):
-    opcode = {}
-    if hasattr(tokenize, 'open'):
-        fp = tokenize.open(opcode_py)   # Python 3.2+
-    else:
-        fp = open(opcode_py)            # Python 2.7
-    with fp:
-        code = fp.read()
-    exec(code, opcode)
-    opmap = opcode['opmap']
-    opname = opcode['opname']
-    hasarg = opcode['hasarg']
-    hasconst = opcode['hasconst']
-    hasjrel = opcode['hasjrel']
-    hasjabs = opcode['hasjabs']
-    is_pseudo = opcode['is_pseudo']
-    _pseudo_ops = opcode['_pseudo_ops']
-
-    ENABLE_SPECIALIZATION = opcode["ENABLE_SPECIALIZATION"]
-    HAVE_ARGUMENT = opcode["HAVE_ARGUMENT"]
-    MIN_PSEUDO_OPCODE = opcode["MIN_PSEUDO_OPCODE"]
-    MAX_PSEUDO_OPCODE = opcode["MAX_PSEUDO_OPCODE"]
-    MIN_INSTRUMENTED_OPCODE = opcode["MIN_INSTRUMENTED_OPCODE"]
-
-    NUM_OPCODES = len(opname)
-    used = [ False ] * len(opname)
-    next_op = 1
-
-    for name, op in opmap.items():
-        used[op] = True
-
-    specialized_opmap = {}
-    opname_including_specialized = opname.copy()
-    for name in opcode['_specialized_instructions']:
-        while used[next_op]:
-            next_op += 1
-        specialized_opmap[name] = next_op
-        opname_including_specialized[next_op] = name
-        used[next_op] = True
-
-    with open(outfile, 'w') as fobj, open(internaloutfile, 'w') as iobj, open(
-            intrinsicoutfile, "w") as nobj:
-        fobj.write(header)
-        iobj.write(internal_header)
-        nobj.write(intrinsic_header)
-
-        for name in opname:
-            if name in opmap:
-                op = opmap[name]
-                if op == HAVE_ARGUMENT:
-                    fobj.write(DEFINE.format("HAVE_ARGUMENT", HAVE_ARGUMENT))
-                if op == MIN_PSEUDO_OPCODE:
-                    fobj.write(DEFINE.format("MIN_PSEUDO_OPCODE", MIN_PSEUDO_OPCODE))
-                if op == MIN_INSTRUMENTED_OPCODE:
-                    fobj.write(DEFINE.format("MIN_INSTRUMENTED_OPCODE", MIN_INSTRUMENTED_OPCODE))
-
-                fobj.write(DEFINE.format(name, op))
-
-                if op == MAX_PSEUDO_OPCODE:
-                    fobj.write(DEFINE.format("MAX_PSEUDO_OPCODE", MAX_PSEUDO_OPCODE))
-
-
-        for name, op in specialized_opmap.items():
-            fobj.write(DEFINE.format(name, op))
-
-        iobj.write("\nextern const uint32_t _PyOpcode_Jump[9];\n")
-        iobj.write("\nextern const uint8_t _PyOpcode_Caches[256];\n")
-        iobj.write("\nextern const uint8_t _PyOpcode_Deopt[256];\n")
-        iobj.write("\n#ifdef NEED_OPCODE_TABLES\n")
-        write_int_array_from_ops("_PyOpcode_Jump", opcode['hasjrel'] + opcode['hasjabs'], iobj)
-
-        iobj.write("\nconst uint8_t _PyOpcode_Caches[256] = {\n")
-        for i, entries in enumerate(opcode["_inline_cache_entries"]):
-            if entries:
-                iobj.write(f"    [{opname[i]}] = {entries},\n")
-        iobj.write("};\n")
-
-        deoptcodes = {}
-        for basic, op in opmap.items():
-            if not is_pseudo(op):
-                deoptcodes[basic] = basic
-        for basic, family in opcode["_specializations"].items():
-            for specialized in family:
-                deoptcodes[specialized] = basic
-        iobj.write("\nconst uint8_t _PyOpcode_Deopt[256] = {\n")
-        for opt, deopt in sorted(deoptcodes.items()):
-            iobj.write(f"    [{opt}] = {deopt},\n")
-        iobj.write("};\n")
-        iobj.write("#endif   // NEED_OPCODE_TABLES\n")
-
-        fobj.write("\n")
-        fobj.write("#define HAS_ARG(op) ((((op) >= HAVE_ARGUMENT) && (!IS_PSEUDO_OPCODE(op)))\\")
-        for op in _pseudo_ops:
-            if opmap[op] in hasarg:
-                fobj.write(f"\n    || ((op) == {op}) \\")
-        fobj.write("\n    )\n")
-
-        fobj.write("\n")
-        fobj.write("#define HAS_CONST(op) (false\\")
-        for op in hasconst:
-            fobj.write(f"\n    || ((op) == {opname[op]}) \\")
-        fobj.write("\n    )\n")
-
-        fobj.write("\n")
-        for i, (op, _) in enumerate(opcode["_nb_ops"]):
-            fobj.write(DEFINE.format(op, i))
-
-        nobj.write("/* Unary Functions: */")
-        nobj.write("\n")
-        for i, op in enumerate(opcode["_intrinsic_1_descs"]):
-            nobj.write(DEFINE.format(op, i))
-        nobj.write("\n")
-        nobj.write(DEFINE.format("MAX_INTRINSIC_1", i))
-
-        nobj.write("\n\n")
-        nobj.write("/* Binary Functions: */\n")
-        for i, op in enumerate(opcode["_intrinsic_2_descs"]):
-            nobj.write(DEFINE.format(op, i))
-        nobj.write("\n")
-        nobj.write(DEFINE.format("MAX_INTRINSIC_2", i))
-
-        nobj.write(intrinsic_footer)
-
-        fobj.write("\n")
-        fobj.write("/* Defined in Lib/opcode.py */\n")
-        fobj.write(f"#define ENABLE_SPECIALIZATION {int(ENABLE_SPECIALIZATION)}")
-
-        iobj.write("\n")
-        iobj.write("#ifdef Py_DEBUG\n")
-        iobj.write(f"static const char *const _PyOpcode_OpName[{NUM_OPCODES}] = {{\n")
-        for op, name in enumerate(opname_including_specialized):
-            if name[0] != "<":
-                op = name
-            iobj.write(f'''    [{op}] = "{name}",\n''')
-        iobj.write("};\n")
-        iobj.write("#endif\n")
-
-        iobj.write("\n")
-        iobj.write("#define EXTRA_CASES \\\n")
-        for i, flag in enumerate(used):
-            if not flag:
-                iobj.write(f"    case {i}: \\\n")
-        iobj.write("        ;\n")
-
-        fobj.write(footer)
-        iobj.write(internal_footer)
-
-
-    print(f"{outfile} regenerated from {opcode_py}")
-
-
-if __name__ == '__main__':
-    main(sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4])
diff --git a/Tools/build/generate_sbom.py b/Tools/build/generate_sbom.py
new file mode 100644
index 00000000000000..0089db81af9b9d
--- /dev/null
+++ b/Tools/build/generate_sbom.py
@@ -0,0 +1,179 @@
+"""Tool for generating Software Bill of Materials (SBOM) for Python's dependencies"""
+
+import re
+import hashlib
+import json
+import glob
+import pathlib
+import subprocess
+import typing
+
+# Before adding a new entry to this list, double check that
+# the license expression is a valid SPDX license expression:
+# See: https://spdx.org/licenses
+ALLOWED_LICENSE_EXPRESSIONS = {
+    "MIT",
+    "CC0-1.0",
+    "Apache-2.0",
+    "BSD-2-Clause",
+}
+
+# Properties which are required for our purposes.
+REQUIRED_PROPERTIES_PACKAGE = frozenset([
+    "SPDXID",
+    "name",
+    "versionInfo",
+    "downloadLocation",
+    "checksums",
+    "licenseConcluded",
+    "externalRefs",
+    "originator",
+    "primaryPackagePurpose",
+])
+
+
+class PackageFiles(typing.NamedTuple):
+    """Structure for describing the files of a package"""
+    include: list[str]
+    exclude: list[str] | None = None
+
+
+# SBOMS don't have a method to specify the sources of files
+# so we need to do that external to the SBOM itself. Add new
+# values to 'exclude' if we create new files within tracked
+# directories that aren't sourced from third-party packages.
+PACKAGE_TO_FILES = {
+    "mpdecimal": PackageFiles(
+        include=["Modules/_decimal/libmpdec/**"]
+    ),
+    "expat": PackageFiles(
+        include=["Modules/expat/**"]
+    ),
+    "pip": PackageFiles(
+        include=["Lib/ensurepip/_bundled/pip-23.3.1-py3-none-any.whl"]
+    ),
+    "macholib": PackageFiles(
+        include=["Lib/ctypes/macholib/**"],
+        exclude=[
+            "Lib/ctypes/macholib/README.ctypes",
+            "Lib/ctypes/macholib/fetch_macholib",
+            "Lib/ctypes/macholib/fetch_macholib.bat",
+        ],
+    ),
+    "libb2": PackageFiles(
+        include=["Modules/_blake2/impl/**"]
+    ),
+    "hacl-star": PackageFiles(
+        include=["Modules/_hacl/**"],
+        exclude=[
+            "Modules/_hacl/refresh.sh",
+            "Modules/_hacl/README.md",
+            "Modules/_hacl/python_hacl_namespace.h",
+        ]
+    ),
+}
+
+
+def spdx_id(value: str) -> str:
+    """Encode a value into characters that are valid in an SPDX ID"""
+    return re.sub(r"[^a-zA-Z0-9.\-]+", "-", value)
+
+
+def filter_gitignored_paths(paths: list[str]) -> list[str]:
+    """
+    Filter out paths excluded by the gitignore file.
+    The output of 'git check-ignore --non-matching --verbose' looks
+    like this for non-matching (included) files:
+
+        '::<whitespace><path>'
+
+    And looks like this for matching (excluded) files:
+
+        '.gitignore:9:*.a    Tools/lib.a'
+    """
+    # Filter out files in gitignore.
+    # Non-matching files show up as '::<whitespace><path>'
+    git_check_ignore_proc = subprocess.run(
+        ["git", "check-ignore", "--verbose", "--non-matching", *paths],
+        check=False,
+        stdout=subprocess.PIPE,
+    )
+    # 1 means matches, 0 means no matches.
+    assert git_check_ignore_proc.returncode in (0, 1)
+
+    # Return the list of paths sorted
+    git_check_ignore_lines = git_check_ignore_proc.stdout.decode().splitlines()
+    return sorted([line.split()[-1] for line in git_check_ignore_lines if line.startswith("::")])
+
+
+def main() -> None:
+    root_dir = pathlib.Path(__file__).parent.parent.parent
+    sbom_path = root_dir / "Misc/sbom.spdx.json"
+    sbom_data = json.loads(sbom_path.read_bytes())
+
+    # Make a bunch of assertions about the SBOM data to ensure it's consistent.
+    assert {package["name"] for package in sbom_data["packages"]} == set(PACKAGE_TO_FILES)
+    for package in sbom_data["packages"]:
+
+        # Properties and ID must be properly formed.
+        assert set(package.keys()) == REQUIRED_PROPERTIES_PACKAGE
+        assert package["SPDXID"] == spdx_id(f"SPDXRef-PACKAGE-{package['name']}")
+
+        # Version must be in the download and external references.
+        version = package["versionInfo"]
+        assert version in package["downloadLocation"]
+        assert all(version in ref["referenceLocator"] for ref in package["externalRefs"])
+
+        # License must be on the approved list for SPDX.
+        assert package["licenseConcluded"] in ALLOWED_LICENSE_EXPRESSIONS, package["licenseConcluded"]
+
+    # Regenerate file information from current data.
+    sbom_files = []
+    sbom_relationships = []
+
+    # We call 'sorted()' here a lot to avoid filesystem scan order issues.
+    for name, files in sorted(PACKAGE_TO_FILES.items()):
+        package_spdx_id = spdx_id(f"SPDXRef-PACKAGE-{name}")
+        exclude = files.exclude or ()
+        for include in sorted(files.include):
+
+            # Find all the paths and then filter them through .gitignore.
+            paths = glob.glob(include, root_dir=root_dir, recursive=True)
+            paths = filter_gitignored_paths(paths)
+            assert paths, include  # Make sure that every value returns something!
+
+            for path in paths:
+                # Skip directories and excluded files
+                if not (root_dir / path).is_file() or path in exclude:
+                    continue
+
+                # SPDX requires SHA1 to be used for files, but we provide SHA256 too.
+                data = (root_dir / path).read_bytes()
+                checksum_sha1 = hashlib.sha1(data).hexdigest()
+                checksum_sha256 = hashlib.sha256(data).hexdigest()
+
+                file_spdx_id = spdx_id(f"SPDXRef-FILE-{path}")
+                sbom_files.append({
+                    "SPDXID": file_spdx_id,
+                    "fileName": path,
+                    "checksums": [
+                        {"algorithm": "SHA1", "checksumValue": checksum_sha1},
+                        {"algorithm": "SHA256", "checksumValue": checksum_sha256},
+                    ],
+                })
+
+                # Tie each file back to its respective package.
+                sbom_relationships.append({
+                    "spdxElementId": package_spdx_id,
+                    "relatedSpdxElement": file_spdx_id,
+                    "relationshipType": "CONTAINS",
+                })
+
+    # Update the SBOM on disk
+    sbom_data["files"] = sbom_files
+    sbom_data["relationships"] = sbom_relationships
+    sbom_path.write_text(json.dumps(sbom_data, indent=2, sort_keys=True))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/Tools/build/generate_stdlib_module_names.py b/Tools/build/generate_stdlib_module_names.py
index 7e0e9602a10765..766a85d3d6f39e 100644
--- a/Tools/build/generate_stdlib_module_names.py
+++ b/Tools/build/generate_stdlib_module_names.py
@@ -2,8 +2,6 @@
 # to update Python/stdlib_module_names.h
 import _imp
 import os.path
-import re
-import subprocess
 import sys
 import sysconfig
 
@@ -30,6 +28,7 @@
     '_testbuffer',
     '_testcapi',
     '_testclinic',
+    '_testclinic_limited',
     '_testconsole',
     '_testimportmultiple',
     '_testinternalcapi',
@@ -45,6 +44,16 @@
     'xxsubtype',
 }
 
+ALLOW_TEST_MODULES = {
+    'doctest',
+    'unittest',
+}
+
+# Built-in modules
+def list_builtin_modules(names):
+    names |= set(sys.builtin_module_names)
+
+
 # Pure Python modules (Lib/*.py)
 def list_python_modules(names):
     for filename in os.listdir(STDLIB_PATH):
@@ -95,7 +104,9 @@ def list_frozen(names):
 
 
 def list_modules():
-    names = set(sys.builtin_module_names)
+    names = set()
+
+    list_builtin_modules(names)
     list_modules_setup_extensions(names)
     list_packages(names)
     list_python_modules(names)
@@ -108,9 +119,12 @@ def list_modules():
         if package_name in IGNORE:
             names.discard(name)
 
+    # Sanity checks
     for name in names:
         if "." in name:
-            raise Exception("sub-modules must not be listed")
+            raise Exception(f"sub-modules must not be listed: {name}")
+        if ("test" in name or "xx" in name) and name not in ALLOW_TEST_MODULES:
+            raise Exception(f"test modules must not be listed: {name}")
 
     return names
 
diff --git a/Tools/build/generate_token.py b/Tools/build/generate_token.py
index 3bd307c1733867..16c38841e44a4d 100755
--- a/Tools/build/generate_token.py
+++ b/Tools/build/generate_token.py
@@ -50,7 +50,7 @@ def update_file(file, content):
 
 
 token_h_template = f"""\
-/* {AUTO_GENERATED_BY_SCRIPT} */
+// {AUTO_GENERATED_BY_SCRIPT}
 """
 token_h_template += """\
 
@@ -84,7 +84,7 @@ def update_file(file, content):
                                  (x) == FSTRING_MIDDLE)
 
 
-// Symbols exported for test_peg_generator
+// Export these 4 symbols for 'test_peg_generator'
 PyAPI_DATA(const char * const) _PyParser_TokenNames[]; /* Token names */
 PyAPI_FUNC(int) _PyToken_OneChar(int);
 PyAPI_FUNC(int) _PyToken_TwoChars(int, int);
diff --git a/Tools/build/mypy.ini b/Tools/build/mypy.ini
new file mode 100644
index 00000000000000..cf1dac7fde5ac5
--- /dev/null
+++ b/Tools/build/mypy.ini
@@ -0,0 +1,13 @@
+[mypy]
+files = Tools/build/generate_sbom.py
+pretty = True
+
+# Make sure Python can still be built
+# using Python 3.10 for `PYTHON_FOR_REGEN`...
+python_version = 3.10
+
+# ...And be strict:
+strict = True
+strict_concatenate = True
+enable_error_code = ignore-without-code,redundant-expr,truthy-bool,possibly-undefined
+warn_unreachable = True
diff --git a/Tools/build/regen-configure.sh b/Tools/build/regen-configure.sh
new file mode 100755
index 00000000000000..e34a36c1a573e5
--- /dev/null
+++ b/Tools/build/regen-configure.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -e -x
+
+# The check_generated_files job of .github/workflows/build.yml must kept in
+# sync with this script. Use the same container image than the job so the job
+# doesn't need to run autoreconf in a container.
+IMAGE="ubuntu:22.04"
+DEPENDENCIES="autotools-dev autoconf autoconf-archive pkg-config"
+AUTORECONF="autoreconf -ivf -Werror"
+
+WORK_DIR="/src"
+SHELL_CMD="apt-get update && apt-get -yq install $DEPENDENCIES && cd $WORK_DIR && $AUTORECONF"
+
+abs_srcdir=$(cd $(dirname $0)/../..; pwd)
+
+if podman --version &>/dev/null; then
+    RUNTIME="podman"
+elif docker --version &>/dev/null; then
+    RUNTIME="docker"
+else
+    echo "$@ needs either Podman or Docker container runtime." >&2
+    exit 1
+fi
+
+PATH_OPT=""
+if command -v selinuxenabled >/dev/null && selinuxenabled; then
+    PATH_OPT=":Z"
+fi
+
+"$RUNTIME" run --rm -v "$abs_srcdir:$WORK_DIR$PATH_OPT" "$IMAGE" /usr/bin/bash -c "$SHELL_CMD"
diff --git a/Tools/build/smelly.py b/Tools/build/smelly.py
index 276a5ab2cc84c6..7c534269c57a09 100755
--- a/Tools/build/smelly.py
+++ b/Tools/build/smelly.py
@@ -11,6 +11,16 @@
 if sys.platform == 'darwin':
     ALLOWED_PREFIXES += ('__Py',)
 
+# mimalloc doesn't use static, but it's symbols are not exported
+# from the shared library.  They do show up in the static library
+# before its linked into an executable.
+ALLOWED_STATIC_PREFIXES = ('mi_', '_mi_')
+
+# "Legacy": some old symbols are prefixed by "PY_".
+EXCEPTIONS = frozenset({
+    'PY_TIMEOUT_MAX',
+})
+
 IGNORED_EXTENSION = "_ctypes_test"
 # Ignore constructor and destructor functions
 IGNORED_SYMBOLS = {'_init', '_fini'}
@@ -54,7 +64,7 @@ def get_exported_symbols(library, dynamic=False):
     return stdout
 
 
-def get_smelly_symbols(stdout):
+def get_smelly_symbols(stdout, dynamic=False):
     smelly_symbols = []
     python_symbols = []
     local_symbols = []
@@ -72,7 +82,9 @@ def get_smelly_symbols(stdout):
         symbol = parts[-1]
         result = '%s (type: %s)' % (symbol, symtype)
 
-        if symbol.startswith(ALLOWED_PREFIXES):
+        if (symbol.startswith(ALLOWED_PREFIXES) or
+            symbol in EXCEPTIONS or
+            (not dynamic and symbol.startswith(ALLOWED_STATIC_PREFIXES))):
             python_symbols.append(result)
             continue
 
@@ -90,7 +102,7 @@ def get_smelly_symbols(stdout):
 
 def check_library(library, dynamic=False):
     nm_output = get_exported_symbols(library, dynamic)
-    smelly_symbols, python_symbols = get_smelly_symbols(nm_output)
+    smelly_symbols, python_symbols = get_smelly_symbols(nm_output, dynamic)
 
     if not smelly_symbols:
         print(f"OK: no smelly symbol found ({len(python_symbols)} Python symbols)")
diff --git a/Tools/build/stable_abi.py b/Tools/build/stable_abi.py
index 88db93e935e9be..85c437d521a15a 100644
--- a/Tools/build/stable_abi.py
+++ b/Tools/build/stable_abi.py
@@ -40,7 +40,6 @@
     "longintrepr.h",
     "parsetok.h",
     "pyatomic.h",
-    "pytime.h",
     "token.h",
     "ucnhash.h",
 }
@@ -183,7 +182,7 @@ def _decorator(func):
 def gen_python3dll(manifest, args, outfile):
     """Generate/check the source for the Windows stable ABI library"""
     write = partial(print, file=outfile)
-    content = f"""
+    content = f"""\
         /* Re-export stable Python ABI */
 
         /* Generated by {SCRIPT_NAME} */
@@ -267,8 +266,8 @@ def gen_doc_annotations(manifest, args, outfile):
 def gen_ctypes_test(manifest, args, outfile):
     """Generate/check the ctypes-based test for exported symbols"""
     write = partial(print, file=outfile)
-    write(textwrap.dedent('''
-        # Generated by Tools/scripts/stable_abi.py
+    write(textwrap.dedent(f'''\
+        # Generated by {SCRIPT_NAME}
 
         """Test that all symbols of the Stable ABI are accessible using ctypes
         """
@@ -341,7 +340,7 @@ def test_windows_feature_macros(self):
 def gen_testcapi_feature_macros(manifest, args, outfile):
     """Generate/check the stable ABI list for documentation annotations"""
     write = partial(print, file=outfile)
-    write('// Generated by Tools/scripts/stable_abi.py')
+    write(f'// Generated by {SCRIPT_NAME}')
     write()
     write('// Add an entry in dict `result` for each Stable ABI feature macro.')
     write()
@@ -522,7 +521,7 @@ def gcc_get_limited_api_macros(headers):
 
     api_hexversion = sys.version_info.major << 24 | sys.version_info.minor << 16
 
-    preprocesor_output_with_macros = subprocess.check_output(
+    preprocessor_output_with_macros = subprocess.check_output(
         sysconfig.get_config_var("CC").split()
         + [
             # Prevent the expansion of the exported macros so we can
@@ -541,7 +540,7 @@ def gcc_get_limited_api_macros(headers):
     return {
         target
         for target in re.findall(
-            r"#define (\w+)", preprocesor_output_with_macros
+            r"#define (\w+)", preprocessor_output_with_macros
         )
     }
 
@@ -562,7 +561,7 @@ def gcc_get_limited_api_definitions(headers):
     Requires Python built with a GCC-compatible compiler. (clang might work)
     """
     api_hexversion = sys.version_info.major << 24 | sys.version_info.minor << 16
-    preprocesor_output = subprocess.check_output(
+    preprocessor_output = subprocess.check_output(
         sysconfig.get_config_var("CC").split()
         + [
             # Prevent the expansion of the exported macros so we can capture
@@ -582,13 +581,13 @@ def gcc_get_limited_api_definitions(headers):
         stderr=subprocess.DEVNULL,
     )
     stable_functions = set(
-        re.findall(r"__PyAPI_FUNC\(.*?\)\s*(.*?)\s*\(", preprocesor_output)
+        re.findall(r"__PyAPI_FUNC\(.*?\)\s*(.*?)\s*\(", preprocessor_output)
     )
     stable_exported_data = set(
-        re.findall(r"__EXPORT_DATA\((.*?)\)", preprocesor_output)
+        re.findall(r"__EXPORT_DATA\((.*?)\)", preprocessor_output)
     )
     stable_data = set(
-        re.findall(r"__PyAPI_DATA\(.*?\)[\s\*\(]*([^);]*)\)?.*;", preprocesor_output)
+        re.findall(r"__PyAPI_DATA\(.*?\)[\s\*\(]*([^);]*)\)?.*;", preprocessor_output)
     )
     return stable_data | stable_exported_data | stable_functions
 
@@ -684,7 +683,8 @@ def main():
 
     if args.all:
         run_all_generators = True
-        args.unixy_check = True
+        if UNIXY:
+            args.unixy_check = True
 
     try:
         file = args.file.open('rb')
diff --git a/Tools/build/umarshal.py b/Tools/build/umarshal.py
index f61570cbaff751..8198a1780b8dad 100644
--- a/Tools/build/umarshal.py
+++ b/Tools/build/umarshal.py
@@ -1,4 +1,4 @@
-# Implementat marshal.loads() in pure Python
+# Implementation of marshal.loads() in pure Python
 
 import ast
 
@@ -125,10 +125,10 @@ def r_long64(self) -> int:
         x |= buf[1] << 8
         x |= buf[2] << 16
         x |= buf[3] << 24
-        x |= buf[1] << 32
-        x |= buf[1] << 40
-        x |= buf[1] << 48
-        x |= buf[1] << 56
+        x |= buf[4] << 32
+        x |= buf[5] << 40
+        x |= buf[6] << 48
+        x |= buf[7] << 56
         x |= -(x & (1<<63))  # Sign-extend
         return x
 
diff --git a/Tools/build/verify_ensurepip_wheels.py b/Tools/build/verify_ensurepip_wheels.py
index 09fd5d9e3103ac..29897425da6c03 100755
--- a/Tools/build/verify_ensurepip_wheels.py
+++ b/Tools/build/verify_ensurepip_wheels.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python3
+#!/usr/bin/env python3
 
 """
 Compare checksums for wheels in :mod:`ensurepip` against the Cheeseshop.
@@ -35,11 +35,17 @@ def print_error(file_path: str, message: str) -> None:
 
 def verify_wheel(package_name: str) -> bool:
     # Find the package on disk
-    package_path = next(WHEEL_DIR.glob(f"{package_name}*.whl"), None)
-    if not package_path:
-        print_error("", f"Could not find a {package_name} wheel on disk.")
+    package_paths = list(WHEEL_DIR.glob(f"{package_name}*.whl"))
+    if len(package_paths) != 1:
+        if package_paths:
+            for p in package_paths:
+                print_error(p, f"Found more than one wheel for package {package_name}.")
+        else:
+            print_error("", f"Could not find a {package_name} wheel on disk.")
         return False
 
+    package_path = package_paths[0]
+
     print(f"Verifying checksum for {package_path}.")
 
     # Find the version of the package used by ensurepip
diff --git a/Tools/buildbot/test.bat b/Tools/buildbot/test.bat
index 25c796a60e173d..781f9a4c8206c8 100644
--- a/Tools/buildbot/test.bat
+++ b/Tools/buildbot/test.bat
@@ -5,7 +5,7 @@ setlocal
 set PATH=%PATH%;%SystemRoot%\SysNative\OpenSSH;%SystemRoot%\System32\OpenSSH
 set here=%~dp0
 set rt_opts=-q -d
-set regrtest_args=-j1
+set regrtest_args=
 set arm32_ssh=
 
 :CheckOpts
@@ -23,7 +23,7 @@ if "%PROCESSOR_ARCHITECTURE%"=="ARM" if "%arm32_ssh%"=="true" goto NativeExecuti
 if "%arm32_ssh%"=="true" goto :Arm32Ssh
 
 :NativeExecution
-call "%here%..\..\PCbuild\rt.bat" %rt_opts% -uall -rwW --slowest --timeout=1200 --fail-env-changed %regrtest_args%
+call "%here%..\..\PCbuild\rt.bat" %rt_opts% --slow-ci %regrtest_args%
 exit /b %ERRORLEVEL%
 
 :Arm32Ssh
@@ -35,7 +35,7 @@ if NOT "%REMOTE_PYTHON_DIR:~-1,1%"=="\" (set REMOTE_PYTHON_DIR=%REMOTE_PYTHON_DI
 
 set TEMP_ARGS=--temp %REMOTE_PYTHON_DIR%temp
 
-set rt_args=%rt_opts% %dashU% -rwW --slowest --timeout=1200 --fail-env-changed %regrtest_args% %TEMP_ARGS%
+set rt_args=%rt_opts% --slow-ci %dashU% %regrtest_args% %TEMP_ARGS%
 ssh %SSH_SERVER% "set TEMP=%REMOTE_PYTHON_DIR%temp& cd %REMOTE_PYTHON_DIR% & %REMOTE_PYTHON_DIR%PCbuild\rt.bat" %rt_args%
 set ERR=%ERRORLEVEL%
 scp %SSH_SERVER%:"%REMOTE_PYTHON_DIR%test-results.xml" "%PYTHON_SOURCE%\test-results.xml"
diff --git a/Tools/c-analyzer/TODO b/Tools/c-analyzer/TODO
index 27a535814ea52b..3d599538510bd9 100644
--- a/Tools/c-analyzer/TODO
+++ b/Tools/c-analyzer/TODO
@@ -428,8 +428,8 @@ Objects/typeobject.c:type_new():PyId___slots__                   _Py_IDENTIFIER(
 Objects/unicodeobject.c:unicodeiter_reduce():PyId_iter           _Py_IDENTIFIER(iter)
 Objects/weakrefobject.c:proxy_bytes():PyId___bytes__             _Py_IDENTIFIER(__bytes__)
 Objects/weakrefobject.c:weakref_repr():PyId___name__             _Py_IDENTIFIER(__name__)
-Parser/tokenizer.c:fp_setreadl():PyId_open                       _Py_IDENTIFIER(open)
-Parser/tokenizer.c:fp_setreadl():PyId_readline                   _Py_IDENTIFIER(readline)
+Parser/tokenizer/file_tokenizer.c:fp_setreadl():PyId_open        _Py_IDENTIFIER(open)
+Parser/tokenizer/file_tokenizer.c:fp_setreadl():PyId_readline    _Py_IDENTIFIER(readline)
 Python/Python-ast.c:ast_type_reduce():PyId___dict__              _Py_IDENTIFIER(__dict__)
 Python/Python-ast.c:make_type():PyId___module__                  _Py_IDENTIFIER(__module__)
 Python/_warnings.c:PyId_stderr                                   _Py_IDENTIFIER(stderr)
diff --git a/Tools/c-analyzer/c_analyzer/__init__.py b/Tools/c-analyzer/c_analyzer/__init__.py
index 171fa25102bffc..b83ffc087a08d8 100644
--- a/Tools/c-analyzer/c_analyzer/__init__.py
+++ b/Tools/c-analyzer/c_analyzer/__init__.py
@@ -18,7 +18,7 @@
 
 
 def analyze(filenmes, **kwargs):
-    results = iter_analyis_results(filenames, **kwargs)
+    results = iter_analysis_results(filenames, **kwargs)
     return Analysis.from_results(results)
 
 
diff --git a/Tools/c-analyzer/c_common/scriptutil.py b/Tools/c-analyzer/c_common/scriptutil.py
index ce69af2b6bdee5..ab9d74a9cbf145 100644
--- a/Tools/c-analyzer/c_common/scriptutil.py
+++ b/Tools/c-analyzer/c_common/scriptutil.py
@@ -1,6 +1,5 @@
 import argparse
 import contextlib
-import fnmatch
 import logging
 import os
 import os.path
diff --git a/Tools/c-analyzer/c_parser/info.py b/Tools/c-analyzer/c_parser/info.py
index 799f9237877447..f96172e8ca8dfb 100644
--- a/Tools/c-analyzer/c_parser/info.py
+++ b/Tools/c-analyzer/c_parser/info.py
@@ -206,7 +206,7 @@ def from_row(cls, row, **markers):
         row = _tables.fix_row(row, **markers)
         return cls(*row)
 
-    # We have to provde _make() becaose we implemented __new__().
+    # We have to provide _make() because we implemented __new__().
 
     @classmethod
     def _make(cls, iterable):
diff --git a/Tools/c-analyzer/c_parser/parser/_info.py b/Tools/c-analyzer/c_parser/parser/_info.py
index cc21931b66cc57..340223db933c90 100644
--- a/Tools/c-analyzer/c_parser/parser/_info.py
+++ b/Tools/c-analyzer/c_parser/parser/_info.py
@@ -1,4 +1,4 @@
-import re
+#import re
 
 from ..info import KIND, ParsedItem, FileInfo
 
diff --git a/Tools/c-analyzer/c_parser/parser/_regexes.py b/Tools/c-analyzer/c_parser/parser/_regexes.py
index b7f22b186f4965..5695daff67d6bd 100644
--- a/Tools/c-analyzer/c_parser/parser/_regexes.py
+++ b/Tools/c-analyzer/c_parser/parser/_regexes.py
@@ -58,6 +58,7 @@ def _ind(text, level=1, edges='both'):
             extern |
             register |
             static |
+            _Thread_local |
             typedef |
 
             const |
@@ -137,7 +138,7 @@ def _ind(text, level=1, edges='both'):
 #######################################
 # variable declarations
 
-_STORAGE = 'auto register static extern'.split()
+_STORAGE = 'auto register static extern _Thread_local'.split()
 STORAGE_CLASS = rf'(?: \b (?: {" | ".join(_STORAGE)} ) \b )'
 TYPE_QUALIFIER = r'(?: \b (?: const | volatile ) \b )'
 PTR_QUALIFIER = rf'(?: [*] (?: \s* {TYPE_QUALIFIER} )? )'
diff --git a/Tools/c-analyzer/c_parser/preprocessor/__init__.py b/Tools/c-analyzer/c_parser/preprocessor/__init__.py
index cdc1a4e1269059..30a86cbd7dc494 100644
--- a/Tools/c-analyzer/c_parser/preprocessor/__init__.py
+++ b/Tools/c-analyzer/c_parser/preprocessor/__init__.py
@@ -2,6 +2,7 @@
 import logging
 import os
 import os.path
+import platform
 import re
 import sys
 
@@ -242,6 +243,8 @@ def _get_default_compiler():
         return 'unix'
     if os.name == 'nt':
         return 'msvc'
+    if sys.platform == 'darwin' and 'clang' in platform.python_compiler():
+        return 'clang'
     return 'unix'
 
 
diff --git a/Tools/c-analyzer/c_parser/preprocessor/__main__.py b/Tools/c-analyzer/c_parser/preprocessor/__main__.py
index 55aa8752dce724..1ef55f55c38c5b 100644
--- a/Tools/c-analyzer/c_parser/preprocessor/__main__.py
+++ b/Tools/c-analyzer/c_parser/preprocessor/__main__.py
@@ -2,7 +2,6 @@
 import sys
 
 from c_common.scriptutil import (
-    CLIArgSpec as Arg,
     add_verbosity_cli,
     add_traceback_cli,
     add_kind_filtering_cli,
diff --git a/Tools/c-analyzer/c_parser/preprocessor/common.py b/Tools/c-analyzer/c_parser/preprocessor/common.py
index dbe1edeef38527..06f8f4da62b224 100644
--- a/Tools/c-analyzer/c_parser/preprocessor/common.py
+++ b/Tools/c-analyzer/c_parser/preprocessor/common.py
@@ -1,6 +1,7 @@
 import contextlib
 import distutils.ccompiler
 import logging
+import os
 import shlex
 import subprocess
 import sys
@@ -40,7 +41,12 @@ def run_cmd(argv, *,
     kw.pop('kwargs')
     kwargs.update(kw)
 
-    proc = subprocess.run(argv, **kwargs)
+    # Remove LANG environment variable: the C parser doesn't support GCC
+    # localized messages
+    env = dict(os.environ)
+    env.pop('LANG', None)
+
+    proc = subprocess.run(argv, env=env, **kwargs)
     return proc.stdout
 
 
diff --git a/Tools/c-analyzer/c_parser/preprocessor/gcc.py b/Tools/c-analyzer/c_parser/preprocessor/gcc.py
index c680f351f22416..6ece70c77fd55c 100644
--- a/Tools/c-analyzer/c_parser/preprocessor/gcc.py
+++ b/Tools/c-analyzer/c_parser/preprocessor/gcc.py
@@ -3,6 +3,21 @@
 
 from . import common as _common
 
+# The following C files must not built with Py_BUILD_CORE.
+FILES_WITHOUT_INTERNAL_CAPI = frozenset((
+    # Modules/
+    '_testcapimodule.c',
+    '_testclinic_limited.c',
+    'xxlimited.c',
+    'xxlimited_35.c',
+))
+
+# C files in the fhe following directories must not be built with
+# Py_BUILD_CORE.
+DIRS_WITHOUT_INTERNAL_CAPI = frozenset((
+    # Modules/_testcapi/
+    '_testcapi',
+))
 
 TOOL = 'gcc'
 
@@ -60,6 +75,14 @@ def preprocess(filename,
     if not cwd or not os.path.isabs(cwd):
         cwd = os.path.abspath(cwd or '.')
     filename = _normpath(filename, cwd)
+
+    postargs = POST_ARGS
+    basename = os.path.basename(filename)
+    dirname = os.path.basename(os.path.dirname(filename))
+    if (basename not in FILES_WITHOUT_INTERNAL_CAPI
+       and dirname not in DIRS_WITHOUT_INTERNAL_CAPI):
+        postargs += ('-DPy_BUILD_CORE=1',)
+
     text = _common.preprocess(
         TOOL,
         filename,
@@ -67,7 +90,7 @@ def preprocess(filename,
         includes=includes,
         macros=macros,
         #preargs=PRE_ARGS,
-        postargs=POST_ARGS,
+        postargs=postargs,
         executable=['gcc'],
         compiler='unix',
         cwd=cwd,
@@ -219,6 +242,7 @@ def _strip_directives(line, partial=0):
         line = line[m.end():]
 
     line = re.sub(r'__extension__', '', line)
+    line = re.sub(r'__thread\b', '_Thread_local', line)
 
     while (m := COMPILER_DIRECTIVE_RE.match(line)):
         before, _, _, closed = m.groups()
diff --git a/Tools/c-analyzer/cpython/_analyzer.py b/Tools/c-analyzer/cpython/_analyzer.py
index 68d6b31cf2b6f0..f07fa8af495e17 100644
--- a/Tools/c-analyzer/cpython/_analyzer.py
+++ b/Tools/c-analyzer/cpython/_analyzer.py
@@ -1,5 +1,4 @@
 import os.path
-import re
 
 from c_common.clsutil import classonly
 from c_parser.info import (
diff --git a/Tools/c-analyzer/cpython/_files.py b/Tools/c-analyzer/cpython/_files.py
index ee9e46f7e5e95f..a9bf0a1961222a 100644
--- a/Tools/c-analyzer/cpython/_files.py
+++ b/Tools/c-analyzer/cpython/_files.py
@@ -9,6 +9,7 @@
     # Technically, this is covered by "Include/*.h":
     #'Include/cpython/*.h',
     'Include/internal/*.h',
+    'Include/internal/mimalloc/**/*.h',
     'Modules/**/*.h',
     'Modules/**/*.c',
     'Objects/**/*.h',
diff --git a/Tools/c-analyzer/cpython/_parser.py b/Tools/c-analyzer/cpython/_parser.py
index 9bd54db0f59c51..04388fb54caa6c 100644
--- a/Tools/c-analyzer/cpython/_parser.py
+++ b/Tools/c-analyzer/cpython/_parser.py
@@ -71,6 +71,7 @@ def clean_lines(text):
 
 # only huge constants (safe but parsing is slow)
 Modules/_ssl_data.h
+Modules/_ssl_data_31.h
 Modules/_ssl_data_300.h
 Modules/_ssl_data_111.h
 Modules/cjkcodecs/mappings_*.h
@@ -82,10 +83,17 @@ def clean_lines(text):
 Python/deepfreeze/*.c
 Python/frozen_modules/*.h
 Python/generated_cases.c.h
+Python/executor_cases.c.h
+Python/abstract_interp_cases.c.h
 
 # not actually source
 Python/bytecodes.c
 
+# mimalloc
+Objects/mimalloc/*.c
+Include/internal/mimalloc/*.h
+Include/internal/mimalloc/mimalloc/*.h
+
 # @end=conf@
 ''')
 
@@ -106,6 +114,7 @@ def clean_lines(text):
 *	.
 *	./Include
 *	./Include/internal
+*   ./Include/internal/mimalloc
 
 Modules/_decimal/**/*.c	Modules/_decimal/libmpdec
 Modules/_elementtree.c	Modules/expat
@@ -120,7 +129,6 @@ def clean_lines(text):
 # possible system-installed headers, just in case
 Modules/_tkinter.c	/usr/include/tcl8.6
 Modules/_uuidmodule.c	/usr/include/uuid
-Modules/nismodule.c	/usr/include/tirpc
 Modules/tkappinit.c	/usr/include/tcl
 
 # @end=tsv@
@@ -226,6 +234,7 @@ def clean_lines(text):
 Include/cpython/fileutils.h	Py_CPYTHON_FILEUTILS_H	1
 Include/cpython/frameobject.h	Py_CPYTHON_FRAMEOBJECT_H	1
 Include/cpython/import.h	Py_CPYTHON_IMPORT_H	1
+Include/cpython/interpreteridobject.h	Py_CPYTHON_INTERPRETERIDOBJECT_H	1
 Include/cpython/listobject.h	Py_CPYTHON_LISTOBJECT_H	1
 Include/cpython/methodobject.h	Py_CPYTHON_METHODOBJECT_H	1
 Include/cpython/object.h	Py_CPYTHON_OBJECT_H	1
@@ -311,6 +320,7 @@ def clean_lines(text):
     _abs('Objects/stringlib/unicode_format.h'): (10_000, 400),
     _abs('Objects/typeobject.c'): (35_000, 200),
     _abs('Python/compile.c'): (20_000, 500),
+    _abs('Python/parking_lot.c'): (40_000, 1000),
     _abs('Python/pylifecycle.c'): (500_000, 5000),
     _abs('Python/pystate.c'): (500_000, 5000),
 
diff --git a/Tools/c-analyzer/cpython/globals-to-fix.tsv b/Tools/c-analyzer/cpython/globals-to-fix.tsv
index 9863acdade308b..aa8ce49ae86376 100644
--- a/Tools/c-analyzer/cpython/globals-to-fix.tsv
+++ b/Tools/c-analyzer/cpython/globals-to-fix.tsv
@@ -54,9 +54,10 @@ Objects/genobject.c	-	_PyAsyncGenASend_Type	-
 Objects/genobject.c	-	_PyAsyncGenAThrow_Type	-
 Objects/genobject.c	-	_PyAsyncGenWrappedValue_Type	-
 Objects/genobject.c	-	_PyCoroWrapper_Type	-
-Objects/interpreteridobject.c	-	_PyInterpreterID_Type	-
+Objects/interpreteridobject.c	-	PyInterpreterID_Type	-
 Objects/iterobject.c	-	PyCallIter_Type	-
 Objects/iterobject.c	-	PySeqIter_Type	-
+Objects/iterobject.c	-	_PyAnextAwaitable_Type	-
 Objects/listobject.c	-	PyListIter_Type	-
 Objects/listobject.c	-	PyListRevIter_Type	-
 Objects/listobject.c	-	PyList_Type	-
@@ -70,6 +71,7 @@ Objects/moduleobject.c	-	PyModule_Type	-
 Objects/namespaceobject.c	-	_PyNamespace_Type	-
 Objects/object.c	-	_PyNone_Type	-
 Objects/object.c	-	_PyNotImplemented_Type	-
+Objects/object.c 	-	_PyAnextAwaitable_Type	-
 Objects/odictobject.c	-	PyODictItems_Type	-
 Objects/odictobject.c	-	PyODictIter_Type	-
 Objects/odictobject.c	-	PyODictKeys_Type	-
@@ -90,6 +92,7 @@ Objects/typeobject.c	-	_PyBufferWrapper_Type	-
 Objects/typeobject.c	-	PyBaseObject_Type	-
 Objects/typeobject.c	-	PySuper_Type	-
 Objects/typeobject.c	-	PyType_Type	-
+Objects/typevarobject.c	-	_PyTypeAlias_Type	-
 Objects/unicodeobject.c	-	PyUnicodeIter_Type	-
 Objects/unicodeobject.c	-	PyUnicode_Type	-
 Objects/weakrefobject.c	-	_PyWeakref_CallableProxyType	-
@@ -112,8 +115,6 @@ Objects/codeobject.c	-	_PyLineIterator	-
 Objects/codeobject.c	-	_PyPositionsIterator	-
 Objects/genericaliasobject.c	-	_Py_GenericAliasIterType	-
 # Not in a .h file:
-Objects/iterobject.c	-	_PyAnextAwaitable_Type	-
-# Not in a .h file:
 Objects/memoryobject.c	-	_PyMemoryIter_Type	-
 Objects/unicodeobject.c	-	_PyUnicodeASCIIIter_Type	-
 Objects/unionobject.c	-	_PyUnion_Type	-
@@ -321,6 +322,12 @@ Modules/_testcapi/vectorcall.c	-	MethodDescriptorBase_Type	-
 Modules/_testcapi/vectorcall.c	-	MethodDescriptorDerived_Type	-
 Modules/_testcapi/vectorcall.c	-	MethodDescriptorNopGet_Type	-
 Modules/_testcapi/vectorcall.c	-	MethodDescriptor2_Type	-
+Modules/_testclinic.c	-	DeprStarInit	-
+Modules/_testclinic.c	-	DeprStarInitNoInline	-
+Modules/_testclinic.c	-	DeprStarNew	-
+Modules/_testclinic.c	-	DeprKwdInit	-
+Modules/_testclinic.c	-	DeprKwdInitNoInline	-
+Modules/_testclinic.c	-	DeprKwdNew	-
 
 
 ##################################
@@ -374,12 +381,6 @@ Modules/_datetimemodule.c	-	PyDateTime_IsoCalendarDateType	-
 Modules/_datetimemodule.c	-	PyDateTime_TZInfoType	-
 Modules/_datetimemodule.c	-	PyDateTime_TimeType	-
 Modules/_datetimemodule.c	-	PyDateTime_TimeZoneType	-
-Modules/_decimal/_decimal.c	-	PyDecContextManager_Type	-
-Modules/_decimal/_decimal.c	-	PyDecContext_Type	-
-Modules/_decimal/_decimal.c	-	PyDecSignalDictMixin_Type	-
-Modules/_decimal/_decimal.c	-	PyDec_Type	-
-Modules/ossaudiodev.c	-	OSSAudioType	-
-Modules/ossaudiodev.c	-	OSSMixerType	-
 Modules/xxmodule.c	-	Null_Type	-
 Modules/xxmodule.c	-	Str_Type	-
 Modules/xxmodule.c	-	Xxo_Type	-
@@ -390,8 +391,6 @@ Modules/xxsubtype.c	-	spamlist_type	-
 ## non-static types - initialized once
 
 ## heap types
-Modules/_decimal/_decimal.c	-	DecimalTuple	-
-Modules/_decimal/_decimal.c	-	PyDecSignalDict_Type	-
 Modules/_tkinter.c	-	PyTclObject_Type	-
 Modules/_tkinter.c	-	Tkapp_Type	-
 Modules/_tkinter.c	-	Tktt_Type	-
@@ -400,9 +399,7 @@ Modules/xxlimited_35.c	-	Xxo_Type	-
 ## exception types
 Modules/_ctypes/_ctypes.c	-	PyExc_ArgError	-
 Modules/_cursesmodule.c	-	PyCursesError	-
-Modules/_decimal/_decimal.c	-	DecimalException	-
 Modules/_tkinter.c	-	Tkinter_TclError	-
-Modules/ossaudiodev.c	-	OSSAudioError	-
 Modules/xxlimited_35.c	-	ErrorObject	-
 Modules/xxmodule.c	-	ErrorObject	-
 
@@ -421,29 +418,12 @@ Modules/_ctypes/_ctypes.c	-	_unpickle	-
 Modules/_ctypes/_ctypes.c	PyCArrayType_from_ctype	cache	-
 Modules/_cursesmodule.c	-	ModDict	-
 Modules/_datetimemodule.c	datetime_strptime	module	-
-Modules/_datetimemodule.c	-	PyDateTime_TimeZone_UTC	-
-Modules/_datetimemodule.c	-	PyDateTime_Epoch	-
-Modules/_datetimemodule.c	-	us_per_ms	-
-Modules/_datetimemodule.c	-	us_per_second	-
-Modules/_datetimemodule.c	-	us_per_minute	-
-Modules/_datetimemodule.c	-	us_per_hour	-
-Modules/_datetimemodule.c	-	us_per_day	-
-Modules/_datetimemodule.c	-	us_per_week	-
-Modules/_datetimemodule.c	-	seconds_per_day	-
-Modules/_decimal/_decimal.c	-	basic_context_template	-
-Modules/_decimal/_decimal.c	-	current_context_var	-
-Modules/_decimal/_decimal.c	-	default_context_template	-
-Modules/_decimal/_decimal.c	-	extended_context_template	-
-Modules/_decimal/_decimal.c	-	round_map	-
-Modules/_decimal/_decimal.c	-	Rational	-
-Modules/_decimal/_decimal.c	-	SignalTuple	-
 
 ## state
-Modules/_asynciomodule.c	-	fi_freelist	-
-Modules/_asynciomodule.c	-	fi_freelist_len	-
 Modules/_ctypes/_ctypes.c	-	_ctypes_ptrtype_cache	-
 Modules/_ctypes/_ctypes.c	-	global_state	-
 Modules/_ctypes/ctypes.h	-	global_state	-
+Modules/_datetimemodule.c	-	_datetime_global_state	-
 Modules/_tkinter.c	-	tcl_lock	-
 Modules/_tkinter.c	-	excInCmd	-
 Modules/_tkinter.c	-	valInCmd	-
@@ -456,10 +436,6 @@ Modules/_tkinter.c	-	trbInCmd	-
 ##-----------------------
 ## initialized once
 
-## pre-allocated buffer
-Modules/nismodule.c	nisproc_maplist_2	res	-
-Modules/pyexpat.c	PyUnknownEncodingHandler	template_buffer	-
-
 ## other
 Include/datetime.h	-	PyDateTimeAPI	-
 Modules/_ctypes/cfield.c	_ctypes_get_fielddesc	initialized	-
@@ -468,12 +444,6 @@ Modules/_cursesmodule.c	-	initialised	-
 Modules/_cursesmodule.c	-	initialised_setupterm	-
 Modules/_cursesmodule.c	-	initialisedcolors	-
 Modules/_cursesmodule.c	-	screen_encoding	-
-Modules/_decimal/_decimal.c	-	_py_long_multiply	-
-Modules/_decimal/_decimal.c	-	_py_long_floor_divide	-
-Modules/_decimal/_decimal.c	-	_py_long_power	-
-Modules/_decimal/_decimal.c	-	_py_float_abs	-
-Modules/_decimal/_decimal.c	-	_py_long_bit_length	-
-Modules/_decimal/_decimal.c	-	_py_float_as_integer_ratio	-
 Modules/_elementtree.c	-	expat_capi	-
 Modules/readline.c	-	libedit_append_replace_history_offset	-
 Modules/readline.c	-	using_libedit_emulation	-
diff --git a/Tools/c-analyzer/cpython/ignored.tsv b/Tools/c-analyzer/cpython/ignored.tsv
index 7ba116dcb171cf..d59e0ddcdfde4e 100644
--- a/Tools/c-analyzer/cpython/ignored.tsv
+++ b/Tools/c-analyzer/cpython/ignored.tsv
@@ -50,6 +50,9 @@ Python/getversion.c	-	version	-
 Python/bootstrap_hash.c	-	_Py_HashSecret_Initialized	-
 Python/pyhash.c	-	_Py_HashSecret	-
 
+## thread-safe hashtable (internal locks)
+Python/parking_lot.c	-	buckets	-
+
 
 ##################################
 ## state tied to Py_Main()
@@ -85,6 +88,10 @@ Parser/myreadline.c	-	PyOS_ReadlineFunctionPointer	-
 Python/initconfig.c	-	_Py_StandardStreamEncoding	-
 Python/initconfig.c	-	_Py_StandardStreamErrors	-
 
+# Internal constant list
+Python/initconfig.c	-	PYCONFIG_SPEC	-
+
+
 ##-----------------------
 ## public C-API
 
@@ -159,6 +166,9 @@ Python/pylifecycle.c	fatal_error	reentrant	-
 # explicitly protected, internal-only
 Modules/_xxinterpchannelsmodule.c	-	_globals	-
 
+# set once during module init
+Modules/_decimal/_decimal.c	-	minalloc_is_set	-
+
 
 ##################################
 ## not significant
@@ -168,6 +178,12 @@ Modules/_xxinterpchannelsmodule.c	-	_globals	-
 
 Python/pyfpe.c	-	PyFPE_counter	-
 
+##-----------------------
+## thread-local variables
+
+Python/import.c	-	pkgcontext	-
+Python/pystate.c	-	_Py_tss_tstate	-
+
 ##-----------------------
 ## should be const
 # XXX Make them const.
@@ -199,14 +215,15 @@ Modules/_datetimemodule.c	-	max_fold_seconds	-
 Modules/_datetimemodule.c	datetime_isoformat	specs	-
 Modules/_datetimemodule.c	parse_hh_mm_ss_ff	correction	-
 Modules/_datetimemodule.c	time_isoformat	specs	-
-Modules/_decimal/_decimal.c	-	cond_map	-
+Modules/_decimal/_decimal.c	-	cond_map_template	-
 Modules/_decimal/_decimal.c	-	dec_signal_string	-
 Modules/_decimal/_decimal.c	-	dflt_ctx	-
 Modules/_decimal/_decimal.c	-	int_constants	-
 Modules/_decimal/_decimal.c	-	invalid_rounding_err	-
 Modules/_decimal/_decimal.c	-	invalid_signals_err	-
-Modules/_decimal/_decimal.c	-	signal_map	-
+Modules/_decimal/_decimal.c	-	signal_map_template	-
 Modules/_decimal/_decimal.c	-	ssize_constants	-
+Modules/_decimal/_decimal.c	-	INVALID_SIGNALDICT_ERROR_MSG	-
 Modules/_elementtree.c	-	ExpatMemoryHandler	-
 Modules/_hashopenssl.c	-	py_hashes	-
 Modules/_hacl/Hacl_Hash_SHA1.c	-	_h0	-
@@ -282,10 +299,6 @@ Modules/cmathmodule.c	-	tanh_special_values	-
 Modules/config.c	-	_PyImport_Inittab	-
 Modules/faulthandler.c	-	faulthandler_handlers	-
 Modules/getnameinfo.c	-	gni_afdl	-
-Modules/nismodule.c	-	TIMEOUT	-
-Modules/nismodule.c	-	aliases	-
-Modules/ossaudiodev.c	-	control_labels	-
-Modules/ossaudiodev.c	-	control_names	-
 Modules/posixmodule.c	os_getxattr_impl	buffer_sizes	-
 Modules/posixmodule.c	os_listxattr_impl	buffer_sizes	-
 Modules/posixmodule.c	-	posix_constants_confstr	-
@@ -322,9 +335,10 @@ Objects/unicodeobject.c	unicode_encode_call_errorhandler	argparse	-
 Objects/unicodeobject.c	unicode_translate_call_errorhandler	argparse	-
 Parser/parser.c	-	reserved_keywords	-
 Parser/parser.c	-	soft_keywords	-
-Parser/tokenizer.c	-	type_comment_prefix	-
+Parser/lexer/lexer.c	-	type_comment_prefix	-
 Python/ast_opt.c	fold_unaryop	ops	-
-Python/ceval.c	-	binary_ops	-
+Python/ceval.c	-	_PyEval_BinaryOps	-
+Python/ceval.c	-	_Py_INTERPRETER_TRAMPOLINE_INSTRUCTIONS	-
 Python/codecs.c	-	Py_hexdigits	-
 Python/codecs.c	-	ucnhash_capi	-
 Python/codecs.c	_PyCodecRegistry_Init	methods	-
@@ -356,9 +370,16 @@ Python/pystate.c	-	initial	-
 Python/specialize.c	-	adaptive_opcodes	-
 Python/specialize.c	-	cache_requirements	-
 Python/stdlib_module_names.h	-	_Py_stdlib_module_names	-
+Python/sysmodule.c	-	perf_map_state	-
 Python/sysmodule.c	-	_PySys_ImplCacheTag	-
 Python/sysmodule.c	-	_PySys_ImplName	-
 Python/sysmodule.c	-	whatstrings	-
+Python/optimizer.c	-	_PyDefaultOptimizer_Type	-
+Python/optimizer.c	-	_PyCounterExecutor_Type	-
+Python/optimizer.c	-	_PyCounterOptimizer_Type	-
+Python/optimizer.c	-	_PyUOpExecutor_Type	-
+Python/optimizer.c	-	_PyUOpOptimizer_Type	-
+Python/optimizer.c	-	_PyOptimizer_Default	-
 
 ##-----------------------
 ## test code
@@ -408,6 +429,8 @@ Modules/_testbuffer.c	staticarray_init	kwlist	-
 Modules/_testcapi/buffer.c	-	testBufType	-
 Modules/_testcapi/code.c	get_code_extra_index	key	-
 Modules/_testcapi/datetime.c	-	test_run_counter	-
+Modules/_testcapi/docstring.c	-	DocStringNoSignatureTest	-
+Modules/_testcapi/docstring.c	-	DocStringUnrepresentableSignatureTest	-
 Modules/_testcapi/exceptions.c	-	PyRecursingInfinitelyError_Type	-
 Modules/_testcapi/heaptype.c	-	_testcapimodule	-
 Modules/_testcapi/mem.c	-	FmData	-
@@ -418,11 +441,14 @@ Modules/_testcapi/watchers.c	-	g_dict_watch_events	-
 Modules/_testcapi/watchers.c	-	g_dict_watchers_installed	-
 Modules/_testcapi/watchers.c	-	g_type_modified_events	-
 Modules/_testcapi/watchers.c	-	g_type_watchers_installed	-
+Modules/_testcapi/watchers.c	-	code_watcher_ids	-
 Modules/_testcapi/watchers.c	-	num_code_object_created_events	-
 Modules/_testcapi/watchers.c	-	num_code_object_destroyed_events	-
 Modules/_testcapi/watchers.c	-	pyfunc_watchers	-
 Modules/_testcapi/watchers.c	-	func_watcher_ids	-
 Modules/_testcapi/watchers.c	-	func_watcher_callbacks	-
+Modules/_testcapimodule.c	-	BasicStaticTypes	-
+Modules/_testcapimodule.c	-	num_basic_static_types_used	-
 Modules/_testcapimodule.c	-	ContainerNoGC_members	-
 Modules/_testcapimodule.c	-	ContainerNoGC_type	-
 Modules/_testcapimodule.c	-	FmData	-
@@ -504,7 +530,7 @@ Modules/_testcapimodule.c	make_exception_with_doc	kwlist	-
 Modules/_testcapimodule.c	raise_SIGINT_then_send_None	PyId_send	-
 Modules/_testcapimodule.c	slot_tp_del	PyId___tp_del__	-
 Modules/_testcapimodule.c	test_capsule	buffer	-
-Modules/_testcapimodule.c	test_empty_argparse	kwlist	-
+Modules/_testcapimodule.c	getargs_empty	kwlist	-
 Modules/_testcapimodule.c	test_structmembers_new	keywords	-
 Modules/_testcapimodule.c	getargs_s_hash_int	keywords	-
 Modules/_testcapimodule.c	-	g_dict_watch_events	-
@@ -514,6 +540,7 @@ Modules/_testcapimodule.c	-	g_type_watchers_installed	-
 Modules/_testimportmultiple.c	-	_barmodule	-
 Modules/_testimportmultiple.c	-	_foomodule	-
 Modules/_testimportmultiple.c	-	_testimportmultiple	-
+Modules/_testinternalcapi.c	-	pending_identify_result	-
 Modules/_testmultiphase.c	-	Example_Type_slots	-
 Modules/_testmultiphase.c	-	Example_Type_spec	-
 Modules/_testmultiphase.c	-	Example_methods	-
@@ -538,7 +565,6 @@ Modules/_testmultiphase.c	-	def_nonascii_latin	-
 Modules/_testmultiphase.c	-	def_nonmodule	-
 Modules/_testmultiphase.c	-	def_nonmodule_with_exec_slots	-
 Modules/_testmultiphase.c	-	def_nonmodule_with_methods	-
-Modules/_testmultiphase.c	-	imp_dummy_def	-
 Modules/_testmultiphase.c	-	main_def	-
 Modules/_testmultiphase.c	-	main_slots	-
 Modules/_testmultiphase.c	-	meth_state_access_slots	-
@@ -560,29 +586,33 @@ Modules/_testmultiphase.c	-	uninitialized_def	-
 Modules/_testsinglephase.c	-	global_state	-
 Modules/_xxtestfuzz/_xxtestfuzz.c	-	_fuzzmodule	-
 Modules/_xxtestfuzz/_xxtestfuzz.c	-	module_methods	-
-Modules/_xxtestfuzz/fuzzer.c	-	SRE_FLAG_DEBUG	-
+Modules/_xxtestfuzz/fuzzer.c	-	RE_FLAG_DEBUG	-
 Modules/_xxtestfuzz/fuzzer.c	-	ast_literal_eval_method	-
+Modules/_xxtestfuzz/fuzzer.c	-	bytesio_type	-
 Modules/_xxtestfuzz/fuzzer.c	-	compiled_patterns	-
 Modules/_xxtestfuzz/fuzzer.c	-	csv_error	-
 Modules/_xxtestfuzz/fuzzer.c	-	csv_module	-
 Modules/_xxtestfuzz/fuzzer.c	-	json_loads_method	-
 Modules/_xxtestfuzz/fuzzer.c	-	regex_patterns	-
-Modules/_xxtestfuzz/fuzzer.c	-	sre_compile_method	-
-Modules/_xxtestfuzz/fuzzer.c	-	sre_error_exception	-
+Modules/_xxtestfuzz/fuzzer.c	-	re_compile_method	-
+Modules/_xxtestfuzz/fuzzer.c	-	re_error_exception	-
 Modules/_xxtestfuzz/fuzzer.c	-	struct_error	-
 Modules/_xxtestfuzz/fuzzer.c	-	struct_unpack_method	-
+Modules/_xxtestfuzz/fuzzer.c	-	xmlparser_type	-
 Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	CSV_READER_INITIALIZED	-
 Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	JSON_LOADS_INITIALIZED	-
 Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	SRE_COMPILE_INITIALIZED	-
 Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	SRE_MATCH_INITIALIZED	-
 Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	STRUCT_UNPACK_INITIALIZED	-
 Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	AST_LITERAL_EVAL_INITIALIZED	-
+Modules/_xxtestfuzz/fuzzer.c	LLVMFuzzerTestOneInput	ELEMENTTREE_PARSEWHOLE_INITIALIZED	-
 
 ##-----------------------
 ## the analyzer should have ignored these
 # XXX Fix the analyzer.
 
 ## forward/extern references
+Include/internal/pycore_importdl.h	-	_PyImport_DynLoadFiletab	-
 Include/py_curses.h	-	PyCurses_API	-
 Include/pydecimal.h	-	_decimal_api	-
 Modules/_blake2/blake2module.c	-	blake2b_type_spec	-
@@ -644,7 +674,6 @@ Objects/object.c	-	_PyLineIterator	-
 Objects/object.c	-	_PyPositionsIterator	-
 Python/perf_trampoline.c	-	_Py_trampoline_func_start	-
 Python/perf_trampoline.c	-	_Py_trampoline_func_end	-
-Python/importdl.h	-	_PyImport_DynLoadFiletab	-
 Modules/expat/xmlrole.c	-	prolog0	-
 Modules/expat/xmlrole.c	-	prolog1	-
 Modules/expat/xmlrole.c	-	prolog2	-
@@ -700,3 +729,6 @@ Modules/expat/xmlrole.c	-	error	-
 ## other
 Modules/_io/_iomodule.c	-	_PyIO_Module	-
 Modules/_sqlite/module.c	-	_sqlite3module	-
+Python/optimizer_analysis.c	-	_Py_PartitionRootNode_Type	-
+Python/optimizer_analysis.c	-	_Py_UOpsAbstractInterpContext_Type	-
+Modules/clinic/md5module.c.h	_md5_md5	_keywords	-
diff --git a/Tools/c-analyzer/distutils/cygwinccompiler.py b/Tools/c-analyzer/distutils/cygwinccompiler.py
index a3505f31f1f0a2..a8409179d677a7 100644
--- a/Tools/c-analyzer/distutils/cygwinccompiler.py
+++ b/Tools/c-analyzer/distutils/cygwinccompiler.py
@@ -45,7 +45,6 @@
 # * mingw gcc 3.2/ld 2.13 works
 #   (ld supports -shared)
 
-import os
 import sys
 from subprocess import Popen, PIPE, check_output
 import re
diff --git a/Tools/c-analyzer/distutils/unixccompiler.py b/Tools/c-analyzer/distutils/unixccompiler.py
index 1a3a8e5255070d..1cb1964214eb30 100644
--- a/Tools/c-analyzer/distutils/unixccompiler.py
+++ b/Tools/c-analyzer/distutils/unixccompiler.py
@@ -13,7 +13,7 @@
   * link shared library handled by 'cc -shared'
 """
 
-import os, sys, re
+import os, sys
 
 from distutils.dep_util import newer
 from distutils.ccompiler import CCompiler, gen_preprocess_options
diff --git a/Tools/cases_generator/README.md b/Tools/cases_generator/README.md
index c595a932ac4470..ed802e44f31ad5 100644
--- a/Tools/cases_generator/README.md
+++ b/Tools/cases_generator/README.md
@@ -7,10 +7,14 @@ What's currently here:
 
 - `lexer.py`: lexer for C, originally written by Mark Shannon
 - `plexer.py`: OO interface on top of lexer.py; main class: `PLexer`
-- `parser.py`: Parser for instruction definition DSL; main class `Parser`
+- `parsing.py`: Parser for instruction definition DSL; main class `Parser`
 - `generate_cases.py`: driver script to read `Python/bytecodes.c` and
-  write `Python/generated_cases.c.h`
-- `test_generator.py`: tests, require manual running using `pytest`
+  write `Python/generated_cases.c.h` (and several other files)
+- `analysis.py`: `Analyzer` class used to read the input files
+- `flags.py`: abstractions related to metadata flags for instructions
+- `formatting.py`: `Formatter` class used to write the output files
+- `instructions.py`: classes to analyze and write instructions
+- `stacking.py`: code to handle generalized stack effects
 
 Note that there is some dummy C code at the top and bottom of
 `Python/bytecodes.c`
diff --git a/Tools/cases_generator/_typing_backports.py b/Tools/cases_generator/_typing_backports.py
new file mode 100644
index 00000000000000..c2aa50804cefe2
--- /dev/null
+++ b/Tools/cases_generator/_typing_backports.py
@@ -0,0 +1,15 @@
+"""Backports from newer versions of the typing module.
+
+We backport these features here so that Python can still build
+while using an older Python version for PYTHON_FOR_REGEN.
+"""
+
+from typing import NoReturn
+
+
+def assert_never(obj: NoReturn) -> NoReturn:
+    """Statically assert that a line of code is unreachable.
+
+    Backport of typing.assert_never (introduced in Python 3.11).
+    """
+    raise AssertionError(f"Expected code to be unreachable, but got: {obj}")
diff --git a/Tools/cases_generator/analysis.py b/Tools/cases_generator/analysis.py
new file mode 100644
index 00000000000000..26d92c13cd82ab
--- /dev/null
+++ b/Tools/cases_generator/analysis.py
@@ -0,0 +1,487 @@
+import re
+import sys
+import typing
+
+from _typing_backports import assert_never
+from flags import InstructionFlags, variable_used
+from formatting import prettify_filename, UNUSED
+from instructions import (
+    ActiveCacheEffect,
+    Component,
+    Instruction,
+    InstructionOrCacheEffect,
+    MacroInstruction,
+    MacroParts,
+    PseudoInstruction,
+)
+import parsing
+from parsing import StackEffect
+
+BEGIN_MARKER = "// BEGIN BYTECODES //"
+END_MARKER = "// END BYTECODES //"
+
+RESERVED_WORDS = {
+    "co_consts": "Use FRAME_CO_CONSTS.",
+    "co_names": "Use FRAME_CO_NAMES.",
+}
+
+RE_GO_TO_INSTR = r"^\s*GO_TO_INSTRUCTION\((\w+)\);\s*(?://.*)?$"
+
+
+class Analyzer:
+    """Parse input, analyze it, and write to output."""
+
+    input_filenames: list[str]
+    errors: int = 0
+    warnings: int = 0
+
+    def __init__(self, input_filenames: list[str]):
+        self.input_filenames = input_filenames
+
+    def message(self, msg: str, node: parsing.Node) -> None:
+        lineno = 0
+        filename = "<unknown file>"
+        if context := node.context:
+            filename = context.owner.filename
+            # Use line number of first non-comment in the node
+            for token in context.owner.tokens[context.begin : context.end]:
+                lineno = token.line
+                if token.kind != "COMMENT":
+                    break
+        print(f"{filename}:{lineno}: {msg}", file=sys.stderr)
+
+    def error(self, msg: str, node: parsing.Node) -> None:
+        self.message("error: " + msg, node)
+        self.errors += 1
+
+    def warning(self, msg: str, node: parsing.Node) -> None:
+        self.message("warning: " + msg, node)
+        self.warnings += 1
+
+    def note(self, msg: str, node: parsing.Node) -> None:
+        self.message("note: " + msg, node)
+
+    everything: list[
+        parsing.InstDef
+        | parsing.Macro
+        | parsing.Pseudo
+    ]
+    instrs: dict[str, Instruction]  # Includes ops
+    macros: dict[str, parsing.Macro]
+    macro_instrs: dict[str, MacroInstruction]
+    families: dict[str, parsing.Family]
+    pseudos: dict[str, parsing.Pseudo]
+    pseudo_instrs: dict[str, PseudoInstruction]
+
+    def parse(self) -> None:
+        """Parse the source text.
+
+        We only want the parser to see the stuff between the
+        begin and end markers.
+        """
+
+        self.everything = []
+        self.instrs = {}
+        self.macros = {}
+        self.families = {}
+        self.pseudos = {}
+
+        instrs_idx: dict[str, int] = dict()
+
+        for filename in self.input_filenames:
+            self.parse_file(filename, instrs_idx)
+
+        files = " + ".join(self.input_filenames)
+        n_instrs = len(set(self.instrs) & set(self.macros))
+        n_ops = len(self.instrs) - n_instrs
+        print(
+            f"Read {n_instrs} instructions, {n_ops} ops, "
+            f"{len(self.macros)} macros, {len(self.pseudos)} pseudos, "
+            f"and {len(self.families)} families from {files}",
+            file=sys.stderr,
+        )
+
+    def parse_file(self, filename: str, instrs_idx: dict[str, int]) -> None:
+        with open(filename) as file:
+            src = file.read()
+
+        psr = parsing.Parser(src, filename=prettify_filename(filename))
+
+        # Skip until begin marker
+        while tkn := psr.next(raw=True):
+            if tkn.text == BEGIN_MARKER:
+                break
+        else:
+            raise psr.make_syntax_error(
+                f"Couldn't find {BEGIN_MARKER!r} in {psr.filename}"
+            )
+        start = psr.getpos()
+
+        # Find end marker, then delete everything after it
+        while tkn := psr.next(raw=True):
+            if tkn.text == END_MARKER:
+                break
+        del psr.tokens[psr.getpos() - 1 :]
+
+        # Parse from start
+        psr.setpos(start)
+        thing: parsing.Node | None
+        thing_first_token = psr.peek()
+        while thing := psr.definition():
+            thing = typing.cast(
+                parsing.InstDef | parsing.Macro | parsing.Pseudo | parsing.Family, thing
+            )
+            if ws := [w for w in RESERVED_WORDS if variable_used(thing, w)]:
+                self.error(
+                    f"'{ws[0]}' is a reserved word. {RESERVED_WORDS[ws[0]]}", thing
+                )
+
+            match thing:
+                case parsing.InstDef(name=name):
+                    macro: parsing.Macro | None = None
+                    if thing.kind == "inst" and "override" not in thing.annotations:
+                        macro = parsing.Macro(name, [parsing.OpName(name)])
+                    if name in self.instrs:
+                        if "override" not in thing.annotations:
+                            raise psr.make_syntax_error(
+                                f"Duplicate definition of '{name}' @ {thing.context} "
+                                f"previous definition @ {self.instrs[name].inst.context}",
+                                thing_first_token,
+                            )
+                        self.everything[instrs_idx[name]] = thing
+                    if name not in self.instrs and "override" in thing.annotations:
+                        raise psr.make_syntax_error(
+                            f"Definition of '{name}' @ {thing.context} is supposed to be "
+                            "an override but no previous definition exists.",
+                            thing_first_token,
+                        )
+                    self.instrs[name] = Instruction(thing)
+                    instrs_idx[name] = len(self.everything)
+                    self.everything.append(thing)
+                    if macro is not None:
+                        self.macros[macro.name] = macro
+                        self.everything.append(macro)
+                case parsing.Macro(name):
+                    self.macros[name] = thing
+                    self.everything.append(thing)
+                case parsing.Family(name):
+                    self.families[name] = thing
+                case parsing.Pseudo(name):
+                    self.pseudos[name] = thing
+                    self.everything.append(thing)
+                case _:
+                    assert_never(thing)
+        if not psr.eof():
+            raise psr.make_syntax_error(f"Extra stuff at the end of {filename}")
+
+    def analyze(self) -> None:
+        """Analyze the inputs.
+
+        Raises SystemExit if there is an error.
+        """
+        self.analyze_macros_and_pseudos()
+        self.map_families()
+        self.mark_predictions()
+        self.check_families()
+
+    def mark_predictions(self) -> None:
+        """Mark the instructions that need PREDICTED() labels."""
+        # Start with family heads
+        for family in self.families.values():
+            if family.name in self.instrs:
+                self.instrs[family.name].predicted = True
+            if family.name in self.macro_instrs:
+                self.macro_instrs[family.name].predicted = True
+        # Also look for GO_TO_INSTRUCTION() calls
+        for instr in self.instrs.values():
+            targets: set[str] = set()
+            for line in instr.block_text:
+                if m := re.match(RE_GO_TO_INSTR, line):
+                    targets.add(m.group(1))
+            for target in targets:
+                if target_instr := self.instrs.get(target):
+                    target_instr.predicted = True
+                if target_macro := self.macro_instrs.get(target):
+                    target_macro.predicted = True
+                if not target_instr and not target_macro:
+                    self.error(
+                        f"Unknown instruction {target!r} predicted in {instr.name!r}",
+                        instr.inst,  # TODO: Use better location
+                    )
+
+    def map_families(self) -> None:
+        """Link instruction names back to their family, if they have one."""
+        for family in self.families.values():
+            for member in [family.name] + family.members:
+                if member_instr := self.instrs.get(member):
+                    if (
+                        member_instr.family is not family
+                        and member_instr.family is not None
+                    ):
+                        self.error(
+                            f"Instruction {member} is a member of multiple families "
+                            f"({member_instr.family.name}, {family.name}).",
+                            family,
+                        )
+                    else:
+                        member_instr.family = family
+                if member_mac := self.macro_instrs.get(member):
+                    assert member_mac.family is None, (member, member_mac.family.name)
+                    member_mac.family = family
+                if not member_instr and not member_mac:
+                    self.error(
+                        f"Unknown instruction {member!r} referenced in family {family.name!r}",
+                        family,
+                    )
+        # A sanctioned exception:
+        # This opcode is a member of the family but it doesn't pass the checks.
+        if mac := self.macro_instrs.get("BINARY_OP_INPLACE_ADD_UNICODE"):
+            mac.family = self.families.get("BINARY_OP")
+
+    def check_families(self) -> None:
+        """Check each family:
+
+        - Must have at least 2 members (including head)
+        - Head and all members must be known instructions
+        - Head and all members must have the same cache, input and output effects
+        """
+        for family in self.families.values():
+            if family.name not in self.macro_instrs and family.name not in self.instrs:
+                self.error(
+                    f"Family {family.name!r} has unknown instruction {family.name!r}",
+                    family,
+                )
+            members = [
+                member
+                for member in family.members
+                if member in self.instrs or member in self.macro_instrs
+            ]
+            if members != family.members:
+                unknown = set(family.members) - set(members)
+                self.error(
+                    f"Family {family.name!r} has unknown members: {unknown}", family
+                )
+            expected_effects = self.effect_counts(family.name)
+            for member in members:
+                member_effects = self.effect_counts(member)
+                if member_effects != expected_effects:
+                    self.error(
+                        f"Family {family.name!r} has inconsistent "
+                        f"(cache, input, output) effects:\n"
+                        f"  {family.name} = {expected_effects}; "
+                        f"{member} = {member_effects}",
+                        family,
+                    )
+
+    def effect_counts(self, name: str) -> tuple[int, int, int]:
+        if mac := self.macro_instrs.get(name):
+            cache = mac.cache_offset
+            input, output = 0, 0
+            for part in mac.parts:
+                if isinstance(part, Component):
+                    # A component may pop what the previous component pushed,
+                    # so we offset the input/output counts by that.
+                    delta_i = len(part.instr.input_effects)
+                    delta_o = len(part.instr.output_effects)
+                    offset = min(delta_i, output)
+                    input += delta_i - offset
+                    output += delta_o - offset
+        else:
+            assert False, f"Unknown instruction {name!r}"
+        return cache, input, output
+
+    def analyze_macros_and_pseudos(self) -> None:
+        """Analyze each macro and pseudo instruction."""
+        self.macro_instrs = {}
+        self.pseudo_instrs = {}
+        for name, macro in self.macros.items():
+            self.macro_instrs[name] = mac = self.analyze_macro(macro)
+            self.check_macro_consistency(mac)
+        for name, pseudo in self.pseudos.items():
+            self.pseudo_instrs[name] = self.analyze_pseudo(pseudo)
+
+    # TODO: Merge with similar code in stacking.py, write_components()
+    def check_macro_consistency(self, mac: MacroInstruction) -> None:
+        def get_var_names(instr: Instruction) -> dict[str, StackEffect]:
+            vars: dict[str, StackEffect] = {}
+            for eff in instr.input_effects + instr.output_effects:
+                if eff.name == UNUSED:
+                    continue
+                if eff.name in vars:
+                    if vars[eff.name] != eff:
+                        self.error(
+                            f"Instruction {instr.name!r} has "
+                            f"inconsistent type/cond/size for variable "
+                            f"{eff.name!r}: {vars[eff.name]} vs {eff}",
+                            instr.inst,
+                        )
+                else:
+                    vars[eff.name] = eff
+            return vars
+
+        all_vars: dict[str, StackEffect] = {}
+        # print("Checking", mac.name)
+        prevop: Instruction | None = None
+        for part in mac.parts:
+            if not isinstance(part, Component):
+                continue
+            vars = get_var_names(part.instr)
+            # print("    //", part.instr.name, "//", vars)
+            for name, eff in vars.items():
+                if name in all_vars:
+                    if all_vars[name] != eff:
+                        self.error(
+                            f"Macro {mac.name!r} has "
+                            f"inconsistent type/cond/size for variable "
+                            f"{name!r}: "
+                            f"{all_vars[name]} vs {eff} in {part.instr.name!r}",
+                            mac.macro,
+                        )
+                else:
+                    all_vars[name] = eff
+            if prevop is not None:
+                pushes = list(prevop.output_effects)
+                pops = list(reversed(part.instr.input_effects))
+                copies: list[tuple[StackEffect, StackEffect]] = []
+                while pushes and pops and pushes[-1] == pops[0]:
+                    src, dst = pushes.pop(), pops.pop(0)
+                    if src.name == dst.name or dst.name == UNUSED:
+                        continue
+                    copies.append((src, dst))
+                reads = set(copy[0].name for copy in copies)
+                writes = set(copy[1].name for copy in copies)
+                if reads & writes:
+                    self.error(
+                        f"Macro {mac.name!r} has conflicting copies "
+                        f"(source of one copy is destination of another): "
+                        f"{reads & writes}",
+                        mac.macro,
+                    )
+            prevop = part.instr
+
+    def analyze_macro(self, macro: parsing.Macro) -> MacroInstruction:
+        components = self.check_macro_components(macro)
+        parts: MacroParts = []
+        flags = InstructionFlags.newEmpty()
+        offset = 0
+        for component in components:
+            match component:
+                case parsing.CacheEffect() as ceffect:
+                    parts.append(ceffect)
+                    offset += ceffect.size
+                case Instruction() as instr:
+                    part, offset = self.analyze_instruction(instr, offset)
+                    parts.append(part)
+                    if instr.name != "_SAVE_RETURN_OFFSET":
+                        # _SAVE_RETURN_OFFSET's oparg does not transfer
+                        flags.add(instr.instr_flags)
+                case _:
+                    assert_never(component)
+        format = "IB" if flags.HAS_ARG_FLAG else "IX"
+        if offset:
+            format += "C" + "0" * (offset - 1)
+        return MacroInstruction(macro.name, format, flags, macro, parts, offset)
+
+    def analyze_pseudo(self, pseudo: parsing.Pseudo) -> PseudoInstruction:
+        targets: list[Instruction | MacroInstruction] = []
+        for target_name in pseudo.targets:
+            if target_name in self.instrs:
+                targets.append(self.instrs[target_name])
+            else:
+                targets.append(self.macro_instrs[target_name])
+        assert targets
+        ignored_flags = {"HAS_EVAL_BREAK_FLAG", "HAS_DEOPT_FLAG", "HAS_ERROR_FLAG",
+                          "HAS_ESCAPES_FLAG"}
+        assert len({t.instr_flags.bitmap(ignore=ignored_flags) for t in targets}) == 1
+
+        flags = InstructionFlags(**{f"{f}_FLAG" : True for f in pseudo.flags})
+        for t in targets:
+            flags.add(t.instr_flags)
+        return PseudoInstruction(pseudo.name, targets, flags)
+
+    def analyze_instruction(
+        self, instr: Instruction, offset: int
+    ) -> tuple[Component, int]:
+        active_effects: list[ActiveCacheEffect] = []
+        for ceffect in instr.cache_effects:
+            if ceffect.name != UNUSED:
+                active_effects.append(ActiveCacheEffect(ceffect, offset))
+            offset += ceffect.size
+        return (
+            Component(instr, active_effects),
+            offset,
+        )
+
+    def check_macro_components(
+        self, macro: parsing.Macro
+    ) -> list[InstructionOrCacheEffect]:
+        components: list[InstructionOrCacheEffect] = []
+        for uop in macro.uops:
+            match uop:
+                case parsing.OpName(name):
+                    if name not in self.instrs:
+                        self.error(f"Unknown instruction {name!r}", macro)
+                    else:
+                        components.append(self.instrs[name])
+                case parsing.CacheEffect():
+                    components.append(uop)
+                case _:
+                    assert_never(uop)
+        return components
+
+    def report_non_viable_uops(self, jsonfile: str) -> None:
+        print("The following ops are not viable uops:")
+        skips = {
+            "CACHE",
+            "RESERVED",
+            "INTERPRETER_EXIT",
+            "JUMP_BACKWARD",
+            "LOAD_FAST_LOAD_FAST",
+            "LOAD_CONST_LOAD_FAST",
+            "STORE_FAST_STORE_FAST",
+            "POP_JUMP_IF_TRUE",
+            "POP_JUMP_IF_FALSE",
+            "_ITER_JUMP_LIST",
+            "_ITER_JUMP_TUPLE",
+            "_ITER_JUMP_RANGE",
+        }
+        try:
+            # Secret feature: if bmraw.json exists, print and sort by execution count
+            counts = load_execution_counts(jsonfile)
+        except FileNotFoundError as err:
+            counts = {}
+        non_viable = [
+            instr
+            for instr in self.instrs.values()
+            if instr.name not in skips
+            and not instr.name.startswith("INSTRUMENTED_")
+            and not instr.is_viable_uop()
+        ]
+        non_viable.sort(key=lambda instr: (-counts.get(instr.name, 0), instr.name))
+        for instr in non_viable:
+            if instr.name in counts:
+                scount = f"{counts[instr.name]:,}"
+            else:
+                scount = ""
+            print(f"    {scount:>15} {instr.name:<35}", end="")
+            if instr.name in self.families:
+                print("      (unspecialized)", end="")
+            elif instr.family is not None:
+                print(f" (specialization of {instr.family.name})", end="")
+            print()
+
+
+def load_execution_counts(jsonfile: str) -> dict[str, int]:
+    import json
+
+    with open(jsonfile) as f:
+        jsondata = json.load(f)
+
+    # Look for keys like "opcode[LOAD_FAST].execution_count"
+    prefix = "opcode["
+    suffix = "].execution_count"
+    res: dict[str, int] = {}
+    for key, value in jsondata.items():
+        if key.startswith(prefix) and key.endswith(suffix):
+            res[key[len(prefix) : -len(suffix)]] = value
+    return res
diff --git a/Tools/cases_generator/analyzer.py b/Tools/cases_generator/analyzer.py
new file mode 100644
index 00000000000000..027f9861a1c0eb
--- /dev/null
+++ b/Tools/cases_generator/analyzer.py
@@ -0,0 +1,456 @@
+from dataclasses import dataclass
+import lexer
+import parser
+from typing import Optional
+
+
+@dataclass
+class Properties:
+    escapes: bool
+    infallible: bool
+    deopts: bool
+    oparg: bool
+    jumps: bool
+    ends_with_eval_breaker: bool
+    needs_this: bool
+    always_exits: bool
+    stores_sp: bool
+
+    def dump(self, indent: str) -> None:
+        print(indent, end="")
+        text = ", ".join([f"{key}: {value}" for (key, value) in self.__dict__.items()])
+        print(indent, text, sep="")
+
+    @staticmethod
+    def from_list(properties: list["Properties"]) -> "Properties":
+        return Properties(
+            escapes=any(p.escapes for p in properties),
+            infallible=all(p.infallible for p in properties),
+            deopts=any(p.deopts for p in properties),
+            oparg=any(p.oparg for p in properties),
+            jumps=any(p.jumps for p in properties),
+            ends_with_eval_breaker=any(p.ends_with_eval_breaker for p in properties),
+            needs_this=any(p.needs_this for p in properties),
+            always_exits=any(p.always_exits for p in properties),
+            stores_sp=any(p.stores_sp for p in properties),
+        )
+
+
+SKIP_PROPERTIES = Properties(
+    escapes=False,
+    infallible=True,
+    deopts=False,
+    oparg=False,
+    jumps=False,
+    ends_with_eval_breaker=False,
+    needs_this=False,
+    always_exits=False,
+    stores_sp=False,
+)
+
+
+@dataclass
+class Skip:
+    "Unused cache entry"
+    size: int
+
+    @property
+    def name(self) -> str:
+        return f"unused/{self.size}"
+
+    @property
+    def properties(self) -> Properties:
+        return SKIP_PROPERTIES
+
+
+@dataclass
+class StackItem:
+    name: str
+    type: str | None
+    condition: str | None
+    size: str
+    peek: bool = False
+
+    def __str__(self) -> str:
+        cond = f" if ({self.condition})" if self.condition else ""
+        size = f"[{self.size}]" if self.size != "1" else ""
+        type = "" if self.type is None else f"{self.type} "
+        return f"{type}{self.name}{size}{cond} {self.peek}"
+
+    def is_array(self) -> bool:
+        return self.type == "PyObject **"
+
+
+@dataclass
+class StackEffect:
+    inputs: list[StackItem]
+    outputs: list[StackItem]
+
+    def __str__(self) -> str:
+        return f"({', '.join([str(i) for i in self.inputs])} -- {', '.join([str(i) for i in self.outputs])})"
+
+
+@dataclass
+class CacheEntry:
+    name: str
+    size: int
+
+    def __str__(self) -> str:
+        return f"{self.name}/{self.size}"
+
+
+@dataclass
+class Uop:
+    name: str
+    context: parser.Context | None
+    annotations: list[str]
+    stack: StackEffect
+    caches: list[CacheEntry]
+    body: list[lexer.Token]
+    properties: Properties
+    _size: int = -1
+
+    def dump(self, indent: str) -> None:
+        print(
+            indent, self.name, ", ".join(self.annotations) if self.annotations else ""
+        )
+        print(indent, self.stack, ", ".join([str(c) for c in self.caches]))
+        self.properties.dump("    " + indent)
+
+    @property
+    def size(self) -> int:
+        if self._size < 0:
+            self._size = sum(c.size for c in self.caches)
+        return self._size
+
+
+Part = Uop | Skip
+
+
+@dataclass
+class Instruction:
+    name: str
+    parts: list[Part]
+    _properties: Properties | None
+    is_target: bool = False
+    family: Optional["Family"] = None
+
+    @property
+    def properties(self) -> Properties:
+        if self._properties is None:
+            self._properties = self._compute_properties()
+        return self._properties
+
+    def _compute_properties(self) -> Properties:
+        return Properties.from_list([part.properties for part in self.parts])
+
+    def dump(self, indent: str) -> None:
+        print(indent, self.name, "=", ", ".join([part.name for part in self.parts]))
+        self.properties.dump("    " + indent)
+
+    @property
+    def size(self) -> int:
+        return 1 + sum(part.size for part in self.parts)
+
+
+@dataclass
+class PseudoInstruction:
+    name: str
+    targets: list[Instruction]
+    flags: list[str]
+
+    def dump(self, indent: str) -> None:
+        print(indent, self.name, "->", " or ".join([t.name for t in self.targets]))
+
+
+@dataclass
+class Family:
+    name: str
+    size: str
+    members: list[Instruction]
+
+    def dump(self, indent: str) -> None:
+        print(indent, self.name, "= ", ", ".join([m.name for m in self.members]))
+
+
+@dataclass
+class Analysis:
+    instructions: dict[str, Instruction]
+    uops: dict[str, Uop]
+    families: dict[str, Family]
+    pseudos: dict[str, PseudoInstruction]
+
+
+def analysis_error(message: str, tkn: lexer.Token) -> SyntaxError:
+    # To do -- support file and line output
+    # Construct a SyntaxError instance from message and token
+    return lexer.make_syntax_error(message, "", tkn.line, tkn.column, "")
+
+
+def override_error(
+    name: str,
+    context: parser.Context | None,
+    prev_context: parser.Context | None,
+    token: lexer.Token,
+) -> SyntaxError:
+    return analysis_error(
+        f"Duplicate definition of '{name}' @ {context} "
+        f"previous definition @ {prev_context}",
+        token,
+    )
+
+
+def convert_stack_item(item: parser.StackEffect) -> StackItem:
+    return StackItem(item.name, item.type, item.cond, (item.size or "1"))
+
+
+def analyze_stack(op: parser.InstDef) -> StackEffect:
+    inputs: list[StackItem] = [
+        convert_stack_item(i) for i in op.inputs if isinstance(i, parser.StackEffect)
+    ]
+    outputs: list[StackItem] = [convert_stack_item(i) for i in op.outputs]
+    for input, output in zip(inputs, outputs):
+        if input.name == output.name:
+            input.peek = output.peek = True
+    return StackEffect(inputs, outputs)
+
+
+def analyze_caches(op: parser.InstDef) -> list[CacheEntry]:
+    caches: list[parser.CacheEffect] = [
+        i for i in op.inputs if isinstance(i, parser.CacheEffect)
+    ]
+    return [CacheEntry(i.name, int(i.size)) for i in caches]
+
+
+def variable_used(node: parser.InstDef, name: str) -> bool:
+    """Determine whether a variable with a given name is used in a node."""
+    return any(
+        token.kind == "IDENTIFIER" and token.text == name for token in node.tokens
+    )
+
+
+def is_infallible(op: parser.InstDef) -> bool:
+    return not (
+        variable_used(op, "ERROR_IF")
+        or variable_used(op, "error")
+        or variable_used(op, "pop_1_error")
+        or variable_used(op, "exception_unwind")
+        or variable_used(op, "resume_with_error")
+    )
+
+
+from flags import makes_escaping_api_call
+
+EXITS = {
+    "DISPATCH",
+    "GO_TO_INSTRUCTION",
+    "Py_UNREACHABLE",
+    "DISPATCH_INLINED",
+    "DISPATCH_GOTO",
+}
+
+
+def eval_breaker_at_end(op: parser.InstDef) -> bool:
+    return op.tokens[-5].text == "CHECK_EVAL_BREAKER"
+
+
+def always_exits(op: parser.InstDef) -> bool:
+    depth = 0
+    tkn_iter = iter(op.tokens)
+    for tkn in tkn_iter:
+        if tkn.kind == "LBRACE":
+            depth += 1
+        elif tkn.kind == "RBRACE":
+            depth -= 1
+        elif depth > 1:
+            continue
+        elif tkn.kind == "GOTO" or tkn.kind == "RETURN":
+            return True
+        elif tkn.kind == "KEYWORD":
+            if tkn.text in EXITS:
+                return True
+        elif tkn.kind == "IDENTIFIER":
+            if tkn.text in EXITS:
+                return True
+            if tkn.text == "DEOPT_IF" or tkn.text == "ERROR_IF":
+                next(tkn_iter)  # '('
+                t = next(tkn_iter)
+                if t.text == "true":
+                    return True
+    return False
+
+
+def compute_properties(op: parser.InstDef) -> Properties:
+    return Properties(
+        escapes=makes_escaping_api_call(op),
+        infallible=is_infallible(op),
+        deopts=variable_used(op, "DEOPT_IF"),
+        oparg=variable_used(op, "oparg"),
+        jumps=variable_used(op, "JUMPBY"),
+        ends_with_eval_breaker=eval_breaker_at_end(op),
+        needs_this=variable_used(op, "this_instr"),
+        always_exits=always_exits(op),
+        stores_sp=variable_used(op, "STORE_SP"),
+    )
+
+
+def make_uop(name: str, op: parser.InstDef) -> Uop:
+    return Uop(
+        name=name,
+        context=op.context,
+        annotations=op.annotations,
+        stack=analyze_stack(op),
+        caches=analyze_caches(op),
+        body=op.block.tokens,
+        properties=compute_properties(op),
+    )
+
+
+def add_op(op: parser.InstDef, uops: dict[str, Uop]) -> None:
+    assert op.kind == "op"
+    if op.name in uops:
+        if "override" not in op.annotations:
+            raise override_error(
+                op.name, op.context, uops[op.name].context, op.tokens[0]
+            )
+    uops[op.name] = make_uop(op.name, op)
+
+
+def add_instruction(
+    name: str, parts: list[Part], instructions: dict[str, Instruction]
+) -> None:
+    instructions[name] = Instruction(name, parts, None)
+
+
+def desugar_inst(
+    inst: parser.InstDef, instructions: dict[str, Instruction], uops: dict[str, Uop]
+) -> None:
+    assert inst.kind == "inst"
+    name = inst.name
+    uop = make_uop("_" + inst.name, inst)
+    uops[inst.name] = uop
+    add_instruction(name, [uop], instructions)
+
+
+def add_macro(
+    macro: parser.Macro, instructions: dict[str, Instruction], uops: dict[str, Uop]
+) -> None:
+    parts: list[Uop | Skip] = []
+    for part in macro.uops:
+        match part:
+            case parser.OpName():
+                if part.name not in uops:
+                    analysis_error(f"No Uop named {part.name}", macro.tokens[0])
+                parts.append(uops[part.name])
+            case parser.CacheEffect():
+                parts.append(Skip(part.size))
+            case _:
+                assert False
+    assert parts
+    add_instruction(macro.name, parts, instructions)
+
+
+def add_family(
+    pfamily: parser.Family,
+    instructions: dict[str, Instruction],
+    families: dict[str, Family],
+) -> None:
+    family = Family(
+        pfamily.name,
+        pfamily.size,
+        [instructions[member_name] for member_name in pfamily.members],
+    )
+    for member in family.members:
+        member.family = family
+    # The head of the family is an implicit jump target for DEOPTs
+    instructions[family.name].is_target = True
+    families[family.name] = family
+
+
+def add_pseudo(
+    pseudo: parser.Pseudo,
+    instructions: dict[str, Instruction],
+    pseudos: dict[str, PseudoInstruction],
+) -> None:
+    pseudos[pseudo.name] = PseudoInstruction(
+        pseudo.name,
+        [instructions[target] for target in pseudo.targets],
+        pseudo.flags,
+    )
+
+
+def analyze_forest(forest: list[parser.AstNode]) -> Analysis:
+    instructions: dict[str, Instruction] = {}
+    uops: dict[str, Uop] = {}
+    families: dict[str, Family] = {}
+    pseudos: dict[str, PseudoInstruction] = {}
+    for node in forest:
+        match node:
+            case parser.InstDef(name):
+                if node.kind == "inst":
+                    desugar_inst(node, instructions, uops)
+                else:
+                    assert node.kind == "op"
+                    add_op(node, uops)
+            case parser.Macro():
+                pass
+            case parser.Family():
+                pass
+            case parser.Pseudo():
+                pass
+            case _:
+                assert False
+    for node in forest:
+        if isinstance(node, parser.Macro):
+            add_macro(node, instructions, uops)
+    for node in forest:
+        match node:
+            case parser.Family():
+                add_family(node, instructions, families)
+            case parser.Pseudo():
+                add_pseudo(node, instructions, pseudos)
+            case _:
+                pass
+    for uop in uops.values():
+        tkn_iter = iter(uop.body)
+        for tkn in tkn_iter:
+            if tkn.kind == "IDENTIFIER" and tkn.text == "GO_TO_INSTRUCTION":
+                if next(tkn_iter).kind != "LPAREN":
+                    continue
+                target = next(tkn_iter)
+                if target.kind != "IDENTIFIER":
+                    continue
+                if target.text in instructions:
+                    instructions[target.text].is_target = True
+    # Hack
+    instructions["BINARY_OP_INPLACE_ADD_UNICODE"].family = families["BINARY_OP"]
+    return Analysis(instructions, uops, families, pseudos)
+
+
+def analyze_files(filenames: list[str]) -> Analysis:
+    return analyze_forest(parser.parse_files(filenames))
+
+
+def dump_analysis(analysis: Analysis) -> None:
+    print("Uops:")
+    for u in analysis.uops.values():
+        u.dump("    ")
+    print("Instructions:")
+    for i in analysis.instructions.values():
+        i.dump("    ")
+    print("Families:")
+    for f in analysis.families.values():
+        f.dump("    ")
+    print("Pseudos:")
+    for p in analysis.pseudos.values():
+        p.dump("    ")
+
+
+if __name__ == "__main__":
+    import sys
+
+    if len(sys.argv) < 2:
+        print("No input")
+    else:
+        filenames = sys.argv[1:]
+        dump_analysis(analyze_files(filenames))
diff --git a/Tools/cases_generator/cwriter.py b/Tools/cases_generator/cwriter.py
new file mode 100644
index 00000000000000..34e39855a9b40a
--- /dev/null
+++ b/Tools/cases_generator/cwriter.py
@@ -0,0 +1,116 @@
+from lexer import Token
+from typing import TextIO
+
+
+class CWriter:
+    "A writer that understands tokens and how to format C code"
+
+    last_token: Token | None
+
+    def __init__(self, out: TextIO, indent: int, line_directives: bool):
+        self.out = out
+        self.base_column = indent * 4
+        self.indents = [i * 4 for i in range(indent + 1)]
+        self.line_directives = line_directives
+        self.last_token = None
+        self.newline = True
+
+    def set_position(self, tkn: Token) -> None:
+        if self.last_token is not None:
+            if self.last_token.line < tkn.line:
+                self.out.write("\n")
+                if self.line_directives:
+                    self.out.write(f'#line {tkn.line} "{tkn.filename}"\n')
+                self.out.write(" " * self.indents[-1])
+            else:
+                gap = tkn.column - self.last_token.end_column
+                self.out.write(" " * gap)
+        elif self.newline:
+            self.out.write(" " * self.indents[-1])
+        self.last_token = tkn
+        self.newline = False
+
+    def emit_at(self, txt: str, where: Token) -> None:
+        self.set_position(where)
+        self.out.write(txt)
+
+    def maybe_dedent(self, txt: str) -> None:
+        parens = txt.count("(") - txt.count(")")
+        if parens < 0:
+            self.indents.pop()
+        elif "}" in txt or is_label(txt):
+            self.indents.pop()
+
+    def maybe_indent(self, txt: str) -> None:
+        parens = txt.count("(") - txt.count(")")
+        if parens > 0 and self.last_token:
+            offset = self.last_token.end_column - 1
+            if offset <= self.indents[-1] or offset > 40:
+                offset = self.indents[-1] + 4
+            self.indents.append(offset)
+        if is_label(txt):
+            self.indents.append(self.indents[-1] + 4)
+        elif "{" in txt:
+            if 'extern "C"' in txt:
+                self.indents.append(self.indents[-1])
+            else:
+                self.indents.append(self.indents[-1] + 4)
+
+    def emit_text(self, txt: str) -> None:
+        self.out.write(txt)
+
+    def emit_multiline_comment(self, tkn: Token) -> None:
+        self.set_position(tkn)
+        lines = tkn.text.splitlines(True)
+        first = True
+        for line in lines:
+            text = line.lstrip()
+            if first:
+                spaces = 0
+            else:
+                spaces = self.indents[-1]
+                if text.startswith("*"):
+                    spaces += 1
+                else:
+                    spaces += 3
+            first = False
+            self.out.write(" " * spaces)
+            self.out.write(text)
+
+    def emit_token(self, tkn: Token) -> None:
+        if tkn.kind == "COMMENT" and "\n" in tkn.text:
+            return self.emit_multiline_comment(tkn)
+        self.maybe_dedent(tkn.text)
+        self.set_position(tkn)
+        self.emit_text(tkn.text)
+        self.maybe_indent(tkn.text)
+
+    def emit_str(self, txt: str) -> None:
+        self.maybe_dedent(txt)
+        if self.newline and txt:
+            if txt[0] != "\n":
+                self.out.write(" " * self.indents[-1])
+            self.newline = False
+        self.emit_text(txt)
+        if txt.endswith("\n"):
+            self.newline = True
+        self.maybe_indent(txt)
+        self.last_token = None
+
+    def emit(self, txt: str | Token) -> None:
+        if isinstance(txt, Token):
+            self.emit_token(txt)
+        elif isinstance(txt, str):
+            self.emit_str(txt)
+        else:
+            assert False
+
+    def start_line(self) -> None:
+        if not self.newline:
+            self.out.write("\n")
+        self.newline = True
+        self.last_token = None
+
+
+def is_label(txt: str) -> bool:
+    return not txt.startswith("//") and txt.endswith(":")
diff --git a/Tools/cases_generator/flags.py b/Tools/cases_generator/flags.py
new file mode 100644
index 00000000000000..bf76112159e38e
--- /dev/null
+++ b/Tools/cases_generator/flags.py
@@ -0,0 +1,191 @@
+import dataclasses
+
+from formatting import Formatter
+import lexer as lx
+import parsing
+from typing import AbstractSet
+
+NON_ESCAPING_FUNCTIONS = (
+    "Py_INCREF",
+    "_PyDictOrValues_IsValues",
+    "_PyObject_DictOrValuesPointer",
+    "_PyDictOrValues_GetValues",
+    "_PyObject_MakeInstanceAttributesFromDict",
+    "Py_DECREF",
+    "_Py_DECREF_SPECIALIZED",
+    "DECREF_INPUTS_AND_REUSE_FLOAT",
+    "PyUnicode_Append",
+    "_PyLong_IsZero",
+    "Py_SIZE",
+    "Py_TYPE",
+    "PyList_GET_ITEM",
+    "PyTuple_GET_ITEM",
+    "PyList_GET_SIZE",
+    "PyTuple_GET_SIZE",
+    "Py_ARRAY_LENGTH",
+    "Py_Unicode_GET_LENGTH",
+    "PyUnicode_READ_CHAR",
+    "_Py_SINGLETON",
+    "PyUnicode_GET_LENGTH",
+    "_PyLong_IsCompact",
+    "_PyLong_IsNonNegativeCompact",
+    "_PyLong_CompactValue",
+    "_Py_NewRef",
+    "_Py_IsImmortal",
+    "_Py_STR",
+    "_PyLong_Add",
+    "_PyLong_Multiply",
+    "_PyLong_Subtract",
+    "Py_NewRef",
+    "_PyList_ITEMS",
+    "_PyTuple_ITEMS",
+    "_PyList_AppendTakeRef",
+    "_Py_atomic_load_uintptr_relaxed",
+    "_PyFrame_GetCode",
+    "_PyThreadState_HasStackSpace",
+)
+
+ESCAPING_FUNCTIONS = (
+    "import_name",
+    "import_from",
+)
+
+
+def makes_escaping_api_call(instr: parsing.InstDef) -> bool:
+    if "CALL_INTRINSIC" in instr.name:
+        return True
+    tkns = iter(instr.tokens)
+    for tkn in tkns:
+        if tkn.kind != lx.IDENTIFIER:
+            continue
+        try:
+            next_tkn = next(tkns)
+        except StopIteration:
+            return False
+        if next_tkn.kind != lx.LPAREN:
+            continue
+        if tkn.text in ESCAPING_FUNCTIONS:
+            return True
+        if not tkn.text.startswith("Py") and not tkn.text.startswith("_Py"):
+            continue
+        if tkn.text.endswith("Check"):
+            continue
+        if tkn.text.startswith("Py_Is"):
+            continue
+        if tkn.text.endswith("CheckExact"):
+            continue
+        if tkn.text in NON_ESCAPING_FUNCTIONS:
+            continue
+        return True
+    return False
+
+
+@dataclasses.dataclass
+class InstructionFlags:
+    """Construct and manipulate instruction flags"""
+
+    HAS_ARG_FLAG: bool = False
+    HAS_CONST_FLAG: bool = False
+    HAS_NAME_FLAG: bool = False
+    HAS_JUMP_FLAG: bool = False
+    HAS_FREE_FLAG: bool = False
+    HAS_LOCAL_FLAG: bool = False
+    HAS_EVAL_BREAK_FLAG: bool = False
+    HAS_DEOPT_FLAG: bool = False
+    HAS_ERROR_FLAG: bool = False
+    HAS_ESCAPES_FLAG: bool = False
+
+    def __post_init__(self) -> None:
+        self.bitmask = {name: (1 << i) for i, name in enumerate(self.names())}
+
+    @staticmethod
+    def fromInstruction(instr: parsing.InstDef) -> "InstructionFlags":
+        has_free = (
+            variable_used(instr, "PyCell_New")
+            or variable_used(instr, "PyCell_GET")
+            or variable_used(instr, "PyCell_SET")
+        )
+
+        return InstructionFlags(
+            HAS_ARG_FLAG=variable_used(instr, "oparg"),
+            HAS_CONST_FLAG=variable_used(instr, "FRAME_CO_CONSTS"),
+            HAS_NAME_FLAG=variable_used(instr, "FRAME_CO_NAMES"),
+            HAS_JUMP_FLAG=variable_used(instr, "JUMPBY"),
+            HAS_FREE_FLAG=has_free,
+            HAS_LOCAL_FLAG=(
+                variable_used(instr, "GETLOCAL") or variable_used(instr, "SETLOCAL")
+            )
+            and not has_free,
+            HAS_EVAL_BREAK_FLAG=variable_used(instr, "CHECK_EVAL_BREAKER"),
+            HAS_DEOPT_FLAG=variable_used(instr, "DEOPT_IF"),
+            HAS_ERROR_FLAG=(
+                variable_used(instr, "ERROR_IF")
+                or variable_used(instr, "error")
+                or variable_used(instr, "pop_1_error")
+                or variable_used(instr, "exception_unwind")
+                or variable_used(instr, "resume_with_error")
+            ),
+            HAS_ESCAPES_FLAG=makes_escaping_api_call(instr),
+        )
+
+    @staticmethod
+    def newEmpty() -> "InstructionFlags":
+        return InstructionFlags()
+
+    def add(self, other: "InstructionFlags") -> None:
+        for name, value in dataclasses.asdict(other).items():
+            if value:
+                setattr(self, name, value)
+
+    def names(self, value: bool | None = None) -> list[str]:
+        if value is None:
+            return list(dataclasses.asdict(self).keys())
+        return [n for n, v in dataclasses.asdict(self).items() if v == value]
+
+    def bitmap(self, ignore: AbstractSet[str] = frozenset()) -> int:
+        flags = 0
+        assert all(hasattr(self, name) for name in ignore)
+        for name in self.names():
+            if getattr(self, name) and name not in ignore:
+                flags |= self.bitmask[name]
+        return flags
+
+    @classmethod
+    def emit_macros(cls, out: Formatter) -> None:
+        flags = cls.newEmpty()
+        for name, value in flags.bitmask.items():
+            out.emit(f"#define {name} ({value})")
+
+        for name, value in flags.bitmask.items():
+            out.emit(
+                f"#define OPCODE_{name[:-len('_FLAG')]}(OP) "
+                f"(_PyOpcode_opcode_metadata[OP].flags & ({name}))"
+            )
+
+
+def variable_used(node: parsing.Node, name: str) -> bool:
+    """Determine whether a variable with a given name is used in a node."""
+    return any(
+        token.kind == "IDENTIFIER" and token.text == name for token in node.tokens
+    )
+
+
+def variable_used_unspecialized(node: parsing.Node, name: str) -> bool:
+    """Like variable_used(), but skips #if ENABLE_SPECIALIZATION blocks."""
+    tokens: list[lx.Token] = []
+    skipping = False
+    for i, token in enumerate(node.tokens):
+        if token.kind == "CMACRO":
+            text = "".join(token.text.split())
+            # TODO: Handle nested #if
+            if text == "#if":
+                if i + 1 < len(node.tokens) and node.tokens[i + 1].text in (
+                    "ENABLE_SPECIALIZATION",
+                    "TIER_ONE",
+                ):
+                    skipping = True
+            elif text in ("#else", "#endif"):
+                skipping = False
+        if not skipping:
+            tokens.append(token)
+    return any(token.kind == "IDENTIFIER" and token.text == name for token in tokens)
diff --git a/Tools/cases_generator/formatting.py b/Tools/cases_generator/formatting.py
new file mode 100644
index 00000000000000..4fd9172d20c274
--- /dev/null
+++ b/Tools/cases_generator/formatting.py
@@ -0,0 +1,206 @@
+import contextlib
+import re
+import typing
+from collections.abc import Iterator
+
+from parsing import StackEffect, Family
+
+UNUSED = "unused"
+
+
+class Formatter:
+    """Wraps an output stream with the ability to indent etc."""
+
+    stream: typing.TextIO
+    prefix: str
+    emit_line_directives: bool = False
+    lineno: int  # Next line number, 1-based
+    filename: str  # Slightly improved stream.filename
+    nominal_lineno: int
+    nominal_filename: str
+
+    def __init__(
+        self,
+        stream: typing.TextIO,
+        indent: int,
+        emit_line_directives: bool = False,
+        comment: str = "//",
+    ) -> None:
+        self.stream = stream
+        self.prefix = " " * indent
+        self.emit_line_directives = emit_line_directives
+        self.comment = comment
+        self.lineno = 1
+        self.filename = prettify_filename(self.stream.name)
+        self.nominal_lineno = 1
+        self.nominal_filename = self.filename
+
+    def write_raw(self, s: str) -> None:
+        self.stream.write(s)
+        newlines = s.count("\n")
+        self.lineno += newlines
+        self.nominal_lineno += newlines
+
+    def emit(self, arg: str) -> None:
+        if arg:
+            self.write_raw(f"{self.prefix}{arg}\n")
+        else:
+            self.write_raw("\n")
+
+    def set_lineno(self, lineno: int, filename: str) -> None:
+        if self.emit_line_directives:
+            if lineno != self.nominal_lineno or filename != self.nominal_filename:
+                self.emit(f'#line {lineno} "{filename}"')
+                self.nominal_lineno = lineno
+                self.nominal_filename = filename
+
+    def reset_lineno(self) -> None:
+        if self.lineno != self.nominal_lineno or self.filename != self.nominal_filename:
+            self.set_lineno(self.lineno + 1, self.filename)
+
+    @contextlib.contextmanager
+    def indent(self) -> Iterator[None]:
+        self.prefix += "    "
+        yield
+        self.prefix = self.prefix[:-4]
+
+    @contextlib.contextmanager
+    def block(self, head: str, tail: str = "") -> Iterator[None]:
+        if head:
+            self.emit(head + " {")
+        else:
+            self.emit("{")
+        with self.indent():
+            yield
+        self.emit("}" + tail)
+
+    def stack_adjust(
+        self,
+        input_effects: list[StackEffect],
+        output_effects: list[StackEffect],
+    ) -> None:
+        shrink, isym = list_effect_size(input_effects)
+        grow, osym = list_effect_size(output_effects)
+        diff = grow - shrink
+        if isym and isym != osym:
+            self.emit(f"STACK_SHRINK({isym});")
+        if diff < 0:
+            self.emit(f"STACK_SHRINK({-diff});")
+        if diff > 0:
+            self.emit(f"STACK_GROW({diff});")
+        if osym and osym != isym:
+            self.emit(f"STACK_GROW({osym});")
+
+    def declare(self, dst: StackEffect, src: StackEffect | None) -> None:
+        if dst.name == UNUSED or dst.cond == "0":
+            return
+        typ = f"{dst.type}" if dst.type else "PyObject *"
+        if src:
+            cast = self.cast(dst, src)
+            initexpr = f"{cast}{src.name}"
+            if src.cond and src.cond != "1":
+                initexpr = f"{parenthesize_cond(src.cond)} ? {initexpr} : NULL"
+            init = f" = {initexpr}"
+        elif dst.cond and dst.cond != "1":
+            init = " = NULL"
+        else:
+            init = ""
+        sepa = "" if typ.endswith("*") else " "
+        self.emit(f"{typ}{sepa}{dst.name}{init};")
+
+    def assign(self, dst: StackEffect, src: StackEffect) -> None:
+        if src.name == UNUSED or dst.name == UNUSED:
+            return
+        cast = self.cast(dst, src)
+        if re.match(r"^REG\(oparg(\d+)\)$", dst.name):
+            self.emit(f"Py_XSETREF({dst.name}, {cast}{src.name});")
+        else:
+            stmt = f"{dst.name} = {cast}{src.name};"
+            if src.cond and src.cond != "1":
+                if src.cond == "0":
+                    # It will not be executed
+                    return
+                stmt = f"if ({src.cond}) {{ {stmt} }}"
+            self.emit(stmt)
+
+    def cast(self, dst: StackEffect, src: StackEffect) -> str:
+        return f"({dst.type or 'PyObject *'})" if src.type != dst.type else ""
+
+    def static_assert_family_size(
+        self, name: str, family: Family | None, cache_offset: int
+    ) -> None:
+        """Emit a static_assert for the size of a family, if known.
+
+        This will fail at compile time if the cache size computed from
+        the instruction definition does not match the size of the struct
+        used by specialize.c.
+        """
+        if family and name == family.name:
+            cache_size = family.size
+            if cache_size:
+                self.emit(
+                    f"static_assert({cache_size} == {cache_offset}, "
+                    f'"incorrect cache size");'
+                )
+
+
+def prettify_filename(filename: str) -> str:
+    # Make filename more user-friendly and less platform-specific,
+    # it is only used for error reporting at this point.
+    filename = filename.replace("\\", "/")
+    if filename.startswith("./"):
+        filename = filename[2:]
+    if filename.endswith(".new"):
+        filename = filename[:-4]
+    return filename
+
+
+def list_effect_size(effects: list[StackEffect]) -> tuple[int, str]:
+    numeric = 0
+    symbolic: list[str] = []
+    for effect in effects:
+        diff, sym = effect_size(effect)
+        numeric += diff
+        if sym:
+            symbolic.append(maybe_parenthesize(sym))
+    return numeric, " + ".join(symbolic)
+
+
+def effect_size(effect: StackEffect) -> tuple[int, str]:
+    """Return the 'size' impact of a stack effect.
+
+    Returns a tuple (numeric, symbolic) where:
+
+    - numeric is an int giving the statically analyzable size of the effect
+    - symbolic is a string representing a variable effect (e.g. 'oparg*2')
+
+    At most one of these will be non-zero / non-empty.
+    """
+    if effect.size:
+        assert not effect.cond, "Array effects cannot have a condition"
+        return 0, effect.size
+    elif effect.cond:
+        if effect.cond in ("0", "1"):
+            return int(effect.cond), ""
+        return 0, f"{maybe_parenthesize(effect.cond)} ? 1 : 0"
+    else:
+        return 1, ""
+
+
+def maybe_parenthesize(sym: str) -> str:
+    """Add parentheses around a string if it contains an operator.
+
+    An exception is made for '*' which is common and harmless
+    in the context where the symbolic size is used.
+    """
+    if re.match(r"^[\s\w*]+$", sym):
+        return sym
+    else:
+        return f"({sym})"
+
+
+def parenthesize_cond(cond: str) -> str:
+    """Parenthesize a condition, but only if it contains ?: itself."""
+    if "?" in cond:
+        cond = f"({cond})"
+    return cond
diff --git a/Tools/cases_generator/generate_cases.py b/Tools/cases_generator/generate_cases.py
index 62ddeac0265ad8..d0fdc4a0aeb7b0 100644
--- a/Tools/cases_generator/generate_cases.py
+++ b/Tools/cases_generator/generate_cases.py
@@ -1,21 +1,37 @@
 """Generate the main interpreter switch.
-
 Reads the instruction definitions from bytecodes.c.
 Writes the cases to generated_cases.c.h, which is #included in ceval.c.
 """
 
 import argparse
 import contextlib
-import dataclasses
+import itertools
 import os
 import posixpath
-import re
 import sys
+import textwrap
 import typing
+from collections.abc import Iterator
+
+import stacking  # Early import to avoid circular import
+from _typing_backports import assert_never
+from analysis import Analyzer
+from formatting import Formatter, list_effect_size
+from flags import InstructionFlags, variable_used
+from instructions import (
+    AnyInstruction,
+    AbstractInstruction,
+    Component,
+    Instruction,
+    MacroInstruction,
+    MacroParts,
+    PseudoInstruction,
+    TIER_ONE,
+    TIER_TWO,
+)
+import parsing
+from parsing import StackEffect
 
-import lexer as lx
-import parser
-from parser import StackEffect
 
 HERE = os.path.dirname(__file__)
 ROOT = os.path.join(HERE, "../..")
@@ -23,26 +39,88 @@
 
 DEFAULT_INPUT = os.path.relpath(os.path.join(ROOT, "Python/bytecodes.c"))
 DEFAULT_OUTPUT = os.path.relpath(os.path.join(ROOT, "Python/generated_cases.c.h"))
+DEFAULT_OPCODE_IDS_H_OUTPUT = os.path.relpath(
+    os.path.join(ROOT, "Include/opcode_ids.h")
+)
+DEFAULT_OPCODE_TARGETS_H_OUTPUT = os.path.relpath(
+    os.path.join(ROOT, "Python/opcode_targets.h")
+)
 DEFAULT_METADATA_OUTPUT = os.path.relpath(
-    os.path.join(ROOT, "Python/opcode_metadata.h")
+    os.path.join(ROOT, "Include/internal/pycore_opcode_metadata.h")
+)
+DEFAULT_PYMETADATA_OUTPUT = os.path.relpath(
+    os.path.join(ROOT, "Lib/_opcode_metadata.py")
 )
-BEGIN_MARKER = "// BEGIN BYTECODES //"
-END_MARKER = "// END BYTECODES //"
-RE_PREDICTED = (
-    r"^\s*(?:PREDICT\(|GO_TO_INSTRUCTION\(|DEOPT_IF\(.*?,\s*)(\w+)\);\s*(?://.*)?$"
+DEFAULT_EXECUTOR_OUTPUT = os.path.relpath(
+    os.path.join(ROOT, "Python/executor_cases.c.h")
 )
-UNUSED = "unused"
-BITS_PER_CODE_UNIT = 16
+DEFAULT_ABSTRACT_INTERPRETER_OUTPUT = os.path.relpath(
+    os.path.join(ROOT, "Python/abstract_interp_cases.c.h")
+)
+
+# Constants used instead of size for macro expansions.
+# Note: 1, 2, 4 must match actual cache entry sizes.
+OPARG_SIZES = {
+    "OPARG_FULL": 0,
+    "OPARG_CACHE_1": 1,
+    "OPARG_CACHE_2": 2,
+    "OPARG_CACHE_4": 4,
+    "OPARG_TOP": 5,
+    "OPARG_BOTTOM": 6,
+    "OPARG_SAVE_RETURN_OFFSET": 7,
+}
+
+INSTR_FMT_PREFIX = "INSTR_FMT_"
+
+# TODO: generate all these after updating the DSL
+SPECIALLY_HANDLED_ABSTRACT_INSTR = {
+    "LOAD_FAST",
+    "LOAD_FAST_CHECK",
+    "LOAD_FAST_AND_CLEAR",
+    "LOAD_CONST",
+    "STORE_FAST",
+    "STORE_FAST_MAYBE_NULL",
+    "COPY",
+    # Arithmetic
+    "_BINARY_OP_MULTIPLY_INT",
+    "_BINARY_OP_ADD_INT",
+    "_BINARY_OP_SUBTRACT_INT",
+}
 
 arg_parser = argparse.ArgumentParser(
     description="Generate the code for the interpreter switch.",
     formatter_class=argparse.ArgumentDefaultsHelpFormatter,
 )
+
+arg_parser.add_argument(
+    "-v",
+    "--viable",
+    help="Print list of non-viable uops and exit",
+    action="store_true",
+)
 arg_parser.add_argument(
     "-o", "--output", type=str, help="Generated code", default=DEFAULT_OUTPUT
 )
 arg_parser.add_argument(
-    "-m", "--metadata", type=str, help="Generated metadata", default=DEFAULT_METADATA_OUTPUT
+    "-t",
+    "--opcode_targets_h",
+    type=str,
+    help="File with opcode targets for computed gotos",
+    default=DEFAULT_OPCODE_TARGETS_H_OUTPUT,
+)
+arg_parser.add_argument(
+    "-m",
+    "--metadata",
+    type=str,
+    help="Generated C metadata",
+    default=DEFAULT_METADATA_OUTPUT,
+)
+arg_parser.add_argument(
+    "-p",
+    "--pymetadata",
+    type=str,
+    help="Generated Python metadata",
+    default=DEFAULT_PYMETADATA_OUTPUT,
 )
 arg_parser.add_argument(
     "-l", "--emit-line-directives", help="Emit #line directives", action="store_true"
@@ -50,1209 +128,728 @@
 arg_parser.add_argument(
     "input", nargs=argparse.REMAINDER, help="Instruction definition file(s)"
 )
+arg_parser.add_argument(
+    "-e",
+    "--executor-cases",
+    type=str,
+    help="Write executor cases to this file",
+    default=DEFAULT_EXECUTOR_OUTPUT,
+)
+arg_parser.add_argument(
+    "-a",
+    "--abstract-interpreter-cases",
+    type=str,
+    help="Write abstract interpreter cases to this file",
+    default=DEFAULT_ABSTRACT_INTERPRETER_OUTPUT,
+)
 
 
-def effect_size(effect: StackEffect) -> tuple[int, str]:
-    """Return the 'size' impact of a stack effect.
-
-    Returns a tuple (numeric, symbolic) where:
-
-    - numeric is an int giving the statically analyzable size of the effect
-    - symbolic is a string representing a variable effect (e.g. 'oparg*2')
-
-    At most one of these will be non-zero / non-empty.
-    """
-    if effect.size:
-        assert not effect.cond, "Array effects cannot have a condition"
-        return 0, effect.size
-    elif effect.cond:
-        return 0, f"{maybe_parenthesize(effect.cond)} ? 1 : 0"
-    else:
-        return 1, ""
-
-
-def maybe_parenthesize(sym: str) -> str:
-    """Add parentheses around a string if it contains an operator.
-
-    An exception is made for '*' which is common and harmless
-    in the context where the symbolic size is used.
-    """
-    if re.match(r"^[\s\w*]+$", sym):
-        return sym
-    else:
-        return f"({sym})"
-
-
-def list_effect_size(effects: list[StackEffect]) -> tuple[int, str]:
-    numeric = 0
-    symbolic: list[str] = []
-    for effect in effects:
-        diff, sym = effect_size(effect)
-        numeric += diff
-        if sym:
-            symbolic.append(maybe_parenthesize(sym))
-    return numeric, " + ".join(symbolic)
-
-
-def string_effect_size(arg: tuple[int, str]) -> str:
-    numeric, symbolic = arg
-    if numeric and symbolic:
-        return f"{numeric} + {symbolic}"
-    elif symbolic:
-        return symbolic
-    else:
-        return str(numeric)
-
-
-class Formatter:
-    """Wraps an output stream with the ability to indent etc."""
-
-    stream: typing.TextIO
-    prefix: str
-    emit_line_directives: bool = False
-    lineno: int  # Next line number, 1-based
-    filename: str  # Slightly improved stream.filename
-    nominal_lineno: int
-    nominal_filename: str
-
-    def __init__(
-            self, stream: typing.TextIO, indent: int, emit_line_directives: bool = False
-    ) -> None:
-        self.stream = stream
-        self.prefix = " " * indent
-        self.emit_line_directives = emit_line_directives
-        self.lineno = 1
-        filename = os.path.relpath(self.stream.name, ROOT)
-        # Make filename more user-friendly and less platform-specific
-        filename = filename.replace("\\", "/")
-        if filename.startswith("./"):
-            filename = filename[2:]
-        if filename.endswith(".new"):
-            filename = filename[:-4]
-        self.filename = filename
-        self.nominal_lineno = 1
-        self.nominal_filename = filename
-
-    def write_raw(self, s: str) -> None:
-        self.stream.write(s)
-        newlines = s.count("\n")
-        self.lineno += newlines
-        self.nominal_lineno += newlines
-
-    def emit(self, arg: str) -> None:
-        if arg:
-            self.write_raw(f"{self.prefix}{arg}\n")
-        else:
-            self.write_raw("\n")
-
-    def set_lineno(self, lineno: int, filename: str) -> None:
-        if self.emit_line_directives:
-            if lineno != self.nominal_lineno or filename != self.nominal_filename:
-                self.emit(f'#line {lineno} "{filename}"')
-                self.nominal_lineno = lineno
-                self.nominal_filename = filename
-
-    def reset_lineno(self) -> None:
-        if self.lineno != self.nominal_lineno or self.filename != self.nominal_filename:
-            self.set_lineno(self.lineno + 1, self.filename)
+class Generator(Analyzer):
+    def get_stack_effect_info(
+        self, thing: parsing.InstDef | parsing.Macro | parsing.Pseudo
+    ) -> tuple[AnyInstruction | None, str, str]:
+        def effect_str(effects: list[StackEffect]) -> str:
+            n_effect, sym_effect = list_effect_size(effects)
+            if sym_effect:
+                return f"{sym_effect} + {n_effect}" if n_effect else sym_effect
+            return str(n_effect)
 
-    @contextlib.contextmanager
-    def indent(self):
-        self.prefix += "    "
-        yield
-        self.prefix = self.prefix[:-4]
+        instr: AnyInstruction | None
+        popped: str | None = None
+        pushed: str | None = None
+        match thing:
+            case parsing.InstDef():
+                instr = self.instrs[thing.name]
+                popped = effect_str(instr.input_effects)
+                pushed = effect_str(instr.output_effects)
+            case parsing.Macro():
+                instr = self.macro_instrs[thing.name]
+                popped, pushed = stacking.get_stack_effect_info_for_macro(instr)
+            case parsing.Pseudo():
+                instr = self.pseudo_instrs[thing.name]
+                # Calculate stack effect, and check that it's the same
+                # for all targets.
+                for target in self.pseudos[thing.name].targets:
+                    target_instr = self.instrs.get(target)
+                    if target_instr is None:
+                        macro_instr = self.macro_instrs[target]
+                        popped, pushed = stacking.get_stack_effect_info_for_macro(macro_instr)
+                    else:
+                        target_popped = effect_str(target_instr.input_effects)
+                        target_pushed = effect_str(target_instr.output_effects)
+                        if popped is None:
+                            popped, pushed = target_popped, target_pushed
+                        else:
+                            assert popped == target_popped
+                            assert pushed == target_pushed
+            case _:
+                assert_never(thing)
+        assert popped is not None and pushed is not None
+        return instr, popped, pushed
 
     @contextlib.contextmanager
-    def block(self, head: str):
-        if head:
-            self.emit(head + " {")
-        else:
-            self.emit("{")
-        with self.indent():
+    def metadata_item(self, signature: str, open: str, close: str) -> Iterator[None]:
+        self.out.emit("")
+        self.out.emit(f"extern {signature};")
+        self.out.emit("#ifdef NEED_OPCODE_METADATA")
+        with self.out.block(f"{signature} {open}", close):
             yield
-        self.emit("}")
+        self.out.emit("#endif // NEED_OPCODE_METADATA")
 
-    def stack_adjust(
-        self,
-        diff: int,
-        input_effects: list[StackEffect],
-        output_effects: list[StackEffect],
-    ):
-        # TODO: Get rid of 'diff' parameter
-        shrink, isym = list_effect_size(input_effects)
-        grow, osym = list_effect_size(output_effects)
-        diff += grow - shrink
-        if isym and isym != osym:
-            self.emit(f"STACK_SHRINK({isym});")
-        if diff < 0:
-            self.emit(f"STACK_SHRINK({-diff});")
-        if diff > 0:
-            self.emit(f"STACK_GROW({diff});")
-        if osym and osym != isym:
-            self.emit(f"STACK_GROW({osym});")
-
-    def declare(self, dst: StackEffect, src: StackEffect | None):
-        if dst.name == UNUSED:
-            return
-        typ = f"{dst.type}" if dst.type else "PyObject *"
-        if src:
-            cast = self.cast(dst, src)
-            init = f" = {cast}{src.name}"
-        elif dst.cond:
-            init = " = NULL"
-        else:
-            init = ""
-        sepa = "" if typ.endswith("*") else " "
-        self.emit(f"{typ}{sepa}{dst.name}{init};")
-
-    def assign(self, dst: StackEffect, src: StackEffect):
-        if src.name == UNUSED:
-            return
-        if src.size:
-            # Don't write sized arrays -- it's up to the user code.
-            return
-        cast = self.cast(dst, src)
-        if re.match(r"^REG\(oparg(\d+)\)$", dst.name):
-            self.emit(f"Py_XSETREF({dst.name}, {cast}{src.name});")
-        else:
-            stmt = f"{dst.name} = {cast}{src.name};"
-            if src.cond:
-                stmt = f"if ({src.cond}) {{ {stmt} }}"
-            self.emit(stmt)
-
-    def cast(self, dst: StackEffect, src: StackEffect) -> str:
-        return f"({dst.type or 'PyObject *'})" if src.type != dst.type else ""
-
-
-@dataclasses.dataclass
-class Instruction:
-    """An instruction with additional data and code."""
-
-    # Parts of the underlying instruction definition
-    inst: parser.InstDef
-    kind: typing.Literal["inst", "op", "legacy"]  # Legacy means no (input -- output)
-    name: str
-    block: parser.Block
-    block_text: list[str]  # Block.text, less curlies, less PREDICT() calls
-    predictions: list[str]  # Prediction targets (instruction names)
-    block_line: int  # First line of block in original code
-
-    # Computed by constructor
-    always_exits: bool
-    cache_offset: int
-    cache_effects: list[parser.CacheEffect]
-    input_effects: list[StackEffect]
-    output_effects: list[StackEffect]
-    unmoved_names: frozenset[str]
-    instr_fmt: str
-
-    # Set later
-    family: parser.Family | None = None
-    predicted: bool = False
-
-    def __init__(self, inst: parser.InstDef):
-        self.inst = inst
-        self.kind = inst.kind
-        self.name = inst.name
-        self.block = inst.block
-        self.block_text, self.check_eval_breaker, self.predictions, self.block_line = \
-            extract_block_text(self.block)
-        self.always_exits = always_exits(self.block_text)
-        self.cache_effects = [
-            effect for effect in inst.inputs if isinstance(effect, parser.CacheEffect)
-        ]
-        self.cache_offset = sum(c.size for c in self.cache_effects)
-        self.input_effects = [
-            effect for effect in inst.inputs if isinstance(effect, StackEffect)
-        ]
-        self.output_effects = inst.outputs  # For consistency/completeness
-        unmoved_names: set[str] = set()
-        for ieffect, oeffect in zip(self.input_effects, self.output_effects):
-            if ieffect.name == oeffect.name:
-                unmoved_names.add(ieffect.name)
-            else:
-                break
-        self.unmoved_names = frozenset(unmoved_names)
-        if variable_used(inst, "oparg"):
-            fmt = "IB"
-        else:
-            fmt = "IX"
-        cache = "C"
-        for ce in self.cache_effects:
-            for _ in range(ce.size):
-                fmt += cache
-                cache = "0"
-        self.instr_fmt = fmt
-
-    def write(self, out: Formatter) -> None:
-        """Write one instruction, sans prologue and epilogue."""
-        # Write a static assertion that a family's cache size is correct
-        if family := self.family:
-            if self.name == family.members[0]:
-                if cache_size := family.size:
-                    out.emit(
-                        f"static_assert({cache_size} == "
-                        f'{self.cache_offset}, "incorrect cache size");'
-                    )
-
-        # Write input stack effect variable declarations and initializations
-        ieffects = list(reversed(self.input_effects))
-        for i, ieffect in enumerate(ieffects):
-            isize = string_effect_size(
-                list_effect_size([ieff for ieff in ieffects[: i + 1]])
-            )
-            if ieffect.size:
-                src = StackEffect(f"(stack_pointer - {maybe_parenthesize(isize)})", "PyObject **")
-            elif ieffect.cond:
-                src = StackEffect(f"({ieffect.cond}) ? stack_pointer[-{maybe_parenthesize(isize)}] : NULL", "")
-            else:
-                src = StackEffect(f"stack_pointer[-{maybe_parenthesize(isize)}]", "")
-            out.declare(ieffect, src)
-
-        # Write output stack effect variable declarations
-        isize = string_effect_size(list_effect_size(self.input_effects))
-        input_names = {ieffect.name for ieffect in self.input_effects}
-        for i, oeffect in enumerate(self.output_effects):
-            if oeffect.name not in input_names:
-                if oeffect.size:
-                    osize = string_effect_size(
-                        list_effect_size([oeff for oeff in self.output_effects[:i]])
-                    )
-                    offset = "stack_pointer"
-                    if isize != osize:
-                        if isize != "0":
-                            offset += f" - ({isize})"
-                        if osize != "0":
-                            offset += f" + {osize}"
-                    src = StackEffect(offset, "PyObject **")
-                    out.declare(oeffect, src)
-                else:
-                    out.declare(oeffect, None)
-
-        # out.emit(f"next_instr += OPSIZE({self.inst.name}) - 1;")
-
-        self.write_body(out, 0)
+    def write_stack_effect_functions(self) -> None:
+        popped_data: list[tuple[AnyInstruction, str]] = []
+        pushed_data: list[tuple[AnyInstruction, str]] = []
+        for thing in self.everything:
+            if isinstance(thing, parsing.Macro) and thing.name in self.instrs:
+                continue
+            instr, popped, pushed = self.get_stack_effect_info(thing)
+            if instr is not None:
+                popped_data.append((instr, popped))
+                pushed_data.append((instr, pushed))
 
-        # Skip the rest if the block always exits
-        if self.always_exits:
-            return
+        def write_function(
+            direction: str, data: list[tuple[AnyInstruction, str]]
+        ) -> None:
+            with self.metadata_item(
+                f"int _PyOpcode_num_{direction}(int opcode, int oparg, bool jump)",
+                "",
+                "",
+            ):
+                with self.out.block("switch(opcode)"):
+                    for instr, effect in data:
+                        self.out.emit(f"case {instr.name}:")
+                        self.out.emit(f"    return {effect};")
+                    self.out.emit("default:")
+                    self.out.emit("    return -1;")
 
-        # Write net stack growth/shrinkage
-        out.stack_adjust(
-            0,
-            [ieff for ieff in self.input_effects],
-            [oeff for oeff in self.output_effects],
-        )
+        write_function("popped", popped_data)
+        write_function("pushed", pushed_data)
+        self.out.emit("")
 
-        # Write output stack effect assignments
-        oeffects = list(reversed(self.output_effects))
-        for i, oeffect in enumerate(oeffects):
-            if oeffect.name in self.unmoved_names:
+    def from_source_files(self) -> str:
+        filenames = []
+        for filename in self.input_filenames:
+            try:
+                filename = os.path.relpath(filename, ROOT)
+            except ValueError:
+                # May happen on Windows if root and temp on different volumes
+                pass
+            filenames.append(filename.replace(os.path.sep, posixpath.sep))
+        paths = f"\n{self.out.comment}   ".join(filenames)
+        return f"{self.out.comment} from:\n{self.out.comment}   {paths}\n"
+
+    def write_provenance_header(self) -> None:
+        self.out.write_raw(f"{self.out.comment} This file is generated by {THIS}\n")
+        self.out.write_raw(self.from_source_files())
+        self.out.write_raw(f"{self.out.comment} Do not edit!\n")
+
+    def assign_opcode_ids(self) -> None:
+        """Assign IDs to opcodes"""
+
+        ops: list[tuple[bool, str]] = []  # (has_arg, name) for each opcode
+        instrumented_ops: list[str] = []
+
+        specialized_ops: set[str] = set()
+        for name, family in self.families.items():
+            specialized_ops.update(family.members)
+
+        for instr in self.macro_instrs.values():
+            name = instr.name
+            if name in specialized_ops:
                 continue
-            osize = string_effect_size(
-                list_effect_size([oeff for oeff in oeffects[: i + 1]])
-            )
-            if oeffect.size:
-                dst = StackEffect(f"stack_pointer - {maybe_parenthesize(osize)}", "PyObject **")
-            else:
-                dst = StackEffect(f"stack_pointer[-{maybe_parenthesize(osize)}]", "")
-            out.assign(dst, oeffect)
-
-        # Write cache effect
-        if self.cache_offset:
-            out.emit(f"next_instr += {self.cache_offset};")
-
-    def write_body(self, out: Formatter, dedent: int, cache_adjust: int = 0) -> None:
-        """Write the instruction body."""
-        # Write cache effect variable declarations and initializations
-        cache_offset = cache_adjust
-        for ceffect in self.cache_effects:
-            if ceffect.name != UNUSED:
-                bits = ceffect.size * BITS_PER_CODE_UNIT
-                if bits == 64:
-                    # NOTE: We assume that 64-bit data in the cache
-                    # is always an object pointer.
-                    # If this becomes false, we need a way to specify
-                    # syntactically what type the cache data is.
-                    typ = "PyObject *"
-                    func = "read_obj"
-                else:
-                    typ = f"uint{bits}_t "
-                    func = f"read_u{bits}"
-                out.emit(
-                    f"{typ}{ceffect.name} = {func}(&next_instr[{cache_offset}].cache);"
-                )
-            cache_offset += ceffect.size
-        assert cache_offset == self.cache_offset + cache_adjust
-
-        # Write the body, substituting a goto for ERROR_IF() and other stuff
-        assert dedent <= 0
-        extra = " " * -dedent
-        names_to_skip = self.unmoved_names | frozenset({UNUSED, "null"})
-        offset = 0
-        context = self.block.context
-        assert context != None
-        filename = context.owner.filename
-        for line in self.block_text:
-            out.set_lineno(self.block_line + offset, filename)
-            offset += 1
-            if m := re.match(r"(\s*)ERROR_IF\((.+), (\w+)\);\s*(?://.*)?$", line):
-                space, cond, label = m.groups()
-                space = extra + space
-                # ERROR_IF() must pop the inputs from the stack.
-                # The code block is responsible for DECREF()ing them.
-                # NOTE: If the label doesn't exist, just add it to ceval.c.
-
-                # Don't pop common input/output effects at the bottom!
-                # These aren't DECREF'ed so they can stay.
-                ieffs = list(self.input_effects)
-                oeffs = list(self.output_effects)
-                while ieffs and oeffs and ieffs[0] == oeffs[0]:
-                    ieffs.pop(0)
-                    oeffs.pop(0)
-                ninputs, symbolic = list_effect_size(ieffs)
-                if ninputs:
-                    label = f"pop_{ninputs}_{label}"
-                if symbolic:
-                    out.write_raw(
-                        f"{space}if ({cond}) {{ STACK_SHRINK({symbolic}); goto {label}; }}\n"
-                    )
-                else:
-                    out.write_raw(f"{space}if ({cond}) goto {label};\n")
-            elif m := re.match(r"(\s*)DECREF_INPUTS\(\);\s*(?://.*)?$", line):
-                out.reset_lineno()
-                space = extra + m.group(1)
-                for ieff in self.input_effects:
-                    if ieff.name in names_to_skip:
-                        continue
-                    if ieff.size:
-                        out.write_raw(
-                            f"{space}for (int _i = {ieff.size}; --_i >= 0;) {{\n"
-                        )
-                        out.write_raw(f"{space}    Py_DECREF({ieff.name}[_i]);\n")
-                        out.write_raw(f"{space}}}\n")
-                    else:
-                        decref = "XDECREF" if ieff.cond else "DECREF"
-                        out.write_raw(f"{space}Py_{decref}({ieff.name});\n")
+            if name.startswith("INSTRUMENTED_"):
+                instrumented_ops.append(name)
             else:
-                out.write_raw(extra + line)
-        out.reset_lineno()
-
-
-InstructionOrCacheEffect = Instruction | parser.CacheEffect
-StackEffectMapping = list[tuple[StackEffect, StackEffect]]
-
-
-@dataclasses.dataclass
-class Component:
-    instr: Instruction
-    input_mapping: StackEffectMapping
-    output_mapping: StackEffectMapping
+                ops.append((instr.instr_flags.HAS_ARG_FLAG, name))
 
-    def write_body(self, out: Formatter, cache_adjust: int) -> None:
-        with out.block(""):
-            input_names = {ieffect.name for _, ieffect in self.input_mapping}
-            for var, ieffect in self.input_mapping:
-                out.declare(ieffect, var)
-            for _, oeffect in self.output_mapping:
-                if oeffect.name not in input_names:
-                    out.declare(oeffect, None)
+        # Special case: this instruction is implemented in ceval.c
+        # rather than bytecodes.c, so we need to add it explicitly
+        # here (at least until we add something to bytecodes.c to
+        # declare external instructions).
+        instrumented_ops.append("INSTRUMENTED_LINE")
 
-            self.instr.write_body(out, dedent=-4, cache_adjust=cache_adjust)
+        # assert lists are unique
+        assert len(set(ops)) == len(ops)
+        assert len(set(instrumented_ops)) == len(instrumented_ops)
 
-            for var, oeffect in self.output_mapping:
-                out.assign(var, oeffect)
+        opname: list[str | None] = [None] * 512
+        opmap: dict[str, int] = {}
+        markers: dict[str, int] = {}
 
+        def map_op(op: int, name: str) -> None:
+            assert op < len(opname)
+            assert opname[op] is None, (op, name)
+            assert name not in opmap
+            opname[op] = name
+            opmap[name] = op
 
-@dataclasses.dataclass
-class SuperOrMacroInstruction:
-    """Common fields for super- and macro instructions."""
+        # 0 is reserved for cache entries. This helps debugging.
+        map_op(0, "CACHE")
 
-    name: str
-    stack: list[StackEffect]
-    initial_sp: int
-    final_sp: int
-    instr_fmt: str
+        # 17 is reserved as it is the initial value for the specializing counter.
+        # This helps catch cases where we attempt to execute a cache.
+        map_op(17, "RESERVED")
 
+        # 149 is RESUME - it is hard coded as such in Tools/build/deepfreeze.py
+        map_op(149, "RESUME")
 
-@dataclasses.dataclass
-class SuperInstruction(SuperOrMacroInstruction):
-    """A super-instruction."""
+        # Specialized ops appear in their own section
+        # Instrumented opcodes are at the end of the valid range
+        min_internal = 150
+        min_instrumented = 254 - (len(instrumented_ops) - 1)
+        assert min_internal + len(specialized_ops) < min_instrumented
 
-    super: parser.Super
-    parts: list[Component]
+        next_opcode = 1
+        for has_arg, name in sorted(ops):
+            if name in opmap:
+                continue  # an anchored name, like CACHE
+            map_op(next_opcode, name)
+            if has_arg and "HAVE_ARGUMENT" not in markers:
+                markers["HAVE_ARGUMENT"] = next_opcode
 
+            while opname[next_opcode] is not None:
+                next_opcode += 1
 
-@dataclasses.dataclass
-class MacroInstruction(SuperOrMacroInstruction):
-    """A macro instruction."""
+        assert next_opcode < min_internal, next_opcode
 
-    macro: parser.Macro
-    parts: list[Component | parser.CacheEffect]
+        for i, op in enumerate(sorted(specialized_ops)):
+            map_op(min_internal + i, op)
 
+        markers["MIN_INSTRUMENTED_OPCODE"] = min_instrumented
+        for i, op in enumerate(instrumented_ops):
+            map_op(min_instrumented + i, op)
 
-@dataclasses.dataclass
-class OverriddenInstructionPlaceHolder:
-    name: str
+        # Pseudo opcodes are after the valid range
+        for i, op in enumerate(sorted(self.pseudos)):
+            map_op(256 + i, op)
 
+        assert 255 not in opmap.values()  # 255 is reserved
+        self.opmap = opmap
+        self.markers = markers
 
-AnyInstruction = Instruction | SuperInstruction | MacroInstruction
-INSTR_FMT_PREFIX = "INSTR_FMT_"
-
-
-class Analyzer:
-    """Parse input, analyze it, and write to output."""
-
-    input_filenames: list[str]
-    output_filename: str
-    metadata_filename: str
-    errors: int = 0
-    emit_line_directives: bool = False
-
-    def __init__(self, input_filenames: list[str], output_filename: str, metadata_filename: str):
-        """Read the input file."""
-        self.input_filenames = input_filenames
-        self.output_filename = output_filename
-        self.metadata_filename = metadata_filename
-
-    def error(self, msg: str, node: parser.Node) -> None:
-        lineno = 0
-        filename = "<unknown file>"
-        if context := node.context:
-            filename = context.owner.filename
-            # Use line number of first non-comment in the node
-            for token in context.owner.tokens[context.begin : context.end]:
-                lineno = token.line
-                if token.kind != "COMMENT":
-                    break
-        print(f"{filename}:{lineno}: {msg}", file=sys.stderr)
-        self.errors += 1
-
-    everything: list[
-        parser.InstDef | parser.Super | parser.Macro | OverriddenInstructionPlaceHolder
-    ]
-    instrs: dict[str, Instruction]  # Includes ops
-    supers: dict[str, parser.Super]
-    super_instrs: dict[str, SuperInstruction]
-    macros: dict[str, parser.Macro]
-    macro_instrs: dict[str, MacroInstruction]
-    families: dict[str, parser.Family]
-
-    def parse(self) -> None:
-        """Parse the source text.
-
-        We only want the parser to see the stuff between the
-        begin and end markers.
-        """
-
-        self.everything = []
-        self.instrs = {}
-        self.supers = {}
-        self.macros = {}
-        self.families = {}
+    def write_opcode_targets(self, opcode_targets_filename: str) -> None:
+        """Write header file that defines the jump target table"""
 
-        instrs_idx: dict[str, int] = dict()
+        with open(opcode_targets_filename, "w") as f:
+            # Create formatter
+            self.out = Formatter(f, 0)
 
-        for filename in self.input_filenames:
-            self.parse_file(filename, instrs_idx)
+            with self.out.block("static void *opcode_targets[256] =", ";"):
+                targets = ["_unknown_opcode"] * 256
+                for name, op in self.opmap.items():
+                    if op < 256:
+                        targets[op] = f"TARGET_{name}"
+                f.write(",\n".join([f"    &&{s}" for s in targets]))
 
-        files = " + ".join(self.input_filenames)
-        print(
-            f"Read {len(self.instrs)} instructions/ops, "
-            f"{len(self.supers)} supers, {len(self.macros)} macros, "
-            f"and {len(self.families)} families from {files}",
-            file=sys.stderr,
-        )
+    def write_metadata(self, metadata_filename: str, pymetadata_filename: str) -> None:
+        """Write instruction metadata to output file."""
 
-    def parse_file(self, filename: str, instrs_idx: dict[str, int]) -> None:
-        with open(filename) as file:
-            src = file.read()
-
-        filename = os.path.relpath(filename, ROOT)
-        # Make filename more user-friendly and less platform-specific
-        filename = filename.replace("\\", "/")
-        if filename.startswith("./"):
-            filename = filename[2:]
-        psr = parser.Parser(src, filename=filename)
-
-        # Skip until begin marker
-        while tkn := psr.next(raw=True):
-            if tkn.text == BEGIN_MARKER:
-                break
-        else:
-            raise psr.make_syntax_error(
-                f"Couldn't find {BEGIN_MARKER!r} in {psr.filename}"
-            )
-        start = psr.getpos()
-
-        # Find end marker, then delete everything after it
-        while tkn := psr.next(raw=True):
-            if tkn.text == END_MARKER:
-                break
-        del psr.tokens[psr.getpos() - 1 :]
-
-        # Parse from start
-        psr.setpos(start)
-        thing: parser.InstDef | parser.Super | parser.Macro | parser.Family | None
-        thing_first_token = psr.peek()
-        while thing := psr.definition():
+        # Compute the set of all instruction formats.
+        all_formats: set[str] = set()
+        for thing in self.everything:
+            format: str | None = None
             match thing:
-                case parser.InstDef(name=name):
-                    if name in self.instrs:
-                        if not thing.override:
-                            raise psr.make_syntax_error(
-                                f"Duplicate definition of '{name}' @ {thing.context} "
-                                f"previous definition @ {self.instrs[name].inst.context}",
-                                thing_first_token,
-                            )
-                        self.everything[instrs_idx[name]] = OverriddenInstructionPlaceHolder(name=name)
-                    if name not in self.instrs and thing.override:
-                        raise psr.make_syntax_error(
-                            f"Definition of '{name}' @ {thing.context} is supposed to be "
-                            "an override but no previous definition exists.",
-                            thing_first_token,
-                        )
-                    self.instrs[name] = Instruction(thing)
-                    instrs_idx[name] = len(self.everything)
-                    self.everything.append(thing)
-                case parser.Super(name):
-                    self.supers[name] = thing
-                    self.everything.append(thing)
-                case parser.Macro(name):
-                    self.macros[name] = thing
-                    self.everything.append(thing)
-                case parser.Family(name):
-                    self.families[name] = thing
+                case parsing.InstDef():
+                    format = self.instrs[thing.name].instr_fmt
+                case parsing.Macro():
+                    format = self.macro_instrs[thing.name].instr_fmt
+                case parsing.Pseudo():
+                    # Pseudo instructions exist only in the compiler,
+                    # so do not have a format
+                    continue
                 case _:
-                    typing.assert_never(thing)
-        if not psr.eof():
-            raise psr.make_syntax_error(f"Extra stuff at the end of {filename}")
+                    assert_never(thing)
+            assert format is not None
+            all_formats.add(format)
 
-    def analyze(self) -> None:
-        """Analyze the inputs.
+        # Turn it into a sorted list of enum values.
+        format_enums = [INSTR_FMT_PREFIX + format for format in sorted(all_formats)]
 
-        Raises SystemExit if there is an error.
-        """
-        self.find_predictions()
-        self.analyze_supers_and_macros()
-        self.map_families()
-        self.check_families()
+        with open(metadata_filename, "w") as f:
+            # Create formatter
+            self.out = Formatter(f, 0)
 
-    def find_predictions(self) -> None:
-        """Find the instructions that need PREDICTED() labels."""
-        for instr in self.instrs.values():
-            targets = set(instr.predictions)
-            for line in instr.block_text:
-                if m := re.match(RE_PREDICTED, line):
-                    targets.add(m.group(1))
-            for target in targets:
-                if target_instr := self.instrs.get(target):
-                    target_instr.predicted = True
-                else:
-                    self.error(
-                        f"Unknown instruction {target!r} predicted in {instr.name!r}",
-                        instr.inst,  # TODO: Use better location
-                    )
-
-    def map_families(self) -> None:
-        """Link instruction names back to their family, if they have one."""
-        for family in self.families.values():
-            for member in family.members:
-                if member_instr := self.instrs.get(member):
-                    if member_instr.family not in (family, None):
-                        self.error(
-                            f"Instruction {member} is a member of multiple families "
-                            f"({member_instr.family.name}, {family.name}).",
-                            family,
-                        )
-                    else:
-                        member_instr.family = family
-                elif member_macro := self.macro_instrs.get(member):
-                    for part in member_macro.parts:
-                        if isinstance(part, Component):
-                            if part.instr.family not in (family, None):
-                                self.error(
-                                    f"Component {part.instr.name} of macro {member} "
-                                    f"is a member of multiple families "
-                                    f"({part.instr.family.name}, {family.name}).",
-                                    family,
-                                )
-                            else:
-                                part.instr.family = family
-                else:
-                    self.error(
-                        f"Unknown instruction {member!r} referenced in family {family.name!r}",
-                        family,
-                    )
+            self.write_provenance_header()
 
-    def check_families(self) -> None:
-        """Check each family:
+            self.out.emit("")
+            self.out.emit("#ifndef Py_BUILD_CORE")
+            self.out.emit('#  error "this header requires Py_BUILD_CORE define"')
+            self.out.emit("#endif")
+            self.out.emit("")
+            self.out.emit("#include <stdbool.h>              // bool")
 
-        - Must have at least 2 members
-        - All members must be known instructions
-        - All members must have the same cache, input and output effects
-        """
-        for family in self.families.values():
-            if len(family.members) < 2:
-                self.error(f"Family {family.name!r} has insufficient members", family)
-            members = [
-                member
-                for member in family.members
-                if member in self.instrs or member in self.macro_instrs
-            ]
-            if members != family.members:
-                unknown = set(family.members) - set(members)
-                self.error(
-                    f"Family {family.name!r} has unknown members: {unknown}", family
-                )
-            if len(members) < 2:
-                continue
-            expected_effects = self.effect_counts(members[0])
-            for member in members[1:]:
-                member_effects = self.effect_counts(member)
-                if member_effects != expected_effects:
-                    self.error(
-                        f"Family {family.name!r} has inconsistent "
-                        f"(cache, input, output) effects:\n"
-                        f"  {family.members[0]} = {expected_effects}; "
-                        f"{member} = {member_effects}",
-                        family,
-                    )
-
-    def effect_counts(self, name: str) -> tuple[int, int, int]:
-        if instr := self.instrs.get(name):
-            cache = instr.cache_offset
-            input = len(instr.input_effects)
-            output = len(instr.output_effects)
-        elif macro := self.macro_instrs.get(name):
-            cache, input, output = 0, 0, 0
-            for part in macro.parts:
-                if isinstance(part, Component):
-                    cache += part.instr.cache_offset
-                    # A component may pop what the previous component pushed,
-                    # so we offset the input/output counts by that.
-                    delta_i = len(part.instr.input_effects)
-                    delta_o = len(part.instr.output_effects)
-                    offset = min(delta_i, output)
-                    input += delta_i - offset
-                    output += delta_o - offset
-                else:
-                    assert isinstance(part, parser.CacheEffect), part
-                    cache += part.size
-        else:
-            assert False, f"Unknown instruction {name!r}"
-        return cache, input, output
-
-    def analyze_supers_and_macros(self) -> None:
-        """Analyze each super- and macro instruction."""
-        self.super_instrs = {}
-        self.macro_instrs = {}
-        for name, super in self.supers.items():
-            self.super_instrs[name] = self.analyze_super(super)
-        for name, macro in self.macros.items():
-            self.macro_instrs[name] = self.analyze_macro(macro)
-
-    def analyze_super(self, super: parser.Super) -> SuperInstruction:
-        components = self.check_super_components(super)
-        stack, initial_sp = self.stack_analysis(components)
-        sp = initial_sp
-        parts: list[Component] = []
-        format = ""
-        for instr in components:
-            part, sp = self.analyze_instruction(instr, stack, sp)
-            parts.append(part)
-            format += instr.instr_fmt
-        final_sp = sp
-        return SuperInstruction(
-            super.name, stack, initial_sp, final_sp, format, super, parts
-        )
+            self.write_pseudo_instrs()
 
-    def analyze_macro(self, macro: parser.Macro) -> MacroInstruction:
-        components = self.check_macro_components(macro)
-        stack, initial_sp = self.stack_analysis(components)
-        sp = initial_sp
-        parts: list[Component | parser.CacheEffect] = []
-        format = "IB"
-        cache = "C"
-        for component in components:
-            match component:
-                case parser.CacheEffect() as ceffect:
-                    parts.append(ceffect)
-                    for _ in range(ceffect.size):
-                        format += cache
-                        cache = "0"
-                case Instruction() as instr:
-                    part, sp = self.analyze_instruction(instr, stack, sp)
-                    parts.append(part)
-                    for ce in instr.cache_effects:
-                        for _ in range(ce.size):
-                            format += cache
-                            cache = "0"
-                case _:
-                    typing.assert_never(component)
-        final_sp = sp
-        return MacroInstruction(
-            macro.name, stack, initial_sp, final_sp, format, macro, parts
-        )
+            self.out.emit("")
+            self.write_uop_items(lambda name, counter: f"#define {name} {counter}")
 
-    def analyze_instruction(
-        self, instr: Instruction, stack: list[StackEffect], sp: int
-    ) -> tuple[Component, int]:
-        input_mapping: StackEffectMapping = []
-        for ieffect in reversed(instr.input_effects):
-            sp -= 1
-            input_mapping.append((stack[sp], ieffect))
-        output_mapping: StackEffectMapping = []
-        for oeffect in instr.output_effects:
-            output_mapping.append((stack[sp], oeffect))
-            sp += 1
-        return Component(instr, input_mapping, output_mapping), sp
-
-    def check_super_components(self, super: parser.Super) -> list[Instruction]:
-        components: list[Instruction] = []
-        for op in super.ops:
-            if op.name not in self.instrs:
-                self.error(f"Unknown instruction {op.name!r}", super)
-            else:
-                components.append(self.instrs[op.name])
-        return components
-
-    def check_macro_components(
-        self, macro: parser.Macro
-    ) -> list[InstructionOrCacheEffect]:
-        components: list[InstructionOrCacheEffect] = []
-        for uop in macro.uops:
-            match uop:
-                case parser.OpName(name):
-                    if name not in self.instrs:
-                        self.error(f"Unknown instruction {name!r}", macro)
-                    components.append(self.instrs[name])
-                case parser.CacheEffect():
-                    components.append(uop)
-                case _:
-                    typing.assert_never(uop)
-        return components
+            self.write_stack_effect_functions()
 
-    def stack_analysis(
-        self, components: typing.Iterable[InstructionOrCacheEffect]
-    ) -> tuple[list[StackEffect], int]:
-        """Analyze a super-instruction or macro.
+            # Write the enum definition for instruction formats.
+            with self.out.block("enum InstructionFormat", ";"):
+                for enum in format_enums:
+                    self.out.emit(enum + ",")
 
-        Ignore cache effects.
+            self.out.emit("")
+            self.out.emit(
+                "#define IS_VALID_OPCODE(OP) \\\n"
+                "    (((OP) >= 0) && ((OP) < OPCODE_METADATA_SIZE) && \\\n"
+                "     (_PyOpcode_opcode_metadata[(OP)].valid_entry))"
+            )
 
-        Return the list of variable names and the initial stack pointer.
-        """
-        lowest = current = highest = 0
-        for thing in components:
-            match thing:
-                case Instruction() as instr:
-                    if any(
-                        eff.size for eff in instr.input_effects + instr.output_effects
-                    ):
-                        # TODO: Eventually this will be needed, at least for macros.
-                        self.error(
-                            f"Instruction {instr.name!r} has variable-sized stack effect, "
-                            "which are not supported in super- or macro instructions",
-                            instr.inst,  # TODO: Pass name+location of super/macro
-                        )
-                    current -= len(instr.input_effects)
-                    lowest = min(lowest, current)
-                    current += len(instr.output_effects)
-                    highest = max(highest, current)
-                case parser.CacheEffect():
-                    pass
-                case _:
-                    typing.assert_never(thing)
-        # At this point, 'current' is the net stack effect,
-        # and 'lowest' and 'highest' are the extremes.
-        # Note that 'lowest' may be negative.
-        # TODO: Reverse the numbering.
-        stack = [
-            StackEffect(f"_tmp_{i+1}", "") for i in reversed(range(highest - lowest))
-        ]
-        return stack, -lowest
+            self.out.emit("")
+            InstructionFlags.emit_macros(self.out)
 
-    def get_stack_effect_info(
-        self, thing: parser.InstDef | parser.Super | parser.Macro
-    ) -> tuple[AnyInstruction | None, str, str]:
-        def effect_str(effects: list[StackEffect]) -> str:
-            if getattr(thing, "kind", None) == "legacy":
-                return str(-1)
-            n_effect, sym_effect = list_effect_size(effects)
-            if sym_effect:
-                return f"{sym_effect} + {n_effect}" if n_effect else sym_effect
-            return str(n_effect)
+            self.out.emit("")
+            with self.out.block("struct opcode_metadata", ";"):
+                self.out.emit("bool valid_entry;")
+                self.out.emit("enum InstructionFormat instr_format;")
+                self.out.emit("int flags;")
+            self.out.emit("")
 
-        instr: AnyInstruction | None
-        match thing:
-            case parser.InstDef():
-                if thing.kind != "op":
-                    instr = self.instrs[thing.name]
-                    popped = effect_str(instr.input_effects)
-                    pushed = effect_str(instr.output_effects)
-                else:
-                    instr = None
-                    popped = ""
-                    pushed = ""
-            case parser.Super():
-                instr = self.super_instrs[thing.name]
-                popped = "+".join(
-                    effect_str(comp.instr.input_effects) for comp in instr.parts
-                )
-                pushed = "+".join(
-                    effect_str(comp.instr.output_effects) for comp in instr.parts
-                )
-            case parser.Macro():
-                instr = self.macro_instrs[thing.name]
-                parts = [comp for comp in instr.parts if isinstance(comp, Component)]
-                popped = "+".join(
-                    effect_str(comp.instr.input_effects) for comp in parts
-                )
-                pushed = "+".join(
-                    effect_str(comp.instr.output_effects) for comp in parts
+            with self.out.block("struct opcode_macro_expansion", ";"):
+                self.out.emit("int nuops;")
+                self.out.emit(
+                    "struct { int16_t uop; int8_t size; int8_t offset; } uops[12];"
                 )
-            case _:
-                typing.assert_never(thing)
-        return instr, popped, pushed
+            self.out.emit("")
 
-    def write_stack_effect_functions(self) -> None:
-        popped_data: list[tuple[AnyInstruction, str]] = []
-        pushed_data: list[tuple[AnyInstruction, str]] = []
-        for thing in self.everything:
-            if isinstance(thing, OverriddenInstructionPlaceHolder):
-                continue
-            instr, popped, pushed = self.get_stack_effect_info(thing)
-            if instr is not None:
-                popped_data.append((instr, popped))
-                pushed_data.append((instr, pushed))
+            for key, value in OPARG_SIZES.items():
+                self.out.emit(f"#define {key} {value}")
+            self.out.emit("")
 
-        def write_function(
-            direction: str, data: list[tuple[AnyInstruction, str]]
-        ) -> None:
+            self.out.emit(
+                "#define OPCODE_METADATA_FLAGS(OP) "
+                "(_PyOpcode_opcode_metadata[(OP)].flags & (HAS_ARG_FLAG | HAS_JUMP_FLAG))"
+            )
+            self.out.emit("#define SAME_OPCODE_METADATA(OP1, OP2) \\")
+            self.out.emit(
+                "        (OPCODE_METADATA_FLAGS(OP1) == OPCODE_METADATA_FLAGS(OP2))"
+            )
             self.out.emit("")
-            self.out.emit("#ifndef NEED_OPCODE_METADATA")
-            self.out.emit(f"extern int _PyOpcode_num_{direction}(int opcode, int oparg, bool jump);")
-            self.out.emit("#else")
-            self.out.emit("int")
-            self.out.emit(f"_PyOpcode_num_{direction}(int opcode, int oparg, bool jump) {{")
-            self.out.emit("    switch(opcode) {")
-            for instr, effect in data:
-                self.out.emit(f"        case {instr.name}:")
-                self.out.emit(f"            return {effect};")
-            self.out.emit("        default:")
-            self.out.emit("            return -1;")
-            self.out.emit("    }")
-            self.out.emit("}")
-            self.out.emit("#endif")
 
-        write_function("popped", popped_data)
-        write_function("pushed", pushed_data)
-        self.out.emit("")
+            # Write metadata array declaration
+            self.out.emit("#define OPCODE_METADATA_SIZE 512")
+            self.out.emit("#define OPCODE_UOP_NAME_SIZE 512")
+            self.out.emit("#define OPCODE_MACRO_EXPANSION_SIZE 256")
+
+            with self.metadata_item(
+                "const struct opcode_metadata "
+                "_PyOpcode_opcode_metadata[OPCODE_METADATA_SIZE]",
+                "=",
+                ";",
+            ):
+                # Write metadata for each instruction
+                for thing in self.everything:
+                    match thing:
+                        case parsing.InstDef():
+                            self.write_metadata_for_inst(self.instrs[thing.name])
+                        case parsing.Macro():
+                            if thing.name not in self.instrs:
+                                self.write_metadata_for_macro(
+                                    self.macro_instrs[thing.name]
+                                )
+                        case parsing.Pseudo():
+                            self.write_metadata_for_pseudo(
+                                self.pseudo_instrs[thing.name]
+                            )
+                        case _:
+                            assert_never(thing)
+
+            with self.metadata_item(
+                "const struct opcode_macro_expansion "
+                "_PyOpcode_macro_expansion[OPCODE_MACRO_EXPANSION_SIZE]",
+                "=",
+                ";",
+            ):
+                # Write macro expansion for each non-pseudo instruction
+                for mac in self.macro_instrs.values():
+                    if is_super_instruction(mac):
+                        # Special-case the heck out of super-instructions
+                        self.write_super_expansions(mac.name)
+                    else:
+                        self.write_macro_expansions(
+                            mac.name, mac.parts, mac.cache_offset
+                        )
 
-    def from_source_files(self) -> str:
-        paths = "\n//   ".join(
-            os.path.relpath(filename, ROOT).replace(os.path.sep, posixpath.sep)
-            for filename in self.input_filenames
-        )
-        return f"// from:\n//   {paths}\n"
+            with self.metadata_item(
+                "const char * const _PyOpcode_uop_name[OPCODE_UOP_NAME_SIZE]", "=", ";"
+            ):
+                self.write_uop_items(lambda name, counter: f'[{name}] = "{name}",')
 
-    def write_metadata(self) -> None:
-        """Write instruction metadata to output file."""
+            with self.metadata_item(
+                f"const char *const _PyOpcode_OpName[{1 + max(self.opmap.values())}]",
+                "=",
+                ";",
+            ):
+                for name in self.opmap:
+                    self.out.emit(f'[{name}] = "{name}",')
 
-        # Compute the set of all instruction formats.
-        all_formats: set[str] = set()
-        for thing in self.everything:
-            match thing:
-                case OverriddenInstructionPlaceHolder():
-                    continue
-                case parser.InstDef():
-                    format = self.instrs[thing.name].instr_fmt
-                case parser.Super():
-                    format = self.super_instrs[thing.name].instr_fmt
-                case parser.Macro():
-                    format = self.macro_instrs[thing.name].instr_fmt
-                case _:
-                    typing.assert_never(thing)
-            all_formats.add(format)
-        # Turn it into a list of enum definitions.
-        format_enums = [INSTR_FMT_PREFIX + format for format in sorted(all_formats)]
+            with self.metadata_item(
+                f"const uint8_t _PyOpcode_Caches[256]",
+                "=",
+                ";",
+            ):
+                family_member_names: set[str] = set()
+                for family in self.families.values():
+                    family_member_names.update(family.members)
+                for mac in self.macro_instrs.values():
+                    if (
+                        mac.cache_offset > 0
+                        and mac.name not in family_member_names
+                        and not mac.name.startswith("INSTRUMENTED_")
+                    ):
+                        self.out.emit(f"[{mac.name}] = {mac.cache_offset},")
+
+            deoptcodes = {}
+            for name, op in self.opmap.items():
+                if op < 256:
+                    deoptcodes[name] = name
+            for name, family in self.families.items():
+                for m in family.members:
+                    deoptcodes[m] = name
+            # special case:
+            deoptcodes["BINARY_OP_INPLACE_ADD_UNICODE"] = "BINARY_OP"
+
+            with self.metadata_item(f"const uint8_t _PyOpcode_Deopt[256]", "=", ";"):
+                for opt, deopt in sorted(deoptcodes.items()):
+                    self.out.emit(f"[{opt}] = {deopt},")
 
-        with open(self.metadata_filename, "w") as f:
+            self.out.emit("")
+            self.out.emit("#define EXTRA_CASES \\")
+            valid_opcodes = set(self.opmap.values())
+            with self.out.indent():
+                for op in range(256):
+                    if op not in valid_opcodes:
+                        self.out.emit(f"case {op}: \\")
+                self.out.emit("    ;\n")
+
+        with open(pymetadata_filename, "w") as f:
             # Create formatter
-            self.out = Formatter(f, 0)
+            self.out = Formatter(f, 0, comment="#")
 
-            # Write provenance header
-            self.out.write_raw(f"// This file is generated by {THIS}\n")
-            self.out.write_raw(self.from_source_files())
-            self.out.write_raw(f"// Do not edit!\n")
+            self.write_provenance_header()
 
+            # emit specializations
+            specialized_ops = set()
 
-            self.write_stack_effect_functions()
+            self.out.emit("")
+            self.out.emit("_specializations = {")
+            for name, family in self.families.items():
+                with self.out.indent():
+                    self.out.emit(f'"{family.name}": [')
+                    with self.out.indent():
+                        for m in family.members:
+                            self.out.emit(f'"{m}",')
+                        specialized_ops.update(family.members)
+                    self.out.emit(f"],")
+            self.out.emit("}")
 
-            # Write type definitions
-            self.out.emit(f"enum InstructionFormat {{ {', '.join(format_enums)} }};")
-            self.out.emit("struct opcode_metadata {")
-            with self.out.indent():
-                self.out.emit("bool valid_entry;")
-                self.out.emit("enum InstructionFormat instr_format;")
-            self.out.emit("};")
+            # Handle special case
             self.out.emit("")
+            self.out.emit("# An irregular case:")
+            self.out.emit(
+                '_specializations["BINARY_OP"].append('
+                '"BINARY_OP_INPLACE_ADD_UNICODE")'
+            )
+            specialized_ops.add("BINARY_OP_INPLACE_ADD_UNICODE")
 
-            # Write metadata array declaration
-            self.out.emit("#ifndef NEED_OPCODE_METADATA")
-            self.out.emit("extern const struct opcode_metadata _PyOpcode_opcode_metadata[256];")
-            self.out.emit("#else")
-            self.out.emit("const struct opcode_metadata _PyOpcode_opcode_metadata[256] = {")
+            ops = sorted((id, name) for (name, id) in self.opmap.items())
+            # emit specialized opmap
+            self.out.emit("")
+            with self.out.block("_specialized_opmap ="):
+                for op, name in ops:
+                    if name in specialized_ops:
+                        self.out.emit(f"'{name}': {op},")
 
-            # Write metadata for each instruction
-            for thing in self.everything:
-                match thing:
-                    case OverriddenInstructionPlaceHolder():
-                        continue
-                    case parser.InstDef():
-                        if thing.kind != "op":
-                            self.write_metadata_for_inst(self.instrs[thing.name])
-                    case parser.Super():
-                        self.write_metadata_for_super(self.super_instrs[thing.name])
-                    case parser.Macro():
-                        self.write_metadata_for_macro(self.macro_instrs[thing.name])
-                    case _:
-                        typing.assert_never(thing)
+            # emit opmap
+            self.out.emit("")
+            with self.out.block("opmap ="):
+                for op, name in ops:
+                    if name not in specialized_ops:
+                        self.out.emit(f"'{name}': {op},")
+
+            for name in ["MIN_INSTRUMENTED_OPCODE", "HAVE_ARGUMENT"]:
+                self.out.emit(f"{name} = {self.markers[name]}")
+
+    def write_pseudo_instrs(self) -> None:
+        """Write the IS_PSEUDO_INSTR macro"""
+        self.out.emit("\n\n#define IS_PSEUDO_INSTR(OP)  ( \\")
+        for op in self.pseudos:
+            self.out.emit(f"    ((OP) == {op}) || \\")
+        self.out.emit(f"    0)")
+
+    def write_uop_items(self, make_text: typing.Callable[[str, int], str]) -> None:
+        """Write '#define XXX NNN' for each uop"""
+        counter = 300  # TODO: Avoid collision with pseudo instructions
+        seen = set()
+
+        def add(name: str) -> None:
+            if name in seen:
+                return
+            nonlocal counter
+            self.out.emit(make_text(name, counter))
+            counter += 1
+            seen.add(name)
+
+        # These two are first by convention
+        add("_EXIT_TRACE")
+        add("_SET_IP")
 
-            # Write end of array
-            self.out.emit("};")
-            self.out.emit("#endif")
+        for instr in self.instrs.values():
+            # Skip ops that are also macros -- those are desugared inst()s
+            if instr.name not in self.macros:
+                add(instr.name)
 
-    def write_metadata_for_inst(self, instr: Instruction) -> None:
-        """Write metadata for a single instruction."""
+    def write_macro_expansions(
+        self, name: str, parts: MacroParts, cache_offset: int
+    ) -> None:
+        """Write the macro expansions for a macro-instruction."""
+        # TODO: Refactor to share code with write_cody(), is_viaible_uop(), etc.
+        offset = 0  # Cache effect offset
+        expansions: list[tuple[str, int, int]] = []  # [(name, size, offset), ...]
+        for part in parts:
+            if isinstance(part, Component):
+                # Skip specializations
+                if "specializing" in part.instr.annotations:
+                    continue
+                # All other component instructions must be viable uops
+                if not part.instr.is_viable_uop() and "replaced" not in part.instr.annotations:
+                    # This note just reminds us about macros that cannot
+                    # be expanded to Tier 2 uops. It is not an error.
+                    # Suppress it using 'replaced op(...)' for macros having
+                    # manual translation in translate_bytecode_to_trace()
+                    # in Python/optimizer.c.
+                    if len(parts) > 1 or part.instr.name != name:
+                        self.note(
+                            f"Part {part.instr.name} of {name} is not a viable uop",
+                            part.instr.inst,
+                        )
+                    return
+                if not part.active_caches:
+                    if part.instr.name == "_SAVE_RETURN_OFFSET":
+                        size, offset = OPARG_SIZES["OPARG_SAVE_RETURN_OFFSET"], cache_offset
+                    else:
+                        size, offset = OPARG_SIZES["OPARG_FULL"], 0
+                else:
+                    # If this assert triggers, is_viable_uops() lied
+                    assert len(part.active_caches) == 1, (name, part.instr.name)
+                    cache = part.active_caches[0]
+                    size, offset = cache.effect.size, cache.offset
+                expansions.append((part.instr.name, size, offset))
+        assert len(expansions) > 0, f"Macro {name} has empty expansion?!"
+        self.write_expansions(name, expansions)
+
+    def write_super_expansions(self, name: str) -> None:
+        """Write special macro expansions for super-instructions.
+
+        If you get an assertion failure here, you probably have accidentally
+        violated one of the assumptions here.
+
+        - A super-instruction's name is of the form FIRST_SECOND where
+          FIRST and SECOND are regular instructions whose name has the
+          form FOO_BAR. Thus, there must be exactly 3 underscores.
+          Example: LOAD_CONST_STORE_FAST.
+
+        - A super-instruction's body uses `oparg1 and `oparg2`, and no
+          other instruction's body uses those variable names.
+
+        - A super-instruction has no active (used) cache entries.
+
+        In the expansion, the first instruction's operand is all but the
+        bottom 4 bits of the super-instruction's oparg, and the second
+        instruction's operand is the bottom 4 bits. We use the special
+        size codes OPARG_TOP and OPARG_BOTTOM for these.
+        """
+        pieces = name.split("_")
+        assert len(pieces) == 4, f"{name} doesn't look like a super-instr"
+        name1 = "_".join(pieces[:2])
+        name2 = "_".join(pieces[2:])
+        assert name1 in self.instrs, f"{name1} doesn't match any instr"
+        assert name2 in self.instrs, f"{name2} doesn't match any instr"
+        instr1 = self.instrs[name1]
+        instr2 = self.instrs[name2]
+        assert not instr1.active_caches, f"{name1} has active caches"
+        assert not instr2.active_caches, f"{name2} has active caches"
+        expansions: list[tuple[str, int, int]] = [
+            (name1, OPARG_SIZES["OPARG_TOP"], 0),
+            (name2, OPARG_SIZES["OPARG_BOTTOM"], 0),
+        ]
+        self.write_expansions(name, expansions)
+
+    def write_expansions(
+        self, name: str, expansions: list[tuple[str, int, int]]
+    ) -> None:
+        pieces = [
+            f"{{ {name}, {size}, {offset} }}" for name, size, offset in expansions
+        ]
         self.out.emit(
-            f"    [{instr.name}] = {{ true, {INSTR_FMT_PREFIX}{instr.instr_fmt} }},"
+            f"[{name}] = "
+            f"{{ .nuops = {len(pieces)}, .uops = {{ {', '.join(pieces)} }} }},"
         )
 
-    def write_metadata_for_super(self, sup: SuperInstruction) -> None:
-        """Write metadata for a super-instruction."""
+    def emit_metadata_entry(self, name: str, fmt: str | None, flags: InstructionFlags) -> None:
+        flag_names = flags.names(value=True)
+        if not flag_names:
+            flag_names.append("0")
+        fmt_macro = "0" if fmt is None else INSTR_FMT_PREFIX + fmt
         self.out.emit(
-            f"    [{sup.name}] = {{ true, {INSTR_FMT_PREFIX}{sup.instr_fmt} }},"
+            f"[{name}] = {{ true, {fmt_macro},"
+            f" {' | '.join(flag_names)} }},"
         )
 
+    def write_metadata_for_inst(self, instr: Instruction) -> None:
+        """Write metadata for a single instruction."""
+        self.emit_metadata_entry(instr.name, instr.instr_fmt, instr.instr_flags)
+
     def write_metadata_for_macro(self, mac: MacroInstruction) -> None:
         """Write metadata for a macro-instruction."""
-        self.out.emit(
-            f"    [{mac.name}] = {{ true, {INSTR_FMT_PREFIX}{mac.instr_fmt} }},"
-        )
+        self.emit_metadata_entry(mac.name, mac.instr_fmt, mac.instr_flags)
 
-    def write_instructions(self) -> None:
+    def write_metadata_for_pseudo(self, ps: PseudoInstruction) -> None:
+        """Write metadata for a macro-instruction."""
+        self.emit_metadata_entry(ps.name, None, ps.instr_flags)
+
+    def write_instructions(
+        self, output_filename: str, emit_line_directives: bool
+    ) -> None:
         """Write instructions to output file."""
-        with open(self.output_filename, "w") as f:
+        with open(output_filename, "w") as f:
             # Create formatter
-            self.out = Formatter(f, 8, self.emit_line_directives)
+            self.out = Formatter(f, 8, emit_line_directives)
 
-            # Write provenance header
-            self.out.write_raw(f"// This file is generated by {THIS}\n")
-            self.out.write_raw(self.from_source_files())
-            self.out.write_raw(f"// Do not edit!\n")
+            self.write_provenance_header()
+
+            self.out.write_raw("\n")
+            self.out.write_raw("#ifdef TIER_TWO\n")
+            self.out.write_raw("    #error \"This file is for Tier 1 only\"\n")
+            self.out.write_raw("#endif\n")
+            self.out.write_raw("#define TIER_ONE 1\n")
 
             # Write and count instructions of all kinds
-            n_instrs = 0
-            n_supers = 0
             n_macros = 0
+            cases = []
             for thing in self.everything:
                 match thing:
-                    case OverriddenInstructionPlaceHolder():
-                        self.write_overridden_instr_place_holder(thing)
-                    case parser.InstDef():
-                        if thing.kind != "op":
-                            n_instrs += 1
-                            self.write_instr(self.instrs[thing.name])
-                    case parser.Super():
-                        n_supers += 1
-                        self.write_super(self.super_instrs[thing.name])
-                    case parser.Macro():
+                    case parsing.InstDef():
+                        pass
+                    case parsing.Macro():
                         n_macros += 1
-                        self.write_macro(self.macro_instrs[thing.name])
+                        mac = self.macro_instrs[thing.name]
+                        cases.append((mac.name, mac))
+                    case parsing.Pseudo():
+                        pass
                     case _:
-                        typing.assert_never(thing)
+                        assert_never(thing)
+            cases.sort()
+            for _, mac in cases:
+                stacking.write_macro_instr(mac, self.out)
+
+            self.out.write_raw("\n")
+            self.out.write_raw("#undef TIER_ONE\n")
 
         print(
-            f"Wrote {n_instrs} instructions, {n_supers} supers, "
-            f"and {n_macros} macros to {self.output_filename}",
+            f"Wrote {n_macros} cases to {output_filename}",
             file=sys.stderr,
         )
 
-    def write_overridden_instr_place_holder(self,
-            place_holder: OverriddenInstructionPlaceHolder) -> None:
-        self.out.emit("")
-        self.out.emit(
-            f"// TARGET({place_holder.name}) overridden by later definition")
+    def write_executor_instructions(
+        self, executor_filename: str, emit_line_directives: bool
+    ) -> None:
+        """Generate cases for the Tier 2 interpreter."""
+        n_uops = 0
+        with open(executor_filename, "w") as f:
+            self.out = Formatter(f, 8, emit_line_directives)
+            self.write_provenance_header()
+
+            self.out.write_raw("\n")
+            self.out.write_raw("#ifdef TIER_ONE\n")
+            self.out.write_raw("    #error \"This file is for Tier 2 only\"\n")
+            self.out.write_raw("#endif\n")
+            self.out.write_raw("#define TIER_TWO 2\n")
+
+            for instr in self.instrs.values():
+                if instr.is_viable_uop():
+                    n_uops += 1
+                    self.out.emit("")
+                    with self.out.block(f"case {instr.name}:"):
+                        if instr.instr_flags.HAS_ARG_FLAG:
+                            self.out.emit("oparg = CURRENT_OPARG();")
+                        stacking.write_single_instr(instr, self.out, tier=TIER_TWO)
+                        if instr.check_eval_breaker:
+                            self.out.emit("CHECK_EVAL_BREAKER();")
+                        self.out.emit("break;")
+
+            self.out.write_raw("\n")
+            self.out.write_raw("#undef TIER_TWO\n")
 
-    def write_instr(self, instr: Instruction) -> None:
-        name = instr.name
-        self.out.emit("")
-        if instr.inst.override:
-            self.out.emit("// Override")
-        with self.out.block(f"TARGET({name})"):
-            if instr.predicted:
-                self.out.emit(f"PREDICTED({name});")
-            instr.write(self.out)
-            if not instr.always_exits:
-                for prediction in instr.predictions:
-                    self.out.emit(f"PREDICT({prediction});")
-                if instr.check_eval_breaker:
-                    self.out.emit("CHECK_EVAL_BREAKER();")
-                self.out.emit(f"DISPATCH();")
-
-    def write_super(self, sup: SuperInstruction) -> None:
-        """Write code for a super-instruction."""
-        with self.wrap_super_or_macro(sup):
-            first = True
-            for comp in sup.parts:
-                if not first:
-                    self.out.emit("oparg = (next_instr++)->op.arg;")
-                # self.out.emit("next_instr += OPSIZE(opcode) - 1;")
-                first = False
-                comp.write_body(self.out, 0)
-                if comp.instr.cache_offset:
-                    self.out.emit(f"next_instr += {comp.instr.cache_offset};")
-
-    def write_macro(self, mac: MacroInstruction) -> None:
-        """Write code for a macro instruction."""
-        last_instr: Instruction | None = None
-        with self.wrap_super_or_macro(mac):
-            cache_adjust = 0
-            for part in mac.parts:
-                match part:
-                    case parser.CacheEffect(size=size):
-                        cache_adjust += size
-                    case Component() as comp:
-                        last_instr = comp.instr
-                        comp.write_body(self.out, cache_adjust)
-                        cache_adjust += comp.instr.cache_offset
-
-            if cache_adjust:
-                self.out.emit(f"next_instr += {cache_adjust};")
-
-            if (
-                last_instr
-                and (family := last_instr.family)
-                and mac.name == family.members[0]
-                and (cache_size := family.size)
-            ):
-                self.out.emit(
-                    f"static_assert({cache_size} == "
-                    f'{cache_adjust}, "incorrect cache size");'
-                )
+        print(
+            f"Wrote {n_uops} cases to {executor_filename}",
+            file=sys.stderr,
+        )
 
-    @contextlib.contextmanager
-    def wrap_super_or_macro(self, up: SuperOrMacroInstruction):
-        """Shared boilerplate for super- and macro instructions."""
-        # TODO: Somewhere (where?) make it so that if one instruction
-        # has an output that is input to another, and the variable names
-        # and types match and don't conflict with other instructions,
-        # that variable is declared with the right name and type in the
-        # outer block, rather than trusting the compiler to optimize it.
-        self.out.emit("")
-        with self.out.block(f"TARGET({up.name})"):
-            for i, var in reversed(list(enumerate(up.stack))):
-                src = None
-                if i < up.initial_sp:
-                    src = StackEffect(f"stack_pointer[-{up.initial_sp - i}]", "")
-                self.out.declare(var, src)
+    def write_abstract_interpreter_instructions(
+        self, abstract_interpreter_filename: str, emit_line_directives: bool
+    ) -> None:
+        """Generate cases for the Tier 2 abstract interpreter/analzyer."""
+        with open(abstract_interpreter_filename, "w") as f:
+            self.out = Formatter(f, 8, emit_line_directives)
+            self.write_provenance_header()
+            for instr in self.instrs.values():
+                instr = AbstractInstruction(instr.inst)
+                if (
+                    instr.is_viable_uop()
+                    and instr.name not in SPECIALLY_HANDLED_ABSTRACT_INSTR
+                ):
+                    self.out.emit("")
+                    with self.out.block(f"case {instr.name}:"):
+                        instr.write(self.out, tier=TIER_TWO)
+                        self.out.emit("break;")
+        print(
+            f"Wrote some stuff to {abstract_interpreter_filename}",
+            file=sys.stderr,
+        )
 
-            yield
 
-            # TODO: Use slices of up.stack instead of numeric values
-            self.out.stack_adjust(up.final_sp - up.initial_sp, [], [])
-
-            for i, var in enumerate(reversed(up.stack[: up.final_sp]), 1):
-                dst = StackEffect(f"stack_pointer[-{i}]", "")
-                self.out.assign(dst, var)
-
-            self.out.emit(f"DISPATCH();")
-
-
-def extract_block_text(block: parser.Block) -> tuple[list[str], bool, list[str], int]:
-    # Get lines of text with proper dedent
-    blocklines = block.text.splitlines(True)
-    first_token: lx.Token = block.tokens[0]  # IndexError means the context is broken
-    block_line = first_token.begin[0]
-
-    # Remove blank lines from both ends
-    while blocklines and not blocklines[0].strip():
-        blocklines.pop(0)
-        block_line += 1
-    while blocklines and not blocklines[-1].strip():
-        blocklines.pop()
-
-    # Remove leading and trailing braces
-    assert blocklines and blocklines[0].strip() == "{"
-    assert blocklines and blocklines[-1].strip() == "}"
-    blocklines.pop()
-    blocklines.pop(0)
-    block_line += 1
-
-    # Remove trailing blank lines
-    while blocklines and not blocklines[-1].strip():
-        blocklines.pop()
-
-    # Separate CHECK_EVAL_BREAKER() macro from end
-    check_eval_breaker = \
-        blocklines != [] and blocklines[-1].strip() == "CHECK_EVAL_BREAKER();"
-    if check_eval_breaker:
-        del blocklines[-1]
-
-    # Separate PREDICT(...) macros from end
-    predictions: list[str] = []
-    while blocklines and (
-        m := re.match(r"^\s*PREDICT\((\w+)\);\s*(?://.*)?$", blocklines[-1])
+def is_super_instruction(mac: MacroInstruction) -> bool:
+    if (
+        len(mac.parts) == 1
+        and isinstance(mac.parts[0], Component)
+        and variable_used(mac.parts[0].instr.inst, "oparg1")
     ):
-        predictions.insert(0, m.group(1))
-        blocklines.pop()
-
-    return blocklines, check_eval_breaker, predictions, block_line
-
-
-def always_exits(lines: list[str]) -> bool:
-    """Determine whether a block always ends in a return/goto/etc."""
-    if not lines:
-        return False
-    line = lines[-1].rstrip()
-    # Indent must match exactly (TODO: Do something better)
-    if line[:12] != " " * 12:
+        assert variable_used(mac.parts[0].instr.inst, "oparg2")
+        return True
+    else:
         return False
-    line = line[12:]
-    return line.startswith(
-        (
-            "goto ",
-            "return ",
-            "DISPATCH",
-            "GO_TO_",
-            "Py_UNREACHABLE()",
-            "ERROR_IF(true, ",
-        )
-    )
-
-
-def variable_used(node: parser.Node, name: str) -> bool:
-    """Determine whether a variable with a given name is used in a node."""
-    return any(
-        token.kind == "IDENTIFIER" and token.text == name for token in node.tokens
-    )
 
 
-def main():
+def main() -> None:
     """Parse command line, parse input, analyze, write output."""
     args = arg_parser.parse_args()  # Prints message and sys.exit(2) on error
     if len(args.input) == 0:
         args.input.append(DEFAULT_INPUT)
-    a = Analyzer(args.input, args.output, args.metadata)  # Raises OSError if input unreadable
-    if args.emit_line_directives:
-        a.emit_line_directives = True
+
+    # Raises OSError if input unreadable
+    a = Generator(args.input)
+
     a.parse()  # Raises SyntaxError on failure
     a.analyze()  # Prints messages and sets a.errors on failure
     if a.errors:
         sys.exit(f"Found {a.errors} errors")
-    a.write_instructions()  # Raises OSError if output can't be written
-    a.write_metadata()
+    if args.viable:
+        # Load execution counts from bmraw.json, if it exists
+        a.report_non_viable_uops("bmraw.json")
+        return
+
+    # These raise OSError if output can't be written
+
+    a.assign_opcode_ids()
+    a.write_opcode_targets(args.opcode_targets_h)
+    a.write_metadata(args.metadata, args.pymetadata)
+    a.write_executor_instructions(args.executor_cases, args.emit_line_directives)
+    a.write_abstract_interpreter_instructions(
+        args.abstract_interpreter_cases, args.emit_line_directives
+    )
 
 
 if __name__ == "__main__":
diff --git a/Tools/cases_generator/generators_common.py b/Tools/cases_generator/generators_common.py
new file mode 100644
index 00000000000000..76900d1efffd5d
--- /dev/null
+++ b/Tools/cases_generator/generators_common.py
@@ -0,0 +1,19 @@
+from pathlib import Path
+from typing import TextIO
+
+ROOT = Path(__file__).parent.parent.parent
+DEFAULT_INPUT = (ROOT / "Python/bytecodes.c").absolute()
+
+
+def root_relative_path(filename: str) -> str:
+    return Path(filename).relative_to(ROOT).as_posix()
+
+
+def write_header(generator: str, source: str, outfile: TextIO) -> None:
+    outfile.write(
+        f"""// This file is generated by {root_relative_path(generator)}
+// from:
+//   {source}
+// Do not edit!
+"""
+    )
diff --git a/Tools/cases_generator/instructions.py b/Tools/cases_generator/instructions.py
new file mode 100644
index 00000000000000..149a08810e4ae5
--- /dev/null
+++ b/Tools/cases_generator/instructions.py
@@ -0,0 +1,355 @@
+import dataclasses
+import re
+import typing
+
+from flags import InstructionFlags, variable_used, variable_used_unspecialized
+from formatting import (
+    Formatter,
+    UNUSED,
+    list_effect_size,
+)
+import lexer as lx
+import parsing
+from parsing import StackEffect
+import stacking
+
+BITS_PER_CODE_UNIT = 16
+
+
+@dataclasses.dataclass
+class ActiveCacheEffect:
+    """Wraps a CacheEffect that is actually used, in context."""
+
+    effect: parsing.CacheEffect
+    offset: int
+
+
+FORBIDDEN_NAMES_IN_UOPS = (
+    "next_instr",
+    "oparg1",  # Proxy for super-instructions like LOAD_FAST_LOAD_FAST
+    "JUMPBY",
+    "DISPATCH",
+    "TIER_ONE_ONLY",
+)
+
+
+# Interpreter tiers
+TIER_ONE: typing.Final = 1  # Specializing adaptive interpreter (PEP 659)
+TIER_TWO: typing.Final = 2  # Experimental tracing interpreter
+Tiers: typing.TypeAlias = typing.Literal[1, 2]
+
+
+@dataclasses.dataclass
+class Instruction:
+    """An instruction with additional data and code."""
+
+    # Parts of the underlying instruction definition
+    inst: parsing.InstDef
+    name: str
+    annotations: list[str]
+    block: parsing.Block
+    block_text: list[str]  # Block.text, less curlies, less PREDICT() calls
+    block_line: int  # First line of block in original code
+
+    # Computed by constructor
+    always_exits: str  # If the block always exits, its last line; else ""
+    has_deopt: bool
+    needs_this_instr: bool
+    cache_offset: int
+    cache_effects: list[parsing.CacheEffect]
+    input_effects: list[StackEffect]
+    output_effects: list[StackEffect]
+    unmoved_names: frozenset[str]
+    instr_fmt: str
+    instr_flags: InstructionFlags
+    active_caches: list[ActiveCacheEffect]
+
+    # Set later
+    family: parsing.Family | None = None
+    predicted: bool = False
+
+    def __init__(self, inst: parsing.InstDef):
+        self.inst = inst
+        self.name = inst.name
+        self.annotations = inst.annotations
+        self.block = inst.block
+        self.block_text, self.check_eval_breaker, self.block_line = extract_block_text(
+            self.block
+        )
+        self.always_exits = always_exits(self.block_text)
+        self.has_deopt = variable_used(self.inst, "DEOPT_IF")
+        self.cache_effects = [
+            effect for effect in inst.inputs if isinstance(effect, parsing.CacheEffect)
+        ]
+        self.cache_offset = sum(c.size for c in self.cache_effects)
+        self.needs_this_instr = variable_used(self.inst, "this_instr") or any(c.name != UNUSED for c in self.cache_effects)
+        self.input_effects = [
+            effect for effect in inst.inputs if isinstance(effect, StackEffect)
+        ]
+        self.output_effects = inst.outputs  # For consistency/completeness
+        unmoved_names: set[str] = set()
+        for ieffect, oeffect in zip(self.input_effects, self.output_effects):
+            if ieffect == oeffect and ieffect.name == oeffect.name:
+                unmoved_names.add(ieffect.name)
+            else:
+                break
+        self.unmoved_names = frozenset(unmoved_names)
+
+        self.instr_flags = InstructionFlags.fromInstruction(inst)
+
+        self.active_caches = []
+        offset = 0
+        for effect in self.cache_effects:
+            if effect.name != UNUSED:
+                self.active_caches.append(ActiveCacheEffect(effect, offset))
+            offset += effect.size
+
+        if self.instr_flags.HAS_ARG_FLAG:
+            fmt = "IB"
+        else:
+            fmt = "IX"
+        if offset:
+            fmt += "C" + "0" * (offset - 1)
+        self.instr_fmt = fmt
+
+    def is_viable_uop(self) -> bool:
+        """Whether this instruction is viable as a uop."""
+        dprint: typing.Callable[..., None] = lambda *args, **kwargs: None
+        if "FRAME" in self.name:
+            dprint = print
+
+        if self.name == "_EXIT_TRACE":
+            return True  # This has 'return frame' but it's okay
+        if self.name == "_SAVE_RETURN_OFFSET":
+            return True  # Adjusts next_instr, but only in tier 1 code
+        if self.always_exits:
+            dprint(f"Skipping {self.name} because it always exits: {self.always_exits}")
+            return False
+        if len(self.active_caches) > 1:
+            # print(f"Skipping {self.name} because it has >1 cache entries")
+            return False
+        res = True
+        for forbidden in FORBIDDEN_NAMES_IN_UOPS:
+            # NOTE: To disallow unspecialized uops, use
+            # if variable_used(self.inst, forbidden):
+            if variable_used_unspecialized(self.inst, forbidden):
+                dprint(f"Skipping {self.name} because it uses {forbidden}")
+                res = False
+        return res
+
+    def write_body(
+        self,
+        out: Formatter,
+        dedent: int,
+        active_caches: list[ActiveCacheEffect],
+        tier: Tiers,
+        family: parsing.Family | None,
+    ) -> None:
+        """Write the instruction body."""
+        # Write cache effect variable declarations and initializations
+        for active in active_caches:
+            ceffect = active.effect
+            bits = ceffect.size * BITS_PER_CODE_UNIT
+            if bits == 64:
+                # NOTE: We assume that 64-bit data in the cache
+                # is always an object pointer.
+                # If this becomes false, we need a way to specify
+                # syntactically what type the cache data is.
+                typ = "PyObject *"
+                func = "read_obj"
+            else:
+                typ = f"uint{bits}_t "
+                func = f"read_u{bits}"
+            if tier == TIER_ONE:
+                out.emit(
+                    f"{typ}{ceffect.name} = "
+                    f"{func}(&this_instr[{active.offset + 1}].cache);"
+                )
+            else:
+                out.emit(f"{typ}{ceffect.name} = ({typ.strip()})CURRENT_OPERAND();")
+
+        # Write the body, substituting a goto for ERROR_IF() and other stuff
+        assert dedent <= 0
+        extra = " " * -dedent
+        names_to_skip = self.unmoved_names | frozenset({UNUSED, "null"})
+        offset = 0
+        context = self.block.context
+        assert context is not None and context.owner is not None
+        filename = context.owner.filename
+        for line in self.block_text:
+            out.set_lineno(self.block_line + offset, filename)
+            offset += 1
+            if m := re.match(r"(\s*)ERROR_IF\((.+), (\w+)\);\s*(?://.*)?$", line):
+                space, cond, label = m.groups()
+                space = extra + space
+                # ERROR_IF() must pop the inputs from the stack.
+                # The code block is responsible for DECREF()ing them.
+                # NOTE: If the label doesn't exist, just add it to ceval.c.
+
+                # Don't pop common input/output effects at the bottom!
+                # These aren't DECREF'ed so they can stay.
+                ieffs = list(self.input_effects)
+                oeffs = list(self.output_effects)
+                while (
+                    ieffs
+                    and oeffs
+                    and ieffs[0] == oeffs[0]
+                    and ieffs[0].name == oeffs[0].name
+                ):
+                    ieffs.pop(0)
+                    oeffs.pop(0)
+                ninputs, symbolic = list_effect_size(ieffs)
+                if ninputs:
+                    label = f"pop_{ninputs}_{label}"
+                if tier == TIER_TWO:
+                    label = label + "_tier_two"
+                if symbolic:
+                    out.write_raw(
+                        f"{space}if ({cond}) {{ STACK_SHRINK({symbolic}); goto {label}; }}\n"
+                    )
+                else:
+                    out.write_raw(f"{space}if ({cond}) goto {label};\n")
+            elif m := re.match(r"(\s*)DEOPT_IF\((.+)\);\s*(?://.*)?$", line):
+                space, cond = m.groups()
+                space = extra + space
+                target = family.name if family else self.name
+                out.write_raw(f"{space}DEOPT_IF({cond}, {target});\n")
+            elif "DEOPT" in line:
+                filename = context.owner.filename
+                lineno = context.owner.tokens[context.begin].line
+                print(f"{filename}:{lineno}: ERROR: DEOPT_IF() must be all on one line")
+                out.write_raw(extra + line)
+            elif m := re.match(r"(\s*)DECREF_INPUTS\(\);\s*(?://.*)?$", line):
+                out.reset_lineno()
+                space = extra + m.group(1)
+                for ieff in self.input_effects:
+                    if ieff.name in names_to_skip:
+                        continue
+                    if ieff.size:
+                        out.write_raw(
+                            f"{space}for (int _i = {ieff.size}; --_i >= 0;) {{\n"
+                        )
+                        out.write_raw(f"{space}    Py_DECREF({ieff.name}[_i]);\n")
+                        out.write_raw(f"{space}}}\n")
+                    else:
+                        decref = "XDECREF" if ieff.cond else "DECREF"
+                        out.write_raw(f"{space}Py_{decref}({ieff.name});\n")
+            else:
+                out.write_raw(extra + line)
+        out.reset_lineno()
+
+
+InstructionOrCacheEffect = Instruction | parsing.CacheEffect
+
+
+# Instruction used for abstract interpretation.
+class AbstractInstruction(Instruction):
+    def __init__(self, inst: parsing.InstDef):
+        super().__init__(inst)
+
+    def write(self, out: Formatter, tier: Tiers = TIER_ONE) -> None:
+        """Write one abstract instruction, sans prologue and epilogue."""
+        stacking.write_single_instr_for_abstract_interp(self, out)
+
+    def write_body(
+        self,
+        out: Formatter,
+        dedent: int,
+        active_caches: list[ActiveCacheEffect],
+        tier: Tiers,
+        family: parsing.Family | None,
+    ) -> None:
+        pass
+
+
+@dataclasses.dataclass
+class Component:
+    instr: Instruction
+    active_caches: list[ActiveCacheEffect]
+
+
+MacroParts = list[Component | parsing.CacheEffect]
+
+
+@dataclasses.dataclass
+class MacroInstruction:
+    """A macro instruction."""
+
+    name: str
+    instr_fmt: str
+    instr_flags: InstructionFlags
+    macro: parsing.Macro
+    parts: MacroParts
+    cache_offset: int
+    # Set later
+    predicted: bool = False
+    family: parsing.Family | None = None
+
+
+@dataclasses.dataclass
+class PseudoInstruction:
+    """A pseudo instruction."""
+
+    name: str
+    targets: list[Instruction | MacroInstruction]
+    instr_flags: InstructionFlags
+
+
+AnyInstruction = Instruction | MacroInstruction | PseudoInstruction
+
+
+def extract_block_text(block: parsing.Block) -> tuple[list[str], bool, int]:
+    # Get lines of text with proper dedent
+    blocklines = block.text.splitlines(True)
+    first_token: lx.Token = block.tokens[0]  # IndexError means the context is broken
+    block_line = first_token.begin[0]
+
+    # Remove blank lines from both ends
+    while blocklines and not blocklines[0].strip():
+        blocklines.pop(0)
+        block_line += 1
+    while blocklines and not blocklines[-1].strip():
+        blocklines.pop()
+
+    # Remove leading and trailing braces
+    assert blocklines and blocklines[0].strip() == "{"
+    assert blocklines and blocklines[-1].strip() == "}"
+    blocklines.pop()
+    blocklines.pop(0)
+    block_line += 1
+
+    # Remove trailing blank lines
+    while blocklines and not blocklines[-1].strip():
+        blocklines.pop()
+
+    # Separate CHECK_EVAL_BREAKER() macro from end
+    check_eval_breaker = (
+        blocklines != [] and blocklines[-1].strip() == "CHECK_EVAL_BREAKER();"
+    )
+    if check_eval_breaker:
+        del blocklines[-1]
+
+    return blocklines, check_eval_breaker, block_line
+
+
+def always_exits(lines: list[str]) -> str:
+    """Determine whether a block always ends in a return/goto/etc."""
+    if not lines:
+        return ""
+    line = lines[-1].rstrip()
+    # Indent must match exactly (TODO: Do something better)
+    if line[:12] != " " * 12:
+        return ""
+    line = line[12:]
+    if line.startswith(
+        (
+            "goto ",
+            "return ",
+            "DISPATCH",
+            "GO_TO_",
+            "Py_UNREACHABLE()",
+            "ERROR_IF(true, ",
+        )
+    ):
+        return line
+    return ""
diff --git a/Tools/cases_generator/interpreter_definition.md b/Tools/cases_generator/interpreter_definition.md
index 6f902f60c68ee7..5c4238756748a7 100644
--- a/Tools/cases_generator/interpreter_definition.md
+++ b/Tools/cases_generator/interpreter_definition.md
@@ -67,17 +67,17 @@ parts of instructions, we can reduce the potential for errors considerably.
 
 ## Specification
 
-This specification is at an early stage and is likely to change considerably.
+This specification is a work in progress.
+We update it as the need arises.
 
-Syntax
-------
+### Syntax
 
 Each op definition has a kind, a name, a stack and instruction stream effect,
 and a piece of C code describing its semantics::
  
 ```
   file:
-    (definition | family)+
+    (definition | family | pseudo)+
 
   definition:
     "inst" "(" NAME ["," stack_effect] ")" "{" C-code "}"
@@ -85,8 +85,6 @@ and a piece of C code describing its semantics::
     "op" "(" NAME "," stack_effect ")" "{" C-code "}"
     |
     "macro" "(" NAME ")" "=" uop ("+" uop)* ";"
-    |
-    "super" "(" NAME ")" "=" NAME ("+" NAME)* ";"
  
   stack_effect:
     "(" [inputs] "--" [outputs] ")"
@@ -110,7 +108,7 @@ and a piece of C code describing its semantics::
     NAME [":" type] [ "if" "(" C-expression ")" ]
 
   type:
-    NAME
+    NAME ["*"]
 
   stream:
     NAME "/" size
@@ -122,7 +120,10 @@ and a piece of C code describing its semantics::
     object "[" C-expression "]"
 
   family:
-    "family" "(" NAME ")" = "{" NAME ("," NAME)+ "}" ";"
+    "family" "(" NAME ")" = "{" NAME ("," NAME)+ [","] "}" ";"
+
+  pseudo:
+    "pseudo" "(" NAME ")" = "{" NAME ("," NAME)+ [","] "}" ";"
 ```
 
 The following definitions may occur:
@@ -130,8 +131,6 @@ The following definitions may occur:
 * `inst`: A normal instruction, as previously defined by `TARGET(NAME)` in `ceval.c`.
 * `op`: A part instruction from which macros can be constructed.
 * `macro`: A bytecode instruction constructed from ops and cache effects.
-* `super`: A super-instruction, such as `LOAD_FAST__LOAD_FAST`, constructed from
-  normal or macro instructions.
 
 `NAME` can be any ASCII identifier that is a C identifier and not a C or Python keyword.
 `foo_1` is legal. `$` is not legal, nor is `struct` or `class`.
@@ -159,15 +158,21 @@ By convention cache effects (`stream`) must precede the input effects.
 
 The name `oparg` is pre-defined as a 32 bit value fetched from the instruction stream.
 
+### Special functions/macros
+
 The C code may include special functions that are understood by the tools as
 part of the DSL.
 
 Those functions include:
 
 * `DEOPT_IF(cond, instruction)`. Deoptimize if `cond` is met.
-* `ERROR_IF(cond, label)`. Jump to error handler if `cond` is true.
+* `ERROR_IF(cond, label)`. Jump to error handler at `label` if `cond` is true.
 * `DECREF_INPUTS()`. Generate `Py_DECREF()` calls for the input stack effects.
 
+Note that the use of `DECREF_INPUTS()` is optional -- manual calls
+to `Py_DECREF()` or other approaches are also acceptable
+(e.g. calling an API that "steals" a reference).
+
 Variables can either be defined in the input, output, or in the C code.
 Variables defined in the input may not be assigned in the C code.
 If an `ERROR_IF` occurs, all values will be removed from the stack;
@@ -187,17 +192,39 @@ These requirements result in the following constraints on the use of
    intermediate results.)
 3. No `DEOPT_IF` may follow an `ERROR_IF` in the same block.
 
-Semantics
----------
+(There is some wiggle room: these rules apply to dynamic code paths,
+not to static occurrences in the source code.)
+
+If code detects an error condition before the first `DECREF` of an input,
+two idioms are valid:
+
+- Use `goto error`.
+- Use a block containing the appropriate `DECREF` calls ending in
+  `ERROR_IF(true, error)`.
+
+An example of the latter would be:
+```cc
+    res = PyObject_Add(left, right);
+    if (res == NULL) {
+        DECREF_INPUTS();
+        ERROR_IF(true, error);
+    }
+```
+
+### Semantics
 
 The underlying execution model is a stack machine.
 Operations pop values from the stack, and push values to the stack.
 They also can look at, and consume, values from the instruction stream.
 
-All members of a family must have the same stack and instruction stream effect.
+All members of a family
+(which represents a specializable instruction and its specializations)
+must have the same stack and instruction stream effect.
+
+The same is true for all members of a pseudo instruction
+(which is mapped by the bytecode compiler to one of its members).
 
-Examples
---------
+## Examples
 
 (Another source of examples can be found in the [tests](test_generator.py).)
 
@@ -237,27 +264,6 @@ This would generate:
     }
 ```
 
-### Super-instruction definition
-
-```C
-    super ( LOAD_FAST__LOAD_FAST ) = LOAD_FAST + LOAD_FAST ;
-```
-This might get translated into the following:
-```C
-    TARGET(LOAD_FAST__LOAD_FAST) {
-        PyObject *value;
-        value = frame->f_localsplus[oparg];
-        Py_INCREF(value);
-        PUSH(value);
-        NEXTOPARG();
-        next_instr++;
-        value = frame->f_localsplus[oparg];
-        Py_INCREF(value);
-        PUSH(value);
-        DISPATCH();
-    }
-```
-
 ### Input stack effect and cache effect
 ```C
     op ( CHECK_OBJECT_TYPE, (owner, type_version/2 -- owner) ) {
@@ -339,14 +345,26 @@ For explanations see "Generating the interpreter" below.)
     }
 ```
 
-### Define an instruction family
-These opcodes all share the same instruction format):
+### Defining an instruction family
+
+A _family_ maps a specializable instruction to its specializations.
+
+Example: These opcodes all share the same instruction format):
+```C
+    family(load_attr) = { LOAD_ATTR, LOAD_ATTR_INSTANCE_VALUE, LOAD_SLOT };
+```
+
+### Defining a pseudo instruction
+
+A _pseudo instruction_ is used by the bytecode compiler to represent a set of possible concrete instructions.
+
+Example: `JUMP` may expand to `JUMP_FORWARD` or `JUMP_BACKWARD`:
 ```C
-    family(load_attr) = { LOAD_ATTR, LOAD_ATTR_INSTANCE_VALUE, LOAD_SLOT } ;
+    pseudo(JUMP) = { JUMP_FORWARD, JUMP_BACKWARD };
 ```
 
-Generating the interpreter
-==========================
+
+## Generating the interpreter
 
 The generated C code for a single instruction includes a preamble and dispatch at the end
 which can be easily inserted. What is more complex is ensuring the correct stack effects
@@ -401,9 +419,7 @@ rather than popping and pushing, such that `LOAD_ATTR_SLOT` would look something
     }
 ```
 
-Other tools
-===========
+## Other tools
 
 From the instruction definitions we can generate the stack marking code used in `frame.set_lineno()`,
 and the tables for use by disassemblers.
-
diff --git a/Tools/cases_generator/lexer.py b/Tools/cases_generator/lexer.py
index 1c70d1c4089e4e..c3c2954a42083f 100644
--- a/Tools/cases_generator/lexer.py
+++ b/Tools/cases_generator/lexer.py
@@ -3,171 +3,268 @@
 # https://gist.github.com/markshannon/db7ab649440b5af765451bb77c7dba34
 
 import re
-import sys
-import collections
 from dataclasses import dataclass
+from collections.abc import Iterator
 
-def choice(*opts):
+
+def choice(*opts: str) -> str:
     return "|".join("(%s)" % opt for opt in opts)
 
+
 # Regexes
 
 # Longer operators must go before shorter ones.
 
-PLUSPLUS = r'\+\+'
-MINUSMINUS = r'--'
+PLUSPLUS = r"\+\+"
+MINUSMINUS = r"--"
 
 # ->
-ARROW = r'->'
-ELLIPSIS = r'\.\.\.'
+ARROW = r"->"
+ELLIPSIS = r"\.\.\."
 
 # Assignment operators
-TIMESEQUAL = r'\*='
-DIVEQUAL = r'/='
-MODEQUAL = r'%='
-PLUSEQUAL = r'\+='
-MINUSEQUAL = r'-='
-LSHIFTEQUAL = r'<<='
-RSHIFTEQUAL = r'>>='
-ANDEQUAL = r'&='
-OREQUAL = r'\|='
-XOREQUAL = r'\^='
+TIMESEQUAL = r"\*="
+DIVEQUAL = r"/="
+MODEQUAL = r"%="
+PLUSEQUAL = r"\+="
+MINUSEQUAL = r"-="
+LSHIFTEQUAL = r"<<="
+RSHIFTEQUAL = r">>="
+ANDEQUAL = r"&="
+OREQUAL = r"\|="
+XOREQUAL = r"\^="
 
 # Operators
-PLUS = r'\+'
-MINUS = r'-'
-TIMES = r'\*'
-DIVIDE = r'/'
-MOD = r'%'
-NOT = r'~'
-XOR = r'\^'
-LOR = r'\|\|'
-LAND = r'&&'
-LSHIFT = r'<<'
-RSHIFT = r'>>'
-LE = r'<='
-GE = r'>='
-EQ = r'=='
-NE = r'!='
-LT = r'<'
-GT = r'>'
-LNOT = r'!'
-OR = r'\|'
-AND = r'&'
-EQUALS = r'='
+PLUS = r"\+"
+MINUS = r"-"
+TIMES = r"\*"
+DIVIDE = r"/"
+MOD = r"%"
+NOT = r"~"
+XOR = r"\^"
+LOR = r"\|\|"
+LAND = r"&&"
+LSHIFT = r"<<"
+RSHIFT = r">>"
+LE = r"<="
+GE = r">="
+EQ = r"=="
+NE = r"!="
+LT = r"<"
+GT = r">"
+LNOT = r"!"
+OR = r"\|"
+AND = r"&"
+EQUALS = r"="
 
 # ?
-CONDOP = r'\?'
+CONDOP = r"\?"
 
 # Delimiters
-LPAREN = r'\('
-RPAREN = r'\)'
-LBRACKET = r'\['
-RBRACKET = r'\]'
-LBRACE = r'\{'
-RBRACE = r'\}'
-COMMA = r','
-PERIOD = r'\.'
-SEMI = r';'
-COLON = r':'
-BACKSLASH = r'\\'
-
-operators = { op: pattern for op, pattern in globals().items() if op == op.upper() }
+LPAREN = r"\("
+RPAREN = r"\)"
+LBRACKET = r"\["
+RBRACKET = r"\]"
+LBRACE = r"\{"
+RBRACE = r"\}"
+COMMA = r","
+PERIOD = r"\."
+SEMI = r";"
+COLON = r":"
+BACKSLASH = r"\\"
+
+operators = {op: pattern for op, pattern in globals().items() if op == op.upper()}
 for op in operators:
     globals()[op] = op
-opmap = { pattern.replace("\\", "") or '\\' : op for op, pattern in operators.items() }
+opmap = {pattern.replace("\\", "") or "\\": op for op, pattern in operators.items()}
 
 # Macros
-macro = r'# *(ifdef|ifndef|undef|define|error|endif|if|else|include|#)'
-MACRO = 'MACRO'
+macro = r"# *(ifdef|ifndef|undef|define|error|endif|if|else|include|#)"
+CMACRO = "CMACRO"
+
+id_re = r"[a-zA-Z_][0-9a-zA-Z_]*"
+IDENTIFIER = "IDENTIFIER"
 
-id_re = r'[a-zA-Z_][0-9a-zA-Z_]*'
-IDENTIFIER = 'IDENTIFIER'
 
-suffix = r'([uU]?[lL]?[lL]?)'
-octal = r'0[0-7]+' + suffix
-hex = r'0[xX][0-9a-fA-F]+'
-decimal_digits = r'(0|[1-9][0-9]*)'
+suffix = r"([uU]?[lL]?[lL]?)"
+octal = r"0[0-7]+" + suffix
+hex = r"0[xX][0-9a-fA-F]+"
+decimal_digits = r"(0|[1-9][0-9]*)"
 decimal = decimal_digits + suffix
 
 
 exponent = r"""([eE][-+]?[0-9]+)"""
 fraction = r"""([0-9]*\.[0-9]+)|([0-9]+\.)"""
-float = '(((('+fraction+')'+exponent+'?)|([0-9]+'+exponent+'))[FfLl]?)'
+float = "((((" + fraction + ")" + exponent + "?)|([0-9]+" + exponent + "))[FfLl]?)"
 
 number_re = choice(octal, hex, float, decimal)
-NUMBER = 'NUMBER'
+NUMBER = "NUMBER"
 
 simple_escape = r"""([a-zA-Z._~!=&\^\-\\?'"])"""
 decimal_escape = r"""(\d+)"""
 hex_escape = r"""(x[0-9a-fA-F]+)"""
-escape_sequence = r"""(\\("""+simple_escape+'|'+decimal_escape+'|'+hex_escape+'))'
-string_char = r"""([^"\\\n]|"""+escape_sequence+')'
-str_re = '"'+string_char+'*"'
-STRING = 'STRING'
-char = r'\'.\''  # TODO: escape sequence
-CHARACTER = 'CHARACTER'
+escape_sequence = (
+    r"""(\\(""" + simple_escape + "|" + decimal_escape + "|" + hex_escape + "))"
+)
+string_char = r"""([^"\\\n]|""" + escape_sequence + ")"
+str_re = '"' + string_char + '*"'
+STRING = "STRING"
+char = r"\'.\'"  # TODO: escape sequence
+CHARACTER = "CHARACTER"
 
-comment_re = r'//.*|/\*([^*]|\*[^/])*\*/'
-COMMENT = 'COMMENT'
+comment_re = r"(//.*)|/\*([^*]|\*[^/])*\*/"
+COMMENT = "COMMENT"
 
 newline = r"\n"
-invalid = r"\S"  # A single non-space character that's not caught by any of the other patterns
-matcher = re.compile(choice(id_re, number_re, str_re, char, newline, macro, comment_re, *operators.values(), invalid))
-letter = re.compile(r'[a-zA-Z_]')
-
-kwds = (
-    'AUTO', 'BREAK', 'CASE', 'CHAR', 'CONST',
-    'CONTINUE', 'DEFAULT', 'DO', 'DOUBLE', 'ELSE', 'ENUM', 'EXTERN',
-    'FLOAT', 'FOR', 'GOTO', 'IF', 'INLINE', 'INT', 'LONG', 'OVERRIDE',
-    'REGISTER', 'OFFSETOF',
-    'RESTRICT', 'RETURN', 'SHORT', 'SIGNED', 'SIZEOF', 'STATIC', 'STRUCT',
-    'SWITCH', 'TYPEDEF', 'UNION', 'UNSIGNED', 'VOID',
-    'VOLATILE', 'WHILE'
+invalid = (
+    r"\S"  # A single non-space character that's not caught by any of the other patterns
+)
+matcher = re.compile(
+    choice(
+        id_re,
+        number_re,
+        str_re,
+        char,
+        newline,
+        macro,
+        comment_re,
+        *operators.values(),
+        invalid,
+    )
 )
-for name in kwds:
-    globals()[name] = name
-keywords = { name.lower() : name for name in kwds }
+letter = re.compile(r"[a-zA-Z_]")
+
+
+kwds = []
+AUTO = "AUTO"
+kwds.append(AUTO)
+BREAK = "BREAK"
+kwds.append(BREAK)
+CASE = "CASE"
+kwds.append(CASE)
+CHAR = "CHAR"
+kwds.append(CHAR)
+CONST = "CONST"
+kwds.append(CONST)
+CONTINUE = "CONTINUE"
+kwds.append(CONTINUE)
+DEFAULT = "DEFAULT"
+kwds.append(DEFAULT)
+DO = "DO"
+kwds.append(DO)
+DOUBLE = "DOUBLE"
+kwds.append(DOUBLE)
+ELSE = "ELSE"
+kwds.append(ELSE)
+ENUM = "ENUM"
+kwds.append(ENUM)
+EXTERN = "EXTERN"
+kwds.append(EXTERN)
+FLOAT = "FLOAT"
+kwds.append(FLOAT)
+FOR = "FOR"
+kwds.append(FOR)
+GOTO = "GOTO"
+kwds.append(GOTO)
+IF = "IF"
+kwds.append(IF)
+INLINE = "INLINE"
+kwds.append(INLINE)
+INT = "INT"
+kwds.append(INT)
+LONG = "LONG"
+kwds.append(LONG)
+OFFSETOF = "OFFSETOF"
+kwds.append(OFFSETOF)
+RESTRICT = "RESTRICT"
+kwds.append(RESTRICT)
+RETURN = "RETURN"
+kwds.append(RETURN)
+SHORT = "SHORT"
+kwds.append(SHORT)
+SIGNED = "SIGNED"
+kwds.append(SIGNED)
+SIZEOF = "SIZEOF"
+kwds.append(SIZEOF)
+STATIC = "STATIC"
+kwds.append(STATIC)
+STRUCT = "STRUCT"
+kwds.append(STRUCT)
+SWITCH = "SWITCH"
+kwds.append(SWITCH)
+TYPEDEF = "TYPEDEF"
+kwds.append(TYPEDEF)
+UNION = "UNION"
+kwds.append(UNION)
+UNSIGNED = "UNSIGNED"
+kwds.append(UNSIGNED)
+VOID = "VOID"
+kwds.append(VOID)
+VOLATILE = "VOLATILE"
+kwds.append(VOLATILE)
+WHILE = "WHILE"
+kwds.append(WHILE)
+# An instruction in the DSL
+INST = "INST"
+kwds.append(INST)
+# A micro-op in the DSL
+OP = "OP"
+kwds.append(OP)
+# A macro in the DSL
+MACRO = "MACRO"
+kwds.append(MACRO)
+keywords = {name.lower(): name for name in kwds}
+
+ANNOTATION = "ANNOTATION"
+annotations = {"specializing", "guard", "override", "register", "replaced"}
+
+__all__ = []
+__all__.extend(kwds)
 
 
 def make_syntax_error(
-    message: str, filename: str, line: int, column: int, line_text: str,
+    message: str,
+    filename: str | None,
+    line: int,
+    column: int,
+    line_text: str,
 ) -> SyntaxError:
     return SyntaxError(message, (filename, line, column, line_text))
 
 
 @dataclass(slots=True)
 class Token:
+    filename: str
     kind: str
     text: str
     begin: tuple[int, int]
     end: tuple[int, int]
 
     @property
-    def line(self):
+    def line(self) -> int:
         return self.begin[0]
 
     @property
-    def column(self):
+    def column(self) -> int:
         return self.begin[1]
 
     @property
-    def end_line(self):
+    def end_line(self) -> int:
         return self.end[0]
 
     @property
-    def end_column(self):
+    def end_column(self) -> int:
         return self.end[1]
 
     @property
-    def width(self):
+    def width(self) -> int:
         return self.end[1] - self.begin[1]
 
-    def replaceText(self, txt):
+    def replaceText(self, txt: str) -> "Token":
         assert isinstance(txt, str)
-        return Token(self.kind, txt, self.begin, self.end)
+        return Token(self.filename, self.kind, txt, self.begin, self.end)
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         b0, b1 = self.begin
         e0, e1 = self.end
         if b0 == e0:
@@ -176,82 +273,86 @@ def __repr__(self):
             return f"{self.kind}({self.text!r}, {b0}:{b1}, {e0}:{e1})"
 
 
-def tokenize(src, line=1, filename=None):
+def tokenize(src: str, line: int = 1, filename: str = "") -> Iterator[Token]:
     linestart = -1
     for m in matcher.finditer(src):
         start, end = m.span()
         text = m.group(0)
         if text in keywords:
             kind = keywords[text]
+        elif text in annotations:
+            kind = ANNOTATION
         elif letter.match(text):
             kind = IDENTIFIER
-        elif text == '...':
+        elif text == "...":
             kind = ELLIPSIS
-        elif text == '.':
+        elif text == ".":
             kind = PERIOD
-        elif text[0] in '0123456789.':
+        elif text[0] in "0123456789.":
             kind = NUMBER
         elif text[0] == '"':
             kind = STRING
         elif text in opmap:
             kind = opmap[text]
-        elif text == '\n':
+        elif text == "\n":
             linestart = start
             line += 1
-            kind = '\n'
+            kind = "\n"
         elif text[0] == "'":
             kind = CHARACTER
-        elif text[0] == '#':
-            kind = MACRO
-        elif text[0] == '/' and text[1] in '/*':
+        elif text[0] == "#":
+            kind = CMACRO
+        elif text[0] == "/" and text[1] in "/*":
             kind = COMMENT
         else:
             lineend = src.find("\n", start)
             if lineend == -1:
                 lineend = len(src)
-            raise make_syntax_error(f"Bad token: {text}",
-                filename, line, start-linestart+1, src[linestart:lineend])
+            raise make_syntax_error(
+                f"Bad token: {text}",
+                filename,
+                line,
+                start - linestart + 1,
+                src[linestart:lineend],
+            )
         if kind == COMMENT:
-            begin = line, start-linestart
-            newlines = text.count('\n')
+            begin = line, start - linestart
+            newlines = text.count("\n")
             if newlines:
-                linestart = start + text.rfind('\n')
+                linestart = start + text.rfind("\n")
                 line += newlines
         else:
-            begin = line, start-linestart
+            begin = line, start - linestart
         if kind != "\n":
-            yield Token(kind, text, begin, (line, start-linestart+len(text)))
-
-
-__all__ = []
-__all__.extend([kind for kind in globals() if kind.upper() == kind])
+            yield Token(filename, kind, text, begin, (line, start - linestart + len(text)))
 
 
 def to_text(tkns: list[Token], dedent: int = 0) -> str:
     res: list[str] = []
-    line, col = -1, 1+dedent
+    line, col = -1, 1 + dedent
     for tkn in tkns:
         if line == -1:
             line, _ = tkn.begin
         l, c = tkn.begin
-        #assert(l >= line), (line, txt, start, end)
+        # assert(l >= line), (line, txt, start, end)
         while l > line:
             line += 1
-            res.append('\n')
-            col = 1+dedent
-        res.append(' '*(c-col))
+            res.append("\n")
+            col = 1 + dedent
+        res.append(" " * (c - col))
         text = tkn.text
-        if dedent != 0 and tkn.kind == 'COMMENT' and '\n' in text:
+        if dedent != 0 and tkn.kind == "COMMENT" and "\n" in text:
             if dedent < 0:
-                text = text.replace('\n', '\n' + ' '*-dedent)
+                text = text.replace("\n", "\n" + " " * -dedent)
             # TODO: dedent > 0
         res.append(text)
         line, col = tkn.end
-    return ''.join(res)
+    return "".join(res)
 
 
 if __name__ == "__main__":
     import sys
+
     filename = sys.argv[1]
     if filename == "-c":
         src = sys.argv[2]
diff --git a/Tools/cases_generator/mypy.ini b/Tools/cases_generator/mypy.ini
new file mode 100644
index 00000000000000..8e5a31851c596e
--- /dev/null
+++ b/Tools/cases_generator/mypy.ini
@@ -0,0 +1,15 @@
+[mypy]
+files = Tools/cases_generator/
+pretty = True
+
+# Make sure Python can still be built
+# using Python 3.10 for `PYTHON_FOR_REGEN`...
+python_version = 3.10
+
+# ...And be strict:
+strict = True
+strict_concatenate = True
+enable_error_code = ignore-without-code,redundant-expr,truthy-bool,possibly-undefined
+warn_unreachable = True
+allow_redefinition = True
+implicit_reexport = True
diff --git a/Tools/cases_generator/opcode_id_generator.py b/Tools/cases_generator/opcode_id_generator.py
new file mode 100644
index 00000000000000..a1f6f62156ebd3
--- /dev/null
+++ b/Tools/cases_generator/opcode_id_generator.py
@@ -0,0 +1,153 @@
+"""Generate the list of opcode IDs.
+Reads the instruction definitions from bytecodes.c.
+Writes the IDs to opcode._ids.h by default.
+"""
+
+import argparse
+import os.path
+import sys
+
+from analyzer import (
+    Analysis,
+    Instruction,
+    analyze_files,
+)
+from generators_common import (
+    DEFAULT_INPUT,
+    ROOT,
+    write_header,
+)
+from cwriter import CWriter
+from typing import TextIO
+
+
+DEFAULT_OUTPUT = ROOT / "Include/opcode_ids.h"
+
+
+def generate_opcode_header(filenames: str, analysis: Analysis, outfile: TextIO) -> None:
+    write_header(__file__, filenames, outfile)
+    out = CWriter(outfile, 0, False)
+    out.emit("\n")
+    instmap: dict[str, int] = {}
+
+    # 0 is reserved for cache entries. This helps debugging.
+    instmap["CACHE"] = 0
+
+    # 17 is reserved as it is the initial value for the specializing counter.
+    # This helps catch cases where we attempt to execute a cache.
+    instmap["RESERVED"] = 17
+
+    # 149 is RESUME - it is hard coded as such in Tools/build/deepfreeze.py
+    instmap["RESUME"] = 149
+    instmap["INSTRUMENTED_LINE"] = 254
+
+    instrumented = [
+        name for name in analysis.instructions if name.startswith("INSTRUMENTED")
+    ]
+
+    # Special case: this instruction is implemented in ceval.c
+    # rather than bytecodes.c, so we need to add it explicitly
+    # here (at least until we add something to bytecodes.c to
+    # declare external instructions).
+    instrumented.append("INSTRUMENTED_LINE")
+
+    specialized: set[str] = set()
+    no_arg: list[str] = []
+    has_arg: list[str] = []
+
+    for family in analysis.families.values():
+        specialized.update(inst.name for inst in family.members)
+
+    for inst in analysis.instructions.values():
+        name = inst.name
+        if name in specialized:
+            continue
+        if name in instrumented:
+            continue
+        if inst.properties.oparg:
+            has_arg.append(name)
+        else:
+            no_arg.append(name)
+
+    # Specialized ops appear in their own section
+    # Instrumented opcodes are at the end of the valid range
+    min_internal = 150
+    min_instrumented = 254 - (len(instrumented) - 1)
+    assert min_internal + len(specialized) < min_instrumented
+
+    next_opcode = 1
+
+    def add_instruction(name: str) -> None:
+        nonlocal next_opcode
+        if name in instmap:
+            return  # Pre-defined name
+        while next_opcode in instmap.values():
+            next_opcode += 1
+        instmap[name] = next_opcode
+        next_opcode += 1
+
+    for name in sorted(no_arg):
+        add_instruction(name)
+    for name in sorted(has_arg):
+        add_instruction(name)
+    # For compatibility
+    next_opcode = min_internal
+    for name in sorted(specialized):
+        add_instruction(name)
+    next_opcode = min_instrumented
+    for name in instrumented:
+        add_instruction(name)
+
+    for op, name in enumerate(sorted(analysis.pseudos), 256):
+        instmap[name] = op
+
+    assert 255 not in instmap.values()
+
+    out.emit(
+        """#ifndef Py_OPCODE_IDS_H
+#define Py_OPCODE_IDS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Instruction opcodes for compiled code */
+"""
+    )
+
+    def write_define(name: str, op: int) -> None:
+        out.emit(f"#define {name:<38} {op:>3}\n")
+
+    for op, name in sorted([(op, name) for (name, op) in instmap.items()]):
+        write_define(name, op)
+
+    out.emit("\n")
+    write_define("HAVE_ARGUMENT", len(no_arg))
+    write_define("MIN_INSTRUMENTED_OPCODE", min_instrumented)
+
+    out.emit("\n")
+    out.emit("#ifdef __cplusplus\n")
+    out.emit("}\n")
+    out.emit("#endif\n")
+    out.emit("#endif /* !Py_OPCODE_IDS_H */\n")
+
+
+arg_parser = argparse.ArgumentParser(
+    description="Generate the header file with all opcode IDs.",
+    formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+)
+
+arg_parser.add_argument(
+    "-o", "--output", type=str, help="Generated code", default=DEFAULT_OUTPUT
+)
+
+arg_parser.add_argument(
+    "input", nargs=argparse.REMAINDER, help="Instruction definition file(s)"
+)
+
+if __name__ == "__main__":
+    args = arg_parser.parse_args()
+    if len(args.input) == 0:
+        args.input.append(DEFAULT_INPUT)
+    data = analyze_files(args.input)
+    with open(args.output, "w") as outfile:
+        generate_opcode_header(args.input, data, outfile)
diff --git a/Tools/cases_generator/parser.py b/Tools/cases_generator/parser.py
index 7bf45a350bc84b..12173a61199700 100644
--- a/Tools/cases_generator/parser.py
+++ b/Tools/cases_generator/parser.py
@@ -1,422 +1,55 @@
-"""Parser for bytecodes.inst."""
-
-from dataclasses import dataclass, field
-from typing import NamedTuple, Callable, TypeVar, Literal
-
-import lexer as lx
-from plexer import PLexer
-
-
-P = TypeVar("P", bound="Parser")
-N = TypeVar("N", bound="Node")
-
-
-def contextual(func: Callable[[P], N | None]) -> Callable[[P], N | None]:
-    # Decorator to wrap grammar methods.
-    # Resets position if `func` returns None.
-    def contextual_wrapper(self: P) -> N | None:
-        begin = self.getpos()
-        res = func(self)
-        if res is None:
-            self.setpos(begin)
-            return
-        end = self.getpos()
-        res.context = Context(begin, end, self)
-        return res
-
-    return contextual_wrapper
-
-
-class Context(NamedTuple):
-    begin: int
-    end: int
-    owner: PLexer
-
-    def __repr__(self):
-        return f"<{self.owner.filename}: {self.begin}-{self.end}>"
-
-
-@dataclass
-class Node:
-    context: Context | None = field(init=False, compare=False, default=None)
-
-    @property
-    def text(self) -> str:
-        return self.to_text()
-
-    def to_text(self, dedent: int = 0) -> str:
-        context = self.context
-        if not context:
-            return ""
-        return lx.to_text(self.tokens, dedent)
-
-    @property
-    def tokens(self) -> list[lx.Token]:
-        context = self.context
-        if not context:
-            return []
-        tokens = context.owner.tokens
-        begin = context.begin
-        end = context.end
-        return tokens[begin:end]
-
-
-@dataclass
-class Block(Node):
-    # This just holds a context which has the list of tokens.
-    pass
-
-
-@dataclass
-class StackEffect(Node):
-    name: str
-    type: str = ""  # Optional `:type`
-    cond: str = ""  # Optional `if (cond)`
-    size: str = ""  # Optional `[size]`
-    # Note: size cannot be combined with type or cond
-
-
-@dataclass
-class Expression(Node):
-    size: str
-
-
-@dataclass
-class CacheEffect(Node):
-    name: str
-    size: int
-
-
-@dataclass
-class OpName(Node):
-    name: str
-
-
-InputEffect = StackEffect | CacheEffect
-OutputEffect = StackEffect
-UOp = OpName | CacheEffect
-
-
-@dataclass
-class InstHeader(Node):
-    override: bool
-    register: bool
-    kind: Literal["inst", "op", "legacy"]  # Legacy means no (inputs -- outputs)
-    name: str
-    inputs: list[InputEffect]
-    outputs: list[OutputEffect]
-
-
-@dataclass
-class InstDef(Node):
-    override: bool
-    register: bool
-    kind: Literal["inst", "op", "legacy"]
-    name: str
-    inputs: list[InputEffect]
-    outputs: list[OutputEffect]
-    block: Block
-
-
-@dataclass
-class Super(Node):
-    name: str
-    ops: list[OpName]
-
-
-@dataclass
-class Macro(Node):
-    name: str
-    uops: list[UOp]
-
-
-@dataclass
-class Family(Node):
-    name: str
-    size: str  # Variable giving the cache size in code units
-    members: list[str]
-
-
-class Parser(PLexer):
-    @contextual
-    def definition(self) -> InstDef | Super | Macro | Family | None:
-        if inst := self.inst_def():
-            return inst
-        if super := self.super_def():
-            return super
-        if macro := self.macro_def():
-            return macro
-        if family := self.family_def():
-            return family
-
-    @contextual
-    def inst_def(self) -> InstDef | None:
-        if hdr := self.inst_header():
-            if block := self.block():
-                return InstDef(
-                    hdr.override, hdr.register, hdr.kind, hdr.name, hdr.inputs, hdr.outputs, block
-                )
-            raise self.make_syntax_error("Expected block")
-        return None
-
-    @contextual
-    def inst_header(self) -> InstHeader | None:
-        # [override] inst(NAME)
-        #   | [override] [register] inst(NAME, (inputs -- outputs))
-        #   | [override] [register] op(NAME, (inputs -- outputs))
-        # TODO: Make INST a keyword in the lexer.
-        override = bool(self.expect(lx.OVERRIDE))
-        register = bool(self.expect(lx.REGISTER))
-        if (tkn := self.expect(lx.IDENTIFIER)) and (kind := tkn.text) in ("inst", "op"):
-            if self.expect(lx.LPAREN) and (tkn := self.expect(lx.IDENTIFIER)):
-                name = tkn.text
-                if self.expect(lx.COMMA):
-                    inp, outp = self.io_effect()
-                    if self.expect(lx.RPAREN):
-                        if (tkn := self.peek()) and tkn.kind == lx.LBRACE:
-                            return InstHeader(override, register, kind, name, inp, outp)
-                elif self.expect(lx.RPAREN) and kind == "inst":
-                    # No legacy stack effect if kind is "op".
-                    return InstHeader(override, register, "legacy", name, [], [])
-        return None
-
-    def io_effect(self) -> tuple[list[InputEffect], list[OutputEffect]]:
-        # '(' [inputs] '--' [outputs] ')'
-        if self.expect(lx.LPAREN):
-            inputs = self.inputs() or []
-            if self.expect(lx.MINUSMINUS):
-                outputs = self.outputs() or []
-                if self.expect(lx.RPAREN):
-                    return inputs, outputs
-        raise self.make_syntax_error("Expected stack effect")
-
-    def inputs(self) -> list[InputEffect] | None:
-        # input (',' input)*
-        here = self.getpos()
-        if inp := self.input():
-            near = self.getpos()
-            if self.expect(lx.COMMA):
-                if rest := self.inputs():
-                    return [inp] + rest
-            self.setpos(near)
-            return [inp]
-        self.setpos(here)
-        return None
-
-    @contextual
-    def input(self) -> InputEffect | None:
-        return self.cache_effect() or self.stack_effect()
-
-    def outputs(self) -> list[OutputEffect] | None:
-        # output (, output)*
-        here = self.getpos()
-        if outp := self.output():
-            near = self.getpos()
-            if self.expect(lx.COMMA):
-                if rest := self.outputs():
-                    return [outp] + rest
-            self.setpos(near)
-            return [outp]
-        self.setpos(here)
-        return None
-
-    @contextual
-    def output(self) -> OutputEffect | None:
-        return self.stack_effect()
-
-    @contextual
-    def cache_effect(self) -> CacheEffect | None:
-        # IDENTIFIER '/' NUMBER
-        if tkn := self.expect(lx.IDENTIFIER):
-            if self.expect(lx.DIVIDE):
-                num = self.require(lx.NUMBER).text
-                try:
-                    size = int(num)
-                except ValueError:
-                    raise self.make_syntax_error(f"Expected integer, got {num!r}")
-                else:
-                    return CacheEffect(tkn.text, size)
-
-    @contextual
-    def stack_effect(self) -> StackEffect | None:
-        #   IDENTIFIER [':' IDENTIFIER] ['if' '(' expression ')']
-        # | IDENTIFIER '[' expression ']'
-        if tkn := self.expect(lx.IDENTIFIER):
-            type_text = ""
-            if self.expect(lx.COLON):
-                type_text = self.require(lx.IDENTIFIER).text.strip()
-            cond_text = ""
-            if self.expect(lx.IF):
-                self.require(lx.LPAREN)
-                if not (cond := self.expression()):
-                    raise self.make_syntax_error("Expected condition")
-                self.require(lx.RPAREN)
-                cond_text = cond.text.strip()
-            size_text = ""
-            if self.expect(lx.LBRACKET):
-                if type_text or cond_text:
-                    raise self.make_syntax_error("Unexpected [")
-                if not (size := self.expression()):
-                    raise self.make_syntax_error("Expected expression")
-                self.require(lx.RBRACKET)
-                type_text = "PyObject **"
-                size_text = size.text.strip()
-            return StackEffect(tkn.text, type_text, cond_text, size_text)
-
-    @contextual
-    def expression(self) -> Expression | None:
-        tokens: list[lx.Token] = []
-        level = 1
-        while tkn := self.peek():
-            if tkn.kind in (lx.LBRACKET, lx.LPAREN):
-                level += 1
-            elif tkn.kind in (lx.RBRACKET, lx.RPAREN):
-                level -= 1
-                if level == 0:
-                    break
-            tokens.append(tkn)
-            self.next()
-        if not tokens:
-            return None
-        return Expression(lx.to_text(tokens).strip())
-
-    @contextual
-    def super_def(self) -> Super | None:
-        if (tkn := self.expect(lx.IDENTIFIER)) and tkn.text == "super":
-            if self.expect(lx.LPAREN):
-                if tkn := self.expect(lx.IDENTIFIER):
-                    if self.expect(lx.RPAREN):
-                        if self.expect(lx.EQUALS):
-                            if ops := self.ops():
-                                self.require(lx.SEMI)
-                                res = Super(tkn.text, ops)
-                                return res
-
-    def ops(self) -> list[OpName] | None:
-        if op := self.op():
-            ops = [op]
-            while self.expect(lx.PLUS):
-                if op := self.op():
-                    ops.append(op)
-            return ops
-
-    @contextual
-    def op(self) -> OpName | None:
-        if tkn := self.expect(lx.IDENTIFIER):
-            return OpName(tkn.text)
-
-    @contextual
-    def macro_def(self) -> Macro | None:
-        if (tkn := self.expect(lx.IDENTIFIER)) and tkn.text == "macro":
-            if self.expect(lx.LPAREN):
-                if tkn := self.expect(lx.IDENTIFIER):
-                    if self.expect(lx.RPAREN):
-                        if self.expect(lx.EQUALS):
-                            if uops := self.uops():
-                                self.require(lx.SEMI)
-                                res = Macro(tkn.text, uops)
-                                return res
-
-    def uops(self) -> list[UOp] | None:
-        if uop := self.uop():
-            uops = [uop]
-            while self.expect(lx.PLUS):
-                if uop := self.uop():
-                    uops.append(uop)
-                else:
-                    raise self.make_syntax_error("Expected op name or cache effect")
-            return uops
-
-    @contextual
-    def uop(self) -> UOp | None:
-        if tkn := self.expect(lx.IDENTIFIER):
-            if self.expect(lx.DIVIDE):
-                if num := self.expect(lx.NUMBER):
-                    try:
-                        size = int(num.text)
-                    except ValueError:
-                        raise self.make_syntax_error(
-                            f"Expected integer, got {num.text!r}"
-                        )
-                    else:
-                        return CacheEffect(tkn.text, size)
-                raise self.make_syntax_error("Expected integer")
-            else:
-                return OpName(tkn.text)
-
-    @contextual
-    def family_def(self) -> Family | None:
-        if (tkn := self.expect(lx.IDENTIFIER)) and tkn.text == "family":
-            size = None
-            if self.expect(lx.LPAREN):
-                if tkn := self.expect(lx.IDENTIFIER):
-                    if self.expect(lx.COMMA):
-                        if not (size := self.expect(lx.IDENTIFIER)):
-                            raise self.make_syntax_error("Expected identifier")
-                    if self.expect(lx.RPAREN):
-                        if self.expect(lx.EQUALS):
-                            if not self.expect(lx.LBRACE):
-                                raise self.make_syntax_error("Expected {")
-                            if members := self.members():
-                                if self.expect(lx.RBRACE) and self.expect(lx.SEMI):
-                                    return Family(
-                                        tkn.text, size.text if size else "", members
-                                    )
-        return None
-
-    def members(self) -> list[str] | None:
-        here = self.getpos()
-        if tkn := self.expect(lx.IDENTIFIER):
-            members = [tkn.text]
-            while self.expect(lx.COMMA):
-                if tkn := self.expect(lx.IDENTIFIER):
-                    members.append(tkn.text)
-                else:
-                    break
-            peek = self.peek()
-            if not peek or peek.kind != lx.RBRACE:
-                raise self.make_syntax_error("Expected comma or right paren")
-            return members
-        self.setpos(here)
-        return None
-
-    @contextual
-    def block(self) -> Block | None:
-        if self.c_blob():
-            return Block()
-
-    def c_blob(self) -> list[lx.Token]:
-        tokens: list[lx.Token] = []
-        level = 0
-        while tkn := self.next(raw=True):
-            tokens.append(tkn)
-            if tkn.kind in (lx.LBRACE, lx.LPAREN, lx.LBRACKET):
-                level += 1
-            elif tkn.kind in (lx.RBRACE, lx.RPAREN, lx.RBRACKET):
-                level -= 1
-                if level <= 0:
-                    break
-        return tokens
-
-
-if __name__ == "__main__":
-    import sys
-
-    if sys.argv[1:]:
-        filename = sys.argv[1]
-        if filename == "-c" and sys.argv[2:]:
-            src = sys.argv[2]
-            filename = "<string>"
+from parsing import (
+    InstDef,
+    Macro,
+    Pseudo,
+    Family,
+    Parser,
+    Context,
+    CacheEffect,
+    StackEffect,
+    OpName,
+    AstNode,
+)
+from formatting import prettify_filename
+
+
+BEGIN_MARKER = "// BEGIN BYTECODES //"
+END_MARKER = "// END BYTECODES //"
+
+
+def parse_files(filenames: list[str]) -> list[AstNode]:
+    result: list[AstNode] = []
+    for filename in filenames:
+        with open(filename) as file:
+            src = file.read()
+
+        psr = Parser(src, filename=prettify_filename(filename))
+
+        # Skip until begin marker
+        while tkn := psr.next(raw=True):
+            if tkn.text == BEGIN_MARKER:
+                break
         else:
-            with open(filename) as f:
-                src = f.read()
-            srclines = src.splitlines()
-            begin = srclines.index("// BEGIN BYTECODES //")
-            end = srclines.index("// END BYTECODES //")
-            src = "\n".join(srclines[begin + 1 : end])
-    else:
-        filename = "<default>"
-        src = "if (x) { x.foo; // comment\n}"
-    parser = Parser(src, filename)
-    x = parser.definition()
-    print(x)
+            raise psr.make_syntax_error(
+                f"Couldn't find {BEGIN_MARKER!r} in {psr.filename}"
+            )
+        start = psr.getpos()
+
+        # Find end marker, then delete everything after it
+        while tkn := psr.next(raw=True):
+            if tkn.text == END_MARKER:
+                break
+        del psr.tokens[psr.getpos() - 1 :]
+
+        # Parse from start
+        psr.setpos(start)
+        thing_first_token = psr.peek()
+        while node := psr.definition():
+            assert node is not None
+            result.append(node)  # type: ignore[arg-type]
+        if not psr.eof():
+            psr.backup()
+            raise psr.make_syntax_error(
+                f"Extra stuff at the end of {filename}", psr.next(True)
+            )
+    return result
diff --git a/Tools/cases_generator/parsing.py b/Tools/cases_generator/parsing.py
new file mode 100644
index 00000000000000..60c185dcef58e9
--- /dev/null
+++ b/Tools/cases_generator/parsing.py
@@ -0,0 +1,470 @@
+"""Parser for bytecodes.inst."""
+
+from dataclasses import dataclass, field
+from typing import NamedTuple, Callable, TypeVar, Literal, cast
+
+import lexer as lx
+from plexer import PLexer
+
+
+P = TypeVar("P", bound="Parser")
+N = TypeVar("N", bound="Node")
+
+
+def contextual(func: Callable[[P], N | None]) -> Callable[[P], N | None]:
+    # Decorator to wrap grammar methods.
+    # Resets position if `func` returns None.
+    def contextual_wrapper(self: P) -> N | None:
+        begin = self.getpos()
+        res = func(self)
+        if res is None:
+            self.setpos(begin)
+            return None
+        end = self.getpos()
+        res.context = Context(begin, end, self)
+        return res
+
+    return contextual_wrapper
+
+
+class Context(NamedTuple):
+    begin: int
+    end: int
+    owner: PLexer
+
+    def __repr__(self) -> str:
+        return f"<{self.owner.filename}: {self.begin}-{self.end}>"
+
+
+@dataclass
+class Node:
+    context: Context | None = field(init=False, compare=False, default=None)
+
+    @property
+    def text(self) -> str:
+        return self.to_text()
+
+    def to_text(self, dedent: int = 0) -> str:
+        context = self.context
+        if not context:
+            return ""
+        return lx.to_text(self.tokens, dedent)
+
+    @property
+    def tokens(self) -> list[lx.Token]:
+        context = self.context
+        if not context:
+            return []
+        tokens = context.owner.tokens
+        begin = context.begin
+        end = context.end
+        return tokens[begin:end]
+
+
+@dataclass
+class Block(Node):
+    # This just holds a context which has the list of tokens.
+    pass
+
+
+@dataclass
+class StackEffect(Node):
+    name: str = field(compare=False)  # __eq__ only uses type, cond, size
+    type: str = ""  # Optional `:type`
+    cond: str = ""  # Optional `if (cond)`
+    size: str = ""  # Optional `[size]`
+    # Note: size cannot be combined with type or cond
+
+    def __repr__(self) -> str:
+        items = [self.name, self.type, self.cond, self.size]
+        while items and items[-1] == "":
+            del items[-1]
+        return f"StackEffect({', '.join(repr(item) for item in items)})"
+
+
+@dataclass
+class Expression(Node):
+    size: str
+
+
+@dataclass
+class CacheEffect(Node):
+    name: str
+    size: int
+
+
+@dataclass
+class OpName(Node):
+    name: str
+
+
+InputEffect = StackEffect | CacheEffect
+OutputEffect = StackEffect
+UOp = OpName | CacheEffect
+
+
+@dataclass
+class InstHeader(Node):
+    annotations: list[str]
+    kind: Literal["inst", "op"]
+    name: str
+    inputs: list[InputEffect]
+    outputs: list[OutputEffect]
+
+
+@dataclass
+class InstDef(Node):
+    annotations: list[str]
+    kind: Literal["inst", "op"]
+    name: str
+    inputs: list[InputEffect]
+    outputs: list[OutputEffect]
+    block: Block
+
+
+@dataclass
+class Macro(Node):
+    name: str
+    uops: list[UOp]
+
+
+@dataclass
+class Family(Node):
+    name: str
+    size: str  # Variable giving the cache size in code units
+    members: list[str]
+
+
+@dataclass
+class Pseudo(Node):
+    name: str
+    flags: list[str]   # instr flags to set on the pseudo instruction
+    targets: list[str] # opcodes this can be replaced by
+
+AstNode = InstDef | Macro | Pseudo | Family
+
+class Parser(PLexer):
+    @contextual
+    def definition(self) -> AstNode | None:
+        if macro := self.macro_def():
+            return macro
+        if family := self.family_def():
+            return family
+        if pseudo := self.pseudo_def():
+            return pseudo
+        if inst := self.inst_def():
+            return inst
+        return None
+
+    @contextual
+    def inst_def(self) -> InstDef | None:
+        if hdr := self.inst_header():
+            if block := self.block():
+                return InstDef(
+                    hdr.annotations,
+                    hdr.kind,
+                    hdr.name,
+                    hdr.inputs,
+                    hdr.outputs,
+                    block,
+                )
+            raise self.make_syntax_error("Expected block")
+        return None
+
+    @contextual
+    def inst_header(self) -> InstHeader | None:
+        # annotation* inst(NAME, (inputs -- outputs))
+        # | annotation* op(NAME, (inputs -- outputs))
+        annotations = []
+        while anno := self.expect(lx.ANNOTATION):
+            annotations.append(anno.text)
+        tkn = self.expect(lx.INST)
+        if not tkn:
+            tkn = self.expect(lx.OP)
+        if tkn:
+            kind = cast(Literal["inst", "op"], tkn.text)
+            if self.expect(lx.LPAREN) and (tkn := self.expect(lx.IDENTIFIER)):
+                name = tkn.text
+                if self.expect(lx.COMMA):
+                    inp, outp = self.io_effect()
+                    if self.expect(lx.RPAREN):
+                        if (tkn := self.peek()) and tkn.kind == lx.LBRACE:
+                            return InstHeader(annotations, kind, name, inp, outp)
+        return None
+
+    def io_effect(self) -> tuple[list[InputEffect], list[OutputEffect]]:
+        # '(' [inputs] '--' [outputs] ')'
+        if self.expect(lx.LPAREN):
+            inputs = self.inputs() or []
+            if self.expect(lx.MINUSMINUS):
+                outputs = self.outputs() or []
+                if self.expect(lx.RPAREN):
+                    return inputs, outputs
+        raise self.make_syntax_error("Expected stack effect")
+
+    def inputs(self) -> list[InputEffect] | None:
+        # input (',' input)*
+        here = self.getpos()
+        if inp := self.input():
+            inp = cast(InputEffect, inp)
+            near = self.getpos()
+            if self.expect(lx.COMMA):
+                if rest := self.inputs():
+                    return [inp] + rest
+            self.setpos(near)
+            return [inp]
+        self.setpos(here)
+        return None
+
+    @contextual
+    def input(self) -> InputEffect | None:
+        return self.cache_effect() or self.stack_effect()
+
+    def outputs(self) -> list[OutputEffect] | None:
+        # output (, output)*
+        here = self.getpos()
+        if outp := self.output():
+            near = self.getpos()
+            if self.expect(lx.COMMA):
+                if rest := self.outputs():
+                    return [outp] + rest
+            self.setpos(near)
+            return [outp]
+        self.setpos(here)
+        return None
+
+    @contextual
+    def output(self) -> OutputEffect | None:
+        return self.stack_effect()
+
+    @contextual
+    def cache_effect(self) -> CacheEffect | None:
+        # IDENTIFIER '/' NUMBER
+        if tkn := self.expect(lx.IDENTIFIER):
+            if self.expect(lx.DIVIDE):
+                num = self.require(lx.NUMBER).text
+                try:
+                    size = int(num)
+                except ValueError:
+                    raise self.make_syntax_error(f"Expected integer, got {num!r}")
+                else:
+                    return CacheEffect(tkn.text, size)
+        return None
+
+    @contextual
+    def stack_effect(self) -> StackEffect | None:
+        #   IDENTIFIER [':' IDENTIFIER [TIMES]] ['if' '(' expression ')']
+        # | IDENTIFIER '[' expression ']'
+        if tkn := self.expect(lx.IDENTIFIER):
+            type_text = ""
+            if self.expect(lx.COLON):
+                type_text = self.require(lx.IDENTIFIER).text.strip()
+                if self.expect(lx.TIMES):
+                    type_text += " *"
+            cond_text = ""
+            if self.expect(lx.IF):
+                self.require(lx.LPAREN)
+                if not (cond := self.expression()):
+                    raise self.make_syntax_error("Expected condition")
+                self.require(lx.RPAREN)
+                cond_text = cond.text.strip()
+            size_text = ""
+            if self.expect(lx.LBRACKET):
+                if type_text or cond_text:
+                    raise self.make_syntax_error("Unexpected [")
+                if not (size := self.expression()):
+                    raise self.make_syntax_error("Expected expression")
+                self.require(lx.RBRACKET)
+                type_text = "PyObject **"
+                size_text = size.text.strip()
+            return StackEffect(tkn.text, type_text, cond_text, size_text)
+        return None
+
+    @contextual
+    def expression(self) -> Expression | None:
+        tokens: list[lx.Token] = []
+        level = 1
+        while tkn := self.peek():
+            if tkn.kind in (lx.LBRACKET, lx.LPAREN):
+                level += 1
+            elif tkn.kind in (lx.RBRACKET, lx.RPAREN):
+                level -= 1
+                if level == 0:
+                    break
+            tokens.append(tkn)
+            self.next()
+        if not tokens:
+            return None
+        return Expression(lx.to_text(tokens).strip())
+
+    # def ops(self) -> list[OpName] | None:
+    #     if op := self.op():
+    #         ops = [op]
+    #         while self.expect(lx.PLUS):
+    #             if op := self.op():
+    #                 ops.append(op)
+    #         return ops
+
+    @contextual
+    def op(self) -> OpName | None:
+        if tkn := self.expect(lx.IDENTIFIER):
+            return OpName(tkn.text)
+        return None
+
+    @contextual
+    def macro_def(self) -> Macro | None:
+        if tkn := self.expect(lx.MACRO):
+            if self.expect(lx.LPAREN):
+                if tkn := self.expect(lx.IDENTIFIER):
+                    if self.expect(lx.RPAREN):
+                        if self.expect(lx.EQUALS):
+                            if uops := self.uops():
+                                self.require(lx.SEMI)
+                                res = Macro(tkn.text, uops)
+                                return res
+        return None
+
+    def uops(self) -> list[UOp] | None:
+        if uop := self.uop():
+            uop = cast(UOp, uop)
+            uops = [uop]
+            while self.expect(lx.PLUS):
+                if uop := self.uop():
+                    uop = cast(UOp, uop)
+                    uops.append(uop)
+                else:
+                    raise self.make_syntax_error("Expected op name or cache effect")
+            return uops
+        return None
+
+    @contextual
+    def uop(self) -> UOp | None:
+        if tkn := self.expect(lx.IDENTIFIER):
+            if self.expect(lx.DIVIDE):
+                if num := self.expect(lx.NUMBER):
+                    try:
+                        size = int(num.text)
+                    except ValueError:
+                        raise self.make_syntax_error(
+                            f"Expected integer, got {num.text!r}"
+                        )
+                    else:
+                        return CacheEffect(tkn.text, size)
+                raise self.make_syntax_error("Expected integer")
+            else:
+                return OpName(tkn.text)
+        return None
+
+    @contextual
+    def family_def(self) -> Family | None:
+        if (tkn := self.expect(lx.IDENTIFIER)) and tkn.text == "family":
+            size = None
+            if self.expect(lx.LPAREN):
+                if tkn := self.expect(lx.IDENTIFIER):
+                    if self.expect(lx.COMMA):
+                        if not (size := self.expect(lx.IDENTIFIER)):
+                            if not (size := self.expect(lx.NUMBER)):
+                                raise self.make_syntax_error("Expected identifier or number")
+                    if self.expect(lx.RPAREN):
+                        if self.expect(lx.EQUALS):
+                            if not self.expect(lx.LBRACE):
+                                raise self.make_syntax_error("Expected {")
+                            if members := self.members():
+                                if self.expect(lx.RBRACE) and self.expect(lx.SEMI):
+                                    return Family(
+                                        tkn.text, size.text if size else "", members
+                                    )
+        return None
+
+    def flags(self) -> list[str]:
+        here = self.getpos()
+        if self.expect(lx.LPAREN):
+            if tkn := self.expect(lx.IDENTIFIER):
+                flags = [tkn.text]
+                while self.expect(lx.COMMA):
+                    if tkn := self.expect(lx.IDENTIFIER):
+                        flags.append(tkn.text)
+                    else:
+                        break
+                if not self.expect(lx.RPAREN):
+                    raise self.make_syntax_error("Expected comma or right paren")
+                return flags
+        self.setpos(here)
+        return []
+
+    @contextual
+    def pseudo_def(self) -> Pseudo | None:
+        if (tkn := self.expect(lx.IDENTIFIER)) and tkn.text == "pseudo":
+            size = None
+            if self.expect(lx.LPAREN):
+                if tkn := self.expect(lx.IDENTIFIER):
+                    if self.expect(lx.COMMA):
+                        flags = self.flags()
+                    else:
+                        flags = []
+                    if self.expect(lx.RPAREN):
+                        if self.expect(lx.EQUALS):
+                            if not self.expect(lx.LBRACE):
+                                raise self.make_syntax_error("Expected {")
+                            if members := self.members():
+                                if self.expect(lx.RBRACE) and self.expect(lx.SEMI):
+                                    return Pseudo(tkn.text, flags, members)
+        return None
+
+    def members(self) -> list[str] | None:
+        here = self.getpos()
+        if tkn := self.expect(lx.IDENTIFIER):
+            members = [tkn.text]
+            while self.expect(lx.COMMA):
+                if tkn := self.expect(lx.IDENTIFIER):
+                    members.append(tkn.text)
+                else:
+                    break
+            peek = self.peek()
+            if not peek or peek.kind != lx.RBRACE:
+                raise self.make_syntax_error("Expected comma or right paren")
+            return members
+        self.setpos(here)
+        return None
+
+    @contextual
+    def block(self) -> Block | None:
+        if self.c_blob():
+            return Block()
+        return None
+
+    def c_blob(self) -> list[lx.Token]:
+        tokens: list[lx.Token] = []
+        level = 0
+        while tkn := self.next(raw=True):
+            tokens.append(tkn)
+            if tkn.kind in (lx.LBRACE, lx.LPAREN, lx.LBRACKET):
+                level += 1
+            elif tkn.kind in (lx.RBRACE, lx.RPAREN, lx.RBRACKET):
+                level -= 1
+                if level <= 0:
+                    break
+        return tokens
+
+
+if __name__ == "__main__":
+    import sys
+
+    if sys.argv[1:]:
+        filename = sys.argv[1]
+        if filename == "-c" and sys.argv[2:]:
+            src = sys.argv[2]
+            filename = "<string>"
+        else:
+            with open(filename, "r") as f:
+                src = f.read()
+            srclines = src.splitlines()
+            begin = srclines.index("// BEGIN BYTECODES //")
+            end = srclines.index("// END BYTECODES //")
+            src = "\n".join(srclines[begin + 1 : end])
+    else:
+        filename = "<default>"
+        src = "if (x) { x.foo; // comment\n}"
+    parser = Parser(src, filename)
+    x = parser.definition()
+    print(x)
diff --git a/Tools/cases_generator/plexer.py b/Tools/cases_generator/plexer.py
index a73254ed5b1daa..cb6c5375866490 100644
--- a/Tools/cases_generator/plexer.py
+++ b/Tools/cases_generator/plexer.py
@@ -1,4 +1,5 @@
 import lexer as lx
+
 Token = lx.Token
 
 
@@ -64,7 +65,9 @@ def require(self, kind: str) -> Token:
         tkn = self.next()
         if tkn is not None and tkn.kind == kind:
             return tkn
-        raise self.make_syntax_error(f"Expected {kind!r} but got {tkn and tkn.text!r}", tkn)
+        raise self.make_syntax_error(
+            f"Expected {kind!r} but got {tkn and tkn.text!r}", tkn
+        )
 
     def extract_line(self, lineno: int) -> str:
         # Return source line `lineno` (1-based)
@@ -73,18 +76,20 @@ def extract_line(self, lineno: int) -> str:
             return ""
         return lines[lineno - 1]
 
-    def make_syntax_error(self, message: str, tkn: Token|None = None) -> SyntaxError:
+    def make_syntax_error(self, message: str, tkn: Token | None = None) -> SyntaxError:
         # Construct a SyntaxError instance from message and token
         if tkn is None:
             tkn = self.peek()
         if tkn is None:
             tkn = self.tokens[-1]
-        return lx.make_syntax_error(message,
-            self.filename, tkn.line, tkn.column, self.extract_line(tkn.line))
+        return lx.make_syntax_error(
+            message, self.filename, tkn.line, tkn.column, self.extract_line(tkn.line)
+        )
 
 
 if __name__ == "__main__":
     import sys
+
     if sys.argv[1:]:
         filename = sys.argv[1]
         if filename == "-c" and sys.argv[2:]:
diff --git a/Tools/cases_generator/stack.py b/Tools/cases_generator/stack.py
new file mode 100644
index 00000000000000..9cd8e1a3b2edf8
--- /dev/null
+++ b/Tools/cases_generator/stack.py
@@ -0,0 +1,81 @@
+import sys
+from analyzer import StackItem
+from dataclasses import dataclass
+from formatting import maybe_parenthesize
+
+
+def var_size(var: StackItem) -> str:
+    if var.condition:
+        # Special case simplification
+        if var.condition == "oparg & 1" and var.size == "1":
+            return f"({var.condition})"
+        else:
+            return f"(({var.condition}) ? {var.size} : 0)"
+    else:
+        return var.size
+
+
+class StackOffset:
+    "The stack offset of the virtual base of the stack from the physical stack pointer"
+
+    def __init__(self) -> None:
+        self.popped: list[str] = []
+        self.pushed: list[str] = []
+
+    def pop(self, item: StackItem) -> None:
+        self.popped.append(var_size(item))
+
+    def push(self, item: StackItem) -> None:
+        self.pushed.append(var_size(item))
+
+    def simplify(self) -> None:
+        "Remove matching values from both the popped and pushed list"
+        if not self.popped or not self.pushed:
+            return
+        # Sort the list so the lexically largest element is last.
+        popped = sorted(self.popped)
+        pushed = sorted(self.pushed)
+        self.popped = []
+        self.pushed = []
+        while popped and pushed:
+            pop = popped.pop()
+            push = pushed.pop()
+            if pop == push:
+                pass
+            elif pop > push:
+                # if pop > push, there can be no element in pushed matching pop.
+                self.popped.append(pop)
+                pushed.append(push)
+            else:
+                self.pushed.append(push)
+                popped.append(pop)
+        self.popped.extend(popped)
+        self.pushed.extend(pushed)
+
+    def to_c(self) -> str:
+        self.simplify()
+        int_offset = 0
+        symbol_offset = ""
+        for item in self.popped:
+            try:
+                int_offset -= int(item)
+            except ValueError:
+                symbol_offset += f" - {maybe_parenthesize(item)}"
+        for item in self.pushed:
+            try:
+                int_offset += int(item)
+            except ValueError:
+                symbol_offset += f" + {maybe_parenthesize(item)}"
+        if symbol_offset and not int_offset:
+            res = symbol_offset
+        else:
+            res = f"{int_offset}{symbol_offset}"
+        if res.startswith(" + "):
+            res = res[3:]
+        if res.startswith(" - "):
+            res = "-" + res[3:]
+        return res
+
+    def clear(self) -> None:
+        self.popped = []
+        self.pushed = []
diff --git a/Tools/cases_generator/stacking.py b/Tools/cases_generator/stacking.py
new file mode 100644
index 00000000000000..123e38c524f49d
--- /dev/null
+++ b/Tools/cases_generator/stacking.py
@@ -0,0 +1,534 @@
+import dataclasses
+import typing
+
+from flags import variable_used_unspecialized
+from formatting import (
+    Formatter,
+    UNUSED,
+    maybe_parenthesize,
+    parenthesize_cond,
+)
+from instructions import (
+    ActiveCacheEffect,
+    Instruction,
+    MacroInstruction,
+    Component,
+    Tiers,
+    TIER_ONE,
+)
+from parsing import StackEffect, CacheEffect, Family
+
+
+@dataclasses.dataclass
+class StackOffset:
+    """Represent the stack offset for a PEEK or POKE.
+
+    - At stack_pointer[0], deep and high are both empty.
+      (Note that that is an invalid stack reference.)
+    - Below stack top, only deep is non-empty.
+    - Above stack top, only high is non-empty.
+    - In complex cases, both deep and high may be non-empty.
+
+    All this would be much simpler if all stack entries were the same
+    size, but with conditional and array effects, they aren't.
+    The offsets are each represented by a list of StackEffect objects.
+    The name in the StackEffects is unused.
+    """
+
+    deep: list[StackEffect] = dataclasses.field(default_factory=list)
+    high: list[StackEffect] = dataclasses.field(default_factory=list)
+
+    def clone(self) -> "StackOffset":
+        return StackOffset(list(self.deep), list(self.high))
+
+    def negate(self) -> "StackOffset":
+        return StackOffset(list(self.high), list(self.deep))
+
+    def deeper(self, eff: StackEffect) -> None:
+        if eff in self.high:
+            self.high.remove(eff)
+        else:
+            self.deep.append(eff)
+
+    def higher(self, eff: StackEffect) -> None:
+        if eff in self.deep:
+            self.deep.remove(eff)
+        else:
+            self.high.append(eff)
+
+    def as_terms(self) -> list[tuple[str, str]]:
+        num = 0
+        terms: list[tuple[str, str]] = []
+        for eff in self.deep:
+            if eff.size:
+                terms.append(("-", maybe_parenthesize(eff.size)))
+            elif eff.cond and eff.cond not in ("0", "1"):
+                terms.append(("-", f"({parenthesize_cond(eff.cond)} ? 1 : 0)"))
+            elif eff.cond != "0":
+                num -= 1
+        for eff in self.high:
+            if eff.size:
+                terms.append(("+", maybe_parenthesize(eff.size)))
+            elif eff.cond and eff.cond not in ("0", "1"):
+                terms.append(("+", f"({parenthesize_cond(eff.cond)} ? 1 : 0)"))
+            elif eff.cond != "0":
+                num += 1
+        if num < 0:
+            terms.insert(0, ("-", str(-num)))
+        elif num > 0:
+            terms.append(("+", str(num)))
+        return terms
+
+    def as_index(self) -> str:
+        terms = self.as_terms()
+        return make_index(terms)
+
+    def equivalent_to(self, other: "StackOffset") -> bool:
+        if self.deep == other.deep and self.high == other.high:
+            return True
+        deep = list(self.deep)
+        for x in other.deep:
+            try:
+                deep.remove(x)
+            except ValueError:
+                return False
+        if deep:
+            return False
+        high = list(self.high)
+        for x in other.high:
+            try:
+                high.remove(x)
+            except ValueError:
+                return False
+        if high:
+            return False
+        return True
+
+
+def make_index(terms: list[tuple[str, str]]) -> str:
+    # Produce an index expression from the terms honoring PEP 8,
+    # surrounding binary ops with spaces but not unary minus
+    index = ""
+    for sign, term in terms:
+        if index:
+            index += f" {sign} {term}"
+        elif sign == "+":
+            index = term
+        else:
+            index = sign + term
+    return index or "0"
+
+
+@dataclasses.dataclass
+class StackItem:
+    offset: StackOffset
+    effect: StackEffect
+
+    def as_variable(self, lax: bool = False) -> str:
+        """Return e.g. stack_pointer[-1]."""
+        terms = self.offset.as_terms()
+        if self.effect.size:
+            terms.insert(0, ("+", "stack_pointer"))
+        index = make_index(terms)
+        if self.effect.size:
+            res = index
+        else:
+            res = f"stack_pointer[{index}]"
+        if not lax:
+            # Check that we're not reading or writing above stack top.
+            # Skip this for output variable initialization (lax=True).
+            assert (
+                self.effect in self.offset.deep and not self.offset.high
+            ), f"Push or pop above current stack level: {res}"
+        return res
+
+    def as_stack_effect(self, lax: bool = False) -> StackEffect:
+        return StackEffect(
+            self.as_variable(lax=lax),
+            self.effect.type if self.effect.size else "",
+            self.effect.cond,
+            self.effect.size,
+        )
+
+
+@dataclasses.dataclass
+class CopyItem:
+    src: StackItem
+    dst: StackItem
+
+
+class EffectManager:
+    """Manage stack effects and offsets for an instruction."""
+
+    instr: Instruction
+    active_caches: list[ActiveCacheEffect]
+    peeks: list[StackItem]
+    pokes: list[StackItem]
+    copies: list[CopyItem]  # See merge()
+    # Track offsets from stack pointer
+    min_offset: StackOffset
+    final_offset: StackOffset
+    # Link to previous manager
+    pred: "EffectManager | None" = None
+
+    def __init__(
+        self,
+        instr: Instruction,
+        active_caches: list[ActiveCacheEffect],
+        pred: "EffectManager | None" = None,
+    ):
+        self.instr = instr
+        self.active_caches = active_caches
+        self.peeks = []
+        self.pokes = []
+        self.copies = []
+        self.final_offset = pred.final_offset.clone() if pred else StackOffset()
+        for eff in reversed(instr.input_effects):
+            self.final_offset.deeper(eff)
+            self.peeks.append(StackItem(offset=self.final_offset.clone(), effect=eff))
+        self.min_offset = self.final_offset.clone()
+        for eff in instr.output_effects:
+            self.pokes.append(StackItem(offset=self.final_offset.clone(), effect=eff))
+            self.final_offset.higher(eff)
+
+        self.pred = pred
+        while pred:
+            # Replace push(x) + pop(y) with copy(x, y).
+            # Check that the sources and destinations are disjoint.
+            sources: set[str] = set()
+            destinations: set[str] = set()
+            while (
+                pred.pokes
+                and self.peeks
+                and pred.pokes[-1].effect == self.peeks[0].effect
+            ):
+                src = pred.pokes.pop(-1)
+                dst = self.peeks.pop(0)
+                assert src.offset.equivalent_to(dst.offset), (src, dst)
+                pred.final_offset.deeper(src.effect)
+                if dst.effect.name != src.effect.name:
+                    if dst.effect.name != UNUSED:
+                        destinations.add(dst.effect.name)
+                    if src.effect.name != UNUSED:
+                        sources.add(src.effect.name)
+                self.copies.append(CopyItem(src, dst))
+            # TODO: Turn this into an error (pass an Analyzer instance?)
+            assert sources & destinations == set(), (
+                pred.instr.name,
+                self.instr.name,
+                sources,
+                destinations,
+            )
+            # See if we can get more copies of a earlier predecessor.
+            if self.peeks and not pred.pokes and not pred.peeks:
+                pred = pred.pred
+            else:
+                pred = None  # Break
+
+        # Fix up patterns of copies through UNUSED,
+        # e.g. cp(a, UNUSED) + cp(UNUSED, b) -> cp(a, b).
+        if any(copy.src.effect.name == UNUSED for copy in self.copies):
+            pred = self.pred
+            while pred is not None:
+                for copy in self.copies:
+                    if copy.src.effect.name == UNUSED:
+                        for pred_copy in pred.copies:
+                            if pred_copy.dst == copy.src:
+                                copy.src = pred_copy.src
+                                break
+                pred = pred.pred
+
+    def adjust_deeper(self, eff: StackEffect) -> None:
+        for peek in self.peeks:
+            peek.offset.deeper(eff)
+        for poke in self.pokes:
+            poke.offset.deeper(eff)
+        for copy in self.copies:
+            copy.src.offset.deeper(eff)
+            copy.dst.offset.deeper(eff)
+        self.min_offset.deeper(eff)
+        self.final_offset.deeper(eff)
+
+    def adjust_higher(self, eff: StackEffect) -> None:
+        for peek in self.peeks:
+            peek.offset.higher(eff)
+        for poke in self.pokes:
+            poke.offset.higher(eff)
+        for copy in self.copies:
+            copy.src.offset.higher(eff)
+            copy.dst.offset.higher(eff)
+        self.min_offset.higher(eff)
+        self.final_offset.higher(eff)
+
+    def adjust(self, offset: StackOffset) -> None:
+        deep = list(offset.deep)
+        high = list(offset.high)
+        for down in deep:
+            self.adjust_deeper(down)
+        for up in high:
+            self.adjust_higher(up)
+
+    def adjust_inverse(self, offset: StackOffset) -> None:
+        deep = list(offset.deep)
+        high = list(offset.high)
+        for down in deep:
+            self.adjust_higher(down)
+        for up in high:
+            self.adjust_deeper(up)
+
+    def collect_vars(self) -> dict[str, StackEffect]:
+        """Collect all variables, skipping unused ones."""
+        vars: dict[str, StackEffect] = {}
+
+        def add(eff: StackEffect) -> None:
+            if eff.name != UNUSED:
+                if eff.name in vars:
+                    # TODO: Make this an error
+                    assert vars[eff.name] == eff, (
+                        self.instr.name,
+                        eff.name,
+                        vars[eff.name],
+                        eff,
+                    )
+                else:
+                    vars[eff.name] = eff
+
+        for copy in self.copies:
+            add(copy.src.effect)
+            add(copy.dst.effect)
+        for peek in self.peeks:
+            add(peek.effect)
+        for poke in self.pokes:
+            add(poke.effect)
+
+        return vars
+
+
+def less_than(a: StackOffset, b: StackOffset) -> bool:
+    # TODO: Handle more cases
+    if a.high != b.high:
+        return False
+    return a.deep[: len(b.deep)] == b.deep
+
+
+def get_managers(parts: list[Component]) -> list[EffectManager]:
+    managers: list[EffectManager] = []
+    pred: EffectManager | None = None
+    for part in parts:
+        mgr = EffectManager(part.instr, part.active_caches, pred)
+        managers.append(mgr)
+        pred = mgr
+    return managers
+
+
+def get_stack_effect_info_for_macro(mac: MacroInstruction) -> tuple[str, str]:
+    """Get the stack effect info for a macro instruction.
+
+    Returns a tuple (popped, pushed) where each is a string giving a
+    symbolic expression for the number of values popped/pushed.
+    """
+    parts = [part for part in mac.parts if isinstance(part, Component)]
+    managers = get_managers(parts)
+    popped = StackOffset()
+    for mgr in managers:
+        if less_than(mgr.min_offset, popped):
+            popped = mgr.min_offset.clone()
+    # Compute pushed = final - popped
+    pushed = managers[-1].final_offset.clone()
+    for effect in popped.deep:
+        pushed.higher(effect)
+    for effect in popped.high:
+        pushed.deeper(effect)
+    return popped.negate().as_index(), pushed.as_index()
+
+
+def write_single_instr(
+    instr: Instruction, out: Formatter, tier: Tiers = TIER_ONE
+) -> None:
+    try:
+        write_components(
+            [Component(instr, instr.active_caches)],
+            out,
+            tier,
+            0,
+            instr.family,
+        )
+    except AssertionError as err:
+        raise AssertionError(f"Error writing instruction {instr.name}") from err
+
+
+def write_macro_instr(mac: MacroInstruction, out: Formatter) -> None:
+    parts = [
+        part
+        for part in mac.parts
+        if isinstance(part, Component) and part.instr.name != "_SET_IP"
+    ]
+    out.emit("")
+    with out.block(f"TARGET({mac.name})"):
+        needs_this = any(part.instr.needs_this_instr for part in parts)
+        if needs_this and not mac.predicted:
+            out.emit(f"_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;")
+        else:
+            out.emit(f"frame->instr_ptr = next_instr;")
+        out.emit(f"next_instr += {mac.cache_offset+1};")
+        out.emit(f"INSTRUCTION_STATS({mac.name});")
+        if mac.predicted:
+            out.emit(f"PREDICTED({mac.name});")
+            if needs_this:
+                out.emit(f"_Py_CODEUNIT *this_instr = next_instr - {mac.cache_offset+1};")
+        out.static_assert_family_size(mac.name, mac.family, mac.cache_offset)
+        try:
+            next_instr_is_set = write_components(
+                parts, out, TIER_ONE, mac.cache_offset, mac.family
+            )
+        except AssertionError as err:
+            raise AssertionError(f"Error writing macro {mac.name}") from err
+        if not parts[-1].instr.always_exits:
+            if parts[-1].instr.check_eval_breaker:
+                out.emit("CHECK_EVAL_BREAKER();")
+            out.emit("DISPATCH();")
+
+
+def write_components(
+    parts: list[Component],
+    out: Formatter,
+    tier: Tiers,
+    cache_offset: int,
+    family: Family | None,
+) -> bool:
+    managers = get_managers(parts)
+
+    all_vars: dict[str, StackEffect] = {}
+    for mgr in managers:
+        for name, eff in mgr.collect_vars().items():
+            if name in all_vars:
+                # TODO: Turn this into an error -- variable conflict
+                assert all_vars[name] == eff, (
+                    name,
+                    mgr.instr.name,
+                    all_vars[name],
+                    eff,
+                )
+            else:
+                all_vars[name] = eff
+
+    # Declare all variables
+    for name, eff in all_vars.items():
+        out.declare(eff, None)
+
+    next_instr_is_set = False
+    for mgr in managers:
+        if len(parts) > 1:
+            out.emit(f"// {mgr.instr.name}")
+
+        for copy in mgr.copies:
+            copy_src_effect = copy.src.effect
+            if copy_src_effect.name != copy.dst.effect.name:
+                if copy_src_effect.name == UNUSED:
+                    copy_src_effect = copy.src.as_stack_effect()
+                out.assign(copy.dst.effect, copy_src_effect)
+        for peek in mgr.peeks:
+            out.assign(
+                peek.effect,
+                peek.as_stack_effect(),
+            )
+        # Initialize array outputs
+        for poke in mgr.pokes:
+            if poke.effect.size and poke.effect.name not in mgr.instr.unmoved_names:
+                out.assign(
+                    poke.effect,
+                    poke.as_stack_effect(lax=True),
+                )
+
+        if mgr.instr.name in ("_PUSH_FRAME", "_POP_FRAME"):
+            # Adjust stack to min_offset.
+            # This means that all input effects of this instruction
+            # are materialized, but not its output effects.
+            # That's as intended, since these two are so special.
+            out.stack_adjust(mgr.min_offset.deep, mgr.min_offset.high)
+            # However, for tier 2, pretend the stack is at final offset.
+            mgr.adjust_inverse(mgr.final_offset)
+            if tier == TIER_ONE:
+                # TODO: Check in analyzer that _{PUSH,POP}_FRAME is last.
+                assert (
+                    mgr is managers[-1]
+                ), f"Expected {mgr.instr.name!r} to be the last uop"
+                assert_no_pokes(managers)
+
+        if mgr.instr.name == "_SAVE_RETURN_OFFSET":
+            next_instr_is_set = True
+            if tier == TIER_ONE:
+                assert_no_pokes(managers)
+
+        if len(parts) == 1:
+            mgr.instr.write_body(out, 0, mgr.active_caches, tier, family)
+        else:
+            with out.block(""):
+                mgr.instr.write_body(out, -4, mgr.active_caches, tier, family)
+
+        if mgr is managers[-1] and not next_instr_is_set and not mgr.instr.always_exits:
+            # Adjust the stack to its final depth, *then* write the
+            # pokes for all preceding uops.
+            # Note that for array output effects we may still write
+            # past the stack top.
+            out.stack_adjust(mgr.final_offset.deep, mgr.final_offset.high)
+            write_all_pokes(mgr.final_offset, managers, out)
+
+    return next_instr_is_set
+
+
+def assert_no_pokes(managers: list[EffectManager]) -> None:
+    for mgr in managers:
+        for poke in mgr.pokes:
+            if not poke.effect.size and poke.effect.name not in mgr.instr.unmoved_names:
+                assert (
+                    poke.effect.name == UNUSED
+                ), f"Unexpected poke of {poke.effect.name} in {mgr.instr.name!r}"
+
+
+def write_all_pokes(
+    offset: StackOffset, managers: list[EffectManager], out: Formatter
+) -> None:
+    # Emit all remaining pushes (pokes)
+    for m in managers:
+        m.adjust_inverse(offset)
+        write_pokes(m, out)
+
+
+def write_pokes(mgr: EffectManager, out: Formatter) -> None:
+    for poke in mgr.pokes:
+        if not poke.effect.size and poke.effect.name not in mgr.instr.unmoved_names:
+            out.assign(
+                poke.as_stack_effect(),
+                poke.effect,
+            )
+
+
+def write_single_instr_for_abstract_interp(instr: Instruction, out: Formatter) -> None:
+    try:
+        _write_components_for_abstract_interp(
+            [Component(instr, instr.active_caches)],
+            out,
+        )
+    except AssertionError as err:
+        raise AssertionError(
+            f"Error writing abstract instruction {instr.name}"
+        ) from err
+
+
+def _write_components_for_abstract_interp(
+    parts: list[Component],
+    out: Formatter,
+) -> None:
+    managers = get_managers(parts)
+    for mgr in managers:
+        if mgr is managers[-1]:
+            out.stack_adjust(mgr.final_offset.deep, mgr.final_offset.high)
+            mgr.adjust_inverse(mgr.final_offset)
+        # NULL out the output stack effects
+        for poke in mgr.pokes:
+            if not poke.effect.size and poke.effect.name not in mgr.instr.unmoved_names:
+                out.emit(
+                    f"PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)"
+                    f"PARTITIONNODE_NULLROOT, PEEK(-({poke.offset.as_index()})), true);"
+                )
diff --git a/Tools/cases_generator/test_generator.py b/Tools/cases_generator/test_generator.py
deleted file mode 100644
index 036094ac8ef487..00000000000000
--- a/Tools/cases_generator/test_generator.py
+++ /dev/null
@@ -1,529 +0,0 @@
-# Sorry for using pytest, these tests are mostly just for me.
-# Use pytest -vv for best results.
-
-import tempfile
-
-import generate_cases
-from parser import StackEffect
-
-
-def test_effect_sizes():
-    input_effects = [
-        x := StackEffect("x", "", "", ""),
-        y := StackEffect("y", "", "", "oparg"),
-        z := StackEffect("z", "", "", "oparg*2"),
-    ]
-    output_effects = [
-        StackEffect("a", "", "", ""),
-        StackEffect("b", "", "", "oparg*4"),
-        StackEffect("c", "", "", ""),
-    ]
-    other_effects = [
-        StackEffect("p", "", "", "oparg<<1"),
-        StackEffect("q", "", "", ""),
-        StackEffect("r", "", "", ""),
-    ]
-    assert generate_cases.effect_size(x) == (1, "")
-    assert generate_cases.effect_size(y) == (0, "oparg")
-    assert generate_cases.effect_size(z) == (0, "oparg*2")
-
-    assert generate_cases.list_effect_size(input_effects) == (1, "oparg + oparg*2")
-    assert generate_cases.list_effect_size(output_effects) == (2, "oparg*4")
-    assert generate_cases.list_effect_size(other_effects) == (2, "(oparg<<1)")
-
-    assert generate_cases.string_effect_size(generate_cases.list_effect_size(input_effects)) == "1 + oparg + oparg*2"
-    assert generate_cases.string_effect_size(generate_cases.list_effect_size(output_effects)) == "2 + oparg*4"
-    assert generate_cases.string_effect_size(generate_cases.list_effect_size(other_effects)) == "2 + (oparg<<1)"
-
-
-def run_cases_test(input: str, expected: str):
-    temp_input = tempfile.NamedTemporaryFile("w+")
-    temp_input.write(generate_cases.BEGIN_MARKER)
-    temp_input.write(input)
-    temp_input.write(generate_cases.END_MARKER)
-    temp_input.flush()
-    temp_output = tempfile.NamedTemporaryFile("w+")
-    a = generate_cases.Analyzer(temp_input.name, temp_output.name)
-    a.parse()
-    a.analyze()
-    if a.errors:
-        raise RuntimeError(f"Found {a.errors} errors")
-    a.write_instructions()
-    temp_output.seek(0)
-    lines = temp_output.readlines()
-    while lines and lines[0].startswith("// "):
-        lines.pop(0)
-    actual = "".join(lines)
-    # if actual.rstrip() != expected.rstrip():
-    #     print("Actual:")
-    #     print(actual)
-    #     print("Expected:")
-    #     print(expected)
-    #     print("End")
-    assert actual.rstrip() == expected.rstrip()
-
-def test_legacy():
-    input = """
-        inst(OP) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            spam();
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_inst_no_args():
-    input = """
-        inst(OP, (--)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            spam();
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_inst_one_pop():
-    input = """
-        inst(OP, (value --)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *value = PEEK(1);
-            spam();
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_inst_one_push():
-    input = """
-        inst(OP, (-- res)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *res;
-            spam();
-            STACK_GROW(1);
-            POKE(1, res);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_inst_one_push_one_pop():
-    input = """
-        inst(OP, (value -- res)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *value = PEEK(1);
-            PyObject *res;
-            spam();
-            POKE(1, res);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_binary_op():
-    input = """
-        inst(OP, (left, right -- res)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *right = PEEK(1);
-            PyObject *left = PEEK(2);
-            PyObject *res;
-            spam();
-            STACK_SHRINK(1);
-            POKE(1, res);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_overlap():
-    input = """
-        inst(OP, (left, right -- left, result)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *right = PEEK(1);
-            PyObject *left = PEEK(2);
-            PyObject *result;
-            spam();
-            POKE(1, result);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_predictions_and_eval_breaker():
-    input = """
-        inst(OP1, (--)) {
-        }
-        inst(OP2, (--)) {
-        }
-        inst(OP3, (arg -- res)) {
-            DEOPT_IF(xxx, OP1);
-            PREDICT(OP2);
-            CHECK_EVAL_BREAKER();
-        }
-    """
-    output = """
-        TARGET(OP1) {
-            PREDICTED(OP1);
-            DISPATCH();
-        }
-
-        TARGET(OP2) {
-            PREDICTED(OP2);
-            DISPATCH();
-        }
-
-        TARGET(OP3) {
-            PyObject *arg = PEEK(1);
-            PyObject *res;
-            DEOPT_IF(xxx, OP1);
-            POKE(1, res);
-            PREDICT(OP2);
-            CHECK_EVAL_BREAKER();
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_error_if_plain():
-    input = """
-        inst(OP, (--)) {
-            ERROR_IF(cond, label);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            if (cond) goto label;
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_error_if_plain_with_comment():
-    input = """
-        inst(OP, (--)) {
-            ERROR_IF(cond, label);  // Comment is ok
-        }
-    """
-    output = """
-        TARGET(OP) {
-            if (cond) goto label;
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_error_if_pop():
-    input = """
-        inst(OP, (left, right -- res)) {
-            ERROR_IF(cond, label);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *right = PEEK(1);
-            PyObject *left = PEEK(2);
-            PyObject *res;
-            if (cond) goto pop_2_label;
-            STACK_SHRINK(1);
-            POKE(1, res);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_cache_effect():
-    input = """
-        inst(OP, (counter/1, extra/2, value --)) {
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *value = PEEK(1);
-            uint16_t counter = read_u16(&next_instr[0].cache);
-            uint32_t extra = read_u32(&next_instr[1].cache);
-            STACK_SHRINK(1);
-            JUMPBY(3);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_suppress_dispatch():
-    input = """
-        inst(OP, (--)) {
-            goto somewhere;
-        }
-    """
-    output = """
-        TARGET(OP) {
-            goto somewhere;
-        }
-    """
-    run_cases_test(input, output)
-
-def test_super_instruction():
-    # TODO: Test cache effect
-    input = """
-        inst(OP1, (counter/1, arg --)) {
-            op1();
-        }
-        inst(OP2, (extra/2, arg --)) {
-            op2();
-        }
-        super(OP) = OP1 + OP2;
-    """
-    output = """
-        TARGET(OP1) {
-            PyObject *arg = PEEK(1);
-            uint16_t counter = read_u16(&next_instr[0].cache);
-            op1();
-            STACK_SHRINK(1);
-            JUMPBY(1);
-            DISPATCH();
-        }
-
-        TARGET(OP2) {
-            PyObject *arg = PEEK(1);
-            uint32_t extra = read_u32(&next_instr[0].cache);
-            op2();
-            STACK_SHRINK(1);
-            JUMPBY(2);
-            DISPATCH();
-        }
-
-        TARGET(OP) {
-            PyObject *_tmp_1 = PEEK(1);
-            PyObject *_tmp_2 = PEEK(2);
-            {
-                PyObject *arg = _tmp_1;
-                uint16_t counter = read_u16(&next_instr[0].cache);
-                op1();
-            }
-            JUMPBY(1);
-            NEXTOPARG();
-            JUMPBY(1);
-            {
-                PyObject *arg = _tmp_2;
-                uint32_t extra = read_u32(&next_instr[0].cache);
-                op2();
-            }
-            JUMPBY(2);
-            STACK_SHRINK(2);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_macro_instruction():
-    input = """
-        inst(OP1, (counter/1, left, right -- left, right)) {
-            op1(left, right);
-        }
-        op(OP2, (extra/2, arg2, left, right -- res)) {
-            res = op2(arg2, left, right);
-        }
-        macro(OP) = OP1 + cache/2 + OP2;
-        inst(OP3, (unused/5, arg2, left, right -- res)) {
-            res = op3(arg2, left, right);
-        }
-        family(op, INLINE_CACHE_ENTRIES_OP) = { OP, OP3 };
-    """
-    output = """
-        TARGET(OP1) {
-            PyObject *right = PEEK(1);
-            PyObject *left = PEEK(2);
-            uint16_t counter = read_u16(&next_instr[0].cache);
-            op1(left, right);
-            JUMPBY(1);
-            DISPATCH();
-        }
-
-        TARGET(OP) {
-            PyObject *_tmp_1 = PEEK(1);
-            PyObject *_tmp_2 = PEEK(2);
-            PyObject *_tmp_3 = PEEK(3);
-            {
-                PyObject *right = _tmp_1;
-                PyObject *left = _tmp_2;
-                uint16_t counter = read_u16(&next_instr[0].cache);
-                op1(left, right);
-                _tmp_2 = left;
-                _tmp_1 = right;
-            }
-            {
-                PyObject *right = _tmp_1;
-                PyObject *left = _tmp_2;
-                PyObject *arg2 = _tmp_3;
-                PyObject *res;
-                uint32_t extra = read_u32(&next_instr[3].cache);
-                res = op2(arg2, left, right);
-                _tmp_3 = res;
-            }
-            JUMPBY(5);
-            static_assert(INLINE_CACHE_ENTRIES_OP == 5, "incorrect cache size");
-            STACK_SHRINK(2);
-            POKE(1, _tmp_3);
-            DISPATCH();
-        }
-
-        TARGET(OP3) {
-            PyObject *right = PEEK(1);
-            PyObject *left = PEEK(2);
-            PyObject *arg2 = PEEK(3);
-            PyObject *res;
-            res = op3(arg2, left, right);
-            STACK_SHRINK(2);
-            POKE(1, res);
-            JUMPBY(5);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_array_input():
-    input = """
-        inst(OP, (below, values[oparg*2], above --)) {
-            spam();
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *above = PEEK(1);
-            PyObject **values = &PEEK(1 + oparg*2);
-            PyObject *below = PEEK(2 + oparg*2);
-            spam();
-            STACK_SHRINK(oparg*2);
-            STACK_SHRINK(2);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_array_output():
-    input = """
-        inst(OP, (unused, unused -- below, values[oparg*3], above)) {
-            spam(values, oparg);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *below;
-            PyObject **values = stack_pointer - (2) + 1;
-            PyObject *above;
-            spam(values, oparg);
-            STACK_GROW(oparg*3);
-            POKE(1, above);
-            POKE(2 + oparg*3, below);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_array_input_output():
-    input = """
-        inst(OP, (values[oparg] -- values[oparg], above)) {
-            spam(values, oparg);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject **values = &PEEK(oparg);
-            PyObject *above;
-            spam(values, oparg);
-            STACK_GROW(1);
-            POKE(1, above);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_array_error_if():
-    input = """
-        inst(OP, (extra, values[oparg] --)) {
-            ERROR_IF(oparg == 0, somewhere);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject **values = &PEEK(oparg);
-            PyObject *extra = PEEK(1 + oparg);
-            if (oparg == 0) { STACK_SHRINK(oparg); goto pop_1_somewhere; }
-            STACK_SHRINK(oparg);
-            STACK_SHRINK(1);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_register():
-    input = """
-        register inst(OP, (counter/1, left, right -- result)) {
-            result = op(left, right);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *left = REG(oparg1);
-            PyObject *right = REG(oparg2);
-            PyObject *result;
-            uint16_t counter = read_u16(&next_instr[0].cache);
-            result = op(left, right);
-            Py_XSETREF(REG(oparg3), result);
-            JUMPBY(1);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
-
-def test_cond_effect():
-    input = """
-        inst(OP, (aa, input if ((oparg & 1) == 1), cc -- xx, output if (oparg & 2), zz)) {
-            output = spam(oparg, input);
-        }
-    """
-    output = """
-        TARGET(OP) {
-            PyObject *cc = PEEK(1);
-            PyObject *input = ((oparg & 1) == 1) ? PEEK(1 + (((oparg & 1) == 1) ? 1 : 0)) : NULL;
-            PyObject *aa = PEEK(2 + (((oparg & 1) == 1) ? 1 : 0));
-            PyObject *xx;
-            PyObject *output = NULL;
-            PyObject *zz;
-            output = spam(oparg, input);
-            STACK_SHRINK((((oparg & 1) == 1) ? 1 : 0));
-            STACK_GROW(((oparg & 2) ? 1 : 0));
-            POKE(1, zz);
-            if (oparg & 2) { POKE(1 + ((oparg & 2) ? 1 : 0), output); }
-            POKE(2 + ((oparg & 2) ? 1 : 0), xx);
-            DISPATCH();
-        }
-    """
-    run_cases_test(input, output)
diff --git a/Tools/cases_generator/tier1_generator.py b/Tools/cases_generator/tier1_generator.py
new file mode 100644
index 00000000000000..9787403b3bbc47
--- /dev/null
+++ b/Tools/cases_generator/tier1_generator.py
@@ -0,0 +1,410 @@
+"""Generate the main interpreter switch.
+Reads the instruction definitions from bytecodes.c.
+Writes the cases to generated_cases.c.h, which is #included in ceval.c.
+"""
+
+import argparse
+import os.path
+import sys
+
+from analyzer import (
+    Analysis,
+    Instruction,
+    Uop,
+    Part,
+    analyze_files,
+    Skip,
+    StackItem,
+    analysis_error,
+)
+from generators_common import (
+    DEFAULT_INPUT,
+    ROOT,
+    write_header,
+)
+from cwriter import CWriter
+from typing import TextIO, Iterator
+from lexer import Token
+from stack import StackOffset
+
+
+DEFAULT_OUTPUT = ROOT / "Python/generated_cases.c.h"
+
+
+FOOTER = "#undef TIER_ONE\n"
+
+
+class SizeMismatch(Exception):
+    pass
+
+
+class Stack:
+    def __init__(self) -> None:
+        self.top_offset = StackOffset()
+        self.base_offset = StackOffset()
+        self.peek_offset = StackOffset()
+        self.variables: list[StackItem] = []
+        self.defined: set[str] = set()
+
+    def pop(self, var: StackItem) -> str:
+        self.top_offset.pop(var)
+        if not var.peek:
+            self.peek_offset.pop(var)
+        indirect = "&" if var.is_array() else ""
+        if self.variables:
+            popped = self.variables.pop()
+            if popped.size != var.size:
+                raise SizeMismatch(
+                    f"Size mismatch when popping '{popped.name}' from stack to assign to {var.name}. "
+                    f"Expected {var.size} got {popped.size}"
+                )
+            if popped.name == var.name:
+                return ""
+            elif popped.name == "unused":
+                self.defined.add(var.name)
+                return (
+                    f"{var.name} = {indirect}stack_pointer[{self.top_offset.to_c()}];\n"
+                )
+            elif var.name == "unused":
+                return ""
+            else:
+                self.defined.add(var.name)
+                return f"{var.name} = {popped.name};\n"
+        self.base_offset.pop(var)
+        if var.name == "unused":
+            return ""
+        else:
+            self.defined.add(var.name)
+        assign = f"{var.name} = {indirect}stack_pointer[{self.base_offset.to_c()}];"
+        if var.condition:
+            return f"if ({var.condition}) {{ {assign} }}\n"
+        return f"{assign}\n"
+
+    def push(self, var: StackItem) -> str:
+        self.variables.append(var)
+        if var.is_array() and var.name not in self.defined and var.name != "unused":
+            c_offset = self.top_offset.to_c()
+            self.top_offset.push(var)
+            self.defined.add(var.name)
+            return f"{var.name} = &stack_pointer[{c_offset}];\n"
+        else:
+            self.top_offset.push(var)
+            return ""
+
+    def flush(self, out: CWriter) -> None:
+        for var in self.variables:
+            if not var.peek:
+                if var.name != "unused" and not var.is_array():
+                    if var.condition:
+                        out.emit(f" if ({var.condition}) ")
+                    out.emit(
+                        f"stack_pointer[{self.base_offset.to_c()}] = {var.name};\n"
+                    )
+            self.base_offset.push(var)
+        if self.base_offset.to_c() != self.top_offset.to_c():
+            print("base", self.base_offset.to_c(), "top", self.top_offset.to_c())
+            assert False
+        number = self.base_offset.to_c()
+        if number != "0":
+            out.emit(f"stack_pointer += {number};\n")
+        self.variables = []
+        self.base_offset.clear()
+        self.top_offset.clear()
+        self.peek_offset.clear()
+
+    def as_comment(self) -> str:
+        return f"/* Variables: {[v.name for v in self.variables]}. Base offset: {self.base_offset.to_c()}. Top offset: {self.top_offset.to_c()} */"
+
+
+def declare_variables(inst: Instruction, out: CWriter) -> None:
+    variables = {"unused"}
+    for uop in inst.parts:
+        if isinstance(uop, Uop):
+            for var in reversed(uop.stack.inputs):
+                if var.name not in variables:
+                    type = var.type if var.type else "PyObject *"
+                    variables.add(var.name)
+                    if var.condition:
+                        out.emit(f"{type}{var.name} = NULL;\n")
+                    else:
+                        out.emit(f"{type}{var.name};\n")
+            for var in uop.stack.outputs:
+                if var.name not in variables:
+                    variables.add(var.name)
+                    type = var.type if var.type else "PyObject *"
+                    if var.condition:
+                        out.emit(f"{type}{var.name} = NULL;\n")
+                    else:
+                        out.emit(f"{type}{var.name};\n")
+
+
+def emit_to(out: CWriter, tkn_iter: Iterator[Token], end: str) -> None:
+    parens = 0
+    for tkn in tkn_iter:
+        if tkn.kind == end and parens == 0:
+            return
+        if tkn.kind == "LPAREN":
+            parens += 1
+        if tkn.kind == "RPAREN":
+            parens -= 1
+        out.emit(tkn)
+
+
+def replace_deopt(
+    out: CWriter,
+    tkn: Token,
+    tkn_iter: Iterator[Token],
+    uop: Uop,
+    unused: Stack,
+    inst: Instruction,
+) -> None:
+    out.emit_at("DEOPT_IF", tkn)
+    out.emit(next(tkn_iter))
+    emit_to(out, tkn_iter, "RPAREN")
+    next(tkn_iter)  # Semi colon
+    out.emit(", ")
+    assert inst.family is not None
+    out.emit(inst.family.name)
+    out.emit(");\n")
+
+
+def replace_error(
+    out: CWriter,
+    tkn: Token,
+    tkn_iter: Iterator[Token],
+    uop: Uop,
+    stack: Stack,
+    inst: Instruction,
+) -> None:
+    out.emit_at("if ", tkn)
+    out.emit(next(tkn_iter))
+    emit_to(out, tkn_iter, "COMMA")
+    label = next(tkn_iter).text
+    next(tkn_iter)  # RPAREN
+    next(tkn_iter)  # Semi colon
+    out.emit(") ")
+    c_offset = stack.peek_offset.to_c()
+    try:
+        offset = -int(c_offset)
+        close = ";\n"
+    except ValueError:
+        offset = None
+        out.emit(f"{{ stack_pointer += {c_offset}; ")
+        close = "; }\n"
+    out.emit("goto ")
+    if offset:
+        out.emit(f"pop_{offset}_")
+    out.emit(label)
+    out.emit(close)
+
+
+def replace_decrefs(
+    out: CWriter,
+    tkn: Token,
+    tkn_iter: Iterator[Token],
+    uop: Uop,
+    stack: Stack,
+    inst: Instruction,
+) -> None:
+    next(tkn_iter)
+    next(tkn_iter)
+    next(tkn_iter)
+    out.emit_at("", tkn)
+    for var in uop.stack.inputs:
+        if var.name == "unused" or var.name == "null" or var.peek:
+            continue
+        if var.size != "1":
+            out.emit(f"for (int _i = {var.size}; --_i >= 0;) {{\n")
+            out.emit(f"Py_DECREF({var.name}[_i]);\n")
+            out.emit("}\n")
+        elif var.condition:
+            out.emit(f"Py_XDECREF({var.name});\n")
+        else:
+            out.emit(f"Py_DECREF({var.name});\n")
+
+
+def replace_store_sp(
+    out: CWriter,
+    tkn: Token,
+    tkn_iter: Iterator[Token],
+    uop: Uop,
+    stack: Stack,
+    inst: Instruction,
+) -> None:
+    next(tkn_iter)
+    next(tkn_iter)
+    next(tkn_iter)
+    out.emit_at("", tkn)
+    stack.flush(out)
+    out.emit("_PyFrame_SetStackPointer(frame, stack_pointer);\n")
+
+
+def replace_check_eval_breaker(
+    out: CWriter,
+    tkn: Token,
+    tkn_iter: Iterator[Token],
+    uop: Uop,
+    stack: Stack,
+    inst: Instruction,
+) -> None:
+    next(tkn_iter)
+    next(tkn_iter)
+    next(tkn_iter)
+    if not uop.properties.ends_with_eval_breaker:
+        out.emit_at("CHECK_EVAL_BREAKER();", tkn)
+
+
+REPLACEMENT_FUNCTIONS = {
+    "DEOPT_IF": replace_deopt,
+    "ERROR_IF": replace_error,
+    "DECREF_INPUTS": replace_decrefs,
+    "CHECK_EVAL_BREAKER": replace_check_eval_breaker,
+    "STORE_SP": replace_store_sp,
+}
+
+
+# Move this to formatter
+def emit_tokens(out: CWriter, uop: Uop, stack: Stack, inst: Instruction) -> None:
+    tkns = uop.body[1:-1]
+    if not tkns:
+        return
+    tkn_iter = iter(tkns)
+    out.start_line()
+    for tkn in tkn_iter:
+        if tkn.kind == "IDENTIFIER" and tkn.text in REPLACEMENT_FUNCTIONS:
+            REPLACEMENT_FUNCTIONS[tkn.text](out, tkn, tkn_iter, uop, stack, inst)
+        else:
+            out.emit(tkn)
+
+
+def write_uop(
+    uop: Part, out: CWriter, offset: int, stack: Stack, inst: Instruction, braces: bool
+) -> int:
+    # out.emit(stack.as_comment() + "\n")
+    if isinstance(uop, Skip):
+        entries = "entries" if uop.size > 1 else "entry"
+        out.emit(f"/* Skip {uop.size} cache {entries} */\n")
+        return offset + uop.size
+    try:
+        out.start_line()
+        if braces:
+            out.emit(f"// {uop.name}\n")
+        for var in reversed(uop.stack.inputs):
+            out.emit(stack.pop(var))
+        if braces:
+            out.emit("{\n")
+        if not uop.properties.stores_sp:
+            for i, var in enumerate(uop.stack.outputs):
+                out.emit(stack.push(var))
+        for cache in uop.caches:
+            if cache.name != "unused":
+                if cache.size == 4:
+                    type = "PyObject *"
+                    reader = "read_obj"
+                else:
+                    type = f"uint{cache.size*16}_t "
+                    reader = f"read_u{cache.size*16}"
+                out.emit(
+                    f"{type}{cache.name} = {reader}(&this_instr[{offset}].cache);\n"
+                )
+            offset += cache.size
+        emit_tokens(out, uop, stack, inst)
+        if uop.properties.stores_sp:
+            for i, var in enumerate(uop.stack.outputs):
+                out.emit(stack.push(var))
+        if braces:
+            out.start_line()
+            out.emit("}\n")
+        # out.emit(stack.as_comment() + "\n")
+        return offset
+    except SizeMismatch as ex:
+        raise analysis_error(ex.args[0], uop.body[0])
+
+
+def uses_this(inst: Instruction) -> bool:
+    if inst.properties.needs_this:
+        return True
+    for uop in inst.parts:
+        if isinstance(uop, Skip):
+            continue
+        for cache in uop.caches:
+            if cache.name != "unused":
+                return True
+    return False
+
+
+def generate_tier1(
+    filenames: str, analysis: Analysis, outfile: TextIO, lines: bool
+) -> None:
+    write_header(__file__, filenames, outfile)
+    outfile.write(
+        """
+#ifdef TIER_TWO
+    #error "This file is for Tier 1 only"
+#endif
+#define TIER_ONE 1
+"""
+    )
+    out = CWriter(outfile, 2, lines)
+    out.emit("\n")
+    for name, inst in sorted(analysis.instructions.items()):
+        needs_this = uses_this(inst)
+        out.emit("\n")
+        out.emit(f"TARGET({name}) {{\n")
+        if needs_this and not inst.is_target:
+            out.emit(f"_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;\n")
+        else:
+            out.emit(f"frame->instr_ptr = next_instr;\n")
+        out.emit(f"next_instr += {inst.size};\n")
+        out.emit(f"INSTRUCTION_STATS({name});\n")
+        if inst.is_target:
+            out.emit(f"PREDICTED({name});\n")
+            if needs_this:
+                out.emit(f"_Py_CODEUNIT *this_instr = next_instr - {inst.size};\n")
+        if inst.family is not None:
+            out.emit(
+                f"static_assert({inst.family.size} == {inst.size-1}"
+                ', "incorrect cache size");\n'
+            )
+        declare_variables(inst, out)
+        offset = 1  # The instruction itself
+        stack = Stack()
+        for part in inst.parts:
+            # Only emit braces if more than one uop
+            offset = write_uop(part, out, offset, stack, inst, len(inst.parts) > 1)
+        out.start_line()
+        if not inst.parts[-1].properties.always_exits:
+            stack.flush(out)
+            if inst.parts[-1].properties.ends_with_eval_breaker:
+                out.emit("CHECK_EVAL_BREAKER();\n")
+            out.emit("DISPATCH();\n")
+        out.start_line()
+        out.emit("}")
+        out.emit("\n")
+    outfile.write(FOOTER)
+
+
+arg_parser = argparse.ArgumentParser(
+    description="Generate the code for the interpreter switch.",
+    formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+)
+
+arg_parser.add_argument(
+    "-o", "--output", type=str, help="Generated code", default=DEFAULT_OUTPUT
+)
+
+arg_parser.add_argument(
+    "-l", "--emit-line-directives", help="Emit #line directives", action="store_true"
+)
+
+arg_parser.add_argument(
+    "input", nargs=argparse.REMAINDER, help="Instruction definition file(s)"
+)
+
+if __name__ == "__main__":
+    args = arg_parser.parse_args()
+    if len(args.input) == 0:
+        args.input.append(DEFAULT_INPUT)
+    data = analyze_files(args.input)
+    with open(args.output, "w") as outfile:
+        generate_tier1(args.input, data, outfile, args.emit_line_directives)
diff --git a/Tools/clinic/.ruff.toml b/Tools/clinic/.ruff.toml
new file mode 100644
index 00000000000000..cbb3a9a8f3a8c2
--- /dev/null
+++ b/Tools/clinic/.ruff.toml
@@ -0,0 +1,29 @@
+target-version = "py310"
+fix = true
+select = [
+    "F",  # Enable all pyflakes rules
+    "UP",  # Enable all pyupgrade rules by default
+    "RUF100",  # Ban unused `# noqa` comments
+    "PGH004",  # Ban blanket `# noqa` comments (only ignore specific error codes)
+]
+ignore = [
+    # Unnecessary parentheses to functools.lru_cache: just leads to unnecessary churn.
+    # https://github.com/python/cpython/pull/104684#discussion_r1199653347.
+    "UP011",
+    # Use format specifiers instead of %-style formatting.
+    # Doesn't always make code more readable.
+    "UP031",
+    # Use f-strings instead of format specifiers.
+    # Doesn't always make code more readable.
+    "UP032",
+    # Use PEP-604 unions rather than tuples for isinstance() checks.
+    # Makes code slower and more verbose. https://github.com/astral-sh/ruff/issues/7871.
+    "UP038",
+]
+unfixable = [
+    # The autofixes sometimes do the wrong things for these;
+    # it's better to have to manually look at the code and see how it needs fixing
+    "F841",  # Detects unused variables
+    "F601",  # Detects dictionaries that have duplicate keys
+    "F602",  # Also detects dictionaries that have duplicate keys
+]
diff --git a/Tools/clinic/clinic.py b/Tools/clinic/clinic.py
index 4270fb3cc56613..6c76f66a81abd4 100755
--- a/Tools/clinic/clinic.py
+++ b/Tools/clinic/clinic.py
@@ -4,14 +4,18 @@
 # Copyright 2012-2013 by Larry Hastings.
 # Licensed to the PSF under a contributor agreement.
 #
+from __future__ import annotations
 
 import abc
+import argparse
 import ast
 import builtins as bltns
 import collections
 import contextlib
 import copy
 import cpp
+import dataclasses as dc
+import enum
 import functools
 import hashlib
 import inspect
@@ -24,12 +28,27 @@
 import string
 import sys
 import textwrap
-import traceback
-import types
 
-from collections.abc import Callable
-from types import *
-from typing import Any, NamedTuple
+from collections.abc import (
+    Callable,
+    Iterable,
+    Iterator,
+    Sequence,
+)
+from operator import attrgetter
+from types import FunctionType, NoneType
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Final,
+    Literal,
+    NamedTuple,
+    NoReturn,
+    Protocol,
+    TypeVar,
+    cast,
+    overload,
+)
 
 # TODO:
 #
@@ -59,39 +78,47 @@
     "return_value",
 }
 
-class Unspecified:
-    def __repr__(self):
-        return '<Unspecified>'
+# '#include "header.h"   // reason': column of '//' comment
+INCLUDE_COMMENT_COLUMN = 35
 
-unspecified = Unspecified()
+# match '#define Py_LIMITED_API'
+LIMITED_CAPI_REGEX = re.compile(r'#define +Py_LIMITED_API')
 
 
-class Null:
-    def __repr__(self):
-        return '<Null>'
+class Sentinels(enum.Enum):
+    unspecified = "unspecified"
+    unknown = "unknown"
+
+    def __repr__(self) -> str:
+        return f"<{self.value.capitalize()}>"
 
-NULL = Null()
 
+unspecified: Final = Sentinels.unspecified
+unknown: Final = Sentinels.unknown
+
+
+# This one needs to be a distinct class, unlike the other two
+class Null:
+    def __repr__(self) -> str:
+        return '<Null>'
 
-class Unknown:
-    def __repr__(self):
-        return '<Unknown>'
 
-unknown = Unknown()
+NULL = Null()
 
 sig_end_marker = '--'
 
 Appender = Callable[[str], None]
-Outputter = Callable[[None], str]
+Outputter = Callable[[], str]
+TemplateDict = dict[str, str]
 
 class _TextAccumulator(NamedTuple):
     text: list[str]
     append: Appender
     output: Outputter
 
-def _text_accumulator():
-    text = []
-    def output():
+def _text_accumulator() -> _TextAccumulator:
+    text: list[str] = []
+    def output() -> str:
         s = ''.join(text)
         text.clear()
         return s
@@ -99,10 +126,10 @@ def output():
 
 
 class TextAccumulator(NamedTuple):
-    text: list[str]
     append: Appender
+    output: Outputter
 
-def text_accumulator():
+def text_accumulator() -> TextAccumulator:
     """
     Creates a simple text accumulator / joiner.
 
@@ -117,37 +144,78 @@ def text_accumulator():
     return TextAccumulator(append, output)
 
 
-def warn_or_fail(fail=False, *args, filename=None, line_number=None):
+@dc.dataclass
+class ClinicError(Exception):
+    message: str
+    _: dc.KW_ONLY
+    lineno: int | None = None
+    filename: str | None = None
+
+    def __post_init__(self) -> None:
+        super().__init__(self.message)
+
+    def report(self, *, warn_only: bool = False) -> str:
+        msg = "Warning" if warn_only else "Error"
+        if self.filename is not None:
+            msg += f" in file {self.filename!r}"
+        if self.lineno is not None:
+            msg += f" on line {self.lineno}"
+        msg += ":\n"
+        msg += f"{self.message}\n"
+        return msg
+
+
+@overload
+def warn_or_fail(
+    *args: object,
+    fail: Literal[True],
+    filename: str | None = None,
+    line_number: int | None = None,
+) -> NoReturn: ...
+
+@overload
+def warn_or_fail(
+    *args: object,
+    fail: Literal[False] = False,
+    filename: str | None = None,
+    line_number: int | None = None,
+) -> None: ...
+
+def warn_or_fail(
+    *args: object,
+    fail: bool = False,
+    filename: str | None = None,
+    line_number: int | None = None,
+) -> None:
     joined = " ".join([str(a) for a in args])
-    add, output = text_accumulator()
-    if fail:
-        add("Error")
-    else:
-        add("Warning")
     if clinic:
         if filename is None:
             filename = clinic.filename
         if getattr(clinic, 'block_parser', None) and (line_number is None):
             line_number = clinic.block_parser.line_number
-    if filename is not None:
-        add(' in file "' + filename + '"')
-    if line_number is not None:
-        add(" on line " + str(line_number))
-    add(':\n')
-    add(joined)
-    print(output())
+    error = ClinicError(joined, filename=filename, lineno=line_number)
     if fail:
-        sys.exit(-1)
+        raise error
+    else:
+        print(error.report(warn_only=True))
 
 
-def warn(*args, filename=None, line_number=None):
-    return warn_or_fail(False, *args, filename=filename, line_number=line_number)
+def warn(
+    *args: object,
+    filename: str | None = None,
+    line_number: int | None = None,
+) -> None:
+    return warn_or_fail(*args, filename=filename, line_number=line_number, fail=False)
 
-def fail(*args, filename=None, line_number=None):
-    return warn_or_fail(True, *args, filename=filename, line_number=line_number)
+def fail(
+    *args: object,
+    filename: str | None = None,
+    line_number: int | None = None,
+) -> NoReturn:
+    warn_or_fail(*args, filename=filename, line_number=line_number, fail=True)
 
 
-def quoted_for_c_string(s):
+def quoted_for_c_string(s: str) -> str:
     for old, new in (
         ('\\', '\\\\'), # must be first!
         ('"', '\\"'),
@@ -156,13 +224,27 @@ def quoted_for_c_string(s):
         s = s.replace(old, new)
     return s
 
-def c_repr(s):
+def c_repr(s: str) -> str:
     return '"' + s + '"'
 
 
+def wrapped_c_string_literal(
+        text: str,
+        *,
+        width: int = 72,
+        suffix: str = '',
+        initial_indent: int = 0,
+        subsequent_indent: int = 4
+) -> str:
+    wrapped = textwrap.wrap(text, width=width, replace_whitespace=False,
+                            drop_whitespace=False, break_on_hyphens=False)
+    separator = '"' + suffix + '\n' + subsequent_indent * ' ' + '"'
+    return initial_indent * ' ' + '"' + separator.join(wrapped) + '"'
+
+
 is_legal_c_identifier = re.compile('^[A-Za-z_][A-Za-z0-9_]*$').match
 
-def is_legal_py_identifier(s):
+def is_legal_py_identifier(s: str) -> bool:
     return all(is_legal_c_identifier(field) for field in s.split('.'))
 
 # identifiers that are okay in Python but aren't a good idea in C.
@@ -175,16 +257,16 @@ def is_legal_py_identifier(s):
 typedef typeof union unsigned void volatile while
 """.strip().split())
 
-def ensure_legal_c_identifier(s):
+def ensure_legal_c_identifier(s: str) -> str:
     # for now, just complain if what we're given isn't legal
     if not is_legal_c_identifier(s):
-        fail("Illegal C identifier: {}".format(s))
+        fail("Illegal C identifier:", s)
     # but if we picked a C keyword, pick something else
     if s in c_keywords:
         return s + "_value"
     return s
 
-def rstrip_lines(s):
+def rstrip_lines(s: str) -> str:
     text, add, output = _text_accumulator()
     for line in s.split('\n'):
         add(line.rstrip())
@@ -192,14 +274,14 @@ def rstrip_lines(s):
     text.pop()
     return output()
 
-def format_escape(s):
+def format_escape(s: str) -> str:
     # double up curly-braces, this string will be used
     # as part of a format_map() template later
     s = s.replace('{', '{{')
     s = s.replace('}', '}}')
     return s
 
-def linear_format(s, **kwargs):
+def linear_format(s: str, **kwargs: str) -> str:
     """
     Perform str.format-like substitution, except:
       * The strings substituted must be on lines by
@@ -229,9 +311,11 @@ def linear_format(s, **kwargs):
             continue
 
         if trailing:
-            fail("Text found after {" + name + "} block marker!  It must be on a line by itself.")
+            fail(f"Text found after {{{name}}} block marker! "
+                 "It must be on a line by itself.")
         if indent.strip():
-            fail("Non-whitespace characters found before {" + name + "} block marker!  It must be on a line by itself.")
+            fail(f"Non-whitespace characters found before {{{name}}} block marker! "
+                 "It must be on a line by itself.")
 
         value = kwargs[name]
         if not value:
@@ -243,7 +327,7 @@ def linear_format(s, **kwargs):
 
     return output()[:-1]
 
-def indent_all_lines(s, prefix):
+def indent_all_lines(s: str, prefix: str) -> str:
     """
     Returns 's', with 'prefix' prepended to all lines.
 
@@ -264,7 +348,7 @@ def indent_all_lines(s, prefix):
         final.append(last)
     return ''.join(final)
 
-def suffix_all_lines(s, suffix):
+def suffix_all_lines(s: str, suffix: str) -> str:
     """
     Returns 's', with 'suffix' appended to all lines.
 
@@ -284,7 +368,14 @@ def suffix_all_lines(s, suffix):
     return ''.join(final)
 
 
-def version_splitter(s):
+def pprint_words(items: list[str]) -> str:
+    if len(items) <= 2:
+        return " and ".join(items)
+    else:
+        return ", ".join(items[:-1]) + " and " + items[-1]
+
+
+def version_splitter(s: str) -> tuple[int, ...]:
     """Splits a version string into a tuple of integers.
 
     The following ASCII characters are allowed, and employ
@@ -294,11 +385,11 @@ def version_splitter(s):
         c -> -1
     (This permits Python-style version strings such as "1.4b3".)
     """
-    version = []
-    accumulator = []
-    def flush():
+    version: list[int] = []
+    accumulator: list[str] = []
+    def flush() -> None:
         if not accumulator:
-            raise ValueError('Unsupported version string: ' + repr(s))
+            fail(f'Unsupported version string: {s!r}')
         version.append(int(''.join(accumulator)))
         accumulator.clear()
 
@@ -311,13 +402,15 @@ def flush():
             flush()
             version.append('abc'.index(c) - 3)
         else:
-            raise ValueError('Illegal character ' + repr(c) + ' in version string ' + repr(s))
+            fail(f'Illegal character {c!r} in version string {s!r}')
     flush()
     return tuple(version)
 
-def version_comparitor(version1, version2):
-    iterator = itertools.zip_longest(version_splitter(version1), version_splitter(version2), fillvalue=0)
-    for i, (a, b) in enumerate(iterator):
+def version_comparator(version1: str, version2: str) -> Literal[-1, 0, 1]:
+    iterator = itertools.zip_longest(
+        version_splitter(version1), version_splitter(version2), fillvalue=0
+    )
+    for a, b in iterator:
         if a < b:
             return -1
         if a > b:
@@ -326,36 +419,36 @@ def version_comparitor(version1, version2):
 
 
 class CRenderData:
-    def __init__(self):
+    def __init__(self) -> None:
 
         # The C statements to declare variables.
         # Should be full lines with \n eol characters.
-        self.declarations = []
+        self.declarations: list[str] = []
 
         # The C statements required to initialize the variables before the parse call.
         # Should be full lines with \n eol characters.
-        self.initializers = []
+        self.initializers: list[str] = []
 
         # The C statements needed to dynamically modify the values
         # parsed by the parse call, before calling the impl.
-        self.modifications = []
+        self.modifications: list[str] = []
 
         # The entries for the "keywords" array for PyArg_ParseTuple.
         # Should be individual strings representing the names.
-        self.keywords = []
+        self.keywords: list[str] = []
 
         # The "format units" for PyArg_ParseTuple.
         # Should be individual strings that will get
-        self.format_units = []
+        self.format_units: list[str] = []
 
         # The varargs arguments for PyArg_ParseTuple.
-        self.parse_arguments = []
+        self.parse_arguments: list[str] = []
 
         # The parameter declarations for the impl function.
-        self.impl_parameters = []
+        self.impl_parameters: list[str] = []
 
         # The arguments to the impl function at the time it's called.
-        self.impl_arguments = []
+        self.impl_arguments: list[str] = []
 
         # For return converters: the name of the variable that
         # should receive the value returned by the impl.
@@ -365,17 +458,21 @@ def __init__(self):
         # value from the parse function.  This is also where
         # you should check the _return_value for errors, and
         # "goto exit" if there are any.
-        self.return_conversion = []
+        self.return_conversion: list[str] = []
         self.converter_retval = "_return_value"
 
         # The C statements required to do some operations
         # after the end of parsing but before cleaning up.
         # These operations may be, for example, memory deallocations which
         # can only be done without any error happening during argument parsing.
-        self.post_parsing = []
+        self.post_parsing: list[str] = []
 
         # The C statements required to clean up after the impl call.
-        self.cleanup = []
+        self.cleanup: list[str] = []
+
+        # The C statements to generate critical sections (per-object locking).
+        self.lock: list[str] = []
+        self.unlock: list[str] = []
 
 
 class FormatCounterFormatter(string.Formatter):
@@ -387,10 +484,12 @@ class FormatCounterFormatter(string.Formatter):
          the counts dict would now look like
          {'a': 2, 'b': 1, 'c': 1}
     """
-    def __init__(self):
-        self.counts = collections.Counter()
+    def __init__(self) -> None:
+        self.counts = collections.Counter[str]()
 
-    def get_value(self, key, args, kwargs):
+    def get_value(
+        self, key: str, args: object, kwargs: object  # type: ignore[override]
+    ) -> Literal['']:
         self.counts[key] += 1
         return ''
 
@@ -401,18 +500,25 @@ class Language(metaclass=abc.ABCMeta):
     stop_line = ""
     checksum_line = ""
 
-    def __init__(self, filename):
-        pass
+    def __init__(self, filename: str) -> None:
+        ...
 
     @abc.abstractmethod
-    def render(self, clinic, signatures):
-        pass
-
-    def parse_line(self, line):
-        pass
-
-    def validate(self):
-        def assert_only_one(attr, *additional_fields):
+    def render(
+            self,
+            clinic: Clinic | None,
+            signatures: Iterable[Module | Class | Function]
+    ) -> str:
+        ...
+
+    def parse_line(self, line: str) -> None:
+        ...
+
+    def validate(self) -> None:
+        def assert_only_one(
+                attr: str,
+                *additional_fields: str
+        ) -> None:
             """
             Ensures that the string found at getattr(self, attr)
             contains exactly one formatter replacement string for
@@ -439,10 +545,10 @@ def assert_only_one(attr, *additional_fields):
             """
             fields = ['dsl_name']
             fields.extend(additional_fields)
-            line = getattr(self, attr)
+            line: str = getattr(self, attr)
             fcf = FormatCounterFormatter()
             fcf.format(line)
-            def local_fail(should_be_there_but_isnt):
+            def local_fail(should_be_there_but_isnt: bool) -> None:
                 if should_be_there_but_isnt:
                     fail("{} {} must contain {{{}}} exactly once!".format(
                         self.__class__.__name__, attr, name))
@@ -477,37 +583,48 @@ class PythonLanguage(Language):
     checksum_line = "#/*[{dsl_name} end generated code: {arguments}]*/"
 
 
-def permute_left_option_groups(l):
+ParamTuple = tuple["Parameter", ...]
+
+
+def permute_left_option_groups(
+        l: Sequence[Iterable[Parameter]]
+) -> Iterator[ParamTuple]:
     """
-    Given [1, 2, 3], should yield:
+    Given [(1,), (2,), (3,)], should yield:
        ()
        (3,)
        (2, 3)
        (1, 2, 3)
     """
     yield tuple()
-    accumulator = []
+    accumulator: list[Parameter] = []
     for group in reversed(l):
         accumulator = list(group) + accumulator
         yield tuple(accumulator)
 
 
-def permute_right_option_groups(l):
+def permute_right_option_groups(
+        l: Sequence[Iterable[Parameter]]
+) -> Iterator[ParamTuple]:
     """
-    Given [1, 2, 3], should yield:
+    Given [(1,), (2,), (3,)], should yield:
       ()
       (1,)
       (1, 2)
       (1, 2, 3)
     """
     yield tuple()
-    accumulator = []
+    accumulator: list[Parameter] = []
     for group in l:
         accumulator.extend(group)
         yield tuple(accumulator)
 
 
-def permute_optional_groups(left, required, right):
+def permute_optional_groups(
+        left: Sequence[Iterable[Parameter]],
+        required: Iterable[Parameter],
+        right: Sequence[Iterable[Parameter]]
+) -> tuple[ParamTuple, ...]:
     """
     Generator function that computes the set of acceptable
     argument lists for the provided iterables of
@@ -518,13 +635,11 @@ def permute_optional_groups(left, required, right):
     If required is empty, left must also be empty.
     """
     required = tuple(required)
-    result = []
-
     if not required:
         if left:
             raise ValueError("required is empty but left is not")
 
-    accumulator = []
+    accumulator: list[ParamTuple] = []
     counts = set()
     for r in permute_right_option_groups(right):
         for l in permute_left_option_groups(left):
@@ -538,7 +653,7 @@ def permute_optional_groups(left, required, right):
     return tuple(accumulator)
 
 
-def strip_leading_and_trailing_blank_lines(s):
+def strip_leading_and_trailing_blank_lines(s: str) -> str:
     lines = s.rstrip().split('\n')
     while lines:
         line = lines[0]
@@ -548,7 +663,11 @@ def strip_leading_and_trailing_blank_lines(s):
     return '\n'.join(lines)
 
 @functools.lru_cache()
-def normalize_snippet(s, *, indent=0):
+def normalize_snippet(
+        s: str,
+        *,
+        indent: int = 0
+) -> str:
     """
     Reformats s:
         * removes leading and trailing blank lines
@@ -562,7 +681,13 @@ def normalize_snippet(s, *, indent=0):
     return s
 
 
-def declare_parser(f, *, hasformat=False):
+def declare_parser(
+        f: Function,
+        *,
+        hasformat: bool = False,
+        clinic: Clinic,
+        limited_capi: bool,
+) -> str:
     """
     Generates the code template for a static local PyArg_Parser variable,
     with an initializer.  For core code (incl. builtin modules) the
@@ -580,7 +705,11 @@ def declare_parser(f, *, hasformat=False):
         p for p in f.parameters.values()
         if not p.is_positional_only() and not p.is_vararg()
     ])
-    if num_keywords == 0:
+    if limited_capi:
+        declarations = """
+            #define KWTUPLE NULL
+        """
+    elif num_keywords == 0:
         declarations = """
             #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
             #  define KWTUPLE (PyObject *)&_Py_SINGLETON(tuple_empty)
@@ -609,6 +738,10 @@ def declare_parser(f, *, hasformat=False):
             #endif  // !Py_BUILD_CORE
         """ % num_keywords
 
+        condition = '#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)'
+        clinic.add_include('pycore_gc.h', 'PyGC_Head', condition=condition)
+        clinic.add_include('pycore_runtime.h', '_Py_ID()', condition=condition)
+
     declarations += """
             static const char * const _keywords[] = {{{keywords_c} NULL}};
             static _PyArg_Parser _parser = {{
@@ -621,7 +754,10 @@ def declare_parser(f, *, hasformat=False):
     return normalize_snippet(declarations)
 
 
-def wrap_declarations(text, length=78):
+def wrap_declarations(
+        text: str,
+        length: int = 78
+) -> str:
     """
     A simple-minded text wrapper for C function declarations.
 
@@ -643,14 +779,14 @@ def wrap_declarations(text, length=78):
         if not after_l_paren:
             lines.append(line)
             continue
-        parameters, _, after_r_paren = after_l_paren.partition(')')
+        in_paren, _, after_r_paren = after_l_paren.partition(')')
         if not _:
             lines.append(line)
             continue
-        if ',' not in parameters:
+        if ',' not in in_paren:
             lines.append(line)
             continue
-        parameters = [x.strip() + ", " for x in parameters.split(',')]
+        parameters = [x.strip() + ", " for x in in_paren.split(',')]
         prefix += "("
         if len(prefix) < length:
             spaces = " " * len(prefix)
@@ -682,15 +818,101 @@ class CLanguage(Language):
     stop_line     = "[{dsl_name} start generated code]*/"
     checksum_line = "/*[{dsl_name} end generated code: {arguments}]*/"
 
-    def __init__(self, filename):
+    PARSER_PROTOTYPE_KEYWORD: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, PyObject *args, PyObject *kwargs)
+    """)
+    PARSER_PROTOTYPE_KEYWORD___INIT__: Final[str] = normalize_snippet("""
+        static int
+        {c_basename}({self_type}{self_name}, PyObject *args, PyObject *kwargs)
+    """)
+    PARSER_PROTOTYPE_VARARGS: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, PyObject *args)
+    """)
+    PARSER_PROTOTYPE_FASTCALL: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, PyObject *const *args, Py_ssize_t nargs)
+    """)
+    PARSER_PROTOTYPE_FASTCALL_KEYWORDS: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+    """)
+    PARSER_PROTOTYPE_DEF_CLASS: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, PyTypeObject *{defining_class_name}, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+    """)
+    PARSER_PROTOTYPE_NOARGS: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, PyObject *Py_UNUSED(ignored))
+    """)
+    PARSER_PROTOTYPE_GETTER: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({self_type}{self_name}, void *Py_UNUSED(context))
+    """)
+    METH_O_PROTOTYPE: Final[str] = normalize_snippet("""
+        static PyObject *
+        {c_basename}({impl_parameters})
+    """)
+    DOCSTRING_PROTOTYPE_VAR: Final[str] = normalize_snippet("""
+        PyDoc_VAR({c_basename}__doc__);
+    """)
+    DOCSTRING_PROTOTYPE_STRVAR: Final[str] = normalize_snippet("""
+        PyDoc_STRVAR({c_basename}__doc__,
+        {docstring});
+    """)
+    IMPL_DEFINITION_PROTOTYPE: Final[str] = normalize_snippet("""
+        static {impl_return_type}
+        {c_basename}_impl({impl_parameters})
+    """)
+    METHODDEF_PROTOTYPE_DEFINE: Final[str] = normalize_snippet(r"""
+        #define {methoddef_name}    \
+            {{"{name}", {methoddef_cast}{c_basename}{methoddef_cast_end}, {methoddef_flags}, {c_basename}__doc__}},
+    """)
+    GETTERDEF_PROTOTYPE_DEFINE: Final[str] = normalize_snippet(r"""
+        #define {getter_name}    \
+            {{"{name}", (getter){c_basename}, NULL, NULL}},
+    """)
+    METHODDEF_PROTOTYPE_IFNDEF: Final[str] = normalize_snippet("""
+        #ifndef {methoddef_name}
+            #define {methoddef_name}
+        #endif /* !defined({methoddef_name}) */
+    """)
+    COMPILER_DEPRECATION_WARNING_PROTOTYPE: Final[str] = r"""
+        // Emit compiler warnings when we get to Python {major}.{minor}.
+        #if PY_VERSION_HEX >= 0x{major:02x}{minor:02x}00C0
+        #  error {message}
+        #elif PY_VERSION_HEX >= 0x{major:02x}{minor:02x}00A0
+        #  ifdef _MSC_VER
+        #    pragma message ({message})
+        #  else
+        #    warning {message}
+        #  endif
+        #endif
+    """
+    DEPRECATION_WARNING_PROTOTYPE: Final[str] = r"""
+        if ({condition}) {{{{{errcheck}
+            if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                    {message}, 1))
+            {{{{
+                goto exit;
+            }}}}
+        }}}}
+    """
+
+    def __init__(self, filename: str) -> None:
         super().__init__(filename)
         self.cpp = cpp.Monitor(filename)
-        self.cpp.fail = fail
+        self.cpp.fail = fail  # type: ignore[method-assign]
 
-    def parse_line(self, line):
+    def parse_line(self, line: str) -> None:
         self.cpp.writeline(line)
 
-    def render(self, clinic, signatures):
+    def render(
+            self,
+            clinic: Clinic | None,
+            signatures: Iterable[Module | Class | Function]
+    ) -> str:
         function = None
         for o in signatures:
             if isinstance(o, Function):
@@ -699,10 +921,167 @@ def render(self, clinic, signatures):
                 function = o
         return self.render_function(clinic, function)
 
-    def docstring_for_c_string(self, f):
-        if re.search(r'[^\x00-\x7F]', f.docstring):
-            warn("Non-ascii character appear in docstring.")
+    def compiler_deprecated_warning(
+            self,
+            func: Function,
+            parameters: list[Parameter],
+    ) -> str | None:
+        minversion: VersionTuple | None = None
+        for p in parameters:
+            for version in p.deprecated_positional, p.deprecated_keyword:
+                if version and (not minversion or minversion > version):
+                    minversion = version
+        if not minversion:
+            return None
+
+        # Format the preprocessor warning and error messages.
+        assert isinstance(self.cpp.filename, str)
+        message = f"Update the clinic input of {func.full_name!r}."
+        code = self.COMPILER_DEPRECATION_WARNING_PROTOTYPE.format(
+            major=minversion[0],
+            minor=minversion[1],
+            message=c_repr(message),
+        )
+        return normalize_snippet(code)
+
+    def deprecate_positional_use(
+            self,
+            func: Function,
+            params: dict[int, Parameter],
+    ) -> str:
+        assert len(params) > 0
+        first_pos = next(iter(params))
+        last_pos = next(reversed(params))
+
+        # Format the deprecation message.
+        if len(params) == 1:
+            condition = f"nargs == {first_pos+1}"
+            amount = f"{first_pos+1} " if first_pos else ""
+            pl = "s"
+        else:
+            condition = f"nargs > {first_pos} && nargs <= {last_pos+1}"
+            amount = f"more than {first_pos} " if first_pos else ""
+            pl = "s" if first_pos != 1 else ""
+        message = (
+            f"Passing {amount}positional argument{pl} to "
+            f"{func.fulldisplayname}() is deprecated."
+        )
+
+        for (major, minor), group in itertools.groupby(
+            params.values(), key=attrgetter("deprecated_positional")
+        ):
+            names = [repr(p.name) for p in group]
+            pstr = pprint_words(names)
+            if len(names) == 1:
+                message += (
+                    f" Parameter {pstr} will become a keyword-only parameter "
+                    f"in Python {major}.{minor}."
+                )
+            else:
+                message += (
+                    f" Parameters {pstr} will become keyword-only parameters "
+                    f"in Python {major}.{minor}."
+                )
+
+        # Append deprecation warning to docstring.
+        docstring = textwrap.fill(f"Note: {message}")
+        func.docstring += f"\n\n{docstring}\n"
+        # Format and return the code block.
+        code = self.DEPRECATION_WARNING_PROTOTYPE.format(
+            condition=condition,
+            errcheck="",
+            message=wrapped_c_string_literal(message, width=64,
+                                             subsequent_indent=20),
+        )
+        return normalize_snippet(code, indent=4)
+
+    def deprecate_keyword_use(
+            self,
+            func: Function,
+            params: dict[int, Parameter],
+            argname_fmt: str | None,
+            *,
+            fastcall: bool,
+            limited_capi: bool,
+            clinic: Clinic,
+    ) -> str:
+        assert len(params) > 0
+        last_param = next(reversed(params.values()))
+
+        # Format the deprecation message.
+        containscheck = ""
+        conditions = []
+        for i, p in params.items():
+            if p.is_optional():
+                if argname_fmt:
+                    conditions.append(f"nargs < {i+1} && {argname_fmt % i}")
+                elif fastcall:
+                    conditions.append(f"nargs < {i+1} && PySequence_Contains(kwnames, &_Py_ID({p.name}))")
+                    containscheck = "PySequence_Contains"
+                    clinic.add_include('pycore_runtime.h', '_Py_ID()')
+                else:
+                    conditions.append(f"nargs < {i+1} && PyDict_Contains(kwargs, &_Py_ID({p.name}))")
+                    containscheck = "PyDict_Contains"
+                    clinic.add_include('pycore_runtime.h', '_Py_ID()')
+            else:
+                conditions = [f"nargs < {i+1}"]
+        condition = ") || (".join(conditions)
+        if len(conditions) > 1:
+            condition = f"(({condition}))"
+        if last_param.is_optional():
+            if fastcall:
+                if limited_capi:
+                    condition = f"kwnames && PyTuple_Size(kwnames) && {condition}"
+                else:
+                    condition = f"kwnames && PyTuple_GET_SIZE(kwnames) && {condition}"
+            else:
+                if limited_capi:
+                    condition = f"kwargs && PyDict_Size(kwargs) && {condition}"
+                else:
+                    condition = f"kwargs && PyDict_GET_SIZE(kwargs) && {condition}"
+        names = [repr(p.name) for p in params.values()]
+        pstr = pprint_words(names)
+        pl = 's' if len(params) != 1 else ''
+        message = (
+            f"Passing keyword argument{pl} {pstr} to "
+            f"{func.fulldisplayname}() is deprecated."
+        )
+
+        for (major, minor), group in itertools.groupby(
+            params.values(), key=attrgetter("deprecated_keyword")
+        ):
+            names = [repr(p.name) for p in group]
+            pstr = pprint_words(names)
+            pl = 's' if len(names) != 1 else ''
+            message += (
+                f" Parameter{pl} {pstr} will become positional-only "
+                f"in Python {major}.{minor}."
+            )
+
+        if containscheck:
+            errcheck = f"""
+            if (PyErr_Occurred()) {{{{ // {containscheck}() above can fail
+                goto exit;
+            }}}}"""
+        else:
+            errcheck = ""
+        if argname_fmt:
+            # Append deprecation warning to docstring.
+            docstring = textwrap.fill(f"Note: {message}")
+            func.docstring += f"\n\n{docstring}\n"
+        # Format and return the code block.
+        code = self.DEPRECATION_WARNING_PROTOTYPE.format(
+            condition=condition,
+            errcheck=errcheck,
+            message=wrapped_c_string_literal(message, width=64,
+                                             subsequent_indent=20),
+        )
+        return normalize_snippet(code, indent=4)
 
+    def docstring_for_c_string(
+            self,
+            f: Function
+    ) -> str:
         text, add, output = _text_accumulator()
         # turn docstring into a properly quoted C string
         for line in f.docstring.split('\n'):
@@ -719,24 +1098,35 @@ def docstring_for_c_string(self, f):
             add('"')
         return ''.join(text)
 
-    def output_templates(self, f):
+    def output_templates(
+            self,
+            f: Function,
+            clinic: Clinic
+    ) -> dict[str, str]:
         parameters = list(f.parameters.values())
         assert parameters
-        assert isinstance(parameters[0].converter, self_converter)
-        del parameters[0]
+        first_param = parameters.pop(0)
+        assert isinstance(first_param.converter, self_converter)
         requires_defining_class = False
         if parameters and isinstance(parameters[0].converter, defining_class_converter):
             requires_defining_class = True
             del parameters[0]
         converters = [p.converter for p in parameters]
 
+        # Copy includes from parameters to Clinic
+        for converter in converters:
+            include = converter.include
+            if include:
+                clinic.add_include(include.filename, include.reason,
+                                   condition=include.condition)
+        if f.critical_section:
+            clinic.add_include('pycore_critical_section.h', 'Py_BEGIN_CRITICAL_SECTION()')
         has_option_groups = parameters and (parameters[0].group or parameters[-1].group)
-        default_return_converter = (not f.return_converter or
-            f.return_converter.type == 'PyObject *')
+        simple_return = (f.return_converter.type == 'PyObject *'
+                         and not f.critical_section)
+        new_or_init = f.kind.new_or_init
 
-        new_or_init = f.kind in (METHOD_NEW, METHOD_INIT)
-
-        vararg = NO_VARARG
+        vararg: int | str = NO_VARARG
         pos_only = min_pos = max_pos = min_kw_only = pseudo_args = 0
         for i, p in enumerate(parameters, 1):
             if p.is_keyword_only():
@@ -776,73 +1166,43 @@ def output_templates(self, f):
         # methoddef_ifndef
 
         return_value_declaration = "PyObject *return_value = NULL;"
-
-        methoddef_define = normalize_snippet("""
-            #define {methoddef_name}    \\
-                {{"{name}", {methoddef_cast}{c_basename}{methoddef_cast_end}, {methoddef_flags}, {c_basename}__doc__}},
-            """)
+        methoddef_define = self.METHODDEF_PROTOTYPE_DEFINE
         if new_or_init and not f.docstring:
             docstring_prototype = docstring_definition = ''
+        elif f.kind is GETTER:
+            methoddef_define = self.GETTERDEF_PROTOTYPE_DEFINE
+            docstring_prototype = docstring_definition = ''
         else:
-            docstring_prototype = normalize_snippet("""
-                PyDoc_VAR({c_basename}__doc__);
-                """)
-            docstring_definition = normalize_snippet("""
-                PyDoc_STRVAR({c_basename}__doc__,
-                {docstring});
-                """)
-        impl_definition = normalize_snippet("""
-            static {impl_return_type}
-            {c_basename}_impl({impl_parameters})
-            """)
+            docstring_prototype = self.DOCSTRING_PROTOTYPE_VAR
+            docstring_definition = self.DOCSTRING_PROTOTYPE_STRVAR
+        impl_definition = self.IMPL_DEFINITION_PROTOTYPE
         impl_prototype = parser_prototype = parser_definition = None
 
-        parser_prototype_keyword = normalize_snippet("""
-            static PyObject *
-            {c_basename}({self_type}{self_name}, PyObject *args, PyObject *kwargs)
-            """)
-
-        parser_prototype_varargs = normalize_snippet("""
-            static PyObject *
-            {c_basename}({self_type}{self_name}, PyObject *args)
-            """)
-
-        parser_prototype_fastcall = normalize_snippet("""
-            static PyObject *
-            {c_basename}({self_type}{self_name}, PyObject *const *args, Py_ssize_t nargs)
-            """)
-
-        parser_prototype_fastcall_keywords = normalize_snippet("""
-            static PyObject *
-            {c_basename}({self_type}{self_name}, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-            """)
-
-        parser_prototype_def_class = normalize_snippet("""
-            static PyObject *
-            {c_basename}({self_type}{self_name}, PyTypeObject *{defining_class_name}, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
-        """)
-
         # parser_body_fields remembers the fields passed in to the
         # previous call to parser_body. this is used for an awful hack.
-        parser_body_fields = ()
-        def parser_body(prototype, *fields, declarations=''):
+        parser_body_fields: tuple[str, ...] = ()
+        def parser_body(
+                prototype: str,
+                *fields: str,
+                declarations: str = ''
+        ) -> str:
             nonlocal parser_body_fields
             add, output = text_accumulator()
             add(prototype)
             parser_body_fields = fields
 
-            fields = list(fields)
-            fields.insert(0, normalize_snippet("""
+            preamble = normalize_snippet("""
                 {{
                     {return_value_declaration}
                     {parser_declarations}
                     {declarations}
                     {initializers}
-                """) + "\n")
-            # just imagine--your code is here in the middle
-            fields.append(normalize_snippet("""
+            """) + "\n"
+            finale = normalize_snippet("""
                     {modifications}
+                    {lock}
                     {return_value} = {c_basename}_impl({impl_arguments});
+                    {unlock}
                     {return_conversion}
                     {post_parsing}
 
@@ -850,30 +1210,39 @@ def parser_body(prototype, *fields, declarations=''):
                     {cleanup}
                     return return_value;
                 }}
-                """))
-            for field in fields:
+            """)
+            for field in preamble, *fields, finale:
                 add('\n')
                 add(field)
             return linear_format(output(), parser_declarations=declarations)
 
+        fastcall = not new_or_init
+        limited_capi = clinic.limited_capi
+        if limited_capi and (pseudo_args or
+                (any(p.is_optional() for p in parameters) and
+                 any(p.is_keyword_only() and not p.is_optional() for p in parameters)) or
+                any(c.broken_limited_capi for c in converters)):
+            warn(f"Function {f.full_name} cannot use limited C API")
+            limited_capi = False
+
+        parsearg: str | None
         if not parameters:
-            if not requires_defining_class:
+            parser_code: list[str] | None
+            if f.kind is GETTER:
+                flags = "" # This should end up unused
+                parser_prototype = self.PARSER_PROTOTYPE_GETTER
+                parser_code = []
+            elif not requires_defining_class:
                 # no parameters, METH_NOARGS
                 flags = "METH_NOARGS"
-
-                parser_prototype = normalize_snippet("""
-                    static PyObject *
-                    {c_basename}({self_type}{self_name}, PyObject *Py_UNUSED(ignored))
-                    """)
+                parser_prototype = self.PARSER_PROTOTYPE_NOARGS
                 parser_code = []
-
             else:
-                assert not new_or_init
+                assert fastcall
 
                 flags = "METH_METHOD|METH_FASTCALL|METH_KEYWORDS"
-
-                parser_prototype = parser_prototype_def_class
-                return_error = ('return NULL;' if default_return_converter
+                parser_prototype = self.PARSER_PROTOTYPE_DEF_CLASS
+                return_error = ('return NULL;' if simple_return
                                 else 'goto exit;')
                 parser_code = [normalize_snippet("""
                     if (nargs) {{
@@ -882,7 +1251,7 @@ def parser_body(prototype, *fields, declarations=''):
                     }}
                     """ % return_error, indent=4)]
 
-            if default_return_converter:
+            if simple_return:
                 parser_definition = '\n'.join([
                     parser_prototype,
                     '{{',
@@ -897,12 +1266,9 @@ def parser_body(prototype, *fields, declarations=''):
 
             if (isinstance(converters[0], object_converter) and
                 converters[0].format_unit == 'O'):
-                meth_o_prototype = normalize_snippet("""
-                    static PyObject *
-                    {c_basename}({impl_parameters})
-                    """)
+                meth_o_prototype = self.METH_O_PROTOTYPE
 
-                if default_return_converter:
+                if simple_return:
                     # maps perfectly to METH_O, doesn't need a return converter.
                     # so we skip making a parse function
                     # and call directly into the impl function.
@@ -924,7 +1290,7 @@ def parser_body(prototype, *fields, declarations=''):
                     """ % argname)
 
                 displayname = parameters[0].get_displayname(0)
-                parsearg = converters[0].parse_arg(argname, displayname)
+                parsearg = converters[0].parse_arg(argname, displayname, limited_capi=limited_capi)
                 if parsearg is None:
                     parsearg = """
                         if (!PyArg_Parse(%s, "{format_units}:{name}", {parse_arguments})) {{
@@ -940,17 +1306,16 @@ def parser_body(prototype, *fields, declarations=''):
             #  in a big switch statement)
 
             flags = "METH_VARARGS"
-            parser_prototype = parser_prototype_varargs
-
+            parser_prototype = self.PARSER_PROTOTYPE_VARARGS
             parser_definition = parser_body(parser_prototype, '    {option_group_parsing}')
 
         elif not requires_defining_class and pos_only == len(parameters) - pseudo_args:
-            if not new_or_init:
+            if fastcall:
                 # positional-only, but no option groups
                 # we only need one call to _PyArg_ParseStack
 
                 flags = "METH_FASTCALL"
-                parser_prototype = parser_prototype_fastcall
+                parser_prototype = self.PARSER_PROTOTYPE_FASTCALL
                 nargs = 'nargs'
                 argname_fmt = 'args[%d]'
             else:
@@ -958,26 +1323,62 @@ def parser_body(prototype, *fields, declarations=''):
                 # we only need one call to PyArg_ParseTuple
 
                 flags = "METH_VARARGS"
-                parser_prototype = parser_prototype_varargs
-                nargs = 'PyTuple_GET_SIZE(args)'
-                argname_fmt = 'PyTuple_GET_ITEM(args, %d)'
-
+                parser_prototype = self.PARSER_PROTOTYPE_VARARGS
+                if limited_capi:
+                    nargs = 'PyTuple_Size(args)'
+                    argname_fmt = 'PyTuple_GetItem(args, %d)'
+                else:
+                    nargs = 'PyTuple_GET_SIZE(args)'
+                    argname_fmt = 'PyTuple_GET_ITEM(args, %d)'
 
-            left_args = "{} - {}".format(nargs, max_pos)
+            left_args = f"{nargs} - {max_pos}"
             max_args = NO_VARARG if (vararg != NO_VARARG) else max_pos
-            parser_code = [normalize_snippet("""
-                if (!_PyArg_CheckPositional("{name}", %s, %d, %s)) {{
-                    goto exit;
-                }}
-                """ % (nargs, min_pos, max_args), indent=4)]
+            if limited_capi:
+                parser_code = []
+                if nargs != 'nargs':
+                    parser_code.append(normalize_snippet(f'Py_ssize_t nargs = {nargs};', indent=4))
+                    nargs = 'nargs'
+                if min_pos == max_args:
+                    pl = '' if min_pos == 1 else 's'
+                    parser_code.append(normalize_snippet(f"""
+                        if ({nargs} != {min_pos}) {{{{
+                            PyErr_Format(PyExc_TypeError, "{{name}} expected {min_pos} argument{pl}, got %zd", {nargs});
+                            goto exit;
+                        }}}}
+                        """,
+                    indent=4))
+                else:
+                    if min_pos:
+                        pl = '' if min_pos == 1 else 's'
+                        parser_code.append(normalize_snippet(f"""
+                            if ({nargs} < {min_pos}) {{{{
+                                PyErr_Format(PyExc_TypeError, "{{name}} expected at least {min_pos} argument{pl}, got %zd", {nargs});
+                                goto exit;
+                            }}}}
+                            """,
+                            indent=4))
+                    if max_args != NO_VARARG:
+                        pl = '' if max_args == 1 else 's'
+                        parser_code.append(normalize_snippet(f"""
+                            if ({nargs} > {max_args}) {{{{
+                                PyErr_Format(PyExc_TypeError, "{{name}} expected at most {max_args} argument{pl}, got %zd", {nargs});
+                                goto exit;
+                            }}}}
+                            """,
+                        indent=4))
+            else:
+                clinic.add_include('pycore_modsupport.h',
+                                   '_PyArg_CheckPositional()')
+                parser_code = [normalize_snippet(f"""
+                    if (!_PyArg_CheckPositional("{{name}}", {nargs}, {min_pos}, {max_args})) {{{{
+                        goto exit;
+                    }}}}
+                    """, indent=4)]
 
             has_optional = False
             for i, p in enumerate(parameters):
-                displayname = p.get_displayname(i+1)
-                argname = argname_fmt % i
-
                 if p.is_vararg():
-                    if not new_or_init:
+                    if fastcall:
                         parser_code.append(normalize_snippet("""
                             %s = PyTuple_New(%s);
                             if (!%s) {{
@@ -1003,9 +1404,10 @@ def parser_body(prototype, *fields, declarations=''):
                             ), indent=4))
                     continue
 
-                parsearg = p.converter.parse_arg(argname, displayname)
+                displayname = p.get_displayname(i+1)
+                argname = argname_fmt % i
+                parsearg = p.converter.parse_arg(argname, displayname, limited_capi=limited_capi)
                 if parsearg is None:
-                    #print('Cannot convert %s %r for %s' % (p.converter.__class__.__name__, p.converter.format_unit, p.converter.name), file=sys.stderr)
                     parser_code = None
                     break
                 if has_optional or p.is_optional():
@@ -1021,7 +1423,11 @@ def parser_body(prototype, *fields, declarations=''):
                 if has_optional:
                     parser_code.append("skip_optional:")
             else:
-                if not new_or_init:
+                if limited_capi:
+                    fastcall = False
+                if fastcall:
+                    clinic.add_include('pycore_modsupport.h',
+                                       '_PyArg_ParseStack()')
                     parser_code = [normalize_snippet("""
                         if (!_PyArg_ParseStack(args, nargs, "{format_units}:{name}",
                             {parse_arguments})) {{
@@ -1029,6 +1435,8 @@ def parser_body(prototype, *fields, declarations=''):
                         }}
                         """, indent=4)]
                 else:
+                    flags = "METH_VARARGS"
+                    parser_prototype = self.PARSER_PROTOTYPE_VARARGS
                     parser_code = [normalize_snippet("""
                         if (!PyArg_ParseTuple(args, "{format_units}:{name}",
                             {parse_arguments})) {{
@@ -1038,123 +1446,168 @@ def parser_body(prototype, *fields, declarations=''):
             parser_definition = parser_body(parser_prototype, *parser_code)
 
         else:
+            deprecated_positionals: dict[int, Parameter] = {}
+            deprecated_keywords: dict[int, Parameter] = {}
+            for i, p in enumerate(parameters):
+                if p.deprecated_positional:
+                    deprecated_positionals[i] = p
+                if p.deprecated_keyword:
+                    deprecated_keywords[i] = p
+
             has_optional_kw = (max(pos_only, min_pos) + min_kw_only < len(converters) - int(vararg != NO_VARARG))
-            if vararg == NO_VARARG:
-                args_declaration = "_PyArg_UnpackKeywords", "%s, %s, %s" % (
-                    min_pos,
-                    max_pos,
-                    min_kw_only
-                )
-                nargs = "nargs"
-            else:
-                args_declaration = "_PyArg_UnpackKeywordsWithVararg", "%s, %s, %s, %s" % (
-                    min_pos,
-                    max_pos,
-                    min_kw_only,
-                    vararg
-                )
-                nargs = f"Py_MIN(nargs, {max_pos})" if max_pos else "0"
-            if not new_or_init:
-                flags = "METH_FASTCALL|METH_KEYWORDS"
-                parser_prototype = parser_prototype_fastcall_keywords
-                argname_fmt = 'args[%d]'
-                declarations = declare_parser(f)
-                declarations += "\nPyObject *argsbuf[%s];" % len(converters)
-                if has_optional_kw:
-                    declarations += "\nPy_ssize_t noptargs = %s + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - %d;" % (nargs, min_pos + min_kw_only)
-                parser_code = [normalize_snippet("""
-                    args = %s(args, nargs, NULL, kwnames, &_parser, %s, argsbuf);
-                    if (!args) {{
-                        goto exit;
-                    }}
-                    """ % args_declaration, indent=4)]
+
+            if limited_capi:
+                parser_code = None
+                fastcall = False
             else:
-                # positional-or-keyword arguments
-                flags = "METH_VARARGS|METH_KEYWORDS"
-                parser_prototype = parser_prototype_keyword
-                argname_fmt = 'fastargs[%d]'
-                declarations = declare_parser(f)
-                declarations += "\nPyObject *argsbuf[%s];" % len(converters)
-                declarations += "\nPyObject * const *fastargs;"
-                declarations += "\nPy_ssize_t nargs = PyTuple_GET_SIZE(args);"
-                if has_optional_kw:
-                    declarations += "\nPy_ssize_t noptargs = %s + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - %d;" % (nargs, min_pos + min_kw_only)
-                parser_code = [normalize_snippet("""
-                    fastargs = %s(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, %s, argsbuf);
-                    if (!fastargs) {{
-                        goto exit;
-                    }}
-                    """ % args_declaration, indent=4)]
+                if vararg == NO_VARARG:
+                    clinic.add_include('pycore_modsupport.h',
+                                       '_PyArg_UnpackKeywords()')
+                    args_declaration = "_PyArg_UnpackKeywords", "%s, %s, %s" % (
+                        min_pos,
+                        max_pos,
+                        min_kw_only
+                    )
+                    nargs = "nargs"
+                else:
+                    clinic.add_include('pycore_modsupport.h',
+                                       '_PyArg_UnpackKeywordsWithVararg()')
+                    args_declaration = "_PyArg_UnpackKeywordsWithVararg", "%s, %s, %s, %s" % (
+                        min_pos,
+                        max_pos,
+                        min_kw_only,
+                        vararg
+                    )
+                    nargs = f"Py_MIN(nargs, {max_pos})" if max_pos else "0"
+
+                if fastcall:
+                    flags = "METH_FASTCALL|METH_KEYWORDS"
+                    parser_prototype = self.PARSER_PROTOTYPE_FASTCALL_KEYWORDS
+                    argname_fmt = 'args[%d]'
+                    declarations = declare_parser(f, clinic=clinic,
+                                                  limited_capi=clinic.limited_capi)
+                    declarations += "\nPyObject *argsbuf[%s];" % len(converters)
+                    if has_optional_kw:
+                        declarations += "\nPy_ssize_t noptargs = %s + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - %d;" % (nargs, min_pos + min_kw_only)
+                    parser_code = [normalize_snippet("""
+                        args = %s(args, nargs, NULL, kwnames, &_parser, %s, argsbuf);
+                        if (!args) {{
+                            goto exit;
+                        }}
+                        """ % args_declaration, indent=4)]
+                else:
+                    # positional-or-keyword arguments
+                    flags = "METH_VARARGS|METH_KEYWORDS"
+                    parser_prototype = self.PARSER_PROTOTYPE_KEYWORD
+                    argname_fmt = 'fastargs[%d]'
+                    declarations = declare_parser(f, clinic=clinic,
+                                                  limited_capi=clinic.limited_capi)
+                    declarations += "\nPyObject *argsbuf[%s];" % len(converters)
+                    declarations += "\nPyObject * const *fastargs;"
+                    declarations += "\nPy_ssize_t nargs = PyTuple_GET_SIZE(args);"
+                    if has_optional_kw:
+                        declarations += "\nPy_ssize_t noptargs = %s + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - %d;" % (nargs, min_pos + min_kw_only)
+                    parser_code = [normalize_snippet("""
+                        fastargs = %s(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, %s, argsbuf);
+                        if (!fastargs) {{
+                            goto exit;
+                        }}
+                        """ % args_declaration, indent=4)]
 
             if requires_defining_class:
                 flags = 'METH_METHOD|' + flags
-                parser_prototype = parser_prototype_def_class
+                parser_prototype = self.PARSER_PROTOTYPE_DEF_CLASS
 
-            add_label = None
-            for i, p in enumerate(parameters):
-                if isinstance(p.converter, defining_class_converter):
-                    raise ValueError("defining_class should be the first "
-                                     "parameter (after self)")
-                displayname = p.get_displayname(i+1)
-                parsearg = p.converter.parse_arg(argname_fmt % i, displayname)
-                if parsearg is None:
-                    #print('Cannot convert %s %r for %s' % (p.converter.__class__.__name__, p.converter.format_unit, p.converter.name), file=sys.stderr)
-                    parser_code = None
-                    break
-                if add_label and (i == pos_only or i == max_pos):
-                    parser_code.append("%s:" % add_label)
-                    add_label = None
-                if not p.is_optional():
-                    parser_code.append(normalize_snippet(parsearg, indent=4))
-                elif i < pos_only:
-                    add_label = 'skip_optional_posonly'
-                    parser_code.append(normalize_snippet("""
-                        if (nargs < %d) {{
-                            goto %s;
-                        }}
-                        """ % (i + 1, add_label), indent=4))
-                    if has_optional_kw:
-                        parser_code.append(normalize_snippet("""
-                            noptargs--;
-                            """, indent=4))
-                    parser_code.append(normalize_snippet(parsearg, indent=4))
-                else:
-                    if i < max_pos:
-                        label = 'skip_optional_pos'
-                        first_opt = max(min_pos, pos_only)
-                    else:
-                        label = 'skip_optional_kwonly'
-                        first_opt = max_pos + min_kw_only
-                        if vararg != NO_VARARG:
-                            first_opt += 1
-                    if i == first_opt:
-                        add_label = label
+            if parser_code is not None:
+                if deprecated_keywords:
+                    code = self.deprecate_keyword_use(f, deprecated_keywords, argname_fmt,
+                                                      clinic=clinic,
+                                                      fastcall=fastcall,
+                                                      limited_capi=limited_capi)
+                    parser_code.append(code)
+
+                add_label: str | None = None
+                for i, p in enumerate(parameters):
+                    if isinstance(p.converter, defining_class_converter):
+                        raise ValueError("defining_class should be the first "
+                                        "parameter (after self)")
+                    displayname = p.get_displayname(i+1)
+                    parsearg = p.converter.parse_arg(argname_fmt % i, displayname, limited_capi=limited_capi)
+                    if parsearg is None:
+                        parser_code = None
+                        break
+                    if add_label and (i == pos_only or i == max_pos):
+                        parser_code.append("%s:" % add_label)
+                        add_label = None
+                    if not p.is_optional():
+                        parser_code.append(normalize_snippet(parsearg, indent=4))
+                    elif i < pos_only:
+                        add_label = 'skip_optional_posonly'
                         parser_code.append(normalize_snippet("""
-                            if (!noptargs) {{
+                            if (nargs < %d) {{
                                 goto %s;
                             }}
-                            """ % add_label, indent=4))
-                    if i + 1 == len(parameters):
+                            """ % (i + 1, add_label), indent=4))
+                        if has_optional_kw:
+                            parser_code.append(normalize_snippet("""
+                                noptargs--;
+                                """, indent=4))
                         parser_code.append(normalize_snippet(parsearg, indent=4))
                     else:
-                        add_label = label
-                        parser_code.append(normalize_snippet("""
-                            if (%s) {{
-                            """ % (argname_fmt % i), indent=4))
-                        parser_code.append(normalize_snippet(parsearg, indent=8))
-                        parser_code.append(normalize_snippet("""
-                                if (!--noptargs) {{
+                        if i < max_pos:
+                            label = 'skip_optional_pos'
+                            first_opt = max(min_pos, pos_only)
+                        else:
+                            label = 'skip_optional_kwonly'
+                            first_opt = max_pos + min_kw_only
+                            if vararg != NO_VARARG:
+                                first_opt += 1
+                        if i == first_opt:
+                            add_label = label
+                            parser_code.append(normalize_snippet("""
+                                if (!noptargs) {{
                                     goto %s;
                                 }}
-                            }}
-                            """ % add_label, indent=4))
+                                """ % add_label, indent=4))
+                        if i + 1 == len(parameters):
+                            parser_code.append(normalize_snippet(parsearg, indent=4))
+                        else:
+                            add_label = label
+                            parser_code.append(normalize_snippet("""
+                                if (%s) {{
+                                """ % (argname_fmt % i), indent=4))
+                            parser_code.append(normalize_snippet(parsearg, indent=8))
+                            parser_code.append(normalize_snippet("""
+                                    if (!--noptargs) {{
+                                        goto %s;
+                                    }}
+                                }}
+                                """ % add_label, indent=4))
 
             if parser_code is not None:
                 if add_label:
                     parser_code.append("%s:" % add_label)
             else:
-                declarations = declare_parser(f, hasformat=True)
-                if not new_or_init:
+                declarations = declare_parser(f, clinic=clinic,
+                                              hasformat=True,
+                                              limited_capi=limited_capi)
+                if limited_capi:
+                    # positional-or-keyword arguments
+                    assert not fastcall
+                    flags = "METH_VARARGS|METH_KEYWORDS"
+                    parser_prototype = self.PARSER_PROTOTYPE_KEYWORD
+                    parser_code = [normalize_snippet("""
+                        if (!PyArg_ParseTupleAndKeywords(args, kwargs, "{format_units}:{name}", _keywords,
+                            {parse_arguments}))
+                            goto exit;
+                    """, indent=4)]
+                    declarations = "static char *_keywords[] = {{{keywords_c} NULL}};"
+                    if deprecated_positionals or deprecated_keywords:
+                        declarations += "\nPy_ssize_t nargs = PyTuple_Size(args);"
+
+                elif fastcall:
+                    clinic.add_include('pycore_modsupport.h',
+                                       '_PyArg_ParseStackAndKeywords()')
                     parser_code = [normalize_snippet("""
                         if (!_PyArg_ParseStackAndKeywords(args, nargs, kwnames, &_parser{parse_arguments_comma}
                             {parse_arguments})) {{
@@ -1162,12 +1615,29 @@ def parser_body(prototype, *fields, declarations=''):
                         }}
                         """, indent=4)]
                 else:
+                    clinic.add_include('pycore_modsupport.h',
+                                       '_PyArg_ParseTupleAndKeywordsFast()')
                     parser_code = [normalize_snippet("""
                         if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
                             {parse_arguments})) {{
                             goto exit;
                         }}
                         """, indent=4)]
+                    if deprecated_positionals or deprecated_keywords:
+                        declarations += "\nPy_ssize_t nargs = PyTuple_GET_SIZE(args);"
+                if deprecated_keywords:
+                    code = self.deprecate_keyword_use(f, deprecated_keywords, None,
+                                                      clinic=clinic,
+                                                      fastcall=fastcall,
+                                                      limited_capi=limited_capi)
+                    parser_code.append(code)
+
+            if deprecated_positionals:
+                code = self.deprecate_positional_use(f, deprecated_positionals)
+                # Insert the deprecation code before parameter parsing.
+                parser_code.insert(0, code)
+
+            assert parser_prototype is not None
             parser_definition = parser_body(parser_prototype, *parser_code,
                                             declarations=declarations)
 
@@ -1175,14 +1645,11 @@ def parser_body(prototype, *fields, declarations=''):
         if new_or_init:
             methoddef_define = ''
 
-            if f.kind == METHOD_NEW:
-                parser_prototype = parser_prototype_keyword
+            if f.kind is METHOD_NEW:
+                parser_prototype = self.PARSER_PROTOTYPE_KEYWORD
             else:
                 return_value_declaration = "int return_value = -1;"
-                parser_prototype = normalize_snippet("""
-                    static int
-                    {c_basename}({self_type}{self_name}, PyObject *args, PyObject *kwargs)
-                    """)
+                parser_prototype = self.PARSER_PROTOTYPE_KEYWORD___INIT__
 
             fields = list(parser_body_fields)
             parses_positional = 'METH_NOARGS' not in flags
@@ -1195,12 +1662,16 @@ def parser_body(prototype, *fields, declarations=''):
 
             if not parses_keywords:
                 declarations = '{base_type_ptr}'
+                clinic.add_include('pycore_modsupport.h',
+                                   '_PyArg_NoKeywords()')
                 fields.insert(0, normalize_snippet("""
                     if ({self_type_check}!_PyArg_NoKeywords("{name}", kwargs)) {{
                         goto exit;
                     }}
                     """, indent=4))
                 if not parses_positional:
+                    clinic.add_include('pycore_modsupport.h',
+                                       '_PyArg_NoPositional()')
                     fields.insert(0, normalize_snippet("""
                         if ({self_type_check}!_PyArg_NoPositional("{name}", args)) {{
                             goto exit;
@@ -1211,9 +1682,13 @@ def parser_body(prototype, *fields, declarations=''):
                                             declarations=declarations)
 
 
+        methoddef_cast_end = ""
         if flags in ('METH_NOARGS', 'METH_O', 'METH_VARARGS'):
             methoddef_cast = "(PyCFunction)"
-            methoddef_cast_end = ""
+        elif f.kind is GETTER:
+            methoddef_cast = "" # This should end up unused
+        elif limited_capi:
+            methoddef_cast = "(PyCFunction)(void(*)(void))"
         else:
             methoddef_cast = "_PyCFunction_CAST("
             methoddef_cast_end = ")"
@@ -1235,12 +1710,7 @@ def parser_body(prototype, *fields, declarations=''):
 
             if methoddef_define and f.full_name not in clinic.ifndef_symbols:
                 clinic.ifndef_symbols.add(f.full_name)
-                methoddef_ifndef = normalize_snippet("""
-                    #ifndef {methoddef_name}
-                        #define {methoddef_name}
-                    #endif /* !defined({methoddef_name}) */
-                    """)
-
+                methoddef_ifndef = self.METHODDEF_PROTOTYPE_IFNDEF
 
         # add ';' to the end of parser_prototype and impl_prototype
         # (they mustn't be None, but they could be an empty string.)
@@ -1256,6 +1726,10 @@ def parser_body(prototype, *fields, declarations=''):
 
         parser_definition = parser_definition.replace("{return_value_declaration}", return_value_declaration)
 
+        compiler_warning = self.compiler_deprecated_warning(f, parameters)
+        if compiler_warning:
+            parser_definition = compiler_warning + "\n\n" + parser_definition
+
         d = {
             "docstring_prototype" : docstring_prototype,
             "docstring_definition" : docstring_definition,
@@ -1280,11 +1754,16 @@ def parser_body(prototype, *fields, declarations=''):
         return d2
 
     @staticmethod
-    def group_to_variable_name(group):
+    def group_to_variable_name(group: int) -> str:
         adjective = "left_" if group < 0 else "right_"
         return "group_" + adjective + str(abs(group))
 
-    def render_option_group_parsing(self, f, template_dict):
+    def render_option_group_parsing(
+            self,
+            f: Function,
+            template_dict: TemplateDict,
+            limited_capi: bool,
+    ) -> None:
         # positional only, grouped, optional arguments!
         # can be optional on the left or right.
         # here's an example:
@@ -1308,12 +1787,11 @@ def render_option_group_parsing(self, f, template_dict):
         if isinstance(parameters[0].converter, self_converter):
             del parameters[0]
 
-        groups = []
-        group = None
+        group: list[Parameter] | None = None
         left = []
         right = []
-        required = []
-        last = unspecified
+        required: list[Parameter] = []
+        last: int | Literal[Sentinels.unspecified] = unspecified
 
         for p in parameters:
             group_id = p.group
@@ -1326,12 +1804,17 @@ def render_option_group_parsing(self, f, template_dict):
                     group = required
                 else:
                     right.append(group)
+            assert group is not None
             group.append(p)
 
         count_min = sys.maxsize
         count_max = -1
 
-        add("switch (PyTuple_GET_SIZE(args)) {\n")
+        if limited_capi:
+            nargs = 'PyTuple_Size(args)'
+        else:
+            nargs = 'PyTuple_GET_SIZE(args)'
+        add(f"switch ({nargs}) {{\n")
         for subset in permute_optional_groups(left, required, right):
             count = len(subset)
             count_min = min(count_min, count)
@@ -1344,19 +1827,21 @@ def render_option_group_parsing(self, f, template_dict):
                 continue
 
             group_ids = {p.group for p in subset}  # eliminate duplicates
-            d = {}
+            d: dict[str, str | int] = {}
             d['count'] = count
             d['name'] = f.name
             d['format_units'] = "".join(p.converter.format_unit for p in subset)
 
-            parse_arguments = []
+            parse_arguments: list[str] = []
             for p in subset:
                 p.converter.parse_argument(parse_arguments)
             d['parse_arguments'] = ", ".join(parse_arguments)
 
             group_ids.discard(0)
-            lines = [self.group_to_variable_name(g) + " = 1;" for g in group_ids]
-            lines = "\n".join(lines)
+            lines = "\n".join([
+                self.group_to_variable_name(g) + " = 1;"
+                for g in group_ids
+            ])
 
             s = """\
     case {count}:
@@ -1377,8 +1862,12 @@ def render_option_group_parsing(self, f, template_dict):
         add("}")
         template_dict['option_group_parsing'] = format_escape(output())
 
-    def render_function(self, clinic, f):
-        if not f:
+    def render_function(
+            self,
+            clinic: Clinic | None,
+            f: Function | None
+    ) -> str:
+        if f is None or clinic is None:
             return ""
 
         add, output = text_accumulator()
@@ -1388,18 +1877,29 @@ def render_function(self, clinic, f):
         parameters = f.render_parameters
         converters = [p.converter for p in parameters]
 
-        templates = self.output_templates(f)
+        templates = self.output_templates(f, clinic)
 
         f_self = parameters[0]
         selfless = parameters[1:]
         assert isinstance(f_self.converter, self_converter), "No self parameter in " + repr(f.full_name) + "!"
 
+        if f.critical_section:
+            match len(f.target_critical_section):
+                case 0:
+                    lock = 'Py_BEGIN_CRITICAL_SECTION({self_name});'
+                    unlock = 'Py_END_CRITICAL_SECTION();'
+                case 1:
+                    lock = 'Py_BEGIN_CRITICAL_SECTION({target_critical_section});'
+                    unlock = 'Py_END_CRITICAL_SECTION();'
+                case _:
+                    lock = 'Py_BEGIN_CRITICAL_SECTION2({target_critical_section});'
+                    unlock = 'Py_END_CRITICAL_SECTION2();'
+            data.lock.append(lock)
+            data.unlock.append(unlock)
+
         last_group = 0
         first_optional = len(selfless)
         positional = selfless and selfless[-1].is_positional_only()
-        new_or_init = f.kind in (METHOD_NEW, METHOD_INIT)
-        default_return_converter = (not f.return_converter or
-            f.return_converter.type == 'PyObject *')
         has_option_groups = False
 
         # offset i by -1 because first_optional needs to ignore self
@@ -1410,7 +1910,7 @@ def render_function(self, clinic, f):
                 first_optional = min(first_optional, i)
 
             if p.is_vararg():
-                data.cleanup.append("Py_XDECREF({});".format(c.parser_name))
+                data.cleanup.append(f"Py_XDECREF({c.parser_name});")
 
             # insert group variable
             group = p.group
@@ -1426,7 +1926,8 @@ def render_function(self, clinic, f):
             c.render(p, data)
 
         if has_option_groups and (not positional):
-            fail("You cannot use optional groups ('[' and ']')\nunless all parameters are positional-only ('/').")
+            fail("You cannot use optional groups ('[' and ']') "
+                 "unless all parameters are positional-only ('/').")
 
         # HACK
         # when we're METH_O, but have a custom return converter,
@@ -1440,34 +1941,20 @@ def render_function(self, clinic, f):
             '{impl_parameters}' in templates['parser_prototype']):
             data.declarations.pop(0)
 
-        template_dict = {}
-
         full_name = f.full_name
-        template_dict['full_name'] = full_name
-
-        if new_or_init:
-            name = f.cls.name
-        else:
-            name = f.name
-
-        template_dict['name'] = name
-
-        if f.c_basename:
-            c_basename = f.c_basename
+        template_dict = {'full_name': full_name}
+        template_dict['name'] = f.displayname
+        if f.kind is GETTER:
+            template_dict['getter_name'] = f.c_basename.upper() + "_GETTERDEF"
+            template_dict['c_basename'] = f.c_basename + "_get"
         else:
-            fields = full_name.split(".")
-            if fields[-1] == '__new__':
-                fields.pop()
-            c_basename = "_".join(fields)
-
-        template_dict['c_basename'] = c_basename
-
-        methoddef_name = "{}_METHODDEF".format(c_basename.upper())
-        template_dict['methoddef_name'] = methoddef_name
+            template_dict['methoddef_name'] = f.c_basename.upper() + "_METHODDEF"
+            template_dict['c_basename'] = f.c_basename
 
         template_dict['docstring'] = self.docstring_for_c_string(f)
 
         template_dict['self_name'] = template_dict['self_type'] = template_dict['self_type_check'] = ''
+        template_dict['target_critical_section'] = ', '.join(f.target_critical_section)
         for converter in converters:
             converter.set_template_dict(template_dict)
 
@@ -1494,16 +1981,18 @@ def render_function(self, clinic, f):
         template_dict['post_parsing'] = format_escape("".join(data.post_parsing).rstrip())
         template_dict['cleanup'] = format_escape("".join(data.cleanup))
         template_dict['return_value'] = data.return_value
+        template_dict['lock'] = "\n".join(data.lock)
+        template_dict['unlock'] = "\n".join(data.unlock)
 
         # used by unpack tuple code generator
-        ignore_self = -1 if isinstance(converters[0], self_converter) else 0
         unpack_min = first_optional
         unpack_max = len(selfless)
         template_dict['unpack_min'] = str(unpack_min)
         template_dict['unpack_max'] = str(unpack_max)
 
         if has_option_groups:
-            self.render_option_group_parsing(f, template_dict)
+            self.render_option_group_parsing(f, template_dict,
+                                             limited_capi=clinic.limited_capi)
 
         # buffers, not destination
         for name, destination in clinic.destination_buffers.items():
@@ -1518,6 +2007,8 @@ def render_function(self, clinic, f):
                 modifications=template_dict['modifications'],
                 post_parsing=template_dict['post_parsing'],
                 cleanup=template_dict['cleanup'],
+                lock=template_dict['lock'],
+                unlock=template_dict['unlock'],
                 )
 
             # Only generate the "exit:" label
@@ -1544,20 +2035,12 @@ def render_function(self, clinic, f):
         return clinic.get_destination('block').dump()
 
 
-
-
-@contextlib.contextmanager
-def OverrideStdioWith(stdout):
-    saved_stdout = sys.stdout
-    sys.stdout = stdout
-    try:
-        yield
-    finally:
-        assert sys.stdout is stdout
-        sys.stdout = saved_stdout
-
-
-def create_regex(before, after, word=True, whole_line=True):
+def create_regex(
+        before: str,
+        after: str,
+        word: bool = True,
+        whole_line: bool = True
+) -> re.Pattern[str]:
     """Create an re object for matching marker lines."""
     group_re = r"\w+" if word else ".+"
     pattern = r'{}({}){}'
@@ -1567,6 +2050,7 @@ def create_regex(before, after, word=True, whole_line=True):
     return re.compile(pattern)
 
 
+@dc.dataclass(slots=True, repr=False)
 class Block:
     r"""
     Represents a single block of text embedded in
@@ -1585,27 +2069,30 @@ class Block:
     found on the start line of the block between the square
     brackets.
 
-    signatures is either list or None.  If it's a list,
-    it may only contain clinic.Module, clinic.Class, and
+    signatures is a list.
+    It may only contain clinic.Module, clinic.Class, and
     clinic.Function objects.  At the moment it should
     contain at most one of each.
 
     output is either str or None.  If str, it's the output
     from this block, with embedded '\n' characters.
 
-    indent is either str or None.  It's the leading whitespace
+    indent is a str.  It's the leading whitespace
     that was found on every line of input.  (If body_prefix is
     not empty, this is the indent *after* removing the
     body_prefix.)
 
-    preindent is either str or None.  It's the whitespace that
+    "indent" is different from the concept of "preindent"
+    (which is not stored as state on Block objects).
+    "preindent" is the whitespace that
     was found in front of every line of input *before* the
     "body_prefix" (see the Language object).  If body_prefix
     is empty, preindent must always be empty too.
 
-    To illustrate indent and preindent: Assume that '_'
-    represents whitespace.  If the block processed was in a
-    Python file, and looked like this:
+    To illustrate the difference between "indent" and "preindent":
+
+    Assume that '_' represents whitespace.
+    If the block processed was in a Python file, and looked like this:
       ____#/*[python]
       ____#__for a in range(20):
       ____#____print(a)
@@ -1613,24 +2100,25 @@ class Block:
     "preindent" would be "____" and "indent" would be "__".
 
     """
-    def __init__(self, input, dsl_name=None, signatures=None, output=None, indent='', preindent=''):
-        assert isinstance(input, str)
-        self.input = input
-        self.dsl_name = dsl_name
-        self.signatures = signatures or []
-        self.output = output
-        self.indent = indent
-        self.preindent = preindent
-
-    def __repr__(self):
+    input: str
+    dsl_name: str | None = None
+    signatures: list[Module | Class | Function] = dc.field(default_factory=list)
+    output: Any = None  # TODO: Very dynamic; probably untypeable in its current form?
+    indent: str = ''
+
+    def __repr__(self) -> str:
         dsl_name = self.dsl_name or "text"
-        def summarize(s):
+        def summarize(s: object) -> str:
             s = repr(s)
             if len(s) > 30:
                 return s[:26] + "..." + s[0]
             return s
-        return "".join((
-            "<Block ", dsl_name, " input=", summarize(self.input), " output=", summarize(self.output), ">"))
+        parts = (
+            repr(dsl_name),
+            f"input={summarize(self.input)}",
+            f"output={summarize(self.output)}"
+        )
+        return f"<clinic.Block {' '.join(parts)}>"
 
 
 class BlockParser:
@@ -1639,7 +2127,13 @@ class BlockParser:
     Iterator, yields Block objects.
     """
 
-    def __init__(self, input, language, *, verify=True):
+    def __init__(
+            self,
+            input: str,
+            language: Language,
+            *,
+            verify: bool = True
+    ) -> None:
         """
         "input" should be a str object
         with embedded \n characters.
@@ -1657,15 +2151,15 @@ def __init__(self, input, language, *, verify=True):
         self.find_start_re = create_regex(before, after, whole_line=False)
         self.start_re = create_regex(before, after)
         self.verify = verify
-        self.last_checksum_re = None
-        self.last_dsl_name = None
-        self.dsl_name = None
+        self.last_checksum_re: re.Pattern[str] | None = None
+        self.last_dsl_name: str | None = None
+        self.dsl_name: str | None = None
         self.first_block = True
 
-    def __iter__(self):
+    def __iter__(self) -> BlockParser:
         return self
 
-    def __next__(self):
+    def __next__(self) -> Block:
         while True:
             if not self.input:
                 raise StopIteration
@@ -1682,18 +2176,18 @@ def __next__(self):
             return block
 
 
-    def is_start_line(self, line):
+    def is_start_line(self, line: str) -> str | None:
         match = self.start_re.match(line.lstrip())
         return match.group(1) if match else None
 
-    def _line(self, lookahead=False):
+    def _line(self, lookahead: bool = False) -> str:
         self.line_number += 1
         line = self.input.pop()
         if not lookahead:
             self.language.parse_line(line)
         return line
 
-    def parse_verbatim_block(self):
+    def parse_verbatim_block(self) -> Block:
         add, output = text_accumulator()
         self.block_start_line_number = self.line_number
 
@@ -1707,17 +2201,17 @@ def parse_verbatim_block(self):
 
         return Block(output())
 
-    def parse_clinic_block(self, dsl_name):
+    def parse_clinic_block(self, dsl_name: str) -> Block:
         input_add, input_output = text_accumulator()
         self.block_start_line_number = self.line_number + 1
         stop_line = self.language.stop_line.format(dsl_name=dsl_name)
         body_prefix = self.language.body_prefix.format(dsl_name=dsl_name)
 
-        def is_stop_line(line):
+        def is_stop_line(line: str) -> bool:
             # make sure to recognize stop line even if it
             # doesn't end with EOL (it could be the very end of the file)
             if line.startswith(stop_line):
-                remainder = line[len(stop_line):]
+                remainder = line.removeprefix(stop_line)
                 if remainder and not remainder.isspace():
                     fail(f"Garbage after stop line: {remainder!r}")
                 return True
@@ -1735,7 +2229,7 @@ def is_stop_line(line):
             if body_prefix:
                 line = line.lstrip()
                 assert line.startswith(body_prefix)
-                line = line[len(body_prefix):]
+                line = line.removeprefix(body_prefix)
             input_add(line)
 
         # consume output and checksum line, if present.
@@ -1747,6 +2241,7 @@ def is_stop_line(line):
             checksum_re = create_regex(before, after, word=False)
             self.last_dsl_name = dsl_name
             self.last_checksum_re = checksum_re
+        assert checksum_re is not None
 
         # scan forward for checksum line
         output_add, output_output = text_accumulator()
@@ -1761,30 +2256,28 @@ def is_stop_line(line):
             if self.is_start_line(line):
                 break
 
+        output: str | None
         output = output_output()
         if arguments:
             d = {}
             for field in shlex.split(arguments):
                 name, equals, value = field.partition('=')
                 if not equals:
-                    fail("Mangled Argument Clinic marker line: {!r}".format(line))
+                    fail(f"Mangled Argument Clinic marker line: {line!r}")
                 d[name.strip()] = value.strip()
 
             if self.verify:
                 if 'input' in d:
                     checksum = d['output']
-                    input_checksum = d['input']
                 else:
                     checksum = d['checksum']
-                    input_checksum = None
 
                 computed = compute_checksum(output, len(checksum))
                 if checksum != computed:
-                    fail("Checksum mismatch!\nExpected: {}\nComputed: {}\n"
+                    fail("Checksum mismatch! "
+                         f"Expected {checksum!r}, computed {computed!r}. "
                          "Suggested fix: remove all generated code including "
-                         "the end marker,\n"
-                         "or use the '-f' option."
-                        .format(checksum, computed))
+                         "the end marker, or use the '-f' option.")
         else:
             # put back output
             output_lines = output.splitlines(keepends=True)
@@ -1795,13 +2288,39 @@ def is_stop_line(line):
         return Block(input_output(), dsl_name, output=output)
 
 
-class BlockPrinter:
+@dc.dataclass(slots=True, frozen=True)
+class Include:
+    """
+    An include like: #include "pycore_long.h"   // _Py_ID()
+    """
+    # Example: "pycore_long.h".
+    filename: str
 
-    def __init__(self, language, f=None):
-        self.language = language
-        self.f = f or io.StringIO()
+    # Example: "_Py_ID()".
+    reason: str
+
+    # None means unconditional include.
+    # Example: "#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)".
+    condition: str | None
+
+    def sort_key(self) -> tuple[str, str]:
+        # order: '#if' comes before 'NO_CONDITION'
+        return (self.condition or 'NO_CONDITION', self.filename)
 
-    def print_block(self, block, *, core_includes=False):
+
+@dc.dataclass(slots=True)
+class BlockPrinter:
+    language: Language
+    f: io.StringIO = dc.field(default_factory=io.StringIO)
+
+    def print_block(
+            self,
+            block: Block,
+            *,
+            core_includes: bool = False,
+            limited_capi: bool,
+            header_includes: dict[str, Include],
+    ) -> None:
         input = block.input
         output = block.output
         dsl_name = block.dsl_name
@@ -1829,14 +2348,31 @@ def print_block(self, block, *, core_includes=False):
         write("\n")
 
         output = ''
-        if core_includes:
-            output += textwrap.dedent("""
-                #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-                #  include "pycore_gc.h"            // PyGC_Head
-                #  include "pycore_runtime.h"       // _Py_ID()
-                #endif
+        if core_includes and header_includes:
+            # Emit optional "#include" directives for C headers
+            output += '\n'
+
+            current_condition: str | None = None
+            includes = sorted(header_includes.values(), key=Include.sort_key)
+            for include in includes:
+                if include.condition != current_condition:
+                    if current_condition:
+                        output += '#endif\n'
+                    current_condition = include.condition
+                    if include.condition:
+                        output += f'{include.condition}\n'
+
+                if current_condition:
+                    line = f'#  include "{include.filename}"'
+                else:
+                    line = f'#include "{include.filename}"'
+                if include.reason:
+                    comment = f'// {include.reason}\n'
+                    line = line.ljust(INCLUDE_COMMENT_COLUMN - 1) + comment
+                output += line
 
-            """)
+            if current_condition:
+                output += '#endif\n'
 
         input = ''.join(block.input)
         output += ''.join(block.output)
@@ -1845,11 +2381,14 @@ def print_block(self, block, *, core_includes=False):
                 output += '\n'
             write(output)
 
-        arguments="output={} input={}".format(compute_checksum(output, 16), compute_checksum(input, 16))
+        arguments = "output={output} input={input}".format(
+            output=compute_checksum(output, 16),
+            input=compute_checksum(input, 16)
+        )
         write(self.language.checksum_line.format(dsl_name=dsl_name, arguments=arguments))
         write("\n")
 
-    def write(self, text):
+    def write(self, text: str) -> None:
         self.f.write(text)
 
 
@@ -1864,12 +2403,12 @@ class BufferSeries:
     e.g. o[-1] is an element immediately preceding o[0].
     """
 
-    def __init__(self):
+    def __init__(self) -> None:
         self._start = 0
-        self._array = []
+        self._array: list[_TextAccumulator] = []
         self._constructor = _text_accumulator
 
-    def __getitem__(self, i):
+    def __getitem__(self, i: int) -> _TextAccumulator:
         i -= self._start
         if i < 0:
             self._start += i
@@ -1880,31 +2419,41 @@ def __getitem__(self, i):
             self._array.append(self._constructor())
         return self._array[i]
 
-    def clear(self):
+    def clear(self) -> None:
         for ta in self._array:
-            ta._text.clear()
+            ta.text.clear()
 
-    def dump(self):
+    def dump(self) -> str:
         texts = [ta.output() for ta in self._array]
         return "".join(texts)
 
 
+@dc.dataclass(slots=True, repr=False)
 class Destination:
-    def __init__(self, name, type, clinic, *args):
-        self.name = name
-        self.type = type
-        self.clinic = clinic
+    name: str
+    type: str
+    clinic: Clinic
+    buffers: BufferSeries = dc.field(init=False, default_factory=BufferSeries)
+    filename: str = dc.field(init=False)  # set in __post_init__
+
+    args: dc.InitVar[tuple[str, ...]] = ()
+
+    def __post_init__(self, args: tuple[str, ...]) -> None:
         valid_types = ('buffer', 'file', 'suppress')
-        if type not in valid_types:
-            fail("Invalid destination type " + repr(type) + " for " + name + " , must be " + ', '.join(valid_types))
-        extra_arguments = 1 if type == "file" else 0
+        if self.type not in valid_types:
+            fail(
+                f"Invalid destination type {self.type!r} for {self.name}, "
+                f"must be {', '.join(valid_types)}"
+            )
+        extra_arguments = 1 if self.type == "file" else 0
         if len(args) < extra_arguments:
-            fail("Not enough arguments for destination " + name + " new " + type)
+            fail(f"Not enough arguments for destination "
+                 f"{self.name!r} new {self.type!r}")
         if len(args) > extra_arguments:
-            fail("Too many arguments for destination " + name + " new " + type)
-        if type =='file':
+            fail(f"Too many arguments for destination {self.name!r} new {self.type!r}")
+        if self.type =='file':
             d = {}
-            filename = clinic.filename
+            filename = self.clinic.filename
             d['path'] = filename
             dirname, basename = os.path.split(filename)
             if not dirname:
@@ -1914,73 +2463,42 @@ def __init__(self, name, type, clinic, *args):
             d['basename_root'], d['basename_extension'] = os.path.splitext(filename)
             self.filename = args[0].format_map(d)
 
-        self.buffers = BufferSeries()
-
-    def __repr__(self):
+    def __repr__(self) -> str:
         if self.type == 'file':
-            file_repr = " " + repr(self.filename)
+            type_repr = f"type='file' file={self.filename!r}"
         else:
-            file_repr = ''
-        return "".join(("<Destination ", self.name, " ", self.type, file_repr, ">"))
+            type_repr = f"type={self.type!r}"
+        return f"<clinic.Destination {self.name!r} {type_repr}>"
 
-    def clear(self):
+    def clear(self) -> None:
         if self.type != 'buffer':
-            fail("Can't clear destination" + self.name + " , it's not of type buffer")
+            fail(f"Can't clear destination {self.name!r}: it's not of type 'buffer'")
         self.buffers.clear()
 
-    def dump(self):
+    def dump(self) -> str:
         return self.buffers.dump()
 
 
-# maps strings to Language objects.
-# "languages" maps the name of the language ("C", "Python").
-# "extensions" maps the file extension ("c", "py").
+# "extensions" maps the file extension ("c", "py") to Language classes.
 LangDict = dict[str, Callable[[str], Language]]
-
-languages = { 'C': CLanguage, 'Python': PythonLanguage }
 extensions: LangDict = { name: CLanguage for name in "c cc cpp cxx h hh hpp hxx".split() }
 extensions['py'] = PythonLanguage
 
 
-# maps strings to callables.
-# these callables must be of the form:
-#   def foo(name, default, *, ...)
-# The callable may have any number of keyword-only parameters.
-# The callable must return a CConverter object.
-# The callable should not call builtins.print.
-converters = {}
-
-# maps strings to callables.
-# these callables follow the same rules as those for "converters" above.
-# note however that they will never be called with keyword-only parameters.
-legacy_converters = {}
-
-
-# maps strings to callables.
-# these callables must be of the form:
-#   def foo(*, ...)
-# The callable may have any number of keyword-only parameters.
-# The callable must return a CConverter object.
-# The callable should not call builtins.print.
-return_converters = {}
-
-
-def write_file(filename, new_contents, force=False):
+def write_file(filename: str, new_contents: str) -> None:
     try:
-        with open(filename, 'r', encoding="utf-8") as fp:
+        with open(filename, encoding="utf-8") as fp:
             old_contents = fp.read()
 
-        if old_contents == new_contents and not force:
+        if old_contents == new_contents:
             # no change: avoid modifying the file modification time
             return
     except FileNotFoundError:
         pass
-
     # Atomic write using a temporary file and os.replace()
     filename_new = f"{filename}.new"
     with open(filename_new, "w", encoding="utf-8") as fp:
         fp.write(new_contents)
-
     try:
         os.replace(filename_new, filename)
     except:
@@ -1988,7 +2506,17 @@ def write_file(filename, new_contents, force=False):
         raise
 
 
-clinic = None
+ClassDict = dict[str, "Class"]
+DestinationDict = dict[str, Destination]
+ModuleDict = dict[str, "Module"]
+
+
+class Parser(Protocol):
+    def __init__(self, clinic: Clinic) -> None: ...
+    def parse(self, block: Block) -> None: ...
+
+
+clinic: Clinic | None = None
 class Clinic:
 
     presets_text = """
@@ -2034,23 +2562,34 @@ class Clinic:
 
 """
 
-    def __init__(self, language, printer=None, *, verify=True, filename=None):
+    def __init__(
+            self,
+            language: CLanguage,
+            printer: BlockPrinter | None = None,
+            *,
+            filename: str,
+            limited_capi: bool,
+            verify: bool = True,
+    ) -> None:
         # maps strings to Parser objects.
         # (instantiated from the "parsers" global.)
-        self.parsers = {}
-        self.language = language
+        self.parsers: dict[str, Parser] = {}
+        self.language: CLanguage = language
         if printer:
             fail("Custom printers are broken right now")
         self.printer = printer or BlockPrinter(language)
         self.verify = verify
+        self.limited_capi = limited_capi
         self.filename = filename
-        self.modules = collections.OrderedDict()
-        self.classes = collections.OrderedDict()
-        self.functions = []
+        self.modules: ModuleDict = {}
+        self.classes: ClassDict = {}
+        self.functions: list[Function] = []
+        # dict: include name => Include instance
+        self.includes: dict[str, Include] = {}
 
         self.line_prefix = self.line_suffix = ''
 
-        self.destinations = {}
+        self.destinations: DestinationDict = {}
         self.add_destination("block", "buffer")
         self.add_destination("suppress", "suppress")
         self.add_destination("buffer", "buffer")
@@ -2058,23 +2597,26 @@ def __init__(self, language, printer=None, *, verify=True, filename=None):
             self.add_destination("file", "file", "{dirname}/clinic/{basename}.h")
 
         d = self.get_destination_buffer
-        self.destination_buffers = collections.OrderedDict((
-            ('cpp_if', d('file')),
-            ('docstring_prototype', d('suppress')),
-            ('docstring_definition', d('file')),
-            ('methoddef_define', d('file')),
-            ('impl_prototype', d('file')),
-            ('parser_prototype', d('suppress')),
-            ('parser_definition', d('file')),
-            ('cpp_endif', d('file')),
-            ('methoddef_ifndef', d('file', 1)),
-            ('impl_definition', d('block')),
-        ))
-
-        self.destination_buffers_stack = []
-        self.ifndef_symbols = set()
-
-        self.presets = {}
+        self.destination_buffers = {
+            'cpp_if': d('file'),
+            'docstring_prototype': d('suppress'),
+            'docstring_definition': d('file'),
+            'methoddef_define': d('file'),
+            'impl_prototype': d('file'),
+            'parser_prototype': d('suppress'),
+            'parser_definition': d('file'),
+            'cpp_endif': d('file'),
+            'methoddef_ifndef': d('file', 1),
+            'impl_definition': d('block'),
+        }
+
+        DestBufferType = dict[str, _TextAccumulator]
+        DestBufferList = list[DestBufferType]
+
+        self.destination_buffers_stack: DestBufferList = []
+        self.ifndef_symbols: set[str] = set()
+
+        self.presets: dict[str, dict[Any, Any]] = {}
         preset = None
         for line in self.presets_text.strip().split('\n'):
             line = line.strip()
@@ -2082,7 +2624,7 @@ def __init__(self, language, printer=None, *, verify=True, filename=None):
                 continue
             name, value, *options = line.split()
             if name == 'preset':
-                self.presets[value] = preset = collections.OrderedDict()
+                self.presets[value] = preset = {}
                 continue
 
             if len(options):
@@ -2102,39 +2644,62 @@ def __init__(self, language, printer=None, *, verify=True, filename=None):
         global clinic
         clinic = self
 
-    def add_destination(self, name, type, *args):
+    def add_include(self, name: str, reason: str,
+                    *, condition: str | None = None) -> None:
+        try:
+            existing = self.includes[name]
+        except KeyError:
+            pass
+        else:
+            if existing.condition and not condition:
+                # If the previous include has a condition and the new one is
+                # unconditional, override the include.
+                pass
+            else:
+                # Already included, do nothing. Only mention a single reason,
+                # no need to list all of them.
+                return
+
+        self.includes[name] = Include(name, reason, condition)
+
+    def add_destination(
+            self,
+            name: str,
+            type: str,
+            *args: str
+    ) -> None:
         if name in self.destinations:
-            fail("Destination already exists: " + repr(name))
-        self.destinations[name] = Destination(name, type, self, *args)
+            fail(f"Destination already exists: {name!r}")
+        self.destinations[name] = Destination(name, type, self, args)
 
-    def get_destination(self, name):
+    def get_destination(self, name: str) -> Destination:
         d = self.destinations.get(name)
         if not d:
-            fail("Destination does not exist: " + repr(name))
+            fail(f"Destination does not exist: {name!r}")
         return d
 
-    def get_destination_buffer(self, name, item=0):
+    def get_destination_buffer(
+            self,
+            name: str,
+            item: int = 0
+    ) -> _TextAccumulator:
         d = self.get_destination(name)
         return d.buffers[item]
 
-    def parse(self, input):
+    def parse(self, input: str) -> str:
         printer = self.printer
         self.block_parser = BlockParser(input, self.language, verify=self.verify)
         for block in self.block_parser:
             dsl_name = block.dsl_name
             if dsl_name:
                 if dsl_name not in self.parsers:
-                    assert dsl_name in parsers, "No parser to handle {!r} block.".format(dsl_name)
+                    assert dsl_name in parsers, f"No parser to handle {dsl_name!r} block."
                     self.parsers[dsl_name] = parsers[dsl_name](self)
                 parser = self.parsers[dsl_name]
-                try:
-                    parser.parse(block)
-                except Exception:
-                    fail('Exception raised during parsing:\n' +
-                         traceback.format_exc().rstrip())
-            printer.print_block(block)
-
-        clinic_out = []
+                parser.parse(block)
+            printer.print_block(block,
+                                limited_capi=self.limited_capi,
+                                header_includes=self.includes)
 
         # these are destinations not buffers
         for name, destination in self.destinations.items():
@@ -2143,14 +2708,15 @@ def parse(self, input):
             output = destination.dump()
 
             if output:
-
                 block = Block("", dsl_name="clinic", output=output)
 
                 if destination.type == 'buffer':
                     block.input = "dump " + name + "\n"
                     warn("Destination buffer " + repr(name) + " not empty at end of file, emptying.")
                     printer.write("\n")
-                    printer.print_block(block)
+                    printer.print_block(block,
+                                        limited_capi=self.limited_capi,
+                                        header_includes=self.includes)
                     continue
 
                 if destination.type == 'file':
@@ -2160,29 +2726,33 @@ def parse(self, input):
                             os.makedirs(dirname)
                         except FileExistsError:
                             if not os.path.isdir(dirname):
-                                fail("Can't write to destination {}, "
-                                     "can't make directory {}!".format(
-                                        destination.filename, dirname))
+                                fail(f"Can't write to destination "
+                                     f"{destination.filename!r}; "
+                                     f"can't make directory {dirname!r}!")
                         if self.verify:
-                            with open(destination.filename, "rt") as f:
+                            with open(destination.filename) as f:
                                 parser_2 = BlockParser(f.read(), language=self.language)
                                 blocks = list(parser_2)
                                 if (len(blocks) != 1) or (blocks[0].input != 'preserve\n'):
-                                    fail("Modified destination file " + repr(destination.filename) + ", not overwriting!")
+                                    fail(f"Modified destination file "
+                                         f"{destination.filename!r}; not overwriting!")
                     except FileNotFoundError:
                         pass
 
                     block.input = 'preserve\n'
                     printer_2 = BlockPrinter(self.language)
-                    printer_2.print_block(block, core_includes=True)
-                    pair = destination.filename, printer_2.f.getvalue()
-                    clinic_out.append(pair)
+                    printer_2.print_block(block,
+                                          core_includes=True,
+                                          limited_capi=self.limited_capi,
+                                          header_includes=self.includes)
+                    write_file(destination.filename, printer_2.f.getvalue())
                     continue
 
-        return printer.f.getvalue(), clinic_out
+        return printer.f.getvalue()
 
-
-    def _module_and_class(self, fields):
+    def _module_and_class(
+        self, fields: Sequence[str]
+    ) -> tuple[Module | Clinic, Class | None]:
         """
         fields should be an iterable of field names.
         returns a tuple of (module, class).
@@ -2190,43 +2760,47 @@ def _module_and_class(self, fields):
         this function is only ever used to find the parent of where
         a new class/module should go.
         """
-        in_classes = False
-        parent = module = self
-        cls = None
-        so_far = []
-
-        for field in fields:
-            so_far.append(field)
-            if not in_classes:
-                child = parent.modules.get(field)
-                if child:
-                    parent = module = child
+        parent: Clinic | Module | Class = self
+        module: Clinic | Module = self
+        cls: Class | None = None
+
+        for idx, field in enumerate(fields):
+            if not isinstance(parent, Class):
+                if field in parent.modules:
+                    parent = module = parent.modules[field]
                     continue
-                in_classes = True
-            if not hasattr(parent, 'classes'):
-                return module, cls
-            child = parent.classes.get(field)
-            if not child:
-                fail('Parent class or module ' + '.'.join(so_far) + " does not exist.")
-            cls = parent = child
+            if field in parent.classes:
+                parent = cls = parent.classes[field]
+            else:
+                fullname = ".".join(fields[idx:])
+                fail(f"Parent class or module {fullname!r} does not exist.")
 
         return module, cls
 
+    def __repr__(self) -> str:
+        return "<clinic.Clinic object>"
 
-def parse_file(filename, *, verify=True, output=None):
+
+def parse_file(
+        filename: str,
+        *,
+        limited_capi: bool,
+        output: str | None = None,
+        verify: bool = True,
+) -> None:
     if not output:
         output = filename
 
     extension = os.path.splitext(filename)[1][1:]
     if not extension:
-        fail("Can't extract file type for file " + repr(filename))
+        fail(f"Can't extract file type for file {filename!r}")
 
     try:
         language = extensions[extension](filename)
     except KeyError:
-        fail("Can't identify file type for file " + repr(filename))
+        fail(f"Can't identify file type for file {filename!r}")
 
-    with open(filename, 'r', encoding="utf-8") as f:
+    with open(filename, encoding="utf-8") as f:
         raw = f.read()
 
     # exit quickly if there are no clinic markers in the file
@@ -2234,17 +2808,23 @@ def parse_file(filename, *, verify=True, output=None):
     if not find_start_re.search(raw):
         return
 
-    clinic = Clinic(language, verify=verify, filename=filename)
-    src_out, clinic_out = clinic.parse(raw)
+    if LIMITED_CAPI_REGEX.search(raw):
+        limited_capi = True
+
+    assert isinstance(language, CLanguage)
+    clinic = Clinic(language,
+                    verify=verify,
+                    filename=filename,
+                    limited_capi=limited_capi)
+    cooked = clinic.parse(raw)
 
-    # If clinic output changed, force updating the source file as well.
-    force = bool(clinic_out)
-    write_file(output, src_out, force=force)
-    for fn, data in clinic_out:
-        write_file(fn, data)
+    write_file(output, cooked)
 
 
-def compute_checksum(input, length=None):
+def compute_checksum(
+        input: str | None,
+        length: int | None = None
+) -> str:
     input = input or ''
     s = hashlib.sha1(input.encode('utf-8')).hexdigest()
     if length:
@@ -2252,47 +2832,49 @@ def compute_checksum(input, length=None):
     return s
 
 
-
-
 class PythonParser:
-    def __init__(self, clinic):
+    def __init__(self, clinic: Clinic) -> None:
         pass
 
-    def parse(self, block):
-        s = io.StringIO()
-        with OverrideStdioWith(s):
+    def parse(self, block: Block) -> None:
+        with contextlib.redirect_stdout(io.StringIO()) as s:
             exec(block.input)
-        block.output = s.getvalue()
+            block.output = s.getvalue()
 
 
+@dc.dataclass(repr=False)
 class Module:
-    def __init__(self, name, module=None):
-        self.name = name
-        self.module = self.parent = module
+    name: str
+    module: Module | Clinic
 
-        self.modules = collections.OrderedDict()
-        self.classes = collections.OrderedDict()
-        self.functions = []
+    def __post_init__(self) -> None:
+        self.parent = self.module
+        self.modules: ModuleDict = {}
+        self.classes: ClassDict = {}
+        self.functions: list[Function] = []
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return "<clinic.Module " + repr(self.name) + " at " + str(id(self)) + ">"
 
+
+@dc.dataclass(repr=False)
 class Class:
-    def __init__(self, name, module=None, cls=None, typedef=None, type_object=None):
-        self.name = name
-        self.module = module
-        self.cls = cls
-        self.typedef = typedef
-        self.type_object = type_object
-        self.parent = cls or module
-
-        self.classes = collections.OrderedDict()
-        self.functions = []
-
-    def __repr__(self):
+    name: str
+    module: Module | Clinic
+    cls: Class | None
+    typedef: str
+    type_object: str
+
+    def __post_init__(self) -> None:
+        self.parent = self.cls or self.module
+        self.classes: ClassDict = {}
+        self.functions: list[Function] = []
+
+    def __repr__(self) -> str:
         return "<clinic.Class " + repr(self.name) + " at " + str(id(self)) + ">"
 
-unsupported_special_methods = set("""
+
+unsupported_special_methods: set[str] = set("""
 
 __abs__
 __add__
@@ -2364,10 +2946,36 @@ def __repr__(self):
 """.strip().split())
 
 
-INVALID, CALLABLE, STATIC_METHOD, CLASS_METHOD, METHOD_INIT, METHOD_NEW = """
-INVALID, CALLABLE, STATIC_METHOD, CLASS_METHOD, METHOD_INIT, METHOD_NEW
-""".replace(",", "").strip().split()
+class FunctionKind(enum.Enum):
+    INVALID         = enum.auto()
+    CALLABLE        = enum.auto()
+    STATIC_METHOD   = enum.auto()
+    CLASS_METHOD    = enum.auto()
+    METHOD_INIT     = enum.auto()
+    METHOD_NEW      = enum.auto()
+    GETTER          = enum.auto()
+
+    @functools.cached_property
+    def new_or_init(self) -> bool:
+        return self in {FunctionKind.METHOD_INIT, FunctionKind.METHOD_NEW}
+
+    def __repr__(self) -> str:
+        return f"<clinic.FunctionKind.{self.name}>"
+
+
+INVALID: Final = FunctionKind.INVALID
+CALLABLE: Final = FunctionKind.CALLABLE
+STATIC_METHOD: Final = FunctionKind.STATIC_METHOD
+CLASS_METHOD: Final = FunctionKind.CLASS_METHOD
+METHOD_INIT: Final = FunctionKind.METHOD_INIT
+METHOD_NEW: Final = FunctionKind.METHOD_NEW
+GETTER: Final = FunctionKind.GETTER
 
+ParamDict = dict[str, "Parameter"]
+ReturnConverterType = Callable[..., "CReturnConverter"]
+
+
+@dc.dataclass(repr=False)
 class Function:
     """
     Mutable duck type for inspect.Function.
@@ -2379,39 +2987,58 @@ class Function:
         It will always be true that
             (not docstring) or ((not docstring[0].isspace()) and (docstring.rstrip() == docstring))
     """
+    parameters: ParamDict = dc.field(default_factory=dict)
+    _: dc.KW_ONLY
+    name: str
+    module: Module | Clinic
+    cls: Class | None
+    c_basename: str
+    full_name: str
+    return_converter: CReturnConverter
+    kind: FunctionKind
+    coexist: bool
+    return_annotation: object = inspect.Signature.empty
+    docstring: str = ''
+    # docstring_only means "don't generate a machine-readable
+    # signature, just a normal docstring".  it's True for
+    # functions with optional groups because we can't represent
+    # those accurately with inspect.Signature in 3.4.
+    docstring_only: bool = False
+    critical_section: bool = False
+    target_critical_section: list[str] = dc.field(default_factory=list)
+
+    def __post_init__(self) -> None:
+        self.parent = self.cls or self.module
+        self.self_converter: self_converter | None = None
+        self.__render_parameters__: list[Parameter] | None = None
+
+    @functools.cached_property
+    def displayname(self) -> str:
+        """Pretty-printable name."""
+        if self.kind.new_or_init:
+            assert isinstance(self.cls, Class)
+            return self.cls.name
+        else:
+            return self.name
+
+    @functools.cached_property
+    def fulldisplayname(self) -> str:
+        parent: Class | Module | Clinic | None
+        if self.kind.new_or_init:
+            parent = getattr(self.cls, "parent", None)
+        else:
+            parent = self.parent
+        name = self.displayname
+        while isinstance(parent, (Module, Class)):
+            name = f"{parent.name}.{name}"
+            parent = parent.parent
+        return name
 
-    def __init__(self, parameters=None, *, name,
-                 module, cls=None, c_basename=None,
-                 full_name=None,
-                 return_converter, return_annotation=inspect.Signature.empty,
-                 docstring=None, kind=CALLABLE, coexist=False,
-                 docstring_only=False):
-        self.parameters = parameters or collections.OrderedDict()
-        self.return_annotation = return_annotation
-        self.name = name
-        self.full_name = full_name
-        self.module = module
-        self.cls = cls
-        self.parent = cls or module
-        self.c_basename = c_basename
-        self.return_converter = return_converter
-        self.docstring = docstring or ''
-        self.kind = kind
-        self.coexist = coexist
-        self.self_converter = None
-        # docstring_only means "don't generate a machine-readable
-        # signature, just a normal docstring".  it's True for
-        # functions with optional groups because we can't represent
-        # those accurately with inspect.Signature in 3.4.
-        self.docstring_only = docstring_only
-
-        self.rendered_parameters = None
-
-    __render_parameters__ = None
     @property
-    def render_parameters(self):
+    def render_parameters(self) -> list[Parameter]:
         if not self.__render_parameters__:
-            self.__render_parameters__ = l = []
+            l: list[Parameter] = []
+            self.__render_parameters__ = l
             for p in self.parameters.values():
                 p = p.copy()
                 p.converter.pre_render()
@@ -2419,122 +3046,116 @@ def render_parameters(self):
         return self.__render_parameters__
 
     @property
-    def methoddef_flags(self):
-        if self.kind in (METHOD_INIT, METHOD_NEW):
+    def methoddef_flags(self) -> str | None:
+        if self.kind.new_or_init:
             return None
         flags = []
-        if self.kind == CLASS_METHOD:
-            flags.append('METH_CLASS')
-        elif self.kind == STATIC_METHOD:
-            flags.append('METH_STATIC')
-        else:
-            assert self.kind == CALLABLE, "unknown kind: " + repr(self.kind)
+        match self.kind:
+            case FunctionKind.CLASS_METHOD:
+                flags.append('METH_CLASS')
+            case FunctionKind.STATIC_METHOD:
+                flags.append('METH_STATIC')
+            case _ as kind:
+                acceptable_kinds = {FunctionKind.CALLABLE, FunctionKind.GETTER}
+                assert kind in acceptable_kinds, f"unknown kind: {kind!r}"
         if self.coexist:
             flags.append('METH_COEXIST')
         return '|'.join(flags)
 
-    def __repr__(self):
-        return '<clinic.Function ' + self.name + '>'
-
-    def copy(self, **overrides):
-        kwargs = {
-            'name': self.name, 'module': self.module, 'parameters': self.parameters,
-            'cls': self.cls, 'c_basename': self.c_basename,
-            'full_name': self.full_name,
-            'return_converter': self.return_converter, 'return_annotation': self.return_annotation,
-            'docstring': self.docstring, 'kind': self.kind, 'coexist': self.coexist,
-            'docstring_only': self.docstring_only,
-            }
-        kwargs.update(overrides)
-        f = Function(**kwargs)
-
-        parameters = collections.OrderedDict()
-        for name, value in f.parameters.items():
-            value = value.copy(function=f)
-            parameters[name] = value
-        f.parameters = parameters
-        return f
+    def __repr__(self) -> str:
+        return f'<clinic.Function {self.name!r}>'
+
+    def copy(self, **overrides: Any) -> Function:
+        f = dc.replace(self, **overrides)
+        f.parameters = {
+            name: value.copy(function=f)
+            for name, value in f.parameters.items()
+        }
+        return f
+
+
+VersionTuple = tuple[int, int]
 
 
+@dc.dataclass(repr=False, slots=True)
 class Parameter:
     """
     Mutable duck type of inspect.Parameter.
     """
-
-    def __init__(self, name, kind, *, default=inspect.Parameter.empty,
-                 function, converter, annotation=inspect.Parameter.empty,
-                 docstring=None, group=0):
-        self.name = name
-        self.kind = kind
-        self.default = default
-        self.function = function
-        self.converter = converter
-        self.annotation = annotation
-        self.docstring = docstring or ''
-        self.group = group
-
-    def __repr__(self):
-        return '<clinic.Parameter ' + self.name + '>'
-
-    def is_keyword_only(self):
+    name: str
+    kind: inspect._ParameterKind
+    _: dc.KW_ONLY
+    default: object = inspect.Parameter.empty
+    function: Function
+    converter: CConverter
+    annotation: object = inspect.Parameter.empty
+    docstring: str = ''
+    group: int = 0
+    # (`None` signifies that there is no deprecation)
+    deprecated_positional: VersionTuple | None = None
+    deprecated_keyword: VersionTuple | None = None
+    right_bracket_count: int = dc.field(init=False, default=0)
+
+    def __repr__(self) -> str:
+        return f'<clinic.Parameter {self.name!r}>'
+
+    def is_keyword_only(self) -> bool:
         return self.kind == inspect.Parameter.KEYWORD_ONLY
 
-    def is_positional_only(self):
+    def is_positional_only(self) -> bool:
         return self.kind == inspect.Parameter.POSITIONAL_ONLY
 
-    def is_vararg(self):
+    def is_vararg(self) -> bool:
         return self.kind == inspect.Parameter.VAR_POSITIONAL
 
-    def is_optional(self):
+    def is_optional(self) -> bool:
         return not self.is_vararg() and (self.default is not unspecified)
 
-    def copy(self, **overrides):
-        kwargs = {
-            'name': self.name, 'kind': self.kind, 'default':self.default,
-                 'function': self.function, 'converter': self.converter, 'annotation': self.annotation,
-                 'docstring': self.docstring, 'group': self.group,
-            }
-        kwargs.update(overrides)
-        if 'converter' not in overrides:
+    def copy(
+        self,
+        /,
+        *,
+        converter: CConverter | None = None,
+        function: Function | None = None,
+        **overrides: Any
+    ) -> Parameter:
+        function = function or self.function
+        if not converter:
             converter = copy.copy(self.converter)
-            converter.function = kwargs['function']
-            kwargs['converter'] = converter
-        return Parameter(**kwargs)
+            converter.function = function
+        return dc.replace(self, **overrides, function=function, converter=converter)
 
-    def get_displayname(self, i):
+    def get_displayname(self, i: int) -> str:
         if i == 0:
-            return '"argument"'
+            return 'argument'
         if not self.is_positional_only():
-            return '''"argument '{}'"'''.format(self.name)
+            return f'argument {self.name!r}'
         else:
-            return '"argument {}"'.format(i)
-
+            return f'argument {i}'
 
-class LandMine:
-    # try to access any
-    def __init__(self, message):
-        self.__message__ = message
+    def render_docstring(self) -> str:
+        add, out = text_accumulator()
+        add(f"  {self.name}\n")
+        for line in self.docstring.split("\n"):
+            add(f"    {line}\n")
+        return out().rstrip()
 
-    def __repr__(self):
-        return '<LandMine ' + repr(self.__message__) + ">"
 
-    def __getattribute__(self, name):
-        if name in ('__repr__', '__message__'):
-            return super().__getattribute__(name)
-        # raise RuntimeError(repr(name))
-        fail("Stepped on a land mine, trying to access attribute " + repr(name) + ":\n" + self.__message__)
+CConverterClassT = TypeVar("CConverterClassT", bound=type["CConverter"])
 
-
-def add_c_converter(f, name=None):
+def add_c_converter(
+        f: CConverterClassT,
+        name: str | None = None
+) -> CConverterClassT:
     if not name:
         name = f.__name__
         if not name.endswith('_converter'):
             return f
-        name = name[:-len('_converter')]
+        name = name.removesuffix('_converter')
     converters[name] = f
     return f
 
-def add_default_legacy_c_converter(cls):
+def add_default_legacy_c_converter(cls: CConverterClassT) -> CConverterClassT:
     # automatically add converter for default format unit
     # (but without stomping on the existing one if it's already
     # set, in case you subclass)
@@ -2543,11 +3164,15 @@ def add_default_legacy_c_converter(cls):
         legacy_converters[cls.format_unit] = cls
     return cls
 
-def add_legacy_c_converter(format_unit, **kwargs):
+def add_legacy_c_converter(
+        format_unit: str,
+        **kwargs: Any
+) -> Callable[[CConverterClassT], CConverterClassT]:
     """
     Adds a legacy converter.
     """
-    def closure(f):
+    def closure(f: CConverterClassT) -> CConverterClassT:
+        added_f: Callable[..., CConverter]
         if not kwargs:
             added_f = f
         else:
@@ -2558,9 +3183,12 @@ def closure(f):
     return closure
 
 class CConverterAutoRegister(type):
-    def __init__(cls, name, bases, classdict):
-        add_c_converter(cls)
-        add_default_legacy_c_converter(cls)
+    def __init__(
+        cls, name: str, bases: tuple[type, ...], classdict: dict[str, Any]
+    ) -> None:
+        converter_cls = cast(type["CConverter"], cls)
+        add_c_converter(converter_cls)
+        add_default_legacy_c_converter(converter_cls)
 
 class CConverter(metaclass=CConverterAutoRegister):
     """
@@ -2570,10 +3198,10 @@ class CConverter(metaclass=CConverterAutoRegister):
     """
 
     # The C name to use for this variable.
-    name: str | None = None
+    name: str
 
     # The Python name to use for this variable.
-    py_name: str | None = None
+    py_name: str
 
     # The C type to use for this variable.
     # 'type' should be a Python string specifying the type, e.g. "int".
@@ -2585,7 +3213,7 @@ class CConverter(metaclass=CConverterAutoRegister):
     # Or the magic value "unknown" if this value is a cannot be evaluated
     # at Argument-Clinic-preprocessing time (but is presumed to be valid
     # at runtime).
-    default = unspecified
+    default: object = unspecified
 
     # If not None, default must be isinstance() of this type.
     # (You can also specify a tuple of types.)
@@ -2640,15 +3268,15 @@ class CConverter(metaclass=CConverterAutoRegister):
 
     # What encoding do we want for this variable?  Only used
     # by format units starting with 'e'.
-    encoding = None
+    encoding: str | None = None
 
     # Should this object be required to be a subclass of a specific type?
     # If not None, should be a string representing a pointer to a
     # PyTypeObject (e.g. "&PyUnicode_Type").
     # Only used by the 'O!' format unit (and the "object" converter).
-    subclass_of = None
+    subclass_of: str | None = None
 
-    # Do we want an adjacent '_length' variable for this variable?
+    # See also the 'length_name' property.
     # Only used by format units ending with '#'.
     length = False
 
@@ -2663,34 +3291,42 @@ class CConverter(metaclass=CConverterAutoRegister):
     # This lets the self_converter overrule the user-settable
     # name, *just* for the text signature.
     # Only set by self_converter.
-    signature_name = None
+    signature_name: str | None = None
+
+    include: Include | None = None
+    broken_limited_capi: bool = False
 
     # keep in sync with self_converter.__init__!
     def __init__(self,
              # Positional args:
-             name,
-             py_name,
-             function,
-             default=unspecified,
+             name: str,
+             py_name: str,
+             function: Function,
+             default: object = unspecified,
              *,  # Keyword only args:
-             c_default=None,
-             py_default=None,
-             annotation=unspecified,
-             unused=False,
-             **kwargs
-    ):
+             c_default: str | None = None,
+             py_default: str | None = None,
+             annotation: str | Literal[Sentinels.unspecified] = unspecified,
+             unused: bool = False,
+             **kwargs: Any
+    ) -> None:
         self.name = ensure_legal_c_identifier(name)
         self.py_name = py_name
         self.unused = unused
 
         if default is not unspecified:
-            if self.default_type and not isinstance(default, (self.default_type, Unknown)):
+            if (self.default_type
+                and default is not unknown
+                and not isinstance(default, self.default_type)
+            ):
                 if isinstance(self.default_type, type):
                     types_str = self.default_type.__name__
                 else:
-                    types_str = ', '.join((cls.__name__ for cls in self.default_type))
-                fail("{}: default value {!r} for field {} is not of type {}".format(
-                    self.__class__.__name__, default, name, types_str))
+                    names = [cls.__name__ for cls in self.default_type]
+                    types_str = ', '.join(names)
+                cls_name = self.__class__.__name__
+                fail(f"{cls_name}: default value {default!r} for field "
+                     f"{name!r} is not of type {types_str!r}")
             self.default = default
 
         if c_default:
@@ -2698,24 +3334,41 @@ def __init__(self,
         if py_default:
             self.py_default = py_default
 
-        if annotation != unspecified:
+        if annotation is not unspecified:
             fail("The 'annotation' parameter is not currently permitted.")
 
-        # this is deliberate, to prevent you from caching information
-        # about the function in the init.
-        # (that breaks if we get cloned.)
-        # so after this change we will noisily fail.
-        self.function = LandMine("Don't access members of self.function inside converter_init!")
+        # Make sure not to set self.function until after converter_init() has been called.
+        # This prevents you from caching information
+        # about the function in converter_init().
+        # (That breaks if we get cloned.)
         self.converter_init(**kwargs)
         self.function = function
 
-    def converter_init(self):
+    # Add a custom __getattr__ method to improve the error message
+    # if somebody tries to access self.function in converter_init().
+    #
+    # mypy will assume arbitrary access is okay for a class with a __getattr__ method,
+    # and that's not what we want,
+    # so put it inside an `if not TYPE_CHECKING` block
+    if not TYPE_CHECKING:
+        def __getattr__(self, attr):
+            if attr == "function":
+                fail(
+                    f"{self.__class__.__name__!r} object has no attribute 'function'.\n"
+                    f"Note: accessing self.function inside converter_init is disallowed!"
+                )
+            return super().__getattr__(attr)
+    # this branch is just here for coverage reporting
+    else:  # pragma: no cover
         pass
 
-    def is_optional(self):
+    def converter_init(self) -> None:
+        pass
+
+    def is_optional(self) -> bool:
         return (self.default is not unspecified)
 
-    def _render_self(self, parameter, data):
+    def _render_self(self, parameter: Parameter, data: CRenderData) -> None:
         self.parameter = parameter
         name = self.parser_name
 
@@ -2723,14 +3376,18 @@ def _render_self(self, parameter, data):
         s = ("&" if self.impl_by_reference else "") + name
         data.impl_arguments.append(s)
         if self.length:
-            data.impl_arguments.append(self.length_name())
+            data.impl_arguments.append(self.length_name)
 
         # impl_parameters
         data.impl_parameters.append(self.simple_declaration(by_reference=self.impl_by_reference))
         if self.length:
-            data.impl_parameters.append("Py_ssize_t " + self.length_name())
+            data.impl_parameters.append(f"Py_ssize_t {self.length_name}")
 
-    def _render_non_self(self, parameter, data):
+    def _render_non_self(
+            self,
+            parameter: Parameter,
+            data: CRenderData
+    ) -> None:
         self.parameter = parameter
         name = self.name
 
@@ -2775,7 +3432,7 @@ def _render_non_self(self, parameter, data):
         if cleanup:
             data.cleanup.append('/* Cleanup for ' + name + ' */\n' + cleanup.rstrip() + "\n")
 
-    def render(self, parameter, data):
+    def render(self, parameter: Parameter, data: CRenderData) -> None:
         """
         parameter is a clinic.Parameter instance.
         data is a CRenderData instance.
@@ -2783,42 +3440,48 @@ def render(self, parameter, data):
         self._render_self(parameter, data)
         self._render_non_self(parameter, data)
 
-    def length_name(self):
+    @functools.cached_property
+    def length_name(self) -> str:
         """Computes the name of the associated "length" variable."""
-        if not self.length:
-            return None
+        assert self.length is not None
         return self.parser_name + "_length"
 
     # Why is this one broken out separately?
     # For "positional-only" function parsing,
     # which generates a bunch of PyArg_ParseTuple calls.
-    def parse_argument(self, list):
+    def parse_argument(self, args: list[str]) -> None:
         assert not (self.converter and self.encoding)
         if self.format_unit == 'O&':
             assert self.converter
-            list.append(self.converter)
+            args.append(self.converter)
 
         if self.encoding:
-            list.append(c_repr(self.encoding))
+            args.append(c_repr(self.encoding))
         elif self.subclass_of:
-            list.append(self.subclass_of)
+            args.append(self.subclass_of)
 
-        s = ("&" if self.parse_by_reference else "") + self.name
-        list.append(s)
+        s = ("&" if self.parse_by_reference else "") + self.parser_name
+        args.append(s)
 
         if self.length:
-            list.append("&" + self.length_name())
+            args.append(f"&{self.length_name}")
 
     #
     # All the functions after here are intended as extension points.
     #
 
-    def simple_declaration(self, by_reference=False, *, in_parser=False):
+    def simple_declaration(
+            self,
+            by_reference: bool = False,
+            *,
+            in_parser: bool = False
+    ) -> str:
         """
         Computes the basic declaration of the variable.
         Used in computing the prototype declaration and the
         variable declaration.
         """
+        assert isinstance(self.type, str)
         prototype = [self.type]
         if by_reference or not self.type.endswith('*'):
             prototype.append(" ")
@@ -2833,7 +3496,7 @@ def simple_declaration(self, by_reference=False, *, in_parser=False):
         prototype.append(name)
         return "".join(prototype)
 
-    def declaration(self, *, in_parser=False):
+    def declaration(self, *, in_parser: bool = False) -> str:
         """
         The C statement to declare this variable.
         """
@@ -2846,12 +3509,11 @@ def declaration(self, *, in_parser=False):
             declaration.append(default)
         declaration.append(";")
         if self.length:
-            declaration.append('\nPy_ssize_t ')
-            declaration.append(self.length_name())
-            declaration.append(';')
+            declaration.append('\n')
+            declaration.append(f"Py_ssize_t {self.length_name};")
         return "".join(declaration)
 
-    def initialize(self):
+    def initialize(self) -> str:
         """
         The C statements required to set up this variable before parsing.
         Returns a string containing this code indented at column 0.
@@ -2859,7 +3521,7 @@ def initialize(self):
         """
         return ""
 
-    def modify(self):
+    def modify(self) -> str:
         """
         The C statements required to modify this variable after parsing.
         Returns a string containing this code indented at column 0.
@@ -2867,7 +3529,7 @@ def modify(self):
         """
         return ""
 
-    def post_parsing(self):
+    def post_parsing(self) -> str:
         """
         The C statements required to do some operations after the end of parsing but before cleaning up.
         Return a string containing this code indented at column 0.
@@ -2875,7 +3537,7 @@ def post_parsing(self):
         """
         return ""
 
-    def cleanup(self):
+    def cleanup(self) -> str:
         """
         The C statements required to clean up after this variable.
         Returns a string containing this code indented at column 0.
@@ -2883,7 +3545,7 @@ def cleanup(self):
         """
         return ""
 
-    def pre_render(self):
+    def pre_render(self) -> None:
         """
         A second initialization function, like converter_init,
         called just before rendering.
@@ -2891,53 +3553,98 @@ def pre_render(self):
         """
         pass
 
-    def parse_arg(self, argname, displayname):
+    def bad_argument(self, displayname: str, expected: str, *, limited_capi: bool, expected_literal: bool = True) -> str:
+        assert '"' not in expected
+        if limited_capi:
+            if expected_literal:
+                return (f'PyErr_Format(PyExc_TypeError, '
+                        f'"{{{{name}}}}() {displayname} must be {expected}, not %.50s", '
+                        f'{{argname}} == Py_None ? "None" : Py_TYPE({{argname}})->tp_name);')
+            else:
+                return (f'PyErr_Format(PyExc_TypeError, '
+                        f'"{{{{name}}}}() {displayname} must be %.50s, not %.50s", '
+                        f'"{expected}", '
+                        f'{{argname}} == Py_None ? "None" : Py_TYPE({{argname}})->tp_name);')
+        else:
+            if expected_literal:
+                expected = f'"{expected}"'
+            if clinic is not None:
+                clinic.add_include('pycore_modsupport.h', '_PyArg_BadArgument()')
+            return f'_PyArg_BadArgument("{{{{name}}}}", "{displayname}", {expected}, {{argname}});'
+
+    def format_code(self, fmt: str, *,
+                    argname: str,
+                    bad_argument: str | None = None,
+                    bad_argument2: str | None = None,
+                    **kwargs: Any) -> str:
+        if '{bad_argument}' in fmt:
+            if not bad_argument:
+                raise TypeError("required 'bad_argument' argument")
+            fmt = fmt.replace('{bad_argument}', bad_argument)
+        if '{bad_argument2}' in fmt:
+            if not bad_argument2:
+                raise TypeError("required 'bad_argument2' argument")
+            fmt = fmt.replace('{bad_argument2}', bad_argument2)
+        return fmt.format(argname=argname, paramname=self.parser_name, **kwargs)
+
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'O&':
-            return """
+            return self.format_code("""
                 if (!{converter}({argname}, &{paramname})) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           converter=self.converter)
+                """,
+                argname=argname,
+                converter=self.converter)
         if self.format_unit == 'O!':
             cast = '(%s)' % self.type if self.type != 'PyObject *' else ''
             if self.subclass_of in type_checks:
                 typecheck, typename = type_checks[self.subclass_of]
-                return """
+                return self.format_code("""
                     if (!{typecheck}({argname})) {{{{
-                        _PyArg_BadArgument("{{name}}", {displayname}, "{typename}", {argname});
+                        {bad_argument}
                         goto exit;
                     }}}}
                     {paramname} = {cast}{argname};
-                    """.format(argname=argname, paramname=self.parser_name,
-                               displayname=displayname, typecheck=typecheck,
-                               typename=typename, cast=cast)
-            return """
+                    """,
+                    argname=argname,
+                    bad_argument=self.bad_argument(displayname, typename, limited_capi=limited_capi),
+                    typecheck=typecheck, typename=typename, cast=cast)
+            return self.format_code("""
                 if (!PyObject_TypeCheck({argname}, {subclass_of})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, ({subclass_of})->tp_name, {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = {cast}{argname};
-                """.format(argname=argname, paramname=self.parser_name,
-                           subclass_of=self.subclass_of, cast=cast,
-                           displayname=displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, '({subclass_of})->tp_name',
+                                               expected_literal=False, limited_capi=limited_capi),
+                subclass_of=self.subclass_of, cast=cast)
         if self.format_unit == 'O':
             cast = '(%s)' % self.type if self.type != 'PyObject *' else ''
-            return """
+            return self.format_code("""
                 {paramname} = {cast}{argname};
-                """.format(argname=argname, paramname=self.parser_name, cast=cast)
+                """,
+                argname=argname, cast=cast)
         return None
 
-    def set_template_dict(self, template_dict):
+    def set_template_dict(self, template_dict: TemplateDict) -> None:
         pass
 
     @property
-    def parser_name(self):
+    def parser_name(self) -> str:
         if self.name in CLINIC_PREFIXED_ARGS: # bpo-39741
             return CLINIC_PREFIX + self.name
         else:
             return self.name
 
+    def add_include(self, name: str, reason: str,
+                    *, condition: str | None = None) -> None:
+        if self.include is not None:
+            raise ValueError("a converter only supports a single include")
+        self.include = Include(name, reason, condition)
+
 type_checks = {
     '&PyLong_Type': ('PyLong_Check', 'int'),
     '&PyTuple_Type': ('PyTuple_Check', 'tuple'),
@@ -2951,37 +3658,67 @@ def parser_name(self):
 }
 
 
+ConverterType = Callable[..., CConverter]
+ConverterDict = dict[str, ConverterType]
+
+# maps strings to callables.
+# these callables must be of the form:
+#   def foo(name, default, *, ...)
+# The callable may have any number of keyword-only parameters.
+# The callable must return a CConverter object.
+# The callable should not call builtins.print.
+converters: ConverterDict = {}
+
+# maps strings to callables.
+# these callables follow the same rules as those for "converters" above.
+# note however that they will never be called with keyword-only parameters.
+legacy_converters: ConverterDict = {}
+
+# maps strings to callables.
+# these callables must be of the form:
+#   def foo(*, ...)
+# The callable may have any number of keyword-only parameters.
+# The callable must return a CReturnConverter object.
+# The callable should not call builtins.print.
+ReturnConverterDict = dict[str, ReturnConverterType]
+return_converters: ReturnConverterDict = {}
+
+TypeSet = set[bltns.type[Any]]
+
+
 class bool_converter(CConverter):
     type = 'int'
     default_type = bool
     format_unit = 'p'
     c_ignored_default = '0'
 
-    def converter_init(self, *, accept={object}):
+    def converter_init(self, *, accept: TypeSet = {object}) -> None:
         if accept == {int}:
             self.format_unit = 'i'
         elif accept != {object}:
-            fail("bool_converter: illegal 'accept' argument " + repr(accept))
+            fail(f"bool_converter: illegal 'accept' argument {accept!r}")
         if self.default is not unspecified:
             self.default = bool(self.default)
             self.c_default = str(int(self.default))
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'i':
-            return """
-                {paramname} = _PyLong_AsInt({argname});
+            return self.format_code("""
+                {paramname} = PyLong_AsInt({argname});
                 if ({paramname} == -1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
+                """,
+                argname=argname)
         elif self.format_unit == 'p':
-            return """
+            return self.format_code("""
                 {paramname} = PyObject_IsTrue({argname});
                 if ({paramname} < 0) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class defining_class_converter(CConverter):
     """
@@ -2992,13 +3729,13 @@ class defining_class_converter(CConverter):
     format_unit = ''
     show_in_signature = False
 
-    def converter_init(self, *, type=None):
+    def converter_init(self, *, type: str | None = None) -> None:
         self.specified_type = type
 
-    def render(self, parameter, data):
+    def render(self, parameter: Parameter, data: CRenderData) -> None:
         self._render_self(parameter, data)
 
-    def set_template_dict(self, template_dict):
+    def set_template_dict(self, template_dict: TemplateDict) -> None:
         template_dict['defining_class_name'] = self.name
 
 
@@ -3008,18 +3745,18 @@ class char_converter(CConverter):
     format_unit = 'c'
     c_ignored_default = "'\0'"
 
-    def converter_init(self):
+    def converter_init(self) -> None:
         if isinstance(self.default, self.default_type):
             if len(self.default) != 1:
-                fail("char_converter: illegal default value " + repr(self.default))
+                fail(f"char_converter: illegal default value {self.default!r}")
 
             self.c_default = repr(bytes(self.default))[1:]
             if self.c_default == '"\'"':
                 self.c_default = r"'\''"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'c':
-            return """
+            return self.format_code("""
                 if (PyBytes_Check({argname}) && PyBytes_GET_SIZE({argname}) == 1) {{{{
                     {paramname} = PyBytes_AS_STRING({argname})[0];
                 }}}}
@@ -3027,12 +3764,14 @@ def parse_arg(self, argname, displayname):
                     {paramname} = PyByteArray_AS_STRING({argname})[0];
                 }}}}
                 else {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "a byte string of length 1", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'a byte string of length 1', limited_capi=limited_capi),
+            )
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 
 @add_legacy_c_converter('B', bitwise=True)
@@ -3042,13 +3781,13 @@ class unsigned_char_converter(CConverter):
     format_unit = 'b'
     c_ignored_default = "'\0'"
 
-    def converter_init(self, *, bitwise=False):
+    def converter_init(self, *, bitwise: bool = False) -> None:
         if bitwise:
             self.format_unit = 'B'
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'b':
-            return """
+            return self.format_code("""
                 {{{{
                     long ival = PyLong_AsLong({argname});
                     if (ival == -1 && PyErr_Occurred()) {{{{
@@ -3068,9 +3807,10 @@ def parse_arg(self, argname, displayname):
                         {paramname} = (unsigned char) ival;
                     }}}}
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
+                """,
+                argname=argname)
         elif self.format_unit == 'B':
-            return """
+            return self.format_code("""
                 {{{{
                     unsigned long ival = PyLong_AsUnsignedLongMask({argname});
                     if (ival == (unsigned long)-1 && PyErr_Occurred()) {{{{
@@ -3080,8 +3820,9 @@ def parse_arg(self, argname, displayname):
                         {paramname} = (unsigned char) ival;
                     }}}}
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class byte_converter(unsigned_char_converter): pass
 
@@ -3091,9 +3832,9 @@ class short_converter(CConverter):
     format_unit = 'h'
     c_ignored_default = "0"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'h':
-            return """
+            return self.format_code("""
                 {{{{
                     long ival = PyLong_AsLong({argname});
                     if (ival == -1 && PyErr_Occurred()) {{{{
@@ -3113,29 +3854,50 @@ def parse_arg(self, argname, displayname):
                         {paramname} = (short) ival;
                     }}}}
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class unsigned_short_converter(CConverter):
     type = 'unsigned short'
     default_type = int
     c_ignored_default = "0"
 
-    def converter_init(self, *, bitwise=False):
+    def converter_init(self, *, bitwise: bool = False) -> None:
         if bitwise:
             self.format_unit = 'H'
         else:
             self.converter = '_PyLong_UnsignedShort_Converter'
+            self.add_include('pycore_long.h',
+                             '_PyLong_UnsignedShort_Converter()')
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'H':
-            return """
+            return self.format_code("""
                 {paramname} = (unsigned short)PyLong_AsUnsignedLongMask({argname});
                 if ({paramname} == (unsigned short)-1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        # NOTE: Raises OverflowError for negative integer.
+        return self.format_code("""
+            {{{{
+                unsigned long uval = PyLong_AsUnsignedLong({argname});
+                if (uval == (unsigned long)-1 && PyErr_Occurred()) {{{{
+                    goto exit;
+                }}}}
+                if (uval > USHRT_MAX) {{{{
+                    PyErr_SetString(PyExc_OverflowError,
+                                    "Python int too large for C unsigned short");
+                    goto exit;
+                }}}}
+                {paramname} = (unsigned short) uval;
+            }}}}
+            """,
+            argname=argname)
 
 @add_legacy_c_converter('C', accept={str})
 class int_converter(CConverter):
@@ -3144,60 +3906,82 @@ class int_converter(CConverter):
     format_unit = 'i'
     c_ignored_default = "0"
 
-    def converter_init(self, *, accept={int}, type=None):
+    def converter_init(
+        self, *, accept: TypeSet = {int}, type: str | None = None
+    ) -> None:
         if accept == {str}:
             self.format_unit = 'C'
         elif accept != {int}:
-            fail("int_converter: illegal 'accept' argument " + repr(accept))
+            fail(f"int_converter: illegal 'accept' argument {accept!r}")
         if type is not None:
             self.type = type
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'i':
-            return """
-                {paramname} = _PyLong_AsInt({argname});
+            return self.format_code("""
+                {paramname} = PyLong_AsInt({argname});
                 if ({paramname} == -1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
+                """,
+                argname=argname)
         elif self.format_unit == 'C':
-            return """
+            return self.format_code("""
                 if (!PyUnicode_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "a unicode character", {argname});
-                    goto exit;
-                }}}}
-                if (PyUnicode_READY({argname})) {{{{
+                    {bad_argument}
                     goto exit;
                 }}}}
                 if (PyUnicode_GET_LENGTH({argname}) != 1) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "a unicode character", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = PyUnicode_READ_CHAR({argname}, 0);
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'a unicode character', limited_capi=limited_capi),
+            )
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class unsigned_int_converter(CConverter):
     type = 'unsigned int'
     default_type = int
     c_ignored_default = "0"
 
-    def converter_init(self, *, bitwise=False):
+    def converter_init(self, *, bitwise: bool = False) -> None:
         if bitwise:
             self.format_unit = 'I'
         else:
             self.converter = '_PyLong_UnsignedInt_Converter'
+            self.add_include('pycore_long.h',
+                             '_PyLong_UnsignedInt_Converter()')
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'I':
-            return """
+            return self.format_code("""
                 {paramname} = (unsigned int)PyLong_AsUnsignedLongMask({argname});
                 if ({paramname} == (unsigned int)-1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        # NOTE: Raises OverflowError for negative integer.
+        return self.format_code("""
+            {{{{
+                unsigned long uval = PyLong_AsUnsignedLong({argname});
+                if (uval == (unsigned long)-1 && PyErr_Occurred()) {{{{
+                    goto exit;
+                }}}}
+                if (uval > UINT_MAX) {{{{
+                    PyErr_SetString(PyExc_OverflowError,
+                                    "Python int too large for C unsigned int");
+                    goto exit;
+                }}}}
+                {paramname} = (unsigned int) uval;
+            }}}}
+            """,
+            argname=argname)
 
 class long_converter(CConverter):
     type = 'long'
@@ -3205,38 +3989,52 @@ class long_converter(CConverter):
     format_unit = 'l'
     c_ignored_default = "0"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'l':
-            return """
+            return self.format_code("""
                 {paramname} = PyLong_AsLong({argname});
                 if ({paramname} == -1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class unsigned_long_converter(CConverter):
     type = 'unsigned long'
     default_type = int
     c_ignored_default = "0"
 
-    def converter_init(self, *, bitwise=False):
+    def converter_init(self, *, bitwise: bool = False) -> None:
         if bitwise:
             self.format_unit = 'k'
         else:
             self.converter = '_PyLong_UnsignedLong_Converter'
+            self.add_include('pycore_long.h',
+                             '_PyLong_UnsignedLong_Converter()')
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'k':
-            return """
+            return self.format_code("""
                 if (!PyLong_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "int", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = PyLong_AsUnsignedLongMask({argname});
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'int', limited_capi=limited_capi),
+            )
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        # NOTE: Raises OverflowError for negative integer.
+        return self.format_code("""
+            {paramname} = PyLong_AsUnsignedLong({argname});
+            if ({paramname} == (unsigned long)-1 && PyErr_Occurred()) {{{{
+                goto exit;
+            }}}}
+            """,
+            argname=argname)
 
 class long_long_converter(CConverter):
     type = 'long long'
@@ -3244,58 +4042,79 @@ class long_long_converter(CConverter):
     format_unit = 'L'
     c_ignored_default = "0"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'L':
-            return """
+            return self.format_code("""
                 {paramname} = PyLong_AsLongLong({argname});
                 if ({paramname} == -1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class unsigned_long_long_converter(CConverter):
     type = 'unsigned long long'
     default_type = int
     c_ignored_default = "0"
 
-    def converter_init(self, *, bitwise=False):
+    def converter_init(self, *, bitwise: bool = False) -> None:
         if bitwise:
             self.format_unit = 'K'
         else:
             self.converter = '_PyLong_UnsignedLongLong_Converter'
+            self.add_include('pycore_long.h',
+                             '_PyLong_UnsignedLongLong_Converter()')
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'K':
-            return """
+            return self.format_code("""
                 if (!PyLong_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "int", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = PyLong_AsUnsignedLongLongMask({argname});
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'int', limited_capi=limited_capi),
+            )
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        # NOTE: Raises OverflowError for negative integer.
+        return self.format_code("""
+            {paramname} = PyLong_AsUnsignedLongLong({argname});
+            if ({paramname} == (unsigned long long)-1 && PyErr_Occurred()) {{{{
+                goto exit;
+            }}}}
+            """,
+            argname=argname)
 
 class Py_ssize_t_converter(CConverter):
     type = 'Py_ssize_t'
     c_ignored_default = "0"
 
-    def converter_init(self, *, accept={int}):
+    def converter_init(self, *, accept: TypeSet = {int}) -> None:
         if accept == {int}:
             self.format_unit = 'n'
             self.default_type = int
+            self.add_include('pycore_abstract.h', '_PyNumber_Index()')
         elif accept == {int, NoneType}:
             self.converter = '_Py_convert_optional_to_ssize_t'
+            self.add_include('pycore_abstract.h',
+                             '_Py_convert_optional_to_ssize_t()')
         else:
-            fail("Py_ssize_t_converter: illegal 'accept' argument " + repr(accept))
+            fail(f"Py_ssize_t_converter: illegal 'accept' argument {accept!r}")
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'n':
-            return """
+            if limited_capi:
+                PyNumber_Index = 'PyNumber_Index'
+            else:
+                PyNumber_Index = '_PyNumber_Index'
+            return self.format_code("""
                 {{{{
                     Py_ssize_t ival = -1;
-                    PyObject *iobj = _PyNumber_Index({argname});
+                    PyObject *iobj = {PyNumber_Index}({argname});
                     if (iobj != NULL) {{{{
                         ival = PyLong_AsSsize_t(iobj);
                         Py_DECREF(iobj);
@@ -3305,48 +4124,127 @@ def parse_arg(self, argname, displayname):
                     }}}}
                     {paramname} = ival;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                PyNumber_Index=PyNumber_Index)
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        return self.format_code("""
+            if ({argname} != Py_None) {{{{
+                if (PyIndex_Check({argname})) {{{{
+                    {paramname} = PyNumber_AsSsize_t({argname}, PyExc_OverflowError);
+                    if ({paramname} == -1 && PyErr_Occurred()) {{{{
+                        goto exit;
+                    }}}}
+                }}}}
+                else {{{{
+                    {bad_argument}
+                    goto exit;
+                }}}}
+            }}}}
+            """,
+            argname=argname,
+            bad_argument=self.bad_argument(displayname, 'integer or None', limited_capi=limited_capi),
+        )
 
 
 class slice_index_converter(CConverter):
     type = 'Py_ssize_t'
 
-    def converter_init(self, *, accept={int, NoneType}):
+    def converter_init(self, *, accept: TypeSet = {int, NoneType}) -> None:
         if accept == {int}:
             self.converter = '_PyEval_SliceIndexNotNone'
+            self.nullable = False
         elif accept == {int, NoneType}:
             self.converter = '_PyEval_SliceIndex'
+            self.nullable = True
         else:
-            fail("slice_index_converter: illegal 'accept' argument " + repr(accept))
+            fail(f"slice_index_converter: illegal 'accept' argument {accept!r}")
+
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        if self.nullable:
+            return self.format_code("""
+                if (!Py_IsNone({argname})) {{{{
+                    if (PyIndex_Check({argname})) {{{{
+                        {paramname} = PyNumber_AsSsize_t({argname}, NULL);
+                        if ({paramname} == -1 && PyErr_Occurred()) {{{{
+                            return 0;
+                        }}}}
+                    }}}}
+                    else {{{{
+                        PyErr_SetString(PyExc_TypeError,
+                                        "slice indices must be integers or "
+                                        "None or have an __index__ method");
+                        goto exit;
+                    }}}}
+                }}}}
+                """,
+                argname=argname)
+        else:
+            return self.format_code("""
+                if (PyIndex_Check({argname})) {{{{
+                    {paramname} = PyNumber_AsSsize_t({argname}, NULL);
+                    if ({paramname} == -1 && PyErr_Occurred()) {{{{
+                        goto exit;
+                    }}}}
+                }}}}
+                else {{{{
+                    PyErr_SetString(PyExc_TypeError,
+                                    "slice indices must be integers or "
+                                    "have an __index__ method");
+                    goto exit;
+                }}}}
+                """,
+                argname=argname)
 
 class size_t_converter(CConverter):
     type = 'size_t'
     converter = '_PyLong_Size_t_Converter'
     c_ignored_default = "0"
 
-    def parse_arg(self, argname, displayname):
+    def converter_init(self, *, accept: TypeSet = {int, NoneType}) -> None:
+        self.add_include('pycore_long.h',
+                         '_PyLong_Size_t_Converter()')
+
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'n':
-            return """
+            return self.format_code("""
                 {paramname} = PyNumber_AsSsize_t({argname}, PyExc_OverflowError);
                 if ({paramname} == -1 && PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        if not limited_capi:
+            return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+        # NOTE: Raises OverflowError for negative integer.
+        return self.format_code("""
+            {paramname} = PyLong_AsSize_t({argname});
+            if ({paramname} == (size_t)-1 && PyErr_Occurred()) {{{{
+                goto exit;
+            }}}}
+            """,
+            argname=argname)
 
 
 class fildes_converter(CConverter):
     type = 'int'
     converter = '_PyLong_FileDescriptor_Converter'
 
-    def _parse_arg(self, argname, displayname):
-        return """
+    def converter_init(self, *, accept: TypeSet = {int, NoneType}) -> None:
+        self.add_include('pycore_fileutils.h',
+                         '_PyLong_FileDescriptor_Converter()')
+
+    def _parse_arg(self, argname: str, displayname: str) -> str | None:
+        return self.format_code("""
             {paramname} = PyObject_AsFileDescriptor({argname});
             if ({paramname} == -1) {{{{
                 goto exit;
             }}}}
-            """.format(argname=argname, paramname=self.name)
+            """,
+            argname=argname)
 
 
 class float_converter(CConverter):
@@ -3355,9 +4253,9 @@ class float_converter(CConverter):
     format_unit = 'f'
     c_ignored_default = "0.0"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'f':
-            return """
+            return self.format_code("""
                 if (PyFloat_CheckExact({argname})) {{{{
                     {paramname} = (float) (PyFloat_AS_DOUBLE({argname}));
                 }}}}
@@ -3368,8 +4266,9 @@ def parse_arg(self, argname, displayname):
                         goto exit;
                     }}}}
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class double_converter(CConverter):
     type = 'double'
@@ -3377,9 +4276,9 @@ class double_converter(CConverter):
     format_unit = 'd'
     c_ignored_default = "0.0"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'd':
-            return """
+            return self.format_code("""
                 if (PyFloat_CheckExact({argname})) {{{{
                     {paramname} = PyFloat_AS_DOUBLE({argname});
                 }}}}
@@ -3390,8 +4289,9 @@ def parse_arg(self, argname, displayname):
                         goto exit;
                     }}}}
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 
 class Py_complex_converter(CConverter):
@@ -3400,22 +4300,28 @@ class Py_complex_converter(CConverter):
     format_unit = 'D'
     c_ignored_default = "{0.0, 0.0}"
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'D':
-            return """
+            return self.format_code("""
                 {paramname} = PyComplex_AsCComplex({argname});
                 if (PyErr_Occurred()) {{{{
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 
 class object_converter(CConverter):
     type = 'PyObject *'
     format_unit = 'O'
 
-    def converter_init(self, *, converter=None, type=None, subclass_of=None):
+    def converter_init(
+            self, *,
+            converter: str | None = None,
+            type: str | None = None,
+            subclass_of: str | None = None
+    ) -> None:
         if converter:
             if subclass_of:
                 fail("object: Cannot pass in both 'converter' and 'subclass_of'")
@@ -3441,17 +4347,27 @@ class buffer: pass
 class rwbuffer: pass
 class robuffer: pass
 
-def str_converter_key(types, encoding, zeroes):
+StrConverterKeyType = tuple[frozenset[type], bool, bool]
+
+def str_converter_key(
+    types: TypeSet, encoding: bool | str | None, zeroes: bool
+) -> StrConverterKeyType:
     return (frozenset(types), bool(encoding), bool(zeroes))
 
-str_converter_argument_map: dict[str, str] = {}
+str_converter_argument_map: dict[StrConverterKeyType, str] = {}
 
 class str_converter(CConverter):
     type = 'const char *'
     default_type = (str, Null, NoneType)
     format_unit = 's'
 
-    def converter_init(self, *, accept={str}, encoding=None, zeroes=False):
+    def converter_init(
+            self,
+            *,
+            accept: TypeSet = {str},
+            encoding: str | None = None,
+            zeroes: bool = False
+    ) -> None:
 
         key = str_converter_key(accept, encoding, zeroes)
         format_unit = str_converter_argument_map.get(key)
@@ -3471,52 +4387,58 @@ def converter_init(self, *, accept={str}, encoding=None, zeroes=False):
         if NoneType in accept and self.c_default == "Py_None":
             self.c_default = "NULL"
 
-    def post_parsing(self):
+    def post_parsing(self) -> str:
         if self.encoding:
             name = self.name
             return f"PyMem_FREE({name});\n"
+        else:
+            return ""
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 's':
-            return """
+            return self.format_code("""
                 if (!PyUnicode_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "str", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
-                Py_ssize_t {paramname}_length;
-                {paramname} = PyUnicode_AsUTF8AndSize({argname}, &{paramname}_length);
+                Py_ssize_t {length_name};
+                {paramname} = PyUnicode_AsUTF8AndSize({argname}, &{length_name});
                 if ({paramname} == NULL) {{{{
                     goto exit;
                 }}}}
-                if (strlen({paramname}) != (size_t){paramname}_length) {{{{
+                if (strlen({paramname}) != (size_t){length_name}) {{{{
                     PyErr_SetString(PyExc_ValueError, "embedded null character");
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'str', limited_capi=limited_capi),
+                length_name=self.length_name)
         if self.format_unit == 'z':
-            return """
+            return self.format_code("""
                 if ({argname} == Py_None) {{{{
                     {paramname} = NULL;
                 }}}}
                 else if (PyUnicode_Check({argname})) {{{{
-                    Py_ssize_t {paramname}_length;
-                    {paramname} = PyUnicode_AsUTF8AndSize({argname}, &{paramname}_length);
+                    Py_ssize_t {length_name};
+                    {paramname} = PyUnicode_AsUTF8AndSize({argname}, &{length_name});
                     if ({paramname} == NULL) {{{{
                         goto exit;
                     }}}}
-                    if (strlen({paramname}) != (size_t){paramname}_length) {{{{
+                    if (strlen({paramname}) != (size_t){length_name}) {{{{
                         PyErr_SetString(PyExc_ValueError, "embedded null character");
                         goto exit;
                     }}}}
                 }}}}
                 else {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "str or None", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'str or None', limited_capi=limited_capi),
+                length_name=self.length_name)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 #
 # This is the fourth or fifth rewrite of registering all the
@@ -3529,7 +4451,14 @@ def parse_arg(self, argname, displayname):
 # mapping from arguments to format unit *and* registers the
 # legacy C converter for that format unit.
 #
-def r(format_unit, *, accept, encoding=False, zeroes=False):
+ConverterKeywordDict = dict[str, TypeSet | bool]
+
+def r(format_unit: str,
+      *,
+      accept: TypeSet,
+      encoding: bool = False,
+      zeroes: bool = False
+) -> None:
     if not encoding and format_unit != 's':
         # add the legacy c converters here too.
         #
@@ -3539,7 +4468,7 @@ def r(format_unit, *, accept, encoding=False, zeroes=False):
         #
         # also don't add the converter for 's' because
         # the metaclass for CConverter adds it for us.
-        kwargs = {}
+        kwargs: ConverterKeywordDict = {}
         if accept != {str}:
             kwargs['accept'] = accept
         if zeroes:
@@ -3571,64 +4500,71 @@ class PyBytesObject_converter(CConverter):
     format_unit = 'S'
     # accept = {bytes}
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'S':
-            return """
+            return self.format_code("""
                 if (!PyBytes_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "bytes", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = ({type}){argname};
-                """.format(argname=argname, paramname=self.parser_name,
-                           type=self.type, displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'bytes', limited_capi=limited_capi),
+                type=self.type)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class PyByteArrayObject_converter(CConverter):
     type = 'PyByteArrayObject *'
     format_unit = 'Y'
     # accept = {bytearray}
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'Y':
-            return """
+            return self.format_code("""
                 if (!PyByteArray_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "bytearray", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = ({type}){argname};
-                """.format(argname=argname, paramname=self.parser_name,
-                           type=self.type, displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'bytearray', limited_capi=limited_capi),
+                type=self.type)
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 class unicode_converter(CConverter):
     type = 'PyObject *'
     default_type = (str, Null, NoneType)
     format_unit = 'U'
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if self.format_unit == 'U':
-            return """
+            return self.format_code("""
                 if (!PyUnicode_Check({argname})) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "str", {argname});
-                    goto exit;
-                }}}}
-                if (PyUnicode_READY({argname}) == -1) {{{{
+                    {bad_argument}
                     goto exit;
                 }}}}
                 {paramname} = {argname};
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'str', limited_capi=limited_capi),
+            )
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 @add_legacy_c_converter('u')
 @add_legacy_c_converter('u#', zeroes=True)
 @add_legacy_c_converter('Z', accept={str, NoneType})
 @add_legacy_c_converter('Z#', accept={str, NoneType}, zeroes=True)
 class Py_UNICODE_converter(CConverter):
-    type = 'const Py_UNICODE *'
+    type = 'const wchar_t *'
     default_type = (str, Null, NoneType)
 
-    def converter_init(self, *, accept={str}, zeroes=False):
+    def converter_init(
+            self, *,
+            accept: TypeSet = {str},
+            zeroes: bool = False
+    ) -> None:
         format_unit = 'Z' if accept=={str, NoneType} else 'u'
         if zeroes:
             format_unit += '#'
@@ -3641,30 +4577,33 @@ def converter_init(self, *, accept={str}, zeroes=False):
             elif accept == {str, NoneType}:
                 self.converter = '_PyUnicode_WideCharString_Opt_Converter'
             else:
-                fail("Py_UNICODE_converter: illegal 'accept' argument " + repr(accept))
+                fail(f"Py_UNICODE_converter: illegal 'accept' argument {accept!r}")
         self.c_default = "NULL"
 
-    def cleanup(self):
-        if not self.length:
-            return """\
-PyMem_Free((void *){name});
-""".format(name=self.name)
+    def cleanup(self) -> str:
+        if self.length:
+            return ""
+        else:
+            return f"""PyMem_Free((void *){self.parser_name});\n"""
 
-    def parse_arg(self, argname, argnum):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
         if not self.length:
             if self.accept == {str}:
-                return """
+                return self.format_code("""
                     if (!PyUnicode_Check({argname})) {{{{
-                        _PyArg_BadArgument("{{name}}", {argnum}, "str", {argname});
+                        {bad_argument}
                         goto exit;
                     }}}}
                     {paramname} = PyUnicode_AsWideCharString({argname}, NULL);
                     if ({paramname} == NULL) {{{{
                         goto exit;
                     }}}}
-                    """.format(argname=argname, paramname=self.name, argnum=argnum)
+                    """,
+                    argname=argname,
+                    bad_argument=self.bad_argument(displayname, 'str', limited_capi=limited_capi),
+                )
             elif self.accept == {str, NoneType}:
-                return """
+                return self.format_code("""
                     if ({argname} == Py_None) {{{{
                         {paramname} = NULL;
                     }}}}
@@ -3675,11 +4614,14 @@ def parse_arg(self, argname, argnum):
                         }}}}
                     }}}}
                     else {{{{
-                        _PyArg_BadArgument("{{name}}", {argnum}, "str or None", {argname});
+                        {bad_argument}
                         goto exit;
                     }}}}
-                    """.format(argname=argname, paramname=self.name, argnum=argnum)
-        return super().parse_arg(argname, argnum)
+                    """,
+                    argname=argname,
+                    bad_argument=self.bad_argument(displayname, 'str or None', limited_capi=limited_capi),
+                )
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
 
 @add_legacy_c_converter('s*', accept={str, buffer})
 @add_legacy_c_converter('z*', accept={str, buffer, NoneType})
@@ -3690,7 +4632,7 @@ class Py_buffer_converter(CConverter):
     impl_by_reference = True
     c_ignored_default = "{NULL, NULL}"
 
-    def converter_init(self, *, accept={buffer}):
+    def converter_init(self, *, accept: TypeSet = {buffer}) -> None:
         if self.default not in (unspecified, None):
             fail("The only legal default value for Py_buffer is None.")
 
@@ -3709,24 +4651,23 @@ def converter_init(self, *, accept={buffer}):
 
         self.format_unit = format_unit
 
-    def cleanup(self):
+    def cleanup(self) -> str:
         name = self.name
         return "".join(["if (", name, ".obj) {\n   PyBuffer_Release(&", name, ");\n}\n"])
 
-    def parse_arg(self, argname, displayname):
+    def parse_arg(self, argname: str, displayname: str, *, limited_capi: bool) -> str | None:
+        # PyBUF_SIMPLE guarantees that the format units of the buffers are C-contiguous.
         if self.format_unit == 'y*':
-            return """
+            return self.format_code("""
                 if (PyObject_GetBuffer({argname}, &{paramname}, PyBUF_SIMPLE) != 0) {{{{
                     goto exit;
                 }}}}
-                if (!PyBuffer_IsContiguous(&{paramname}, 'C')) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "contiguous buffer", {argname});
-                    goto exit;
-                }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'contiguous buffer', limited_capi=limited_capi),
+            )
         elif self.format_unit == 's*':
-            return """
+            return self.format_code("""
                 if (PyUnicode_Check({argname})) {{{{
                     Py_ssize_t len;
                     const char *ptr = PyUnicode_AsUTF8AndSize({argname}, &len);
@@ -3739,41 +4680,41 @@ def parse_arg(self, argname, displayname):
                     if (PyObject_GetBuffer({argname}, &{paramname}, PyBUF_SIMPLE) != 0) {{{{
                         goto exit;
                     }}}}
-                    if (!PyBuffer_IsContiguous(&{paramname}, 'C')) {{{{
-                        _PyArg_BadArgument("{{name}}", {displayname}, "contiguous buffer", {argname});
-                        goto exit;
-                    }}}}
                 }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'contiguous buffer', limited_capi=limited_capi),
+            )
         elif self.format_unit == 'w*':
-            return """
+            return self.format_code("""
                 if (PyObject_GetBuffer({argname}, &{paramname}, PyBUF_WRITABLE) < 0) {{{{
-                    PyErr_Clear();
-                    _PyArg_BadArgument("{{name}}", {displayname}, "read-write bytes-like object", {argname});
+                    {bad_argument}
                     goto exit;
                 }}}}
-                if (!PyBuffer_IsContiguous(&{paramname}, 'C')) {{{{
-                    _PyArg_BadArgument("{{name}}", {displayname}, "contiguous buffer", {argname});
-                    goto exit;
-                }}}}
-                """.format(argname=argname, paramname=self.parser_name,
-                           displayname=displayname)
-        return super().parse_arg(argname, displayname)
-
-
-def correct_name_for_self(f):
-    if f.kind in (CALLABLE, METHOD_INIT):
+                """,
+                argname=argname,
+                bad_argument=self.bad_argument(displayname, 'read-write bytes-like object', limited_capi=limited_capi),
+                bad_argument2=self.bad_argument(displayname, 'contiguous buffer', limited_capi=limited_capi),
+            )
+        return super().parse_arg(argname, displayname, limited_capi=limited_capi)
+
+
+def correct_name_for_self(
+        f: Function
+) -> tuple[str, str]:
+    if f.kind in {CALLABLE, METHOD_INIT, GETTER}:
         if f.cls:
             return "PyObject *", "self"
         return "PyObject *", "module"
-    if f.kind == STATIC_METHOD:
+    if f.kind is STATIC_METHOD:
         return "void *", "null"
     if f.kind in (CLASS_METHOD, METHOD_NEW):
         return "PyTypeObject *", "type"
-    raise RuntimeError("Unhandled type of function f: " + repr(f.kind))
+    raise AssertionError(f"Unhandled type of function f: {f.kind!r}")
 
-def required_type_for_self_for_parser(f):
+def required_type_for_self_for_parser(
+        f: Function
+) -> str | None:
     type, _ = correct_name_for_self(f)
     if f.kind in (METHOD_INIT, METHOD_NEW, STATIC_METHOD, CLASS_METHOD):
         return type
@@ -3785,22 +4726,21 @@ class self_converter(CConverter):
     A special-case converter:
     this is the default converter used for "self".
     """
-    type = None
+    type: str | None = None
     format_unit = ''
 
-    def converter_init(self, *, type=None):
+    def converter_init(self, *, type: str | None = None) -> None:
         self.specified_type = type
 
-    def pre_render(self):
+    def pre_render(self) -> None:
         f = self.function
         default_type, default_name = correct_name_for_self(f)
         self.signature_name = default_name
         self.type = self.specified_type or self.type or default_type
 
         kind = self.function.kind
-        new_or_init = kind in (METHOD_NEW, METHOD_INIT)
 
-        if (kind == STATIC_METHOD) or new_or_init:
+        if kind is STATIC_METHOD or kind.new_or_init:
             self.show_in_signature = False
 
     # tp_new (METHOD_NEW) functions are of type newfunc:
@@ -3842,15 +4782,16 @@ def pre_render(self):
     #     in the impl call.
 
     @property
-    def parser_type(self):
+    def parser_type(self) -> str:
+        assert self.type is not None
         return required_type_for_self_for_parser(self.function) or self.type
 
-    def render(self, parameter, data):
+    def render(self, parameter: Parameter, data: CRenderData) -> None:
         """
         parameter is a clinic.Parameter instance.
         data is a CRenderData instance.
         """
-        if self.function.kind == STATIC_METHOD:
+        if self.function.kind is STATIC_METHOD:
             return
 
         self._render_self(parameter, data)
@@ -3861,16 +4802,17 @@ def render(self, parameter, data):
             # because we render parameters in order, and self is always first.
             assert len(data.impl_arguments) == 1
             assert data.impl_arguments[0] == self.name
+            assert self.type is not None
             data.impl_arguments[0] = '(' + self.type + ")" + data.impl_arguments[0]
 
-    def set_template_dict(self, template_dict):
+    def set_template_dict(self, template_dict: TemplateDict) -> None:
         template_dict['self_name'] = self.name
         template_dict['self_type'] = self.parser_type
         kind = self.function.kind
         cls = self.function.cls
 
-        if ((kind in (METHOD_NEW, METHOD_INIT)) and cls and cls.typedef):
-            if kind == METHOD_NEW:
+        if kind.new_or_init and cls and cls.typedef:
+            if kind is METHOD_NEW:
                 type_check = (
                     '({0} == base_tp || {0}->tp_init == base_tp->tp_init)'
                  ).format(self.name)
@@ -3879,29 +4821,37 @@ def set_template_dict(self, template_dict):
                               ' Py_TYPE({0})->tp_new == base_tp->tp_new)'
                              ).format(self.name)
 
-            line = '{} &&\n        '.format(type_check)
+            line = f'{type_check} &&\n        '
             template_dict['self_type_check'] = line
 
-            type_object = self.function.cls.type_object
+            type_object = cls.type_object
             type_ptr = f'PyTypeObject *base_tp = {type_object};'
             template_dict['base_type_ptr'] = type_ptr
 
 
-
-def add_c_return_converter(f, name=None):
+def add_c_return_converter(
+        f: ReturnConverterType,
+        name: str | None = None
+) -> ReturnConverterType:
     if not name:
         name = f.__name__
         if not name.endswith('_return_converter'):
             return f
-        name = name[:-len('_return_converter')]
+        name = name.removesuffix('_return_converter')
     return_converters[name] = f
     return f
 
 
 class CReturnConverterAutoRegister(type):
-    def __init__(cls, name, bases, classdict):
+    def __init__(
+            cls: ReturnConverterType,
+            name: str,
+            bases: tuple[type, ...],
+            classdict: dict[str, Any]
+    ) -> None:
         add_c_return_converter(cls)
 
+
 class CReturnConverter(metaclass=CReturnConverterAutoRegister):
 
     # The C type to use for this variable.
@@ -3911,9 +4861,14 @@ class CReturnConverter(metaclass=CReturnConverterAutoRegister):
 
     # The Python default value for this parameter, as a Python value.
     # Or the magic value "unspecified" if there is no default.
-    default = None
-
-    def __init__(self, *, py_default=None, **kwargs):
+    default: object = None
+
+    def __init__(
+            self,
+            *,
+            py_default: str | None = None,
+            **kwargs: Any
+    ) -> None:
         self.py_default = py_default
         try:
             self.return_converter_init(**kwargs)
@@ -3921,11 +4876,10 @@ def __init__(self, *, py_default=None, **kwargs):
             s = ', '.join(name + '=' + repr(value) for name, value in kwargs.items())
             sys.exit(self.__class__.__name__ + '(' + s + ')\n' + str(e))
 
-    def return_converter_init(self):
-        pass
+    def return_converter_init(self) -> None: ...
 
-    def declare(self, data):
-        line = []
+    def declare(self, data: CRenderData) -> None:
+        line: list[str] = []
         add = line.append
         add(self.type)
         if not self.type.endswith('*'):
@@ -3934,48 +4888,70 @@ def declare(self, data):
         data.declarations.append(''.join(line))
         data.return_value = data.converter_retval
 
-    def err_occurred_if(self, expr, data):
-        data.return_conversion.append('if (({}) && PyErr_Occurred()) {{\n    goto exit;\n}}\n'.format(expr))
-
-    def err_occurred_if_null_pointer(self, variable, data):
-        data.return_conversion.append('if ({} == NULL) {{\n    goto exit;\n}}\n'.format(variable))
+    def err_occurred_if(
+            self,
+            expr: str,
+            data: CRenderData
+    ) -> None:
+        line = f'if (({expr}) && PyErr_Occurred()) {{\n    goto exit;\n}}\n'
+        data.return_conversion.append(line)
+
+    def err_occurred_if_null_pointer(
+            self,
+            variable: str,
+            data: CRenderData
+    ) -> None:
+        line = f'if ({variable} == NULL) {{\n    goto exit;\n}}\n'
+        data.return_conversion.append(line)
+
+    def render(
+            self,
+            function: Function,
+            data: CRenderData
+    ) -> None: ...
 
-    def render(self, function, data):
-        """
-        function is a clinic.Function instance.
-        data is a CRenderData instance.
-        """
-        pass
 
 add_c_return_converter(CReturnConverter, 'object')
 
+
 class bool_return_converter(CReturnConverter):
     type = 'int'
 
-    def render(self, function, data):
+    def render(
+            self,
+            function: Function,
+            data: CRenderData
+    ) -> None:
         self.declare(data)
         self.err_occurred_if(f"{data.converter_retval} == -1", data)
         data.return_conversion.append(
             f'return_value = PyBool_FromLong((long){data.converter_retval});\n'
         )
 
+
 class long_return_converter(CReturnConverter):
     type = 'long'
     conversion_fn = 'PyLong_FromLong'
     cast = ''
     unsigned_cast = ''
 
-    def render(self, function, data):
+    def render(
+            self,
+            function: Function,
+            data: CRenderData
+    ) -> None:
         self.declare(data)
         self.err_occurred_if(f"{data.converter_retval} == {self.unsigned_cast}-1", data)
         data.return_conversion.append(
             f'return_value = {self.conversion_fn}({self.cast}{data.converter_retval});\n'
         )
 
+
 class int_return_converter(long_return_converter):
     type = 'int'
     cast = '(long)'
 
+
 class init_return_converter(long_return_converter):
     """
     Special return converter for __init__ functions.
@@ -3983,23 +4959,30 @@ class init_return_converter(long_return_converter):
     type = 'int'
     cast = '(long)'
 
-    def render(self, function, data):
-        pass
+    def render(
+            self,
+            function: Function,
+            data: CRenderData
+    ) -> None: ...
+
 
 class unsigned_long_return_converter(long_return_converter):
     type = 'unsigned long'
     conversion_fn = 'PyLong_FromUnsignedLong'
     unsigned_cast = '(unsigned long)'
 
+
 class unsigned_int_return_converter(unsigned_long_return_converter):
     type = 'unsigned int'
     cast = '(unsigned long)'
     unsigned_cast = '(unsigned int)'
 
+
 class Py_ssize_t_return_converter(long_return_converter):
     type = 'Py_ssize_t'
     conversion_fn = 'PyLong_FromSsize_t'
 
+
 class size_t_return_converter(long_return_converter):
     type = 'size_t'
     conversion_fn = 'PyLong_FromSize_t'
@@ -4010,22 +4993,33 @@ class double_return_converter(CReturnConverter):
     type = 'double'
     cast = ''
 
-    def render(self, function, data):
+    def render(
+            self,
+            function: Function,
+            data: CRenderData
+    ) -> None:
         self.declare(data)
         self.err_occurred_if(f"{data.converter_retval} == -1.0", data)
         data.return_conversion.append(
             f'return_value = PyFloat_FromDouble({self.cast}{data.converter_retval});\n'
         )
 
+
 class float_return_converter(double_return_converter):
     type = 'float'
     cast = '(double)'
 
 
-def eval_ast_expr(node, globals, *, filename='-'):
+def eval_ast_expr(
+        node: ast.expr,
+        globals: dict[str, Any],
+        *,
+        filename: str = '-'
+) -> Any:
     """
-    Takes an ast.Expr node.  Compiles and evaluates it.
-    Returns the result of the expression.
+    Takes an ast.Expr node.  Compiles it into a function object,
+    then calls the function object with 0 arguments.
+    Returns the result of that function call.
 
     globals represents the globals dict the expression
     should see.  (There's no equivalent for "locals" here.)
@@ -4034,22 +5028,22 @@ def eval_ast_expr(node, globals, *, filename='-'):
     if isinstance(node, ast.Expr):
         node = node.value
 
-    node = ast.Expression(node)
-    co = compile(node, filename, 'eval')
-    fn = types.FunctionType(co, globals)
+    expr = ast.Expression(node)
+    co = compile(expr, filename, 'eval')
+    fn = FunctionType(co, globals)
     return fn()
 
 
 class IndentStack:
-    def __init__(self):
-        self.indents = []
-        self.margin = None
+    def __init__(self) -> None:
+        self.indents: list[int] = []
+        self.margin: str | None = None
 
-    def _ensure(self):
+    def _ensure(self) -> None:
         if not self.indents:
             fail('IndentStack expected indents, but none are defined.')
 
-    def measure(self, line):
+    def measure(self, line: str) -> int:
         """
         Returns the length of the line's margin.
         """
@@ -4063,7 +5057,7 @@ def measure(self, line):
             return self.indents[-1]
         return len(line) - len(stripped)
 
-    def infer(self, line):
+    def infer(self, line: str) -> int:
         """
         Infer what is now the current margin based on this line.
         Returns:
@@ -4096,32 +5090,83 @@ def infer(self, line):
         return outdent_count
 
     @property
-    def depth(self):
+    def depth(self) -> int:
         """
         Returns how many margins are currently defined.
         """
         return len(self.indents)
 
-    def indent(self, line):
-        """
-        Indents a line by the currently defined margin.
-        """
-        return self.margin + line
-
-    def dedent(self, line):
+    def dedent(self, line: str) -> str:
         """
         Dedents a line by the currently defined margin.
-        (The inverse of 'indent'.)
         """
+        assert self.margin is not None, "Cannot call .dedent() before calling .infer()"
         margin = self.margin
         indent = self.indents[-1]
         if not line.startswith(margin):
-            fail('Cannot dedent, line does not start with the previous margin:')
+            fail('Cannot dedent; line does not start with the previous margin.')
         return line[indent:]
 
 
+StateKeeper = Callable[[str], None]
+ConverterArgs = dict[str, Any]
+
+class ParamState(enum.IntEnum):
+    """Parameter parsing state.
+
+     [ [ a, b, ] c, ] d, e, f=3, [ g, h, [ i ] ]   <- line
+    01   2          3       4    5           6     <- state transitions
+    """
+    # Before we've seen anything.
+    # Legal transitions: to LEFT_SQUARE_BEFORE or REQUIRED
+    START = 0
+
+    # Left square backets before required params.
+    LEFT_SQUARE_BEFORE = 1
+
+    # In a group, before required params.
+    GROUP_BEFORE = 2
+
+    # Required params, positional-or-keyword or positional-only (we
+    # don't know yet). Renumber left groups!
+    REQUIRED = 3
+
+    # Positional-or-keyword or positional-only params that now must have
+    # default values.
+    OPTIONAL = 4
+
+    # In a group, after required params.
+    GROUP_AFTER = 5
+
+    # Right square brackets after required params.
+    RIGHT_SQUARE_AFTER = 6
+
+
+class FunctionNames(NamedTuple):
+    full_name: str
+    c_basename: str
+
+
 class DSLParser:
-    def __init__(self, clinic):
+    function: Function | None
+    state: StateKeeper
+    keyword_only: bool
+    positional_only: bool
+    deprecated_positional: VersionTuple | None
+    deprecated_keyword: VersionTuple | None
+    group: int
+    parameter_state: ParamState
+    indent: IndentStack
+    kind: FunctionKind
+    coexist: bool
+    forced_text_signature: str | None
+    parameter_continuation: str
+    preserve_output: bool
+    critical_section: bool
+    target_critical_section: list[str]
+    from_version_re = re.compile(r'([*/]) +\[from +(.+)\]')
+
+    def __init__(self, clinic: Clinic) -> None:
         self.clinic = clinic
 
         self.directives = {}
@@ -4138,59 +5183,65 @@ def __init__(self, clinic):
 
         self.reset()
 
-    def reset(self):
+    def reset(self) -> None:
         self.function = None
         self.state = self.state_dsl_start
-        self.parameter_indent = None
         self.keyword_only = False
         self.positional_only = False
+        self.deprecated_positional = None
+        self.deprecated_keyword = None
         self.group = 0
-        self.parameter_state = self.ps_start
-        self.seen_positional_with_default = False
+        self.parameter_state: ParamState = ParamState.START
         self.indent = IndentStack()
         self.kind = CALLABLE
         self.coexist = False
+        self.forced_text_signature = None
         self.parameter_continuation = ''
         self.preserve_output = False
+        self.critical_section = False
+        self.target_critical_section = []
 
-    def directive_version(self, required):
+    def directive_version(self, required: str) -> None:
         global version
-        if version_comparitor(version, required) < 0:
-            fail("Insufficient Clinic version!\n  Version: " + version + "\n  Required: " + required)
+        if version_comparator(version, required) < 0:
+            fail("Insufficient Clinic version!\n"
+                 f"  Version: {version}\n"
+                 f"  Required: {required}")
 
-    def directive_module(self, name):
-        fields = name.split('.')
-        new = fields.pop()
+    def directive_module(self, name: str) -> None:
+        fields = name.split('.')[:-1]
         module, cls = self.clinic._module_and_class(fields)
         if cls:
             fail("Can't nest a module inside a class!")
 
-        if name in module.classes:
-            fail("Already defined module " + repr(name) + "!")
+        if name in module.modules:
+            fail(f"Already defined module {name!r}!")
 
         m = Module(name, module)
         module.modules[name] = m
         self.block.signatures.append(m)
 
-    def directive_class(self, name, typedef, type_object):
+    def directive_class(
+            self,
+            name: str,
+            typedef: str,
+            type_object: str
+    ) -> None:
         fields = name.split('.')
-        in_classes = False
-        parent = self
         name = fields.pop()
-        so_far = []
         module, cls = self.clinic._module_and_class(fields)
 
         parent = cls or module
         if name in parent.classes:
-            fail("Already defined class " + repr(name) + "!")
+            fail(f"Already defined class {name!r}!")
 
         c = Class(name, module, cls, typedef, type_object)
         parent.classes[name] = c
         self.block.signatures.append(c)
 
-    def directive_set(self, name, value):
+    def directive_set(self, name: str, value: str) -> None:
         if name not in ("line_prefix", "line_suffix"):
-            fail("unknown variable", repr(name))
+            fail(f"unknown variable {name!r}")
 
         value = value.format_map({
             'block comment start': '/*',
@@ -4199,23 +5250,32 @@ def directive_set(self, name, value):
 
         self.clinic.__dict__[name] = value
 
-    def directive_destination(self, name, command, *args):
-        if command == 'new':
-            self.clinic.add_destination(name, *args)
-            return
-
-        if command == 'clear':
-            self.clinic.get_destination(name).clear()
-        fail("unknown destination command", repr(command))
-
-
-    def directive_output(self, command_or_name, destination=''):
+    def directive_destination(
+            self,
+            name: str,
+            command: str,
+            *args: str
+    ) -> None:
+        match command:
+            case "new":
+                self.clinic.add_destination(name, *args)
+            case "clear":
+                self.clinic.get_destination(name).clear()
+            case _:
+                fail(f"unknown destination command {command!r}")
+
+
+    def directive_output(
+            self,
+            command_or_name: str,
+            destination: str = ''
+    ) -> None:
         fd = self.clinic.destination_buffers
 
         if command_or_name == "preset":
             preset = self.clinic.presets.get(destination)
             if not preset:
-                fail("Unknown preset " + repr(destination) + "!")
+                fail(f"Unknown preset {destination!r}!")
             fd.update(preset)
             return
 
@@ -4244,37 +5304,55 @@ def directive_output(self, command_or_name, destination=''):
             return
 
         if command_or_name not in fd:
-            fail("Invalid command / destination name " + repr(command_or_name) + ", must be one of:\n  preset push pop print everything " + " ".join(fd))
+            allowed = ["preset", "push", "pop", "print", "everything"]
+            allowed.extend(fd)
+            fail(f"Invalid command or destination name {command_or_name!r}. "
+                 "Must be one of:\n -",
+                 "\n - ".join([repr(word) for word in allowed]))
         fd[command_or_name] = d
 
-    def directive_dump(self, name):
+    def directive_dump(self, name: str) -> None:
         self.block.output.append(self.clinic.get_destination(name).dump())
 
-    def directive_printout(self, *args):
+    def directive_printout(self, *args: str) -> None:
         self.block.output.append(' '.join(args))
         self.block.output.append('\n')
 
-    def directive_preserve(self):
+    def directive_preserve(self) -> None:
         if self.preserve_output:
-            fail("Can't have preserve twice in one block!")
+            fail("Can't have 'preserve' twice in one block!")
         self.preserve_output = True
 
-    def at_classmethod(self):
+    def at_classmethod(self) -> None:
         if self.kind is not CALLABLE:
             fail("Can't set @classmethod, function is not a normal callable")
         self.kind = CLASS_METHOD
 
-    def at_staticmethod(self):
+    def at_critical_section(self, *args: str) -> None:
+        if len(args) > 2:
+            fail("Up to 2 critical section variables are supported")
+        self.target_critical_section.extend(args)
+        self.critical_section = True
+
+    def at_getter(self) -> None:
+        self.kind = GETTER
+
+    def at_staticmethod(self) -> None:
         if self.kind is not CALLABLE:
             fail("Can't set @staticmethod, function is not a normal callable")
         self.kind = STATIC_METHOD
 
-    def at_coexist(self):
+    def at_coexist(self) -> None:
         if self.coexist:
             fail("Called @coexist twice!")
         self.coexist = True
 
-    def parse(self, block):
+    def at_text_signature(self, text_signature: str) -> None:
+        if self.forced_text_signature:
+            fail("Called @text_signature twice!")
+        self.forced_text_signature = text_signature
+
+    def parse(self, block: Block) -> None:
         self.reset()
         self.block = block
         self.saved_output = self.block.output
@@ -4283,45 +5361,52 @@ def parse(self, block):
         lines = block.input.split('\n')
         for line_number, line in enumerate(lines, self.clinic.block_parser.block_start_line_number):
             if '\t' in line:
-                fail('Tab characters are illegal in the Clinic DSL.\n\t' + repr(line), line_number=block_start)
-            self.state(line)
-
-        self.next(self.state_terminal)
-        self.state(None)
+                fail(f'Tab characters are illegal in the Clinic DSL: {line!r}',
+                     line_number=block_start)
+            try:
+                self.state(line)
+            except ClinicError as exc:
+                exc.lineno = line_number
+                raise
 
-        block.output.extend(self.clinic.language.render(clinic, block.signatures))
+        self.do_post_block_processing_cleanup(line_number)
+        block.output.extend(self.clinic.language.render(self.clinic, block.signatures))
 
         if self.preserve_output:
             if block.output:
                 fail("'preserve' only works for blocks that don't produce any output!")
             block.output = self.saved_output
 
-    @staticmethod
-    def ignore_line(line):
+    def in_docstring(self) -> bool:
+        """Return true if we are processing a docstring."""
+        return self.state in {
+            self.state_parameter_docstring,
+            self.state_function_docstring,
+        }
+
+    def valid_line(self, line: str) -> bool:
         # ignore comment-only lines
         if line.lstrip().startswith('#'):
-            return True
+            return False
 
         # Ignore empty lines too
         # (but not in docstring sections!)
-        if not line.strip():
-            return True
+        if not self.in_docstring() and not line.strip():
+            return False
 
-        return False
-
-    @staticmethod
-    def calculate_indent(line):
-        return len(line) - len(line.strip())
+        return True
 
-    def next(self, state, line=None):
-        # real_print(self.state.__name__, "->", state.__name__, ", line=", line)
+    def next(
+            self,
+            state: StateKeeper,
+            line: str | None = None
+    ) -> None:
         self.state = state
         if line is not None:
             self.state(line)
 
-    def state_dsl_start(self, line):
-        # self.block = self.ClinicOutputBlock(self)
-        if self.ignore_line(line):
+    def state_dsl_start(self, line: str) -> None:
+        if not self.valid_line(line):
             return
 
         # is it a directive?
@@ -4337,7 +5422,46 @@ def state_dsl_start(self, line):
 
         self.next(self.state_modulename_name, line)
 
-    def state_modulename_name(self, line):
+    @staticmethod
+    def parse_function_names(line: str) -> FunctionNames:
+        left, as_, right = line.partition(' as ')
+        full_name = left.strip()
+        c_basename = right.strip()
+        if as_ and not c_basename:
+            fail("No C basename provided after 'as' keyword")
+        if not c_basename:
+            fields = full_name.split(".")
+            if fields[-1] == '__new__':
+                fields.pop()
+            c_basename = "_".join(fields)
+        if not is_legal_py_identifier(full_name):
+            fail(f"Illegal function name: {full_name!r}")
+        if not is_legal_c_identifier(c_basename):
+            fail(f"Illegal C basename: {c_basename!r}")
+        return FunctionNames(full_name=full_name, c_basename=c_basename)
+
+    def update_function_kind(self, fullname: str) -> None:
+        fields = fullname.split('.')
+        name = fields.pop()
+        _, cls = self.clinic._module_and_class(fields)
+        if name in unsupported_special_methods:
+            fail(f"{name!r} is a special method and cannot be converted to Argument Clinic!")
+
+        if name == '__new__':
+            if (self.kind is CLASS_METHOD) and cls:
+                self.kind = METHOD_NEW
+            else:
+                fail("'__new__' must be a class method!")
+        elif name == '__init__':
+            if (self.kind is CALLABLE) and cls:
+                self.kind = METHOD_INIT
+            else:
+                fail(
+                    "'__init__' must be a normal method; "
+                    f"got '{self.kind}'!"
+                )
+
+    def state_modulename_name(self, line: str) -> None:
         # looking for declaration, which establishes the leftmost column
         # line should be
         #     modulename.fnname [as c_basename] [-> return annotation]
@@ -4354,21 +5478,15 @@ def state_modulename_name(self, line):
         # this line is permitted to start with whitespace.
         # we'll call this number of spaces F (for "function").
 
-        if not line.strip():
-            return
-
+        assert self.valid_line(line)
         self.indent.infer(line)
 
         # are we cloning?
         before, equals, existing = line.rpartition('=')
         if equals:
-            full_name, _, c_basename = before.partition(' as ')
-            full_name = full_name.strip()
-            c_basename = c_basename.strip()
+            full_name, c_basename = self.parse_function_names(before)
             existing = existing.strip()
-            if (is_legal_py_identifier(full_name) and
-                (not c_basename or is_legal_c_identifier(c_basename)) and
-                is_legal_py_identifier(existing)):
+            if is_legal_py_identifier(existing):
                 # we're cloning!
                 fields = [x.strip() for x in existing.split('.')]
                 function_name = fields.pop()
@@ -4378,83 +5496,78 @@ def state_modulename_name(self, line):
                     if existing_function.name == function_name:
                         break
                 else:
-                    existing_function = None
-                if not existing_function:
-                    print("class", cls, "module", module, "existing", existing)
-                    print("cls. functions", cls.functions)
-                    fail("Couldn't find existing function " + repr(existing) + "!")
+                    print(f"{cls=}, {module=}, {existing=}", file=sys.stderr)
+                    print(f"{(cls or module).functions=}", file=sys.stderr)
+                    fail(f"Couldn't find existing function {existing!r}!")
 
                 fields = [x.strip() for x in full_name.split('.')]
                 function_name = fields.pop()
                 module, cls = self.clinic._module_and_class(fields)
 
-                if not (existing_function.kind == self.kind and existing_function.coexist == self.coexist):
-                    fail("'kind' of function and cloned function don't match!  (@classmethod/@staticmethod/@coexist)")
-                self.function = existing_function.copy(name=function_name, full_name=full_name, module=module, cls=cls, c_basename=c_basename, docstring='')
-
-                self.block.signatures.append(self.function)
-                (cls or module).functions.append(self.function)
+                self.update_function_kind(full_name)
+                overrides: dict[str, Any] = {
+                    "name": function_name,
+                    "full_name": full_name,
+                    "module": module,
+                    "cls": cls,
+                    "c_basename": c_basename,
+                    "docstring": "",
+                }
+                if not (existing_function.kind is self.kind and
+                        existing_function.coexist == self.coexist):
+                    # Allow __new__ or __init__ methods.
+                    if existing_function.kind.new_or_init:
+                        overrides["kind"] = self.kind
+                        # Future enhancement: allow custom return converters
+                        overrides["return_converter"] = CReturnConverter()
+                    else:
+                        fail("'kind' of function and cloned function don't match! "
+                             "(@classmethod/@staticmethod/@coexist)")
+                function = existing_function.copy(**overrides)
+                self.function = function
+                self.block.signatures.append(function)
+                (cls or module).functions.append(function)
                 self.next(self.state_function_docstring)
                 return
 
         line, _, returns = line.partition('->')
-
-        full_name, _, c_basename = line.partition(' as ')
-        full_name = full_name.strip()
-        c_basename = c_basename.strip() or None
-
-        if not is_legal_py_identifier(full_name):
-            fail("Illegal function name: {}".format(full_name))
-        if c_basename and not is_legal_c_identifier(c_basename):
-            fail("Illegal C basename: {}".format(c_basename))
+        returns = returns.strip()
+        full_name, c_basename = self.parse_function_names(line)
 
         return_converter = None
         if returns:
-            ast_input = "def x() -> {}: pass".format(returns)
-            module = None
+            ast_input = f"def x() -> {returns}: pass"
             try:
-                module = ast.parse(ast_input)
+                module_node = ast.parse(ast_input)
             except SyntaxError:
-                pass
-            if not module:
-                fail("Badly-formed annotation for " + full_name + ": " + returns)
+                fail(f"Badly formed annotation for {full_name!r}: {returns!r}")
+            function_node = module_node.body[0]
+            assert isinstance(function_node, ast.FunctionDef)
             try:
-                name, legacy, kwargs = self.parse_converter(module.body[0].returns)
+                name, legacy, kwargs = self.parse_converter(function_node.returns)
                 if legacy:
-                    fail("Legacy converter {!r} not allowed as a return converter"
-                         .format(name))
+                    fail(f"Legacy converter {name!r} not allowed as a return converter")
                 if name not in return_converters:
-                    fail("No available return converter called " + repr(name))
+                    fail(f"No available return converter called {name!r}")
                 return_converter = return_converters[name](**kwargs)
             except ValueError:
-                fail("Badly-formed annotation for " + full_name + ": " + returns)
+                fail(f"Badly formed annotation for {full_name!r}: {returns!r}")
 
         fields = [x.strip() for x in full_name.split('.')]
         function_name = fields.pop()
         module, cls = self.clinic._module_and_class(fields)
 
-        fields = full_name.split('.')
-        if fields[-1] in unsupported_special_methods:
-            fail(f"{fields[-1]} is a special method and cannot be converted to Argument Clinic!  (Yet.)")
-
-        if fields[-1] == '__new__':
-            if (self.kind != CLASS_METHOD) or (not cls):
-                fail("__new__ must be a class method!")
-            self.kind = METHOD_NEW
-        elif fields[-1] == '__init__':
-            if (self.kind != CALLABLE) or (not cls):
-                fail("__init__ must be a normal method, not a class or static method!")
-            self.kind = METHOD_INIT
-            if not return_converter:
-                return_converter = init_return_converter()
+        self.update_function_kind(full_name)
+        if self.kind is METHOD_INIT and not return_converter:
+            return_converter = init_return_converter()
 
         if not return_converter:
             return_converter = CReturnConverter()
 
-        if not module:
-            fail("Undefined module used in declaration of " + repr(full_name.strip()) + ".")
         self.function = Function(name=function_name, full_name=full_name, module=module, cls=cls, c_basename=c_basename,
-                                 return_converter=return_converter, kind=self.kind, coexist=self.coexist)
+                                 return_converter=return_converter, kind=self.kind, coexist=self.coexist,
+                                 critical_section=self.critical_section,
+                                 target_critical_section=self.target_critical_section)
         self.block.signatures.append(self.function)
 
         # insert a self converter automatically
@@ -4463,8 +5576,9 @@ def state_modulename_name(self, line):
         if cls and type == "PyObject *":
             kwargs['type'] = cls.typedef
         sc = self.function.self_converter = self_converter(name, name, self.function, **kwargs)
-        p_self = Parameter(sc.name, inspect.Parameter.POSITIONAL_ONLY, function=self.function, converter=sc)
-        self.function.parameters[sc.name] = p_self
+        p_self = Parameter(name, inspect.Parameter.POSITIONAL_ONLY,
+                           function=self.function, converter=sc)
+        self.function.parameters[name] = p_self
 
         (cls or module).functions.append(self.function)
         self.next(self.state_parameters_start)
@@ -4521,25 +5635,11 @@ def state_modulename_name(self, line):
     #
     # These rules are enforced with a single state variable:
     # "parameter_state".  (Previously the code was a miasma of ifs and
-    # separate boolean state variables.)  The states are:
-    #
-    #  [ [ a, b, ] c, ] d, e, f=3, [ g, h, [ i ] ]   <- line
-    # 01   2          3       4    5           6     <- state transitions
-    #
-    # 0: ps_start.  before we've seen anything.  legal transitions are to 1 or 3.
-    # 1: ps_left_square_before.  left square brackets before required parameters.
-    # 2: ps_group_before.  in a group, before required parameters.
-    # 3: ps_required.  required parameters, positional-or-keyword or positional-only
-    #     (we don't know yet).  (renumber left groups!)
-    # 4: ps_optional.  positional-or-keyword or positional-only parameters that
-    #    now must have default values.
-    # 5: ps_group_after.  in a group, after required parameters.
-    # 6: ps_right_square_after.  right square brackets after required parameters.
-    ps_start, ps_left_square_before, ps_group_before, ps_required, \
-    ps_optional, ps_group_after, ps_right_square_after = range(7)
-
-    def state_parameters_start(self, line):
-        if self.ignore_line(line):
+    # separate boolean state variables.)  The states are defined in the
+    # ParamState class.
+
+    def state_parameters_start(self, line: str) -> None:
+        if not self.valid_line(line):
             return
 
         # if this line is not indented, we have no parameters
@@ -4550,23 +5650,26 @@ def state_parameters_start(self, line):
         return self.next(self.state_parameter, line)
 
 
-    def to_required(self):
+    def to_required(self) -> None:
         """
         Transition to the "required" parameter state.
         """
-        if self.parameter_state != self.ps_required:
-            self.parameter_state = self.ps_required
+        if self.parameter_state is not ParamState.REQUIRED:
+            self.parameter_state = ParamState.REQUIRED
+            assert self.function is not None
             for p in self.function.parameters.values():
                 p.group = -p.group
 
-    def state_parameter(self, line):
+    def state_parameter(self, line: str) -> None:
+        assert isinstance(self.function, Function)
+
+        if not self.valid_line(line):
+            return
+
         if self.parameter_continuation:
             line = self.parameter_continuation + ' ' + line.lstrip()
             self.parameter_continuation = ''
 
-        if self.ignore_line(line):
-            return
-
         assert self.indent.depth == 2
         indent = self.indent.infer(line)
         if indent == -1:
@@ -4583,22 +5686,40 @@ def state_parameter(self, line):
             return
 
         line = line.lstrip()
-
-        if line in ('*', '/', '[', ']'):
-            self.parse_special_symbol(line)
-            return
-
-        if self.parameter_state in (self.ps_start, self.ps_required):
-            self.to_required()
-        elif self.parameter_state == self.ps_left_square_before:
-            self.parameter_state = self.ps_group_before
-        elif self.parameter_state == self.ps_group_before:
-            if not self.group:
+        version: VersionTuple | None = None
+        match = self.from_version_re.fullmatch(line)
+        if match:
+            line = match[1]
+            version = self.parse_version(match[2])
+
+        func = self.function
+        match line:
+            case '*':
+                self.parse_star(func, version)
+            case '[':
+                self.parse_opening_square_bracket(func)
+            case ']':
+                self.parse_closing_square_bracket(func)
+            case '/':
+                self.parse_slash(func, version)
+            case param:
+                self.parse_parameter(param)
+
+    def parse_parameter(self, line: str) -> None:
+        assert self.function is not None
+
+        match self.parameter_state:
+            case ParamState.START | ParamState.REQUIRED:
                 self.to_required()
-        elif self.parameter_state in (self.ps_group_after, self.ps_optional):
-            pass
-        else:
-            fail("Function " + self.function.name + " has an unsupported group configuration. (Unexpected state " + str(self.parameter_state) + ".a)")
+            case ParamState.LEFT_SQUARE_BEFORE:
+                self.parameter_state = ParamState.GROUP_BEFORE
+            case ParamState.GROUP_BEFORE:
+                if not self.group:
+                    self.to_required()
+            case ParamState.GROUP_AFTER | ParamState.OPTIONAL:
+                pass
+            case st:
+                fail(f"Function {self.function.name} has an unsupported group configuration. (Unexpected state {st}.a)")
 
         # handle "as" for  parameters too
         c_name = None
@@ -4616,6 +5737,7 @@ def state_parameter(self, line):
                 fields[0] = name
                 line = ' '.join(fields)
 
+        default: str | None
         base, equals, default = line.rpartition('=')
         if not equals:
             base = default
@@ -4623,7 +5745,7 @@ def state_parameter(self, line):
 
         module = None
         try:
-            ast_input = "def x({}): pass".format(base)
+            ast_input = f"def x({base}): pass"
             module = ast.parse(ast_input)
         except SyntaxError:
             try:
@@ -4631,21 +5753,27 @@ def state_parameter(self, line):
                 #   c: int(accept={str})
                 # so assume there was no actual default value.
                 default = None
-                ast_input = "def x({}): pass".format(line)
+                ast_input = f"def x({line}): pass"
                 module = ast.parse(ast_input)
             except SyntaxError:
                 pass
         if not module:
-            fail("Function " + self.function.name + " has an invalid parameter declaration:\n\t" + line)
+            fail(f"Function {self.function.name!r} has an invalid parameter declaration:\n\t",
+                 repr(line))
 
-        function_args = module.body[0].args
+        function = module.body[0]
+        assert isinstance(function, ast.FunctionDef)
+        function_args = function.args
 
         if len(function_args.args) > 1:
-            fail("Function " + self.function.name + " has an invalid parameter declaration (comma?):\n\t" + line)
+            fail(f"Function {self.function.name!r} has an "
+                 f"invalid parameter declaration (comma?): {line!r}")
         if function_args.defaults or function_args.kw_defaults:
-            fail("Function " + self.function.name + " has an invalid parameter declaration (default value?):\n\t" + line)
+            fail(f"Function {self.function.name!r} has an "
+                 f"invalid parameter declaration (default value?): {line!r}")
         if function_args.kwarg:
-            fail("Function " + self.function.name + " has an invalid parameter declaration (**kwargs?):\n\t" + line)
+            fail(f"Function {self.function.name!r} has an "
+                 f"invalid parameter declaration (**kwargs?): {line!r}")
 
         if function_args.vararg:
             is_vararg = True
@@ -4658,8 +5786,10 @@ def state_parameter(self, line):
         name, legacy, kwargs = self.parse_converter(parameter.annotation)
 
         if not default:
-            if self.parameter_state == self.ps_optional:
-                fail("Can't have a parameter without a default (" + repr(parameter_name) + ")\nafter a parameter with a default!")
+            if self.parameter_state is ParamState.OPTIONAL:
+                fail(f"Can't have a parameter without a default ({parameter_name!r}) "
+                      "after a parameter with a default!")
+            value: Sentinels | Null
             if is_vararg:
                 value = NULL
                 kwargs.setdefault('c_default', "NULL")
@@ -4671,12 +5801,11 @@ def state_parameter(self, line):
             if is_vararg:
                 fail("Vararg can't take a default value!")
 
-            if self.parameter_state == self.ps_required:
-                self.parameter_state = self.ps_optional
+            if self.parameter_state is ParamState.REQUIRED:
+                self.parameter_state = ParamState.OPTIONAL
             default = default.strip()
             bad = False
-            ast_input = "x = {}".format(default)
-            bad = False
+            ast_input = f"x = {default}"
             try:
                 module = ast.parse(ast_input)
 
@@ -4686,7 +5815,7 @@ def state_parameter(self, line):
                     # of disallowed ast nodes.
                     class DetectBadNodes(ast.NodeVisitor):
                         bad = False
-                        def bad_node(self, node):
+                        def bad_node(self, node: ast.AST) -> None:
                             self.bad = True
 
                         # inline function call
@@ -4713,18 +5842,22 @@ def bad_node(self, node):
                     # but at least make an attempt at ensuring it's a valid expression.
                     try:
                         value = eval(default)
-                        if value == unspecified:
-                            fail("'unspecified' is not a legal default value!")
                     except NameError:
                         pass # probably a named constant
                     except Exception as e:
-                        fail("Malformed expression given as default value\n"
-                             "{!r} caused {!r}".format(default, e))
+                        fail("Malformed expression given as default value "
+                             f"{default!r} caused {e!r}")
+                    else:
+                        if value is unspecified:
+                            fail("'unspecified' is not a legal default value!")
                 if bad:
-                    fail("Unsupported expression as default value: " + repr(default))
+                    fail(f"Unsupported expression as default value: {default!r}")
 
-                expr = module.body[0].value
+                assignment = module.body[0]
+                assert isinstance(assignment, ast.Assign)
+                expr = assignment.value
                 # mild hack: explicitly support NULL as a default value
+                c_default: str | None
                 if isinstance(expr, ast.Name) and expr.id == 'NULL':
                     value = NULL
                     py_default = '<unrepresentable>'
@@ -4736,23 +5869,29 @@ def bad_node(self, node):
                     )):
                     c_default = kwargs.get("c_default")
                     if not (isinstance(c_default, str) and c_default):
-                        fail("When you specify an expression (" + repr(default) + ") as your default value,\nyou MUST specify a valid c_default." + ast.dump(expr))
+                        fail(f"When you specify an expression ({default!r}) "
+                             f"as your default value, "
+                             f"you MUST specify a valid c_default.",
+                             ast.dump(expr))
                     py_default = default
                     value = unknown
                 elif isinstance(expr, ast.Attribute):
                     a = []
-                    n = expr
+                    n: ast.expr | ast.Attribute = expr
                     while isinstance(n, ast.Attribute):
                         a.append(n.attr)
                         n = n.value
                     if not isinstance(n, ast.Name):
-                        fail("Unsupported default value " + repr(default) + " (looked like a Python constant)")
+                        fail(f"Unsupported default value {default!r} "
+                             "(looked like a Python constant)")
                     a.append(n.id)
                     py_default = ".".join(reversed(a))
 
                     c_default = kwargs.get("c_default")
                     if not (isinstance(c_default, str) and c_default):
-                        fail("When you specify a named constant (" + repr(py_default) + ") as your default value,\nyou MUST specify a valid c_default.")
+                        fail(f"When you specify a named constant ({py_default!r}) "
+                             "as your default value, "
+                             "you MUST specify a valid c_default.")
 
                     try:
                         value = eval(py_default)
@@ -4761,7 +5900,7 @@ def bad_node(self, node):
                 else:
                     value = ast.literal_eval(expr)
                     py_default = repr(value)
-                    if isinstance(value, (bool, None.__class__)):
+                    if isinstance(value, (bool, NoneType)):
                         c_default = "Py_" + py_default
                     elif isinstance(value, str):
                         c_default = c_repr(value)
@@ -4769,13 +5908,15 @@ def bad_node(self, node):
                         c_default = py_default
 
             except SyntaxError as e:
-                fail("Syntax error: " + repr(e.text))
+                fail(f"Syntax error: {e.text!r}")
             except (ValueError, AttributeError):
                 value = unknown
                 c_default = kwargs.get("c_default")
                 py_default = default
                 if not (isinstance(c_default, str) and c_default):
-                    fail("When you specify a named constant (" + repr(py_default) + ") as your default value,\nyou MUST specify a valid c_default.")
+                    fail("When you specify a named constant "
+                         f"({py_default!r}) as your default value, "
+                         "you MUST specify a valid c_default.")
 
             kwargs.setdefault('c_default', c_default)
             kwargs.setdefault('py_default', py_default)
@@ -4783,11 +5924,12 @@ def bad_node(self, node):
         dict = legacy_converters if legacy else converters
         legacy_str = "legacy " if legacy else ""
         if name not in dict:
-            fail('{} is not a valid {}converter'.format(name, legacy_str))
+            fail(f'{name!r} is not a valid {legacy_str}converter')
         # if you use a c_name for the parameter, we just give that name to the converter
         # but the parameter object gets the python name
         converter = dict[name](c_name or parameter_name, parameter_name, self.function, value, **kwargs)
 
+        kind: inspect._ParameterKind
         if is_vararg:
             kind = inspect.Parameter.VAR_POSITIONAL
         elif self.keyword_only:
@@ -4797,114 +5939,226 @@ def bad_node(self, node):
 
         if isinstance(converter, self_converter):
             if len(self.function.parameters) == 1:
-                if (self.parameter_state != self.ps_required):
+                if self.parameter_state is not ParamState.REQUIRED:
                     fail("A 'self' parameter cannot be marked optional.")
                 if value is not unspecified:
                     fail("A 'self' parameter cannot have a default value.")
                 if self.group:
                     fail("A 'self' parameter cannot be in an optional group.")
                 kind = inspect.Parameter.POSITIONAL_ONLY
-                self.parameter_state = self.ps_start
+                self.parameter_state = ParamState.START
                 self.function.parameters.clear()
             else:
-                fail("A 'self' parameter, if specified, must be the very first thing in the parameter block.")
+                fail("A 'self' parameter, if specified, must be the "
+                     "very first thing in the parameter block.")
 
         if isinstance(converter, defining_class_converter):
             _lp = len(self.function.parameters)
             if _lp == 1:
-                if (self.parameter_state != self.ps_required):
+                if self.parameter_state is not ParamState.REQUIRED:
                     fail("A 'defining_class' parameter cannot be marked optional.")
                 if value is not unspecified:
                     fail("A 'defining_class' parameter cannot have a default value.")
                 if self.group:
                     fail("A 'defining_class' parameter cannot be in an optional group.")
             else:
-                fail("A 'defining_class' parameter, if specified, must either be the first thing in the parameter block, or come just after 'self'.")
+                fail("A 'defining_class' parameter, if specified, must either "
+                     "be the first thing in the parameter block, or come just "
+                     "after 'self'.")
 
 
-        p = Parameter(parameter_name, kind, function=self.function, converter=converter, default=value, group=self.group)
+        p = Parameter(parameter_name, kind, function=self.function,
+                      converter=converter, default=value, group=self.group,
+                      deprecated_positional=self.deprecated_positional)
 
         names = [k.name for k in self.function.parameters.values()]
         if parameter_name in names[1:]:
-            fail("You can't have two parameters named " + repr(parameter_name) + "!")
+            fail(f"You can't have two parameters named {parameter_name!r}!")
         elif names and parameter_name == names[0] and c_name is None:
-            fail(f"Parameter '{parameter_name}' requires a custom C name")
+            fail(f"Parameter {parameter_name!r} requires a custom C name")
 
         key = f"{parameter_name}_as_{c_name}" if c_name else parameter_name
         self.function.parameters[key] = p
 
-    def parse_converter(self, annotation):
-        if (isinstance(annotation, ast.Constant) and
-            type(annotation.value) is str):
-            return annotation.value, True, {}
-
-        if isinstance(annotation, ast.Name):
-            return annotation.id, False, {}
-
-        if not isinstance(annotation, ast.Call):
-            fail("Annotations must be either a name, a function call, or a string.")
-
-        name = annotation.func.id
-        symbols = globals()
+    @staticmethod
+    def parse_converter(
+            annotation: ast.expr | None
+    ) -> tuple[str, bool, ConverterArgs]:
+        match annotation:
+            case ast.Constant(value=str() as value):
+                return value, True, {}
+            case ast.Name(name):
+                return name, False, {}
+            case ast.Call(func=ast.Name(name)):
+                symbols = globals()
+                kwargs: ConverterArgs = {}
+                for node in annotation.keywords:
+                    if not isinstance(node.arg, str):
+                        fail("Cannot use a kwarg splat in a function-call annotation")
+                    kwargs[node.arg] = eval_ast_expr(node.value, symbols)
+                return name, False, kwargs
+            case _:
+                fail(
+                    "Annotations must be either a name, a function call, or a string."
+                )
 
-        kwargs = {node.arg: eval_ast_expr(node.value, symbols) for node in annotation.keywords}
-        return name, False, kwargs
+    def parse_version(self, thenceforth: str) -> VersionTuple:
+        """Parse Python version in `[from ...]` marker."""
+        assert isinstance(self.function, Function)
 
-    def parse_special_symbol(self, symbol):
-        if symbol == '*':
+        try:
+            major, minor = thenceforth.split(".")
+            return int(major), int(minor)
+        except ValueError:
+            fail(
+                f"Function {self.function.name!r}: expected format '[from major.minor]' "
+                f"where 'major' and 'minor' are integers; got {thenceforth!r}"
+            )
+
+    def parse_star(self, function: Function, version: VersionTuple | None) -> None:
+        """Parse keyword-only parameter marker '*'.
+
+        The 'version' parameter signifies the future version from which
+        the marker will take effect (None means it is already in effect).
+        """
+        if version is None:
             if self.keyword_only:
-                fail("Function " + self.function.name + " uses '*' more than once.")
+                fail(f"Function {function.name!r} uses '*' more than once.")
+            self.check_previous_star()
+            self.check_remaining_star()
             self.keyword_only = True
-        elif symbol == '[':
-            if self.parameter_state in (self.ps_start, self.ps_left_square_before):
-                self.parameter_state = self.ps_left_square_before
-            elif self.parameter_state in (self.ps_required, self.ps_group_after):
-                self.parameter_state = self.ps_group_after
-            else:
-                fail("Function " + self.function.name + " has an unsupported group configuration. (Unexpected state " + str(self.parameter_state) + ".b)")
-            self.group += 1
-            self.function.docstring_only = True
-        elif symbol == ']':
-            if not self.group:
-                fail("Function " + self.function.name + " has a ] without a matching [.")
-            if not any(p.group == self.group for p in self.function.parameters.values()):
-                fail("Function " + self.function.name + " has an empty group.\nAll groups must contain at least one parameter.")
-            self.group -= 1
-            if self.parameter_state in (self.ps_left_square_before, self.ps_group_before):
-                self.parameter_state = self.ps_group_before
-            elif self.parameter_state in (self.ps_group_after, self.ps_right_square_after):
-                self.parameter_state = self.ps_right_square_after
-            else:
-                fail("Function " + self.function.name + " has an unsupported group configuration. (Unexpected state " + str(self.parameter_state) + ".c)")
-        elif symbol == '/':
+        else:
+            if self.keyword_only:
+                fail(f"Function {function.name!r}: '* [from ...]' must precede '*'")
+            if self.deprecated_positional:
+                if self.deprecated_positional == version:
+                    fail(f"Function {function.name!r} uses '* [from "
+                         f"{version[0]}.{version[1]}]' more than once.")
+                if self.deprecated_positional < version:
+                    fail(f"Function {function.name!r}: '* [from "
+                         f"{version[0]}.{version[1]}]' must precede '* [from "
+                         f"{self.deprecated_positional[0]}.{self.deprecated_positional[1]}]'")
+        self.deprecated_positional = version
+
+    def parse_opening_square_bracket(self, function: Function) -> None:
+        """Parse opening parameter group symbol '['."""
+        match self.parameter_state:
+            case ParamState.START | ParamState.LEFT_SQUARE_BEFORE:
+                self.parameter_state = ParamState.LEFT_SQUARE_BEFORE
+            case ParamState.REQUIRED | ParamState.GROUP_AFTER:
+                self.parameter_state = ParamState.GROUP_AFTER
+            case st:
+                fail(f"Function {function.name!r} "
+                     f"has an unsupported group configuration. "
+                     f"(Unexpected state {st}.b)")
+        self.group += 1
+        function.docstring_only = True
+
+    def parse_closing_square_bracket(self, function: Function) -> None:
+        """Parse closing parameter group symbol ']'."""
+        if not self.group:
+            fail(f"Function {function.name!r} has a ']' without a matching '['.")
+        if not any(p.group == self.group for p in function.parameters.values()):
+            fail(f"Function {function.name!r} has an empty group. "
+                 "All groups must contain at least one parameter.")
+        self.group -= 1
+        match self.parameter_state:
+            case ParamState.LEFT_SQUARE_BEFORE | ParamState.GROUP_BEFORE:
+                self.parameter_state = ParamState.GROUP_BEFORE
+            case ParamState.GROUP_AFTER | ParamState.RIGHT_SQUARE_AFTER:
+                self.parameter_state = ParamState.RIGHT_SQUARE_AFTER
+            case st:
+                fail(f"Function {function.name!r} "
+                     f"has an unsupported group configuration. "
+                     f"(Unexpected state {st}.c)")
+
+    def parse_slash(self, function: Function, version: VersionTuple | None) -> None:
+        """Parse positional-only parameter marker '/'.
+
+        The 'version' parameter signifies the future version from which
+        the marker will take effect (None means it is already in effect).
+        """
+        if version is None:
+            if self.deprecated_keyword:
+                fail(f"Function {function.name!r}: '/' must precede '/ [from ...]'")
+            if self.deprecated_positional:
+                fail(f"Function {function.name!r}: '/' must precede '* [from ...]'")
+            if self.keyword_only:
+                fail(f"Function {function.name!r}: '/' must precede '*'")
             if self.positional_only:
-                fail("Function " + self.function.name + " uses '/' more than once.")
-            self.positional_only = True
-            # ps_required and ps_optional are allowed here, that allows positional-only without option groups
-            # to work (and have default values!)
-            if (self.parameter_state not in (self.ps_required, self.ps_optional, self.ps_right_square_after, self.ps_group_before)) or self.group:
-                fail("Function " + self.function.name + " has an unsupported group configuration. (Unexpected state " + str(self.parameter_state) + ".d)")
+                fail(f"Function {function.name!r} uses '/' more than once.")
+        else:
+            if self.deprecated_keyword:
+                if self.deprecated_keyword == version:
+                    fail(f"Function {function.name!r} uses '/ [from "
+                         f"{version[0]}.{version[1]}]' more than once.")
+                if self.deprecated_keyword > version:
+                    fail(f"Function {function.name!r}: '/ [from "
+                         f"{version[0]}.{version[1]}]' must precede '/ [from "
+                         f"{self.deprecated_keyword[0]}.{self.deprecated_keyword[1]}]'")
+            if self.deprecated_positional:
+                fail(f"Function {function.name!r}: '/ [from ...]' must precede '* [from ...]'")
             if self.keyword_only:
-                fail("Function " + self.function.name + " mixes keyword-only and positional-only parameters, which is unsupported.")
-            # fixup preceding parameters
-            for p in self.function.parameters.values():
-                if p.is_vararg():
-                    continue
-                if (p.kind != inspect.Parameter.POSITIONAL_OR_KEYWORD and not isinstance(p.converter, self_converter)):
-                    fail("Function " + self.function.name + " mixes keyword-only and positional-only parameters, which is unsupported.")
-                p.kind = inspect.Parameter.POSITIONAL_ONLY
-
-    def state_parameter_docstring_start(self, line):
+                fail(f"Function {function.name!r}: '/ [from ...]' must precede '*'")
+        self.positional_only = True
+        self.deprecated_keyword = version
+        if version is not None:
+            found = False
+            for p in reversed(function.parameters.values()):
+                found = p.kind is inspect.Parameter.POSITIONAL_OR_KEYWORD
+                break
+            if not found:
+                fail(f"Function {function.name!r} specifies '/ [from ...]' "
+                     f"without preceding parameters.")
+        # REQUIRED and OPTIONAL are allowed here, that allows positional-only
+        # without option groups to work (and have default values!)
+        allowed = {
+            ParamState.REQUIRED,
+            ParamState.OPTIONAL,
+            ParamState.RIGHT_SQUARE_AFTER,
+            ParamState.GROUP_BEFORE,
+        }
+        if (self.parameter_state not in allowed) or self.group:
+            fail(f"Function {function.name!r} has an unsupported group configuration. "
+                 f"(Unexpected state {self.parameter_state}.d)")
+        # fixup preceding parameters
+        for p in function.parameters.values():
+            if p.kind is inspect.Parameter.POSITIONAL_OR_KEYWORD:
+                if version is None:
+                    p.kind = inspect.Parameter.POSITIONAL_ONLY
+                elif p.deprecated_keyword is None:
+                    p.deprecated_keyword = version
+
+    def state_parameter_docstring_start(self, line: str) -> None:
+        assert self.indent.margin is not None, "self.margin.infer() has not yet been called to set the margin"
         self.parameter_docstring_indent = len(self.indent.margin)
         assert self.indent.depth == 3
         return self.next(self.state_parameter_docstring, line)
 
+    def docstring_append(self, obj: Function | Parameter, line: str) -> None:
+        """Add a rstripped line to the current docstring."""
+        # gh-80282: We filter out non-ASCII characters from the docstring,
+        # since historically, some compilers may balk on non-ASCII input.
+        # If you're using Argument Clinic in an external project,
+        # you may not need to support the same array of platforms as CPython,
+        # so you may be able to remove this restriction.
+        matches = re.finditer(r'[^\x00-\x7F]', line)
+        if offending := ", ".join([repr(m[0]) for m in matches]):
+            warn("Non-ascii characters are not allowed in docstrings:",
+                 offending)
+
+        docstring = obj.docstring
+        if docstring:
+            docstring += "\n"
+        if stripped := line.rstrip():
+            docstring += self.indent.dedent(stripped)
+        obj.docstring = docstring
+
     # every line of the docstring must start with at least F spaces,
     # where F > P.
     # these F spaces will be stripped.
-    def state_parameter_docstring(self, line):
-        stripped = line.strip()
-        if stripped.startswith('#'):
+    def state_parameter_docstring(self, line: str) -> None:
+        if not self.valid_line(line):
             return
 
         indent = self.indent.measure(line)
@@ -4917,195 +6171,166 @@ def state_parameter_docstring(self, line):
             assert self.indent.depth == 1
             return self.next(self.state_function_docstring, line)
 
-        assert self.function.parameters
-        last_parameter = next(reversed(list(self.function.parameters.values())))
-
-        new_docstring = last_parameter.docstring
-
-        if new_docstring:
-            new_docstring += '\n'
-        if stripped:
-            new_docstring += self.indent.dedent(line)
-
-        last_parameter.docstring = new_docstring
+        assert self.function and self.function.parameters
+        last_param = next(reversed(self.function.parameters.values()))
+        self.docstring_append(last_param, line)
 
     # the final stanza of the DSL is the docstring.
-    def state_function_docstring(self, line):
+    def state_function_docstring(self, line: str) -> None:
+        assert self.function is not None
+
         if self.group:
-            fail("Function " + self.function.name + " has a ] without a matching [.")
+            fail(f"Function {self.function.name!r} has a ']' without a matching '['.")
 
-        stripped = line.strip()
-        if stripped.startswith('#'):
+        if not self.valid_line(line):
             return
 
-        new_docstring = self.function.docstring
-        if new_docstring:
-            new_docstring += "\n"
-        if stripped:
-            line = self.indent.dedent(line).rstrip()
-        else:
-            line = ''
-        new_docstring += line
-        self.function.docstring = new_docstring
-
-    def format_docstring(self):
-        f = self.function
-
-        new_or_init = f.kind in (METHOD_NEW, METHOD_INIT)
-        if new_or_init and not f.docstring:
-            # don't render a docstring at all, no signature, nothing.
-            return f.docstring
+        self.docstring_append(self.function, line)
 
+    def format_docstring_signature(
+        self, f: Function, parameters: list[Parameter]
+    ) -> str:
         text, add, output = _text_accumulator()
-        parameters = f.render_parameters
-
-        ##
-        ## docstring first line
-        ##
-
-        if new_or_init:
-            # classes get *just* the name of the class
-            # not __new__, not __init__, and not module.classname
-            assert f.cls
-            add(f.cls.name)
+        add(f.displayname)
+        if self.forced_text_signature:
+            add(self.forced_text_signature)
         else:
-            add(f.name)
-        add('(')
-
-        # populate "right_bracket_count" field for every parameter
-        assert parameters, "We should always have a self parameter. " + repr(f)
-        assert isinstance(parameters[0].converter, self_converter)
-        # self is always positional-only.
-        assert parameters[0].is_positional_only()
-        parameters[0].right_bracket_count = 0
-        positional_only = True
-        for p in parameters[1:]:
-            if not p.is_positional_only():
-                positional_only = False
-            else:
-                assert positional_only
-            if positional_only:
-                p.right_bracket_count = abs(p.group)
-            else:
-                # don't put any right brackets around non-positional-only parameters, ever.
-                p.right_bracket_count = 0
-
-        right_bracket_count = 0
-
-        def fix_right_bracket_count(desired):
-            nonlocal right_bracket_count
-            s = ''
-            while right_bracket_count < desired:
-                s += '['
-                right_bracket_count += 1
-            while right_bracket_count > desired:
-                s += ']'
-                right_bracket_count -= 1
-            return s
-
-        need_slash = False
-        added_slash = False
-        need_a_trailing_slash = False
-
-        # we only need a trailing slash:
-        #   * if this is not a "docstring_only" signature
-        #   * and if the last *shown* parameter is
-        #     positional only
-        if not f.docstring_only:
-            for p in reversed(parameters):
-                if not p.converter.show_in_signature:
-                    continue
-                if p.is_positional_only():
-                    need_a_trailing_slash = True
-                break
+            add('(')
+
+            # populate "right_bracket_count" field for every parameter
+            assert parameters, "We should always have a self parameter. " + repr(f)
+            assert isinstance(parameters[0].converter, self_converter)
+            # self is always positional-only.
+            assert parameters[0].is_positional_only()
+            assert parameters[0].right_bracket_count == 0
+            positional_only = True
+            for p in parameters[1:]:
+                if not p.is_positional_only():
+                    positional_only = False
+                else:
+                    assert positional_only
+                if positional_only:
+                    p.right_bracket_count = abs(p.group)
+                else:
+                    # don't put any right brackets around non-positional-only parameters, ever.
+                    p.right_bracket_count = 0
+
+            right_bracket_count = 0
+
+            def fix_right_bracket_count(desired: int) -> str:
+                nonlocal right_bracket_count
+                s = ''
+                while right_bracket_count < desired:
+                    s += '['
+                    right_bracket_count += 1
+                while right_bracket_count > desired:
+                    s += ']'
+                    right_bracket_count -= 1
+                return s
+
+            need_slash = False
+            added_slash = False
+            need_a_trailing_slash = False
+
+            # we only need a trailing slash:
+            #   * if this is not a "docstring_only" signature
+            #   * and if the last *shown* parameter is
+            #     positional only
+            if not f.docstring_only:
+                for p in reversed(parameters):
+                    if not p.converter.show_in_signature:
+                        continue
+                    if p.is_positional_only():
+                        need_a_trailing_slash = True
+                    break
 
 
-        added_star = False
+            added_star = False
 
-        first_parameter = True
-        last_p = parameters[-1]
-        line_length = len(''.join(text))
-        indent = " " * line_length
-        def add_parameter(text):
-            nonlocal line_length
-            nonlocal first_parameter
-            if first_parameter:
-                s = text
-                first_parameter = False
-            else:
-                s = ' ' + text
-                if line_length + len(s) >= 72:
-                    add('\n')
-                    add(indent)
-                    line_length = len(indent)
+            first_parameter = True
+            last_p = parameters[-1]
+            line_length = len(''.join(text))
+            indent = " " * line_length
+            def add_parameter(text: str) -> None:
+                nonlocal line_length
+                nonlocal first_parameter
+                if first_parameter:
                     s = text
-            line_length += len(s)
-            add(s)
-
-        for p in parameters:
-            if not p.converter.show_in_signature:
-                continue
-            assert p.name
+                    first_parameter = False
+                else:
+                    s = ' ' + text
+                    if line_length + len(s) >= 72:
+                        add('\n')
+                        add(indent)
+                        line_length = len(indent)
+                        s = text
+                line_length += len(s)
+                add(s)
+
+            for p in parameters:
+                if not p.converter.show_in_signature:
+                    continue
+                assert p.name
 
-            is_self = isinstance(p.converter, self_converter)
-            if is_self and f.docstring_only:
-                # this isn't a real machine-parsable signature,
-                # so let's not print the "self" parameter
-                continue
+                is_self = isinstance(p.converter, self_converter)
+                if is_self and f.docstring_only:
+                    # this isn't a real machine-parsable signature,
+                    # so let's not print the "self" parameter
+                    continue
 
-            if p.is_positional_only():
-                need_slash = not f.docstring_only
-            elif need_slash and not (added_slash or p.is_positional_only()):
-                added_slash = True
-                add_parameter('/,')
-
-            if p.is_keyword_only() and not added_star:
-                added_star = True
-                add_parameter('*,')
-
-            p_add, p_output = text_accumulator()
-            p_add(fix_right_bracket_count(p.right_bracket_count))
-
-            if isinstance(p.converter, self_converter):
-                # annotate first parameter as being a "self".
-                #
-                # if inspect.Signature gets this function,
-                # and it's already bound, the self parameter
-                # will be stripped off.
-                #
-                # if it's not bound, it should be marked
-                # as positional-only.
-                #
-                # note: we don't print "self" for __init__,
-                # because this isn't actually the signature
-                # for __init__.  (it can't be, __init__ doesn't
-                # have a docstring.)  if this is an __init__
-                # (or __new__), then this signature is for
-                # calling the class to construct a new instance.
-                p_add('$')
+                if p.is_positional_only():
+                    need_slash = not f.docstring_only
+                elif need_slash and not (added_slash or p.is_positional_only()):
+                    added_slash = True
+                    add_parameter('/,')
+
+                if p.is_keyword_only() and not added_star:
+                    added_star = True
+                    add_parameter('*,')
+
+                p_add, p_output = text_accumulator()
+                p_add(fix_right_bracket_count(p.right_bracket_count))
+
+                if isinstance(p.converter, self_converter):
+                    # annotate first parameter as being a "self".
+                    #
+                    # if inspect.Signature gets this function,
+                    # and it's already bound, the self parameter
+                    # will be stripped off.
+                    #
+                    # if it's not bound, it should be marked
+                    # as positional-only.
+                    #
+                    # note: we don't print "self" for __init__,
+                    # because this isn't actually the signature
+                    # for __init__.  (it can't be, __init__ doesn't
+                    # have a docstring.)  if this is an __init__
+                    # (or __new__), then this signature is for
+                    # calling the class to construct a new instance.
+                    p_add('$')
 
-            if p.is_vararg():
-                p_add("*")
+                if p.is_vararg():
+                    p_add("*")
 
-            name = p.converter.signature_name or p.name
-            p_add(name)
+                name = p.converter.signature_name or p.name
+                p_add(name)
 
-            if not p.is_vararg() and p.converter.is_optional():
-                p_add('=')
-                value = p.converter.py_default
-                if not value:
-                    value = repr(p.converter.default)
-                p_add(value)
+                if not p.is_vararg() and p.converter.is_optional():
+                    p_add('=')
+                    value = p.converter.py_default
+                    if not value:
+                        value = repr(p.converter.default)
+                    p_add(value)
 
-            if (p != last_p) or need_a_trailing_slash:
-                p_add(',')
+                if (p != last_p) or need_a_trailing_slash:
+                    p_add(',')
 
-            add_parameter(p_output())
+                add_parameter(p_output())
 
-        add(fix_right_bracket_count(0))
-        if need_a_trailing_slash:
-            add_parameter('/')
-        add(')')
+            add(fix_right_bracket_count(0))
+            if need_a_trailing_slash:
+                add_parameter('/')
+            add(')')
 
         # PEP 8 says:
         #
@@ -5123,35 +6348,27 @@ def add_parameter(text):
         if not f.docstring_only:
             add("\n" + sig_end_marker + "\n")
 
-        docstring_first_line = output()
+        signature_line = output()
 
         # now fix up the places where the brackets look wrong
-        docstring_first_line = docstring_first_line.replace(', ]', ',] ')
+        return signature_line.replace(', ]', ',] ')
 
-        # okay.  now we're officially building the "parameters" section.
-        # create substitution text for {parameters}
-        spacer_line = False
-        for p in parameters:
-            if not p.docstring.strip():
-                continue
-            if spacer_line:
+    @staticmethod
+    def format_docstring_parameters(params: list[Parameter]) -> str:
+        """Create substitution text for {parameters}"""
+        add, output = text_accumulator()
+        for p in params:
+            if p.docstring:
+                add(p.render_docstring())
                 add('\n')
-            else:
-                spacer_line = True
-            add("  ")
-            add(p.name)
-            add('\n')
-            add(textwrap.indent(rstrip_lines(p.docstring.rstrip()), "    "))
-        parameters = output()
-        if parameters:
-            parameters += '\n'
-
-        ##
-        ## docstring body
-        ##
+        return output()
 
-        docstring = f.docstring.rstrip()
-        lines = [line.rstrip() for line in docstring.split('\n')]
+    def format_docstring(self) -> str:
+        assert self.function is not None
+        f = self.function
+        if f.kind.new_or_init and not f.docstring:
+            # don't render a docstring at all, no signature, nothing.
+            return f.docstring
 
         # Enforce the summary line!
         # The first line of a docstring should be a summary of the function.
@@ -5165,63 +6382,74 @@ def add_parameter(text):
         # Guido said Clinic should enforce this:
         # http://mail.python.org/pipermail/python-dev/2013-June/127110.html
 
+        lines = f.docstring.split('\n')
         if len(lines) >= 2:
             if lines[1]:
-                fail("Docstring for " + f.full_name + " does not have a summary line!\n" +
-                    "Every non-blank function docstring must start with\n" +
-                    "a single line summary followed by an empty line.")
+                fail(f"Docstring for {f.full_name!r} does not have a summary line!\n"
+                     "Every non-blank function docstring must start with "
+                     "a single line summary followed by an empty line.")
         elif len(lines) == 1:
             # the docstring is only one line right now--the summary line.
             # add an empty line after the summary line so we have space
             # between it and the {parameters} we're about to add.
             lines.append('')
 
-        parameters_marker_count = len(docstring.split('{parameters}')) - 1
+        parameters_marker_count = len(f.docstring.split('{parameters}')) - 1
         if parameters_marker_count > 1:
             fail('You may not specify {parameters} more than once in a docstring!')
 
+        # insert signature at front and params after the summary line
         if not parameters_marker_count:
-            # insert after summary line
             lines.insert(2, '{parameters}')
+        lines.insert(0, '{signature}')
 
-        # insert at front of docstring
-        lines.insert(0, docstring_first_line)
-
+        # finalize docstring
+        params = f.render_parameters
+        parameters = self.format_docstring_parameters(params)
+        signature = self.format_docstring_signature(f, params)
         docstring = "\n".join(lines)
+        return linear_format(docstring,
+                             signature=signature,
+                             parameters=parameters).rstrip()
 
-        add(docstring)
-        docstring = output()
+    def check_remaining_star(self, lineno: int | None = None) -> None:
+        assert isinstance(self.function, Function)
 
-        docstring = linear_format(docstring, parameters=parameters)
-        docstring = docstring.rstrip()
+        if self.keyword_only:
+            symbol = '*'
+        elif self.deprecated_positional:
+            symbol = '* [from ...]'
+        else:
+            return
+
+        for p in reversed(self.function.parameters.values()):
+            if self.keyword_only:
+                if p.kind == inspect.Parameter.KEYWORD_ONLY:
+                    return
+            elif self.deprecated_positional:
+                if p.deprecated_positional == self.deprecated_positional:
+                    return
+            break
+
+        fail(f"Function {self.function.name!r} specifies {symbol!r} "
+             f"without following parameters.", line_number=lineno)
+
+    def check_previous_star(self, lineno: int | None = None) -> None:
+        assert isinstance(self.function, Function)
+
+        for p in self.function.parameters.values():
+            if p.kind == inspect.Parameter.VAR_POSITIONAL:
+                fail(f"Function {self.function.name!r} uses '*' more than once.")
 
-        return docstring
 
-    def state_terminal(self, line):
+    def do_post_block_processing_cleanup(self, lineno: int) -> None:
         """
         Called when processing the block is done.
         """
-        assert not line
-
         if not self.function:
             return
 
-        if self.keyword_only:
-            values = self.function.parameters.values()
-            if not values:
-                no_parameter_after_star = True
-            else:
-                last_parameter = next(reversed(list(values)))
-                no_parameter_after_star = last_parameter.kind != inspect.Parameter.KEYWORD_ONLY
-            if no_parameter_after_star:
-                fail("Function " + self.function.name + " specifies '*' without any parameters afterwards.")
-
-        # remove trailing whitespace from all parameter docstrings
-        for name, value in self.function.parameters.items():
-            if not value:
-                continue
-            value.docstring = value.docstring.rstrip()
-
+        self.check_remaining_star(lineno)
         self.function.docstring = self.format_docstring()
 
 
@@ -5236,16 +6464,15 @@ def state_terminal(self, line):
 #   "clinic", handles the Clinic DSL
 #   "python", handles running Python code
 #
-parsers = {'clinic' : DSLParser, 'python': PythonParser}
-
-
-clinic = None
+parsers: dict[str, Callable[[Clinic], Parser]] = {
+    'clinic': DSLParser,
+    'python': PythonParser,
+}
 
 
-def main(argv):
-    import sys
-    import argparse
+def create_cli() -> argparse.ArgumentParser:
     cmdline = argparse.ArgumentParser(
+        prog="clinic.py",
         description="""Preprocessor for CPython C files.
 
 The purpose of the Argument Clinic is automating all the boilerplate involved
@@ -5253,25 +6480,37 @@ def main(argv):
 signatures ("docstrings") for CPython builtins.
 
 For more information see https://docs.python.org/3/howto/clinic.html""")
-    cmdline.add_argument("-f", "--force", action='store_true')
-    cmdline.add_argument("-o", "--output", type=str)
-    cmdline.add_argument("-v", "--verbose", action='store_true')
-    cmdline.add_argument("--converters", action='store_true')
+    cmdline.add_argument("-f", "--force", action='store_true',
+                         help="force output regeneration")
+    cmdline.add_argument("-o", "--output", type=str,
+                         help="redirect file output to OUTPUT")
+    cmdline.add_argument("-v", "--verbose", action='store_true',
+                         help="enable verbose mode")
+    cmdline.add_argument("--converters", action='store_true',
+                         help=("print a list of all supported converters "
+                               "and return converters"))
     cmdline.add_argument("--make", action='store_true',
-                         help="Walk --srcdir to run over all relevant files.")
+                         help="walk --srcdir to run over all relevant files")
     cmdline.add_argument("--srcdir", type=str, default=os.curdir,
-                         help="The directory tree to walk in --make mode.")
-    cmdline.add_argument("filename", type=str, nargs="*")
-    ns = cmdline.parse_args(argv)
-
+                         help="the directory tree to walk in --make mode")
+    cmdline.add_argument("--exclude", type=str, action="append",
+                         help=("a file to exclude in --make mode; "
+                               "can be given multiple times"))
+    cmdline.add_argument("--limited", dest="limited_capi", action='store_true',
+                         help="use the Limited C API")
+    cmdline.add_argument("filename", metavar="FILE", type=str, nargs="*",
+                         help="the list of files to process")
+    return cmdline
+
+
+def run_clinic(parser: argparse.ArgumentParser, ns: argparse.Namespace) -> None:
     if ns.converters:
         if ns.filename:
-            print("Usage error: can't specify --converters and a filename at the same time.")
-            print()
-            cmdline.print_usage()
-            sys.exit(-1)
-        converters = []
-        return_converters = []
+            parser.error(
+                "can't specify --converters and a filename at the same time"
+            )
+        converters: list[tuple[str, str]] = []
+        return_converters: list[tuple[str, str]] = []
         ignored = set("""
             add_c_converter
             add_c_return_converter
@@ -5287,7 +6526,7 @@ def main(argv):
                 if name in ignored:
                     continue
                 if name.endswith(suffix):
-                    ids.append((name, name[:-len(suffix)]))
+                    ids.append((name, name.removesuffix(suffix)))
                     break
         print()
 
@@ -5315,7 +6554,7 @@ def main(argv):
                 for parameter_name, parameter in signature.parameters.items():
                     if parameter.kind == inspect.Parameter.KEYWORD_ONLY:
                         if parameter.default != inspect.Parameter.empty:
-                            s = '{}={!r}'.format(parameter_name, parameter.default)
+                            s = f'{parameter_name}={parameter.default!r}'
                         else:
                             s = parameter_name
                         parameters.append(s)
@@ -5323,47 +6562,60 @@ def main(argv):
             print()
         print("All converters also accept (c_default=None, py_default=None, annotation=None).")
         print("All return converters also accept (py_default=None).")
-        sys.exit(0)
+        return
 
     if ns.make:
         if ns.output or ns.filename:
-            print("Usage error: can't use -o or filenames with --make.")
-            print()
-            cmdline.print_usage()
-            sys.exit(-1)
+            parser.error("can't use -o or filenames with --make")
         if not ns.srcdir:
-            print("Usage error: --srcdir must not be empty with --make.")
-            print()
-            cmdline.print_usage()
-            sys.exit(-1)
+            parser.error("--srcdir must not be empty with --make")
+        if ns.exclude:
+            excludes = [os.path.join(ns.srcdir, f) for f in ns.exclude]
+            excludes = [os.path.normpath(f) for f in excludes]
+        else:
+            excludes = []
         for root, dirs, files in os.walk(ns.srcdir):
             for rcs_dir in ('.svn', '.git', '.hg', 'build', 'externals'):
                 if rcs_dir in dirs:
                     dirs.remove(rcs_dir)
             for filename in files:
-                if not (filename.endswith('.c') or filename.endswith('.h')):
+                # handle .c, .cpp and .h files
+                if not filename.endswith(('.c', '.cpp', '.h')):
                     continue
                 path = os.path.join(root, filename)
+                path = os.path.normpath(path)
+                if path in excludes:
+                    continue
                 if ns.verbose:
                     print(path)
-                parse_file(path, verify=not ns.force)
+                parse_file(path,
+                           verify=not ns.force, limited_capi=ns.limited_capi)
         return
 
     if not ns.filename:
-        cmdline.print_usage()
-        sys.exit(-1)
+        parser.error("no input files")
 
     if ns.output and len(ns.filename) > 1:
-        print("Usage error: can't use -o with multiple filenames.")
-        print()
-        cmdline.print_usage()
-        sys.exit(-1)
+        parser.error("can't use -o with multiple filenames")
 
     for filename in ns.filename:
         if ns.verbose:
             print(filename)
-        parse_file(filename, output=ns.output, verify=not ns.force)
+        parse_file(filename, output=ns.output,
+                   verify=not ns.force, limited_capi=ns.limited_capi)
+
+
+def main(argv: list[str] | None = None) -> NoReturn:
+    parser = create_cli()
+    args = parser.parse_args(argv)
+    try:
+        run_clinic(parser, args)
+    except ClinicError as exc:
+        sys.stderr.write(exc.report())
+        sys.exit(1)
+    else:
+        sys.exit(0)
 
 
 if __name__ == "__main__":
-    sys.exit(main(sys.argv[1:]))
+    main()
diff --git a/Tools/clinic/cpp.py b/Tools/clinic/cpp.py
index bc2cc713aac394..16eee6fc399491 100644
--- a/Tools/clinic/cpp.py
+++ b/Tools/clinic/cpp.py
@@ -1,6 +1,7 @@
+import dataclasses as dc
 import re
 import sys
-from collections.abc import Callable
+from typing import NoReturn
 
 
 TokenAndCondition = tuple[str, str]
@@ -14,6 +15,11 @@ def negate(condition: str) -> str:
         return condition[1:]
     return "!" + condition
 
+
+is_a_simple_defined = re.compile(r'^defined\s*\(\s*[A-Za-z0-9_]+\s*\)$').match
+
+
+@dc.dataclass(repr=False)
 class Monitor:
     """
     A simple C preprocessor that scans C source and computes, line by line,
@@ -26,25 +32,23 @@ class Monitor:
 
     Anyway this implementation seems to work well enough for the CPython sources.
     """
+    filename: str | None = None
+    _: dc.KW_ONLY
+    verbose: bool = False
 
-    is_a_simple_defined: Callable[[str], re.Match[str] | None]
-    is_a_simple_defined = re.compile(r'^defined\s*\(\s*[A-Za-z0-9_]+\s*\)$').match
-
-    def __init__(self, filename=None, *, verbose: bool = False):
+    def __post_init__(self) -> None:
         self.stack: TokenStack = []
         self.in_comment = False
         self.continuation: str | None = None
         self.line_number = 0
-        self.filename = filename
-        self.verbose = verbose
 
     def __repr__(self) -> str:
-        return ''.join((
-            '<Monitor ',
+        parts = (
             str(id(self)),
-            " line=", str(self.line_number),
-            " condition=", repr(self.condition()),
-            ">"))
+            f"line={self.line_number}",
+            f"condition={self.condition()!r}"
+        )
+        return f"<clinic.Monitor {' '.join(parts)}>"
 
     def status(self) -> str:
         return str(self.line_number).rjust(4) + ": " + self.condition()
@@ -55,7 +59,7 @@ def condition(self) -> str:
         """
         return " && ".join(condition for token, condition in self.stack)
 
-    def fail(self, *a):
+    def fail(self, *a: object) -> NoReturn:
         if self.filename:
             filename = " " + self.filename
         else:
@@ -64,14 +68,6 @@ def fail(self, *a):
         print("   ", ' '.join(str(x) for x in a))
         sys.exit(-1)
 
-    def close(self):
-        if self.stack:
-            self.fail("Ended file while still in a preprocessor conditional block!")
-
-    def write(self, s: str) -> None:
-        for line in s.split("\n"):
-            self.writeline(line)
-
     def writeline(self, line: str) -> None:
         self.line_number += 1
         line = line.strip()
@@ -151,7 +147,7 @@ def pop_stack() -> TokenAndCondition:
             if not condition:
                 self.fail("Invalid format for #" + token + " line: no argument!")
             if token in {'if', 'elif'}:
-                if not self.is_a_simple_defined(condition):
+                if not is_a_simple_defined(condition):
                     condition = "(" + condition + ")"
                 if token == 'elif':
                     previous_token, previous_condition = pop_stack()
@@ -182,11 +178,17 @@ def pop_stack() -> TokenAndCondition:
         if self.verbose:
             print(self.status())
 
-if __name__ == '__main__':
-    for filename in sys.argv[1:]:
-        with open(filename, "rt") as f:
+
+def _main(filenames: list[str] | None = None) -> None:
+    filenames = filenames or sys.argv[1:]
+    for filename in filenames:
+        with open(filename) as f:
             cpp = Monitor(filename, verbose=True)
             print()
             print(filename)
-            for line_number, line in enumerate(f.read().split('\n'), 1):
+            for line in f:
                 cpp.writeline(line)
+
+
+if __name__ == '__main__':
+    _main()
diff --git a/Tools/clinic/mypy.ini b/Tools/clinic/mypy.ini
index 3c5643e789be37..b1fdad673c61a1 100644
--- a/Tools/clinic/mypy.ini
+++ b/Tools/clinic/mypy.ini
@@ -1,11 +1,12 @@
 [mypy]
+files = Tools/clinic/
+pretty = True
+
 # make sure clinic can still be run on Python 3.10
 python_version = 3.10
-pretty = True
-enable_error_code = ignore-without-code
-disallow_any_generics = True
+
+# and be strict!
+strict = True
 strict_concatenate = True
-warn_redundant_casts = True
-warn_unused_ignores = True
-warn_unused_configs = True
-files = Tools/clinic/
+enable_error_code = ignore-without-code,redundant-expr,truthy-bool
+warn_unreachable = True
diff --git a/Tools/clinic/requirements-dev.txt b/Tools/clinic/requirements-dev.txt
deleted file mode 100644
index 154934003c31c4..00000000000000
--- a/Tools/clinic/requirements-dev.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-# Requirements file for external linters and checks we run on Tools/clinic/ in CI
-mypy==1.3.0
diff --git a/Tools/freeze/README b/Tools/freeze/README
index 098107c5d1a9d2..9b3ea1f2c723b1 100644
--- a/Tools/freeze/README
+++ b/Tools/freeze/README
@@ -98,13 +98,13 @@ use Tkinter without a Tcl/Tk installation. The best way to ship a
 frozen Tkinter program is to decide in advance where you are going
 to place the Tcl and Tk library files in the distributed setup, and
 then declare these directories in your frozen Python program using
-the TCL_LIBRARY, TK_LIBRARY and TIX_LIBRARY environment variables.
+the TCL_LIBRARY and TK_LIBRARY environment variables.
 
 For example, assume you will ship your frozen program in the directory
 <root>/bin/windows-x86 and will place your Tcl library files
 in <root>/lib/tcl8.2 and your Tk library files in <root>/lib/tk8.2. Then
 placing the following lines in your frozen Python script before importing
-Tkinter or Tix would set the environment correctly for Tcl/Tk/Tix:
+tkinter would set the environment correctly for Tcl/Tk:
 
 import os
 import os.path
@@ -115,17 +115,14 @@ if sys.platform == "win32":
    sys.path = ['', '..\\..\\lib\\python-2.0']
    os.environ['TCL_LIBRARY'] = RootDir + '\\lib\\tcl8.2'
    os.environ['TK_LIBRARY'] = RootDir + '\\lib\\tk8.2'
-   os.environ['TIX_LIBRARY'] = RootDir + '\\lib\\tix8.1'
 elif sys.platform == "linux2":
    sys.path = ['', '../../lib/python-2.0']
    os.environ['TCL_LIBRARY'] = RootDir + '/lib/tcl8.2'
    os.environ['TK_LIBRARY'] = RootDir + '/lib/tk8.2'
-   os.environ['TIX_LIBRARY'] = RootDir + '/lib/tix8.1'
 elif sys.platform == "solaris":
    sys.path = ['', '../../lib/python-2.0']
    os.environ['TCL_LIBRARY'] = RootDir + '/lib/tcl8.2'
    os.environ['TK_LIBRARY'] = RootDir + '/lib/tk8.2'
-   os.environ['TIX_LIBRARY'] = RootDir + '/lib/tix8.1'
 
 This also adds <root>/lib/python-2.0 to your Python path
 for any Python files such as _tkinter.pyd you may need.
@@ -148,10 +145,9 @@ executable would be possible, in which the Tcl/Tk library files are
 incorporated in a frozen Python module as string literals and written
 to a temporary location when the program runs; this is currently left
 as an exercise for the reader.  An easier approach is to freeze the
-Tcl/Tk/Tix code into the dynamic libraries using the Tcl ET code,
-or the Tix Stand-Alone-Module code. Of course, you can also simply
-require that Tcl/Tk is required on the target installation, but be
-careful that the version corresponds.
+Tcl/Tk code into the dynamic libraries using the Tcl ET code.
+Of course, you can also simply require that Tcl/Tk is required on the
+target installation, but be careful that the version corresponds.
 
 There are some caveats using frozen Tkinter applications:
 	Under Windows if you use the -s windows option, writing
diff --git a/Tools/freeze/test/freeze.py b/Tools/freeze/test/freeze.py
index f6a5adb4519fdb..1e3687dbb807a6 100644
--- a/Tools/freeze/test/freeze.py
+++ b/Tools/freeze/test/freeze.py
@@ -1,14 +1,22 @@
 import os
 import os.path
-import re
 import shlex
 import shutil
 import subprocess
+import sysconfig
+from test import support
+
+
+def get_python_source_dir():
+    src_dir = sysconfig.get_config_var('abs_srcdir')
+    if not src_dir:
+        src_dir = sysconfig.get_config_var('srcdir')
+    return os.path.abspath(src_dir)
 
 
 TESTS_DIR = os.path.dirname(__file__)
 TOOL_ROOT = os.path.dirname(TESTS_DIR)
-SRCDIR = os.path.dirname(os.path.dirname(TOOL_ROOT))
+SRCDIR = get_python_source_dir()
 
 MAKE = shutil.which('make')
 FREEZE = os.path.join(TOOL_ROOT, 'freeze.py')
@@ -19,8 +27,10 @@ class UnsupportedError(Exception):
     """The operation isn't supported."""
 
 
-def _run_quiet(cmd, cwd=None):
-    #print(f'# {" ".join(shlex.quote(a) for a in cmd)}')
+def _run_quiet(cmd, *, cwd=None):
+    if cwd:
+        print('+', 'cd', cwd, flush=True)
+    print('+', shlex.join(cmd), flush=True)
     try:
         return subprocess.run(
             cmd,
@@ -40,8 +50,8 @@ def _run_quiet(cmd, cwd=None):
         raise
 
 
-def _run_stdout(cmd, cwd=None):
-    proc = _run_quiet(cmd, cwd)
+def _run_stdout(cmd):
+    proc = _run_quiet(cmd)
     return proc.stdout.strip()
 
 
@@ -75,60 +85,26 @@ def ensure_opt(args, name, value):
 
 
 def copy_source_tree(newroot, oldroot):
-    print(f'copying the source tree into {newroot}...')
+    print(f'copying the source tree from {oldroot} to {newroot}...')
     if os.path.exists(newroot):
         if newroot == SRCDIR:
             raise Exception('this probably isn\'t what you wanted')
         shutil.rmtree(newroot)
 
-    def ignore_non_src(src, names):
-        """Turns what could be a 1000M copy into a 100M copy."""
-        # Don't copy the ~600M+ of needless git repo metadata.
-        # source only, ignore cached .pyc files.
-        subdirs_to_skip = {'.git', '__pycache__'}
-        if os.path.basename(src) == 'Doc':
-            # Another potential ~250M+ of non test related data.
-            subdirs_to_skip.add('build')
-            subdirs_to_skip.add('venv')
-        return subdirs_to_skip
-
-    shutil.copytree(oldroot, newroot, ignore=ignore_non_src)
+    shutil.copytree(oldroot, newroot, ignore=support.copy_python_src_ignore)
     if os.path.exists(os.path.join(newroot, 'Makefile')):
-        _run_quiet([MAKE, 'clean'], newroot)
-
-
-def get_makefile_var(builddir, name):
-    regex = re.compile(rf'^{name} *=\s*(.*?)\s*$')
-    filename = os.path.join(builddir, 'Makefile')
-    try:
-        infile = open(filename, encoding='utf-8')
-    except FileNotFoundError:
-        return None
-    with infile:
-        for line in infile:
-            m = regex.match(line)
-            if m:
-                value, = m.groups()
-                return value or ''
-    return None
-
-
-def get_config_var(builddir, name):
-    python = os.path.join(builddir, 'python')
-    if os.path.isfile(python):
-        cmd = [python, '-c',
-               f'import sysconfig; print(sysconfig.get_config_var("{name}"))']
-        try:
-            return _run_stdout(cmd)
-        except subprocess.CalledProcessError:
-            pass
-    return get_makefile_var(builddir, name)
+        # Out-of-tree builds require a clean srcdir. "make clean" keeps
+        # the "python" program, so use "make distclean" instead.
+        _run_quiet([MAKE, 'distclean'], cwd=newroot)
 
 
 ##################################
 # freezing
 
 def prepare(script=None, outdir=None):
+    print()
+    print("cwd:", os.getcwd())
+
     if not outdir:
         outdir = OUTDIR
     os.makedirs(outdir, exist_ok=True)
@@ -151,37 +127,33 @@ def prepare(script=None, outdir=None):
 
     # Run configure.
     print(f'configuring python in {builddir}...')
-    cmd = [
-        os.path.join(srcdir, 'configure'),
-        *shlex.split(get_config_var(srcdir, 'CONFIG_ARGS') or ''),
-    ]
+    config_args = shlex.split(sysconfig.get_config_var('CONFIG_ARGS') or '')
+    cmd = [os.path.join(srcdir, 'configure'), *config_args]
     ensure_opt(cmd, 'cache-file', os.path.join(outdir, 'python-config.cache'))
     prefix = os.path.join(outdir, 'python-installation')
     ensure_opt(cmd, 'prefix', prefix)
-    _run_quiet(cmd, builddir)
+    _run_quiet(cmd, cwd=builddir)
 
     if not MAKE:
         raise UnsupportedError('make')
 
-    cores = os.cpu_count()
+    cores = os.process_cpu_count()
     if cores and cores >= 3:
         # this test is most often run as part of the whole suite with a lot
         # of other tests running in parallel, from 1-2 vCPU systems up to
         # people's NNN core beasts. Don't attempt to use it all.
-        parallel = f'-j{cores*2//3}'
+        jobs = cores * 2 // 3
+        parallel = f'-j{jobs}'
     else:
         parallel = '-j2'
 
     # Build python.
     print(f'building python {parallel=} in {builddir}...')
-    if os.path.exists(os.path.join(srcdir, 'Makefile')):
-        # Out-of-tree builds require a clean srcdir.
-        _run_quiet([MAKE, '-C', srcdir, 'clean'])
-    _run_quiet([MAKE, '-C', builddir, parallel])
+    _run_quiet([MAKE, parallel], cwd=builddir)
 
     # Install the build.
     print(f'installing python into {prefix}...')
-    _run_quiet([MAKE, '-C', builddir, 'install'])
+    _run_quiet([MAKE, 'install'], cwd=builddir)
     python = os.path.join(prefix, 'bin', 'python3')
 
     return outdir, scriptfile, python
@@ -194,8 +166,8 @@ def freeze(python, scriptfile, outdir):
     print(f'freezing {scriptfile}...')
     os.makedirs(outdir, exist_ok=True)
     # Use -E to ignore PYTHONSAFEPATH
-    _run_quiet([python, '-E', FREEZE, '-o', outdir, scriptfile], outdir)
-    _run_quiet([MAKE, '-C', os.path.dirname(scriptfile)])
+    _run_quiet([python, '-E', FREEZE, '-o', outdir, scriptfile], cwd=outdir)
+    _run_quiet([MAKE], cwd=os.path.dirname(scriptfile))
 
     name = os.path.basename(scriptfile).rpartition('.')[0]
     executable = os.path.join(outdir, name)
diff --git a/Tools/gdb/libpython.py b/Tools/gdb/libpython.py
index e38bd59e20a305..5ef55524c11be2 100755
--- a/Tools/gdb/libpython.py
+++ b/Tools/gdb/libpython.py
@@ -111,26 +111,6 @@ def safe_range(val):
     # threshold in case the data was corrupted
     return range(safety_limit(int(val)))
 
-try:
-    os_fsencode = os.fsencode
-except AttributeError:
-    def os_fsencode(filename):
-        if not isinstance(filename, unicode):
-            return filename
-        encoding = sys.getfilesystemencoding()
-        if encoding == 'mbcs':
-            # mbcs doesn't support surrogateescape
-            return filename.encode(encoding)
-        encoded = []
-        for char in filename:
-            # surrogateescape error handler
-            if 0xDC80 <= ord(char) <= 0xDCFF:
-                byte = chr(ord(char) - 0xDC00)
-            else:
-                byte = char.encode(encoding)
-            encoded.append(byte)
-        return ''.join(encoded)
-
 class StringTruncated(RuntimeError):
     pass
 
@@ -174,16 +154,12 @@ def __init__(self, gdbval, cast_to=None):
 
     def field(self, name):
         '''
-        Get the gdb.Value for the given field within the PyObject, coping with
-        some python 2 versus python 3 differences.
+        Get the gdb.Value for the given field within the PyObject.
 
         Various libpython types are defined using the "PyObject_HEAD" and
         "PyObject_VAR_HEAD" macros.
 
-        In Python 2, this these are defined so that "ob_type" and (for a var
-        object) "ob_size" are fields of the type in question.
-
-        In Python 3, this is defined as an embedded PyVarObject type thus:
+        In Python, this is defined as an embedded PyVarObject type thus:
            PyVarObject ob_base;
         so that the "ob_size" field is located insize the "ob_base" field, and
         the "ob_type" is most easily accessed by casting back to a (PyObject*).
@@ -204,8 +180,7 @@ def field(self, name):
 
     def pyop_field(self, name):
         '''
-        Get a PyObjectPtr for the given PyObject* field within this PyObject,
-        coping with some python 2 versus python 3 differences.
+        Get a PyObjectPtr for the given PyObject* field within this PyObject.
         '''
         return PyObjectPtr.from_pyobject_ptr(self.field(name))
 
@@ -924,7 +899,7 @@ def proxyval(self, visited):
         return result
 
     def write_repr(self, out, visited):
-        # Write this out as a Python 3 int literal, i.e. without the "L" suffix
+        # Write this out as a Python int literal
         proxy = self.proxyval(visited)
         out.write("%s" % proxy)
 
@@ -1034,14 +1009,18 @@ def __init__(self, gdbval):
         self._gdbval = gdbval
 
         if not self.is_optimized_out():
-            self.co = self._f_code()
-            self.co_name = self.co.pyop_field('co_name')
-            self.co_filename = self.co.pyop_field('co_filename')
-
-            self.f_lasti = self._f_lasti()
-            self.co_nlocals = int_from_int(self.co.field('co_nlocals'))
-            pnames = self.co.field('co_localsplusnames')
-            self.co_localsplusnames = PyTupleObjectPtr.from_pyobject_ptr(pnames)
+            try:
+                self.co = self._f_code()
+                self.co_name = self.co.pyop_field('co_name')
+                self.co_filename = self.co.pyop_field('co_filename')
+
+                self.f_lasti = self._f_lasti()
+                self.co_nlocals = int_from_int(self.co.field('co_nlocals'))
+                pnames = self.co.field('co_localsplusnames')
+                self.co_localsplusnames = PyTupleObjectPtr.from_pyobject_ptr(pnames)
+                self._is_code = True
+            except:
+                self._is_code = False
 
     def is_optimized_out(self):
         return self._gdbval.is_optimized_out
@@ -1076,16 +1055,19 @@ def _f_builtins(self):
         return self._f_special("f_builtins")
 
     def _f_code(self):
-        return self._f_special("f_code", PyCodeObjectPtr.from_pyobject_ptr)
+        return self._f_special("f_executable", PyCodeObjectPtr.from_pyobject_ptr)
+
+    def _f_executable(self):
+        return self._f_special("f_executable")
 
     def _f_nlocalsplus(self):
         return self._f_special("nlocalsplus", int_from_int)
 
     def _f_lasti(self):
         codeunit_p = gdb.lookup_type("_Py_CODEUNIT").pointer()
-        prev_instr = self._gdbval["prev_instr"]
+        instr_ptr = self._gdbval["instr_ptr"]
         first_instr = self._f_code().field("co_code_adaptive").cast(codeunit_p)
-        return int(prev_instr - first_instr)
+        return int(instr_ptr - first_instr)
 
     def is_shim(self):
         return self._f_special("owner", int) == FRAME_OWNED_BY_CSTACK
@@ -1170,7 +1152,7 @@ def current_line(self):
 
         filename = self.filename()
         try:
-            with open(os_fsencode(filename), 'r', encoding="utf-8") as fp:
+            with open(os.fsencode(filename), 'r', encoding="utf-8") as fp:
                 lines = fp.readlines()
         except IOError:
             return None
@@ -1263,7 +1245,7 @@ def proxyval(self, visited):
             return set(members)
 
     def write_repr(self, out, visited):
-        # Emulate Python 3's set_repr
+        # Emulate Python's set_repr
         tp_name = self.safe_tp_name()
 
         # Guard against infinite loops:
@@ -1272,13 +1254,13 @@ def write_repr(self, out, visited):
             return
         visited.add(self.as_address())
 
-        # Python 3's set_repr special-cases the empty set:
+        # Python's set_repr special-cases the empty set:
         if not self.field('used'):
             out.write(tp_name)
             out.write('()')
             return
 
-        # Python 3 uses {} for set literals:
+        # Python uses {} for set literals:
         if tp_name != 'set':
             out.write(tp_name)
             out.write('(')
@@ -1309,13 +1291,13 @@ def proxyval(self, visited):
         return str(self)
 
     def write_repr(self, out, visited):
-        # Write this out as a Python 3 bytes literal, i.e. with a "b" prefix
+        # Write this out as a Python bytes literal, i.e. with a "b" prefix
 
-        # Get a PyStringObject* within the Python 2 gdb process:
+        # Get a PyStringObject* within the Python gdb process:
         proxy = self.proxyval(visited)
 
-        # Transliteration of Python 3's Objects/bytesobject.c:PyBytes_Repr
-        # to Python 2 code:
+        # Transliteration of Python's Objects/bytesobject.c:PyBytes_Repr
+        # to Python code:
         quote = "'"
         if "'" in proxy and not '"' in proxy:
             quote = '"'
@@ -1380,7 +1362,7 @@ class PyTypeObjectPtr(PyObjectPtr):
 
 
 def _unichr_is_printable(char):
-    # Logic adapted from Python 3's Tools/unicode/makeunicodedata.py
+    # Logic adapted from Python's Tools/unicode/makeunicodedata.py
     if char == u" ":
         return True
     import unicodedata
@@ -1390,10 +1372,6 @@ def _unichr_is_printable(char):
 class PyUnicodeObjectPtr(PyObjectPtr):
     _typename = 'PyUnicodeObject'
 
-    def char_width(self):
-        _type_Py_UNICODE = gdb.lookup_type('Py_UNICODE')
-        return _type_Py_UNICODE.sizeof
-
     def proxyval(self, visited):
         compact = self.field('_base')
         ascii = compact['_base']
@@ -1414,23 +1392,23 @@ def proxyval(self, visited):
         elif repr_kind == 4:
             field_str = field_str.cast(_type_unsigned_int_ptr())
 
-        # Gather a list of ints from the Py_UNICODE array; these are either
+        # Gather a list of ints from the code point array; these are either
         # UCS-1, UCS-2 or UCS-4 code points:
-        Py_UNICODEs = [int(field_str[i]) for i in safe_range(field_length)]
+        code_points = [int(field_str[i]) for i in safe_range(field_length)]
 
         # Convert the int code points to unicode characters, and generate a
         # local unicode instance.
-        result = u''.join(map(chr, Py_UNICODEs))
+        result = ''.join(map(chr, code_points))
         return result
 
     def write_repr(self, out, visited):
-        # Write this out as a Python 3 str literal, i.e. without a "u" prefix
+        # Write this out as a Python str literal
 
-        # Get a PyUnicodeObject* within the Python 2 gdb process:
+        # Get a PyUnicodeObject* within the Python gdb process:
         proxy = self.proxyval(visited)
 
-        # Transliteration of Python 3's Object/unicodeobject.c:unicode_repr
-        # to Python 2:
+        # Transliteration of Python's Object/unicodeobject.c:unicode_repr
+        # to Python:
         if "'" in proxy and '"' not in proxy:
             quote = '"'
         else:
@@ -1481,7 +1459,7 @@ def write_repr(self, out, visited):
                 # (categories Z* and C* except ASCII space)
                 if not printable:
                     if ch2 is not None:
-                        # Match Python 3's representation of non-printable
+                        # Match Python's representation of non-printable
                         # wide characters.
                         code = (ord(ch) & 0x03FF) << 10
                         code |= ord(ch2) & 0x03FF
@@ -1612,8 +1590,8 @@ def pretty_printer_lookup(gdbval):
 if the code is autoloaded by gdb when visiting libpython.so, provided
 that this python file is installed to the same path as the library (or its
 .debug file) plus a "-gdb.py" suffix, e.g:
-  /usr/lib/libpython2.6.so.1.0-gdb.py
-  /usr/lib/debug/usr/lib/libpython2.6.so.1.0.debug-gdb.py
+  /usr/lib/libpython3.12.so.1.0-gdb.py
+  /usr/lib/debug/usr/lib/libpython3.12.so.1.0.debug-gdb.py
 """
 def register (obj):
     if obj is None:
@@ -1932,7 +1910,7 @@ def invoke(self, args, from_tty):
             start = 1
 
         try:
-            f = open(os_fsencode(filename), 'r', encoding="utf-8")
+            f = open(os.fsencode(filename), 'r', encoding="utf-8")
         except IOError as err:
             sys.stdout.write('Unable to open %s: %s\n'
                              % (filename, err))
diff --git a/Tools/importbench/importbench.py b/Tools/importbench/importbench.py
index 619263b553c081..0c4b3bc73517c5 100644
--- a/Tools/importbench/importbench.py
+++ b/Tools/importbench/importbench.py
@@ -15,6 +15,7 @@
 import sys
 import tabnanny
 import timeit
+import types
 
 
 def bench(name, cleanup=lambda: None, *, seconds=1, repeat=3):
@@ -40,7 +41,7 @@ def bench(name, cleanup=lambda: None, *, seconds=1, repeat=3):
 def from_cache(seconds, repeat):
     """sys.modules"""
     name = '<benchmark import>'
-    module = imp.new_module(name)
+    module = types.ModuleType(name)
     module.__file__ = '<test>'
     module.__package__ = ''
     with util.uncache(name):
diff --git a/Tools/lockbench/lockbench.py b/Tools/lockbench/lockbench.py
new file mode 100644
index 00000000000000..9833d703e00cbb
--- /dev/null
+++ b/Tools/lockbench/lockbench.py
@@ -0,0 +1,53 @@
+# Measure the performance of PyMutex and PyThread_type_lock locks
+# with short critical sections.
+#
+# Usage: python Tools/lockbench/lockbench.py [CRITICAL_SECTION_LENGTH]
+#
+# How to interpret the results:
+#
+# Acquisitions (kHz): Reports the total number of lock acquisitions in
+# thousands of acquisitions per second. This is the most important metric,
+# particularly for the 1 thread case because even in multithreaded programs,
+# most locks acquisitions are not contended. Values for 2+ threads are
+# only meaningful for `--disable-gil` builds, because the GIL prevents most
+# situations where there is lock contention with short critical sections.
+#
+# Fairness: A measure of how evenly the lock acquisitions are distributed.
+# A fairness of 1.0 means that all threads acquired the lock the same number
+# of times. A fairness of 1/N means that only one thread ever acquired the
+# lock.
+# See https://en.wikipedia.org/wiki/Fairness_measure#Jain's_fairness_index
+
+from _testinternalcapi import benchmark_locks
+import sys
+
+# Max number of threads to test
+MAX_THREADS = 10
+
+# How much "work" to do while holding the lock
+CRITICAL_SECTION_LENGTH = 1
+
+
+def jains_fairness(values):
+    # Jain's fairness index
+    # See https://en.wikipedia.org/wiki/Fairness_measure
+    return (sum(values) ** 2) / (len(values) * sum(x ** 2 for x in values))
+
+def main():
+    print("Lock Type           Threads           Acquisitions (kHz)   Fairness")
+    for lock_type in ["PyMutex", "PyThread_type_lock"]:
+        use_pymutex = (lock_type == "PyMutex")
+        for num_threads in range(1, MAX_THREADS + 1):
+            acquisitions, thread_iters = benchmark_locks(
+                num_threads, use_pymutex, CRITICAL_SECTION_LENGTH)
+
+            acquisitions /= 1000  # report in kHz for readability
+            fairness = jains_fairness(thread_iters)
+
+            print(f"{lock_type: <20}{num_threads: <18}{acquisitions: >5.0f}{fairness: >20.2f}")
+
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        CRITICAL_SECTION_LENGTH = int(sys.argv[1])
+    main()
diff --git a/Tools/msi/README.txt b/Tools/msi/README.txt
index 8c6ec516f18e9d..c25ada8397cd95 100644
--- a/Tools/msi/README.txt
+++ b/Tools/msi/README.txt
@@ -73,6 +73,13 @@ building on a recent Windows version, use the Control Panel (Programs | Programs
 and Features | Turn Windows Features on or off) and ensure that the entry
 ".NET Framework 3.5 (includes .NET 2.0 and 3.0)" is enabled.
 
+For Python 3.11.x and above, enable "Microsoft .NET Framework 4.8 Advanced Services"
+instead of "Microsoft .NET Framework Version 3.5" available for Windows 10 and above.
+Also make sure "MSVC v143 - VS 2022 C++ ARM64 build tools" are selected under
+"Desktop Development with C++" in "Visual Studio installer" even if you are not
+building on ARM64 along with other x64 related v143 build tools. This is because for
+3.11.x and above we have upgraded to Wix-3.14.
+
 For testing, the installer should be built with the Tools/msi/build.bat
 script:
 
diff --git a/Tools/msi/build.bat b/Tools/msi/build.bat
index 8771d004211ea9..b9aab887c4939b 100644
--- a/Tools/msi/build.bat
+++ b/Tools/msi/build.bat
@@ -29,29 +29,23 @@ call "%D%get_externals.bat"
 call "%PCBUILD%find_msbuild.bat" %MSBUILD%
 if ERRORLEVEL 1 (echo Cannot locate MSBuild.exe on PATH or as MSBUILD variable & exit /b 2)
 
-if defined BUILDX86 (
-    call "%PCBUILD%build.bat" -p Win32 -d -e %REBUILD% %BUILDTEST%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-    call "%PCBUILD%build.bat" -p Win32 -e %REBUILD% %BUILDTEST%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
-if defined BUILDX64 (
-    call "%PCBUILD%build.bat" -p x64 -d -e %REBUILD% %BUILDTEST%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-    call "%PCBUILD%build.bat" -p x64 -e %REBUILD% %BUILDTEST%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
-if defined BUILDARM64 (
-    call "%PCBUILD%build.bat" -p ARM64 -d -e %REBUILD% %BUILDTEST%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-    call "%PCBUILD%build.bat" -p ARM64 -e %REBUILD% %BUILDTEST%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
+if defined BUILDX86 call "%PCBUILD%build.bat" -p Win32 -d -e %REBUILD% %BUILDTEST%
+if errorlevel 1 exit /B %ERRORLEVEL%
+if defined BUILDX86 call "%PCBUILD%build.bat" -p Win32 -e %REBUILD% %BUILDTEST%
+if errorlevel 1 exit /B %ERRORLEVEL%
 
-if defined BUILDDOC (
-    call "%PCBUILD%..\Doc\make.bat" html
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
+if defined BUILDX64 call "%PCBUILD%build.bat" -p x64 -d -e %REBUILD% %BUILDTEST%
+if errorlevel 1 exit /B %ERRORLEVEL%
+if defined BUILDX64 call "%PCBUILD%build.bat" -p x64 -e %REBUILD% %BUILDTEST%
+if errorlevel 1 exit /B %ERRORLEVEL%
+
+if defined BUILDARM64 call "%PCBUILD%build.bat" -p ARM64 -d -e %REBUILD% %BUILDTEST%
+if errorlevel 1 exit /B %ERRORLEVEL%
+if defined BUILDARM64  call "%PCBUILD%build.bat" -p ARM64 -e %REBUILD% %BUILDTEST%
+if errorlevel 1 exit /B %ERRORLEVEL%
+
+if defined BUILDDOC call "%PCBUILD%..\Doc\make.bat" html
+if errorlevel 1 exit /B %ERRORLEVEL%
 
 rem Build the launcher MSI separately
 %MSBUILD% "%D%launcher\launcher.wixproj" /p:Platform=x86
@@ -68,18 +62,14 @@ if defined REBUILD (
     set BUILD_CMD=%BUILD_CMD% /t:Rebuild
 )
 
-if defined BUILDX86 (
-    %MSBUILD% /p:Platform=x86 %BUILD_CMD%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
-if defined BUILDX64 (
-    %MSBUILD% /p:Platform=x64 %BUILD_CMD%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
-if defined BUILDARM64 (
-    %MSBUILD% /p:Platform=ARM64 %BUILD_CMD%
-    if errorlevel 1 exit /B %ERRORLEVEL%
-)
+if defined BUILDX86 %MSBUILD% /p:Platform=x86 %BUILD_CMD%
+if errorlevel 1 exit /B %ERRORLEVEL%
+
+if defined BUILDX64 %MSBUILD% /p:Platform=x64 %BUILD_CMD%
+if errorlevel 1 exit /B %ERRORLEVEL%
+
+if defined BUILDARM64 %MSBUILD% /p:Platform=ARM64 %BUILD_CMD%
+if errorlevel 1 exit /B %ERRORLEVEL%
 
 exit /B 0
 
diff --git a/Tools/msi/bundle/Default.wxl b/Tools/msi/bundle/Default.wxl
index e83a540a0e6726..6f8befba3a2523 100644
--- a/Tools/msi/bundle/Default.wxl
+++ b/Tools/msi/bundle/Default.wxl
@@ -112,10 +112,10 @@ See &lt;a href="https://docs.python.org/[ShortVersion]/whatsnew/[ShortVersion].h
   <String Id="SuccessModifyMessage">Thank you for using [WixBundleName].</String>
   <String Id="SuccessRepairMessage">Thank you for using [WixBundleName].
 
-Feel free to email &lt;a href="mailto:python-list@python.org"&gt;python-list@python.org&lt;/a&gt; if you continue to encounter issues.</String>
+Feel free to post at &lt;a href="https://discuss.python.org/c/users/7"&gt;discuss.python.org&lt;/a&gt; if you continue to encounter issues.</String>
   <String Id="SuccessRemoveMessage">Thank you for using [WixBundleName].
 
-Feel free to email &lt;a href="mailto:python-list@python.org"&gt;python-list@python.org&lt;/a&gt; if you encountered problems.</String>
+Feel free to post at &lt;a href="https://discuss.python.org/c/users/7"&gt;discuss.python.org&lt;/a&gt; if you encountered problems.</String>
   <String Id="FailureHeader">Setup failed</String>
   <String Id="FailureHyperlinkLogText">One or more issues caused the setup to fail. Please fix the issues and then retry setup. For more information see the &lt;a href="#"&gt;log file&lt;/a&gt;.</String>
   <String Id="FailureRestartText">You must restart your computer to complete the rollback of the software.</String>
@@ -123,7 +123,7 @@ Feel free to email &lt;a href="mailto:python-list@python.org"&gt;python-list@pyt
   <String Id="FailureExistingInstall">Unable to install [WixBundleName] due to an existing install. Use Programs and Features to modify, repair or remove [WixBundleName].</String>
   <String Id="FailureOldOS">At least Windows 8.1 or Windows Server 2012 are required to install [WixBundleName]
 
-Visit &lt;a href="https://www.python.org/"&gt;python.org&lt;/a&gt; to download an earlier version of Python.</String>
+Visit &lt;a href="https://www.python.org/downloads/"&gt;python.org&lt;/a&gt; to download an earlier version of Python.</String>
   <String Id="SuccessMaxPathButton">Disable path length limit</String>
   <String Id="SuccessMaxPathButtonNote">Changes your machine configuration to allow programs, including Python, to bypass the 260 character "MAX_PATH" limitation.</String>
 </WixLocalization>
diff --git a/Tools/msi/bundle/packagegroups/postinstall.wxs b/Tools/msi/bundle/packagegroups/postinstall.wxs
index 64f42dd30e8ba0..24c72e6357ab08 100644
--- a/Tools/msi/bundle/packagegroups/postinstall.wxs
+++ b/Tools/msi/bundle/packagegroups/postinstall.wxs
@@ -42,7 +42,7 @@
 
 
             
-            <?define CompileAllCommand=-E -s -Wi "[TargetDir]\Lib\compileall.py" -f -x "bad_coding|badsyntax|site-packages|py2_|lib2to3\\tests|venv\\scripts" "[TargetDir]\Lib"?>
+            <?define CompileAllCommand=-E -s -Wi "[TargetDir]\Lib\compileall.py" -f -x "bad_coding|badsyntax|site-packages|py2_|venv\\scripts" "[TargetDir]\Lib"?>
             <ExePackage Id="compileall_AllUsers"
                         SourceFile="py.exe"
                         Compressed="yes"
diff --git a/Tools/msi/lib/lib_files.wxs b/Tools/msi/lib/lib_files.wxs
index 73c0231352f35c..a82cad596d47a6 100644
--- a/Tools/msi/lib/lib_files.wxs
+++ b/Tools/msi/lib/lib_files.wxs
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
-    <?define exts=pyexpat;select;unicodedata;winsound;_bz2;_elementtree;_socket;_ssl;_msi;_ctypes;_hashlib;_multiprocessing;_lzma;_decimal;_overlapped;_sqlite3;_asyncio;_queue;_uuid;_wmi;_zoneinfo ?>
+    <?define exts=pyexpat;select;unicodedata;winsound;_bz2;_elementtree;_socket;_ssl;_ctypes;_hashlib;_multiprocessing;_lzma;_decimal;_overlapped;_sqlite3;_asyncio;_queue;_uuid;_wmi;_zoneinfo ?>
     <Fragment>
         <DirectoryRef Id="Lib_venv_scripts_nt" />
 
@@ -116,10 +116,6 @@
                     <RegistryValue Key="PythonPath" Type="string" Value="[Lib];[DLLs]" />
                 </RegistryKey>
             </Component>
-            <Component Id="Lib2to3_pickle_remove" Directory="Lib_lib2to3" Guid="$(var.RemoveLib2to3PickleComponentGuid)">
-                <RemoveFile Id="Lib2to3_pickle_remove_files" Name="*.pickle" On="uninstall" />
-                <RemoveFolder Id="Lib2to3_pickle_remove_folder" On="uninstall" />
-            </Component>
         </ComponentGroup>
     </Fragment>
     <Fragment>
diff --git a/Tools/msi/msi.props b/Tools/msi/msi.props
index 06aa0b8bbca277..cfb3ca9e76e24c 100644
--- a/Tools/msi/msi.props
+++ b/Tools/msi/msi.props
@@ -156,9 +156,6 @@
         <_Uuid Include="PythonwExeComponentGuid">
             <Uri>pythonw.exe</Uri>
         </_Uuid>
-        <_Uuid Include="RemoveLib2to3PickleComponentGuid">
-            <Uri>lib2to3/pickles</Uri>
-        </_Uuid>
         <_Uuid Include="CommonPythonRegComponentGuid">
             <Uri>registry</Uri>
         </_Uuid>
@@ -187,4 +184,4 @@
             <DefineConstants>$(DefineConstants);@(_UuidValue,';');</DefineConstants>
         </PropertyGroup>
     </Target>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/Tools/msi/purge.py b/Tools/msi/purge.py
index de9fdc95202af7..e25219a6caf9d4 100644
--- a/Tools/msi/purge.py
+++ b/Tools/msi/purge.py
@@ -10,7 +10,7 @@
 import re
 import sys
 
-from urllib.request import *
+from urllib.request import Request, urlopen
 
 VERSION_RE = re.compile(r'(\d+\.\d+\.\d+)([A-Za-z_]+\d+)?$')
 
diff --git a/Tools/msi/test/test_files.wxs b/Tools/msi/test/test_files.wxs
index b5f68faef30e02..bb9b258692a62f 100644
--- a/Tools/msi/test/test_files.wxs
+++ b/Tools/msi/test/test_files.wxs
@@ -1,41 +1,41 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
-    <?define exts=_testcapi;_ctypes_test;_testbuffer;_testimportmultiple;_testmultiphase;_testsinglephase;_testconsole;_testinternalcapi ?>
+    <?define exts=_testcapi;_ctypes_test;_testbuffer;_testimportmultiple;_testmultiphase;_testsinglephase;_testconsole;_testinternalcapi;_testclinic;_testclinic_limited ?>
     <Fragment>
         <ComponentGroup Id="test_extensions">
             <?foreach ext in $(var.exts)?>
-        
+
             <Component Id="$(var.ext).pyd" Directory="DLLs" Guid="*">
                 <File Name="$(var.ext).pyd" KeyPath="yes" />
             </Component>
-            
+
             <?endforeach ?>
         </ComponentGroup>
     </Fragment>
-    
+
     <Fragment>
         <ComponentGroup Id="test_extensions_symbols">
             <?foreach ext in $(var.exts)?>
-            
+
             <Component Id="$(var.ext).pdb" Directory="DLLs" Guid="*">
                 <File Name="$(var.ext).pdb" />
             </Component>
-            
+
             <?endforeach ?>
         </ComponentGroup>
     </Fragment>
-    
+
     <Fragment>
         <ComponentGroup Id="test_extensions_d">
             <?foreach ext in $(var.exts)?>
-            
+
             <Component Id="$(var.ext)_d.pyd" Directory="DLLs" Guid="*">
                 <File Name="$(var.ext)_d.pyd" />
             </Component>
             <Component Id="$(var.ext)_d.pdb" Directory="DLLs" Guid="*">
                 <File Name="$(var.ext)_d.pdb" />
             </Component>
-            
+
             <?endforeach ?>
         </ComponentGroup>
     </Fragment>
diff --git a/Tools/patchcheck/patchcheck.py b/Tools/patchcheck/patchcheck.py
index fa3a43af6e6048..af1f0584bb5403 100755
--- a/Tools/patchcheck/patchcheck.py
+++ b/Tools/patchcheck/patchcheck.py
@@ -11,6 +11,13 @@
 import untabify
 
 
+def get_python_source_dir():
+    src_dir = sysconfig.get_config_var('abs_srcdir')
+    if not src_dir:
+        src_dir = sysconfig.get_config_var('srcdir')
+    return os.path.abspath(src_dir)
+
+
 # Excluded directories which are copies of external libraries:
 # don't check their coding style
 EXCLUDE_DIRS = [
@@ -18,12 +25,13 @@
     os.path.join('Modules', 'expat'),
     os.path.join('Modules', 'zlib'),
     ]
-SRCDIR = sysconfig.get_config_var('srcdir')
+SRCDIR = get_python_source_dir()
 
 
 def n_files_str(count):
     """Return 'N file(s)' with the proper plurality on 'file'."""
-    return "{} file{}".format(count, "s" if count != 1 else "")
+    s = "s" if count != 1 else ""
+    return f"{count} file{s}"
 
 
 def status(message, modal=False, info=None):
@@ -77,7 +85,7 @@ def get_git_remote_default_branch(remote_name):
 
     It is typically called 'main', but may differ
     """
-    cmd = "git remote show {}".format(remote_name).split()
+    cmd = f"git remote show {remote_name}".split()
     env = os.environ.copy()
     env['LANG'] = 'C'
     try:
@@ -164,9 +172,9 @@ def report_modified_files(file_paths):
     if count == 0:
         return n_files_str(count)
     else:
-        lines = ["{}:".format(n_files_str(count))]
+        lines = [f"{n_files_str(count)}:"]
         for path in file_paths:
-            lines.append("  {}".format(path))
+            lines.append(f"  {path}")
         return "\n".join(lines)
 
 
@@ -205,27 +213,6 @@ def normalize_c_whitespace(file_paths):
     return fixed
 
 
-ws_re = re.compile(br'\s+(\r?\n)$')
-
-@status("Fixing docs whitespace", info=report_modified_files)
-def normalize_docs_whitespace(file_paths):
-    fixed = []
-    for path in file_paths:
-        abspath = os.path.join(SRCDIR, path)
-        try:
-            with open(abspath, 'rb') as f:
-                lines = f.readlines()
-            new_lines = [ws_re.sub(br'\1', line) for line in lines]
-            if new_lines != lines:
-                shutil.copyfile(abspath, abspath + '.bak')
-                with open(abspath, 'wb') as f:
-                    f.writelines(new_lines)
-                fixed.append(path)
-        except Exception as err:
-            print('Cannot fix %s: %s' % (path, err))
-    return fixed
-
-
 @status("Docs modified", modal=True)
 def docs_modified(file_paths):
     """Report if any file in the Doc directory has been changed."""
@@ -244,6 +231,7 @@ def reported_news(file_paths):
     return any(p.startswith(os.path.join('Misc', 'NEWS.d', 'next'))
                for p in file_paths)
 
+
 @status("configure regenerated", modal=True, info=str)
 def regenerated_configure(file_paths):
     """Check if configure has been regenerated."""
@@ -252,6 +240,7 @@ def regenerated_configure(file_paths):
     else:
         return "not needed"
 
+
 @status("pyconfig.h.in regenerated", modal=True, info=str)
 def regenerated_pyconfig_h_in(file_paths):
     """Check if pyconfig.h.in has been regenerated."""
@@ -260,6 +249,7 @@ def regenerated_pyconfig_h_in(file_paths):
     else:
         return "not needed"
 
+
 def ci(pull_request):
     if pull_request == 'false':
         print('Not a pull request; skipping')
@@ -268,19 +258,18 @@ def ci(pull_request):
     file_paths = changed_files(base_branch)
     python_files = [fn for fn in file_paths if fn.endswith('.py')]
     c_files = [fn for fn in file_paths if fn.endswith(('.c', '.h'))]
-    doc_files = [fn for fn in file_paths if fn.startswith('Doc') and
-                 fn.endswith(('.rst', '.inc'))]
     fixed = []
     fixed.extend(normalize_whitespace(python_files))
     fixed.extend(normalize_c_whitespace(c_files))
-    fixed.extend(normalize_docs_whitespace(doc_files))
     if not fixed:
         print('No whitespace issues found')
     else:
-        print(f'Please fix the {len(fixed)} file(s) with whitespace issues')
-        print('(on UNIX you can run `make patchcheck` to make the fixes)')
+        count = len(fixed)
+        print(f'Please fix the {n_files_str(count)} with whitespace issues')
+        print('(on Unix you can run `make patchcheck` to make the fixes)')
         sys.exit(1)
 
+
 def main():
     base_branch = get_base_branch()
     file_paths = changed_files(base_branch)
@@ -293,8 +282,6 @@ def main():
     normalize_whitespace(python_files)
     # C rules enforcement.
     normalize_c_whitespace(c_files)
-    # Doc whitespace enforcement.
-    normalize_docs_whitespace(doc_files)
     # Docs updated.
     docs_modified(doc_files)
     # Misc/ACKS changed.
diff --git a/Tools/patchcheck/untabify.py b/Tools/patchcheck/untabify.py
index 861c83ced90f24..5c9d1208540830 100755
--- a/Tools/patchcheck/untabify.py
+++ b/Tools/patchcheck/untabify.py
@@ -21,8 +21,7 @@ def main():
         if optname == '-t':
             tabsize = int(optvalue)
 
-    for filename in args:
-        process(filename, tabsize)
+    return max(process(filename, tabsize) for filename in args)
 
 
 def process(filename, tabsize, verbose=True):
@@ -32,10 +31,10 @@ def process(filename, tabsize, verbose=True):
             encoding = f.encoding
     except IOError as msg:
         print("%r: I/O error: %s" % (filename, msg))
-        return
+        return 2
     newtext = text.expandtabs(tabsize)
     if newtext == text:
-        return
+        return 0
     backup = filename + "~"
     try:
         os.unlink(backup)
@@ -49,7 +48,8 @@ def process(filename, tabsize, verbose=True):
         f.write(newtext)
     if verbose:
         print(filename)
+    return 1
 
 
 if __name__ == '__main__':
-    main()
+    raise SystemExit(main())
diff --git a/Tools/peg_generator/.gitignore b/Tools/peg_generator/.gitignore
index f25e54195e4c94..04b68be855d8d9 100644
--- a/Tools/peg_generator/.gitignore
+++ b/Tools/peg_generator/.gitignore
@@ -1,4 +1,2 @@
 peg_extension/parse.c
-data/xxl.py
 venv/
-@data
diff --git a/Tools/peg_generator/Makefile b/Tools/peg_generator/Makefile
index 084da154919e3e..7f695defa0ed41 100644
--- a/Tools/peg_generator/Makefile
+++ b/Tools/peg_generator/Makefile
@@ -8,98 +8,40 @@ endif
 VENVDIR ?= ./venv
 VENVPYTHON ?= $(VENVDIR)/bin/python
 CPYTHON ?= ../../Lib
-MYPY ?= mypy
+MYPY ?= ./venv/bin/mypy
+BLACK ?= ./venv/bin/black
 
 GRAMMAR = ../../Grammar/python.gram
 TOKENS = ../../Grammar/Tokens
-TESTFILE = data/cprog.py
-TIMEFILE = data/xxl.py
-TESTDIR = .
-TESTFLAGS = --short
-
-data/xxl.py:
-	$(PYTHON) -m zipfile -e data/xxl.zip data
 
 build: peg_extension/parse.c
 
 peg_extension/parse.c: $(GRAMMAR) $(TOKENS) pegen/*.py peg_extension/peg_extension.c ../../Parser/pegen.c ../../Parser/pegen_errors.c ../../Parser/string_parser.c ../../Parser/action_helpers.c ../../Parser/*.h pegen/grammar_parser.py
-	$(PYTHON) -m pegen -q c $(GRAMMAR) $(TOKENS) -o peg_extension/parse.c --compile-extension
+	$(VENVPYTHON) -m pegen -q c $(GRAMMAR) $(TOKENS) -o peg_extension/parse.c --compile-extension
 
 clean:
 	-rm -f peg_extension/*.o peg_extension/*.so peg_extension/parse.c
-	-rm -f data/xxl.py
 	-rm -rf $(VENVDIR)
 
-dump: peg_extension/parse.c
-	cat -n $(TESTFILE)
-	$(PYTHON) -c "from peg_extension import parse; import ast; t = parse.parse_file('$(TESTFILE)', mode=1); print(ast.dump(t))"
-
 regen-metaparser: pegen/metagrammar.gram pegen/*.py
-	$(PYTHON) -m pegen -q python pegen/metagrammar.gram -o pegen/grammar_parser.py
+	$(VENVPYTHON) -m pegen -q python pegen/metagrammar.gram -o pegen/grammar_parser.py
 
 # Note: These targets really depend on the generated shared object in peg_extension/parse.*.so but
 # this has different names in different systems so we are abusing the implicit dependency on
 # parse.c by the use of --compile-extension.
 
-.PHONY: test
-
 venv:
 	$(PYTHON) -m venv $(VENVDIR)
-	$(VENVPYTHON) -m pip install -U pip setuptools
-	$(VENVPYTHON) -m pip install -r requirements.pip
+	$(VENVPYTHON) -m pip install -U pip setuptools black mypy
 	@echo "The venv has been created in the $(VENVDIR) directory"
 
-test: run
-
-run: peg_extension/parse.c
-	$(PYTHON) -c "from peg_extension import parse; t = parse.parse_file('$(TESTFILE)'); exec(t)"
-
-compile: peg_extension/parse.c
-	$(PYTHON) -c "from peg_extension import parse; t = parse.parse_file('$(TESTFILE)', mode=2)"
-
-parse: peg_extension/parse.c
-	$(PYTHON) -c "from peg_extension import parse; t = parse.parse_file('$(TESTFILE)', mode=1)"
-
-check: peg_extension/parse.c
-	$(PYTHON) -c "from peg_extension import parse; t = parse.parse_file('$(TESTFILE)', mode=0)"
-
-stats: peg_extension/parse.c data/xxl.py
-	$(PYTHON) -c "from peg_extension import parse; t = parse.parse_file('$(TIMEFILE)', mode=0); parse.dump_memo_stats()" >@data
-	$(PYTHON) scripts/joinstats.py @data
-
-time: time_compile
-
-time_compile: venv data/xxl.py
-	$(VENVPYTHON) scripts/benchmark.py --target=xxl compile
-
-time_parse: venv data/xxl.py
-	$(VENVPYTHON) scripts/benchmark.py --target=xxl parse
-
-time_peg_dir: venv
-	$(VENVPYTHON) scripts/test_parse_directory.py \
-		-d $(TESTDIR) \
-		$(TESTFLAGS) \
-		--exclude "*/failset/*" \
-		--exclude "*/failset/**" \
-		--exclude "*/failset/**/*"
-
-time_stdlib: $(CPYTHON) venv
-	$(VENVPYTHON) scripts/test_parse_directory.py \
-		-d $(CPYTHON) \
-		$(TESTFLAGS) \
-		--exclude "*/bad*" \
-		--exclude "*/test/test_lib2to3/data/*"
-
 mypy: regen-metaparser
 	$(MYPY)  # For list of files, see mypy.ini
 
 format-python:
-	black pegen scripts
-
-format: format-python
+	$(BLACK) pegen
 
-find_max_nesting:
-	$(PYTHON) scripts/find_max_nesting.py
+format: venv format-python
 
 tags: TAGS
 
diff --git a/Tools/peg_generator/data/cprog.py b/Tools/peg_generator/data/cprog.py
deleted file mode 100644
index 79a42983dbd236..00000000000000
--- a/Tools/peg_generator/data/cprog.py
+++ /dev/null
@@ -1,11 +0,0 @@
-if 1:
-    print("Hello " + "world")
-    if 0:
-        print("then")
-        print("clause")
-    elif 1:
-        pass
-    elif 1:
-        pass
-    else:
-        print("else-clause")
diff --git a/Tools/peg_generator/data/top-pypi-packages-365-days.json b/Tools/peg_generator/data/top-pypi-packages-365-days.json
deleted file mode 100644
index 63ff08436a6647..00000000000000
--- a/Tools/peg_generator/data/top-pypi-packages-365-days.json
+++ /dev/null
@@ -1,16011 +0,0 @@
-{
-    "last_update": "2020-01-17 15:34:44",
-    "query": {
-        "bytes_billed": 646188105728,
-        "bytes_processed": 646187256701,
-        "cached": false,
-        "estimated_cost": "2.94"
-    },
-    "rows": [
-        {
-            "download_count": 910195765,
-            "project": "urllib3"
-        },
-        {
-            "download_count": 749120890,
-            "project": "six"
-        },
-        {
-            "download_count": 670113460,
-            "project": "botocore"
-        },
-        {
-            "download_count": 629757389,
-            "project": "python-dateutil"
-        },
-        {
-            "download_count": 629606070,
-            "project": "pip"
-        },
-        {
-            "download_count": 626954494,
-            "project": "requests"
-        },
-        {
-            "download_count": 595019137,
-            "project": "s3transfer"
-        },
-        {
-            "download_count": 570148733,
-            "project": "certifi"
-        },
-        {
-            "download_count": 542241710,
-            "project": "idna"
-        },
-        {
-            "download_count": 534393540,
-            "project": "pyyaml"
-        },
-        {
-            "download_count": 531342983,
-            "project": "pyasn1"
-        },
-        {
-            "download_count": 518080177,
-            "project": "docutils"
-        },
-        {
-            "download_count": 516892347,
-            "project": "chardet"
-        },
-        {
-            "download_count": 502956749,
-            "project": "rsa"
-        },
-        {
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-            "project": "jmespath"
-        },
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-            "download_count": 410856025,
-            "project": "setuptools"
-        },
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-            "download_count": 410196551,
-            "project": "pytz"
-        },
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-        },
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-            "project": "pyobjc-framework-searchkit"
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-            "project": "pyobjc-framework-servicemanagement"
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-            "project": "hacs-frontend"
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-            "project": "pyobjc-framework-social"
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-            "download_count": 179803,
-            "project": "pybars3"
-        },
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-            "download_count": 179768,
-            "project": "pyobjc-framework-eventkit"
-        },
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-            "download_count": 179757,
-            "project": "pyobjc-framework-opendirectory"
-        },
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-            "download_count": 179716,
-            "project": "chatterbot"
-        },
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-            "download_count": 179610,
-            "project": "neovim"
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-            "project": "json-logging"
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-            "download_count": 179401,
-            "project": "pytest-splinter"
-        },
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-            "project": "fig"
-        },
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-            "project": "pyte"
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-            "download_count": 178930,
-            "project": "django-cronman"
-        },
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-            "download_count": 178836,
-            "project": "robotframework-pageobjectlibrary"
-        },
-        {
-            "download_count": 178805,
-            "project": "django-tenant-schemas"
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-            "download_count": 178606,
-            "project": "pypcd"
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-            "project": "s3contents"
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-            "project": "pytube"
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-            "project": "srvlookup"
-        },
-        {
-            "download_count": 178249,
-            "project": "django-cache-url"
-        },
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-            "download_count": 178237,
-            "project": "pytest-sanic"
-        },
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-            "download_count": 178164,
-            "project": "pybase62"
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-        },
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-            "download_count": 177343,
-            "project": "pyobjc-framework-intents"
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-            "download_count": 177128,
-            "project": "playsound"
-        },
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-            "download_count": 177060,
-            "project": "django-sql-explorer"
-        },
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-            "download_count": 177040,
-            "project": "pymavlink"
-        },
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-        },
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-        },
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-            "project": "delighted"
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-            "project": "pick"
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-            "project": "pyobjc-framework-gamecontroller"
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-            "project": "pyobjc-framework-findersync"
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-        },
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-            "download_count": 173753,
-            "project": "pyobjc-framework-localauthentication"
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-            "project": "pyobjc-framework-mediaaccessibility"
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-            "project": "vega"
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-            "project": "textstat"
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-            "project": "neomodel"
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-            "project": "pyobjc"
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-            "project": "check-puppet-agent"
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-            "project": "tensorflow-graphics"
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-            "project": "asyncio-nats-streaming"
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-            "project": "awsretry"
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-            "project": "flup"
-        },
-        {
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-            "project": "tornado-aws"
-        },
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-            "project": "rackspace-novaclient"
-        },
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-            "project": "django-q"
-        },
-        {
-            "download_count": 171593,
-            "project": "rax-default-network-flags-python-novaclient-ext"
-        },
-        {
-            "download_count": 171548,
-            "project": "object-pool"
-        },
-        {
-            "download_count": 171504,
-            "project": "xstatic-font-awesome"
-        },
-        {
-            "download_count": 171492,
-            "project": "rackspace-auth-openstack"
-        },
-        {
-            "download_count": 171339,
-            "project": "qdarkstyle"
-        },
-        {
-            "download_count": 171275,
-            "project": "tox-monorepo"
-        }
-    ]
-}
diff --git a/Tools/peg_generator/data/xxl.zip b/Tools/peg_generator/data/xxl.zip
deleted file mode 100644
index 5421408809b0d0..00000000000000
Binary files a/Tools/peg_generator/data/xxl.zip and /dev/null differ
diff --git a/Tools/peg_generator/mypy.ini b/Tools/peg_generator/mypy.ini
index 17323722c85ad0..f38f21bed004b2 100644
--- a/Tools/peg_generator/mypy.ini
+++ b/Tools/peg_generator/mypy.ini
@@ -1,26 +1,23 @@
 [mypy]
-files = pegen
-
-follow_imports = error
-no_implicit_optional = True
-strict_optional = True
-
-#check_untyped_defs = True
-disallow_untyped_calls = True
-disallow_untyped_defs = True
+files = Tools/peg_generator/pegen
+pretty = True
+show_traceback = True
 
-disallow_any_generics = true
-disallow_any_unimported = True
-disallow_incomplete_defs = True
-disallow_subclassing_any = True
+# Make sure the peg_generator can be run using Python 3.10:
+python_version = 3.10
 
-warn_unused_configs = True
-warn_unused_ignores = true
-warn_redundant_casts = true
-warn_no_return = True
+# Be strict...
+strict = True
+warn_unreachable = True
+enable_error_code = truthy-bool,ignore-without-code,redundant-expr
 
-show_traceback = True
-show_error_codes = True
+# This causes *many* false positives on the peg_generator
+# due to pegen.grammar.GrammarVisitor returning Any from visit() and generic_visit().
+# It would be possible to workaround the false positives using asserts,
+# but it would be pretty tedious, and probably isn't worth it.
+warn_return_any = False
 
-[mypy-pegen.grammar_parser]
-strict_optional = False
+# Not all of the strictest settings can be enabled
+# on generated Python code yet:
+[mypy-pegen.grammar_parser.*]
+disable_error_code = redundant-expr
diff --git a/Tools/peg_generator/peg_extension/peg_extension.c b/Tools/peg_generator/peg_extension/peg_extension.c
index 7df134b5ade8bb..b081240ffff017 100644
--- a/Tools/peg_generator/peg_extension/peg_extension.c
+++ b/Tools/peg_generator/peg_extension/peg_extension.c
@@ -52,7 +52,7 @@ parse_file(PyObject *self, PyObject *args, PyObject *kwds)
     PyCompilerFlags flags = _PyCompilerFlags_INIT;
     mod_ty res = _PyPegen_run_parser_from_file_pointer(
                         fp, Py_file_input, filename_ob,
-                        NULL, NULL, NULL, &flags, NULL, arena);
+                        NULL, NULL, NULL, &flags, NULL, NULL, arena);
     fclose(fp);
     if (res == NULL) {
         goto error;
diff --git a/Tools/peg_generator/pegen/__main__.py b/Tools/peg_generator/pegen/__main__.py
index 2910d6ccf1c694..262c8a6db68f6e 100755
--- a/Tools/peg_generator/pegen/__main__.py
+++ b/Tools/peg_generator/pegen/__main__.py
@@ -12,7 +12,10 @@
 import traceback
 from typing import Tuple
 
-from pegen.build import Grammar, Parser, ParserGenerator, Tokenizer
+from pegen.grammar import Grammar
+from pegen.parser import Parser
+from pegen.parser_generator import ParserGenerator
+from pegen.tokenizer import Tokenizer
 from pegen.validator import validate_grammar
 
 
diff --git a/Tools/peg_generator/pegen/ast_dump.py b/Tools/peg_generator/pegen/ast_dump.py
index 2c57d0932fda37..07f8799c114f5d 100644
--- a/Tools/peg_generator/pegen/ast_dump.py
+++ b/Tools/peg_generator/pegen/ast_dump.py
@@ -66,6 +66,4 @@ def _format(node: Any, level: int = 0) -> Tuple[str, bool]:
 
     if all(cls.__name__ != "AST" for cls in node.__class__.__mro__):
         raise TypeError("expected AST, got %r" % node.__class__.__name__)
-    if indent is not None and not isinstance(indent, str):
-        indent = " " * indent
     return _format(node)[0]
diff --git a/Tools/peg_generator/pegen/build.py b/Tools/peg_generator/pegen/build.py
index 5805ff63717440..30bfb31471c7b2 100644
--- a/Tools/peg_generator/pegen/build.py
+++ b/Tools/peg_generator/pegen/build.py
@@ -1,10 +1,12 @@
 import itertools
+import logging
+import os
 import pathlib
 import sys
 import sysconfig
 import tempfile
 import tokenize
-from typing import IO, Dict, List, Optional, Set, Tuple
+from typing import IO, Any, Dict, List, Optional, Set, Tuple
 
 from pegen.c_generator import CParserGenerator
 from pegen.grammar import Grammar
@@ -17,6 +19,7 @@
 MOD_DIR = pathlib.Path(__file__).resolve().parent
 
 TokenDefinitions = Tuple[Dict[int, str], Dict[str, int], Set[str]]
+Incomplete = Any  # TODO: install `types-setuptools` and remove this alias
 
 
 def get_extra_flags(compiler_flags: str, compiler_py_flags_nodist: str) -> List[str]:
@@ -27,6 +30,45 @@ def get_extra_flags(compiler_flags: str, compiler_py_flags_nodist: str) -> List[
     return f"{flags} {py_flags_nodist}".split()
 
 
+def fixup_build_ext(cmd: Incomplete) -> None:
+    """Function needed to make build_ext tests pass.
+
+    When Python was built with --enable-shared on Unix, -L. is not enough to
+    find libpython<blah>.so, because regrtest runs in a tempdir, not in the
+    source directory where the .so lives.
+
+    When Python was built with in debug mode on Windows, build_ext commands
+    need their debug attribute set, and it is not done automatically for
+    some reason.
+
+    This function handles both of these things.  Example use:
+
+        cmd = build_ext(dist)
+        support.fixup_build_ext(cmd)
+        cmd.ensure_finalized()
+
+    Unlike most other Unix platforms, Mac OS X embeds absolute paths
+    to shared libraries into executables, so the fixup is not needed there.
+
+    Taken from distutils (was part of the CPython stdlib until Python 3.11)
+    """
+    if os.name == "nt":
+        cmd.debug = sys.executable.endswith("_d.exe")
+    elif sysconfig.get_config_var("Py_ENABLE_SHARED"):
+        # To further add to the shared builds fun on Unix, we can't just add
+        # library_dirs to the Extension() instance because that doesn't get
+        # plumbed through to the final compiler command.
+        runshared = sysconfig.get_config_var("RUNSHARED")
+        if runshared is None:
+            cmd.library_dirs = ["."]
+        else:
+            if sys.platform == "darwin":
+                cmd.library_dirs = []
+            else:
+                name, equals, value = runshared.partition("=")
+                cmd.library_dirs = [d for d in value.split(os.pathsep) if d]
+
+
 def compile_c_extension(
     generated_source_path: str,
     build_dir: Optional[str] = None,
@@ -34,7 +76,7 @@ def compile_c_extension(
     keep_asserts: bool = True,
     disable_optimization: bool = False,
     library_dir: Optional[str] = None,
-) -> str:
+) -> pathlib.Path:
     """Compile the generated source for a parser generator into an extension module.
 
     The extension module will be generated in the same directory as the provided path
@@ -49,16 +91,16 @@ def compile_c_extension(
     static library of the common parser sources (this is useful in case you are
     creating multiple extensions).
     """
-    import distutils.log
-    from distutils.core import Distribution, Extension
-    from distutils.tests.support import fixup_build_ext  # type: ignore
+    import setuptools.command.build_ext
+    import setuptools.logging
 
-    from distutils.ccompiler import new_compiler
-    from distutils.dep_util import newer_group
-    from distutils.sysconfig import customize_compiler
+    from setuptools import Extension, Distribution
+    from setuptools._distutils.dep_util import newer_group
+    from setuptools._distutils.ccompiler import new_compiler
+    from setuptools._distutils.sysconfig import customize_compiler
 
     if verbose:
-        distutils.log.set_threshold(distutils.log.DEBUG)
+        setuptools.logging.set_threshold(logging.DEBUG)
 
     source_file_path = pathlib.Path(generated_source_path)
     extension_name = source_file_path.stem
@@ -70,7 +112,7 @@ def compile_c_extension(
     if keep_asserts:
         extra_compile_args.append("-UNDEBUG")
     if disable_optimization:
-        if sys.platform == 'win32':
+        if sys.platform == "win32":
             extra_compile_args.append("/Od")
             extra_link_args.append("/LTCG:OFF")
         else:
@@ -81,7 +123,14 @@ def compile_c_extension(
     common_sources = [
         str(MOD_DIR.parent.parent.parent / "Python" / "Python-ast.c"),
         str(MOD_DIR.parent.parent.parent / "Python" / "asdl.c"),
-        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "lexer" / "lexer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "lexer" / "state.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "lexer" / "buffer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer" / "string_tokenizer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer" / "file_tokenizer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer" / "utf8_tokenizer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer" / "readline_tokenizer.c"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer" / "helpers.c"),
         str(MOD_DIR.parent.parent.parent / "Parser" / "pegen.c"),
         str(MOD_DIR.parent.parent.parent / "Parser" / "pegen_errors.c"),
         str(MOD_DIR.parent.parent.parent / "Parser" / "action_helpers.c"),
@@ -91,6 +140,8 @@ def compile_c_extension(
     include_dirs = [
         str(MOD_DIR.parent.parent.parent / "Include" / "internal"),
         str(MOD_DIR.parent.parent.parent / "Parser"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "lexer"),
+        str(MOD_DIR.parent.parent.parent / "Parser" / "tokenizer"),
     ]
     extension = Extension(
         extension_name,
@@ -100,6 +151,7 @@ def compile_c_extension(
     )
     dist = Distribution({"name": extension_name, "ext_modules": [extension]})
     cmd = dist.get_command_obj("build_ext")
+    assert isinstance(cmd, setuptools.command.build_ext.build_ext)
     fixup_build_ext(cmd)
     cmd.build_lib = str(source_file_path.parent)
     cmd.include_dirs = include_dirs
@@ -113,54 +165,66 @@ def compile_c_extension(
     compiler.set_library_dirs(cmd.library_dirs)
     # build static lib
     if library_dir:
-        library_filename = compiler.library_filename(extension_name,
-                                                     output_dir=library_dir)
-        if newer_group(common_sources, library_filename, 'newer'):
-            if sys.platform == 'win32':
-                pdb = compiler.static_lib_format % (extension_name, '.pdb')
+        library_filename = compiler.library_filename(extension_name, output_dir=library_dir)
+        if newer_group(common_sources, library_filename, "newer"):
+            if sys.platform == "win32":
+                assert compiler.static_lib_format
+                pdb = compiler.static_lib_format % (extension_name, ".pdb")
                 compile_opts = [f"/Fd{library_dir}\\{pdb}"]
                 compile_opts.extend(extra_compile_args)
             else:
                 compile_opts = extra_compile_args
-            objects = compiler.compile(common_sources,
-                                       output_dir=library_dir,
-                                       debug=cmd.debug,
-                                       extra_postargs=compile_opts)
-            compiler.create_static_lib(objects, extension_name,
-                                       output_dir=library_dir,
-                                       debug=cmd.debug)
-        if sys.platform == 'win32':
+            objects = compiler.compile(
+                common_sources,
+                output_dir=library_dir,
+                debug=cmd.debug,
+                extra_postargs=compile_opts,
+            )
+            compiler.create_static_lib(
+                objects, extension_name, output_dir=library_dir, debug=cmd.debug
+            )
+        if sys.platform == "win32":
             compiler.add_library_dir(library_dir)
             extension.libraries = [extension_name]
-        elif sys.platform == 'darwin':
-            compiler.set_link_objects([
-                '-Wl,-force_load', library_filename,
-            ])
+        elif sys.platform == "darwin":
+            compiler.set_link_objects(
+                [
+                    "-Wl,-force_load",
+                    library_filename,
+                ]
+            )
         else:
-            compiler.set_link_objects([
-                '-Wl,--whole-archive', library_filename, '-Wl,--no-whole-archive',
-            ])
+            compiler.set_link_objects(
+                [
+                    "-Wl,--whole-archive",
+                    library_filename,
+                    "-Wl,--no-whole-archive",
+                ]
+            )
     else:
         extension.sources[0:0] = common_sources
 
     # Compile the source code to object files.
     ext_path = cmd.get_ext_fullpath(extension_name)
-    if newer_group(extension.sources, ext_path, 'newer'):
-        objects = compiler.compile(extension.sources,
-                                    output_dir=cmd.build_temp,
-                                    debug=cmd.debug,
-                                    extra_postargs=extra_compile_args)
+    if newer_group(extension.sources, ext_path, "newer"):
+        objects = compiler.compile(
+            extension.sources,
+            output_dir=cmd.build_temp,
+            debug=cmd.debug,
+            extra_postargs=extra_compile_args,
+        )
     else:
-        objects = compiler.object_filenames(extension.sources,
-                                            output_dir=cmd.build_temp)
+        objects = compiler.object_filenames(extension.sources, output_dir=cmd.build_temp)
     # Now link the object files together into a "shared object"
     compiler.link_shared_object(
-        objects, ext_path,
+        objects,
+        ext_path,
         libraries=cmd.get_libraries(extension),
         extra_postargs=extra_link_args,
-        export_symbols=cmd.get_export_symbols(extension),
+        export_symbols=cmd.get_export_symbols(extension),  # type: ignore[no-untyped-call]
         debug=cmd.debug,
-        build_temp=cmd.build_temp)
+        build_temp=cmd.build_temp,
+    )
 
     return pathlib.Path(ext_path)
 
diff --git a/Tools/peg_generator/pegen/c_generator.py b/Tools/peg_generator/pegen/c_generator.py
index f57b6275f671d3..7cdd5debe9a225 100644
--- a/Tools/peg_generator/pegen/c_generator.py
+++ b/Tools/peg_generator/pegen/c_generator.py
@@ -38,7 +38,11 @@
 #endif
 
 #ifdef __wasi__
-#  define MAXSTACK 4000
+#  ifdef Py_DEBUG
+#    define MAXSTACK 1000
+#  else
+#    define MAXSTACK 4000
+#  endif
 #else
 #  define MAXSTACK 6000
 #endif
@@ -375,8 +379,7 @@ def __init__(
     def add_level(self) -> None:
         self.print("if (p->level++ == MAXSTACK) {")
         with self.indent():
-            self.print("p->error_indicator = 1;")
-            self.print("PyErr_NoMemory();")
+            self.print("_Pypegen_stack_overflow(p);")
         self.print("}")
 
     def remove_level(self) -> None:
diff --git a/Tools/peg_generator/pegen/grammar.py b/Tools/peg_generator/pegen/grammar.py
index 03d60d01026f85..1ee9d100b61f49 100644
--- a/Tools/peg_generator/pegen/grammar.py
+++ b/Tools/peg_generator/pegen/grammar.py
@@ -35,7 +35,13 @@ def generic_visit(self, node: Iterable[Any], *args: Any, **kwargs: Any) -> Any:
 
 class Grammar:
     def __init__(self, rules: Iterable[Rule], metas: Iterable[Tuple[str, Optional[str]]]):
-        self.rules = {rule.name: rule for rule in rules}
+        # Check if there are repeated rules in "rules"
+        all_rules = {}
+        for rule in rules:
+            if rule.name in all_rules:
+                raise GrammarError(f"Repeated rule {rule.name!r}")
+            all_rules[rule.name] = rule
+        self.rules = all_rules
         self.metas = dict(metas)
 
     def __str__(self) -> str:
@@ -112,8 +118,7 @@ def __str__(self) -> str:
         return self.value
 
     def __iter__(self) -> Iterable[str]:
-        if False:
-            yield
+        yield from ()
 
 
 class NameLeaf(Leaf):
@@ -335,8 +340,7 @@ def __str__(self) -> str:
         return f"~"
 
     def __iter__(self) -> Iterator[Tuple[str, str]]:
-        if False:
-            yield
+        yield from ()
 
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, Cut):
@@ -349,7 +353,7 @@ def initial_names(self) -> AbstractSet[str]:
 
 Plain = Union[Leaf, Group]
 Item = Union[Plain, Opt, Repeat, Forced, Lookahead, Rhs, Cut]
-RuleName = Tuple[str, str]
+RuleName = Tuple[str, Optional[str]]
 MetaTuple = Tuple[str, Optional[str]]
 MetaList = List[MetaTuple]
 RuleList = List[Rule]
diff --git a/Tools/peg_generator/pegen/grammar_visualizer.py b/Tools/peg_generator/pegen/grammar_visualizer.py
index ab5c6364f63908..11f784f45b66b8 100644
--- a/Tools/peg_generator/pegen/grammar_visualizer.py
+++ b/Tools/peg_generator/pegen/grammar_visualizer.py
@@ -29,7 +29,6 @@ def print_grammar_ast(self, grammar: Grammar, printer: Callable[..., None] = pri
             printer(self.print_nodes_recursively(rule))
 
     def print_nodes_recursively(self, node: Rule, prefix: str = "", istail: bool = True) -> str:
-
         children = list(self.children(node))
         value = self.name(node)
 
diff --git a/Tools/peg_generator/pegen/keywordgen.py b/Tools/peg_generator/pegen/keywordgen.py
index 35a5e1a229cdec..82d717b72976e5 100644
--- a/Tools/peg_generator/pegen/keywordgen.py
+++ b/Tools/peg_generator/pegen/keywordgen.py
@@ -35,8 +35,6 @@
 issoftkeyword = frozenset(softkwlist).__contains__
 '''.lstrip()
 
-EXTRA_KEYWORDS = ["async", "await"]
-
 
 def main() -> None:
     parser = argparse.ArgumentParser(
@@ -62,7 +60,7 @@ def main() -> None:
     gen.collect_rules()
 
     with args.keyword_file as thefile:
-        all_keywords = sorted(list(gen.keywords.keys()) + EXTRA_KEYWORDS)
+        all_keywords = sorted(list(gen.keywords.keys()))
         all_soft_keywords = sorted(gen.soft_keywords)
 
         keywords = "" if not all_keywords else "    " + ",\n    ".join(map(repr, all_keywords))
diff --git a/Tools/peg_generator/pegen/parser.py b/Tools/peg_generator/pegen/parser.py
index 034e8e6017a22d..ed0aec9db2443f 100644
--- a/Tools/peg_generator/pegen/parser.py
+++ b/Tools/peg_generator/pegen/parser.py
@@ -10,7 +10,6 @@
 from pegen.tokenizer import Mark, Tokenizer, exact_token_types
 
 T = TypeVar("T")
-P = TypeVar("P", bound="Parser")
 F = TypeVar("F", bound=Callable[..., Any])
 
 
@@ -21,7 +20,7 @@ def logger(method: F) -> F:
     """
     method_name = method.__name__
 
-    def logger_wrapper(self: P, *args: object) -> T:
+    def logger_wrapper(self: "Parser", *args: object) -> Any:
         if not self._verbose:
             return method(self, *args)
         argsr = ",".join(repr(arg) for arg in args)
@@ -33,7 +32,7 @@ def logger_wrapper(self: P, *args: object) -> T:
         print(f"{fill}... {method_name}({argsr}) --> {tree!s:.200}")
         return tree
 
-    logger_wrapper.__wrapped__ = method  # type: ignore
+    logger_wrapper.__wrapped__ = method  # type: ignore[attr-defined]
     return cast(F, logger_wrapper)
 
 
@@ -41,7 +40,7 @@ def memoize(method: F) -> F:
     """Memoize a symbol method."""
     method_name = method.__name__
 
-    def memoize_wrapper(self: P, *args: object) -> T:
+    def memoize_wrapper(self: "Parser", *args: object) -> Any:
         mark = self._mark()
         key = mark, method_name, args
         # Fast path: cache hit, and not verbose.
@@ -70,15 +69,17 @@ def memoize_wrapper(self: P, *args: object) -> T:
             self._reset(endmark)
         return tree
 
-    memoize_wrapper.__wrapped__ = method  # type: ignore
+    memoize_wrapper.__wrapped__ = method  # type: ignore[attr-defined]
     return cast(F, memoize_wrapper)
 
 
-def memoize_left_rec(method: Callable[[P], Optional[T]]) -> Callable[[P], Optional[T]]:
+def memoize_left_rec(
+    method: Callable[["Parser"], Optional[T]]
+) -> Callable[["Parser"], Optional[T]]:
     """Memoize a left-recursive symbol method."""
     method_name = method.__name__
 
-    def memoize_left_rec_wrapper(self: P) -> Optional[T]:
+    def memoize_left_rec_wrapper(self: "Parser") -> Optional[T]:
         mark = self._mark()
         key = mark, method_name, ()
         # Fast path: cache hit, and not verbose.
@@ -152,7 +153,7 @@ def memoize_left_rec_wrapper(self: P) -> Optional[T]:
                 self._reset(endmark)
         return tree
 
-    memoize_left_rec_wrapper.__wrapped__ = method  # type: ignore
+    memoize_left_rec_wrapper.__wrapped__ = method  # type: ignore[attr-defined]
     return memoize_left_rec_wrapper
 
 
diff --git a/Tools/peg_generator/pegen/parser_generator.py b/Tools/peg_generator/pegen/parser_generator.py
index f2105d8faa273a..ad28f6c27dcb37 100644
--- a/Tools/peg_generator/pegen/parser_generator.py
+++ b/Tools/peg_generator/pegen/parser_generator.py
@@ -87,7 +87,6 @@ def visit_NamedItem(self, node: NamedItem) -> None:
 
 
 class ParserGenerator:
-
     callmakervisitor: GrammarVisitor
 
     def __init__(self, grammar: Grammar, tokens: Set[str], file: Optional[IO[Text]]):
diff --git a/Tools/peg_generator/pegen/python_generator.py b/Tools/peg_generator/pegen/python_generator.py
index 5329d0ebe5e64c..4a2883eb4ee202 100644
--- a/Tools/peg_generator/pegen/python_generator.py
+++ b/Tools/peg_generator/pegen/python_generator.py
@@ -102,7 +102,7 @@ def visit_NameLeaf(self, node: NameLeaf) -> Tuple[Optional[str], str]:
         if name in ("NAME", "NUMBER", "STRING", "OP", "TYPE_COMMENT"):
             name = name.lower()
             return name, f"self.{name}()"
-        if name in ("NEWLINE", "DEDENT", "INDENT", "ENDMARKER", "ASYNC", "AWAIT"):
+        if name in ("NEWLINE", "DEDENT", "INDENT", "ENDMARKER"):
             # Avoid using names that can be Python keywords
             return "_" + name.lower(), f"self.expect({name!r})"
         return name, f"self.{name}()"
diff --git a/Tools/peg_generator/pegen/testutil.py b/Tools/peg_generator/pegen/testutil.py
index 473d208a786717..0e85b844ef152b 100644
--- a/Tools/peg_generator/pegen/testutil.py
+++ b/Tools/peg_generator/pegen/testutil.py
@@ -37,7 +37,7 @@ def generate_parser(grammar: Grammar) -> Type[Parser]:
 
 def run_parser(file: IO[bytes], parser_class: Type[Parser], *, verbose: bool = False) -> Any:
     # Run a parser on a file (stream).
-    tokenizer = Tokenizer(tokenize.generate_tokens(file.readline))  # type: ignore # typeshed issue #3515
+    tokenizer = Tokenizer(tokenize.generate_tokens(file.readline))  # type: ignore[arg-type] # typeshed issue #3515
     parser = parser_class(tokenizer, verbose=verbose)
     result = parser.start()
     if result is None:
@@ -52,7 +52,7 @@ def parse_string(
     if dedent:
         source = textwrap.dedent(source)
     file = io.StringIO(source)
-    return run_parser(file, parser_class, verbose=verbose)  # type: ignore # typeshed issue #3515
+    return run_parser(file, parser_class, verbose=verbose)  # type: ignore[arg-type] # typeshed issue #3515
 
 
 def make_parser(source: str) -> Type[Parser]:
@@ -83,7 +83,9 @@ def generate_c_parser_source(grammar: Grammar) -> str:
 
 
 def generate_parser_c_extension(
-    grammar: Grammar, path: pathlib.PurePath, debug: bool = False,
+    grammar: Grammar,
+    path: pathlib.PurePath,
+    debug: bool = False,
     library_dir: Optional[str] = None,
 ) -> Any:
     """Generate a parser c extension for the given grammar in the given path
@@ -112,9 +114,9 @@ def generate_parser_c_extension(
 
 
 def print_memstats() -> bool:
-    MiB: Final = 2 ** 20
+    MiB: Final = 2**20
     try:
-        import psutil  # type: ignore
+        import psutil
     except ImportError:
         return False
     print("Memory stats:")
diff --git a/Tools/peg_generator/pyproject.toml b/Tools/peg_generator/pyproject.toml
index f69c5b5e82faf3..b8ac44add13dfb 100644
--- a/Tools/peg_generator/pyproject.toml
+++ b/Tools/peg_generator/pyproject.toml
@@ -1,9 +1,8 @@
 [tool.black]
 line-length = 99
-target_version = ['py38']
+target_version = ['py311']
 exclude = '''
 (
           /pegen/grammar_parser.py   # generated file
-        | /test/test_data/           # test files
 )
 '''
diff --git a/Tools/peg_generator/requirements.pip b/Tools/peg_generator/requirements.pip
deleted file mode 100644
index 190b3488f7bc12..00000000000000
--- a/Tools/peg_generator/requirements.pip
+++ /dev/null
@@ -1,2 +0,0 @@
-memory-profiler==0.57.0
-psutil==5.7.0
diff --git a/Tools/peg_generator/scripts/__init__.py b/Tools/peg_generator/scripts/__init__.py
deleted file mode 100644
index 1e423f483844b1..00000000000000
--- a/Tools/peg_generator/scripts/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-# This exists to let mypy find modules here
diff --git a/Tools/peg_generator/scripts/ast_timings.py b/Tools/peg_generator/scripts/ast_timings.py
deleted file mode 100644
index ca252208f283ed..00000000000000
--- a/Tools/peg_generator/scripts/ast_timings.py
+++ /dev/null
@@ -1,26 +0,0 @@
-import ast
-import sys
-import time
-
-from pegen.testutil import print_memstats
-
-
-def main() -> None:
-    t0 = time.time()
-    for filename in sys.argv[1:]:
-        print(filename, end="\r")
-        try:
-            with open(filename) as file:
-                source = file.read()
-            tree = ast.parse(source, filename)
-        except Exception as err:
-            print(f"{filename}: {err.__class__.__name__}: {err}", file=sys.stderr)
-    tok = None
-    t1 = time.time()
-    dt = t1 - t0
-    print(f"Parsed in {dt:.3f} secs", file=sys.stderr)
-    print_memstats()
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/benchmark.py b/Tools/peg_generator/scripts/benchmark.py
deleted file mode 100644
index 053f8ef06d42c5..00000000000000
--- a/Tools/peg_generator/scripts/benchmark.py
+++ /dev/null
@@ -1,105 +0,0 @@
-#!/usr/bin/env python3
-
-import argparse
-import ast
-import sys
-import os
-from time import time
-
-try:
-    import memory_profiler
-except ModuleNotFoundError:
-    print(
-        "Please run `make venv` to create a virtual environment and install"
-        " all the dependencies, before running this script."
-    )
-    sys.exit(1)
-
-sys.path.insert(0, os.getcwd())
-from scripts.test_parse_directory import parse_directory
-
-argparser = argparse.ArgumentParser(
-    prog="benchmark", description="Reproduce the various pegen benchmarks"
-)
-argparser.add_argument(
-    "--target",
-    action="store",
-    choices=["xxl", "stdlib"],
-    default="xxl",
-    help="Which target to use for the benchmark (default is xxl.py)",
-)
-
-subcommands = argparser.add_subparsers(title="Benchmarks", dest="subcommand")
-command_compile = subcommands.add_parser(
-    "compile", help="Benchmark parsing and compiling to bytecode"
-)
-command_parse = subcommands.add_parser("parse", help="Benchmark parsing and generating an ast.AST")
-
-
-def benchmark(func):
-    def wrapper(*args):
-        times = list()
-        for _ in range(3):
-            start = time()
-            result = func(*args)
-            end = time()
-            times.append(end - start)
-        memory = memory_profiler.memory_usage((func, args))
-        print(f"{func.__name__}")
-        print(f"\tTime: {sum(times)/3:.3f} seconds on an average of 3 runs")
-        print(f"\tMemory: {max(memory)} MiB on an average of 3 runs")
-        return result
-
-    return wrapper
-
-
-@benchmark
-def time_compile(source):
-    return compile(source, "<string>", "exec")
-
-
-@benchmark
-def time_parse(source):
-    return ast.parse(source)
-
-
-def run_benchmark_xxl(subcommand, source):
-    if subcommand == "compile":
-        time_compile(source)
-    elif subcommand == "parse":
-        time_parse(source)
-
-
-def run_benchmark_stdlib(subcommand):
-    modes = {"compile": 2, "parse": 1}
-    for _ in range(3):
-        parse_directory(
-            "../../Lib",
-            verbose=False,
-            excluded_files=[
-                "*/bad*",
-                "*/test/test_lib2to3/data/*",
-            ],
-            short=True,
-            mode=modes[subcommand],
-        )
-
-
-def main():
-    args = argparser.parse_args()
-    subcommand = args.subcommand
-    target = args.target
-
-    if subcommand is None:
-        argparser.error("A benchmark to run is required")
-
-    if target == "xxl":
-        with open(os.path.join("data", "xxl.py"), "r") as f:
-            source = f.read()
-            run_benchmark_xxl(subcommand, source)
-    elif target == "stdlib":
-        run_benchmark_stdlib(subcommand)
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/download_pypi_packages.py b/Tools/peg_generator/scripts/download_pypi_packages.py
deleted file mode 100755
index 180309d0bce628..00000000000000
--- a/Tools/peg_generator/scripts/download_pypi_packages.py
+++ /dev/null
@@ -1,87 +0,0 @@
-#!/usr/bin/env python3.8
-
-import argparse
-import os
-import json
-
-from typing import Dict, Any
-from urllib.request import urlretrieve
-
-argparser = argparse.ArgumentParser(
-    prog="download_pypi_packages",
-    description="Helper program to download PyPI packages",
-)
-argparser.add_argument(
-    "-n", "--number", type=int, default=100, help="Number of packages to download"
-)
-argparser.add_argument(
-    "-a", "--all", action="store_true", help="Download all packages listed in the json file"
-)
-
-
-def load_json(filename: str) -> Dict[Any, Any]:
-    with open(os.path.join("data", f"{filename}.json"), "r") as f:
-        j = json.loads(f.read())
-    return j
-
-
-def remove_json(filename: str) -> None:
-    path = os.path.join("data", f"{filename}.json")
-    os.remove(path)
-
-
-def download_package_json(package_name: str) -> None:
-    url = f"https://pypi.org/pypi/{package_name}/json"
-    urlretrieve(url, os.path.join("data", f"{package_name}.json"))
-
-
-def download_package_code(name: str, package_json: Dict[Any, Any]) -> None:
-    source_index = -1
-    for idx, url_info in enumerate(package_json["urls"]):
-        if url_info["python_version"] == "source":
-            source_index = idx
-            break
-    filename = package_json["urls"][source_index]["filename"]
-    url = package_json["urls"][source_index]["url"]
-    urlretrieve(url, os.path.join("data", "pypi", filename))
-
-
-def main() -> None:
-    args = argparser.parse_args()
-    number_packages = args.number
-    all_packages = args.all
-
-    top_pypi_packages = load_json("top-pypi-packages-365-days")
-    if all_packages:
-        top_pypi_packages = top_pypi_packages["rows"]
-    elif number_packages >= 0 and number_packages <= 4000:
-        top_pypi_packages = top_pypi_packages["rows"][:number_packages]
-    else:
-        raise AssertionError("Unknown value for NUMBER_OF_PACKAGES")
-
-    try:
-        os.mkdir(os.path.join("data", "pypi"))
-    except FileExistsError:
-        pass
-
-    for package in top_pypi_packages:
-        package_name = package["project"]
-
-        print(f"Downloading JSON Data for {package_name}... ", end="")
-        download_package_json(package_name)
-        print("Done")
-
-        package_json = load_json(package_name)
-        try:
-            print(f"Downloading and compressing package {package_name} ... ", end="")
-            download_package_code(package_name, package_json)
-            print("Done")
-        except (IndexError, KeyError):
-            print(f"Could not locate source for {package_name}")
-            continue
-        finally:
-            remove_json(package_name)
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/find_max_nesting.py b/Tools/peg_generator/scripts/find_max_nesting.py
deleted file mode 100755
index 92045c93ff76d6..00000000000000
--- a/Tools/peg_generator/scripts/find_max_nesting.py
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/usr/bin/env python3.8
-"""Find the maximum amount of nesting for an expression that can be parsed
-without causing a parse error.
-
-Starting at the INITIAL_NESTING_DEPTH, an expression containing n parenthesis
-around a 0 is generated then tested with both the C and Python parsers. We
-continue incrementing the number of parenthesis by 10 until both parsers have
-failed. As soon as a single parser fails, we stop testing that parser.
-
-The grammar file, initial nesting size, and amount by which the nested size is
-incremented on each success can be controlled by changing the GRAMMAR_FILE,
-INITIAL_NESTING_DEPTH, or NESTED_INCR_AMT variables.
-
-Usage: python -m scripts.find_max_nesting
-"""
-import sys
-import ast
-
-GRAMMAR_FILE = "data/python.gram"
-INITIAL_NESTING_DEPTH = 10
-NESTED_INCR_AMT = 10
-
-
-FAIL = "\033[91m"
-ENDC = "\033[0m"
-
-
-def check_nested_expr(nesting_depth: int) -> bool:
-    expr = f"{'(' * nesting_depth}0{')' * nesting_depth}"
-    try:
-        ast.parse(expr)
-        print(f"Nesting depth of {nesting_depth} is successful")
-        return True
-    except Exception as err:
-        print(f"{FAIL}(Failed with nesting depth of {nesting_depth}{ENDC}")
-        print(f"{FAIL}\t{err}{ENDC}")
-        return False
-
-
-def main() -> None:
-    print(f"Testing {GRAMMAR_FILE} starting at nesting depth of {INITIAL_NESTING_DEPTH}...")
-
-    nesting_depth = INITIAL_NESTING_DEPTH
-    succeeded = True
-    while succeeded:
-        expr = f"{'(' * nesting_depth}0{')' * nesting_depth}"
-        if succeeded:
-            succeeded = check_nested_expr(nesting_depth)
-        nesting_depth += NESTED_INCR_AMT
-
-    sys.exit(1)
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/grammar_grapher.py b/Tools/peg_generator/scripts/grammar_grapher.py
deleted file mode 100755
index e5271a0e4810f9..00000000000000
--- a/Tools/peg_generator/scripts/grammar_grapher.py
+++ /dev/null
@@ -1,119 +0,0 @@
-#!/usr/bin/env python3.8
-
-""" Convert a grammar into a dot-file suitable for use with GraphViz
-
-    For example:
-        Generate the GraphViz file:
-        # scripts/grammar_grapher.py data/python.gram > python.gv
-
-        Then generate the graph...
-
-        # twopi python.gv -Tpng > python_twopi.png
-
-        or
-
-        # dot python.gv -Tpng > python_dot.png
-
-        NOTE: The _dot_ and _twopi_ tools seem to produce the most useful results.
-              The _circo_ tool is the worst of the bunch. Don't even bother.
-"""
-
-import argparse
-import sys
-
-from typing import Any, List
-
-sys.path.insert(0, ".")
-
-from pegen.build import build_parser
-from pegen.grammar import (
-    Alt,
-    Cut,
-    Forced,
-    Group,
-    Leaf,
-    Lookahead,
-    Rule,
-    NameLeaf,
-    NamedItem,
-    Opt,
-    Repeat,
-    Rhs,
-)
-
-argparser = argparse.ArgumentParser(
-    prog="graph_grammar",
-    description="Graph a grammar tree",
-)
-argparser.add_argument(
-    "-s",
-    "--start",
-    choices=["exec", "eval", "single"],
-    default="exec",
-    help="Choose the grammar's start rule (exec, eval or single)",
-)
-argparser.add_argument("grammar_file", help="The grammar file to graph")
-
-
-def references_for_item(item: Any) -> List[Any]:
-    if isinstance(item, Alt):
-        return [_ref for _item in item.items for _ref in references_for_item(_item)]
-    elif isinstance(item, Cut):
-        return []
-    elif isinstance(item, Forced):
-        return references_for_item(item.node)
-    elif isinstance(item, Group):
-        return references_for_item(item.rhs)
-    elif isinstance(item, Lookahead):
-        return references_for_item(item.node)
-    elif isinstance(item, NamedItem):
-        return references_for_item(item.item)
-
-    # NOTE NameLeaf must be before Leaf
-    elif isinstance(item, NameLeaf):
-        if item.value == "ENDMARKER":
-            return []
-        return [item.value]
-    elif isinstance(item, Leaf):
-        return []
-
-    elif isinstance(item, Opt):
-        return references_for_item(item.node)
-    elif isinstance(item, Repeat):
-        return references_for_item(item.node)
-    elif isinstance(item, Rhs):
-        return [_ref for alt in item.alts for _ref in references_for_item(alt)]
-    elif isinstance(item, Rule):
-        return references_for_item(item.rhs)
-    else:
-        raise RuntimeError(f"Unknown item: {type(item)}")
-
-
-def main() -> None:
-    args = argparser.parse_args()
-
-    try:
-        grammar, parser, tokenizer = build_parser(args.grammar_file)
-    except Exception as err:
-        print("ERROR: Failed to parse grammar file", file=sys.stderr)
-        sys.exit(1)
-
-    references = {}
-    for name, rule in grammar.rules.items():
-        references[name] = set(references_for_item(rule))
-
-    # Flatten the start node if has only a single reference
-    root_node = {"exec": "file", "eval": "eval", "single": "interactive"}[args.start]
-
-    print("digraph g1 {")
-    print('\toverlap="scale";')  # Force twopi to scale the graph to avoid overlaps
-    print(f'\troot="{root_node}";')
-    print(f"\t{root_node} [color=green, shape=circle];")
-    for name, refs in references.items():
-        for ref in refs:
-            print(f"\t{name} -> {ref};")
-    print("}")
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/joinstats.py b/Tools/peg_generator/scripts/joinstats.py
deleted file mode 100644
index b2d762b3d4286a..00000000000000
--- a/Tools/peg_generator/scripts/joinstats.py
+++ /dev/null
@@ -1,66 +0,0 @@
-#!/usr/bin/env python3.8
-
-"""Produce a report about the most-memoable types.
-
-Reads a list of statistics from stdin.  Each line must be two numbers,
-being a type and a count.  We then read some other files and produce a
-list sorted by most frequent type.
-
-There should also be something to recognize left-recursive rules.
-"""
-
-import os
-import re
-import sys
-
-from typing import Dict
-
-reporoot = os.path.dirname(os.path.dirname(__file__))
-parse_c = os.path.join(reporoot, "peg_extension", "parse.c")
-
-
-class TypeMapper:
-    """State used to map types to names."""
-
-    def __init__(self, filename: str) -> None:
-        self.table: Dict[int, str] = {}
-        with open(filename) as f:
-            for line in f:
-                match = re.match(r"#define (\w+)_type (\d+)", line)
-                if match:
-                    name, type = match.groups()
-                    if "left" in line.lower():
-                        name += " // Left-recursive"
-                    self.table[int(type)] = name
-
-    def lookup(self, type: int) -> str:
-        return self.table.get(type, str(type))
-
-
-def main() -> None:
-    mapper = TypeMapper(parse_c)
-    table = []
-    filename = sys.argv[1]
-    with open(filename) as f:
-        for lineno, line in enumerate(f, 1):
-            line = line.strip()
-            if not line or line.startswith("#"):
-                continue
-            parts = line.split()
-            # Extra fields ignored
-            if len(parts) < 2:
-                print(f"{lineno}: bad input ({line!r})")
-                continue
-            try:
-                type, count = map(int, parts[:2])
-            except ValueError as err:
-                print(f"{lineno}: non-integer input ({line!r})")
-                continue
-            table.append((type, count))
-    table.sort(key=lambda values: -values[1])
-    for type, count in table:
-        print(f"{type:4d} {count:9d} {mapper.lookup(type)}")
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/test_parse_directory.py b/Tools/peg_generator/scripts/test_parse_directory.py
deleted file mode 100755
index f5cf198be8dabf..00000000000000
--- a/Tools/peg_generator/scripts/test_parse_directory.py
+++ /dev/null
@@ -1,148 +0,0 @@
-#!/usr/bin/env python3.8
-
-import argparse
-import ast
-import os
-import sys
-import time
-import tokenize
-from glob import glob, escape
-from pathlib import PurePath
-
-from typing import List, Optional, Any, Tuple
-
-sys.path.insert(0, os.getcwd())
-from pegen.testutil import print_memstats
-
-SUCCESS = "\033[92m"
-FAIL = "\033[91m"
-ENDC = "\033[0m"
-
-COMPILE = 2
-PARSE = 1
-NOTREE = 0
-
-argparser = argparse.ArgumentParser(
-    prog="test_parse_directory",
-    description="Helper program to test directories or files for pegen",
-)
-argparser.add_argument("-d", "--directory", help="Directory path containing files to test")
-argparser.add_argument(
-    "-e", "--exclude", action="append", default=[], help="Glob(s) for matching files to exclude"
-)
-argparser.add_argument(
-    "-s", "--short", action="store_true", help="Only show errors, in a more Emacs-friendly format"
-)
-argparser.add_argument(
-    "-v", "--verbose", action="store_true", help="Display detailed errors for failures"
-)
-
-
-def report_status(
-    succeeded: bool,
-    file: str,
-    verbose: bool,
-    error: Optional[Exception] = None,
-    short: bool = False,
-) -> None:
-    if short and succeeded:
-        return
-
-    if succeeded is True:
-        status = "OK"
-        COLOR = SUCCESS
-    else:
-        status = "Fail"
-        COLOR = FAIL
-
-    if short:
-        lineno = 0
-        offset = 0
-        if isinstance(error, SyntaxError):
-            lineno = error.lineno or 1
-            offset = error.offset or 1
-            message = error.args[0]
-        else:
-            message = f"{error.__class__.__name__}: {error}"
-        print(f"{file}:{lineno}:{offset}: {message}")
-    else:
-        print(f"{COLOR}{file:60} {status}{ENDC}")
-
-        if error and verbose:
-            print(f"  {str(error.__class__.__name__)}: {error}")
-
-
-def parse_file(source: str, file: str) -> Tuple[Any, float]:
-    t0 = time.time()
-    result = ast.parse(source, filename=file)
-    t1 = time.time()
-    return result, t1 - t0
-
-
-def generate_time_stats(files, total_seconds) -> None:
-    total_files = len(files)
-    total_bytes = 0
-    total_lines = 0
-    for file in files:
-        # Count lines and bytes separately
-        with open(file, "rb") as f:
-            total_lines += sum(1 for _ in f)
-            total_bytes += f.tell()
-
-    print(
-        f"Checked {total_files:,} files, {total_lines:,} lines,",
-        f"{total_bytes:,} bytes in {total_seconds:,.3f} seconds.",
-    )
-    if total_seconds > 0:
-        print(
-            f"That's {total_lines / total_seconds :,.0f} lines/sec,",
-            f"or {total_bytes / total_seconds :,.0f} bytes/sec.",
-        )
-
-
-def parse_directory(directory: str, verbose: bool, excluded_files: List[str], short: bool) -> int:
-    # For a given directory, traverse files and attempt to parse each one
-    # - Output success/failure for each file
-    errors = 0
-    files = []
-    total_seconds = 0
-
-    for file in sorted(glob(os.path.join(escape(directory), f"**/*.py"), recursive=True)):
-        # Only attempt to parse Python files and files that are not excluded
-        if any(PurePath(file).match(pattern) for pattern in excluded_files):
-            continue
-
-        with tokenize.open(file) as f:
-            source = f.read()
-
-        try:
-            result, dt = parse_file(source, file)
-            total_seconds += dt
-            report_status(succeeded=True, file=file, verbose=verbose, short=short)
-        except SyntaxError as error:
-            report_status(succeeded=False, file=file, verbose=verbose, error=error, short=short)
-            errors += 1
-        files.append(file)
-
-    generate_time_stats(files, total_seconds)
-    if short:
-        print_memstats()
-
-    if errors:
-        print(f"Encountered {errors} failures.", file=sys.stderr)
-        return 1
-
-    return 0
-
-
-def main() -> None:
-    args = argparser.parse_args()
-    directory = args.directory
-    verbose = args.verbose
-    excluded_files = args.exclude
-    short = args.short
-    sys.exit(parse_directory(directory, verbose, excluded_files, short))
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/peg_generator/scripts/test_pypi_packages.py b/Tools/peg_generator/scripts/test_pypi_packages.py
deleted file mode 100755
index 01ccc3d21ef5a5..00000000000000
--- a/Tools/peg_generator/scripts/test_pypi_packages.py
+++ /dev/null
@@ -1,92 +0,0 @@
-#!/usr/bin/env python3.8
-
-import argparse
-import os
-import glob
-import tarfile
-import zipfile
-import shutil
-import pathlib
-import sys
-
-from typing import Generator
-
-sys.path.insert(0, ".")
-
-from scripts import test_parse_directory
-
-HERE = pathlib.Path(__file__).resolve().parent
-
-argparser = argparse.ArgumentParser(
-    prog="test_pypi_packages",
-    description="Helper program to test parsing PyPI packages",
-)
-argparser.add_argument(
-    "-t", "--tree", action="count", help="Compare parse tree to official AST", default=0
-)
-
-
-def get_packages() -> Generator[str, None, None]:
-    all_packages = (
-        glob.glob("./data/pypi/*.tar.gz")
-        + glob.glob("./data/pypi/*.zip")
-        + glob.glob("./data/pypi/*.tgz")
-    )
-    for package in all_packages:
-        yield package
-
-
-def extract_files(filename: str) -> None:
-    savedir = os.path.join("data", "pypi")
-    if tarfile.is_tarfile(filename):
-        tarfile.open(filename).extractall(savedir)
-    elif zipfile.is_zipfile(filename):
-        zipfile.ZipFile(filename).extractall(savedir)
-    else:
-        raise ValueError(f"Could not identify type of compressed file {filename}")
-
-
-def find_dirname(package_name: str) -> str:
-    for name in os.listdir(os.path.join("data", "pypi")):
-        full_path = os.path.join("data", "pypi", name)
-        if os.path.isdir(full_path) and name in package_name:
-            return full_path
-    assert False  # This is to fix mypy, should never be reached
-
-
-def run_tests(dirname: str, tree: int) -> int:
-    return test_parse_directory.parse_directory(
-        dirname,
-        verbose=False,
-        excluded_files=[],
-        tree_arg=tree,
-        short=True,
-        mode=1 if tree else 0,
-        parser="pegen",
-    )
-
-
-def main() -> None:
-    args = argparser.parse_args()
-    tree = args.tree
-
-    for package in get_packages():
-        print(f"Extracting files from {package}... ", end="")
-        try:
-            extract_files(package)
-            print("Done")
-        except ValueError as e:
-            print(e)
-            continue
-
-        print(f"Trying to parse all python files ... ")
-        dirname = find_dirname(package)
-        status = run_tests(dirname, tree)
-        if status == 0:
-            shutil.rmtree(dirname)
-        else:
-            print(f"Failed to parse {dirname}")
-
-
-if __name__ == "__main__":
-    main()
diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
new file mode 100644
index 00000000000000..3a2e62f70bbb60
--- /dev/null
+++ b/Tools/requirements-dev.txt
@@ -0,0 +1,7 @@
+# Requirements file for external linters and checks we run on
+# Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
+mypy==1.7.1
+
+# needed for peg_generator:
+types-psutil==5.9.5.17
+types-setuptools==69.0.0.0
diff --git a/Tools/requirements-hypothesis.txt b/Tools/requirements-hypothesis.txt
new file mode 100644
index 00000000000000..1bca5d2367f4b2
--- /dev/null
+++ b/Tools/requirements-hypothesis.txt
@@ -0,0 +1,4 @@
+# Requirements file for hypothesis that
+# we use to run our property-based tests in CI.
+
+hypothesis==6.91.0
diff --git a/Tools/scripts/2to3 b/Tools/scripts/2to3
deleted file mode 100755
index f27d18ecf67086..00000000000000
--- a/Tools/scripts/2to3
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env python3
-import sys
-from lib2to3.main import main
-
-sys.exit(main("lib2to3.fixes"))
diff --git a/Tools/scripts/README b/Tools/scripts/README
index 9dbb89a8dae633..a078bfbf662a37 100644
--- a/Tools/scripts/README
+++ b/Tools/scripts/README
@@ -1,7 +1,6 @@
 This directory contains a collection of executable Python scripts that are
 useful while building, extending or managing Python.
 
-2to3                      Main script for running the 2to3 conversion tool
 checkpip.py               Checks the version of the projects bundled in ensurepip
                           are the latest available
 combinerefs.py            A helper for analyzing PYTHONDUMPREFS output
diff --git a/Tools/scripts/run_tests.py b/Tools/scripts/run_tests.py
deleted file mode 100644
index 445a34ae3e8eee..00000000000000
--- a/Tools/scripts/run_tests.py
+++ /dev/null
@@ -1,92 +0,0 @@
-"""Run Python's test suite in a fast, rigorous way.
-
-The defaults are meant to be reasonably thorough, while skipping certain
-tests that can be time-consuming or resource-intensive (e.g. largefile),
-or distracting (e.g. audio and gui). These defaults can be overridden by
-simply passing a -u option to this script.
-
-"""
-
-import os
-import shlex
-import sys
-import sysconfig
-import test.support
-
-
-def is_multiprocess_flag(arg):
-    return arg.startswith('-j') or arg.startswith('--multiprocess')
-
-
-def is_resource_use_flag(arg):
-    return arg.startswith('-u') or arg.startswith('--use')
-
-def is_python_flag(arg):
-    return arg.startswith('-p') or arg.startswith('--python')
-
-
-def main(regrtest_args):
-    args = [sys.executable,
-            '-u',                 # Unbuffered stdout and stderr
-            '-W', 'default',      # Warnings set to 'default'
-            '-bb',                # Warnings about bytes/bytearray
-            ]
-
-    cross_compile = '_PYTHON_HOST_PLATFORM' in os.environ
-    if (hostrunner := os.environ.get("_PYTHON_HOSTRUNNER")) is None:
-        hostrunner = sysconfig.get_config_var("HOSTRUNNER")
-    if cross_compile:
-        # emulate -E, but keep PYTHONPATH + cross compile env vars, so
-        # test executable can load correct sysconfigdata file.
-        keep = {
-            '_PYTHON_PROJECT_BASE',
-            '_PYTHON_HOST_PLATFORM',
-            '_PYTHON_SYSCONFIGDATA_NAME',
-            'PYTHONPATH'
-        }
-        environ = {
-            name: value for name, value in os.environ.items()
-            if not name.startswith(('PYTHON', '_PYTHON')) or name in keep
-        }
-    else:
-        environ = os.environ.copy()
-        args.append("-E")
-
-    # Allow user-specified interpreter options to override our defaults.
-    args.extend(test.support.args_from_interpreter_flags())
-
-    args.extend(['-m', 'test',    # Run the test suite
-                 '-r',            # Randomize test order
-                 '-w',            # Re-run failed tests in verbose mode
-                 ])
-    if sys.platform == 'win32':
-        args.append('-n')         # Silence alerts under Windows
-    if not any(is_multiprocess_flag(arg) for arg in regrtest_args):
-        if cross_compile and hostrunner:
-            # For now use only two cores for cross-compiled builds;
-            # hostrunner can be expensive.
-            args.extend(['-j', '2'])
-        else:
-            args.extend(['-j', '0'])  # Use all CPU cores
-    if not any(is_resource_use_flag(arg) for arg in regrtest_args):
-        args.extend(['-u', 'all,-largefile,-audio,-gui'])
-
-    if cross_compile and hostrunner:
-        # If HOSTRUNNER is set and -p/--python option is not given, then
-        # use hostrunner to execute python binary for tests.
-        if not any(is_python_flag(arg) for arg in regrtest_args):
-            buildpython = sysconfig.get_config_var("BUILDPYTHON")
-            args.extend(["--python", f"{hostrunner} {buildpython}"])
-
-    args.extend(regrtest_args)
-
-    print(shlex.join(args))
-    if sys.platform == 'win32':
-        from subprocess import call
-        sys.exit(call(args))
-    else:
-        os.execve(sys.executable, args, environ)
-
-
-if __name__ == '__main__':
-    main(sys.argv[1:])
diff --git a/Tools/scripts/summarize_stats.py b/Tools/scripts/summarize_stats.py
index 9c881897c2de1d..360b7c720bd1f0 100644
--- a/Tools/scripts/summarize_stats.py
+++ b/Tools/scripts/summarize_stats.py
@@ -2,619 +2,1175 @@
 default stats folders.
 """
 
+from __future__ import annotations
+
+# NOTE: Bytecode introspection modules (opcode, dis, etc.) should only
+# be imported when loading a single dataset. When comparing datasets, it
+# could get it wrong, leading to subtle errors.
+
 import argparse
 import collections
-import json
-import os.path
-import opcode
+from collections.abc import KeysView
 from datetime import date
+import enum
+import functools
 import itertools
+import json
+from operator import itemgetter
+import os
+from pathlib import Path
+import re
 import sys
+from typing import Any, Callable, TextIO, TypeAlias
+
+
+RawData: TypeAlias = dict[str, Any]
+Rows: TypeAlias = list[tuple]
+Columns: TypeAlias = tuple[str, ...]
+RowCalculator: TypeAlias = Callable[["Stats"], Rows]
+
+
+# TODO: Check for parity
+
 
 if os.name == "nt":
     DEFAULT_DIR = "c:\\temp\\py_stats\\"
 else:
     DEFAULT_DIR = "/tmp/py_stats/"
 
-#Create list of all instruction names
-specialized = iter(opcode._specialized_instructions)
-opname = ["<0>"]
-for name in opcode.opname[1:]:
-    if name.startswith("<"):
-        try:
-            name = next(specialized)
-        except StopIteration:
-            pass
-    opname.append(name)
-
-# opcode_name --> opcode
-# Sort alphabetically.
-opmap = {name: i for i, name in enumerate(opname)}
-opmap = dict(sorted(opmap.items()))
+
+SOURCE_DIR = Path(__file__).parents[2]
+
 
 TOTAL = "specialization.hit", "specialization.miss", "execution_count"
 
-def format_ratio(num, den):
-    """
-    Format a ratio as a percentage. When the denominator is 0, returns the empty
-    string.
-    """
-    if den == 0:
-        return ""
-    else:
-        return f"{num/den:.01%}"
 
-def join_rows(a_rows, b_rows):
-    """
-    Joins two tables together, side-by-side, where the first column in each is a
-    common key.
-    """
-    if len(a_rows) == 0 and len(b_rows) == 0:
-        return []
+def pretty(name: str) -> str:
+    return name.replace("_", " ").lower()
 
-    if len(a_rows):
-        a_ncols = list(set(len(x) for x in a_rows))
-        if len(a_ncols) != 1:
-            raise ValueError("Table a is ragged")
 
-    if len(b_rows):
-        b_ncols = list(set(len(x) for x in b_rows))
-        if len(b_ncols) != 1:
-            raise ValueError("Table b is ragged")
+def _load_metadata_from_source():
+    def get_defines(filepath: Path, prefix: str = "SPEC_FAIL"):
+        with open(SOURCE_DIR / filepath) as spec_src:
+            defines = collections.defaultdict(list)
+            start = "#define " + prefix + "_"
+            for line in spec_src:
+                line = line.strip()
+                if not line.startswith(start):
+                    continue
+                line = line[len(start) :]
+                name, val = line.split()
+                defines[int(val.strip())].append(name.strip())
+        return defines
+
+    import opcode
+
+    return {
+        "_specialized_instructions": [
+            op for op in opcode._specialized_opmap.keys() if "__" not in op  # type: ignore
+        ],
+        "_stats_defines": get_defines(
+            Path("Include") / "cpython" / "pystats.h", "EVAL_CALL"
+        ),
+        "_defines": get_defines(Path("Python") / "specialize.c"),
+    }
+
+
+def load_raw_data(input: Path) -> RawData:
+    if input.is_file():
+        with open(input, "r") as fd:
+            data = json.load(fd)
 
-    if len(a_rows) and len(b_rows) and a_ncols[0] != b_ncols[0]:
-        raise ValueError("Tables have different widths")
+        data["_stats_defines"] = {int(k): v for k, v in data["_stats_defines"].items()}
+        data["_defines"] = {int(k): v for k, v in data["_defines"].items()}
 
-    if len(a_rows):
-        ncols = a_ncols[0]
-    else:
-        ncols = b_ncols[0]
-
-    default = [""] * (ncols - 1)
-    a_data = {x[0]: x[1:] for x in a_rows}
-    b_data = {x[0]: x[1:] for x in b_rows}
-
-    if len(a_data) != len(a_rows) or len(b_data) != len(b_rows):
-        raise ValueError("Duplicate keys")
-
-    # To preserve ordering, use A's keys as is and then add any in B that aren't
-    # in A
-    keys = list(a_data.keys()) + [k for k in b_data.keys() if k not in a_data]
-    return [(k, *a_data.get(k, default), *b_data.get(k, default)) for k in keys]
-
-def calculate_specialization_stats(family_stats, total):
-    rows = []
-    for key in sorted(family_stats):
-        if key.startswith("specialization.failure_kinds"):
-            continue
-        if key in ("specialization.hit", "specialization.miss"):
-            label = key[len("specialization."):]
-        elif key == "execution_count":
-            continue
-        elif key in ("specialization.success",  "specialization.failure", "specializable"):
-            continue
-        elif key.startswith("pair"):
-            continue
-        else:
-            label = key
-        rows.append((f"{label:>12}", f"{family_stats[key]:>12}", format_ratio(family_stats[key], total)))
-    return rows
-
-def calculate_specialization_success_failure(family_stats):
-    total_attempts = 0
-    for key in ("specialization.success",  "specialization.failure"):
-        total_attempts += family_stats.get(key, 0)
-    rows = []
-    if total_attempts:
-        for key in ("specialization.success",  "specialization.failure"):
-            label = key[len("specialization."):]
-            label = label[0].upper() + label[1:]
-            val = family_stats.get(key, 0)
-            rows.append((label, val, format_ratio(val, total_attempts)))
-    return rows
-
-def calculate_specialization_failure_kinds(name, family_stats, defines):
-    total_failures = family_stats.get("specialization.failure", 0)
-    failure_kinds = [ 0 ] * 40
-    for key in family_stats:
-        if not key.startswith("specialization.failure_kind"):
-            continue
-        _, index = key[:-1].split("[")
-        index = int(index)
-        failure_kinds[index] = family_stats[key]
-    failures = [(value, index) for (index, value) in enumerate(failure_kinds)]
-    failures.sort(reverse=True)
-    rows = []
-    for value, index in failures:
-        if not value:
-            continue
-        rows.append((kind_to_text(index, defines, name), value, format_ratio(value, total_failures)))
-    return rows
-
-def print_specialization_stats(name, family_stats, defines):
-    if "specializable" not in family_stats:
-        return
-    total = sum(family_stats.get(kind, 0) for kind in TOTAL)
-    if total == 0:
-        return
-    with Section(name, 3, f"specialization stats for {name} family"):
-        rows = calculate_specialization_stats(family_stats, total)
-        emit_table(("Kind", "Count", "Ratio"), rows)
-        rows = calculate_specialization_success_failure(family_stats)
-        if rows:
-            print_title("Specialization attempts", 4)
-            emit_table(("", "Count:", "Ratio:"), rows)
-            rows = calculate_specialization_failure_kinds(name, family_stats, defines)
-            emit_table(("Failure kind", "Count:", "Ratio:"), rows)
-
-def print_comparative_specialization_stats(name, base_family_stats, head_family_stats, defines):
-    if "specializable" not in base_family_stats:
-        return
-
-    base_total = sum(base_family_stats.get(kind, 0) for kind in TOTAL)
-    head_total = sum(head_family_stats.get(kind, 0) for kind in TOTAL)
-    if base_total + head_total == 0:
-        return
-    with Section(name, 3, f"specialization stats for {name} family"):
-        base_rows = calculate_specialization_stats(base_family_stats, base_total)
-        head_rows = calculate_specialization_stats(head_family_stats, head_total)
-        emit_table(
-            ("Kind", "Base Count", "Base Ratio", "Head Count", "Head Ratio"),
-            join_rows(base_rows, head_rows)
-        )
-        base_rows = calculate_specialization_success_failure(base_family_stats)
-        head_rows = calculate_specialization_success_failure(head_family_stats)
-        rows = join_rows(base_rows, head_rows)
-        if rows:
-            print_title("Specialization attempts", 4)
-            emit_table(("", "Base Count:", "Base Ratio:", "Head Count:", "Head Ratio:"), rows)
-            base_rows = calculate_specialization_failure_kinds(name, base_family_stats, defines)
-            head_rows = calculate_specialization_failure_kinds(name, head_family_stats, defines)
-            emit_table(
-                ("Failure kind", "Base Count:", "Base Ratio:", "Head Count:", "Head Ratio:"),
-                join_rows(base_rows, head_rows)
-            )
+        return data
 
-def gather_stats(input):
-    # Note the output of this function must be JSON-serializable
+    elif input.is_dir():
+        stats = collections.Counter[str]()
 
-    if os.path.isfile(input):
-        with open(input, "r") as fd:
-            return json.load(fd)
-    elif os.path.isdir(input):
-        stats = collections.Counter()
-        for filename in os.listdir(input):
-            with open(os.path.join(input, filename)) as fd:
+        for filename in input.iterdir():
+            with open(filename) as fd:
                 for line in fd:
                     try:
                         key, value = line.split(":")
                     except ValueError:
-                        print(f"Unparsable line: '{line.strip()}' in  {filename}", file=sys.stderr)
+                        print(
+                            f"Unparsable line: '{line.strip()}' in {filename}",
+                            file=sys.stderr,
+                        )
                         continue
-                    key = key.strip()
-                    value = int(value)
-                    stats[key] += value
-            stats['__nfiles__'] += 1
-        return stats
+                    stats[key.strip()] += int(value)
+            stats["__nfiles__"] += 1
+
+        data = dict(stats)
+        data.update(_load_metadata_from_source())
+        return data
+
     else:
         raise ValueError(f"{input:r} is not a file or directory path")
 
-def extract_opcode_stats(stats):
-    opcode_stats = [ {} for _ in range(256) ]
-    for key, value in stats.items():
-        if not key.startswith("opcode"):
-            continue
-        n, _, rest = key[7:].partition("]")
-        opcode_stats[int(n)][rest.strip(".")] = value
-    return opcode_stats
-
-def parse_kinds(spec_src, prefix="SPEC_FAIL"):
-    defines = collections.defaultdict(list)
-    start = "#define " + prefix + "_"
-    for line in spec_src:
-        line = line.strip()
-        if not line.startswith(start):
-            continue
-        line = line[len(start):]
-        name, val = line.split()
-        defines[int(val.strip())].append(name.strip())
-    return defines
-
-def pretty(defname):
-    return defname.replace("_", " ").lower()
-
-def kind_to_text(kind, defines, opname):
-    if kind <= 8:
-        return pretty(defines[kind][0])
-    if opname == "LOAD_SUPER_ATTR":
-        opname = "SUPER"
-    elif opname.endswith("ATTR"):
-        opname = "ATTR"
-    elif opname in ("FOR_ITER", "SEND"):
-        opname = "ITER"
-    elif opname.endswith("SUBSCR"):
-        opname = "SUBSCR"
-    for name in defines[kind]:
-        if name.startswith(opname):
-            return pretty(name[len(opname)+1:])
-    return "kind " + str(kind)
-
-def categorized_counts(opcode_stats):
-    basic = 0
-    specialized = 0
-    not_specialized = 0
-    specialized_instructions = {
-        op for op in opcode._specialized_instructions
-        if "__" not in op}
-    for i, opcode_stat in enumerate(opcode_stats):
-        if "execution_count" not in opcode_stat:
-            continue
-        count = opcode_stat['execution_count']
-        name = opname[i]
-        if "specializable" in opcode_stat:
-            not_specialized += count
-        elif name in specialized_instructions:
-            miss = opcode_stat.get("specialization.miss", 0)
-            not_specialized += miss
-            specialized += count - miss
+
+def save_raw_data(data: RawData, json_output: TextIO):
+    json.dump(data, json_output)
+
+
+class OpcodeStats:
+    """
+    Manages the data related to specific set of opcodes, e.g. tier1 (with prefix
+    "opcode") or tier2 (with prefix "uops").
+    """
+
+    def __init__(self, data: dict[str, Any], defines, specialized_instructions):
+        self._data = data
+        self._defines = defines
+        self._specialized_instructions = specialized_instructions
+
+    def get_opcode_names(self) -> KeysView[str]:
+        return self._data.keys()
+
+    def get_pair_counts(self) -> dict[tuple[str, str], int]:
+        pair_counts = {}
+        for name_i, opcode_stat in self._data.items():
+            for key, value in opcode_stat.items():
+                if value and key.startswith("pair_count"):
+                    name_j, _, _ = key[len("pair_count") + 1 :].partition("]")
+                    pair_counts[(name_i, name_j)] = value
+        return pair_counts
+
+    def get_total_execution_count(self) -> int:
+        return sum(x.get("execution_count", 0) for x in self._data.values())
+
+    def get_execution_counts(self) -> dict[str, tuple[int, int]]:
+        counts = {}
+        for name, opcode_stat in self._data.items():
+            if "execution_count" in opcode_stat:
+                count = opcode_stat["execution_count"]
+                miss = 0
+                if "specializable" not in opcode_stat:
+                    miss = opcode_stat.get("specialization.miss", 0)
+                counts[name] = (count, miss)
+        return counts
+
+    @functools.cache
+    def _get_pred_succ(
+        self,
+    ) -> tuple[dict[str, collections.Counter], dict[str, collections.Counter]]:
+        pair_counts = self.get_pair_counts()
+
+        predecessors: dict[str, collections.Counter] = collections.defaultdict(
+            collections.Counter
+        )
+        successors: dict[str, collections.Counter] = collections.defaultdict(
+            collections.Counter
+        )
+        for (first, second), count in pair_counts.items():
+            if count:
+                predecessors[second][first] = count
+                successors[first][second] = count
+
+        return predecessors, successors
+
+    def get_predecessors(self, opcode: str) -> collections.Counter[str]:
+        return self._get_pred_succ()[0][opcode]
+
+    def get_successors(self, opcode: str) -> collections.Counter[str]:
+        return self._get_pred_succ()[1][opcode]
+
+    def _get_stats_for_opcode(self, opcode: str) -> dict[str, int]:
+        return self._data[opcode]
+
+    def get_specialization_total(self, opcode: str) -> int:
+        family_stats = self._get_stats_for_opcode(opcode)
+        return sum(family_stats.get(kind, 0) for kind in TOTAL)
+
+    def get_specialization_counts(self, opcode: str) -> dict[str, int]:
+        family_stats = self._get_stats_for_opcode(opcode)
+
+        result = {}
+        for key, value in sorted(family_stats.items()):
+            if key.startswith("specialization."):
+                label = key[len("specialization.") :]
+                if label in ("success", "failure") or label.startswith("failure_kinds"):
+                    continue
+            elif key in (
+                "execution_count",
+                "specializable",
+            ) or key.startswith("pair"):
+                continue
+            else:
+                label = key
+            result[label] = value
+
+        return result
+
+    def get_specialization_success_failure(self, opcode: str) -> dict[str, int]:
+        family_stats = self._get_stats_for_opcode(opcode)
+        result = {}
+        for key in ("specialization.success", "specialization.failure"):
+            label = key[len("specialization.") :]
+            val = family_stats.get(key, 0)
+            result[label] = val
+        return result
+
+    def get_specialization_failure_total(self, opcode: str) -> int:
+        return self._get_stats_for_opcode(opcode).get("specialization.failure", 0)
+
+    def get_specialization_failure_kinds(self, opcode: str) -> dict[str, int]:
+        def kind_to_text(kind: int, opcode: str):
+            if kind <= 8:
+                return pretty(self._defines[kind][0])
+            if opcode == "LOAD_SUPER_ATTR":
+                opcode = "SUPER"
+            elif opcode.endswith("ATTR"):
+                opcode = "ATTR"
+            elif opcode in ("FOR_ITER", "SEND"):
+                opcode = "ITER"
+            elif opcode.endswith("SUBSCR"):
+                opcode = "SUBSCR"
+            for name in self._defines[kind]:
+                if name.startswith(opcode):
+                    return pretty(name[len(opcode) + 1 :])
+            return "kind " + str(kind)
+
+        family_stats = self._get_stats_for_opcode(opcode)
+        failure_kinds = [0] * 40
+        for key in family_stats:
+            if not key.startswith("specialization.failure_kind"):
+                continue
+            index = int(key[:-1].split("[")[1])
+            failure_kinds[index] = family_stats[key]
+        return {
+            kind_to_text(index, opcode): value
+            for (index, value) in enumerate(failure_kinds)
+            if value
+        }
+
+    def is_specializable(self, opcode: str) -> bool:
+        return "specializable" in self._get_stats_for_opcode(opcode)
+
+    def get_specialized_total_counts(self) -> tuple[int, int, int]:
+        basic = 0
+        specialized_hits = 0
+        specialized_misses = 0
+        not_specialized = 0
+        for opcode, opcode_stat in self._data.items():
+            if "execution_count" not in opcode_stat:
+                continue
+            count = opcode_stat["execution_count"]
+            if "specializable" in opcode_stat:
+                not_specialized += count
+            elif opcode in self._specialized_instructions:
+                miss = opcode_stat.get("specialization.miss", 0)
+                specialized_hits += count - miss
+                specialized_misses += miss
+            else:
+                basic += count
+        return basic, specialized_hits, specialized_misses, not_specialized
+
+    def get_deferred_counts(self) -> dict[str, int]:
+        return {
+            opcode: opcode_stat.get("specialization.deferred", 0)
+            for opcode, opcode_stat in self._data.items()
+            if opcode != "RESUME"
+        }
+
+    def get_misses_counts(self) -> dict[str, int]:
+        return {
+            opcode: opcode_stat.get("specialization.miss", 0)
+            for opcode, opcode_stat in self._data.items()
+            if not self.is_specializable(opcode)
+        }
+
+    def get_opcode_counts(self) -> dict[str, int]:
+        counts = {}
+        for opcode, entry in self._data.items():
+            count = entry.get("count", 0)
+            if count:
+                counts[opcode] = count
+        return counts
+
+
+class Stats:
+    def __init__(self, data: RawData):
+        self._data = data
+
+    def get(self, key: str) -> int:
+        return self._data.get(key, 0)
+
+    @functools.cache
+    def get_opcode_stats(self, prefix: str) -> OpcodeStats:
+        opcode_stats = collections.defaultdict[str, dict](dict)
+        for key, value in self._data.items():
+            if not key.startswith(prefix):
+                continue
+            name, _, rest = key[len(prefix) + 1 :].partition("]")
+            opcode_stats[name][rest.strip(".")] = value
+        return OpcodeStats(
+            opcode_stats,
+            self._data["_defines"],
+            self._data["_specialized_instructions"],
+        )
+
+    def get_call_stats(self) -> dict[str, int]:
+        defines = self._data["_stats_defines"]
+        result = {}
+        for key, value in sorted(self._data.items()):
+            if "Calls to" in key:
+                result[key] = value
+            elif key.startswith("Calls "):
+                name, index = key[:-1].split("[")
+                label = f"{name} ({pretty(defines[int(index)][0])})"
+                result[label] = value
+
+        for key, value in sorted(self._data.items()):
+            if key.startswith("Frame"):
+                result[key] = value
+
+        return result
+
+    def get_object_stats(self) -> dict[str, tuple[int, int]]:
+        total_materializations = self._data.get("Object new values", 0)
+        total_allocations = self._data.get("Object allocations", 0) + self._data.get(
+            "Object allocations from freelist", 0
+        )
+        total_increfs = self._data.get(
+            "Object interpreter increfs", 0
+        ) + self._data.get("Object increfs", 0)
+        total_decrefs = self._data.get(
+            "Object interpreter decrefs", 0
+        ) + self._data.get("Object decrefs", 0)
+
+        result = {}
+        for key, value in self._data.items():
+            if key.startswith("Object"):
+                if "materialize" in key:
+                    den = total_materializations
+                elif "allocations" in key:
+                    den = total_allocations
+                elif "increfs" in key:
+                    den = total_increfs
+                elif "decrefs" in key:
+                    den = total_decrefs
+                else:
+                    den = None
+                label = key[6:].strip()
+                label = label[0].upper() + label[1:]
+                result[label] = (value, den)
+        return result
+
+    def get_gc_stats(self) -> list[dict[str, int]]:
+        gc_stats: list[dict[str, int]] = []
+        for key, value in self._data.items():
+            if not key.startswith("GC"):
+                continue
+            n, _, rest = key[3:].partition("]")
+            name = rest.strip()
+            gen_n = int(n)
+            while len(gc_stats) <= gen_n:
+                gc_stats.append({})
+            gc_stats[gen_n][name] = value
+        return gc_stats
+
+    def get_optimization_stats(self) -> dict[str, tuple[int, int | None]]:
+        if "Optimization attempts" not in self._data:
+            return {}
+
+        attempts = self._data["Optimization attempts"]
+        created = self._data["Optimization traces created"]
+        executed = self._data["Optimization traces executed"]
+        uops = self._data["Optimization uops executed"]
+        trace_stack_overflow = self._data["Optimization trace stack overflow"]
+        trace_stack_underflow = self._data["Optimization trace stack underflow"]
+        trace_too_long = self._data["Optimization trace too long"]
+        trace_too_short = self._data["Optimization trace too short"]
+        inner_loop = self._data["Optimization inner loop"]
+        recursive_call = self._data["Optimization recursive call"]
+
+        return {
+            "Optimization attempts": (attempts, None),
+            "Traces created": (created, attempts),
+            "Trace stack overflow": (trace_stack_overflow, attempts),
+            "Trace stack underflow": (trace_stack_underflow, attempts),
+            "Trace too long": (trace_too_long, attempts),
+            "Trace too short": (trace_too_short, attempts),
+            "Inner loop found": (inner_loop, attempts),
+            "Recursive call": (recursive_call, attempts),
+            "Traces executed": (executed, None),
+            "Uops executed": (uops, executed),
+        }
+
+    def get_histogram(self, prefix: str) -> list[tuple[int, int]]:
+        rows = []
+        for k, v in self._data.items():
+            match = re.match(f"{prefix}\\[([0-9]+)\\]", k)
+            if match is not None:
+                entry = int(match.groups()[0])
+                rows.append((entry, v))
+        rows.sort()
+        return rows
+
+
+class Count(int):
+    def markdown(self) -> str:
+        return format(self, ",d")
+
+
+class Ratio:
+    def __init__(self, num: int, den: int | None, percentage: bool = True):
+        self.num = num
+        self.den = den
+        self.percentage = percentage
+
+    def __float__(self):
+        if self.den == 0:
+            return 0.0
+        elif self.den is None:
+            return self.num
+        else:
+            return self.num / self.den
+
+    def markdown(self) -> str:
+        if self.den is None:
+            return ""
+        elif self.den == 0:
+            if self.num != 0:
+                return f"{self.num:,} / 0 !!"
+            return ""
+        elif self.percentage:
+            return f"{self.num / self.den:,.01%}"
+        else:
+            return f"{self.num / self.den:,.02f}"
+
+
+class DiffRatio(Ratio):
+    def __init__(self, base: int | str, head: int | str):
+        if isinstance(base, str) or isinstance(head, str):
+            super().__init__(0, 0)
+        else:
+            super().__init__(head - base, base)
+
+
+class JoinMode(enum.Enum):
+    # Join using the first column as a key
+    SIMPLE = 0
+    # Join using the first column as a key, and indicate the change in the
+    # second column of each input table as a new column
+    CHANGE = 1
+    # Join using the first column as a key, indicating the change in the second
+    # column of each input table as a ne column, and omit all other columns
+    CHANGE_ONE_COLUMN = 2
+
+
+class Table:
+    """
+    A Table defines how to convert a set of Stats into a specific set of rows
+    displaying some aspect of the data.
+    """
+
+    def __init__(
+        self,
+        column_names: Columns,
+        calc_rows: RowCalculator,
+        join_mode: JoinMode = JoinMode.SIMPLE,
+    ):
+        self.columns = column_names
+        self.calc_rows = calc_rows
+        self.join_mode = join_mode
+
+    def join_row(self, key: str, row_a: tuple, row_b: tuple) -> tuple:
+        match self.join_mode:
+            case JoinMode.SIMPLE:
+                return (key, *row_a, *row_b)
+            case JoinMode.CHANGE:
+                return (key, *row_a, *row_b, DiffRatio(row_a[0], row_b[0]))
+            case JoinMode.CHANGE_ONE_COLUMN:
+                return (key, row_a[0], row_b[0], DiffRatio(row_a[0], row_b[0]))
+
+    def join_columns(self, columns: Columns) -> Columns:
+        match self.join_mode:
+            case JoinMode.SIMPLE:
+                return (
+                    columns[0],
+                    *("Base " + x for x in columns[1:]),
+                    *("Head " + x for x in columns[1:]),
+                )
+            case JoinMode.CHANGE:
+                return (
+                    columns[0],
+                    *("Base " + x for x in columns[1:]),
+                    *("Head " + x for x in columns[1:]),
+                ) + ("Change:",)
+            case JoinMode.CHANGE_ONE_COLUMN:
+                return (
+                    columns[0],
+                    "Base " + columns[1],
+                    "Head " + columns[1],
+                    "Change:",
+                )
+
+    def join_tables(self, rows_a: Rows, rows_b: Rows) -> tuple[Columns, Rows]:
+        ncols = len(self.columns)
+
+        default = ("",) * (ncols - 1)
+        data_a = {x[0]: x[1:] for x in rows_a}
+        data_b = {x[0]: x[1:] for x in rows_b}
+
+        if len(data_a) != len(rows_a) or len(data_b) != len(rows_b):
+            raise ValueError("Duplicate keys")
+
+        # To preserve ordering, use A's keys as is and then add any in B that
+        # aren't in A
+        keys = list(data_a.keys()) + [k for k in data_b.keys() if k not in data_a]
+        rows = [
+            self.join_row(k, data_a.get(k, default), data_b.get(k, default))
+            for k in keys
+        ]
+        if self.join_mode in (JoinMode.CHANGE, JoinMode.CHANGE_ONE_COLUMN):
+            rows.sort(key=lambda row: abs(float(row[-1])), reverse=True)
+
+        columns = self.join_columns(self.columns)
+        return columns, rows
+
+    def get_table(
+        self, base_stats: Stats, head_stats: Stats | None = None
+    ) -> tuple[Columns, Rows]:
+        if head_stats is None:
+            rows = self.calc_rows(base_stats)
+            return self.columns, rows
         else:
-            basic += count
-    return basic, not_specialized, specialized
+            rows_a = self.calc_rows(base_stats)
+            rows_b = self.calc_rows(head_stats)
+            cols, rows = self.join_tables(rows_a, rows_b)
+            return cols, rows
 
-def print_title(name, level=2):
-    print("#"*level, name)
-    print()
 
 class Section:
+    """
+    A Section defines a section of the output document.
+    """
 
-    def __init__(self, title, level=2, summary=None):
+    def __init__(
+        self,
+        title: str = "",
+        summary: str = "",
+        part_iter=None,
+        comparative: bool = True,
+    ):
         self.title = title
-        self.level = level
-        if summary is None:
+        if not summary:
             self.summary = title.lower()
         else:
             self.summary = summary
+        if part_iter is None:
+            part_iter = []
+        if isinstance(part_iter, list):
 
-    def __enter__(self):
-        print_title(self.title, self.level)
-        print("<details>")
-        print("<summary>", self.summary, "</summary>")
-        print()
-        return self
-
-    def __exit__(*args):
-        print()
-        print("</details>")
-        print()
-
-def to_str(x):
-    if isinstance(x, int):
-        return format(x, ",d")
-    else:
-        return str(x)
-
-def emit_table(header, rows):
-    width = len(header)
-    header_line = "|"
-    under_line = "|"
-    for item in header:
-        under = "---"
-        if item.endswith(":"):
-            item = item[:-1]
-            under += ":"
-        header_line += item + " | "
-        under_line += under + "|"
-    print(header_line)
-    print(under_line)
-    for row in rows:
-        if width is not None and len(row) != width:
-            raise ValueError("Wrong number of elements in row '" + str(row) + "'")
-        print("|", " | ".join(to_str(i) for i in row), "|")
-    print()
-
-def calculate_execution_counts(opcode_stats, total):
-    counts = []
-    for i, opcode_stat in enumerate(opcode_stats):
-        if "execution_count" in opcode_stat:
-            count = opcode_stat['execution_count']
-            miss = 0
-            if "specializable" not in opcode_stat:
-                miss = opcode_stat.get("specialization.miss")
-            counts.append((count, opname[i], miss))
-    counts.sort(reverse=True)
-    cumulative = 0
-    rows = []
-    for (count, name, miss) in counts:
-        cumulative += count
-        if miss:
-            miss = format_ratio(miss, count)
+            def iter_parts(base_stats: Stats, head_stats: Stats | None):
+                yield from part_iter
+
+            self.part_iter = iter_parts
         else:
-            miss = ""
-        rows.append((name, count, format_ratio(count, total),
-                     format_ratio(cumulative, total), miss))
-    return rows
-
-def emit_execution_counts(opcode_stats, total):
-    with Section("Execution counts", summary="execution counts for all instructions"):
-        rows = calculate_execution_counts(opcode_stats, total)
-        emit_table(
-            ("Name", "Count:", "Self:", "Cumulative:", "Miss ratio:"),
-            rows
-        )
+            self.part_iter = part_iter
+        self.comparative = comparative
 
-def emit_comparative_execution_counts(
-    base_opcode_stats, base_total, head_opcode_stats, head_total
-):
-    with Section("Execution counts", summary="execution counts for all instructions"):
-        base_rows = calculate_execution_counts(base_opcode_stats, base_total)
-        head_rows = calculate_execution_counts(head_opcode_stats, head_total)
-        base_data = dict((x[0], x[1:]) for x in base_rows)
-        head_data = dict((x[0], x[1:]) for x in head_rows)
-        opcodes = set(base_data.keys()) | set(head_data.keys())
 
-        rows = []
-        default = [0, "0.0%", "0.0%", 0]
-        for opcode in opcodes:
-            base_entry = base_data.get(opcode, default)
-            head_entry = head_data.get(opcode, default)
-            if base_entry[0] == 0:
-                change = 1
+def calc_execution_count_table(prefix: str) -> RowCalculator:
+    def calc(stats: Stats) -> Rows:
+        opcode_stats = stats.get_opcode_stats(prefix)
+        counts = opcode_stats.get_execution_counts()
+        total = opcode_stats.get_total_execution_count()
+        cumulative = 0
+        rows: Rows = []
+        for opcode, (count, miss) in sorted(
+            counts.items(), key=itemgetter(1), reverse=True
+        ):
+            cumulative += count
+            if miss:
+                miss_val = Ratio(miss, count)
             else:
-                change = (head_entry[0] - base_entry[0]) / base_entry[0]
+                miss_val = None
             rows.append(
-                (opcode, base_entry[0], head_entry[0],
-                 f"{100*change:0.1f}%"))
+                (
+                    opcode,
+                    Count(count),
+                    Ratio(count, total),
+                    Ratio(cumulative, total),
+                    miss_val,
+                )
+            )
+        return rows
 
-        rows.sort(key=lambda x: -abs(float(x[-1][:-1])))
+    return calc
 
-        emit_table(
-            ("Name", "Base Count:", "Head Count:", "Change:"),
-            rows
-        )
 
-def get_defines():
-    spec_path = os.path.join(os.path.dirname(__file__), "../../Python/specialize.c")
-    with open(spec_path) as spec_src:
-        defines = parse_kinds(spec_src)
-    return defines
-
-def emit_specialization_stats(opcode_stats):
-    defines = get_defines()
-    with Section("Specialization stats", summary="specialization stats by family"):
-        for i, opcode_stat in enumerate(opcode_stats):
-            name = opname[i]
-            print_specialization_stats(name, opcode_stat, defines)
-
-def emit_comparative_specialization_stats(base_opcode_stats, head_opcode_stats):
-    defines = get_defines()
-    with Section("Specialization stats", summary="specialization stats by family"):
-        for i, (base_opcode_stat, head_opcode_stat) in enumerate(zip(base_opcode_stats, head_opcode_stats)):
-            name = opname[i]
-            print_comparative_specialization_stats(name, base_opcode_stat, head_opcode_stat, defines)
-
-def calculate_specialization_effectiveness(opcode_stats, total):
-    basic, not_specialized, specialized = categorized_counts(opcode_stats)
-    return [
-        ("Basic", basic, format_ratio(basic, total)),
-        ("Not specialized", not_specialized, format_ratio(not_specialized, total)),
-        ("Specialized", specialized, format_ratio(specialized, total)),
-    ]
-
-def emit_specialization_overview(opcode_stats, total):
-    with Section("Specialization effectiveness"):
-        rows = calculate_specialization_effectiveness(opcode_stats, total)
-        emit_table(("Instructions", "Count:", "Ratio:"), rows)
-        for title, field in (("Deferred", "specialization.deferred"), ("Misses", "specialization.miss")):
-            total = 0
-            counts = []
-            for i, opcode_stat in enumerate(opcode_stats):
-                # Avoid double counting misses
-                if title == "Misses" and "specializable" in opcode_stat:
-                    continue
-                value = opcode_stat.get(field, 0)
-                counts.append((value, opname[i]))
-                total += value
-            counts.sort(reverse=True)
-            if total:
-                with Section(f"{title} by instruction", 3):
-                    rows = [ (name, count, format_ratio(count, total)) for (count, name) in counts[:10] ]
-                    emit_table(("Name", "Count:", "Ratio:"), rows)
-
-def emit_comparative_specialization_overview(base_opcode_stats, base_total, head_opcode_stats, head_total):
-    with Section("Specialization effectiveness"):
-        base_rows = calculate_specialization_effectiveness(base_opcode_stats, base_total)
-        head_rows = calculate_specialization_effectiveness(head_opcode_stats, head_total)
-        emit_table(
-            ("Instructions", "Base Count:", "Base Ratio:", "Head Count:", "Head Ratio:"),
-            join_rows(base_rows, head_rows)
-        )
+def execution_count_section() -> Section:
+    return Section(
+        "Execution counts",
+        "execution counts for all instructions",
+        [
+            Table(
+                ("Name", "Count:", "Self:", "Cumulative:", "Miss ratio:"),
+                calc_execution_count_table("opcode"),
+                join_mode=JoinMode.CHANGE_ONE_COLUMN,
+            )
+        ],
+    )
 
-def get_stats_defines():
-    stats_path = os.path.join(os.path.dirname(__file__), "../../Include/pystats.h")
-    with open(stats_path) as stats_src:
-        defines = parse_kinds(stats_src, prefix="EVAL_CALL")
-    return defines
-
-def calculate_call_stats(stats):
-    defines = get_stats_defines()
-    total = 0
-    for key, value in stats.items():
-        if "Calls to" in key:
-            total += value
-            rows = []
-    for key, value in stats.items():
-        if "Calls to" in key:
-            rows.append((key, value, format_ratio(value, total)))
-        elif key.startswith("Calls "):
-            name, index = key[:-1].split("[")
-            index =  int(index)
-            label = name + " (" + pretty(defines[index][0]) + ")"
-            rows.append((label, value, format_ratio(value, total)))
-    for key, value in stats.items():
-        if key.startswith("Frame"):
-            rows.append((key, value, format_ratio(value, total)))
-    return rows
-
-def emit_call_stats(stats):
-    with Section("Call stats", summary="Inlined calls and frame stats"):
-        rows = calculate_call_stats(stats)
-        emit_table(("", "Count:", "Ratio:"), rows)
-
-def emit_comparative_call_stats(base_stats, head_stats):
-    with Section("Call stats", summary="Inlined calls and frame stats"):
-        base_rows = calculate_call_stats(base_stats)
-        head_rows = calculate_call_stats(head_stats)
-        rows = join_rows(base_rows, head_rows)
-        rows.sort(key=lambda x: -float(x[-1][:-1]))
-        emit_table(
-            ("", "Base Count:", "Base Ratio:", "Head Count:", "Head Ratio:"),
-            rows
-        )
 
-def calculate_object_stats(stats):
-    total_materializations = stats.get("Object new values")
-    total_allocations = stats.get("Object allocations") + stats.get("Object allocations from freelist")
-    total_increfs = stats.get("Object interpreter increfs") + stats.get("Object increfs")
-    total_decrefs = stats.get("Object interpreter decrefs") + stats.get("Object decrefs")
-    rows = []
-    for key, value in stats.items():
-        if key.startswith("Object"):
-            if "materialize" in key:
-                ratio = format_ratio(value, total_materializations)
-            elif "allocations" in key:
-                ratio = format_ratio(value, total_allocations)
-            elif "increfs"     in key:
-                ratio = format_ratio(value, total_increfs)
-            elif "decrefs"     in key:
-                ratio = format_ratio(value, total_decrefs)
-            else:
-                ratio = ""
-            label = key[6:].strip()
-            label = label[0].upper() + label[1:]
-            rows.append((label, value, ratio))
-    return rows
-
-def emit_object_stats(stats):
-    with Section("Object stats", summary="allocations, frees and dict materializatons"):
-        rows = calculate_object_stats(stats)
-        emit_table(("",  "Count:", "Ratio:"), rows)
-
-def emit_comparative_object_stats(base_stats, head_stats):
-    with Section("Object stats", summary="allocations, frees and dict materializatons"):
-        base_rows = calculate_object_stats(base_stats)
-        head_rows = calculate_object_stats(head_stats)
-        emit_table(("",  "Base Count:", "Base Ratio:", "Head Count:", "Head Ratio:"), join_rows(base_rows, head_rows))
-
-def get_total(opcode_stats):
-    total = 0
-    for opcode_stat in opcode_stats:
-        if "execution_count" in opcode_stat:
-            total += opcode_stat['execution_count']
-    return total
-
-def emit_pair_counts(opcode_stats, total):
-    pair_counts = []
-    for i, opcode_stat in enumerate(opcode_stats):
-        if i == 0:
-            continue
-        for key, value in opcode_stat.items():
-            if key.startswith("pair_count"):
-                x, _, _ = key[11:].partition("]")
-                if value:
-                    pair_counts.append((value, (i, int(x))))
-    with Section("Pair counts", summary="Pair counts for top 100 pairs"):
-        pair_counts.sort(reverse=True)
+def pair_count_section() -> Section:
+    def calc_pair_count_table(stats: Stats) -> Rows:
+        opcode_stats = stats.get_opcode_stats("opcode")
+        pair_counts = opcode_stats.get_pair_counts()
+        total = opcode_stats.get_total_execution_count()
+
         cumulative = 0
-        rows = []
-        for (count, pair) in itertools.islice(pair_counts, 100):
-            i, j = pair
+        rows: Rows = []
+        for (opcode_i, opcode_j), count in itertools.islice(
+            sorted(pair_counts.items(), key=itemgetter(1), reverse=True), 100
+        ):
             cumulative += count
-            rows.append((opname[i] + " " + opname[j], count, format_ratio(count, total),
-                         format_ratio(cumulative, total)))
-        emit_table(("Pair", "Count:", "Self:", "Cumulative:"),
-            rows
-        )
-    with Section("Predecessor/Successor Pairs", summary="Top 5 predecessors and successors of each opcode"):
-        predecessors = collections.defaultdict(collections.Counter)
-        successors = collections.defaultdict(collections.Counter)
-        total_predecessors = collections.Counter()
-        total_successors = collections.Counter()
-        for count, (first, second) in pair_counts:
-            if count:
-                predecessors[second][first] = count
-                successors[first][second] = count
-                total_predecessors[second] += count
-                total_successors[first] += count
-        for name, i in opmap.items():
-            total1 = total_predecessors[i]
-            total2 = total_successors[i]
-            if total1 == 0 and total2 == 0:
-                continue
-            pred_rows = succ_rows = ()
-            if total1:
-                pred_rows = [(opname[pred], count, f"{count/total1:.1%}")
-                             for (pred, count) in predecessors[i].most_common(5)]
-            if total2:
-                succ_rows = [(opname[succ], count, f"{count/total2:.1%}")
-                             for (succ, count) in successors[i].most_common(5)]
-            with Section(name, 3, f"Successors and predecessors for {name}"):
-                emit_table(("Predecessors", "Count:", "Percentage:"),
-                    pred_rows
+            rows.append(
+                (
+                    f"{opcode_i} {opcode_j}",
+                    Count(count),
+                    Ratio(count, total),
+                    Ratio(cumulative, total),
                 )
-                emit_table(("Successors", "Count:", "Percentage:"),
-                    succ_rows
+            )
+        return rows
+
+    return Section(
+        "Pair counts",
+        "Pair counts for top 100 pairs",
+        [
+            Table(
+                ("Pair", "Count:", "Self:", "Cumulative:"),
+                calc_pair_count_table,
+            )
+        ],
+        comparative=False,
+    )
+
+
+def pre_succ_pairs_section() -> Section:
+    def iter_pre_succ_pairs_tables(base_stats: Stats, head_stats: Stats | None = None):
+        assert head_stats is None
+
+        opcode_stats = base_stats.get_opcode_stats("opcode")
+
+        for opcode in opcode_stats.get_opcode_names():
+            predecessors = opcode_stats.get_predecessors(opcode)
+            successors = opcode_stats.get_successors(opcode)
+            predecessors_total = predecessors.total()
+            successors_total = successors.total()
+            if predecessors_total == 0 and successors_total == 0:
+                continue
+            pred_rows = [
+                (pred, Count(count), Ratio(count, predecessors_total))
+                for (pred, count) in predecessors.most_common(5)
+            ]
+            succ_rows = [
+                (succ, Count(count), Ratio(count, successors_total))
+                for (succ, count) in successors.most_common(5)
+            ]
+
+            yield Section(
+                opcode,
+                f"Successors and predecessors for {opcode}",
+                [
+                    Table(
+                        ("Predecessors", "Count:", "Percentage:"),
+                        lambda *_: pred_rows,  # type: ignore
+                    ),
+                    Table(
+                        ("Successors", "Count:", "Percentage:"),
+                        lambda *_: succ_rows,  # type: ignore
+                    ),
+                ],
+            )
+
+    return Section(
+        "Predecessor/Successor Pairs",
+        "Top 5 predecessors and successors of each opcode",
+        iter_pre_succ_pairs_tables,
+        comparative=False,
+    )
+
+
+def specialization_section() -> Section:
+    def calc_specialization_table(opcode: str) -> RowCalculator:
+        def calc(stats: Stats) -> Rows:
+            opcode_stats = stats.get_opcode_stats("opcode")
+            total = opcode_stats.get_specialization_total(opcode)
+            specialization_counts = opcode_stats.get_specialization_counts(opcode)
+
+            return [
+                (
+                    f"{label:>12}",
+                    Count(count),
+                    Ratio(count, total),
                 )
+                for label, count in specialization_counts.items()
+            ]
+
+        return calc
+
+    def calc_specialization_success_failure_table(name: str) -> RowCalculator:
+        def calc(stats: Stats) -> Rows:
+            values = stats.get_opcode_stats(
+                "opcode"
+            ).get_specialization_success_failure(name)
+            total = sum(values.values())
+            if total:
+                return [
+                    (label.capitalize(), Count(val), Ratio(val, total))
+                    for label, val in values.items()
+                ]
+            else:
+                return []
+
+        return calc
+
+    def calc_specialization_failure_kind_table(name: str) -> RowCalculator:
+        def calc(stats: Stats) -> Rows:
+            opcode_stats = stats.get_opcode_stats("opcode")
+            failures = opcode_stats.get_specialization_failure_kinds(name)
+            total = opcode_stats.get_specialization_failure_total(name)
+
+            return sorted(
+                [
+                    (label, Count(value), Ratio(value, total))
+                    for label, value in failures.items()
+                    if value
+                ],
+                key=itemgetter(1),
+                reverse=True,
+            )
 
-def output_single_stats(stats):
-    opcode_stats = extract_opcode_stats(stats)
-    total = get_total(opcode_stats)
-    emit_execution_counts(opcode_stats, total)
-    emit_pair_counts(opcode_stats, total)
-    emit_specialization_stats(opcode_stats)
-    emit_specialization_overview(opcode_stats, total)
-    emit_call_stats(stats)
-    emit_object_stats(stats)
-    with Section("Meta stats", summary="Meta statistics"):
-        emit_table(("", "Count:"), [('Number of data files', stats['__nfiles__'])])
+        return calc
 
+    def iter_specialization_tables(base_stats: Stats, head_stats: Stats | None = None):
+        opcode_base_stats = base_stats.get_opcode_stats("opcode")
+        names = opcode_base_stats.get_opcode_names()
+        if head_stats is not None:
+            opcode_head_stats = head_stats.get_opcode_stats("opcode")
+            names &= opcode_head_stats.get_opcode_names()  # type: ignore
+        else:
+            opcode_head_stats = None
 
-def output_comparative_stats(base_stats, head_stats):
-    base_opcode_stats = extract_opcode_stats(base_stats)
-    base_total = get_total(base_opcode_stats)
+        for opcode in sorted(names):
+            if not opcode_base_stats.is_specializable(opcode):
+                continue
+            if opcode_base_stats.get_specialization_total(opcode) == 0 and (
+                opcode_head_stats is None
+                or opcode_head_stats.get_specialization_total(opcode) == 0
+            ):
+                continue
+            yield Section(
+                opcode,
+                f"specialization stats for {opcode} family",
+                [
+                    Table(
+                        ("Kind", "Count:", "Ratio:"),
+                        calc_specialization_table(opcode),
+                        JoinMode.CHANGE,
+                    ),
+                    Table(
+                        ("", "Count:", "Ratio:"),
+                        calc_specialization_success_failure_table(opcode),
+                        JoinMode.CHANGE,
+                    ),
+                    Table(
+                        ("Failure kind", "Count:", "Ratio:"),
+                        calc_specialization_failure_kind_table(opcode),
+                        JoinMode.CHANGE,
+                    ),
+                ],
+            )
 
-    head_opcode_stats = extract_opcode_stats(head_stats)
-    head_total = get_total(head_opcode_stats)
+    return Section(
+        "Specialization stats",
+        "specialization stats by family",
+        iter_specialization_tables,
+    )
 
-    emit_comparative_execution_counts(
-        base_opcode_stats, base_total, head_opcode_stats, head_total
+
+def specialization_effectiveness_section() -> Section:
+    def calc_specialization_effectiveness_table(stats: Stats) -> Rows:
+        opcode_stats = stats.get_opcode_stats("opcode")
+        total = opcode_stats.get_total_execution_count()
+
+        (
+            basic,
+            specialized_hits,
+            specialized_misses,
+            not_specialized,
+        ) = opcode_stats.get_specialized_total_counts()
+
+        return [
+            ("Basic", Count(basic), Ratio(basic, total)),
+            (
+                "Not specialized",
+                Count(not_specialized),
+                Ratio(not_specialized, total),
+            ),
+            (
+                "Specialized hits",
+                Count(specialized_hits),
+                Ratio(specialized_hits, total),
+            ),
+            (
+                "Specialized misses",
+                Count(specialized_misses),
+                Ratio(specialized_misses, total),
+            ),
+        ]
+
+    def calc_deferred_by_table(stats: Stats) -> Rows:
+        opcode_stats = stats.get_opcode_stats("opcode")
+        deferred_counts = opcode_stats.get_deferred_counts()
+        total = sum(deferred_counts.values())
+        if total == 0:
+            return []
+
+        return [
+            (name, Count(value), Ratio(value, total))
+            for name, value in sorted(
+                deferred_counts.items(), key=itemgetter(1), reverse=True
+            )[:10]
+        ]
+
+    def calc_misses_by_table(stats: Stats) -> Rows:
+        opcode_stats = stats.get_opcode_stats("opcode")
+        misses_counts = opcode_stats.get_misses_counts()
+        total = sum(misses_counts.values())
+        if total == 0:
+            return []
+
+        return [
+            (name, Count(value), Ratio(value, total))
+            for name, value in sorted(
+                misses_counts.items(), key=itemgetter(1), reverse=True
+            )[:10]
+        ]
+
+    return Section(
+        "Specialization effectiveness",
+        "",
+        [
+            Table(
+                ("Instructions", "Count:", "Ratio:"),
+                calc_specialization_effectiveness_table,
+                JoinMode.CHANGE,
+            ),
+            Section(
+                "Deferred by instruction",
+                "",
+                [
+                    Table(
+                        ("Name", "Count:", "Ratio:"),
+                        calc_deferred_by_table,
+                        JoinMode.CHANGE,
+                    )
+                ],
+            ),
+            Section(
+                "Misses by instruction",
+                "",
+                [
+                    Table(
+                        ("Name", "Count:", "Ratio:"),
+                        calc_misses_by_table,
+                        JoinMode.CHANGE,
+                    )
+                ],
+            ),
+        ],
     )
-    emit_comparative_specialization_stats(
-        base_opcode_stats, head_opcode_stats
+
+
+def call_stats_section() -> Section:
+    def calc_call_stats_table(stats: Stats) -> Rows:
+        call_stats = stats.get_call_stats()
+        total = sum(v for k, v in call_stats.items() if "Calls to" in k)
+        return [
+            (key, Count(value), Ratio(value, total))
+            for key, value in call_stats.items()
+        ]
+
+    return Section(
+        "Call stats",
+        "Inlined calls and frame stats",
+        [
+            Table(
+                ("", "Count:", "Ratio:"),
+                calc_call_stats_table,
+                JoinMode.CHANGE,
+            )
+        ],
     )
-    emit_comparative_specialization_overview(
-        base_opcode_stats, base_total, head_opcode_stats, head_total
+
+
+def object_stats_section() -> Section:
+    def calc_object_stats_table(stats: Stats) -> Rows:
+        object_stats = stats.get_object_stats()
+        return [
+            (label, Count(value), Ratio(value, den))
+            for label, (value, den) in object_stats.items()
+        ]
+
+    return Section(
+        "Object stats",
+        "allocations, frees and dict materializatons",
+        [
+            Table(
+                ("", "Count:", "Ratio:"),
+                calc_object_stats_table,
+                JoinMode.CHANGE,
+            )
+        ],
     )
-    emit_comparative_call_stats(base_stats, head_stats)
-    emit_comparative_object_stats(base_stats, head_stats)
-
-def output_stats(inputs, json_output=None):
-    if len(inputs) == 1:
-        stats = gather_stats(inputs[0])
-        if json_output is not None:
-            json.dump(stats, json_output)
-        output_single_stats(stats)
-    elif len(inputs) == 2:
-        if json_output is not None:
-            raise ValueError(
-                "Can not output to JSON when there are multiple inputs"
+
+
+def gc_stats_section() -> Section:
+    def calc_gc_stats(stats: Stats) -> Rows:
+        gc_stats = stats.get_gc_stats()
+
+        return [
+            (
+                Count(i),
+                Count(gen["collections"]),
+                Count(gen["objects collected"]),
+                Count(gen["object visits"]),
             )
+            for (i, gen) in enumerate(gc_stats)
+        ]
+
+    return Section(
+        "GC stats",
+        "GC collections and effectiveness",
+        [
+            Table(
+                ("Generation:", "Collections:", "Objects collected:", "Object visits:"),
+                calc_gc_stats,
+            )
+        ],
+    )
 
-        base_stats = gather_stats(inputs[0])
-        head_stats = gather_stats(inputs[1])
-        output_comparative_stats(base_stats, head_stats)
 
-    print("---")
-    print("Stats gathered on:", date.today())
+def optimization_section() -> Section:
+    def calc_optimization_table(stats: Stats) -> Rows:
+        optimization_stats = stats.get_optimization_stats()
+
+        return [
+            (
+                label,
+                Count(value),
+                Ratio(value, den, percentage=label != "Uops executed"),
+            )
+            for label, (value, den) in optimization_stats.items()
+        ]
+
+    def calc_histogram_table(key: str, den: str) -> RowCalculator:
+        def calc(stats: Stats) -> Rows:
+            histogram = stats.get_histogram(key)
+            denominator = stats.get(den)
+
+            rows: Rows = []
+            last_non_zero = 0
+            for k, v in histogram:
+                if v != 0:
+                    last_non_zero = len(rows)
+                rows.append(
+                    (
+                        f"<= {k:,d}",
+                        Count(v),
+                        Ratio(v, denominator),
+                    )
+                )
+            # Don't include any zero entries at the end
+            rows = rows[: last_non_zero + 1]
+            return rows
+
+        return calc
+
+    def calc_unsupported_opcodes_table(stats: Stats) -> Rows:
+        unsupported_opcodes = stats.get_opcode_stats("unsupported_opcode")
+        return sorted(
+            [
+                (opcode, Count(count))
+                for opcode, count in unsupported_opcodes.get_opcode_counts().items()
+            ],
+            key=itemgetter(1),
+            reverse=True,
+        )
+
+    def iter_optimization_tables(base_stats: Stats, head_stats: Stats | None = None):
+        if not base_stats.get_optimization_stats() or (
+            head_stats is not None and not head_stats.get_optimization_stats()
+        ):
+            return
+
+        yield Table(("", "Count:", "Ratio:"), calc_optimization_table, JoinMode.CHANGE)
+        for name, den in [
+            ("Trace length", "Optimization traces created"),
+            ("Optimized trace length", "Optimization traces created"),
+            ("Trace run length", "Optimization traces executed"),
+        ]:
+            yield Section(
+                f"{name} histogram",
+                "",
+                [
+                    Table(
+                        ("Range", "Count:", "Ratio:"),
+                        calc_histogram_table(name, den),
+                        JoinMode.CHANGE,
+                    )
+                ],
+            )
+        yield Section(
+            "Uop execution stats",
+            "",
+            [
+                Table(
+                    ("Name", "Count:", "Self:", "Cumulative:", "Miss ratio:"),
+                    calc_execution_count_table("uops"),
+                    JoinMode.CHANGE_ONE_COLUMN,
+                )
+            ],
+        )
+        yield Section(
+            "Unsupported opcodes",
+            "",
+            [
+                Table(
+                    ("Opcode", "Count:"),
+                    calc_unsupported_opcodes_table,
+                    JoinMode.CHANGE,
+                )
+            ],
+        )
+
+    return Section(
+        "Optimization (Tier 2) stats",
+        "statistics about the Tier 2 optimizer",
+        iter_optimization_tables,
+    )
+
+
+def meta_stats_section() -> Section:
+    def calc_rows(stats: Stats) -> Rows:
+        return [("Number of data files", Count(stats.get("__nfiles__")))]
+
+    return Section(
+        "Meta stats",
+        "Meta statistics",
+        [Table(("", "Count:"), calc_rows, JoinMode.CHANGE)],
+    )
+
+
+LAYOUT = [
+    execution_count_section(),
+    pair_count_section(),
+    pre_succ_pairs_section(),
+    specialization_section(),
+    specialization_effectiveness_section(),
+    call_stats_section(),
+    object_stats_section(),
+    gc_stats_section(),
+    optimization_section(),
+    meta_stats_section(),
+]
+
+
+def output_markdown(
+    out: TextIO,
+    obj: Section | Table | list,
+    base_stats: Stats,
+    head_stats: Stats | None = None,
+    level: int = 2,
+) -> None:
+    def to_markdown(x):
+        if hasattr(x, "markdown"):
+            return x.markdown()
+        elif isinstance(x, str):
+            return x
+        elif x is None:
+            return ""
+        else:
+            raise TypeError(f"Can't convert {x} to markdown")
+
+    match obj:
+        case Section():
+            if obj.title:
+                print("#" * level, obj.title, file=out)
+                print(file=out)
+                print("<details>", file=out)
+                print("<summary>", obj.summary, "</summary>", file=out)
+                print(file=out)
+            if head_stats is not None and obj.comparative is False:
+                print("Not included in comparative output.\n")
+            else:
+                for part in obj.part_iter(base_stats, head_stats):
+                    output_markdown(out, part, base_stats, head_stats, level=level + 1)
+            print(file=out)
+            if obj.title:
+                print("</details>", file=out)
+                print(file=out)
+
+        case Table():
+            header, rows = obj.get_table(base_stats, head_stats)
+            if len(rows) == 0:
+                return
+
+            width = len(header)
+            header_line = "|"
+            under_line = "|"
+            for item in header:
+                under = "---"
+                if item.endswith(":"):
+                    item = item[:-1]
+                    under += ":"
+                header_line += item + " | "
+                under_line += under + "|"
+            print(header_line, file=out)
+            print(under_line, file=out)
+            for row in rows:
+                if len(row) != width:
+                    raise ValueError(
+                        "Wrong number of elements in row '" + str(row) + "'"
+                    )
+                print("|", " | ".join(to_markdown(i) for i in row), "|", file=out)
+            print(file=out)
+
+        case list():
+            for part in obj:
+                output_markdown(out, part, base_stats, head_stats, level=level)
+
+            print("---", file=out)
+            print("Stats gathered on:", date.today(), file=out)
+
+
+def output_stats(inputs: list[Path], json_output=TextIO | None):
+    match len(inputs):
+        case 1:
+            data = load_raw_data(Path(inputs[0]))
+            if json_output is not None:
+                save_raw_data(data, json_output)  # type: ignore
+            stats = Stats(data)
+            output_markdown(sys.stdout, LAYOUT, stats)
+        case 2:
+            if json_output is not None:
+                raise ValueError(
+                    "Can not output to JSON when there are multiple inputs"
+                )
+            base_data = load_raw_data(Path(inputs[0]))
+            head_data = load_raw_data(Path(inputs[1]))
+            base_stats = Stats(base_data)
+            head_stats = Stats(head_data)
+            output_markdown(sys.stdout, LAYOUT, base_stats, head_stats)
+
 
 def main():
     parser = argparse.ArgumentParser(description="Summarize pystats results")
@@ -631,14 +1187,14 @@ def main():
         If one source is provided, its stats are printed.
         If two sources are provided, comparative stats are printed.
         Default is {DEFAULT_DIR}.
-        """
+        """,
     )
 
     parser.add_argument(
         "--json-output",
         nargs="?",
         type=argparse.FileType("w"),
-        help="Output complete raw results to the given JSON file."
+        help="Output complete raw results to the given JSON file.",
     )
 
     args = parser.parse_args()
@@ -648,5 +1204,6 @@ def main():
 
     output_stats(args.inputs, json_output=args.json_output)
 
+
 if __name__ == "__main__":
     main()
diff --git a/Tools/ssl/multissltests.py b/Tools/ssl/multissltests.py
index c0fbee9ca6f98f..120e3883adc795 100755
--- a/Tools/ssl/multissltests.py
+++ b/Tools/ssl/multissltests.py
@@ -46,8 +46,9 @@
 ]
 
 OPENSSL_RECENT_VERSIONS = [
-    "1.1.1t",
-    "3.0.8"
+    "1.1.1w",
+    "3.0.11",
+    "3.1.3",
 ]
 
 LIBRESSL_OLD_VERSIONS = [
@@ -150,7 +151,10 @@ class AbstractBuilder(object):
     build_template = None
     depend_target = None
     install_target = 'install'
-    jobs = os.cpu_count()
+    if hasattr(os, 'process_cpu_count'):
+        jobs = os.process_cpu_count()
+    else:
+        jobs = os.cpu_count()
 
     module_files = (
         os.path.join(PYTHONROOT, "Modules/_ssl.c"),
diff --git a/Tools/unicode/dawg.py b/Tools/unicode/dawg.py
new file mode 100644
index 00000000000000..b74d602f6e1d79
--- /dev/null
+++ b/Tools/unicode/dawg.py
@@ -0,0 +1,533 @@
+# Original Algorithm:
+# By Steve Hanov, 2011. Released to the public domain.
+# Please see http://stevehanov.ca/blog/index.php?id=115 for the accompanying article.
+#
+# Adapted for PyPy/CPython by Carl Friedrich Bolz-Tereick
+#
+# Based on Daciuk, Jan, et al. "Incremental construction of minimal acyclic finite-state automata."
+# Computational linguistics 26.1 (2000): 3-16.
+#
+# Updated 2014 to use DAWG as a mapping; see
+# Kowaltowski, T.; CL. Lucchesi (1993), "Applications of finite automata representing large vocabularies",
+# Software-Practice and Experience 1993
+
+from collections import defaultdict
+from functools import cached_property
+
+
+# This class represents a node in the directed acyclic word graph (DAWG). It
+# has a list of edges to other nodes. It has functions for testing whether it
+# is equivalent to another node. Nodes are equivalent if they have identical
+# edges, and each identical edge leads to identical states. The __hash__ and
+# __eq__ functions allow it to be used as a key in a python dictionary.
+
+
+class DawgNode:
+
+    def __init__(self, dawg):
+        self.id = dawg.next_id
+        dawg.next_id += 1
+        self.final = False
+        self.edges = {}
+
+        self.linear_edges = None # later: list of (string, next_state)
+
+    def __str__(self):
+        if self.final:
+            arr = ["1"]
+        else:
+            arr = ["0"]
+
+        for (label, node) in sorted(self.edges.items()):
+            arr.append(label)
+            arr.append(str(node.id))
+
+        return "_".join(arr)
+    __repr__ = __str__
+
+    def _as_tuple(self):
+        edges = sorted(self.edges.items())
+        edge_tuple = tuple((label, node.id) for label, node in edges)
+        return (self.final, edge_tuple)
+
+    def __hash__(self):
+        return hash(self._as_tuple())
+
+    def __eq__(self, other):
+        return self._as_tuple() == other._as_tuple()
+
+    @cached_property
+    def num_reachable_linear(self):
+        # returns the number of different paths to final nodes reachable from
+        # this one
+
+        count = 0
+        # staying at self counts as a path if self is final
+        if self.final:
+            count += 1
+        for label, node in self.linear_edges:
+            count += node.num_reachable_linear
+
+        return count
+
+
+class Dawg:
+    def __init__(self):
+        self.previous_word = ""
+        self.next_id = 0
+        self.root = DawgNode(self)
+
+        # Here is a list of nodes that have not been checked for duplication.
+        self.unchecked_nodes = []
+
+        # To deduplicate, maintain a dictionary with
+        # minimized_nodes[canonical_node] is canonical_node.
+        # Based on __hash__ and __eq__, minimized_nodes[n] is the
+        # canonical node equal to n.
+        # In other words, self.minimized_nodes[x] == x for all nodes found in
+        # the dict.
+        self.minimized_nodes = {}
+
+        # word: value mapping
+        self.data = {}
+        # value: word mapping
+        self.inverse = {}
+
+    def insert(self, word, value):
+        if not all(0 <= ord(c) < 128 for c in word):
+            raise ValueError("Use 7-bit ASCII characters only")
+        if word <= self.previous_word:
+            raise ValueError("Error: Words must be inserted in alphabetical order.")
+        if value in self.inverse:
+            raise ValueError(f"value {value} is duplicate, got it for word {self.inverse[value]} and now {word}")
+
+        # find common prefix between word and previous word
+        common_prefix = 0
+        for i in range(min(len(word), len(self.previous_word))):
+            if word[i] != self.previous_word[i]:
+                break
+            common_prefix += 1
+
+        # Check the unchecked_nodes for redundant nodes, proceeding from last
+        # one down to the common prefix size. Then truncate the list at that
+        # point.
+        self._minimize(common_prefix)
+
+        self.data[word] = value
+        self.inverse[value] = word
+
+        # add the suffix, starting from the correct node mid-way through the
+        # graph
+        if len(self.unchecked_nodes) == 0:
+            node = self.root
+        else:
+            node = self.unchecked_nodes[-1][2]
+
+        for letter in word[common_prefix:]:
+            next_node = DawgNode(self)
+            node.edges[letter] = next_node
+            self.unchecked_nodes.append((node, letter, next_node))
+            node = next_node
+
+        node.final = True
+        self.previous_word = word
+
+    def finish(self):
+        if not self.data:
+            raise ValueError("need at least one word in the dawg")
+        # minimize all unchecked_nodes
+        self._minimize(0)
+
+        self._linearize_edges()
+
+        topoorder, linear_data, inverse = self._topological_order()
+        return self.compute_packed(topoorder), linear_data, inverse
+
+    def _minimize(self, down_to):
+        # proceed from the leaf up to a certain point
+        for i in range(len(self.unchecked_nodes) - 1, down_to - 1, -1):
+            (parent, letter, child) = self.unchecked_nodes[i]
+            if child in self.minimized_nodes:
+                # replace the child with the previously encountered one
+                parent.edges[letter] = self.minimized_nodes[child]
+            else:
+                # add the state to the minimized nodes.
+                self.minimized_nodes[child] = child
+            self.unchecked_nodes.pop()
+
+    def _lookup(self, word):
+        """ Return an integer 0 <= k < number of strings in dawg
+        where word is the kth successful traversal of the dawg. """
+        node = self.root
+        skipped = 0  # keep track of number of final nodes that we skipped
+        index = 0
+        while index < len(word):
+            for label, child in node.linear_edges:
+                if word[index] == label[0]:
+                    if word[index:index + len(label)] == label:
+                        if node.final:
+                            skipped += 1
+                        index += len(label)
+                        node = child
+                        break
+                    else:
+                        return None
+                skipped += child.num_reachable_linear
+            else:
+                return None
+        return skipped
+
+    def enum_all_nodes(self):
+        stack = [self.root]
+        done = set()
+        while stack:
+            node = stack.pop()
+            if node.id in done:
+                continue
+            yield node
+            done.add(node.id)
+            for label, child in sorted(node.edges.items()):
+                stack.append(child)
+
+    def prettyprint(self):
+        for node in sorted(self.enum_all_nodes(), key=lambda e: e.id):
+            s_final = " final" if node.final else ""
+            print(f"{node.id}: ({node}) {s_final}")
+            for label, child in sorted(node.edges.items()):
+                print(f"    {label} goto {child.id}")
+
+    def _inverse_lookup(self, number):
+        assert 0, "not working in the current form, but keep it as the pure python version of compact lookup"
+        result = []
+        node = self.root
+        while 1:
+            if node.final:
+                if pos == 0:
+                    return "".join(result)
+                pos -= 1
+            for label, child in sorted(node.edges.items()):
+                nextpos = pos - child.num_reachable_linear
+                if nextpos < 0:
+                    result.append(label)
+                    node = child
+                    break
+                else:
+                    pos = nextpos
+            else:
+                assert 0
+
+    def _linearize_edges(self):
+        # compute "linear" edges. the idea is that long chains of edges without
+        # any of the intermediate states being final or any extra incoming or
+        # outgoing edges can be represented by having removing them, and
+        # instead using longer strings as edge labels (instead of single
+        # characters)
+        incoming = defaultdict(list)
+        nodes = sorted(self.enum_all_nodes(), key=lambda e: e.id)
+        for node in nodes:
+            for label, child in sorted(node.edges.items()):
+                incoming[child].append(node)
+        for node in nodes:
+            node.linear_edges = []
+            for label, child in sorted(node.edges.items()):
+                s = [label]
+                while len(child.edges) == 1 and len(incoming[child]) == 1 and not child.final:
+                    (c, child), = child.edges.items()
+                    s.append(c)
+                node.linear_edges.append((''.join(s), child))
+
+    def _topological_order(self):
+        # compute reachable linear nodes, and the set of incoming edges for each node
+        order = []
+        stack = [self.root]
+        seen = set()
+        while stack:
+            # depth first traversal
+            node = stack.pop()
+            if node.id in seen:
+                continue
+            seen.add(node.id)
+            order.append(node)
+            for label, child in node.linear_edges:
+                stack.append(child)
+
+        # do a (slightly bad) topological sort
+        incoming = defaultdict(set)
+        for node in order:
+            for label, child in node.linear_edges:
+                incoming[child].add((label, node))
+        no_incoming = [order[0]]
+        topoorder = []
+        positions = {}
+        while no_incoming:
+            node = no_incoming.pop()
+            topoorder.append(node)
+            positions[node] = len(topoorder)
+            # use "reversed" to make sure that the linear_edges get reorderd
+            # from their alphabetical order as little as necessary (no_incoming
+            # is LIFO)
+            for label, child in reversed(node.linear_edges):
+                incoming[child].discard((label, node))
+                if not incoming[child]:
+                    no_incoming.append(child)
+                    del incoming[child]
+        # check result
+        assert set(topoorder) == set(order)
+        assert len(set(topoorder)) == len(topoorder)
+
+        for node in order:
+            node.linear_edges.sort(key=lambda element: positions[element[1]])
+
+        for node in order:
+            for label, child in node.linear_edges:
+                assert positions[child] > positions[node]
+        # number the nodes. afterwards every input string in the set has a
+        # unique number in the 0 <= number < len(data). We then put the data in
+        # self.data into a linear list using these numbers as indexes.
+        topoorder[0].num_reachable_linear
+        linear_data = [None] * len(self.data)
+        inverse = {} # maps value back to index
+        for word, value in self.data.items():
+            index = self._lookup(word)
+            linear_data[index] = value
+            inverse[value] = index
+
+        return topoorder, linear_data, inverse
+
+    def compute_packed(self, order):
+        def compute_chunk(node, offsets):
+            """ compute the packed node/edge data for a node. result is a
+            list of bytes as long as order. the jump distance calculations use
+            the offsets dictionary to know where in the final big output
+            bytestring the individual nodes will end up. """
+            result = bytearray()
+            offset = offsets[node]
+            encode_varint_unsigned(number_add_bits(node.num_reachable_linear, node.final), result)
+            if len(node.linear_edges) == 0:
+                assert node.final
+                encode_varint_unsigned(0, result) # add a 0 saying "done"
+            prev_child_offset = offset + len(result)
+            for edgeindex, (label, targetnode) in enumerate(node.linear_edges):
+                label = label.encode('ascii')
+                child_offset = offsets[targetnode]
+                child_offset_difference = child_offset - prev_child_offset
+
+                info = number_add_bits(child_offset_difference, len(label) == 1, edgeindex == len(node.linear_edges) - 1)
+                if edgeindex == 0:
+                    assert info != 0
+                encode_varint_unsigned(info, result)
+                prev_child_offset = child_offset
+                if len(label) > 1:
+                    encode_varint_unsigned(len(label), result)
+                result.extend(label)
+            return result
+
+        def compute_new_offsets(chunks, offsets):
+            """ Given a list of chunks, compute the new offsets (by adding the
+            chunk lengths together). Also check if we cannot shrink the output
+            further because none of the node offsets are smaller now. if that's
+            the case return None. """
+            new_offsets = {}
+            curr_offset = 0
+            should_continue = False
+            for node, result in zip(order, chunks):
+                if curr_offset < offsets[node]:
+                    # the new offset is below the current assumption, this
+                    # means we can shrink the output more
+                    should_continue = True
+                new_offsets[node] = curr_offset
+                curr_offset += len(result)
+            if not should_continue:
+                return None
+            return new_offsets
+
+        # assign initial offsets to every node
+        offsets = {}
+        for i, node in enumerate(order):
+            # we don't know position of the edge yet, just use something big as
+            # the starting position. we'll have to do further iterations anyway,
+            # but the size is at least a lower limit then
+            offsets[node] = i * 2 ** 30
+
+
+        # due to the variable integer width encoding of edge targets we need to
+        # run this to fixpoint. in the process we shrink the output more and
+        # more until we can't any more. at any point we can stop and use the
+        # output, but we might need padding zero bytes when joining the chunks
+        # to have the correct jump distances
+        last_offsets = None
+        while 1:
+            chunks = [compute_chunk(node, offsets) for node in order]
+            last_offsets = offsets
+            offsets = compute_new_offsets(chunks, offsets)
+            if offsets is None: # couldn't shrink
+                break
+
+        # build the final packed string
+        total_result = bytearray()
+        for node, result in zip(order, chunks):
+            node_offset = last_offsets[node]
+            if node_offset > len(total_result):
+                # need to pad to get the offsets correct
+                padding = b"\x00" * (node_offset - len(total_result))
+                total_result.extend(padding)
+            assert node_offset == len(total_result)
+            total_result.extend(result)
+        return bytes(total_result)
+
+
+# ______________________________________________________________________
+# the following functions operate on the packed representation
+
+def number_add_bits(x, *bits):
+    for bit in bits:
+        assert bit == 0 or bit == 1
+        x = (x << 1) | bit
+    return x
+
+def encode_varint_unsigned(i, res):
+    # https://en.wikipedia.org/wiki/LEB128 unsigned variant
+    more = True
+    startlen = len(res)
+    if i < 0:
+        raise ValueError("only positive numbers supported", i)
+    while more:
+        lowest7bits = i & 0b1111111
+        i >>= 7
+        if i == 0:
+            more = False
+        else:
+            lowest7bits |= 0b10000000
+        res.append(lowest7bits)
+    return len(res) - startlen
+
+def number_split_bits(x, n, acc=()):
+    if n == 1:
+        return x >> 1, x & 1
+    if n == 2:
+        return x >> 2, (x >> 1) & 1, x & 1
+    assert 0, "implement me!"
+
+def decode_varint_unsigned(b, index=0):
+    res = 0
+    shift = 0
+    while True:
+        byte = b[index]
+        res = res | ((byte & 0b1111111) << shift)
+        index += 1
+        shift += 7
+        if not (byte & 0b10000000):
+            return res, index
+
+def decode_node(packed, node):
+    x, node = decode_varint_unsigned(packed, node)
+    node_count, final = number_split_bits(x, 1)
+    return node_count, final, node
+
+def decode_edge(packed, edgeindex, prev_child_offset, offset):
+    x, offset = decode_varint_unsigned(packed, offset)
+    if x == 0 and edgeindex == 0:
+        raise KeyError # trying to decode past a final node
+    child_offset_difference, len1, last_edge = number_split_bits(x, 2)
+    child_offset = prev_child_offset + child_offset_difference
+    if len1:
+        size = 1
+    else:
+        size, offset = decode_varint_unsigned(packed, offset)
+    return child_offset, last_edge, size, offset
+
+def _match_edge(packed, s, size, node_offset, stringpos):
+    if size > 1 and stringpos + size > len(s):
+        # past the end of the string, can't match
+        return False
+    for i in range(size):
+        if packed[node_offset + i] != s[stringpos + i]:
+            # if a subsequent char of an edge doesn't match, the word isn't in
+            # the dawg
+            if i > 0:
+                raise KeyError
+            return False
+    return True
+
+def lookup(packed, data, s):
+    return data[_lookup(packed, s)]
+
+def _lookup(packed, s):
+    stringpos = 0
+    node_offset = 0
+    skipped = 0  # keep track of number of final nodes that we skipped
+    false = False
+    while stringpos < len(s):
+        #print(f"{node_offset=} {stringpos=}")
+        _, final, edge_offset = decode_node(packed, node_offset)
+        prev_child_offset = edge_offset
+        edgeindex = 0
+        while 1:
+            child_offset, last_edge, size, edgelabel_chars_offset = decode_edge(packed, edgeindex, prev_child_offset, edge_offset)
+            #print(f"    {edge_offset=} {child_offset=} {last_edge=} {size=} {edgelabel_chars_offset=}")
+            edgeindex += 1
+            prev_child_offset = child_offset
+            if _match_edge(packed, s, size, edgelabel_chars_offset, stringpos):
+                # match
+                if final:
+                    skipped += 1
+                stringpos += size
+                node_offset = child_offset
+                break
+            if last_edge:
+                raise KeyError
+            descendant_count, _, _ = decode_node(packed, child_offset)
+            skipped += descendant_count
+            edge_offset = edgelabel_chars_offset + size
+    _, final, _ = decode_node(packed, node_offset)
+    if final:
+        return skipped
+    raise KeyError
+
+def inverse_lookup(packed, inverse, x):
+    pos = inverse[x]
+    return _inverse_lookup(packed, pos)
+
+def _inverse_lookup(packed, pos):
+    result = bytearray()
+    node_offset = 0
+    while 1:
+        node_count, final, edge_offset = decode_node(packed, node_offset)
+        if final:
+            if pos == 0:
+                return bytes(result)
+            pos -= 1
+        prev_child_offset = edge_offset
+        edgeindex = 0
+        while 1:
+            child_offset, last_edge, size, edgelabel_chars_offset = decode_edge(packed, edgeindex, prev_child_offset, edge_offset)
+            edgeindex += 1
+            prev_child_offset = child_offset
+            descendant_count, _, _ = decode_node(packed, child_offset)
+            nextpos = pos - descendant_count
+            if nextpos < 0:
+                assert edgelabel_chars_offset >= 0
+                result.extend(packed[edgelabel_chars_offset: edgelabel_chars_offset + size])
+                node_offset = child_offset
+                break
+            elif not last_edge:
+                pos = nextpos
+                edge_offset = edgelabel_chars_offset + size
+            else:
+                raise KeyError
+        else:
+            raise KeyError
+
+
+def build_compression_dawg(ucdata):
+    d = Dawg()
+    ucdata.sort()
+    for name, value in ucdata:
+        d.insert(name, value)
+    packed, pos_to_code, reversedict = d.finish()
+    print("size of dawg [KiB]", round(len(packed) / 1024, 2))
+    # check that lookup and inverse_lookup work correctly on the input data
+    for name, value in ucdata:
+        assert lookup(packed, pos_to_code, name.encode('ascii')) == value
+        assert inverse_lookup(packed, reversedict, value) == name.encode('ascii')
+    return packed, pos_to_code
diff --git a/Tools/unicode/genmap_japanese.py b/Tools/unicode/genmap_japanese.py
index 21de37b62bced0..838317fa54175e 100644
--- a/Tools/unicode/genmap_japanese.py
+++ b/Tools/unicode/genmap_japanese.py
@@ -2,7 +2,7 @@
 # genmap_ja_codecs.py: Japanese Codecs Map Generator
 #
 # Original Author:  Hye-Shik Chang <perky@FreeBSD.org>
-# Modified Author:  Dong-hee Na <donghee.na92@gmail.com>
+# Modified Author:  Donghee Na <donghee.na92@gmail.com>
 #
 import os
 
diff --git a/Tools/unicode/genmap_korean.py b/Tools/unicode/genmap_korean.py
index 4b94a6c43e5382..4432a3601b7e3b 100644
--- a/Tools/unicode/genmap_korean.py
+++ b/Tools/unicode/genmap_korean.py
@@ -2,7 +2,7 @@
 # genmap_korean.py: Korean Codecs Map Generator
 #
 # Original Author:  Hye-Shik Chang <perky@FreeBSD.org>
-# Modified Author:  Dong-hee Na <donghee.na92@gmail.com>
+# Modified Author:  Donghee Na <donghee.na92@gmail.com>
 #
 import os
 
diff --git a/Tools/unicode/genmap_schinese.py b/Tools/unicode/genmap_schinese.py
index 647c0333ed2728..862f1def71d122 100644
--- a/Tools/unicode/genmap_schinese.py
+++ b/Tools/unicode/genmap_schinese.py
@@ -2,7 +2,7 @@
 # genmap_schinese.py: Simplified Chinese Codecs Map Generator
 #
 # Original Author:  Hye-Shik Chang <perky@FreeBSD.org>
-# Modified Author:  Dong-hee Na <donghee.na92@gmail.com>
+# Modified Author:  Donghee Na <donghee.na92@gmail.com>
 #
 import os
 import re
diff --git a/Tools/unicode/genmap_support.py b/Tools/unicode/genmap_support.py
index 5e1d9ee77b0002..4649bc3b7125fe 100644
--- a/Tools/unicode/genmap_support.py
+++ b/Tools/unicode/genmap_support.py
@@ -2,7 +2,7 @@
 # genmap_support.py: Multibyte Codec Map Generator
 #
 # Original Author:  Hye-Shik Chang <perky@FreeBSD.org>
-# Modified Author:  Dong-hee Na <donghee.na92@gmail.com>
+# Modified Author:  Donghee Na <donghee.na92@gmail.com>
 #
 
 
diff --git a/Tools/unicode/makeunicodedata.py b/Tools/unicode/makeunicodedata.py
index 034642db06e48b..a5ac09eb96f19a 100644
--- a/Tools/unicode/makeunicodedata.py
+++ b/Tools/unicode/makeunicodedata.py
@@ -44,7 +44,7 @@
 #   * Doc/library/stdtypes.rst, and
 #   * Doc/library/unicodedata.rst
 #   * Doc/reference/lexical_analysis.rst (two occurrences)
-UNIDATA_VERSION = "15.0.0"
+UNIDATA_VERSION = "15.1.0"
 UNICODE_DATA = "UnicodeData%s.txt"
 COMPOSITION_EXCLUSIONS = "CompositionExclusions%s.txt"
 EASTASIAN_WIDTH = "EastAsianWidth%s.txt"
@@ -101,15 +101,16 @@
 
 # these ranges need to match unicodedata.c:is_unified_ideograph
 cjk_ranges = [
-    ('3400', '4DBF'),
-    ('4E00', '9FFF'),
-    ('20000', '2A6DF'),
-    ('2A700', '2B739'),
-    ('2B740', '2B81D'),
-    ('2B820', '2CEA1'),
-    ('2CEB0', '2EBE0'),
-    ('30000', '3134A'),
-    ('31350', '323AF'),
+    ('3400', '4DBF'),    # CJK Ideograph Extension A CJK
+    ('4E00', '9FFF'),    # CJK Ideograph
+    ('20000', '2A6DF'),  # CJK Ideograph Extension B
+    ('2A700', '2B739'),  # CJK Ideograph Extension C
+    ('2B740', '2B81D'),  # CJK Ideograph Extension D
+    ('2B820', '2CEA1'),  # CJK Ideograph Extension E
+    ('2CEB0', '2EBE0'),  # CJK Ideograph Extension F
+    ('2EBF0', '2EE5D'),  # CJK Ideograph Extension I
+    ('30000', '3134A'),  # CJK Ideograph Extension G
+    ('31350', '323AF'),  # CJK Ideograph Extension H
 ]
 
 
@@ -622,120 +623,12 @@ def makeunicodetype(unicode, trace):
 # unicode name database
 
 def makeunicodename(unicode, trace):
+    from dawg import build_compression_dawg
 
     FILE = "Modules/unicodename_db.h"
 
     print("--- Preparing", FILE, "...")
 
-    # collect names
-    names = [None] * len(unicode.chars)
-
-    for char in unicode.chars:
-        record = unicode.table[char]
-        if record:
-            name = record.name.strip()
-            if name and name[0] != "<":
-                names[char] = name + chr(0)
-
-    print(len([n for n in names if n is not None]), "distinct names")
-
-    # collect unique words from names (note that we differ between
-    # words inside a sentence, and words ending a sentence.  the
-    # latter includes the trailing null byte.
-
-    words = {}
-    n = b = 0
-    for char in unicode.chars:
-        name = names[char]
-        if name:
-            w = name.split()
-            b = b + len(name)
-            n = n + len(w)
-            for w in w:
-                l = words.get(w)
-                if l:
-                    l.append(None)
-                else:
-                    words[w] = [len(words)]
-
-    print(n, "words in text;", b, "bytes")
-
-    wordlist = list(words.items())
-
-    # sort on falling frequency, then by name
-    def word_key(a):
-        aword, alist = a
-        return -len(alist), aword
-    wordlist.sort(key=word_key)
-
-    # figure out how many phrasebook escapes we need
-    escapes = 0
-    while escapes * 256 < len(wordlist):
-        escapes = escapes + 1
-    print(escapes, "escapes")
-
-    short = 256 - escapes
-
-    assert short > 0
-
-    print(short, "short indexes in lexicon")
-
-    # statistics
-    n = 0
-    for i in range(short):
-        n = n + len(wordlist[i][1])
-    print(n, "short indexes in phrasebook")
-
-    # pick the most commonly used words, and sort the rest on falling
-    # length (to maximize overlap)
-
-    wordlist, wordtail = wordlist[:short], wordlist[short:]
-    wordtail.sort(key=lambda a: a[0], reverse=True)
-    wordlist.extend(wordtail)
-
-    # generate lexicon from words
-
-    lexicon_offset = [0]
-    lexicon = ""
-    words = {}
-
-    # build a lexicon string
-    offset = 0
-    for w, x in wordlist:
-        # encoding: bit 7 indicates last character in word (chr(128)
-        # indicates the last character in an entire string)
-        ww = w[:-1] + chr(ord(w[-1])+128)
-        # reuse string tails, when possible
-        o = lexicon.find(ww)
-        if o < 0:
-            o = offset
-            lexicon = lexicon + ww
-            offset = offset + len(w)
-        words[w] = len(lexicon_offset)
-        lexicon_offset.append(o)
-
-    lexicon = list(map(ord, lexicon))
-
-    # generate phrasebook from names and lexicon
-    phrasebook = [0]
-    phrasebook_offset = [0] * len(unicode.chars)
-    for char in unicode.chars:
-        name = names[char]
-        if name:
-            w = name.split()
-            phrasebook_offset[char] = len(phrasebook)
-            for w in w:
-                i = words[w]
-                if i < short:
-                    phrasebook.append(i)
-                else:
-                    # store as two bytes
-                    phrasebook.append((i>>8) + short)
-                    phrasebook.append(i&255)
-
-    assert getsize(phrasebook) == 1
-
-    #
     # unicode name hash table
 
     # extract names
@@ -747,12 +640,6 @@ def word_key(a):
             if name and name[0] != "<":
                 data.append((name, char))
 
-    # the magic number 47 was chosen to minimize the number of
-    # collisions on the current data set.  if you like, change it
-    # and see what happens...
-
-    codehash = Hash("code", data, 47)
-
     print("--- Writing", FILE, "...")
 
     with open(FILE, "w") as fp:
@@ -761,24 +648,22 @@ def word_key(a):
         fprint("/* this file was generated by %s %s */" % (SCRIPT, VERSION))
         fprint()
         fprint("#define NAME_MAXLEN", 256)
+        assert max(len(x) for x in data) < 256
         fprint()
-        fprint("/* lexicon */")
-        Array("lexicon", lexicon).dump(fp, trace)
-        Array("lexicon_offset", lexicon_offset).dump(fp, trace)
-
-        # split decomposition index table
-        offset1, offset2, shift = splitbins(phrasebook_offset, trace)
-
-        fprint("/* code->name phrasebook */")
-        fprint("#define phrasebook_shift", shift)
-        fprint("#define phrasebook_short", short)
-
-        Array("phrasebook", phrasebook).dump(fp, trace)
-        Array("phrasebook_offset1", offset1).dump(fp, trace)
-        Array("phrasebook_offset2", offset2).dump(fp, trace)
 
         fprint("/* name->code dictionary */")
-        codehash.dump(fp, trace)
+        packed_dawg, pos_to_codepoint = build_compression_dawg(data)
+        notfound = len(pos_to_codepoint)
+        inverse_list = [notfound] * len(unicode.chars)
+        for pos, codepoint in enumerate(pos_to_codepoint):
+            inverse_list[codepoint] = pos
+        Array("packed_name_dawg", list(packed_dawg)).dump(fp, trace)
+        Array("dawg_pos_to_codepoint", pos_to_codepoint).dump(fp, trace)
+        index1, index2, shift = splitbins(inverse_list, trace)
+        fprint("#define DAWG_CODEPOINT_TO_POS_SHIFT", shift)
+        fprint("#define DAWG_CODEPOINT_TO_POS_NOTFOUND", notfound)
+        Array("dawg_codepoint_to_pos_index1", index1).dump(fp, trace)
+        Array("dawg_codepoint_to_pos_index2", index2).dump(fp, trace)
 
         fprint()
         fprint('static const unsigned int aliases_start = %#x;' %
@@ -1105,11 +990,15 @@ def __init__(self, version, cjk_check=True):
                 table[i].east_asian_width = widths[i]
         self.widths = widths
 
-        for char, (p,) in UcdFile(DERIVED_CORE_PROPERTIES, version).expanded():
+        for char, (propname, *propinfo) in UcdFile(DERIVED_CORE_PROPERTIES, version).expanded():
+            if propinfo:
+                # this is not a binary property, ignore it
+                continue
+
             if table[char]:
                 # Some properties (e.g. Default_Ignorable_Code_Point)
                 # apply to unassigned code points; ignore them
-                table[char].binary_properties.add(p)
+                table[char].binary_properties.add(propname)
 
         for char_range, value in UcdFile(LINE_BREAK, version):
             if value not in MANDATORY_LINE_BREAKS:
@@ -1183,94 +1072,6 @@ def uselatin1(self):
         self.chars = list(range(256))
 
 
-# hash table tools
-
-# this is a straight-forward reimplementation of Python's built-in
-# dictionary type, using a static data structure, and a custom string
-# hash algorithm.
-
-def myhash(s, magic):
-    h = 0
-    for c in map(ord, s.upper()):
-        h = (h * magic) + c
-        ix = h & 0xff000000
-        if ix:
-            h = (h ^ ((ix>>24) & 0xff)) & 0x00ffffff
-    return h
-
-
-SIZES = [
-    (4,3), (8,3), (16,3), (32,5), (64,3), (128,3), (256,29), (512,17),
-    (1024,9), (2048,5), (4096,83), (8192,27), (16384,43), (32768,3),
-    (65536,45), (131072,9), (262144,39), (524288,39), (1048576,9),
-    (2097152,5), (4194304,3), (8388608,33), (16777216,27)
-]
-
-
-class Hash:
-    def __init__(self, name, data, magic):
-        # turn a (key, value) list into a static hash table structure
-
-        # determine table size
-        for size, poly in SIZES:
-            if size > len(data):
-                poly = size + poly
-                break
-        else:
-            raise AssertionError("ran out of polynomials")
-
-        print(size, "slots in hash table")
-
-        table = [None] * size
-
-        mask = size-1
-
-        n = 0
-
-        hash = myhash
-
-        # initialize hash table
-        for key, value in data:
-            h = hash(key, magic)
-            i = (~h) & mask
-            v = table[i]
-            if v is None:
-                table[i] = value
-                continue
-            incr = (h ^ (h >> 3)) & mask
-            if not incr:
-                incr = mask
-            while 1:
-                n = n + 1
-                i = (i + incr) & mask
-                v = table[i]
-                if v is None:
-                    table[i] = value
-                    break
-                incr = incr << 1
-                if incr > mask:
-                    incr = incr ^ poly
-
-        print(n, "collisions")
-        self.collisions = n
-
-        for i in range(len(table)):
-            if table[i] is None:
-                table[i] = 0
-
-        self.data = Array(name + "_hash", table)
-        self.magic = magic
-        self.name = name
-        self.size = size
-        self.poly = poly
-
-    def dump(self, file, trace):
-        # write data to file, as a C array
-        self.data.dump(file, trace)
-        file.write("#define %s_magic %d\n" % (self.name, self.magic))
-        file.write("#define %s_size %d\n" % (self.name, self.size))
-        file.write("#define %s_poly %d\n" % (self.name, self.poly))
-
 
 # stuff to deal with arrays of unsigned integers
 
diff --git a/Tools/wasm/.editorconfig b/Tools/wasm/.editorconfig
index da1aa6acaccc7e..4de5fe5954d84b 100644
--- a/Tools/wasm/.editorconfig
+++ b/Tools/wasm/.editorconfig
@@ -1,4 +1,5 @@
-root = false  # This extends the root .editorconfig
+# This extends the root .editorconfig
+root = false
 
 [*.{html,js}]
 trim_trailing_whitespace = true
diff --git a/Tools/wasm/README.md b/Tools/wasm/README.md
index 8874f9b7e35e97..beb857f69e40da 100644
--- a/Tools/wasm/README.md
+++ b/Tools/wasm/README.md
@@ -10,9 +10,15 @@ use WASM runtimes such as *wasmtime*.
 
 Users and developers are encouraged to use the script
 `Tools/wasm/wasm_build.py`. The tool automates the build process and provides
-assistance with installation of SDKs.
+assistance with installation of SDKs, running tests, etc.
 
-## wasm32-emscripten build
+**NOTE**: If you are looking for information that is not directly related to
+building CPython for WebAssembly (or the resulting build), please see
+https://github.com/psf/webassembly for more information.
+
+## wasm32-emscripten
+
+### Build
 
 For now the build system has two target flavors. The ``Emscripten/browser``
 target (``--with-emscripten-target=browser``) is optimized for browsers.
@@ -25,6 +31,10 @@ Cross compiling to the wasm32-emscripten platform needs the
 Emscripten 3.1.19 or newer are recommended. All commands below are relative
 to a repository checkout.
 
+#### Toolchain
+
+##### Container image
+
 Christian Heimes maintains a container image with Emscripten SDK, Python
 build dependencies, WASI-SDK, wasmtime, and several additional tools.
 
@@ -38,7 +48,42 @@ podman run --rm -ti -v $(pwd):/python-wasm/cpython:Z -w /python-wasm/cpython qua
 docker run --rm -ti -v $(pwd):/python-wasm/cpython -w /python-wasm/cpython quay.io/tiran/cpythonbuild:emsdk3
 ```
 
-### Compile a build Python interpreter
+##### Manually
+
+###### Install [Emscripten SDK](https://emscripten.org/docs/getting_started/downloads.html)
+
+**NOTE**: Follow the on-screen instructions how to add the SDK to ``PATH``.
+
+```shell
+git clone https://github.com/emscripten-core/emsdk.git /opt/emsdk
+/opt/emsdk/emsdk install latest
+/opt/emsdk/emsdk activate latest
+```
+
+###### Optionally: enable ccache for EMSDK
+
+The ``EM_COMPILER_WRAPPER`` must be set after the EMSDK environment is
+sourced. Otherwise the source script removes the environment variable.
+
+```
+. /opt/emsdk/emsdk_env.sh
+EM_COMPILER_WRAPPER=ccache
+```
+
+###### Optionally: pre-build and cache static libraries
+
+Emscripten SDK provides static builds of core libraries without PIC
+(position-independent code). Python builds with ``dlopen`` support require
+PIC. To populate the build cache, run:
+
+```shell
+. /opt/emsdk/emsdk_env.sh
+embuilder build zlib bzip2 MINIMAL_PIC
+embuilder --pic build zlib bzip2 MINIMAL_PIC
+```
+
+
+#### Compile a build Python interpreter
 
 From within the container, run the following command:
 
@@ -56,7 +101,7 @@ make -j$(nproc)
 popd
 ```
 
-### Cross-compile to wasm32-emscripten for browser
+#### Cross-compile to wasm32-emscripten for browser
 
 ```shell
 ./Tools/wasm/wasm_build.py emscripten-browser
@@ -93,10 +138,10 @@ directory structure enables the *C/C++ DevTools Support (DWARF)* to load C
 and header files with debug builds.
 
 
-### Cross compile to wasm32-emscripten for node
+#### Cross compile to wasm32-emscripten for node
 
 ```shell
-./Tools/wasm/wasm_build.py emscripten-browser-dl
+./Tools/wasm/wasm_build.py emscripten-node-dl
 ```
 
 The command is roughly equivalent to:
@@ -123,13 +168,13 @@ node --experimental-wasm-threads --experimental-wasm-bulk-memory --experimental-
 
 (``--experimental-wasm-bigint`` is not needed with recent NodeJS versions)
 
-# wasm32-emscripten limitations and issues
+### Limitations and issues
 
 Emscripten before 3.1.8 has known bugs that can cause memory corruption and
 resource leaks. 3.1.8 contains several fixes for bugs in date and time
 functions.
 
-## Network stack
+#### Network stack
 
 - Python's socket module does not work with Emscripten's emulated POSIX
   sockets yet. Network modules like ``asyncio``, ``urllib``, ``selectors``,
@@ -143,7 +188,7 @@ functions.
 - The ``select`` module is limited. ``select.select()`` crashes the runtime
   due to lack of exectfd support.
 
-## processes, signals
+#### processes, signals
 
 - Processes are not supported. System calls like fork, popen, and subprocess
   fail with ``ENOSYS`` or ``ENOSUP``.
@@ -153,7 +198,7 @@ functions.
 - Resource-related functions like ``os.nice`` and most functions of the
   ``resource`` module are not available.
 
-## threading
+#### threading
 
 - Threading is disabled by default. The ``configure`` option
   ``--enable-wasm-pthreads`` adds compiler flag ``-pthread`` and
@@ -164,7 +209,7 @@ functions.
 - It's not advised to enable threading when building for browsers or with
   dynamic linking support; there are performance and stability issues.
 
-## file system
+#### file system
 
 - Most user, group, and permission related function and modules are not
   supported or don't work as expected, e.g.``pwd`` module, ``grp`` module,
@@ -180,7 +225,7 @@ functions.
 - Large file support crashes the runtime and is disabled.
 - ``mmap`` module is unstable. flush (``msync``) can crash the runtime.
 
-## Misc
+#### Misc
 
 - Heap memory and stack size are limited. Recursion or extensive memory
   consumption can crash Python.
@@ -198,7 +243,7 @@ functions.
 - Some ``ctypes`` features like ``c_longlong`` and ``c_longdouble`` may need
    NodeJS option ``--experimental-wasm-bigint``.
 
-## wasm32-emscripten in browsers
+#### In the browser
 
 - The interactive shell does not handle copy 'n paste and unicode support
   well.
@@ -210,14 +255,14 @@ functions.
 - Test modules are disabled by default. Use ``--enable-test-modules`` build
   test modules like ``_testcapi``.
 
-## wasm32-emscripten in node
+### wasm32-emscripten in node
 
 Node builds use ``NODERAWFS``.
 
 - Node RawFS allows direct access to the host file system without need to
   perform ``FS.mount()`` call.
 
-## wasm64-emscripten
+### wasm64-emscripten
 
 - wasm64 requires recent NodeJS and ``--experimental-wasm-memory64``.
 - ``EM_JS`` functions must return ``BigInt()``.
@@ -226,7 +271,7 @@ Node builds use ``NODERAWFS``.
   [gh-95876](https://github.com/python/cpython/issues/95876) and
   [gh-95878](https://github.com/python/cpython/issues/95878).
 
-# Hosting Python WASM builds
+### Hosting Python WASM builds
 
 The simple REPL terminal uses SharedArrayBuffer. For security reasons
 browsers only provide the feature in secure environents with cross-origin
@@ -234,7 +279,7 @@ isolation. The webserver must send cross-origin headers and correct MIME types
 for the JavaScript and WASM files. Otherwise the terminal will fail to load
 with an error message like ``Browsers disable shared array buffer``.
 
-## Apache HTTP .htaccess
+#### Apache HTTP .htaccess
 
 Place a ``.htaccess`` file in the same directory as ``python.wasm``.
 
@@ -251,91 +296,89 @@ AddType application/wasm wasm
 </IfModule>
 ```
 
-# WASI (wasm32-wasi)
+## WASI (wasm32-wasi)
+
+**NOTE**: The instructions below assume a Unix-based OS due to cross-compilation for CPython being set up for `./configure`.
 
-WASI builds require [WASI SDK](https://github.com/WebAssembly/wasi-sdk) 16.0+.
+### Prerequisites
 
-## Cross-compile to wasm32-wasi
+Developing for WASI requires two additional tools to be installed beyond the typical tools required to build CPython:
 
-The script ``wasi-env`` sets necessary compiler and linker flags as well as
-``pkg-config`` overrides. The script assumes that WASI-SDK is installed in
-``/opt/wasi-sdk`` or ``$WASI_SDK_PATH``.
+1. The [WASI SDK](https://github.com/WebAssembly/wasi-sdk) 16.0+
+2. A WASI host/runtime ([wasmtime](https://wasmtime.dev) 14+ is recommended and what the instructions below assume)
 
+All of this is provided in the [devcontainer](https://devguide.python.org/getting-started/setup-building/#contribute-using-github-codespaces) if you don't want to install these tools locally.
+
+### Building
+
+Building for WASI requires doing a cross-build where you have a "build" Python to help produce a WASI build of CPython (technically it's a "host x host" cross-build because the build Python is also the target Python while the host build is the WASI build; yes, it's confusing terminology). In the end you should have a build Python in `cross-build/build` and a WASI build in `cross-build/wasm32-wasi`.
+
+The easiest way to do a build is to use the `wasi.py` script. You can either have it perform the entire build process from start to finish in one step, or you can do it in discrete steps that mirror running `configure` and `make` for each of the two builds of Python you end up producing (which are beneficial when you only need to do a specific step after getting a complete build, e.g. editing some code and you just need to run `make` for the WASI build). The script is designed to self-document what actions it is performing on your behalf, both as a way to check its work but also for educaitonal purposes.
+
+The discrete steps for building via `wasi.py` are:
 ```shell
-./Tools/wasm/wasm_build.py wasi
+python Tools/wasm/wasi.py configure-build-python
+python Tools/wasm/wasi.py make-build-python
+python Tools/wasm/wasi.py configure-host
+python Tools/wasm/wasi.py make-host
 ```
 
-The command is roughly equivalent to:
+To do it all in a single command, run:
+```shell
+python Tools/wasm/wasi.py build
+```
 
+That will:
+
+1. Run `configure` for the build Python (same as `wasi.py configure-build-python`)
+2. Run `make` for the build Python (`wasi.py make-build-python`)
+3. Run `configure` for the WASI build (`wasi.py configure-host`)
+4. Run `make` for the WASI build (`wasi.py make-host`)
+
+See the `--help` for the various options available for each of the subcommands which controls things like the location of the WASI SDK, the command to use with the WASI host/runtime, etc. Also note that you can use `--` as a separator for any of the `configure`-related commands -- including `build` itself -- to pass arguments to the underlying `configure` call. For example, if you want a pydebug build that also caches the results from `configure`, you can do:
 ```shell
-mkdir -p builddir/wasi
-pushd builddir/wasi
+python Tools/wasm/wasi.py build -- -C --with-pydebug
+```
 
-CONFIG_SITE=../../Tools/wasm/config.site-wasm32-wasi \
-  ../../Tools/wasm/wasi-env ../../configure -C \
-    --host=wasm32-unknown-wasi \
-    --build=$(../../config.guess) \
-    --with-build-python=$(pwd)/../build/python
+The `wasi.py` script is able to infer details from the build Python, and so you only technically need to specify `--with-pydebug` once via `configure-build-python` as this will lead to `configure-host` detecting its use if you use the discrete steps:
+```shell
+python Tools/wasm/wasi.py configure-build-python -- -C --with-pydebug
+python Tools/wasm/wasi.py make-build-python
+python Tools/wasm/wasi.py configure-host -- -C
+python Tools/wasm/wasi.py make-host
+```
 
-make -j$(nproc)
-popd
+
+### Running
+
+If you used `wasi.py` to do your build then there will be a `cross-build/wasm32-wasi/python.sh` file which you can use to run the `python.wasm` file (see the output from the `configure-host` subcommand):
+```shell
+cross-build/wasm32-wasi/python.sh --version
 ```
 
-## WASI limitations and issues (WASI SDK 15.0)
-
-A lot of Emscripten limitations also apply to WASI. Noticeable restrictions
-are:
-
-- Call stack size is limited. Default recursion limit and parser stack size
-  are smaller than in regular Python builds.
-- ``socket(2)`` cannot create new socket file descriptors. WASI programs can
-  call read/write/accept on a file descriptor that is passed into the process.
-- ``socket.gethostname()`` and host name resolution APIs like
-  ``socket.gethostbyname()`` are not implemented and always fail.
-- ``open(2)`` checks flags more strictly. Caller must pass either
-  ``O_RDONLY``, ``O_RDWR``, or ``O_WDONLY`` to ``os.open``. Directory file
-  descriptors must be created with flags ``O_RDONLY | O_DIRECTORY``.
-- ``chmod(2)`` is not available. It's not possible to modify file permissions,
-  yet. A future version of WASI may provide a limited ``set_permissions`` API.
-- User/group related features like ``os.chown()``, ``os.getuid``, etc. are
-  stubs or fail with ``ENOTSUP``.
-- File locking (``fcntl``) is not available.
-- ``os.pipe()``, ``os.mkfifo()``, and ``os.mknod()`` are not supported.
-- ``process_time`` does not work as expected because it's implemented using
-  wall clock.
-- ``os.umask()`` is a stub.
-- ``sys.executable`` is empty.
-- ``/dev/null`` / ``os.devnull`` may not be available.
-- ``os.utime*()`` is buggy in WASM SDK 15.0, see
-  [utimensat() with timespec=NULL sets wrong time](https://github.com/bytecodealliance/wasmtime/issues/4184)
-- ``os.symlink()`` fails with ``PermissionError`` when attempting to create a
-  symlink with an absolute path with wasmtime 0.36.0. The wasmtime runtime
-  uses ``openat2(2)`` syscall with flag ``RESOLVE_BENEATH`` to open files.
-  The flag causes the syscall to reject symlinks with absolute paths.
-- ``os.curdir`` (aka ``.``) seems to behave differently, which breaks some
-  ``importlib`` tests that add ``.`` to ``sys.path`` and indirectly
-  ``sys.path_importer_cache``.
-- WASI runtime environments may not provide a dedicated temp directory.
-
-
-# Detect WebAssembly builds
-
-## Python code
+While you _can_ run `python.wasm` directly, Python will fail to start up without certain things being set (e.g. `PYTHONPATH` for `sysconfig` data). As such, the `python.sh` file records these details for you.
+
+
+## Detecting WebAssembly builds
+
+### Python code
 
 ```python
 import os, sys
 
 if sys.platform == "emscripten":
     # Python on Emscripten
+    ...
 if sys.platform == "wasi":
     # Python on WASI
+    ...
 
 if os.name == "posix":
     # WASM platforms identify as POSIX-like.
     # Windows does not provide os.uname().
     machine = os.uname().machine
     if machine.startswith("wasm"):
-        # WebAssembly (wasm32, wasm64 in the future)
+        # WebAssembly (wasm32, wasm64 potentially in the future)
 ```
 
 ```python
@@ -387,118 +430,15 @@ posix.uname_result(
 'wasi'
 ```
 
-## C code
+### C code
 
 Emscripten SDK and WASI SDK define several built-in macros. You can dump a
 full list of built-ins with ``emcc -dM -E - < /dev/null`` and
 ``/path/to/wasi-sdk/bin/clang -dM -E - < /dev/null``.
 
-```C
-#ifdef __EMSCRIPTEN__
-    // Python on Emscripten
-#endif
-```
-
 * WebAssembly ``__wasm__`` (also ``__wasm``)
 * wasm32 ``__wasm32__`` (also ``__wasm32``)
 * wasm64 ``__wasm64__``
 * Emscripten ``__EMSCRIPTEN__`` (also ``EMSCRIPTEN``)
 * Emscripten version ``__EMSCRIPTEN_major__``, ``__EMSCRIPTEN_minor__``, ``__EMSCRIPTEN_tiny__``
 * WASI ``__wasi__``
-
-Feature detection flags:
-
-* ``__EMSCRIPTEN_PTHREADS__``
-* ``__EMSCRIPTEN_SHARED_MEMORY__``
-* ``__wasm_simd128__``
-* ``__wasm_sign_ext__``
-* ``__wasm_bulk_memory__``
-* ``__wasm_atomics__``
-* ``__wasm_mutable_globals__``
-
-## Install SDKs and dependencies manually
-
-In some cases (e.g. build bots) you may prefer to install build dependencies
-directly on the system instead of using the container image. Total disk size
-of SDKs and cached libraries is about 1.6 GB.
-
-### Install OS dependencies
-
-```shell
-# Debian/Ubuntu
-apt update
-apt install -y git make xz-utils bzip2 curl python3-minimal ccache
-```
-
-```shell
-# Fedora
-dnf install -y git make xz bzip2 which ccache
-```
-
-### Install [Emscripten SDK](https://emscripten.org/docs/getting_started/downloads.html)
-
-**NOTE**: Follow the on-screen instructions how to add the SDK to ``PATH``.
-
-```shell
-git clone https://github.com/emscripten-core/emsdk.git /opt/emsdk
-/opt/emsdk/emsdk install latest
-/opt/emsdk/emsdk activate latest
-```
-
-### Optionally: enable ccache for EMSDK
-
-The ``EM_COMPILER_WRAPPER`` must be set after the EMSDK environment is
-sourced. Otherwise the source script removes the environment variable.
-
-```
-. /opt/emsdk/emsdk_env.sh
-EM_COMPILER_WRAPPER=ccache
-```
-
-### Optionally: pre-build and cache static libraries
-
-Emscripten SDK provides static builds of core libraries without PIC
-(position-independent code). Python builds with ``dlopen`` support require
-PIC. To populate the build cache, run:
-
-```shell
-. /opt/emsdk/emsdk_env.sh
-embuilder build zlib bzip2 MINIMAL_PIC
-embuilder build --pic zlib bzip2 MINIMAL_PIC
-```
-
-### Install [WASI-SDK](https://github.com/WebAssembly/wasi-sdk)
-
-**NOTE**: WASI-SDK's clang may show a warning on Fedora:
-``/lib64/libtinfo.so.6: no version information available``,
-[RHBZ#1875587](https://bugzilla.redhat.com/show_bug.cgi?id=1875587). The
-warning can be ignored.
-
-```shell
-export WASI_VERSION=16
-export WASI_VERSION_FULL=${WASI_VERSION}.0
-curl -sSf -L -O https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_VERSION}/wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
-mkdir -p /opt/wasi-sdk
-tar --strip-components=1 -C /opt/wasi-sdk -xvf wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
-rm -f wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
-```
-
-### Install [wasmtime](https://github.com/bytecodealliance/wasmtime) WASI runtime
-
-wasmtime 0.38 or newer is required.
-
-```shell
-curl -sSf -L -o ~/install-wasmtime.sh https://wasmtime.dev/install.sh
-chmod +x ~/install-wasmtime.sh
-~/install-wasmtime.sh --version v0.38.0
-ln -srf -t /usr/local/bin/ ~/.wasmtime/bin/wasmtime
-```
-
-
-### WASI debugging
-
-* ``wasmtime run -g`` generates debugging symbols for gdb and lldb. The
-  feature is currently broken, see
-  https://github.com/bytecodealliance/wasmtime/issues/4669 .
-* The environment variable ``RUST_LOG=wasi_common`` enables debug and
-  trace logging.
diff --git a/Tools/wasm/Setup.local.example b/Tools/wasm/Setup.local.example
index cfb9f7fc8755f8..7b2fb13f6ceef2 100644
--- a/Tools/wasm/Setup.local.example
+++ b/Tools/wasm/Setup.local.example
@@ -1,11 +1,8 @@
 # Module/Setup.local with reduced stdlib
 *disabled*
 _asyncio
-audioop
 _bz2
-_crypt
 _decimal
-nis
 _pickle
 pyexpat _elementtree
 _sha3 _blake2
diff --git a/Tools/wasm/build_wasi.sh b/Tools/wasm/build_wasi.sh
new file mode 100755
index 00000000000000..436306222ce1d0
--- /dev/null
+++ b/Tools/wasm/build_wasi.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/bash
+
+set -e -x
+
+# Quick check to avoid running configure just to fail in the end.
+if [ -f Programs/python.o ]; then
+    echo "Can't do an out-of-tree build w/ an in-place build pre-existing (i.e., found Programs/python.o)" >&2
+    exit 1
+fi
+
+if [ ! -f Modules/Setup.local ]; then
+    touch Modules/Setup.local
+fi
+
+# TODO: check if `make` and `pkgconfig` are installed
+# TODO: detect if wasmtime is installed
+
+# Create the "build" Python.
+mkdir -p builddir/build
+pushd builddir/build
+../../configure -C
+make -s -j 4 all
+export PYTHON_VERSION=`./python -c 'import sys; print(f"{sys.version_info.major}.{sys.version_info.minor}")'`
+popd
+
+# Create the "host"/WASI Python.
+export CONFIG_SITE="$(pwd)/Tools/wasm/config.site-wasm32-wasi"
+export HOSTRUNNER="wasmtime run --mapdir /::$(pwd) --env PYTHONPATH=/builddir/wasi/build/lib.wasi-wasm32-$PYTHON_VERSION $(pwd)/builddir/wasi/python.wasm --"
+
+mkdir -p builddir/wasi
+pushd builddir/wasi
+../../Tools/wasm/wasi-env \
+    ../../configure \
+        -C \
+        --host=wasm32-unknown-wasi \
+        --build=$(../../config.guess) \
+        --with-build-python=../build/python
+make -s -j 4 all
+# Create a helper script for executing the host/WASI Python.
+printf "#!/bin/sh\nexec $HOSTRUNNER \"\$@\"\n" > run_wasi.sh
+chmod 755 run_wasi.sh
+./run_wasi.sh --version
+popd
+
diff --git a/Tools/wasm/mypy.ini b/Tools/wasm/mypy.ini
new file mode 100644
index 00000000000000..4de0a30c260f5f
--- /dev/null
+++ b/Tools/wasm/mypy.ini
@@ -0,0 +1,11 @@
+[mypy]
+files = Tools/wasm/wasm_*.py
+pretty = True
+show_traceback = True
+
+# Make sure the wasm can be run using Python 3.8:
+python_version = 3.8
+
+# Be strict...
+strict = True
+enable_error_code = truthy-bool,ignore-without-code
diff --git a/Tools/wasm/wasi.py b/Tools/wasm/wasi.py
new file mode 100644
index 00000000000000..34c0e9375e24c8
--- /dev/null
+++ b/Tools/wasm/wasi.py
@@ -0,0 +1,328 @@
+#!/usr/bin/env python3
+
+import argparse
+import contextlib
+import functools
+import os
+try:
+    from os import process_cpu_count as cpu_count
+except ImportError:
+    from os import cpu_count
+import pathlib
+import shutil
+import subprocess
+import sys
+import sysconfig
+import tempfile
+
+
+CHECKOUT = pathlib.Path(__file__).parent.parent.parent
+CROSS_BUILD_DIR = CHECKOUT / "cross-build"
+BUILD_DIR = CROSS_BUILD_DIR / "build"
+HOST_TRIPLE = "wasm32-wasi"
+HOST_DIR = CROSS_BUILD_DIR / HOST_TRIPLE
+
+
+def updated_env(updates={}):
+    """Create a new dict representing the environment to use.
+
+    The changes made to the execution environment are printed out.
+    """
+    env_defaults = {}
+    # https://reproducible-builds.org/docs/source-date-epoch/
+    git_epoch_cmd = ["git", "log", "-1", "--pretty=%ct"]
+    try:
+        epoch = subprocess.check_output(git_epoch_cmd, encoding="utf-8").strip()
+        env_defaults["SOURCE_DATE_EPOCH"] = epoch
+    except subprocess.CalledProcessError:
+        pass  # Might be building from a tarball.
+    # This layering lets SOURCE_DATE_EPOCH from os.environ takes precedence.
+    environment = env_defaults | os.environ | updates
+
+    env_diff = {}
+    for key, value in environment.items():
+        if os.environ.get(key) != value:
+            env_diff[key] = value
+
+    print("🌎 Environment changes:")
+    for key in sorted(env_diff.keys()):
+        print(f"  {key}={env_diff[key]}")
+
+    return environment
+
+
+def subdir(working_dir, *, clean_ok=False):
+    """Decorator to change to a working directory."""
+    def decorator(func):
+        @functools.wraps(func)
+        def wrapper(context):
+            try:
+                tput_output = subprocess.check_output(["tput", "cols"],
+                                                      encoding="utf-8")
+                terminal_width = int(tput_output.strip())
+            except subprocess.CalledProcessError:
+                terminal_width = 80
+            print("⎯" * terminal_width)
+            print("�", working_dir)
+            if clean_ok and context.clean and working_dir.exists():
+                print(f"🚮 Deleting directory (--clean)...")
+                shutil.rmtree(working_dir)
+
+            working_dir.mkdir(parents=True, exist_ok=True)
+
+            with contextlib.chdir(working_dir):
+                return func(context, working_dir)
+
+        return wrapper
+
+    return decorator
+
+
+def call(command, *, quiet, **kwargs):
+    """Execute a command.
+
+    If 'quiet' is true, then redirect stdout and stderr to a temporary file.
+    """
+    print("�", " ".join(map(str, command)))
+    if not quiet:
+        stdout = None
+        stderr = None
+    else:
+        stdout = tempfile.NamedTemporaryFile("w", encoding="utf-8",
+                                             delete=False,
+                                             prefix="cpython-wasi-",
+                                             suffix=".log")
+        stderr = subprocess.STDOUT
+        print(f"� Logging output to {stdout.name} (--quiet)...")
+
+    subprocess.check_call(command, **kwargs, stdout=stdout, stderr=stderr)
+
+
+def build_platform():
+    """The name of the build/host platform."""
+    # Can also be found via `config.guess`.`
+    return sysconfig.get_config_var("BUILD_GNU_TYPE")
+
+
+def build_python_path():
+    """The path to the build Python binary."""
+    binary = BUILD_DIR / "python"
+    if not binary.is_file():
+        binary = binary.with_suffix(".exe")
+        if not binary.is_file():
+            raise FileNotFoundError("Unable to find `python(.exe)` in "
+                                    f"{BUILD_DIR}")
+
+    return binary
+
+
+@subdir(BUILD_DIR, clean_ok=True)
+def configure_build_python(context, working_dir):
+    """Configure the build/host Python."""
+    local_setup = CHECKOUT / "Modules" / "Setup.local"
+    if local_setup.exists():
+        print(f"� {local_setup} exists ...")
+    else:
+        print(f"� Touching {local_setup} ...")
+        local_setup.touch()
+
+    configure = [os.path.relpath(CHECKOUT / 'configure', working_dir)]
+    if context.args:
+        configure.extend(context.args)
+
+    call(configure, quiet=context.quiet)
+
+
+@subdir(BUILD_DIR)
+def make_build_python(context, working_dir):
+    """Make/build the build Python."""
+    call(["make", "--jobs", str(cpu_count()), "all"],
+            quiet=context.quiet)
+
+    binary = build_python_path()
+    cmd = [binary, "-c",
+            "import sys; "
+            "print(f'{sys.version_info.major}.{sys.version_info.minor}')"]
+    version = subprocess.check_output(cmd, encoding="utf-8").strip()
+
+    print(f"🎉 {binary} {version}")
+
+
+def find_wasi_sdk():
+    """Find the path to wasi-sdk."""
+    if wasi_sdk_path := os.environ.get("WASI_SDK_PATH"):
+        return pathlib.Path(wasi_sdk_path)
+    elif (default_path := pathlib.Path("/opt/wasi-sdk")).exists():
+        return default_path
+
+
+def wasi_sdk_env(context):
+    """Calculate environment variables for building with wasi-sdk."""
+    wasi_sdk_path = context.wasi_sdk_path
+    sysroot = wasi_sdk_path / "share" / "wasi-sysroot"
+    env = {"CC": "clang", "CPP": "clang-cpp", "CXX": "clang++",
+           "LDSHARED": "wasm-ld", "AR": "llvm-ar", "RANLIB": "ranlib"}
+
+    for env_var, binary_name in list(env.items()):
+        env[env_var] = os.fsdecode(wasi_sdk_path / "bin" / binary_name)
+
+    if wasi_sdk_path != pathlib.Path("/opt/wasi-sdk"):
+        for compiler in ["CC", "CPP", "CXX"]:
+            env[compiler] += f" --sysroot={sysroot}"
+
+    env["PKG_CONFIG_PATH"] = ""
+    env["PKG_CONFIG_LIBDIR"] = os.pathsep.join(
+                                map(os.fsdecode,
+                                    [sysroot / "lib" / "pkgconfig",
+                                     sysroot / "share" / "pkgconfig"]))
+    env["PKG_CONFIG_SYSROOT_DIR"] = os.fsdecode(sysroot)
+
+    env["WASI_SDK_PATH"] = os.fsdecode(wasi_sdk_path)
+    env["WASI_SYSROOT"] = os.fsdecode(sysroot)
+
+    env["PATH"] = os.pathsep.join([os.fsdecode(wasi_sdk_path / "bin"),
+                                   os.environ["PATH"]])
+
+    return env
+
+
+@subdir(HOST_DIR, clean_ok=True)
+def configure_wasi_python(context, working_dir):
+    """Configure the WASI/host build."""
+    if not context.wasi_sdk_path or not context.wasi_sdk_path.exists():
+        raise ValueError("WASI-SDK not found; "
+                        "download from "
+                        "https://github.com/WebAssembly/wasi-sdk and/or "
+                        "specify via $WASI_SDK_PATH or --wasi-sdk")
+
+    config_site = os.fsdecode(CHECKOUT / "Tools" / "wasm" / "config.site-wasm32-wasi")
+
+    wasi_build_dir = working_dir.relative_to(CHECKOUT)
+
+    python_build_dir = BUILD_DIR / "build"
+    lib_dirs = list(python_build_dir.glob("lib.*"))
+    assert len(lib_dirs) == 1, f"Expected a single lib.* directory in {python_build_dir}"
+    lib_dir = os.fsdecode(lib_dirs[0])
+    pydebug = lib_dir.endswith("-pydebug")
+    python_version = lib_dir.removesuffix("-pydebug").rpartition("-")[-1]
+    sysconfig_data = f"{wasi_build_dir}/build/lib.wasi-wasm32-{python_version}"
+    if pydebug:
+        sysconfig_data += "-pydebug"
+
+    # Use PYTHONPATH to include sysconfig data which must be anchored to the
+    # WASI guest's `/` directory.
+    host_runner = context.host_runner.format(GUEST_DIR="/",
+                                             HOST_DIR=CHECKOUT,
+                                             ENV_VAR_NAME="PYTHONPATH",
+                                             ENV_VAR_VALUE=f"/{sysconfig_data}",
+                                             PYTHON_WASM=working_dir / "python.wasm")
+    env_additions = {"CONFIG_SITE": config_site, "HOSTRUNNER": host_runner}
+    build_python = os.fsdecode(build_python_path())
+    # The path to `configure` MUST be relative, else `python.wasm` is unable
+    # to find the stdlib due to Python not recognizing that it's being
+    # executed from within a checkout.
+    configure = [os.path.relpath(CHECKOUT / 'configure', working_dir),
+                    f"--host={HOST_TRIPLE}",
+                    f"--build={build_platform()}",
+                    f"--with-build-python={build_python}"]
+    if pydebug:
+        configure.append("--with-pydebug")
+    if context.args:
+        configure.extend(context.args)
+    call(configure,
+         env=updated_env(env_additions | wasi_sdk_env(context)),
+         quiet=context.quiet)
+
+    exec_script = working_dir / "python.sh"
+    with exec_script.open("w", encoding="utf-8") as file:
+        file.write(f'#!/bin/sh\nexec {host_runner} "$@"\n')
+    exec_script.chmod(0o755)
+    print(f"��♀� Created {exec_script} ... ")
+    sys.stdout.flush()
+
+
+@subdir(HOST_DIR)
+def make_wasi_python(context, working_dir):
+    """Run `make` for the WASI/host build."""
+    call(["make", "--jobs", str(cpu_count()), "all"],
+             env=updated_env(),
+             quiet=context.quiet)
+
+    exec_script = working_dir / "python.sh"
+    subprocess.check_call([exec_script, "--version"])
+
+
+def build_all(context):
+    """Build everything."""
+    steps = [configure_build_python, make_build_python, configure_wasi_python,
+             make_wasi_python]
+    for step in steps:
+        step(context)
+
+
+def main():
+    default_host_runner = (f"{shutil.which('wasmtime')} run "
+                        # Make sure the stack size will work for a pydebug
+                        # build.
+                        # The 8388608 value comes from `ulimit -s` under Linux
+                        # which equates to 8291 KiB.
+                        "--wasm max-wasm-stack=8388608 "
+                        # Enable thread support.
+                        "--wasm threads=y --wasi threads=y "
+                        # Map the checkout to / to load the stdlib from /Lib.
+                        "--dir {HOST_DIR}::{GUEST_DIR} "
+                        # Set PYTHONPATH to the sysconfig data.
+                        "--env {ENV_VAR_NAME}={ENV_VAR_VALUE} "
+                        # Path to the WASM binary.
+                        "{PYTHON_WASM}")
+
+    parser = argparse.ArgumentParser()
+    subcommands = parser.add_subparsers(dest="subcommand")
+    build = subcommands.add_parser("build", help="Build everything")
+    configure_build = subcommands.add_parser("configure-build-python",
+                                             help="Run `configure` for the "
+                                             "build Python")
+    make_build = subcommands.add_parser("make-build-python",
+                                        help="Run `make` for the build Python")
+    configure_host = subcommands.add_parser("configure-host",
+                                            help="Run `configure` for the "
+                                                 "host/WASI (pydebug builds "
+                                                 "are inferred from the build "
+                                                 "Python)")
+    make_host = subcommands.add_parser("make-host",
+                                       help="Run `make` for the host/WASI")
+    for subcommand in build, configure_build, make_build, configure_host, make_host:
+        subcommand.add_argument("--quiet", action="store_true", default=False,
+                        dest="quiet",
+                        help="Redirect output from subprocesses to a log file")
+    for subcommand in build, configure_build, configure_host:
+        subcommand.add_argument("--clean", action="store_true", default=False,
+                        dest="clean",
+                        help="Delete any relevant directories before building")
+    for subcommand in build, configure_build, configure_host:
+        subcommand.add_argument("args", nargs="*",
+                                help="Extra arguments to pass to `configure`")
+    for subcommand in build, configure_host:
+        subcommand.add_argument("--wasi-sdk", type=pathlib.Path,
+                                dest="wasi_sdk_path",
+                                default=find_wasi_sdk(),
+                                help="Path to wasi-sdk; defaults to "
+                                     "$WASI_SDK_PATH or /opt/wasi-sdk")
+        subcommand.add_argument("--host-runner", action="store",
+                        default=default_host_runner, dest="host_runner",
+                        help="Command template for running the WebAssembly "
+                             "code (default meant for wasmtime 14 or newer: "
+                                f"`{default_host_runner}`)")
+
+    context = parser.parse_args()
+
+    dispatch = {"configure-build-python": configure_build_python,
+                "make-build-python": make_build_python,
+                "configure-host": configure_wasi_python,
+                "make-host": make_wasi_python,
+                "build": build_all}
+    dispatch[context.subcommand](context)
+
+
+if  __name__ == "__main__":
+    main()
diff --git a/Tools/wasm/wasm_assets.py b/Tools/wasm/wasm_assets.py
index 1fc97fd5e70a10..ffa5e303412c46 100755
--- a/Tools/wasm/wasm_assets.py
+++ b/Tools/wasm/wasm_assets.py
@@ -16,6 +16,7 @@
 import sys
 import sysconfig
 import zipfile
+from typing import Dict
 
 # source directory
 SRCDIR = pathlib.Path(__file__).parent.parent.parent.absolute()
@@ -41,11 +42,6 @@
     # package management
     "ensurepip/",
     "venv/",
-    # build system
-    "lib2to3/",
-    # deprecated
-    "uu.py",
-    "xdrlib.py",
     # other platforms
     "_aix_support.py",
     "_osx_support.py",
@@ -59,26 +55,20 @@
     "concurrent/futures/thread.py",
     # Misc unused or large files
     "pydoc_data/",
-    "msilib/",
 )
 
 # Synchronous network I/O and protocols are not supported; for example,
 # socket.create_connection() raises an exception:
 # "BlockingIOError: [Errno 26] Operation in progress".
 OMIT_NETWORKING_FILES = (
-    "cgi.py",
-    "cgitb.py",
     "email/",
     "ftplib.py",
     "http/",
     "imaplib.py",
     "mailbox.py",
-    "mailcap.py",
-    "nntplib.py",
     "poplib.py",
     "smtplib.py",
     "socketserver.py",
-    "telnetlib.py",
     # keep urllib.parse for pydoc
     "urllib/error.py",
     "urllib/request.py",
@@ -89,8 +79,6 @@
 
 OMIT_MODULE_FILES = {
     "_asyncio": ["asyncio/"],
-    "audioop": ["aifc.py", "sunau.py", "wave.py"],
-    "_crypt": ["crypt.py"],
     "_curses": ["curses/"],
     "_ctypes": ["ctypes/"],
     "_decimal": ["decimal.py"],
@@ -123,7 +111,8 @@ def get_builddir(args: argparse.Namespace) -> pathlib.Path:
 
 def get_sysconfigdata(args: argparse.Namespace) -> pathlib.Path:
     """Get path to sysconfigdata relative to build root"""
-    data_name = sysconfig._get_sysconfigdata_name()
+    assert isinstance(args.builddir, pathlib.Path)
+    data_name: str = sysconfig._get_sysconfigdata_name()  # type: ignore[attr-defined]
     if not data_name.startswith(SYSCONFIG_NAMES):
         raise ValueError(
             f"Invalid sysconfig data name '{data_name}'.", SYSCONFIG_NAMES
@@ -159,7 +148,7 @@ def filterfunc(filename: str) -> bool:
                 pzf.writepy(entry, filterfunc=filterfunc)
 
 
-def detect_extension_modules(args: argparse.Namespace):
+def detect_extension_modules(args: argparse.Namespace) -> Dict[str, bool]:
     modules = {}
 
     # disabled by Modules/Setup.local ?
@@ -174,7 +163,7 @@ def detect_extension_modules(args: argparse.Namespace):
     # disabled by configure?
     with open(args.sysconfig_data) as f:
         data = f.read()
-    loc = {}
+    loc: Dict[str, Dict[str, str]] = {}
     exec(data, globals(), loc)
 
     for key, value in loc["build_time_vars"].items():
@@ -208,7 +197,7 @@ def path(val: str) -> pathlib.Path:
 )
 
 
-def main():
+def main() -> None:
     args = parser.parse_args()
 
     relative_prefix = args.prefix.relative_to(pathlib.Path("/"))
diff --git a/Tools/wasm/wasm_build.py b/Tools/wasm/wasm_build.py
index 241a5d4eed5ae8..c0b9999a5dad03 100755
--- a/Tools/wasm/wasm_build.py
+++ b/Tools/wasm/wasm_build.py
@@ -40,7 +40,17 @@
 import webbrowser
 
 # for Python 3.8
-from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple, Union
+from typing import (
+    cast,
+    Any,
+    Callable,
+    Dict,
+    Iterable,
+    List,
+    Optional,
+    Tuple,
+    Union,
+)
 
 logger = logging.getLogger("wasm_build")
 
@@ -64,7 +74,7 @@
     (3, 1, 16): "https://github.com/emscripten-core/emscripten/issues/17393",
     (3, 1, 20): "https://github.com/emscripten-core/emscripten/issues/17720",
 }
-_MISSING = pathlib.PurePath("MISSING")
+_MISSING = pathlib.Path("MISSING")
 
 WASM_WEBSERVER = WASMTOOLS / "wasm_webserver.py"
 
@@ -109,7 +119,7 @@
 
 def parse_emconfig(
     emconfig: pathlib.Path = EM_CONFIG,
-) -> Tuple[pathlib.PurePath, pathlib.PurePath]:
+) -> Tuple[pathlib.Path, pathlib.Path]:
     """Parse EM_CONFIG file and lookup EMSCRIPTEN_ROOT and NODE_JS.
 
     The ".emscripten" config file is a Python snippet that uses "EM_CONFIG"
@@ -150,11 +160,11 @@ def read_python_version(configure: pathlib.Path = CONFIGURE) -> str:
 
 
 class ConditionError(ValueError):
-    def __init__(self, info: str, text: str):
+    def __init__(self, info: str, text: str) -> None:
         self.info = info
         self.text = text
 
-    def __str__(self):
+    def __str__(self) -> str:
         return f"{type(self).__name__}: '{self.info}'\n{self.text}"
 
 
@@ -180,19 +190,19 @@ class Platform:
     name: str
     pythonexe: str
     config_site: Optional[pathlib.PurePath]
-    configure_wrapper: Optional[pathlib.PurePath]
+    configure_wrapper: Optional[pathlib.Path]
     make_wrapper: Optional[pathlib.PurePath]
-    environ: dict
+    environ: Dict[str, Any]
     check: Callable[[], None]
     # Used for build_emports().
     ports: Optional[pathlib.PurePath]
     cc: Optional[pathlib.PurePath]
 
-    def getenv(self, profile: "BuildProfile") -> dict:
+    def getenv(self, profile: "BuildProfile") -> Dict[str, Any]:
         return self.environ.copy()
 
 
-def _check_clean_src():
+def _check_clean_src() -> None:
     candidates = [
         SRCDIR / "Programs" / "python.o",
         SRCDIR / "Python" / "frozen_modules" / "importlib._bootstrap.h",
@@ -202,7 +212,7 @@ def _check_clean_src():
             raise DirtySourceDirectory(os.fspath(candidate), CLEAN_SRCDIR)
 
 
-def _check_native():
+def _check_native() -> None:
     if not any(shutil.which(cc) for cc in ["cc", "gcc", "clang"]):
         raise MissingDependency("cc", INSTALL_NATIVE)
     if not shutil.which("make"):
@@ -234,12 +244,12 @@ def _check_native():
 )
 
 
-def _check_emscripten():
+def _check_emscripten() -> None:
     if EMSCRIPTEN_ROOT is _MISSING:
         raise MissingDependency("Emscripten SDK EM_CONFIG", INSTALL_EMSDK)
     # sanity check
     emconfigure = EMSCRIPTEN.configure_wrapper
-    if not emconfigure.exists():
+    if emconfigure is not None and not emconfigure.exists():
         raise MissingDependency(os.fspath(emconfigure), INSTALL_EMSDK)
     # version check
     version_txt = EMSCRIPTEN_ROOT / "emscripten-version.txt"
@@ -250,7 +260,10 @@ def _check_emscripten():
     if version.endswith("-git"):
         # git / upstream / tot-upstream installation
         version = version[:-4]
-    version_tuple = tuple(int(v) for v in version.split("."))
+    version_tuple = cast(
+        Tuple[int, int, int],
+        tuple(int(v) for v in version.split("."))
+    )
     if version_tuple < EMSDK_MIN_VERSION:
         raise ConditionError(
             os.fspath(version_txt),
@@ -293,7 +306,7 @@ def _check_emscripten():
 )
 
 
-def _check_wasi():
+def _check_wasi() -> None:
     wasm_ld = WASI_SDK_PATH / "bin" / "wasm-ld"
     if not wasm_ld.exists():
         raise MissingDependency(os.fspath(wasm_ld), INSTALL_WASI_SDK)
@@ -400,7 +413,7 @@ class EmscriptenTarget(enum.Enum):
     node_debug = "node-debug"
 
     @property
-    def is_browser(self):
+    def is_browser(self) -> bool:
         cls = type(self)
         return self in {cls.browser, cls.browser_debug}
 
@@ -421,7 +434,7 @@ class SupportLevel(enum.Enum):
     experimental = "experimental, may be broken"
     broken = "broken / unavailable"
 
-    def __bool__(self):
+    def __bool__(self) -> bool:
         cls = type(self)
         return self in {cls.supported, cls.working}
 
@@ -480,7 +493,6 @@ def configure_cmd(self) -> List[str]:
             cmd.append(f"--{opt}-wasm-dynamic-linking")
 
         if self.pthreads is not None:
-            assert self.host.is_emscripten
             opt = "enable" if self.pthreads else "disable"
             cmd.append(f"--{opt}-wasm-pthreads")
 
@@ -501,10 +513,14 @@ def make_cmd(self) -> List[str]:
             cmd.insert(0, os.fspath(platform.make_wrapper))
         return cmd
 
-    def getenv(self) -> dict:
+    def getenv(self) -> Dict[str, Any]:
         """Generate environ dict for platform"""
         env = os.environ.copy()
-        env.setdefault("MAKEFLAGS", f"-j{os.cpu_count()}")
+        if hasattr(os, 'process_cpu_count'):
+            cpu_count = os.process_cpu_count()
+        else:
+            cpu_count = os.cpu_count()
+        env.setdefault("MAKEFLAGS", f"-j{cpu_count}")
         platenv = self.host.platform.getenv(self)
         for key, value in platenv.items():
             if value is None:
@@ -530,7 +546,7 @@ def _run_cmd(
         cmd: Iterable[str],
         args: Iterable[str] = (),
         cwd: Optional[pathlib.Path] = None,
-    ):
+    ) -> int:
         cmd = list(cmd)
         cmd.extend(args)
         if cwd is None:
@@ -542,46 +558,46 @@ def _run_cmd(
             env=self.getenv(),
         )
 
-    def _check_execute(self):
+    def _check_execute(self) -> None:
         if self.is_browser:
             raise ValueError(f"Cannot execute on {self.target}")
 
-    def run_build(self, *args):
+    def run_build(self, *args: str) -> None:
         """Run configure (if necessary) and make"""
         if not self.makefile.exists():
             logger.info("Makefile not found, running configure")
             self.run_configure(*args)
         self.run_make("all", *args)
 
-    def run_configure(self, *args):
+    def run_configure(self, *args: str) -> int:
         """Run configure script to generate Makefile"""
         os.makedirs(self.builddir, exist_ok=True)
         return self._run_cmd(self.configure_cmd, args)
 
-    def run_make(self, *args):
+    def run_make(self, *args: str) -> int:
         """Run make (defaults to build all)"""
         return self._run_cmd(self.make_cmd, args)
 
-    def run_pythoninfo(self, *args):
+    def run_pythoninfo(self, *args: str) -> int:
         """Run 'make pythoninfo'"""
         self._check_execute()
         return self.run_make("pythoninfo", *args)
 
-    def run_test(self, target: str, testopts: Optional[str] = None):
+    def run_test(self, target: str, testopts: Optional[str] = None) -> int:
         """Run buildbottests"""
         self._check_execute()
         if testopts is None:
             testopts = self.default_testopts
         return self.run_make(target, f"TESTOPTS={testopts}")
 
-    def run_py(self, *args):
+    def run_py(self, *args: str) -> int:
         """Run Python with hostrunner"""
         self._check_execute()
-        self.run_make(
+        return self.run_make(
             "--eval", f"run: all; $(HOSTRUNNER) ./$(PYTHON) {shlex.join(args)}", "run"
         )
 
-    def run_browser(self, bind="127.0.0.1", port=8000):
+    def run_browser(self, bind: str = "127.0.0.1", port: int = 8000) -> None:
         """Run WASM webserver and open build in browser"""
         relbuilddir = self.builddir.relative_to(SRCDIR)
         url = f"http://{bind}:{port}/{relbuilddir}/python.html"
@@ -612,7 +628,7 @@ def run_browser(self, bind="127.0.0.1", port=8000):
         except KeyboardInterrupt:
             pass
 
-    def clean(self, all: bool = False):
+    def clean(self, all: bool = False) -> None:
         """Clean build directory"""
         if all:
             if self.builddir.exists():
@@ -620,7 +636,7 @@ def clean(self, all: bool = False):
         elif self.makefile.exists():
             self.run_make("clean")
 
-    def build_emports(self, force: bool = False):
+    def build_emports(self, force: bool = False) -> None:
         """Pre-build emscripten ports."""
         platform = self.host.platform
         if platform.ports is None or platform.cc is None:
@@ -745,6 +761,13 @@ def build_emports(self, force: bool = False):
         support_level=SupportLevel.supported,
         host=Host.wasm32_wasi,
     ),
+    # wasm32-wasi-threads
+    BuildProfile(
+        "wasi-threads",
+        support_level=SupportLevel.experimental,
+        host=Host.wasm32_wasi,
+        pthreads=True,
+    ),
     # no SDK available yet
     # BuildProfile(
     #    "wasm64-wasi",
@@ -823,7 +846,7 @@ def build_emports(self, force: bool = False):
 )
 
 
-def main():
+def main() -> None:
     args = parser.parse_args()
     logging.basicConfig(
         level=logging.INFO if args.verbose else logging.ERROR,
diff --git a/Tools/wasm/wasm_webserver.py b/Tools/wasm/wasm_webserver.py
index 186bd57fc2067d..3d1d5d42a1e8c4 100755
--- a/Tools/wasm/wasm_webserver.py
+++ b/Tools/wasm/wasm_webserver.py
@@ -21,21 +21,21 @@ class MyHTTPRequestHandler(server.SimpleHTTPRequestHandler):
         }
     )
 
-    def end_headers(self):
+    def end_headers(self) -> None:
         self.send_my_headers()
         super().end_headers()
 
-    def send_my_headers(self):
+    def send_my_headers(self) -> None:
         self.send_header("Cross-Origin-Opener-Policy", "same-origin")
         self.send_header("Cross-Origin-Embedder-Policy", "require-corp")
 
 
-def main():
+def main() -> None:
     args = parser.parse_args()
     if not args.bind:
         args.bind = None
 
-    server.test(
+    server.test(  # type: ignore[attr-defined]
         HandlerClass=MyHTTPRequestHandler,
         protocol="HTTP/1.1",
         port=args.port,
diff --git a/aclocal.m4 b/aclocal.m4
index 6a33c0cc9d9e8c..09ae5d1aa8a608 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.16.3 -*- Autoconf -*-
+# generated automatically by aclocal 1.16.5 -*- Autoconf -*-
 
-# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -184,7 +184,7 @@ AS_VAR_POPDEF([CACHEVAR])dnl
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 10
+#serial 11
 
 AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL])
 AC_DEFUN([AX_CHECK_OPENSSL], [
@@ -227,7 +227,7 @@ AC_DEFUN([AX_CHECK_OPENSSL], [
     if ! $found; then
         OPENSSL_INCLUDES=
         for ssldir in $ssldirs; do
-            AC_MSG_CHECKING([for openssl/ssl.h in $ssldir])
+            AC_MSG_CHECKING([for include/openssl/ssl.h in $ssldir])
             if test -f "$ssldir/include/openssl/ssl.h"; then
                 OPENSSL_INCLUDES="-I$ssldir/include"
                 OPENSSL_LDFLAGS="-L$ssldir/lib"
@@ -276,7 +276,7 @@ AC_DEFUN([AX_CHECK_OPENSSL], [
 ])
 
 # pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
-# serial 11 (pkg-config-0.29.1)
+# serial 12 (pkg-config-0.29.2)
 
 dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
 dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
@@ -318,7 +318,7 @@ dnl
 dnl See the "Since" comment for each macro you use to see what version
 dnl of the macros you require.
 m4_defun([PKG_PREREQ],
-[m4_define([PKG_MACROS_VERSION], [0.29.1])
+[m4_define([PKG_MACROS_VERSION], [0.29.2])
 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
     [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
 ])dnl PKG_PREREQ
@@ -419,7 +419,7 @@ AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
 
 pkg_failed=no
-AC_MSG_CHECKING([for $1])
+AC_MSG_CHECKING([for $2])
 
 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
@@ -429,11 +429,11 @@ and $1[]_LIBS to avoid the need to call pkg-config.
 See the pkg-config man page for more details.])
 
 if test $pkg_failed = yes; then
-   	AC_MSG_RESULT([no])
+        AC_MSG_RESULT([no])
         _PKG_SHORT_ERRORS_SUPPORTED
         if test $_pkg_short_errors_supported = yes; then
 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
-        else 
+        else
 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
         fi
 	# Put the nasty error message in config.log where it belongs
@@ -450,7 +450,7 @@ installed software in a non-standard prefix.
 _PKG_TEXT])[]dnl
         ])
 elif test $pkg_failed = untried; then
-     	AC_MSG_RESULT([no])
+        AC_MSG_RESULT([no])
 	m4_default([$4], [AC_MSG_FAILURE(
 [The pkg-config script could not be found or is too old.  Make sure it
 is in your PATH or set the PKG_CONFIG environment variable to the full
@@ -551,77 +551,9 @@ AS_VAR_COPY([$1], [pkg_cv_][$1])
 AS_VAR_IF([$1], [""], [$5], [$4])dnl
 ])dnl PKG_CHECK_VAR
 
-dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
-dnl   [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
-dnl   [DESCRIPTION], [DEFAULT])
-dnl ------------------------------------------
-dnl
-dnl Prepare a "--with-" configure option using the lowercase
-dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
-dnl PKG_CHECK_MODULES in a single macro.
-AC_DEFUN([PKG_WITH_MODULES],
-[
-m4_pushdef([with_arg], m4_tolower([$1]))
-
-m4_pushdef([description],
-           [m4_default([$5], [build with ]with_arg[ support])])
-
-m4_pushdef([def_arg], [m4_default([$6], [auto])])
-m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
-m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
-
-m4_case(def_arg,
-            [yes],[m4_pushdef([with_without], [--without-]with_arg)],
-            [m4_pushdef([with_without],[--with-]with_arg)])
-
-AC_ARG_WITH(with_arg,
-     AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
-    [AS_TR_SH([with_]with_arg)=def_arg])
-
-AS_CASE([$AS_TR_SH([with_]with_arg)],
-            [yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
-            [auto],[PKG_CHECK_MODULES([$1],[$2],
-                                        [m4_n([def_action_if_found]) $3],
-                                        [m4_n([def_action_if_not_found]) $4])])
-
-m4_popdef([with_arg])
-m4_popdef([description])
-m4_popdef([def_arg])
-
-])dnl PKG_WITH_MODULES
-
-dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
-dnl   [DESCRIPTION], [DEFAULT])
-dnl -----------------------------------------------
-dnl
-dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
-dnl check._[VARIABLE-PREFIX] is exported as make variable.
-AC_DEFUN([PKG_HAVE_WITH_MODULES],
-[
-PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
-
-AM_CONDITIONAL([HAVE_][$1],
-               [test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
-])dnl PKG_HAVE_WITH_MODULES
-
-dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
-dnl   [DESCRIPTION], [DEFAULT])
-dnl ------------------------------------------------------
-dnl
-dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
-dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
-dnl and preprocessor variable.
-AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
-[
-PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
-
-AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
-        [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
-])dnl PKG_HAVE_DEFINE_WITH_MODULES
-
 # AM_CONDITIONAL                                            -*- Autoconf -*-
 
-# Copyright (C) 1997-2020 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -652,7 +584,7 @@ AC_CONFIG_COMMANDS_PRE(
 Usually this means the macro was only invoked conditionally.]])
 fi])])
 
-# Copyright (C) 2006-2020 Free Software Foundation, Inc.
+# Copyright (C) 2006-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/configure b/configure
index 7aad4fe89e3cbf..5f880d6d8edd96 100755
--- a/configure
+++ b/configure
@@ -1,11 +1,12 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for python 3.12.
+# Generated by GNU Autoconf 2.71 for python 3.13.
 #
 # Report bugs to <https://github.com/python/cpython/issues/>.
 #
 #
-# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+# Copyright (C) 1992-1996, 1998-2017, 2020-2021 Free Software Foundation,
+# Inc.
 #
 #
 # This configure script is free software; the Free Software Foundation
@@ -16,14 +17,16 @@
 
 # Be more Bourne compatible
 DUALCASE=1; export DUALCASE # for MKS sh
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+as_nop=:
+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
   emulate sh
   NULLCMD=:
   # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
   # is contrary to our usage.  Disable this feature.
   alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
-else
+else $as_nop
   case `(set -o) 2>/dev/null` in #(
   *posix*) :
     set -o posix ;; #(
@@ -33,46 +36,46 @@ esac
 fi
 
 
+
+# Reset variables that may have inherited troublesome values from
+# the environment.
+
+# IFS needs to be set, to space, tab, and newline, in precisely that order.
+# (If _AS_PATH_WALK were called with IFS unset, it would have the
+# side effect of setting IFS to empty, thus disabling word splitting.)
+# Quoting is to prevent editors from complaining about space-tab.
 as_nl='
 '
 export as_nl
-# Printing a long string crashes Solaris 7 /usr/bin/printf.
-as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
-# Prefer a ksh shell builtin over an external printf program on Solaris,
-# but without wasting forks for bash or zsh.
-if test -z "$BASH_VERSION$ZSH_VERSION" \
-    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
-  as_echo='print -r --'
-  as_echo_n='print -rn --'
-elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
-  as_echo='printf %s\n'
-  as_echo_n='printf %s'
-else
-  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
-    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
-    as_echo_n='/usr/ucb/echo -n'
-  else
-    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
-    as_echo_n_body='eval
-      arg=$1;
-      case $arg in #(
-      *"$as_nl"*)
-	expr "X$arg" : "X\\(.*\\)$as_nl";
-	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
-      esac;
-      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
-    '
-    export as_echo_n_body
-    as_echo_n='sh -c $as_echo_n_body as_echo'
-  fi
-  export as_echo_body
-  as_echo='sh -c $as_echo_body as_echo'
-fi
+IFS=" ""	$as_nl"
+
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# Ensure predictable behavior from utilities with locale-dependent output.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# We cannot yet rely on "unset" to work, but we need these variables
+# to be unset--not just set to an empty or harmless value--now, to
+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  This construct
+# also avoids known problems related to "unset" and subshell syntax
+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).
+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH
+do eval test \${$as_var+y} \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+
+# Ensure that fds 0, 1, and 2 are open.
+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi
+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi
+if (exec 3>&2)            ; then :; else exec 2>/dev/null; fi
 
 # The user is always right.
-if test "${PATH_SEPARATOR+set}" != set; then
+if ${PATH_SEPARATOR+false} :; then
   PATH_SEPARATOR=:
   (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
     (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
@@ -81,13 +84,6 @@ if test "${PATH_SEPARATOR+set}" != set; then
 fi
 
 
-# IFS
-# We need space, tab and new line, in precisely that order.  Quoting is
-# there to prevent editors from complaining about space-tab.
-# (If _AS_PATH_WALK were called with IFS unset, it would disable word
-# splitting by setting IFS to empty value.)
-IFS=" ""	$as_nl"
-
 # Find who we are.  Look in the path if we contain no directory separator.
 as_myself=
 case $0 in #((
@@ -96,8 +92,12 @@ case $0 in #((
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break
   done
 IFS=$as_save_IFS
 
@@ -109,30 +109,10 @@ if test "x$as_myself" = x; then
   as_myself=$0
 fi
 if test ! -f "$as_myself"; then
-  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
   exit 1
 fi
 
-# Unset variables that we do not need and which cause bugs (e.g. in
-# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
-# suppresses any "Segmentation fault" message there.  '((' could
-# trigger a bug in pdksh 5.2.14.
-for as_var in BASH_ENV ENV MAIL MAILPATH
-do eval test x\${$as_var+set} = xset \
-  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
-done
-PS1='$ '
-PS2='> '
-PS4='+ '
-
-# NLS nuisances.
-LC_ALL=C
-export LC_ALL
-LANGUAGE=C
-export LANGUAGE
-
-# CDPATH.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
 # Use a proper internal environment variable to ensure we don't fall
   # into an infinite loop, continuously re-executing ourselves.
@@ -154,20 +134,22 @@ esac
 exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
 # Admittedly, this is quite paranoid, since all the known shells bail
 # out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-as_fn_exit 255
+printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
   fi
   # We don't want this to propagate to other subprocesses.
           { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
-  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  as_bourne_compatible="as_nop=:
+if test \${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
   emulate sh
   NULLCMD=:
   # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
   # is contrary to our usage.  Disable this feature.
   alias -g '\${1+\"\$@\"}'='\"\$@\"'
   setopt NO_GLOB_SUBST
-else
+else \$as_nop
   case \`(set -o) 2>/dev/null\` in #(
   *posix*) :
     set -o posix ;; #(
@@ -187,42 +169,53 @@ as_fn_success || { exitcode=1; echo as_fn_success failed.; }
 as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
 as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
 as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
-if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+if ( set x; as_fn_ret_success y && test x = \"\$1\" )
+then :
 
-else
+else \$as_nop
   exitcode=1; echo positional parameters were not saved.
 fi
 test x\$exitcode = x0 || exit 1
+blah=\$(echo \$(echo blah))
+test x\"\$blah\" = xblah || exit 1
 test -x / || exit 1"
   as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
   as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
   eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
   test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
 test \$(( 1 + 1 )) = 2 || exit 1"
-  if (eval "$as_required") 2>/dev/null; then :
+  if (eval "$as_required") 2>/dev/null
+then :
   as_have_required=yes
-else
+else $as_nop
   as_have_required=no
 fi
-  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null
+then :
 
-else
+else $as_nop
   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 as_found=false
 for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
   as_found=:
   case $as_dir in #(
 	 /*)
 	   for as_base in sh bash ksh sh5; do
 	     # Try only shells that exist, to save several forks.
-	     as_shell=$as_dir/$as_base
+	     as_shell=$as_dir$as_base
 	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
-		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+		    as_run=a "$as_shell" -c "$as_bourne_compatible""$as_required" 2>/dev/null
+then :
   CONFIG_SHELL=$as_shell as_have_required=yes
-		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+		   if as_run=a "$as_shell" -c "$as_bourne_compatible""$as_suggested" 2>/dev/null
+then :
   break 2
 fi
 fi
@@ -230,14 +223,21 @@ fi
        esac
   as_found=false
 done
-$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
-	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
-  CONFIG_SHELL=$SHELL as_have_required=yes
-fi; }
 IFS=$as_save_IFS
+if $as_found
+then :
+
+else $as_nop
+  if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      as_run=a "$SHELL" -c "$as_bourne_compatible""$as_required" 2>/dev/null
+then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi
+fi
 
 
-      if test "x$CONFIG_SHELL" != x; then :
+      if test "x$CONFIG_SHELL" != x
+then :
   export CONFIG_SHELL
              # We cannot yet assume a decent shell, so we have to provide a
 # neutralization value for shells without unset; and this also
@@ -255,18 +255,19 @@ esac
 exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
 # Admittedly, this is quite paranoid, since all the known shells bail
 # out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
 exit 255
 fi
 
-    if test x$as_have_required = xno; then :
-  $as_echo "$0: This script requires a shell more modern than all"
-  $as_echo "$0: the shells that I found on your system."
-  if test x${ZSH_VERSION+set} = xset ; then
-    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
-    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+    if test x$as_have_required = xno
+then :
+  printf "%s\n" "$0: This script requires a shell more modern than all"
+  printf "%s\n" "$0: the shells that I found on your system."
+  if test ${ZSH_VERSION+y} ; then
+    printf "%s\n" "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    printf "%s\n" "$0: be upgraded to zsh 4.3.4 or later."
   else
-    $as_echo "$0: Please tell bug-autoconf@gnu.org and
+    printf "%s\n" "$0: Please tell bug-autoconf@gnu.org and
 $0: https://github.com/python/cpython/issues/ about your
 $0: system, including any error possibly output before this
 $0: message. Then install a modern shell, or manually run
@@ -294,6 +295,7 @@ as_fn_unset ()
 }
 as_unset=as_fn_unset
 
+
 # as_fn_set_status STATUS
 # -----------------------
 # Set $? to STATUS, without forking.
@@ -311,6 +313,14 @@ as_fn_exit ()
   as_fn_set_status $1
   exit $1
 } # as_fn_exit
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
 
 # as_fn_mkdir_p
 # -------------
@@ -325,7 +335,7 @@ as_fn_mkdir_p ()
     as_dirs=
     while :; do
       case $as_dir in #(
-      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
       *) as_qdir=$as_dir;;
       esac
       as_dirs="'$as_qdir' $as_dirs"
@@ -334,7 +344,7 @@ $as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
 	 X"$as_dir" : 'X\(//\)[^/]' \| \
 	 X"$as_dir" : 'X\(//\)$' \| \
 	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$as_dir" |
+printf "%s\n" X"$as_dir" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -373,12 +383,13 @@ as_fn_executable_p ()
 # advantage of any shell optimizations that allow amortized linear growth over
 # repeated appends, instead of the typical quadratic growth present in naive
 # implementations.
-if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null
+then :
   eval 'as_fn_append ()
   {
     eval $1+=\$2
   }'
-else
+else $as_nop
   as_fn_append ()
   {
     eval $1=\$$1\$2
@@ -390,18 +401,27 @@ fi # as_fn_append
 # Perform arithmetic evaluation on the ARGs, and store the result in the
 # global $as_val. Take advantage of shells that can avoid forks. The arguments
 # must be portable across $(()) and expr.
-if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null
+then :
   eval 'as_fn_arith ()
   {
     as_val=$(( $* ))
   }'
-else
+else $as_nop
   as_fn_arith ()
   {
     as_val=`expr "$@" || test $? -eq 1`
   }
 fi # as_fn_arith
 
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
 
 # as_fn_error STATUS ERROR [LINENO LOG_FD]
 # ----------------------------------------
@@ -413,9 +433,9 @@ as_fn_error ()
   as_status=$1; test $as_status -eq 0 && as_status=1
   if test "$4"; then
     as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
   fi
-  $as_echo "$as_me: error: $2" >&2
+  printf "%s\n" "$as_me: error: $2" >&2
   as_fn_exit $as_status
 } # as_fn_error
 
@@ -442,7 +462,7 @@ as_me=`$as_basename -- "$0" ||
 $as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
 	 X"$0" : 'X\(//\)$' \| \
 	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X/"$0" |
+printf "%s\n" X/"$0" |
     sed '/^.*\/\([^/][^/]*\)\/*$/{
 	    s//\1/
 	    q
@@ -486,7 +506,7 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
       s/-\n.*//
     ' >$as_me.lineno &&
   chmod +x "$as_me.lineno" ||
-    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+    { printf "%s\n" "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
 
   # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
   # already done that, so ensure we don't try to do so again and fall
@@ -500,6 +520,10 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
   exit
 }
 
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
 ECHO_C= ECHO_N= ECHO_T=
 case `echo -n x` in #(((((
 -n*)
@@ -513,6 +537,13 @@ case `echo -n x` in #(((((
   ECHO_N='-n';;
 esac
 
+# For backward compatibility with old third-party macros, we provide
+# the shell variables $as_echo and $as_echo_n.  New code should use
+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
+as_echo='printf %s\n'
+as_echo_n='printf %s'
+
+
 rm -f conf$$ conf$$.exe conf$$.file
 if test -d conf$$.dir; then
   rm -f conf$$.dir/conf$$.file
@@ -580,48 +611,44 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='python'
 PACKAGE_TARNAME='python'
-PACKAGE_VERSION='3.12'
-PACKAGE_STRING='python 3.12'
+PACKAGE_VERSION='3.13'
+PACKAGE_STRING='python 3.13'
 PACKAGE_BUGREPORT='https://github.com/python/cpython/issues/'
 PACKAGE_URL=''
 
 ac_unique_file="Include/object.h"
 # Factoring default headers for most tests.
 ac_includes_default="\
-#include <stdio.h>
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-# include <sys/stat.h>
+#include <stddef.h>
+#ifdef HAVE_STDIO_H
+# include <stdio.h>
 #endif
-#ifdef STDC_HEADERS
+#ifdef HAVE_STDLIB_H
 # include <stdlib.h>
-# include <stddef.h>
-#else
-# ifdef HAVE_STDLIB_H
-#  include <stdlib.h>
-# endif
 #endif
 #ifdef HAVE_STRING_H
-# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
-#  include <memory.h>
-# endif
 # include <string.h>
 #endif
-#ifdef HAVE_STRINGS_H
-# include <strings.h>
-#endif
 #ifdef HAVE_INTTYPES_H
 # include <inttypes.h>
 #endif
 #ifdef HAVE_STDINT_H
 # include <stdint.h>
 #endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif"
 
+ac_header_c_list=
 ac_subst_vars='LTLIBOBJS
 MODULE_BLOCK
 MODULE_XXLIMITED_35_FALSE
@@ -642,6 +669,8 @@ MODULE__TESTBUFFER_FALSE
 MODULE__TESTBUFFER_TRUE
 MODULE__TESTINTERNALCAPI_FALSE
 MODULE__TESTINTERNALCAPI_TRUE
+MODULE__TESTCLINIC_LIMITED_FALSE
+MODULE__TESTCLINIC_LIMITED_TRUE
 MODULE__TESTCLINIC_FALSE
 MODULE__TESTCLINIC_TRUE
 MODULE__TESTCAPI_FALSE
@@ -666,8 +695,6 @@ MODULE__SQLITE3_FALSE
 MODULE__SQLITE3_TRUE
 MODULE_READLINE_FALSE
 MODULE_READLINE_TRUE
-MODULE_NIS_FALSE
-MODULE_NIS_TRUE
 MODULE__GDBM_FALSE
 MODULE__GDBM_TRUE
 MODULE__DBM_FALSE
@@ -680,8 +707,6 @@ MODULE__CURSES_FALSE
 MODULE__CURSES_TRUE
 MODULE__CTYPES_FALSE
 MODULE__CTYPES_TRUE
-MODULE__CRYPT_FALSE
-MODULE__CRYPT_TRUE
 MODULE__BLAKE2_FALSE
 MODULE__BLAKE2_TRUE
 MODULE__SHA3_FALSE
@@ -716,16 +741,12 @@ MODULE_TERMIOS_FALSE
 MODULE_TERMIOS_TRUE
 MODULE_SYSLOG_FALSE
 MODULE_SYSLOG_TRUE
-MODULE_SPWD_FALSE
-MODULE_SPWD_TRUE
 MODULE__SCPROXY_FALSE
 MODULE__SCPROXY_TRUE
 MODULE_RESOURCE_FALSE
 MODULE_RESOURCE_TRUE
 MODULE_PWD_FALSE
 MODULE_PWD_TRUE
-MODULE_OSSAUDIODEV_FALSE
-MODULE_OSSAUDIODEV_TRUE
 MODULE_GRP_FALSE
 MODULE_GRP_TRUE
 MODULE__SOCKET_FALSE
@@ -742,8 +763,6 @@ MODULE_CMATH_FALSE
 MODULE_CMATH_TRUE
 MODULE__STATISTICS_FALSE
 MODULE__STATISTICS_TRUE
-MODULE_AUDIOOP_FALSE
-MODULE_AUDIOOP_TRUE
 MODULE__POSIXSHMEM_FALSE
 MODULE__POSIXSHMEM_TRUE
 MODULE__MULTIPROCESSING_FALSE
@@ -824,8 +843,6 @@ HAVE_GETHOSTBYNAME_R
 HAVE_GETHOSTBYNAME_R_3_ARG
 HAVE_GETHOSTBYNAME_R_5_ARG
 HAVE_GETHOSTBYNAME_R_6_ARG
-LIBCRYPT_LIBS
-LIBCRYPT_CFLAGS
 LIBOBJS
 LIBLZMA_LIBS
 LIBLZMA_CFLAGS
@@ -843,6 +860,8 @@ DTRACE_OBJS
 DTRACE_HEADERS
 DFLAGS
 DTRACE
+WITH_MIMALLOC
+MIMALLOC_HEADERS
 GDBM_LIBS
 GDBM_CFLAGS
 X11_LIBS
@@ -851,8 +870,6 @@ TCLTK_LIBS
 TCLTK_CFLAGS
 LIBSQLITE3_LIBS
 LIBSQLITE3_CFLAGS
-LIBNSL_LIBS
-LIBNSL_CFLAGS
 LIBMPDEC_INTERNAL
 LIBMPDEC_CFLAGS
 MODULE__CTYPES_MALLOC_CLOSURE
@@ -883,10 +900,11 @@ CFLAGS_NODIST
 BASECFLAGS
 CFLAGS_ALIASING
 OPT
+BOLT_APPLY_FLAGS
+BOLT_INSTRUMENT_FLAGS
+BOLT_BINARIES
 MERGE_FDATA
 LLVM_BOLT
-ac_ct_READELF
-READELF
 PREBOLT_RULE
 LLVM_PROF_FOUND
 LLVM_PROFDATA
@@ -1049,6 +1067,7 @@ with_suffix
 enable_shared
 with_static_libpython
 enable_profiling
+enable_gil
 with_pydebug
 with_trace_refs
 enable_pystats
@@ -1071,6 +1090,7 @@ enable_loadable_sqlite_extensions
 with_dbmliborder
 enable_ipv6
 with_doc_strings
+with_mimalloc
 with_pymalloc
 with_freelists
 with_c_locale_coercion
@@ -1105,12 +1125,12 @@ CPPFLAGS
 CPP
 HOSTRUNNER
 PROFILE_TASK
+BOLT_INSTRUMENT_FLAGS
+BOLT_APPLY_FLAGS
 LIBUUID_CFLAGS
 LIBUUID_LIBS
 LIBFFI_CFLAGS
 LIBFFI_LIBS
-LIBNSL_CFLAGS
-LIBNSL_LIBS
 LIBSQLITE3_CFLAGS
 LIBSQLITE3_LIBS
 TCLTK_CFLAGS
@@ -1125,8 +1145,6 @@ BZIP2_CFLAGS
 BZIP2_LIBS
 LIBLZMA_CFLAGS
 LIBLZMA_LIBS
-LIBCRYPT_CFLAGS
-LIBCRYPT_LIBS
 LIBREADLINE_CFLAGS
 LIBREADLINE_LIBS
 LIBEDIT_CFLAGS
@@ -1205,8 +1223,6 @@ do
   *)    ac_optarg=yes ;;
   esac
 
-  # Accept the important Cygnus configure options, so we can diagnose typos.
-
   case $ac_dashdash$ac_option in
   --)
     ac_dashdash=yes ;;
@@ -1247,9 +1263,9 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid feature name: $ac_useropt"
+      as_fn_error $? "invalid feature name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "enable_$ac_useropt"
@@ -1273,9 +1289,9 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid feature name: $ac_useropt"
+      as_fn_error $? "invalid feature name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "enable_$ac_useropt"
@@ -1486,9 +1502,9 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid package name: $ac_useropt"
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "with_$ac_useropt"
@@ -1502,9 +1518,9 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error $? "invalid package name: $ac_useropt"
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "with_$ac_useropt"
@@ -1548,9 +1564,9 @@ Try \`$0 --help' for more information"
 
   *)
     # FIXME: should be removed in autoconf 3.0.
-    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    printf "%s\n" "$as_me: WARNING: you should use --build, --host, --target" >&2
     expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
-      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+      printf "%s\n" "$as_me: WARNING: invalid host type: $ac_option" >&2
     : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
     ;;
 
@@ -1566,7 +1582,7 @@ if test -n "$ac_unrecognized_opts"; then
   case $enable_option_checking in
     no) ;;
     fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
-    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+    *)     printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
   esac
 fi
 
@@ -1630,7 +1646,7 @@ $as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
 	 X"$as_myself" : 'X\(//\)[^/]' \| \
 	 X"$as_myself" : 'X\(//\)$' \| \
 	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$as_myself" |
+printf "%s\n" X"$as_myself" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -1687,7 +1703,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures python 3.12 to adapt to many kinds of systems.
+\`configure' configures python 3.13 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1753,7 +1769,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of python 3.12:";;
+     short | recursive ) echo "Configuration of python 3.13:";;
    esac
   cat <<\_ACEOF
 
@@ -1779,6 +1795,8 @@ Optional Features:
                           no)
   --enable-profiling      enable C-level code profiling with gprof (default is
                           no)
+  --disable-gil           enable experimental support for running without the
+                          GIL (default is no)
   --enable-pystats        enable internal statistics gathering (default is no)
   --enable-optimizations  enable expensive, stable optimizations (PGO, etc.)
                           (default is no)
@@ -1797,9 +1815,9 @@ Optional Features:
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
-  --with-build-python=python3.12
+  --with-build-python=python3.13
                           path to build python binary for cross compiling
-                          (default: _bootstrap_python or python3.12)
+                          (default: _bootstrap_python or python3.13)
   --with-pkg-config=[yes|no|check]
                           use pkg-config to detect build options (default is
                           check)
@@ -1844,8 +1862,8 @@ Optional Packages:
                           select hash algorithm for use in Python/pyhash.c
                           (default is SipHash13)
   --with-tzpath=<list of absolute paths separated by pathsep>
-                           Select the default time zone search path for zoneinfo.TZPATH
-
+                          Select the default time zone search path for
+                          zoneinfo.TZPATH
   --with-libs='lib1 ...'  link against additional libs (default is no)
   --with-system-expat     build pyexpat module using an installed expat
                           library, see Doc/library/pyexpat.rst (default is no)
@@ -1859,6 +1877,8 @@ Optional Packages:
                           value is a colon separated string with the backend
                           names `ndbm', `gdbm' and `bdb'.
   --with-doc-strings      enable documentation strings (default is yes)
+  --with-mimalloc         build with mimalloc memory allocator (default is yes
+                          if C11 stdatomic.h is available.)
   --with-pymalloc         enable specialized mallocs (default is yes)
   --with-freelists        enable object freelists (default is yes)
   --with-c-locale-coercion
@@ -1916,6 +1936,10 @@ Some influential environment variables:
   HOSTRUNNER  Program to run CPython for the host platform
   PROFILE_TASK
               Python args for PGO generation task
+  BOLT_INSTRUMENT_FLAGS
+              Arguments to llvm-bolt when instrumenting binaries
+  BOLT_APPLY_FLAGS
+              Arguments to llvm-bolt when creating a BOLT optimized binary
   LIBUUID_CFLAGS
               C compiler flags for LIBUUID, overriding pkg-config
   LIBUUID_LIBS
@@ -1923,9 +1947,6 @@ Some influential environment variables:
   LIBFFI_CFLAGS
               C compiler flags for LIBFFI, overriding pkg-config
   LIBFFI_LIBS linker flags for LIBFFI, overriding pkg-config
-  LIBNSL_CFLAGS
-              C compiler flags for LIBNSL, overriding pkg-config
-  LIBNSL_LIBS linker flags for LIBNSL, overriding pkg-config
   LIBSQLITE3_CFLAGS
               C compiler flags for LIBSQLITE3, overriding pkg-config
   LIBSQLITE3_LIBS
@@ -1946,10 +1967,6 @@ Some influential environment variables:
               C compiler flags for LIBLZMA, overriding pkg-config
   LIBLZMA_LIBS
               linker flags for LIBLZMA, overriding pkg-config
-  LIBCRYPT_CFLAGS
-              C compiler flags for LIBCRYPT, overriding pkg-config
-  LIBCRYPT_LIBS
-              linker flags for LIBCRYPT, overriding pkg-config
   LIBREADLINE_CFLAGS
               C compiler flags for LIBREADLINE, overriding pkg-config
   LIBREADLINE_LIBS
@@ -1987,9 +2004,9 @@ if test "$ac_init_help" = "recursive"; then
 case "$ac_dir" in
 .) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
 *)
-  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
   # A ".." for each directory in $ac_dir_suffix.
-  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
   case $ac_top_builddir_sub in
   "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
   *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
@@ -2017,7 +2034,8 @@ esac
 ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
 
     cd "$ac_dir" || { ac_status=$?; continue; }
-    # Check for guested configure.
+    # Check for configure.gnu first; this name is used for a wrapper for
+    # Metaconfig's "Configure" on case-insensitive file systems.
     if test -f "$ac_srcdir/configure.gnu"; then
       echo &&
       $SHELL "$ac_srcdir/configure.gnu" --help=recursive
@@ -2025,7 +2043,7 @@ ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
       echo &&
       $SHELL "$ac_srcdir/configure" --help=recursive
     else
-      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+      printf "%s\n" "$as_me: WARNING: no configuration information is in $ac_dir" >&2
     fi || ac_status=$?
     cd "$ac_pwd" || { ac_status=$?; break; }
   done
@@ -2034,10 +2052,10 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-python configure 3.12
-generated by GNU Autoconf 2.69
+python configure 3.13
+generated by GNU Autoconf 2.71
 
-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2021 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -2054,14 +2072,14 @@ fi
 ac_fn_c_try_compile ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  rm -f conftest.$ac_objext
+  rm -f conftest.$ac_objext conftest.beam
   if { { ac_try="$ac_compile"
 case "(($ac_try" in
   *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_compile") 2>conftest.err
   ac_status=$?
   if test -s conftest.err; then
@@ -2069,14 +2087,15 @@ $as_echo "$ac_try_echo"; } >&5
     cat conftest.er1 >&5
     mv -f conftest.er1 conftest.err
   fi
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } && {
 	 test -z "$ac_c_werror_flag" ||
 	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then :
+       } && test -s conftest.$ac_objext
+then :
   ac_retval=0
-else
-  $as_echo "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
 	ac_retval=1
@@ -2098,7 +2117,7 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
   ac_status=$?
   if test -s conftest.err; then
@@ -2106,14 +2125,15 @@ $as_echo "$ac_try_echo"; } >&5
     cat conftest.er1 >&5
     mv -f conftest.er1 conftest.err
   fi
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } > conftest.i && {
 	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
 	 test ! -s conftest.err
-       }; then :
+       }
+then :
   ac_retval=0
-else
-  $as_echo "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
     ac_retval=1
@@ -2123,139 +2143,6 @@ fi
 
 } # ac_fn_c_try_cpp
 
-# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
-# -------------------------------------------------------
-# Tests whether HEADER exists, giving a warning if it cannot be compiled using
-# the include files in INCLUDES and setting the cache variable VAR
-# accordingly.
-ac_fn_c_check_header_mongrel ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if eval \${$3+:} false; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-fi
-eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-else
-  # Is the header compilable?
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
-$as_echo_n "checking $2 usability... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-#include <$2>
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_header_compiler=yes
-else
-  ac_header_compiler=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
-$as_echo "$ac_header_compiler" >&6; }
-
-# Is the header present?
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
-$as_echo_n "checking $2 presence... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <$2>
-_ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
-  ac_header_preproc=yes
-else
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.i conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
-$as_echo "$ac_header_preproc" >&6; }
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
-  yes:no: )
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
-$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
-$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
-    ;;
-  no:yes:* )
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
-$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     check for missing prerequisite headers?" >&5
-$as_echo "$as_me: WARNING: $2:     check for missing prerequisite headers?" >&2;}
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
-$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&5
-$as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
-$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
-( $as_echo "## -------------------------------------------------------- ##
-## Report this to https://github.com/python/cpython/issues/ ##
-## -------------------------------------------------------- ##"
-     ) | sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  eval "$3=\$ac_header_compiler"
-fi
-eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-fi
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_header_mongrel
-
-# ac_fn_c_try_run LINENO
-# ----------------------
-# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
-# that executables *can* be run.
-ac_fn_c_try_run ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if { { ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
-  (eval "$ac_link") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
-  { { case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then :
-  ac_retval=0
-else
-  $as_echo "$as_me: program exited with status $ac_status" >&5
-       $as_echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-       ac_retval=$ac_status
-fi
-  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-  as_fn_set_status $ac_retval
-
-} # ac_fn_c_try_run
-
 # ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
 # -------------------------------------------------------
 # Tests whether HEADER exists and can be compiled using the include files in
@@ -2263,26 +2150,28 @@ fi
 ac_fn_c_check_header_compile ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 #include <$2>
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   eval "$3=yes"
-else
+else $as_nop
   eval "$3=no"
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_header_compile
@@ -2293,14 +2182,14 @@ $as_echo "$ac_res" >&6; }
 ac_fn_c_try_link ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  rm -f conftest.$ac_objext conftest$ac_exeext
+  rm -f conftest.$ac_objext conftest.beam conftest$ac_exeext
   if { { ac_try="$ac_link"
 case "(($ac_try" in
   *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>conftest.err
   ac_status=$?
   if test -s conftest.err; then
@@ -2308,17 +2197,18 @@ $as_echo "$ac_try_echo"; } >&5
     cat conftest.er1 >&5
     mv -f conftest.er1 conftest.err
   fi
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } && {
 	 test -z "$ac_c_werror_flag" ||
 	 test ! -s conftest.err
        } && test -s conftest$ac_exeext && {
 	 test "$cross_compiling" = yes ||
 	 test -x conftest$ac_exeext
-       }; then :
+       }
+then :
   ac_retval=0
-else
-  $as_echo "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
 	ac_retval=1
@@ -2333,6 +2223,49 @@ fi
 
 } # ac_fn_c_try_link
 
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to run conftest.$ac_ext, and return whether this succeeded. Assumes that
+# executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: program exited with status $ac_status" >&5
+       printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
 # ac_fn_c_check_type LINENO TYPE VAR INCLUDES
 # -------------------------------------------
 # Tests whether TYPE exists after having included INCLUDES, setting cache
@@ -2340,17 +2273,18 @@ fi
 ac_fn_c_check_type ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   eval "$3=no"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 if (sizeof ($2))
 	 return 0;
@@ -2358,12 +2292,13 @@ if (sizeof ($2))
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 if (sizeof (($2)))
 	    return 0;
@@ -2371,18 +2306,19 @@ if (sizeof (($2)))
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-else
+else $as_nop
   eval "$3=yes"
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_type
@@ -2401,7 +2337,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 static int test_array [1 - 2 * !(($2) >= 0)];
 test_array [0] = 0;
@@ -2411,14 +2347,15 @@ return test_array [0];
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_lo=0 ac_mid=0
   while :; do
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
 test_array [0] = 0;
@@ -2428,9 +2365,10 @@ return test_array [0];
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_hi=$ac_mid; break
-else
+else $as_nop
   as_fn_arith $ac_mid + 1 && ac_lo=$as_val
 			if test $ac_lo -le $ac_mid; then
 			  ac_lo= ac_hi=
@@ -2438,14 +2376,14 @@ else
 			fi
 			as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   done
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 static int test_array [1 - 2 * !(($2) < 0)];
 test_array [0] = 0;
@@ -2455,14 +2393,15 @@ return test_array [0];
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_hi=-1 ac_mid=-1
   while :; do
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 static int test_array [1 - 2 * !(($2) >= $ac_mid)];
 test_array [0] = 0;
@@ -2472,9 +2411,10 @@ return test_array [0];
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_lo=$ac_mid; break
-else
+else $as_nop
   as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
 			if test $ac_mid -le $ac_hi; then
 			  ac_lo= ac_hi=
@@ -2482,14 +2422,14 @@ else
 			fi
 			as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   done
-else
+else $as_nop
   ac_lo= ac_hi=
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 # Binary search between lo and hi bounds.
 while test "x$ac_lo" != "x$ac_hi"; do
   as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
@@ -2497,7 +2437,7 @@ while test "x$ac_lo" != "x$ac_hi"; do
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
 test_array [0] = 0;
@@ -2507,12 +2447,13 @@ return test_array [0];
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_hi=$ac_mid
-else
+else $as_nop
   as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 done
 case $ac_lo in #((
 ?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
@@ -2522,12 +2463,12 @@ esac
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
-static long int longval () { return $2; }
-static unsigned long int ulongval () { return $2; }
+static long int longval (void) { return $2; }
+static unsigned long int ulongval (void) { return $2; }
 #include <stdio.h>
 #include <stdlib.h>
 int
-main ()
+main (void)
 {
 
   FILE *f = fopen ("conftest.val", "w");
@@ -2555,9 +2496,10 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   echo >>conftest.val; read $3 <conftest.val; ac_retval=0
-else
+else $as_nop
   ac_retval=1
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -2576,11 +2518,12 @@ rm -f conftest.val
 ac_fn_c_check_func ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 /* Define $2 to an innocuous variant, in case <limits.h> declares $2.
@@ -2588,16 +2531,9 @@ else
 #define $2 innocuous_$2
 
 /* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $2 (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+   which can conflict with char $2 (); below.  */
 
+#include <limits.h>
 #undef $2
 
 /* Override any GCC internal prototype to avoid an error.
@@ -2615,47 +2551,51 @@ choke me
 #endif
 
 int
-main ()
+main (void)
 {
 return $2 ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   eval "$3=yes"
-else
+else $as_nop
   eval "$3=no"
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 fi
 eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_func
 
-# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
-# ---------------------------------------------
+# ac_fn_check_decl LINENO SYMBOL VAR INCLUDES EXTRA-OPTIONS FLAG-VAR
+# ------------------------------------------------------------------
 # Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
-# accordingly.
-ac_fn_c_check_decl ()
+# accordingly. Pass EXTRA-OPTIONS to the compiler, using FLAG-VAR.
+ac_fn_check_decl ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   as_decl_name=`echo $2|sed 's/ *(.*//'`
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
+printf %s "checking whether $as_decl_name is declared... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
-$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  eval ac_save_FLAGS=\$$6
+  as_fn_append $6 " $5"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $4
 int
-main ()
+main (void)
 {
 #ifndef $as_decl_name
 #ifdef __cplusplus
@@ -2669,19 +2609,22 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   eval "$3=yes"
-else
+else $as_nop
   eval "$3=no"
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  eval $6=\$ac_save_FLAGS
+
 fi
 eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
-} # ac_fn_c_check_decl
+} # ac_fn_check_decl
 
 # ac_fn_c_check_member LINENO AGGR MEMBER VAR INCLUDES
 # ----------------------------------------------------
@@ -2690,16 +2633,17 @@ $as_echo "$ac_res" >&6; }
 ac_fn_c_check_member ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5
-$as_echo_n "checking for $2.$3... " >&6; }
-if eval \${$4+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5
+printf %s "checking for $2.$3... " >&6; }
+if eval test \${$4+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $5
 int
-main ()
+main (void)
 {
 static $2 ac_aggr;
 if (ac_aggr.$3)
@@ -2708,14 +2652,15 @@ return 0;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   eval "$4=yes"
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $5
 int
-main ()
+main (void)
 {
 static $2 ac_aggr;
 if (sizeof ac_aggr.$3)
@@ -2724,29 +2669,50 @@ return 0;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   eval "$4=yes"
-else
+else $as_nop
   eval "$4=no"
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 eval ac_res=\$$4
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_member
+ac_configure_args_raw=
+for ac_arg
+do
+  case $ac_arg in
+  *\'*)
+    ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  as_fn_append ac_configure_args_raw " '$ac_arg'"
+done
+
+case $ac_configure_args_raw in
+  *$as_nl*)
+    ac_safe_unquote= ;;
+  *)
+    ac_unsafe_z='|&;<>()$`\\"*?[ ''	' # This string ends in space, tab.
+    ac_unsafe_a="$ac_unsafe_z#~"
+    ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g"
+    ac_configure_args_raw=`      printf "%s\n" "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;
+esac
+
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by python $as_me 3.12, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+It was created by python $as_me 3.13, which was
+generated by GNU Autoconf 2.71.  Invocation command line was
 
-  $ $0 $@
+  $ $0$ac_configure_args_raw
 
 _ACEOF
 exec 5>>config.log
@@ -2779,8 +2745,12 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    $as_echo "PATH: $as_dir"
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    printf "%s\n" "PATH: $as_dir"
   done
 IFS=$as_save_IFS
 
@@ -2815,7 +2785,7 @@ do
     | -silent | --silent | --silen | --sile | --sil)
       continue ;;
     *\'*)
-      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
     esac
     case $ac_pass in
     1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
@@ -2850,11 +2820,13 @@ done
 # WARNING: Use '\'' to represent an apostrophe within the trap.
 # WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
 trap 'exit_status=$?
+  # Sanitize IFS.
+  IFS=" ""	$as_nl"
   # Save into config.log some information that might help in debugging.
   {
     echo
 
-    $as_echo "## ---------------- ##
+    printf "%s\n" "## ---------------- ##
 ## Cache variables. ##
 ## ---------------- ##"
     echo
@@ -2865,8 +2837,8 @@ trap 'exit_status=$?
     case $ac_val in #(
     *${as_nl}*)
       case $ac_var in #(
-      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
-$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
       esac
       case $ac_var in #(
       _ | IFS | as_nl) ;; #(
@@ -2890,7 +2862,7 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
 )
     echo
 
-    $as_echo "## ----------------- ##
+    printf "%s\n" "## ----------------- ##
 ## Output variables. ##
 ## ----------------- ##"
     echo
@@ -2898,14 +2870,14 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
     do
       eval ac_val=\$$ac_var
       case $ac_val in
-      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
       esac
-      $as_echo "$ac_var='\''$ac_val'\''"
+      printf "%s\n" "$ac_var='\''$ac_val'\''"
     done | sort
     echo
 
     if test -n "$ac_subst_files"; then
-      $as_echo "## ------------------- ##
+      printf "%s\n" "## ------------------- ##
 ## File substitutions. ##
 ## ------------------- ##"
       echo
@@ -2913,15 +2885,15 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
       do
 	eval ac_val=\$$ac_var
 	case $ac_val in
-	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	*\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
 	esac
-	$as_echo "$ac_var='\''$ac_val'\''"
+	printf "%s\n" "$ac_var='\''$ac_val'\''"
       done | sort
       echo
     fi
 
     if test -s confdefs.h; then
-      $as_echo "## ----------- ##
+      printf "%s\n" "## ----------- ##
 ## confdefs.h. ##
 ## ----------- ##"
       echo
@@ -2929,8 +2901,8 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
       echo
     fi
     test "$ac_signal" != 0 &&
-      $as_echo "$as_me: caught signal $ac_signal"
-    $as_echo "$as_me: exit $exit_status"
+      printf "%s\n" "$as_me: caught signal $ac_signal"
+    printf "%s\n" "$as_me: exit $exit_status"
   } >&5
   rm -f core *.core core.conftest.* &&
     rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
@@ -2944,63 +2916,48 @@ ac_signal=0
 # confdefs.h avoids OS command line length limits that DEFS can exceed.
 rm -f -r conftest* confdefs.h
 
-$as_echo "/* confdefs.h */" > confdefs.h
+printf "%s\n" "/* confdefs.h */" > confdefs.h
 
 # Predefined preprocessor variables.
 
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_NAME "$PACKAGE_NAME"
-_ACEOF
+printf "%s\n" "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h
 
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
-_ACEOF
+printf "%s\n" "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h
 
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_VERSION "$PACKAGE_VERSION"
-_ACEOF
+printf "%s\n" "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h
 
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_STRING "$PACKAGE_STRING"
-_ACEOF
+printf "%s\n" "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h
 
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
-_ACEOF
+printf "%s\n" "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h
 
-cat >>confdefs.h <<_ACEOF
-#define PACKAGE_URL "$PACKAGE_URL"
-_ACEOF
+printf "%s\n" "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h
 
 
 # Let the site file select an alternate cache file if it wants to.
 # Prefer an explicitly selected file to automatically selected ones.
-ac_site_file1=NONE
-ac_site_file2=NONE
 if test -n "$CONFIG_SITE"; then
-  # We do not want a PATH search for config.site.
-  case $CONFIG_SITE in #((
-    -*)  ac_site_file1=./$CONFIG_SITE;;
-    */*) ac_site_file1=$CONFIG_SITE;;
-    *)   ac_site_file1=./$CONFIG_SITE;;
-  esac
+  ac_site_files="$CONFIG_SITE"
 elif test "x$prefix" != xNONE; then
-  ac_site_file1=$prefix/share/config.site
-  ac_site_file2=$prefix/etc/config.site
+  ac_site_files="$prefix/share/config.site $prefix/etc/config.site"
 else
-  ac_site_file1=$ac_default_prefix/share/config.site
-  ac_site_file2=$ac_default_prefix/etc/config.site
+  ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
 fi
-for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+
+for ac_site_file in $ac_site_files
 do
-  test "x$ac_site_file" = xNONE && continue
-  if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
-$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+  case $ac_site_file in #(
+  */*) :
+     ;; #(
+  *) :
+    ac_site_file=./$ac_site_file ;;
+esac
+  if test -f "$ac_site_file" && test -r "$ac_site_file"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}
     sed 's/^/| /' "$ac_site_file" >&5
     . "$ac_site_file" \
-      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "failed to load site script $ac_site_file
 See \`config.log' for more details" "$LINENO" 5; }
   fi
@@ -3010,75 +2967,493 @@ if test -r "$cache_file"; then
   # Some versions of bash will fail to source /dev/null (special files
   # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
   if test /dev/null != "$cache_file" && test -f "$cache_file"; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
-$as_echo "$as_me: loading cache $cache_file" >&6;}
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+printf "%s\n" "$as_me: loading cache $cache_file" >&6;}
     case $cache_file in
       [\\/]* | ?:[\\/]* ) . "$cache_file";;
       *)                      . "./$cache_file";;
     esac
   fi
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
-$as_echo "$as_me: creating cache $cache_file" >&6;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+printf "%s\n" "$as_me: creating cache $cache_file" >&6;}
   >$cache_file
 fi
 
-# Check that the precious variables saved in the cache have kept the same
-# value.
-ac_cache_corrupted=false
-for ac_var in $ac_precious_vars; do
-  eval ac_old_set=\$ac_cv_env_${ac_var}_set
-  eval ac_new_set=\$ac_env_${ac_var}_set
-  eval ac_old_val=\$ac_cv_env_${ac_var}_value
-  eval ac_new_val=\$ac_env_${ac_var}_value
-  case $ac_old_set,$ac_new_set in
-    set,)
-      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
-$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
-      ac_cache_corrupted=: ;;
-    ,set)
-      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
-$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
-      ac_cache_corrupted=: ;;
-    ,);;
-    *)
-      if test "x$ac_old_val" != "x$ac_new_val"; then
-	# differences in whitespace do not lead to failure.
-	ac_old_val_w=`echo x $ac_old_val`
-	ac_new_val_w=`echo x $ac_new_val`
-	if test "$ac_old_val_w" != "$ac_new_val_w"; then
-	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
-$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
-	  ac_cache_corrupted=:
-	else
-	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
-$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
-	  eval $ac_var=\$ac_old_val
-	fi
-	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
-$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
-	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
-$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
-      fi;;
-  esac
-  # Pass precious variables to config.status.
-  if test "$ac_new_set" = set; then
-    case $ac_new_val in
-    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
-    *) ac_arg=$ac_var=$ac_new_val ;;
-    esac
-    case " $ac_configure_args " in
-      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
-      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
-    esac
-  fi
-done
-if $ac_cache_corrupted; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
-$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
-  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+# Test code for whether the C compiler supports C89 (global declarations)
+ac_c_conftest_c89_globals='
+/* Does the compiler advertise C89 conformance?
+   Do not test the value of __STDC__, because some compilers set it to 0
+   while being otherwise adequately conformant. */
+#if !defined __STDC__
+# error "Compiler does not advertise C89 conformance"
+#endif
+
+#include <stddef.h>
+#include <stdarg.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7 src/conf.sh.  */
+struct buf { int x; };
+struct buf * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not \xHH hex character constants.
+   These do not provoke an error unfortunately, instead are silently treated
+   as an "x".  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously \x00 != x always comes out true, for an
+   array size at least.  It is necessary to write \x00 == 0 to get something
+   that is true only with -std.  */
+int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) '\''x'\''
+int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int),
+               int, int);'
+
+# Test code for whether the C compiler supports C89 (body of main).
+ac_c_conftest_c89_main='
+ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);
+'
+
+# Test code for whether the C compiler supports C99 (global declarations)
+ac_c_conftest_c99_globals='
+// Does the compiler advertise C99 conformance?
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L
+# error "Compiler does not advertise C99 conformance"
+#endif
+
+#include <stdbool.h>
+extern int puts (const char *);
+extern int printf (const char *, ...);
+extern int dprintf (int, const char *, ...);
+extern void *malloc (size_t);
+
+// Check varargs macros.  These examples are taken from C99 6.10.3.5.
+// dprintf is used instead of fprintf to avoid needing to declare
+// FILE and stderr.
+#define debug(...) dprintf (2, __VA_ARGS__)
+#define showlist(...) puts (#__VA_ARGS__)
+#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
+static void
+test_varargs_macros (void)
+{
+  int x = 1234;
+  int y = 5678;
+  debug ("Flag");
+  debug ("X = %d\n", x);
+  showlist (The first, second, and third items.);
+  report (x>y, "x is %d but y is %d", x, y);
+}
+
+// Check long long types.
+#define BIG64 18446744073709551615ull
+#define BIG32 4294967295ul
+#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
+#if !BIG_OK
+  #error "your preprocessor is broken"
+#endif
+#if BIG_OK
+#else
+  #error "your preprocessor is broken"
+#endif
+static long long int bignum = -9223372036854775807LL;
+static unsigned long long int ubignum = BIG64;
+
+struct incomplete_array
+{
+  int datasize;
+  double data[];
+};
+
+struct named_init {
+  int number;
+  const wchar_t *name;
+  double average;
+};
+
+typedef const char *ccp;
+
+static inline int
+test_restrict (ccp restrict text)
+{
+  // See if C++-style comments work.
+  // Iterate through items via the restricted pointer.
+  // Also check for declarations in for loops.
+  for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)
+    continue;
+  return 0;
+}
+
+// Check varargs and va_copy.
+static bool
+test_varargs (const char *format, ...)
+{
+  va_list args;
+  va_start (args, format);
+  va_list args_copy;
+  va_copy (args_copy, args);
+
+  const char *str = "";
+  int number = 0;
+  float fnumber = 0;
+
+  while (*format)
+    {
+      switch (*format++)
+	{
+	case '\''s'\'': // string
+	  str = va_arg (args_copy, const char *);
+	  break;
+	case '\''d'\'': // int
+	  number = va_arg (args_copy, int);
+	  break;
+	case '\''f'\'': // float
+	  fnumber = va_arg (args_copy, double);
+	  break;
+	default:
+	  break;
+	}
+    }
+  va_end (args_copy);
+  va_end (args);
+
+  return *str && number && fnumber;
+}
+'
+
+# Test code for whether the C compiler supports C99 (body of main).
+ac_c_conftest_c99_main='
+  // Check bool.
+  _Bool success = false;
+  success |= (argc != 0);
+
+  // Check restrict.
+  if (test_restrict ("String literal") == 0)
+    success = true;
+  char *restrict newvar = "Another string";
+
+  // Check varargs.
+  success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);
+  test_varargs_macros ();
+
+  // Check flexible array members.
+  struct incomplete_array *ia =
+    malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
+  ia->datasize = 10;
+  for (int i = 0; i < ia->datasize; ++i)
+    ia->data[i] = i * 1.234;
+
+  // Check named initializers.
+  struct named_init ni = {
+    .number = 34,
+    .name = L"Test wide string",
+    .average = 543.34343,
+  };
+
+  ni.number = 58;
+
+  int dynamic_array[ni.number];
+  dynamic_array[0] = argv[0][0];
+  dynamic_array[ni.number - 1] = 543;
+
+  // work around unused variable warnings
+  ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''
+	 || dynamic_array[ni.number - 1] != 543);
+'
+
+# Test code for whether the C compiler supports C11 (global declarations)
+ac_c_conftest_c11_globals='
+// Does the compiler advertise C11 conformance?
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
+# error "Compiler does not advertise C11 conformance"
+#endif
+
+// Check _Alignas.
+char _Alignas (double) aligned_as_double;
+char _Alignas (0) no_special_alignment;
+extern char aligned_as_int;
+char _Alignas (0) _Alignas (int) aligned_as_int;
+
+// Check _Alignof.
+enum
+{
+  int_alignment = _Alignof (int),
+  int_array_alignment = _Alignof (int[100]),
+  char_alignment = _Alignof (char)
+};
+_Static_assert (0 < -_Alignof (int), "_Alignof is signed");
+
+// Check _Noreturn.
+int _Noreturn does_not_return (void) { for (;;) continue; }
+
+// Check _Static_assert.
+struct test_static_assert
+{
+  int x;
+  _Static_assert (sizeof (int) <= sizeof (long int),
+                  "_Static_assert does not work in struct");
+  long int y;
+};
+
+// Check UTF-8 literals.
+#define u8 syntax error!
+char const utf8_literal[] = u8"happens to be ASCII" "another string";
+
+// Check duplicate typedefs.
+typedef long *long_ptr;
+typedef long int *long_ptr;
+typedef long_ptr long_ptr;
+
+// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1.
+struct anonymous
+{
+  union {
+    struct { int i; int j; };
+    struct { int k; long int l; } w;
+  };
+  int m;
+} v1;
+'
+
+# Test code for whether the C compiler supports C11 (body of main).
+ac_c_conftest_c11_main='
+  _Static_assert ((offsetof (struct anonymous, i)
+		   == offsetof (struct anonymous, w.k)),
+		  "Anonymous union alignment botch");
+  v1.i = 2;
+  v1.w.k = 5;
+  ok |= v1.i != 5;
+'
+
+# Test code for whether the C compiler supports C11 (complete).
+ac_c_conftest_c11_program="${ac_c_conftest_c89_globals}
+${ac_c_conftest_c99_globals}
+${ac_c_conftest_c11_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  ${ac_c_conftest_c99_main}
+  ${ac_c_conftest_c11_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C99 (complete).
+ac_c_conftest_c99_program="${ac_c_conftest_c89_globals}
+${ac_c_conftest_c99_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  ${ac_c_conftest_c99_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C89 (complete).
+ac_c_conftest_c89_program="${ac_c_conftest_c89_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  return ok;
+}
+"
+
+as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"
+as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"
+as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"
+as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"
+as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"
+as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"
+as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"
+as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"
+as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"
+as_fn_append ac_header_c_list " wchar.h wchar_h HAVE_WCHAR_H"
+as_fn_append ac_header_c_list " minix/config.h minix_config_h HAVE_MINIX_CONFIG_H"
+
+# Auxiliary files required by this configure script.
+ac_aux_files="install-sh config.guess config.sub"
+
+# Locations in which to look for auxiliary files.
+ac_aux_dir_candidates="${srcdir}${PATH_SEPARATOR}${srcdir}/..${PATH_SEPARATOR}${srcdir}/../.."
+
+# Search for a directory containing all of the required auxiliary files,
+# $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates.
+# If we don't find one directory that contains all the files we need,
+# we report the set of missing files from the *first* directory in
+# $ac_aux_dir_candidates and give up.
+ac_missing_aux_files=""
+ac_first_candidate=:
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in $ac_aux_dir_candidates
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+  as_found=:
+
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}:  trying $as_dir" >&5
+  ac_aux_dir_found=yes
+  ac_install_sh=
+  for ac_aux in $ac_aux_files
+  do
+    # As a special case, if "install-sh" is required, that requirement
+    # can be satisfied by any of "install-sh", "install.sh", or "shtool",
+    # and $ac_install_sh is set appropriately for whichever one is found.
+    if test x"$ac_aux" = x"install-sh"
+    then
+      if test -f "${as_dir}install-sh"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install-sh found" >&5
+        ac_install_sh="${as_dir}install-sh -c"
+      elif test -f "${as_dir}install.sh"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install.sh found" >&5
+        ac_install_sh="${as_dir}install.sh -c"
+      elif test -f "${as_dir}shtool"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}shtool found" >&5
+        ac_install_sh="${as_dir}shtool install -c"
+      else
+        ac_aux_dir_found=no
+        if $ac_first_candidate; then
+          ac_missing_aux_files="${ac_missing_aux_files} install-sh"
+        else
+          break
+        fi
+      fi
+    else
+      if test -f "${as_dir}${ac_aux}"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}${ac_aux} found" >&5
+      else
+        ac_aux_dir_found=no
+        if $ac_first_candidate; then
+          ac_missing_aux_files="${ac_missing_aux_files} ${ac_aux}"
+        else
+          break
+        fi
+      fi
+    fi
+  done
+  if test "$ac_aux_dir_found" = yes; then
+    ac_aux_dir="$as_dir"
+    break
+  fi
+  ac_first_candidate=false
+
+  as_found=false
+done
+IFS=$as_save_IFS
+if $as_found
+then :
+
+else $as_nop
+  as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5
+fi
+
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+if test -f "${ac_aux_dir}config.guess"; then
+  ac_config_guess="$SHELL ${ac_aux_dir}config.guess"
+fi
+if test -f "${ac_aux_dir}config.sub"; then
+  ac_config_sub="$SHELL ${ac_aux_dir}config.sub"
+fi
+if test -f "$ac_aux_dir/configure"; then
+  ac_configure="$SHELL ${ac_aux_dir}configure"
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+printf "%s\n" "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+printf "%s\n" "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+printf "%s\n" "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`${MAKE-make} distclean' and/or \`rm $cache_file'
+	    and start over" "$LINENO" 5
 fi
 ## -------------------- ##
 ## Main body of script. ##
@@ -3123,11 +3498,12 @@ if test -e $srcdir/.git
 then
 # Extract the first word of "git", so it can be a program name with args.
 set dummy git; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_HAS_GIT+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_HAS_GIT+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$HAS_GIT"; then
   ac_cv_prog_HAS_GIT="$HAS_GIT" # Let the user override the test.
 else
@@ -3135,11 +3511,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_HAS_GIT="found"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3151,11 +3531,11 @@ fi
 fi
 HAS_GIT=$ac_cv_prog_HAS_GIT
 if test -n "$HAS_GIT"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $HAS_GIT" >&5
-$as_echo "$HAS_GIT" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $HAS_GIT" >&5
+printf "%s\n" "$HAS_GIT" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -3177,55 +3557,30 @@ fi
 ac_config_headers="$ac_config_headers pyconfig.h"
 
 
-ac_aux_dir=
-for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
-  if test -f "$ac_dir/install-sh"; then
-    ac_aux_dir=$ac_dir
-    ac_install_sh="$ac_aux_dir/install-sh -c"
-    break
-  elif test -f "$ac_dir/install.sh"; then
-    ac_aux_dir=$ac_dir
-    ac_install_sh="$ac_aux_dir/install.sh -c"
-    break
-  elif test -f "$ac_dir/shtool"; then
-    ac_aux_dir=$ac_dir
-    ac_install_sh="$ac_aux_dir/shtool install -c"
-    break
-  fi
-done
-if test -z "$ac_aux_dir"; then
-  as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
-fi
 
-# These three variables are undocumented and unsupported,
-# and are intended to be withdrawn in a future Autoconf release.
-# They can cause serious problems if a builder's source tree is in a directory
-# whose full name contains unusual characters.
-ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
-ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
-ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
-# Make sure we can run config.sub.
-$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
-  as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+  # Make sure we can run config.sub.
+$SHELL "${ac_aux_dir}config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error $? "cannot run $SHELL ${ac_aux_dir}config.sub" "$LINENO" 5
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
-$as_echo_n "checking build system type... " >&6; }
-if ${ac_cv_build+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+printf %s "checking build system type... " >&6; }
+if test ${ac_cv_build+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_build_alias=$build_alias
 test "x$ac_build_alias" = x &&
-  ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+  ac_build_alias=`$SHELL "${ac_aux_dir}config.guess"`
 test "x$ac_build_alias" = x &&
   as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
-ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
-  as_fn_error $? "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+ac_cv_build=`$SHELL "${ac_aux_dir}config.sub" $ac_build_alias` ||
+  as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $ac_build_alias failed" "$LINENO" 5
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
-$as_echo "$ac_cv_build" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+printf "%s\n" "$ac_cv_build" >&6; }
 case $ac_cv_build in
 *-*-*) ;;
 *) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
@@ -3244,21 +3599,22 @@ IFS=$ac_save_IFS
 case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
-$as_echo_n "checking host system type... " >&6; }
-if ${ac_cv_host+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+printf %s "checking host system type... " >&6; }
+if test ${ac_cv_host+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test "x$host_alias" = x; then
   ac_cv_host=$ac_cv_build
 else
-  ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
-    as_fn_error $? "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+  ac_cv_host=`$SHELL "${ac_aux_dir}config.sub" $host_alias` ||
+    as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $host_alias failed" "$LINENO" 5
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
-$as_echo "$ac_cv_host" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+printf "%s\n" "$ac_cv_host" >&6; }
 case $ac_cv_host in
 *-*-*) ;;
 *) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
@@ -3280,7 +3636,8 @@ case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
 
 
 
-if test "x$cross_compiling" = xmaybe; then :
+if test "x$cross_compiling" = xmaybe
+then :
   as_fn_error $? "Cross compiling required --host=HOST-TUPLE and --build=ARCH" "$LINENO" 5
 
 fi
@@ -3290,15 +3647,18 @@ rm -f pybuilddir.txt
 
 
 # Check whether --with-build-python was given.
-if test "${with_build_python+set}" = set; then :
+if test ${with_build_python+y}
+then :
   withval=$with_build_python;
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-build-python" >&5
-$as_echo_n "checking for --with-build-python... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-build-python" >&5
+printf %s "checking for --with-build-python... " >&6; }
 
-    if test "x$with_build_python" = xyes; then :
+    if test "x$with_build_python" = xyes
+then :
   with_build_python=python$PACKAGE_VERSION
 fi
-    if test "x$with_build_python" = xno; then :
+    if test "x$with_build_python" = xno
+then :
   as_fn_error $? "invalid --with-build-python option: expected path or \"yes\", not \"no\"" "$LINENO" 5
 fi
 
@@ -3312,12 +3672,13 @@ fi
         ac_cv_prog_PYTHON_FOR_REGEN=$with_build_python
     PYTHON_FOR_FREEZE="$with_build_python"
     PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`:)$(srcdir)/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) '$with_build_python
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_build_python" >&5
-$as_echo "$with_build_python" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_build_python" >&5
+printf "%s\n" "$with_build_python" >&6; }
 
-else
+else $as_nop
 
-    if test "x$cross_compiling" = xyes; then :
+    if test "x$cross_compiling" = xyes
+then :
   as_fn_error $? "Cross compiling requires --with-build-python" "$LINENO" 5
 
 fi
@@ -3329,13 +3690,14 @@ fi
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for Python interpreter freezing" >&5
-$as_echo_n "checking for Python interpreter freezing... " >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $PYTHON_FOR_FREEZE" >&5
-$as_echo "$PYTHON_FOR_FREEZE" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for Python interpreter freezing" >&5
+printf %s "checking for Python interpreter freezing... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON_FOR_FREEZE" >&5
+printf "%s\n" "$PYTHON_FOR_FREEZE" >&6; }
 
 
-if test "x$cross_compiling" = xyes; then :
+if test "x$cross_compiling" = xyes
+then :
 
         FREEZE_MODULE_BOOTSTRAP='$(PYTHON_FOR_FREEZE) $(srcdir)/Programs/_freeze_module.py'
     FREEZE_MODULE_BOOTSTRAP_DEPS='$(srcdir)/Programs/_freeze_module.py'
@@ -3343,7 +3705,7 @@ if test "x$cross_compiling" = xyes; then :
     FREEZE_MODULE_DEPS='$(FREEZE_MODULE_BOOTSTRAP_DEPS)'
     PYTHON_FOR_BUILD_DEPS=''
 
-else
+else $as_nop
 
         FREEZE_MODULE_BOOTSTRAP='./Programs/_freeze_module'
     FREEZE_MODULE_BOOTSTRAP_DEPS="Programs/_freeze_module"
@@ -3359,15 +3721,16 @@ fi
 
 
 
-for ac_prog in python$PACKAGE_VERSION python3.12 python3.11 python3.10 python3 python
+for ac_prog in python$PACKAGE_VERSION python3.13 python3.12 python3.11 python3.10 python3 python
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_PYTHON_FOR_REGEN+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_PYTHON_FOR_REGEN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$PYTHON_FOR_REGEN"; then
   ac_cv_prog_PYTHON_FOR_REGEN="$PYTHON_FOR_REGEN" # Let the user override the test.
 else
@@ -3375,11 +3738,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_PYTHON_FOR_REGEN="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3390,11 +3757,11 @@ fi
 fi
 PYTHON_FOR_REGEN=$ac_cv_prog_PYTHON_FOR_REGEN
 if test -n "$PYTHON_FOR_REGEN"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PYTHON_FOR_REGEN" >&5
-$as_echo "$PYTHON_FOR_REGEN" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON_FOR_REGEN" >&5
+printf "%s\n" "$PYTHON_FOR_REGEN" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -3404,14 +3771,14 @@ test -n "$PYTHON_FOR_REGEN" || PYTHON_FOR_REGEN="python3"
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking Python for regen version" >&5
-$as_echo_n "checking Python for regen version... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Python for regen version" >&5
+printf %s "checking Python for regen version... " >&6; }
 if command -v "$PYTHON_FOR_REGEN" >/dev/null 2>&1; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $($PYTHON_FOR_REGEN -V 2>/dev/null)" >&5
-$as_echo "$($PYTHON_FOR_REGEN -V 2>/dev/null)" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $($PYTHON_FOR_REGEN -V 2>/dev/null)" >&5
+printf "%s\n" "$($PYTHON_FOR_REGEN -V 2>/dev/null)" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: missing" >&5
-$as_echo "missing" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: missing" >&5
+printf "%s\n" "missing" >&6; }
 fi
 
 
@@ -3429,7 +3796,7 @@ rm confdefs.h
 mv confdefs.h.new confdefs.h
 
 
-VERSION=3.12
+VERSION=3.13
 
 # Version number of Python's own shared library file.
 
@@ -3439,21 +3806,21 @@ SOVERSION=1.0
 # certain features on NetBSD, so we need _NETBSD_SOURCE to re-enable
 # them.
 
-$as_echo "#define _NETBSD_SOURCE 1" >>confdefs.h
+printf "%s\n" "#define _NETBSD_SOURCE 1" >>confdefs.h
 
 
 # The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables
 # certain features on FreeBSD, so we need __BSD_VISIBLE to re-enable
 # them.
 
-$as_echo "#define __BSD_VISIBLE 1" >>confdefs.h
+printf "%s\n" "#define __BSD_VISIBLE 1" >>confdefs.h
 
 
 # The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables
 # certain features on Mac OS X, so we need _DARWIN_C_SOURCE to re-enable
 # them.
 
-$as_echo "#define _DARWIN_C_SOURCE 1" >>confdefs.h
+printf "%s\n" "#define _DARWIN_C_SOURCE 1" >>confdefs.h
 
 
 
@@ -3465,9 +3832,10 @@ CONFIG_ARGS="$ac_configure_args"
 
 
 # Check whether --with-pkg-config was given.
-if test "${with_pkg_config+set}" = set; then :
+if test ${with_pkg_config+y}
+then :
   withval=$with_pkg_config;
-else
+else $as_nop
   with_pkg_config=check
 
 fi
@@ -3491,11 +3859,12 @@ if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
 	if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
 set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_PKG_CONFIG+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_PKG_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $PKG_CONFIG in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
@@ -3505,11 +3874,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_PKG_CONFIG="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3521,11 +3894,11 @@ esac
 fi
 PKG_CONFIG=$ac_cv_path_PKG_CONFIG
 if test -n "$PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
-$as_echo "$PKG_CONFIG" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+printf "%s\n" "$PKG_CONFIG" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -3534,11 +3907,12 @@ if test -z "$ac_cv_path_PKG_CONFIG"; then
   ac_pt_PKG_CONFIG=$PKG_CONFIG
   # Extract the first word of "pkg-config", so it can be a program name with args.
 set dummy pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_PKG_CONFIG+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_PKG_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_PKG_CONFIG in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
@@ -3548,11 +3922,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_PKG_CONFIG="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3564,11 +3942,11 @@ esac
 fi
 ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
 if test -n "$ac_pt_PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
-$as_echo "$ac_pt_PKG_CONFIG" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
+printf "%s\n" "$ac_pt_PKG_CONFIG" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_PKG_CONFIG" = x; then
@@ -3576,8 +3954,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     PKG_CONFIG=$ac_pt_PKG_CONFIG
@@ -3589,14 +3967,14 @@ fi
 fi
 if test -n "$PKG_CONFIG"; then
 	_pkg_min_version=0.9.0
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
-$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
+printf %s "checking pkg-config is at least version $_pkg_min_version... " >&6; }
 	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	else
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 		PKG_CONFIG=""
 	fi
 fi
@@ -3615,10 +3993,11 @@ if test "$with_pkg_config" = yes -a -z "$PKG_CONFIG"; then
   as_fn_error $? "pkg-config is required" "$LINENO" 5]
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-universalsdk" >&5
-$as_echo_n "checking for --enable-universalsdk... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-universalsdk" >&5
+printf %s "checking for --enable-universalsdk... " >&6; }
 # Check whether --enable-universalsdk was given.
-if test "${enable_universalsdk+set}" = set; then :
+if test ${enable_universalsdk+y}
+then :
   enableval=$enable_universalsdk;
 	case $enableval in
 	yes)
@@ -3650,7 +4029,7 @@ if test "${enable_universalsdk+set}" = set; then :
 	esac
 
 
-else
+else $as_nop
 
    	UNIVERSALSDK=
 	enable_universalsdk=
@@ -3659,11 +4038,11 @@ fi
 
 if test -n "${UNIVERSALSDK}"
 then
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${UNIVERSALSDK}" >&5
-$as_echo "${UNIVERSALSDK}" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ${UNIVERSALSDK}" >&5
+printf "%s\n" "${UNIVERSALSDK}" >&6; }
 else
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -3686,11 +4065,12 @@ fi
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-universal-archs" >&5
-$as_echo_n "checking for --with-universal-archs... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-universal-archs" >&5
+printf %s "checking for --with-universal-archs... " >&6; }
 
 # Check whether --with-universal-archs was given.
-if test "${with_universal_archs+set}" = set; then :
+if test ${with_universal_archs+y}
+then :
   withval=$with_universal_archs;
 	UNIVERSAL_ARCHS="$withval"
 
@@ -3698,22 +4078,23 @@ fi
 
 if test -n "${UNIVERSALSDK}"
 then
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${UNIVERSAL_ARCHS}" >&5
-$as_echo "${UNIVERSAL_ARCHS}" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ${UNIVERSAL_ARCHS}" >&5
+printf "%s\n" "${UNIVERSAL_ARCHS}" >&6; }
 else
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
 # Check whether --with-framework-name was given.
-if test "${with_framework_name+set}" = set; then :
+if test ${with_framework_name+y}
+then :
   withval=$with_framework_name;
     PYTHONFRAMEWORK=${withval}
     PYTHONFRAMEWORKDIR=${withval}.framework
     PYTHONFRAMEWORKIDENTIFIER=org.python.`echo $withval | tr 'A-Z' 'a-z'`
 
-else
+else $as_nop
 
     PYTHONFRAMEWORK=Python
     PYTHONFRAMEWORKDIR=Python.framework
@@ -3722,7 +4103,8 @@ else
 fi
 
 # Check whether --enable-framework was given.
-if test "${enable_framework+set}" = set; then :
+if test ${enable_framework+y}
+then :
   enableval=$enable_framework;
 	case $enableval in
 	yes)
@@ -3811,7 +4193,7 @@ if test "${enable_framework+set}" = set; then :
 
 	esac
 
-else
+else $as_nop
 
 	PYTHONFRAMEWORK=
 	PYTHONFRAMEWORKDIR=no-framework
@@ -3846,15 +4228,13 @@ fi
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define _PYTHONFRAMEWORK "${PYTHONFRAMEWORK}"
-_ACEOF
+printf "%s\n" "#define _PYTHONFRAMEWORK \"${PYTHONFRAMEWORK}\"" >>confdefs.h
 
 
 # Set name for machine-dependent library files
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking MACHDEP" >&5
-$as_echo_n "checking MACHDEP... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking MACHDEP" >&5
+printf %s "checking MACHDEP... " >&6; }
 if test -z "$MACHDEP"
 then
     # avoid using uname for cross builds
@@ -3909,9 +4289,18 @@ then
 	darwin*) MACHDEP="darwin";;
 	'')	MACHDEP="unknown";;
     esac
+
+    if test "$ac_sys_system" = "SunOS"; then
+	# For Solaris, there isn't an OS version specific macro defined
+	# in most compilers, so we define one here.
+	SUNOS_VERSION=`echo $ac_sys_release | sed -e 's!\.\(0-9\)$!.0\1!g' | tr -d '.'`
+
+printf "%s\n" "#define Py_SUNOS_VERSION $SUNOS_VERSION" >>confdefs.h
+
+    fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: \"$MACHDEP\"" >&5
-$as_echo "\"$MACHDEP\"" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: \"$MACHDEP\"" >&5
+printf "%s\n" "\"$MACHDEP\"" >&6; }
 
 
 if test "$cross_compiling" = yes; then
@@ -3963,7 +4352,7 @@ case $ac_sys_system/$ac_sys_release in
     # also defined. This can be overridden by defining _BSD_SOURCE
     # As this has a different meaning on Linux, only define it on OpenBSD
 
-$as_echo "#define _BSD_SOURCE 1" >>confdefs.h
+printf "%s\n" "#define _BSD_SOURCE 1" >>confdefs.h
 
     ;;
   OpenBSD/*)
@@ -3971,7 +4360,7 @@ $as_echo "#define _BSD_SOURCE 1" >>confdefs.h
     # also defined. This can be overridden by defining _BSD_SOURCE
     # As this has a different meaning on Linux, only define it on OpenBSD
 
-$as_echo "#define _BSD_SOURCE 1" >>confdefs.h
+printf "%s\n" "#define _BSD_SOURCE 1" >>confdefs.h
 
     ;;
   # Defining _XOPEN_SOURCE on NetBSD version prior to the introduction of
@@ -4029,7 +4418,7 @@ if test $define_xopen_source = yes
 then
   # X/Open 7, incorporating POSIX.1-2008
 
-$as_echo "#define _XOPEN_SOURCE 700" >>confdefs.h
+printf "%s\n" "#define _XOPEN_SOURCE 700" >>confdefs.h
 
 
   # On Tru64 Unix 4.0F, defining _XOPEN_SOURCE also requires
@@ -4037,11 +4426,11 @@ $as_echo "#define _XOPEN_SOURCE 700" >>confdefs.h
   # several APIs are not declared. Since this is also needed in some
   # cases for HP-UX, we define it globally.
 
-$as_echo "#define _XOPEN_SOURCE_EXTENDED 1" >>confdefs.h
+printf "%s\n" "#define _XOPEN_SOURCE_EXTENDED 1" >>confdefs.h
 
 
 
-$as_echo "#define _POSIX_C_SOURCE 200809L" >>confdefs.h
+printf "%s\n" "#define _POSIX_C_SOURCE 200809L" >>confdefs.h
 
 fi
 
@@ -4056,7 +4445,7 @@ esac
 if test $define_stdc_a1 = yes
 then
 
-$as_echo "#define _INCLUDE__STDC_A1_SOURCE 1" >>confdefs.h
+printf "%s\n" "#define _INCLUDE__STDC_A1_SOURCE 1" >>confdefs.h
 
 fi
 
@@ -4104,11 +4493,12 @@ if test "$ac_sys_system" = "Darwin"
 then
     # Extract the first word of "xcrun", so it can be a program name with args.
 set dummy xcrun; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_HAS_XCRUN+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_HAS_XCRUN+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$HAS_XCRUN"; then
   ac_cv_prog_HAS_XCRUN="$HAS_XCRUN" # Let the user override the test.
 else
@@ -4116,11 +4506,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_HAS_XCRUN="yes"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4132,16 +4526,16 @@ fi
 fi
 HAS_XCRUN=$ac_cv_prog_HAS_XCRUN
 if test -n "$HAS_XCRUN"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $HAS_XCRUN" >&5
-$as_echo "$HAS_XCRUN" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $HAS_XCRUN" >&5
+printf "%s\n" "$HAS_XCRUN" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking macOS SDKROOT" >&5
-$as_echo_n "checking macOS SDKROOT... " >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking macOS SDKROOT" >&5
+printf %s "checking macOS SDKROOT... " >&6; }
   if test -z "$SDKROOT"; then
         if test "$HAS_XCRUN" = "yes"; then
             SDKROOT=$(xcrun --show-sdk-path)
@@ -4149,8 +4543,8 @@ $as_echo_n "checking macOS SDKROOT... " >&6; }
             SDKROOT="/"
     fi
   fi
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $SDKROOT" >&5
-$as_echo "$SDKROOT" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $SDKROOT" >&5
+printf "%s\n" "$SDKROOT" >&6; }
 
 	# Compiler selection on MacOSX is more complicated than
 	# AC_PROG_CC can handle, see Mac/README for more
@@ -4180,8 +4574,8 @@ $as_echo "$SDKROOT" >&6; }
 		then
 			if test -n "`"$found_gcc" --version | grep llvm-gcc`"
 			then
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: Detected llvm-gcc, falling back to clang" >&5
-$as_echo "$as_me: Detected llvm-gcc, falling back to clang" >&6;}
+				{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Detected llvm-gcc, falling back to clang" >&5
+printf "%s\n" "$as_me: Detected llvm-gcc, falling back to clang" >&6;}
 				CC="$found_clang"
 				CXX="$found_clang++"
 			fi
@@ -4189,8 +4583,8 @@ $as_echo "$as_me: Detected llvm-gcc, falling back to clang" >&6;}
 
 		elif test -z "$found_gcc" -a -n "$found_clang"
 		then
-			{ $as_echo "$as_me:${as_lineno-$LINENO}: No GCC found, use CLANG" >&5
-$as_echo "$as_me: No GCC found, use CLANG" >&6;}
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: No GCC found, use CLANG" >&5
+printf "%s\n" "$as_me: No GCC found, use CLANG" >&6;}
 			CC="$found_clang"
 			CXX="$found_clang++"
 
@@ -4199,8 +4593,8 @@ $as_echo "$as_me: No GCC found, use CLANG" >&6;}
 			found_clang=`/usr/bin/xcrun -find clang 2>/dev/null`
 			if test -n "${found_clang}"
 			then
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: Using clang from Xcode.app" >&5
-$as_echo "$as_me: Using clang from Xcode.app" >&6;}
+				{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Using clang from Xcode.app" >&5
+printf "%s\n" "$as_me: Using clang from Xcode.app" >&6;}
 				CC="${found_clang}"
 				CXX="`/usr/bin/xcrun -find clang++`"
 
@@ -4209,6 +4603,15 @@ $as_echo "$as_me: Using clang from Xcode.app" >&6;}
 		fi
 	fi
 fi
+
+
+
+
+
+
+
+
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -4217,11 +4620,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
@@ -4229,11 +4633,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}gcc"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4244,11 +4652,11 @@ fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -4257,11 +4665,12 @@ if test -z "$ac_cv_prog_CC"; then
   ac_ct_CC=$CC
   # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$ac_ct_CC"; then
   ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
 else
@@ -4269,11 +4678,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="gcc"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4284,11 +4697,11 @@ fi
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
-$as_echo "$ac_ct_CC" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_ct_CC" = x; then
@@ -4296,8 +4709,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CC=$ac_ct_CC
@@ -4310,11 +4723,12 @@ if test -z "$CC"; then
           if test -n "$ac_tool_prefix"; then
     # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
 set dummy ${ac_tool_prefix}cc; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
@@ -4322,11 +4736,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}cc"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4337,11 +4755,11 @@ fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -4350,11 +4768,12 @@ fi
 if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
@@ -4363,15 +4782,19 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
        continue
      fi
     ac_cv_prog_CC="cc"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4387,18 +4810,18 @@ if test $ac_prog_rejected = yes; then
     # However, it has the same basename, so the bogon will be chosen
     # first if we set CC to just the basename; use the full file name.
     shift
-    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+    ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"
   fi
 fi
 fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -4409,11 +4832,12 @@ if test -z "$CC"; then
   do
     # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$CC"; then
   ac_cv_prog_CC="$CC" # Let the user override the test.
 else
@@ -4421,11 +4845,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4436,11 +4864,11 @@ fi
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -4453,11 +4881,12 @@ if test -z "$CC"; then
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$ac_ct_CC"; then
   ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
 else
@@ -4465,11 +4894,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -4480,11 +4913,11 @@ fi
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
-$as_echo "$ac_ct_CC" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -4496,8 +4929,8 @@ done
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CC=$ac_ct_CC
@@ -4505,45 +4938,149 @@ esac
 fi
 
 fi
-
-
-test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "no acceptable C compiler found in \$PATH
-See \`config.log' for more details" "$LINENO" 5; }
-
-# Provide some information about the compiler.
-$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
-set X $ac_compile
-ac_compiler=$2
-for ac_option in --version -v -V -qversion; do
-  { { ac_try="$ac_compiler $ac_option >&5"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
-  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
-  ac_status=$?
-  if test -s conftest.err; then
-    sed '10a\
-... rest of stderr output deleted ...
-         10q' conftest.err >conftest.er1
-    cat conftest.er1 >&5
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.
+set dummy ${ac_tool_prefix}clang; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}clang"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
   fi
-  rm -f conftest.er1 conftest.err
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }
 done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "clang", so it can be a program name with args.
+set dummy clang; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="clang"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+
+
+test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion -version; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
 
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
   ;
   return 0;
 }
@@ -4553,9 +5090,9 @@ ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
 # Try to create an executable without -o first, disregard a.out.
 # It will help us diagnose broken compilers, and finding out an intuition
 # of exeext.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
-$as_echo_n "checking whether the C compiler works... " >&6; }
-ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+printf %s "checking whether the C compiler works... " >&6; }
+ac_link_default=`printf "%s\n" "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
 
 # The possible output files:
 ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
@@ -4576,11 +5113,12 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_link_default") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then :
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
   # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
 # So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
 # in a Makefile.  We should not override ac_cv_exeext if it was cached,
@@ -4597,7 +5135,7 @@ do
 	# certainly right.
 	break;;
     *.* )
-	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	if test ${ac_cv_exeext+y} && test "$ac_cv_exeext" != no;
 	then :; else
 	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
 	fi
@@ -4613,44 +5151,46 @@ do
 done
 test "$ac_cv_exeext" = no && ac_cv_exeext=
 
-else
+else $as_nop
   ac_file=''
 fi
-if test -z "$ac_file"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-$as_echo "$as_me: failed program was:" >&5
+if test -z "$ac_file"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "C compiler cannot create executables
 See \`config.log' for more details" "$LINENO" 5; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
-$as_echo_n "checking for C compiler default output file name... " >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
-$as_echo "$ac_file" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+printf %s "checking for C compiler default output file name... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+printf "%s\n" "$ac_file" >&6; }
 ac_exeext=$ac_cv_exeext
 
 rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
 ac_clean_files=$ac_clean_files_save
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
-$as_echo_n "checking for suffix of executables... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+printf %s "checking for suffix of executables... " >&6; }
 if { { ac_try="$ac_link"
 case "(($ac_try" in
   *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then :
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
   # If both `conftest.exe' and `conftest' are `present' (well, observable)
 # catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
 # work properly (i.e., refer to `conftest.exe'), while it won't with
@@ -4664,15 +5204,15 @@ for ac_file in conftest.exe conftest conftest.*; do
     * ) break;;
   esac
 done
-else
-  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of executables: cannot compile and link
 See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest conftest$ac_cv_exeext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
-$as_echo "$ac_cv_exeext" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+printf "%s\n" "$ac_cv_exeext" >&6; }
 
 rm -f conftest.$ac_ext
 EXEEXT=$ac_cv_exeext
@@ -4681,7 +5221,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdio.h>
 int
-main ()
+main (void)
 {
 FILE *f = fopen ("conftest.out", "w");
  return ferror (f) || fclose (f) != 0;
@@ -4693,8 +5233,8 @@ _ACEOF
 ac_clean_files="$ac_clean_files conftest.out"
 # Check that the compiler produces executables we can run.  If not, either
 # the compiler is broken, or we cross compile.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
-$as_echo_n "checking whether we are cross compiling... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+printf %s "checking whether we are cross compiling... " >&6; }
 if test "$cross_compiling" != yes; then
   { { ac_try="$ac_link"
 case "(($ac_try" in
@@ -4702,10 +5242,10 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
   if { ac_try='./conftest$ac_cv_exeext'
   { { case "(($ac_try" in
@@ -4713,39 +5253,40 @@ $as_echo "$ac_try_echo"; } >&5
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_try") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; }; then
     cross_compiling=no
   else
     if test "$cross_compiling" = maybe; then
 	cross_compiling=yes
     else
-	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run C compiled programs.
+	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot run C compiled programs.
 If you meant to cross compile, use \`--host'.
 See \`config.log' for more details" "$LINENO" 5; }
     fi
   fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
-$as_echo "$cross_compiling" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+printf "%s\n" "$cross_compiling" >&6; }
 
 rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
 ac_clean_files=$ac_clean_files_save
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
-$as_echo_n "checking for suffix of object files... " >&6; }
-if ${ac_cv_objext+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+printf %s "checking for suffix of object files... " >&6; }
+if test ${ac_cv_objext+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
@@ -4759,11 +5300,12 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
+printf "%s\n" "$ac_try_echo"; } >&5
   (eval "$ac_compile") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then :
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
   for ac_file in conftest.o conftest.obj conftest.*; do
   test -f "$ac_file" || continue;
   case $ac_file in
@@ -4772,31 +5314,32 @@ $as_echo "$ac_try_echo"; } >&5
        break;;
   esac
 done
-else
-  $as_echo "$as_me: failed program was:" >&5
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of object files: cannot compile
 See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest.$ac_cv_objext conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
-$as_echo "$ac_cv_objext" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+printf "%s\n" "$ac_cv_objext" >&6; }
 OBJEXT=$ac_cv_objext
 ac_objext=$OBJEXT
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
-$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
-if ${ac_cv_c_compiler_gnu+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5
+printf %s "checking whether the compiler supports GNU C... " >&6; }
+if test ${ac_cv_c_compiler_gnu+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 #ifndef __GNUC__
        choke me
@@ -4806,29 +5349,33 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_compiler_gnu=yes
-else
+else $as_nop
   ac_compiler_gnu=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 ac_cv_c_compiler_gnu=$ac_compiler_gnu
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
-$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; }
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 if test $ac_compiler_gnu = yes; then
   GCC=yes
 else
   GCC=
 fi
-ac_test_CFLAGS=${CFLAGS+set}
+ac_test_CFLAGS=${CFLAGS+y}
 ac_save_CFLAGS=$CFLAGS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
-$as_echo_n "checking whether $CC accepts -g... " >&6; }
-if ${ac_cv_prog_cc_g+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+printf %s "checking whether $CC accepts -g... " >&6; }
+if test ${ac_cv_prog_cc_g+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_save_c_werror_flag=$ac_c_werror_flag
    ac_c_werror_flag=yes
    ac_cv_prog_cc_g=no
@@ -4837,57 +5384,60 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_prog_cc_g=yes
-else
+else $as_nop
   CFLAGS=""
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-else
+else $as_nop
   ac_c_werror_flag=$ac_save_c_werror_flag
 	 CFLAGS="-g"
 	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_prog_cc_g=yes
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
    ac_c_werror_flag=$ac_save_c_werror_flag
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
-$as_echo "$ac_cv_prog_cc_g" >&6; }
-if test "$ac_test_CFLAGS" = set; then
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+printf "%s\n" "$ac_cv_prog_cc_g" >&6; }
+if test $ac_test_CFLAGS; then
   CFLAGS=$ac_save_CFLAGS
 elif test $ac_cv_prog_cc_g = yes; then
   if test "$GCC" = yes; then
@@ -4902,94 +5452,144 @@ else
     CFLAGS=
   fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
-$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
-if ${ac_cv_prog_cc_c89+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_cv_prog_cc_c89=no
+ac_prog_cc_stdc=no
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5
+printf %s "checking for $CC option to enable C11 features... " >&6; }
+if test ${ac_cv_prog_cc_c11+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c11=no
 ac_save_CC=$CC
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <stdarg.h>
-#include <stdio.h>
-struct stat;
-/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
-struct buf { int x; };
-FILE * (*rcsopen) (struct buf *, struct stat *, int);
-static char *e (p, i)
-     char **p;
-     int i;
-{
-  return p[i];
-}
-static char *f (char * (*g) (char **, int), char **p, ...)
-{
-  char *s;
-  va_list v;
-  va_start (v,p);
-  s = g (p, va_arg (v,int));
-  va_end (v);
-  return s;
-}
-
-/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
-   function prototypes and stuff, but not '\xHH' hex character constants.
-   These don't provoke an error unfortunately, instead are silently treated
-   as 'x'.  The following induces an error, until -std is added to get
-   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
-   array size at least.  It's necessary to write '\x00'==0 to get something
-   that's true only with -std.  */
-int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+$ac_c_conftest_c11_program
+_ACEOF
+for ac_arg in '' -std=gnu11
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c11=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c11" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
 
-/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
-   inside strings and character constants.  */
-#define FOO(x) 'x'
-int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+if test "x$ac_cv_prog_cc_c11" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c11" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
+printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }
+     CC="$CC $ac_cv_prog_cc_c11"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11
+  ac_prog_cc_stdc=c11
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5
+printf %s "checking for $CC option to enable C99 features... " >&6; }
+if test ${ac_cv_prog_cc_c99+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c99=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c99_program
+_ACEOF
+for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99=
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c99=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c99" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
 
-int test (int i, double x);
-struct s1 {int (*f) (int a);};
-struct s2 {int (*f) (double a);};
-int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
-int argc;
-char **argv;
-int
-main ()
-{
-return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
-  ;
-  return 0;
-}
+if test "x$ac_cv_prog_cc_c99" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c99" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
+printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }
+     CC="$CC $ac_cv_prog_cc_c99"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99
+  ac_prog_cc_stdc=c99
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5
+printf %s "checking for $CC option to enable C89 features... " >&6; }
+if test ${ac_cv_prog_cc_c89+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c89_program
 _ACEOF
-for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
-	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
 do
   CC="$ac_save_CC $ac_arg"
-  if ac_fn_c_try_compile "$LINENO"; then :
+  if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_prog_cc_c89=$ac_arg
 fi
-rm -f core conftest.err conftest.$ac_objext
+rm -f core conftest.err conftest.$ac_objext conftest.beam
   test "x$ac_cv_prog_cc_c89" != "xno" && break
 done
 rm -f conftest.$ac_ext
 CC=$ac_save_CC
-
 fi
-# AC_CACHE_VAL
-case "x$ac_cv_prog_cc_c89" in
-  x)
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
-$as_echo "none needed" >&6; } ;;
-  xno)
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
-$as_echo "unsupported" >&6; } ;;
-  *)
-    CC="$CC $ac_cv_prog_cc_c89"
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
-$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
-esac
-if test "x$ac_cv_prog_cc_c89" != xno; then :
 
+if test "x$ac_cv_prog_cc_c89" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c89" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }
+     CC="$CC $ac_cv_prog_cc_c89"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89
+  ac_prog_cc_stdc=c89
+fi
 fi
 
 ac_ext=c
@@ -5003,40 +5603,36 @@ ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
-$as_echo_n "checking how to run the C preprocessor... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+printf %s "checking how to run the C preprocessor... " >&6; }
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
 fi
 if test -z "$CPP"; then
-  if ${ac_cv_prog_CPP+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-      # Double quotes because CPP needs to be expanded
-    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+  if test ${ac_cv_prog_CPP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+      # Double quotes because $CC needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" cpp /lib/cpp
     do
       ac_preproc_ok=false
 for ac_c_preproc_warn_flag in '' yes
 do
   # Use a header file that comes with gcc, so configuring glibc
   # with a fresh cross-compiler works.
-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-  # <limits.h> exists even on freestanding compilers.
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp. "Syntax error" is here to catch this case.
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+#include <limits.h>
 		     Syntax error
 _ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
+if ac_fn_c_try_cpp "$LINENO"
+then :
 
-else
+else $as_nop
   # Broken: fails on valid input.
 continue
 fi
@@ -5048,10 +5644,11 @@ rm -f conftest.err conftest.i conftest.$ac_ext
 /* end confdefs.h.  */
 #include <ac_nonexistent.h>
 _ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
+if ac_fn_c_try_cpp "$LINENO"
+then :
   # Broken: success on invalid input.
 continue
-else
+else $as_nop
   # Passes both tests.
 ac_preproc_ok=:
 break
@@ -5061,7 +5658,8 @@ rm -f conftest.err conftest.i conftest.$ac_ext
 done
 # Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
 rm -f conftest.i conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then :
+if $ac_preproc_ok
+then :
   break
 fi
 
@@ -5073,29 +5671,24 @@ fi
 else
   ac_cv_prog_CPP=$CPP
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
-$as_echo "$CPP" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+printf "%s\n" "$CPP" >&6; }
 ac_preproc_ok=false
 for ac_c_preproc_warn_flag in '' yes
 do
   # Use a header file that comes with gcc, so configuring glibc
   # with a fresh cross-compiler works.
-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-  # <limits.h> exists even on freestanding compilers.
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp. "Syntax error" is here to catch this case.
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+#include <limits.h>
 		     Syntax error
 _ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
+if ac_fn_c_try_cpp "$LINENO"
+then :
 
-else
+else $as_nop
   # Broken: fails on valid input.
 continue
 fi
@@ -5107,10 +5700,11 @@ rm -f conftest.err conftest.i conftest.$ac_ext
 /* end confdefs.h.  */
 #include <ac_nonexistent.h>
 _ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
+if ac_fn_c_try_cpp "$LINENO"
+then :
   # Broken: success on invalid input.
 continue
-else
+else $as_nop
   # Passes both tests.
 ac_preproc_ok=:
 break
@@ -5120,11 +5714,12 @@ rm -f conftest.err conftest.i conftest.$ac_ext
 done
 # Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
 rm -f conftest.i conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then :
+if $ac_preproc_ok
+then :
 
-else
-  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
 See \`config.log' for more details" "$LINENO" 5; }
 fi
@@ -5135,11 +5730,12 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
-$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
-if ${ac_cv_path_GREP+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+printf %s "checking for grep that handles long lines and -e... " >&6; }
+if test ${ac_cv_path_GREP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -z "$GREP"; then
   ac_path_GREP_found=false
   # Loop through the user's path and test for each of PROGNAME-LIST
@@ -5147,10 +5743,15 @@ else
 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_prog in grep ggrep; do
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in grep ggrep
+   do
     for ac_exec_ext in '' $ac_executable_extensions; do
-      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      ac_path_GREP="$as_dir$ac_prog$ac_exec_ext"
       as_fn_executable_p "$ac_path_GREP" || continue
 # Check for GNU ac_path_GREP and select it if it is found.
   # Check for GNU $ac_path_GREP
@@ -5159,13 +5760,13 @@ case `"$ac_path_GREP" --version 2>&1` in
   ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
 *)
   ac_count=0
-  $as_echo_n 0123456789 >"conftest.in"
+  printf %s 0123456789 >"conftest.in"
   while :
   do
     cat "conftest.in" "conftest.in" >"conftest.tmp"
     mv "conftest.tmp" "conftest.in"
     cp "conftest.in" "conftest.nl"
-    $as_echo 'GREP' >> "conftest.nl"
+    printf "%s\n" 'GREP' >> "conftest.nl"
     "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
     as_fn_arith $ac_count + 1 && ac_count=$as_val
@@ -5193,16 +5794,17 @@ else
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
-$as_echo "$ac_cv_path_GREP" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+printf "%s\n" "$ac_cv_path_GREP" >&6; }
  GREP="$ac_cv_path_GREP"
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
-$as_echo_n "checking for a sed that does not truncate output... " >&6; }
-if ${ac_cv_path_SED+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+printf %s "checking for a sed that does not truncate output... " >&6; }
+if test ${ac_cv_path_SED+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
             ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
      for ac_i in 1 2 3 4 5 6 7; do
        ac_script="$ac_script$as_nl$ac_script"
@@ -5216,10 +5818,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_prog in sed gsed; do
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in sed gsed
+   do
     for ac_exec_ext in '' $ac_executable_extensions; do
-      ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
+      ac_path_SED="$as_dir$ac_prog$ac_exec_ext"
       as_fn_executable_p "$ac_path_SED" || continue
 # Check for GNU ac_path_SED and select it if it is found.
   # Check for GNU $ac_path_SED
@@ -5228,13 +5835,13 @@ case `"$ac_path_SED" --version 2>&1` in
   ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
 *)
   ac_count=0
-  $as_echo_n 0123456789 >"conftest.in"
+  printf %s 0123456789 >"conftest.in"
   while :
   do
     cat "conftest.in" "conftest.in" >"conftest.tmp"
     mv "conftest.tmp" "conftest.in"
     cp "conftest.in" "conftest.nl"
-    $as_echo '' >> "conftest.nl"
+    printf "%s\n" '' >> "conftest.nl"
     "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
     as_fn_arith $ac_count + 1 && ac_count=$as_val
@@ -5262,16 +5869,17 @@ else
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
-$as_echo "$ac_cv_path_SED" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+printf "%s\n" "$ac_cv_path_SED" >&6; }
  SED="$ac_cv_path_SED"
   rm -f conftest.sed
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
-$as_echo_n "checking for egrep... " >&6; }
-if ${ac_cv_path_EGREP+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+printf %s "checking for egrep... " >&6; }
+if test ${ac_cv_path_EGREP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
    then ac_cv_path_EGREP="$GREP -E"
    else
@@ -5282,10 +5890,15 @@ else
 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_prog in egrep; do
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_prog in egrep
+   do
     for ac_exec_ext in '' $ac_executable_extensions; do
-      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      ac_path_EGREP="$as_dir$ac_prog$ac_exec_ext"
       as_fn_executable_p "$ac_path_EGREP" || continue
 # Check for GNU ac_path_EGREP and select it if it is found.
   # Check for GNU $ac_path_EGREP
@@ -5294,13 +5907,13 @@ case `"$ac_path_EGREP" --version 2>&1` in
   ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
 *)
   ac_count=0
-  $as_echo_n 0123456789 >"conftest.in"
+  printf %s 0123456789 >"conftest.in"
   while :
   do
     cat "conftest.in" "conftest.in" >"conftest.tmp"
     mv "conftest.tmp" "conftest.in"
     cp "conftest.in" "conftest.nl"
-    $as_echo 'EGREP' >> "conftest.nl"
+    printf "%s\n" 'EGREP' >> "conftest.nl"
     "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
     as_fn_arith $ac_count + 1 && ac_count=$as_val
@@ -5329,17 +5942,18 @@ fi
 
    fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
-$as_echo "$ac_cv_path_EGREP" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+printf "%s\n" "$ac_cv_path_EGREP" >&6; }
  EGREP="$ac_cv_path_EGREP"
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CC compiler name" >&5
-$as_echo_n "checking for CC compiler name... " >&6; }
-if ${ac_cv_cc_name+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for CC compiler name" >&5
+printf %s "checking for CC compiler name... " >&6; }
+if test ${ac_cv_cc_name+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat > conftest.c <<EOF
 #if defined(__INTEL_COMPILER) || defined(__ICC)
@@ -5365,203 +5979,182 @@ fi
 rm -f conftest.c conftest.out
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_name" >&5
-$as_echo "$ac_cv_cc_name" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_name" >&5
+printf "%s\n" "$ac_cv_cc_name" >&6; }
 
 # checks for UNIX variants that set C preprocessor variables
 # may set _GNU_SOURCE, __EXTENSIONS__, _POSIX_PTHREAD_SEMANTICS,
 # _POSIX_SOURCE, _POSIX_1_SOURCE, and more
 
+ac_header= ac_cache=
+for ac_item in $ac_header_c_list
+do
+  if test $ac_cache; then
+    ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"
+    if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then
+      printf "%s\n" "#define $ac_item 1" >> confdefs.h
+    fi
+    ac_header= ac_cache=
+  elif test $ac_header; then
+    ac_cache=$ac_item
+  else
+    ac_header=$ac_item
+  fi
+done
+
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
-$as_echo_n "checking for ANSI C header files... " >&6; }
-if ${ac_cv_header_stdc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+
+
+
+
+
+
+if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes
+then :
+
+printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
+printf %s "checking whether it is safe to define __EXTENSIONS__... " >&6; }
+if test ${ac_cv_safe_to_define___extensions__+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
 
+#         define __EXTENSIONS__ 1
+          $ac_includes_default
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_header_stdc=yes
-else
-  ac_cv_header_stdc=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-if test $ac_cv_header_stdc = yes; then
-  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <string.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "memchr" >/dev/null 2>&1; then :
-
-else
-  ac_cv_header_stdc=no
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_safe_to_define___extensions__=yes
+else $as_nop
+  ac_cv_safe_to_define___extensions__=no
 fi
-rm -f conftest*
-
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5
+printf "%s\n" "$ac_cv_safe_to_define___extensions__" >&6; }
 
-if test $ac_cv_header_stdc = yes; then
-  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether _XOPEN_SOURCE should be defined" >&5
+printf %s "checking whether _XOPEN_SOURCE should be defined... " >&6; }
+if test ${ac_cv_should_define__xopen_source+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_should_define__xopen_source=no
+    if test $ac_cv_header_wchar_h = yes
+then :
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <stdlib.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "free" >/dev/null 2>&1; then :
 
-else
-  ac_cv_header_stdc=no
-fi
-rm -f conftest*
+          #include <wchar.h>
+          mbstate_t x;
+int
+main (void)
+{
 
-fi
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-if test $ac_cv_header_stdc = yes; then
-  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-  if test "$cross_compiling" = yes; then :
-  :
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <ctype.h>
-#include <stdlib.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) \
-		   (('a' <= (c) && (c) <= 'i') \
-		     || ('j' <= (c) && (c) <= 'r') \
-		     || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
-#endif
 
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+            #define _XOPEN_SOURCE 500
+            #include <wchar.h>
+            mbstate_t x;
 int
-main ()
+main (void)
 {
-  int i;
-  for (i = 0; i < 256; i++)
-    if (XOR (islower (i), ISLOWER (i))
-	|| toupper (i) != TOUPPER (i))
-      return 2;
+
+  ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-
-else
-  ac_cv_header_stdc=no
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_should_define__xopen_source=yes
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
-$as_echo "$ac_cv_header_stdc" >&6; }
-if test $ac_cv_header_stdc = yes; then
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_should_define__xopen_source" >&5
+printf "%s\n" "$ac_cv_should_define__xopen_source" >&6; }
 
-$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+  printf "%s\n" "#define _ALL_SOURCE 1" >>confdefs.h
 
-fi
+  printf "%s\n" "#define _DARWIN_C_SOURCE 1" >>confdefs.h
 
-# On IRIX 5.3, sys/types and inttypes.h are conflicting.
-for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
-		  inttypes.h stdint.h unistd.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
-"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
+  printf "%s\n" "#define _GNU_SOURCE 1" >>confdefs.h
 
-fi
+  printf "%s\n" "#define _HPUX_ALT_XOPEN_SOCKET_API 1" >>confdefs.h
 
-done
+  printf "%s\n" "#define _NETBSD_SOURCE 1" >>confdefs.h
 
+  printf "%s\n" "#define _OPENBSD_SOURCE 1" >>confdefs.h
 
+  printf "%s\n" "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h
 
-  ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default"
-if test "x$ac_cv_header_minix_config_h" = xyes; then :
-  MINIX=yes
-else
-  MINIX=
-fi
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_ATTRIBS_EXT__ 1" >>confdefs.h
 
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_BFP_EXT__ 1" >>confdefs.h
 
-  if test "$MINIX" = yes; then
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_DFP_EXT__ 1" >>confdefs.h
 
-$as_echo "#define _POSIX_SOURCE 1" >>confdefs.h
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_FUNCS_EXT__ 1" >>confdefs.h
 
+  printf "%s\n" "#define __STDC_WANT_IEC_60559_TYPES_EXT__ 1" >>confdefs.h
 
-$as_echo "#define _POSIX_1_SOURCE 2" >>confdefs.h
+  printf "%s\n" "#define __STDC_WANT_LIB_EXT2__ 1" >>confdefs.h
 
+  printf "%s\n" "#define __STDC_WANT_MATH_SPEC_FUNCS__ 1" >>confdefs.h
 
-$as_echo "#define _MINIX 1" >>confdefs.h
+  printf "%s\n" "#define _TANDEM_SOURCE 1" >>confdefs.h
 
-  fi
+  if test $ac_cv_header_minix_config_h = yes
+then :
+  MINIX=yes
+    printf "%s\n" "#define _MINIX 1" >>confdefs.h
 
+    printf "%s\n" "#define _POSIX_SOURCE 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
-$as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; }
-if ${ac_cv_safe_to_define___extensions__+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#         define __EXTENSIONS__ 1
-          $ac_includes_default
-int
-main ()
-{
+    printf "%s\n" "#define _POSIX_1_SOURCE 2" >>confdefs.h
 
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_safe_to_define___extensions__=yes
-else
-  ac_cv_safe_to_define___extensions__=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else $as_nop
+  MINIX=
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5
-$as_echo "$ac_cv_safe_to_define___extensions__" >&6; }
-  test $ac_cv_safe_to_define___extensions__ = yes &&
-    $as_echo "#define __EXTENSIONS__ 1" >>confdefs.h
+  if test $ac_cv_safe_to_define___extensions__ = yes
+then :
+  printf "%s\n" "#define __EXTENSIONS__ 1" >>confdefs.h
 
-  $as_echo "#define _ALL_SOURCE 1" >>confdefs.h
-
-  $as_echo "#define _GNU_SOURCE 1" >>confdefs.h
-
-  $as_echo "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h
-
-  $as_echo "#define _TANDEM_SOURCE 1" >>confdefs.h
+fi
+  if test $ac_cv_should_define__xopen_source = yes
+then :
+  printf "%s\n" "#define _XOPEN_SOURCE 500" >>confdefs.h
 
+fi
 
 
 
@@ -5573,11 +6166,12 @@ then
         gcc)    if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}g++", so it can be a program name with args.
 set dummy ${ac_tool_prefix}g++; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_CXX="$CXX" # Let the user override the test with a path.
@@ -5587,11 +6181,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5603,11 +6201,11 @@ esac
 fi
 CXX=$ac_cv_path_CXX
 if test -n "$CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
-$as_echo "$CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+printf "%s\n" "$CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -5616,11 +6214,12 @@ if test -z "$ac_cv_path_CXX"; then
   ac_pt_CXX=$CXX
   # Extract the first word of "g++", so it can be a program name with args.
 set dummy g++; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_CXX="$ac_pt_CXX" # Let the user override the test with a path.
@@ -5630,11 +6229,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5646,11 +6249,11 @@ esac
 fi
 ac_pt_CXX=$ac_cv_path_ac_pt_CXX
 if test -n "$ac_pt_CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
-$as_echo "$ac_pt_CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
+printf "%s\n" "$ac_pt_CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_CXX" = x; then
@@ -5658,8 +6261,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CXX=$ac_pt_CXX
@@ -5671,11 +6274,12 @@ fi
         cc)     if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}c++", so it can be a program name with args.
 set dummy ${ac_tool_prefix}c++; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_CXX="$CXX" # Let the user override the test with a path.
@@ -5685,11 +6289,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5701,11 +6309,11 @@ esac
 fi
 CXX=$ac_cv_path_CXX
 if test -n "$CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
-$as_echo "$CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+printf "%s\n" "$CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -5714,11 +6322,12 @@ if test -z "$ac_cv_path_CXX"; then
   ac_pt_CXX=$CXX
   # Extract the first word of "c++", so it can be a program name with args.
 set dummy c++; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_CXX="$ac_pt_CXX" # Let the user override the test with a path.
@@ -5728,11 +6337,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5744,11 +6357,11 @@ esac
 fi
 ac_pt_CXX=$ac_cv_path_ac_pt_CXX
 if test -n "$ac_pt_CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
-$as_echo "$ac_pt_CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
+printf "%s\n" "$ac_pt_CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_CXX" = x; then
@@ -5756,8 +6369,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CXX=$ac_pt_CXX
@@ -5769,11 +6382,12 @@ fi
         clang|*/clang)     if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}clang++", so it can be a program name with args.
 set dummy ${ac_tool_prefix}clang++; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_CXX="$CXX" # Let the user override the test with a path.
@@ -5783,11 +6397,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5799,11 +6417,11 @@ esac
 fi
 CXX=$ac_cv_path_CXX
 if test -n "$CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
-$as_echo "$CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+printf "%s\n" "$CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -5812,11 +6430,12 @@ if test -z "$ac_cv_path_CXX"; then
   ac_pt_CXX=$CXX
   # Extract the first word of "clang++", so it can be a program name with args.
 set dummy clang++; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_CXX="$ac_pt_CXX" # Let the user override the test with a path.
@@ -5826,11 +6445,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5842,11 +6465,11 @@ esac
 fi
 ac_pt_CXX=$ac_cv_path_ac_pt_CXX
 if test -n "$ac_pt_CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
-$as_echo "$ac_pt_CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
+printf "%s\n" "$ac_pt_CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_CXX" = x; then
@@ -5854,8 +6477,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CXX=$ac_pt_CXX
@@ -5867,11 +6490,12 @@ fi
         icc|*/icc)         if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}icpc", so it can be a program name with args.
 set dummy ${ac_tool_prefix}icpc; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_CXX="$CXX" # Let the user override the test with a path.
@@ -5881,11 +6505,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5897,11 +6525,11 @@ esac
 fi
 CXX=$ac_cv_path_CXX
 if test -n "$CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
-$as_echo "$CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+printf "%s\n" "$CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -5910,11 +6538,12 @@ if test -z "$ac_cv_path_CXX"; then
   ac_pt_CXX=$CXX
   # Extract the first word of "icpc", so it can be a program name with args.
 set dummy icpc; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_CXX in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_CXX="$ac_pt_CXX" # Let the user override the test with a path.
@@ -5924,11 +6553,15 @@ else
 for as_dir in notfound
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_CXX="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_CXX="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -5940,11 +6573,11 @@ esac
 fi
 ac_pt_CXX=$ac_cv_path_ac_pt_CXX
 if test -n "$ac_pt_CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
-$as_echo "$ac_pt_CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_CXX" >&5
+printf "%s\n" "$ac_pt_CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_CXX" = x; then
@@ -5952,8 +6585,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CXX=$ac_pt_CXX
@@ -5975,11 +6608,12 @@ then
   do
     # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$CXX"; then
   ac_cv_prog_CXX="$CXX" # Let the user override the test.
 else
@@ -5987,11 +6621,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CXX="$ac_tool_prefix$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -6002,11 +6640,11 @@ fi
 fi
 CXX=$ac_cv_prog_CXX
 if test -n "$CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
-$as_echo "$CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+printf "%s\n" "$CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -6019,11 +6657,12 @@ if test -z "$CXX"; then
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_CXX+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$ac_ct_CXX"; then
   ac_cv_prog_ac_ct_CXX="$ac_ct_CXX" # Let the user override the test.
 else
@@ -6031,11 +6670,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CXX="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -6046,11 +6689,11 @@ fi
 fi
 ac_ct_CXX=$ac_cv_prog_ac_ct_CXX
 if test -n "$ac_ct_CXX"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CXX" >&5
-$as_echo "$ac_ct_CXX" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CXX" >&5
+printf "%s\n" "$ac_ct_CXX" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -6062,8 +6705,8 @@ done
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CXX=$ac_ct_CXX
@@ -6077,12 +6720,12 @@ fi
 fi
 if test "$preset_cxx" != "$CXX"
 then
-        { $as_echo "$as_me:${as_lineno-$LINENO}:
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}:
 
   By default, distutils will build C++ extension modules with \"$CXX\".
   If this is not intended, then set CXX on the configure command line.
   " >&5
-$as_echo "$as_me:
+printf "%s\n" "$as_me:
 
   By default, distutils will build C++ extension modules with \"$CXX\".
   If this is not intended, then set CXX on the configure command line.
@@ -6090,201 +6733,21 @@ $as_echo "$as_me:
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for the platform triplet based on compiler characteristics" >&5
-$as_echo_n "checking for the platform triplet based on compiler characteristics... " >&6; }
-cat > conftest.c <<EOF
-#undef bfin
-#undef cris
-#undef fr30
-#undef linux
-#undef hppa
-#undef hpux
-#undef i386
-#undef mips
-#undef powerpc
-#undef sparc
-#undef unix
-#if defined(__ANDROID__)
-    # Android is not a multiarch system.
-#elif defined(__linux__)
-# if defined(__x86_64__) && defined(__LP64__)
-        x86_64-linux-gnu
-# elif defined(__x86_64__) && defined(__ILP32__)
-        x86_64-linux-gnux32
-# elif defined(__i386__)
-        i386-linux-gnu
-# elif defined(__aarch64__) && defined(__AARCH64EL__)
-#  if defined(__ILP32__)
-        aarch64_ilp32-linux-gnu
-#  else
-        aarch64-linux-gnu
-#  endif
-# elif defined(__aarch64__) && defined(__AARCH64EB__)
-#  if defined(__ILP32__)
-        aarch64_be_ilp32-linux-gnu
-#  else
-        aarch64_be-linux-gnu
-#  endif
-# elif defined(__alpha__)
-        alpha-linux-gnu
-# elif defined(__ARM_EABI__) && defined(__ARM_PCS_VFP)
-#  if defined(__ARMEL__)
-        arm-linux-gnueabihf
-#  else
-        armeb-linux-gnueabihf
-#  endif
-# elif defined(__ARM_EABI__) && !defined(__ARM_PCS_VFP)
-#  if defined(__ARMEL__)
-        arm-linux-gnueabi
-#  else
-        armeb-linux-gnueabi
-#  endif
-# elif defined(__hppa__)
-        hppa-linux-gnu
-# elif defined(__ia64__)
-        ia64-linux-gnu
-# elif defined(__loongarch__)
-#  if defined(__loongarch_lp64)
-#   if defined(__loongarch_soft_float)
-        loongarch64-linux-gnusf
-#   elif defined(__loongarch_single_float)
-        loongarch64-linux-gnuf32
-#   elif defined(__loongarch_double_float)
-        loongarch64-linux-gnu
-#   else
-#    error unknown platform triplet
-#   endif
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__m68k__) && !defined(__mcoldfire__)
-        m68k-linux-gnu
-# elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6) && defined(_MIPSEL)
-#  if _MIPS_SIM == _ABIO32
-        mipsisa32r6el-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mipsisa64r6el-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mipsisa64r6el-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6)
-#  if _MIPS_SIM == _ABIO32
-        mipsisa32r6-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mipsisa64r6-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mipsisa64r6-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__mips_hard_float) && defined(_MIPSEL)
-#  if _MIPS_SIM == _ABIO32
-        mipsel-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mips64el-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mips64el-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__mips_hard_float)
-#  if _MIPS_SIM == _ABIO32
-        mips-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mips64-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mips64-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__or1k__)
-        or1k-linux-gnu
-# elif defined(__powerpc__) && defined(__SPE__)
-        powerpc-linux-gnuspe
-# elif defined(__powerpc64__)
-#  if defined(__LITTLE_ENDIAN__)
-        powerpc64le-linux-gnu
-#  else
-        powerpc64-linux-gnu
-#  endif
-# elif defined(__powerpc__)
-        powerpc-linux-gnu
-# elif defined(__s390x__)
-        s390x-linux-gnu
-# elif defined(__s390__)
-        s390-linux-gnu
-# elif defined(__sh__) && defined(__LITTLE_ENDIAN__)
-        sh4-linux-gnu
-# elif defined(__sparc__) && defined(__arch64__)
-        sparc64-linux-gnu
-# elif defined(__sparc__)
-        sparc-linux-gnu
-# elif defined(__riscv)
-#  if __riscv_xlen == 32
-        riscv32-linux-gnu
-#  elif __riscv_xlen == 64
-        riscv64-linux-gnu
-#  else
-#   error unknown platform triplet
-#  endif
-# else
-#   error unknown platform triplet
-# endif
-#elif defined(__FreeBSD_kernel__)
-# if defined(__LP64__)
-        x86_64-kfreebsd-gnu
-# elif defined(__i386__)
-        i386-kfreebsd-gnu
-# else
-#   error unknown platform triplet
-# endif
-#elif defined(__gnu_hurd__)
-        i386-gnu
-#elif defined(__APPLE__)
-        darwin
-#elif defined(__VXWORKS__)
-        vxworks
-#elif defined(__wasm32__)
-#  if defined(__EMSCRIPTEN__)
-	wasm32-emscripten
-#  elif defined(__wasi__)
-	wasm32-wasi
-#  else
-#    error unknown wasm32 platform
-#  endif
-#elif defined(__wasm64__)
-#  if defined(__EMSCRIPTEN__)
-	wasm64-emscripten
-#  elif defined(__wasi__)
-	wasm64-wasi
-#  else
-#    error unknown wasm64 platform
-#  endif
-#else
-# error unknown platform triplet
-#endif
-
-EOF
-
-if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
-  PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d ' 	'`
-  case "$build_os" in
-  linux-musl*)
-    PLATFORM_TRIPLET=`echo "$PLATFORM_TRIPLET" | sed 's/linux-gnu/linux-musl/'`
-    ;;
-  esac
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PLATFORM_TRIPLET" >&5
-$as_echo "$PLATFORM_TRIPLET" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the platform triplet based on compiler characteristics" >&5
+printf %s "checking for the platform triplet based on compiler characteristics... " >&6; }
+if $CPP $CPPFLAGS $srcdir/Misc/platform_triplet.c >conftest.out 2>/dev/null; then
+  PLATFORM_TRIPLET=`grep '^PLATFORM_TRIPLET=' conftest.out | tr -d ' 	'`
+  PLATFORM_TRIPLET="${PLATFORM_TRIPLET#PLATFORM_TRIPLET=}"
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PLATFORM_TRIPLET" >&5
+printf "%s\n" "$PLATFORM_TRIPLET" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
-$as_echo "none" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none" >&5
+printf "%s\n" "none" >&6; }
 fi
-rm -f conftest.c conftest.out
+rm -f conftest.out
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for multiarch" >&5
-$as_echo_n "checking for multiarch... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for multiarch" >&5
+printf %s "checking for multiarch... " >&6; }
 case $ac_sys_system in #(
   Darwin*) :
     MULTIARCH="" ;; #(
@@ -6295,8 +6758,8 @@ case $ac_sys_system in #(
  ;;
 esac
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MULTIARCH" >&5
-$as_echo "$MULTIARCH" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MULTIARCH" >&5
+printf "%s\n" "$MULTIARCH" >&6; }
 
 if test x$PLATFORM_TRIPLET != x && test x$MULTIARCH != x; then
   if test x$PLATFORM_TRIPLET != x$MULTIARCH; then
@@ -6312,8 +6775,8 @@ if test x$MULTIARCH != x; then
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for PEP 11 support tier" >&5
-$as_echo_n "checking for PEP 11 support tier... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PEP 11 support tier" >&5
+printf %s "checking for PEP 11 support tier... " >&6; }
 case $host/$ac_cv_cc_name in #(
   x86_64-*-linux-gnu/gcc) :
     PY_SUPPORT_TIER=1 ;; #(
@@ -6356,31 +6819,30 @@ esac
 
 case $PY_SUPPORT_TIER in #(
   1) :
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $host/$ac_cv_cc_name has tier 1 (supported)" >&5
-$as_echo "$host/$ac_cv_cc_name has tier 1 (supported)" >&6; } ;; #(
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $host/$ac_cv_cc_name has tier 1 (supported)" >&5
+printf "%s\n" "$host/$ac_cv_cc_name has tier 1 (supported)" >&6; } ;; #(
   2) :
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $host/$ac_cv_cc_name has tier 2 (supported)" >&5
-$as_echo "$host/$ac_cv_cc_name has tier 2 (supported)" >&6; } ;; #(
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $host/$ac_cv_cc_name has tier 2 (supported)" >&5
+printf "%s\n" "$host/$ac_cv_cc_name has tier 2 (supported)" >&6; } ;; #(
   3) :
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $host/$ac_cv_cc_name has tier 3 (partially supported)" >&5
-$as_echo "$host/$ac_cv_cc_name has tier 3 (partially supported)" >&6; } ;; #(
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $host/$ac_cv_cc_name has tier 3 (partially supported)" >&5
+printf "%s\n" "$host/$ac_cv_cc_name has tier 3 (partially supported)" >&6; } ;; #(
   *) :
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $host/$ac_cv_cc_name is not supported" >&5
-$as_echo "$as_me: WARNING: $host/$ac_cv_cc_name is not supported" >&2;}
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $host/$ac_cv_cc_name is not supported" >&5
+printf "%s\n" "$as_me: WARNING: $host/$ac_cv_cc_name is not supported" >&2;}
  ;;
 esac
 
 
-cat >>confdefs.h <<_ACEOF
-#define PY_SUPPORT_TIER $PY_SUPPORT_TIER
-_ACEOF
+printf "%s\n" "#define PY_SUPPORT_TIER $PY_SUPPORT_TIER" >>confdefs.h
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -Wl,--no-as-needed" >&5
-$as_echo_n "checking for -Wl,--no-as-needed... " >&6; }
-if ${ac_cv_wl_no_as_needed+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -Wl,--no-as-needed" >&5
+printf %s "checking for -Wl,--no-as-needed... " >&6; }
+if test ${ac_cv_wl_no_as_needed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   save_LDFLAGS="$LDFLAGS"
   as_fn_append LDFLAGS " -Wl,--no-as-needed"
@@ -6388,31 +6850,32 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   NO_AS_NEEDED="-Wl,--no-as-needed"
      ac_cv_wl_no_as_needed=yes
-else
+else $as_nop
   NO_AS_NEEDED=""
      ac_cv_wl_no_as_needed=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
   LDFLAGS="$save_LDFLAGS"
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_wl_no_as_needed" >&5
-$as_echo "$ac_cv_wl_no_as_needed" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_wl_no_as_needed" >&5
+printf "%s\n" "$ac_cv_wl_no_as_needed" >&6; }
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for the Android API level" >&5
-$as_echo_n "checking for the Android API level... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the Android API level" >&5
+printf %s "checking for the Android API level... " >&6; }
 cat > conftest.c <<EOF
 #ifdef __ANDROID__
 android_api = __ANDROID_API__
@@ -6425,28 +6888,26 @@ EOF
 if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
   ANDROID_API_LEVEL=`sed -n -e '/__ANDROID_API__/d' -e 's/^android_api = //p' conftest.out`
   _arm_arch=`sed -n -e '/__ARM_ARCH/d' -e 's/^arm_arch = //p' conftest.out`
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ANDROID_API_LEVEL" >&5
-$as_echo "$ANDROID_API_LEVEL" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ANDROID_API_LEVEL" >&5
+printf "%s\n" "$ANDROID_API_LEVEL" >&6; }
   if test -z "$ANDROID_API_LEVEL"; then
     as_fn_error $? "Fatal: you must define __ANDROID_API__" "$LINENO" 5
   fi
 
-cat >>confdefs.h <<_ACEOF
-#define ANDROID_API_LEVEL $ANDROID_API_LEVEL
-_ACEOF
+printf "%s\n" "#define ANDROID_API_LEVEL $ANDROID_API_LEVEL" >>confdefs.h
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for the Android arm ABI" >&5
-$as_echo_n "checking for the Android arm ABI... " >&6; }
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $_arm_arch" >&5
-$as_echo "$_arm_arch" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the Android arm ABI" >&5
+printf %s "checking for the Android arm ABI... " >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $_arm_arch" >&5
+printf "%s\n" "$_arm_arch" >&6; }
   if test "$_arm_arch" = 7; then
     BASECFLAGS="${BASECFLAGS} -mfloat-abi=softfp -mfpu=vfpv3-d16"
     LDFLAGS="${LDFLAGS} -march=armv7-a -Wl,--fix-cortex-a8"
   fi
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: not Android" >&5
-$as_echo "not Android" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not Android" >&5
+printf "%s\n" "not Android" >&6; }
 fi
 rm -f conftest.c conftest.out
 
@@ -6461,13 +6922,15 @@ case $ac_sys_system/$ac_sys_release in #(
      ;;
 esac
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-emscripten-target" >&5
-$as_echo_n "checking for --with-emscripten-target... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-emscripten-target" >&5
+printf %s "checking for --with-emscripten-target... " >&6; }
 
 # Check whether --with-emscripten-target was given.
-if test "${with_emscripten_target+set}" = set; then :
+if test ${with_emscripten_target+y}
+then :
   withval=$with_emscripten_target;
-	if test "x$ac_sys_system" = xEmscripten; then :
+	if test "x$ac_sys_system" = xEmscripten
+then :
 
     case $with_emscripten_target in #(
   browser) :
@@ -6483,27 +6946,29 @@ if test "${with_emscripten_target+set}" = set; then :
      ;;
 esac
 
-else
+else $as_nop
 
     as_fn_error $? "--with-emscripten-target only applies to Emscripten" "$LINENO" 5
 
 fi
 
-else
+else $as_nop
 
-  if test "x$ac_sys_system" = xEmscripten; then :
+  if test "x$ac_sys_system" = xEmscripten
+then :
   ac_sys_emscripten_target=browser
 fi
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_sys_emscripten_target" >&5
-$as_echo "$ac_sys_emscripten_target" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_sys_emscripten_target" >&5
+printf "%s\n" "$ac_sys_emscripten_target" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-wasm-dynamic-linking" >&5
-$as_echo_n "checking for --enable-wasm-dynamic-linking... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-wasm-dynamic-linking" >&5
+printf %s "checking for --enable-wasm-dynamic-linking... " >&6; }
 # Check whether --enable-wasm-dynamic-linking was given.
-if test "${enable_wasm_dynamic_linking+set}" = set; then :
+if test ${enable_wasm_dynamic_linking+y}
+then :
   enableval=$enable_wasm_dynamic_linking;
   case $ac_sys_system in #(
   Emscripten) :
@@ -6515,44 +6980,46 @@ if test "${enable_wasm_dynamic_linking+set}" = set; then :
    ;;
 esac
 
-else
+else $as_nop
 
   enable_wasm_dynamic_linking=missing
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_wasm_dynamic_linking" >&5
-$as_echo "$enable_wasm_dynamic_linking" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_wasm_dynamic_linking" >&5
+printf "%s\n" "$enable_wasm_dynamic_linking" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-wasm-pthreads" >&5
-$as_echo_n "checking for --enable-wasm-pthreads... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-wasm-pthreads" >&5
+printf %s "checking for --enable-wasm-pthreads... " >&6; }
 # Check whether --enable-wasm-pthreads was given.
-if test "${enable_wasm_pthreads+set}" = set; then :
+if test ${enable_wasm_pthreads+y}
+then :
   enableval=$enable_wasm_pthreads;
   case $ac_sys_system in #(
   Emscripten) :
      ;; #(
   WASI) :
-    as_fn_error $? "WASI threading is not implemented yet." "$LINENO" 5 ;; #(
+     ;; #(
   *) :
     as_fn_error $? "--enable-wasm-pthreads only applies to Emscripten and WASI" "$LINENO" 5
    ;;
 esac
 
-else
+else $as_nop
 
   enable_wasm_pthreads=missing
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_wasm_pthreads" >&5
-$as_echo "$enable_wasm_pthreads" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_wasm_pthreads" >&5
+printf "%s\n" "$enable_wasm_pthreads" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-suffix" >&5
-$as_echo_n "checking for --with-suffix... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-suffix" >&5
+printf %s "checking for --with-suffix... " >&6; }
 
 # Check whether --with-suffix was given.
-if test "${with_suffix+set}" = set; then :
+if test ${with_suffix+y}
+then :
   withval=$with_suffix;
 	case $with_suffix in #(
   no) :
@@ -6564,7 +7031,7 @@ if test "${with_suffix+set}" = set; then :
    ;;
 esac
 
-else
+else $as_nop
 
   case $ac_sys_system/$ac_sys_emscripten_target in #(
   Emscripten/browser*) :
@@ -6580,26 +7047,26 @@ esac
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $EXEEXT" >&5
-$as_echo "$EXEEXT" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $EXEEXT" >&5
+printf "%s\n" "$EXEEXT" >&6; }
 
 # Test whether we're running on a non-case-sensitive system, in which
 # case we give a warning if no ext is given
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for case-insensitive build directory" >&5
-$as_echo_n "checking for case-insensitive build directory... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for case-insensitive build directory" >&5
+printf %s "checking for case-insensitive build directory... " >&6; }
 if test ! -d CaseSensitiveTestDir; then
 mkdir CaseSensitiveTestDir
 fi
 
 if test -d casesensitivetestdir && test -z "$EXEEXT"
 then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
     BUILDEXEEXT=.exe
 else
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 	BUILDEXEEXT=$EXEEXT
 fi
 rmdir CaseSensitiveTestDir
@@ -6612,14 +7079,14 @@ hp*|HP*)
 esac
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LIBRARY" >&5
-$as_echo_n "checking LIBRARY... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LIBRARY" >&5
+printf %s "checking LIBRARY... " >&6; }
 if test -z "$LIBRARY"
 then
 	LIBRARY='libpython$(VERSION)$(ABIFLAGS).a'
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIBRARY" >&5
-$as_echo "$LIBRARY" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LIBRARY" >&5
+printf "%s\n" "$LIBRARY" >&6; }
 
 # LDLIBRARY is the name of the library to link against (as opposed to the
 # name of the library into which to insert object files). BLDLIBRARY is also
@@ -6658,8 +7125,8 @@ LDVERSION="$VERSION"
 # compiled with CXX, LINKCC is CXX instead. Always using CXX is undesirable:
 # python might then depend on the C++ runtime
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LINKCC" >&5
-$as_echo_n "checking LINKCC... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LINKCC" >&5
+printf %s "checking LINKCC... " >&6; }
 if test -z "$LINKCC"
 then
 	LINKCC='$(PURIFY) $(CC)'
@@ -6670,8 +7137,8 @@ then
 	   LINKCC=qcc;;
 	esac
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LINKCC" >&5
-$as_echo "$LINKCC" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LINKCC" >&5
+printf "%s\n" "$LINKCC" >&6; }
 
 # EXPORTSYMS holds the list of exported symbols for AIX.
 # EXPORTSFROM holds the module name exporting symbols on AIX.
@@ -6679,16 +7146,16 @@ EXPORTSYMS=
 EXPORTSFROM=
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking EXPORTSYMS" >&5
-$as_echo_n "checking EXPORTSYMS... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking EXPORTSYMS" >&5
+printf %s "checking EXPORTSYMS... " >&6; }
 case $ac_sys_system in
 AIX*)
 	EXPORTSYMS="Modules/python.exp"
 	EXPORTSFROM=. # the main executable
 	;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $EXPORTSYMS" >&5
-$as_echo "$EXPORTSYMS" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $EXPORTSYMS" >&5
+printf "%s\n" "$EXPORTSYMS" >&6; }
 
 # GNULD is set to "yes" if the GNU linker is used.  If this goes wrong
 # make sure we default having it set to "no": this is used by
@@ -6696,8 +7163,8 @@ $as_echo "$EXPORTSYMS" >&6; }
 # to linker command lines, and failing to detect GNU ld simply results
 # in the same behaviour as before.
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
-$as_echo_n "checking for GNU ld... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+printf %s "checking for GNU ld... " >&6; }
 ac_prog=ld
 if test "$GCC" = yes; then
        ac_prog=`$CC -print-prog-name=ld`
@@ -6708,13 +7175,14 @@ case `"$ac_prog" -V 2>&1 < /dev/null` in
       *)
           GNULD=no;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $GNULD" >&5
-$as_echo "$GNULD" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $GNULD" >&5
+printf "%s\n" "$GNULD" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-shared" >&5
-$as_echo_n "checking for --enable-shared... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-shared" >&5
+printf %s "checking for --enable-shared... " >&6; }
 # Check whether --enable-shared was given.
-if test "${enable_shared+set}" = set; then :
+if test ${enable_shared+y}
+then :
   enableval=$enable_shared;
 fi
 
@@ -6728,37 +7196,39 @@ then
     enable_shared="no";;
   esac
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
-$as_echo "$enable_shared" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
+printf "%s\n" "$enable_shared" >&6; }
 
 # --with-static-libpython
 STATIC_LIBPYTHON=1
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-static-libpython" >&5
-$as_echo_n "checking for --with-static-libpython... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-static-libpython" >&5
+printf %s "checking for --with-static-libpython... " >&6; }
 
 # Check whether --with-static-libpython was given.
-if test "${with_static_libpython+set}" = set; then :
+if test ${with_static_libpython+y}
+then :
   withval=$with_static_libpython;
 if test "$withval" = no
 then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; };
   STATIC_LIBPYTHON=0
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; };
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 fi
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-profiling" >&5
-$as_echo_n "checking for --enable-profiling... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-profiling" >&5
+printf %s "checking for --enable-profiling... " >&6; }
 # Check whether --enable-profiling was given.
-if test "${enable_profiling+set}" = set; then :
+if test ${enable_profiling+y}
+then :
   enableval=$enable_profiling;
 fi
 
@@ -6769,27 +7239,28 @@ if test "x$enable_profiling" = xyes; then
 /* end confdefs.h.  */
 int main(void) { return 0; }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
 
-else
+else $as_nop
   enable_profiling=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
   CC="$ac_save_cc"
 else
   enable_profiling=no
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_profiling" >&5
-$as_echo "$enable_profiling" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_profiling" >&5
+printf "%s\n" "$enable_profiling" >&6; }
 
 if test "x$enable_profiling" = xyes; then
   BASECFLAGS="-pg $BASECFLAGS"
   LDFLAGS="-pg $LDFLAGS"
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LDLIBRARY" >&5
-$as_echo_n "checking LDLIBRARY... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LDLIBRARY" >&5
+printf %s "checking LDLIBRARY... " >&6; }
 
 # MacOSX framework builds need more magic. LDLIBRARY is the dynamic
 # library that we build, but we do not want to link against it (we
@@ -6810,7 +7281,7 @@ fi
 if test $enable_shared = "yes"; then
   PY_ENABLE_SHARED=1
 
-$as_echo "#define Py_ENABLE_SHARED 1" >>confdefs.h
+printf "%s\n" "#define Py_ENABLE_SHARED 1" >>confdefs.h
 
   case $ac_sys_system in
     CYGWIN*)
@@ -6883,11 +7354,12 @@ then
       if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}node", so it can be a program name with args.
 set dummy ${ac_tool_prefix}node; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_NODE+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_NODE+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $NODE in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_NODE="$NODE" # Let the user override the test with a path.
@@ -6897,11 +7369,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_NODE="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_NODE="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -6913,11 +7389,11 @@ esac
 fi
 NODE=$ac_cv_path_NODE
 if test -n "$NODE"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NODE" >&5
-$as_echo "$NODE" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NODE" >&5
+printf "%s\n" "$NODE" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -6926,11 +7402,12 @@ if test -z "$ac_cv_path_NODE"; then
   ac_pt_NODE=$NODE
   # Extract the first word of "node", so it can be a program name with args.
 set dummy node; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_NODE+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_NODE+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_NODE in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_NODE="$ac_pt_NODE" # Let the user override the test with a path.
@@ -6940,11 +7417,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_NODE="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_NODE="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -6956,11 +7437,11 @@ esac
 fi
 ac_pt_NODE=$ac_cv_path_ac_pt_NODE
 if test -n "$ac_pt_NODE"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_NODE" >&5
-$as_echo "$ac_pt_NODE" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_NODE" >&5
+printf "%s\n" "$ac_pt_NODE" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_NODE" = x; then
@@ -6968,8 +7449,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     NODE=$ac_pt_NODE
@@ -6981,11 +7462,12 @@ fi
       HOSTRUNNER="$NODE"
       # bigint for ctypes c_longlong, c_longdouble
       # no longer available in Node 16
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for node --experimental-wasm-bigint" >&5
-$as_echo_n "checking for node --experimental-wasm-bigint... " >&6; }
-if ${ac_cv_tool_node_wasm_bigint+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for node --experimental-wasm-bigint" >&5
+printf %s "checking for node --experimental-wasm-bigint... " >&6; }
+if test ${ac_cv_tool_node_wasm_bigint+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
         if $NODE -v --experimental-wasm-bigint > /dev/null 2>&1; then
           ac_cv_tool_node_wasm_bigint=yes
@@ -6994,23 +7476,26 @@ else
         fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_tool_node_wasm_bigint" >&5
-$as_echo "$ac_cv_tool_node_wasm_bigint" >&6; }
-      if test "x$ac_cv_tool_node_wasm_bigint" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_tool_node_wasm_bigint" >&5
+printf "%s\n" "$ac_cv_tool_node_wasm_bigint" >&6; }
+      if test "x$ac_cv_tool_node_wasm_bigint" = xyes
+then :
 
         as_fn_append HOSTRUNNER " --experimental-wasm-bigint"
 
 fi
 
-      if test "x$enable_wasm_pthreads" = xyes; then :
+      if test "x$enable_wasm_pthreads" = xyes
+then :
 
         as_fn_append HOSTRUNNER " --experimental-wasm-threads"
         # no longer available in Node 16
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for node --experimental-wasm-bulk-memory" >&5
-$as_echo_n "checking for node --experimental-wasm-bulk-memory... " >&6; }
-if ${ac_cv_tool_node_wasm_bulk_memory+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for node --experimental-wasm-bulk-memory" >&5
+printf %s "checking for node --experimental-wasm-bulk-memory... " >&6; }
+if test ${ac_cv_tool_node_wasm_bulk_memory+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
           if $NODE -v --experimental-wasm-bulk-memory > /dev/null 2>&1; then
             ac_cv_tool_node_wasm_bulk_memory=yes
@@ -7019,9 +7504,10 @@ else
           fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_tool_node_wasm_bulk_memory" >&5
-$as_echo "$ac_cv_tool_node_wasm_bulk_memory" >&6; }
-        if test "x$ac_cv_tool_node_wasm_bulk_memory" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_tool_node_wasm_bulk_memory" >&5
+printf "%s\n" "$ac_cv_tool_node_wasm_bulk_memory" >&6; }
+        if test "x$ac_cv_tool_node_wasm_bulk_memory" = xyes
+then :
 
           as_fn_append HOSTRUNNER " --experimental-wasm-bulk-memory"
 
@@ -7029,7 +7515,8 @@ fi
 
 fi
 
-      if test "x$host_cpu" = xwasm64; then :
+      if test "x$host_cpu" = xwasm64
+then :
   as_fn_append HOSTRUNNER " --experimental-wasm-memory64"
 fi
      ;; #(
@@ -7041,17 +7528,17 @@ fi
 esac
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking HOSTRUNNER" >&5
-$as_echo_n "checking HOSTRUNNER... " >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $HOSTRUNNER" >&5
-$as_echo "$HOSTRUNNER" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking HOSTRUNNER" >&5
+printf %s "checking HOSTRUNNER... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $HOSTRUNNER" >&5
+printf "%s\n" "$HOSTRUNNER" >&6; }
 
 if test -n "$HOSTRUNNER"; then
     PYTHON_FOR_BUILD="_PYTHON_HOSTRUNNER='$HOSTRUNNER' $PYTHON_FOR_BUILD"
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LDLIBRARY" >&5
-$as_echo "$LDLIBRARY" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LDLIBRARY" >&5
+printf "%s\n" "$LDLIBRARY" >&6; }
 
 # LIBRARY_DEPS, LINK_PYTHON_OBJS and LINK_PYTHON_DEPS variable
 case $ac_sys_system/$ac_sys_emscripten_target in #(
@@ -7090,11 +7577,12 @@ if test -n "$ac_tool_prefix"; then
   do
     # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_AR+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$AR"; then
   ac_cv_prog_AR="$AR" # Let the user override the test.
 else
@@ -7102,11 +7590,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_AR="$ac_tool_prefix$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -7117,11 +7609,11 @@ fi
 fi
 AR=$ac_cv_prog_AR
 if test -n "$AR"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
-$as_echo "$AR" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+printf "%s\n" "$AR" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -7134,11 +7626,12 @@ if test -z "$AR"; then
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_AR+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$ac_ct_AR"; then
   ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
 else
@@ -7146,11 +7639,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_AR="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -7161,11 +7658,11 @@ fi
 fi
 ac_ct_AR=$ac_cv_prog_ac_ct_AR
 if test -n "$ac_ct_AR"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
-$as_echo "$ac_ct_AR" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+printf "%s\n" "$ac_ct_AR" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -7177,8 +7674,8 @@ done
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     AR=$ac_ct_AR
@@ -7201,7 +7698,8 @@ hp*|HP*)
 		INSTALL="${srcdir}/install-sh -c"
 	fi
 esac
-# Find a good install program.  We prefer a C program (faster),
+
+  # Find a good install program.  We prefer a C program (faster),
 # so one script is as good as another.  But avoid the broken or
 # incompatible versions:
 # SysV /etc/install, /usr/sbin/install
@@ -7215,20 +7713,25 @@ esac
 # OS/2's system install, which has a completely different semantic
 # ./install, which can be erroneously created by make from ./install.sh.
 # Reject install programs that cannot install multiple files.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
-$as_echo_n "checking for a BSD-compatible install... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+printf %s "checking for a BSD-compatible install... " >&6; }
 if test -z "$INSTALL"; then
-if ${ac_cv_path_install+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test ${ac_cv_path_install+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    # Account for people who put trailing slashes in PATH elements.
-case $as_dir/ in #((
-  ./ | .// | /[cC]/* | \
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    # Account for fact that we put trailing slashes in our PATH walk.
+case $as_dir in #((
+  ./ | /[cC]/* | \
   /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
   ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
   /usr/ucb/* ) ;;
@@ -7238,13 +7741,13 @@ case $as_dir/ in #((
     # by default.
     for ac_prog in ginstall scoinst install; do
       for ac_exec_ext in '' $ac_executable_extensions; do
-	if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+	if as_fn_executable_p "$as_dir$ac_prog$ac_exec_ext"; then
 	  if test $ac_prog = install &&
-	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    grep dspmsg "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
 	    # AIX install.  It has an incompatible calling convention.
 	    :
 	  elif test $ac_prog = install &&
-	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    grep pwplus "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
 	    # program-specific install script used by HP pwplus--don't use.
 	    :
 	  else
@@ -7252,12 +7755,12 @@ case $as_dir/ in #((
 	    echo one > conftest.one
 	    echo two > conftest.two
 	    mkdir conftest.dir
-	    if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+	    if "$as_dir$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir/" &&
 	      test -s conftest.one && test -s conftest.two &&
 	      test -s conftest.dir/conftest.one &&
 	      test -s conftest.dir/conftest.two
 	    then
-	      ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	      ac_cv_path_install="$as_dir$ac_prog$ac_exec_ext -c"
 	      break 3
 	    fi
 	  fi
@@ -7273,7 +7776,7 @@ IFS=$as_save_IFS
 rm -rf conftest.one conftest.two conftest.dir
 
 fi
-  if test "${ac_cv_path_install+set}" = set; then
+  if test ${ac_cv_path_install+y}; then
     INSTALL=$ac_cv_path_install
   else
     # As a last resort, use the slow shell script.  Don't cache a
@@ -7283,8 +7786,8 @@ fi
     INSTALL=$ac_install_sh
   fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
-$as_echo "$INSTALL" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+printf "%s\n" "$INSTALL" >&6; }
 
 # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
 # It thinks the first close brace ends the variable substitution.
@@ -7294,25 +7797,31 @@ test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
 
 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
-$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a race-free mkdir -p" >&5
+printf %s "checking for a race-free mkdir -p... " >&6; }
 if test -z "$MKDIR_P"; then
-  if ${ac_cv_path_mkdir+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  if test ${ac_cv_path_mkdir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_prog in mkdir gmkdir; do
 	 for ac_exec_ext in '' $ac_executable_extensions; do
-	   as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext" || continue
-	   case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
-	     'mkdir (GNU coreutils) '* | \
-	     'mkdir (coreutils) '* | \
+	   as_fn_executable_p "$as_dir$ac_prog$ac_exec_ext" || continue
+	   case `"$as_dir$ac_prog$ac_exec_ext" --version 2>&1` in #(
+	     'mkdir ('*'coreutils) '* | \
+	     'BusyBox '* | \
 	     'mkdir (fileutils) '4.1*)
-	       ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+	       ac_cv_path_mkdir=$as_dir$ac_prog$ac_exec_ext
 	       break 3;;
 	   esac
 	 done
@@ -7323,7 +7832,7 @@ IFS=$as_save_IFS
 fi
 
   test -d ./--version && rmdir ./--version
-  if test "${ac_cv_path_mkdir+set}" = set; then
+  if test ${ac_cv_path_mkdir+y}; then
     MKDIR_P="$ac_cv_path_mkdir -p"
   else
     # As a last resort, use the slow shell script.  Don't cache a
@@ -7333,8 +7842,8 @@ fi
     MKDIR_P="$ac_install_sh -d"
   fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
-$as_echo "$MKDIR_P" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+printf "%s\n" "$MKDIR_P" >&6; }
 
 
 # Not every filesystem supports hard links
@@ -7350,72 +7859,107 @@ fi
 
 ABIFLAGS=""
 
+# Check for --disable-gil
+# --disable-gil
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --disable-gil" >&5
+printf %s "checking for --disable-gil... " >&6; }
+# Check whether --enable-gil was given.
+if test ${enable_gil+y}
+then :
+  enableval=$enable_gil; if test "x$enable_gil" = xyes
+then :
+  disable_gil=no
+else $as_nop
+  disable_gil=yes
+fi
+else $as_nop
+  disable_gil=no
+
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $disable_gil" >&5
+printf "%s\n" "$disable_gil" >&6; }
+
+if test "$disable_gil" = "yes"
+then
+
+printf "%s\n" "#define Py_GIL_DISABLED 1" >>confdefs.h
+
+  # Add "t" for "threaded"
+  ABIFLAGS="${ABIFLAGS}t"
+fi
+
 # Check for --with-pydebug
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-pydebug" >&5
-$as_echo_n "checking for --with-pydebug... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-pydebug" >&5
+printf %s "checking for --with-pydebug... " >&6; }
 
 # Check whether --with-pydebug was given.
-if test "${with_pydebug+set}" = set; then :
+if test ${with_pydebug+y}
+then :
   withval=$with_pydebug;
 if test "$withval" != no
 then
 
-$as_echo "#define Py_DEBUG 1" >>confdefs.h
+printf "%s\n" "#define Py_DEBUG 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; };
   Py_DEBUG='true'
   ABIFLAGS="${ABIFLAGS}d"
-else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }; Py_DEBUG='false'
+else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }; Py_DEBUG='false'
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
 # Check for --with-trace-refs
 # --with-trace-refs
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-trace-refs" >&5
-$as_echo_n "checking for --with-trace-refs... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-trace-refs" >&5
+printf %s "checking for --with-trace-refs... " >&6; }
 
 # Check whether --with-trace-refs was given.
-if test "${with_trace_refs+set}" = set; then :
+if test ${with_trace_refs+y}
+then :
   withval=$with_trace_refs;
-else
+else $as_nop
   with_trace_refs=no
+
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_trace_refs" >&5
-$as_echo "$with_trace_refs" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_trace_refs" >&5
+printf "%s\n" "$with_trace_refs" >&6; }
 
 if test "$with_trace_refs" = "yes"
 then
 
-$as_echo "#define Py_TRACE_REFS 1" >>confdefs.h
+printf "%s\n" "#define Py_TRACE_REFS 1" >>confdefs.h
 
 fi
 
 
 # Check for --enable-pystats
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-pystats" >&5
-$as_echo_n "checking for --enable-pystats... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-pystats" >&5
+printf %s "checking for --enable-pystats... " >&6; }
 # Check whether --enable-pystats was given.
-if test "${enable_pystats+set}" = set; then :
+if test ${enable_pystats+y}
+then :
   enableval=$enable_pystats;
-else
+else $as_nop
   enable_pystats=no
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_pystats" >&5
-$as_echo "$enable_pystats" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_pystats" >&5
+printf "%s\n" "$enable_pystats" >&6; }
 
-if test "x$enable_pystats" = xyes; then :
+if test "x$enable_pystats" = xyes
+then :
 
 
-$as_echo "#define Py_STATS 1" >>confdefs.h
+printf "%s\n" "#define Py_STATS 1" >>confdefs.h
 
 
 fi
@@ -7423,11 +7967,12 @@ fi
 # Check for --with-assertions.
 # This allows enabling assertions without Py_DEBUG.
 assertions='false'
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-assertions" >&5
-$as_echo_n "checking for --with-assertions... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-assertions" >&5
+printf %s "checking for --with-assertions... " >&6; }
 
 # Check whether --with-assertions was given.
-if test "${with_assertions+set}" = set; then :
+if test ${with_assertions+y}
+then :
   withval=$with_assertions;
 if test "$withval" != no
 then
@@ -7436,39 +7981,40 @@ fi
 fi
 
 if test "$assertions" = 'true'; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 elif test "$Py_DEBUG" = 'true'; then
   assertions='true'
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: implied by --with-pydebug" >&5
-$as_echo "implied by --with-pydebug" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: implied by --with-pydebug" >&5
+printf "%s\n" "implied by --with-pydebug" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 # Enable optimization flags
 
 
 Py_OPT='false'
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-optimizations" >&5
-$as_echo_n "checking for --enable-optimizations... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-optimizations" >&5
+printf %s "checking for --enable-optimizations... " >&6; }
 # Check whether --enable-optimizations was given.
-if test "${enable_optimizations+set}" = set; then :
+if test ${enable_optimizations+y}
+then :
   enableval=$enable_optimizations;
 if test "$enableval" != no
 then
   Py_OPT='true'
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; };
 else
   Py_OPT='false'
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; };
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -7482,11 +8028,12 @@ if test "$Py_OPT" = 'true' ; then
   DEF_MAKE_RULE="build_all"
   case $CC in
     *gcc*)
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fno-semantic-interposition" >&5
-$as_echo_n "checking whether C compiler accepts -fno-semantic-interposition... " >&6; }
-if ${ax_cv_check_cflags___fno_semantic_interposition+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fno-semantic-interposition" >&5
+printf %s "checking whether C compiler accepts -fno-semantic-interposition... " >&6; }
+if test ${ax_cv_check_cflags___fno_semantic_interposition+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   ax_check_save_flags=$CFLAGS
   CFLAGS="$CFLAGS  -fno-semantic-interposition"
@@ -7494,29 +8041,31 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ax_cv_check_cflags___fno_semantic_interposition=yes
-else
+else $as_nop
   ax_cv_check_cflags___fno_semantic_interposition=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$ax_check_save_flags
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fno_semantic_interposition" >&5
-$as_echo "$ax_cv_check_cflags___fno_semantic_interposition" >&6; }
-if test "x$ax_cv_check_cflags___fno_semantic_interposition" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fno_semantic_interposition" >&5
+printf "%s\n" "$ax_cv_check_cflags___fno_semantic_interposition" >&6; }
+if test "x$ax_cv_check_cflags___fno_semantic_interposition" = xyes
+then :
 
       CFLAGS_NODIST="$CFLAGS_NODIST -fno-semantic-interposition"
       LDFLAGS_NODIST="$LDFLAGS_NODIST -fno-semantic-interposition"
 
-else
+else $as_nop
   :
 fi
 
@@ -7533,14 +8082,14 @@ else
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking PROFILE_TASK" >&5
-$as_echo_n "checking PROFILE_TASK... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking PROFILE_TASK" >&5
+printf %s "checking PROFILE_TASK... " >&6; }
 if test -z "$PROFILE_TASK"
 then
 	PROFILE_TASK='-m test --pgo --timeout=$(TESTTIMEOUT)'
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $PROFILE_TASK" >&5
-$as_echo "$PROFILE_TASK" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PROFILE_TASK" >&5
+printf "%s\n" "$PROFILE_TASK" >&6; }
 
 # Make llvm-related checks work on systems where llvm tools are not installed with their
 # normal names in the default $PATH (ie: Ubuntu).  They exist under the
@@ -7563,35 +8112,36 @@ then
 fi
 
 # Enable LTO flags
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-lto" >&5
-$as_echo_n "checking for --with-lto... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-lto" >&5
+printf %s "checking for --with-lto... " >&6; }
 
 # Check whether --with-lto was given.
-if test "${with_lto+set}" = set; then :
+if test ${with_lto+y}
+then :
   withval=$with_lto;
 case "$withval" in
     full)
         Py_LTO='true'
         Py_LTO_POLICY='full'
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
         ;;
     thin)
         Py_LTO='true'
         Py_LTO_POLICY='thin'
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
         ;;
     yes)
         Py_LTO='true'
         Py_LTO_POLICY='default'
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
         ;;
     no)
         Py_LTO='false'
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
         ;;
     *)
         Py_LTO='false'
@@ -7599,20 +8149,21 @@ $as_echo "no" >&6; }
         ;;
 esac
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 if test "$Py_LTO" = 'true' ; then
   case $CC in
     *clang*)
       LDFLAGS_NOLTO="-fno-lto"
-                  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
-$as_echo_n "checking whether C compiler accepts -flto=thin... " >&6; }
-if ${ax_cv_check_cflags___flto_thin+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+                  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
+printf %s "checking whether C compiler accepts -flto=thin... " >&6; }
+if test ${ax_cv_check_cflags___flto_thin+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   ax_check_save_flags=$CFLAGS
   CFLAGS="$CFLAGS  -flto=thin"
@@ -7620,26 +8171,28 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ax_cv_check_cflags___flto_thin=yes
-else
+else $as_nop
   ax_cv_check_cflags___flto_thin=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$ax_check_save_flags
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___flto_thin" >&5
-$as_echo "$ax_cv_check_cflags___flto_thin" >&6; }
-if test "x$ax_cv_check_cflags___flto_thin" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___flto_thin" >&5
+printf "%s\n" "$ax_cv_check_cflags___flto_thin" >&6; }
+if test "x$ax_cv_check_cflags___flto_thin" = xyes
+then :
   LDFLAGS_NOLTO="-flto=thin"
-else
+else $as_nop
   LDFLAGS_NOLTO="-flto"
 fi
 
@@ -7647,11 +8200,12 @@ fi
       if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}llvm-ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}llvm-ar; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_LLVM_AR+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_LLVM_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $LLVM_AR in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_LLVM_AR="$LLVM_AR" # Let the user override the test with a path.
@@ -7661,11 +8215,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_LLVM_AR="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_LLVM_AR="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -7677,11 +8235,11 @@ esac
 fi
 LLVM_AR=$ac_cv_path_LLVM_AR
 if test -n "$LLVM_AR"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LLVM_AR" >&5
-$as_echo "$LLVM_AR" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LLVM_AR" >&5
+printf "%s\n" "$LLVM_AR" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -7690,11 +8248,12 @@ if test -z "$ac_cv_path_LLVM_AR"; then
   ac_pt_LLVM_AR=$LLVM_AR
   # Extract the first word of "llvm-ar", so it can be a program name with args.
 set dummy llvm-ar; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_LLVM_AR+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_LLVM_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_LLVM_AR in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_LLVM_AR="$ac_pt_LLVM_AR" # Let the user override the test with a path.
@@ -7704,11 +8263,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_LLVM_AR="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_LLVM_AR="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -7720,11 +8283,11 @@ esac
 fi
 ac_pt_LLVM_AR=$ac_cv_path_ac_pt_LLVM_AR
 if test -n "$ac_pt_LLVM_AR"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_LLVM_AR" >&5
-$as_echo "$ac_pt_LLVM_AR" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_LLVM_AR" >&5
+printf "%s\n" "$ac_pt_LLVM_AR" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_LLVM_AR" = x; then
@@ -7732,8 +8295,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     LLVM_AR=$ac_pt_LLVM_AR
@@ -7757,8 +8320,8 @@ fi
         then
           LLVM_AR='/usr/bin/xcrun ar'
           LLVM_AR_FOUND=found
-          { $as_echo "$as_me:${as_lineno-$LINENO}: llvm-ar found via xcrun: ${LLVM_AR}" >&5
-$as_echo "$as_me: llvm-ar found via xcrun: ${LLVM_AR}" >&6;}
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: llvm-ar found via xcrun: ${LLVM_AR}" >&5
+printf "%s\n" "$as_me: llvm-ar found via xcrun: ${LLVM_AR}" >&6;}
         fi
       fi
       if test $LLVM_AR_FOUND = not-found
@@ -7775,11 +8338,12 @@ $as_echo "$as_me: llvm-ar found via xcrun: ${LLVM_AR}" >&6;}
           if test $Py_LTO_POLICY = default
           then
             # Check that ThinLTO is accepted.
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
-$as_echo_n "checking whether C compiler accepts -flto=thin... " >&6; }
-if ${ax_cv_check_cflags___flto_thin+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
+printf %s "checking whether C compiler accepts -flto=thin... " >&6; }
+if test ${ax_cv_check_cflags___flto_thin+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   ax_check_save_flags=$CFLAGS
   CFLAGS="$CFLAGS  -flto=thin"
@@ -7787,29 +8351,31 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ax_cv_check_cflags___flto_thin=yes
-else
+else $as_nop
   ax_cv_check_cflags___flto_thin=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$ax_check_save_flags
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___flto_thin" >&5
-$as_echo "$ax_cv_check_cflags___flto_thin" >&6; }
-if test "x$ax_cv_check_cflags___flto_thin" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___flto_thin" >&5
+printf "%s\n" "$ax_cv_check_cflags___flto_thin" >&6; }
+if test "x$ax_cv_check_cflags___flto_thin" = xyes
+then :
 
               LTOFLAGS="-flto=thin -Wl,-export_dynamic -Wl,-object_path_lto,\"\$@\".lto"
               LTOCFLAGS="-flto=thin"
 
-else
+else $as_nop
 
               LTOFLAGS="-flto -Wl,-export_dynamic -Wl,-object_path_lto,\"\$@\".lto"
               LTOCFLAGS="-flto"
@@ -7826,11 +8392,12 @@ fi
           if test $Py_LTO_POLICY = default
           then
             # Check that ThinLTO is accepted
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
-$as_echo_n "checking whether C compiler accepts -flto=thin... " >&6; }
-if ${ax_cv_check_cflags___flto_thin+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
+printf %s "checking whether C compiler accepts -flto=thin... " >&6; }
+if test ${ax_cv_check_cflags___flto_thin+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   ax_check_save_flags=$CFLAGS
   CFLAGS="$CFLAGS  -flto=thin"
@@ -7838,26 +8405,28 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ax_cv_check_cflags___flto_thin=yes
-else
+else $as_nop
   ax_cv_check_cflags___flto_thin=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$ax_check_save_flags
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___flto_thin" >&5
-$as_echo "$ax_cv_check_cflags___flto_thin" >&6; }
-if test "x$ax_cv_check_cflags___flto_thin" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___flto_thin" >&5
+printf "%s\n" "$ax_cv_check_cflags___flto_thin" >&6; }
+if test "x$ax_cv_check_cflags___flto_thin" = xyes
+then :
   LTOFLAGS="-flto=thin"
-else
+else $as_nop
   LTOFLAGS="-flto"
 fi
 
@@ -7913,11 +8482,12 @@ fi
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}llvm-profdata", so it can be a program name with args.
 set dummy ${ac_tool_prefix}llvm-profdata; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_LLVM_PROFDATA+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_LLVM_PROFDATA+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $LLVM_PROFDATA in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_LLVM_PROFDATA="$LLVM_PROFDATA" # Let the user override the test with a path.
@@ -7927,11 +8497,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_LLVM_PROFDATA="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_LLVM_PROFDATA="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -7943,11 +8517,11 @@ esac
 fi
 LLVM_PROFDATA=$ac_cv_path_LLVM_PROFDATA
 if test -n "$LLVM_PROFDATA"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LLVM_PROFDATA" >&5
-$as_echo "$LLVM_PROFDATA" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LLVM_PROFDATA" >&5
+printf "%s\n" "$LLVM_PROFDATA" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -7956,11 +8530,12 @@ if test -z "$ac_cv_path_LLVM_PROFDATA"; then
   ac_pt_LLVM_PROFDATA=$LLVM_PROFDATA
   # Extract the first word of "llvm-profdata", so it can be a program name with args.
 set dummy llvm-profdata; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_LLVM_PROFDATA+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_LLVM_PROFDATA+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_LLVM_PROFDATA in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_LLVM_PROFDATA="$ac_pt_LLVM_PROFDATA" # Let the user override the test with a path.
@@ -7970,11 +8545,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_LLVM_PROFDATA="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_LLVM_PROFDATA="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -7986,11 +8565,11 @@ esac
 fi
 ac_pt_LLVM_PROFDATA=$ac_cv_path_ac_pt_LLVM_PROFDATA
 if test -n "$ac_pt_LLVM_PROFDATA"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_LLVM_PROFDATA" >&5
-$as_echo "$ac_pt_LLVM_PROFDATA" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_LLVM_PROFDATA" >&5
+printf "%s\n" "$ac_pt_LLVM_PROFDATA" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_LLVM_PROFDATA" = x; then
@@ -7998,8 +8577,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     LLVM_PROFDATA=$ac_pt_LLVM_PROFDATA
@@ -8024,12 +8603,15 @@ then
     # https://apple.stackexchange.com/questions/197053/
     LLVM_PROFDATA='/usr/bin/xcrun llvm-profdata'
     LLVM_PROF_FOUND=found
-    { $as_echo "$as_me:${as_lineno-$LINENO}: llvm-profdata found via xcrun: ${LLVM_PROFDATA}" >&5
-$as_echo "$as_me: llvm-profdata found via xcrun: ${LLVM_PROFDATA}" >&6;}
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: llvm-profdata found via xcrun: ${LLVM_PROFDATA}" >&5
+printf "%s\n" "$as_me: llvm-profdata found via xcrun: ${LLVM_PROFDATA}" >&6;}
   fi
 fi
 LLVM_PROF_ERR=no
-case $CC in
+
+# GNU Autoconf recommends the use of expr instead of basename.
+CC_BASENAME=$(expr "//$CC" : '.*/\(.*\)')
+case "$CC_BASENAME" in
   *clang*)
     # Any changes made here should be reflected in the GCC+Darwin case below
     PGO_PROF_GEN_FLAG="-fprofile-instr-generate"
@@ -8079,24 +8661,25 @@ esac
 
 # BOLT optimization. Always configured after PGO since it always runs after PGO.
 Py_BOLT='false'
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-bolt" >&5
-$as_echo_n "checking for --enable-bolt... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-bolt" >&5
+printf %s "checking for --enable-bolt... " >&6; }
 # Check whether --enable-bolt was given.
-if test "${enable_bolt+set}" = set; then :
+if test ${enable_bolt+y}
+then :
   enableval=$enable_bolt;
 if test "$enableval" != no
 then
   Py_BOLT='true'
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; };
 else
   Py_BOLT='false'
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; };
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; };
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -8106,119 +8689,14 @@ if test "$Py_BOLT" = 'true' ; then
   DEF_MAKE_ALL_RULE="bolt-opt"
   DEF_MAKE_RULE="build_all"
 
-
-  if test -n "$ac_tool_prefix"; then
-  for ac_prog in readelf
-  do
-    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
-set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_READELF+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$READELF"; then
-  ac_cv_prog_READELF="$READELF" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_READELF="$ac_tool_prefix$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi
-fi
-READELF=$ac_cv_prog_READELF
-if test -n "$READELF"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $READELF" >&5
-$as_echo "$READELF" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-    test -n "$READELF" && break
-  done
-fi
-if test -z "$READELF"; then
-  ac_ct_READELF=$READELF
-  for ac_prog in readelf
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_READELF+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$ac_ct_READELF"; then
-  ac_cv_prog_ac_ct_READELF="$ac_ct_READELF" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_ac_ct_READELF="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_READELF=$ac_cv_prog_ac_ct_READELF
-if test -n "$ac_ct_READELF"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_READELF" >&5
-$as_echo "$ac_ct_READELF" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  test -n "$ac_ct_READELF" && break
-done
-
-  if test "x$ac_ct_READELF" = x; then
-    READELF=""notfound""
-  else
-    case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
-    READELF=$ac_ct_READELF
-  fi
-fi
-
-  if test "$READELF" == "notfound"
-  then
-    as_fn_error $? "readelf is required for a --enable-bolt build but could not be found." "$LINENO" 5
-  fi
-
   # -fno-reorder-blocks-and-partition is required for bolt to work.
   # Possibly GCC only.
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fno-reorder-blocks-and-partition" >&5
-$as_echo_n "checking whether C compiler accepts -fno-reorder-blocks-and-partition... " >&6; }
-if ${ax_cv_check_cflags___fno_reorder_blocks_and_partition+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fno-reorder-blocks-and-partition" >&5
+printf %s "checking whether C compiler accepts -fno-reorder-blocks-and-partition... " >&6; }
+if test ${ax_cv_check_cflags___fno_reorder_blocks_and_partition+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   ax_check_save_flags=$CFLAGS
   CFLAGS="$CFLAGS  -fno-reorder-blocks-and-partition"
@@ -8226,28 +8704,30 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ax_cv_check_cflags___fno_reorder_blocks_and_partition=yes
-else
+else $as_nop
   ax_cv_check_cflags___fno_reorder_blocks_and_partition=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$ax_check_save_flags
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fno_reorder_blocks_and_partition" >&5
-$as_echo "$ax_cv_check_cflags___fno_reorder_blocks_and_partition" >&6; }
-if test "x$ax_cv_check_cflags___fno_reorder_blocks_and_partition" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fno_reorder_blocks_and_partition" >&5
+printf "%s\n" "$ax_cv_check_cflags___fno_reorder_blocks_and_partition" >&6; }
+if test "x$ax_cv_check_cflags___fno_reorder_blocks_and_partition" = xyes
+then :
 
       CFLAGS_NODIST="$CFLAGS_NODIST -fno-reorder-blocks-and-partition"
 
-else
+else $as_nop
   :
 fi
 
@@ -8263,11 +8743,12 @@ fi
   if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}llvm-bolt", so it can be a program name with args.
 set dummy ${ac_tool_prefix}llvm-bolt; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_LLVM_BOLT+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_LLVM_BOLT+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $LLVM_BOLT in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_LLVM_BOLT="$LLVM_BOLT" # Let the user override the test with a path.
@@ -8277,11 +8758,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_LLVM_BOLT="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_LLVM_BOLT="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -8293,11 +8778,11 @@ esac
 fi
 LLVM_BOLT=$ac_cv_path_LLVM_BOLT
 if test -n "$LLVM_BOLT"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LLVM_BOLT" >&5
-$as_echo "$LLVM_BOLT" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LLVM_BOLT" >&5
+printf "%s\n" "$LLVM_BOLT" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -8306,11 +8791,12 @@ if test -z "$ac_cv_path_LLVM_BOLT"; then
   ac_pt_LLVM_BOLT=$LLVM_BOLT
   # Extract the first word of "llvm-bolt", so it can be a program name with args.
 set dummy llvm-bolt; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_LLVM_BOLT+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_LLVM_BOLT+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_LLVM_BOLT in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_LLVM_BOLT="$ac_pt_LLVM_BOLT" # Let the user override the test with a path.
@@ -8320,11 +8806,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_LLVM_BOLT="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_LLVM_BOLT="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -8336,11 +8826,11 @@ esac
 fi
 ac_pt_LLVM_BOLT=$ac_cv_path_ac_pt_LLVM_BOLT
 if test -n "$ac_pt_LLVM_BOLT"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_LLVM_BOLT" >&5
-$as_echo "$ac_pt_LLVM_BOLT" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_LLVM_BOLT" >&5
+printf "%s\n" "$ac_pt_LLVM_BOLT" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_LLVM_BOLT" = x; then
@@ -8348,8 +8838,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     LLVM_BOLT=$ac_pt_LLVM_BOLT
@@ -8360,8 +8850,8 @@ fi
 
   if test -n "${LLVM_BOLT}" -a -x "${LLVM_BOLT}"
   then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: \"Found llvm-bolt\"" >&5
-$as_echo "\"Found llvm-bolt\"" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: \"Found llvm-bolt\"" >&5
+printf "%s\n" "\"Found llvm-bolt\"" >&6; }
   else
     as_fn_error $? "llvm-bolt is required for a --enable-bolt build but could not be found." "$LINENO" 5
   fi
@@ -8370,11 +8860,12 @@ $as_echo "\"Found llvm-bolt\"" >&6; }
   if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}merge-fdata", so it can be a program name with args.
 set dummy ${ac_tool_prefix}merge-fdata; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_MERGE_FDATA+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_MERGE_FDATA+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $MERGE_FDATA in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_MERGE_FDATA="$MERGE_FDATA" # Let the user override the test with a path.
@@ -8384,11 +8875,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_MERGE_FDATA="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_MERGE_FDATA="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -8400,11 +8895,11 @@ esac
 fi
 MERGE_FDATA=$ac_cv_path_MERGE_FDATA
 if test -n "$MERGE_FDATA"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MERGE_FDATA" >&5
-$as_echo "$MERGE_FDATA" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MERGE_FDATA" >&5
+printf "%s\n" "$MERGE_FDATA" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -8413,11 +8908,12 @@ if test -z "$ac_cv_path_MERGE_FDATA"; then
   ac_pt_MERGE_FDATA=$MERGE_FDATA
   # Extract the first word of "merge-fdata", so it can be a program name with args.
 set dummy merge-fdata; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_MERGE_FDATA+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_ac_pt_MERGE_FDATA+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $ac_pt_MERGE_FDATA in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_ac_pt_MERGE_FDATA="$ac_pt_MERGE_FDATA" # Let the user override the test with a path.
@@ -8427,11 +8923,15 @@ else
 for as_dir in ${llvm_path}
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_ac_pt_MERGE_FDATA="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_ac_pt_MERGE_FDATA="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -8443,11 +8943,11 @@ esac
 fi
 ac_pt_MERGE_FDATA=$ac_cv_path_ac_pt_MERGE_FDATA
 if test -n "$ac_pt_MERGE_FDATA"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_MERGE_FDATA" >&5
-$as_echo "$ac_pt_MERGE_FDATA" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_MERGE_FDATA" >&5
+printf "%s\n" "$ac_pt_MERGE_FDATA" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_pt_MERGE_FDATA" = x; then
@@ -8455,8 +8955,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     MERGE_FDATA=$ac_pt_MERGE_FDATA
@@ -8467,13 +8967,43 @@ fi
 
   if test -n "${MERGE_FDATA}" -a -x "${MERGE_FDATA}"
   then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: \"Found merge-fdata\"" >&5
-$as_echo "\"Found merge-fdata\"" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: \"Found merge-fdata\"" >&5
+printf "%s\n" "\"Found merge-fdata\"" >&6; }
   else
     as_fn_error $? "merge-fdata is required for a --enable-bolt build but could not be found." "$LINENO" 5
   fi
 fi
 
+
+BOLT_BINARIES='$(BUILDPYTHON)'
+if test "x$enable_shared" = xyes
+then :
+
+  BOLT_BINARIES="${BOLT_BINARIES} \$(INSTSONAME)"
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking BOLT_INSTRUMENT_FLAGS" >&5
+printf %s "checking BOLT_INSTRUMENT_FLAGS... " >&6; }
+if test -z "${BOLT_INSTRUMENT_FLAGS}"
+then
+  BOLT_INSTRUMENT_FLAGS=
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $BOLT_INSTRUMENT_FLAGS" >&5
+printf "%s\n" "$BOLT_INSTRUMENT_FLAGS" >&6; }
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking BOLT_APPLY_FLAGS" >&5
+printf %s "checking BOLT_APPLY_FLAGS... " >&6; }
+if test -z "${BOLT_APPLY_FLAGS}"
+then
+  BOLT_APPLY_FLAGS=" -update-debug-sections -reorder-blocks=ext-tsp -reorder-functions=hfsort+ -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot "
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $BOLT_APPLY_FLAGS" >&5
+printf "%s\n" "$BOLT_APPLY_FLAGS" >&6; }
+
 # XXX Shouldn't the code above that fiddles with BASECFLAGS and OPT be
 # merged with this chunk of code?
 
@@ -8502,76 +9032,82 @@ esac
 
 save_CFLAGS=$CFLAGS
 CFLAGS="-fstrict-overflow -fno-strict-overflow"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC supports -fstrict-overflow and -fno-strict-overflow" >&5
-$as_echo_n "checking if $CC supports -fstrict-overflow and -fno-strict-overflow... " >&6; }
-if ${ac_cv_cc_supports_fstrict_overflow+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $CC supports -fstrict-overflow and -fno-strict-overflow" >&5
+printf %s "checking if $CC supports -fstrict-overflow and -fno-strict-overflow... " >&6; }
+if test ${ac_cv_cc_supports_fstrict_overflow+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_cc_supports_fstrict_overflow=yes
-else
+else $as_nop
   ac_cv_cc_supports_fstrict_overflow=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_supports_fstrict_overflow" >&5
-$as_echo "$ac_cv_cc_supports_fstrict_overflow" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_supports_fstrict_overflow" >&5
+printf "%s\n" "$ac_cv_cc_supports_fstrict_overflow" >&6; }
 CFLAGS=$save_CFLAGS
 
-if test "x$ac_cv_cc_supports_fstrict_overflow" = xyes; then :
+if test "x$ac_cv_cc_supports_fstrict_overflow" = xyes
+then :
   STRICT_OVERFLOW_CFLAGS="-fstrict-overflow"
            NO_STRICT_OVERFLOW_CFLAGS="-fno-strict-overflow"
-else
+else $as_nop
   STRICT_OVERFLOW_CFLAGS=""
            NO_STRICT_OVERFLOW_CFLAGS=""
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-strict-overflow" >&5
-$as_echo_n "checking for --with-strict-overflow... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-strict-overflow" >&5
+printf %s "checking for --with-strict-overflow... " >&6; }
 
 # Check whether --with-strict-overflow was given.
-if test "${with_strict_overflow+set}" = set; then :
+if test ${with_strict_overflow+y}
+then :
   withval=$with_strict_overflow;
-    if test "x$ac_cv_cc_supports_fstrict_overflow" = xno; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --with-strict-overflow=yes requires a compiler that supports -fstrict-overflow" >&5
-$as_echo "$as_me: WARNING: --with-strict-overflow=yes requires a compiler that supports -fstrict-overflow" >&2;}
+    if test "x$ac_cv_cc_supports_fstrict_overflow" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: --with-strict-overflow=yes requires a compiler that supports -fstrict-overflow" >&5
+printf "%s\n" "$as_me: WARNING: --with-strict-overflow=yes requires a compiler that supports -fstrict-overflow" >&2;}
 fi
 
-else
+else $as_nop
   with_strict_overflow=no
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_strict_overflow" >&5
-$as_echo "$with_strict_overflow" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_strict_overflow" >&5
+printf "%s\n" "$with_strict_overflow" >&6; }
 
 # Check if CC supports -Og optimization level
 save_CFLAGS=$CFLAGS
 CFLAGS="-Og"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC supports -Og optimization level" >&5
-$as_echo_n "checking if $CC supports -Og optimization level... " >&6; }
-if ${ac_cv_cc_supports_og+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $CC supports -Og optimization level" >&5
+printf %s "checking if $CC supports -Og optimization level... " >&6; }
+if test ${ac_cv_cc_supports_og+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
 int
-main ()
+main (void)
 {
 
   ;
@@ -8579,26 +9115,28 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
       ac_cv_cc_supports_og=yes
 
-else
+else $as_nop
 
       ac_cv_cc_supports_og=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_supports_og" >&5
-$as_echo "$ac_cv_cc_supports_og" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cc_supports_og" >&5
+printf "%s\n" "$ac_cv_cc_supports_og" >&6; }
 CFLAGS=$save_CFLAGS
 
 # Optimization messes up debuggers, so turn it off for
 # debug builds.
 PYDEBUG_CFLAGS="-O0"
-if test "x$ac_cv_cc_supports_og" = xyes; then :
+if test "x$ac_cv_cc_supports_og" = xyes
+then :
   PYDEBUG_CFLAGS="-Og"
 fi
 
@@ -8646,9 +9184,10 @@ fi
 case $ac_sys_system in #(
   Emscripten) :
 
-            if test "x$Py_DEBUG" = xyes; then :
+            if test "x$Py_DEBUG" = xyes
+then :
   wasm_debug=yes
-else
+else $as_nop
   wasm_debug=no
 fi
 
@@ -8658,13 +9197,15 @@ fi
 
         as_fn_append LDFLAGS_NODIST " -sFORCE_FILESYSTEM -lidbfs.js -lnodefs.js -lproxyfs.js -lworkerfs.js"
 
-    if test "x$enable_wasm_dynamic_linking" = xyes; then :
+    if test "x$enable_wasm_dynamic_linking" = xyes
+then :
 
       as_fn_append LINKFORSHARED " -sMAIN_MODULE"
 
 fi
 
-    if test "x$enable_wasm_pthreads" = xyes; then :
+    if test "x$enable_wasm_pthreads" = xyes
+then :
 
       as_fn_append CFLAGS_NODIST " -pthread"
       as_fn_append LDFLAGS_NODIST " -sUSE_PTHREADS"
@@ -8675,7 +9216,8 @@ fi
     case $ac_sys_emscripten_target in #(
   browser*) :
 
-        if test "x$ac_sys_emscripten_target" = xbrowser-debug; then :
+        if test "x$ac_sys_emscripten_target" = xbrowser-debug
+then :
   wasm_debug=yes
 fi
         as_fn_append LINKFORSHARED " --preload-file=\$(WASM_ASSETS_DIR)"
@@ -8685,7 +9227,8 @@ fi
        ;; #(
   node*) :
 
-        if test "x$ac_sys_emscripten_target" = xnode-debug; then :
+        if test "x$ac_sys_emscripten_target" = xnode-debug
+then :
   wasm_debug=yes
 fi
         as_fn_append LDFLAGS_NODIST " -sALLOW_MEMORY_GROWTH -sNODERAWFS"
@@ -8697,12 +9240,13 @@ fi
      ;;
 esac
 
-    if test "x$wasm_debug" = xyes; then :
+    if test "x$wasm_debug" = xyes
+then :
 
       as_fn_append LDFLAGS_NODIST " -sASSERTIONS"
       as_fn_append LINKFORSHARED " $WASM_LINKFORSHARED_DEBUG"
 
-else
+else $as_nop
 
       as_fn_append LINKFORSHARED " -O2 -g0"
 
@@ -8711,17 +9255,37 @@ fi
   WASI) :
 
 
-$as_echo "#define _WASI_EMULATED_SIGNAL 1" >>confdefs.h
+printf "%s\n" "#define _WASI_EMULATED_SIGNAL 1" >>confdefs.h
 
 
-$as_echo "#define _WASI_EMULATED_GETPID 1" >>confdefs.h
+printf "%s\n" "#define _WASI_EMULATED_GETPID 1" >>confdefs.h
 
 
-$as_echo "#define _WASI_EMULATED_PROCESS_CLOCKS 1" >>confdefs.h
+printf "%s\n" "#define _WASI_EMULATED_PROCESS_CLOCKS 1" >>confdefs.h
 
     LIBS="$LIBS -lwasi-emulated-signal -lwasi-emulated-getpid -lwasi-emulated-process-clocks"
     echo "#define _WASI_EMULATED_SIGNAL 1" >> confdefs.h
 
+    if test "x$enable_wasm_pthreads" = xyes
+then :
+
+      # Note: update CFLAGS because ac_compile/ac_link needs this too.
+      # without this, configure fails to find pthread_create, sem_init,
+      # etc because they are only available in the sysroot for
+      # wasm32-wasi-threads.
+      # Note: wasi-threads requires --import-memory.
+      # Note: wasi requires --export-memory.
+      # Note: --export-memory is implicit unless --import-memory is given
+      # Note: this requires LLVM >= 16.
+      as_fn_append CFLAGS " -target wasm32-wasi-threads -pthread"
+      as_fn_append CFLAGS_NODIST " -target wasm32-wasi-threads -pthread"
+      as_fn_append LDFLAGS_NODIST " -target wasm32-wasi-threads -pthread"
+      as_fn_append LDFLAGS_NODIST " -Wl,--import-memory"
+      as_fn_append LDFLAGS_NODIST " -Wl,--export-memory"
+      as_fn_append LDFLAGS_NODIST " -Wl,--max-memory=10485760"
+
+fi
+
             as_fn_append LDFLAGS_NODIST " -z stack-size=524288 -Wl,--stack-first -Wl,--initial-memory=10485760"
 
  ;; #(
@@ -8755,9 +9319,10 @@ UNIVERSAL_ARCH_FLAGS=
 
 
 # tweak BASECFLAGS based on compiler and platform
-if test "x$with_strict_overflow" = xyes; then :
+if test "x$with_strict_overflow" = xyes
+then :
   BASECFLAGS="$BASECFLAGS $STRICT_OVERFLOW_CFLAGS"
-else
+else $as_nop
   BASECFLAGS="$BASECFLAGS $NO_STRICT_OVERFLOW_CFLAGS"
 fi
 
@@ -8767,11 +9332,12 @@ yes)
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can add -Wextra" >&5
-$as_echo_n "checking if we can add -Wextra... " >&6; }
-if ${ac_cv_enable_extra_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can add -Wextra" >&5
+printf %s "checking if we can add -Wextra... " >&6; }
+if test ${ac_cv_enable_extra_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wextra -Werror"
@@ -8779,27 +9345,29 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_enable_extra_warning=yes
-else
+else $as_nop
   ac_cv_enable_extra_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_extra_warning" >&5
-$as_echo "$ac_cv_enable_extra_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_extra_warning" >&5
+printf "%s\n" "$ac_cv_enable_extra_warning" >&6; }
 
 
-    if test "x$ac_cv_enable_extra_warning" = xyes; then :
+    if test "x$ac_cv_enable_extra_warning" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -Wextra"
 fi
 
@@ -8810,17 +9378,18 @@ fi
      ac_save_cc="$CC"
      CC="$CC -fno-strict-aliasing"
      save_CFLAGS="$CFLAGS"
-     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts and needs -fno-strict-aliasing" >&5
-$as_echo_n "checking whether $CC accepts and needs -fno-strict-aliasing... " >&6; }
-if ${ac_cv_no_strict_aliasing+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts and needs -fno-strict-aliasing" >&5
+printf %s "checking whether $CC accepts and needs -fno-strict-aliasing... " >&6; }
+if test ${ac_cv_no_strict_aliasing+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
 int
-main ()
+main (void)
 {
 
   ;
@@ -8828,7 +9397,8 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
 	   CC="$ac_save_cc -fstrict-aliasing"
            CFLAGS="$CFLAGS -Werror -Wstrict-aliasing"
@@ -8837,7 +9407,7 @@ if ac_fn_c_try_compile "$LINENO"; then :
 
 	       void f(int **x) {}
 int
-main ()
+main (void)
 {
 double *x; f((int **) &x);
   ;
@@ -8845,44 +9415,47 @@ double *x; f((int **) &x);
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
 	       ac_cv_no_strict_aliasing=no
 
-else
+else $as_nop
 
                ac_cv_no_strict_aliasing=yes
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
-else
+else $as_nop
 
 	   ac_cv_no_strict_aliasing=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_no_strict_aliasing" >&5
-$as_echo "$ac_cv_no_strict_aliasing" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_no_strict_aliasing" >&5
+printf "%s\n" "$ac_cv_no_strict_aliasing" >&6; }
      CFLAGS="$save_CFLAGS"
      CC="$ac_save_cc"
-    if test "x$ac_cv_no_strict_aliasing" = xyes; then :
+    if test "x$ac_cv_no_strict_aliasing" = xyes
+then :
   BASECFLAGS="$BASECFLAGS -fno-strict-aliasing"
 fi
 
     # ICC doesn't recognize the option, but only emits a warning
     ## XXX does it emit an unused result warning and can it be disabled?
-    case $CC in #(
+    case "$CC_BASENAME" in #(
   *icc*) :
     ac_cv_disable_unused_result_warning=no
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC unused-result warning" >&5
-$as_echo_n "checking if we can disable $CC unused-result warning... " >&6; }
-if ${ac_cv_disable_unused_result_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC unused-result warning" >&5
+printf %s "checking if we can disable $CC unused-result warning... " >&6; }
+if test ${ac_cv_disable_unused_result_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wunused-result -Werror"
@@ -8890,41 +9463,44 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_disable_unused_result_warning=yes
-else
+else $as_nop
   ac_cv_disable_unused_result_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_unused_result_warning" >&5
-$as_echo "$ac_cv_disable_unused_result_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_unused_result_warning" >&5
+printf "%s\n" "$ac_cv_disable_unused_result_warning" >&6; }
 
  ;; #(
   *) :
      ;;
 esac
-    if test "x$ac_cv_disable_unused_result_warning" = xyes; then :
+    if test "x$ac_cv_disable_unused_result_warning" = xyes
+then :
   BASECFLAGS="$BASECFLAGS -Wno-unused-result"
                CFLAGS_NODIST="$CFLAGS_NODIST -Wno-unused-result"
 fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC unused-parameter warning" >&5
-$as_echo_n "checking if we can disable $CC unused-parameter warning... " >&6; }
-if ${ac_cv_disable_unused_parameter_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC unused-parameter warning" >&5
+printf %s "checking if we can disable $CC unused-parameter warning... " >&6; }
+if test ${ac_cv_disable_unused_parameter_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wunused-parameter -Werror"
@@ -8932,37 +9508,40 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_disable_unused_parameter_warning=yes
-else
+else $as_nop
   ac_cv_disable_unused_parameter_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_unused_parameter_warning" >&5
-$as_echo "$ac_cv_disable_unused_parameter_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_unused_parameter_warning" >&5
+printf "%s\n" "$ac_cv_disable_unused_parameter_warning" >&6; }
 
 
-    if test "x$ac_cv_disable_unused_parameter_warning" = xyes; then :
+    if test "x$ac_cv_disable_unused_parameter_warning" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -Wno-unused-parameter"
 fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC int-conversion warning" >&5
-$as_echo_n "checking if we can disable $CC int-conversion warning... " >&6; }
-if ${ac_cv_disable_int_conversion_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC int-conversion warning" >&5
+printf %s "checking if we can disable $CC int-conversion warning... " >&6; }
+if test ${ac_cv_disable_int_conversion_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wint-conversion -Werror"
@@ -8970,37 +9549,40 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_disable_int_conversion_warning=yes
-else
+else $as_nop
   ac_cv_disable_int_conversion_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_int_conversion_warning" >&5
-$as_echo "$ac_cv_disable_int_conversion_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_int_conversion_warning" >&5
+printf "%s\n" "$ac_cv_disable_int_conversion_warning" >&6; }
 
 
-    if test "x$ac_cv_disable_int_conversion" = xyes; then :
+    if test "x$ac_cv_disable_int_conversion" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -Wno-int-conversion"
 fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC missing-field-initializers warning" >&5
-$as_echo_n "checking if we can disable $CC missing-field-initializers warning... " >&6; }
-if ${ac_cv_disable_missing_field_initializers_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can disable $CC missing-field-initializers warning" >&5
+printf %s "checking if we can disable $CC missing-field-initializers warning... " >&6; }
+if test ${ac_cv_disable_missing_field_initializers_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wmissing-field-initializers -Werror"
@@ -9008,37 +9590,40 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_disable_missing_field_initializers_warning=yes
-else
+else $as_nop
   ac_cv_disable_missing_field_initializers_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_missing_field_initializers_warning" >&5
-$as_echo "$ac_cv_disable_missing_field_initializers_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_disable_missing_field_initializers_warning" >&5
+printf "%s\n" "$ac_cv_disable_missing_field_initializers_warning" >&6; }
 
 
-    if test "x$ac_cv_disable_missing_field_initializers_warning" = xyes; then :
+    if test "x$ac_cv_disable_missing_field_initializers_warning" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -Wno-missing-field-initializers"
 fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can enable $CC sign-compare warning" >&5
-$as_echo_n "checking if we can enable $CC sign-compare warning... " >&6; }
-if ${ac_cv_enable_sign_compare_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can enable $CC sign-compare warning" >&5
+printf %s "checking if we can enable $CC sign-compare warning... " >&6; }
+if test ${ac_cv_enable_sign_compare_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wsign-compare -Werror"
@@ -9046,37 +9631,40 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_enable_sign_compare_warning=yes
-else
+else $as_nop
   ac_cv_enable_sign_compare_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_sign_compare_warning" >&5
-$as_echo "$ac_cv_enable_sign_compare_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_sign_compare_warning" >&5
+printf "%s\n" "$ac_cv_enable_sign_compare_warning" >&6; }
 
 
-    if test "x$ac_cv_enable_sign_compare_warning" = xyes; then :
+    if test "x$ac_cv_enable_sign_compare_warning" = xyes
+then :
   BASECFLAGS="$BASECFLAGS -Wsign-compare"
 fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can enable $CC unreachable-code warning" >&5
-$as_echo_n "checking if we can enable $CC unreachable-code warning... " >&6; }
-if ${ac_cv_enable_unreachable_code_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can enable $CC unreachable-code warning" >&5
+printf %s "checking if we can enable $CC unreachable-code warning... " >&6; }
+if test ${ac_cv_enable_unreachable_code_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wunreachable-code -Werror"
@@ -9084,24 +9672,25 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_enable_unreachable_code_warning=yes
-else
+else $as_nop
   ac_cv_enable_unreachable_code_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_unreachable_code_warning" >&5
-$as_echo "$ac_cv_enable_unreachable_code_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_unreachable_code_warning" >&5
+printf "%s\n" "$ac_cv_enable_unreachable_code_warning" >&6; }
 
 
     # Don't enable unreachable code warning in debug mode, since it usually
@@ -9122,11 +9711,12 @@ $as_echo "$ac_cv_enable_unreachable_code_warning" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can enable $CC strict-prototypes warning" >&5
-$as_echo_n "checking if we can enable $CC strict-prototypes warning... " >&6; }
-if ${ac_cv_enable_strict_prototypes_warning+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can enable $CC strict-prototypes warning" >&5
+printf %s "checking if we can enable $CC strict-prototypes warning... " >&6; }
+if test ${ac_cv_enable_strict_prototypes_warning+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     py_cflags=$CFLAGS
     as_fn_append CFLAGS "-Wstrict-prototypes -Werror"
@@ -9134,43 +9724,46 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_enable_strict_prototypes_warning=yes
-else
+else $as_nop
   ac_cv_enable_strict_prototypes_warning=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     CFLAGS=$py_cflags
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_strict_prototypes_warning" >&5
-$as_echo "$ac_cv_enable_strict_prototypes_warning" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_strict_prototypes_warning" >&5
+printf "%s\n" "$ac_cv_enable_strict_prototypes_warning" >&6; }
 
 
-    if test "x$ac_cv_enable_strict_prototypes_warning" = xyes; then :
+    if test "x$ac_cv_enable_strict_prototypes_warning" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -Wstrict-prototypes"
 fi
 
      ac_save_cc="$CC"
      CC="$CC -Werror=implicit-function-declaration"
-     { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can make implicit function declaration an error in $CC" >&5
-$as_echo_n "checking if we can make implicit function declaration an error in $CC... " >&6; }
-if ${ac_cv_enable_implicit_function_declaration_error+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can make implicit function declaration an error in $CC" >&5
+printf %s "checking if we can make implicit function declaration an error in $CC... " >&6; }
+if test ${ac_cv_enable_implicit_function_declaration_error+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
 int
-main ()
+main (void)
 {
 
   ;
@@ -9178,38 +9771,41 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
            ac_cv_enable_implicit_function_declaration_error=yes
 
-else
+else $as_nop
 
            ac_cv_enable_implicit_function_declaration_error=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_implicit_function_declaration_error" >&5
-$as_echo "$ac_cv_enable_implicit_function_declaration_error" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_implicit_function_declaration_error" >&5
+printf "%s\n" "$ac_cv_enable_implicit_function_declaration_error" >&6; }
      CC="$ac_save_cc"
 
-    if test "x$ac_cv_enable_implicit_function_declaration_error" = xyes; then :
+    if test "x$ac_cv_enable_implicit_function_declaration_error" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -Werror=implicit-function-declaration"
 fi
 
      ac_save_cc="$CC"
      CC="$CC -fvisibility=hidden"
-     { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can use visibility in $CC" >&5
-$as_echo_n "checking if we can use visibility in $CC... " >&6; }
-if ${ac_cv_enable_visibility+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can use visibility in $CC" >&5
+printf %s "checking if we can use visibility in $CC... " >&6; }
+if test ${ac_cv_enable_visibility+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
 int
-main ()
+main (void)
 {
 
   ;
@@ -9217,22 +9813,24 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
            ac_cv_enable_visibility=yes
 
-else
+else $as_nop
 
            ac_cv_enable_visibility=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_visibility" >&5
-$as_echo "$ac_cv_enable_visibility" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_visibility" >&5
+printf "%s\n" "$ac_cv_enable_visibility" >&6; }
      CC="$ac_save_cc"
 
-    if test "x$ac_cv_enable_visibility" = xyes; then :
+    if test "x$ac_cv_enable_visibility" = xyes
+then :
   CFLAGS_NODIST="$CFLAGS_NODIST -fvisibility=hidden"
 fi
 
@@ -9255,8 +9853,8 @@ fi
         # used to be here, but non-Apple gcc doesn't accept them.
         if test "${CC}" = gcc
         then
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking which compiler should be used" >&5
-$as_echo_n "checking which compiler should be used... " >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking which compiler should be used" >&5
+printf %s "checking which compiler should be used... " >&6; }
             case "${UNIVERSALSDK}" in
             */MacOSX10.4u.sdk)
                 # Build using 10.4 SDK, force usage of gcc when the
@@ -9266,8 +9864,8 @@ $as_echo_n "checking which compiler should be used... " >&6; }
                 CPP=cpp-4.0
                 ;;
             esac
-            { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
         fi
 
         LIPO_INTEL64_FLAGS=""
@@ -9344,8 +9942,8 @@ $as_echo "$CC" >&6; }
         #       below to pick either 10.3, 10.4, or 10.5 as the target.
         # 4. If we are running on OS X 10.2 or earlier, good luck!
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking which MACOSX_DEPLOYMENT_TARGET to use" >&5
-$as_echo_n "checking which MACOSX_DEPLOYMENT_TARGET to use... " >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking which MACOSX_DEPLOYMENT_TARGET to use" >&5
+printf %s "checking which MACOSX_DEPLOYMENT_TARGET to use... " >&6; }
         cur_target_major=`sw_vers -productVersion | \
                 sed 's/\([0-9]*\)\.\([0-9]*\).*/\1/'`
         cur_target_minor=`sw_vers -productVersion | \
@@ -9382,32 +9980,33 @@ $as_echo_n "checking which MACOSX_DEPLOYMENT_TARGET to use... " >&6; }
         MACOSX_DEPLOYMENT_TARGET="$CONFIGURE_MACOSX_DEPLOYMENT_TARGET"
         export MACOSX_DEPLOYMENT_TARGET
         EXPORT_MACOSX_DEPLOYMENT_TARGET=''
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MACOSX_DEPLOYMENT_TARGET" >&5
-$as_echo "$MACOSX_DEPLOYMENT_TARGET" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MACOSX_DEPLOYMENT_TARGET" >&5
+printf "%s\n" "$MACOSX_DEPLOYMENT_TARGET" >&6; }
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking if specified universal architectures work" >&5
-$as_echo_n "checking if specified universal architectures work... " >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if specified universal architectures work" >&5
+printf %s "checking if specified universal architectures work... " >&6; }
         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdio.h>
 int
-main ()
+main (void)
 {
 printf("%d", 42);
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+if ac_fn_c_try_link "$LINENO"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
              as_fn_error $? "check config.log and use the '--with-universal-archs' option" "$LINENO" 5
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
         # end of Darwin* tests
@@ -9427,7 +10026,10 @@ rm -f core conftest.err conftest.$ac_objext \
     ;;
 esac
 
-case "$CC" in
+case "$CC_BASENAME" in
+*mpicc*)
+    CFLAGS_NODIST="$CFLAGS_NODIST"
+    ;;
 *icc*)
     # ICC needs -fp-model strict or floats behave badly
     CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict"
@@ -9453,14 +10055,16 @@ fi
 # complain if unaccepted options are passed (e.g. gcc on Mac OS X).
 # So we have to see first whether pthreads are available without
 # options before we can check whether -Kpthread improves anything.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthreads are available without options" >&5
-$as_echo_n "checking whether pthreads are available without options... " >&6; }
-if ${ac_cv_pthread_is_default+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthreads are available without options" >&5
+printf %s "checking whether pthreads are available without options... " >&6; }
+if test ${ac_cv_pthread_is_default+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_pthread_is_default=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9478,13 +10082,14 @@ int main(void){
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
 
   ac_cv_pthread_is_default=yes
   ac_cv_kthread=no
   ac_cv_pthread=no
 
-else
+else $as_nop
   ac_cv_pthread_is_default=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -9493,8 +10098,8 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread_is_default" >&5
-$as_echo "$ac_cv_pthread_is_default" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread_is_default" >&5
+printf "%s\n" "$ac_cv_pthread_is_default" >&6; }
 
 
 if test $ac_cv_pthread_is_default = yes
@@ -9506,16 +10111,18 @@ else
 # Some compilers won't report that they do not support -Kpthread,
 # so we need to run a program to see whether it really made the
 # function available.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -Kpthread" >&5
-$as_echo_n "checking whether $CC accepts -Kpthread... " >&6; }
-if ${ac_cv_kpthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -Kpthread" >&5
+printf %s "checking whether $CC accepts -Kpthread... " >&6; }
+if test ${ac_cv_kpthread+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_save_cc="$CC"
 CC="$CC -Kpthread"
-if test "$cross_compiling" = yes; then :
+if test "$cross_compiling" = yes
+then :
   ac_cv_kpthread=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9533,9 +10140,10 @@ int main(void){
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_kpthread=yes
-else
+else $as_nop
   ac_cv_kpthread=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -9544,8 +10152,8 @@ fi
 
 CC="$ac_save_cc"
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_kpthread" >&5
-$as_echo "$ac_cv_kpthread" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_kpthread" >&5
+printf "%s\n" "$ac_cv_kpthread" >&6; }
 fi
 
 if test $ac_cv_kpthread = no -a $ac_cv_pthread_is_default = no
@@ -9555,16 +10163,18 @@ then
 # Some compilers won't report that they do not support -Kthread,
 # so we need to run a program to see whether it really made the
 # function available.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -Kthread" >&5
-$as_echo_n "checking whether $CC accepts -Kthread... " >&6; }
-if ${ac_cv_kthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -Kthread" >&5
+printf %s "checking whether $CC accepts -Kthread... " >&6; }
+if test ${ac_cv_kthread+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_save_cc="$CC"
 CC="$CC -Kthread"
-if test "$cross_compiling" = yes; then :
+if test "$cross_compiling" = yes
+then :
   ac_cv_kthread=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9582,9 +10192,10 @@ int main(void){
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_kthread=yes
-else
+else $as_nop
   ac_cv_kthread=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -9593,8 +10204,8 @@ fi
 
 CC="$ac_save_cc"
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_kthread" >&5
-$as_echo "$ac_cv_kthread" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_kthread" >&5
+printf "%s\n" "$ac_cv_kthread" >&6; }
 fi
 
 if test $ac_cv_kthread = no -a $ac_cv_pthread_is_default = no
@@ -9604,16 +10215,18 @@ then
 # Some compilers won't report that they do not support -pthread,
 # so we need to run a program to see whether it really made the
 # function available.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -pthread" >&5
-$as_echo_n "checking whether $CC accepts -pthread... " >&6; }
-if ${ac_cv_pthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -pthread" >&5
+printf %s "checking whether $CC accepts -pthread... " >&6; }
+if test ${ac_cv_pthread+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_save_cc="$CC"
 CC="$CC -pthread"
-if test "$cross_compiling" = yes; then :
+if test "$cross_compiling" = yes
+then :
   ac_cv_pthread=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9631,9 +10244,10 @@ int main(void){
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_pthread=yes
-else
+else $as_nop
   ac_cv_pthread=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -9642,19 +10256,20 @@ fi
 
 CC="$ac_save_cc"
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread" >&5
-$as_echo "$ac_cv_pthread" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread" >&5
+printf "%s\n" "$ac_cv_pthread" >&6; }
 fi
 
 # If we have set a CC compiler flag for thread support then
 # check if it works for CXX, too.
 if test ! -z "$CXX"
 then
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX also accepts flags for thread support" >&5
-$as_echo_n "checking whether $CXX also accepts flags for thread support... " >&6; }
-if ${ac_cv_cxx_thread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CXX also accepts flags for thread support" >&5
+printf %s "checking whether $CXX also accepts flags for thread support... " >&6; }
+if test ${ac_cv_cxx_thread+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_save_cxx="$CXX"
 
 if test "$ac_cv_kpthread" = "yes"
@@ -9688,58 +10303,527 @@ then
 fi
 CXX="$ac_save_cxx"
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_thread" >&5
-$as_echo "$ac_cv_cxx_thread" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_thread" >&5
+printf "%s\n" "$ac_cv_cxx_thread" >&6; }
 else
   ac_cv_cxx_thread=no
 fi
 
 
 
-$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
 
 
 # checks for header files
-for ac_header in  \
-  alloca.h asm/types.h bluetooth.h conio.h crypt.h direct.h dlfcn.h endian.h errno.h fcntl.h grp.h \
-  ieeefp.h io.h langinfo.h libintl.h libutil.h linux/auxvec.h sys/auxv.h linux/fs.h linux/memfd.h \
-  linux/random.h linux/soundcard.h \
-  linux/tipc.h linux/wait.h netdb.h net/ethernet.h netinet/in.h netpacket/packet.h poll.h process.h pthread.h pty.h \
-  sched.h setjmp.h shadow.h signal.h spawn.h stropts.h sys/audioio.h sys/bsdtty.h sys/devpoll.h \
-  sys/endian.h sys/epoll.h sys/event.h sys/eventfd.h sys/file.h sys/ioctl.h sys/kern_control.h \
-  sys/loadavg.h sys/lock.h sys/memfd.h sys/mkdev.h sys/mman.h sys/modem.h sys/param.h sys/poll.h \
-  sys/random.h sys/resource.h sys/select.h sys/sendfile.h sys/socket.h sys/soundcard.h sys/stat.h \
-  sys/statvfs.h sys/sys_domain.h sys/syscall.h sys/sysmacros.h sys/termio.h sys/time.h sys/times.h \
-  sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h sys/xattr.h sysexits.h syslog.h \
-  termios.h util.h utime.h utmp.h \
+ac_fn_c_check_header_compile "$LINENO" "alloca.h" "ac_cv_header_alloca_h" "$ac_includes_default"
+if test "x$ac_cv_header_alloca_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_ALLOCA_H 1" >>confdefs.h
 
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
+fi
+ac_fn_c_check_header_compile "$LINENO" "asm/types.h" "ac_cv_header_asm_types_h" "$ac_includes_default"
+if test "x$ac_cv_header_asm_types_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_ASM_TYPES_H 1" >>confdefs.h
 
 fi
+ac_fn_c_check_header_compile "$LINENO" "bluetooth.h" "ac_cv_header_bluetooth_h" "$ac_includes_default"
+if test "x$ac_cv_header_bluetooth_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_BLUETOOTH_H 1" >>confdefs.h
 
-done
+fi
+ac_fn_c_check_header_compile "$LINENO" "conio.h" "ac_cv_header_conio_h" "$ac_includes_default"
+if test "x$ac_cv_header_conio_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_CONIO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "direct.h" "ac_cv_header_direct_h" "$ac_includes_default"
+if test "x$ac_cv_header_direct_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_DIRECT_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default"
+if test "x$ac_cv_header_dlfcn_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_DLFCN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "endian.h" "ac_cv_header_endian_h" "$ac_includes_default"
+if test "x$ac_cv_header_endian_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_ENDIAN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "errno.h" "ac_cv_header_errno_h" "$ac_includes_default"
+if test "x$ac_cv_header_errno_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_ERRNO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "fcntl.h" "ac_cv_header_fcntl_h" "$ac_includes_default"
+if test "x$ac_cv_header_fcntl_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_FCNTL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "grp.h" "ac_cv_header_grp_h" "$ac_includes_default"
+if test "x$ac_cv_header_grp_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_GRP_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "io.h" "ac_cv_header_io_h" "$ac_includes_default"
+if test "x$ac_cv_header_io_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_IO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "langinfo.h" "ac_cv_header_langinfo_h" "$ac_includes_default"
+if test "x$ac_cv_header_langinfo_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LANGINFO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "libintl.h" "ac_cv_header_libintl_h" "$ac_includes_default"
+if test "x$ac_cv_header_libintl_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBINTL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "libutil.h" "ac_cv_header_libutil_h" "$ac_includes_default"
+if test "x$ac_cv_header_libutil_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBUTIL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/auxvec.h" "ac_cv_header_linux_auxvec_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_auxvec_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_AUXVEC_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/auxv.h" "ac_cv_header_sys_auxv_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_auxv_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_AUXV_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/fs.h" "ac_cv_header_linux_fs_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_fs_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_FS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/limits.h" "ac_cv_header_linux_limits_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_limits_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_LIMITS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/memfd.h" "ac_cv_header_linux_memfd_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_memfd_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_MEMFD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/random.h" "ac_cv_header_linux_random_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_random_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_RANDOM_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/soundcard.h" "ac_cv_header_linux_soundcard_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_soundcard_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_SOUNDCARD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/tipc.h" "ac_cv_header_linux_tipc_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_tipc_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_TIPC_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "linux/wait.h" "ac_cv_header_linux_wait_h" "$ac_includes_default"
+if test "x$ac_cv_header_linux_wait_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_WAIT_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "netdb.h" "ac_cv_header_netdb_h" "$ac_includes_default"
+if test "x$ac_cv_header_netdb_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NETDB_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "net/ethernet.h" "ac_cv_header_net_ethernet_h" "$ac_includes_default"
+if test "x$ac_cv_header_net_ethernet_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NET_ETHERNET_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "netinet/in.h" "ac_cv_header_netinet_in_h" "$ac_includes_default"
+if test "x$ac_cv_header_netinet_in_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NETINET_IN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "netpacket/packet.h" "ac_cv_header_netpacket_packet_h" "$ac_includes_default"
+if test "x$ac_cv_header_netpacket_packet_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NETPACKET_PACKET_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "poll.h" "ac_cv_header_poll_h" "$ac_includes_default"
+if test "x$ac_cv_header_poll_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_POLL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "process.h" "ac_cv_header_process_h" "$ac_includes_default"
+if test "x$ac_cv_header_process_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_PROCESS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "pthread.h" "ac_cv_header_pthread_h" "$ac_includes_default"
+if test "x$ac_cv_header_pthread_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "pty.h" "ac_cv_header_pty_h" "$ac_includes_default"
+if test "x$ac_cv_header_pty_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTY_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sched.h" "ac_cv_header_sched_h" "$ac_includes_default"
+if test "x$ac_cv_header_sched_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "setjmp.h" "ac_cv_header_setjmp_h" "$ac_includes_default"
+if test "x$ac_cv_header_setjmp_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETJMP_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "shadow.h" "ac_cv_header_shadow_h" "$ac_includes_default"
+if test "x$ac_cv_header_shadow_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SHADOW_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "signal.h" "ac_cv_header_signal_h" "$ac_includes_default"
+if test "x$ac_cv_header_signal_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGNAL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "spawn.h" "ac_cv_header_spawn_h" "$ac_includes_default"
+if test "x$ac_cv_header_spawn_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SPAWN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "stropts.h" "ac_cv_header_stropts_h" "$ac_includes_default"
+if test "x$ac_cv_header_stropts_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_STROPTS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/audioio.h" "ac_cv_header_sys_audioio_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_audioio_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_AUDIOIO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/bsdtty.h" "ac_cv_header_sys_bsdtty_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_bsdtty_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_BSDTTY_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/devpoll.h" "ac_cv_header_sys_devpoll_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_devpoll_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_DEVPOLL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/endian.h" "ac_cv_header_sys_endian_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_endian_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_ENDIAN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/epoll.h" "ac_cv_header_sys_epoll_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_epoll_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_EPOLL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/event.h" "ac_cv_header_sys_event_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_event_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_EVENT_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/eventfd.h" "ac_cv_header_sys_eventfd_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_eventfd_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_EVENTFD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/file.h" "ac_cv_header_sys_file_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_file_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_FILE_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/ioctl.h" "ac_cv_header_sys_ioctl_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_ioctl_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_IOCTL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/kern_control.h" "ac_cv_header_sys_kern_control_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_kern_control_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_KERN_CONTROL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/loadavg.h" "ac_cv_header_sys_loadavg_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_loadavg_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_LOADAVG_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/lock.h" "ac_cv_header_sys_lock_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_lock_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_LOCK_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/memfd.h" "ac_cv_header_sys_memfd_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_memfd_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_MEMFD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/mkdev.h" "ac_cv_header_sys_mkdev_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_mkdev_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_MKDEV_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/mman.h" "ac_cv_header_sys_mman_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_mman_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_MMAN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/modem.h" "ac_cv_header_sys_modem_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_modem_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_MODEM_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/param.h" "ac_cv_header_sys_param_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_param_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_PARAM_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/poll.h" "ac_cv_header_sys_poll_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_poll_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_POLL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/random.h" "ac_cv_header_sys_random_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_random_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_RANDOM_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/resource.h" "ac_cv_header_sys_resource_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_resource_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_RESOURCE_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/select.h" "ac_cv_header_sys_select_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_select_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SELECT_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/sendfile.h" "ac_cv_header_sys_sendfile_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_sendfile_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SENDFILE_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/socket.h" "ac_cv_header_sys_socket_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_socket_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SOCKET_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/soundcard.h" "ac_cv_header_sys_soundcard_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_soundcard_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SOUNDCARD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/stat.h" "ac_cv_header_sys_stat_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_stat_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_STAT_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/statvfs.h" "ac_cv_header_sys_statvfs_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_statvfs_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_STATVFS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/sys_domain.h" "ac_cv_header_sys_sys_domain_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_sys_domain_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SYS_DOMAIN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/syscall.h" "ac_cv_header_sys_syscall_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_syscall_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SYSCALL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/sysmacros.h" "ac_cv_header_sys_sysmacros_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_sysmacros_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_SYSMACROS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/termio.h" "ac_cv_header_sys_termio_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_termio_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_TERMIO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/time.h" "ac_cv_header_sys_time_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_time_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_TIME_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/times.h" "ac_cv_header_sys_times_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_times_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_TIMES_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/timerfd.h" "ac_cv_header_sys_timerfd_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_timerfd_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_TIMERFD_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/types.h" "ac_cv_header_sys_types_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_types_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_TYPES_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/uio.h" "ac_cv_header_sys_uio_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_uio_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_UIO_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/un.h" "ac_cv_header_sys_un_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_un_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_UN_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/utsname.h" "ac_cv_header_sys_utsname_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_utsname_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_UTSNAME_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/wait.h" "ac_cv_header_sys_wait_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_wait_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_WAIT_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/xattr.h" "ac_cv_header_sys_xattr_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_xattr_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_XATTR_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "sysexits.h" "ac_cv_header_sysexits_h" "$ac_includes_default"
+if test "x$ac_cv_header_sysexits_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYSEXITS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "syslog.h" "ac_cv_header_syslog_h" "$ac_includes_default"
+if test "x$ac_cv_header_syslog_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYSLOG_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "termios.h" "ac_cv_header_termios_h" "$ac_includes_default"
+if test "x$ac_cv_header_termios_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_TERMIOS_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "util.h" "ac_cv_header_util_h" "$ac_includes_default"
+if test "x$ac_cv_header_util_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UTIL_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "utime.h" "ac_cv_header_utime_h" "$ac_includes_default"
+if test "x$ac_cv_header_utime_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UTIME_H 1" >>confdefs.h
+
+fi
+ac_fn_c_check_header_compile "$LINENO" "utmp.h" "ac_cv_header_utmp_h" "$ac_includes_default"
+if test "x$ac_cv_header_utmp_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UTMP_H 1" >>confdefs.h
+
+fi
 
 ac_header_dirent=no
 for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
-  as_ac_Header=`$as_echo "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_hdr that defines DIR" >&5
-$as_echo_n "checking for $ac_hdr that defines DIR... " >&6; }
-if eval \${$as_ac_Header+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  as_ac_Header=`printf "%s\n" "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_hdr that defines DIR" >&5
+printf %s "checking for $ac_hdr that defines DIR... " >&6; }
+if eval test \${$as_ac_Header+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/types.h>
 #include <$ac_hdr>
 
 int
-main ()
+main (void)
 {
 if ((DIR *) 0)
 return 0;
@@ -9747,19 +10831,21 @@ return 0;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   eval "$as_ac_Header=yes"
-else
+else $as_nop
   eval "$as_ac_Header=no"
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 eval ac_res=\$$as_ac_Header
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_Header"\" = x"yes"
+then :
   cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_hdr" | $as_tr_cpp` 1
+#define `printf "%s\n" "HAVE_$ac_hdr" | $as_tr_cpp` 1
 _ACEOF
 
 ac_header_dirent=$ac_hdr; break
@@ -9768,11 +10854,12 @@ fi
 done
 # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
 if test $ac_header_dirent = dirent.h; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
-$as_echo_n "checking for library containing opendir... " >&6; }
-if ${ac_cv_search_opendir+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
+printf %s "checking for library containing opendir... " >&6; }
+if test ${ac_cv_search_opendir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -9780,56 +10867,59 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char opendir ();
 int
-main ()
+main (void)
 {
 return opendir ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' dir; do
+for ac_lib in '' dir
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
+  if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_search_opendir=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_opendir+:} false; then :
+  if test ${ac_cv_search_opendir+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_opendir+:} false; then :
+if test ${ac_cv_search_opendir+y}
+then :
 
-else
+else $as_nop
   ac_cv_search_opendir=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
-$as_echo "$ac_cv_search_opendir" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
+printf "%s\n" "$ac_cv_search_opendir" >&6; }
 ac_res=$ac_cv_search_opendir
-if test "$ac_res" != no; then :
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
 fi
 
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
-$as_echo_n "checking for library containing opendir... " >&6; }
-if ${ac_cv_search_opendir+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
+printf %s "checking for library containing opendir... " >&6; }
+if test ${ac_cv_search_opendir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -9837,100 +10927,72 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char opendir ();
 int
-main ()
+main (void)
 {
 return opendir ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' x; do
+for ac_lib in '' x
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
+  if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_search_opendir=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_opendir+:} false; then :
+  if test ${ac_cv_search_opendir+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_opendir+:} false; then :
+if test ${ac_cv_search_opendir+y}
+then :
 
-else
+else $as_nop
   ac_cv_search_opendir=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
-$as_echo "$ac_cv_search_opendir" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_opendir" >&5
+printf "%s\n" "$ac_cv_search_opendir" >&6; }
 ac_res=$ac_cv_search_opendir
-if test "$ac_res" != no; then :
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
 fi
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether sys/types.h defines makedev" >&5
-$as_echo_n "checking whether sys/types.h defines makedev... " >&6; }
-if ${ac_cv_header_sys_types_h_makedev+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-int
-main ()
-{
-return makedev(0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_header_sys_types_h_makedev=yes
-else
-  ac_cv_header_sys_types_h_makedev=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_sys_types_h_makedev" >&5
-$as_echo "$ac_cv_header_sys_types_h_makedev" >&6; }
 
-if test $ac_cv_header_sys_types_h_makedev = no; then
-ac_fn_c_check_header_mongrel "$LINENO" "sys/mkdev.h" "ac_cv_header_sys_mkdev_h" "$ac_includes_default"
-if test "x$ac_cv_header_sys_mkdev_h" = xyes; then :
+ac_fn_c_check_header_compile "$LINENO" "sys/mkdev.h" "ac_cv_header_sys_mkdev_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_mkdev_h" = xyes
+then :
 
-$as_echo "#define MAJOR_IN_MKDEV 1" >>confdefs.h
+printf "%s\n" "#define MAJOR_IN_MKDEV 1" >>confdefs.h
 
 fi
 
+if test $ac_cv_header_sys_mkdev_h = no; then
+  ac_fn_c_check_header_compile "$LINENO" "sys/sysmacros.h" "ac_cv_header_sys_sysmacros_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_sysmacros_h" = xyes
+then :
 
-
-  if test $ac_cv_header_sys_mkdev_h = no; then
-    ac_fn_c_check_header_mongrel "$LINENO" "sys/sysmacros.h" "ac_cv_header_sys_sysmacros_h" "$ac_includes_default"
-if test "x$ac_cv_header_sys_sysmacros_h" = xyes; then :
-
-$as_echo "#define MAJOR_IN_SYSMACROS 1" >>confdefs.h
+printf "%s\n" "#define MAJOR_IN_SYSMACROS 1" >>confdefs.h
 
 fi
 
-
-  fi
 fi
 
 
@@ -9938,24 +11000,17 @@ fi
 # http://permalink.gmane.org/gmane.linux.bluez.kernel/22294
 SAVE_CFLAGS=$CFLAGS
 CFLAGS="-std=c99 $CFLAGS"
-for ac_header in bluetooth/bluetooth.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "bluetooth/bluetooth.h" "ac_cv_header_bluetooth_bluetooth_h" "$ac_includes_default"
-if test "x$ac_cv_header_bluetooth_bluetooth_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_BLUETOOTH_BLUETOOTH_H 1
-_ACEOF
+ac_fn_c_check_header_compile "$LINENO" "bluetooth/bluetooth.h" "ac_cv_header_bluetooth_bluetooth_h" "$ac_includes_default"
+if test "x$ac_cv_header_bluetooth_bluetooth_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_BLUETOOTH_BLUETOOTH_H 1" >>confdefs.h
 
 fi
 
-done
-
 CFLAGS=$SAVE_CFLAGS
 
 # On Darwin (OS X) net/if.h requires sys/socket.h to be imported first.
-for ac_header in net/if.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "net/if.h" "ac_cv_header_net_if_h" "#include <stdio.h>
+ac_fn_c_check_header_compile "$LINENO" "net/if.h" "ac_cv_header_net_if_h" "#include <stdio.h>
 #include <stdlib.h>
 #include <stddef.h>
 #ifdef HAVE_SYS_SOCKET_H
@@ -9963,20 +11018,16 @@ do :
 #endif
 
 "
-if test "x$ac_cv_header_net_if_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_NET_IF_H 1
-_ACEOF
+if test "x$ac_cv_header_net_if_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NET_IF_H 1" >>confdefs.h
 
 fi
 
-done
-
 
 # On Linux, netlink.h requires asm/types.h
-for ac_header in linux/netlink.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "linux/netlink.h" "ac_cv_header_linux_netlink_h" "
+# On FreeBSD, netlink.h is located in netlink/netlink.h
+ac_fn_c_check_header_compile "$LINENO" "linux/netlink.h" "ac_cv_header_linux_netlink_h" "
 #ifdef HAVE_ASM_TYPES_H
 #include <asm/types.h>
 #endif
@@ -9985,20 +11036,29 @@ do :
 #endif
 
 "
-if test "x$ac_cv_header_linux_netlink_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LINUX_NETLINK_H 1
-_ACEOF
+if test "x$ac_cv_header_linux_netlink_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_NETLINK_H 1" >>confdefs.h
 
 fi
+ac_fn_c_check_header_compile "$LINENO" "netlink/netlink.h" "ac_cv_header_netlink_netlink_h" "
+#ifdef HAVE_ASM_TYPES_H
+#include <asm/types.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
 
-done
+"
+if test "x$ac_cv_header_netlink_netlink_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NETLINK_NETLINK_H 1" >>confdefs.h
+
+fi
 
 
 # On Linux, qrtr.h requires asm/types.h
-for ac_header in linux/qrtr.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "linux/qrtr.h" "ac_cv_header_linux_qrtr_h" "
+ac_fn_c_check_header_compile "$LINENO" "linux/qrtr.h" "ac_cv_header_linux_qrtr_h" "
 #ifdef HAVE_ASM_TYPES_H
 #include <asm/types.h>
 #endif
@@ -10007,92 +11067,127 @@ do :
 #endif
 
 "
-if test "x$ac_cv_header_linux_qrtr_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LINUX_QRTR_H 1
-_ACEOF
+if test "x$ac_cv_header_linux_qrtr_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_QRTR_H 1" >>confdefs.h
 
 fi
 
-done
-
 
-for ac_header in linux/vm_sockets.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "linux/vm_sockets.h" "ac_cv_header_linux_vm_sockets_h" "
+ac_fn_c_check_header_compile "$LINENO" "linux/vm_sockets.h" "ac_cv_header_linux_vm_sockets_h" "
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
 
 "
-if test "x$ac_cv_header_linux_vm_sockets_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LINUX_VM_SOCKETS_H 1
-_ACEOF
+if test "x$ac_cv_header_linux_vm_sockets_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_VM_SOCKETS_H 1" >>confdefs.h
 
 fi
 
-done
-
 
 # On Linux, can.h, can/bcm.h, can/j1939.h, can/raw.h require sys/socket.h
 # On NetBSD, netcan/can.h requires sys/socket.h
-for ac_header in linux/can.h linux/can/bcm.h linux/can/j1939.h linux/can/raw.h netcan/can.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "
+ac_fn_c_check_header_compile "$LINENO" "linux/can.h" "ac_cv_header_linux_can_h" "
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
 
 "
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
+if test "x$ac_cv_header_linux_can_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_CAN_H 1" >>confdefs.h
 
 fi
+ac_fn_c_check_header_compile "$LINENO" "linux/can/bcm.h" "ac_cv_header_linux_can_bcm_h" "
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
 
-done
-
-
-# checks for typedefs
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_t in time.h" >&5
-$as_echo_n "checking for clock_t in time.h... " >&6; }
-if ${ac_cv_clock_t_time_h+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <time.h>
+"
+if test "x$ac_cv_header_linux_can_bcm_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_CAN_BCM_H 1" >>confdefs.h
 
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "clock_t" >/dev/null 2>&1; then :
-  ac_cv_clock_t_time_h=yes
-else
-  ac_cv_clock_t_time_h=no
 fi
-rm -f conftest*
+ac_fn_c_check_header_compile "$LINENO" "linux/can/j1939.h" "ac_cv_header_linux_can_j1939_h" "
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
 
+"
+if test "x$ac_cv_header_linux_can_j1939_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_CAN_J1939_H 1" >>confdefs.h
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_clock_t_time_h" >&5
-$as_echo "$ac_cv_clock_t_time_h" >&6; }
-if test "x$ac_cv_clock_t_time_h" = xno; then :
-
-
-$as_echo "#define clock_t long" >>confdefs.h
+ac_fn_c_check_header_compile "$LINENO" "linux/can/raw.h" "ac_cv_header_linux_can_raw_h" "
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
 
+"
+if test "x$ac_cv_header_linux_can_raw_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINUX_CAN_RAW_H 1" >>confdefs.h
 
 fi
+ac_fn_c_check_header_compile "$LINENO" "netcan/can.h" "ac_cv_header_netcan_can_h" "
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for makedev" >&5
-$as_echo_n "checking for makedev... " >&6; }
-if ${ac_cv_func_makedev+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+"
+if test "x$ac_cv_header_netcan_can_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NETCAN_CAN_H 1" >>confdefs.h
+
+fi
+
+
+# checks for typedefs
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clock_t in time.h" >&5
+printf %s "checking for clock_t in time.h... " >&6; }
+if test ${ac_cv_clock_t_time_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <time.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "clock_t" >/dev/null 2>&1
+then :
+  ac_cv_clock_t_time_h=yes
+else $as_nop
+  ac_cv_clock_t_time_h=no
+fi
+rm -rf conftest*
+
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_clock_t_time_h" >&5
+printf "%s\n" "$ac_cv_clock_t_time_h" >&6; }
+if test "x$ac_cv_clock_t_time_h" = xno
+then :
+
+
+printf "%s\n" "#define clock_t long" >>confdefs.h
+
+
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for makedev" >&5
+printf %s "checking for makedev... " >&6; }
+if test ${ac_cv_func_makedev+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -10106,7 +11201,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 #endif
 
 int
-main ()
+main (void)
 {
 
   makedev(0, 0)
@@ -10115,32 +11210,35 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_func_makedev=yes
-else
+else $as_nop
   ac_cv_func_makedev=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_makedev" >&5
-$as_echo "$ac_cv_func_makedev" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_makedev" >&5
+printf "%s\n" "$ac_cv_func_makedev" >&6; }
 
-if test "x$ac_cv_func_makedev" = xyes; then :
+if test "x$ac_cv_func_makedev" = xyes
+then :
 
 
-$as_echo "#define HAVE_MAKEDEV 1" >>confdefs.h
+printf "%s\n" "#define HAVE_MAKEDEV 1" >>confdefs.h
 
 
 fi
 
 # byte swapping
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for le64toh" >&5
-$as_echo_n "checking for le64toh... " >&6; }
-if ${ac_cv_func_le64toh+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for le64toh" >&5
+printf %s "checking for le64toh... " >&6; }
+if test ${ac_cv_func_le64toh+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -10152,7 +11250,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 #endif
 
 int
-main ()
+main (void)
 {
 
    le64toh(1)
@@ -10161,22 +11259,24 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_func_le64toh=yes
-else
+else $as_nop
   ac_cv_func_le64toh=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_le64toh" >&5
-$as_echo "$ac_cv_func_le64toh" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_le64toh" >&5
+printf "%s\n" "$ac_cv_func_le64toh" >&6; }
 
-if test "x$ac_cv_func_le64toh" = xyes; then :
+if test "x$ac_cv_func_le64toh" = xyes
+then :
 
 
-$as_echo "#define HAVE_HTOLE64 1" >>confdefs.h
+printf "%s\n" "#define HAVE_HTOLE64 1" >>confdefs.h
 
 
 fi
@@ -10193,15 +11293,15 @@ if test "$use_lfs" = "yes"; then
 case $ac_sys_system/$ac_sys_release in
 AIX*)
 
-$as_echo "#define _LARGE_FILES 1" >>confdefs.h
+printf "%s\n" "#define _LARGE_FILES 1" >>confdefs.h
 
     ;;
 esac
 
-$as_echo "#define _LARGEFILE_SOURCE 1" >>confdefs.h
+printf "%s\n" "#define _LARGEFILE_SOURCE 1" >>confdefs.h
 
 
-$as_echo "#define _FILE_OFFSET_BITS 64" >>confdefs.h
+printf "%s\n" "#define _FILE_OFFSET_BITS 64" >>confdefs.h
 
 fi
 
@@ -10214,96 +11314,121 @@ EOF
 
 # Type availability checks
 ac_fn_c_check_type "$LINENO" "mode_t" "ac_cv_type_mode_t" "$ac_includes_default"
-if test "x$ac_cv_type_mode_t" = xyes; then :
+if test "x$ac_cv_type_mode_t" = xyes
+then :
 
-else
+else $as_nop
 
-cat >>confdefs.h <<_ACEOF
-#define mode_t int
-_ACEOF
+printf "%s\n" "#define mode_t int" >>confdefs.h
 
 fi
 
 ac_fn_c_check_type "$LINENO" "off_t" "ac_cv_type_off_t" "$ac_includes_default"
-if test "x$ac_cv_type_off_t" = xyes; then :
+if test "x$ac_cv_type_off_t" = xyes
+then :
 
-else
+else $as_nop
 
-cat >>confdefs.h <<_ACEOF
-#define off_t long int
-_ACEOF
+printf "%s\n" "#define off_t long int" >>confdefs.h
 
 fi
 
-ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default"
-if test "x$ac_cv_type_pid_t" = xyes; then :
 
-else
+  ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default
+"
+if test "x$ac_cv_type_pid_t" = xyes
+then :
+
+else $as_nop
+                                          cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+          #if defined _WIN64 && !defined __CYGWIN__
+          LLP64
+          #endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
 
-cat >>confdefs.h <<_ACEOF
-#define pid_t int
 _ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_pid_type='int'
+else $as_nop
+  ac_pid_type='__int64'
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+printf "%s\n" "#define pid_t $ac_pid_type" >>confdefs.h
+
 
 fi
 
 
-cat >>confdefs.h <<_ACEOF
-#define RETSIGTYPE void
-_ACEOF
+
+printf "%s\n" "#define RETSIGTYPE void" >>confdefs.h
 
 ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
-if test "x$ac_cv_type_size_t" = xyes; then :
+if test "x$ac_cv_type_size_t" = xyes
+then :
 
-else
+else $as_nop
 
-cat >>confdefs.h <<_ACEOF
-#define size_t unsigned int
-_ACEOF
+printf "%s\n" "#define size_t unsigned int" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
-$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
-if ${ac_cv_type_uid_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
+printf %s "checking for uid_t in sys/types.h... " >&6; }
+if test ${ac_cv_type_uid_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/types.h>
 
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "uid_t" >/dev/null 2>&1; then :
+  $EGREP "uid_t" >/dev/null 2>&1
+then :
   ac_cv_type_uid_t=yes
-else
+else $as_nop
   ac_cv_type_uid_t=no
 fi
-rm -f conftest*
+rm -rf conftest*
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
-$as_echo "$ac_cv_type_uid_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
+printf "%s\n" "$ac_cv_type_uid_t" >&6; }
 if test $ac_cv_type_uid_t = no; then
 
-$as_echo "#define uid_t int" >>confdefs.h
+printf "%s\n" "#define uid_t int" >>confdefs.h
 
 
-$as_echo "#define gid_t int" >>confdefs.h
+printf "%s\n" "#define gid_t int" >>confdefs.h
 
 fi
 
 
 ac_fn_c_check_type "$LINENO" "ssize_t" "ac_cv_type_ssize_t" "$ac_includes_default"
-if test "x$ac_cv_type_ssize_t" = xyes; then :
+if test "x$ac_cv_type_ssize_t" = xyes
+then :
 
-$as_echo "#define HAVE_SSIZE_T 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SSIZE_T 1" >>confdefs.h
 
 fi
 
 ac_fn_c_check_type "$LINENO" "__uint128_t" "ac_cv_type___uint128_t" "$ac_includes_default"
-if test "x$ac_cv_type___uint128_t" = xyes; then :
+if test "x$ac_cv_type___uint128_t" = xyes
+then :
 
-$as_echo "#define HAVE_GCC_UINT128_T 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GCC_UINT128_T 1" >>confdefs.h
 
 fi
 
@@ -10314,17 +11439,19 @@ fi
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of int" >&5
-$as_echo_n "checking size of int... " >&6; }
-if ${ac_cv_sizeof_int+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (int))" "ac_cv_sizeof_int"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of int" >&5
+printf %s "checking size of int... " >&6; }
+if test ${ac_cv_sizeof_int+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (int))" "ac_cv_sizeof_int"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_int" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (int)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10333,31 +11460,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_int" >&5
-$as_echo "$ac_cv_sizeof_int" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_int" >&5
+printf "%s\n" "$ac_cv_sizeof_int" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_INT $ac_cv_sizeof_int
-_ACEOF
+printf "%s\n" "#define SIZEOF_INT $ac_cv_sizeof_int" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long" >&5
-$as_echo_n "checking size of long... " >&6; }
-if ${ac_cv_sizeof_long+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long))" "ac_cv_sizeof_long"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of long" >&5
+printf %s "checking size of long... " >&6; }
+if test ${ac_cv_sizeof_long+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long))" "ac_cv_sizeof_long"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_long" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (long)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10366,33 +11493,30 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long" >&5
-$as_echo "$ac_cv_sizeof_long" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long" >&5
+printf "%s\n" "$ac_cv_sizeof_long" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_LONG $ac_cv_sizeof_long
-_ACEOF
+printf "%s\n" "#define SIZEOF_LONG $ac_cv_sizeof_long" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler,
 # see AC_CHECK_SIZEOF for more information.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking alignment of long" >&5
-$as_echo_n "checking alignment of long... " >&6; }
-if ${ac_cv_alignof_long+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking alignment of long" >&5
+printf %s "checking alignment of long... " >&6; }
+if test ${ac_cv_alignof_long+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) offsetof (ac__type_alignof_, y)" "ac_cv_alignof_long"        "$ac_includes_default
-#ifndef offsetof
-# define offsetof(type, member) ((char *) &((type *) 0)->member - (char *) 0)
-#endif
-typedef struct { char x; long y; } ac__type_alignof_;"; then :
+typedef struct { char x; long y; } ac__type_alignof_;"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_long" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute alignment of long
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10401,31 +11525,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_long" >&5
-$as_echo "$ac_cv_alignof_long" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_long" >&5
+printf "%s\n" "$ac_cv_alignof_long" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define ALIGNOF_LONG $ac_cv_alignof_long
-_ACEOF
+printf "%s\n" "#define ALIGNOF_LONG $ac_cv_alignof_long" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long long" >&5
-$as_echo_n "checking size of long long... " >&6; }
-if ${ac_cv_sizeof_long_long+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long long))" "ac_cv_sizeof_long_long"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of long long" >&5
+printf %s "checking size of long long... " >&6; }
+if test ${ac_cv_sizeof_long_long+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long long))" "ac_cv_sizeof_long_long"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_long_long" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (long long)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10434,31 +11558,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_long" >&5
-$as_echo "$ac_cv_sizeof_long_long" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_long" >&5
+printf "%s\n" "$ac_cv_sizeof_long_long" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long
-_ACEOF
+printf "%s\n" "#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of void *" >&5
-$as_echo_n "checking size of void *... " >&6; }
-if ${ac_cv_sizeof_void_p+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (void *))" "ac_cv_sizeof_void_p"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of void *" >&5
+printf %s "checking size of void *... " >&6; }
+if test ${ac_cv_sizeof_void_p+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (void *))" "ac_cv_sizeof_void_p"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_void_p" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (void *)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10467,31 +11591,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_void_p" >&5
-$as_echo "$ac_cv_sizeof_void_p" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_void_p" >&5
+printf "%s\n" "$ac_cv_sizeof_void_p" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_VOID_P $ac_cv_sizeof_void_p
-_ACEOF
+printf "%s\n" "#define SIZEOF_VOID_P $ac_cv_sizeof_void_p" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of short" >&5
-$as_echo_n "checking size of short... " >&6; }
-if ${ac_cv_sizeof_short+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (short))" "ac_cv_sizeof_short"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of short" >&5
+printf %s "checking size of short... " >&6; }
+if test ${ac_cv_sizeof_short+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (short))" "ac_cv_sizeof_short"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_short" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (short)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10500,31 +11624,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_short" >&5
-$as_echo "$ac_cv_sizeof_short" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_short" >&5
+printf "%s\n" "$ac_cv_sizeof_short" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_SHORT $ac_cv_sizeof_short
-_ACEOF
+printf "%s\n" "#define SIZEOF_SHORT $ac_cv_sizeof_short" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of float" >&5
-$as_echo_n "checking size of float... " >&6; }
-if ${ac_cv_sizeof_float+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (float))" "ac_cv_sizeof_float"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of float" >&5
+printf %s "checking size of float... " >&6; }
+if test ${ac_cv_sizeof_float+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (float))" "ac_cv_sizeof_float"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_float" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (float)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10533,31 +11657,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_float" >&5
-$as_echo "$ac_cv_sizeof_float" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_float" >&5
+printf "%s\n" "$ac_cv_sizeof_float" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_FLOAT $ac_cv_sizeof_float
-_ACEOF
+printf "%s\n" "#define SIZEOF_FLOAT $ac_cv_sizeof_float" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of double" >&5
-$as_echo_n "checking size of double... " >&6; }
-if ${ac_cv_sizeof_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (double))" "ac_cv_sizeof_double"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of double" >&5
+printf %s "checking size of double... " >&6; }
+if test ${ac_cv_sizeof_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (double))" "ac_cv_sizeof_double"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_double" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (double)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10566,31 +11690,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_double" >&5
-$as_echo "$ac_cv_sizeof_double" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_double" >&5
+printf "%s\n" "$ac_cv_sizeof_double" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_DOUBLE $ac_cv_sizeof_double
-_ACEOF
+printf "%s\n" "#define SIZEOF_DOUBLE $ac_cv_sizeof_double" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of fpos_t" >&5
-$as_echo_n "checking size of fpos_t... " >&6; }
-if ${ac_cv_sizeof_fpos_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (fpos_t))" "ac_cv_sizeof_fpos_t"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of fpos_t" >&5
+printf %s "checking size of fpos_t... " >&6; }
+if test ${ac_cv_sizeof_fpos_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (fpos_t))" "ac_cv_sizeof_fpos_t"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_fpos_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (fpos_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10599,31 +11723,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_fpos_t" >&5
-$as_echo "$ac_cv_sizeof_fpos_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_fpos_t" >&5
+printf "%s\n" "$ac_cv_sizeof_fpos_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_FPOS_T $ac_cv_sizeof_fpos_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_FPOS_T $ac_cv_sizeof_fpos_t" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of size_t" >&5
-$as_echo_n "checking size of size_t... " >&6; }
-if ${ac_cv_sizeof_size_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (size_t))" "ac_cv_sizeof_size_t"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of size_t" >&5
+printf %s "checking size of size_t... " >&6; }
+if test ${ac_cv_sizeof_size_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (size_t))" "ac_cv_sizeof_size_t"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_size_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (size_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10632,33 +11756,30 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_size_t" >&5
-$as_echo "$ac_cv_sizeof_size_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_size_t" >&5
+printf "%s\n" "$ac_cv_sizeof_size_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_SIZE_T $ac_cv_sizeof_size_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_SIZE_T $ac_cv_sizeof_size_t" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler,
 # see AC_CHECK_SIZEOF for more information.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking alignment of size_t" >&5
-$as_echo_n "checking alignment of size_t... " >&6; }
-if ${ac_cv_alignof_size_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking alignment of size_t" >&5
+printf %s "checking alignment of size_t... " >&6; }
+if test ${ac_cv_alignof_size_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) offsetof (ac__type_alignof_, y)" "ac_cv_alignof_size_t"        "$ac_includes_default
-#ifndef offsetof
-# define offsetof(type, member) ((char *) &((type *) 0)->member - (char *) 0)
-#endif
-typedef struct { char x; size_t y; } ac__type_alignof_;"; then :
+typedef struct { char x; size_t y; } ac__type_alignof_;"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_size_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute alignment of size_t
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10667,31 +11788,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_size_t" >&5
-$as_echo "$ac_cv_alignof_size_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_size_t" >&5
+printf "%s\n" "$ac_cv_alignof_size_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define ALIGNOF_SIZE_T $ac_cv_alignof_size_t
-_ACEOF
+printf "%s\n" "#define ALIGNOF_SIZE_T $ac_cv_alignof_size_t" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of pid_t" >&5
-$as_echo_n "checking size of pid_t... " >&6; }
-if ${ac_cv_sizeof_pid_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (pid_t))" "ac_cv_sizeof_pid_t"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of pid_t" >&5
+printf %s "checking size of pid_t... " >&6; }
+if test ${ac_cv_sizeof_pid_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (pid_t))" "ac_cv_sizeof_pid_t"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_pid_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (pid_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10700,31 +11821,31 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_pid_t" >&5
-$as_echo "$ac_cv_sizeof_pid_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_pid_t" >&5
+printf "%s\n" "$ac_cv_sizeof_pid_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_PID_T $ac_cv_sizeof_pid_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_PID_T $ac_cv_sizeof_pid_t" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of uintptr_t" >&5
-$as_echo_n "checking size of uintptr_t... " >&6; }
-if ${ac_cv_sizeof_uintptr_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (uintptr_t))" "ac_cv_sizeof_uintptr_t"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of uintptr_t" >&5
+printf %s "checking size of uintptr_t... " >&6; }
+if test ${ac_cv_sizeof_uintptr_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (uintptr_t))" "ac_cv_sizeof_uintptr_t"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_uintptr_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (uintptr_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10733,33 +11854,30 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_uintptr_t" >&5
-$as_echo "$ac_cv_sizeof_uintptr_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_uintptr_t" >&5
+printf "%s\n" "$ac_cv_sizeof_uintptr_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_UINTPTR_T $ac_cv_sizeof_uintptr_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_UINTPTR_T $ac_cv_sizeof_uintptr_t" >>confdefs.h
 
 
 # The cast to long int works around a bug in the HP C Compiler,
 # see AC_CHECK_SIZEOF for more information.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking alignment of max_align_t" >&5
-$as_echo_n "checking alignment of max_align_t... " >&6; }
-if ${ac_cv_alignof_max_align_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking alignment of max_align_t" >&5
+printf %s "checking alignment of max_align_t... " >&6; }
+if test ${ac_cv_alignof_max_align_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) offsetof (ac__type_alignof_, y)" "ac_cv_alignof_max_align_t"        "$ac_includes_default
-#ifndef offsetof
-# define offsetof(type, member) ((char *) &((type *) 0)->member - (char *) 0)
-#endif
-typedef struct { char x; max_align_t y; } ac__type_alignof_;"; then :
+typedef struct { char x; max_align_t y; } ac__type_alignof_;"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_max_align_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute alignment of max_align_t
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10768,23 +11886,22 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_max_align_t" >&5
-$as_echo "$ac_cv_alignof_max_align_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_alignof_max_align_t" >&5
+printf "%s\n" "$ac_cv_alignof_max_align_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define ALIGNOF_MAX_ALIGN_T $ac_cv_alignof_max_align_t
-_ACEOF
+printf "%s\n" "#define ALIGNOF_MAX_ALIGN_T $ac_cv_alignof_max_align_t" >>confdefs.h
 
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for long double" >&5
-$as_echo_n "checking for long double... " >&6; }
-if ${ac_cv_type_long_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for long double" >&5
+printf %s "checking for long double... " >&6; }
+if test ${ac_cv_type_long_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test "$GCC" = yes; then
        ac_cv_type_long_double=yes
      else
@@ -10794,7 +11911,7 @@ else
 		 not support it.  */
 	      long double foo = 0.0L;
 int
-main ()
+main (void)
 {
 static int test_array [1 - 2 * !(/* On Ultrix 4.3 cc, long double is 4 and double is 8.  */
 	      sizeof (double) <= sizeof (long double))];
@@ -10805,19 +11922,20 @@ return test_array [0];
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_type_long_double=yes
-else
+else $as_nop
   ac_cv_type_long_double=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
      fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_long_double" >&5
-$as_echo "$ac_cv_type_long_double" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_long_double" >&5
+printf "%s\n" "$ac_cv_type_long_double" >&6; }
   if test $ac_cv_type_long_double = yes; then
 
-$as_echo "#define HAVE_LONG_DOUBLE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LONG_DOUBLE 1" >>confdefs.h
 
   fi
 
@@ -10825,17 +11943,19 @@ $as_echo "#define HAVE_LONG_DOUBLE 1" >>confdefs.h
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long double" >&5
-$as_echo_n "checking size of long double... " >&6; }
-if ${ac_cv_sizeof_long_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long double))" "ac_cv_sizeof_long_double"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of long double" >&5
+printf %s "checking size of long double... " >&6; }
+if test ${ac_cv_sizeof_long_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long double))" "ac_cv_sizeof_long_double"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type_long_double" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (long double)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10844,14 +11964,12 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_double" >&5
-$as_echo "$ac_cv_sizeof_long_double" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_double" >&5
+printf "%s\n" "$ac_cv_sizeof_long_double" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_LONG_DOUBLE $ac_cv_sizeof_long_double
-_ACEOF
+printf "%s\n" "#define SIZEOF_LONG_DOUBLE $ac_cv_sizeof_long_double" >>confdefs.h
 
 
 
@@ -10859,17 +11977,19 @@ _ACEOF
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of _Bool" >&5
-$as_echo_n "checking size of _Bool... " >&6; }
-if ${ac_cv_sizeof__Bool+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (_Bool))" "ac_cv_sizeof__Bool"        "$ac_includes_default"; then :
-
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of _Bool" >&5
+printf %s "checking size of _Bool... " >&6; }
+if test ${ac_cv_sizeof__Bool+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (_Bool))" "ac_cv_sizeof__Bool"        "$ac_includes_default"
+then :
+
+else $as_nop
   if test "$ac_cv_type__Bool" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (_Bool)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10878,14 +11998,12 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof__Bool" >&5
-$as_echo "$ac_cv_sizeof__Bool" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof__Bool" >&5
+printf "%s\n" "$ac_cv_sizeof__Bool" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF__BOOL $ac_cv_sizeof__Bool
-_ACEOF
+printf "%s\n" "#define SIZEOF__BOOL $ac_cv_sizeof__Bool" >>confdefs.h
 
 
 
@@ -10893,22 +12011,24 @@ _ACEOF
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of off_t" >&5
-$as_echo_n "checking size of off_t... " >&6; }
-if ${ac_cv_sizeof_off_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of off_t" >&5
+printf %s "checking size of off_t... " >&6; }
+if test ${ac_cv_sizeof_off_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (off_t))" "ac_cv_sizeof_off_t"        "
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
 
-"; then :
+"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_off_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (off_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10917,19 +12037,17 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_off_t" >&5
-$as_echo "$ac_cv_sizeof_off_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_off_t" >&5
+printf "%s\n" "$ac_cv_sizeof_off_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_OFF_T $ac_cv_sizeof_off_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_OFF_T $ac_cv_sizeof_off_t" >>confdefs.h
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable large file support" >&5
-$as_echo_n "checking whether to enable large file support... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether to enable large file support" >&5
+printf %s "checking whether to enable large file support... " >&6; }
 if test "$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \
 	"$ac_cv_sizeof_long_long" -ge "$ac_cv_sizeof_off_t"; then
   have_largefile_support="yes"
@@ -10943,18 +12061,19 @@ case $ac_sys_system in #(
   *) :
      ;;
 esac
-if test "x$have_largefile_support" = xyes; then :
+if test "x$have_largefile_support" = xyes
+then :
 
 
-$as_echo "#define HAVE_LARGEFILE_SUPPORT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LARGEFILE_SUPPORT 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-else
+else $as_nop
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 fi
 
@@ -10962,11 +12081,12 @@ fi
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of time_t" >&5
-$as_echo_n "checking size of time_t... " >&6; }
-if ${ac_cv_sizeof_time_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of time_t" >&5
+printf %s "checking size of time_t... " >&6; }
+if test ${ac_cv_sizeof_time_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (time_t))" "ac_cv_sizeof_time_t"        "
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -10975,12 +12095,13 @@ else
 #include <time.h>
 #endif
 
-"; then :
+"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_time_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (time_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -10989,14 +12110,12 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_time_t" >&5
-$as_echo "$ac_cv_sizeof_time_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_time_t" >&5
+printf "%s\n" "$ac_cv_sizeof_time_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_TIME_T $ac_cv_sizeof_time_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_TIME_T $ac_cv_sizeof_time_t" >>confdefs.h
 
 
 
@@ -11010,18 +12129,19 @@ elif test "$ac_cv_pthread" = "yes"
 then CC="$CC -pthread"
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_t" >&5
-$as_echo_n "checking for pthread_t... " >&6; }
-if ${ac_cv_have_pthread_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_t" >&5
+printf %s "checking for pthread_t... " >&6; }
+if test ${ac_cv_have_pthread_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
   #include <pthread.h>
 int
-main ()
+main (void)
 {
 pthread_t x; x = *(pthread_t*)0;
   ;
@@ -11029,38 +12149,42 @@ pthread_t x; x = *(pthread_t*)0;
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_have_pthread_t=yes
-else
+else $as_nop
   ac_cv_have_pthread_t=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_pthread_t" >&5
-$as_echo "$ac_cv_have_pthread_t" >&6; }
-if test "x$ac_cv_have_pthread_t" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_pthread_t" >&5
+printf "%s\n" "$ac_cv_have_pthread_t" >&6; }
+if test "x$ac_cv_have_pthread_t" = xyes
+then :
 
   # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of pthread_t" >&5
-$as_echo_n "checking size of pthread_t... " >&6; }
-if ${ac_cv_sizeof_pthread_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of pthread_t" >&5
+printf %s "checking size of pthread_t... " >&6; }
+if test ${ac_cv_sizeof_pthread_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (pthread_t))" "ac_cv_sizeof_pthread_t"        "
 #ifdef HAVE_PTHREAD_H
 #include <pthread.h>
 #endif
 
-"; then :
+"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_pthread_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (pthread_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -11069,14 +12193,12 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_pthread_t" >&5
-$as_echo "$ac_cv_sizeof_pthread_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_pthread_t" >&5
+printf "%s\n" "$ac_cv_sizeof_pthread_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_PTHREAD_T $ac_cv_sizeof_pthread_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_PTHREAD_T $ac_cv_sizeof_pthread_t" >>confdefs.h
 
 
 
@@ -11088,18 +12210,20 @@ fi
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of pthread_key_t" >&5
-$as_echo_n "checking size of pthread_key_t... " >&6; }
-if ${ac_cv_sizeof_pthread_key_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of pthread_key_t" >&5
+printf %s "checking size of pthread_key_t... " >&6; }
+if test ${ac_cv_sizeof_pthread_key_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (pthread_key_t))" "ac_cv_sizeof_pthread_key_t"        "#include <pthread.h>
-"; then :
+"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_pthread_key_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (pthread_key_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -11108,77 +12232,78 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_pthread_key_t" >&5
-$as_echo "$ac_cv_sizeof_pthread_key_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_pthread_key_t" >&5
+printf "%s\n" "$ac_cv_sizeof_pthread_key_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_PTHREAD_KEY_T $ac_cv_sizeof_pthread_key_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_PTHREAD_KEY_T $ac_cv_sizeof_pthread_key_t" >>confdefs.h
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthread_key_t is compatible with int" >&5
-$as_echo_n "checking whether pthread_key_t is compatible with int... " >&6; }
-if ${ac_cv_pthread_key_t_is_arithmetic_type+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_key_t is compatible with int" >&5
+printf %s "checking whether pthread_key_t is compatible with int... " >&6; }
+if test ${ac_cv_pthread_key_t_is_arithmetic_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 if test "$ac_cv_sizeof_pthread_key_t" -eq "$ac_cv_sizeof_int" ; then
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <pthread.h>
 int
-main ()
+main (void)
 {
 pthread_key_t k; k * 1;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_pthread_key_t_is_arithmetic_type=yes
-else
+else $as_nop
   ac_cv_pthread_key_t_is_arithmetic_type=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 else
   ac_cv_pthread_key_t_is_arithmetic_type=no
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread_key_t_is_arithmetic_type" >&5
-$as_echo "$ac_cv_pthread_key_t_is_arithmetic_type" >&6; }
-if test "x$ac_cv_pthread_key_t_is_arithmetic_type" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread_key_t_is_arithmetic_type" >&5
+printf "%s\n" "$ac_cv_pthread_key_t_is_arithmetic_type" >&6; }
+if test "x$ac_cv_pthread_key_t_is_arithmetic_type" = xyes
+then :
 
 
-$as_echo "#define PTHREAD_KEY_T_IS_COMPATIBLE_WITH_INT 1" >>confdefs.h
+printf "%s\n" "#define PTHREAD_KEY_T_IS_COMPATIBLE_WITH_INT 1" >>confdefs.h
 
 
 fi
 
 CC="$ac_save_cc"
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-framework" >&5
-$as_echo_n "checking for --enable-framework... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-framework" >&5
+printf %s "checking for --enable-framework... " >&6; }
 if test "$enable_framework"
 then
 	BASECFLAGS="$BASECFLAGS -fno-common -dynamic"
 	# -F. is needed to allow linking to the framework while
 	# in the build location.
 
-$as_echo "#define WITH_NEXT_FRAMEWORK 1" >>confdefs.h
+printf "%s\n" "#define WITH_NEXT_FRAMEWORK 1" >>confdefs.h
 
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	if test $enable_shared = "yes"
 	then
 		as_fn_error $? "Specifying both --enable-shared and --enable-framework is not supported, use only --enable-framework instead" "$LINENO" 5
 	fi
 else
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 # Check for --with-dsymutil
@@ -11186,37 +12311,39 @@ fi
 
 DSYMUTIL=
 DSYMUTIL_PATH=
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-dsymutil" >&5
-$as_echo_n "checking for --with-dsymutil... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-dsymutil" >&5
+printf %s "checking for --with-dsymutil... " >&6; }
 
 # Check whether --with-dsymutil was given.
-if test "${with_dsymutil+set}" = set; then :
+if test ${with_dsymutil+y}
+then :
   withval=$with_dsymutil;
 if test "$withval" != no
 then
   if test "$MACHDEP" != "darwin"; then
     as_fn_error $? "dsymutil debug linking is only available in macOS." "$LINENO" 5
   fi
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; };
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; };
   DSYMUTIL='true'
-else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }; DSYMUTIL=
+else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }; DSYMUTIL=
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
 if test "$DSYMUTIL"; then
   # Extract the first word of "dsymutil", so it can be a program name with args.
 set dummy dsymutil; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_DSYMUTIL_PATH+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_DSYMUTIL_PATH+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $DSYMUTIL_PATH in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_DSYMUTIL_PATH="$DSYMUTIL_PATH" # Let the user override the test with a path.
@@ -11226,11 +12353,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_DSYMUTIL_PATH="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_DSYMUTIL_PATH="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -11243,11 +12374,11 @@ esac
 fi
 DSYMUTIL_PATH=$ac_cv_path_DSYMUTIL_PATH
 if test -n "$DSYMUTIL_PATH"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL_PATH" >&5
-$as_echo "$DSYMUTIL_PATH" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL_PATH" >&5
+printf "%s\n" "$DSYMUTIL_PATH" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -11256,54 +12387,57 @@ fi
   fi
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dyld" >&5
-$as_echo_n "checking for dyld... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dyld" >&5
+printf %s "checking for dyld... " >&6; }
 case $ac_sys_system/$ac_sys_release in
   Darwin/*)
 
-$as_echo "#define WITH_DYLD 1" >>confdefs.h
+printf "%s\n" "#define WITH_DYLD 1" >>confdefs.h
 
-  	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: always on for Darwin" >&5
-$as_echo "always on for Darwin" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: always on for Darwin" >&5
+printf "%s\n" "always on for Darwin" >&6; }
   	;;
   *)
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 	;;
 esac
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-address-sanitizer" >&5
-$as_echo_n "checking for --with-address-sanitizer... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-address-sanitizer" >&5
+printf %s "checking for --with-address-sanitizer... " >&6; }
 
 # Check whether --with-address_sanitizer was given.
-if test "${with_address_sanitizer+set}" = set; then :
+if test ${with_address_sanitizer+y}
+then :
   withval=$with_address_sanitizer;
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
-$as_echo "$withval" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
+printf "%s\n" "$withval" >&6; }
 BASECFLAGS="-fsanitize=address -fno-omit-frame-pointer $BASECFLAGS"
 LDFLAGS="-fsanitize=address $LDFLAGS"
 # ASan works by controlling memory allocation, our own malloc interferes.
 with_pymalloc="no"
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-memory-sanitizer" >&5
-$as_echo_n "checking for --with-memory-sanitizer... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-memory-sanitizer" >&5
+printf %s "checking for --with-memory-sanitizer... " >&6; }
 
 # Check whether --with-memory_sanitizer was given.
-if test "${with_memory_sanitizer+set}" = set; then :
+if test ${with_memory_sanitizer+y}
+then :
   withval=$with_memory_sanitizer;
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
-$as_echo "$withval" >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fsanitize=memory" >&5
-$as_echo_n "checking whether C compiler accepts -fsanitize=memory... " >&6; }
-if ${ax_cv_check_cflags___fsanitize_memory+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
+printf "%s\n" "$withval" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fsanitize=memory" >&5
+printf %s "checking whether C compiler accepts -fsanitize=memory... " >&6; }
+if test ${ax_cv_check_cflags___fsanitize_memory+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   ax_check_save_flags=$CFLAGS
   CFLAGS="$CFLAGS  -fsanitize=memory"
@@ -11311,57 +12445,60 @@ else
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ax_cv_check_cflags___fsanitize_memory=yes
-else
+else $as_nop
   ax_cv_check_cflags___fsanitize_memory=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$ax_check_save_flags
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fsanitize_memory" >&5
-$as_echo "$ax_cv_check_cflags___fsanitize_memory" >&6; }
-if test "x$ax_cv_check_cflags___fsanitize_memory" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fsanitize_memory" >&5
+printf "%s\n" "$ax_cv_check_cflags___fsanitize_memory" >&6; }
+if test "x$ax_cv_check_cflags___fsanitize_memory" = xyes
+then :
 
 BASECFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer $BASECFLAGS"
 LDFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 $LDFLAGS"
 
-else
+else $as_nop
   as_fn_error $? "The selected compiler doesn't support memory sanitizer" "$LINENO" 5
 fi
 
 # MSan works by controlling memory allocation, our own malloc interferes.
 with_pymalloc="no"
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-undefined-behavior-sanitizer" >&5
-$as_echo_n "checking for --with-undefined-behavior-sanitizer... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-undefined-behavior-sanitizer" >&5
+printf %s "checking for --with-undefined-behavior-sanitizer... " >&6; }
 
 # Check whether --with-undefined_behavior_sanitizer was given.
-if test "${with_undefined_behavior_sanitizer+set}" = set; then :
+if test ${with_undefined_behavior_sanitizer+y}
+then :
   withval=$with_undefined_behavior_sanitizer;
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
-$as_echo "$withval" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
+printf "%s\n" "$withval" >&6; }
 BASECFLAGS="-fsanitize=undefined $BASECFLAGS"
 LDFLAGS="-fsanitize=undefined $LDFLAGS"
 with_ubsan="yes"
 
-else
+else $as_nop
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 with_ubsan="no"
 
 fi
@@ -11377,8 +12514,8 @@ fi
 
 # SHLIB_SUFFIX is the extension of shared libraries `(including the dot!)
 # -- usually .so, .sl on HP-UX, .dll on Cygwin
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the extension of shared libraries" >&5
-$as_echo_n "checking the extension of shared libraries... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking the extension of shared libraries" >&5
+printf %s "checking the extension of shared libraries... " >&6; }
 if test -z "$SHLIB_SUFFIX"; then
 	case $ac_sys_system in
 	hp*|HP*)
@@ -11391,15 +12528,15 @@ if test -z "$SHLIB_SUFFIX"; then
 	*)	   SHLIB_SUFFIX=.so;;
 	esac
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $SHLIB_SUFFIX" >&5
-$as_echo "$SHLIB_SUFFIX" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $SHLIB_SUFFIX" >&5
+printf "%s\n" "$SHLIB_SUFFIX" >&6; }
 
 # LDSHARED is the ld *command* used to create shared library
 # -- "cc -G" on SunOS 5.x.
 # (Shared libraries in this instance are shared modules to be loaded into
 # Python, as opposed to building Python itself as a shared library.)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LDSHARED" >&5
-$as_echo_n "checking LDSHARED... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LDSHARED" >&5
+printf %s "checking LDSHARED... " >&6; }
 if test -z "$LDSHARED"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -11515,7 +12652,8 @@ then
 		LDSHARED='$(CC) -Wl,-G,-Bexport'
 		LDCXXSHARED='$(CXX) -Wl,-G,-Bexport';;
 	WASI*)
-		if test "x$enable_wasm_dynamic_linking" = xyes; then :
+		if test "x$enable_wasm_dynamic_linking" = xyes
+then :
 
 
 fi;;
@@ -11530,20 +12668,20 @@ if test "$enable_wasm_dynamic_linking" = "yes" -a "$ac_sys_system" = "Emscripten
   BLDSHARED='$(CC) -shared -sSIDE_MODULE=1'
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LDSHARED" >&5
-$as_echo "$LDSHARED" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LDSHARED" >&5
+printf "%s\n" "$LDSHARED" >&6; }
 LDCXXSHARED=${LDCXXSHARED-$LDSHARED}
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking BLDSHARED flags" >&5
-$as_echo_n "checking BLDSHARED flags... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking BLDSHARED flags" >&5
+printf %s "checking BLDSHARED flags... " >&6; }
 BLDSHARED=${BLDSHARED-$LDSHARED}
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $BLDSHARED" >&5
-$as_echo "$BLDSHARED" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $BLDSHARED" >&5
+printf "%s\n" "$BLDSHARED" >&6; }
 
 # CCSHARED are the C *flags* used to create objects to go into a shared
 # library (module) -- this is only needed for a few systems
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking CCSHARED" >&5
-$as_echo_n "checking CCSHARED... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking CCSHARED" >&5
+printf %s "checking CCSHARED... " >&6; }
 if test -z "$CCSHARED"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -11560,7 +12698,8 @@ then
 	Linux-android*) ;;
 	Linux*|GNU*) CCSHARED="-fPIC";;
 	Emscripten*|WASI*)
-		if test "x$enable_wasm_dynamic_linking" = xyes; then :
+		if test "x$enable_wasm_dynamic_linking" = xyes
+then :
 
 			CCSHARED="-fPIC"
 
@@ -11581,12 +12720,12 @@ fi;;
 		CCSHARED="-fpic -D__SO_PICABILINUX__  -ftls-model=global-dynamic"
 	esac
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CCSHARED" >&5
-$as_echo "$CCSHARED" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CCSHARED" >&5
+printf "%s\n" "$CCSHARED" >&6; }
 # LINKFORSHARED are the flags passed to the $(CC) command that links
 # the python executable -- this is only needed for a few systems
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LINKFORSHARED" >&5
-$as_echo_n "checking LINKFORSHARED... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LINKFORSHARED" >&5
+printf %s "checking LINKFORSHARED... " >&6; }
 if test -z "$LINKFORSHARED"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -11613,9 +12752,7 @@ then
     LINKFORSHARED="-Wl,-stack_size,$stack_size $LINKFORSHARED"
 
 
-cat >>confdefs.h <<_ACEOF
-#define THREAD_STACK_SIZE 0x$stack_size
-_ACEOF
+printf "%s\n" "#define THREAD_STACK_SIZE 0x$stack_size" >>confdefs.h
 
 
 		if test "$enable_framework"
@@ -11654,13 +12791,13 @@ _ACEOF
 		LINKFORSHARED='-Wl,-export-dynamic';;
 	esac
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LINKFORSHARED" >&5
-$as_echo "$LINKFORSHARED" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LINKFORSHARED" >&5
+printf "%s\n" "$LINKFORSHARED" >&6; }
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking CFLAGSFORSHARED" >&5
-$as_echo_n "checking CFLAGSFORSHARED... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking CFLAGSFORSHARED" >&5
+printf %s "checking CFLAGSFORSHARED... " >&6; }
 if test ! "$LIBRARY" = "$LDLIBRARY"
 then
 	case $ac_sys_system in
@@ -11673,14 +12810,15 @@ then
 	esac
 fi
 
-if test "x$enable_wasm_dynamic_linking" = xyes; then :
+if test "x$enable_wasm_dynamic_linking" = xyes
+then :
 
   CFLAGSFORSHARED='$(CCSHARED)'
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CFLAGSFORSHARED" >&5
-$as_echo "$CFLAGSFORSHARED" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CFLAGSFORSHARED" >&5
+printf "%s\n" "$CFLAGSFORSHARED" >&6; }
 
 # SHLIBS are libraries (except -lc and -lm) to link to the python shared
 # library (with --enable-shared).
@@ -11691,17 +12829,17 @@ $as_echo "$CFLAGSFORSHARED" >&6; }
 # don't need to link LIBS explicitly. The default should be only changed
 # on systems where this approach causes problems.
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking SHLIBS" >&5
-$as_echo_n "checking SHLIBS... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking SHLIBS" >&5
+printf %s "checking SHLIBS... " >&6; }
 case "$ac_sys_system" in
 	*)
 		SHLIBS='$(LIBS)';;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $SHLIBS" >&5
-$as_echo "$SHLIBS" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $SHLIBS" >&5
+printf "%s\n" "$SHLIBS" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking perf trampoline" >&5
-$as_echo_n "checking perf trampoline... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking perf trampoline" >&5
+printf %s "checking perf trampoline... " >&6; }
 case $PLATFORM_TRIPLET in #(
   x86_64-linux-gnu) :
     perf_trampoline=yes ;; #(
@@ -11711,17 +12849,19 @@ case $PLATFORM_TRIPLET in #(
     perf_trampoline=no
  ;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $perf_trampoline" >&5
-$as_echo "$perf_trampoline" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $perf_trampoline" >&5
+printf "%s\n" "$perf_trampoline" >&6; }
 
-if test "x$perf_trampoline" = xyes; then :
+if test "x$perf_trampoline" = xyes
+then :
 
 
-$as_echo "#define PY_HAVE_PERF_TRAMPOLINE 1" >>confdefs.h
+printf "%s\n" "#define PY_HAVE_PERF_TRAMPOLINE 1" >>confdefs.h
 
   PERF_TRAMPOLINE_OBJ=Python/asm_trampoline.o
 
-    if test "x$Py_DEBUG" = xtrue; then :
+    if test "x$Py_DEBUG" = xtrue
+then :
 
     as_fn_append BASECFLAGS " -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer"
 
@@ -11731,11 +12871,12 @@ fi
 
 
 # checks for libraries
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sendfile in -lsendfile" >&5
-$as_echo_n "checking for sendfile in -lsendfile... " >&6; }
-if ${ac_cv_lib_sendfile_sendfile+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sendfile in -lsendfile" >&5
+printf %s "checking for sendfile in -lsendfile... " >&6; }
+if test ${ac_cv_lib_sendfile_sendfile+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsendfile  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11744,43 +12885,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sendfile ();
 int
-main ()
+main (void)
 {
 return sendfile ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sendfile_sendfile=yes
-else
+else $as_nop
   ac_cv_lib_sendfile_sendfile=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sendfile_sendfile" >&5
-$as_echo "$ac_cv_lib_sendfile_sendfile" >&6; }
-if test "x$ac_cv_lib_sendfile_sendfile" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSENDFILE 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sendfile_sendfile" >&5
+printf "%s\n" "$ac_cv_lib_sendfile_sendfile" >&6; }
+if test "x$ac_cv_lib_sendfile_sendfile" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSENDFILE 1" >>confdefs.h
 
   LIBS="-lsendfile $LIBS"
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
-$as_echo_n "checking for dlopen in -ldl... " >&6; }
-if ${ac_cv_lib_dl_dlopen+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+printf %s "checking for dlopen in -ldl... " >&6; }
+if test ${ac_cv_lib_dl_dlopen+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-ldl  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11789,43 +12928,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char dlopen ();
 int
-main ()
+main (void)
 {
 return dlopen ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_dl_dlopen=yes
-else
+else $as_nop
   ac_cv_lib_dl_dlopen=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
-$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
-if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBDL 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+printf "%s\n" "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBDL 1" >>confdefs.h
 
   LIBS="-ldl $LIBS"
 
 fi
-	# Dynamic linking for SunOS/Solaris and SYSV
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
-$as_echo_n "checking for shl_load in -ldld... " >&6; }
-if ${ac_cv_lib_dld_shl_load+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+       # Dynamic linking for SunOS/Solaris and SYSV
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
+printf %s "checking for shl_load in -ldld... " >&6; }
+if test ${ac_cv_lib_dld_shl_load+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-ldld  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11834,38 +12971,35 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char shl_load ();
 int
-main ()
+main (void)
 {
 return shl_load ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_dld_shl_load=yes
-else
+else $as_nop
   ac_cv_lib_dld_shl_load=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
-$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
-if test "x$ac_cv_lib_dld_shl_load" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBDLD 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
+printf "%s\n" "$ac_cv_lib_dld_shl_load" >&6; }
+if test "x$ac_cv_lib_dld_shl_load" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBDLD 1" >>confdefs.h
 
   LIBS="-ldld $LIBS"
 
 fi
-	# Dynamic linking for HP-UX
+    # Dynamic linking for HP-UX
 
 
 
@@ -11873,51 +13007,50 @@ fi
 
 have_uuid=missing
 
-for ac_header in uuid.h
+       for ac_header in uuid.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "uuid.h" "ac_cv_header_uuid_h" "$ac_includes_default"
-if test "x$ac_cv_header_uuid_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_UUID_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "uuid.h" "ac_cv_header_uuid_h" "$ac_includes_default"
+if test "x$ac_cv_header_uuid_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UUID_H 1" >>confdefs.h
 
   for ac_func in uuid_create uuid_enc_be
 do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+  as_ac_var=`printf "%s\n" "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+if eval test \"x\$"$as_ac_var"\" = x"yes"
+then :
   cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+#define `printf "%s\n" "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
-    have_uuid=yes
+ have_uuid=yes
     LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""}
     LIBUUID_LIBS=${LIBUUID_LIBS-""}
 
 fi
-done
 
+done
 
 fi
 
 done
 
-
-if test "x$have_uuid" = xmissing; then :
+if test "x$have_uuid" = xmissing
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBUUID" >&5
-$as_echo_n "checking for LIBUUID... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uuid >= 2.20" >&5
+printf %s "checking for uuid >= 2.20... " >&6; }
 
 if test -n "$LIBUUID_CFLAGS"; then
     pkg_cv_LIBUUID_CFLAGS="$LIBUUID_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"uuid >= 2.20\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"uuid >= 2.20\""; } >&5
   ($PKG_CONFIG --exists --print-errors "uuid >= 2.20") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBUUID_CFLAGS=`$PKG_CONFIG --cflags "uuid >= 2.20" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -11931,10 +13064,10 @@ if test -n "$LIBUUID_LIBS"; then
     pkg_cv_LIBUUID_LIBS="$LIBUUID_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"uuid >= 2.20\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"uuid >= 2.20\""; } >&5
   ($PKG_CONFIG --exists --print-errors "uuid >= 2.20") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBUUID_LIBS=`$PKG_CONFIG --libs "uuid >= 2.20" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -11948,8 +13081,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -11973,20 +13106,20 @@ save_LIBS=$LIBS
 
         CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS"
         LDFLAGS="$LDFLAGS $LIBUUID_LIBS"
-        for ac_header in uuid/uuid.h
+               for ac_header in uuid/uuid.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
-if test "x$ac_cv_header_uuid_uuid_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_UUID_UUID_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
+if test "x$ac_cv_header_uuid_uuid_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UUID_UUID_H 1" >>confdefs.h
 
           py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time in -luuid" >&5
-$as_echo_n "checking for uuid_generate_time in -luuid... " >&6; }
-if ${ac_cv_lib_uuid_uuid_generate_time+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time in -luuid" >&5
+printf %s "checking for uuid_generate_time in -luuid... " >&6; }
+if test ${ac_cv_lib_uuid_uuid_generate_time+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-luuid  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11995,41 +13128,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char uuid_generate_time ();
 int
-main ()
+main (void)
 {
 return uuid_generate_time ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_uuid_uuid_generate_time=yes
-else
+else $as_nop
   ac_cv_lib_uuid_uuid_generate_time=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time" >&5
-$as_echo "$ac_cv_lib_uuid_uuid_generate_time" >&6; }
-if test "x$ac_cv_lib_uuid_uuid_generate_time" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time" >&5
+printf "%s\n" "$ac_cv_lib_uuid_uuid_generate_time" >&6; }
+if test "x$ac_cv_lib_uuid_uuid_generate_time" = xyes
+then :
   have_uuid=yes
 fi
 
 LIBS=$py_check_lib_save_LIBS
 
           py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time_safe in -luuid" >&5
-$as_echo_n "checking for uuid_generate_time_safe in -luuid... " >&6; }
-if ${ac_cv_lib_uuid_uuid_generate_time_safe+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time_safe in -luuid" >&5
+printf %s "checking for uuid_generate_time_safe in -luuid... " >&6; }
+if test ${ac_cv_lib_uuid_uuid_generate_time_safe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-luuid  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12038,44 +13171,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char uuid_generate_time_safe ();
 int
-main ()
+main (void)
 {
 return uuid_generate_time_safe ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_uuid_uuid_generate_time_safe=yes
-else
+else $as_nop
   ac_cv_lib_uuid_uuid_generate_time_safe=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time_safe" >&5
-$as_echo "$ac_cv_lib_uuid_uuid_generate_time_safe" >&6; }
-if test "x$ac_cv_lib_uuid_uuid_generate_time_safe" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time_safe" >&5
+printf "%s\n" "$ac_cv_lib_uuid_uuid_generate_time_safe" >&6; }
+if test "x$ac_cv_lib_uuid_uuid_generate_time_safe" = xyes
+then :
   have_uuid=yes
-            $as_echo "#define HAVE_UUID_GENERATE_TIME_SAFE 1" >>confdefs.h
-
+            printf "%s\n" "#define HAVE_UUID_GENERATE_TIME_SAFE 1" >>confdefs.h
 
 fi
 
 LIBS=$py_check_lib_save_LIBS
 
-
 fi
 
 done
-
-        if test "x$have_uuid" = xyes; then :
+        if test "x$have_uuid" = xyes
+then :
 
           LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""}
           LIBUUID_LIBS=${LIBUUID_LIBS-"-luuid"}
@@ -12091,8 +13221,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
       save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -12102,20 +13232,20 @@ save_LIBS=$LIBS
 
         CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS"
         LDFLAGS="$LDFLAGS $LIBUUID_LIBS"
-        for ac_header in uuid/uuid.h
+               for ac_header in uuid/uuid.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
-if test "x$ac_cv_header_uuid_uuid_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_UUID_UUID_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
+if test "x$ac_cv_header_uuid_uuid_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UUID_UUID_H 1" >>confdefs.h
 
           py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time in -luuid" >&5
-$as_echo_n "checking for uuid_generate_time in -luuid... " >&6; }
-if ${ac_cv_lib_uuid_uuid_generate_time+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time in -luuid" >&5
+printf %s "checking for uuid_generate_time in -luuid... " >&6; }
+if test ${ac_cv_lib_uuid_uuid_generate_time+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-luuid  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12124,41 +13254,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char uuid_generate_time ();
 int
-main ()
+main (void)
 {
 return uuid_generate_time ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_uuid_uuid_generate_time=yes
-else
+else $as_nop
   ac_cv_lib_uuid_uuid_generate_time=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time" >&5
-$as_echo "$ac_cv_lib_uuid_uuid_generate_time" >&6; }
-if test "x$ac_cv_lib_uuid_uuid_generate_time" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time" >&5
+printf "%s\n" "$ac_cv_lib_uuid_uuid_generate_time" >&6; }
+if test "x$ac_cv_lib_uuid_uuid_generate_time" = xyes
+then :
   have_uuid=yes
 fi
 
 LIBS=$py_check_lib_save_LIBS
 
           py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time_safe in -luuid" >&5
-$as_echo_n "checking for uuid_generate_time_safe in -luuid... " >&6; }
-if ${ac_cv_lib_uuid_uuid_generate_time_safe+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time_safe in -luuid" >&5
+printf %s "checking for uuid_generate_time_safe in -luuid... " >&6; }
+if test ${ac_cv_lib_uuid_uuid_generate_time_safe+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-luuid  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12167,44 +13297,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char uuid_generate_time_safe ();
 int
-main ()
+main (void)
 {
 return uuid_generate_time_safe ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_uuid_uuid_generate_time_safe=yes
-else
+else $as_nop
   ac_cv_lib_uuid_uuid_generate_time_safe=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time_safe" >&5
-$as_echo "$ac_cv_lib_uuid_uuid_generate_time_safe" >&6; }
-if test "x$ac_cv_lib_uuid_uuid_generate_time_safe" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time_safe" >&5
+printf "%s\n" "$ac_cv_lib_uuid_uuid_generate_time_safe" >&6; }
+if test "x$ac_cv_lib_uuid_uuid_generate_time_safe" = xyes
+then :
   have_uuid=yes
-            $as_echo "#define HAVE_UUID_GENERATE_TIME_SAFE 1" >>confdefs.h
-
+            printf "%s\n" "#define HAVE_UUID_GENERATE_TIME_SAFE 1" >>confdefs.h
 
 fi
 
 LIBS=$py_check_lib_save_LIBS
 
-
 fi
 
 done
-
-        if test "x$have_uuid" = xyes; then :
+        if test "x$have_uuid" = xyes
+then :
 
           LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""}
           LIBUUID_LIBS=${LIBUUID_LIBS-"-luuid"}
@@ -12222,31 +13349,31 @@ LIBS=$save_LIBS
 else
 	LIBUUID_CFLAGS=$pkg_cv_LIBUUID_CFLAGS
 	LIBUUID_LIBS=$pkg_cv_LIBUUID_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+	            have_uuid=yes
+      printf "%s\n" "#define HAVE_UUID_H 1" >>confdefs.h
 
-                  have_uuid=yes
-      $as_echo "#define HAVE_UUID_H 1" >>confdefs.h
-
-      $as_echo "#define HAVE_UUID_GENERATE_TIME_SAFE 1" >>confdefs.h
+      printf "%s\n" "#define HAVE_UUID_GENERATE_TIME_SAFE 1" >>confdefs.h
 
 
 fi
 
 fi
 
-if test "x$have_uuid" = xmissing; then :
+if test "x$have_uuid" = xmissing
+then :
 
-  for ac_header in uuid/uuid.h
+         for ac_header in uuid/uuid.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
-if test "x$ac_cv_header_uuid_uuid_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_UUID_UUID_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
+if test "x$ac_cv_header_uuid_uuid_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UUID_UUID_H 1" >>confdefs.h
 
     ac_fn_c_check_func "$LINENO" "uuid_generate_time" "ac_cv_func_uuid_generate_time"
-if test "x$ac_cv_func_uuid_generate_time" = xyes; then :
+if test "x$ac_cv_func_uuid_generate_time" = xyes
+then :
 
       have_uuid=yes
       LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""}
@@ -12259,21 +13386,22 @@ fi
 
 done
 
-
 fi
 
-if test "x$have_uuid" = xmissing; then :
+if test "x$have_uuid" = xmissing
+then :
   have_uuid=no
 fi
 
 # 'Real Time' functions on Solaris
 # posix4 on Solaris 2.6
 # pthread (first!) on Linux
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing sem_init" >&5
-$as_echo_n "checking for library containing sem_init... " >&6; }
-if ${ac_cv_search_sem_init+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing sem_init" >&5
+printf %s "checking for library containing sem_init... " >&6; }
+if test ${ac_cv_search_sem_init+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -12281,57 +13409,60 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sem_init ();
 int
-main ()
+main (void)
 {
 return sem_init ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' pthread rt posix4; do
+for ac_lib in '' pthread rt posix4
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
+  if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_search_sem_init=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_sem_init+:} false; then :
+  if test ${ac_cv_search_sem_init+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_sem_init+:} false; then :
+if test ${ac_cv_search_sem_init+y}
+then :
 
-else
+else $as_nop
   ac_cv_search_sem_init=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_sem_init" >&5
-$as_echo "$ac_cv_search_sem_init" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_sem_init" >&5
+printf "%s\n" "$ac_cv_search_sem_init" >&6; }
 ac_res=$ac_cv_search_sem_init
-if test "$ac_res" != no; then :
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
 fi
 
 
 # check if we need libintl for locale functions
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for textdomain in -lintl" >&5
-$as_echo_n "checking for textdomain in -lintl... " >&6; }
-if ${ac_cv_lib_intl_textdomain+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for textdomain in -lintl" >&5
+printf %s "checking for textdomain in -lintl... " >&6; }
+if test ${ac_cv_lib_intl_textdomain+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lintl  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12340,32 +13471,31 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char textdomain ();
 int
-main ()
+main (void)
 {
 return textdomain ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_intl_textdomain=yes
-else
+else $as_nop
   ac_cv_lib_intl_textdomain=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_intl_textdomain" >&5
-$as_echo "$ac_cv_lib_intl_textdomain" >&6; }
-if test "x$ac_cv_lib_intl_textdomain" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_intl_textdomain" >&5
+printf "%s\n" "$ac_cv_lib_intl_textdomain" >&6; }
+if test "x$ac_cv_lib_intl_textdomain" = xyes
+then :
 
-$as_echo "#define WITH_LIBINTL 1" >>confdefs.h
+printf "%s\n" "#define WITH_LIBINTL 1" >>confdefs.h
 
         LIBS="-lintl $LIBS"
 fi
@@ -12373,14 +13503,14 @@ fi
 
 # checks for system dependent C++ extensions support
 case "$ac_sys_system" in
-	AIX*)	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for genuine AIX C++ extensions support" >&5
-$as_echo_n "checking for genuine AIX C++ extensions support... " >&6; }
+	AIX*)	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for genuine AIX C++ extensions support" >&5
+printf %s "checking for genuine AIX C++ extensions support... " >&6; }
 		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 		  #include <load.h>
 int
-main ()
+main (void)
 {
 loadAndInit("", 0, "")
   ;
@@ -12388,48 +13518,49 @@ loadAndInit("", 0, "")
 }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
 
 
-$as_echo "#define AIX_GENUINE_CPLUSPLUS 1" >>confdefs.h
+printf "%s\n" "#define AIX_GENUINE_CPLUSPLUS 1" >>confdefs.h
 
-		  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+		  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-else
+else $as_nop
 
-		  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+		  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 # BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the platform_tag
 # of the AIX system used to build/package Python executable. This tag serves
 # as a baseline for bdist module packages
-               { $as_echo "$as_me:${as_lineno-$LINENO}: checking for the system builddate" >&5
-$as_echo_n "checking for the system builddate... " >&6; }
+               { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the system builddate" >&5
+printf %s "checking for the system builddate... " >&6; }
                AIX_BUILDDATE=$(lslpp -Lcq bos.mp64 | awk -F:  '{ print $NF }')
 
-cat >>confdefs.h <<_ACEOF
-#define AIX_BUILDDATE $AIX_BUILDDATE
-_ACEOF
+printf "%s\n" "#define AIX_BUILDDATE $AIX_BUILDDATE" >>confdefs.h
 
-               { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AIX_BUILDDATE" >&5
-$as_echo "$AIX_BUILDDATE" >&6; }
+               { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AIX_BUILDDATE" >&5
+printf "%s\n" "$AIX_BUILDDATE" >&6; }
                ;;
 	*) ;;
 esac
 
 # check for systems that require aligned memory access
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking aligned memory access is required" >&5
-$as_echo_n "checking aligned memory access is required... " >&6; }
-if ${ac_cv_aligned_required+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking aligned memory access is required" >&5
+printf %s "checking aligned memory access is required... " >&6; }
+if test ${ac_cv_aligned_required+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_aligned_required=yes
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -12446,9 +13577,10 @@ int main(void)
     return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_aligned_required=no
-else
+else $as_nop
   ac_cv_aligned_required=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -12457,36 +13589,37 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_aligned_required" >&5
-$as_echo "$ac_cv_aligned_required" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_aligned_required" >&5
+printf "%s\n" "$ac_cv_aligned_required" >&6; }
 if test "$ac_cv_aligned_required" = yes ; then
 
-$as_echo "#define HAVE_ALIGNED_REQUIRED 1" >>confdefs.h
+printf "%s\n" "#define HAVE_ALIGNED_REQUIRED 1" >>confdefs.h
 
 fi
 
 # str, bytes and memoryview hash algorithm
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-hash-algorithm" >&5
-$as_echo_n "checking for --with-hash-algorithm... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-hash-algorithm" >&5
+printf %s "checking for --with-hash-algorithm... " >&6; }
 
 # Check whether --with-hash_algorithm was given.
-if test "${with_hash_algorithm+set}" = set; then :
+if test ${with_hash_algorithm+y}
+then :
   withval=$with_hash_algorithm;
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
-$as_echo "$withval" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
+printf "%s\n" "$withval" >&6; }
 case "$withval" in
     siphash13)
-        $as_echo "#define Py_HASH_ALGORITHM 3" >>confdefs.h
+        printf "%s\n" "#define Py_HASH_ALGORITHM 3" >>confdefs.h
 
         ;;
     siphash24)
-        $as_echo "#define Py_HASH_ALGORITHM 1" >>confdefs.h
+        printf "%s\n" "#define Py_HASH_ALGORITHM 1" >>confdefs.h
 
         ;;
     fnv)
-        $as_echo "#define Py_HASH_ALGORITHM 2" >>confdefs.h
+        printf "%s\n" "#define Py_HASH_ALGORITHM 2" >>confdefs.h
 
         ;;
     *)
@@ -12494,9 +13627,9 @@ case "$withval" in
         ;;
 esac
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: default" >&5
-$as_echo "default" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: default" >&5
+printf "%s\n" "default" >&6; }
 fi
 
 
@@ -12515,11 +13648,12 @@ validate_tzpath() {
 }
 
 TZPATH="/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-tzpath" >&5
-$as_echo_n "checking for --with-tzpath... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-tzpath" >&5
+printf %s "checking for --with-tzpath... " >&6; }
 
 # Check whether --with-tzpath was given.
-if test "${with_tzpath+set}" = set; then :
+if test ${with_tzpath+y}
+then :
   withval=$with_tzpath;
 case "$withval" in
     yes)
@@ -12528,25 +13662,26 @@ case "$withval" in
     *)
         validate_tzpath "$withval"
         TZPATH="$withval"
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: \"$withval\"" >&5
-$as_echo "\"$withval\"" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: \"$withval\"" >&5
+printf "%s\n" "\"$withval\"" >&6; }
         ;;
 esac
 
-else
+else $as_nop
   validate_tzpath "$TZPATH"
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: \"$TZPATH\"" >&5
-$as_echo "\"$TZPATH\"" >&6; }
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: \"$TZPATH\"" >&5
+printf "%s\n" "\"$TZPATH\"" >&6; }
 fi
 
 
 
 # Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for t_open in -lnsl" >&5
-$as_echo_n "checking for t_open in -lnsl... " >&6; }
-if ${ac_cv_lib_nsl_t_open+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for t_open in -lnsl" >&5
+printf %s "checking for t_open in -lnsl... " >&6; }
+if test ${ac_cv_lib_nsl_t_open+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lnsl  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12555,38 +13690,38 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char t_open ();
 int
-main ()
+main (void)
 {
 return t_open ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_nsl_t_open=yes
-else
+else $as_nop
   ac_cv_lib_nsl_t_open=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_t_open" >&5
-$as_echo "$ac_cv_lib_nsl_t_open" >&6; }
-if test "x$ac_cv_lib_nsl_t_open" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_t_open" >&5
+printf "%s\n" "$ac_cv_lib_nsl_t_open" >&6; }
+if test "x$ac_cv_lib_nsl_t_open" = xyes
+then :
   LIBS="-lnsl $LIBS"
 fi
  # SVR4
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket in -lsocket" >&5
-$as_echo_n "checking for socket in -lsocket... " >&6; }
-if ${ac_cv_lib_socket_socket+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for socket in -lsocket" >&5
+printf %s "checking for socket in -lsocket... " >&6; }
+if test ${ac_cv_lib_socket_socket+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsocket $LIBS $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12595,41 +13730,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char socket ();
 int
-main ()
+main (void)
 {
 return socket ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_socket_socket=yes
-else
+else $as_nop
   ac_cv_lib_socket_socket=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_socket" >&5
-$as_echo "$ac_cv_lib_socket_socket" >&6; }
-if test "x$ac_cv_lib_socket_socket" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_socket" >&5
+printf "%s\n" "$ac_cv_lib_socket_socket" >&6; }
+if test "x$ac_cv_lib_socket_socket" = xyes
+then :
   LIBS="-lsocket $LIBS"
 fi
  # SVR4 sockets
 
 case $ac_sys_system/$ac_sys_release in
     Haiku*)
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket in -lnetwork" >&5
-$as_echo_n "checking for socket in -lnetwork... " >&6; }
-if ${ac_cv_lib_network_socket+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for socket in -lnetwork" >&5
+printf %s "checking for socket in -lnetwork... " >&6; }
+if test ${ac_cv_lib_network_socket+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lnetwork $LIBS $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12638,74 +13773,76 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char socket ();
 int
-main ()
+main (void)
 {
 return socket ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_network_socket=yes
-else
+else $as_nop
   ac_cv_lib_network_socket=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_network_socket" >&5
-$as_echo "$ac_cv_lib_network_socket" >&6; }
-if test "x$ac_cv_lib_network_socket" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_network_socket" >&5
+printf "%s\n" "$ac_cv_lib_network_socket" >&6; }
+if test "x$ac_cv_lib_network_socket" = xyes
+then :
   LIBS="-lnetwork $LIBS"
 fi
 
     ;;
 esac
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-libs" >&5
-$as_echo_n "checking for --with-libs... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-libs" >&5
+printf %s "checking for --with-libs... " >&6; }
 
 # Check whether --with-libs was given.
-if test "${with_libs+set}" = set; then :
+if test ${with_libs+y}
+then :
   withval=$with_libs;
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
-$as_echo "$withval" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
+printf "%s\n" "$withval" >&6; }
 LIBS="$withval $LIBS"
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
 # Check for use of the system expat library
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-system-expat" >&5
-$as_echo_n "checking for --with-system-expat... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-system-expat" >&5
+printf %s "checking for --with-system-expat... " >&6; }
 
 # Check whether --with-system_expat was given.
-if test "${with_system_expat+set}" = set; then :
+if test ${with_system_expat+y}
+then :
   withval=$with_system_expat;
-else
+else $as_nop
   with_system_expat="no"
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_system_expat" >&5
-$as_echo "$with_system_expat" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_system_expat" >&5
+printf "%s\n" "$with_system_expat" >&6; }
 
-if test "x$with_system_expat" = xyes; then :
+if test "x$with_system_expat" = xyes
+then :
 
   LIBEXPAT_CFLAGS=${LIBEXPAT_CFLAGS-""}
   LIBEXPAT_LDFLAGS=${LIBEXPAT_LDFLAGS-"-lexpat"}
   LIBEXPAT_INTERNAL=
 
-else
+else $as_nop
 
   LIBEXPAT_CFLAGS="-I\$(srcdir)/Modules/expat"
   LIBEXPAT_LDFLAGS="-lm \$(LIBEXPAT_A)"
@@ -12717,7 +13854,8 @@ fi
 
 
 have_libffi=missing
-if test "x$ac_sys_system" = xDarwin; then :
+if test "x$ac_sys_system" = xDarwin
+then :
 
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -12726,14 +13864,16 @@ save_LIBS=$LIBS
 
 
     CFLAGS="-I${SDKROOT}/usr/include/ffi $CFLAGS"
-    ac_fn_c_check_header_mongrel "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
-if test "x$ac_cv_header_ffi_h" = xyes; then :
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_call in -lffi" >&5
-$as_echo_n "checking for ffi_call in -lffi... " >&6; }
-if ${ac_cv_lib_ffi_ffi_call+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    ac_fn_c_check_header_compile "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
+if test "x$ac_cv_header_ffi_h" = xyes
+then :
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ffi_call in -lffi" >&5
+printf %s "checking for ffi_call in -lffi... " >&6; }
+if test ${ac_cv_lib_ffi_ffi_call+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lffi  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12742,30 +13882,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char ffi_call ();
 int
-main ()
+main (void)
 {
 return ffi_call ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ffi_ffi_call=yes
-else
+else $as_nop
   ac_cv_lib_ffi_ffi_call=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_call" >&5
-$as_echo "$ac_cv_lib_ffi_ffi_call" >&6; }
-if test "x$ac_cv_lib_ffi_ffi_call" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_call" >&5
+printf "%s\n" "$ac_cv_lib_ffi_ffi_call" >&6; }
+if test "x$ac_cv_lib_ffi_ffi_call" = xyes
+then :
 
                 have_libffi=yes
         LIBFFI_CFLAGS="-I${SDKROOT}/usr/include/ffi -DUSING_APPLE_OS_LIBFFI=1"
@@ -12777,7 +13916,6 @@ fi
 fi
 
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -12786,21 +13924,22 @@ LIBS=$save_LIBS
 
 
 fi
-if test "x$have_libffi" = xmissing; then :
+if test "x$have_libffi" = xmissing
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBFFI" >&5
-$as_echo_n "checking for LIBFFI... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libffi" >&5
+printf %s "checking for libffi... " >&6; }
 
 if test -n "$LIBFFI_CFLAGS"; then
     pkg_cv_LIBFFI_CFLAGS="$LIBFFI_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libffi\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libffi\""; } >&5
   ($PKG_CONFIG --exists --print-errors "libffi") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBFFI_CFLAGS=`$PKG_CONFIG --cflags "libffi" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -12814,10 +13953,10 @@ if test -n "$LIBFFI_LIBS"; then
     pkg_cv_LIBFFI_LIBS="$LIBFFI_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libffi\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libffi\""; } >&5
   ($PKG_CONFIG --exists --print-errors "libffi") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBFFI_LIBS=`$PKG_CONFIG --libs "libffi" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -12831,8 +13970,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -12856,14 +13995,16 @@ save_LIBS=$LIBS
 
       CPPFLAGS="$CPPFLAGS $LIBFFI_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBFFI_LIBS"
-      ac_fn_c_check_header_mongrel "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
-if test "x$ac_cv_header_ffi_h" = xyes; then :
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_call in -lffi" >&5
-$as_echo_n "checking for ffi_call in -lffi... " >&6; }
-if ${ac_cv_lib_ffi_ffi_call+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      ac_fn_c_check_header_compile "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
+if test "x$ac_cv_header_ffi_h" = xyes
+then :
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ffi_call in -lffi" >&5
+printf %s "checking for ffi_call in -lffi... " >&6; }
+if test ${ac_cv_lib_ffi_ffi_call+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lffi  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12872,36 +14013,35 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char ffi_call ();
 int
-main ()
+main (void)
 {
 return ffi_call ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ffi_ffi_call=yes
-else
+else $as_nop
   ac_cv_lib_ffi_ffi_call=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_call" >&5
-$as_echo "$ac_cv_lib_ffi_ffi_call" >&6; }
-if test "x$ac_cv_lib_ffi_ffi_call" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_call" >&5
+printf "%s\n" "$ac_cv_lib_ffi_ffi_call" >&6; }
+if test "x$ac_cv_lib_ffi_ffi_call" = xyes
+then :
 
           have_libffi=yes
           LIBFFI_CFLAGS=${LIBFFI_CFLAGS-""}
           LIBFFI_LIBS=${LIBFFI_LIBS-"-lffi"}
 
-else
+else $as_nop
   have_libffi=no
 fi
 
@@ -12909,7 +14049,6 @@ fi
 fi
 
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -12918,8 +14057,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
     save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -12929,14 +14068,16 @@ save_LIBS=$LIBS
 
       CPPFLAGS="$CPPFLAGS $LIBFFI_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBFFI_LIBS"
-      ac_fn_c_check_header_mongrel "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
-if test "x$ac_cv_header_ffi_h" = xyes; then :
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_call in -lffi" >&5
-$as_echo_n "checking for ffi_call in -lffi... " >&6; }
-if ${ac_cv_lib_ffi_ffi_call+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      ac_fn_c_check_header_compile "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
+if test "x$ac_cv_header_ffi_h" = xyes
+then :
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ffi_call in -lffi" >&5
+printf %s "checking for ffi_call in -lffi... " >&6; }
+if test ${ac_cv_lib_ffi_ffi_call+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lffi  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12945,36 +14086,35 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char ffi_call ();
 int
-main ()
+main (void)
 {
 return ffi_call ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ffi_ffi_call=yes
-else
+else $as_nop
   ac_cv_lib_ffi_ffi_call=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_call" >&5
-$as_echo "$ac_cv_lib_ffi_ffi_call" >&6; }
-if test "x$ac_cv_lib_ffi_ffi_call" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_call" >&5
+printf "%s\n" "$ac_cv_lib_ffi_ffi_call" >&6; }
+if test "x$ac_cv_lib_ffi_ffi_call" = xyes
+then :
 
           have_libffi=yes
           LIBFFI_CFLAGS=${LIBFFI_CFLAGS-""}
           LIBFFI_LIBS=${LIBFFI_LIBS-"-lffi"}
 
-else
+else $as_nop
   have_libffi=no
 fi
 
@@ -12982,7 +14122,6 @@ fi
 fi
 
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -12993,14 +14132,15 @@ LIBS=$save_LIBS
 else
 	LIBFFI_CFLAGS=$pkg_cv_LIBFFI_CFLAGS
 	LIBFFI_LIBS=$pkg_cv_LIBFFI_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	have_libffi=yes
 fi
 
 fi
 
-if test "x$have_libffi" = xyes; then :
+if test "x$have_libffi" = xyes
+then :
 
   ctypes_malloc_closure=no
   case $ac_sys_system in #(
@@ -13014,7 +14154,8 @@ if test "x$have_libffi" = xyes; then :
   *) :
      ;;
 esac
-  if test "x$ctypes_malloc_closure" = xyes; then :
+  if test "x$ctypes_malloc_closure" = xyes
+then :
 
     MODULE__CTYPES_MALLOC_CLOSURE=_ctypes/malloc_closure.c
     as_fn_append LIBFFI_CFLAGS " -DUSING_MALLOC_CLOSURE_DOT_C=1"
@@ -13022,7 +14163,8 @@ esac
 fi
 
 
-    if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
+    if test "x$ac_cv_lib_dl_dlopen" = xyes
+then :
   as_fn_append LIBFFI_LIBS " -ldl"
 fi
 
@@ -13037,35 +14179,38 @@ save_LIBS=$LIBS
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_prep_cif_var" >&5
-$as_echo_n "checking for ffi_prep_cif_var... " >&6; }
-if ${ac_cv_func_ffi_prep_cif_var+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ffi_prep_cif_var" >&5
+printf %s "checking for ffi_prep_cif_var... " >&6; }
+if test ${ac_cv_func_ffi_prep_cif_var+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <ffi.h>
 int
-main ()
+main (void)
 {
 void *x=ffi_prep_cif_var
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_ffi_prep_cif_var=yes
-else
+else $as_nop
   ac_cv_func_ffi_prep_cif_var=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ffi_prep_cif_var" >&5
-$as_echo "$ac_cv_func_ffi_prep_cif_var" >&6; }
-  if test "x$ac_cv_func_ffi_prep_cif_var" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ffi_prep_cif_var" >&5
+printf "%s\n" "$ac_cv_func_ffi_prep_cif_var" >&6; }
+  if test "x$ac_cv_func_ffi_prep_cif_var" = xyes
+then :
 
-$as_echo "#define HAVE_FFI_PREP_CIF_VAR 1" >>confdefs.h
+printf "%s\n" "#define HAVE_FFI_PREP_CIF_VAR 1" >>confdefs.h
 
 fi
 
@@ -13073,35 +14218,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_prep_closure_loc" >&5
-$as_echo_n "checking for ffi_prep_closure_loc... " >&6; }
-if ${ac_cv_func_ffi_prep_closure_loc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ffi_prep_closure_loc" >&5
+printf %s "checking for ffi_prep_closure_loc... " >&6; }
+if test ${ac_cv_func_ffi_prep_closure_loc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <ffi.h>
 int
-main ()
+main (void)
 {
 void *x=ffi_prep_closure_loc
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_ffi_prep_closure_loc=yes
-else
+else $as_nop
   ac_cv_func_ffi_prep_closure_loc=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ffi_prep_closure_loc" >&5
-$as_echo "$ac_cv_func_ffi_prep_closure_loc" >&6; }
-  if test "x$ac_cv_func_ffi_prep_closure_loc" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ffi_prep_closure_loc" >&5
+printf "%s\n" "$ac_cv_func_ffi_prep_closure_loc" >&6; }
+  if test "x$ac_cv_func_ffi_prep_closure_loc" = xyes
+then :
 
-$as_echo "#define HAVE_FFI_PREP_CLOSURE_LOC 1" >>confdefs.h
+printf "%s\n" "#define HAVE_FFI_PREP_CLOSURE_LOC 1" >>confdefs.h
 
 fi
 
@@ -13109,35 +14257,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_closure_alloc" >&5
-$as_echo_n "checking for ffi_closure_alloc... " >&6; }
-if ${ac_cv_func_ffi_closure_alloc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ffi_closure_alloc" >&5
+printf %s "checking for ffi_closure_alloc... " >&6; }
+if test ${ac_cv_func_ffi_closure_alloc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <ffi.h>
 int
-main ()
+main (void)
 {
 void *x=ffi_closure_alloc
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_ffi_closure_alloc=yes
-else
+else $as_nop
   ac_cv_func_ffi_closure_alloc=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ffi_closure_alloc" >&5
-$as_echo "$ac_cv_func_ffi_closure_alloc" >&6; }
-  if test "x$ac_cv_func_ffi_closure_alloc" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ffi_closure_alloc" >&5
+printf "%s\n" "$ac_cv_func_ffi_closure_alloc" >&6; }
+  if test "x$ac_cv_func_ffi_closure_alloc" = xyes
+then :
 
-$as_echo "#define HAVE_FFI_CLOSURE_ALLOC 1" >>confdefs.h
+printf "%s\n" "#define HAVE_FFI_CLOSURE_ALLOC 1" >>confdefs.h
 
 fi
 
@@ -13154,32 +14305,35 @@ LIBS=$save_LIBS
 fi
 
 # Check for use of the system libmpdec library
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-system-libmpdec" >&5
-$as_echo_n "checking for --with-system-libmpdec... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-system-libmpdec" >&5
+printf %s "checking for --with-system-libmpdec... " >&6; }
 
 # Check whether --with-system_libmpdec was given.
-if test "${with_system_libmpdec+set}" = set; then :
+if test ${with_system_libmpdec+y}
+then :
   withval=$with_system_libmpdec;
-else
+else $as_nop
   with_system_libmpdec="no"
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_system_libmpdec" >&5
-$as_echo "$with_system_libmpdec" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_system_libmpdec" >&5
+printf "%s\n" "$with_system_libmpdec" >&6; }
 
-if test "x$with_system_libmpdec" = xyes; then :
+if test "x$with_system_libmpdec" = xyes
+then :
 
   LIBMPDEC_CFLAGS=${LIBMPDEC_CFLAGS-""}
   LIBMPDEC_LDFLAGS=${LIBMPDEC_LDFLAGS-"-lmpdec"}
   LIBMPDEC_INTERNAL=
 
-else
+else $as_nop
 
   LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
   LIBMPDEC_LDFLAGS="-lm \$(LIBMPDEC_A)"
   LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
 
-    if test "x$with_pydebug" = xyes; then :
+    if test "x$with_pydebug" = xyes
+then :
 
     as_fn_append LIBMPDEC_CFLAGS " -DTEST_COVERAGE"
 
@@ -13191,13 +14345,14 @@ fi
 
 
 # Check whether _decimal should use a coroutine-local or thread-local context
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-decimal-contextvar" >&5
-$as_echo_n "checking for --with-decimal-contextvar... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-decimal-contextvar" >&5
+printf %s "checking for --with-decimal-contextvar... " >&6; }
 
 # Check whether --with-decimal_contextvar was given.
-if test "${with_decimal_contextvar+set}" = set; then :
+if test ${with_decimal_contextvar+y}
+then :
   withval=$with_decimal_contextvar;
-else
+else $as_nop
   with_decimal_contextvar="yes"
 fi
 
@@ -13205,16 +14360,16 @@ fi
 if test "$with_decimal_contextvar" != "no"
 then
 
-$as_echo "#define WITH_DECIMAL_CONTEXTVAR 1" >>confdefs.h
+printf "%s\n" "#define WITH_DECIMAL_CONTEXTVAR 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_decimal_contextvar" >&5
-$as_echo "$with_decimal_contextvar" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_decimal_contextvar" >&5
+printf "%s\n" "$with_decimal_contextvar" >&6; }
 
 # Check for libmpdec machine flavor
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for decimal libmpdec machine" >&5
-$as_echo_n "checking for decimal libmpdec machine... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for decimal libmpdec machine" >&5
+printf %s "checking for decimal libmpdec machine... " >&6; }
 case $ac_sys_system in #(
   Darwin*) :
     libmpdec_system=Darwin ;; #(
@@ -13253,8 +14408,8 @@ esac
         libmpdec_machine=ansi32
     fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libmpdec_machine" >&5
-$as_echo "$libmpdec_machine" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libmpdec_machine" >&5
+printf "%s\n" "$libmpdec_machine" >&6; }
 
 case $libmpdec_machine in #(
   x64) :
@@ -13291,286 +14446,10 @@ fi
 
 
 
-pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBNSL" >&5
-$as_echo_n "checking for LIBNSL... " >&6; }
-
-if test -n "$LIBNSL_CFLAGS"; then
-    pkg_cv_LIBNSL_CFLAGS="$LIBNSL_CFLAGS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libnsl\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "libnsl") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_LIBNSL_CFLAGS=`$PKG_CONFIG --cflags "libnsl" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
-fi
-if test -n "$LIBNSL_LIBS"; then
-    pkg_cv_LIBNSL_LIBS="$LIBNSL_LIBS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libnsl\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "libnsl") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_LIBNSL_LIBS=`$PKG_CONFIG --libs "libnsl" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
-fi
-
-
-
-if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
-        _pkg_short_errors_supported=yes
-else
-        _pkg_short_errors_supported=no
-fi
-        if test $_pkg_short_errors_supported = yes; then
-	        LIBNSL_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libnsl" 2>&1`
-        else
-	        LIBNSL_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libnsl" 2>&1`
-        fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$LIBNSL_PKG_ERRORS" >&5
-
-
-  LIBNSL_CFLAGS=${LIBNSL_CFLAGS-""}
-  save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing yp_match" >&5
-$as_echo_n "checking for library containing yp_match... " >&6; }
-if ${ac_cv_search_yp_match+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char yp_match ();
-int
-main ()
-{
-return yp_match ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' nsl; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_yp_match=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_yp_match+:} false; then :
-  break
-fi
-done
-if ${ac_cv_search_yp_match+:} false; then :
-
-else
-  ac_cv_search_yp_match=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_yp_match" >&5
-$as_echo "$ac_cv_search_yp_match" >&6; }
-ac_res=$ac_cv_search_yp_match
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-  have_nis=yes
-else
-  have_nis=no
-fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-  case $ac_cv_search_yp_match in #(
-  no) :
-    libnsl="" ;; #(
-  "none required") :
-    libnsl="" ;; #(
-  *) :
-    libnsl="$ac_cv_search_yp_match"
-   ;;
-esac
-  LIBNSL_LIBS=${LIBNSL_LIBS-$libnsl}
-
-elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-  LIBNSL_CFLAGS=${LIBNSL_CFLAGS-""}
-  save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing yp_match" >&5
-$as_echo_n "checking for library containing yp_match... " >&6; }
-if ${ac_cv_search_yp_match+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char yp_match ();
-int
-main ()
-{
-return yp_match ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' nsl; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_yp_match=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_yp_match+:} false; then :
-  break
-fi
-done
-if ${ac_cv_search_yp_match+:} false; then :
-
-else
-  ac_cv_search_yp_match=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_yp_match" >&5
-$as_echo "$ac_cv_search_yp_match" >&6; }
-ac_res=$ac_cv_search_yp_match
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-  have_nis=yes
-else
-  have_nis=no
-fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-  case $ac_cv_search_yp_match in #(
-  no) :
-    libnsl="" ;; #(
-  "none required") :
-    libnsl="" ;; #(
-  *) :
-    libnsl="$ac_cv_search_yp_match"
-   ;;
-esac
-  LIBNSL_LIBS=${LIBNSL_LIBS-$libnsl}
-
-else
-	LIBNSL_CFLAGS=$pkg_cv_LIBNSL_CFLAGS
-	LIBNSL_LIBS=$pkg_cv_LIBNSL_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-	have_nis=yes
-fi
-
-if test "x$have_nis" = xyes; then :
-
-  save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-    CPPFLAGS="$CPPFLAGS $LIBNSL_CFLAGS"
-    for ac_header in rpc/rpc.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "rpc/rpc.h" "ac_cv_header_rpc_rpc_h" "$ac_includes_default"
-if test "x$ac_cv_header_rpc_rpc_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_RPC_RPC_H 1
-_ACEOF
-
-fi
-
-done
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-fi
-
-case $ac_sys_system in #(
-  NetBSD*) :
-    OSSAUDIODEV_LIBS="-lossaudio" ;; #(
-  *) :
-    OSSAUDIODEV_LIBS=""
- ;;
-esac
-
-
 
 
-  if test "$ac_sys_system" = "Emscripten" -a -z "$LIBSQLITE3_CFLAGS" -a -z "$LIBSQLITE3_LIBS"; then :
+  if test "$ac_sys_system" = "Emscripten" -a -z "$LIBSQLITE3_CFLAGS" -a -z "$LIBSQLITE3_LIBS"
+then :
 
     LIBSQLITE3_CFLAGS="-sUSE_SQLITE3"
     LIBSQLITE3_LIBS="-sUSE_SQLITE3"
@@ -13582,19 +14461,19 @@ fi
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBSQLITE3" >&5
-$as_echo_n "checking for LIBSQLITE3... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3 >= 3.15.2" >&5
+printf %s "checking for sqlite3 >= 3.15.2... " >&6; }
 
 if test -n "$LIBSQLITE3_CFLAGS"; then
     pkg_cv_LIBSQLITE3_CFLAGS="$LIBSQLITE3_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"sqlite3 >= 3.7.15\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "sqlite3 >= 3.7.15") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"sqlite3 >= 3.15.2\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "sqlite3 >= 3.15.2") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_LIBSQLITE3_CFLAGS=`$PKG_CONFIG --cflags "sqlite3 >= 3.7.15" 2>/dev/null`
+  pkg_cv_LIBSQLITE3_CFLAGS=`$PKG_CONFIG --cflags "sqlite3 >= 3.15.2" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -13606,12 +14485,12 @@ if test -n "$LIBSQLITE3_LIBS"; then
     pkg_cv_LIBSQLITE3_LIBS="$LIBSQLITE3_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"sqlite3 >= 3.7.15\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "sqlite3 >= 3.7.15") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"sqlite3 >= 3.15.2\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "sqlite3 >= 3.15.2") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_LIBSQLITE3_LIBS=`$PKG_CONFIG --libs "sqlite3 >= 3.7.15" 2>/dev/null`
+  pkg_cv_LIBSQLITE3_LIBS=`$PKG_CONFIG --libs "sqlite3 >= 3.15.2" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -13623,8 +14502,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -13632,9 +14511,9 @@ else
         _pkg_short_errors_supported=no
 fi
         if test $_pkg_short_errors_supported = yes; then
-	        LIBSQLITE3_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "sqlite3 >= 3.7.15" 2>&1`
+	        LIBSQLITE3_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "sqlite3 >= 3.15.2" 2>&1`
         else
-	        LIBSQLITE3_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "sqlite3 >= 3.7.15" 2>&1`
+	        LIBSQLITE3_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "sqlite3 >= 3.15.2" 2>&1`
         fi
 	# Put the nasty error message in config.log where it belongs
 	echo "$LIBSQLITE3_PKG_ERRORS" >&5
@@ -13645,8 +14524,8 @@ fi
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
     LIBSQLITE3_CFLAGS=${LIBSQLITE3_CFLAGS-""}
     LIBSQLITE3_LIBS=${LIBSQLITE3_LIBS-"-lsqlite3"}
@@ -13655,8 +14534,8 @@ $as_echo "no" >&6; }
 else
 	LIBSQLITE3_CFLAGS=$pkg_cv_LIBSQLITE3_CFLAGS
 	LIBSQLITE3_LIBS=$pkg_cv_LIBSQLITE3_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
 fi
 as_fn_append LIBSQLITE3_CFLAGS ' -I$(srcdir)/Modules/_sqlite'
@@ -13672,8 +14551,9 @@ save_LIBS=$LIBS
   CPPFLAGS="$CPPFLAGS $LIBSQLITE3_CFLAGS"
   LDFLAGS="$LIBSQLITE3_LIBS $LDFLAGS"
 
-  ac_fn_c_check_header_mongrel "$LINENO" "sqlite3.h" "ac_cv_header_sqlite3_h" "$ac_includes_default"
-if test "x$ac_cv_header_sqlite3_h" = xyes; then :
+  ac_fn_c_check_header_compile "$LINENO" "sqlite3.h" "ac_cv_header_sqlite3_h" "$ac_includes_default"
+if test "x$ac_cv_header_sqlite3_h" = xyes
+then :
 
     have_sqlite3=yes
 
@@ -13682,12 +14562,12 @@ if test "x$ac_cv_header_sqlite3_h" = xyes; then :
 
 
         #include <sqlite3.h>
-        #if SQLITE_VERSION_NUMBER < 3007015
-        #  error "SQLite 3.7.15 or higher required"
+        #if SQLITE_VERSION_NUMBER < 3015002
+        #  error "SQLite 3.15.2 or higher required"
         #endif
 
 int
-main ()
+main (void)
 {
 
   ;
@@ -13695,15 +14575,17 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
       have_supported_sqlite3=yes
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_bind_double in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_bind_double in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_bind_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_bind_double in -lsqlite3" >&5
+printf %s "checking for sqlite3_bind_double in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_bind_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -13712,37 +14594,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_bind_double ();
 int
-main ()
+main (void)
 {
 return sqlite3_bind_double ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_bind_double=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_bind_double=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_bind_double" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_bind_double" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_bind_double" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_bind_double" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_bind_double" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_bind_double" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -13750,11 +14629,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_column_decltype in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_column_decltype in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_column_decltype+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_column_decltype in -lsqlite3" >&5
+printf %s "checking for sqlite3_column_decltype in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_column_decltype+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -13763,37 +14643,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_column_decltype ();
 int
-main ()
+main (void)
 {
 return sqlite3_column_decltype ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_column_decltype=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_column_decltype=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_column_decltype" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_column_decltype" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_column_decltype" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_column_decltype" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_column_decltype" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_column_decltype" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -13801,11 +14678,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_column_double in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_column_double in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_column_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_column_double in -lsqlite3" >&5
+printf %s "checking for sqlite3_column_double in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_column_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -13814,37 +14692,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_column_double ();
 int
-main ()
+main (void)
 {
 return sqlite3_column_double ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_column_double=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_column_double=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_column_double" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_column_double" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_column_double" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_column_double" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_column_double" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_column_double" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -13852,11 +14727,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_complete in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_complete in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_complete+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_complete in -lsqlite3" >&5
+printf %s "checking for sqlite3_complete in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_complete+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -13865,37 +14741,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_complete ();
 int
-main ()
+main (void)
 {
 return sqlite3_complete ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_complete=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_complete=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_complete" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_complete" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_complete" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_complete" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_complete" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_complete" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -13903,11 +14776,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_progress_handler in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_progress_handler in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_progress_handler+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_progress_handler in -lsqlite3" >&5
+printf %s "checking for sqlite3_progress_handler in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_progress_handler+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -13916,37 +14790,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_progress_handler ();
 int
-main ()
+main (void)
 {
 return sqlite3_progress_handler ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_progress_handler=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_progress_handler=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_progress_handler" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_progress_handler" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_progress_handler" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_progress_handler" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_progress_handler" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_progress_handler" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -13954,11 +14825,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_result_double in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_result_double in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_result_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_result_double in -lsqlite3" >&5
+printf %s "checking for sqlite3_result_double in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_result_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -13967,37 +14839,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_result_double ();
 int
-main ()
+main (void)
 {
 return sqlite3_result_double ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_result_double=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_result_double=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_result_double" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_result_double" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_result_double" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_result_double" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_result_double" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_result_double" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -14005,11 +14874,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_set_authorizer in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_set_authorizer in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_set_authorizer+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_set_authorizer in -lsqlite3" >&5
+printf %s "checking for sqlite3_set_authorizer in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_set_authorizer+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14018,37 +14888,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_set_authorizer ();
 int
-main ()
+main (void)
 {
 return sqlite3_set_authorizer ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_set_authorizer=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_set_authorizer=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_set_authorizer" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_set_authorizer" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_set_authorizer" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_set_authorizer" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_set_authorizer" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_set_authorizer" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -14056,11 +14923,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_trace_v2 in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_trace_v2 in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_trace_v2+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_trace_v2 in -lsqlite3" >&5
+printf %s "checking for sqlite3_trace_v2 in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_trace_v2+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14069,45 +14937,43 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_trace_v2 ();
 int
-main ()
+main (void)
 {
 return sqlite3_trace_v2 ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_trace_v2=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_trace_v2=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_trace_v2" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_trace_v2" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_trace_v2" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_trace_v2" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_trace_v2" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_trace_v2" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_trace in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_trace in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_trace+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_trace in -lsqlite3" >&5
+printf %s "checking for sqlite3_trace in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_trace+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14116,37 +14982,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_trace ();
 int
-main ()
+main (void)
 {
 return sqlite3_trace ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_trace=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_trace=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_trace" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_trace" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_trace" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_trace" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_trace" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_trace" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
@@ -14159,11 +15022,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_value_double in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_value_double in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_value_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_value_double in -lsqlite3" >&5
+printf %s "checking for sqlite3_value_double in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_value_double+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14172,48 +15036,46 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_value_double ();
 int
-main ()
+main (void)
 {
 return sqlite3_value_double ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_value_double=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_value_double=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_value_double" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_value_double" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_value_double" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBSQLITE3 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_value_double" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_value_double" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_value_double" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSQLITE3 1" >>confdefs.h
 
   LIBS="-lsqlite3 $LIBS"
 
-else
+else $as_nop
 
     have_supported_sqlite3=no
 
 fi
 
 
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_load_extension in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_load_extension in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_load_extension+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_load_extension in -lsqlite3" >&5
+printf %s "checking for sqlite3_load_extension in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_load_extension+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14222,41 +15084,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_load_extension ();
 int
-main ()
+main (void)
 {
 return sqlite3_load_extension ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_load_extension=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_load_extension=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_load_extension" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_load_extension" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_load_extension" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_load_extension" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_load_extension" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_load_extension" = xyes
+then :
   have_sqlite3_load_extension=yes
-else
+else $as_nop
   have_sqlite3_load_extension=no
 
 fi
 
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqlite3_serialize in -lsqlite3" >&5
-$as_echo_n "checking for sqlite3_serialize in -lsqlite3... " >&6; }
-if ${ac_cv_lib_sqlite3_sqlite3_serialize+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sqlite3_serialize in -lsqlite3" >&5
+printf %s "checking for sqlite3_serialize in -lsqlite3... " >&6; }
+if test ${ac_cv_lib_sqlite3_sqlite3_serialize+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lsqlite3  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14265,49 +15127,47 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char sqlite3_serialize ();
 int
-main ()
+main (void)
 {
 return sqlite3_serialize ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_sqlite3_sqlite3_serialize=yes
-else
+else $as_nop
   ac_cv_lib_sqlite3_sqlite3_serialize=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_serialize" >&5
-$as_echo "$ac_cv_lib_sqlite3_sqlite3_serialize" >&6; }
-if test "x$ac_cv_lib_sqlite3_sqlite3_serialize" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sqlite3_sqlite3_serialize" >&5
+printf "%s\n" "$ac_cv_lib_sqlite3_sqlite3_serialize" >&6; }
+if test "x$ac_cv_lib_sqlite3_sqlite3_serialize" = xyes
+then :
 
 
-$as_echo "#define PY_SQLITE_HAVE_SERIALIZE 1" >>confdefs.h
+printf "%s\n" "#define PY_SQLITE_HAVE_SERIALIZE 1" >>confdefs.h
 
 
 fi
 
 
-else
+else $as_nop
 
       have_supported_sqlite3=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
 
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -14315,32 +15175,34 @@ LIBS=$save_LIBS
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-loadable-sqlite-extensions" >&5
-$as_echo_n "checking for --enable-loadable-sqlite-extensions... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-loadable-sqlite-extensions" >&5
+printf %s "checking for --enable-loadable-sqlite-extensions... " >&6; }
 # Check whether --enable-loadable-sqlite-extensions was given.
-if test "${enable_loadable_sqlite_extensions+set}" = set; then :
+if test ${enable_loadable_sqlite_extensions+y}
+then :
   enableval=$enable_loadable_sqlite_extensions;
-    if test "x$have_sqlite3_load_extension" = xno; then :
+    if test "x$have_sqlite3_load_extension" = xno
+then :
 
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: n/a" >&5
-$as_echo "n/a" >&6; }
-      { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your version of SQLite does not support loadable extensions" >&5
-$as_echo "$as_me: WARNING: Your version of SQLite does not support loadable extensions" >&2;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: n/a" >&5
+printf "%s\n" "n/a" >&6; }
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Your version of SQLite does not support loadable extensions" >&5
+printf "%s\n" "$as_me: WARNING: Your version of SQLite does not support loadable extensions" >&2;}
 
-else
+else $as_nop
 
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-$as_echo "#define PY_SQLITE_ENABLE_LOAD_EXTENSION 1" >>confdefs.h
+printf "%s\n" "#define PY_SQLITE_ENABLE_LOAD_EXTENSION 1" >>confdefs.h
 
 
 fi
 
-else
+else $as_nop
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 
 fi
@@ -14355,25 +15217,25 @@ for _QUERY in \
   "tcl85 >= 8.5.12 tk85 >= 8.5.12" \
 ; do
   if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\$_QUERY\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\$_QUERY\""; } >&5
   ($PKG_CONFIG --exists --print-errors "$_QUERY") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for TCLTK" >&5
-$as_echo_n "checking for TCLTK... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $_QUERY" >&5
+printf %s "checking for $_QUERY... " >&6; }
 
 if test -n "$TCLTK_CFLAGS"; then
     pkg_cv_TCLTK_CFLAGS="$TCLTK_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\$_QUERY\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\$_QUERY\""; } >&5
   ($PKG_CONFIG --exists --print-errors "$_QUERY") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_TCLTK_CFLAGS=`$PKG_CONFIG --cflags "$_QUERY" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -14387,10 +15249,10 @@ if test -n "$TCLTK_LIBS"; then
     pkg_cv_TCLTK_LIBS="$TCLTK_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\$_QUERY\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\$_QUERY\""; } >&5
   ($PKG_CONFIG --exists --print-errors "$_QUERY") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_TCLTK_LIBS=`$PKG_CONFIG --libs "$_QUERY" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -14404,8 +15266,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -14422,24 +15284,26 @@ fi
 
 	found_tcltk=no
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 	found_tcltk=no
 else
 	TCLTK_CFLAGS=$pkg_cv_TCLTK_CFLAGS
 	TCLTK_LIBS=$pkg_cv_TCLTK_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	found_tcltk=yes
 fi
 
 fi
-  if test "x$found_tcltk" = xyes; then :
+  if test "x$found_tcltk" = xyes
+then :
   break
 fi
 done
 
-if test "x$found_tcltk" = xno; then :
+if test "x$found_tcltk" = xno
+then :
 
   TCLTK_CFLAGS=${TCLTK_CFLAGS-""}
   TCLTK_LIBS=${TCLTK_LIBS-""}
@@ -14450,25 +15314,25 @@ case $ac_sys_system in #(
   FreeBSD*) :
 
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"x11\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"x11\""; } >&5
   ($PKG_CONFIG --exists --print-errors "x11") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for X11" >&5
-$as_echo_n "checking for X11... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for x11" >&5
+printf %s "checking for x11... " >&6; }
 
 if test -n "$X11_CFLAGS"; then
     pkg_cv_X11_CFLAGS="$X11_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"x11\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"x11\""; } >&5
   ($PKG_CONFIG --exists --print-errors "x11") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_X11_CFLAGS=`$PKG_CONFIG --cflags "x11" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -14482,10 +15346,10 @@ if test -n "$X11_LIBS"; then
     pkg_cv_X11_LIBS="$X11_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"x11\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"x11\""; } >&5
   ($PKG_CONFIG --exists --print-errors "x11") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_X11_LIBS=`$PKG_CONFIG --libs "x11" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -14499,8 +15363,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -14526,10 +15390,10 @@ Alternatively, you may set the environment variables X11_CFLAGS
 and X11_LIBS to avoid the need to call pkg-config.
 See the pkg-config man page for more details." "$LINENO" 5
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "The pkg-config script could not be found or is too old.  Make sure it
 is in your PATH or set the PKG_CONFIG environment variable to the full
 path to pkg-config.
@@ -14543,8 +15407,8 @@ See \`config.log' for more details" "$LINENO" 5; }
 else
 	X11_CFLAGS=$pkg_cv_X11_CFLAGS
 	X11_LIBS=$pkg_cv_X11_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
         TCLTK_CFLAGS="$TCLTK_CFLAGS $X11_CFLAGS"
         TCLTK_LIBS="$TCLTK_LIBS $X11_LIBS"
@@ -14590,7 +15454,7 @@ save_LIBS=$LIBS
       #endif
 
 int
-main ()
+main (void)
 {
 
       void *x1 = Tcl_Init;
@@ -14601,17 +15465,18 @@ main ()
 }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
 
     have_tcltk=yes
                 as_fn_append TCLTK_CFLAGS " -Wno-strict-prototypes -DWITH_APPINIT=1"
 
-else
+else $as_nop
 
     have_tcltk=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 CFLAGS=$save_CFLAGS
@@ -14631,19 +15496,19 @@ save_LIBS=$LIBS
 
   CPPFLAGS="$CPPFLAGS $GDBM_CFLAGS"
   LDFLAGS="$GDBM_LIBS $LDFLAGS"
-  for ac_header in gdbm.h
+         for ac_header in gdbm.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "gdbm.h" "ac_cv_header_gdbm_h" "$ac_includes_default"
-if test "x$ac_cv_header_gdbm_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_GDBM_H 1
-_ACEOF
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gdbm_open in -lgdbm" >&5
-$as_echo_n "checking for gdbm_open in -lgdbm... " >&6; }
-if ${ac_cv_lib_gdbm_gdbm_open+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "gdbm.h" "ac_cv_header_gdbm_h" "$ac_includes_default"
+if test "x$ac_cv_header_gdbm_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_GDBM_H 1" >>confdefs.h
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gdbm_open in -lgdbm" >&5
+printf %s "checking for gdbm_open in -lgdbm... " >&6; }
+if test ${ac_cv_lib_gdbm_gdbm_open+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lgdbm  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14652,46 +15517,44 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char gdbm_open ();
 int
-main ()
+main (void)
 {
 return gdbm_open ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_gdbm_gdbm_open=yes
-else
+else $as_nop
   ac_cv_lib_gdbm_gdbm_open=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_gdbm_gdbm_open" >&5
-$as_echo "$ac_cv_lib_gdbm_gdbm_open" >&6; }
-if test "x$ac_cv_lib_gdbm_gdbm_open" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_gdbm_gdbm_open" >&5
+printf "%s\n" "$ac_cv_lib_gdbm_gdbm_open" >&6; }
+if test "x$ac_cv_lib_gdbm_gdbm_open" = xyes
+then :
 
       have_gdbm=yes
       GDBM_LIBS=${GDBM_LIBS-"-lgdbm"}
 
-else
+else $as_nop
   have_gdbm=no
 fi
 
 
-else
+else $as_nop
   have_gdbm=no
 fi
 
 done
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -14699,13 +15562,12 @@ LIBS=$save_LIBS
 
 
 
-for ac_header in ndbm.h
+       for ac_header in ndbm.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "ndbm.h" "ac_cv_header_ndbm_h" "$ac_includes_default"
-if test "x$ac_cv_header_ndbm_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_NDBM_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "ndbm.h" "ac_cv_header_ndbm_h" "$ac_includes_default"
+if test "x$ac_cv_header_ndbm_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NDBM_H 1" >>confdefs.h
 
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -14713,11 +15575,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dbm_open" >&5
-$as_echo_n "checking for library containing dbm_open... " >&6; }
-if ${ac_cv_search_dbm_open+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing dbm_open" >&5
+printf %s "checking for library containing dbm_open... " >&6; }
+if test ${ac_cv_search_dbm_open+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14725,46 +15588,48 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char dbm_open ();
 int
-main ()
+main (void)
 {
 return dbm_open ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' ndbm gdbm_compat; do
+for ac_lib in '' ndbm gdbm_compat
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
+  if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_search_dbm_open=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_dbm_open+:} false; then :
+  if test ${ac_cv_search_dbm_open+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_dbm_open+:} false; then :
+if test ${ac_cv_search_dbm_open+y}
+then :
 
-else
+else $as_nop
   ac_cv_search_dbm_open=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dbm_open" >&5
-$as_echo "$ac_cv_search_dbm_open" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dbm_open" >&5
+printf "%s\n" "$ac_cv_search_dbm_open" >&6; }
 ac_res=$ac_cv_search_dbm_open
-if test "$ac_res" != no; then :
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
 fi
@@ -14781,9 +15646,8 @@ fi
 
 done
 
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ndbm presence and linker args" >&5
-$as_echo_n "checking for ndbm presence and linker args... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ndbm presence and linker args" >&5
+printf %s "checking for ndbm presence and linker args... " >&6; }
 case $ac_cv_search_dbm_open in #(
   *ndbm*|*gdbm_compat*) :
 
@@ -14801,55 +15665,59 @@ case $ac_cv_search_dbm_open in #(
   *) :
      ;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_ndbm ($dbm_ndbm)" >&5
-$as_echo "$have_ndbm ($dbm_ndbm)" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_ndbm ($dbm_ndbm)" >&5
+printf "%s\n" "$have_ndbm ($dbm_ndbm)" >&6; }
 
 { ac_cv_header_gdbm_ndbm_h=; unset ac_cv_header_gdbm_ndbm_h;}
-if ${ac_cv_header_gdbm_slash_ndbm_h+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-  ac_fn_c_check_header_mongrel "$LINENO" "gdbm/ndbm.h" "ac_cv_header_gdbm_ndbm_h" "$ac_includes_default"
-if test "x$ac_cv_header_gdbm_ndbm_h" = xyes; then :
+if test ${ac_cv_header_gdbm_slash_ndbm_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  ac_fn_c_check_header_compile "$LINENO" "gdbm/ndbm.h" "ac_cv_header_gdbm_ndbm_h" "$ac_includes_default"
+if test "x$ac_cv_header_gdbm_ndbm_h" = xyes
+then :
   ac_cv_header_gdbm_slash_ndbm_h=yes
-else
+else $as_nop
   ac_cv_header_gdbm_slash_ndbm_h=no
 
 fi
 
 
-
 fi
 
-if test "x$ac_cv_header_gdbm_slash_ndbm_h" = xyes; then :
+if test "x$ac_cv_header_gdbm_slash_ndbm_h" = xyes
+then :
 
 
-$as_echo "#define HAVE_GDBM_NDBM_H 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GDBM_NDBM_H 1" >>confdefs.h
 
 
 fi
 
 { ac_cv_header_gdbm_ndbm_h=; unset ac_cv_header_gdbm_ndbm_h;}
-if ${ac_cv_header_gdbm_dash_ndbm_h+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-  ac_fn_c_check_header_mongrel "$LINENO" "gdbm-ndbm.h" "ac_cv_header_gdbm_ndbm_h" "$ac_includes_default"
-if test "x$ac_cv_header_gdbm_ndbm_h" = xyes; then :
+if test ${ac_cv_header_gdbm_dash_ndbm_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  ac_fn_c_check_header_compile "$LINENO" "gdbm-ndbm.h" "ac_cv_header_gdbm_ndbm_h" "$ac_includes_default"
+if test "x$ac_cv_header_gdbm_ndbm_h" = xyes
+then :
   ac_cv_header_gdbm_dash_ndbm_h=yes
-else
+else $as_nop
   ac_cv_header_gdbm_dash_ndbm_h=no
 
 fi
 
 
-
 fi
 
-if test "x$ac_cv_header_gdbm_dash_ndbm_h" = xyes; then :
+if test "x$ac_cv_header_gdbm_dash_ndbm_h" = xyes
+then :
 
 
-$as_echo "#define HAVE_GDBM_DASH_NDBM_H 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GDBM_DASH_NDBM_H 1" >>confdefs.h
 
 
 fi
@@ -14863,11 +15731,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dbm_open" >&5
-$as_echo_n "checking for library containing dbm_open... " >&6; }
-if ${ac_cv_search_dbm_open+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing dbm_open" >&5
+printf %s "checking for library containing dbm_open... " >&6; }
+if test ${ac_cv_search_dbm_open+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14875,49 +15744,51 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char dbm_open ();
 int
-main ()
+main (void)
 {
 return dbm_open ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' gdbm_compat; do
+for ac_lib in '' gdbm_compat
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
+  if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_search_dbm_open=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_dbm_open+:} false; then :
+  if test ${ac_cv_search_dbm_open+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_dbm_open+:} false; then :
+if test ${ac_cv_search_dbm_open+y}
+then :
 
-else
+else $as_nop
   ac_cv_search_dbm_open=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dbm_open" >&5
-$as_echo "$ac_cv_search_dbm_open" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dbm_open" >&5
+printf "%s\n" "$ac_cv_search_dbm_open" >&6; }
 ac_res=$ac_cv_search_dbm_open
-if test "$ac_res" != no; then :
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
   have_gdbm_compat=yes
-else
+else $as_nop
   have_gdbm_compat=no
 fi
 
@@ -14932,19 +15803,19 @@ fi
 
 # Check for libdb >= 5 with dbm_open()
 # db.h re-defines the name of the function
-for ac_header in db.h
+       for ac_header in db.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "db.h" "ac_cv_header_db_h" "$ac_includes_default"
-if test "x$ac_cv_header_db_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DB_H 1
-_ACEOF
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libdb" >&5
-$as_echo_n "checking for libdb... " >&6; }
-if ${ac_cv_have_libdb+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "db.h" "ac_cv_header_db_h" "$ac_includes_default"
+if test "x$ac_cv_header_db_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_DB_H 1" >>confdefs.h
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libdb" >&5
+printf %s "checking for libdb... " >&6; }
+if test ${ac_cv_have_libdb+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -14963,7 +15834,7 @@ save_LIBS=$LIBS
         #endif
 
 int
-main ()
+main (void)
 {
 DBM *dbm = dbm_open(NULL, 0, 0)
   ;
@@ -14971,12 +15842,13 @@ DBM *dbm = dbm_open(NULL, 0, 0)
 }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_have_libdb=yes
-else
+else $as_nop
   ac_cv_have_libdb=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 CFLAGS=$save_CFLAGS
@@ -14987,12 +15859,13 @@ LIBS=$save_LIBS
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_libdb" >&5
-$as_echo "$ac_cv_have_libdb" >&6; }
-  if test "x$ac_cv_have_libdb" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_libdb" >&5
+printf "%s\n" "$ac_cv_have_libdb" >&6; }
+  if test "x$ac_cv_have_libdb" = xyes
+then :
 
 
-$as_echo "#define HAVE_LIBDB 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LIBDB 1" >>confdefs.h
 
 
 fi
@@ -15001,15 +15874,15 @@ fi
 
 done
 
-
 # Check for --with-dbmliborder
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-dbmliborder" >&5
-$as_echo_n "checking for --with-dbmliborder... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-dbmliborder" >&5
+printf %s "checking for --with-dbmliborder... " >&6; }
 
 # Check whether --with-dbmliborder was given.
-if test "${with_dbmliborder+set}" = set; then :
+if test ${with_dbmliborder+y}
+then :
   withval=$with_dbmliborder;
-else
+else $as_nop
   with_dbmliborder=gdbm:ndbm:bdb
 fi
 
@@ -15031,16 +15904,17 @@ for db in $with_dbmliborder; do
 esac
 done
 IFS=$as_save_IFS
-if test "x$with_dbmliborder" = xerror; then :
+if test "x$with_dbmliborder" = xerror
+then :
 
   as_fn_error $? "proper usage is --with-dbmliborder=db1:db2:... (gdbm:ndbm:bdb)" "$LINENO" 5
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_dbmliborder" >&5
-$as_echo "$with_dbmliborder" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_dbmliborder" >&5
+printf "%s\n" "$with_dbmliborder" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for _dbm module CFLAGS and LIBS" >&5
-$as_echo_n "checking for _dbm module CFLAGS and LIBS... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for _dbm module CFLAGS and LIBS" >&5
+printf %s "checking for _dbm module CFLAGS and LIBS... " >&6; }
 have_dbm=no
 as_save_IFS=$IFS
 IFS=:
@@ -15073,8 +15947,8 @@ for db in $with_dbmliborder; do
   esac
 done
 IFS=$as_save_IFS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $DBM_CFLAGS $DBM_LIBS" >&5
-$as_echo "$DBM_CFLAGS $DBM_LIBS" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DBM_CFLAGS $DBM_LIBS" >&5
+printf "%s\n" "$DBM_CFLAGS $DBM_LIBS" >&6; }
 
 # Templates for things AC_DEFINEd more than once.
 # For a single AC_DEFINE, no template is needed.
@@ -15083,7 +15957,7 @@ $as_echo "$DBM_CFLAGS $DBM_LIBS" >&6; }
 if test "$ac_cv_pthread_is_default" = yes
 then
     # Defining _REENTRANT on system with POSIX threads should not hurt.
-    $as_echo "#define _REENTRANT 1" >>confdefs.h
+    printf "%s\n" "#define _REENTRANT 1" >>confdefs.h
 
     posix_threads=yes
     if test "$ac_sys_system" = "SunOS"; then
@@ -15118,8 +15992,8 @@ else
     # According to the POSIX spec, a pthreads implementation must
     # define _POSIX_THREADS in unistd.h. Some apparently don't
     # (e.g. gnu pth with pthread emulation)
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _POSIX_THREADS in unistd.h" >&5
-$as_echo_n "checking for _POSIX_THREADS in unistd.h... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for _POSIX_THREADS in unistd.h" >&5
+printf %s "checking for _POSIX_THREADS in unistd.h... " >&6; }
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -15130,25 +16004,26 @@ yes
 
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   unistd_defines_pthreads=yes
-else
+else $as_nop
   unistd_defines_pthreads=no
 fi
-rm -f conftest*
+rm -rf conftest*
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $unistd_defines_pthreads" >&5
-$as_echo "$unistd_defines_pthreads" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $unistd_defines_pthreads" >&5
+printf "%s\n" "$unistd_defines_pthreads" >&6; }
 
-    $as_echo "#define _REENTRANT 1" >>confdefs.h
+    printf "%s\n" "#define _REENTRANT 1" >>confdefs.h
 
     # Just looking for pthread_create in libpthread is not enough:
     # on HP/UX, pthread.h renames pthread_create to a different symbol name.
     # So we really have to include pthread.h, and then link.
     _libs=$LIBS
     LIBS="$LIBS -lpthread"
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthread" >&5
-$as_echo_n "checking for pthread_create in -lpthread... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthread" >&5
+printf %s "checking for pthread_create in -lpthread... " >&6; }
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -15158,7 +16033,7 @@ $as_echo_n "checking for pthread_create in -lpthread... " >&6; }
 
 void * start_routine (void *arg) { exit (0); }
 int
-main ()
+main (void)
 {
 
 pthread_create (NULL, NULL, start_routine, NULL)
@@ -15166,27 +16041,30 @@ pthread_create (NULL, NULL, start_routine, NULL)
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
     posix_threads=yes
 
-else
+else $as_nop
 
     LIBS=$_libs
     ac_fn_c_check_func "$LINENO" "pthread_detach" "ac_cv_func_pthread_detach"
-if test "x$ac_cv_func_pthread_detach" = xyes; then :
+if test "x$ac_cv_func_pthread_detach" = xyes
+then :
 
     posix_threads=yes
 
-else
+else $as_nop
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthreads" >&5
-$as_echo_n "checking for pthread_create in -lpthreads... " >&6; }
-if ${ac_cv_lib_pthreads_pthread_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthreads" >&5
+printf %s "checking for pthread_create in -lpthreads... " >&6; }
+if test ${ac_cv_lib_pthreads_pthread_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lpthreads  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -15195,41 +16073,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char pthread_create ();
 int
-main ()
+main (void)
 {
 return pthread_create ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_pthreads_pthread_create=yes
-else
+else $as_nop
   ac_cv_lib_pthreads_pthread_create=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthreads_pthread_create" >&5
-$as_echo "$ac_cv_lib_pthreads_pthread_create" >&6; }
-if test "x$ac_cv_lib_pthreads_pthread_create" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthreads_pthread_create" >&5
+printf "%s\n" "$ac_cv_lib_pthreads_pthread_create" >&6; }
+if test "x$ac_cv_lib_pthreads_pthread_create" = xyes
+then :
 
     posix_threads=yes
     LIBS="$LIBS -lpthreads"
 
-else
+else $as_nop
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lc_r" >&5
-$as_echo_n "checking for pthread_create in -lc_r... " >&6; }
-if ${ac_cv_lib_c_r_pthread_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lc_r" >&5
+printf %s "checking for pthread_create in -lc_r... " >&6; }
+if test ${ac_cv_lib_c_r_pthread_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lc_r  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -15238,41 +16116,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char pthread_create ();
 int
-main ()
+main (void)
 {
 return pthread_create ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_c_r_pthread_create=yes
-else
+else $as_nop
   ac_cv_lib_c_r_pthread_create=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_r_pthread_create" >&5
-$as_echo "$ac_cv_lib_c_r_pthread_create" >&6; }
-if test "x$ac_cv_lib_c_r_pthread_create" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_r_pthread_create" >&5
+printf "%s\n" "$ac_cv_lib_c_r_pthread_create" >&6; }
+if test "x$ac_cv_lib_c_r_pthread_create" = xyes
+then :
 
     posix_threads=yes
     LIBS="$LIBS -lc_r"
 
-else
+else $as_nop
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __pthread_create_system in -lpthread" >&5
-$as_echo_n "checking for __pthread_create_system in -lpthread... " >&6; }
-if ${ac_cv_lib_pthread___pthread_create_system+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __pthread_create_system in -lpthread" >&5
+printf %s "checking for __pthread_create_system in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread___pthread_create_system+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lpthread  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -15281,41 +16159,41 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char __pthread_create_system ();
 int
-main ()
+main (void)
 {
 return __pthread_create_system ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_pthread___pthread_create_system=yes
-else
+else $as_nop
   ac_cv_lib_pthread___pthread_create_system=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread___pthread_create_system" >&5
-$as_echo "$ac_cv_lib_pthread___pthread_create_system" >&6; }
-if test "x$ac_cv_lib_pthread___pthread_create_system" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread___pthread_create_system" >&5
+printf "%s\n" "$ac_cv_lib_pthread___pthread_create_system" >&6; }
+if test "x$ac_cv_lib_pthread___pthread_create_system" = xyes
+then :
 
     posix_threads=yes
     LIBS="$LIBS -lpthread"
 
-else
+else $as_nop
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lcma" >&5
-$as_echo_n "checking for pthread_create in -lcma... " >&6; }
-if ${ac_cv_lib_cma_pthread_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lcma" >&5
+printf %s "checking for pthread_create in -lcma... " >&6; }
+if test ${ac_cv_lib_cma_pthread_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lcma  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -15324,35 +16202,34 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char pthread_create ();
 int
-main ()
+main (void)
 {
 return pthread_create ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_cma_pthread_create=yes
-else
+else $as_nop
   ac_cv_lib_cma_pthread_create=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_cma_pthread_create" >&5
-$as_echo "$ac_cv_lib_cma_pthread_create" >&6; }
-if test "x$ac_cv_lib_cma_pthread_create" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_cma_pthread_create" >&5
+printf "%s\n" "$ac_cv_lib_cma_pthread_create" >&6; }
+if test "x$ac_cv_lib_cma_pthread_create" = xyes
+then :
 
     posix_threads=yes
     LIBS="$LIBS -lcma"
 
-else
+else $as_nop
 
     case $ac_sys_system in #(
   WASI) :
@@ -15373,14 +16250,15 @@ fi
 fi
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for usconfig in -lmpc" >&5
-$as_echo_n "checking for usconfig in -lmpc... " >&6; }
-if ${ac_cv_lib_mpc_usconfig+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for usconfig in -lmpc" >&5
+printf %s "checking for usconfig in -lmpc... " >&6; }
+if test ${ac_cv_lib_mpc_usconfig+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lmpc  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -15389,30 +16267,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char usconfig ();
 int
-main ()
+main (void)
 {
 return usconfig ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_mpc_usconfig=yes
-else
+else $as_nop
   ac_cv_lib_mpc_usconfig=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_mpc_usconfig" >&5
-$as_echo "$ac_cv_lib_mpc_usconfig" >&6; }
-if test "x$ac_cv_lib_mpc_usconfig" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_mpc_usconfig" >&5
+printf "%s\n" "$ac_cv_lib_mpc_usconfig" >&6; }
+if test "x$ac_cv_lib_mpc_usconfig" = xyes
+then :
 
     LIBS="$LIBS -lmpc"
 
@@ -15424,38 +16301,40 @@ fi
 if test "$posix_threads" = "yes"; then
       if test "$unistd_defines_pthreads" = "no"; then
 
-$as_echo "#define _POSIX_THREADS 1" >>confdefs.h
+printf "%s\n" "#define _POSIX_THREADS 1" >>confdefs.h
 
       fi
 
       # Bug 662787: Using semaphores causes unexplicable hangs on Solaris 8.
       case  $ac_sys_system/$ac_sys_release in
       SunOS/5.6)
-$as_echo "#define HAVE_PTHREAD_DESTRUCTOR 1" >>confdefs.h
+printf "%s\n" "#define HAVE_PTHREAD_DESTRUCTOR 1" >>confdefs.h
 
 		       ;;
       SunOS/5.8)
-$as_echo "#define HAVE_BROKEN_POSIX_SEMAPHORES 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_POSIX_SEMAPHORES 1" >>confdefs.h
 
 		       ;;
       AIX/*)
-$as_echo "#define HAVE_BROKEN_POSIX_SEMAPHORES 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_POSIX_SEMAPHORES 1" >>confdefs.h
 
 		       ;;
       NetBSD/*)
-$as_echo "#define HAVE_BROKEN_POSIX_SEMAPHORES 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_POSIX_SEMAPHORES 1" >>confdefs.h
 
 		       ;;
       esac
 
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking if PTHREAD_SCOPE_SYSTEM is supported" >&5
-$as_echo_n "checking if PTHREAD_SCOPE_SYSTEM is supported... " >&6; }
-if ${ac_cv_pthread_system_supported+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if PTHREAD_SCOPE_SYSTEM is supported" >&5
+printf %s "checking if PTHREAD_SCOPE_SYSTEM is supported... " >&6; }
+if test ${ac_cv_pthread_system_supported+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_pthread_system_supported=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -15473,9 +16352,10 @@ else
         return (0);
       }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_pthread_system_supported=yes
-else
+else $as_nop
   ac_cv_pthread_system_supported=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -15484,71 +16364,69 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread_system_supported" >&5
-$as_echo "$ac_cv_pthread_system_supported" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pthread_system_supported" >&5
+printf "%s\n" "$ac_cv_pthread_system_supported" >&6; }
       if test "$ac_cv_pthread_system_supported" = "yes"; then
 
-$as_echo "#define PTHREAD_SYSTEM_SCHED_SUPPORTED 1" >>confdefs.h
+printf "%s\n" "#define PTHREAD_SYSTEM_SCHED_SUPPORTED 1" >>confdefs.h
 
       fi
-      for ac_func in pthread_sigmask
+
+  for ac_func in pthread_sigmask
 do :
   ac_fn_c_check_func "$LINENO" "pthread_sigmask" "ac_cv_func_pthread_sigmask"
-if test "x$ac_cv_func_pthread_sigmask" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREAD_SIGMASK 1
-_ACEOF
+if test "x$ac_cv_func_pthread_sigmask" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_SIGMASK 1" >>confdefs.h
  case $ac_sys_system in
         CYGWIN*)
 
-$as_echo "#define HAVE_BROKEN_PTHREAD_SIGMASK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_PTHREAD_SIGMASK 1" >>confdefs.h
 
             ;;
         esac
 fi
-done
 
-      for ac_func in pthread_getcpuclockid
-do :
-  ac_fn_c_check_func "$LINENO" "pthread_getcpuclockid" "ac_cv_func_pthread_getcpuclockid"
-if test "x$ac_cv_func_pthread_getcpuclockid" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREAD_GETCPUCLOCKID 1
-_ACEOF
+done
+      ac_fn_c_check_func "$LINENO" "pthread_getcpuclockid" "ac_cv_func_pthread_getcpuclockid"
+if test "x$ac_cv_func_pthread_getcpuclockid" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_GETCPUCLOCKID 1" >>confdefs.h
 
 fi
-done
 
 fi
 
-if test "x$posix_threads" = xstub; then :
+if test "x$posix_threads" = xstub
+then :
 
 
-$as_echo "#define HAVE_PTHREAD_STUBS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_PTHREAD_STUBS 1" >>confdefs.h
 
 
 fi
 
 # Check for enable-ipv6
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if --enable-ipv6 is specified" >&5
-$as_echo_n "checking if --enable-ipv6 is specified... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if --enable-ipv6 is specified" >&5
+printf %s "checking if --enable-ipv6 is specified... " >&6; }
 # Check whether --enable-ipv6 was given.
-if test "${enable_ipv6+set}" = set; then :
+if test ${enable_ipv6+y}
+then :
   enableval=$enable_ipv6;  case "$enableval" in
   no)
-       { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
        ipv6=no
        ;;
-  *)   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-       $as_echo "#define ENABLE_IPV6 1" >>confdefs.h
+  *)   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+       printf "%s\n" "#define ENABLE_IPV6 1" >>confdefs.h
 
        ipv6=yes
        ;;
   esac
-else
+else $as_nop
 
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -15556,23 +16434,24 @@ else
 #include <sys/types.h>
 #include <sys/socket.h>
 int
-main ()
+main (void)
 {
 int domain = AF_INET6;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
   ipv6=yes
 
-else
+else $as_nop
 
   ipv6=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 case $ac_sys_system in #(
   WASI) :
@@ -15582,19 +16461,19 @@ case $ac_sys_system in #(
      ;;
 esac
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ipv6" >&5
-$as_echo "$ipv6" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ipv6" >&5
+printf "%s\n" "$ipv6" >&6; }
 
 if test "$ipv6" = "yes"; then
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if RFC2553 API is available" >&5
-$as_echo_n "checking if RFC2553 API is available... " >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if RFC2553 API is available" >&5
+printf %s "checking if RFC2553 API is available... " >&6; }
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 	  #include <sys/types.h>
 #include <netinet/in.h>
 int
-main ()
+main (void)
 {
 struct sockaddr_in6 x;
 			    x.sin6_scope_id;
@@ -15603,24 +16482,25 @@ struct sockaddr_in6 x;
 }
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-	  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	  ipv6=yes
 
-else
+else $as_nop
 
-	  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 	  ipv6=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 
 if test "$ipv6" = "yes"; then
-	$as_echo "#define ENABLE_IPV6 1" >>confdefs.h
+	printf "%s\n" "#define ENABLE_IPV6 1" >>confdefs.h
 
 fi
 
@@ -15632,8 +16512,8 @@ ipv6lib=none
 ipv6trylibc=no
 
 if test "$ipv6" = "yes"; then
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking ipv6 stack type" >&5
-$as_echo_n "checking ipv6 stack type... " >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking ipv6 stack type" >&5
+printf %s "checking ipv6 stack type... " >&6; }
 	for i in inria kame linux-glibc linux-inet6 solaris toshiba v6d zeta;
 	do
 		case $i in
@@ -15647,10 +16527,11 @@ yes
 #endif
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   ipv6type=$i
 fi
-rm -f conftest*
+rm -rf conftest*
 
 			;;
 		kame)
@@ -15663,13 +16544,14 @@ yes
 #endif
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   ipv6type=$i;
 				ipv6lib=inet6
 				ipv6libdir=/usr/local/v6/lib
 				ipv6trylibc=yes
 fi
-rm -f conftest*
+rm -rf conftest*
 
 			;;
 		linux-glibc)
@@ -15682,11 +16564,12 @@ yes
 #endif
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   ipv6type=$i;
 				ipv6trylibc=yes
 fi
-rm -f conftest*
+rm -rf conftest*
 
 			;;
 		linux-inet6)
@@ -15715,12 +16598,13 @@ yes
 #endif
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib
 fi
-rm -f conftest*
+rm -rf conftest*
 
 			;;
 		v6d)
@@ -15733,13 +16617,14 @@ yes
 #endif
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   ipv6type=$i;
 				ipv6lib=v6;
 				ipv6libdir=/usr/local/v6/lib;
 				BASECFLAGS="-I/usr/local/v6/include $BASECFLAGS"
 fi
-rm -f conftest*
+rm -rf conftest*
 
 			;;
 		zeta)
@@ -15752,12 +16637,13 @@ yes
 #endif
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
+  $EGREP "yes" >/dev/null 2>&1
+then :
   ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib
 fi
-rm -f conftest*
+rm -rf conftest*
 
 			;;
 		esac
@@ -15765,22 +16651,23 @@ rm -f conftest*
 			break
 		fi
 	done
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ipv6type" >&5
-$as_echo "$ipv6type" >&6; }
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ipv6type" >&5
+printf "%s\n" "$ipv6type" >&6; }
 fi
 
 if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
 	if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
 		LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: using lib$ipv6lib" >&5
-$as_echo "$as_me: using lib$ipv6lib" >&6;}
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: using lib$ipv6lib" >&5
+printf "%s\n" "$as_me: using lib$ipv6lib" >&6;}
 	else
-    if test "x$ipv6trylibc" = xyes; then :
+    if test "x$ipv6trylibc" = xyes
+then :
 
-      { $as_echo "$as_me:${as_lineno-$LINENO}: using libc" >&5
-$as_echo "$as_me: using libc" >&6;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: using libc" >&5
+printf "%s\n" "$as_me: using libc" >&6;}
 
-else
+else $as_nop
 
       as_fn_error $? "No $ipv6lib library found; cannot continue. You need to fetch lib$ipv6lib.a from appropriate ipv6 kit and compile beforehand." "$LINENO" 5
 
@@ -15789,84 +16676,91 @@ fi
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking CAN_RAW_FD_FRAMES" >&5
-$as_echo_n "checking CAN_RAW_FD_FRAMES... " >&6; }
-if ${ac_cv_can_raw_fd_frames+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking CAN_RAW_FD_FRAMES" >&5
+printf %s "checking CAN_RAW_FD_FRAMES... " >&6; }
+if test ${ac_cv_can_raw_fd_frames+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
  /* CAN_RAW_FD_FRAMES available check */
 #include <linux/can/raw.h>
 int
-main ()
+main (void)
 {
 int can_raw_fd_frames = CAN_RAW_FD_FRAMES;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_can_raw_fd_frames=yes
-else
+else $as_nop
   ac_cv_can_raw_fd_frames=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_can_raw_fd_frames" >&5
-$as_echo "$ac_cv_can_raw_fd_frames" >&6; }
-if test "x$ac_cv_can_raw_fd_frames" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_can_raw_fd_frames" >&5
+printf "%s\n" "$ac_cv_can_raw_fd_frames" >&6; }
+if test "x$ac_cv_can_raw_fd_frames" = xyes
+then :
 
 
-$as_echo "#define HAVE_LINUX_CAN_RAW_FD_FRAMES 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LINUX_CAN_RAW_FD_FRAMES 1" >>confdefs.h
 
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CAN_RAW_JOIN_FILTERS" >&5
-$as_echo_n "checking for CAN_RAW_JOIN_FILTERS... " >&6; }
-if ${ac_cv_can_raw_join_filters+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for CAN_RAW_JOIN_FILTERS" >&5
+printf %s "checking for CAN_RAW_JOIN_FILTERS... " >&6; }
+if test ${ac_cv_can_raw_join_filters+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #include <linux/can/raw.h>
 int
-main ()
+main (void)
 {
 int can_raw_join_filters = CAN_RAW_JOIN_FILTERS;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_can_raw_join_filters=yes
-else
+else $as_nop
   ac_cv_can_raw_join_filters=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_can_raw_join_filters" >&5
-$as_echo "$ac_cv_can_raw_join_filters" >&6; }
-if test "x$ac_cv_can_raw_join_filters" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_can_raw_join_filters" >&5
+printf "%s\n" "$ac_cv_can_raw_join_filters" >&6; }
+if test "x$ac_cv_can_raw_join_filters" = xyes
+then :
 
 
-$as_echo "#define HAVE_LINUX_CAN_RAW_JOIN_FILTERS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LINUX_CAN_RAW_JOIN_FILTERS 1" >>confdefs.h
 
 
 fi
 
 # Check for --with-doc-strings
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-doc-strings" >&5
-$as_echo_n "checking for --with-doc-strings... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-doc-strings" >&5
+printf %s "checking for --with-doc-strings... " >&6; }
 
 # Check whether --with-doc-strings was given.
-if test "${with_doc_strings+set}" = set; then :
+if test ${with_doc_strings+y}
+then :
   withval=$with_doc_strings;
 fi
 
@@ -15877,18 +16771,140 @@ fi
 if test "$with_doc_strings" != "no"
 then
 
-$as_echo "#define WITH_DOC_STRINGS 1" >>confdefs.h
+printf "%s\n" "#define WITH_DOC_STRINGS 1" >>confdefs.h
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_doc_strings" >&5
+printf "%s\n" "$with_doc_strings" >&6; }
+
+# Check for stdatomic.h, required for mimalloc.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdatomic.h" >&5
+printf %s "checking for stdatomic.h... " >&6; }
+if test ${ac_cv_header_stdatomic_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+    #include <stdatomic.h>
+    atomic_int int_var;
+    atomic_uintptr_t uintptr_var;
+    int main() {
+      atomic_store_explicit(&int_var, 5, memory_order_relaxed);
+      atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed);
+      int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst);
+      return 0;
+    }
+
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_header_stdatomic_h=yes
+else $as_nop
+  ac_cv_header_stdatomic_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdatomic_h" >&5
+printf "%s\n" "$ac_cv_header_stdatomic_h" >&6; }
+
+if test "x$ac_cv_header_stdatomic_h" = xyes
+then :
+
+
+printf "%s\n" "#define HAVE_STD_ATOMIC 1" >>confdefs.h
+
+
+fi
+
+# Check for GCC >= 4.7 and clang __atomic builtin functions
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for builtin __atomic_load_n and __atomic_store_n functions" >&5
+printf %s "checking for builtin __atomic_load_n and __atomic_store_n functions... " >&6; }
+if test ${ac_cv_builtin_atomic+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+    int val;
+    int main() {
+      __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST);
+      (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST);
+      return 0;
+    }
+
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_builtin_atomic=yes
+else $as_nop
+  ac_cv_builtin_atomic=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_builtin_atomic" >&5
+printf "%s\n" "$ac_cv_builtin_atomic" >&6; }
+
+if test "x$ac_cv_builtin_atomic" = xyes
+then :
+
+
+printf "%s\n" "#define HAVE_BUILTIN_ATOMIC 1" >>confdefs.h
+
+
+fi
+
+# --with-mimalloc
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-mimalloc" >&5
+printf %s "checking for --with-mimalloc... " >&6; }
+
+# Check whether --with-mimalloc was given.
+if test ${with_mimalloc+y}
+then :
+  withval=$with_mimalloc;
+else $as_nop
+  with_mimalloc="$ac_cv_header_stdatomic_h"
+
+fi
+
+
+if test "$with_mimalloc" != no; then
+  if test "$ac_cv_header_stdatomic_h" != yes; then
+    # mimalloc-atomic.h wants C11 stdatomic.h on POSIX
+    as_fn_error $? "mimalloc requires stdatomic.h, use --without-mimalloc to disable mimalloc." "$LINENO" 5
+  fi
+  with_mimalloc=yes
+
+printf "%s\n" "#define WITH_MIMALLOC 1" >>confdefs.h
+
+  MIMALLOC_HEADERS='$(MIMALLOC_HEADERS)'
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_doc_strings" >&5
-$as_echo "$with_doc_strings" >&6; }
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_mimalloc" >&5
+printf "%s\n" "$with_mimalloc" >&6; }
+
+
 
 # Check for Python-specific malloc support
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-pymalloc" >&5
-$as_echo_n "checking for --with-pymalloc... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-pymalloc" >&5
+printf %s "checking for --with-pymalloc... " >&6; }
 
 # Check whether --with-pymalloc was given.
-if test "${with_pymalloc+set}" = set; then :
+if test ${with_pymalloc+y}
+then :
   withval=$with_pymalloc;
 fi
 
@@ -15908,19 +16924,20 @@ fi
 if test "$with_pymalloc" != "no"
 then
 
-$as_echo "#define WITH_PYMALLOC 1" >>confdefs.h
+printf "%s\n" "#define WITH_PYMALLOC 1" >>confdefs.h
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_pymalloc" >&5
-$as_echo "$with_pymalloc" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_pymalloc" >&5
+printf "%s\n" "$with_pymalloc" >&6; }
 
 # Check whether objects such as float, tuple and dict are using
 # freelists to optimization memory allocation.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-freelists" >&5
-$as_echo_n "checking for --with-freelists... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-freelists" >&5
+printf %s "checking for --with-freelists... " >&6; }
 
 # Check whether --with-freelists was given.
-if test "${with_freelists+set}" = set; then :
+if test ${with_freelists+y}
+then :
   withval=$with_freelists;
 fi
 
@@ -15932,18 +16949,19 @@ fi
 if test "$with_freelists" != "no"
 then
 
-$as_echo "#define WITH_FREELISTS 1" >>confdefs.h
+printf "%s\n" "#define WITH_FREELISTS 1" >>confdefs.h
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_freelists" >&5
-$as_echo "$with_freelists" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_freelists" >&5
+printf "%s\n" "$with_freelists" >&6; }
 
 # Check for --with-c-locale-coercion
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-c-locale-coercion" >&5
-$as_echo_n "checking for --with-c-locale-coercion... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-c-locale-coercion" >&5
+printf %s "checking for --with-c-locale-coercion... " >&6; }
 
 # Check whether --with-c-locale-coercion was given.
-if test "${with_c_locale_coercion+set}" = set; then :
+if test ${with_c_locale_coercion+y}
+then :
   withval=$with_c_locale_coercion;
 fi
 
@@ -15955,53 +16973,56 @@ fi
 if test "$with_c_locale_coercion" != "no"
 then
 
-$as_echo "#define PY_COERCE_C_LOCALE 1" >>confdefs.h
+printf "%s\n" "#define PY_COERCE_C_LOCALE 1" >>confdefs.h
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_c_locale_coercion" >&5
-$as_echo "$with_c_locale_coercion" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_c_locale_coercion" >&5
+printf "%s\n" "$with_c_locale_coercion" >&6; }
 
 # Check for Valgrind support
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-valgrind" >&5
-$as_echo_n "checking for --with-valgrind... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-valgrind" >&5
+printf %s "checking for --with-valgrind... " >&6; }
 
 # Check whether --with-valgrind was given.
-if test "${with_valgrind+set}" = set; then :
+if test ${with_valgrind+y}
+then :
   withval=$with_valgrind;
-else
+else $as_nop
   with_valgrind=no
+
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_valgrind" >&5
-$as_echo "$with_valgrind" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_valgrind" >&5
+printf "%s\n" "$with_valgrind" >&6; }
 if test "$with_valgrind" != no; then
-    ac_fn_c_check_header_mongrel "$LINENO" "valgrind/valgrind.h" "ac_cv_header_valgrind_valgrind_h" "$ac_includes_default"
-if test "x$ac_cv_header_valgrind_valgrind_h" = xyes; then :
+    ac_fn_c_check_header_compile "$LINENO" "valgrind/valgrind.h" "ac_cv_header_valgrind_valgrind_h" "$ac_includes_default"
+if test "x$ac_cv_header_valgrind_valgrind_h" = xyes
+then :
 
-$as_echo "#define WITH_VALGRIND 1" >>confdefs.h
+printf "%s\n" "#define WITH_VALGRIND 1" >>confdefs.h
 
-else
+else $as_nop
   as_fn_error $? "Valgrind support requested but headers not available" "$LINENO" 5
 
 fi
 
-
     OPT="-DDYNAMIC_ANNOTATIONS_ENABLED=1 $OPT"
 fi
 
 # Check for DTrace support
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-dtrace" >&5
-$as_echo_n "checking for --with-dtrace... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-dtrace" >&5
+printf %s "checking for --with-dtrace... " >&6; }
 
 # Check whether --with-dtrace was given.
-if test "${with_dtrace+set}" = set; then :
+if test ${with_dtrace+y}
+then :
   withval=$with_dtrace;
-else
+else $as_nop
   with_dtrace=no
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_dtrace" >&5
-$as_echo "$with_dtrace" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_dtrace" >&5
+printf "%s\n" "$with_dtrace" >&6; }
 
 
 
@@ -16015,11 +17036,12 @@ if test "$with_dtrace" = "yes"
 then
     # Extract the first word of "dtrace", so it can be a program name with args.
 set dummy dtrace; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_DTRACE+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_DTRACE+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   case $DTRACE in
   [\\/]* | ?:[\\/]*)
   ac_cv_path_DTRACE="$DTRACE" # Let the user override the test with a path.
@@ -16029,11 +17051,15 @@ else
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_DTRACE="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_DTRACE="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -16046,11 +17072,11 @@ esac
 fi
 DTRACE=$ac_cv_path_DTRACE
 if test -n "$DTRACE"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DTRACE" >&5
-$as_echo "$DTRACE" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DTRACE" >&5
+printf "%s\n" "$DTRACE" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -16058,7 +17084,7 @@ fi
         as_fn_error $? "dtrace command not found on \$PATH" "$LINENO" 5
     fi
 
-$as_echo "#define WITH_DTRACE 1" >>confdefs.h
+printf "%s\n" "#define WITH_DTRACE 1" >>confdefs.h
 
     DTRACE_HEADERS="Include/pydtrace_probes.h"
 
@@ -16066,19 +17092,20 @@ $as_echo "#define WITH_DTRACE 1" >>confdefs.h
     # linked into the binary. Correspondingly, dtrace(1) is missing the ELF
     # generation flag '-G'. We check for presence of this flag, rather than
     # hardcoding support by OS, in the interest of robustness.
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether DTrace probes require linking" >&5
-$as_echo_n "checking whether DTrace probes require linking... " >&6; }
-if ${ac_cv_dtrace_link+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether DTrace probes require linking" >&5
+printf %s "checking whether DTrace probes require linking... " >&6; }
+if test ${ac_cv_dtrace_link+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
               ac_cv_dtrace_link=no
             echo 'BEGIN{}' > conftest.d
             "$DTRACE" $DFLAGS -G -s conftest.d -o conftest.o > /dev/null 2>&1 && \
                 ac_cv_dtrace_link=yes
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_dtrace_link" >&5
-$as_echo "$ac_cv_dtrace_link" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_dtrace_link" >&5
+printf "%s\n" "$ac_cv_dtrace_link" >&6; }
     if test "$ac_cv_dtrace_link" = "yes"; then
         DTRACE_OBJS="Python/pydtrace.o"
     fi
@@ -16090,8 +17117,8 @@ PLATFORM_OBJS=
 case $ac_sys_system in #(
   Emscripten) :
 
-    as_fn_append PLATFORM_OBJS ' Python/emscripten_signal.o'
-    as_fn_append PLATFORM_HEADERS ' $(srcdir)/Include/internal/pycore_emscripten_signal.h'
+    as_fn_append PLATFORM_OBJS ' Python/emscripten_signal.o Python/emscripten_trampoline.o'
+    as_fn_append PLATFORM_HEADERS ' $(srcdir)/Include/internal/pycore_emscripten_signal.h $(srcdir)/Include/internal/pycore_emscripten_trampoline.h'
    ;; #(
   *) :
      ;;
@@ -16105,23 +17132,19 @@ DLINCLDIR=.
 
 # the dlopen() function means we might want to use dynload_shlib.o. some
 # platforms have dlopen(), but don't want to use it.
-for ac_func in dlopen
-do :
-  ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
-if test "x$ac_cv_func_dlopen" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DLOPEN 1
-_ACEOF
+ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
+if test "x$ac_cv_func_dlopen" = xyes
+then :
+  printf "%s\n" "#define HAVE_DLOPEN 1" >>confdefs.h
 
 fi
-done
 
 
 # DYNLOADFILE specifies which dynload_*.o file we will use for dynamic
 # loading of modules.
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking DYNLOADFILE" >&5
-$as_echo_n "checking DYNLOADFILE... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking DYNLOADFILE" >&5
+printf %s "checking DYNLOADFILE... " >&6; }
 if test -z "$DYNLOADFILE"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -16136,20 +17159,20 @@ then
 	;;
 	esac
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $DYNLOADFILE" >&5
-$as_echo "$DYNLOADFILE" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DYNLOADFILE" >&5
+printf "%s\n" "$DYNLOADFILE" >&6; }
 if test "$DYNLOADFILE" != "dynload_stub.o"
 then
 
-$as_echo "#define HAVE_DYNAMIC_LOADING 1" >>confdefs.h
+printf "%s\n" "#define HAVE_DYNAMIC_LOADING 1" >>confdefs.h
 
 fi
 
 # MACHDEP_OBJS can be set to platform-specific object files needed by Python
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking MACHDEP_OBJS" >&5
-$as_echo_n "checking MACHDEP_OBJS... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking MACHDEP_OBJS" >&5
+printf %s "checking MACHDEP_OBJS... " >&6; }
 if test -z "$MACHDEP_OBJS"
 then
 	MACHDEP_OBJS=$extra_machdep_objs
@@ -16157,112 +17180,1259 @@ else
 	MACHDEP_OBJS="$MACHDEP_OBJS $extra_machdep_objs"
 fi
 if test -z "$MACHDEP_OBJS"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
-$as_echo "none" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none" >&5
+printf "%s\n" "none" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MACHDEP_OBJS" >&5
-$as_echo "$MACHDEP_OBJS" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MACHDEP_OBJS" >&5
+printf "%s\n" "$MACHDEP_OBJS" >&6; }
 fi
 
 # checks for library functions
-for ac_func in  \
-  accept4 alarm bind_textdomain_codeset chmod chown clock close_range confstr \
-  copy_file_range ctermid dup dup3 execv explicit_bzero explicit_memset \
-  faccessat fchmod fchmodat fchown fchownat fdopendir fdwalk fexecve \
-  fork fork1 fpathconf fstatat ftime ftruncate futimens futimes futimesat \
-  gai_strerror getegid getentropy geteuid getgid getgrgid getgrgid_r \
-  getgrnam_r getgrouplist getgroups gethostname getitimer getloadavg getlogin \
-  getpeername getpgid getpid getppid getpriority _getpty \
-  getpwent getpwnam_r getpwuid getpwuid_r getresgid getresuid getrusage getsid getspent \
-  getspnam getuid getwd if_nameindex initgroups kill killpg lchown linkat \
-  lockf lstat lutimes madvise mbrtowc memrchr mkdirat mkfifo mkfifoat \
-  mknod mknodat mktime mmap mremap nice openat opendir pathconf pause pipe \
-  pipe2 plock poll posix_fadvise posix_fallocate posix_spawn posix_spawnp \
-  pread preadv preadv2 pthread_condattr_setclock pthread_init pthread_kill \
-  pwrite pwritev pwritev2 readlink readlinkat readv realpath renameat \
-  rtpSpawn sched_get_priority_max sched_rr_get_interval sched_setaffinity \
-  sched_setparam sched_setscheduler sem_clockwait sem_getvalue sem_open \
-  sem_timedwait sem_unlink sendfile setegid seteuid setgid sethostname \
-  setitimer setlocale setpgid setpgrp setpriority setregid setresgid \
-  setresuid setreuid setsid setuid setvbuf shutdown sigaction sigaltstack \
-  sigfillset siginterrupt sigpending sigrelse sigtimedwait sigwait \
-  sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \
-  sysconf system tcgetpgrp tcsetpgrp tempnam timegm times tmpfile \
-  tmpnam tmpnam_r truncate ttyname umask uname unlinkat utimensat utimes vfork \
-  wait wait3 wait4 waitid waitpid wcscoll wcsftime wcsxfrm wmemcmp writev \
+ac_fn_c_check_func "$LINENO" "accept4" "ac_cv_func_accept4"
+if test "x$ac_cv_func_accept4" = xyes
+then :
+  printf "%s\n" "#define HAVE_ACCEPT4 1" >>confdefs.h
 
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+fi
+ac_fn_c_check_func "$LINENO" "alarm" "ac_cv_func_alarm"
+if test "x$ac_cv_func_alarm" = xyes
+then :
+  printf "%s\n" "#define HAVE_ALARM 1" >>confdefs.h
 
 fi
-done
+ac_fn_c_check_func "$LINENO" "bind_textdomain_codeset" "ac_cv_func_bind_textdomain_codeset"
+if test "x$ac_cv_func_bind_textdomain_codeset" = xyes
+then :
+  printf "%s\n" "#define HAVE_BIND_TEXTDOMAIN_CODESET 1" >>confdefs.h
 
+fi
+ac_fn_c_check_func "$LINENO" "chmod" "ac_cv_func_chmod"
+if test "x$ac_cv_func_chmod" = xyes
+then :
+  printf "%s\n" "#define HAVE_CHMOD 1" >>confdefs.h
 
-# Force lchmod off for Linux. Linux disallows changing the mode of symbolic
-# links. Some libc implementations have a stub lchmod implementation that always
-# returns an error.
-if test "$MACHDEP" != linux; then
-  for ac_func in lchmod
-do :
-  ac_fn_c_check_func "$LINENO" "lchmod" "ac_cv_func_lchmod"
-if test "x$ac_cv_func_lchmod" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LCHMOD 1
-_ACEOF
+fi
+ac_fn_c_check_func "$LINENO" "chown" "ac_cv_func_chown"
+if test "x$ac_cv_func_chown" = xyes
+then :
+  printf "%s\n" "#define HAVE_CHOWN 1" >>confdefs.h
 
 fi
-done
+ac_fn_c_check_func "$LINENO" "clock" "ac_cv_func_clock"
+if test "x$ac_cv_func_clock" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOCK 1" >>confdefs.h
 
 fi
+ac_fn_c_check_func "$LINENO" "close_range" "ac_cv_func_close_range"
+if test "x$ac_cv_func_close_range" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOSE_RANGE 1" >>confdefs.h
 
-ac_fn_c_check_decl "$LINENO" "dirfd" "ac_cv_have_decl_dirfd" "#include <sys/types.h>
-       #include <dirent.h>
-"
-if test "x$ac_cv_have_decl_dirfd" = xyes; then :
+fi
+ac_fn_c_check_func "$LINENO" "confstr" "ac_cv_func_confstr"
+if test "x$ac_cv_func_confstr" = xyes
+then :
+  printf "%s\n" "#define HAVE_CONFSTR 1" >>confdefs.h
 
-$as_echo "#define HAVE_DIRFD 1" >>confdefs.h
+fi
+ac_fn_c_check_func "$LINENO" "copy_file_range" "ac_cv_func_copy_file_range"
+if test "x$ac_cv_func_copy_file_range" = xyes
+then :
+  printf "%s\n" "#define HAVE_COPY_FILE_RANGE 1" >>confdefs.h
 
 fi
+ac_fn_c_check_func "$LINENO" "ctermid" "ac_cv_func_ctermid"
+if test "x$ac_cv_func_ctermid" = xyes
+then :
+  printf "%s\n" "#define HAVE_CTERMID 1" >>confdefs.h
 
+fi
+ac_fn_c_check_func "$LINENO" "dup" "ac_cv_func_dup"
+if test "x$ac_cv_func_dup" = xyes
+then :
+  printf "%s\n" "#define HAVE_DUP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "dup3" "ac_cv_func_dup3"
+if test "x$ac_cv_func_dup3" = xyes
+then :
+  printf "%s\n" "#define HAVE_DUP3 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "execv" "ac_cv_func_execv"
+if test "x$ac_cv_func_execv" = xyes
+then :
+  printf "%s\n" "#define HAVE_EXECV 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "explicit_bzero" "ac_cv_func_explicit_bzero"
+if test "x$ac_cv_func_explicit_bzero" = xyes
+then :
+  printf "%s\n" "#define HAVE_EXPLICIT_BZERO 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "explicit_memset" "ac_cv_func_explicit_memset"
+if test "x$ac_cv_func_explicit_memset" = xyes
+then :
+  printf "%s\n" "#define HAVE_EXPLICIT_MEMSET 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "faccessat" "ac_cv_func_faccessat"
+if test "x$ac_cv_func_faccessat" = xyes
+then :
+  printf "%s\n" "#define HAVE_FACCESSAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fchmod" "ac_cv_func_fchmod"
+if test "x$ac_cv_func_fchmod" = xyes
+then :
+  printf "%s\n" "#define HAVE_FCHMOD 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fchmodat" "ac_cv_func_fchmodat"
+if test "x$ac_cv_func_fchmodat" = xyes
+then :
+  printf "%s\n" "#define HAVE_FCHMODAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fchown" "ac_cv_func_fchown"
+if test "x$ac_cv_func_fchown" = xyes
+then :
+  printf "%s\n" "#define HAVE_FCHOWN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fchownat" "ac_cv_func_fchownat"
+if test "x$ac_cv_func_fchownat" = xyes
+then :
+  printf "%s\n" "#define HAVE_FCHOWNAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fdopendir" "ac_cv_func_fdopendir"
+if test "x$ac_cv_func_fdopendir" = xyes
+then :
+  printf "%s\n" "#define HAVE_FDOPENDIR 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fdwalk" "ac_cv_func_fdwalk"
+if test "x$ac_cv_func_fdwalk" = xyes
+then :
+  printf "%s\n" "#define HAVE_FDWALK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fexecve" "ac_cv_func_fexecve"
+if test "x$ac_cv_func_fexecve" = xyes
+then :
+  printf "%s\n" "#define HAVE_FEXECVE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fork" "ac_cv_func_fork"
+if test "x$ac_cv_func_fork" = xyes
+then :
+  printf "%s\n" "#define HAVE_FORK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fork1" "ac_cv_func_fork1"
+if test "x$ac_cv_func_fork1" = xyes
+then :
+  printf "%s\n" "#define HAVE_FORK1 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fpathconf" "ac_cv_func_fpathconf"
+if test "x$ac_cv_func_fpathconf" = xyes
+then :
+  printf "%s\n" "#define HAVE_FPATHCONF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "fstatat" "ac_cv_func_fstatat"
+if test "x$ac_cv_func_fstatat" = xyes
+then :
+  printf "%s\n" "#define HAVE_FSTATAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "ftime" "ac_cv_func_ftime"
+if test "x$ac_cv_func_ftime" = xyes
+then :
+  printf "%s\n" "#define HAVE_FTIME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "ftruncate" "ac_cv_func_ftruncate"
+if test "x$ac_cv_func_ftruncate" = xyes
+then :
+  printf "%s\n" "#define HAVE_FTRUNCATE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "futimens" "ac_cv_func_futimens"
+if test "x$ac_cv_func_futimens" = xyes
+then :
+  printf "%s\n" "#define HAVE_FUTIMENS 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "futimes" "ac_cv_func_futimes"
+if test "x$ac_cv_func_futimes" = xyes
+then :
+  printf "%s\n" "#define HAVE_FUTIMES 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "futimesat" "ac_cv_func_futimesat"
+if test "x$ac_cv_func_futimesat" = xyes
+then :
+  printf "%s\n" "#define HAVE_FUTIMESAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "gai_strerror" "ac_cv_func_gai_strerror"
+if test "x$ac_cv_func_gai_strerror" = xyes
+then :
+  printf "%s\n" "#define HAVE_GAI_STRERROR 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getegid" "ac_cv_func_getegid"
+if test "x$ac_cv_func_getegid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETEGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getentropy" "ac_cv_func_getentropy"
+if test "x$ac_cv_func_getentropy" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETENTROPY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "geteuid" "ac_cv_func_geteuid"
+if test "x$ac_cv_func_geteuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETEUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getgid" "ac_cv_func_getgid"
+if test "x$ac_cv_func_getgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getgrgid" "ac_cv_func_getgrgid"
+if test "x$ac_cv_func_getgrgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETGRGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getgrgid_r" "ac_cv_func_getgrgid_r"
+if test "x$ac_cv_func_getgrgid_r" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETGRGID_R 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getgrnam_r" "ac_cv_func_getgrnam_r"
+if test "x$ac_cv_func_getgrnam_r" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETGRNAM_R 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getgrouplist" "ac_cv_func_getgrouplist"
+if test "x$ac_cv_func_getgrouplist" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETGROUPLIST 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getgroups" "ac_cv_func_getgroups"
+if test "x$ac_cv_func_getgroups" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETGROUPS 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "gethostname" "ac_cv_func_gethostname"
+if test "x$ac_cv_func_gethostname" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETHOSTNAME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getitimer" "ac_cv_func_getitimer"
+if test "x$ac_cv_func_getitimer" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETITIMER 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getloadavg" "ac_cv_func_getloadavg"
+if test "x$ac_cv_func_getloadavg" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETLOADAVG 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getlogin" "ac_cv_func_getlogin"
+if test "x$ac_cv_func_getlogin" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETLOGIN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpeername" "ac_cv_func_getpeername"
+if test "x$ac_cv_func_getpeername" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPEERNAME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpgid" "ac_cv_func_getpgid"
+if test "x$ac_cv_func_getpgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpid" "ac_cv_func_getpid"
+if test "x$ac_cv_func_getpid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getppid" "ac_cv_func_getppid"
+if test "x$ac_cv_func_getppid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPPID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpriority" "ac_cv_func_getpriority"
+if test "x$ac_cv_func_getpriority" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPRIORITY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "_getpty" "ac_cv_func__getpty"
+if test "x$ac_cv_func__getpty" = xyes
+then :
+  printf "%s\n" "#define HAVE__GETPTY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpwent" "ac_cv_func_getpwent"
+if test "x$ac_cv_func_getpwent" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPWENT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpwnam_r" "ac_cv_func_getpwnam_r"
+if test "x$ac_cv_func_getpwnam_r" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPWNAM_R 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpwuid" "ac_cv_func_getpwuid"
+if test "x$ac_cv_func_getpwuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPWUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getpwuid_r" "ac_cv_func_getpwuid_r"
+if test "x$ac_cv_func_getpwuid_r" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPWUID_R 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getresgid" "ac_cv_func_getresgid"
+if test "x$ac_cv_func_getresgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETRESGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getresuid" "ac_cv_func_getresuid"
+if test "x$ac_cv_func_getresuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETRESUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getrusage" "ac_cv_func_getrusage"
+if test "x$ac_cv_func_getrusage" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETRUSAGE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getsid" "ac_cv_func_getsid"
+if test "x$ac_cv_func_getsid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETSID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getspent" "ac_cv_func_getspent"
+if test "x$ac_cv_func_getspent" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETSPENT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getspnam" "ac_cv_func_getspnam"
+if test "x$ac_cv_func_getspnam" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETSPNAM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getuid" "ac_cv_func_getuid"
+if test "x$ac_cv_func_getuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getwd" "ac_cv_func_getwd"
+if test "x$ac_cv_func_getwd" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETWD 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "if_nameindex" "ac_cv_func_if_nameindex"
+if test "x$ac_cv_func_if_nameindex" = xyes
+then :
+  printf "%s\n" "#define HAVE_IF_NAMEINDEX 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "initgroups" "ac_cv_func_initgroups"
+if test "x$ac_cv_func_initgroups" = xyes
+then :
+  printf "%s\n" "#define HAVE_INITGROUPS 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "kill" "ac_cv_func_kill"
+if test "x$ac_cv_func_kill" = xyes
+then :
+  printf "%s\n" "#define HAVE_KILL 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "killpg" "ac_cv_func_killpg"
+if test "x$ac_cv_func_killpg" = xyes
+then :
+  printf "%s\n" "#define HAVE_KILLPG 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "lchown" "ac_cv_func_lchown"
+if test "x$ac_cv_func_lchown" = xyes
+then :
+  printf "%s\n" "#define HAVE_LCHOWN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "linkat" "ac_cv_func_linkat"
+if test "x$ac_cv_func_linkat" = xyes
+then :
+  printf "%s\n" "#define HAVE_LINKAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "lockf" "ac_cv_func_lockf"
+if test "x$ac_cv_func_lockf" = xyes
+then :
+  printf "%s\n" "#define HAVE_LOCKF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "lstat" "ac_cv_func_lstat"
+if test "x$ac_cv_func_lstat" = xyes
+then :
+  printf "%s\n" "#define HAVE_LSTAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "lutimes" "ac_cv_func_lutimes"
+if test "x$ac_cv_func_lutimes" = xyes
+then :
+  printf "%s\n" "#define HAVE_LUTIMES 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "madvise" "ac_cv_func_madvise"
+if test "x$ac_cv_func_madvise" = xyes
+then :
+  printf "%s\n" "#define HAVE_MADVISE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mbrtowc" "ac_cv_func_mbrtowc"
+if test "x$ac_cv_func_mbrtowc" = xyes
+then :
+  printf "%s\n" "#define HAVE_MBRTOWC 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "memrchr" "ac_cv_func_memrchr"
+if test "x$ac_cv_func_memrchr" = xyes
+then :
+  printf "%s\n" "#define HAVE_MEMRCHR 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mkdirat" "ac_cv_func_mkdirat"
+if test "x$ac_cv_func_mkdirat" = xyes
+then :
+  printf "%s\n" "#define HAVE_MKDIRAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mkfifo" "ac_cv_func_mkfifo"
+if test "x$ac_cv_func_mkfifo" = xyes
+then :
+  printf "%s\n" "#define HAVE_MKFIFO 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mkfifoat" "ac_cv_func_mkfifoat"
+if test "x$ac_cv_func_mkfifoat" = xyes
+then :
+  printf "%s\n" "#define HAVE_MKFIFOAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mknod" "ac_cv_func_mknod"
+if test "x$ac_cv_func_mknod" = xyes
+then :
+  printf "%s\n" "#define HAVE_MKNOD 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mknodat" "ac_cv_func_mknodat"
+if test "x$ac_cv_func_mknodat" = xyes
+then :
+  printf "%s\n" "#define HAVE_MKNODAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mktime" "ac_cv_func_mktime"
+if test "x$ac_cv_func_mktime" = xyes
+then :
+  printf "%s\n" "#define HAVE_MKTIME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mmap" "ac_cv_func_mmap"
+if test "x$ac_cv_func_mmap" = xyes
+then :
+  printf "%s\n" "#define HAVE_MMAP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "mremap" "ac_cv_func_mremap"
+if test "x$ac_cv_func_mremap" = xyes
+then :
+  printf "%s\n" "#define HAVE_MREMAP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "nice" "ac_cv_func_nice"
+if test "x$ac_cv_func_nice" = xyes
+then :
+  printf "%s\n" "#define HAVE_NICE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "openat" "ac_cv_func_openat"
+if test "x$ac_cv_func_openat" = xyes
+then :
+  printf "%s\n" "#define HAVE_OPENAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "opendir" "ac_cv_func_opendir"
+if test "x$ac_cv_func_opendir" = xyes
+then :
+  printf "%s\n" "#define HAVE_OPENDIR 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pathconf" "ac_cv_func_pathconf"
+if test "x$ac_cv_func_pathconf" = xyes
+then :
+  printf "%s\n" "#define HAVE_PATHCONF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pause" "ac_cv_func_pause"
+if test "x$ac_cv_func_pause" = xyes
+then :
+  printf "%s\n" "#define HAVE_PAUSE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pipe" "ac_cv_func_pipe"
+if test "x$ac_cv_func_pipe" = xyes
+then :
+  printf "%s\n" "#define HAVE_PIPE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pipe2" "ac_cv_func_pipe2"
+if test "x$ac_cv_func_pipe2" = xyes
+then :
+  printf "%s\n" "#define HAVE_PIPE2 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "plock" "ac_cv_func_plock"
+if test "x$ac_cv_func_plock" = xyes
+then :
+  printf "%s\n" "#define HAVE_PLOCK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "poll" "ac_cv_func_poll"
+if test "x$ac_cv_func_poll" = xyes
+then :
+  printf "%s\n" "#define HAVE_POLL 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "posix_fadvise" "ac_cv_func_posix_fadvise"
+if test "x$ac_cv_func_posix_fadvise" = xyes
+then :
+  printf "%s\n" "#define HAVE_POSIX_FADVISE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "posix_fallocate" "ac_cv_func_posix_fallocate"
+if test "x$ac_cv_func_posix_fallocate" = xyes
+then :
+  printf "%s\n" "#define HAVE_POSIX_FALLOCATE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "posix_spawn" "ac_cv_func_posix_spawn"
+if test "x$ac_cv_func_posix_spawn" = xyes
+then :
+  printf "%s\n" "#define HAVE_POSIX_SPAWN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "posix_spawnp" "ac_cv_func_posix_spawnp"
+if test "x$ac_cv_func_posix_spawnp" = xyes
+then :
+  printf "%s\n" "#define HAVE_POSIX_SPAWNP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pread" "ac_cv_func_pread"
+if test "x$ac_cv_func_pread" = xyes
+then :
+  printf "%s\n" "#define HAVE_PREAD 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "preadv" "ac_cv_func_preadv"
+if test "x$ac_cv_func_preadv" = xyes
+then :
+  printf "%s\n" "#define HAVE_PREADV 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "preadv2" "ac_cv_func_preadv2"
+if test "x$ac_cv_func_preadv2" = xyes
+then :
+  printf "%s\n" "#define HAVE_PREADV2 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pthread_condattr_setclock" "ac_cv_func_pthread_condattr_setclock"
+if test "x$ac_cv_func_pthread_condattr_setclock" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_CONDATTR_SETCLOCK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pthread_init" "ac_cv_func_pthread_init"
+if test "x$ac_cv_func_pthread_init" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_INIT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pthread_kill" "ac_cv_func_pthread_kill"
+if test "x$ac_cv_func_pthread_kill" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_KILL 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pwrite" "ac_cv_func_pwrite"
+if test "x$ac_cv_func_pwrite" = xyes
+then :
+  printf "%s\n" "#define HAVE_PWRITE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pwritev" "ac_cv_func_pwritev"
+if test "x$ac_cv_func_pwritev" = xyes
+then :
+  printf "%s\n" "#define HAVE_PWRITEV 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "pwritev2" "ac_cv_func_pwritev2"
+if test "x$ac_cv_func_pwritev2" = xyes
+then :
+  printf "%s\n" "#define HAVE_PWRITEV2 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "readlink" "ac_cv_func_readlink"
+if test "x$ac_cv_func_readlink" = xyes
+then :
+  printf "%s\n" "#define HAVE_READLINK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "readlinkat" "ac_cv_func_readlinkat"
+if test "x$ac_cv_func_readlinkat" = xyes
+then :
+  printf "%s\n" "#define HAVE_READLINKAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "readv" "ac_cv_func_readv"
+if test "x$ac_cv_func_readv" = xyes
+then :
+  printf "%s\n" "#define HAVE_READV 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "realpath" "ac_cv_func_realpath"
+if test "x$ac_cv_func_realpath" = xyes
+then :
+  printf "%s\n" "#define HAVE_REALPATH 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "renameat" "ac_cv_func_renameat"
+if test "x$ac_cv_func_renameat" = xyes
+then :
+  printf "%s\n" "#define HAVE_RENAMEAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "rtpSpawn" "ac_cv_func_rtpSpawn"
+if test "x$ac_cv_func_rtpSpawn" = xyes
+then :
+  printf "%s\n" "#define HAVE_RTPSPAWN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sched_get_priority_max" "ac_cv_func_sched_get_priority_max"
+if test "x$ac_cv_func_sched_get_priority_max" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_GET_PRIORITY_MAX 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sched_rr_get_interval" "ac_cv_func_sched_rr_get_interval"
+if test "x$ac_cv_func_sched_rr_get_interval" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_RR_GET_INTERVAL 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sched_setaffinity" "ac_cv_func_sched_setaffinity"
+if test "x$ac_cv_func_sched_setaffinity" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_SETAFFINITY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sched_setparam" "ac_cv_func_sched_setparam"
+if test "x$ac_cv_func_sched_setparam" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_SETPARAM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sched_setscheduler" "ac_cv_func_sched_setscheduler"
+if test "x$ac_cv_func_sched_setscheduler" = xyes
+then :
+  printf "%s\n" "#define HAVE_SCHED_SETSCHEDULER 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sem_clockwait" "ac_cv_func_sem_clockwait"
+if test "x$ac_cv_func_sem_clockwait" = xyes
+then :
+  printf "%s\n" "#define HAVE_SEM_CLOCKWAIT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sem_getvalue" "ac_cv_func_sem_getvalue"
+if test "x$ac_cv_func_sem_getvalue" = xyes
+then :
+  printf "%s\n" "#define HAVE_SEM_GETVALUE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sem_open" "ac_cv_func_sem_open"
+if test "x$ac_cv_func_sem_open" = xyes
+then :
+  printf "%s\n" "#define HAVE_SEM_OPEN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sem_timedwait" "ac_cv_func_sem_timedwait"
+if test "x$ac_cv_func_sem_timedwait" = xyes
+then :
+  printf "%s\n" "#define HAVE_SEM_TIMEDWAIT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sem_unlink" "ac_cv_func_sem_unlink"
+if test "x$ac_cv_func_sem_unlink" = xyes
+then :
+  printf "%s\n" "#define HAVE_SEM_UNLINK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sendfile" "ac_cv_func_sendfile"
+if test "x$ac_cv_func_sendfile" = xyes
+then :
+  printf "%s\n" "#define HAVE_SENDFILE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setegid" "ac_cv_func_setegid"
+if test "x$ac_cv_func_setegid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETEGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "seteuid" "ac_cv_func_seteuid"
+if test "x$ac_cv_func_seteuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETEUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setgid" "ac_cv_func_setgid"
+if test "x$ac_cv_func_setgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sethostname" "ac_cv_func_sethostname"
+if test "x$ac_cv_func_sethostname" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETHOSTNAME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setitimer" "ac_cv_func_setitimer"
+if test "x$ac_cv_func_setitimer" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETITIMER 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setlocale" "ac_cv_func_setlocale"
+if test "x$ac_cv_func_setlocale" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETLOCALE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setpgid" "ac_cv_func_setpgid"
+if test "x$ac_cv_func_setpgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETPGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setpgrp" "ac_cv_func_setpgrp"
+if test "x$ac_cv_func_setpgrp" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETPGRP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setpriority" "ac_cv_func_setpriority"
+if test "x$ac_cv_func_setpriority" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETPRIORITY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setregid" "ac_cv_func_setregid"
+if test "x$ac_cv_func_setregid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETREGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setresgid" "ac_cv_func_setresgid"
+if test "x$ac_cv_func_setresgid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETRESGID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setresuid" "ac_cv_func_setresuid"
+if test "x$ac_cv_func_setresuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETRESUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setreuid" "ac_cv_func_setreuid"
+if test "x$ac_cv_func_setreuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETREUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setsid" "ac_cv_func_setsid"
+if test "x$ac_cv_func_setsid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETSID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setuid" "ac_cv_func_setuid"
+if test "x$ac_cv_func_setuid" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETUID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "setvbuf" "ac_cv_func_setvbuf"
+if test "x$ac_cv_func_setvbuf" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETVBUF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "shutdown" "ac_cv_func_shutdown"
+if test "x$ac_cv_func_shutdown" = xyes
+then :
+  printf "%s\n" "#define HAVE_SHUTDOWN 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigaction" "ac_cv_func_sigaction"
+if test "x$ac_cv_func_sigaction" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGACTION 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigaltstack" "ac_cv_func_sigaltstack"
+if test "x$ac_cv_func_sigaltstack" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGALTSTACK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigfillset" "ac_cv_func_sigfillset"
+if test "x$ac_cv_func_sigfillset" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGFILLSET 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "siginterrupt" "ac_cv_func_siginterrupt"
+if test "x$ac_cv_func_siginterrupt" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGINTERRUPT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigpending" "ac_cv_func_sigpending"
+if test "x$ac_cv_func_sigpending" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGPENDING 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigrelse" "ac_cv_func_sigrelse"
+if test "x$ac_cv_func_sigrelse" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGRELSE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigtimedwait" "ac_cv_func_sigtimedwait"
+if test "x$ac_cv_func_sigtimedwait" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGTIMEDWAIT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigwait" "ac_cv_func_sigwait"
+if test "x$ac_cv_func_sigwait" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGWAIT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sigwaitinfo" "ac_cv_func_sigwaitinfo"
+if test "x$ac_cv_func_sigwaitinfo" = xyes
+then :
+  printf "%s\n" "#define HAVE_SIGWAITINFO 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "snprintf" "ac_cv_func_snprintf"
+if test "x$ac_cv_func_snprintf" = xyes
+then :
+  printf "%s\n" "#define HAVE_SNPRINTF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "splice" "ac_cv_func_splice"
+if test "x$ac_cv_func_splice" = xyes
+then :
+  printf "%s\n" "#define HAVE_SPLICE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "strftime" "ac_cv_func_strftime"
+if test "x$ac_cv_func_strftime" = xyes
+then :
+  printf "%s\n" "#define HAVE_STRFTIME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "strlcpy" "ac_cv_func_strlcpy"
+if test "x$ac_cv_func_strlcpy" = xyes
+then :
+  printf "%s\n" "#define HAVE_STRLCPY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "strsignal" "ac_cv_func_strsignal"
+if test "x$ac_cv_func_strsignal" = xyes
+then :
+  printf "%s\n" "#define HAVE_STRSIGNAL 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "symlinkat" "ac_cv_func_symlinkat"
+if test "x$ac_cv_func_symlinkat" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYMLINKAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sync" "ac_cv_func_sync"
+if test "x$ac_cv_func_sync" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYNC 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "sysconf" "ac_cv_func_sysconf"
+if test "x$ac_cv_func_sysconf" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYSCONF 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "system" "ac_cv_func_system"
+if test "x$ac_cv_func_system" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYSTEM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "tcgetpgrp" "ac_cv_func_tcgetpgrp"
+if test "x$ac_cv_func_tcgetpgrp" = xyes
+then :
+  printf "%s\n" "#define HAVE_TCGETPGRP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "tcsetpgrp" "ac_cv_func_tcsetpgrp"
+if test "x$ac_cv_func_tcsetpgrp" = xyes
+then :
+  printf "%s\n" "#define HAVE_TCSETPGRP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "tempnam" "ac_cv_func_tempnam"
+if test "x$ac_cv_func_tempnam" = xyes
+then :
+  printf "%s\n" "#define HAVE_TEMPNAM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "timegm" "ac_cv_func_timegm"
+if test "x$ac_cv_func_timegm" = xyes
+then :
+  printf "%s\n" "#define HAVE_TIMEGM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "times" "ac_cv_func_times"
+if test "x$ac_cv_func_times" = xyes
+then :
+  printf "%s\n" "#define HAVE_TIMES 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "tmpfile" "ac_cv_func_tmpfile"
+if test "x$ac_cv_func_tmpfile" = xyes
+then :
+  printf "%s\n" "#define HAVE_TMPFILE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "tmpnam" "ac_cv_func_tmpnam"
+if test "x$ac_cv_func_tmpnam" = xyes
+then :
+  printf "%s\n" "#define HAVE_TMPNAM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "tmpnam_r" "ac_cv_func_tmpnam_r"
+if test "x$ac_cv_func_tmpnam_r" = xyes
+then :
+  printf "%s\n" "#define HAVE_TMPNAM_R 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "truncate" "ac_cv_func_truncate"
+if test "x$ac_cv_func_truncate" = xyes
+then :
+  printf "%s\n" "#define HAVE_TRUNCATE 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "ttyname" "ac_cv_func_ttyname"
+if test "x$ac_cv_func_ttyname" = xyes
+then :
+  printf "%s\n" "#define HAVE_TTYNAME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "umask" "ac_cv_func_umask"
+if test "x$ac_cv_func_umask" = xyes
+then :
+  printf "%s\n" "#define HAVE_UMASK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "uname" "ac_cv_func_uname"
+if test "x$ac_cv_func_uname" = xyes
+then :
+  printf "%s\n" "#define HAVE_UNAME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "unlinkat" "ac_cv_func_unlinkat"
+if test "x$ac_cv_func_unlinkat" = xyes
+then :
+  printf "%s\n" "#define HAVE_UNLINKAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "utimensat" "ac_cv_func_utimensat"
+if test "x$ac_cv_func_utimensat" = xyes
+then :
+  printf "%s\n" "#define HAVE_UTIMENSAT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "utimes" "ac_cv_func_utimes"
+if test "x$ac_cv_func_utimes" = xyes
+then :
+  printf "%s\n" "#define HAVE_UTIMES 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "vfork" "ac_cv_func_vfork"
+if test "x$ac_cv_func_vfork" = xyes
+then :
+  printf "%s\n" "#define HAVE_VFORK 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wait" "ac_cv_func_wait"
+if test "x$ac_cv_func_wait" = xyes
+then :
+  printf "%s\n" "#define HAVE_WAIT 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wait3" "ac_cv_func_wait3"
+if test "x$ac_cv_func_wait3" = xyes
+then :
+  printf "%s\n" "#define HAVE_WAIT3 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wait4" "ac_cv_func_wait4"
+if test "x$ac_cv_func_wait4" = xyes
+then :
+  printf "%s\n" "#define HAVE_WAIT4 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "waitid" "ac_cv_func_waitid"
+if test "x$ac_cv_func_waitid" = xyes
+then :
+  printf "%s\n" "#define HAVE_WAITID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "waitpid" "ac_cv_func_waitpid"
+if test "x$ac_cv_func_waitpid" = xyes
+then :
+  printf "%s\n" "#define HAVE_WAITPID 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wcscoll" "ac_cv_func_wcscoll"
+if test "x$ac_cv_func_wcscoll" = xyes
+then :
+  printf "%s\n" "#define HAVE_WCSCOLL 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wcsftime" "ac_cv_func_wcsftime"
+if test "x$ac_cv_func_wcsftime" = xyes
+then :
+  printf "%s\n" "#define HAVE_WCSFTIME 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wcsxfrm" "ac_cv_func_wcsxfrm"
+if test "x$ac_cv_func_wcsxfrm" = xyes
+then :
+  printf "%s\n" "#define HAVE_WCSXFRM 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "wmemcmp" "ac_cv_func_wmemcmp"
+if test "x$ac_cv_func_wmemcmp" = xyes
+then :
+  printf "%s\n" "#define HAVE_WMEMCMP 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "writev" "ac_cv_func_writev"
+if test "x$ac_cv_func_writev" = xyes
+then :
+  printf "%s\n" "#define HAVE_WRITEV 1" >>confdefs.h
+
+fi
+
+
+# Force lchmod off for Linux. Linux disallows changing the mode of symbolic
+# links. Some libc implementations have a stub lchmod implementation that always
+# returns an error.
+if test "$MACHDEP" != linux; then
+  ac_fn_c_check_func "$LINENO" "lchmod" "ac_cv_func_lchmod"
+if test "x$ac_cv_func_lchmod" = xyes
+then :
+  printf "%s\n" "#define HAVE_LCHMOD 1" >>confdefs.h
+
+fi
+
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC options needed to detect all undeclared functions" >&5
+printf %s "checking for $CC options needed to detect all undeclared functions... " >&6; }
+if test ${ac_cv_c_undeclared_builtin_options+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_CFLAGS=$CFLAGS
+   ac_cv_c_undeclared_builtin_options='cannot detect'
+   for ac_arg in '' -fno-builtin; do
+     CFLAGS="$ac_save_CFLAGS $ac_arg"
+     # This test program should *not* compile successfully.
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+(void) strchr;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  # This test program should compile successfully.
+        # No library function is consistently available on
+        # freestanding implementations, so test against a dummy
+        # declaration.  Include always-available headers on the
+        # off chance that they somehow elicit warnings.
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <float.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stddef.h>
+extern void ac_decl (int, char *);
+
+int
+main (void)
+{
+(void) ac_decl (0, (char *) 0);
+  (void) ac_decl;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  if test x"$ac_arg" = x
+then :
+  ac_cv_c_undeclared_builtin_options='none needed'
+else $as_nop
+  ac_cv_c_undeclared_builtin_options=$ac_arg
+fi
+          break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    done
+    CFLAGS=$ac_save_CFLAGS
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_undeclared_builtin_options" >&5
+printf "%s\n" "$ac_cv_c_undeclared_builtin_options" >&6; }
+  case $ac_cv_c_undeclared_builtin_options in #(
+  'cannot detect') :
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot make $CC report undeclared builtins
+See \`config.log' for more details" "$LINENO" 5; } ;; #(
+  'none needed') :
+    ac_c_undeclared_builtin_options='' ;; #(
+  *) :
+    ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;;
+esac
+
+ac_fn_check_decl "$LINENO" "dirfd" "ac_cv_have_decl_dirfd" "#include <sys/types.h>
+               #include <dirent.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_dirfd" = xyes
+then :
+
+printf "%s\n" "#define HAVE_DIRFD 1" >>confdefs.h
+
+fi
 
 # For some functions, having a definition is not sufficient, since
 # we want to take their address.
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for chroot" >&5
-$as_echo_n "checking for chroot... " >&6; }
-if ${ac_cv_func_chroot+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for chroot" >&5
+printf %s "checking for chroot... " >&6; }
+if test ${ac_cv_func_chroot+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=chroot
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_chroot=yes
-else
+else $as_nop
   ac_cv_func_chroot=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_chroot" >&5
-$as_echo "$ac_cv_func_chroot" >&6; }
-  if test "x$ac_cv_func_chroot" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_chroot" >&5
+printf "%s\n" "$ac_cv_func_chroot" >&6; }
+  if test "x$ac_cv_func_chroot" = xyes
+then :
 
-$as_echo "#define HAVE_CHROOT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CHROOT 1" >>confdefs.h
 
 fi
 
@@ -16270,35 +18440,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for link" >&5
-$as_echo_n "checking for link... " >&6; }
-if ${ac_cv_func_link+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for link" >&5
+printf %s "checking for link... " >&6; }
+if test ${ac_cv_func_link+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=link
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_link=yes
-else
+else $as_nop
   ac_cv_func_link=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_link" >&5
-$as_echo "$ac_cv_func_link" >&6; }
-  if test "x$ac_cv_func_link" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_link" >&5
+printf "%s\n" "$ac_cv_func_link" >&6; }
+  if test "x$ac_cv_func_link" = xyes
+then :
 
-$as_echo "#define HAVE_LINK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LINK 1" >>confdefs.h
 
 fi
 
@@ -16306,35 +18479,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for symlink" >&5
-$as_echo_n "checking for symlink... " >&6; }
-if ${ac_cv_func_symlink+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for symlink" >&5
+printf %s "checking for symlink... " >&6; }
+if test ${ac_cv_func_symlink+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=symlink
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_symlink=yes
-else
+else $as_nop
   ac_cv_func_symlink=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_symlink" >&5
-$as_echo "$ac_cv_func_symlink" >&6; }
-  if test "x$ac_cv_func_symlink" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_symlink" >&5
+printf "%s\n" "$ac_cv_func_symlink" >&6; }
+  if test "x$ac_cv_func_symlink" = xyes
+then :
 
-$as_echo "#define HAVE_SYMLINK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SYMLINK 1" >>confdefs.h
 
 fi
 
@@ -16342,35 +18518,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fchdir" >&5
-$as_echo_n "checking for fchdir... " >&6; }
-if ${ac_cv_func_fchdir+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fchdir" >&5
+printf %s "checking for fchdir... " >&6; }
+if test ${ac_cv_func_fchdir+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=fchdir
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_fchdir=yes
-else
+else $as_nop
   ac_cv_func_fchdir=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fchdir" >&5
-$as_echo "$ac_cv_func_fchdir" >&6; }
-  if test "x$ac_cv_func_fchdir" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fchdir" >&5
+printf "%s\n" "$ac_cv_func_fchdir" >&6; }
+  if test "x$ac_cv_func_fchdir" = xyes
+then :
 
-$as_echo "#define HAVE_FCHDIR 1" >>confdefs.h
+printf "%s\n" "#define HAVE_FCHDIR 1" >>confdefs.h
 
 fi
 
@@ -16378,35 +18557,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fsync" >&5
-$as_echo_n "checking for fsync... " >&6; }
-if ${ac_cv_func_fsync+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fsync" >&5
+printf %s "checking for fsync... " >&6; }
+if test ${ac_cv_func_fsync+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=fsync
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_fsync=yes
-else
+else $as_nop
   ac_cv_func_fsync=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fsync" >&5
-$as_echo "$ac_cv_func_fsync" >&6; }
-  if test "x$ac_cv_func_fsync" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fsync" >&5
+printf "%s\n" "$ac_cv_func_fsync" >&6; }
+  if test "x$ac_cv_func_fsync" = xyes
+then :
 
-$as_echo "#define HAVE_FSYNC 1" >>confdefs.h
+printf "%s\n" "#define HAVE_FSYNC 1" >>confdefs.h
 
 fi
 
@@ -16414,35 +18596,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fdatasync" >&5
-$as_echo_n "checking for fdatasync... " >&6; }
-if ${ac_cv_func_fdatasync+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fdatasync" >&5
+printf %s "checking for fdatasync... " >&6; }
+if test ${ac_cv_func_fdatasync+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=fdatasync
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_fdatasync=yes
-else
+else $as_nop
   ac_cv_func_fdatasync=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fdatasync" >&5
-$as_echo "$ac_cv_func_fdatasync" >&6; }
-  if test "x$ac_cv_func_fdatasync" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fdatasync" >&5
+printf "%s\n" "$ac_cv_func_fdatasync" >&6; }
+  if test "x$ac_cv_func_fdatasync" = xyes
+then :
 
-$as_echo "#define HAVE_FDATASYNC 1" >>confdefs.h
+printf "%s\n" "#define HAVE_FDATASYNC 1" >>confdefs.h
 
 fi
 
@@ -16450,35 +18635,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for epoll_create" >&5
-$as_echo_n "checking for epoll_create... " >&6; }
-if ${ac_cv_func_epoll_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for epoll_create" >&5
+printf %s "checking for epoll_create... " >&6; }
+if test ${ac_cv_func_epoll_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/epoll.h>
 int
-main ()
+main (void)
 {
 void *x=epoll_create
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_epoll_create=yes
-else
+else $as_nop
   ac_cv_func_epoll_create=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_epoll_create" >&5
-$as_echo "$ac_cv_func_epoll_create" >&6; }
-  if test "x$ac_cv_func_epoll_create" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_epoll_create" >&5
+printf "%s\n" "$ac_cv_func_epoll_create" >&6; }
+  if test "x$ac_cv_func_epoll_create" = xyes
+then :
 
-$as_echo "#define HAVE_EPOLL 1" >>confdefs.h
+printf "%s\n" "#define HAVE_EPOLL 1" >>confdefs.h
 
 fi
 
@@ -16486,35 +18674,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for epoll_create1" >&5
-$as_echo_n "checking for epoll_create1... " >&6; }
-if ${ac_cv_func_epoll_create1+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for epoll_create1" >&5
+printf %s "checking for epoll_create1... " >&6; }
+if test ${ac_cv_func_epoll_create1+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/epoll.h>
 int
-main ()
+main (void)
 {
 void *x=epoll_create1
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_epoll_create1=yes
-else
+else $as_nop
   ac_cv_func_epoll_create1=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_epoll_create1" >&5
-$as_echo "$ac_cv_func_epoll_create1" >&6; }
-  if test "x$ac_cv_func_epoll_create1" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_epoll_create1" >&5
+printf "%s\n" "$ac_cv_func_epoll_create1" >&6; }
+  if test "x$ac_cv_func_epoll_create1" = xyes
+then :
 
-$as_echo "#define HAVE_EPOLL_CREATE1 1" >>confdefs.h
+printf "%s\n" "#define HAVE_EPOLL_CREATE1 1" >>confdefs.h
 
 fi
 
@@ -16522,11 +18713,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for kqueue" >&5
-$as_echo_n "checking for kqueue... " >&6; }
-if ${ac_cv_func_kqueue+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for kqueue" >&5
+printf %s "checking for kqueue... " >&6; }
+if test ${ac_cv_func_kqueue+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -16534,26 +18726,28 @@ else
 #include <sys/event.h>
 
 int
-main ()
+main (void)
 {
 void *x=kqueue
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_kqueue=yes
-else
+else $as_nop
   ac_cv_func_kqueue=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_kqueue" >&5
-$as_echo "$ac_cv_func_kqueue" >&6; }
-  if test "x$ac_cv_func_kqueue" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_kqueue" >&5
+printf "%s\n" "$ac_cv_func_kqueue" >&6; }
+  if test "x$ac_cv_func_kqueue" = xyes
+then :
 
-$as_echo "#define HAVE_KQUEUE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_KQUEUE 1" >>confdefs.h
 
 fi
 
@@ -16561,11 +18755,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for prlimit" >&5
-$as_echo_n "checking for prlimit... " >&6; }
-if ${ac_cv_func_prlimit+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for prlimit" >&5
+printf %s "checking for prlimit... " >&6; }
+if test ${ac_cv_func_prlimit+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -16573,26 +18768,28 @@ else
 #include <sys/resource.h>
 
 int
-main ()
+main (void)
 {
 void *x=prlimit
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_prlimit=yes
-else
+else $as_nop
   ac_cv_func_prlimit=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_prlimit" >&5
-$as_echo "$ac_cv_func_prlimit" >&6; }
-  if test "x$ac_cv_func_prlimit" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_prlimit" >&5
+printf "%s\n" "$ac_cv_func_prlimit" >&6; }
+  if test "x$ac_cv_func_prlimit" = xyes
+then :
 
-$as_echo "#define HAVE_PRLIMIT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_PRLIMIT 1" >>confdefs.h
 
 fi
 
@@ -16601,35 +18798,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _dyld_shared_cache_contains_path" >&5
-$as_echo_n "checking for _dyld_shared_cache_contains_path... " >&6; }
-if ${ac_cv_func__dyld_shared_cache_contains_path+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for _dyld_shared_cache_contains_path" >&5
+printf %s "checking for _dyld_shared_cache_contains_path... " >&6; }
+if test ${ac_cv_func__dyld_shared_cache_contains_path+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <mach-o/dyld.h>
 int
-main ()
+main (void)
 {
 void *x=_dyld_shared_cache_contains_path
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func__dyld_shared_cache_contains_path=yes
-else
+else $as_nop
   ac_cv_func__dyld_shared_cache_contains_path=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func__dyld_shared_cache_contains_path" >&5
-$as_echo "$ac_cv_func__dyld_shared_cache_contains_path" >&6; }
-  if test "x$ac_cv_func__dyld_shared_cache_contains_path" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func__dyld_shared_cache_contains_path" >&5
+printf "%s\n" "$ac_cv_func__dyld_shared_cache_contains_path" >&6; }
+  if test "x$ac_cv_func__dyld_shared_cache_contains_path" = xyes
+then :
 
-$as_echo "#define HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH 1" >>confdefs.h
+printf "%s\n" "#define HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH 1" >>confdefs.h
 
 fi
 
@@ -16638,11 +18838,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for memfd_create" >&5
-$as_echo_n "checking for memfd_create... " >&6; }
-if ${ac_cv_func_memfd_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for memfd_create" >&5
+printf %s "checking for memfd_create... " >&6; }
+if test ${ac_cv_func_memfd_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -16654,26 +18855,28 @@ else
 #endif
 
 int
-main ()
+main (void)
 {
 void *x=memfd_create
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_memfd_create=yes
-else
+else $as_nop
   ac_cv_func_memfd_create=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_memfd_create" >&5
-$as_echo "$ac_cv_func_memfd_create" >&6; }
-  if test "x$ac_cv_func_memfd_create" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_memfd_create" >&5
+printf "%s\n" "$ac_cv_func_memfd_create" >&6; }
+  if test "x$ac_cv_func_memfd_create" = xyes
+then :
 
-$as_echo "#define HAVE_MEMFD_CREATE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_MEMFD_CREATE 1" >>confdefs.h
 
 fi
 
@@ -16682,11 +18885,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for eventfd" >&5
-$as_echo_n "checking for eventfd... " >&6; }
-if ${ac_cv_func_eventfd+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for eventfd" >&5
+printf %s "checking for eventfd... " >&6; }
+if test ${ac_cv_func_eventfd+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -16695,26 +18899,72 @@ else
 #endif
 
 int
-main ()
+main (void)
 {
 void *x=eventfd
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_eventfd=yes
-else
+else $as_nop
   ac_cv_func_eventfd=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_eventfd" >&5
+printf "%s\n" "$ac_cv_func_eventfd" >&6; }
+  if test "x$ac_cv_func_eventfd" = xyes
+then :
+
+printf "%s\n" "#define HAVE_EVENTFD 1" >>confdefs.h
+
+fi
+
+
+
+
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for timerfd_create" >&5
+printf %s "checking for timerfd_create... " >&6; }
+if test ${ac_cv_func_timerfd_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifdef HAVE_SYS_TIMERFD_H
+#include <sys/timerfd.h>
+#endif
+
+int
+main (void)
+{
+void *x=timerfd_create
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_func_timerfd_create=yes
+else $as_nop
+  ac_cv_func_timerfd_create=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_eventfd" >&5
-$as_echo "$ac_cv_func_eventfd" >&6; }
-  if test "x$ac_cv_func_eventfd" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_timerfd_create" >&5
+printf "%s\n" "$ac_cv_func_timerfd_create" >&6; }
+  if test "x$ac_cv_func_timerfd_create" = xyes
+then :
 
-$as_echo "#define HAVE_EVENTFD 1" >>confdefs.h
+printf "%s\n" "#define HAVE_TIMERFD_CREATE 1" >>confdefs.h
 
 fi
 
@@ -16729,51 +18979,55 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ctermid_r" >&5
-$as_echo_n "checking for ctermid_r... " >&6; }
-if ${ac_cv_func_ctermid_r+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ctermid_r" >&5
+printf %s "checking for ctermid_r... " >&6; }
+if test ${ac_cv_func_ctermid_r+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdio.h>
 int
-main ()
+main (void)
 {
 void *x=ctermid_r
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_ctermid_r=yes
-else
+else $as_nop
   ac_cv_func_ctermid_r=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ctermid_r" >&5
-$as_echo "$ac_cv_func_ctermid_r" >&6; }
-  if test "x$ac_cv_func_ctermid_r" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_ctermid_r" >&5
+printf "%s\n" "$ac_cv_func_ctermid_r" >&6; }
+  if test "x$ac_cv_func_ctermid_r" = xyes
+then :
 
-$as_echo "#define HAVE_CTERMID_R 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CTERMID_R 1" >>confdefs.h
 
 fi
 
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for flock declaration" >&5
-$as_echo_n "checking for flock declaration... " >&6; }
-if ${ac_cv_flock_decl+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for flock declaration" >&5
+printf %s "checking for flock declaration... " >&6; }
+if test ${ac_cv_flock_decl+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/file.h>
 int
-main ()
+main (void)
 {
 void* p = flock
 
@@ -16781,34 +19035,35 @@ void* p = flock
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_flock_decl=yes
-else
+else $as_nop
   ac_cv_flock_decl=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_flock_decl" >&5
-$as_echo "$ac_cv_flock_decl" >&6; }
-if test "x$ac_cv_flock_decl" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_flock_decl" >&5
+printf "%s\n" "$ac_cv_flock_decl" >&6; }
+if test "x$ac_cv_flock_decl" = xyes
+then :
+
   for ac_func in flock
 do :
   ac_fn_c_check_func "$LINENO" "flock" "ac_cv_func_flock"
-if test "x$ac_cv_func_flock" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_FLOCK 1
-_ACEOF
-
-fi
-done
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for flock in -lbsd" >&5
-$as_echo_n "checking for flock in -lbsd... " >&6; }
-if ${ac_cv_lib_bsd_flock+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func_flock" = xyes
+then :
+  printf "%s\n" "#define HAVE_FLOCK 1" >>confdefs.h
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for flock in -lbsd" >&5
+printf %s "checking for flock in -lbsd... " >&6; }
+if test ${ac_cv_lib_bsd_flock+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lbsd  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -16817,104 +19072,111 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char flock ();
 int
-main ()
+main (void)
 {
 return flock ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_bsd_flock=yes
-else
+else $as_nop
   ac_cv_lib_bsd_flock=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_flock" >&5
-$as_echo "$ac_cv_lib_bsd_flock" >&6; }
-if test "x$ac_cv_lib_bsd_flock" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_flock" >&5
+printf "%s\n" "$ac_cv_lib_bsd_flock" >&6; }
+if test "x$ac_cv_lib_bsd_flock" = xyes
+then :
   FCNTL_LIBS="-lbsd"
 fi
 
+fi
 
+done
 fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getpagesize" >&5
-$as_echo_n "checking for getpagesize... " >&6; }
-if ${ac_cv_func_getpagesize+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getpagesize" >&5
+printf %s "checking for getpagesize... " >&6; }
+if test ${ac_cv_func_getpagesize+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <unistd.h>
 int
-main ()
+main (void)
 {
 void *x=getpagesize
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_getpagesize=yes
-else
+else $as_nop
   ac_cv_func_getpagesize=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getpagesize" >&5
-$as_echo "$ac_cv_func_getpagesize" >&6; }
-  if test "x$ac_cv_func_getpagesize" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getpagesize" >&5
+printf "%s\n" "$ac_cv_func_getpagesize" >&6; }
+  if test "x$ac_cv_func_getpagesize" = xyes
+then :
 
-$as_echo "#define HAVE_GETPAGESIZE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETPAGESIZE 1" >>confdefs.h
 
 fi
 
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken unsetenv" >&5
-$as_echo_n "checking for broken unsetenv... " >&6; }
-if ${ac_cv_broken_unsetenv+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for broken unsetenv" >&5
+printf %s "checking for broken unsetenv... " >&6; }
+if test ${ac_cv_broken_unsetenv+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdlib.h>
 int
-main ()
+main (void)
 {
 int res = unsetenv("DUMMY")
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_broken_unsetenv=no
-else
+else $as_nop
   ac_cv_broken_unsetenv=yes
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_unsetenv" >&5
-$as_echo "$ac_cv_broken_unsetenv" >&6; }
-if test "x$ac_cv_broken_unsetenv" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_unsetenv" >&5
+printf "%s\n" "$ac_cv_broken_unsetenv" >&6; }
+if test "x$ac_cv_broken_unsetenv" = xyes
+then :
 
 
-$as_echo "#define HAVE_BROKEN_UNSETENV 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_UNSETENV 1" >>confdefs.h
 
 
 fi
@@ -16923,11 +19185,12 @@ for ac_prog in true
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_TRUE+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_TRUE+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$TRUE"; then
   ac_cv_prog_TRUE="$TRUE" # Let the user override the test.
 else
@@ -16935,11 +19198,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_TRUE="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -16950,11 +19217,11 @@ fi
 fi
 TRUE=$ac_cv_prog_TRUE
 if test -n "$TRUE"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $TRUE" >&5
-$as_echo "$TRUE" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $TRUE" >&5
+printf "%s\n" "$TRUE" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -16963,11 +19230,12 @@ done
 test -n "$TRUE" || TRUE="/bin/true"
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_aton in -lc" >&5
-$as_echo_n "checking for inet_aton in -lc... " >&6; }
-if ${ac_cv_lib_c_inet_aton+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inet_aton in -lc" >&5
+printf %s "checking for inet_aton in -lc... " >&6; }
+if test ${ac_cv_lib_c_inet_aton+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lc  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -16976,37 +19244,37 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char inet_aton ();
 int
-main ()
+main (void)
 {
 return inet_aton ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_c_inet_aton=yes
-else
+else $as_nop
   ac_cv_lib_c_inet_aton=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_inet_aton" >&5
-$as_echo "$ac_cv_lib_c_inet_aton" >&6; }
-if test "x$ac_cv_lib_c_inet_aton" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_inet_aton" >&5
+printf "%s\n" "$ac_cv_lib_c_inet_aton" >&6; }
+if test "x$ac_cv_lib_c_inet_aton" = xyes
+then :
   $ac_cv_prog_TRUE
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_aton in -lresolv" >&5
-$as_echo_n "checking for inet_aton in -lresolv... " >&6; }
-if ${ac_cv_lib_resolv_inet_aton+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inet_aton in -lresolv" >&5
+printf %s "checking for inet_aton in -lresolv... " >&6; }
+if test ${ac_cv_lib_resolv_inet_aton+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lresolv  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17015,33 +19283,30 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char inet_aton ();
 int
-main ()
+main (void)
 {
 return inet_aton ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_resolv_inet_aton=yes
-else
+else $as_nop
   ac_cv_lib_resolv_inet_aton=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_resolv_inet_aton" >&5
-$as_echo "$ac_cv_lib_resolv_inet_aton" >&6; }
-if test "x$ac_cv_lib_resolv_inet_aton" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBRESOLV 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_resolv_inet_aton" >&5
+printf "%s\n" "$ac_cv_lib_resolv_inet_aton" >&6; }
+if test "x$ac_cv_lib_resolv_inet_aton" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBRESOLV 1" >>confdefs.h
 
   LIBS="-lresolv $LIBS"
 
@@ -17053,14 +19318,16 @@ fi
 
 # On Tru64, chflags seems to be present, but calling it will
 # exit Python
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for chflags" >&5
-$as_echo_n "checking for chflags... " >&6; }
-if ${ac_cv_have_chflags+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for chflags" >&5
+printf %s "checking for chflags... " >&6; }
+if test ${ac_cv_have_chflags+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_have_chflags=cross
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -17074,9 +19341,10 @@ int main(int argc, char *argv[])
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_have_chflags=yes
-else
+else $as_nop
   ac_cv_have_chflags=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -17085,31 +19353,34 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_chflags" >&5
-$as_echo "$ac_cv_have_chflags" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_chflags" >&5
+printf "%s\n" "$ac_cv_have_chflags" >&6; }
 if test "$ac_cv_have_chflags" = cross ; then
   ac_fn_c_check_func "$LINENO" "chflags" "ac_cv_func_chflags"
-if test "x$ac_cv_func_chflags" = xyes; then :
+if test "x$ac_cv_func_chflags" = xyes
+then :
   ac_cv_have_chflags="yes"
-else
+else $as_nop
   ac_cv_have_chflags="no"
 fi
 
 fi
 if test "$ac_cv_have_chflags" = yes ; then
 
-$as_echo "#define HAVE_CHFLAGS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CHFLAGS 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lchflags" >&5
-$as_echo_n "checking for lchflags... " >&6; }
-if ${ac_cv_have_lchflags+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for lchflags" >&5
+printf %s "checking for lchflags... " >&6; }
+if test ${ac_cv_have_lchflags+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_have_lchflags=cross
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -17123,9 +19394,10 @@ int main(int argc, char *argv[])
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_have_lchflags=yes
-else
+else $as_nop
   ac_cv_have_lchflags=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -17134,20 +19406,21 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_lchflags" >&5
-$as_echo "$ac_cv_have_lchflags" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_lchflags" >&5
+printf "%s\n" "$ac_cv_have_lchflags" >&6; }
 if test "$ac_cv_have_lchflags" = cross ; then
   ac_fn_c_check_func "$LINENO" "lchflags" "ac_cv_func_lchflags"
-if test "x$ac_cv_func_lchflags" = xyes; then :
+if test "x$ac_cv_func_lchflags" = xyes
+then :
   ac_cv_have_lchflags="yes"
-else
+else $as_nop
   ac_cv_have_lchflags="no"
 fi
 
 fi
 if test "$ac_cv_have_lchflags" = yes ; then
 
-$as_echo "#define HAVE_LCHFLAGS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LCHFLAGS 1" >>confdefs.h
 
 fi
 
@@ -17156,7 +19429,8 @@ fi
 
 
 
-  if test "$ac_sys_system" = "Emscripten" -a -z "$ZLIB_CFLAGS" -a -z "$ZLIB_LIBS"; then :
+  if test "$ac_sys_system" = "Emscripten" -a -z "$ZLIB_CFLAGS" -a -z "$ZLIB_LIBS"
+then :
 
     ZLIB_CFLAGS="-sUSE_ZLIB"
     ZLIB_LIBS="-sUSE_ZLIB"
@@ -17168,17 +19442,17 @@ fi
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ZLIB" >&5
-$as_echo_n "checking for ZLIB... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for zlib >= 1.2.0" >&5
+printf %s "checking for zlib >= 1.2.0... " >&6; }
 
 if test -n "$ZLIB_CFLAGS"; then
     pkg_cv_ZLIB_CFLAGS="$ZLIB_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"zlib >= 1.2.0\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"zlib >= 1.2.0\""; } >&5
   ($PKG_CONFIG --exists --print-errors "zlib >= 1.2.0") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_ZLIB_CFLAGS=`$PKG_CONFIG --cflags "zlib >= 1.2.0" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -17192,10 +19466,10 @@ if test -n "$ZLIB_LIBS"; then
     pkg_cv_ZLIB_LIBS="$ZLIB_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"zlib >= 1.2.0\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"zlib >= 1.2.0\""; } >&5
   ($PKG_CONFIG --exists --print-errors "zlib >= 1.2.0") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_ZLIB_LIBS=`$PKG_CONFIG --libs "zlib >= 1.2.0" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -17209,8 +19483,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -17234,20 +19508,20 @@ save_LIBS=$LIBS
 
     CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
     LDFLAGS="$LDFLAGS $ZLIB_LIBS"
-    for ac_header in zlib.h
+           for ac_header in zlib.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_zlib_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_ZLIB_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
+if test "x$ac_cv_header_zlib_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_ZLIB_H 1" >>confdefs.h
 
       py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gzread in -lz" >&5
-$as_echo_n "checking for gzread in -lz... " >&6; }
-if ${ac_cv_lib_z_gzread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gzread in -lz" >&5
+printf %s "checking for gzread in -lz... " >&6; }
+if test ${ac_cv_lib_z_gzread+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lz  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17256,54 +19530,54 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char gzread ();
 int
-main ()
+main (void)
 {
 return gzread ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_z_gzread=yes
-else
+else $as_nop
   ac_cv_lib_z_gzread=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_gzread" >&5
-$as_echo "$ac_cv_lib_z_gzread" >&6; }
-if test "x$ac_cv_lib_z_gzread" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_gzread" >&5
+printf "%s\n" "$ac_cv_lib_z_gzread" >&6; }
+if test "x$ac_cv_lib_z_gzread" = xyes
+then :
   have_zlib=yes
-else
+else $as_nop
   have_zlib=no
 fi
 
 LIBS=$py_check_lib_save_LIBS
 
 
-else
+else $as_nop
   have_zlib=no
 fi
 
 done
-
-    if test "x$have_zlib" = xyes; then :
+    if test "x$have_zlib" = xyes
+then :
 
       ZLIB_CFLAGS=${ZLIB_CFLAGS-""}
       ZLIB_LIBS=${ZLIB_LIBS-"-lz"}
       py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inflateCopy in -lz" >&5
-$as_echo_n "checking for inflateCopy in -lz... " >&6; }
-if ${ac_cv_lib_z_inflateCopy+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inflateCopy in -lz" >&5
+printf %s "checking for inflateCopy in -lz... " >&6; }
+if test ${ac_cv_lib_z_inflateCopy+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lz  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17312,31 +19586,30 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char inflateCopy ();
 int
-main ()
+main (void)
 {
 return inflateCopy ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_z_inflateCopy=yes
-else
+else $as_nop
   ac_cv_lib_z_inflateCopy=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_inflateCopy" >&5
-$as_echo "$ac_cv_lib_z_inflateCopy" >&6; }
-if test "x$ac_cv_lib_z_inflateCopy" = xyes; then :
-  $as_echo "#define HAVE_ZLIB_COPY 1" >>confdefs.h
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_inflateCopy" >&5
+printf "%s\n" "$ac_cv_lib_z_inflateCopy" >&6; }
+if test "x$ac_cv_lib_z_inflateCopy" = xyes
+then :
+  printf "%s\n" "#define HAVE_ZLIB_COPY 1" >>confdefs.h
 
 fi
 
@@ -17353,8 +19626,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -17364,20 +19637,20 @@ save_LIBS=$LIBS
 
     CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
     LDFLAGS="$LDFLAGS $ZLIB_LIBS"
-    for ac_header in zlib.h
+           for ac_header in zlib.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_zlib_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_ZLIB_H 1
-_ACEOF
+  ac_fn_c_check_header_compile "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
+if test "x$ac_cv_header_zlib_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_ZLIB_H 1" >>confdefs.h
 
       py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gzread in -lz" >&5
-$as_echo_n "checking for gzread in -lz... " >&6; }
-if ${ac_cv_lib_z_gzread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gzread in -lz" >&5
+printf %s "checking for gzread in -lz... " >&6; }
+if test ${ac_cv_lib_z_gzread+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lz  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17386,54 +19659,54 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char gzread ();
 int
-main ()
+main (void)
 {
 return gzread ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_z_gzread=yes
-else
+else $as_nop
   ac_cv_lib_z_gzread=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_gzread" >&5
-$as_echo "$ac_cv_lib_z_gzread" >&6; }
-if test "x$ac_cv_lib_z_gzread" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_gzread" >&5
+printf "%s\n" "$ac_cv_lib_z_gzread" >&6; }
+if test "x$ac_cv_lib_z_gzread" = xyes
+then :
   have_zlib=yes
-else
+else $as_nop
   have_zlib=no
 fi
 
 LIBS=$py_check_lib_save_LIBS
 
 
-else
+else $as_nop
   have_zlib=no
 fi
 
 done
-
-    if test "x$have_zlib" = xyes; then :
+    if test "x$have_zlib" = xyes
+then :
 
       ZLIB_CFLAGS=${ZLIB_CFLAGS-""}
       ZLIB_LIBS=${ZLIB_LIBS-"-lz"}
       py_check_lib_save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inflateCopy in -lz" >&5
-$as_echo_n "checking for inflateCopy in -lz... " >&6; }
-if ${ac_cv_lib_z_inflateCopy+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inflateCopy in -lz" >&5
+printf %s "checking for inflateCopy in -lz... " >&6; }
+if test ${ac_cv_lib_z_inflateCopy+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lz  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17442,31 +19715,30 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char inflateCopy ();
 int
-main ()
+main (void)
 {
 return inflateCopy ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_z_inflateCopy=yes
-else
+else $as_nop
   ac_cv_lib_z_inflateCopy=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_inflateCopy" >&5
-$as_echo "$ac_cv_lib_z_inflateCopy" >&6; }
-if test "x$ac_cv_lib_z_inflateCopy" = xyes; then :
-  $as_echo "#define HAVE_ZLIB_COPY 1" >>confdefs.h
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_inflateCopy" >&5
+printf "%s\n" "$ac_cv_lib_z_inflateCopy" >&6; }
+if test "x$ac_cv_lib_z_inflateCopy" = xyes
+then :
+  printf "%s\n" "#define HAVE_ZLIB_COPY 1" >>confdefs.h
 
 fi
 
@@ -17485,16 +19757,17 @@ LIBS=$save_LIBS
 else
 	ZLIB_CFLAGS=$pkg_cv_ZLIB_CFLAGS
 	ZLIB_LIBS=$pkg_cv_ZLIB_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
   have_zlib=yes
-    $as_echo "#define HAVE_ZLIB_COPY 1" >>confdefs.h
+    printf "%s\n" "#define HAVE_ZLIB_COPY 1" >>confdefs.h
 
 
 fi
 
-if test "x$have_zlib" = xyes; then :
+if test "x$have_zlib" = xyes
+then :
 
   BINASCII_CFLAGS="-DUSE_ZLIB_CRC32 $ZLIB_CFLAGS"
   BINASCII_LIBS="$ZLIB_LIBS"
@@ -17504,7 +19777,8 @@ fi
 
 
 
-  if test "$ac_sys_system" = "Emscripten" -a -z "$BZIP2_CFLAGS" -a -z "$BZIP2_LIBS"; then :
+  if test "$ac_sys_system" = "Emscripten" -a -z "$BZIP2_CFLAGS" -a -z "$BZIP2_LIBS"
+then :
 
     BZIP2_CFLAGS="-sUSE_BZIP2"
     BZIP2_LIBS="-sUSE_BZIP2"
@@ -17516,17 +19790,17 @@ fi
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BZIP2" >&5
-$as_echo_n "checking for BZIP2... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bzip2" >&5
+printf %s "checking for bzip2... " >&6; }
 
 if test -n "$BZIP2_CFLAGS"; then
     pkg_cv_BZIP2_CFLAGS="$BZIP2_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bzip2\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bzip2\""; } >&5
   ($PKG_CONFIG --exists --print-errors "bzip2") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_BZIP2_CFLAGS=`$PKG_CONFIG --cflags "bzip2" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -17540,10 +19814,10 @@ if test -n "$BZIP2_LIBS"; then
     pkg_cv_BZIP2_LIBS="$BZIP2_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bzip2\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bzip2\""; } >&5
   ($PKG_CONFIG --exists --print-errors "bzip2") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_BZIP2_LIBS=`$PKG_CONFIG --libs "bzip2" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -17557,8 +19831,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -17582,19 +19856,19 @@ save_LIBS=$LIBS
 
     CPPFLAGS="$CPPFLAGS $BZIP2_CFLAGS"
     LDFLAGS="$LDFLAGS $BZIP2_LIBS"
-    for ac_header in bzlib.h
+           for ac_header in bzlib.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "bzlib.h" "ac_cv_header_bzlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_bzlib_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_BZLIB_H 1
-_ACEOF
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for BZ2_bzCompress in -lbz2" >&5
-$as_echo_n "checking for BZ2_bzCompress in -lbz2... " >&6; }
-if ${ac_cv_lib_bz2_BZ2_bzCompress+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "bzlib.h" "ac_cv_header_bzlib_h" "$ac_includes_default"
+if test "x$ac_cv_header_bzlib_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_BZLIB_H 1" >>confdefs.h
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for BZ2_bzCompress in -lbz2" >&5
+printf %s "checking for BZ2_bzCompress in -lbz2... " >&6; }
+if test ${ac_cv_lib_bz2_BZ2_bzCompress+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lbz2  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17603,43 +19877,42 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char BZ2_bzCompress ();
 int
-main ()
+main (void)
 {
 return BZ2_bzCompress ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_bz2_BZ2_bzCompress=yes
-else
+else $as_nop
   ac_cv_lib_bz2_BZ2_bzCompress=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bz2_BZ2_bzCompress" >&5
-$as_echo "$ac_cv_lib_bz2_BZ2_bzCompress" >&6; }
-if test "x$ac_cv_lib_bz2_BZ2_bzCompress" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bz2_BZ2_bzCompress" >&5
+printf "%s\n" "$ac_cv_lib_bz2_BZ2_bzCompress" >&6; }
+if test "x$ac_cv_lib_bz2_BZ2_bzCompress" = xyes
+then :
   have_bzip2=yes
-else
+else $as_nop
   have_bzip2=no
 fi
 
 
-else
+else $as_nop
   have_bzip2=no
 fi
 
 done
-
-    if test "x$have_bzip2" = xyes; then :
+    if test "x$have_bzip2" = xyes
+then :
 
       BZIP2_CFLAGS=${BZIP2_CFLAGS-""}
       BZIP2_LIBS=${BZIP2_LIBS-"-lbz2"}
@@ -17654,8 +19927,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -17665,19 +19938,19 @@ save_LIBS=$LIBS
 
     CPPFLAGS="$CPPFLAGS $BZIP2_CFLAGS"
     LDFLAGS="$LDFLAGS $BZIP2_LIBS"
-    for ac_header in bzlib.h
+           for ac_header in bzlib.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "bzlib.h" "ac_cv_header_bzlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_bzlib_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_BZLIB_H 1
-_ACEOF
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for BZ2_bzCompress in -lbz2" >&5
-$as_echo_n "checking for BZ2_bzCompress in -lbz2... " >&6; }
-if ${ac_cv_lib_bz2_BZ2_bzCompress+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "bzlib.h" "ac_cv_header_bzlib_h" "$ac_includes_default"
+if test "x$ac_cv_header_bzlib_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_BZLIB_H 1" >>confdefs.h
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for BZ2_bzCompress in -lbz2" >&5
+printf %s "checking for BZ2_bzCompress in -lbz2... " >&6; }
+if test ${ac_cv_lib_bz2_BZ2_bzCompress+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lbz2  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17686,43 +19959,42 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char BZ2_bzCompress ();
 int
-main ()
+main (void)
 {
 return BZ2_bzCompress ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_bz2_BZ2_bzCompress=yes
-else
+else $as_nop
   ac_cv_lib_bz2_BZ2_bzCompress=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bz2_BZ2_bzCompress" >&5
-$as_echo "$ac_cv_lib_bz2_BZ2_bzCompress" >&6; }
-if test "x$ac_cv_lib_bz2_BZ2_bzCompress" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bz2_BZ2_bzCompress" >&5
+printf "%s\n" "$ac_cv_lib_bz2_BZ2_bzCompress" >&6; }
+if test "x$ac_cv_lib_bz2_BZ2_bzCompress" = xyes
+then :
   have_bzip2=yes
-else
+else $as_nop
   have_bzip2=no
 fi
 
 
-else
+else $as_nop
   have_bzip2=no
 fi
 
 done
-
-    if test "x$have_bzip2" = xyes; then :
+    if test "x$have_bzip2" = xyes
+then :
 
       BZIP2_CFLAGS=${BZIP2_CFLAGS-""}
       BZIP2_LIBS=${BZIP2_LIBS-"-lbz2"}
@@ -17739,24 +20011,24 @@ LIBS=$save_LIBS
 else
 	BZIP2_CFLAGS=$pkg_cv_BZIP2_CFLAGS
 	BZIP2_LIBS=$pkg_cv_BZIP2_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	have_bzip2=yes
 fi
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBLZMA" >&5
-$as_echo_n "checking for LIBLZMA... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for liblzma" >&5
+printf %s "checking for liblzma... " >&6; }
 
 if test -n "$LIBLZMA_CFLAGS"; then
     pkg_cv_LIBLZMA_CFLAGS="$LIBLZMA_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"liblzma\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"liblzma\""; } >&5
   ($PKG_CONFIG --exists --print-errors "liblzma") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBLZMA_CFLAGS=`$PKG_CONFIG --cflags "liblzma" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -17770,10 +20042,10 @@ if test -n "$LIBLZMA_LIBS"; then
     pkg_cv_LIBLZMA_LIBS="$LIBLZMA_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"liblzma\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"liblzma\""; } >&5
   ($PKG_CONFIG --exists --print-errors "liblzma") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBLZMA_LIBS=`$PKG_CONFIG --libs "liblzma" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -17787,8 +20059,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -17812,19 +20084,19 @@ save_LIBS=$LIBS
 
     CPPFLAGS="$CPPFLAGS $LIBLZMA_CFLAGS"
     LDFLAGS="$LDFLAGS $LIBLZMA_LIBS"
-    for ac_header in lzma.h
+           for ac_header in lzma.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "lzma.h" "ac_cv_header_lzma_h" "$ac_includes_default"
-if test "x$ac_cv_header_lzma_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LZMA_H 1
-_ACEOF
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for lzma_easy_encoder in -llzma" >&5
-$as_echo_n "checking for lzma_easy_encoder in -llzma... " >&6; }
-if ${ac_cv_lib_lzma_lzma_easy_encoder+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "lzma.h" "ac_cv_header_lzma_h" "$ac_includes_default"
+if test "x$ac_cv_header_lzma_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LZMA_H 1" >>confdefs.h
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for lzma_easy_encoder in -llzma" >&5
+printf %s "checking for lzma_easy_encoder in -llzma... " >&6; }
+if test ${ac_cv_lib_lzma_lzma_easy_encoder+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-llzma  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17833,43 +20105,42 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char lzma_easy_encoder ();
 int
-main ()
+main (void)
 {
 return lzma_easy_encoder ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_lzma_lzma_easy_encoder=yes
-else
+else $as_nop
   ac_cv_lib_lzma_lzma_easy_encoder=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lzma_lzma_easy_encoder" >&5
-$as_echo "$ac_cv_lib_lzma_lzma_easy_encoder" >&6; }
-if test "x$ac_cv_lib_lzma_lzma_easy_encoder" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lzma_lzma_easy_encoder" >&5
+printf "%s\n" "$ac_cv_lib_lzma_lzma_easy_encoder" >&6; }
+if test "x$ac_cv_lib_lzma_lzma_easy_encoder" = xyes
+then :
   have_liblzma=yes
-else
+else $as_nop
   have_liblzma=no
 fi
 
 
-else
+else $as_nop
   have_liblzma=no
 fi
 
 done
-
-    if test "x$have_liblzma" = xyes; then :
+    if test "x$have_liblzma" = xyes
+then :
 
       LIBLZMA_CFLAGS=${LIBLZMA_CFLAGS-""}
       LIBLZMA_LIBS=${LIBLZMA_LIBS-"-llzma"}
@@ -17884,8 +20155,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -17895,19 +20166,19 @@ save_LIBS=$LIBS
 
     CPPFLAGS="$CPPFLAGS $LIBLZMA_CFLAGS"
     LDFLAGS="$LDFLAGS $LIBLZMA_LIBS"
-    for ac_header in lzma.h
+           for ac_header in lzma.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "lzma.h" "ac_cv_header_lzma_h" "$ac_includes_default"
-if test "x$ac_cv_header_lzma_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LZMA_H 1
-_ACEOF
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for lzma_easy_encoder in -llzma" >&5
-$as_echo_n "checking for lzma_easy_encoder in -llzma... " >&6; }
-if ${ac_cv_lib_lzma_lzma_easy_encoder+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "lzma.h" "ac_cv_header_lzma_h" "$ac_includes_default"
+if test "x$ac_cv_header_lzma_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LZMA_H 1" >>confdefs.h
+
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for lzma_easy_encoder in -llzma" >&5
+printf %s "checking for lzma_easy_encoder in -llzma... " >&6; }
+if test ${ac_cv_lib_lzma_lzma_easy_encoder+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-llzma  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -17916,43 +20187,42 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char lzma_easy_encoder ();
 int
-main ()
+main (void)
 {
 return lzma_easy_encoder ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_lzma_lzma_easy_encoder=yes
-else
+else $as_nop
   ac_cv_lib_lzma_lzma_easy_encoder=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lzma_lzma_easy_encoder" >&5
-$as_echo "$ac_cv_lib_lzma_lzma_easy_encoder" >&6; }
-if test "x$ac_cv_lib_lzma_lzma_easy_encoder" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lzma_lzma_easy_encoder" >&5
+printf "%s\n" "$ac_cv_lib_lzma_lzma_easy_encoder" >&6; }
+if test "x$ac_cv_lib_lzma_lzma_easy_encoder" = xyes
+then :
   have_liblzma=yes
-else
+else $as_nop
   have_liblzma=no
 fi
 
 
-else
+else $as_nop
   have_liblzma=no
 fi
 
 done
-
-    if test "x$have_liblzma" = xyes; then :
+    if test "x$have_liblzma" = xyes
+then :
 
       LIBLZMA_CFLAGS=${LIBLZMA_CFLAGS-""}
       LIBLZMA_LIBS=${LIBLZMA_LIBS-"-llzma"}
@@ -17969,8 +20239,8 @@ LIBS=$save_LIBS
 else
 	LIBLZMA_CFLAGS=$pkg_cv_LIBLZMA_CFLAGS
 	LIBLZMA_LIBS=$pkg_cv_LIBLZMA_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 	have_liblzma=yes
 fi
 
@@ -17978,35 +20248,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for hstrerror" >&5
-$as_echo_n "checking for hstrerror... " >&6; }
-if ${ac_cv_func_hstrerror+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for hstrerror" >&5
+printf %s "checking for hstrerror... " >&6; }
+if test ${ac_cv_func_hstrerror+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 void *x=hstrerror
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_hstrerror=yes
-else
+else $as_nop
   ac_cv_func_hstrerror=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_hstrerror" >&5
-$as_echo "$ac_cv_func_hstrerror" >&6; }
-  if test "x$ac_cv_func_hstrerror" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_hstrerror" >&5
+printf "%s\n" "$ac_cv_func_hstrerror" >&6; }
+  if test "x$ac_cv_func_hstrerror" = xyes
+then :
 
-$as_echo "#define HAVE_HSTRERROR 1" >>confdefs.h
+printf "%s\n" "#define HAVE_HSTRERROR 1" >>confdefs.h
 
 fi
 
@@ -18014,35 +20287,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getservbyname" >&5
-$as_echo_n "checking for getservbyname... " >&6; }
-if ${ac_cv_func_getservbyname+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getservbyname" >&5
+printf %s "checking for getservbyname... " >&6; }
+if test ${ac_cv_func_getservbyname+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 void *x=getservbyname
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_getservbyname=yes
-else
+else $as_nop
   ac_cv_func_getservbyname=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getservbyname" >&5
-$as_echo "$ac_cv_func_getservbyname" >&6; }
-  if test "x$ac_cv_func_getservbyname" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getservbyname" >&5
+printf "%s\n" "$ac_cv_func_getservbyname" >&6; }
+  if test "x$ac_cv_func_getservbyname" = xyes
+then :
 
-$as_echo "#define HAVE_GETSERVBYNAME 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETSERVBYNAME 1" >>confdefs.h
 
 fi
 
@@ -18050,35 +20326,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getservbyport" >&5
-$as_echo_n "checking for getservbyport... " >&6; }
-if ${ac_cv_func_getservbyport+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getservbyport" >&5
+printf %s "checking for getservbyport... " >&6; }
+if test ${ac_cv_func_getservbyport+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 void *x=getservbyport
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_getservbyport=yes
-else
+else $as_nop
   ac_cv_func_getservbyport=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getservbyport" >&5
-$as_echo "$ac_cv_func_getservbyport" >&6; }
-  if test "x$ac_cv_func_getservbyport" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getservbyport" >&5
+printf "%s\n" "$ac_cv_func_getservbyport" >&6; }
+  if test "x$ac_cv_func_getservbyport" = xyes
+then :
 
-$as_echo "#define HAVE_GETSERVBYPORT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETSERVBYPORT 1" >>confdefs.h
 
 fi
 
@@ -18086,35 +20365,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname" >&5
-$as_echo_n "checking for gethostbyname... " >&6; }
-if ${ac_cv_func_gethostbyname+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gethostbyname" >&5
+printf %s "checking for gethostbyname... " >&6; }
+if test ${ac_cv_func_gethostbyname+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 void *x=gethostbyname
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_gethostbyname=yes
-else
+else $as_nop
   ac_cv_func_gethostbyname=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_gethostbyname" >&5
-$as_echo "$ac_cv_func_gethostbyname" >&6; }
-  if test "x$ac_cv_func_gethostbyname" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_gethostbyname" >&5
+printf "%s\n" "$ac_cv_func_gethostbyname" >&6; }
+  if test "x$ac_cv_func_gethostbyname" = xyes
+then :
 
-$as_echo "#define HAVE_GETHOSTBYNAME 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETHOSTBYNAME 1" >>confdefs.h
 
 fi
 
@@ -18122,35 +20404,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyaddr" >&5
-$as_echo_n "checking for gethostbyaddr... " >&6; }
-if ${ac_cv_func_gethostbyaddr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gethostbyaddr" >&5
+printf %s "checking for gethostbyaddr... " >&6; }
+if test ${ac_cv_func_gethostbyaddr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 void *x=gethostbyaddr
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_gethostbyaddr=yes
-else
+else $as_nop
   ac_cv_func_gethostbyaddr=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_gethostbyaddr" >&5
-$as_echo "$ac_cv_func_gethostbyaddr" >&6; }
-  if test "x$ac_cv_func_gethostbyaddr" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_gethostbyaddr" >&5
+printf "%s\n" "$ac_cv_func_gethostbyaddr" >&6; }
+  if test "x$ac_cv_func_gethostbyaddr" = xyes
+then :
 
-$as_echo "#define HAVE_GETHOSTBYADDR 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETHOSTBYADDR 1" >>confdefs.h
 
 fi
 
@@ -18158,35 +20443,38 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getprotobyname" >&5
-$as_echo_n "checking for getprotobyname... " >&6; }
-if ${ac_cv_func_getprotobyname+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getprotobyname" >&5
+printf %s "checking for getprotobyname... " >&6; }
+if test ${ac_cv_func_getprotobyname+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 void *x=getprotobyname
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_getprotobyname=yes
-else
+else $as_nop
   ac_cv_func_getprotobyname=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getprotobyname" >&5
-$as_echo "$ac_cv_func_getprotobyname" >&6; }
-  if test "x$ac_cv_func_getprotobyname" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getprotobyname" >&5
+printf "%s\n" "$ac_cv_func_getprotobyname" >&6; }
+  if test "x$ac_cv_func_getprotobyname" = xyes
+then :
 
-$as_echo "#define HAVE_GETPROTOBYNAME 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETPROTOBYNAME 1" >>confdefs.h
 
 fi
 
@@ -18197,11 +20485,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_aton" >&5
-$as_echo_n "checking for inet_aton... " >&6; }
-if ${ac_cv_func_inet_aton+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inet_aton" >&5
+printf %s "checking for inet_aton... " >&6; }
+if test ${ac_cv_func_inet_aton+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18211,26 +20500,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=inet_aton
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_inet_aton=yes
-else
+else $as_nop
   ac_cv_func_inet_aton=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_inet_aton" >&5
-$as_echo "$ac_cv_func_inet_aton" >&6; }
-  if test "x$ac_cv_func_inet_aton" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_inet_aton" >&5
+printf "%s\n" "$ac_cv_func_inet_aton" >&6; }
+  if test "x$ac_cv_func_inet_aton" = xyes
+then :
 
-$as_echo "#define HAVE_INET_ATON 1" >>confdefs.h
+printf "%s\n" "#define HAVE_INET_ATON 1" >>confdefs.h
 
 fi
 
@@ -18238,11 +20529,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_ntoa" >&5
-$as_echo_n "checking for inet_ntoa... " >&6; }
-if ${ac_cv_func_inet_ntoa+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inet_ntoa" >&5
+printf %s "checking for inet_ntoa... " >&6; }
+if test ${ac_cv_func_inet_ntoa+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18252,26 +20544,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=inet_ntoa
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_inet_ntoa=yes
-else
+else $as_nop
   ac_cv_func_inet_ntoa=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_inet_ntoa" >&5
-$as_echo "$ac_cv_func_inet_ntoa" >&6; }
-  if test "x$ac_cv_func_inet_ntoa" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_inet_ntoa" >&5
+printf "%s\n" "$ac_cv_func_inet_ntoa" >&6; }
+  if test "x$ac_cv_func_inet_ntoa" = xyes
+then :
 
-$as_echo "#define HAVE_INET_NTOA 1" >>confdefs.h
+printf "%s\n" "#define HAVE_INET_NTOA 1" >>confdefs.h
 
 fi
 
@@ -18279,11 +20573,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_pton" >&5
-$as_echo_n "checking for inet_pton... " >&6; }
-if ${ac_cv_func_inet_pton+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inet_pton" >&5
+printf %s "checking for inet_pton... " >&6; }
+if test ${ac_cv_func_inet_pton+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18293,26 +20588,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=inet_pton
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_inet_pton=yes
-else
+else $as_nop
   ac_cv_func_inet_pton=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_inet_pton" >&5
-$as_echo "$ac_cv_func_inet_pton" >&6; }
-  if test "x$ac_cv_func_inet_pton" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_inet_pton" >&5
+printf "%s\n" "$ac_cv_func_inet_pton" >&6; }
+  if test "x$ac_cv_func_inet_pton" = xyes
+then :
 
-$as_echo "#define HAVE_INET_PTON 1" >>confdefs.h
+printf "%s\n" "#define HAVE_INET_PTON 1" >>confdefs.h
 
 fi
 
@@ -18320,11 +20617,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getpeername" >&5
-$as_echo_n "checking for getpeername... " >&6; }
-if ${ac_cv_func_getpeername+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getpeername" >&5
+printf %s "checking for getpeername... " >&6; }
+if test ${ac_cv_func_getpeername+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18334,26 +20632,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=getpeername
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_getpeername=yes
-else
+else $as_nop
   ac_cv_func_getpeername=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getpeername" >&5
-$as_echo "$ac_cv_func_getpeername" >&6; }
-  if test "x$ac_cv_func_getpeername" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getpeername" >&5
+printf "%s\n" "$ac_cv_func_getpeername" >&6; }
+  if test "x$ac_cv_func_getpeername" = xyes
+then :
 
-$as_echo "#define HAVE_GETPEERNAME 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETPEERNAME 1" >>confdefs.h
 
 fi
 
@@ -18361,11 +20661,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getsockname" >&5
-$as_echo_n "checking for getsockname... " >&6; }
-if ${ac_cv_func_getsockname+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getsockname" >&5
+printf %s "checking for getsockname... " >&6; }
+if test ${ac_cv_func_getsockname+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18375,26 +20676,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=getsockname
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_getsockname=yes
-else
+else $as_nop
   ac_cv_func_getsockname=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getsockname" >&5
-$as_echo "$ac_cv_func_getsockname" >&6; }
-  if test "x$ac_cv_func_getsockname" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getsockname" >&5
+printf "%s\n" "$ac_cv_func_getsockname" >&6; }
+  if test "x$ac_cv_func_getsockname" = xyes
+then :
 
-$as_echo "#define HAVE_GETSOCKNAME 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETSOCKNAME 1" >>confdefs.h
 
 fi
 
@@ -18402,11 +20705,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for accept" >&5
-$as_echo_n "checking for accept... " >&6; }
-if ${ac_cv_func_accept+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for accept" >&5
+printf %s "checking for accept... " >&6; }
+if test ${ac_cv_func_accept+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18416,26 +20720,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=accept
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_accept=yes
-else
+else $as_nop
   ac_cv_func_accept=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_accept" >&5
-$as_echo "$ac_cv_func_accept" >&6; }
-  if test "x$ac_cv_func_accept" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_accept" >&5
+printf "%s\n" "$ac_cv_func_accept" >&6; }
+  if test "x$ac_cv_func_accept" = xyes
+then :
 
-$as_echo "#define HAVE_ACCEPT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_ACCEPT 1" >>confdefs.h
 
 fi
 
@@ -18443,11 +20749,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for bind" >&5
-$as_echo_n "checking for bind... " >&6; }
-if ${ac_cv_func_bind+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bind" >&5
+printf %s "checking for bind... " >&6; }
+if test ${ac_cv_func_bind+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18457,26 +20764,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=bind
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_bind=yes
-else
+else $as_nop
   ac_cv_func_bind=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_bind" >&5
-$as_echo "$ac_cv_func_bind" >&6; }
-  if test "x$ac_cv_func_bind" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_bind" >&5
+printf "%s\n" "$ac_cv_func_bind" >&6; }
+  if test "x$ac_cv_func_bind" = xyes
+then :
 
-$as_echo "#define HAVE_BIND 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BIND 1" >>confdefs.h
 
 fi
 
@@ -18484,11 +20793,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for connect" >&5
-$as_echo_n "checking for connect... " >&6; }
-if ${ac_cv_func_connect+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for connect" >&5
+printf %s "checking for connect... " >&6; }
+if test ${ac_cv_func_connect+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18498,26 +20808,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=connect
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_connect=yes
-else
+else $as_nop
   ac_cv_func_connect=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_connect" >&5
-$as_echo "$ac_cv_func_connect" >&6; }
-  if test "x$ac_cv_func_connect" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_connect" >&5
+printf "%s\n" "$ac_cv_func_connect" >&6; }
+  if test "x$ac_cv_func_connect" = xyes
+then :
 
-$as_echo "#define HAVE_CONNECT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CONNECT 1" >>confdefs.h
 
 fi
 
@@ -18525,11 +20837,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for listen" >&5
-$as_echo_n "checking for listen... " >&6; }
-if ${ac_cv_func_listen+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for listen" >&5
+printf %s "checking for listen... " >&6; }
+if test ${ac_cv_func_listen+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18539,26 +20852,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=listen
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_listen=yes
-else
+else $as_nop
   ac_cv_func_listen=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_listen" >&5
-$as_echo "$ac_cv_func_listen" >&6; }
-  if test "x$ac_cv_func_listen" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_listen" >&5
+printf "%s\n" "$ac_cv_func_listen" >&6; }
+  if test "x$ac_cv_func_listen" = xyes
+then :
 
-$as_echo "#define HAVE_LISTEN 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LISTEN 1" >>confdefs.h
 
 fi
 
@@ -18566,11 +20881,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for recvfrom" >&5
-$as_echo_n "checking for recvfrom... " >&6; }
-if ${ac_cv_func_recvfrom+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for recvfrom" >&5
+printf %s "checking for recvfrom... " >&6; }
+if test ${ac_cv_func_recvfrom+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18580,26 +20896,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=recvfrom
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_recvfrom=yes
-else
+else $as_nop
   ac_cv_func_recvfrom=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_recvfrom" >&5
-$as_echo "$ac_cv_func_recvfrom" >&6; }
-  if test "x$ac_cv_func_recvfrom" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_recvfrom" >&5
+printf "%s\n" "$ac_cv_func_recvfrom" >&6; }
+  if test "x$ac_cv_func_recvfrom" = xyes
+then :
 
-$as_echo "#define HAVE_RECVFROM 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RECVFROM 1" >>confdefs.h
 
 fi
 
@@ -18607,11 +20925,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sendto" >&5
-$as_echo_n "checking for sendto... " >&6; }
-if ${ac_cv_func_sendto+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sendto" >&5
+printf %s "checking for sendto... " >&6; }
+if test ${ac_cv_func_sendto+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18621,26 +20940,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=sendto
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_sendto=yes
-else
+else $as_nop
   ac_cv_func_sendto=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_sendto" >&5
-$as_echo "$ac_cv_func_sendto" >&6; }
-  if test "x$ac_cv_func_sendto" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_sendto" >&5
+printf "%s\n" "$ac_cv_func_sendto" >&6; }
+  if test "x$ac_cv_func_sendto" = xyes
+then :
 
-$as_echo "#define HAVE_SENDTO 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SENDTO 1" >>confdefs.h
 
 fi
 
@@ -18648,11 +20969,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for setsockopt" >&5
-$as_echo_n "checking for setsockopt... " >&6; }
-if ${ac_cv_func_setsockopt+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for setsockopt" >&5
+printf %s "checking for setsockopt... " >&6; }
+if test ${ac_cv_func_setsockopt+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18662,26 +20984,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=setsockopt
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_setsockopt=yes
-else
+else $as_nop
   ac_cv_func_setsockopt=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_setsockopt" >&5
-$as_echo "$ac_cv_func_setsockopt" >&6; }
-  if test "x$ac_cv_func_setsockopt" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_setsockopt" >&5
+printf "%s\n" "$ac_cv_func_setsockopt" >&6; }
+  if test "x$ac_cv_func_setsockopt" = xyes
+then :
 
-$as_echo "#define HAVE_SETSOCKOPT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SETSOCKOPT 1" >>confdefs.h
 
 fi
 
@@ -18689,11 +21013,12 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket" >&5
-$as_echo_n "checking for socket... " >&6; }
-if ${ac_cv_func_socket+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for socket" >&5
+printf %s "checking for socket... " >&6; }
+if test ${ac_cv_func_socket+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18703,26 +21028,28 @@ else
 #include <arpa/inet.h>
 
 int
-main ()
+main (void)
 {
 void *x=socket
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_socket=yes
-else
+else $as_nop
   ac_cv_func_socket=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_socket" >&5
-$as_echo "$ac_cv_func_socket" >&6; }
-  if test "x$ac_cv_func_socket" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_socket" >&5
+printf "%s\n" "$ac_cv_func_socket" >&6; }
+  if test "x$ac_cv_func_socket" = xyes
+then :
 
-$as_echo "#define HAVE_SOCKET 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SOCKET 1" >>confdefs.h
 
 fi
 
@@ -18732,11 +21059,12 @@ fi
 # On some systems, setgroups is in unistd.h, on others, in grp.h
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for setgroups" >&5
-$as_echo_n "checking for setgroups... " >&6; }
-if ${ac_cv_func_setgroups+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for setgroups" >&5
+printf %s "checking for setgroups... " >&6; }
+if test ${ac_cv_func_setgroups+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -18746,26 +21074,28 @@ else
 #endif
 
 int
-main ()
+main (void)
 {
 void *x=setgroups
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_setgroups=yes
-else
+else $as_nop
   ac_cv_func_setgroups=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_setgroups" >&5
-$as_echo "$ac_cv_func_setgroups" >&6; }
-  if test "x$ac_cv_func_setgroups" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_setgroups" >&5
+printf "%s\n" "$ac_cv_func_setgroups" >&6; }
+  if test "x$ac_cv_func_setgroups" = xyes
+then :
 
-$as_echo "#define HAVE_SETGROUPS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SETGROUPS 1" >>confdefs.h
 
 fi
 
@@ -18774,20 +21104,21 @@ fi
 
 # check for openpty, login_tty, and forkpty
 
-for ac_func in openpty
+
+  for ac_func in openpty
 do :
   ac_fn_c_check_func "$LINENO" "openpty" "ac_cv_func_openpty"
-if test "x$ac_cv_func_openpty" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_OPENPTY 1
-_ACEOF
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for openpty in -lutil" >&5
-$as_echo_n "checking for openpty in -lutil... " >&6; }
-if ${ac_cv_lib_util_openpty+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func_openpty" = xyes
+then :
+  printf "%s\n" "#define HAVE_OPENPTY 1" >>confdefs.h
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for openpty in -lutil" >&5
+printf %s "checking for openpty in -lutil... " >&6; }
+if test ${ac_cv_lib_util_openpty+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lutil  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -18796,410 +21127,84 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char openpty ();
 int
-main ()
+main (void)
 {
 return openpty ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_util_openpty=yes
-else
+else $as_nop
   ac_cv_lib_util_openpty=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_util_openpty" >&5
-$as_echo "$ac_cv_lib_util_openpty" >&6; }
-if test "x$ac_cv_lib_util_openpty" = xyes; then :
-  $as_echo "#define HAVE_OPENPTY 1" >>confdefs.h
- LIBS="$LIBS -lutil"
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for openpty in -lbsd" >&5
-$as_echo_n "checking for openpty in -lbsd... " >&6; }
-if ${ac_cv_lib_bsd_openpty+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lbsd  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char openpty ();
-int
-main ()
-{
-return openpty ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_bsd_openpty=yes
-else
-  ac_cv_lib_bsd_openpty=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_openpty" >&5
-$as_echo "$ac_cv_lib_bsd_openpty" >&6; }
-if test "x$ac_cv_lib_bsd_openpty" = xyes; then :
-  $as_echo "#define HAVE_OPENPTY 1" >>confdefs.h
- LIBS="$LIBS -lbsd"
-fi
-
-
-fi
-
-
-fi
-done
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing login_tty" >&5
-$as_echo_n "checking for library containing login_tty... " >&6; }
-if ${ac_cv_search_login_tty+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char login_tty ();
-int
-main ()
-{
-return login_tty ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' util; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_login_tty=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_login_tty+:} false; then :
-  break
-fi
-done
-if ${ac_cv_search_login_tty+:} false; then :
-
-else
-  ac_cv_search_login_tty=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_login_tty" >&5
-$as_echo "$ac_cv_search_login_tty" >&6; }
-ac_res=$ac_cv_search_login_tty
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-
-$as_echo "#define HAVE_LOGIN_TTY 1" >>confdefs.h
-
-
-fi
-
-for ac_func in forkpty
-do :
-  ac_fn_c_check_func "$LINENO" "forkpty" "ac_cv_func_forkpty"
-if test "x$ac_cv_func_forkpty" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_FORKPTY 1
-_ACEOF
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for forkpty in -lutil" >&5
-$as_echo_n "checking for forkpty in -lutil... " >&6; }
-if ${ac_cv_lib_util_forkpty+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lutil  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char forkpty ();
-int
-main ()
-{
-return forkpty ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_util_forkpty=yes
-else
-  ac_cv_lib_util_forkpty=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_util_forkpty" >&5
-$as_echo "$ac_cv_lib_util_forkpty" >&6; }
-if test "x$ac_cv_lib_util_forkpty" = xyes; then :
-  $as_echo "#define HAVE_FORKPTY 1" >>confdefs.h
- LIBS="$LIBS -lutil"
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for forkpty in -lbsd" >&5
-$as_echo_n "checking for forkpty in -lbsd... " >&6; }
-if ${ac_cv_lib_bsd_forkpty+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lbsd  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char forkpty ();
-int
-main ()
-{
-return forkpty ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_bsd_forkpty=yes
-else
-  ac_cv_lib_bsd_forkpty=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_forkpty" >&5
-$as_echo "$ac_cv_lib_bsd_forkpty" >&6; }
-if test "x$ac_cv_lib_bsd_forkpty" = xyes; then :
-  $as_echo "#define HAVE_FORKPTY 1" >>confdefs.h
- LIBS="$LIBS -lbsd"
-fi
-
-
-fi
-
-
-fi
-done
-
-
-# check for long file support functions
-for ac_func in fseek64 fseeko fstatvfs ftell64 ftello statvfs
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-ac_fn_c_check_func "$LINENO" "dup2" "ac_cv_func_dup2"
-if test "x$ac_cv_func_dup2" = xyes; then :
-  $as_echo "#define HAVE_DUP2 1" >>confdefs.h
-
-else
-  case " $LIBOBJS " in
-  *" dup2.$ac_objext "* ) ;;
-  *) LIBOBJS="$LIBOBJS dup2.$ac_objext"
- ;;
-esac
-
-fi
-
-
-for ac_func in getpgrp
-do :
-  ac_fn_c_check_func "$LINENO" "getpgrp" "ac_cv_func_getpgrp"
-if test "x$ac_cv_func_getpgrp" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_GETPGRP 1
-_ACEOF
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <unistd.h>
-int
-main ()
-{
-getpgrp(0);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-
-$as_echo "#define GETPGRP_HAVE_ARG 1" >>confdefs.h
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-fi
-done
-
-for ac_func in setpgrp
-do :
-  ac_fn_c_check_func "$LINENO" "setpgrp" "ac_cv_func_setpgrp"
-if test "x$ac_cv_func_setpgrp" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_SETPGRP 1
-_ACEOF
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_util_openpty" >&5
+printf "%s\n" "$ac_cv_lib_util_openpty" >&6; }
+if test "x$ac_cv_lib_util_openpty" = xyes
+then :
+  printf "%s\n" "#define HAVE_OPENPTY 1" >>confdefs.h
+ LIBS="$LIBS -lutil"
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for openpty in -lbsd" >&5
+printf %s "checking for openpty in -lbsd... " >&6; }
+if test ${ac_cv_lib_bsd_openpty+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lbsd  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <unistd.h>
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char openpty ();
 int
-main ()
+main (void)
 {
-setpgrp(0,0);
+return openpty ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-
-$as_echo "#define SETPGRP_HAVE_ARG 1" >>confdefs.h
-
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_bsd_openpty=yes
+else $as_nop
+  ac_cv_lib_bsd_openpty=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-done
-
-
-# check for namespace functions
-for ac_func in setns unshare
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_openpty" >&5
+printf "%s\n" "$ac_cv_lib_bsd_openpty" >&6; }
+if test "x$ac_cv_lib_bsd_openpty" = xyes
+then :
+  printf "%s\n" "#define HAVE_OPENPTY 1" >>confdefs.h
+ LIBS="$LIBS -lbsd"
 fi
-done
-
 
-
-
-
-pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBCRYPT" >&5
-$as_echo_n "checking for LIBCRYPT... " >&6; }
-
-if test -n "$LIBCRYPT_CFLAGS"; then
-    pkg_cv_LIBCRYPT_CFLAGS="$LIBCRYPT_CFLAGS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxcrypt >= 3.1.1\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "libxcrypt >= 3.1.1") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_LIBCRYPT_CFLAGS=`$PKG_CONFIG --cflags "libxcrypt >= 3.1.1" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
-fi
-if test -n "$LIBCRYPT_LIBS"; then
-    pkg_cv_LIBCRYPT_LIBS="$LIBCRYPT_LIBS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxcrypt >= 3.1.1\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "libxcrypt >= 3.1.1") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_LIBCRYPT_LIBS=`$PKG_CONFIG --libs "libxcrypt >= 3.1.1" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
 fi
 
-
-
-if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
-        _pkg_short_errors_supported=yes
-else
-        _pkg_short_errors_supported=no
 fi
-        if test $_pkg_short_errors_supported = yes; then
-	        LIBCRYPT_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libxcrypt >= 3.1.1" 2>&1`
-        else
-	        LIBCRYPT_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libxcrypt >= 3.1.1" 2>&1`
-        fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$LIBCRYPT_PKG_ERRORS" >&5
-
-
-  save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
 
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing crypt_r" >&5
-$as_echo_n "checking for library containing crypt_r... " >&6; }
-if ${ac_cv_search_crypt_r+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+done
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing login_tty" >&5
+printf %s "checking for library containing login_tty... " >&6; }
+if test ${ac_cv_search_login_tty+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -19207,232 +21212,292 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char crypt_r ();
+char login_tty ();
 int
-main ()
+main (void)
 {
-return crypt_r ();
+return login_tty ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' crypt; do
+for ac_lib in '' util
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_crypt_r=$ac_res
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_login_tty=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_crypt_r+:} false; then :
+  if test ${ac_cv_search_login_tty+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_crypt_r+:} false; then :
+if test ${ac_cv_search_login_tty+y}
+then :
 
-else
-  ac_cv_search_crypt_r=no
+else $as_nop
+  ac_cv_search_login_tty=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_crypt_r" >&5
-$as_echo "$ac_cv_search_crypt_r" >&6; }
-ac_res=$ac_cv_search_crypt_r
-if test "$ac_res" != no; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_login_tty" >&5
+printf "%s\n" "$ac_cv_search_login_tty" >&6; }
+ac_res=$ac_cv_search_login_tty
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
-      $as_echo "#define HAVE_CRYPT_R 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LOGIN_TTY 1" >>confdefs.h
 
-      if test "$ac_cv_search_crypt_r" = "none required"; then
-        libcrypt=
-      else
-        libcrypt="$ac_cv_search_crypt_r"
-      fi
-      LIBCRYPT_LIBS=${LIBCRYPT_LIBS-$libcrypt}
 
 fi
 
 
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-  save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing crypt_r" >&5
-$as_echo_n "checking for library containing crypt_r... " >&6; }
-if ${ac_cv_search_crypt_r+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
+  for ac_func in forkpty
+do :
+  ac_fn_c_check_func "$LINENO" "forkpty" "ac_cv_func_forkpty"
+if test "x$ac_cv_func_forkpty" = xyes
+then :
+  printf "%s\n" "#define HAVE_FORKPTY 1" >>confdefs.h
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for forkpty in -lutil" >&5
+printf %s "checking for forkpty in -lutil... " >&6; }
+if test ${ac_cv_lib_util_forkpty+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lutil  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char crypt_r ();
+char forkpty ();
 int
-main ()
+main (void)
 {
-return crypt_r ();
+return forkpty ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' crypt; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_crypt_r=$ac_res
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_util_forkpty=yes
+else $as_nop
+  ac_cv_lib_util_forkpty=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_crypt_r+:} false; then :
-  break
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-done
-if ${ac_cv_search_crypt_r+:} false; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_util_forkpty" >&5
+printf "%s\n" "$ac_cv_lib_util_forkpty" >&6; }
+if test "x$ac_cv_lib_util_forkpty" = xyes
+then :
+  printf "%s\n" "#define HAVE_FORKPTY 1" >>confdefs.h
+ LIBS="$LIBS -lutil"
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for forkpty in -lbsd" >&5
+printf %s "checking for forkpty in -lbsd... " >&6; }
+if test ${ac_cv_lib_bsd_forkpty+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lbsd  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
 
-else
-  ac_cv_search_crypt_r=no
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char forkpty ();
+int
+main (void)
+{
+return forkpty ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_bsd_forkpty=yes
+else $as_nop
+  ac_cv_lib_bsd_forkpty=no
 fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_forkpty" >&5
+printf "%s\n" "$ac_cv_lib_bsd_forkpty" >&6; }
+if test "x$ac_cv_lib_bsd_forkpty" = xyes
+then :
+  printf "%s\n" "#define HAVE_FORKPTY 1" >>confdefs.h
+ LIBS="$LIBS -lbsd"
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_crypt_r" >&5
-$as_echo "$ac_cv_search_crypt_r" >&6; }
-ac_res=$ac_cv_search_crypt_r
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-
-      $as_echo "#define HAVE_CRYPT_R 1" >>confdefs.h
 
-      if test "$ac_cv_search_crypt_r" = "none required"; then
-        libcrypt=
-      else
-        libcrypt="$ac_cv_search_crypt_r"
-      fi
-      LIBCRYPT_LIBS=${LIBCRYPT_LIBS-$libcrypt}
+fi
 
 fi
 
+done
 
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
+# check for long file support functions
+ac_fn_c_check_func "$LINENO" "fseek64" "ac_cv_func_fseek64"
+if test "x$ac_cv_func_fseek64" = xyes
+then :
+  printf "%s\n" "#define HAVE_FSEEK64 1" >>confdefs.h
 
+fi
+ac_fn_c_check_func "$LINENO" "fseeko" "ac_cv_func_fseeko"
+if test "x$ac_cv_func_fseeko" = xyes
+then :
+  printf "%s\n" "#define HAVE_FSEEKO 1" >>confdefs.h
 
+fi
+ac_fn_c_check_func "$LINENO" "fstatvfs" "ac_cv_func_fstatvfs"
+if test "x$ac_cv_func_fstatvfs" = xyes
+then :
+  printf "%s\n" "#define HAVE_FSTATVFS 1" >>confdefs.h
 
-else
-	LIBCRYPT_CFLAGS=$pkg_cv_LIBCRYPT_CFLAGS
-	LIBCRYPT_LIBS=$pkg_cv_LIBCRYPT_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+fi
+ac_fn_c_check_func "$LINENO" "ftell64" "ac_cv_func_ftell64"
+if test "x$ac_cv_func_ftell64" = xyes
+then :
+  printf "%s\n" "#define HAVE_FTELL64 1" >>confdefs.h
 
-  $as_echo "#define HAVE_CRYPT_R 1" >>confdefs.h
+fi
+ac_fn_c_check_func "$LINENO" "ftello" "ac_cv_func_ftello"
+if test "x$ac_cv_func_ftello" = xyes
+then :
+  printf "%s\n" "#define HAVE_FTELLO 1" >>confdefs.h
 
+fi
+ac_fn_c_check_func "$LINENO" "statvfs" "ac_cv_func_statvfs"
+if test "x$ac_cv_func_statvfs" = xyes
+then :
+  printf "%s\n" "#define HAVE_STATVFS 1" >>confdefs.h
 
 fi
 
-save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
 
+ac_fn_c_check_func "$LINENO" "dup2" "ac_cv_func_dup2"
+if test "x$ac_cv_func_dup2" = xyes
+then :
+  printf "%s\n" "#define HAVE_DUP2 1" >>confdefs.h
 
-  CPPFLAGS="$CPPFLAGS $LIBCRYPT_CFLAGS"
-  LIBS="$LIBCRYPT_LIBS $LIBS"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for crypt or crypt_r" >&5
-$as_echo_n "checking for crypt or crypt_r... " >&6; }
-if ${ac_cv_crypt_crypt+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+else $as_nop
+  case " $LIBOBJS " in
+  *" dup2.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS dup2.$ac_objext"
+ ;;
+esac
 
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
+fi
 
-        #ifdef HAVE_CRYPT_H
-          #include <crypt.h>
-        #endif
-        #include <unistd.h>
 
+  for ac_func in getpgrp
+do :
+  ac_fn_c_check_func "$LINENO" "getpgrp" "ac_cv_func_getpgrp"
+if test "x$ac_cv_func_getpgrp" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETPGRP 1" >>confdefs.h
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
 int
-main ()
+main (void)
 {
+getpgrp(0);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-        #ifdef HAVE_CRYPT_R
-          void *x = crypt_r;
-        #else
-          void *x = crypt;
-        #endif
+printf "%s\n" "#define GETPGRP_HAVE_ARG 1" >>confdefs.h
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+done
 
+  for ac_func in setpgrp
+do :
+  ac_fn_c_check_func "$LINENO" "setpgrp" "ac_cv_func_setpgrp"
+if test "x$ac_cv_func_setpgrp" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETPGRP 1" >>confdefs.h
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <unistd.h>
+int
+main (void)
+{
+setpgrp(0,0);
   ;
   return 0;
 }
-
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_crypt_crypt=yes
-else
-  ac_cv_crypt_crypt=no
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+printf "%s\n" "#define SETPGRP_HAVE_ARG 1" >>confdefs.h
+
 fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+done
+
+# check for namespace functions
+ac_fn_c_check_func "$LINENO" "setns" "ac_cv_func_setns"
+if test "x$ac_cv_func_setns" = xyes
+then :
+  printf "%s\n" "#define HAVE_SETNS 1" >>confdefs.h
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_crypt_crypt" >&5
-$as_echo "$ac_cv_crypt_crypt" >&6; }
+ac_fn_c_check_func "$LINENO" "unshare" "ac_cv_func_unshare"
+if test "x$ac_cv_func_unshare" = xyes
+then :
+  printf "%s\n" "#define HAVE_UNSHARE 1" >>confdefs.h
 
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
+fi
 
 
 
-for ac_func in clock_gettime
+  for ac_func in clock_gettime
 do :
   ac_fn_c_check_func "$LINENO" "clock_gettime" "ac_cv_func_clock_gettime"
-if test "x$ac_cv_func_clock_gettime" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_CLOCK_GETTIME 1
-_ACEOF
-
-else
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_gettime in -lrt" >&5
-$as_echo_n "checking for clock_gettime in -lrt... " >&6; }
-if ${ac_cv_lib_rt_clock_gettime+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func_clock_gettime" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOCK_GETTIME 1" >>confdefs.h
+
+else $as_nop
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clock_gettime in -lrt" >&5
+printf %s "checking for clock_gettime in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_clock_gettime+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lrt  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -19441,60 +21506,60 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char clock_gettime ();
 int
-main ()
+main (void)
 {
 return clock_gettime ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_rt_clock_gettime=yes
-else
+else $as_nop
   ac_cv_lib_rt_clock_gettime=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_gettime" >&5
-$as_echo "$ac_cv_lib_rt_clock_gettime" >&6; }
-if test "x$ac_cv_lib_rt_clock_gettime" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_gettime" >&5
+printf "%s\n" "$ac_cv_lib_rt_clock_gettime" >&6; }
+if test "x$ac_cv_lib_rt_clock_gettime" = xyes
+then :
 
         LIBS="$LIBS -lrt"
-        $as_echo "#define HAVE_CLOCK_GETTIME 1" >>confdefs.h
+        printf "%s\n" "#define HAVE_CLOCK_GETTIME 1" >>confdefs.h
 
 
-$as_echo "#define TIMEMODULE_LIB rt" >>confdefs.h
+printf "%s\n" "#define TIMEMODULE_LIB rt" >>confdefs.h
 
 
 fi
 
 
 fi
+
 done
 
 
-for ac_func in clock_getres
+  for ac_func in clock_getres
 do :
   ac_fn_c_check_func "$LINENO" "clock_getres" "ac_cv_func_clock_getres"
-if test "x$ac_cv_func_clock_getres" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_CLOCK_GETRES 1
-_ACEOF
-
-else
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_getres in -lrt" >&5
-$as_echo_n "checking for clock_getres in -lrt... " >&6; }
-if ${ac_cv_lib_rt_clock_getres+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func_clock_getres" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOCK_GETRES 1" >>confdefs.h
+
+else $as_nop
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clock_getres in -lrt" >&5
+printf %s "checking for clock_getres in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_clock_getres+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lrt  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -19503,56 +21568,56 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char clock_getres ();
 int
-main ()
+main (void)
 {
 return clock_getres ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_rt_clock_getres=yes
-else
+else $as_nop
   ac_cv_lib_rt_clock_getres=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_getres" >&5
-$as_echo "$ac_cv_lib_rt_clock_getres" >&6; }
-if test "x$ac_cv_lib_rt_clock_getres" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_getres" >&5
+printf "%s\n" "$ac_cv_lib_rt_clock_getres" >&6; }
+if test "x$ac_cv_lib_rt_clock_getres" = xyes
+then :
 
-        $as_echo "#define HAVE_CLOCK_GETRES 1" >>confdefs.h
+        printf "%s\n" "#define HAVE_CLOCK_GETRES 1" >>confdefs.h
 
 
 fi
 
 
 fi
-done
 
+done
 
-for ac_func in clock_settime
-do :
-  ac_fn_c_check_func "$LINENO" "clock_settime" "ac_cv_func_clock_settime"
-if test "x$ac_cv_func_clock_settime" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_CLOCK_SETTIME 1
-_ACEOF
-
-else
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_settime in -lrt" >&5
-$as_echo_n "checking for clock_settime in -lrt... " >&6; }
-if ${ac_cv_lib_rt_clock_settime+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  for ac_func in clock_settime
+do :
+  ac_fn_c_check_func "$LINENO" "clock_settime" "ac_cv_func_clock_settime"
+if test "x$ac_cv_func_clock_settime" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOCK_SETTIME 1" >>confdefs.h
+
+else $as_nop
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clock_settime in -lrt" >&5
+printf %s "checking for clock_settime in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_clock_settime+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lrt  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -19561,56 +21626,56 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char clock_settime ();
 int
-main ()
+main (void)
 {
 return clock_settime ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_rt_clock_settime=yes
-else
+else $as_nop
   ac_cv_lib_rt_clock_settime=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_settime" >&5
-$as_echo "$ac_cv_lib_rt_clock_settime" >&6; }
-if test "x$ac_cv_lib_rt_clock_settime" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_settime" >&5
+printf "%s\n" "$ac_cv_lib_rt_clock_settime" >&6; }
+if test "x$ac_cv_lib_rt_clock_settime" = xyes
+then :
 
-        $as_echo "#define HAVE_CLOCK_SETTIME 1" >>confdefs.h
+        printf "%s\n" "#define HAVE_CLOCK_SETTIME 1" >>confdefs.h
 
 
 fi
 
 
 fi
+
 done
 
 
-for ac_func in clock_nanosleep
+  for ac_func in clock_nanosleep
 do :
   ac_fn_c_check_func "$LINENO" "clock_nanosleep" "ac_cv_func_clock_nanosleep"
-if test "x$ac_cv_func_clock_nanosleep" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_CLOCK_NANOSLEEP 1
-_ACEOF
-
-else
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_nanosleep in -lrt" >&5
-$as_echo_n "checking for clock_nanosleep in -lrt... " >&6; }
-if ${ac_cv_lib_rt_clock_nanosleep+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func_clock_nanosleep" = xyes
+then :
+  printf "%s\n" "#define HAVE_CLOCK_NANOSLEEP 1" >>confdefs.h
+
+else $as_nop
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clock_nanosleep in -lrt" >&5
+printf %s "checking for clock_nanosleep in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_clock_nanosleep+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lrt  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -19619,56 +21684,56 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char clock_nanosleep ();
 int
-main ()
+main (void)
 {
 return clock_nanosleep ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_rt_clock_nanosleep=yes
-else
+else $as_nop
   ac_cv_lib_rt_clock_nanosleep=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_nanosleep" >&5
-$as_echo "$ac_cv_lib_rt_clock_nanosleep" >&6; }
-if test "x$ac_cv_lib_rt_clock_nanosleep" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_nanosleep" >&5
+printf "%s\n" "$ac_cv_lib_rt_clock_nanosleep" >&6; }
+if test "x$ac_cv_lib_rt_clock_nanosleep" = xyes
+then :
 
-        $as_echo "#define HAVE_CLOCK_NANOSLEEP 1" >>confdefs.h
+        printf "%s\n" "#define HAVE_CLOCK_NANOSLEEP 1" >>confdefs.h
 
 
 fi
 
 
 fi
+
 done
 
 
-for ac_func in nanosleep
+  for ac_func in nanosleep
 do :
   ac_fn_c_check_func "$LINENO" "nanosleep" "ac_cv_func_nanosleep"
-if test "x$ac_cv_func_nanosleep" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_NANOSLEEP 1
-_ACEOF
-
-else
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for nanosleep in -lrt" >&5
-$as_echo_n "checking for nanosleep in -lrt... " >&6; }
-if ${ac_cv_lib_rt_nanosleep+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func_nanosleep" = xyes
+then :
+  printf "%s\n" "#define HAVE_NANOSLEEP 1" >>confdefs.h
+
+else $as_nop
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for nanosleep in -lrt" >&5
+printf %s "checking for nanosleep in -lrt... " >&6; }
+if test ${ac_cv_lib_rt_nanosleep+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lrt  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -19677,46 +21742,46 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char nanosleep ();
 int
-main ()
+main (void)
 {
 return nanosleep ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_rt_nanosleep=yes
-else
+else $as_nop
   ac_cv_lib_rt_nanosleep=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_nanosleep" >&5
-$as_echo "$ac_cv_lib_rt_nanosleep" >&6; }
-if test "x$ac_cv_lib_rt_nanosleep" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_nanosleep" >&5
+printf "%s\n" "$ac_cv_lib_rt_nanosleep" >&6; }
+if test "x$ac_cv_lib_rt_nanosleep" = xyes
+then :
 
-        $as_echo "#define HAVE_NANOSLEEP 1" >>confdefs.h
+        printf "%s\n" "#define HAVE_NANOSLEEP 1" >>confdefs.h
 
 
 fi
 
 
 fi
-done
 
+done
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for major, minor, and makedev" >&5
-$as_echo_n "checking for major, minor, and makedev... " >&6; }
-if ${ac_cv_device_macros+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for major, minor, and makedev" >&5
+printf %s "checking for major, minor, and makedev... " >&6; }
+if test ${ac_cv_device_macros+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -19730,7 +21795,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 #endif
 
 int
-main ()
+main (void)
 {
 
   makedev(major(0),minor(0));
@@ -19739,36 +21804,39 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_device_macros=yes
-else
+else $as_nop
   ac_cv_device_macros=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_device_macros" >&5
-$as_echo "$ac_cv_device_macros" >&6; }
-if test "x$ac_cv_device_macros" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_device_macros" >&5
+printf "%s\n" "$ac_cv_device_macros" >&6; }
+if test "x$ac_cv_device_macros" = xyes
+then :
 
 
-$as_echo "#define HAVE_DEVICE_MACROS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_DEVICE_MACROS 1" >>confdefs.h
 
 
 fi
 
 
-$as_echo "#define SYS_SELECT_WITH_SYS_TIME 1" >>confdefs.h
+printf "%s\n" "#define SYS_SELECT_WITH_SYS_TIME 1" >>confdefs.h
 
 
 # On OSF/1 V5.1, getaddrinfo is available, but a define
 # for [no]getaddrinfo in netdb.h.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for getaddrinfo" >&5
-$as_echo_n "checking for getaddrinfo... " >&6; }
-if ${ac_cv_func_getaddrinfo+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getaddrinfo" >&5
+printf %s "checking for getaddrinfo... " >&6; }
+if test ${ac_cv_func_getaddrinfo+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -19779,40 +21847,44 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 #include <stdio.h>
 
 int
-main ()
+main (void)
 {
 getaddrinfo(NULL, NULL, NULL, NULL);
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_func_getaddrinfo=yes
-else
+else $as_nop
   ac_cv_func_getaddrinfo=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getaddrinfo" >&5
-$as_echo "$ac_cv_func_getaddrinfo" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getaddrinfo" >&5
+printf "%s\n" "$ac_cv_func_getaddrinfo" >&6; }
 
-if test "x$ac_cv_func_getaddrinfo" = xyes; then :
+if test "x$ac_cv_func_getaddrinfo" = xyes
+then :
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking getaddrinfo bug" >&5
-$as_echo_n "checking getaddrinfo bug... " >&6; }
-if ${ac_cv_buggy_getaddrinfo+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking getaddrinfo bug" >&5
+printf %s "checking getaddrinfo bug... " >&6; }
+if test ${ac_cv_buggy_getaddrinfo+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
 
 if test "${enable_ipv6+set}" = set; then
   ac_cv_buggy_getaddrinfo="no -- configured with --(en|dis)able-ipv6"
 else
   ac_cv_buggy_getaddrinfo=yes
 fi
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -19906,9 +21978,10 @@ int main(void)
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_buggy_getaddrinfo=no
-else
+else $as_nop
   ac_cv_buggy_getaddrinfo=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -19916,58 +21989,48 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_buggy_getaddrinfo" >&5
-$as_echo "$ac_cv_buggy_getaddrinfo" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_buggy_getaddrinfo" >&5
+printf "%s\n" "$ac_cv_buggy_getaddrinfo" >&6; }
 
 
 fi
 
 if test "$ac_cv_func_getaddrinfo" = no -o "$ac_cv_buggy_getaddrinfo" = yes
 then
-  if test "x$ipv6" = xyes; then :
+  if test "x$ipv6" = xyes
+then :
 
     as_fn_error $? "You must get working getaddrinfo() function or pass the \"--disable-ipv6\" option to configure." "$LINENO" 5
 
 fi
 else
 
-$as_echo "#define HAVE_GETADDRINFO 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETADDRINFO 1" >>confdefs.h
 
 fi
 
-for ac_func in getnameinfo
-do :
-  ac_fn_c_check_func "$LINENO" "getnameinfo" "ac_cv_func_getnameinfo"
-if test "x$ac_cv_func_getnameinfo" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_GETNAMEINFO 1
-_ACEOF
+ac_fn_c_check_func "$LINENO" "getnameinfo" "ac_cv_func_getnameinfo"
+if test "x$ac_cv_func_getnameinfo" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETNAMEINFO 1" >>confdefs.h
 
 fi
-done
-
-
-if test "x$ac_cv_header_sys_time_h" = xyes; then :
-
 
-$as_echo "#define TIME_WITH_SYS_TIME 1" >>confdefs.h
-
-
-fi
 
 # checks for structures
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether struct tm is in sys/time.h or time.h" >&5
-$as_echo_n "checking whether struct tm is in sys/time.h or time.h... " >&6; }
-if ${ac_cv_struct_tm+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether struct tm is in sys/time.h or time.h" >&5
+printf %s "checking whether struct tm is in sys/time.h or time.h... " >&6; }
+if test ${ac_cv_struct_tm+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/types.h>
 #include <time.h>
 
 int
-main ()
+main (void)
 {
 struct tm tm;
 				     int *p = &tm.tm_sec;
@@ -19976,18 +22039,19 @@ struct tm tm;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_struct_tm=time.h
-else
+else $as_nop
   ac_cv_struct_tm=sys/time.h
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_tm" >&5
-$as_echo "$ac_cv_struct_tm" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_tm" >&5
+printf "%s\n" "$ac_cv_struct_tm" >&6; }
 if test $ac_cv_struct_tm = sys/time.h; then
 
-$as_echo "#define TM_IN_SYS_TIME 1" >>confdefs.h
+printf "%s\n" "#define TM_IN_SYS_TIME 1" >>confdefs.h
 
 fi
 
@@ -19995,37 +22059,35 @@ ac_fn_c_check_member "$LINENO" "struct tm" "tm_zone" "ac_cv_member_struct_tm_tm_
 #include <$ac_cv_struct_tm>
 
 "
-if test "x$ac_cv_member_struct_tm_tm_zone" = xyes; then :
+if test "x$ac_cv_member_struct_tm_tm_zone" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_TM_TM_ZONE 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_TM_TM_ZONE 1" >>confdefs.h
 
 
 fi
 
 if test "$ac_cv_member_struct_tm_tm_zone" = yes; then
 
-$as_echo "#define HAVE_TM_ZONE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_TM_ZONE 1" >>confdefs.h
 
 else
-  ac_fn_c_check_decl "$LINENO" "tzname" "ac_cv_have_decl_tzname" "#include <time.h>
-"
-if test "x$ac_cv_have_decl_tzname" = xyes; then :
+  ac_fn_check_decl "$LINENO" "tzname" "ac_cv_have_decl_tzname" "#include <time.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_tzname" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
+printf "%s\n" "#define HAVE_DECL_TZNAME $ac_have_decl" >>confdefs.h
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_TZNAME $ac_have_decl
-_ACEOF
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for tzname" >&5
-$as_echo_n "checking for tzname... " >&6; }
-if ${ac_cv_var_tzname+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for tzname" >&5
+printf %s "checking for tzname... " >&6; }
+if test ${ac_cv_var_tzname+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <time.h>
@@ -20034,86 +22096,81 @@ extern char *tzname[];
 #endif
 
 int
-main ()
+main (void)
 {
 return tzname[0][0];
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_var_tzname=yes
-else
+else $as_nop
   ac_cv_var_tzname=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_var_tzname" >&5
-$as_echo "$ac_cv_var_tzname" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_var_tzname" >&5
+printf "%s\n" "$ac_cv_var_tzname" >&6; }
   if test $ac_cv_var_tzname = yes; then
 
-$as_echo "#define HAVE_TZNAME 1" >>confdefs.h
+printf "%s\n" "#define HAVE_TZNAME 1" >>confdefs.h
 
   fi
 fi
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_rdev" "ac_cv_member_struct_stat_st_rdev" "$ac_includes_default"
-if test "x$ac_cv_member_struct_stat_st_rdev" = xyes; then :
+if test "x$ac_cv_member_struct_stat_st_rdev" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_STAT_ST_RDEV 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_RDEV 1" >>confdefs.h
 
 
 fi
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_blksize" "ac_cv_member_struct_stat_st_blksize" "$ac_includes_default"
-if test "x$ac_cv_member_struct_stat_st_blksize" = xyes; then :
+if test "x$ac_cv_member_struct_stat_st_blksize" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_STAT_ST_BLKSIZE 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_BLKSIZE 1" >>confdefs.h
 
 
 fi
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_flags" "ac_cv_member_struct_stat_st_flags" "$ac_includes_default"
-if test "x$ac_cv_member_struct_stat_st_flags" = xyes; then :
+if test "x$ac_cv_member_struct_stat_st_flags" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_STAT_ST_FLAGS 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_FLAGS 1" >>confdefs.h
 
 
 fi
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_gen" "ac_cv_member_struct_stat_st_gen" "$ac_includes_default"
-if test "x$ac_cv_member_struct_stat_st_gen" = xyes; then :
+if test "x$ac_cv_member_struct_stat_st_gen" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_STAT_ST_GEN 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_GEN 1" >>confdefs.h
 
 
 fi
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_birthtime" "ac_cv_member_struct_stat_st_birthtime" "$ac_includes_default"
-if test "x$ac_cv_member_struct_stat_st_birthtime" = xyes; then :
+if test "x$ac_cv_member_struct_stat_st_birthtime" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_STAT_ST_BIRTHTIME 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_BIRTHTIME 1" >>confdefs.h
 
 
 fi
 
 ac_fn_c_check_member "$LINENO" "struct stat" "st_blocks" "ac_cv_member_struct_stat_st_blocks" "$ac_includes_default"
-if test "x$ac_cv_member_struct_stat_st_blocks" = xyes; then :
+if test "x$ac_cv_member_struct_stat_st_blocks" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_STAT_ST_BLOCKS 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_STAT_ST_BLOCKS 1" >>confdefs.h
 
 
 fi
@@ -20123,11 +22180,10 @@ ac_fn_c_check_member "$LINENO" "struct passwd" "pw_gecos" "ac_cv_member_struct_p
   #include <pwd.h>
 
 "
-if test "x$ac_cv_member_struct_passwd_pw_gecos" = xyes; then :
+if test "x$ac_cv_member_struct_passwd_pw_gecos" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_PASSWD_PW_GECOS 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_PASSWD_PW_GECOS 1" >>confdefs.h
 
 
 fi
@@ -20136,11 +22192,10 @@ ac_fn_c_check_member "$LINENO" "struct passwd" "pw_passwd" "ac_cv_member_struct_
   #include <pwd.h>
 
 "
-if test "x$ac_cv_member_struct_passwd_pw_passwd" = xyes; then :
+if test "x$ac_cv_member_struct_passwd_pw_passwd" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_PASSWD_PW_PASSWD 1
-_ACEOF
+printf "%s\n" "#define HAVE_STRUCT_PASSWD_PW_PASSWD 1" >>confdefs.h
 
 
 fi
@@ -20148,118 +22203,124 @@ fi
 # Issue #21085: In Cygwin, siginfo_t does not have si_band field.
 ac_fn_c_check_member "$LINENO" "siginfo_t" "si_band" "ac_cv_member_siginfo_t_si_band" "#include <signal.h>
 "
-if test "x$ac_cv_member_siginfo_t_si_band" = xyes; then :
+if test "x$ac_cv_member_siginfo_t_si_band" = xyes
+then :
 
-cat >>confdefs.h <<_ACEOF
-#define HAVE_SIGINFO_T_SI_BAND 1
-_ACEOF
+printf "%s\n" "#define HAVE_SIGINFO_T_SI_BAND 1" >>confdefs.h
 
 
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for time.h that defines altzone" >&5
-$as_echo_n "checking for time.h that defines altzone... " >&6; }
-if ${ac_cv_header_time_altzone+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for time.h that defines altzone" >&5
+printf %s "checking for time.h that defines altzone... " >&6; }
+if test ${ac_cv_header_time_altzone+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <time.h>
 int
-main ()
+main (void)
 {
 return altzone;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_header_time_altzone=yes
-else
+else $as_nop
   ac_cv_header_time_altzone=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_time_altzone" >&5
-$as_echo "$ac_cv_header_time_altzone" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_time_altzone" >&5
+printf "%s\n" "$ac_cv_header_time_altzone" >&6; }
 if test $ac_cv_header_time_altzone = yes; then
 
-$as_echo "#define HAVE_ALTZONE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_ALTZONE 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for addrinfo" >&5
-$as_echo_n "checking for addrinfo... " >&6; }
-if ${ac_cv_struct_addrinfo+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for addrinfo" >&5
+printf %s "checking for addrinfo... " >&6; }
+if test ${ac_cv_struct_addrinfo+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <netdb.h>
 int
-main ()
+main (void)
 {
 struct addrinfo a
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_struct_addrinfo=yes
-else
+else $as_nop
   ac_cv_struct_addrinfo=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_addrinfo" >&5
-$as_echo "$ac_cv_struct_addrinfo" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_addrinfo" >&5
+printf "%s\n" "$ac_cv_struct_addrinfo" >&6; }
 if test $ac_cv_struct_addrinfo = yes; then
 
-$as_echo "#define HAVE_ADDRINFO 1" >>confdefs.h
+printf "%s\n" "#define HAVE_ADDRINFO 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sockaddr_storage" >&5
-$as_echo_n "checking for sockaddr_storage... " >&6; }
-if ${ac_cv_struct_sockaddr_storage+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sockaddr_storage" >&5
+printf %s "checking for sockaddr_storage... " >&6; }
+if test ${ac_cv_struct_sockaddr_storage+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #		include <sys/types.h>
 #		include <sys/socket.h>
 int
-main ()
+main (void)
 {
 struct sockaddr_storage s
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_struct_sockaddr_storage=yes
-else
+else $as_nop
   ac_cv_struct_sockaddr_storage=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_sockaddr_storage" >&5
-$as_echo "$ac_cv_struct_sockaddr_storage" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_sockaddr_storage" >&5
+printf "%s\n" "$ac_cv_struct_sockaddr_storage" >&6; }
 if test $ac_cv_struct_sockaddr_storage = yes; then
 
-$as_echo "#define HAVE_SOCKADDR_STORAGE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SOCKADDR_STORAGE 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sockaddr_alg" >&5
-$as_echo_n "checking for sockaddr_alg... " >&6; }
-if ${ac_cv_struct_sockaddr_alg+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sockaddr_alg" >&5
+printf %s "checking for sockaddr_alg... " >&6; }
+if test ${ac_cv_struct_sockaddr_alg+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -20267,40 +22328,42 @@ else
 #		include <sys/socket.h>
 #		include <linux/if_alg.h>
 int
-main ()
+main (void)
 {
 struct sockaddr_alg s
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_struct_sockaddr_alg=yes
-else
+else $as_nop
   ac_cv_struct_sockaddr_alg=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_sockaddr_alg" >&5
-$as_echo "$ac_cv_struct_sockaddr_alg" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_sockaddr_alg" >&5
+printf "%s\n" "$ac_cv_struct_sockaddr_alg" >&6; }
 if test $ac_cv_struct_sockaddr_alg = yes; then
 
-$as_echo "#define HAVE_SOCKADDR_ALG 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SOCKADDR_ALG 1" >>confdefs.h
 
 fi
 
 # checks for compiler characteristics
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
-$as_echo_n "checking for an ANSI C-conforming const... " >&6; }
-if ${ac_cv_c_const+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
+printf %s "checking for an ANSI C-conforming const... " >&6; }
+if test ${ac_cv_c_const+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
 #ifndef __cplusplus
@@ -20313,7 +22376,7 @@ main ()
   /* NEC SVR4.0.2 mips cc rejects this.  */
   struct point {int x, y;};
   static struct point const zero = {0,0};
-  /* AIX XL C 1.02.0.0 rejects this.
+  /* IBM XL C 1.02.0.0 rejects this.
      It does not let you subtract one const X* pointer from another in
      an arm of an if-expression whose if-part is not a constant
      expression */
@@ -20341,7 +22404,7 @@ main ()
     iptr p = 0;
     ++p;
   }
-  { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
+  { /* IBM XL C 1.02.0.0 rejects this sort of thing, saying
        "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
     struct s { int j; const int *ap[3]; } bx;
     struct s *b = &bx; b->j = 5;
@@ -20357,88 +22420,95 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_c_const=yes
-else
+else $as_nop
   ac_cv_c_const=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5
-$as_echo "$ac_cv_c_const" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5
+printf "%s\n" "$ac_cv_c_const" >&6; }
 if test $ac_cv_c_const = no; then
 
-$as_echo "#define const /**/" >>confdefs.h
+printf "%s\n" "#define const /**/" >>confdefs.h
 
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working signed char" >&5
-$as_echo_n "checking for working signed char... " >&6; }
-if ${ac_cv_working_signed_char_c+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working signed char" >&5
+printf %s "checking for working signed char... " >&6; }
+if test ${ac_cv_working_signed_char_c+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 signed char c;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_working_signed_char_c=yes
-else
+else $as_nop
   ac_cv_working_signed_char_c=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_signed_char_c" >&5
-$as_echo "$ac_cv_working_signed_char_c" >&6; }
-if test "x$ac_cv_working_signed_char_c" = xno; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_signed_char_c" >&5
+printf "%s\n" "$ac_cv_working_signed_char_c" >&6; }
+if test "x$ac_cv_working_signed_char_c" = xno
+then :
 
 
-$as_echo "#define signed /**/" >>confdefs.h
+printf "%s\n" "#define signed /**/" >>confdefs.h
 
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for prototypes" >&5
-$as_echo_n "checking for prototypes... " >&6; }
-if ${ac_cv_function_prototypes+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for prototypes" >&5
+printf %s "checking for prototypes... " >&6; }
+if test ${ac_cv_function_prototypes+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 int foo(int x) { return 0; }
 int
-main ()
+main (void)
 {
 return foo(10);
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_function_prototypes=yes
-else
+else $as_nop
   ac_cv_function_prototypes=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_function_prototypes" >&5
-$as_echo "$ac_cv_function_prototypes" >&6; }
-if test "x$ac_cv_function_prototypes" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_function_prototypes" >&5
+printf "%s\n" "$ac_cv_function_prototypes" >&6; }
+if test "x$ac_cv_function_prototypes" = xyes
+then :
 
 
-$as_echo "#define HAVE_PROTOTYPES 1" >>confdefs.h
+printf "%s\n" "#define HAVE_PROTOTYPES 1" >>confdefs.h
 
 
 fi
@@ -20447,11 +22517,12 @@ fi
 # check for socketpair
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for socketpair" >&5
-$as_echo_n "checking for socketpair... " >&6; }
-if ${ac_cv_func_socketpair+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for socketpair" >&5
+printf %s "checking for socketpair... " >&6; }
+if test ${ac_cv_func_socketpair+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -20459,26 +22530,28 @@ else
 #include <sys/socket.h>
 
 int
-main ()
+main (void)
 {
 void *x=socketpair
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_func_socketpair=yes
-else
+else $as_nop
   ac_cv_func_socketpair=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_socketpair" >&5
-$as_echo "$ac_cv_func_socketpair" >&6; }
-  if test "x$ac_cv_func_socketpair" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_socketpair" >&5
+printf "%s\n" "$ac_cv_func_socketpair" >&6; }
+  if test "x$ac_cv_func_socketpair" = xyes
+then :
 
-$as_echo "#define HAVE_SOCKETPAIR 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SOCKETPAIR 1" >>confdefs.h
 
 fi
 
@@ -20486,18 +22559,19 @@ fi
 
 
 # check if sockaddr has sa_len member
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if sockaddr has sa_len member" >&5
-$as_echo_n "checking if sockaddr has sa_len member... " >&6; }
-if ${ac_cv_struct_sockaddr_sa_len+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if sockaddr has sa_len member" >&5
+printf %s "checking if sockaddr has sa_len member... " >&6; }
+if test ${ac_cv_struct_sockaddr_sa_len+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/types.h>
 #include <sys/socket.h>
 int
-main ()
+main (void)
 {
 struct sockaddr x;
 x.sa_len = 0;
@@ -20505,20 +22579,22 @@ x.sa_len = 0;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_struct_sockaddr_sa_len=yes
-else
+else $as_nop
   ac_cv_struct_sockaddr_sa_len=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_sockaddr_sa_len" >&5
-$as_echo "$ac_cv_struct_sockaddr_sa_len" >&6; }
-if test "x$ac_cv_struct_sockaddr_sa_len" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_struct_sockaddr_sa_len" >&5
+printf "%s\n" "$ac_cv_struct_sockaddr_sa_len" >&6; }
+if test "x$ac_cv_struct_sockaddr_sa_len" = xyes
+then :
 
 
-$as_echo "#define HAVE_SOCKADDR_SA_LEN 1" >>confdefs.h
+printf "%s\n" "#define HAVE_SOCKADDR_SA_LEN 1" >>confdefs.h
 
 
 fi
@@ -20527,12 +22603,12 @@ fi
 
 
 ac_fn_c_check_func "$LINENO" "gethostbyname_r" "ac_cv_func_gethostbyname_r"
-if test "x$ac_cv_func_gethostbyname_r" = xyes; then :
-
-  $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
+if test "x$ac_cv_func_gethostbyname_r" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 6 args" >&5
-$as_echo_n "checking gethostbyname_r with 6 args... " >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 6 args" >&5
+printf %s "checking gethostbyname_r with 6 args... " >&6; }
   OLD_CFLAGS=$CFLAGS
   CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -20541,7 +22617,7 @@ $as_echo_n "checking gethostbyname_r with 6 args... " >&6; }
 #   include <netdb.h>
 
 int
-main ()
+main (void)
 {
 
     char *name;
@@ -20556,29 +22632,30 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-    $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
+    printf "%s\n" "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
 
 
-$as_echo "#define HAVE_GETHOSTBYNAME_R_6_ARG 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETHOSTBYNAME_R_6_ARG 1" >>confdefs.h
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-else
+else $as_nop
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 5 args" >&5
-$as_echo_n "checking gethostbyname_r with 5 args... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 5 args" >&5
+printf %s "checking gethostbyname_r with 5 args... " >&6; }
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #       include <netdb.h>
 
 int
-main ()
+main (void)
 {
 
         char *name;
@@ -20593,29 +22670,30 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-        $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
+        printf "%s\n" "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
 
 
-$as_echo "#define HAVE_GETHOSTBYNAME_R_5_ARG 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETHOSTBYNAME_R_5_ARG 1" >>confdefs.h
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-else
+else $as_nop
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 3 args" >&5
-$as_echo_n "checking gethostbyname_r with 3 args... " >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 3 args" >&5
+printf %s "checking gethostbyname_r with 3 args... " >&6; }
         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 #           include <netdb.h>
 
 int
-main ()
+main (void)
 {
 
             char *name;
@@ -20628,43 +22706,40 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
-            $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
+            printf "%s\n" "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
 
 
-$as_echo "#define HAVE_GETHOSTBYNAME_R_3_ARG 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETHOSTBYNAME_R_3_ARG 1" >>confdefs.h
 
-            { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-else
+else $as_nop
 
-           { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+           { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
   CFLAGS=$OLD_CFLAGS
 
-else
+else $as_nop
 
-  for ac_func in gethostbyname
-do :
   ac_fn_c_check_func "$LINENO" "gethostbyname" "ac_cv_func_gethostbyname"
-if test "x$ac_cv_func_gethostbyname" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_GETHOSTBYNAME 1
-_ACEOF
+if test "x$ac_cv_func_gethostbyname" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETHOSTBYNAME 1" >>confdefs.h
 
 fi
-done
 
 
 fi
@@ -20680,14 +22755,16 @@ fi
 
 # Linux requires this for correct f.p. operations
 ac_fn_c_check_func "$LINENO" "__fpu_control" "ac_cv_func___fpu_control"
-if test "x$ac_cv_func___fpu_control" = xyes; then :
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __fpu_control in -lieee" >&5
-$as_echo_n "checking for __fpu_control in -lieee... " >&6; }
-if ${ac_cv_lib_ieee___fpu_control+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+if test "x$ac_cv_func___fpu_control" = xyes
+then :
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __fpu_control in -lieee" >&5
+printf %s "checking for __fpu_control in -lieee... " >&6; }
+if test ${ac_cv_lib_ieee___fpu_control+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lieee  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -20696,33 +22773,30 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char __fpu_control ();
 int
-main ()
+main (void)
 {
 return __fpu_control ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ieee___fpu_control=yes
-else
+else $as_nop
   ac_cv_lib_ieee___fpu_control=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ieee___fpu_control" >&5
-$as_echo "$ac_cv_lib_ieee___fpu_control" >&6; }
-if test "x$ac_cv_lib_ieee___fpu_control" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBIEEE 1
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ieee___fpu_control" >&5
+printf "%s\n" "$ac_cv_lib_ieee___fpu_control" >&6; }
+if test "x$ac_cv_lib_ieee___fpu_control" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBIEEE 1" >>confdefs.h
 
   LIBS="-lieee $LIBS"
 
@@ -20738,49 +22812,51 @@ case $ac_sys_system in
 Darwin) ;;
 *) LIBM=-lm
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-libm=STRING" >&5
-$as_echo_n "checking for --with-libm=STRING... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-libm=STRING" >&5
+printf %s "checking for --with-libm=STRING... " >&6; }
 
 # Check whether --with-libm was given.
-if test "${with_libm+set}" = set; then :
+if test ${with_libm+y}
+then :
   withval=$with_libm;
 if test "$withval" = no
 then LIBM=
-     { $as_echo "$as_me:${as_lineno-$LINENO}: result: force LIBM empty" >&5
-$as_echo "force LIBM empty" >&6; }
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: force LIBM empty" >&5
+printf "%s\n" "force LIBM empty" >&6; }
 elif test "$withval" != yes
 then LIBM=$withval
-     { $as_echo "$as_me:${as_lineno-$LINENO}: result: set LIBM=\"$withval\"" >&5
-$as_echo "set LIBM=\"$withval\"" >&6; }
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: set LIBM=\"$withval\"" >&5
+printf "%s\n" "set LIBM=\"$withval\"" >&6; }
 else as_fn_error $? "proper usage is --with-libm=STRING" "$LINENO" 5
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: default LIBM=\"$LIBM\"" >&5
-$as_echo "default LIBM=\"$LIBM\"" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: default LIBM=\"$LIBM\"" >&5
+printf "%s\n" "default LIBM=\"$LIBM\"" >&6; }
 fi
 
 
 # check for --with-libc=...
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-libc=STRING" >&5
-$as_echo_n "checking for --with-libc=STRING... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-libc=STRING" >&5
+printf %s "checking for --with-libc=STRING... " >&6; }
 
 # Check whether --with-libc was given.
-if test "${with_libc+set}" = set; then :
+if test ${with_libc+y}
+then :
   withval=$with_libc;
 if test "$withval" = no
 then LIBC=
-     { $as_echo "$as_me:${as_lineno-$LINENO}: result: force LIBC empty" >&5
-$as_echo "force LIBC empty" >&6; }
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: force LIBC empty" >&5
+printf "%s\n" "force LIBC empty" >&6; }
 elif test "$withval" != yes
 then LIBC=$withval
-     { $as_echo "$as_me:${as_lineno-$LINENO}: result: set LIBC=\"$withval\"" >&5
-$as_echo "set LIBC=\"$withval\"" >&6; }
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: set LIBC=\"$withval\"" >&5
+printf "%s\n" "set LIBC=\"$withval\"" >&6; }
 else as_fn_error $? "proper usage is --with-libc=STRING" "$LINENO" 5
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: default LIBC=\"$LIBC\"" >&5
-$as_echo "default LIBC=\"$LIBC\"" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: default LIBC=\"$LIBC\"" >&5
+printf "%s\n" "default LIBC=\"$LIBC\"" >&6; }
 fi
 
 
@@ -20789,17 +22865,18 @@ fi
 # **************************************
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x64 gcc inline assembler" >&5
-$as_echo_n "checking for x64 gcc inline assembler... " >&6; }
-if ${ac_cv_gcc_asm_for_x64+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for x64 gcc inline assembler" >&5
+printf %s "checking for x64 gcc inline assembler... " >&6; }
+if test ${ac_cv_gcc_asm_for_x64+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   __asm__ __volatile__ ("movq %rcx, %rax");
@@ -20808,22 +22885,24 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_gcc_asm_for_x64=yes
-else
+else $as_nop
   ac_cv_gcc_asm_for_x64=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_gcc_asm_for_x64" >&5
-$as_echo "$ac_cv_gcc_asm_for_x64" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_gcc_asm_for_x64" >&5
+printf "%s\n" "$ac_cv_gcc_asm_for_x64" >&6; }
 
-if test "x$ac_cv_gcc_asm_for_x64" = xyes; then :
+if test "x$ac_cv_gcc_asm_for_x64" = xyes
+then :
 
 
-$as_echo "#define HAVE_GCC_ASM_FOR_X64 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GCC_ASM_FOR_X64 1" >>confdefs.h
 
 
 fi
@@ -20832,11 +22911,12 @@ fi
 # * Check for various properties of floating point *
 # **************************************************
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether float word ordering is bigendian" >&5
-$as_echo_n "checking whether float word ordering is bigendian... " >&6; }
-if ${ax_cv_c_float_words_bigendian+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether float word ordering is bigendian" >&5
+printf %s "checking whether float word ordering is bigendian... " >&6; }
+if test ${ax_cv_c_float_words_bigendian+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 
 ax_cv_c_float_words_bigendian=unknown
@@ -20848,7 +22928,8 @@ double d = 909042349670368103374704789055050114762116927356156320147971208440534
 
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
 
 if grep noonsees conftest.$ac_objext >/dev/null ; then
@@ -20864,15 +22945,15 @@ fi
 
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_c_float_words_bigendian" >&5
-$as_echo "$ax_cv_c_float_words_bigendian" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_c_float_words_bigendian" >&5
+printf "%s\n" "$ax_cv_c_float_words_bigendian" >&6; }
 
 case $ax_cv_c_float_words_bigendian in
   yes)
 
-$as_echo "#define FLOAT_WORDS_BIGENDIAN 1" >>confdefs.h
+printf "%s\n" "#define FLOAT_WORDS_BIGENDIAN 1" >>confdefs.h
  ;;
   no)
      ;;
@@ -20889,12 +22970,12 @@ esac
 if test "$ax_cv_c_float_words_bigendian" = "yes"
 then
 
-$as_echo "#define DOUBLE_IS_BIG_ENDIAN_IEEE754 1" >>confdefs.h
+printf "%s\n" "#define DOUBLE_IS_BIG_ENDIAN_IEEE754 1" >>confdefs.h
 
 elif test "$ax_cv_c_float_words_bigendian" = "no"
 then
 
-$as_echo "#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1" >>confdefs.h
+printf "%s\n" "#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1" >>confdefs.h
 
 else
   # Some ARM platforms use a mixed-endian representation for doubles.
@@ -20904,7 +22985,7 @@ else
   # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big
   # or little, then it must be this?
 
-$as_echo "#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1" >>confdefs.h
+printf "%s\n" "#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1" >>confdefs.h
 
 fi
 
@@ -20918,17 +22999,18 @@ fi
 # This inline assembler syntax may also work for suncc and icc,
 # so we try it on all platforms.
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we can use gcc inline assembler to get and set x87 control word" >&5
-$as_echo_n "checking whether we can use gcc inline assembler to get and set x87 control word... " >&6; }
-if ${ac_cv_gcc_asm_for_x87+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we can use gcc inline assembler to get and set x87 control word" >&5
+printf %s "checking whether we can use gcc inline assembler to get and set x87 control word... " >&6; }
+if test ${ac_cv_gcc_asm_for_x87+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   unsigned short cw;
@@ -20939,36 +23021,39 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_gcc_asm_for_x87=yes
-else
+else $as_nop
   ac_cv_gcc_asm_for_x87=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_gcc_asm_for_x87" >&5
-$as_echo "$ac_cv_gcc_asm_for_x87" >&6; }
-if test "x$ac_cv_gcc_asm_for_x87" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_gcc_asm_for_x87" >&5
+printf "%s\n" "$ac_cv_gcc_asm_for_x87" >&6; }
+if test "x$ac_cv_gcc_asm_for_x87" = xyes
+then :
 
 
-$as_echo "#define HAVE_GCC_ASM_FOR_X87 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GCC_ASM_FOR_X87 1" >>confdefs.h
 
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we can use gcc inline assembler to get and set mc68881 fpcr" >&5
-$as_echo_n "checking whether we can use gcc inline assembler to get and set mc68881 fpcr... " >&6; }
-if ${ac_cv_gcc_asm_for_mc68881+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we can use gcc inline assembler to get and set mc68881 fpcr" >&5
+printf %s "checking whether we can use gcc inline assembler to get and set mc68881 fpcr... " >&6; }
+if test ${ac_cv_gcc_asm_for_mc68881+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   unsigned int fpcr;
@@ -20979,21 +23064,23 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_gcc_asm_for_mc68881=yes
-else
+else $as_nop
   ac_cv_gcc_asm_for_mc68881=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_gcc_asm_for_mc68881" >&5
-$as_echo "$ac_cv_gcc_asm_for_mc68881" >&6; }
-if test "x$ac_cv_gcc_asm_for_mc68881" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_gcc_asm_for_mc68881" >&5
+printf "%s\n" "$ac_cv_gcc_asm_for_mc68881" >&6; }
+if test "x$ac_cv_gcc_asm_for_mc68881" = xyes
+then :
 
 
-$as_echo "#define HAVE_GCC_ASM_FOR_MC68881 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GCC_ASM_FOR_MC68881 1" >>confdefs.h
 
 
 fi
@@ -21003,18 +23090,20 @@ fi
 # IEEE 754 platforms.  On IEEE 754, test should return 1 if rounding
 # mode is round-to-nearest and double rounding issues are present, and
 # 0 otherwise.  See https://github.com/python/cpython/issues/47186 for more info.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x87-style double rounding" >&5
-$as_echo_n "checking for x87-style double rounding... " >&6; }
-if ${ac_cv_x87_double_rounding+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for x87-style double rounding" >&5
+printf %s "checking for x87-style double rounding... " >&6; }
+if test ${ac_cv_x87_double_rounding+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 # $BASECFLAGS may affect the result
 ac_save_cc="$CC"
 CC="$CC $BASECFLAGS"
-if test "$cross_compiling" = yes; then :
+if test "$cross_compiling" = yes
+then :
   ac_cv_x87_double_rounding=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -21038,9 +23127,10 @@ int main(void) {
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_x87_double_rounding=no
-else
+else $as_nop
   ac_cv_x87_double_rounding=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -21050,13 +23140,14 @@ fi
 CC="$ac_save_cc"
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_x87_double_rounding" >&5
-$as_echo "$ac_cv_x87_double_rounding" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_x87_double_rounding" >&5
+printf "%s\n" "$ac_cv_x87_double_rounding" >&6; }
 
-if test "x$ac_cv_x87_double_rounding" = xyes; then :
+if test "x$ac_cv_x87_double_rounding" = xyes
+then :
 
 
-$as_echo "#define X87_DOUBLE_ROUNDING 1" >>confdefs.h
+printf "%s\n" "#define X87_DOUBLE_ROUNDING 1" >>confdefs.h
 
 
 fi
@@ -21068,31 +23159,35 @@ fi
 LIBS_SAVE=$LIBS
 LIBS="$LIBS $LIBM"
 
-for ac_func in acosh asinh atanh erf erfc expm1 log1p log2
+
+  for ac_func in acosh asinh atanh erf erfc expm1 log1p log2
 do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+  as_ac_var=`printf "%s\n" "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+if eval test \"x\$"$as_ac_var"\" = x"yes"
+then :
   cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+#define `printf "%s\n" "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
+else $as_nop
   as_fn_error $? "Python requires C99 compatible libm" "$LINENO" 5
 
 fi
-done
 
+done
 LIBS=$LIBS_SAVE
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether POSIX semaphores are enabled" >&5
-$as_echo_n "checking whether POSIX semaphores are enabled... " >&6; }
-if ${ac_cv_posix_semaphores_enabled+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether POSIX semaphores are enabled" >&5
+printf %s "checking whether POSIX semaphores are enabled... " >&6; }
+if test ${ac_cv_posix_semaphores_enabled+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_posix_semaphores_enabled=yes
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -21116,9 +23211,10 @@ else
 
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_posix_semaphores_enabled=yes
-else
+else $as_nop
   ac_cv_posix_semaphores_enabled=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -21127,24 +23223,27 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_posix_semaphores_enabled" >&5
-$as_echo "$ac_cv_posix_semaphores_enabled" >&6; }
-if test "x$ac_cv_posix_semaphores_enabled" = xno; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_posix_semaphores_enabled" >&5
+printf "%s\n" "$ac_cv_posix_semaphores_enabled" >&6; }
+if test "x$ac_cv_posix_semaphores_enabled" = xno
+then :
 
 
-$as_echo "#define POSIX_SEMAPHORES_NOT_ENABLED 1" >>confdefs.h
+printf "%s\n" "#define POSIX_SEMAPHORES_NOT_ENABLED 1" >>confdefs.h
 
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken sem_getvalue" >&5
-$as_echo_n "checking for broken sem_getvalue... " >&6; }
-if ${ac_cv_broken_sem_getvalue+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for broken sem_getvalue" >&5
+printf %s "checking for broken sem_getvalue... " >&6; }
+if test ${ac_cv_broken_sem_getvalue+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_broken_sem_getvalue=yes
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -21172,9 +23271,10 @@ else
 
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_broken_sem_getvalue=no
-else
+else $as_nop
   ac_cv_broken_sem_getvalue=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -21183,111 +23283,97 @@ fi
 
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_sem_getvalue" >&5
-$as_echo "$ac_cv_broken_sem_getvalue" >&6; }
-if test "x$ac_cv_broken_sem_getvalue" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_sem_getvalue" >&5
+printf "%s\n" "$ac_cv_broken_sem_getvalue" >&6; }
+if test "x$ac_cv_broken_sem_getvalue" = xyes
+then :
 
 
-$as_echo "#define HAVE_BROKEN_SEM_GETVALUE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_SEM_GETVALUE 1" >>confdefs.h
 
 
 fi
 
-ac_fn_c_check_decl "$LINENO" "RTLD_LAZY" "ac_cv_have_decl_RTLD_LAZY" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_LAZY" = xyes; then :
+ac_fn_check_decl "$LINENO" "RTLD_LAZY" "ac_cv_have_decl_RTLD_LAZY" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_LAZY" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_LAZY $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_NOW" "ac_cv_have_decl_RTLD_NOW" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_NOW" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_LAZY $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_NOW" "ac_cv_have_decl_RTLD_NOW" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_NOW" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_NOW $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_GLOBAL" "ac_cv_have_decl_RTLD_GLOBAL" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_GLOBAL" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_NOW $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_GLOBAL" "ac_cv_have_decl_RTLD_GLOBAL" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_GLOBAL" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_GLOBAL $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_LOCAL" "ac_cv_have_decl_RTLD_LOCAL" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_LOCAL" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_GLOBAL $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_LOCAL" "ac_cv_have_decl_RTLD_LOCAL" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_LOCAL" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_LOCAL $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_NODELETE" "ac_cv_have_decl_RTLD_NODELETE" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_NODELETE" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_LOCAL $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_NODELETE" "ac_cv_have_decl_RTLD_NODELETE" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_NODELETE" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_NODELETE $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_NOLOAD" "ac_cv_have_decl_RTLD_NOLOAD" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_NOLOAD" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_NODELETE $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_NOLOAD" "ac_cv_have_decl_RTLD_NOLOAD" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_NOLOAD" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_NOLOAD $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_DEEPBIND" "ac_cv_have_decl_RTLD_DEEPBIND" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_DEEPBIND" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_NOLOAD $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_DEEPBIND" "ac_cv_have_decl_RTLD_DEEPBIND" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_DEEPBIND" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_DEEPBIND $ac_have_decl
-_ACEOF
-ac_fn_c_check_decl "$LINENO" "RTLD_MEMBER" "ac_cv_have_decl_RTLD_MEMBER" "#include <dlfcn.h>
-"
-if test "x$ac_cv_have_decl_RTLD_MEMBER" = xyes; then :
+printf "%s\n" "#define HAVE_DECL_RTLD_DEEPBIND $ac_have_decl" >>confdefs.h
+ac_fn_check_decl "$LINENO" "RTLD_MEMBER" "ac_cv_have_decl_RTLD_MEMBER" "#include <dlfcn.h>
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_RTLD_MEMBER" = xyes
+then :
   ac_have_decl=1
-else
+else $as_nop
   ac_have_decl=0
 fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_RTLD_MEMBER $ac_have_decl
-_ACEOF
+printf "%s\n" "#define HAVE_DECL_RTLD_MEMBER $ac_have_decl" >>confdefs.h
 
 
 # determine what size digit to use for Python's longs
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking digit size for Python's longs" >&5
-$as_echo_n "checking digit size for Python's longs... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking digit size for Python's longs" >&5
+printf %s "checking digit size for Python's longs... " >&6; }
 # Check whether --enable-big-digits was given.
-if test "${enable_big_digits+set}" = set; then :
+if test ${enable_big_digits+y}
+then :
   enableval=$enable_big_digits; case $enable_big_digits in
 yes)
   enable_big_digits=30 ;;
@@ -21298,36 +23384,34 @@ no)
 *)
   as_fn_error $? "bad value $enable_big_digits for --enable-big-digits; value should be 15 or 30" "$LINENO" 5 ;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_big_digits" >&5
-$as_echo "$enable_big_digits" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_big_digits" >&5
+printf "%s\n" "$enable_big_digits" >&6; }
 
-cat >>confdefs.h <<_ACEOF
-#define PYLONG_BITS_IN_DIGIT $enable_big_digits
-_ACEOF
+printf "%s\n" "#define PYLONG_BITS_IN_DIGIT $enable_big_digits" >>confdefs.h
 
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no value specified" >&5
-$as_echo "no value specified" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no value specified" >&5
+printf "%s\n" "no value specified" >&6; }
 fi
 
 
 # check for wchar.h
-ac_fn_c_check_header_mongrel "$LINENO" "wchar.h" "ac_cv_header_wchar_h" "$ac_includes_default"
-if test "x$ac_cv_header_wchar_h" = xyes; then :
+ac_fn_c_check_header_compile "$LINENO" "wchar.h" "ac_cv_header_wchar_h" "$ac_includes_default"
+if test "x$ac_cv_header_wchar_h" = xyes
+then :
 
 
-$as_echo "#define HAVE_WCHAR_H 1" >>confdefs.h
+printf "%s\n" "#define HAVE_WCHAR_H 1" >>confdefs.h
 
   wchar_h="yes"
 
-else
+else $as_nop
   wchar_h="no"
 
 fi
 
 
-
 # determine wchar_t size
 if test "$wchar_h" = yes
 then
@@ -21335,18 +23419,20 @@ then
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of wchar_t" >&5
-$as_echo_n "checking size of wchar_t... " >&6; }
-if ${ac_cv_sizeof_wchar_t+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of wchar_t" >&5
+printf %s "checking size of wchar_t... " >&6; }
+if test ${ac_cv_sizeof_wchar_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (wchar_t))" "ac_cv_sizeof_wchar_t"        "#include <wchar.h>
-"; then :
+"
+then :
 
-else
+else $as_nop
   if test "$ac_cv_type_wchar_t" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "cannot compute sizeof (wchar_t)
 See \`config.log' for more details" "$LINENO" 5; }
    else
@@ -21355,14 +23441,12 @@ See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_wchar_t" >&5
-$as_echo "$ac_cv_sizeof_wchar_t" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_wchar_t" >&5
+printf "%s\n" "$ac_cv_sizeof_wchar_t" >&6; }
 
 
 
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_WCHAR_T $ac_cv_sizeof_wchar_t
-_ACEOF
+printf "%s\n" "#define SIZEOF_WCHAR_T $ac_cv_sizeof_wchar_t" >>confdefs.h
 
 
 fi
@@ -21371,15 +23455,17 @@ fi
 if test "$wchar_h" = yes
 then
   # check whether wchar_t is signed or not
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether wchar_t is signed" >&5
-$as_echo_n "checking whether wchar_t is signed... " >&6; }
-if ${ac_cv_wchar_t_signed+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-  if test "$cross_compiling" = yes; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wchar_t is signed" >&5
+printf %s "checking whether wchar_t is signed... " >&6; }
+if test ${ac_cv_wchar_t_signed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+  if test "$cross_compiling" = yes
+then :
   ac_cv_wchar_t_signed=yes
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -21391,9 +23477,10 @@ else
   }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_wchar_t_signed=yes
-else
+else $as_nop
   ac_cv_wchar_t_signed=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -21401,24 +23488,24 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_wchar_t_signed" >&5
-$as_echo "$ac_cv_wchar_t_signed" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_wchar_t_signed" >&5
+printf "%s\n" "$ac_cv_wchar_t_signed" >&6; }
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether wchar_t is usable" >&5
-$as_echo_n "checking whether wchar_t is usable... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether wchar_t is usable" >&5
+printf %s "checking whether wchar_t is usable... " >&6; }
 # wchar_t is only usable if it maps to an unsigned type
 if test "$ac_cv_sizeof_wchar_t" -ge 2 \
           -a "$ac_cv_wchar_t_signed" = "no"
 then
 
-$as_echo "#define HAVE_USABLE_WCHAR_T 1" >>confdefs.h
+printf "%s\n" "#define HAVE_USABLE_WCHAR_T 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 case $ac_sys_system/$ac_sys_release in
@@ -21430,7 +23517,7 @@ SunOS/*)
       # non-Unicode locales is not Unicode and hence cannot be used directly.
       # https://docs.oracle.com/cd/E37838_01/html/E61053/gmwke.html
 
-$as_echo "#define HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION 1" >>confdefs.h
+printf "%s\n" "#define HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION 1" >>confdefs.h
 
     fi
   fi
@@ -21438,11 +23525,12 @@ $as_echo "#define HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION 1" >>confdefs.h
 esac
 
 # check for endianness
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
-$as_echo_n "checking whether byte ordering is bigendian... " >&6; }
-if ${ac_cv_c_bigendian+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
+printf %s "checking whether byte ordering is bigendian... " >&6; }
+if test ${ac_cv_c_bigendian+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_cv_c_bigendian=unknown
     # See if we're dealing with a universal compiler.
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -21453,7 +23541,8 @@ else
 	     typedef int dummy;
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
 
 	# Check for potential -arch flags.  It is not universal unless
 	# there are at least two -arch flags with different values.
@@ -21477,7 +23566,7 @@ if ac_fn_c_try_compile "$LINENO"; then :
 	 fi
        done
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     if test $ac_cv_c_bigendian = unknown; then
       # See if sys/param.h defines the BYTE_ORDER macro.
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -21486,7 +23575,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 	     #include <sys/param.h>
 
 int
-main ()
+main (void)
 {
 #if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
 		     && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
@@ -21498,7 +23587,8 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   # It does; now see whether it defined to BIG_ENDIAN or not.
 	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -21506,7 +23596,7 @@ if ac_fn_c_try_compile "$LINENO"; then :
 		#include <sys/param.h>
 
 int
-main ()
+main (void)
 {
 #if BYTE_ORDER != BIG_ENDIAN
 		 not big endian
@@ -21516,14 +23606,15 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_c_bigendian=yes
-else
+else $as_nop
   ac_cv_c_bigendian=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     fi
     if test $ac_cv_c_bigendian = unknown; then
       # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
@@ -21532,7 +23623,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 #include <limits.h>
 
 int
-main ()
+main (void)
 {
 #if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
 	      bogus endian macros
@@ -21542,14 +23633,15 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   # It does; now see whether it defined to _BIG_ENDIAN or not.
 	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <limits.h>
 
 int
-main ()
+main (void)
 {
 #ifndef _BIG_ENDIAN
 		 not big endian
@@ -21559,31 +23651,33 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_c_bigendian=yes
-else
+else $as_nop
   ac_cv_c_bigendian=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
     fi
     if test $ac_cv_c_bigendian = unknown; then
       # Compile a test program.
-      if test "$cross_compiling" = yes; then :
+      if test "$cross_compiling" = yes
+then :
   # Try to guess by grepping values from an object file.
 	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-short int ascii_mm[] =
+unsigned short int ascii_mm[] =
 		  { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
-		short int ascii_ii[] =
+		unsigned short int ascii_ii[] =
 		  { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
 		int use_ascii (int i) {
 		  return ascii_mm[i] + ascii_ii[i];
 		}
-		short int ebcdic_ii[] =
+		unsigned short int ebcdic_ii[] =
 		  { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
-		short int ebcdic_mm[] =
+		unsigned short int ebcdic_mm[] =
 		  { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
 		int use_ebcdic (int i) {
 		  return ebcdic_mm[i] + ebcdic_ii[i];
@@ -21591,14 +23685,15 @@ short int ascii_mm[] =
 		extern int foo;
 
 int
-main ()
+main (void)
 {
 return use_ascii (foo) == use_ebcdic (foo);
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
 	      ac_cv_c_bigendian=yes
 	    fi
@@ -21611,13 +23706,13 @@ if ac_fn_c_try_compile "$LINENO"; then :
 	      fi
 	    fi
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-else
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $ac_includes_default
 int
-main ()
+main (void)
 {
 
 	     /* Are we little or big endian?  From Harbison&Steele.  */
@@ -21633,9 +23728,10 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_c_bigendian=no
-else
+else $as_nop
   ac_cv_c_bigendian=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -21644,17 +23740,17 @@ fi
 
     fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
-$as_echo "$ac_cv_c_bigendian" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
+printf "%s\n" "$ac_cv_c_bigendian" >&6; }
  case $ac_cv_c_bigendian in #(
    yes)
-     $as_echo "#define WORDS_BIGENDIAN 1" >>confdefs.h
+     printf "%s\n" "#define WORDS_BIGENDIAN 1" >>confdefs.h
 ;; #(
    no)
       ;; #(
    universal)
 
-$as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
+printf "%s\n" "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
 
      ;; #(
    *)
@@ -21670,6 +23766,7 @@ $as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
 #
 # * The Python implementation (always 'cpython-' for us)
 # * The major and minor version numbers
+# * --disable-gil (adds a 't')
 # * --with-pydebug (adds a 'd')
 #
 # Thus for example, Python 3.2 built with wide unicode, pydebug, and pymalloc,
@@ -21679,36 +23776,35 @@ $as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
 # In Python 3.2 and older, --with-wide-unicode added a 'u' flag.
 # In Python 3.7 and older, --with-pymalloc added a 'm' flag.
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking ABIFLAGS" >&5
-$as_echo_n "checking ABIFLAGS... " >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ABIFLAGS" >&5
-$as_echo "$ABIFLAGS" >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking SOABI" >&5
-$as_echo_n "checking SOABI... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking ABIFLAGS" >&5
+printf %s "checking ABIFLAGS... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ABIFLAGS" >&5
+printf "%s\n" "$ABIFLAGS" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking SOABI" >&5
+printf %s "checking SOABI... " >&6; }
 SOABI='cpython-'`echo $VERSION | tr -d .`${ABIFLAGS}${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET}
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $SOABI" >&5
-$as_echo "$SOABI" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $SOABI" >&5
+printf "%s\n" "$SOABI" >&6; }
 
-# Release and debug (Py_DEBUG) ABI are compatible, but not Py_TRACE_REFS ABI
-if test "$Py_DEBUG" = 'true' -a "$with_trace_refs" != "yes"; then
+# Release build, debug build (Py_DEBUG), and trace refs build (Py_TRACE_REFS)
+# are ABI compatible
+if test "$Py_DEBUG" = 'true'; then
   # Similar to SOABI but remove "d" flag from ABIFLAGS
 
   ALT_SOABI='cpython-'`echo $VERSION | tr -d .``echo $ABIFLAGS | tr -d d`${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET}
 
-cat >>confdefs.h <<_ACEOF
-#define ALT_SOABI "${ALT_SOABI}"
-_ACEOF
+printf "%s\n" "#define ALT_SOABI \"${ALT_SOABI}\"" >>confdefs.h
 
 fi
 
 
 EXT_SUFFIX=.${SOABI}${SHLIB_SUFFIX}
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LDVERSION" >&5
-$as_echo_n "checking LDVERSION... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LDVERSION" >&5
+printf %s "checking LDVERSION... " >&6; }
 LDVERSION='$(VERSION)$(ABIFLAGS)'
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LDVERSION" >&5
-$as_echo "$LDVERSION" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LDVERSION" >&5
+printf "%s\n" "$LDVERSION" >&6; }
 
 # On Android and Cygwin the shared libraries must be linked with libpython.
 
@@ -21727,11 +23823,12 @@ BINLIBDEST='$(LIBDIR)/python$(VERSION)'
 # /usr/$LIDIRNAME/python$VERSION
 
 PLATLIBDIR="lib"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-platlibdir" >&5
-$as_echo_n "checking for --with-platlibdir... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-platlibdir" >&5
+printf %s "checking for --with-platlibdir... " >&6; }
 
 # Check whether --with-platlibdir was given.
-if test "${with_platlibdir+set}" = set; then :
+if test ${with_platlibdir+y}
+then :
   withval=$with_platlibdir;
 # ignore 3 options:
 #   --with-platlibdir
@@ -21739,17 +23836,17 @@ if test "${with_platlibdir+set}" = set; then :
 #   --without-platlibdir
 if test -n "$withval" -a "$withval" != yes -a "$withval" != no
 then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
   PLATLIBDIR="$withval"
   BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)'
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -21765,37 +23862,40 @@ fi
 # Check for --with-wheel-pkg-dir=PATH
 
 WHEEL_PKG_DIR=""
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-wheel-pkg-dir" >&5
-$as_echo_n "checking for --with-wheel-pkg-dir... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-wheel-pkg-dir" >&5
+printf %s "checking for --with-wheel-pkg-dir... " >&6; }
 
 # Check whether --with-wheel-pkg-dir was given.
-if test "${with_wheel_pkg_dir+set}" = set; then :
+if test ${with_wheel_pkg_dir+y}
+then :
   withval=$with_wheel_pkg_dir;
 if test -n "$withval"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
   WHEEL_PKG_DIR="$withval"
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
 # Check whether right shifting a negative integer extends the sign bit
 # or fills with zeros (like the Cray J90, according to Tim Peters).
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether right shift extends the sign bit" >&5
-$as_echo_n "checking whether right shift extends the sign bit... " >&6; }
-if ${ac_cv_rshift_extends_sign+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether right shift extends the sign bit" >&5
+printf %s "checking whether right shift extends the sign bit... " >&6; }
+if test ${ac_cv_rshift_extends_sign+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+if test "$cross_compiling" = yes
+then :
   ac_cv_rshift_extends_sign=yes
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -21805,9 +23905,10 @@ int main(void)
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_rshift_extends_sign=yes
-else
+else $as_nop
   ac_cv_rshift_extends_sign=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -21815,27 +23916,28 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_rshift_extends_sign" >&5
-$as_echo "$ac_cv_rshift_extends_sign" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_rshift_extends_sign" >&5
+printf "%s\n" "$ac_cv_rshift_extends_sign" >&6; }
 if test "$ac_cv_rshift_extends_sign" = no
 then
 
-$as_echo "#define SIGNED_RIGHT_SHIFT_ZERO_FILLS 1" >>confdefs.h
+printf "%s\n" "#define SIGNED_RIGHT_SHIFT_ZERO_FILLS 1" >>confdefs.h
 
 fi
 
 # check for getc_unlocked and related locking functions
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for getc_unlocked() and friends" >&5
-$as_echo_n "checking for getc_unlocked() and friends... " >&6; }
-if ${ac_cv_have_getc_unlocked+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getc_unlocked() and friends" >&5
+printf %s "checking for getc_unlocked() and friends... " >&6; }
+if test ${ac_cv_have_getc_unlocked+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdio.h>
 int
-main ()
+main (void)
 {
 
 	FILE *f = fopen("/dev/null", "r");
@@ -21847,20 +23949,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_have_getc_unlocked=yes
-else
+else $as_nop
   ac_cv_have_getc_unlocked=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_getc_unlocked" >&5
-$as_echo "$ac_cv_have_getc_unlocked" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have_getc_unlocked" >&5
+printf "%s\n" "$ac_cv_have_getc_unlocked" >&6; }
 if test "$ac_cv_have_getc_unlocked" = yes
 then
 
-$as_echo "#define HAVE_GETC_UNLOCKED 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETC_UNLOCKED 1" >>confdefs.h
 
 fi
 
@@ -21869,7 +23972,8 @@ fi
 
 
 # Check whether --with-readline was given.
-if test "${with_readline+set}" = set; then :
+if test ${with_readline+y}
+then :
   withval=$with_readline;
     case $with_readline in #(
   editline|edit) :
@@ -21883,27 +23987,28 @@ if test "${with_readline+set}" = set; then :
      ;;
 esac
 
-else
+else $as_nop
   with_readline=readline
 
 fi
 
 
-if test "x$with_readline" = xreadline; then :
+if test "x$with_readline" = xreadline
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBREADLINE" >&5
-$as_echo_n "checking for LIBREADLINE... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for readline" >&5
+printf %s "checking for readline... " >&6; }
 
 if test -n "$LIBREADLINE_CFLAGS"; then
     pkg_cv_LIBREADLINE_CFLAGS="$LIBREADLINE_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"readline\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"readline\""; } >&5
   ($PKG_CONFIG --exists --print-errors "readline") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBREADLINE_CFLAGS=`$PKG_CONFIG --cflags "readline" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -21917,10 +24022,10 @@ if test -n "$LIBREADLINE_LIBS"; then
     pkg_cv_LIBREADLINE_LIBS="$LIBREADLINE_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"readline\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"readline\""; } >&5
   ($PKG_CONFIG --exists --print-errors "readline") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBREADLINE_LIBS=`$PKG_CONFIG --libs "readline" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -21934,8 +24039,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -21959,19 +24064,19 @@ save_LIBS=$LIBS
 
       CPPFLAGS="$CPPFLAGS $LIBREADLINE_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBREADLINE_LIBS"
-      for ac_header in readline/readline.h
+             for ac_header in readline/readline.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "readline/readline.h" "ac_cv_header_readline_readline_h" "$ac_includes_default"
-if test "x$ac_cv_header_readline_readline_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_READLINE_READLINE_H 1
-_ACEOF
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for readline in -lreadline" >&5
-$as_echo_n "checking for readline in -lreadline... " >&6; }
-if ${ac_cv_lib_readline_readline+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "readline/readline.h" "ac_cv_header_readline_readline_h" "$ac_includes_default"
+if test "x$ac_cv_header_readline_readline_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_READLINE_READLINE_H 1" >>confdefs.h
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for readline in -lreadline" >&5
+printf %s "checking for readline in -lreadline... " >&6; }
+if test ${ac_cv_lib_readline_readline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lreadline  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -21980,47 +24085,45 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char readline ();
 int
-main ()
+main (void)
 {
 return readline ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_readline_readline=yes
-else
+else $as_nop
   ac_cv_lib_readline_readline=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_readline" >&5
-$as_echo "$ac_cv_lib_readline_readline" >&6; }
-if test "x$ac_cv_lib_readline_readline" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_readline" >&5
+printf "%s\n" "$ac_cv_lib_readline_readline" >&6; }
+if test "x$ac_cv_lib_readline_readline" = xyes
+then :
 
           LIBREADLINE=readline
           READLINE_CFLAGS=${LIBREADLINE_CFLAGS-""}
           READLINE_LIBS=${LIBREADLINE_LIBS-"-lreadline"}
 
-else
+else $as_nop
   with_readline=no
 fi
 
 
-else
+else $as_nop
   with_readline=no
 fi
 
 done
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -22029,8 +24132,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
     save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -22040,19 +24143,19 @@ save_LIBS=$LIBS
 
       CPPFLAGS="$CPPFLAGS $LIBREADLINE_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBREADLINE_LIBS"
-      for ac_header in readline/readline.h
+             for ac_header in readline/readline.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "readline/readline.h" "ac_cv_header_readline_readline_h" "$ac_includes_default"
-if test "x$ac_cv_header_readline_readline_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_READLINE_READLINE_H 1
-_ACEOF
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for readline in -lreadline" >&5
-$as_echo_n "checking for readline in -lreadline... " >&6; }
-if ${ac_cv_lib_readline_readline+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "readline/readline.h" "ac_cv_header_readline_readline_h" "$ac_includes_default"
+if test "x$ac_cv_header_readline_readline_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_READLINE_READLINE_H 1" >>confdefs.h
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for readline in -lreadline" >&5
+printf %s "checking for readline in -lreadline... " >&6; }
+if test ${ac_cv_lib_readline_readline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lreadline  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -22061,47 +24164,45 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char readline ();
 int
-main ()
+main (void)
 {
 return readline ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_readline_readline=yes
-else
+else $as_nop
   ac_cv_lib_readline_readline=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_readline" >&5
-$as_echo "$ac_cv_lib_readline_readline" >&6; }
-if test "x$ac_cv_lib_readline_readline" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_readline" >&5
+printf "%s\n" "$ac_cv_lib_readline_readline" >&6; }
+if test "x$ac_cv_lib_readline_readline" = xyes
+then :
 
           LIBREADLINE=readline
           READLINE_CFLAGS=${LIBREADLINE_CFLAGS-""}
           READLINE_LIBS=${LIBREADLINE_LIBS-"-lreadline"}
 
-else
+else $as_nop
   with_readline=no
 fi
 
 
-else
+else $as_nop
   with_readline=no
 fi
 
 done
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -22112,8 +24213,8 @@ LIBS=$save_LIBS
 else
 	LIBREADLINE_CFLAGS=$pkg_cv_LIBREADLINE_CFLAGS
 	LIBREADLINE_LIBS=$pkg_cv_LIBREADLINE_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
     LIBREADLINE=readline
     READLINE_CFLAGS=$LIBREADLINE_CFLAGS
@@ -22123,21 +24224,22 @@ fi
 
 fi
 
-if test "x$with_readline" = xedit; then :
+if test "x$with_readline" = xedit
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBEDIT" >&5
-$as_echo_n "checking for LIBEDIT... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libedit" >&5
+printf %s "checking for libedit... " >&6; }
 
 if test -n "$LIBEDIT_CFLAGS"; then
     pkg_cv_LIBEDIT_CFLAGS="$LIBEDIT_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libedit\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libedit\""; } >&5
   ($PKG_CONFIG --exists --print-errors "libedit") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBEDIT_CFLAGS=`$PKG_CONFIG --cflags "libedit" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -22151,10 +24253,10 @@ if test -n "$LIBEDIT_LIBS"; then
     pkg_cv_LIBEDIT_LIBS="$LIBEDIT_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libedit\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libedit\""; } >&5
   ($PKG_CONFIG --exists --print-errors "libedit") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBEDIT_LIBS=`$PKG_CONFIG --libs "libedit" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -22168,8 +24270,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -22193,19 +24295,19 @@ save_LIBS=$LIBS
 
       CPPFLAGS="$CPPFLAGS $LIBEDIT_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBEDIT_LIBS"
-      for ac_header in editline/readline.h
+             for ac_header in editline/readline.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "editline/readline.h" "ac_cv_header_editline_readline_h" "$ac_includes_default"
-if test "x$ac_cv_header_editline_readline_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_EDITLINE_READLINE_H 1
-_ACEOF
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for readline in -ledit" >&5
-$as_echo_n "checking for readline in -ledit... " >&6; }
-if ${ac_cv_lib_edit_readline+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "editline/readline.h" "ac_cv_header_editline_readline_h" "$ac_includes_default"
+if test "x$ac_cv_header_editline_readline_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_EDITLINE_READLINE_H 1" >>confdefs.h
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for readline in -ledit" >&5
+printf %s "checking for readline in -ledit... " >&6; }
+if test ${ac_cv_lib_edit_readline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-ledit  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -22214,49 +24316,47 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char readline ();
 int
-main ()
+main (void)
 {
 return readline ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_edit_readline=yes
-else
+else $as_nop
   ac_cv_lib_edit_readline=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_edit_readline" >&5
-$as_echo "$ac_cv_lib_edit_readline" >&6; }
-if test "x$ac_cv_lib_edit_readline" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_edit_readline" >&5
+printf "%s\n" "$ac_cv_lib_edit_readline" >&6; }
+if test "x$ac_cv_lib_edit_readline" = xyes
+then :
 
           LIBREADLINE=edit
-          $as_echo "#define WITH_EDITLINE 1" >>confdefs.h
+          printf "%s\n" "#define WITH_EDITLINE 1" >>confdefs.h
 
           READLINE_CFLAGS=${LIBEDIT_CFLAGS-""}
           READLINE_LIBS=${LIBEDIT_LIBS-"-ledit"}
 
-else
+else $as_nop
   with_readline=no
 fi
 
 
-else
+else $as_nop
   with_readline=no
 fi
 
 done
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -22265,8 +24365,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
     save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -22276,19 +24376,19 @@ save_LIBS=$LIBS
 
       CPPFLAGS="$CPPFLAGS $LIBEDIT_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBEDIT_LIBS"
-      for ac_header in editline/readline.h
+             for ac_header in editline/readline.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "editline/readline.h" "ac_cv_header_editline_readline_h" "$ac_includes_default"
-if test "x$ac_cv_header_editline_readline_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_EDITLINE_READLINE_H 1
-_ACEOF
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for readline in -ledit" >&5
-$as_echo_n "checking for readline in -ledit... " >&6; }
-if ${ac_cv_lib_edit_readline+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  ac_fn_c_check_header_compile "$LINENO" "editline/readline.h" "ac_cv_header_editline_readline_h" "$ac_includes_default"
+if test "x$ac_cv_header_editline_readline_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_EDITLINE_READLINE_H 1" >>confdefs.h
+
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for readline in -ledit" >&5
+printf %s "checking for readline in -ledit... " >&6; }
+if test ${ac_cv_lib_edit_readline+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-ledit  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -22297,49 +24397,47 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char readline ();
 int
-main ()
+main (void)
 {
 return readline ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_edit_readline=yes
-else
+else $as_nop
   ac_cv_lib_edit_readline=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_edit_readline" >&5
-$as_echo "$ac_cv_lib_edit_readline" >&6; }
-if test "x$ac_cv_lib_edit_readline" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_edit_readline" >&5
+printf "%s\n" "$ac_cv_lib_edit_readline" >&6; }
+if test "x$ac_cv_lib_edit_readline" = xyes
+then :
 
           LIBREADLINE=edit
-          $as_echo "#define WITH_EDITLINE 1" >>confdefs.h
+          printf "%s\n" "#define WITH_EDITLINE 1" >>confdefs.h
 
           READLINE_CFLAGS=${LIBEDIT_CFLAGS-""}
           READLINE_LIBS=${LIBEDIT_LIBS-"-ledit"}
 
-else
+else $as_nop
   with_readline=no
 fi
 
 
-else
+else $as_nop
   with_readline=no
 fi
 
 done
 
-
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -22350,10 +24448,10 @@ LIBS=$save_LIBS
 else
 	LIBEDIT_CFLAGS=$pkg_cv_LIBEDIT_CFLAGS
 	LIBEDIT_LIBS=$pkg_cv_LIBEDIT_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-    $as_echo "#define WITH_EDITLINE 1" >>confdefs.h
+    printf "%s\n" "#define WITH_EDITLINE 1" >>confdefs.h
 
     LIBREADLINE=edit
     READLINE_CFLAGS=$LIBEDIT_CFLAGS
@@ -22365,17 +24463,18 @@ fi
 
 READLINE_CFLAGS=$(echo $READLINE_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to link readline" >&5
-$as_echo_n "checking how to link readline... " >&6; }
-if test "x$with_readline" = xno; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to link readline" >&5
+printf %s "checking how to link readline... " >&6; }
+if test "x$with_readline" = xno
+then :
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
-else
+else $as_nop
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_readline (CFLAGS: $READLINE_CFLAGS, LIBS: $READLINE_LIBS)" >&5
-$as_echo "$with_readline (CFLAGS: $READLINE_CFLAGS, LIBS: $READLINE_LIBS)" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_readline (CFLAGS: $READLINE_CFLAGS, LIBS: $READLINE_LIBS)" >&5
+printf "%s\n" "$with_readline (CFLAGS: $READLINE_CFLAGS, LIBS: $READLINE_LIBS)" >&6; }
 
   save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -22390,7 +24489,7 @@ save_LIBS=$LIBS
 
 
     # check for readline 2.2
-    ac_fn_c_check_decl "$LINENO" "rl_completion_append_character" "ac_cv_have_decl_rl_completion_append_character" "
+    ac_fn_check_decl "$LINENO" "rl_completion_append_character" "ac_cv_have_decl_rl_completion_append_character" "
       #include <stdio.h> /* Must be first for Gnu Readline */
       #ifdef WITH_EDITLINE
       # include <editline/readline.h>
@@ -22399,17 +24498,17 @@ save_LIBS=$LIBS
       # include <readline/history.h>
       #endif
 
-"
-if test "x$ac_cv_have_decl_rl_completion_append_character" = xyes; then :
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_rl_completion_append_character" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_COMPLETION_APPEND_CHARACTER 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_COMPLETION_APPEND_CHARACTER 1" >>confdefs.h
 
 
 fi
 
-
-    ac_fn_c_check_decl "$LINENO" "rl_completion_suppress_append" "ac_cv_have_decl_rl_completion_suppress_append" "
+    ac_fn_check_decl "$LINENO" "rl_completion_suppress_append" "ac_cv_have_decl_rl_completion_suppress_append" "
       #include <stdio.h> /* Must be first for Gnu Readline */
       #ifdef WITH_EDITLINE
       # include <editline/readline.h>
@@ -22418,22 +24517,23 @@ fi
       # include <readline/history.h>
       #endif
 
-"
-if test "x$ac_cv_have_decl_rl_completion_suppress_append" = xyes; then :
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_rl_completion_suppress_append" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_COMPLETION_SUPPRESS_APPEND 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_COMPLETION_SUPPRESS_APPEND 1" >>confdefs.h
 
 
 fi
 
-
     # check for readline 4.0
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_pre_input_hook in -l$LIBREADLINE" >&5
-$as_echo_n "checking for rl_pre_input_hook in -l$LIBREADLINE... " >&6; }
-if ${ac_cv_readline_rl_pre_input_hook+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for rl_pre_input_hook in -l$LIBREADLINE" >&5
+printf %s "checking for rl_pre_input_hook in -l$LIBREADLINE... " >&6; }
+if test ${ac_cv_readline_rl_pre_input_hook+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -22447,39 +24547,42 @@ else
       #endif
 
 int
-main ()
+main (void)
 {
 void *x = rl_pre_input_hook
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_readline_rl_pre_input_hook=yes
-else
+else $as_nop
   ac_cv_readline_rl_pre_input_hook=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_pre_input_hook" >&5
-$as_echo "$ac_cv_readline_rl_pre_input_hook" >&6; }
-    if test "x$ac_cv_readline_rl_pre_input_hook" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_pre_input_hook" >&5
+printf "%s\n" "$ac_cv_readline_rl_pre_input_hook" >&6; }
+    if test "x$ac_cv_readline_rl_pre_input_hook" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_PRE_INPUT_HOOK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_PRE_INPUT_HOOK 1" >>confdefs.h
 
 
 fi
 
     # also in 4.0
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_completion_display_matches_hook in -l$LIBREADLINE" >&5
-$as_echo_n "checking for rl_completion_display_matches_hook in -l$LIBREADLINE... " >&6; }
-if ${ac_cv_readline_rl_completion_display_matches_hook+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for rl_completion_display_matches_hook in -l$LIBREADLINE" >&5
+printf %s "checking for rl_completion_display_matches_hook in -l$LIBREADLINE... " >&6; }
+if test ${ac_cv_readline_rl_completion_display_matches_hook+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -22493,39 +24596,42 @@ else
       #endif
 
 int
-main ()
+main (void)
 {
 void *x = rl_completion_display_matches_hook
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_readline_rl_completion_display_matches_hook=yes
-else
+else $as_nop
   ac_cv_readline_rl_completion_display_matches_hook=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_completion_display_matches_hook" >&5
-$as_echo "$ac_cv_readline_rl_completion_display_matches_hook" >&6; }
-    if test "x$ac_cv_readline_rl_completion_display_matches_hook" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_completion_display_matches_hook" >&5
+printf "%s\n" "$ac_cv_readline_rl_completion_display_matches_hook" >&6; }
+    if test "x$ac_cv_readline_rl_completion_display_matches_hook" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK 1" >>confdefs.h
 
 
 fi
 
     # also in 4.0, but not in editline
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_resize_terminal in -l$LIBREADLINE" >&5
-$as_echo_n "checking for rl_resize_terminal in -l$LIBREADLINE... " >&6; }
-if ${ac_cv_readline_rl_resize_terminal+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for rl_resize_terminal in -l$LIBREADLINE" >&5
+printf %s "checking for rl_resize_terminal in -l$LIBREADLINE... " >&6; }
+if test ${ac_cv_readline_rl_resize_terminal+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -22539,39 +24645,42 @@ else
       #endif
 
 int
-main ()
+main (void)
 {
 void *x = rl_resize_terminal
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_readline_rl_resize_terminal=yes
-else
+else $as_nop
   ac_cv_readline_rl_resize_terminal=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_resize_terminal" >&5
-$as_echo "$ac_cv_readline_rl_resize_terminal" >&6; }
-    if test "x$ac_cv_readline_rl_resize_terminal" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_resize_terminal" >&5
+printf "%s\n" "$ac_cv_readline_rl_resize_terminal" >&6; }
+    if test "x$ac_cv_readline_rl_resize_terminal" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_RESIZE_TERMINAL 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_RESIZE_TERMINAL 1" >>confdefs.h
 
 
 fi
 
     # check for readline 4.2
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_completion_matches in -l$LIBREADLINE" >&5
-$as_echo_n "checking for rl_completion_matches in -l$LIBREADLINE... " >&6; }
-if ${ac_cv_readline_rl_completion_matches+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for rl_completion_matches in -l$LIBREADLINE" >&5
+printf %s "checking for rl_completion_matches in -l$LIBREADLINE... " >&6; }
+if test ${ac_cv_readline_rl_completion_matches+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -22585,35 +24694,37 @@ else
       #endif
 
 int
-main ()
+main (void)
 {
 void *x = rl_completion_matches
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_readline_rl_completion_matches=yes
-else
+else $as_nop
   ac_cv_readline_rl_completion_matches=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_completion_matches" >&5
-$as_echo "$ac_cv_readline_rl_completion_matches" >&6; }
-    if test "x$ac_cv_readline_rl_completion_matches" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_rl_completion_matches" >&5
+printf "%s\n" "$ac_cv_readline_rl_completion_matches" >&6; }
+    if test "x$ac_cv_readline_rl_completion_matches" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_COMPLETION_MATCHES 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_COMPLETION_MATCHES 1" >>confdefs.h
 
 
 fi
 
     # also in readline 4.2
-    ac_fn_c_check_decl "$LINENO" "rl_catch_signals" "ac_cv_have_decl_rl_catch_signals" "
+    ac_fn_check_decl "$LINENO" "rl_catch_signals" "ac_cv_have_decl_rl_catch_signals" "
       #include <stdio.h> /* Must be first for Gnu Readline */
       #ifdef WITH_EDITLINE
       # include <editline/readline.h>
@@ -22622,21 +24733,22 @@ fi
       # include <readline/history.h>
       #endif
 
-"
-if test "x$ac_cv_have_decl_rl_catch_signals" = xyes; then :
+" "$ac_c_undeclared_builtin_options" "CFLAGS"
+if test "x$ac_cv_have_decl_rl_catch_signals" = xyes
+then :
 
 
-$as_echo "#define HAVE_RL_CATCH_SIGNAL 1" >>confdefs.h
+printf "%s\n" "#define HAVE_RL_CATCH_SIGNAL 1" >>confdefs.h
 
 
 fi
 
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for append_history in -l$LIBREADLINE" >&5
-$as_echo_n "checking for append_history in -l$LIBREADLINE... " >&6; }
-if ${ac_cv_readline_append_history+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for append_history in -l$LIBREADLINE" >&5
+printf %s "checking for append_history in -l$LIBREADLINE... " >&6; }
+if test ${ac_cv_readline_append_history+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -22650,35 +24762,56 @@ else
       #endif
 
 int
-main ()
+main (void)
 {
 void *x = append_history
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_readline_append_history=yes
-else
+else $as_nop
   ac_cv_readline_append_history=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_append_history" >&5
-$as_echo "$ac_cv_readline_append_history" >&6; }
-    if test "x$ac_cv_readline_append_history" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_readline_append_history" >&5
+printf "%s\n" "$ac_cv_readline_append_history" >&6; }
+    if test "x$ac_cv_readline_append_history" = xyes
+then :
+
+
+printf "%s\n" "#define HAVE_RL_APPEND_HISTORY 1" >>confdefs.h
+
+
+fi
 
+    # in readline as well as newer editline (April 2023)
+    ac_fn_c_check_type "$LINENO" "rl_compdisp_func_t" "ac_cv_type_rl_compdisp_func_t" "
+      #include <stdio.h> /* Must be first for Gnu Readline */
+      #ifdef WITH_EDITLINE
+      # include <editline/readline.h>
+      #else
+      # include <readline/readline.h>
+      # include <readline/history.h>
+      #endif
 
-$as_echo "#define HAVE_RL_APPEND_HISTORY 1" >>confdefs.h
+"
+if test "x$ac_cv_type_rl_compdisp_func_t" = xyes
+then :
 
+printf "%s\n" "#define HAVE_RL_COMPDISP_FUNC_T 1" >>confdefs.h
 
 fi
 
 
 
+
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
 LDFLAGS=$save_LDFLAGS
@@ -22687,15 +24820,17 @@ LIBS=$save_LIBS
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken nice()" >&5
-$as_echo_n "checking for broken nice()... " >&6; }
-if ${ac_cv_broken_nice+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for broken nice()" >&5
+printf %s "checking for broken nice()... " >&6; }
+if test ${ac_cv_broken_nice+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
-if test "$cross_compiling" = yes; then :
+if test "$cross_compiling" = yes
+then :
   ac_cv_broken_nice=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -22710,9 +24845,10 @@ int main(void)
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_broken_nice=yes
-else
+else $as_nop
   ac_cv_broken_nice=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -22720,23 +24856,25 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_nice" >&5
-$as_echo "$ac_cv_broken_nice" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_nice" >&5
+printf "%s\n" "$ac_cv_broken_nice" >&6; }
 if test "$ac_cv_broken_nice" = yes
 then
 
-$as_echo "#define HAVE_BROKEN_NICE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_NICE 1" >>confdefs.h
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken poll()" >&5
-$as_echo_n "checking for broken poll()... " >&6; }
-if ${ac_cv_broken_poll+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for broken poll()" >&5
+printf %s "checking for broken poll()... " >&6; }
+if test ${ac_cv_broken_poll+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_broken_poll=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -22760,9 +24898,10 @@ int main(void)
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_broken_poll=yes
-else
+else $as_nop
   ac_cv_broken_poll=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -22770,25 +24909,27 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_poll" >&5
-$as_echo "$ac_cv_broken_poll" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_poll" >&5
+printf "%s\n" "$ac_cv_broken_poll" >&6; }
 if test "$ac_cv_broken_poll" = yes
 then
 
-$as_echo "#define HAVE_BROKEN_POLL 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_POLL 1" >>confdefs.h
 
 fi
 
 # check tzset(3) exists and works like we expect it to
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working tzset()" >&5
-$as_echo_n "checking for working tzset()... " >&6; }
-if ${ac_cv_working_tzset+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for working tzset()" >&5
+printf %s "checking for working tzset()... " >&6; }
+if test ${ac_cv_working_tzset+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+if test "$cross_compiling" = yes
+then :
   ac_cv_working_tzset=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -22856,9 +24997,10 @@ int main(void)
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_working_tzset=yes
-else
+else $as_nop
   ac_cv_working_tzset=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -22866,26 +25008,27 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_tzset" >&5
-$as_echo "$ac_cv_working_tzset" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_tzset" >&5
+printf "%s\n" "$ac_cv_working_tzset" >&6; }
 if test "$ac_cv_working_tzset" = yes
 then
 
-$as_echo "#define HAVE_WORKING_TZSET 1" >>confdefs.h
+printf "%s\n" "#define HAVE_WORKING_TZSET 1" >>confdefs.h
 
 fi
 
 # Look for subsecond timestamps in struct stat
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for tv_nsec in struct stat" >&5
-$as_echo_n "checking for tv_nsec in struct stat... " >&6; }
-if ${ac_cv_stat_tv_nsec+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for tv_nsec in struct stat" >&5
+printf %s "checking for tv_nsec in struct stat... " >&6; }
+if test ${ac_cv_stat_tv_nsec+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/stat.h>
 int
-main ()
+main (void)
 {
 
 struct stat st;
@@ -22895,33 +25038,35 @@ st.st_mtim.tv_nsec = 1;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_stat_tv_nsec=yes
-else
+else $as_nop
   ac_cv_stat_tv_nsec=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_stat_tv_nsec" >&5
-$as_echo "$ac_cv_stat_tv_nsec" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_stat_tv_nsec" >&5
+printf "%s\n" "$ac_cv_stat_tv_nsec" >&6; }
 if test "$ac_cv_stat_tv_nsec" = yes
 then
 
-$as_echo "#define HAVE_STAT_TV_NSEC 1" >>confdefs.h
+printf "%s\n" "#define HAVE_STAT_TV_NSEC 1" >>confdefs.h
 
 fi
 
 # Look for BSD style subsecond timestamps in struct stat
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for tv_nsec2 in struct stat" >&5
-$as_echo_n "checking for tv_nsec2 in struct stat... " >&6; }
-if ${ac_cv_stat_tv_nsec2+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for tv_nsec2 in struct stat" >&5
+printf %s "checking for tv_nsec2 in struct stat... " >&6; }
+if test ${ac_cv_stat_tv_nsec2+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/stat.h>
 int
-main ()
+main (void)
 {
 
 struct stat st;
@@ -22931,19 +25076,20 @@ st.st_mtimespec.tv_nsec = 1;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_stat_tv_nsec2=yes
-else
+else $as_nop
   ac_cv_stat_tv_nsec2=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_stat_tv_nsec2" >&5
-$as_echo "$ac_cv_stat_tv_nsec2" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_stat_tv_nsec2" >&5
+printf "%s\n" "$ac_cv_stat_tv_nsec2" >&6; }
 if test "$ac_cv_stat_tv_nsec2" = yes
 then
 
-$as_echo "#define HAVE_STAT_TV_NSEC2 1" >>confdefs.h
+printf "%s\n" "#define HAVE_STAT_TV_NSEC2 1" >>confdefs.h
 
 fi
 
@@ -22951,36 +25097,37 @@ have_curses=no
 have_panel=no
 
 
-for ac_header in curses.h ncurses.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
+ac_fn_c_check_header_compile "$LINENO" "curses.h" "ac_cv_header_curses_h" "$ac_includes_default"
+if test "x$ac_cv_header_curses_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_CURSES_H 1" >>confdefs.h
 
 fi
+ac_fn_c_check_header_compile "$LINENO" "ncurses.h" "ac_cv_header_ncurses_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncurses_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NCURSES_H 1" >>confdefs.h
 
-done
+fi
 
 
-if test "x$ac_cv_header_ncurses_h" = xyes; then :
+if test "x$ac_cv_header_ncurses_h" = xyes
+then :
 
   if test "$ac_sys_system" != "Darwin"; then
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CURSES" >&5
-$as_echo_n "checking for CURSES... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ncursesw" >&5
+printf %s "checking for ncursesw... " >&6; }
 
 if test -n "$CURSES_CFLAGS"; then
     pkg_cv_CURSES_CFLAGS="$CURSES_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncursesw\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncursesw\""; } >&5
   ($PKG_CONFIG --exists --print-errors "ncursesw") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_CURSES_CFLAGS=`$PKG_CONFIG --cflags "ncursesw" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -22994,10 +25141,10 @@ if test -n "$CURSES_LIBS"; then
     pkg_cv_CURSES_LIBS="$CURSES_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncursesw\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncursesw\""; } >&5
   ($PKG_CONFIG --exists --print-errors "ncursesw") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_CURSES_LIBS=`$PKG_CONFIG --libs "ncursesw" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23011,8 +25158,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -23034,11 +25181,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncursesw" >&5
-$as_echo_n "checking for initscr in -lncursesw... " >&6; }
-if ${ac_cv_lib_ncursesw_initscr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncursesw" >&5
+printf %s "checking for initscr in -lncursesw... " >&6; }
+if test ${ac_cv_lib_ncursesw_initscr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lncursesw  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23047,32 +25195,31 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char initscr ();
 int
-main ()
+main (void)
 {
 return initscr ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ncursesw_initscr=yes
-else
+else $as_nop
   ac_cv_lib_ncursesw_initscr=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncursesw_initscr" >&5
-$as_echo "$ac_cv_lib_ncursesw_initscr" >&6; }
-if test "x$ac_cv_lib_ncursesw_initscr" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncursesw_initscr" >&5
+printf "%s\n" "$ac_cv_lib_ncursesw_initscr" >&6; }
+if test "x$ac_cv_lib_ncursesw_initscr" = xyes
+then :
 
-          $as_echo "#define HAVE_NCURSESW 1" >>confdefs.h
+          printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
 
           have_curses=ncursesw
           CURSES_CFLAGS=${CURSES_CFLAGS-""}
@@ -23089,8 +25236,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
       save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -23098,11 +25245,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncursesw" >&5
-$as_echo_n "checking for initscr in -lncursesw... " >&6; }
-if ${ac_cv_lib_ncursesw_initscr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncursesw" >&5
+printf %s "checking for initscr in -lncursesw... " >&6; }
+if test ${ac_cv_lib_ncursesw_initscr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lncursesw  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23111,32 +25259,31 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char initscr ();
 int
-main ()
+main (void)
 {
 return initscr ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ncursesw_initscr=yes
-else
+else $as_nop
   ac_cv_lib_ncursesw_initscr=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncursesw_initscr" >&5
-$as_echo "$ac_cv_lib_ncursesw_initscr" >&6; }
-if test "x$ac_cv_lib_ncursesw_initscr" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncursesw_initscr" >&5
+printf "%s\n" "$ac_cv_lib_ncursesw_initscr" >&6; }
+if test "x$ac_cv_lib_ncursesw_initscr" = xyes
+then :
 
-          $as_echo "#define HAVE_NCURSESW 1" >>confdefs.h
+          printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
 
           have_curses=ncursesw
           CURSES_CFLAGS=${CURSES_CFLAGS-""}
@@ -23155,31 +25302,32 @@ LIBS=$save_LIBS
 else
 	CURSES_CFLAGS=$pkg_cv_CURSES_CFLAGS
 	CURSES_LIBS=$pkg_cv_CURSES_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-      $as_echo "#define HAVE_NCURSESW 1" >>confdefs.h
+      printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
 
       have_curses=ncursesw
 
 fi
   fi
 
-  if test "x$have_curses" = xno; then :
+  if test "x$have_curses" = xno
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CURSES" >&5
-$as_echo_n "checking for CURSES... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ncurses" >&5
+printf %s "checking for ncurses... " >&6; }
 
 if test -n "$CURSES_CFLAGS"; then
     pkg_cv_CURSES_CFLAGS="$CURSES_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncurses\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncurses\""; } >&5
   ($PKG_CONFIG --exists --print-errors "ncurses") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_CURSES_CFLAGS=`$PKG_CONFIG --cflags "ncurses" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23193,10 +25341,10 @@ if test -n "$CURSES_LIBS"; then
     pkg_cv_CURSES_LIBS="$CURSES_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncurses\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ncurses\""; } >&5
   ($PKG_CONFIG --exists --print-errors "ncurses") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_CURSES_LIBS=`$PKG_CONFIG --libs "ncurses" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23210,8 +25358,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -23233,11 +25381,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncurses" >&5
-$as_echo_n "checking for initscr in -lncurses... " >&6; }
-if ${ac_cv_lib_ncurses_initscr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncurses" >&5
+printf %s "checking for initscr in -lncurses... " >&6; }
+if test ${ac_cv_lib_ncurses_initscr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lncurses  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23246,30 +25395,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char initscr ();
 int
-main ()
+main (void)
 {
 return initscr ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ncurses_initscr=yes
-else
+else $as_nop
   ac_cv_lib_ncurses_initscr=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5
-$as_echo "$ac_cv_lib_ncurses_initscr" >&6; }
-if test "x$ac_cv_lib_ncurses_initscr" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5
+printf "%s\n" "$ac_cv_lib_ncurses_initscr" >&6; }
+if test "x$ac_cv_lib_ncurses_initscr" = xyes
+then :
 
           have_curses=ncurses
           CURSES_CFLAGS=${CURSES_CFLAGS-""}
@@ -23286,8 +25434,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
       save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -23295,11 +25443,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncurses" >&5
-$as_echo_n "checking for initscr in -lncurses... " >&6; }
-if ${ac_cv_lib_ncurses_initscr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncurses" >&5
+printf %s "checking for initscr in -lncurses... " >&6; }
+if test ${ac_cv_lib_ncurses_initscr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lncurses  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23308,30 +25457,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char initscr ();
 int
-main ()
+main (void)
 {
 return initscr ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_ncurses_initscr=yes
-else
+else $as_nop
   ac_cv_lib_ncurses_initscr=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5
-$as_echo "$ac_cv_lib_ncurses_initscr" >&6; }
-if test "x$ac_cv_lib_ncurses_initscr" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5
+printf "%s\n" "$ac_cv_lib_ncurses_initscr" >&6; }
+if test "x$ac_cv_lib_ncurses_initscr" = xyes
+then :
 
           have_curses=ncurses
           CURSES_CFLAGS=${CURSES_CFLAGS-""}
@@ -23350,8 +25498,8 @@ LIBS=$save_LIBS
 else
 	CURSES_CFLAGS=$pkg_cv_CURSES_CFLAGS
 	CURSES_LIBS=$pkg_cv_CURSES_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
       have_curses=ncurses
 
@@ -23363,60 +25511,58 @@ fi
 fi
 CURSES_CFLAGS=$(echo $CURSES_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-if test "$have_curses" = no -a "$ac_sys_system" = "Darwin"; then
+if test "$have_curses" != no -a "$ac_sys_system" = "Darwin"; then
 
   as_fn_append CURSES_CFLAGS " -D_XOPEN_SOURCE_EXTENDED=1"
-  $as_echo "#define HAVE_NCURSESW 1" >>confdefs.h
+  printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
 
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking curses module flags" >&5
-$as_echo_n "checking curses module flags... " >&6; }
-if test "x$have_curses" = xno; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking curses module flags" >&5
+printf %s "checking curses module flags... " >&6; }
+if test "x$have_curses" = xno
+then :
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
-else
+else $as_nop
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)" >&5
-$as_echo "$have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)" >&5
+printf "%s\n" "$have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)" >&6; }
 
 fi
 
-for ac_header in panel.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "panel.h" "ac_cv_header_panel_h" "$ac_includes_default"
-if test "x$ac_cv_header_panel_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PANEL_H 1
-_ACEOF
+ac_fn_c_check_header_compile "$LINENO" "panel.h" "ac_cv_header_panel_h" "$ac_includes_default"
+if test "x$ac_cv_header_panel_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_PANEL_H 1" >>confdefs.h
 
 fi
 
-done
-
 
-if test "x$ac_cv_header_panel_h" = xyes; then :
+if test "x$ac_cv_header_panel_h" = xyes
+then :
 
 
   if test "$ac_sys_system" != "Darwin"; then
-        if test "x$have_curses" = xncursesw; then :
+        if test "x$have_curses" = xncursesw
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for PANEL" >&5
-$as_echo_n "checking for PANEL... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for panelw" >&5
+printf %s "checking for panelw... " >&6; }
 
 if test -n "$PANEL_CFLAGS"; then
     pkg_cv_PANEL_CFLAGS="$PANEL_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
   ($PKG_CONFIG --exists --print-errors "panelw") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_PANEL_CFLAGS=`$PKG_CONFIG --cflags "panelw" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23430,10 +25576,10 @@ if test -n "$PANEL_LIBS"; then
     pkg_cv_PANEL_LIBS="$PANEL_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
   ($PKG_CONFIG --exists --print-errors "panelw") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_PANEL_LIBS=`$PKG_CONFIG --libs "panelw" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23447,8 +25593,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -23470,11 +25616,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-          { $as_echo "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanelw" >&5
-$as_echo_n "checking for update_panels in -lpanelw... " >&6; }
-if ${ac_cv_lib_panelw_update_panels+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanelw" >&5
+printf %s "checking for update_panels in -lpanelw... " >&6; }
+if test ${ac_cv_lib_panelw_update_panels+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lpanelw  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23483,30 +25630,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char update_panels ();
 int
-main ()
+main (void)
 {
 return update_panels ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_panelw_update_panels=yes
-else
+else $as_nop
   ac_cv_lib_panelw_update_panels=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panelw_update_panels" >&5
-$as_echo "$ac_cv_lib_panelw_update_panels" >&6; }
-if test "x$ac_cv_lib_panelw_update_panels" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panelw_update_panels" >&5
+printf "%s\n" "$ac_cv_lib_panelw_update_panels" >&6; }
+if test "x$ac_cv_lib_panelw_update_panels" = xyes
+then :
 
             have_panel=panelw
             PANEL_CFLAGS=${PANEL_CFLAGS-""}
@@ -23523,8 +25669,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
         save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -23532,11 +25678,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-          { $as_echo "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanelw" >&5
-$as_echo_n "checking for update_panels in -lpanelw... " >&6; }
-if ${ac_cv_lib_panelw_update_panels+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanelw" >&5
+printf %s "checking for update_panels in -lpanelw... " >&6; }
+if test ${ac_cv_lib_panelw_update_panels+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lpanelw  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23545,30 +25692,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char update_panels ();
 int
-main ()
+main (void)
 {
 return update_panels ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_panelw_update_panels=yes
-else
+else $as_nop
   ac_cv_lib_panelw_update_panels=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panelw_update_panels" >&5
-$as_echo "$ac_cv_lib_panelw_update_panels" >&6; }
-if test "x$ac_cv_lib_panelw_update_panels" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panelw_update_panels" >&5
+printf "%s\n" "$ac_cv_lib_panelw_update_panels" >&6; }
+if test "x$ac_cv_lib_panelw_update_panels" = xyes
+then :
 
             have_panel=panelw
             PANEL_CFLAGS=${PANEL_CFLAGS-""}
@@ -23587,8 +25733,8 @@ LIBS=$save_LIBS
 else
 	PANEL_CFLAGS=$pkg_cv_PANEL_CFLAGS
 	PANEL_LIBS=$pkg_cv_PANEL_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
         have_panel=panelw
 
@@ -23597,21 +25743,22 @@ fi
 fi
   fi
 
-  if test "x$have_curses" = xncurses; then :
+  if test "x$have_curses" = xncurses
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for PANEL" >&5
-$as_echo_n "checking for PANEL... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for panel" >&5
+printf %s "checking for panel... " >&6; }
 
 if test -n "$PANEL_CFLAGS"; then
     pkg_cv_PANEL_CFLAGS="$PANEL_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
   ($PKG_CONFIG --exists --print-errors "panel") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_PANEL_CFLAGS=`$PKG_CONFIG --cflags "panel" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23625,10 +25772,10 @@ if test -n "$PANEL_LIBS"; then
     pkg_cv_PANEL_LIBS="$PANEL_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
   ($PKG_CONFIG --exists --print-errors "panel") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_PANEL_LIBS=`$PKG_CONFIG --libs "panel" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -23642,8 +25789,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -23665,11 +25812,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanel" >&5
-$as_echo_n "checking for update_panels in -lpanel... " >&6; }
-if ${ac_cv_lib_panel_update_panels+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanel" >&5
+printf %s "checking for update_panels in -lpanel... " >&6; }
+if test ${ac_cv_lib_panel_update_panels+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lpanel  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23678,30 +25826,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char update_panels ();
 int
-main ()
+main (void)
 {
 return update_panels ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_panel_update_panels=yes
-else
+else $as_nop
   ac_cv_lib_panel_update_panels=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panel_update_panels" >&5
-$as_echo "$ac_cv_lib_panel_update_panels" >&6; }
-if test "x$ac_cv_lib_panel_update_panels" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panel_update_panels" >&5
+printf "%s\n" "$ac_cv_lib_panel_update_panels" >&6; }
+if test "x$ac_cv_lib_panel_update_panels" = xyes
+then :
 
           have_panel=panel
           PANEL_CFLAGS=${PANEL_CFLAGS-""}
@@ -23718,8 +25865,8 @@ LIBS=$save_LIBS
 
 
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
       save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
@@ -23727,11 +25874,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanel" >&5
-$as_echo_n "checking for update_panels in -lpanel... " >&6; }
-if ${ac_cv_lib_panel_update_panels+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanel" >&5
+printf %s "checking for update_panels in -lpanel... " >&6; }
+if test ${ac_cv_lib_panel_update_panels+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_check_lib_save_LIBS=$LIBS
 LIBS="-lpanel  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -23740,30 +25888,29 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char update_panels ();
 int
-main ()
+main (void)
 {
 return update_panels ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_lib_panel_update_panels=yes
-else
+else $as_nop
   ac_cv_lib_panel_update_panels=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panel_update_panels" >&5
-$as_echo "$ac_cv_lib_panel_update_panels" >&6; }
-if test "x$ac_cv_lib_panel_update_panels" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panel_update_panels" >&5
+printf "%s\n" "$ac_cv_lib_panel_update_panels" >&6; }
+if test "x$ac_cv_lib_panel_update_panels" = xyes
+then :
 
           have_panel=panel
           PANEL_CFLAGS=${PANEL_CFLAGS-""}
@@ -23782,8 +25929,8 @@ LIBS=$save_LIBS
 else
 	PANEL_CFLAGS=$pkg_cv_PANEL_CFLAGS
 	PANEL_LIBS=$pkg_cv_PANEL_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
       have_panel=panel
 
@@ -23795,17 +25942,18 @@ fi
 fi
 PANEL_CFLAGS=$(echo $PANEL_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking panel flags" >&5
-$as_echo_n "checking panel flags... " >&6; }
-if test "x$have_panel" = xno; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking panel flags" >&5
+printf %s "checking panel flags... " >&6; }
+if test "x$have_panel" = xno
+then :
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
-else
+else $as_nop
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)" >&5
-$as_echo "$have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)" >&5
+printf "%s\n" "$have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)" >&6; }
 
 fi
 
@@ -23816,35 +25964,31 @@ if test "$cross_compiling" = no; then
 fi
 
 # On Solaris, term.h requires curses.h
-for ac_header in term.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "term.h" "ac_cv_header_term_h" "
+ac_fn_c_check_header_compile "$LINENO" "term.h" "ac_cv_header_term_h" "
 #ifdef HAVE_CURSES_H
 #include <curses.h>
 #endif
 
 "
-if test "x$ac_cv_header_term_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_TERM_H 1
-_ACEOF
+if test "x$ac_cv_header_term_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_TERM_H 1" >>confdefs.h
 
 fi
 
-done
-
 
 # On HP/UX 11.0, mvwdelch is a block with a return statement
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether mvwdelch is an expression" >&5
-$as_echo_n "checking whether mvwdelch is an expression... " >&6; }
-if ${ac_cv_mvwdelch_is_expression+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mvwdelch is an expression" >&5
+printf %s "checking whether mvwdelch is an expression... " >&6; }
+if test ${ac_cv_mvwdelch_is_expression+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
   int rtn;
@@ -23854,20 +25998,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_mvwdelch_is_expression=yes
-else
+else $as_nop
   ac_cv_mvwdelch_is_expression=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_mvwdelch_is_expression" >&5
-$as_echo "$ac_cv_mvwdelch_is_expression" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_mvwdelch_is_expression" >&5
+printf "%s\n" "$ac_cv_mvwdelch_is_expression" >&6; }
 
 if test "$ac_cv_mvwdelch_is_expression" = yes
 then
 
-$as_echo "#define MVWDELCH_IS_EXPRESSION 1" >>confdefs.h
+printf "%s\n" "#define MVWDELCH_IS_EXPRESSION 1" >>confdefs.h
 
 fi
 
@@ -23875,11 +26020,12 @@ fi
 # structs since version 5.7.  If the macro is defined as zero before including
 # [n]curses.h, ncurses will expose fields of the structs regardless of the
 # configuration.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether WINDOW has _flags" >&5
-$as_echo_n "checking whether WINDOW has _flags... " >&6; }
-if ${ac_cv_window_has_flags+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether WINDOW has _flags" >&5
+printf %s "checking whether WINDOW has _flags... " >&6; }
+if test ${ac_cv_window_has_flags+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -23887,7 +26033,7 @@ else
   #include <curses.h>
 
 int
-main ()
+main (void)
 {
 
   WINDOW *w;
@@ -23897,21 +26043,22 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_window_has_flags=yes
-else
+else $as_nop
   ac_cv_window_has_flags=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_window_has_flags" >&5
-$as_echo "$ac_cv_window_has_flags" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_window_has_flags" >&5
+printf "%s\n" "$ac_cv_window_has_flags" >&6; }
 
 
 if test "$ac_cv_window_has_flags" = yes
 then
 
-$as_echo "#define WINDOW_HAS_FLAGS 1" >>confdefs.h
+printf "%s\n" "#define WINDOW_HAS_FLAGS 1" >>confdefs.h
 
 fi
 
@@ -23919,16 +26066,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function is_pad" >&5
-$as_echo_n "checking for curses function is_pad... " >&6; }
-if ${ac_cv_lib_curses_is_pad+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function is_pad" >&5
+printf %s "checking for curses function is_pad... " >&6; }
+if test ${ac_cv_lib_curses_is_pad+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef is_pad
@@ -23939,19 +26087,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_is_pad=yes
-else
+else $as_nop
   ac_cv_lib_curses_is_pad=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_is_pad" >&5
-$as_echo "$ac_cv_lib_curses_is_pad" >&6; }
-  if test "x$ac_cv_lib_curses_is_pad" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_is_pad" >&5
+printf "%s\n" "$ac_cv_lib_curses_is_pad" >&6; }
+  if test "x$ac_cv_lib_curses_is_pad" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_IS_PAD 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_IS_PAD 1" >>confdefs.h
 
 fi
 
@@ -23959,16 +26109,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function is_term_resized" >&5
-$as_echo_n "checking for curses function is_term_resized... " >&6; }
-if ${ac_cv_lib_curses_is_term_resized+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function is_term_resized" >&5
+printf %s "checking for curses function is_term_resized... " >&6; }
+if test ${ac_cv_lib_curses_is_term_resized+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef is_term_resized
@@ -23979,19 +26130,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_is_term_resized=yes
-else
+else $as_nop
   ac_cv_lib_curses_is_term_resized=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_is_term_resized" >&5
-$as_echo "$ac_cv_lib_curses_is_term_resized" >&6; }
-  if test "x$ac_cv_lib_curses_is_term_resized" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_is_term_resized" >&5
+printf "%s\n" "$ac_cv_lib_curses_is_term_resized" >&6; }
+  if test "x$ac_cv_lib_curses_is_term_resized" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_IS_TERM_RESIZED 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_IS_TERM_RESIZED 1" >>confdefs.h
 
 fi
 
@@ -23999,16 +26152,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function resize_term" >&5
-$as_echo_n "checking for curses function resize_term... " >&6; }
-if ${ac_cv_lib_curses_resize_term+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function resize_term" >&5
+printf %s "checking for curses function resize_term... " >&6; }
+if test ${ac_cv_lib_curses_resize_term+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef resize_term
@@ -24019,19 +26173,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_resize_term=yes
-else
+else $as_nop
   ac_cv_lib_curses_resize_term=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_resize_term" >&5
-$as_echo "$ac_cv_lib_curses_resize_term" >&6; }
-  if test "x$ac_cv_lib_curses_resize_term" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_resize_term" >&5
+printf "%s\n" "$ac_cv_lib_curses_resize_term" >&6; }
+  if test "x$ac_cv_lib_curses_resize_term" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_RESIZE_TERM 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_RESIZE_TERM 1" >>confdefs.h
 
 fi
 
@@ -24039,16 +26195,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function resizeterm" >&5
-$as_echo_n "checking for curses function resizeterm... " >&6; }
-if ${ac_cv_lib_curses_resizeterm+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function resizeterm" >&5
+printf %s "checking for curses function resizeterm... " >&6; }
+if test ${ac_cv_lib_curses_resizeterm+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef resizeterm
@@ -24059,19 +26216,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_resizeterm=yes
-else
+else $as_nop
   ac_cv_lib_curses_resizeterm=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_resizeterm" >&5
-$as_echo "$ac_cv_lib_curses_resizeterm" >&6; }
-  if test "x$ac_cv_lib_curses_resizeterm" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_resizeterm" >&5
+printf "%s\n" "$ac_cv_lib_curses_resizeterm" >&6; }
+  if test "x$ac_cv_lib_curses_resizeterm" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_RESIZETERM 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_RESIZETERM 1" >>confdefs.h
 
 fi
 
@@ -24079,16 +26238,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function immedok" >&5
-$as_echo_n "checking for curses function immedok... " >&6; }
-if ${ac_cv_lib_curses_immedok+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function immedok" >&5
+printf %s "checking for curses function immedok... " >&6; }
+if test ${ac_cv_lib_curses_immedok+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef immedok
@@ -24099,19 +26259,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_immedok=yes
-else
+else $as_nop
   ac_cv_lib_curses_immedok=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_immedok" >&5
-$as_echo "$ac_cv_lib_curses_immedok" >&6; }
-  if test "x$ac_cv_lib_curses_immedok" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_immedok" >&5
+printf "%s\n" "$ac_cv_lib_curses_immedok" >&6; }
+  if test "x$ac_cv_lib_curses_immedok" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_IMMEDOK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_IMMEDOK 1" >>confdefs.h
 
 fi
 
@@ -24119,16 +26281,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function syncok" >&5
-$as_echo_n "checking for curses function syncok... " >&6; }
-if ${ac_cv_lib_curses_syncok+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function syncok" >&5
+printf %s "checking for curses function syncok... " >&6; }
+if test ${ac_cv_lib_curses_syncok+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef syncok
@@ -24139,19 +26302,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_syncok=yes
-else
+else $as_nop
   ac_cv_lib_curses_syncok=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_syncok" >&5
-$as_echo "$ac_cv_lib_curses_syncok" >&6; }
-  if test "x$ac_cv_lib_curses_syncok" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_syncok" >&5
+printf "%s\n" "$ac_cv_lib_curses_syncok" >&6; }
+  if test "x$ac_cv_lib_curses_syncok" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_SYNCOK 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_SYNCOK 1" >>confdefs.h
 
 fi
 
@@ -24159,16 +26324,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function wchgat" >&5
-$as_echo_n "checking for curses function wchgat... " >&6; }
-if ${ac_cv_lib_curses_wchgat+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function wchgat" >&5
+printf %s "checking for curses function wchgat... " >&6; }
+if test ${ac_cv_lib_curses_wchgat+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef wchgat
@@ -24179,19 +26345,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_wchgat=yes
-else
+else $as_nop
   ac_cv_lib_curses_wchgat=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_wchgat" >&5
-$as_echo "$ac_cv_lib_curses_wchgat" >&6; }
-  if test "x$ac_cv_lib_curses_wchgat" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_wchgat" >&5
+printf "%s\n" "$ac_cv_lib_curses_wchgat" >&6; }
+  if test "x$ac_cv_lib_curses_wchgat" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_WCHGAT 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_WCHGAT 1" >>confdefs.h
 
 fi
 
@@ -24199,16 +26367,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function filter" >&5
-$as_echo_n "checking for curses function filter... " >&6; }
-if ${ac_cv_lib_curses_filter+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function filter" >&5
+printf %s "checking for curses function filter... " >&6; }
+if test ${ac_cv_lib_curses_filter+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef filter
@@ -24219,19 +26388,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_filter=yes
-else
+else $as_nop
   ac_cv_lib_curses_filter=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_filter" >&5
-$as_echo "$ac_cv_lib_curses_filter" >&6; }
-  if test "x$ac_cv_lib_curses_filter" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_filter" >&5
+printf "%s\n" "$ac_cv_lib_curses_filter" >&6; }
+  if test "x$ac_cv_lib_curses_filter" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_FILTER 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_FILTER 1" >>confdefs.h
 
 fi
 
@@ -24239,16 +26410,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function has_key" >&5
-$as_echo_n "checking for curses function has_key... " >&6; }
-if ${ac_cv_lib_curses_has_key+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function has_key" >&5
+printf %s "checking for curses function has_key... " >&6; }
+if test ${ac_cv_lib_curses_has_key+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef has_key
@@ -24259,19 +26431,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_has_key=yes
-else
+else $as_nop
   ac_cv_lib_curses_has_key=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_has_key" >&5
-$as_echo "$ac_cv_lib_curses_has_key" >&6; }
-  if test "x$ac_cv_lib_curses_has_key" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_has_key" >&5
+printf "%s\n" "$ac_cv_lib_curses_has_key" >&6; }
+  if test "x$ac_cv_lib_curses_has_key" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_HAS_KEY 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_HAS_KEY 1" >>confdefs.h
 
 fi
 
@@ -24279,16 +26453,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function typeahead" >&5
-$as_echo_n "checking for curses function typeahead... " >&6; }
-if ${ac_cv_lib_curses_typeahead+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function typeahead" >&5
+printf %s "checking for curses function typeahead... " >&6; }
+if test ${ac_cv_lib_curses_typeahead+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef typeahead
@@ -24299,19 +26474,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_typeahead=yes
-else
+else $as_nop
   ac_cv_lib_curses_typeahead=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_typeahead" >&5
-$as_echo "$ac_cv_lib_curses_typeahead" >&6; }
-  if test "x$ac_cv_lib_curses_typeahead" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_typeahead" >&5
+printf "%s\n" "$ac_cv_lib_curses_typeahead" >&6; }
+  if test "x$ac_cv_lib_curses_typeahead" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_TYPEAHEAD 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_TYPEAHEAD 1" >>confdefs.h
 
 fi
 
@@ -24319,16 +26496,17 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for curses function use_env" >&5
-$as_echo_n "checking for curses function use_env... " >&6; }
-if ${ac_cv_lib_curses_use_env+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for curses function use_env" >&5
+printf %s "checking for curses function use_env... " >&6; }
+if test ${ac_cv_lib_curses_use_env+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <curses.h>
 int
-main ()
+main (void)
 {
 
         #ifndef use_env
@@ -24339,19 +26517,21 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_lib_curses_use_env=yes
-else
+else $as_nop
   ac_cv_lib_curses_use_env=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_use_env" >&5
-$as_echo "$ac_cv_lib_curses_use_env" >&6; }
-  if test "x$ac_cv_lib_curses_use_env" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_curses_use_env" >&5
+printf "%s\n" "$ac_cv_lib_curses_use_env" >&6; }
+  if test "x$ac_cv_lib_curses_use_env" = xyes
+then :
 
-$as_echo "#define HAVE_CURSES_USE_ENV 1" >>confdefs.h
+printf "%s\n" "#define HAVE_CURSES_USE_ENV 1" >>confdefs.h
 
 fi
 
@@ -24359,31 +26539,32 @@ fi
 
 CPPFLAGS=$ac_save_cppflags
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for device files" >&5
-$as_echo "$as_me: checking for device files" >&6;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for device files" >&5
+printf "%s\n" "$as_me: checking for device files" >&6;}
 
 if test "x$cross_compiling" = xyes; then
   if test "${ac_cv_file__dev_ptmx+set}" != set; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for /dev/ptmx" >&5
-$as_echo_n "checking for /dev/ptmx... " >&6; }
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: not set" >&5
-$as_echo "not set" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for /dev/ptmx" >&5
+printf %s "checking for /dev/ptmx... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not set" >&5
+printf "%s\n" "not set" >&6; }
     as_fn_error $? "set ac_cv_file__dev_ptmx to yes/no in your CONFIG_SITE file when cross compiling" "$LINENO" 5
   fi
   if test "${ac_cv_file__dev_ptc+set}" != set; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for /dev/ptc" >&5
-$as_echo_n "checking for /dev/ptc... " >&6; }
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: not set" >&5
-$as_echo "not set" >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for /dev/ptc" >&5
+printf %s "checking for /dev/ptc... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not set" >&5
+printf "%s\n" "not set" >&6; }
     as_fn_error $? "set ac_cv_file__dev_ptc to yes/no in your CONFIG_SITE file when cross compiling" "$LINENO" 5
   fi
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for /dev/ptmx" >&5
-$as_echo_n "checking for /dev/ptmx... " >&6; }
-if ${ac_cv_file__dev_ptmx+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for /dev/ptmx" >&5
+printf %s "checking for /dev/ptmx... " >&6; }
+if test ${ac_cv_file__dev_ptmx+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   test "$cross_compiling" = yes &&
   as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
 if test -r "/dev/ptmx"; then
@@ -24392,22 +26573,24 @@ else
   ac_cv_file__dev_ptmx=no
 fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file__dev_ptmx" >&5
-$as_echo "$ac_cv_file__dev_ptmx" >&6; }
-if test "x$ac_cv_file__dev_ptmx" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file__dev_ptmx" >&5
+printf "%s\n" "$ac_cv_file__dev_ptmx" >&6; }
+if test "x$ac_cv_file__dev_ptmx" = xyes
+then :
 
 fi
 
 if test "x$ac_cv_file__dev_ptmx" = xyes; then
 
-$as_echo "#define HAVE_DEV_PTMX 1" >>confdefs.h
+printf "%s\n" "#define HAVE_DEV_PTMX 1" >>confdefs.h
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for /dev/ptc" >&5
-$as_echo_n "checking for /dev/ptc... " >&6; }
-if ${ac_cv_file__dev_ptc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for /dev/ptc" >&5
+printf %s "checking for /dev/ptc... " >&6; }
+if test ${ac_cv_file__dev_ptc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   test "$cross_compiling" = yes &&
   as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
 if test -r "/dev/ptc"; then
@@ -24416,15 +26599,16 @@ else
   ac_cv_file__dev_ptc=no
 fi
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file__dev_ptc" >&5
-$as_echo "$ac_cv_file__dev_ptc" >&6; }
-if test "x$ac_cv_file__dev_ptc" = xyes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file__dev_ptc" >&5
+printf "%s\n" "$ac_cv_file__dev_ptc" >&6; }
+if test "x$ac_cv_file__dev_ptc" = xyes
+then :
 
 fi
 
 if test "x$ac_cv_file__dev_ptc" = xyes; then
 
-$as_echo "#define HAVE_DEV_PTC 1" >>confdefs.h
+printf "%s\n" "#define HAVE_DEV_PTC 1" >>confdefs.h
 
 fi
 
@@ -24442,23 +26626,26 @@ ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "
 #endif
 
 "
-if test "x$ac_cv_type_socklen_t" = xyes; then :
+if test "x$ac_cv_type_socklen_t" = xyes
+then :
 
-else
+else $as_nop
 
-$as_echo "#define socklen_t int" >>confdefs.h
+printf "%s\n" "#define socklen_t int" >>confdefs.h
 
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken mbstowcs" >&5
-$as_echo_n "checking for broken mbstowcs... " >&6; }
-if ${ac_cv_broken_mbstowcs+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for broken mbstowcs" >&5
+printf %s "checking for broken mbstowcs... " >&6; }
+if test ${ac_cv_broken_mbstowcs+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   ac_cv_broken_mbstowcs=no
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -24473,9 +26660,10 @@ int main(void) {
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_broken_mbstowcs=no
-else
+else $as_nop
   ac_cv_broken_mbstowcs=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -24483,57 +26671,60 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_mbstowcs" >&5
-$as_echo "$ac_cv_broken_mbstowcs" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_broken_mbstowcs" >&5
+printf "%s\n" "$ac_cv_broken_mbstowcs" >&6; }
 if test "$ac_cv_broken_mbstowcs" = yes
 then
 
-$as_echo "#define HAVE_BROKEN_MBSTOWCS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_MBSTOWCS 1" >>confdefs.h
 
 fi
 
 # Check for --with-computed-gotos
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-computed-gotos" >&5
-$as_echo_n "checking for --with-computed-gotos... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-computed-gotos" >&5
+printf %s "checking for --with-computed-gotos... " >&6; }
 
 # Check whether --with-computed-gotos was given.
-if test "${with_computed_gotos+set}" = set; then :
+if test ${with_computed_gotos+y}
+then :
   withval=$with_computed_gotos;
 if test "$withval" = yes
 then
 
-$as_echo "#define USE_COMPUTED_GOTOS 1" >>confdefs.h
+printf "%s\n" "#define USE_COMPUTED_GOTOS 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 fi
 if test "$withval" = no
 then
 
-$as_echo "#define USE_COMPUTED_GOTOS 0" >>confdefs.h
+printf "%s\n" "#define USE_COMPUTED_GOTOS 0" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no value specified" >&5
-$as_echo "no value specified" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no value specified" >&5
+printf "%s\n" "no value specified" >&6; }
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports computed gotos" >&5
-$as_echo_n "checking whether $CC supports computed gotos... " >&6; }
-if ${ac_cv_computed_gotos+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC supports computed gotos" >&5
+printf %s "checking whether $CC supports computed gotos... " >&6; }
+if test ${ac_cv_computed_gotos+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
   if test "${with_computed_gotos+set}" = set; then
    ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos"
  else
    ac_cv_computed_gotos=no
  fi
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -24549,9 +26740,10 @@ LABEL2:
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   ac_cv_computed_gotos=yes
-else
+else $as_nop
   ac_cv_computed_gotos=no
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -24559,18 +26751,18 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_computed_gotos" >&5
-$as_echo "$ac_cv_computed_gotos" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_computed_gotos" >&5
+printf "%s\n" "$ac_cv_computed_gotos" >&6; }
 case "$ac_cv_computed_gotos" in yes*)
 
-$as_echo "#define HAVE_COMPUTED_GOTOS 1" >>confdefs.h
+printf "%s\n" "#define HAVE_COMPUTED_GOTOS 1" >>confdefs.h
 
 esac
 
 case $ac_sys_system in
 AIX*)
 
-$as_echo "#define HAVE_BROKEN_PIPE_BUF 1" >>confdefs.h
+printf "%s\n" "#define HAVE_BROKEN_PIPE_BUF 1" >>confdefs.h
  ;;
 esac
 
@@ -24592,35 +26784,40 @@ SRCDIRS="\
   Modules/_hacl \
   Modules/_io \
   Modules/_multiprocessing \
-  Modules/_sha3 \
   Modules/_sqlite \
   Modules/_sre \
   Modules/_testcapi \
+  Modules/_testinternalcapi \
   Modules/_xxtestfuzz \
   Modules/cjkcodecs \
   Modules/expat \
   Objects \
+  Objects/mimalloc \
+  Objects/mimalloc/prim \
   Parser \
+  Parser/tokenizer \
+  Parser/lexer \
   Programs \
   Python \
   Python/frozen_modules \
   Python/deepfreeze"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for build directories" >&5
-$as_echo_n "checking for build directories... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for build directories" >&5
+printf %s "checking for build directories... " >&6; }
 for dir in $SRCDIRS; do
     if test ! -d $dir; then
         mkdir $dir
     fi
 done
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: done" >&5
-$as_echo "done" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: done" >&5
+printf "%s\n" "done" >&6; }
 
 # Availability of -O2:
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -O2" >&5
-$as_echo_n "checking for -O2... " >&6; }
-if ${ac_cv_compile_o2+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -O2" >&5
+printf %s "checking for -O2... " >&6; }
+if test ${ac_cv_compile_o2+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 saved_cflags="$CFLAGS"
 CFLAGS="-O2"
@@ -24628,37 +26825,39 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 int
-main ()
+main (void)
 {
 
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"
+then :
   ac_cv_compile_o2=yes
-else
+else $as_nop
   ac_cv_compile_o2=no
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 CFLAGS="$saved_cflags"
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_compile_o2" >&5
-$as_echo "$ac_cv_compile_o2" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_compile_o2" >&5
+printf "%s\n" "$ac_cv_compile_o2" >&6; }
 
 # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect:
 # http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for glibc _FORTIFY_SOURCE/memmove bug" >&5
-$as_echo_n "checking for glibc _FORTIFY_SOURCE/memmove bug... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for glibc _FORTIFY_SOURCE/memmove bug" >&5
+printf %s "checking for glibc _FORTIFY_SOURCE/memmove bug... " >&6; }
 saved_cflags="$CFLAGS"
 CFLAGS="-O2 -D_FORTIFY_SOURCE=2"
 if test "$ac_cv_compile_o2" = no; then
     CFLAGS=""
 fi
-if test "$cross_compiling" = yes; then :
+if test "$cross_compiling" = yes
+then :
   have_glibc_memmove_bug=undefined
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -24678,9 +26877,10 @@ int main(void) {
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   have_glibc_memmove_bug=no
-else
+else $as_nop
   have_glibc_memmove_bug=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -24688,11 +26888,11 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
 CFLAGS="$saved_cflags"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_glibc_memmove_bug" >&5
-$as_echo "$have_glibc_memmove_bug" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_glibc_memmove_bug" >&5
+printf "%s\n" "$have_glibc_memmove_bug" >&6; }
 if test "$have_glibc_memmove_bug" = yes; then
 
-$as_echo "#define HAVE_GLIBC_MEMMOVE_BUG 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GLIBC_MEMMOVE_BUG 1" >>confdefs.h
 
 fi
 
@@ -24702,13 +26902,14 @@ if test "$ac_cv_gcc_asm_for_x87" = yes; then
     # http://gcc.gnu.org/ml/gcc/2010-11/msg00366.html
     case $CC in
         *gcc*)
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gcc ipa-pure-const bug" >&5
-$as_echo_n "checking for gcc ipa-pure-const bug... " >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gcc ipa-pure-const bug" >&5
+printf %s "checking for gcc ipa-pure-const bug... " >&6; }
             saved_cflags="$CFLAGS"
             CFLAGS="-O2"
-            if test "$cross_compiling" = yes; then :
+            if test "$cross_compiling" = yes
+then :
   have_ipa_pure_const_bug=undefined
-else
+else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -24729,9 +26930,10 @@ else
             }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_run "$LINENO"
+then :
   have_ipa_pure_const_bug=no
-else
+else $as_nop
   have_ipa_pure_const_bug=yes
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -24739,108 +26941,26 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 fi
 
             CFLAGS="$saved_cflags"
-            { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_ipa_pure_const_bug" >&5
-$as_echo "$have_ipa_pure_const_bug" >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_ipa_pure_const_bug" >&5
+printf "%s\n" "$have_ipa_pure_const_bug" >&6; }
             if test "$have_ipa_pure_const_bug" = yes; then
 
-$as_echo "#define HAVE_IPA_PURE_CONST_BUG 1" >>confdefs.h
+printf "%s\n" "#define HAVE_IPA_PURE_CONST_BUG 1" >>confdefs.h
 
             fi
         ;;
     esac
 fi
 
-# Check for stdatomic.h
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdatomic.h" >&5
-$as_echo_n "checking for stdatomic.h... " >&6; }
-if ${ac_cv_header_stdatomic_h+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-    #include <stdatomic.h>
-    atomic_int int_var;
-    atomic_uintptr_t uintptr_var;
-    int main(void) {
-      atomic_store_explicit(&int_var, 5, memory_order_relaxed);
-      atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed);
-      int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst);
-      return 0;
-    }
-
-
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_header_stdatomic_h=yes
-else
-  ac_cv_header_stdatomic_h=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdatomic_h" >&5
-$as_echo "$ac_cv_header_stdatomic_h" >&6; }
-
-if test "x$ac_cv_header_stdatomic_h" = xyes; then :
-
-
-$as_echo "#define HAVE_STD_ATOMIC 1" >>confdefs.h
-
-
-fi
-
-# Check for GCC >= 4.7 and clang __atomic builtin functions
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for builtin __atomic_load_n and __atomic_store_n functions" >&5
-$as_echo_n "checking for builtin __atomic_load_n and __atomic_store_n functions... " >&6; }
-if ${ac_cv_builtin_atomic+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-    int val;
-    int main(void) {
-      __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST);
-      (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST);
-      return 0;
-    }
-
-
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_builtin_atomic=yes
-else
-  ac_cv_builtin_atomic=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_builtin_atomic" >&5
-$as_echo "$ac_cv_builtin_atomic" >&6; }
-
-if test "x$ac_cv_builtin_atomic" = xyes; then :
-
-
-$as_echo "#define HAVE_BUILTIN_ATOMIC 1" >>confdefs.h
-
-
-fi
-
 # ensurepip option
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ensurepip" >&5
-$as_echo_n "checking for ensurepip... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ensurepip" >&5
+printf %s "checking for ensurepip... " >&6; }
 
 # Check whether --with-ensurepip was given.
-if test "${with_ensurepip+set}" = set; then :
+if test ${with_ensurepip+y}
+then :
   withval=$with_ensurepip;
-else
+else $as_nop
 
       case $ac_sys_system in #(
   Emscripten) :
@@ -24864,16 +26984,17 @@ case $with_ensurepip in #(
   *) :
     as_fn_error $? "--with-ensurepip=upgrade|install|no" "$LINENO" 5 ;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ENSUREPIP" >&5
-$as_echo "$ENSUREPIP" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ENSUREPIP" >&5
+printf "%s\n" "$ENSUREPIP" >&6; }
 
 
 # check if the dirent structure of a d_type field and DT_UNKNOWN is defined
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the dirent structure of a d_type field" >&5
-$as_echo_n "checking if the dirent structure of a d_type field... " >&6; }
-if ${ac_cv_dirent_d_type+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the dirent structure of a d_type field" >&5
+printf %s "checking if the dirent structure of a d_type field... " >&6; }
+if test ${ac_cv_dirent_d_type+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -24888,32 +27009,35 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_dirent_d_type=yes
-else
+else $as_nop
   ac_cv_dirent_d_type=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_dirent_d_type" >&5
-$as_echo "$ac_cv_dirent_d_type" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_dirent_d_type" >&5
+printf "%s\n" "$ac_cv_dirent_d_type" >&6; }
 
-if test "x$ac_cv_dirent_d_type" = xyes; then :
+if test "x$ac_cv_dirent_d_type" = xyes
+then :
 
 
-$as_echo "#define HAVE_DIRENT_D_TYPE 1" >>confdefs.h
+printf "%s\n" "#define HAVE_DIRENT_D_TYPE 1" >>confdefs.h
 
 
 fi
 
 # check if the Linux getrandom() syscall is available
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for the Linux getrandom() syscall" >&5
-$as_echo_n "checking for the Linux getrandom() syscall... " >&6; }
-if ${ac_cv_getrandom_syscall+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the Linux getrandom() syscall" >&5
+printf %s "checking for the Linux getrandom() syscall... " >&6; }
+if test ${ac_cv_getrandom_syscall+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -24935,33 +27059,36 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_getrandom_syscall=yes
-else
+else $as_nop
   ac_cv_getrandom_syscall=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_getrandom_syscall" >&5
-$as_echo "$ac_cv_getrandom_syscall" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_getrandom_syscall" >&5
+printf "%s\n" "$ac_cv_getrandom_syscall" >&6; }
 
-if test "x$ac_cv_getrandom_syscall" = xyes; then :
+if test "x$ac_cv_getrandom_syscall" = xyes
+then :
 
 
-$as_echo "#define HAVE_GETRANDOM_SYSCALL 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETRANDOM_SYSCALL 1" >>confdefs.h
 
 
 fi
 
 # check if the getrandom() function is available
 # the test was written for the Solaris function of <sys/random.h>
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for the getrandom() function" >&5
-$as_echo_n "checking for the getrandom() function... " >&6; }
-if ${ac_cv_func_getrandom+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the getrandom() function" >&5
+printf %s "checking for the getrandom() function... " >&6; }
+if test ${ac_cv_func_getrandom+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -24981,22 +27108,24 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_func_getrandom=yes
-else
+else $as_nop
   ac_cv_func_getrandom=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getrandom" >&5
-$as_echo "$ac_cv_func_getrandom" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_getrandom" >&5
+printf "%s\n" "$ac_cv_func_getrandom" >&6; }
 
-if test "x$ac_cv_func_getrandom" = xyes; then :
+if test "x$ac_cv_func_getrandom" = xyes
+then :
 
 
-$as_echo "#define HAVE_GETRANDOM 1" >>confdefs.h
+printf "%s\n" "#define HAVE_GETRANDOM 1" >>confdefs.h
 
 
 fi
@@ -25010,11 +27139,12 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing shm_open" >&5
-$as_echo_n "checking for library containing shm_open... " >&6; }
-if ${ac_cv_search_shm_open+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing shm_open" >&5
+printf %s "checking for library containing shm_open... " >&6; }
+if test ${ac_cv_search_shm_open+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -25022,51 +27152,54 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 char shm_open ();
 int
-main ()
+main (void)
 {
 return shm_open ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' rt; do
+for ac_lib in '' rt
+do
   if test -z "$ac_lib"; then
     ac_res="none required"
   else
     ac_res=-l$ac_lib
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
+  if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_search_shm_open=$ac_res
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext
-  if ${ac_cv_search_shm_open+:} false; then :
+  if test ${ac_cv_search_shm_open+y}
+then :
   break
 fi
 done
-if ${ac_cv_search_shm_open+:} false; then :
+if test ${ac_cv_search_shm_open+y}
+then :
 
-else
+else $as_nop
   ac_cv_search_shm_open=no
 fi
 rm conftest.$ac_ext
 LIBS=$ac_func_search_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_shm_open" >&5
-$as_echo "$ac_cv_search_shm_open" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_shm_open" >&5
+printf "%s\n" "$ac_cv_search_shm_open" >&6; }
 ac_res=$ac_cv_search_shm_open
-if test "$ac_res" != no; then :
+if test "$ac_res" != no
+then :
   test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
 
 fi
 
-  if test "x$ac_cv_search_shm_open" = x-lrt; then :
+  if test "x$ac_cv_search_shm_open" = x-lrt
+then :
   POSIXSHMEM_LIBS="-lrt"
 fi
 
@@ -25079,20 +27212,22 @@ fi
   #  endif
   #endif
   "
+
   for ac_func in shm_open shm_unlink
 do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+  as_ac_var=`printf "%s\n" "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+if eval test \"x\$"$as_ac_var"\" = x"yes"
+then :
   cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+#define `printf "%s\n" "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
  have_posix_shmem=yes
-else
+else $as_nop
   have_posix_shmem=no
 fi
-done
 
+done
   ac_includes_default=$save_ac_includes_default
 
 CFLAGS=$save_CFLAGS
@@ -25107,7 +27242,8 @@ LIBS=$save_LIBS
     found=false
 
 # Check whether --with-openssl was given.
-if test "${with_openssl+set}" = set; then :
+if test ${with_openssl+y}
+then :
   withval=$with_openssl;
             case "$withval" in
             "" | y | ye | yes | n | no)
@@ -25117,18 +27253,19 @@ if test "${with_openssl+set}" = set; then :
               ;;
             esac
 
-else
+else $as_nop
 
             # if pkg-config is installed and openssl has installed a .pc file,
             # then use that information and don't search ssldirs
             if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
 set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_PKG_CONFIG+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_PKG_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$PKG_CONFIG"; then
   ac_cv_prog_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test.
 else
@@ -25136,11 +27273,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_PKG_CONFIG="${ac_tool_prefix}pkg-config"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -25151,11 +27292,11 @@ fi
 fi
 PKG_CONFIG=$ac_cv_prog_PKG_CONFIG
 if test -n "$PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
-$as_echo "$PKG_CONFIG" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+printf "%s\n" "$PKG_CONFIG" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
 
@@ -25164,11 +27305,12 @@ if test -z "$ac_cv_prog_PKG_CONFIG"; then
   ac_ct_PKG_CONFIG=$PKG_CONFIG
   # Extract the first word of "pkg-config", so it can be a program name with args.
 set dummy pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_PKG_CONFIG+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_PKG_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
   if test -n "$ac_ct_PKG_CONFIG"; then
   ac_cv_prog_ac_ct_PKG_CONFIG="$ac_ct_PKG_CONFIG" # Let the user override the test.
 else
@@ -25176,11 +27318,15 @@ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_PKG_CONFIG="pkg-config"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -25191,11 +27337,11 @@ fi
 fi
 ac_ct_PKG_CONFIG=$ac_cv_prog_ac_ct_PKG_CONFIG
 if test -n "$ac_ct_PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_PKG_CONFIG" >&5
-$as_echo "$ac_ct_PKG_CONFIG" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_PKG_CONFIG" >&5
+printf "%s\n" "$ac_ct_PKG_CONFIG" >&6; }
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 fi
 
   if test "x$ac_ct_PKG_CONFIG" = x; then
@@ -25203,8 +27349,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     PKG_CONFIG=$ac_ct_PKG_CONFIG
@@ -25238,19 +27384,19 @@ fi
     if ! $found; then
         OPENSSL_INCLUDES=
         for ssldir in $ssldirs; do
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for openssl/ssl.h in $ssldir" >&5
-$as_echo_n "checking for openssl/ssl.h in $ssldir... " >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for include/openssl/ssl.h in $ssldir" >&5
+printf %s "checking for include/openssl/ssl.h in $ssldir... " >&6; }
             if test -f "$ssldir/include/openssl/ssl.h"; then
                 OPENSSL_INCLUDES="-I$ssldir/include"
                 OPENSSL_LDFLAGS="-L$ssldir/lib"
                 OPENSSL_LIBS="-lssl -lcrypto"
                 found=true
-                { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
                 break
             else
-                { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
             fi
         done
 
@@ -25261,8 +27407,8 @@ $as_echo "no" >&6; }
     # try the preprocessor and linker with our new flags,
     # being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether compiling and linking against OpenSSL works" >&5
-$as_echo_n "checking whether compiling and linking against OpenSSL works... " >&6; }
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiling and linking against OpenSSL works" >&5
+printf %s "checking whether compiling and linking against OpenSSL works... " >&6; }
     echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \
         "OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&5
 
@@ -25276,27 +27422,28 @@ $as_echo_n "checking whether compiling and linking against OpenSSL works... " >&
 /* end confdefs.h.  */
 #include <openssl/ssl.h>
 int
-main ()
+main (void)
 {
 SSL_new(NULL)
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
 
-            { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
             have_openssl=yes
 
-else
+else $as_nop
 
-            { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
             have_openssl=no
 
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
     CPPFLAGS="$save_CPPFLAGS"
     LDFLAGS="$save_LDFLAGS"
@@ -25308,23 +27455,25 @@ rm -f core conftest.err conftest.$ac_objext \
 
 
 # rpath to libssl and libcrypto
-if test "x$GNULD" = xyes; then :
+if test "x$GNULD" = xyes
+then :
 
   rpath_arg="-Wl,--enable-new-dtags,-rpath="
 
-else
+else $as_nop
 
   rpath_arg="-Wl,-rpath="
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-openssl-rpath" >&5
-$as_echo_n "checking for --with-openssl-rpath... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-openssl-rpath" >&5
+printf %s "checking for --with-openssl-rpath... " >&6; }
 
 # Check whether --with-openssl-rpath was given.
-if test "${with_openssl_rpath+set}" = set; then :
+if test ${with_openssl_rpath+y}
+then :
   withval=$with_openssl_rpath;
-else
+else $as_nop
   with_openssl_rpath=no
 
 fi
@@ -25346,28 +27495,30 @@ esac
   no) :
     OPENSSL_RPATH= ;; #(
   *) :
-    if test -d "$with_openssl_rpath"; then :
+    if test -d "$with_openssl_rpath"
+then :
 
           OPENSSL_RPATH="$with_openssl_rpath"
           OPENSSL_LDFLAGS_RPATH="${rpath_arg}$with_openssl_rpath"
 
-else
+else $as_nop
   as_fn_error $? "--with-openssl-rpath \"$with_openssl_rpath\" is not a directory" "$LINENO" 5
 fi
 
  ;;
 esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $OPENSSL_RPATH" >&5
-$as_echo "$OPENSSL_RPATH" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OPENSSL_RPATH" >&5
+printf "%s\n" "$OPENSSL_RPATH" >&6; }
 
 # This static linking is NOT OFFICIALLY SUPPORTED and not advertised.
 # Requires static OpenSSL build with position-independent code. Some features
 # like DSO engines or external OSSL providers don't work. Only tested with GCC
 # and clang on X86_64.
-if test "x$PY_UNSUPPORTED_OPENSSL_BUILD" = xstatic; then :
+if test "x$PY_UNSUPPORTED_OPENSSL_BUILD" = xstatic
+then :
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for unsupported static openssl build" >&5
-$as_echo_n "checking for unsupported static openssl build... " >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for unsupported static openssl build" >&5
+printf %s "checking for unsupported static openssl build... " >&6; }
   new_OPENSSL_LIBS=
   for arg in $OPENSSL_LIBS; do
     case $arg in #(
@@ -25382,8 +27533,8 @@ $as_echo_n "checking for unsupported static openssl build... " >&6; }
 esac
   done
     OPENSSL_LIBS="$new_OPENSSL_LIBS $ZLIB_LIBS"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OPENSSL_LIBS" >&5
-$as_echo "$OPENSSL_LIBS" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OPENSSL_LIBS" >&5
+printf "%s\n" "$OPENSSL_LIBS" >&6; }
 
 fi
 
@@ -25409,11 +27560,12 @@ save_LIBS=$LIBS
   CFLAGS="$CFLAGS $OPENSSL_INCLUDES"
   LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH"
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether OpenSSL provides required ssl module APIs" >&5
-$as_echo_n "checking whether OpenSSL provides required ssl module APIs... " >&6; }
-if ${ac_cv_working_openssl_ssl+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether OpenSSL provides required ssl module APIs" >&5
+printf %s "checking whether OpenSSL provides required ssl module APIs... " >&6; }
+if test ${ac_cv_working_openssl_ssl+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -25426,7 +27578,7 @@ else
       static void keylog_cb(const SSL *ssl, const char *line) {}
 
 int
-main ()
+main (void)
 {
 
       SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
@@ -25441,17 +27593,18 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_working_openssl_ssl=yes
-else
+else $as_nop
   ac_cv_working_openssl_ssl=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_openssl_ssl" >&5
-$as_echo "$ac_cv_working_openssl_ssl" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_openssl_ssl" >&5
+printf "%s\n" "$ac_cv_working_openssl_ssl" >&6; }
 
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
@@ -25470,11 +27623,12 @@ save_LIBS=$LIBS
   CFLAGS="$CFLAGS $OPENSSL_INCLUDES"
   LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH"
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether OpenSSL provides required hashlib module APIs" >&5
-$as_echo_n "checking whether OpenSSL provides required hashlib module APIs... " >&6; }
-if ${ac_cv_working_openssl_hashlib+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether OpenSSL provides required hashlib module APIs" >&5
+printf %s "checking whether OpenSSL provides required hashlib module APIs... " >&6; }
+if test ${ac_cv_working_openssl_hashlib+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
 
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -25486,7 +27640,7 @@ else
       #endif
 
 int
-main ()
+main (void)
 {
 
       OBJ_nid2sn(NID_md5);
@@ -25499,17 +27653,18 @@ main ()
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"
+then :
   ac_cv_working_openssl_hashlib=yes
-else
+else $as_nop
   ac_cv_working_openssl_hashlib=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
     conftest$ac_exeext conftest.$ac_ext
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_openssl_hashlib" >&5
-$as_echo "$ac_cv_working_openssl_hashlib" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_openssl_hashlib" >&5
+printf "%s\n" "$ac_cv_working_openssl_hashlib" >&6; }
 
 CFLAGS=$save_CFLAGS
 CPPFLAGS=$save_CPPFLAGS
@@ -25522,38 +27677,37 @@ LIBS=$save_LIBS
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-ssl-default-suites" >&5
-$as_echo_n "checking for --with-ssl-default-suites... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-ssl-default-suites" >&5
+printf %s "checking for --with-ssl-default-suites... " >&6; }
 
 # Check whether --with-ssl-default-suites was given.
-if test "${with_ssl_default_suites+set}" = set; then :
+if test ${with_ssl_default_suites+y}
+then :
   withval=$with_ssl_default_suites;
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
-$as_echo "$withval" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
+printf "%s\n" "$withval" >&6; }
 case "$withval" in
     python)
-        $as_echo "#define PY_SSL_DEFAULT_CIPHERS 1" >>confdefs.h
+        printf "%s\n" "#define PY_SSL_DEFAULT_CIPHERS 1" >>confdefs.h
 
         ;;
     openssl)
-        $as_echo "#define PY_SSL_DEFAULT_CIPHERS 2" >>confdefs.h
+        printf "%s\n" "#define PY_SSL_DEFAULT_CIPHERS 2" >>confdefs.h
 
         ;;
     *)
-        $as_echo "#define PY_SSL_DEFAULT_CIPHERS 0" >>confdefs.h
+        printf "%s\n" "#define PY_SSL_DEFAULT_CIPHERS 0" >>confdefs.h
 
-        cat >>confdefs.h <<_ACEOF
-#define PY_SSL_DEFAULT_CIPHER_STRING "$withval"
-_ACEOF
+        printf "%s\n" "#define PY_SSL_DEFAULT_CIPHER_STRING \"$withval\"" >>confdefs.h
 
         ;;
 esac
 
-else
+else $as_nop
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: python" >&5
-$as_echo "python" >&6; }
-$as_echo "#define PY_SSL_DEFAULT_CIPHERS 1" >>confdefs.h
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: python" >&5
+printf "%s\n" "python" >&6; }
+printf "%s\n" "#define PY_SSL_DEFAULT_CIPHERS 1" >>confdefs.h
 
 
 fi
@@ -25562,13 +27716,14 @@ fi
 # builtin hash modules
 default_hashlib_hashes="md5,sha1,sha2,sha3,blake2"
 
-$as_echo "#define PY_BUILTIN_HASHLIB_HASHES /**/" >>confdefs.h
+printf "%s\n" "#define PY_BUILTIN_HASHLIB_HASHES /**/" >>confdefs.h
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-builtin-hashlib-hashes" >&5
-$as_echo_n "checking for --with-builtin-hashlib-hashes... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-builtin-hashlib-hashes" >&5
+printf %s "checking for --with-builtin-hashlib-hashes... " >&6; }
 
 # Check whether --with-builtin-hashlib-hashes was given.
-if test "${with_builtin_hashlib_hashes+set}" = set; then :
+if test ${with_builtin_hashlib_hashes+y}
+then :
   withval=$with_builtin_hashlib_hashes;
   case $with_builtin_hashlib_hashes in #(
   yes) :
@@ -25580,16 +27735,14 @@ if test "${with_builtin_hashlib_hashes+set}" = set; then :
      ;;
 esac
 
-else
+else $as_nop
   with_builtin_hashlib_hashes=$default_hashlib_hashes
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_builtin_hashlib_hashes" >&5
-$as_echo "$with_builtin_hashlib_hashes" >&6; }
-cat >>confdefs.h <<_ACEOF
-#define PY_BUILTIN_HASHLIB_HASHES "$with_builtin_hashlib_hashes"
-_ACEOF
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_builtin_hashlib_hashes" >&5
+printf "%s\n" "$with_builtin_hashlib_hashes" >&6; }
+printf "%s\n" "#define PY_BUILTIN_HASHLIB_HASHES \"$with_builtin_hashlib_hashes\"" >>confdefs.h
 
 
 as_save_IFS=$IFS
@@ -25613,21 +27766,22 @@ esac
 done
 IFS=$as_save_IFS
 
-if test "x$with_builtin_blake2" = xyes; then :
+if test "x$with_builtin_blake2" = xyes
+then :
 
 
 pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBB2" >&5
-$as_echo_n "checking for LIBB2... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libb2" >&5
+printf %s "checking for libb2... " >&6; }
 
 if test -n "$LIBB2_CFLAGS"; then
     pkg_cv_LIBB2_CFLAGS="$LIBB2_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libb2\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libb2\""; } >&5
   ($PKG_CONFIG --exists --print-errors "libb2") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBB2_CFLAGS=`$PKG_CONFIG --cflags "libb2" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -25641,10 +27795,10 @@ if test -n "$LIBB2_LIBS"; then
     pkg_cv_LIBB2_LIBS="$LIBB2_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libb2\""; } >&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libb2\""; } >&5
   ($PKG_CONFIG --exists --print-errors "libb2") 2>&5
   ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
   pkg_cv_LIBB2_LIBS=`$PKG_CONFIG --libs "libb2" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
@@ -25658,8 +27812,8 @@ fi
 
 
 if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
         _pkg_short_errors_supported=yes
@@ -25676,53 +27830,145 @@ fi
 
 	have_libb2=no
 elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 	have_libb2=no
 else
 	LIBB2_CFLAGS=$pkg_cv_LIBB2_CFLAGS
 	LIBB2_LIBS=$pkg_cv_LIBB2_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
     have_libb2=yes
 
-$as_echo "#define HAVE_LIBB2 1" >>confdefs.h
+printf "%s\n" "#define HAVE_LIBB2 1" >>confdefs.h
+
+
+fi
+
+fi
+
+# Check whether to disable test modules. Once set, setup.py will not build
+# test extension modules and "make install" will not install test suites.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --disable-test-modules" >&5
+printf %s "checking for --disable-test-modules... " >&6; }
+# Check whether --enable-test-modules was given.
+if test ${enable_test_modules+y}
+then :
+  enableval=$enable_test_modules;
+  if test "x$enable_test_modules" = xyes
+then :
+  TEST_MODULES=yes
+else $as_nop
+  TEST_MODULES=no
+fi
+
+else $as_nop
 
+  case $ac_sys_system/$ac_sys_emscripten_target in #(
+  Emscripten/browser*) :
+    TEST_MODULES=no ;; #(
+  *) :
+    TEST_MODULES=yes
+   ;;
+esac
 
 fi
 
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $TEST_MODULES" >&5
+printf "%s\n" "$TEST_MODULES" >&6; }
+
+
+# gh-109054: Check if -latomic is needed to get <pyatomic.h> atomic functions.
+# On Linux aarch64, GCC may require programs and libraries to be linked
+# explicitly to libatomic. Call _Py_atomic_or_uint64() which may require
+# libatomic __atomic_fetch_or_8(), or not, depending on the C compiler and the
+# compiler flags.
+#
+# gh-112779: On RISC-V, GCC 12 and earlier require libatomic support for 1-byte
+# and 2-byte operations, but not for 8-byte operations.
+#
+# Avoid #include <Python.h> or #include <pyport.h>. The <Python.h> header
+# requires <pyconfig.h> header which is only written below by AC_OUTPUT below.
+# If the check is done after AC_OUTPUT, modifying LIBS has no effect
+# anymore.  <pyport.h> cannot be included alone, it's designed to be included
+# by <Python.h>: it expects other includes and macros to be defined.
+save_CPPFLAGS=$CPPFLAGS
+CPPFLAGS="${BASECPPFLAGS} -I. -I${srcdir}/Include ${CPPFLAGS}"
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether libatomic is needed by <pyatomic.h>" >&5
+printf %s "checking whether libatomic is needed by <pyatomic.h>... " >&6; }
+if test ${ac_cv_libatomic_needed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+    ac_cv_libatomic_needed=no
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+// pyatomic.h needs uint64_t and Py_ssize_t types
+#include <stdint.h>  // int64_t, intptr_t
+#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h> // ssize_t
+#endif
+// Code adapted from Include/pyport.h
+#if HAVE_SSIZE_T
+typedef ssize_t Py_ssize_t;
+#elif SIZEOF_VOID_P == SIZEOF_SIZE_T
+typedef intptr_t Py_ssize_t;
+#else
+#  error "unable to define Py_ssize_t"
+#endif
+
+#include "pyatomic.h"
+
+int main()
+{
+    uint64_t value;
+    _Py_atomic_store_uint64(&value, 2);
+    if (_Py_atomic_or_uint64(&value, 8) != 2) {
+        return 1; // error
+    }
+    if (_Py_atomic_load_uint64(&value) != 10) {
+        return 1; // error
+    }
+    uint8_t byte = 0xb8;
+    if (_Py_atomic_or_uint8(&byte, 0x2d) != 0xb8) {
+        return 1; // error
+    }
+    if (_Py_atomic_load_uint8(&byte) != 0xbd) {
+        return 1; // error
+    }
+    return 0; // all good
+}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_libatomic_needed=no
+else $as_nop
+    ac_cv_libatomic_needed=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
 fi
 
-# Check whether to disable test modules. Once set, setup.py will not build
-# test extension modules and "make install" will not install test suites.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --disable-test-modules" >&5
-$as_echo_n "checking for --disable-test-modules... " >&6; }
-# Check whether --enable-test-modules was given.
-if test "${enable_test_modules+set}" = set; then :
-  enableval=$enable_test_modules;
-  if test "x$enable_test_modules" = xyes; then :
-  TEST_MODULES=yes
-else
-  TEST_MODULES=no
 fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_libatomic_needed" >&5
+printf "%s\n" "$ac_cv_libatomic_needed" >&6; }
 
-else
-
-  case $ac_sys_system/$ac_sys_emscripten_target in #(
-  Emscripten/browser*) :
-    TEST_MODULES=no ;; #(
-  *) :
-    TEST_MODULES=yes
-   ;;
-esac
-
+if test "x$ac_cv_libatomic_needed" = xyes
+then :
+  LIBS="${LIBS} -latomic"
+           LIBATOMIC=${LIBATOMIC-"-latomic"}
 fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $TEST_MODULES" >&5
-$as_echo "$TEST_MODULES" >&6; }
+CPPFLAGS=$save_CPPFLAGS
 
 
+# stdlib
 
 
 # stdlib not available
@@ -25731,39 +27977,30 @@ case $ac_sys_system in #(
 
 
     py_cv_module__scproxy=n/a
-    py_cv_module_spwd=n/a
  ;; #(
   VxWorks*) :
 
 
     py_cv_module__scproxy=n/a
-    py_cv_module__crypt=n/a
     py_cv_module_termios=n/a
     py_cv_module_grp=n/a
  ;; #(
-  Darwin) :
-
-
-    py_cv_module_ossaudiodev=n/a
-    py_cv_module_spwd=n/a
- ;; #(
+    Darwin) :
+     ;; #(
   CYGWIN*) :
 
 
     py_cv_module__scproxy=n/a
-    py_cv_module_nis=n/a
  ;; #(
   QNX*) :
 
 
     py_cv_module__scproxy=n/a
-    py_cv_module_nis=n/a
  ;; #(
   FreeBSD*) :
 
 
     py_cv_module__scproxy=n/a
-    py_cv_module_spwd=n/a
  ;; #(
   Emscripten|WASI) :
 
@@ -25781,11 +28018,8 @@ case $ac_sys_system in #(
     py_cv_module__xxsubinterpreters=n/a
     py_cv_module__xxinterpchannels=n/a
     py_cv_module_grp=n/a
-    py_cv_module_nis=n/a
-    py_cv_module_ossaudiodev=n/a
     py_cv_module_pwd=n/a
     py_cv_module_resource=n/a
-    py_cv_module_spwd=n/a
     py_cv_module_syslog=n/a
     py_cv_module_=n/a
 
@@ -25844,7 +28078,8 @@ MODULE_BLOCK=
 
 
 
-        if test "$py_cv_module__io" != "n/a"; then :
+        if test "$py_cv_module__io" != "n/a"
+then :
   py_cv_module__io=yes
 fi
    if test "$py_cv_module__io" = yes; then
@@ -25856,7 +28091,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__IO_STATE=$py_cv_module__io$as_nl"
-  if test "x$py_cv_module__io" = xyes; then :
+  if test "x$py_cv_module__io" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__IO_CFLAGS=-I\$(srcdir)/Modules/_io$as_nl"
 
@@ -25864,7 +28100,8 @@ fi
 fi
 
 
-        if test "$py_cv_module_time" != "n/a"; then :
+        if test "$py_cv_module_time" != "n/a"
+then :
   py_cv_module_time=yes
 fi
    if test "$py_cv_module_time" = yes; then
@@ -25876,7 +28113,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_TIME_STATE=$py_cv_module_time$as_nl"
-  if test "x$py_cv_module_time" = xyes; then :
+  if test "x$py_cv_module_time" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE_TIME_LDFLAGS=$TIMEMODULE_LIB$as_nl"
@@ -25885,7 +28123,8 @@ fi
 
 
 
-        if test "$py_cv_module_array" != "n/a"; then :
+        if test "$py_cv_module_array" != "n/a"
+then :
   py_cv_module_array=yes
 fi
    if test "$py_cv_module_array" = yes; then
@@ -25897,7 +28136,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_ARRAY_STATE=$py_cv_module_array$as_nl"
-  if test "x$py_cv_module_array" = xyes; then :
+  if test "x$py_cv_module_array" = xyes
+then :
 
 
 
@@ -25905,7 +28145,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__asyncio" != "n/a"; then :
+        if test "$py_cv_module__asyncio" != "n/a"
+then :
   py_cv_module__asyncio=yes
 fi
    if test "$py_cv_module__asyncio" = yes; then
@@ -25917,7 +28158,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__ASYNCIO_STATE=$py_cv_module__asyncio$as_nl"
-  if test "x$py_cv_module__asyncio" = xyes; then :
+  if test "x$py_cv_module__asyncio" = xyes
+then :
 
 
 
@@ -25925,7 +28167,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__bisect" != "n/a"; then :
+        if test "$py_cv_module__bisect" != "n/a"
+then :
   py_cv_module__bisect=yes
 fi
    if test "$py_cv_module__bisect" = yes; then
@@ -25937,7 +28180,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__BISECT_STATE=$py_cv_module__bisect$as_nl"
-  if test "x$py_cv_module__bisect" = xyes; then :
+  if test "x$py_cv_module__bisect" = xyes
+then :
 
 
 
@@ -25945,7 +28189,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__contextvars" != "n/a"; then :
+        if test "$py_cv_module__contextvars" != "n/a"
+then :
   py_cv_module__contextvars=yes
 fi
    if test "$py_cv_module__contextvars" = yes; then
@@ -25957,7 +28202,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CONTEXTVARS_STATE=$py_cv_module__contextvars$as_nl"
-  if test "x$py_cv_module__contextvars" = xyes; then :
+  if test "x$py_cv_module__contextvars" = xyes
+then :
 
 
 
@@ -25965,7 +28211,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__csv" != "n/a"; then :
+        if test "$py_cv_module__csv" != "n/a"
+then :
   py_cv_module__csv=yes
 fi
    if test "$py_cv_module__csv" = yes; then
@@ -25977,7 +28224,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CSV_STATE=$py_cv_module__csv$as_nl"
-  if test "x$py_cv_module__csv" = xyes; then :
+  if test "x$py_cv_module__csv" = xyes
+then :
 
 
 
@@ -25985,7 +28233,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__heapq" != "n/a"; then :
+        if test "$py_cv_module__heapq" != "n/a"
+then :
   py_cv_module__heapq=yes
 fi
    if test "$py_cv_module__heapq" = yes; then
@@ -25997,7 +28246,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__HEAPQ_STATE=$py_cv_module__heapq$as_nl"
-  if test "x$py_cv_module__heapq" = xyes; then :
+  if test "x$py_cv_module__heapq" = xyes
+then :
 
 
 
@@ -26005,7 +28255,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__json" != "n/a"; then :
+        if test "$py_cv_module__json" != "n/a"
+then :
   py_cv_module__json=yes
 fi
    if test "$py_cv_module__json" = yes; then
@@ -26017,7 +28268,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__JSON_STATE=$py_cv_module__json$as_nl"
-  if test "x$py_cv_module__json" = xyes; then :
+  if test "x$py_cv_module__json" = xyes
+then :
 
 
 
@@ -26025,7 +28277,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__lsprof" != "n/a"; then :
+        if test "$py_cv_module__lsprof" != "n/a"
+then :
   py_cv_module__lsprof=yes
 fi
    if test "$py_cv_module__lsprof" = yes; then
@@ -26037,7 +28290,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__LSPROF_STATE=$py_cv_module__lsprof$as_nl"
-  if test "x$py_cv_module__lsprof" = xyes; then :
+  if test "x$py_cv_module__lsprof" = xyes
+then :
 
 
 
@@ -26045,7 +28299,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__opcode" != "n/a"; then :
+        if test "$py_cv_module__opcode" != "n/a"
+then :
   py_cv_module__opcode=yes
 fi
    if test "$py_cv_module__opcode" = yes; then
@@ -26057,7 +28312,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__OPCODE_STATE=$py_cv_module__opcode$as_nl"
-  if test "x$py_cv_module__opcode" = xyes; then :
+  if test "x$py_cv_module__opcode" = xyes
+then :
 
 
 
@@ -26065,7 +28321,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__pickle" != "n/a"; then :
+        if test "$py_cv_module__pickle" != "n/a"
+then :
   py_cv_module__pickle=yes
 fi
    if test "$py_cv_module__pickle" = yes; then
@@ -26077,7 +28334,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__PICKLE_STATE=$py_cv_module__pickle$as_nl"
-  if test "x$py_cv_module__pickle" = xyes; then :
+  if test "x$py_cv_module__pickle" = xyes
+then :
 
 
 
@@ -26085,7 +28343,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__posixsubprocess" != "n/a"; then :
+        if test "$py_cv_module__posixsubprocess" != "n/a"
+then :
   py_cv_module__posixsubprocess=yes
 fi
    if test "$py_cv_module__posixsubprocess" = yes; then
@@ -26097,7 +28356,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__POSIXSUBPROCESS_STATE=$py_cv_module__posixsubprocess$as_nl"
-  if test "x$py_cv_module__posixsubprocess" = xyes; then :
+  if test "x$py_cv_module__posixsubprocess" = xyes
+then :
 
 
 
@@ -26105,7 +28365,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__queue" != "n/a"; then :
+        if test "$py_cv_module__queue" != "n/a"
+then :
   py_cv_module__queue=yes
 fi
    if test "$py_cv_module__queue" = yes; then
@@ -26117,7 +28378,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__QUEUE_STATE=$py_cv_module__queue$as_nl"
-  if test "x$py_cv_module__queue" = xyes; then :
+  if test "x$py_cv_module__queue" = xyes
+then :
 
 
 
@@ -26125,7 +28387,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__random" != "n/a"; then :
+        if test "$py_cv_module__random" != "n/a"
+then :
   py_cv_module__random=yes
 fi
    if test "$py_cv_module__random" = yes; then
@@ -26137,7 +28400,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__RANDOM_STATE=$py_cv_module__random$as_nl"
-  if test "x$py_cv_module__random" = xyes; then :
+  if test "x$py_cv_module__random" = xyes
+then :
 
 
 
@@ -26145,7 +28409,8 @@ fi
 fi
 
 
-        if test "$py_cv_module_select" != "n/a"; then :
+        if test "$py_cv_module_select" != "n/a"
+then :
   py_cv_module_select=yes
 fi
    if test "$py_cv_module_select" = yes; then
@@ -26157,7 +28422,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_SELECT_STATE=$py_cv_module_select$as_nl"
-  if test "x$py_cv_module_select" = xyes; then :
+  if test "x$py_cv_module_select" = xyes
+then :
 
 
 
@@ -26165,7 +28431,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__struct" != "n/a"; then :
+        if test "$py_cv_module__struct" != "n/a"
+then :
   py_cv_module__struct=yes
 fi
    if test "$py_cv_module__struct" = yes; then
@@ -26177,7 +28444,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__STRUCT_STATE=$py_cv_module__struct$as_nl"
-  if test "x$py_cv_module__struct" = xyes; then :
+  if test "x$py_cv_module__struct" = xyes
+then :
 
 
 
@@ -26185,7 +28453,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__typing" != "n/a"; then :
+        if test "$py_cv_module__typing" != "n/a"
+then :
   py_cv_module__typing=yes
 fi
    if test "$py_cv_module__typing" = yes; then
@@ -26197,7 +28466,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__TYPING_STATE=$py_cv_module__typing$as_nl"
-  if test "x$py_cv_module__typing" = xyes; then :
+  if test "x$py_cv_module__typing" = xyes
+then :
 
 
 
@@ -26205,7 +28475,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__xxsubinterpreters" != "n/a"; then :
+        if test "$py_cv_module__xxsubinterpreters" != "n/a"
+then :
   py_cv_module__xxsubinterpreters=yes
 fi
    if test "$py_cv_module__xxsubinterpreters" = yes; then
@@ -26217,7 +28488,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__XXSUBINTERPRETERS_STATE=$py_cv_module__xxsubinterpreters$as_nl"
-  if test "x$py_cv_module__xxsubinterpreters" = xyes; then :
+  if test "x$py_cv_module__xxsubinterpreters" = xyes
+then :
 
 
 
@@ -26225,7 +28497,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__xxinterpchannels" != "n/a"; then :
+        if test "$py_cv_module__xxinterpchannels" != "n/a"
+then :
   py_cv_module__xxinterpchannels=yes
 fi
    if test "$py_cv_module__xxinterpchannels" = yes; then
@@ -26237,7 +28510,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__XXINTERPCHANNELS_STATE=$py_cv_module__xxinterpchannels$as_nl"
-  if test "x$py_cv_module__xxinterpchannels" = xyes; then :
+  if test "x$py_cv_module__xxinterpchannels" = xyes
+then :
 
 
 
@@ -26245,7 +28519,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__zoneinfo" != "n/a"; then :
+        if test "$py_cv_module__zoneinfo" != "n/a"
+then :
   py_cv_module__zoneinfo=yes
 fi
    if test "$py_cv_module__zoneinfo" = yes; then
@@ -26257,7 +28532,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__ZONEINFO_STATE=$py_cv_module__zoneinfo$as_nl"
-  if test "x$py_cv_module__zoneinfo" = xyes; then :
+  if test "x$py_cv_module__zoneinfo" = xyes
+then :
 
 
 
@@ -26266,23 +28542,27 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _multiprocessing" >&5
-$as_echo_n "checking for stdlib extension module _multiprocessing... " >&6; }
-        if test "$py_cv_module__multiprocessing" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _multiprocessing" >&5
+printf %s "checking for stdlib extension module _multiprocessing... " >&6; }
+        if test "$py_cv_module__multiprocessing" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_func_sem_unlink" = "yes"; then :
+    if true
+then :
+  if test "$ac_cv_func_sem_unlink" = "yes"
+then :
   py_cv_module__multiprocessing=yes
-else
+else $as_nop
   py_cv_module__multiprocessing=missing
 fi
-else
+else $as_nop
   py_cv_module__multiprocessing=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__MULTIPROCESSING_STATE=$py_cv_module__multiprocessing$as_nl"
-  if test "x$py_cv_module__multiprocessing" = xyes; then :
+  if test "x$py_cv_module__multiprocessing" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__MULTIPROCESSING_CFLAGS=-I\$(srcdir)/Modules/_multiprocessing$as_nl"
 
@@ -26296,27 +28576,31 @@ else
   MODULE__MULTIPROCESSING_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__multiprocessing" >&5
-$as_echo "$py_cv_module__multiprocessing" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__multiprocessing" >&5
+printf "%s\n" "$py_cv_module__multiprocessing" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _posixshmem" >&5
-$as_echo_n "checking for stdlib extension module _posixshmem... " >&6; }
-        if test "$py_cv_module__posixshmem" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _posixshmem" >&5
+printf %s "checking for stdlib extension module _posixshmem... " >&6; }
+        if test "$py_cv_module__posixshmem" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_posix_shmem" = "yes"; then :
+    if true
+then :
+  if test "$have_posix_shmem" = "yes"
+then :
   py_cv_module__posixshmem=yes
-else
+else $as_nop
   py_cv_module__posixshmem=missing
 fi
-else
+else $as_nop
   py_cv_module__posixshmem=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__POSIXSHMEM_STATE=$py_cv_module__posixshmem$as_nl"
-  if test "x$py_cv_module__posixshmem" = xyes; then :
+  if test "x$py_cv_module__posixshmem" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__POSIXSHMEM_CFLAGS=$POSIXSHMEM_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__POSIXSHMEM_LDFLAGS=$POSIXSHMEM_LIBS$as_nl"
@@ -26330,32 +28614,13 @@ else
   MODULE__POSIXSHMEM_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__posixshmem" >&5
-$as_echo "$py_cv_module__posixshmem" >&6; }
-
-
-
-        if test "$py_cv_module_audioop" != "n/a"; then :
-  py_cv_module_audioop=yes
-fi
-   if test "$py_cv_module_audioop" = yes; then
-  MODULE_AUDIOOP_TRUE=
-  MODULE_AUDIOOP_FALSE='#'
-else
-  MODULE_AUDIOOP_TRUE='#'
-  MODULE_AUDIOOP_FALSE=
-fi
-
-  as_fn_append MODULE_BLOCK "MODULE_AUDIOOP_STATE=$py_cv_module_audioop$as_nl"
-  if test "x$py_cv_module_audioop" = xyes; then :
-
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__posixshmem" >&5
+printf "%s\n" "$py_cv_module__posixshmem" >&6; }
 
-    as_fn_append MODULE_BLOCK "MODULE_AUDIOOP_LDFLAGS=$LIBM$as_nl"
-
-fi
 
 
-        if test "$py_cv_module__statistics" != "n/a"; then :
+        if test "$py_cv_module__statistics" != "n/a"
+then :
   py_cv_module__statistics=yes
 fi
    if test "$py_cv_module__statistics" = yes; then
@@ -26367,7 +28632,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__STATISTICS_STATE=$py_cv_module__statistics$as_nl"
-  if test "x$py_cv_module__statistics" = xyes; then :
+  if test "x$py_cv_module__statistics" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE__STATISTICS_LDFLAGS=$LIBM$as_nl"
@@ -26375,7 +28641,8 @@ fi
 fi
 
 
-        if test "$py_cv_module_cmath" != "n/a"; then :
+        if test "$py_cv_module_cmath" != "n/a"
+then :
   py_cv_module_cmath=yes
 fi
    if test "$py_cv_module_cmath" = yes; then
@@ -26387,7 +28654,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_CMATH_STATE=$py_cv_module_cmath$as_nl"
-  if test "x$py_cv_module_cmath" = xyes; then :
+  if test "x$py_cv_module_cmath" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE_CMATH_LDFLAGS=$LIBM$as_nl"
@@ -26395,7 +28663,8 @@ fi
 fi
 
 
-        if test "$py_cv_module_math" != "n/a"; then :
+        if test "$py_cv_module_math" != "n/a"
+then :
   py_cv_module_math=yes
 fi
    if test "$py_cv_module_math" = yes; then
@@ -26407,7 +28676,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_MATH_STATE=$py_cv_module_math$as_nl"
-  if test "x$py_cv_module_math" = xyes; then :
+  if test "x$py_cv_module_math" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE_MATH_LDFLAGS=$LIBM$as_nl"
@@ -26416,7 +28686,8 @@ fi
 
 
 
-        if test "$py_cv_module__datetime" != "n/a"; then :
+        if test "$py_cv_module__datetime" != "n/a"
+then :
   py_cv_module__datetime=yes
 fi
    if test "$py_cv_module__datetime" = yes; then
@@ -26428,7 +28699,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__DATETIME_STATE=$py_cv_module__datetime$as_nl"
-  if test "x$py_cv_module__datetime" = xyes; then :
+  if test "x$py_cv_module__datetime" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE__DATETIME_LDFLAGS=$TIMEMODULE_LIB $LIBM$as_nl"
@@ -26437,23 +28709,27 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module fcntl" >&5
-$as_echo_n "checking for stdlib extension module fcntl... " >&6; }
-        if test "$py_cv_module_fcntl" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module fcntl" >&5
+printf %s "checking for stdlib extension module fcntl... " >&6; }
+        if test "$py_cv_module_fcntl" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_header_sys_ioctl_h" = "yes" -a "$ac_cv_header_fcntl_h" = "yes"; then :
+    if true
+then :
+  if test "$ac_cv_header_sys_ioctl_h" = "yes" -a "$ac_cv_header_fcntl_h" = "yes"
+then :
   py_cv_module_fcntl=yes
-else
+else $as_nop
   py_cv_module_fcntl=missing
 fi
-else
+else $as_nop
   py_cv_module_fcntl=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_FCNTL_STATE=$py_cv_module_fcntl$as_nl"
-  if test "x$py_cv_module_fcntl" = xyes; then :
+  if test "x$py_cv_module_fcntl" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE_FCNTL_LDFLAGS=$FCNTL_LIBS$as_nl"
@@ -26467,27 +28743,31 @@ else
   MODULE_FCNTL_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_fcntl" >&5
-$as_echo "$py_cv_module_fcntl" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_fcntl" >&5
+printf "%s\n" "$py_cv_module_fcntl" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module mmap" >&5
-$as_echo_n "checking for stdlib extension module mmap... " >&6; }
-        if test "$py_cv_module_mmap" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module mmap" >&5
+printf %s "checking for stdlib extension module mmap... " >&6; }
+        if test "$py_cv_module_mmap" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_header_sys_mman_h" = "yes" -a "$ac_cv_header_sys_stat_h" = "yes"; then :
+    if true
+then :
+  if test "$ac_cv_header_sys_mman_h" = "yes" -a "$ac_cv_header_sys_stat_h" = "yes"
+then :
   py_cv_module_mmap=yes
-else
+else $as_nop
   py_cv_module_mmap=missing
 fi
-else
+else $as_nop
   py_cv_module_mmap=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_MMAP_STATE=$py_cv_module_mmap$as_nl"
-  if test "x$py_cv_module_mmap" = xyes; then :
+  if test "x$py_cv_module_mmap" = xyes
+then :
 
 
 
@@ -26501,27 +28781,31 @@ else
   MODULE_MMAP_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_mmap" >&5
-$as_echo "$py_cv_module_mmap" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_mmap" >&5
+printf "%s\n" "$py_cv_module_mmap" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _socket" >&5
-$as_echo_n "checking for stdlib extension module _socket... " >&6; }
-        if test "$py_cv_module__socket" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _socket" >&5
+printf %s "checking for stdlib extension module _socket... " >&6; }
+        if test "$py_cv_module__socket" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_header_sys_socket_h" = "yes"                     -a "$ac_cv_header_sys_types_h" = "yes"                     -a "$ac_cv_header_netinet_in_h" = "yes"; then :
+    if true
+then :
+  if test "$ac_cv_header_sys_socket_h" = "yes"                     -a "$ac_cv_header_sys_types_h" = "yes"                     -a "$ac_cv_header_netinet_in_h" = "yes"
+then :
   py_cv_module__socket=yes
-else
+else $as_nop
   py_cv_module__socket=missing
 fi
-else
+else $as_nop
   py_cv_module__socket=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SOCKET_STATE=$py_cv_module__socket$as_nl"
-  if test "x$py_cv_module__socket" = xyes; then :
+  if test "x$py_cv_module__socket" = xyes
+then :
 
 
 
@@ -26535,28 +28819,32 @@ else
   MODULE__SOCKET_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__socket" >&5
-$as_echo "$py_cv_module__socket" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__socket" >&5
+printf "%s\n" "$py_cv_module__socket" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module grp" >&5
-$as_echo_n "checking for stdlib extension module grp... " >&6; }
-        if test "$py_cv_module_grp" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module grp" >&5
+printf %s "checking for stdlib extension module grp... " >&6; }
+        if test "$py_cv_module_grp" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_func_getgrgid" = yes -o "$ac_cv_func_getgrgid_r" = yes; then :
+    if true
+then :
+  if test "$ac_cv_func_getgrgid" = yes -o "$ac_cv_func_getgrgid_r" = yes
+then :
   py_cv_module_grp=yes
-else
+else $as_nop
   py_cv_module_grp=missing
 fi
-else
+else $as_nop
   py_cv_module_grp=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_GRP_STATE=$py_cv_module_grp$as_nl"
-  if test "x$py_cv_module_grp" = xyes; then :
+  if test "x$py_cv_module_grp" = xyes
+then :
 
 
 
@@ -26570,61 +28858,31 @@ else
   MODULE_GRP_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_grp" >&5
-$as_echo "$py_cv_module_grp" >&6; }
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module ossaudiodev" >&5
-$as_echo_n "checking for stdlib extension module ossaudiodev... " >&6; }
-        if test "$py_cv_module_ossaudiodev" != "n/a"; then :
-
-    if true; then :
-  if test "$ac_cv_header_linux_soundcard_h" = yes -o "$ac_cv_header_sys_soundcard_h" = yes; then :
-  py_cv_module_ossaudiodev=yes
-else
-  py_cv_module_ossaudiodev=missing
-fi
-else
-  py_cv_module_ossaudiodev=disabled
-fi
-
-fi
-  as_fn_append MODULE_BLOCK "MODULE_OSSAUDIODEV_STATE=$py_cv_module_ossaudiodev$as_nl"
-  if test "x$py_cv_module_ossaudiodev" = xyes; then :
-
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_grp" >&5
+printf "%s\n" "$py_cv_module_grp" >&6; }
 
-    as_fn_append MODULE_BLOCK "MODULE_OSSAUDIODEV_LDFLAGS=$OSSAUDIODEV_LIBS$as_nl"
 
-fi
-   if test "$py_cv_module_ossaudiodev" = yes; then
-  MODULE_OSSAUDIODEV_TRUE=
-  MODULE_OSSAUDIODEV_FALSE='#'
-else
-  MODULE_OSSAUDIODEV_TRUE='#'
-  MODULE_OSSAUDIODEV_FALSE=
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_ossaudiodev" >&5
-$as_echo "$py_cv_module_ossaudiodev" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module pwd" >&5
+printf %s "checking for stdlib extension module pwd... " >&6; }
+        if test "$py_cv_module_pwd" != "n/a"
+then :
 
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module pwd" >&5
-$as_echo_n "checking for stdlib extension module pwd... " >&6; }
-        if test "$py_cv_module_pwd" != "n/a"; then :
-
-    if true; then :
-  if test "$ac_cv_func_getpwuid" = yes -o "$ac_cv_func_getpwuid_r" = yes; then :
+    if true
+then :
+  if test "$ac_cv_func_getpwuid" = yes -o "$ac_cv_func_getpwuid_r" = yes
+then :
   py_cv_module_pwd=yes
-else
+else $as_nop
   py_cv_module_pwd=missing
 fi
-else
+else $as_nop
   py_cv_module_pwd=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_PWD_STATE=$py_cv_module_pwd$as_nl"
-  if test "x$py_cv_module_pwd" = xyes; then :
+  if test "x$py_cv_module_pwd" = xyes
+then :
 
 
 
@@ -26638,27 +28896,31 @@ else
   MODULE_PWD_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_pwd" >&5
-$as_echo "$py_cv_module_pwd" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_pwd" >&5
+printf "%s\n" "$py_cv_module_pwd" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module resource" >&5
-$as_echo_n "checking for stdlib extension module resource... " >&6; }
-        if test "$py_cv_module_resource" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module resource" >&5
+printf %s "checking for stdlib extension module resource... " >&6; }
+        if test "$py_cv_module_resource" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_header_sys_resource_h" = yes; then :
+    if true
+then :
+  if test "$ac_cv_header_sys_resource_h" = yes
+then :
   py_cv_module_resource=yes
-else
+else $as_nop
   py_cv_module_resource=missing
 fi
-else
+else $as_nop
   py_cv_module_resource=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_RESOURCE_STATE=$py_cv_module_resource$as_nl"
-  if test "x$py_cv_module_resource" = xyes; then :
+  if test "x$py_cv_module_resource" = xyes
+then :
 
 
 
@@ -26672,27 +28934,31 @@ else
   MODULE_RESOURCE_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_resource" >&5
-$as_echo "$py_cv_module_resource" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_resource" >&5
+printf "%s\n" "$py_cv_module_resource" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _scproxy" >&5
-$as_echo_n "checking for stdlib extension module _scproxy... " >&6; }
-        if test "$py_cv_module__scproxy" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _scproxy" >&5
+printf %s "checking for stdlib extension module _scproxy... " >&6; }
+        if test "$py_cv_module__scproxy" != "n/a"
+then :
 
-    if test "$ac_sys_system" = "Darwin"; then :
-  if true; then :
+    if test "$ac_sys_system" = "Darwin"
+then :
+  if true
+then :
   py_cv_module__scproxy=yes
-else
+else $as_nop
   py_cv_module__scproxy=missing
 fi
-else
+else $as_nop
   py_cv_module__scproxy=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SCPROXY_STATE=$py_cv_module__scproxy$as_nl"
-  if test "x$py_cv_module__scproxy" = xyes; then :
+  if test "x$py_cv_module__scproxy" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE__SCPROXY_LDFLAGS=-framework SystemConfiguration -framework CoreFoundation$as_nl"
@@ -26706,61 +28972,31 @@ else
   MODULE__SCPROXY_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__scproxy" >&5
-$as_echo "$py_cv_module__scproxy" >&6; }
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module spwd" >&5
-$as_echo_n "checking for stdlib extension module spwd... " >&6; }
-        if test "$py_cv_module_spwd" != "n/a"; then :
-
-    if true; then :
-  if test "$ac_cv_func_getspent" = yes -o "$ac_cv_func_getspnam" = yes; then :
-  py_cv_module_spwd=yes
-else
-  py_cv_module_spwd=missing
-fi
-else
-  py_cv_module_spwd=disabled
-fi
-
-fi
-  as_fn_append MODULE_BLOCK "MODULE_SPWD_STATE=$py_cv_module_spwd$as_nl"
-  if test "x$py_cv_module_spwd" = xyes; then :
-
-
-
-
-fi
-   if test "$py_cv_module_spwd" = yes; then
-  MODULE_SPWD_TRUE=
-  MODULE_SPWD_FALSE='#'
-else
-  MODULE_SPWD_TRUE='#'
-  MODULE_SPWD_FALSE=
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_spwd" >&5
-$as_echo "$py_cv_module_spwd" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__scproxy" >&5
+printf "%s\n" "$py_cv_module__scproxy" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module syslog" >&5
-$as_echo_n "checking for stdlib extension module syslog... " >&6; }
-        if test "$py_cv_module_syslog" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module syslog" >&5
+printf %s "checking for stdlib extension module syslog... " >&6; }
+        if test "$py_cv_module_syslog" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_header_syslog_h" = yes; then :
+    if true
+then :
+  if test "$ac_cv_header_syslog_h" = yes
+then :
   py_cv_module_syslog=yes
-else
+else $as_nop
   py_cv_module_syslog=missing
 fi
-else
+else $as_nop
   py_cv_module_syslog=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_SYSLOG_STATE=$py_cv_module_syslog$as_nl"
-  if test "x$py_cv_module_syslog" = xyes; then :
+  if test "x$py_cv_module_syslog" = xyes
+then :
 
 
 
@@ -26774,27 +29010,31 @@ else
   MODULE_SYSLOG_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_syslog" >&5
-$as_echo "$py_cv_module_syslog" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_syslog" >&5
+printf "%s\n" "$py_cv_module_syslog" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module termios" >&5
-$as_echo_n "checking for stdlib extension module termios... " >&6; }
-        if test "$py_cv_module_termios" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module termios" >&5
+printf %s "checking for stdlib extension module termios... " >&6; }
+        if test "$py_cv_module_termios" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_header_termios_h" = yes; then :
+    if true
+then :
+  if test "$ac_cv_header_termios_h" = yes
+then :
   py_cv_module_termios=yes
-else
+else $as_nop
   py_cv_module_termios=missing
 fi
-else
+else $as_nop
   py_cv_module_termios=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_TERMIOS_STATE=$py_cv_module_termios$as_nl"
-  if test "x$py_cv_module_termios" = xyes; then :
+  if test "x$py_cv_module_termios" = xyes
+then :
 
 
 
@@ -26808,28 +29048,32 @@ else
   MODULE_TERMIOS_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_termios" >&5
-$as_echo "$py_cv_module_termios" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_termios" >&5
+printf "%s\n" "$py_cv_module_termios" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module pyexpat" >&5
-$as_echo_n "checking for stdlib extension module pyexpat... " >&6; }
-        if test "$py_cv_module_pyexpat" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module pyexpat" >&5
+printf %s "checking for stdlib extension module pyexpat... " >&6; }
+        if test "$py_cv_module_pyexpat" != "n/a"
+then :
 
-    if true; then :
-  if true; then :
+    if true
+then :
+  if test "$ac_cv_header_sys_time_h" = "yes"
+then :
   py_cv_module_pyexpat=yes
-else
+else $as_nop
   py_cv_module_pyexpat=missing
 fi
-else
+else $as_nop
   py_cv_module_pyexpat=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_PYEXPAT_STATE=$py_cv_module_pyexpat$as_nl"
-  if test "x$py_cv_module_pyexpat" = xyes; then :
+  if test "x$py_cv_module_pyexpat" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE_PYEXPAT_CFLAGS=$LIBEXPAT_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE_PYEXPAT_LDFLAGS=$LIBEXPAT_LDFLAGS$as_nl"
@@ -26843,27 +29087,31 @@ else
   MODULE_PYEXPAT_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_pyexpat" >&5
-$as_echo "$py_cv_module_pyexpat" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_pyexpat" >&5
+printf "%s\n" "$py_cv_module_pyexpat" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _elementtree" >&5
-$as_echo_n "checking for stdlib extension module _elementtree... " >&6; }
-        if test "$py_cv_module__elementtree" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _elementtree" >&5
+printf %s "checking for stdlib extension module _elementtree... " >&6; }
+        if test "$py_cv_module__elementtree" != "n/a"
+then :
 
-    if true; then :
-  if true; then :
+    if true
+then :
+  if true
+then :
   py_cv_module__elementtree=yes
-else
+else $as_nop
   py_cv_module__elementtree=missing
 fi
-else
+else $as_nop
   py_cv_module__elementtree=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__ELEMENTTREE_STATE=$py_cv_module__elementtree$as_nl"
-  if test "x$py_cv_module__elementtree" = xyes; then :
+  if test "x$py_cv_module__elementtree" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__ELEMENTTREE_CFLAGS=$LIBEXPAT_CFLAGS$as_nl"
 
@@ -26877,11 +29125,12 @@ else
   MODULE__ELEMENTTREE_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__elementtree" >&5
-$as_echo "$py_cv_module__elementtree" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__elementtree" >&5
+printf "%s\n" "$py_cv_module__elementtree" >&6; }
 
 
-        if test "$py_cv_module__codecs_cn" != "n/a"; then :
+        if test "$py_cv_module__codecs_cn" != "n/a"
+then :
   py_cv_module__codecs_cn=yes
 fi
    if test "$py_cv_module__codecs_cn" = yes; then
@@ -26893,7 +29142,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CODECS_CN_STATE=$py_cv_module__codecs_cn$as_nl"
-  if test "x$py_cv_module__codecs_cn" = xyes; then :
+  if test "x$py_cv_module__codecs_cn" = xyes
+then :
 
 
 
@@ -26901,7 +29151,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__codecs_hk" != "n/a"; then :
+        if test "$py_cv_module__codecs_hk" != "n/a"
+then :
   py_cv_module__codecs_hk=yes
 fi
    if test "$py_cv_module__codecs_hk" = yes; then
@@ -26913,7 +29164,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CODECS_HK_STATE=$py_cv_module__codecs_hk$as_nl"
-  if test "x$py_cv_module__codecs_hk" = xyes; then :
+  if test "x$py_cv_module__codecs_hk" = xyes
+then :
 
 
 
@@ -26921,7 +29173,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__codecs_iso2022" != "n/a"; then :
+        if test "$py_cv_module__codecs_iso2022" != "n/a"
+then :
   py_cv_module__codecs_iso2022=yes
 fi
    if test "$py_cv_module__codecs_iso2022" = yes; then
@@ -26933,7 +29186,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CODECS_ISO2022_STATE=$py_cv_module__codecs_iso2022$as_nl"
-  if test "x$py_cv_module__codecs_iso2022" = xyes; then :
+  if test "x$py_cv_module__codecs_iso2022" = xyes
+then :
 
 
 
@@ -26941,7 +29195,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__codecs_jp" != "n/a"; then :
+        if test "$py_cv_module__codecs_jp" != "n/a"
+then :
   py_cv_module__codecs_jp=yes
 fi
    if test "$py_cv_module__codecs_jp" = yes; then
@@ -26953,7 +29208,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CODECS_JP_STATE=$py_cv_module__codecs_jp$as_nl"
-  if test "x$py_cv_module__codecs_jp" = xyes; then :
+  if test "x$py_cv_module__codecs_jp" = xyes
+then :
 
 
 
@@ -26961,7 +29217,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__codecs_kr" != "n/a"; then :
+        if test "$py_cv_module__codecs_kr" != "n/a"
+then :
   py_cv_module__codecs_kr=yes
 fi
    if test "$py_cv_module__codecs_kr" = yes; then
@@ -26973,7 +29230,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CODECS_KR_STATE=$py_cv_module__codecs_kr$as_nl"
-  if test "x$py_cv_module__codecs_kr" = xyes; then :
+  if test "x$py_cv_module__codecs_kr" = xyes
+then :
 
 
 
@@ -26981,7 +29239,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__codecs_tw" != "n/a"; then :
+        if test "$py_cv_module__codecs_tw" != "n/a"
+then :
   py_cv_module__codecs_tw=yes
 fi
    if test "$py_cv_module__codecs_tw" = yes; then
@@ -26993,7 +29252,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__CODECS_TW_STATE=$py_cv_module__codecs_tw$as_nl"
-  if test "x$py_cv_module__codecs_tw" = xyes; then :
+  if test "x$py_cv_module__codecs_tw" = xyes
+then :
 
 
 
@@ -27001,7 +29261,8 @@ fi
 fi
 
 
-        if test "$py_cv_module__multibytecodec" != "n/a"; then :
+        if test "$py_cv_module__multibytecodec" != "n/a"
+then :
   py_cv_module__multibytecodec=yes
 fi
    if test "$py_cv_module__multibytecodec" = yes; then
@@ -27013,7 +29274,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE__MULTIBYTECODEC_STATE=$py_cv_module__multibytecodec$as_nl"
-  if test "x$py_cv_module__multibytecodec" = xyes; then :
+  if test "x$py_cv_module__multibytecodec" = xyes
+then :
 
 
 
@@ -27021,7 +29283,8 @@ fi
 fi
 
 
-        if test "$py_cv_module_unicodedata" != "n/a"; then :
+        if test "$py_cv_module_unicodedata" != "n/a"
+then :
   py_cv_module_unicodedata=yes
 fi
    if test "$py_cv_module_unicodedata" = yes; then
@@ -27033,7 +29296,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_UNICODEDATA_STATE=$py_cv_module_unicodedata$as_nl"
-  if test "x$py_cv_module_unicodedata" = xyes; then :
+  if test "x$py_cv_module_unicodedata" = xyes
+then :
 
 
 
@@ -27042,23 +29306,27 @@ fi
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _md5" >&5
-$as_echo_n "checking for stdlib extension module _md5... " >&6; }
-        if test "$py_cv_module__md5" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _md5" >&5
+printf %s "checking for stdlib extension module _md5... " >&6; }
+        if test "$py_cv_module__md5" != "n/a"
+then :
 
-    if test "$with_builtin_md5" = yes; then :
-  if true; then :
+    if test "$with_builtin_md5" = yes
+then :
+  if true
+then :
   py_cv_module__md5=yes
-else
+else $as_nop
   py_cv_module__md5=missing
 fi
-else
+else $as_nop
   py_cv_module__md5=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__MD5_STATE=$py_cv_module__md5$as_nl"
-  if test "x$py_cv_module__md5" = xyes; then :
+  if test "x$py_cv_module__md5" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__MD5_CFLAGS=-I\$(srcdir)/Modules/_hacl/include -I\$(srcdir)/Modules/_hacl/internal -D_BSD_SOURCE -D_DEFAULT_SOURCE$as_nl"
 
@@ -27072,27 +29340,31 @@ else
   MODULE__MD5_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__md5" >&5
-$as_echo "$py_cv_module__md5" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__md5" >&5
+printf "%s\n" "$py_cv_module__md5" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sha1" >&5
-$as_echo_n "checking for stdlib extension module _sha1... " >&6; }
-        if test "$py_cv_module__sha1" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sha1" >&5
+printf %s "checking for stdlib extension module _sha1... " >&6; }
+        if test "$py_cv_module__sha1" != "n/a"
+then :
 
-    if test "$with_builtin_sha1" = yes; then :
-  if true; then :
+    if test "$with_builtin_sha1" = yes
+then :
+  if true
+then :
   py_cv_module__sha1=yes
-else
+else $as_nop
   py_cv_module__sha1=missing
 fi
-else
+else $as_nop
   py_cv_module__sha1=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SHA1_STATE=$py_cv_module__sha1$as_nl"
-  if test "x$py_cv_module__sha1" = xyes; then :
+  if test "x$py_cv_module__sha1" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__SHA1_CFLAGS=-I\$(srcdir)/Modules/_hacl/include -I\$(srcdir)/Modules/_hacl/internal -D_BSD_SOURCE -D_DEFAULT_SOURCE$as_nl"
 
@@ -27106,27 +29378,31 @@ else
   MODULE__SHA1_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sha1" >&5
-$as_echo "$py_cv_module__sha1" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sha1" >&5
+printf "%s\n" "$py_cv_module__sha1" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sha2" >&5
-$as_echo_n "checking for stdlib extension module _sha2... " >&6; }
-        if test "$py_cv_module__sha2" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sha2" >&5
+printf %s "checking for stdlib extension module _sha2... " >&6; }
+        if test "$py_cv_module__sha2" != "n/a"
+then :
 
-    if test "$with_builtin_sha2" = yes; then :
-  if true; then :
+    if test "$with_builtin_sha2" = yes
+then :
+  if true
+then :
   py_cv_module__sha2=yes
-else
+else $as_nop
   py_cv_module__sha2=missing
 fi
-else
+else $as_nop
   py_cv_module__sha2=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SHA2_STATE=$py_cv_module__sha2$as_nl"
-  if test "x$py_cv_module__sha2" = xyes; then :
+  if test "x$py_cv_module__sha2" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__SHA2_CFLAGS=-I\$(srcdir)/Modules/_hacl/include -I\$(srcdir)/Modules/_hacl/internal -D_BSD_SOURCE -D_DEFAULT_SOURCE$as_nl"
 
@@ -27140,27 +29416,31 @@ else
   MODULE__SHA2_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sha2" >&5
-$as_echo "$py_cv_module__sha2" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sha2" >&5
+printf "%s\n" "$py_cv_module__sha2" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sha3" >&5
-$as_echo_n "checking for stdlib extension module _sha3... " >&6; }
-        if test "$py_cv_module__sha3" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sha3" >&5
+printf %s "checking for stdlib extension module _sha3... " >&6; }
+        if test "$py_cv_module__sha3" != "n/a"
+then :
 
-    if test "$with_builtin_sha3" = yes; then :
-  if true; then :
+    if test "$with_builtin_sha3" = yes
+then :
+  if true
+then :
   py_cv_module__sha3=yes
-else
+else $as_nop
   py_cv_module__sha3=missing
 fi
-else
+else $as_nop
   py_cv_module__sha3=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SHA3_STATE=$py_cv_module__sha3$as_nl"
-  if test "x$py_cv_module__sha3" = xyes; then :
+  if test "x$py_cv_module__sha3" = xyes
+then :
 
 
 
@@ -27174,27 +29454,31 @@ else
   MODULE__SHA3_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sha3" >&5
-$as_echo "$py_cv_module__sha3" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sha3" >&5
+printf "%s\n" "$py_cv_module__sha3" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _blake2" >&5
-$as_echo_n "checking for stdlib extension module _blake2... " >&6; }
-        if test "$py_cv_module__blake2" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _blake2" >&5
+printf %s "checking for stdlib extension module _blake2... " >&6; }
+        if test "$py_cv_module__blake2" != "n/a"
+then :
 
-    if test "$with_builtin_blake2" = yes; then :
-  if true; then :
+    if test "$with_builtin_blake2" = yes
+then :
+  if true
+then :
   py_cv_module__blake2=yes
-else
+else $as_nop
   py_cv_module__blake2=missing
 fi
-else
+else $as_nop
   py_cv_module__blake2=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__BLAKE2_STATE=$py_cv_module__blake2$as_nl"
-  if test "x$py_cv_module__blake2" = xyes; then :
+  if test "x$py_cv_module__blake2" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__BLAKE2_CFLAGS=$LIBB2_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__BLAKE2_LDFLAGS=$LIBB2_LIBS$as_nl"
@@ -27208,62 +29492,32 @@ else
   MODULE__BLAKE2_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__blake2" >&5
-$as_echo "$py_cv_module__blake2" >&6; }
-
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _crypt" >&5
-$as_echo_n "checking for stdlib extension module _crypt... " >&6; }
-        if test "$py_cv_module__crypt" != "n/a"; then :
-
-    if true; then :
-  if test "$ac_cv_crypt_crypt" = yes; then :
-  py_cv_module__crypt=yes
-else
-  py_cv_module__crypt=missing
-fi
-else
-  py_cv_module__crypt=disabled
-fi
-
-fi
-  as_fn_append MODULE_BLOCK "MODULE__CRYPT_STATE=$py_cv_module__crypt$as_nl"
-  if test "x$py_cv_module__crypt" = xyes; then :
-
-    as_fn_append MODULE_BLOCK "MODULE__CRYPT_CFLAGS=$LIBCRYPT_CFLAGS$as_nl"
-    as_fn_append MODULE_BLOCK "MODULE__CRYPT_LDFLAGS=$LIBCRYPT_LIBS$as_nl"
-
-fi
-   if test "$py_cv_module__crypt" = yes; then
-  MODULE__CRYPT_TRUE=
-  MODULE__CRYPT_FALSE='#'
-else
-  MODULE__CRYPT_TRUE='#'
-  MODULE__CRYPT_FALSE=
-fi
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__blake2" >&5
+printf "%s\n" "$py_cv_module__blake2" >&6; }
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__crypt" >&5
-$as_echo "$py_cv_module__crypt" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _ctypes" >&5
-$as_echo_n "checking for stdlib extension module _ctypes... " >&6; }
-        if test "$py_cv_module__ctypes" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _ctypes" >&5
+printf %s "checking for stdlib extension module _ctypes... " >&6; }
+        if test "$py_cv_module__ctypes" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_libffi" = yes; then :
+    if true
+then :
+  if test "$have_libffi" = yes
+then :
   py_cv_module__ctypes=yes
-else
+else $as_nop
   py_cv_module__ctypes=missing
 fi
-else
+else $as_nop
   py_cv_module__ctypes=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__CTYPES_STATE=$py_cv_module__ctypes$as_nl"
-  if test "x$py_cv_module__ctypes" = xyes; then :
+  if test "x$py_cv_module__ctypes" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__CTYPES_CFLAGS=$NO_STRICT_OVERFLOW_CFLAGS $LIBFFI_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__CTYPES_LDFLAGS=$LIBFFI_LIBS$as_nl"
@@ -27277,27 +29531,31 @@ else
   MODULE__CTYPES_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__ctypes" >&5
-$as_echo "$py_cv_module__ctypes" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__ctypes" >&5
+printf "%s\n" "$py_cv_module__ctypes" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _curses" >&5
-$as_echo_n "checking for stdlib extension module _curses... " >&6; }
-        if test "$py_cv_module__curses" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _curses" >&5
+printf %s "checking for stdlib extension module _curses... " >&6; }
+        if test "$py_cv_module__curses" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_curses" != "no"; then :
+    if true
+then :
+  if test "$have_curses" != "no"
+then :
   py_cv_module__curses=yes
-else
+else $as_nop
   py_cv_module__curses=missing
 fi
-else
+else $as_nop
   py_cv_module__curses=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__CURSES_STATE=$py_cv_module__curses$as_nl"
-  if test "x$py_cv_module__curses" = xyes; then :
+  if test "x$py_cv_module__curses" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__CURSES_CFLAGS=$CURSES_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__CURSES_LDFLAGS=$CURSES_LIBS
@@ -27312,27 +29570,31 @@ else
   MODULE__CURSES_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__curses" >&5
-$as_echo "$py_cv_module__curses" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__curses" >&5
+printf "%s\n" "$py_cv_module__curses" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _curses_panel" >&5
-$as_echo_n "checking for stdlib extension module _curses_panel... " >&6; }
-        if test "$py_cv_module__curses_panel" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _curses_panel" >&5
+printf %s "checking for stdlib extension module _curses_panel... " >&6; }
+        if test "$py_cv_module__curses_panel" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_panel" != "no"; then :
+    if true
+then :
+  if test "$have_panel" != "no"
+then :
   py_cv_module__curses_panel=yes
-else
+else $as_nop
   py_cv_module__curses_panel=missing
 fi
-else
+else $as_nop
   py_cv_module__curses_panel=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__CURSES_PANEL_STATE=$py_cv_module__curses_panel$as_nl"
-  if test "x$py_cv_module__curses_panel" = xyes; then :
+  if test "x$py_cv_module__curses_panel" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__CURSES_PANEL_CFLAGS=$PANEL_CFLAGS $CURSES_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__CURSES_PANEL_LDFLAGS=$PANEL_LIBS $CURSES_LIBS
@@ -27347,27 +29609,31 @@ else
   MODULE__CURSES_PANEL_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__curses_panel" >&5
-$as_echo "$py_cv_module__curses_panel" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__curses_panel" >&5
+printf "%s\n" "$py_cv_module__curses_panel" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _decimal" >&5
-$as_echo_n "checking for stdlib extension module _decimal... " >&6; }
-        if test "$py_cv_module__decimal" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _decimal" >&5
+printf %s "checking for stdlib extension module _decimal... " >&6; }
+        if test "$py_cv_module__decimal" != "n/a"
+then :
 
-    if true; then :
-  if true; then :
+    if true
+then :
+  if true
+then :
   py_cv_module__decimal=yes
-else
+else $as_nop
   py_cv_module__decimal=missing
 fi
-else
+else $as_nop
   py_cv_module__decimal=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__DECIMAL_STATE=$py_cv_module__decimal$as_nl"
-  if test "x$py_cv_module__decimal" = xyes; then :
+  if test "x$py_cv_module__decimal" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__DECIMAL_CFLAGS=$LIBMPDEC_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__DECIMAL_LDFLAGS=$LIBMPDEC_LDFLAGS$as_nl"
@@ -27381,27 +29647,31 @@ else
   MODULE__DECIMAL_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__decimal" >&5
-$as_echo "$py_cv_module__decimal" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__decimal" >&5
+printf "%s\n" "$py_cv_module__decimal" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _dbm" >&5
-$as_echo_n "checking for stdlib extension module _dbm... " >&6; }
-        if test "$py_cv_module__dbm" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _dbm" >&5
+printf %s "checking for stdlib extension module _dbm... " >&6; }
+        if test "$py_cv_module__dbm" != "n/a"
+then :
 
-    if test -n "$with_dbmliborder"; then :
-  if test "$have_dbm" != "no"; then :
+    if test -n "$with_dbmliborder"
+then :
+  if test "$have_dbm" != "no"
+then :
   py_cv_module__dbm=yes
-else
+else $as_nop
   py_cv_module__dbm=missing
 fi
-else
+else $as_nop
   py_cv_module__dbm=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__DBM_STATE=$py_cv_module__dbm$as_nl"
-  if test "x$py_cv_module__dbm" = xyes; then :
+  if test "x$py_cv_module__dbm" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__DBM_CFLAGS=$DBM_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__DBM_LDFLAGS=$DBM_LIBS$as_nl"
@@ -27415,27 +29685,31 @@ else
   MODULE__DBM_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__dbm" >&5
-$as_echo "$py_cv_module__dbm" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__dbm" >&5
+printf "%s\n" "$py_cv_module__dbm" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _gdbm" >&5
-$as_echo_n "checking for stdlib extension module _gdbm... " >&6; }
-        if test "$py_cv_module__gdbm" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _gdbm" >&5
+printf %s "checking for stdlib extension module _gdbm... " >&6; }
+        if test "$py_cv_module__gdbm" != "n/a"
+then :
 
-    if test "$have_gdbm_dbmliborder" = yes; then :
-  if test "$have_gdbm" = yes; then :
+    if test "$have_gdbm_dbmliborder" = yes
+then :
+  if test "$have_gdbm" = yes
+then :
   py_cv_module__gdbm=yes
-else
+else $as_nop
   py_cv_module__gdbm=missing
 fi
-else
+else $as_nop
   py_cv_module__gdbm=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__GDBM_STATE=$py_cv_module__gdbm$as_nl"
-  if test "x$py_cv_module__gdbm" = xyes; then :
+  if test "x$py_cv_module__gdbm" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__GDBM_CFLAGS=$GDBM_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__GDBM_LDFLAGS=$GDBM_LIBS$as_nl"
@@ -27449,61 +29723,31 @@ else
   MODULE__GDBM_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__gdbm" >&5
-$as_echo "$py_cv_module__gdbm" >&6; }
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module nis" >&5
-$as_echo_n "checking for stdlib extension module nis... " >&6; }
-        if test "$py_cv_module_nis" != "n/a"; then :
-
-    if true; then :
-  if test "$have_nis" = yes -a "$ac_cv_header_rpc_rpc_h" = yes; then :
-  py_cv_module_nis=yes
-else
-  py_cv_module_nis=missing
-fi
-else
-  py_cv_module_nis=disabled
-fi
-
-fi
-  as_fn_append MODULE_BLOCK "MODULE_NIS_STATE=$py_cv_module_nis$as_nl"
-  if test "x$py_cv_module_nis" = xyes; then :
-
-    as_fn_append MODULE_BLOCK "MODULE_NIS_CFLAGS=$LIBNSL_CFLAGS$as_nl"
-    as_fn_append MODULE_BLOCK "MODULE_NIS_LDFLAGS=$LIBNSL_LIBS$as_nl"
-
-fi
-   if test "$py_cv_module_nis" = yes; then
-  MODULE_NIS_TRUE=
-  MODULE_NIS_FALSE='#'
-else
-  MODULE_NIS_TRUE='#'
-  MODULE_NIS_FALSE=
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_nis" >&5
-$as_echo "$py_cv_module_nis" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__gdbm" >&5
+printf "%s\n" "$py_cv_module__gdbm" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module readline" >&5
-$as_echo_n "checking for stdlib extension module readline... " >&6; }
-        if test "$py_cv_module_readline" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module readline" >&5
+printf %s "checking for stdlib extension module readline... " >&6; }
+        if test "$py_cv_module_readline" != "n/a"
+then :
 
-    if true; then :
-  if test "$with_readline" != "no"; then :
+    if true
+then :
+  if test "$with_readline" != "no"
+then :
   py_cv_module_readline=yes
-else
+else $as_nop
   py_cv_module_readline=missing
 fi
-else
+else $as_nop
   py_cv_module_readline=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_READLINE_STATE=$py_cv_module_readline$as_nl"
-  if test "x$py_cv_module_readline" = xyes; then :
+  if test "x$py_cv_module_readline" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE_READLINE_CFLAGS=$READLINE_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE_READLINE_LDFLAGS=$READLINE_LIBS$as_nl"
@@ -27517,27 +29761,31 @@ else
   MODULE_READLINE_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_readline" >&5
-$as_echo "$py_cv_module_readline" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_readline" >&5
+printf "%s\n" "$py_cv_module_readline" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sqlite3" >&5
-$as_echo_n "checking for stdlib extension module _sqlite3... " >&6; }
-        if test "$py_cv_module__sqlite3" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _sqlite3" >&5
+printf %s "checking for stdlib extension module _sqlite3... " >&6; }
+        if test "$py_cv_module__sqlite3" != "n/a"
+then :
 
-    if test "$have_sqlite3" = "yes"; then :
-  if test "$have_supported_sqlite3" = "yes"; then :
+    if test "$have_sqlite3" = "yes"
+then :
+  if test "$have_supported_sqlite3" = "yes"
+then :
   py_cv_module__sqlite3=yes
-else
+else $as_nop
   py_cv_module__sqlite3=missing
 fi
-else
+else $as_nop
   py_cv_module__sqlite3=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SQLITE3_STATE=$py_cv_module__sqlite3$as_nl"
-  if test "x$py_cv_module__sqlite3" = xyes; then :
+  if test "x$py_cv_module__sqlite3" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__SQLITE3_CFLAGS=$LIBSQLITE3_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__SQLITE3_LDFLAGS=$LIBSQLITE3_LIBS$as_nl"
@@ -27551,27 +29799,31 @@ else
   MODULE__SQLITE3_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sqlite3" >&5
-$as_echo "$py_cv_module__sqlite3" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__sqlite3" >&5
+printf "%s\n" "$py_cv_module__sqlite3" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _tkinter" >&5
-$as_echo_n "checking for stdlib extension module _tkinter... " >&6; }
-        if test "$py_cv_module__tkinter" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _tkinter" >&5
+printf %s "checking for stdlib extension module _tkinter... " >&6; }
+        if test "$py_cv_module__tkinter" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_tcltk" = "yes"; then :
+    if true
+then :
+  if test "$have_tcltk" = "yes"
+then :
   py_cv_module__tkinter=yes
-else
+else $as_nop
   py_cv_module__tkinter=missing
 fi
-else
+else $as_nop
   py_cv_module__tkinter=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TKINTER_STATE=$py_cv_module__tkinter$as_nl"
-  if test "x$py_cv_module__tkinter" = xyes; then :
+  if test "x$py_cv_module__tkinter" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__TKINTER_CFLAGS=$TCLTK_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__TKINTER_LDFLAGS=$TCLTK_LIBS$as_nl"
@@ -27585,27 +29837,31 @@ else
   MODULE__TKINTER_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__tkinter" >&5
-$as_echo "$py_cv_module__tkinter" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__tkinter" >&5
+printf "%s\n" "$py_cv_module__tkinter" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _uuid" >&5
-$as_echo_n "checking for stdlib extension module _uuid... " >&6; }
-        if test "$py_cv_module__uuid" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _uuid" >&5
+printf %s "checking for stdlib extension module _uuid... " >&6; }
+        if test "$py_cv_module__uuid" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_uuid" = "yes"; then :
+    if true
+then :
+  if test "$have_uuid" = "yes"
+then :
   py_cv_module__uuid=yes
-else
+else $as_nop
   py_cv_module__uuid=missing
 fi
-else
+else $as_nop
   py_cv_module__uuid=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__UUID_STATE=$py_cv_module__uuid$as_nl"
-  if test "x$py_cv_module__uuid" = xyes; then :
+  if test "x$py_cv_module__uuid" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__UUID_CFLAGS=$LIBUUID_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__UUID_LDFLAGS=$LIBUUID_LIBS$as_nl"
@@ -27619,28 +29875,32 @@ else
   MODULE__UUID_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__uuid" >&5
-$as_echo "$py_cv_module__uuid" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__uuid" >&5
+printf "%s\n" "$py_cv_module__uuid" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module zlib" >&5
-$as_echo_n "checking for stdlib extension module zlib... " >&6; }
-        if test "$py_cv_module_zlib" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module zlib" >&5
+printf %s "checking for stdlib extension module zlib... " >&6; }
+        if test "$py_cv_module_zlib" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_zlib" = yes; then :
+    if true
+then :
+  if test "$have_zlib" = yes
+then :
   py_cv_module_zlib=yes
-else
+else $as_nop
   py_cv_module_zlib=missing
 fi
-else
+else $as_nop
   py_cv_module_zlib=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_ZLIB_STATE=$py_cv_module_zlib$as_nl"
-  if test "x$py_cv_module_zlib" = xyes; then :
+  if test "x$py_cv_module_zlib" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE_ZLIB_CFLAGS=$ZLIB_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE_ZLIB_LDFLAGS=$ZLIB_LIBS$as_nl"
@@ -27654,11 +29914,12 @@ else
   MODULE_ZLIB_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_zlib" >&5
-$as_echo "$py_cv_module_zlib" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_zlib" >&5
+printf "%s\n" "$py_cv_module_zlib" >&6; }
 
 
-        if test "$py_cv_module_binascii" != "n/a"; then :
+        if test "$py_cv_module_binascii" != "n/a"
+then :
   py_cv_module_binascii=yes
 fi
    if test "$py_cv_module_binascii" = yes; then
@@ -27670,7 +29931,8 @@ else
 fi
 
   as_fn_append MODULE_BLOCK "MODULE_BINASCII_STATE=$py_cv_module_binascii$as_nl"
-  if test "x$py_cv_module_binascii" = xyes; then :
+  if test "x$py_cv_module_binascii" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE_BINASCII_CFLAGS=$BINASCII_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE_BINASCII_LDFLAGS=$BINASCII_LIBS$as_nl"
@@ -27678,23 +29940,27 @@ fi
 fi
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _bz2" >&5
-$as_echo_n "checking for stdlib extension module _bz2... " >&6; }
-        if test "$py_cv_module__bz2" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _bz2" >&5
+printf %s "checking for stdlib extension module _bz2... " >&6; }
+        if test "$py_cv_module__bz2" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_bzip2" = yes; then :
+    if true
+then :
+  if test "$have_bzip2" = yes
+then :
   py_cv_module__bz2=yes
-else
+else $as_nop
   py_cv_module__bz2=missing
 fi
-else
+else $as_nop
   py_cv_module__bz2=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__BZ2_STATE=$py_cv_module__bz2$as_nl"
-  if test "x$py_cv_module__bz2" = xyes; then :
+  if test "x$py_cv_module__bz2" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__BZ2_CFLAGS=$BZIP2_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__BZ2_LDFLAGS=$BZIP2_LIBS$as_nl"
@@ -27708,27 +29974,31 @@ else
   MODULE__BZ2_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__bz2" >&5
-$as_echo "$py_cv_module__bz2" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__bz2" >&5
+printf "%s\n" "$py_cv_module__bz2" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _lzma" >&5
-$as_echo_n "checking for stdlib extension module _lzma... " >&6; }
-        if test "$py_cv_module__lzma" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _lzma" >&5
+printf %s "checking for stdlib extension module _lzma... " >&6; }
+        if test "$py_cv_module__lzma" != "n/a"
+then :
 
-    if true; then :
-  if test "$have_liblzma" = yes; then :
+    if true
+then :
+  if test "$have_liblzma" = yes
+then :
   py_cv_module__lzma=yes
-else
+else $as_nop
   py_cv_module__lzma=missing
 fi
-else
+else $as_nop
   py_cv_module__lzma=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__LZMA_STATE=$py_cv_module__lzma$as_nl"
-  if test "x$py_cv_module__lzma" = xyes; then :
+  if test "x$py_cv_module__lzma" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__LZMA_CFLAGS=$LIBLZMA_CFLAGS$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__LZMA_LDFLAGS=$LIBLZMA_LIBS$as_nl"
@@ -27742,28 +30012,32 @@ else
   MODULE__LZMA_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__lzma" >&5
-$as_echo "$py_cv_module__lzma" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__lzma" >&5
+printf "%s\n" "$py_cv_module__lzma" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _ssl" >&5
-$as_echo_n "checking for stdlib extension module _ssl... " >&6; }
-        if test "$py_cv_module__ssl" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _ssl" >&5
+printf %s "checking for stdlib extension module _ssl... " >&6; }
+        if test "$py_cv_module__ssl" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_working_openssl_ssl" = yes; then :
+    if true
+then :
+  if test "$ac_cv_working_openssl_ssl" = yes
+then :
   py_cv_module__ssl=yes
-else
+else $as_nop
   py_cv_module__ssl=missing
 fi
-else
+else $as_nop
   py_cv_module__ssl=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__SSL_STATE=$py_cv_module__ssl$as_nl"
-  if test "x$py_cv_module__ssl" = xyes; then :
+  if test "x$py_cv_module__ssl" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__SSL_CFLAGS=$OPENSSL_INCLUDES$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__SSL_LDFLAGS=$OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH $OPENSSL_LIBS$as_nl"
@@ -27777,27 +30051,31 @@ else
   MODULE__SSL_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__ssl" >&5
-$as_echo "$py_cv_module__ssl" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__ssl" >&5
+printf "%s\n" "$py_cv_module__ssl" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _hashlib" >&5
-$as_echo_n "checking for stdlib extension module _hashlib... " >&6; }
-        if test "$py_cv_module__hashlib" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _hashlib" >&5
+printf %s "checking for stdlib extension module _hashlib... " >&6; }
+        if test "$py_cv_module__hashlib" != "n/a"
+then :
 
-    if true; then :
-  if test "$ac_cv_working_openssl_hashlib" = yes; then :
+    if true
+then :
+  if test "$ac_cv_working_openssl_hashlib" = yes
+then :
   py_cv_module__hashlib=yes
-else
+else $as_nop
   py_cv_module__hashlib=missing
 fi
-else
+else $as_nop
   py_cv_module__hashlib=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__HASHLIB_STATE=$py_cv_module__hashlib$as_nl"
-  if test "x$py_cv_module__hashlib" = xyes; then :
+  if test "x$py_cv_module__hashlib" = xyes
+then :
 
     as_fn_append MODULE_BLOCK "MODULE__HASHLIB_CFLAGS=$OPENSSL_INCLUDES$as_nl"
     as_fn_append MODULE_BLOCK "MODULE__HASHLIB_LDFLAGS=$OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH $LIBCRYPTO_LIBS$as_nl"
@@ -27811,31 +30089,35 @@ else
   MODULE__HASHLIB_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__hashlib" >&5
-$as_echo "$py_cv_module__hashlib" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__hashlib" >&5
+printf "%s\n" "$py_cv_module__hashlib" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testcapi" >&5
-$as_echo_n "checking for stdlib extension module _testcapi... " >&6; }
-        if test "$py_cv_module__testcapi" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testcapi" >&5
+printf %s "checking for stdlib extension module _testcapi... " >&6; }
+        if test "$py_cv_module__testcapi" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if true; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
   py_cv_module__testcapi=yes
-else
+else $as_nop
   py_cv_module__testcapi=missing
 fi
-else
+else $as_nop
   py_cv_module__testcapi=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TESTCAPI_STATE=$py_cv_module__testcapi$as_nl"
-  if test "x$py_cv_module__testcapi" = xyes; then :
-
+  if test "x$py_cv_module__testcapi" = xyes
+then :
 
 
+    as_fn_append MODULE_BLOCK "MODULE__TESTCAPI_LDFLAGS=$LIBATOMIC$as_nl"
 
 fi
    if test "$py_cv_module__testcapi" = yes; then
@@ -27846,27 +30128,31 @@ else
   MODULE__TESTCAPI_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testcapi" >&5
-$as_echo "$py_cv_module__testcapi" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testcapi" >&5
+printf "%s\n" "$py_cv_module__testcapi" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testclinic" >&5
-$as_echo_n "checking for stdlib extension module _testclinic... " >&6; }
-        if test "$py_cv_module__testclinic" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testclinic" >&5
+printf %s "checking for stdlib extension module _testclinic... " >&6; }
+        if test "$py_cv_module__testclinic" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if true; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
   py_cv_module__testclinic=yes
-else
+else $as_nop
   py_cv_module__testclinic=missing
 fi
-else
+else $as_nop
   py_cv_module__testclinic=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TESTCLINIC_STATE=$py_cv_module__testclinic$as_nl"
-  if test "x$py_cv_module__testclinic" = xyes; then :
+  if test "x$py_cv_module__testclinic" = xyes
+then :
 
 
 
@@ -27880,27 +30166,69 @@ else
   MODULE__TESTCLINIC_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testclinic" >&5
-$as_echo "$py_cv_module__testclinic" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testclinic" >&5
+printf "%s\n" "$py_cv_module__testclinic" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testinternalcapi" >&5
-$as_echo_n "checking for stdlib extension module _testinternalcapi... " >&6; }
-        if test "$py_cv_module__testinternalcapi" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testclinic_limited" >&5
+printf %s "checking for stdlib extension module _testclinic_limited... " >&6; }
+        if test "$py_cv_module__testclinic_limited" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if true; then :
-  py_cv_module__testinternalcapi=yes
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
+  py_cv_module__testclinic_limited=yes
+else $as_nop
+  py_cv_module__testclinic_limited=missing
+fi
+else $as_nop
+  py_cv_module__testclinic_limited=disabled
+fi
+
+fi
+  as_fn_append MODULE_BLOCK "MODULE__TESTCLINIC_LIMITED_STATE=$py_cv_module__testclinic_limited$as_nl"
+  if test "x$py_cv_module__testclinic_limited" = xyes
+then :
+
+
+
+
+fi
+   if test "$py_cv_module__testclinic_limited" = yes; then
+  MODULE__TESTCLINIC_LIMITED_TRUE=
+  MODULE__TESTCLINIC_LIMITED_FALSE='#'
 else
+  MODULE__TESTCLINIC_LIMITED_TRUE='#'
+  MODULE__TESTCLINIC_LIMITED_FALSE=
+fi
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testclinic_limited" >&5
+printf "%s\n" "$py_cv_module__testclinic_limited" >&6; }
+
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testinternalcapi" >&5
+printf %s "checking for stdlib extension module _testinternalcapi... " >&6; }
+        if test "$py_cv_module__testinternalcapi" != "n/a"
+then :
+
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
+  py_cv_module__testinternalcapi=yes
+else $as_nop
   py_cv_module__testinternalcapi=missing
 fi
-else
+else $as_nop
   py_cv_module__testinternalcapi=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TESTINTERNALCAPI_STATE=$py_cv_module__testinternalcapi$as_nl"
-  if test "x$py_cv_module__testinternalcapi" = xyes; then :
+  if test "x$py_cv_module__testinternalcapi" = xyes
+then :
 
 
 
@@ -27914,27 +30242,31 @@ else
   MODULE__TESTINTERNALCAPI_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testinternalcapi" >&5
-$as_echo "$py_cv_module__testinternalcapi" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testinternalcapi" >&5
+printf "%s\n" "$py_cv_module__testinternalcapi" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testbuffer" >&5
-$as_echo_n "checking for stdlib extension module _testbuffer... " >&6; }
-        if test "$py_cv_module__testbuffer" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testbuffer" >&5
+printf %s "checking for stdlib extension module _testbuffer... " >&6; }
+        if test "$py_cv_module__testbuffer" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if true; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
   py_cv_module__testbuffer=yes
-else
+else $as_nop
   py_cv_module__testbuffer=missing
 fi
-else
+else $as_nop
   py_cv_module__testbuffer=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TESTBUFFER_STATE=$py_cv_module__testbuffer$as_nl"
-  if test "x$py_cv_module__testbuffer" = xyes; then :
+  if test "x$py_cv_module__testbuffer" = xyes
+then :
 
 
 
@@ -27948,27 +30280,31 @@ else
   MODULE__TESTBUFFER_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testbuffer" >&5
-$as_echo "$py_cv_module__testbuffer" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testbuffer" >&5
+printf "%s\n" "$py_cv_module__testbuffer" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testimportmultiple" >&5
-$as_echo_n "checking for stdlib extension module _testimportmultiple... " >&6; }
-        if test "$py_cv_module__testimportmultiple" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testimportmultiple" >&5
+printf %s "checking for stdlib extension module _testimportmultiple... " >&6; }
+        if test "$py_cv_module__testimportmultiple" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if test "$ac_cv_func_dlopen" = yes; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if test "$ac_cv_func_dlopen" = yes
+then :
   py_cv_module__testimportmultiple=yes
-else
+else $as_nop
   py_cv_module__testimportmultiple=missing
 fi
-else
+else $as_nop
   py_cv_module__testimportmultiple=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TESTIMPORTMULTIPLE_STATE=$py_cv_module__testimportmultiple$as_nl"
-  if test "x$py_cv_module__testimportmultiple" = xyes; then :
+  if test "x$py_cv_module__testimportmultiple" = xyes
+then :
 
 
 
@@ -27982,27 +30318,31 @@ else
   MODULE__TESTIMPORTMULTIPLE_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testimportmultiple" >&5
-$as_echo "$py_cv_module__testimportmultiple" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testimportmultiple" >&5
+printf "%s\n" "$py_cv_module__testimportmultiple" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testmultiphase" >&5
-$as_echo_n "checking for stdlib extension module _testmultiphase... " >&6; }
-        if test "$py_cv_module__testmultiphase" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _testmultiphase" >&5
+printf %s "checking for stdlib extension module _testmultiphase... " >&6; }
+        if test "$py_cv_module__testmultiphase" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if test "$ac_cv_func_dlopen" = yes; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if test "$ac_cv_func_dlopen" = yes
+then :
   py_cv_module__testmultiphase=yes
-else
+else $as_nop
   py_cv_module__testmultiphase=missing
 fi
-else
+else $as_nop
   py_cv_module__testmultiphase=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__TESTMULTIPHASE_STATE=$py_cv_module__testmultiphase$as_nl"
-  if test "x$py_cv_module__testmultiphase" = xyes; then :
+  if test "x$py_cv_module__testmultiphase" = xyes
+then :
 
 
 
@@ -28016,27 +30356,31 @@ else
   MODULE__TESTMULTIPHASE_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testmultiphase" >&5
-$as_echo "$py_cv_module__testmultiphase" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__testmultiphase" >&5
+printf "%s\n" "$py_cv_module__testmultiphase" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module xxsubtype" >&5
-$as_echo_n "checking for stdlib extension module xxsubtype... " >&6; }
-        if test "$py_cv_module_xxsubtype" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module xxsubtype" >&5
+printf %s "checking for stdlib extension module xxsubtype... " >&6; }
+        if test "$py_cv_module_xxsubtype" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if true; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
   py_cv_module_xxsubtype=yes
-else
+else $as_nop
   py_cv_module_xxsubtype=missing
 fi
-else
+else $as_nop
   py_cv_module_xxsubtype=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_XXSUBTYPE_STATE=$py_cv_module_xxsubtype$as_nl"
-  if test "x$py_cv_module_xxsubtype" = xyes; then :
+  if test "x$py_cv_module_xxsubtype" = xyes
+then :
 
 
 
@@ -28050,27 +30394,31 @@ else
   MODULE_XXSUBTYPE_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_xxsubtype" >&5
-$as_echo "$py_cv_module_xxsubtype" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_xxsubtype" >&5
+printf "%s\n" "$py_cv_module_xxsubtype" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _xxtestfuzz" >&5
-$as_echo_n "checking for stdlib extension module _xxtestfuzz... " >&6; }
-        if test "$py_cv_module__xxtestfuzz" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _xxtestfuzz" >&5
+printf %s "checking for stdlib extension module _xxtestfuzz... " >&6; }
+        if test "$py_cv_module__xxtestfuzz" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if true; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if true
+then :
   py_cv_module__xxtestfuzz=yes
-else
+else $as_nop
   py_cv_module__xxtestfuzz=missing
 fi
-else
+else $as_nop
   py_cv_module__xxtestfuzz=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__XXTESTFUZZ_STATE=$py_cv_module__xxtestfuzz$as_nl"
-  if test "x$py_cv_module__xxtestfuzz" = xyes; then :
+  if test "x$py_cv_module__xxtestfuzz" = xyes
+then :
 
 
 
@@ -28084,27 +30432,31 @@ else
   MODULE__XXTESTFUZZ_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__xxtestfuzz" >&5
-$as_echo "$py_cv_module__xxtestfuzz" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__xxtestfuzz" >&5
+printf "%s\n" "$py_cv_module__xxtestfuzz" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _ctypes_test" >&5
-$as_echo_n "checking for stdlib extension module _ctypes_test... " >&6; }
-        if test "$py_cv_module__ctypes_test" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module _ctypes_test" >&5
+printf %s "checking for stdlib extension module _ctypes_test... " >&6; }
+        if test "$py_cv_module__ctypes_test" != "n/a"
+then :
 
-    if test "$TEST_MODULES" = yes; then :
-  if test "$have_libffi" = yes -a "$ac_cv_func_dlopen" = yes; then :
+    if test "$TEST_MODULES" = yes
+then :
+  if test "$have_libffi" = yes -a "$ac_cv_func_dlopen" = yes
+then :
   py_cv_module__ctypes_test=yes
-else
+else $as_nop
   py_cv_module__ctypes_test=missing
 fi
-else
+else $as_nop
   py_cv_module__ctypes_test=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE__CTYPES_TEST_STATE=$py_cv_module__ctypes_test$as_nl"
-  if test "x$py_cv_module__ctypes_test" = xyes; then :
+  if test "x$py_cv_module__ctypes_test" = xyes
+then :
 
 
     as_fn_append MODULE_BLOCK "MODULE__CTYPES_TEST_LDFLAGS=$LIBM$as_nl"
@@ -28118,28 +30470,32 @@ else
   MODULE__CTYPES_TEST_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__ctypes_test" >&5
-$as_echo "$py_cv_module__ctypes_test" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module__ctypes_test" >&5
+printf "%s\n" "$py_cv_module__ctypes_test" >&6; }
 
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module xxlimited" >&5
-$as_echo_n "checking for stdlib extension module xxlimited... " >&6; }
-        if test "$py_cv_module_xxlimited" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module xxlimited" >&5
+printf %s "checking for stdlib extension module xxlimited... " >&6; }
+        if test "$py_cv_module_xxlimited" != "n/a"
+then :
 
-    if test "$with_trace_refs" = "no"; then :
-  if test "$ac_cv_func_dlopen" = yes; then :
+    if true
+then :
+  if test "$ac_cv_func_dlopen" = yes
+then :
   py_cv_module_xxlimited=yes
-else
+else $as_nop
   py_cv_module_xxlimited=missing
 fi
-else
+else $as_nop
   py_cv_module_xxlimited=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_XXLIMITED_STATE=$py_cv_module_xxlimited$as_nl"
-  if test "x$py_cv_module_xxlimited" = xyes; then :
+  if test "x$py_cv_module_xxlimited" = xyes
+then :
 
 
 
@@ -28153,27 +30509,31 @@ else
   MODULE_XXLIMITED_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_xxlimited" >&5
-$as_echo "$py_cv_module_xxlimited" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_xxlimited" >&5
+printf "%s\n" "$py_cv_module_xxlimited" >&6; }
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module xxlimited_35" >&5
-$as_echo_n "checking for stdlib extension module xxlimited_35... " >&6; }
-        if test "$py_cv_module_xxlimited_35" != "n/a"; then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdlib extension module xxlimited_35" >&5
+printf %s "checking for stdlib extension module xxlimited_35... " >&6; }
+        if test "$py_cv_module_xxlimited_35" != "n/a"
+then :
 
-    if test "$with_trace_refs" = "no"; then :
-  if test "$ac_cv_func_dlopen" = yes; then :
+    if true
+then :
+  if test "$ac_cv_func_dlopen" = yes
+then :
   py_cv_module_xxlimited_35=yes
-else
+else $as_nop
   py_cv_module_xxlimited_35=missing
 fi
-else
+else $as_nop
   py_cv_module_xxlimited_35=disabled
 fi
 
 fi
   as_fn_append MODULE_BLOCK "MODULE_XXLIMITED_35_STATE=$py_cv_module_xxlimited_35$as_nl"
-  if test "x$py_cv_module_xxlimited_35" = xyes; then :
+  if test "x$py_cv_module_xxlimited_35" = xyes
+then :
 
 
 
@@ -28187,8 +30547,8 @@ else
   MODULE_XXLIMITED_35_FALSE=
 fi
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_xxlimited_35" >&5
-$as_echo "$py_cv_module_xxlimited_35" >&6; }
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $py_cv_module_xxlimited_35" >&5
+printf "%s\n" "$py_cv_module_xxlimited_35" >&6; }
 
 
 # substitute multiline block, must come after last PY_STDLIB_MOD()
@@ -28201,6 +30561,7 @@ ac_config_files="$ac_config_files Modules/Setup.bootstrap Modules/Setup.stdlib"
 
 ac_config_files="$ac_config_files Modules/ld_so_aix"
 
+# Generate files like pyconfig.h
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -28228,8 +30589,8 @@ _ACEOF
     case $ac_val in #(
     *${as_nl}*)
       case $ac_var in #(
-      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
-$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
       esac
       case $ac_var in #(
       _ | IFS | as_nl) ;; #(
@@ -28259,15 +30620,15 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
      /^ac_cv_env_/b end
      t clear
      :clear
-     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/
      t end
      s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
      :end' >>confcache
 if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
   if test -w "$cache_file"; then
     if test "x$cache_file" != "x/dev/null"; then
-      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
-$as_echo "$as_me: updating cache $cache_file" >&6;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+printf "%s\n" "$as_me: updating cache $cache_file" >&6;}
       if test ! -f "$cache_file" || test -h "$cache_file"; then
 	cat confcache >"$cache_file"
       else
@@ -28281,8 +30642,8 @@ $as_echo "$as_me: updating cache $cache_file" >&6;}
       fi
     fi
   else
-    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
-$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+printf "%s\n" "$as_me: not updating unwritable cache $cache_file" >&6;}
   fi
 fi
 rm -f confcache
@@ -28299,7 +30660,7 @@ U=
 for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
   # 1. Remove the extension, and $U if already installed.
   ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
-  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  ac_i=`printf "%s\n" "$ac_i" | sed "$ac_script"`
   # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
   #    will be set to the directory where LIBOBJS objects are built.
   as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
@@ -28403,10 +30764,6 @@ if test -z "${MODULE__POSIXSHMEM_TRUE}" && test -z "${MODULE__POSIXSHMEM_FALSE}"
   as_fn_error $? "conditional \"MODULE__POSIXSHMEM\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
-if test -z "${MODULE_AUDIOOP_TRUE}" && test -z "${MODULE_AUDIOOP_FALSE}"; then
-  as_fn_error $? "conditional \"MODULE_AUDIOOP\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${MODULE__STATISTICS_TRUE}" && test -z "${MODULE__STATISTICS_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__STATISTICS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -28439,10 +30796,6 @@ if test -z "${MODULE_GRP_TRUE}" && test -z "${MODULE_GRP_FALSE}"; then
   as_fn_error $? "conditional \"MODULE_GRP\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
-if test -z "${MODULE_OSSAUDIODEV_TRUE}" && test -z "${MODULE_OSSAUDIODEV_FALSE}"; then
-  as_fn_error $? "conditional \"MODULE_OSSAUDIODEV\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${MODULE_PWD_TRUE}" && test -z "${MODULE_PWD_FALSE}"; then
   as_fn_error $? "conditional \"MODULE_PWD\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -28455,10 +30808,6 @@ if test -z "${MODULE__SCPROXY_TRUE}" && test -z "${MODULE__SCPROXY_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__SCPROXY\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
-if test -z "${MODULE_SPWD_TRUE}" && test -z "${MODULE_SPWD_FALSE}"; then
-  as_fn_error $? "conditional \"MODULE_SPWD\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${MODULE_SYSLOG_TRUE}" && test -z "${MODULE_SYSLOG_FALSE}"; then
   as_fn_error $? "conditional \"MODULE_SYSLOG\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -28527,10 +30876,6 @@ if test -z "${MODULE__BLAKE2_TRUE}" && test -z "${MODULE__BLAKE2_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__BLAKE2\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
-if test -z "${MODULE__CRYPT_TRUE}" && test -z "${MODULE__CRYPT_FALSE}"; then
-  as_fn_error $? "conditional \"MODULE__CRYPT\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${MODULE__CTYPES_TRUE}" && test -z "${MODULE__CTYPES_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__CTYPES\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -28555,10 +30900,6 @@ if test -z "${MODULE__GDBM_TRUE}" && test -z "${MODULE__GDBM_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__GDBM\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
-if test -z "${MODULE_NIS_TRUE}" && test -z "${MODULE_NIS_FALSE}"; then
-  as_fn_error $? "conditional \"MODULE_NIS\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${MODULE_READLINE_TRUE}" && test -z "${MODULE_READLINE_FALSE}"; then
   as_fn_error $? "conditional \"MODULE_READLINE\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -28607,6 +30948,10 @@ if test -z "${MODULE__TESTCLINIC_TRUE}" && test -z "${MODULE__TESTCLINIC_FALSE}"
   as_fn_error $? "conditional \"MODULE__TESTCLINIC\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${MODULE__TESTCLINIC_LIMITED_TRUE}" && test -z "${MODULE__TESTCLINIC_LIMITED_FALSE}"; then
+  as_fn_error $? "conditional \"MODULE__TESTCLINIC_LIMITED\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${MODULE__TESTINTERNALCAPI_TRUE}" && test -z "${MODULE__TESTINTERNALCAPI_FALSE}"; then
   as_fn_error $? "conditional \"MODULE__TESTINTERNALCAPI\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -28648,8 +30993,8 @@ fi
 ac_write_fail=0
 ac_clean_files_save=$ac_clean_files
 ac_clean_files="$ac_clean_files $CONFIG_STATUS"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
-$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+printf "%s\n" "$as_me: creating $CONFIG_STATUS" >&6;}
 as_write_fail=0
 cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
 #! $SHELL
@@ -28672,14 +31017,16 @@ cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
 
 # Be more Bourne compatible
 DUALCASE=1; export DUALCASE # for MKS sh
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+as_nop=:
+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
   emulate sh
   NULLCMD=:
   # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
   # is contrary to our usage.  Disable this feature.
   alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
-else
+else $as_nop
   case `(set -o) 2>/dev/null` in #(
   *posix*) :
     set -o posix ;; #(
@@ -28689,46 +31036,46 @@ esac
 fi
 
 
+
+# Reset variables that may have inherited troublesome values from
+# the environment.
+
+# IFS needs to be set, to space, tab, and newline, in precisely that order.
+# (If _AS_PATH_WALK were called with IFS unset, it would have the
+# side effect of setting IFS to empty, thus disabling word splitting.)
+# Quoting is to prevent editors from complaining about space-tab.
 as_nl='
 '
 export as_nl
-# Printing a long string crashes Solaris 7 /usr/bin/printf.
-as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
-# Prefer a ksh shell builtin over an external printf program on Solaris,
-# but without wasting forks for bash or zsh.
-if test -z "$BASH_VERSION$ZSH_VERSION" \
-    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
-  as_echo='print -r --'
-  as_echo_n='print -rn --'
-elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
-  as_echo='printf %s\n'
-  as_echo_n='printf %s'
-else
-  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
-    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
-    as_echo_n='/usr/ucb/echo -n'
-  else
-    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
-    as_echo_n_body='eval
-      arg=$1;
-      case $arg in #(
-      *"$as_nl"*)
-	expr "X$arg" : "X\\(.*\\)$as_nl";
-	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
-      esac;
-      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
-    '
-    export as_echo_n_body
-    as_echo_n='sh -c $as_echo_n_body as_echo'
-  fi
-  export as_echo_body
-  as_echo='sh -c $as_echo_body as_echo'
-fi
+IFS=" ""	$as_nl"
+
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# Ensure predictable behavior from utilities with locale-dependent output.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# We cannot yet rely on "unset" to work, but we need these variables
+# to be unset--not just set to an empty or harmless value--now, to
+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  This construct
+# also avoids known problems related to "unset" and subshell syntax
+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).
+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH
+do eval test \${$as_var+y} \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+
+# Ensure that fds 0, 1, and 2 are open.
+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi
+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi
+if (exec 3>&2)            ; then :; else exec 2>/dev/null; fi
 
 # The user is always right.
-if test "${PATH_SEPARATOR+set}" != set; then
+if ${PATH_SEPARATOR+false} :; then
   PATH_SEPARATOR=:
   (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
     (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
@@ -28737,13 +31084,6 @@ if test "${PATH_SEPARATOR+set}" != set; then
 fi
 
 
-# IFS
-# We need space, tab and new line, in precisely that order.  Quoting is
-# there to prevent editors from complaining about space-tab.
-# (If _AS_PATH_WALK were called with IFS unset, it would disable word
-# splitting by setting IFS to empty value.)
-IFS=" ""	$as_nl"
-
 # Find who we are.  Look in the path if we contain no directory separator.
 as_myself=
 case $0 in #((
@@ -28752,8 +31092,12 @@ case $0 in #((
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break
   done
 IFS=$as_save_IFS
 
@@ -28765,30 +31109,10 @@ if test "x$as_myself" = x; then
   as_myself=$0
 fi
 if test ! -f "$as_myself"; then
-  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
   exit 1
 fi
 
-# Unset variables that we do not need and which cause bugs (e.g. in
-# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
-# suppresses any "Segmentation fault" message there.  '((' could
-# trigger a bug in pdksh 5.2.14.
-for as_var in BASH_ENV ENV MAIL MAILPATH
-do eval test x\${$as_var+set} = xset \
-  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
-done
-PS1='$ '
-PS2='> '
-PS4='+ '
-
-# NLS nuisances.
-LC_ALL=C
-export LC_ALL
-LANGUAGE=C
-export LANGUAGE
-
-# CDPATH.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
 
 # as_fn_error STATUS ERROR [LINENO LOG_FD]
@@ -28801,13 +31125,14 @@ as_fn_error ()
   as_status=$1; test $as_status -eq 0 && as_status=1
   if test "$4"; then
     as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
   fi
-  $as_echo "$as_me: error: $2" >&2
+  printf "%s\n" "$as_me: error: $2" >&2
   as_fn_exit $as_status
 } # as_fn_error
 
 
+
 # as_fn_set_status STATUS
 # -----------------------
 # Set $? to STATUS, without forking.
@@ -28834,18 +31159,20 @@ as_fn_unset ()
   { eval $1=; unset $1;}
 }
 as_unset=as_fn_unset
+
 # as_fn_append VAR VALUE
 # ----------------------
 # Append the text in VALUE to the end of the definition contained in VAR. Take
 # advantage of any shell optimizations that allow amortized linear growth over
 # repeated appends, instead of the typical quadratic growth present in naive
 # implementations.
-if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null
+then :
   eval 'as_fn_append ()
   {
     eval $1+=\$2
   }'
-else
+else $as_nop
   as_fn_append ()
   {
     eval $1=\$$1\$2
@@ -28857,12 +31184,13 @@ fi # as_fn_append
 # Perform arithmetic evaluation on the ARGs, and store the result in the
 # global $as_val. Take advantage of shells that can avoid forks. The arguments
 # must be portable across $(()) and expr.
-if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null
+then :
   eval 'as_fn_arith ()
   {
     as_val=$(( $* ))
   }'
-else
+else $as_nop
   as_fn_arith ()
   {
     as_val=`expr "$@" || test $? -eq 1`
@@ -28893,7 +31221,7 @@ as_me=`$as_basename -- "$0" ||
 $as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
 	 X"$0" : 'X\(//\)$' \| \
 	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X/"$0" |
+printf "%s\n" X/"$0" |
     sed '/^.*\/\([^/][^/]*\)\/*$/{
 	    s//\1/
 	    q
@@ -28915,6 +31243,10 @@ as_cr_Letters=$as_cr_letters$as_cr_LETTERS
 as_cr_digits='0123456789'
 as_cr_alnum=$as_cr_Letters$as_cr_digits
 
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
 ECHO_C= ECHO_N= ECHO_T=
 case `echo -n x` in #(((((
 -n*)
@@ -28928,6 +31260,12 @@ case `echo -n x` in #(((((
   ECHO_N='-n';;
 esac
 
+# For backward compatibility with old third-party macros, we provide
+# the shell variables $as_echo and $as_echo_n.  New code should use
+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
+as_echo='printf %s\n'
+as_echo_n='printf %s'
+
 rm -f conf$$ conf$$.exe conf$$.file
 if test -d conf$$.dir; then
   rm -f conf$$.dir/conf$$.file
@@ -28969,7 +31307,7 @@ as_fn_mkdir_p ()
     as_dirs=
     while :; do
       case $as_dir in #(
-      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
       *) as_qdir=$as_dir;;
       esac
       as_dirs="'$as_qdir' $as_dirs"
@@ -28978,7 +31316,7 @@ $as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
 	 X"$as_dir" : 'X\(//\)[^/]' \| \
 	 X"$as_dir" : 'X\(//\)$' \| \
 	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$as_dir" |
+printf "%s\n" X"$as_dir" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -29040,8 +31378,8 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by python $as_me 3.12, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+This file was extended by python $as_me 3.13, which was
+generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -29099,14 +31437,16 @@ $config_headers
 Report bugs to <https://github.com/python/cpython/issues/>."
 
 _ACEOF
+ac_cs_config=`printf "%s\n" "$ac_configure_args" | sed "$ac_safe_unquote"`
+ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"`
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
-ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-python config.status 3.12
-configured by $0, generated by GNU Autoconf 2.69,
+python config.status 3.13
+configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2021 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
@@ -29145,15 +31485,15 @@ do
   -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
     ac_cs_recheck=: ;;
   --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
-    $as_echo "$ac_cs_version"; exit ;;
+    printf "%s\n" "$ac_cs_version"; exit ;;
   --config | --confi | --conf | --con | --co | --c )
-    $as_echo "$ac_cs_config"; exit ;;
+    printf "%s\n" "$ac_cs_config"; exit ;;
   --debug | --debu | --deb | --de | --d | -d )
     debug=: ;;
   --file | --fil | --fi | --f )
     $ac_shift
     case $ac_optarg in
-    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
     '') as_fn_error $? "missing file argument" ;;
     esac
     as_fn_append CONFIG_FILES " '$ac_optarg'"
@@ -29161,7 +31501,7 @@ do
   --header | --heade | --head | --hea )
     $ac_shift
     case $ac_optarg in
-    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
     esac
     as_fn_append CONFIG_HEADERS " '$ac_optarg'"
     ac_need_defaults=false;;
@@ -29170,7 +31510,7 @@ do
     as_fn_error $? "ambiguous option: \`$1'
 Try \`$0 --help' for more information.";;
   --help | --hel | -h )
-    $as_echo "$ac_cs_usage"; exit ;;
+    printf "%s\n" "$ac_cs_usage"; exit ;;
   -q | -quiet | --quiet | --quie | --qui | --qu | --q \
   | -silent | --silent | --silen | --sile | --sil | --si | --s)
     ac_cs_silent=: ;;
@@ -29198,7 +31538,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
   set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
   shift
-  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  \printf "%s\n" "running CONFIG_SHELL=$SHELL \$*" >&6
   CONFIG_SHELL='$SHELL'
   export CONFIG_SHELL
   exec "\$@"
@@ -29212,7 +31552,7 @@ exec 5>>config.log
   sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
 ## Running $as_me. ##
 _ASBOX
-  $as_echo "$ac_log"
+  printf "%s\n" "$ac_log"
 } >&5
 
 _ACEOF
@@ -29248,8 +31588,8 @@ done
 # We use the long form for the default assignment because of an extremely
 # bizarre bug on SunOS 4.1.3.
 if $ac_need_defaults; then
-  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
-  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test ${CONFIG_FILES+y} || CONFIG_FILES=$config_files
+  test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers
 fi
 
 # Have a temporary directory for convenience.  Make it in the build tree
@@ -29585,7 +31925,7 @@ do
 	   esac ||
 	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
       esac
-      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
       as_fn_append ac_file_inputs " '$ac_f'"
     done
 
@@ -29593,17 +31933,17 @@ do
     # use $as_me), people would be surprised to read:
     #    /* config.h.  Generated by config.status.  */
     configure_input='Generated from '`
-	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	  printf "%s\n" "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
 	`' by configure.'
     if test x"$ac_file" != x-; then
       configure_input="$ac_file.  $configure_input"
-      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
-$as_echo "$as_me: creating $ac_file" >&6;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+printf "%s\n" "$as_me: creating $ac_file" >&6;}
     fi
     # Neutralize special characters interpreted by sed in replacement strings.
     case $configure_input in #(
     *\&* | *\|* | *\\* )
-       ac_sed_conf_input=`$as_echo "$configure_input" |
+       ac_sed_conf_input=`printf "%s\n" "$configure_input" |
        sed 's/[\\\\&|]/\\\\&/g'`;; #(
     *) ac_sed_conf_input=$configure_input;;
     esac
@@ -29620,7 +31960,7 @@ $as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
 	 X"$ac_file" : 'X\(//\)[^/]' \| \
 	 X"$ac_file" : 'X\(//\)$' \| \
 	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$ac_file" |
+printf "%s\n" X"$ac_file" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -29644,9 +31984,9 @@ $as_echo X"$ac_file" |
 case "$ac_dir" in
 .) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
 *)
-  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
   # A ".." for each directory in $ac_dir_suffix.
-  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
   case $ac_top_builddir_sub in
   "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
   *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
@@ -29708,8 +32048,8 @@ ac_sed_dataroot='
 case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
 *datarootdir*) ac_datarootdir_seen=yes;;
 *@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
-$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+printf "%s\n" "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
   ac_datarootdir_hack='
@@ -29753,9 +32093,9 @@ test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
   { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
   { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
       "$ac_tmp/out"`; test -z "$ac_out"; } &&
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&5
-$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+printf "%s\n" "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&2;}
 
   rm -f "$ac_tmp/stdin"
@@ -29771,20 +32111,20 @@ which seems to be undefined.  Please make sure it is defined" >&2;}
   #
   if test x"$ac_file" != x-; then
     {
-      $as_echo "/* $configure_input  */" \
+      printf "%s\n" "/* $configure_input  */" >&1 \
       && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
     } >"$ac_tmp/config.h" \
       || as_fn_error $? "could not create $ac_file" "$LINENO" 5
     if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
-      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
-$as_echo "$as_me: $ac_file is unchanged" >&6;}
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}
     else
       rm -f "$ac_file"
       mv "$ac_tmp/config.h" "$ac_file" \
 	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
     fi
   else
-    $as_echo "/* $configure_input  */" \
+    printf "%s\n" "/* $configure_input  */" >&1 \
       && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
       || as_fn_error $? "could not create -" "$LINENO" 5
   fi
@@ -29830,20 +32170,20 @@ if test "$no_create" != yes; then
   $ac_cs_success || as_fn_exit 1
 fi
 if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
-$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: creating Modules/Setup.local" >&5
-$as_echo "$as_me: creating Modules/Setup.local" >&6;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating Modules/Setup.local" >&5
+printf "%s\n" "$as_me: creating Modules/Setup.local" >&6;}
 if test ! -f Modules/Setup.local
 then
 	echo "# Edit this file for local setup changes" >Modules/Setup.local
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: creating Makefile" >&5
-$as_echo "$as_me: creating Makefile" >&6;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating Makefile" >&5
+printf "%s\n" "$as_me: creating Makefile" >&6;}
 $SHELL $srcdir/Modules/makesetup -c $srcdir/Modules/config.c.in \
 			-s Modules \
 			Modules/Setup.local Modules/Setup.stdlib Modules/Setup.bootstrap $srcdir/Modules/Setup
@@ -29854,32 +32194,39 @@ fi
 mv config.c Modules
 
 if test -z "$PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: pkg-config is missing. Some dependencies may not be detected correctly." >&5
-$as_echo "$as_me: WARNING: pkg-config is missing. Some dependencies may not be detected correctly." >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: pkg-config is missing. Some dependencies may not be detected correctly." >&5
+printf "%s\n" "$as_me: WARNING: pkg-config is missing. Some dependencies may not be detected correctly." >&2;}
 fi
 
 if test "$Py_OPT" = 'false' -a "$Py_DEBUG" != 'true'; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}:
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}:
 
 If you want a release build with all stable optimizations active (PGO, etc),
 please run ./configure --enable-optimizations
 " >&5
-$as_echo "$as_me:
+printf "%s\n" "$as_me:
 
 If you want a release build with all stable optimizations active (PGO, etc),
 please run ./configure --enable-optimizations
 " >&6;}
 fi
 
-if test "x$PY_SUPPORT_TIER" = x0; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING:
+if test "x$PY_SUPPORT_TIER" = x0
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING:
 
 Platform \"$host\" with compiler \"$ac_cv_cc_name\" is not supported by the
 CPython core team, see https://peps.python.org/pep-0011/ for more information.
 " >&5
-$as_echo "$as_me: WARNING:
+printf "%s\n" "$as_me: WARNING:
 
 Platform \"$host\" with compiler \"$ac_cv_cc_name\" is not supported by the
 CPython core team, see https://peps.python.org/pep-0011/ for more information.
 " >&2;}
 fi
+
+if test "$ac_cv_header_stdatomic_h" != "yes"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: Your compiler or platform does have a working C11 stdatomic.h. A future version of Python may require stdatomic.h." >&5
+printf "%s\n" "$as_me: Your compiler or platform does have a working C11 stdatomic.h. A future version of Python may require stdatomic.h." >&6;}
+fi
+
diff --git a/configure.ac b/configure.ac
index 115998e0753b26..c07d7ce6bdc918 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,14 +1,18 @@
-dnl ***************************************************
-dnl * Please run autoreconf -if to test your changes! *
-dnl ***************************************************
+dnl ************************************************************
+dnl * Please run autoreconf -ivf -Werror to test your changes! *
+dnl ************************************************************
 dnl
-dnl Python's configure.ac file requires autoconf 2.69 and autoconf-archive.
+dnl Python's configure script requires autoconf 2.71, autoconf-archive,
+dnl aclocal 1.16, and pkg-config.
+dnl
+dnl It is recommended to use the Tools/build/regen-configure.sh shell script
+dnl to regenerate the configure script.
 dnl
 
 # Set VERSION so we only need to edit in one place (i.e., here)
-m4_define(PYTHON_VERSION, 3.12)
+m4_define([PYTHON_VERSION], [3.13])
 
-AC_PREREQ([2.69])
+AC_PREREQ([2.71])
 
 AC_INIT([python],[PYTHON_VERSION],[https://github.com/python/cpython/issues/])
 
@@ -73,7 +77,7 @@ dnl PY_CHECK_LIB(LIBRARY, FUNCTION, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND], [O
 dnl Like AC_CHECK_LIB() but does not modify LIBS
 AC_DEFUN([PY_CHECK_LIB],
 [AS_VAR_COPY([py_check_lib_save_LIBS], [LIBS])]
-[AC_CHECK_LIB($1, $2, $3, $4, $5)]
+[AC_CHECK_LIB([$1], [$2], [$3], [$4], [$5])]
 [AS_VAR_COPY([LIBS], [py_check_lib_save_LIBS])]
 )
 
@@ -91,7 +95,7 @@ AC_DEFUN([PY_CHECK_EMSCRIPTEN_PORT], [
   AS_VAR_POPDEF([py_libs])
 ])
 
-AC_SUBST(BASECPPFLAGS)
+AC_SUBST([BASECPPFLAGS])
 if test "$srcdir" != . -a "$srcdir" != "$(pwd)"; then
     # If we're building out-of-tree, we need to make sure the following
     # resources get picked up before their $srcdir counterparts.
@@ -106,13 +110,13 @@ else
     BASECPPFLAGS=""
 fi
 
-AC_SUBST(GITVERSION)
-AC_SUBST(GITTAG)
-AC_SUBST(GITBRANCH)
+AC_SUBST([GITVERSION])
+AC_SUBST([GITTAG])
+AC_SUBST([GITBRANCH])
 
 if test -e $srcdir/.git
 then
-AC_CHECK_PROG(HAS_GIT, git, found, not-found)
+AC_CHECK_PROG([HAS_GIT], [git], [found], [not-found])
 else
 HAS_GIT=no-repository
 fi
@@ -131,8 +135,8 @@ AC_CONFIG_SRCDIR([Include/object.h])
 AC_CONFIG_HEADERS([pyconfig.h])
 
 AC_CANONICAL_HOST
-AC_SUBST(build)
-AC_SUBST(host)
+AC_SUBST([build])
+AC_SUBST([host])
 
 AS_VAR_IF([cross_compiling], [maybe],
  [AC_MSG_ERROR([Cross compiling required --host=HOST-TUPLE and --build=ARCH])]
@@ -141,8 +145,7 @@ AS_VAR_IF([cross_compiling], [maybe],
 # pybuilddir.txt will be created by --generate-posix-vars in the Makefile
 rm -f pybuilddir.txt
 
-AC_ARG_WITH(
-  [build-python],
+AC_ARG_WITH([build-python],
   [AS_HELP_STRING([--with-build-python=python]PYTHON_VERSION,
                   [path to build python binary for cross compiling (default: _bootstrap_python or python]PYTHON_VERSION[)])],
   [
@@ -202,9 +205,9 @@ AC_SUBST([FREEZE_MODULE_DEPS])
 AC_SUBST([PYTHON_FOR_BUILD_DEPS])
 
 AC_CHECK_PROGS([PYTHON_FOR_REGEN],
-  [python$PACKAGE_VERSION python3.12 python3.11 python3.10 python3 python],
+  [python$PACKAGE_VERSION python3.13 python3.12 python3.11 python3.10 python3 python],
   [python3])
-AC_SUBST(PYTHON_FOR_REGEN)
+AC_SUBST([PYTHON_FOR_REGEN])
 
 AC_MSG_CHECKING([Python for regen version])
 if command -v "$PYTHON_FOR_REGEN" >/dev/null 2>&1; then
@@ -243,38 +246,40 @@ grep -v 'define PACKAGE_' <confdefs.h >confdefs.h.new
 rm confdefs.h
 mv confdefs.h.new confdefs.h
 
-AC_SUBST(VERSION)
+AC_SUBST([VERSION])
 VERSION=PYTHON_VERSION
 
 # Version number of Python's own shared library file.
-AC_SUBST(SOVERSION)
+AC_SUBST([SOVERSION])
 SOVERSION=1.0
 
 # The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables
 # certain features on NetBSD, so we need _NETBSD_SOURCE to re-enable
 # them.
-AC_DEFINE(_NETBSD_SOURCE, 1, [Define on NetBSD to activate all library features])
+AC_DEFINE([_NETBSD_SOURCE], [1],
+          [Define on NetBSD to activate all library features])
 
 # The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables
 # certain features on FreeBSD, so we need __BSD_VISIBLE to re-enable
 # them.
-AC_DEFINE(__BSD_VISIBLE, 1, [Define on FreeBSD to activate all library features])
+AC_DEFINE([__BSD_VISIBLE], [1],
+          [Define on FreeBSD to activate all library features])
 
 # The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables
 # certain features on Mac OS X, so we need _DARWIN_C_SOURCE to re-enable
 # them.
-AC_DEFINE(_DARWIN_C_SOURCE, 1, [Define on Darwin to activate all library features])
+AC_DEFINE([_DARWIN_C_SOURCE], [1],
+          [Define on Darwin to activate all library features])
 
 
 define_xopen_source=yes
 
 # Arguments passed to configure.
-AC_SUBST(CONFIG_ARGS)
+AC_SUBST([CONFIG_ARGS])
 CONFIG_ARGS="$ac_configure_args"
 
 dnl Allow users to disable pkg-config or require pkg-config
-AC_ARG_WITH(
-  [pkg-config],
+AC_ARG_WITH([pkg-config],
   [AS_HELP_STRING([[--with-pkg-config=[yes|no|check]]],
                   [use pkg-config to detect build options (default is check)])],
   [],
@@ -303,7 +308,7 @@ if test "$with_pkg_config" = yes -a -z "$PKG_CONFIG"; then
 fi
 
 AC_MSG_CHECKING([for --enable-universalsdk])
-AC_ARG_ENABLE(universalsdk,
+AC_ARG_ENABLE([universalsdk],
 	AS_HELP_STRING([--enable-universalsdk@<:@=SDKDIR@:>@],
 	               [create a universal binary build.
 	                SDKDIR specifies which macOS SDK should be used to perform the build,
@@ -344,13 +349,13 @@ AC_ARG_ENABLE(universalsdk,
 ])
 if test -n "${UNIVERSALSDK}"
 then
-	AC_MSG_RESULT(${UNIVERSALSDK})
+	AC_MSG_RESULT([${UNIVERSALSDK}])
 else
-	AC_MSG_RESULT(no)
+	AC_MSG_RESULT([no])
 fi
-AC_SUBST(UNIVERSALSDK)
+AC_SUBST([UNIVERSALSDK])
 
-AC_SUBST(ARCH_RUN_32BIT)
+AC_SUBST([ARCH_RUN_32BIT])
 ARCH_RUN_32BIT=""
 
 # For backward compatibility reasons we prefer to select '32-bit' if available,
@@ -367,10 +372,10 @@ then
 	fi
 fi
 
-AC_SUBST(LIPO_32BIT_FLAGS)
-AC_SUBST(LIPO_INTEL64_FLAGS)
-AC_MSG_CHECKING(for --with-universal-archs)
-AC_ARG_WITH(universal-archs,
+AC_SUBST([LIPO_32BIT_FLAGS])
+AC_SUBST([LIPO_INTEL64_FLAGS])
+AC_MSG_CHECKING([for --with-universal-archs])
+AC_ARG_WITH([universal-archs],
     AS_HELP_STRING([--with-universal-archs=ARCH],
                    [specify the kind of macOS universal binary that should be created.
                     This option is only valid when --enable-universalsdk is set; options are:
@@ -383,12 +388,12 @@ AC_ARG_WITH(universal-archs,
 [])
 if test -n "${UNIVERSALSDK}"
 then
-	AC_MSG_RESULT(${UNIVERSAL_ARCHS})
+	AC_MSG_RESULT([${UNIVERSAL_ARCHS}])
 else
-	AC_MSG_RESULT(no)
+	AC_MSG_RESULT([no])
 fi
 
-AC_ARG_WITH(framework-name,
+AC_ARG_WITH([framework-name],
               AS_HELP_STRING([--with-framework-name=FRAMEWORK],
                              [specify the name for the python framework on macOS
                               only valid when --enable-framework is set. see Mac/README.rst
@@ -403,7 +408,7 @@ AC_ARG_WITH(framework-name,
     PYTHONFRAMEWORKIDENTIFIER=org.python.python
 ])
 dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output
-AC_ARG_ENABLE(framework,
+AC_ARG_ENABLE([framework],
               AS_HELP_STRING([--enable-framework@<:@=INSTALLDIR@:>@],
                              [create a Python.framework rather than a traditional Unix install.
                               optional INSTALLDIR specifies the installation path. see Mac/README.rst
@@ -486,10 +491,10 @@ AC_ARG_ENABLE(framework,
 
 		# Add files for Mac specific code to the list of output
 		# files:
-		AC_CONFIG_FILES(Mac/Makefile)
-		AC_CONFIG_FILES(Mac/PythonLauncher/Makefile)
-		AC_CONFIG_FILES(Mac/Resources/framework/Info.plist)
-		AC_CONFIG_FILES(Mac/Resources/app/Info.plist)
+		AC_CONFIG_FILES([Mac/Makefile])
+		AC_CONFIG_FILES([Mac/PythonLauncher/Makefile])
+		AC_CONFIG_FILES([Mac/Resources/framework/Info.plist])
+		AC_CONFIG_FILES([Mac/Resources/app/Info.plist])
 	esac
 	],[
 	PYTHONFRAMEWORK=
@@ -509,24 +514,25 @@ AC_ARG_ENABLE(framework,
 	enable_framework=
 
 ])
-AC_SUBST(PYTHONFRAMEWORK)
-AC_SUBST(PYTHONFRAMEWORKIDENTIFIER)
-AC_SUBST(PYTHONFRAMEWORKDIR)
-AC_SUBST(PYTHONFRAMEWORKPREFIX)
-AC_SUBST(PYTHONFRAMEWORKINSTALLDIR)
-AC_SUBST(FRAMEWORKINSTALLFIRST)
-AC_SUBST(FRAMEWORKINSTALLLAST)
-AC_SUBST(FRAMEWORKALTINSTALLFIRST)
-AC_SUBST(FRAMEWORKALTINSTALLLAST)
-AC_SUBST(FRAMEWORKPYTHONW)
-AC_SUBST(FRAMEWORKUNIXTOOLSPREFIX)
-AC_SUBST(FRAMEWORKINSTALLAPPSPREFIX)
+AC_SUBST([PYTHONFRAMEWORK])
+AC_SUBST([PYTHONFRAMEWORKIDENTIFIER])
+AC_SUBST([PYTHONFRAMEWORKDIR])
+AC_SUBST([PYTHONFRAMEWORKPREFIX])
+AC_SUBST([PYTHONFRAMEWORKINSTALLDIR])
+AC_SUBST([FRAMEWORKINSTALLFIRST])
+AC_SUBST([FRAMEWORKINSTALLLAST])
+AC_SUBST([FRAMEWORKALTINSTALLFIRST])
+AC_SUBST([FRAMEWORKALTINSTALLLAST])
+AC_SUBST([FRAMEWORKPYTHONW])
+AC_SUBST([FRAMEWORKUNIXTOOLSPREFIX])
+AC_SUBST([FRAMEWORKINSTALLAPPSPREFIX])
 
-AC_DEFINE_UNQUOTED(_PYTHONFRAMEWORK, "${PYTHONFRAMEWORK}", [framework name])
+AC_DEFINE_UNQUOTED([_PYTHONFRAMEWORK], ["${PYTHONFRAMEWORK}"],
+                   [framework name])
 
 # Set name for machine-dependent library files
 AC_ARG_VAR([MACHDEP], [name for machine-dependent library files])
-AC_MSG_CHECKING(MACHDEP)
+AC_MSG_CHECKING([MACHDEP])
 if test -z "$MACHDEP"
 then
     # avoid using uname for cross builds
@@ -581,10 +587,18 @@ then
 	darwin*) MACHDEP="darwin";;
 	'')	MACHDEP="unknown";;
     esac
+
+    if test "$ac_sys_system" = "SunOS"; then
+	# For Solaris, there isn't an OS version specific macro defined
+	# in most compilers, so we define one here.
+	SUNOS_VERSION=`echo $ac_sys_release | sed -e 's!\.\([0-9]\)$!.0\1!g' | tr -d '.'`
+	AC_DEFINE_UNQUOTED([Py_SUNOS_VERSION], [$SUNOS_VERSION],
+	                   [The version of SunOS/Solaris as reported by `uname -r' without the dot.])
+    fi
 fi
-AC_MSG_RESULT("$MACHDEP")
+AC_MSG_RESULT(["$MACHDEP"])
 
-AC_SUBST(_PYTHON_HOST_PLATFORM)
+AC_SUBST([_PYTHON_HOST_PLATFORM])
 if test "$cross_compiling" = yes; then
 	case "$host" in
 	*-*-linux*)
@@ -634,13 +648,15 @@ case $ac_sys_system/$ac_sys_release in
     # OpenBSD undoes our definition of __BSD_VISIBLE if _XOPEN_SOURCE is
     # also defined. This can be overridden by defining _BSD_SOURCE
     # As this has a different meaning on Linux, only define it on OpenBSD
-    AC_DEFINE(_BSD_SOURCE, 1, [Define on OpenBSD to activate all library features])
+    AC_DEFINE([_BSD_SOURCE], [1],
+              [Define on OpenBSD to activate all library features])
     ;;
   OpenBSD/*)
     # OpenBSD undoes our definition of __BSD_VISIBLE if _XOPEN_SOURCE is
     # also defined. This can be overridden by defining _BSD_SOURCE
     # As this has a different meaning on Linux, only define it on OpenBSD
-    AC_DEFINE(_BSD_SOURCE, 1, [Define on OpenBSD to activate all library features])
+    AC_DEFINE([_BSD_SOURCE], [1],
+              [Define on OpenBSD to activate all library features])
     ;;
   # Defining _XOPEN_SOURCE on NetBSD version prior to the introduction of
   # _NETBSD_SOURCE disables certain features (eg. setgroups). Reported by
@@ -696,17 +712,18 @@ esac
 if test $define_xopen_source = yes
 then
   # X/Open 7, incorporating POSIX.1-2008
-  AC_DEFINE(_XOPEN_SOURCE, 700,
-            Define to the level of X/Open that your system supports)
+  AC_DEFINE([_XOPEN_SOURCE], [700],
+            [Define to the level of X/Open that your system supports])
 
   # On Tru64 Unix 4.0F, defining _XOPEN_SOURCE also requires
   # definition of _XOPEN_SOURCE_EXTENDED and _POSIX_C_SOURCE, or else
   # several APIs are not declared. Since this is also needed in some
   # cases for HP-UX, we define it globally.
-  AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1,
-   	    Define to activate Unix95-and-earlier features)
+  AC_DEFINE([_XOPEN_SOURCE_EXTENDED], [1],
+            [Define to activate Unix95-and-earlier features])
 
-  AC_DEFINE(_POSIX_C_SOURCE, 200809L, Define to activate features from IEEE Stds 1003.1-2008)
+  AC_DEFINE([_POSIX_C_SOURCE], [200809L],
+            [Define to activate features from IEEE Stds 1003.1-2008])
 fi
 
 # On HP-UX mbstate_t requires _INCLUDE__STDC_A1_SOURCE
@@ -719,14 +736,15 @@ esac
 
 if test $define_stdc_a1 = yes
 then
-  AC_DEFINE(_INCLUDE__STDC_A1_SOURCE, 1, Define to include mbstate_t for mbrtowc)
+  AC_DEFINE([_INCLUDE__STDC_A1_SOURCE], [1],
+            [Define to include mbstate_t for mbrtowc])
 fi
 
 # Record the configure-time value of MACOSX_DEPLOYMENT_TARGET,
 # it may influence the way we can build extensions, so distutils
 # needs to check it
-AC_SUBST(CONFIGURE_MACOSX_DEPLOYMENT_TARGET)
-AC_SUBST(EXPORT_MACOSX_DEPLOYMENT_TARGET)
+AC_SUBST([CONFIGURE_MACOSX_DEPLOYMENT_TARGET])
+AC_SUBST([EXPORT_MACOSX_DEPLOYMENT_TARGET])
 CONFIGURE_MACOSX_DEPLOYMENT_TARGET=
 EXPORT_MACOSX_DEPLOYMENT_TARGET='#'
 
@@ -873,16 +891,16 @@ rm -f conftest.c conftest.out
 # _POSIX_SOURCE, _POSIX_1_SOURCE, and more
 AC_USE_SYSTEM_EXTENSIONS
 
-AC_SUBST(CXX)
+AC_SUBST([CXX])
 
 preset_cxx="$CXX"
 if test -z "$CXX"
 then
         case "$CC" in
-        gcc)    AC_PATH_TOOL(CXX, [g++], [g++], [notfound]) ;;
-        cc)     AC_PATH_TOOL(CXX, [c++], [c++], [notfound]) ;;
-        clang|*/clang)     AC_PATH_TOOL(CXX, [clang++], [clang++], [notfound]) ;;
-        icc|*/icc)         AC_PATH_TOOL(CXX, [icpc], [icpc], [notfound]) ;;
+        gcc)    AC_PATH_TOOL([CXX], [g++], [g++], [notfound]) ;;
+        cc)     AC_PATH_TOOL([CXX], [c++], [c++], [notfound]) ;;
+        clang|*/clang)     AC_PATH_TOOL([CXX], [clang++], [clang++], [notfound]) ;;
+        icc|*/icc)         AC_PATH_TOOL([CXX], [icpc], [icpc], [notfound]) ;;
         esac
 	if test "$CXX" = "notfound"
 	then
@@ -891,7 +909,7 @@ then
 fi
 if test -z "$CXX"
 then
-	AC_CHECK_TOOLS(CXX, $CCC c++ g++ gcc CC cxx cc++ cl, notfound)
+	AC_CHECK_TOOLS([CXX], [$CCC c++ g++ gcc CC cxx cc++ cl], [notfound])
 	if test "$CXX" = "notfound"
 	then
 		CXX=""
@@ -908,194 +926,14 @@ fi
 
 
 AC_MSG_CHECKING([for the platform triplet based on compiler characteristics])
-cat > conftest.c <<EOF
-#undef bfin
-#undef cris
-#undef fr30
-#undef linux
-#undef hppa
-#undef hpux
-#undef i386
-#undef mips
-#undef powerpc
-#undef sparc
-#undef unix
-#if defined(__ANDROID__)
-    # Android is not a multiarch system.
-#elif defined(__linux__)
-# if defined(__x86_64__) && defined(__LP64__)
-        x86_64-linux-gnu
-# elif defined(__x86_64__) && defined(__ILP32__)
-        x86_64-linux-gnux32
-# elif defined(__i386__)
-        i386-linux-gnu
-# elif defined(__aarch64__) && defined(__AARCH64EL__)
-#  if defined(__ILP32__)
-        aarch64_ilp32-linux-gnu
-#  else
-        aarch64-linux-gnu
-#  endif
-# elif defined(__aarch64__) && defined(__AARCH64EB__)
-#  if defined(__ILP32__)
-        aarch64_be_ilp32-linux-gnu
-#  else
-        aarch64_be-linux-gnu
-#  endif
-# elif defined(__alpha__)
-        alpha-linux-gnu
-# elif defined(__ARM_EABI__) && defined(__ARM_PCS_VFP)
-#  if defined(__ARMEL__)
-        arm-linux-gnueabihf
-#  else
-        armeb-linux-gnueabihf
-#  endif
-# elif defined(__ARM_EABI__) && !defined(__ARM_PCS_VFP)
-#  if defined(__ARMEL__)
-        arm-linux-gnueabi
-#  else
-        armeb-linux-gnueabi
-#  endif
-# elif defined(__hppa__)
-        hppa-linux-gnu
-# elif defined(__ia64__)
-        ia64-linux-gnu
-# elif defined(__loongarch__)
-#  if defined(__loongarch_lp64)
-#   if defined(__loongarch_soft_float)
-        loongarch64-linux-gnusf
-#   elif defined(__loongarch_single_float)
-        loongarch64-linux-gnuf32
-#   elif defined(__loongarch_double_float)
-        loongarch64-linux-gnu
-#   else
-#    error unknown platform triplet
-#   endif
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__m68k__) && !defined(__mcoldfire__)
-        m68k-linux-gnu
-# elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6) && defined(_MIPSEL)
-#  if _MIPS_SIM == _ABIO32
-        mipsisa32r6el-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mipsisa64r6el-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mipsisa64r6el-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6)
-#  if _MIPS_SIM == _ABIO32
-        mipsisa32r6-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mipsisa64r6-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mipsisa64r6-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__mips_hard_float) && defined(_MIPSEL)
-#  if _MIPS_SIM == _ABIO32
-        mipsel-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mips64el-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mips64el-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__mips_hard_float)
-#  if _MIPS_SIM == _ABIO32
-        mips-linux-gnu
-#  elif _MIPS_SIM == _ABIN32
-        mips64-linux-gnuabin32
-#  elif _MIPS_SIM == _ABI64
-        mips64-linux-gnuabi64
-#  else
-#   error unknown platform triplet
-#  endif
-# elif defined(__or1k__)
-        or1k-linux-gnu
-# elif defined(__powerpc__) && defined(__SPE__)
-        powerpc-linux-gnuspe
-# elif defined(__powerpc64__)
-#  if defined(__LITTLE_ENDIAN__)
-        powerpc64le-linux-gnu
-#  else
-        powerpc64-linux-gnu
-#  endif
-# elif defined(__powerpc__)
-        powerpc-linux-gnu
-# elif defined(__s390x__)
-        s390x-linux-gnu
-# elif defined(__s390__)
-        s390-linux-gnu
-# elif defined(__sh__) && defined(__LITTLE_ENDIAN__)
-        sh4-linux-gnu
-# elif defined(__sparc__) && defined(__arch64__)
-        sparc64-linux-gnu
-# elif defined(__sparc__)
-        sparc-linux-gnu
-# elif defined(__riscv)
-#  if __riscv_xlen == 32
-        riscv32-linux-gnu
-#  elif __riscv_xlen == 64
-        riscv64-linux-gnu
-#  else
-#   error unknown platform triplet
-#  endif
-# else
-#   error unknown platform triplet
-# endif
-#elif defined(__FreeBSD_kernel__)
-# if defined(__LP64__)
-        x86_64-kfreebsd-gnu
-# elif defined(__i386__)
-        i386-kfreebsd-gnu
-# else
-#   error unknown platform triplet
-# endif
-#elif defined(__gnu_hurd__)
-        i386-gnu
-#elif defined(__APPLE__)
-        darwin
-#elif defined(__VXWORKS__)
-        vxworks
-#elif defined(__wasm32__)
-#  if defined(__EMSCRIPTEN__)
-	wasm32-emscripten
-#  elif defined(__wasi__)
-	wasm32-wasi
-#  else
-#    error unknown wasm32 platform
-#  endif
-#elif defined(__wasm64__)
-#  if defined(__EMSCRIPTEN__)
-	wasm64-emscripten
-#  elif defined(__wasi__)
-	wasm64-wasi
-#  else
-#    error unknown wasm64 platform
-#  endif
-#else
-# error unknown platform triplet
-#endif
-
-EOF
-
-if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
-  PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d ' 	'`
-  case "$build_os" in
-  linux-musl*)
-    PLATFORM_TRIPLET=`echo "$PLATFORM_TRIPLET" | sed 's/linux-gnu/linux-musl/'`
-    ;;
-  esac
+if $CPP $CPPFLAGS $srcdir/Misc/platform_triplet.c >conftest.out 2>/dev/null; then
+  PLATFORM_TRIPLET=`grep '^PLATFORM_TRIPLET=' conftest.out | tr -d ' 	'`
+  PLATFORM_TRIPLET="${PLATFORM_TRIPLET@%:@PLATFORM_TRIPLET=}"
   AC_MSG_RESULT([$PLATFORM_TRIPLET])
 else
   AC_MSG_RESULT([none])
 fi
-rm -f conftest.c conftest.out
+rm -f conftest.out
 
 AC_MSG_CHECKING([for multiarch])
 AS_CASE([$ac_sys_system],
@@ -1113,12 +951,12 @@ if test x$PLATFORM_TRIPLET != x && test x$MULTIARCH != x; then
 elif test x$PLATFORM_TRIPLET != x && test x$MULTIARCH = x; then
   MULTIARCH=$PLATFORM_TRIPLET
 fi
-AC_SUBST(PLATFORM_TRIPLET)
+AC_SUBST([PLATFORM_TRIPLET])
 
 if test x$MULTIARCH != x; then
   MULTIARCH_CPPFLAGS="-DMULTIARCH=\\\"$MULTIARCH\\\""
 fi
-AC_SUBST(MULTIARCH_CPPFLAGS)
+AC_SUBST([MULTIARCH_CPPFLAGS])
 
 dnl Support tiers according to https://peps.python.org/pep-0011/
 dnl
@@ -1166,7 +1004,7 @@ AC_CACHE_CHECK([for -Wl,--no-as-needed], [ac_cv_wl_no_as_needed], [
      ac_cv_wl_no_as_needed=no])
   LDFLAGS="$save_LDFLAGS"
 ])
-AC_SUBST(NO_AS_NEEDED)
+AC_SUBST([NO_AS_NEEDED])
 
 AC_MSG_CHECKING([for the Android API level])
 cat > conftest.c <<EOF
@@ -1185,7 +1023,8 @@ if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then
   if test -z "$ANDROID_API_LEVEL"; then
     AC_MSG_ERROR([Fatal: you must define __ANDROID_API__])
   fi
-  AC_DEFINE_UNQUOTED(ANDROID_API_LEVEL, $ANDROID_API_LEVEL, [The Android API level.])
+  AC_DEFINE_UNQUOTED([ANDROID_API_LEVEL], [$ANDROID_API_LEVEL],
+                     [The Android API level.])
 
   AC_MSG_CHECKING([for the Android arm ABI])
   AC_MSG_RESULT([$_arm_arch])
@@ -1258,7 +1097,7 @@ AC_ARG_ENABLE([wasm-pthreads],
 [
   AS_CASE([$ac_sys_system],
     [Emscripten], [],
-    [WASI], [AC_MSG_ERROR([WASI threading is not implemented yet.])],
+    [WASI], [],
     [AC_MSG_ERROR([--enable-wasm-pthreads only applies to Emscripten and WASI])]
   )
 ], [
@@ -1287,18 +1126,18 @@ AC_MSG_RESULT([$EXEEXT])
 
 # Test whether we're running on a non-case-sensitive system, in which
 # case we give a warning if no ext is given
-AC_SUBST(BUILDEXEEXT)
-AC_MSG_CHECKING(for case-insensitive build directory)
+AC_SUBST([BUILDEXEEXT])
+AC_MSG_CHECKING([for case-insensitive build directory])
 if test ! -d CaseSensitiveTestDir; then
 mkdir CaseSensitiveTestDir
 fi
 
 if test -d casesensitivetestdir && test -z "$EXEEXT"
 then
-    AC_MSG_RESULT(yes)
+    AC_MSG_RESULT([yes])
     BUILDEXEEXT=.exe
 else
-	AC_MSG_RESULT(no)
+	AC_MSG_RESULT([no])
 	BUILDEXEEXT=$EXEEXT
 fi
 rmdir CaseSensitiveTestDir
@@ -1310,13 +1149,13 @@ hp*|HP*)
     esac;;
 esac
 
-AC_SUBST(LIBRARY)
-AC_MSG_CHECKING(LIBRARY)
+AC_SUBST([LIBRARY])
+AC_MSG_CHECKING([LIBRARY])
 if test -z "$LIBRARY"
 then
 	LIBRARY='libpython$(VERSION)$(ABIFLAGS).a'
 fi
-AC_MSG_RESULT($LIBRARY)
+AC_MSG_RESULT([$LIBRARY])
 
 # LDLIBRARY is the name of the library to link against (as opposed to the
 # name of the library into which to insert object files). BLDLIBRARY is also
@@ -1334,14 +1173,14 @@ AC_MSG_RESULT($LIBRARY)
 #
 # LDVERSION is the shared library version number, normally the Python version
 # with the ABI build flags appended.
-AC_SUBST(LDLIBRARY)
-AC_SUBST(DLLLIBRARY)
-AC_SUBST(BLDLIBRARY)
-AC_SUBST(PY3LIBRARY)
-AC_SUBST(LDLIBRARYDIR)
-AC_SUBST(INSTSONAME)
-AC_SUBST(RUNSHARED)
-AC_SUBST(LDVERSION)
+AC_SUBST([LDLIBRARY])
+AC_SUBST([DLLLIBRARY])
+AC_SUBST([BLDLIBRARY])
+AC_SUBST([PY3LIBRARY])
+AC_SUBST([LDLIBRARYDIR])
+AC_SUBST([INSTSONAME])
+AC_SUBST([RUNSHARED])
+AC_SUBST([LDVERSION])
 LDLIBRARY="$LIBRARY"
 BLDLIBRARY='$(LDLIBRARY)'
 INSTSONAME='$(LDLIBRARY)'
@@ -1354,8 +1193,8 @@ LDVERSION="$VERSION"
 # If CXX is set, and if it is needed to link a main function that was
 # compiled with CXX, LINKCC is CXX instead. Always using CXX is undesirable:
 # python might then depend on the C++ runtime
-AC_SUBST(LINKCC)
-AC_MSG_CHECKING(LINKCC)
+AC_SUBST([LINKCC])
+AC_MSG_CHECKING([LINKCC])
 if test -z "$LINKCC"
 then
 	LINKCC='$(PURIFY) $(CC)'
@@ -1366,30 +1205,30 @@ then
 	   LINKCC=qcc;;
 	esac
 fi
-AC_MSG_RESULT($LINKCC)
+AC_MSG_RESULT([$LINKCC])
 
 # EXPORTSYMS holds the list of exported symbols for AIX.
 # EXPORTSFROM holds the module name exporting symbols on AIX.
 EXPORTSYMS=
 EXPORTSFROM=
-AC_SUBST(EXPORTSYMS)
-AC_SUBST(EXPORTSFROM)
-AC_MSG_CHECKING(EXPORTSYMS)
+AC_SUBST([EXPORTSYMS])
+AC_SUBST([EXPORTSFROM])
+AC_MSG_CHECKING([EXPORTSYMS])
 case $ac_sys_system in
 AIX*)
 	EXPORTSYMS="Modules/python.exp"
 	EXPORTSFROM=. # the main executable
 	;;
 esac
-AC_MSG_RESULT($EXPORTSYMS)
+AC_MSG_RESULT([$EXPORTSYMS])
 
 # GNULD is set to "yes" if the GNU linker is used.  If this goes wrong
 # make sure we default having it set to "no": this is used by
 # distutils.unixccompiler to know if it should add --enable-new-dtags
 # to linker command lines, and failing to detect GNU ld simply results
 # in the same behaviour as before.
-AC_SUBST(GNULD)
-AC_MSG_CHECKING(for GNU ld)
+AC_SUBST([GNULD])
+AC_MSG_CHECKING([for GNU ld])
 ac_prog=ld
 if test "$GCC" = yes; then
        ac_prog=`$CC -print-prog-name=ld`
@@ -1400,10 +1239,10 @@ case `"$ac_prog" -V 2>&1 < /dev/null` in
       *)
           GNULD=no;;
 esac
-AC_MSG_RESULT($GNULD)
+AC_MSG_RESULT([$GNULD])
 
-AC_MSG_CHECKING(for --enable-shared)
-AC_ARG_ENABLE(shared,
+AC_MSG_CHECKING([for --enable-shared])
+AC_ARG_ENABLE([shared],
               AS_HELP_STRING([--enable-shared], [enable building a shared Python library (default is no)]))
 
 if test -z "$enable_shared"
@@ -1415,27 +1254,27 @@ then
     enable_shared="no";;
   esac
 fi
-AC_MSG_RESULT($enable_shared)
+AC_MSG_RESULT([$enable_shared])
 
 # --with-static-libpython
 STATIC_LIBPYTHON=1
-AC_MSG_CHECKING(for --with-static-libpython)
-AC_ARG_WITH(static-libpython,
+AC_MSG_CHECKING([for --with-static-libpython])
+AC_ARG_WITH([static-libpython],
   AS_HELP_STRING([--without-static-libpython],
                  [do not build libpythonMAJOR.MINOR.a and do not install python.o (default is yes)]),
 [
 if test "$withval" = no
 then
-  AC_MSG_RESULT(no);
+  AC_MSG_RESULT([no]);
   STATIC_LIBPYTHON=0
 else
-  AC_MSG_RESULT(yes);
+  AC_MSG_RESULT([yes]);
 fi],
-[AC_MSG_RESULT(yes)])
-AC_SUBST(STATIC_LIBPYTHON)
+[AC_MSG_RESULT([yes])])
+AC_SUBST([STATIC_LIBPYTHON])
 
-AC_MSG_CHECKING(for --enable-profiling)
-AC_ARG_ENABLE(profiling,
+AC_MSG_CHECKING([for --enable-profiling])
+AC_ARG_ENABLE([profiling],
               AS_HELP_STRING([--enable-profiling], [enable C-level code profiling with gprof (default is no)]))
 if test "x$enable_profiling" = xyes; then
   ac_save_cc="$CC"
@@ -1447,14 +1286,14 @@ if test "x$enable_profiling" = xyes; then
 else
   enable_profiling=no
 fi
-AC_MSG_RESULT($enable_profiling)
+AC_MSG_RESULT([$enable_profiling])
 
 if test "x$enable_profiling" = xyes; then
   BASECFLAGS="-pg $BASECFLAGS"
   LDFLAGS="-pg $LDFLAGS"
 fi
 
-AC_MSG_CHECKING(LDLIBRARY)
+AC_MSG_CHECKING([LDLIBRARY])
 
 # MacOSX framework builds need more magic. LDLIBRARY is the dynamic
 # library that we build, but we do not want to link against it (we
@@ -1474,7 +1313,8 @@ fi
 # Other platforms follow
 if test $enable_shared = "yes"; then
   PY_ENABLE_SHARED=1
-  AC_DEFINE(Py_ENABLE_SHARED, 1, [Defined if Python is built as a shared library.])
+  AC_DEFINE([Py_ENABLE_SHARED], [1],
+            [Defined if Python is built as a shared library.])
   case $ac_sys_system in
     CYGWIN*)
           LDLIBRARY='libpython$(LDVERSION).dll.a'
@@ -1590,7 +1430,7 @@ if test -n "$HOSTRUNNER"; then
   PYTHON_FOR_BUILD="_PYTHON_HOSTRUNNER='$HOSTRUNNER' $PYTHON_FOR_BUILD"
 fi
 
-AC_MSG_RESULT($LDLIBRARY)
+AC_MSG_RESULT([$LDLIBRARY])
 
 # LIBRARY_DEPS, LINK_PYTHON_OBJS and LINK_PYTHON_DEPS variable
 AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
@@ -1615,16 +1455,16 @@ else
     # Link Python program to object files
     LINK_PYTHON_OBJS='$(LIBRARY_OBJS)'
 fi
-AC_SUBST(LIBRARY_DEPS)
-AC_SUBST(LINK_PYTHON_DEPS)
-AC_SUBST(LINK_PYTHON_OBJS)
+AC_SUBST([LIBRARY_DEPS])
+AC_SUBST([LINK_PYTHON_DEPS])
+AC_SUBST([LINK_PYTHON_OBJS])
 
 # ar program
-AC_SUBST(AR)
-AC_CHECK_TOOLS(AR, ar aal, ar)
+AC_SUBST([AR])
+AC_CHECK_TOOLS([AR], [ar aal], [ar])
 
 # tweak ARFLAGS only if the user didn't set it on the command line
-AC_SUBST(ARFLAGS)
+AC_SUBST([ARFLAGS])
 if test -z "$ARFLAGS"
 then
         ARFLAGS="rcs"
@@ -1642,7 +1482,7 @@ AC_PROG_INSTALL
 AC_PROG_MKDIR_P
 
 # Not every filesystem supports hard links
-AC_SUBST(LN)
+AC_SUBST([LN])
 if test -z "$LN" ; then
 	case $ac_sys_system in
 		CYGWIN*) LN="ln -s";;
@@ -1651,38 +1491,55 @@ if test -z "$LN" ; then
 fi
 
 # For calculating the .so ABI tag.
-AC_SUBST(ABIFLAGS)
+AC_SUBST([ABIFLAGS])
 ABIFLAGS=""
 
+# Check for --disable-gil
+# --disable-gil
+AC_MSG_CHECKING([for --disable-gil])
+AC_ARG_ENABLE([gil],
+  [AS_HELP_STRING([--disable-gil], [enable experimental support for running without the GIL (default is no)])],
+  [AS_VAR_IF([enable_gil], [yes], [disable_gil=no], [disable_gil=yes])], [disable_gil=no]
+)
+AC_MSG_RESULT([$disable_gil])
+
+if test "$disable_gil" = "yes"
+then
+  AC_DEFINE([Py_GIL_DISABLED], [1],
+            [Define if you want to disable the GIL])
+  # Add "t" for "threaded"
+  ABIFLAGS="${ABIFLAGS}t"
+fi
+
 # Check for --with-pydebug
-AC_MSG_CHECKING(for --with-pydebug)
-AC_ARG_WITH(pydebug,
-            AS_HELP_STRING([--with-pydebug], [build with Py_DEBUG defined (default is no)]),
+AC_MSG_CHECKING([for --with-pydebug])
+AC_ARG_WITH([pydebug],
+  [AS_HELP_STRING([--with-pydebug], [build with Py_DEBUG defined (default is no)]) ],
 [
 if test "$withval" != no
 then
-  AC_DEFINE(Py_DEBUG, 1,
+  AC_DEFINE([Py_DEBUG], [1],
   [Define if you want to build an interpreter with many run-time checks.])
-  AC_MSG_RESULT(yes);
+  AC_MSG_RESULT([yes]);
   Py_DEBUG='true'
   ABIFLAGS="${ABIFLAGS}d"
-else AC_MSG_RESULT(no); Py_DEBUG='false'
+else AC_MSG_RESULT([no]); Py_DEBUG='false'
 fi],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
 # Check for --with-trace-refs
 # --with-trace-refs
-AC_MSG_CHECKING(for --with-trace-refs)
-AC_ARG_WITH(trace-refs,
-  AS_HELP_STRING(
-    [--with-trace-refs],
-    [enable tracing references for debugging purpose (default is no)]),,
-  with_trace_refs=no)
-AC_MSG_RESULT($with_trace_refs)
+AC_MSG_CHECKING([for --with-trace-refs])
+AC_ARG_WITH([trace-refs],
+  [AS_HELP_STRING([--with-trace-refs], [enable tracing references for debugging purpose (default is no)])],
+  [], [with_trace_refs=no]
+)
+AC_MSG_RESULT([$with_trace_refs])
 
 if test "$with_trace_refs" = "yes"
 then
-  AC_DEFINE(Py_TRACE_REFS, 1, [Define if you want to enable tracing references for debugging purpose])
+  AC_DEFINE([Py_TRACE_REFS], [1],
+            [Define if you want to enable tracing references for debugging purpose])
 fi
 
 
@@ -1691,8 +1548,9 @@ AC_MSG_CHECKING([for --enable-pystats])
 AC_ARG_ENABLE([pystats],
   [AS_HELP_STRING(
     [--enable-pystats],
-    [enable internal statistics gathering (default is no)])],,
-  [enable_pystats=no]
+    [enable internal statistics gathering (default is no)]
+  )],
+  [], [enable_pystats=no]
 )
 AC_MSG_RESULT([$enable_pystats])
 
@@ -1703,8 +1561,8 @@ AS_VAR_IF([enable_pystats], [yes], [
 # Check for --with-assertions.
 # This allows enabling assertions without Py_DEBUG.
 assertions='false'
-AC_MSG_CHECKING(for --with-assertions)
-AC_ARG_WITH(assertions,
+AC_MSG_CHECKING([for --with-assertions])
+AC_ARG_WITH([assertions],
             AS_HELP_STRING([--with-assertions],[build with C assertions enabled (default is no)]),
 [
 if test "$withval" != no
@@ -1713,32 +1571,32 @@ then
 fi],
 [])
 if test "$assertions" = 'true'; then
-  AC_MSG_RESULT(yes)
+  AC_MSG_RESULT([yes])
 elif test "$Py_DEBUG" = 'true'; then
   assertions='true'
-  AC_MSG_RESULT(implied by --with-pydebug)
+  AC_MSG_RESULT([implied by --with-pydebug])
 else
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT([no])
 fi
 
 # Enable optimization flags
-AC_SUBST(DEF_MAKE_ALL_RULE)
-AC_SUBST(DEF_MAKE_RULE)
+AC_SUBST([DEF_MAKE_ALL_RULE])
+AC_SUBST([DEF_MAKE_RULE])
 Py_OPT='false'
-AC_MSG_CHECKING(for --enable-optimizations)
-AC_ARG_ENABLE(optimizations, AS_HELP_STRING(
+AC_MSG_CHECKING([for --enable-optimizations])
+AC_ARG_ENABLE([optimizations], AS_HELP_STRING(
                 [--enable-optimizations],
                 [enable expensive, stable optimizations (PGO, etc.) (default is no)]),
 [
 if test "$enableval" != no
 then
   Py_OPT='true'
-  AC_MSG_RESULT(yes);
+  AC_MSG_RESULT([yes]);
 else
   Py_OPT='false'
-  AC_MSG_RESULT(no);
+  AC_MSG_RESULT([no]);
 fi],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
 if test "$Py_OPT" = 'true' ; then
   # Intentionally not forcing Py_LTO='true' here.  Too many toolchains do not
@@ -1768,13 +1626,13 @@ else
   DEF_MAKE_RULE="all"
 fi
 
-AC_ARG_VAR(PROFILE_TASK, Python args for PGO generation task)
-AC_MSG_CHECKING(PROFILE_TASK)
+AC_ARG_VAR([PROFILE_TASK], [Python args for PGO generation task])
+AC_MSG_CHECKING([PROFILE_TASK])
 if test -z "$PROFILE_TASK"
 then
 	PROFILE_TASK='-m test --pgo --timeout=$(TESTTIMEOUT)'
 fi
-AC_MSG_RESULT($PROFILE_TASK)
+AC_MSG_RESULT([$PROFILE_TASK])
 
 # Make llvm-related checks work on systems where llvm tools are not installed with their
 # normal names in the default $PATH (ie: Ubuntu).  They exist under the
@@ -1797,28 +1655,29 @@ then
 fi
 
 # Enable LTO flags
-AC_MSG_CHECKING(for --with-lto)
-AC_ARG_WITH(lto, AS_HELP_STRING([--with-lto=@<:@full|thin|no|yes@:>@], [enable Link-Time-Optimization in any build (default is no)]),
+AC_MSG_CHECKING([for --with-lto])
+AC_ARG_WITH([lto],
+  [AS_HELP_STRING([--with-lto=@<:@full|thin|no|yes@:>@], [enable Link-Time-Optimization in any build (default is no)])],
 [
 case "$withval" in
     full)
         Py_LTO='true'
         Py_LTO_POLICY='full'
-        AC_MSG_RESULT(yes)
+        AC_MSG_RESULT([yes])
         ;;
     thin)
         Py_LTO='true'
         Py_LTO_POLICY='thin'
-        AC_MSG_RESULT(yes)
+        AC_MSG_RESULT([yes])
         ;;
     yes)
         Py_LTO='true'
         Py_LTO_POLICY='default'
-        AC_MSG_RESULT(yes)
+        AC_MSG_RESULT([yes])
         ;;
     no)
         Py_LTO='false'
-        AC_MSG_RESULT(no)
+        AC_MSG_RESULT([no])
         ;;
     *)
         Py_LTO='false'
@@ -1826,7 +1685,7 @@ case "$withval" in
         ;;
 esac
 ],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 if test "$Py_LTO" = 'true' ; then
   case $CC in
     *clang*)
@@ -1834,9 +1693,9 @@ if test "$Py_LTO" = 'true' ; then
       dnl Clang linker requires -flto in order to link objects with LTO information.
       dnl Thin LTO is faster and works for object files with full LTO information, too.
       AX_CHECK_COMPILE_FLAG([-flto=thin],[LDFLAGS_NOLTO="-flto=thin"],[LDFLAGS_NOLTO="-flto"])
-      AC_SUBST(LLVM_AR)
-      AC_PATH_TOOL(LLVM_AR, llvm-ar, '', ${llvm_path})
-      AC_SUBST(LLVM_AR_FOUND)
+      AC_SUBST([LLVM_AR])
+      AC_PATH_TOOL([LLVM_AR], [llvm-ar], [''], [${llvm_path}])
+      AC_SUBST([LLVM_AR_FOUND])
       if test -n "${LLVM_AR}" -a -x "${LLVM_AR}"
       then
         LLVM_AR_FOUND="found"
@@ -1930,14 +1789,14 @@ if test "$Py_LTO" = 'true' ; then
 fi
 
 # Enable PGO flags.
-AC_SUBST(PGO_PROF_GEN_FLAG)
-AC_SUBST(PGO_PROF_USE_FLAG)
-AC_SUBST(LLVM_PROF_MERGER)
-AC_SUBST(LLVM_PROF_FILE)
-AC_SUBST(LLVM_PROF_ERR)
-AC_SUBST(LLVM_PROFDATA)
-AC_PATH_TOOL(LLVM_PROFDATA, llvm-profdata, '', ${llvm_path})
-AC_SUBST(LLVM_PROF_FOUND)
+AC_SUBST([PGO_PROF_GEN_FLAG])
+AC_SUBST([PGO_PROF_USE_FLAG])
+AC_SUBST([LLVM_PROF_MERGER])
+AC_SUBST([LLVM_PROF_FILE])
+AC_SUBST([LLVM_PROF_ERR])
+AC_SUBST([LLVM_PROFDATA])
+AC_PATH_TOOL([LLVM_PROFDATA], [llvm-profdata], [''], [${llvm_path}])
+AC_SUBST([LLVM_PROF_FOUND])
 if test -n "${LLVM_PROFDATA}" -a -x "${LLVM_PROFDATA}"
 then
   LLVM_PROF_FOUND="found"
@@ -1957,7 +1816,10 @@ then
   fi
 fi
 LLVM_PROF_ERR=no
-case $CC in
+
+# GNU Autoconf recommends the use of expr instead of basename.
+AS_VAR_SET([CC_BASENAME], [$(expr "//$CC" : '.*/\(.*\)')])
+case "$CC_BASENAME" in
   *clang*)
     # Any changes made here should be reflected in the GCC+Darwin case below
     PGO_PROF_GEN_FLAG="-fprofile-instr-generate"
@@ -2007,34 +1869,27 @@ esac
 
 # BOLT optimization. Always configured after PGO since it always runs after PGO.
 Py_BOLT='false'
-AC_MSG_CHECKING(for --enable-bolt)
-AC_ARG_ENABLE(bolt, AS_HELP_STRING(
+AC_MSG_CHECKING([for --enable-bolt])
+AC_ARG_ENABLE([bolt], [AS_HELP_STRING(
                 [--enable-bolt],
-                [enable usage of the llvm-bolt post-link optimizer (default is no)]),
+                [enable usage of the llvm-bolt post-link optimizer (default is no)])],
 [
 if test "$enableval" != no
 then
   Py_BOLT='true'
-  AC_MSG_RESULT(yes);
+  AC_MSG_RESULT([yes]);
 else
   Py_BOLT='false'
-  AC_MSG_RESULT(no);
+  AC_MSG_RESULT([no]);
 fi],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
-AC_SUBST(PREBOLT_RULE)
+AC_SUBST([PREBOLT_RULE])
 if test "$Py_BOLT" = 'true' ; then
   PREBOLT_RULE="${DEF_MAKE_ALL_RULE}"
   DEF_MAKE_ALL_RULE="bolt-opt"
   DEF_MAKE_RULE="build_all"
 
-  AC_SUBST(READELF)
-  AC_CHECK_TOOLS(READELF, [readelf], "notfound")
-  if test "$READELF" == "notfound"
-  then
-    AC_MSG_ERROR([readelf is required for a --enable-bolt build but could not be found.])
-  fi
-
   # -fno-reorder-blocks-and-partition is required for bolt to work.
   # Possibly GCC only.
   AX_CHECK_COMPILE_FLAG([-fno-reorder-blocks-and-partition],[
@@ -2048,25 +1903,73 @@ if test "$Py_BOLT" = 'true' ; then
   CFLAGS_NODIST="$CFLAGS_NODIST -fno-pie"
   # We want to add these no-pie flags to linking executables but not shared libraries:
   LINKCC="$LINKCC -fno-pie -no-pie"
-  AC_SUBST(LLVM_BOLT)
-  AC_PATH_TOOL(LLVM_BOLT, llvm-bolt, '', ${llvm_path})
+  AC_SUBST([LLVM_BOLT])
+  AC_PATH_TOOL([LLVM_BOLT], [llvm-bolt], [''], [${llvm_path}])
   if test -n "${LLVM_BOLT}" -a -x "${LLVM_BOLT}"
   then
-    AC_MSG_RESULT("Found llvm-bolt")
+    AC_MSG_RESULT(["Found llvm-bolt"])
   else
     AC_MSG_ERROR([llvm-bolt is required for a --enable-bolt build but could not be found.])
   fi
 
-  AC_SUBST(MERGE_FDATA)
-  AC_PATH_TOOL(MERGE_FDATA, merge-fdata, '', ${llvm_path})
+  AC_SUBST([MERGE_FDATA])
+  AC_PATH_TOOL([MERGE_FDATA], [merge-fdata], [''], [${llvm_path}])
   if test -n "${MERGE_FDATA}" -a -x "${MERGE_FDATA}"
   then
-    AC_MSG_RESULT("Found merge-fdata")
+    AC_MSG_RESULT(["Found merge-fdata"])
   else
     AC_MSG_ERROR([merge-fdata is required for a --enable-bolt build but could not be found.])
   fi
 fi
 
+dnl Enable BOLT of libpython if built.
+AC_SUBST([BOLT_BINARIES])
+BOLT_BINARIES='$(BUILDPYTHON)'
+AS_VAR_IF([enable_shared], [yes], [
+  BOLT_BINARIES="${BOLT_BINARIES} \$(INSTSONAME)"
+])
+
+AC_ARG_VAR(
+  [BOLT_INSTRUMENT_FLAGS],
+  [Arguments to llvm-bolt when instrumenting binaries]
+)
+AC_MSG_CHECKING([BOLT_INSTRUMENT_FLAGS])
+if test -z "${BOLT_INSTRUMENT_FLAGS}"
+then
+  BOLT_INSTRUMENT_FLAGS=
+fi
+AC_MSG_RESULT([$BOLT_INSTRUMENT_FLAGS])
+
+AC_ARG_VAR(
+  [BOLT_APPLY_FLAGS],
+  [Arguments to llvm-bolt when creating a BOLT optimized binary]
+)
+AC_MSG_CHECKING([BOLT_APPLY_FLAGS])
+if test -z "${BOLT_APPLY_FLAGS}"
+then
+  AS_VAR_SET(
+    [BOLT_APPLY_FLAGS],
+    [m4_normalize("
+     -update-debug-sections
+     -reorder-blocks=ext-tsp
+     -reorder-functions=hfsort+
+     -split-functions
+     -icf=1
+     -inline-all
+     -split-eh
+     -reorder-functions-use-hot-size
+     -peepholes=none
+     -jump-tables=aggressive
+     -inline-ap
+     -indirect-call-promotion=all
+     -dyno-stats
+     -use-gnu-stack
+     -frame-opt=hot
+   ")]
+  )
+fi
+AC_MSG_RESULT([$BOLT_APPLY_FLAGS])
+
 # XXX Shouldn't the code above that fiddles with BASECFLAGS and OPT be
 # merged with this chunk of code?
 
@@ -2156,8 +2059,8 @@ AS_VAR_IF([ac_cv_cc_supports_og], [yes],
 
 # tweak OPT based on compiler and platform, only if the user didn't set
 # it on the command line
-AC_SUBST(OPT)
-AC_SUBST(CFLAGS_ALIASING)
+AC_SUBST([OPT])
+AC_SUBST([CFLAGS_ALIASING])
 if test "${OPT-unset}" = "unset"
 then
     case $GCC in
@@ -2251,6 +2154,23 @@ AS_CASE([$ac_sys_system],
     LIBS="$LIBS -lwasi-emulated-signal -lwasi-emulated-getpid -lwasi-emulated-process-clocks"
     echo "#define _WASI_EMULATED_SIGNAL 1" >> confdefs.h
 
+    AS_VAR_IF([enable_wasm_pthreads], [yes], [
+      # Note: update CFLAGS because ac_compile/ac_link needs this too.
+      # without this, configure fails to find pthread_create, sem_init,
+      # etc because they are only available in the sysroot for
+      # wasm32-wasi-threads.
+      # Note: wasi-threads requires --import-memory.
+      # Note: wasi requires --export-memory.
+      # Note: --export-memory is implicit unless --import-memory is given
+      # Note: this requires LLVM >= 16.
+      AS_VAR_APPEND([CFLAGS], [" -target wasm32-wasi-threads -pthread"])
+      AS_VAR_APPEND([CFLAGS_NODIST], [" -target wasm32-wasi-threads -pthread"])
+      AS_VAR_APPEND([LDFLAGS_NODIST], [" -target wasm32-wasi-threads -pthread"])
+      AS_VAR_APPEND([LDFLAGS_NODIST], [" -Wl,--import-memory"])
+      AS_VAR_APPEND([LDFLAGS_NODIST], [" -Wl,--export-memory"])
+      AS_VAR_APPEND([LDFLAGS_NODIST], [" -Wl,--max-memory=10485760"])
+    ])
+
     dnl increase initial memory and stack size, move stack first
     dnl https://github.com/WebAssembly/wasi-libc/issues/233
     AS_VAR_APPEND([LDFLAGS_NODIST], [" -z stack-size=524288 -Wl,--stack-first -Wl,--initial-memory=10485760"])
@@ -2263,21 +2183,21 @@ AS_CASE([$enable_wasm_dynamic_linking],
   [missing], []
 )
 
-AC_SUBST(BASECFLAGS)
-AC_SUBST(CFLAGS_NODIST)
-AC_SUBST(LDFLAGS_NODIST)
-AC_SUBST(LDFLAGS_NOLTO)
+AC_SUBST([BASECFLAGS])
+AC_SUBST([CFLAGS_NODIST])
+AC_SUBST([LDFLAGS_NODIST])
+AC_SUBST([LDFLAGS_NOLTO])
 AC_SUBST([WASM_ASSETS_DIR])
 AC_SUBST([WASM_STDLIB])
 
 # The -arch flags for universal builds on macOS
 UNIVERSAL_ARCH_FLAGS=
-AC_SUBST(UNIVERSAL_ARCH_FLAGS)
+AC_SUBST([UNIVERSAL_ARCH_FLAGS])
 
 dnl PY_CHECK_CC_WARNING(ENABLE, WARNING, [MSG])
 AC_DEFUN([PY_CHECK_CC_WARNING], [
   AS_VAR_PUSHDEF([py_var], [ac_cv_$1_]m4_normalize($2)[_warning])
-  AC_CACHE_CHECK(m4_ifblank([$3], [if we can $1 $CC $2 warning], [$3]), [py_var], [
+  AC_CACHE_CHECK([m4_ifblank([$3], [if we can $1 $CC $2 warning], [$3])], [py_var], [
     AS_VAR_COPY([py_cflags], [CFLAGS])
     AS_VAR_APPEND([CFLAGS], ["-W$2 -Werror"])
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
@@ -2335,7 +2255,7 @@ yes)
 
     # ICC doesn't recognize the option, but only emits a warning
     ## XXX does it emit an unused result warning and can it be disabled?
-    AS_CASE([$CC],
+    AS_CASE(["$CC_BASENAME"],
             [*icc*], [ac_cv_disable_unused_result_warning=no]
             [PY_CHECK_CC_WARNING([disable], [unused-result])])
     AS_VAR_IF([ac_cv_disable_unused_result_warning], [yes],
@@ -2431,7 +2351,7 @@ yes)
         # used to be here, but non-Apple gcc doesn't accept them.
         if test "${CC}" = gcc
         then
-            AC_MSG_CHECKING(which compiler should be used)
+            AC_MSG_CHECKING([which compiler should be used])
             case "${UNIVERSALSDK}" in
             */MacOSX10.4u.sdk)
                 # Build using 10.4 SDK, force usage of gcc when the
@@ -2441,7 +2361,7 @@ yes)
                 CPP=cpp-4.0
                 ;;
             esac
-            AC_MSG_RESULT($CC)
+            AC_MSG_RESULT([$CC])
         fi
 
         LIPO_INTEL64_FLAGS=""
@@ -2518,7 +2438,7 @@ yes)
         #       below to pick either 10.3, 10.4, or 10.5 as the target.
         # 4. If we are running on OS X 10.2 or earlier, good luck!
 
-        AC_MSG_CHECKING(which MACOSX_DEPLOYMENT_TARGET to use)
+        AC_MSG_CHECKING([which MACOSX_DEPLOYMENT_TARGET to use])
         cur_target_major=`sw_vers -productVersion | \
                 sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
         cur_target_minor=`sw_vers -productVersion | \
@@ -2555,13 +2475,13 @@ yes)
         MACOSX_DEPLOYMENT_TARGET="$CONFIGURE_MACOSX_DEPLOYMENT_TARGET"
         export MACOSX_DEPLOYMENT_TARGET
         EXPORT_MACOSX_DEPLOYMENT_TARGET=''
-        AC_MSG_RESULT($MACOSX_DEPLOYMENT_TARGET)
+        AC_MSG_RESULT([$MACOSX_DEPLOYMENT_TARGET])
 
-        AC_MSG_CHECKING(if specified universal architectures work)
-        AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]], [[printf("%d", 42);]])],
-            [AC_MSG_RESULT(yes)],
-            [AC_MSG_RESULT(no)
-             AC_MSG_ERROR(check config.log and use the '--with-universal-archs' option)
+        AC_MSG_CHECKING([if specified universal architectures work])
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>]], [[printf("%d", 42);]])],
+            [AC_MSG_RESULT([yes])],
+            [AC_MSG_RESULT([no])
+             AC_MSG_ERROR([check config.log and use the '--with-universal-archs' option])
         ])
 
         # end of Darwin* tests
@@ -2581,7 +2501,10 @@ yes)
     ;;
 esac
 
-case "$CC" in
+case "$CC_BASENAME" in
+*mpicc*)
+    CFLAGS_NODIST="$CFLAGS_NODIST"
+    ;;
 *icc*)
     # ICC needs -fp-model strict or floats behave badly
     CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict"
@@ -2765,19 +2688,20 @@ dnl AC_MSG_RESULT($cpp_type)
 
 dnl autoconf 2.71 deprecates STDC_HEADERS, keep for backwards compatibility
 dnl assume C99 compilers provide ANSI C headers
-AC_DEFINE(STDC_HEADERS, 1, [Define to 1 if you have the ANSI C header files.])
+AC_DEFINE([STDC_HEADERS], [1],
+          [Define to 1 if you have the ANSI C header files.])
 
 # checks for header files
 AC_CHECK_HEADERS([ \
-  alloca.h asm/types.h bluetooth.h conio.h crypt.h direct.h dlfcn.h endian.h errno.h fcntl.h grp.h \
-  ieeefp.h io.h langinfo.h libintl.h libutil.h linux/auxvec.h sys/auxv.h linux/fs.h linux/memfd.h \
+  alloca.h asm/types.h bluetooth.h conio.h direct.h dlfcn.h endian.h errno.h fcntl.h grp.h \
+  io.h langinfo.h libintl.h libutil.h linux/auxvec.h sys/auxv.h linux/fs.h linux/limits.h linux/memfd.h \
   linux/random.h linux/soundcard.h \
   linux/tipc.h linux/wait.h netdb.h net/ethernet.h netinet/in.h netpacket/packet.h poll.h process.h pthread.h pty.h \
   sched.h setjmp.h shadow.h signal.h spawn.h stropts.h sys/audioio.h sys/bsdtty.h sys/devpoll.h \
   sys/endian.h sys/epoll.h sys/event.h sys/eventfd.h sys/file.h sys/ioctl.h sys/kern_control.h \
   sys/loadavg.h sys/lock.h sys/memfd.h sys/mkdev.h sys/mman.h sys/modem.h sys/param.h sys/poll.h \
   sys/random.h sys/resource.h sys/select.h sys/sendfile.h sys/socket.h sys/soundcard.h sys/stat.h \
-  sys/statvfs.h sys/sys_domain.h sys/syscall.h sys/sysmacros.h sys/termio.h sys/time.h sys/times.h \
+  sys/statvfs.h sys/sys_domain.h sys/syscall.h sys/sysmacros.h sys/termio.h sys/time.h sys/times.h sys/timerfd.h \
   sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h sys/xattr.h sysexits.h syslog.h \
   termios.h util.h utime.h utmp.h \
 ])
@@ -2788,7 +2712,7 @@ AC_HEADER_MAJOR
 # http://permalink.gmane.org/gmane.linux.bluez.kernel/22294
 SAVE_CFLAGS=$CFLAGS
 CFLAGS="-std=c99 $CFLAGS"
-AC_CHECK_HEADERS(bluetooth/bluetooth.h)
+AC_CHECK_HEADERS([bluetooth/bluetooth.h])
 CFLAGS=$SAVE_CFLAGS
 
 # On Darwin (OS X) net/if.h requires sys/socket.h to be imported first.
@@ -2802,7 +2726,8 @@ AC_CHECK_HEADERS([net/if.h], [], [],
 ])
 
 # On Linux, netlink.h requires asm/types.h
-AC_CHECK_HEADERS(linux/netlink.h,,,[
+# On FreeBSD, netlink.h is located in netlink/netlink.h
+AC_CHECK_HEADERS([linux/netlink.h netlink/netlink.h], [], [], [
 #ifdef HAVE_ASM_TYPES_H
 #include <asm/types.h>
 #endif
@@ -2812,7 +2737,7 @@ AC_CHECK_HEADERS(linux/netlink.h,,,[
 ])
 
 # On Linux, qrtr.h requires asm/types.h
-AC_CHECK_HEADERS(linux/qrtr.h,,,[
+AC_CHECK_HEADERS([linux/qrtr.h], [], [], [
 #ifdef HAVE_ASM_TYPES_H
 #include <asm/types.h>
 #endif
@@ -2821,7 +2746,7 @@ AC_CHECK_HEADERS(linux/qrtr.h,,,[
 #endif
 ])
 
-AC_CHECK_HEADERS(linux/vm_sockets.h,,,[
+AC_CHECK_HEADERS([linux/vm_sockets.h], [], [], [
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
@@ -2829,7 +2754,9 @@ AC_CHECK_HEADERS(linux/vm_sockets.h,,,[
 
 # On Linux, can.h, can/bcm.h, can/j1939.h, can/raw.h require sys/socket.h
 # On NetBSD, netcan/can.h requires sys/socket.h
-AC_CHECK_HEADERS(linux/can.h linux/can/bcm.h linux/can/j1939.h linux/can/raw.h netcan/can.h,,,[
+AC_CHECK_HEADERS(
+[linux/can.h linux/can/bcm.h linux/can/j1939.h linux/can/raw.h netcan/can.h],
+[], [], [
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
@@ -2841,7 +2768,8 @@ AC_CACHE_CHECK([for clock_t in time.h], [ac_cv_clock_t_time_h], [
 ])
 dnl checks for "no"
 AS_VAR_IF([ac_cv_clock_t_time_h], [no], [
-  AC_DEFINE(clock_t, long, [Define to 'long' if <time.h> doesn't define.])
+  AC_DEFINE([clock_t], [long],
+            [Define to 'long' if <time.h> doesn't define.])
 ])
 
 AC_CACHE_CHECK([for makedev], [ac_cv_func_makedev], [
@@ -2859,7 +2787,8 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 ])
 
 AS_VAR_IF([ac_cv_func_makedev], [yes], [
-    AC_DEFINE(HAVE_MAKEDEV, 1, [Define this if you have the makedev macro.])
+    AC_DEFINE([HAVE_MAKEDEV], [1],
+              [Define this if you have the makedev macro.])
 ])
 
 # byte swapping
@@ -2876,7 +2805,8 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 ])
 
 AS_VAR_IF([ac_cv_func_le64toh], [yes], [
-    AC_DEFINE(HAVE_HTOLE64, 1, [Define this if you have le64toh()])
+    AC_DEFINE([HAVE_HTOLE64], [1],
+              [Define this if you have le64toh()])
 ])
 
 use_lfs=yes
@@ -2890,13 +2820,13 @@ if test "$use_lfs" = "yes"; then
 # These may affect some typedefs
 case $ac_sys_system/$ac_sys_release in
 AIX*)
-    AC_DEFINE(_LARGE_FILES, 1,
+    AC_DEFINE([_LARGE_FILES], [1],
     [This must be defined on AIX systems to enable large file support.])
     ;;
 esac
-AC_DEFINE(_LARGEFILE_SOURCE, 1,
+AC_DEFINE([_LARGEFILE_SOURCE], [1],
 [This must be defined on some systems to enable large file support.])
-AC_DEFINE(_FILE_OFFSET_BITS, 64,
+AC_DEFINE([_FILE_OFFSET_BITS], [64],
 [This must be set to 64 on some systems to enable large file support.])
 fi
 
@@ -2915,40 +2845,42 @@ AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[assume C89 semantics that RETSIGTYPE is
 AC_TYPE_SIZE_T
 AC_TYPE_UID_T
 
-AC_CHECK_TYPE(ssize_t,
-  AC_DEFINE(HAVE_SSIZE_T, 1, [Define if your compiler provides ssize_t]),,)
-AC_CHECK_TYPE(__uint128_t,
-  AC_DEFINE(HAVE_GCC_UINT128_T, 1, [Define if your compiler provides __uint128_t]),,)
+AC_CHECK_TYPE([ssize_t],
+  AC_DEFINE([HAVE_SSIZE_T], [1],
+            [Define if your compiler provides ssize_t]), [], [])
+AC_CHECK_TYPE([__uint128_t],
+  AC_DEFINE([HAVE_GCC_UINT128_T], [1],
+            [Define if your compiler provides __uint128_t]), [], [])
 
 # Sizes and alignments of various common basic types
 # ANSI C requires sizeof(char) == 1, so no need to check it
-AC_CHECK_SIZEOF(int, 4)
-AC_CHECK_SIZEOF(long, 4)
-AC_CHECK_ALIGNOF(long)
-AC_CHECK_SIZEOF(long long, 8)
-AC_CHECK_SIZEOF(void *, 4)
-AC_CHECK_SIZEOF(short, 2)
-AC_CHECK_SIZEOF(float, 4)
-AC_CHECK_SIZEOF(double, 8)
-AC_CHECK_SIZEOF(fpos_t, 4)
-AC_CHECK_SIZEOF(size_t, 4)
-AC_CHECK_ALIGNOF(size_t)
-AC_CHECK_SIZEOF(pid_t, 4)
-AC_CHECK_SIZEOF(uintptr_t)
-AC_CHECK_ALIGNOF(max_align_t)
+AC_CHECK_SIZEOF([int], [4])
+AC_CHECK_SIZEOF([long], [4])
+AC_CHECK_ALIGNOF([long])
+AC_CHECK_SIZEOF([long long], [8])
+AC_CHECK_SIZEOF([void *], [4])
+AC_CHECK_SIZEOF([short], [2])
+AC_CHECK_SIZEOF([float], [4])
+AC_CHECK_SIZEOF([double], [8])
+AC_CHECK_SIZEOF([fpos_t], [4])
+AC_CHECK_SIZEOF([size_t], [4])
+AC_CHECK_ALIGNOF([size_t])
+AC_CHECK_SIZEOF([pid_t], [4])
+AC_CHECK_SIZEOF([uintptr_t])
+AC_CHECK_ALIGNOF([max_align_t])
 
 AC_TYPE_LONG_DOUBLE
-AC_CHECK_SIZEOF(long double, 16)
+AC_CHECK_SIZEOF([long double], [16])
 
-AC_CHECK_SIZEOF(_Bool, 1)
+AC_CHECK_SIZEOF([_Bool], [1])
 
-AC_CHECK_SIZEOF(off_t, [], [
+AC_CHECK_SIZEOF([off_t], [], [
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
 ])
 
-AC_MSG_CHECKING(whether to enable large file support)
+AC_MSG_CHECKING([whether to enable large file support])
 if test "$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \
 	"$ac_cv_sizeof_long_long" -ge "$ac_cv_sizeof_off_t"; then
   have_largefile_support="yes"
@@ -2960,17 +2892,17 @@ AS_CASE([$ac_sys_system],
   [Emscripten], [have_largefile_support="no"]
 )
 AS_VAR_IF([have_largefile_support], [yes], [
-  AC_DEFINE(HAVE_LARGEFILE_SUPPORT, 1,
+  AC_DEFINE([HAVE_LARGEFILE_SUPPORT], [1],
   [Defined to enable large file support when an off_t is bigger than a long
    and long long is at least as big as an off_t. You may need
    to add some flags for configuration and compilation to enable this mode.
    (For Solaris and Linux, the necessary defines are already defined.)])
-  AC_MSG_RESULT(yes)
+  AC_MSG_RESULT([yes])
 ], [
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT([no])
 ])
 
-AC_CHECK_SIZEOF(time_t, [], [
+AC_CHECK_SIZEOF([time_t], [], [
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -2991,11 +2923,11 @@ fi
 
 AC_CACHE_CHECK([for pthread_t], [ac_cv_have_pthread_t], [
 AC_COMPILE_IFELSE([
-  AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_t x; x = *(pthread_t*)0;]])
+  AC_LANG_PROGRAM([[@%:@include <pthread.h>]], [[pthread_t x; x = *(pthread_t*)0;]])
 ], [ac_cv_have_pthread_t=yes], [ac_cv_have_pthread_t=no])
 ])
 AS_VAR_IF([ac_cv_have_pthread_t], [yes], [
-  AC_CHECK_SIZEOF(pthread_t, [], [
+  AC_CHECK_SIZEOF([pthread_t], [], [
 #ifdef HAVE_PTHREAD_H
 #include <pthread.h>
 #endif
@@ -3004,11 +2936,11 @@ AS_VAR_IF([ac_cv_have_pthread_t], [yes], [
 
 # Issue #25658: POSIX hasn't defined that pthread_key_t is compatible with int.
 # This checking will be unnecessary after removing deprecated TLS API.
-AC_CHECK_SIZEOF(pthread_key_t, [], [[#include <pthread.h>]])
+AC_CHECK_SIZEOF([pthread_key_t], [], [[@%:@include <pthread.h>]])
 AC_CACHE_CHECK([whether pthread_key_t is compatible with int], [ac_cv_pthread_key_t_is_arithmetic_type], [
 if test "$ac_cv_sizeof_pthread_key_t" -eq "$ac_cv_sizeof_int" ; then
   AC_COMPILE_IFELSE(
-    [AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_key_t k; k * 1;]])],
+    [AC_LANG_PROGRAM([[@%:@include <pthread.h>]], [[pthread_key_t k; k * 1;]])],
     [ac_cv_pthread_key_t_is_arithmetic_type=yes],
     [ac_cv_pthread_key_t_is_arithmetic_type=no]
   )
@@ -3017,90 +2949,97 @@ else
 fi
 ])
 AS_VAR_IF([ac_cv_pthread_key_t_is_arithmetic_type], [yes], [
-    AC_DEFINE(PTHREAD_KEY_T_IS_COMPATIBLE_WITH_INT, 1,
+    AC_DEFINE([PTHREAD_KEY_T_IS_COMPATIBLE_WITH_INT], [1],
               [Define if pthread_key_t is compatible with int.])
 ])
 
 CC="$ac_save_cc"
 
-AC_MSG_CHECKING(for --enable-framework)
+AC_MSG_CHECKING([for --enable-framework])
 if test "$enable_framework"
 then
 	BASECFLAGS="$BASECFLAGS -fno-common -dynamic"
 	# -F. is needed to allow linking to the framework while
 	# in the build location.
-	AC_DEFINE(WITH_NEXT_FRAMEWORK, 1,
+	AC_DEFINE([WITH_NEXT_FRAMEWORK], [1],
          [Define if you want to produce an OpenStep/Rhapsody framework
          (shared library plus accessory files).])
-	AC_MSG_RESULT(yes)
+	AC_MSG_RESULT([yes])
 	if test $enable_shared = "yes"
 	then
 		AC_MSG_ERROR([Specifying both --enable-shared and --enable-framework is not supported, use only --enable-framework instead])
 	fi
 else
-	AC_MSG_RESULT(no)
+	AC_MSG_RESULT([no])
 fi
 
 # Check for --with-dsymutil
-AC_SUBST(DSYMUTIL)
-AC_SUBST(DSYMUTIL_PATH)
+AC_SUBST([DSYMUTIL])
+AC_SUBST([DSYMUTIL_PATH])
 DSYMUTIL=
 DSYMUTIL_PATH=
-AC_MSG_CHECKING(for --with-dsymutil)
-AC_ARG_WITH(dsymutil,
-            AS_HELP_STRING([--with-dsymutil], [link debug information into final executable with dsymutil in macOS  (default is no)]),
+AC_MSG_CHECKING([for --with-dsymutil])
+AC_ARG_WITH(
+  [dsymutil],
+  [AS_HELP_STRING(
+    [--with-dsymutil],
+    [link debug information into final executable with dsymutil in macOS  (default is no)]
+  )],
 [
 if test "$withval" != no
 then
   if test "$MACHDEP" != "darwin"; then
     AC_MSG_ERROR([dsymutil debug linking is only available in macOS.])
   fi
- AC_MSG_RESULT(yes);
+ AC_MSG_RESULT([yes]);
   DSYMUTIL='true'
-else AC_MSG_RESULT(no); DSYMUTIL=
+else AC_MSG_RESULT([no]); DSYMUTIL=
 fi],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
 if test "$DSYMUTIL"; then
-  AC_PATH_PROG(DSYMUTIL_PATH, [dsymutil], [not found])
+  AC_PATH_PROG([DSYMUTIL_PATH], [dsymutil], [not found])
   if test "$DSYMUTIL_PATH" = "not found"; then
       AC_MSG_ERROR([dsymutil command not found on \$PATH])
   fi
 fi
 
-AC_MSG_CHECKING(for dyld)
+AC_MSG_CHECKING([for dyld])
 case $ac_sys_system/$ac_sys_release in
   Darwin/*)
-  	AC_DEFINE(WITH_DYLD, 1,
+    AC_DEFINE([WITH_DYLD], [1],
         [Define if you want to use the new-style (Openstep, Rhapsody, MacOS)
          dynamic linker (dyld) instead of the old-style (NextStep) dynamic
          linker (rld). Dyld is necessary to support frameworks.])
-  	AC_MSG_RESULT(always on for Darwin)
+    AC_MSG_RESULT([always on for Darwin])
   	;;
   *)
-	AC_MSG_RESULT(no)
+	AC_MSG_RESULT([no])
 	;;
 esac
 
-AC_MSG_CHECKING(for --with-address-sanitizer)
-AC_ARG_WITH(address_sanitizer,
+AC_MSG_CHECKING([for --with-address-sanitizer])
+AC_ARG_WITH([address_sanitizer],
             AS_HELP_STRING([--with-address-sanitizer],
                            [enable AddressSanitizer memory error detector, 'asan' (default is no)]),
 [
-AC_MSG_RESULT($withval)
+AC_MSG_RESULT([$withval])
 BASECFLAGS="-fsanitize=address -fno-omit-frame-pointer $BASECFLAGS"
 LDFLAGS="-fsanitize=address $LDFLAGS"
 # ASan works by controlling memory allocation, our own malloc interferes.
 with_pymalloc="no"
 ],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
-AC_MSG_CHECKING(for --with-memory-sanitizer)
-AC_ARG_WITH(memory_sanitizer,
-            AS_HELP_STRING([--with-memory-sanitizer],
-                           [enable MemorySanitizer allocation error detector, 'msan' (default is no)]),
+AC_MSG_CHECKING([for --with-memory-sanitizer])
+AC_ARG_WITH(
+  [memory_sanitizer],
+  [AS_HELP_STRING(
+    [--with-memory-sanitizer],
+    [enable MemorySanitizer allocation error detector, 'msan' (default is no)]
+  )],
 [
-AC_MSG_RESULT($withval)
+AC_MSG_RESULT([$withval])
 AX_CHECK_COMPILE_FLAG([-fsanitize=memory],[
 BASECFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer $BASECFLAGS"
 LDFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 $LDFLAGS"
@@ -3108,34 +3047,37 @@ LDFLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 $LDFLAGS"
 # MSan works by controlling memory allocation, our own malloc interferes.
 with_pymalloc="no"
 ],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
-AC_MSG_CHECKING(for --with-undefined-behavior-sanitizer)
-AC_ARG_WITH(undefined_behavior_sanitizer,
-            AS_HELP_STRING([--with-undefined-behavior-sanitizer],
-                           [enable UndefinedBehaviorSanitizer undefined behaviour detector, 'ubsan' (default is no)]),
+AC_MSG_CHECKING([for --with-undefined-behavior-sanitizer])
+AC_ARG_WITH(
+  [undefined_behavior_sanitizer],
+  [AS_HELP_STRING(
+    [--with-undefined-behavior-sanitizer],
+    [enable UndefinedBehaviorSanitizer undefined behaviour detector, 'ubsan' (default is no)]
+  )],
 [
-AC_MSG_RESULT($withval)
+AC_MSG_RESULT([$withval])
 BASECFLAGS="-fsanitize=undefined $BASECFLAGS"
 LDFLAGS="-fsanitize=undefined $LDFLAGS"
 with_ubsan="yes"
 ],
 [
-AC_MSG_RESULT(no)
+AC_MSG_RESULT([no])
 with_ubsan="no"
 ])
 
 # Set info about shared libraries.
-AC_SUBST(SHLIB_SUFFIX)
-AC_SUBST(LDSHARED)
-AC_SUBST(LDCXXSHARED)
-AC_SUBST(BLDSHARED)
-AC_SUBST(CCSHARED)
-AC_SUBST(LINKFORSHARED)
+AC_SUBST([SHLIB_SUFFIX])
+AC_SUBST([LDSHARED])
+AC_SUBST([LDCXXSHARED])
+AC_SUBST([BLDSHARED])
+AC_SUBST([CCSHARED])
+AC_SUBST([LINKFORSHARED])
 
 # SHLIB_SUFFIX is the extension of shared libraries `(including the dot!)
 # -- usually .so, .sl on HP-UX, .dll on Cygwin
-AC_MSG_CHECKING(the extension of shared libraries)
+AC_MSG_CHECKING([the extension of shared libraries])
 if test -z "$SHLIB_SUFFIX"; then
 	case $ac_sys_system in
 	hp*|HP*)
@@ -3148,13 +3090,13 @@ if test -z "$SHLIB_SUFFIX"; then
 	*)	   SHLIB_SUFFIX=.so;;
 	esac
 fi
-AC_MSG_RESULT($SHLIB_SUFFIX)
+AC_MSG_RESULT([$SHLIB_SUFFIX])
 
 # LDSHARED is the ld *command* used to create shared library
 # -- "cc -G" on SunOS 5.x.
 # (Shared libraries in this instance are shared modules to be loaded into
 # Python, as opposed to building Python itself as a shared library.)
-AC_MSG_CHECKING(LDSHARED)
+AC_MSG_CHECKING([LDSHARED])
 if test -z "$LDSHARED"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -3286,7 +3228,7 @@ if test "$enable_wasm_dynamic_linking" = "yes" -a "$ac_sys_system" = "Emscripten
   BLDSHARED='$(CC) -shared -sSIDE_MODULE=1'
 fi
 
-AC_MSG_RESULT($LDSHARED)
+AC_MSG_RESULT([$LDSHARED])
 LDCXXSHARED=${LDCXXSHARED-$LDSHARED}
 
 AC_MSG_CHECKING([BLDSHARED flags])
@@ -3295,7 +3237,7 @@ AC_MSG_RESULT([$BLDSHARED])
 
 # CCSHARED are the C *flags* used to create objects to go into a shared
 # library (module) -- this is only needed for a few systems
-AC_MSG_CHECKING(CCSHARED)
+AC_MSG_CHECKING([CCSHARED])
 if test -z "$CCSHARED"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -3331,10 +3273,10 @@ then
 		CCSHARED="-fpic -D__SO_PICABILINUX__  -ftls-model=global-dynamic"
 	esac
 fi
-AC_MSG_RESULT($CCSHARED)
+AC_MSG_RESULT([$CCSHARED])
 # LINKFORSHARED are the flags passed to the $(CC) command that links
 # the python executable -- this is only needed for a few systems
-AC_MSG_CHECKING(LINKFORSHARED)
+AC_MSG_CHECKING([LINKFORSHARED])
 if test -z "$LINKFORSHARED"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -3360,8 +3302,8 @@ then
 
     LINKFORSHARED="-Wl,-stack_size,$stack_size $LINKFORSHARED"
 
-    AC_DEFINE_UNQUOTED(THREAD_STACK_SIZE,
-        0x$stack_size,
+    AC_DEFINE_UNQUOTED([THREAD_STACK_SIZE],
+        [0x$stack_size],
         [Custom thread stack size depending on chosen sanitizer runtimes.])
 
 		if test "$enable_framework"
@@ -3400,11 +3342,11 @@ then
 		LINKFORSHARED='-Wl,-export-dynamic';;
 	esac
 fi
-AC_MSG_RESULT($LINKFORSHARED)
+AC_MSG_RESULT([$LINKFORSHARED])
 
 
-AC_SUBST(CFLAGSFORSHARED)
-AC_MSG_CHECKING(CFLAGSFORSHARED)
+AC_SUBST([CFLAGSFORSHARED])
+AC_MSG_CHECKING([CFLAGSFORSHARED])
 if test ! "$LIBRARY" = "$LDLIBRARY"
 then
 	case $ac_sys_system in
@@ -3422,7 +3364,7 @@ AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
   CFLAGSFORSHARED='$(CCSHARED)'
 ])
 
-AC_MSG_RESULT($CFLAGSFORSHARED)
+AC_MSG_RESULT([$CFLAGSFORSHARED])
 
 # SHLIBS are libraries (except -lc and -lm) to link to the python shared
 # library (with --enable-shared).
@@ -3432,13 +3374,13 @@ AC_MSG_RESULT($CFLAGSFORSHARED)
 # to LIBS. This, in turn, means that applications linking the shared libpython
 # don't need to link LIBS explicitly. The default should be only changed
 # on systems where this approach causes problems.
-AC_SUBST(SHLIBS)
-AC_MSG_CHECKING(SHLIBS)
+AC_SUBST([SHLIBS])
+AC_MSG_CHECKING([SHLIBS])
 case "$ac_sys_system" in
 	*)
 		SHLIBS='$(LIBS)';;
 esac
-AC_MSG_RESULT($SHLIBS)
+AC_MSG_RESULT([$SHLIBS])
 
 dnl perf trampoline is Linux specific and requires an arch-specific
 dnl trampoline in asssembly.
@@ -3462,9 +3404,9 @@ AS_VAR_IF([perf_trampoline], [yes], [
 AC_SUBST([PERF_TRAMPOLINE_OBJ])
 
 # checks for libraries
-AC_CHECK_LIB(sendfile, sendfile)
-AC_CHECK_LIB(dl, dlopen)	# Dynamic linking for SunOS/Solaris and SYSV
-AC_CHECK_LIB(dld, shl_load)	# Dynamic linking for HP-UX
+AC_CHECK_LIB([sendfile], [sendfile])
+AC_CHECK_LIB([dl], [dlopen])       # Dynamic linking for SunOS/Solaris and SYSV
+AC_CHECK_LIB([dld], [shl_load])    # Dynamic linking for HP-UX
 
 
 dnl check for uuid dependencies
@@ -3477,9 +3419,9 @@ dnl AIX provides support for RFC4122 (uuid) in libc.a starting with AIX 6.1
 dnl (anno 2007). FreeBSD and OpenBSD provides support in libc as well.
 dnl Little-endian FreeBSD, OpenBSD and NetBSD needs encoding into an octet
 dnl stream in big-endian byte-order
-AC_CHECK_HEADERS([uuid.h], [
-  AC_CHECK_FUNCS([uuid_create uuid_enc_be], [
-    have_uuid=yes
+AC_CHECK_HEADERS([uuid.h],
+  [AC_CHECK_FUNCS([uuid_create uuid_enc_be],
+    [have_uuid=yes
     LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""}
     LIBUUID_LIBS=${LIBUUID_LIBS-""}
   ])
@@ -3487,8 +3429,8 @@ AC_CHECK_HEADERS([uuid.h], [
 
 AS_VAR_IF([have_uuid], [missing], [
   PKG_CHECK_MODULES(
-    [LIBUUID], [uuid >= 2.20], [
-      dnl linux-util's libuuid has uuid_generate_time_safe() since v2.20 (2011)
+    [LIBUUID], [uuid >= 2.20],
+      [dnl linux-util's libuuid has uuid_generate_time_safe() since v2.20 (2011)
       dnl and provides <uuid.h>.
       have_uuid=yes
       AC_DEFINE([HAVE_UUID_H], [1])
@@ -3499,11 +3441,9 @@ AS_VAR_IF([have_uuid], [missing], [
         LDFLAGS="$LDFLAGS $LIBUUID_LIBS"
         AC_CHECK_HEADERS([uuid/uuid.h], [
           PY_CHECK_LIB([uuid], [uuid_generate_time], [have_uuid=yes])
-          PY_CHECK_LIB([uuid], [uuid_generate_time_safe], [
-            have_uuid=yes
-            AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1])
-          ])
-        ])
+          PY_CHECK_LIB([uuid], [uuid_generate_time_safe],
+            [have_uuid=yes
+            AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1]) ]) ])
         AS_VAR_IF([have_uuid], [yes], [
           LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""}
           LIBUUID_LIBS=${LIBUUID_LIBS-"-luuid"}
@@ -3529,37 +3469,37 @@ AS_VAR_IF([have_uuid], [missing], [have_uuid=no])
 # 'Real Time' functions on Solaris
 # posix4 on Solaris 2.6
 # pthread (first!) on Linux
-AC_SEARCH_LIBS(sem_init, pthread rt posix4)
+AC_SEARCH_LIBS([sem_init], [pthread rt posix4])
 
 # check if we need libintl for locale functions
-AC_CHECK_LIB(intl, textdomain,
-	[AC_DEFINE(WITH_LIBINTL, 1,
+AC_CHECK_LIB([intl], [textdomain],
+	[AC_DEFINE([WITH_LIBINTL], [1],
 	[Define to 1 if libintl is needed for locale functions.])
         LIBS="-lintl $LIBS"])
 
 # checks for system dependent C++ extensions support
 case "$ac_sys_system" in
-	AIX*)	AC_MSG_CHECKING(for genuine AIX C++ extensions support)
+	AIX*)	AC_MSG_CHECKING([for genuine AIX C++ extensions support])
 		AC_LINK_IFELSE([
-		  AC_LANG_PROGRAM([[#include <load.h>]],
+		  AC_LANG_PROGRAM([[@%:@include <load.h>]],
 				  [[loadAndInit("", 0, "")]])
 		],[
-		  AC_DEFINE(AIX_GENUINE_CPLUSPLUS, 1,
+		  AC_DEFINE([AIX_GENUINE_CPLUSPLUS], [1],
                       [Define for AIX if your compiler is a genuine IBM xlC/xlC_r
                        and you want support for AIX C++ shared extension modules.])
-		  AC_MSG_RESULT(yes)
+		  AC_MSG_RESULT([yes])
 		],[
-		  AC_MSG_RESULT(no)
+		  AC_MSG_RESULT([no])
 		])
 dnl The AIX_BUILDDATE is obtained from the kernel fileset - bos.mp64
 # BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the platform_tag
 # of the AIX system used to build/package Python executable. This tag serves
 # as a baseline for bdist module packages
-               AC_MSG_CHECKING(for the system builddate)
+               AC_MSG_CHECKING([for the system builddate])
                AIX_BUILDDATE=$(lslpp -Lcq bos.mp64 | awk -F:  '{ print $NF }')
                AC_DEFINE_UNQUOTED([AIX_BUILDDATE], [$AIX_BUILDDATE],
                    [BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the PEP425 tag of the build system.])
-               AC_MSG_RESULT($AIX_BUILDDATE)
+               AC_MSG_RESULT([$AIX_BUILDDATE])
                ;;
 	*) ;;
 esac
@@ -3589,33 +3529,36 @@ if test "$ac_cv_aligned_required" = yes ; then
 fi
 
 # str, bytes and memoryview hash algorithm
-AH_TEMPLATE(Py_HASH_ALGORITHM,
+AH_TEMPLATE([Py_HASH_ALGORITHM],
   [Define hash algorithm for str, bytes and memoryview.
    SipHash24: 1, FNV: 2, SipHash13: 3, externally defined: 0])
 
-AC_MSG_CHECKING(for --with-hash-algorithm)
+AC_MSG_CHECKING([for --with-hash-algorithm])
 dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output
-AC_ARG_WITH(hash_algorithm,
-            AS_HELP_STRING([--with-hash-algorithm=@<:@fnv|siphash13|siphash24@:>@],
-                           [select hash algorithm for use in Python/pyhash.c (default is SipHash13)]),
+AC_ARG_WITH(
+  [hash_algorithm],
+  [AS_HELP_STRING(
+    [--with-hash-algorithm=@<:@fnv|siphash13|siphash24@:>@],
+    [select hash algorithm for use in Python/pyhash.c (default is SipHash13)]
+  )],
 [
-AC_MSG_RESULT($withval)
+AC_MSG_RESULT([$withval])
 case "$withval" in
     siphash13)
-        AC_DEFINE(Py_HASH_ALGORITHM, 3)
+        AC_DEFINE([Py_HASH_ALGORITHM], [3])
         ;;
     siphash24)
-        AC_DEFINE(Py_HASH_ALGORITHM, 1)
+        AC_DEFINE([Py_HASH_ALGORITHM], [1])
         ;;
     fnv)
-        AC_DEFINE(Py_HASH_ALGORITHM, 2)
+        AC_DEFINE([Py_HASH_ALGORITHM], [2])
         ;;
     *)
         AC_MSG_ERROR([unknown hash algorithm '$withval'])
         ;;
 esac
 ],
-[AC_MSG_RESULT(default)])
+[AC_MSG_RESULT([default])])
 
 validate_tzpath() {
     # Checks that each element of the path is an absolute path
@@ -3633,10 +3576,13 @@ validate_tzpath() {
 }
 
 TZPATH="/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo"
-AC_MSG_CHECKING(for --with-tzpath)
-AC_ARG_WITH(tzpath,
-            AS_HELP_STRING([--with-tzpath=<list of absolute paths separated by pathsep>]
-                           [Select the default time zone search path for zoneinfo.TZPATH]),
+AC_MSG_CHECKING([for --with-tzpath])
+AC_ARG_WITH(
+  [tzpath],
+  [AS_HELP_STRING(
+    [--with-tzpath=<list of absolute paths separated by pathsep>],
+    [Select the default time zone search path for zoneinfo.TZPATH]
+  )],
 [
 case "$withval" in
     yes)
@@ -3645,41 +3591,47 @@ case "$withval" in
     *)
         validate_tzpath "$withval"
         TZPATH="$withval"
-        AC_MSG_RESULT("$withval")
+        AC_MSG_RESULT(["$withval"])
         ;;
 esac
 ],
 [validate_tzpath "$TZPATH"
- AC_MSG_RESULT("$TZPATH")])
-AC_SUBST(TZPATH)
+ AC_MSG_RESULT(["$TZPATH"])])
+AC_SUBST([TZPATH])
 
 # Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl.
-AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4
-AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets
+AC_CHECK_LIB([nsl], [t_open], [LIBS="-lnsl $LIBS"]) # SVR4
+AC_CHECK_LIB([socket], [socket], [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets
 
 case $ac_sys_system/$ac_sys_release in
     Haiku*)
-        AC_CHECK_LIB(network, socket, [LIBS="-lnetwork $LIBS"], [], $LIBS)
+        AC_CHECK_LIB([network], [socket], [LIBS="-lnetwork $LIBS"], [], [$LIBS])
     ;;
 esac
 
-AC_MSG_CHECKING(for --with-libs)
-AC_ARG_WITH(libs,
-            AS_HELP_STRING([--with-libs='lib1 ...'], [link against additional libs (default is no)]),
+AC_MSG_CHECKING([for --with-libs])
+AC_ARG_WITH(
+  [libs],
+  [AS_HELP_STRING(
+    [--with-libs='lib1 ...'],
+    [link against additional libs (default is no)]
+  )],
 [
-AC_MSG_RESULT($withval)
+AC_MSG_RESULT([$withval])
 LIBS="$withval $LIBS"
 ],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
 # Check for use of the system expat library
-AC_MSG_CHECKING(for --with-system-expat)
-AC_ARG_WITH(system_expat,
-            AS_HELP_STRING([--with-system-expat], [build pyexpat module using an installed expat library, see Doc/library/pyexpat.rst (default is no)]),
-            [],
-            [with_system_expat="no"])
+AC_MSG_CHECKING([for --with-system-expat])
+AC_ARG_WITH(
+  [system_expat],
+  [AS_HELP_STRING(
+     [--with-system-expat],
+     [build pyexpat module using an installed expat library, see Doc/library/pyexpat.rst (default is no)]
+  )], [], [with_system_expat="no"])
 
-AC_MSG_RESULT($with_system_expat)
+AC_MSG_RESULT([$with_system_expat])
 
 AS_VAR_IF([with_system_expat], [yes], [
   LIBEXPAT_CFLAGS=${LIBEXPAT_CFLAGS-""}
@@ -3747,19 +3699,23 @@ AS_VAR_IF([have_libffi], [yes], [
     CFLAGS="$LIBFFI_CFLAGS $CFLAGS"
     LDFLAGS="$LIBFFI_LIBS $LDFLAGS"
 
-    PY_CHECK_FUNC([ffi_prep_cif_var], [#include <ffi.h>])
-    PY_CHECK_FUNC([ffi_prep_closure_loc], [#include <ffi.h>])
-    PY_CHECK_FUNC([ffi_closure_alloc], [#include <ffi.h>])
+    PY_CHECK_FUNC([ffi_prep_cif_var], [@%:@include <ffi.h>])
+    PY_CHECK_FUNC([ffi_prep_closure_loc], [@%:@include <ffi.h>])
+    PY_CHECK_FUNC([ffi_closure_alloc], [@%:@include <ffi.h>])
   ])
 ])
 
 # Check for use of the system libmpdec library
-AC_MSG_CHECKING(for --with-system-libmpdec)
-AC_ARG_WITH(system_libmpdec,
-            AS_HELP_STRING([--with-system-libmpdec], [build _decimal module using an installed libmpdec library, see Doc/library/decimal.rst (default is no)]),
-            [],
-            [with_system_libmpdec="no"])
-AC_MSG_RESULT($with_system_libmpdec)
+AC_MSG_CHECKING([for --with-system-libmpdec])
+AC_ARG_WITH(
+  [system_libmpdec],
+  [AS_HELP_STRING(
+    [--with-system-libmpdec],
+    [build _decimal module using an installed libmpdec library, see Doc/library/decimal.rst (default is no)]
+  )],
+  [],
+  [with_system_libmpdec="no"])
+AC_MSG_RESULT([$with_system_libmpdec])
 
 AS_VAR_IF([with_system_libmpdec], [yes], [
   LIBMPDEC_CFLAGS=${LIBMPDEC_CFLAGS-""}
@@ -3780,22 +3736,26 @@ AC_SUBST([LIBMPDEC_CFLAGS])
 AC_SUBST([LIBMPDEC_INTERNAL])
 
 # Check whether _decimal should use a coroutine-local or thread-local context
-AC_MSG_CHECKING(for --with-decimal-contextvar)
-AC_ARG_WITH(decimal_contextvar,
-            AS_HELP_STRING([--with-decimal-contextvar], [build _decimal module using a coroutine-local rather than a thread-local context (default is yes)]),
-            [],
-            [with_decimal_contextvar="yes"])
+AC_MSG_CHECKING([for --with-decimal-contextvar])
+AC_ARG_WITH(
+  [decimal_contextvar],
+  [AS_HELP_STRING(
+    [--with-decimal-contextvar],
+    [build _decimal module using a coroutine-local rather than a thread-local context (default is yes)]
+  )],
+  [],
+  [with_decimal_contextvar="yes"])
 
 if test "$with_decimal_contextvar" != "no"
 then
-    AC_DEFINE(WITH_DECIMAL_CONTEXTVAR, 1,
+    AC_DEFINE([WITH_DECIMAL_CONTEXTVAR], [1],
       [Define if you want build the _decimal module using a coroutine-local rather than a thread-local context])
 fi
 
-AC_MSG_RESULT($with_decimal_contextvar)
+AC_MSG_RESULT([$with_decimal_contextvar])
 
 # Check for libmpdec machine flavor
-AC_MSG_CHECKING(for decimal libmpdec machine)
+AC_MSG_CHECKING([for decimal libmpdec machine])
 AS_CASE([$ac_sys_system],
   [Darwin*], [libmpdec_system=Darwin],
   [SunOS*], [libmpdec_system=sunos],
@@ -3853,40 +3813,12 @@ if test "$have_glibc_memmove_bug" = yes; then
 fi
 
 
-dnl check for NIS / libnsl dependencies
-dnl libnsl dependencies include tirpc includes and lib
-PKG_CHECK_MODULES([LIBNSL], [libnsl], [have_nis=yes], [
-  LIBNSL_CFLAGS=${LIBNSL_CFLAGS-""}
-  WITH_SAVE_ENV([
-    AC_SEARCH_LIBS([yp_match], [nsl], [have_nis=yes], [have_nis=no])
-  ])
-  AS_CASE([$ac_cv_search_yp_match],
-    [no], [libnsl=""],
-    ["none required"], [libnsl=""],
-    [libnsl="$ac_cv_search_yp_match"]
-  )
-  LIBNSL_LIBS=${LIBNSL_LIBS-$libnsl}
-])
-
-AS_VAR_IF([have_nis], [yes], [
-  WITH_SAVE_ENV([
-    CPPFLAGS="$CPPFLAGS $LIBNSL_CFLAGS"
-    AC_CHECK_HEADERS([rpc/rpc.h])
-  ])
-])
-
-dnl On NetBSD, when using OSS audio, you need to link against libossaudio
-AS_CASE([$ac_sys_system],
-  [NetBSD*], [OSSAUDIODEV_LIBS="-lossaudio"],
-  [OSSAUDIODEV_LIBS=""]
-)
-
 dnl detect sqlite3 from Emscripten emport
 PY_CHECK_EMSCRIPTEN_PORT([LIBSQLITE3], [-sUSE_SQLITE3])
 
 dnl Check for SQLite library. Use pkg-config if available.
 PKG_CHECK_MODULES(
-  [LIBSQLITE3], [sqlite3 >= 3.7.15], [], [
+  [LIBSQLITE3], [sqlite3 >= 3.15.2], [], [
     LIBSQLITE3_CFLAGS=${LIBSQLITE3_CFLAGS-""}
     LIBSQLITE3_LIBS=${LIBSQLITE3_LIBS-"-lsqlite3"}
   ]
@@ -3912,8 +3844,8 @@ dnl hence CPPFLAGS instead of CFLAGS.
     AC_COMPILE_IFELSE([
       AC_LANG_PROGRAM([
         #include <sqlite3.h>
-        #if SQLITE_VERSION_NUMBER < 3007015
-        #  error "SQLite 3.7.15 or higher required"
+        #if SQLITE_VERSION_NUMBER < 3015002
+        #  error "SQLite 3.15.2 or higher required"
         #endif
       ], [])
     ], [
@@ -4135,9 +4067,13 @@ AC_CHECK_HEADERS([db.h], [
 
 # Check for --with-dbmliborder
 AC_MSG_CHECKING([for --with-dbmliborder])
-AC_ARG_WITH(dbmliborder,
-            AS_HELP_STRING([--with-dbmliborder=db1:db2:...], [override order to check db backends for dbm; a valid value is a colon separated string with the backend names `ndbm', `gdbm' and `bdb'.]),
-[], [with_dbmliborder=gdbm:ndbm:bdb])
+AC_ARG_WITH(
+  [dbmliborder],
+  [AS_HELP_STRING(
+    [--with-dbmliborder=db1:db2:...],
+    [override order to check db backends for dbm; a valid value is a colon separated string with the backend names `ndbm', `gdbm' and `bdb'.]
+  )],
+  [], [with_dbmliborder=gdbm:ndbm:bdb])
 
 have_gdbm_dbmliborder=no
 as_save_IFS=$IFS
@@ -4193,13 +4129,13 @@ AC_MSG_RESULT([$DBM_CFLAGS $DBM_LIBS])
 
 # Templates for things AC_DEFINEd more than once.
 # For a single AC_DEFINE, no template is needed.
-AH_TEMPLATE(_REENTRANT,
+AH_TEMPLATE([_REENTRANT],
   [Define to force use of thread-safe errno, h_errno, and other functions])
 
 if test "$ac_cv_pthread_is_default" = yes
 then
     # Defining _REENTRANT on system with POSIX threads should not hurt.
-    AC_DEFINE(_REENTRANT)
+    AC_DEFINE([_REENTRANT])
     posix_threads=yes
     if test "$ac_sys_system" = "SunOS"; then
         CFLAGS="$CFLAGS -D_REENTRANT"
@@ -4233,17 +4169,17 @@ else
     # According to the POSIX spec, a pthreads implementation must
     # define _POSIX_THREADS in unistd.h. Some apparently don't
     # (e.g. gnu pth with pthread emulation)
-    AC_MSG_CHECKING(for _POSIX_THREADS in unistd.h)
-    AC_EGREP_CPP(yes,
+    AC_MSG_CHECKING([for _POSIX_THREADS in unistd.h])
+    AC_EGREP_CPP([yes],
     [
 #include <unistd.h>
 #ifdef _POSIX_THREADS
 yes
 #endif
     ], unistd_defines_pthreads=yes, unistd_defines_pthreads=no)
-    AC_MSG_RESULT($unistd_defines_pthreads)
+    AC_MSG_RESULT([$unistd_defines_pthreads])
 
-    AC_DEFINE(_REENTRANT)
+    AC_DEFINE([_REENTRANT])
     # Just looking for pthread_create in libpthread is not enough:
     # on HP/UX, pthread.h renames pthread_create to a different symbol name.
     # So we really have to include pthread.h, and then link.
@@ -4257,26 +4193,26 @@ yes
 
 void * start_routine (void *arg) { exit (0); }]], [[
 pthread_create (NULL, NULL, start_routine, NULL)]])],[
-    AC_MSG_RESULT(yes)
+    AC_MSG_RESULT([yes])
     posix_threads=yes
     ],[
     LIBS=$_libs
-    AC_CHECK_FUNC(pthread_detach, [
+    AC_CHECK_FUNC([pthread_detach], [
     posix_threads=yes
     ],[
-    AC_CHECK_LIB(pthreads, pthread_create, [
+    AC_CHECK_LIB([pthreads], [pthread_create], [
     posix_threads=yes
     LIBS="$LIBS -lpthreads"
     ], [
-    AC_CHECK_LIB(c_r, pthread_create, [
+    AC_CHECK_LIB([c_r], [pthread_create], [
     posix_threads=yes
     LIBS="$LIBS -lc_r"
     ], [
-    AC_CHECK_LIB(pthread, __pthread_create_system, [
+    AC_CHECK_LIB([pthread], [__pthread_create_system], [
     posix_threads=yes
     LIBS="$LIBS -lpthread"
     ], [
-    AC_CHECK_LIB(cma, pthread_create, [
+    AC_CHECK_LIB([cma], [pthread_create], [
     posix_threads=yes
     LIBS="$LIBS -lcma"
     ],[
@@ -4286,7 +4222,7 @@ pthread_create (NULL, NULL, start_routine, NULL)]])],[
     )
     ])])])])])])
 
-    AC_CHECK_LIB(mpc, usconfig, [
+    AC_CHECK_LIB([mpc], [usconfig], [
     LIBS="$LIBS -lmpc"
     ])
 
@@ -4294,23 +4230,23 @@ fi
 
 if test "$posix_threads" = "yes"; then
       if test "$unistd_defines_pthreads" = "no"; then
-         AC_DEFINE(_POSIX_THREADS, 1,
+         AC_DEFINE([_POSIX_THREADS], [1],
          [Define if you have POSIX threads,
           and your system does not define that.])
       fi
 
       # Bug 662787: Using semaphores causes unexplicable hangs on Solaris 8.
       case  $ac_sys_system/$ac_sys_release in
-      SunOS/5.6) AC_DEFINE(HAVE_PTHREAD_DESTRUCTOR, 1,
+      SunOS/5.6) AC_DEFINE([HAVE_PTHREAD_DESTRUCTOR], [1],
                        [Defined for Solaris 2.6 bug in pthread header.])
 		       ;;
-      SunOS/5.8) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
+      SunOS/5.8) AC_DEFINE([HAVE_BROKEN_POSIX_SEMAPHORES], [1],
 		       [Define if the Posix semaphores do not work on your system])
 		       ;;
-      AIX/*) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
+      AIX/*) AC_DEFINE([HAVE_BROKEN_POSIX_SEMAPHORES], [1],
 		       [Define if the Posix semaphores do not work on your system])
 		       ;;
-      NetBSD/*) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
+      NetBSD/*) AC_DEFINE([HAVE_BROKEN_POSIX_SEMAPHORES], [1],
 		       [Define if the Posix semaphores do not work on your system])
 		       ;;
       esac
@@ -4335,16 +4271,17 @@ if test "$posix_threads" = "yes"; then
       [ac_cv_pthread_system_supported=no])
       ])
       if test "$ac_cv_pthread_system_supported" = "yes"; then
-        AC_DEFINE(PTHREAD_SYSTEM_SCHED_SUPPORTED, 1, [Defined if PTHREAD_SCOPE_SYSTEM supported.])
+        AC_DEFINE([PTHREAD_SYSTEM_SCHED_SUPPORTED], [1],
+                  [Defined if PTHREAD_SCOPE_SYSTEM supported.])
       fi
-      AC_CHECK_FUNCS(pthread_sigmask,
+      AC_CHECK_FUNCS([pthread_sigmask],
         [case $ac_sys_system in
         CYGWIN*)
-          AC_DEFINE(HAVE_BROKEN_PTHREAD_SIGMASK, 1,
+          AC_DEFINE([HAVE_BROKEN_PTHREAD_SIGMASK], [1],
             [Define if pthread_sigmask() does not work on your system.])
             ;;
         esac])
-      AC_CHECK_FUNCS(pthread_getcpuclockid)
+      AC_CHECK_FUNCS([pthread_getcpuclockid])
 fi
 
 AS_VAR_IF([posix_threads], [stub], [
@@ -4352,18 +4289,20 @@ AS_VAR_IF([posix_threads], [stub], [
 ])
 
 # Check for enable-ipv6
-AH_TEMPLATE(ENABLE_IPV6, [Define if --enable-ipv6 is specified])
+AH_TEMPLATE([ENABLE_IPV6], [Define if --enable-ipv6 is specified])
 AC_MSG_CHECKING([if --enable-ipv6 is specified])
-AC_ARG_ENABLE(ipv6,
-    AS_HELP_STRING([--enable-ipv6],
-               [enable ipv6 (with ipv4) support, see Doc/library/socket.rst (default is yes if supported)]),
+AC_ARG_ENABLE([ipv6],
+  [AS_HELP_STRING(
+    [--enable-ipv6],
+    [enable ipv6 (with ipv4) support, see Doc/library/socket.rst (default is yes if supported)]
+  )],
 [ case "$enableval" in
   no)
-       AC_MSG_RESULT(no)
+       AC_MSG_RESULT([no])
        ipv6=no
        ;;
-  *)   AC_MSG_RESULT(yes)
-       AC_DEFINE(ENABLE_IPV6)
+  *)   AC_MSG_RESULT([yes])
+       AC_DEFINE([ENABLE_IPV6])
        ipv6=yes
        ;;
   esac ],
@@ -4372,7 +4311,7 @@ AC_ARG_ENABLE(ipv6,
 dnl the check does not work on cross compilation case...
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* AF_INET6 available check */
 #include <sys/types.h>
-#include <sys/socket.h>]],
+@%:@include <sys/socket.h>]],
 [[int domain = AF_INET6;]])],[
   ipv6=yes
 ],[
@@ -4386,23 +4325,23 @@ AS_CASE([$ac_sys_system],
 AC_MSG_RESULT([$ipv6])
 
 if test "$ipv6" = "yes"; then
-	AC_MSG_CHECKING(if RFC2553 API is available)
+	AC_MSG_CHECKING([if RFC2553 API is available])
 	AC_COMPILE_IFELSE([
 	  AC_LANG_PROGRAM([[#include <sys/types.h>
-#include <netinet/in.h>]],
+@%:@include <netinet/in.h>]],
 			  [[struct sockaddr_in6 x;
 			    x.sin6_scope_id;]])
 	],[
-	  AC_MSG_RESULT(yes)
+	  AC_MSG_RESULT([yes])
 	  ipv6=yes
 	],[
-	  AC_MSG_RESULT(no, IPv6 disabled)
+	  AC_MSG_RESULT([no], [IPv6 disabled])
 	  ipv6=no
 	])
 fi
 
 if test "$ipv6" = "yes"; then
-	AC_DEFINE(ENABLE_IPV6)
+	AC_DEFINE([ENABLE_IPV6])
 fi
 ])
 
@@ -4417,20 +4356,20 @@ if test "$ipv6" = "yes"; then
 		case $i in
 		inria)
 			dnl http://www.kame.net/
-			AC_EGREP_CPP(yes, [
+			AC_EGREP_CPP([yes], [
 #include <netinet/in.h>
 #ifdef IPV6_INRIA_VERSION
 yes
-#endif],
+@%:@endif],
 				[ipv6type=$i])
 			;;
 		kame)
 			dnl http://www.kame.net/
-			AC_EGREP_CPP(yes, [
+			AC_EGREP_CPP([yes], [
 #include <netinet/in.h>
 #ifdef __KAME__
 yes
-#endif],
+@%:@endif],
 				[ipv6type=$i;
 				ipv6lib=inet6
 				ipv6libdir=/usr/local/v6/lib
@@ -4438,11 +4377,11 @@ yes
 			;;
 		linux-glibc)
 			dnl http://www.v6.linux.or.jp/
-			AC_EGREP_CPP(yes, [
+			AC_EGREP_CPP([yes], [
 #include <features.h>
 #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2))
 yes
-#endif],
+@%:@endif],
 				[ipv6type=$i;
 				ipv6trylibc=yes])
 			;;
@@ -4464,32 +4403,32 @@ yes
                         fi
 			;;
 		toshiba)
-			AC_EGREP_CPP(yes, [
+			AC_EGREP_CPP([yes], [
 #include <sys/param.h>
 #ifdef _TOSHIBA_INET6
 yes
-#endif],
+@%:@endif],
 				[ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib])
 			;;
 		v6d)
-			AC_EGREP_CPP(yes, [
+			AC_EGREP_CPP([yes], [
 #include </usr/local/v6/include/sys/v6config.h>
 #ifdef __V6D__
 yes
-#endif],
+@%:@endif],
 				[ipv6type=$i;
 				ipv6lib=v6;
 				ipv6libdir=/usr/local/v6/lib;
 				BASECFLAGS="-I/usr/local/v6/include $BASECFLAGS"])
 			;;
 		zeta)
-			AC_EGREP_CPP(yes, [
+			AC_EGREP_CPP([yes], [
 #include <sys/param.h>
 #ifdef _ZETA_MINAMI_INET6
 yes
-#endif],
+@%:@endif],
 				[ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib])
@@ -4499,7 +4438,7 @@ yes
 			break
 		fi
 	done
-	AC_MSG_RESULT($ipv6type)
+	AC_MSG_RESULT([$ipv6type])
 fi
 
 if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
@@ -4522,45 +4461,114 @@ fi
 
 AC_CACHE_CHECK([CAN_RAW_FD_FRAMES], [ac_cv_can_raw_fd_frames], [
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* CAN_RAW_FD_FRAMES available check */
-#include <linux/can/raw.h>]],
+@%:@include <linux/can/raw.h>]],
 [[int can_raw_fd_frames = CAN_RAW_FD_FRAMES;]])],
 [ac_cv_can_raw_fd_frames=yes],
 [ac_cv_can_raw_fd_frames=no])
 ])
 AS_VAR_IF([ac_cv_can_raw_fd_frames], [yes], [
-    AC_DEFINE(HAVE_LINUX_CAN_RAW_FD_FRAMES, 1, [Define if compiling using Linux 3.6 or later.])
+    AC_DEFINE([HAVE_LINUX_CAN_RAW_FD_FRAMES], [1],
+              [Define if compiling using Linux 3.6 or later.])
 ])
 
 AC_CACHE_CHECK([for CAN_RAW_JOIN_FILTERS], [ac_cv_can_raw_join_filters], [
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include <linux/can/raw.h>]],
+@%:@include <linux/can/raw.h>]],
 [[int can_raw_join_filters = CAN_RAW_JOIN_FILTERS;]])],
 [ac_cv_can_raw_join_filters=yes],
 [ac_cv_can_raw_join_filters=no])
 ])
 AS_VAR_IF([ac_cv_can_raw_join_filters], [yes], [
-    AC_DEFINE(HAVE_LINUX_CAN_RAW_JOIN_FILTERS, 1, [Define if compiling using Linux 4.1 or later.])
+    AC_DEFINE([HAVE_LINUX_CAN_RAW_JOIN_FILTERS], [1],
+              [Define if compiling using Linux 4.1 or later.])
 ])
 
 # Check for --with-doc-strings
-AC_MSG_CHECKING(for --with-doc-strings)
-AC_ARG_WITH(doc-strings,
-            AS_HELP_STRING([--with-doc-strings], [enable documentation strings (default is yes)]))
+AC_MSG_CHECKING([for --with-doc-strings])
+AC_ARG_WITH(
+  [doc-strings],
+  [AS_HELP_STRING([--with-doc-strings], [enable documentation strings (default is yes)])])
 
 if test -z "$with_doc_strings"
 then with_doc_strings="yes"
 fi
 if test "$with_doc_strings" != "no"
 then
-    AC_DEFINE(WITH_DOC_STRINGS, 1,
+    AC_DEFINE([WITH_DOC_STRINGS], [1],
       [Define if you want documentation strings in extension modules])
 fi
-AC_MSG_RESULT($with_doc_strings)
+AC_MSG_RESULT([$with_doc_strings])
+
+# Check for stdatomic.h, required for mimalloc.
+AC_CACHE_CHECK([for stdatomic.h], [ac_cv_header_stdatomic_h], [
+AC_LINK_IFELSE(
+[
+  AC_LANG_SOURCE([[
+    #include <stdatomic.h>
+    atomic_int int_var;
+    atomic_uintptr_t uintptr_var;
+    int main() {
+      atomic_store_explicit(&int_var, 5, memory_order_relaxed);
+      atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed);
+      int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst);
+      return 0;
+    }
+  ]])
+],[ac_cv_header_stdatomic_h=yes],[ac_cv_header_stdatomic_h=no])
+])
+
+AS_VAR_IF([ac_cv_header_stdatomic_h], [yes], [
+    AC_DEFINE(HAVE_STD_ATOMIC, 1,
+              [Has stdatomic.h with atomic_int and atomic_uintptr_t])
+])
+
+# Check for GCC >= 4.7 and clang __atomic builtin functions
+AC_CACHE_CHECK([for builtin __atomic_load_n and __atomic_store_n functions], [ac_cv_builtin_atomic], [
+AC_LINK_IFELSE(
+[
+  AC_LANG_SOURCE([[
+    int val;
+    int main() {
+      __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST);
+      (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST);
+      return 0;
+    }
+  ]])
+],[ac_cv_builtin_atomic=yes],[ac_cv_builtin_atomic=no])
+])
+
+AS_VAR_IF([ac_cv_builtin_atomic], [yes], [
+    AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Has builtin __atomic_load_n() and __atomic_store_n() functions])
+])
+
+# --with-mimalloc
+AC_MSG_CHECKING([for --with-mimalloc])
+AC_ARG_WITH([mimalloc],
+  [AS_HELP_STRING([--with-mimalloc],
+                 [build with mimalloc memory allocator (default is yes if C11 stdatomic.h is available.)])],
+  [],
+  [with_mimalloc="$ac_cv_header_stdatomic_h"]
+)
+
+if test "$with_mimalloc" != no; then
+  if test "$ac_cv_header_stdatomic_h" != yes; then
+    # mimalloc-atomic.h wants C11 stdatomic.h on POSIX
+    AC_MSG_ERROR([mimalloc requires stdatomic.h, use --without-mimalloc to disable mimalloc.])
+  fi
+  with_mimalloc=yes
+  AC_DEFINE([WITH_MIMALLOC], [1], [Define if you want to compile in mimalloc memory allocator.])
+  AC_SUBST([MIMALLOC_HEADERS], ['$(MIMALLOC_HEADERS)'])
+fi
+
+AC_MSG_RESULT([$with_mimalloc])
+AC_SUBST([WITH_MIMALLOC])
+AC_SUBST([MIMALLOC_HEADERS])
 
 # Check for Python-specific malloc support
-AC_MSG_CHECKING(for --with-pymalloc)
-AC_ARG_WITH(pymalloc,
-            AS_HELP_STRING([--with-pymalloc], [enable specialized mallocs (default is yes)]))
+AC_MSG_CHECKING([for --with-pymalloc])
+AC_ARG_WITH(
+  [pymalloc],
+  [AS_HELP_STRING([--with-pymalloc], [enable specialized mallocs (default is yes)])])
 
 if test -z "$with_pymalloc"
 then
@@ -4573,16 +4581,17 @@ then
 fi
 if test "$with_pymalloc" != "no"
 then
-    AC_DEFINE(WITH_PYMALLOC, 1,
+    AC_DEFINE([WITH_PYMALLOC], [1],
      [Define if you want to compile in Python-specific mallocs])
 fi
-AC_MSG_RESULT($with_pymalloc)
+AC_MSG_RESULT([$with_pymalloc])
 
 # Check whether objects such as float, tuple and dict are using
 # freelists to optimization memory allocation.
-AC_MSG_CHECKING(for --with-freelists)
-AC_ARG_WITH(freelists,
-            AS_HELP_STRING([--with-freelists], [enable object freelists (default is yes)]))
+AC_MSG_CHECKING([for --with-freelists])
+AC_ARG_WITH(
+  [freelists],
+  [AS_HELP_STRING([--with-freelists], [enable object freelists (default is yes)])])
 
 if test -z "$with_freelists"
 then
@@ -4590,16 +4599,16 @@ then
 fi
 if test "$with_freelists" != "no"
 then
-    AC_DEFINE(WITH_FREELISTS, 1,
+    AC_DEFINE([WITH_FREELISTS], [1],
      [Define if you want to compile in object freelists optimization])
 fi
-AC_MSG_RESULT($with_freelists)
+AC_MSG_RESULT([$with_freelists])
 
 # Check for --with-c-locale-coercion
-AC_MSG_CHECKING(for --with-c-locale-coercion)
-AC_ARG_WITH(c-locale-coercion,
-            AS_HELP_STRING([--with-c-locale-coercion],
-              [enable C locale coercion to a UTF-8 based locale (default is yes)]))
+AC_MSG_CHECKING([for --with-c-locale-coercion])
+AC_ARG_WITH(
+  [c-locale-coercion],
+  [AS_HELP_STRING([--with-c-locale-coercion], [enable C locale coercion to a UTF-8 based locale (default is yes)])])
 
 if test -z "$with_c_locale_coercion"
 then
@@ -4607,16 +4616,18 @@ then
 fi
 if test "$with_c_locale_coercion" != "no"
 then
-    AC_DEFINE(PY_COERCE_C_LOCALE, 1,
+    AC_DEFINE([PY_COERCE_C_LOCALE], [1],
       [Define if you want to coerce the C locale to a UTF-8 based locale])
 fi
-AC_MSG_RESULT($with_c_locale_coercion)
+AC_MSG_RESULT([$with_c_locale_coercion])
 
 # Check for Valgrind support
 AC_MSG_CHECKING([for --with-valgrind])
-AC_ARG_WITH([valgrind],
-  AS_HELP_STRING([--with-valgrind], [enable Valgrind support (default is no)]),,
-  with_valgrind=no)
+AC_ARG_WITH(
+  [valgrind],
+  [AS_HELP_STRING([--with-valgrind], [enable Valgrind support (default is no)])],
+  [], [with_valgrind=no]
+)
 AC_MSG_RESULT([$with_valgrind])
 if test "$with_valgrind" != no; then
     AC_CHECK_HEADER([valgrind/valgrind.h],
@@ -4627,27 +4638,29 @@ if test "$with_valgrind" != no; then
 fi
 
 # Check for DTrace support
-AC_MSG_CHECKING(for --with-dtrace)
-AC_ARG_WITH(dtrace,
-  AS_HELP_STRING([--with-dtrace],[enable DTrace support (default is no)]),,
-  with_dtrace=no)
-AC_MSG_RESULT($with_dtrace)
-
-AC_SUBST(DTRACE)
-AC_SUBST(DFLAGS)
-AC_SUBST(DTRACE_HEADERS)
-AC_SUBST(DTRACE_OBJS)
+AC_MSG_CHECKING([for --with-dtrace])
+AC_ARG_WITH(
+  [dtrace],
+  [AS_HELP_STRING([--with-dtrace], [enable DTrace support (default is no)])],
+  [], [with_dtrace=no])
+AC_MSG_RESULT([$with_dtrace])
+
+AC_SUBST([DTRACE])
+AC_SUBST([DFLAGS])
+AC_SUBST([DTRACE_HEADERS])
+AC_SUBST([DTRACE_OBJS])
 DTRACE=
 DTRACE_HEADERS=
 DTRACE_OBJS=
 
 if test "$with_dtrace" = "yes"
 then
-    AC_PATH_PROG(DTRACE, [dtrace], [not found])
+    AC_PATH_PROG([DTRACE], [dtrace], [not found])
     if test "$DTRACE" = "not found"; then
         AC_MSG_ERROR([dtrace command not found on \$PATH])
     fi
-    AC_DEFINE(WITH_DTRACE, 1, [Define if you want to compile in DTrace support])
+    AC_DEFINE([WITH_DTRACE], [1],
+              [Define if you want to compile in DTrace support])
     DTRACE_HEADERS="Include/pydtrace_probes.h"
 
     # On OS X, DTrace providers do not need to be explicitly compiled and
@@ -4672,25 +4685,25 @@ PLATFORM_OBJS=
 
 AS_CASE([$ac_sys_system],
   [Emscripten], [
-    AS_VAR_APPEND([PLATFORM_OBJS], [' Python/emscripten_signal.o'])
-    AS_VAR_APPEND([PLATFORM_HEADERS], [' $(srcdir)/Include/internal/pycore_emscripten_signal.h'])
+    AS_VAR_APPEND([PLATFORM_OBJS], [' Python/emscripten_signal.o Python/emscripten_trampoline.o'])
+    AS_VAR_APPEND([PLATFORM_HEADERS], [' $(srcdir)/Include/internal/pycore_emscripten_signal.h $(srcdir)/Include/internal/pycore_emscripten_trampoline.h'])
   ],
 )
 AC_SUBST([PLATFORM_HEADERS])
 AC_SUBST([PLATFORM_OBJS])
 
 # -I${DLINCLDIR} is added to the compile rule for importdl.o
-AC_SUBST(DLINCLDIR)
+AC_SUBST([DLINCLDIR])
 DLINCLDIR=.
 
 # the dlopen() function means we might want to use dynload_shlib.o. some
 # platforms have dlopen(), but don't want to use it.
-AC_CHECK_FUNCS(dlopen)
+AC_CHECK_FUNCS([dlopen])
 
 # DYNLOADFILE specifies which dynload_*.o file we will use for dynamic
 # loading of modules.
-AC_SUBST(DYNLOADFILE)
-AC_MSG_CHECKING(DYNLOADFILE)
+AC_SUBST([DYNLOADFILE])
+AC_MSG_CHECKING([DYNLOADFILE])
 if test -z "$DYNLOADFILE"
 then
 	case $ac_sys_system/$ac_sys_release in
@@ -4705,17 +4718,17 @@ then
 	;;
 	esac
 fi
-AC_MSG_RESULT($DYNLOADFILE)
+AC_MSG_RESULT([$DYNLOADFILE])
 if test "$DYNLOADFILE" != "dynload_stub.o"
 then
-	AC_DEFINE(HAVE_DYNAMIC_LOADING, 1,
+	AC_DEFINE([HAVE_DYNAMIC_LOADING], [1],
         [Defined when any dynamic module loading is enabled.])
 fi
 
 # MACHDEP_OBJS can be set to platform-specific object files needed by Python
 
-AC_SUBST(MACHDEP_OBJS)
-AC_MSG_CHECKING(MACHDEP_OBJS)
+AC_SUBST([MACHDEP_OBJS])
+AC_MSG_CHECKING([MACHDEP_OBJS])
 if test -z "$MACHDEP_OBJS"
 then
 	MACHDEP_OBJS=$extra_machdep_objs
@@ -4760,25 +4773,26 @@ AC_CHECK_FUNCS([ \
 # links. Some libc implementations have a stub lchmod implementation that always
 # returns an error.
 if test "$MACHDEP" != linux; then
-  AC_CHECK_FUNCS(lchmod)
+  AC_CHECK_FUNCS([lchmod])
 fi
 
-AC_CHECK_DECL(dirfd,
-    AC_DEFINE(HAVE_DIRFD, 1,
-              Define if you have the 'dirfd' function or macro.), ,
-      [#include <sys/types.h>
-       #include <dirent.h>])
+AC_CHECK_DECL([dirfd],
+              [AC_DEFINE([HAVE_DIRFD], [1],
+                         [Define if you have the 'dirfd' function or macro.])],
+              [],
+              [@%:@include <sys/types.h>
+               @%:@include <dirent.h>])
 
 # For some functions, having a definition is not sufficient, since
 # we want to take their address.
-PY_CHECK_FUNC([chroot], [#include <unistd.h>])
-PY_CHECK_FUNC([link], [#include <unistd.h>])
-PY_CHECK_FUNC([symlink], [#include <unistd.h>])
-PY_CHECK_FUNC([fchdir], [#include <unistd.h>])
-PY_CHECK_FUNC([fsync], [#include <unistd.h>])
-PY_CHECK_FUNC([fdatasync], [#include <unistd.h>])
-PY_CHECK_FUNC([epoll_create], [#include <sys/epoll.h>], [HAVE_EPOLL])
-PY_CHECK_FUNC([epoll_create1], [#include <sys/epoll.h>])
+PY_CHECK_FUNC([chroot], [@%:@include <unistd.h>])
+PY_CHECK_FUNC([link], [@%:@include <unistd.h>])
+PY_CHECK_FUNC([symlink], [@%:@include <unistd.h>])
+PY_CHECK_FUNC([fchdir], [@%:@include <unistd.h>])
+PY_CHECK_FUNC([fsync], [@%:@include <unistd.h>])
+PY_CHECK_FUNC([fdatasync], [@%:@include <unistd.h>])
+PY_CHECK_FUNC([epoll_create], [@%:@include <sys/epoll.h>], [HAVE_EPOLL])
+PY_CHECK_FUNC([epoll_create1], [@%:@include <sys/epoll.h>])
 PY_CHECK_FUNC([kqueue],[
 #include <sys/types.h>
 #include <sys/event.h>
@@ -4788,7 +4802,7 @@ PY_CHECK_FUNC([prlimit], [
 #include <sys/resource.h>
 ])
 
-PY_CHECK_FUNC([_dyld_shared_cache_contains_path], [#include <mach-o/dyld.h>], [HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH])
+PY_CHECK_FUNC([_dyld_shared_cache_contains_path], [@%:@include <mach-o/dyld.h>], [HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH])
 
 PY_CHECK_FUNC([memfd_create], [
 #ifdef HAVE_SYS_MMAN_H
@@ -4805,18 +4819,25 @@ PY_CHECK_FUNC([eventfd], [
 #endif
 ])
 
+PY_CHECK_FUNC([timerfd_create], [
+#ifdef HAVE_SYS_TIMERFD_H
+#include <sys/timerfd.h>
+#endif
+],
+[HAVE_TIMERFD_CREATE])
+
 # On some systems (eg. FreeBSD 5), we would find a definition of the
 # functions ctermid_r, setgroups in the library, but no prototype
 # (e.g. because we use _XOPEN_SOURCE). See whether we can take their
 # address to avoid compiler warnings and potential miscompilations
 # because of the missing prototypes.
 
-PY_CHECK_FUNC([ctermid_r], [#include <stdio.h>])
+PY_CHECK_FUNC([ctermid_r], [@%:@include <stdio.h>])
 
 AC_CACHE_CHECK([for flock declaration], [ac_cv_flock_decl],
   [AC_COMPILE_IFELSE(
     [AC_LANG_PROGRAM(
-      [#include <sys/file.h>],
+      [@%:@include <sys/file.h>],
       [void* p = flock]
     )],
     [ac_cv_flock_decl=yes],
@@ -4825,32 +4846,32 @@ AC_CACHE_CHECK([for flock declaration], [ac_cv_flock_decl],
 ])
 dnl Linking with libbsd may be necessary on AIX for flock function.
 AS_VAR_IF([ac_cv_flock_decl], [yes],
-  AC_CHECK_FUNCS([flock])
-  AC_CHECK_LIB([bsd], [flock], [FCNTL_LIBS="-lbsd"])
-)
+  [AC_CHECK_FUNCS([flock], [],
+    [AC_CHECK_LIB([bsd], [flock], [FCNTL_LIBS="-lbsd"])])])
 
-PY_CHECK_FUNC([getpagesize], [#include <unistd.h>])
+PY_CHECK_FUNC([getpagesize], [@%:@include <unistd.h>])
 
 AC_CACHE_CHECK([for broken unsetenv], [ac_cv_broken_unsetenv],
   [AC_COMPILE_IFELSE(
     [AC_LANG_PROGRAM(
-      [#include <stdlib.h>],
+      [@%:@include <stdlib.h>],
       [int res = unsetenv("DUMMY")])],
     [ac_cv_broken_unsetenv=no],
     [ac_cv_broken_unsetenv=yes]
   )
 ])
 AS_VAR_IF([ac_cv_broken_unsetenv], [yes], [
-  AC_DEFINE(HAVE_BROKEN_UNSETENV, 1, [Define if 'unsetenv' does not return an int.])
+  AC_DEFINE([HAVE_BROKEN_UNSETENV], [1],
+            [Define if 'unsetenv' does not return an int.])
 ])
 
 dnl check for true
-AC_CHECK_PROGS(TRUE, true, /bin/true)
+AC_CHECK_PROGS([TRUE], [true], [/bin/true])
 
 dnl On some systems (e.g. Solaris 9), hstrerror and inet_aton are in -lresolv
 dnl On others, they are in the C library, so we to take no action
-AC_CHECK_LIB(c, inet_aton, [$ac_cv_prog_TRUE],
-  AC_CHECK_LIB(resolv, inet_aton)
+AC_CHECK_LIB([c], [inet_aton], [$ac_cv_prog_TRUE],
+  AC_CHECK_LIB([resolv], [inet_aton])
 )
 
 # On Tru64, chflags seems to be present, but calling it will
@@ -4874,7 +4895,8 @@ if test "$ac_cv_have_chflags" = cross ; then
   AC_CHECK_FUNC([chflags], [ac_cv_have_chflags="yes"], [ac_cv_have_chflags="no"])
 fi
 if test "$ac_cv_have_chflags" = yes ; then
-  AC_DEFINE(HAVE_CHFLAGS, 1, [Define to 1 if you have the 'chflags' function.])
+  AC_DEFINE([HAVE_CHFLAGS], [1],
+            [Define to 1 if you have the 'chflags' function.])
 fi
 
 AC_CACHE_CHECK([for lchflags], [ac_cv_have_lchflags], [dnl
@@ -4893,7 +4915,8 @@ if test "$ac_cv_have_lchflags" = cross ; then
   AC_CHECK_FUNC([lchflags], [ac_cv_have_lchflags="yes"], [ac_cv_have_lchflags="no"])
 fi
 if test "$ac_cv_have_lchflags" = yes ; then
-  AC_DEFINE(HAVE_LCHFLAGS, 1, [Define to 1 if you have the 'lchflags' function.])
+  AC_DEFINE([HAVE_LCHFLAGS], [1],
+            [Define to 1 if you have the 'lchflags' function.])
 fi
 
 dnl Check for compression libraries
@@ -4959,7 +4982,7 @@ PKG_CHECK_MODULES([LIBLZMA], [liblzma], [have_liblzma=yes], [
 ])
 
 dnl PY_CHECK_NETDB_FUNC(FUNCTION)
-AC_DEFUN([PY_CHECK_NETDB_FUNC], [PY_CHECK_FUNC([$1], [#include <netdb.h>])])
+AC_DEFUN([PY_CHECK_NETDB_FUNC], [PY_CHECK_FUNC([$1], [@%:@include <netdb.h>])])
 
 PY_CHECK_NETDB_FUNC([hstrerror])
 dnl not available in WASI yet
@@ -5002,112 +5025,72 @@ PY_CHECK_FUNC([setgroups], [
 
 # check for openpty, login_tty, and forkpty
 
-AC_CHECK_FUNCS(openpty,,
-   AC_CHECK_LIB(util,openpty,
-     [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lutil"],
-     AC_CHECK_LIB(bsd,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lbsd"])
-   )
-)
+AC_CHECK_FUNCS([openpty], [],
+  [AC_CHECK_LIB([util], [openpty],
+    [AC_DEFINE([HAVE_OPENPTY]) LIBS="$LIBS -lutil"],
+    [AC_CHECK_LIB([bsd], [openpty],
+      [AC_DEFINE([HAVE_OPENPTY]) LIBS="$LIBS -lbsd"])])])
 AC_SEARCH_LIBS([login_tty], [util],
  [AC_DEFINE([HAVE_LOGIN_TTY], [1], [Define to 1 if you have the `login_tty' function.])]
 )
-AC_CHECK_FUNCS(forkpty,,
-   AC_CHECK_LIB(util,forkpty,
-     [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lutil"],
-     AC_CHECK_LIB(bsd,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lbsd"])
-   )
-)
+AC_CHECK_FUNCS([forkpty], [],
+  [AC_CHECK_LIB([util], [forkpty],
+    [AC_DEFINE([HAVE_FORKPTY]) LIBS="$LIBS -lutil"],
+    [AC_CHECK_LIB([bsd], [forkpty],
+      [AC_DEFINE([HAVE_FORKPTY]) LIBS="$LIBS -lbsd"])])])
 
 # check for long file support functions
-AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs)
+AC_CHECK_FUNCS([fseek64 fseeko fstatvfs ftell64 ftello statvfs])
 
-AC_REPLACE_FUNCS(dup2)
-AC_CHECK_FUNCS(getpgrp,
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]], [[getpgrp(0);]])],
-    [AC_DEFINE(GETPGRP_HAVE_ARG, 1, [Define if getpgrp() must be called as getpgrp(0).])],
-    [])
-)
-AC_CHECK_FUNCS(setpgrp,
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]], [[setpgrp(0,0);]])],
-    [AC_DEFINE(SETPGRP_HAVE_ARG, 1, [Define if setpgrp() must be called as setpgrp(0, 0).])],
-    [])
-)
+AC_REPLACE_FUNCS([dup2])
+AC_CHECK_FUNCS([getpgrp],
+  [AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([@%:@include <unistd.h>],
+      [getpgrp(0);])],
+    [AC_DEFINE([GETPGRP_HAVE_ARG], [1],
+      [Define if getpgrp() must be called as getpgrp(0).])],
+    [])])
+AC_CHECK_FUNCS([setpgrp],
+  [AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([@%:@include <unistd.h>],
+      [setpgrp(0,0);])],
+    [AC_DEFINE([SETPGRP_HAVE_ARG], [1],
+      [Define if setpgrp() must be called as setpgrp(0, 0).])],
+  [])])
 
 # check for namespace functions
 AC_CHECK_FUNCS([setns unshare])
 
-dnl We search for both crypt and crypt_r as one or the other may be defined
-dnl libxcrypt provides <crypt.h> and libcrypt with crypt_r() since
-dnl at least 3.1.1 from 2015.
-dnl FreeBSD defines crypt_r() in <unistd.h>
-AH_TEMPLATE([HAVE_CRYPT_R], [Define if you have the crypt_r() function.])
-
-PKG_CHECK_MODULES([LIBCRYPT], [libxcrypt >= 3.1.1], [
-  AC_DEFINE([HAVE_CRYPT_R], [1])
-], [
-  WITH_SAVE_ENV([
-    AC_SEARCH_LIBS([crypt_r], [crypt], [
-      AC_DEFINE([HAVE_CRYPT_R], [1])
-      if test "$ac_cv_search_crypt_r" = "none required"; then
-        libcrypt=
-      else
-        libcrypt="$ac_cv_search_crypt_r"
-      fi
-      LIBCRYPT_LIBS=${LIBCRYPT_LIBS-$libcrypt}
-    ])
-  ])
-])
-
-WITH_SAVE_ENV([
-  CPPFLAGS="$CPPFLAGS $LIBCRYPT_CFLAGS"
-  LIBS="$LIBCRYPT_LIBS $LIBS"
-  AC_CACHE_CHECK([for crypt or crypt_r], [ac_cv_crypt_crypt], [
-    AC_LINK_IFELSE([AC_LANG_PROGRAM([
-        #ifdef HAVE_CRYPT_H
-          #include <crypt.h>
-        #endif
-        #include <unistd.h>
-      ], [
-        #ifdef HAVE_CRYPT_R
-          void *x = crypt_r;
-        #else
-          void *x = crypt;
-        #endif
-      ])
-    ], [ac_cv_crypt_crypt=yes], [ac_cv_crypt_crypt=no])
-  ])
-])
-
-AC_CHECK_FUNCS(clock_gettime, [], [
-    AC_CHECK_LIB(rt, clock_gettime, [
+AC_CHECK_FUNCS([clock_gettime], [], [
+    AC_CHECK_LIB([rt], [clock_gettime], [
         LIBS="$LIBS -lrt"
-        AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
-        AC_DEFINE(TIMEMODULE_LIB, [rt],
+        AC_DEFINE([HAVE_CLOCK_GETTIME], [1])
+        AC_DEFINE([TIMEMODULE_LIB], [rt],
                   [Library needed by timemodule.c: librt may be needed for clock_gettime()])
     ])
 ])
 
-AC_CHECK_FUNCS(clock_getres, [], [
-    AC_CHECK_LIB(rt, clock_getres, [
-        AC_DEFINE(HAVE_CLOCK_GETRES, 1)
+AC_CHECK_FUNCS([clock_getres], [], [
+    AC_CHECK_LIB([rt], [clock_getres], [
+        AC_DEFINE([HAVE_CLOCK_GETRES], [1])
     ])
 ])
 
-AC_CHECK_FUNCS(clock_settime, [], [
-    AC_CHECK_LIB(rt, clock_settime, [
-        AC_DEFINE(HAVE_CLOCK_SETTIME, 1)
+AC_CHECK_FUNCS([clock_settime], [], [
+    AC_CHECK_LIB([rt], [clock_settime], [
+        AC_DEFINE([HAVE_CLOCK_SETTIME], [1])
     ])
 ])
 
-AC_CHECK_FUNCS(clock_nanosleep, [], [
-    AC_CHECK_LIB(rt, clock_nanosleep, [
-        AC_DEFINE(HAVE_CLOCK_NANOSLEEP, 1)
+AC_CHECK_FUNCS([clock_nanosleep], [], [
+    AC_CHECK_LIB([rt], [clock_nanosleep], [
+        AC_DEFINE([HAVE_CLOCK_NANOSLEEP], [1])
     ])
 ])
 
-AC_CHECK_FUNCS(nanosleep, [], [
-    AC_CHECK_LIB(rt, nanosleep, [
-        AC_DEFINE(HAVE_NANOSLEEP, 1)
+AC_CHECK_FUNCS([nanosleep], [], [
+    AC_CHECK_LIB([rt], [nanosleep], [
+        AC_DEFINE([HAVE_NANOSLEEP], [1])
     ])
 ])
 
@@ -5125,12 +5108,12 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 ]])],[ac_cv_device_macros=yes], [ac_cv_device_macros=no])
 ])
 AS_VAR_IF([ac_cv_device_macros], [yes], [
-  AC_DEFINE(HAVE_DEVICE_MACROS, 1,
+  AC_DEFINE([HAVE_DEVICE_MACROS], [1],
 	    [Define to 1 if you have the device macros.])
 ])
 
 dnl no longer used, now always defined for backwards compatibility
-AC_DEFINE(SYS_SELECT_WITH_SYS_TIME, 1,
+AC_DEFINE([SYS_SELECT_WITH_SYS_TIME], [1],
   [Define if  you can safely include both <sys/select.h> and <sys/time.h>
    (which you can't on SCO ODT 3.0).])
 
@@ -5260,16 +5243,11 @@ then
     ])])
   ])
 else
-	AC_DEFINE(HAVE_GETADDRINFO, 1, [Define if you have the getaddrinfo function.])
+	AC_DEFINE([HAVE_GETADDRINFO], [1],
+      [Define if you have the getaddrinfo function.])
 fi
 
-AC_CHECK_FUNCS(getnameinfo)
-
-dnl autoconf 2.71 deprecates AC_HEADER_TIME, keep for backwards compatibility
-dnl TIME_WITH_SYS_TIME works on all supported systems that have sys/time.h
-AS_VAR_IF([ac_cv_header_sys_time_h], [yes], [
-  AC_DEFINE([TIME_WITH_SYS_TIME], 1, [Define to 1 if you can safely include both <sys/time.h> and <time.h>.])
-])
+AC_CHECK_FUNCS([getnameinfo])
 
 # checks for structures
 AC_STRUCT_TM
@@ -5285,44 +5263,47 @@ AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_passwd], [], [], [[
   #include <pwd.h>
 ]])
 # Issue #21085: In Cygwin, siginfo_t does not have si_band field.
-AC_CHECK_MEMBERS([siginfo_t.si_band], [], [], [[#include <signal.h>]])
+AC_CHECK_MEMBERS([siginfo_t.si_band], [], [], [[@%:@include <signal.h>]])
 
 AC_CACHE_CHECK([for time.h that defines altzone], [ac_cv_header_time_altzone], [
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[return altzone;]])],
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <time.h>]], [[return altzone;]])],
     [ac_cv_header_time_altzone=yes],
     [ac_cv_header_time_altzone=no])
   ])
 if test $ac_cv_header_time_altzone = yes; then
-  AC_DEFINE(HAVE_ALTZONE, 1, [Define this if your time.h defines altzone.])
+  AC_DEFINE([HAVE_ALTZONE], [1],
+    [Define this if your time.h defines altzone.])
 fi
 
 AC_CACHE_CHECK([for addrinfo], [ac_cv_struct_addrinfo],
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]], [[struct addrinfo a]])],
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <netdb.h>]], [[struct addrinfo a]])],
   [ac_cv_struct_addrinfo=yes],
   [ac_cv_struct_addrinfo=no]))
 if test $ac_cv_struct_addrinfo = yes; then
-	AC_DEFINE(HAVE_ADDRINFO, 1, [struct addrinfo (netdb.h)])
+	AC_DEFINE([HAVE_ADDRINFO], [1], [struct addrinfo (netdb.h)])
 fi
 
 AC_CACHE_CHECK([for sockaddr_storage], [ac_cv_struct_sockaddr_storage],
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #		include <sys/types.h>
-#		include <sys/socket.h>]], [[struct sockaddr_storage s]])],
+@%:@		include <sys/socket.h>]], [[struct sockaddr_storage s]])],
   [ac_cv_struct_sockaddr_storage=yes],
   [ac_cv_struct_sockaddr_storage=no]))
 if test $ac_cv_struct_sockaddr_storage = yes; then
-	AC_DEFINE(HAVE_SOCKADDR_STORAGE, 1, [struct sockaddr_storage (sys/socket.h)])
+	AC_DEFINE([HAVE_SOCKADDR_STORAGE], [1],
+      [struct sockaddr_storage (sys/socket.h)])
 fi
 
 AC_CACHE_CHECK([for sockaddr_alg], [ac_cv_struct_sockaddr_alg],
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #		include <sys/types.h>
 #		include <sys/socket.h>
-#		include <linux/if_alg.h>]], [[struct sockaddr_alg s]])],
+@%:@		include <linux/if_alg.h>]], [[struct sockaddr_alg s]])],
   [ac_cv_struct_sockaddr_alg=yes],
   [ac_cv_struct_sockaddr_alg=no]))
 if test $ac_cv_struct_sockaddr_alg = yes; then
-	AC_DEFINE(HAVE_SOCKADDR_ALG, 1, [struct sockaddr_alg (linux/if_alg.h)])
+	AC_DEFINE([HAVE_SOCKADDR_ALG], [1],
+      [struct sockaddr_alg (linux/if_alg.h)])
 fi
 
 # checks for compiler characteristics
@@ -5334,7 +5315,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[signed char c;]])],
   [ac_cv_working_signed_char_c=yes], [ac_cv_working_signed_char_c=no])
 ])
 AS_VAR_IF([ac_cv_working_signed_char_c], [no], [
-  AC_DEFINE(signed, , [Define to empty if the keyword does not work.])
+  AC_DEFINE([signed], [], [Define to empty if the keyword does not work.])
 ])
 
 AC_CACHE_CHECK([for prototypes], [ac_cv_function_prototypes], [
@@ -5342,7 +5323,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[int foo(int x) { return 0; }]], [[return fo
   [ac_cv_function_prototypes=yes], [ac_cv_function_prototypes=no])
 ])
 AS_VAR_IF([ac_cv_function_prototypes], [yes], [
-  AC_DEFINE(HAVE_PROTOTYPES, 1,
+  AC_DEFINE([HAVE_PROTOTYPES], [1],
      [Define if your compiler supports function prototype])
 ])
 
@@ -5356,20 +5337,21 @@ PY_CHECK_FUNC([socketpair], [
 # check if sockaddr has sa_len member
 AC_CACHE_CHECK([if sockaddr has sa_len member], [ac_cv_struct_sockaddr_sa_len], [
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
-#include <sys/socket.h>]], [[struct sockaddr x;
+@%:@include <sys/socket.h>]], [[struct sockaddr x;
 x.sa_len = 0;]])],
   [ac_cv_struct_sockaddr_sa_len=yes], [ac_cv_struct_sockaddr_sa_len=no])
 ])
 AS_VAR_IF([ac_cv_struct_sockaddr_sa_len], [yes], [
-   AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Define if sockaddr has sa_len member])
+   AC_DEFINE([HAVE_SOCKADDR_SA_LEN], [1],
+     [Define if sockaddr has sa_len member])
 ])
 
 # sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-(
-AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
+AH_TEMPLATE([HAVE_GETHOSTBYNAME_R],
   [Define this if you have some version of gethostbyname_r()])
 
-AC_CHECK_FUNC(gethostbyname_r, [
-  AC_DEFINE(HAVE_GETHOSTBYNAME_R)
+AC_CHECK_FUNC([gethostbyname_r],
+  [AC_DEFINE([HAVE_GETHOSTBYNAME_R])
   AC_MSG_CHECKING([gethostbyname_r with 6 args])
   OLD_CFLAGS=$CFLAGS
   CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
@@ -5384,12 +5366,12 @@ AC_CHECK_FUNC(gethostbyname_r, [
 
     (void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop)
   ]])],[
-    AC_DEFINE(HAVE_GETHOSTBYNAME_R)
-    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
+    AC_DEFINE([HAVE_GETHOSTBYNAME_R])
+    AC_DEFINE([HAVE_GETHOSTBYNAME_R_6_ARG], [1],
     [Define this if you have the 6-arg version of gethostbyname_r().])
-    AC_MSG_RESULT(yes)
+    AC_MSG_RESULT([yes])
   ],[
-    AC_MSG_RESULT(no)
+    AC_MSG_RESULT([no])
     AC_MSG_CHECKING([gethostbyname_r with 5 args])
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #       include <netdb.h>
@@ -5403,12 +5385,12 @@ AC_CHECK_FUNC(gethostbyname_r, [
         (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop)
       ]])],
       [
-        AC_DEFINE(HAVE_GETHOSTBYNAME_R)
-        AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
+        AC_DEFINE([HAVE_GETHOSTBYNAME_R])
+        AC_DEFINE([HAVE_GETHOSTBYNAME_R_5_ARG], [1],
           [Define this if you have the 5-arg version of gethostbyname_r().])
-        AC_MSG_RESULT(yes)
+        AC_MSG_RESULT([yes])
       ], [
-        AC_MSG_RESULT(no)
+        AC_MSG_RESULT([no])
         AC_MSG_CHECKING([gethostbyname_r with 3 args])
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #           include <netdb.h>
@@ -5420,69 +5402,69 @@ AC_CHECK_FUNC(gethostbyname_r, [
             (void) gethostbyname_r(name, he, &data);
           ]])],
           [
-            AC_DEFINE(HAVE_GETHOSTBYNAME_R)
-            AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
+            AC_DEFINE([HAVE_GETHOSTBYNAME_R])
+            AC_DEFINE([HAVE_GETHOSTBYNAME_R_3_ARG], [1],
               [Define this if you have the 3-arg version of gethostbyname_r().])
-            AC_MSG_RESULT(yes)
+            AC_MSG_RESULT([yes])
           ], [
-           AC_MSG_RESULT(no)
+           AC_MSG_RESULT([no])
         ])
     ])
   ])
   CFLAGS=$OLD_CFLAGS
 ], [
-  AC_CHECK_FUNCS(gethostbyname)
+  AC_CHECK_FUNCS([gethostbyname])
 ])
-AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG)
-AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG)
-AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG)
-AC_SUBST(HAVE_GETHOSTBYNAME_R)
-AC_SUBST(HAVE_GETHOSTBYNAME)
+AC_SUBST([HAVE_GETHOSTBYNAME_R_6_ARG])
+AC_SUBST([HAVE_GETHOSTBYNAME_R_5_ARG])
+AC_SUBST([HAVE_GETHOSTBYNAME_R_3_ARG])
+AC_SUBST([HAVE_GETHOSTBYNAME_R])
+AC_SUBST([HAVE_GETHOSTBYNAME])
 
 # checks for system services
 # (none yet)
 
 # Linux requires this for correct f.p. operations
-AC_CHECK_FUNC(__fpu_control,
+AC_CHECK_FUNC([__fpu_control],
   [],
-  [AC_CHECK_LIB(ieee, __fpu_control)
+  [AC_CHECK_LIB([ieee], [__fpu_control])
 ])
 
 # check for --with-libm=...
-AC_SUBST(LIBM)
+AC_SUBST([LIBM])
 case $ac_sys_system in
 Darwin) ;;
 *) LIBM=-lm
 esac
-AC_MSG_CHECKING(for --with-libm=STRING)
-AC_ARG_WITH(libm,
-            AS_HELP_STRING([--with-libm=STRING], [override libm math library to STRING (default is system-dependent)]),
+AC_MSG_CHECKING([for --with-libm=STRING])
+AC_ARG_WITH([libm],
+  [AS_HELP_STRING([--with-libm=STRING], [override libm math library to STRING (default is system-dependent)])],
 [
 if test "$withval" = no
 then LIBM=
-     AC_MSG_RESULT(force LIBM empty)
+     AC_MSG_RESULT([force LIBM empty])
 elif test "$withval" != yes
 then LIBM=$withval
-     AC_MSG_RESULT(set LIBM="$withval")
+     AC_MSG_RESULT([set LIBM="$withval"])
 else AC_MSG_ERROR([proper usage is --with-libm=STRING])
 fi],
-[AC_MSG_RESULT(default LIBM="$LIBM")])
+[AC_MSG_RESULT([default LIBM="$LIBM"])])
 
 # check for --with-libc=...
-AC_SUBST(LIBC)
-AC_MSG_CHECKING(for --with-libc=STRING)
-AC_ARG_WITH(libc,
-            AS_HELP_STRING([--with-libc=STRING], [override libc C library to STRING (default is system-dependent)]),
+AC_SUBST([LIBC])
+AC_MSG_CHECKING([for --with-libc=STRING])
+AC_ARG_WITH([libc],
+  [AS_HELP_STRING([--with-libc=STRING], [override libc C library to STRING (default is system-dependent)])],
 [
 if test "$withval" = no
 then LIBC=
-     AC_MSG_RESULT(force LIBC empty)
+     AC_MSG_RESULT([force LIBC empty])
 elif test "$withval" != yes
 then LIBC=$withval
-     AC_MSG_RESULT(set LIBC="$withval")
+     AC_MSG_RESULT([set LIBC="$withval"])
 else AC_MSG_ERROR([proper usage is --with-libc=STRING])
 fi],
-[AC_MSG_RESULT(default LIBC="$LIBC")])
+[AC_MSG_RESULT([default LIBC="$LIBC"])])
 
 # **************************************
 # * Check for gcc x64 inline assembler *
@@ -5496,7 +5478,7 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
 ])
 
 AS_VAR_IF([ac_cv_gcc_asm_for_x64], [yes], [
-    AC_DEFINE(HAVE_GCC_ASM_FOR_X64, 1,
+    AC_DEFINE([HAVE_GCC_ASM_FOR_X64], [1],
     [Define if we can use x64 gcc inline assembler])
 ])
 
@@ -5507,12 +5489,12 @@ AS_VAR_IF([ac_cv_gcc_asm_for_x64], [yes], [
 AX_C_FLOAT_WORDS_BIGENDIAN
 if test "$ax_cv_c_float_words_bigendian" = "yes"
 then
-  AC_DEFINE(DOUBLE_IS_BIG_ENDIAN_IEEE754, 1,
+  AC_DEFINE([DOUBLE_IS_BIG_ENDIAN_IEEE754], [1],
   [Define if C doubles are 64-bit IEEE 754 binary format, stored
    with the most significant byte first])
 elif test "$ax_cv_c_float_words_bigendian" = "no"
 then
-  AC_DEFINE(DOUBLE_IS_LITTLE_ENDIAN_IEEE754, 1,
+  AC_DEFINE([DOUBLE_IS_LITTLE_ENDIAN_IEEE754], [1],
   [Define if C doubles are 64-bit IEEE 754 binary format, stored
    with the least significant byte first])
 else
@@ -5522,7 +5504,7 @@ else
   # conversions work.
   # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big
   # or little, then it must be this?
-  AC_DEFINE(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754, 1,
+  AC_DEFINE([DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754], [1],
   [Define if C doubles are 64-bit IEEE 754 binary format, stored
    in ARM mixed-endian order (byte order 45670123)])
 fi
@@ -5545,7 +5527,7 @@ AC_LINK_IFELSE(   [AC_LANG_PROGRAM([[]], [[
 ]])],[ac_cv_gcc_asm_for_x87=yes],[ac_cv_gcc_asm_for_x87=no])
 ])
 AS_VAR_IF([ac_cv_gcc_asm_for_x87], [yes], [
-    AC_DEFINE(HAVE_GCC_ASM_FOR_X87, 1,
+    AC_DEFINE([HAVE_GCC_ASM_FOR_X87], [1],
     [Define if we can use gcc inline assembler to get and set x87 control word])
 ])
 
@@ -5557,7 +5539,7 @@ AC_LINK_IFELSE(   [AC_LANG_PROGRAM([[]], [[
 ]])],[ac_cv_gcc_asm_for_mc68881=yes],[ac_cv_gcc_asm_for_mc68881=no])
 ])
 AS_VAR_IF([ac_cv_gcc_asm_for_mc68881], [yes], [
-    AC_DEFINE(HAVE_GCC_ASM_FOR_MC68881, 1,
+    AC_DEFINE([HAVE_GCC_ASM_FOR_MC68881], [1],
     [Define if we can use gcc inline assembler to get and set mc68881 fpcr])
 ])
 
@@ -5597,7 +5579,7 @@ CC="$ac_save_cc"
 ])
 
 AS_VAR_IF([ac_cv_x87_double_rounding], [yes], [
-  AC_DEFINE(X87_DOUBLE_ROUNDING, 1,
+  AC_DEFINE([X87_DOUBLE_ROUNDING], [1],
   [Define if arithmetic is subject to x87-style double rounding issue])
 ])
 
@@ -5689,11 +5671,11 @@ AS_VAR_IF([ac_cv_broken_sem_getvalue], [yes], [
   )
 ])
 
-AC_CHECK_DECLS([RTLD_LAZY, RTLD_NOW, RTLD_GLOBAL, RTLD_LOCAL, RTLD_NODELETE, RTLD_NOLOAD, RTLD_DEEPBIND, RTLD_MEMBER], [], [], [[#include <dlfcn.h>]])
+AC_CHECK_DECLS([RTLD_LAZY, RTLD_NOW, RTLD_GLOBAL, RTLD_LOCAL, RTLD_NODELETE, RTLD_NOLOAD, RTLD_DEEPBIND, RTLD_MEMBER], [], [], [[@%:@include <dlfcn.h>]])
 
 # determine what size digit to use for Python's longs
 AC_MSG_CHECKING([digit size for Python's longs])
-AC_ARG_ENABLE(big-digits,
+AC_ARG_ENABLE([big-digits],
 AS_HELP_STRING([--enable-big-digits@<:@=15|30@:>@],[use big digits (30 or 15 bits) for Python longs (default is 30)]]),
 [case $enable_big_digits in
 yes)
@@ -5705,14 +5687,15 @@ no)
 *)
   AC_MSG_ERROR([bad value $enable_big_digits for --enable-big-digits; value should be 15 or 30]) ;;
 esac
-AC_MSG_RESULT($enable_big_digits)
-AC_DEFINE_UNQUOTED(PYLONG_BITS_IN_DIGIT, $enable_big_digits, [Define as the preferred size in bits of long digits])
+AC_MSG_RESULT([$enable_big_digits])
+AC_DEFINE_UNQUOTED([PYLONG_BITS_IN_DIGIT], [$enable_big_digits],
+  [Define as the preferred size in bits of long digits])
 ],
-[AC_MSG_RESULT(no value specified)])
+[AC_MSG_RESULT([no value specified])])
 
 # check for wchar.h
-AC_CHECK_HEADER(wchar.h, [
-  AC_DEFINE(HAVE_WCHAR_H, 1,
+AC_CHECK_HEADER([wchar.h], [
+  AC_DEFINE([HAVE_WCHAR_H], [1],
   [Define if the compiler provides a wchar.h header file.])
   wchar_h="yes"
 ],
@@ -5722,7 +5705,9 @@ wchar_h="no"
 # determine wchar_t size
 if test "$wchar_h" = yes
 then
-  AC_CHECK_SIZEOF(wchar_t, 4, [#include <wchar.h>])
+  AC_CHECK_SIZEOF([wchar_t], [4], [m4_normalize([
+    #include <wchar.h>
+  ])])
 fi
 
 # check whether wchar_t is signed or not
@@ -5743,18 +5728,18 @@ then
   [ac_cv_wchar_t_signed=yes])])
 fi
 
-AC_MSG_CHECKING(whether wchar_t is usable)
+AC_MSG_CHECKING([whether wchar_t is usable])
 # wchar_t is only usable if it maps to an unsigned type
 if test "$ac_cv_sizeof_wchar_t" -ge 2 \
           -a "$ac_cv_wchar_t_signed" = "no"
 then
-  AC_DEFINE(HAVE_USABLE_WCHAR_T, 1,
+  AC_DEFINE([HAVE_USABLE_WCHAR_T], [1],
   [Define if you have a useable wchar_t type defined in wchar.h; useable
    means wchar_t must be an unsigned type with at least 16 bits. (see
    Include/unicodeobject.h).])
-  AC_MSG_RESULT(yes)
+  AC_MSG_RESULT([yes])
 else
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT([no])
 fi
 
 case $ac_sys_system/$ac_sys_release in
@@ -5765,7 +5750,7 @@ SunOS/*)
       # bpo-43667: In Oracle Solaris, the internal form of wchar_t in
       # non-Unicode locales is not Unicode and hence cannot be used directly.
       # https://docs.oracle.com/cd/E37838_01/html/E61053/gmwke.html
-      AC_DEFINE(HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION, 1,
+      AC_DEFINE([HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION], [1],
       [Define if the internal form of wchar_t in non-Unicode locales
        is not Unicode.])
     fi
@@ -5783,6 +5768,7 @@ AC_C_BIGENDIAN
 #
 # * The Python implementation (always 'cpython-' for us)
 # * The major and minor version numbers
+# * --disable-gil (adds a 't')
 # * --with-pydebug (adds a 'd')
 #
 # Thus for example, Python 3.2 built with wide unicode, pydebug, and pymalloc,
@@ -5791,31 +5777,32 @@ AC_C_BIGENDIAN
 #
 # In Python 3.2 and older, --with-wide-unicode added a 'u' flag.
 # In Python 3.7 and older, --with-pymalloc added a 'm' flag.
-AC_SUBST(SOABI)
-AC_MSG_CHECKING(ABIFLAGS)
-AC_MSG_RESULT($ABIFLAGS)
-AC_MSG_CHECKING(SOABI)
+AC_SUBST([SOABI])
+AC_MSG_CHECKING([ABIFLAGS])
+AC_MSG_RESULT([$ABIFLAGS])
+AC_MSG_CHECKING([SOABI])
 SOABI='cpython-'`echo $VERSION | tr -d .`${ABIFLAGS}${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET}
-AC_MSG_RESULT($SOABI)
+AC_MSG_RESULT([$SOABI])
 
-# Release and debug (Py_DEBUG) ABI are compatible, but not Py_TRACE_REFS ABI
-if test "$Py_DEBUG" = 'true' -a "$with_trace_refs" != "yes"; then
+# Release build, debug build (Py_DEBUG), and trace refs build (Py_TRACE_REFS)
+# are ABI compatible
+if test "$Py_DEBUG" = 'true'; then
   # Similar to SOABI but remove "d" flag from ABIFLAGS
-  AC_SUBST(ALT_SOABI)
+  AC_SUBST([ALT_SOABI])
   ALT_SOABI='cpython-'`echo $VERSION | tr -d .``echo $ABIFLAGS | tr -d d`${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET}
-  AC_DEFINE_UNQUOTED(ALT_SOABI, "${ALT_SOABI}",
+  AC_DEFINE_UNQUOTED([ALT_SOABI], ["${ALT_SOABI}"],
             [Alternative SOABI used in debug build to load C extensions built in release mode])
 fi
 
-AC_SUBST(EXT_SUFFIX)
+AC_SUBST([EXT_SUFFIX])
 EXT_SUFFIX=.${SOABI}${SHLIB_SUFFIX}
 
-AC_MSG_CHECKING(LDVERSION)
+AC_MSG_CHECKING([LDVERSION])
 LDVERSION='$(VERSION)$(ABIFLAGS)'
-AC_MSG_RESULT($LDVERSION)
+AC_MSG_RESULT([$LDVERSION])
 
 # On Android and Cygwin the shared libraries must be linked with libpython.
-AC_SUBST(LIBPYTHON)
+AC_SUBST([LIBPYTHON])
 if test "$PY_ENABLE_SHARED" = "1" && ( test -n "$ANDROID_API_LEVEL" || test "$MACHDEP" = "cygwin"); then
   LIBPYTHON="-lpython${VERSION}${ABIFLAGS}"
 else
@@ -5823,18 +5810,21 @@ else
 fi
 
 
-AC_SUBST(BINLIBDEST)
+AC_SUBST([BINLIBDEST])
 BINLIBDEST='$(LIBDIR)/python$(VERSION)'
 
 
 # Check for --with-platlibdir
 # /usr/$LIDIRNAME/python$VERSION
-AC_SUBST(PLATLIBDIR)
+AC_SUBST([PLATLIBDIR])
 PLATLIBDIR="lib"
-AC_MSG_CHECKING(for --with-platlibdir)
-AC_ARG_WITH(platlibdir,
-            AS_HELP_STRING([--with-platlibdir=DIRNAME],
-            [Python library directory name (default is "lib")]),
+AC_MSG_CHECKING([for --with-platlibdir])
+AC_ARG_WITH(
+  [platlibdir],
+  [AS_HELP_STRING(
+    [--with-platlibdir=DIRNAME],
+    [Python library directory name (default is "lib")]
+  )],
 [
 # ignore 3 options:
 #   --with-platlibdir
@@ -5842,39 +5832,42 @@ AC_ARG_WITH(platlibdir,
 #   --without-platlibdir
 if test -n "$withval" -a "$withval" != yes -a "$withval" != no
 then
-  AC_MSG_RESULT(yes)
+  AC_MSG_RESULT([yes])
   PLATLIBDIR="$withval"
   BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)'
 else
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT([no])
 fi],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
 
 dnl define LIBPL after ABIFLAGS and LDVERSION is defined.
-AC_SUBST(PY_ENABLE_SHARED)
+AC_SUBST([PY_ENABLE_SHARED])
 if test x$PLATFORM_TRIPLET = x; then
   LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}"
 else
   LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}"
 fi
-AC_SUBST(LIBPL)
+AC_SUBST([LIBPL])
 
 # Check for --with-wheel-pkg-dir=PATH
-AC_SUBST(WHEEL_PKG_DIR)
+AC_SUBST([WHEEL_PKG_DIR])
 WHEEL_PKG_DIR=""
-AC_MSG_CHECKING(for --with-wheel-pkg-dir)
-AC_ARG_WITH(wheel-pkg-dir,
-            AS_HELP_STRING([--with-wheel-pkg-dir=PATH],
-            [Directory of wheel packages used by ensurepip (default: none)]),
+AC_MSG_CHECKING([for --with-wheel-pkg-dir])
+AC_ARG_WITH(
+  [wheel-pkg-dir],
+  [AS_HELP_STRING(
+    [--with-wheel-pkg-dir=PATH],
+    [Directory of wheel packages used by ensurepip (default: none)]
+  )],
 [
 if test -n "$withval"; then
-  AC_MSG_RESULT(yes)
+  AC_MSG_RESULT([yes])
   WHEEL_PKG_DIR="$withval"
 else
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT([no])
 fi],
-[AC_MSG_RESULT(no)])
+[AC_MSG_RESULT([no])])
 
 # Check whether right shifting a negative integer extends the sign bit
 # or fills with zeros (like the Cray J90, according to Tim Peters).
@@ -5890,14 +5883,14 @@ int main(void)
 [ac_cv_rshift_extends_sign=yes])])
 if test "$ac_cv_rshift_extends_sign" = no
 then
-  AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS, 1,
+  AC_DEFINE([SIGNED_RIGHT_SHIFT_ZERO_FILLS], [1],
   [Define if i>>j for signed int i does not extend the sign bit
    when i < 0])
 fi
 
 # check for getc_unlocked and related locking functions
 AC_CACHE_CHECK([for getc_unlocked() and friends], [ac_cv_have_getc_unlocked], [
-AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]], [[
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>]], [[
 	FILE *f = fopen("/dev/null", "r");
 	flockfile(f);
 	getc_unlocked(f);
@@ -5905,7 +5898,7 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]], [[
 ]])],[ac_cv_have_getc_unlocked=yes],[ac_cv_have_getc_unlocked=no])])
 if test "$ac_cv_have_getc_unlocked" = yes
 then
-  AC_DEFINE(HAVE_GETC_UNLOCKED, 1,
+  AC_DEFINE([HAVE_GETC_UNLOCKED], [1],
   [Define this if you have flockfile(), getc_unlocked(), and funlockfile()])
 fi
 
@@ -6071,6 +6064,13 @@ AS_VAR_IF([with_readline], [no], [
       AC_DEFINE([HAVE_RL_APPEND_HISTORY], [1], [Define if readline supports append_history])
     ])
 
+    # in readline as well as newer editline (April 2023)
+    AC_CHECK_TYPE([rl_compdisp_func_t],
+                  [AC_DEFINE([HAVE_RL_COMPDISP_FUNC_T], [1],
+                             [Define if readline supports rl_compdisp_func_t])],
+                  [],
+                  [readline_includes])
+
     m4_undefine([readline_includes])
   ])dnl WITH_SAVE_ENV()
 ])
@@ -6092,7 +6092,7 @@ int main(void)
 [ac_cv_broken_nice=no])])
 if test "$ac_cv_broken_nice" = yes
 then
-  AC_DEFINE(HAVE_BROKEN_NICE, 1,
+  AC_DEFINE([HAVE_BROKEN_NICE], [1],
   [Define if nice() returns success/failure instead of the new priority.])
 fi
 
@@ -6122,7 +6122,7 @@ int main(void)
 [ac_cv_broken_poll=no]))
 if test "$ac_cv_broken_poll" = yes
 then
-  AC_DEFINE(HAVE_BROKEN_POLL, 1,
+  AC_DEFINE([HAVE_BROKEN_POLL], [1],
       [Define if poll() sets errno on invalid file descriptors.])
 fi
 
@@ -6197,13 +6197,13 @@ int main(void)
 [ac_cv_working_tzset=no])])
 if test "$ac_cv_working_tzset" = yes
 then
-  AC_DEFINE(HAVE_WORKING_TZSET, 1,
+  AC_DEFINE([HAVE_WORKING_TZSET], [1],
   [Define if tzset() actually switches the local timezone in a meaningful way.])
 fi
 
 # Look for subsecond timestamps in struct stat
 AC_CACHE_CHECK([for tv_nsec in struct stat], [ac_cv_stat_tv_nsec],
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/stat.h>]], [[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <sys/stat.h>]], [[
 struct stat st;
 st.st_mtim.tv_nsec = 1;
 ]])],
@@ -6211,13 +6211,13 @@ st.st_mtim.tv_nsec = 1;
 [ac_cv_stat_tv_nsec=no]))
 if test "$ac_cv_stat_tv_nsec" = yes
 then
-  AC_DEFINE(HAVE_STAT_TV_NSEC, 1,
+  AC_DEFINE([HAVE_STAT_TV_NSEC], [1],
   [Define if you have struct stat.st_mtim.tv_nsec])
 fi
 
 # Look for BSD style subsecond timestamps in struct stat
 AC_CACHE_CHECK([for tv_nsec2 in struct stat], [ac_cv_stat_tv_nsec2],
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/stat.h>]], [[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <sys/stat.h>]], [[
 struct stat st;
 st.st_mtimespec.tv_nsec = 1;
 ]])],
@@ -6225,7 +6225,7 @@ st.st_mtimespec.tv_nsec = 1;
 [ac_cv_stat_tv_nsec2=no]))
 if test "$ac_cv_stat_tv_nsec2" = yes
 then
-  AC_DEFINE(HAVE_STAT_TV_NSEC2, 1,
+  AC_DEFINE([HAVE_STAT_TV_NSEC2], [1],
   [Define if you have struct stat.st_mtimensec])
 fi
 
@@ -6277,9 +6277,11 @@ dnl remove _XOPEN_SOURCE macro from curses cflags. pyconfig.h sets
 dnl the macro to 700.
 CURSES_CFLAGS=$(echo $CURSES_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-if test "$have_curses" = no -a "$ac_sys_system" = "Darwin"; then
+if test "$have_curses" != no -a "$ac_sys_system" = "Darwin"; then
   dnl On macOS, there is no separate /usr/lib/libncursesw nor libpanelw.
-  dnl If we are here, we found a locally-supplied version of libncursesw.
+  dnl System-supplied ncurses combines libncurses/libpanel and supports wide
+  dnl characters, so we can use it like ncursesw.
+  dnl If a locally-supplied version of libncursesw is found, we will use that.
   dnl There should also be a libpanelw.
   dnl _XOPEN_SOURCE defines are usually excluded for macOS, but we need
   dnl _XOPEN_SOURCE_EXTENDED here for ncurses wide char support.
@@ -6352,7 +6354,7 @@ if test "$cross_compiling" = no; then
 fi
 
 # On Solaris, term.h requires curses.h
-AC_CHECK_HEADERS(term.h,,,[
+AC_CHECK_HEADERS([term.h], [], [], [
 #ifdef HAVE_CURSES_H
 #include <curses.h>
 #endif
@@ -6360,7 +6362,7 @@ AC_CHECK_HEADERS(term.h,,,[
 
 # On HP/UX 11.0, mvwdelch is a block with a return statement
 AC_CACHE_CHECK([whether mvwdelch is an expression], [ac_cv_mvwdelch_is_expression],
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <curses.h>]], [[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <curses.h>]], [[
   int rtn;
   rtn = mvwdelch(0,0,0);
 ]])],
@@ -6369,7 +6371,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <curses.h>]], [[
 
 if test "$ac_cv_mvwdelch_is_expression" = yes
 then
-  AC_DEFINE(MVWDELCH_IS_EXPRESSION, 1,
+  AC_DEFINE([MVWDELCH_IS_EXPRESSION], [1],
   [Define if mvwdelch in curses.h is an expression.])
 fi
 
@@ -6391,7 +6393,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 
 if test "$ac_cv_window_has_flags" = yes
 then
-  AC_DEFINE(WINDOW_HAS_FLAGS, 1,
+  AC_DEFINE([WINDOW_HAS_FLAGS], [1],
   [Define if WINDOW in curses.h offers a field _flags.])
 fi
 
@@ -6404,7 +6406,7 @@ AC_DEFUN([PY_CHECK_CURSES_FUNC],
     [py_var],
     [AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM(
-        [#include <curses.h>], [
+        [@%:@include <curses.h>], [
         #ifndef $1
         void *x=$1
         #endif
@@ -6449,14 +6451,14 @@ if test "x$cross_compiling" = xyes; then
   fi
 fi
 
-AC_CHECK_FILE(/dev/ptmx, [], [])
+AC_CHECK_FILE([/dev/ptmx], [], [])
 if test "x$ac_cv_file__dev_ptmx" = xyes; then
-  AC_DEFINE(HAVE_DEV_PTMX, 1,
+  AC_DEFINE([HAVE_DEV_PTMX], [1],
   [Define to 1 if you have the /dev/ptmx device file.])
 fi
-AC_CHECK_FILE(/dev/ptc, [], [])
+AC_CHECK_FILE([/dev/ptc], [], [])
 if test "x$ac_cv_file__dev_ptc" = xyes; then
-  AC_DEFINE(HAVE_DEV_PTC, 1,
+  AC_DEFINE([HAVE_DEV_PTC], [1],
   [Define to 1 if you have the /dev/ptc device file.])
 fi
 
@@ -6465,9 +6467,12 @@ then
 	LIBS="$LIBS -framework CoreFoundation"
 fi
 
-AC_CHECK_TYPE(socklen_t,,
-  AC_DEFINE(socklen_t,int,
-            [Define to `int' if <sys/socket.h> does not define.]),[
+AC_CHECK_TYPE(
+  [socklen_t], [],
+  [AC_DEFINE(
+    [socklen_t], [int],
+    [Define to `int' if <sys/socket.h> does not define.]
+  )], [
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -6493,31 +6498,34 @@ int main(void) {
 [ac_cv_broken_mbstowcs=no]))
 if test "$ac_cv_broken_mbstowcs" = yes
 then
-  AC_DEFINE(HAVE_BROKEN_MBSTOWCS, 1,
+  AC_DEFINE([HAVE_BROKEN_MBSTOWCS], [1],
   [Define if mbstowcs(NULL, "text", 0) does not return the number of
    wide chars that would be converted.])
 fi
 
 # Check for --with-computed-gotos
-AC_MSG_CHECKING(for --with-computed-gotos)
-AC_ARG_WITH(computed-gotos,
-            AS_HELP_STRING([--with-computed-gotos],
-                           [enable computed gotos in evaluation loop (enabled by default on supported compilers)]),
+AC_MSG_CHECKING([for --with-computed-gotos])
+AC_ARG_WITH(
+  [computed-gotos],
+  [AS_HELP_STRING(
+    [--with-computed-gotos],
+    [enable computed gotos in evaluation loop (enabled by default on supported compilers)]
+  )],
 [
 if test "$withval" = yes
 then
-  AC_DEFINE(USE_COMPUTED_GOTOS, 1,
+  AC_DEFINE([USE_COMPUTED_GOTOS], [1],
   [Define if you want to use computed gotos in ceval.c.])
-  AC_MSG_RESULT(yes)
+  AC_MSG_RESULT([yes])
 fi
 if test "$withval" = no
 then
-  AC_DEFINE(USE_COMPUTED_GOTOS, 0,
+  AC_DEFINE([USE_COMPUTED_GOTOS], [0],
   [Define if you want to use computed gotos in ceval.c.])
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT([no])
 fi
 ],
-[AC_MSG_RESULT(no value specified)])
+[AC_MSG_RESULT([no value specified])])
 
 AC_CACHE_CHECK([whether $CC supports computed gotos], [ac_cv_computed_gotos],
 AC_RUN_IFELSE([AC_LANG_SOURCE([[[
@@ -6540,24 +6548,25 @@ LABEL2:
    ac_cv_computed_gotos=no
  fi]))
 case "$ac_cv_computed_gotos" in yes*)
-  AC_DEFINE(HAVE_COMPUTED_GOTOS, 1,
+  AC_DEFINE([HAVE_COMPUTED_GOTOS], [1],
   [Define if the C compiler supports computed gotos.])
 esac
 
 case $ac_sys_system in
 AIX*)
-  AC_DEFINE(HAVE_BROKEN_PIPE_BUF, 1, [Define if the system reports an invalid PIPE_BUF value.]) ;;
+  AC_DEFINE([HAVE_BROKEN_PIPE_BUF], [1],
+    [Define if the system reports an invalid PIPE_BUF value.]) ;;
 esac
 
 
-AC_SUBST(THREADHEADERS)
+AC_SUBST([THREADHEADERS])
 
 for h in `(cd $srcdir;echo Python/thread_*.h)`
 do
   THREADHEADERS="$THREADHEADERS \$(srcdir)/$h"
 done
 
-AC_SUBST(SRCDIRS)
+AC_SUBST([SRCDIRS])
 SRCDIRS="\
   Modules \
   Modules/_blake2 \
@@ -6567,26 +6576,30 @@ SRCDIRS="\
   Modules/_hacl \
   Modules/_io \
   Modules/_multiprocessing \
-  Modules/_sha3 \
   Modules/_sqlite \
   Modules/_sre \
   Modules/_testcapi \
+  Modules/_testinternalcapi \
   Modules/_xxtestfuzz \
   Modules/cjkcodecs \
   Modules/expat \
   Objects \
+  Objects/mimalloc \
+  Objects/mimalloc/prim \
   Parser \
+  Parser/tokenizer \
+  Parser/lexer \
   Programs \
   Python \
   Python/frozen_modules \
   Python/deepfreeze"
-AC_MSG_CHECKING(for build directories)
+AC_MSG_CHECKING([for build directories])
 for dir in $SRCDIRS; do
     if test ! -d $dir; then
         mkdir $dir
     fi
 done
-AC_MSG_RESULT(done)
+AC_MSG_RESULT([done])
 
 # Availability of -O2:
 AC_CACHE_CHECK([for -O2], [ac_cv_compile_o2], [
@@ -6598,7 +6611,7 @@ CFLAGS="$saved_cflags"
 
 # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect:
 # http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html
-AC_MSG_CHECKING(for glibc _FORTIFY_SOURCE/memmove bug)
+AC_MSG_CHECKING([for glibc _FORTIFY_SOURCE/memmove bug])
 saved_cflags="$CFLAGS"
 CFLAGS="-O2 -D_FORTIFY_SOURCE=2"
 if test "$ac_cv_compile_o2" = no; then
@@ -6624,9 +6637,9 @@ int main(void) {
 [have_glibc_memmove_bug=yes],
 [have_glibc_memmove_bug=undefined])
 CFLAGS="$saved_cflags"
-AC_MSG_RESULT($have_glibc_memmove_bug)
+AC_MSG_RESULT([$have_glibc_memmove_bug])
 if test "$have_glibc_memmove_bug" = yes; then
-    AC_DEFINE(HAVE_GLIBC_MEMMOVE_BUG, 1,
+    AC_DEFINE([HAVE_GLIBC_MEMMOVE_BUG], [1],
     [Define if glibc has incorrect _FORTIFY_SOURCE wrappers
      for memmove and bcopy.])
 fi
@@ -6637,7 +6650,7 @@ if test "$ac_cv_gcc_asm_for_x87" = yes; then
     # http://gcc.gnu.org/ml/gcc/2010-11/msg00366.html
     case $CC in
         *gcc*)
-            AC_MSG_CHECKING(for gcc ipa-pure-const bug)
+            AC_MSG_CHECKING([for gcc ipa-pure-const bug])
             saved_cflags="$CFLAGS"
             CFLAGS="-O2"
             AC_RUN_IFELSE([AC_LANG_SOURCE([[
@@ -6661,60 +6674,18 @@ if test "$ac_cv_gcc_asm_for_x87" = yes; then
             [have_ipa_pure_const_bug=yes],
             [have_ipa_pure_const_bug=undefined])
             CFLAGS="$saved_cflags"
-            AC_MSG_RESULT($have_ipa_pure_const_bug)
+            AC_MSG_RESULT([$have_ipa_pure_const_bug])
             if test "$have_ipa_pure_const_bug" = yes; then
-                AC_DEFINE(HAVE_IPA_PURE_CONST_BUG, 1,
+                AC_DEFINE([HAVE_IPA_PURE_CONST_BUG], [1],
                           [Define if gcc has the ipa-pure-const bug.])
             fi
         ;;
     esac
 fi
 
-# Check for stdatomic.h
-AC_CACHE_CHECK([for stdatomic.h], [ac_cv_header_stdatomic_h], [
-AC_LINK_IFELSE(
-[
-  AC_LANG_SOURCE([[
-    #include <stdatomic.h>
-    atomic_int int_var;
-    atomic_uintptr_t uintptr_var;
-    int main(void) {
-      atomic_store_explicit(&int_var, 5, memory_order_relaxed);
-      atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed);
-      int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst);
-      return 0;
-    }
-  ]])
-],[ac_cv_header_stdatomic_h=yes],[ac_cv_header_stdatomic_h=no])
-])
-
-AS_VAR_IF([ac_cv_header_stdatomic_h], [yes], [
-    AC_DEFINE(HAVE_STD_ATOMIC, 1,
-              [Has stdatomic.h with atomic_int and atomic_uintptr_t])
-])
-
-# Check for GCC >= 4.7 and clang __atomic builtin functions
-AC_CACHE_CHECK([for builtin __atomic_load_n and __atomic_store_n functions], [ac_cv_builtin_atomic], [
-AC_LINK_IFELSE(
-[
-  AC_LANG_SOURCE([[
-    int val;
-    int main(void) {
-      __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST);
-      (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST);
-      return 0;
-    }
-  ]])
-],[ac_cv_builtin_atomic=yes],[ac_cv_builtin_atomic=no])
-])
-
-AS_VAR_IF([ac_cv_builtin_atomic], [yes], [
-    AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Has builtin __atomic_load_n() and __atomic_store_n() functions])
-])
-
 # ensurepip option
-AC_MSG_CHECKING(for ensurepip)
-AC_ARG_WITH(ensurepip,
+AC_MSG_CHECKING([for ensurepip])
+AC_ARG_WITH([ensurepip],
     [AS_HELP_STRING([--with-ensurepip@<:@=install|upgrade|no@:>@],
         ["install" or "upgrade" using bundled pip (default is upgrade)])],
     [],
@@ -6725,13 +6696,13 @@ AC_ARG_WITH(ensurepip,
         [with_ensurepip=upgrade]
       )
     ])
-AS_CASE($with_ensurepip,
+AS_CASE([$with_ensurepip],
     [yes|upgrade],[ENSUREPIP=upgrade],
     [install],[ENSUREPIP=install],
     [no],[ENSUREPIP=no],
     [AC_MSG_ERROR([--with-ensurepip=upgrade|install|no])])
-AC_MSG_RESULT($ENSUREPIP)
-AC_SUBST(ENSUREPIP)
+AC_MSG_RESULT([$ENSUREPIP])
+AC_SUBST([ENSUREPIP])
 
 # check if the dirent structure of a d_type field and DT_UNKNOWN is defined
 AC_CACHE_CHECK([if the dirent structure of a d_type field], [ac_cv_dirent_d_type], [
@@ -6749,7 +6720,7 @@ AC_LINK_IFELSE(
 ])
 
 AS_VAR_IF([ac_cv_dirent_d_type], [yes], [
-    AC_DEFINE(HAVE_DIRENT_D_TYPE, 1,
+    AC_DEFINE([HAVE_DIRENT_D_TYPE], [1],
               [Define to 1 if the dirent structure has a d_type field])
 ])
 
@@ -6776,7 +6747,7 @@ AC_LINK_IFELSE(
 ])
 
 AS_VAR_IF([ac_cv_getrandom_syscall], [yes], [
-    AC_DEFINE(HAVE_GETRANDOM_SYSCALL, 1,
+    AC_DEFINE([HAVE_GETRANDOM_SYSCALL], [1],
               [Define to 1 if the Linux getrandom() syscall is available])
 ])
 
@@ -6802,7 +6773,7 @@ AC_LINK_IFELSE(
 ])
 
 AS_VAR_IF([ac_cv_func_getrandom], [yes], [
-    AC_DEFINE(HAVE_GETRANDOM, 1,
+    AC_DEFINE([HAVE_GETRANDOM], [1],
               [Define to 1 if the getrandom() function is available])
 ])
 
@@ -6837,8 +6808,8 @@ AS_VAR_IF([GNULD], [yes], [
   rpath_arg="-Wl,-rpath="
 ])
 
-AC_MSG_CHECKING(for --with-openssl-rpath)
-AC_ARG_WITH(openssl-rpath,
+AC_MSG_CHECKING([for --with-openssl-rpath])
+AC_ARG_WITH([openssl-rpath],
     AS_HELP_STRING([--with-openssl-rpath=@<:@DIR|auto|no@:>@],
                    [Set runtime library directory (rpath) for OpenSSL libraries,
                     no (default): don't set rpath,
@@ -6848,7 +6819,7 @@ AC_ARG_WITH(openssl-rpath,
     [],
     [with_openssl_rpath=no]
 )
-AS_CASE($with_openssl_rpath,
+AS_CASE([$with_openssl_rpath],
     [auto|yes], [
       OPENSSL_RPATH=auto
       dnl look for linker directories
@@ -6868,7 +6839,7 @@ AS_CASE($with_openssl_rpath,
         AC_MSG_ERROR([--with-openssl-rpath "$with_openssl_rpath" is not a directory]))
     ]
 )
-AC_MSG_RESULT($OPENSSL_RPATH)
+AC_MSG_RESULT([$OPENSSL_RPATH])
 
 # This static linking is NOT OFFICIALLY SUPPORTED and not advertised.
 # Requires static OpenSSL build with position-independent code. Some features
@@ -6949,50 +6920,55 @@ WITH_SAVE_ENV([
 ])
 
 # ssl module default cipher suite string
-AH_TEMPLATE(PY_SSL_DEFAULT_CIPHERS,
+AH_TEMPLATE([PY_SSL_DEFAULT_CIPHERS],
   [Default cipher suites list for ssl module.
    1: Python's preferred selection, 2: leave OpenSSL defaults untouched, 0: custom string])
-AH_TEMPLATE(PY_SSL_DEFAULT_CIPHER_STRING,
+AH_TEMPLATE([PY_SSL_DEFAULT_CIPHER_STRING],
   [Cipher suite string for PY_SSL_DEFAULT_CIPHERS=0]
 )
 
-AC_MSG_CHECKING(for --with-ssl-default-suites)
-AC_ARG_WITH(ssl-default-suites,
-            AS_HELP_STRING([--with-ssl-default-suites=@<:@python|openssl|STRING@:>@],
-                           [override default cipher suites string,
-                            python: use Python's preferred selection (default),
-                            openssl: leave OpenSSL's defaults untouched,
-                            STRING: use a custom string,
-                            python and STRING also set TLS 1.2 as minimum TLS version]),
+AC_MSG_CHECKING([for --with-ssl-default-suites])
+AC_ARG_WITH(
+  [ssl-default-suites],
+  [AS_HELP_STRING(
+    [--with-ssl-default-suites=@<:@python|openssl|STRING@:>@],
+    [override default cipher suites string,
+     python: use Python's preferred selection (default),
+     openssl: leave OpenSSL's defaults untouched,
+     STRING: use a custom string,
+     python and STRING also set TLS 1.2 as minimum TLS version]
+  )],
 [
-AC_MSG_RESULT($withval)
+AC_MSG_RESULT([$withval])
 case "$withval" in
     python)
-        AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1)
+        AC_DEFINE([PY_SSL_DEFAULT_CIPHERS], [1])
         ;;
     openssl)
-        AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 2)
+        AC_DEFINE([PY_SSL_DEFAULT_CIPHERS], [2])
         ;;
     *)
-        AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 0)
-        AC_DEFINE_UNQUOTED(PY_SSL_DEFAULT_CIPHER_STRING, "$withval")
+        AC_DEFINE([PY_SSL_DEFAULT_CIPHERS], [0])
+        AC_DEFINE_UNQUOTED([PY_SSL_DEFAULT_CIPHER_STRING], ["$withval"])
         ;;
 esac
 ],
 [
-AC_MSG_RESULT(python)
-AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1)
+AC_MSG_RESULT([python])
+AC_DEFINE([PY_SSL_DEFAULT_CIPHERS], [1])
 ])
 
 # builtin hash modules
 default_hashlib_hashes="md5,sha1,sha2,sha3,blake2"
 AC_DEFINE([PY_BUILTIN_HASHLIB_HASHES], [], [enabled builtin hash modules]
 )
-AC_MSG_CHECKING(for --with-builtin-hashlib-hashes)
-AC_ARG_WITH(builtin-hashlib-hashes,
-            AS_HELP_STRING([--with-builtin-hashlib-hashes=md5,sha1,sha2,sha3,blake2],
-                           [builtin hash modules,
-                            md5, sha1, sha2, sha3 (with shake), blake2]),
+AC_MSG_CHECKING([for --with-builtin-hashlib-hashes])
+AC_ARG_WITH(
+  [builtin-hashlib-hashes],
+  [AS_HELP_STRING(
+    [--with-builtin-hashlib-hashes=md5,sha1,sha2,sha3,blake2],
+    [builtin hash modules, md5, sha1, sha2, sha3 (with shake), blake2]
+  )],
 [
   AS_CASE([$with_builtin_hashlib_hashes],
     [yes], [with_builtin_hashlib_hashes=$default_hashlib_hashes],
@@ -7000,13 +6976,14 @@ AC_ARG_WITH(builtin-hashlib-hashes,
   )
 ], [with_builtin_hashlib_hashes=$default_hashlib_hashes])
 
-AC_MSG_RESULT($with_builtin_hashlib_hashes)
-AC_DEFINE_UNQUOTED(PY_BUILTIN_HASHLIB_HASHES, "$with_builtin_hashlib_hashes")
+AC_MSG_RESULT([$with_builtin_hashlib_hashes])
+AC_DEFINE_UNQUOTED([PY_BUILTIN_HASHLIB_HASHES],
+  ["$with_builtin_hashlib_hashes"])
 
 as_save_IFS=$IFS
 IFS=,
 for builtin_hash in $with_builtin_hashlib_hashes; do
-    AS_CASE($builtin_hash,
+    AS_CASE([$builtin_hash],
       [md5], [with_builtin_md5=yes],
       [sha1], [with_builtin_sha1=yes],
       [sha2], [with_builtin_sha2=yes],
@@ -7040,6 +7017,74 @@ AC_ARG_ENABLE([test-modules],
 AC_MSG_RESULT([$TEST_MODULES])
 AC_SUBST([TEST_MODULES])
 
+# gh-109054: Check if -latomic is needed to get <pyatomic.h> atomic functions.
+# On Linux aarch64, GCC may require programs and libraries to be linked
+# explicitly to libatomic. Call _Py_atomic_or_uint64() which may require
+# libatomic __atomic_fetch_or_8(), or not, depending on the C compiler and the
+# compiler flags.
+#
+# gh-112779: On RISC-V, GCC 12 and earlier require libatomic support for 1-byte
+# and 2-byte operations, but not for 8-byte operations.
+#
+# Avoid #include <Python.h> or #include <pyport.h>. The <Python.h> header
+# requires <pyconfig.h> header which is only written below by AC_OUTPUT below.
+# If the check is done after AC_OUTPUT, modifying LIBS has no effect
+# anymore.  <pyport.h> cannot be included alone, it's designed to be included
+# by <Python.h>: it expects other includes and macros to be defined.
+_SAVE_VAR([CPPFLAGS])
+CPPFLAGS="${BASECPPFLAGS} -I. -I${srcdir}/Include ${CPPFLAGS}"
+
+AC_CACHE_CHECK([whether libatomic is needed by <pyatomic.h>],
+               [ac_cv_libatomic_needed],
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+// pyatomic.h needs uint64_t and Py_ssize_t types
+#include <stdint.h>  // int64_t, intptr_t
+#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h> // ssize_t
+#endif
+// Code adapted from Include/pyport.h
+#if HAVE_SSIZE_T
+typedef ssize_t Py_ssize_t;
+#elif SIZEOF_VOID_P == SIZEOF_SIZE_T
+typedef intptr_t Py_ssize_t;
+#else
+#  error "unable to define Py_ssize_t"
+#endif
+
+#include "pyatomic.h"
+
+int main()
+{
+    uint64_t value;
+    _Py_atomic_store_uint64(&value, 2);
+    if (_Py_atomic_or_uint64(&value, 8) != 2) {
+        return 1; // error
+    }
+    if (_Py_atomic_load_uint64(&value) != 10) {
+        return 1; // error
+    }
+    uint8_t byte = 0xb8;
+    if (_Py_atomic_or_uint8(&byte, 0x2d) != 0xb8) {
+        return 1; // error
+    }
+    if (_Py_atomic_load_uint8(&byte) != 0xbd) {
+        return 1; // error
+    }
+    return 0; // all good
+}
+]])],
+  [ac_cv_libatomic_needed=no],  dnl build succeeded
+  [ac_cv_libatomic_needed=yes], dnl build failed
+  [ac_cv_libatomic_needed=no])  dnl cross compilation
+])
+
+AS_VAR_IF([ac_cv_libatomic_needed], [yes],
+          [LIBS="${LIBS} -latomic"
+           LIBATOMIC=${LIBATOMIC-"-latomic"}])
+_RESTORE_VAR([CPPFLAGS])
+
+
+# stdlib
 AC_DEFUN([PY_STDLIB_MOD_SET_NA], [
   m4_foreach([mod], [$@], [
     AS_VAR_SET([py_cv_module_]mod, [n/a])])
@@ -7047,15 +7092,14 @@ AC_DEFUN([PY_STDLIB_MOD_SET_NA], [
 
 # stdlib not available
 dnl Modules that are not available on some platforms
-dnl AIX has shadow passwords, but access is not via getspent()
-dnl VxWorks does not provide crypt() function
 AS_CASE([$ac_sys_system],
-  [AIX], [PY_STDLIB_MOD_SET_NA([_scproxy], [spwd])],
-  [VxWorks*], [PY_STDLIB_MOD_SET_NA([_scproxy], [_crypt], [termios], [grp])],
-  [Darwin], [PY_STDLIB_MOD_SET_NA([ossaudiodev], [spwd])],
-  [CYGWIN*], [PY_STDLIB_MOD_SET_NA([_scproxy], [nis])],
-  [QNX*], [PY_STDLIB_MOD_SET_NA([_scproxy], [nis])],
-  [FreeBSD*], [PY_STDLIB_MOD_SET_NA([_scproxy], [spwd])],
+  [AIX], [PY_STDLIB_MOD_SET_NA([_scproxy])],
+  [VxWorks*], [PY_STDLIB_MOD_SET_NA([_scproxy], [termios], [grp])],
+  dnl The _scproxy module is available on macOS
+  [Darwin], [],
+  [CYGWIN*], [PY_STDLIB_MOD_SET_NA([_scproxy])],
+  [QNX*], [PY_STDLIB_MOD_SET_NA([_scproxy])],
+  [FreeBSD*], [PY_STDLIB_MOD_SET_NA([_scproxy])],
   [Emscripten|WASI], [
     dnl subprocess and multiprocessing are not supported (no fork syscall).
     dnl curses and tkinter user interface are not available.
@@ -7075,11 +7119,8 @@ AS_CASE([$ac_sys_system],
       [_xxsubinterpreters],
       [_xxinterpchannels],
       [grp],
-      [nis],
-      [ossaudiodev],
       [pwd],
       [resource],
-      [spwd],
       [syslog],
     )
     AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
@@ -7136,7 +7177,7 @@ AC_DEFUN([PY_STDLIB_MOD], [
   m4_pushdef([modstate], [py_cv_module_$1])dnl
   dnl Check if module has been disabled by PY_STDLIB_MOD_SET_NA()
   AS_IF([test "$modstate" != "n/a"], [
-    AS_IF(m4_ifblank([$2], [true], [$2]),
+    AS_IF([m4_ifblank([$2], [true], [$2])],
        [AS_IF([m4_ifblank([$3], [true], [$3])], [modstate=yes], [modstate=missing])],
        [modstate=disabled])
   ])
@@ -7204,7 +7245,6 @@ PY_STDLIB_MOD([_posixshmem],
   [$POSIXSHMEM_CFLAGS], [$POSIXSHMEM_LIBS])
 
 dnl needs libm
-PY_STDLIB_MOD_SIMPLE([audioop], [], [$LIBM])
 PY_STDLIB_MOD_SIMPLE([_statistics], [], [$LIBM])
 PY_STDLIB_MOD_SIMPLE([cmath], [], [$LIBM])
 PY_STDLIB_MOD_SIMPLE([math], [], [$LIBM])
@@ -7225,20 +7265,18 @@ PY_STDLIB_MOD([_socket],
 
 dnl platform specific extensions
 PY_STDLIB_MOD([grp], [], [test "$ac_cv_func_getgrgid" = yes -o "$ac_cv_func_getgrgid_r" = yes])
-PY_STDLIB_MOD([ossaudiodev],
-  [], [test "$ac_cv_header_linux_soundcard_h" = yes -o "$ac_cv_header_sys_soundcard_h" = yes],
-  [], [$OSSAUDIODEV_LIBS])
 PY_STDLIB_MOD([pwd], [], [test "$ac_cv_func_getpwuid" = yes -o "$ac_cv_func_getpwuid_r" = yes])
 PY_STDLIB_MOD([resource], [], [test "$ac_cv_header_sys_resource_h" = yes])
 PY_STDLIB_MOD([_scproxy],
   [test "$ac_sys_system" = "Darwin"], [],
   [], [-framework SystemConfiguration -framework CoreFoundation])
-PY_STDLIB_MOD([spwd], [], [test "$ac_cv_func_getspent" = yes -o "$ac_cv_func_getspnam" = yes])
 PY_STDLIB_MOD([syslog], [], [test "$ac_cv_header_syslog_h" = yes])
 PY_STDLIB_MOD([termios], [], [test "$ac_cv_header_termios_h" = yes])
 
 dnl _elementtree loads libexpat via CAPI hook in pyexpat
-PY_STDLIB_MOD([pyexpat], [], [], [$LIBEXPAT_CFLAGS], [$LIBEXPAT_LDFLAGS])
+PY_STDLIB_MOD([pyexpat],
+  [], [test "$ac_cv_header_sys_time_h" = "yes"],
+  [$LIBEXPAT_CFLAGS], [$LIBEXPAT_LDFLAGS])
 PY_STDLIB_MOD([_elementtree], [], [], [$LIBEXPAT_CFLAGS], [])
 PY_STDLIB_MOD_SIMPLE([_codecs_cn])
 PY_STDLIB_MOD_SIMPLE([_codecs_hk])
@@ -7265,9 +7303,6 @@ PY_STDLIB_MOD([_blake2],
   [test "$with_builtin_blake2" = yes], [],
   [$LIBB2_CFLAGS], [$LIBB2_LIBS])
 
-PY_STDLIB_MOD([_crypt],
-  [], [test "$ac_cv_crypt_crypt" = yes],
-  [$LIBCRYPT_CFLAGS], [$LIBCRYPT_LIBS])
 PY_STDLIB_MOD([_ctypes],
   [], [test "$have_libffi" = yes],
   [$NO_STRICT_OVERFLOW_CFLAGS $LIBFFI_CFLAGS], [$LIBFFI_LIBS])
@@ -7286,9 +7321,6 @@ PY_STDLIB_MOD([_dbm],
 PY_STDLIB_MOD([_gdbm],
   [test "$have_gdbm_dbmliborder" = yes], [test "$have_gdbm" = yes],
   [$GDBM_CFLAGS], [$GDBM_LIBS])
-PY_STDLIB_MOD([nis],
-  [], [test "$have_nis" = yes -a "$ac_cv_header_rpc_rpc_h" = yes],
-  [$LIBNSL_CFLAGS], [$LIBNSL_LIBS])
  PY_STDLIB_MOD([readline],
   [], [test "$with_readline" != "no"],
   [$READLINE_CFLAGS], [$READLINE_LIBS])
@@ -7320,8 +7352,12 @@ PY_STDLIB_MOD([_hashlib], [], [test "$ac_cv_working_openssl_hashlib" = yes],
   [$OPENSSL_INCLUDES], [$OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH $LIBCRYPTO_LIBS])
 
 dnl test modules
-PY_STDLIB_MOD([_testcapi], [test "$TEST_MODULES" = yes])
+PY_STDLIB_MOD([_testcapi],
+    [test "$TEST_MODULES" = yes],
+    dnl Modules/_testcapi needs -latomic for 32bit AIX build
+    [], [], [$LIBATOMIC])
 PY_STDLIB_MOD([_testclinic], [test "$TEST_MODULES" = yes])
+PY_STDLIB_MOD([_testclinic_limited], [test "$TEST_MODULES" = yes])
 PY_STDLIB_MOD([_testinternalcapi], [test "$TEST_MODULES" = yes])
 PY_STDLIB_MOD([_testbuffer], [test "$TEST_MODULES" = yes])
 PY_STDLIB_MOD([_testimportmultiple], [test "$TEST_MODULES" = yes], [test "$ac_cv_func_dlopen" = yes])
@@ -7333,18 +7369,26 @@ PY_STDLIB_MOD([_ctypes_test],
   [], [$LIBM])
 
 dnl Limited API template modules.
-dnl The limited C API is not compatible with the Py_TRACE_REFS macro.
 dnl Emscripten does not support shared libraries yet.
-PY_STDLIB_MOD([xxlimited], [test "$with_trace_refs" = "no"], [test "$ac_cv_func_dlopen" = yes])
-PY_STDLIB_MOD([xxlimited_35], [test "$with_trace_refs" = "no"], [test "$ac_cv_func_dlopen" = yes])
+PY_STDLIB_MOD([xxlimited], [], [test "$ac_cv_func_dlopen" = yes])
+PY_STDLIB_MOD([xxlimited_35], [], [test "$ac_cv_func_dlopen" = yes])
 
 # substitute multiline block, must come after last PY_STDLIB_MOD()
 AC_SUBST([MODULE_BLOCK])
 
 # generate output files
-AC_CONFIG_FILES(Makefile.pre Misc/python.pc Misc/python-embed.pc Misc/python-config.sh)
-AC_CONFIG_FILES([Modules/Setup.bootstrap Modules/Setup.stdlib])
+AC_CONFIG_FILES(m4_normalize([
+  Makefile.pre
+  Misc/python.pc
+  Misc/python-embed.pc
+  Misc/python-config.sh
+]))
+AC_CONFIG_FILES(m4_normalize([
+  Modules/Setup.bootstrap
+  Modules/Setup.stdlib
+]))
 AC_CONFIG_FILES([Modules/ld_so_aix], [chmod +x Modules/ld_so_aix])
+# Generate files like pyconfig.h
 AC_OUTPUT
 
 AC_MSG_NOTICE([creating Modules/Setup.local])
@@ -7380,3 +7424,10 @@ AS_VAR_IF([PY_SUPPORT_TIER], [0], [AC_MSG_WARN([
 Platform "$host" with compiler "$ac_cv_cc_name" is not supported by the
 CPython core team, see https://peps.python.org/pep-0011/ for more information.
 ])])
+
+if test "$ac_cv_header_stdatomic_h" != "yes"; then
+  AC_MSG_NOTICE(m4_normalize([
+    Your compiler or platform does have a working C11 stdatomic.h. A future
+    version of Python may require stdatomic.h.
+  ]))
+fi
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 2c22b27af65ea3..2978fa2c17301f 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -175,12 +175,6 @@
 /* Define to 1 if you have the `copy_file_range' function. */
 #undef HAVE_COPY_FILE_RANGE
 
-/* Define to 1 if you have the <crypt.h> header file. */
-#undef HAVE_CRYPT_H
-
-/* Define if you have the crypt_r() function. */
-#undef HAVE_CRYPT_R
-
 /* Define to 1 if you have the `ctermid' function. */
 #undef HAVE_CTERMID
 
@@ -613,9 +607,6 @@
 /* Define this if you have le64toh() */
 #undef HAVE_HTOLE64
 
-/* Define to 1 if you have the <ieeefp.h> header file. */
-#undef HAVE_IEEEFP_H
-
 /* Define to 1 if you have the `if_nameindex' function. */
 #undef HAVE_IF_NAMEINDEX
 
@@ -727,6 +718,9 @@
 /* Define to 1 if you have the <linux/fs.h> header file. */
 #undef HAVE_LINUX_FS_H
 
+/* Define to 1 if you have the <linux/limits.h> header file. */
+#undef HAVE_LINUX_LIMITS_H
+
 /* Define to 1 if you have the <linux/memfd.h> header file. */
 #undef HAVE_LINUX_MEMFD_H
 
@@ -790,12 +784,12 @@
 /* Define if you have the 'memfd_create' function. */
 #undef HAVE_MEMFD_CREATE
 
-/* Define to 1 if you have the <memory.h> header file. */
-#undef HAVE_MEMORY_H
-
 /* Define to 1 if you have the `memrchr' function. */
 #undef HAVE_MEMRCHR
 
+/* Define to 1 if you have the <minix/config.h> header file. */
+#undef HAVE_MINIX_CONFIG_H
+
 /* Define to 1 if you have the `mkdirat' function. */
 #undef HAVE_MKDIRAT
 
@@ -844,6 +838,9 @@
 /* Define to 1 if you have the <netinet/in.h> header file. */
 #undef HAVE_NETINET_IN_H
 
+/* Define to 1 if you have the <netlink/netlink.h> header file. */
+#undef HAVE_NETLINK_NETLINK_H
+
 /* Define to 1 if you have the <netpacket/packet.h> header file. */
 #undef HAVE_NETPACKET_PACKET_H
 
@@ -986,6 +983,9 @@
 /* Define if you can turn off readline's signal handling. */
 #undef HAVE_RL_CATCH_SIGNAL
 
+/* Define if readline supports rl_compdisp_func_t */
+#undef HAVE_RL_COMPDISP_FUNC_T
+
 /* Define if you have readline 2.2 */
 #undef HAVE_RL_COMPLETION_APPEND_CHARACTER
 
@@ -1004,9 +1004,6 @@
 /* Define if you have readline 4.0 */
 #undef HAVE_RL_RESIZE_TERMINAL
 
-/* Define to 1 if you have the <rpc/rpc.h> header file. */
-#undef HAVE_RPC_RPC_H
-
 /* Define to 1 if you have the `rtpSpawn' function. */
 #undef HAVE_RTPSPAWN
 
@@ -1193,6 +1190,9 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
@@ -1366,6 +1366,9 @@
 /* Define to 1 if you have the <sys/termio.h> header file. */
 #undef HAVE_SYS_TERMIO_H
 
+/* Define to 1 if you have the <sys/timerfd.h> header file. */
+#undef HAVE_SYS_TIMERFD_H
+
 /* Define to 1 if you have the <sys/times.h> header file. */
 #undef HAVE_SYS_TIMES_H
 
@@ -1408,6 +1411,9 @@
 /* Define to 1 if you have the `timegm' function. */
 #undef HAVE_TIMEGM
 
+/* Define if you have the 'timerfd_create' function. */
+#undef HAVE_TIMERFD_CREATE
+
 /* Define to 1 if you have the `times' function. */
 #undef HAVE_TIMES
 
@@ -1605,6 +1611,9 @@
 /* Defined if Python is built as a shared library. */
 #undef Py_ENABLE_SHARED
 
+/* Define if you want to disable the GIL */
+#undef Py_GIL_DISABLED
+
 /* Define hash algorithm for str, bytes and memoryview. SipHash24: 1, FNV: 2,
    SipHash13: 3, externally defined: 0 */
 #undef Py_HASH_ALGORITHM
@@ -1612,6 +1621,9 @@
 /* Define if you want to enable internal statistics gathering. */
 #undef Py_STATS
 
+/* The version of SunOS/Solaris as reported by `uname -r' without the dot. */
+#undef Py_SUNOS_VERSION
+
 /* Define if you want to enable tracing references for debugging purpose */
 #undef Py_TRACE_REFS
 
@@ -1691,9 +1703,6 @@
 /* Library needed by timemodule.c: librt may be needed for clock_gettime() */
 #undef TIMEMODULE_LIB
 
-/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
-#undef TIME_WITH_SYS_TIME
-
 /* Define to 1 if your <sys/time.h> declares `struct tm'. */
 #undef TM_IN_SYS_TIME
 
@@ -1704,21 +1713,87 @@
 #ifndef _ALL_SOURCE
 # undef _ALL_SOURCE
 #endif
+/* Enable general extensions on macOS.  */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
 /* Enable GNU extensions on systems that have them.  */
 #ifndef _GNU_SOURCE
 # undef _GNU_SOURCE
 #endif
-/* Enable threading extensions on Solaris.  */
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
 #ifndef _POSIX_PTHREAD_SEMANTICS
 # undef _POSIX_PTHREAD_SEMANTICS
 #endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014.  */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015.  */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015.  */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015.  */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010.  */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009.  */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
 /* Enable extensions on HP NonStop.  */
 #ifndef _TANDEM_SOURCE
 # undef _TANDEM_SOURCE
 #endif
-/* Enable general extensions on Solaris.  */
-#ifndef __EXTENSIONS__
-# undef __EXTENSIONS__
+/* Enable X/Open extensions.  Define to 500 only if necessary
+   to make mbstate_t available.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
 #endif
 
 
@@ -1749,6 +1824,9 @@
 /* Define to 1 if libintl is needed for locale functions. */
 #undef WITH_LIBINTL
 
+/* Define if you want to compile in mimalloc memory allocator. */
+#undef WITH_MIMALLOC
+
 /* Define if you want to produce an OpenStep/Rhapsody framework (shared
    library plus accessory files). */
 #undef WITH_NEXT_FRAMEWORK
@@ -1792,22 +1870,12 @@
 /* This must be defined on AIX systems to enable large file support. */
 #undef _LARGE_FILES
 
-/* Define to 1 if on MINIX. */
-#undef _MINIX
-
 /* Define on NetBSD to activate all library features */
 #undef _NETBSD_SOURCE
 
-/* Define to 2 if the system does not provide POSIX.1 features except with
-   this defined. */
-#undef _POSIX_1_SOURCE
-
 /* Define to activate features from IEEE Stds 1003.1-2008 */
 #undef _POSIX_C_SOURCE
 
-/* Define to 1 if you need to in order for `stat' and other things to work. */
-#undef _POSIX_SOURCE
-
 /* Define if you have POSIX threads, and your system does not define that. */
 #undef _POSIX_THREADS
 
@@ -1850,7 +1918,7 @@
 /* Define to `long int' if <sys/types.h> does not define. */
 #undef off_t
 
-/* Define to `int' if <sys/types.h> does not define. */
+/* Define as a signed integer type capable of holding a process identifier. */
 #undef pid_t
 
 /* Define to empty if the keyword does not work. */